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First round of new driver, new functionality and cleanups for IIO in the 4.4 cycle

Browse Source 
New device support
 * APDS9960 ALS + proximity driver
 * bmg160 SPI devices.
 * HDC100x humidity sensors
 * Holt HI-8435 threshold detector
 * mma8453Q accelerometer added to the mma8452 driver
 * mma86452FC and mma8653FC accelerometers added to the mma8452 driver
 * mxc4005 accelerometer
 * PulsedLight LIDAR
 * SensorTech VZ89x volatile organic compound sensor
 * UPISEMI uS5182d ALS and proximity sensors
 
 New core functionality
 * triggered events - use triggers to check for changes in threshold type
   detectors on devices with out interrupt support.  First user is the holt
   comparator.
 * chemical concentration and resistance channel types.
 
 New driver functionality
 * vf610
   - buffer support.
   - followup coccinelle warning fix.
 
 Core rework
 * buffers
   - break out callback buffer to own module.
   - move buffer implementations to a new subdirectory
 * percolate the error code form iio_event_getfd out to userspace
   rather than giving a missleading error later on.
 
 Cleanups
 * adddac drivers
   - use BIT macro where appropriate.
 * meter drivers
   - use BIT macro where appropriate.
 
 * ad7303
  - add an OF match table to line up with the binding docs.
 * adc128s052
   - add an OF match table to line up with the binding docs.
 * adf4350
   - add an OF match table to line up with the binding docs
 * as3935
   - add an OF match table to line up with the binding docs.
 * berlin2-adc
   - use GENMASK and BIT for masks
   - prevent attempting to sample multiple channels at once by moving a
     mutex scop
   - coding style cleanups
 * bmg150_magn
   - kconfig sort order was wrong - fix it.
 * bmg160
   - use i2c regmap and drop all uses of i2c_client
   - separate i2c and core driver
 * cc10001_adc
   - kconfig sort order was wrong - fix it.
 * evgen (dummy driver helper module)
   - move interrupt generation to irq_work to reduce differences between
     the dummy driver and real hardware drivers.
 * hmc5843
   - set the name dynamically rather than to a fixed value for one of the
     suported parts.
   - export module alias information to allow autoprobing of module.
 * lpc32xx
   - on failure to get resource or irq return -ENXIO as uppose to -EBUSY
 * max1027
   - set .of_match_table to actually allow OF style matching.
 * max5821
   - add MODULE_DEVICE_TABLE for OF table.
 * mma8452
   - refactor to separate out chip specific data.
   - add freefall / motion interrupt source for devices that do their
     interrupts slightly differently.
   - update copywrite notice.
   - leave naming of events directory in sysfs to the core
 * mcp320x
   - set .of_match_table so that it can be use for OF style matching.
 * mlx90614
   - Implement filter configuration (note the datasheet changed as a result
     of the driver reviews to include the values we needed ;)
 * opt3001
   - drop .owner field as assigned by platform driver core.
 * si7020
   - replace a bitmask on the humidity values with a more correct range
     check.
 * stk310
   - improved error handling.
   - use BIT macro where appropriate and use the resulting defines
     instead of magic numbers in the code.
   - fix indentation
 * st-sensors
   - add debugfs register read hook
 * tsl4531
   - fix error handling in check_id
 * twl6030
   - fix module autoload for OF
 * iio-trig-sysfs
   - document add and remove attribute
 * trigger in staging
   - code alignment fixes.
   - braces on both branches of if statement if needed for one.
 * xilinx-xadc
   - push interrupts into hardirq context as there isn't much in them
     any more and it avoids breaking PREEMPT_RT builds due to the use
     of a spinlock between the hardirq and the thread.
 
 Tools
 * event-monitor
   - report unsupported events.  We keep expanding what can come from drivers
     so give a helpful error if one turns up in an out of date userspace
     program.
 * generic-buffer
   - helpful message about needing to enable a channel to start the buffer.
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Merge tag 'iio-for-4.4a' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next

Jonathan writes:

First round of new driver, new functionality and cleanups for IIO in the 4.4 cycle

New device support
* APDS9960 ALS + proximity driver
* bmg160 SPI devices.
* HDC100x humidity sensors
* Holt HI-8435 threshold detector
* mma8453Q accelerometer added to the mma8452 driver
* mma86452FC and mma8653FC accelerometers added to the mma8452 driver
* mxc4005 accelerometer
* PulsedLight LIDAR
* SensorTech VZ89x volatile organic compound sensor
* UPISEMI uS5182d ALS and proximity sensors

New core functionality
* triggered events - use triggers to check for changes in threshold type
  detectors on devices with out interrupt support.  First user is the holt
  comparator.
* chemical concentration and resistance channel types.

New driver functionality
* vf610
  - buffer support.
  - followup coccinelle warning fix.

Core rework
* buffers
  - break out callback buffer to own module.
  - move buffer implementations to a new subdirectory
* percolate the error code form iio_event_getfd out to userspace
  rather than giving a missleading error later on.

Cleanups
* adddac drivers
  - use BIT macro where appropriate.
* meter drivers
  - use BIT macro where appropriate.

* ad7303
 - add an OF match table to line up with the binding docs.
* adc128s052
  - add an OF match table to line up with the binding docs.
* adf4350
  - add an OF match table to line up with the binding docs
* as3935
  - add an OF match table to line up with the binding docs.
* berlin2-adc
  - use GENMASK and BIT for masks
  - prevent attempting to sample multiple channels at once by moving a
    mutex scop
  - coding style cleanups
* bmg150_magn
  - kconfig sort order was wrong - fix it.
* bmg160
  - use i2c regmap and drop all uses of i2c_client
  - separate i2c and core driver
* cc10001_adc
  - kconfig sort order was wrong - fix it.
* evgen (dummy driver helper module)
  - move interrupt generation to irq_work to reduce differences between
    the dummy driver and real hardware drivers.
* hmc5843
  - set the name dynamically rather than to a fixed value for one of the
    suported parts.
  - export module alias information to allow autoprobing of module.
* lpc32xx
  - on failure to get resource or irq return -ENXIO as uppose to -EBUSY
* max1027
  - set .of_match_table to actually allow OF style matching.
* max5821
  - add MODULE_DEVICE_TABLE for OF table.
* mma8452
  - refactor to separate out chip specific data.
  - add freefall / motion interrupt source for devices that do their
    interrupts slightly differently.
  - update copywrite notice.
  - leave naming of events directory in sysfs to the core
* mcp320x
  - set .of_match_table so that it can be use for OF style matching.
* mlx90614
  - Implement filter configuration (note the datasheet changed as a result
    of the driver reviews to include the values we needed ;)
* opt3001
  - drop .owner field as assigned by platform driver core.
* si7020
  - replace a bitmask on the humidity values with a more correct range
    check.
* stk310
  - improved error handling.
  - use BIT macro where appropriate and use the resulting defines
    instead of magic numbers in the code.
  - fix indentation
* st-sensors
  - add debugfs register read hook
* tsl4531
  - fix error handling in check_id
* twl6030
  - fix module autoload for OF
* iio-trig-sysfs
  - document add and remove attribute
* trigger in staging
  - code alignment fixes.
  - braces on both branches of if statement if needed for one.
* xilinx-xadc
  - push interrupts into hardirq context as there isn't much in them
    any more and it avoids breaking PREEMPT_RT builds due to the use
    of a spinlock between the hardirq and the thread.

Tools
* event-monitor
  - report unsupported events.  We keep expanding what can come from drivers
    so give a helpful error if one turns up in an out of date userspace
    program.
* generic-buffer
  - helpful message about needing to enable a channel to start the buffer.
This commit is contained in:
Greg Kroah-Hartman 2015-09-30 03:37:48 +02:00
commit 9f827d8099
88 changed files with 5114 additions and 471 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

20
Documentation/ABI/testing/sysfs-bus-iio
View File

@ -581,6 +581,7 @@ What: /sys/.../iio:deviceX/events/in_voltageY_supply_thresh_rising_en
What: /sys/.../iio:deviceX/events/in_voltageY_supply_thresh_falling_en
What: /sys/.../iio:deviceX/events/in_voltageY_thresh_rising_en
What: /sys/.../iio:deviceX/events/in_voltageY_thresh_falling_en
What: /sys/.../iio:deviceX/events/in_voltageY_thresh_either_en
What: /sys/.../iio:deviceX/events/in_tempY_thresh_rising_en
What: /sys/.../iio:deviceX/events/in_tempY_thresh_falling_en
KernelVersion: 2.6.37
@ -1459,3 +1460,22 @@ Description:
measurements and return the average value as output data. Each
value resulted from <type>[_name]_oversampling_ratio measurements
is considered as one sample for <type>[_name]_sampling_frequency.
What: /sys/bus/iio/devices/iio:deviceX/in_concentration_raw
What: /sys/bus/iio/devices/iio:deviceX/in_concentrationX_raw
What: /sys/bus/iio/devices/iio:deviceX/in_concentration_co2_raw
What: /sys/bus/iio/devices/iio:deviceX/in_concentrationX_co2_raw
What: /sys/bus/iio/devices/iio:deviceX/in_concentration_voc_raw
What: /sys/bus/iio/devices/iio:deviceX/in_concentrationX_voc_raw
KernelVersion: 4.3
Contact: linux-iio@vger.kernel.org
Description:
Raw (unscaled no offset etc.) percentage reading of a substance.
What: /sys/bus/iio/devices/iio:deviceX/in_resistance_raw
What: /sys/bus/iio/devices/iio:deviceX/in_resistanceX_raw
KernelVersion: 4.3
Contact: linux-iio@vger.kernel.org
Description:
Raw (unscaled no offset etc.) resistance reading that can be processed
into an ohm value.

43
Documentation/ABI/testing/sysfs-bus-iio-adc-hi8435 Normal file
View File

@ -0,0 +1,43 @@
What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_sensing_mode
Date: August 2015
KernelVersion: 4.2.0
Contact: source@cogentembedded.com
Description:
Program sensor type for threshold detector inputs.
Could be either "GND-Open" or "Supply-Open" mode. Y is a
threshold detector input channel. Channels 0..7, 8..15, 16..23
and 24..31 has common sensor types.
What: /sys/bus/iio/devices/iio:deviceX/events/in_voltageY_thresh_falling_value
Date: August 2015
KernelVersion: 4.2.0
Contact: source@cogentembedded.com
Description:
Channel Y low voltage threshold. If sensor input voltage goes lower then
this value then the threshold falling event is pushed.
Depending on in_voltageY_sensing_mode the low voltage threshold
is separately set for "GND-Open" and "Supply-Open" modes.
Channels 0..31 have common low threshold values, but could have different
sensing_modes.
The low voltage threshold range is between 2..21V.
Hysteresis between low and high thresholds can not be lower then 2 and
can not be odd.
If falling threshold results hysteresis to odd value then rising
threshold is automatically subtracted by one.
What: /sys/bus/iio/devices/iio:deviceX/events/in_voltageY_thresh_rising_value
Date: August 2015
KernelVersion: 4.2.0
Contact: source@cogentembedded.com
Description:
Channel Y high voltage threshold. If sensor input voltage goes higher then
this value then the threshold rising event is pushed.
Depending on in_voltageY_sensing_mode the high voltage threshold
is separately set for "GND-Open" and "Supply-Open" modes.
Channels 0..31 have common high threshold values, but could have different
sensing_modes.
The high voltage threshold range is between 3..22V.
Hysteresis between low and high thresholds can not be lower then 2 and
can not be odd.
If rising threshold results hysteresis to odd value then falling
threshold is automatically appended by one.

7
Documentation/ABI/testing/sysfs-bus-iio-chemical-vz89x Normal file
View File

@ -0,0 +1,7 @@
What: /sys/bus/iio/devices/iio:deviceX/in_concentration_VOC_short_raw
Date: September 2015
KernelVersion: 4.3
Contact: Matt Ranostay <mranostay@gmail.com>
Description:
Get the raw calibration VOC value from the sensor.
This value has little application outside of calibration.

9
Documentation/ABI/testing/sysfs-bus-iio-humidity-hdc100x Normal file
View File

@ -0,0 +1,9 @@
What: /sys/bus/iio/devices/iio:deviceX/out_current_heater_raw
What: /sys/bus/iio/devices/iio:deviceX/out_current_heater_raw_available
KernelVersion: 4.3
Contact: linux-iio@vger.kernel.org
Description:
Controls the heater device within the humidity sensor to get
rid of excess condensation.
Valid control values are 0 = OFF, and 1 = ON.

22
Documentation/ABI/testing/sysfs-bus-iio-trigger-sysfs
View File

@ -18,3 +18,25 @@ Description:
trigger. In order to associate the trigger with an IIO device
one should write this name string to
/sys/bus/iio/devices/iio:deviceY/trigger/current_trigger.
What: /sys/bus/iio/devices/iio_sysfs_trigger/add_trigger
KernelVersion: 2.6.39
Contact: linux-iio@vger.kernel.org
Description:
This attribute is provided by the iio-trig-sysfs stand-alone
driver and it is used to activate the creation of a new trigger.
In order to achieve this, one should write a positive integer
into the associated file, which will serve as the id of the
trigger. If the trigger with the specified id is already present
in the system, an invalid argument message will be returned.
What: /sys/bus/iio/devices/iio_sysfs_trigger/remove_trigger
KernelVersion: 2.6.39
Contact: linux-iio@vger.kernel.org
Description:
This attribute is used to unregister and delete a previously
created trigger from the list of available triggers. In order to
achieve this, one should write a positive integer into the
associated file, representing the id of the trigger that needs
to be removed. If the trigger can't be found, an invalid
argument message will be returned to the user.

2
Documentation/DocBook/iio.tmpl
View File

@ -578,7 +578,7 @@
work together.
</para>
<sect2 id="iiotrigbufsetup"> <title> IIO triggered buffer setup</title>
!Edrivers/iio/industrialio-triggered-buffer.c
!Edrivers/iio/buffer/industrialio-triggered-buffer.c
!Finclude/linux/iio/iio.h iio_buffer_setup_ops

3
Documentation/devicetree/bindings/i2c/trivial-devices.txt
View File

@ -54,7 +54,6 @@ epson,rx8581 I2C-BUS INTERFACE REAL TIME CLOCK MODULE
fsl,mag3110 MAG3110: Xtrinsic High Accuracy, 3D Magnetometer
fsl,mc13892 MC13892: Power Management Integrated Circuit (PMIC) for i.MX35/51
fsl,mma8450 MMA8450Q: Xtrinsic Low-power, 3-axis Xtrinsic Accelerometer
fsl,mma8452 MMA8452Q: 3-axis 12-bit / 8-bit Digital Accelerometer
fsl,mpr121 MPR121: Proximity Capacitive Touch Sensor Controller
fsl,sgtl5000 SGTL5000: Ultra Low-Power Audio Codec
gmt,g751 G751: Digital Temperature Sensor and Thermal Watchdog with Two-Wire Interface
@ -80,6 +79,7 @@ oki,ml86v7667 OKI ML86V7667 video decoder
ovti,ov5642 OV5642: Color CMOS QSXGA (5-megapixel) Image Sensor with OmniBSI and Embedded TrueFocus
pericom,pt7c4338 Real-time Clock Module
plx,pex8648 48-Lane, 12-Port PCI Express Gen 2 (5.0 GT/s) Switch
pulsedlight,lidar-lite-v2 Pulsedlight LIDAR range-finding sensor
ramtron,24c64 i2c serial eeprom (24cxx)
ricoh,r2025sd I2C bus SERIAL INTERFACE REAL-TIME CLOCK IC
ricoh,r2221tl I2C bus SERIAL INTERFACE REAL-TIME CLOCK IC
@ -88,6 +88,7 @@ ricoh,rs5c372b I2C bus SERIAL INTERFACE REAL-TIME CLOCK IC
ricoh,rv5c386 I2C bus SERIAL INTERFACE REAL-TIME CLOCK IC
ricoh,rv5c387a I2C bus SERIAL INTERFACE REAL-TIME CLOCK IC
samsung,24ad0xd1 S524AD0XF1 (128K/256K-bit Serial EEPROM for Low Power)
sgx,vz89x SGX Sensortech VZ89X Sensors
sii,s35390a 2-wire CMOS real-time clock
skyworks,sky81452 Skyworks SKY81452: Six-Channel White LED Driver with Touch Panel Bias Supply
st-micro,24c256 i2c serial eeprom (24cxx)

24
Documentation/devicetree/bindings/iio/accel/mma8452.txt Normal file
View File

@ -0,0 +1,24 @@
Freescale MMA8452Q, MMA8453Q, MMA8652FC or MMA8653FC triaxial accelerometer
Required properties:
- compatible: should contain one of
* "fsl,mma8452"
* "fsl,mma8453"
* "fsl,mma8652"
* "fsl,mma8653"
- reg: the I2C address of the chip
Optional properties:
- interrupt-parent: should be the phandle for the interrupt controller
- interrupts: interrupt mapping for GPIO IRQ
Example:
mma8453fc@1d {
compatible = "fsl,mma8453";
reg = <0x1d>;
interrupt-parent = <&gpio1>;
interrupts = <5 0>;
};

21
Documentation/devicetree/bindings/iio/adc/hi8435.txt Normal file
View File

@ -0,0 +1,21 @@
Holt Integrated Circuits HI-8435 threshold detector bindings
Required properties:
- compatible: should be "holt,hi8435"
- reg: spi chip select number for the device
Recommended properties:
- spi-max-frequency: definition as per
Documentation/devicetree/bindings/spi/spi-bus.txt
Optional properties:
- gpios: GPIO used for controlling the reset pin
Example:
sensor@0 {
compatible = "holt,hi8435";
reg = <0>;
gpios = <&gpio6 1 0>;
spi-max-frequency = <1000000>;
};

22
Documentation/devicetree/bindings/iio/light/apds9960.txt Normal file
View File

@ -0,0 +1,22 @@
* Avago APDS9960 gesture/RGB/ALS/proximity sensor
http://www.avagotech.com/docs/AV02-4191EN
Required properties:
- compatible: must be "avago,apds9960"
- reg: the I2c address of the sensor
- interrupt-parent: should be the phandle for the interrupt controller
- interrupts : the sole interrupt generated by the device
Refer to interrupt-controller/interrupts.txt for generic interrupt client
node bindings.
Example:
apds9960@39 {
compatible = "avago,apds9960";
reg = <0x39>;
interrupt-parent = <&gpio1>;
interrupts = <16 1>;
};

34
Documentation/devicetree/bindings/iio/light/us5182d.txt Normal file
View File

@ -0,0 +1,34 @@
* UPISEMI us5182d I2C ALS and Proximity sensor
Required properties:
- compatible: must be "upisemi,usd5182"
- reg: the I2C address of the device
Optional properties:
- upisemi,glass-coef: glass attenuation factor - compensation factor of
resolution 1000 for material transmittance.
- upisemi,dark-ths: array of 8 elements containing 16-bit thresholds (adc
counts) corresponding to every scale.
- upisemi,upper-dark-gain: 8-bit dark gain compensation factor(4 int and 4
fractional bits - Q4.4) applied when light > threshold
- upisemi,lower-dark-gain: 8-bit dark gain compensation factor(4 int and 4
fractional bits - Q4.4) applied when light < threshold
If the optional properties are not specified these factors will default to the
values in the below example.
The glass-coef defaults to no compensation for the covering material.
The threshold array defaults to experimental values that work with US5182D
sensor on evaluation board - roughly between 12-32 lux.
There will be no dark-gain compensation by default when ALS > thresh
(0 * dark-gain), and a 1.35 compensation factor when ALS < thresh.
Example:
usd5182@39 {
compatible = "upisemi,usd5182";
reg = <0x39>;
upisemi,glass-coef = < 1000 >;
upisemi,dark-ths = /bits/ 16 <170 200 512 512 800 2000 4000 8000>;
upisemi,upper-dark-gain = /bits/ 8 <0x00>;
upisemi,lower-dark-gain = /bits/ 8 <0x16>;
};

4
Documentation/devicetree/bindings/vendor-prefixes.txt
View File

@ -101,6 +101,7 @@ himax Himax Technologies, Inc.
hisilicon Hisilicon Limited.
hit Hitachi Ltd.
hitex Hitex Development Tools
holt Holt Integrated Circuits, Inc.
honeywell Honeywell
hp Hewlett Packard
i2se I2SE GmbH
@ -169,6 +170,7 @@ phytec PHYTEC Messtechnik GmbH
picochip Picochip Ltd
plathome Plat'Home Co., Ltd.
pixcir PIXCIR MICROELECTRONICS Co., Ltd
pulsedlight PulsedLight, Inc
powervr PowerVR (deprecated, use img)
qca Qualcomm Atheros, Inc.
qcom Qualcomm Technologies, Inc
@ -191,6 +193,7 @@ sbs Smart Battery System
schindler Schindler
seagate Seagate Technology PLC
semtech Semtech Corporation
sgx SGX Sensortech
sharp Sharp Corporation
sil Silicon Image
silabs Silicon Laboratories
@ -223,6 +226,7 @@ toshiba Toshiba Corporation
toumaz Toumaz
tplink TP-LINK Technologies Co., Ltd.
truly Truly Semiconductors Limited
upisemi uPI Semiconductor Corp.
usi Universal Scientific Industrial Co., Ltd.
v3 V3 Semiconductor
variscite Variscite Ltd.

7
MAINTAINERS
View File

@ -6918,6 +6918,13 @@ S: Supported
F: include/linux/mlx5/
F: drivers/infiniband/hw/mlx5/
MELEXIS MLX90614 DRIVER
M: Crt Mori <cmo@melexis.com>
L: linux-iio@vger.kernel.org
W: http://www.melexis.com
S: Supported
F: drivers/iio/temperature/mlx90614.c
MN88472 MEDIA DRIVER
M: Antti Palosaari <crope@iki.fi>
L: linux-media@vger.kernel.org

29
drivers/iio/Kconfig
View File

@ -19,27 +19,7 @@ config IIO_BUFFER
acquisition methods.
if IIO_BUFFER
config IIO_BUFFER_CB
bool "IIO callback buffer used for push in-kernel interfaces"
help
Should be selected by any drivers that do in-kernel push
usage. That is, those where the data is pushed to the consumer.
config IIO_KFIFO_BUF
tristate "Industrial I/O buffering based on kfifo"
help
A simple fifo based on kfifo. Note that this currently provides
no buffer events so it is up to userspace to work out how
often to read from the buffer.
config IIO_TRIGGERED_BUFFER
tristate
select IIO_TRIGGER
select IIO_KFIFO_BUF
help
Provides helper functions for setting up triggered buffers.
source "drivers/iio/buffer/Kconfig"
endif # IIO_BUFFER
config IIO_TRIGGER
@ -58,9 +38,16 @@ config IIO_CONSUMERS_PER_TRIGGER
This value controls the maximum number of consumers that a
given trigger may handle. Default is 2.
config IIO_TRIGGERED_EVENT
tristate
select IIO_TRIGGER
help
Provides helper functions for setting up triggered events.
source "drivers/iio/accel/Kconfig"
source "drivers/iio/adc/Kconfig"
source "drivers/iio/amplifiers/Kconfig"
source "drivers/iio/chemical/Kconfig"
source "drivers/iio/common/Kconfig"
source "drivers/iio/dac/Kconfig"
source "drivers/iio/frequency/Kconfig"

6
drivers/iio/Makefile
View File

@ -6,14 +6,14 @@ obj-$(CONFIG_IIO) += industrialio.o
industrialio-y := industrialio-core.o industrialio-event.o inkern.o
industrialio-$(CONFIG_IIO_BUFFER) += industrialio-buffer.o
industrialio-$(CONFIG_IIO_TRIGGER) += industrialio-trigger.o
industrialio-$(CONFIG_IIO_BUFFER_CB) += buffer_cb.o
obj-$(CONFIG_IIO_TRIGGERED_BUFFER) += industrialio-triggered-buffer.o
obj-$(CONFIG_IIO_KFIFO_BUF) += kfifo_buf.o
obj-$(CONFIG_IIO_TRIGGERED_EVENT) += industrialio-triggered-event.o
obj-y += accel/
obj-y += adc/
obj-y += amplifiers/
obj-y += buffer/
obj-y += chemical/
obj-y += common/
obj-y += dac/
obj-y += gyro/

19
drivers/iio/accel/Kconfig
View File

@ -100,13 +100,13 @@ config KXCJK1013
be called kxcjk-1013.
config MMA8452
tristate "Freescale MMA8452Q Accelerometer Driver"
tristate "Freescale MMA8452Q and similar Accelerometers Driver"
depends on I2C
select IIO_BUFFER
select IIO_TRIGGERED_BUFFER
help
Say yes here to build support for the Freescale MMA8452Q 3-axis
accelerometer.
Say yes here to build support for the following Freescale 3-axis
accelerometers: MMA8452Q, MMA8453Q, MMA8652FC, MMA8653FC.
To compile this driver as a module, choose M here: the module
will be called mma8452.
@ -137,6 +137,19 @@ config MMA9553
To compile this driver as a module, choose M here: the module
will be called mma9553.
config MXC4005
tristate "Memsic MXC4005XC 3-Axis Accelerometer Driver"
depends on I2C
select IIO_BUFFER
select IIO_TRIGGERED_BUFFER
select REGMAP_I2C
help
Say yes here to build support for the Memsic MXC4005XC 3-axis
accelerometer.
To compile this driver as a module, choose M. The module will be
called mxc4005.
config STK8312
tristate "Sensortek STK8312 3-Axis Accelerometer Driver"
depends on I2C

2
drivers/iio/accel/Makefile
View File

@ -14,6 +14,8 @@ obj-$(CONFIG_MMA9551_CORE) += mma9551_core.o
obj-$(CONFIG_MMA9551) += mma9551.o
obj-$(CONFIG_MMA9553) += mma9553.o
obj-$(CONFIG_MXC4005) += mxc4005.o
obj-$(CONFIG_STK8312) += stk8312.o
obj-$(CONFIG_STK8BA50) += stk8ba50.o

