DRM子系统中的plane对应显示处理器的layer,负责配置layer的一些属性:format、width、height、stride、显存地址等; 一个crtc可以接收多个plane的输入,如下图所示: 其中: Background Framebuffer为DRM_PLANE_TYPE_PRIMARY类型的plane; Overplay Framerbuffer为DRM_PLANE_TYPE_OVERLAY类型的plane; Cursor Framerbuffer为DRM_PL...
bool no_vblank : 1; /** * @plane_mask: Bitmask of drm_plane_mask(plane) of planes attached to * this CRTC. */ u32 plane_mask; /** * @connector_mask: Bitmask of drm_connector_mask(connector) of * connectors attached to this CRTC. */ u32 connector_mask; /** * @encoder_mask:...
;staticinlinestructlcdc_device*crtc_to_lcdc(structdrm_crtc*crtc){return(structlcdc_device*)crtc->dev->dev_private;}staticinlinestructlcdc_device*plane_to_lcdc(structdrm_plane*plane){return(structlcdc_device*)plane->dev->dev_private;}staticinlinestructlcdc_device*encoder_to_lcdc(structdrm_encoder*...
这些层都是具有电气连接的层,也就是实际的铜层,这些层布的是导线 2. 内电层(Internal Plane)[绿色]: 该类型的层仅用于多层板,主要用于4层以上印制电路板。一般连接到地或电源,成为电源层和地层,也具有电气连接作用,也是实际的铜层,但该层一般情况下不布线,由整片铜膜构成。 3. 锡膏层(Paste Mask): 或...
struct drm_plane_state { /** @plane: backpointer to the plane */ struct drm_plane *plane; /** * @crtc: * * Currently bound CRTC, NULL if disabled. Do not write this directly, * use drm_atomic_set_crtc_for_plane() ...
为plane设置 crtc memory->hRmHandle = hRmHandle; memory->size = size; memory->surfaceParams.layout = layout; funcsTable->grantPermissions = GrantPermissions; to_pci_dev drm_vma_node_offset_addr nvKms->getDisplays 从分配中删除引用 - 句柄现在持有它 ...
Hello. I have problem with DRM overlay scaling. If I use "drmModeSetPlane(fd, plane_id, crtc_id, fb_id, 0, fb_x, fb_y, fb_width, fb_height, 0, 0, width << 16, height << 16);" and (height == fb_height*2) or (height == fb_height*4) the dis...
Avoid null-ptr deref in plane-state check vmwgfx: - Avoid null-ptr deref in surface creation" * tag 'drm-fixes-2024-11-16' of https://gitlab.freedesktop.org/drm/kernel: (27 commits) drm/bridge: tc358768: Fix DSI command tx drm/vmwgfx: avoid null_ptr_deref in vmw_framebuffer_surface...
* &drm_encoder.possible_crtcs and &drm_plane.possible_crtcs fields.*/ static inline uint32_t drm_crtc_mask(const struct drm_crtc *crtc) { return 1 << drm_crtc_index(crtc); } int drm_mode_set_config_internal(struct drm_mode_set *set); ...
Offline DRM is popular for e-books, training courses, etc. where users have purchased a perpetual license to use content and require use in situations where an internet connection may not be readily available (i.e. the beach, a plane, etc.). ...