diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/core/regmap.c | 64 |
1 files changed, 57 insertions, 7 deletions
diff --git a/drivers/core/regmap.c b/drivers/core/regmap.c index 154426269d9..916d9272ea0 100644 --- a/drivers/core/regmap.c +++ b/drivers/core/regmap.c @@ -188,22 +188,72 @@ int regmap_uninit(struct regmap *map) return 0; } +int regmap_raw_read(struct regmap *map, uint offset, void *valp, size_t val_len) +{ + void *ptr; + + ptr = map_physmem(map->ranges[0].start + offset, val_len, MAP_NOCACHE); + + switch (val_len) { + case REGMAP_SIZE_8: + *((u8 *)valp) = readb((u8 *)ptr); + break; + case REGMAP_SIZE_16: + *((u16 *)valp) = readw((u16 *)ptr); + break; + case REGMAP_SIZE_32: + *((u32 *)valp) = readl((u32 *)ptr); + break; +#if defined(readq) + case REGMAP_SIZE_64: + *((u64 *)valp) = readq((u64 *)ptr); + break; +#endif + default: + debug("%s: regmap size %zu unknown\n", __func__, val_len); + return -EINVAL; + } + return 0; +} + int regmap_read(struct regmap *map, uint offset, uint *valp) { - u32 *ptr = map_physmem(map->ranges[0].start + offset, 4, MAP_NOCACHE); + return regmap_raw_read(map, offset, valp, REGMAP_SIZE_32); +} - *valp = le32_to_cpu(readl(ptr)); +int regmap_raw_write(struct regmap *map, uint offset, const void *val, + size_t val_len) +{ + void *ptr; + + ptr = map_physmem(map->ranges[0].start + offset, val_len, MAP_NOCACHE); + + switch (val_len) { + case REGMAP_SIZE_8: + writeb(*((u8 *)val), (u8 *)ptr); + break; + case REGMAP_SIZE_16: + writew(*((u16 *)val), (u16 *)ptr); + break; + case REGMAP_SIZE_32: + writel(*((u32 *)val), (u32 *)ptr); + break; +#if defined(writeq) + case REGMAP_SIZE_64: + writeq(*((u64 *)val), (u64 *)ptr); + break; +#endif + default: + debug("%s: regmap size %zu unknown\n", __func__, val_len); + return -EINVAL; + } return 0; } int regmap_write(struct regmap *map, uint offset, uint val) { - u32 *ptr = map_physmem(map->ranges[0].start + offset, 4, MAP_NOCACHE); - - writel(cpu_to_le32(val), ptr); - - return 0; + return regmap_raw_write(map, offset, &val, REGMAP_SIZE_32); } int regmap_update_bits(struct regmap *map, uint offset, uint mask, uint val) |