[PATCH 5.4 297/411] iio: adc: sc27xx: fix read big scale voltage not right

Greg Kroah-Hartman
2022-06-13T11:36:27Z

From: Cixi Geng <cixi.geng1@unisoc.com>

[ Upstream commit ad930a75613282400179361e220e58b87386b8c7 ]

Fix wrong configuration value of SC27XX_ADC_SCALE_MASK and
SC27XX_ADC_SCALE_SHIFT by spec documetation.

Fixes: 5df362a6cf49c (iio: adc: Add Spreadtrum SC27XX PMICs ADC support)
Signed-off-by: Cixi Geng <cixi.geng1@unisoc.com>
Reviewed-by: Baolin Wang <baolin.wang7@gmail.com>
Link: https://lore.kernel.org/r/20220419142458.884933-3-gengcixi@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/iio/adc/sc27xx_adc.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/iio/adc/sc27xx_adc.c b/drivers/iio/adc/sc27xx_adc.c
index a6c046575ec3..dcc01cdcff3f 100644
--- a/drivers/iio/adc/sc27xx_adc.c
+++ b/drivers/iio/adc/sc27xx_adc.c
@@ -36,8 +36,8 @@

/* Bits and mask definition for SC27XX_ADC_CH_CFG register */
#define SC27XX_ADC_CHN_ID_MASK GENMASK(4, 0)
-#define SC27XX_ADC_SCALE_MASK GENMASK(10, 8)
-#define SC27XX_ADC_SCALE_SHIFT 8
+#define SC27XX_ADC_SCALE_MASK GENMASK(10, 9)
+#define SC27XX_ADC_SCALE_SHIFT 9

/* Bits definitions for SC27XX_ADC_INT_EN registers */
#define SC27XX_ADC_IRQ_EN BIT(0)
--
2.35.1