^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) * These are the two Sharp GP2AP002 variants supported by this driver:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * GP2AP002A00F Ambient Light and Proximity Sensor
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * GP2AP002S00F Proximity Sensor
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * Copyright (C) 2020 Linaro Ltd.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * Author: Linus Walleij <linus.walleij@linaro.org>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * Based partly on the code in Sony Ericssons GP2AP00200F driver by
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) * Courtney Cavin and Oskar Andero in drivers/input/misc/gp2ap002a00f.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) * Based partly on a Samsung misc driver submitted by
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) * Donggeun Kim & Minkyu Kang in 2011:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) * https://lore.kernel.org/lkml/1315556546-7445-1-git-send-email-dg77.kim@samsung.com/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) * Based partly on a submission by
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) * Jonathan Bakker and Paweł Chmiel in january 2019:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) * https://lore.kernel.org/linux-input/20190125175045.22576-1-pawel.mikolaj.chmiel@gmail.com/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) * Based partly on code from the Samsung GT-S7710 by <mjchen@sta.samsung.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) * Based partly on the code in LG Electronics GP2AP00200F driver by
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) * Kenobi Lee <sungyoung.lee@lge.com> and EunYoung Cho <ey.cho@lge.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include <linux/i2c.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include <linux/regmap.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #include <linux/iio/iio.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #include <linux/iio/sysfs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #include <linux/iio/events.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #include <linux/iio/consumer.h> /* To get our ADC channel */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #include <linux/iio/types.h> /* To deal with our ADC channel */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #include <linux/delay.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #include <linux/regulator/consumer.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #include <linux/pm_runtime.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) #include <linux/interrupt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #include <linux/bits.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) #include <linux/math64.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) #include <linux/pm.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) #define GP2AP002_PROX_CHANNEL 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) #define GP2AP002_ALS_CHANNEL 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) /* ------------------------------------------------------------------------ */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) /* ADDRESS SYMBOL DATA Init R/W */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) /* D7 D6 D5 D4 D3 D2 D1 D0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) /* ------------------------------------------------------------------------ */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) /* 0 PROX X X X X X X X VO H'00 R */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) /* 1 GAIN X X X X LED0 X X X H'00 W */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) /* 2 HYS HYSD HYSC1 HYSC0 X HYSF3 HYSF2 HYSF1 HYSF0 H'00 W */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) /* 3 CYCLE X X CYCL2 CYCL1 CYCL0 OSC2 X X H'00 W */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) /* 4 OPMOD X X X ASD X X VCON SSD H'00 W */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) /* 6 CON X X X OCON1 OCON0 X X X H'00 W */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) /* ------------------------------------------------------------------------ */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) /* VO :Proximity sensing result(0: no detection, 1: detection) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) /* LED0 :Select switch for LED driver's On-registence(0:2x higher, 1:normal)*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) /* HYSD/HYSF :Adjusts the receiver sensitivity */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) /* OSC :Select switch internal clocl frequency hoppling(0:effective) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) /* CYCL :Determine the detection cycle(typically 8ms, up to 128x) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) /* SSD :Software Shutdown function(0:shutdown, 1:operating) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) /* VCON :VOUT output method control(0:normal, 1:interrupt) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) /* ASD :Select switch for analog sleep function(0:ineffective, 1:effective)*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) /* OCON :Select switch for enabling/disabling VOUT (00:enable, 11:disable) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) #define GP2AP002_PROX 0x00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) #define GP2AP002_GAIN 0x01
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) #define GP2AP002_HYS 0x02
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) #define GP2AP002_CYCLE 0x03
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) #define GP2AP002_OPMOD 0x04
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) #define GP2AP002_CON 0x06
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) #define GP2AP002_PROX_VO_DETECT BIT(0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) /* Setting this bit to 0 means 2x higher LED resistance */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) #define GP2AP002_GAIN_LED_NORMAL BIT(3)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) * These bits adjusts the proximity sensitivity, determining characteristics
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) * of the detection distance and its hysteresis.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) #define GP2AP002_HYS_HYSD_SHIFT 7
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) #define GP2AP002_HYS_HYSD_MASK BIT(7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) #define GP2AP002_HYS_HYSC_SHIFT 5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) #define GP2AP002_HYS_HYSC_MASK GENMASK(6, 5)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) #define GP2AP002_HYS_HYSF_SHIFT 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) #define GP2AP002_HYS_HYSF_MASK GENMASK(3, 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) #define GP2AP002_HYS_MASK (GP2AP002_HYS_HYSD_MASK | \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) GP2AP002_HYS_HYSC_MASK | \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) GP2AP002_HYS_HYSF_MASK)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) * These values determine the detection cycle response time
