1 // SPDX-License-Identifier: GPL-2.0-or-later
3  * APDS9160 sensor driver.
4  * Chip is combined proximity and ambient light sensor.
5  * Author: 2024 Mikael Gonella-Bolduc <m.gonella.bolduc@gmail.com>
62 /* Light sensor registers */
198 		/* Proximity sensor channel */
211 		/* Proximity sensor led current */
242 		/* Proximity sensor channel */
253 		/* Proximity sensor led current */
337  * struct apds9160_scale - apds9160 scale mapping definition
340  * @gain: Gain multiplier
346 	int gain;  member
355 		.gain = 1,
361 		.gain = 3,
367 		.gain = 6,
373 		.gain = 18,
379 		.gain = 54,
385 		.gain = 1,
391 		.gain = 3,
397 		.gain = 6,
403 		.gain = 18,
409 		.gain = 54,
415 		.gain = 1,
421 		.gain = 3,
427 		.gain = 6,
433 		.gain = 18,
439 		.gain = 54,
445 		.gain = 1,
451 		.gain = 3,
457 		.gain = 6,
463 		.gain = 18,
469 		.gain = 54,
587 		ret = regmap_field_write(data->reg_ps_rate,  in apds9160_set_ps_rate()
591 		data->ps_rate = val;  in apds9160_set_ps_rate()
596 	return -EINVAL;  in apds9160_set_ps_rate()
609 		ret = regmap_field_write(data->reg_ps_gain,  in apds9160_set_ps_gain()
613 		data->ps_gain = val;  in apds9160_set_ps_gain()
618 	return -EINVAL;  in apds9160_set_ps_gain()
623  * for an on-chip substraction of the ADC count caused by
633 		return -EINVAL;  in apds9160_set_ps_cancellation_level()
636 	ret = regmap_bulk_write(data->regmap, APDS9160_REG_PS_CAN_LEVEL_DIG_LSB,  in apds9160_set_ps_cancellation_level()
641 	data->ps_cancellation_level = val;  in apds9160_set_ps_cancellation_level()
657 		return -EINVAL;  in apds9160_set_ps_analog_cancellation()
659 	return regmap_write(data->regmap, APDS9160_REG_PS_CAN_LEVEL_ANA_DUR,  in apds9160_set_ps_analog_cancellation()
676 		return -EINVAL;  in apds9160_set_ps_cancellation_current()
679 		return -EINVAL;  in apds9160_set_ps_cancellation_current()
684 	return regmap_write(data->regmap, APDS9160_REG_PS_CAN_LEVEL_ANA_CURRENT,  in apds9160_set_ps_cancellation_current()
694 			"ps-cancellation-duration", &duration);  in apds9160_ps_init_analog_cancellation()
701 			"ps-cancellation-current-picoamp", &picoamp);  in apds9160_ps_init_analog_cancellation()
706 		return dev_err_probe(dev, -EINVAL,  in apds9160_ps_init_analog_cancellation()
745 				data->reg_ps_current,  in apds9160_set_ps_current()
749 		data->ps_current = val;  in apds9160_set_ps_current()
754 	return -EINVAL;  in apds9160_set_ps_current()
757 static int apds9160_set_als_gain(struct apds9160_chip *data, int gain)  in apds9160_set_als_gain()  argument
764 		if (gain != apds9160_als_gain_map[idx][0])  in apds9160_set_als_gain()
767 		ret = regmap_field_write(data->reg_als_gain,  in apds9160_set_als_gain()
771 		data->als_hwgain = gain;  in apds9160_set_als_gain()
776 	return -EINVAL;  in apds9160_set_als_gain()
784 		if (apds9160_als_scale_map[idx].itime == data->als_itime &&  in apds9160_set_als_scale()
788 					apds9160_als_scale_map[idx].gain);  in apds9160_set_als_scale()
791 			data->als_scale1 = val;  in apds9160_set_als_scale()
792 			data->als_scale2 = val2;  in apds9160_set_als_scale()
798 	return -EINVAL;  in apds9160_set_als_scale()
805 		return regmap_field_write(data->reg_als_resolution,  in apds9160_set_als_resolution()
808 		return regmap_field_write(data->reg_als_resolution,  in apds9160_set_als_resolution()
811 		return regmap_field_write(data->reg_als_resolution,  in apds9160_set_als_resolution()
814 		return regmap_field_write(data->reg_als_resolution,  in apds9160_set_als_resolution()
827 		return regmap_field_write(data->reg_als_rate,  in apds9160_set_als_rate()
831 	return -EINVAL;  in apds9160_set_als_rate()
835  * Setting the integration time ajusts resolution, rate, scale and gain
851 	data->als_itime = val;  in apds9160_set_als_int_time()
853 	/* Set the scale minimum gain */  in apds9160_set_als_int_time()
855 		if (data->als_itime != apds9160_als_scale_map[idx].itime)  in apds9160_set_als_int_time()
