Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) // SPDX-License-Identifier: GPL-2.0+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3)  * lv0104cs.c: LV0104CS Ambient Light Sensor Driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  * Copyright (C) 2018
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  * Author: Jeff LaBundy <jeff@labundy.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8)  * 7-bit I2C slave address: 0x13
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10)  * Link to data sheet: https://www.onsemi.com/pub/Collateral/LV0104CS-D.PDF
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) #include <linux/i2c.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) #include <linux/err.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) #include <linux/mutex.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) #include <linux/delay.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) #include <linux/iio/iio.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) #include <linux/iio/sysfs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) #define LV0104CS_REGVAL_MEASURE		0xE0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) #define LV0104CS_REGVAL_SLEEP		0x00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) #define LV0104CS_SCALE_0_25X		0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) #define LV0104CS_SCALE_1X		1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) #define LV0104CS_SCALE_2X		2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) #define LV0104CS_SCALE_8X		3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) #define LV0104CS_SCALE_SHIFT		3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) #define LV0104CS_INTEG_12_5MS		0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) #define LV0104CS_INTEG_100MS		1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) #define LV0104CS_INTEG_200MS		2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) #define LV0104CS_INTEG_SHIFT		1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) #define LV0104CS_CALIBSCALE_UNITY	31
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) struct lv0104cs_private {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) 	struct i2c_client *client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) 	struct mutex lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) 	u8 calibscale;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) 	u8 scale;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) 	u8 int_time;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) struct lv0104cs_mapping {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) 	int val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) 	int val2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) 	u8 regval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) static const struct lv0104cs_mapping lv0104cs_calibscales[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 	{ 0, 666666, 0x81 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) 	{ 0, 800000, 0x82 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) 	{ 0, 857142, 0x83 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 	{ 0, 888888, 0x84 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 	{ 0, 909090, 0x85 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 	{ 0, 923076, 0x86 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 	{ 0, 933333, 0x87 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) 	{ 0, 941176, 0x88 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 	{ 0, 947368, 0x89 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 	{ 0, 952380, 0x8A },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 	{ 0, 956521, 0x8B },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 	{ 0, 960000, 0x8C },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 	{ 0, 962962, 0x8D },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) 	{ 0, 965517, 0x8E },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) 	{ 0, 967741, 0x8F },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 	{ 0, 969696, 0x90 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 	{ 0, 971428, 0x91 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 	{ 0, 972972, 0x92 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 	{ 0, 974358, 0x93 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) 	{ 0, 975609, 0x94 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 	{ 0, 976744, 0x95 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) 	{ 0, 977777, 0x96 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 	{ 0, 978723, 0x97 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) 	{ 0, 979591, 0x98 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 	{ 0, 980392, 0x99 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 	{ 0, 981132, 0x9A },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 	{ 0, 981818, 0x9B },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 	{ 0, 982456, 0x9C },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 	{ 0, 983050, 0x9D },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 	{ 0, 983606, 0x9E },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 	{ 0, 984126, 0x9F },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 	{ 1, 0, 0x80 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 	{ 1, 16129, 0xBF },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 	{ 1, 16666, 0xBE },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 	{ 1, 17241, 0xBD },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 	{ 1, 17857, 0xBC },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) 	{ 1, 18518, 0xBB },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 	{ 1, 19230, 0xBA },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 	{ 1, 20000, 0xB9 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 	{ 1, 20833, 0xB8 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 	{ 1, 21739, 0xB7 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 	{ 1, 22727, 0xB6 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 	{ 1, 23809, 0xB5 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 	{ 1, 24999, 0xB4 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 	{ 1, 26315, 0xB3 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 	{ 1, 27777, 0xB2 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 	{ 1, 29411, 0xB1 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 	{ 1, 31250, 0xB0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 	{ 1, 33333, 0xAF },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 	{ 1, 35714, 0xAE },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 	{ 1, 38461, 0xAD },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 	{ 1, 41666, 0xAC },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 	{ 1, 45454, 0xAB },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 	{ 1, 50000, 0xAA },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 	{ 1, 55555, 0xA9 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 	{ 1, 62500, 0xA8 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 	{ 1, 71428, 0xA7 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 	{ 1, 83333, 0xA6 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 	{ 1, 100000, 0xA5 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 	{ 1, 125000, 0xA4 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 	{ 1, 166666, 0xA3 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 	{ 1, 250000, 0xA2 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 	{ 1, 500000, 0xA1 },
