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Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/i2c-2.6

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Linus Torvalds 2005-06-22 10:42:54 -07:00
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10
Documentation/feature-removal-schedule.txt
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@ -83,3 +83,13 @@ Why: Deprecated in favour of the new ioctl-based rawiso interface, which is
more efficient. You should really be using libraw1394 for raw1394
access anyway.
Who: Jody McIntyre <scjody@steamballoon.com>
---------------------------
What: i2c sysfs name change: in1_ref, vid deprecated in favour of cpu0_vid
When: November 2005
Files: drivers/i2c/chips/adm1025.c, drivers/i2c/chips/adm1026.c
Why: Match the other drivers' name for the same function, duplicate names
will be available until removal of old names.
Who: Grant Coady <gcoady@gmail.com>

2
Documentation/i2c/busses/i2c-sis69x
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@ -42,7 +42,7 @@ I suspect that this driver could be made to work for the following SiS
chipsets as well: 635, and 635T. If anyone owns a board with those chips
AND is willing to risk crashing & burning an otherwise well-behaved kernel
in the name of progress... please contact me at <mhoffman@lightlink.com> or
via the project's mailing list: <sensors@stimpy.netroedge.com>. Please
via the project's mailing list: <lm-sensors@lm-sensors.org>. Please
send bug reports and/or success stories as well.

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Kernel driver adm1021
=====================
Supported chips:
* Analog Devices ADM1021
Prefix: 'adm1021'
Addresses scanned: I2C 0x18 - 0x1a, 0x29 - 0x2b, 0x4c - 0x4e
Datasheet: Publicly available at the Analog Devices website
* Analog Devices ADM1021A/ADM1023
Prefix: 'adm1023'
Addresses scanned: I2C 0x18 - 0x1a, 0x29 - 0x2b, 0x4c - 0x4e
Datasheet: Publicly available at the Analog Devices website
* Genesys Logic GL523SM
Prefix: 'gl523sm'
Addresses scanned: I2C 0x18 - 0x1a, 0x29 - 0x2b, 0x4c - 0x4e
Datasheet:
* Intel Xeon Processor
Prefix: - any other - may require 'force_adm1021' parameter
Addresses scanned: none
Datasheet: Publicly available at Intel website
* Maxim MAX1617
Prefix: 'max1617'
Addresses scanned: I2C 0x18 - 0x1a, 0x29 - 0x2b, 0x4c - 0x4e
Datasheet: Publicly available at the Maxim website
* Maxim MAX1617A
Prefix: 'max1617a'
Addresses scanned: I2C 0x18 - 0x1a, 0x29 - 0x2b, 0x4c - 0x4e
Datasheet: Publicly available at the Maxim website
* National Semiconductor LM84
Prefix: 'lm84'
Addresses scanned: I2C 0x18 - 0x1a, 0x29 - 0x2b, 0x4c - 0x4e
Datasheet: Publicly available at the National Semiconductor website
* Philips NE1617
Prefix: 'max1617' (probably detected as a max1617)
Addresses scanned: I2C 0x18 - 0x1a, 0x29 - 0x2b, 0x4c - 0x4e
Datasheet: Publicly available at the Philips website
* Philips NE1617A
Prefix: 'max1617' (probably detected as a max1617)
Addresses scanned: I2C 0x18 - 0x1a, 0x29 - 0x2b, 0x4c - 0x4e
Datasheet: Publicly available at the Philips website
* TI THMC10
Prefix: 'thmc10'
Addresses scanned: I2C 0x18 - 0x1a, 0x29 - 0x2b, 0x4c - 0x4e
Datasheet: Publicly available at the TI website
* Onsemi MC1066
Prefix: 'mc1066'
Addresses scanned: I2C 0x18 - 0x1a, 0x29 - 0x2b, 0x4c - 0x4e
Datasheet: Publicly available at the Onsemi website
Authors:
Frodo Looijaard <frodol@dds.nl>,
Philip Edelbrock <phil@netroedge.com>
Module Parameters
-----------------
* read_only: int
Don't set any values, read only mode
Description
-----------
The chips supported by this driver are very similar. The Maxim MAX1617 is
the oldest; it has the problem that it is not very well detectable. The
MAX1617A solves that. The ADM1021 is a straight clone of the MAX1617A.
Ditto for the THMC10. From here on, we will refer to all these chips as
ADM1021-clones.
The ADM1021 and MAX1617A reports a die code, which is a sort of revision
code. This can help us pinpoint problems; it is not very useful
otherwise.
ADM1021-clones implement two temperature sensors. One of them is internal,
and measures the temperature of the chip itself; the other is external and
is realised in the form of a transistor-like device. A special alarm
indicates whether the remote sensor is connected.
Each sensor has its own low and high limits. When they are crossed, the
corresponding alarm is set and remains on as long as the temperature stays
out of range. Temperatures are measured in degrees Celsius. Measurements
are possible between -65 and +127 degrees, with a resolution of one degree.
If an alarm triggers, it will remain triggered until the hardware register
is read at least once. This means that the cause for the alarm may already
have disappeared!
This driver only updates its values each 1.5 seconds; reading it more often
will do no harm, but will return 'old' values. It is possible to make
ADM1021-clones do faster measurements, but there is really no good reason
for that.
Xeon support
------------
Some Xeon processors have real max1617, adm1021, or compatible chips
within them, with two temperature sensors.
Other Xeons have chips with only one sensor.
If you have a Xeon, and the adm1021 module loads, and both temperatures
appear valid, then things are good.
If the adm1021 module doesn't load, you should try this:
modprobe adm1021 force_adm1021=BUS,ADDRESS
ADDRESS can only be 0x18, 0x1a, 0x29, 0x2b, 0x4c, or 0x4e.
If you have dual Xeons you may have appear to have two separate
adm1021-compatible chips, or two single-temperature sensors, at distinct
addresses.

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Kernel driver adm1025
=====================
Supported chips:
* Analog Devices ADM1025, ADM1025A
Prefix: 'adm1025'
Addresses scanned: I2C 0x2c - 0x2e
Datasheet: Publicly available at the Analog Devices website
* Philips NE1619
Prefix: 'ne1619'
Addresses scanned: I2C 0x2c - 0x2d
Datasheet: Publicly available at the Philips website
The NE1619 presents some differences with the original ADM1025:
* Only two possible addresses (0x2c - 0x2d).
* No temperature offset register, but we don't use it anyway.
* No INT mode for pin 16. We don't play with it anyway.
Authors:
Chen-Yuan Wu <gwu@esoft.com>,
Jean Delvare <khali@linux-fr.org>
Description
-----------
(This is from Analog Devices.) The ADM1025 is a complete system hardware
monitor for microprocessor-based systems, providing measurement and limit
comparison of various system parameters. Five voltage measurement inputs
are provided, for monitoring +2.5V, +3.3V, +5V and +12V power supplies and
the processor core voltage. The ADM1025 can monitor a sixth power-supply
voltage by measuring its own VCC. One input (two pins) is dedicated to a
remote temperature-sensing diode and an on-chip temperature sensor allows
ambient temperature to be monitored.
One specificity of this chip is that the pin 11 can be hardwired in two
different manners. It can act as the +12V power-supply voltage analog
input, or as the a fifth digital entry for the VID reading (bit 4). It's
kind of strange since both are useful, and the reason for designing the
chip that way is obscure at least to me. The bit 5 of the configuration
register can be used to define how the chip is hardwired. Please note that
it is not a choice you have to make as the user. The choice was already
made by your motherboard's maker. If the configuration bit isn't set
properly, you'll have a wrong +12V reading or a wrong VID reading. The way
the driver handles that is to preserve this bit through the initialization
process, assuming that the BIOS set it up properly beforehand. If it turns
out not to be true in some cases, we'll provide a module parameter to force
modes.
This driver also supports the ADM1025A, which differs from the ADM1025
only in that it has "open-drain VID inputs while the ADM1025 has on-chip
100k pull-ups on the VID inputs". It doesn't make any difference for us.

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Kernel driver adm1026
=====================
Supported chips:
* Analog Devices ADM1026
Prefix: 'adm1026'
Addresses scanned: I2C 0x2c, 0x2d, 0x2e
Datasheet: Publicly available at the Analog Devices website
http://www.analog.com/en/prod/0,,766_825_ADM1026,00.html
Authors:
Philip Pokorny <ppokorny@penguincomputing.com> for Penguin Computing
Justin Thiessen <jthiessen@penguincomputing.com>
Module Parameters
-----------------
* gpio_input: int array (min = 1, max = 17)
List of GPIO pins (0-16) to program as inputs
* gpio_output: int array (min = 1, max = 17)
List of GPIO pins (0-16) to program as outputs
* gpio_inverted: int array (min = 1, max = 17)
List of GPIO pins (0-16) to program as inverted
* gpio_normal: int array (min = 1, max = 17)
List of GPIO pins (0-16) to program as normal/non-inverted
* gpio_fan: int array (min = 1, max = 8)
List of GPIO pins (0-7) to program as fan tachs
Description
-----------
This driver implements support for the Analog Devices ADM1026. Analog
Devices calls it a "complete thermal system management controller."
The ADM1026 implements three (3) temperature sensors, 17 voltage sensors,
16 general purpose digital I/O lines, eight (8) fan speed sensors (8-bit),
an analog output and a PWM output along with limit, alarm and mask bits for
all of the above. There is even 8k bytes of EEPROM memory on chip.
Temperatures are measured in degrees Celsius. There are two external
sensor inputs and one internal sensor. Each sensor has a high and low
limit. If the limit is exceeded, an interrupt (#SMBALERT) can be
generated. The interrupts can be masked. In addition, there are over-temp
limits for each sensor. If this limit is exceeded, the #THERM output will
be asserted. The current temperature and limits have a resolution of 1
degree.
Fan rotation speeds are reported in RPM (rotations per minute) but measured
in counts of a 22.5kHz internal clock. Each fan has a high limit which
corresponds to a minimum fan speed. If the limit is exceeded, an interrupt
can be generated. Each fan can be programmed to divide the reference clock
by 1, 2, 4 or 8. Not all RPM values can accurately be represented, so some
rounding is done. With a divider of 8, the slowest measurable speed of a
two pulse per revolution fan is 661 RPM.
There are 17 voltage sensors. An alarm is triggered if the voltage has
crossed a programmable minimum or maximum limit. Note that minimum in this
case always means 'closest to zero'; this is important for negative voltage
measurements. Several inputs have integrated attenuators so they can measure
higher voltages directly. 3.3V, 5V, 12V, -12V and battery voltage all have
dedicated inputs. There are several inputs scaled to 0-3V full-scale range
for SCSI terminator power. The remaining inputs are not scaled and have
a 0-2.5V full-scale range. A 2.5V or 1.82V reference voltage is provided
for negative voltage measurements.
If an alarm triggers, it will remain triggered until the hardware register
is read at least once. This means that the cause for the alarm may already
have disappeared! Note that in the current implementation, all hardware
registers are read whenever any data is read (unless it is less than 2.0
seconds since the last update). This means that you can easily miss
once-only alarms.
The ADM1026 measures continuously. Analog inputs are measured about 4
times a second. Fan speed measurement time depends on fan speed and
divisor. It can take as long as 1.5 seconds to measure all fan speeds.
The ADM1026 has the ability to automatically control fan speed based on the
temperature sensor inputs. Both the PWM output and the DAC output can be
used to control fan speed. Usually only one of these two outputs will be
used. Write the minimum PWM or DAC value to the appropriate control
register. Then set the low temperature limit in the tmin values for each
temperature sensor. The range of control is fixed at 20 °C, and the
largest difference between current and tmin of the temperature sensors sets
the control output. See the datasheet for several example circuits for
controlling fan speed with the PWM and DAC outputs. The fan speed sensors
do not have PWM compensation, so it is probably best to control the fan
voltage from the power lead rather than on the ground lead.
The datasheet shows an example application with VID signals attached to
GPIO lines. Unfortunately, the chip may not be connected to the VID lines
in this way. The driver assumes that the chips *is* connected this way to
get a VID voltage.

35
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Kernel driver adm1031
=====================
Supported chips:
* Analog Devices ADM1030
Prefix: 'adm1030'
Addresses scanned: I2C 0x2c to 0x2e
Datasheet: Publicly available at the Analog Devices website
http://products.analog.com/products/info.asp?product=ADM1030
* Analog Devices ADM1031
Prefix: 'adm1031'
Addresses scanned: I2C 0x2c to 0x2e
Datasheet: Publicly available at the Analog Devices website
http://products.analog.com/products/info.asp?product=ADM1031
Authors:
Alexandre d'Alton <alex@alexdalton.org>
Jean Delvare <khali@linux-fr.org>
Description
-----------
The ADM1030 and ADM1031 are digital temperature sensors and fan controllers.
They sense their own temperature as well as the temperature of up to one
(ADM1030) or two (ADM1031) external diodes.
All temperature values are given in degrees Celsius. Resolution is 0.5
degree for the local temperature, 0.125 degree for the remote temperatures.
Each temperature channel has its own high and low limits, plus a critical
limit.
The ADM1030 monitors a single fan speed, while the ADM1031 monitors up to
two. Each fan channel has its own low speed limit.

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Kernel driver adm9240
=====================
Supported chips:
* Analog Devices ADM9240
Prefix: 'adm9240'
Addresses scanned: I2C 0x2c - 0x2f
Datasheet: Publicly available at the Analog Devices website
http://www.analog.com/UploadedFiles/Data_Sheets/79857778ADM9240_0.pdf
* Dallas Semiconductor DS1780
Prefix: 'ds1780'
Addresses scanned: I2C 0x2c - 0x2f
Datasheet: Publicly available at the Dallas Semiconductor (Maxim) website
http://pdfserv.maxim-ic.com/en/ds/DS1780.pdf
* National Semiconductor LM81
Prefix: 'lm81'
Addresses scanned: I2C 0x2c - 0x2f
Datasheet: Publicly available at the National Semiconductor website
http://www.national.com/ds.cgi/LM/LM81.pdf
Authors:
Frodo Looijaard <frodol@dds.nl>,
Philip Edelbrock <phil@netroedge.com>,
Michiel Rook <michiel@grendelproject.nl>,
Grant Coady <gcoady@gmail.com> with guidance
from Jean Delvare <khali@linux-fr.org>
Interface
---------
The I2C addresses listed above assume BIOS has not changed the
chip MSB 5-bit address. Each chip reports a unique manufacturer
identification code as well as the chip revision/stepping level.
Description
-----------
[From ADM9240] The ADM9240 is a complete system hardware monitor for
microprocessor-based systems, providing measurement and limit comparison
of up to four power supplies and two processor core voltages, plus
temperature, two fan speeds and chassis intrusion. Measured values can
be read out via an I2C-compatible serial System Management Bus, and values
for limit comparisons can be programmed in over the same serial bus. The
high speed successive approximation ADC allows frequent sampling of all
analog channels to ensure a fast interrupt response to any out-of-limit
measurement.
The ADM9240, DS1780 and LM81 are register compatible, the following
details are common to the three chips. Chip differences are described
after this section.
Measurements
------------
The measurement cycle
The adm9240 driver will take a measurement reading no faster than once
each two seconds. User-space may read sysfs interface faster than the
measurement update rate and will receive cached data from the most
recent measurement.
ADM9240 has a very fast 320us temperature and voltage measurement cycle
with independent fan speed measurement cycles counting alternating rising
edges of the fan tacho inputs.
DS1780 measurement cycle is about once per second including fan speed.
LM81 measurement cycle is about once per 400ms including fan speed.
The LM81 12-bit extended temperature measurement mode is not supported.
Temperature
-----------
On chip temperature is reported as degrees Celsius as 9-bit signed data
with resolution of 0.5 degrees Celsius. High and low temperature limits
are 8-bit signed data with resolution of one degree Celsius.
Temperature alarm is asserted once the temperature exceeds the high limit,
and is cleared when the temperature falls below the temp1_max_hyst value.
Fan Speed
---------
Two fan tacho inputs are provided, the ADM9240 gates an internal 22.5kHz
clock via a divider to an 8-bit counter. Fan speed (rpm) is calculated by:
rpm = (22500 * 60) / (count * divider)
Automatic fan clock divider
* User sets 0 to fan_min limit
- low speed alarm is disabled
- fan clock divider not changed
- auto fan clock adjuster enabled for valid fan speed reading
* User sets fan_min limit too low
- low speed alarm is enabled
- fan clock divider set to max
- fan_min set to register value 254 which corresponds
to 664 rpm on adm9240
- low speed alarm will be asserted if fan speed is
less than minimum measurable speed
- auto fan clock adjuster disabled
* User sets reasonable fan speed
- low speed alarm is enabled
- fan clock divider set to suit fan_min
- auto fan clock adjuster enabled: adjusts fan_min
* User sets unreasonably high low fan speed limit
- resolution of the low speed limit may be reduced
- alarm will be asserted
- auto fan clock adjuster enabled: adjusts fan_min
* fan speed may be displayed as zero until the auto fan clock divider
adjuster brings fan speed clock divider back into chip measurement
range, this will occur within a few measurement cycles.
Analog Output
-------------
An analog output provides a 0 to 1.25 volt signal intended for an external
fan speed amplifier circuit. The analog output is set to maximum value on
power up or reset. This doesn't do much on the test Intel SE440BX-2.
Voltage Monitor
Voltage (IN) measurement is internally scaled:
nr label nominal maximum resolution
mV mV mV
0 +2.5V 2500 3320 13.0
1 Vccp1 2700 3600 14.1
2 +3.3V 3300 4380 17.2
3 +5V 5000 6640 26.0
4 +12V 12000 15940 62.5
5 Vccp2 2700 3600 14.1
The reading is an unsigned 8-bit value, nominal voltage measurement is
represented by a reading of 192, being 3/4 of the measurement range.
An alarm is asserted for any voltage going below or above the set limits.
The driver reports and accepts voltage limits scaled to the above table.
VID Monitor
-----------
The chip has five inputs to read the 5-bit VID and reports the mV value
based on detected CPU type.
Chassis Intrusion
-----------------
An alarm is asserted when the CI pin goes active high. The ADM9240
Datasheet has an example of an external temperature sensor driving
this pin. On an Intel SE440BX-2 the Chassis Intrusion header is
connected to a normally open switch.
The ADM9240 provides an internal open drain on this line, and may output
a 20 ms active low pulse to reset an external Chassis Intrusion latch.
Clear the CI latch by writing value 1 to the sysfs chassis_clear file.
Alarm flags reported as 16-bit word
bit label comment
--- ------------- --------------------------
0 +2.5 V_Error high or low limit exceeded
1 VCCP_Error high or low limit exceeded
2 +3.3 V_Error high or low limit exceeded
3 +5 V_Error high or low limit exceeded
4 Temp_Error temperature error
6 FAN1_Error fan low limit exceeded
7 FAN2_Error fan low limit exceeded
8 +12 V_Error high or low limit exceeded
9 VCCP2_Error high or low limit exceeded
12 Chassis_Error CI pin went high
Remaining bits are reserved and thus undefined. It is important to note
that alarm bits may be cleared on read, user-space may latch alarms and
provide the end-user with a method to clear alarm memory.

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Kernel driver asb100
====================
Supported Chips:
* Asus ASB100 and ASB100-A "Bach"
Prefix: 'asb100'
Addresses scanned: I2C 0x2d
Datasheet: none released
Author: Mark M. Hoffman <mhoffman@lightlink.com>
Description
-----------
This driver implements support for the Asus ASB100 and ASB100-A "Bach".
These are custom ASICs available only on Asus mainboards. Asus refuses to
supply a datasheet for these chips. Thanks go to many people who helped
investigate their hardware, including:
Vitaly V. Bursov
Alexander van Kaam (author of MBM for Windows)
Bertrik Sikken
The ASB100 implements seven voltage sensors, three fan rotation speed
sensors, four temperature sensors, VID lines and alarms. In addition to
these, the ASB100-A also implements a single PWM controller for fans 2 and
3 (i.e. one setting controls both.) If you have a plain ASB100, the PWM
controller will simply not work (or maybe it will for you... it doesn't for
me).
Temperatures are measured and reported in degrees Celsius.
Fan speeds are reported in RPM (rotations per minute). An alarm is
triggered if the rotation speed has dropped below a programmable limit.
Voltage sensors (also known as IN sensors) report values in volts.
The VID lines encode the core voltage value: the voltage level your
processor should work with. This is hardcoded by the mainboard and/or
processor itself. It is a value in volts.
Alarms: (TODO question marks indicate may or may not work)
0x0001 => in0 (?)
0x0002 => in1 (?)
0x0004 => in2
0x0008 => in3
0x0010 => temp1 (1)
0x0020 => temp2
0x0040 => fan1
0x0080 => fan2
0x0100 => in4
0x0200 => in5 (?) (2)
0x0400 => in6 (?) (2)
0x0800 => fan3
0x1000 => chassis switch
0x2000 => temp3
Alarm Notes:
(1) This alarm will only trigger if the hysteresis value is 127C.
I.e. it behaves the same as w83781d.
(2) The min and max registers for these values appear to
be read-only or otherwise stuck at 0x00.
TODO:
* Experiment with fan divisors > 8.
* Experiment with temp. sensor types.
* Are there really 13 voltage inputs? Probably not...
* Cleanups, no doubt...

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Kernel driver ds1621
====================
Supported chips:
* Dallas Semiconductor DS1621
Prefix: 'ds1621'
Addresses scanned: I2C 0x48 - 0x4f
Datasheet: Publicly available at the Dallas Semiconductor website
http://www.dalsemi.com/
* Dallas Semiconductor DS1625
Prefix: 'ds1621'
Addresses scanned: I2C 0x48 - 0x4f
Datasheet: Publicly available at the Dallas Semiconductor website
http://www.dalsemi.com/
Authors:
Christian W. Zuckschwerdt <zany@triq.net>
valuable contributions by Jan M. Sendler <sendler@sendler.de>
ported to 2.6 by Aurelien Jarno <aurelien@aurel32.net>
with the help of Jean Delvare <khali@linux-fr.org>
Module Parameters
------------------
* polarity int
Output's polarity: 0 = active high, 1 = active low
Description
-----------
The DS1621 is a (one instance) digital thermometer and thermostat. It has
both high and low temperature limits which can be user defined (i.e.
programmed into non-volatile on-chip registers). Temperature range is -55
degree Celsius to +125 in 0.5 increments. You may convert this into a
Fahrenheit range of -67 to +257 degrees with 0.9 steps. If polarity
parameter is not provided, original value is used.
As for the thermostat, behavior can also be programmed using the polarity
toggle. On the one hand ("heater"), the thermostat output of the chip,
Tout, will trigger when the low limit temperature is met or underrun and
stays high until the high limit is met or exceeded. On the other hand
("cooler"), vice versa. That way "heater" equals "active low", whereas
"conditioner" equals "active high". Please note that the DS1621 data sheet
is somewhat misleading in this point since setting the polarity bit does
not simply invert Tout.
A second thing is that, during extensive testing, Tout showed a tolerance
of up to +/- 0.5 degrees even when compared against precise temperature
readings. Be sure to have a high vs. low temperature limit gap of al least
1.0 degree Celsius to avoid Tout "bouncing", though!
As for alarms, you can read the alarm status of the DS1621 via the 'alarms'
/sys file interface. The result consists mainly of bit 6 and 5 of the
configuration register of the chip; bit 6 (0x40 or 64) is the high alarm
bit and bit 5 (0x20 or 32) the low one. These bits are set when the high or
low limits are met or exceeded and are reset by the module as soon as the
respective temperature ranges are left.
The alarm registers are in no way suitable to find out about the actual
status of Tout. They will only tell you about its history, whether or not
any of the limits have ever been met or exceeded since last power-up or
reset. Be aware: When testing, it showed that the status of Tout can change
with neither of the alarms set.
Temperature conversion of the DS1621 takes up to 1000ms; internal access to
non-volatile registers may last for 10ms or below.
High Accuracy Temperature Reading
---------------------------------
As said before, the temperature issued via the 9-bit i2c-bus data is
somewhat arbitrary. Internally, the temperature conversion is of a
different kind that is explained (not so...) well in the DS1621 data sheet.
To cut the long story short: Inside the DS1621 there are two oscillators,
both of them biassed by a temperature coefficient.
Higher resolution of the temperature reading can be achieved using the
internal projection, which means taking account of REG_COUNT and REG_SLOPE
(the driver manages them):
Taken from Dallas Semiconductors App Note 068: 'Increasing Temperature
Resolution on the DS1620' and App Note 105: 'High Resolution Temperature
Measurement with Dallas Direct-to-Digital Temperature Sensors'
- Read the 9-bit temperature and strip the LSB (Truncate the .5 degs)
- The resulting value is TEMP_READ.
- Then, read REG_COUNT.
- And then, REG_SLOPE.
TEMP = TEMP_READ - 0.25 + ((REG_SLOPE - REG_COUNT) / REG_SLOPE)
Note that this is what the DONE bit in the DS1621 configuration register is
good for: Internally, one temperature conversion takes up to 1000ms. Before
that conversion is complete you will not be able to read valid things out
of REG_COUNT and REG_SLOPE. The DONE bit, as you may have guessed by now,
tells you whether the conversion is complete ("done", in plain English) and
thus, whether the values you read are good or not.
The DS1621 has two modes of operation: "Continuous" conversion, which can
be understood as the default stand-alone mode where the chip gets the
temperature and controls external devices via its Tout pin or tells other
i2c's about it if they care. The other mode is called "1SHOT", that means
that it only figures out about the temperature when it is explicitly told
to do so; this can be seen as power saving mode.
Now if you want to read REG_COUNT and REG_SLOPE, you have to either stop
the continuous conversions until the contents of these registers are valid,
or, in 1SHOT mode, you have to have one conversion made.

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Kernel driver eeprom
====================
Supported chips:
* Any EEPROM chip in the designated address range
Prefix: 'eeprom'
Addresses scanned: I2C 0x50 - 0x57
Datasheets: Publicly available from:
Atmel (www.atmel.com),
Catalyst (www.catsemi.com),
Fairchild (www.fairchildsemi.com),
Microchip (www.microchip.com),
Philips (www.semiconductor.philips.com),
Rohm (www.rohm.com),
ST (www.st.com),
Xicor (www.xicor.com),
and others.
Chip Size (bits) Address
24C01 1K 0x50 (shadows at 0x51 - 0x57)
24C01A 1K 0x50 - 0x57 (Typical device on DIMMs)
24C02 2K 0x50 - 0x57
24C04 4K 0x50, 0x52, 0x54, 0x56
(additional data at 0x51, 0x53, 0x55, 0x57)
24C08 8K 0x50, 0x54 (additional data at 0x51, 0x52,
0x53, 0x55, 0x56, 0x57)
24C16 16K 0x50 (additional data at 0x51 - 0x57)
Sony 2K 0x57
Atmel 34C02B 2K 0x50 - 0x57, SW write protect at 0x30-37
Catalyst 34FC02 2K 0x50 - 0x57, SW write protect at 0x30-37
Catalyst 34RC02 2K 0x50 - 0x57, SW write protect at 0x30-37
Fairchild 34W02 2K 0x50 - 0x57, SW write protect at 0x30-37
Microchip 24AA52 2K 0x50 - 0x57, SW write protect at 0x30-37
ST M34C02 2K 0x50 - 0x57, SW write protect at 0x30-37
Authors:
Frodo Looijaard <frodol@dds.nl>,
Philip Edelbrock <phil@netroedge.com>,
Jean Delvare <khali@linux-fr.org>,
Greg Kroah-Hartman <greg@kroah.com>,
IBM Corp.
Description
-----------
This is a simple EEPROM module meant to enable reading the first 256 bytes
of an EEPROM (on a SDRAM DIMM for example). However, it will access serial
EEPROMs on any I2C adapter. The supported devices are generically called
24Cxx, and are listed above; however the numbering for these
industry-standard devices may vary by manufacturer.
This module was a programming exercise to get used to the new project
organization laid out by Frodo, but it should be at least completely
effective for decoding the contents of EEPROMs on DIMMs.
DIMMS will typically contain a 24C01A or 24C02, or the 34C02 variants.
The other devices will not be found on a DIMM because they respond to more
than one address.
DDC Monitors may contain any device. Often a 24C01, which responds to all 8
addresses, is found.
Recent Sony Vaio laptops have an EEPROM at 0x57. We couldn't get the
specification, so it is guess work and far from being complete.
The Microchip 24AA52/24LCS52, ST M34C02, and others support an additional
software write protect register at 0x30 - 0x37 (0x20 less than the memory
location). The chip responds to "write quick" detection at this address but
does not respond to byte reads. If this register is present, the lower 128
bytes of the memory array are not write protected. Any byte data write to
this address will write protect the memory array permanently, and the
device will no longer respond at the 0x30-37 address. The eeprom driver
does not support this register.
Lacking functionality:
* Full support for larger devices (24C04, 24C08, 24C16). These are not
typically found on a PC. These devices will appear as separate devices at
multiple addresses.
* Support for really large devices (24C32, 24C64, 24C128, 24C256, 24C512).
These devices require two-byte address fields and are not supported.
* Enable Writing. Again, no technical reason why not, but making it easy
to change the contents of the EEPROMs (on DIMMs anyway) also makes it easy
to disable the DIMMs (potentially preventing the computer from booting)
until the values are restored somehow.
Use:
After inserting the module (and any other required SMBus/i2c modules), you
should have some EEPROM directories in /sys/bus/i2c/devices/* of names such
as "0-0050". Inside each of these is a series of files, the eeprom file
contains the binary data from EEPROM.

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Kernel driver fscher
====================
Supported chips:
* Fujitsu-Siemens Hermes chip
Prefix: 'fscher'
Addresses scanned: I2C 0x73
Authors:
Reinhard Nissl <rnissl@gmx.de> based on work
from Hermann Jung <hej@odn.de>,
Frodo Looijaard <frodol@dds.nl>,
Philip Edelbrock <phil@netroedge.com>
Description
-----------
This driver implements support for the Fujitsu-Siemens Hermes chip. It is
described in the 'Register Set Specification BMC Hermes based Systemboard'
from Fujitsu-Siemens.
The Hermes chip implements a hardware-based system management, e.g. for
controlling fan speed and core voltage. There is also a watchdog counter on
the chip which can trigger an alarm and even shut the system down.
The chip provides three temperature values (CPU, motherboard and
auxiliary), three voltage values (+12V, +5V and battery) and three fans
(power supply, CPU and auxiliary).
Temperatures are measured in degrees Celsius. The resolution is 1 degree.
Fan rotation speeds are reported in RPM (rotations per minute). The value
can be divided by a programmable divider (1, 2 or 4) which is stored on
the chip.
Voltage sensors (also known as "in" sensors) report their values in volts.
All values are reported as final values from the driver. There is no need
for further calculations.
Detailed description
--------------------
Below you'll find a single line description of all the bit values. With
this information, you're able to decode e. g. alarms, wdog, etc. To make
use of the watchdog, you'll need to set the watchdog time and enable the
watchdog. After that it is necessary to restart the watchdog time within
the specified period of time, or a system reset will occur.
* revision
READING & 0xff = 0x??: HERMES revision identification
* alarms
READING & 0x80 = 0x80: CPU throttling active
READING & 0x80 = 0x00: CPU running at full speed
READING & 0x10 = 0x10: software event (see control:1)
READING & 0x10 = 0x00: no software event
READING & 0x08 = 0x08: watchdog event (see wdog:2)
READING & 0x08 = 0x00: no watchdog event
READING & 0x02 = 0x02: thermal event (see temp*:1)
READING & 0x02 = 0x00: no thermal event
READING & 0x01 = 0x01: fan event (see fan*:1)
READING & 0x01 = 0x00: no fan event
READING & 0x13 ! 0x00: ALERT LED is flashing
* control
READING & 0x01 = 0x01: software event
READING & 0x01 = 0x00: no software event
WRITING & 0x01 = 0x01: set software event
WRITING & 0x01 = 0x00: clear software event
* watchdog_control
READING & 0x80 = 0x80: power off on watchdog event while thermal event
READING & 0x80 = 0x00: watchdog power off disabled (just system reset enabled)
READING & 0x40 = 0x40: watchdog timebase 60 seconds (see also wdog:1)
READING & 0x40 = 0x00: watchdog timebase 2 seconds
READING & 0x10 = 0x10: watchdog enabled
READING & 0x10 = 0x00: watchdog disabled
WRITING & 0x80 = 0x80: enable "power off on watchdog event while thermal event"
WRITING & 0x80 = 0x00: disable "power off on watchdog event while thermal event"
WRITING & 0x40 = 0x40: set watchdog timebase to 60 seconds
WRITING & 0x40 = 0x00: set watchdog timebase to 2 seconds
WRITING & 0x20 = 0x20: disable watchdog
WRITING & 0x10 = 0x10: enable watchdog / restart watchdog time
* watchdog_state
READING & 0x02 = 0x02: watchdog system reset occurred
READING & 0x02 = 0x00: no watchdog system reset occurred
WRITING & 0x02 = 0x02: clear watchdog event
* watchdog_preset
READING & 0xff = 0x??: configured watch dog time in units (see wdog:3 0x40)
WRITING & 0xff = 0x??: configure watch dog time in units
* in* (0: +5V, 1: +12V, 2: onboard 3V battery)
READING: actual voltage value
* temp*_status (1: CPU sensor, 2: onboard sensor, 3: auxiliary sensor)
READING & 0x02 = 0x02: thermal event (overtemperature)
READING & 0x02 = 0x00: no thermal event
READING & 0x01 = 0x01: sensor is working
READING & 0x01 = 0x00: sensor is faulty
WRITING & 0x02 = 0x02: clear thermal event
* temp*_input (1: CPU sensor, 2: onboard sensor, 3: auxiliary sensor)
READING: actual temperature value
* fan*_status (1: power supply fan, 2: CPU fan, 3: auxiliary fan)
READING & 0x04 = 0x04: fan event (fan fault)
READING & 0x04 = 0x00: no fan event
WRITING & 0x04 = 0x04: clear fan event
* fan*_div (1: power supply fan, 2: CPU fan, 3: auxiliary fan)
Divisors 2,4 and 8 are supported, both for reading and writing
* fan*_pwm (1: power supply fan, 2: CPU fan, 3: auxiliary fan)
READING & 0xff = 0x00: fan may be switched off
READING & 0xff = 0x01: fan must run at least at minimum speed (supply: 6V)
READING & 0xff = 0xff: fan must run at maximum speed (supply: 12V)
READING & 0xff = 0x??: fan must run at least at given speed (supply: 6V..12V)
WRITING & 0xff = 0x00: fan may be switched off
WRITING & 0xff = 0x01: fan must run at least at minimum speed (supply: 6V)
WRITING & 0xff = 0xff: fan must run at maximum speed (supply: 12V)
WRITING & 0xff = 0x??: fan must run at least at given speed (supply: 6V..12V)
* fan*_input (1: power supply fan, 2: CPU fan, 3: auxiliary fan)
READING: actual RPM value
Limitations
-----------
* Measuring fan speed
It seems that the chip counts "ripples" (typical fans produce 2 ripples per
rotation while VERAX fans produce 18) in a 9-bit register. This register is
read out every second, then the ripple prescaler (2, 4 or 8) is applied and
the result is stored in the 8 bit output register. Due to the limitation of
the counting register to 9 bits, it is impossible to measure a VERAX fan
properly (even with a prescaler of 8). At its maximum speed of 3500 RPM the
fan produces 1080 ripples per second which causes the counting register to
overflow twice, leading to only 186 RPM.
* Measuring input voltages
in2 ("battery") reports the voltage of the onboard lithium battery and not
+3.3V from the power supply.
* Undocumented features
Fujitsu-Siemens Computers has not documented all features of the chip so
far. Their software, System Guard, shows that there are a still some
features which cannot be controlled by this implementation.