356
drivers/iio/accel/mma8452.c
View File

@ -1,6 +1,12 @@
/*
* mma8452.c - Support for Freescale MMA8452Q 3-axis 12-bit accelerometer
* mma8452.c - Support for following Freescale 3-axis accelerometers:
*
* MMA8452Q (12 bit)
* MMA8453Q (10 bit)
* MMA8652FC (12 bit)
* MMA8653FC (10 bit)
*
* Copyright 2015 Martin Kepplinger <martin.kepplinger@theobroma-systems.com>
* Copyright 2014 Peter Meerwald <pmeerw@pmeerw.net>
*
* This file is subject to the terms and conditions of version 2 of
@ -22,10 +28,11 @@
#include <linux/iio/triggered_buffer.h>
#include <linux/iio/events.h>
#include <linux/delay.h>
#include <linux/of_device.h>
#define MMA8452_STATUS 0x00
#define MMA8452_STATUS_DRDY (BIT(2) | BIT(1) | BIT(0))
#define MMA8452_OUT_X 0x01 /* MSB first, 12-bit */
#define MMA8452_OUT_X 0x01 /* MSB first */
#define MMA8452_OUT_Y 0x03
#define MMA8452_OUT_Z 0x05
#define MMA8452_INT_SRC 0x0c
@ -38,6 +45,16 @@
#define MMA8452_DATA_CFG_HPF_MASK BIT(4)
#define MMA8452_HP_FILTER_CUTOFF 0x0f
#define MMA8452_HP_FILTER_CUTOFF_SEL_MASK GENMASK(1, 0)
#define MMA8452_FF_MT_CFG 0x15
#define MMA8452_FF_MT_CFG_OAE BIT(6)
#define MMA8452_FF_MT_CFG_ELE BIT(7)
#define MMA8452_FF_MT_SRC 0x16
#define MMA8452_FF_MT_SRC_XHE BIT(1)
#define MMA8452_FF_MT_SRC_YHE BIT(3)
#define MMA8452_FF_MT_SRC_ZHE BIT(5)
#define MMA8452_FF_MT_THS 0x17
#define MMA8452_FF_MT_THS_MASK 0x7f
#define MMA8452_FF_MT_COUNT 0x18
#define MMA8452_TRANSIENT_CFG 0x1d
#define MMA8452_TRANSIENT_CFG_HPF_BYP BIT(0)
#define MMA8452_TRANSIENT_CFG_CHAN(chan) BIT(chan + 1)
@ -65,15 +82,65 @@
#define MMA8452_MAX_REG 0x31
#define MMA8452_INT_DRDY BIT(0)
#define MMA8452_INT_FF_MT BIT(2)
#define MMA8452_INT_TRANS BIT(5)
#define MMA8452_DEVICE_ID 0x2a
#define MMA8453_DEVICE_ID 0x3a
#define MMA8652_DEVICE_ID 0x4a
#define MMA8653_DEVICE_ID 0x5a
struct mma8452_data {
struct i2c_client *client;
struct mutex lock;
u8 ctrl_reg1;
u8 data_cfg;
const struct mma_chip_info *chip_info;
};
/**
* struct mma_chip_info - chip specific data for Freescale's accelerometers
* @chip_id: WHO_AM_I register's value
* @channels: struct iio_chan_spec matching the device's
* capabilities
* @num_channels: number of channels
* @mma_scales: scale factors for converting register values
* to m/s^2; 3 modes: 2g, 4g, 8g; 2 integers
* per mode: m/s^2 and micro m/s^2
* @ev_cfg: event config register address
* @ev_cfg_ele: latch bit in event config register
* @ev_cfg_chan_shift: number of the bit to enable events in X
* direction; in event config register
* @ev_src: event source register address
* @ev_src_xe: bit in event source register that indicates
* an event in X direction
* @ev_src_ye: bit in event source register that indicates
* an event in Y direction
* @ev_src_ze: bit in event source register that indicates
* an event in Z direction
* @ev_ths: event threshold register address
* @ev_ths_mask: mask for the threshold value
* @ev_count: event count (period) register address
*
* Since not all chips supported by the driver support comparing high pass
* filtered data for events (interrupts), different interrupt sources are
* used for different chips and the relevant registers are included here.
*/
struct mma_chip_info {
u8 chip_id;
const struct iio_chan_spec *channels;
int num_channels;
const int mma_scales[3][2];
u8 ev_cfg;
u8 ev_cfg_ele;
u8 ev_cfg_chan_shift;
u8 ev_src;
u8 ev_src_xe;
u8 ev_src_ye;
u8 ev_src_ze;
u8 ev_ths;
u8 ev_ths_mask;
u8 ev_count;
};
static int mma8452_drdy(struct mma8452_data *data)
@ -143,16 +210,6 @@ static const int mma8452_samp_freq[8][2] = {
{6, 250000}, {1, 560000}
};
/*
* Hardware has fullscale of -2G, -4G, -8G corresponding to raw value -2048
* The userspace interface uses m/s^2 and we declare micro units
* So scale factor is given by:
* g * N * 1000000 / 2048 for N = 2, 4, 8 and g = 9.80665
*/
static const int mma8452_scales[3][2] = {
{0, 9577}, {0, 19154}, {0, 38307}
};
/* Datasheet table 35 (step time vs sample frequency) */
static const int mma8452_transient_time_step_us[8] = {
1250,
@ -189,8 +246,11 @@ static ssize_t mma8452_show_scale_avail(struct device *dev,
struct device_attribute *attr,
char *buf)
{
return mma8452_show_int_plus_micros(buf, mma8452_scales,
ARRAY_SIZE(mma8452_scales));
struct mma8452_data *data = iio_priv(i2c_get_clientdata(
to_i2c_client(dev)));
return mma8452_show_int_plus_micros(buf, data->chip_info->mma_scales,
ARRAY_SIZE(data->chip_info->mma_scales));
}
static ssize_t mma8452_show_hp_cutoff_avail(struct device *dev,
@ -221,9 +281,8 @@ static int mma8452_get_samp_freq_index(struct mma8452_data *data,
static int mma8452_get_scale_index(struct mma8452_data *data, int val, int val2)
{
return mma8452_get_int_plus_micros_index(mma8452_scales,
ARRAY_SIZE(mma8452_scales),
val, val2);
return mma8452_get_int_plus_micros_index(data->chip_info->mma_scales,
ARRAY_SIZE(data->chip_info->mma_scales), val, val2);
}
static int mma8452_get_hp_filter_index(struct mma8452_data *data,
@ -270,14 +329,15 @@ static int mma8452_read_raw(struct iio_dev *indio_dev,
if (ret < 0)
return ret;
*val = sign_extend32(be16_to_cpu(buffer[chan->scan_index]) >> 4,
11);
*val = sign_extend32(be16_to_cpu(
buffer[chan->scan_index]) >> chan->scan_type.shift,
chan->scan_type.realbits - 1);
return IIO_VAL_INT;
case IIO_CHAN_INFO_SCALE:
i = data->data_cfg & MMA8452_DATA_CFG_FS_MASK;
*val = mma8452_scales[i][0];
*val2 = mma8452_scales[i][1];
*val = data->chip_info->mma_scales[i][0];
*val2 = data->chip_info->mma_scales[i][1];
return IIO_VAL_INT_PLUS_MICRO;
case IIO_CHAN_INFO_SAMP_FREQ:
@ -439,17 +499,17 @@ static int mma8452_read_thresh(struct iio_dev *indio_dev,
switch (info) {
case IIO_EV_INFO_VALUE:
ret = i2c_smbus_read_byte_data(data->client,
MMA8452_TRANSIENT_THS);
data->chip_info->ev_ths);
if (ret < 0)
return ret;
*val = ret & MMA8452_TRANSIENT_THS_MASK;
*val = ret & data->chip_info->ev_ths_mask;
return IIO_VAL_INT;
case IIO_EV_INFO_PERIOD:
ret = i2c_smbus_read_byte_data(data->client,
MMA8452_TRANSIENT_COUNT);
data->chip_info->ev_count);
if (ret < 0)
return ret;
@ -497,7 +557,8 @@ static int mma8452_write_thresh(struct iio_dev *indio_dev,
if (val < 0 || val > MMA8452_TRANSIENT_THS_MASK)
return -EINVAL;
return mma8452_change_config(data, MMA8452_TRANSIENT_THS, val);
return mma8452_change_config(data, data->chip_info->ev_ths,
val);
case IIO_EV_INFO_PERIOD:
steps = (val * USEC_PER_SEC + val2) /
@ -507,7 +568,7 @@ static int mma8452_write_thresh(struct iio_dev *indio_dev,
if (steps < 0 || steps > 0xff)
return -EINVAL;
return mma8452_change_config(data, MMA8452_TRANSIENT_COUNT,
return mma8452_change_config(data, data->chip_info->ev_count,
steps);
case IIO_EV_INFO_HIGH_PASS_FILTER_3DB:
@ -538,13 +599,15 @@ static int mma8452_read_event_config(struct iio_dev *indio_dev,
enum iio_event_direction dir)
{
struct mma8452_data *data = iio_priv(indio_dev);
const struct mma_chip_info *chip = data->chip_info;
int ret;
ret = i2c_smbus_read_byte_data(data->client, MMA8452_TRANSIENT_CFG);
ret = i2c_smbus_read_byte_data(data->client,
data->chip_info->ev_cfg);
if (ret < 0)
return ret;
return ret & MMA8452_TRANSIENT_CFG_CHAN(chan->scan_index) ? 1 : 0;
return !!(ret & BIT(chan->scan_index + chip->ev_cfg_chan_shift));
}
static int mma8452_write_event_config(struct iio_dev *indio_dev,
@ -554,20 +617,22 @@ static int mma8452_write_event_config(struct iio_dev *indio_dev,
int state)
{
struct mma8452_data *data = iio_priv(indio_dev);
const struct mma_chip_info *chip = data->chip_info;
int val;
val = i2c_smbus_read_byte_data(data->client, MMA8452_TRANSIENT_CFG);
val = i2c_smbus_read_byte_data(data->client, chip->ev_cfg);
if (val < 0)
return val;
if (state)
val |= MMA8452_TRANSIENT_CFG_CHAN(chan->scan_index);
val |= BIT(chan->scan_index + chip->ev_cfg_chan_shift);
else
val &= ~MMA8452_TRANSIENT_CFG_CHAN(chan->scan_index);
val &= ~BIT(chan->scan_index + chip->ev_cfg_chan_shift);
val |= MMA8452_TRANSIENT_CFG_ELE;
val |= chip->ev_cfg_ele;
val |= MMA8452_FF_MT_CFG_OAE;
return mma8452_change_config(data, MMA8452_TRANSIENT_CFG, val);
return mma8452_change_config(data, chip->ev_cfg, val);
}
static void mma8452_transient_interrupt(struct iio_dev *indio_dev)
@ -576,25 +641,25 @@ static void mma8452_transient_interrupt(struct iio_dev *indio_dev)
s64 ts = iio_get_time_ns();
int src;
src = i2c_smbus_read_byte_data(data->client, MMA8452_TRANSIENT_SRC);
src = i2c_smbus_read_byte_data(data->client, data->chip_info->ev_src);
if (src < 0)
return;
if (src & MMA8452_TRANSIENT_SRC_XTRANSE)
if (src & data->chip_info->ev_src_xe)
iio_push_event(indio_dev,
IIO_MOD_EVENT_CODE(IIO_ACCEL, 0, IIO_MOD_X,
IIO_EV_TYPE_MAG,
IIO_EV_DIR_RISING),
ts);
if (src & MMA8452_TRANSIENT_SRC_YTRANSE)
if (src & data->chip_info->ev_src_ye)
iio_push_event(indio_dev,
IIO_MOD_EVENT_CODE(IIO_ACCEL, 0, IIO_MOD_Y,
IIO_EV_TYPE_MAG,
IIO_EV_DIR_RISING),
ts);
if (src & MMA8452_TRANSIENT_SRC_ZTRANSE)
if (src & data->chip_info->ev_src_ze)
iio_push_event(indio_dev,
IIO_MOD_EVENT_CODE(IIO_ACCEL, 0, IIO_MOD_Z,
IIO_EV_TYPE_MAG,
@ -606,6 +671,7 @@ static irqreturn_t mma8452_interrupt(int irq, void *p)
{
struct iio_dev *indio_dev = p;
struct mma8452_data *data = iio_priv(indio_dev);
const struct mma_chip_info *chip = data->chip_info;
int ret = IRQ_NONE;
int src;
@ -618,7 +684,10 @@ static irqreturn_t mma8452_interrupt(int irq, void *p)
ret = IRQ_HANDLED;
}
if (src & MMA8452_INT_TRANS) {
if ((src & MMA8452_INT_TRANS &&
chip->ev_src == MMA8452_TRANSIENT_SRC) ||
(src & MMA8452_INT_FF_MT &&
chip->ev_src == MMA8452_FF_MT_SRC)) {
mma8452_transient_interrupt(indio_dev);
ret = IRQ_HANDLED;
}
@ -680,6 +749,16 @@ static const struct iio_event_spec mma8452_transient_event[] = {
},
};
static const struct iio_event_spec mma8452_motion_event[] = {
{
.type = IIO_EV_TYPE_MAG,
.dir = IIO_EV_DIR_RISING,
.mask_separate = BIT(IIO_EV_INFO_ENABLE),
.mask_shared_by_type = BIT(IIO_EV_INFO_VALUE) |
BIT(IIO_EV_INFO_PERIOD)
},
};
/*
* Threshold is configured in fixed 8G/127 steps regardless of
* currently selected scale for measurement.
@ -693,10 +772,9 @@ static struct attribute *mma8452_event_attributes[] = {
static struct attribute_group mma8452_event_attribute_group = {
.attrs = mma8452_event_attributes,
.name = "events",
};
#define MMA8452_CHANNEL(axis, idx) { \
#define MMA8452_CHANNEL(axis, idx, bits) { \
.type = IIO_ACCEL, \
.modified = 1, \
.channel2 = IIO_MOD_##axis, \
@ -708,22 +786,144 @@ static struct attribute_group mma8452_event_attribute_group = {
.scan_index = idx, \
.scan_type = { \
.sign = 's', \
.realbits = 12, \
.realbits = (bits), \
.storagebits = 16, \
.shift = 4, \
.shift = 16 - (bits), \
.endianness = IIO_BE, \
}, \
.event_spec = mma8452_transient_event, \
.num_event_specs = ARRAY_SIZE(mma8452_transient_event), \
}
#define MMA8652_CHANNEL(axis, idx, bits) { \
.type = IIO_ACCEL, \
.modified = 1, \
.channel2 = IIO_MOD_##axis, \
.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | \
BIT(IIO_CHAN_INFO_CALIBBIAS), \
.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SAMP_FREQ) | \
BIT(IIO_CHAN_INFO_SCALE), \
.scan_index = idx, \
.scan_type = { \
.sign = 's', \
.realbits = (bits), \
.storagebits = 16, \
.shift = 16 - (bits), \
.endianness = IIO_BE, \
}, \
.event_spec = mma8452_motion_event, \
.num_event_specs = ARRAY_SIZE(mma8452_motion_event), \
}
static const struct iio_chan_spec mma8452_channels[] = {
MMA8452_CHANNEL(X, 0),
MMA8452_CHANNEL(Y, 1),
MMA8452_CHANNEL(Z, 2),
MMA8452_CHANNEL(X, 0, 12),
MMA8452_CHANNEL(Y, 1, 12),
MMA8452_CHANNEL(Z, 2, 12),
IIO_CHAN_SOFT_TIMESTAMP(3),
};
static const struct iio_chan_spec mma8453_channels[] = {
MMA8452_CHANNEL(X, 0, 10),
MMA8452_CHANNEL(Y, 1, 10),
MMA8452_CHANNEL(Z, 2, 10),
IIO_CHAN_SOFT_TIMESTAMP(3),
};
static const struct iio_chan_spec mma8652_channels[] = {
MMA8652_CHANNEL(X, 0, 12),
MMA8652_CHANNEL(Y, 1, 12),
MMA8652_CHANNEL(Z, 2, 12),
IIO_CHAN_SOFT_TIMESTAMP(3),
};
static const struct iio_chan_spec mma8653_channels[] = {
MMA8652_CHANNEL(X, 0, 10),
MMA8652_CHANNEL(Y, 1, 10),
MMA8652_CHANNEL(Z, 2, 10),
IIO_CHAN_SOFT_TIMESTAMP(3),
};
enum {
mma8452,
mma8453,
mma8652,
mma8653,
};
static const struct mma_chip_info mma_chip_info_table[] = {
[mma8452] = {
.chip_id = MMA8452_DEVICE_ID,
.channels = mma8452_channels,
.num_channels = ARRAY_SIZE(mma8452_channels),
/*
* Hardware has fullscale of -2G, -4G, -8G corresponding to
* raw value -2048 for 12 bit or -512 for 10 bit.
* The userspace interface uses m/s^2 and we declare micro units
* So scale factor for 12 bit here is given by:
* g * N * 1000000 / 2048 for N = 2, 4, 8 and g=9.80665
*/
.mma_scales = { {0, 9577}, {0, 19154}, {0, 38307} },
.ev_cfg = MMA8452_TRANSIENT_CFG,
.ev_cfg_ele = MMA8452_TRANSIENT_CFG_ELE,
.ev_cfg_chan_shift = 1,
.ev_src = MMA8452_TRANSIENT_SRC,
.ev_src_xe = MMA8452_TRANSIENT_SRC_XTRANSE,
.ev_src_ye = MMA8452_TRANSIENT_SRC_YTRANSE,
.ev_src_ze = MMA8452_TRANSIENT_SRC_ZTRANSE,
.ev_ths = MMA8452_TRANSIENT_THS,
.ev_ths_mask = MMA8452_TRANSIENT_THS_MASK,
.ev_count = MMA8452_TRANSIENT_COUNT,
},
[mma8453] = {
.chip_id = MMA8453_DEVICE_ID,
.channels = mma8453_channels,
.num_channels = ARRAY_SIZE(mma8453_channels),
.mma_scales = { {0, 38307}, {0, 76614}, {0, 153228} },
.ev_cfg = MMA8452_TRANSIENT_CFG,
.ev_cfg_ele = MMA8452_TRANSIENT_CFG_ELE,
.ev_cfg_chan_shift = 1,
.ev_src = MMA8452_TRANSIENT_SRC,
.ev_src_xe = MMA8452_TRANSIENT_SRC_XTRANSE,
.ev_src_ye = MMA8452_TRANSIENT_SRC_YTRANSE,
.ev_src_ze = MMA8452_TRANSIENT_SRC_ZTRANSE,
.ev_ths = MMA8452_TRANSIENT_THS,
.ev_ths_mask = MMA8452_TRANSIENT_THS_MASK,
.ev_count = MMA8452_TRANSIENT_COUNT,
},
[mma8652] = {
.chip_id = MMA8652_DEVICE_ID,
.channels = mma8652_channels,
.num_channels = ARRAY_SIZE(mma8652_channels),
.mma_scales = { {0, 9577}, {0, 19154}, {0, 38307} },
.ev_cfg = MMA8452_FF_MT_CFG,
.ev_cfg_ele = MMA8452_FF_MT_CFG_ELE,
.ev_cfg_chan_shift = 3,
.ev_src = MMA8452_FF_MT_SRC,
.ev_src_xe = MMA8452_FF_MT_SRC_XHE,
.ev_src_ye = MMA8452_FF_MT_SRC_YHE,
.ev_src_ze = MMA8452_FF_MT_SRC_ZHE,
.ev_ths = MMA8452_FF_MT_THS,
.ev_ths_mask = MMA8452_FF_MT_THS_MASK,
.ev_count = MMA8452_FF_MT_COUNT,
},
[mma8653] = {
.chip_id = MMA8653_DEVICE_ID,
.channels = mma8653_channels,
.num_channels = ARRAY_SIZE(mma8653_channels),
.mma_scales = { {0, 38307}, {0, 76614}, {0, 153228} },
.ev_cfg = MMA8452_FF_MT_CFG,
.ev_cfg_ele = MMA8452_FF_MT_CFG_ELE,
.ev_cfg_chan_shift = 3,
.ev_src = MMA8452_FF_MT_SRC,
.ev_src_xe = MMA8452_FF_MT_SRC_XHE,
.ev_src_ye = MMA8452_FF_MT_SRC_YHE,
.ev_src_ze = MMA8452_FF_MT_SRC_ZHE,
.ev_ths = MMA8452_FF_MT_THS,
.ev_ths_mask = MMA8452_FF_MT_THS_MASK,
.ev_count = MMA8452_FF_MT_COUNT,
},
};
static struct attribute *mma8452_attributes[] = {
&iio_dev_attr_sampling_frequency_available.dev_attr.attr,
&iio_dev_attr_in_accel_scale_available.dev_attr.attr,
@ -841,18 +1041,28 @@ static int mma8452_reset(struct i2c_client *client)
return -ETIMEDOUT;
}
static const struct of_device_id mma8452_dt_ids[] = {
{ .compatible = "fsl,mma8452", .data = &mma_chip_info_table[mma8452] },
{ .compatible = "fsl,mma8453", .data = &mma_chip_info_table[mma8453] },
{ .compatible = "fsl,mma8652", .data = &mma_chip_info_table[mma8652] },
{ .compatible = "fsl,mma8653", .data = &mma_chip_info_table[mma8653] },
{ }
};
MODULE_DEVICE_TABLE(of, mma8452_dt_ids);
static int mma8452_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct mma8452_data *data;
struct iio_dev *indio_dev;
int ret;
const struct of_device_id *match;
ret = i2c_smbus_read_byte_data(client, MMA8452_WHO_AM_I);
if (ret < 0)
return ret;
if (ret != MMA8452_DEVICE_ID)
match = of_match_device(mma8452_dt_ids, &client->dev);
if (!match) {
dev_err(&client->dev, "unknown device model\n");
return -ENODEV;
}
indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data));
if (!indio_dev)
@ -861,14 +1071,33 @@ static int mma8452_probe(struct i2c_client *client,
data = iio_priv(indio_dev);
data->client = client;
mutex_init(&data->lock);
data->chip_info = match->data;
ret = i2c_smbus_read_byte_data(client, MMA8452_WHO_AM_I);
if (ret < 0)
return ret;
switch (ret) {
case MMA8452_DEVICE_ID:
case MMA8453_DEVICE_ID:
case MMA8652_DEVICE_ID:
case MMA8653_DEVICE_ID:
if (ret == data->chip_info->chip_id)
break;
default:
return -ENODEV;
}
dev_info(&client->dev, "registering %s accelerometer; ID 0x%x\n",
match->compatible, data->chip_info->chip_id);
i2c_set_clientdata(client, indio_dev);
indio_dev->info = &mma8452_info;
indio_dev->name = id->name;
indio_dev->dev.parent = &client->dev;
indio_dev->modes = INDIO_DIRECT_MODE;
indio_dev->channels = mma8452_channels;
indio_dev->num_channels = ARRAY_SIZE(mma8452_channels);
indio_dev->channels = data->chip_info->channels;
indio_dev->num_channels = data->chip_info->num_channels;
indio_dev->available_scan_masks = mma8452_scan_masks;
ret = mma8452_reset(client);
@ -892,13 +1121,15 @@ static int mma8452_probe(struct i2c_client *client,
if (client->irq) {
/*
* Although we enable the transient interrupt source once and
* for all here the transient event detection itself is not
* enabled until userspace asks for it by
* mma8452_write_event_config()
* Although we enable the interrupt sources once and for
* all here the event detection itself is not enabled until
* userspace asks for it by mma8452_write_event_config()
*/
int supported_interrupts = MMA8452_INT_DRDY | MMA8452_INT_TRANS;
int enabled_interrupts = MMA8452_INT_TRANS;
int supported_interrupts = MMA8452_INT_DRDY |
MMA8452_INT_TRANS |
MMA8452_INT_FF_MT;
int enabled_interrupts = MMA8452_INT_TRANS |
MMA8452_INT_FF_MT;
/* Assume wired to INT1 pin */
ret = i2c_smbus_write_byte_data(client,
@ -987,17 +1218,14 @@ static SIMPLE_DEV_PM_OPS(mma8452_pm_ops, mma8452_suspend, mma8452_resume);
#endif
static const struct i2c_device_id mma8452_id[] = {
{ "mma8452", 0 },
{ "mma8452", mma8452 },
{ "mma8453", mma8453 },
{ "mma8652", mma8652 },
{ "mma8653", mma8653 },
{ }
};
MODULE_DEVICE_TABLE(i2c, mma8452_id);
static const struct of_device_id mma8452_dt_ids[] = {
{ .compatible = "fsl,mma8452" },
{ }
};
MODULE_DEVICE_TABLE(of, mma8452_dt_ids);
static struct i2c_driver mma8452_driver = {
.driver = {
.name = "mma8452",

