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![Krzysztof Kozlowski](/assets/img/avatar_default.png)
Common pattern of handling deferred probe can be simplified with dev_err_probe(). Less code and also it prints the error value. Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Link: https://lore.kernel.org/r/20200829064726.26268-15-krzk@kernel.org Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
1947 lines
48 KiB
C
1947 lines
48 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Device driver for monitoring ambient light intensity in (lux) and proximity
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* detection (prox) within the TAOS TSL2571, TSL2671, TMD2671, TSL2771, TMD2771,
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* TSL2572, TSL2672, TMD2672, TSL2772, and TMD2772 devices.
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*
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* Copyright (c) 2012, TAOS Corporation.
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* Copyright (c) 2017-2018 Brian Masney <masneyb@onstation.org>
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*/
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#include <linux/delay.h>
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#include <linux/errno.h>
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#include <linux/i2c.h>
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#include <linux/interrupt.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/mutex.h>
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#include <linux/slab.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/platform_data/tsl2772.h>
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#include <linux/regulator/consumer.h>
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/* Cal defs */
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#define PROX_STAT_CAL 0
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#define PROX_STAT_SAMP 1
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#define MAX_SAMPLES_CAL 200
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/* TSL2772 Device ID */
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#define TRITON_ID 0x00
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#define SWORDFISH_ID 0x30
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#define HALIBUT_ID 0x20
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/* Lux calculation constants */
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#define TSL2772_LUX_CALC_OVER_FLOW 65535
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/*
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* TAOS Register definitions - Note: depending on device, some of these register
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* are not used and the register address is benign.
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*/
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/* Register offsets */
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#define TSL2772_MAX_CONFIG_REG 16
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/* Device Registers and Masks */
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#define TSL2772_CNTRL 0x00
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#define TSL2772_ALS_TIME 0X01
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#define TSL2772_PRX_TIME 0x02
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#define TSL2772_WAIT_TIME 0x03
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#define TSL2772_ALS_MINTHRESHLO 0X04
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#define TSL2772_ALS_MINTHRESHHI 0X05
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#define TSL2772_ALS_MAXTHRESHLO 0X06
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#define TSL2772_ALS_MAXTHRESHHI 0X07
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#define TSL2772_PRX_MINTHRESHLO 0X08
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#define TSL2772_PRX_MINTHRESHHI 0X09
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#define TSL2772_PRX_MAXTHRESHLO 0X0A
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#define TSL2772_PRX_MAXTHRESHHI 0X0B
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#define TSL2772_PERSISTENCE 0x0C
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#define TSL2772_ALS_PRX_CONFIG 0x0D
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#define TSL2772_PRX_COUNT 0x0E
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#define TSL2772_GAIN 0x0F
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#define TSL2772_NOTUSED 0x10
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#define TSL2772_REVID 0x11
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#define TSL2772_CHIPID 0x12
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#define TSL2772_STATUS 0x13
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#define TSL2772_ALS_CHAN0LO 0x14
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#define TSL2772_ALS_CHAN0HI 0x15
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#define TSL2772_ALS_CHAN1LO 0x16
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#define TSL2772_ALS_CHAN1HI 0x17
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#define TSL2772_PRX_LO 0x18
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#define TSL2772_PRX_HI 0x19
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/* tsl2772 cmd reg masks */
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#define TSL2772_CMD_REG 0x80
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#define TSL2772_CMD_SPL_FN 0x60
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#define TSL2772_CMD_REPEAT_PROTO 0x00
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#define TSL2772_CMD_AUTOINC_PROTO 0x20
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#define TSL2772_CMD_PROX_INT_CLR 0X05
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#define TSL2772_CMD_ALS_INT_CLR 0x06
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#define TSL2772_CMD_PROXALS_INT_CLR 0X07
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/* tsl2772 cntrl reg masks */
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#define TSL2772_CNTL_ADC_ENBL 0x02
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#define TSL2772_CNTL_PWR_ON 0x01
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/* tsl2772 status reg masks */
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#define TSL2772_STA_ADC_VALID 0x01
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#define TSL2772_STA_PRX_VALID 0x02
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#define TSL2772_STA_ADC_PRX_VALID (TSL2772_STA_ADC_VALID | \
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TSL2772_STA_PRX_VALID)
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#define TSL2772_STA_ALS_INTR 0x10
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#define TSL2772_STA_PRX_INTR 0x20
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/* tsl2772 cntrl reg masks */
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#define TSL2772_CNTL_REG_CLEAR 0x00
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#define TSL2772_CNTL_PROX_INT_ENBL 0X20
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#define TSL2772_CNTL_ALS_INT_ENBL 0X10
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#define TSL2772_CNTL_WAIT_TMR_ENBL 0X08
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#define TSL2772_CNTL_PROX_DET_ENBL 0X04
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#define TSL2772_CNTL_PWRON 0x01
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#define TSL2772_CNTL_ALSPON_ENBL 0x03
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#define TSL2772_CNTL_INTALSPON_ENBL 0x13
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#define TSL2772_CNTL_PROXPON_ENBL 0x0F
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#define TSL2772_CNTL_INTPROXPON_ENBL 0x2F
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#define TSL2772_ALS_GAIN_TRIM_MIN 250
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#define TSL2772_ALS_GAIN_TRIM_MAX 4000
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#define TSL2772_MAX_PROX_LEDS 2
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#define TSL2772_BOOT_MIN_SLEEP_TIME 10000
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#define TSL2772_BOOT_MAX_SLEEP_TIME 28000
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/* Device family members */
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enum {
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tsl2571,
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tsl2671,
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tmd2671,
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tsl2771,
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tmd2771,
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tsl2572,
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tsl2672,
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tmd2672,
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tsl2772,
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tmd2772,
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apds9930,
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};
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enum {
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TSL2772_CHIP_UNKNOWN = 0,
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TSL2772_CHIP_WORKING = 1,
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TSL2772_CHIP_SUSPENDED = 2
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};
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enum {
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TSL2772_SUPPLY_VDD = 0,
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TSL2772_SUPPLY_VDDIO = 1,
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TSL2772_NUM_SUPPLIES = 2
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};
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/* Per-device data */
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struct tsl2772_als_info {
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u16 als_ch0;
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u16 als_ch1;
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u16 lux;
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};
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struct tsl2772_chip_info {
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int chan_table_elements;
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struct iio_chan_spec channel_with_events[4];
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struct iio_chan_spec channel_without_events[4];
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const struct iio_info *info;
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};
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static const int tsl2772_led_currents[][2] = {
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{ 100000, TSL2772_100_mA },
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{ 50000, TSL2772_50_mA },
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{ 25000, TSL2772_25_mA },
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{ 13000, TSL2772_13_mA },
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{ 0, 0 }
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};
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struct tsl2772_chip {
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kernel_ulong_t id;
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struct mutex prox_mutex;
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struct mutex als_mutex;
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struct i2c_client *client;
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struct regulator_bulk_data supplies[TSL2772_NUM_SUPPLIES];
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u16 prox_data;
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struct tsl2772_als_info als_cur_info;
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struct tsl2772_settings settings;
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struct tsl2772_platform_data *pdata;
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int als_gain_time_scale;
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int als_saturation;
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int tsl2772_chip_status;
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u8 tsl2772_config[TSL2772_MAX_CONFIG_REG];
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const struct tsl2772_chip_info *chip_info;
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const struct iio_info *info;
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s64 event_timestamp;
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/*
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* This structure is intentionally large to accommodate
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* updates via sysfs.
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* Sized to 9 = max 8 segments + 1 termination segment
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*/
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struct tsl2772_lux tsl2772_device_lux[TSL2772_MAX_LUX_TABLE_SIZE];
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};
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/*
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* Different devices require different coefficents, and these numbers were
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* derived from the 'Lux Equation' section of the various device datasheets.
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* All of these coefficients assume a Glass Attenuation (GA) factor of 1.
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* The coefficients are multiplied by 1000 to avoid floating point operations.
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* The two rows in each table correspond to the Lux1 and Lux2 equations from
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* the datasheets.
