1 files changed, 67 insertions, 1 deletions

diff --git a/include/linux/regmap.h b/include/linux/regmap.h
index 15eddc1353ba..6a3aeba40e9e 100644
--- a/include/linux/regmap.h
+++ b/include/linux/regmap.h
@@ -24,12 +24,14 @@ struct module;
 struct device;
 struct i2c_client;
 struct irq_domain;
+struct slim_device;
 struct spi_device;
 struct spmi_device;
 struct regmap;
 struct regmap_range_cfg;
 struct regmap_field;
 struct snd_ac97;
+struct sdw_slave;
 
 /* An enum of all the supported cache types */
 enum regcache_type {
@@ -264,6 +266,9 @@ typedef void (*regmap_unlock)(void *);
  *                field is NULL but precious_table (see below) is not, the
  *                check is performed on such table (a register is precious if
  *                it belongs to one of the ranges specified by precious_table).
+ * @disable_locking: This regmap is either protected by external means or
+ *                   is guaranteed not be be accessed from multiple threads.
+ *                   Don't use any locking mechanisms.
  * @lock:         Optional lock callback (overrides regmap's default lock
  *                function, based on spinlock or mutex).
  * @unlock:       As above for unlocking.
@@ -296,7 +301,10 @@ typedef void (*regmap_unlock)(void *);
  *                  a read.
  * @write_flag_mask: Mask to be set in the top bytes of the register when doing
  *                   a write. If both read_flag_mask and write_flag_mask are
- *                   empty the regmap_bus default masks are used.
+ *                   empty and zero_flag_mask is not set the regmap_bus default
+ *                   masks are used.
+ * @zero_flag_mask: If set, read_flag_mask and write_flag_mask are used even
+ *                   if they are both empty.
  * @use_single_rw: If set, converts the bulk read and write operations into
  *                  a series of single read and write operations. This is useful
  *                  for device that does not support bulk read and write.
@@ -317,6 +325,7 @@ typedef void (*regmap_unlock)(void *);
  *
  * @ranges: Array of configuration entries for virtual address ranges.
  * @num_ranges: Number of range configuration entries.
+ * @use_hwlock: Indicate if a hardware spinlock should be used.
  * @hwlock_id: Specify the hardware spinlock id.
  * @hwlock_mode: The hardware spinlock mode, should be HWLOCK_IRQSTATE,
  *               HWLOCK_IRQ or 0.
@@ -333,6 +342,8 @@ struct regmap_config {
         bool (*readable_reg)(struct device *dev, unsigned int reg);
         bool (*volatile_reg)(struct device *dev, unsigned int reg);
         bool (*precious_reg)(struct device *dev, unsigned int reg);
+
+        bool disable_locking;
         regmap_lock lock;
         regmap_unlock unlock;
         void *lock_arg;
@@ -355,6 +366,7 @@ struct regmap_config {
 
         unsigned long read_flag_mask;
         unsigned long write_flag_mask;
+        bool zero_flag_mask;
 
         bool use_single_rw;
         bool can_multi_write;
@@ -365,6 +377,7 @@ struct regmap_config {
         const struct regmap_range_cfg *ranges;
         unsigned int num_ranges;
 
+        bool use_hwlock;
         unsigned int hwlock_id;
         unsigned int hwlock_mode;
 };
@@ -499,6 +512,10 @@ struct regmap *__regmap_init_i2c(struct i2c_client *i2c,
                                  const struct regmap_config *config,
                                  struct lock_class_key *lock_key,
                                  const char *lock_name);
+struct regmap *__regmap_init_slimbus(struct slim_device *slimbus,
+                                 const struct regmap_config *config,
+                                 struct lock_class_key *lock_key,
+                                 const char *lock_name);
 struct regmap *__regmap_init_spi(struct spi_device *dev,
                                  const struct regmap_config *config,
                                  struct lock_class_key *lock_key,
@@ -524,6 +541,10 @@ 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_sdw(struct sdw_slave *sdw,
+                                 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,
@@ -561,6 +582,10 @@ 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_sdw(struct sdw_slave *sdw,
+                                 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
@@ -616,6 +641,19 @@ int regmap_attach_dev(struct device *dev, struct regmap *map,
                                 i2c, config)
 
 /**
+ * regmap_init_slimbus() - Initialise register map
+ *
+ * @slimbus: 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_slimbus(slimbus, config)                            \
+        __regmap_lockdep_wrapper(__regmap_init_slimbus, #config,        \
+                                slimbus, config)
+
+/**
  * regmap_init_spi() - Initialise register map
  *
  * @dev: Device that will be interacted with
@@ -710,6 +748,20 @@ int regmap_attach_dev(struct device *dev, struct regmap *map,
 bool regmap_ac97_default_volatile(struct device *dev, unsigned int reg);
 
 /**
+ * regmap_init_sdw() - Initialise register map
+ *
+ * @sdw: 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_sdw(sdw, config)                                    \
+        __regmap_lockdep_wrapper(__regmap_init_sdw, #config,            \
+                                sdw, config)
+
+
+/**
  * devm_regmap_init() - Initialise managed register map
  *
  * @dev: Device that will be interacted with
@@ -839,6 +891,20 @@ bool regmap_ac97_default_volatile(struct device *dev, unsigned int reg);
         __regmap_lockdep_wrapper(__devm_regmap_init_ac97, #config,      \
                                 ac97, config)
 
+/**
+ * devm_regmap_init_sdw() - Initialise managed register map
+ *
+ * @sdw: 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_sdw(sdw, config)                               \
+        __regmap_lockdep_wrapper(__devm_regmap_init_sdw, #config,       \
+                                sdw, config)
+
 void regmap_exit(struct regmap *map);
 int regmap_reinit_cache(struct regmap *map,
                         const struct regmap_config *config);