Hello. On 06/10/2015 12:18 PM, Kishon Vijay Abraham I wrote:
Add chained TRB support to ep0. Now TRB's can be chained just by invoking _dwc3_ep0_start_trans_ with 'chain' parameter set to true.
Signed-off-by: Kishon Vijay Abraham I <kishon@xxxxxx> --- drivers/usb/dwc3/ep0.c | 16 +++++++++++++--- drivers/usb/dwc3/gadget.c | 2 +- 2 files changed, 14 insertions(+), 4 deletions(-)
diff --git a/drivers/usb/dwc3/ep0.c b/drivers/usb/dwc3/ep0.c index d1a2be1..6847afe 100644 --- a/drivers/usb/dwc3/ep0.c +++ b/drivers/usb/dwc3/ep0.c
[...]
@@ -78,10 +81,17 @@ static int dwc3_ep0_start_trans(struct dwc3 *dwc, u8 epnum, dma_addr_t buf_dma, trb->ctrl = type; trb->ctrl |= (DWC3_TRB_CTRL_HWO - | DWC3_TRB_CTRL_LST - | DWC3_TRB_CTRL_IOC | DWC3_TRB_CTRL_ISP_IMI); + if (chain) + trb->ctrl |= DWC3_TRB_CTRL_CHN; + else + trb->ctrl |= (DWC3_TRB_CTRL_IOC + | DWC3_TRB_CTRL_LST);
Parens not needed here (and above too). [...] WBR, Sergei -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
