^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * This file is part of the ROHM BH1770GLC / OSRAM SFH7770 sensor driver.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * Chip is combined proximity and ambient light sensor.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * Contact: Samu Onkalo <samu.p.onkalo@nokia.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/i2c.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/interrupt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/mutex.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/platform_data/bh1770glc.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/regulator/consumer.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/pm_runtime.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/workqueue.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/delay.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <linux/wait.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #define BH1770_ALS_CONTROL 0x80 /* ALS operation mode control */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #define BH1770_PS_CONTROL 0x81 /* PS operation mode control */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #define BH1770_I_LED 0x82 /* active LED and LED1, LED2 current */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #define BH1770_I_LED3 0x83 /* LED3 current setting */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #define BH1770_ALS_PS_MEAS 0x84 /* Forced mode trigger */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #define BH1770_PS_MEAS_RATE 0x85 /* PS meas. rate at stand alone mode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #define BH1770_ALS_MEAS_RATE 0x86 /* ALS meas. rate at stand alone mode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #define BH1770_PART_ID 0x8a /* Part number and revision ID */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #define BH1770_MANUFACT_ID 0x8b /* Manufacturerer ID */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #define BH1770_ALS_DATA_0 0x8c /* ALS DATA low byte */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) #define BH1770_ALS_DATA_1 0x8d /* ALS DATA high byte */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #define BH1770_ALS_PS_STATUS 0x8e /* Measurement data and int status */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) #define BH1770_PS_DATA_LED1 0x8f /* PS data from LED1 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) #define BH1770_PS_DATA_LED2 0x90 /* PS data from LED2 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) #define BH1770_PS_DATA_LED3 0x91 /* PS data from LED3 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) #define BH1770_INTERRUPT 0x92 /* Interrupt setting */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) #define BH1770_PS_TH_LED1 0x93 /* PS interrupt threshold for LED1 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) #define BH1770_PS_TH_LED2 0x94 /* PS interrupt threshold for LED2 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) #define BH1770_PS_TH_LED3 0x95 /* PS interrupt threshold for LED3 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) #define BH1770_ALS_TH_UP_0 0x96 /* ALS upper threshold low byte */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) #define BH1770_ALS_TH_UP_1 0x97 /* ALS upper threshold high byte */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) #define BH1770_ALS_TH_LOW_0 0x98 /* ALS lower threshold low byte */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) #define BH1770_ALS_TH_LOW_1 0x99 /* ALS lower threshold high byte */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) /* MANUFACT_ID */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) #define BH1770_MANUFACT_ROHM 0x01
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) #define BH1770_MANUFACT_OSRAM 0x03
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) /* PART_ID */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) #define BH1770_PART 0x90
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) #define BH1770_PART_MASK 0xf0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) #define BH1770_REV_MASK 0x0f
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) #define BH1770_REV_SHIFT 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) #define BH1770_REV_0 0x00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) #define BH1770_REV_1 0x01
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) /* Operating modes for both */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) #define BH1770_STANDBY 0x00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) #define BH1770_FORCED 0x02
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) #define BH1770_STANDALONE 0x03
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) #define BH1770_SWRESET (0x01 << 2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) #define BH1770_PS_TRIG_MEAS (1 << 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) #define BH1770_ALS_TRIG_MEAS (1 << 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) /* Interrupt control */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) #define BH1770_INT_OUTPUT_MODE (1 << 3) /* 0 = latched */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) #define BH1770_INT_POLARITY (1 << 2) /* 1 = active high */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) #define BH1770_INT_ALS_ENA (1 << 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) #define BH1770_INT_PS_ENA (1 << 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) /* Interrupt status */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) #define BH1770_INT_LED1_DATA (1 << 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) #define BH1770_INT_LED1_INT (1 << 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) #define BH1770_INT_LED2_DATA (1 << 2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) #define BH1770_INT_LED2_INT (1 << 3)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) #define BH1770_INT_LED3_DATA (1 << 4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) #define BH1770_INT_LED3_INT (1 << 5)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) #define BH1770_INT_LEDS_INT ((1 << 1) | (1 << 3) | (1 << 5))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) #define BH1770_INT_ALS_DATA (1 << 6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) #define BH1770_INT_ALS_INT (1 << 7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) /* Led channels */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) #define BH1770_LED1 0x00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) #define BH1770_DISABLE 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) #define BH1770_ENABLE 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) #define BH1770_PROX_CHANNELS 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) #define BH1770_LUX_DEFAULT_RATE 1 /* Index to lux rate table */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) #define BH1770_PROX_DEFAULT_RATE 1 /* Direct HW value =~ 50Hz */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) #define BH1770_PROX_DEF_RATE_THRESH 6 /* Direct HW value =~ 5 Hz */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) #define BH1770_STARTUP_DELAY 50
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) #define BH1770_RESET_TIME 10
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) #define BH1770_TIMEOUT 2100 /* Timeout in 2.1 seconds */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) #define BH1770_LUX_RANGE 65535
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) #define BH1770_PROX_RANGE 255
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) #define BH1770_COEF_SCALER 1024
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) #define BH1770_CALIB_SCALER 8192
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) #define BH1770_LUX_NEUTRAL_CALIB_VALUE (1 * BH1770_CALIB_SCALER)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) #define BH1770_LUX_DEF_THRES 1000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) #define BH1770_PROX_DEF_THRES 70
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) #define BH1770_PROX_DEF_ABS_THRES 100
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) #define BH1770_DEFAULT_PERSISTENCE 10
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) #define BH1770_PROX_MAX_PERSISTENCE 50
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) #define BH1770_LUX_GA_SCALE 16384
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) #define BH1770_LUX_CF_SCALE 2048 /* CF ChipFactor */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) #define BH1770_NEUTRAL_CF BH1770_LUX_CF_SCALE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) #define BH1770_LUX_CORR_SCALE 4096
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) #define PROX_ABOVE_THRESHOLD 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) #define PROX_BELOW_THRESHOLD 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) #define PROX_IGNORE_LUX_LIMIT 500
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) struct bh1770_chip {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) struct bh1770_platform_data *pdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) char chipname[10];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) u8 revision;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) struct i2c_client *client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) struct regulator_bulk_data regs[2];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) struct mutex mutex; /* avoid parallel access */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) wait_queue_head_t wait;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) bool int_mode_prox;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) bool int_mode_lux;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) struct delayed_work prox_work;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) u32 lux_cf; /* Chip specific factor */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) u32 lux_ga;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) u32 lux_calib;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) int lux_rate_index;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) u32 lux_corr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) u16 lux_data_raw;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) u16 lux_threshold_hi;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) u16 lux_threshold_lo;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) u16 lux_thres_hi_onchip;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) u16 lux_thres_lo_onchip;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) bool lux_wait_result;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) int prox_enable_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) u16 prox_coef;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) u16 prox_const;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) int prox_rate;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) int prox_rate_threshold;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) u8 prox_persistence;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) u8 prox_persistence_counter;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) u8 prox_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) u8 prox_threshold;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) u8 prox_threshold_hw;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) bool prox_force_update;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) u8 prox_abs_thres;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) u8 prox_led;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) static const char reg_vcc[] = "Vcc";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) static const char reg_vleds[] = "Vleds";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) * Supported stand alone rates in ms from chip data sheet
