Merge tag 'regmap-3.4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap

Pull regmap updates from Mark Brown:
 "Things are really quieting down with the regmap API, while we're still
  seeing a trickle of new features coming in they're getting much
  smaller than they were.  It's also nice to have some features which
  support other subsystems building infrastructure on top of regmap.
  Highlights include:

  - Support for padding between the register and the value when
    interacting with the device, sometimes needed for fast interfaces.
  - Support for applying register updates to the device when restoring
    the register state.  This is intended to be used to apply updates
    supplied by manufacturers for tuning the performance of the device
    (many of which are to undocumented registers which aren't otherwise
    covered).
  - Support for multi-register operations on cached registers.
  - Support for syncing only part of the register cache.
  - Stubs and parameter query functions intended to make it easier for
    other subsystems to build infrastructure on top of the regmap API.

  plus a few driver updates making use of the new features which it was
  easier to merge via this tree."

* tag 'regmap-3.4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap: (41 commits)
  regmap: Fix future missing prototype of devres_alloc() and friends
  regmap: Rejig struct declarations for stubbed API
  regmap: Fix rbtree block base in sync
  regcache: Make sure we sync register 0 in an rbtree cache
  regmap: delete unused module.h from drivers/base/regmap files
  regmap: Add stub for regcache_sync_region()
  mfd: Improve performance of later WM1811 revisions
  regmap: Fix x86_64 breakage
  regmap: Allow drivers to sync only part of the register cache
  regmap: Supply ranges to the sync operations
  regmap: Add tracepoints for cache only and cache bypass
  regmap: Mark the cache as clean after a successful sync
  regmap: Remove default cache sync implementation
  regmap: Skip hardware defaults for LZO caches
  regmap: Expose the driver name in debugfs
  mfd: wm8400: Convert to devm_regmap_init_i2c()
  mfd: wm831x: Convert to devm_regmap_init()
  mfd: wm8994: Convert to devm_regmap_init()
  mfd/ASoC: Convert WM8994 driver to use regmap patches
  mfd: Add __devinit and __devexit annotations in wm8994
  ...

2 files changed, 164 insertions, 0 deletions

diff --git a/include/linux/regmap.h b/include/linux/regmap.h
index c47898d47c8a..5d7e6add0084 100644
--- a/include/linux/regmap.h
+++ b/include/linux/regmap.h
@@ -19,6 +19,7 @@
 struct module;
 struct i2c_client;
 struct spi_device;
+struct regmap;
 
 /* An enum of all the supported cache types */
 enum regcache_type {
@@ -40,10 +41,13 @@ struct reg_default {
         unsigned int def;
 };
 
+#ifdef CONFIG_REGMAP
+
 /**
  * Configuration for the register map of a device.
  *
  * @reg_bits: Number of bits in a register address, mandatory.
+ * @pad_bits: Number of bits of padding between register and value.
  * @val_bits: Number of bits in a register value, mandatory.
  *
  * @writeable_reg: Optional callback returning true if the register
@@ -74,6 +78,7 @@ struct reg_default {
  */
 struct regmap_config {
         int reg_bits;
+        int pad_bits;
         int val_bits;
 
         bool (*writeable_reg)(struct device *dev, unsigned int reg);
@@ -127,12 +132,22 @@ struct regmap *regmap_init_i2c(struct i2c_client *i2c,
 struct regmap *regmap_init_spi(struct spi_device *dev,
                                const struct regmap_config *config);
 
+struct regmap *devm_regmap_init(struct device *dev,
+                                const struct regmap_bus *bus,
+                                const struct regmap_config *config);
+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);
+
 void regmap_exit(struct regmap *map);
 int regmap_reinit_cache(struct regmap *map,
                         const struct regmap_config *config);
 int regmap_write(struct regmap *map, unsigned int reg, unsigned int val);
 int regmap_raw_write(struct regmap *map, unsigned int reg,
                      const void *val, size_t val_len);
+int regmap_bulk_write(struct regmap *map, unsigned int reg, const void *val,
+                        size_t val_count);
 int regmap_read(struct regmap *map, unsigned int reg, unsigned int *val);
 int regmap_raw_read(struct regmap *map, unsigned int reg,
                     void *val, size_t val_len);
@@ -146,6 +161,8 @@ int regmap_update_bits_check(struct regmap *map, unsigned int reg,
 int regmap_get_val_bytes(struct regmap *map);
 
 int regcache_sync(struct regmap *map);
+int regcache_sync_region(struct regmap *map, unsigned int min,
+                         unsigned int max);
 void regcache_cache_only(struct regmap *map, bool enable);
 void regcache_cache_bypass(struct regmap *map, bool enable);
 void regcache_mark_dirty(struct regmap *map);
@@ -201,4 +218,115 @@ int regmap_add_irq_chip(struct regmap *map, int irq, int irq_flags,
 void regmap_del_irq_chip(int irq, struct regmap_irq_chip_data *data);
 int regmap_irq_chip_get_base(struct regmap_irq_chip_data *data);
 
