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* [PATCH v2 1/4] phy: core: add notify_connect and notify_disconnect callback
@ 2023-11-07  8:31 Stanley Chang
  2023-11-07  8:31 ` [PATCH v2 2/4] phy: realtek: usb: add new driver for the Realtek RTD SoC USB 2.0 PHY Stanley Chang
                   ` (2 more replies)
  0 siblings, 3 replies; 7+ messages in thread
From: Stanley Chang @ 2023-11-07  8:31 UTC (permalink / raw)
  To: Greg Kroah-Hartman
  Cc: Stanley Chang, Vinod Koul, Johan Hovold, Kishon Vijay Abraham I,
	Geert Uytterhoeven, Rob Herring, Jinjie Ruan, Alan Stern,
	Yang Yingliang, Ray Chi, Heikki Krogerus, Flavio Suligoi,
	Ricardo Cañuelo, Roy Luo, linux-kernel, linux-phy, 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 connection/disconnection change.

Signed-off-by: Stanley Chang <stanley_chang@realtek.com>
---
v1 to v2:
    No change
---
 drivers/phy/phy-core.c  | 47 +++++++++++++++++++++++++++++++++++++++++
 include/linux/phy/phy.h | 18 ++++++++++++++++
 2 files changed, 65 insertions(+)

diff --git a/drivers/phy/phy-core.c b/drivers/phy/phy-core.c
index 96a0b1e111f3..a84ad4896b7f 100644
--- a/drivers/phy/phy-core.c
+++ b/drivers/phy/phy-core.c
@@ -489,6 +489,53 @@ int phy_calibrate(struct phy *phy)
 }
 EXPORT_SYMBOL_GPL(phy_calibrate);
 
+/**
+ * phy_notify_connect() - phy connect notify
+ * @phy: the phy returned by phy_get()
+ * @port: the port index for connect
+ *
+ * If phy need the get connection status, the callback can be used.
+ * Returns: %0 if successful, a negative error code otherwise
+ */
+int phy_notify_connect(struct phy *phy, int port)
+{
+	int ret;
+
+	if (!phy || !phy->ops->connect)
+		return 0;
+
+	mutex_lock(&phy->mutex);
+	ret = phy->ops->connect(phy, port);
+	mutex_unlock(&phy->mutex);
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(phy_notify_connect);
+
+/**
+ * phy_notify_disconnect() - phy disconnect notify
+ * @phy: the phy returned by phy_get()
+ * @port: the port index for disconnect
+ *
+ * If phy need the get disconnection status, the callback can be used.
+ *
+ * Returns: %0 if successful, a negative error code otherwise
+ */
+int phy_notify_disconnect(struct phy *phy, int port)
+{
+	int ret;
+
+	if (!phy || !phy->ops->disconnect)
+		return 0;
+
+	mutex_lock(&phy->mutex);
+	ret = phy->ops->disconnect(phy, port);
+	mutex_unlock(&phy->mutex);
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(phy_notify_disconnect);
+
 /**
  * phy_configure() - Changes the phy parameters
  * @phy: the phy returned by phy_get()
diff --git a/include/linux/phy/phy.h b/include/linux/phy/phy.h
index f6d607ef0e80..cf98cb29ddaa 100644
--- a/include/linux/phy/phy.h
+++ b/include/linux/phy/phy.h
@@ -122,6 +122,8 @@ struct phy_ops {
 			    union phy_configure_opts *opts);
 	int	(*reset)(struct phy *phy);
 	int	(*calibrate)(struct phy *phy);
+	int	(*connect)(struct phy *phy, int port);
+	int	(*disconnect)(struct phy *phy, int port);
 	void	(*release)(struct phy *phy);
 	struct module *owner;
 };
@@ -243,6 +245,8 @@ static inline enum phy_mode phy_get_mode(struct phy *phy)
 }
 int phy_reset(struct phy *phy);
 int phy_calibrate(struct phy *phy);
+int phy_notify_connect(struct phy *phy, int port);
+int phy_notify_disconnect(struct phy *phy, int port);
 static inline int phy_get_bus_width(struct phy *phy)
 {
 	return phy->attrs.bus_width;
@@ -396,6 +400,20 @@ static inline int phy_calibrate(struct phy *phy)
 	return -ENOSYS;
 }
 
+static inline int phy_notify_connect(struct phy *phy, int index)
+{
+	if (!phy)
+		return 0;
+	return -ENOSYS;
+}
+
+static inline int phy_notify_disconnect(struct phy *phy, int index)
+{
+	if (!phy)
+		return 0;
+	return -ENOSYS;
+}
+
 static inline int phy_configure(struct phy *phy,
 				union phy_configure_opts *opts)
 {
-- 
2.34.1


^ permalink raw reply related	[flat|nested] 7+ messages in thread
end of thread, other threads:[~2023-11-10  3:00 UTC | newest]

Thread overview: 7+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2023-11-07  8:31 [PATCH v2 1/4] phy: core: add notify_connect and notify_disconnect callback Stanley Chang
2023-11-07  8:31 ` [PATCH v2 2/4] phy: realtek: usb: add new driver for the Realtek RTD SoC USB 2.0 PHY Stanley Chang
2023-11-09 16:36   ` Krzysztof Kozlowski
2023-11-10  2:58     ` Stanley Chang[昌育德]
2023-11-07  8:31 ` [PATCH v2 3/4] phy: realtek: usb: add new driver for the Realtek RTD SoC USB 3.0 PHY Stanley Chang
2023-11-09 16:37   ` Krzysztof Kozlowski
2023-11-07  8:31 ` [PATCH v2 4/4] usb: core: add phy notify connect and disconnect Stanley Chang

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