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*/
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static const struct tsl2772_lux tsl2x71_lux_table[TSL2772_DEF_LUX_TABLE_SZ] = {
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{ 53000, 106000 },
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{ 31800, 53000 },
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{ 0, 0 },
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};
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static const struct tsl2772_lux tmd2x71_lux_table[TSL2772_DEF_LUX_TABLE_SZ] = {
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{ 24000, 48000 },
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{ 14400, 24000 },
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{ 0, 0 },
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};
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static const struct tsl2772_lux tsl2x72_lux_table[TSL2772_DEF_LUX_TABLE_SZ] = {
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{ 60000, 112200 },
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{ 37800, 60000 },
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{ 0, 0 },
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};
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static const struct tsl2772_lux tmd2x72_lux_table[TSL2772_DEF_LUX_TABLE_SZ] = {
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{ 20000, 35000 },
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{ 12600, 20000 },
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{ 0, 0 },
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};
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static const struct tsl2772_lux apds9930_lux_table[TSL2772_DEF_LUX_TABLE_SZ] = {
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{ 52000, 96824 },
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{ 38792, 67132 },
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{ 0, 0 },
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};
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static const struct tsl2772_lux *tsl2772_default_lux_table_group[] = {
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[tsl2571] = tsl2x71_lux_table,
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[tsl2671] = tsl2x71_lux_table,
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[tmd2671] = tmd2x71_lux_table,
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[tsl2771] = tsl2x71_lux_table,
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[tmd2771] = tmd2x71_lux_table,
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[tsl2572] = tsl2x72_lux_table,
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[tsl2672] = tsl2x72_lux_table,
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[tmd2672] = tmd2x72_lux_table,
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[tsl2772] = tsl2x72_lux_table,
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[tmd2772] = tmd2x72_lux_table,
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[apds9930] = apds9930_lux_table,
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};
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static const struct tsl2772_settings tsl2772_default_settings = {
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.als_time = 255, /* 2.72 / 2.73 ms */
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.als_gain = 0,
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.prox_time = 255, /* 2.72 / 2.73 ms */
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.prox_gain = 0,
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.wait_time = 255,
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.als_prox_config = 0,
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.als_gain_trim = 1000,
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.als_cal_target = 150,
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.als_persistence = 1,
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.als_interrupt_en = false,
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.als_thresh_low = 200,
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.als_thresh_high = 256,
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.prox_persistence = 1,
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.prox_interrupt_en = false,
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.prox_thres_low = 0,
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.prox_thres_high = 512,
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.prox_max_samples_cal = 30,
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.prox_pulse_count = 8,
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.prox_diode = TSL2772_DIODE1,
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.prox_power = TSL2772_100_mA
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};
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static const s16 tsl2772_als_gain[] = {
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1,
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8,
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16,
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120
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};
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static const s16 tsl2772_prox_gain[] = {
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1,
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2,
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4,
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8
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};
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static const int tsl2772_int_time_avail[][6] = {
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[tsl2571] = { 0, 2720, 0, 2720, 0, 696000 },
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[tsl2671] = { 0, 2720, 0, 2720, 0, 696000 },
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[tmd2671] = { 0, 2720, 0, 2720, 0, 696000 },
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[tsl2771] = { 0, 2720, 0, 2720, 0, 696000 },
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[tmd2771] = { 0, 2720, 0, 2720, 0, 696000 },
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[tsl2572] = { 0, 2730, 0, 2730, 0, 699000 },
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[tsl2672] = { 0, 2730, 0, 2730, 0, 699000 },
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[tmd2672] = { 0, 2730, 0, 2730, 0, 699000 },
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[tsl2772] = { 0, 2730, 0, 2730, 0, 699000 },
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[tmd2772] = { 0, 2730, 0, 2730, 0, 699000 },
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[apds9930] = { 0, 2730, 0, 2730, 0, 699000 },
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};
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static int tsl2772_int_calibscale_avail[] = { 1, 8, 16, 120 };
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static int tsl2772_prox_calibscale_avail[] = { 1, 2, 4, 8 };
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/* Channel variations */
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enum {
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ALS,
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PRX,
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ALSPRX,
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PRX2,
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ALSPRX2,
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};
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static const u8 device_channel_config[] = {
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[tsl2571] = ALS,
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[tsl2671] = PRX,
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[tmd2671] = PRX,
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[tsl2771] = ALSPRX,
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[tmd2771] = ALSPRX,
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[tsl2572] = ALS,
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[tsl2672] = PRX2,
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[tmd2672] = PRX2,
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[tsl2772] = ALSPRX2,
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[tmd2772] = ALSPRX2,
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[apds9930] = ALSPRX2,
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};
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static int tsl2772_read_status(struct tsl2772_chip *chip)
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{
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int ret;
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ret = i2c_smbus_read_byte_data(chip->client,
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TSL2772_CMD_REG | TSL2772_STATUS);
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if (ret < 0)
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dev_err(&chip->client->dev,
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"%s: failed to read STATUS register: %d\n", __func__,
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ret);
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return ret;
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}
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static int tsl2772_write_control_reg(struct tsl2772_chip *chip, u8 data)
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{
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int ret;
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ret = i2c_smbus_write_byte_data(chip->client,
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TSL2772_CMD_REG | TSL2772_CNTRL, data);
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if (ret < 0) {
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dev_err(&chip->client->dev,
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"%s: failed to write to control register %x: %d\n",
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__func__, data, ret);
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}
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return ret;
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}
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static int tsl2772_read_autoinc_regs(struct tsl2772_chip *chip, int lower_reg,
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int upper_reg)
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{
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u8 buf[2];
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int ret;
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ret = i2c_smbus_write_byte(chip->client,
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TSL2772_CMD_REG | TSL2772_CMD_AUTOINC_PROTO |
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lower_reg);
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if (ret < 0) {
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dev_err(&chip->client->dev,
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"%s: failed to enable auto increment protocol: %d\n",
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__func__, ret);
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return ret;
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}
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ret = i2c_smbus_read_byte_data(chip->client,
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TSL2772_CMD_REG | lower_reg);
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if (ret < 0) {
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dev_err(&chip->client->dev,
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"%s: failed to read from register %x: %d\n", __func__,
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lower_reg, ret);
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return ret;
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}
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buf[0] = ret;
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ret = i2c_smbus_read_byte_data(chip->client,
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TSL2772_CMD_REG | upper_reg);
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if (ret < 0) {
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dev_err(&chip->client->dev,
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"%s: failed to read from register %x: %d\n", __func__,
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upper_reg, ret);
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return ret;
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}
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buf[1] = ret;
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ret = i2c_smbus_write_byte(chip->client,
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TSL2772_CMD_REG | TSL2772_CMD_REPEAT_PROTO |
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lower_reg);
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if (ret < 0) {
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dev_err(&chip->client->dev,
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"%s: failed to enable repeated byte protocol: %d\n",
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__func__, ret);
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return ret;
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}
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return le16_to_cpup((const __le16 *)&buf[0]);
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}
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/**
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* tsl2772_get_lux() - Reads and calculates current lux value.
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* @indio_dev: pointer to IIO device
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*
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* The raw ch0 and ch1 values of the ambient light sensed in the last
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* integration cycle are read from the device. The raw values are multiplied
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* by a device-specific scale factor, and divided by the integration time and
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* device gain. The code supports multiple lux equations through the lux table
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* coefficients. A lux gain trim is applied to each lux equation, and then the
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* maximum lux within the interval 0..65535 is selected.
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*/
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static int tsl2772_get_lux(struct iio_dev *indio_dev)
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{
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struct tsl2772_chip *chip = iio_priv(indio_dev);
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struct tsl2772_lux *p;
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int max_lux, ret;
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bool overflow;
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mutex_lock(&chip->als_mutex);
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if (chip->tsl2772_chip_status != TSL2772_CHIP_WORKING) {
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dev_err(&chip->client->dev, "%s: device is not enabled\n",
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__func__);
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ret = -EBUSY;
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goto out_unlock;
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}
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ret = tsl2772_read_status(chip);
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if (ret < 0)
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goto out_unlock;
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if (!(ret & TSL2772_STA_ADC_VALID)) {
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dev_err(&chip->client->dev,
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"%s: data not valid yet\n", __func__);
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ret = chip->als_cur_info.lux; /* return LAST VALUE */
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goto out_unlock;
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}
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ret = tsl2772_read_autoinc_regs(chip, TSL2772_ALS_CHAN0LO,
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TSL2772_ALS_CHAN0HI);
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if (ret < 0)
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goto out_unlock;
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chip->als_cur_info.als_ch0 = ret;
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ret = tsl2772_read_autoinc_regs(chip, TSL2772_ALS_CHAN1LO,
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TSL2772_ALS_CHAN1HI);
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if (ret < 0)
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goto out_unlock;
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chip->als_cur_info.als_ch1 = ret;
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if (chip->als_cur_info.als_ch0 >= chip->als_saturation) {
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max_lux = TSL2772_LUX_CALC_OVER_FLOW;
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goto update_struct_with_max_lux;
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}
|
|
|
|
if (!chip->als_cur_info.als_ch0) {
|
|
/* have no data, so return LAST VALUE */
|
|
ret = chip->als_cur_info.lux;
|
|
goto out_unlock;
|
|
}
|
|
|
|
max_lux = 0;
|
|
overflow = false;
|
|
for (p = (struct tsl2772_lux *)chip->tsl2772_device_lux; p->ch0 != 0;
|
|
p++) {
|
|
int lux;
|
|
|
|
lux = ((chip->als_cur_info.als_ch0 * p->ch0) -
|
|
(chip->als_cur_info.als_ch1 * p->ch1)) /
|
|
chip->als_gain_time_scale;
|
|
|
|
/*
|
|
* The als_gain_trim can have a value within the range 250..4000
|
|
* and is a multiplier for the lux. A trim of 1000 makes no
|
|
* changes to the lux, less than 1000 scales it down, and
|
|
* greater than 1000 scales it up.
|
|
*/
|
|
lux = (lux * chip->settings.als_gain_trim) / 1000;
|
|
|
|
if (lux > TSL2772_LUX_CALC_OVER_FLOW) {
|
|
overflow = true;
|
|
continue;
|
|
}
|
|
|
|
max_lux = max(max_lux, lux);
|
|
}
|
|
|
|
if (overflow && max_lux == 0)
|
|
max_lux = TSL2772_LUX_CALC_OVER_FLOW;
|
|
|
|
update_struct_with_max_lux:
|
|
chip->als_cur_info.lux = max_lux;
|
|
ret = max_lux;
|
|
|
|
out_unlock:
|
|
mutex_unlock(&chip->als_mutex);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* tsl2772_get_prox() - Reads proximity data registers and updates
|
|
* chip->prox_data.
