[PATCH v1 1/3] regmap: Revert "add 64-bit mode support" and Co.

Andy Shevchenko
2023-06-22T18:36:24Z

With unsigned int type we never ever can pass 64-bit value.
Remove never properly worked code.

Note, there are no users in kernel for this size of register
offsets or data.

This reverts commit afcc00b91f1865f6d0bbdb687dd642ce8a3c3c9e.

Also revert other 64-bit code excerpts in the regmap implementation
that had been induced by the false impression made by the above
mentioned change that there is a support of that data size.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
drivers/base/regmap/regmap.c | 122 -----------------------------------
1 file changed, 122 deletions(-)

diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c
index 89a7f1c459c1..8b37451fa931 100644
--- a/drivers/base/regmap/regmap.c
+++ b/drivers/base/regmap/regmap.c
@@ -311,26 +311,6 @@ static void regmap_format_32_native(void *buf, unsigned int val,
memcpy(buf, &v, sizeof(v));
}

-#ifdef CONFIG_64BIT
-static void regmap_format_64_be(void *buf, unsigned int val, unsigned int shift)
-{
- put_unaligned_be64((u64) val << shift, buf);
-}
-
-static void regmap_format_64_le(void *buf, unsigned int val, unsigned int shift)
-{
- put_unaligned_le64((u64) val << shift, buf);
-}
-
-static void regmap_format_64_native(void *buf, unsigned int val,
- unsigned int shift)
-{
- u64 v = (u64) val << shift;
-
- memcpy(buf, &v, sizeof(v));
-}
-#endif
-
static void regmap_parse_inplace_noop(void *buf)
{
}
@@ -411,40 +391,6 @@ static unsigned int regmap_parse_32_native(const void *buf)
return v;
}

-#ifdef CONFIG_64BIT
-static unsigned int regmap_parse_64_be(const void *buf)
-{
- return get_unaligned_be64(buf);
-}
-
-static unsigned int regmap_parse_64_le(const void *buf)
-{
- return get_unaligned_le64(buf);
-}
-
-static void regmap_parse_64_be_inplace(void *buf)
-{
- u64 v = get_unaligned_be64(buf);
-
- memcpy(buf, &v, sizeof(v));
-}
-
-static void regmap_parse_64_le_inplace(void *buf)
-{
- u64 v = get_unaligned_le64(buf);
-
- memcpy(buf, &v, sizeof(v));
-}
-
-static unsigned int regmap_parse_64_native(const void *buf)
-{
- u64 v;
-
- memcpy(&v, buf, sizeof(v));
- return v;
-}
-#endif
-
static void regmap_lock_hwlock(void *__map)
{
struct regmap *map = __map;
@@ -1005,24 +951,6 @@ 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_LITTLE:
- map->format.format_reg = regmap_format_64_le;
- break;
- case REGMAP_ENDIAN_NATIVE:
- map->format.format_reg = regmap_format_64_native;
- break;
- default:
- goto err_hwlock;
- }
- break;
-#endif
-
default:
goto err_hwlock;
}
@@ -1086,28 +1014,6 @@ struct regmap *__regmap_init(struct device *dev,
goto err_hwlock;
}
break;
-#ifdef CONFIG_64BIT
- case 64:
- 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_hwlock;
- }
- break;
-#endif
}

if (map->format.format_write) {
@@ -2160,9 +2066,6 @@ static int regmap_noinc_readwrite(struct regmap *map, unsigned int reg,
u8 *u8p;
u16 *u16p;
u32 *u32p;
-#ifdef CONFIG_64BIT
- u64 *u64p;
-#endif
int ret;
int i;

@@ -2182,13 +2085,6 @@ static int regmap_noinc_readwrite(struct regmap *map, unsigned int reg,
if (write)
lastval = (unsigned int)u32p[val_count - 1];
break;
-#ifdef CONFIG_64BIT
- case 8:
- u64p = val;
- if (write)
- lastval = (unsigned int)u64p[val_count - 1];
- break;
-#endif
default:
return -EINVAL;
}
@@ -2226,11 +2122,6 @@ static int regmap_noinc_readwrite(struct regmap *map, unsigned int reg,
case 4:
pr_cont("%x", u32p[i]);
break;
-#ifdef CONFIG_64BIT
- case 8:
- pr_cont("%llx", u64p[i]);
- break;
-#endif
default:
break;
}
@@ -2438,11 +2329,6 @@ int regmap_bulk_write(struct regmap *map, unsigned int reg, const void *val,
case 4:
ival = *(u32 *)(val + (i * val_bytes));
break;
-#ifdef CONFIG_64BIT
- case 8:
- ival = *(u64 *)(val + (i * val_bytes));
- break;
-#endif
default:
ret = -EINVAL;
goto out;
@@ -3207,9 +3093,6 @@ 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_inplace(val + i);
} else {
-#ifdef CONFIG_64BIT
- u64 *u64 = val;
-#endif
u32 *u32 = val;
u16 *u16 = val;
u8 *u8 = val;
@@ -3225,11 +3108,6 @@ int regmap_bulk_read(struct regmap *map, unsigned int reg, void *val,
goto out;

switch (map->format.val_bytes) {
-#ifdef CONFIG_64BIT
- case 8:
- u64[i] = ival;
- break;
-#endif
case 4:
u32[i] = ival;
break;
--
2.40.0.1.gaa8946217a0b