linux-kernel - [PATCH v2 4/6] meson saradc: add enum for iio channel array indexes

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Message-ID: <20230623022334.791026-5-gnstark@sberdevices.ru>
Date:   Fri, 23 Jun 2023 05:20:12 +0300
From:   George Stark <gnstark@...rdevices.ru>
To:     <jic23@...nel.org>, <lars@...afoo.de>, <neil.armstrong@...aro.org>,
        <khilman@...libre.com>, <jbrunet@...libre.com>,
        <martin.blumenstingl@...glemail.com>,
        <andriy.shevchenko@...ux.intel.com>, <nuno.sa@...log.com>,
        <gnstark@...rdevices.ru>
CC:     <linux-iio@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>,
        <linux-amlogic@...ts.infradead.org>, <kernel@...rdevices.ru>,
        George Stark <GNStark@...rdevices.ru>
Subject: [PATCH v2 4/6] meson saradc: add enum for iio channel array indexes

Add enum for iio channel array indexes.

Signed-off-by: George Stark <GNStark@...rdevices.ru>
---
 drivers/iio/adc/meson_saradc.c | 34 +++++++++++++++++++++++-----------
 1 file changed, 23 insertions(+), 11 deletions(-)

diff --git a/drivers/iio/adc/meson_saradc.c b/drivers/iio/adc/meson_saradc.c
index ffd4de950a63..7ef006650982 100644
--- a/drivers/iio/adc/meson_saradc.c
+++ b/drivers/iio/adc/meson_saradc.c
@@ -223,16 +223,28 @@ enum meson_sar_adc_chan7_mux_sel {
 	CHAN7_MUX_CH7_INPUT = 0x7,
 };
 
+enum meson_sar_adc_channel_index {
+	INDEX_CHAN_0,
+	INDEX_CHAN_1,
+	INDEX_CHAN_2,
+	INDEX_CHAN_3,
+	INDEX_CHAN_4,
+	INDEX_CHAN_5,
+	INDEX_CHAN_6,
+	INDEX_CHAN_7,
+	INDEX_CHAN_SOFT_TIMESTAMP,
+};
+
 static const struct iio_chan_spec meson_sar_adc_iio_channels[] = {
-	MESON_SAR_ADC_CHAN(0),
-	MESON_SAR_ADC_CHAN(1),
-	MESON_SAR_ADC_CHAN(2),
-	MESON_SAR_ADC_CHAN(3),
-	MESON_SAR_ADC_CHAN(4),
-	MESON_SAR_ADC_CHAN(5),
-	MESON_SAR_ADC_CHAN(6),
-	MESON_SAR_ADC_CHAN(7),
-	IIO_CHAN_SOFT_TIMESTAMP(8),
+	MESON_SAR_ADC_CHAN(INDEX_CHAN_0),
+	MESON_SAR_ADC_CHAN(INDEX_CHAN_1),
+	MESON_SAR_ADC_CHAN(INDEX_CHAN_2),
+	MESON_SAR_ADC_CHAN(INDEX_CHAN_3),
+	MESON_SAR_ADC_CHAN(INDEX_CHAN_4),
+	MESON_SAR_ADC_CHAN(INDEX_CHAN_5),
+	MESON_SAR_ADC_CHAN(INDEX_CHAN_6),
+	MESON_SAR_ADC_CHAN(INDEX_CHAN_7),
+	IIO_CHAN_SOFT_TIMESTAMP(INDEX_CHAN_SOFT_TIMESTAMP),
 	MESON_SAR_ADC_TEMP_CHAN(), /* must be the last item */
 };
 
@@ -1003,7 +1015,7 @@ static int meson_sar_adc_calib(struct iio_dev *indio_dev)
 	meson_sar_adc_set_chan7_mux(indio_dev, CHAN7_MUX_VDD_DIV4);
 	usleep_range(10, 20);
 	ret = meson_sar_adc_get_sample(indio_dev,
-				       &indio_dev->channels[7],
+				       &indio_dev->channels[INDEX_CHAN_7],
 				       MEAN_AVERAGING, EIGHT_SAMPLES, &value0);
 	if (ret < 0)
 		goto out;
@@ -1011,7 +1023,7 @@ static int meson_sar_adc_calib(struct iio_dev *indio_dev)
 	meson_sar_adc_set_chan7_mux(indio_dev, CHAN7_MUX_VDD_MUL3_DIV4);
 	usleep_range(10, 20);
 	ret = meson_sar_adc_get_sample(indio_dev,
-				       &indio_dev->channels[7],
+				       &indio_dev->channels[INDEX_CHAN_7],
 				       MEAN_AVERAGING, EIGHT_SAMPLES, &value1);
 	if (ret < 0)
 		goto out;
-- 
2.38.4