// SPDX-License-Identifier: GPL-2.0-only /* * RPR-0521 ROHM Ambient Light and Proximity Sensor * * Copyright (c) 2015, Intel Corporation. * * IIO driver for RPR-0521RS (7-bit I2C slave address 0x38). * * TODO: illuminance channel */ #include <linux/module.h> #include <linux/mod_devicetable.h> #include <linux/init.h> #include <linux/i2c.h> #include <linux/regmap.h> #include <linux/delay.h> #include <linux/iio/iio.h> #include <linux/iio/buffer.h> #include <linux/iio/trigger.h> #include <linux/iio/trigger_consumer.h> #include <linux/iio/triggered_buffer.h> #include <linux/iio/sysfs.h> #include <linux/pm_runtime.h> #define RPR0521_REG_SYSTEM_CTRL … #define RPR0521_REG_MODE_CTRL … #define RPR0521_REG_ALS_CTRL … #define RPR0521_REG_PXS_CTRL … #define RPR0521_REG_PXS_DATA … #define RPR0521_REG_ALS_DATA0 … #define RPR0521_REG_ALS_DATA1 … #define RPR0521_REG_INTERRUPT … #define RPR0521_REG_PS_OFFSET_LSB … #define RPR0521_REG_ID … #define RPR0521_MODE_ALS_MASK … #define RPR0521_MODE_PXS_MASK … #define RPR0521_MODE_MEAS_TIME_MASK … #define RPR0521_ALS_DATA0_GAIN_MASK … #define RPR0521_ALS_DATA0_GAIN_SHIFT … #define RPR0521_ALS_DATA1_GAIN_MASK … #define RPR0521_ALS_DATA1_GAIN_SHIFT … #define RPR0521_PXS_GAIN_MASK … #define RPR0521_PXS_GAIN_SHIFT … #define RPR0521_PXS_PERSISTENCE_MASK … #define RPR0521_INTERRUPT_INT_TRIG_PS_MASK … #define RPR0521_INTERRUPT_INT_TRIG_ALS_MASK … #define RPR0521_INTERRUPT_INT_REASSERT_MASK … #define RPR0521_INTERRUPT_ALS_INT_STATUS_MASK … #define RPR0521_INTERRUPT_PS_INT_STATUS_MASK … #define RPR0521_MODE_ALS_ENABLE … #define RPR0521_MODE_ALS_DISABLE … #define RPR0521_MODE_PXS_ENABLE … #define RPR0521_MODE_PXS_DISABLE … #define RPR0521_PXS_PERSISTENCE_DRDY … #define RPR0521_INTERRUPT_INT_TRIG_PS_ENABLE … #define RPR0521_INTERRUPT_INT_TRIG_PS_DISABLE … #define RPR0521_INTERRUPT_INT_TRIG_ALS_ENABLE … #define RPR0521_INTERRUPT_INT_TRIG_ALS_DISABLE … #define RPR0521_INTERRUPT_INT_REASSERT_ENABLE … #define RPR0521_INTERRUPT_INT_REASSERT_DISABLE … #define RPR0521_MANUFACT_ID … #define RPR0521_DEFAULT_MEAS_TIME … #define RPR0521_DRV_NAME … #define RPR0521_IRQ_NAME … #define RPR0521_REGMAP_NAME … #define RPR0521_SLEEP_DELAY_MS … #define RPR0521_ALS_SCALE_AVAIL … #define RPR0521_PXS_SCALE_AVAIL … struct rpr0521_gain { … }; static const struct rpr0521_gain rpr0521_als_gain[4] = …; static const struct rpr0521_gain rpr0521_pxs_gain[3] = …; enum rpr0521_channel { … }; struct rpr0521_reg_desc { … }; static const struct rpr0521_reg_desc rpr0521_data_reg[] = …; static const struct rpr0521_gain_info { … } rpr0521_gain[] = …; struct rpr0521_samp_freq { … }; static const struct rpr0521_samp_freq rpr0521_samp_freq_i[13] = …; struct rpr0521_data { … }; static IIO_CONST_ATTR(in_intensity_scale_available, RPR0521_ALS_SCALE_AVAIL); static IIO_CONST_ATTR(in_proximity_scale_available, RPR0521_PXS_SCALE_AVAIL); /* * Start with easy freq first, whole table of freq combinations is more * complicated. */ static IIO_CONST_ATTR_SAMP_FREQ_AVAIL("2.5 10"); static struct attribute *rpr0521_attributes[] = …; static const struct attribute_group rpr0521_attribute_group = …; /* Order of the channel data in buffer */ enum rpr0521_scan_index_order { … }; static const unsigned long rpr0521_available_scan_masks[] = …; static const struct iio_chan_spec rpr0521_channels[] = …; static int rpr0521_als_enable(struct rpr0521_data *data, u8 status) { … } static int rpr0521_pxs_enable(struct