[net-next PATCH 04/11] net: phy: phy_device: Call into the PHY driver to set LED brightness.
From: Christian Marangi <ansuelsmth@gmail.com>
Date: 2023-03-07 22:33:57
Also in:
linux-arm-kernel, linux-devicetree, linux-leds, lkml
Subsystem:
ethernet phy library, networking drivers, the rest · Maintainers:
Andrew Lunn, Heiner Kallweit, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
From: Andrew Lunn <andrew@lunn.ch> Linux LEDs can be software controlled via the brightness file in /sys. LED drivers need to implement a brightness_set function which the core will call. Implement an intermediary in phy_device, which will call into the phy driver if it implements the necessary function. Signed-off-by: Andrew Lunn <andrew@lunn.ch> --- drivers/net/phy/phy_device.c | 14 +++++++++++--- include/linux/phy.h | 9 +++++++++ 2 files changed, 20 insertions(+), 3 deletions(-)
diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c
index 8acade42615c..e4df4fcb6b05 100644
--- a/drivers/net/phy/phy_device.c
+++ b/drivers/net/phy/phy_device.c@@ -2967,11 +2967,18 @@ static bool phy_drv_supports_irq(struct phy_driver *phydrv) return phydrv->config_intr && phydrv->handle_interrupt; } -/* Dummy implementation until calls into PHY driver are added */ static int phy_led_set_brightness(struct led_classdev *led_cdev, enum led_brightness value) { - return 0; + 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_brightness_set(phydev, phyled->index, value); + mutex_unlock(&phydev->lock); + + return err; } static int of_phy_led(struct phy_device *phydev,
@@ -2995,7 +3002,8 @@ static int of_phy_led(struct phy_device *phydev, if (err) return err; - cdev->brightness_set_blocking = phy_led_set_brightness; + if (phydev->drv->led_brightness_set) + cdev->brightness_set_blocking = phy_led_set_brightness; 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 1b1efe120f0f..83d3ed7485e0 100644
--- a/include/linux/phy.h
+++ b/include/linux/phy.h@@ -841,6 +841,8 @@ struct phy_led { u32 index; }; +#define to_phy_led(d) container_of(d, struct phy_led, led_cdev) + /** * struct phy_driver - Driver structure for a particular PHY type *
@@ -1063,6 +1065,13 @@ struct phy_driver { /** @get_plca_status: Return the current PLCA status info */ int (*get_plca_status)(struct phy_device *dev, struct phy_plca_status *plca_st); + + /* Set a PHY LED brightness. Index indicates which of the PHYs + * led should be set. Value follows the standard LED class meaning, + * e.g. LED_OFF, LED_HALF, LED_FULL. + */ + int (*led_brightness_set)(struct phy_device *dev, + u32 index, enum led_brightness value); }; #define to_phy_driver(d) container_of(to_mdio_common_driver(d), \ struct phy_driver, mdiodrv)
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2.39.2