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Added custom channel-specific (temp1) attribute for resolution. The wait
time for a conversion in one-shot mode (enable = 0) depends on the
resolution.
When resolution is 12-bit, the conversion time is 140ms, but the minimum
update_interval is 125ms. Handled this problem by waiting an additional
15ms (125ms + 15ms = 140ms).
Added 'mask' parameter to the shutdown_write() function. Now it can
either write or update bits, depending on the value of mask. This is
needed, because for alarms a write is necessary, but for resolution only
the resolution bits should be updated.
Signed-off-by: Daniel Matyas <daniel.matyas@analog.com>
Link: https://lore.kernel.org/r/20231031182158.124608-5-daniel.matyas@analog.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
When user writes a value to update_interval which does not match the
possible values, instead of returning invalid error, return the closest
value.
Signed-off-by: Daniel Matyas <daniel.matyas@analog.com>
Link: https://lore.kernel.org/r/20231031182158.124608-4-daniel.matyas@analog.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Added 'mask' parameter to the shutdown_write() function. Now it can
either write or update bits, depending on the value of mask. This is
needed, because for alarms a write is necessary, but for resolution only
the resolution bits should be updated.
Signed-off-by: Daniel Matyas <daniel.matyas@analog.com>
Link: https://lore.kernel.org/r/20231031182158.124608-3-daniel.matyas@analog.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Created of_match_table and id_table entries for max31828 and max31829.
When adi,flt-q and/or adi,alrm-pol are not mentioned,
the default configuration is loaded based on the type of the chip.
Signed-off-by: Daniel Matyas <daniel.matyas@analog.com>
Link: https://lore.kernel.org/r/20231031182158.124608-2-daniel.matyas@analog.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Used fwnode to retrieve data from the devicetree in the init_client
function.
If the uint32 properties are not present, the default values are used
for max31827 chip.
Signed-off-by: Daniel Matyas <daniel.matyas@analog.com>
Link: https://lore.kernel.org/r/20231031182158.124608-1-daniel.matyas@analog.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Add missing implementation for the max31827 supply regulator.
This is a hardware required property that is not handled.
Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com>
Link: https://lore.kernel.org/r/20230925122929.10610-1-antoniu.miclaus@analog.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
There is nothing in the datasheet indicating that the 1ms error is
needed and I didn't encounter any error during testing with 140ms wait
time.
Signed-off-by: Daniel Matyas <daniel.matyas@analog.com>
Link: https://lore.kernel.org/r/20230919093456.10592-2-daniel.matyas@analog.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Used enums and while loops to replace switch for selecting and getting
update interval from conversion rate bits.
Divided the write_alarm_val function into 2 functions. The new function
is more generic: it can be used not only for alarm writes, but for any
kind of writes which require the device to be in shutdown mode.
Signed-off-by: Daniel Matyas <daniel.matyas@analog.com>
Link: https://lore.kernel.org/r/20230919093456.10592-1-daniel.matyas@analog.com
[groeck: Reverted error return value change (EOPNOTSUPP -> EINVAL)]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
struct i2c_driver::probe_new is about to go away. Switch the driver to
use the probe callback with the same prototype.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Link: https://lore.kernel.org/r/20230626085145.554616-1-u.kleine-koenig@pengutronix.de
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
MAX31827 is a low-power temperature switch with I2C interface.
The device is a ±1°C accuracy from -40°C to +125°C
(12 bits) local temperature switch and sensor with I2C/SM-
Bus interface. The combination of small 6-bump wafer-lev-
el package (WLP) and high accuracy makes this temper-
ature sensor/switch ideal for a wide range of applications.
Signed-off-by: Daniel Matyas <daniel.matyas@analog.com>
Link: https://lore.kernel.org/r/20230524160131.14081-2-daniel.matyas@analog.com
[groeck: Improved define alignment, return -EINVAL after bad user input,
fixed up compatible statement]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
