// SPDX-License-Identifier: GPL-2.0+ /* * apds9960.c - Support for Avago APDS9960 gesture/RGB/ALS/proximity sensor * * Copyright (C) 2015, 2018 * Author: Matt Ranostay <[email protected]> * * TODO: gesture + proximity calib offsets */ #include <linux/acpi.h> #include <linux/module.h> #include <linux/init.h> #include <linux/interrupt.h> #include <linux/delay.h> #include <linux/mutex.h> #include <linux/err.h> #include <linux/irq.h> #include <linux/i2c.h> #include <linux/pm_runtime.h> #include <linux/regmap.h> #include <linux/iio/iio.h> #include <linux/iio/buffer.h> #include <linux/iio/events.h> #include <linux/iio/kfifo_buf.h> #include <linux/iio/sysfs.h> #define APDS9960_REGMAP_NAME … #define APDS9960_DRV_NAME … #define APDS9960_REG_RAM_START … #define APDS9960_REG_RAM_END … #define APDS9960_REG_ENABLE … #define APDS9960_REG_ATIME … #define APDS9960_REG_WTIME … #define APDS9960_REG_AILTL … #define APDS9960_REG_AILTH … #define APDS9960_REG_AIHTL … #define APDS9960_REG_AIHTH … #define APDS9960_REG_PILT … #define APDS9960_REG_PIHT … #define APDS9960_REG_PERS … #define APDS9960_REG_CONFIG_1 … #define APDS9960_REG_PPULSE … #define APDS9960_REG_CONTROL … #define APDS9960_REG_CONTROL_AGAIN_MASK … #define APDS9960_REG_CONTROL_PGAIN_MASK … #define APDS9960_REG_CONTROL_AGAIN_MASK_SHIFT … #define APDS9960_REG_CONTROL_PGAIN_MASK_SHIFT … #define APDS9960_REG_CONFIG_2 … #define APDS9960_REG_ID … #define APDS9960_REG_STATUS … #define APDS9960_REG_STATUS_PS_INT … #define APDS9960_REG_STATUS_ALS_INT … #define APDS9960_REG_STATUS_GINT … #define APDS9960_REG_PDATA … #define APDS9960_REG_POFFSET_UR … #define APDS9960_REG_POFFSET_DL … #define APDS9960_REG_CONFIG_3 … #define APDS9960_REG_GPENTH … #define APDS9960_REG_GEXTH … #define APDS9960_REG_GCONF_1 … #define APDS9960_REG_GCONF_1_GFIFO_THRES_MASK … #define APDS9960_REG_GCONF_1_GFIFO_THRES_MASK_SHIFT … #define APDS9960_REG_GCONF_2 … #define APDS9960_REG_GCONF_2_GGAIN_MASK … #define APDS9960_REG_GCONF_2_GGAIN_MASK_SHIFT … #define APDS9960_REG_GOFFSET_U … #define APDS9960_REG_GOFFSET_D … #define APDS9960_REG_GPULSE … #define APDS9960_REG_GOFFSET_L … #define APDS9960_REG_GOFFSET_R … #define APDS9960_REG_GCONF_3 … #define APDS9960_REG_GCONF_4 … #define APDS9960_REG_GFLVL … #define APDS9960_REG_GSTATUS … #define APDS9960_REG_IFORCE … #define APDS9960_REG_PICLEAR … #define APDS9960_REG_CICLEAR … #define APDS9960_REG_AICLEAR … #define APDS9960_DEFAULT_PERS … #define APDS9960_DEFAULT_GPENTH … #define APDS9960_DEFAULT_GEXTH … #define APDS9960_MAX_PXS_THRES_VAL … #define APDS9960_MAX_ALS_THRES_VAL … #define APDS9960_MAX_INT_TIME_IN_US … enum apds9960_als_channel_idx { … }; #define APDS9960_REG_ALS_BASE … #define APDS9960_REG_ALS_CHANNEL(_colour) … enum apds9960_gesture_channel_idx { … }; #define APDS9960_REG_GFIFO_BASE … #define APDS9960_REG_GFIFO_DIR(_dir) … struct apds9960_data { … }; enum { … }; static const unsigned int apds9960_offset_regs[][2] = …; static const struct reg_default apds9960_reg_defaults[] = …; static const struct regmap_range apds9960_volatile_ranges[] = …; static const struct regmap_access_table apds9960_volatile_table = …; static const struct regmap_range apds9960_precious_ranges[] = …; static const struct regmap_access_table apds9960_precious_table = …; static const struct regmap_range apds9960_readable_ranges[] = …; static const struct regmap_access_table apds9960_readable_table = …; static const struct regmap_range apds9960_writeable_ranges[] = …; static const struct regmap_access_table apds9960_writeable_table = …; static const struct regmap_config apds9960_regmap_config = …; static const struct iio_event_spec apds9960_pxs_event_spec[] = …; static const struct iio_event_spec apds9960_als_event_spec[] = …; #define APDS9960_GESTURE_CHANNEL(_dir, _si) … #define APDS9960_INTENSITY_CHANNEL(_colour) … static const unsigned long apds9960_scan_masks[] = …; static const struct iio_chan_spec apds9960_channels[] = …; static int apds9960_set_calibbias(struct apds9960_data *data, struct iio_chan_spec const *chan, int calibbias) { … } /* integration time in us */ static const int apds9960_int_time[][2] = …; /* gain mapping */ static const int apds9960_pxs_gain_map[] = …; static const int apds9960_als_gain_map[] = …; static IIO_CONST_ATTR(proximity_scale_available, "1 2 4 8"); static IIO_CONST_ATTR(intensity_scale_available, "1 4 16 64"); static IIO_CONST_ATTR_INT_TIME_AVAIL("0.028 0.1 0.2 0.7"); static struct attribute *apds9960_attributes[] = …; static const struct attribute_group apds9960_attribute_group = …; static const struct reg_field apds9960_reg_field_int_als = …; static const struct reg_field