regmap: Add bypassed version of regmap_multi_reg_write

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>

1 files changed, 3 insertions, 0 deletions

diff --git a/include/linux/regmap.h b/include/linux/regmap.h
index e97ac6c8b7be..ca2272fbd014 100644
--- a/include/linux/regmap.h
+++ b/include/linux/regmap.h
@@ -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);