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

Christian Marangi
2023-03-14T16:18:41Z

From: Andrew Lunn <andrew@lunn.ch>

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 <andrew@lunn.ch>
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
---
drivers/net/phy/phy_device.c | 18 ++++++++++++++++++
include/linux/phy.h | 8 ++++++++
2 files changed, 26 insertions(+)

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)