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Kernel driver gl518sm
=====================
Supported chips:
* Genesys Logic GL518SM release 0x00
Prefix: 'gl518sm'
Addresses scanned: I2C 0x2c and 0x2d
Datasheet: http://www.genesyslogic.com/pdf
* Genesys Logic GL518SM release 0x80
Prefix: 'gl518sm'
Addresses scanned: I2C 0x2c and 0x2d
Datasheet: http://www.genesyslogic.com/pdf
Authors:
Frodo Looijaard <frodol@dds.nl>,
Kyösti Mälkki <kmalkki@cc.hut.fi>
Hong-Gunn Chew <hglinux@gunnet.org>
Jean Delvare <khali@linux-fr.org>
Description
-----------
IMPORTANT:
For the revision 0x00 chip, the in0, in1, and in2 values (+5V, +3V,
and +12V) CANNOT be read. This is a limitation of the chip, not the driver.
This driver supports the Genesys Logic GL518SM chip. There are at least
two revision of this chip, which we call revision 0x00 and 0x80. Revision
0x80 chips support the reading of all voltages and revision 0x00 only
for VIN3.
The GL518SM implements one temperature sensor, two fan rotation speed
sensors, and four voltage sensors. It can report alarms through the
computer speakers.
Temperatures are measured in degrees Celsius. An alarm goes off while the
temperature is above the over temperature limit, and has not yet dropped
below the hysteresis limit. The alarm always reflects the current
situation. Measurements are guaranteed between -10 degrees and +110
degrees, with a accuracy of +/-3 degrees.
Rotation speeds are reported in RPM (rotations per minute). An alarm is
triggered if the rotation speed has dropped below a programmable limit. In
case when you have selected to turn fan1 off, no fan1 alarm is triggered.
Fan readings can be divided by a programmable divider (1, 2, 4 or 8) to
give the readings more range or accuracy. Not all RPM values can
accurately be represented, so some rounding is done. With a divider
of 2, the lowest representable value is around 1900 RPM.
Voltage sensors (also known as VIN sensors) report their values in volts.
An alarm is triggered if the voltage has crossed a programmable minimum or
maximum limit. Note that minimum in this case always means 'closest to
zero'; this is important for negative voltage measurements. The VDD input
measures voltages between 0.000 and 5.865 volt, with a resolution of 0.023
volt. The other inputs measure voltages between 0.000 and 4.845 volt, with
a resolution of 0.019 volt. Note that revision 0x00 chips do not support
reading the current voltage of any input except for VIN3; limit setting and
alarms work fine, though.
When an alarm is triggered, you can be warned by a beeping signal through your
computer speaker. It is possible to enable all beeping globally, or only the
beeping for some alarms.
If an alarm triggers, it will remain triggered until the hardware register
is read at least once (except for temperature alarms). This means that the
cause for the alarm may already have disappeared! Note that in the current
implementation, all hardware registers are read whenever any data is read
(unless it is less than 1.5 seconds since the last update). This means that
you can easily miss once-only alarms.
The GL518SM only updates its values each 1.5 seconds; reading it more often
will do no harm, but will return 'old' values.

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Kernel driver it87
==================
Supported chips:
* IT8705F
Prefix: 'it87'
Addresses scanned: from Super I/O config space, or default ISA 0x290 (8 I/O ports)
Datasheet: Publicly available at the ITE website
http://www.ite.com.tw/
* IT8712F
Prefix: 'it8712'
Addresses scanned: I2C 0x28 - 0x2f
from Super I/O config space, or default ISA 0x290 (8 I/O ports)
Datasheet: Publicly available at the ITE website
http://www.ite.com.tw/
* SiS950 [clone of IT8705F]
Prefix: 'sis950'
Addresses scanned: from Super I/O config space, or default ISA 0x290 (8 I/O ports)
Datasheet: No longer be available
Author: Christophe Gauthron <chrisg@0-in.com>
Module Parameters
-----------------
* update_vbat: int
0 if vbat should report power on value, 1 if vbat should be updated after
each read. Default is 0. On some boards the battery voltage is provided
by either the battery or the onboard power supply. Only the first reading
at power on will be the actual battery voltage (which the chip does
automatically). On other boards the battery voltage is always fed to
the chip so can be read at any time. Excessive reading may decrease
battery life but no information is given in the datasheet.
* fix_pwm_polarity int
Force PWM polarity to active high (DANGEROUS). Some chips are
misconfigured by BIOS - PWM values would be inverted. This option tries
to fix this. Please contact your BIOS manufacturer and ask him for fix.
Description
-----------
This driver implements support for the IT8705F, IT8712F and SiS950 chips.
This driver also supports IT8712F, which adds SMBus access, and a VID
input, used to report the Vcore voltage of the Pentium processor.
The IT8712F additionally features VID inputs.
These chips are 'Super I/O chips', supporting floppy disks, infrared ports,
joysticks and other miscellaneous stuff. For hardware monitoring, they
include an 'environment controller' with 3 temperature sensors, 3 fan
rotation speed sensors, 8 voltage sensors, and associated alarms.
Temperatures are measured in degrees Celsius. An alarm is triggered once
when the Overtemperature Shutdown limit is crossed.
Fan rotation speeds are reported in RPM (rotations per minute). An alarm is
triggered if the rotation speed has dropped below a programmable limit. Fan
readings can be divided by a programmable divider (1, 2, 4 or 8) to give the
readings more range or accuracy. Not all RPM values can accurately be
represented, so some rounding is done. With a divider of 2, the lowest
representable value is around 2600 RPM.
Voltage sensors (also known as IN sensors) report their values in volts. An
alarm is triggered if the voltage has crossed a programmable minimum or
maximum limit. Note that minimum in this case always means 'closest to
zero'; this is important for negative voltage measurements. All voltage
inputs can measure voltages between 0 and 4.08 volts, with a resolution of
0.016 volt. The battery voltage in8 does not have limit registers.
The VID lines (IT8712F only) encode the core voltage value: the voltage
level your processor should work with. This is hardcoded by the mainboard
and/or processor itself. It is a value in volts.
If an alarm triggers, it will remain triggered until the hardware register
is read at least once. This means that the cause for the alarm may already
have disappeared! Note that in the current implementation, all hardware
registers are read whenever any data is read (unless it is less than 1.5
seconds since the last update). This means that you can easily miss
once-only alarms.
The IT87xx only updates its values each 1.5 seconds; reading it more often
will do no harm, but will return 'old' values.
To change sensor N to a thermistor, 'echo 2 > tempN_type' where N is 1, 2,
or 3. To change sensor N to a thermal diode, 'echo 3 > tempN_type'.
Give 0 for unused sensor. Any other value is invalid. To configure this at
startup, consult lm_sensors's /etc/sensors.conf. (2 = thermistor;
3 = thermal diode)
The fan speed control features are limited to manual PWM mode. Automatic
"Smart Guardian" mode control handling is not implemented. However
if you want to go for "manual mode" just write 1 to pwmN_enable.

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Kernel driver lm63
==================
Supported chips:
* National Semiconductor LM63
Prefix: 'lm63'
Addresses scanned: I2C 0x4c
Datasheet: Publicly available at the National Semiconductor website
http://www.national.com/pf/LM/LM63.html
Author: Jean Delvare <khali@linux-fr.org>
Thanks go to Tyan and especially Alex Buckingham for setting up a remote
access to their S4882 test platform for this driver.
http://www.tyan.com/
Description
-----------
The LM63 is a digital temperature sensor with integrated fan monitoring
and control.
The LM63 is basically an LM86 with fan speed monitoring and control
capabilities added. It misses some of the LM86 features though:
- No low limit for local temperature.
- No critical limit for local temperature.
- Critical limit for remote temperature can be changed only once. We
will consider that the critical limit is read-only.
The datasheet isn't very clear about what the tachometer reading is.
An explanation from National Semiconductor: The two lower bits of the read
value have to be masked out. The value is still 16 bit in width.
All temperature values are given in degrees Celsius. Resolution is 1.0
degree for the local temperature, 0.125 degree for the remote temperature.
The fan speed is measured using a tachometer. Contrary to most chips which
store the value in an 8-bit register and have a selectable clock divider
to make sure that the result will fit in the register, the LM63 uses 16-bit
value for measuring the speed of the fan. It can measure fan speeds down to
83 RPM, at least in theory.
Note that the pin used for fan monitoring is shared with an alert out
function. Depending on how the board designer wanted to use the chip, fan
speed monitoring will or will not be possible. The proper chip configuration
is left to the BIOS, and the driver will blindly trust it.
A PWM output can be used to control the speed of the fan. The LM63 has two
PWM modes: manual and automatic. Automatic mode is not fully implemented yet
(you cannot define your custom PWM/temperature curve), and mode change isn't
supported either.
The lm63 driver will not update its values more frequently than every
second; reading them more often will do no harm, but will return 'old'
values.

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Kernel driver lm75
==================
Supported chips:
* National Semiconductor LM75
Prefix: 'lm75'
Addresses scanned: I2C 0x48 - 0x4f
Datasheet: Publicly available at the National Semiconductor website
http://www.national.com/
* Dallas Semiconductor DS75
Prefix: 'lm75'
Addresses scanned: I2C 0x48 - 0x4f
Datasheet: Publicly available at the Dallas Semiconductor website
http://www.maxim-ic.com/
* Dallas Semiconductor DS1775
Prefix: 'lm75'
Addresses scanned: I2C 0x48 - 0x4f
Datasheet: Publicly available at the Dallas Semiconductor website
http://www.maxim-ic.com/
* Maxim MAX6625, MAX6626
Prefix: 'lm75'
Addresses scanned: I2C 0x48 - 0x4b
Datasheet: Publicly available at the Maxim website
http://www.maxim-ic.com/
* Microchip (TelCom) TCN75
Prefix: 'lm75'
Addresses scanned: I2C 0x48 - 0x4f
Datasheet: Publicly available at the Microchip website
http://www.microchip.com/
Author: Frodo Looijaard <frodol@dds.nl>
Description
-----------
The LM75 implements one temperature sensor. Limits can be set through the
Overtemperature Shutdown register and Hysteresis register. Each value can be
set and read to half-degree accuracy.
An alarm is issued (usually to a connected LM78) when the temperature
gets higher then the Overtemperature Shutdown value; it stays on until
the temperature falls below the Hysteresis value.
All temperatures are in degrees Celsius, and are guaranteed within a
range of -55 to +125 degrees.
The LM75 only updates its values each 1.5 seconds; reading it more often
will do no harm, but will return 'old' values.
The LM75 is usually used in combination with LM78-like chips, to measure
the temperature of the processor(s).
The DS75, DS1775, MAX6625, and MAX6626 are supported as well.
They are not distinguished from an LM75. While most of these chips
have three additional bits of accuracy (12 vs. 9 for the LM75),
the additional bits are not supported. Not only that, but these chips will
not be detected if not in 9-bit precision mode (use the force parameter if
needed).
The TCN75 is supported as well, and is not distinguished from an LM75.
The LM75 is essentially an industry standard; there may be other
LM75 clones not listed here, with or without various enhancements,
that are supported.
The LM77 is not supported, contrary to what we pretended for a long time.
Both chips are simply not compatible, value encoding differs.

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Kernel driver lm77
==================
Supported chips:
* National Semiconductor LM77
Prefix: 'lm77'
Addresses scanned: I2C 0x48 - 0x4b
Datasheet: Publicly available at the National Semiconductor website
http://www.national.com/
Author: Andras BALI <drewie@freemail.hu>
Description
-----------
The LM77 implements one temperature sensor. The temperature
sensor incorporates a band-gap type temperature sensor,
10-bit ADC, and a digital comparator with user-programmable upper
and lower limit values.
Limits can be set through the Overtemperature Shutdown register and
Hysteresis register.

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Kernel driver lm78
==================
Supported chips:
* National Semiconductor LM78
Prefix: 'lm78'
Addresses scanned: I2C 0x20 - 0x2f, ISA 0x290 (8 I/O ports)
Datasheet: Publicly available at the National Semiconductor website
http://www.national.com/
* National Semiconductor LM78-J
Prefix: 'lm78-j'
Addresses scanned: I2C 0x20 - 0x2f, ISA 0x290 (8 I/O ports)
Datasheet: Publicly available at the National Semiconductor website
http://www.national.com/
* National Semiconductor LM79
Prefix: 'lm79'
Addresses scanned: I2C 0x20 - 0x2f, ISA 0x290 (8 I/O ports)
Datasheet: Publicly available at the National Semiconductor website
http://www.national.com/
Author: Frodo Looijaard <frodol@dds.nl>
Description
-----------
This driver implements support for the National Semiconductor LM78, LM78-J
and LM79. They are described as 'Microprocessor System Hardware Monitors'.
There is almost no difference between the three supported chips. Functionally,
the LM78 and LM78-J are exactly identical. The LM79 has one more VID line,
which is used to report the lower voltages newer Pentium processors use.
From here on, LM7* means either of these three types.
The LM7* implements one temperature sensor, three fan rotation speed sensors,
seven voltage sensors, VID lines, alarms, and some miscellaneous stuff.
Temperatures are measured in degrees Celsius. An alarm is triggered once
when the Overtemperature Shutdown limit is crossed; it is triggered again
as soon as it drops below the Hysteresis value. A more useful behavior
can be found by setting the Hysteresis value to +127 degrees Celsius; in
this case, alarms are issued during all the time when the actual temperature
is above the Overtemperature Shutdown value. Measurements are guaranteed
between -55 and +125 degrees, with a resolution of 1 degree.
Fan rotation speeds are reported in RPM (rotations per minute). An alarm is
triggered if the rotation speed has dropped below a programmable limit. Fan
readings can be divided by a programmable divider (1, 2, 4 or 8) to give
the readings more range or accuracy. Not all RPM values can accurately be
represented, so some rounding is done. With a divider of 2, the lowest
representable value is around 2600 RPM.
Voltage sensors (also known as IN sensors) report their values in volts.
An alarm is triggered if the voltage has crossed a programmable minimum
or maximum limit. Note that minimum in this case always means 'closest to
zero'; this is important for negative voltage measurements. All voltage
inputs can measure voltages between 0 and 4.08 volts, with a resolution
of 0.016 volt.
The VID lines encode the core voltage value: the voltage level your processor
should work with. This is hardcoded by the mainboard and/or processor itself.
It is a value in volts. When it is unconnected, you will often find the
value 3.50 V here.
In addition to the alarms described above, there are a couple of additional
ones. There is a BTI alarm, which gets triggered when an external chip has
crossed its limits. Usually, this is connected to all LM75 chips; if at
least one crosses its limits, this bit gets set. The CHAS alarm triggers
if your computer case is open. The FIFO alarms should never trigger; it
indicates an internal error. The SMI_IN alarm indicates some other chip
has triggered an SMI interrupt. As we do not use SMI interrupts at all,
this condition usually indicates there is a problem with some other
device.
If an alarm triggers, it will remain triggered until the hardware register
is read at least once. This means that the cause for the alarm may
already have disappeared! Note that in the current implementation, all
hardware registers are read whenever any data is read (unless it is less
than 1.5 seconds since the last update). This means that you can easily
miss once-only alarms.
The LM7* only updates its values each 1.5 seconds; reading it more often
will do no harm, but will return 'old' values.

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Kernel driver lm80
==================
Supported chips:
* National Semiconductor LM80
Prefix: 'lm80'
Addresses scanned: I2C 0x28 - 0x2f
Datasheet: Publicly available at the National Semiconductor website
http://www.national.com/
Authors:
Frodo Looijaard <frodol@dds.nl>,
Philip Edelbrock <phil@netroedge.com>
Description
-----------
This driver implements support for the National Semiconductor LM80.
It is described as a 'Serial Interface ACPI-Compatible Microprocessor
System Hardware Monitor'.
The LM80 implements one temperature sensor, two fan rotation speed sensors,
seven voltage sensors, alarms, and some miscellaneous stuff.
Temperatures are measured in degrees Celsius. There are two sets of limits
which operate independently. When the HOT Temperature Limit is crossed,
this will cause an alarm that will be reasserted until the temperature
drops below the HOT Hysteresis. The Overtemperature Shutdown (OS) limits
should work in the same way (but this must be checked; the datasheet
is unclear about this). Measurements are guaranteed between -55 and
+125 degrees. The current temperature measurement has a resolution of
0.0625 degrees; the limits have a resolution of 1 degree.
Fan rotation speeds are reported in RPM (rotations per minute). An alarm is
triggered if the rotation speed has dropped below a programmable limit. Fan
readings can be divided by a programmable divider (1, 2, 4 or 8) to give
the readings more range or accuracy. Not all RPM values can accurately be
represented, so some rounding is done. With a divider of 2, the lowest
representable value is around 2600 RPM.
Voltage sensors (also known as IN sensors) report their values in volts.
An alarm is triggered if the voltage has crossed a programmable minimum
or maximum limit. Note that minimum in this case always means 'closest to
zero'; this is important for negative voltage measurements. All voltage
inputs can measure voltages between 0 and 2.55 volts, with a resolution
of 0.01 volt.
If an alarm triggers, it will remain triggered until the hardware register
is read at least once. This means that the cause for the alarm may
already have disappeared! Note that in the current implementation, all
hardware registers are read whenever any data is read (unless it is less
than 2.0 seconds since the last update). This means that you can easily
miss once-only alarms.
The LM80 only updates its values each 1.5 seconds; reading it more often
will do no harm, but will return 'old' values.

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Kernel driver lm83
==================
Supported chips:
* National Semiconductor LM83
Prefix: 'lm83'
Addresses scanned: I2C 0x18 - 0x1a, 0x29 - 0x2b, 0x4c - 0x4e
Datasheet: Publicly available at the National Semiconductor website
http://www.national.com/pf/LM/LM83.html
Author: Jean Delvare <khali@linux-fr.org>
Description
-----------
The LM83 is a digital temperature sensor. It senses its own temperature as
well as the temperature of up to three external diodes. It is compatible
with many other devices such as the LM84 and all other ADM1021 clones.
The main difference between the LM83 and the LM84 in that the later can
only sense the temperature of one external diode.
Using the adm1021 driver for a LM83 should work, but only two temperatures
will be reported instead of four.
The LM83 is only found on a handful of motherboards. Both a confirmed
list and an unconfirmed list follow. If you can confirm or infirm the
fact that any of these motherboards do actually have an LM83, please
contact us. Note that the LM90 can easily be misdetected as a LM83.
Confirmed motherboards:
SBS P014
Unconfirmed motherboards:
Gigabyte GA-8IK1100
Iwill MPX2
Soltek SL-75DRV5
The driver has been successfully tested by Magnus Forsström, who I'd
like to thank here. More testers will be of course welcome.
The fact that the LM83 is only scarcely used can be easily explained.
Most motherboards come with more than just temperature sensors for
health monitoring. They also have voltage and fan rotation speed
sensors. This means that temperature-only chips are usually used as
secondary chips coupled with another chip such as an IT8705F or similar
chip, which provides more features. Since systems usually need three
temperature sensors (motherboard, processor, power supply) and primary
chips provide some temperature sensors, the secondary chip, if needed,
won't have to handle more than two temperatures. Thus, ADM1021 clones
are sufficient, and there is no need for a four temperatures sensor
chip such as the LM83. The only case where using an LM83 would make
sense is on SMP systems, such as the above-mentioned Iwill MPX2,
because you want an additional temperature sensor for each additional
CPU.
On the SBS P014, this is different, since the LM83 is the only hardware
monitoring chipset. One temperature sensor is used for the motherboard
(actually measuring the LM83's own temperature), one is used for the
CPU. The two other sensors must be used to measure the temperature of
two other points of the motherboard. We suspect these points to be the
north and south bridges, but this couldn't be confirmed.
All temperature values are given in degrees Celsius. Local temperature
is given within a range of 0 to +85 degrees. Remote temperatures are
given within a range of 0 to +125 degrees. Resolution is 1.0 degree,
accuracy is guaranteed to 3.0 degrees (see the datasheet for more
details).
Each sensor has its own high limit, but the critical limit is common to
all four sensors. There is no hysteresis mechanism as found on most
recent temperature sensors.
The lm83 driver will not update its values more frequently than every
other second; reading them more often will do no harm, but will return
'old' values.

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Kernel driver lm85
==================
Supported chips:
* National Semiconductor LM85 (B and C versions)
Prefix: 'lm85'
Addresses scanned: I2C 0x2c, 0x2d, 0x2e
Datasheet: http://www.national.com/pf/LM/LM85.html
* Analog Devices ADM1027
Prefix: 'adm1027'
Addresses scanned: I2C 0x2c, 0x2d, 0x2e
Datasheet: http://www.analog.com/en/prod/0,,766_825_ADM1027,00.html
* Analog Devices ADT7463
Prefix: 'adt7463'
Addresses scanned: I2C 0x2c, 0x2d, 0x2e
Datasheet: http://www.analog.com/en/prod/0,,766_825_ADT7463,00.html
* SMSC EMC6D100, SMSC EMC6D101
Prefix: 'emc6d100'
Addresses scanned: I2C 0x2c, 0x2d, 0x2e
Datasheet: http://www.smsc.com/main/tools/discontinued/6d100.pdf
* SMSC EMC6D102
Prefix: 'emc6d102'
Addresses scanned: I2C 0x2c, 0x2d, 0x2e
Datasheet: http://www.smsc.com/main/catalog/emc6d102.html
Authors:
Philip Pokorny <ppokorny@penguincomputing.com>,
Frodo Looijaard <frodol@dds.nl>,
Richard Barrington <rich_b_nz@clear.net.nz>,
Margit Schubert-While <margitsw@t-online.de>,
Justin Thiessen <jthiessen@penguincomputing.com>
Description
-----------
This driver implements support for the National Semiconductor LM85 and
compatible chips including the Analog Devices ADM1027, ADT7463 and
SMSC EMC6D10x chips family.
The LM85 uses the 2-wire interface compatible with the SMBUS 2.0
specification. Using an analog to digital converter it measures three (3)
temperatures and five (5) voltages. It has four (4) 16-bit counters for
measuring fan speed. Five (5) digital inputs are provided for sampling the
VID signals from the processor to the VRM. Lastly, there are three (3) PWM
outputs that can be used to control fan speed.
The voltage inputs have internal scaling resistors so that the following
voltage can be measured without external resistors:
2.5V, 3.3V, 5V, 12V, and CPU core voltage (2.25V)
The temperatures measured are one internal diode, and two remote diodes.
Remote 1 is generally the CPU temperature. These inputs are designed to
measure a thermal diode like the one in a Pentium 4 processor in a socket
423 or socket 478 package. They can also measure temperature using a
transistor like the 2N3904.
A sophisticated control system for the PWM outputs is designed into the
LM85 that allows fan speed to be adjusted automatically based on any of the
three temperature sensors. Each PWM output is individually adjustable and
programmable. Once configured, the LM85 will adjust the PWM outputs in
response to the measured temperatures without further host intervention.
This feature can also be disabled for manual control of the PWM's.
Each of the measured inputs (voltage, temperature, fan speed) has
corresponding high/low limit values. The LM85 will signal an ALARM if any
measured value exceeds either limit.
The LM85 samples all inputs continuously. The lm85 driver will not read
the registers more often than once a second. Further, configuration data is
only read once each 5 minutes. There is twice as much config data as
measurements, so this would seem to be a worthwhile optimization.
Special Features
----------------
The LM85 has four fan speed monitoring modes. The ADM1027 has only two.
Both have special circuitry to compensate for PWM interactions with the
TACH signal from the fans. The ADM1027 can be configured to measure the
speed of a two wire fan, but the input conditioning circuitry is different
for 3-wire and 2-wire mode. For this reason, the 2-wire fan modes are not
exposed to user control. The BIOS should initialize them to the correct
mode. If you've designed your own ADM1027, you'll have to modify the
init_client function and add an insmod parameter to set this up.
To smooth the response of fans to changes in temperature, the LM85 has an
optional filter for smoothing temperatures. The ADM1027 has the same
config option but uses it to rate limit the changes to fan speed instead.
The ADM1027 and ADT7463 have a 10-bit ADC and can therefore measure
temperatures with 0.25 degC resolution. They also provide an offset to the
temperature readings that is automatically applied during measurement.
This offset can be used to zero out any errors due to traces and placement.
The documentation says that the offset is in 0.25 degC steps, but in
initial testing of the ADM1027 it was 1.00 degC steps. Analog Devices has
confirmed this "bug". The ADT7463 is reported to work as described in the
documentation. The current lm85 driver does not show the offset register.
The ADT7463 has a THERM asserted counter. This counter has a 22.76ms
resolution and a range of 5.8 seconds. The driver implements a 32-bit
accumulator of the counter value to extend the range to over a year. The
counter will stay at it's max value until read.
See the vendor datasheets for more information. There is application note
from National (AN-1260) with some additional information about the LM85.
The Analog Devices datasheet is very detailed and describes a procedure for
determining an optimal configuration for the automatic PWM control.
The SMSC EMC6D100 & EMC6D101 monitor external voltages, temperatures, and
fan speeds. They use this monitoring capability to alert the system to out
of limit conditions and can automatically control the speeds of multiple
fans in a PC or embedded system. The EMC6D101, available in a 24-pin SSOP
package, and the EMC6D100, available in a 28-pin SSOP package, are designed
to be register compatible. The EMC6D100 offers all the features of the
EMC6D101 plus additional voltage monitoring and system control features.
Unfortunately it is not possible to distinguish between the package
versions on register level so these additional voltage inputs may read
zero. The EMC6D102 features addtional ADC bits thus extending precision
of voltage and temperature channels.
Hardware Configurations
-----------------------
The LM85 can be jumpered for 3 different SMBus addresses. There are
no other hardware configuration options for the LM85.
The lm85 driver detects both LM85B and LM85C revisions of the chip. See the
datasheet for a complete description of the differences. Other than
identifying the chip, the driver behaves no differently with regard to
these two chips. The LM85B is recommended for new designs.
The ADM1027 and ADT7463 chips have an optional SMBALERT output that can be
used to signal the chipset in case a limit is exceeded or the temperature
sensors fail. Individual sensor interrupts can be masked so they won't
trigger SMBALERT. The SMBALERT output if configured replaces one of the other
functions (PWM2 or IN0). This functionality is not implemented in current
driver.
The ADT7463 also has an optional THERM output/input which can be connected
to the processor PROC_HOT output. If available, the autofan control
dynamic Tmin feature can be enabled to keep the system temperature within
spec (just?!) with the least possible fan noise.
Configuration Notes
-------------------
Besides standard interfaces driver adds following:
* Temperatures and Zones
Each temperature sensor is associated with a Zone. There are three
sensors and therefore three zones (# 1, 2 and 3). Each zone has the following
temperature configuration points:
* temp#_auto_temp_off - temperature below which fans should be off or spinning very low.
* temp#_auto_temp_min - temperature over which fans start to spin.
* temp#_auto_temp_max - temperature when fans spin at full speed.
* temp#_auto_temp_crit - temperature when all fans will run full speed.
* PWM Control
There are three PWM outputs. The LM85 datasheet suggests that the
pwm3 output control both fan3 and fan4. Each PWM can be individually
configured and assigned to a zone for it's control value. Each PWM can be
configured individually according to the following options.
* pwm#_auto_pwm_min - this specifies the PWM value for temp#_auto_temp_off
temperature. (PWM value from 0 to 255)
* pwm#_auto_pwm_freq - select base frequency of PWM output. You can select
in range of 10.0 to 94.0 Hz in .1 Hz units.
(Values 100 to 940).
The pwm#_auto_pwm_freq can be set to one of the following 8 values. Setting the
frequency to a value not on this list, will result in the next higher frequency
being selected. The actual device frequency may vary slightly from this
specification as designed by the manufacturer. Consult the datasheet for more
details. (PWM Frequency values: 100, 150, 230, 300, 380, 470, 620, 940)
* pwm#_auto_pwm_minctl - this flags selects for temp#_auto_temp_off temperature
the bahaviour of fans. Write 1 to let fans spinning at
pwm#_auto_pwm_min or write 0 to let them off.
NOTE: It has been reported that there is a bug in the LM85 that causes the flag
to be associated with the zones not the PWMs. This contradicts all the
published documentation. Setting pwm#_min_ctl in this case actually affects all
PWMs controlled by zone '#'.
* PWM Controlling Zone selection
* pwm#_auto_channels - controls zone that is associated with PWM
Configuration choices:
Value Meaning
------ ------------------------------------------------
1 Controlled by Zone 1
2 Controlled by Zone 2
3 Controlled by Zone 3
23 Controlled by higher temp of Zone 2 or 3
123 Controlled by highest temp of Zone 1, 2 or 3
0 PWM always 0% (off)
-1 PWM always 100% (full on)
-2 Manual control (write to 'pwm#' to set)
The National LM85's have two vendor specific configuration
features. Tach. mode and Spinup Control. For more details on these,
see the LM85 datasheet or Application Note AN-1260.
The Analog Devices ADM1027 has several vendor specific enhancements.
The number of pulses-per-rev of the fans can be set, Tach monitoring
can be optimized for PWM operation, and an offset can be applied to
the temperatures to compensate for systemic errors in the
measurements.
In addition to the ADM1027 features, the ADT7463 also has Tmin control
and THERM asserted counts. Automatic Tmin control acts to adjust the
Tmin value to maintain the measured temperature sensor at a specified
temperature. There isn't much documentation on this feature in the
ADT7463 data sheet. This is not supported by current driver.

