diff options
Diffstat (limited to 'include/drm/drm_vblank.h')
| -rw-r--r-- | include/drm/drm_vblank.h | 57 |
1 files changed, 48 insertions, 9 deletions
diff --git a/include/drm/drm_vblank.h b/include/drm/drm_vblank.h index c16c44052b3d..733a3e2d1d10 100644 --- a/include/drm/drm_vblank.h +++ b/include/drm/drm_vblank.h @@ -27,12 +27,14 @@ #include <linux/seqlock.h> #include <linux/idr.h> #include <linux/poll.h> +#include <linux/kthread.h> #include <drm/drm_file.h> #include <drm/drm_modes.h> struct drm_device; struct drm_crtc; +struct drm_vblank_work; /** * struct drm_pending_vblank_event - pending vblank event tracking @@ -174,13 +176,13 @@ struct drm_vblank_crtc { unsigned int pipe; /** * @framedur_ns: Frame/Field duration in ns, used by - * drm_calc_vbltimestamp_from_scanoutpos() and computed by + * drm_crtc_vblank_helper_get_vblank_timestamp() and computed by * drm_calc_timestamping_constants(). */ int framedur_ns; /** * @linedur_ns: Line duration in ns, used by - * drm_calc_vbltimestamp_from_scanoutpos() and computed by + * drm_crtc_vblank_helper_get_vblank_timestamp() and computed by * drm_calc_timestamping_constants(). */ int linedur_ns; @@ -190,8 +192,8 @@ struct drm_vblank_crtc { * * Cache of the current hardware display mode. Only valid when @enabled * is set. This is used by helpers like - * drm_calc_vbltimestamp_from_scanoutpos(). We can't just access the - * hardware mode by e.g. looking at &drm_crtc_state.adjusted_mode, + * drm_crtc_vblank_helper_get_vblank_timestamp(). We can't just access + * the hardware mode by e.g. looking at &drm_crtc_state.adjusted_mode, * because that one is really hard to get from interrupt context. */ struct drm_display_mode hwmode; @@ -203,9 +205,28 @@ struct drm_vblank_crtc { * disabling functions multiple times. */ bool enabled; + + /** + * @worker: The &kthread_worker used for executing vblank works. + */ + struct kthread_worker *worker; + + /** + * @pending_work: A list of scheduled &drm_vblank_work items that are + * waiting for a future vblank. + */ + struct list_head pending_work; + + /** + * @work_wait_queue: The wait queue used for signaling that a + * &drm_vblank_work item has either finished executing, or was + * cancelled. + */ + wait_queue_head_t work_wait_queue; }; 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); u64 drm_crtc_vblank_count_and_time(struct drm_crtc *crtc, ktime_t *vblanktime); @@ -226,16 +247,34 @@ void drm_crtc_vblank_off(struct drm_crtc *crtc); void drm_crtc_vblank_reset(struct drm_crtc *crtc); void drm_crtc_vblank_on(struct drm_crtc *crtc); u64 drm_crtc_accurate_vblank_count(struct drm_crtc *crtc); -void drm_vblank_restore(struct drm_device *dev, unsigned int pipe); void drm_crtc_vblank_restore(struct drm_crtc *crtc); -bool drm_calc_vbltimestamp_from_scanoutpos(struct drm_device *dev, - unsigned int pipe, int *max_error, - ktime_t *vblank_time, - bool in_vblank_irq); void drm_calc_timestamping_constants(struct drm_crtc *crtc, const struct drm_display_mode *mode); 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); + +/* + * Helpers for struct drm_crtc_funcs + */ + +typedef bool (*drm_vblank_get_scanout_position_func)(struct drm_crtc *crtc, + bool in_vblank_irq, + int *vpos, int *hpos, + ktime_t *stime, + ktime_t *etime, + const struct drm_display_mode *mode); + +bool +drm_crtc_vblank_helper_get_vblank_timestamp_internal(struct drm_crtc *crtc, + int *max_error, + ktime_t *vblank_time, + bool in_vblank_irq, + drm_vblank_get_scanout_position_func get_scanout_position); +bool drm_crtc_vblank_helper_get_vblank_timestamp(struct drm_crtc *crtc, + int *max_error, + ktime_t *vblank_time, + bool in_vblank_irq); + #endif |