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Revert "usb: dwc3: Add support of disable L1 in HS mode"

Browse source 
This reverts commit c3de8d2179 ("usb: dwc3: Add support
of disable L1 in HS mode") since the patch had implemented
the functionality by changing the bcdUSB to 2.0.
Eventhough it solves the problem, this results in compliance
failures.
Fix this by reverting the implementation. This will allow
the compliance to detect the DUT as L1 supported device.

Change-Id: I30894618584ebedf697dd98e0c94a42c961bc49d
Signed-off-by: Udipto Goswami <ugoswami@codeaurora.org>
This commit is contained in:
Udipto Goswami 2021-08-04 20:40:24 +05:30 • committed by Gerrit - the friendly Code Review server
commit 286f4af0df
4 changed files with 2 additions and 6 deletions
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2
drivers/usb/dwc3/core.c
View file

@ -1485,8 +1485,6 @@ static void dwc3_get_properties(struct dwc3 *dwc)
"snps,dis-tx-ipgap-linecheck-quirk");
dwc->parkmode_disable_ss_quirk = device_property_read_bool(dev,
"snps,parkmode-disable-ss-quirk");
dwc->usb2_l1_disable = device_property_read_bool(dev,
"snps,usb2-l1-disable");
dwc->tx_de_emphasis_quirk = device_property_read_bool(dev,
"snps,tx_de_emphasis_quirk");

1
drivers/usb/dwc3/core.h
View file

@ -1363,7 +1363,6 @@ struct dwc3 {
unsigned tx_de_emphasis:2;
unsigned err_evt_seen:1;
unsigned enable_bus_suspend:1;
unsigned usb2_l1_disable:1;
atomic_t in_lpm;
bool b_suspend;

2
drivers/usb/dwc3/gadget.c
View file

@ -4369,7 +4369,7 @@ int dwc3_gadget_init(struct dwc3 *dwc)
dwc->gadget.speed = USB_SPEED_UNKNOWN;
dwc->gadget.sg_supported = true;
dwc->gadget.name = "dwc3-gadget";
dwc->gadget.lpm_capable = !dwc->usb2_l1_disable;
dwc->gadget.lpm_capable = true;
/*
* FIXME We might be setting max_speed to <SUPER, however versions

3
drivers/usb/gadget/composite.c
View file

@ -1726,12 +1726,11 @@ composite_setup(struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl)
count_configs(cdev, USB_DT_DEVICE);
cdev->desc.bMaxPacketSize0 =
cdev->gadget->ep0->maxpacket;
cdev->desc.bcdUSB = cpu_to_le16(0x0200);
if (gadget_is_superspeed(gadget)) {
if (gadget->speed >= USB_SPEED_SUPER) {
cdev->desc.bcdUSB = cpu_to_le16(0x0320);
cdev->desc.bMaxPacketSize0 = 9;
} else if (gadget->lpm_capable) {
} else {
cdev->desc.bcdUSB = cpu_to_le16(0x0210);
}
} else {