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 ea5c3d2..8f3e865 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 @@
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);