[PATCH 3/3] staging: iio: ad7780: generates pattern_mask from PAT bits

[Giuliano Belinassi]

Previously, all pattern_masks in the chip_info table were hardcoded. Now they
are generated using the PAT macros, as described in the datasheets.

Signed-off-by: Giuliano Belinassi <giuliano.belina...@usp.br>
---
 drivers/staging/iio/adc/ad7780.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/drivers/staging/iio/adc/ad7780.c b/drivers/staging/iio/adc/ad7780.c
index 0a473aae52f2..fa9e047b5191 100644
--- a/drivers/staging/iio/adc/ad7780.c
+++ b/drivers/staging/iio/adc/ad7780.c
@@ -31,6 +31,8 @@
 #define AD7780_PAT1    BIT(1)
 #define AD7780_PAT0    BIT(0)
 
+#define AD7170_PAT2    BIT(2)
+
 struct ad7780_chip_info {
        struct iio_chan_spec    channel;
        unsigned int            pattern_mask;
@@ -137,25 +139,25 @@ static const struct ad7780_chip_info 
ad7780_chip_info_tbl[] = {
        [ID_AD7170] = {
                .channel = AD7780_CHANNEL(12, 24),
                .pattern = 0x5,
-               .pattern_mask = 0x7,
+               .pattern_mask = AD7780_PAT0 | AD7780_PAT1 | AD7170_PAT2,
                .is_ad778x = false,
        },
        [ID_AD7171] = {
                .channel = AD7780_CHANNEL(16, 24),
                .pattern = 0x5,
-               .pattern_mask = 0x7,
+               .pattern_mask = AD7780_PAT0 | AD7780_PAT1 | AD7170_PAT2,
                .is_ad778x = false,
        },
        [ID_AD7780] = {
                .channel = AD7780_CHANNEL(24, 32),
                .pattern = 0x1,
-               .pattern_mask = 0x3,
+               .pattern_mask = AD7780_PAT0 | AD7780_PAT1,
                .is_ad778x = true,
        },
        [ID_AD7781] = {
                .channel = AD7780_CHANNEL(20, 32),
                .pattern = 0x1,
-               .pattern_mask = 0x3,
+               .pattern_mask = AD7780_PAT0 | AD7780_PAT1,
                .is_ad778x = true,
        },
 };
-- 
2.19.1

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