^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) static const struct lv0104cs_mapping lv0104cs_scales[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 	{ 0, 250000, LV0104CS_SCALE_0_25X << LV0104CS_SCALE_SHIFT },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 	{ 1, 0, LV0104CS_SCALE_1X << LV0104CS_SCALE_SHIFT },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 	{ 2, 0, LV0104CS_SCALE_2X << LV0104CS_SCALE_SHIFT },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 	{ 8, 0, LV0104CS_SCALE_8X << LV0104CS_SCALE_SHIFT },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) static const struct lv0104cs_mapping lv0104cs_int_times[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 	{ 0, 12500, LV0104CS_INTEG_12_5MS << LV0104CS_INTEG_SHIFT },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 	{ 0, 100000, LV0104CS_INTEG_100MS << LV0104CS_INTEG_SHIFT },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) 	{ 0, 200000, LV0104CS_INTEG_200MS << LV0104CS_INTEG_SHIFT },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) static int lv0104cs_write_reg(struct i2c_client *client, u8 regval)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 	int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 	ret = i2c_master_send(client, (char *)&regval, sizeof(regval));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 	if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 		return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 	if (ret != sizeof(regval))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 		return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) static int lv0104cs_read_adc(struct i2c_client *client, u16 *adc_output)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) 	__be16 regval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 	int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 	ret = i2c_master_recv(client, (char *)&regval, sizeof(regval));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 	if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 		return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 	if (ret != sizeof(regval))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 		return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 	*adc_output = be16_to_cpu(regval);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) static int lv0104cs_get_lux(struct lv0104cs_private *lv0104cs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 				int *val, int *val2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 	u8 regval = LV0104CS_REGVAL_MEASURE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 	u16 adc_output;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 	int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 	regval |= lv0104cs_scales[lv0104cs->scale].regval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 	regval |= lv0104cs_int_times[lv0104cs->int_time].regval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 	ret = lv0104cs_write_reg(lv0104cs->client, regval);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 	if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 		return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 	/* wait for integration time to pass (with margin) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 	switch (lv0104cs->int_time) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 	case LV0104CS_INTEG_12_5MS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 		msleep(50);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 	case LV0104CS_INTEG_100MS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 		msleep(150);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) 	case LV0104CS_INTEG_200MS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 		msleep(250);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 	default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 	ret = lv0104cs_read_adc(lv0104cs->client, &adc_output);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 	if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) 		return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 	ret = lv0104cs_write_reg(lv0104cs->client, LV0104CS_REGVAL_SLEEP);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) 	if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 		return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 	/* convert ADC output to lux */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) 	switch (lv0104cs->scale) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 	case LV0104CS_SCALE_0_25X:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 		*val = adc_output * 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 		*val2 = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 	case LV0104CS_SCALE_1X:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 		*val = adc_output;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) 		*val2 = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) 	case LV0104CS_SCALE_2X:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) 		*val = adc_output / 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 		*val2 = (adc_output % 2) * 500000;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) 	case LV0104CS_SCALE_8X:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 		*val = adc_output / 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 		*val2 = (adc_output % 8) * 125000;
^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) 	default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) 	}
^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 lv0104cs_read_raw(struct iio_dev *indio_dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) 				struct iio_chan_spec const *chan,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) 				int *val, int *val2, long mask)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) 	struct lv0104cs_private *lv0104cs = iio_priv(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) 	int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) 	if (chan->type != IIO_LIGHT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) 	mutex_lock(&lv0104cs->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) 	switch (mask) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) 	case IIO_CHAN_INFO_PROCESSED:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) 		ret = lv0104cs_get_lux(lv0104cs, val, val2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) 		if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) 			goto err_mutex;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) 		ret = IIO_VAL_INT_PLUS_MICRO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) 	case IIO_CHAN_INFO_CALIBSCALE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) 		*val = lv0104cs_calibscales[lv0104cs->calibscale].val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) 		*val2 = lv0104cs_calibscales[lv0104cs->calibscale].val2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) 		ret = IIO_VAL_INT_PLUS_MICRO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) 	case IIO_CHAN_INFO_SCALE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) 		*val = lv0104cs_scales[lv0104cs->scale].val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) 		*val2 = lv0104cs_scales[lv0104cs->scale].val2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) 		ret = IIO_VAL_INT_PLUS_MICRO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) 	case IIO_CHAN_INFO_INT_TIME:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) 		*val = lv0104cs_int_times[lv0104cs->int_time].val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) 		*val2 = lv0104cs_int_times[lv0104cs->int_time].val2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) 		ret = IIO_VAL_INT_PLUS_MICRO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) 	default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) 		ret = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) err_mutex:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) 	mutex_unlock(&lv0104cs->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) 	return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) static int lv0104cs_set_calibscale(struct lv0104cs_private *lv0104cs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) 				int val, int val2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) 	int calibscale = val * 1000000 + val2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) 	int floor, ceil, mid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) 	int ret, i, index;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) 	/* round to nearest quantized calibscale (sensitivity) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) 	for (i = 0; i < ARRAY_SIZE(lv0104cs_calibscales) - 1; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) 		floor = lv0104cs_calibscales[i].val * 1000000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) 				+ lv0104cs_calibscales[i].val2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) 		ceil = lv0104cs_calibscales[i + 1].val * 1000000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) 				+ lv0104cs_calibscales[i + 1].val2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) 		mid = (floor + ceil) / 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) 		/* round down */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) 		if (calibscale >= floor && calibscale < mid) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) 			index = i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) 		/* round up */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) 		if (calibscale >= mid && calibscale <= ceil) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) 			index = i + 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) 	if (i == ARRAY_SIZE(lv0104cs_calibscales) - 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) 	mutex_lock(&lv0104cs->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) 	/* set calibscale (sensitivity) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) 	ret = lv0104cs_write_reg(lv0104cs->client,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) 			lv0104cs_calibscales[index].regval);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) 	if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) 		goto err_mutex;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) 	lv0104cs->calibscale = index;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) err_mutex:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) 	mutex_unlock(&lv0104cs->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) 	return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) static int lv0104cs_set_scale(struct lv0104cs_private *lv0104cs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) 				int val, int val2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) 	int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) 	/* hard matching */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) 	for (i = 0; i < ARRAY_SIZE(lv0104cs_scales); i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) 		if (val != lv0104cs_scales[i].val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) 			continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) 		if (val2 == lv0104cs_scales[i].val2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) 	if (i == ARRAY_SIZE(lv0104cs_scales))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) 	mutex_lock(&lv0104cs->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) 	lv0104cs->scale = i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) 	mutex_unlock(&lv0104cs->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) static int lv0104cs_set_int_time(struct lv0104cs_private *lv0104cs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) 				int val, int val2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) 	int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) 	/* hard matching */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) 	for (i = 0; i < ARRAY_SIZE(lv0104cs_int_times); i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) 		if (val != lv0104cs_int_times[i].val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) 			continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) 		if (val2 == lv0104cs_int_times[i].val2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) 	if (i == ARRAY_SIZE(lv0104cs_int_times))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) 	mutex_lock(&lv0104cs->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) 	lv0104cs->int_time = i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) 	mutex_unlock(&lv0104cs->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) static int lv0104cs_write_raw(struct iio_dev *indio_dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) 				struct iio_chan_spec const *chan,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) 				int val, int val2, long mask)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) 	struct lv0104cs_private *lv0104cs = iio_priv(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) 	if (chan->type != IIO_LIGHT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) 	switch (mask) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) 	case IIO_CHAN_INFO_CALIBSCALE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) 		return lv0104cs_set_calibscale(lv0104cs, val, val2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) 	case IIO_CHAN_INFO_SCALE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) 		return lv0104cs_set_scale(lv0104cs, val, val2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) 	case IIO_CHAN_INFO_INT_TIME:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) 		return lv0104cs_set_int_time(lv0104cs, val, val2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) 	default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) 		return -EINVAL;
