mirror of https://lore.kernel.org/lkml/
 help / color / mirror / Atom feed
* [PATCH v1 1/4] phy: core: add notify_connect and notify_disconnect callback
@ 2023-11-07  6:33 Stanley Chang
  2023-11-07  6:33 ` [PATCH v1 2/4] phy: realtek: usb2: Remove the legacy usb phy implementation Stanley Chang
                   ` (2 more replies)
  0 siblings, 3 replies; 4+ messages in thread
From: Stanley Chang @ 2023-11-07  6:33 UTC (permalink / raw)
  To: Greg Kroah-Hartman
  Cc: Stanley Chang, Vinod Koul, Johan Hovold, Kishon Vijay Abraham I,
	Rob Herring, Jinjie Ruan, Alan Stern, Yang Yingliang,
	Ricardo Cañuelo, Roy Luo, Heikki Krogerus, Ray Chi,
	linux-phy, 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 connection/disconnection change.

Signed-off-by: Stanley Chang <stanley_chang@realtek.com>
---
 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	[flat|nested] 4+ messages in thread
end of thread, other threads:[~2023-11-07  6:37 UTC | newest]

Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2023-11-07  6:33 [PATCH v1 1/4] phy: core: add notify_connect and notify_disconnect callback Stanley Chang
2023-11-07  6:33 ` [PATCH v1 2/4] phy: realtek: usb2: Remove the legacy usb phy implementation Stanley Chang
2023-11-07  6:33 ` [PATCH v1 3/4] phy: realtek: usb3: " Stanley Chang
2023-11-07  6:33 ` [PATCH v1 4/4] usb: core: add phy notify connect and disconnect Stanley Chang

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®