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From: Stephen Warren <swarren@wwwdotorg.org>
To: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cc: linux-kernel@vger.kernel.org, Stephen Warren <swarren@nvidia.com>
Subject: [PATCH 2/2] regmap: mmio: request native endian formatting
Date: Wed, 23 May 2012 16:33:54 -0600	[thread overview]
Message-ID: <1337812434-7609-2-git-send-email-swarren@wwwdotorg.org> (raw)
In-Reply-To: <1337812434-7609-1-git-send-email-swarren@wwwdotorg.org>

From: Stephen Warren <swarren@nvidia.com>

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>
---
 drivers/base/regmap/regmap-mmio.c |   17 +++++++++--------
 1 files changed, 9 insertions(+), 8 deletions(-)

diff --git a/drivers/base/regmap/regmap-mmio.c b/drivers/base/regmap/regmap-mmio.c
index febd6de..49cdf59 100644
--- a/drivers/base/regmap/regmap-mmio.c
+++ b/drivers/base/regmap/regmap-mmio.c
@@ -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 +124,7 @@ static struct regmap_bus regmap_mmio = {
 	.gather_write = regmap_mmio_gather_write,
 	.read = regmap_mmio_read,
 	.free_context = regmap_mmio_free_context,
+	.format_endian = REGMAP_ENDIAN_NATIVE,
 };
 
 struct regmap_mmio_context *regmap_mmio_gen_context(void __iomem *regs,
-- 
1.7.0.4


  reply	other threads:[~2012-05-23 22:34 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-05-23 22:33 [PATCH 1/2] regmap: allow busses to request formatting with specific endianness Stephen Warren
2012-05-23 22:33 ` Stephen Warren [this message]
2012-05-23 23:16 ` Mark Brown
2012-05-23 23:28   ` Stephen Warren
2012-05-23 23:35     ` Mark Brown

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