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regmap: Add bypassed version of regmap_multi_reg_write

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Devices with more complex boot proceedures may occasionally apply the
register patch manual. regmap_multi_reg_write is a logical way to do so,
however the patch must be applied with cache bypass on, such that it
doesn't override any user settings. This patch adds a
regmap_multi_reg_write_bypassed function that applies a set of writes
with the bypass enabled.

Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
This commit is contained in:
Charles Keepax
2014-02-25 13:45:50 +00:00
committed by Mark Brown
parent f7e2cec02b
commit 1d5b40bccf
2 changed files with 65 additions and 13 deletions
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3
include/linux/regmap.h
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@@ -388,6 +388,9 @@ int regmap_bulk_write(struct regmap *map, unsigned int reg, const void *val,
size_t val_count);
int regmap_multi_reg_write(struct regmap *map, const struct reg_default *regs,
int num_regs);
int regmap_multi_reg_write_bypassed(struct regmap *map,
const struct reg_default *regs,
int num_regs);
int regmap_raw_write_async(struct regmap *map, unsigned int reg,
const void *val, size_t val_len);
int regmap_read(struct regmap *map, unsigned int reg, unsigned int *val);