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disp: msm: dp: retry the request to set USB mode during bootup

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DP driver is requesting USB to release SS lanes very early
during bootup even before USB has fully initialized. As a
result USB driver is returning -11 which will abort DP state
machine. This change will allow DP driver to retry USB request
whenever this error code is received.

Change-Id: I144d16ef4b07016569ba9c04df15610fe3b5e6fc
Signed-off-by: Sandeep Gangadharaiah <sandgang@codeaurora.org>
This commit is contained in:
Sandeep Gangadharaiah
2021-09-13 23:15:27 -04:00
committed by Gerrit - the friendly Code Review server
parent 95a41081eb
commit edd46a2a54
1 changed files with 2 additions and 2 deletions
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4
msm/dp/dp_altmode.c
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@@ -43,7 +43,7 @@ enum dp_altmode_pin_assignment {
static int dp_altmode_set_usb_dp_mode(struct dp_altmode_private *altmode) static int dp_altmode_set_usb_dp_mode(struct dp_altmode_private *altmode)
{ {
int rc; int rc = 0;
struct device_node *np; struct device_node *np;
struct device_node *usb_node; struct device_node *usb_node;
struct platform_device *usb_pdev; struct platform_device *usb_pdev;
@@ -71,7 +71,7 @@ static int dp_altmode_set_usb_dp_mode(struct dp_altmode_private *altmode)
while (timeout) { while (timeout) {
rc = dwc3_msm_set_dp_mode(&usb_pdev->dev, altmode->connected, altmode->lanes); rc = dwc3_msm_set_dp_mode(&usb_pdev->dev, altmode->connected, altmode->lanes);
if (rc != -EBUSY) if (rc != -EBUSY && rc != -EAGAIN)
break; break;
DP_WARN("USB busy, retry\n"); DP_WARN("USB busy, retry\n");