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drm_fb_helper.h revision 1.2.4.2 
      1 /*
      2  * Copyright (c) 2006-2009 Red Hat Inc.
      3  * Copyright (c) 2006-2008 Intel Corporation
      4  * Copyright (c) 2007 Dave Airlie <airlied (at) linux.ie>
      5  *
      6  * DRM framebuffer helper functions
      7  *
      8  * Permission to use, copy, modify, distribute, and sell this software and its
      9  * documentation for any purpose is hereby granted without fee, provided that
     10  * the above copyright notice appear in all copies and that both that copyright
     11  * notice and this permission notice appear in supporting documentation, and
     12  * that the name of the copyright holders not be used in advertising or
     13  * publicity pertaining to distribution of the software without specific,
     14  * written prior permission.  The copyright holders make no representations
     15  * about the suitability of this software for any purpose.  It is provided "as
     16  * is" without express or implied warranty.
     17  *
     18  * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
     19  * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
     20  * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
     21  * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
     22  * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
     23  * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
     24  * OF THIS SOFTWARE.
     25  *
     26  * Authors:
     27  *      Dave Airlie <airlied (at) linux.ie>
     28  *      Jesse Barnes <jesse.barnes (at) intel.com>
     29  */
     30 #ifndef DRM_FB_HELPER_H
     31 #define DRM_FB_HELPER_H
     32 
     33 struct drm_fb_helper;
     34 
     35 #include <linux/kgdb.h>
     36 
     37 struct drm_fb_helper_crtc {
     38 	struct drm_mode_set mode_set;
     39 	struct drm_display_mode *desired_mode;
     40 };
     41 
     42 struct drm_fb_helper_surface_size {
     43 	u32 fb_width;
     44 	u32 fb_height;
     45 	u32 surface_width;
     46 	u32 surface_height;
     47 	u32 surface_bpp;
     48 	u32 surface_depth;
     49 };
     50 
     51 struct drm_fb_helper_funcs {
     52 	void (*gamma_set)(struct drm_crtc *crtc, u16 red, u16 green,
     53 			  u16 blue, int regno);
     54 	void (*gamma_get)(struct drm_crtc *crtc, u16 *red, u16 *green,
     55 			  u16 *blue, int regno);
     56 
     57 	int (*fb_probe)(struct drm_fb_helper *helper,
     58 			struct drm_fb_helper_surface_size *sizes);
     59 };
     60 
     61 struct drm_fb_helper_connector {
     62 	struct drm_connector *connector;
     63 	struct drm_cmdline_mode cmdline_mode;
     64 };
     65 
     66 struct drm_fb_helper {
     67 	struct drm_framebuffer *fb;
     68 	struct drm_framebuffer *saved_fb;
     69 	struct drm_device *dev;
     70 	struct drm_display_mode *mode;
     71 	int crtc_count;
     72 	struct drm_fb_helper_crtc *crtc_info;
     73 	int connector_count;
     74 	struct drm_fb_helper_connector **connector_info;
     75 	struct drm_fb_helper_funcs *funcs;
     76 #ifndef __NetBSD__		/* XXX fb info */
     77 	struct fb_info *fbdev;
     78 #endif
     79 	u32 pseudo_palette[17];
     80 	struct list_head kernel_fb_list;
     81 
     82 	/* we got a hotplug but fbdev wasn't running the console
     83 	   delay until next set_par */
     84 	bool delayed_hotplug;
     85 };
     86 
     87 int drm_fb_helper_single_fb_probe(struct drm_fb_helper *helper,
     88 				  int preferred_bpp);
     89 
     90 int drm_fb_helper_init(struct drm_device *dev,
     91 		       struct drm_fb_helper *helper, int crtc_count,
     92 		       int max_conn);
     93 void drm_fb_helper_fini(struct drm_fb_helper *helper);
     94 #ifndef __NetBSD__		/* XXX fb info */
     95 int drm_fb_helper_blank(int blank, struct fb_info *info);
     96 int drm_fb_helper_pan_display(struct fb_var_screeninfo *var,
     97 			      struct fb_info *info);
     98 int drm_fb_helper_set_par(struct fb_info *info);
     99 int drm_fb_helper_check_var(struct fb_var_screeninfo *var,
    100 			    struct fb_info *info);
    101 int drm_fb_helper_setcolreg(unsigned regno,
    102 			    unsigned red,
    103 			    unsigned green,
    104 			    unsigned blue,
    105 			    unsigned transp,
    106 			    struct fb_info *info);
    107 #endif
    108 
    109 bool drm_fb_helper_restore_fbdev_mode(struct drm_fb_helper *fb_helper);
    110 void drm_fb_helper_restore(void);
    111 #ifndef __NetBSD__		/* XXX fb info */
    112 void drm_fb_helper_fill_var(struct fb_info *info, struct drm_fb_helper *fb_helper,
    113 			    uint32_t fb_width, uint32_t fb_height);
    114 void drm_fb_helper_fill_fix(struct fb_info *info, uint32_t pitch,
    115 			    uint32_t depth);
    116 #endif
    117 
    118 #ifndef __NetBSD__		/* XXX fb cmap */
    119 int drm_fb_helper_setcmap(struct fb_cmap *cmap, struct fb_info *info);
    120 #endif
    121 
    122 int drm_fb_helper_hotplug_event(struct drm_fb_helper *fb_helper);
    123 bool drm_fb_helper_initial_config(struct drm_fb_helper *fb_helper, int bpp_sel);
    124 int drm_fb_helper_single_add_all_connectors(struct drm_fb_helper *fb_helper);
    125 #ifndef __NetBSD__		/* XXX fb info */
    126 int drm_fb_helper_debug_enter(struct fb_info *info);
    127 int drm_fb_helper_debug_leave(struct fb_info *info);
    128 #endif
    129 
    130 #endif
    131