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) * {10, 20, 30, 40, 70, 100, 200, 500, 1000, 2000};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) static const s16 prox_rates_hz[] = {100, 50, 33, 25, 14, 10, 5, 2};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) static const s16 prox_rates_ms[] = {10, 20, 30, 40, 70, 100, 200, 500};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) * Supported stand alone rates in ms from chip data sheet
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) * {100, 200, 500, 1000, 2000};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) static const s16 lux_rates_hz[] = {10, 5, 2, 1, 0};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) * interrupt control functions are called while keeping chip->mutex
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) * excluding module probe / remove
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) static inline int bh1770_lux_interrupt_control(struct bh1770_chip *chip,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) int lux)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) chip->int_mode_lux = lux;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) /* Set interrupt modes, interrupt active low, latched */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) return i2c_smbus_write_byte_data(chip->client,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) BH1770_INTERRUPT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) (lux << 1) | chip->int_mode_prox);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) static inline int bh1770_prox_interrupt_control(struct bh1770_chip *chip,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) int ps)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) chip->int_mode_prox = ps;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) return i2c_smbus_write_byte_data(chip->client,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) BH1770_INTERRUPT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) (chip->int_mode_lux << 1) | (ps << 0));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) /* chip->mutex is always kept here */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) static int bh1770_lux_rate(struct bh1770_chip *chip, int rate_index)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) /* sysfs may call this when the chip is powered off */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) if (pm_runtime_suspended(&chip->client->dev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) /* Proper proximity response needs fastest lux rate (100ms) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) if (chip->prox_enable_count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) rate_index = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) return i2c_smbus_write_byte_data(chip->client,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) BH1770_ALS_MEAS_RATE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) rate_index);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) static int bh1770_prox_rate(struct bh1770_chip *chip, int mode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) int rate;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) rate = (mode == PROX_ABOVE_THRESHOLD) ?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) chip->prox_rate_threshold : chip->prox_rate;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) return i2c_smbus_write_byte_data(chip->client,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) BH1770_PS_MEAS_RATE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) rate);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) /* InfraredLED is controlled by the chip during proximity scanning */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) static inline int bh1770_led_cfg(struct bh1770_chip *chip)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) /* LED cfg, current for leds 1 and 2 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) return i2c_smbus_write_byte_data(chip->client,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) BH1770_I_LED,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) (BH1770_LED1 << 6) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) (BH1770_LED_5mA << 3) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) chip->prox_led);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) * Following two functions converts raw ps values from HW to normalized
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) * values. Purpose is to compensate differences between different sensor
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) * versions and variants so that result means about the same between
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) * versions.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) static inline u8 bh1770_psraw_to_adjusted(struct bh1770_chip *chip, u8 psraw)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) u16 adjusted;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) adjusted = (u16)(((u32)(psraw + chip->prox_const) * chip->prox_coef) /
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) BH1770_COEF_SCALER);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) if (adjusted > BH1770_PROX_RANGE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) adjusted = BH1770_PROX_RANGE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) return adjusted;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) static inline u8 bh1770_psadjusted_to_raw(struct bh1770_chip *chip, u8 ps)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) u16 raw;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) raw = (((u32)ps * BH1770_COEF_SCALER) / chip->prox_coef);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) if (raw > chip->prox_const)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) raw = raw - chip->prox_const;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) raw = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) return raw;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) * Following two functions converts raw lux values from HW to normalized
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) * values. Purpose is to compensate differences between different sensor
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) * versions and variants so that result means about the same between
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) * versions. Chip->mutex is kept when this is called.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) static int bh1770_prox_set_threshold(struct bh1770_chip *chip)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) u8 tmp = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) /* sysfs may call this when the chip is powered off */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) if (pm_runtime_suspended(&chip->client->dev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) tmp = bh1770_psadjusted_to_raw(chip, chip->prox_threshold);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) chip->prox_threshold_hw = tmp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) return i2c_smbus_write_byte_data(chip->client, BH1770_PS_TH_LED1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) tmp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) static inline u16 bh1770_lux_raw_to_adjusted(struct bh1770_chip *chip, u16 raw)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) u32 lux;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) lux = ((u32)raw * chip->lux_corr) / BH1770_LUX_CORR_SCALE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) return min(lux, (u32)BH1770_LUX_RANGE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) static inline u16 bh1770_lux_adjusted_to_raw(struct bh1770_chip *chip,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) u16 adjusted)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) return (u32)adjusted * BH1770_LUX_CORR_SCALE / chip->lux_corr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) /* chip->mutex is kept when this is called */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) static int bh1770_lux_update_thresholds(struct bh1770_chip *chip,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) u16 threshold_hi, u16 threshold_lo)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) u8 data[4];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) /* sysfs may call this when the chip is powered off */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) if (pm_runtime_suspended(&chip->client->dev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) * Compensate threshold values with the correction factors if not
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) * set to minimum or maximum.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) * Min & max values disables interrupts.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) if (threshold_hi != BH1770_LUX_RANGE && threshold_hi != 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) threshold_hi = bh1770_lux_adjusted_to_raw(chip, threshold_hi);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) if (threshold_lo != BH1770_LUX_RANGE && threshold_lo != 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) threshold_lo = bh1770_lux_adjusted_to_raw(chip, threshold_lo);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) if (chip->lux_thres_hi_onchip == threshold_hi &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) chip->lux_thres_lo_onchip == threshold_lo)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) chip->lux_thres_hi_onchip = threshold_hi;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) chip->lux_thres_lo_onchip = threshold_lo;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) data[0] = threshold_hi;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) data[1] = threshold_hi >> 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) data[2] = threshold_lo;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) data[3] = threshold_lo >> 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) ret = i2c_smbus_write_i2c_block_data(chip->client,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) BH1770_ALS_TH_UP_0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) ARRAY_SIZE(data),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) static int bh1770_lux_get_result(struct bh1770_chip *chip)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) u16 data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) ret = i2c_smbus_read_byte_data(chip->client, BH1770_ALS_DATA_0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) data = ret & 0xff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) ret = i2c_smbus_read_byte_data(chip->client, BH1770_ALS_DATA_1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) chip->lux_data_raw = data | ((ret & 0xff) << 8);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) /* Calculate correction value which contains chip and device specific parts */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) static u32 bh1770_get_corr_value(struct bh1770_chip *chip)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) u32 tmp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) /* Impact of glass attenuation correction */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) tmp = (BH1770_LUX_CORR_SCALE * chip->lux_ga) / BH1770_LUX_GA_SCALE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) /* Impact of chip factor correction */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) tmp = (tmp * chip->lux_cf) / BH1770_LUX_CF_SCALE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) /* Impact of Device specific calibration correction */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) tmp = (tmp * chip->lux_calib) / BH1770_CALIB_SCALER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) return tmp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) static int bh1770_lux_read_result(struct bh1770_chip *chip)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) bh1770_lux_get_result(chip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) return bh1770_lux_raw_to_adjusted(chip, chip->lux_data_raw);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) * Chip on / off functions are called while keeping mutex except probe
