diff options
Diffstat (limited to 'drivers/base/regmap')
| -rw-r--r-- | drivers/base/regmap/internal.h | 3 | ||||
| -rw-r--r-- | drivers/base/regmap/regmap.c | 52 |
2 files changed, 38 insertions, 17 deletions
diff --git a/drivers/base/regmap/internal.h b/drivers/base/regmap/internal.h index 582d7fdf414b..2b5851d42dbb 100644 --- a/drivers/base/regmap/internal.h +++ b/drivers/base/regmap/internal.h @@ -38,7 +38,8 @@ struct regmap_format { unsigned int reg, unsigned int val); void (*format_reg)(void *buf, unsigned int reg, unsigned int shift); void (*format_val)(void *buf, unsigned int val, unsigned int shift); - unsigned int (*parse_val)(void *buf); + unsigned int (*parse_val)(const void *buf); + void (*parse_inplace)(void *buf); }; struct regmap_async { diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c index 3d2367501fd0..aff5a8b73947 100644 --- a/drivers/base/regmap/regmap.c +++ b/drivers/base/regmap/regmap.c @@ -228,30 +228,39 @@ static void regmap_format_32_native(void *buf, unsigned int val, *(u32 *)buf = val << shift; } -static unsigned int regmap_parse_8(void *buf) +static void regmap_parse_inplace_noop(void *buf) { - u8 *b = buf; +} + +static unsigned int regmap_parse_8(const void *buf) +{ + const u8 *b = buf; return b[0]; } -static unsigned int regmap_parse_16_be(void *buf) +static unsigned int regmap_parse_16_be(const void *buf) +{ + const __be16 *b = buf; + + return be16_to_cpu(b[0]); +} + +static void regmap_parse_16_be_inplace(void *buf) { __be16 *b = buf; b[0] = be16_to_cpu(b[0]); - - return b[0]; } -static unsigned int regmap_parse_16_native(void *buf) +static unsigned int regmap_parse_16_native(const void *buf) { return *(u16 *)buf; } -static unsigned int regmap_parse_24(void *buf) +static unsigned int regmap_parse_24(const void *buf) { - u8 *b = buf; + const u8 *b = buf; unsigned int ret = b[2]; ret |= ((unsigned int)b[1]) << 8; ret |= ((unsigned int)b[0]) << 16; @@ -259,16 +268,21 @@ static unsigned int regmap_parse_24(void *buf) return ret; } -static unsigned int regmap_parse_32_be(void *buf) +static unsigned int regmap_parse_32_be(const void *buf) +{ + const __be32 *b = buf; + + return be32_to_cpu(b[0]); +} + +static void regmap_parse_32_be_inplace(void *buf) { __be32 *b = buf; b[0] = be32_to_cpu(b[0]); - - return b[0]; } -static unsigned int regmap_parse_32_native(void *buf) +static unsigned int regmap_parse_32_native(const void *buf) { return *(u32 *)buf; } @@ -555,16 +569,21 @@ struct regmap *regmap_init(struct device *dev, goto err_map; } + if (val_endian == REGMAP_ENDIAN_NATIVE) + map->format.parse_inplace = regmap_parse_inplace_noop; + switch (config->val_bits) { case 8: map->format.format_val = regmap_format_8; map->format.parse_val = regmap_parse_8; + map->format.parse_inplace = regmap_parse_inplace_noop; break; case 16: switch (val_endian) { case REGMAP_ENDIAN_BIG: map->format.format_val = regmap_format_16_be; map->format.parse_val = regmap_parse_16_be; + map->format.parse_inplace = regmap_parse_16_be_inplace; break; case REGMAP_ENDIAN_NATIVE: map->format.format_val = regmap_format_16_native; @@ -585,6 +604,7 @@ struct regmap *regmap_init(struct device *dev, case REGMAP_ENDIAN_BIG: map->format.format_val = regmap_format_32_be; map->format.parse_val = regmap_parse_32_be; + map->format.parse_inplace = regmap_parse_32_be_inplace; break; case REGMAP_ENDIAN_NATIVE: map->format.format_val = regmap_format_32_native; @@ -1240,7 +1260,7 @@ int regmap_bulk_write(struct regmap *map, unsigned int reg, const void *val, if (!map->bus) return -EINVAL; - if (!map->format.parse_val) + if (!map->format.parse_inplace) return -EINVAL; if (reg % map->reg_stride) return -EINVAL; @@ -1258,7 +1278,7 @@ int regmap_bulk_write(struct regmap *map, unsigned int reg, const void *val, goto out; } for (i = 0; i < val_count * val_bytes; i += val_bytes) - map->format.parse_val(wval + i); + map->format.parse_inplace(wval + i); } /* * Some devices does not support bulk write, for @@ -1519,7 +1539,7 @@ int regmap_bulk_read(struct regmap *map, unsigned int reg, void *val, if (!map->bus) return -EINVAL; - if (!map->format.parse_val) + if (!map->format.parse_inplace) return -EINVAL; if (reg % map->reg_stride) return -EINVAL; @@ -1546,7 +1566,7 @@ int regmap_bulk_read(struct regmap *map, unsigned int reg, void *val, } for (i = 0; i < val_count * val_bytes; i += val_bytes) - map->format.parse_val(val + i); + map->format.parse_inplace(val + i); } else { for (i = 0; i < val_count; i++) { unsigned int ival; |