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[media] davinci: vpif capture:Add power management support

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

Signed-off-by: Manjunath Hadli <manjunath.hadli@ti.com>
Signed-off-by: Lad, Prabhakar <prabhakar.lad@ti.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Manjunath Hadli 2012-04-13 04:50:55 -03:00 committed by Mauro Carvalho Chehab
parent e9530dac31
commit 3d5946dcfd
1 changed files with 61 additions and 12 deletions
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73
drivers/media/video/davinci/vpif_capture.c
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@ -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,