/* exynos_drm_drv.h * * Copyright (c) 2011 Samsung Electronics Co., Ltd. * Authors: * Inki Dae <inki.dae@samsung.com> * Joonyoung Shim <jy0922.shim@samsung.com> * Seung-Woo Kim <sw0312.kim@samsung.com> * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice (including the next * paragraph) shall be included in all copies or substantial portions of the * Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR * OTHER DEALINGS IN THE SOFTWARE. */ #ifndef _EXYNOS_DRM_DRV_H_ #define _EXYNOS_DRM_DRV_H_ #include <linux/module.h> #include "drm.h" #define MAX_CRTC 2 #define MAX_PLANE 5 #define MAX_FB_BUFFER 3 #define DEFAULT_ZPOS -1 struct drm_device; struct exynos_drm_overlay; struct drm_connector; extern unsigned int drm_vblank_offdelay; /* this enumerates display type. */ enum exynos_drm_output_type { EXYNOS_DISPLAY_TYPE_NONE, /* RGB or CPU Interface. */ EXYNOS_DISPLAY_TYPE_LCD, /* HDMI Interface. */ EXYNOS_DISPLAY_TYPE_HDMI, }; /* * Exynos drm overlay ops structure. * * @mode_set: copy drm overlay info to hw specific overlay info. * @commit: apply hardware specific overlay data to registers. * @disable: disable hardware specific overlay. */ struct exynos_drm_overlay_ops { void (*mode_set)(struct device *subdrv_dev, struct exynos_drm_overlay *overlay); void (*commit)(struct device *subdrv_dev, int zpos); void (*disable)(struct device *subdrv_dev, int zpos); }; /* * Exynos drm common overlay structure. * * @fb_x: offset x on a framebuffer to be displayed. * - the unit is screen coordinates. * @fb_y: offset y on a framebuffer to be displayed. * - the unit is screen coordinates. * @fb_width: width of a framebuffer. * @fb_height: height of a framebuffer. * @crtc_x: offset x on hardware screen. * @crtc_y: offset y on hardware screen. * @crtc_width: window width to be displayed (hardware screen). * @crtc_height: window height to be displayed (hardware screen). * @mode_width: width of screen mode. * @mode_height: height of screen mode. * @refresh: refresh rate. * @scan_flag: interlace or progressive way. * (it could be DRM_MODE_FLAG_*) * @bpp: pixel size.(in bit) * @pixel_format: fourcc pixel format of this overlay * @dma_addr: array of bus(accessed by dma) address to the memory region * allocated for a overlay. * @vaddr: array of virtual memory addresss to this overlay. * @zpos: order of overlay layer(z position). * @default_win: a window to be enabled. * @color_key: color key on or off. * @index_color: if using color key feature then this value would be used * as index color. * @local_path: in case of lcd type, local path mode on or off. * @transparency: transparency on or off. * @activated: activated or not. * * this structure is common to exynos SoC and its contents would be copied * to hardware specific overlay info. */ struct exynos_drm_overlay { unsigned int fb_x; unsigned int fb_y; unsigned int fb_width; unsigned int fb_height; unsigned int crtc_x; unsigned int crtc_y; unsigned int crtc_width; unsigned int crtc_height; unsigned int mode_width; unsigned int mode_height; unsigned int refresh; unsigned int scan_flag; unsigned int bpp; unsigned int pitch; uint32_t pixel_format; dma_addr_t dma_addr[MAX_FB_BUFFER]; void __iomem *vaddr[MAX_FB_BUFFER]; int zpos; bool default_win; bool color_key; unsigned int index_color; bool local_path; bool transparency; bool activated; }; /* * Exynos DRM Display Structure. * - this structure is common to analog tv, digital tv and lcd panel. * * @type: one of EXYNOS_DISPLAY_TYPE_LCD and HDMI. * @is_connected: check for that display is connected or not. * @get_edid: get edid modes from display driver. * @get_panel: get panel object from display driver. * @check_timing: check if timing is valid or not. * @power_on: display device on or off. */ struct exynos_drm_display_ops { enum exynos_drm_output_type type; bool (*is_connected)(struct device *dev); int (*get_edid)(struct device *dev, struct drm_connector *connector, u8 *edid, int len); void *(*get_panel)(struct device *dev); int (*check_timing)(struct device *dev, void *timing); int (*power_on)(struct device *dev, int mode); }; /* * Exynos drm manager ops * * @dpms: