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usb: dwc2: Update target (u)frame calculation

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In service interval based scheduling target (u)frame must be
set as a last frame in this the service interval.

Acked-by: Minas Harutyunyan <hminas@synopsys.com>
Signed-off-by: Grigor Tovmasyan <tovmasya@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
This commit is contained in:
Grigor Tovmasyan 2018-08-29 21:00:33 +04:00 committed by Felipe Balbi
parent 9d630b9cde
commit 48dac4e4a5
1 changed files with 17 additions and 0 deletions
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17
drivers/usb/dwc2/gadget.c
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@ -2830,6 +2830,23 @@ static void dwc2_gadget_handle_nak(struct dwc2_hsotg_ep *hs_ep)
if (using_desc_dma(hsotg)) {
hs_ep->target_frame = hsotg->frame_number;
dwc2_gadget_incr_frame_num(hs_ep);
/* In service interval mode target_frame must
* be set to last (u)frame of the service interval.
*/
if (hsotg->params.service_interval) {
/* Set target_frame to the first (u)frame of
* the service interval
*/
hs_ep->target_frame &= ~hs_ep->interval + 1;
/* Set target_frame to the last (u)frame of
* the service interval
*/
dwc2_gadget_incr_frame_num(hs_ep);
dwc2_gadget_dec_frame_num_by_one(hs_ep);
}
dwc2_gadget_start_isoc_ddma(hs_ep);
return;
}