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regmap: mmio: request native endian formatting

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This will avoid the regmap core converting all addresses and values into
big endian, only for the mmio bus driver to have to convert them back to
native endian.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Stephen Warren 2012-05-24 10:47:27 -06:00 committed by Mark Brown
parent 141eba2e00
commit 6a55244e89
1 changed files with 18 additions and 8 deletions
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26
drivers/base/regmap/regmap-mmio.c
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@ -37,7 +37,7 @@ static int regmap_mmio_gather_write(void *context,
BUG_ON(reg_size != 4);
offset = be32_to_cpup(reg);
offset = *(u32 *)reg;
while (val_size) {
switch (ctx->val_bytes) {
@ -45,14 +45,14 @@ static int regmap_mmio_gather_write(void *context,
writeb(*(u8 *)val, ctx->regs + offset);
break;
case 2:
writew(be16_to_cpup(val), ctx->regs + offset);
writew(*(u16 *)val, ctx->regs + offset);
break;
case 4:
writel(be32_to_cpup(val), ctx->regs + offset);
writel(*(u32 *)val, ctx->regs + offset);
break;
#ifdef CONFIG_64BIT
case 8:
writeq(be64_to_cpup(val), ctx->regs + offset);
writeq(*(u64 *)val, ctx->regs + offset);
break;
#endif
default:
@ -83,7 +83,7 @@ static int regmap_mmio_read(void *context,
BUG_ON(reg_size != 4);
offset = be32_to_cpup(reg);
offset = *(u32 *)reg;
while (val_size) {
switch (ctx->val_bytes) {
@ -91,14 +91,14 @@ static int regmap_mmio_read(void *context,
*(u8 *)val = readb(ctx->regs + offset);
break;
case 2:
*(u16 *)val = cpu_to_be16(readw(ctx->regs + offset));
*(u16 *)val = readw(ctx->regs + offset);
break;
case 4:
*(u32 *)val = cpu_to_be32(readl(ctx->regs + offset));
*(u32 *)val = readl(ctx->regs + offset);
break;
#ifdef CONFIG_64BIT
case 8:
*(u64 *)val = cpu_to_be32(readq(ctx->regs + offset));
*(u64 *)val = readq(ctx->regs + offset);
break;
#endif
default:
@ -124,6 +124,8 @@ static struct regmap_bus regmap_mmio = {
.gather_write = regmap_mmio_gather_write,
.read = regmap_mmio_read,
.free_context = regmap_mmio_free_context,
.reg_format_endian_default = REGMAP_ENDIAN_NATIVE,
.val_format_endian_default = REGMAP_ENDIAN_NATIVE,
};
struct regmap_mmio_context *regmap_mmio_gen_context(void __iomem *regs,
@ -162,6 +164,14 @@ struct regmap_mmio_context *regmap_mmio_gen_context(void __iomem *regs,
if (config->reg_stride < min_stride)
return ERR_PTR(-EINVAL);
switch (config->reg_format_endian) {
case REGMAP_ENDIAN_DEFAULT:
case REGMAP_ENDIAN_NATIVE:
break;
default:
return ERR_PTR(-EINVAL);
}
ctx = kzalloc(GFP_KERNEL, sizeof(*ctx));
if (!ctx)
return ERR_PTR(-ENOMEM);