From 822c91e72eac568ed8d83765634f00decb45666c Mon Sep 17 00:00:00 2001 From: Heiner Kallweit Date: Mon, 4 Mar 2024 21:57:30 +0100 Subject: leds: trigger: Store brightness set by led_trigger_event() If a simple trigger is assigned to a LED, then the LED may be off until the next led_trigger_event() call. This may be an issue for simple triggers with rare led_trigger_event() calls, e.g. power supply charging indicators (drivers/power/supply/power_supply_leds.c). Therefore persist the brightness value of the last led_trigger_event() call and use this value if the trigger is assigned to a LED. In addition add a getter for the trigger brightness value. Signed-off-by: Heiner Kallweit Reviewed-by: Takashi Iwai Link: https://lore.kernel.org/r/b1358b25-3f30-458d-8240-5705ae007a8a@gmail.com Signed-off-by: Lee Jones --- include/linux/leds.h | 15 +++++++++++++++ 1 file changed, 15 insertions(+) (limited to 'include') diff --git a/include/linux/leds.h b/include/linux/leds.h index db6b114bb3d9..7964ee38b2a3 100644 --- a/include/linux/leds.h +++ b/include/linux/leds.h @@ -455,6 +455,9 @@ struct led_trigger { int (*activate)(struct led_classdev *led_cdev); void (*deactivate)(struct led_classdev *led_cdev); + /* Brightness set by led_trigger_event */ + enum led_brightness brightness; + /* LED-private triggers have this set */ struct led_hw_trigger_type *trigger_type; @@ -508,6 +511,12 @@ static inline void *led_get_trigger_data(struct led_classdev *led_cdev) return led_cdev->trigger_data; } +static inline enum led_brightness +led_trigger_get_brightness(const struct led_trigger *trigger) +{ + return trigger ? trigger->brightness : LED_OFF; +} + #define module_led_trigger(__led_trigger) \ module_driver(__led_trigger, led_trigger_register, \ led_trigger_unregister) @@ -544,6 +553,12 @@ static inline void *led_get_trigger_data(struct led_classdev *led_cdev) return NULL; } +static inline enum led_brightness +led_trigger_get_brightness(const struct led_trigger *trigger) +{ + return LED_OFF; +} + #endif /* CONFIG_LEDS_TRIGGERS */ /* Trigger specific enum */ -- cgit v1.2.3 From ab2ab9e69ef9734b875ce6d43fe3f9f90135daae Mon Sep 17 00:00:00 2001 From: Heiner Kallweit Date: Mon, 4 Mar 2024 21:59:47 +0100 Subject: leds: trigger: audio: Remove this trigger Now that the audio trigger is fully integrated in sound/core/control_led.c, we can remove it here. Signed-off-by: Heiner Kallweit Reviewed-by: Takashi Iwai Link: https://lore.kernel.org/r/1e339779-6d04-4392-8ea2-5592c0fd1aa2@gmail.com Signed-off-by: Lee Jones --- include/linux/leds.h | 14 -------------- 1 file changed, 14 deletions(-) (limited to 'include') diff --git a/include/linux/leds.h b/include/linux/leds.h index 7964ee38b2a3..6300313c46b7 100644 --- a/include/linux/leds.h +++ b/include/linux/leds.h @@ -705,18 +705,4 @@ enum led_audio { NUM_AUDIO_LEDS }; -#if IS_ENABLED(CONFIG_LEDS_TRIGGER_AUDIO) -enum led_brightness ledtrig_audio_get(enum led_audio type); -void ledtrig_audio_set(enum led_audio type, enum led_brightness state); -#else -static inline enum led_brightness ledtrig_audio_get(enum led_audio type) -{ - return LED_OFF; -} -static inline void ledtrig_audio_set(enum led_audio type, - enum led_brightness state) -{ -} -#endif - #endif /* __LINUX_LEDS_H_INCLUDED */ -- cgit v1.2.3 From 4cd47222e435dec8e3787614924174f53fcfb5ae Mon Sep 17 00:00:00 2001 From: George Stark Date: Thu, 11 Apr 2024 19:10:25 +0300 Subject: locking/mutex: Introduce devm_mutex_init() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Using of devm API leads to a certain order of releasing resources. So all dependent resources which are not devm-wrapped should be deleted with respect to devm-release order. Mutex is one of such objects that often is bound to other resources and has no own devm wrapping. Since mutex_destroy() actually does nothing in non-debug builds frequently calling mutex_destroy() is just ignored which is safe for now but wrong formally and can lead to a problem if mutex_destroy() will be extended so introduce devm_mutex_init(). Suggested-by: Christophe Leroy Signed-off-by: George Stark Reviewed-by: Christophe Leroy Reviewed-by: Andy Shevchenko Reviewed-by: Marek Behún Acked-by: Waiman Long Link: https://lore.kernel.org/r/20240411161032.609544-2-gnstark@salutedevices.com Signed-off-by: Lee Jones --- include/linux/mutex.h | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) (limited to 'include') diff --git a/include/linux/mutex.h b/include/linux/mutex.h index 67edc4ca2bee..a561c629d89f 100644 --- a/include/linux/mutex.h +++ b/include/linux/mutex.h @@ -22,6 +22,8 @@ #include #include +struct device; + #ifdef CONFIG_DEBUG_LOCK_ALLOC # define __DEP_MAP_MUTEX_INITIALIZER(lockname) \ , .dep_map = { \ @@ -117,6 +119,31 @@ do { \ } while (0) #endif /* CONFIG_PREEMPT_RT */ +#ifdef CONFIG_DEBUG_MUTEXES + +int __devm_mutex_init(struct device *dev, struct mutex *lock); + +#else + +static inline int __devm_mutex_init(struct device *dev, struct mutex *lock) +{ + /* + * When CONFIG_DEBUG_MUTEXES is off mutex_destroy() is just a nop so + * no really need to register it in the devm subsystem. + */ + return 0; +} + +#endif + +#define devm_mutex_init(dev, mutex) \ +({ \ + typeof(mutex) mutex_ = (mutex); \ + \ + mutex_init(mutex_); \ + __devm_mutex_init(dev, mutex_); \ +}) + /* * See kernel/locking/mutex.c for detailed documentation of these APIs. * Also see Documentation/locking/mutex-design.rst. -- cgit v1.2.3 From 7d36c3573391dcf0da089298a4b5a25c39f7289d Mon Sep 17 00:00:00 2001 From: INAGAKI Hiroshi Date: Sat, 23 Mar 2024 16:36:09 +0900 Subject: dt-bindings: leds: Add LED_FUNCTION_MOBILE for mobile network Add LED_FUNCTION_MOBILE for LEDs that indicate status of mobile network connection. This is useful to distinguish those LEDs from LEDs that indicates status of wired "wan" connection. example (on stock fw): IIJ SA-W2 has "Mobile" LEDs that indicate status (no signal, too low, low, good) of mobile network connection via dongle connected to USB port. - no signal: (none, turned off) - too low: green:mobile & red:mobile (amber, blink) - low: green:mobile & red:mobile (amber, turned on) - good: green:mobile (turned on) Suggested-by: Hauke Mehrtens Signed-off-by: INAGAKI Hiroshi Reviewed-by: Rob Herring Acked-by: Krzysztof Kozlowski Link: https://lore.kernel.org/r/20240323074326.1428-2-musashino.open@gmail.com Signed-off-by: Lee Jones --- include/dt-bindings/leds/common.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include') diff --git a/include/dt-bindings/leds/common.h b/include/dt-bindings/leds/common.h index ecea167930d9..6216ecdb06c7 100644 --- a/include/dt-bindings/leds/common.h +++ b/include/dt-bindings/leds/common.h @@ -90,6 +90,7 @@ #define LED_FUNCTION_INDICATOR "indicator" #define LED_FUNCTION_LAN "lan" #define LED_FUNCTION_MAIL "mail" +#define LED_FUNCTION_MOBILE "mobile" #define LED_FUNCTION_MTD "mtd" #define LED_FUNCTION_PANIC "panic" #define LED_FUNCTION_PROGRAMMING "programming" -- cgit v1.2.3 From 77b9f2d6fd9bf34ec810de6bdad42d7d0a47d31b Mon Sep 17 00:00:00 2001 From: INAGAKI Hiroshi Date: Sat, 23 Mar 2024 16:36:10 +0900 Subject: dt-bindings: leds: Add LED_FUNCTION_SPEED_* for link speed on LAN/WAN Add LED_FUNCTION_SPEED_LAN and LED_FUNCTION_SPEED_WAN for LEDs that indicate link speed of ethernet ports on LAN/WAN. This is useful to distinguish those LEDs from LEDs that indicate link status (up/down). example: Fortinet FortiGate 30E/50E have LEDs that indicate link speed on each of the ethernet ports in addition to LEDs that indicate link status (up/down). - 1000 Mbps: green:speed-(lan|wan)-N - 100 Mbps: amber:speed-(lan|wan)-N - 10 Mbps: (none, turned off) Signed-off-by: INAGAKI Hiroshi Reviewed-by: Rob Herring Link: https://lore.kernel.org/r/20240323074326.1428-3-musashino.open@gmail.com Signed-off-by: Lee Jones --- include/dt-bindings/leds/common.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include') diff --git a/include/dt-bindings/leds/common.h b/include/dt-bindings/leds/common.h index 6216ecdb06c7..82a5769725ce 100644 --- a/include/dt-bindings/leds/common.h +++ b/include/dt-bindings/leds/common.h @@ -96,6 +96,8 @@ #define LED_FUNCTION_PROGRAMMING "programming" #define LED_FUNCTION_RX "rx" #define LED_FUNCTION_SD "sd" +#define LED_FUNCTION_SPEED_LAN "speed-lan" +#define LED_FUNCTION_SPEED_WAN "speed-wan" #define LED_FUNCTION_STANDBY "standby" #define LED_FUNCTION_TORCH "torch" #define LED_FUNCTION_TX "tx" -- cgit v1.2.3