kernel/drivers/iio/temperature, branch linux-6.9.y

iio: temperature: mcp9600: Fix temperature reading for negative values

2024-06-21T12:40:35Z

commit 827dca3129708a8465bde90c86c2e3c38e62dd4f upstream. Temperature is stored as 16bit value in two's complement format. Current implementation ignores the sign bit. Make it aware of the sign bit by using sign_extend32. Fixes: 3f6b9598b6df ("iio: temperature: Add MCP9600 thermocouple EMF converter") Signed-off-by: Dimitri Fedrau Reviewed-by: Marcelo Schmitt Tested-by: Andrew Hepp Link: https://lore.kernel.org/r/20240424185913.1177127-1-dima.fedrau@gmail.com Cc: Signed-off-by: Jonathan Cameron Signed-off-by: Greg Kroah-Hartman

iio: temperature: mlx90635: Fix ERR_PTR dereference in mlx90635_probe()

2024-06-21T12:40:28Z

commit a23c14b062d8800a2192077d83273bbfe6c7552d upstream. When devm_regmap_init_i2c() fails, regmap_ee could be error pointer, instead of checking for IS_ERR(regmap_ee), regmap is checked which looks like a copy paste error. Fixes: a1d1ba5e1c28 ("iio: temperature: mlx90635 MLX90635 IR Temperature sensor") Reviewed-by: Crt Mori Signed-off-by: Harshit Mogalapalli Link: https://lore.kernel.org/r/20240513203427.3208696-1-harshit.m.mogalapalli@oracle.com Cc: Signed-off-by: Jonathan Cameron Signed-off-by: Greg Kroah-Hartman

iio: temperature: ltc2983: explicitly set the name in chip_info

2024-02-28T19:26:36Z

Getting the part name with 'spi_get_device_id(spi)->name' is not a very good pattern. Hence, explicitly add the name in the struct chip_info and use that instead. Signed-off-by: Nuno Sa Link: https://lore.kernel.org/r/20240222-ltc2983-misc-improv-v1-4-cf7d4457e98c@analog.com Signed-off-by: Jonathan Cameron

iio: temperature: ltc2983: rename ltc2983_parse_dt()

2024-02-28T19:26:36Z

Rename ltc2983_parse_dt() to ltc2983_parse_fw() as there's no explicit dependency on devicetree. No functional change intended... Signed-off-by: Nuno Sa Link: https://lore.kernel.org/r/20240222-ltc2983-misc-improv-v1-2-cf7d4457e98c@analog.com Signed-off-by: Jonathan Cameron

iio: temperature: ltc2983: make use of spi_get_device_match_data()

2024-02-28T19:26:36Z

Use spi_get_device_match_data() as it simplifies the code. No functional change intended... Signed-off-by: Nuno Sa Link: https://lore.kernel.org/r/20240222-ltc2983-misc-improv-v1-1-cf7d4457e98c@analog.com Signed-off-by: Jonathan Cameron

iio: temperature: tmp117: add support for vcc-supply

2024-02-28T19:26:35Z

Add support to specify the VCC supply which is required to power the device. According the datasheet 7.3.1 Power Up, the device needs 1.5ms after the supply voltage reaches the operating range before the communcation can begin. Signed-off-by: Thomas Haemmerle Signed-off-by: Marco Felsch Link: https://lore.kernel.org/r/20240219131114.134607-2-m.felsch@pengutronix.de Signed-off-by: Jonathan Cameron

iio: temperature: mlx90635 MLX90635 IR Temperature sensor

2023-12-11T19:16:34Z

MLX90635 is an Infra Red contactless temperature sensor most suitable for consumer applications where measured object temperature is in range between -20 to 100 degrees Celsius. It has improved accuracy for measurements within temperature range of human body and can operate in ambient temperature range between -20 to 85 degrees Celsius. Driver provides simple power management possibility as it returns to lowest possible power mode (Step sleep mode) in which temperature measurements can still be performed, yet for continuous measuring it switches to Continuous power mode where measurements constantly change without triggering. Signed-off-by: Crt Mori Link: https://lore.kernel.org/r/c6590e4fb8d993a5317b486a3e45e1bb6e9e3318.1701872051.git.cmo@melexis.com Signed-off-by: Jonathan Cameron

iio: temperature: Add MCP9600 thermocouple EMF converter

2023-11-16T19:10:28Z

Add support for the MCP9600 thermocouple electromotive force converter. The sensor has integrated cold junction compensation and a typical accuracy of 0.5 degrees Celsius. The driver supports a resolution of 0.0625 degrees Celsius. Datasheet: https://ww1.microchip.com/downloads/en/DeviceDoc/MCP960X-Data-Sheet-20005426.pdf Signed-off-by: Andrew Hepp Link: https://lore.kernel.org/r/20231025233153.5454-2-andrew.hepp@ahepp.dev Signed-off-by: Jonathan Cameron

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

2023-09-23T14:06:56Z

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

2023-09-12T09:42:03Z

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