|
|
*
|
|
* @indio_dev: pointer to IIO device
|
|
*/
|
|
static int tsl2772_get_prox(struct iio_dev *indio_dev)
|
|
{
|
|
struct tsl2772_chip *chip = iio_priv(indio_dev);
|
|
int ret;
|
|
|
|
mutex_lock(&chip->prox_mutex);
|
|
|
|
ret = tsl2772_read_status(chip);
|
|
if (ret < 0)
|
|
goto prox_poll_err;
|
|
|
|
switch (chip->id) {
|
|
case tsl2571:
|
|
case tsl2671:
|
|
case tmd2671:
|
|
case tsl2771:
|
|
case tmd2771:
|
|
if (!(ret & TSL2772_STA_ADC_VALID)) {
|
|
ret = -EINVAL;
|
|
goto prox_poll_err;
|
|
}
|
|
break;
|
|
case tsl2572:
|
|
case tsl2672:
|
|
case tmd2672:
|
|
case tsl2772:
|
|
case tmd2772:
|
|
case apds9930:
|
|
if (!(ret & TSL2772_STA_PRX_VALID)) {
|
|
ret = -EINVAL;
|
|
goto prox_poll_err;
|
|
}
|
|
break;
|
|
}
|
|
|
|
ret = tsl2772_read_autoinc_regs(chip, TSL2772_PRX_LO, TSL2772_PRX_HI);
|
|
if (ret < 0)
|
|
goto prox_poll_err;
|
|
chip->prox_data = ret;
|
|
|
|
prox_poll_err:
|
|
mutex_unlock(&chip->prox_mutex);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int tsl2772_read_prox_led_current(struct tsl2772_chip *chip)
|
|
{
|
|
struct device_node *of_node = chip->client->dev.of_node;
|
|
int ret, tmp, i;
|
|
|
|
ret = of_property_read_u32(of_node, "led-max-microamp", &tmp);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
for (i = 0; tsl2772_led_currents[i][0] != 0; i++) {
|
|
if (tmp == tsl2772_led_currents[i][0]) {
|
|
chip->settings.prox_power = tsl2772_led_currents[i][1];
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
dev_err(&chip->client->dev, "Invalid value %d for led-max-microamp\n",
|
|
tmp);
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
static int tsl2772_read_prox_diodes(struct tsl2772_chip *chip)
|
|
{
|
|
struct device_node *of_node = chip->client->dev.of_node;
|
|
int i, ret, num_leds, prox_diode_mask;
|
|
u32 leds[TSL2772_MAX_PROX_LEDS];
|
|
|
|
ret = of_property_count_u32_elems(of_node, "amstaos,proximity-diodes");
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
num_leds = ret;
|
|
if (num_leds > TSL2772_MAX_PROX_LEDS)
|
|
num_leds = TSL2772_MAX_PROX_LEDS;
|
|
|
|
ret = of_property_read_u32_array(of_node, "amstaos,proximity-diodes",
|
|
leds, num_leds);
|
|
if (ret < 0) {
|
|
dev_err(&chip->client->dev,
|
|
"Invalid value for amstaos,proximity-diodes: %d.\n",
|
|
ret);
|
|
return ret;
|
|
}
|
|
|
|
prox_diode_mask = 0;
|
|
for (i = 0; i < num_leds; i++) {
|
|
if (leds[i] == 0)
|
|
prox_diode_mask |= TSL2772_DIODE0;
|
|
else if (leds[i] == 1)
|
|
prox_diode_mask |= TSL2772_DIODE1;
|
|
else {
|
|
dev_err(&chip->client->dev,
|
|
"Invalid value %d in amstaos,proximity-diodes.\n",
|
|
leds[i]);
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void tsl2772_parse_dt(struct tsl2772_chip *chip)
|
|
{
|
|
tsl2772_read_prox_led_current(chip);
|
|
tsl2772_read_prox_diodes(chip);
|
|
}
|
|
|
|
/**
|
|
* tsl2772_defaults() - Populates the device nominal operating parameters
|
|
* with those provided by a 'platform' data struct or
|
|
* with prefined defaults.
|
|
*
|
|
* @chip: pointer to device structure.
|
|
*/
|
|
static void tsl2772_defaults(struct tsl2772_chip *chip)
|
|
{
|
|
/* If Operational settings defined elsewhere.. */
|
|
if (chip->pdata && chip->pdata->platform_default_settings)
|
|
memcpy(&chip->settings, chip->pdata->platform_default_settings,
|
|
sizeof(tsl2772_default_settings));
|
|
else
|
|
memcpy(&chip->settings, &tsl2772_default_settings,
|
|
sizeof(tsl2772_default_settings));
|
|
|
|
/* Load up the proper lux table. */
|
|
if (chip->pdata && chip->pdata->platform_lux_table[0].ch0 != 0)
|
|
memcpy(chip->tsl2772_device_lux,
|
|
chip->pdata->platform_lux_table,
|
|
sizeof(chip->pdata->platform_lux_table));
|
|
else
|
|
memcpy(chip->tsl2772_device_lux,
|
|
tsl2772_default_lux_table_group[chip->id],
|
|
TSL2772_DEFAULT_TABLE_BYTES);
|
|
|
|
tsl2772_parse_dt(chip);
|
|
}
|
|
|
|
/**
|
|
* tsl2772_als_calibrate() - Obtain single reading and calculate
|
|
* the als_gain_trim.
|
|
*
|
|
* @indio_dev: pointer to IIO device
|
|
*/
|
|
static int tsl2772_als_calibrate(struct iio_dev *indio_dev)
|
|
{
|
|
struct tsl2772_chip *chip = iio_priv(indio_dev);
|
|
int ret, lux_val;
|
|
|
|
ret = i2c_smbus_read_byte_data(chip->client,
|
|
TSL2772_CMD_REG | TSL2772_CNTRL);
|
|
if (ret < 0) {
|
|
dev_err(&chip->client->dev,
|
|
"%s: failed to read from the CNTRL register\n",
|
|
__func__);
|
|
return ret;
|
|
}
|
|
|
|
if ((ret & (TSL2772_CNTL_ADC_ENBL | TSL2772_CNTL_PWR_ON))
|
|
!= (TSL2772_CNTL_ADC_ENBL | TSL2772_CNTL_PWR_ON)) {
|
|
dev_err(&chip->client->dev,
|
|
"%s: Device is not powered on and/or ADC is not enabled\n",
|
|
__func__);
|
|
return -EINVAL;
|
|
} else if ((ret & TSL2772_STA_ADC_VALID) != TSL2772_STA_ADC_VALID) {
|
|
dev_err(&chip->client->dev,
|
|
"%s: The two ADC channels have not completed an integration cycle\n",
|
|
__func__);
|
|
return -ENODATA;
|
|
}
|
|
|
|
lux_val = tsl2772_get_lux(indio_dev);
|
|
if (lux_val < 0) {
|
|
dev_err(&chip->client->dev,
|
|
"%s: failed to get lux\n", __func__);
|
|
return lux_val;
|
|
}
|
|
if (lux_val == 0)
|
|
return -ERANGE;
|
|
|
|
ret = (chip->settings.als_cal_target * chip->settings.als_gain_trim) /
|
|
lux_val;
|
|
if (ret < TSL2772_ALS_GAIN_TRIM_MIN || ret > TSL2772_ALS_GAIN_TRIM_MAX)
|
|
return -ERANGE;
|
|
|
|
chip->settings.als_gain_trim = ret;
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void tsl2772_disable_regulators_action(void *_data)
|
|
{
|
|
struct tsl2772_chip *chip = _data;
|
|
|
|
regulator_bulk_disable(ARRAY_SIZE(chip->supplies), chip->supplies);
|
|
}
|
|
|
|
static int tsl2772_chip_on(struct iio_dev *indio_dev)
|
|
{
|
|
struct tsl2772_chip *chip = iio_priv(indio_dev);
|
|
int ret, i, als_count, als_time_us;
|
|
u8 *dev_reg, reg_val;
|
|
|
|
/* Non calculated parameters */
|
|
chip->tsl2772_config[TSL2772_ALS_TIME] = chip->settings.als_time;
|
|
chip->tsl2772_config[TSL2772_PRX_TIME] = chip->settings.prox_time;
|
|
chip->tsl2772_config[TSL2772_WAIT_TIME] = chip->settings.wait_time;
|
|
chip->tsl2772_config[TSL2772_ALS_PRX_CONFIG] =
|
|
chip->settings.als_prox_config;
|
|
|
|
chip->tsl2772_config[TSL2772_ALS_MINTHRESHLO] =
|
|
(chip->settings.als_thresh_low) & 0xFF;
|
|
chip->tsl2772_config[TSL2772_ALS_MINTHRESHHI] =
|
|
(chip->settings.als_thresh_low >> 8) & 0xFF;
|
|
chip->tsl2772_config[TSL2772_ALS_MAXTHRESHLO] =
|
|
(chip->settings.als_thresh_high) & 0xFF;
|
|
chip->tsl2772_config[TSL2772_ALS_MAXTHRESHHI] =
|
|
(chip->settings.als_thresh_high >> 8) & 0xFF;
|
|
chip->tsl2772_config[TSL2772_PERSISTENCE] =
|
|
(chip->settings.prox_persistence & 0xFF) << 4 |
|
|
(chip->settings.als_persistence & 0xFF);
|
|
|
|
chip->tsl2772_config[TSL2772_PRX_COUNT] =
|
|
chip->settings.prox_pulse_count;
|
|
chip->tsl2772_config[TSL2772_PRX_MINTHRESHLO] =
|
|
(chip->settings.prox_thres_low) & 0xFF;
|
|
chip->tsl2772_config[TSL2772_PRX_MINTHRESHHI] =
|
|
(chip->settings.prox_thres_low >> 8) & 0xFF;
|
|
chip->tsl2772_config[TSL2772_PRX_MAXTHRESHLO] =
|
|
(chip->settings.prox_thres_high) & 0xFF;
|
|
chip->tsl2772_config[TSL2772_PRX_MAXTHRESHHI] =
|
|
(chip->settings.prox_thres_high >> 8) & 0xFF;
|
|
|
|
/* and make sure we're not already on */
|
|
if (chip->tsl2772_chip_status == TSL2772_CHIP_WORKING) {
|
|
/* if forcing a register update - turn off, then on */
|
|
dev_info(&chip->client->dev, "device is already enabled\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* Set the gain based on tsl2772_settings struct */
|
|
chip->tsl2772_config[TSL2772_GAIN] =
|
|
(chip->settings.als_gain & 0xFF) |
|
|
((chip->settings.prox_gain & 0xFF) << 2) |
|
|
(chip->settings.prox_diode << 4) |
|
|
(chip->settings.prox_power << 6);
|
|
|
|
/* set chip time scaling and saturation */
|
|
als_count = 256 - chip->settings.als_time;
|
|
als_time_us = als_count * tsl2772_int_time_avail[chip->id][3];
|
|
chip->als_saturation = als_count * 768; /* 75% of full scale */
|
|
chip->als_gain_time_scale = als_time_us *
|
|
tsl2772_als_gain[chip->settings.als_gain];
|
|
|
|
/*
|
|
* TSL2772 Specific power-on / adc enable sequence
|
|
* Power on the device 1st.
