diff options
Diffstat (limited to 'drivers/media/video/marvell-ccic/mmp-driver.c')
| -rw-r--r-- | drivers/media/video/marvell-ccic/mmp-driver.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/drivers/media/video/marvell-ccic/mmp-driver.c b/drivers/media/video/marvell-ccic/mmp-driver.c index fb0b124..0d64e2d 100644 --- a/drivers/media/video/marvell-ccic/mmp-driver.c +++ b/drivers/media/video/marvell-ccic/mmp-driver.c @@ -26,6 +26,7 @@ #include <linux/io.h> #include <linux/delay.h> #include <linux/list.h> +#include <linux/pm.h> #include "mcam-core.h" @@ -310,10 +311,44 @@ static int mmpcam_platform_remove(struct platform_device *pdev) return mmpcam_remove(cam); } +/* + * Suspend/resume support. + */ +#ifdef CONFIG_PM + +static int mmpcam_suspend(struct platform_device *pdev, pm_message_t state) +{ + struct mmp_camera *cam = mmpcam_find_device(pdev); + + if (state.event != PM_EVENT_SUSPEND) + return 0; + mccic_suspend(&cam->mcam); + return 0; +} + +static int mmpcam_resume(struct platform_device *pdev) +{ + struct mmp_camera *cam = mmpcam_find_device(pdev); + + /* + * Power up unconditionally just in case the core tries to + * touch a register even if nothing was active before; trust + * me, it's better this way. + */ + mmpcam_power_up(&cam->mcam); + return mccic_resume(&cam->mcam); +} + +#endif + static struct platform_driver mmpcam_driver = { .probe = mmpcam_probe, .remove = mmpcam_platform_remove, +#ifdef CONFIG_PM + .suspend = mmpcam_suspend, + .resume = mmpcam_resume, +#endif .driver = { .name = "mmp-camera", .owner = THIS_MODULE |