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| author | Lars-Peter Clausen <lars@metafoo.de> | 2011-11-16 16:28:21 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2011-11-16 17:34:53 +0000 |
| commit | 7e5ec63ef574775900c82bd98f95bf039f513de3 (patch) | |
| tree | 0631b11d049bcc0445107ace9333c8810dcfdb85 /drivers/base/regmap | |
| parent | 19254411db4e69d90958244c5017e7e4a38547b0 (diff) | |
| download | linux-3.10-7e5ec63ef574775900c82bd98f95bf039f513de3.tar.gz linux-3.10-7e5ec63ef574775900c82bd98f95bf039f513de3.tar.bz2 linux-3.10-7e5ec63ef574775900c82bd98f95bf039f513de3.zip | |
regmap: Add support for 10/14 register formating
This patch adds support for 10 bits register, 14 bits value type register
formating. This is for example used by the Analog Devices AD5380.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'drivers/base/regmap')
| -rw-r--r-- | drivers/base/regmap/regmap.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c index b96cf720286..e533368e559 100644 --- a/drivers/base/regmap/regmap.c +++ b/drivers/base/regmap/regmap.c @@ -90,6 +90,16 @@ static void regmap_format_7_9_write(struct regmap *map, *out = cpu_to_be16((reg << 9) | val); } +static void regmap_format_10_14_write(struct regmap *map, + unsigned int reg, unsigned int val) +{ + u8 *out = map->work_buf; + + out[2] = val; + out[1] = (val >> 8) | (reg << 6); + out[0] = reg >> 2; +} + static void regmap_format_8(void *buf, unsigned int val) { u8 *b = buf; @@ -188,6 +198,16 @@ struct regmap *regmap_init(struct device *dev, } break; + case 10: + switch (config->val_bits) { + case 14: + map->format.format_write = regmap_format_10_14_write; + break; + default: + goto err_map; + } + break; + case 8: map->format.format_reg = regmap_format_8; break; |