[PATCH 5/5] sh: dmaengine support for sh7724

From: Guennadi Liakhovetski
Date: Fri Dec 04 2009 - 13:45:08 EST


Add a dmaengine platform device to sh7724, fix DMA channel interrupt numbers.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@xxxxxx>
---

With this patch dmatest works with channels 0-5, channels 6-11 still don't
work for some reason... So, feel free to discard it for now, if a complete
fix would be preferred.

arch/sh/include/cpu-sh4/cpu/dma-sh4a.h | 8 ++++----
arch/sh/kernel/cpu/sh4a/setup-sh7724.c | 14 ++++++++++++++
2 files changed, 18 insertions(+), 4 deletions(-)

diff --git a/arch/sh/include/cpu-sh4/cpu/dma-sh4a.h b/arch/sh/include/cpu-sh4/cpu/dma-sh4a.h
index f0886bc..c4ed660 100644
--- a/arch/sh/include/cpu-sh4/cpu/dma-sh4a.h
+++ b/arch/sh/include/cpu-sh4/cpu/dma-sh4a.h
@@ -19,10 +19,10 @@
#elif defined(CONFIG_CPU_SUBTYPE_SH7723) || \
defined(CONFIG_CPU_SUBTYPE_SH7724)
#define DMTE0_IRQ 48 /* DMAC0A*/
-#define DMTE4_IRQ 40 /* DMAC0B */
-#define DMTE6_IRQ 42
-#define DMTE8_IRQ 76 /* DMAC1A */
-#define DMTE9_IRQ 77
+#define DMTE4_IRQ 76 /* DMAC0B */
+#define DMTE6_IRQ 40
+#define DMTE8_IRQ 42 /* DMAC1A */
+#define DMTE9_IRQ 43
#define DMTE10_IRQ 72 /* DMAC1B */
#define DMTE11_IRQ 73
#define DMAE0_IRQ 78 /* DMA Error IRQ*/
diff --git a/arch/sh/kernel/cpu/sh4a/setup-sh7724.c b/arch/sh/kernel/cpu/sh4a/setup-sh7724.c
index 6dc4469..da55a4e 100644
--- a/arch/sh/kernel/cpu/sh4a/setup-sh7724.c
+++ b/arch/sh/kernel/cpu/sh4a/setup-sh7724.c
@@ -23,9 +23,22 @@
#include <linux/notifier.h>
#include <asm/suspend.h>
#include <asm/clock.h>
+#include <asm/dma-sh.h>
#include <asm/mmzone.h>
#include <cpu/sh7724.h>

+static struct sh_dmae_pdata dma_platform_data = {
+ .mode = SHDMA_DMAOR1,
+};
+
+static struct platform_device dma_device = {
+ .name = "sh-dma-engine",
+ .id = -1,
+ .dev = {
+ .platform_data = &dma_platform_data,
+ },
+};
+
/* Serial */
static struct plat_sci_port sci_platform_data[] = {
{
@@ -533,6 +546,7 @@ static struct platform_device *sh7724_devices[] __initdata = {
&tmu3_device,
&tmu4_device,
&tmu5_device,
+ &dma_device,
&sci_device,
&rtc_device,
&iic0_device,
--
1.6.2.4

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