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)  * Azoteq IQS621/622 Ambient Light Sensors
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  * Copyright (C) 2019 Jeff LaBundy <jeff@labundy.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8) #include <linux/device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9) #include <linux/iio/events.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) #include <linux/iio/iio.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) #include <linux/mfd/iqs62x.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) #include <linux/mutex.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) #include <linux/notifier.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) #include <linux/platform_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) #include <linux/regmap.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) #define IQS621_ALS_FLAGS_LIGHT			BIT(7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) #define IQS621_ALS_FLAGS_RANGE			GENMASK(3, 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) #define IQS621_ALS_UI_OUT			0x17
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) #define IQS621_ALS_THRESH_DARK			0x80
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) #define IQS621_ALS_THRESH_LIGHT			0x81
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) #define IQS622_IR_RANGE				0x15
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) #define IQS622_IR_FLAGS				0x16
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) #define IQS622_IR_FLAGS_TOUCH			BIT(1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) #define IQS622_IR_FLAGS_PROX			BIT(0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) #define IQS622_IR_UI_OUT			0x17
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) #define IQS622_IR_THRESH_PROX			0x91
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) #define IQS622_IR_THRESH_TOUCH			0x92
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) struct iqs621_als_private {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) 	struct iqs62x_core *iqs62x;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) 	struct iio_dev *indio_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) 	struct notifier_block notifier;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) 	struct mutex lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) 	bool light_en;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) 	bool range_en;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) 	bool prox_en;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) 	u8 als_flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) 	u8 ir_flags_mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) 	u8 ir_flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) 	u8 thresh_light;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) 	u8 thresh_dark;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) 	u8 thresh_prox;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) static int iqs621_als_init(struct iqs621_als_private *iqs621_als)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) 	struct iqs62x_core *iqs62x = iqs621_als->iqs62x;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 	unsigned int event_mask = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 	int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 	switch (iqs621_als->ir_flags_mask) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) 	case IQS622_IR_FLAGS_TOUCH:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 		ret = regmap_write(iqs62x->regmap, IQS622_IR_THRESH_TOUCH,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 				   iqs621_als->thresh_prox);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 	case IQS622_IR_FLAGS_PROX:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) 		ret = regmap_write(iqs62x->regmap, IQS622_IR_THRESH_PROX,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) 				   iqs621_als->thresh_prox);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 	default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 		ret = regmap_write(iqs62x->regmap, IQS621_ALS_THRESH_LIGHT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) 				   iqs621_als->thresh_light);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 		if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) 			return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) 		ret = regmap_write(iqs62x->regmap, IQS621_ALS_THRESH_DARK,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 				   iqs621_als->thresh_dark);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 	if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 		return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 	if (iqs621_als->light_en || iqs621_als->range_en)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 		event_mask |= iqs62x->dev_desc->als_mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 	if (iqs621_als->prox_en)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 		event_mask |= iqs62x->dev_desc->ir_mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) 	return regmap_update_bits(iqs62x->regmap, IQS620_GLBL_EVENT_MASK,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 				  event_mask, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) static int iqs621_als_notifier(struct notifier_block *notifier,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 			       unsigned long event_flags, void *context)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 	struct iqs62x_event_data *event_data = context;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 	struct iqs621_als_private *iqs621_als;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 	struct iio_dev *indio_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 	bool light_new, light_old;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 	bool prox_new, prox_old;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 	u8 range_new, range_old;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 	s64 timestamp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 	int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 	iqs621_als = container_of(notifier, struct iqs621_als_private,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 				  notifier);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 	indio_dev = iqs621_als->indio_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 	timestamp = iio_get_time_ns(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 	mutex_lock(&iqs621_als->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 	if (event_flags & BIT(IQS62X_EVENT_SYS_RESET)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 		ret = iqs621_als_init(iqs621_als);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 		if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 			dev_err(indio_dev->dev.parent,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 				"Failed to re-initialize device: %d\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 			ret = NOTIFY_BAD;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 		} else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 			ret = NOTIFY_OK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 		goto err_mutex;
^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) 	if (!iqs621_als->light_en && !iqs621_als->range_en &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 	    !iqs621_als->prox_en) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 		ret = NOTIFY_DONE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) 		goto err_mutex;
