diff mbox series

[net-next,RFC,v3,4/8] net: phy: add support for driver specific PHY package probe/config

Message ID 20231126015346.25208-5-ansuelsmth@gmail.com (mailing list archive)
State RFC
Delegated to: Netdev Maintainers
Headers show
Series net: phy: Support DT PHY package | expand

Checks

Context Check Description
netdev/tree_selection success Clearly marked for net-next
netdev/apply fail Patch does not apply to net-next

Commit Message

Christian Marangi Nov. 26, 2023, 1:53 a.m. UTC
Add PHY driver specific function to probe and configure PHY package.
These function are run only once before the PHY probe and config_init.

They are used in conjunction with DT PHY package define for basic PHY
package implementation to setup and probe PHY package with simple
functions directly defined in the PHY driver struct.

Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
---
 drivers/net/phy/phy_device.c | 14 ++++++++++++++
 include/linux/phy.h          | 21 +++++++++++++++++++++
 2 files changed, 35 insertions(+)
diff mbox series

Patch

diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c
index 87f06b4ecbfe..d52eb4ff4dac 100644
--- a/drivers/net/phy/phy_device.c
+++ b/drivers/net/phy/phy_device.c
@@ -1246,6 +1246,13 @@  int phy_init_hw(struct phy_device *phydev)
 	if (ret < 0)
 		return ret;
 
+	if (phydev->drv->phy_package_config_init_once &&
+	    phy_package_init_once(phydev)) {
+		ret = phydev->drv->phy_package_config_init_once(phydev);
+		if (ret < 0)
+			return ret;
+	}
+
 	if (phydev->drv->config_init) {
 		ret = phydev->drv->config_init(phydev);
 		if (ret < 0)
@@ -3325,6 +3332,13 @@  static int phy_probe(struct device *dev)
 	/* Deassert the reset signal */
 	phy_device_reset(phydev, 0);
 
+	if (phydev->drv->phy_package_probe_once &&
+	    phy_package_probe_once(phydev)) {
+		err = phydev->drv->phy_package_probe_once(phydev);
+		if (err)
+			goto out;
+	}
+
 	if (phydev->drv->probe) {
 		err = phydev->drv->probe(phydev);
 		if (err)
diff --git a/include/linux/phy.h b/include/linux/phy.h
index c4e6d0b3a86c..7df7a854fdeb 100644
--- a/include/linux/phy.h
+++ b/include/linux/phy.h
@@ -910,12 +910,33 @@  struct phy_driver {
 	 */
 	int (*soft_reset)(struct phy_device *phydev);
 
+	/**
+	 * @phy_package_config_init_once: Driver specific PHY package
+	 *   config init call
+	 * @def: PHY device to use to probe PHY package
+	 *
+	 * Called to initialize the PHY package, including after
+	 * a reset.
+	 * Called BEFORE PHY config_init.
+	 */
+	int (*phy_package_config_init_once)(struct phy_device *dev);
+
 	/**
 	 * @config_init: Called to initialize the PHY,
 	 * including after a reset
 	 */
 	int (*config_init)(struct phy_device *phydev);
 
+	/**
+	 * @phy_package_probe_once: Driver specific PHY package probe
+	 * @def: PHY device to use to probe PHY package
+	 *
+	 * Called during discovery once per PHY package. Used to set
+	 * up device-specific PHY package structures, if any.
+	 * Called BEFORE PHY probe.
+	 */
+	int (*phy_package_probe_once)(struct phy_device *dev);
+
 	/**
 	 * @probe: Called during discovery.  Used to set
 	 * up device-specific structures, if any