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| author | Mario Six <mario.six@gdsys.cc> | 2018-10-15 09:24:11 +0200 |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2018-11-14 09:16:27 -0800 |
| commit | d5c7bd985d759b7aade2700c11890821e6187e4b (patch) | |
| tree | 1ae2265b0c770b50524fb4e0655d74a866c24422 /include/regmap.h | |
| parent | 84ff8f622d2e2aeb67c1cec1c2c814895648fca8 (diff) | |
| download | u-boot-d5c7bd985d759b7aade2700c11890821e6187e4b.zip u-boot-d5c7bd985d759b7aade2700c11890821e6187e4b.tar.gz u-boot-d5c7bd985d759b7aade2700c11890821e6187e4b.tar.bz2 | |
regmap: Support reading from specific range
It is useful to be able to treat the different ranges of a regmap
separately to be able to use distinct offset for them, but this is
currently not implemented in the regmap API.
To preserve backwards compatibility, add regmap_read_range and
regmap_write_range functions that take an additional parameter
'range_num' that identifies the range to operate on.
Reviewed-by: Anatolij Gustschin <agust@denx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Mario Six <mario.six@gdsys.cc>
Diffstat (limited to 'include/regmap.h')
| -rw-r--r-- | include/regmap.h | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/include/regmap.h b/include/regmap.h index f23664e..eba300d 100644 --- a/include/regmap.h +++ b/include/regmap.h @@ -115,6 +115,37 @@ int regmap_raw_write(struct regmap *map, uint offset, const void *val, int regmap_raw_read(struct regmap *map, uint offset, void *valp, size_t val_len); +/** + * regmap_raw_write_range() - Write a value of specified length to a range of a + * regmap + * + * @map: Regmap to write to + * @range_num: Number of the range in the regmap to write to + * @offset: Offset in the regmap to write to + * @val: Value to write to the regmap at the specified offset + * @val_len: Length of the data to be written to the regmap + * + * Return: 0 if OK, -ve on error + */ +int regmap_raw_write_range(struct regmap *map, uint range_num, uint offset, + const void *val, size_t val_len); + +/** + * regmap_raw_read_range() - Read a value of specified length from a range of a + * regmap + * + * @map: Regmap to read from + * @range_num: Number of the range in the regmap to write to + * @offset: Offset in the regmap to read from + * @valp: Pointer to the buffer to receive the data read from the regmap + * at the specified offset + * @val_len: Length of the data to be read from the regmap + * + * Return: 0 if OK, -ve on error + */ +int regmap_raw_read_range(struct regmap *map, uint range_num, uint offset, + void *valp, size_t val_len); + #define regmap_write32(map, ptr, member, val) \ regmap_write(map, (uint32_t *)(ptr)->member - (uint32_t *)(ptr), val) |