diff options
Diffstat (limited to 'drivers/gpu/drm/drm_irq.c')
| -rw-r--r-- | drivers/gpu/drm/drm_irq.c | 86 |
1 files changed, 59 insertions, 27 deletions
diff --git a/drivers/gpu/drm/drm_irq.c b/drivers/gpu/drm/drm_irq.c index e06cf11ebb4a..9bdca69f754c 100644 --- a/drivers/gpu/drm/drm_irq.c +++ b/drivers/gpu/drm/drm_irq.c @@ -90,6 +90,31 @@ static void store_vblank(struct drm_device *dev, unsigned int pipe, } /* + * "No hw counter" fallback implementation of .get_vblank_counter() hook, + * if there is no useable hardware frame counter available. + */ +static u32 drm_vblank_no_hw_counter(struct drm_device *dev, unsigned int pipe) +{ + WARN_ON_ONCE(dev->max_vblank_count != 0); + return 0; +} + +static u32 __get_vblank_counter(struct drm_device *dev, unsigned int pipe) +{ + if (drm_core_check_feature(dev, DRIVER_MODESET)) { + struct drm_crtc *crtc = drm_crtc_from_index(dev, pipe); + + if (crtc->funcs->get_vblank_counter) + return crtc->funcs->get_vblank_counter(crtc); + } + + if (dev->driver->get_vblank_counter) + return dev->driver->get_vblank_counter(dev, pipe); + + return drm_vblank_no_hw_counter(dev, pipe); +} + +/* * Reset the stored timestamp for the current vblank count to correspond * to the last vblank occurred. * @@ -112,9 +137,9 @@ static void drm_reset_vblank_timestamp(struct drm_device *dev, unsigned int pipe * when drm_vblank_enable() applies the diff */ do { - cur_vblank = dev->driver->get_vblank_counter(dev, pipe); + cur_vblank = __get_vblank_counter(dev, pipe); rc = drm_get_last_vbltimestamp(dev, pipe, &t_vblank, 0); - } while (cur_vblank != dev->driver->get_vblank_counter(dev, pipe) && --count > 0); + } while (cur_vblank != __get_vblank_counter(dev, pipe) && --count > 0); /* * Only reinitialize corresponding vblank timestamp if high-precision query @@ -168,9 +193,9 @@ static void drm_update_vblank_count(struct drm_device *dev, unsigned int pipe, * corresponding vblank timestamp. */ do { - cur_vblank = dev->driver->get_vblank_counter(dev, pipe); + cur_vblank = __get_vblank_counter(dev, pipe); rc = drm_get_last_vbltimestamp(dev, pipe, &t_vblank, flags); - } while (cur_vblank != dev->driver->get_vblank_counter(dev, pipe) && --count > 0); + } while (cur_vblank != __get_vblank_counter(dev, pipe) && --count > 0); if (dev->max_vblank_count != 0) { /* trust the hw counter when it's around */ @@ -275,6 +300,20 @@ u32 drm_accurate_vblank_count(struct drm_crtc *crtc) } EXPORT_SYMBOL(drm_accurate_vblank_count); +static void __disable_vblank(struct drm_device *dev, unsigned int pipe) +{ + if (drm_core_check_feature(dev, DRIVER_MODESET)) { + struct drm_crtc *crtc = drm_crtc_from_index(dev, pipe); + + if (crtc->funcs->disable_vblank) { + crtc->funcs->disable_vblank(crtc); + return; + } + } + + dev->driver->disable_vblank(dev, pipe); +} + /* * Disable vblank irq's on crtc, make sure that last vblank count * of hardware and corresponding consistent software vblank counter @@ -298,7 +337,7 @@ static void vblank_disable_and_save(struct drm_device *dev, unsigned int pipe) * hardware potentially runtime suspended. */ if (vblank->enabled) { - dev->driver->disable_vblank(dev, pipe); + __disable_vblank(dev, pipe); vblank->enabled = false; } @@ -939,7 +978,7 @@ static void send_vblank_event(struct drm_device *dev, e->event.tv_sec = now->tv_sec; e->event.tv_usec = now->tv_usec; - trace_drm_vblank_event_delivered(e->base.pid, e->pipe, + trace_drm_vblank_event_delivered(e->base.file_priv, e->pipe, e->event.sequence); drm_send_event_locked(dev, &e->base); @@ -1027,6 +1066,18 @@ void drm_crtc_send_vblank_event(struct drm_crtc *crtc, } EXPORT_SYMBOL(drm_crtc_send_vblank_event); +static int __enable_vblank(struct drm_device *dev, unsigned int pipe) +{ + if (drm_core_check_feature(dev, DRIVER_MODESET)) { + struct drm_crtc *crtc = drm_crtc_from_index(dev, pipe); + + if (crtc->funcs->enable_vblank) + return crtc->funcs->enable_vblank(crtc); + } + + return dev->driver->enable_vblank(dev, pipe); +} + /** * drm_vblank_enable - enable the vblank interrupt on a CRTC * @dev: DRM device @@ -1052,7 +1103,7 @@ static int drm_vblank_enable(struct drm_device *dev, unsigned int pipe) * timestamps. Filtercode in drm_handle_vblank() will * prevent double-accounting of same vblank interval. */ - ret = dev->driver->enable_vblank(dev, pipe); + ret = __enable_vblank(dev, pipe); DRM_DEBUG("enabling vblank on crtc %u, ret: %d\n", pipe, ret); if (ret) atomic_dec(&vblank->refcount); @@ -1454,7 +1505,6 @@ static int drm_queue_vblank_event(struct drm_device *dev, unsigned int pipe, } e->pipe = pipe; - e->base.pid = current->pid; e->event.base.type = DRM_EVENT_VBLANK; e->event.base.length = sizeof(e->event); e->event.user_data = vblwait->request.signal; @@ -1483,7 +1533,7 @@ static int drm_queue_vblank_event(struct drm_device *dev, unsigned int pipe, DRM_DEBUG("event on vblank count %u, current %u, crtc %u\n", vblwait->request.sequence, seq, pipe); - trace_drm_vblank_event_queued(current->pid, pipe, + trace_drm_vblank_event_queued(file_priv, pipe, vblwait->request.sequence); e->event.sequence = vblwait->request.sequence; @@ -1707,21 +1757,3 @@ bool drm_crtc_handle_vblank(struct drm_crtc *crtc) return drm_handle_vblank(crtc->dev, drm_crtc_index(crtc)); } EXPORT_SYMBOL(drm_crtc_handle_vblank); - -/** - * drm_vblank_no_hw_counter - "No hw counter" implementation of .get_vblank_counter() - * @dev: DRM device - * @pipe: CRTC for which to read the counter - * - * Drivers can plug this into the .get_vblank_counter() function if - * there is no useable hardware frame counter available. - * - * Returns: - * 0 - */ -u32 drm_vblank_no_hw_counter(struct drm_device *dev, unsigned int pipe) -{ - WARN_ON_ONCE(dev->max_vblank_count != 0); - return 0; -} -EXPORT_SYMBOL(drm_vblank_no_hw_counter); |