linux-kernel - [PATCH] usb: dwc: host: add xhci_plat_priv quirk XHCI_SKIP_PHY

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Date:   Mon, 11 Oct 2021 15:31:57 +0530
From:   Sandeep Maheswaram <sanm@...eaurora.org>
To:     Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Felipe Balbi <balbi@...nel.org>,
        Stephen Boyd <swboyd@...omium.org>,
        Doug Anderson <dianders@...omium.org>,
        Matthias Kaehlcke <mka@...omium.org>,
        Mathias Nyman <mathias.nyman@...el.com>
Cc:     linux-arm-msm@...r.kernel.org, linux-usb@...r.kernel.org,
        linux-kernel@...r.kernel.org, ppratap@...eaurora.org,
        pkondeti@...eaurora.org, Sandeep Maheswaram <sanm@...eaurora.org>
Subject: [PATCH] usb: dwc: host: add xhci_plat_priv quirk XHCI_SKIP_PHY_INIT

dwc3 manages PHY by own DRD driver, so skip the management by
HCD core.
During runtime suspend phy was not getting suspend because
runtime_usage value is 2.

Signed-off-by: Sandeep Maheswaram <sanm@...eaurora.org>
---
 drivers/usb/dwc3/host.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/drivers/usb/dwc3/host.c b/drivers/usb/dwc3/host.c
index f29a264..0921f05 100644
--- a/drivers/usb/dwc3/host.c
+++ b/drivers/usb/dwc3/host.c
@@ -11,6 +11,11 @@
 #include <linux/platform_device.h>
 
 #include "core.h"
+#include "../host/xhci-plat.h"
+
+static const struct xhci_plat_priv xhci_plat_dwc3_xhci = {
+	.quirks = XHCI_SKIP_PHY_INIT,
+};
 
 static int dwc3_host_get_irq(struct dwc3 *dwc)
 {
@@ -115,6 +120,13 @@ int dwc3_host_init(struct dwc3 *dwc)
 		}
 	}
 
+	ret = platform_device_add_data(xhci, &xhci_plat_dwc3_xhci,
+			sizeof(struct xhci_plat_priv));
+	if (ret) {
+		dev_err(dwc->dev, "failed to add data to xHCI\n");
+		goto err;
+	}
+
 	ret = platform_device_add(xhci);
 	if (ret) {
 		dev_err(dwc->dev, "failed to register xHCI device\n");
-- 
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