kernel/linux.git/drivers/iio/potentiometer, branch linux-6.12.y

iio: potentiometer: mcp4131: fix double application of wiper shift

2026-03-25T10:08:39+00:00

commit 85e4614524dca6c0a43874f475a17de2b9725648 upstream. The MCP4131 wiper address is shifted twice when preparing the SPI command in mcp4131_write_raw(). The address is already shifted when assigned to the local variable "address", but is then shifted again when written to data->buf[0]. This results in an incorrect command being sent to the device and breaks wiper writes to the second channel. Remove the second shift and use the pre-shifted address directly when composing the SPI transfer. Fixes: 22d199a53910 ("iio: potentiometer: add driver for Microchip MCP413X/414X/415X/416X/423X/424X/425X/426X") Signed-off-by: Lukas Schmid # Cc: Signed-off-by: Jonathan Cameron Signed-off-by: Greg Kroah-Hartman

iio: potentiometer: max5487: Drop ACPI_PTR() usage

2024-01-23T22:06:55+00:00

Avoiding unused variable warnings when using this macro adds complexity that in simple cases like this one is not justified for the small saving in data. Switch include from acpi.h to mod_devicetable.h which includes the definition of struct acpi_device_id. Reported-by: kernel test robot Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/20231231183514.566609-21-jic23@kernel.org Signed-off-by: Jonathan Cameron

iio: potentiometer: ad5110: Use i2c_get_match_data()

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

Replace device_get_match_data()->i2c_get_match_data by making similar I2C and DT-based matching table to extend matching support for ID table. Signed-off-by: Biju Das Link: https://lore.kernel.org/r/20230812150838.185055-1-biju.das.jz@bp.renesas.com Signed-off-by: Jonathan Cameron

iio: potentiometer: ds1803: Convert enum->pointer for data in the ID table

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

Convert enum->pointer for data in the ID table, so that device_get_match_data() can do match against OF/ACPI/I2C tables, once i2c bus type match support added to it. Replace enum->struct *ds1803_cfg for data in the ID table and simplify ds1803_probe() by replacing device_get_match_data() with i2c_get_match_data(). Signed-off-by: Biju Das Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/20230812144106.163355-1-biju.das.jz@bp.renesas.com Signed-off-by: Jonathan Cameron

iio: potentiometer: mcp4531: Use i2c_get_match_data()

2023-07-29T14:55:48+00:00

Replace device_get_match_data() and i2c_match_id() by i2c_get_match _data() by making similar I2C and DT-based matching table. Signed-off-by: Biju Das Link: https://lore.kernel.org/r/20230723102743.102284-1-biju.das.jz@bp.renesas.com Signed-off-by: Jonathan Cameron

iio: potentiometer: mcp4018: Use i2c_get_match_data()

2023-07-29T14:53:59+00:00

Replace of_device_get_match_data() and i2c_match_id() by i2c_get_match _data() by making similar I2C and DT-based matching table. Signed-off-by: Biju Das Link: https://lore.kernel.org/r/20230723105209.175545-1-biju.das.jz@bp.renesas.com Signed-off-by: Jonathan Cameron

iio: Switch i2c drivers back to use .probe()

2023-05-21T17:54:53+00:00

After commit b8a1a4cd5a98 ("i2c: Provide a temporary .probe_new() call-back type"), all drivers being converted to .probe_new() and then 03c835f498b5 ("i2c: Switch .probe() to not take an id parameter") convert back to (the new) .probe() to be able to eventually drop .probe_new() from struct i2c_driver. Signed-off-by: Uwe Kleine-König Link: https://lore.kernel.org/r/20230515205048.19561-1-u.kleine-koenig@pengutronix.de Signed-off-by: Jonathan Cameron

iio: potentiometer: Add support for the Renesas X9250 potentiometers

2023-05-20T16:30:33+00:00

The Renesas X9250 integrates four digitally controlled potentiometers. On each potentiometer, the X9250T has a 100 kOhms total resistance and the X9250U has a 50 kOhms total resistance. Signed-off-by: Herve Codina Link: https://lore.kernel.org/r/20230509160852.158101-3-herve.codina@bootlin.com Signed-off-by: Jonathan Cameron

iio: potentiometer: tpl0102: Convert to i2c's .probe_new()

2022-11-23T20:20:30+00:00

.probe_new() doesn't get the i2c_device_id * parameter, so determine that explicitly in the probe function. Signed-off-by: Uwe Kleine-König Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/20221118224540.619276-164-uwe@kleine-koenig.org Signed-off-by: Jonathan Cameron

iio: potentiometer: max5432: Convert to i2c's .probe_new()

2022-11-23T20:20:30+00:00

The probe function doesn't make use of the i2c_device_id * parameter so it can be trivially converted. Signed-off-by: Uwe Kleine-König Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/20221118224540.619276-163-uwe@kleine-koenig.org Signed-off-by: Jonathan Cameron