diff options
author | Stephen Warren <swarren@nvidia.com> | 2012-04-04 15:48:30 -0600 |
---|---|---|
committer | Simone Willett <swillett@nvidia.com> | 2012-04-15 14:12:19 -0700 |
commit | d5a70b9a3304ef71b0a0ba97a9933c579b1fa6b0 (patch) | |
tree | 1c94fb3df65799a62dae4a542699b9ed3213efe6 /include | |
parent | 88deb440c6cea0709f3118d9727d925b632612a3 (diff) |
regmap: introduce explicit bus_context for bus callbacks
The only context needed by I2C and SPI bus definitions is the device
itself; this can be converted to an i2c_client or spi_device in order
to perform IO on the device. However, other bus types may need more
context in order to perform IO. Enable this by having regmap_init accept
a bus_context parameter, and pass this to all bus callbacks. The
existing callbacks simply pass the struct device here. Future bus types
may pass something else.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
(cherry picked from commit 0135bbcc7a0cc056f0203ff839466236b8e3dc19)
Change-Id: I36b3fb3433af6e6f1e673fc6c73ba21f7eb4d054
Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Reviewed-on: http://git-master/r/96502
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Stephen Warren <swarren@nvidia.com>
Diffstat (limited to 'include')
-rw-r--r-- | include/linux/regmap.h | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/include/linux/regmap.h b/include/linux/regmap.h index eb0a600fccd2..e3ed73658e12 100644 --- a/include/linux/regmap.h +++ b/include/linux/regmap.h @@ -94,14 +94,15 @@ struct regmap_config { u8 write_flag_mask; }; -typedef int (*regmap_hw_write)(struct device *dev, const void *data, +typedef int (*regmap_hw_write)(void *context, const void *data, size_t count); -typedef int (*regmap_hw_gather_write)(struct device *dev, +typedef int (*regmap_hw_gather_write)(void *context, const void *reg, size_t reg_len, const void *val, size_t val_len); -typedef int (*regmap_hw_read)(struct device *dev, +typedef int (*regmap_hw_read)(void *context, const void *reg_buf, size_t reg_size, void *val_buf, size_t val_size); +typedef void (*regmap_hw_free_context)(void *context); /** * Description of a hardware bus for the register map infrastructure. @@ -118,11 +119,13 @@ struct regmap_bus { regmap_hw_write write; regmap_hw_gather_write gather_write; regmap_hw_read read; + regmap_hw_free_context free_context; u8 read_flag_mask; }; struct regmap *regmap_init(struct device *dev, const struct regmap_bus *bus, + void *bus_context, const struct regmap_config *config); struct regmap *regmap_init_i2c(struct i2c_client *i2c, const struct regmap_config *config); @@ -131,6 +134,7 @@ struct regmap *regmap_init_spi(struct spi_device *dev, struct regmap *devm_regmap_init(struct device *dev, const struct regmap_bus *bus, + void *bus_context, const struct regmap_config *config); struct regmap *devm_regmap_init_i2c(struct i2c_client *i2c, const struct regmap_config *config); |