^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) 	/* IQS621 only */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 	light_new = event_data->als_flags & IQS621_ALS_FLAGS_LIGHT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 	light_old = iqs621_als->als_flags & IQS621_ALS_FLAGS_LIGHT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 	if (iqs621_als->light_en && light_new && !light_old)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 		iio_push_event(indio_dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 			       IIO_UNMOD_EVENT_CODE(IIO_LIGHT, 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 						    IIO_EV_TYPE_THRESH,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 						    IIO_EV_DIR_RISING),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) 			       timestamp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 	else if (iqs621_als->light_en && !light_new && light_old)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 		iio_push_event(indio_dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 			       IIO_UNMOD_EVENT_CODE(IIO_LIGHT, 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 						    IIO_EV_TYPE_THRESH,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) 						    IIO_EV_DIR_FALLING),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) 			       timestamp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 	/* IQS621 and IQS622 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 	range_new = event_data->als_flags & IQS621_ALS_FLAGS_RANGE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 	range_old = iqs621_als->als_flags & IQS621_ALS_FLAGS_RANGE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 	if (iqs621_als->range_en && (range_new > range_old))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 		iio_push_event(indio_dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 			       IIO_UNMOD_EVENT_CODE(IIO_INTENSITY, 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 						    IIO_EV_TYPE_CHANGE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 						    IIO_EV_DIR_RISING),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 			       timestamp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 	else if (iqs621_als->range_en && (range_new < range_old))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 		iio_push_event(indio_dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 			       IIO_UNMOD_EVENT_CODE(IIO_INTENSITY, 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 						    IIO_EV_TYPE_CHANGE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 						    IIO_EV_DIR_FALLING),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 			       timestamp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 	/* IQS622 only */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 	prox_new = event_data->ir_flags & iqs621_als->ir_flags_mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 	prox_old = iqs621_als->ir_flags & iqs621_als->ir_flags_mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 	if (iqs621_als->prox_en && prox_new && !prox_old)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 		iio_push_event(indio_dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 			       IIO_UNMOD_EVENT_CODE(IIO_PROXIMITY, 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 						    IIO_EV_TYPE_THRESH,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 						    IIO_EV_DIR_RISING),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 			       timestamp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 	else if (iqs621_als->prox_en && !prox_new && prox_old)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 		iio_push_event(indio_dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) 			       IIO_UNMOD_EVENT_CODE(IIO_PROXIMITY, 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 						    IIO_EV_TYPE_THRESH,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 						    IIO_EV_DIR_FALLING),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 			       timestamp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 	iqs621_als->als_flags = event_data->als_flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) 	iqs621_als->ir_flags = event_data->ir_flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 	ret = NOTIFY_OK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) err_mutex:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 	mutex_unlock(&iqs621_als->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 	return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) static void iqs621_als_notifier_unregister(void *context)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 	struct iqs621_als_private *iqs621_als = context;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 	struct iio_dev *indio_dev = iqs621_als->indio_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) 	int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) 	ret = blocking_notifier_chain_unregister(&iqs621_als->iqs62x->nh,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 						 &iqs621_als->notifier);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) 	if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 		dev_err(indio_dev->dev.parent,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 			"Failed to unregister notifier: %d\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) static int iqs621_als_read_raw(struct iio_dev *indio_dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 			       struct iio_chan_spec const *chan,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 			       int *val, int *val2, long mask)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 	struct iqs621_als_private *iqs621_als = iio_priv(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) 	struct iqs62x_core *iqs62x = iqs621_als->iqs62x;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) 	int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) 	__le16 val_buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 	switch (chan->type) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 	case IIO_INTENSITY:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) 		ret = regmap_read(iqs62x->regmap, chan->address, val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 		if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 			return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) 		*val &= IQS621_ALS_FLAGS_RANGE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) 		return IIO_VAL_INT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) 	case IIO_PROXIMITY:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) 	case IIO_LIGHT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) 		ret = regmap_raw_read(iqs62x->regmap, chan->address, &val_buf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) 				      sizeof(val_buf));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) 		if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) 			return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) 		*val = le16_to_cpu(val_buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) 		return IIO_VAL_INT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) 	default:
