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Commit eeebcdff authored by Vamsi Krishna Samavedam's avatar Vamsi Krishna Samavedam
Browse files

dwc3: gadget: Set TXFRAMNUM_N while resizing TXFIFO for ISOC eps 



Set TXFRAMNUM_N per synopsys programming guide recommendation for isoc
endpoints.

Change-Id: I8a433e8e6198f0374e13c75619bfffc8238432ea
Signed-off-by: default avatarVamsi Krishna Samavedam <vskrishn@codeaurora.org>
parent f24738ce

drivers/usb/dwc3/core.c

+1 −0
Original line number Diff line number Diff line
@@ -660,6 +660,7 @@ static bool dwc3_core_is_valid(struct dwc3 *dwc) 
		/* Detected DWC_usb31 IP */

		dwc->revision = dwc3_readl(dwc->regs, DWC3_VER_NUMBER);

		dwc->revision |= DWC3_REVISION_IS_DWC31;

		dwc->versiontype = dwc3_readl(dwc->regs, DWC3_VER_TYPE);

	} else {

		return false;

	}

drivers/usb/dwc3/core.h

+5 −0
Original line number Diff line number Diff line
@@ -1061,6 +1061,11 @@ struct dwc3 { 
#define DWC3_REVISION_IS_DWC31		0x80000000

#define DWC3_USB31_REVISION_110A	(0x3131302a | DWC3_REVISION_IS_DWC31)

#define DWC3_USB31_REVISION_120A	(0x3132302a | DWC3_REVISION_IS_DWC31)

#define DWC3_USB31_REVISION_170A	(0x3137302a | DWC3_REVISION_IS_DWC31)



	/* valid only for dwc31 configuraitons */

	u32			versiontype;

#define DWC3_USB31_VER_TYPE_EA06	0x65613036



	enum dwc3_ep0_next	ep0_next_event;

	enum dwc3_ep0_state	ep0state;

drivers/usb/dwc3/ep0.c

+0 −6
Original line number Diff line number Diff line
@@ -682,12 +682,6 @@ static int dwc3_ep0_set_config(struct dwc3 *dwc, struct usb_ctrlrequest *ctrl) 
						DWC3_ENDPOINTS_NUM); num += 2) {

				dep = dwc->eps[num];

				size = 0;

				/* Don't change TXFRAMNUM on usb31 version */

				if (dwc3_is_usb31(dwc))

					size = dwc3_readl(dwc->regs,

						DWC3_GTXFIFOSIZ(num >> 1)) &

						DWC31_GTXFIFOSIZ_TXFRAMNUM;



				dwc3_writel(dwc->regs,

					DWC3_GTXFIFOSIZ(num >> 1), size);

				dep->fifo_depth = 0;

drivers/usb/dwc3/gadget.c

+5 −0
Original line number Diff line number Diff line
@@ -270,6 +270,11 @@ int dwc3_gadget_resize_tx_fifos(struct dwc3 *dwc, struct dwc3_ep *dep) 
		return -ENOMEM;

	}



	if ((dwc->revision == DWC3_USB31_REVISION_170A) &&

		(dwc->versiontype == DWC3_USB31_VER_TYPE_EA06) &&

		usb_endpoint_xfer_isoc(dep->endpoint.desc))

		fifo_size |= DWC31_GTXFIFOSIZ_TXFRAMNUM;



	dwc3_writel(dwc->regs, DWC3_GTXFIFOSIZ(dep->endpoint.ep_num),

							fifo_size);

	return 0;