Add a phylib function for retrieving PHY LED configuration that is specified in the device tree using the generic binding. LEDs can be configured to be 'on' for a certain link speed or to blink when there is TX/RX activity.
Signed-off-by: Matthias Kaehlcke <[email protected]> --- Changes in v4: - patch added to the series --- drivers/net/phy/phy_device.c | 50 ++++++++++++++++++++++++++++++++++++ include/linux/phy.h | 15 +++++++++++ 2 files changed, 65 insertions(+) diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c index 6b5cb87f3866..b4b48de45712 100644 --- a/drivers/net/phy/phy_device.c +++ b/drivers/net/phy/phy_device.c @@ -2188,6 +2188,56 @@ static bool phy_drv_supports_irq(struct phy_driver *phydrv) return phydrv->config_intr && phydrv->ack_interrupt; } +int of_get_phy_led_cfg(struct phy_device *phydev, int led, + struct phy_led_config *cfg) +{ + struct device_node *np, *child; + const char *trigger; + int ret; + + if (!IS_ENABLED(CONFIG_OF_MDIO)) + return -ENOENT; + + np = of_find_node_by_name(phydev->mdio.dev.of_node, "leds"); + if (!np) + return -ENOENT; + + for_each_child_of_node(np, child) { + u32 val; + + if (!of_property_read_u32(child, "reg", &val)) { + if (val == (u32)led) + break; + } + } + + if (!child) + return -ENOENT; + + ret = of_property_read_string(child, "linux,default-trigger", + &trigger); + if (ret) + return ret; + + if (!strcmp(trigger, "phy_link_10m_active")) { + cfg->trigger = PHY_LED_LINK_10M; + } else if (!strcmp(trigger, "phy_link_100m_active")) { + cfg->trigger = PHY_LED_LINK_100M; + } else if (!strcmp(trigger, "phy_link_1g_active")) { + cfg->trigger = PHY_LED_LINK_1G; + } else if (!strcmp(trigger, "phy_link_10g_active")) { + cfg->trigger = PHY_LED_LINK_10G; + } else if (!strcmp(trigger, "phy_activity")) { + cfg->trigger = PHY_LED_ACTIVITY; + } else { + phydev_warn(phydev, "trigger '%s' for LED%d is invalid\n", + trigger, led); + return -EINVAL; + } + + return 0; +} + /** * phy_probe - probe and init a PHY device * @dev: device to probe and init diff --git a/include/linux/phy.h b/include/linux/phy.h index 462b90b73f93..b4693415be31 100644 --- a/include/linux/phy.h +++ b/include/linux/phy.h @@ -1176,6 +1176,21 @@ int phy_ethtool_set_link_ksettings(struct net_device *ndev, const struct ethtool_link_ksettings *cmd); int phy_ethtool_nway_reset(struct net_device *ndev); +enum phy_led_trigger { + PHY_LED_LINK_10M, + PHY_LED_LINK_100M, + PHY_LED_LINK_1G, + PHY_LED_LINK_10G, + PHY_LED_ACTIVITY, +}; + +struct phy_led_config { + enum phy_led_trigger trigger; +}; + +int of_get_phy_led_cfg(struct phy_device *phydev, int led, + struct phy_led_config *cfg); + #if IS_ENABLED(CONFIG_PHYLIB) int __init mdio_bus_init(void); void mdio_bus_exit(void); -- 2.22.0.770.g0f2c4a37fd-goog