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Kernel driver lm87
==================
Supported chips:
* National Semiconductor LM87
Prefix: 'lm87'
Addresses scanned: I2C 0x2c - 0x2f
Datasheet: http://www.national.com/pf/LM/LM87.html
Authors:
Frodo Looijaard <frodol@dds.nl>,
Philip Edelbrock <phil@netroedge.com>,
Mark Studebaker <mdsxyz123@yahoo.com>,
Stephen Rousset <stephen.rousset@rocketlogix.com>,
Dan Eaton <dan.eaton@rocketlogix.com>,
Jean Delvare <khali@linux-fr.org>,
Original 2.6 port Jeff Oliver
Description
-----------
This driver implements support for the National Semiconductor LM87.
The LM87 implements up to three temperature sensors, up to two fan
rotation speed sensors, up to seven voltage sensors, alarms, and some
miscellaneous stuff.
Temperatures are measured in degrees Celsius. Each input has a high
and low alarm settings. A high limit produces an alarm when the value
goes above it, and an alarm is also produced when the value goes below
the low limit.
Fan rotation speeds are reported in RPM (rotations per minute). An alarm is
triggered if the rotation speed has dropped below a programmable limit. Fan
readings can be divided by a programmable divider (1, 2, 4 or 8) to give
the readings more range or accuracy. Not all RPM values can accurately be
represented, so some rounding is done. With a divider of 2, the lowest
representable value is around 2600 RPM.
Voltage sensors (also known as IN sensors) report their values in
volts. An alarm is triggered if the voltage has crossed a programmable
minimum or maximum limit. Note that minimum in this case always means
'closest to zero'; this is important for negative voltage measurements.
If an alarm triggers, it will remain triggered until the hardware register
is read at least once. This means that the cause for the alarm may
already have disappeared! Note that in the current implementation, all
hardware registers are read whenever any data is read (unless it is less
than 1.0 seconds since the last update). This means that you can easily
miss once-only alarms.
The lm87 driver only updates its values each 1.0 seconds; reading it more
often will do no harm, but will return 'old' values.
Hardware Configurations
-----------------------
The LM87 has four pins which can serve one of two possible functions,
depending on the hardware configuration.
Some functions share pins, so not all functions are available at the same
time. Which are depends on the hardware setup. This driver assumes that
the BIOS configured the chip correctly. In that respect, it differs from
the original driver (from lm_sensors for Linux 2.4), which would force the
LM87 to an arbitrary, compile-time chosen mode, regardless of the actual
chipset wiring.
For reference, here is the list of exclusive functions:
- in0+in5 (default) or temp3
- fan1 (default) or in6
- fan2 (default) or in7
- VID lines (default) or IRQ lines (not handled by this driver)

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Kernel driver lm90
==================
Supported chips:
* National Semiconductor LM90
Prefix: 'lm90'
Addresses scanned: I2C 0x4c
Datasheet: Publicly available at the National Semiconductor website
http://www.national.com/pf/LM/LM90.html
* National Semiconductor LM89
Prefix: 'lm99'
Addresses scanned: I2C 0x4c and 0x4d
Datasheet: Publicly available at the National Semiconductor website
http://www.national.com/pf/LM/LM89.html
* National Semiconductor LM99
Prefix: 'lm99'
Addresses scanned: I2C 0x4c and 0x4d
Datasheet: Publicly available at the National Semiconductor website
http://www.national.com/pf/LM/LM99.html
* National Semiconductor LM86
Prefix: 'lm86'
Addresses scanned: I2C 0x4c
Datasheet: Publicly available at the National Semiconductor website
http://www.national.com/pf/LM/LM86.html
* Analog Devices ADM1032
Prefix: 'adm1032'
Addresses scanned: I2C 0x4c
Datasheet: Publicly available at the Analog Devices website
http://products.analog.com/products/info.asp?product=ADM1032
* Analog Devices ADT7461
Prefix: 'adt7461'
Addresses scanned: I2C 0x4c
Datasheet: Publicly available at the Analog Devices website
http://products.analog.com/products/info.asp?product=ADT7461
Note: Only if in ADM1032 compatibility mode
* Maxim MAX6657
Prefix: 'max6657'
Addresses scanned: I2C 0x4c
Datasheet: Publicly available at the Maxim website
http://www.maxim-ic.com/quick_view2.cfm/qv_pk/2578
* Maxim MAX6658
Prefix: 'max6657'
Addresses scanned: I2C 0x4c
Datasheet: Publicly available at the Maxim website
http://www.maxim-ic.com/quick_view2.cfm/qv_pk/2578
* Maxim MAX6659
Prefix: 'max6657'
Addresses scanned: I2C 0x4c, 0x4d (unsupported 0x4e)
Datasheet: Publicly available at the Maxim website
http://www.maxim-ic.com/quick_view2.cfm/qv_pk/2578
Author: Jean Delvare <khali@linux-fr.org>
Description
-----------
The LM90 is a digital temperature sensor. It senses its own temperature as
well as the temperature of up to one external diode. It is compatible
with many other devices such as the LM86, the LM89, the LM99, the ADM1032,
the MAX6657, MAX6658 and the MAX6659 all of which are supported by this driver.
Note that there is no easy way to differentiate between the last three
variants. The extra address and features of the MAX6659 are not supported by
this driver. Additionally, the ADT7461 is supported if found in ADM1032
compatibility mode.
The specificity of this family of chipsets over the ADM1021/LM84
family is that it features critical limits with hysteresis, and an
increased resolution of the remote temperature measurement.
The different chipsets of the family are not strictly identical, although
very similar. This driver doesn't handle any specific feature for now,
but could if there ever was a need for it. For reference, here comes a
non-exhaustive list of specific features:
LM90:
* Filter and alert configuration register at 0xBF.
* ALERT is triggered by temperatures over critical limits.
LM86 and LM89:
* Same as LM90
* Better external channel accuracy
LM99:
* Same as LM89
* External temperature shifted by 16 degrees down
ADM1032:
* Consecutive alert register at 0x22.
* Conversion averaging.
* Up to 64 conversions/s.
* ALERT is triggered by open remote sensor.
ADT7461
* Extended temperature range (breaks compatibility)
* Lower resolution for remote temperature
MAX6657 and MAX6658:
* Remote sensor type selection
MAX6659
* Selectable address
* Second critical temperature limit
* Remote sensor type selection
All temperature values are given in degrees Celsius. Resolution
is 1.0 degree for the local temperature, 0.125 degree for the remote
temperature.
Each sensor has its own high and low limits, plus a critical limit.
Additionally, there is a relative hysteresis value common to both critical
values. To make life easier to user-space applications, two absolute values
are exported, one for each channel, but these values are of course linked.
Only the local hysteresis can be set from user-space, and the same delta
applies to the remote hysteresis.
The lm90 driver will not update its values more frequently than every
other second; reading them more often will do no harm, but will return
'old' values.

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Kernel driver lm92
==================
Supported chips:
* National Semiconductor LM92
Prefix: 'lm92'
Addresses scanned: I2C 0x48 - 0x4b
Datasheet: http://www.national.com/pf/LM/LM92.html
* National Semiconductor LM76
Prefix: 'lm92'
Addresses scanned: none, force parameter needed
Datasheet: http://www.national.com/pf/LM/LM76.html
* Maxim MAX6633/MAX6634/MAX6635
Prefix: 'lm92'
Addresses scanned: I2C 0x48 - 0x4b
MAX6633 with address in 0x40 - 0x47, 0x4c - 0x4f needs force parameter
and MAX6634 with address in 0x4c - 0x4f needs force parameter
Datasheet: http://www.maxim-ic.com/quick_view2.cfm/qv_pk/3074
Authors:
Abraham van der Merwe <abraham@2d3d.co.za>
Jean Delvare <khali@linux-fr.org>
Description
-----------
This driver implements support for the National Semiconductor LM92
temperature sensor.
Each LM92 temperature sensor supports a single temperature sensor. There are
alarms for high, low, and critical thresholds. There's also an hysteresis to
control the thresholds for resetting alarms.
Support was added later for the LM76 and Maxim MAX6633/MAX6634/MAX6635,
which are mostly compatible. They have not all been tested, so you
may need to use the force parameter.

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Kernel driver max1619
=====================
Supported chips:
* Maxim MAX1619
Prefix: 'max1619'
Addresses scanned: I2C 0x18-0x1a, 0x29-0x2b, 0x4c-0x4e
Datasheet: Publicly available at the Maxim website
http://pdfserv.maxim-ic.com/en/ds/MAX1619.pdf
Authors:
Alexey Fisher <fishor@mail.ru>,
Jean Delvare <khali@linux-fr.org>
Description
-----------
The MAX1619 is a digital temperature sensor. It senses its own temperature as
well as the temperature of up to one external diode.
All temperature values are given in degrees Celsius. Resolution
is 1.0 degree for the local temperature and for the remote temperature.
Only the external sensor has high and low limits.
The max1619 driver will not update its values more frequently than every
other second; reading them more often will do no harm, but will return
'old' values.

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Kernel driver max6875
=====================
Supported chips:
* Maxim max6874, max6875
Prefixes: 'max6875'
Addresses scanned: 0x50, 0x52
Datasheets:
http://pdfserv.maxim-ic.com/en/ds/MAX6874-MAX6875.pdf
Author: Ben Gardner <bgardner@wabtec.com>
Module Parameters
-----------------
* allow_write int
Set to non-zero to enable write permission:
*0: Read only
1: Read and write
Description
-----------
The MAXIM max6875 is a EEPROM-programmable power-supply sequencer/supervisor.
It provides timed outputs that can be used as a watchdog, if properly wired.
It also provides 512 bytes of user EEPROM.
At reset, the max6875 reads the configuration eeprom into its configuration
registers. The chip then begins to operate according to the values in the
registers.
See the datasheet for details on how to program the EEPROM.
Sysfs entries
-------------
eeprom_user - 512 bytes of user-defined EEPROM space. Only writable if
allow_write was set and register 0x43 is 0.
eeprom_config - 70 bytes of config EEPROM. Note that changes will not get
loaded into register space until a power cycle or device reset.
reg_config - 70 bytes of register space. Any changes take affect immediately.
General Remarks
---------------
A typical application will require that the EEPROMs be programmed once and
never altered afterwards.

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Kernel driver pc87360
=====================
Supported chips:
* National Semiconductor PC87360, PC87363, PC87364, PC87365 and PC87366
Prefixes: 'pc87360', 'pc87363', 'pc87364', 'pc87365', 'pc87366'
Addresses scanned: none, address read from Super I/O config space
Datasheets:
http://www.national.com/pf/PC/PC87360.html
http://www.national.com/pf/PC/PC87363.html
http://www.national.com/pf/PC/PC87364.html
http://www.national.com/pf/PC/PC87365.html
http://www.national.com/pf/PC/PC87366.html
Authors: Jean Delvare <khali@linux-fr.org>
Thanks to Sandeep Mehta, Tonko de Rooy and Daniel Ceregatti for testing.
Thanks to Rudolf Marek for helping me investigate conversion issues.
Module Parameters
-----------------
* init int
Chip initialization level:
0: None
*1: Forcibly enable internal voltage and temperature channels, except in9
2: Forcibly enable all voltage and temperature channels, except in9
3: Forcibly enable all voltage and temperature channels, including in9
Note that this parameter has no effect for the PC87360, PC87363 and PC87364
chips.
Also note that for the PC87366, initialization levels 2 and 3 don't enable
all temperature channels, because some of them share pins with each other,
so they can't be used at the same time.
Description
-----------
The National Semiconductor PC87360 Super I/O chip contains monitoring and
PWM control circuitry for two fans. The PC87363 chip is similar, and the
PC87364 chip has monitoring and PWM control for a third fan.
The National Semiconductor PC87365 and PC87366 Super I/O chips are complete
hardware monitoring chipsets, not only controlling and monitoring three fans,
but also monitoring eleven voltage inputs and two (PC87365) or up to four
(PC87366) temperatures.
Chip #vin #fan #pwm #temp devid
PC87360 - 2 2 - 0xE1
PC87363 - 2 2 - 0xE8
PC87364 - 3 3 - 0xE4
PC87365 11 3 3 2 0xE5
PC87366 11 3 3 3-4 0xE9
The driver assumes that no more than one chip is present, and one of the
standard Super I/O addresses is used (0x2E/0x2F or 0x4E/0x4F)
Fan Monitoring
--------------
Fan rotation speeds are reported in RPM (revolutions per minute). An alarm
is triggered if the rotation speed has dropped below a programmable limit.
A different alarm is triggered if the fan speed is too low to be measured.
Fan readings are affected by a programmable clock divider, giving the
readings more range or accuracy. Usually, users have to learn how it works,
but this driver implements dynamic clock divider selection, so you don't
have to care no more.
For reference, here are a few values about clock dividers:
slowest accuracy highest
measurable around 3000 accurate
divider speed (RPM) RPM (RPM) speed (RPM)
1 1882 18 6928
2 941 37 4898
4 470 74 3464
8 235 150 2449
For the curious, here is how the values above were computed:
* slowest measurable speed: clock/(255*divider)
* accuracy around 3000 RPM: 3000^2/clock
* highest accurate speed: sqrt(clock*100)
The clock speed for the PC87360 family is 480 kHz. I arbitrarily chose 100
RPM as the lowest acceptable accuracy.
As mentioned above, you don't have to care about this no more.
Note that not all RPM values can be represented, even when the best clock
divider is selected. This is not only true for the measured speeds, but
also for the programmable low limits, so don't be surprised if you try to
set, say, fan1_min to 2900 and it finally reads 2909.
Fan Control
-----------
PWM (pulse width modulation) values range from 0 to 255, with 0 meaning
that the fan is stopped, and 255 meaning that the fan goes at full speed.
Be extremely careful when changing PWM values. Low PWM values, even
non-zero, can stop the fan, which may cause irreversible damage to your
hardware if temperature increases too much. When changing PWM values, go
step by step and keep an eye on temperatures.
One user reported problems with PWM. Changing PWM values would break fan
speed readings. No explanation nor fix could be found.
Temperature Monitoring
----------------------
Temperatures are reported in degrees Celsius. Each temperature measured has
associated low, high and overtemperature limits, each of which triggers an
alarm when crossed.
The first two temperature channels are external. The third one (PC87366
only) is internal.
The PC87366 has three additional temperature channels, based on
thermistors (as opposed to thermal diodes for the first three temperature
channels). For technical reasons, these channels are held by the VLM
(voltage level monitor) logical device, not the TMS (temperature
measurement) one. As a consequence, these temperatures are exported as
voltages, and converted into temperatures in user-space.
Note that these three additional channels share their pins with the
external thermal diode channels, so you (physically) can't use them all at
the same time. Although it should be possible to mix the two sensor types,
the documents from National Semiconductor suggest that motherboard
manufacturers should choose one type and stick to it. So you will more
likely have either channels 1 to 3 (thermal diodes) or 3 to 6 (internal
thermal diode, and thermistors).
Voltage Monitoring
------------------
Voltages are reported relatively to a reference voltage, either internal or
external. Some of them (in7:Vsb, in8:Vdd and in10:AVdd) are divided by two
internally, you will have to compensate in sensors.conf. Others (in0 to in6)
are likely to be divided externally. The meaning of each of these inputs as
well as the values of the resistors used for division is left to the
motherboard manufacturers, so you will have to document yourself and edit
sensors.conf accordingly. National Semiconductor has a document with
recommended resistor values for some voltages, but this still leaves much
room for per motherboard specificities, unfortunately. Even worse,
motherboard manufacturers don't seem to care about National Semiconductor's
recommendations.
Each voltage measured has associated low and high limits, each of which
triggers an alarm when crossed.
When available, VID inputs are used to provide the nominal CPU Core voltage.
The driver will default to VRM 9.0, but this can be changed from user-space.
The chipsets can handle two sets of VID inputs (on dual-CPU systems), but
the driver will only export one for now. This may change later if there is
a need.
General Remarks
---------------
If an alarm triggers, it will remain triggered until the hardware register
is read at least once. This means that the cause for the alarm may already
have disappeared! Note that all hardware registers are read whenever any
data is read (unless it is less than 2 seconds since the last update, in
which case cached values are returned instead). As a consequence, when
a once-only alarm triggers, it may take 2 seconds for it to show, and 2
more seconds for it to disappear.
Monitoring of in9 isn't enabled at lower init levels (<3) because that
channel measures the battery voltage (Vbat). It is a known fact that
repeatedly sampling the battery voltage reduces its lifetime. National
Semiconductor smartly designed their chipset so that in9 is sampled only
once every 1024 sampling cycles (that is every 34 minutes at the default
sampling rate), so the effect is attenuated, but still present.
Limitations
-----------
The datasheets suggests that some values (fan mins, fan dividers)
shouldn't be changed once the monitoring has started, but we ignore that
recommendation. We'll reconsider if it actually causes trouble.

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Kernel driver pca9539
=====================
Supported chips:
* Philips PCA9539
Prefix: 'pca9539'
Addresses scanned: 0x74 - 0x77
Datasheet:
http://www.semiconductors.philips.com/acrobat/datasheets/PCA9539_2.pdf
Author: Ben Gardner <bgardner@wabtec.com>
Description
-----------
The Philips PCA9539 is a 16 bit low power I/O device.
All 16 lines can be individually configured as an input or output.
The input sense can also be inverted.
The 16 lines are split between two bytes.
Sysfs entries
-------------
Each is a byte that maps to the 8 I/O bits.
A '0' suffix is for bits 0-7, while '1' is for bits 8-15.
input[01] - read the current value
output[01] - sets the output value
direction[01] - direction of each bit: 1=input, 0=output
invert[01] - toggle the input bit sense
input reads the actual state of the line and is always available.
The direction defaults to input for all channels.
General Remarks
---------------
Note that each output, direction, and invert entry controls 8 lines.
You should use the read, modify, write sequence.
For example. to set output bit 0 of 1.
val=$(cat output0)
val=$(( $val | 1 ))
echo $val > output0

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Kernel driver pcf8574
=====================
Supported chips:
* Philips PCF8574
Prefix: 'pcf8574'
Addresses scanned: I2C 0x20 - 0x27
Datasheet: Publicly available at the Philips Semiconductors website
http://www.semiconductors.philips.com/pip/PCF8574P.html
* Philips PCF8574A
Prefix: 'pcf8574a'
Addresses scanned: I2C 0x38 - 0x3f
Datasheet: Publicly available at the Philips Semiconductors website
http://www.semiconductors.philips.com/pip/PCF8574P.html
Authors:
Frodo Looijaard <frodol@dds.nl>,
Philip Edelbrock <phil@netroedge.com>,
Dan Eaton <dan.eaton@rocketlogix.com>,
Aurelien Jarno <aurelien@aurel32.net>,
Jean Delvare <khali@linux-fr.org>,
Description
-----------
The PCF8574(A) is an 8-bit I/O expander for the I2C bus produced by Philips
Semiconductors. It is designed to provide a byte I2C interface to up to 16
separate devices (8 x PCF8574 and 8 x PCF8574A).
This device consists of a quasi-bidirectional port. Each of the eight I/Os
can be independently used as an input or output. To setup an I/O as an
input, you have to write a 1 to the corresponding output.
For more informations see the datasheet.
Accessing PCF8574(A) via /sys interface
-------------------------------------
! Be careful !
The PCF8574(A) is plainly impossible to detect ! Stupid chip.
So every chip with address in the interval [20..27] and [38..3f] are
detected as PCF8574(A). If you have other chips in this address
range, the workaround is to load this module after the one
for your others chips.
On detection (i.e. insmod, modprobe et al.), directories are being
created for each detected PCF8574(A):
/sys/bus/i2c/devices/<0>-<1>/
where <0> is the bus the chip was detected on (e. g. i2c-0)
and <1> the chip address ([20..27] or [38..3f]):
(example: /sys/bus/i2c/devices/1-0020/)
Inside these directories, there are two files each:
read and write (and one file with chip name).
The read file is read-only. Reading gives you the current I/O input
if the corresponding output is set as 1, otherwise the current output
value, that is to say 0.
The write file is read/write. Writing a value outputs it on the I/O
port. Reading returns the last written value.
On module initialization the chip is configured as eight inputs (all
outputs to 1), so you can connect any circuit to the PCF8574(A) without
being afraid of short-circuit.

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Kernel driver pcf8591
=====================
Supported chips:
* Philips PCF8591
Prefix: 'pcf8591'
Addresses scanned: I2C 0x48 - 0x4f
Datasheet: Publicly available at the Philips Semiconductor website
http://www.semiconductors.philips.com/pip/PCF8591P.html
Authors:
Aurelien Jarno <aurelien@aurel32.net>
valuable contributions by Jan M. Sendler <sendler@sendler.de>,
Jean Delvare <khali@linux-fr.org>
Description
-----------
The PCF8591 is an 8-bit A/D and D/A converter (4 analog inputs and one
analog output) for the I2C bus produced by Philips Semiconductors. It
is designed to provide a byte I2C interface to up to 4 separate devices.
The PCF8591 has 4 analog inputs programmable as single-ended or
differential inputs :
- mode 0 : four single ended inputs
Pins AIN0 to AIN3 are single ended inputs for channels 0 to 3
- mode 1 : three differential inputs
Pins AIN3 is the common negative differential input
Pins AIN0 to AIN2 are positive differential inputs for channels 0 to 2
- mode 2 : single ended and differential mixed
Pins AIN0 and AIN1 are single ended inputs for channels 0 and 1
Pins AIN2 is the positive differential input for channel 3
Pins AIN3 is the negative differential input for channel 3
- mode 3 : two differential inputs
Pins AIN0 is the positive differential input for channel 0
Pins AIN1 is the negative differential input for channel 0
Pins AIN2 is the positive differential input for channel 1
Pins AIN3 is the negative differential input for channel 1
See the datasheet for details.
Module parameters
-----------------
* input_mode int
Analog input mode:
0 = four single ended inputs
1 = three differential inputs
2 = single ended and differential mixed
3 = two differential inputs
Accessing PCF8591 via /sys interface
-------------------------------------
! Be careful !
The PCF8591 is plainly impossible to detect ! Stupid chip.
So every chip with address in the interval [48..4f] is
detected as PCF8591. If you have other chips in this address
range, the workaround is to load this module after the one
for your others chips.
On detection (i.e. insmod, modprobe et al.), directories are being
created for each detected PCF8591:
/sys/bus/devices/<0>-<1>/
where <0> is the bus the chip was detected on (e. g. i2c-0)
and <1> the chip address ([48..4f])
Inside these directories, there are such files:
in0, in1, in2, in3, out0_enable, out0_output, name
Name contains chip name.
The in0, in1, in2 and in3 files are RO. Reading gives the value of the
corresponding channel. Depending on the current analog inputs configuration,
files in2 and/or in3 do not exist. Values range are from 0 to 255 for single
ended inputs and -128 to +127 for differential inputs (8-bit ADC).
The out0_enable file is RW. Reading gives "1" for analog output enabled and
"0" for analog output disabled. Writing accepts "0" and "1" accordingly.
The out0_output file is RW. Writing a number between 0 and 255 (8-bit DAC), send
the value to the digital-to-analog converter. Note that a voltage will
only appears on AOUT pin if aout0_enable equals 1. Reading returns the last
value written.

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Kernel driver sis5595
=====================
Supported chips:
* Silicon Integrated Systems Corp. SiS5595 Southbridge Hardware Monitor
Prefix: 'sis5595'
Addresses scanned: ISA in PCI-space encoded address
Datasheet: Publicly available at the Silicon Integrated Systems Corp. site.
Authors:
Kyösti Mälkki <kmalkki@cc.hut.fi>,
Mark D. Studebaker <mdsxyz123@yahoo.com>,
Aurelien Jarno <aurelien@aurel32.net> 2.6 port
SiS southbridge has a LM78-like chip integrated on the same IC.
This driver is a customized copy of lm78.c
Supports following revisions:
Version PCI ID PCI Revision
1 1039/0008 AF or less
2 1039/0008 B0 or greater
Note: these chips contain a 0008 device which is incompatible with the
5595. We recognize these by the presence of the listed
"blacklist" PCI ID and refuse to load.
NOT SUPPORTED PCI ID BLACKLIST PCI ID
540 0008 0540
550 0008 0550
5513 0008 5511
5581 0008 5597
5582 0008 5597
5597 0008 5597
630 0008 0630
645 0008 0645
730 0008 0730
735 0008 0735
Module Parameters
-----------------
force_addr=0xaddr Set the I/O base address. Useful for boards
that don't set the address in the BIOS. Does not do a
PCI force; the device must still be present in lspci.
Don't use this unless the driver complains that the
base address is not set.
Example: 'modprobe sis5595 force_addr=0x290'
Description
-----------
The SiS5595 southbridge has integrated hardware monitor functions. It also
has an I2C bus, but this driver only supports the hardware monitor. For the
I2C bus driver see i2c-sis5595.
The SiS5595 implements zero or one temperature sensor, two fan speed
sensors, four or five voltage sensors, and alarms.
On the first version of the chip, there are four voltage sensors and one
temperature sensor.
On the second version of the chip, the temperature sensor (temp) and the
fifth voltage sensor (in4) share a pin which is configurable, but not
through the driver. Sorry. The driver senses the configuration of the pin,
which was hopefully set by the BIOS.
Temperatures are measured in degrees Celsius. An alarm is triggered once
when the max is crossed; it is also triggered when it drops below the min
value. Measurements are guaranteed between -55 and +125 degrees, with a
resolution of 1 degree.
Fan rotation speeds are reported in RPM (rotations per minute). An alarm is
triggered if the rotation speed has dropped below a programmable limit. Fan
readings can be divided by a programmable divider (1, 2, 4 or 8) to give
the readings more range or accuracy. Not all RPM values can accurately be
represented, so some rounding is done. With a divider of 2, the lowest
representable value is around 2600 RPM.
Voltage sensors (also known as IN sensors) report their values in volts. An
alarm is triggered if the voltage has crossed a programmable minimum or
maximum limit. Note that minimum in this case always means 'closest to
zero'; this is important for negative voltage measurements. All voltage
inputs can measure voltages between 0 and 4.08 volts, with a resolution of
0.016 volt.
In addition to the alarms described above, there is a BTI alarm, which gets
triggered when an external chip has crossed its limits. Usually, this is
connected to some LM75-like chip; if at least one crosses its limits, this
bit gets set.
If an alarm triggers, it will remain triggered until the hardware register
is read at least once. This means that the cause for the alarm may already
have disappeared! Note that in the current implementation, all hardware
registers are read whenever any data is read (unless it is less than 1.5
seconds since the last update). This means that you can easily miss
once-only alarms.
The SiS5595 only updates its values each 1.5 seconds; reading it more often
will do no harm, but will return 'old' values.
Problems
--------
Some chips refuse to be enabled. We don't know why.
The driver will recognize this and print a message in dmesg.

46
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@ -1,7 +1,19 @@
Kernel driver smsc47b397
========================
Supported chips:
* SMSC LPC47B397-NC
Prefix: 'smsc47b397'
Addresses scanned: none, address read from Super I/O config space
Datasheet: In this file
Authors: Mark M. Hoffman <mhoffman@lightlink.com>
Utilitek Systems, Inc.
November 23, 2004
The following specification describes the SMSC LPC47B397-NC sensor chip
(for which there is no public datasheet available). This document was
(for which there is no public datasheet available). This document was
provided by Craig Kelly (In-Store Broadcast Network) and edited/corrected
by Mark M. Hoffman <mhoffman@lightlink.com>.
@ -10,10 +22,10 @@ by Mark M. Hoffman <mhoffman@lightlink.com>.
Methods for detecting the HP SIO and reading the thermal data on a dc7100.
The thermal information on the dc7100 is contained in the SIO Hardware Monitor
(HWM). The information is accessed through an index/data pair. The index/data
pair is located at the HWM Base Address + 0 and the HWM Base Address + 1. The
(HWM). The information is accessed through an index/data pair. The index/data
pair is located at the HWM Base Address + 0 and the HWM Base Address + 1. The
HWM Base address can be obtained from Logical Device 8, registers 0x60 (MSB)
and 0x61 (LSB). Currently we are using 0x480 for the HWM Base Address and
and 0x61 (LSB). Currently we are using 0x480 for the HWM Base Address and
0x480 and 0x481 for the index/data pair.
Reading temperature information.
@ -50,7 +62,7 @@ Reading the tach LSB locks the tach MSB.
The LSB Must be read first.
How to convert the tach reading to RPM.
The tach reading (TCount) is given by: (Tach MSB * 256) + (Tach LSB)
The tach reading (TCount) is given by: (Tach MSB * 256) + (Tach LSB)
The SIO counts the number of 90kHz (11.111us) pulses per revolution.
RPM = 60/(TCount * 11.111us)
@ -72,20 +84,20 @@ To program the configuration registers, the following sequence must be followed:
Enter Configuration Mode
To place the chip into the Configuration State The config key (0x55) is written
to the CONFIG PORT (0x2E).
to the CONFIG PORT (0x2E).
Configuration Mode
In configuration mode, the INDEX PORT is located at the CONFIG PORT address and
the DATA PORT is at INDEX PORT address + 1.
The desired configuration registers are accessed in two steps:
The desired configuration registers are accessed in two steps:
a. Write the index of the Logical Device Number Configuration Register
(i.e., 0x07) to the INDEX PORT and then write the number of the
desired logical device to the DATA PORT.
b. Write the address of the desired configuration register within the
logical device to the INDEX PORT and then write or read the config-
uration register through the DATA PORT.
uration register through the DATA PORT.
Note: If accessing the Global Configuration Registers, step (a) is not required.
@ -96,18 +108,18 @@ The chip returns to the RUN State. (This is important).
Programming Example
The following is an example of how to read the SIO Device ID located at 0x20
; ENTER CONFIGURATION MODE
; ENTER CONFIGURATION MODE
MOV DX,02EH
MOV AX,055H
OUT DX,AL
; GLOBAL CONFIGURATION REGISTER
; GLOBAL CONFIGURATION REGISTER
MOV DX,02EH
MOV AL,20H
OUT DX,AL
OUT DX,AL
; READ THE DATA
MOV DX,02FH
IN AL,DX
; EXIT CONFIGURATION MODE
; EXIT CONFIGURATION MODE
MOV DX,02EH
MOV AX,0AAH
OUT DX,AL
@ -122,12 +134,12 @@ Obtaining the HWM Base Address.
The following is an example of how to read the HWM Base Address located in
Logical Device 8.
; ENTER CONFIGURATION MODE
; ENTER CONFIGURATION MODE
MOV DX,02EH
MOV AX,055H
OUT DX,AL
; CONFIGURE REGISTER CRE0,
; LOGICAL DEVICE 8
; CONFIGURE REGISTER CRE0,
; LOGICAL DEVICE 8
MOV DX,02EH
MOV AL,07H
OUT DX,AL ;Point to LD# Config Reg
@ -135,12 +147,12 @@ MOV DX,02FH
MOV AL, 08H
OUT DX,AL;Point to Logical Device 8
;
MOV DX,02EH
MOV DX,02EH
MOV AL,60H
OUT DX,AL ; Point to HWM Base Addr MSB
MOV DX,02FH
IN AL,DX ; Get MSB of HWM Base Addr
; EXIT CONFIGURATION MODE
; EXIT CONFIGURATION MODE
MOV DX,02EH
MOV AX,0AAH
OUT DX,AL

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Kernel driver smsc47m1
======================
Supported chips:
* SMSC LPC47B27x, LPC47M10x, LPC47M13x, LPC47M14x, LPC47M15x and LPC47M192
Addresses scanned: none, address read from Super I/O config space
Prefix: 'smsc47m1'
Datasheets:
http://www.smsc.com/main/datasheets/47b27x.pdf
http://www.smsc.com/main/datasheets/47m10x.pdf
http://www.smsc.com/main/tools/discontinued/47m13x.pdf
http://www.smsc.com/main/datasheets/47m14x.pdf
http://www.smsc.com/main/tools/discontinued/47m15x.pdf
http://www.smsc.com/main/datasheets/47m192.pdf
Authors:
Mark D. Studebaker <mdsxyz123@yahoo.com>,
With assistance from Bruce Allen <ballen@uwm.edu>, and his
fan.c program: http://www.lsc-group.phys.uwm.edu/%7Eballen/driver/
Gabriele Gorla <gorlik@yahoo.com>,
Jean Delvare <khali@linux-fr.org>
Description
-----------
The Standard Microsystems Corporation (SMSC) 47M1xx Super I/O chips
contain monitoring and PWM control circuitry for two fans.
The 47M15x and 47M192 chips contain a full 'hardware monitoring block'
in addition to the fan monitoring and control. The hardware monitoring
block is not supported by the driver.
Fan rotation speeds are reported in RPM (rotations per minute). An alarm is
triggered if the rotation speed has dropped below a programmable limit. Fan
readings can be divided by a programmable divider (1, 2, 4 or 8) to give
the readings more range or accuracy. Not all RPM values can accurately be
represented, so some rounding is done. With a divider of 2, the lowest
representable value is around 2600 RPM.
PWM values are from 0 to 255.
If an alarm triggers, it will remain triggered until the hardware register
is read at least once. This means that the cause for the alarm may
already have disappeared! Note that in the current implementation, all
hardware registers are read whenever any data is read (unless it is less
than 1.5 seconds since the last update). This means that you can easily
miss once-only alarms.
**********************
The lm_sensors project gratefully acknowledges the support of
Intel in the development of this driver.

