regmap: Add soundwire bus support

Add soundwire bus support to regmap. This change enables
codec drivers using soundwire hardware interface to use
regmap interface for register read/write functionality.

Signed-off-by: Sudheer Papothi <spapothi@codeaurora.org>

1 files changed, 35 insertions, 1 deletions

diff --git a/include/linux/regmap.h b/include/linux/regmap.h
index d68bb402120e..ab1a11cbfd25 100644
--- a/include/linux/regmap.h
+++ b/include/linux/regmap.h
@@ -29,6 +29,7 @@ struct regmap;
 struct regmap_range_cfg;
 struct regmap_field;
 struct snd_ac97;
+struct swr_device;
 
 /* An enum of all the supported cache types */
 enum regcache_type {
@@ -387,7 +388,10 @@ struct regmap *__regmap_init_ac97(struct snd_ac97 *ac97,
 				  const struct regmap_config *config,
 				  struct lock_class_key *lock_key,
 				  const char *lock_name);
-
+struct regmap *__regmap_init_swr(struct swr_device *dev,
+				 const struct regmap_config *config,
+				 struct lock_class_key *lock_key,
+				 const char *lock_name);
 struct regmap *__devm_regmap_init(struct device *dev,
 				  const struct regmap_bus *bus,
 				  void *bus_context,
@@ -420,6 +424,10 @@ struct regmap *__devm_regmap_init_ac97(struct snd_ac97 *ac97,
 				       const struct regmap_config *config,
 				       struct lock_class_key *lock_key,
 				       const char *lock_name);
+struct regmap *__devm_regmap_init_swr(struct swr_device *dev,
+				      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
@@ -554,6 +562,18 @@ int regmap_attach_dev(struct device *dev, struct regmap *map,
 bool regmap_ac97_default_volatile(struct device *dev, unsigned int reg);
 
 /**
+ * regmap_init_swr(): Initialise register map
+ *
+ * @swr: 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.
+ */
+#define regmap_init_swr(swr, config)					\
+	__regmap_lockdep_wrapper(__regmap_init_swr, #config,		\
+				swr, config)
+/**
  * devm_regmap_init(): Initialise managed register map
  *
  * @dev: Device that will be interacted with
@@ -668,6 +688,20 @@ bool regmap_ac97_default_volatile(struct device *dev, unsigned int reg);
 	__regmap_lockdep_wrapper(__devm_regmap_init_ac97, #config,	\
 				ac97, config)
 
+/**
+ * devm_regmap_init_swr(): Initialise managed register map
+ *
+ * @swr: 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_swr(swr, config)				\
+	__regmap_lockdep_wrapper(__devm_regmap_init_swr, #config,	\
+				swr, config)
+
 void regmap_exit(struct regmap *map);
 int regmap_reinit_cache(struct regmap *map,
 			const struct regmap_config *config);