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V4L/DVB (5467): Add suspend/resume support to the Cafe CCIC 

Add suspend/resume support to the Cafe CCIC driver.

Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
This commit is contained in:
Jonathan Corbet 2007-03-25 11:36:28 -03:00 committed by Mauro Carvalho Chehab
parent 5b50ed7ca2
commit ff68defa08
1 changed files with 44 additions and 1 deletions
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45
drivers/media/video/cafe_ccic.c
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@ -37,7 +37,7 @@
#include "cafe_ccic-regs.h"
#define CAFE_VERSION 0x000001
#define CAFE_VERSION 0x000002
/*
@ -2188,6 +2188,45 @@ static void cafe_pci_remove(struct pci_dev *pdev)
}
#ifdef CONFIG_PM
/*
* Basic power management.
*/
static int cafe_pci_suspend(struct pci_dev *pdev, pm_message_t state)
{
struct cafe_camera *cam = cafe_find_by_pdev(pdev);
int ret;
ret = pci_save_state(pdev);
if (ret)
return ret;
cafe_ctlr_stop_dma(cam);
cafe_ctlr_power_down(cam);
pci_disable_device(pdev);
return 0;
}
static int cafe_pci_resume(struct pci_dev *pdev)
{
struct cafe_camera *cam = cafe_find_by_pdev(pdev);
int ret = 0;
ret = pci_restore_state(pdev);
if (ret)
return ret;
pci_enable_device(pdev);
cafe_ctlr_init(cam);
cafe_ctlr_power_up(cam);
set_bit(CF_CONFIG_NEEDED, &cam->flags);
if (cam->state == S_SPECREAD)
cam->state = S_IDLE; /* Don't bother restarting */
else if (cam->state == S_SINGLEREAD || cam->state == S_STREAMING)
ret = cafe_read_setup(cam, cam->state);
return ret;
}
#endif /* CONFIG_PM */
static struct pci_device_id cafe_ids[] = {
@ -2203,6 +2242,10 @@ static struct pci_driver cafe_pci_driver = {
.id_table = cafe_ids,
.probe = cafe_pci_probe,
.remove = cafe_pci_remove,
#ifdef CONFIG_PM
.suspend = cafe_pci_suspend,
.resume = cafe_pci_resume,
#endif
};