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Commit 3d5946dc authored by Manjunath Hadli's avatar Manjunath Hadli Committed by Mauro Carvalho Chehab
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[media] davinci: vpif capture:Add power management support 



Implement power management operations - suspend and resume as part of
dev_pm_ops for VPIF capture driver.

Signed-off-by: default avatarManjunath Hadli <manjunath.hadli@ti.com>
Signed-off-by: default avatarLad, Prabhakar <prabhakar.lad@ti.com>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@redhat.com>
parent e9530dac

drivers/media/video/davinci/vpif_capture.c

+61 −12
Original line number Diff line number Diff line
@@ -2312,26 +2312,70 @@ static int vpif_remove(struct platform_device *device) 
	return 0;

}



#ifdef CONFIG_PM

/**

 * vpif_suspend: vpif device suspend

 *

 * TODO: Add suspend code here

 */

static int

vpif_suspend(struct device *dev)

static int vpif_suspend(struct device *dev)

{

	return -1;



	struct common_obj *common;

	struct channel_obj *ch;

	int i;



	for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) {

		/* Get the pointer to the channel object */

		ch = vpif_obj.dev[i];

		common = &ch->common[VPIF_VIDEO_INDEX];

		mutex_lock(&common->lock);

		if (ch->usrs && common->io_usrs) {

			/* Disable channel */

			if (ch->channel_id == VPIF_CHANNEL0_VIDEO) {

				enable_channel0(0);

				channel0_intr_enable(0);

			}

			if (ch->channel_id == VPIF_CHANNEL1_VIDEO ||

			    common->started == 2) {

				enable_channel1(0);

				channel1_intr_enable(0);

			}

		}

		mutex_unlock(&common->lock);

	}



/**

	return 0;

}



/*

 * vpif_resume: vpif device suspend

 *

 * TODO: Add resume code here

 */

static int

vpif_resume(struct device *dev)

static int vpif_resume(struct device *dev)

{

	return -1;

	struct common_obj *common;

	struct channel_obj *ch;

	int i;



	for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) {

		/* Get the pointer to the channel object */

		ch = vpif_obj.dev[i];

		common = &ch->common[VPIF_VIDEO_INDEX];

		mutex_lock(&common->lock);

		if (ch->usrs && common->io_usrs) {

			/* Disable channel */

			if (ch->channel_id == VPIF_CHANNEL0_VIDEO) {

				enable_channel0(1);

				channel0_intr_enable(1);

			}

			if (ch->channel_id == VPIF_CHANNEL1_VIDEO ||

			    common->started == 2) {

				enable_channel1(1);

				channel1_intr_enable(1);

			}

		}

		mutex_unlock(&common->lock);

	}



	return 0;

}



static const struct dev_pm_ops vpif_dev_pm_ops = {
@@ -2339,11 +2383,16 @@ static const struct dev_pm_ops vpif_dev_pm_ops = { 
	.resume = vpif_resume,

};



#define vpif_pm_ops (&vpif_dev_pm_ops)

#else

#define vpif_pm_ops NULL

#endif



static __refdata struct platform_driver vpif_driver = {

	.driver	= {

		.name	= "vpif_capture",

		.owner	= THIS_MODULE,

		.pm = &vpif_dev_pm_ops,

		.pm	= vpif_pm_ops,

	},

	.probe = vpif_probe,

	.remove = vpif_remove,