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- From 9d630b9cde28dc261cdfc608ed68ef5487404422 Mon Sep 17 00:00:00 2001
- From: Grigor Tovmasyan <Grigor.Tovmasyan@synopsys.com>
- Date: Wed, 29 Aug 2018 21:00:03 +0400
- Subject: [PATCH 08/53] usb: dwc2: Add dwc2_gadget_dec_frame_num_by_one()
- function
- Added dwc2_gadget_dec_frame_num_by_one() function in gadget.c.
- This function will be used to calculate descriptor frame number field
- value. For service interval mode frame number in descriptor should point
- to last (u)frame in the 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>
- ---
- drivers/usb/dwc2/gadget.c | 18 ++++++++++++++++++
- 1 file changed, 18 insertions(+)
- diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c
- index 12032f0488d8..71f097d89001 100644
- --- a/drivers/usb/dwc2/gadget.c
- +++ b/drivers/usb/dwc2/gadget.c
- @@ -123,6 +123,24 @@ static inline void dwc2_gadget_incr_frame_num(struct dwc2_hsotg_ep *hs_ep)
- }
-
- /**
- + * dwc2_gadget_dec_frame_num_by_one - Decrements the targeted frame number
- + * by one.
- + * @hs_ep: The endpoint.
- + *
- + * This function used in service interval based scheduling flow to calculate
- + * descriptor frame number filed value. For service interval mode frame
- + * number in descriptor should point to last (u)frame in the interval.
- + *
- + */
- +static inline void dwc2_gadget_dec_frame_num_by_one(struct dwc2_hsotg_ep *hs_ep)
- +{
- + if (hs_ep->target_frame)
- + hs_ep->target_frame -= 1;
- + else
- + hs_ep->target_frame = DSTS_SOFFN_LIMIT;
- +}
- +
- +/**
- * dwc2_hsotg_en_gsint - enable one or more of the general interrupt
- * @hsotg: The device state
- * @ints: A bitmask of the interrupts to enable
- --
- 2.11.0
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