diff --git a/drivers/base/regmap/internal.h b/drivers/base/regmap/internal.h index cc557886ab2377a550c1ae529b6ecee23380161f..4036d7a90f638e92322b01e14b8acd8777ce74d1 100644 --- a/drivers/base/regmap/internal.h +++ b/drivers/base/regmap/internal.h @@ -98,6 +98,9 @@ struct regmap { int (*reg_read)(void *context, unsigned int reg, unsigned int *val); int (*reg_write)(void *context, unsigned int reg, unsigned int val); + int (*reg_update_bits)(void *context, unsigned int reg, + unsigned int mask, unsigned int val, + bool *change, bool force_write); bool defer_caching; diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c index afaf56200674a29517678af763bc9a084659224b..70387c9f281b8456a66167a3fa6898df691b7fe4 100644 --- a/drivers/base/regmap/regmap.c +++ b/drivers/base/regmap/regmap.c @@ -619,6 +619,7 @@ struct regmap *__regmap_init(struct device *dev, goto skip_format_initialization; } else { map->reg_read = _regmap_bus_read; + map->reg_update_bits = bus->reg_update_bits; } reg_endian = regmap_get_reg_endian(bus, config); @@ -2509,6 +2510,30 @@ static int _regmap_update_bits(struct regmap *map, unsigned int reg, int ret; unsigned int tmp, orig; + if (map->reg_update_bits) { + ret = map->reg_update_bits(map->bus_context, reg, mask, val, + change, force_write); + if (ret != 0) + return ret; + + /* Fix up the cache by read/modify/write */ + if (!map->cache_bypass && !map->defer_caching) { + ret = regcache_read(map, reg, &orig); + if (ret != 0) + return ret; + + tmp = orig & ~mask; + tmp |= val & mask; + + ret = regcache_write(map, reg, tmp); + if (ret != 0) + return ret; + if (map->cache_only) + map->cache_dirty = true; + } + return ret; + } + ret = _regmap_read(map, reg, &orig); if (ret != 0) return ret; diff --git a/include/linux/regmap.h b/include/linux/regmap.h index 8fc0bfd8edc4434fc79fda8591323d6be41f0645..4d3a3b1680bb440852c3bae3fb72d5bd6b500f30 100644 --- a/include/linux/regmap.h +++ b/include/linux/regmap.h @@ -296,6 +296,9 @@ typedef int (*regmap_hw_reg_read)(void *context, unsigned int reg, unsigned int *val); typedef int (*regmap_hw_reg_write)(void *context, unsigned int reg, unsigned int val); +typedef int (*regmap_hw_reg_update_bits)(void *context, unsigned int reg, + unsigned int mask, unsigned int val, + bool *change, bool force_write); typedef struct regmap_async *(*regmap_hw_async_alloc)(void); typedef void (*regmap_hw_free_context)(void *context); @@ -335,6 +338,7 @@ struct regmap_bus { regmap_hw_gather_write gather_write; regmap_hw_async_write async_write; regmap_hw_reg_write reg_write; + regmap_hw_reg_update_bits reg_update_bits; regmap_hw_read read; regmap_hw_reg_read reg_read; regmap_hw_free_context free_context;