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regmap: mmio: request native endian formatting 

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);