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Kernel driver via686a
=====================
Supported chips:
* Via VT82C686A, VT82C686B Southbridge Integrated Hardware Monitor
Prefix: 'via686a'
Addresses scanned: ISA in PCI-space encoded address
Datasheet: On request through web form (http://www.via.com.tw/en/support/datasheets/)
Authors:
Kyösti Mälkki <kmalkki@cc.hut.fi>,
Mark D. Studebaker <mdsxyz123@yahoo.com>
Bob Dougherty <bobd@stanford.edu>
(Some conversion-factor data were contributed by
Jonathan Teh Soon Yew <j.teh@iname.com>
and Alex van Kaam <darkside@chello.nl>.)
Module Parameters
-----------------
force_addr=0xaddr Set the I/O base address. Useful for Asus A7V boards
that don't set the address in the BIOS. Does not do a
PCI force; the via686a must still be present in lspci.
Don't use this unless the driver complains that the
base address is not set.
Example: 'modprobe via686a force_addr=0x6000'
Description
-----------
The driver does not distinguish between the chips and reports
all as a 686A.
The Via 686a southbridge has integrated hardware monitor functionality.
It also has an I2C bus, but this driver only supports the hardware monitor.
For the I2C bus driver, see <file:Documentation/i2c/busses/i2c-viapro>
The Via 686a implements three temperature sensors, two fan rotation speed
sensors, five voltage sensors and alarms.
Temperatures are measured in degrees Celsius. An alarm is triggered once
when the Overtemperature Shutdown limit is crossed; it is triggered again
as soon as it drops below the hysteresis value.
Fan rotation speeds are reported in RPM (rotations per minute). An alarm is
triggered if the rotation speed has dropped below a programmable limit. Fan
readings can be divided by a programmable divider (1, 2, 4 or 8) to give
the readings more range or accuracy. Not all RPM values can accurately be
represented, so some rounding is done. With a divider of 2, the lowest
representable value is around 2600 RPM.
Voltage sensors (also known as IN sensors) report their values in volts.
An alarm is triggered if the voltage has crossed a programmable minimum
or maximum limit. Voltages are internally scalled, so each voltage channel
has a different resolution and range.
If an alarm triggers, it will remain triggered until the hardware register
is read at least once. This means that the cause for the alarm may
already have disappeared! Note that in the current implementation, all
hardware registers are read whenever any data is read (unless it is less
than 1.5 seconds since the last update). This means that you can easily
miss once-only alarms.
The driver only updates its values each 1.5 seconds; reading it more often
will do no harm, but will return 'old' values.

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Kernel driver w83627hf
======================
Supported chips:
* Winbond W83627HF (ISA accesses ONLY)
Prefix: 'w83627hf'
Addresses scanned: ISA address retrieved from Super I/O registers
Datasheet: http://www.winbond.com/PDF/sheet/w83627hf.pdf
* Winbond W83627THF
Prefix: 'w83627thf'
Addresses scanned: ISA address retrieved from Super I/O registers
Datasheet: http://www.winbond.com/PDF/sheet/w83627thf.pdf
* Winbond W83697HF
Prefix: 'w83697hf'
Addresses scanned: ISA address retrieved from Super I/O registers
Datasheet: http://www.winbond.com/PDF/sheet/697hf.pdf
* Winbond W83637HF
Prefix: 'w83637hf'
Addresses scanned: ISA address retrieved from Super I/O registers
Datasheet: http://www.winbond.com/PDF/sheet/w83637hf.pdf
Authors:
Frodo Looijaard <frodol@dds.nl>,
Philip Edelbrock <phil@netroedge.com>,
Mark Studebaker <mdsxyz123@yahoo.com>,
Bernhard C. Schrenk <clemy@clemy.org>
Module Parameters
-----------------
* force_addr: int
Initialize the ISA address of the sensors
* force_i2c: int
Initialize the I2C address of the sensors
* init: int
(default is 1)
Use 'init=0' to bypass initializing the chip.
Try this if your computer crashes when you load the module.
Description
-----------
This driver implements support for ISA accesses *only* for
the Winbond W83627HF, W83627THF, W83697HF and W83637HF Super I/O chips.
We will refer to them collectively as Winbond chips.
This driver supports ISA accesses, which should be more reliable
than i2c accesses. Also, for Tyan boards which contain both a
Super I/O chip and a second i2c-only Winbond chip (often a W83782D),
using this driver will avoid i2c address conflicts and complex
initialization that were required in the w83781d driver.
If you really want i2c accesses for these Super I/O chips,
use the w83781d driver. However this is not the preferred method
now that this ISA driver has been developed.
Technically, the w83627thf does not support a VID reading. However, it's
possible or even likely that your mainboard maker has routed these signals
to a specific set of general purpose IO pins (the Asus P4C800-E is one such
board). The w83627thf driver now interprets these as VID. If the VID on
your board doesn't work, first see doc/vid in the lm_sensors package. If
that still doesn't help, email us at lm-sensors@lm-sensors.org.
For further information on this driver see the w83781d driver
documentation.

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Kernel driver w83781d
=====================
Supported chips:
* Winbond W83781D
Prefix: 'w83781d'
Addresses scanned: I2C 0x20 - 0x2f, ISA 0x290 (8 I/O ports)
Datasheet: http://www.winbond-usa.com/products/winbond_products/pdfs/PCIC/w83781d.pdf
* Winbond W83782D
Prefix: 'w83782d'
Addresses scanned: I2C 0x20 - 0x2f, ISA 0x290 (8 I/O ports)
Datasheet: http://www.winbond.com/PDF/sheet/w83782d.pdf
* Winbond W83783S
Prefix: 'w83783s'
Addresses scanned: I2C 0x2d
Datasheet: http://www.winbond-usa.com/products/winbond_products/pdfs/PCIC/w83783s.pdf
* Winbond W83627HF
Prefix: 'w83627hf'
Addresses scanned: I2C 0x20 - 0x2f, ISA 0x290 (8 I/O ports)
Datasheet: http://www.winbond.com/PDF/sheet/w83627hf.pdf
* Asus AS99127F
Prefix: 'as99127f'
Addresses scanned: I2C 0x28 - 0x2f
Datasheet: Unavailable from Asus
Authors:
Frodo Looijaard <frodol@dds.nl>,
Philip Edelbrock <phil@netroedge.com>,
Mark Studebaker <mdsxyz123@yahoo.com>
Module parameters
-----------------
* init int
(default 1)
Use 'init=0' to bypass initializing the chip.
Try this if your computer crashes when you load the module.
force_subclients=bus,caddr,saddr,saddr
This is used to force the i2c addresses for subclients of
a certain chip. Typical usage is `force_subclients=0,0x2d,0x4a,0x4b'
to force the subclients of chip 0x2d on bus 0 to i2c addresses
0x4a and 0x4b. This parameter is useful for certain Tyan boards.
Description
-----------
This driver implements support for the Winbond W83781D, W83782D, W83783S,
W83627HF chips, and the Asus AS99127F chips. We will refer to them
collectively as W8378* chips.
There is quite some difference between these chips, but they are similar
enough that it was sensible to put them together in one driver.
The W83627HF chip is assumed to be identical to the ISA W83782D.
The Asus chips are similar to an I2C-only W83782D.
Chip #vin #fanin #pwm #temp wchipid vendid i2c ISA
as99127f 7 3 0 3 0x31 0x12c3 yes no
as99127f rev.2 (type_name = as99127f) 0x31 0x5ca3 yes no
w83781d 7 3 0 3 0x10-1 0x5ca3 yes yes
w83627hf 9 3 2 3 0x21 0x5ca3 yes yes(LPC)
w83782d 9 3 2-4 3 0x30 0x5ca3 yes yes
w83783s 5-6 3 2 1-2 0x40 0x5ca3 yes no
Detection of these chips can sometimes be foiled because they can be in
an internal state that allows no clean access. If you know the address
of the chip, use a 'force' parameter; this will put them into a more
well-behaved state first.
The W8378* implements temperature sensors (three on the W83781D and W83782D,
two on the W83783S), three fan rotation speed sensors, voltage sensors
(seven on the W83781D, nine on the W83782D and six on the W83783S), VID
lines, alarms with beep warnings, and some miscellaneous stuff.
Temperatures are measured in degrees Celsius. There is always one main
temperature sensor, and one (W83783S) or two (W83781D and W83782D) other
sensors. An alarm is triggered for the main sensor once when the
Overtemperature Shutdown limit is crossed; it is triggered again as soon as
it drops below the Hysteresis value. A more useful behavior
can be found by setting the Hysteresis value to +127 degrees Celsius; in
this case, alarms are issued during all the time when the actual temperature
is above the Overtemperature Shutdown value. The driver sets the
hysteresis value for temp1 to 127 at initialization.
For the other temperature sensor(s), an alarm is triggered when the
temperature gets higher then the Overtemperature Shutdown value; it stays
on until the temperature falls below the Hysteresis value. But on the
W83781D, there is only one alarm that functions for both other sensors!
Temperatures are guaranteed within a range of -55 to +125 degrees. The
main temperature sensors has a resolution of 1 degree; the other sensor(s)
of 0.5 degree.
Fan rotation speeds are reported in RPM (rotations per minute). An alarm is
triggered if the rotation speed has dropped below a programmable limit. Fan
readings can be divided by a programmable divider (1, 2, 4 or 8 for the
W83781D; 1, 2, 4, 8, 16, 32, 64 or 128 for the others) to give
the readings more range or accuracy. Not all RPM values can accurately
be represented, so some rounding is done. With a divider of 2, the lowest
representable value is around 2600 RPM.
Voltage sensors (also known as IN sensors) report their values in volts.
An alarm is triggered if the voltage has crossed a programmable minimum
or maximum limit. Note that minimum in this case always means 'closest to
zero'; this is important for negative voltage measurements. All voltage
inputs can measure voltages between 0 and 4.08 volts, with a resolution
of 0.016 volt.
The VID lines encode the core voltage value: the voltage level your processor
should work with. This is hardcoded by the mainboard and/or processor itself.
It is a value in volts. When it is unconnected, you will often find the
value 3.50 V here.
The W83782D and W83783S temperature conversion machine understands about
several kinds of temperature probes. You can program the so-called
beta value in the sensor files. '1' is the PII/Celeron diode, '2' is the
TN3904 transistor, and 3435 the default thermistor value. Other values
are (not yet) supported.
In addition to the alarms described above, there is a CHAS alarm on the
chips which triggers if your computer case is open.
When an alarm goes off, you can be warned by a beeping signal through
your computer speaker. It is possible to enable all beeping globally,
or only the beeping for some alarms.
If an alarm triggers, it will remain triggered until the hardware register
is read at least once. This means that the cause for the alarm may
already have disappeared! Note that in the current implementation, all
hardware registers are read whenever any data is read (unless it is less
than 1.5 seconds since the last update). This means that you can easily
miss once-only alarms.
The chips only update values each 1.5 seconds; reading them more often
will do no harm, but will return 'old' values.
AS99127F PROBLEMS
-----------------
The as99127f support was developed without the benefit of a datasheet.
In most cases it is treated as a w83781d (although revision 2 of the
AS99127F looks more like a w83782d).
This support will be BETA until a datasheet is released.
One user has reported problems with fans stopping
occasionally.
Note that the individual beep bits are inverted from the other chips.
The driver now takes care of this so that user-space applications
don't have to know about it.
Known problems:
- Problems with diode/thermistor settings (supported?)
- One user reports fans stopping under high server load.
- Revision 2 seems to have 2 PWM registers but we don't know
how to handle them. More details below.
These will not be fixed unless we get a datasheet.
If you have problems, please lobby Asus to release a datasheet.
Unfortunately several others have without success.
Please do not send mail to us asking for better as99127f support.
We have done the best we can without a datasheet.
Please do not send mail to the author or the sensors group asking for
a datasheet or ideas on how to convince Asus. We can't help.
NOTES:
-----
783s has no in1 so that in[2-6] are compatible with the 781d/782d.
783s pin is programmable for -5V or temp1; defaults to -5V,
no control in driver so temp1 doesn't work.
782d and 783s datasheets differ on which is pwm1 and which is pwm2.
We chose to follow 782d.
782d and 783s pin is programmable for fan3 input or pwm2 output;
defaults to fan3 input.
If pwm2 is enabled (with echo 255 1 > pwm2), then
fan3 will report 0.
782d has pwm1-2 for ISA, pwm1-4 for i2c. (pwm3-4 share pins with
the ISA pins)
Data sheet updates:
------------------
- PWM clock registers:
000: master / 512
001: master / 1024
010: master / 2048
011: master / 4096
100: master / 8192
Answers from Winbond tech support
---------------------------------
>
> 1) In the W83781D data sheet section 7.2 last paragraph, it talks about
> reprogramming the R-T table if the Beta of the thermistor is not
> 3435K. The R-T table is described briefly in section 8.20.
> What formulas do I use to program a new R-T table for a given Beta?
>
We are sorry that the calculation for R-T table value is
confidential. If you have another Beta value of thermistor, we can help
to calculate the R-T table for you. But you should give us real R-T
Table which can be gotten by thermistor vendor. Therefore we will calculate
them and obtain 32-byte data, and you can fill the 32-byte data to the
register in Bank0.CR51 of W83781D.
> 2) In the W83782D data sheet, it mentions that pins 38, 39, and 40 are
> programmable to be either thermistor or Pentium II diode inputs.
> How do I program them for diode inputs? I can't find any register
> to program these to be diode inputs.
--> You may program Bank0 CR[5Dh] and CR[59h] registers.
CR[5Dh] bit 1(VTIN1) bit 2(VTIN2) bit 3(VTIN3)
thermistor 0 0 0
diode 1 1 1
(error) CR[59h] bit 4(VTIN1) bit 2(VTIN2) bit 3(VTIN3)
(right) CR[59h] bit 4(VTIN1) bit 5(VTIN2) bit 6(VTIN3)
PII thermal diode 1 1 1
2N3904 diode 0 0 0
Asus Clones
-----------
We have no datasheets for the Asus clones (AS99127F and ASB100 Bach).
Here are some very useful information that were given to us by Alex Van
Kaam about how to detect these chips, and how to read their values. He
also gives advice for another Asus chipset, the Mozart-2 (which we
don't support yet). Thanks Alex!
I reworded some parts and added personal comments.
# Detection:
AS99127F rev.1, AS99127F rev.2 and ASB100:
- I2C address range: 0x29 - 0x2F
- If register 0x58 holds 0x31 then we have an Asus (either ASB100 or
AS99127F)
- Which one depends on register 0x4F (manufacturer ID):
0x06 or 0x94: ASB100
0x12 or 0xC3: AS99127F rev.1
0x5C or 0xA3: AS99127F rev.2
Note that 0x5CA3 is Winbond's ID (WEC), which let us think Asus get their
AS99127F rev.2 direct from Winbond. The other codes mean ATT and DVC,
respectively. ATT could stand for Asustek something (although it would be
very badly chosen IMHO), I don't know what DVC could stand for. Maybe
these codes simply aren't meant to be decoded that way.
Mozart-2:
- I2C address: 0x77
- If register 0x58 holds 0x56 or 0x10 then we have a Mozart-2
- Of the Mozart there are 3 types:
0x58=0x56, 0x4E=0x94, 0x4F=0x36: Asus ASM58 Mozart-2
0x58=0x56, 0x4E=0x94, 0x4F=0x06: Asus AS2K129R Mozart-2
0x58=0x10, 0x4E=0x5C, 0x4F=0xA3: Asus ??? Mozart-2
You can handle all 3 the exact same way :)
# Temperature sensors:
ASB100:
- sensor 1: register 0x27
- sensor 2 & 3 are the 2 LM75's on the SMBus
- sensor 4: register 0x17
Remark: I noticed that on Intel boards sensor 2 is used for the CPU
and 4 is ignored/stuck, on AMD boards sensor 4 is the CPU and sensor 2 is
either ignored or a socket temperature.
AS99127F (rev.1 and 2 alike):
- sensor 1: register 0x27
- sensor 2 & 3 are the 2 LM75's on the SMBus
Remark: Register 0x5b is suspected to be temperature type selector. Bit 1
would control temp1, bit 3 temp2 and bit 5 temp3.
Mozart-2:
- sensor 1: register 0x27
- sensor 2: register 0x13
# Fan sensors:
ASB100, AS99127F (rev.1 and 2 alike):
- 3 fans, identical to the W83781D
Mozart-2:
- 2 fans only, 1350000/RPM/div
- fan 1: register 0x28, divisor on register 0xA1 (bits 4-5)
- fan 2: register 0x29, divisor on register 0xA1 (bits 6-7)
# Voltages:
This is where there is a difference between AS99127F rev.1 and 2.
Remark: The difference is similar to the difference between
W83781D and W83782D.
ASB100:
in0=r(0x20)*0.016
in1=r(0x21)*0.016
in2=r(0x22)*0.016
in3=r(0x23)*0.016*1.68
in4=r(0x24)*0.016*3.8
in5=r(0x25)*(-0.016)*3.97
in6=r(0x26)*(-0.016)*1.666
AS99127F rev.1:
in0=r(0x20)*0.016
in1=r(0x21)*0.016
in2=r(0x22)*0.016
in3=r(0x23)*0.016*1.68
in4=r(0x24)*0.016*3.8
in5=r(0x25)*(-0.016)*3.97
in6=r(0x26)*(-0.016)*1.503
AS99127F rev.2:
in0=r(0x20)*0.016
in1=r(0x21)*0.016
in2=r(0x22)*0.016
in3=r(0x23)*0.016*1.68
in4=r(0x24)*0.016*3.8
in5=(r(0x25)*0.016-3.6)*5.14+3.6
in6=(r(0x26)*0.016-3.6)*3.14+3.6
Mozart-2:
in0=r(0x20)*0.016
in1=255
in2=r(0x22)*0.016
in3=r(0x23)*0.016*1.68
in4=r(0x24)*0.016*4
in5=255
in6=255
# PWM
Additional info about PWM on the AS99127F (may apply to other Asus
chips as well) by Jean Delvare as of 2004-04-09:
AS99127F revision 2 seems to have two PWM registers at 0x59 and 0x5A,
and a temperature sensor type selector at 0x5B (which basically means
that they swapped registers 0x59 and 0x5B when you compare with Winbond
chips).
Revision 1 of the chip also has the temperature sensor type selector at
0x5B, but PWM registers have no effect.
We don't know exactly how the temperature sensor type selection works.
Looks like bits 1-0 are for temp1, bits 3-2 for temp2 and bits 5-4 for
temp3, although it is possible that only the most significant bit matters
each time. So far, values other than 0 always broke the readings.
PWM registers seem to be split in two parts: bit 7 is a mode selector,
while the other bits seem to define a value or threshold.
When bit 7 is clear, bits 6-0 seem to hold a threshold value. If the value
is below a given limit, the fan runs at low speed. If the value is above
the limit, the fan runs at full speed. We have no clue as to what the limit
represents. Note that there seem to be some inertia in this mode, speed
changes may need some time to trigger. Also, an hysteresis mechanism is
suspected since walking through all the values increasingly and then
decreasingly led to slightly different limits.
When bit 7 is set, bits 3-0 seem to hold a threshold value, while bits 6-4
would not be significant. If the value is below a given limit, the fan runs
at full speed, while if it is above the limit it runs at low speed (so this
is the contrary of the other mode, in a way). Here again, we don't know
what the limit is supposed to represent.
One remarkable thing is that the fans would only have two or three
different speeds (transitional states left apart), not a whole range as
you usually get with PWM.
As a conclusion, you can write 0x00 or 0x8F to the PWM registers to make
fans run at low speed, and 0x7F or 0x80 to make them run at full speed.
Please contact us if you can figure out how it is supposed to work. As
long as we don't know more, the w83781d driver doesn't handle PWM on
AS99127F chips at all.
Additional info about PWM on the AS99127F rev.1 by Hector Martin:
I've been fiddling around with the (in)famous 0x59 register and
found out the following values do work as a form of coarse pwm:
0x80 - seems to turn fans off after some time(1-2 minutes)... might be
some form of auto-fan-control based on temp? hmm (Qfan? this mobo is an
old ASUS, it isn't marketed as Qfan. Maybe some beta pre-attemp at Qfan
that was dropped at the BIOS)
0x81 - off
0x82 - slightly "on-ner" than off, but my fans do not get to move. I can
hear the high-pitched PWM sound that motors give off at too-low-pwm.
0x83 - now they do move. Estimate about 70% speed or so.
0x84-0x8f - full on
Changing the high nibble doesn't seem to do much except the high bit
(0x80) must be set for PWM to work, else the current pwm doesn't seem to
change.
My mobo is an ASUS A7V266-E. This behavior is similar to what I got
with speedfan under Windows, where 0-15% would be off, 15-2x% (can't
remember the exact value) would be 70% and higher would be full on.

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Kernel driver w83l785ts
=======================
Supported chips:
* Winbond W83L785TS-S
Prefix: 'w83l785ts'
Addresses scanned: I2C 0x2e
Datasheet: Publicly available at the Winbond USA website
http://www.winbond-usa.com/products/winbond_products/pdfs/PCIC/W83L785TS-S.pdf
Authors:
Jean Delvare <khali@linux-fr.org>
Description
-----------
The W83L785TS-S is a digital temperature sensor. It senses the
temperature of a single external diode. The high limit is
theoretically defined as 85 or 100 degrees C through a combination
of external resistors, so the user cannot change it. Values seen so
far suggest that the two possible limits are actually 95 and 110
degrees C. The datasheet is rather poor and obviously inaccurate
on several points including this one.
All temperature values are given in degrees Celsius. Resolution
is 1.0 degree. See the datasheet for details.
The w83l785ts driver will not update its values more frequently than
every other second; reading them more often will do no harm, but will
return 'old' values.
Known Issues
------------
On some systems (Asus), the BIOS is known to interfere with the driver
and cause read errors. The driver will retry a given number of times
(5 by default) and then give up, returning the old value (or 0 if
there is no old value). It seems to work well enough so that you should
not notice anything. Thanks to James Bolt for helping test this feature.

2
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@ -57,7 +57,7 @@ Technical changes:
Documentation/i2c/sysfs-interface for the individual files. Also
convert the units these files read and write to the specified ones.
If you need to add a new type of file, please discuss it on the
sensors mailing list <sensors@stimpy.netroedge.com> by providing a
sensors mailing list <lm-sensors@lm-sensors.org> by providing a
patch to the Documentation/i2c/sysfs-interface file.
* [Attach] For I2C drivers, the attach function should make sure

39
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Introduction
------------
Most mainboards have sensor chips to monitor system health (like temperatures,
voltages, fans speed). They are often connected through an I2C bus, but some
are also connected directly through the ISA bus.
The kernel drivers make the data from the sensor chips available in the /sys
virtual filesystem. Userspace tools are then used to display or set or the
data in a more friendly manner.
Lm-sensors
----------
Core set of utilites that will allow you to obtain health information,
setup monitoring limits etc. You can get them on their homepage
http://www.lm-sensors.nu/ or as a package from your Linux distribution.
If from website:
Get lmsensors from project web site. Please note, you need only userspace
part, so compile with "make user_install" target.
General hints to get things working:
0) get lm-sensors userspace utils
1) compile all drivers in I2C section as modules in your kernel
2) run sensors-detect script, it will tell you what modules you need to load.
3) load them and run "sensors" command, you should see some results.
4) fix sensors.conf, labels, limits, fan divisors
5) if any more problems consult FAQ, or documentation
Other utilites
--------------
If you want some graphical indicators of system health look for applications
like: gkrellm, ksensors, xsensors, wmtemp, wmsensors, wmgtemp, ksysguardd,
hardware-monitor
If you are server administrator you can try snmpd or mrtgutils.

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@ -171,45 +171,31 @@ The following lists are used internally:
normal_i2c: filled in by the module writer.
A list of I2C addresses which should normally be examined.
normal_i2c_range: filled in by the module writer.
A list of pairs of I2C addresses, each pair being an inclusive range of
addresses which should normally be examined.
probe: insmod parameter.
A list of pairs. The first value is a bus number (-1 for any I2C bus),
the second is the address. These addresses are also probed, as if they
were in the 'normal' list.
probe_range: insmod parameter.
A list of triples. The first value is a bus number (-1 for any I2C bus),
the second and third are addresses. These form an inclusive range of
addresses that are also probed, as if they were in the 'normal' list.
ignore: insmod parameter.
A list of pairs. The first value is a bus number (-1 for any I2C bus),
the second is the I2C address. These addresses are never probed.
This parameter overrules 'normal' and 'probe', but not the 'force' lists.
ignore_range: insmod parameter.
A list of triples. The first value is a bus number (-1 for any I2C bus),
the second and third are addresses. These form an inclusive range of
I2C addresses that are never probed.
This parameter overrules 'normal' and 'probe', but not the 'force' lists.
force: insmod parameter.
A list of pairs. The first value is a bus number (-1 for any I2C bus),
the second is the I2C address. A device is blindly assumed to be on
the given address, no probing is done.
Fortunately, as a module writer, you just have to define the `normal'
and/or `normal_range' parameters. The complete declaration could look
like this:
Fortunately, as a module writer, you just have to define the `normal_i2c'
parameter. The complete declaration could look like this:
/* Scan 0x20 to 0x2f, 0x37, and 0x40 to 0x4f */
static unsigned short normal_i2c[] = { 0x37,I2C_CLIENT_END };
static unsigned short normal_i2c_range[] = { 0x20, 0x2f, 0x40, 0x4f,
I2C_CLIENT_END };
/* Scan 0x37, and 0x48 to 0x4f */
static unsigned short normal_i2c[] = { 0x37, 0x48, 0x49, 0x4a, 0x4b, 0x4c,
0x4d, 0x4e, 0x4f, I2C_CLIENT_END };
/* Magic definition of all other variables and things */
I2C_CLIENT_INSMOD;
Note that you *have* to call the two defined variables `normal_i2c' and
`normal_i2c_range', without any prefix!
Note that you *have* to call the defined variable `normal_i2c',
without any prefix!
Probing classes (sensors)
@ -223,39 +209,17 @@ The following lists are used internally. They are all lists of integers.
normal_i2c: filled in by the module writer. Terminated by SENSORS_I2C_END.
A list of I2C addresses which should normally be examined.
normal_i2c_range: filled in by the module writer. Terminated by
SENSORS_I2C_END
A list of pairs of I2C addresses, each pair being an inclusive range of
addresses which should normally be examined.
normal_isa: filled in by the module writer. Terminated by SENSORS_ISA_END.
A list of ISA addresses which should normally be examined.
normal_isa_range: filled in by the module writer. Terminated by
SENSORS_ISA_END
A list of triples. The first two elements are ISA addresses, being an
range of addresses which should normally be examined. The third is the
modulo parameter: only addresses which are 0 module this value relative
to the first address of the range are actually considered.
probe: insmod parameter. Initialize this list with SENSORS_I2C_END values.
A list of pairs. The first value is a bus number (SENSORS_ISA_BUS for
the ISA bus, -1 for any I2C bus), the second is the address. These
addresses are also probed, as if they were in the 'normal' list.
probe_range: insmod parameter. Initialize this list with SENSORS_I2C_END
values.
A list of triples. The first value is a bus number (SENSORS_ISA_BUS for
the ISA bus, -1 for any I2C bus), the second and third are addresses.
These form an inclusive range of addresses that are also probed, as
if they were in the 'normal' list.
ignore: insmod parameter. Initialize this list with SENSORS_I2C_END values.
A list of pairs. The first value is a bus number (SENSORS_ISA_BUS for
the ISA bus, -1 for any I2C bus), the second is the I2C address. These
addresses are never probed. This parameter overrules 'normal' and
'probe', but not the 'force' lists.
ignore_range: insmod parameter. Initialize this list with SENSORS_I2C_END
values.
A list of triples. The first value is a bus number (SENSORS_ISA_BUS for
the ISA bus, -1 for any I2C bus), the second and third are addresses.
These form an inclusive range of I2C addresses that are never probed.
This parameter overrules 'normal' and 'probe', but not the 'force' lists.
Also used is a list of pointers to sensors_force_data structures:
force_data: insmod parameters. A list, ending with an element of which
@ -269,16 +233,14 @@ Also used is a list of pointers to sensors_force_data structures:
So we have a generic insmod variabled `force', and chip-specific variables
`force_CHIPNAME'.
Fortunately, as a module writer, you just have to define the `normal'
and/or `normal_range' parameters, and define what chip names are used.
Fortunately, as a module writer, you just have to define the `normal_i2c'
and `normal_isa' parameters, and define what chip names are used.
The complete declaration could look like this:
/* Scan i2c addresses 0x20 to 0x2f, 0x37, and 0x40 to 0x4f
static unsigned short normal_i2c[] = {0x37,SENSORS_I2C_END};
static unsigned short normal_i2c_range[] = {0x20,0x2f,0x40,0x4f,
SENSORS_I2C_END};
/* Scan i2c addresses 0x37, and 0x48 to 0x4f */
static unsigned short normal_i2c[] = { 0x37, 0x48, 0x49, 0x4a, 0x4b, 0x4c,
0x4d, 0x4e, 0x4f, I2C_CLIENT_END };
/* Scan ISA address 0x290 */
static unsigned int normal_isa[] = {0x0290,SENSORS_ISA_END};
static unsigned int normal_isa_range[] = {SENSORS_ISA_END};
/* Define chips foo and bar, as well as all module parameters and things */
SENSORS_INSMOD_2(foo,bar);

16
MAINTAINERS
View File

@ -194,7 +194,7 @@ S: Maintained
ADM1025 HARDWARE MONITOR DRIVER
P: Jean Delvare
M: khali@linux-fr.org
L: sensors@stimpy.netroedge.com
L: lm-sensors@lm-sensors.org
S: Maintained
ADT746X FAN DRIVER
@ -242,7 +242,7 @@ S: Maintained
ALI1563 I2C DRIVER
P: Rudolf Marek
M: r.marek@sh.cvut.cz
L: sensors@stimpy.netroedge.com
L: lm-sensors@lm-sensors.org
S: Maintained
ALPHA PORT
@ -1002,7 +1002,7 @@ P: Greg Kroah-Hartman
M: greg@kroah.com
P: Jean Delvare
M: khali@linux-fr.org
L: sensors@stimpy.netroedge.com
L: lm-sensors@lm-sensors.org
W: http://www.lm-sensors.nu/
S: Maintained
@ -1430,13 +1430,13 @@ S: Supported
LM83 HARDWARE MONITOR DRIVER
P: Jean Delvare
M: khali@linux-fr.org
L: sensors@stimpy.netroedge.com
L: lm-sensors@lm-sensors.org
S: Maintained
LM90 HARDWARE MONITOR DRIVER
P: Jean Delvare
M: khali@linux-fr.org
L: sensors@stimpy.netroedge.com
L: lm-sensors@lm-sensors.org
S: Maintained
LOGICAL DISK MANAGER SUPPORT (LDM, Windows 2000/XP Dynamic Disks)
@ -2075,7 +2075,7 @@ S: Maintained
SMSC47M1 HARDWARE MONITOR DRIVER
P: Jean Delvare
M: khali@linux-fr.org
L: sensors@stimpy.netroedge.com
L: lm-sensors@lm-sensors.org
S: Odd Fixes
SMB FILESYSTEM
@ -2614,7 +2614,7 @@ S: Orphan
W1 DALLAS'S 1-WIRE BUS
P: Evgeniy Polyakov
M: johnpol@2ka.mipt.ru
L: sensors@stimpy.netroedge.com
L: lm-sensors@lm-sensors.org
S: Maintained
W83L51xD SD/MMC CARD INTERFACE DRIVER
@ -2627,7 +2627,7 @@ S: Maintained
W83L785TS HARDWARE MONITOR DRIVER
P: Jean Delvare
M: khali@linux-fr.org
L: sensors@stimpy.netroedge.com
L: lm-sensors@lm-sensors.org
S: Odd Fixes
WAN ROUTER & SANGOMA WANPIPE DRIVERS & API (X.25, FRAME RELAY, PPP, CISCO HDLC)

20
arch/ppc/platforms/83xx/mpc834x_sys.c
View File

@ -185,6 +185,26 @@ mpc834x_sys_init_IRQ(void)
ipic_set_default_priority();
}
#if defined(CONFIG_I2C_MPC) && defined(CONFIG_SENSORS_DS1374)
extern ulong ds1374_get_rtc_time(void);
extern int ds1374_set_rtc_time(ulong);
static int __init
mpc834x_rtc_hookup(void)
{
struct timespec tv;
ppc_md.get_rtc_time = ds1374_get_rtc_time;
ppc_md.set_rtc_time = ds1374_set_rtc_time;
tv.tv_nsec = 0;
tv.tv_sec = (ppc_md.get_rtc_time)();
do_settimeofday(&tv);
return 0;
}
late_initcall(mpc834x_rtc_hookup);
#endif
static __inline__ void
mpc834x_sys_set_bat(void)
{

3
drivers/acorn/char/pcf8583.c
View File

@ -26,11 +26,8 @@ static unsigned short normal_addr[] = { 0x50, I2C_CLIENT_END };
static struct i2c_client_address_data addr_data = {
.normal_i2c = normal_addr,
.normal_i2c_range = ignore,
.probe = ignore,
.probe_range = ignore,
.ignore = ignore,
.ignore_range = ignore,
.force = ignore,
};

