iio: light: Add support for vishay vcnl4035
Add support for VCNL4035, which is capable of Ambient light sensing (ALS) and proximity function. This patch adds support only for ALS function Signed-off-by: Parthiban Nallathambi <pn@denx.de> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Parthiban Nallathambi
Jonathan Cameron
Родитель
efeb87d81c
Коммит
55707294c4
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@ -460,6 +460,19 @@ config VCNL4000
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To compile this driver as a module, choose M here: the
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module will be called vcnl4000.
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config VCNL4035
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tristate "VCNL4035 combined ALS and proximity sensor"
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select IIO_TRIGGERED_BUFFER
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select REGMAP_I2C
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depends on I2C
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help
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Say Y here if you want to build a driver for the Vishay VCNL4035,
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combined ambient light (ALS) and proximity sensor. Currently only ALS
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function is available.
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To compile this driver as a module, choose M here: the
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module will be called vcnl4035.
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config VEML6070
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tristate "VEML6070 UV A light sensor"
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depends on I2C
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@ -45,6 +45,7 @@ obj-$(CONFIG_TSL2772) += tsl2772.o
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obj-$(CONFIG_TSL4531) += tsl4531.o
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obj-$(CONFIG_US5182D) += us5182d.o
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obj-$(CONFIG_VCNL4000) += vcnl4000.o
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obj-$(CONFIG_VCNL4035) += vcnl4035.o
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obj-$(CONFIG_VEML6070) += veml6070.o
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obj-$(CONFIG_VL6180) += vl6180.o
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obj-$(CONFIG_ZOPT2201) += zopt2201.o
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@ -0,0 +1,676 @@
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// SPDX-License-Identifier: GPL-2.0
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/*
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* VCNL4035 Ambient Light and Proximity Sensor - 7-bit I2C slave address 0x60
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*
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* Copyright (c) 2018, DENX Software Engineering GmbH
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* Author: Parthiban Nallathambi <pn@denx.de>
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*
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* TODO: Proximity
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*/
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#include <linux/bitops.h>
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#include <linux/i2c.h>
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#include <linux/module.h>
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#include <linux/pm_runtime.h>
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#include <linux/regmap.h>
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#include <linux/iio/buffer.h>
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#include <linux/iio/events.h>
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#include <linux/iio/iio.h>
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#include <linux/iio/sysfs.h>
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#include <linux/iio/trigger.h>
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#include <linux/iio/trigger_consumer.h>
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#include <linux/iio/triggered_buffer.h>
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#define VCNL4035_DRV_NAME "vcnl4035"
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#define VCNL4035_IRQ_NAME "vcnl4035_event"
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#define VCNL4035_REGMAP_NAME "vcnl4035_regmap"
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/* Device registers */
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#define VCNL4035_ALS_CONF 0x00
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#define VCNL4035_ALS_THDH 0x01
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#define VCNL4035_ALS_THDL 0x02
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#define VCNL4035_ALS_DATA 0x0B
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#define VCNL4035_WHITE_DATA 0x0C
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#define VCNL4035_INT_FLAG 0x0D
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#define VCNL4035_DEV_ID 0x0E
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/* Register masks */
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#define VCNL4035_MODE_ALS_MASK BIT(0)
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#define VCNL4035_MODE_ALS_WHITE_CHAN BIT(8)
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#define VCNL4035_MODE_ALS_INT_MASK BIT(1)
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#define VCNL4035_ALS_IT_MASK GENMASK(7, 5)