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) * or remove phase
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) static int bh1770_chip_on(struct bh1770_chip *chip)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) int ret = regulator_bulk_enable(ARRAY_SIZE(chip->regs),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) chip->regs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) usleep_range(BH1770_STARTUP_DELAY, BH1770_STARTUP_DELAY * 2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) /* Reset the chip */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) i2c_smbus_write_byte_data(chip->client, BH1770_ALS_CONTROL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) BH1770_SWRESET);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) usleep_range(BH1770_RESET_TIME, BH1770_RESET_TIME * 2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) * ALS is started always since proximity needs als results
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) * for realibility estimation.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) * Let's assume dark until the first ALS measurement is ready.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) chip->lux_data_raw = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) chip->prox_data = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) ret = i2c_smbus_write_byte_data(chip->client,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) BH1770_ALS_CONTROL, BH1770_STANDALONE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) /* Assume reset defaults */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) chip->lux_thres_hi_onchip = BH1770_LUX_RANGE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) chip->lux_thres_lo_onchip = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) static void bh1770_chip_off(struct bh1770_chip *chip)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) i2c_smbus_write_byte_data(chip->client,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) BH1770_INTERRUPT, BH1770_DISABLE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) i2c_smbus_write_byte_data(chip->client,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) BH1770_ALS_CONTROL, BH1770_STANDBY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) i2c_smbus_write_byte_data(chip->client,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) BH1770_PS_CONTROL, BH1770_STANDBY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) regulator_bulk_disable(ARRAY_SIZE(chip->regs), chip->regs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) /* chip->mutex is kept when this is called */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) static int bh1770_prox_mode_control(struct bh1770_chip *chip)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) if (chip->prox_enable_count) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) chip->prox_force_update = true; /* Force immediate update */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) bh1770_lux_rate(chip, chip->lux_rate_index);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) bh1770_prox_set_threshold(chip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) bh1770_led_cfg(chip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) bh1770_prox_rate(chip, PROX_BELOW_THRESHOLD);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) bh1770_prox_interrupt_control(chip, BH1770_ENABLE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) i2c_smbus_write_byte_data(chip->client,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) BH1770_PS_CONTROL, BH1770_STANDALONE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) chip->prox_data = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) bh1770_lux_rate(chip, chip->lux_rate_index);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) bh1770_prox_interrupt_control(chip, BH1770_DISABLE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) i2c_smbus_write_byte_data(chip->client,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) BH1770_PS_CONTROL, BH1770_STANDBY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) /* chip->mutex is kept when this is called */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) static int bh1770_prox_read_result(struct bh1770_chip *chip)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) bool above;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) u8 mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) ret = i2c_smbus_read_byte_data(chip->client, BH1770_PS_DATA_LED1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) if (ret > chip->prox_threshold_hw)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) above = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) above = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) * when ALS levels goes above limit, proximity result may be
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) * false proximity. Thus ignore the result. With real proximity
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) * there is a shadow causing low als levels.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) if (chip->lux_data_raw > PROX_IGNORE_LUX_LIMIT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) chip->prox_data = bh1770_psraw_to_adjusted(chip, ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) /* Strong proximity level or force mode requires immediate response */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) if (chip->prox_data >= chip->prox_abs_thres ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) chip->prox_force_update)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) chip->prox_persistence_counter = chip->prox_persistence;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) chip->prox_force_update = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) /* Persistence filttering to reduce false proximity events */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) if (likely(above)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) if (chip->prox_persistence_counter < chip->prox_persistence) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) chip->prox_persistence_counter++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) ret = -ENODATA;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) mode = PROX_ABOVE_THRESHOLD;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) chip->prox_persistence_counter = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) mode = PROX_BELOW_THRESHOLD;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) chip->prox_data = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) /* Set proximity detection rate based on above or below value */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) if (ret == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) bh1770_prox_rate(chip, mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) sysfs_notify(&chip->client->dev.kobj, NULL, "prox0_raw");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) static int bh1770_detect(struct bh1770_chip *chip)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) struct i2c_client *client = chip->client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) s32 ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) u8 manu, part;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) ret = i2c_smbus_read_byte_data(client, BH1770_MANUFACT_ID);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) goto error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) manu = (u8)ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) ret = i2c_smbus_read_byte_data(client, BH1770_PART_ID);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) goto error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) part = (u8)ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) chip->revision = (part & BH1770_REV_MASK) >> BH1770_REV_SHIFT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) chip->prox_coef = BH1770_COEF_SCALER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) chip->prox_const = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) chip->lux_cf = BH1770_NEUTRAL_CF;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) if ((manu == BH1770_MANUFACT_ROHM) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) ((part & BH1770_PART_MASK) == BH1770_PART)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) snprintf(chip->chipname, sizeof(chip->chipname), "BH1770GLC");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) if ((manu == BH1770_MANUFACT_OSRAM) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) ((part & BH1770_PART_MASK) == BH1770_PART)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) snprintf(chip->chipname, sizeof(chip->chipname), "SFH7770");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) /* Values selected by comparing different versions */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) chip->prox_coef = 819; /* 0.8 * BH1770_COEF_SCALER */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) chip->prox_const = 40;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) ret = -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) error:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) dev_dbg(&client->dev, "BH1770 or SFH7770 not found\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) * This work is re-scheduled at every proximity interrupt.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) * If this work is running, it means that there hasn't been any
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) * proximity interrupt in time. Situation is handled as no-proximity.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) * It would be nice to have low-threshold interrupt or interrupt
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) * when measurement and hi-threshold are both 0. But neither of those exists.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) * This is a workaroud for missing HW feature.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) static void bh1770_prox_work(struct work_struct *work)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) struct bh1770_chip *chip =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) container_of(work, struct bh1770_chip, prox_work.work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) mutex_lock(&chip->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) bh1770_prox_read_result(chip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) mutex_unlock(&chip->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) /* This is threaded irq handler */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) static irqreturn_t bh1770_irq(int irq, void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) struct bh1770_chip *chip = data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) int status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) int rate = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) mutex_lock(&chip->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) status = i2c_smbus_read_byte_data(chip->client, BH1770_ALS_PS_STATUS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) /* Acknowledge interrupt by reading this register */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) i2c_smbus_read_byte_data(chip->client, BH1770_INTERRUPT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) * Check if there is fresh data available for als.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) * If this is the very first data, update thresholds after that.