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usb: dwc2: gadget: Add dwc2_gadget_read_ep_interrupts function

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Reads and returns interrupts for given endpoint, by masking epint_reg
with corresponding mask.

Tested-by: John Keeping <john@metanate.com>
Signed-off-by: Vardan Mikayelyan <mvardan@synopsys.com>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
This commit is contained in:
Vardan Mikayelyan 2016-05-25 18:07:10 -07:00 committed by Felipe Balbi
parent 142bd33fcd
commit 326015887b
1 changed files with 29 additions and 1 deletions
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30
drivers/usb/dwc2/gadget.c
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@ -1946,6 +1946,34 @@ static void dwc2_hsotg_complete_in(struct dwc2_hsotg *hsotg,
dwc2_hsotg_complete_request(hsotg, hs_ep, hs_req, 0);
}
/**
* dwc2_gadget_read_ep_interrupts - reads interrupts for given ep
* @hsotg: The device state.
* @idx: Index of ep.
* @dir_in: Endpoint direction 1-in 0-out.
*
* Reads for endpoint with given index and direction, by masking
* epint_reg with coresponding mask.
*/
static u32 dwc2_gadget_read_ep_interrupts(struct dwc2_hsotg *hsotg,
unsigned int idx, int dir_in)
{
u32 epmsk_reg = dir_in ? DIEPMSK : DOEPMSK;
u32 epint_reg = dir_in ? DIEPINT(idx) : DOEPINT(idx);
u32 ints;
u32 mask;
u32 diepempmsk;
mask = dwc2_readl(hsotg->regs + epmsk_reg);
diepempmsk = dwc2_readl(hsotg->regs + DIEPEMPMSK);
mask |= ((diepempmsk >> idx) & 0x1) ? DIEPMSK_TXFIFOEMPTY : 0;
mask |= DXEPINT_SETUP_RCVD;
ints = dwc2_readl(hsotg->regs + epint_reg);
ints &= mask;
return ints;
}
/**
* dwc2_hsotg_epint - handle an in/out endpoint interrupt
* @hsotg: The driver state
@ -1964,7 +1992,7 @@ static void dwc2_hsotg_epint(struct dwc2_hsotg *hsotg, unsigned int idx,
u32 ints;
u32 ctrl;
ints = dwc2_readl(hsotg->regs + epint_reg);
ints = dwc2_gadget_read_ep_interrupts(hsotg, idx, dir_in);
ctrl = dwc2_readl(hsotg->regs + epctl_reg);
/* Clear endpoint interrupts */