dma: mmp_tdma: add multiple burst size support for 910-squ

add multiple burst size support for 910-squ.

Signed-off-by: Qiao Zhou <zhouqiao@marvell.com>
Acked-by: Zhangfei Gao <zhangfei.gao@gmail.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>

diff --git a/drivers/dma/mmp_tdma.c b/drivers/dma/mmp_tdma.c
index ea5c3d26dd3522008ab70e4b442e3c1ce7c1b052..8f3e865053d446888bc535234bce4477935b5d1f 100644 (file)
--- a/drivers/dma/mmp_tdma.c
+++ b/drivers/dma/mmp_tdma.c
@@ -62,6 +62,11 @@
 #define TDCR_BURSTSZ_16B       (0x3 << 6)
 #define TDCR_BURSTSZ_32B       (0x6 << 6)
 #define TDCR_BURSTSZ_64B       (0x7 << 6)
+#define TDCR_BURSTSZ_SQU_1B            (0x5 << 6)
+#define TDCR_BURSTSZ_SQU_2B            (0x6 << 6)
+#define TDCR_BURSTSZ_SQU_4B            (0x0 << 6)
+#define TDCR_BURSTSZ_SQU_8B            (0x1 << 6)
+#define TDCR_BURSTSZ_SQU_16B   (0x3 << 6)
 #define TDCR_BURSTSZ_SQU_32B   (0x7 << 6)
 #define TDCR_BURSTSZ_128B      (0x5 << 6)
 #define TDCR_DSTDIR_MSK                (0x3 << 4)      /* Dst Direction */
@@ -228,8 +233,31 @@ static int mmp_tdma_config_chan(struct mmp_tdma_chan *tdmac)
                        return -EINVAL;
                }
        } else if (tdmac->type == PXA910_SQU) {
-               tdcr |= TDCR_BURSTSZ_SQU_32B;
                tdcr |= TDCR_SSPMOD;
+
+               switch (tdmac->burst_sz) {
+               case 1:
+                       tdcr |= TDCR_BURSTSZ_SQU_1B;
+                       break;
+               case 2:
+                       tdcr |= TDCR_BURSTSZ_SQU_2B;
+                       break;
+               case 4:
+                       tdcr |= TDCR_BURSTSZ_SQU_4B;
+                       break;
+               case 8:
+                       tdcr |= TDCR_BURSTSZ_SQU_8B;
+                       break;
+               case 16:
+                       tdcr |= TDCR_BURSTSZ_SQU_16B;
+                       break;
+               case 32:
+                       tdcr |= TDCR_BURSTSZ_SQU_32B;
+                       break;
+               default:
+                       dev_err(tdmac->dev, "mmp_tdma: unknown burst size.\n");
+                       return -EINVAL;
+               }
        }
 
        writel(tdcr, tdmac->reg_base + TDCR);