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Commit af8350c7 authored by Pierre Ossman's avatar Pierre Ossman
Browse files

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: default avatarPierre Ossman <drzeus@drzeus.cx>
parent 15a0580c

drivers/mmc/core/core.c

+5 −0
Original line number Diff line number Diff line
@@ -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) {

drivers/mmc/core/host.c

+5 −0
Original line number Diff line number Diff line
@@ -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);

include/linux/mmc/host.h

+6 −0
Original line number Diff line number Diff line
@@ -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;

};