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) if (status & BH1770_INT_ALS_DATA) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) bh1770_lux_get_result(chip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) if (unlikely(chip->lux_wait_result)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) chip->lux_wait_result = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) wake_up(&chip->wait);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) bh1770_lux_update_thresholds(chip,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) chip->lux_threshold_hi,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) chip->lux_threshold_lo);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) /* Disable interrupt logic to guarantee acknowledgement */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) i2c_smbus_write_byte_data(chip->client, BH1770_INTERRUPT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) (0 << 1) | (0 << 0));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) if ((status & BH1770_INT_ALS_INT))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) sysfs_notify(&chip->client->dev.kobj, NULL, "lux0_input");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) if (chip->int_mode_prox && (status & BH1770_INT_LEDS_INT)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) rate = prox_rates_ms[chip->prox_rate_threshold];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) bh1770_prox_read_result(chip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) /* Re-enable interrupt logic */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) i2c_smbus_write_byte_data(chip->client, BH1770_INTERRUPT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) (chip->int_mode_lux << 1) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) (chip->int_mode_prox << 0));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) mutex_unlock(&chip->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) * Can't cancel work while keeping mutex since the work uses the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) * same mutex.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) if (rate) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) * Simulate missing no-proximity interrupt 50ms after the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) * next expected interrupt time.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622) cancel_delayed_work_sync(&chip->prox_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) schedule_delayed_work(&chip->prox_work,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) msecs_to_jiffies(rate + 50));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626) return IRQ_HANDLED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) static ssize_t bh1770_power_state_store(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631) const char *buf, size_t count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) struct bh1770_chip *chip = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) unsigned long value;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635) ssize_t ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637) ret = kstrtoul(buf, 0, &value);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641) mutex_lock(&chip->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) if (value) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) pm_runtime_get_sync(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) ret = bh1770_lux_rate(chip, chip->lux_rate_index);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646) if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) pm_runtime_put(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648) goto leave;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) ret = bh1770_lux_interrupt_control(chip, BH1770_ENABLE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652) if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653) pm_runtime_put(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) goto leave;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657) /* This causes interrupt after the next measurement cycle */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658) bh1770_lux_update_thresholds(chip, BH1770_LUX_DEF_THRES,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) BH1770_LUX_DEF_THRES);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660) /* Inform that we are waiting for a result from ALS */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661) chip->lux_wait_result = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662) bh1770_prox_mode_control(chip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663) } else if (!pm_runtime_suspended(dev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664) pm_runtime_put(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) ret = count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667) leave:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668) mutex_unlock(&chip->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672) static ssize_t bh1770_power_state_show(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673) struct device_attribute *attr, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675) return sprintf(buf, "%d\n", !pm_runtime_suspended(dev));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678) static ssize_t bh1770_lux_result_show(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679) struct device_attribute *attr, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681) struct bh1770_chip *chip = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682) ssize_t ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683) long timeout;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685) if (pm_runtime_suspended(dev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686) return -EIO; /* Chip is not enabled at all */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688) timeout = wait_event_interruptible_timeout(chip->wait,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689) !chip->lux_wait_result,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690) msecs_to_jiffies(BH1770_TIMEOUT));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691) if (!timeout)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694) mutex_lock(&chip->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695) ret = sprintf(buf, "%d\n", bh1770_lux_read_result(chip));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696) mutex_unlock(&chip->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701) static ssize_t bh1770_lux_range_show(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702) struct device_attribute *attr, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704) return sprintf(buf, "%d\n", BH1770_LUX_RANGE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 706)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 707) static ssize_t bh1770_prox_enable_store(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 708) struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 709) const char *buf, size_t count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 710) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 711) struct bh1770_chip *chip = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 712) unsigned long value;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 713) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 714)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 715) ret = kstrtoul(buf, 0, &value);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 716) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 717) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 718)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 719) mutex_lock(&chip->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 720) /* Assume no proximity. Sensor will tell real state soon */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 721) if (!chip->prox_enable_count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 722) chip->prox_data = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 723)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 724) if (value)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 725) chip->prox_enable_count++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 726) else if (chip->prox_enable_count > 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 727) chip->prox_enable_count--;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 728) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 729) goto leave;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 730)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 731) /* Run control only when chip is powered on */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 732) if (!pm_runtime_suspended(dev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 733) bh1770_prox_mode_control(chip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 734) leave:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 735) mutex_unlock(&chip->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 736) return count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 737) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 738)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 739) static ssize_t bh1770_prox_enable_show(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 740) struct device_attribute *attr, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 741) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 742) struct bh1770_chip *chip = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 743) ssize_t len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 744)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 745) mutex_lock(&chip->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 746) len = sprintf(buf, "%d\n", chip->prox_enable_count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 747) mutex_unlock(&chip->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 748) return len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 749) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 750)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 751) static ssize_t bh1770_prox_result_show(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 752) struct device_attribute *attr, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 753) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 754) struct bh1770_chip *chip = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 755) ssize_t ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 756)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 757) mutex_lock(&chip->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 758) if (chip->prox_enable_count && !pm_runtime_suspended(dev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 759) ret = sprintf(buf, "%d\n", chip->prox_data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 760) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 761) ret = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 762) mutex_unlock(&chip->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 763) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 764) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 765)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 766) static ssize_t bh1770_prox_range_show(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 767) struct device_attribute *attr, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 768) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 769) return sprintf(buf, "%d\n", BH1770_PROX_RANGE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 770) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 771)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 772) static ssize_t bh1770_get_prox_rate_avail(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 773) struct device_attribute *attr, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 774) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 775) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 776) int pos = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 777) for (i = 0; i < ARRAY_SIZE(prox_rates_hz); i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 778) pos += sprintf(buf + pos, "%d ", prox_rates_hz[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 779) sprintf(buf + pos - 1, "\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 780) return pos;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 781) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 782)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 783) static ssize_t bh1770_get_prox_rate_above(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 784) struct device_attribute *attr, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 785) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 786) struct bh1770_chip *chip = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 787) return sprintf(buf, "%d\n", prox_rates_hz[chip->prox_rate_threshold]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 788) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 789)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 790) static ssize_t bh1770_get_prox_rate_below(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 791) struct device_attribute *attr, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 792) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 793) struct bh1770_chip *chip = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 794) return sprintf(buf, "%d\n", prox_rates_hz[chip->prox_rate]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 795) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 796)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 797) static int bh1770_prox_rate_validate(int rate)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 798) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 799) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 800)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 801) for (i = 0; i < ARRAY_SIZE(prox_rates_hz) - 1; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 802) if (rate >= prox_rates_hz[i])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 803) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 804) return i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 805) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 806)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 807) static ssize_t bh1770_set_prox_rate_above(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 808) struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 809) const char *buf, size_t count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 810) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 811) struct bh1770_chip *chip = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 812) unsigned long value;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 813) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 814)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 815) ret = kstrtoul(buf, 0, &value);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 816) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 817) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 818)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 819) mutex_lock(&chip->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 820) chip->prox_rate_threshold = bh1770_prox_rate_validate(value);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 821) mutex_unlock(&chip->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 822) return count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 823) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 824)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 825) static ssize_t bh1770_set_prox_rate_below(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 826) struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 827) const char *buf, size_t count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 828) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 829) struct bh1770_chip *chip = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 830) unsigned long value;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 831) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 832)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 833) ret = kstrtoul(buf, 0, &value);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 834) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 835) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 836)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 837) mutex_lock(&chip->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 838) chip->prox_rate = bh1770_prox_rate_validate(value);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 839) mutex_unlock(&chip->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 840) return count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 841) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 842)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 843) static ssize_t bh1770_get_prox_thres(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 844) struct device_attribute *attr, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 845) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 846) struct bh1770_chip *chip = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 847) return sprintf(buf, "%d\n", chip->prox_threshold);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 848) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 849)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 850) static ssize_t bh1770_set_prox_thres(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 851) struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 852) const char *buf, size_t count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 853) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 854) struct bh1770_chip *chip = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 855) unsigned long value;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 856) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 857)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 858) ret = kstrtoul(buf, 0, &value);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 859) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 860) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 861)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 862) if (value > BH1770_PROX_RANGE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 863) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 864)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 865) mutex_lock(&chip->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 866) chip->prox_threshold = value;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 867) ret = bh1770_prox_set_threshold(chip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 868) mutex_unlock(&chip->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 869) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 870) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 871) return count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 872) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 873)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 874) static ssize_t bh1770_prox_persistence_show(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 875) struct device_attribute *attr, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 876) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 877) struct bh1770_chip *chip = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 878)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 879) return sprintf(buf, "%u\n", chip->prox_persistence);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 880) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 881)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 882) static ssize_t bh1770_prox_persistence_store(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 883) struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 884) const char *buf, size_t len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 885) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 886) struct bh1770_chip *chip = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 887) unsigned long value;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 888) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 889)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 890) ret = kstrtoul(buf, 0, &value);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 891) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 892) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 893)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 894) if (value > BH1770_PROX_MAX_PERSISTENCE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 895) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 896)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 897) chip->prox_persistence = value;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 898)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 899) return len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 900) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 901)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 902) static ssize_t bh1770_prox_abs_thres_show(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 903) struct device_attribute *attr, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 904) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 905) struct bh1770_chip *chip = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 906) return sprintf(buf, "%u\n", chip->prox_abs_thres);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 907) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 908)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 909) static ssize_t bh1770_prox_abs_thres_store(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 910) struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 911) const char *buf, size_t len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 912) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 913) struct bh1770_chip *chip = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 914) unsigned long value;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 915) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 916)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 917) ret = kstrtoul(buf, 0, &value);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 918) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 919) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 920)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 921) if (value > BH1770_PROX_RANGE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 922) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 923)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 924) chip->prox_abs_thres = value;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 925)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 926) return len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 927) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 928)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 929) static ssize_t bh1770_chip_id_show(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 930) struct device_attribute *attr, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 931) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 932) struct bh1770_chip *chip = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 933) return sprintf(buf, "%s rev %d\n", chip->chipname, chip->revision);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 934) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 935)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 936) static ssize_t bh1770_lux_calib_default_show(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 937) struct device_attribute *attr, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 938) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 939) return sprintf(buf, "%u\n", BH1770_CALIB_SCALER);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 940) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 941)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 942) static ssize_t