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Commit ff68defa authored by Jonathan Corbet's avatar Jonathan Corbet Committed by Mauro Carvalho Chehab
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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: default avatarJonathan Corbet <corbet@lwn.net>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@infradead.org>
parent 5b50ed7c

drivers/media/video/cafe_ccic.c

+44 −1
Original line number Diff line number Diff line
@@ -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

};