diff options
| author | Jonathan Corbet <corbet@lwn.net> | 2007-03-25 16:36:28 +0200 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@infradead.org> | 2007-04-27 20:45:04 +0200 |
| commit | ff68defa08376b6c0482b249b7dfd35241861bce (patch) | |
| tree | 0ba01672c2c3900e61ddd8fd3a8d2c5736a31fa0 /drivers/media/video | |
| parent | V4L/DVB (5466): Fix up some Cafe CCIC delay issues (diff) | |
| download | linux-ff68defa08376b6c0482b249b7dfd35241861bce.tar.xz linux-ff68defa08376b6c0482b249b7dfd35241861bce.zip | |
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>
Diffstat (limited to 'drivers/media/video')
| -rw-r--r-- | drivers/media/video/cafe_ccic.c | 45 |
1 files changed, 44 insertions, 1 deletions
diff --git a/drivers/media/video/cafe_ccic.c b/drivers/media/video/cafe_ccic.c index bfae5d2fd744..4aa360b89ada 100644 --- a/drivers/media/video/cafe_ccic.c +++ b/drivers/media/video/cafe_ccic.c @@ -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 }; |