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From: Mathias Nyman <mathias.nyman@linux.intel.com>
To: <gregkh@linuxfoundation.org>
Cc: <linux-usb@vger.kernel.org>, Peter Chen <peter.chen@nxp.com>,
	Mathias Nyman <mathias.nyman@linux.intel.com>
Subject: [PATCH 04/10] usb: host: xhci-plat: add priv quirk for skip PHY initialization
Date: Fri, 18 Sep 2020 16:17:46 +0300	[thread overview]
Message-ID: <20200918131752.16488-5-mathias.nyman@linux.intel.com> (raw)
In-Reply-To: <20200918131752.16488-1-mathias.nyman@linux.intel.com>

From: Peter Chen <peter.chen@nxp.com>

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

Reviewed-by: Jun Li <jun.li@nxp.com>
Signed-off-by: Peter Chen <peter.chen@nxp.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
---
 drivers/usb/host/xhci-plat.c | 8 ++++++--
 drivers/usb/host/xhci.h      | 1 +
 2 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c
index 07ca000a0084..14ff65a387e8 100644
--- a/drivers/usb/host/xhci-plat.c
+++ b/drivers/usb/host/xhci-plat.c
@@ -183,6 +183,8 @@ 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;
@@ -280,8 +282,7 @@ 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;
 	}
@@ -329,6 +330,9 @@ 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->quirks & XHCI_SKIP_PHY_INIT))
+		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.h b/drivers/usb/host/xhci.h
index ea1754f185a2..7658abdfca28 100644
--- a/drivers/usb/host/xhci.h
+++ b/drivers/usb/host/xhci.h
@@ -1874,6 +1874,7 @@ struct xhci_hcd {
 #define XHCI_RESET_PLL_ON_DISCONNECT	BIT_ULL(34)
 #define XHCI_SNPS_BROKEN_SUSPEND    BIT_ULL(35)
 #define XHCI_RENESAS_FW_QUIRK	BIT_ULL(36)
+#define XHCI_SKIP_PHY_INIT	BIT_ULL(37)
 
 	unsigned int		num_active_eps;
 	unsigned int		limit_active_eps;
-- 
2.17.1


  parent reply	other threads:[~2020-09-18 13:14 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-09-18 13:17 [PATCH 00/10] xhci features for usb-next Mathias Nyman
2020-09-18 13:17 ` [PATCH 01/10] usb: host: xhci-plat: add platform data support Mathias Nyman
2020-09-18 13:17 ` [PATCH 02/10] usb: host: xhci-plat: add .suspend_quirk for struct xhci_plat_priv Mathias Nyman
2020-09-18 13:17 ` [PATCH 03/10] usb: host: xhci-plat: delete the unnecessary code Mathias Nyman
2020-09-18 13:17 ` Mathias Nyman [this message]
2020-09-18 13:17 ` [PATCH 05/10] usb: host: xhci-plat: add wakeup entry at sysfs Mathias Nyman
2020-09-18 13:17 ` [PATCH 06/10] usb: host: xhci-plat: improve the comments for xhci_plat_suspend Mathias Nyman
2020-09-18 13:17 ` [PATCH 07/10] usb: xhci: omit duplicate actions when suspending a runtime suspended host Mathias Nyman
2020-09-18 13:17 ` [PATCH 08/10] xhci: Tune interrupt blocking for isochronous transfers Mathias Nyman
2020-09-18 13:17 ` [PATCH 09/10] xhci: don't create endpoint debugfs entry before ring buffer is set Mathias Nyman
2020-09-21 12:54   ` Sasha Levin
2020-09-18 13:17 ` [PATCH 10/10] usb: xhci: add debugfs support for ep with stream Mathias Nyman

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