567
drivers/iio/accel/mxc4005.c Normal file
View File

@ -0,0 +1,567 @@
/*
* 3-axis accelerometer driver for MXC4005XC Memsic sensor
*
* Copyright (c) 2014, Intel Corporation.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope 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.
*/
#include <linux/module.h>
#include <linux/i2c.h>
#include <linux/iio/iio.h>
#include <linux/acpi.h>
#include <linux/gpio/consumer.h>
#include <linux/regmap.h>
#include <linux/iio/sysfs.h>
#include <linux/iio/trigger.h>
#include <linux/iio/buffer.h>
#include <linux/iio/triggered_buffer.h>
#include <linux/iio/trigger_consumer.h>
#define MXC4005_DRV_NAME "mxc4005"
#define MXC4005_IRQ_NAME "mxc4005_event"
#define MXC4005_REGMAP_NAME "mxc4005_regmap"
#define MXC4005_REG_XOUT_UPPER 0x03
#define MXC4005_REG_XOUT_LOWER 0x04
#define MXC4005_REG_YOUT_UPPER 0x05
#define MXC4005_REG_YOUT_LOWER 0x06
#define MXC4005_REG_ZOUT_UPPER 0x07
#define MXC4005_REG_ZOUT_LOWER 0x08
#define MXC4005_REG_INT_MASK1 0x0B
#define MXC4005_REG_INT_MASK1_BIT_DRDYE 0x01
#define MXC4005_REG_INT_CLR1 0x01
#define MXC4005_REG_INT_CLR1_BIT_DRDYC 0x01
#define MXC4005_REG_CONTROL 0x0D
#define MXC4005_REG_CONTROL_MASK_FSR GENMASK(6, 5)
#define MXC4005_CONTROL_FSR_SHIFT 5
#define MXC4005_REG_DEVICE_ID 0x0E
enum mxc4005_axis {
AXIS_X,
AXIS_Y,
AXIS_Z,
};
enum mxc4005_range {
MXC4005_RANGE_2G,
MXC4005_RANGE_4G,
MXC4005_RANGE_8G,
};
struct mxc4005_data {
struct device *dev;
struct mutex mutex;
struct regmap *regmap;
struct iio_trigger *dready_trig;
__be16 buffer[8];
bool trigger_enabled;
};
/*
* MXC4005 can operate in the following ranges:
* +/- 2G, 4G, 8G (the default +/-2G)
*
* (2 + 2) * 9.81 / (2^12 - 1) = 0.009582
* (4 + 4) * 9.81 / (2^12 - 1) = 0.019164
* (8 + 8) * 9.81 / (2^12 - 1) = 0.038329
*/
static const struct {
u8 range;
int scale;
} mxc4005_scale_table[] = {
{MXC4005_RANGE_2G, 9582},
{MXC4005_RANGE_4G, 19164},
{MXC4005_RANGE_8G, 38329},
};
static IIO_CONST_ATTR(in_accel_scale_available, "0.009582 0.019164 0.038329");
static struct attribute *mxc4005_attributes[] = {
&iio_const_attr_in_accel_scale_available.dev_attr.attr,
NULL,
};
static const struct attribute_group mxc4005_attrs_group = {
.attrs = mxc4005_attributes,
};
static bool mxc4005_is_readable_reg(struct device *dev, unsigned int reg)
{
switch (reg) {
case MXC4005_REG_XOUT_UPPER:
case MXC4005_REG_XOUT_LOWER:
case MXC4005_REG_YOUT_UPPER:
case MXC4005_REG_YOUT_LOWER:
case MXC4005_REG_ZOUT_UPPER:
case MXC4005_REG_ZOUT_LOWER:
case MXC4005_REG_DEVICE_ID:
case MXC4005_REG_CONTROL:
return true;
default:
return false;
}
}
static bool mxc4005_is_writeable_reg(struct device *dev, unsigned int reg)
{
switch (reg) {
case MXC4005_REG_INT_CLR1:
case MXC4005_REG_INT_MASK1:
case MXC4005_REG_CONTROL:
return true;
default:
return false;
}
}
static const struct regmap_config mxc4005_regmap_config = {
.name = MXC4005_REGMAP_NAME,
.reg_bits = 8,
.val_bits = 8,
.max_register = MXC4005_REG_DEVICE_ID,
.readable_reg = mxc4005_is_readable_reg,
.writeable_reg = mxc4005_is_writeable_reg,
};
static int mxc4005_read_xyz(struct mxc4005_data *data)
{
int ret;
ret = regmap_bulk_read(data->regmap, MXC4005_REG_XOUT_UPPER,
(u8 *) data->buffer, sizeof(data->buffer));
if (ret < 0) {
dev_err(data->dev, "failed to read axes\n");
return ret;
}
return 0;
}
static int mxc4005_read_axis(struct mxc4005_data *data,
unsigned int addr)
{
__be16 reg;
int ret;
ret = regmap_bulk_read(data->regmap, addr, (u8 *) &reg, sizeof(reg));
if (ret < 0) {
dev_err(data->dev, "failed to read reg %02x\n", addr);
return ret;
}
return be16_to_cpu(reg);
}
static int mxc4005_read_scale(struct mxc4005_data *data)
{
unsigned int reg;
int ret;
int i;
ret = regmap_read(data->regmap, MXC4005_REG_CONTROL, &reg);
if (ret < 0) {
dev_err(data->dev, "failed to read reg_control\n");
return ret;
}
i = reg >> MXC4005_CONTROL_FSR_SHIFT;
if (i < 0 || i >= ARRAY_SIZE(mxc4005_scale_table))
return -EINVAL;
return mxc4005_scale_table[i].scale;
}
static int mxc4005_set_scale(struct mxc4005_data *data, int val)
{
unsigned int reg;
int i;
int ret;
for (i = 0; i < ARRAY_SIZE(mxc4005_scale_table); i++) {
if (mxc4005_scale_table[i].scale == val) {
reg = i << MXC4005_CONTROL_FSR_SHIFT;
ret = regmap_update_bits(data->regmap,
MXC4005_REG_CONTROL,
MXC4005_REG_CONTROL_MASK_FSR,
reg);
if (ret < 0)
dev_err(data->dev,
"failed to write reg_control\n");
return ret;
}
}
return -EINVAL;
}
static int mxc4005_read_raw(struct iio_dev *indio_dev,
struct iio_chan_spec const *chan,
int *val, int *val2, long mask)
{
struct mxc4005_data *data = iio_priv(indio_dev);
int ret;
switch (mask) {
case IIO_CHAN_INFO_RAW:
switch (chan->type) {
case IIO_ACCEL:
if (iio_buffer_enabled(indio_dev))
return -EBUSY;
ret = mxc4005_read_axis(data, chan->address);
if (ret < 0)
return ret;
*val = sign_extend32(ret >> chan->scan_type.shift,
chan->scan_type.realbits - 1);
return IIO_VAL_INT;
default:
return -EINVAL;
}
case IIO_CHAN_INFO_SCALE:
ret = mxc4005_read_scale(data);
if (ret < 0)
return ret;
*val = 0;
*val2 = ret;
return IIO_VAL_INT_PLUS_MICRO;
default:
return -EINVAL;
}
}
static int mxc4005_write_raw(struct iio_dev *indio_dev,
struct iio_chan_spec const *chan,
int val, int val2, long mask)
{
struct mxc4005_data *data = iio_priv(indio_dev);
switch (mask) {
case IIO_CHAN_INFO_SCALE:
if (val != 0)
return -EINVAL;
return mxc4005_set_scale(data, val2);
default:
return -EINVAL;
}
}
static const struct iio_info mxc4005_info = {
.driver_module = THIS_MODULE,
.read_raw = mxc4005_read_raw,
.write_raw = mxc4005_write_raw,
.attrs = &mxc4005_attrs_group,
};
static const unsigned long mxc4005_scan_masks[] = {
BIT(AXIS_X) | BIT(AXIS_Y) | BIT(AXIS_Z),
0
};
#define MXC4005_CHANNEL(_axis, _addr) { \
.type = IIO_ACCEL, \
.modified = 1, \
.channel2 = IIO_MOD_##_axis, \
.address = _addr, \
.info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \
.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), \
.scan_index = AXIS_##_axis, \
.scan_type = { \
.sign = 's', \
.realbits = 12, \
.storagebits = 16, \
.shift = 4, \
.endianness = IIO_BE, \
}, \
}
static const struct iio_chan_spec mxc4005_channels[] = {
MXC4005_CHANNEL(X, MXC4005_REG_XOUT_UPPER),
MXC4005_CHANNEL(Y, MXC4005_REG_YOUT_UPPER),
MXC4005_CHANNEL(Z, MXC4005_REG_ZOUT_UPPER),
IIO_CHAN_SOFT_TIMESTAMP(3),
};
static irqreturn_t mxc4005_trigger_handler(int irq, void *private)
{
struct iio_poll_func *pf = private;
struct iio_dev *indio_dev = pf->indio_dev;
struct mxc4005_data *data = iio_priv(indio_dev);
int ret;
ret = mxc4005_read_xyz(data);
if (ret < 0)
goto err;
iio_push_to_buffers_with_timestamp(indio_dev, data->buffer,
pf->timestamp);
err:
iio_trigger_notify_done(indio_dev->trig);
return IRQ_HANDLED;
}
static int mxc4005_clr_intr(struct mxc4005_data *data)
{
int ret;
/* clear interrupt */
ret = regmap_write(data->regmap, MXC4005_REG_INT_CLR1,
MXC4005_REG_INT_CLR1_BIT_DRDYC);
if (ret < 0) {
dev_err(data->dev, "failed to write to reg_int_clr1\n");
return ret;
}
return 0;
}
static int mxc4005_set_trigger_state(struct iio_trigger *trig,
bool state)
{
struct iio_dev *indio_dev = iio_trigger_get_drvdata(trig);
struct mxc4005_data *data = iio_priv(indio_dev);
int ret;
mutex_lock(&data->mutex);
if (state) {
ret = regmap_write(data->regmap, MXC4005_REG_INT_MASK1,
MXC4005_REG_INT_MASK1_BIT_DRDYE);
} else {
ret = regmap_write(data->regmap, MXC4005_REG_INT_MASK1,
~MXC4005_REG_INT_MASK1_BIT_DRDYE);
}
if (ret < 0) {
mutex_unlock(&data->mutex);
dev_err(data->dev, "failed to update reg_int_mask1");
return ret;
}
data->trigger_enabled = state;
mutex_unlock(&data->mutex);
return 0;
}
static int mxc4005_trigger_try_reen(struct iio_trigger *trig)
{
struct iio_dev *indio_dev = iio_trigger_get_drvdata(trig);
struct mxc4005_data *data = iio_priv(indio_dev);
if (!data->dready_trig)
return 0;
return mxc4005_clr_intr(data);
}
static const struct iio_trigger_ops mxc4005_trigger_ops = {
.set_trigger_state = mxc4005_set_trigger_state,
.try_reenable = mxc4005_trigger_try_reen,
.owner = THIS_MODULE,
};
static int mxc4005_gpio_probe(struct i2c_client *client,
struct mxc4005_data *data)
{
struct device *dev;
struct gpio_desc *gpio;
int ret;
if (!client)
return -EINVAL;
dev = &client->dev;
gpio = devm_gpiod_get_index(dev, "mxc4005_int", 0, GPIOD_IN);
if (IS_ERR(gpio)) {
dev_err(dev, "failed to get acpi gpio index\n");
return PTR_ERR(gpio);
}
ret = gpiod_to_irq(gpio);
dev_dbg(dev, "GPIO resource, no:%d irq:%d\n", desc_to_gpio(gpio), ret);
return ret;
}
static int mxc4005_chip_init(struct mxc4005_data *data)
{
int ret;
unsigned int reg;
ret = regmap_read(data->regmap, MXC4005_REG_DEVICE_ID, &reg);
if (ret < 0) {
dev_err(data->dev, "failed to read chip id\n");
return ret;
}
dev_dbg(data->dev, "MXC4005 chip id %02x\n", reg);
return 0;
}
static int mxc4005_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct mxc4005_data *data;
struct iio_dev *indio_dev;
struct regmap *regmap;
int ret;
indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data));
if (!indio_dev)
return -ENOMEM;
regmap = devm_regmap_init_i2c(client, &mxc4005_regmap_config);
if (IS_ERR(regmap)) {
dev_err(&client->dev, "failed to initialize regmap\n");
return PTR_ERR(regmap);
}
data = iio_priv(indio_dev);
i2c_set_clientdata(client, indio_dev);
data->dev = &client->dev;
data->regmap = regmap;
ret = mxc4005_chip_init(data);
if (ret < 0) {
dev_err(&client->dev, "failed to initialize chip\n");
return ret;
}
mutex_init(&data->mutex);
indio_dev->dev.parent = &client->dev;
indio_dev->channels = mxc4005_channels;
indio_dev->num_channels = ARRAY_SIZE(mxc4005_channels);
indio_dev->available_scan_masks = mxc4005_scan_masks;
indio_dev->name = MXC4005_DRV_NAME;
indio_dev->modes = INDIO_DIRECT_MODE;
indio_dev->info = &mxc4005_info;
ret = iio_triggered_buffer_setup(indio_dev,
iio_pollfunc_store_time,
mxc4005_trigger_handler,
NULL);
if (ret < 0) {
dev_err(&client->dev,
"failed to setup iio triggered buffer\n");
return ret;
}
if (client->irq < 0)
client->irq = mxc4005_gpio_probe(client, data);
if (client->irq > 0) {
data->dready_trig = devm_iio_trigger_alloc(&client->dev,
"%s-dev%d",
indio_dev->name,
indio_dev->id);
if (!data->dready_trig)
return -ENOMEM;
ret = devm_request_threaded_irq(&client->dev, client->irq,
iio_trigger_generic_data_rdy_poll,
NULL,
IRQF_TRIGGER_FALLING |
IRQF_ONESHOT,
MXC4005_IRQ_NAME,
data->dready_trig);
if (ret) {
dev_err(&client->dev,
"failed to init threaded irq\n");
goto err_buffer_cleanup;
}
data->dready_trig->dev.parent = &client->dev;
data->dready_trig->ops = &mxc4005_trigger_ops;
iio_trigger_set_drvdata(data->dready_trig, indio_dev);
indio_dev->trig = data->dready_trig;
iio_trigger_get(indio_dev->trig);
ret = iio_trigger_register(data->dready_trig);
if (ret) {
dev_err(&client->dev,
"failed to register trigger\n");
goto err_trigger_unregister;
}
}
ret = iio_device_register(indio_dev);
if (ret < 0) {
dev_err(&client->dev,
"unable to register iio device %d\n", ret);
goto err_buffer_cleanup;
}
return 0;
err_trigger_unregister:
iio_trigger_unregister(data->dready_trig);
err_buffer_cleanup:
iio_triggered_buffer_cleanup(indio_dev);
return ret;
}
static int mxc4005_remove(struct i2c_client *client)
{
struct iio_dev *indio_dev = i2c_get_clientdata(client);
struct mxc4005_data *data = iio_priv(indio_dev);
iio_device_unregister(indio_dev);
iio_triggered_buffer_cleanup(indio_dev);
if (data->dready_trig)
iio_trigger_unregister(data->dready_trig);
return 0;
}
static const struct acpi_device_id mxc4005_acpi_match[] = {
{"MXC4005", 0},
{ },
};
MODULE_DEVICE_TABLE(acpi, mxc4005_acpi_match);
static const struct i2c_device_id mxc4005_id[] = {
{"mxc4005", 0},
{ },
};
MODULE_DEVICE_TABLE(i2c, mxc4005_id);
static struct i2c_driver mxc4005_driver = {
.driver = {
.name = MXC4005_DRV_NAME,
.acpi_match_table = ACPI_PTR(mxc4005_acpi_match),
},
.probe = mxc4005_probe,
.remove = mxc4005_remove,
.id_table = mxc4005_id,
};
module_i2c_driver(mxc4005_driver);
MODULE_AUTHOR("Teodora Baluta <teodora.baluta@intel.com>");
MODULE_LICENSE("GPL v2");
MODULE_DESCRIPTION("MXC4005 3-axis accelerometer driver");

1
drivers/iio/accel/st_accel_core.c
View File

@ -618,6 +618,7 @@ static const struct iio_info accel_info = {
.attrs = &st_accel_attribute_group,
.read_raw = &st_accel_read_raw,
.write_raw = &st_accel_write_raw,
.debugfs_reg_access = &st_sensors_debugfs_reg_access,
};
#ifdef CONFIG_IIO_TRIGGER

35
drivers/iio/adc/Kconfig
View File

@ -149,6 +149,17 @@ config BERLIN2_ADC
Marvell Berlin2 ADC driver. This ADC has 8 channels, with one used for
temperature measurement.
config CC10001_ADC
tristate "Cosmic Circuits 10001 ADC driver"
depends on HAS_IOMEM && HAVE_CLK && REGULATOR
select IIO_BUFFER
select IIO_TRIGGERED_BUFFER
help
Say yes here to build support for Cosmic Circuits 10001 ADC.
This driver can also be built as a module. If so, the module will be
called cc10001_adc.
config DA9150_GPADC
tristate "Dialog DA9150 GPADC driver support"
depends on MFD_DA9150
@ -161,17 +172,6 @@ config DA9150_GPADC
To compile this driver as a module, choose M here: the module will be
called berlin2-adc.
config CC10001_ADC
tristate "Cosmic Circuits 10001 ADC driver"
depends on HAS_IOMEM && HAVE_CLK && REGULATOR
select IIO_BUFFER
select IIO_TRIGGERED_BUFFER
help
Say yes here to build support for Cosmic Circuits 10001 ADC.
This driver can also be built as a module. If so, the module will be
called cc10001_adc.
config EXYNOS_ADC
tristate "Exynos ADC driver support"
depends on ARCH_EXYNOS || ARCH_S3C24XX || ARCH_S3C64XX || (OF && COMPILE_TEST)
@ -183,6 +183,17 @@ config EXYNOS_ADC
To compile this driver as a module, choose M here: the module will be
called exynos_adc.
config HI8435
tristate "Holt Integrated Circuits HI-8435 threshold detector"
select IIO_TRIGGERED_EVENT
depends on SPI
help
If you say yes here you get support for Holt Integrated Circuits
HI-8435 chip.
This driver can also be built as a module. If so, the module will be
called hi8435.
config LP8788_ADC
tristate "LP8788 ADC driver"
depends on MFD_LP8788
@ -361,6 +372,8 @@ config TWL6030_GPADC
config VF610_ADC
tristate "Freescale vf610 ADC driver"
depends on OF
select IIO_BUFFER
select IIO_TRIGGERED_BUFFER
help
Say yes here to support for Vybrid board analog-to-digital converter.
Since the IP is used for i.MX6SLX, the driver also support i.MX6SLX.

3
drivers/iio/adc/Makefile
View File

@ -16,9 +16,10 @@ obj-$(CONFIG_AD799X) += ad799x.o
obj-$(CONFIG_AT91_ADC) += at91_adc.o
obj-$(CONFIG_AXP288_ADC) += axp288_adc.o
obj-$(CONFIG_BERLIN2_ADC) += berlin2-adc.o
obj-$(CONFIG_DA9150_GPADC) += da9150-gpadc.o
obj-$(CONFIG_CC10001_ADC) += cc10001_adc.o
obj-$(CONFIG_DA9150_GPADC) += da9150-gpadc.o
obj-$(CONFIG_EXYNOS_ADC) += exynos_adc.o
obj-$(CONFIG_HI8435) += hi8435.o
obj-$(CONFIG_LP8788_ADC) += lp8788_adc.o
obj-$(CONFIG_MAX1027) += max1027.o
obj-$(CONFIG_MAX1363) += max1363.o

91
drivers/iio/adc/berlin2-adc.c
View File

@ -27,13 +27,13 @@
#define BERLIN2_SM_CTRL_SM_SOC_INT BIT(1)
#define BERLIN2_SM_CTRL_SOC_SM_INT BIT(2)
#define BERLIN2_SM_CTRL_ADC_SEL(x) ((x) << 5) /* 0-15 */
#define BERLIN2_SM_CTRL_ADC_SEL_MASK (0xf << 5)
#define BERLIN2_SM_CTRL_ADC_SEL_MASK GENMASK(8, 5)
#define BERLIN2_SM_CTRL_ADC_POWER BIT(9)
#define BERLIN2_SM_CTRL_ADC_CLKSEL_DIV2 (0x0 << 10)
#define BERLIN2_SM_CTRL_ADC_CLKSEL_DIV3 (0x1 << 10)
#define BERLIN2_SM_CTRL_ADC_CLKSEL_DIV4 (0x2 << 10)
#define BERLIN2_SM_CTRL_ADC_CLKSEL_DIV8 (0x3 << 10)
#define BERLIN2_SM_CTRL_ADC_CLKSEL_MASK (0x3 << 10)
#define BERLIN2_SM_CTRL_ADC_CLKSEL_MASK GENMASK(11, 10)
#define BERLIN2_SM_CTRL_ADC_START BIT(12)
#define BERLIN2_SM_CTRL_ADC_RESET BIT(13)
#define BERLIN2_SM_CTRL_ADC_BANDGAP_RDY BIT(14)
@ -50,7 +50,7 @@
#define BERLIN2_SM_CTRL_TSEN_MODE_10_50 (0x1 << 22) /* 10-50 C */
#define BERLIN2_SM_CTRL_TSEN_RESET BIT(29)
#define BERLIN2_SM_ADC_DATA 0x20
#define BERLIN2_SM_ADC_MASK 0x3ff
#define BERLIN2_SM_ADC_MASK GENMASK(9, 0)
#define BERLIN2_SM_ADC_STATUS 0x1c
#define BERLIN2_SM_ADC_STATUS_DATA_RDY(x) BIT(x) /* 0-15 */
#define BERLIN2_SM_ADC_STATUS_DATA_RDY_MASK GENMASK(15, 0)
@ -65,9 +65,9 @@
#define BERLIN2_SM_TSEN_CTRL_START BIT(8)
#define BERLIN2_SM_TSEN_CTRL_SETTLING_4 (0x0 << 21) /* 4 us */
#define BERLIN2_SM_TSEN_CTRL_SETTLING_12 (0x1 << 21) /* 12 us */
#define BERLIN2_SM_TSEN_CTRL_SETTLING_MASK (0x1 << 21)
#define BERLIN2_SM_TSEN_CTRL_SETTLING_MASK BIT(21)
#define BERLIN2_SM_TSEN_CTRL_TRIM(x) ((x) << 22)
#define BERLIN2_SM_TSEN_CTRL_TRIM_MASK (0xf << 22)
#define BERLIN2_SM_TSEN_CTRL_TRIM_MASK GENMASK(25, 22)
struct berlin2_adc_priv {
struct regmap *regmap;
@ -78,13 +78,13 @@ struct berlin2_adc_priv {
};
#define BERLIN2_ADC_CHANNEL(n, t) \
{ \
.channel = n, \
.datasheet_name = "channel"#n, \
.type = t, \
.indexed = 1, \
.info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \
}
{ \
.channel = n, \
.datasheet_name = "channel"#n, \
.type = t, \
.indexed = 1, \
.info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \
}
static const struct iio_chan_spec berlin2_adc_channels[] = {
BERLIN2_ADC_CHANNEL(0, IIO_VOLTAGE), /* external input */
@ -111,18 +111,24 @@ static int berlin2_adc_read(struct iio_dev *indio_dev, int channel)
mutex_lock(&priv->lock);
/* Enable the interrupts */
regmap_write(priv->regmap, BERLIN2_SM_ADC_STATUS,
BERLIN2_SM_ADC_STATUS_INT_EN(channel));
/* Configure the ADC */
regmap_update_bits(priv->regmap, BERLIN2_SM_CTRL,
BERLIN2_SM_CTRL_ADC_RESET | BERLIN2_SM_CTRL_ADC_SEL_MASK
| BERLIN2_SM_CTRL_ADC_START,
BERLIN2_SM_CTRL_ADC_SEL(channel) | BERLIN2_SM_CTRL_ADC_START);
BERLIN2_SM_CTRL_ADC_RESET |
BERLIN2_SM_CTRL_ADC_SEL_MASK |
BERLIN2_SM_CTRL_ADC_START,
BERLIN2_SM_CTRL_ADC_SEL(channel) |
BERLIN2_SM_CTRL_ADC_START);
ret = wait_event_interruptible_timeout(priv->wq, priv->data_available,
msecs_to_jiffies(1000));
msecs_to_jiffies(1000));
/* Disable the interrupts */
regmap_update_bits(priv->regmap, BERLIN2_SM_ADC_STATUS,
BERLIN2_SM_ADC_STATUS_INT_EN(channel), 0);
BERLIN2_SM_ADC_STATUS_INT_EN(channel), 0);
if (ret == 0)
ret = -ETIMEDOUT;
@ -132,7 +138,7 @@ static int berlin2_adc_read(struct iio_dev *indio_dev, int channel)
}
regmap_update_bits(priv->regmap, BERLIN2_SM_CTRL,
BERLIN2_SM_CTRL_ADC_START, 0);
BERLIN2_SM_CTRL_ADC_START, 0);
data = priv->data;
priv->data_available = false;
@ -149,24 +155,31 @@ static int berlin2_adc_tsen_read(struct iio_dev *indio_dev)
mutex_lock(&priv->lock);
/* Enable interrupts */
regmap_write(priv->regmap, BERLIN2_SM_TSEN_STATUS,
BERLIN2_SM_TSEN_STATUS_INT_EN);
/* Configure the ADC */
regmap_update_bits(priv->regmap, BERLIN2_SM_CTRL,
BERLIN2_SM_CTRL_TSEN_RESET | BERLIN2_SM_CTRL_ADC_ROTATE,
BERLIN2_SM_CTRL_ADC_ROTATE);
BERLIN2_SM_CTRL_TSEN_RESET |
BERLIN2_SM_CTRL_ADC_ROTATE,
BERLIN2_SM_CTRL_ADC_ROTATE);
/* Configure the temperature sensor */
regmap_update_bits(priv->regmap, BERLIN2_SM_TSEN_CTRL,
BERLIN2_SM_TSEN_CTRL_TRIM_MASK | BERLIN2_SM_TSEN_CTRL_SETTLING_MASK
| BERLIN2_SM_TSEN_CTRL_START,
BERLIN2_SM_TSEN_CTRL_TRIM(3) | BERLIN2_SM_TSEN_CTRL_SETTLING_12
| BERLIN2_SM_TSEN_CTRL_START);
BERLIN2_SM_TSEN_CTRL_TRIM_MASK |
BERLIN2_SM_TSEN_CTRL_SETTLING_MASK |
BERLIN2_SM_TSEN_CTRL_START,
BERLIN2_SM_TSEN_CTRL_TRIM(3) |
BERLIN2_SM_TSEN_CTRL_SETTLING_12 |
BERLIN2_SM_TSEN_CTRL_START);
ret = wait_event_interruptible_timeout(priv->wq, priv->data_available,
msecs_to_jiffies(1000));
msecs_to_jiffies(1000));
/* Disable interrupts */
regmap_update_bits(priv->regmap, BERLIN2_SM_TSEN_STATUS,
BERLIN2_SM_TSEN_STATUS_INT_EN, 0);
BERLIN2_SM_TSEN_STATUS_INT_EN, 0);
if (ret == 0)
ret = -ETIMEDOUT;
@ -176,7 +189,7 @@ static int berlin2_adc_tsen_read(struct iio_dev *indio_dev)
}
regmap_update_bits(priv->regmap, BERLIN2_SM_TSEN_CTRL,
BERLIN2_SM_TSEN_CTRL_START, 0);
BERLIN2_SM_TSEN_CTRL_START, 0);
data = priv->data;
priv->data_available = false;
@ -187,10 +200,9 @@ static int berlin2_adc_tsen_read(struct iio_dev *indio_dev)
}
static int berlin2_adc_read_raw(struct iio_dev *indio_dev,
struct iio_chan_spec const *chan, int *val, int *val2,
long mask)
struct iio_chan_spec const *chan, int *val,
int *val2, long mask)
{
struct berlin2_adc_priv *priv = iio_priv(indio_dev);
int temp;
switch (mask) {
@ -198,10 +210,6 @@ static int berlin2_adc_read_raw(struct iio_dev *indio_dev,
if (chan->type != IIO_VOLTAGE)
return -EINVAL;
/* Enable the interrupts */
regmap_write(priv->regmap, BERLIN2_SM_ADC_STATUS,
BERLIN2_SM_ADC_STATUS_INT_EN(chan->channel));
*val = berlin2_adc_read(indio_dev, chan->channel);
if (*val < 0)
return *val;
@ -211,10 +219,6 @@ static int berlin2_adc_read_raw(struct iio_dev *indio_dev,
if (chan->type != IIO_TEMP)
return -EINVAL;
/* Enable interrupts */
regmap_write(priv->regmap, BERLIN2_SM_TSEN_STATUS,
BERLIN2_SM_TSEN_STATUS_INT_EN);
temp = berlin2_adc_tsen_read(indio_dev);
if (temp < 0)
return temp;
@ -306,12 +310,12 @@ static int berlin2_adc_probe(struct platform_device *pdev)
return tsen_irq;
ret = devm_request_irq(&pdev->dev, irq, berlin2_adc_irq, 0,
pdev->dev.driver->name, indio_dev);
pdev->dev.driver->name, indio_dev);
if (ret)
return ret;
ret = devm_request_irq(&pdev->dev, tsen_irq, berlin2_adc_tsen_irq,
0, pdev->dev.driver->name, indio_dev);
0, pdev->dev.driver->name, indio_dev);
if (ret)
return ret;
@ -328,13 +332,14 @@ static int berlin2_adc_probe(struct platform_device *pdev)
/* Power up the ADC */
regmap_update_bits(priv->regmap, BERLIN2_SM_CTRL,
BERLIN2_SM_CTRL_ADC_POWER, BERLIN2_SM_CTRL_ADC_POWER);
BERLIN2_SM_CTRL_ADC_POWER,
BERLIN2_SM_CTRL_ADC_POWER);
ret = iio_device_register(indio_dev);
if (ret) {
/* Power down the ADC */
regmap_update_bits(priv->regmap, BERLIN2_SM_CTRL,
BERLIN2_SM_CTRL_ADC_POWER, 0);
BERLIN2_SM_CTRL_ADC_POWER, 0);
return ret;
}
@ -350,7 +355,7 @@ static int berlin2_adc_remove(struct platform_device *pdev)
/* Power down the ADC */
regmap_update_bits(priv->regmap, BERLIN2_SM_CTRL,
BERLIN2_SM_CTRL_ADC_POWER, 0);
BERLIN2_SM_CTRL_ADC_POWER, 0);
return 0;
}

