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c2c741ccce
Initial backport of at803x PHY driver cleanup. This is in preparation for split and addition of new PHY Family based on at803x needed for ipq807x and other IPQ Series SoC. Other affected patch are automatically refreshed with make target/linux/refresh Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
150 lines
4.8 KiB
Diff
150 lines
4.8 KiB
Diff
From 1dcc03c9a7a824a31eaaecdfaa03542fb25feb6c Mon Sep 17 00:00:00 2001
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From: Andrew Lunn <andrew@lunn.ch>
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Date: Tue, 8 Aug 2023 23:04:34 +0200
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Subject: [PATCH 2/4] net: phy: phy_device: Call into the PHY driver to set LED
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offload
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Linux LEDs can be requested to perform hardware accelerated blinking
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to indicate link, RX, TX etc. Pass the rules for blinking to the PHY
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driver, if it implements the ops needed to determine if a given
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pattern can be offloaded, to offload it, and what the current offload
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is. Additionally implement the op needed to get what device the LED is
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for.
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Reviewed-by: Simon Horman <simon.horman@corigine.com>
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Signed-off-by: Andrew Lunn <andrew@lunn.ch>
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Tested-by: Daniel Golle <daniel@makrotopia.org>
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Link: https://lore.kernel.org/r/20230808210436.838995-3-andrew@lunn.ch
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Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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---
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drivers/net/phy/phy_device.c | 68 ++++++++++++++++++++++++++++++++++++
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include/linux/phy.h | 33 +++++++++++++++++
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2 files changed, 101 insertions(+)
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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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@@ -2964,6 +2964,61 @@ static int phy_led_blink_set(struct led_
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return err;
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}
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+static __maybe_unused struct device *
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+phy_led_hw_control_get_device(struct led_classdev *led_cdev)
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+{
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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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+
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+ if (phydev->attached_dev)
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+ return &phydev->attached_dev->dev;
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+ return NULL;
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+}
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+
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+static int __maybe_unused
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+phy_led_hw_control_get(struct led_classdev *led_cdev,
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+ unsigned long *rules)
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+{
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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_hw_control_get(phydev, phyled->index, rules);
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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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+
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+static int __maybe_unused
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+phy_led_hw_control_set(struct led_classdev *led_cdev,
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+ unsigned long rules)
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+{
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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_hw_control_set(phydev, phyled->index, rules);
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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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+
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+static __maybe_unused int phy_led_hw_is_supported(struct led_classdev *led_cdev,
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+ unsigned long rules)
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+{
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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_hw_is_supported(phydev, phyled->index, rules);
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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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+
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static void phy_leds_unregister(struct phy_device *phydev)
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{
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struct phy_led *phyled;
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@@ -3001,6 +3056,19 @@ static int of_phy_led(struct phy_device
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cdev->brightness_set_blocking = phy_led_set_brightness;
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if (phydev->drv->led_blink_set)
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cdev->blink_set = phy_led_blink_set;
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+
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+#ifdef CONFIG_LEDS_TRIGGERS
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+ if (phydev->drv->led_hw_is_supported &&
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+ phydev->drv->led_hw_control_set &&
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+ phydev->drv->led_hw_control_get) {
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+ cdev->hw_control_is_supported = phy_led_hw_is_supported;
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+ cdev->hw_control_set = phy_led_hw_control_set;
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+ cdev->hw_control_get = phy_led_hw_control_get;
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+ cdev->hw_control_trigger = "netdev";
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+ }
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+
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+ cdev->hw_control_get_device = phy_led_hw_control_get_device;
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+#endif
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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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@@ -1022,6 +1022,39 @@ struct phy_driver {
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int (*led_blink_set)(struct phy_device *dev, u8 index,
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unsigned long *delay_on,
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unsigned long *delay_off);
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+ /**
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+ * @led_hw_is_supported: Can the HW support the given rules.
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+ * @dev: PHY device which has the LED
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+ * @index: Which LED of the PHY device
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+ * @rules The core is interested in these rules
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+ *
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+ * Return 0 if yes, -EOPNOTSUPP if not, or an error code.
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+ */
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+ int (*led_hw_is_supported)(struct phy_device *dev, u8 index,
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+ unsigned long rules);
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+ /**
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+ * @led_hw_control_set: Set the HW to control the LED
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+ * @dev: PHY device which has the LED
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+ * @index: Which LED of the PHY device
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+ * @rules The rules used to control the LED
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+ *
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+ * Returns 0, or a an error code.
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+ */
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+ int (*led_hw_control_set)(struct phy_device *dev, u8 index,
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+ unsigned long rules);
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+ /**
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+ * @led_hw_control_get: Get how the HW is controlling the LED
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+ * @dev: PHY device which has the LED
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+ * @index: Which LED of the PHY device
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+ * @rules Pointer to the rules used to control the LED
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+ *
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+ * Set *@rules to how the HW is currently blinking. Returns 0
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+ * on success, or a error code if the current blinking cannot
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+ * be represented in rules, or some other error happens.
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+ */
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+ int (*led_hw_control_get)(struct phy_device *dev, u8 index,
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+ unsigned long *rules);
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+
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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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