kernel/linux.git/drivers/iio/light/Kconfig, branch v6.7

iio: light: ROHM BU27008 color sensor

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

The ROHM BU27008 is a sensor with 5 photodiodes (red, green, blue, clear and IR) with four configurable channels. Red and green being always available and two out of the rest three (blue, clear, IR) can be selected to be simultaneously measured. Typical application is adjusting LCD backlight of TVs, mobile phones and tablet PCs. Add initial support for the ROHM BU27008 color sensor. - raw_read() of RGB and clear channels - triggered buffer w/ DRDY interrtupt Signed-off-by: Matti Vaittinen Link: https://lore.kernel.org/r/2594162f0e44148cffb1fb05f1d6edfde6bd11bc.1683541225.git.mazziesaccount@gmail.com Signed-off-by: Jonathan Cameron

iio: light: Add support for TI OPT4001 light sensor

2023-05-13T16:56:06+00:00

This driver uses the continuous mode of the chip and integration time can be configured through sysfs. The constants for calculating lux value differs between packaging so it uses different compatible string for the two versions "ti,opt4001-picostar" and "ti,opt4001-sot-5x3" since the device id is the same. Datasheet: https://www.ti.com/lit/gpn/opt4001 Signed-off-by: Stefan Windfeldt-Prytz Link: https://lore.kernel.org/r/20230323-add-opt4001-driver-v3-2-62e121dab294@axis.com Signed-off-by: Jonathan Cameron

iio: light: ROHM BU27034 Ambient Light Sensor

2023-04-10T11:26:35+00:00

ROHM BU27034 is an ambient light sensor with 3 channels and 3 photo diodes capable of detecting a very wide range of illuminance. Typical application is adjusting LCD and backlight power of TVs and mobile phones. Add initial support for the ROHM BU27034 ambient light sensor. NOTE: - Driver exposes 4 channels. One IIO_LIGHT channel providing the calculated lux values based on measured data from diodes #0 and #1. In addition, 3 IIO_INTENSITY channels are emitting the raw register data from all diodes for more intense user-space computations. - Sensor has GAIN values that can be adjusted from 1x to 4096x. - Sensor has adjustible measurement times of 5, 55, 100, 200 and 400 mS. Driver does not support 5 mS which has special limitations. - Driver exposes standard 'scale' adjustment which is implemented by: 1) Trying to adjust only the GAIN 2) If GAIN adjustment alone can't provide requested scale, adjusting both the time and the gain is attempted. - Driver exposes writable INT_TIME property that can be used for adjusting the measurement time. Time adjustment will also cause the driver to try to adjust the GAIN so that the overall scale is kept as close to the original as possible. Signed-off-by: Matti Vaittinen Link: https://lore.kernel.org/r/2a7efb6f335da5526fbe34b95137c5e45db5c5d3.1680263956.git.mazziesaccount@gmail.com Signed-off-by: Jonathan Cameron

iio: light: rpr0521: add missing Kconfig dependencies

2022-11-12T17:36:02+00:00

Fix an implicit declaration of function error for rpr0521 under some configs When CONFIG_RPR0521 is enabled without CONFIG_IIO_TRIGGERED_BUFFER, the build results in "implicit declaration of function" errors, e.g., drivers/iio/light/rpr0521.c:434:3: error: implicit declaration of function 'iio_trigger_poll_chained' [-Werror=implicit-function-declaration] 434 | iio_trigger_poll_chained(data->drdy_trigger0); | ^~~~~~~~~~~~~~~~~~~~~~~~ This fix adds select dependencies to RPR0521's configuration declaration. Fixes: e12ffd241c00 ("iio: light: rpr0521 triggered buffer") Signed-off-by: Paul Gazzillo Link: https://bugzilla.kernel.org/show_bug.cgi?id=216678 Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/20221110214729.ls5ixav5kxpeftk7@device Signed-off-by: Jonathan Cameron

iio: light: Add support for ltrf216a sensor

2022-08-15T21:29:57+00:00

Add initial support for ltrf216a ambient light sensor. Datasheet: https://gitlab.collabora.com/shreeya/iio/-/blob/master/LTRF216A.pdf Reviewed-by: Andy Shevchenko Co-developed-by: Zhigang Shi Signed-off-by: Zhigang Shi Co-developed-by: Dmitry Osipenko Signed-off-by: Dmitry Osipenko Signed-off-by: Shreeya Patel Link: https://lore.kernel.org/r/20220725104050.491396-3-shreeya.patel@collabora.com Signed-off-by: Jonathan Cameron

