linux-kernel - [PATCH 2/7] iio: adc: sun4i-gpadc: introduce temp_data in gpadc

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Date:   Fri,  3 May 2019 03:28:08 -0400
From:   Yangtao Li <tiny.windzz@...il.com>
To:     lee.jones@...aro.org, robh+dt@...nel.org, mark.rutland@....com,
        maxime.ripard@...tlin.com, wens@...e.org, jic23@...nel.org,
        knaack.h@....de, lars@...afoo.de, pmeerw@...erw.net
Cc:     devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, linux-iio@...r.kernel.org,
        Yangtao Li <tiny.windzz@...il.com>
Subject: [PATCH 2/7] iio: adc: sun4i-gpadc: introduce temp_data in gpadc_data

For some SOCs, the temperature data register start address may be
different, so introduce temp_data in gpadc_data.

Also modify read temperature to support multiple sensor.

Signed-off-by: Yangtao Li <tiny.windzz@...il.com>
---
 drivers/iio/adc/sun4i-gpadc-iio.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/iio/adc/sun4i-gpadc-iio.c b/drivers/iio/adc/sun4i-gpadc-iio.c
index 844fd52bd22f..b41ec0d5964d 100644
--- a/drivers/iio/adc/sun4i-gpadc-iio.c
+++ b/drivers/iio/adc/sun4i-gpadc-iio.c
@@ -57,6 +57,7 @@ struct gpadc_data {
 	unsigned int	(*adc_chan_select)(unsigned int chan);
 	unsigned int	adc_chan_mask;
 	unsigned int    sensor_count;
+	unsigned int    temp_data_base;
 };
 
 static const struct gpadc_data sun4i_gpadc_data = {
@@ -67,6 +68,7 @@ static const struct gpadc_data sun4i_gpadc_data = {
 	.adc_chan_select = &sun4i_gpadc_chan_select,
 	.adc_chan_mask = SUN4I_GPADC_CTRL1_ADC_CHAN_MASK,
 	.sensor_count = 1,
+	.temp_data_base = SUN4I_GPADC_TEMP_DATA,
 };
 
 static const struct gpadc_data sun5i_gpadc_data = {
@@ -77,6 +79,7 @@ static const struct gpadc_data sun5i_gpadc_data = {
 	.adc_chan_select = &sun4i_gpadc_chan_select,
 	.adc_chan_mask = SUN4I_GPADC_CTRL1_ADC_CHAN_MASK,
 	.sensor_count = 1,
+	.temp_data_base = SUN4I_GPADC_TEMP_DATA,
 };
 
 static const struct gpadc_data sun6i_gpadc_data = {
@@ -87,6 +90,7 @@ static const struct gpadc_data sun6i_gpadc_data = {
 	.adc_chan_select = &sun6i_gpadc_chan_select,
 	.adc_chan_mask = SUN6I_GPADC_CTRL1_ADC_CHAN_MASK,
 	.sensor_count = 1,
+	.temp_data_base = SUN4I_GPADC_TEMP_DATA,
 };
 
 static const struct gpadc_data sun8i_a33_gpadc_data = {
@@ -94,6 +98,7 @@ static const struct gpadc_data sun8i_a33_gpadc_data = {
 	.temp_scale = 162,
 	.tp_mode_en = SUN8I_GPADC_CTRL1_CHOP_TEMP_EN,
 	.sensor_count = 1,
+	.temp_data_base = SUN4I_GPADC_TEMP_DATA,
 };
 
 struct sun4i_sensor_tzd {
@@ -291,7 +296,8 @@ static int sun4i_gpadc_temp_read(struct iio_dev *indio_dev, int *val,
 	if (info->no_irq) {
 		pm_runtime_get_sync(indio_dev->dev.parent);
 
-		regmap_read(info->regmap, SUN4I_GPADC_TEMP_DATA, val);
+		regmap_read(info->regmap, info->data->temp_data_base +
+			    0x4 * sensor, val);
 
 		pm_runtime_mark_last_busy(indio_dev->dev.parent);
 		pm_runtime_put_autosuspend(indio_dev->dev.parent);
-- 
2.17.1