534
drivers/iio/adc/hi8435.c Normal file
View File

@ -0,0 +1,534 @@
/*
* Holt Integrated Circuits HI-8435 threshold detector driver
*
* Copyright (C) 2015 Zodiac Inflight Innovations
* Copyright (C) 2015 Cogent Embedded, Inc.
*
* 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.
*/
#include <linux/delay.h>
#include <linux/iio/events.h>
#include <linux/iio/iio.h>
#include <linux/iio/sysfs.h>
#include <linux/iio/trigger.h>
#include <linux/iio/trigger_consumer.h>
#include <linux/iio/triggered_event.h>
#include <linux/interrupt.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/of_gpio.h>
#include <linux/spi/spi.h>
#include <linux/gpio/consumer.h>
#define DRV_NAME "hi8435"
/* Register offsets for HI-8435 */
#define HI8435_CTRL_REG 0x02
#define HI8435_PSEN_REG 0x04
#define HI8435_TMDATA_REG 0x1E
#define HI8435_GOCENHYS_REG 0x3A
#define HI8435_SOCENHYS_REG 0x3C
#define HI8435_SO7_0_REG 0x10
#define HI8435_SO15_8_REG 0x12
#define HI8435_SO23_16_REG 0x14
#define HI8435_SO31_24_REG 0x16
#define HI8435_SO31_0_REG 0x78
#define HI8435_WRITE_OPCODE 0x00
#define HI8435_READ_OPCODE 0x80
/* CTRL register bits */
#define HI8435_CTRL_TEST 0x01
#define HI8435_CTRL_SRST 0x02
struct hi8435_priv {
struct spi_device *spi;
struct mutex lock;
unsigned long event_scan_mask; /* soft mask/unmask channels events */
unsigned int event_prev_val;
unsigned threshold_lo[2]; /* GND-Open and Supply-Open thresholds */
unsigned threshold_hi[2]; /* GND-Open and Supply-Open thresholds */
u8 reg_buffer[3] ____cacheline_aligned;
};
static int hi8435_readb(struct hi8435_priv *priv, u8 reg, u8 *val)
{
reg |= HI8435_READ_OPCODE;
return spi_write_then_read(priv->spi, &reg, 1, val, 1);
}
static int hi8435_readw(struct hi8435_priv *priv, u8 reg, u16 *val)
{
int ret;
__be16 be_val;
reg |= HI8435_READ_OPCODE;
ret = spi_write_then_read(priv->spi, &reg, 1, &be_val, 2);
*val = be16_to_cpu(be_val);
return ret;
}
static int hi8435_readl(struct hi8435_priv *priv, u8 reg, u32 *val)
{
int ret;
__be32 be_val;
reg |= HI8435_READ_OPCODE;
ret = spi_write_then_read(priv->spi, &reg, 1, &be_val, 4);
*val = be32_to_cpu(be_val);
return ret;
}
static int hi8435_writeb(struct hi8435_priv *priv, u8 reg, u8 val)
{
priv->reg_buffer[0] = reg | HI8435_WRITE_OPCODE;
priv->reg_buffer[1] = val;
return spi_write(priv->spi, priv->reg_buffer, 2);
}
static int hi8435_writew(struct hi8435_priv *priv, u8 reg, u16 val)
{
priv->reg_buffer[0] = reg | HI8435_WRITE_OPCODE;
priv->reg_buffer[1] = (val >> 8) & 0xff;
priv->reg_buffer[2] = val & 0xff;
return spi_write(priv->spi, priv->reg_buffer, 3);
}
static int hi8435_read_event_config(struct iio_dev *idev,
const struct iio_chan_spec *chan,
enum iio_event_type type,
enum iio_event_direction dir)
{
struct hi8435_priv *priv = iio_priv(idev);
return !!(priv->event_scan_mask & BIT(chan->channel));
}
static int hi8435_write_event_config(struct iio_dev *idev,
const struct iio_chan_spec *chan,
enum iio_event_type type,
enum iio_event_direction dir, int state)
{
struct hi8435_priv *priv = iio_priv(idev);
priv->event_scan_mask &= ~BIT(chan->channel);
if (state)
priv->event_scan_mask |= BIT(chan->channel);
return 0;
}
static int hi8435_read_event_value(struct iio_dev *idev,
const struct iio_chan_spec *chan,
enum iio_event_type type,
enum iio_event_direction dir,
enum iio_event_info info,
int *val, int *val2)
{
struct hi8435_priv *priv = iio_priv(idev);
int ret;
u8 mode, psen;
u16 reg;
ret = hi8435_readb(priv, HI8435_PSEN_REG, &psen);
if (ret < 0)
return ret;
/* Supply-Open or GND-Open sensing mode */
mode = !!(psen & BIT(chan->channel / 8));
ret = hi8435_readw(priv, mode ? HI8435_SOCENHYS_REG :
HI8435_GOCENHYS_REG, &reg);
if (ret < 0)
return ret;
if (dir == IIO_EV_DIR_FALLING)
*val = ((reg & 0xff) - (reg >> 8)) / 2;
else if (dir == IIO_EV_DIR_RISING)
*val = ((reg & 0xff) + (reg >> 8)) / 2;
return IIO_VAL_INT;
}
static int hi8435_write_event_value(struct iio_dev *idev,
const struct iio_chan_spec *chan,
enum iio_event_type type,
enum iio_event_direction dir,
enum iio_event_info info,
int val, int val2)
{
struct hi8435_priv *priv = iio_priv(idev);
int ret;
u8 mode, psen;
u16 reg;
ret = hi8435_readb(priv, HI8435_PSEN_REG, &psen);
if (ret < 0)
return ret;
/* Supply-Open or GND-Open sensing mode */
mode = !!(psen & BIT(chan->channel / 8));
ret = hi8435_readw(priv, mode ? HI8435_SOCENHYS_REG :
HI8435_GOCENHYS_REG, &reg);
if (ret < 0)
return ret;
if (dir == IIO_EV_DIR_FALLING) {
/* falling threshold range 2..21V, hysteresis minimum 2V */
if (val < 2 || val > 21 || (val + 2) > priv->threshold_hi[mode])
return -EINVAL;
if (val == priv->threshold_lo[mode])
return 0;
priv->threshold_lo[mode] = val;
/* hysteresis must not be odd */
if ((priv->threshold_hi[mode] - priv->threshold_lo[mode]) % 2)
priv->threshold_hi[mode]--;
} else if (dir == IIO_EV_DIR_RISING) {
/* rising threshold range 3..22V, hysteresis minimum 2V */
if (val < 3 || val > 22 || val < (priv->threshold_lo[mode] + 2))
return -EINVAL;
if (val == priv->threshold_hi[mode])
return 0;
priv->threshold_hi[mode] = val;
/* hysteresis must not be odd */
if ((priv->threshold_hi[mode] - priv->threshold_lo[mode]) % 2)
priv->threshold_lo[mode]++;
}
/* program thresholds */
mutex_lock(&priv->lock);
ret = hi8435_readw(priv, mode ? HI8435_SOCENHYS_REG :
HI8435_GOCENHYS_REG, &reg);
if (ret < 0) {
mutex_unlock(&priv->lock);
return ret;
}
/* hysteresis */
reg = priv->threshold_hi[mode] - priv->threshold_lo[mode];
reg <<= 8;
/* threshold center */
reg |= (priv->threshold_hi[mode] + priv->threshold_lo[mode]);
ret = hi8435_writew(priv, mode ? HI8435_SOCENHYS_REG :
HI8435_GOCENHYS_REG, reg);
mutex_unlock(&priv->lock);
return ret;
}
static int hi8435_debugfs_reg_access(struct iio_dev *idev,
unsigned reg, unsigned writeval,
unsigned *readval)
{
struct hi8435_priv *priv = iio_priv(idev);
int ret;
u8 val;
if (readval != NULL) {
ret = hi8435_readb(priv, reg, &val);
*readval = val;
} else {
val = (u8)writeval;
ret = hi8435_writeb(priv, reg, val);
}
return ret;
}
static const struct iio_event_spec hi8435_events[] = {
{
.type = IIO_EV_TYPE_THRESH,
.dir = IIO_EV_DIR_RISING,
.mask_separate = BIT(IIO_EV_INFO_VALUE),
}, {
.type = IIO_EV_TYPE_THRESH,
.dir = IIO_EV_DIR_FALLING,
.mask_separate = BIT(IIO_EV_INFO_VALUE),
}, {
.type = IIO_EV_TYPE_THRESH,
.dir = IIO_EV_DIR_EITHER,
.mask_separate = BIT(IIO_EV_INFO_ENABLE),
},
};
static int hi8435_get_sensing_mode(struct iio_dev *idev,
const struct iio_chan_spec *chan)
{
struct hi8435_priv *priv = iio_priv(idev);
int ret;
u8 reg;
ret = hi8435_readb(priv, HI8435_PSEN_REG, &reg);
if (ret < 0)
return ret;
return !!(reg & BIT(chan->channel / 8));
}
static int hi8435_set_sensing_mode(struct iio_dev *idev,
const struct iio_chan_spec *chan,
unsigned int mode)
{
struct hi8435_priv *priv = iio_priv(idev);
int ret;
u8 reg;
mutex_lock(&priv->lock);
ret = hi8435_readb(priv, HI8435_PSEN_REG, &reg);
if (ret < 0) {
mutex_unlock(&priv->lock);
return ret;
}
reg &= ~BIT(chan->channel / 8);
if (mode)
reg |= BIT(chan->channel / 8);
ret = hi8435_writeb(priv, HI8435_PSEN_REG, reg);
mutex_unlock(&priv->lock);
return ret;
}
static const char * const hi8435_sensing_modes[] = { "GND-Open",
"Supply-Open" };
static const struct iio_enum hi8435_sensing_mode = {
.items = hi8435_sensing_modes,
.num_items = ARRAY_SIZE(hi8435_sensing_modes),
.get = hi8435_get_sensing_mode,
.set = hi8435_set_sensing_mode,
};
static const struct iio_chan_spec_ext_info hi8435_ext_info[] = {
IIO_ENUM("sensing_mode", IIO_SEPARATE, &hi8435_sensing_mode),
{},
};
#define HI8435_VOLTAGE_CHANNEL(num) \
{ \
.type = IIO_VOLTAGE, \
.indexed = 1, \
.channel = num, \
.event_spec = hi8435_events, \
.num_event_specs = ARRAY_SIZE(hi8435_events), \
.ext_info = hi8435_ext_info, \
}
static const struct iio_chan_spec hi8435_channels[] = {
HI8435_VOLTAGE_CHANNEL(0),
HI8435_VOLTAGE_CHANNEL(1),
HI8435_VOLTAGE_CHANNEL(2),
HI8435_VOLTAGE_CHANNEL(3),
HI8435_VOLTAGE_CHANNEL(4),
HI8435_VOLTAGE_CHANNEL(5),
HI8435_VOLTAGE_CHANNEL(6),
HI8435_VOLTAGE_CHANNEL(7),
HI8435_VOLTAGE_CHANNEL(8),
HI8435_VOLTAGE_CHANNEL(9),
HI8435_VOLTAGE_CHANNEL(10),
HI8435_VOLTAGE_CHANNEL(11),
HI8435_VOLTAGE_CHANNEL(12),
HI8435_VOLTAGE_CHANNEL(13),
HI8435_VOLTAGE_CHANNEL(14),
HI8435_VOLTAGE_CHANNEL(15),
HI8435_VOLTAGE_CHANNEL(16),
HI8435_VOLTAGE_CHANNEL(17),
HI8435_VOLTAGE_CHANNEL(18),
HI8435_VOLTAGE_CHANNEL(19),
HI8435_VOLTAGE_CHANNEL(20),
HI8435_VOLTAGE_CHANNEL(21),
HI8435_VOLTAGE_CHANNEL(22),
HI8435_VOLTAGE_CHANNEL(23),
HI8435_VOLTAGE_CHANNEL(24),
HI8435_VOLTAGE_CHANNEL(25),
HI8435_VOLTAGE_CHANNEL(26),
HI8435_VOLTAGE_CHANNEL(27),
HI8435_VOLTAGE_CHANNEL(28),
HI8435_VOLTAGE_CHANNEL(29),
HI8435_VOLTAGE_CHANNEL(30),
HI8435_VOLTAGE_CHANNEL(31),
IIO_CHAN_SOFT_TIMESTAMP(32),
};
static const struct iio_info hi8435_info = {
.driver_module = THIS_MODULE,
.read_event_config = &hi8435_read_event_config,
.write_event_config = hi8435_write_event_config,
.read_event_value = &hi8435_read_event_value,
.write_event_value = &hi8435_write_event_value,
.debugfs_reg_access = &hi8435_debugfs_reg_access,
};
static void hi8435_iio_push_event(struct iio_dev *idev, unsigned int val)
{
struct hi8435_priv *priv = iio_priv(idev);
enum iio_event_direction dir;
unsigned int i;
unsigned int status = priv->event_prev_val ^ val;
if (!status)
return;
for_each_set_bit(i, &priv->event_scan_mask, 32) {
if (status & BIT(i)) {
dir = val & BIT(i) ? IIO_EV_DIR_RISING :
IIO_EV_DIR_FALLING;
iio_push_event(idev,
IIO_UNMOD_EVENT_CODE(IIO_VOLTAGE, i,
IIO_EV_TYPE_THRESH, dir),
iio_get_time_ns());
}
}
priv->event_prev_val = val;
}
static irqreturn_t hi8435_trigger_handler(int irq, void *private)
{
struct iio_poll_func *pf = private;
struct iio_dev *idev = pf->indio_dev;
struct hi8435_priv *priv = iio_priv(idev);
u32 val;
int ret;
ret = hi8435_readl(priv, HI8435_SO31_0_REG, &val);
if (ret < 0)
goto err_read;
hi8435_iio_push_event(idev, val);
err_read:
iio_trigger_notify_done(idev->trig);
return IRQ_HANDLED;
}
static int hi8435_probe(struct spi_device *spi)
{
struct iio_dev *idev;
struct hi8435_priv *priv;
struct gpio_desc *reset_gpio;
int ret;
idev = devm_iio_device_alloc(&spi->dev, sizeof(*priv));
if (!idev)
return -ENOMEM;
priv = iio_priv(idev);
priv->spi = spi;
reset_gpio = devm_gpiod_get(&spi->dev, NULL, GPIOD_OUT_LOW);
if (IS_ERR(reset_gpio)) {
/* chip s/w reset if h/w reset failed */
hi8435_writeb(priv, HI8435_CTRL_REG, HI8435_CTRL_SRST);
hi8435_writeb(priv, HI8435_CTRL_REG, 0);
} else {
udelay(5);
gpiod_set_value(reset_gpio, 1);
}
spi_set_drvdata(spi, idev);
mutex_init(&priv->lock);
idev->dev.parent = &spi->dev;
idev->name = spi_get_device_id(spi)->name;
idev->modes = INDIO_DIRECT_MODE;
idev->info = &hi8435_info;
idev->channels = hi8435_channels;
idev->num_channels = ARRAY_SIZE(hi8435_channels);
/* unmask all events */
priv->event_scan_mask = ~(0);
/*
* There is a restriction in the chip - the hysteresis can not be odd.
* If the hysteresis is set to odd value then chip gets into lock state
* and not functional anymore.
* After chip reset the thresholds are in undefined state, so we need to
* initialize thresholds to some initial values and then prevent
* userspace setting odd hysteresis.
*
* Set threshold low voltage to 2V, threshold high voltage to 4V
* for both GND-Open and Supply-Open sensing modes.
*/
priv->threshold_lo[0] = priv->threshold_lo[1] = 2;
priv->threshold_hi[0] = priv->threshold_hi[1] = 4;
hi8435_writew(priv, HI8435_GOCENHYS_REG, 0x206);
hi8435_writew(priv, HI8435_SOCENHYS_REG, 0x206);
ret = iio_triggered_event_setup(idev, NULL, hi8435_trigger_handler);
if (ret)
return ret;
ret = iio_device_register(idev);
if (ret < 0) {
dev_err(&spi->dev, "unable to register device\n");
goto unregister_triggered_event;
}
return 0;
unregister_triggered_event:
iio_triggered_event_cleanup(idev);
return ret;
}
static int hi8435_remove(struct spi_device *spi)
{
struct iio_dev *idev = spi_get_drvdata(spi);
iio_device_unregister(idev);
iio_triggered_event_cleanup(idev);
return 0;
}
static const struct of_device_id hi8435_dt_ids[] = {
{ .compatible = "holt,hi8435" },
{},
};
MODULE_DEVICE_TABLE(of, hi8435_dt_ids);
static const struct spi_device_id hi8435_id[] = {
{ "hi8435", 0},
{ }
};
MODULE_DEVICE_TABLE(spi, hi8435_id);
static struct spi_driver hi8435_driver = {
.driver = {
.name = DRV_NAME,
.of_match_table = of_match_ptr(hi8435_dt_ids),
},
.probe = hi8435_probe,
.remove = hi8435_remove,
.id_table = hi8435_id,
};
module_spi_driver(hi8435_driver);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Vladimir Barinov");
MODULE_DESCRIPTION("HI-8435 threshold detector");

1
drivers/iio/adc/max1027.c
View File

@ -508,6 +508,7 @@ static int max1027_remove(struct spi_device *spi)
static struct spi_driver max1027_driver = {
.driver = {
.name = "max1027",
.of_match_table = of_match_ptr(max1027_adc_dt_ids),
.owner = THIS_MODULE,
},
.probe = max1027_probe,

1
drivers/iio/adc/mcp320x.c
View File

@ -404,6 +404,7 @@ MODULE_DEVICE_TABLE(spi, mcp320x_id);
static struct spi_driver mcp320x_driver = {
.driver = {
.name = "mcp320x",
.of_match_table = of_match_ptr(mcp320x_dt_ids),
.owner = THIS_MODULE,
},
.probe = mcp320x_probe,

8
drivers/iio/adc/ti-adc128s052.c
View File

@ -174,6 +174,13 @@ static int adc128_remove(struct spi_device *spi)
return 0;
}
static const struct of_device_id adc128_of_match[] = {
{ .compatible = "ti,adc128s052", },
{ .compatible = "ti,adc122s021", },
{ /* sentinel */ },
};
MODULE_DEVICE_TABLE(of, adc128_of_match);
static const struct spi_device_id adc128_id[] = {
{ "adc128s052", 0}, /* index into adc128_config */
{ "adc122s021", 1},
@ -184,6 +191,7 @@ MODULE_DEVICE_TABLE(spi, adc128_id);
static struct spi_driver adc128_driver = {
.driver = {
.name = "adc128s052",
.of_match_table = of_match_ptr(adc128_of_match),
.owner = THIS_MODULE,
},
.probe = adc128_probe,

1
drivers/iio/adc/twl6030-gpadc.c
View File

@ -875,6 +875,7 @@ static const struct of_device_id of_twl6030_match_tbl[] = {
},
{ /* end */ }
};
MODULE_DEVICE_TABLE(of, of_twl6030_match_tbl);
static int twl6030_gpadc_probe(struct platform_device *pdev)
{

101
drivers/iio/adc/vf610_adc.c
View File

@ -34,8 +34,11 @@
#include <linux/err.h>
#include <linux/iio/iio.h>
#include <linux/iio/buffer.h>
#include <linux/iio/sysfs.h>
#include <linux/iio/driver.h>
#include <linux/iio/trigger.h>
#include <linux/iio/trigger_consumer.h>
#include <linux/iio/triggered_buffer.h>
/* This will be the driver name the kernel reports */
#define DRIVER_NAME "vf610-adc"
@ -170,6 +173,7 @@ struct vf610_adc {
u32 sample_freq_avail[5];
struct completion completion;
u16 buffer[8];
};
static const u32 vf610_hw_avgs[] = { 1, 4, 8, 16, 32 };
@ -505,12 +509,24 @@ static const struct iio_chan_spec_ext_info vf610_ext_info[] = {
.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE) | \
BIT(IIO_CHAN_INFO_SAMP_FREQ), \
.ext_info = vf610_ext_info, \
.scan_index = (_idx), \
.scan_type = { \
.sign = 'u', \
.realbits = 12, \
.storagebits = 16, \
}, \
}
#define VF610_ADC_TEMPERATURE_CHAN(_idx, _chan_type) { \
.type = (_chan_type), \
.channel = (_idx), \
.info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED), \
.scan_index = (_idx), \
.scan_type = { \
.sign = 'u', \
.realbits = 12, \
.storagebits = 16, \
}, \
}
static const struct iio_chan_spec vf610_adc_iio_channels[] = {
@ -531,6 +547,7 @@ static const struct iio_chan_spec vf610_adc_iio_channels[] = {
VF610_ADC_CHAN(14, IIO_VOLTAGE),
VF610_ADC_CHAN(15, IIO_VOLTAGE),
VF610_ADC_TEMPERATURE_CHAN(26, IIO_TEMP),
IIO_CHAN_SOFT_TIMESTAMP(32),
/* sentinel */
};
@ -559,13 +576,20 @@ static int vf610_adc_read_data(struct vf610_adc *info)
static irqreturn_t vf610_adc_isr(int irq, void *dev_id)
{
struct vf610_adc *info = (struct vf610_adc *)dev_id;
struct iio_dev *indio_dev = (struct iio_dev *)dev_id;
struct vf610_adc *info = iio_priv(indio_dev);
int coco;
coco = readl(info->regs + VF610_REG_ADC_HS);
if (coco & VF610_ADC_HS_COCO0) {
info->value = vf610_adc_read_data(info);
complete(&info->completion);
if (iio_buffer_enabled(indio_dev)) {
info->buffer[0] = info->value;
iio_push_to_buffers_with_timestamp(indio_dev,
info->buffer, iio_get_time_ns());
iio_trigger_notify_done(indio_dev->trig);
} else
complete(&info->completion);
}
return IRQ_HANDLED;
@ -613,8 +637,12 @@ static int vf610_read_raw(struct iio_dev *indio_dev,
case IIO_CHAN_INFO_RAW:
case IIO_CHAN_INFO_PROCESSED:
mutex_lock(&indio_dev->mlock);
reinit_completion(&info->completion);
if (iio_buffer_enabled(indio_dev)) {
mutex_unlock(&indio_dev->mlock);
return -EBUSY;
}
reinit_completion(&info->completion);
hc_cfg = VF610_ADC_ADCHC(chan->channel);
hc_cfg |= VF610_ADC_AIEN;
writel(hc_cfg, info->regs + VF610_REG_ADC_HC0);
@ -694,6 +722,56 @@ static int vf610_write_raw(struct iio_dev *indio_dev,
return -EINVAL;
}
static int vf610_adc_buffer_postenable(struct iio_dev *indio_dev)
{
struct vf610_adc *info = iio_priv(indio_dev);
unsigned int channel;
int ret;
int val;
ret = iio_triggered_buffer_postenable(indio_dev);
if (ret)
return ret;
val = readl(info->regs + VF610_REG_ADC_GC);
val |= VF610_ADC_ADCON;
writel(val, info->regs + VF610_REG_ADC_GC);
channel = find_first_bit(indio_dev->active_scan_mask,
indio_dev->masklength);
val = VF610_ADC_ADCHC(channel);
val |= VF610_ADC_AIEN;
writel(val, info->regs + VF610_REG_ADC_HC0);
return 0;
}
static int vf610_adc_buffer_predisable(struct iio_dev *indio_dev)
{
struct vf610_adc *info = iio_priv(indio_dev);
unsigned int hc_cfg = 0;
int val;
val = readl(info->regs + VF610_REG_ADC_GC);
val &= ~VF610_ADC_ADCON;
writel(val, info->regs + VF610_REG_ADC_GC);
hc_cfg |= VF610_ADC_CONV_DISABLE;
hc_cfg &= ~VF610_ADC_AIEN;
writel(hc_cfg, info->regs + VF610_REG_ADC_HC0);
return iio_triggered_buffer_predisable(indio_dev);
}
static const struct iio_buffer_setup_ops iio_triggered_buffer_setup_ops = {
.postenable = &vf610_adc_buffer_postenable,
.predisable = &vf610_adc_buffer_predisable,
.validate_scan_mask = &iio_validate_scan_mask_onehot,
};
static int vf610_adc_reg_access(struct iio_dev *indio_dev,
unsigned reg, unsigned writeval,
unsigned *readval)
@ -753,7 +831,7 @@ static int vf610_adc_probe(struct platform_device *pdev)
ret = devm_request_irq(info->dev, irq,
vf610_adc_isr, 0,
dev_name(&pdev->dev), info);
dev_name(&pdev->dev), indio_dev);
if (ret < 0) {
dev_err(&pdev->dev, "failed requesting irq, irq = %d\n", irq);
return ret;
@ -806,15 +884,23 @@ static int vf610_adc_probe(struct platform_device *pdev)
vf610_adc_cfg_init(info);
vf610_adc_hw_init(info);
ret = iio_triggered_buffer_setup(indio_dev, &iio_pollfunc_store_time,
NULL, &iio_triggered_buffer_setup_ops);
if (ret < 0) {
dev_err(&pdev->dev, "Couldn't initialise the buffer\n");
goto error_iio_device_register;
}
ret = iio_device_register(indio_dev);
if (ret) {
dev_err(&pdev->dev, "Couldn't register the device.\n");
goto error_iio_device_register;
goto error_adc_buffer_init;
}
return 0;
error_adc_buffer_init:
iio_triggered_buffer_cleanup(indio_dev);
error_iio_device_register:
clk_disable_unprepare(info->clk);
error_adc_clk_enable:
@ -829,6 +915,7 @@ static int vf610_adc_remove(struct platform_device *pdev)
struct vf610_adc *info = iio_priv(indio_dev);
iio_device_unregister(indio_dev);
iio_triggered_buffer_cleanup(indio_dev);
regulator_disable(info->vref);
clk_disable_unprepare(info->clk);

37
drivers/iio/adc/xilinx-xadc-core.c
View File

@ -273,33 +273,13 @@ static void xadc_zynq_unmask_worker(struct work_struct *work)
schedule_delayed_work(&xadc->zynq_unmask_work,
msecs_to_jiffies(XADC_ZYNQ_UNMASK_TIMEOUT));
}
}
static irqreturn_t xadc_zynq_threaded_interrupt_handler(int irq, void *devid)
{
struct iio_dev *indio_dev = devid;
struct xadc *xadc = iio_priv(indio_dev);
unsigned int alarm;
spin_lock_irq(&xadc->lock);
alarm = xadc->zynq_alarm;
xadc->zynq_alarm = 0;
spin_unlock_irq(&xadc->lock);
xadc_handle_events(indio_dev, xadc_zynq_transform_alarm(alarm));
/* unmask the required interrupts in timer. */
schedule_delayed_work(&xadc->zynq_unmask_work,
msecs_to_jiffies(XADC_ZYNQ_UNMASK_TIMEOUT));
return IRQ_HANDLED;
}
static irqreturn_t xadc_zynq_interrupt_handler(int irq, void *devid)
{
struct iio_dev *indio_dev = devid;
struct xadc *xadc = iio_priv(indio_dev);
irqreturn_t ret = IRQ_HANDLED;
uint32_t status;
xadc_read_reg(xadc, XADC_ZYNQ_REG_INTSTS, &status);
@ -321,18 +301,23 @@ static irqreturn_t xadc_zynq_interrupt_handler(int irq, void *devid)
status &= XADC_ZYNQ_INT_ALARM_MASK;
if (status) {
xadc->zynq_alarm |= status;
xadc->zynq_masked_alarm |= status;
/*
* mask the current event interrupt,
* unmask it when the interrupt is no more active.
*/
xadc_zynq_update_intmsk(xadc, 0, 0);
ret = IRQ_WAKE_THREAD;
xadc_handle_events(indio_dev,
xadc_zynq_transform_alarm(status));
/* unmask the required interrupts in timer. */
schedule_delayed_work(&xadc->zynq_unmask_work,
msecs_to_jiffies(XADC_ZYNQ_UNMASK_TIMEOUT));
}
spin_unlock(&xadc->lock);
return ret;
return IRQ_HANDLED;
}
#define XADC_ZYNQ_TCK_RATE_MAX 50000000
@ -437,7 +422,6 @@ static const struct xadc_ops xadc_zynq_ops = {
.setup = xadc_zynq_setup,
.get_dclk_rate = xadc_zynq_get_dclk_rate,
.interrupt_handler = xadc_zynq_interrupt_handler,
.threaded_interrupt_handler = xadc_zynq_threaded_interrupt_handler,
.update_alarm = xadc_zynq_update_alarm,
};
@ -1225,9 +1209,8 @@ static int xadc_probe(struct platform_device *pdev)
if (ret)
goto err_free_samplerate_trigger;
ret = request_threaded_irq(irq, xadc->ops->interrupt_handler,
xadc->ops->threaded_interrupt_handler,
0, dev_name(&pdev->dev), indio_dev);
ret = request_irq(irq, xadc->ops->interrupt_handler, 0,
dev_name(&pdev->dev), indio_dev);
if (ret)
goto err_clk_disable_unprepare;

2
drivers/iio/adc/xilinx-xadc.h
View File

@ -60,7 +60,6 @@ struct xadc {
enum xadc_external_mux_mode external_mux_mode;
unsigned int zynq_alarm;
unsigned int zynq_masked_alarm;
unsigned int zynq_intmask;
struct delayed_work zynq_unmask_work;
@ -79,7 +78,6 @@ struct xadc_ops {
void (*update_alarm)(struct xadc *, unsigned int);
unsigned long (*get_dclk_rate)(struct xadc *);
irqreturn_t (*interrupt_handler)(int, void *);
irqreturn_t (*threaded_interrupt_handler)(int, void *);
unsigned int flags;
};

1
drivers/iio/amplifiers/ad8366.c
View File

@ -195,6 +195,7 @@ static const struct spi_device_id ad8366_id[] = {
{"ad8366", 0},
{}
};
MODULE_DEVICE_TABLE(spi, ad8366_id);
static struct spi_driver ad8366_driver = {
.driver = {

24
drivers/iio/buffer/Kconfig Normal file
View File

@ -0,0 +1,24 @@
#
# Industrial I/O generic buffer implementations
#
# When adding new entries keep the list in alphabetical order
config IIO_BUFFER_CB
tristate "IIO callback buffer used for push in-kernel interfaces"
help
Should be selected by any drivers that do in-kernel push
usage. That is, those where the data is pushed to the consumer.
config IIO_KFIFO_BUF
tristate "Industrial I/O buffering based on kfifo"
help
A simple fifo based on kfifo. Note that this currently provides
no buffer events so it is up to userspace to work out how
often to read from the buffer.
config IIO_TRIGGERED_BUFFER
tristate
select IIO_TRIGGER
select IIO_KFIFO_BUF
help
Provides helper functions for setting up triggered buffers.