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#define VCNL4035_ALS_PERS_MASK GENMASK(3, 2)
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#define VCNL4035_INT_ALS_IF_H_MASK BIT(12)
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#define VCNL4035_INT_ALS_IF_L_MASK BIT(13)
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/* Default values */
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#define VCNL4035_MODE_ALS_ENABLE BIT(0)
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#define VCNL4035_MODE_ALS_DISABLE 0x00
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#define VCNL4035_MODE_ALS_INT_ENABLE BIT(1)
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#define VCNL4035_MODE_ALS_INT_DISABLE 0
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#define VCNL4035_DEV_ID_VAL 0x80
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#define VCNL4035_ALS_IT_DEFAULT 0x01
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#define VCNL4035_ALS_PERS_DEFAULT 0x00
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#define VCNL4035_ALS_THDH_DEFAULT 5000
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#define VCNL4035_ALS_THDL_DEFAULT 100
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#define VCNL4035_SLEEP_DELAY_MS 2000
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struct vcnl4035_data {
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struct i2c_client *client;
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struct regmap *regmap;
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unsigned int als_it_val;
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unsigned int als_persistence;
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unsigned int als_thresh_low;
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unsigned int als_thresh_high;
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struct iio_trigger *drdy_trigger0;
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};
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static inline bool vcnl4035_is_triggered(struct vcnl4035_data *data)
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{
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int ret;
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int reg;
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ret = regmap_read(data->regmap, VCNL4035_INT_FLAG, ®);
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if (ret < 0)
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return false;
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return !!(reg &
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(VCNL4035_INT_ALS_IF_H_MASK | VCNL4035_INT_ALS_IF_L_MASK));
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}
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static irqreturn_t vcnl4035_drdy_irq_thread(int irq, void *private)
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{
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struct iio_dev *indio_dev = private;
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struct vcnl4035_data *data = iio_priv(indio_dev);
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if (vcnl4035_is_triggered(data)) {
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iio_push_event(indio_dev, IIO_UNMOD_EVENT_CODE(IIO_LIGHT,
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0,
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IIO_EV_TYPE_THRESH,
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IIO_EV_DIR_EITHER),
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iio_get_time_ns(indio_dev));
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iio_trigger_poll_chained(data->drdy_trigger0);
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return IRQ_HANDLED;
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}
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return IRQ_NONE;
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}
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/* Triggered buffer */
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static irqreturn_t vcnl4035_trigger_consumer_handler(int irq, void *p)
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{
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struct iio_poll_func *pf = p;
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struct iio_dev *indio_dev = pf->indio_dev;
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struct vcnl4035_data *data = iio_priv(indio_dev);
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u8 buffer[ALIGN(sizeof(u16), sizeof(s64)) + sizeof(s64)];
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int ret;
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ret = regmap_read(data->regmap, VCNL4035_ALS_DATA, (int *)buffer);
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if (ret < 0) {
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dev_err(&data->client->dev,
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"Trigger consumer can't read from sensor.\n");
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goto fail_read;
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}
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iio_push_to_buffers_with_timestamp(indio_dev, buffer,
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iio_get_time_ns(indio_dev));
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fail_read:
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iio_trigger_notify_done(indio_dev->trig);
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return IRQ_HANDLED;
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}
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static int vcnl4035_als_drdy_set_state(struct iio_trigger *trigger,
