mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-26 08:51:13 +00:00
38 lines
1.4 KiB
Diff
38 lines
1.4 KiB
Diff
|
From 052c38eb17e866c5b4cd43924e7a5e20167b55c0 Mon Sep 17 00:00:00 2001
|
||
|
|
From: Andrew Lunn <andrew@lunn.ch>
|
||
|
|
Date: Mon, 29 May 2023 18:32:32 +0200
|
||
|
|
Subject: [PATCH 02/13] leds: add API to get attached device for LED hw control
|
||
|
|
|
||
|
|
Some specific LED triggers blink the LED based on events from a device
|
||
|
|
or subsystem.
|
||
|
|
For example, an LED could be blinked to indicate a network device is
|
||
|
|
receiving packets, or a disk is reading blocks. To correctly enable and
|
||
|
|
request the hw control of the LED, the trigger has to check if the
|
||
|
|
network interface or block device configured via a /sys/class/led file
|
||
|
|
match the one the LED driver provide for hw control for.
|
||
|
|
|
||
|
|
Provide an API call to get the device which the LED blinks for.
|
||
|
|
|
||
|
|
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
|
||
|
|
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
|
||
|
|
Signed-off-by: David S. Miller <davem@davemloft.net>
|
||
|
|
---
|
||
|
|
include/linux/leds.h | 6 ++++++
|
||
|
|
1 file changed, 6 insertions(+)
|
||
|
|
|
||
|
|
--- a/include/linux/leds.h
|
||
|
|
+++ b/include/linux/leds.h
|
||
|
|
@@ -201,6 +201,12 @@ struct led_classdev {
|
||
|
|
*/
|
||
|
|
int (*hw_control_get)(struct led_classdev *led_cdev,
|
||
|
|
unsigned long *flags);
|
||
|
|
+ /*
|
||
|
|
+ * Get the device this LED blinks in response to.
|
||
|
|
+ * e.g. for a PHY LED, it is the network device. If the LED is
|
||
|
|
+ * not yet associated to a device, return NULL.
|
||
|
|
+ */
|
||
|
|
+ struct device *(*hw_control_get_device)(struct led_classdev *led_cdev);
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifdef CONFIG_LEDS_BRIGHTNESS_HW_CHANGED
|