iio: light: cm3605: Drop dependency on OF

2022-04-28T18:22:55+00:00

Nothing in this driver depends on OF firmware so drop the dependency to remove the false impression such a dependency exists. Signed-off-by: Andy Shevchenko Link: https://lore.kernel.org/r/20220413184627.21125-1-andriy.shevchenko@linux.intel.com Signed-off-by: Jonathan Cameron

iio: light: Added AMS tsl2591 driver implementation

2021-05-17T12:49:06+00:00

Driver implementation for AMS/TAOS tsl2591 ambient light sensor. This driver supports configuration via device tree and sysfs. Supported channels for raw infrared light intensity, raw combined light intensity and illuminance in lux. The driver additionally supports iio events on lower and upper thresholds. This is a very-high sensitivity light-to-digital converter that transforms light intensity into a digital signal. Datasheet: https://ams.com/tsl25911#tab/documents Signed-off-by: Joe Sandom Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/20210421221330.17007-1-joe.g.sandom@gmail.com Signed-off-by: Jonathan Cameron

iio: hid-sensors: select IIO_TRIGGERED_BUFFER under HID_SENSOR_IIO_TRIGGER

2021-05-10T13:01:48+00:00

During commit 067fda1c065ff ("iio: hid-sensors: move triggered buffer setup into hid_sensor_setup_trigger"), the iio_triggered_buffer_{setup,cleanup}() functions got moved under the hid-sensor-trigger module. The above change works fine, if any of the sensors get built. However, when only the common hid-sensor-trigger module gets built (and none of the drivers), then the IIO_TRIGGERED_BUFFER symbol isn't selected/enforced. Previously, each driver would enforce/select the IIO_TRIGGERED_BUFFER symbol. With this change the HID_SENSOR_IIO_TRIGGER (for the hid-sensor-trigger module) will enforce that IIO_TRIGGERED_BUFFER gets selected. All HID sensor drivers select the HID_SENSOR_IIO_TRIGGER symbol. So, this change removes the IIO_TRIGGERED_BUFFER enforcement from each driver. Fixes: 067fda1c065ff ("iio: hid-sensors: move triggered buffer setup into hid_sensor_setup_trigger") Reported-by: Thomas Deutschmann Cc: Srinivas Pandruvada Signed-off-by: Alexandru Ardelean Acked-by: Srinivas Pandruvada Link: https://lore.kernel.org/r/20210414084955.260117-1-aardelean@deviqon.com Signed-off-by: Jonathan Cameron

iio: light: fix kconfig dependency bug for VCNL4035

2020-11-08T15:43:44+00:00

When VCNL4035 is enabled and IIO_BUFFER is disabled, it results in the following Kbuild warning: WARNING: unmet direct dependencies detected for IIO_TRIGGERED_BUFFER Depends on [n]: IIO [=y] && IIO_BUFFER [=n] Selected by [y]: - VCNL4035 [=y] && IIO [=y] && I2C [=y] The reason is that VCNL4035 selects IIO_TRIGGERED_BUFFER without depending on or selecting IIO_BUFFER while IIO_TRIGGERED_BUFFER depends on IIO_BUFFER. This can also fail building the kernel. Honor the kconfig dependency to remove unmet direct dependency warnings and avoid any potential build failures. Fixes: 55707294c4eb ("iio: light: Add support for vishay vcnl4035") Signed-off-by: Necip Fazil Yildiran Link: https://bugzilla.kernel.org/show_bug.cgi?id=209883 Link: https://lore.kernel.org/r/20201102223523.572461-1-fazilyildiran@gmail.com Cc: Signed-off-by: Jonathan Cameron

iio: light: as73211: New driver

2020-09-03T18:40:40+00:00

Support for AMS AS73211 JENCOLOR(R) Digital XYZ Sensor. This driver has no built-in trigger. In order for making triggered measurements, an external (software) trigger driver like iio-trig-hrtimer or iio-trig-sysfs is required. The sensor supports single and continuous measurement modes. The latter is not used by design as this would require tight timing synchronization between hardware and driver without much benefit. Datasheet: https://ams.com/documents/20143/36005/AS73211_DS000556_3-01.pdf Signed-off-by: Christian Eggers Reviewed-by: Andy Shevchenko Signed-off-by: Jonathan Cameron