bh1770_lux_calib_show(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 943) struct device_attribute *attr, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 944) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 945) struct bh1770_chip *chip = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 946) ssize_t len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 947)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 948) mutex_lock(&chip->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 949) len = sprintf(buf, "%u\n", chip->lux_calib);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 950) mutex_unlock(&chip->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 951) return len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 952) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 953)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 954) static ssize_t bh1770_lux_calib_store(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 955) struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 956) const char *buf, size_t len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 957) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 958) struct bh1770_chip *chip = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 959) unsigned long value;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 960) u32 old_calib;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 961) u32 new_corr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 962) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 963)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 964) ret = kstrtoul(buf, 0, &value);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 965) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 966) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 967)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 968) mutex_lock(&chip->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 969) old_calib = chip->lux_calib;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 970) chip->lux_calib = value;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 971) new_corr = bh1770_get_corr_value(chip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 972) if (new_corr == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 973) chip->lux_calib = old_calib;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 974) mutex_unlock(&chip->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 975) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 976) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 977) chip->lux_corr = new_corr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 978) /* Refresh thresholds on HW after changing correction value */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 979) bh1770_lux_update_thresholds(chip, chip->lux_threshold_hi,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 980) chip->lux_threshold_lo);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 981)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 982) mutex_unlock(&chip->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 983)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 984) return len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 985) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 986)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 987) static ssize_t bh1770_get_lux_rate_avail(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 988) struct device_attribute *attr, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 989) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 990) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 991) int pos = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 992) for (i = 0; i < ARRAY_SIZE(lux_rates_hz); i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 993) pos += sprintf(buf + pos, "%d ", lux_rates_hz[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 994) sprintf(buf + pos - 1, "\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 995) return pos;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 996) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 997)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 998) static ssize_t bh1770_get_lux_rate(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 999) struct device_attribute *attr, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1000) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1001) struct bh1770_chip *chip = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1002) return sprintf(buf, "%d\n", lux_rates_hz[chip->lux_rate_index]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1003) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1004)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1005) static ssize_t bh1770_set_lux_rate(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1006) struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1007) const char *buf, size_t count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1008) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1009) struct bh1770_chip *chip = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1010) unsigned long rate_hz;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1011) int ret, i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1012)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1013) ret = kstrtoul(buf, 0, &rate_hz);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1014) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1015) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1016)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1017) for (i = 0; i < ARRAY_SIZE(lux_rates_hz) - 1; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1018) if (rate_hz >= lux_rates_hz[i])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1019) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1020)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1021) mutex_lock(&chip->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1022) chip->lux_rate_index = i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1023) ret = bh1770_lux_rate(chip, i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1024) mutex_unlock(&chip->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1025)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1026) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1027) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1028)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1029) return count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1030) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1031)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1032) static ssize_t bh1770_get_lux_thresh_above(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1033) struct device_attribute *attr, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1034) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1035) struct bh1770_chip *chip = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1036) return sprintf(buf, "%d\n", chip->lux_threshold_hi);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1037) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1038)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1039) static ssize_t bh1770_get_lux_thresh_below(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1040) struct device_attribute *attr, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1041) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1042) struct bh1770_chip *chip = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1043) return sprintf(buf, "%d\n", chip->lux_threshold_lo);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1044) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1045)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1046) static ssize_t bh1770_set_lux_thresh(struct bh1770_chip *chip, u16 *target,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1047) const char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1048) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1049) unsigned long thresh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1050) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1051)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1052) ret = kstrtoul(buf, 0, &thresh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1053) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1054) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1055)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1056) if (thresh > BH1770_LUX_RANGE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1057) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1058)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1059) mutex_lock(&chip->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1060) *target = thresh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1061) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1062) * Don't update values in HW if we are still waiting for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1063) * first interrupt to come after device handle open call.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1064) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1065) if (!chip->lux_wait_result)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1066) ret = bh1770_lux_update_thresholds(chip,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1067) chip->lux_threshold_hi,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1068) chip->lux_threshold_lo);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1069) mutex_unlock(&chip->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1070) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1071)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1072) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1073)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1074) static ssize_t bh1770_set_lux_thresh_above(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1075) struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1076) const char *buf, size_t len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1077) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1078) struct bh1770_chip *chip = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1079) int ret = bh1770_set_lux_thresh(chip, &chip->lux_threshold_hi, buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1080) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1081) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1082) return len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1083) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1084)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1085) static ssize_t bh1770_set_lux_thresh_below(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1086) struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1087) const char *buf, size_t len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1088) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1089) struct bh1770_chip *chip = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1090) int ret = bh1770_set_lux_thresh(chip, &chip->lux_threshold_lo, buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1091) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1092) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1093) return len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1094) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1095)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1096) static DEVICE_ATTR(prox0_raw_en, S_IRUGO | S_IWUSR, bh1770_prox_enable_show,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1097) bh1770_prox_enable_store);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1098) static DEVICE_ATTR(prox0_thresh_above1_value, S_IRUGO | S_IWUSR,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1099) bh1770_prox_abs_thres_show,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1100) bh1770_prox_abs_thres_store);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1101) static