diff mbox series

[v3,RESEND,1/4] phy: core: add notify_connect and notify_disconnect callback

Message ID 20231207074022.14116-1-stanley_chang@realtek.com
State Superseded
Headers show
Series [v3,RESEND,1/4] phy: core: add notify_connect and notify_disconnect callback | expand

Commit Message

Stanley Chang[昌育德] Dec. 7, 2023, 7:38 a.m. UTC 
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>
---
RESEND:
    Because there is no extcon device provided in the USB framework to
    notify connect and disconnect.
    Therefore, I added the notification connection/disconnection based
    on the generic phy. So I no use the EXTCON framework for notifying
    connect/disconnect.
v2 to v3:
    No change
v1 to v2:
    No change
---
 drivers/phy/phy-core.c  | 47 +++++++++++++++++++++++++++++++++++++++++
 include/linux/phy/phy.h | 18 ++++++++++++++++
 2 files changed, 65 insertions(+)

Comments

Sergei Shtylyov Dec. 7, 2023, 8:54 a.m. UTC | #1 
On 12/7/23 10:38 AM, Stanley Chang wrote:

> 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

   To be able to do dynamic tuning based in the port status, maybe?

> driver when usb connection/disconnection change.
> 
> Signed-off-by: Stanley Chang <stanley_chang@realtek.com>
[...]
> 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

   Notification?

> + * @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.

   If the PHY needs to get the connection status, maybe?

> + * 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

   Notification?

> + * @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.

   If the PHY needs to get the connection status, maybe?

[...]
> 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
[...]

MBR, Sergey
diff mbox series

Patch

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)
 {