diff options
| author | Stephen Warren <swarren@nvidia.com> | 2012-04-04 15:48:31 -0600 |
|---|---|---|
| committer | Simone Willett <swillett@nvidia.com> | 2012-04-15 14:23:47 -0700 |
| commit | d1e4558e1f325b10e06ef754fd789dbb8f6fd17e (patch) | |
| tree | a8e163d45d6fdab60e926e5cb8ef8ced6446aca7 /include/linux | |
| parent | 77a38d8012fd6603e25eb3aa7a012856ab0a6ae8 (diff) | |
regmap: add MMIO bus support
This is a basic memory-mapped-IO bus for regmap. It has the following
features and limitations:
* Registers themselves may be 8, 16, 32, or 64-bit. 64-bit is only
supported on 64-bit platforms.
* Register offsets are limited to precisely 32-bit.
* IO is performed using readl/writel, with no provision for using the
__raw_readl or readl_relaxed variants.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
(cherry picked from commit 45f5ff8107a845854b1d1812ab1d9c5541f08b4d)
Change-Id: Ia84cf3fec838ee687e5b77ce771fc2450abe8436
Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Reviewed-on: http://git-master/r/96504
Reviewed-by: Simone Willett <swillett@nvidia.com>
Tested-by: Simone Willett <swillett@nvidia.com>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/regmap.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/regmap.h b/include/linux/regmap.h index 5c2058126f48..4c52c35b682c 100644 --- a/include/linux/regmap.h +++ b/include/linux/regmap.h @@ -134,6 +134,9 @@ struct regmap *regmap_init_i2c(struct i2c_client *i2c, const struct regmap_config *config); struct regmap *regmap_init_spi(struct spi_device *dev, const struct regmap_config *config); +struct regmap *regmap_init_mmio(struct device *dev, + void __iomem *regs, + const struct regmap_config *config); struct regmap *devm_regmap_init(struct device *dev, const struct regmap_bus *bus, @@ -143,6 +146,9 @@ struct regmap *devm_regmap_init_i2c(struct i2c_client *i2c, const struct regmap_config *config); struct regmap *devm_regmap_init_spi(struct spi_device *dev, const struct regmap_config *config); +struct regmap *devm_regmap_init_mmio(struct device *dev, + void __iomem *regs, + const struct regmap_config *config); void regmap_exit(struct regmap *map); int regmap_reinit_cache(struct regmap *map, |