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authorAnthony Olech <anthony.olech.opensource@diasemi.com>2013-10-11 15:31:11 +0100
committerMark Brown <broonie@linaro.org>2013-10-14 15:09:16 +0100
commite33fabd365596178e72f62bb4b89f0aaad0509ad (patch)
tree6c0aad1f15bc40d0596cd4678658ad51022029fc /include/linux/regmap.h
parent61e6cfa80de5760bbe406f4e815b7739205754d2 (diff)
downloadop-kernel-dev-e33fabd365596178e72f62bb4b89f0aaad0509ad.zip
op-kernel-dev-e33fabd365596178e72f62bb4b89f0aaad0509ad.tar.gz
regmap: new API regmap_multi_reg_write() definition
New API regmap_multi_reg_write() is defined that allows a set of reg,val pairs to be written to a I2C client device as one block transfer from the point of view of a single I2C master system. A simple demonstration implementation is included that just splits the block write request into a sequence of single register writes. The implementation will be modified later to support those I2C clients that implement the alternative non-standard MULTIWRITE block write mode so to achieve a single I2C transfer that will be atomic even in multiple I2C master systems. Signed-off-by: Anthony Olech <anthony.olech.opensource@diasemi.com> Signed-off-by: David Dajun Chen <david.chen@diasemi.com> Signed-off-by: Mark Brown <broonie@linaro.org>
Diffstat (limited to 'include/linux/regmap.h')
-rw-r--r--include/linux/regmap.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/regmap.h b/include/linux/regmap.h
index a10380b..4b933a3 100644
--- a/include/linux/regmap.h
+++ b/include/linux/regmap.h
@@ -378,6 +378,8 @@ int regmap_raw_write(struct regmap *map, unsigned int reg,
const void *val, size_t val_len);
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, 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);
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