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| author | Simon Arlott <simon@fire.lp0.eu> | 2015-10-29 20:58:47 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2015-11-16 10:43:54 +0100 |
| commit | 29bb45f25ff3051354ed330c0d0f10418a2b8c7c (patch) | |
| tree | a9fb3b022d66d5c87f7a41727d22b6ff0eabf3d2 /drivers/base/regmap | |
| parent | Linux 4.4-rc1 (diff) | |
| download | linux-29bb45f25ff3051354ed330c0d0f10418a2b8c7c.tar.xz linux-29bb45f25ff3051354ed330c0d0f10418a2b8c7c.zip | |
regmap-mmio: Use native endianness for read/write
The regmap API has an endianness setting for formatting reads and writes.
This can be set by the usual DT "little-endian" and "big-endian" properties.
To work properly the associated regmap_bus needs to read/write in native
endian.
The "syscon" DT device binding creates an mmio-based regmap_bus which
performs all reads/writes as little-endian. These values are then converted
again by regmap, which means that all of the MIPS BCM boards (which are
big-endian) have been declared as "little-endian" to get regmap to convert
them back to big-endian.
Modify regmap-mmio to use the native-endian functions __raw_read*() and
__raw_write*() instead of the little-endian functions read*() and
write*().
Modify the big-endian MIPS BCM boards to use what will now be the correct
endianness instead of pretending that the devices are little-endian.
Signed-off-by: Simon Arlott <simon@fire.lp0.eu>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/base/regmap')
| -rw-r--r-- | drivers/base/regmap/regmap-mmio.c | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/drivers/base/regmap/regmap-mmio.c b/drivers/base/regmap/regmap-mmio.c index 426a57e41ac7..8a77876d439a 100644 --- a/drivers/base/regmap/regmap-mmio.c +++ b/drivers/base/regmap/regmap-mmio.c @@ -106,17 +106,17 @@ static int regmap_mmio_gather_write(void *context, while (val_size) { switch (ctx->val_bytes) { case 1: - writeb(*(u8 *)val, ctx->regs + offset); + __raw_writeb(*(u8 *)val, ctx->regs + offset); break; case 2: - writew(*(u16 *)val, ctx->regs + offset); + __raw_writew(*(u16 *)val, ctx->regs + offset); break; case 4: - writel(*(u32 *)val, ctx->regs + offset); + __raw_writel(*(u32 *)val, ctx->regs + offset); break; #ifdef CONFIG_64BIT case 8: - writeq(*(u64 *)val, ctx->regs + offset); + __raw_writeq(*(u64 *)val, ctx->regs + offset); break; #endif default: @@ -166,17 +166,17 @@ static int regmap_mmio_read(void *context, while (val_size) { switch (ctx->val_bytes) { case 1: - *(u8 *)val = readb(ctx->regs + offset); + *(u8 *)val = __raw_readb(ctx->regs + offset); break; case 2: - *(u16 *)val = readw(ctx->regs + offset); + *(u16 *)val = __raw_readw(ctx->regs + offset); break; case 4: - *(u32 *)val = readl(ctx->regs + offset); + *(u32 *)val = __raw_readl(ctx->regs + offset); break; #ifdef CONFIG_64BIT case 8: - *(u64 *)val = readq(ctx->regs + offset); + *(u64 *)val = __raw_readq(ctx->regs + offset); break; #endif default: |