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bool enable_drdy)
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{
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struct iio_dev *indio_dev = iio_trigger_get_drvdata(trigger);
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struct vcnl4035_data *data = iio_priv(indio_dev);
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int val = enable_drdy ? VCNL4035_MODE_ALS_INT_ENABLE :
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VCNL4035_MODE_ALS_INT_DISABLE;
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return regmap_update_bits(data->regmap, VCNL4035_ALS_CONF,
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VCNL4035_MODE_ALS_INT_MASK,
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val);
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}
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static const struct iio_trigger_ops vcnl4035_trigger_ops = {
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.validate_device = iio_trigger_validate_own_device,
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.set_trigger_state = vcnl4035_als_drdy_set_state,
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};
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static int vcnl4035_set_pm_runtime_state(struct vcnl4035_data *data, bool on)
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{
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int ret;
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struct device *dev = &data->client->dev;
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if (on) {
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ret = pm_runtime_get_sync(dev);
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if (ret < 0)
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pm_runtime_put_noidle(dev);
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} else {
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pm_runtime_mark_last_busy(dev);
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ret = pm_runtime_put_autosuspend(dev);
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}
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return ret;
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}
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/*
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* Device IT INT Time (ms) Scale (lux/step)
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* 000 50 0.064
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* 001 100 0.032
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* 010 200 0.016
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* 100 400 0.008
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* 101 - 111 800 0.004
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* Values are proportional, so ALS INT is selected for input due to
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* simplicity reason. Integration time value and scaling is
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* calculated based on device INT value
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*
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* Raw value needs to be scaled using ALS steps
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*/
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static int vcnl4035_read_raw(struct iio_dev *indio_dev,
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struct iio_chan_spec const *chan, int *val,
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int *val2, long mask)
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{
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struct vcnl4035_data *data = iio_priv(indio_dev);
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int ret;
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int raw_data;
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unsigned int reg;
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switch (mask) {
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case IIO_CHAN_INFO_RAW:
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ret = vcnl4035_set_pm_runtime_state(data, true);
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if (ret < 0)
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return ret;
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ret = iio_device_claim_direct_mode(indio_dev);
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if (!ret) {
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if (chan->channel)
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reg = VCNL4035_ALS_DATA;
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else
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reg = VCNL4035_WHITE_DATA;
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ret = regmap_read(data->regmap, reg, &raw_data);
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iio_device_release_direct_mode(indio_dev);
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if (!ret) {
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*val = raw_data;
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ret = IIO_VAL_INT;
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}
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}
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vcnl4035_set_pm_runtime_state(data, false);
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return ret;
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case IIO_CHAN_INFO_INT_TIME:
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*val = 50;
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if (data->als_it_val)
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*val = data->als_it_val * 100;