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) * 0: 8ms, 1: 16ms, 2: 32ms, 3: 64ms, 4: 128ms,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) * 5: 256ms, 6: 512ms, 7: 1024ms
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) #define GP2AP002_CYCLE_CYCL_SHIFT 3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) #define GP2AP002_CYCLE_CYCL_MASK GENMASK(5, 3)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) * Select switch for internal clock frequency hopping
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) * 0: effective,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) * 1: ineffective
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) #define GP2AP002_CYCLE_OSC_EFFECTIVE 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) #define GP2AP002_CYCLE_OSC_INEFFECTIVE BIT(2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) #define GP2AP002_CYCLE_OSC_MASK BIT(2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) /* Analog sleep effective */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) #define GP2AP002_OPMOD_ASD BIT(4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) /* Enable chip */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) #define GP2AP002_OPMOD_SSD_OPERATING BIT(0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) /* IRQ mode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) #define GP2AP002_OPMOD_VCON_IRQ BIT(1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) #define GP2AP002_OPMOD_MASK (BIT(0) | BIT(1) | BIT(4))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) * Select switch for enabling/disabling Vout pin
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) * 0: enable
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) * 2: force to go Low
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) * 3: force to go High
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) #define GP2AP002_CON_OCON_SHIFT 3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) #define GP2AP002_CON_OCON_ENABLE (0x0 << GP2AP002_CON_OCON_SHIFT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) #define GP2AP002_CON_OCON_LOW (0x2 << GP2AP002_CON_OCON_SHIFT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) #define GP2AP002_CON_OCON_HIGH (0x3 << GP2AP002_CON_OCON_SHIFT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) #define GP2AP002_CON_OCON_MASK (0x3 << GP2AP002_CON_OCON_SHIFT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) * struct gp2ap002 - GP2AP002 state
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) * @map: regmap pointer for the i2c regmap
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) * @dev: pointer to parent device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) * @vdd: regulator controlling VDD
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) * @vio: regulator controlling VIO
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) * @alsout: IIO ADC channel to convert the ALSOUT signal
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) * @hys_far: hysteresis control from device tree
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) * @hys_close: hysteresis control from device tree
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) * @is_gp2ap002s00f: this is the GP2AP002F variant of the chip
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) * @irq: the IRQ line used by this device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) * @enabled: we cannot read the status of the hardware so we need to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) * keep track of whether the event is enabled using this state variable
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) struct gp2ap002 {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) struct regmap *map;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) struct device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) struct regulator *vdd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) struct regulator *vio;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) struct iio_channel *alsout;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) u8 hys_far;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) u8 hys_close;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) bool is_gp2ap002s00f;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) int irq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) bool enabled;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) static irqreturn_t gp2ap002_prox_irq(int irq, void *d)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) struct iio_dev *indio_dev = d;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) struct gp2ap002 *gp2ap002 = iio_priv(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) u64 ev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) int val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) if (!gp2ap002->enabled)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) goto err_retrig;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) ret = regmap_read(gp2ap002->map, GP2AP002_PROX, &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) dev_err(gp2ap002->dev, "error reading proximity\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) goto err_retrig;
^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) if (val & GP2AP002_PROX_VO_DETECT) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) /* Close */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) dev_dbg(gp2ap002->dev, "close\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) ret = regmap_write(gp2ap002->map, GP2AP002_HYS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) gp2ap002->hys_far);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) dev_err(gp2ap002->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) "error setting up proximity hysteresis\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) ev = IIO_UNMOD_EVENT_CODE(IIO_PROXIMITY, GP2AP002_PROX_CHANNEL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) IIO_EV_TYPE_THRESH, IIO_EV_DIR_RISING);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) /* Far */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) dev_dbg(gp2ap002->dev, "far\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) ret = regmap_write(gp2ap002->map, GP2AP002_HYS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) gp2ap002->hys_close);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) dev_err(gp2ap002->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) "error setting up proximity hysteresis\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) ev = IIO_UNMOD_EVENT_CODE(IIO_PROXIMITY, GP2AP002_PROX_CHANNEL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) IIO_EV_TYPE_THRESH, IIO_EV_DIR_FALLING);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) iio_push_event(indio_dev, ev, iio_get_time_ns(indio_dev));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) * After changing hysteresis, we need to wait for one detection
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) * cycle to see if anything changed, or we will just trigger the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) * previous interrupt again. A detection cycle depends on the CYCLE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) * register, we are hard-coding ~8 ms in probe() so wait some more
