Orange Pi5 kernel

^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)  * CM3605 Ambient Light and Proximity Sensor
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  * Copyright (C) 2016 Linaro Ltd.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  * Author: Linus Walleij <linus.walleij@linaro.org>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8)  * This hardware was found in the very first Nexus One handset from Google/HTC
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9)  * and an early endavour into mobile light and proximity sensors.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) 
^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/iio/iio.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) #include <linux/iio/sysfs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) #include <linux/iio/events.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) #include <linux/iio/consumer.h> /* To get our ADC channel */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) #include <linux/iio/types.h> /* To deal with our ADC channel */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) #include <linux/leds.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) #include <linux/platform_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) #include <linux/of.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) #include <linux/regulator/consumer.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) #include <linux/gpio/consumer.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) #include <linux/interrupt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) #include <linux/math64.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) #include <linux/pm.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) #define CM3605_PROX_CHANNEL 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) #define CM3605_ALS_CHANNEL 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) #define CM3605_AOUT_TYP_MAX_MV 1550
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) /* It should not go above 1.650V according to the data sheet */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) #define CM3605_AOUT_MAX_MV 1650
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35)  * struct cm3605 - CM3605 state
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36)  * @dev: pointer to parent device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37)  * @vdd: regulator controlling VDD
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38)  * @aset: sleep enable GPIO, high = sleep
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39)  * @aout: IIO ADC channel to convert the AOUT signal
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40)  * @als_max: maximum LUX detection (depends on RSET)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41)  * @dir: proximity direction: start as FALLING
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42)  * @led: trigger for the infrared LED used by the proximity sensor
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) struct cm3605 {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) 	struct device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) 	struct regulator *vdd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) 	struct gpio_desc *aset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) 	struct iio_channel *aout;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) 	s32 als_max;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) 	enum iio_event_direction dir;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) 	struct led_trigger *led;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) static irqreturn_t cm3605_prox_irq(int irq, void *d)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 	struct iio_dev *indio_dev = d;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 	struct cm3605 *cm3605 = iio_priv(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 	u64 ev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) 	ev = IIO_UNMOD_EVENT_CODE(IIO_PROXIMITY, CM3605_PROX_CHANNEL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 				  IIO_EV_TYPE_THRESH, cm3605->dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 	iio_push_event(indio_dev, ev, iio_get_time_ns(indio_dev));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 	/* Invert the edge for each event */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 	if (cm3605->dir == IIO_EV_DIR_RISING)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) 		cm3605->dir = IIO_EV_DIR_FALLING;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) 	else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 		cm3605->dir = IIO_EV_DIR_RISING;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 	return IRQ_HANDLED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) static int cm3605_get_lux(struct cm3605 *cm3605)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 	int ret, res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) 	s64 lux;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 	ret = iio_read_channel_processed(cm3605->aout, &res);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 	if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 		return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 	dev_dbg(cm3605->dev, "read %d mV from ADC\n", res);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 	/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 	 * AOUT has an offset of ~30mV then linear at dark
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 	 * then goes from 2.54 up to 650 LUX yielding 1.55V
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 	 * (1550 mV) so scale the returned value to this interval
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 	 * using simple linear interpolation.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 	if (res < 30)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 	if (res > CM3605_AOUT_MAX_MV)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 		dev_err(cm3605->dev, "device out of range\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 	/* Remove bias */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 	lux = res - 30;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 	/* Linear interpolation between 0 and ALS typ max */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 	lux *= cm3605->als_max;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 	lux = div64_s64(lux, CM3605_AOUT_TYP_MAX_MV);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 	return lux;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) static int cm3605_read_raw(struct iio_dev *indio_dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 			   struct iio_chan_spec const *chan,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 			   int *val, int *val2, long mask)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 	struct cm3605 *cm3605 = iio_priv(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 	int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 	switch (mask) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 	case IIO_CHAN_INFO_RAW:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 		switch (chan->type) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 		case IIO_LIGHT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 			ret = cm3605_get_lux(cm3605);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 			if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 				return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 			*val = ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 			return IIO_VAL_INT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 		default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 			return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 	default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) static const struct iio_info cm3605_info = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 	.read_raw = cm3605_read_raw,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) static const struct iio_event_spec cm3605_events[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 	{
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 		.type = IIO_EV_TYPE_THRESH,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 		.dir = IIO_EV_DIR_EITHER,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 		.mask_separate = BIT(IIO_EV_INFO_ENABLE),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) static const struct iio_chan_spec cm3605_channels[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 	{
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 		.type = IIO_PROXIMITY,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 		.event_spec = cm3605_events,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) 		.num_event_specs = ARRAY_SIZE(cm3605_events),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 	{
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 		.type = IIO_LIGHT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 		.channel = CM3605_ALS_CHANNEL,