|
|
*/
|
|
ret = tsl2772_write_control_reg(chip, TSL2772_CNTL_PWR_ON);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/*
|
|
* Use the following shadow copy for our delay before enabling ADC.
|
|
* Write all the registers.
|
|
*/
|
|
for (i = 0, dev_reg = chip->tsl2772_config;
|
|
i < TSL2772_MAX_CONFIG_REG; i++) {
|
|
int reg = TSL2772_CMD_REG + i;
|
|
|
|
ret = i2c_smbus_write_byte_data(chip->client, reg,
|
|
*dev_reg++);
|
|
if (ret < 0) {
|
|
dev_err(&chip->client->dev,
|
|
"%s: failed to write to register %x: %d\n",
|
|
__func__, reg, ret);
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
/* Power-on settling time */
|
|
usleep_range(3000, 3500);
|
|
|
|
reg_val = TSL2772_CNTL_PWR_ON | TSL2772_CNTL_ADC_ENBL |
|
|
TSL2772_CNTL_PROX_DET_ENBL;
|
|
if (chip->settings.als_interrupt_en)
|
|
reg_val |= TSL2772_CNTL_ALS_INT_ENBL;
|
|
if (chip->settings.prox_interrupt_en)
|
|
reg_val |= TSL2772_CNTL_PROX_INT_ENBL;
|
|
|
|
ret = tsl2772_write_control_reg(chip, reg_val);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = i2c_smbus_write_byte(chip->client,
|
|
TSL2772_CMD_REG | TSL2772_CMD_SPL_FN |
|
|
TSL2772_CMD_PROXALS_INT_CLR);
|
|
if (ret < 0) {
|
|
dev_err(&chip->client->dev,
|
|
"%s: failed to clear interrupt status: %d\n",
|
|
__func__, ret);
|
|
return ret;
|
|
}
|
|
|
|
chip->tsl2772_chip_status = TSL2772_CHIP_WORKING;
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int tsl2772_chip_off(struct iio_dev *indio_dev)
|
|
{
|
|
struct tsl2772_chip *chip = iio_priv(indio_dev);
|
|
|
|
/* turn device off */
|
|
chip->tsl2772_chip_status = TSL2772_CHIP_SUSPENDED;
|
|
return tsl2772_write_control_reg(chip, 0x00);
|
|
}
|
|
|
|
static void tsl2772_chip_off_action(void *data)
|
|
{
|
|
struct iio_dev *indio_dev = data;
|
|
|
|
tsl2772_chip_off(indio_dev);
|
|
}
|
|
|
|
/**
|
|
* tsl2772_invoke_change - power cycle the device to implement the user
|
|
* parameters
|
|
* @indio_dev: pointer to IIO device
|
|
*
|
|
* Obtain and lock both ALS and PROX resources, determine and save device state
|
|
* (On/Off), cycle device to implement updated parameter, put device back into
|
|
* proper state, and unlock resource.
|
|
*/
|
|
static int tsl2772_invoke_change(struct iio_dev *indio_dev)
|
|
{
|
|
struct tsl2772_chip *chip = iio_priv(indio_dev);
|
|
int device_status = chip->tsl2772_chip_status;
|
|
int ret;
|
|
|
|
mutex_lock(&chip->als_mutex);
|
|
mutex_lock(&chip->prox_mutex);
|
|
|
|
if (device_status == TSL2772_CHIP_WORKING) {
|
|
ret = tsl2772_chip_off(indio_dev);
|
|
if (ret < 0)
|
|
goto unlock;
|
|
}
|
|
|
|
ret = tsl2772_chip_on(indio_dev);
|
|
|
|
unlock:
|
|
mutex_unlock(&chip->prox_mutex);
|
|
mutex_unlock(&chip->als_mutex);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int tsl2772_prox_cal(struct iio_dev *indio_dev)
|
|
{
|
|
struct tsl2772_chip *chip = iio_priv(indio_dev);
|
|
int prox_history[MAX_SAMPLES_CAL + 1];
|
|
int i, ret, mean, max, sample_sum;
|
|
|
|
if (chip->settings.prox_max_samples_cal < 1 ||
|
|
chip->settings.prox_max_samples_cal > MAX_SAMPLES_CAL)
|
|
return -EINVAL;
|
|
|
|
for (i = 0; i < chip->settings.prox_max_samples_cal; i++) {
|
|
usleep_range(15000, 17500);
|
|
ret = tsl2772_get_prox(indio_dev);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
prox_history[i] = chip->prox_data;
|
|
}
|
|
|
|
sample_sum = 0;
|
|
max = INT_MIN;
|
|
for (i = 0; i < chip->settings.prox_max_samples_cal; i++) {
|
|
sample_sum += prox_history[i];
|
|
max = max(max, prox_history[i]);
|
|
}
|
|
mean = sample_sum / chip->settings.prox_max_samples_cal;
|
|
|
|
chip->settings.prox_thres_high = (max << 1) - mean;
|
|
|
|
return tsl2772_invoke_change(indio_dev);
|
|
}
|
|
|
|
static int tsl2772_read_avail(struct iio_dev *indio_dev,
|
|
struct iio_chan_spec const *chan,
|
|
const int **vals, int *type, int *length,
|
|
long mask)
|
|
{
|
|
struct tsl2772_chip *chip = iio_priv(indio_dev);
|
|
|
|
switch (mask) {
|
|
case IIO_CHAN_INFO_CALIBSCALE:
|
|
if (chan->type == IIO_INTENSITY) {
|
|
*length = ARRAY_SIZE(tsl2772_int_calibscale_avail);
|
|
*vals = tsl2772_int_calibscale_avail;
|
|
} else {
|
|
*length = ARRAY_SIZE(tsl2772_prox_calibscale_avail);
|
|
*vals = tsl2772_prox_calibscale_avail;
|
|
}
|
|
*type = IIO_VAL_INT;
|
|
return IIO_AVAIL_LIST;
|
|
case IIO_CHAN_INFO_INT_TIME:
|
|
*length = ARRAY_SIZE(tsl2772_int_time_avail[chip->id]);
|
|
*vals = tsl2772_int_time_avail[chip->id];
|
|
*type = IIO_VAL_INT_PLUS_MICRO;
|
|
return IIO_AVAIL_RANGE;
|
|
}
|
|
|
|
return -EINVAL;
|
|
}
|
|
|
|
static ssize_t in_illuminance0_target_input_show(struct device *dev,
|
|
struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
struct tsl2772_chip *chip = iio_priv(dev_to_iio_dev(dev));
|
|
|
|
return scnprintf(buf, PAGE_SIZE, "%d\n", chip->settings.als_cal_target);
|
|
}
|
|
|
|
static ssize_t in_illuminance0_target_input_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t len)
|
|
{
|
|
struct iio_dev *indio_dev = dev_to_iio_dev(dev);
|
|
struct tsl2772_chip *chip = iio_priv(indio_dev);
|
|
u16 value;
|
|
int ret;
|
|
|
|
if (kstrtou16(buf, 0, &value))
|
|
return -EINVAL;
|
|
|
|
chip->settings.als_cal_target = value;
|
|
ret = tsl2772_invoke_change(indio_dev);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
return len;
|
|
}
|
|
|
|
static ssize_t in_illuminance0_calibrate_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t len)
|
|
{
|
|
struct iio_dev *indio_dev = dev_to_iio_dev(dev);
|
|
bool value;
|
|
int ret;
|
|
|
|
if (kstrtobool(buf, &value) || !value)
|
|
return -EINVAL;
|
|
|
|
ret = tsl2772_als_calibrate(indio_dev);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = tsl2772_invoke_change(indio_dev);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
return len;
|
|
}
|
|
|
|
static ssize_t in_illuminance0_lux_table_show(struct device *dev,
|
|
struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
struct tsl2772_chip *chip = iio_priv(dev_to_iio_dev(dev));
|
|
int i = 0;
|
|
int offset = 0;
|
|
|
|
while (i < TSL2772_MAX_LUX_TABLE_SIZE) {
|
|
offset += scnprintf(buf + offset, PAGE_SIZE - offset, "%u,%u,",
|
|
chip->tsl2772_device_lux[i].ch0,
|
|
chip->tsl2772_device_lux[i].ch1);
|
|
if (chip->tsl2772_device_lux[i].ch0 == 0) {
|
|
/*
|
|
* We just printed the first "0" entry.
