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1408 serge 1
/*
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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 
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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 
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 *      Jesse Barnes 
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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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1964 serge 33
struct drm_fb_helper;
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struct drm_fb_helper_crtc {
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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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3391 Serge 50
/**
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 * struct drm_fb_helper_funcs - driver callbacks for the fbdev emulation library
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 * @gamma_set: - Set the given gamma lut register on the given crtc.
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 * @gamma_get: - Read the given gamma lut register on the given crtc, used to
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 * 		 save the current lut when force-restoring the fbdev for e.g.
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 * 		 kdbg.
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 * @fb_probe: - Driver callback to allocate and initialize the fbdev info
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 * 		structure. Futhermore it also needs to allocate the drm
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 * 		framebuffer used to back the fbdev.
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 *
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 * Driver callbacks used by the fbdev emulation helper library.
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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_device *dev;
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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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	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_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_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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1964 serge 119
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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1408 serge 125
#endif