diff options
| -rw-r--r-- | Documentation/devicetree/bindings/staging/iio/light/cm3217-als.txt | 28 | ||||
| -rw-r--r-- | drivers/staging/iio/light/Kconfig | 5 | ||||
| -rw-r--r-- | drivers/staging/iio/light/cm3217.c | 14 |
3 files changed, 46 insertions, 1 deletions
diff --git a/Documentation/devicetree/bindings/staging/iio/light/cm3217-als.txt b/Documentation/devicetree/bindings/staging/iio/light/cm3217-als.txt new file mode 100644 index 000000000000..2694b20bc1db --- /dev/null +++ b/Documentation/devicetree/bindings/staging/iio/light/cm3217-als.txt @@ -0,0 +1,28 @@ +* Capella CM3217 ambient light sensor + +Required properties: +- compatible: must be "capella,cm3217" +- reg: i2c address of the device. It should be 0x10. +- vdd-supply: regulator supply for the chip + +Optional propertied: +- illuminance,integration-time: minimum sampling period in nano seconds. + default: ""480000"" +- illuminance,max-range: maximum range of this sensor's value in SI units. + default: "78643.2" +- illuminance,resolution: conversion factor from sensor raw units to lux. + default: "307" +- illuminance,power-consumed: rough estimate of this sensor's power consumption in mA. + default: "1670" + +Example: + cm3217@10 { + compatible = "capella,cm3217"; + reg = <0x10>; + vdd-supply = <&palmas_smps9>; + illuminance,integration-time = "480000"; + illuminance,max-range = "78643.2"; + illuminance,resolution = "7675"; + illuminance,power-consumed = "1670"; /* milli Watt */ + }; + diff --git a/drivers/staging/iio/light/Kconfig b/drivers/staging/iio/light/Kconfig index 49d0b146450e..3630c68dee51 100644 --- a/drivers/staging/iio/light/Kconfig +++ b/drivers/staging/iio/light/Kconfig @@ -98,9 +98,14 @@ config SENSORS_TCS3772 config SENSORS_CM3217 tristate "CM3217 Ambient light sensor" depends on I2C + select LS_OF + select LS_SYSFS default n help Say Y here to enable the CM3217 Ambient Light Sensor. + This driver will provide the measurements of ambient light intensity + in its own units. + Data from sensor is accessible via sysfs. config LS_OF tristate "Device Tree parsing for Light sensor specification details" diff --git a/drivers/staging/iio/light/cm3217.c b/drivers/staging/iio/light/cm3217.c index e5cc8e7f7223..a955bb255d7e 100644 --- a/drivers/staging/iio/light/cm3217.c +++ b/drivers/staging/iio/light/cm3217.c @@ -1,4 +1,4 @@ -/* Copyright (c) 2013, NVIDIA CORPORATION. All rights reserved. +/* Copyright (c) 2013-2014, NVIDIA CORPORATION. All rights reserved. * * This program is free software; you can redistribute it and/or modify it * under the terms and conditions of the GNU General Public License, @@ -19,6 +19,8 @@ #include <linux/regulator/consumer.h> #include <linux/iio/iio.h> #include <linux/iio/sysfs.h> +#include <linux/iio/light/ls_sysfs.h> +#include <linux/iio/light/ls_dt.h> /* IT = Integration Time. The amount of time the photons hit the sensor. * STEP = the value from HW which is the photon count during IT. @@ -445,6 +447,7 @@ static int cm3217_probe(struct i2c_client *client, { struct cm3217_inf *inf; struct iio_dev *indio_dev; + struct lightsensor_spec *ls_spec; int err; indio_dev = iio_device_alloc(sizeof(*inf)); @@ -455,6 +458,15 @@ static int cm3217_probe(struct i2c_client *client, inf = iio_priv(indio_dev); + ls_spec = of_get_ls_spec(&client->dev); + if (!ls_spec) { + dev_warn(&client->dev, + "devname:%s func:%s line:%d invalid meta data, use default\n", + id->name, __func__, __LINE__); + } else { + fill_ls_attrs(ls_spec, cm3217_attrs); + } + inf->wq = create_singlethread_workqueue(CM3217_NAME); if (!inf->wq) { dev_err(&client->dev, "%s workqueue err\n", __func__); |