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682 lines
17 KiB
682 lines
17 KiB
// 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 <[email protected]> |
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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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|
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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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|
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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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|
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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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|
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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) { |
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dev_err(&data->client->dev, "Failed to read DEV_ID register\n"); |
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return ret; |
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} |
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if (id != VCNL4035_DEV_ID_VAL) { |
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dev_err(&data->client->dev, "Wrong id, got %x, expected %x\n", |
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id, VCNL4035_DEV_ID_VAL); |
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return -ENODEV; |
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} |
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ret = vcnl4035_set_als_power_state(data, VCNL4035_MODE_ALS_ENABLE); |
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if (ret < 0) |
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return ret; |
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|
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/* ALS white channel enable */ |
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ret = regmap_update_bits(data->regmap, VCNL4035_ALS_CONF, |
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VCNL4035_MODE_ALS_WHITE_CHAN, |
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1); |
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if (ret) { |
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dev_err(&data->client->dev, "set white channel enable %d\n", |
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ret); |
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return ret; |
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} |
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|
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/* set default integration time - 100 ms for ALS */ |
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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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VCNL4035_ALS_IT_DEFAULT); |
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if (ret) { |
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dev_err(&data->client->dev, "set default ALS IT returned %d\n", |
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ret); |
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return ret; |
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} |
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data->als_it_val = VCNL4035_ALS_IT_DEFAULT; |
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|
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/* set default persistence time - 1 for ALS */ |
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ret = regmap_update_bits(data->regmap, VCNL4035_ALS_CONF, |
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VCNL4035_ALS_PERS_MASK, |
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VCNL4035_ALS_PERS_DEFAULT); |
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if (ret) { |
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dev_err(&data->client->dev, "set default PERS returned %d\n", |
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ret); |
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return ret; |
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} |
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data->als_persistence = VCNL4035_ALS_PERS_DEFAULT; |
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|
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/* set default HIGH threshold for ALS */ |
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ret = regmap_write(data->regmap, VCNL4035_ALS_THDH, |
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VCNL4035_ALS_THDH_DEFAULT); |
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if (ret) { |
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dev_err(&data->client->dev, "set default THDH returned %d\n", |
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ret); |
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return ret; |
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} |
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data->als_thresh_high = VCNL4035_ALS_THDH_DEFAULT; |
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|
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/* set default LOW threshold for ALS */ |
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ret = regmap_write(data->regmap, VCNL4035_ALS_THDL, |
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VCNL4035_ALS_THDL_DEFAULT); |
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if (ret) { |
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dev_err(&data->client->dev, "set default THDL returned %d\n", |
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ret); |
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return ret; |
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} |
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data->als_thresh_low = VCNL4035_ALS_THDL_DEFAULT; |
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|
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return 0; |
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} |
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static bool vcnl4035_is_volatile_reg(struct device *dev, unsigned int reg) |
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{ |
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switch (reg) { |
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case VCNL4035_ALS_CONF: |
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case VCNL4035_DEV_ID: |
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return false; |
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default: |
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return true; |
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} |
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} |
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static const struct regmap_config vcnl4035_regmap_config = { |
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.name = VCNL4035_REGMAP_NAME, |
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.reg_bits = 8, |
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.val_bits = 16, |
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.max_register = VCNL4035_DEV_ID, |
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.cache_type = REGCACHE_RBTREE, |
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.volatile_reg = vcnl4035_is_volatile_reg, |
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.val_format_endian = REGMAP_ENDIAN_LITTLE, |
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}; |
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static int vcnl4035_probe_trigger(struct iio_dev *indio_dev) |
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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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|
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data->drdy_trigger0 = devm_iio_trigger_alloc( |
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indio_dev->dev.parent, |
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"%s-dev%d", indio_dev->name, indio_dev->id); |
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if (!data->drdy_trigger0) |
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return -ENOMEM; |
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|
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data->drdy_trigger0->dev.parent = indio_dev->dev.parent; |
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data->drdy_trigger0->ops = &vcnl4035_trigger_ops; |
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iio_trigger_set_drvdata(data->drdy_trigger0, indio_dev); |
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ret = devm_iio_trigger_register(indio_dev->dev.parent, |
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data->drdy_trigger0); |
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if (ret) { |
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dev_err(&data->client->dev, "iio trigger register failed\n"); |
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return ret; |
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} |
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|
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/* Trigger setup */ |
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ret = devm_iio_triggered_buffer_setup(indio_dev->dev.parent, indio_dev, |
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NULL, vcnl4035_trigger_consumer_handler, |
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&iio_triggered_buffer_setup_ops); |
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if (ret < 0) { |
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dev_err(&data->client->dev, "iio triggered buffer setup failed\n"); |
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return ret; |
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} |
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|
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/* IRQ to trigger mapping */ |
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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->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 i2c_device_id vcnl4035_id[] = { |
|
{ "vcnl4035", 0}, |
|
{ } |
|
}; |
|
MODULE_DEVICE_TABLE(i2c, vcnl4035_id); |
|
|
|
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, |
|
.id_table = vcnl4035_id, |
|
}; |
|
|
|
module_i2c_driver(vcnl4035_driver); |
|
|
|
MODULE_AUTHOR("Parthiban Nallathambi <[email protected]>"); |
|
MODULE_DESCRIPTION("VCNL4035 Ambient Light Sensor driver"); |
|
MODULE_LICENSE("GPL v2");
|
|
|