[PATCH leds v2 04/10] leds: trigger: netdev: support HW offloading
From: Marek Behún <kabel@kernel.org>
Date: 2021-06-01 00:52:16
Also in:
linux-leds
Subsystem:
led subsystem, the rest · Maintainers:
Lee Jones, Pavel Machek, Linus Torvalds
Add support for HW offloading of the netdev trigger. We are only offloading if the link is up and rx/tx blinking is requested. Signed-off-by: Marek Behún <kabel@kernel.org> --- drivers/leds/trigger/ledtrig-netdev.c | 15 +++++++++++---- 1 file changed, 11 insertions(+), 4 deletions(-)
diff --git a/drivers/leds/trigger/ledtrig-netdev.c b/drivers/leds/trigger/ledtrig-netdev.c
index 9a98f9c5b8d0..1f1b63d5a78d 100644
--- a/drivers/leds/trigger/ledtrig-netdev.c
+++ b/drivers/leds/trigger/ledtrig-netdev.c@@ -52,9 +52,17 @@ static void set_baseline_state(struct led_netdev_data *trigger_data) if (!led_cdev->blink_brightness) led_cdev->blink_brightness = led_cdev->max_brightness; - if (!test_bit(NETDEV_LED_MODE_LINKUP, &trigger_data->mode)) + if (!test_bit(NETDEV_LED_MODE_LINKUP, &trigger_data->mode)) { + led_trigger_offload_stop(led_cdev); led_set_brightness(led_cdev, LED_OFF); - else { + } else { + bool blink = test_bit(NETDEV_LED_TX, &trigger_data->mode) || + test_bit(NETDEV_LED_RX, &trigger_data->mode); + /* Try offload to HW only if RX/TX blinking is requested */ + if (blink) + if (!led_trigger_offload(led_cdev)) + return; + if (test_bit(NETDEV_LED_LINK, &trigger_data->mode)) led_set_brightness(led_cdev, led_cdev->blink_brightness);
@@ -64,8 +72,7 @@ static void set_baseline_state(struct led_netdev_data *trigger_data) /* If we are looking for RX/TX start periodically * checking stats */ - if (test_bit(NETDEV_LED_TX, &trigger_data->mode) || - test_bit(NETDEV_LED_RX, &trigger_data->mode)) + if (blink) schedule_delayed_work(&trigger_data->work, 0); } }
--
2.26.3