^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) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) static int iqs621_als_read_event_config(struct iio_dev *indio_dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) 					const struct iio_chan_spec *chan,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) 					enum iio_event_type type,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) 					enum iio_event_direction dir)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) 	struct iqs621_als_private *iqs621_als = iio_priv(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) 	int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) 	mutex_lock(&iqs621_als->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) 	switch (chan->type) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) 	case IIO_LIGHT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) 		ret = iqs621_als->light_en;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) 	case IIO_INTENSITY:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) 		ret = iqs621_als->range_en;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) 	case IIO_PROXIMITY:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) 		ret = iqs621_als->prox_en;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) 	default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) 		ret = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) 	mutex_unlock(&iqs621_als->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) 	return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) static int iqs621_als_write_event_config(struct iio_dev *indio_dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) 					 const struct iio_chan_spec *chan,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) 					 enum iio_event_type type,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) 					 enum iio_event_direction dir,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) 					 int state)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) 	struct iqs621_als_private *iqs621_als = iio_priv(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) 	struct iqs62x_core *iqs62x = iqs621_als->iqs62x;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) 	unsigned int val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) 	int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) 	mutex_lock(&iqs621_als->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) 	ret = regmap_read(iqs62x->regmap, iqs62x->dev_desc->als_flags, &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) 	if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) 		goto err_mutex;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) 	iqs621_als->als_flags = val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) 	switch (chan->type) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) 	case IIO_LIGHT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) 		ret = regmap_update_bits(iqs62x->regmap, IQS620_GLBL_EVENT_MASK,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) 					 iqs62x->dev_desc->als_mask,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) 					 iqs621_als->range_en || state ? 0 :
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) 									 0xFF);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) 		if (!ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) 			iqs621_als->light_en = state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) 	case IIO_INTENSITY:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) 		ret = regmap_update_bits(iqs62x->regmap, IQS620_GLBL_EVENT_MASK,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) 					 iqs62x->dev_desc->als_mask,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) 					 iqs621_als->light_en || state ? 0 :
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) 									 0xFF);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) 		if (!ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) 			iqs621_als->range_en = state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) 	case IIO_PROXIMITY:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) 		ret = regmap_read(iqs62x->regmap, IQS622_IR_FLAGS, &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) 		if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) 			goto err_mutex;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) 		iqs621_als->ir_flags = val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) 		ret = regmap_update_bits(iqs62x->regmap, IQS620_GLBL_EVENT_MASK,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) 					 iqs62x->dev_desc->ir_mask,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) 					 state ? 0 : 0xFF);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) 		if (!ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) 			iqs621_als->prox_en = state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) 	default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) 		ret = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) err_mutex:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) 	mutex_unlock(&iqs621_als->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) 	return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) static int iqs621_als_read_event_value(struct iio_dev *indio_dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) 				       const struct iio_chan_spec *chan,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) 				       enum iio_event_type type,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) 				       enum iio_event_direction dir,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) 				       enum iio_event_info info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) 				       int *val, int *val2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) 	struct iqs621_als_private *iqs621_als = iio_priv(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) 	int ret = IIO_VAL_INT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) 	mutex_lock(&iqs621_als->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) 	switch (dir) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) 	case IIO_EV_DIR_RISING:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) 		*val = iqs621_als->thresh_light * 16;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) 	case IIO_EV_DIR_FALLING:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) 		*val = iqs621_als->thresh_dark * 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) 	case IIO_EV_DIR_EITHER:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) 		if (iqs621_als->ir_flags_mask == IQS622_IR_FLAGS_TOUCH)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) 			*val = iqs621_als->thresh_prox * 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) 		else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) 			*val = iqs621_als->thresh_prox;