|
|
* Now get rid of the extra "," and break.
|
|
*/
|
|
offset--;
|
|
break;
|
|
}
|
|
i++;
|
|
}
|
|
|
|
offset += scnprintf(buf + offset, PAGE_SIZE - offset, "\n");
|
|
return offset;
|
|
}
|
|
|
|
static ssize_t in_illuminance0_lux_table_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t len)
|
|
{
|
|
struct iio_dev *indio_dev = dev_to_iio_dev(dev);
|
|
struct tsl2772_chip *chip = iio_priv(indio_dev);
|
|
int value[ARRAY_SIZE(chip->tsl2772_device_lux) * 2 + 1];
|
|
int n, ret;
|
|
|
|
get_options(buf, ARRAY_SIZE(value), value);
|
|
|
|
/*
|
|
* We now have an array of ints starting at value[1], and
|
|
* enumerated by value[0].
|
|
* We expect each group of two ints to be one table entry,
|
|
* and the last table entry is all 0.
|
|
*/
|
|
n = value[0];
|
|
if ((n % 2) || n < 4 ||
|
|
n > ((ARRAY_SIZE(chip->tsl2772_device_lux) - 1) * 2))
|
|
return -EINVAL;
|
|
|
|
if ((value[(n - 1)] | value[n]) != 0)
|
|
return -EINVAL;
|
|
|
|
if (chip->tsl2772_chip_status == TSL2772_CHIP_WORKING) {
|
|
ret = tsl2772_chip_off(indio_dev);
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
|
|
/* Zero out the table */
|
|
memset(chip->tsl2772_device_lux, 0, sizeof(chip->tsl2772_device_lux));
|
|
memcpy(chip->tsl2772_device_lux, &value[1], (value[0] * 4));
|
|
|
|
ret = tsl2772_invoke_change(indio_dev);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
return len;
|
|
}
|
|
|
|
static ssize_t in_proximity0_calibrate_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t len)
|
|
{
|
|
struct iio_dev *indio_dev = dev_to_iio_dev(dev);
|
|
bool value;
|
|
int ret;
|
|
|
|
if (kstrtobool(buf, &value) || !value)
|
|
return -EINVAL;
|
|
|
|
ret = tsl2772_prox_cal(indio_dev);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = tsl2772_invoke_change(indio_dev);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
return len;
|
|
}
|
|
|
|
static int tsl2772_read_interrupt_config(struct iio_dev *indio_dev,
|
|
const struct iio_chan_spec *chan,
|
|
enum iio_event_type type,
|
|
enum iio_event_direction dir)
|
|
{
|
|
struct tsl2772_chip *chip = iio_priv(indio_dev);
|
|
|
|
if (chan->type == IIO_INTENSITY)
|
|
return chip->settings.als_interrupt_en;
|
|
else
|
|
return chip->settings.prox_interrupt_en;
|
|
}
|
|
|
|
static int tsl2772_write_interrupt_config(struct iio_dev *indio_dev,
|
|
const struct iio_chan_spec *chan,
|
|
enum iio_event_type type,
|
|
enum iio_event_direction dir,
|
|
int val)
|
|
{
|
|
struct tsl2772_chip *chip = iio_priv(indio_dev);
|
|
|
|
if (chan->type == IIO_INTENSITY)
|
|
chip->settings.als_interrupt_en = val ? true : false;
|
|
else
|
|
chip->settings.prox_interrupt_en = val ? true : false;
|
|
|
|
return tsl2772_invoke_change(indio_dev);
|
|
}
|
|
|
|
static int tsl2772_write_event_value(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)
|
|
{
|
|
struct tsl2772_chip *chip = iio_priv(indio_dev);
|
|
int ret = -EINVAL, count, persistence;
|
|
u8 time;
|
|
|
|
switch (info) {
|
|
case IIO_EV_INFO_VALUE:
|
|
if (chan->type == IIO_INTENSITY) {
|
|
switch (dir) {
|
|
case IIO_EV_DIR_RISING:
|
|
chip->settings.als_thresh_high = val;
|
|
ret = 0;
|
|
break;
|
|
case IIO_EV_DIR_FALLING:
|
|
chip->settings.als_thresh_low = val;
|
|
ret = 0;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
} else {
|
|
switch (dir) {
|
|
case IIO_EV_DIR_RISING:
|
|
chip->settings.prox_thres_high = val;
|
|
ret = 0;
|
|
break;
|
|
case IIO_EV_DIR_FALLING:
|
|
chip->settings.prox_thres_low = val;
|
|
ret = 0;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
break;
|
|
case IIO_EV_INFO_PERIOD:
|
|
if (chan->type == IIO_INTENSITY)
|
|
time = chip->settings.als_time;
|
|
else
|
|
time = chip->settings.prox_time;
|
|
|
|
count = 256 - time;
|
|
persistence = ((val * 1000000) + val2) /
|
|
(count * tsl2772_int_time_avail[chip->id][3]);
|
|
|
|
if (chan->type == IIO_INTENSITY) {
|
|
/* ALS filter values are 1, 2, 3, 5, 10, 15, ..., 60 */
|
|
if (persistence > 3)
|
|
persistence = (persistence / 5) + 3;
|
|
|
|
chip->settings.als_persistence = persistence;
|
|
} else {
|
|
chip->settings.prox_persistence = persistence;
|
|
}
|
|
|
|
ret = 0;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
return tsl2772_invoke_change(indio_dev);
|
|
}
|
|
|
|
static int tsl2772_read_event_value(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)
|
|
{
|
|
struct tsl2772_chip *chip = iio_priv(indio_dev);
|
|
int filter_delay, persistence;
|
|
u8 time;
|
|
|
|
switch (info) {
|
|
case IIO_EV_INFO_VALUE:
|
|
if (chan->type == IIO_INTENSITY) {
|
|
switch (dir) {
|
|
case IIO_EV_DIR_RISING:
|
|
*val = chip->settings.als_thresh_high;
|
|
return IIO_VAL_INT;
|
|
case IIO_EV_DIR_FALLING:
|
|
*val = chip->settings.als_thresh_low;
|
|
return IIO_VAL_INT;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
} else {
|
|
switch (dir) {
|
|
case IIO_EV_DIR_RISING:
|
|
*val = chip->settings.prox_thres_high;
|
|
return IIO_VAL_INT;
|
|
case IIO_EV_DIR_FALLING:
|
|
*val = chip->settings.prox_thres_low;
|
|
return IIO_VAL_INT;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
break;
|
|
case IIO_EV_INFO_PERIOD:
|
|
if (chan->type == IIO_INTENSITY) {
|
|
time = chip->settings.als_time;
|
|
persistence = chip->settings.als_persistence;
|
|
|
|
/* ALS filter values are 1, 2, 3, 5, 10, 15, ..., 60 */
|
|
if (persistence > 3)
|
|
persistence = (persistence - 3) * 5;
|
|
} else {
|
|
time = chip->settings.prox_time;
|
|
persistence = chip->settings.prox_persistence;
|
|
}
|
|
|
|
filter_delay = persistence * (256 - time) *
|
|
tsl2772_int_time_avail[chip->id][3];
|
|
|
|
*val = filter_delay / 1000000;
|
|
*val2 = filter_delay % 1000000;
|
|
return IIO_VAL_INT_PLUS_MICRO;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
|
|
static int tsl2772_read_raw(struct iio_dev *indio_dev,
|
|
struct iio_chan_spec const *chan,
|
|
int *val,
|
|
int *val2,
|
|
long mask)
|
|
{
|
|
struct tsl2772_chip *chip = iio_priv(indio_dev);
|
|
|
|
switch (mask) {
|
|
case IIO_CHAN_INFO_PROCESSED:
|
|
switch (chan->type) {
|
|
case IIO_LIGHT:
|
|
tsl2772_get_lux(indio_dev);
|
|
*val = chip->als_cur_info.lux;
|
|
return IIO_VAL_INT;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
case IIO_CHAN_INFO_RAW:
|
|
switch (chan->type) {
|
|
case IIO_INTENSITY:
|
|