8
drivers/i2c/algos/i2c-algo-pca.c
View File

@ -49,7 +49,7 @@ static int i2c_debug=0;
/*
* Generate a start condition on the i2c bus.
*
* returns after the start condition has occured
* returns after the start condition has occurred
*/
static void pca_start(struct i2c_algo_pca_data *adap)
{
@ -62,9 +62,9 @@ static void pca_start(struct i2c_algo_pca_data *adap)
}
/*
* Generate a repeated start condition on the i2c bus
* Generate a repeated start condition on the i2c bus
*
* return after the repeated start condition has occured
* return after the repeated start condition has occurred
*/
static void pca_repeated_start(struct i2c_algo_pca_data *adap)
{
@ -82,7 +82,7 @@ static void pca_repeated_start(struct i2c_algo_pca_data *adap)
* returns after the stop condition has been generated
*
* STOPs do not generate an interrupt or set the SI flag, since the
* part returns the the idle state (0xf8). Hence we don't need to
* part returns the idle state (0xf8). Hence we don't need to
* pca_wait here.
*/
static void pca_stop(struct i2c_algo_pca_data *adap)

1
drivers/i2c/algos/i2c-algo-sibyte.c
View File

@ -24,7 +24,6 @@
/* Ported for SiByte SOCs by Broadcom Corporation. */
#include <linux/config.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>

34
drivers/i2c/busses/Kconfig
View File

@ -7,7 +7,7 @@ menu "I2C Hardware Bus support"
config I2C_ALI1535
tristate "ALI 1535"
depends on I2C && PCI && EXPERIMENTAL
depends on I2C && PCI
help
If you say yes to this option, support will be included for the SMB
Host controller on Acer Labs Inc. (ALI) M1535 South Bridges. The SMB
@ -31,7 +31,7 @@ config I2C_ALI1563
config I2C_ALI15X3
tristate "ALI 15x3"
depends on I2C && PCI && EXPERIMENTAL
depends on I2C && PCI
help
If you say yes to this option, support will be included for the
Acer Labs Inc. (ALI) M1514 and M1543 motherboard I2C interfaces.
@ -41,7 +41,7 @@ config I2C_ALI15X3
config I2C_AMD756
tristate "AMD 756/766/768/8111 and nVidia nForce"
depends on I2C && PCI && EXPERIMENTAL
depends on I2C && PCI
help
If you say yes to this option, support will be included for the AMD
756/766/768 mainboard I2C interfaces. The driver also includes
@ -66,7 +66,7 @@ config I2C_AMD756_S4882
config I2C_AMD8111
tristate "AMD 8111"
depends on I2C && PCI && EXPERIMENTAL
depends on I2C && PCI
help
If you say yes to this option, support will be included for the
second (SMBus 2.0) AMD 8111 mainboard I2C interface.
@ -109,7 +109,7 @@ config I2C_HYDRA
config I2C_I801
tristate "Intel 82801 (ICH)"
depends on I2C && PCI && EXPERIMENTAL
depends on I2C && PCI
help
If you say yes to this option, support will be included for the Intel
801 family of mainboard I2C interfaces. Specifically, the following
@ -130,7 +130,7 @@ config I2C_I801
config I2C_I810
tristate "Intel 810/815"
depends on I2C && PCI && EXPERIMENTAL
depends on I2C && PCI
select I2C_ALGOBIT
help
If you say yes to this option, support will be included for the Intel
@ -183,7 +183,7 @@ config I2C_IOP3XX
config I2C_ISA
tristate "ISA Bus support"
depends on I2C && EXPERIMENTAL
depends on I2C
help
If you say yes to this option, support will be included for i2c
interfaces that are on the ISA bus.
@ -248,12 +248,11 @@ config I2C_MPC
will be called i2c-mpc.
config I2C_NFORCE2
tristate "Nvidia Nforce2"
depends on I2C && PCI && EXPERIMENTAL
tristate "Nvidia nForce2, nForce3 and nForce4"
depends on I2C && PCI
help
If you say yes to this option, support will be included for the Nvidia
Nforce2 family of mainboard I2C interfaces.
This driver also supports the nForce3 Pro 150 MCP.
nForce2, nForce3 and nForce4 families of mainboard I2C interfaces.
This driver can also be built as a module. If so, the module
will be called i2c-nforce2.
@ -305,7 +304,7 @@ config I2C_PARPORT_LIGHT
config I2C_PROSAVAGE
tristate "S3/VIA (Pro)Savage"
depends on I2C && PCI && EXPERIMENTAL
depends on I2C && PCI
select I2C_ALGOBIT
help
If you say yes to this option, support will be included for the
@ -388,7 +387,7 @@ config SCx200_ACB
config I2C_SIS5595
tristate "SiS 5595"
depends on I2C && PCI && EXPERIMENTAL
depends on I2C && PCI
help
If you say yes to this option, support will be included for the
SiS5595 SMBus (a subset of I2C) interface.
@ -398,7 +397,7 @@ config I2C_SIS5595
config I2C_SIS630
tristate "SiS 630/730"
depends on I2C && PCI && EXPERIMENTAL
depends on I2C && PCI
help
If you say yes to this option, support will be included for the
SiS630 and SiS730 SMBus (a subset of I2C) interface.
@ -408,7 +407,7 @@ config I2C_SIS630
config I2C_SIS96X
tristate "SiS 96x"
depends on I2C && PCI && EXPERIMENTAL
depends on I2C && PCI
help
If you say yes to this option, support will be included for the SiS
96x SMBus (a subset of I2C) interfaces. Specifically, the following
@ -419,6 +418,7 @@ config I2C_SIS96X
648/961
650/961
735
745
This driver can also be built as a module. If so, the module
will be called i2c-sis96x.
@ -449,7 +449,7 @@ config I2C_VIA
config I2C_VIAPRO
tristate "VIA 82C596/82C686/823x"
depends on I2C && PCI && EXPERIMENTAL
depends on I2C && PCI
help
If you say yes to this option, support will be included for the VIA
82C596/82C686/823x I2C interfaces. Specifically, the following
@ -467,7 +467,7 @@ config I2C_VIAPRO
config I2C_VOODOO3
tristate "Voodoo 3"
depends on I2C && PCI && EXPERIMENTAL
depends on I2C && PCI
select I2C_ALGOBIT
help
If you say yes to this option, support will be included for the

1
drivers/i2c/busses/i2c-ali1535.c
View File

@ -53,7 +53,6 @@
/* Note: we assume there can only be one ALI1535, with one SMBus interface */
#include <linux/config.h>
#include <linux/module.h>
#include <linux/pci.h>
#include <linux/kernel.h>

1
drivers/i2c/busses/i2c-ali15x3.c
View File

@ -60,7 +60,6 @@
/* Note: we assume there can only be one ALI15X3, with one SMBus interface */
#include <linux/config.h>
#include <linux/module.h>
#include <linux/pci.h>
#include <linux/kernel.h>

1
drivers/i2c/busses/i2c-amd756.c
View File

@ -37,7 +37,6 @@
Note: we assume there can only be one device, with one SMBus interface.
*/
#include <linux/config.h>
#include <linux/module.h>
#include <linux/pci.h>
#include <linux/kernel.h>

1
drivers/i2c/busses/i2c-amd8111.c
View File

@ -8,7 +8,6 @@
* the Free Software Foundation version 2.
*/
#include <linux/config.h>
#include <linux/module.h>
#include <linux/pci.h>
#include <linux/kernel.h>

1
drivers/i2c/busses/i2c-au1550.c
View File

@ -27,7 +27,6 @@
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include <linux/config.h>
#include <linux/delay.h>
#include <linux/kernel.h>
#include <linux/module.h>

1
drivers/i2c/busses/i2c-elektor.c
View File

@ -25,7 +25,6 @@
/* Partialy rewriten by Oleg I. Vdovikin for mmapped support of
for Alpha Processor Inc. UP-2000(+) boards */
#include <linux/config.h>
#include <linux/kernel.h>
#include <linux/ioport.h>
#include <linux/module.h>

1
drivers/i2c/busses/i2c-frodo.c
View File

@ -12,7 +12,6 @@
* version 2 as published by the Free Software Foundation.
*/
#include <linux/config.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>

1
drivers/i2c/busses/i2c-i801.c
View File

@ -41,7 +41,6 @@
/* Note: we assume there can only be one I801, with one SMBus interface */
#include <linux/config.h>
#include <linux/module.h>
#include <linux/pci.h>
#include <linux/kernel.h>

1
drivers/i2c/busses/i2c-i810.c
View File

@ -34,7 +34,6 @@
i815 1132
*/
#include <linux/config.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>

2
drivers/i2c/busses/i2c-ibm_iic.c
View File

@ -695,7 +695,7 @@ static int __devinit iic_probe(struct ocp_device *ocp){
dev->irq = iic_force_poll ? -1 : ocp->def->irq;
if (dev->irq >= 0){
/* Disable interrupts until we finish intialization,
/* Disable interrupts until we finish initialization,
assumes level-sensitive IRQ setup...
*/
iic_interrupt_mode(dev, 0);

1
drivers/i2c/busses/i2c-ibm_iic.h
View File

@ -22,7 +22,6 @@
#ifndef __I2C_IBM_IIC_H_
#define __I2C_IBM_IIC_H_
#include <linux/config.h>
#include <linux/i2c.h>
struct iic_regs {

2
drivers/i2c/busses/i2c-iop3xx.c
View File

@ -85,7 +85,7 @@ iop3xx_i2c_enable(struct i2c_algo_iop3xx_data *iop3xx_adap)
u32 cr = IOP3XX_ICR_GCD | IOP3XX_ICR_SCLEN | IOP3XX_ICR_UE;
/*
* Everytime unit enable is asserted, GPOD needs to be cleared
* Every time unit enable is asserted, GPOD needs to be cleared
* on IOP321 to avoid data corruption on the bus.
*/
#ifdef CONFIG_ARCH_IOP321

1
drivers/i2c/busses/i2c-isa.c
View File

@ -24,7 +24,6 @@
the SMBus and the ISA bus very much easier. See lm78.c for an example
of this. */
#include <linux/config.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/kernel.h>

1
drivers/i2c/busses/i2c-ite.c
View File

@ -33,7 +33,6 @@
/* With some changes from Kyösti Mälkki <kmalkki@cc.hut.fi> and even
Frodo Looijaard <frodol@dds.nl> */
#include <linux/config.h>
#include <linux/kernel.h>
#include <linux/ioport.h>
#include <linux/module.h>

5
drivers/i2c/busses/i2c-ixp2000.c
View File

@ -26,11 +26,6 @@
* 'enabled' to drive the GPIOs.
*/
#include <linux/config.h>
#ifdef CONFIG_I2C_DEBUG_BUS
#define DEBUG 1
#endif
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/device.h>

5
drivers/i2c/busses/i2c-ixp4xx.c
View File

@ -26,11 +26,6 @@
* that is passed as the platform_data to this driver.
*/
#include <linux/config.h>
#ifdef CONFIG_I2C_DEBUG_BUS
#define DEBUG 1
#endif
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/device.h>

1
drivers/i2c/busses/i2c-keywest.c
View File

@ -46,7 +46,6 @@
sound driver to be happy
*/
#include <linux/config.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/ioport.h>

18
drivers/i2c/busses/i2c-mpc.c
View File

@ -325,7 +325,7 @@ static int __devinit mpc_i2c_probe(struct ocp_device *ocp)
if (i2c->irq != OCP_IRQ_NA)
{
if ((result = request_irq(ocp->def->irq, mpc_i2c_isr,
0, "i2c-mpc", i2c)) < 0) {
SA_SHIRQ, "i2c-mpc", i2c)) < 0) {
printk(KERN_ERR
"i2c-mpc - failed to attach interrupt\n");
goto fail_irq;
@ -333,6 +333,9 @@ static int __devinit mpc_i2c_probe(struct ocp_device *ocp)
} else
i2c->irq = 0;
mpc_i2c_setclock(i2c);
ocp_set_drvdata(ocp, i2c);
i2c->adap = mpc_ops;
i2c_set_adapdata(&i2c->adap, i2c);
@ -341,8 +344,6 @@ static int __devinit mpc_i2c_probe(struct ocp_device *ocp)
goto fail_add;
}
mpc_i2c_setclock(i2c);
ocp_set_drvdata(ocp, i2c);
return result;
fail_add:
@ -358,8 +359,8 @@ static int __devinit mpc_i2c_probe(struct ocp_device *ocp)
static void __devexit mpc_i2c_remove(struct ocp_device *ocp)
{
struct mpc_i2c *i2c = ocp_get_drvdata(ocp);
ocp_set_drvdata(ocp, NULL);
i2c_del_adapter(&i2c->adap);
ocp_set_drvdata(ocp, NULL);
if (ocp->def->irq != OCP_IRQ_NA)
free_irq(i2c->irq, i2c);
@ -424,12 +425,15 @@ static int fsl_i2c_probe(struct device *device)
if (i2c->irq != 0)
if ((result = request_irq(i2c->irq, mpc_i2c_isr,
0, "fsl-i2c", i2c)) < 0) {
SA_SHIRQ, "i2c-mpc", i2c)) < 0) {
printk(KERN_ERR
"i2c-mpc - failed to attach interrupt\n");
goto fail_irq;
}
mpc_i2c_setclock(i2c);
dev_set_drvdata(device, i2c);
i2c->adap = mpc_ops;
i2c_set_adapdata(&i2c->adap, i2c);
i2c->adap.dev.parent = &pdev->dev;
@ -438,8 +442,6 @@ static int fsl_i2c_probe(struct device *device)
goto fail_add;
}
mpc_i2c_setclock(i2c);
dev_set_drvdata(device, i2c);
return result;
fail_add:
@ -456,8 +458,8 @@ static int fsl_i2c_remove(struct device *device)
{
struct mpc_i2c *i2c = dev_get_drvdata(device);
dev_set_drvdata(device, NULL);
i2c_del_adapter(&i2c->adap);
dev_set_drvdata(device, NULL);
if (i2c->irq != 0)
free_irq(i2c->irq, i2c);

1
drivers/i2c/busses/i2c-nforce2.c
View File

@ -37,7 +37,6 @@
/* Note: we assume there can only be one nForce2, with two SMBus interfaces */
#include <linux/config.h>
#include <linux/module.h>
#include <linux/pci.h>
#include <linux/kernel.h>

1
drivers/i2c/busses/i2c-parport-light.c
View File

@ -24,7 +24,6 @@
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
* ------------------------------------------------------------------------ */
#include <linux/config.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>

3
drivers/i2c/busses/i2c-parport.c
View File

@ -24,7 +24,6 @@
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
* ------------------------------------------------------------------------ */
#include <linux/config.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
@ -131,7 +130,7 @@ static int parport_getsda(void *data)
/* Encapsulate the functions above in the correct structure.
Note that this is only a template, from which the real structures are
copied. The attaching code will set getscl to NULL for adapters that
cannot read SCL back, and will also make the the data field point to
cannot read SCL back, and will also make the data field point to
the parallel port structure. */
static struct i2c_algo_bit_data parport_algo_data = {
.setsda = parport_setsda,

1
drivers/i2c/busses/i2c-pca-isa.c
View File

@ -17,7 +17,6 @@
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <linux/config.h>
#include <linux/kernel.h>
#include <linux/ioport.h>
#include <linux/module.h>

1
drivers/i2c/busses/i2c-piix4.c
View File

@ -28,7 +28,6 @@
Note: we assume there can only be one device, with one SMBus interface.
*/
#include <linux/config.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/pci.h>

1
drivers/i2c/busses/i2c-prosavage.c
View File

@ -54,7 +54,6 @@
* (Additional documentation needed :(
*/
#include <linux/config.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/pci.h>

1
drivers/i2c/busses/i2c-rpx.c
View File

@ -11,7 +11,6 @@
* changed to eliminate RPXLite references.
*/
#include <linux/config.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>

3
drivers/i2c/busses/i2c-s3c2410.c
View File

@ -20,6 +20,7 @@
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <linux/config.h>
#include <linux/kernel.h>
#include <linux/module.h>
@ -533,7 +534,7 @@ static int s3c24xx_i2c_doxfer(struct s3c24xx_i2c *i2c, struct i2c_msg *msgs, int
/* s3c24xx_i2c_xfer
*
* first port of call from the i2c bus code when an message needs
* transfering across the i2c bus.
* transferring across the i2c bus.
*/
static int s3c24xx_i2c_xfer(struct i2c_adapter *adap,

1
drivers/i2c/busses/i2c-savage4.c
View File

@ -29,7 +29,6 @@
it easier to add later.
*/
#include <linux/config.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>

1
drivers/i2c/busses/i2c-sibyte.c
View File

@ -17,7 +17,6 @@
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include <linux/config.h>
#include <linux/module.h>
#include <linux/i2c-algo-sibyte.h>
#include <asm/sibyte/sb1250_regs.h>

1
drivers/i2c/busses/i2c-sis5595.c
View File

@ -55,7 +55,6 @@
* Add adapter resets
*/
#include <linux/config.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/delay.h>

1
drivers/i2c/busses/i2c-sis630.c
View File

@ -48,7 +48,6 @@
Note: we assume there can only be one device, with one SMBus interface.
*/
#include <linux/config.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/delay.h>

1
drivers/i2c/busses/i2c-sis96x.c
View File

@ -32,7 +32,6 @@
We assume there can only be one SiS96x with one SMBus interface.
*/
#include <linux/config.h>
#include <linux/module.h>
#include <linux/pci.h>
#include <linux/kernel.h>

1
drivers/i2c/busses/i2c-stub.c
View File

@ -21,7 +21,6 @@
#define DEBUG 1
#include <linux/config.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/kernel.h>

1
drivers/i2c/busses/i2c-via.c
View File

@ -21,7 +21,6 @@
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <linux/config.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/pci.h>

1
drivers/i2c/busses/i2c-viapro.c
View File

@ -33,7 +33,6 @@
Note: we assume there can only be one device, with one SMBus interface.
*/
#include <linux/config.h>
#include <linux/module.h>
#include <linux/delay.h>
#include <linux/pci.h>

1
drivers/i2c/busses/i2c-voodoo3.c
View File

@ -27,7 +27,6 @@
/* This interfaces to the I2C bus of the Voodoo3 to gain access to
the BT869 and possibly other I2C devices. */
#include <linux/config.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>

1
drivers/i2c/busses/scx200_acb.c
View File

@ -24,7 +24,6 @@
*/
#include <linux/config.h>
#include <linux/module.h>
#include <linux/errno.h>
#include <linux/kernel.h>

117
drivers/i2c/chips/Kconfig
View File

@ -1,5 +1,5 @@
#
# I2C Sensor device configuration
# I2C Sensor and "other" chip configuration
#
menu "Hardware Sensors Chip support"
@ -11,7 +11,7 @@ config I2C_SENSOR
config SENSORS_ADM1021
tristate "Analog Devices ADM1021 and compatibles"
depends on I2C && EXPERIMENTAL
depends on I2C
select I2C_SENSOR
help
If you say yes here you get support for Analog Devices ADM1021
@ -29,6 +29,7 @@ config SENSORS_ADM1025
help
If you say yes here you get support for Analog Devices ADM1025
and Philips NE1619 sensor chips.
This driver can also be built as a module. If so, the module
will be called adm1025.
@ -38,6 +39,8 @@ config SENSORS_ADM1026
select I2C_SENSOR
help
If you say yes here you get support for Analog Devices ADM1026
sensor chip.
This driver can also be built as a module. If so, the module
will be called adm1026.
@ -48,9 +51,21 @@ config SENSORS_ADM1031
help
If you say yes here you get support for Analog Devices ADM1031
and ADM1030 sensor chips.
This driver can also be built as a module. If so, the module
will be called adm1031.
config SENSORS_ADM9240
tristate "Analog Devices ADM9240 and compatibles"
depends on I2C && EXPERIMENTAL
select I2C_SENSOR
help
If you say yes here you get support for Analog Devices ADM9240,
Dallas DS1780, National Semiconductor LM81 sensor chips.
This driver can also be built as a module. If so, the module
will be called adm9240.
config SENSORS_ASB100
tristate "Asus ASB100 Bach"
depends on I2C && EXPERIMENTAL
@ -62,6 +77,19 @@ config SENSORS_ASB100
This driver can also be built as a module. If so, the module
will be called asb100.
config SENSORS_ATXP1
tristate "Attansic ATXP1 VID controller"
depends on I2C && EXPERIMENTAL
help
If you say yes here you get support for the Attansic ATXP1 VID
controller.
If your board have such a chip, you are able to control your CPU
core and other voltages.
This driver can also be built as a module. If so, the module
will be called atxp1.
config SENSORS_DS1621
tristate "Dallas Semiconductor DS1621 and DS1625"
depends on I2C && EXPERIMENTAL
@ -97,7 +125,7 @@ config SENSORS_FSCPOS
config SENSORS_GL518SM
tristate "Genesys Logic GL518SM"
depends on I2C && EXPERIMENTAL
depends on I2C
select I2C_SENSOR
help
If you say yes here you get support for Genesys Logic GL518SM
@ -119,7 +147,7 @@ config SENSORS_GL520SM
config SENSORS_IT87
tristate "ITE IT87xx and compatibles"
depends on I2C && EXPERIMENTAL
depends on I2C
select I2C_SENSOR
help
If you say yes here you get support for ITE IT87xx sensor chips
@ -143,7 +171,7 @@ config SENSORS_LM63
config SENSORS_LM75
tristate "National Semiconductor LM75 and compatibles"
depends on I2C && EXPERIMENTAL
depends on I2C
select I2C_SENSOR
help
If you say yes here you get support for National Semiconductor LM75
@ -174,8 +202,7 @@ config SENSORS_LM78
select I2C_SENSOR
help
If you say yes here you get support for National Semiconductor LM78,
LM78-J and LM79. This can also be built as a module which can be
inserted and removed while the kernel is running.
LM78-J and LM79.
This driver can also be built as a module. If so, the module
will be called lm78.
@ -208,7 +235,7 @@ config SENSORS_LM85
select I2C_SENSOR
help
If you say yes here you get support for National Semiconductor LM85
sensor chips and clones: ADT7463 and ADM1027.
sensor chips and clones: ADT7463, EMC6D100, EMC6D102 and ADM1027.
This driver can also be built as a module. If so, the module
will be called lm85.
@ -307,14 +334,14 @@ config SENSORS_SMSC47M1
help
If you say yes here you get support for the integrated fan
monitoring and control capabilities of the SMSC LPC47B27x,
LPC47M10x, LPC47M13x and LPC47M14x chips.
LPC47M10x, LPC47M13x, LPC47M14x, LPC47M15x and LPC47M192 chips.
This driver can also be built as a module. If so, the module
will be called smsc47m1.
config SENSORS_VIA686A
tristate "VIA686A"
depends on I2C && PCI && EXPERIMENTAL
depends on I2C && PCI
select I2C_SENSOR
select I2C_ISA
help
@ -326,7 +353,7 @@ config SENSORS_VIA686A
config SENSORS_W83781D
tristate "Winbond W83781D, W83782D, W83783S, W83627HF, Asus AS99127F"
depends on I2C && EXPERIMENTAL
depends on I2C
select I2C_SENSOR
help
If you say yes here you get support for the Winbond W8378x series
@ -360,22 +387,47 @@ config SENSORS_W83627HF
This driver can also be built as a module. If so, the module
will be called w83627hf.
config SENSORS_W83627EHF
tristate "Winbond W83627EHF"
depends on I2C && EXPERIMENTAL
select I2C_SENSOR
select I2C_ISA
help
If you say yes here you get preliminary support for the hardware
monitoring functionality of the Winbond W83627EHF Super-I/O chip.
Only fan and temperature inputs are supported at the moment, while
the chip does much more than that.
This driver can also be built as a module. If so, the module
will be called w83627ehf.
endmenu
menu "Other I2C Chip support"
depends on I2C
config SENSORS_DS1337
tristate "Dallas Semiconductor DS1337 Real Time Clock"
tristate "Dallas Semiconductor DS1337 and DS1339 Real Time Clock"
depends on I2C && EXPERIMENTAL
select I2C_SENSOR
help
If you say yes here you get support for Dallas Semiconductor
DS1337 real-time clock chips.
DS1337 and DS1339 real-time clock chips.
This driver can also be built as a module. If so, the module
will be called ds1337.
config SENSORS_DS1374
tristate "Maxim/Dallas Semiconductor DS1374 Real Time Clock"
depends on I2C && EXPERIMENTAL
select I2C_SENSOR
help
If you say yes here you get support for Dallas Semiconductor
DS1374 real-time clock chips.
This driver can also be built as a module. If so, the module
will be called ds1374.
config SENSORS_EEPROM
tristate "EEPROM reader"
depends on I2C && EXPERIMENTAL
@ -399,6 +451,16 @@ config SENSORS_PCF8574
This driver can also be built as a module. If so, the module
will be called pcf8574.
config SENSORS_PCA9539
tristate "Philips PCA9539 16-bit I/O port"
depends on I2C && EXPERIMENTAL
help
If you say yes here you get support for the Philips PCA9539
16-bit I/O port.
This driver can also be built as a module. If so, the module
will be called pca9539.
config SENSORS_PCF8591
tristate "Philips PCF8591"
depends on I2C && EXPERIMENTAL
@ -431,6 +493,23 @@ config ISP1301_OMAP
This driver can also be built as a module. If so, the module
will be called isp1301_omap.
# NOTE: This isn't really OMAP-specific, except for the current
# interface location in <include/asm-arm/arch-omap/tps65010.h>
# and having mostly OMAP-specific board support
config TPS65010
tristate "TPS6501x Power Management chips"
depends on I2C && ARCH_OMAP
default y if MACH_OMAP_H2 || MACH_OMAP_H3 || MACH_OMAP_OSK
help
If you say yes here you get support for the TPS6501x series of
Power Management chips. These include voltage regulators,
lithium ion/polymer battery charging, and other features that
are often used in portable devices like cell phones and cameras.
This driver can also be built as a module. If so, the module
will be called tps65010.
config SENSORS_M41T00
tristate "ST M41T00 RTC chip"
depends on I2C && PPC32
@ -440,4 +519,16 @@ config SENSORS_M41T00
This driver can also be built as a module. If so, the module
will be called m41t00.
config SENSORS_MAX6875
tristate "MAXIM MAX6875 Power supply supervisor"
depends on I2C && EXPERIMENTAL
help
If you say yes here you get support for the MAX6875
EEPROM-Programmable, Hex/Quad, Power-Suppy Sequencers/Supervisors.
This provides a interface to program the EEPROM and reset the chip.
This driver can also be built as a module. If so, the module
will be called max6875.
endmenu

10
drivers/i2c/chips/Makefile
View File

@ -1,5 +1,5 @@
#
# Makefile for the kernel hardware sensors chip drivers.
# Makefile for sensor and "other" I2C chip drivers.
#
# asb100, then w83781d go first, as they can override other drivers' addresses.
@ -11,7 +11,10 @@ obj-$(CONFIG_SENSORS_ADM1021) += adm1021.o
obj-$(CONFIG_SENSORS_ADM1025) += adm1025.o
obj-$(CONFIG_SENSORS_ADM1026) += adm1026.o
obj-$(CONFIG_SENSORS_ADM1031) += adm1031.o
obj-$(CONFIG_SENSORS_ADM9240) += adm9240.o
obj-$(CONFIG_SENSORS_ATXP1) += atxp1.o
obj-$(CONFIG_SENSORS_DS1337) += ds1337.o
obj-$(CONFIG_SENSORS_DS1374) += ds1374.o
obj-$(CONFIG_SENSORS_DS1621) += ds1621.o
obj-$(CONFIG_SENSORS_EEPROM) += eeprom.o
obj-$(CONFIG_SENSORS_FSCHER) += fscher.o
@ -30,8 +33,10 @@ obj-$(CONFIG_SENSORS_LM87) += lm87.o
obj-$(CONFIG_SENSORS_LM90) += lm90.o
obj-$(CONFIG_SENSORS_LM92) += lm92.o
obj-$(CONFIG_SENSORS_MAX1619) += max1619.o
obj-$(CONFIG_SENSORS_MAX6875) += max6875.o
obj-$(CONFIG_SENSORS_M41T00) += m41t00.o
obj-$(CONFIG_SENSORS_PC87360) += pc87360.o
obj-$(CONFIG_SENSORS_PCA9539) += pca9539.o
obj-$(CONFIG_SENSORS_PCF8574) += pcf8574.o
obj-$(CONFIG_SENSORS_PCF8591) += pcf8591.o
obj-$(CONFIG_SENSORS_RTC8564) += rtc8564.o
@ -39,8 +44,11 @@ obj-$(CONFIG_SENSORS_SIS5595) += sis5595.o
obj-$(CONFIG_SENSORS_SMSC47B397)+= smsc47b397.o
obj-$(CONFIG_SENSORS_SMSC47M1) += smsc47m1.o
obj-$(CONFIG_SENSORS_VIA686A) += via686a.o
obj-$(CONFIG_SENSORS_W83627EHF) += w83627ehf.o
obj-$(CONFIG_SENSORS_W83L785TS) += w83l785ts.o
obj-$(CONFIG_ISP1301_OMAP) += isp1301_omap.o
obj-$(CONFIG_TPS65010) += tps65010.o
ifeq ($(CONFIG_I2C_DEBUG_CHIP),y)
EXTRA_CFLAGS += -DDEBUG

9
drivers/i2c/chips/adm1021.c
View File

@ -19,7 +19,6 @@
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <linux/config.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/slab.h>
@ -103,8 +102,6 @@ struct adm1021_data {
u8 remote_temp_hyst;
u8 remote_temp_input;
u8 alarms;
/* special values for ADM1021 only */
u8 die_code;
/* Special values for ADM1023 only */
u8 remote_temp_prec;
u8 remote_temp_os_prec;
@ -156,7 +153,6 @@ static ssize_t show_##value(struct device *dev, struct device_attribute *attr, c
return sprintf(buf, "%d\n", data->value); \
}
show2(alarms);
show2(die_code);
#define set(value, reg) \
static ssize_t set_##value(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) \
@ -183,7 +179,6 @@ static DEVICE_ATTR(temp2_max, S_IWUSR | S_IRUGO, show_remote_temp_max, set_remot
static DEVICE_ATTR(temp2_min, S_IWUSR | S_IRUGO, show_remote_temp_hyst, set_remote_temp_hyst);
static DEVICE_ATTR(temp2_input, S_IRUGO, show_remote_temp_input, NULL);
static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL);
static DEVICE_ATTR(die_code, S_IRUGO, show_die_code, NULL);
static int adm1021_attach_adapter(struct i2c_adapter *adapter)
@ -307,8 +302,6 @@ static int adm1021_detect(struct i2c_adapter *adapter, int address, int kind)
device_create_file(&new_client->dev, &dev_attr_temp2_min);
device_create_file(&new_client->dev, &dev_attr_temp2_input);
device_create_file(&new_client->dev, &dev_attr_alarms);
if (data->type == adm1021)
device_create_file(&new_client->dev, &dev_attr_die_code);
return 0;
@ -371,8 +364,6 @@ static struct adm1021_data *adm1021_update_device(struct device *dev)
data->remote_temp_max = adm1021_read_value(client, ADM1021_REG_REMOTE_TOS_R);
data->remote_temp_hyst = adm1021_read_value(client, ADM1021_REG_REMOTE_THYST_R);
data->alarms = adm1021_read_value(client, ADM1021_REG_STATUS) & 0x7c;
if (data->type == adm1021)
data->die_code = adm1021_read_value(client, ADM1021_REG_DIE_CODE);
if (data->type == adm1023) {
data->remote_temp_prec = adm1021_read_value(client, ADM1021_REG_REM_TEMP_PREC);
data->remote_temp_os_prec = adm1021_read_value(client, ADM1021_REG_REM_TOS_PREC);

5
drivers/i2c/chips/adm1025.c
View File

@ -45,7 +45,6 @@
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <linux/config.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/slab.h>
@ -287,7 +286,9 @@ static ssize_t show_vid(struct device *dev, struct device_attribute *attr, char
struct adm1025_data *data = adm1025_update_device(dev);
return sprintf(buf, "%u\n", vid_from_reg(data->vid, data->vrm));
}
/* in1_ref is deprecated in favour of cpu0_vid, remove after 2005-11-11 */
static DEVICE_ATTR(in1_ref, S_IRUGO, show_vid, NULL);
static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid, NULL);
static ssize_t show_vrm(struct device *dev, struct device_attribute *attr, char *buf)
{
@ -437,7 +438,9 @@ static int adm1025_detect(struct i2c_adapter *adapter, int address, int kind)
device_create_file(&new_client->dev, &dev_attr_temp1_max);
device_create_file(&new_client->dev, &dev_attr_temp2_max);
device_create_file(&new_client->dev, &dev_attr_alarms);
/* in1_ref is deprecated, remove after 2005-11-11 */
device_create_file(&new_client->dev, &dev_attr_in1_ref);
device_create_file(&new_client->dev, &dev_attr_cpu0_vid);
device_create_file(&new_client->dev, &dev_attr_vrm);
/* Pin 11 is either in4 (+12V) or VID4 */

