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| author | Pierre Ossman <drzeus@drzeus.cx> | 2007-09-24 07:15:48 +0200 |
|---|---|---|
| committer | Pierre Ossman <drzeus@drzeus.cx> | 2007-09-24 07:15:48 +0200 |
| commit | af8350c756cb48a738474738f7bf8c0e572fa057 (patch) | |
| tree | e46fcb2b0eaf158759bfe75fc22fe01dd2556f3a | |
| parent | 15a0580ced081a0f7dc2deea8a4812bdc5e9a109 (diff) | |
| download | linux-af8350c756cb48a738474738f7bf8c0e572fa057.tar.gz linux-af8350c756cb48a738474738f7bf8c0e572fa057.tar.bz2 linux-af8350c756cb48a738474738f7bf8c0e572fa057.zip | |
mmc: add led trigger
Add a led trigger for each host controller that indicates if there
is a request active on the controller.
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
| -rw-r--r-- | drivers/mmc/core/core.c | 5 | ||||
| -rw-r--r-- | drivers/mmc/core/host.c | 5 | ||||
| -rw-r--r-- | include/linux/mmc/host.h | 6 |
3 files changed, 16 insertions, 0 deletions
diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c index bad39442f8fe..09435e0ec680 100644 --- a/drivers/mmc/core/core.c +++ b/drivers/mmc/core/core.c @@ -18,6 +18,7 @@ #include <linux/delay.h> #include <linux/pagemap.h> #include <linux/err.h> +#include <linux/leds.h> #include <asm/scatterlist.h> #include <linux/scatterlist.h> @@ -92,6 +93,8 @@ void mmc_request_done(struct mmc_host *host, struct mmc_request *mrq) cmd->error = 0; host->ops->request(host, mrq); } else { + led_trigger_event(host->led, LED_OFF); + pr_debug("%s: req done (CMD%u): %d: %08x %08x %08x %08x\n", mmc_hostname(host), cmd->opcode, err, cmd->resp[0], cmd->resp[1], @@ -146,6 +149,8 @@ mmc_start_request(struct mmc_host *host, struct mmc_request *mrq) WARN_ON(!host->claimed); + led_trigger_event(host->led, LED_FULL); + mrq->cmd->error = 0; mrq->cmd->mrq = mrq; if (mrq->data) { diff --git a/drivers/mmc/core/host.c b/drivers/mmc/core/host.c index 37b761891d67..64fbc9759a30 100644 --- a/drivers/mmc/core/host.c +++ b/drivers/mmc/core/host.c @@ -15,6 +15,7 @@ #include <linux/err.h> #include <linux/idr.h> #include <linux/pagemap.h> +#include <linux/leds.h> #include <linux/mmc/host.h> @@ -115,6 +116,8 @@ int mmc_add_host(struct mmc_host *host) snprintf(host->class_dev.bus_id, BUS_ID_SIZE, "mmc%d", host->index); + led_trigger_register_simple(host->class_dev.bus_id, &host->led); + err = device_add(&host->class_dev); if (err) return err; @@ -140,6 +143,8 @@ void mmc_remove_host(struct mmc_host *host) device_del(&host->class_dev); + led_trigger_unregister(host->led); + spin_lock(&mmc_host_lock); idr_remove(&mmc_host_idr, host->index); spin_unlock(&mmc_host_lock); diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h index 76eef94782f8..125eee1407ff 100644 --- a/include/linux/mmc/host.h +++ b/include/linux/mmc/host.h @@ -10,6 +10,8 @@ #ifndef LINUX_MMC_HOST_H #define LINUX_MMC_HOST_H +#include <linux/leds.h> + #include <linux/mmc/core.h> struct mmc_ios { @@ -133,6 +135,10 @@ struct mmc_host { struct task_struct *sdio_irq_thread; atomic_t sdio_irq_thread_abort; +#ifdef CONFIG_LEDS_TRIGGERS + struct led_trigger *led; /* activity led */ +#endif + unsigned long private[0] ____cacheline_aligned; }; |