^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) 	default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) 		ret = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) 	mutex_unlock(&iqs621_als->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) 	return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) static int iqs621_als_write_event_value(struct iio_dev *indio_dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) 					const struct iio_chan_spec *chan,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) 					enum iio_event_type type,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) 					enum iio_event_direction dir,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) 					enum iio_event_info info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) 					int val, int val2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) 	struct iqs621_als_private *iqs621_als = iio_priv(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) 	struct iqs62x_core *iqs62x = iqs621_als->iqs62x;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) 	unsigned int thresh_reg, thresh_val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) 	u8 ir_flags_mask, *thresh_cache;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) 	int ret = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) 	mutex_lock(&iqs621_als->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) 	switch (dir) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) 	case IIO_EV_DIR_RISING:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) 		thresh_reg = IQS621_ALS_THRESH_LIGHT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) 		thresh_val = val / 16;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) 		thresh_cache = &iqs621_als->thresh_light;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) 		ir_flags_mask = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) 	case IIO_EV_DIR_FALLING:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) 		thresh_reg = IQS621_ALS_THRESH_DARK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) 		thresh_val = val / 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) 		thresh_cache = &iqs621_als->thresh_dark;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) 		ir_flags_mask = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) 	case IIO_EV_DIR_EITHER:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) 		/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) 		 * The IQS622 supports two detection thresholds, both measured
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) 		 * in the same arbitrary units reported by read_raw: proximity
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) 		 * (0 through 255 in steps of 1), and touch (0 through 1020 in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) 		 * steps of 4).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) 		 *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) 		 * Based on the single detection threshold chosen by the user,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) 		 * select the hardware threshold that gives the best trade-off
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) 		 * between range and resolution.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) 		 *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) 		 * By default, the close-range (but coarse) touch threshold is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) 		 * chosen during probe.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) 		 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) 		switch (val) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) 		case 0 ... 255:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) 			thresh_reg = IQS622_IR_THRESH_PROX;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) 			thresh_val = val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) 			ir_flags_mask = IQS622_IR_FLAGS_PROX;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) 		case 256 ... 1020:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) 			thresh_reg = IQS622_IR_THRESH_TOUCH;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) 			thresh_val = val / 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) 			ir_flags_mask = IQS622_IR_FLAGS_TOUCH;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) 		default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) 			goto err_mutex;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) 		thresh_cache = &iqs621_als->thresh_prox;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) 	default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) 		goto err_mutex;
^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) 	if (thresh_val > 0xFF)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) 		goto err_mutex;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) 	ret = regmap_write(iqs62x->regmap, thresh_reg, thresh_val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) 	if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) 		goto err_mutex;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) 	*thresh_cache = thresh_val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) 	iqs621_als->ir_flags_mask = ir_flags_mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) err_mutex:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) 	mutex_unlock(&iqs621_als->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) 	return ret;
^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) static const struct iio_info iqs621_als_info = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) 	.read_raw = &iqs621_als_read_raw,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) 	.read_event_config = iqs621_als_read_event_config,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) 	.write_event_config = iqs621_als_write_event_config,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) 	.read_event_value = iqs621_als_read_event_value,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) 	.write_event_value = iqs621_als_write_event_value,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) static const struct iio_event_spec iqs621_als_range_events[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) 	{
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) 		.type = IIO_EV_TYPE_CHANGE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) 		.dir = IIO_EV_DIR_EITHER,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) 		.mask_separate = BIT(IIO_EV_INFO_ENABLE),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) static const struct iio_event_spec iqs621_als_light_events[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) 	{
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) 		.type = IIO_EV_TYPE_THRESH,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) 		.dir = IIO_EV_DIR_EITHER,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) 		.mask_separate = BIT(IIO_EV_INFO_ENABLE),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) 	{
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) 		.type = IIO_EV_TYPE_THRESH,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) 		.dir = IIO_EV_DIR_RISING,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) 		.mask_separate = BIT(IIO_EV_INFO_VALUE),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) 	{
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) 		.type = IIO_EV_TYPE_THRESH,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) 		.dir = IIO_EV_DIR_FALLING,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) 		.mask_separate = BIT(IIO_EV_INFO_VALUE),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) static const struct iio_chan_spec iqs621_als_channels[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) 	{
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) 		.type = IIO_INTENSITY,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) 		.address = IQS621_ALS_FLAGS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) 		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) 		.event_spec = iqs621_als_range_events,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) 		.num_event_specs = ARRAY_SIZE(iqs621_als_range_events),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) 	{
