drm/panel: Add a way for other devices to follow panel state Browse files These days, it's fairly common to see panels that have touchscreens attached to them. The panel and the touchscreen can somewhat be thought of as totally separate devices and, historically, this is how Linux has...
DRM(Direct Rendering Manager)是Linux内核中负责与显卡交互的管理架构,用户空间很方便的利用DRM提供的API,实现3D渲染、视频解码和GPU计算等工作。 可以将Linux下DRM系统分为3部分: DRM相关驱动,可以是LCDC驱动、Panel驱动、GPU驱动。 DRM Core,负责给底层驱动提供功能,对用户空间导出各种接口。 libdrm等上层应用,负责GU...
drm_mode_probed_add(connector, mode);connector->display_info.width_mm = mode->width_mm; connector->display_info.height_mm = mode->height_mm;return 1; }static const struct drm_panel_funcs jadard_jd9365da_funcs = { .prepare = jadard_jd9365da_prepare, ...
> diff --git a/drivers/gpu/drm/panel/panel-sitronix-st7703.c > b/drivers/gpu/drm/panel/panel-sitronix-st7703.c > new file mode 100644 > index 000000000000..092dd73c86d0 > --- /dev/null > +++ b/drivers/gpu/drm/panel/panel-sitronix-st7703.c > @@ -0,0 +1,386 @@ > +// ...
> Add support for it. > > Signed-off-by: Icenowy Zheng <icen...@aosc.io> > Signed-off-by: Ondrej Jirman <meg...@megous.com> (...) > create mode 100644 drivers/gpu/drm/panel/panel-sitronix-st7703.c Nice! > + /* > + * Init sequence was supplied by the panel vendor. ...
rockchip_add_endpoints(dev, &match, port); //将ports下的endpoint 属性也加入数组中 component_...
rk3288在kernel4.4开始使用的显示框架是基于DRM的。DRM全称是Direct Rendering Manager，管理进行显示输出...
struct panel_simple *simpePanel = to_panel_simple(panel); struct PanelData *panelData; struct DispManager *manager = GetDispManager(); HDF_LOGD("HdfDrmPanelSimpleUnprepare"); if (simpePanel->index >= PANEL_MAX) { HDF_LOGE("panel num out of PANEL_MAX"); ...
1.1.4 配置panel驱动 panel驱动位于drivers/gpu/drm/panel/panel-simple.c,如果需要使该文件生效,需要配置CONFIG_PWM_ROCKCHIP,具体参考drivers/gpu/drm/panel/Makefile; obj-$(CONFIG_DRM_PANEL_SIMPLE) += panel-simple.o 因此,我们需要配置内核:
drm_panel drm_panel 不属于 objects 的范畴,它只是一堆回调函数的集合。但它的存在降低了 LCD 驱动与 encoder 驱动之间的耦合度。 耦合的产生: connector 的主要作用就是获取显示参数,所以会在 LCD 驱动中去构造 connector object。但是 connector 初始化时需要 attach 上一个 encoder object,而这个 encoder object...