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) * than this, 20-30 ms.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) usleep_range(20000, 30000);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) err_retrig:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) ret = regmap_write(gp2ap002->map, GP2AP002_CON,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) GP2AP002_CON_OCON_ENABLE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) dev_err(gp2ap002->dev, "error setting up VOUT control\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) return IRQ_HANDLED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) * This array maps current and lux.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) * Ambient light sensing range is 3 to 55000 lux.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) * This mapping is based on the following formula.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) * illuminance = 10 ^ (current[mA] / 10)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) * When the ADC measures 0, return 0 lux.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) static const u16 gp2ap002_illuminance_table[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 0, 1, 1, 2, 2, 3, 4, 5, 6, 8, 10, 12, 16, 20, 25, 32, 40, 50, 63, 79,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) 100, 126, 158, 200, 251, 316, 398, 501, 631, 794, 1000, 1259, 1585,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) 1995, 2512, 3162, 3981, 5012, 6310, 7943, 10000, 12589, 15849, 19953,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) 25119, 31623, 39811, 50119,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) static int gp2ap002_get_lux(struct gp2ap002 *gp2ap002)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) int ret, res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) u16 lux;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) ret = iio_read_channel_processed(gp2ap002->alsout, &res);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) dev_dbg(gp2ap002->dev, "read %d mA from ADC\n", res);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) /* ensure we don't under/overflow */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) res = clamp(res, 0, (int)ARRAY_SIZE(gp2ap002_illuminance_table) - 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) lux = gp2ap002_illuminance_table[res];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) return (int)lux;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) static int gp2ap002_read_raw(struct iio_dev *indio_dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) struct iio_chan_spec const *chan,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) int *val, int *val2, long mask)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) struct gp2ap002 *gp2ap002 = iio_priv(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) pm_runtime_get_sync(gp2ap002->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) switch (mask) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) case IIO_CHAN_INFO_RAW:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) switch (chan->type) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) case IIO_LIGHT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) ret = gp2ap002_get_lux(gp2ap002);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) *val = ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) ret = IIO_VAL_INT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) ret = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) ret = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) pm_runtime_mark_last_busy(gp2ap002->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) pm_runtime_put_autosuspend(gp2ap002->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) static int gp2ap002_init(struct gp2ap002 *gp2ap002)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) /* Set up the IR LED resistance */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) ret = regmap_write(gp2ap002->map, GP2AP002_GAIN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) GP2AP002_GAIN_LED_NORMAL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) dev_err(gp2ap002->dev, "error setting up LED gain\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) ret = regmap_write(gp2ap002->map, GP2AP002_HYS, gp2ap002->hys_far);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) dev_err(gp2ap002->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) "error setting up proximity hysteresis\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) /* Disable internal frequency hopping */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) ret = regmap_write(gp2ap002->map, GP2AP002_CYCLE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) GP2AP002_CYCLE_OSC_INEFFECTIVE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) dev_err(gp2ap002->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) "error setting up internal frequency hopping\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) /* Enable chip and IRQ, disable analog sleep */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) ret = regmap_write(gp2ap002->map, GP2AP002_OPMOD,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) GP2AP002_OPMOD_SSD_OPERATING |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) GP2AP002_OPMOD_VCON_IRQ);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) dev_err(gp2ap002->dev, "error setting up operation mode\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) /* Interrupt on VOUT enabled */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) ret = regmap_write(gp2ap002->map, GP2AP002_CON,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) GP2AP002_CON_OCON_ENABLE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) dev_err(gp2ap002->dev, "error setting up VOUT control\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) static int gp2ap002_read_event_config(struct iio_dev *indio_dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) const struct iio_chan_spec *chan,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) enum iio_event_type type,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) enum iio_event_direction dir)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) struct gp2ap002 *gp2ap002 = iio_priv(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) * We just keep track of this internally, as it is not possible to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) * query the hardware.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) return gp2ap002->enabled;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) static int gp2ap002_write_event_config(struct iio_dev *indio_dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) const struct iio_chan_spec *chan,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) enum iio_event_type type,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) enum iio_event_direction dir,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) int state)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) struct gp2ap002 *gp2ap002 = iio_priv(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) if (state) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) * This will bring the regulators up (unless they are on