^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) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) static int cm3605_probe(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 	struct cm3605 *cm3605;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 	struct iio_dev *indio_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 	struct device *dev = &pdev->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 	struct device_node *np = dev->of_node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 	enum iio_chan_type ch_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 	u32 rset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 	int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 	indio_dev = devm_iio_device_alloc(dev, sizeof(*cm3605));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 	if (!indio_dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 		return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 	platform_set_drvdata(pdev, indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 	cm3605 = iio_priv(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 	cm3605->dev = dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 	cm3605->dir = IIO_EV_DIR_FALLING;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 	ret = of_property_read_u32(np, "capella,aset-resistance-ohms", &rset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 	if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 		dev_info(dev, "no RSET specified, assuming 100K\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 		rset = 100000;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 	switch (rset) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 	case 50000:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 		cm3605->als_max = 650;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 	case 100000:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) 		cm3605->als_max = 300;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) 	case 300000:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) 		cm3605->als_max = 100;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 	case 600000:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 		cm3605->als_max = 50;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 	default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 		dev_info(dev, "non-standard resistance\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) 	cm3605->aout = devm_iio_channel_get(dev, "aout");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 	if (IS_ERR(cm3605->aout)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) 		if (PTR_ERR(cm3605->aout) == -ENODEV) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 			dev_err(dev, "no ADC, deferring...\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) 			return -EPROBE_DEFER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 		dev_err(dev, "failed to get AOUT ADC channel\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 		return PTR_ERR(cm3605->aout);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 	ret = iio_get_channel_type(cm3605->aout, &ch_type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 	if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 		return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) 	if (ch_type != IIO_VOLTAGE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 		dev_err(dev, "wrong type of IIO channel specified for AOUT\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 	cm3605->vdd = devm_regulator_get(dev, "vdd");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 	if (IS_ERR(cm3605->vdd)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 		dev_err(dev, "failed to get VDD regulator\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) 		return PTR_ERR(cm3605->vdd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 	ret = regulator_enable(cm3605->vdd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 	if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) 		dev_err(dev, "failed to enable VDD regulator\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) 		return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) 	cm3605->aset = devm_gpiod_get(dev, "aset", GPIOD_OUT_HIGH);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) 	if (IS_ERR(cm3605->aset)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) 		dev_err(dev, "no ASET GPIO\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) 		ret = PTR_ERR(cm3605->aset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) 		goto out_disable_vdd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) 	ret = devm_request_threaded_irq(dev, platform_get_irq(pdev, 0),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) 			cm3605_prox_irq, NULL, 0, "cm3605", indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) 	if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) 		dev_err(dev, "unable to request IRQ\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) 		goto out_disable_aset;
^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) 	/* Just name the trigger the same as the driver */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) 	led_trigger_register_simple("cm3605", &cm3605->led);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) 	led_trigger_event(cm3605->led, LED_FULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) 	indio_dev->info = &cm3605_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) 	indio_dev->name = "cm3605";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) 	indio_dev->channels = cm3605_channels;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) 	indio_dev->num_channels = ARRAY_SIZE(cm3605_channels);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) 	indio_dev->modes = INDIO_DIRECT_MODE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) 	ret = iio_device_register(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) 	if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) 		goto out_remove_trigger;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) 	dev_info(dev, "Capella Microsystems CM3605 enabled range 0..%d LUX\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) 		 cm3605->als_max);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) out_remove_trigger:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) 	led_trigger_event(cm3605->led, LED_OFF);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) 	led_trigger_unregister_simple(cm3605->led);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) out_disable_aset:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) 	gpiod_set_value_cansleep(cm3605->aset, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) out_disable_vdd:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) 	regulator_disable(cm3605->vdd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) 	return ret;
^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) static int cm3605_remove(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) 	struct iio_dev *indio_dev = platform_get_drvdata(pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) 	struct cm3605 *cm3605 = iio_priv(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) 	led_trigger_event(cm3605->led, LED_OFF);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) 	led_trigger_unregister_simple(cm3605->led);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) 	gpiod_set_value_cansleep(cm3605->aset, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) 	iio_device_unregister(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) 	regulator_disable(cm3605->vdd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) 
^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) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) static int __maybe_unused cm3605_pm_suspend(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) 	struct iio_dev *indio_dev = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) 	struct cm3605 *cm3605 = iio_priv(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) 	led_trigger_event(cm3605->led, LED_OFF);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) 	regulator_disable(cm3605->vdd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) static int __maybe_unused cm3605_pm_resume(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) 	struct iio_dev *indio_dev = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) 	struct cm3605 *cm3605 = iio_priv(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) 	int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) 	ret = regulator_enable(cm3605->vdd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) 	if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) 		dev_err(dev, "failed to enable regulator in resume path\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) 	led_trigger_event(cm3605->led, LED_FULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) static const struct dev_pm_ops cm3605_dev_pm_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) 	SET_SYSTEM_SLEEP_PM_OPS(cm3605_pm_suspend,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) 				cm3605_pm_resume)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) static const struct of_device_id cm3605_of_match[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) 	{.compatible = "capella,cm3605"},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) 	{ },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) MODULE_DEVICE_TABLE(of, cm3605_of_match);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) static struct platform_driver cm3605_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) 	.driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) 		.name = "cm3605",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) 		.of_match_table = cm3605_of_match,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) 		.pm = &cm3605_dev_pm_ops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) 	.probe = cm3605_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) 	.remove = cm3605_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) module_platform_driver(cm3605_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) MODULE_AUTHOR("Linus Walleij <linus.walleij@linaro.org>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) MODULE_DESCRIPTION("CM3605 ambient light and proximity sensor driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) MODULE_LICENSE("GPL");