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return IIO_VAL_INT;
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case IIO_CHAN_INFO_SCALE:
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*val = 64;
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if (!data->als_it_val)
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*val2 = 1000;
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else
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*val2 = data->als_it_val * 2 * 1000;
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return IIO_VAL_FRACTIONAL;
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default:
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return -EINVAL;
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}
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}
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static int vcnl4035_write_raw(struct iio_dev *indio_dev,
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struct iio_chan_spec const *chan,
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int val, int val2, long mask)
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{
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int ret;
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struct vcnl4035_data *data = iio_priv(indio_dev);
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switch (mask) {
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case IIO_CHAN_INFO_INT_TIME:
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if (val <= 0 || val > 800)
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return -EINVAL;
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ret = vcnl4035_set_pm_runtime_state(data, true);
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if (ret < 0)
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return ret;
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ret = regmap_update_bits(data->regmap, VCNL4035_ALS_CONF,
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VCNL4035_ALS_IT_MASK,
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val / 100);
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if (!ret)
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data->als_it_val = val / 100;
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vcnl4035_set_pm_runtime_state(data, false);
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return ret;
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default:
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return -EINVAL;
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}
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}
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/* No direct ABI for persistence and threshold, so eventing */
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static int vcnl4035_read_thresh(struct iio_dev *indio_dev,
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const struct iio_chan_spec *chan, enum iio_event_type type,
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enum iio_event_direction dir, enum iio_event_info info,
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int *val, int *val2)
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{
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struct vcnl4035_data *data = iio_priv(indio_dev);
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switch (info) {
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case IIO_EV_INFO_VALUE:
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switch (dir) {
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case IIO_EV_DIR_RISING:
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*val = data->als_thresh_high;
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return IIO_VAL_INT;
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case IIO_EV_DIR_FALLING:
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*val = data->als_thresh_low;
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return IIO_VAL_INT;
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default:
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return -EINVAL;
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}
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break;
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case IIO_EV_INFO_PERIOD:
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*val = data->als_persistence;
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return IIO_VAL_INT;
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default:
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return -EINVAL;
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}
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}
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static int vcnl4035_write_thresh(struct iio_dev *indio_dev,
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const struct iio_chan_spec *chan, enum iio_event_type type,
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enum iio_event_direction dir, enum iio_event_info info, int val,
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int val2)
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{
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struct vcnl4035_data *data = iio_priv(indio_dev);
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int ret;
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switch (info) {
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case IIO_EV_INFO_VALUE:
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/* 16 bit threshold range 0 - 65535 */
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if (val < 0 || val > 65535)
