davinci: dm646x: Add IDE setup
This patch adds platform data and init function for IDE which could be called
from board specific file to register IDE device.
Note that for 594MHz device the transfer mode is limited to UDMA4 since ideclk
rate is less than 100 MHz, which forces udma_mask in palm_bk3710.c to UDMA4,
while for 729MHz device, it is UDMA5.
Signed-off-by: Hemant Pedanekar <hemantp@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
diff --git a/arch/arm/mach-davinci/dm646x.c b/arch/arm/mach-davinci/dm646x.c
index 50f01e0..3516f76 100644
--- a/arch/arm/mach-davinci/dm646x.c
+++ b/arch/arm/mach-davinci/dm646x.c
@@ -600,6 +600,32 @@
.resource = edma_resources,
};
+static struct resource ide_resources[] = {
+ {
+ .start = DM646X_ATA_REG_BASE,
+ .end = DM646X_ATA_REG_BASE + 0x7ff,
+ .flags = IORESOURCE_MEM,
+ },
+ {
+ .start = IRQ_DM646X_IDE,
+ .end = IRQ_DM646X_IDE,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static u64 ide_dma_mask = DMA_BIT_MASK(32);
+
+static struct platform_device ide_dev = {
+ .name = "palm_bk3710",
+ .id = -1,
+ .resource = ide_resources,
+ .num_resources = ARRAY_SIZE(ide_resources),
+ .dev = {
+ .dma_mask = &ide_dma_mask,
+ .coherent_dma_mask = DMA_BIT_MASK(32),
+ },
+};
+
static struct resource dm646x_mcasp0_resources[] = {
{
.name = "mcasp0",
@@ -769,6 +795,12 @@
.sram_len = SZ_32K,
};
+void __init dm646x_init_ide()
+{
+ davinci_cfg_reg(DM646X_ATAEN);
+ platform_device_register(&ide_dev);
+}
+
void __init dm646x_init_mcasp0(struct snd_platform_data *pdata)
{
dm646x_mcasp0_device.dev.platform_data = pdata;