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- From 684818189b04b095b34964ed4a3ea5249a840eab Mon Sep 17 00:00:00 2001
- From: Andrew Lunn <[email protected]>
- Date: Mon, 17 Apr 2023 17:17:28 +0200
- Subject: [PATCH 6/9] net: phy: phy_device: Call into the PHY driver to set LED
- brightness
- 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 <[email protected]>
- Signed-off-by: Christian Marangi <[email protected]>
- Reviewed-by: Florian Fainelli <[email protected]>
- Signed-off-by: David S. Miller <[email protected]>
- ---
- drivers/net/phy/phy_device.c | 15 ++++++++++++---
- include/linux/phy.h | 13 +++++++++++++
- 2 files changed, 25 insertions(+), 3 deletions(-)
- --- a/drivers/net/phy/phy_device.c
- +++ b/drivers/net/phy/phy_device.c
- @@ -2934,11 +2934,18 @@ static bool phy_drv_supports_irq(struct
- 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,
- @@ -2955,12 +2962,14 @@ static int of_phy_led(struct phy_device
- return -ENOMEM;
-
- cdev = &phyled->led_cdev;
- + phyled->phydev = phydev;
-
- err = of_property_read_u8(led, "reg", &phyled->index);
- 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);
- --- a/include/linux/phy.h
- +++ b/include/linux/phy.h
- @@ -765,15 +765,19 @@ struct phy_tdr_config {
- * struct phy_led: An LED driven by the PHY
- *
- * @list: List of LEDs
- + * @phydev: PHY this LED is attached to
- * @led_cdev: Standard LED class structure
- * @index: Number of the LED
- */
- struct phy_led {
- struct list_head list;
- + struct phy_device *phydev;
- struct led_classdev led_cdev;
- u8 index;
- };
-
- +#define to_phy_led(d) container_of(d, struct phy_led, led_cdev)
- +
- /**
- * struct phy_driver - Driver structure for a particular PHY type
- *
- @@ -988,6 +992,15 @@ struct phy_driver {
- int (*get_sqi)(struct phy_device *dev);
- /** @get_sqi_max: Get the maximum signal quality indication */
- int (*get_sqi_max)(struct phy_device *dev);
- +
- + /**
- + * @led_brightness_set: 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,
- + u8 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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