rpr0521_data *data, u8 status) { … } /** * rpr0521_set_power_state - handles runtime PM state and sensors enabled status * * @data: rpr0521 device private data * @on: state to be set for devices in @device_mask * @device_mask: bitmask specifying for which device we need to update @on state * * Calls for this function must be balanced so that each ON should have matching * OFF. Otherwise pm usage_count gets out of sync. */ static int rpr0521_set_power_state(struct rpr0521_data *data, bool on, u8 device_mask) { … } /* Interrupt register tells if this sensor caused the interrupt or not. */ static inline bool rpr0521_is_triggered(struct rpr0521_data *data) { … } /* IRQ to trigger handler */ static irqreturn_t rpr0521_drdy_irq_handler(int irq, void *private) { … } static irqreturn_t rpr0521_drdy_irq_thread(int irq, void *private) { … } static irqreturn_t rpr0521_trigger_consumer_store_time(int irq, void *p) { … } static irqreturn_t rpr0521_trigger_consumer_handler(int irq, void *p) { … } static int rpr0521_write_int_enable(struct rpr0521_data *data) { … } static int rpr0521_write_int_disable(struct rpr0521_data *data) { … } /* * Trigger producer enable / disable. Note that there will be trigs only when * measurement data is ready to be read. */ static int rpr0521_pxs_drdy_set_state(struct iio_trigger *trigger, bool enable_drdy) { … } static const struct iio_trigger_ops rpr0521_trigger_ops = …; static int rpr0521_buffer_preenable(struct iio_dev *indio_dev) { … } static int rpr0521_buffer_postdisable(struct iio_dev *indio_dev) { … } static const struct iio_buffer_setup_ops rpr0521_buffer_setup_ops = …; static int rpr0521_get_gain(struct rpr0521_data *data, int chan, int *val, int *val2) { … } static int rpr0521_set_gain(struct rpr0521_data *data, int chan, int val, int val2) { … } static int rpr0521_read_samp_freq(struct rpr0521_data *data, enum iio_chan_type chan_type, int *val, int *val2) { … } static int rpr0521_write_samp_freq_common(struct rpr0521_data *data, enum iio_chan_type chan_type, int val, int val2) { … } static int rpr0521_read_ps_offset(struct rpr0521_data *data, int *offset) { … } static int rpr0521_write_ps_offset(struct rpr0521_data *data, int offset) { … } static int rpr0521_read_raw(struct iio_dev *indio_dev, struct iio_chan_spec const *chan, int *val, int *val2, long mask) { … } static int rpr0521_write_raw(struct iio_dev *indio_dev, struct iio_chan_spec const *chan, int val, int val2, long mask) { … } static const struct iio_info rpr0521_info = …; static int rpr0521_init(struct rpr0521_data *data) { … } static int rpr0521_poweroff(struct rpr0521_data *data) { … } static bool rpr0521_is_volatile_reg(struct device *dev, unsigned int reg) { … } static const struct regmap_config rpr0521_regmap_config = …; static int rpr0521_probe(struct i2c_client *client) { … } static void rpr0521_remove(struct i2c_client *client) { … } static int rpr0521_runtime_suspend(struct device *dev) { … } static int rpr0521_runtime_resume(struct device *dev) { … } static const struct dev_pm_ops rpr0521_pm_ops = …; static const struct acpi_device_id rpr0521_acpi_match[] = …; MODULE_DEVICE_TABLE(acpi, rpr0521_acpi_match); static const struct i2c_device_id rpr0521_id[] = …; MODULE_DEVICE_TABLE(i2c, rpr0521_id); static struct i2c_driver rpr0521_driver = …; module_i2c_driver(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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