863 	return -EINVAL;  in apds9160_set_als_int_time()
875 		switch (chan->type) {  in apds9160_read_avail()
889 			return -EINVAL;  in apds9160_read_avail()
892 		switch (chan->type) {  in apds9160_read_avail()
901 			switch (data->als_itime) {  in apds9160_read_avail()
927 				return -EINVAL;  in apds9160_read_avail()
930 			return -EINVAL;  in apds9160_read_avail()
933 		switch (chan->type) {  in apds9160_read_avail()
941 			return -EINVAL;  in apds9160_read_avail()
945 		return -EINVAL;  in apds9160_read_avail()
965 		return -EINVAL;  in apds9160_write_raw_get_fmt()
978 		switch (chan->type) {  in apds9160_read_raw()
982 			ret = regmap_bulk_read(data->regmap, chan->address,  in apds9160_read_raw()
996 			ret = regmap_bulk_read(data->regmap, chan->address,  in apds9160_read_raw()
1005 			*val = data->ps_current;  in apds9160_read_raw()
1009 			return -EINVAL;  in apds9160_read_raw()
1012 		switch (chan->type) {  in apds9160_read_raw()
1014 			*val = data->als_hwgain;  in apds9160_read_raw()
1018 			return -EINVAL;  in apds9160_read_raw()
1021 		switch (chan->type) {  in apds9160_read_raw()
1023 			*val = data->ps_rate;  in apds9160_read_raw()
1027 			*val = data->als_itime;  in apds9160_read_raw()
1031 			return -EINVAL;  in apds9160_read_raw()
1034 		switch (chan->type) {  in apds9160_read_raw()
1036 			*val = data->ps_cancellation_level;  in apds9160_read_raw()
1040 			return -EINVAL;  in apds9160_read_raw()
1043 		switch (chan->type) {  in apds9160_read_raw()
1045 			*val = data->ps_gain;  in apds9160_read_raw()
1049 			*val = data->als_scale1;  in apds9160_read_raw()
1050 			*val2 = data->als_scale2;  in apds9160_read_raw()
1054 			return -EINVAL;  in apds9160_read_raw()
1057 		return -EINVAL;  in apds9160_read_raw()
1067 	guard(mutex)(&data->lock);  in apds9160_write_raw()
1072 			return -EINVAL;  in apds9160_write_raw()
1073 		switch (chan->type) {  in apds9160_write_raw()
1079 			return -EINVAL;  in apds9160_write_raw()
1082 		switch (chan->type) {  in apds9160_write_raw()
1088 			return -EINVAL;  in apds9160_write_raw()
1092 			return -EINVAL;  in apds9160_write_raw()
1093 		switch (chan->type) {  in apds9160_write_raw()
1097 			return -EINVAL;  in apds9160_write_raw()
1101 			return -EINVAL;  in apds9160_write_raw()
1102 		switch (chan->type) {  in apds9160_write_raw()
1106 			return -EINVAL;  in apds9160_write_raw()
1109 		return -EINVAL;  in apds9160_write_raw()
1118 		switch (chan->type) {  in apds9160_get_thres_reg()
1126 			return -EINVAL;  in apds9160_get_thres_reg()
1129 		switch (chan->type) {  in apds9160_get_thres_reg()
1137 			return -EINVAL;  in apds9160_get_thres_reg()
1141 		return -EINVAL;  in apds9160_get_thres_reg()
1158 		return -EINVAL;  in apds9160_read_event()
1164 	switch (chan->type) {  in apds9160_read_event()
1168 		ret = regmap_bulk_read(data->regmap, reg, &buf, 2);  in apds9160_read_event()
1177 		ret = regmap_bulk_read(data->regmap, reg, &buf, 3);  in apds9160_read_event()
1184 		return -EINVAL;  in apds9160_read_event()
1199 		return -EINVAL;  in apds9160_write_event()
1205 	switch (chan->type) {  in apds9160_write_event()
1210 			return -EINVAL;  in apds9160_write_event()
1213 		return regmap_bulk_write(data->regmap, reg, &buf, 2);  in apds9160_write_event()
1219 			return -EINVAL;  in apds9160_write_event()
1222 		return regmap_bulk_write(data->regmap, reg, &buf, 3);  in apds9160_write_event()
1225 		return -EINVAL;  in apds9160_write_event()
1236 	switch (chan->type) {  in apds9160_read_event_config()
1238 		return data->ps_int;  in apds9160_read_event_config()
1240 		return data->als_int;  in apds9160_read_event_config()
1242 		return -EINVAL;  in apds9160_read_event_config()
1254 	switch (chan->type) {  in apds9160_write_event_config()
1256 		ret = regmap_field_write(data->reg_int_ps, state);  in apds9160_write_event_config()
1259 		data->ps_int = state;  in apds9160_write_event_config()
