davinci: dm365: add EDMA support

Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>

1 files changed, 87 insertions, 0 deletions

diff --git a/arch/arm/mach-davinci/dm365.c b/arch/arm/mach-davinci/dm365.c
index 9d615db4463c..c52aad300844 100644
--- a/arch/arm/mach-davinci/dm365.c
+++ b/arch/arm/mach-davinci/dm365.c
@@ -660,6 +660,91 @@ static u8 dm365_default_priorities[DAVINCI_N_AINTC_IRQ] = {
         [IRQ_DM365_EMUINT]              = 7,
 };
 
+/* Four Transfer Controllers on DM365 */
+static const s8
+dm365_queue_tc_mapping[][2] = {
+        /* {event queue no, TC no} */
+        {0, 0},
+        {1, 1},
+        {2, 2},
+        {3, 3},
+        {-1, -1},
+};
+
+static const s8
+dm365_queue_priority_mapping[][2] = {
+        /* {event queue no, Priority} */
+        {0, 7},
+        {1, 7},
+        {2, 7},
+        {3, 0},
+        {-1, -1},
+};
+
+static struct edma_soc_info dm365_edma_info[] = {
+        {
+                .n_channel              = 64,
+                .n_region               = 4,
+                .n_slot                 = 256,
+                .n_tc                   = 4,
+                .n_cc                   = 1,
+                .queue_tc_mapping       = dm365_queue_tc_mapping,
+                .queue_priority_mapping = dm365_queue_priority_mapping,
+        },
+};
+
+static struct resource edma_resources[] = {
+        {
+                .name   = "edma_cc0",
+                .start  = 0x01c00000,
+                .end    = 0x01c00000 + SZ_64K - 1,
+                .flags  = IORESOURCE_MEM,
+        },
+        {
+                .name   = "edma_tc0",
+                .start  = 0x01c10000,
+                .end    = 0x01c10000 + SZ_1K - 1,
+                .flags  = IORESOURCE_MEM,
+        },
+        {
+                .name   = "edma_tc1",
+                .start  = 0x01c10400,
+                .end    = 0x01c10400 + SZ_1K - 1,
+                .flags  = IORESOURCE_MEM,
+        },
+        {
+                .name   = "edma_tc2",
+                .start  = 0x01c10800,
+                .end    = 0x01c10800 + SZ_1K - 1,
+                .flags  = IORESOURCE_MEM,
+        },
+        {
+                .name   = "edma_tc3",
+                .start  = 0x01c10c00,
+                .end    = 0x01c10c00 + SZ_1K - 1,
+                .flags  = IORESOURCE_MEM,
+        },
+        {
+                .name   = "edma0",
+                .start  = IRQ_CCINT0,
+                .flags  = IORESOURCE_IRQ,
+        },
+        {
+                .name   = "edma0_err",
+                .start  = IRQ_CCERRINT,
+                .flags  = IORESOURCE_IRQ,
+        },
+        /* not using TC*_ERR */
+};
+
+static struct platform_device dm365_edma_device = {
+        .name                   = "edma",
+        .id                     = 0,
+        .dev.platform_data      = dm365_edma_info,
+        .num_resources          = ARRAY_SIZE(edma_resources),
+        .resource               = edma_resources,
+};
+
 static struct map_desc dm365_io_desc[] = {
         {
                 .virtual        = IO_VIRT,
@@ -763,6 +848,8 @@ static int __init dm365_init_devices(void)
         if (!cpu_is_davinci_dm365())
                 return 0;
 
+        davinci_cfg_reg(DM365_INT_EDMA_CC);
+        platform_device_register(&dm365_edma_device);
         platform_device_register(&dm365_emac_device);
 
         return 0;