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authorStephen Warren <swarren@nvidia.com>2012-04-05 01:48:31 +0400
committerMark Brown <broonie@opensource.wolfsonmicro.com>2012-04-06 13:47:35 +0400
commit45f5ff8107a845854b1d1812ab1d9c5541f08b4d (patch)
treed0d532ba060e3f3db9c7e376d90d1fcb34035c04 /include/linux/regmap.h
parentbacdbe077342ecc9e7b3e374cc5a41995116706a (diff)
downloadlinux-45f5ff8107a845854b1d1812ab1d9c5541f08b4d.tar.xz
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>
Diffstat (limited to 'include/linux/regmap.h')
-rw-r--r--include/linux/regmap.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/regmap.h b/include/linux/regmap.h
index f14588a96eaf..f6abc8d33d64 100644
--- a/include/linux/regmap.h
+++ b/include/linux/regmap.h
@@ -137,6 +137,9 @@ 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,
@@ -146,6 +149,9 @@ 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,