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) * already) and reintialize the sensor by using runtime_pm
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) * callbacks.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) pm_runtime_get_sync(gp2ap002->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) gp2ap002->enabled = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) pm_runtime_mark_last_busy(gp2ap002->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) pm_runtime_put_autosuspend(gp2ap002->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) gp2ap002->enabled = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) static const struct iio_info gp2ap002_info = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) .read_raw = gp2ap002_read_raw,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) .read_event_config = gp2ap002_read_event_config,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) .write_event_config = gp2ap002_write_event_config,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) static const struct iio_event_spec gp2ap002_events[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) .type = IIO_EV_TYPE_THRESH,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) .dir = IIO_EV_DIR_EITHER,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) .mask_separate = BIT(IIO_EV_INFO_ENABLE),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) },
^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) static const struct iio_chan_spec gp2ap002_channels[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) .type = IIO_PROXIMITY,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) .event_spec = gp2ap002_events,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) .num_event_specs = ARRAY_SIZE(gp2ap002_events),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) .type = IIO_LIGHT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) .info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) .channel = GP2AP002_ALS_CHANNEL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) * We need a special regmap because this hardware expects to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) * write single bytes to registers but read a 16bit word on some
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) * variants and discard the lower 8 bits so combine
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) * i2c_smbus_read_word_data() with i2c_smbus_write_byte_data()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) * selectively like this.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) static int gp2ap002_regmap_i2c_read(void *context, unsigned int reg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) unsigned int *val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) struct device *dev = context;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) struct i2c_client *i2c = to_i2c_client(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) ret = i2c_smbus_read_word_data(i2c, reg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) *val = (ret >> 8) & 0xFF;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) static int gp2ap002_regmap_i2c_write(void *context, unsigned int reg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) unsigned int val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) struct device *dev = context;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) struct i2c_client *i2c = to_i2c_client(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) return i2c_smbus_write_byte_data(i2c, reg, val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) static struct regmap_bus gp2ap002_regmap_bus = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) .reg_read = gp2ap002_regmap_i2c_read,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) .reg_write = gp2ap002_regmap_i2c_write,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) static int gp2ap002_probe(struct i2c_client *client,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) const struct i2c_device_id *id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) struct gp2ap002 *gp2ap002;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) struct iio_dev *indio_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) struct device *dev = &client->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) enum iio_chan_type ch_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) static const struct regmap_config config = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) .reg_bits = 8,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) .val_bits = 8,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) .max_register = GP2AP002_CON,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) struct regmap *regmap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) int num_chan;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) const char *compat;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) u8 val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) indio_dev = devm_iio_device_alloc(dev, sizeof(*gp2ap002));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) if (!indio_dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) i2c_set_clientdata(client, indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) gp2ap002 = iio_priv(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) gp2ap002->dev = dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) * Check the device compatible like this makes it possible to use
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) * ACPI PRP0001 for registering the sensor using device tree
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) * properties.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) ret = device_property_read_string(dev, "compatible", &compat);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) dev_err(dev, "cannot check compatible\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) gp2ap002->is_gp2ap002s00f = !strcmp(compat, "sharp,gp2ap002s00f");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) regmap = devm_regmap_init(dev, &gp2ap002_regmap_bus, dev, &config);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) if (IS_ERR(regmap)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) dev_err(dev, "Failed to register i2c regmap %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) (int)PTR_ERR(regmap));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) return PTR_ERR(regmap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) gp2ap002->map = regmap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) * The hysteresis settings are coded into the device tree as values
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) * to be written into the hysteresis register. The datasheet defines
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) * modes "A", "B1" and "B2" with fixed values to be use but vendor
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) * code trees for actual devices are tweaking these values and refer to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) * modes named things like "B1.5". To be able to support any devices,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) * we allow passing an arbitrary hysteresis setting for "near" and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) * "far".
