sh: dmaengine support for SH7786 DMAC0.

Hook up DMAC0 on SH7786.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

diff --git a/arch/sh/include/cpu-sh4/cpu/dma-register.h b/arch/sh/include/cpu-sh4/cpu/dma-register.h
index 55f9fec..5df4df0 100644 (file)
--- a/arch/sh/include/cpu-sh4/cpu/dma-register.h
+++ b/arch/sh/include/cpu-sh4/cpu/dma-register.h
@@ -23,7 +23,8 @@
 #define CHCR_TS_HIGH_MASK      0
 #define CHCR_TS_HIGH_SHIFT     0
 #elif defined(CONFIG_CPU_SUBTYPE_SH7722) || \
-       defined(CONFIG_CPU_SUBTYPE_SH7724)
+       defined(CONFIG_CPU_SUBTYPE_SH7724) || \
+       defined(CONFIG_CPU_SUBTYPE_SH7786)
 #define CHCR_TS_LOW_MASK       0x00000018
 #define CHCR_TS_LOW_SHIFT      3
 #define CHCR_TS_HIGH_MASK      0x00300000

diff --git a/arch/sh/kernel/cpu/sh4a/setup-sh7786.c b/arch/sh/kernel/cpu/sh4a/setup-sh7786.c
index f559990..61e5491 100644 (file)
--- a/arch/sh/kernel/cpu/sh4a/setup-sh7786.c
+++ b/arch/sh/kernel/cpu/sh4a/setup-sh7786.c
@@ -1,7 +1,7 @@
 /*
  * SH7786 Setup
  *
- * Copyright (C) 2009  Renesas Solutions Corp.
+ * Copyright (C) 2009 - 2010  Renesas Solutions Corp.
  * Kuninori Morimoto <morimoto.kuninori@renesas.com>
  * Paul Mundt <paul.mundt@renesas.com>
  *
@@ -21,7 +21,9 @@
 #include <linux/mm.h>
 #include <linux/dma-mapping.h>
 #include <linux/sh_timer.h>
+#include <cpu/dma-register.h>
 #include <asm/mmzone.h>
+#include <asm/dmaengine.h>
 
 static struct plat_sci_port scif0_platform_data = {
        .mapbase        = 0xffea0000,
@@ -442,6 +444,83 @@ static struct platform_device tmu11_device = {
        .num_resources  = ARRAY_SIZE(tmu11_resources),
 };
 
+static struct sh_dmae_channel dmac0_channels[] = {
+       {
+               .offset = 0,
+               .dmars = 0,
+               .dmars_bit = 0,
+       }, {
+               .offset = 0x10,
+               .dmars = 0,
+               .dmars_bit = 8,
+       }, {
+               .offset = 0x20,
+               .dmars = 4,
+               .dmars_bit = 0,
+       }, {
+               .offset = 0x30,
+               .dmars = 4,
+               .dmars_bit = 8,
+       }, {
+               .offset = 0x50,
+               .dmars = 8,
+               .dmars_bit = 0,
+       }, {
+               .offset = 0x60,
+               .dmars = 8,
+               .dmars_bit = 8,
+       }
+};
+
+static unsigned int ts_shift[] = TS_SHIFT;
+
+static struct sh_dmae_pdata dma0_platform_data = {
+       .channel        = dmac0_channels,
+       .channel_num    = ARRAY_SIZE(dmac0_channels),
+       .ts_low_shift   = CHCR_TS_LOW_SHIFT,
+       .ts_low_mask    = CHCR_TS_LOW_MASK,
+       .ts_high_shift  = CHCR_TS_HIGH_SHIFT,
+       .ts_high_mask   = CHCR_TS_HIGH_MASK,
+       .ts_shift       = ts_shift,
+       .ts_shift_num   = ARRAY_SIZE(ts_shift),
+       .dmaor_init     = DMAOR_INIT,
+};
+
+/* Resource order important! */
+static struct resource dmac0_resources[] = {
+       {
+               /* Channel registers and DMAOR */
+               .start  = 0xfe008020,
+               .end    = 0xfe00808f,
+               .flags  = IORESOURCE_MEM,
+       }, {
+               /* DMARSx */
+               .start  = 0xfe009000,
+               .end    = 0xfe00900b,
+               .flags  = IORESOURCE_MEM,
+       }, {
+               /* DMA error IRQ */
+               .start  = evt2irq(0x5c0),
+               .end    = evt2irq(0x5c0),
+               .flags  = IORESOURCE_IRQ,
+       }, {
+               /* IRQ for channels 0-5 */
+               .start  = evt2irq(0x500),
+               .end    = evt2irq(0x5a0),
+               .flags  = IORESOURCE_IRQ,
+       },
+};
+
+static struct platform_device dma0_device = {
+       .name           = "sh-dma-engine",
+       .id             = 0,
+       .resource       = dmac0_resources,
+       .num_resources  = ARRAY_SIZE(dmac0_resources),
+       .dev            = {
+               .platform_data  = &dma0_platform_data,
+       },
+};
+
 static struct resource usb_ohci_resources[] = {
        [0] = {
                .start  = 0xffe70400,
@@ -489,6 +568,7 @@ static struct platform_device *sh7786_early_devices[] __initdata = {
 };
 
 static struct platform_device *sh7786_devices[] __initdata = {
+       &dma0_device,
        &usb_ohci_device,
 };