DEVICE_ATTR(prox0_thresh_above0_value, S_IRUGO | S_IWUSR,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1102) bh1770_get_prox_thres,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1103) bh1770_set_prox_thres);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1104) static DEVICE_ATTR(prox0_raw, S_IRUGO, bh1770_prox_result_show, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1105) static DEVICE_ATTR(prox0_sensor_range, S_IRUGO, bh1770_prox_range_show, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1106) static DEVICE_ATTR(prox0_thresh_above_count, S_IRUGO | S_IWUSR,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1107) bh1770_prox_persistence_show,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1108) bh1770_prox_persistence_store);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1109) static DEVICE_ATTR(prox0_rate_above, S_IRUGO | S_IWUSR,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1110) bh1770_get_prox_rate_above,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1111) bh1770_set_prox_rate_above);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1112) static DEVICE_ATTR(prox0_rate_below, S_IRUGO | S_IWUSR,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1113) bh1770_get_prox_rate_below,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1114) bh1770_set_prox_rate_below);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1115) static DEVICE_ATTR(prox0_rate_avail, S_IRUGO, bh1770_get_prox_rate_avail, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1116)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1117) static DEVICE_ATTR(lux0_calibscale, S_IRUGO | S_IWUSR, bh1770_lux_calib_show,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1118) bh1770_lux_calib_store);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1119) static DEVICE_ATTR(lux0_calibscale_default, S_IRUGO,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1120) bh1770_lux_calib_default_show,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1121) NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1122) static DEVICE_ATTR(lux0_input, S_IRUGO, bh1770_lux_result_show, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1123) static DEVICE_ATTR(lux0_sensor_range, S_IRUGO, bh1770_lux_range_show, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1124) static DEVICE_ATTR(lux0_rate, S_IRUGO | S_IWUSR, bh1770_get_lux_rate,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1125) bh1770_set_lux_rate);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1126) static DEVICE_ATTR(lux0_rate_avail, S_IRUGO, bh1770_get_lux_rate_avail, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1127) static DEVICE_ATTR(lux0_thresh_above_value, S_IRUGO | S_IWUSR,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1128) bh1770_get_lux_thresh_above,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1129) bh1770_set_lux_thresh_above);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1130) static DEVICE_ATTR(lux0_thresh_below_value, S_IRUGO | S_IWUSR,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1131) bh1770_get_lux_thresh_below,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1132) bh1770_set_lux_thresh_below);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1133) static DEVICE_ATTR(chip_id, S_IRUGO, bh1770_chip_id_show, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1134) static DEVICE_ATTR(power_state, S_IRUGO | S_IWUSR, bh1770_power_state_show,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1135) bh1770_power_state_store);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1136)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1137)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1138) static struct attribute *sysfs_attrs[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1139) &dev_attr_lux0_calibscale.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1140) &dev_attr_lux0_calibscale_default.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1141) &dev_attr_lux0_input.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1142) &dev_attr_lux0_sensor_range.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1143) &dev_attr_lux0_rate.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1144) &dev_attr_lux0_rate_avail.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1145) &dev_attr_lux0_thresh_above_value.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1146) &dev_attr_lux0_thresh_below_value.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1147) &dev_attr_prox0_raw.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1148) &dev_attr_prox0_sensor_range.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1149) &dev_attr_prox0_raw_en.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1150) &dev_attr_prox0_thresh_above_count.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1151) &dev_attr_prox0_rate_above.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1152) &dev_attr_prox0_rate_below.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1153) &dev_attr_prox0_rate_avail.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1154) &dev_attr_prox0_thresh_above0_value.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1155) &dev_attr_prox0_thresh_above1_value.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1156) &dev_attr_chip_id.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1157) &dev_attr_power_state.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1158) NULL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1159) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1160)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1161) static const struct attribute_group bh1770_attribute_group = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1162) .attrs = sysfs_attrs
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1163) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1164)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1165) static int bh1770_probe(struct i2c_client *client,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1166) const struct i2c_device_id *id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1167) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1168) struct bh1770_chip *chip;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1169) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1170)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1171) chip = devm_kzalloc(&client->dev, sizeof *chip, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1172) if (!chip)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1173) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1174)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1175) i2c_set_clientdata(client, chip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1176) chip->client = client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1177)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1178) mutex_init(&chip->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1179) init_waitqueue_head(&chip->wait);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1180) INIT_DELAYED_WORK(&chip->prox_work, bh1770_prox_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1181)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1182) if (client->dev.platform_data == NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1183) dev_err(&client->dev, "platform data is mandatory\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1184) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1185) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1186)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1187) chip->pdata = client->dev.platform_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1188) chip->lux_calib = BH1770_LUX_NEUTRAL_CALIB_VALUE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1189) chip->lux_rate_index = BH1770_LUX_DEFAULT_RATE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1190) chip->lux_threshold_lo = BH1770_LUX_DEF_THRES;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1191) chip->lux_threshold_hi = BH1770_LUX_DEF_THRES;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1192)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1193) if (chip->pdata->glass_attenuation == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1194) chip->lux_ga = BH1770_NEUTRAL_GA;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1195) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1196) chip->lux_ga = chip->pdata->glass_attenuation;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1197)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1198) chip->prox_threshold = BH1770_PROX_DEF_THRES;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1199) chip->prox_led = chip->pdata->led_def_curr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1200) chip->prox_abs_thres = BH1770_PROX_DEF_ABS_THRES;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1201) chip->prox_persistence = BH1770_DEFAULT_PERSISTENCE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1202) chip->prox_rate_threshold = BH1770_PROX_DEF_RATE_THRESH;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1203) chip->prox_rate = BH1770_PROX_DEFAULT_RATE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1204) chip->prox_data = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1205)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1206) chip->regs[0].supply = reg_vcc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1207) chip->regs[1].supply = reg_vleds;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1208)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1209) err = devm_regulator_bulk_get(&client->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1210) ARRAY_SIZE(chip->regs), chip->regs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1211) if (err < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1212) dev_err(&client->dev, "Cannot get regulators\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1213) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1214) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1215)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1216) err = regulator_bulk_enable(ARRAY_SIZE(chip->regs),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1217) chip->regs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1218) if (err < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1219) dev_err(&client->dev, "Cannot enable regulators\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1220) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1221) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1222)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1223) usleep_range(BH1770_STARTUP_DELAY, BH1770_STARTUP_DELAY * 2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1224) err = bh1770_detect(chip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1225) if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1226) goto fail0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1227)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1228) /* Start chip */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1229) bh1770_chip_on(chip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1230) pm_runtime_set_active(&client->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1231) pm_runtime_enable(&client->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1232)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1233) chip->lux_corr = bh1770_get_corr_value(chip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1234) if (chip->lux_corr == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1235) dev_err(&client->dev, "Improper correction values\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1236) err = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1237) goto fail0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1238) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1239)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1240) if (chip->pdata->setup_resources) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1241) err = chip->pdata->setup_resources();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1242) if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1243) err = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1244) goto fail0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1245) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1246) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1247)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1248) err = sysfs_create_group(&chip->client->dev.kobj,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1249) &bh1770_attribute_group);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1250) if (err < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1251) dev_err(&chip->client->dev, "Sysfs registration failed\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1252) goto fail1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1253) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1254)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1255) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1256) * Chip needs level triggered interrupt to work. However,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1257) * level triggering doesn't work always correctly with power
