struct i2c_client;
struct spi_device;
+/* An enum of all the supported cache types */
+enum regcache_type {
+ REGCACHE_NONE,
+ REGCACHE_INDEXED,
+ REGCACHE_RBTREE,
+ REGCACHE_LZO
+};
+
/**
* Default value for a register. We use an array of structs rather
* than a simple array as many modern devices have very sparse
* @write_flag_mask: Mask to be set in the top byte 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.
+ *
+ * @cache_type: The actual cache type.
+ * @reg_defaults_raw: Power on reset values for registers (for use with
+ * register cache support).
+ * @num_reg_defaults_raw: Number of elements in reg_defaults_raw.
*/
struct regmap_config {
int reg_bits;
unsigned int max_register;
struct reg_default *reg_defaults;
- int num_reg_defaults;
+ unsigned int num_reg_defaults;
+ enum regcache_type cache_type;
+ const void *reg_defaults_raw;
+ unsigned int num_reg_defaults_raw;
u8 read_flag_mask;
u8 write_flag_mask;
/**
* Description of a hardware bus for the register map infrastructure.
*
- * @list: Internal use.
- * @type: Bus type, used to identify bus to be used for a device.
* @write: Write operation.
* @gather_write: Write operation with split register/value, return -ENOTSUPP
* if not implemented on a given device.
* @read: Read operation. Data is returned in the buffer used to transmit
* data.
- * @owner: Module with the bus implementation, used to pin the implementation
- * in memory.
* @read_flag_mask: Mask to be set in the top byte of the register when doing
* a read.
*/
struct regmap_bus {
- struct list_head list;
- struct bus_type *type;
regmap_hw_write write;
regmap_hw_gather_write gather_write;
regmap_hw_read read;
- struct module *owner;
u8 read_flag_mask;
};
int regmap_update_bits(struct regmap *map, unsigned int reg,
unsigned int mask, unsigned int val);
+int regcache_sync(struct regmap *map);
+void regcache_cache_only(struct regmap *map, bool enable);
+void regcache_cache_bypass(struct regmap *map, bool enable);
+
#endif