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, 107 insertions, 6 deletions

diff --git a/arch/sh/kernel/cpu/sh4a/setup-sh7780.c b/arch/sh/kernel/cpu/sh4a/setup-sh7780.c
index f8f21618d785..338dfc2c2bb5 100644
--- a/arch/sh/kernel/cpu/sh4a/setup-sh7780.c
+++ b/arch/sh/kernel/cpu/sh4a/setup-sh7780.c
@@ -247,15 +247,115 @@ static struct platform_device rtc_device = {
         .resource       = rtc_resources,
 };
 
-static struct sh_dmae_pdata dma_platform_data = {
-        .mode = (SHDMA_MIX_IRQ | SHDMA_DMAOR1),
+/* DMA */
+static struct sh_dmae_channel sh7780_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 sh7780_dmae1_channels[] = {
+        {
+                .offset = 0,
+        }, {
+                .offset = 0x10,
+        }, {
+                .offset = 0x20,
+        }, {
+                .offset = 0x30,
+        }, {
+                .offset = 0x50,
+        }, {
+                .offset = 0x60,
+        }
+};
+
+static struct sh_dmae_pdata dma0_platform_data = {
+        .channel        = sh7780_dmae0_channels,
+        .channel_num    = ARRAY_SIZE(sh7780_dmae0_channels),
+};
+
+static struct sh_dmae_pdata dma1_platform_data = {
+        .channel        = sh7780_dmae1_channels,
+        .channel_num    = ARRAY_SIZE(sh7780_dmae1_channels),
+};
+
+static struct resource sh7780_dmae0_resources[] = {
+        [0] = {
+                /* Channel registers and DMAOR */
+                .start  = 0xfc808020,
+                .end    = 0xfc80808f,
+                .flags  = IORESOURCE_MEM,
+        },
+        [1] = {
+                /* DMARSx */
+                .start  = 0xfc809000,
+                .end    = 0xfc80900b,
+                .flags  = IORESOURCE_MEM,
+        },
+        {
+                /* Real DMA error IRQ is 38, and channel IRQs are 34-37, 44-45 */
+                .start  = 34,
+                .end    = 34,
+                .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_SHAREABLE,
+        },
+};
+
+static struct resource sh7780_dmae1_resources[] = {
+        [0] = {
+                /* Channel registers and DMAOR */
+                .start  = 0xfc818020,
+                .end    = 0xfc81808f,
+                .flags  = IORESOURCE_MEM,
+        },
+        /* DMAC1 has no DMARS */
+        {
+                /* Real DMA error IRQ is 38, and channel IRQs are 46-47, 92-95 */
+                .start  = 46,
+                .end    = 46,
+                .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_SHAREABLE,
+        },
 };
 
-static struct platform_device dma_device = {
+static struct platform_device dma0_device = {
         .name           = "sh-dma-engine",
-        .id             = -1,
+        .id             = 0,
+        .resource       = sh7780_dmae0_resources,
+        .num_resources  = ARRAY_SIZE(sh7780_dmae0_resources),
         .dev            = {
-                .platform_data  = &dma_platform_data,
+                .platform_data  = &dma0_platform_data,
+        },
+};
+
+static struct platform_device dma1_device = {
+        .name           = "sh-dma-engine",
+        .id             = 1,
+        .resource       = sh7780_dmae1_resources,
+        .num_resources  = ARRAY_SIZE(sh7780_dmae1_resources),
+        .dev            = {
+                .platform_data  = &dma1_platform_data,
         },
 };
 
@@ -269,7 +369,8 @@ static struct platform_device *sh7780_devices[] __initdata = {
         &tmu4_device,
         &tmu5_device,
         &rtc_device,
-        &dma_device,
+        &dma0_device,
+        &dma1_device,
 };
 
 static int __init sh7780_devices_setup(void)