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2024-05-10 37f49e37ab4cb5d0bc4c60eb5c6d4dd57db767bb

 kernel/drivers/iio/health/afe4404.c
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@@ -1,17 +1,9 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  * AFE4404 Heart Rate Monitors and Low-Cost Pulse Oximeters
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  *
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- * Copyright (C) 2015-2016 Texas Instruments Incorporated - http://www.ti.com/
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+ * Copyright (C) 2015-2016 Texas Instruments Incorporated - https://www.ti.com/
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  *	Andrew F. Davis <afd@ti.com>
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- *
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- * This program is free software; you can redistribute it and/or modify
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- * it under the terms of the GNU General Public License version 2 as
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- * published by the Free Software Foundation.
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- *
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- * This program is distributed in the hope that it will be useful, but
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- * WITHOUT ANY WARRANTY; without even the implied warranty of
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- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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- * General Public License for more details.
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  */
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 #include <linux/device.h>
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@@ -258,20 +250,20 @@
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 			    int *val, int *val2, long mask)
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 {
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 	struct afe4404_data *afe = iio_priv(indio_dev);
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-	unsigned int value_reg = afe4404_channel_values[chan->address];
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-	unsigned int led_field = afe4404_channel_leds[chan->address];
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-	unsigned int offdac_field = afe4404_channel_offdacs[chan->address];
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+	unsigned int value_reg, led_field, offdac_field;
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 	int ret;
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 	switch (chan->type) {
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 	case IIO_INTENSITY:
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 		switch (mask) {
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 		case IIO_CHAN_INFO_RAW:
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+			value_reg = afe4404_channel_values[chan->address];
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 			ret = regmap_read(afe->regmap, value_reg, val);
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 			if (ret)
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 				return ret;
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 			return IIO_VAL_INT;
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 		case IIO_CHAN_INFO_OFFSET:
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+			offdac_field = afe4404_channel_offdacs[chan->address];
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 			ret = regmap_field_read(afe->fields[offdac_field], val);
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 			if (ret)
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 				return ret;
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@@ -281,6 +273,7 @@
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 	case IIO_CURRENT:
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 		switch (mask) {
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 		case IIO_CHAN_INFO_RAW:
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+			led_field = afe4404_channel_leds[chan->address];
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 			ret = regmap_field_read(afe->fields[led_field], val);
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 			if (ret)
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 				return ret;
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@@ -303,19 +296,20 @@
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 			     int val, int val2, long mask)
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 {
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 	struct afe4404_data *afe = iio_priv(indio_dev);
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-	unsigned int led_field = afe4404_channel_leds[chan->address];
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-	unsigned int offdac_field = afe4404_channel_offdacs[chan->address];
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+	unsigned int led_field, offdac_field;
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 	switch (chan->type) {
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 	case IIO_INTENSITY:
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 		switch (mask) {
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 		case IIO_CHAN_INFO_OFFSET:
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+			offdac_field = afe4404_channel_offdacs[chan->address];
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 			return regmap_field_write(afe->fields[offdac_field], val);
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 		}
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 		break;
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 	case IIO_CURRENT:
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 		switch (mask) {
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 		case IIO_CHAN_INFO_RAW:
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+			led_field = afe4404_channel_leds[chan->address];
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 			return regmap_field_write(afe->fields[led_field], val);
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 		}
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 		break;
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@@ -527,7 +521,6 @@
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 	}
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 	indio_dev->modes = INDIO_DIRECT_MODE;
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-	indio_dev->dev.parent = afe->dev;
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 	indio_dev->channels = afe4404_channels;
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 	indio_dev->num_channels = ARRAY_SIZE(afe4404_channels);
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 	indio_dev->name = AFE4404_DRIVER_NAME;