+#else
+
+/*
+ * These stubs should only ever be called by generic code which has
+ * regmap based facilities, if they ever get called at runtime
+ * something is going wrong and something probably needs to select
+ * REGMAP.
+ */
+
+static inline int regmap_write(struct regmap *map, unsigned int reg,
+                               unsigned int val)
+{
+        WARN_ONCE(1, "regmap API is disabled");
+        return -EINVAL;
+}
+
+static inline int regmap_raw_write(struct regmap *map, unsigned int reg,
+                                   const void *val, size_t val_len)
+{
+        WARN_ONCE(1, "regmap API is disabled");
+        return -EINVAL;
+}
+
+static inline int regmap_bulk_write(struct regmap *map, unsigned int reg,
+                                    const void *val, size_t val_count)
+{
+        WARN_ONCE(1, "regmap API is disabled");
+        return -EINVAL;
+}
+
+static inline int regmap_read(struct regmap *map, unsigned int reg,
+                              unsigned int *val)
+{
+        WARN_ONCE(1, "regmap API is disabled");
+        return -EINVAL;
+}
+
+static inline int regmap_raw_read(struct regmap *map, unsigned int reg,
+                                  void *val, size_t val_len)
+{
+        WARN_ONCE(1, "regmap API is disabled");
+        return -EINVAL;
+}
+
+static inline int regmap_bulk_read(struct regmap *map, unsigned int reg,
+                                   void *val, size_t val_count)
+{
+        WARN_ONCE(1, "regmap API is disabled");
+        return -EINVAL;
+}
+
+static inline int regmap_update_bits(struct regmap *map, unsigned int reg,
+                                     unsigned int mask, unsigned int val)
+{
+        WARN_ONCE(1, "regmap API is disabled");
+        return -EINVAL;
+}
+
+static inline int regmap_update_bits_check(struct regmap *map,
+                                           unsigned int reg,
+                                           unsigned int mask, unsigned int val,
+                                           bool *change)
+{
+        WARN_ONCE(1, "regmap API is disabled");
+        return -EINVAL;
+}
+
+static inline int regmap_get_val_bytes(struct regmap *map)
+{
+        WARN_ONCE(1, "regmap API is disabled");
+        return -EINVAL;
+}
+
+static inline int regcache_sync(struct regmap *map)
+{
+        WARN_ONCE(1, "regmap API is disabled");
+        return -EINVAL;
+}
+
+static inline int regcache_sync_region(struct regmap *map, unsigned int min,
+                                       unsigned int max)
+{
+        WARN_ONCE(1, "regmap API is disabled");
+        return -EINVAL;
+}
+
+static inline void regcache_cache_only(struct regmap *map, bool enable)
+{
+        WARN_ONCE(1, "regmap API is disabled");
+}
+
+static inline void regcache_cache_bypass(struct regmap *map, bool enable)
+{
+        WARN_ONCE(1, "regmap API is disabled");
+}
+
+static inline void regcache_mark_dirty(struct regmap *map)
+{
+        WARN_ONCE(1, "regmap API is disabled");
+}
+
+static inline int regmap_register_patch(struct regmap *map,
+                                        const struct reg_default *regs,
+                                        int num_regs)
+{
+        WARN_ONCE(1, "regmap API is disabled");
+        return -EINVAL;
+}
+
+#endif
+
 #endif
diff --git a/include/trace/events/regmap.h b/include/trace/events/regmap.h
index 12fbf43524e9..d69738280ffa 100644
--- a/include/trace/events/regmap.h
+++ b/include/trace/events/regmap.h
@@ -139,6 +139,42 @@ TRACE_EVENT(regcache_sync,
                   __get_str(type), __get_str(status))
 );
 
+DECLARE_EVENT_CLASS(regmap_bool,
+
+        TP_PROTO(struct device *dev, bool flag),
+
+        TP_ARGS(dev, flag),
+
+        TP_STRUCT__entry(
+                __string(       name,           dev_name(dev)   )
+                __field(        int,            flag            )
+        ),
+
+        TP_fast_assign(
+                __assign_str(name, dev_name(dev));
+                __entry->flag = flag;
+        ),
+
+        TP_printk("%s flag=%d", __get_str(name),
+                  (int)__entry->flag)
+);
+
+DEFINE_EVENT(regmap_bool, regmap_cache_only,
+
+        TP_PROTO(struct device *dev, bool flag),
+
+        TP_ARGS(dev, flag)
+
+);
+
+DEFINE_EVENT(regmap_bool, regmap_cache_bypass,
+
+        TP_PROTO(struct device *dev, bool flag),
+
+        TP_ARGS(dev, flag)
+
+);
+
 #endif /* _TRACE_REGMAP_H */
 
 /* This part must be outside protection */