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>

1 files changed, 29 insertions, 1 deletions

diff --git a/drivers/dma/mmp_tdma.c b/drivers/dma/mmp_tdma.c
index ea5c3d26dd35..8f3e865053d4 100644
--- 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);