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usb: dwc3: gadget: always start isochronous aligned to dep->interval

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We will *always* start transfer to the next uFrame number aligned to
dep->interval.

Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
This commit is contained in:
Felipe Balbi 2018-04-11 10:34:34 +03:00
parent d513320f1f
commit f62afb4929
1 changed files with 5 additions and 10 deletions
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15
drivers/usb/dwc3/gadget.c
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@ -27,6 +27,9 @@
#include "gadget.h"
#include "io.h"
#define DWC3_ALIGN_FRAME(d) (((d)->frame_number + (d)->interval) \
& ~((d)->interval - 1))
/**
* dwc3_gadget_set_test_mode - enables usb2 test modes
* @dwc: pointer to our context structure
@ -1267,11 +1270,7 @@ static void __dwc3_gadget_start_isoc(struct dwc3_ep *dep)
return;
}
/*
* Schedule the first trb for one interval in the future or at
* least 4 microframes.
*/
dep->frame_number += max_t(u32, 4, dep->interval);
dep->frame_number = DWC3_ALIGN_FRAME(dep);
__dwc3_gadget_kick_transfer(dep);
}
@ -2377,11 +2376,7 @@ static void dwc3_gadget_ep_cleanup_completed_requests(struct dwc3_ep *dep,
static void dwc3_gadget_endpoint_frame_from_event(struct dwc3_ep *dep,
const struct dwc3_event_depevt *event)
{
u32 cur_uf, mask;
mask = ~(dep->interval - 1);
cur_uf = event->parameters & mask;
dep->frame_number = cur_uf;
dep->frame_number = event->parameters;
}
static void dwc3_gadget_endpoint_transfer_in_progress(struct dwc3_ep *dep,