8
drivers/i2c/chips/adm1026.c
View File

@ -23,15 +23,14 @@
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <linux/config.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/jiffies.h>
#include <linux/i2c.h>
#include <linux/i2c-sensor.h>
#include <linux/i2c-sysfs.h>
#include <linux/i2c-vid.h>
#include <linux/hwmon-sysfs.h>
/* Addresses to scan */
static unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END };
@ -1225,8 +1224,9 @@ static ssize_t show_vid_reg(struct device *dev, struct device_attribute *attr, c
struct adm1026_data *data = adm1026_update_device(dev);
return sprintf(buf,"%d\n", vid_from_reg(data->vid & 0x3f, data->vrm));
}
/* vid deprecated in favour of cpu0_vid, remove after 2005-11-11 */
static DEVICE_ATTR(vid, S_IRUGO, show_vid_reg, NULL);
static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL);
static ssize_t show_vrm_reg(struct device *dev, struct device_attribute *attr, char *buf)
{
@ -1666,7 +1666,9 @@ int adm1026_detect(struct i2c_adapter *adapter, int address,
device_create_file(&new_client->dev, &dev_attr_temp1_crit_enable);
device_create_file(&new_client->dev, &dev_attr_temp2_crit_enable);
device_create_file(&new_client->dev, &dev_attr_temp3_crit_enable);
/* vid deprecated in favour of cpu0_vid, remove after 2005-11-11 */
device_create_file(&new_client->dev, &dev_attr_vid);
device_create_file(&new_client->dev, &dev_attr_cpu0_vid);
device_create_file(&new_client->dev, &dev_attr_vrm);
device_create_file(&new_client->dev, &dev_attr_alarms);
device_create_file(&new_client->dev, &dev_attr_alarm_mask);

2
drivers/i2c/chips/adm1031.c
View File

@ -440,7 +440,7 @@ pwm_reg(2);
/*
* That function checks the cases where the fan reading is not
* relevent. It is used to provide 0 as fan reading when the fan is
* relevant. It is used to provide 0 as fan reading when the fan is
* not supposed to run
*/
static int trust_fan_readings(struct adm1031_data *data, int chan)

791
drivers/i2c/chips/adm9240.c Normal file
View File

@ -0,0 +1,791 @@
/*
* adm9240.c Part of lm_sensors, Linux kernel modules for hardware
* monitoring
*
* Copyright (C) 1999 Frodo Looijaard <frodol@dds.nl>
* Philip Edelbrock <phil@netroedge.com>
* Copyright (C) 2003 Michiel Rook <michiel@grendelproject.nl>
* Copyright (C) 2005 Grant Coady <gcoady@gmail.com> with valuable
* guidance from Jean Delvare
*
* Driver supports Analog Devices ADM9240
* Dallas Semiconductor DS1780
* National Semiconductor LM81
*
* ADM9240 is the reference, DS1780 and LM81 are register compatibles
*
* Voltage Six inputs are scaled by chip, VID also reported
* Temperature Chip temperature to 0.5'C, maximum and max_hysteris
* Fans 2 fans, low speed alarm, automatic fan clock divider
* Alarms 16-bit map of active alarms
* Analog Out 0..1250 mV output
*
* Chassis Intrusion: clear CI latch with 'echo 1 > chassis_clear'
*
* Test hardware: Intel SE440BX-2 desktop motherboard --Grant
*
* LM81 extended temp reading not implemented
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <linux/init.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/i2c.h>
#include <linux/i2c-sensor.h>
#include <linux/i2c-vid.h>
/* Addresses to scan */
static unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, 0x2f,
I2C_CLIENT_END };
static unsigned int normal_isa[] = { I2C_CLIENT_ISA_END };
/* Insmod parameters */
SENSORS_INSMOD_3(adm9240, ds1780, lm81);
/* ADM9240 registers */
#define ADM9240_REG_MAN_ID 0x3e
#define ADM9240_REG_DIE_REV 0x3f
#define ADM9240_REG_CONFIG 0x40
#define ADM9240_REG_IN(nr) (0x20 + (nr)) /* 0..5 */
#define ADM9240_REG_IN_MAX(nr) (0x2b + (nr) * 2)
#define ADM9240_REG_IN_MIN(nr) (0x2c + (nr) * 2)
#define ADM9240_REG_FAN(nr) (0x28 + (nr)) /* 0..1 */
#define ADM9240_REG_FAN_MIN(nr) (0x3b + (nr))
#define ADM9240_REG_INT(nr) (0x41 + (nr))
#define ADM9240_REG_INT_MASK(nr) (0x43 + (nr))
#define ADM9240_REG_TEMP 0x27
#define ADM9240_REG_TEMP_HIGH 0x39
#define ADM9240_REG_TEMP_HYST 0x3a
#define ADM9240_REG_ANALOG_OUT 0x19
#define ADM9240_REG_CHASSIS_CLEAR 0x46
#define ADM9240_REG_VID_FAN_DIV 0x47
#define ADM9240_REG_I2C_ADDR 0x48
#define ADM9240_REG_VID4 0x49
#define ADM9240_REG_TEMP_CONF 0x4b
/* generalised scaling with integer rounding */
static inline int SCALE(long val, int mul, int div)
{
if (val < 0)
return (val * mul - div / 2) / div;
else
return (val * mul + div / 2) / div;
}
/* adm9240 internally scales voltage measurements */
static const u16 nom_mv[] = { 2500, 2700, 3300, 5000, 12000, 2700 };
static inline unsigned int IN_FROM_REG(u8 reg, int n)
{
return SCALE(reg, nom_mv[n], 192);
}
static inline u8 IN_TO_REG(unsigned long val, int n)
{
return SENSORS_LIMIT(SCALE(val, 192, nom_mv[n]), 0, 255);
}
/* temperature range: -40..125, 127 disables temperature alarm */
static inline s8 TEMP_TO_REG(long val)
{
return SENSORS_LIMIT(SCALE(val, 1, 1000), -40, 127);
}
/* two fans, each with low fan speed limit */
static inline unsigned int FAN_FROM_REG(u8 reg, u8 div)
{
if (!reg) /* error */
return -1;
if (reg == 255)
return 0;
return SCALE(1350000, 1, reg * div);
}
/* analog out 0..1250mV */
static inline u8 AOUT_TO_REG(unsigned long val)
{
return SENSORS_LIMIT(SCALE(val, 255, 1250), 0, 255);
}
static inline unsigned int AOUT_FROM_REG(u8 reg)
{
return SCALE(reg, 1250, 255);
}
static int adm9240_attach_adapter(struct i2c_adapter *adapter);
static int adm9240_detect(struct i2c_adapter *adapter, int address, int kind);
static void adm9240_init_client(struct i2c_client *client);
static int adm9240_detach_client(struct i2c_client *client);
static struct adm9240_data *adm9240_update_device(struct device *dev);
/* driver data */
static struct i2c_driver adm9240_driver = {
.owner = THIS_MODULE,
.name = "adm9240",
.id = I2C_DRIVERID_ADM9240,
.flags = I2C_DF_NOTIFY,
.attach_adapter = adm9240_attach_adapter,
.detach_client = adm9240_detach_client,
};
/* per client data */
struct adm9240_data {
enum chips type;
struct i2c_client client;
struct semaphore update_lock;
char valid;
unsigned long last_updated_measure;
unsigned long last_updated_config;
u8 in[6]; /* ro in0_input */
u8 in_max[6]; /* rw in0_max */
u8 in_min[6]; /* rw in0_min */
u8 fan[2]; /* ro fan1_input */
u8 fan_min[2]; /* rw fan1_min */
u8 fan_div[2]; /* rw fan1_div, read-only accessor */
s16 temp; /* ro temp1_input, 9-bit sign-extended */
s8 temp_high; /* rw temp1_max */
s8 temp_hyst; /* rw temp1_max_hyst */
u16 alarms; /* ro alarms */
u8 aout; /* rw aout_output */
u8 vid; /* ro vid */
u8 vrm; /* -- vrm set on startup, no accessor */
};
/* i2c byte read/write interface */
static int adm9240_read_value(struct i2c_client *client, u8 reg)
{
return i2c_smbus_read_byte_data(client, reg);
}
static int adm9240_write_value(struct i2c_client *client, u8 reg, u8 value)
{
return i2c_smbus_write_byte_data(client, reg, value);
}
/*** sysfs accessors ***/
/* temperature */
#define show_temp(value, scale) \
static ssize_t show_##value(struct device *dev, \
struct device_attribute *attr, \
char *buf) \
{ \
struct adm9240_data *data = adm9240_update_device(dev); \
return sprintf(buf, "%d\n", data->value * scale); \
}
show_temp(temp_high, 1000);
show_temp(temp_hyst, 1000);
show_temp(temp, 500); /* 0.5'C per bit */
#define set_temp(value, reg) \
static ssize_t set_##value(struct device *dev, \
struct device_attribute *attr, \
const char *buf, size_t count) \
{ \
struct i2c_client *client = to_i2c_client(dev); \
struct adm9240_data *data = adm9240_update_device(dev); \
long temp = simple_strtoul(buf, NULL, 10); \
\
down(&data->update_lock); \
data->value = TEMP_TO_REG(temp); \
adm9240_write_value(client, reg, data->value); \
up(&data->update_lock); \
return count; \
}
set_temp(temp_high, ADM9240_REG_TEMP_HIGH);
set_temp(temp_hyst, ADM9240_REG_TEMP_HYST);
static DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO,
show_temp_high, set_temp_high);
static DEVICE_ATTR(temp1_max_hyst, S_IWUSR | S_IRUGO,
show_temp_hyst, set_temp_hyst);
static DEVICE_ATTR(temp1_input, S_IRUGO, show_temp, NULL);
/* voltage */
static ssize_t show_in(struct device *dev, char *buf, int nr)
{
struct adm9240_data *data = adm9240_update_device(dev);
return sprintf(buf, "%d\n", IN_FROM_REG(data->in[nr], nr));
}
static ssize_t show_in_min(struct device *dev, char *buf, int nr)
{
struct adm9240_data *data = adm9240_update_device(dev);
return sprintf(buf, "%d\n", IN_FROM_REG(data->in_min[nr], nr));
}
static ssize_t show_in_max(struct device *dev, char *buf, int nr)
{
struct adm9240_data *data = adm9240_update_device(dev);
return sprintf(buf, "%d\n", IN_FROM_REG(data->in_max[nr], nr));
}
static ssize_t set_in_min(struct device *dev, const char *buf,
size_t count, int nr)
{
struct i2c_client *client = to_i2c_client(dev);
struct adm9240_data *data = i2c_get_clientdata(client);
unsigned long val = simple_strtoul(buf, NULL, 10);
down(&data->update_lock);
data->in_min[nr] = IN_TO_REG(val, nr);
adm9240_write_value(client, ADM9240_REG_IN_MIN(nr), data->in_min[nr]);
up(&data->update_lock);
return count;
}
static ssize_t set_in_max(struct device *dev, const char *buf,
size_t count, int nr)
{
struct i2c_client *client = to_i2c_client(dev);
struct adm9240_data *data = i2c_get_clientdata(client);
unsigned long val = simple_strtoul(buf, NULL, 10);
down(&data->update_lock);
data->in_max[nr] = IN_TO_REG(val, nr);
adm9240_write_value(client, ADM9240_REG_IN_MAX(nr), data->in_max[nr]);
up(&data->update_lock);
return count;
}
#define show_in_offset(offset) \
static ssize_t show_in##offset(struct device *dev, \
struct device_attribute *attr, \
char *buf) \
{ \
return show_in(dev, buf, offset); \
} \
static DEVICE_ATTR(in##offset##_input, S_IRUGO, show_in##offset, NULL); \
static ssize_t show_in##offset##_min(struct device *dev, \
struct device_attribute *attr, \
char *buf) \
{ \
return show_in_min(dev, buf, offset); \
} \
static ssize_t show_in##offset##_max(struct device *dev, \
struct device_attribute *attr, \
char *buf) \
{ \
return show_in_max(dev, buf, offset); \
} \
static ssize_t \
set_in##offset##_min(struct device *dev, \
struct device_attribute *attr, const char *buf, \
size_t count) \
{ \
return set_in_min(dev, buf, count, offset); \
} \
static ssize_t \
set_in##offset##_max(struct device *dev, \
struct device_attribute *attr, const char *buf, \
size_t count) \
{ \
return set_in_max(dev, buf, count, offset); \
} \
static DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \
show_in##offset##_min, set_in##offset##_min); \
static DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \
show_in##offset##_max, set_in##offset##_max);
show_in_offset(0);
show_in_offset(1);
show_in_offset(2);
show_in_offset(3);
show_in_offset(4);
show_in_offset(5);
/* fans */
static ssize_t show_fan(struct device *dev, char *buf, int nr)
{
struct adm9240_data *data = adm9240_update_device(dev);
return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[nr],
1 << data->fan_div[nr]));
}
static ssize_t show_fan_min(struct device *dev, char *buf, int nr)
{
struct adm9240_data *data = adm9240_update_device(dev);
return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[nr],
1 << data->fan_div[nr]));
}
static ssize_t show_fan_div(struct device *dev, char *buf, int nr)
{
struct adm9240_data *data = adm9240_update_device(dev);
return sprintf(buf, "%d\n", 1 << data->fan_div[nr]);
}
/* write new fan div, callers must hold data->update_lock */
static void adm9240_write_fan_div(struct i2c_client *client, int nr,
u8 fan_div)
{
u8 reg, old, shift = (nr + 2) * 2;
reg = adm9240_read_value(client, ADM9240_REG_VID_FAN_DIV);
old = (reg >> shift) & 3;
reg &= ~(3 << shift);
reg |= (fan_div << shift);
adm9240_write_value(client, ADM9240_REG_VID_FAN_DIV, reg);
dev_dbg(&client->dev, "fan%d clock divider changed from %u "
"to %u\n", nr + 1, 1 << old, 1 << fan_div);
}
/*
* set fan speed low limit:
*
* - value is zero: disable fan speed low limit alarm
*
* - value is below fan speed measurement range: enable fan speed low
* limit alarm to be asserted while fan speed too slow to measure
*
* - otherwise: select fan clock divider to suit fan speed low limit,
* measurement code may adjust registers to ensure fan speed reading
*/
static ssize_t set_fan_min(struct device *dev, const char *buf,
size_t count, int nr)
{
struct i2c_client *client = to_i2c_client(dev);
struct adm9240_data *data = i2c_get_clientdata(client);
unsigned long val = simple_strtoul(buf, NULL, 10);
u8 new_div;
down(&data->update_lock);
if (!val) {
data->fan_min[nr] = 255;
new_div = data->fan_div[nr];
dev_dbg(&client->dev, "fan%u low limit set disabled\n",
nr + 1);
} else if (val < 1350000 / (8 * 254)) {
new_div = 3;
data->fan_min[nr] = 254;
dev_dbg(&client->dev, "fan%u low limit set minimum %u\n",
nr + 1, FAN_FROM_REG(254, 1 << new_div));
} else {
unsigned int new_min = 1350000 / val;
new_div = 0;
while (new_min > 192 && new_div < 3) {
new_div++;
new_min /= 2;
}
if (!new_min) /* keep > 0 */
new_min++;
data->fan_min[nr] = new_min;
dev_dbg(&client->dev, "fan%u low limit set fan speed %u\n",
nr + 1, FAN_FROM_REG(new_min, 1 << new_div));
}
if (new_div != data->fan_div[nr]) {
data->fan_div[nr] = new_div;
adm9240_write_fan_div(client, nr, new_div);
}
adm9240_write_value(client, ADM9240_REG_FAN_MIN(nr),
data->fan_min[nr]);
up(&data->update_lock);
return count;
}
#define show_fan_offset(offset) \
static ssize_t show_fan_##offset (struct device *dev, \
struct device_attribute *attr, \
char *buf) \
{ \
return show_fan(dev, buf, offset - 1); \
} \
static ssize_t show_fan_##offset##_div (struct device *dev, \
struct device_attribute *attr, \
char *buf) \
{ \
return show_fan_div(dev, buf, offset - 1); \
} \
static ssize_t show_fan_##offset##_min (struct device *dev, \
struct device_attribute *attr, \
char *buf) \
{ \
return show_fan_min(dev, buf, offset - 1); \
} \
static ssize_t set_fan_##offset##_min (struct device *dev, \
struct device_attribute *attr, \
const char *buf, size_t count) \
{ \
return set_fan_min(dev, buf, count, offset - 1); \
} \
static DEVICE_ATTR(fan##offset##_input, S_IRUGO, \
show_fan_##offset, NULL); \
static DEVICE_ATTR(fan##offset##_div, S_IRUGO, \
show_fan_##offset##_div, NULL); \
static DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \
show_fan_##offset##_min, set_fan_##offset##_min);
show_fan_offset(1);
show_fan_offset(2);
/* alarms */
static ssize_t show_alarms(struct device *dev, struct device_attribute *attr, char *buf)
{
struct adm9240_data *data = adm9240_update_device(dev);
return sprintf(buf, "%u\n", data->alarms);
}
static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL);
/* vid */
static ssize_t show_vid(struct device *dev, struct device_attribute *attr, char *buf)
{
struct adm9240_data *data = adm9240_update_device(dev);
return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm));
}
static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid, NULL);
/* analog output */
static ssize_t show_aout(struct device *dev, struct device_attribute *attr, char *buf)
{
struct adm9240_data *data = adm9240_update_device(dev);
return sprintf(buf, "%d\n", AOUT_FROM_REG(data->aout));
}
static ssize_t set_aout(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
{
struct i2c_client *client = to_i2c_client(dev);
struct adm9240_data *data = i2c_get_clientdata(client);
unsigned long val = simple_strtol(buf, NULL, 10);
down(&data->update_lock);
data->aout = AOUT_TO_REG(val);
adm9240_write_value(client, ADM9240_REG_ANALOG_OUT, data->aout);
up(&data->update_lock);
return count;
}
static DEVICE_ATTR(aout_output, S_IRUGO | S_IWUSR, show_aout, set_aout);
/* chassis_clear */
static ssize_t chassis_clear(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
{
struct i2c_client *client = to_i2c_client(dev);
unsigned long val = simple_strtol(buf, NULL, 10);
if (val == 1) {
adm9240_write_value(client, ADM9240_REG_CHASSIS_CLEAR, 0x80);
dev_dbg(&client->dev, "chassis intrusion latch cleared\n");
}
return count;
}
static DEVICE_ATTR(chassis_clear, S_IWUSR, NULL, chassis_clear);
/*** sensor chip detect and driver install ***/
static int adm9240_detect(struct i2c_adapter *adapter, int address, int kind)
{
struct i2c_client *new_client;
struct adm9240_data *data;
int err = 0;
const char *name = "";
u8 man_id, die_rev;
if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
goto exit;
if (!(data = kmalloc(sizeof(struct adm9240_data), GFP_KERNEL))) {
err = -ENOMEM;
goto exit;
}
memset(data, 0, sizeof(struct adm9240_data));
new_client = &data->client;
i2c_set_clientdata(new_client, data);
new_client->addr = address;
new_client->adapter = adapter;
new_client->driver = &adm9240_driver;
new_client->flags = 0;
if (kind == 0) {
kind = adm9240;
}
if (kind < 0) {
/* verify chip: reg address should match i2c address */
if (adm9240_read_value(new_client, ADM9240_REG_I2C_ADDR)
!= address) {
dev_err(&adapter->dev, "detect fail: address match, "
"0x%02x\n", address);
goto exit_free;
}
/* check known chip manufacturer */
man_id = adm9240_read_value(new_client, ADM9240_REG_MAN_ID);
if (man_id == 0x23) {
kind = adm9240;
} else if (man_id == 0xda) {
kind = ds1780;
} else if (man_id == 0x01) {
kind = lm81;
} else {
dev_err(&adapter->dev, "detect fail: unknown manuf, "
"0x%02x\n", man_id);
goto exit_free;
}
/* successful detect, print chip info */
die_rev = adm9240_read_value(new_client, ADM9240_REG_DIE_REV);
dev_info(&adapter->dev, "found %s revision %u\n",
man_id == 0x23 ? "ADM9240" :
man_id == 0xda ? "DS1780" : "LM81", die_rev);
}
/* either forced or detected chip kind */
if (kind == adm9240) {
name = "adm9240";
} else if (kind == ds1780) {
name = "ds1780";
} else if (kind == lm81) {
name = "lm81";
}
/* fill in the remaining client fields and attach */
strlcpy(new_client->name, name, I2C_NAME_SIZE);
data->type = kind;
init_MUTEX(&data->update_lock);
if ((err = i2c_attach_client(new_client)))
goto exit_free;
adm9240_init_client(new_client);
/* populate sysfs filesystem */
device_create_file(&new_client->dev, &dev_attr_in0_input);
device_create_file(&new_client->dev, &dev_attr_in0_min);
device_create_file(&new_client->dev, &dev_attr_in0_max);
device_create_file(&new_client->dev, &dev_attr_in1_input);
device_create_file(&new_client->dev, &dev_attr_in1_min);
device_create_file(&new_client->dev, &dev_attr_in1_max);
device_create_file(&new_client->dev, &dev_attr_in2_input);
device_create_file(&new_client->dev, &dev_attr_in2_min);
device_create_file(&new_client->dev, &dev_attr_in2_max);
device_create_file(&new_client->dev, &dev_attr_in3_input);
device_create_file(&new_client->dev, &dev_attr_in3_min);
device_create_file(&new_client->dev, &dev_attr_in3_max);
device_create_file(&new_client->dev, &dev_attr_in4_input);
device_create_file(&new_client->dev, &dev_attr_in4_min);
device_create_file(&new_client->dev, &dev_attr_in4_max);
device_create_file(&new_client->dev, &dev_attr_in5_input);
device_create_file(&new_client->dev, &dev_attr_in5_min);
device_create_file(&new_client->dev, &dev_attr_in5_max);
device_create_file(&new_client->dev, &dev_attr_temp1_max);
device_create_file(&new_client->dev, &dev_attr_temp1_max_hyst);
device_create_file(&new_client->dev, &dev_attr_temp1_input);
device_create_file(&new_client->dev, &dev_attr_fan1_input);
device_create_file(&new_client->dev, &dev_attr_fan1_div);
device_create_file(&new_client->dev, &dev_attr_fan1_min);
device_create_file(&new_client->dev, &dev_attr_fan2_input);
device_create_file(&new_client->dev, &dev_attr_fan2_div);
device_create_file(&new_client->dev, &dev_attr_fan2_min);
device_create_file(&new_client->dev, &dev_attr_alarms);
device_create_file(&new_client->dev, &dev_attr_aout_output);
device_create_file(&new_client->dev, &dev_attr_chassis_clear);
device_create_file(&new_client->dev, &dev_attr_cpu0_vid);
return 0;
exit_free:
kfree(new_client);
exit:
return err;
}
static int adm9240_attach_adapter(struct i2c_adapter *adapter)
{
if (!(adapter->class & I2C_CLASS_HWMON))
return 0;
return i2c_detect(adapter, &addr_data, adm9240_detect);
}
static int adm9240_detach_client(struct i2c_client *client)
{
int err;
if ((err = i2c_detach_client(client))) {
dev_err(&client->dev, "Client deregistration failed, "
"client not detached.\n");
return err;
}
kfree(i2c_get_clientdata(client));
return 0;
}
static void adm9240_init_client(struct i2c_client *client)
{
struct adm9240_data *data = i2c_get_clientdata(client);
u8 conf = adm9240_read_value(client, ADM9240_REG_CONFIG);
u8 mode = adm9240_read_value(client, ADM9240_REG_TEMP_CONF) & 3;
data->vrm = i2c_which_vrm(); /* need this to report vid as mV */
dev_info(&client->dev, "Using VRM: %d.%d\n", data->vrm / 10,
data->vrm % 10);
if (conf & 1) { /* measurement cycle running: report state */
dev_info(&client->dev, "status: config 0x%02x mode %u\n",
conf, mode);
} else { /* cold start: open limits before starting chip */
int i;
for (i = 0; i < 6; i++)
{
adm9240_write_value(client,
ADM9240_REG_IN_MIN(i), 0);
adm9240_write_value(client,
ADM9240_REG_IN_MAX(i), 255);
}
adm9240_write_value(client, ADM9240_REG_FAN_MIN(0), 255);
adm9240_write_value(client, ADM9240_REG_FAN_MIN(1), 255);
adm9240_write_value(client, ADM9240_REG_TEMP_HIGH, 127);
adm9240_write_value(client, ADM9240_REG_TEMP_HYST, 127);
/* start measurement cycle */
adm9240_write_value(client, ADM9240_REG_CONFIG, 1);
dev_info(&client->dev, "cold start: config was 0x%02x "
"mode %u\n", conf, mode);
}
}
static struct adm9240_data *adm9240_update_device(struct device *dev)
{
struct i2c_client *client = to_i2c_client(dev);
struct adm9240_data *data = i2c_get_clientdata(client);
int i;
down(&data->update_lock);
/* minimum measurement cycle: 1.75 seconds */
if (time_after(jiffies, data->last_updated_measure + (HZ * 7 / 4))
|| !data->valid) {
for (i = 0; i < 6; i++) /* read voltages */
{
data->in[i] = adm9240_read_value(client,
ADM9240_REG_IN(i));
}
data->alarms = adm9240_read_value(client,
ADM9240_REG_INT(0)) |
adm9240_read_value(client,
ADM9240_REG_INT(1)) << 8;
/* read temperature: assume temperature changes less than
* 0.5'C per two measurement cycles thus ignore possible
* but unlikely aliasing error on lsb reading. --Grant */
data->temp = ((adm9240_read_value(client,
ADM9240_REG_TEMP) << 8) |
adm9240_read_value(client,
ADM9240_REG_TEMP_CONF)) / 128;
for (i = 0; i < 2; i++) /* read fans */
{
data->fan[i] = adm9240_read_value(client,
ADM9240_REG_FAN(i));
/* adjust fan clock divider on overflow */
if (data->valid && data->fan[i] == 255 &&
data->fan_div[i] < 3) {
adm9240_write_fan_div(client, i,
++data->fan_div[i]);
/* adjust fan_min if active, but not to 0 */
if (data->fan_min[i] < 255 &&
data->fan_min[i] >= 2)
data->fan_min[i] /= 2;
}
}
data->last_updated_measure = jiffies;
}
/* minimum config reading cycle: 300 seconds */
if (time_after(jiffies, data->last_updated_config + (HZ * 300))
|| !data->valid) {
for (i = 0; i < 6; i++)
{
data->in_min[i] = adm9240_read_value(client,
ADM9240_REG_IN_MIN(i));
data->in_max[i] = adm9240_read_value(client,
ADM9240_REG_IN_MAX(i));
}
for (i = 0; i < 2; i++)
{
data->fan_min[i] = adm9240_read_value(client,
ADM9240_REG_FAN_MIN(i));
}
data->temp_high = adm9240_read_value(client,
ADM9240_REG_TEMP_HIGH);
data->temp_hyst = adm9240_read_value(client,
ADM9240_REG_TEMP_HYST);
/* read fan divs and 5-bit VID */
i = adm9240_read_value(client, ADM9240_REG_VID_FAN_DIV);
data->fan_div[0] = (i >> 4) & 3;
data->fan_div[1] = (i >> 6) & 3;
data->vid = i & 0x0f;
data->vid |= (adm9240_read_value(client,
ADM9240_REG_VID4) & 1) << 4;
/* read analog out */
data->aout = adm9240_read_value(client,
ADM9240_REG_ANALOG_OUT);
data->last_updated_config = jiffies;
data->valid = 1;
}
up(&data->update_lock);
return data;
}
static int __init sensors_adm9240_init(void)
{
return i2c_add_driver(&adm9240_driver);
}
static void __exit sensors_adm9240_exit(void)
{
i2c_del_driver(&adm9240_driver);
}
MODULE_AUTHOR("Michiel Rook <michiel@grendelproject.nl>, "
"Grant Coady <gcoady@gmail.com> and others");
MODULE_DESCRIPTION("ADM9240/DS1780/LM81 driver");
MODULE_LICENSE("GPL");
module_init(sensors_adm9240_init);
module_exit(sensors_adm9240_exit);

5
drivers/i2c/chips/asb100.c
View File

@ -42,6 +42,7 @@
#include <linux/i2c-sensor.h>
#include <linux/i2c-vid.h>
#include <linux/init.h>
#include <linux/jiffies.h>
#include "lm75.h"
/*
@ -168,8 +169,6 @@ static int ASB100_PWM_FROM_REG(u8 reg)
return reg * 16;
}
#define ALARMS_FROM_REG(val) (val)
#define DIV_FROM_REG(val) (1 << (val))
/* FAN DIV: 1, 2, 4, or 8 (defaults to 2)
@ -556,7 +555,7 @@ device_create_file(&client->dev, &dev_attr_vrm);
static ssize_t show_alarms(struct device *dev, struct device_attribute *attr, char *buf)
{
struct asb100_data *data = asb100_update_device(dev);
return sprintf(buf, "%d\n", ALARMS_FROM_REG(data->alarms));
return sprintf(buf, "%u\n", data->alarms);
}
static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL);

