[net-next,v3,07/14] net: phy: phy_device: Call into the PHY driver to set LED blinking.

Commit Message

Christian Marangi March 14, 2023, 10:15 a.m. UTC

From: Andrew Lunn <[e-mail]>

Linux LEDs can be requested to perform hardware accelerated
blinking. Pass this to the PHY driver, if it implements the op.

Signed-off-by: Andrew Lunn <[e-mail]>
Signed-off-by: Christian Marangi <[e-mail]>
---
 drivers/net/phy/phy_device.c | 18 ++++++++++++++++++
 include/linux/phy.h          |  8 ++++++++
 2 files changed, 26 insertions(+)

Patch

diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c
index e4df4fcb6b05..ae8ec721353d 100644
--- a/drivers/net/phy/phy_device.c
+++ b/drivers/net/phy/phy_device.c
@@ -2981,6 +2981,22 @@  static int phy_led_set_brightness(struct led_classdev *led_cdev,
 	return err;
 }
 
+static int phy_led_blink_set(struct led_classdev *led_cdev,
+			     unsigned long *delay_on,
+			     unsigned long *delay_off)
+{
+	struct phy_led *phyled = to_phy_led(led_cdev);
+	struct phy_device *phydev = phyled->phydev;
+	int err;
+
+	mutex_lock(&phydev->lock);
+	err = phydev->drv->led_blink_set(phydev, phyled->index,
+					 delay_on, delay_off);
+	mutex_unlock(&phydev->lock);
+
+	return err;
+}
+
 static int of_phy_led(struct phy_device *phydev,
 		      struct device_node *led)
 {
@@ -3004,6 +3020,8 @@  static int of_phy_led(struct phy_device *phydev,
 
 	if (phydev->drv->led_brightness_set)
 		cdev->brightness_set_blocking = phy_led_set_brightness;
+	if (phydev->drv->led_blink_set)
+		cdev->blink_set = phy_led_blink_set;
 	cdev->max_brightness = 1;
 	init_data.devicename = dev_name(&phydev->mdio.dev);
 	init_data.fwnode = of_fwnode_handle(led);
diff --git a/include/linux/phy.h b/include/linux/phy.h
index 83d3ed7485e0..b1ac3c8a97e6 100644
--- a/include/linux/phy.h
+++ b/include/linux/phy.h
@@ -1072,6 +1072,14 @@  struct phy_driver {
 	 */
 	int (*led_brightness_set)(struct phy_device *dev,
 				  u32 index, enum led_brightness value);
+	/* Activate hardware accelerated blink, delays are in milliseconds
+	 * and if both are zero then a sensible default should be chosen.
+	 * The call should adjust the timings in that case and if it can't
+	 * match the values specified exactly.
+	 */
+	int (*led_blink_set)(struct phy_device *dev, u32 index,
+			     unsigned long *delay_on,
+			     unsigned long *delay_off);
 };
 #define to_phy_driver(d) container_of(to_mdio_common_driver(d),		\
 				      struct phy_driver, mdiodrv)