This patch converts the IDE specific LED trigger to a generic disk activity LED trigger. The libata core is now a trigger source just like before the IDE disk driver. It's merely a replacement of the string ide by disk. The patch is taken from http://dev.gentoo.org/~josejx/ata.patch and is widely used by any ibook/powerbook owners with great satisfaction. Likewise, it is very often used successfully on different ARM platforms. Unlike the original patch, the existing 'ide-disk' trigger is still available for backward compatibility. That reduce the amount of patches in affected device trees out of the mainline kernel. For further development, the new name 'disk-activity' should be used. Cc: Joseph Jezak <josejx@xxxxxxxxxx> Cc: Jörg Sommer <joerg@xxxxxxxxxxxx> Cc: Richard Purdie <rpurdie@xxxxxxxxx> Cc: Jacek Anaszewski <j.anaszewski@xxxxxxxxxxx> Signed-off-by: Stephan Linz <linz@xxxxxxxxxx> --- Changes in v4: - Keep the 'ide-disk' trigger and add a second one for 'disk-activity'. Changes in v3: - Port to kernel 4.x - Split into platform independent and dependent parts. v2: https://patchwork.ozlabs.org/patch/117485/ v1: http://dev.gentoo.org/~josejx/ata.patch --- drivers/ata/libata-core.c | 4 ++++ drivers/ide/ide-disk.c | 2 +- drivers/leds/leds-hp6xx.c | 2 +- drivers/leds/trigger/Kconfig | 8 ++++---- drivers/leds/trigger/Makefile | 2 +- .../trigger/{ledtrig-ide-disk.c => ledtrig-disk.c} | 19 ++++++++++++------- include/linux/leds.h | 6 +++--- 7 files changed, 26 insertions(+), 17 deletions(-) rename drivers/leds/trigger/{ledtrig-ide-disk.c => ledtrig-disk.c} (55%) diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index 6be7770..2eca572 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -69,6 +69,7 @@ #include <asm/unaligned.h> #include <linux/cdrom.h> #include <linux/ratelimit.h> +#include <linux/leds.h> #include <linux/pm_runtime.h> #include <linux/platform_device.h> @@ -5072,6 +5073,9 @@ void ata_qc_complete(struct ata_queued_cmd *qc) { struct ata_port *ap = qc->ap; + /* Trigger the LED (if available) */ + ledtrig_disk_activity(); + /* XXX: New EH and old EH use different mechanisms to * synchronize EH with regular execution path. * diff --git a/drivers/ide/ide-disk.c b/drivers/ide/ide-disk.c index 05dbcce..5ceb176 100644 --- a/drivers/ide/ide-disk.c +++ b/drivers/ide/ide-disk.c @@ -186,7 +186,7 @@ static ide_startstop_t ide_do_rw_disk(ide_drive_t *drive, struct request *rq, BUG_ON(drive->dev_flags & IDE_DFLAG_BLOCKED); BUG_ON(rq->cmd_type != REQ_TYPE_FS); - ledtrig_ide_activity(); + ledtrig_disk_activity(); pr_debug("%s: %sing: block=%llu, sectors=%u\n", drive->name, rq_data_dir(rq) == READ ? "read" : "writ", diff --git a/drivers/leds/leds-hp6xx.c b/drivers/leds/leds-hp6xx.c index a6b8db0..137969f 100644 --- a/drivers/leds/leds-hp6xx.c +++ b/drivers/leds/leds-hp6xx.c @@ -50,7 +50,7 @@ static struct led_classdev hp6xx_red_led = { static struct led_classdev hp6xx_green_led = { .name = "hp6xx:green", - .default_trigger = "ide-disk", + .default_trigger = "disk-activity", .brightness_set = hp6xxled_green_set, .flags = LED_CORE_SUSPENDRESUME, }; diff --git a/drivers/leds/trigger/Kconfig b/drivers/leds/trigger/Kconfig index 9893d91..3f9ddb9 100644 --- a/drivers/leds/trigger/Kconfig +++ b/drivers/leds/trigger/Kconfig @@ -33,12 +33,12 @@ config LEDS_TRIGGER_ONESHOT If unsure, say Y. -config LEDS_TRIGGER_IDE_DISK - bool "LED IDE Disk Trigger" - depends on IDE_GD_ATA +config LEDS_TRIGGER_DISK + bool "LED Disk Trigger" + depends on IDE_GD_ATA || ATA depends on LEDS_TRIGGERS help - This allows LEDs to be controlled by IDE disk activity. + This allows LEDs to be controlled by disk activity. If unsure, say Y. config LEDS_TRIGGER_MTD diff --git a/drivers/leds/trigger/Makefile b/drivers/leds/trigger/Makefile index 8cc64a4..a72c43c 100644 --- a/drivers/leds/trigger/Makefile +++ b/drivers/leds/trigger/Makefile @@ -1,6 +1,6 @@ obj-$(CONFIG_LEDS_TRIGGER_TIMER) += ledtrig-timer.o obj-$(CONFIG_LEDS_TRIGGER_ONESHOT) += ledtrig-oneshot.o -obj-$(CONFIG_LEDS_TRIGGER_IDE_DISK) += ledtrig-ide-disk.o +obj-$(CONFIG_LEDS_TRIGGER_DISK) += ledtrig-disk.o obj-$(CONFIG_LEDS_TRIGGER_MTD) += ledtrig-mtd.o obj-$(CONFIG_LEDS_TRIGGER_HEARTBEAT) += ledtrig-heartbeat.o obj-$(CONFIG_LEDS_TRIGGER_BACKLIGHT) += ledtrig-backlight.o diff --git a/drivers/leds/trigger/ledtrig-ide-disk.c b/drivers/leds/trigger/ledtrig-disk.c similarity index 55% rename from drivers/leds/trigger/ledtrig-ide-disk.c rename to drivers/leds/trigger/ledtrig-disk.c index 15123d3..cd525b4 100644 --- a/drivers/leds/trigger/ledtrig-ide-disk.c +++ b/drivers/leds/trigger/ledtrig-disk.c @@ -1,5 +1,5 @@ /* - * LED IDE-Disk Activity Trigger + * LED Disk Activity Trigger * * Copyright 2006 Openedhand Ltd. * @@ -17,20 +17,25 @@ #define BLINK_DELAY 30 +DEFINE_LED_TRIGGER(ledtrig_disk); DEFINE_LED_TRIGGER(ledtrig_ide); -void ledtrig_ide_activity(void) +void ledtrig_disk_activity(void) { - unsigned long ide_blink_delay = BLINK_DELAY; + unsigned long blink_delay = BLINK_DELAY; + led_trigger_blink_oneshot(ledtrig_disk, + &blink_delay, &blink_delay, 0); led_trigger_blink_oneshot(ledtrig_ide, - &ide_blink_delay, &ide_blink_delay, 0); + &blink_delay, &blink_delay, 0); } -EXPORT_SYMBOL(ledtrig_ide_activity); +EXPORT_SYMBOL(ledtrig_disk_activity); -static int __init ledtrig_ide_init(void) +static int __init ledtrig_disk_init(void) { + led_trigger_register_simple("disk-activity", &ledtrig_disk); led_trigger_register_simple("ide-disk", &ledtrig_ide); + return 0; } -device_initcall(ledtrig_ide_init); +device_initcall(ledtrig_disk_init); diff --git a/include/linux/leds.h b/include/linux/leds.h index d2b1306..28a3ef5 100644 --- a/include/linux/leds.h +++ b/include/linux/leds.h @@ -324,10 +324,10 @@ static inline void *led_get_trigger_data(struct led_classdev *led_cdev) #endif /* CONFIG_LEDS_TRIGGERS */ /* Trigger specific functions */ -#ifdef CONFIG_LEDS_TRIGGER_IDE_DISK -extern void ledtrig_ide_activity(void); +#ifdef CONFIG_LEDS_TRIGGER_DISK +extern void ledtrig_disk_activity(void); #else -static inline void ledtrig_ide_activity(void) {} +static inline void ledtrig_disk_activity(void) {} #endif #ifdef CONFIG_LEDS_TRIGGER_MTD -- 2.8.4 -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
