On Fri, Jan 10, 2020 at 10:21:27AM +0100, Thomas Zimmermann wrote: > All non-legacy users of VBLANK functions in struct drm_driver have been > converted to use the respective interfaces in struct drm_crtc_funcs. The > remaining users of VBLANK callbacks in struct drm_driver are legacy drivers > with userspace modesetting. > > There are no users left of get_vblank_timestamp(), so the callback is > being removed. The other VBLANK callbacks are being moved to the legacy > section at the end of struct drm_driver. > > Signed-off-by: Thomas Zimmermann <tzimmermann@xxxxxxx> I think sprinkling some WARN_ON (in drm_dev_register or wherever) if new drivers try to use the legacy hooks would be really nice. Experience says someone is going to copypaste this stuff around forever otherwise. Reviewed-by: Daniel Vetter <daniel.vetter@xxxxxxxx> > --- > drivers/gpu/drm/drm_vblank.c | 39 +++++--------- > include/drm/drm_drv.h | 101 ++--------------------------------- > 2 files changed, 17 insertions(+), 123 deletions(-) > > diff --git a/drivers/gpu/drm/drm_vblank.c b/drivers/gpu/drm/drm_vblank.c > index 7cf436a4b908..ceff68474d4d 100644 > --- a/drivers/gpu/drm/drm_vblank.c > +++ b/drivers/gpu/drm/drm_vblank.c > @@ -138,10 +138,9 @@ static u32 __get_vblank_counter(struct drm_device *dev, unsigned int pipe) > > if (crtc->funcs->get_vblank_counter) > return crtc->funcs->get_vblank_counter(crtc); > - } > - > - if (dev->driver->get_vblank_counter) > + } else if (dev->driver->get_vblank_counter) { > return dev->driver->get_vblank_counter(dev, pipe); > + } > > return drm_vblank_no_hw_counter(dev, pipe); > } > @@ -334,8 +333,7 @@ u64 drm_crtc_accurate_vblank_count(struct drm_crtc *crtc) > unsigned long flags; > > WARN_ONCE(drm_debug_enabled(DRM_UT_VBL) && > - !crtc->funcs->get_vblank_timestamp && > - !dev->driver->get_vblank_timestamp, > + !crtc->funcs->get_vblank_timestamp, > "This function requires support for accurate vblank timestamps."); > > spin_lock_irqsave(&dev->vblank_time_lock, flags); > @@ -357,13 +355,11 @@ static void __disable_vblank(struct drm_device *dev, unsigned int pipe) > if (WARN_ON(!crtc)) > return; > > - if (crtc->funcs->disable_vblank) { > + if (crtc->funcs->disable_vblank) > crtc->funcs->disable_vblank(crtc); > - return; > - } > + } else { > + dev->driver->disable_vblank(dev, pipe); > } > - > - dev->driver->disable_vblank(dev, pipe); > } > > /* > @@ -791,9 +787,6 @@ drm_get_last_vbltimestamp(struct drm_device *dev, unsigned int pipe, > > ret = crtc->funcs->get_vblank_timestamp(crtc, &max_error, > tvblank, in_vblank_irq); > - } else if (dev->driver->get_vblank_timestamp && (max_error > 0)) { > - ret = dev->driver->get_vblank_timestamp(dev, pipe, &max_error, > - tvblank, in_vblank_irq); > } > > /* GPU high precision timestamp query unsupported or failed. > @@ -1016,9 +1009,11 @@ static int __enable_vblank(struct drm_device *dev, unsigned int pipe) > > if (crtc->funcs->enable_vblank) > return crtc->funcs->enable_vblank(crtc); > + } else if (dev->driver->enable_vblank) { > + return dev->driver->enable_vblank(dev, pipe); > } > > - return dev->driver->enable_vblank(dev, pipe); > + return -EINVAL; > } > > static int drm_vblank_enable(struct drm_device *dev, unsigned int pipe) > @@ -1109,13 +1104,10 @@ static bool __vblank_disable_immediate(struct drm_device *dev, unsigned int pipe > return false; > > crtc = drm_crtc_from_index(dev, pipe); > - if (crtc && crtc->funcs->get_vblank_timestamp) > - return true; > - > - if (dev->driver->get_vblank_timestamp) > - return true; > + if (!crtc || !crtc->funcs->get_vblank_timestamp) > + return false; > > - return false; > + return true; > } > > static void drm_vblank_put(struct drm_device *dev, unsigned int pipe) > @@ -1798,7 +1790,6 @@ static void drm_handle_vblank_events(struct drm_device *dev, unsigned int pipe) > struct drm_pending_vblank_event *e, *t; > ktime_t now; > u64 seq; > - bool high_prec; > > assert_spin_locked(&dev->event_lock); > > @@ -1818,10 +1809,8 @@ static void drm_handle_vblank_events(struct drm_device *dev, unsigned int pipe) > send_vblank_event(dev, e, seq, now); > } > > - high_prec = crtc->funcs->get_vblank_timestamp || > - dev->driver->get_vblank_timestamp; > - > - trace_drm_vblank_event(pipe, seq, now, high_prec); > + trace_drm_vblank_event(pipe, seq, now, > + crtc->funcs->get_vblank_timestamp != NULL); > } > > /** > diff --git a/include/drm/drm_drv.h b/include/drm/drm_drv.h > index b704e252f3b2..e290b3aca6eb 100644 > --- a/include/drm/drm_drv.h > +++ b/include/drm/drm_drv.h > @@ -268,104 +268,6 @@ struct drm_driver { > */ > void (*release) (struct drm_device *); > > - /** > - * @get_vblank_counter: > - * > - * Driver callback for fetching a raw hardware vblank counter for the > - * CRTC specified with the pipe argument. If a device doesn't have a > - * hardware counter, the driver can simply leave the hook as NULL. > - * The DRM core will account for missed vblank events while interrupts > - * where disabled based on system timestamps. > - * > - * Wraparound handling and loss of events due to modesetting is dealt > - * with in the DRM core code, as long as drivers call > - * drm_crtc_vblank_off() and drm_crtc_vblank_on() when disabling or > - * enabling a CRTC. > - * > - * This is deprecated and should not be used by new drivers. > - * Use &drm_crtc_funcs.get_vblank_counter instead. > - * > - * Returns: > - * > - * Raw vblank counter value. > - */ > - u32 (*get_vblank_counter) (struct drm_device *dev, unsigned int pipe); > - > - /** > - * @enable_vblank: > - * > - * Enable vblank interrupts for the CRTC specified with the pipe > - * argument. > - * > - * This is deprecated and should not be used by new drivers. > - * Use &drm_crtc_funcs.enable_vblank instead. > - * > - * Returns: > - * > - * Zero on success, appropriate errno if the given @crtc's vblank > - * interrupt cannot be enabled. > - */ > - int (*enable_vblank) (struct drm_device *dev, unsigned int pipe); > - > - /** > - * @disable_vblank: > - * > - * Disable vblank interrupts for the CRTC specified with the pipe > - * argument. > - * > - * This is deprecated and should not be used by new drivers. > - * Use &drm_crtc_funcs.disable_vblank instead. > - */ > - void (*disable_vblank) (struct drm_device *dev, unsigned int pipe); > - > - /** > - * @get_vblank_timestamp: > - * > - * Called by drm_get_last_vbltimestamp(). Should return a precise > - * timestamp when the most recent VBLANK interval ended or will end. > - * > - * Specifically, the timestamp in @vblank_time should correspond as > - * closely as possible to the time when the first video scanline of > - * the video frame after the end of VBLANK will start scanning out, > - * the time immediately after end of the VBLANK interval. If the > - * @crtc is currently inside VBLANK, this will be a time in the future. > - * If the @crtc is currently scanning out a frame, this will be the > - * past start time of the current scanout. This is meant to adhere > - * to the OpenML OML_sync_control extension specification. > - * > - * Paramters: > - * > - * dev: > - * dev DRM device handle. > - * pipe: > - * crtc for which timestamp should be returned. > - * max_error: > - * Maximum allowable timestamp error in nanoseconds. > - * Implementation should strive to provide timestamp > - * with an error of at most max_error nanoseconds. > - * Returns true upper bound on error for timestamp. > - * vblank_time: > - * Target location for returned vblank timestamp. > - * in_vblank_irq: > - * True when called from drm_crtc_handle_vblank(). Some drivers > - * need to apply some workarounds for gpu-specific vblank irq quirks > - * if flag is set. > - * > - * Returns: > - * > - * True on success, false on failure, which means the core should > - * fallback to a simple timestamp taken in drm_crtc_handle_vblank(). > - * > - * FIXME: > - * > - * We should move this hook to &struct drm_crtc_funcs like all the other > - * vblank hooks. > - */ > - bool (*get_vblank_timestamp) (struct drm_device *dev, unsigned int pipe, > - int *max_error, > - ktime_t *vblank_time, > - bool in_vblank_irq); > - > /** > * @irq_handler: > * > @@ -720,6 +622,9 @@ struct drm_driver { > int (*dma_ioctl) (struct drm_device *dev, void *data, struct drm_file *file_priv); > int (*dma_quiescent) (struct drm_device *); > int (*context_dtor) (struct drm_device *dev, int context); > + u32 (*get_vblank_counter)(struct drm_device *dev, unsigned int pipe); > + int (*enable_vblank)(struct drm_device *dev, unsigned int pipe); > + void (*disable_vblank)(struct drm_device *dev, unsigned int pipe); > int dev_priv_size; > }; > > -- > 2.24.1 > -- Daniel Vetter Software Engineer, Intel Corporation http://blog.ffwll.ch _______________________________________________ amd-gfx mailing list amd-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/amd-gfx