361
drivers/i2c/chips/atxp1.c Normal file
View File

@ -0,0 +1,361 @@
/*
atxp1.c - kernel module for setting CPU VID and general purpose
I/Os using the Attansic ATXP1 chip.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/i2c.h>
#include <linux/i2c-sensor.h>
#include <linux/i2c-vid.h>
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("System voltages control via Attansic ATXP1");
MODULE_VERSION("0.6.2");
MODULE_AUTHOR("Sebastian Witt <se.witt@gmx.net>");
#define ATXP1_VID 0x00
#define ATXP1_CVID 0x01
#define ATXP1_GPIO1 0x06
#define ATXP1_GPIO2 0x0a
#define ATXP1_VIDENA 0x20
#define ATXP1_VIDMASK 0x1f
#define ATXP1_GPIO1MASK 0x0f
static unsigned short normal_i2c[] = { 0x37, 0x4e, I2C_CLIENT_END };
static unsigned int normal_isa[] = { I2C_CLIENT_ISA_END };
SENSORS_INSMOD_1(atxp1);
static int atxp1_attach_adapter(struct i2c_adapter * adapter);
static int atxp1_detach_client(struct i2c_client * client);
static struct atxp1_data * atxp1_update_device(struct device *dev);
static int atxp1_detect(struct i2c_adapter *adapter, int address, int kind);
static struct i2c_driver atxp1_driver = {
.owner = THIS_MODULE,
.name = "atxp1",
.flags = I2C_DF_NOTIFY,
.attach_adapter = atxp1_attach_adapter,
.detach_client = atxp1_detach_client,
};
struct atxp1_data {
struct i2c_client client;
struct semaphore update_lock;
unsigned long last_updated;
u8 valid;
struct {
u8 vid; /* VID output register */
u8 cpu_vid; /* VID input from CPU */
u8 gpio1; /* General purpose I/O register 1 */
u8 gpio2; /* General purpose I/O register 2 */
} reg;
u8 vrm; /* Detected CPU VRM */
};
static struct atxp1_data * atxp1_update_device(struct device *dev)
{
struct i2c_client *client;
struct atxp1_data *data;
client = to_i2c_client(dev);
data = i2c_get_clientdata(client);
down(&data->update_lock);
if ((jiffies - data->last_updated > HZ) ||
(jiffies < data->last_updated) ||
!data->valid) {
/* Update local register data */
data->reg.vid = i2c_smbus_read_byte_data(client, ATXP1_VID);
data->reg.cpu_vid = i2c_smbus_read_byte_data(client, ATXP1_CVID);
data->reg.gpio1 = i2c_smbus_read_byte_data(client, ATXP1_GPIO1);
data->reg.gpio2 = i2c_smbus_read_byte_data(client, ATXP1_GPIO2);
data->valid = 1;
}
up(&data->update_lock);
return(data);
}
/* sys file functions for cpu0_vid */
static ssize_t atxp1_showvcore(struct device *dev, struct device_attribute *attr, char *buf)
{
int size;
struct atxp1_data *data;
data = atxp1_update_device(dev);
size = sprintf(buf, "%d\n", vid_from_reg(data->reg.vid & ATXP1_VIDMASK, data->vrm));
return size;
}
static ssize_t atxp1_storevcore(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
{
struct atxp1_data *data;
struct i2c_client *client;
char vid;
char cvid;
unsigned int vcore;
client = to_i2c_client(dev);
data = atxp1_update_device(dev);
vcore = simple_strtoul(buf, NULL, 10);
vcore /= 25;
vcore *= 25;
/* Calculate VID */
vid = vid_to_reg(vcore, data->vrm);
if (vid < 0) {
dev_err(dev, "VID calculation failed.\n");
return -1;
}
/* If output enabled, use control register value. Otherwise original CPU VID */
if (data->reg.vid & ATXP1_VIDENA)
cvid = data->reg.vid & ATXP1_VIDMASK;
else
cvid = data->reg.cpu_vid;
/* Nothing changed, aborting */
if (vid == cvid)
return count;
dev_info(dev, "Setting VCore to %d mV (0x%02x)\n", vcore, vid);
/* Write every 25 mV step to increase stability */
if (cvid > vid) {
for (; cvid >= vid; cvid--) {
i2c_smbus_write_byte_data(client, ATXP1_VID, cvid | ATXP1_VIDENA);
}
}
else {
for (; cvid <= vid; cvid++) {
i2c_smbus_write_byte_data(client, ATXP1_VID, cvid | ATXP1_VIDENA);
}
}
data->valid = 0;
return count;
}
/* CPU core reference voltage
unit: millivolt
*/
static DEVICE_ATTR(cpu0_vid, S_IRUGO | S_IWUSR, atxp1_showvcore, atxp1_storevcore);
/* sys file functions for GPIO1 */
static ssize_t atxp1_showgpio1(struct device *dev, struct device_attribute *attr, char *buf)
{
int size;
struct atxp1_data *data;
data = atxp1_update_device(dev);
size = sprintf(buf, "0x%02x\n", data->reg.gpio1 & ATXP1_GPIO1MASK);
return size;
}
static ssize_t atxp1_storegpio1(struct device *dev, struct device_attribute *attr, const char*buf, size_t count)
{
struct atxp1_data *data;
struct i2c_client *client;
unsigned int value;
client = to_i2c_client(dev);
data = atxp1_update_device(dev);
value = simple_strtoul(buf, NULL, 16);
value &= ATXP1_GPIO1MASK;
if (value != (data->reg.gpio1 & ATXP1_GPIO1MASK)) {
dev_info(dev, "Writing 0x%x to GPIO1.\n", value);
i2c_smbus_write_byte_data(client, ATXP1_GPIO1, value);
data->valid = 0;
}
return count;
}
/* GPIO1 data register
unit: Four bit as hex (e.g. 0x0f)
*/
static DEVICE_ATTR(gpio1, S_IRUGO | S_IWUSR, atxp1_showgpio1, atxp1_storegpio1);
/* sys file functions for GPIO2 */
static ssize_t atxp1_showgpio2(struct device *dev, struct device_attribute *attr, char *buf)
{
int size;
struct atxp1_data *data;
data = atxp1_update_device(dev);
size = sprintf(buf, "0x%02x\n", data->reg.gpio2);
return size;
}
static ssize_t atxp1_storegpio2(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
{
struct atxp1_data *data;
struct i2c_client *client;
unsigned int value;
client = to_i2c_client(dev);
data = atxp1_update_device(dev);
value = simple_strtoul(buf, NULL, 16) & 0xff;
if (value != data->reg.gpio2) {
dev_info(dev, "Writing 0x%x to GPIO1.\n", value);
i2c_smbus_write_byte_data(client, ATXP1_GPIO2, value);
data->valid = 0;
}
return count;
}
/* GPIO2 data register
unit: Eight bit as hex (e.g. 0xff)
*/
static DEVICE_ATTR(gpio2, S_IRUGO | S_IWUSR, atxp1_showgpio2, atxp1_storegpio2);
static int atxp1_attach_adapter(struct i2c_adapter *adapter)
{
return i2c_detect(adapter, &addr_data, &atxp1_detect);
};
static int atxp1_detect(struct i2c_adapter *adapter, int address, int kind)
{
struct i2c_client * new_client;
struct atxp1_data * data;
int err = 0;
u8 temp;
if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
goto exit;
if (!(data = kmalloc(sizeof(struct atxp1_data), GFP_KERNEL))) {
err = -ENOMEM;
goto exit;
}
memset(data, 0, sizeof(struct atxp1_data));
new_client = &data->client;
i2c_set_clientdata(new_client, data);
new_client->addr = address;
new_client->adapter = adapter;
new_client->driver = &atxp1_driver;
new_client->flags = 0;
/* Detect ATXP1, checking if vendor ID registers are all zero */
if (!((i2c_smbus_read_byte_data(new_client, 0x3e) == 0) &&
(i2c_smbus_read_byte_data(new_client, 0x3f) == 0) &&
(i2c_smbus_read_byte_data(new_client, 0xfe) == 0) &&
(i2c_smbus_read_byte_data(new_client, 0xff) == 0) )) {
/* No vendor ID, now checking if registers 0x10,0x11 (non-existent)
* showing the same as register 0x00 */
temp = i2c_smbus_read_byte_data(new_client, 0x00);
if (!((i2c_smbus_read_byte_data(new_client, 0x10) == temp) &&
(i2c_smbus_read_byte_data(new_client, 0x11) == temp) ))
goto exit_free;
}
/* Get VRM */
data->vrm = i2c_which_vrm();
if ((data->vrm != 90) && (data->vrm != 91)) {
dev_err(&new_client->dev, "Not supporting VRM %d.%d\n",
data->vrm / 10, data->vrm % 10);
goto exit_free;
}
strncpy(new_client->name, "atxp1", I2C_NAME_SIZE);
data->valid = 0;
init_MUTEX(&data->update_lock);
err = i2c_attach_client(new_client);
if (err)
{
dev_err(&new_client->dev, "Attach client error.\n");
goto exit_free;
}
device_create_file(&new_client->dev, &dev_attr_gpio1);
device_create_file(&new_client->dev, &dev_attr_gpio2);
device_create_file(&new_client->dev, &dev_attr_cpu0_vid);
dev_info(&new_client->dev, "Using VRM: %d.%d\n",
data->vrm / 10, data->vrm % 10);
return 0;
exit_free:
kfree(data);
exit:
return err;
};
static int atxp1_detach_client(struct i2c_client * client)
{
int err;
err = i2c_detach_client(client);
if (err)
dev_err(&client->dev, "Failed to detach client.\n");
else
kfree(i2c_get_clientdata(client));
return err;
};
static int __init atxp1_init(void)
{
return i2c_add_driver(&atxp1_driver);
};
static void __exit atxp1_exit(void)
{
i2c_del_driver(&atxp1_driver);
};
module_init(atxp1_init);
module_exit(atxp1_exit);

97
drivers/i2c/chips/ds1337.c
View File

@ -3,17 +3,16 @@
*
* Copyright (C) 2005 James Chapman <jchapman@katalix.com>
*
* based on linux/drivers/acron/char/pcf8583.c
* based on linux/drivers/acorn/char/pcf8583.c
* Copyright (C) 2000 Russell King
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* Driver for Dallas Semiconductor DS1337 real time clock chip
* Driver for Dallas Semiconductor DS1337 and DS1339 real time clock chip
*/
#include <linux/config.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/slab.h>
@ -69,13 +68,11 @@ static struct i2c_driver ds1337_driver = {
struct ds1337_data {
struct i2c_client client;
struct list_head list;
int id;
};
/*
* Internal variables
*/
static int ds1337_id;
static LIST_HEAD(ds1337_clients);
static inline int ds1337_read(struct i2c_client *client, u8 reg, u8 *value)
@ -95,7 +92,6 @@ static inline int ds1337_read(struct i2c_client *client, u8 reg, u8 *value)
*/
static int ds1337_get_datetime(struct i2c_client *client, struct rtc_time *dt)
{
struct ds1337_data *data = i2c_get_clientdata(client);
int result;
u8 buf[7];
u8 val;
@ -103,9 +99,7 @@ static int ds1337_get_datetime(struct i2c_client *client, struct rtc_time *dt)
u8 offs = 0;
if (!dt) {
dev_dbg(&client->adapter->dev, "%s: EINVAL: dt=NULL\n",
__FUNCTION__);
dev_dbg(&client->dev, "%s: EINVAL: dt=NULL\n", __FUNCTION__);
return -EINVAL;
}
@ -119,98 +113,86 @@ static int ds1337_get_datetime(struct i2c_client *client, struct rtc_time *dt)
msg[1].len = sizeof(buf);
msg[1].buf = &buf[0];
result = client->adapter->algo->master_xfer(client->adapter,
&msg[0], 2);
result = i2c_transfer(client->adapter, msg, 2);
dev_dbg(&client->adapter->dev,
"%s: [%d] %02x %02x %02x %02x %02x %02x %02x\n",
dev_dbg(&client->dev, "%s: [%d] %02x %02x %02x %02x %02x %02x %02x\n",
__FUNCTION__, result, buf[0], buf[1], buf[2], buf[3],
buf[4], buf[5], buf[6]);
if (result >= 0) {
dt->tm_sec = BCD_TO_BIN(buf[0]);
dt->tm_min = BCD_TO_BIN(buf[1]);
if (result == 2) {
dt->tm_sec = BCD2BIN(buf[0]);
dt->tm_min = BCD2BIN(buf[1]);
val = buf[2] & 0x3f;
dt->tm_hour = BCD_TO_BIN(val);
dt->tm_wday = BCD_TO_BIN(buf[3]) - 1;
dt->tm_mday = BCD_TO_BIN(buf[4]);
dt->tm_hour = BCD2BIN(val);
dt->tm_wday = BCD2BIN(buf[3]) - 1;
dt->tm_mday = BCD2BIN(buf[4]);
val = buf[5] & 0x7f;
dt->tm_mon = BCD_TO_BIN(val);
dt->tm_year = 1900 + BCD_TO_BIN(buf[6]);
dt->tm_mon = BCD2BIN(val) - 1;
dt->tm_year = BCD2BIN(buf[6]);
if (buf[5] & 0x80)
dt->tm_year += 100;
dev_dbg(&client->adapter->dev, "%s: secs=%d, mins=%d, "
dev_dbg(&client->dev, "%s: secs=%d, mins=%d, "
"hours=%d, mday=%d, mon=%d, year=%d, wday=%d\n",
__FUNCTION__, dt->tm_sec, dt->tm_min,
dt->tm_hour, dt->tm_mday,
dt->tm_mon, dt->tm_year, dt->tm_wday);
} else {
dev_err(&client->adapter->dev, "ds1337[%d]: error reading "
"data! %d\n", data->id, result);
result = -EIO;
return 0;
}
return result;
dev_err(&client->dev, "error reading data! %d\n", result);
return -EIO;
}
static int ds1337_set_datetime(struct i2c_client *client, struct rtc_time *dt)
{
struct ds1337_data *data = i2c_get_clientdata(client);
int result;
u8 buf[8];
u8 val;
struct i2c_msg msg[1];
if (!dt) {
dev_dbg(&client->adapter->dev, "%s: EINVAL: dt=NULL\n",
__FUNCTION__);
dev_dbg(&client->dev, "%s: EINVAL: dt=NULL\n", __FUNCTION__);
return -EINVAL;
}
dev_dbg(&client->adapter->dev, "%s: secs=%d, mins=%d, hours=%d, "
dev_dbg(&client->dev, "%s: secs=%d, mins=%d, hours=%d, "
"mday=%d, mon=%d, year=%d, wday=%d\n", __FUNCTION__,
dt->tm_sec, dt->tm_min, dt->tm_hour,
dt->tm_mday, dt->tm_mon, dt->tm_year, dt->tm_wday);
buf[0] = 0; /* reg offset */
buf[1] = BIN_TO_BCD(dt->tm_sec);
buf[2] = BIN_TO_BCD(dt->tm_min);
buf[3] = BIN_TO_BCD(dt->tm_hour) | (1 << 6);
buf[4] = BIN_TO_BCD(dt->tm_wday) + 1;
buf[5] = BIN_TO_BCD(dt->tm_mday);
buf[6] = BIN_TO_BCD(dt->tm_mon);
if (dt->tm_year >= 2000) {
val = dt->tm_year - 2000;
buf[1] = BIN2BCD(dt->tm_sec);
buf[2] = BIN2BCD(dt->tm_min);
buf[3] = BIN2BCD(dt->tm_hour) | (1 << 6);
buf[4] = BIN2BCD(dt->tm_wday) + 1;
buf[5] = BIN2BCD(dt->tm_mday);
buf[6] = BIN2BCD(dt->tm_mon) + 1;
val = dt->tm_year;
if (val >= 100) {
val -= 100;
buf[6] |= (1 << 7);
} else {
val = dt->tm_year - 1900;
}
buf[7] = BIN_TO_BCD(val);
buf[7] = BIN2BCD(val);
msg[0].addr = client->addr;
msg[0].flags = 0;
msg[0].len = sizeof(buf);
msg[0].buf = &buf[0];
result = client->adapter->algo->master_xfer(client->adapter,
&msg[0], 1);
if (result < 0) {
dev_err(&client->adapter->dev, "ds1337[%d]: error "
"writing data! %d\n", data->id, result);
result = -EIO;
} else {
result = 0;
}
result = i2c_transfer(client->adapter, msg, 1);
if (result == 1)
return 0;
return result;
dev_err(&client->dev, "error writing data! %d\n", result);
return -EIO;
}
static int ds1337_command(struct i2c_client *client, unsigned int cmd,
void *arg)
{
dev_dbg(&client->adapter->dev, "%s: cmd=%d\n", __FUNCTION__, cmd);
dev_dbg(&client->dev, "%s: cmd=%d\n", __FUNCTION__, cmd);
switch (cmd) {
case DS1337_GET_DATE:
@ -228,7 +210,7 @@ static int ds1337_command(struct i2c_client *client, unsigned int cmd,
* Public API for access to specific device. Useful for low-level
* RTC access from kernel code.
*/
int ds1337_do_command(int id, int cmd, void *arg)
int ds1337_do_command(int bus, int cmd, void *arg)
{
struct list_head *walk;
struct list_head *tmp;
@ -236,7 +218,7 @@ int ds1337_do_command(int id, int cmd, void *arg)
list_for_each_safe(walk, tmp, &ds1337_clients) {
data = list_entry(walk, struct ds1337_data, list);
if (data->id == id)
if (data->client.adapter->nr == bus)
return ds1337_command(&data->client, cmd, arg);
}
@ -346,7 +328,6 @@ static int ds1337_detect(struct i2c_adapter *adapter, int address, int kind)
ds1337_init_client(new_client);
/* Add client to local list */
data->id = ds1337_id++;
list_add(&data->list, &ds1337_clients);
return 0;
@ -398,5 +379,7 @@ MODULE_AUTHOR("James Chapman <jchapman@katalix.com>");
MODULE_DESCRIPTION("DS1337 RTC driver");
MODULE_LICENSE("GPL");
EXPORT_SYMBOL_GPL(ds1337_do_command);
module_init(ds1337_init);
module_exit(ds1337_exit);

260
drivers/i2c/chips/ds1374.c Normal file
View File

@ -0,0 +1,260 @@
/*
* drivers/i2c/chips/ds1374.c
*
* I2C client/driver for the Maxim/Dallas DS1374 Real-Time Clock
*
* Author: Randy Vinson <rvinson@mvista.com>
*
* Based on the m41t00.c by Mark Greer <mgreer@mvista.com>
*
* 2005 (c) MontaVista Software, Inc. This file is licensed under
* the terms of the GNU General Public License version 2. This program
* is licensed "as is" without any warranty of any kind, whether express
* or implied.
*/
/*
* This i2c client/driver wedges between the drivers/char/genrtc.c RTC
* interface and the SMBus interface of the i2c subsystem.
* It would be more efficient to use i2c msgs/i2c_transfer directly but, as
* recommened in .../Documentation/i2c/writing-clients section
* "Sending and receiving", using SMBus level communication is preferred.
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/interrupt.h>
#include <linux/i2c.h>
#include <linux/rtc.h>
#include <linux/bcd.h>
#define DS1374_REG_TOD0 0x00
#define DS1374_REG_TOD1 0x01
#define DS1374_REG_TOD2 0x02
#define DS1374_REG_TOD3 0x03
#define DS1374_REG_WDALM0 0x04
#define DS1374_REG_WDALM1 0x05
#define DS1374_REG_WDALM2 0x06
#define DS1374_REG_CR 0x07
#define DS1374_REG_SR 0x08
#define DS1374_REG_SR_OSF 0x80
#define DS1374_REG_TCR 0x09
#define DS1374_DRV_NAME "ds1374"
static DECLARE_MUTEX(ds1374_mutex);
static struct i2c_driver ds1374_driver;
static struct i2c_client *save_client;
static unsigned short ignore[] = { I2C_CLIENT_END };
static unsigned short normal_addr[] = { 0x68, I2C_CLIENT_END };
static struct i2c_client_address_data addr_data = {
.normal_i2c = normal_addr,
.probe = ignore,
.ignore = ignore,
.force = ignore,
};
static ulong ds1374_read_rtc(void)
{
ulong time = 0;
int reg = DS1374_REG_WDALM0;
while (reg--) {
s32 tmp;
if ((tmp = i2c_smbus_read_byte_data(save_client, reg)) < 0) {
dev_warn(&save_client->dev,
"can't read from rtc chip\n");
return 0;
}
time = (time << 8) | (tmp & 0xff);
}
return time;
}
static void ds1374_write_rtc(ulong time)
{
int reg;
for (reg = DS1374_REG_TOD0; reg < DS1374_REG_WDALM0; reg++) {
if (i2c_smbus_write_byte_data(save_client, reg, time & 0xff)
< 0) {
dev_warn(&save_client->dev,
"can't write to rtc chip\n");
break;
}
time = time >> 8;
}
}
static void ds1374_check_rtc_status(void)
{
s32 tmp;
tmp = i2c_smbus_read_byte_data(save_client, DS1374_REG_SR);
if (tmp < 0) {
dev_warn(&save_client->dev,
"can't read status from rtc chip\n");
return;
}
if (tmp & DS1374_REG_SR_OSF) {
dev_warn(&save_client->dev,
"oscillator discontinuity flagged, time unreliable\n");
tmp &= ~DS1374_REG_SR_OSF;
tmp = i2c_smbus_write_byte_data(save_client, DS1374_REG_SR,
tmp & 0xff);
if (tmp < 0)
dev_warn(&save_client->dev,
"can't clear discontinuity notification\n");
}
}
ulong ds1374_get_rtc_time(void)
{
ulong t1, t2;
int limit = 10; /* arbitrary retry limit */
down(&ds1374_mutex);
/*
* Since the reads are being performed one byte at a time using
* the SMBus vs a 4-byte i2c transfer, there is a chance that a
* carry will occur during the read. To detect this, 2 reads are
* performed and compared.
*/
do {
t1 = ds1374_read_rtc();
t2 = ds1374_read_rtc();
} while (t1 != t2 && limit--);
up(&ds1374_mutex);
if (t1 != t2) {
dev_warn(&save_client->dev,
"can't get consistent time from rtc chip\n");
t1 = 0;
}
return t1;
}
static void ds1374_set_tlet(ulong arg)
{
ulong t1, t2;
int limit = 10; /* arbitrary retry limit */
t1 = *(ulong *) arg;
down(&ds1374_mutex);
/*
* Since the writes are being performed one byte at a time using
* the SMBus vs a 4-byte i2c transfer, there is a chance that a
* carry will occur during the write. To detect this, the write
* value is read back and compared.
*/
do {
ds1374_write_rtc(t1);
t2 = ds1374_read_rtc();
} while (t1 != t2 && limit--);
up(&ds1374_mutex);
if (t1 != t2)
dev_warn(&save_client->dev,
"can't confirm time set from rtc chip\n");
}
ulong new_time;
DECLARE_TASKLET_DISABLED(ds1374_tasklet, ds1374_set_tlet, (ulong) & new_time);
int ds1374_set_rtc_time(ulong nowtime)
{
new_time = nowtime;
if (in_interrupt())
tasklet_schedule(&ds1374_tasklet);
else
ds1374_set_tlet((ulong) & new_time);
return 0;
}
/*
*****************************************************************************
*
* Driver Interface
*
*****************************************************************************
*/
static int ds1374_probe(struct i2c_adapter *adap, int addr, int kind)
{
struct i2c_client *client;
int rc;
client = kmalloc(sizeof(struct i2c_client), GFP_KERNEL);
if (!client)
return -ENOMEM;
memset(client, 0, sizeof(struct i2c_client));
strncpy(client->name, DS1374_DRV_NAME, I2C_NAME_SIZE);
client->flags = I2C_DF_NOTIFY;
client->addr = addr;
client->adapter = adap;
client->driver = &ds1374_driver;
if ((rc = i2c_attach_client(client)) != 0) {
kfree(client);
return rc;
}
save_client = client;
ds1374_check_rtc_status();
return 0;
}
static int ds1374_attach(struct i2c_adapter *adap)
{
return i2c_probe(adap, &addr_data, ds1374_probe);
}
static int ds1374_detach(struct i2c_client *client)
{
int rc;
if ((rc = i2c_detach_client(client)) == 0) {
kfree(i2c_get_clientdata(client));
tasklet_kill(&ds1374_tasklet);
}
return rc;
}
static struct i2c_driver ds1374_driver = {
.owner = THIS_MODULE,
.name = DS1374_DRV_NAME,
.id = I2C_DRIVERID_DS1374,
.flags = I2C_DF_NOTIFY,
.attach_adapter = ds1374_attach,
.detach_client = ds1374_detach,
};
static int __init ds1374_init(void)
{
return i2c_add_driver(&ds1374_driver);
}
static void __exit ds1374_exit(void)
{
i2c_del_driver(&ds1374_driver);
}
module_init(ds1374_init);
module_exit(ds1374_exit);
MODULE_AUTHOR("Randy Vinson <rvinson@mvista.com>");
MODULE_DESCRIPTION("Maxim/Dallas DS1374 RTC I2C Client Driver");
MODULE_LICENSE("GPL");

4
drivers/i2c/chips/ds1621.c
View File

@ -121,7 +121,7 @@ static int ds1621_write_value(struct i2c_client *client, u8 reg, u16 value)
static void ds1621_init_client(struct i2c_client *client)
{
int reg = ds1621_read_value(client, DS1621_REG_CONF);
/* switch to continous conversion mode */
/* switch to continuous conversion mode */
reg &= ~ DS1621_REG_CONFIG_1SHOT;
/* setup output polarity */
@ -303,7 +303,7 @@ static struct ds1621_data *ds1621_update_client(struct device *dev)
data->temp_max = ds1621_read_value(client,
DS1621_REG_TEMP_MAX);
/* reset alarms if neccessary */
/* reset alarms if necessary */
new_conf = data->conf;
if (data->temp < data->temp_min)
new_conf &= ~DS1621_ALARM_TEMP_LOW;

1
drivers/i2c/chips/eeprom.c
View File

@ -26,7 +26,6 @@
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <linux/config.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/module.h>

1
drivers/i2c/chips/fscher.c
View File

@ -26,7 +26,6 @@
* and Philip Edelbrock <phil@netroedge.com>
*/
#include <linux/config.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/slab.h>

1
drivers/i2c/chips/gl518sm.c
View File

@ -36,7 +36,6 @@
* 2004-01-31 Code review and approval. (Jean Delvare)
*/
#include <linux/config.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/slab.h>

1
drivers/i2c/chips/isp1301_omap.c
View File

@ -145,7 +145,6 @@ static inline void notresponding(struct isp1301 *isp)
static unsigned short normal_i2c[] = {
ISP_BASE, ISP_BASE + 1,
I2C_CLIENT_END };
static unsigned short normal_i2c_range[] = { I2C_CLIENT_END };
I2C_CLIENT_INSMOD;

