The driver currently only uses DMA linked mode and the upstream
driver does the same, so remove the basic mode code.
Signed-off-by: Christian Lütke-Stetzkamp <christian@xxxxxxxx>
---
drivers/staging/mt7621-mmc/sd.c | 88 +++++++++++++++--------------------------
1 file changed, 32 insertions(+), 56 deletions(-)
diff --git a/drivers/staging/mt7621-mmc/sd.c b/drivers/staging/mt7621-mmc/sd.c
index 1d0829e88886..1196e8eb86c5 100644
--- a/drivers/staging/mt7621-mmc/sd.c
+++ b/drivers/staging/mt7621-mmc/sd.c
@@ -1040,66 +1040,42 @@ static void msdc_dma_config(struct msdc_host *host, struct msdc_dma *dma)
struct gpd *gpd;
struct bd *bd;
- switch (dma->mode) {
- case MSDC_MODE_DMA_BASIC:
- BUG_ON(host->xfer_size > 65535);
- BUG_ON(dma->sglen != 1);
- writel(PHYSADDR(sg_dma_address(sg)), MSDC_DMA_SA);
- sdr_set_field(MSDC_DMA_CTRL, MSDC_DMA_CTRL_LASTBUF, 1);
-//#if defined (CONFIG_RALINK_MT7620)
- if (ralink_soc == MT762X_SOC_MT7620A)
- sdr_set_field(MSDC_DMA_CTRL, MSDC_DMA_CTRL_XFERSZ, sg_dma_len(sg));
-//#elif defined (CONFIG_RALINK_MT7621) || defined (CONFIG_RALINK_MT7628)
+ /* calculate the required number of gpd */
+ num = (dma->sglen + MAX_BD_PER_GPD - 1) / MAX_BD_PER_GPD;
+ BUG_ON(num != 1);
+
+ gpd = dma->gpd;
+ bd = dma->bd;
+
+ /* modify gpd*/
+ //gpd->intr = 0;
+ gpd->hwo = 1; /* hw will clear it */
+ gpd->bdp = 1;
+ gpd->chksum = 0; /* need to clear first. */
+ gpd->chksum = msdc_dma_calcs((u8 *)gpd, 16);
+
+ /* modify bd*/
+ for_each_sg(dma->sg, sg, dma->sglen, j) {
+ bd[j].blkpad = 0;
+ bd[j].dwpad = 0;
+ bd[j].ptr = (void *)sg_dma_address(sg);
+ bd[j].buflen = sg_dma_len(sg);
+
+ if (j == dma->sglen - 1)
+ bd[j].eol = 1; /* the last bd */
else
- writel(sg_dma_len(sg), (void __iomem *)(RALINK_MSDC_BASE + 0xa8));
-//#endif
- sdr_set_field(MSDC_DMA_CTRL, MSDC_DMA_CTRL_BRUSTSZ,
- MSDC_BRUST_64B);
- sdr_set_field(MSDC_DMA_CTRL, MSDC_DMA_CTRL_MODE, 0);
- break;
- case MSDC_MODE_DMA_DESC:
-
- /* calculate the required number of gpd */
- num = (dma->sglen + MAX_BD_PER_GPD - 1) / MAX_BD_PER_GPD;
- BUG_ON(num != 1);
-
- gpd = dma->gpd;
- bd = dma->bd;
-
- /* modify gpd*/
- //gpd->intr = 0;
- gpd->hwo = 1; /* hw will clear it */
- gpd->bdp = 1;
- gpd->chksum = 0; /* need to clear first. */
- gpd->chksum = msdc_dma_calcs((u8 *)gpd, 16);
-
- /* modify bd*/
- for_each_sg(dma->sg, sg, dma->sglen, j) {
- bd[j].blkpad = 0;
- bd[j].dwpad = 0;
- bd[j].ptr = (void *)sg_dma_address(sg);
- bd[j].buflen = sg_dma_len(sg);
-
- if (j == dma->sglen - 1)
- bd[j].eol = 1; /* the last bd */
- else
- bd[j].eol = 0;
+ bd[j].eol = 0;
- bd[j].chksum = 0; /* checksume need to clear first */
- bd[j].chksum = msdc_dma_calcs((u8 *)(&bd[j]), 16);
- }
+ bd[j].chksum = 0; /* checksume need to clear first */
+ bd[j].chksum = msdc_dma_calcs((u8 *)(&bd[j]), 16);
+ }
- sdr_set_field(MSDC_DMA_CFG, MSDC_DMA_CFG_DECSEN, 1);
- sdr_set_field(MSDC_DMA_CTRL, MSDC_DMA_CTRL_BRUSTSZ,
- MSDC_BRUST_64B);
- sdr_set_field(MSDC_DMA_CTRL, MSDC_DMA_CTRL_MODE, 1);
+ sdr_set_field(MSDC_DMA_CFG, MSDC_DMA_CFG_DECSEN, 1);
+ sdr_set_field(MSDC_DMA_CTRL, MSDC_DMA_CTRL_BRUSTSZ,
+ MSDC_BRUST_64B);
+ sdr_set_field(MSDC_DMA_CTRL, MSDC_DMA_CTRL_MODE, 1);
- writel(PHYSADDR((u32)dma->gpd_addr), MSDC_DMA_SA);
- break;
-
- default:
- break;
- }
+ writel(PHYSADDR((u32)dma->gpd_addr), MSDC_DMA_SA);
N_MSG(DMA, "DMA_CTRL = 0x%x", readl(MSDC_DMA_CTRL));
N_MSG(DMA, "DMA_CFG = 0x%x", readl(MSDC_DMA_CFG));
--
2.16.4
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