linux-toradex.git/drivers/iio/temperature, branch v6.7

iio: temperature: hid-sensor: Convert to platform remove callback returning void

2023-09-23T14:06:56+00:00

The .remove() callback for a platform driver returns an int which makes
many driver authors wrongly assume it's possible to do error handling by
returning an error code. However the value returned is ignored (apart
from emitting a warning) and this typically results in resource leaks.
To improve here there is a quest to make the remove callback return
void. In the first step of this quest all drivers are converted to
.remove_new() which already returns void. Eventually after all drivers
are converted, .remove_new() will be renamed to .remove().

Trivially convert this driver from always returning zero in the remove
callback to the void returning variant.

Signed-off-by: Uwe Kleine-König 
Link: https://lore.kernel.org/r/20230919174931.1417681-48-u.kleine-koenig@pengutronix.de
Signed-off-by: Jonathan Cameron

iio: temperature: tmp117: Convert enum->pointer for data in the match tables

2023-09-12T09:42:03+00:00

Convert enum->pointer for data in the match tables, so that
device_get_match_data() can do match against OF/ACPI/I2C tables, once i2c
bus type match support added to it.

Add struct tmp11x_info and replace enum->struct *tmp11x_info for data in
the match table. Drop tmp117_identify() and simplify tmp117_probe() by
replacing device_get_match_data() and id lookup for retrieving data by
i2c_get_match_data().

Signed-off-by: Biju Das 
Reviewed-by: Marco Felsch 
Link: https://lore.kernel.org/r/20230812161154.196555-1-biju.das.jz@bp.renesas.com
Signed-off-by: Jonathan Cameron

iio: mlx90614: Use i2c_get_match_data()

2023-09-11T19:12:42+00:00

Replace device_get_match_data()->i2c_get_match_data() to extend matching
support for ID table.

Signed-off-by: Biju Das 
Acked-by: "Crt Mori "
Link: https://lore.kernel.org/r/20230812162222.200004-1-biju.das.jz@bp.renesas.com
Signed-off-by: Jonathan Cameron

iio: adc: Explicitly include correct DT includes

2023-07-23T12:38:13+00:00

The DT of_device.h and of_platform.h date back to the separate
of_platform_bus_type before it as merged into the regular platform bus.
As part of that merge prepping Arm DT support 13 years ago, they
"temporarily" include each other. They also include platform_device.h
and of.h. As a result, there's a pretty much random mix of those include
files used throughout the tree. In order to detangle these headers and
replace the implicit includes with struct declarations, users need to
explicitly include the correct includes.

Signed-off-by: Rob Herring 
Acked-by: Heiko Stuebner 
Link: https://lore.kernel.org/r/20230714174628.4057920-1-robh@kernel.org
Signed-off-by: Jonathan Cameron

iio: temperature: tmp006: Add OF device matching support

2023-05-28T19:22:03+00:00

Adds an of_device_id table entry to the driver, enabling
device matching through device tree. With this update, the driver
can now match devices using both the i2c_device_id entry and the
newly added of_device_id table.

Signed-off-by: Anup Sharma 
Reviewed-by: Conor Dooley 
Link: https://lore.kernel.org/r/72746bdfd8f74171943e41759b891c7af40627ec.1684579603.git.anupnewsmail@gmail.com
Signed-off-by: Jonathan Cameron

iio: mlx90614: Add MLX90615 support

2023-05-23T20:20:17+00:00

Add support for MLX90615 Infra Red Thermometer, which seems to be
the predecesor of MLX90614 . There are significant differences in
the register layout compared to MLX90614, but the functionality
of the device is virtually identical.

The following differences have been identified:
- RAM/EEPROM/SLEEP access opcodes are different
- RAM/EEPROM registers are at different offsets
- EEPROM emissivity and configuration registers are at different offsets
- EEPROM configuration register bits are shuffled around
- EEPROM emissivity settings are 14 bit on MLX90615 , 16 bit on MLX90614
- MLX90615 can only ever support one sensor, MLX90614 could support two
- FIR filter is set to fixed settings on MLX90615
- IIR filter coefficients are different

This patch fills in the MLX90615 specific description and quirk handling.

The IIR filter coefficients were provided by Melexis as follows:
0b0000 - Forbidden value
0b0001 - 100% - settling time = refresh rate = 205ms (around 5Hz)
0b0010 - 50% - settling time = 2050ms (around 0.5Hz)
0b0011 - 33% - settling time = 36900ms (around 0.3Hz)
0b0100 - 25% - settling time = 5125ms (around 0.2Hz)
0b0101 - 20% - settling time = 6355ms (around 0.15Hz)
0b0110 - 17% - settling time = 7790ms (around 0.13Hz)
0b0111 - 14% - settling time = 9225ms (around 0.1Hz)

Signed-off-by: Marek Vasut 
Acked-by: Crt Mori 
Link: https://lore.kernel.org/r/20230510102251.10118-6-marex@denx.de
Signed-off-by: Jonathan Cameron

iio: mlx90614: Factor our register IO and constants into model specific descriptor

2023-05-23T20:20:17+00:00

Factor out all the differences between MLX90614 and other similar chips
into a structure which describes the chip and allows abstracting out the
differences from the driver code. No functional change.

This patch moves all the RAM and EEPROM IO opcodes into the descriptor
structure and combines them, instead of combining the opcode and offset
in macros.

Acked-by: Crt Mori 
Tested-by: Crt Mori 
Signed-off-by: Marek Vasut 
Link: https://lore.kernel.org/r/20230510102251.10118-5-marex@denx.de
Signed-off-by: Jonathan Cameron

iio: mlx90614: Drop MLX90614_CONST_EMISSIVITY_RESOLUTION

2023-05-23T20:20:16+00:00

The MLX90614_CONST_EMISSIVITY_RESOLUTION can be calculated from
MLX90614_CONST_RAW_EMISSIVITY_MAX, perform the calculation inline
and drio the MLX90614_CONST_EMISSIVITY_RESOLUTION.

Signed-off-by: Marek Vasut 
Acked-by: Crt Mori 
Link: https://lore.kernel.org/r/20230510102251.10118-4-marex@denx.de
Signed-off-by: Jonathan Cameron

iio: mlx90614: Drop unused register macros

2023-05-23T20:20:16+00:00

To simplify addition of support for new parts, drop unused register macros.
No functional change.

Acked-by: Crt Mori 
Signed-off-by: Marek Vasut 
Link: https://lore.kernel.org/r/20230510102251.10118-3-marex@denx.de
Signed-off-by: Jonathan Cameron

iio: mlx90614: Sort headers

2023-05-23T20:20:16+00:00

Sort the headers alphabetically. No functional change.

Acked-by: Crt Mori 
Signed-off-by: Marek Vasut 
Link: https://lore.kernel.org/r/20230510102251.10118-2-marex@denx.de
Signed-off-by: Jonathan Cameron