diff options
Diffstat (limited to 'include/drm/drm_vblank.h')
| -rw-r--r-- | include/drm/drm_vblank.h | 70 |
1 files changed, 68 insertions, 2 deletions
diff --git a/include/drm/drm_vblank.h b/include/drm/drm_vblank.h index 7f3957943dd1..ffa564d79638 100644 --- a/include/drm/drm_vblank.h +++ b/include/drm/drm_vblank.h @@ -25,6 +25,7 @@ #define _DRM_VBLANK_H_ #include <linux/seqlock.h> +#include <linux/hrtimer.h> #include <linux/idr.h> #include <linux/poll.h> #include <linux/kthread.h> @@ -79,6 +80,53 @@ struct drm_pending_vblank_event { }; /** + * struct drm_vblank_crtc_config - vblank configuration for a CRTC + */ +struct drm_vblank_crtc_config { + /** + * @offdelay_ms: Vblank off delay in ms, used to determine how long + * &drm_vblank_crtc.disable_timer waits before disabling. + * + * Defaults to the value of drm_vblank_offdelay in drm_crtc_vblank_on(). + */ + int offdelay_ms; + + /** + * @disable_immediate: See &drm_device.vblank_disable_immediate + * for the exact semantics of immediate vblank disabling. + * + * Additionally, this tracks the disable immediate value per crtc, just + * in case it needs to differ from the default value for a given device. + * + * Defaults to the value of &drm_device.vblank_disable_immediate in + * drm_crtc_vblank_on(). + */ + bool disable_immediate; +}; + +/** + * struct drm_vblank_crtc_timer - vblank timer for a CRTC + */ +struct drm_vblank_crtc_timer { + /** + * @timer: The vblank's high-resolution timer + */ + struct hrtimer timer; + /** + * @interval_lock: Protects @interval + */ + spinlock_t interval_lock; + /** + * @interval: Duration between two vblanks + */ + ktime_t interval; + /** + * @crtc: The timer's CRTC + */ + struct drm_crtc *crtc; +}; + +/** * struct drm_vblank_crtc - vblank tracking for a CRTC * * This structure tracks the vblank state for one CRTC. @@ -99,8 +147,8 @@ struct drm_vblank_crtc { wait_queue_head_t queue; /** * @disable_timer: Disable timer for the delayed vblank disabling - * hysteresis logic. Vblank disabling is controlled through the - * drm_vblank_offdelay module option and the setting of the + * hysteresis logic. Vblank disabling is controlled through + * &drm_vblank_crtc_config.offdelay_ms and the setting of the * &drm_device.max_vblank_count value. */ struct timer_list disable_timer; @@ -199,6 +247,12 @@ struct drm_vblank_crtc { struct drm_display_mode hwmode; /** + * @config: Stores vblank configuration values for a given CRTC. + * Also, see drm_crtc_vblank_on_config(). + */ + struct drm_vblank_crtc_config config; + + /** * @enabled: Tracks the enabling state of the corresponding &drm_crtc to * avoid double-disabling and hence corrupting saved state. Needed by * drivers not using atomic KMS, since those might go through their CRTC @@ -223,8 +277,14 @@ struct drm_vblank_crtc { * cancelled. */ wait_queue_head_t work_wait_queue; + + /** + * @vblank_timer: Holds the state of the vblank timer + */ + struct drm_vblank_crtc_timer vblank_timer; }; +struct drm_vblank_crtc *drm_crtc_vblank_crtc(struct drm_crtc *crtc); int drm_vblank_init(struct drm_device *dev, unsigned int num_crtcs); bool drm_dev_has_vblank(const struct drm_device *dev); u64 drm_crtc_vblank_count(struct drm_crtc *crtc); @@ -246,6 +306,8 @@ void drm_wait_one_vblank(struct drm_device *dev, unsigned int pipe); void drm_crtc_wait_one_vblank(struct drm_crtc *crtc); void drm_crtc_vblank_off(struct drm_crtc *crtc); void drm_crtc_vblank_reset(struct drm_crtc *crtc); +void drm_crtc_vblank_on_config(struct drm_crtc *crtc, + const struct drm_vblank_crtc_config *config); void drm_crtc_vblank_on(struct drm_crtc *crtc); u64 drm_crtc_accurate_vblank_count(struct drm_crtc *crtc); void drm_crtc_vblank_restore(struct drm_crtc *crtc); @@ -256,6 +318,10 @@ wait_queue_head_t *drm_crtc_vblank_waitqueue(struct drm_crtc *crtc); void drm_crtc_set_max_vblank_count(struct drm_crtc *crtc, u32 max_vblank_count); +int drm_crtc_vblank_start_timer(struct drm_crtc *crtc); +void drm_crtc_vblank_cancel_timer(struct drm_crtc *crtc); +void drm_crtc_vblank_get_vblank_timeout(struct drm_crtc *crtc, ktime_t *vblank_time); + /* * Helpers for struct drm_crtc_funcs */ |