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usb: dwc2: host: fix descriptor list address masking 

Masks for HCDMA.CTD and HCDMA.DMAAddr are incorrect. As we always
start from first descriptor, no need to mask the address anyway.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Mian Yousaf Kaukab 2015-11-20 11:49:30 +01:00 committed by Felipe Balbi
parent 95105a998d
commit e23b8a54a4
2 changed files with 3 additions and 11 deletions
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10
drivers/usb/dwc2/core.c
View File

@ -1905,7 +1905,6 @@ void dwc2_hc_start_transfer_ddma(struct dwc2_hsotg *hsotg,
struct dwc2_host_chan *chan)
{
u32 hcchar;
u32 hc_dma;
u32 hctsiz = 0;
if (chan->do_ping)
@ -1937,14 +1936,11 @@ void dwc2_hc_start_transfer_ddma(struct dwc2_hsotg *hsotg,
dma_sync_single_for_device(hsotg->dev, chan->desc_list_addr,
chan->desc_list_sz, DMA_TO_DEVICE);
hc_dma = (u32)chan->desc_list_addr & HCDMA_DMA_ADDR_MASK;
dwc2_writel(chan->desc_list_addr, hsotg->regs + HCDMA(chan->hc_num));
/* Always start from first descriptor */
hc_dma &= ~HCDMA_CTD_MASK;
dwc2_writel(hc_dma, hsotg->regs + HCDMA(chan->hc_num));
if (dbg_hc(chan))
dev_vdbg(hsotg->dev, "Wrote %08x to HCDMA(%d)\n",
hc_dma, chan->hc_num);
dev_vdbg(hsotg->dev, "Wrote %pad to HCDMA(%d)\n",
&chan->desc_list_addr, chan->hc_num);
hcchar = dwc2_readl(hsotg->regs + HCCHAR(chan->hc_num));
hcchar &= ~HCCHAR_MULTICNT_MASK;

4
drivers/usb/dwc2/hw.h
View File

@ -769,10 +769,6 @@
#define TSIZ_XFERSIZE_SHIFT 0
#define HCDMA(_ch) HSOTG_REG(0x0514 + 0x20 * (_ch))
#define HCDMA_DMA_ADDR_MASK (0x1fffff << 11)
#define HCDMA_DMA_ADDR_SHIFT 11
#define HCDMA_CTD_MASK (0xff << 3)
#define HCDMA_CTD_SHIFT 3
#define HCDMAB(_ch) HSOTG_REG(0x051c + 0x20 * (_ch))