396
drivers/i2c/chips/it87.c
View File

@ -31,7 +31,6 @@
type at module load time.
*/
#include <linux/config.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/slab.h>
@ -39,6 +38,7 @@
#include <linux/i2c.h>
#include <linux/i2c-sensor.h>
#include <linux/i2c-vid.h>
#include <linux/hwmon-sysfs.h>
#include <asm/io.h>
@ -173,8 +173,6 @@ static inline u8 FAN_TO_REG(long rpm, int div)
((val)+500)/1000),-128,127))
#define TEMP_FROM_REG(val) (((val)>0x80?(val)-0x100:(val))*1000)
#define ALARMS_FROM_REG(val) (val)
#define PWM_TO_REG(val) ((val) >> 1)
#define PWM_FROM_REG(val) (((val)&0x7f) << 1)
@ -241,27 +239,42 @@ static struct i2c_driver it87_driver = {
.detach_client = it87_detach_client,
};
static ssize_t show_in(struct device *dev, char *buf, int nr)
static ssize_t show_in(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
int nr = sensor_attr->index;
struct it87_data *data = it87_update_device(dev);
return sprintf(buf, "%d\n", IN_FROM_REG(data->in[nr]));
}
static ssize_t show_in_min(struct device *dev, char *buf, int nr)
static ssize_t show_in_min(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
int nr = sensor_attr->index;
struct it87_data *data = it87_update_device(dev);
return sprintf(buf, "%d\n", IN_FROM_REG(data->in_min[nr]));
}
static ssize_t show_in_max(struct device *dev, char *buf, int nr)
static ssize_t show_in_max(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
int nr = sensor_attr->index;
struct it87_data *data = it87_update_device(dev);
return sprintf(buf, "%d\n", IN_FROM_REG(data->in_max[nr]));
}
static ssize_t set_in_min(struct device *dev, const char *buf,
size_t count, int nr)
static ssize_t set_in_min(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
int nr = sensor_attr->index;
struct i2c_client *client = to_i2c_client(dev);
struct it87_data *data = i2c_get_clientdata(client);
unsigned long val = simple_strtoul(buf, NULL, 10);
@ -273,9 +286,12 @@ static ssize_t set_in_min(struct device *dev, const char *buf,
up(&data->update_lock);
return count;
}
static ssize_t set_in_max(struct device *dev, const char *buf,
size_t count, int nr)
static ssize_t set_in_max(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
int nr = sensor_attr->index;
struct i2c_client *client = to_i2c_client(dev);
struct it87_data *data = i2c_get_clientdata(client);
unsigned long val = simple_strtoul(buf, NULL, 10);
@ -289,38 +305,14 @@ static ssize_t set_in_max(struct device *dev, const char *buf,
}
#define show_in_offset(offset) \
static ssize_t \
show_in##offset (struct device *dev, struct device_attribute *attr, char *buf) \
{ \
return show_in(dev, buf, offset); \
} \
static DEVICE_ATTR(in##offset##_input, S_IRUGO, show_in##offset, NULL);
static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, \
show_in, NULL, offset);
#define limit_in_offset(offset) \
static ssize_t \
show_in##offset##_min (struct device *dev, struct device_attribute *attr, char *buf) \
{ \
return show_in_min(dev, buf, offset); \
} \
static ssize_t \
show_in##offset##_max (struct device *dev, struct device_attribute *attr, char *buf) \
{ \
return show_in_max(dev, buf, offset); \
} \
static ssize_t set_in##offset##_min (struct device *dev, struct device_attribute *attr, \
const char *buf, size_t count) \
{ \
return set_in_min(dev, buf, count, offset); \
} \
static ssize_t set_in##offset##_max (struct device *dev, struct device_attribute *attr, \
const char *buf, size_t count) \
{ \
return set_in_max(dev, buf, count, offset); \
} \
static DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \
show_in##offset##_min, set_in##offset##_min); \
static DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \
show_in##offset##_max, set_in##offset##_max);
static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \
show_in_min, set_in_min, offset); \
static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \
show_in_max, set_in_max, offset);
show_in_offset(0);
limit_in_offset(0);
@ -341,24 +333,39 @@ limit_in_offset(7);
show_in_offset(8);
/* 3 temperatures */
static ssize_t show_temp(struct device *dev, char *buf, int nr)
static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
int nr = sensor_attr->index;
struct it87_data *data = it87_update_device(dev);
return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[nr]));
}
static ssize_t show_temp_max(struct device *dev, char *buf, int nr)
static ssize_t show_temp_max(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
int nr = sensor_attr->index;
struct it87_data *data = it87_update_device(dev);
return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_high[nr]));
}
static ssize_t show_temp_min(struct device *dev, char *buf, int nr)
static ssize_t show_temp_min(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
int nr = sensor_attr->index;
struct it87_data *data = it87_update_device(dev);
return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_low[nr]));
}
static ssize_t set_temp_max(struct device *dev, const char *buf,
size_t count, int nr)
static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
int nr = sensor_attr->index;
struct i2c_client *client = to_i2c_client(dev);
struct it87_data *data = i2c_get_clientdata(client);
int val = simple_strtol(buf, NULL, 10);
@ -369,9 +376,12 @@ static ssize_t set_temp_max(struct device *dev, const char *buf,
up(&data->update_lock);
return count;
}
static ssize_t set_temp_min(struct device *dev, const char *buf,
size_t count, int nr)
static ssize_t set_temp_min(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
int nr = sensor_attr->index;
struct i2c_client *client = to_i2c_client(dev);
struct it87_data *data = i2c_get_clientdata(client);
int val = simple_strtol(buf, NULL, 10);
@ -383,42 +393,23 @@ static ssize_t set_temp_min(struct device *dev, const char *buf,
return count;
}
#define show_temp_offset(offset) \
static ssize_t show_temp_##offset (struct device *dev, struct device_attribute *attr, char *buf) \
{ \
return show_temp(dev, buf, offset - 1); \
} \
static ssize_t \
show_temp_##offset##_max (struct device *dev, struct device_attribute *attr, char *buf) \
{ \
return show_temp_max(dev, buf, offset - 1); \
} \
static ssize_t \
show_temp_##offset##_min (struct device *dev, struct device_attribute *attr, char *buf) \
{ \
return show_temp_min(dev, buf, offset - 1); \
} \
static ssize_t set_temp_##offset##_max (struct device *dev, struct device_attribute *attr, \
const char *buf, size_t count) \
{ \
return set_temp_max(dev, buf, count, offset - 1); \
} \
static ssize_t set_temp_##offset##_min (struct device *dev, struct device_attribute *attr, \
const char *buf, size_t count) \
{ \
return set_temp_min(dev, buf, count, offset - 1); \
} \
static DEVICE_ATTR(temp##offset##_input, S_IRUGO, show_temp_##offset, NULL); \
static DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \
show_temp_##offset##_max, set_temp_##offset##_max); \
static DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR, \
show_temp_##offset##_min, set_temp_##offset##_min);
static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO, \
show_temp, NULL, offset - 1); \
static SENSOR_DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \
show_temp_max, set_temp_max, offset - 1); \
static SENSOR_DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR, \
show_temp_min, set_temp_min, offset - 1);
show_temp_offset(1);
show_temp_offset(2);
show_temp_offset(3);
static ssize_t show_sensor(struct device *dev, char *buf, int nr)
static ssize_t show_sensor(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
int nr = sensor_attr->index;
struct it87_data *data = it87_update_device(dev);
u8 reg = data->sensor; /* In case the value is updated while we use it */
@ -428,9 +419,12 @@ static ssize_t show_sensor(struct device *dev, char *buf, int nr)
return sprintf(buf, "2\n"); /* thermistor */
return sprintf(buf, "0\n"); /* disabled */
}
static ssize_t set_sensor(struct device *dev, const char *buf,
size_t count, int nr)
static ssize_t set_sensor(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
int nr = sensor_attr->index;
struct i2c_client *client = to_i2c_client(dev);
struct it87_data *data = i2c_get_clientdata(client);
int val = simple_strtol(buf, NULL, 10);
@ -453,53 +447,67 @@ static ssize_t set_sensor(struct device *dev, const char *buf,
return count;
}
#define show_sensor_offset(offset) \
static ssize_t show_sensor_##offset (struct device *dev, struct device_attribute *attr, char *buf) \
{ \
return show_sensor(dev, buf, offset - 1); \
} \
static ssize_t set_sensor_##offset (struct device *dev, struct device_attribute *attr, \
const char *buf, size_t count) \
{ \
return set_sensor(dev, buf, count, offset - 1); \
} \
static DEVICE_ATTR(temp##offset##_type, S_IRUGO | S_IWUSR, \
show_sensor_##offset, set_sensor_##offset);
static SENSOR_DEVICE_ATTR(temp##offset##_type, S_IRUGO | S_IWUSR, \
show_sensor, set_sensor, offset - 1);
show_sensor_offset(1);
show_sensor_offset(2);
show_sensor_offset(3);
/* 3 Fans */
static ssize_t show_fan(struct device *dev, char *buf, int nr)
static ssize_t show_fan(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
int nr = sensor_attr->index;
struct it87_data *data = it87_update_device(dev);
return sprintf(buf,"%d\n", FAN_FROM_REG(data->fan[nr],
DIV_FROM_REG(data->fan_div[nr])));
}
static ssize_t show_fan_min(struct device *dev, char *buf, int nr)
static ssize_t show_fan_min(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
int nr = sensor_attr->index;
struct it87_data *data = it87_update_device(dev);
return sprintf(buf,"%d\n",
FAN_FROM_REG(data->fan_min[nr], DIV_FROM_REG(data->fan_div[nr])));
}
static ssize_t show_fan_div(struct device *dev, char *buf, int nr)
static ssize_t show_fan_div(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
int nr = sensor_attr->index;
struct it87_data *data = it87_update_device(dev);
return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[nr]));
}
static ssize_t show_pwm_enable(struct device *dev, char *buf, int nr)
static ssize_t show_pwm_enable(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
int nr = sensor_attr->index;
struct it87_data *data = it87_update_device(dev);
return sprintf(buf,"%d\n", (data->fan_main_ctrl & (1 << nr)) ? 1 : 0);
}
static ssize_t show_pwm(struct device *dev, char *buf, int nr)
static ssize_t show_pwm(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
int nr = sensor_attr->index;
struct it87_data *data = it87_update_device(dev);
return sprintf(buf,"%d\n", data->manual_pwm_ctl[nr]);
}
static ssize_t set_fan_min(struct device *dev, const char *buf,
size_t count, int nr)
static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
int nr = sensor_attr->index;
struct i2c_client *client = to_i2c_client(dev);
struct it87_data *data = i2c_get_clientdata(client);
int val = simple_strtol(buf, NULL, 10);
@ -510,9 +518,12 @@ static ssize_t set_fan_min(struct device *dev, const char *buf,
up(&data->update_lock);
return count;
}
static ssize_t set_fan_div(struct device *dev, const char *buf,
size_t count, int nr)
static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
int nr = sensor_attr->index;
struct i2c_client *client = to_i2c_client(dev);
struct it87_data *data = i2c_get_clientdata(client);
int val = simple_strtol(buf, NULL, 10);
@ -550,9 +561,12 @@ static ssize_t set_fan_div(struct device *dev, const char *buf,
up(&data->update_lock);
return count;
}
static ssize_t set_pwm_enable(struct device *dev, const char *buf,
size_t count, int nr)
static ssize_t set_pwm_enable(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
int nr = sensor_attr->index;
struct i2c_client *client = to_i2c_client(dev);
struct it87_data *data = i2c_get_clientdata(client);
int val = simple_strtol(buf, NULL, 10);
@ -581,9 +595,12 @@ static ssize_t set_pwm_enable(struct device *dev, const char *buf,
up(&data->update_lock);
return count;
}
static ssize_t set_pwm(struct device *dev, const char *buf,
size_t count, int nr)
static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
int nr = sensor_attr->index;
struct i2c_client *client = to_i2c_client(dev);
struct it87_data *data = i2c_get_clientdata(client);
int val = simple_strtol(buf, NULL, 10);
@ -599,64 +616,23 @@ static ssize_t set_pwm(struct device *dev, const char *buf,
return count;
}
#define show_fan_offset(offset) \
static ssize_t show_fan_##offset (struct device *dev, struct device_attribute *attr, char *buf) \
{ \
return show_fan(dev, buf, offset - 1); \
} \
static ssize_t show_fan_##offset##_min (struct device *dev, struct device_attribute *attr, char *buf) \
{ \
return show_fan_min(dev, buf, offset - 1); \
} \
static ssize_t show_fan_##offset##_div (struct device *dev, struct device_attribute *attr, char *buf) \
{ \
return show_fan_div(dev, buf, offset - 1); \
} \
static ssize_t set_fan_##offset##_min (struct device *dev, struct device_attribute *attr, \
const char *buf, size_t count) \
{ \
return set_fan_min(dev, buf, count, offset - 1); \
} \
static ssize_t set_fan_##offset##_div (struct device *dev, struct device_attribute *attr, \
const char *buf, size_t count) \
{ \
return set_fan_div(dev, buf, count, offset - 1); \
} \
static DEVICE_ATTR(fan##offset##_input, S_IRUGO, show_fan_##offset, NULL); \
static DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \
show_fan_##offset##_min, set_fan_##offset##_min); \
static DEVICE_ATTR(fan##offset##_div, S_IRUGO | S_IWUSR, \
show_fan_##offset##_div, set_fan_##offset##_div);
#define show_fan_offset(offset) \
static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO, \
show_fan, NULL, offset - 1); \
static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \
show_fan_min, set_fan_min, offset - 1); \
static SENSOR_DEVICE_ATTR(fan##offset##_div, S_IRUGO | S_IWUSR, \
show_fan_div, set_fan_div, offset - 1);
show_fan_offset(1);
show_fan_offset(2);
show_fan_offset(3);
#define show_pwm_offset(offset) \
static ssize_t show_pwm##offset##_enable (struct device *dev, struct device_attribute *attr, \
char *buf) \
{ \
return show_pwm_enable(dev, buf, offset - 1); \
} \
static ssize_t show_pwm##offset (struct device *dev, struct device_attribute *attr, char *buf) \
{ \
return show_pwm(dev, buf, offset - 1); \
} \
static ssize_t set_pwm##offset##_enable (struct device *dev, struct device_attribute *attr, \
const char *buf, size_t count) \
{ \
return set_pwm_enable(dev, buf, count, offset - 1); \
} \
static ssize_t set_pwm##offset (struct device *dev, struct device_attribute *attr, \
const char *buf, size_t count) \
{ \
return set_pwm(dev, buf, count, offset - 1); \
} \
static DEVICE_ATTR(pwm##offset##_enable, S_IRUGO | S_IWUSR, \
show_pwm##offset##_enable, \
set_pwm##offset##_enable); \
static DEVICE_ATTR(pwm##offset, S_IRUGO | S_IWUSR, \
show_pwm##offset , set_pwm##offset );
static SENSOR_DEVICE_ATTR(pwm##offset##_enable, S_IRUGO | S_IWUSR, \
show_pwm_enable, set_pwm_enable, offset - 1); \
static SENSOR_DEVICE_ATTR(pwm##offset, S_IRUGO | S_IWUSR, \
show_pwm, set_pwm, offset - 1);
show_pwm_offset(1);
show_pwm_offset(2);
@ -666,7 +642,7 @@ show_pwm_offset(3);
static ssize_t show_alarms(struct device *dev, struct device_attribute *attr, char *buf)
{
struct it87_data *data = it87_update_device(dev);
return sprintf(buf,"%d\n", ALARMS_FROM_REG(data->alarms));
return sprintf(buf, "%u\n", data->alarms);
}
static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL);
@ -864,60 +840,60 @@ int it87_detect(struct i2c_adapter *adapter, int address, int kind)
it87_init_client(new_client, data);
/* Register sysfs hooks */
device_create_file(&new_client->dev, &dev_attr_in0_input);
device_create_file(&new_client->dev, &dev_attr_in1_input);
device_create_file(&new_client->dev, &dev_attr_in2_input);
device_create_file(&new_client->dev, &dev_attr_in3_input);
device_create_file(&new_client->dev, &dev_attr_in4_input);
device_create_file(&new_client->dev, &dev_attr_in5_input);
device_create_file(&new_client->dev, &dev_attr_in6_input);
device_create_file(&new_client->dev, &dev_attr_in7_input);
device_create_file(&new_client->dev, &dev_attr_in8_input);
device_create_file(&new_client->dev, &dev_attr_in0_min);
device_create_file(&new_client->dev, &dev_attr_in1_min);
device_create_file(&new_client->dev, &dev_attr_in2_min);
device_create_file(&new_client->dev, &dev_attr_in3_min);
device_create_file(&new_client->dev, &dev_attr_in4_min);
device_create_file(&new_client->dev, &dev_attr_in5_min);
device_create_file(&new_client->dev, &dev_attr_in6_min);
device_create_file(&new_client->dev, &dev_attr_in7_min);
device_create_file(&new_client->dev, &dev_attr_in0_max);
device_create_file(&new_client->dev, &dev_attr_in1_max);
device_create_file(&new_client->dev, &dev_attr_in2_max);
device_create_file(&new_client->dev, &dev_attr_in3_max);
device_create_file(&new_client->dev, &dev_attr_in4_max);
device_create_file(&new_client->dev, &dev_attr_in5_max);
device_create_file(&new_client->dev, &dev_attr_in6_max);
device_create_file(&new_client->dev, &dev_attr_in7_max);
device_create_file(&new_client->dev, &dev_attr_temp1_input);
device_create_file(&new_client->dev, &dev_attr_temp2_input);
device_create_file(&new_client->dev, &dev_attr_temp3_input);
device_create_file(&new_client->dev, &dev_attr_temp1_max);
device_create_file(&new_client->dev, &dev_attr_temp2_max);
device_create_file(&new_client->dev, &dev_attr_temp3_max);
device_create_file(&new_client->dev, &dev_attr_temp1_min);
device_create_file(&new_client->dev, &dev_attr_temp2_min);
device_create_file(&new_client->dev, &dev_attr_temp3_min);
device_create_file(&new_client->dev, &dev_attr_temp1_type);
device_create_file(&new_client->dev, &dev_attr_temp2_type);
device_create_file(&new_client->dev, &dev_attr_temp3_type);
device_create_file(&new_client->dev, &dev_attr_fan1_input);
device_create_file(&new_client->dev, &dev_attr_fan2_input);
device_create_file(&new_client->dev, &dev_attr_fan3_input);
device_create_file(&new_client->dev, &dev_attr_fan1_min);
device_create_file(&new_client->dev, &dev_attr_fan2_min);
device_create_file(&new_client->dev, &dev_attr_fan3_min);
device_create_file(&new_client->dev, &dev_attr_fan1_div);
device_create_file(&new_client->dev, &dev_attr_fan2_div);
device_create_file(&new_client->dev, &dev_attr_fan3_div);
device_create_file(&new_client->dev, &sensor_dev_attr_in0_input.dev_attr);
device_create_file(&new_client->dev, &sensor_dev_attr_in1_input.dev_attr);
device_create_file(&new_client->dev, &sensor_dev_attr_in2_input.dev_attr);
device_create_file(&new_client->dev, &sensor_dev_attr_in3_input.dev_attr);
device_create_file(&new_client->dev, &sensor_dev_attr_in4_input.dev_attr);
device_create_file(&new_client->dev, &sensor_dev_attr_in5_input.dev_attr);
device_create_file(&new_client->dev, &sensor_dev_attr_in6_input.dev_attr);
device_create_file(&new_client->dev, &sensor_dev_attr_in7_input.dev_attr);
device_create_file(&new_client->dev, &sensor_dev_attr_in8_input.dev_attr);
device_create_file(&new_client->dev, &sensor_dev_attr_in0_min.dev_attr);
device_create_file(&new_client->dev, &sensor_dev_attr_in1_min.dev_attr);
device_create_file(&new_client->dev, &sensor_dev_attr_in2_min.dev_attr);
device_create_file(&new_client->dev, &sensor_dev_attr_in3_min.dev_attr);
device_create_file(&new_client->dev, &sensor_dev_attr_in4_min.dev_attr);
device_create_file(&new_client->dev, &sensor_dev_attr_in5_min.dev_attr);
device_create_file(&new_client->dev, &sensor_dev_attr_in6_min.dev_attr);
device_create_file(&new_client->dev, &sensor_dev_attr_in7_min.dev_attr);
device_create_file(&new_client->dev, &sensor_dev_attr_in0_max.dev_attr);
device_create_file(&new_client->dev, &sensor_dev_attr_in1_max.dev_attr);
device_create_file(&new_client->dev, &sensor_dev_attr_in2_max.dev_attr);
device_create_file(&new_client->dev, &sensor_dev_attr_in3_max.dev_attr);
device_create_file(&new_client->dev, &sensor_dev_attr_in4_max.dev_attr);
device_create_file(&new_client->dev, &sensor_dev_attr_in5_max.dev_attr);
device_create_file(&new_client->dev, &sensor_dev_attr_in6_max.dev_attr);
device_create_file(&new_client->dev, &sensor_dev_attr_in7_max.dev_attr);
device_create_file(&new_client->dev, &sensor_dev_attr_temp1_input.dev_attr);
device_create_file(&new_client->dev, &sensor_dev_attr_temp2_input.dev_attr);
device_create_file(&new_client->dev, &sensor_dev_attr_temp3_input.dev_attr);
device_create_file(&new_client->dev, &sensor_dev_attr_temp1_max.dev_attr);
device_create_file(&new_client->dev, &sensor_dev_attr_temp2_max.dev_attr);
device_create_file(&new_client->dev, &sensor_dev_attr_temp3_max.dev_attr);
device_create_file(&new_client->dev, &sensor_dev_attr_temp1_min.dev_attr);
device_create_file(&new_client->dev, &sensor_dev_attr_temp2_min.dev_attr);
device_create_file(&new_client->dev, &sensor_dev_attr_temp3_min.dev_attr);
device_create_file(&new_client->dev, &sensor_dev_attr_temp1_type.dev_attr);
device_create_file(&new_client->dev, &sensor_dev_attr_temp2_type.dev_attr);
device_create_file(&new_client->dev, &sensor_dev_attr_temp3_type.dev_attr);
device_create_file(&new_client->dev, &sensor_dev_attr_fan1_input.dev_attr);
device_create_file(&new_client->dev, &sensor_dev_attr_fan2_input.dev_attr);
device_create_file(&new_client->dev, &sensor_dev_attr_fan3_input.dev_attr);
device_create_file(&new_client->dev, &sensor_dev_attr_fan1_min.dev_attr);
device_create_file(&new_client->dev, &sensor_dev_attr_fan2_min.dev_attr);
device_create_file(&new_client->dev, &sensor_dev_attr_fan3_min.dev_attr);
device_create_file(&new_client->dev, &sensor_dev_attr_fan1_div.dev_attr);
device_create_file(&new_client->dev, &sensor_dev_attr_fan2_div.dev_attr);
device_create_file(&new_client->dev, &sensor_dev_attr_fan3_div.dev_attr);
device_create_file(&new_client->dev, &dev_attr_alarms);
if (enable_pwm_interface) {
device_create_file(&new_client->dev, &dev_attr_pwm1_enable);
device_create_file(&new_client->dev, &dev_attr_pwm2_enable);
device_create_file(&new_client->dev, &dev_attr_pwm3_enable);
device_create_file(&new_client->dev, &dev_attr_pwm1);
device_create_file(&new_client->dev, &dev_attr_pwm2);
device_create_file(&new_client->dev, &dev_attr_pwm3);
device_create_file(&new_client->dev, &sensor_dev_attr_pwm1_enable.dev_attr);
device_create_file(&new_client->dev, &sensor_dev_attr_pwm2_enable.dev_attr);
device_create_file(&new_client->dev, &sensor_dev_attr_pwm3_enable.dev_attr);
device_create_file(&new_client->dev, &sensor_dev_attr_pwm1.dev_attr);
device_create_file(&new_client->dev, &sensor_dev_attr_pwm2.dev_attr);
device_create_file(&new_client->dev, &sensor_dev_attr_pwm3.dev_attr);
}
if (data->type == it8712) {
@ -954,7 +930,7 @@ static int it87_detach_client(struct i2c_client *client)
return 0;
}
/* The SMBus locks itself, but ISA access must be locked explicitely!
/* The SMBus locks itself, but ISA access must be locked explicitly!
We don't want to lock the whole ISA bus, so we lock each client
separately.
We ignore the IT87 BUSY flag at this moment - it could lead to deadlocks,
@ -974,7 +950,7 @@ static int it87_read_value(struct i2c_client *client, u8 reg)
return i2c_smbus_read_byte_data(client, reg);
}
/* The SMBus locks itself, but ISA access muse be locked explicitely!
/* The SMBus locks itself, but ISA access muse be locked explicitly!
We don't want to lock the whole ISA bus, so we lock each client
separately.
We ignore the IT87 BUSY flag at this moment - it could lead to deadlocks,

262
drivers/i2c/chips/lm63.c
View File

@ -1,7 +1,7 @@
/*
* lm63.c - driver for the National Semiconductor LM63 temperature sensor
* with integrated fan control
* Copyright (C) 2004 Jean Delvare <khali@linux-fr.org>
* Copyright (C) 2004-2005 Jean Delvare <khali@linux-fr.org>
* Based on the lm90 driver.
*
* The LM63 is a sensor chip made by National Semiconductor. It measures
@ -37,13 +37,13 @@
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <linux/config.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/jiffies.h>
#include <linux/i2c.h>
#include <linux/i2c-sensor.h>
#include <linux/hwmon-sysfs.h>
/*
* Addresses to scan
@ -99,9 +99,9 @@ SENSORS_INSMOD_1(lm63);
* Conversions and various macros
* For tachometer counts, the LM63 uses 16-bit values.
* For local temperature and high limit, remote critical limit and hysteresis
* value, it uses signed 8-bit values with LSB = 1 degree Celcius.
* value, it uses signed 8-bit values with LSB = 1 degree Celsius.
* For remote temperature, low and high limits, it uses signed 11-bit values
* with LSB = 0.125 degree Celcius, left-justified in 16-bit registers.
* with LSB = 0.125 degree Celsius, left-justified in 16-bit registers.
*/
#define FAN_FROM_REG(reg) ((reg) == 0xFFFC || (reg) == 0 ? 0 : \
@ -158,16 +158,16 @@ struct lm63_data {
/* registers values */
u8 config, config_fan;
u16 fan1_input;
u16 fan1_low;
u16 fan[2]; /* 0: input
1: low limit */
u8 pwm1_freq;
u8 pwm1_value;
s8 temp1_input;
s8 temp1_high;
s16 temp2_input;
s16 temp2_high;
s16 temp2_low;
s8 temp2_crit;
s8 temp8[3]; /* 0: local input
1: local high limit
2: remote critical limit */
s16 temp11[3]; /* 0: remote input
1: remote low limit
2: remote high limit */
u8 temp2_crit_hyst;
u8 alarms;
};
@ -176,33 +176,33 @@ struct lm63_data {
* Sysfs callback functions and files
*/
#define show_fan(value) \
static ssize_t show_##value(struct device *dev, struct device_attribute *attr, char *buf) \
{ \
struct lm63_data *data = lm63_update_device(dev); \
return sprintf(buf, "%d\n", FAN_FROM_REG(data->value)); \
static ssize_t show_fan(struct device *dev, struct device_attribute *devattr,
char *buf)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct lm63_data *data = lm63_update_device(dev);
return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[attr->index]));
}
show_fan(fan1_input);
show_fan(fan1_low);
static ssize_t set_fan1_low(struct device *dev, struct device_attribute *attr, const char *buf,
size_t count)
static ssize_t set_fan(struct device *dev, struct device_attribute *dummy,
const char *buf, size_t count)
{
struct i2c_client *client = to_i2c_client(dev);
struct lm63_data *data = i2c_get_clientdata(client);
unsigned long val = simple_strtoul(buf, NULL, 10);
down(&data->update_lock);
data->fan1_low = FAN_TO_REG(val);
data->fan[1] = FAN_TO_REG(val);
i2c_smbus_write_byte_data(client, LM63_REG_TACH_LIMIT_LSB,
data->fan1_low & 0xFF);
data->fan[1] & 0xFF);
i2c_smbus_write_byte_data(client, LM63_REG_TACH_LIMIT_MSB,
data->fan1_low >> 8);
data->fan[1] >> 8);
up(&data->update_lock);
return count;
}
static ssize_t show_pwm1(struct device *dev, struct device_attribute *attr, char *buf)
static ssize_t show_pwm1(struct device *dev, struct device_attribute *dummy,
char *buf)
{
struct lm63_data *data = lm63_update_device(dev);
return sprintf(buf, "%d\n", data->pwm1_value >= 2 * data->pwm1_freq ?
@ -210,7 +210,8 @@ static ssize_t show_pwm1(struct device *dev, struct device_attribute *attr, char
(2 * data->pwm1_freq));
}
static ssize_t set_pwm1(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
static ssize_t set_pwm1(struct device *dev, struct device_attribute *dummy,
const char *buf, size_t count)
{
struct i2c_client *client = to_i2c_client(dev);
struct lm63_data *data = i2c_get_clientdata(client);
@ -229,77 +230,83 @@ static ssize_t set_pwm1(struct device *dev, struct device_attribute *attr, const
return count;
}
static ssize_t show_pwm1_enable(struct device *dev, struct device_attribute *attr, char *buf)
static ssize_t show_pwm1_enable(struct device *dev, struct device_attribute *dummy,
char *buf)
{
struct lm63_data *data = lm63_update_device(dev);
return sprintf(buf, "%d\n", data->config_fan & 0x20 ? 1 : 2);
}
#define show_temp8(value) \
static ssize_t show_##value(struct device *dev, struct device_attribute *attr, char *buf) \
{ \
struct lm63_data *data = lm63_update_device(dev); \
return sprintf(buf, "%d\n", TEMP8_FROM_REG(data->value)); \
static ssize_t show_temp8(struct device *dev, struct device_attribute *devattr,
char *buf)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct lm63_data *data = lm63_update_device(dev);
return sprintf(buf, "%d\n", TEMP8_FROM_REG(data->temp8[attr->index]));
}
#define show_temp11(value) \
static ssize_t show_##value(struct device *dev, struct device_attribute *attr, char *buf) \
{ \
struct lm63_data *data = lm63_update_device(dev); \
return sprintf(buf, "%d\n", TEMP11_FROM_REG(data->value)); \
}
show_temp8(temp1_input);
show_temp8(temp1_high);
show_temp11(temp2_input);
show_temp11(temp2_high);
show_temp11(temp2_low);
show_temp8(temp2_crit);
#define set_temp8(value, reg) \
static ssize_t set_##value(struct device *dev, struct device_attribute *attr, const char *buf, \
size_t count) \
{ \
struct i2c_client *client = to_i2c_client(dev); \
struct lm63_data *data = i2c_get_clientdata(client); \
long val = simple_strtol(buf, NULL, 10); \
\
down(&data->update_lock); \
data->value = TEMP8_TO_REG(val); \
i2c_smbus_write_byte_data(client, reg, data->value); \
up(&data->update_lock); \
return count; \
static ssize_t set_temp8(struct device *dev, struct device_attribute *dummy,
const char *buf, size_t count)
{
struct i2c_client *client = to_i2c_client(dev);
struct lm63_data *data = i2c_get_clientdata(client);
long val = simple_strtol(buf, NULL, 10);
down(&data->update_lock);
data->temp8[1] = TEMP8_TO_REG(val);
i2c_smbus_write_byte_data(client, LM63_REG_LOCAL_HIGH, data->temp8[1]);
up(&data->update_lock);
return count;
}
#define set_temp11(value, reg_msb, reg_lsb) \
static ssize_t set_##value(struct device *dev, struct device_attribute *attr, const char *buf, \
size_t count) \
{ \
struct i2c_client *client = to_i2c_client(dev); \
struct lm63_data *data = i2c_get_clientdata(client); \
long val = simple_strtol(buf, NULL, 10); \
\
down(&data->update_lock); \
data->value = TEMP11_TO_REG(val); \
i2c_smbus_write_byte_data(client, reg_msb, data->value >> 8); \
i2c_smbus_write_byte_data(client, reg_lsb, data->value & 0xff); \
up(&data->update_lock); \
return count; \
static ssize_t show_temp11(struct device *dev, struct device_attribute *devattr,
char *buf)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct lm63_data *data = lm63_update_device(dev);
return sprintf(buf, "%d\n", TEMP11_FROM_REG(data->temp11[attr->index]));
}
static ssize_t set_temp11(struct device *dev, struct device_attribute *devattr,
const char *buf, size_t count)
{
static const u8 reg[4] = {
LM63_REG_REMOTE_LOW_MSB,
LM63_REG_REMOTE_LOW_LSB,
LM63_REG_REMOTE_HIGH_MSB,
LM63_REG_REMOTE_HIGH_LSB,
};
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct i2c_client *client = to_i2c_client(dev);
struct lm63_data *data = i2c_get_clientdata(client);
long val = simple_strtol(buf, NULL, 10);
int nr = attr->index;
down(&data->update_lock);
data->temp11[nr] = TEMP11_TO_REG(val);
i2c_smbus_write_byte_data(client, reg[(nr - 1) * 2],
data->temp11[nr] >> 8);
i2c_smbus_write_byte_data(client, reg[(nr - 1) * 2 + 1],
data->temp11[nr] & 0xff);
up(&data->update_lock);
return count;
}
set_temp8(temp1_high, LM63_REG_LOCAL_HIGH);
set_temp11(temp2_high, LM63_REG_REMOTE_HIGH_MSB, LM63_REG_REMOTE_HIGH_LSB);
set_temp11(temp2_low, LM63_REG_REMOTE_LOW_MSB, LM63_REG_REMOTE_LOW_LSB);
/* Hysteresis register holds a relative value, while we want to present
an absolute to user-space */
static ssize_t show_temp2_crit_hyst(struct device *dev, struct device_attribute *attr, char *buf)
static ssize_t show_temp2_crit_hyst(struct device *dev, struct device_attribute *dummy,
char *buf)
{
struct lm63_data *data = lm63_update_device(dev);
return sprintf(buf, "%d\n", TEMP8_FROM_REG(data->temp2_crit)
return sprintf(buf, "%d\n", TEMP8_FROM_REG(data->temp8[2])
- TEMP8_FROM_REG(data->temp2_crit_hyst));
}
/* And now the other way around, user-space provides an absolute
hysteresis value and we have to store a relative one */
static ssize_t set_temp2_crit_hyst(struct device *dev, struct device_attribute *attr, const char *buf,
size_t count)
static ssize_t set_temp2_crit_hyst(struct device *dev, struct device_attribute *dummy,
const char *buf, size_t count)
{
struct i2c_client *client = to_i2c_client(dev);
struct lm63_data *data = i2c_get_clientdata(client);
@ -307,36 +314,37 @@ static ssize_t set_temp2_crit_hyst(struct device *dev, struct device_attribute *
long hyst;
down(&data->update_lock);
hyst = TEMP8_FROM_REG(data->temp2_crit) - val;
hyst = TEMP8_FROM_REG(data->temp8[2]) - val;
i2c_smbus_write_byte_data(client, LM63_REG_REMOTE_TCRIT_HYST,
HYST_TO_REG(hyst));
up(&data->update_lock);
return count;
}
static ssize_t show_alarms(struct device *dev, struct device_attribute *attr, char *buf)
static ssize_t show_alarms(struct device *dev, struct device_attribute *dummy,
char *buf)
{
struct lm63_data *data = lm63_update_device(dev);
return sprintf(buf, "%u\n", data->alarms);
}
static DEVICE_ATTR(fan1_input, S_IRUGO, show_fan1_input, NULL);
static DEVICE_ATTR(fan1_min, S_IWUSR | S_IRUGO, show_fan1_low,
set_fan1_low);
static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0);
static SENSOR_DEVICE_ATTR(fan1_min, S_IWUSR | S_IRUGO, show_fan,
set_fan, 1);
static DEVICE_ATTR(pwm1, S_IWUSR | S_IRUGO, show_pwm1, set_pwm1);
static DEVICE_ATTR(pwm1_enable, S_IRUGO, show_pwm1_enable, NULL);
static DEVICE_ATTR(temp1_input, S_IRUGO, show_temp1_input, NULL);
static DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO, show_temp1_high,
set_temp1_high);
static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_temp8, NULL, 0);
static SENSOR_DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO, show_temp8,
set_temp8, 1);
static DEVICE_ATTR(temp2_input, S_IRUGO, show_temp2_input, NULL);
static DEVICE_ATTR(temp2_min, S_IWUSR | S_IRUGO, show_temp2_low,
set_temp2_low);
static DEVICE_ATTR(temp2_max, S_IWUSR | S_IRUGO, show_temp2_high,
set_temp2_high);
static DEVICE_ATTR(temp2_crit, S_IRUGO, show_temp2_crit, NULL);
static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, show_temp11, NULL, 0);
static SENSOR_DEVICE_ATTR(temp2_min, S_IWUSR | S_IRUGO, show_temp11,
set_temp11, 1);
static SENSOR_DEVICE_ATTR(temp2_max, S_IWUSR | S_IRUGO, show_temp11,
set_temp11, 2);
static SENSOR_DEVICE_ATTR(temp2_crit, S_IRUGO, show_temp8, NULL, 2);
static DEVICE_ATTR(temp2_crit_hyst, S_IWUSR | S_IRUGO, show_temp2_crit_hyst,
set_temp2_crit_hyst);
@ -430,17 +438,25 @@ static int lm63_detect(struct i2c_adapter *adapter, int address, int kind)
/* Register sysfs hooks */
if (data->config & 0x04) { /* tachometer enabled */
device_create_file(&new_client->dev, &dev_attr_fan1_input);
device_create_file(&new_client->dev, &dev_attr_fan1_min);
device_create_file(&new_client->dev,
&sensor_dev_attr_fan1_input.dev_attr);
device_create_file(&new_client->dev,
&sensor_dev_attr_fan1_min.dev_attr);
}
device_create_file(&new_client->dev, &dev_attr_pwm1);
device_create_file(&new_client->dev, &dev_attr_pwm1_enable);
device_create_file(&new_client->dev, &dev_attr_temp1_input);
device_create_file(&new_client->dev, &dev_attr_temp2_input);
device_create_file(&new_client->dev, &dev_attr_temp2_min);
device_create_file(&new_client->dev, &dev_attr_temp1_max);
device_create_file(&new_client->dev, &dev_attr_temp2_max);
device_create_file(&new_client->dev, &dev_attr_temp2_crit);
device_create_file(&new_client->dev,
&sensor_dev_attr_temp1_input.dev_attr);
device_create_file(&new_client->dev,
&sensor_dev_attr_temp2_input.dev_attr);
device_create_file(&new_client->dev,
&sensor_dev_attr_temp2_min.dev_attr);
device_create_file(&new_client->dev,
&sensor_dev_attr_temp1_max.dev_attr);
device_create_file(&new_client->dev,
&sensor_dev_attr_temp2_max.dev_attr);
device_create_file(&new_client->dev,
&sensor_dev_attr_temp2_crit.dev_attr);
device_create_file(&new_client->dev, &dev_attr_temp2_crit_hyst);
device_create_file(&new_client->dev, &dev_attr_alarms);
@ -511,14 +527,14 @@ static struct lm63_data *lm63_update_device(struct device *dev)
if (time_after(jiffies, data->last_updated + HZ) || !data->valid) {
if (data->config & 0x04) { /* tachometer enabled */
/* order matters for fan1_input */
data->fan1_input = i2c_smbus_read_byte_data(client,
LM63_REG_TACH_COUNT_LSB) & 0xFC;
data->fan1_input |= i2c_smbus_read_byte_data(client,
LM63_REG_TACH_COUNT_MSB) << 8;
data->fan1_low = (i2c_smbus_read_byte_data(client,
LM63_REG_TACH_LIMIT_LSB) & 0xFC)
| (i2c_smbus_read_byte_data(client,
LM63_REG_TACH_LIMIT_MSB) << 8);
data->fan[0] = i2c_smbus_read_byte_data(client,
LM63_REG_TACH_COUNT_LSB) & 0xFC;
data->fan[0] |= i2c_smbus_read_byte_data(client,
LM63_REG_TACH_COUNT_MSB) << 8;
data->fan[1] = (i2c_smbus_read_byte_data(client,
LM63_REG_TACH_LIMIT_LSB) & 0xFC)
| (i2c_smbus_read_byte_data(client,
LM63_REG_TACH_LIMIT_MSB) << 8);
}
data->pwm1_freq = i2c_smbus_read_byte_data(client,
@ -528,26 +544,26 @@ static struct lm63_data *lm63_update_device(struct device *dev)
data->pwm1_value = i2c_smbus_read_byte_data(client,
LM63_REG_PWM_VALUE);
data->temp1_input = i2c_smbus_read_byte_data(client,
LM63_REG_LOCAL_TEMP);
data->temp1_high = i2c_smbus_read_byte_data(client,
LM63_REG_LOCAL_HIGH);
data->temp8[0] = i2c_smbus_read_byte_data(client,
LM63_REG_LOCAL_TEMP);
data->temp8[1] = i2c_smbus_read_byte_data(client,
LM63_REG_LOCAL_HIGH);
/* order matters for temp2_input */
data->temp2_input = i2c_smbus_read_byte_data(client,
LM63_REG_REMOTE_TEMP_MSB) << 8;
data->temp2_input |= i2c_smbus_read_byte_data(client,
LM63_REG_REMOTE_TEMP_LSB);
data->temp2_high = (i2c_smbus_read_byte_data(client,
LM63_REG_REMOTE_HIGH_MSB) << 8)
| i2c_smbus_read_byte_data(client,
LM63_REG_REMOTE_HIGH_LSB);
data->temp2_low = (i2c_smbus_read_byte_data(client,
data->temp11[0] = i2c_smbus_read_byte_data(client,
LM63_REG_REMOTE_TEMP_MSB) << 8;
data->temp11[0] |= i2c_smbus_read_byte_data(client,
LM63_REG_REMOTE_TEMP_LSB);
data->temp11[1] = (i2c_smbus_read_byte_data(client,
LM63_REG_REMOTE_LOW_MSB) << 8)
| i2c_smbus_read_byte_data(client,
LM63_REG_REMOTE_LOW_LSB);
data->temp2_crit = i2c_smbus_read_byte_data(client,
LM63_REG_REMOTE_TCRIT);
data->temp11[2] = (i2c_smbus_read_byte_data(client,
LM63_REG_REMOTE_HIGH_MSB) << 8)
| i2c_smbus_read_byte_data(client,
LM63_REG_REMOTE_HIGH_LSB);
data->temp8[2] = i2c_smbus_read_byte_data(client,
LM63_REG_REMOTE_TCRIT);
data->temp2_crit_hyst = i2c_smbus_read_byte_data(client,
LM63_REG_REMOTE_TCRIT_HYST);

1
drivers/i2c/chips/lm75.c
View File

@ -18,7 +18,6 @@
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <linux/config.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/slab.h>

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