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return -EINVAL;
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if (dir == IIO_EV_DIR_RISING) {
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if (val < data->als_thresh_low)
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return -EINVAL;
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ret = regmap_write(data->regmap, VCNL4035_ALS_THDH,
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val);
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if (ret)
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return ret;
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data->als_thresh_high = val;
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} else {
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if (val > data->als_thresh_high)
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return -EINVAL;
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ret = regmap_write(data->regmap, VCNL4035_ALS_THDL,
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val);
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if (ret)
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return ret;
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data->als_thresh_low = val;
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}
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return ret;
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case IIO_EV_INFO_PERIOD:
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/* allow only 1 2 4 8 as persistence value */
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if (val < 0 || val > 8 || hweight8(val) != 1)
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return -EINVAL;
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ret = regmap_update_bits(data->regmap, VCNL4035_ALS_CONF,
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VCNL4035_ALS_PERS_MASK, val);
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if (!ret)
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data->als_persistence = val;
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return ret;
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default:
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return -EINVAL;
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}
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}
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static IIO_CONST_ATTR_INT_TIME_AVAIL("50 100 200 400 800");
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static struct attribute *vcnl4035_attributes[] = {
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&iio_const_attr_integration_time_available.dev_attr.attr,
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NULL,
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};
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static const struct attribute_group vcnl4035_attribute_group = {
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.attrs = vcnl4035_attributes,
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};
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static const struct iio_info vcnl4035_info = {
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.read_raw = vcnl4035_read_raw,
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.write_raw = vcnl4035_write_raw,
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.read_event_value = vcnl4035_read_thresh,
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.write_event_value = vcnl4035_write_thresh,
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.attrs = &vcnl4035_attribute_group,
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};
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static const struct iio_event_spec vcnl4035_event_spec[] = {
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{
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.type = IIO_EV_TYPE_THRESH,
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.dir = IIO_EV_DIR_RISING,
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.mask_separate = BIT(IIO_EV_INFO_VALUE),
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}, {
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.type = IIO_EV_TYPE_THRESH,
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.dir = IIO_EV_DIR_FALLING,
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.mask_separate = BIT(IIO_EV_INFO_VALUE),
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}, {
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.type = IIO_EV_TYPE_THRESH,
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.dir = IIO_EV_DIR_EITHER,
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.mask_separate = BIT(IIO_EV_INFO_PERIOD),
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},
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};
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enum vcnl4035_scan_index_order {
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VCNL4035_CHAN_INDEX_LIGHT,
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VCNL4035_CHAN_INDEX_WHITE_LED,
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};
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static const struct iio_buffer_setup_ops iio_triggered_buffer_setup_ops = {
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.validate_scan_mask = &iio_validate_scan_mask_onehot,
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};
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static const struct iio_chan_spec vcnl4035_channels[] = {
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{
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.type = IIO_LIGHT,
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.channel = 0,
