forked from luck/tmp_suning_uos_patched
7beb691f1e
At the end of a commit, atomic helpers can generate a fake VBLANK event automatically. Originally implemented for writeback connectors, the functionality can be used by any driver and/or hardware without proper VBLANK interrupt. The patch updates the documentation to make this behaviour official: settings struct drm_crtc_state.no_vblank to true enables automatic generation of fake VBLANK events. The new interface drm_dev_has_vblank() returns true if vblanking has been initialized for a device, or false otherwise. Atomic helpers use this function when initializing no_vblank in the CRTC state in drm_atomic_helper_check_modeset(). If vblanking has been initialized for a device, no_blank is disabled. Otherwise it's enabled. Hence, atomic helpers will automatically send out fake VBLANK events with any driver that did not initialize vblanking. v5: * more precise documentation and commit message v4: * replace drm_crtc_has_vblank() with drm_dev_has_vblank() * add drm_dev_has_vblank() in this patch * move driver changes into separate patches v3: * squash all related changes patches into this patch Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Acked-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/20200129120531.6891-2-tzimmermann@suse.de |
||
|---|---|---|
| .. | ||
| bridge | ||
| i2c | ||
| ttm | ||
| amd_asic_type.h | ||
| drm_agpsupport.h | ||
| drm_atomic_helper.h | ||
| drm_atomic_state_helper.h | ||
| drm_atomic_uapi.h | ||
| drm_atomic.h | ||
| drm_audio_component.h | ||
| drm_auth.h | ||
| drm_blend.h | ||
| drm_bridge.h | ||
| drm_cache.h | ||
| drm_client.h | ||
| drm_color_mgmt.h | ||
| drm_connector.h | ||
| drm_crtc_helper.h | ||
| drm_crtc.h | ||
| drm_damage_helper.h | ||
| drm_debugfs_crc.h | ||
| drm_debugfs.h | ||
| drm_device.h | ||
| drm_displayid.h | ||
| drm_dp_dual_mode_helper.h | ||
| drm_dp_helper.h | ||
| drm_dp_mst_helper.h | ||
| drm_drv.h | ||
| drm_dsc.h | ||
| drm_edid.h | ||
| drm_encoder_slave.h | ||
| drm_encoder.h | ||
| drm_fb_cma_helper.h | ||
| drm_fb_helper.h | ||
| drm_file.h | ||
| drm_fixed.h | ||
| drm_flip_work.h | ||
| drm_format_helper.h | ||
| drm_fourcc.h | ||
| drm_framebuffer.h | ||
| drm_gem_cma_helper.h | ||
| drm_gem_framebuffer_helper.h | ||
| drm_gem_shmem_helper.h | ||
| drm_gem_ttm_helper.h | ||
| drm_gem_vram_helper.h | ||
| drm_gem.h | ||
| drm_hashtab.h | ||
| drm_hdcp.h | ||
| drm_ioctl.h | ||
| drm_irq.h | ||
| drm_lease.h | ||
| drm_legacy.h | ||
| drm_mipi_dbi.h | ||
| drm_mipi_dsi.h | ||
| drm_mm.h | ||
| drm_mode_config.h | ||
| drm_mode_object.h | ||
| drm_modes.h | ||
| drm_modeset_helper_vtables.h | ||
| drm_modeset_helper.h | ||
| drm_modeset_lock.h | ||
| drm_of.h | ||
| drm_panel.h | ||
| drm_pci.h | ||
| drm_pciids.h | ||
| drm_plane_helper.h | ||
| drm_plane.h | ||
| drm_prime.h | ||
| drm_print.h | ||
| drm_probe_helper.h | ||
| drm_property.h | ||
| drm_rect.h | ||
| drm_scdc_helper.h | ||
| drm_self_refresh_helper.h | ||
| drm_simple_kms_helper.h | ||
| drm_syncobj.h | ||
| drm_sysfs.h | ||
| drm_util.h | ||
| drm_utils.h | ||
| drm_vblank.h | ||
| drm_vma_manager.h | ||
| drm_writeback.h | ||
| gma_drm.h | ||
| gpu_scheduler.h | ||
| i915_component.h | ||
| i915_drm.h | ||
| i915_mei_hdcp_interface.h | ||
| i915_pciids.h | ||
| intel_lpe_audio.h | ||
| intel-gtt.h | ||
| spsc_queue.h | ||