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)  * TI LP8788 MFD - ADC driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  * Copyright 2012 Texas Instruments
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7)  * Author: Milo(Woogyom) Kim <milo.kim@ti.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) #include <linux/delay.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) #include <linux/iio/iio.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) #include <linux/iio/driver.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) #include <linux/iio/machine.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) #include <linux/mfd/lp8788.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) #include <linux/mutex.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) #include <linux/platform_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) /* register address */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) #define LP8788_ADC_CONF			0x60
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) #define LP8788_ADC_RAW			0x61
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) #define LP8788_ADC_DONE			0x63
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) #define ADC_CONV_START			1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) struct lp8788_adc {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) 	struct lp8788 *lp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) 	struct iio_map *map;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) 	struct mutex lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) static const int lp8788_scale[LPADC_MAX] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) 	[LPADC_VBATT_5P5] = 1343101,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) 	[LPADC_VIN_CHG]   = 3052503,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) 	[LPADC_IBATT]     = 610500,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) 	[LPADC_IC_TEMP]   = 61050,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) 	[LPADC_VBATT_6P0] = 1465201,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) 	[LPADC_VBATT_5P0] = 1221001,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) 	[LPADC_ADC1]      = 610500,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) 	[LPADC_ADC2]      = 610500,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) 	[LPADC_VDD]       = 1025641,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) 	[LPADC_VCOIN]     = 757020,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) 	[LPADC_ADC3]      = 610500,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) 	[LPADC_ADC4]      = 610500,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) static int lp8788_get_adc_result(struct lp8788_adc *adc, enum lp8788_adc_id id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) 				int *val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) 	unsigned int msb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) 	unsigned int lsb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 	unsigned int result;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) 	u8 data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) 	u8 rawdata[2];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 	int size = ARRAY_SIZE(rawdata);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 	int retry = 5;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 	int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) 	data = (id << 1) | ADC_CONV_START;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 	ret = lp8788_write_byte(adc->lp, LP8788_ADC_CONF, data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 	if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 		goto err_io;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 	/* retry until adc conversion is done */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) 	data = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) 	while (retry--) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 		usleep_range(100, 200);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 		ret = lp8788_read_byte(adc->lp, LP8788_ADC_DONE, &data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 		if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) 			goto err_io;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) 		/* conversion done */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 		if (data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 	ret = lp8788_read_multi_bytes(adc->lp, LP8788_ADC_RAW, rawdata, size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 	if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 		goto err_io;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 	msb = (rawdata[0] << 4) & 0x00000ff0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 	lsb = (rawdata[1] >> 4) & 0x0000000f;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 	result = msb | lsb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 	*val = result;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) err_io:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 	return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) static int lp8788_adc_read_raw(struct iio_dev *indio_dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 			struct iio_chan_spec const *chan,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 			int *val, int *val2, long mask)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 	struct lp8788_adc *adc = iio_priv(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 	enum lp8788_adc_id id = chan->channel;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 	int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 	mutex_lock(&adc->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 	switch (mask) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 	case IIO_CHAN_INFO_RAW:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 		ret = lp8788_get_adc_result(adc, id, val) ? -EIO : IIO_VAL_INT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 	case IIO_CHAN_INFO_SCALE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 		*val = lp8788_scale[id] / 1000000;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 		*val2 = lp8788_scale[id] % 1000000;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 		ret = IIO_VAL_INT_PLUS_MICRO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 	default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 		ret = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 	mutex_unlock(&adc->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 	return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) static const struct iio_info lp8788_adc_info = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 	.read_raw = &lp8788_adc_read_raw,