control device power. * @apply: set timing, vblank and overlay data to registers. * @mode_set: convert drm_display_mode to hw specific display mode and * would be called by encoder->mode_set(). * @commit: set current hw specific display mode to hw. * @enable_vblank: specific driver callback for enabling vblank interrupt. * @disable_vblank: specific driver callback for disabling vblank interrupt. */ struct exynos_drm_manager_ops { void (*dpms)(struct device *subdrv_dev, int mode); void (*apply)(struct device *subdrv_dev); void (*mode_set)(struct device *subdrv_dev, void *mode); void (*commit)(struct device *subdrv_dev); int (*enable_vblank)(struct device *subdrv_dev); void (*disable_vblank)(struct device *subdrv_dev); }; /* * Exynos drm common manager structure. * * @dev: pointer to device object for subdrv device driver. * sub drivers such as display controller or hdmi driver, * have their own device object. * @ops: pointer to callbacks for exynos drm specific framebuffer. * these callbacks should be set by specific drivers such fimd * or hdmi driver and are used to control hardware global registers. * @overlay_ops: pointer to callbacks for exynos drm specific framebuffer. * these callbacks should be set by specific drivers such fimd * or hdmi driver and are used to control hardware overlay reigsters. * @display: pointer to callbacks for exynos drm specific framebuffer. * these callbacks should be set by specific drivers such fimd * or hdmi driver and are used to control display devices such as * analog tv, digital tv and lcd panel and also get timing data for them. */ struct exynos_drm_manager { struct device *dev; int pipe; struct exynos_drm_manager_ops *ops; struct exynos_drm_overlay_ops *overlay_ops; struct exynos_drm_display_ops *display_ops; }; /* * Exynos drm private structure. */ struct exynos_drm_private { struct drm_fb_helper *fb_helper; /* list head for new event to be added. */ struct list_head pageflip_event_list; /* * created crtc object would be contained at this array and * this array is used to be aware of which crtc did it request vblank. */ struct drm_crtc *crtc[MAX_CRTC]; }; /* * Exynos drm sub driver structure. * * @list: sub driver has its own list object to register to exynos drm driver. * @drm_dev: pointer to drm_device and this pointer would be set * when sub driver calls exynos_drm_subdrv_register(). * @probe: this callback would be called by exynos drm driver after * subdrv is registered to it. * @remove: this callback is used to release resources created * by probe callback. * @manager: subdrv has its own manager to control a hardware appropriately * and we can access a hardware drawing on this manager. * @encoder: encoder object owned by this sub driver. * @connector: connector object owned by this sub driver. */ struct exynos_drm_subdrv { struct list_head list; struct drm_device *drm_dev; int (*probe)(struct drm_device *drm_dev, struct device *dev); void (*remove)(struct drm_device *dev); struct exynos_drm_manager manager; struct drm_encoder *encoder; struct drm_connector *connector; }; /* * this function calls a probe callback registered to sub driver list and * create its own encoder and connector and then set drm_device object * to global one. */ int exynos_drm_device_register(struct drm_device *dev); /* * this function calls a remove callback registered to sub driver list and * destroy its own encoder and connetor. */ int exynos_drm_device_unregister(struct drm_device *dev); /* * this function would be called by sub drivers such as display controller * or hdmi driver to register this sub driver object to exynos drm driver * and when a sub driver is registered to exynos drm driver a probe callback * of the sub driver is called and creates its own encoder and connector * and then fb helper and drm mode group would be re-initialized. */ int exynos_drm_subdrv_register(struct exynos_drm_subdrv *drm_subdrv); /* * this function removes subdrv list from exynos drm driver and fb helper * and drm mode group would be re-initialized. */ int exynos_drm_subdrv_unregister(struct exynos_drm_subdrv *drm_subdrv); #endif