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staging: iio: ad7780: generates pattern_mask from PAT bits

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Previously, all pattern_masks and patterns 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.belinassi@usp.br>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Giuliano Belinassi 2018-11-08 11:03:40 -02:00 committed by Jonathan Cameron
parent 23da6a1511
commit c036a324c0
1 changed files with 24 additions and 16 deletions
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40
drivers/staging/iio/adc/ad7780.c
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@ -22,14 +22,22 @@
#include <linux/iio/sysfs.h>
#include <linux/iio/adc/ad_sigma_delta.h>
#define AD7780_RDY BIT(7)
#define AD7780_FILTER BIT(6)
#define AD7780_ERR BIT(5)
#define AD7780_ID1 BIT(4)
#define AD7780_ID0 BIT(3)
#define AD7780_GAIN BIT(2)
#define AD7780_PAT1 BIT(1)
#define AD7780_PAT0 BIT(0)
#define AD7780_RDY BIT(7)
#define AD7780_FILTER BIT(6)
#define AD7780_ERR BIT(5)
#define AD7780_ID1 BIT(4)
#define AD7780_ID0 BIT(3)
#define AD7780_GAIN BIT(2)
#define AD7780_PAT1 BIT(1)
#define AD7780_PAT0 BIT(0)
#define AD7780_PATTERN (AD7780_PAT0)
#define AD7780_PATTERN_MASK (AD7780_PAT0 | AD7780_PAT1)
#define AD7170_PAT2 BIT(2)
#define AD7170_PATTERN (AD7780_PAT0 | AD7170_PAT2)
#define AD7170_PATTERN_MASK (AD7780_PAT0 | AD7780_PAT1 | AD7170_PAT2)
struct ad7780_chip_info {
struct iio_chan_spec channel;
@ -136,26 +144,26 @@ static const struct ad_sigma_delta_info ad7780_sigma_delta_info = {
static const struct ad7780_chip_info ad7780_chip_info_tbl[] = {
[ID_AD7170] = {
.channel = AD7780_CHANNEL(12, 24),
.pattern = 0x5,
.pattern_mask = 0x7,
.pattern = AD7170_PATTERN,
.pattern_mask = AD7170_PATTERN_MASK,
.is_ad778x = false,
},
[ID_AD7171] = {
.channel = AD7780_CHANNEL(16, 24),
.pattern = 0x5,
.pattern_mask = 0x7,
.pattern = AD7170_PATTERN,
.pattern_mask = AD7170_PATTERN_MASK,
.is_ad778x = false,
},
[ID_AD7780] = {
.channel = AD7780_CHANNEL(24, 32),
.pattern = 0x1,
.pattern_mask = 0x3,
.pattern = AD7780_PATTERN,
.pattern_mask = AD7780_PATTERN_MASK,
.is_ad778x = true,
},
[ID_AD7781] = {
.channel = AD7780_CHANNEL(20, 32),
.pattern = 0x1,
.pattern_mask = 0x3,
.pattern = AD7780_PATTERN,
.pattern_mask = AD7780_PATTERN_MASK,
.is_ad778x = true,
},
};