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/* 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 "drm.h"
#define MAX_CRTC 2
struct drm_device;
struct exynos_drm_overlay;
struct drm_connector;
/* 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);
void (*disable)(struct device *subdrv_dev);
};
/*
* 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)
* @paddr: bus(accessed by dma) physical memory address to this overlay
* and this is physically continuous.
* @vaddr: virtual memory addresss to this overlay.
* @buf_off: start offset of framebuffer to be displayed.
* @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;
dma_addr_t paddr;
void __iomem *vaddr;
unsigned int buf_off;
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_timing: get timing object from display driver.
* @check_timing: check if timing is valid or not.
* @power_on: display device on or off.
*/
struct exynos_drm_display {
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_timing)(struct device *dev);
int (*check_timing)(struct device *dev, void *timing);
int (*power_on)(struct device *dev, int mode);
};
/*
* Exynos drm manager ops
*
* @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 (*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 *display;
};
/*
* Exynos drm private structure.
*/
struct exynos_drm_private {
struct drm_fb_helper *fb_helper;
/* for pageflip */
struct list_head pageflip_event_list;
bool pageflip_event;
/*
* 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
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