^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) #define LP8788_CHAN(_id, _type) {				\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) 		.type = _type,					\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) 		.indexed = 1,					\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 		.channel = LPADC_##_id,				\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |	\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 			BIT(IIO_CHAN_INFO_SCALE),		\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 		.datasheet_name = #_id,				\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) static const struct iio_chan_spec lp8788_adc_channels[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 	[LPADC_VBATT_5P5] = LP8788_CHAN(VBATT_5P5, IIO_VOLTAGE),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 	[LPADC_VIN_CHG]   = LP8788_CHAN(VIN_CHG, IIO_VOLTAGE),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 	[LPADC_IBATT]     = LP8788_CHAN(IBATT, IIO_CURRENT),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) 	[LPADC_IC_TEMP]   = LP8788_CHAN(IC_TEMP, IIO_TEMP),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 	[LPADC_VBATT_6P0] = LP8788_CHAN(VBATT_6P0, IIO_VOLTAGE),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 	[LPADC_VBATT_5P0] = LP8788_CHAN(VBATT_5P0, IIO_VOLTAGE),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 	[LPADC_ADC1]      = LP8788_CHAN(ADC1, IIO_VOLTAGE),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 	[LPADC_ADC2]      = LP8788_CHAN(ADC2, IIO_VOLTAGE),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) 	[LPADC_VDD]       = LP8788_CHAN(VDD, IIO_VOLTAGE),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) 	[LPADC_VCOIN]     = LP8788_CHAN(VCOIN, IIO_VOLTAGE),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 	[LPADC_ADC3]      = LP8788_CHAN(ADC3, IIO_VOLTAGE),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 	[LPADC_ADC4]      = LP8788_CHAN(ADC4, IIO_VOLTAGE),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) /* default maps used by iio consumer (lp8788-charger driver) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) static struct iio_map lp8788_default_iio_maps[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 	{
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 		.consumer_dev_name = "lp8788-charger",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 		.consumer_channel = "lp8788_vbatt_5p0",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 		.adc_channel_label = "VBATT_5P0",
^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) 		.consumer_dev_name = "lp8788-charger",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 		.consumer_channel = "lp8788_adc1",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 		.adc_channel_label = "ADC1",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 	{ }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) static int lp8788_iio_map_register(struct iio_dev *indio_dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 				struct lp8788_platform_data *pdata,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 				struct lp8788_adc *adc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 	struct iio_map *map;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 	int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 	map = (!pdata || !pdata->adc_pdata) ?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 		lp8788_default_iio_maps : pdata->adc_pdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 	ret = iio_map_array_register(indio_dev, map);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) 	if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 		dev_err(&indio_dev->dev, "iio map err: %d\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 		return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 	adc->map = map;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) static int lp8788_adc_probe(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 	struct lp8788 *lp = dev_get_drvdata(pdev->dev.parent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 	struct iio_dev *indio_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 	struct lp8788_adc *adc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 	int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) 	indio_dev = devm_iio_device_alloc(&pdev->dev, sizeof(*adc));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 	if (!indio_dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 		return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 	adc = iio_priv(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) 	adc->lp = lp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 	platform_set_drvdata(pdev, indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 	ret = lp8788_iio_map_register(indio_dev, lp->pdata, adc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 	if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 		return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 	mutex_init(&adc->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 	indio_dev->name = pdev->name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) 	indio_dev->modes = INDIO_DIRECT_MODE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 	indio_dev->info = &lp8788_adc_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) 	indio_dev->channels = lp8788_adc_channels;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) 	indio_dev->num_channels = ARRAY_SIZE(lp8788_adc_channels);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 	ret = iio_device_register(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 	if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 		dev_err(&pdev->dev, "iio dev register err: %d\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) 		goto err_iio_device;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) err_iio_device:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 	iio_map_array_unregister(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) 	return ret;
^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) static int lp8788_adc_remove(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) 	struct iio_dev *indio_dev = platform_get_drvdata(pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) 	iio_device_unregister(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) 	iio_map_array_unregister(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) static struct platform_driver lp8788_adc_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) 	.probe = lp8788_adc_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) 	.remove = lp8788_adc_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) 	.driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) 		.name = LP8788_DEV_ADC,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) module_platform_driver(lp8788_adc_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) MODULE_DESCRIPTION("Texas Instruments LP8788 ADC Driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) MODULE_AUTHOR("Milo Kim");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) MODULE_LICENSE("GPL");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) MODULE_ALIAS("platform:lp8788-adc");