2019-09-04 17:01:23 +00:00
|
|
|
From d57d366ea6da1ce01228ceb0898c5e562683cc4e Mon Sep 17 00:00:00 2001
|
2019-07-09 18:32:28 +00:00
|
|
|
From: P33M <p33m@github.com>
|
|
|
|
|
Date: Mon, 8 Apr 2019 12:45:23 +0100
|
2019-09-04 17:01:23 +00:00
|
|
|
Subject: [PATCH 416/782] dwc_otg: only do_split when we actually need to do a
|
2019-07-09 18:32:28 +00:00
|
|
|
split
|
|
|
|
|
|
|
|
|
|
The previous test would fail if the root port was in fullspeed mode
|
|
|
|
|
and there was a hub between the FS device and the root port. While
|
|
|
|
|
the transfer worked, the schedule mangling performed for high-speed
|
|
|
|
|
split transfers would break leading to an 8ms polling interval.
|
|
|
|
|
---
|
|
|
|
|
drivers/usb/host/dwc_otg/dwc_otg_hcd_queue.c | 9 ++++-----
|
|
|
|
|
1 file changed, 4 insertions(+), 5 deletions(-)
|
|
|
|
|
|
|
|
|
|
--- a/drivers/usb/host/dwc_otg/dwc_otg_hcd_queue.c
|
|
|
|
|
+++ b/drivers/usb/host/dwc_otg/dwc_otg_hcd_queue.c
|
|
|
|
|
@@ -167,8 +167,10 @@ void qh_init(dwc_otg_hcd_t * hcd, dwc_ot
|
|
|
|
|
char *speed, *type;
|
|
|
|
|
int dev_speed;
|
|
|
|
|
uint32_t hub_addr, hub_port;
|
|
|
|
|
+ hprt0_data_t hprt;
|
|
|
|
|
|
|
|
|
|
dwc_memset(qh, 0, sizeof(dwc_otg_qh_t));
|
|
|
|
|
+ hprt.d32 = DWC_READ_REG32(hcd->core_if->host_if->hprt0);
|
|
|
|
|
|
|
|
|
|
/* Initialize QH */
|
|
|
|
|
qh->ep_type = dwc_otg_hcd_get_pipe_type(&urb->pipe_info);
|
|
|
|
|
@@ -191,9 +193,8 @@ void qh_init(dwc_otg_hcd_t * hcd, dwc_ot
|
|
|
|
|
|
|
|
|
|
qh->nak_frame = 0xffff;
|
|
|
|
|
|
|
|
|
|
- if (((dev_speed == USB_SPEED_LOW) ||
|
|
|
|
|
- (dev_speed == USB_SPEED_FULL)) &&
|
|
|
|
|
- (hub_addr != 0 && hub_addr != 1)) {
|
|
|
|
|
+ if (hprt.b.prtspd == DWC_HPRT0_PRTSPD_HIGH_SPEED &&
|
|
|
|
|
+ dev_speed != USB_SPEED_HIGH) {
|
|
|
|
|
DWC_DEBUGPL(DBG_HCD,
|
|
|
|
|
"QH init: EP %d: TT found at hub addr %d, for port %d\n",
|
|
|
|
|
dwc_otg_hcd_get_ep_num(&urb->pipe_info), hub_addr,
|
|
|
|
|
@@ -204,7 +205,6 @@ void qh_init(dwc_otg_hcd_t * hcd, dwc_ot
|
|
|
|
|
|
|
|
|
|
if (qh->ep_type == UE_INTERRUPT || qh->ep_type == UE_ISOCHRONOUS) {
|
|
|
|
|
/* Compute scheduling parameters once and save them. */
|
|
|
|
|
- hprt0_data_t hprt;
|
|
|
|
|
|
|
|
|
|
/** @todo Account for split transfers in the bus time. */
|
|
|
|
|
int bytecount =
|
|
|
|
|
@@ -219,7 +219,6 @@ void qh_init(dwc_otg_hcd_t * hcd, dwc_ot
|
|
|
|
|
SCHEDULE_SLOP);
|
|
|
|
|
qh->interval = urb->interval;
|
|
|
|
|
|
|
|
|
|
- hprt.d32 = DWC_READ_REG32(hcd->core_if->host_if->hprt0);
|
|
|
|
|
if (hprt.b.prtspd == DWC_HPRT0_PRTSPD_HIGH_SPEED) {
|
|
|
|
|
if (dev_speed == USB_SPEED_LOW ||
|
|
|
|
|
dev_speed == USB_SPEED_FULL) {
|
