ARM: S3C24XX: claim spi channels for hsspi in dma-s3c2443

SoCs starting with the S3C2443 contain SPI controllers compatible with the
spi-s3c64xx driver and therefore need separate dma channels for rx and tx.

This patch introduces dma channel declarations for these and changes the
dma-s3c2443.c accordingly.

None of the older SoCs use the spi-dma at all. Most boards bitbang their
spi use and the spi-s3c24xx driver also does not use the dma system.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>

2 files changed, 16 insertions, 4 deletions

diff --git a/arch/arm/mach-s3c24xx/dma-s3c2443.c b/arch/arm/mach-s3c24xx/dma-s3c2443.c
index e227c472a40a..2d94228d2866 100644
--- a/arch/arm/mach-s3c24xx/dma-s3c2443.c
+++ b/arch/arm/mach-s3c24xx/dma-s3c2443.c
@@ -55,12 +55,20 @@ static struct s3c24xx_dma_map __initdata s3c2443_dma_mappings[] = {
                 .name           = "sdi",
                 .channels       = MAP(S3C2443_DMAREQSEL_SDI),
         },
-        [DMACH_SPI0] = {
-                .name           = "spi0",
+        [DMACH_SPI0_RX] = {
+                .name           = "spi0-rx",
+                .channels       = MAP(S3C2443_DMAREQSEL_SPI0RX),
+        },
+        [DMACH_SPI0_TX] = {
+                .name           = "spi0-tx",
                 .channels       = MAP(S3C2443_DMAREQSEL_SPI0TX),
         },
-        [DMACH_SPI1] = { /* only on S3C2443/S3C2450 */
-                .name           = "spi1",
+        [DMACH_SPI1_RX] = { /* only on S3C2443/S3C2450 */
+                .name           = "spi1-rx",
+                .channels       = MAP(S3C2443_DMAREQSEL_SPI1RX),
+        },
+        [DMACH_SPI1_TX] = { /* only on S3C2443/S3C2450 */
+                .name           = "spi1-tx",
                 .channels       = MAP(S3C2443_DMAREQSEL_SPI1TX),
         },
         [DMACH_UART0] = {
diff --git a/arch/arm/mach-s3c24xx/include/mach/dma.h b/arch/arm/mach-s3c24xx/include/mach/dma.h
index acbdfecd4186..454831b66037 100644
--- a/arch/arm/mach-s3c24xx/include/mach/dma.h
+++ b/arch/arm/mach-s3c24xx/include/mach/dma.h
@@ -47,6 +47,10 @@ enum dma_ch {
         DMACH_UART2_SRC2,
         DMACH_UART3,            /* s3c2443 has extra uart */
         DMACH_UART3_SRC2,
+        DMACH_SPI0_TX,          /* s3c2443/2416/2450 hsspi0 */
+        DMACH_SPI0_RX,          /* s3c2443/2416/2450 hsspi0 */
+        DMACH_SPI1_TX,          /* s3c2443/2450 hsspi1 */
+        DMACH_SPI1_RX,          /* s3c2443/2450 hsspi1 */
         DMACH_MAX,              /* the end entry */
 };