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>

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: