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usb: dwc3: gadget: add frame number mask 

This patch adds a define DWC3_FRNUMBER_MASK for the commonly used
0x3fff mask and uses it.

Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Signed-off-by: Felipe Balbi <balbi@kernel.org>
This commit is contained in:
Michael Grzeschik 2020-07-01 20:24:51 +02:00 committed by Felipe Balbi
parent 7f2ca14d2f
commit ca14378560
2 changed files with 4 additions and 2 deletions
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4
drivers/usb/dwc3/gadget.c
View File

@ -1403,7 +1403,7 @@ static int dwc3_gadget_start_isoc_quirk(struct dwc3_ep *dep)
* Check if we can start isoc transfer on the next interval or
* 4 uframes in the future with BIT[15:14] as dep->combo_num
*/
test_frame_number = dep->frame_number & 0x3fff;
test_frame_number = dep->frame_number & DWC3_FRNUMBER_MASK;
test_frame_number |= dep->combo_num << 14;
test_frame_number += max_t(u32, 4, dep->interval);
@ -1450,7 +1450,7 @@ static int dwc3_gadget_start_isoc_quirk(struct dwc3_ep *dep)
else if (test0 && test1)
dep->combo_num = 0;
dep->frame_number &= 0x3fff;
dep->frame_number &= DWC3_FRNUMBER_MASK;
dep->frame_number |= dep->combo_num << 14;
dep->frame_number += max_t(u32, 4, dep->interval);

2
drivers/usb/dwc3/gadget.h
View File

@ -54,6 +54,8 @@ struct dwc3;
/* U2 Device exit Latency */
#define DWC3_DEFAULT_U2_DEV_EXIT_LAT 0x1FF /* Less then 511 microsec */
/* Frame/Microframe Number Mask */
#define DWC3_FRNUMBER_MASK 0x3fff
/* -------------------------------------------------------------------------- */
#define to_dwc3_request(r) (container_of(r, struct dwc3_request, request))