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) 		.type = IIO_LIGHT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) 		.address = IQS621_ALS_UI_OUT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) 		.info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) 		.event_spec = iqs621_als_light_events,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) 		.num_event_specs = ARRAY_SIZE(iqs621_als_light_events),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) static const struct iio_event_spec iqs622_als_prox_events[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) 	{
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) 		.type = IIO_EV_TYPE_THRESH,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) 		.dir = IIO_EV_DIR_EITHER,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) 		.mask_separate = BIT(IIO_EV_INFO_ENABLE) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) 				 BIT(IIO_EV_INFO_VALUE),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) static const struct iio_chan_spec iqs622_als_channels[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) 	{
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) 		.type = IIO_INTENSITY,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) 		.channel2 = IIO_MOD_LIGHT_BOTH,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) 		.address = IQS622_ALS_FLAGS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) 		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) 		.event_spec = iqs621_als_range_events,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) 		.num_event_specs = ARRAY_SIZE(iqs621_als_range_events),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) 		.modified = true,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) 	{
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) 		.type = IIO_INTENSITY,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) 		.channel2 = IIO_MOD_LIGHT_IR,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) 		.address = IQS622_IR_RANGE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) 		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) 		.modified = true,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) 	{
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) 		.type = IIO_PROXIMITY,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) 		.address = IQS622_IR_UI_OUT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) 		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) 		.event_spec = iqs622_als_prox_events,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) 		.num_event_specs = ARRAY_SIZE(iqs622_als_prox_events),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) static int iqs621_als_probe(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) 	struct iqs62x_core *iqs62x = dev_get_drvdata(pdev->dev.parent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) 	struct iqs621_als_private *iqs621_als;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) 	struct iio_dev *indio_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) 	unsigned int val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) 	int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) 	indio_dev = devm_iio_device_alloc(&pdev->dev, sizeof(*iqs621_als));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) 	if (!indio_dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) 		return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) 	iqs621_als = iio_priv(indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) 	iqs621_als->iqs62x = iqs62x;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) 	iqs621_als->indio_dev = indio_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) 	if (iqs62x->dev_desc->prod_num == IQS622_PROD_NUM) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) 		ret = regmap_read(iqs62x->regmap, IQS622_IR_THRESH_TOUCH,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) 				  &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) 		if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) 			return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) 		iqs621_als->thresh_prox = val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) 		iqs621_als->ir_flags_mask = IQS622_IR_FLAGS_TOUCH;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) 		indio_dev->channels = iqs622_als_channels;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) 		indio_dev->num_channels = ARRAY_SIZE(iqs622_als_channels);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) 	} else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) 		ret = regmap_read(iqs62x->regmap, IQS621_ALS_THRESH_LIGHT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) 				  &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) 		if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) 			return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) 		iqs621_als->thresh_light = val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) 		ret = regmap_read(iqs62x->regmap, IQS621_ALS_THRESH_DARK,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) 				  &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) 		if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) 			return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) 		iqs621_als->thresh_dark = val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) 		indio_dev->channels = iqs621_als_channels;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) 		indio_dev->num_channels = ARRAY_SIZE(iqs621_als_channels);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) 	indio_dev->modes = INDIO_DIRECT_MODE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) 	indio_dev->name = iqs62x->dev_desc->dev_name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) 	indio_dev->info = &iqs621_als_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) 	mutex_init(&iqs621_als->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) 	iqs621_als->notifier.notifier_call = iqs621_als_notifier;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) 	ret = blocking_notifier_chain_register(&iqs621_als->iqs62x->nh,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) 					       &iqs621_als->notifier);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) 	if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) 		dev_err(&pdev->dev, "Failed to register notifier: %d\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) 		return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) 	ret = devm_add_action_or_reset(&pdev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) 				       iqs621_als_notifier_unregister,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) 				       iqs621_als);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) 	if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) 		return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) 	return devm_iio_device_register(&pdev->dev, indio_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) static struct platform_driver iqs621_als_platform_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) 	.driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) 		.name = "iqs621-als",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) 	.probe = iqs621_als_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) module_platform_driver(iqs621_als_platform_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) MODULE_AUTHOR("Jeff LaBundy <jeff@labundy.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) MODULE_DESCRIPTION("Azoteq IQS621/622 Ambient Light Sensors");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) MODULE_LICENSE("GPL");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) MODULE_ALIAS("platform:iqs621-als");