8
drivers/iio/buffer/Makefile Normal file
View File

@ -0,0 +1,8 @@
#
# Makefile for the industrial I/O buffer implementations
#
# When adding new entries keep the list in alphabetical order
obj-$(CONFIG_IIO_BUFFER_CB) += industrialio-buffer-cb.o
obj-$(CONFIG_IIO_TRIGGERED_BUFFER) += industrialio-triggered-buffer.o
obj-$(CONFIG_IIO_KFIFO_BUF) += kfifo_buf.o

12
drivers/iio/buffer_cb.c → drivers/iio/buffer/industrialio-buffer-cb.c
View File

@ -1,4 +1,12 @@
/* The industrial I/O callback buffer
*
* 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.
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/err.h>
#include <linux/export.h>
@ -124,3 +132,7 @@ struct iio_channel
return cb_buffer->channels;
}
EXPORT_SYMBOL_GPL(iio_channel_cb_get_channels);
MODULE_AUTHOR("Jonathan Cameron <jic23@kernel.org>");
MODULE_DESCRIPTION("Industrial I/O callback buffer");
MODULE_LICENSE("GPL");

0
drivers/iio/industrialio-triggered-buffer.c → drivers/iio/buffer/industrialio-triggered-buffer.c
View File

0
drivers/iio/kfifo_buf.c → drivers/iio/buffer/kfifo_buf.c
View File

15
drivers/iio/chemical/Kconfig Normal file
View File

@ -0,0 +1,15 @@
#
# Chemical sensors
#
menu "Chemical Sensors"
config VZ89X
tristate "SGX Sensortech MiCS VZ89X VOC sensor"
depends on I2C
help
Say Y here to build I2C interface support for the SGX
Sensortech MiCS VZ89X VOC (Volatile Organic Compounds)
sensors
endmenu

6
drivers/iio/chemical/Makefile Normal file
View File

@ -0,0 +1,6 @@
#
# Makefile for IIO chemical sensors
#
# When adding new entries keep the list in alphabetical order
obj-$(CONFIG_VZ89X) += vz89x.o

237
drivers/iio/chemical/vz89x.c Normal file
View File

@ -0,0 +1,237 @@
/*
* vz89x.c - Support for SGX Sensortech MiCS VZ89X VOC sensors
*
* Copyright (C) 2015 Matt Ranostay <mranostay@gmail.com>
*
* 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.
*
*/
#include <linux/module.h>
#include <linux/mutex.h>
#include <linux/init.h>
#include <linux/i2c.h>
#include <linux/iio/iio.h>
#include <linux/iio/sysfs.h>
#define VZ89X_REG_MEASUREMENT 0x09
#define VZ89X_REG_MEASUREMENT_SIZE 6
#define VZ89X_VOC_CO2_IDX 0
#define VZ89X_VOC_SHORT_IDX 1
#define VZ89X_VOC_TVOC_IDX 2
#define VZ89X_VOC_RESISTANCE_IDX 3
struct vz89x_data {
struct i2c_client *client;
struct mutex lock;
unsigned long last_update;
u8 buffer[VZ89X_REG_MEASUREMENT_SIZE];
};
static const struct iio_chan_spec vz89x_channels[] = {
{
.type = IIO_CONCENTRATION,
.channel2 = IIO_MOD_CO2,
.modified = 1,
.info_mask_separate =
BIT(IIO_CHAN_INFO_OFFSET) | BIT(IIO_CHAN_INFO_RAW),
.address = VZ89X_VOC_CO2_IDX,
},
{
.type = IIO_CONCENTRATION,
.channel2 = IIO_MOD_VOC,
.modified = 1,
.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
.address = VZ89X_VOC_SHORT_IDX,
.extend_name = "short",
},
{
.type = IIO_CONCENTRATION,
.channel2 = IIO_MOD_VOC,
.modified = 1,
.info_mask_separate =
BIT(IIO_CHAN_INFO_OFFSET) | BIT(IIO_CHAN_INFO_RAW),
.address = VZ89X_VOC_TVOC_IDX,
},
{
.type = IIO_RESISTANCE,
.info_mask_separate =
BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
.address = VZ89X_VOC_RESISTANCE_IDX,
},
};
static IIO_CONST_ATTR(in_concentration_co2_scale, "0.00000698689");
static IIO_CONST_ATTR(in_concentration_voc_scale, "0.00000000436681223");
static struct attribute *vz89x_attributes[] = {
&iio_const_attr_in_concentration_co2_scale.dev_attr.attr,
&iio_const_attr_in_concentration_voc_scale.dev_attr.attr,
NULL,
};
static const struct attribute_group vz89x_attrs_group = {
.attrs = vz89x_attributes,
};
static int vz89x_get_measurement(struct vz89x_data *data)
{
int ret;
int i;
/* sensor can only be polled once a second max per datasheet */
if (!time_after(jiffies, data->last_update + HZ))
return 0;
ret = i2c_smbus_write_word_data(data->client,
VZ89X_REG_MEASUREMENT, 0);
if (ret < 0)
return ret;
for (i = 0; i < VZ89X_REG_MEASUREMENT_SIZE; i++) {
ret = i2c_smbus_read_byte(data->client);
if (ret < 0)
return ret;
data->buffer[i] = ret;
}
data->last_update = jiffies;
return 0;
}
static int vz89x_get_resistance_reading(struct vz89x_data *data)
{
u8 *buf = &data->buffer[VZ89X_VOC_TVOC_IDX];
return buf[0] | (buf[1] << 8) | (buf[2] << 16);
}
static int vz89x_read_raw(struct iio_dev *indio_dev,
struct iio_chan_spec const *chan, int *val,
int *val2, long mask)
{
struct vz89x_data *data = iio_priv(indio_dev);
int ret = -EINVAL;
switch (mask) {
case IIO_CHAN_INFO_RAW:
mutex_lock(&data->lock);
ret = vz89x_get_measurement(data);
mutex_unlock(&data->lock);
if (ret)
return ret;
switch (chan->address) {
case VZ89X_VOC_CO2_IDX:
case VZ89X_VOC_SHORT_IDX:
case VZ89X_VOC_TVOC_IDX:
*val = data->buffer[chan->address];
return IIO_VAL_INT;
case VZ89X_VOC_RESISTANCE_IDX:
*val = vz89x_get_resistance_reading(data);
return IIO_VAL_INT;
default:
return -EINVAL;
}
break;
case IIO_CHAN_INFO_SCALE:
switch (chan->type) {
case IIO_RESISTANCE:
*val = 10;
return IIO_VAL_INT;
default:
return -EINVAL;
}
break;
case IIO_CHAN_INFO_OFFSET:
switch (chan->address) {
case VZ89X_VOC_CO2_IDX:
*val = 44;
*val2 = 250000;
return IIO_VAL_INT_PLUS_MICRO;
case VZ89X_VOC_TVOC_IDX:
*val = -13;
return IIO_VAL_INT;
default:
return -EINVAL;
}
}
return ret;
}
static const struct iio_info vz89x_info = {
.attrs = &vz89x_attrs_group,
.read_raw = vz89x_read_raw,
.driver_module = THIS_MODULE,
};
static int vz89x_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct iio_dev *indio_dev;
struct vz89x_data *data;
if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_WORD_DATA |
I2C_FUNC_SMBUS_BYTE))
return -ENODEV;
indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data));
if (!indio_dev)
return -ENOMEM;
data = iio_priv(indio_dev);
i2c_set_clientdata(client, indio_dev);
data->client = client;
data->last_update = jiffies - HZ;
mutex_init(&data->lock);
indio_dev->dev.parent = &client->dev;
indio_dev->info = &vz89x_info,
indio_dev->name = dev_name(&client->dev);
indio_dev->modes = INDIO_DIRECT_MODE;
indio_dev->channels = vz89x_channels;
indio_dev->num_channels = ARRAY_SIZE(vz89x_channels);
return devm_iio_device_register(&client->dev, indio_dev);
}
static const struct i2c_device_id vz89x_id[] = {
{ "vz89x", 0 },
{ }
};
MODULE_DEVICE_TABLE(i2c, vz89x_id);
static const struct of_device_id vz89x_dt_ids[] = {
{ .compatible = "sgx,vz89x" },
{ }
};
MODULE_DEVICE_TABLE(of, vz89x_dt_ids);
static struct i2c_driver vz89x_driver = {
.driver = {
.name = "vz89x",
.of_match_table = of_match_ptr(vz89x_dt_ids),
},
.probe = vz89x_probe,
.id_table = vz89x_id,
};
module_i2c_driver(vz89x_driver);
MODULE_AUTHOR("Matt Ranostay <mranostay@gmail.com>");
MODULE_DESCRIPTION("SGX Sensortech MiCS VZ89X VOC sensors");
MODULE_LICENSE("GPL v2");

22
drivers/iio/common/st_sensors/st_sensors_core.c
View File

@ -44,6 +44,28 @@ st_sensors_write_data_with_mask_error:
return err;
}
int st_sensors_debugfs_reg_access(struct iio_dev *indio_dev,
unsigned reg, unsigned writeval,
unsigned *readval)
{
struct st_sensor_data *sdata = iio_priv(indio_dev);
u8 readdata;
int err;
if (!readval)
return sdata->tf->write_byte(&sdata->tb, sdata->dev,
(u8)reg, (u8)writeval);
err = sdata->tf->read_byte(&sdata->tb, sdata->dev, (u8)reg, &readdata);
if (err < 0)
return err;
*readval = (unsigned)readdata;
return 0;
}
EXPORT_SYMBOL(st_sensors_debugfs_reg_access);
static int st_sensors_match_odr(struct st_sensor_settings *sensor_settings,
unsigned int odr, struct st_sensor_odr_avl *odr_out)
{

7
drivers/iio/dac/ad7303.c
View File

@ -281,6 +281,12 @@ static int ad7303_remove(struct spi_device *spi)
return 0;
}
static const struct of_device_id ad7303_spi_of_match[] = {
{ .compatible = "adi,ad7303", },
{ /* sentinel */ },
};
MODULE_DEVICE_TABLE(of, ad7303_spi_of_match);
static const struct spi_device_id ad7303_spi_ids[] = {
{ "ad7303", 0 },
{}
@ -290,6 +296,7 @@ MODULE_DEVICE_TABLE(spi, ad7303_spi_ids);
static struct spi_driver ad7303_driver = {
.driver = {
.name = "ad7303",
.of_match_table = of_match_ptr(ad7303_spi_of_match),
.owner = THIS_MODULE,
},
.probe = ad7303_probe,

1
drivers/iio/dac/max5821.c
View File

@ -387,6 +387,7 @@ static const struct of_device_id max5821_of_match[] = {
{ .compatible = "maxim,max5821" },
{ }
};
MODULE_DEVICE_TABLE(of, max5821_of_match);
static struct i2c_driver max5821_driver = {
.driver = {

9
drivers/iio/frequency/adf4350.c
View File

@ -616,15 +616,24 @@ static int adf4350_remove(struct spi_device *spi)
return 0;
}
static const struct of_device_id adf4350_of_match[] = {
{ .compatible = "adi,adf4350", },
{ .compatible = "adi,adf4351", },
{ /* sentinel */ },
};
MODULE_DEVICE_TABLE(of, adf4350_of_match);
static const struct spi_device_id adf4350_id[] = {
{"adf4350", 4350},
{"adf4351", 4351},
{}
};
MODULE_DEVICE_TABLE(spi, adf4350_id);
static struct spi_driver adf4350_driver = {
.driver = {
.name = "adf4350",
.of_match_table = of_match_ptr(adf4350_of_match),
.owner = THIS_MODULE,
},
.probe = adf4350_probe,

19
drivers/iio/gyro/Kconfig
View File

@ -52,15 +52,26 @@ config ADXRS450
config BMG160
tristate "BOSCH BMG160 Gyro Sensor"
depends on I2C
depends on (I2C || SPI_MASTER)
select IIO_BUFFER
select IIO_TRIGGERED_BUFFER
select BMG160_I2C if (I2C)
select BMG160_SPI if (SPI)
help
Say yes here to build support for Bosch BMG160 Tri-axis Gyro Sensor
driver. This driver also supports BMI055 gyroscope.
Say yes here to build support for BOSCH BMG160 Tri-axis Gyro Sensor
driver connected via I2C or SPI. This driver also supports BMI055
gyroscope.
This driver can also be built as a module. If so, the module
will be called bmg160.
will be called bmg160_i2c or bmg160_spi.
config BMG160_I2C
tristate
select REGMAP_I2C
config BMG160_SPI
tristate
select REGMAP_SPI
config HID_SENSOR_GYRO_3D
depends on HID_SENSOR_HUB

4
drivers/iio/gyro/Makefile
View File

@ -8,7 +8,9 @@ obj-$(CONFIG_ADIS16130) += adis16130.o
obj-$(CONFIG_ADIS16136) += adis16136.o
obj-$(CONFIG_ADIS16260) += adis16260.o
obj-$(CONFIG_ADXRS450) += adxrs450.o
obj-$(CONFIG_BMG160) += bmg160.o
obj-$(CONFIG_BMG160) += bmg160_core.o
obj-$(CONFIG_BMG160_I2C) += bmg160_i2c.o
obj-$(CONFIG_BMG160_SPI) += bmg160_spi.o
obj-$(CONFIG_HID_SENSOR_GYRO_3D) += hid-sensor-gyro-3d.o

10
drivers/iio/gyro/bmg160.h Normal file
View File

@ -0,0 +1,10 @@
#ifndef BMG160_H_
#define BMG160_H_
extern const struct dev_pm_ops bmg160_pm_ops;
int bmg160_core_probe(struct device *dev, struct regmap *regmap, int irq,
const char *name);
void bmg160_core_remove(struct device *dev);
#endif /* BMG160_H_ */

361
drivers/iio/gyro/bmg160.c → drivers/iio/gyro/bmg160_core.c
View File

@ -13,7 +13,6 @@
*/
#include <linux/module.h>
#include <linux/i2c.h>
#include <linux/interrupt.h>
#include <linux/delay.h>
#include <linux/slab.h>
@ -28,8 +27,9 @@
#include <linux/iio/events.h>
#include <linux/iio/trigger_consumer.h>
#include <linux/iio/triggered_buffer.h>
#include <linux/regmap.h>
#include "bmg160.h"
#define BMG160_DRV_NAME "bmg160"
#define BMG160_IRQ_NAME "bmg160_event"
#define BMG160_GPIO_NAME "gpio_int"
@ -97,7 +97,8 @@
#define BMG160_AUTO_SUSPEND_DELAY_MS 2000
struct bmg160_data {
struct i2c_client *client;
struct device *dev;
struct regmap *regmap;
struct iio_trigger *dready_trig;
struct iio_trigger *motion_trig;
struct mutex mutex;
@ -108,6 +109,7 @@ struct bmg160_data {
int slope_thres;
bool dready_trigger_on;
bool motion_trigger_on;
int irq;
};
enum bmg160_axis {
@ -138,10 +140,9 @@ static int bmg160_set_mode(struct bmg160_data *data, u8 mode)
{
int ret;
ret = i2c_smbus_write_byte_data(data->client,
BMG160_REG_PMU_LPW, mode);
ret = regmap_write(data->regmap, BMG160_REG_PMU_LPW, mode);
if (ret < 0) {
dev_err(&data->client->dev, "Error writing reg_pmu_lpw\n");
dev_err(data->dev, "Error writing reg_pmu_lpw\n");
return ret;
}
@ -169,10 +170,9 @@ static int bmg160_set_bw(struct bmg160_data *data, int val)
if (bw_bits < 0)
return bw_bits;
ret = i2c_smbus_write_byte_data(data->client, BMG160_REG_PMU_BW,
bw_bits);
ret = regmap_write(data->regmap, BMG160_REG_PMU_BW, bw_bits);
if (ret < 0) {
dev_err(&data->client->dev, "Error writing reg_pmu_bw\n");
dev_err(data->dev, "Error writing reg_pmu_bw\n");
return ret;
}
@ -184,16 +184,17 @@ static int bmg160_set_bw(struct bmg160_data *data, int val)
static int bmg160_chip_init(struct bmg160_data *data)
{
int ret;
unsigned int val;
ret = i2c_smbus_read_byte_data(data->client, BMG160_REG_CHIP_ID);
ret = regmap_read(data->regmap, BMG160_REG_CHIP_ID, &val);
if (ret < 0) {
dev_err(&data->client->dev, "Error reading reg_chip_id\n");
dev_err(data->dev, "Error reading reg_chip_id\n");
return ret;
}
dev_dbg(&data->client->dev, "Chip Id %x\n", ret);
if (ret != BMG160_CHIP_ID_VAL) {
dev_err(&data->client->dev, "invalid chip %x\n", ret);
dev_dbg(data->dev, "Chip Id %x\n", val);
if (val != BMG160_CHIP_ID_VAL) {
dev_err(data->dev, "invalid chip %x\n", val);
return -ENODEV;
}
@ -210,42 +211,33 @@ static int bmg160_chip_init(struct bmg160_data *data)
return ret;
/* Set Default Range */
ret = i2c_smbus_write_byte_data(data->client,
BMG160_REG_RANGE,
BMG160_RANGE_500DPS);
ret = regmap_write(data->regmap, BMG160_REG_RANGE, BMG160_RANGE_500DPS);
if (ret < 0) {
dev_err(&data->client->dev, "Error writing reg_range\n");
dev_err(data->dev, "Error writing reg_range\n");
return ret;
}
data->dps_range = BMG160_RANGE_500DPS;
ret = i2c_smbus_read_byte_data(data->client, BMG160_REG_SLOPE_THRES);
ret = regmap_read(data->regmap, BMG160_REG_SLOPE_THRES, &val);
if (ret < 0) {
dev_err(&data->client->dev, "Error reading reg_slope_thres\n");
dev_err(data->dev, "Error reading reg_slope_thres\n");
return ret;
}
data->slope_thres = ret;
data->slope_thres = val;
/* Set default interrupt mode */
ret = i2c_smbus_read_byte_data(data->client, BMG160_REG_INT_EN_1);
ret = regmap_update_bits(data->regmap, BMG160_REG_INT_EN_1,
BMG160_INT1_BIT_OD, 0);
if (ret < 0) {
dev_err(&data->client->dev, "Error reading reg_int_en_1\n");
return ret;
}
ret &= ~BMG160_INT1_BIT_OD;
ret = i2c_smbus_write_byte_data(data->client,
BMG160_REG_INT_EN_1, ret);
if (ret < 0) {
dev_err(&data->client->dev, "Error writing reg_int_en_1\n");
dev_err(data->dev, "Error updating bits in reg_int_en_1\n");
return ret;
}
ret = i2c_smbus_write_byte_data(data->client,
BMG160_REG_INT_RST_LATCH,
BMG160_INT_MODE_LATCH_INT |
BMG160_INT_MODE_LATCH_RESET);
ret = regmap_write(data->regmap, BMG160_REG_INT_RST_LATCH,
BMG160_INT_MODE_LATCH_INT |
BMG160_INT_MODE_LATCH_RESET);
if (ret < 0) {
dev_err(&data->client->dev,
dev_err(data->dev,
"Error writing reg_motion_intr\n");
return ret;
}
@ -259,17 +251,17 @@ static int bmg160_set_power_state(struct bmg160_data *data, bool on)
int ret;
if (on)
ret = pm_runtime_get_sync(&data->client->dev);
ret = pm_runtime_get_sync(data->dev);
else {
pm_runtime_mark_last_busy(&data->client->dev);
ret = pm_runtime_put_autosuspend(&data->client->dev);
pm_runtime_mark_last_busy(data->dev);
ret = pm_runtime_put_autosuspend(data->dev);
}
if (ret < 0) {
dev_err(&data->client->dev,
dev_err(data->dev,
"Failed: bmg160_set_power_state for %d\n", on);
if (on)
pm_runtime_put_noidle(&data->client->dev);
pm_runtime_put_noidle(data->dev);
return ret;
}
@ -284,43 +276,30 @@ static int bmg160_setup_any_motion_interrupt(struct bmg160_data *data,
int ret;
/* Enable/Disable INT_MAP0 mapping */
ret = i2c_smbus_read_byte_data(data->client, BMG160_REG_INT_MAP_0);
ret = regmap_update_bits(data->regmap, BMG160_REG_INT_MAP_0,
BMG160_INT_MAP_0_BIT_ANY,
(status ? BMG160_INT_MAP_0_BIT_ANY : 0));
if (ret < 0) {
dev_err(&data->client->dev, "Error reading reg_int_map0\n");
return ret;
}
if (status)
ret |= BMG160_INT_MAP_0_BIT_ANY;
else
ret &= ~BMG160_INT_MAP_0_BIT_ANY;
ret = i2c_smbus_write_byte_data(data->client,
BMG160_REG_INT_MAP_0,
ret);
if (ret < 0) {
dev_err(&data->client->dev, "Error writing reg_int_map0\n");
dev_err(data->dev, "Error updating bits reg_int_map0\n");
return ret;
}
/* Enable/Disable slope interrupts */
if (status) {
/* Update slope thres */
ret = i2c_smbus_write_byte_data(data->client,
BMG160_REG_SLOPE_THRES,
data->slope_thres);
ret = regmap_write(data->regmap, BMG160_REG_SLOPE_THRES,
data->slope_thres);
if (ret < 0) {
dev_err(&data->client->dev,
dev_err(data->dev,
"Error writing reg_slope_thres\n");
return ret;
}
ret = i2c_smbus_write_byte_data(data->client,
BMG160_REG_MOTION_INTR,
BMG160_INT_MOTION_X |
BMG160_INT_MOTION_Y |
BMG160_INT_MOTION_Z);
ret = regmap_write(data->regmap, BMG160_REG_MOTION_INTR,
BMG160_INT_MOTION_X | BMG160_INT_MOTION_Y |
BMG160_INT_MOTION_Z);
if (ret < 0) {
dev_err(&data->client->dev,
dev_err(data->dev,
"Error writing reg_motion_intr\n");
return ret;
}
@ -331,28 +310,26 @@ static int bmg160_setup_any_motion_interrupt(struct bmg160_data *data,
* to set latched mode, we will be flooded anyway with INTR
*/
if (!data->dready_trigger_on) {
ret = i2c_smbus_write_byte_data(data->client,
BMG160_REG_INT_RST_LATCH,
BMG160_INT_MODE_LATCH_INT |
BMG160_INT_MODE_LATCH_RESET);
ret = regmap_write(data->regmap,
BMG160_REG_INT_RST_LATCH,
BMG160_INT_MODE_LATCH_INT |
BMG160_INT_MODE_LATCH_RESET);
if (ret < 0) {
dev_err(&data->client->dev,
dev_err(data->dev,
"Error writing reg_rst_latch\n");
return ret;
}
}
ret = i2c_smbus_write_byte_data(data->client,
BMG160_REG_INT_EN_0,
BMG160_DATA_ENABLE_INT);
ret = regmap_write(data->regmap, BMG160_REG_INT_EN_0,
BMG160_DATA_ENABLE_INT);
} else
ret = i2c_smbus_write_byte_data(data->client,
BMG160_REG_INT_EN_0,
0);
} else {
ret = regmap_write(data->regmap, BMG160_REG_INT_EN_0, 0);
}
if (ret < 0) {
dev_err(&data->client->dev, "Error writing reg_int_en0\n");
dev_err(data->dev, "Error writing reg_int_en0\n");
return ret;
}
@ -365,59 +342,43 @@ static int bmg160_setup_new_data_interrupt(struct bmg160_data *data,
int ret;
/* Enable/Disable INT_MAP1 mapping */
ret = i2c_smbus_read_byte_data(data->client, BMG160_REG_INT_MAP_1);
ret = regmap_update_bits(data->regmap, BMG160_REG_INT_MAP_1,
BMG160_INT_MAP_1_BIT_NEW_DATA,
(status ? BMG160_INT_MAP_1_BIT_NEW_DATA : 0));
if (ret < 0) {
dev_err(&data->client->dev, "Error reading reg_int_map1\n");
return ret;
}
if (status)
ret |= BMG160_INT_MAP_1_BIT_NEW_DATA;
else
ret &= ~BMG160_INT_MAP_1_BIT_NEW_DATA;
ret = i2c_smbus_write_byte_data(data->client,
BMG160_REG_INT_MAP_1,
ret);
if (ret < 0) {
dev_err(&data->client->dev, "Error writing reg_int_map1\n");
dev_err(data->dev, "Error updating bits in reg_int_map1\n");
return ret;
}
if (status) {
ret = i2c_smbus_write_byte_data(data->client,
BMG160_REG_INT_RST_LATCH,
BMG160_INT_MODE_NON_LATCH_INT |
BMG160_INT_MODE_LATCH_RESET);
ret = regmap_write(data->regmap, BMG160_REG_INT_RST_LATCH,
BMG160_INT_MODE_NON_LATCH_INT |
BMG160_INT_MODE_LATCH_RESET);
if (ret < 0) {
dev_err(&data->client->dev,
dev_err(data->dev,
"Error writing reg_rst_latch\n");
return ret;
}
ret = i2c_smbus_write_byte_data(data->client,
BMG160_REG_INT_EN_0,
BMG160_DATA_ENABLE_INT);
ret = regmap_write(data->regmap, BMG160_REG_INT_EN_0,
BMG160_DATA_ENABLE_INT);
} else {
/* Restore interrupt mode */
ret = i2c_smbus_write_byte_data(data->client,
BMG160_REG_INT_RST_LATCH,
BMG160_INT_MODE_LATCH_INT |
BMG160_INT_MODE_LATCH_RESET);
ret = regmap_write(data->regmap, BMG160_REG_INT_RST_LATCH,
BMG160_INT_MODE_LATCH_INT |
BMG160_INT_MODE_LATCH_RESET);
if (ret < 0) {
dev_err(&data->client->dev,
dev_err(data->dev,
"Error writing reg_rst_latch\n");
return ret;
}
ret = i2c_smbus_write_byte_data(data->client,
BMG160_REG_INT_EN_0,
0);
ret = regmap_write(data->regmap, BMG160_REG_INT_EN_0, 0);
}
if (ret < 0) {
dev_err(&data->client->dev, "Error writing reg_int_en0\n");
dev_err(data->dev, "Error writing reg_int_en0\n");
return ret;
}
@ -444,12 +405,10 @@ static int bmg160_set_scale(struct bmg160_data *data, int val)
for (i = 0; i < ARRAY_SIZE(bmg160_scale_table); ++i) {
if (bmg160_scale_table[i].scale == val) {
ret = i2c_smbus_write_byte_data(
data->client,
BMG160_REG_RANGE,
bmg160_scale_table[i].dps_range);
ret = regmap_write(data->regmap, BMG160_REG_RANGE,
bmg160_scale_table[i].dps_range);
if (ret < 0) {
dev_err(&data->client->dev,
dev_err(data->dev,
"Error writing reg_range\n");
return ret;
}
@ -464,6 +423,7 @@ static int bmg160_set_scale(struct bmg160_data *data, int val)
static int bmg160_get_temp(struct bmg160_data *data, int *val)
{
int ret;
unsigned int raw_val;
mutex_lock(&data->mutex);
ret = bmg160_set_power_state(data, true);
@ -472,15 +432,15 @@ static int bmg160_get_temp(struct bmg160_data *data, int *val)
return ret;
}
ret = i2c_smbus_read_byte_data(data->client, BMG160_REG_TEMP);
ret = regmap_read(data->regmap, BMG160_REG_TEMP, &raw_val);
if (ret < 0) {
dev_err(&data->client->dev, "Error reading reg_temp\n");
dev_err(data->dev, "Error reading reg_temp\n");
bmg160_set_power_state(data, false);
mutex_unlock(&data->mutex);
return ret;
}
*val = sign_extend32(ret, 7);
*val = sign_extend32(raw_val, 7);
ret = bmg160_set_power_state(data, false);
mutex_unlock(&data->mutex);
if (ret < 0)
@ -492,6 +452,7 @@ static int bmg160_get_temp(struct bmg160_data *data, int *val)
static int bmg160_get_axis(struct bmg160_data *data, int axis, int *val)
{
int ret;
unsigned int raw_val;
mutex_lock(&data->mutex);
ret = bmg160_set_power_state(data, true);
@ -500,15 +461,16 @@ static int bmg160_get_axis(struct bmg160_data *data, int axis, int *val)
return ret;
}
ret = i2c_smbus_read_word_data(data->client, BMG160_AXIS_TO_REG(axis));
ret = regmap_bulk_read(data->regmap, BMG160_AXIS_TO_REG(axis), &raw_val,
2);
if (ret < 0) {
dev_err(&data->client->dev, "Error reading axis %d\n", axis);
dev_err(data->dev, "Error reading axis %d\n", axis);
bmg160_set_power_state(data, false);
mutex_unlock(&data->mutex);
return ret;
}
*val = sign_extend32(ret, 15);
*val = sign_extend32(raw_val, 15);
ret = bmg160_set_power_state(data, false);
mutex_unlock(&data->mutex);
if (ret < 0)
@ -807,12 +769,13 @@ static irqreturn_t bmg160_trigger_handler(int irq, void *p)
struct iio_dev *indio_dev = pf->indio_dev;
struct bmg160_data *data = iio_priv(indio_dev);
int bit, ret, i = 0;
unsigned int val;
mutex_lock(&data->mutex);
for_each_set_bit(bit, indio_dev->active_scan_mask,
indio_dev->masklength) {
ret = i2c_smbus_read_word_data(data->client,
BMG160_AXIS_TO_REG(bit));
ret = regmap_bulk_read(data->regmap, BMG160_AXIS_TO_REG(bit),
&val, 2);
if (ret < 0) {
mutex_unlock(&data->mutex);
goto err;
@ -840,12 +803,11 @@ static int bmg160_trig_try_reen(struct iio_trigger *trig)
return 0;
/* Set latched mode interrupt and clear any latched interrupt */
ret = i2c_smbus_write_byte_data(data->client,
BMG160_REG_INT_RST_LATCH,
BMG160_INT_MODE_LATCH_INT |
BMG160_INT_MODE_LATCH_RESET);
ret = regmap_write(data->regmap, BMG160_REG_INT_RST_LATCH,
BMG160_INT_MODE_LATCH_INT |
BMG160_INT_MODE_LATCH_RESET);
if (ret < 0) {
dev_err(&data->client->dev, "Error writing reg_rst_latch\n");
dev_err(data->dev, "Error writing reg_rst_latch\n");
return ret;
}
@ -907,33 +869,34 @@ static irqreturn_t bmg160_event_handler(int irq, void *private)
struct bmg160_data *data = iio_priv(indio_dev);
int ret;
int dir;
unsigned int val;
ret = i2c_smbus_read_byte_data(data->client, BMG160_REG_INT_STATUS_2);
ret = regmap_read(data->regmap, BMG160_REG_INT_STATUS_2, &val);
if (ret < 0) {
dev_err(&data->client->dev, "Error reading reg_int_status2\n");
dev_err(data->dev, "Error reading reg_int_status2\n");
goto ack_intr_status;
}
if (ret & 0x08)
if (val & 0x08)
dir = IIO_EV_DIR_RISING;
else
dir = IIO_EV_DIR_FALLING;
if (ret & BMG160_ANY_MOTION_BIT_X)
if (val & BMG160_ANY_MOTION_BIT_X)
iio_push_event(indio_dev, IIO_MOD_EVENT_CODE(IIO_ANGL_VEL,
0,
IIO_MOD_X,
IIO_EV_TYPE_ROC,
dir),
iio_get_time_ns());
if (ret & BMG160_ANY_MOTION_BIT_Y)
if (val & BMG160_ANY_MOTION_BIT_Y)
iio_push_event(indio_dev, IIO_MOD_EVENT_CODE(IIO_ANGL_VEL,
0,
IIO_MOD_Y,
IIO_EV_TYPE_ROC,
dir),
iio_get_time_ns());
if (ret & BMG160_ANY_MOTION_BIT_Z)
if (val & BMG160_ANY_MOTION_BIT_Z)
iio_push_event(indio_dev, IIO_MOD_EVENT_CODE(IIO_ANGL_VEL,
0,
IIO_MOD_Z,
@ -943,12 +906,11 @@ static irqreturn_t bmg160_event_handler(int irq, void *private)
ack_intr_status:
if (!data->dready_trigger_on) {
ret = i2c_smbus_write_byte_data(data->client,
BMG160_REG_INT_RST_LATCH,
BMG160_INT_MODE_LATCH_INT |
BMG160_INT_MODE_LATCH_RESET);
ret = regmap_write(data->regmap, BMG160_REG_INT_RST_LATCH,
BMG160_INT_MODE_LATCH_INT |
BMG160_INT_MODE_LATCH_RESET);
if (ret < 0)
dev_err(&data->client->dev,
dev_err(data->dev,
"Error writing reg_rst_latch\n");
}
@ -993,18 +955,13 @@ static const struct iio_buffer_setup_ops bmg160_buffer_setup_ops = {
.postdisable = bmg160_buffer_postdisable,
};
static int bmg160_gpio_probe(struct i2c_client *client,
struct bmg160_data *data)
static int bmg160_gpio_probe(struct bmg160_data *data)
{
struct device *dev;
struct gpio_desc *gpio;
int ret;
if (!client)
return -EINVAL;
dev = &client->dev;
dev = data->dev;
/* data ready gpio interrupt pin */
gpio = devm_gpiod_get_index(dev, BMG160_GPIO_NAME, 0, GPIOD_IN);
@ -1013,11 +970,12 @@ static int bmg160_gpio_probe(struct i2c_client *client,
return PTR_ERR(gpio);
}
ret = gpiod_to_irq(gpio);
data->irq = gpiod_to_irq(gpio);
dev_dbg(dev, "GPIO resource, no:%d irq:%d\n", desc_to_gpio(gpio), ret);
dev_dbg(dev, "GPIO resource, no:%d irq:%d\n", desc_to_gpio(gpio),
data->irq);
return ret;
return 0;
}
static const char *bmg160_match_acpi_device(struct device *dev)
@ -1031,21 +989,22 @@ static const char *bmg160_match_acpi_device(struct device *dev)
return dev_name(dev);
}
static int bmg160_probe(struct i2c_client *client,
const struct i2c_device_id *id)
int bmg160_core_probe(struct device *dev, struct regmap *regmap, int irq,
const char *name)
{
struct bmg160_data *data;
struct iio_dev *indio_dev;
int ret;
const char *name = NULL;
indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data));
indio_dev = devm_iio_device_alloc(dev, sizeof(*data));
if (!indio_dev)
return -ENOMEM;
data = iio_priv(indio_dev);
i2c_set_clientdata(client, indio_dev);
data->client = client;
dev_set_drvdata(dev, indio_dev);
data->dev = dev;
data->irq = irq;
data->regmap = regmap;
ret = bmg160_chip_init(data);
if (ret < 0)
@ -1053,25 +1012,22 @@ static int bmg160_probe(struct i2c_client *client,
mutex_init(&data->mutex);
if (id)
name = id->name;
if (ACPI_HANDLE(dev))
name = bmg160_match_acpi_device(dev);
if (ACPI_HANDLE(&client->dev))
name = bmg160_match_acpi_device(&client->dev);
indio_dev->dev.parent = &client->dev;
indio_dev->dev.parent = dev;
indio_dev->channels = bmg160_channels;
indio_dev->num_channels = ARRAY_SIZE(bmg160_channels);
indio_dev->name = name;
indio_dev->modes = INDIO_DIRECT_MODE;
indio_dev->info = &bmg160_info;
if (client->irq <= 0)
client->irq = bmg160_gpio_probe(client, data);
if (data->irq <= 0)
bmg160_gpio_probe(data);
if (client->irq > 0) {
ret = devm_request_threaded_irq(&client->dev,
client->irq,
if (data->irq > 0) {
ret = devm_request_threaded_irq(dev,
data->irq,
bmg160_data_rdy_trig_poll,
bmg160_event_handler,
IRQF_TRIGGER_RISING,
@ -1080,28 +1036,28 @@ static int bmg160_probe(struct i2c_client *client,
if (ret)
return ret;
data->dready_trig = devm_iio_trigger_alloc(&client->dev,
data->dready_trig = devm_iio_trigger_alloc(dev,
"%s-dev%d",
indio_dev->name,
indio_dev->id);
if (!data->dready_trig)
return -ENOMEM;
data->motion_trig = devm_iio_trigger_alloc(&client->dev,
data->motion_trig = devm_iio_trigger_alloc(dev,
"%s-any-motion-dev%d",
indio_dev->name,
indio_dev->id);
if (!data->motion_trig)
return -ENOMEM;
data->dready_trig->dev.parent = &client->dev;
data->dready_trig->dev.parent = dev;
data->dready_trig->ops = &bmg160_trigger_ops;
iio_trigger_set_drvdata(data->dready_trig, indio_dev);
ret = iio_trigger_register(data->dready_trig);
if (ret)
return ret;
data->motion_trig->dev.parent = &client->dev;
data->motion_trig->dev.parent = dev;
data->motion_trig->ops = &bmg160_trigger_ops;
iio_trigger_set_drvdata(data->motion_trig, indio_dev);
ret = iio_trigger_register(data->motion_trig);
@ -1116,25 +1072,25 @@ static int bmg160_probe(struct i2c_client *client,
bmg160_trigger_handler,
&bmg160_buffer_setup_ops);
if (ret < 0) {
dev_err(&client->dev,
dev_err(dev,
"iio triggered buffer setup failed\n");
goto err_trigger_unregister;
}
ret = iio_device_register(indio_dev);
if (ret < 0) {
dev_err(&client->dev, "unable to register iio device\n");
dev_err(dev, "unable to register iio device\n");
goto err_buffer_cleanup;
}
ret = pm_runtime_set_active(&client->dev);
ret = pm_runtime_set_active(dev);
if (ret)
goto err_iio_unregister;
pm_runtime_enable(&client->dev);
pm_runtime_set_autosuspend_delay(&client->dev,
pm_runtime_enable(dev);
pm_runtime_set_autosuspend_delay(dev,
BMG160_AUTO_SUSPEND_DELAY_MS);
pm_runtime_use_autosuspend(&client->dev);
pm_runtime_use_autosuspend(dev);
return 0;
@ -1150,15 +1106,16 @@ err_trigger_unregister:
return ret;
}
EXPORT_SYMBOL_GPL(bmg160_core_probe);
static int bmg160_remove(struct i2c_client *client)
void bmg160_core_remove(struct device *dev)
{
struct iio_dev *indio_dev = i2c_get_clientdata(client);
struct iio_dev *indio_dev = dev_get_drvdata(dev);
struct bmg160_data *data = iio_priv(indio_dev);
pm_runtime_disable(&client->dev);
pm_runtime_set_suspended(&client->dev);
pm_runtime_put_noidle(&client->dev);
pm_runtime_disable(dev);
pm_runtime_set_suspended(dev);
pm_runtime_put_noidle(dev);
iio_device_unregister(indio_dev);
iio_triggered_buffer_cleanup(indio_dev);
@ -1171,14 +1128,13 @@ static int bmg160_remove(struct i2c_client *client)
mutex_lock(&data->mutex);
bmg160_set_mode(data, BMG160_MODE_DEEP_SUSPEND);
mutex_unlock(&data->mutex);
return 0;
}
EXPORT_SYMBOL_GPL(bmg160_core_remove);
#ifdef CONFIG_PM_SLEEP
static int bmg160_suspend(struct device *dev)
{
struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
struct iio_dev *indio_dev = dev_get_drvdata(dev);
struct bmg160_data *data = iio_priv(indio_dev);
mutex_lock(&data->mutex);
@ -1190,7 +1146,7 @@ static int bmg160_suspend(struct device *dev)
static int bmg160_resume(struct device *dev)
{
struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
struct iio_dev *indio_dev = dev_get_drvdata(dev);
struct bmg160_data *data = iio_priv(indio_dev);
mutex_lock(&data->mutex);
@ -1206,13 +1162,13 @@ static int bmg160_resume(struct device *dev)
#ifdef CONFIG_PM
static int bmg160_runtime_suspend(struct device *dev)
{
struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
struct iio_dev *indio_dev = dev_get_drvdata(dev);
struct bmg160_data *data = iio_priv(indio_dev);
int ret;
ret = bmg160_set_mode(data, BMG160_MODE_SUSPEND);
if (ret < 0) {
dev_err(&data->client->dev, "set mode failed\n");
dev_err(data->dev, "set mode failed\n");
return -EAGAIN;
}
@ -1221,7 +1177,7 @@ static int bmg160_runtime_suspend(struct device *dev)
static int bmg160_runtime_resume(struct device *dev)
{
struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
struct iio_dev *indio_dev = dev_get_drvdata(dev);
struct bmg160_data *data = iio_priv(indio_dev);
int ret;
@ -1235,39 +1191,12 @@ static int bmg160_runtime_resume(struct device *dev)
}
#endif
static const struct dev_pm_ops bmg160_pm_ops = {
const struct dev_pm_ops bmg160_pm_ops = {
SET_SYSTEM_SLEEP_PM_OPS(bmg160_suspend, bmg160_resume)
SET_RUNTIME_PM_OPS(bmg160_runtime_suspend,
bmg160_runtime_resume, NULL)
};
static const struct acpi_device_id bmg160_acpi_match[] = {
{"BMG0160", 0},
{"BMI055B", 0},
{},
};
MODULE_DEVICE_TABLE(acpi, bmg160_acpi_match);
static const struct i2c_device_id bmg160_id[] = {
{"bmg160", 0},
{"bmi055_gyro", 0},
{}
};
MODULE_DEVICE_TABLE(i2c, bmg160_id);
static struct i2c_driver bmg160_driver = {
.driver = {
.name = BMG160_DRV_NAME,
.acpi_match_table = ACPI_PTR(bmg160_acpi_match),
.pm = &bmg160_pm_ops,
},
.probe = bmg160_probe,
.remove = bmg160_remove,
.id_table = bmg160_id,
};
module_i2c_driver(bmg160_driver);
EXPORT_SYMBOL_GPL(bmg160_pm_ops);
MODULE_AUTHOR("Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>");
MODULE_LICENSE("GPL v2");

