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regmap: add i3c bus support

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Add basic support for i3c bus.
This is a simple implementation that only give support
for SDR Read and Write commands.

Signed-off-by: Vitor Soares <vitor.soares@synopsys.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Vitor Soares 2019-06-06 17:12:02 +02:00 • committed by Mark Brown
parent a188339ca5
commit 6445500b43
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GPG key ID: 24D68B725D5487D0
4 changed files with 86 additions and 1 deletions
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20
include/linux/regmap.h
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@ -25,6 +25,7 @@ struct module;
struct clk;
struct device;
struct i2c_client;
struct i3c_device;
struct irq_domain;
struct slim_device;
struct spi_device;
@ -624,6 +625,10 @@ struct regmap *__devm_regmap_init_slimbus(struct slim_device *slimbus,
const struct regmap_config *config,
struct lock_class_key *lock_key,
const char *lock_name);
struct regmap *__devm_regmap_init_i3c(struct i3c_device *i3c,
const struct regmap_config *config,
struct lock_class_key *lock_key,
const char *lock_name);
/*
* Wrapper for regmap_init macros to include a unique lockdep key and name
* for each call. No-op if CONFIG_LOCKDEP is not set.
@ -982,6 +987,21 @@ bool regmap_ac97_default_volatile(struct device *dev, unsigned int reg);
#define devm_regmap_init_slimbus(slimbus, config) \
__regmap_lockdep_wrapper(__devm_regmap_init_slimbus, #config, \
slimbus, config)
/**
* devm_regmap_init_i3c() - Initialise managed register map
*
* @i3c: Device that will be interacted with
* @config: Configuration for register map
*
* The return value will be an ERR_PTR() on error or a valid pointer
* to a struct regmap. The regmap will be automatically freed by the
* device management code.
*/
#define devm_regmap_init_i3c(i3c, config) \
__regmap_lockdep_wrapper(__devm_regmap_init_i3c, #config, \
i3c, config)
int regmap_mmio_attach_clk(struct regmap *map, struct clk *clk);
void regmap_mmio_detach_clk(struct regmap *map);
void regmap_exit(struct regmap *map);