1263 		ret = regmap_field_write(data->reg_int_als, state);  in apds9160_write_event_config()
1266 		data->als_int = state;  in apds9160_write_event_config()
1270 		return -EINVAL;  in apds9160_write_event_config()
1281 	ret = regmap_read(data->regmap, APDS9160_REG_SR, &status);  in apds9160_irq_handler()
1283 		dev_err_ratelimited(&data->client->dev,  in apds9160_irq_handler()
1289 	    (status & APDS9160_SR_LS_NEW_DATA) && data->als_int) {  in apds9160_irq_handler()
1298 	    (status & APDS9160_SR_PS_NEW_DATA) && data->ps_int) {  in apds9160_irq_handler()
1311 	struct i2c_client *client = chip->client;  in apds9160_detect()
1315 	ret = regmap_read(chip->regmap, APDS9160_REG_ID, &val);  in apds9160_detect()
1317 		dev_err(&client->dev, "ID read failed\n");  in apds9160_detect()
1322 		dev_info(&client->dev, "Unknown part id %u\n", val);  in apds9160_detect()
1332 	ret = regmap_field_write(data->reg_enable_als, 0);  in apds9160_disable()
1336 	regmap_field_write(data->reg_enable_ps, 0);  in apds9160_disable()
1344 	ret = regmap_field_write(chip->reg_int_ps, 0);  in apds9160_chip_init()
1345 	chip->ps_int = 0;  in apds9160_chip_init()
1349 	ret = regmap_field_write(chip->reg_int_als, 0);  in apds9160_chip_init()
1350 	chip->als_int = 0;  in apds9160_chip_init()
1355 	ret = regmap_field_write(chip->reg_enable_als, 1);  in apds9160_chip_init()
1359 	ret = regmap_field_write(chip->reg_enable_ps, 1);  in apds9160_chip_init()
1364 	ret = regmap_field_write(chip->reg_ps_resolution,  in apds9160_chip_init()
1402 	return devm_add_action_or_reset(&chip->client->dev, apds9160_disable,  in apds9160_chip_init()
1408 	struct device *dev = &data->client->dev;  in apds9160_regfield_init()
1409 	struct regmap *regmap = data->regmap;  in apds9160_regfield_init()
1415 	data->reg_int_als = tmp;  in apds9160_regfield_init()
1420 	data->reg_int_ps = tmp;  in apds9160_regfield_init()
1425 	data->reg_enable_als = tmp;  in apds9160_regfield_init()
1430 	data->reg_enable_ps = tmp;  in apds9160_regfield_init()
1436 	data->reg_ps_overflow = tmp;  in apds9160_regfield_init()
1441 	data->reg_als_rate = tmp;  in apds9160_regfield_init()
1446 	data->reg_als_resolution = tmp;  in apds9160_regfield_init()
1451 	data->reg_ps_rate = tmp;  in apds9160_regfield_init()
1456 	data->reg_als_gain = tmp;  in apds9160_regfield_init()
1462 	data->reg_ps_current = tmp;  in apds9160_regfield_init()
1467 	data->reg_ps_gain = tmp;  in apds9160_regfield_init()
1473 	data->reg_ps_resolution = tmp;  in apds9160_regfield_init()
1498 	struct device *dev = &client->dev;  in apds9160_probe()
1505 		return -ENOMEM;  in apds9160_probe()
1511 	indio_dev->name = "apds9160";  in apds9160_probe()
1512 	indio_dev->modes = INDIO_DIRECT_MODE;  in apds9160_probe()
1515 	chip->client = client;  in apds9160_probe()
1516 	chip->regmap = devm_regmap_init_i2c(client, &apds9160_regmap_config);  in apds9160_probe()
1517 	if (IS_ERR(chip->regmap))  in apds9160_probe()
1518 		return dev_err_probe(dev, PTR_ERR(chip->regmap),  in apds9160_probe()
1521 	chip->client = client;  in apds9160_probe()
1522 	mutex_init(&chip->lock);  in apds9160_probe()
1540 	if (client->irq > 0) {  in apds9160_probe()
1541 		indio_dev->info = &apds9160_info;  in apds9160_probe()
1542 		indio_dev->channels = apds9160_channels;  in apds9160_probe()
1543 		indio_dev->num_channels = ARRAY_SIZE(apds9160_channels);  in apds9160_probe()
1544 		ret = devm_request_threaded_irq(dev, client->irq, NULL,  in apds9160_probe()
1551 					     client->irq);  in apds9160_probe()
1554 		indio_dev->info = &apds9160_info_no_events;  in apds9160_probe()
1555 		indio_dev->channels = apds9160_channels_without_events;  in apds9160_probe()
1556 		indio_dev->num_channels =  in apds9160_probe()
1590 MODULE_DESCRIPTION("APDS9160 combined ALS and proximity sensor");
1591 MODULE_AUTHOR("Mikael Gonella-Bolduc <m.gonella.bolduc@gmail.com>");