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Commit dd8572af authored by Manuel Lauss's avatar Manuel Lauss Committed by Pierre Ossman
Browse files

au1xmmc: suspend/resume implementation 



Basic suspend/resume support: disable peripheral on suspend and
reinit on resume.

Tested on Au1200.

Signed-off-by: default avatarManuel Lauss <mano@roarinelk.homelinux.net>
Signed-off-by: default avatarPierre Ossman <drzeus@drzeus.cx>
parent d2f2761b

drivers/mmc/host/au1xmmc.c

+42 −12
Original line number Diff line number Diff line
@@ -1043,7 +1043,7 @@ static int __devinit au1xmmc_probe(struct platform_device *pdev) 
		goto out6;

	}



	platform_set_drvdata(pdev, mmc);

	platform_set_drvdata(pdev, host);



	printk(KERN_INFO DRIVER_NAME ": MMC Controller %d set up at %8.8X"

		" (mode=%s)\n", pdev->id, host->iobase,
@@ -1087,13 +1087,10 @@ static int __devinit au1xmmc_probe(struct platform_device *pdev) 


static int __devexit au1xmmc_remove(struct platform_device *pdev)

{

	struct mmc_host *mmc = platform_get_drvdata(pdev);

	struct au1xmmc_host *host;



	if (mmc) {

		host  = mmc_priv(mmc);

	struct au1xmmc_host *host = platform_get_drvdata(pdev);



		mmc_remove_host(mmc);

	if (host) {

		mmc_remove_host(host->mmc);



#ifdef CONFIG_LEDS_CLASS

		if (host->platdata && host->platdata->led)
@@ -1101,8 +1098,8 @@ static int __devexit au1xmmc_remove(struct platform_device *pdev) 
#endif



		if (host->platdata && host->platdata->cd_setup &&

		    !(mmc->caps & MMC_CAP_NEEDS_POLL))

			host->platdata->cd_setup(mmc, 0);

		    !(host->mmc->caps & MMC_CAP_NEEDS_POLL))

			host->platdata->cd_setup(host->mmc, 0);



		au_writel(0, HOST_ENABLE(host));

		au_writel(0, HOST_CONFIG(host));
@@ -1122,16 +1119,49 @@ static int __devexit au1xmmc_remove(struct platform_device *pdev) 
		release_resource(host->ioarea);

		kfree(host->ioarea);



		mmc_free_host(mmc);

		mmc_free_host(host->mmc);

		platform_set_drvdata(pdev, NULL);

	}

	return 0;

}



#ifdef CONFIG_PM

static int au1xmmc_suspend(struct platform_device *pdev, pm_message_t state)

{

	struct au1xmmc_host *host = platform_get_drvdata(pdev);

	int ret;



	ret = mmc_suspend_host(host->mmc, state);

	if (ret)

		return ret;



	au_writel(0, HOST_CONFIG2(host));

	au_writel(0, HOST_CONFIG(host));

	au_writel(0xffffffff, HOST_STATUS(host));

	au_writel(0, HOST_ENABLE(host));

	au_sync();



	return 0;

}



static int au1xmmc_resume(struct platform_device *pdev)

{

	struct au1xmmc_host *host = platform_get_drvdata(pdev);



	au1xmmc_reset_controller(host);



	return mmc_resume_host(host->mmc);

}

#else

#define au1xmmc_suspend NULL

#define au1xmmc_resume NULL

#endif



static struct platform_driver au1xmmc_driver = {

	.probe         = au1xmmc_probe,

	.remove        = au1xmmc_remove,

	.suspend       = NULL,

	.resume        = NULL,

	.suspend       = au1xmmc_suspend,

	.resume        = au1xmmc_resume,

	.driver        = {

		.name  = DRIVER_NAME,

		.owner = THIS_MODULE,