linux-kernel - [PATCH v14 2/4] phy: Add media type and speed serdes configuration interfaces

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Message-ID: <20210210085255.2006824-3-steen.hegelund@microchip.com>
Date:   Wed, 10 Feb 2021 09:52:53 +0100
From:   Steen Hegelund <steen.hegelund@...rochip.com>
To:     Kishon Vijay Abraham I <kishon@...com>,
        Vinod Koul <vkoul@...nel.org>
CC:     Steen Hegelund <steen.hegelund@...rochip.com>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Lars Povlsen <lars.povlsen@...rochip.com>,
        Bjarni Jonasson <bjarni.jonasson@...rochip.com>,
        Microchip UNG Driver List <UNGLinuxDriver@...rochip.com>,
        <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        Andrew Lunn <andrew@...n.ch>
Subject: [PATCH v14 2/4] phy: Add media type and speed serdes configuration interfaces

Provide new phy configuration interfaces for media type and speed that
allows allows e.g. PHYs used for ethernet to be configured with this
information.

Signed-off-by: Lars Povlsen <lars.povlsen@...rochip.com>
Signed-off-by: Steen Hegelund <steen.hegelund@...rochip.com>
Reviewed-by: Andrew Lunn <andrew@...n.ch>
Reviewed-by: Alexandre Belloni <alexandre.belloni@...tlin.com>
---
 drivers/phy/phy-core.c  | 30 ++++++++++++++++++++++++++++++
 include/linux/phy/phy.h | 26 ++++++++++++++++++++++++++
 2 files changed, 56 insertions(+)

diff --git a/drivers/phy/phy-core.c b/drivers/phy/phy-core.c
index 71cb10826326..ccb575b13777 100644
--- a/drivers/phy/phy-core.c
+++ b/drivers/phy/phy-core.c
@@ -373,6 +373,36 @@ int phy_set_mode_ext(struct phy *phy, enum phy_mode mode, int submode)
 }
 EXPORT_SYMBOL_GPL(phy_set_mode_ext);
 
+int phy_set_media(struct phy *phy, enum phy_media media)
+{
+	int ret;
+
+	if (!phy || !phy->ops->set_media)
+		return 0;
+
+	mutex_lock(&phy->mutex);
+	ret = phy->ops->set_media(phy, media);
+	mutex_unlock(&phy->mutex);
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(phy_set_media);
+
+int phy_set_speed(struct phy *phy, int speed)
+{
+	int ret;
+
+	if (!phy || !phy->ops->set_speed)
+		return 0;
+
+	mutex_lock(&phy->mutex);
+	ret = phy->ops->set_speed(phy, speed);
+	mutex_unlock(&phy->mutex);
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(phy_set_speed);
+
 int phy_reset(struct phy *phy)
 {
 	int ret;
diff --git a/include/linux/phy/phy.h b/include/linux/phy/phy.h
index e435bdb0bab3..e4fd69a1faa7 100644
--- a/include/linux/phy/phy.h
+++ b/include/linux/phy/phy.h
@@ -44,6 +44,12 @@ enum phy_mode {
 	PHY_MODE_DP
 };
 
+enum phy_media {
+	PHY_MEDIA_DEFAULT,
+	PHY_MEDIA_SR,
+	PHY_MEDIA_DAC,
+};
+
 /**
  * union phy_configure_opts - Opaque generic phy configuration
  *
@@ -64,6 +70,8 @@ union phy_configure_opts {
  * @power_on: powering on the phy
  * @power_off: powering off the phy
  * @set_mode: set the mode of the phy
+ * @set_media: set the media type of the phy (optional)
+ * @set_speed: set the speed of the phy (optional)
  * @reset: resetting the phy
  * @calibrate: calibrate the phy
  * @release: ops to be performed while the consumer relinquishes the PHY
@@ -75,6 +83,8 @@ struct phy_ops {
 	int	(*power_on)(struct phy *phy);
 	int	(*power_off)(struct phy *phy);
 	int	(*set_mode)(struct phy *phy, enum phy_mode mode, int submode);
+	int	(*set_media)(struct phy *phy, enum phy_media media);
+	int	(*set_speed)(struct phy *phy, int speed);
 
 	/**
 	 * @configure:
@@ -215,6 +225,8 @@ int phy_power_off(struct phy *phy);
 int phy_set_mode_ext(struct phy *phy, enum phy_mode mode, int submode);
 #define phy_set_mode(phy, mode) \
 	phy_set_mode_ext(phy, mode, 0)
+int phy_set_media(struct phy *phy, enum phy_media media);
+int phy_set_speed(struct phy *phy, int speed);
 int phy_configure(struct phy *phy, union phy_configure_opts *opts);
 int phy_validate(struct phy *phy, enum phy_mode mode, int submode,
 		 union phy_configure_opts *opts);
@@ -344,6 +356,20 @@ static inline int phy_set_mode_ext(struct phy *phy, enum phy_mode mode,
 #define phy_set_mode(phy, mode) \
 	phy_set_mode_ext(phy, mode, 0)
 
+static inline int phy_set_media(struct phy *phy, enum phy_media media)
+{
+	if (!phy)
+		return 0;
+	return -ENOSYS;
+}
+
+static inline int phy_set_speed(struct phy *phy, int speed)
+{
+	if (!phy)
+		return 0;
+	return -ENOSYS;
+}
+
 static inline enum phy_mode phy_get_mode(struct phy *phy)
 {
 	return PHY_MODE_INVALID;
-- 
2.30.0