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1258) * management. Select both
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1259) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1260) err = request_threaded_irq(client->irq, NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1261) bh1770_irq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1262) IRQF_TRIGGER_FALLING | IRQF_ONESHOT |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1263) IRQF_TRIGGER_LOW,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1264) "bh1770", chip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1265) if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1266) dev_err(&client->dev, "could not get IRQ %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1267) client->irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1268) goto fail2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1269) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1270) regulator_bulk_disable(ARRAY_SIZE(chip->regs), chip->regs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1271) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1272) fail2:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1273) sysfs_remove_group(&chip->client->dev.kobj,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1274) &bh1770_attribute_group);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1275) fail1:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1276) if (chip->pdata->release_resources)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1277) chip->pdata->release_resources();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1278) fail0:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1279) regulator_bulk_disable(ARRAY_SIZE(chip->regs), chip->regs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1280) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1281) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1282)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1283) static int bh1770_remove(struct i2c_client *client)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1284) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1285) struct bh1770_chip *chip = i2c_get_clientdata(client);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1286)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1287) free_irq(client->irq, chip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1288)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1289) sysfs_remove_group(&chip->client->dev.kobj,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1290) &bh1770_attribute_group);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1291)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1292) if (chip->pdata->release_resources)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1293) chip->pdata->release_resources();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1294)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1295) cancel_delayed_work_sync(&chip->prox_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1296)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1297) if (!pm_runtime_suspended(&client->dev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1298) bh1770_chip_off(chip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1299)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1300) pm_runtime_disable(&client->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1301) pm_runtime_set_suspended(&client->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1302)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1303) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1304) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1305)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1306) #ifdef CONFIG_PM_SLEEP
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1307) static int bh1770_suspend(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1308) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1309) struct i2c_client *client = to_i2c_client(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1310) struct bh1770_chip *chip = i2c_get_clientdata(client);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1311)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1312) bh1770_chip_off(chip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1313)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1314) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1315) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1316)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1317) static int bh1770_resume(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1318) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1319) struct i2c_client *client = to_i2c_client(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1320) struct bh1770_chip *chip = i2c_get_clientdata(client);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1321) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1322)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1323) bh1770_chip_on(chip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1324)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1325) if (!pm_runtime_suspended(dev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1326) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1327) * If we were enabled at suspend time, it is expected
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1328) * everything works nice and smoothly
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1329) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1330) ret = bh1770_lux_rate(chip, chip->lux_rate_index);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1331) ret |= bh1770_lux_interrupt_control(chip, BH1770_ENABLE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1332)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1333) /* This causes interrupt after the next measurement cycle */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1334) bh1770_lux_update_thresholds(chip, BH1770_LUX_DEF_THRES,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1335) BH1770_LUX_DEF_THRES);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1336) /* Inform that we are waiting for a result from ALS */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1337) chip->lux_wait_result = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1338) bh1770_prox_mode_control(chip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1339) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1340) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1341) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1342) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1343)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1344) #ifdef CONFIG_PM
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1345) static int bh1770_runtime_suspend(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1346) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1347) struct i2c_client *client = to_i2c_client(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1348) struct bh1770_chip *chip = i2c_get_clientdata(client);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1349)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1350) bh1770_chip_off(chip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1351)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1352) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1353) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1354)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1355) static int bh1770_runtime_resume(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1356) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1357) struct i2c_client *client = to_i2c_client(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1358) struct bh1770_chip *chip = i2c_get_clientdata(client);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1359)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1360) bh1770_chip_on(chip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1361)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1362) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1363) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1364) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1365)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1366) static const struct i2c_device_id bh1770_id[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1367) {"bh1770glc", 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1368) {"sfh7770", 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1369) {}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1370) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1371)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1372) MODULE_DEVICE_TABLE(i2c, bh1770_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1373)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1374) static const struct dev_pm_ops bh1770_pm_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1375) SET_SYSTEM_SLEEP_PM_OPS(bh1770_suspend, bh1770_resume)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1376) SET_RUNTIME_PM_OPS(bh1770_runtime_suspend, bh1770_runtime_resume, NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1377) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1378)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1379) static struct i2c_driver bh1770_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1380) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1381) .name = "bh1770glc",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1382) .pm = &bh1770_pm_ops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1383) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1384) .probe = bh1770_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1385) .remove = bh1770_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1386) .id_table = bh1770_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1387) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1388)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1389) module_i2c_driver(bh1770_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1390)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1391) MODULE_DESCRIPTION("BH1770GLC / SFH7770 combined ALS and proximity sensor");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1392) MODULE_AUTHOR("Samu Onkalo, Nokia Corporation");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1393) MODULE_LICENSE("GPL v2");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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