[6/8] usb: host: xhci-plat: add priv flag for skip_phy_initialization

Commit Message

Peter Chen May 22, 2020, 10:32 a.m. UTC

Some DRD controllers (eg, dwc3 & cdns3) have PHY management at
their own driver to cover both device and host mode, so add one
priv flag for such users to skip PHY management from HCD core.

Signed-off-by: Peter Chen <[e-mail]>
---
 drivers/usb/host/xhci-plat.c | 8 ++++++--
 drivers/usb/host/xhci-plat.h | 1 +
 2 files changed, 7 insertions(+), 2 deletions(-)

Patch

diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c
index a45c7ec33ed6..f653b717c098 100644
--- a/drivers/usb/host/xhci-plat.c
+++ b/drivers/usb/host/xhci-plat.c
@@ -173,6 +173,8 @@  static int xhci_plat_probe(struct platform_device *pdev)
 	struct usb_hcd		*hcd;
 	int			ret;
 	int			irq;
+	struct xhci_plat_priv	*priv = NULL;
+
 
 	if (usb_disabled())
 		return -ENODEV;
@@ -271,8 +273,7 @@  static int xhci_plat_probe(struct platform_device *pdev)
 		priv_match = dev_get_platdata(&pdev->dev);
 
 	if (priv_match) {
-		struct xhci_plat_priv *priv = hcd_to_xhci_priv(hcd);
-
+		priv = hcd_to_xhci_priv(hcd);
 		/* Just copy data for now */
 		*priv = *priv_match;
 	}
@@ -324,6 +325,9 @@  static int xhci_plat_probe(struct platform_device *pdev)
 
 	hcd->tpl_support = of_usb_host_tpl_support(sysdev->of_node);
 	xhci->shared_hcd->tpl_support = hcd->tpl_support;
+	if (priv && priv->skip_phy_initialization)
+		hcd->skip_phy_initialization = 1;
+
 	ret = usb_add_hcd(hcd, irq, IRQF_SHARED);
 	if (ret)
 		goto disable_usb_phy;
diff --git a/drivers/usb/host/xhci-plat.h b/drivers/usb/host/xhci-plat.h
index 9338a4f946d0..d78e86e14f59 100644
--- a/drivers/usb/host/xhci-plat.h
+++ b/drivers/usb/host/xhci-plat.h
@@ -13,6 +13,7 @@ 
 struct xhci_plat_priv {
 	const char *firmware_name;
 	unsigned long long quirks;
+	unsigned int skip_phy_initialization:1;
 	void (*plat_start)(struct usb_hcd *);
 	int (*init_quirk)(struct usb_hcd *);
 	int (*suspend_quirk)(struct usb_hcd *);