The patch
regmap: add 64-bit mode support
has been applied to the regmap tree at
git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap.git
All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.
You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.
If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.
Please add any relevant lists and maintainers to the CCs when replying
to this mail.
Thanks,
Mark
>From afcc00b91f1865f6d0bbdb687dd642ce8a3c3c9e Mon Sep 17 00:00:00 2001
From: Xiubo Li <lixi...@cmss.chinamobile.com>
Date: Thu, 3 Dec 2015 17:31:52 +0800
Subject: [PATCH] regmap: add 64-bit mode support
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 <lixi...@cmss.chinamobile.com>
Signed-off-by: Mark Brown <broo...@kernel.org>
---
drivers/base/regmap/regmap.c | 99 ++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 99 insertions(+)
diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c
index 4ac63c0e50c7..1791180dca02 100644
--- a/drivers/base/regmap/regmap.c
+++ b/drivers/base/regmap/regmap.c
@@ -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;
--
2.6.2
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