tsl2772_get_lux(indio_dev);
|
|
if (chan->channel == 0)
|
|
*val = chip->als_cur_info.als_ch0;
|
|
else
|
|
*val = chip->als_cur_info.als_ch1;
|
|
return IIO_VAL_INT;
|
|
case IIO_PROXIMITY:
|
|
tsl2772_get_prox(indio_dev);
|
|
*val = chip->prox_data;
|
|
return IIO_VAL_INT;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
break;
|
|
case IIO_CHAN_INFO_CALIBSCALE:
|
|
if (chan->type == IIO_LIGHT)
|
|
*val = tsl2772_als_gain[chip->settings.als_gain];
|
|
else
|
|
*val = tsl2772_prox_gain[chip->settings.prox_gain];
|
|
return IIO_VAL_INT;
|
|
case IIO_CHAN_INFO_CALIBBIAS:
|
|
*val = chip->settings.als_gain_trim;
|
|
return IIO_VAL_INT;
|
|
case IIO_CHAN_INFO_INT_TIME:
|
|
*val = 0;
|
|
*val2 = (256 - chip->settings.als_time) *
|
|
tsl2772_int_time_avail[chip->id][3];
|
|
return IIO_VAL_INT_PLUS_MICRO;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
|
|
static int tsl2772_write_raw(struct iio_dev *indio_dev,
|
|
struct iio_chan_spec const *chan,
|
|
int val,
|
|
int val2,
|
|
long mask)
|
|
{
|
|
struct tsl2772_chip *chip = iio_priv(indio_dev);
|
|
|
|
switch (mask) {
|
|
case IIO_CHAN_INFO_CALIBSCALE:
|
|
if (chan->type == IIO_INTENSITY) {
|
|
switch (val) {
|
|
case 1:
|
|
chip->settings.als_gain = 0;
|
|
break;
|
|
case 8:
|
|
chip->settings.als_gain = 1;
|
|
break;
|
|
case 16:
|
|
chip->settings.als_gain = 2;
|
|
break;
|
|
case 120:
|
|
chip->settings.als_gain = 3;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
} else {
|
|
switch (val) {
|
|
case 1:
|
|
chip->settings.prox_gain = 0;
|
|
break;
|
|
case 2:
|
|
chip->settings.prox_gain = 1;
|
|
break;
|
|
case 4:
|
|
chip->settings.prox_gain = 2;
|
|
break;
|
|
case 8:
|
|
chip->settings.prox_gain = 3;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
break;
|
|
case IIO_CHAN_INFO_CALIBBIAS:
|
|
if (val < TSL2772_ALS_GAIN_TRIM_MIN ||
|
|
val > TSL2772_ALS_GAIN_TRIM_MAX)
|
|
return -EINVAL;
|
|
|
|
chip->settings.als_gain_trim = val;
|
|
break;
|
|
case IIO_CHAN_INFO_INT_TIME:
|
|
if (val != 0 || val2 < tsl2772_int_time_avail[chip->id][1] ||
|
|
val2 > tsl2772_int_time_avail[chip->id][5])
|
|
return -EINVAL;
|
|
|
|
chip->settings.als_time = 256 -
|
|
(val2 / tsl2772_int_time_avail[chip->id][3]);
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
return tsl2772_invoke_change(indio_dev);
|
|
}
|
|
|
|
static DEVICE_ATTR_RW(in_illuminance0_target_input);
|
|
|
|
static DEVICE_ATTR_WO(in_illuminance0_calibrate);
|
|
|
|
static DEVICE_ATTR_WO(in_proximity0_calibrate);
|
|
|
|
static DEVICE_ATTR_RW(in_illuminance0_lux_table);
|
|
|
|
/* Use the default register values to identify the Taos device */
|
|
static int tsl2772_device_id_verif(int id, int target)
|
|
{
|
|
switch (target) {
|
|
case tsl2571:
|
|
case tsl2671:
|
|
case tsl2771:
|
|
return (id & 0xf0) == TRITON_ID;
|
|
case tmd2671:
|
|
case tmd2771:
|
|
return (id & 0xf0) == HALIBUT_ID;
|
|
case tsl2572:
|
|
case tsl2672:
|
|
case tmd2672:
|
|
case tsl2772:
|
|
case tmd2772:
|
|
case apds9930:
|
|
return (id & 0xf0) == SWORDFISH_ID;
|
|
}
|
|
|
|
return -EINVAL;
|
|
}
|
|
|
|
static irqreturn_t tsl2772_event_handler(int irq, void *private)
|
|
{
|
|
struct iio_dev *indio_dev = private;
|
|
struct tsl2772_chip *chip = iio_priv(indio_dev);
|
|
s64 timestamp = iio_get_time_ns(indio_dev);
|
|
int ret;
|
|
|
|
ret = tsl2772_read_status(chip);
|
|
if (ret < 0)
|
|
return IRQ_HANDLED;
|
|
|
|
/* What type of interrupt do we need to process */
|
|
if (ret & TSL2772_STA_PRX_INTR) {
|
|
iio_push_event(indio_dev,
|
|
IIO_UNMOD_EVENT_CODE(IIO_PROXIMITY,
|
|
0,
|
|
IIO_EV_TYPE_THRESH,
|
|
IIO_EV_DIR_EITHER),
|
|
timestamp);
|
|
}
|
|
|
|
if (ret & TSL2772_STA_ALS_INTR) {
|
|
iio_push_event(indio_dev,
|
|
IIO_UNMOD_EVENT_CODE(IIO_LIGHT,
|
|
0,
|
|
IIO_EV_TYPE_THRESH,
|
|
IIO_EV_DIR_EITHER),
|
|
timestamp);
|
|
}
|
|
|
|
ret = i2c_smbus_write_byte(chip->client,
|
|
TSL2772_CMD_REG | TSL2772_CMD_SPL_FN |
|
|
TSL2772_CMD_PROXALS_INT_CLR);
|
|
if (ret < 0)
|
|
dev_err(&chip->client->dev,
|
|
"%s: failed to clear interrupt status: %d\n",
|
|
__func__, ret);
|
|
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
static struct attribute *tsl2772_ALS_device_attrs[] = {
|
|
&dev_attr_in_illuminance0_target_input.attr,
|
|
&dev_attr_in_illuminance0_calibrate.attr,
|
|
&dev_attr_in_illuminance0_lux_table.attr,
|
|
NULL
|
|
};
|
|
|
|
static struct attribute *tsl2772_PRX_device_attrs[] = {
|
|
&dev_attr_in_proximity0_calibrate.attr,
|
|
NULL
|
|
};
|
|
|
|
static struct attribute *tsl2772_ALSPRX_device_attrs[] = {
|
|
&dev_attr_in_illuminance0_target_input.attr,
|
|
&dev_attr_in_illuminance0_calibrate.attr,
|
|
&dev_attr_in_illuminance0_lux_table.attr,
|
|
NULL
|
|
};
|
|
|
|
static struct attribute *tsl2772_PRX2_device_attrs[] = {
|
|
&dev_attr_in_proximity0_calibrate.attr,
|
|
NULL
|
|
};
|
|
|
|
static struct attribute *tsl2772_ALSPRX2_device_attrs[] = {
|
|
&dev_attr_in_illuminance0_target_input.attr,
|
|
&dev_attr_in_illuminance0_calibrate.attr,
|
|
&dev_attr_in_illuminance0_lux_table.attr,
|
|
&dev_attr_in_proximity0_calibrate.attr,
|
|
NULL
|
|
};
|
|
|
|
static const struct attribute_group tsl2772_device_attr_group_tbl[] = {
|
|
[ALS] = {
|
|
.attrs = tsl2772_ALS_device_attrs,
|
|
},
|
|
[PRX] = {
|
|
.attrs = tsl2772_PRX_device_attrs,
|
|
},
|
|
[ALSPRX] = {
|
|
.attrs = tsl2772_ALSPRX_device_attrs,
|
|
},
|
|
[PRX2] = {
|
|
.attrs = tsl2772_PRX2_device_attrs,
|
|
},
|
|
[ALSPRX2] = {
|
|
.attrs = tsl2772_ALSPRX2_device_attrs,
|
|
},
|
|
};
|
|
|
|
#define TSL2772_DEVICE_INFO(type)[type] = \
|
|
{ \
|
|
.attrs = &tsl2772_device_attr_group_tbl[type], \
|
|
.read_raw = &tsl2772_read_raw, \
|
|
.read_avail = &tsl2772_read_avail, \
|
|
.write_raw = &tsl2772_write_raw, \
|
|
.read_event_value = &tsl2772_read_event_value, \
|
|
.write_event_value = &tsl2772_write_event_value, \
|
|
.read_event_config = &tsl2772_read_interrupt_config, \
|
|
.write_event_config = &tsl2772_write_interrupt_config, \
|
|
}
|
|
|
|
static const struct iio_info tsl2772_device_info[] = {
|
|
TSL2772_DEVICE_INFO(ALS),
|
|
TSL2772_DEVICE_INFO(PRX),
|
|
TSL2772_DEVICE_INFO(ALSPRX),
|
|
TSL2772_DEVICE_INFO(PRX2),
|
|
TSL2772_DEVICE_INFO(ALSPRX2),
|
|
};
|
|
|
|
static const struct iio_event_spec tsl2772_events[] = {
|
|
{
|
|
