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* [PATCH v2 1/3] usb: phy: add usb phy notify port status API
@ 2023-05-25  2:26 Stanley Chang
  2023-05-25  2:26 ` [PATCH v2 2/3] phy: realtek: usb: Add driver for the Realtek SoC USB 2.0/3.0 PHY Stanley Chang
                   ` (2 more replies)
  0 siblings, 3 replies; 21+ messages in thread
From: Stanley Chang @ 2023-05-25  2:26 UTC (permalink / raw)
  To: Greg Kroah-Hartman
  Cc: Stanley Chang, Vinod Koul, Kishon Vijay Abraham I, Rob Herring,
	Krzysztof Kozlowski, Conor Dooley, Alan Stern, Michael Grzeschik,
	Bagas Sanjaya, Flavio Suligoi, Matthias Kaehlcke, Mathias Nyman,
	Ray Chi, linux-phy, devicetree, linux-kernel, linux-usb

In Realtek SoC, the parameter of usb phy is designed to can dynamic
tuning base on port status. Therefore, add a notify callback of phy
driver when usb port status change.

Signed-off-by: Stanley Chang <stanley_chang@realtek.com>
---
v1 to v2 change:
    No change
---
 drivers/usb/core/hub.c  | 13 +++++++++++++
 include/linux/usb/phy.h | 14 ++++++++++++++
 2 files changed, 27 insertions(+)

diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index 97a0f8faea6e..b4fbbeae1927 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -614,6 +614,19 @@ static int hub_ext_port_status(struct usb_hub *hub, int port1, int type,
 		ret = 0;
 	}
 	mutex_unlock(&hub->status_mutex);
+
+	if (!ret) {
+		struct usb_device *hdev = hub->hdev;
+
+		if (hdev && !hdev->parent) {
+			struct usb_hcd *hcd = bus_to_hcd(hdev->bus);
+
+			if (hcd->usb_phy)
+				usb_phy_notify_port_status(hcd->usb_phy,
+					    port1 - 1, *status, *change);
+		}
+	}
+
 	return ret;
 }
 
diff --git a/include/linux/usb/phy.h b/include/linux/usb/phy.h
index e4de6bc1f69b..53bf3540098f 100644
--- a/include/linux/usb/phy.h
+++ b/include/linux/usb/phy.h
@@ -144,6 +144,10 @@ struct usb_phy {
 	 */
 	int	(*set_wakeup)(struct usb_phy *x, bool enabled);
 
+	/* notify phy port status change */
+	int	(*notify_port_status)(struct usb_phy *x,
+		int port, u16 portstatus, u16 portchange);
+
 	/* notify phy connect status change */
 	int	(*notify_connect)(struct usb_phy *x,
 			enum usb_device_speed speed);
@@ -316,6 +320,16 @@ usb_phy_set_wakeup(struct usb_phy *x, bool enabled)
 		return 0;
 }
 
+static inline int
+usb_phy_notify_port_status(struct usb_phy *x, int port, u16 portstatus,
+	    u16 portchange)
+{
+	if (x && x->notify_port_status)
+		return x->notify_port_status(x, port, portstatus, portchange);
+	else
+		return 0;
+}
+
 static inline int
 usb_phy_notify_connect(struct usb_phy *x, enum usb_device_speed speed)
 {
-- 
2.34.1


^ permalink raw reply related	[flat|nested] 21+ messages in thread

end of thread, other threads:[~2023-06-02  7:35 UTC | newest]

Thread overview: 21+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2023-05-25  2:26 [PATCH v2 1/3] usb: phy: add usb phy notify port status API Stanley Chang
2023-05-25  2:26 ` [PATCH v2 2/3] phy: realtek: usb: Add driver for the Realtek SoC USB 2.0/3.0 PHY Stanley Chang
2023-05-29 14:25   ` Greg Kroah-Hartman
2023-05-30  1:50     ` Stanley Chang[昌育德]
2023-05-30  7:31       ` Greg Kroah-Hartman
2023-05-30  7:37         ` Stanley Chang[昌育德]
2023-05-25  2:26 ` [PATCH v2 3/3] dt-bindings: phy: realtek: Add the doc about " Stanley Chang
2023-05-29 18:59   ` Conor Dooley
2023-05-30  3:08     ` Stanley Chang[昌育德]
2023-05-30  6:56       ` Conor Dooley
     [not found]       ` <202305310146.34V1kevI7026106@rtits1.realtek.com.tw>
2023-06-01  2:24         ` Stanley Chang[昌育德]
2023-06-01 20:13           ` Conor Dooley
     [not found]   ` <0b2143ca-ead7-c8fa-2e80-a94222af51ca@linaro.org>
2023-06-01 10:49     ` Stanley Chang[昌育德]
2023-06-01 15:32       ` Krzysztof Kozlowski
2023-06-02  3:20         ` Stanley Chang[昌育德]
2023-06-02  7:10           ` Krzysztof Kozlowski
2023-06-02  7:33             ` Stanley Chang[昌育德]
2023-05-29 14:27 ` [PATCH v2 1/3] usb: phy: add usb phy notify port status API Greg Kroah-Hartman
2023-05-30  2:19   ` Stanley Chang[昌育德]
2023-05-30  7:32     ` Greg Kroah-Hartman
2023-05-30  7:38       ` Stanley Chang[昌育德]

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