71
drivers/iio/gyro/bmg160_i2c.c Normal file
View File

@ -0,0 +1,71 @@
#include <linux/i2c.h>
#include <linux/regmap.h>
#include <linux/iio/iio.h>
#include <linux/module.h>
#include <linux/acpi.h>
#include "bmg160.h"
static const struct regmap_config bmg160_regmap_i2c_conf = {
.reg_bits = 8,
.val_bits = 8,
.max_register = 0x3f
};
static int bmg160_i2c_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct regmap *regmap;
const char *name = NULL;
regmap = devm_regmap_init_i2c(client, &bmg160_regmap_i2c_conf);
if (IS_ERR(regmap)) {
dev_err(&client->dev, "Failed to register i2c regmap %d\n",
(int)PTR_ERR(regmap));
return PTR_ERR(regmap);
}
if (id)
name = id->name;
return bmg160_core_probe(&client->dev, regmap, client->irq, name);
}
static int bmg160_i2c_remove(struct i2c_client *client)
{
bmg160_core_remove(&client->dev);
return 0;
}
static const struct acpi_device_id bmg160_acpi_match[] = {
{"BMG0160", 0},
{"BMI055B", 0},
{},
};
MODULE_DEVICE_TABLE(acpi, bmg160_acpi_match);
static const struct i2c_device_id bmg160_i2c_id[] = {
{"bmg160", 0},
{"bmi055_gyro", 0},
{}
};
MODULE_DEVICE_TABLE(i2c, bmg160_i2c_id);
static struct i2c_driver bmg160_i2c_driver = {
.driver = {
.name = "bmg160_i2c",
.acpi_match_table = ACPI_PTR(bmg160_acpi_match),
.pm = &bmg160_pm_ops,
},
.probe = bmg160_i2c_probe,
.remove = bmg160_i2c_remove,
.id_table = bmg160_i2c_id,
};
module_i2c_driver(bmg160_i2c_driver);
MODULE_AUTHOR("Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>");
MODULE_LICENSE("GPL v2");
MODULE_DESCRIPTION("BMG160 I2C Gyro driver");

57
drivers/iio/gyro/bmg160_spi.c Normal file
View File

@ -0,0 +1,57 @@
#include <linux/spi/spi.h>
#include <linux/regmap.h>
#include <linux/iio/iio.h>
#include <linux/module.h>
#include "bmg160.h"
static const struct regmap_config bmg160_regmap_spi_conf = {
.reg_bits = 8,
.val_bits = 8,
.max_register = 0x3f,
};
static int bmg160_spi_probe(struct spi_device *spi)
{
struct regmap *regmap;
const struct spi_device_id *id = spi_get_device_id(spi);
regmap = devm_regmap_init_spi(spi, &bmg160_regmap_spi_conf);
if (IS_ERR(regmap)) {
dev_err(&spi->dev, "Failed to register spi regmap %d\n",
(int)PTR_ERR(regmap));
return PTR_ERR(regmap);
}
return bmg160_core_probe(&spi->dev, regmap, spi->irq, id->name);
}
static int bmg160_spi_remove(struct spi_device *spi)
{
bmg160_core_remove(&spi->dev);
return 0;
}
static const struct spi_device_id bmg160_spi_id[] = {
{"bmg160", 0},
{"bmi055_gyro", 0},
{}
};
MODULE_DEVICE_TABLE(spi, bmg160_spi_id);
static struct spi_driver bmg160_spi_driver = {
.driver = {
.name = "bmg160_spi",
.pm = &bmg160_pm_ops,
},
.probe = bmg160_spi_probe,
.remove = bmg160_spi_remove,
.id_table = bmg160_spi_id,
};
module_spi_driver(bmg160_spi_driver);
MODULE_AUTHOR("Markus Pargmann <mpa@pengutronix.de>");
MODULE_LICENSE("GPL v2");
MODULE_DESCRIPTION("BMG160 SPI Gyro driver");

1
drivers/iio/gyro/st_gyro_core.c
View File

@ -383,6 +383,7 @@ static const struct iio_info gyro_info = {
.attrs = &st_gyro_attribute_group,
.read_raw = &st_gyro_read_raw,
.write_raw = &st_gyro_write_raw,
.debugfs_reg_access = &st_sensors_debugfs_reg_access,
};
#ifdef CONFIG_IIO_TRIGGER

10
drivers/iio/humidity/Kconfig
View File

@ -12,6 +12,16 @@ config DHT11
Other sensors should work as well as long as they speak the
same protocol.
config HDC100X
tristate "TI HDC100x relative humidity and temperature sensor"
depends on I2C
help
Say yes here to build support for the TI HDC100x series of
relative humidity and temperature sensors.
To compile this driver as a module, choose M here: the module
will be called hdc100x.
config SI7005
tristate "SI7005 relative humidity and temperature sensor"
depends on I2C

1
drivers/iio/humidity/Makefile
View File

@ -3,5 +3,6 @@
#
obj-$(CONFIG_DHT11) += dht11.o
obj-$(CONFIG_HDC100X) += hdc100x.o
obj-$(CONFIG_SI7005) += si7005.o
obj-$(CONFIG_SI7020) += si7020.o

319
drivers/iio/humidity/hdc100x.c Normal file
View File

@ -0,0 +1,319 @@
/*
* hdc100x.c - Support for the TI HDC100x temperature + humidity sensors
*
* Copyright (C) 2015 Matt Ranostay <mranostay@gmail.com>
*
* 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.
*
*/
#include <linux/delay.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/i2c.h>
#include <linux/iio/iio.h>
#include <linux/iio/sysfs.h>
#define HDC100X_REG_TEMP 0x00
#define HDC100X_REG_HUMIDITY 0x01
#define HDC100X_REG_CONFIG 0x02
#define HDC100X_REG_CONFIG_HEATER_EN BIT(13)
struct hdc100x_data {
struct i2c_client *client;
struct mutex lock;
u16 config;
/* integration time of the sensor */
int adc_int_us[2];
};
/* integration time in us */
static const int hdc100x_int_time[][3] = {
{ 6350, 3650, 0 }, /* IIO_TEMP channel*/
{ 6500, 3850, 2500 }, /* IIO_HUMIDITYRELATIVE channel */
};
/* HDC100X_REG_CONFIG shift and mask values */
static const struct {
int shift;
int mask;
} hdc100x_resolution_shift[2] = {
{ /* IIO_TEMP channel */
.shift = 10,
.mask = 1
},
{ /* IIO_HUMIDITYRELATIVE channel */
.shift = 8,
.mask = 2,
},
};
static IIO_CONST_ATTR(temp_integration_time_available,
"0.00365 0.00635");
static IIO_CONST_ATTR(humidityrelative_integration_time_available,
"0.0025 0.00385 0.0065");
static IIO_CONST_ATTR(out_current_heater_raw_available,
"0 1");
static struct attribute *hdc100x_attributes[] = {
&iio_const_attr_temp_integration_time_available.dev_attr.attr,
&iio_const_attr_humidityrelative_integration_time_available.dev_attr.attr,
&iio_const_attr_out_current_heater_raw_available.dev_attr.attr,
NULL
};
static struct attribute_group hdc100x_attribute_group = {
.attrs = hdc100x_attributes,
};
static const struct iio_chan_spec hdc100x_channels[] = {
{
.type = IIO_TEMP,
.address = HDC100X_REG_TEMP,
.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
BIT(IIO_CHAN_INFO_SCALE) |
BIT(IIO_CHAN_INFO_INT_TIME) |
BIT(IIO_CHAN_INFO_OFFSET),
},
{
.type = IIO_HUMIDITYRELATIVE,
.address = HDC100X_REG_HUMIDITY,
.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
BIT(IIO_CHAN_INFO_SCALE) |
BIT(IIO_CHAN_INFO_INT_TIME)
},
{
.type = IIO_CURRENT,
.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
.extend_name = "heater",
.output = 1,
},
};
static int hdc100x_update_config(struct hdc100x_data *data, int mask, int val)
{
int tmp = (~mask & data->config) | val;
int ret;
ret = i2c_smbus_write_word_swapped(data->client,
HDC100X_REG_CONFIG, tmp);
if (!ret)
data->config = tmp;
return ret;
}
static int hdc100x_set_it_time(struct hdc100x_data *data, int chan, int val2)
{
int shift = hdc100x_resolution_shift[chan].shift;
int ret = -EINVAL;
int i;
for (i = 0; i < ARRAY_SIZE(hdc100x_int_time[chan]); i++) {
if (val2 && val2 == hdc100x_int_time[chan][i]) {
ret = hdc100x_update_config(data,
hdc100x_resolution_shift[chan].mask << shift,
i << shift);
if (!ret)
data->adc_int_us[chan] = val2;
break;
}
}
return ret;
}
static int hdc100x_get_measurement(struct hdc100x_data *data,
struct iio_chan_spec const *chan)
{
struct i2c_client *client = data->client;
int delay = data->adc_int_us[chan->address];
int ret;
int val;
/* start measurement */
ret = i2c_smbus_write_byte(client, chan->address);
if (ret < 0) {
dev_err(&client->dev, "cannot start measurement");
return ret;
}
/* wait for integration time to pass */
usleep_range(delay, delay + 1000);
/*
* i2c_smbus_read_word_data cannot() be used here due to the command
* value not being understood and causes NAKs preventing any reading
* from being accessed.
*/
ret = i2c_smbus_read_byte(client);
if (ret < 0) {
dev_err(&client->dev, "cannot read high byte measurement");
return ret;
}
val = ret << 6;
ret = i2c_smbus_read_byte(client);
if (ret < 0) {
dev_err(&client->dev, "cannot read low byte measurement");
return ret;
}
val |= ret >> 2;
return val;
}
static int hdc100x_get_heater_status(struct hdc100x_data *data)
{
return !!(data->config & HDC100X_REG_CONFIG_HEATER_EN);
}
static int hdc100x_read_raw(struct iio_dev *indio_dev,
struct iio_chan_spec const *chan, int *val,
int *val2, long mask)
{
struct hdc100x_data *data = iio_priv(indio_dev);
switch (mask) {
case IIO_CHAN_INFO_RAW: {
int ret;
mutex_lock(&data->lock);
if (chan->type == IIO_CURRENT) {
*val = hdc100x_get_heater_status(data);
ret = IIO_VAL_INT;
} else {
ret = hdc100x_get_measurement(data, chan);
if (ret >= 0) {
*val = ret;
ret = IIO_VAL_INT;
}
}
mutex_unlock(&data->lock);
return ret;
}
case IIO_CHAN_INFO_INT_TIME:
*val = 0;
*val2 = data->adc_int_us[chan->address];
return IIO_VAL_INT_PLUS_MICRO;
case IIO_CHAN_INFO_SCALE:
if (chan->type == IIO_TEMP) {
*val = 165;
*val2 = 65536 >> 2;
return IIO_VAL_FRACTIONAL;
} else {
*val = 0;
*val2 = 10000;
return IIO_VAL_INT_PLUS_MICRO;
}
break;
case IIO_CHAN_INFO_OFFSET:
*val = -40;
return IIO_VAL_INT;
default:
return -EINVAL;
}
}
static int hdc100x_write_raw(struct iio_dev *indio_dev,
struct iio_chan_spec const *chan,
int val, int val2, long mask)
{
struct hdc100x_data *data = iio_priv(indio_dev);
int ret = -EINVAL;
switch (mask) {
case IIO_CHAN_INFO_INT_TIME:
if (val != 0)
return -EINVAL;
mutex_lock(&data->lock);
ret = hdc100x_set_it_time(data, chan->address, val2);
mutex_unlock(&data->lock);
return ret;
case IIO_CHAN_INFO_RAW:
if (chan->type != IIO_CURRENT || val2 != 0)
return -EINVAL;
mutex_lock(&data->lock);
ret = hdc100x_update_config(data, HDC100X_REG_CONFIG_HEATER_EN,
val ? HDC100X_REG_CONFIG_HEATER_EN : 0);
mutex_unlock(&data->lock);
return ret;
default:
return -EINVAL;
}
}
static const struct iio_info hdc100x_info = {
.read_raw = hdc100x_read_raw,
.write_raw = hdc100x_write_raw,
.attrs = &hdc100x_attribute_group,
.driver_module = THIS_MODULE,
};
static int hdc100x_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct iio_dev *indio_dev;
struct hdc100x_data *data;
if (!i2c_check_functionality(client->adapter,
I2C_FUNC_SMBUS_WORD_DATA | I2C_FUNC_SMBUS_BYTE))
return -ENODEV;
indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data));
if (!indio_dev)
return -ENOMEM;
data = iio_priv(indio_dev);
i2c_set_clientdata(client, indio_dev);
data->client = client;
mutex_init(&data->lock);
indio_dev->dev.parent = &client->dev;
indio_dev->name = dev_name(&client->dev);
indio_dev->modes = INDIO_DIRECT_MODE;
indio_dev->info = &hdc100x_info;
indio_dev->channels = hdc100x_channels;
indio_dev->num_channels = ARRAY_SIZE(hdc100x_channels);
/* be sure we are in a known state */
hdc100x_set_it_time(data, 0, hdc100x_int_time[0][0]);
hdc100x_set_it_time(data, 1, hdc100x_int_time[1][0]);
return devm_iio_device_register(&client->dev, indio_dev);
}
static const struct i2c_device_id hdc100x_id[] = {
{ "hdc100x", 0 },
{ }
};
MODULE_DEVICE_TABLE(i2c, hdc100x_id);
static struct i2c_driver hdc100x_driver = {
.driver = {
.name = "hdc100x",
},
.probe = hdc100x_probe,
.id_table = hdc100x_id,
};
module_i2c_driver(hdc100x_driver);
MODULE_AUTHOR("Matt Ranostay <mranostay@gmail.com>");
MODULE_DESCRIPTION("TI HDC100x humidity and temperature sensor driver");
MODULE_LICENSE("GPL");

6
drivers/iio/humidity/si7020.c
View File

@ -57,8 +57,12 @@ static int si7020_read_raw(struct iio_dev *indio_dev,
if (ret < 0)
return ret;
*val = ret >> 2;
/*
* Humidity values can slightly exceed the 0-100%RH
* range and should be corrected by software
*/
if (chan->type == IIO_HUMIDITYRELATIVE)
*val &= GENMASK(11, 0);
*val = clamp_val(*val, 786, 13893);
return IIO_VAL_INT;
case IIO_CHAN_INFO_SCALE:
if (chan->type == IIO_TEMP)

10
drivers/iio/industrialio-core.c
View File

@ -75,6 +75,8 @@ static const char * const iio_chan_type_name_spec[] = {
[IIO_ENERGY] = "energy",
[IIO_DISTANCE] = "distance",
[IIO_VELOCITY] = "velocity",
[IIO_CONCENTRATION] = "concentration",
[IIO_RESISTANCE] = "resistance",
};
static const char * const iio_modifier_names[] = {
@ -111,6 +113,8 @@ static const char * const iio_modifier_names[] = {
[IIO_MOD_ROOT_SUM_SQUARED_X_Y_Z] = "sqrt(x^2+y^2+z^2)",
[IIO_MOD_I] = "i",
[IIO_MOD_Q] = "q",
[IIO_MOD_CO2] = "co2",
[IIO_MOD_VOC] = "voc",
};
/* relies on pairs of these shared then separate */
@ -962,7 +966,7 @@ static void iio_device_unregister_sysfs(struct iio_dev *indio_dev)
static void iio_dev_release(struct device *device)
{
struct iio_dev *indio_dev = dev_to_iio_dev(device);
if (indio_dev->modes & INDIO_BUFFER_TRIGGERED)
if (indio_dev->modes & (INDIO_BUFFER_TRIGGERED | INDIO_EVENT_TRIGGERED))
iio_device_unregister_trigger_consumer(indio_dev);
iio_device_unregister_eventset(indio_dev);
iio_device_unregister_sysfs(indio_dev);
@ -1153,6 +1157,8 @@ static long iio_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
if (cmd == IIO_GET_EVENT_FD_IOCTL) {
fd = iio_event_getfd(indio_dev);
if (fd < 0)
return fd;
if (copy_to_user(ip, &fd, sizeof(fd)))
return -EFAULT;
return 0;
@ -1241,7 +1247,7 @@ int iio_device_register(struct iio_dev *indio_dev)
"Failed to register event set\n");
goto error_free_sysfs;
}
if (indio_dev->modes & INDIO_BUFFER_TRIGGERED)
if (indio_dev->modes & (INDIO_BUFFER_TRIGGERED | INDIO_EVENT_TRIGGERED))
iio_device_register_trigger_consumer(indio_dev);
if ((indio_dev->modes & INDIO_ALL_BUFFER_MODES) &&

12
drivers/iio/industrialio-trigger.c
View File

@ -366,10 +366,18 @@ static ssize_t iio_trigger_write_current(struct device *dev,
indio_dev->trig = trig;
if (oldtrig)
if (oldtrig) {
if (indio_dev->modes & INDIO_EVENT_TRIGGERED)
iio_trigger_detach_poll_func(oldtrig,
indio_dev->pollfunc_event);
iio_trigger_put(oldtrig);
if (indio_dev->trig)
}
if (indio_dev->trig) {
iio_trigger_get(indio_dev->trig);
if (indio_dev->modes & INDIO_EVENT_TRIGGERED)
iio_trigger_attach_poll_func(indio_dev->trig,
indio_dev->pollfunc_event);
}
return len;
}

68
drivers/iio/industrialio-triggered-event.c Normal file
View File

@ -0,0 +1,68 @@
/*
* Copyright (C) 2015 Cogent Embedded, Inc.
*
* 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.
*/
#include <linux/kernel.h>
#include <linux/export.h>
#include <linux/module.h>
#include <linux/iio/iio.h>
#include <linux/iio/triggered_event.h>
#include <linux/iio/trigger_consumer.h>
/**
* iio_triggered_event_setup() - Setup pollfunc_event for triggered event
* @indio_dev: IIO device structure
* @h: Function which will be used as pollfunc_event top half
* @thread: Function which will be used as pollfunc_event bottom half
*
* This function combines some common tasks which will normally be performed
* when setting up a triggered event. It will allocate the pollfunc_event and
* set mode to use it for triggered event.
*
* Before calling this function the indio_dev structure should already be
* completely initialized, but not yet registered. In practice this means that
* this function should be called right before iio_device_register().
*
* To free the resources allocated by this function call
* iio_triggered_event_cleanup().
*/
int iio_triggered_event_setup(struct iio_dev *indio_dev,
irqreturn_t (*h)(int irq, void *p),
irqreturn_t (*thread)(int irq, void *p))
{
indio_dev->pollfunc_event = iio_alloc_pollfunc(h,
thread,
IRQF_ONESHOT,
indio_dev,
"%s_consumer%d",
indio_dev->name,
indio_dev->id);
if (indio_dev->pollfunc_event == NULL)
return -ENOMEM;
/* Flag that events polling is possible */
indio_dev->modes |= INDIO_EVENT_TRIGGERED;
return 0;
}
EXPORT_SYMBOL(iio_triggered_event_setup);
/**
* iio_triggered_event_cleanup() - Free resources allocated by iio_triggered_event_setup()
* @indio_dev: IIO device structure
*/
void iio_triggered_event_cleanup(struct iio_dev *indio_dev)
{
indio_dev->modes &= ~INDIO_EVENT_TRIGGERED;
iio_dealloc_pollfunc(indio_dev->pollfunc_event);
}
EXPORT_SYMBOL(iio_triggered_event_cleanup);
MODULE_AUTHOR("Vladimir Barinov");
MODULE_DESCRIPTION("IIO helper functions for setting up triggered events");
MODULE_LICENSE("GPL");

