[PATCH 2/2] usb: dwc: host: add xhci_plat_priv quirk XHCI_SKIP_PHY_INIT

From: Sandeep Maheswaram <quic_c_sanm@quicinc.com>
To: Peter Chen <peter.chen@kernel.org>,
	Pawel Laszczak <pawell@cadence.com>,
	Roger Quadros <rogerq@kernel.org>,
	Aswath Govindraju <a-govindraju@ti.com>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Felipe Balbi <balbi@kernel.org>,
	Mathias Nyman <mathias.nyman@intel.com>,
	Stephen Boyd <swboyd@chromium.org>,
	Doug Anderson <dianders@chromium.org>,
	"Matthias Kaehlcke" <mka@chromium.org>
Cc: <linux-arm-msm@vger.kernel.org>, <linux-usb@vger.kernel.org>,
	<linux-kernel@vger.kernel.org>, <quic_pkondeti@quicinc.com>,
	<quic_ppratap@quicinc.com>,
	Sandeep Maheswaram <quic_c_sanm@quicinc.com>
Subject: [PATCH 2/2] usb: dwc: host: add xhci_plat_priv quirk XHCI_SKIP_PHY_INIT
Date: Tue, 15 Feb 2022 23:54:14 +0530	[thread overview]
Message-ID: <1644949454-814-3-git-send-email-quic_c_sanm@quicinc.com> (raw)
In-Reply-To: <1644949454-814-1-git-send-email-quic_c_sanm@quicinc.com>

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 <quic_c_sanm@quicinc.com>
---
 drivers/usb/dwc3/host.c | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/drivers/usb/dwc3/host.c b/drivers/usb/dwc3/host.c
index eda8719..4a035a8 100644
--- a/drivers/usb/dwc3/host.c
+++ b/drivers/usb/dwc3/host.c
@@ -13,6 +13,14 @@
 #include <linux/platform_device.h>
 
 #include "core.h"
+#include <linux/usb/hcd.h>
+#include <linux/usb/xhci-plat.h>
+#include <linux/usb/xhci-quirks.h>
+
+
+static const struct xhci_plat_priv xhci_plat_dwc3_xhci = {
+	.quirks = XHCI_SKIP_PHY_INIT,
+};
 
 static void dwc3_host_fill_xhci_irq_res(struct dwc3 *dwc,
 					int irq, char *name)
@@ -122,6 +130,13 @@ 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");
-- 
2.7.4