^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) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) static ssize_t lv0104cs_show_calibscale_avail(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) 				struct device_attribute *attr, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) 	ssize_t len = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) 	int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) 	for (i = 0; i < ARRAY_SIZE(lv0104cs_calibscales); i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) 		len += scnprintf(buf + len, PAGE_SIZE - len, "%d.%06d ",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) 				lv0104cs_calibscales[i].val,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) 				lv0104cs_calibscales[i].val2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) 	buf[len - 1] = '\n';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) 	return len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) static ssize_t lv0104cs_show_scale_avail(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) 				struct device_attribute *attr, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) 	ssize_t len = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) 	int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) 	for (i = 0; i < ARRAY_SIZE(lv0104cs_scales); i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) 		len += scnprintf(buf + len, PAGE_SIZE - len, "%d.%06d ",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) 				lv0104cs_scales[i].val,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) 				lv0104cs_scales[i].val2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) 	buf[len - 1] = '\n';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) 	return len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) static ssize_t lv0104cs_show_int_time_avail(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) 				struct device_attribute *attr, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) 	ssize_t len = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) 	int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) 	for (i = 0; i < ARRAY_SIZE(lv0104cs_int_times); i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) 		len += scnprintf(buf + len, PAGE_SIZE - len, "%d.%06d ",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) 				lv0104cs_int_times[i].val,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) 				lv0104cs_int_times[i].val2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) 	buf[len - 1] = '\n';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) 	return len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) static IIO_DEVICE_ATTR(calibscale_available, 0444,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) 				lv0104cs_show_calibscale_avail, NULL, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) static IIO_DEVICE_ATTR(scale_available, 0444,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) 				lv0104cs_show_scale_avail, NULL, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) static IIO_DEV_ATTR_INT_TIME_AVAIL(lv0104cs_show_int_time_avail);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) static struct attribute *lv0104cs_attributes[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) 	&iio_dev_attr_calibscale_available.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) 	&iio_dev_attr_scale_available.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) 	&iio_dev_attr_integration_time_available.dev_attr.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) 	NULL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) static const struct attribute_group lv0104cs_attribute_group = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) 	.attrs = lv0104cs_attributes,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) static const struct iio_info lv0104cs_info = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) 	.attrs = &lv0104cs_attribute_group,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) 	.read_raw = &lv0104cs_read_raw,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) 	.write_raw = &lv0104cs_write_raw,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) static const struct iio_chan_spec lv0104cs_channels[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) 	{
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) 		.type = IIO_LIGHT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) 		.info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) 				      BIT(IIO_CHAN_INFO_CALIBSCALE) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) 				      BIT(IIO_CHAN_INFO_SCALE) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) 				      BIT(IIO_CHAN_INFO_INT_TIME),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) static int lv0104cs_probe(struct i2c_client *client,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) 				const struct i2c_device_id *id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) 	struct iio_dev *indio_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) 	struct lv0104cs_private *lv0104cs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) 	int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) 	indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*lv0104cs));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) 	if (!indio_dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) 		return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) 	lv0104cs = iio_priv(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) 	i2c_set_clientdata(client, lv0104cs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) 	lv0104cs->client = client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) 	mutex_init(&lv0104cs->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) 	lv0104cs->calibscale = LV0104CS_CALIBSCALE_UNITY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) 	lv0104cs->scale = LV0104CS_SCALE_1X;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) 	lv0104cs->int_time = LV0104CS_INTEG_200MS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) 	ret = lv0104cs_write_reg(lv0104cs->client,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) 			lv0104cs_calibscales[LV0104CS_CALIBSCALE_UNITY].regval);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) 	if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) 		return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) 	indio_dev->modes = INDIO_DIRECT_MODE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) 	indio_dev->channels = lv0104cs_channels;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) 	indio_dev->num_channels = ARRAY_SIZE(lv0104cs_channels);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) 	indio_dev->name = client->name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) 	indio_dev->info = &lv0104cs_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) 	return devm_iio_device_register(&client->dev, indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) static const struct i2c_device_id lv0104cs_id[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) 	{ "lv0104cs", 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) 	{ }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) MODULE_DEVICE_TABLE(i2c, lv0104cs_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) static struct i2c_driver lv0104cs_i2c_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) 	.driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) 		.name	= "lv0104cs",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) 	.id_table	= lv0104cs_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) 	.probe		= lv0104cs_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) module_i2c_driver(lv0104cs_i2c_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) MODULE_AUTHOR("Jeff LaBundy <jeff@labundy.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) MODULE_DESCRIPTION("LV0104CS Ambient Light Sensor Driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) MODULE_LICENSE("GPL");