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.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
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BIT(IIO_CHAN_INFO_INT_TIME) |
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BIT(IIO_CHAN_INFO_SCALE),
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.event_spec = vcnl4035_event_spec,
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.num_event_specs = ARRAY_SIZE(vcnl4035_event_spec),
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.scan_index = VCNL4035_CHAN_INDEX_LIGHT,
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.scan_type = {
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.sign = 'u',
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.realbits = 16,
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.storagebits = 16,
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.endianness = IIO_LE,
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},
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},
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{
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.type = IIO_INTENSITY,
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.channel = 1,
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.modified = 1,
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.channel2 = IIO_MOD_LIGHT_BOTH,
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.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
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.scan_index = VCNL4035_CHAN_INDEX_WHITE_LED,
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.scan_type = {
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.sign = 'u',
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.realbits = 16,
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.storagebits = 16,
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.endianness = IIO_LE,
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},
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},
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};
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static int vcnl4035_set_als_power_state(struct vcnl4035_data *data, u8 status)
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{
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return regmap_update_bits(data->regmap, VCNL4035_ALS_CONF,
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VCNL4035_MODE_ALS_MASK,
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status);
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}
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static int vcnl4035_init(struct vcnl4035_data *data)
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{
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int ret;
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int id;
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ret = regmap_read(data->regmap, VCNL4035_DEV_ID, &id);
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if (ret < 0) {
|
||||
dev_err(&data->client->dev, "Failed to read DEV_ID register\n");
|
||||
return ret;
|
||||
}
|
||||
|
||||
if (id != VCNL4035_DEV_ID_VAL) {
|
||||
dev_err(&data->client->dev, "Wrong id, got %x, expected %x\n",
|
||||
id, VCNL4035_DEV_ID_VAL);
|
||||
return -ENODEV;
|
||||
}
|
||||
|
||||
ret = vcnl4035_set_als_power_state(data, VCNL4035_MODE_ALS_ENABLE);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
/* ALS white channel enable */
|
||||
ret = regmap_update_bits(data->regmap, VCNL4035_ALS_CONF,
|
||||
VCNL4035_MODE_ALS_WHITE_CHAN,
|
||||
1);
|
||||
if (ret) {
|
||||
dev_err(&data->client->dev, "set white channel enable %d\n",
|
||||
ret);
|
||||
return ret;
|
||||
}
|
||||
|
||||
/* set default integration time - 100 ms for ALS */
|
||||
ret = regmap_update_bits(data->regmap, VCNL4035_ALS_CONF,
|
||||
VCNL4035_ALS_IT_MASK,
|
||||
VCNL4035_ALS_IT_DEFAULT);
|
||||
if (ret) {
|
||||
dev_err(&data->client->dev, "set default ALS IT returned %d\n",
|
||||
ret);
|
||||
return ret;
|
||||
}
|
||||
data->als_it_val = VCNL4035_ALS_IT_DEFAULT;
|
||||
|
||||
/* set default persistence time - 1 for ALS */
|
||||
ret = regmap_update_bits(data->regmap, VCNL4035_ALS_CONF,
|
||||
VCNL4035_ALS_PERS_MASK,
|
||||
VCNL4035_ALS_PERS_DEFAULT);
|
||||
if (ret) {
|
||||
dev_err(&data->client->dev, "set default PERS returned %d\n",
|
||||
ret);
|
||||
return ret;
|
||||
}
|
||||
data->als_persistence = VCNL4035_ALS_PERS_DEFAULT;
|
||||
|
||||
/* set default HIGH threshold for ALS */
|
||||
ret = regmap_write(data->regmap, VCNL4035_ALS_THDH,
|
||||
VCNL4035_ALS_THDH_DEFAULT);
|
||||
if (ret) {
|
||||
dev_err(&data->client->dev, "set default THDH returned %d\n",
|
||||
ret);
|
||||
return ret;
|
||||
}
|
||||
data->als_thresh_high = VCNL4035_ALS_THDH_DEFAULT;
|
||||
|
||||
/* set default LOW threshold for ALS */
|
||||
ret = regmap_write(data->regmap, VCNL4035_ALS_THDL,
|
||||
VCNL4035_ALS_THDL_DEFAULT);
|
||||
if (ret) {
|
||||
dev_err(&data->client->dev, "set default THDL returned %d\n",
|
||||
ret);
|
||||
return ret;
|
||||
}
|
||||
data->als_thresh_low = VCNL4035_ALS_THDL_DEFAULT;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static bool vcnl4035_is_volatile_reg(struct device *dev, unsigned int reg)
|
||||
{
|
||||
switch (reg) {
|
||||
case VCNL4035_ALS_CONF:
|
||||
case VCNL4035_DEV_ID:
|
||||
return false;
|
||||
default:
|
||||
return true;
|
||||
}
|
||||
}
|
||||
|
||||
static const struct regmap_config vcnl4035_regmap_config = {
|
||||
.name = VCNL4035_REGMAP_NAME,
|
||||
.reg_bits = 8,
|
||||
.val_bits = 16,
|
||||
.max_register = VCNL4035_DEV_ID,
|
||||
.cache_type = REGCACHE_RBTREE,
|
||||
.volatile_reg = vcnl4035_is_volatile_reg,
|
||||
.val_format_endian = REGMAP_ENDIAN_LITTLE,
