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awilliam
GitHub Repository: awilliam/linux-vfio
 Path: blob/master/include/drm/drm_fb_helper.h
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/*

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 * Copyright (c) 2006-2009 Red Hat Inc.

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 * Copyright (c) 2006-2008 Intel Corporation

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 * Copyright (c) 2007 Dave Airlie <[email protected]>

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 *

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 * DRM framebuffer helper functions

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 *

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 * Permission to use, copy, modify, distribute, and sell this software and its

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 * documentation for any purpose is hereby granted without fee, provided that

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 * the above copyright notice appear in all copies and that both that copyright

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 * notice and this permission notice appear in supporting documentation, and

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 * that the name of the copyright holders not be used in advertising or

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 * publicity pertaining to distribution of the software without specific,

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 * written prior permission.  The copyright holders make no representations

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 * about the suitability of this software for any purpose.  It is provided "as

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 * is" without express or implied warranty.

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 *

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 * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,

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 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO

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 * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR

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 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,

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 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER

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 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE

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 * OF THIS SOFTWARE.

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 *

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 * Authors:

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 *      Dave Airlie <[email protected]>

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 *      Jesse Barnes <[email protected]>

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 */

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#ifndef DRM_FB_HELPER_H

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#define DRM_FB_HELPER_H

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struct drm_fb_helper;

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#include <linux/kgdb.h>

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struct drm_fb_helper_crtc {

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	uint32_t crtc_id;

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	struct drm_mode_set mode_set;

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	struct drm_display_mode *desired_mode;

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};

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struct drm_fb_helper_surface_size {

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	u32 fb_width;

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	u32 fb_height;

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	u32 surface_width;

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	u32 surface_height;

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	u32 surface_bpp;

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	u32 surface_depth;

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};

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struct drm_fb_helper_funcs {

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	void (*gamma_set)(struct drm_crtc *crtc, u16 red, u16 green,

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			  u16 blue, int regno);

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	void (*gamma_get)(struct drm_crtc *crtc, u16 *red, u16 *green,

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			  u16 *blue, int regno);

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	int (*fb_probe)(struct drm_fb_helper *helper,

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			struct drm_fb_helper_surface_size *sizes);

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};

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struct drm_fb_helper_connector {

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	struct drm_connector *connector;

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	struct drm_cmdline_mode cmdline_mode;

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};

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struct drm_fb_helper {

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	struct drm_framebuffer *fb;

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	struct drm_framebuffer *saved_fb;

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	struct drm_device *dev;

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	struct drm_display_mode *mode;

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	int crtc_count;

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	struct drm_fb_helper_crtc *crtc_info;

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	int connector_count;

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	struct drm_fb_helper_connector **connector_info;

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	struct drm_fb_helper_funcs *funcs;

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	int conn_limit;

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	struct fb_info *fbdev;

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	u32 pseudo_palette[17];

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	struct list_head kernel_fb_list;

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	/* we got a hotplug but fbdev wasn't running the console

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	   delay until next set_par */

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	bool delayed_hotplug;

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};

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int drm_fb_helper_single_fb_probe(struct drm_fb_helper *helper,

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				  int preferred_bpp);

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int drm_fb_helper_init(struct drm_device *dev,

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		       struct drm_fb_helper *helper, int crtc_count,

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		       int max_conn);

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void drm_fb_helper_fini(struct drm_fb_helper *helper);

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int drm_fb_helper_blank(int blank, struct fb_info *info);

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int drm_fb_helper_pan_display(struct fb_var_screeninfo *var,

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			      struct fb_info *info);

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int drm_fb_helper_set_par(struct fb_info *info);

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int drm_fb_helper_check_var(struct fb_var_screeninfo *var,

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			    struct fb_info *info);

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int drm_fb_helper_setcolreg(unsigned regno,

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			    unsigned red,

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			    unsigned green,

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			    unsigned blue,

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			    unsigned transp,

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			    struct fb_info *info);

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bool drm_fb_helper_restore_fbdev_mode(struct drm_fb_helper *fb_helper);

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void drm_fb_helper_restore(void);

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void drm_fb_helper_fill_var(struct fb_info *info, struct drm_fb_helper *fb_helper,

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			    uint32_t fb_width, uint32_t fb_height);

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void drm_fb_helper_fill_fix(struct fb_info *info, uint32_t pitch,

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			    uint32_t depth);

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int drm_fb_helper_setcmap(struct fb_cmap *cmap, struct fb_info *info);

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int drm_fb_helper_hotplug_event(struct drm_fb_helper *fb_helper);

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bool drm_fb_helper_initial_config(struct drm_fb_helper *fb_helper, int bpp_sel);

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int drm_fb_helper_single_add_all_connectors(struct drm_fb_helper *fb_helper);

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int drm_fb_helper_debug_enter(struct fb_info *info);

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int drm_fb_helper_debug_leave(struct fb_info *info);

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#endif

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