apds9960_reg_field_int_ges = …; static const struct reg_field apds9960_reg_field_int_pxs = …; static const struct reg_field apds9960_reg_field_enable_als = …; static const struct reg_field apds9960_reg_field_enable_ges = …; static const struct reg_field apds9960_reg_field_enable_pxs = …; static int apds9960_set_it_time(struct apds9960_data *data, int val2) { … } static int apds9960_set_pxs_gain(struct apds9960_data *data, int val) { … } static int apds9960_set_als_gain(struct apds9960_data *data, int val) { … } #ifdef CONFIG_PM static int apds9960_set_power_state(struct apds9960_data *data, bool on) { … } #else static int apds9960_set_power_state(struct apds9960_data *data, bool on) { return 0; } #endif static int apds9960_read_raw(struct iio_dev *indio_dev, struct iio_chan_spec const *chan, int *val, int *val2, long mask) { struct apds9960_data *data = iio_priv(indio_dev); __le16 buf; int ret = -EINVAL; if (data->gesture_mode_running) return -EBUSY; switch (mask) { case IIO_CHAN_INFO_RAW: apds9960_set_power_state(data, true); switch (chan->type) { case IIO_PROXIMITY: ret = regmap_read(data->regmap, chan->address, val); if (!ret) ret = IIO_VAL_INT; break; case IIO_INTENSITY: ret = regmap_bulk_read(data->regmap, chan->address, &buf, 2); if (!ret) { ret = IIO_VAL_INT; *val = le16_to_cpu(buf); } break; default: ret = -EINVAL; } apds9960_set_power_state(data, false); break; case IIO_CHAN_INFO_INT_TIME: /* RGB + ALS sensors only have integration time */ mutex_lock(&data->lock); switch (chan->type) { case IIO_INTENSITY: *val = 0; *val2 = data->als_adc_int_us; ret = IIO_VAL_INT_PLUS_MICRO; break; default: ret = -EINVAL; } mutex_unlock(&data->lock); break; case IIO_CHAN_INFO_SCALE: mutex_lock(&data->lock); switch (chan->type) { case IIO_PROXIMITY: *val = apds9960_pxs_gain_map[data->pxs_gain]; ret = IIO_VAL_INT; break; case IIO_INTENSITY: *val = apds9960_als_gain_map[data->als_gain]; ret = IIO_VAL_INT; break; default: ret = -EINVAL; } mutex_unlock(&data->lock); break; case IIO_CHAN_INFO_CALIBBIAS: mutex_lock(&data->lock); *val = data->calibbias[chan->channel]; ret = IIO_VAL_INT; mutex_unlock(&data->lock); break; } return ret; }; static int apds9960_write_raw(struct iio_dev *indio_dev, struct iio_chan_spec const *chan, int val, int val2, long mask) { … } static inline int apds9960_get_thres_reg(const struct iio_chan_spec *chan, enum iio_event_direction dir, u8 *reg) { … } static int apds9960_read_event(struct iio_dev *indio_dev, const struct iio_chan_spec *chan, enum iio_event_type type, enum iio_event_direction dir, enum iio_event_info info, int *val, int *val2) { … } static int apds9960_write_event(struct iio_dev *indio_dev, const struct iio_chan_spec *chan, enum iio_event_type type, enum iio_event_direction dir, enum iio_event_info info, int val, int val2) { … } static int apds9960_read_event_config(struct iio_dev *indio_dev, const struct iio_chan_spec *chan, enum iio_event_type type, enum iio_event_direction dir) { … } static int apds9960_write_event_config(struct iio_dev *indio_dev, const struct iio_chan_spec *chan, enum iio_event_type type, enum iio_event_direction dir, int state) { … } static const struct iio_info apds9960_info = …; static inline int apds9660_fifo_is_empty(struct apds9960_data *data) { … } static void apds9960_read_gesture_fifo(struct apds9960_data *data) { … } static irqreturn_t apds9960_interrupt_handler(int irq, void *private) { … } static int apds9960_set_powermode(struct apds9960_data *data, bool state) { … } static int apds9960_buffer_postenable(struct iio_dev *indio_dev) { … } static int apds9960_buffer_predisable(struct iio_dev *indio_dev) { … } static const struct iio_buffer_setup_ops apds9960_buffer_setup_ops = …; static int apds9960_regfield_init(struct apds9960_data *data) { … } static int apds9960_chip_init(struct apds9960_data *data) { … } static int apds9960_probe(struct i2c_client *client) { … } static void apds9960_remove(struct i2c_client *client) { … } #ifdef CONFIG_PM static int apds9960_runtime_suspend(struct device *dev) { … } static int apds9960_runtime_resume(struct device *dev) { … } #endif static const struct dev_pm_ops apds9960_pm_ops = …; static const struct i2c_device_id apds9960_id[] = …; MODULE_DEVICE_TABLE(i2c, apds9960_id); static const struct acpi_device_id apds9960_acpi_match[] = …; MODULE_DEVICE_TABLE(acpi, apds9960_acpi_match); static const struct of_device_id apds9960_of_match[] = …; MODULE_DEVICE_TABLE(of, apds9960_of_match); static struct i2c_driver apds9960_driver = …; module_i2c_driver(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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