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regmap: add 64-bit mode support

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Since the mmio has support the 64-bit has been supported for the
64-bit platform, so should the regmap core too.

Signed-off-by: Xiubo Li <lixiubo@cmss.chinamobile.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Xiubo Li 2015-12-03 17:31:52 +08:00 committed by Mark Brown
parent 8005c49d9a
commit afcc00b91f
1 changed files with 99 additions and 0 deletions
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99
drivers/base/regmap/regmap.c
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@ -245,6 +245,28 @@ static void regmap_format_32_native(void *buf, unsigned int val,
*(u32 *)buf = val << shift;
}
#ifdef CONFIG_64BIT
static void regmap_format_64_be(void *buf, unsigned int val, unsigned int shift)
{
__be64 *b = buf;
b[0] = cpu_to_be64(val << shift);
}
static void regmap_format_64_le(void *buf, unsigned int val, unsigned int shift)
{
__le64 *b = buf;
b[0] = cpu_to_le64(val << shift);
}
static void regmap_format_64_native(void *buf, unsigned int val,
unsigned int shift)
{
*(u64 *)buf = val << shift;
}
#endif
static void regmap_parse_inplace_noop(void *buf)
{
}
@ -332,6 +354,41 @@ static unsigned int regmap_parse_32_native(const void *buf)
return *(u32 *)buf;
}
#ifdef CONFIG_64BIT
static unsigned int regmap_parse_64_be(const void *buf)
{
const __be64 *b = buf;
return be64_to_cpu(b[0]);
}
static unsigned int regmap_parse_64_le(const void *buf)
{
const __le64 *b = buf;
return le64_to_cpu(b[0]);
}
static void regmap_parse_64_be_inplace(void *buf)
{
__be64 *b = buf;
b[0] = be64_to_cpu(b[0]);
}
static void regmap_parse_64_le_inplace(void *buf)
{
__le64 *b = buf;
b[0] = le64_to_cpu(b[0]);
}
static unsigned int regmap_parse_64_native(const void *buf)
{
return *(u64 *)buf;
}
#endif
static void regmap_lock_mutex(void *__map)
{
struct regmap *map = __map;
@ -712,6 +769,21 @@ struct regmap *__regmap_init(struct device *dev,
}
break;
#ifdef CONFIG_64BIT
case 64:
switch (reg_endian) {
case REGMAP_ENDIAN_BIG:
map->format.format_reg = regmap_format_64_be;
break;
case REGMAP_ENDIAN_NATIVE:
map->format.format_reg = regmap_format_64_native;
break;
default:
goto err_map;
}
break;
#endif
default:
goto err_map;
}
@ -771,6 +843,27 @@ struct regmap *__regmap_init(struct device *dev,
goto err_map;
}
break;
#ifdef CONFIG_64BIT
switch (val_endian) {
case REGMAP_ENDIAN_BIG:
map->format.format_val = regmap_format_64_be;
map->format.parse_val = regmap_parse_64_be;
map->format.parse_inplace = regmap_parse_64_be_inplace;
break;
case REGMAP_ENDIAN_LITTLE:
map->format.format_val = regmap_format_64_le;
map->format.parse_val = regmap_parse_64_le;
map->format.parse_inplace = regmap_parse_64_le_inplace;
break;
case REGMAP_ENDIAN_NATIVE:
map->format.format_val = regmap_format_64_native;
map->format.parse_val = regmap_parse_64_native;
break;
default:
goto err_map;
}
break;
#endif
}
if (map->format.format_write) {
@ -2488,11 +2581,17 @@ int regmap_bulk_read(struct regmap *map, unsigned int reg, void *val,
* we assume that the values are native
* endian.
*/
u64 *u64 = val;
u32 *u32 = val;
u16 *u16 = val;
u8 *u8 = val;
switch (map->format.val_bytes) {
#ifdef CONFIG_64BIT
case 8:
u64[i] = ival;
break;
#endif
case 4:
u32[i] = ival;
break;