diff options
| author | Marc Reilly <marc@cpdesign.com.au> | 2012-03-16 12:11:42 +1100 |
|---|---|---|
| committer | Simone Willett <swillett@nvidia.com> | 2012-04-15 14:01:37 -0700 |
| commit | 13e02a6fe4d6a67423f1ac6acb470a28773bcfa5 (patch) | |
| tree | 11769c8fa9d35e25e505862eb9a9badba10d24c9 /drivers/base | |
| parent | 444264a5219523b112929d523918c25469cf695c (diff) | |
regmap: Add support for device with 24 data bits.
Add support for devices with 24 data bits.
Signed-off-by: Marc Reilly <marc@cpdesign.com.au>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
(cherry picked from commit ea279fc5619e2541a0c28196b0fa06447d9ad026)
Change-Id: I69ccd494eb8622c442d55294c24ecd6acd78cfcb
Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Reviewed-on: http://git-master/r/96498
Reviewed-by: Simone Willett <swillett@nvidia.com>
Tested-by: Simone Willett <swillett@nvidia.com>
Diffstat (limited to 'drivers/base')
| -rw-r--r-- | drivers/base/regmap/regmap.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c index 9a3cf9e34f8c..a98048314dca 100644 --- a/drivers/base/regmap/regmap.c +++ b/drivers/base/regmap/regmap.c @@ -126,6 +126,15 @@ static void regmap_format_16(void *buf, unsigned int val) b[0] = cpu_to_be16(val); } +static void regmap_format_24(void *buf, unsigned int val) +{ + u8 *b = buf; + + b[0] = val >> 16; + b[1] = val >> 8; + b[2] = val; +} + static void regmap_format_32(void *buf, unsigned int val) { __be32 *b = buf; @@ -149,6 +158,16 @@ static unsigned int regmap_parse_16(void *buf) return b[0]; } +static unsigned int regmap_parse_24(void *buf) +{ + u8 *b = buf; + unsigned int ret = b[2]; + ret |= ((unsigned int)b[1]) << 8; + ret |= ((unsigned int)b[0]) << 16; + + return ret; +} + static unsigned int regmap_parse_32(void *buf) { __be32 *b = buf; @@ -273,6 +292,10 @@ struct regmap *regmap_init(struct device *dev, map->format.format_val = regmap_format_16; map->format.parse_val = regmap_parse_16; break; + case 24: + map->format.format_val = regmap_format_24; + map->format.parse_val = regmap_parse_24; + break; case 32: map->format.format_val = regmap_format_32; map->format.parse_val = regmap_parse_32; |