Commit f18b6edb authored by Chunfeng Yun's avatar Chunfeng Yun Committed by Greg Kroah-Hartman
Browse files

usb: xhci-mtk: print debug info of endpoint interval 



Print bInterval and convert it into the time expressed in
us or ms unit, this is the key info when allocate bandwidth
failed.

Signed-off-by: default avatarChunfeng Yun <chunfeng.yun@mediatek.com>
Link: https://lore.kernel.org/r/f7a9fa7a812296fcd6c603bfa9853076144018d6.1615170625.git.chunfeng.yun@mediatek.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent fb95c7cf

drivers/usb/host/xhci-mtk-sch.c

+29 −8
Original line number Diff line number Diff line
@@ -25,6 +25,8 @@ 
 */

#define TT_MICROFRAMES_MAX 9



#define DBG_BUF_EN	64



/* schedule error type */

#define ESCH_SS_Y6		1001

#define ESCH_SS_OVERLAP		1002
@@ -62,6 +64,31 @@ static int is_fs_or_ls(enum usb_device_speed speed) 
	return speed == USB_SPEED_FULL || speed == USB_SPEED_LOW;

}



static const char *

decode_ep(struct usb_host_endpoint *ep, enum usb_device_speed speed)

{

	static char buf[DBG_BUF_EN];

	struct usb_endpoint_descriptor *epd = &ep->desc;

	unsigned int interval;

	const char *unit;



	interval = usb_decode_interval(epd, speed);

	if (interval % 1000) {

		unit = "us";

	} else {

		unit = "ms";

		interval /= 1000;

	}



	snprintf(buf, DBG_BUF_EN, "%s ep%d%s %s, mpkt:%d, interval:%d/%d%s\n",

		 usb_speed_string(speed), usb_endpoint_num(epd),

		 usb_endpoint_dir_in(epd) ? "in" : "out",

		 usb_ep_type_string(usb_endpoint_type(epd)),

		 usb_endpoint_maxp(epd), epd->bInterval, interval, unit);



	return buf;

}



static u32 get_bw_boundary(enum usb_device_speed speed)

{

	u32 boundary;
@@ -711,10 +738,7 @@ static int add_ep_quirk(struct usb_hcd *hcd, struct usb_device *udev, 
	ep_index = xhci_get_endpoint_index(&ep->desc);

	ep_ctx = xhci_get_ep_ctx(xhci, virt_dev->in_ctx, ep_index);



	xhci_dbg(xhci, "%s() type:%d, speed:%d, mpkt:%d, dir:%d, ep:%p\n",

		__func__, usb_endpoint_type(&ep->desc), udev->speed,

		usb_endpoint_maxp(&ep->desc),

		usb_endpoint_dir_in(&ep->desc), ep);

	xhci_dbg(xhci, "%s %s\n", __func__, decode_ep(ep, udev->speed));



	if (!need_bw_sch(ep, udev->speed, !!virt_dev->tt_info)) {

		/*
@@ -750,10 +774,7 @@ static void drop_ep_quirk(struct usb_hcd *hcd, struct usb_device *udev, 


	virt_dev = xhci->devs[udev->slot_id];



	xhci_dbg(xhci, "%s() type:%d, speed:%d, mpks:%d, dir:%d, ep:%p\n",

		__func__, usb_endpoint_type(&ep->desc), udev->speed,

		usb_endpoint_maxp(&ep->desc),

		usb_endpoint_dir_in(&ep->desc), ep);

	xhci_dbg(xhci, "%s %s\n", __func__, decode_ep(ep, udev->speed));



	if (!need_bw_sch(ep, udev->speed, !!virt_dev->tt_info))

		return;