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) /* Check the device tree for the IR LED hysteresis */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) ret = device_property_read_u8(dev, "sharp,proximity-far-hysteresis",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) dev_err(dev, "failed to obtain proximity far setting\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) dev_dbg(dev, "proximity far setting %02x\n", val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) gp2ap002->hys_far = val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) ret = device_property_read_u8(dev, "sharp,proximity-close-hysteresis",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) dev_err(dev, "failed to obtain proximity close setting\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) dev_dbg(dev, "proximity close setting %02x\n", val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) gp2ap002->hys_close = val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) /* The GP2AP002A00F has a light sensor too */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) if (!gp2ap002->is_gp2ap002s00f) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) gp2ap002->alsout = devm_iio_channel_get(dev, "alsout");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) if (IS_ERR(gp2ap002->alsout)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) if (PTR_ERR(gp2ap002->alsout) == -ENODEV) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) dev_err(dev, "no ADC, deferring...\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) return -EPROBE_DEFER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) dev_err(dev, "failed to get ALSOUT ADC channel\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) return PTR_ERR(gp2ap002->alsout);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) ret = iio_get_channel_type(gp2ap002->alsout, &ch_type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) if (ch_type != IIO_CURRENT) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) dev_err(dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) "wrong type of IIO channel specified for ALSOUT\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) gp2ap002->vdd = devm_regulator_get(dev, "vdd");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) if (IS_ERR(gp2ap002->vdd)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) dev_err(dev, "failed to get VDD regulator\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) return PTR_ERR(gp2ap002->vdd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) gp2ap002->vio = devm_regulator_get(dev, "vio");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) if (IS_ERR(gp2ap002->vio)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) dev_err(dev, "failed to get VIO regulator\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) return PTR_ERR(gp2ap002->vio);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) /* Operating voltage 2.4V .. 3.6V according to datasheet */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) ret = regulator_set_voltage(gp2ap002->vdd, 2400000, 3600000);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) dev_err(dev, "failed to sett VDD voltage\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) /* VIO should be between 1.65V and VDD */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) ret = regulator_get_voltage(gp2ap002->vdd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) dev_err(dev, "failed to get VDD voltage\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) ret = regulator_set_voltage(gp2ap002->vio, 1650000, ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) dev_err(dev, "failed to set VIO voltage\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) ret = regulator_enable(gp2ap002->vdd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) dev_err(dev, "failed to enable VDD regulator\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) ret = regulator_enable(gp2ap002->vio);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) dev_err(dev, "failed to enable VIO regulator\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) goto out_disable_vdd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) msleep(20);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) * Initialize the device and signal to runtime PM that now we are
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) * definitely up and using power.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) ret = gp2ap002_init(gp2ap002);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) dev_err(dev, "initialization failed\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) goto out_disable_vio;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) pm_runtime_get_noresume(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) pm_runtime_set_active(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) pm_runtime_enable(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) gp2ap002->enabled = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) ret = devm_request_threaded_irq(dev, client->irq, NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) gp2ap002_prox_irq, IRQF_ONESHOT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) "gp2ap002", indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) dev_err(dev, "unable to request IRQ\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) goto out_put_pm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) gp2ap002->irq = client->irq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) * As the device takes 20 ms + regulator delay to come up with a fresh
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) * measurement after power-on, do not shut it down unnecessarily.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) * Set autosuspend to a one second.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) pm_runtime_set_autosuspend_delay(dev, 1000);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) pm_runtime_use_autosuspend(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) pm_runtime_put(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) indio_dev->info = &gp2ap002_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) indio_dev->name = "gp2ap002";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) indio_dev->channels = gp2ap002_channels;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) /* Skip light channel for the proximity-only sensor */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) num_chan = ARRAY_SIZE(gp2ap002_channels);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) if (gp2ap002->is_gp2ap002s00f)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) num_chan--;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) indio_dev->num_channels = num_chan;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) indio_dev->modes = INDIO_DIRECT_MODE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) ret = iio_device_register(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) goto out_disable_pm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) dev_dbg(dev, "Sharp GP2AP002 probed successfully\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) out_put_pm:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) pm_runtime_put_noidle(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) out_disable_pm:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) pm_runtime_disable(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) out_disable_vio:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) regulator_disable(gp2ap002->vio);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622) out_disable_vdd:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) regulator_disable(gp2ap002->vdd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) static int gp2ap002_remove(struct i2c_client *client)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) struct iio_dev *indio_dev = i2c_get_clientdata(client);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) struct gp2ap002 *gp2ap002 = iio_priv(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631) struct device *dev = &client->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) pm_runtime_get_sync(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) pm_runtime_put_noidle(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635) pm_runtime_disable(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) iio_device_unregister(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637) regulator_disable(gp2ap002->vio);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) regulator_disable(gp2ap002->vdd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) static int __maybe_unused gp2ap002_runtime_suspend(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) struct iio_dev *indio_dev = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646) struct gp2ap002 *gp2ap002 = iio_priv(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) /* Deactivate the IRQ */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650) disable_irq(gp2ap002->irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652) /* Disable chip and IRQ, everything off */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653) ret = regmap_write(gp2ap002->map, GP2AP002_OPMOD, 0x00);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655) dev_err(gp2ap002->dev, "error setting up operation mode\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) * As these regulators may be shared, at least we are now in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660) * sleep even if the regulators aren't really turned off.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662) regulator_disable(gp2ap002->vio);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663) regulator_disable(gp2ap002->vdd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668) static int __maybe_unused gp2ap002_runtime_resume(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670) struct iio_dev *indio_dev = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671) struct gp2ap002 *gp2ap002 = iio_priv(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) ret = regulator_enable(gp2ap002->vdd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676) dev_err(dev, "failed to enable VDD regulator in resume path\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679) ret = regulator_enable(gp2ap002->vio);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681) dev_err(dev, "failed to enable VIO regulator in resume path\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685) msleep(20);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687) ret = gp2ap002_init(gp2ap002);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689) dev_err(dev, "re-initialization failed\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693) /* Re-activate the IRQ */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694) enable_irq(gp2ap002->irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699) static const struct dev_pm_ops gp2ap002_dev_pm_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700) SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701) pm_runtime_force_resume)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702) SET_RUNTIME_PM_OPS(gp2ap002_runtime_suspend,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703) gp2ap002_runtime_resume, NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 706) static const struct i2c_device_id gp2ap002_id_table[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 707) { "gp2ap002", 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 708) { },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 709) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 710) MODULE_DEVICE_TABLE(i2c, gp2ap002_id_table);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 711)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 712) static const struct of_device_id gp2ap002_of_match[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 713) { .compatible = "sharp,gp2ap002a00f" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 714) { .compatible = "sharp,gp2ap002s00f" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 715) { },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 716) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 717) MODULE_DEVICE_TABLE(of, gp2ap002_of_match);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 718)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 719) static struct i2c_driver gp2ap002_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 720) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 721) .name = "gp2ap002",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 722) .of_match_table = gp2ap002_of_match,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 723) .pm = &gp2ap002_dev_pm_ops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 724) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 725) .probe = gp2ap002_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 726) .remove = gp2ap002_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 727) .id_table = gp2ap002_id_table,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 728) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 729) module_i2c_driver(gp2ap002_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 730)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 731) MODULE_AUTHOR("Linus Walleij <linus.walleij@linaro.org>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 732) MODULE_DESCRIPTION("GP2AP002 ambient light and proximity sensor driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 733) MODULE_LICENSE("GPL v2");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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