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usb: dwc2: gadget: Add descriptor DMA parameter

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Add a parameter for descriptor DMA and set it based on hardware
capabilities. This won't actually be used by the gadget until later,
when the descriptor DMA code is in place.

Signed-off-by: Vahram Aharonyan <vahrama@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:
Vahram Aharonyan
2016-11-09 19:27:48 -08:00
committed by Felipe Balbi
parent aa4049f3a5
commit dec4b55677
3 changed files with 19 additions and 0 deletions
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11
drivers/usb/dwc2/gadget.c
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@@ -96,6 +96,17 @@ static inline bool using_dma(struct dwc2_hsotg *hsotg)
return hsotg->params.g_dma;
}
/*
* using_desc_dma - return the descriptor DMA status of the driver.
* @hsotg: The driver state.
*
* Return true if we're using descriptor DMA.
*/
static inline bool using_desc_dma(struct dwc2_hsotg *hsotg)
{
return hsotg->params.g_dma_desc;
}
/**
* dwc2_gadget_incr_frame_num - Increments the targeted frame number.
* @hs_ep: The endpoint