23
drivers/iio/light/Kconfig
View File

@ -50,6 +50,19 @@ config APDS9300
To compile this driver as a module, choose M here: the
module will be called apds9300.
config APDS9960
tristate "Avago APDS9960 gesture/RGB/ALS/proximity sensor"
select REGMAP_I2C
select IIO_BUFFER
select IIO_KFIFO_BUF
depends on I2C
help
Say Y here to build I2C interface support for the Avago
APDS9960 gesture/RGB/ALS/proximity sensor.
To compile this driver as a module, choose M here: the
module will be called apds9960
config BH1750
tristate "ROHM BH1750 ambient light sensor"
depends on I2C
@ -287,6 +300,16 @@ config TSL4531
To compile this driver as a module, choose M here: the
module will be called tsl4531.
config US5182D
tristate "UPISEMI light and proximity sensor"
depends on I2C
help
If you say yes here you get support for the UPISEMI US5182D
ambient light and proximity sensor.
This driver can also be built as a module. If so, the module
will be called us5182d.
config VCNL4000
tristate "VCNL4000 combined ALS and proximity sensor"
depends on I2C

2
drivers/iio/light/Makefile
View File

@ -7,6 +7,7 @@ obj-$(CONFIG_ACPI_ALS) += acpi-als.o
obj-$(CONFIG_ADJD_S311) += adjd_s311.o
obj-$(CONFIG_AL3320A) += al3320a.o
obj-$(CONFIG_APDS9300) += apds9300.o
obj-$(CONFIG_APDS9960) += apds9960.o
obj-$(CONFIG_BH1750) += bh1750.o
obj-$(CONFIG_CM32181) += cm32181.o
obj-$(CONFIG_CM3232) += cm3232.o
@ -27,4 +28,5 @@ obj-$(CONFIG_STK3310) += stk3310.o
obj-$(CONFIG_TCS3414) += tcs3414.o
obj-$(CONFIG_TCS3472) += tcs3472.o
obj-$(CONFIG_TSL4531) += tsl4531.o
obj-$(CONFIG_US5182D) += us5182d.o
obj-$(CONFIG_VCNL4000) += vcnl4000.o

1130
drivers/iio/light/apds9960.c Normal file
View File

File diff suppressed because it is too large Load Diff

1
drivers/iio/light/opt3001.c
View File

@ -793,7 +793,6 @@ static struct i2c_driver opt3001_driver = {
.driver = {
.name = "opt3001",
.of_match_table = of_match_ptr(opt3001_of_match),
.owner = THIS_MODULE,
},
};

75
drivers/iio/light/stk3310.c
View File

@ -35,8 +35,8 @@
#define STK3310_REG_ID 0x3E
#define STK3310_MAX_REG 0x80
#define STK3310_STATE_EN_PS 0x01
#define STK3310_STATE_EN_ALS 0x02
#define STK3310_STATE_EN_PS BIT(0)
#define STK3310_STATE_EN_ALS BIT(1)
#define STK3310_STATE_STANDBY 0x00
#define STK3310_CHIP_ID_VAL 0x13
@ -241,8 +241,11 @@ static int stk3310_write_event(struct iio_dev *indio_dev,
struct stk3310_data *data = iio_priv(indio_dev);
struct i2c_client *client = data->client;
regmap_field_read(data->reg_ps_gain, &index);
if (val > stk3310_ps_max[index])
ret = regmap_field_read(data->reg_ps_gain, &index);
if (ret < 0)
return ret;
if (val < 0 || val > stk3310_ps_max[index])
return -EINVAL;
if (dir == IIO_EV_DIR_RISING)
@ -266,9 +269,12 @@ static int stk3310_read_event_config(struct iio_dev *indio_dev,
enum iio_event_direction dir)
{
unsigned int event_val;
int ret;
struct stk3310_data *data = iio_priv(indio_dev);
regmap_field_read(data->reg_int_ps, &event_val);
ret = regmap_field_read(data->reg_int_ps, &event_val);
if (ret < 0)
return ret;
return event_val;
}
@ -307,14 +313,16 @@ static int stk3310_read_raw(struct iio_dev *indio_dev,
struct stk3310_data *data = iio_priv(indio_dev);
struct i2c_client *client = data->client;
if (chan->type != IIO_LIGHT && chan->type != IIO_PROXIMITY)
return -EINVAL;
switch (mask) {
case IIO_CHAN_INFO_RAW:
if (chan->type == IIO_LIGHT)
reg = STK3310_REG_ALS_DATA_MSB;
else if (chan->type == IIO_PROXIMITY)
reg = STK3310_REG_PS_DATA_MSB;
else
return -EINVAL;
reg = STK3310_REG_PS_DATA_MSB;
mutex_lock(&data->lock);
ret = regmap_bulk_read(data->regmap, reg, &buf, 2);
if (ret < 0) {
@ -327,17 +335,23 @@ static int stk3310_read_raw(struct iio_dev *indio_dev,
return IIO_VAL_INT;
case IIO_CHAN_INFO_INT_TIME:
if (chan->type == IIO_LIGHT)
regmap_field_read(data->reg_als_it, &index);
ret = regmap_field_read(data->reg_als_it, &index);
else
regmap_field_read(data->reg_ps_it, &index);
ret = regmap_field_read(data->reg_ps_it, &index);
if (ret < 0)
return ret;
*val = stk3310_it_table[index][0];
*val2 = stk3310_it_table[index][1];
return IIO_VAL_INT_PLUS_MICRO;
case IIO_CHAN_INFO_SCALE:
if (chan->type == IIO_LIGHT)
regmap_field_read(data->reg_als_gain, &index);
ret = regmap_field_read(data->reg_als_gain, &index);
else
regmap_field_read(data->reg_ps_gain, &index);
ret = regmap_field_read(data->reg_ps_gain, &index);
if (ret < 0)
return ret;
*val = stk3310_scale_table[index][0];
*val2 = stk3310_scale_table[index][1];
return IIO_VAL_INT_PLUS_MICRO;
@ -354,6 +368,9 @@ static int stk3310_write_raw(struct iio_dev *indio_dev,
int index;
struct stk3310_data *data = iio_priv(indio_dev);
if (chan->type != IIO_LIGHT && chan->type != IIO_PROXIMITY)
return -EINVAL;
switch (mask) {
case IIO_CHAN_INFO_INT_TIME:
index = stk3310_get_index(stk3310_it_table,
@ -368,7 +385,7 @@ static int stk3310_write_raw(struct iio_dev *indio_dev,
ret = regmap_field_write(data->reg_ps_it, index);
if (ret < 0)
dev_err(&data->client->dev,
"sensor configuration failed\n");
"sensor configuration failed\n");
mutex_unlock(&data->lock);
return ret;
@ -385,7 +402,7 @@ static int stk3310_write_raw(struct iio_dev *indio_dev,
ret = regmap_field_write(data->reg_ps_gain, index);
if (ret < 0)
dev_err(&data->client->dev,
"sensor configuration failed\n");
"sensor configuration failed\n");
mutex_unlock(&data->lock);
return ret;
}
@ -419,8 +436,8 @@ static int stk3310_set_state(struct stk3310_data *data, u8 state)
dev_err(&client->dev, "failed to change sensor state\n");
} else if (state != STK3310_STATE_STANDBY) {
/* Don't reset the 'enabled' flags if we're going in standby */
data->ps_enabled = !!(state & 0x01);
data->als_enabled = !!(state & 0x02);
data->ps_enabled = !!(state & STK3310_STATE_EN_PS);
data->als_enabled = !!(state & STK3310_STATE_EN_ALS);
}
mutex_unlock(&data->lock);
@ -435,7 +452,10 @@ static int stk3310_init(struct iio_dev *indio_dev)
struct stk3310_data *data = iio_priv(indio_dev);
struct i2c_client *client = data->client;
regmap_read(data->regmap, STK3310_REG_ID, &chipid);
ret = regmap_read(data->regmap, STK3310_REG_ID, &chipid);
if (ret < 0)
return ret;
if (chipid != STK3310_CHIP_ID_VAL &&
chipid != STK3311_CHIP_ID_VAL) {
dev_err(&client->dev, "invalid chip id: 0x%x\n", chipid);
@ -604,8 +624,13 @@ static int stk3310_probe(struct i2c_client *client,
if (ret < 0)
return ret;
if (client->irq < 0)
if (client->irq < 0) {
client->irq = stk3310_gpio_probe(client);
if (client->irq < 0) {
ret = client->irq;
goto err_standby;
}
}
if (client->irq >= 0) {
ret = devm_request_threaded_irq(&client->dev, client->irq,
@ -614,17 +639,23 @@ static int stk3310_probe(struct i2c_client *client,
IRQF_TRIGGER_FALLING |
IRQF_ONESHOT,
STK3310_EVENT, indio_dev);
if (ret < 0)
if (ret < 0) {
dev_err(&client->dev, "request irq %d failed\n",
client->irq);
client->irq);
goto err_standby;
}
}
ret = iio_device_register(indio_dev);
if (ret < 0) {
dev_err(&client->dev, "device_register failed\n");
stk3310_set_state(data, STK3310_STATE_STANDBY);
goto err_standby;
}
return 0;
err_standby:
stk3310_set_state(data, STK3310_STATE_STANDBY);
return ret;
}
@ -648,7 +679,7 @@ static int stk3310_suspend(struct device *dev)
static int stk3310_resume(struct device *dev)
{
int state = 0;
u8 state = 0;
struct stk3310_data *data;
data = iio_priv(i2c_get_clientdata(to_i2c_client(dev)));

9
drivers/iio/light/tsl4531.c
View File

@ -158,9 +158,9 @@ static int tsl4531_check_id(struct i2c_client *client)
case TSL45313_ID:
case TSL45315_ID:
case TSL45317_ID:
return 1;
default:
return 0;
default:
return -ENODEV;
}
}
@ -180,9 +180,10 @@ static int tsl4531_probe(struct i2c_client *client,
data->client = client;
mutex_init(&data->lock);
if (!tsl4531_check_id(client)) {
ret = tsl4531_check_id(client);
if (ret) {
dev_err(&client->dev, "no TSL4531 sensor\n");
return -ENODEV;
return ret;
}
ret = i2c_smbus_write_byte_data(data->client, TSL4531_CONTROL,

507
drivers/iio/light/us5182d.c Normal file
View File

@ -0,0 +1,507 @@
/*
* Copyright (c) 2015 Intel Corporation
*
* Driver for UPISEMI us5182d Proximity and Ambient Light Sensor.
*
* 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.
*
* This program is distributed in the hope 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.
*
* To do: Interrupt support.
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/acpi.h>
#include <linux/delay.h>
#include <linux/i2c.h>
#include <linux/iio/iio.h>
#include <linux/iio/sysfs.h>
#include <linux/mutex.h>
#define US5182D_REG_CFG0 0x00
#define US5182D_CFG0_ONESHOT_EN BIT(6)
#define US5182D_CFG0_SHUTDOWN_EN BIT(7)
#define US5182D_CFG0_WORD_ENABLE BIT(0)
#define US5182D_REG_CFG1 0x01
#define US5182D_CFG1_ALS_RES16 BIT(4)
#define US5182D_CFG1_AGAIN_DEFAULT 0x00
#define US5182D_REG_CFG2 0x02
#define US5182D_CFG2_PX_RES16 BIT(4)
#define US5182D_CFG2_PXGAIN_DEFAULT BIT(2)
#define US5182D_REG_CFG3 0x03
#define US5182D_CFG3_LED_CURRENT100 (BIT(4) | BIT(5))
#define US5182D_REG_CFG4 0x10
/*
* Registers for tuning the auto dark current cancelling feature.
* DARK_TH(reg 0x27,0x28) - threshold (counts) for auto dark cancelling.
* when ALS > DARK_TH --> ALS_Code = ALS - Upper(0x2A) * Dark
* when ALS < DARK_TH --> ALS_Code = ALS - Lower(0x29) * Dark
*/
#define US5182D_REG_UDARK_TH 0x27
#define US5182D_REG_DARK_AUTO_EN 0x2b
#define US5182D_REG_AUTO_LDARK_GAIN 0x29
#define US5182D_REG_AUTO_HDARK_GAIN 0x2a
#define US5182D_OPMODE_ALS 0x01
#define US5182D_OPMODE_PX 0x02
#define US5182D_OPMODE_SHIFT 4
#define US5182D_REG_DARK_AUTO_EN_DEFAULT 0x80
#define US5182D_REG_AUTO_LDARK_GAIN_DEFAULT 0x16
#define US5182D_REG_AUTO_HDARK_GAIN_DEFAULT 0x00
#define US5182D_REG_ADL 0x0c
#define US5182D_REG_PDL 0x0e
#define US5182D_REG_MODE_STORE 0x21
#define US5182D_STORE_MODE 0x01
#define US5182D_REG_CHIPID 0xb2
#define US5182D_OPMODE_MASK GENMASK(5, 4)
#define US5182D_AGAIN_MASK 0x07
#define US5182D_RESET_CHIP 0x01
#define US5182D_CHIPID 0x26
#define US5182D_DRV_NAME "us5182d"
#define US5182D_GA_RESOLUTION 1000
#define US5182D_READ_BYTE 1
#define US5182D_READ_WORD 2
#define US5182D_OPSTORE_SLEEP_TIME 20 /* ms */
/* Available ranges: [12354, 7065, 3998, 2202, 1285, 498, 256, 138] lux */
static const int us5182d_scales[] = {188500, 107800, 61000, 33600, 19600, 7600,
3900, 2100};
/*
* Experimental thresholds that work with US5182D sensor on evaluation board
* roughly between 12-32 lux
*/
static u16 us5182d_dark_ths_vals[] = {170, 200, 512, 512, 800, 2000, 4000,
8000};
enum mode {
US5182D_ALS_PX,
US5182D_ALS_ONLY,
US5182D_PX_ONLY
};
struct us5182d_data {
struct i2c_client *client;
struct mutex lock;
/* Glass attenuation factor */
u32 ga;
/* Dark gain tuning */
u8 lower_dark_gain;
u8 upper_dark_gain;
u16 *us5182d_dark_ths;
u8 opmode;
};
static IIO_CONST_ATTR(in_illuminance_scale_available,
"0.0021 0.0039 0.0076 0.0196 0.0336 0.061 0.1078 0.1885");
static struct attribute *us5182d_attrs[] = {
&iio_const_attr_in_illuminance_scale_available.dev_attr.attr,
NULL
};
static const struct attribute_group us5182d_attr_group = {
.attrs = us5182d_attrs,
};
static const struct {
u8 reg;
u8 val;
} us5182d_regvals[] = {
{US5182D_REG_CFG0, (US5182D_CFG0_SHUTDOWN_EN |
US5182D_CFG0_WORD_ENABLE)},
{US5182D_REG_CFG1, US5182D_CFG1_ALS_RES16},
{US5182D_REG_CFG2, (US5182D_CFG2_PX_RES16 |
US5182D_CFG2_PXGAIN_DEFAULT)},
{US5182D_REG_CFG3, US5182D_CFG3_LED_CURRENT100},
{US5182D_REG_MODE_STORE, US5182D_STORE_MODE},
{US5182D_REG_CFG4, 0x00},
};
static const struct iio_chan_spec us5182d_channels[] = {
{
.type = IIO_LIGHT,
.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
BIT(IIO_CHAN_INFO_SCALE),
},
{
.type = IIO_PROXIMITY,
.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
}
};
static int us5182d_get_als(struct us5182d_data *data)
{
int ret;
unsigned long result;
ret = i2c_smbus_read_word_data(data->client,
US5182D_REG_ADL);
if (ret < 0)
return ret;
result = ret * data->ga / US5182D_GA_RESOLUTION;
if (result > 0xffff)
result = 0xffff;
return result;
}
static int us5182d_set_opmode(struct us5182d_data *data, u8 mode)
{
int ret;
ret = i2c_smbus_read_byte_data(data->client, US5182D_REG_CFG0);
if (ret < 0)
return ret;
/*
* In oneshot mode the chip will power itself down after taking the
* required measurement.
*/
ret = ret | US5182D_CFG0_ONESHOT_EN;
/* update mode */
ret = ret & ~US5182D_OPMODE_MASK;
ret = ret | (mode << US5182D_OPMODE_SHIFT);
/*
* After updating the operating mode, the chip requires that
* the operation is stored, by writing 1 in the STORE_MODE
* register (auto-clearing).
*/
ret = i2c_smbus_write_byte_data(data->client, US5182D_REG_CFG0, ret);
if (ret < 0)
return ret;
if (mode == data->opmode)
return 0;
ret = i2c_smbus_write_byte_data(data->client, US5182D_REG_MODE_STORE,
US5182D_STORE_MODE);
if (ret < 0)
return ret;
data->opmode = mode;
msleep(US5182D_OPSTORE_SLEEP_TIME);
return 0;
}
static int us5182d_read_raw(struct iio_dev *indio_dev,
struct iio_chan_spec const *chan, int *val,
int *val2, long mask)
{
struct us5182d_data *data = iio_priv(indio_dev);
int ret;
switch (mask) {
case IIO_CHAN_INFO_RAW:
switch (chan->type) {
case IIO_LIGHT:
mutex_lock(&data->lock);
ret = us5182d_set_opmode(data, US5182D_OPMODE_ALS);
if (ret < 0)
goto out_err;
ret = us5182d_get_als(data);
if (ret < 0)
goto out_err;
mutex_unlock(&data->lock);
*val = ret;
return IIO_VAL_INT;
case IIO_PROXIMITY:
mutex_lock(&data->lock);
ret = us5182d_set_opmode(data, US5182D_OPMODE_PX);
if (ret < 0)
goto out_err;
ret = i2c_smbus_read_word_data(data->client,
US5182D_REG_PDL);
if (ret < 0)
goto out_err;
mutex_unlock(&data->lock);
*val = ret;
return IIO_VAL_INT;
default:
return -EINVAL;
}
case IIO_CHAN_INFO_SCALE:
ret = i2c_smbus_read_byte_data(data->client, US5182D_REG_CFG1);
if (ret < 0)
return ret;
*val = 0;
*val2 = us5182d_scales[ret & US5182D_AGAIN_MASK];
return IIO_VAL_INT_PLUS_MICRO;
default:
return -EINVAL;
}
return -EINVAL;
out_err:
mutex_unlock(&data->lock);
return ret;
}
/**
* us5182d_update_dark_th - update Darh_Th registers
* @data us5182d_data structure
* @index index in us5182d_dark_ths array to use for the updated value
*
* Function needs to be called with a lock held because it needs two i2c write
* byte operations as these registers (0x27 0x28) don't work in word mode
* accessing.
*/
static int us5182d_update_dark_th(struct us5182d_data *data, int index)
{
__be16 dark_th = cpu_to_be16(data->us5182d_dark_ths[index]);
int ret;
ret = i2c_smbus_write_byte_data(data->client, US5182D_REG_UDARK_TH,
((u8 *)&dark_th)[0]);
if (ret < 0)
return ret;
return i2c_smbus_write_byte_data(data->client, US5182D_REG_UDARK_TH + 1,
((u8 *)&dark_th)[1]);
}
/**
* us5182d_apply_scale - update the ALS scale
* @data us5182d_data structure
* @index index in us5182d_scales array to use for the updated value
*
* Function needs to be called with a lock held as we're having more than one
* i2c operation.
*/
static int us5182d_apply_scale(struct us5182d_data *data, int index)
{
int ret;
ret = i2c_smbus_read_byte_data(data->client, US5182D_REG_CFG1);
if (ret < 0)
return ret;
ret = ret & (~US5182D_AGAIN_MASK);
ret |= index;
ret = i2c_smbus_write_byte_data(data->client, US5182D_REG_CFG1, ret);
if (ret < 0)
return ret;
return us5182d_update_dark_th(data, index);
}
static int us5182d_write_raw(struct iio_dev *indio_dev,
struct iio_chan_spec const *chan, int val,
int val2, long mask)
{
struct us5182d_data *data = iio_priv(indio_dev);
int ret, i;
switch (mask) {
case IIO_CHAN_INFO_SCALE:
if (val != 0)
return -EINVAL;
for (i = 0; i < ARRAY_SIZE(us5182d_scales); i++)
if (val2 == us5182d_scales[i]) {
mutex_lock(&data->lock);
ret = us5182d_apply_scale(data, i);
mutex_unlock(&data->lock);
return ret;
}
break;
default:
return -EINVAL;
}
return -EINVAL;
}
static const struct iio_info us5182d_info = {
.driver_module = THIS_MODULE,
.read_raw = us5182d_read_raw,
.write_raw = us5182d_write_raw,
.attrs = &us5182d_attr_group,
};
static int us5182d_reset(struct iio_dev *indio_dev)
{
struct us5182d_data *data = iio_priv(indio_dev);
return i2c_smbus_write_byte_data(data->client, US5182D_REG_CFG3,
US5182D_RESET_CHIP);
}
static int us5182d_init(struct iio_dev *indio_dev)
{
struct us5182d_data *data = iio_priv(indio_dev);
int i, ret;
ret = us5182d_reset(indio_dev);
if (ret < 0)
return ret;
data->opmode = 0;
for (i = 0; i < ARRAY_SIZE(us5182d_regvals); i++) {
ret = i2c_smbus_write_byte_data(data->client,
us5182d_regvals[i].reg,
us5182d_regvals[i].val);
if (ret < 0)
return ret;
}
return 0;
}
static void us5182d_get_platform_data(struct iio_dev *indio_dev)
{
struct us5182d_data *data = iio_priv(indio_dev);
if (device_property_read_u32(&data->client->dev, "upisemi,glass-coef",
&data->ga))
data->ga = US5182D_GA_RESOLUTION;
if (device_property_read_u16_array(&data->client->dev,
"upisemi,dark-ths",
data->us5182d_dark_ths,
ARRAY_SIZE(us5182d_dark_ths_vals)))
data->us5182d_dark_ths = us5182d_dark_ths_vals;
if (device_property_read_u8(&data->client->dev,
"upisemi,upper-dark-gain",
&data->upper_dark_gain))
data->upper_dark_gain = US5182D_REG_AUTO_HDARK_GAIN_DEFAULT;
if (device_property_read_u8(&data->client->dev,
"upisemi,lower-dark-gain",
&data->lower_dark_gain))
data->lower_dark_gain = US5182D_REG_AUTO_LDARK_GAIN_DEFAULT;
}
static int us5182d_dark_gain_config(struct iio_dev *indio_dev)
{
struct us5182d_data *data = iio_priv(indio_dev);
int ret;
ret = us5182d_update_dark_th(data, US5182D_CFG1_AGAIN_DEFAULT);
if (ret < 0)
return ret;
ret = i2c_smbus_write_byte_data(data->client,
US5182D_REG_AUTO_LDARK_GAIN,
data->lower_dark_gain);
if (ret < 0)
return ret;
ret = i2c_smbus_write_byte_data(data->client,
US5182D_REG_AUTO_HDARK_GAIN,
data->upper_dark_gain);
if (ret < 0)
return ret;
return i2c_smbus_write_byte_data(data->client, US5182D_REG_DARK_AUTO_EN,
US5182D_REG_DARK_AUTO_EN_DEFAULT);
}
static int us5182d_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct us5182d_data *data;
struct iio_dev *indio_dev;
int ret;
indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data));
if (!indio_dev)
return -ENOMEM;
data = iio_priv(indio_dev);
i2c_set_clientdata(client, indio_dev);
data->client = client;
mutex_init(&data->lock);
indio_dev->dev.parent = &client->dev;
indio_dev->info = &us5182d_info;
indio_dev->name = US5182D_DRV_NAME;
indio_dev->channels = us5182d_channels;
indio_dev->num_channels = ARRAY_SIZE(us5182d_channels);
indio_dev->modes = INDIO_DIRECT_MODE;
ret = i2c_smbus_read_byte_data(data->client, US5182D_REG_CHIPID);
if (ret != US5182D_CHIPID) {
dev_err(&data->client->dev,
"Failed to detect US5182 light chip\n");
return (ret < 0) ? ret : -ENODEV;
}
us5182d_get_platform_data(indio_dev);
ret = us5182d_init(indio_dev);
if (ret < 0)
return ret;
ret = us5182d_dark_gain_config(indio_dev);
if (ret < 0)
return ret;
return iio_device_register(indio_dev);
}
static int us5182d_remove(struct i2c_client *client)
{
iio_device_unregister(i2c_get_clientdata(client));
return i2c_smbus_write_byte_data(client, US5182D_REG_CFG0,
US5182D_CFG0_SHUTDOWN_EN);
}
static const struct acpi_device_id us5182d_acpi_match[] = {
{ "USD5182", 0},
{}
};
MODULE_DEVICE_TABLE(acpi, us5182d_acpi_match);
static const struct i2c_device_id us5182d_id[] = {
{"usd5182", 0},
{}
};
MODULE_DEVICE_TABLE(i2c, us5182d_id);
static struct i2c_driver us5182d_driver = {
.driver = {
.name = US5182D_DRV_NAME,
.acpi_match_table = ACPI_PTR(us5182d_acpi_match),
},
.probe = us5182d_probe,
.remove = us5182d_remove,
.id_table = us5182d_id,
};
module_i2c_driver(us5182d_driver);
MODULE_AUTHOR("Adriana Reus <adriana.reus@intel.com>");
MODULE_DESCRIPTION("Driver for us5182d Proximity and Light Sensor");
MODULE_LICENSE("GPL v2");

33
drivers/iio/magnetometer/Kconfig
View File

@ -24,6 +24,24 @@ config AK09911
help
Deprecated: AK09911 is now supported by AK8975 driver.
config BMC150_MAGN
tristate "Bosch BMC150 Magnetometer Driver"
depends on I2C
select REGMAP_I2C
select IIO_BUFFER
select IIO_TRIGGERED_BUFFER
help
Say yes here to build support for the BMC150 magnetometer.
Currently this only supports the device via an i2c interface.
This is a combo module with both accelerometer and magnetometer.
This driver is only implementing magnetometer part, which has
its own address and register map.
To compile this driver as a module, choose M here: the module will be
called bmc150_magn.
config MAG3110
tristate "Freescale MAG3110 3-Axis Magnetometer"
depends on I2C
@ -87,19 +105,4 @@ config IIO_ST_MAGN_SPI_3AXIS
depends on IIO_ST_MAGN_3AXIS
depends on IIO_ST_SENSORS_SPI
config BMC150_MAGN
tristate "Bosch BMC150 Magnetometer Driver"
depends on I2C
select REGMAP_I2C
select IIO_BUFFER
select IIO_TRIGGERED_BUFFER
help
Say yes here to build support for the BMC150 magnetometer.
Currently this only supports the device via an i2c interface.
This is a combo module with both accelerometer and magnetometer.
This driver is only implementing magnetometer part, which has
its own address and register map.
endmenu

3
drivers/iio/magnetometer/Makefile
View File

@ -4,6 +4,7 @@
# When adding new entries keep the list in alphabetical order
obj-$(CONFIG_AK8975) += ak8975.o
obj-$(CONFIG_BMC150_MAGN) += bmc150_magn.o
obj-$(CONFIG_MAG3110) += mag3110.o
obj-$(CONFIG_HID_SENSOR_MAGNETOMETER_3D) += hid-sensor-magn-3d.o
obj-$(CONFIG_MMC35240) += mmc35240.o
@ -14,5 +15,3 @@ st_magn-$(CONFIG_IIO_BUFFER) += st_magn_buffer.o
obj-$(CONFIG_IIO_ST_MAGN_I2C_3AXIS) += st_magn_i2c.o
obj-$(CONFIG_IIO_ST_MAGN_SPI_3AXIS) += st_magn_spi.o
obj-$(CONFIG_BMC150_MAGN) += bmc150_magn.o

