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98 lines
3.2 KiB
Diff
98 lines
3.2 KiB
Diff
From 684818189b04b095b34964ed4a3ea5249a840eab Mon Sep 17 00:00:00 2001
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From: Andrew Lunn <andrew@lunn.ch>
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Date: Mon, 17 Apr 2023 17:17:28 +0200
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Subject: [PATCH 6/9] net: phy: phy_device: Call into the PHY driver to set LED
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brightness
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Linux LEDs can be software controlled via the brightness file in /sys.
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LED drivers need to implement a brightness_set function which the core
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will call. Implement an intermediary in phy_device, which will call
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into the phy driver if it implements the necessary function.
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Signed-off-by: Andrew Lunn <andrew@lunn.ch>
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Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
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Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
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Signed-off-by: David S. Miller <davem@davemloft.net>
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---
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drivers/net/phy/phy_device.c | 15 ++++++++++++---
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include/linux/phy.h | 13 +++++++++++++
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2 files changed, 25 insertions(+), 3 deletions(-)
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--- a/drivers/net/phy/phy_device.c
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+++ b/drivers/net/phy/phy_device.c
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@@ -2945,11 +2945,18 @@ static bool phy_drv_supports_irq(struct
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return phydrv->config_intr && phydrv->handle_interrupt;
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}
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-/* Dummy implementation until calls into PHY driver are added */
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static int phy_led_set_brightness(struct led_classdev *led_cdev,
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enum led_brightness value)
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{
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- return 0;
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+ struct phy_led *phyled = to_phy_led(led_cdev);
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+ struct phy_device *phydev = phyled->phydev;
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+ int err;
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+
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+ mutex_lock(&phydev->lock);
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+ err = phydev->drv->led_brightness_set(phydev, phyled->index, value);
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+ mutex_unlock(&phydev->lock);
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+
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+ return err;
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}
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static int of_phy_led(struct phy_device *phydev,
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@@ -2966,12 +2973,14 @@ static int of_phy_led(struct phy_device
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return -ENOMEM;
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cdev = &phyled->led_cdev;
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+ phyled->phydev = phydev;
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err = of_property_read_u8(led, "reg", &phyled->index);
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if (err)
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return err;
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- cdev->brightness_set_blocking = phy_led_set_brightness;
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+ if (phydev->drv->led_brightness_set)
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+ cdev->brightness_set_blocking = phy_led_set_brightness;
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cdev->max_brightness = 1;
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init_data.devicename = dev_name(&phydev->mdio.dev);
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init_data.fwnode = of_fwnode_handle(led);
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--- a/include/linux/phy.h
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+++ b/include/linux/phy.h
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@@ -755,15 +755,19 @@ struct phy_tdr_config {
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* struct phy_led: An LED driven by the PHY
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*
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* @list: List of LEDs
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+ * @phydev: PHY this LED is attached to
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* @led_cdev: Standard LED class structure
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* @index: Number of the LED
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*/
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struct phy_led {
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struct list_head list;
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+ struct phy_device *phydev;
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struct led_classdev led_cdev;
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u8 index;
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};
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+#define to_phy_led(d) container_of(d, struct phy_led, led_cdev)
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+
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/**
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* struct phy_driver - Driver structure for a particular PHY type
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*
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@@ -978,6 +982,15 @@ struct phy_driver {
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int (*get_sqi)(struct phy_device *dev);
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/** @get_sqi_max: Get the maximum signal quality indication */
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int (*get_sqi_max)(struct phy_device *dev);
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+
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+ /**
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+ * @led_brightness_set: Set a PHY LED brightness. Index
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+ * indicates which of the PHYs led should be set. Value
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+ * follows the standard LED class meaning, e.g. LED_OFF,
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+ * LED_HALF, LED_FULL.
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+ */
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+ int (*led_brightness_set)(struct phy_device *dev,
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+ u8 index, enum led_brightness value);
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};
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#define to_phy_driver(d) container_of(to_mdio_common_driver(d), \
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struct phy_driver, mdiodrv)
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