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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>
This commit is contained in:
Lars-Peter Clausen 2011-11-16 16:28:21 +01:00 committed by Mark Brown
parent 19254411db
commit 7e5ec63ef5
1 changed files with 20 additions and 0 deletions
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20
drivers/base/regmap/regmap.c
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@ -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;