1
drivers/iio/magnetometer/st_magn_core.c
View File

@ -560,6 +560,7 @@ static const struct iio_info magn_info = {
.attrs = &st_magn_attribute_group,
.read_raw = &st_magn_read_raw,
.write_raw = &st_magn_write_raw,
.debugfs_reg_access = &st_sensors_debugfs_reg_access,
};
#ifdef CONFIG_IIO_TRIGGER

1
drivers/iio/pressure/st_pressure_core.c
View File

@ -400,6 +400,7 @@ static const struct iio_info press_info = {
.attrs = &st_press_attribute_group,
.read_raw = &st_press_read_raw,
.write_raw = &st_press_write_raw,
.debugfs_reg_access = &st_sensors_debugfs_reg_access,
};
#ifdef CONFIG_IIO_TRIGGER

12
drivers/iio/proximity/Kconfig
View File

@ -20,6 +20,18 @@ endmenu
menu "Proximity sensors"
config LIDAR_LITE_V2
tristate "PulsedLight LIDAR sensor"
select IIO_BUFFER
select IIO_TRIGGERED_BUFFER
depends on I2C
help
Say Y to build a driver for PulsedLight LIDAR range finding
sensor.
To compile this driver as a module, choose M here: the
module will be called pulsedlight-lite-v2
config SX9500
tristate "SX9500 Semtech proximity sensor"
select IIO_BUFFER

1
drivers/iio/proximity/Makefile
View File

@ -4,4 +4,5 @@
# When adding new entries keep the list in alphabetical order
obj-$(CONFIG_AS3935) += as3935.o
obj-$(CONFIG_LIDAR_LITE_V2) += pulsedlight-lidar-lite-v2.o
obj-$(CONFIG_SX9500) += sx9500.o

7
drivers/iio/proximity/as3935.c
View File

@ -434,6 +434,12 @@ static int as3935_remove(struct spi_device *spi)
return 0;
}
static const struct of_device_id as3935_of_match[] = {
{ .compatible = "ams,as3935", },
{ /* sentinel */ },
};
MODULE_DEVICE_TABLE(of, as3935_of_match);
static const struct spi_device_id as3935_id[] = {
{"as3935", 0},
{},
@ -443,6 +449,7 @@ MODULE_DEVICE_TABLE(spi, as3935_id);
static struct spi_driver as3935_driver = {
.driver = {
.name = "as3935",
.of_match_table = of_match_ptr(as3935_of_match),
.owner = THIS_MODULE,
.pm = AS3935_PM_OPS,
},

288
drivers/iio/proximity/pulsedlight-lidar-lite-v2.c Normal file
View File

@ -0,0 +1,288 @@
/*
* pulsedlight-lidar-lite-v2.c - Support for PulsedLight LIDAR sensor
*
* Copyright (C) 2015 Matt Ranostay <mranostay@gmail.com>
*
* 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.
*
* TODO: runtime pm, interrupt mode, and signal strength reporting
*/
#include <linux/err.h>
#include <linux/init.h>
#include <linux/i2c.h>
#include <linux/delay.h>
#include <linux/module.h>
#include <linux/iio/iio.h>
#include <linux/iio/sysfs.h>
#include <linux/iio/buffer.h>
#include <linux/iio/trigger.h>
#include <linux/iio/triggered_buffer.h>
#include <linux/iio/trigger_consumer.h>
#define LIDAR_REG_CONTROL 0x00
#define LIDAR_REG_CONTROL_ACQUIRE BIT(2)
#define LIDAR_REG_STATUS 0x01
#define LIDAR_REG_STATUS_INVALID BIT(3)
#define LIDAR_REG_STATUS_READY BIT(0)
#define LIDAR_REG_DATA_HBYTE 0x0f
#define LIDAR_REG_DATA_LBYTE 0x10
#define LIDAR_DRV_NAME "lidar"
struct lidar_data {
struct iio_dev *indio_dev;
struct i2c_client *client;
u16 buffer[8]; /* 2 byte distance + 8 byte timestamp */
};
static const struct iio_chan_spec lidar_channels[] = {
{
.type = IIO_DISTANCE,
.info_mask_separate =
BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
.scan_index = 0,
.scan_type = {
.sign = 'u',
.realbits = 16,
.storagebits = 16,
},
},
IIO_CHAN_SOFT_TIMESTAMP(1),
};
static int lidar_read_byte(struct lidar_data *data, int reg)
{
struct i2c_client *client = data->client;
int ret;
/*
* Device needs a STOP condition between address write, and data read
* so in turn i2c_smbus_read_byte_data cannot be used
*/
ret = i2c_smbus_write_byte(client, reg);
if (ret < 0) {
dev_err(&client->dev, "cannot write addr value");
return ret;
}
ret = i2c_smbus_read_byte(client);
if (ret < 0)
dev_err(&client->dev, "cannot read data value");
return ret;
}
static inline int lidar_write_control(struct lidar_data *data, int val)
{
return i2c_smbus_write_byte_data(data->client, LIDAR_REG_CONTROL, val);
}
static int lidar_read_measurement(struct lidar_data *data, u16 *reg)
{
int ret;
int val;
ret = lidar_read_byte(data, LIDAR_REG_DATA_HBYTE);
if (ret < 0)
return ret;
val = ret << 8;
ret = lidar_read_byte(data, LIDAR_REG_DATA_LBYTE);
if (ret < 0)
return ret;
val |= ret;
*reg = val;
return 0;
}
static int lidar_get_measurement(struct lidar_data *data, u16 *reg)
{
struct i2c_client *client = data->client;
int tries = 10;
int ret;
/* start sample */
ret = lidar_write_control(data, LIDAR_REG_CONTROL_ACQUIRE);
if (ret < 0) {
dev_err(&client->dev, "cannot send start measurement command");
return ret;
}
while (tries--) {
usleep_range(1000, 2000);
ret = lidar_read_byte(data, LIDAR_REG_STATUS);
if (ret < 0)
break;
/* return 0 since laser is likely pointed out of range */
if (ret & LIDAR_REG_STATUS_INVALID) {
*reg = 0;
ret = 0;
break;
}
/* sample ready to read */
if (!(ret & LIDAR_REG_STATUS_READY)) {
ret = lidar_read_measurement(data, reg);
break;
}
ret = -EIO;
}
return ret;
}
static int lidar_read_raw(struct iio_dev *indio_dev,
struct iio_chan_spec const *chan,
int *val, int *val2, long mask)
{
struct lidar_data *data = iio_priv(indio_dev);
int ret = -EINVAL;
mutex_lock(&indio_dev->mlock);
if (iio_buffer_enabled(indio_dev) && mask == IIO_CHAN_INFO_RAW) {
ret = -EBUSY;
goto error_busy;
}
switch (mask) {
case IIO_CHAN_INFO_RAW: {
u16 reg;
ret = lidar_get_measurement(data, &reg);
if (!ret) {
*val = reg;
ret = IIO_VAL_INT;
}
break;
}
case IIO_CHAN_INFO_SCALE:
*val = 0;
*val2 = 10000;
ret = IIO_VAL_INT_PLUS_MICRO;
break;
}
error_busy:
mutex_unlock(&indio_dev->mlock);
return ret;
}
static irqreturn_t lidar_trigger_handler(int irq, void *private)
{
struct iio_poll_func *pf = private;
struct iio_dev *indio_dev = pf->indio_dev;
struct lidar_data *data = iio_priv(indio_dev);
int ret;
ret = lidar_get_measurement(data, data->buffer);
if (!ret) {
iio_push_to_buffers_with_timestamp(indio_dev, data->buffer,
iio_get_time_ns());
} else {
dev_err(&data->client->dev, "cannot read LIDAR measurement");
}
iio_trigger_notify_done(indio_dev->trig);
return IRQ_HANDLED;
}
static const struct iio_info lidar_info = {
.driver_module = THIS_MODULE,
.read_raw = lidar_read_raw,
};
static int lidar_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct lidar_data *data;
struct iio_dev *indio_dev;
int ret;
indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data));
if (!indio_dev)
return -ENOMEM;
indio_dev->info = &lidar_info;
indio_dev->name = LIDAR_DRV_NAME;
indio_dev->channels = lidar_channels;
indio_dev->num_channels = ARRAY_SIZE(lidar_channels);
indio_dev->modes = INDIO_DIRECT_MODE;
data = iio_priv(indio_dev);
i2c_set_clientdata(client, indio_dev);
data->client = client;
data->indio_dev = indio_dev;
ret = iio_triggered_buffer_setup(indio_dev, NULL,
lidar_trigger_handler, NULL);
if (ret)
return ret;
ret = iio_device_register(indio_dev);
if (ret)
goto error_unreg_buffer;
return 0;
error_unreg_buffer:
iio_triggered_buffer_cleanup(indio_dev);
return ret;
}
static int lidar_remove(struct i2c_client *client)
{
struct iio_dev *indio_dev = i2c_get_clientdata(client);
iio_device_unregister(indio_dev);
iio_triggered_buffer_cleanup(indio_dev);
return 0;
}
static const struct i2c_device_id lidar_id[] = {
{"lidar-lite-v2", 0},
{ },
};
MODULE_DEVICE_TABLE(i2c, lidar_id);
static const struct of_device_id lidar_dt_ids[] = {
{ .compatible = "pulsedlight,lidar-lite-v2" },
{ }
};
static struct i2c_driver lidar_driver = {
.driver = {
.name = LIDAR_DRV_NAME,
.of_match_table = of_match_ptr(lidar_dt_ids),
},
.probe = lidar_probe,
.remove = lidar_remove,
.id_table = lidar_id,
};
module_i2c_driver(lidar_driver);
MODULE_AUTHOR("Matt Ranostay <mranostay@gmail.com>");
MODULE_DESCRIPTION("PulsedLight LIDAR sensor");
MODULE_LICENSE("GPL");

90
drivers/iio/temperature/mlx90614.c
View File

@ -3,6 +3,7 @@
*
* Copyright (c) 2014 Peter Meerwald <pmeerw@pmeerw.net>
* Copyright (c) 2015 Essensium NV
* Copyright (c) 2015 Melexis
*
* This file is subject to the terms and conditions of version 2 of
* the GNU General Public License. See the file COPYING in the main
@ -20,7 +21,6 @@
* always has a pull-up so we do not need an extra GPIO to drive it high. If
* the "wakeup" GPIO is not given, power management will be disabled.
*
* TODO: filter configuration
*/
#include <linux/err.h>
@ -32,6 +32,7 @@
#include <linux/pm_runtime.h>
#include <linux/iio/iio.h>
#include <linux/iio/sysfs.h>
#define MLX90614_OP_RAM 0x00
#define MLX90614_OP_EEPROM 0x20
@ -79,6 +80,20 @@ struct mlx90614_data {
unsigned long ready_timestamp; /* in jiffies */
};
/* Bandwidth values for IIR filtering */
static const int mlx90614_iir_values[] = {77, 31, 20, 15, 723, 153, 110, 86};
static IIO_CONST_ATTR(in_temp_object_filter_low_pass_3db_frequency_available,
"0.15 0.20 0.31 0.77 0.86 1.10 1.53 7.23");
static struct attribute *mlx90614_attributes[] = {
&iio_const_attr_in_temp_object_filter_low_pass_3db_frequency_available.dev_attr.attr,
NULL,
};
static const struct attribute_group mlx90614_attr_group = {
.attrs = mlx90614_attributes,
};
/*
* Erase an address and write word.
* The mutex must be locked before calling.
@ -117,6 +132,42 @@ static s32 mlx90614_write_word(const struct i2c_client *client, u8 command,
return ret;
}
/*
* Find the IIR value inside mlx90614_iir_values array and return its position
* which is equivalent to the bit value in sensor register
*/
static inline s32 mlx90614_iir_search(const struct i2c_client *client,
int value)
{
int i;
s32 ret;
for (i = 0; i < ARRAY_SIZE(mlx90614_iir_values); ++i) {
if (value == mlx90614_iir_values[i])
break;
}
if (i == ARRAY_SIZE(mlx90614_iir_values))
return -EINVAL;
/*
* CONFIG register values must not be changed so
* we must read them before we actually write
* changes
*/
ret = i2c_smbus_read_word_data(client, MLX90614_CONFIG);
if (ret > 0)
return ret;
/* Write changed values */
ret = mlx90614_write_word(client, MLX90614_CONFIG,
(i << MLX90614_CONFIG_IIR_SHIFT) |
(((u16) ((0x7 << MLX90614_CONFIG_FIR_SHIFT) |
((u16) ret & (~((u16) MLX90614_CONFIG_FIR_MASK))))) &
(~(u16) MLX90614_CONFIG_IIR_MASK)));
return ret;
}
#ifdef CONFIG_PM
/*
* If @startup is true, make sure MLX90614_TIMING_STARTUP ms have elapsed since
@ -236,6 +287,21 @@ static int mlx90614_read_raw(struct iio_dev *indio_dev,
*val2 = ret * MLX90614_CONST_EMISSIVITY_RESOLUTION;
}
return IIO_VAL_INT_PLUS_NANO;
case IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY: /* IIR setting with
FIR = 1024 */
mlx90614_power_get(data, false);
mutex_lock(&data->lock);
ret = i2c_smbus_read_word_data(data->client, MLX90614_CONFIG);
mutex_unlock(&data->lock);
mlx90614_power_put(data);
if (ret < 0)
return ret;
*val = mlx90614_iir_values[ret & MLX90614_CONFIG_IIR_MASK] / 100;
*val2 = (mlx90614_iir_values[ret & MLX90614_CONFIG_IIR_MASK] % 100) *
10000;
return IIO_VAL_INT_PLUS_MICRO;
default:
return -EINVAL;
}
@ -262,6 +328,18 @@ static int mlx90614_write_raw(struct iio_dev *indio_dev,
mutex_unlock(&data->lock);
mlx90614_power_put(data);
return ret;
case IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY: /* IIR Filter setting */
if (val < 0 || val2 < 0)
return -EINVAL;
mlx90614_power_get(data, false);
mutex_lock(&data->lock);
ret = mlx90614_iir_search(data->client,
val * 100 + val2 / 10000);
mutex_unlock(&data->lock);
mlx90614_power_put(data);
return ret;
default:
return -EINVAL;
@ -275,6 +353,8 @@ static int mlx90614_write_raw_get_fmt(struct iio_dev *indio_dev,
switch (mask) {
case IIO_CHAN_INFO_CALIBEMISSIVITY:
return IIO_VAL_INT_PLUS_NANO;
case IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY:
return IIO_VAL_INT_PLUS_MICRO;
default:
return -EINVAL;
}
@ -294,7 +374,8 @@ static const struct iio_chan_spec mlx90614_channels[] = {
.modified = 1,
.channel2 = IIO_MOD_TEMP_OBJECT,
.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
BIT(IIO_CHAN_INFO_CALIBEMISSIVITY),
BIT(IIO_CHAN_INFO_CALIBEMISSIVITY) |
BIT(IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY),
.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_OFFSET) |
BIT(IIO_CHAN_INFO_SCALE),
},
@ -305,7 +386,8 @@ static const struct iio_chan_spec mlx90614_channels[] = {
.channel = 1,
.channel2 = IIO_MOD_TEMP_OBJECT,
.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
BIT(IIO_CHAN_INFO_CALIBEMISSIVITY),
BIT(IIO_CHAN_INFO_CALIBEMISSIVITY) |
BIT(IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY),
.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_OFFSET) |
BIT(IIO_CHAN_INFO_SCALE),
},
@ -315,6 +397,7 @@ static const struct iio_info mlx90614_info = {
.read_raw = mlx90614_read_raw,
.write_raw = mlx90614_write_raw,
.write_raw_get_fmt = mlx90614_write_raw_get_fmt,
.attrs = &mlx90614_attr_group,
.driver_module = THIS_MODULE,
};
@ -569,5 +652,6 @@ module_i2c_driver(mlx90614_driver);
MODULE_AUTHOR("Peter Meerwald <pmeerw@pmeerw.net>");
MODULE_AUTHOR("Vianney le Clément de Saint-Marcq <vianney.leclement@essensium.com>");
MODULE_AUTHOR("Crt Mori <cmo@melexis.com>");
MODULE_DESCRIPTION("Melexis MLX90614 contactless IR temperature sensor driver");
MODULE_LICENSE("GPL");

4
drivers/staging/iio/adc/lpc32xx_adc.c
View File

@ -137,7 +137,7 @@ static int lpc32xx_adc_probe(struct platform_device *pdev)
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res) {
dev_err(&pdev->dev, "failed to get platform I/O memory\n");
return -EBUSY;
return -ENXIO;
}
iodev = devm_iio_device_alloc(&pdev->dev, sizeof(*info));
@ -162,7 +162,7 @@ static int lpc32xx_adc_probe(struct platform_device *pdev)
irq = platform_get_irq(pdev, 0);
if (irq <= 0) {
dev_err(&pdev->dev, "failed getting interrupt resource\n");
return -EINVAL;
return -ENXIO;
}
retval = devm_request_irq(&pdev->dev, irq, lpc32xx_adc_isr, 0,

26
drivers/staging/iio/iio_dummy_evgen.c
View File

@ -24,9 +24,21 @@
#include "iio_dummy_evgen.h"
#include <linux/iio/iio.h>
#include <linux/iio/sysfs.h>
#include <linux/irq_work.h>
/* Fiddly bit of faking and irq without hardware */
#define IIO_EVENTGEN_NO 10
/**
* struct iio_dummy_handle_irq - helper struct to simulate interrupt generation
* @work: irq_work used to run handlers from hardirq context
* @irq: fake irq line number to trigger an interrupt
*/
struct iio_dummy_handle_irq {
struct irq_work work;
int irq;
};
/**
* struct iio_dummy_evgen - evgen state
* @chip: irq chip we are faking
@ -35,6 +47,7 @@
* @inuse: mask of which irqs are connected
* @regs: irq regs we are faking
* @lock: protect the evgen state
* @handler: helper for a 'hardware-like' interrupt simulation
*/
struct iio_dummy_eventgen {
struct irq_chip chip;
@ -43,6 +56,7 @@ struct iio_dummy_eventgen {
bool inuse[IIO_EVENTGEN_NO];
struct iio_dummy_regs regs[IIO_EVENTGEN_NO];
struct mutex lock;
struct iio_dummy_handle_irq handler;
};
/* We can only ever have one instance of this 'device' */
@ -67,6 +81,14 @@ static void iio_dummy_event_irqunmask(struct irq_data *d)
evgen->enabled[d->irq - evgen->base] = true;
}
static void iio_dummy_work_handler(struct irq_work *work)
{
struct iio_dummy_handle_irq *irq_handler;
irq_handler = container_of(work, struct iio_dummy_handle_irq, work);
handle_simple_irq(irq_handler->irq, irq_to_desc(irq_handler->irq));
}
static int iio_dummy_evgen_create(void)
{
int ret, i;
@ -91,6 +113,7 @@ static int iio_dummy_evgen_create(void)
IRQ_NOREQUEST | IRQ_NOAUTOEN,
IRQ_NOPROBE);
}
init_irq_work(&iio_evgen->handler.work, iio_dummy_work_handler);
mutex_init(&iio_evgen->lock);
return 0;
}
@ -169,8 +192,9 @@ static ssize_t iio_evgen_poke(struct device *dev,
iio_evgen->regs[this_attr->address].reg_id = this_attr->address;
iio_evgen->regs[this_attr->address].reg_data = event;
iio_evgen->handler.irq = iio_evgen->base + this_attr->address;
if (iio_evgen->enabled[this_attr->address])
handle_nested_irq(iio_evgen->base + this_attr->address);
irq_work_queue(&iio_evgen->handler.work);
return len;
}

1
drivers/staging/iio/iio_simple_dummy.h
View File

@ -46,6 +46,7 @@ struct iio_dummy_state {
int event_irq;
int event_val;
bool event_en;
s64 event_timestamp;
#endif /* CONFIG_IIO_SIMPLE_DUMMY_EVENTS */
};

19
drivers/staging/iio/iio_simple_dummy_events.c
View File

@ -153,6 +153,15 @@ int iio_simple_dummy_write_event_value(struct iio_dev *indio_dev,
return 0;
}
static irqreturn_t iio_simple_dummy_get_timestamp(int irq, void *private)
{
struct iio_dev *indio_dev = private;
struct iio_dummy_state *st = iio_priv(indio_dev);
st->event_timestamp = iio_get_time_ns();
return IRQ_HANDLED;
}
/**
* iio_simple_dummy_event_handler() - identify and pass on event
* @irq: irq of event line
@ -177,7 +186,7 @@ static irqreturn_t iio_simple_dummy_event_handler(int irq, void *private)
IIO_EVENT_CODE(IIO_VOLTAGE, 0, 0,
IIO_EV_DIR_RISING,
IIO_EV_TYPE_THRESH, 0, 0, 0),
iio_get_time_ns());
st->event_timestamp);
break;
case 1:
if (st->activity_running > st->event_val)
@ -187,7 +196,7 @@ static irqreturn_t iio_simple_dummy_event_handler(int irq, void *private)
IIO_EV_DIR_RISING,
IIO_EV_TYPE_THRESH,
0, 0, 0),
iio_get_time_ns());
st->event_timestamp);
break;
case 2:
if (st->activity_walking < st->event_val)
@ -197,14 +206,14 @@ static irqreturn_t iio_simple_dummy_event_handler(int irq, void *private)
IIO_EV_DIR_FALLING,
IIO_EV_TYPE_THRESH,
0, 0, 0),
iio_get_time_ns());
st->event_timestamp);
break;
case 3:
iio_push_event(indio_dev,
IIO_EVENT_CODE(IIO_STEPS, 0, IIO_NO_MOD,
IIO_EV_DIR_NONE,
IIO_EV_TYPE_CHANGE, 0, 0, 0),
iio_get_time_ns());
st->event_timestamp);
break;
default:
break;
@ -238,7 +247,7 @@ int iio_simple_dummy_events_register(struct iio_dev *indio_dev)
st->regs = iio_dummy_evgen_get_regs(st->event_irq);
ret = request_threaded_irq(st->event_irq,
NULL,
&iio_simple_dummy_get_timestamp,
&iio_simple_dummy_event_handler,
IRQF_ONESHOT,
"iio_simple_event",

2
drivers/staging/iio/magnetometer/hmc5843.h
View File

@ -48,7 +48,7 @@ struct hmc5843_data {
};
int hmc5843_common_probe(struct device *dev, struct regmap *regmap,
enum hmc5843_ids id);
enum hmc5843_ids id, const char *name);
int hmc5843_common_remove(struct device *dev);
int hmc5843_common_suspend(struct device *dev);

4
drivers/staging/iio/magnetometer/hmc5843_core.c
View File

@ -577,7 +577,7 @@ int hmc5843_common_resume(struct device *dev)
EXPORT_SYMBOL(hmc5843_common_resume);
int hmc5843_common_probe(struct device *dev, struct regmap *regmap,
enum hmc5843_ids id)
enum hmc5843_ids id, const char *name)
{
struct hmc5843_data *data;
struct iio_dev *indio_dev;
@ -597,7 +597,7 @@ int hmc5843_common_probe(struct device *dev, struct regmap *regmap,
mutex_init(&data->lock);
indio_dev->dev.parent = dev;
indio_dev->name = dev->driver->name;
indio_dev->name = name;
indio_dev->info = &hmc5843_info;
indio_dev->modes = INDIO_DIRECT_MODE;
indio_dev->channels = data->variant->channels;

2
drivers/staging/iio/magnetometer/hmc5843_i2c.c
View File

@ -61,7 +61,7 @@ static int hmc5843_i2c_probe(struct i2c_client *cli,
{
return hmc5843_common_probe(&cli->dev,
devm_regmap_init_i2c(cli, &hmc5843_i2c_regmap_config),
id->driver_data);
id->driver_data, id->name);
}
static int hmc5843_i2c_remove(struct i2c_client *client)

4
drivers/staging/iio/magnetometer/hmc5843_spi.c
View File

@ -59,6 +59,7 @@ static const struct regmap_config hmc5843_spi_regmap_config = {
static int hmc5843_spi_probe(struct spi_device *spi)
{
int ret;
const struct spi_device_id *id = spi_get_device_id(spi);
spi->mode = SPI_MODE_3;
spi->max_speed_hz = 8000000;
@ -69,7 +70,7 @@ static int hmc5843_spi_probe(struct spi_device *spi)
return hmc5843_common_probe(&spi->dev,
devm_regmap_init_spi(spi, &hmc5843_spi_regmap_config),
HMC5983_ID);
id->driver_data, id->name);
}
static int hmc5843_spi_remove(struct spi_device *spi)
@ -81,6 +82,7 @@ static const struct spi_device_id hmc5843_id[] = {
{ "hmc5983", HMC5983_ID },
{ }
};
MODULE_DEVICE_TABLE(spi, hmc5843_id);
static struct spi_driver hmc5843_driver = {
.driver = {

4
include/linux/iio/common/st_sensors.h
View File

@ -271,6 +271,10 @@ void st_sensors_power_enable(struct iio_dev *indio_dev);
void st_sensors_power_disable(struct iio_dev *indio_dev);
int st_sensors_debugfs_reg_access(struct iio_dev *indio_dev,
unsigned reg, unsigned writeval,
unsigned *readval);
int st_sensors_set_odr(struct iio_dev *indio_dev, unsigned int odr);
int st_sensors_set_dataready_irq(struct iio_dev *indio_dev, bool enable);

3
include/linux/iio/iio.h
View File

@ -294,6 +294,7 @@ static inline s64 iio_get_time_ns(void)
#define INDIO_BUFFER_TRIGGERED 0x02
#define INDIO_BUFFER_SOFTWARE 0x04
#define INDIO_BUFFER_HARDWARE 0x08
#define INDIO_EVENT_TRIGGERED 0x10
#define INDIO_ALL_BUFFER_MODES \
(INDIO_BUFFER_TRIGGERED | INDIO_BUFFER_HARDWARE | INDIO_BUFFER_SOFTWARE)
@ -457,6 +458,7 @@ struct iio_buffer_setup_ops {
* @scan_index_timestamp:[INTERN] cache of the index to the timestamp
* @trig: [INTERN] current device trigger (buffer modes)
* @pollfunc: [DRIVER] function run on trigger being received
* @pollfunc_event: [DRIVER] function run on events trigger being received
* @channels: [DRIVER] channel specification structure table
* @num_channels: [DRIVER] number of channels specified in @channels.
* @channel_attr_list: [INTERN] keep track of automatically created channel
@ -495,6 +497,7 @@ struct iio_dev {
unsigned scan_index_timestamp;
struct iio_trigger *trig;
struct iio_poll_func *pollfunc;
struct iio_poll_func *pollfunc_event;
struct iio_chan_spec const *channels;
int num_channels;

11
include/linux/iio/triggered_event.h Normal file
View File

@ -0,0 +1,11 @@
#ifndef _LINUX_IIO_TRIGGERED_EVENT_H_
#define _LINUX_IIO_TRIGGERED_EVENT_H_
#include <linux/interrupt.h>
int iio_triggered_event_setup(struct iio_dev *indio_dev,
irqreturn_t (*h)(int irq, void *p),
irqreturn_t (*thread)(int irq, void *p));
void iio_triggered_event_cleanup(struct iio_dev *indio_dev);
#endif

4
include/uapi/linux/iio/types.h
View File

@ -35,6 +35,8 @@ enum iio_chan_type {
IIO_ENERGY,
IIO_DISTANCE,
IIO_VELOCITY,
IIO_CONCENTRATION,
IIO_RESISTANCE,
};
enum iio_modifier {
@ -72,6 +74,8 @@ enum iio_modifier {
IIO_MOD_ROOT_SUM_SQUARED_X_Y_Z,
IIO_MOD_I,
IIO_MOD_Q,
IIO_MOD_CO2,
IIO_MOD_VOC,
};
enum iio_event_type {

9
tools/iio/generic_buffer.c
View File

@ -328,6 +328,15 @@ int main(int argc, char **argv)
"diag %s\n", dev_dir_name);
goto error_free_triggername;
}
if (!num_channels) {
fprintf(stderr,
"No channels are enabled, we have nothing to scan.\n");
fprintf(stderr, "Enable channels manually in "
FORMAT_SCAN_ELEMENTS_DIR
"/*_en and try again.\n", dev_dir_name);
ret = -ENOENT;
goto error_free_triggername;
}
/*
* Construct the directory name for the associated buffer.

6
tools/iio/iio_event_monitor.c
View File

@ -284,7 +284,11 @@ int main(int argc, char **argv)
ret = ioctl(fd, IIO_GET_EVENT_FD_IOCTL, &event_fd);
if (ret == -1 || event_fd == -1) {
ret = -errno;
fprintf(stderr, "Failed to retrieve event fd\n");
if (ret == -ENODEV)
fprintf(stderr,
"This device does not support events\n");
else
fprintf(stderr, "Failed to retrieve event fd\n");
if (close(fd) == -1)
perror("Failed to close character device file");