dmaengine: shdma: convert to platform device resources

The shdma dmaengine driver currently uses numerous macros to support various
platforms, selected by ifdef's. Convert it to use platform device resources and
lists of channel descriptors to specify register locations, interrupt numbers
and other system-specific configuration variants. Unavoidably, we have to
simultaneously convert all shdma users to provide those resources.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

1 files changed, 151 insertions, 8 deletions

diff --git a/arch/sh/kernel/cpu/sh4a/setup-sh7724.c b/arch/sh/kernel/cpu/sh4a/setup-sh7724.c
index 31e3451f7e3d..aca1fb2c571b 100644
--- a/arch/sh/kernel/cpu/sh4a/setup-sh7724.c
+++ b/arch/sh/kernel/cpu/sh4a/setup-sh7724.c
@@ -28,15 +28,157 @@
 #include <cpu/sh7724.h>
 
 /* DMA */
-static struct sh_dmae_pdata dma_platform_data = {
-        .mode = SHDMA_DMAOR1,
+static struct sh_dmae_channel sh7724_dmae0_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 struct sh_dmae_channel sh7724_dmae1_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 struct sh_dmae_pdata dma0_platform_data = {
+        .channel        = sh7724_dmae0_channels,
+        .channel_num    = ARRAY_SIZE(sh7724_dmae0_channels),
+};
+
+static struct sh_dmae_pdata dma1_platform_data = {
+        .channel        = sh7724_dmae1_channels,
+        .channel_num    = ARRAY_SIZE(sh7724_dmae1_channels),
+};
+
+/* Resource order important! */
+static struct resource sh7724_dmae0_resources[] = {
+        {
+                /* Channel registers and DMAOR */
+                .start  = 0xfe008020,
+                .end    = 0xfe00808f,
+                .flags  = IORESOURCE_MEM,
+        },
+        {
+                /* DMARSx */
+                .start  = 0xfe009000,
+                .end    = 0xfe00900b,
+                .flags  = IORESOURCE_MEM,
+        },
+        {
+                /* DMA error IRQ */
+                .start  = 78,
+                .end    = 78,
+                .flags  = IORESOURCE_IRQ,
+        },
+        {
+                /* IRQ for channels 0-3 */
+                .start  = 48,
+                .end    = 51,
+                .flags  = IORESOURCE_IRQ,
+        },
+        {
+                /* IRQ for channels 4-5 */
+                .start  = 76,
+                .end    = 77,
+                .flags  = IORESOURCE_IRQ,
+        },
 };
 
-static struct platform_device dma_device = {
-        .name   = "sh-dma-engine",
-        .id             = -1,
-        .dev    = {
-                .platform_data  = &dma_platform_data,
+/* Resource order important! */
+static struct resource sh7724_dmae1_resources[] = {
+        {
+                /* Channel registers and DMAOR */
+                .start  = 0xfdc08020,
+                .end    = 0xfdc0808f,
+                .flags  = IORESOURCE_MEM,
+        },
+        {
+                /* DMARSx */
+                .start  = 0xfdc09000,
+                .end    = 0xfdc0900b,
+                .flags  = IORESOURCE_MEM,
+        },
+        {
+                /* DMA error IRQ */
+                .start  = 74,
+                .end    = 74,
+                .flags  = IORESOURCE_IRQ,
+        },
+        {
+                /* IRQ for channels 0-3 */
+                .start  = 40,
+                .end    = 43,
+                .flags  = IORESOURCE_IRQ,
+        },
+        {
+                /* IRQ for channels 4-5 */
+                .start  = 72,
+                .end    = 73,
+                .flags  = IORESOURCE_IRQ,
+        },
+};
+
+static struct platform_device dma0_device = {
+        .name           = "sh-dma-engine",
+        .id             = 0,
+        .resource       = sh7724_dmae0_resources,
+        .num_resources  = ARRAY_SIZE(sh7724_dmae0_resources),
+        .dev            = {
+                .platform_data  = &dma0_platform_data,
+        },
+};
+
+static struct platform_device dma1_device = {
+        .name           = "sh-dma-engine",
+        .id             = 1,
+        .resource       = sh7724_dmae1_resources,
+        .num_resources  = ARRAY_SIZE(sh7724_dmae1_resources),
+        .dev            = {
+                .platform_data  = &dma1_platform_data,
         },
 };
 
@@ -663,7 +805,8 @@ static struct platform_device *sh7724_devices[] __initdata = {
         &tmu3_device,
         &tmu4_device,
         &tmu5_device,
-        &dma_device,
+        &dma0_device,
+        &dma1_device,
         &rtc_device,
         &iic0_device,
         &iic1_device,