.type = IIO_EV_TYPE_THRESH,
|
|
.dir = IIO_EV_DIR_RISING,
|
|
.mask_separate = BIT(IIO_EV_INFO_VALUE),
|
|
}, {
|
|
.type = IIO_EV_TYPE_THRESH,
|
|
.dir = IIO_EV_DIR_FALLING,
|
|
.mask_separate = BIT(IIO_EV_INFO_VALUE),
|
|
}, {
|
|
.type = IIO_EV_TYPE_THRESH,
|
|
.dir = IIO_EV_DIR_EITHER,
|
|
.mask_separate = BIT(IIO_EV_INFO_PERIOD) |
|
|
BIT(IIO_EV_INFO_ENABLE),
|
|
},
|
|
};
|
|
|
|
static const struct tsl2772_chip_info tsl2772_chip_info_tbl[] = {
|
|
[ALS] = {
|
|
.channel_with_events = {
|
|
{
|
|
.type = IIO_LIGHT,
|
|
.indexed = 1,
|
|
.channel = 0,
|
|
.info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED),
|
|
}, {
|
|
.type = IIO_INTENSITY,
|
|
.indexed = 1,
|
|
.channel = 0,
|
|
.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
|
|
BIT(IIO_CHAN_INFO_INT_TIME) |
|
|
BIT(IIO_CHAN_INFO_CALIBSCALE) |
|
|
BIT(IIO_CHAN_INFO_CALIBBIAS),
|
|
.info_mask_separate_available =
|
|
BIT(IIO_CHAN_INFO_INT_TIME) |
|
|
BIT(IIO_CHAN_INFO_CALIBSCALE),
|
|
.event_spec = tsl2772_events,
|
|
.num_event_specs = ARRAY_SIZE(tsl2772_events),
|
|
}, {
|
|
.type = IIO_INTENSITY,
|
|
.indexed = 1,
|
|
.channel = 1,
|
|
},
|
|
},
|
|
.channel_without_events = {
|
|
{
|
|
.type = IIO_LIGHT,
|
|
.indexed = 1,
|
|
.channel = 0,
|
|
.info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED),
|
|
}, {
|
|
.type = IIO_INTENSITY,
|
|
.indexed = 1,
|
|
.channel = 0,
|
|
.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
|
|
BIT(IIO_CHAN_INFO_INT_TIME) |
|
|
BIT(IIO_CHAN_INFO_CALIBSCALE) |
|
|
BIT(IIO_CHAN_INFO_CALIBBIAS),
|
|
.info_mask_separate_available =
|
|
BIT(IIO_CHAN_INFO_INT_TIME) |
|
|
BIT(IIO_CHAN_INFO_CALIBSCALE),
|
|
}, {
|
|
.type = IIO_INTENSITY,
|
|
.indexed = 1,
|
|
.channel = 1,
|
|
},
|
|
},
|
|
.chan_table_elements = 3,
|
|
.info = &tsl2772_device_info[ALS],
|
|
},
|
|
[PRX] = {
|
|
.channel_with_events = {
|
|
{
|
|
.type = IIO_PROXIMITY,
|
|
.indexed = 1,
|
|
.channel = 0,
|
|
.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
|
|
.event_spec = tsl2772_events,
|
|
.num_event_specs = ARRAY_SIZE(tsl2772_events),
|
|
},
|
|
},
|
|
.channel_without_events = {
|
|
{
|
|
.type = IIO_PROXIMITY,
|
|
.indexed = 1,
|
|
.channel = 0,
|
|
.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
|
|
},
|
|
},
|
|
.chan_table_elements = 1,
|
|
.info = &tsl2772_device_info[PRX],
|
|
},
|
|
[ALSPRX] = {
|
|
.channel_with_events = {
|
|
{
|
|
.type = IIO_LIGHT,
|
|
.indexed = 1,
|
|
.channel = 0,
|
|
.info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED),
|
|
}, {
|
|
.type = IIO_INTENSITY,
|
|
.indexed = 1,
|
|
.channel = 0,
|
|
.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
|
|
BIT(IIO_CHAN_INFO_INT_TIME) |
|
|
BIT(IIO_CHAN_INFO_CALIBSCALE) |
|
|
BIT(IIO_CHAN_INFO_CALIBBIAS),
|
|
.info_mask_separate_available =
|
|
BIT(IIO_CHAN_INFO_INT_TIME) |
|
|
BIT(IIO_CHAN_INFO_CALIBSCALE),
|
|
.event_spec = tsl2772_events,
|
|
.num_event_specs = ARRAY_SIZE(tsl2772_events),
|
|
}, {
|
|
.type = IIO_INTENSITY,
|
|
.indexed = 1,
|
|
.channel = 1,
|
|
.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
|
|
}, {
|
|
.type = IIO_PROXIMITY,
|
|
.indexed = 1,
|
|
.channel = 0,
|
|
.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
|
|
.event_spec = tsl2772_events,
|
|
.num_event_specs = ARRAY_SIZE(tsl2772_events),
|
|
},
|
|
},
|
|
.channel_without_events = {
|
|
{
|
|
.type = IIO_LIGHT,
|
|
.indexed = 1,
|
|
.channel = 0,
|
|
.info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED),
|
|
}, {
|
|
.type = IIO_INTENSITY,
|
|
.indexed = 1,
|
|
.channel = 0,
|
|
.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
|
|
BIT(IIO_CHAN_INFO_INT_TIME) |
|
|
BIT(IIO_CHAN_INFO_CALIBSCALE) |
|
|
BIT(IIO_CHAN_INFO_CALIBBIAS),
|
|
.info_mask_separate_available =
|
|
BIT(IIO_CHAN_INFO_INT_TIME) |
|
|
BIT(IIO_CHAN_INFO_CALIBSCALE),
|
|
}, {
|
|
.type = IIO_INTENSITY,
|
|
.indexed = 1,
|
|
.channel = 1,
|
|
.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
|
|
}, {
|
|
.type = IIO_PROXIMITY,
|
|
.indexed = 1,
|
|
.channel = 0,
|
|
.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
|
|
},
|
|
},
|
|
.chan_table_elements = 4,
|
|
.info = &tsl2772_device_info[ALSPRX],
|
|
},
|
|
[PRX2] = {
|
|
.channel_with_events = {
|
|
{
|
|
.type = IIO_PROXIMITY,
|
|
.indexed = 1,
|
|
.channel = 0,
|
|
.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
|
|
BIT(IIO_CHAN_INFO_CALIBSCALE),
|
|
.info_mask_separate_available =
|
|
BIT(IIO_CHAN_INFO_CALIBSCALE),
|
|
.event_spec = tsl2772_events,
|
|
.num_event_specs = ARRAY_SIZE(tsl2772_events),
|
|
},
|
|
},
|
|
.channel_without_events = {
|
|
{
|
|
.type = IIO_PROXIMITY,
|
|
.indexed = 1,
|
|
.channel = 0,
|
|
.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
|
|
BIT(IIO_CHAN_INFO_CALIBSCALE),
|
|
.info_mask_separate_available =
|
|
BIT(IIO_CHAN_INFO_CALIBSCALE),
|
|
},
|
|
},
|
|
.chan_table_elements = 1,
|
|
.info = &tsl2772_device_info[PRX2],
|
|
},
|
|
[ALSPRX2] = {
|
|
.channel_with_events = {
|
|
{
|
|
.type = IIO_LIGHT,
|
|
.indexed = 1,
|
|
.channel = 0,
|
|
.info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED),
|
|
}, {
|
|
.type = IIO_INTENSITY,
|
|
.indexed = 1,
|
|
.channel = 0,
|
|
.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
|
|
BIT(IIO_CHAN_INFO_INT_TIME) |
|
|
BIT(IIO_CHAN_INFO_CALIBSCALE) |
|
|
BIT(IIO_CHAN_INFO_CALIBBIAS),
|
|
.info_mask_separate_available =
|
|
BIT(IIO_CHAN_INFO_INT_TIME) |
|
|
BIT(IIO_CHAN_INFO_CALIBSCALE),
|
|
.event_spec = tsl2772_events,
|
|
.num_event_specs = ARRAY_SIZE(tsl2772_events),
|
|
}, {
|
|
.type = IIO_INTENSITY,
|
|
.indexed = 1,
|
|
.channel = 1,
|
|
.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
|
|
}, {
|
|
.type = IIO_PROXIMITY,
|
|
.indexed = 1,
|
|
.channel = 0,
|
|
.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
|
|
BIT(IIO_CHAN_INFO_CALIBSCALE),
|
|
.info_mask_separate_available =
|
|
BIT(IIO_CHAN_INFO_CALIBSCALE),
|
|
.event_spec = tsl2772_events,
|
|
.num_event_specs = ARRAY_SIZE(tsl2772_events),
|
|
},
|
|
},
|
|
.channel_without_events = {
|
|
{
|
|
.type = IIO_LIGHT,
|
|
.indexed = 1,
|
|
.channel = 0,
|
|
.info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED),
|
|
}, {
|
|
.type = IIO_INTENSITY,
|
|
.indexed = 1,
|
|
.channel = 0,
|
|
.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
|
|
BIT(IIO_CHAN_INFO_INT_TIME) |
|
|
BIT(IIO_CHAN_INFO_CALIBSCALE) |
|
|
BIT(IIO_CHAN_INFO_CALIBBIAS),
|
|
.info_mask_separate_available =
|
|
BIT(IIO_CHAN_INFO_INT_TIME) |
|
|
BIT(IIO_CHAN_INFO_CALIBSCALE),
|
|
}, {
|
|
.type = IIO_INTENSITY,
|
|
.indexed = 1,
|
|
.channel = 1,
|
|
.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
|
|
}, {
|
|
.type = IIO_PROXIMITY,
|
|
.indexed = 1,
|
|
.channel = 0,
|
|
.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
|
|
BIT(IIO_CHAN_INFO_CALIBSCALE),
|
|
.info_mask_separate_available =
|
|
BIT(IIO_CHAN_INFO_CALIBSCALE),
|
|
},
|
|
},
|
|
.chan_table_elements = 4,
|
|
.info = &tsl2772_device_info[ALSPRX2],
|
|
},
|
|
};
|
|
|
|
static int tsl2772_probe(struct i2c_client *clientp,
|
|
const struct i2c_device_id *id)
|
|
{
|
|
struct iio_dev *indio_dev;
|
|
struct tsl2772_chip *chip;
|
|
int ret;
|
|
|
|
indio_dev = devm_iio_device_alloc(&clientp->dev, sizeof(*chip));
|
|
if (!indio_dev)
|
|
return -ENOMEM;
|
|
|
|
chip = iio_priv(indio_dev);
|
|
chip->client = clientp;
|
|
i2c_set_clientdata(clientp, indio_dev);
|
|
|
|
chip->supplies[TSL2772_SUPPLY_VDD].supply = "vdd";
|
|
chip->supplies[TSL2772_SUPPLY_VDDIO].supply = "vddio";
|
|
|
|
ret = devm_regulator_bulk_get(&clientp->dev,
|
|
ARRAY_SIZE(chip->supplies),
|
|
chip->supplies);
|
|
if (ret < 0)
|
|
return dev_err_probe(&clientp->dev, ret, "Failed to get regulators\n");
|
|
|
|
ret = regulator_bulk_enable(ARRAY_SIZE(chip->supplies), chip->supplies);
|
|
if (ret < 0) {
|
|
dev_err(&clientp->dev, "Failed to enable regulators: %d\n",
|
|
ret);
|
|
return ret;
|
|
}
|
|
|
|
ret = devm_add_action_or_reset(&clientp->dev,
|
|
tsl2772_disable_regulators_action,
|
|
chip);
|
|
if (ret < 0) {
|
|
dev_err(&clientp->dev, "Failed to setup regulator cleanup action %d\n",
|
|
ret);
|
|
return ret;
|
|
}
|
|
|
|
usleep_range(TSL2772_BOOT_MIN_SLEEP_TIME, TSL2772_BOOT_MAX_SLEEP_TIME);
|
|
|
|
ret = i2c_smbus_read_byte_data(chip->client,
|
|
TSL2772_CMD_REG | TSL2772_CHIPID);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
if (tsl2772_device_id_verif(ret, id->driver_data) <= 0) {
|
|
dev_info(&chip->client->dev,
|
|
"%s: i2c device found does not match expected id\n",
|
|
__func__);
|
|
return -EINVAL;
|
|
}
|
|
|
|
ret = i2c_smbus_write_byte(clientp, TSL2772_CMD_REG | TSL2772_CNTRL);
|
|
if (ret < 0) {
|
|
dev_err(&clientp->dev,
|
|
"%s: Failed to write to CMD register: %d\n",
|
|
__func__, ret);
|
|
return ret;
|
|
}
|
|
|
|
mutex_init(&chip->als_mutex);
|
|
mutex_init(&chip->prox_mutex);
|
|
|
|
chip->tsl2772_chip_status = TSL2772_CHIP_UNKNOWN;
|
|
chip->pdata = dev_get_platdata(&clientp->dev);
|
|
chip->id = id->driver_data;
|
|
chip->chip_info =
|
|
&tsl2772_chip_info_tbl[device_channel_config[id->driver_data]];
|
|
|
|
indio_dev->info = chip->chip_info->info;
|
|
indio_dev->modes = INDIO_DIRECT_MODE;
|
|
indio_dev->name = chip->client->name;
|
|
indio_dev->num_channels = chip->chip_info->chan_table_elements;
|
|
|
|
if (clientp->irq) {
|
|
indio_dev->channels = chip->chip_info->channel_with_events;
|
|
|
|
ret = devm_request_threaded_irq(&clientp->dev, clientp->irq,
|
|
NULL,
|
|
&tsl2772_event_handler,
|
|
IRQF_TRIGGER_FALLING |
|
|
IRQF_ONESHOT,
|
|
"TSL2772_event",
|
|
indio_dev);
|
|
if (ret) {
|
|
dev_err(&clientp->dev,
|
|
"%s: irq request failed\n", __func__);
|
|
return ret;
|
|
}
|
|
} else {
|
|
indio_dev->channels = chip->chip_info->channel_without_events;
|
|
}
|
|
|
|
tsl2772_defaults(chip);
|
|
ret = tsl2772_chip_on(indio_dev);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = devm_add_action_or_reset(&clientp->dev,
|
|
tsl2772_chip_off_action,
|
|
indio_dev);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
return devm_iio_device_register(&clientp->dev, indio_dev);
|
|
}
|
|
|
|
static int tsl2772_suspend(struct device *dev)
|
|
{
|
|
struct iio_dev *indio_dev = dev_get_drvdata(dev);
|
|
struct tsl2772_chip *chip = iio_priv(indio_dev);
|
|
int ret;
|
|
|
|
ret = tsl2772_chip_off(indio_dev);
|
|
regulator_bulk_disable(ARRAY_SIZE(chip->supplies), chip->supplies);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int tsl2772_resume(struct device *dev)
|
|
{
|
|
struct iio_dev *indio_dev = dev_get_drvdata(dev);
|
|
struct tsl2772_chip *chip = iio_priv(indio_dev);
|
|
int ret;
|
|
|
|
ret = regulator_bulk_enable(ARRAY_SIZE(chip->supplies), chip->supplies);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
usleep_range(TSL2772_BOOT_MIN_SLEEP_TIME, TSL2772_BOOT_MAX_SLEEP_TIME);
|
|
|
|
return tsl2772_chip_on(indio_dev);
|
|
}
|
|
|
|
static const struct i2c_device_id tsl2772_idtable[] = {
|
|
{ "tsl2571", tsl2571 },
|
|
{ "tsl2671", tsl2671 },
|
|
{ "tmd2671", tmd2671 },
|
|
{ "tsl2771", tsl2771 },
|
|
{ "tmd2771", tmd2771 },
|
|
{ "tsl2572", tsl2572 },
|
|
{ "tsl2672", tsl2672 },
|
|
{ "tmd2672", tmd2672 },
|
|
{ "tsl2772", tsl2772 },
|
|
{ "tmd2772", tmd2772 },
|
|
{ "apds9930", apds9930},
|
|
{}
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(i2c, tsl2772_idtable);
|
|
|
|
static const struct of_device_id tsl2772_of_match[] = {
|
|
{ .compatible = "amstaos,tsl2571" },
|
|
{ .compatible = "amstaos,tsl2671" },
|
|
{ .compatible = "amstaos,tmd2671" },
|
|
{ .compatible = "amstaos,tsl2771" },
|
|
{ .compatible = "amstaos,tmd2771" },
|
|
{ .compatible = "amstaos,tsl2572" },
|
|
{ .compatible = "amstaos,tsl2672" },
|
|
{ .compatible = "amstaos,tmd2672" },
|
|
{ .compatible = "amstaos,tsl2772" },
|
|
{ .compatible = "amstaos,tmd2772" },
|
|
{ .compatible = "avago,apds9930" },
|
|
{}
|
|
};
|
|
MODULE_DEVICE_TABLE(of, tsl2772_of_match);
|
|
|
|
static const struct dev_pm_ops tsl2772_pm_ops = {
|
|
.suspend = tsl2772_suspend,
|
|
.resume = tsl2772_resume,
|
|
};
|
|
|
|
static struct i2c_driver tsl2772_driver = {
|
|
.driver = {
|
|
.name = "tsl2772",
|
|
.of_match_table = tsl2772_of_match,
|
|
.pm = &tsl2772_pm_ops,
|
|
},
|
|
.id_table = tsl2772_idtable,
|
|
.probe = tsl2772_probe,
|
|
};
|
|
|
|
module_i2c_driver(tsl2772_driver);
|
|
|
|
MODULE_AUTHOR("J. August Brenner <Jon.Brenner@ams.com>");
|
|
MODULE_AUTHOR("Brian Masney <masneyb@onstation.org>");
|
|
MODULE_DESCRIPTION("TAOS tsl2772 ambient and proximity light sensor driver");
|
|
MODULE_LICENSE("GPL");
|