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| author | Richard Purdie <rpurdie@rpsys.net> | 2006-03-31 02:31:14 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-03-31 12:18:57 -0800 |
| commit | 8fe833c1b010489b71b082e553b1dfa80ef81061 (patch) | |
| tree | b5d051feb49921a99bf55c8c366dc4ce4d08d29e /drivers/mtd | |
| parent | 6d0cf3e0480f6be9232854387794443d1a904d6d (diff) | |
| download | linux-3.10-8fe833c1b010489b71b082e553b1dfa80ef81061.tar.gz linux-3.10-8fe833c1b010489b71b082e553b1dfa80ef81061.tar.bz2 linux-3.10-8fe833c1b010489b71b082e553b1dfa80ef81061.zip | |
[PATCH] LED: add NAND MTD activity LED trigger
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/mtd')
| -rw-r--r-- | drivers/mtd/nand/nand_base.c | 26 |
1 files changed, 25 insertions, 1 deletions
diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c index 5d222460b42..95e96fa1fce 100644 --- a/drivers/mtd/nand/nand_base.c +++ b/drivers/mtd/nand/nand_base.c @@ -80,6 +80,7 @@ #include <linux/mtd/compatmac.h> #include <linux/interrupt.h> #include <linux/bitops.h> +#include <linux/leds.h> #include <asm/io.h> #ifdef CONFIG_MTD_PARTITIONS @@ -515,6 +516,8 @@ static int nand_block_checkbad (struct mtd_info *mtd, loff_t ofs, int getchip, i return nand_isbad_bbt (mtd, ofs, allowbbt); } +DEFINE_LED_TRIGGER(nand_led_trigger); + /* * Wait for the ready pin, after a command * The timeout is catched later. @@ -524,12 +527,14 @@ static void nand_wait_ready(struct mtd_info *mtd) struct nand_chip *this = mtd->priv; unsigned long timeo = jiffies + 2; + led_trigger_event(nand_led_trigger, LED_FULL); /* wait until command is processed or timeout occures */ do { if (this->dev_ready(mtd)) - return; + break; touch_softlockup_watchdog(); } while (time_before(jiffies, timeo)); + led_trigger_event(nand_led_trigger, LED_OFF); } /** @@ -817,6 +822,8 @@ static int nand_wait(struct mtd_info *mtd, struct nand_chip *this, int state) else timeo += (HZ * 20) / 1000; + led_trigger_event(nand_led_trigger, LED_FULL); + /* Apply this short delay always to ensure that we do wait tWB in * any case on any machine. */ ndelay (100); @@ -840,6 +847,8 @@ static int nand_wait(struct mtd_info *mtd, struct nand_chip *this, int state) } cond_resched(); } + led_trigger_event(nand_led_trigger, LED_OFF); + status = (int) this->read_byte(mtd); return status; } @@ -2724,6 +2733,21 @@ void nand_release (struct mtd_info *mtd) EXPORT_SYMBOL_GPL (nand_scan); EXPORT_SYMBOL_GPL (nand_release); + +static int __init nand_base_init(void) +{ + led_trigger_register_simple("nand-disk", &nand_led_trigger); + return 0; +} + +static void __exit nand_base_exit(void) +{ + led_trigger_unregister_simple(nand_led_trigger); +} + +module_init(nand_base_init); +module_exit(nand_base_exit); + MODULE_LICENSE ("GPL"); MODULE_AUTHOR ("Steven J. Hill <sjhill@realitydiluted.com>, Thomas Gleixner <tglx@linutronix.de>"); MODULE_DESCRIPTION ("Generic NAND flash driver code"); |