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From: Peter Chen <peter.chen@nxp.com>
To: balbi@kernel.org, mathias.nyman@intel.com
Cc: linux-usb@vger.kernel.org, linux-imx@nxp.com, pawell@cadence.com,
	rogerq@ti.com, gregkh@linuxfoundation.org, jun.li@nxp.com,
	Peter Chen <peter.chen@nxp.com>
Subject: [PATCH 4/8] usb: host: xhci-plat: add .suspend_quirk for struct xhci_plat_priv
Date: Fri, 22 May 2020 18:32:52 +0800
Message-ID: <20200522103256.16322-5-peter.chen@nxp.com> (raw)
In-Reply-To: <20200522103256.16322-1-peter.chen@nxp.com>

Some platforms (eg cdns3) may have special sequences between
xhci_bus_suspend and xhci_suspend, add .suspend_quick for it.

Signed-off-by: Peter Chen <peter.chen@nxp.com>
---
 drivers/usb/host/xhci-plat.c | 19 +++++++++++++++++++
 drivers/usb/host/xhci-plat.h |  1 +
 2 files changed, 20 insertions(+)

diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c
index e00efd84ea1a..ca02e7f36238 100644
--- a/drivers/usb/host/xhci-plat.c
+++ b/drivers/usb/host/xhci-plat.c
@@ -54,6 +54,16 @@ static int xhci_priv_init_quirk(struct usb_hcd *hcd)
 	return priv->init_quirk(hcd);
 }
 
+static int xhci_priv_suspend_quirk(struct usb_hcd *hcd)
+{
+	struct xhci_plat_priv *priv = hcd_to_xhci_priv(hcd);
+
+	if (!priv->suspend_quirk)
+		return 0;
+
+	return priv->suspend_quirk(hcd);
+}
+
 static int xhci_priv_resume_quirk(struct usb_hcd *hcd)
 {
 	struct xhci_plat_priv *priv = hcd_to_xhci_priv(hcd);
@@ -396,7 +406,11 @@ static int __maybe_unused xhci_plat_suspend(struct device *dev)
 {
 	struct usb_hcd	*hcd = dev_get_drvdata(dev);
 	struct xhci_hcd	*xhci = hcd_to_xhci(hcd);
+	int ret;
 
+	ret = xhci_priv_suspend_quirk(hcd);
+	if (ret)
+		return ret;
 	/*
 	 * xhci_suspend() needs `do_wakeup` to know whether host is allowed
 	 * to do wakeup during suspend. Since xhci_plat_suspend is currently
@@ -425,6 +439,11 @@ static int __maybe_unused xhci_plat_runtime_suspend(struct device *dev)
 {
 	struct usb_hcd  *hcd = dev_get_drvdata(dev);
 	struct xhci_hcd *xhci = hcd_to_xhci(hcd);
+	int ret;
+
+	ret = xhci_priv_suspend_quirk(hcd);
+	if (ret)
+		return ret;
 
 	return xhci_suspend(xhci, true);
 }
diff --git a/drivers/usb/host/xhci-plat.h b/drivers/usb/host/xhci-plat.h
index 5681723fc9cd..9338a4f946d0 100644
--- a/drivers/usb/host/xhci-plat.h
+++ b/drivers/usb/host/xhci-plat.h
@@ -15,6 +15,7 @@ struct xhci_plat_priv {
 	unsigned long long quirks;
 	void (*plat_start)(struct usb_hcd *);
 	int (*init_quirk)(struct usb_hcd *);
+	int (*suspend_quirk)(struct usb_hcd *);
 	int (*resume_quirk)(struct usb_hcd *);
 };
 
-- 
2.17.1


  parent reply index

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-05-22 10:32 [PATCH 0/8] usb: cdns3: add runtime PM support Peter Chen
2020-05-22 10:32 ` [PATCH 1/8] " Peter Chen
2020-05-22 10:32 ` [PATCH 2/8] usb: cdns3: imx: add glue layer runtime pm implementation Peter Chen
2020-05-22 10:32 ` [PATCH 3/8] usb: host: xhci-plat: add platform data support Peter Chen
2020-05-22 10:32 ` Peter Chen [this message]
2020-05-22 10:32 ` [PATCH 5/8] usb: host: xhci-plat: delete the unnecessary code Peter Chen
2020-05-22 10:32 ` [PATCH 6/8] usb: host: xhci-plat: add priv flag for skip_phy_initialization Peter Chen
2020-05-22 10:32 ` [PATCH 7/8] usb: cdns3: host: add .suspend_quirk for xhci-plat.c Peter Chen
2020-05-22 10:32 ` [PATCH 8/8] usb: cdns3: host: add xhci_plat_priv's flag skip_phy_initialization Peter Chen

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