|
||||
};
|
||||
|
||||
static int vcnl4035_probe_trigger(struct iio_dev *indio_dev)
|
||||
{
|
||||
int ret;
|
||||
struct vcnl4035_data *data = iio_priv(indio_dev);
|
||||
|
||||
data->drdy_trigger0 = devm_iio_trigger_alloc(
|
||||
indio_dev->dev.parent,
|
||||
"%s-dev%d", indio_dev->name, indio_dev->id);
|
||||
if (!data->drdy_trigger0)
|
||||
return -ENOMEM;
|
||||
|
||||
data->drdy_trigger0->dev.parent = indio_dev->dev.parent;
|
||||
data->drdy_trigger0->ops = &vcnl4035_trigger_ops;
|
||||
iio_trigger_set_drvdata(data->drdy_trigger0, indio_dev);
|
||||
ret = devm_iio_trigger_register(indio_dev->dev.parent,
|
||||
data->drdy_trigger0);
|
||||
if (ret) {
|
||||
dev_err(&data->client->dev, "iio trigger register failed\n");
|
||||
return ret;
|
||||
}
|
||||
|
||||
/* Trigger setup */
|
||||
ret = devm_iio_triggered_buffer_setup(indio_dev->dev.parent, indio_dev,
|
||||
NULL, vcnl4035_trigger_consumer_handler,
|
||||
&iio_triggered_buffer_setup_ops);
|
||||
if (ret < 0) {
|
||||
dev_err(&data->client->dev, "iio triggered buffer setup failed\n");
|
||||
return ret;
|
||||
}
|
||||
|
||||
/* IRQ to trigger mapping */
|
||||
ret = devm_request_threaded_irq(&data->client->dev, data->client->irq,
|
||||
NULL, vcnl4035_drdy_irq_thread,
|
||||
IRQF_TRIGGER_LOW | IRQF_ONESHOT,
|
||||
VCNL4035_IRQ_NAME, indio_dev);
|
||||
if (ret < 0)
|
||||
dev_err(&data->client->dev, "request irq %d for trigger0 failed\n",
|
||||
data->client->irq);
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int vcnl4035_probe(struct i2c_client *client,
|
||||
const struct i2c_device_id *id)
|
||||
{
|
||||
struct vcnl4035_data *data;
|
||||
struct iio_dev *indio_dev;
|
||||
struct regmap *regmap;
|
||||
int ret;
|
||||
|
||||
indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data));
|
||||
if (!indio_dev)
|
||||
return -ENOMEM;
|
||||
|
||||
regmap = devm_regmap_init_i2c(client, &vcnl4035_regmap_config);
|
||||
if (IS_ERR(regmap)) {
|
||||
dev_err(&client->dev, "regmap_init failed!\n");
|
||||
return PTR_ERR(regmap);
|
||||
}
|
||||
|
||||
data = iio_priv(indio_dev);
|
||||
i2c_set_clientdata(client, indio_dev);
|
||||
data->client = client;
|
||||
data->regmap = regmap;
|
||||
|
||||
indio_dev->dev.parent = &client->dev;
|
||||
indio_dev->info = &vcnl4035_info;
|
||||
indio_dev->name = VCNL4035_DRV_NAME;
|
||||
indio_dev->channels = vcnl4035_channels;
|
||||
indio_dev->num_channels = ARRAY_SIZE(vcnl4035_channels);
|
||||
indio_dev->modes = INDIO_DIRECT_MODE;
|
||||
|
||||
ret = vcnl4035_init(data);
|
||||
if (ret < 0) {
|
||||
dev_err(&client->dev, "vcnl4035 chip init failed\n");
|
||||
return ret;
|
||||
}
|
||||
|
||||
if (client->irq > 0) {
|
||||
ret = vcnl4035_probe_trigger(indio_dev);
|
||||
if (ret < 0) {
|
||||
dev_err(&client->dev, "vcnl4035 unable init trigger\n");
|
||||
goto fail_poweroff;
|
||||
}
|
||||
}
|
||||
|
||||
ret = pm_runtime_set_active(&client->dev);
|
||||
if (ret < 0)
|
||||
goto fail_poweroff;
|
||||
|
||||
ret = iio_device_register(indio_dev);
|
||||
if (ret < 0)
|
||||
goto fail_poweroff;
|
||||
|
||||
pm_runtime_enable(&client->dev);
|
||||
pm_runtime_set_autosuspend_delay(&client->dev, VCNL4035_SLEEP_DELAY_MS);
|
||||
pm_runtime_use_autosuspend(&client->dev);
|
||||
|
||||
return 0;
|
||||
|
||||
fail_poweroff:
|
||||
vcnl4035_set_als_power_state(data, VCNL4035_MODE_ALS_DISABLE);
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int vcnl4035_remove(struct i2c_client *client)
|
||||
{
|
||||
struct iio_dev *indio_dev = i2c_get_clientdata(client);
|
||||
|
||||
pm_runtime_dont_use_autosuspend(&client->dev);
|
||||
pm_runtime_disable(&client->dev);
|
||||
iio_device_unregister(indio_dev);
|
||||
pm_runtime_set_suspended(&client->dev);
|
||||
|
||||
return vcnl4035_set_als_power_state(iio_priv(indio_dev),
|
||||
VCNL4035_MODE_ALS_DISABLE);
|
||||
}
|
||||
|
||||
static int __maybe_unused vcnl4035_runtime_suspend(struct device *dev)
|
||||
{
|
||||
struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
|
||||
struct vcnl4035_data *data = iio_priv(indio_dev);
|
||||
int ret;
|
||||
|
||||
ret = vcnl4035_set_als_power_state(data, VCNL4035_MODE_ALS_DISABLE);
|
||||
regcache_mark_dirty(data->regmap);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int __maybe_unused vcnl4035_runtime_resume(struct device *dev)
|
||||
{
|
||||
struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
|
||||
struct vcnl4035_data *data = iio_priv(indio_dev);
|
||||
int ret;
|
||||
|
||||
regcache_sync(data->regmap);
|
||||
ret = vcnl4035_set_als_power_state(data, VCNL4035_MODE_ALS_ENABLE);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
/* wait for 1 ALS integration cycle */
|
||||
msleep(data->als_it_val * 100);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static const struct dev_pm_ops vcnl4035_pm_ops = {
|
||||
SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
|
||||
pm_runtime_force_resume)
|
||||
SET_RUNTIME_PM_OPS(vcnl4035_runtime_suspend,
|
||||
vcnl4035_runtime_resume, NULL)
|
||||
};
|
||||
|
||||
static const struct of_device_id vcnl4035_of_match[] = {
|
||||
{ .compatible = "vishay,vcnl4035", },
|
||||
{ }
|
||||
};
|
||||
MODULE_DEVICE_TABLE(of, vcnl4035_of_match);
|
||||
|
||||
static struct i2c_driver vcnl4035_driver = {
|
||||
.driver = {
|
||||
.name = VCNL4035_DRV_NAME,
|
||||
.pm = &vcnl4035_pm_ops,
|
||||
.of_match_table = vcnl4035_of_match,
|
||||
},
|
||||
.probe = vcnl4035_probe,
|
||||
.remove = vcnl4035_remove,
|
||||
};
|
||||
|
||||
module_i2c_driver(vcnl4035_driver);
|
||||
|
||||
MODULE_AUTHOR("Parthiban Nallathambi <pn@denx.de>");
|
||||
MODULE_DESCRIPTION("VCNL4035 Ambient Light Sensor driver");
|
||||
MODULE_LICENSE("GPL v2");
|
||||
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