drm_fb_helper.h revision 1.4
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 #ifdef __NetBSD__ 38 #include <dev/wsfb/genfbvar.h> 39 #endif 40 41 struct drm_fb_helper_crtc { 42 struct drm_mode_set mode_set; 43 struct drm_display_mode *desired_mode; 44 }; 45 46 struct drm_fb_helper_surface_size { 47 u32 fb_width; 48 u32 fb_height; 49 u32 surface_width; 50 u32 surface_height; 51 u32 surface_bpp; 52 u32 surface_depth; 53 }; 54 55 /** 56 * struct drm_fb_helper_funcs - driver callbacks for the fbdev emulation library 57 * @gamma_set: Set the given gamma lut register on the given crtc. 58 * @gamma_get: Read the given gamma lut register on the given crtc, used to 59 * save the current lut when force-restoring the fbdev for e.g. 60 * kdbg. 61 * @fb_probe: Driver callback to allocate and initialize the fbdev info 62 * structure. Furthermore it also needs to allocate the drm 63 * framebuffer used to back the fbdev. 64 * @initial_config: Setup an initial fbdev display configuration 65 * 66 * Driver callbacks used by the fbdev emulation helper library. 67 */ 68 struct drm_fb_helper_funcs { 69 void (*gamma_set)(struct drm_crtc *crtc, u16 red, u16 green, 70 u16 blue, int regno); 71 void (*gamma_get)(struct drm_crtc *crtc, u16 *red, u16 *green, 72 u16 *blue, int regno); 73 74 int (*fb_probe)(struct drm_fb_helper *helper, 75 struct drm_fb_helper_surface_size *sizes); 76 bool (*initial_config)(struct drm_fb_helper *fb_helper, 77 struct drm_fb_helper_crtc **crtcs, 78 struct drm_display_mode **modes, 79 bool *enabled, int width, int height); 80 }; 81 82 struct drm_fb_helper_connector { 83 struct drm_connector *connector; 84 struct drm_cmdline_mode cmdline_mode; 85 }; 86 87 struct drm_fb_helper { 88 struct drm_framebuffer *fb; 89 struct drm_device *dev; 90 int crtc_count; 91 struct drm_fb_helper_crtc *crtc_info; 92 int connector_count; 93 struct drm_fb_helper_connector **connector_info; 94 struct drm_fb_helper_funcs *funcs; 95 #ifdef __NetBSD__ /* XXX fb info */ 96 bus_space_tag_t fb_bst; 97 bus_space_handle_t fb_bsh; 98 /* 99 * XXX Should be a child, not genfb, but genfb doesn't have its 100 * own independent device_t concept. 101 */ 102 struct genfb_softc genfb; 103 bool genfb_attached:1; 104 #else 105 struct fb_info *fbdev; 106 #endif 107 u32 pseudo_palette[17]; 108 struct list_head kernel_fb_list; 109 110 /* we got a hotplug but fbdev wasn't running the console 111 delay until next set_par */ 112 bool delayed_hotplug; 113 }; 114 115 int drm_fb_helper_init(struct drm_device *dev, 116 struct drm_fb_helper *helper, int crtc_count, 117 int max_conn); 118 void drm_fb_helper_fini(struct drm_fb_helper *helper); 119 #ifdef __NetBSD__ /* XXX fb info */ 120 int drm_fb_helper_set_config(struct drm_fb_helper *); 121 #else 122 int drm_fb_helper_blank(int blank, struct fb_info *info); 123 int drm_fb_helper_pan_display(struct fb_var_screeninfo *var, 124 struct fb_info *info); 125 int drm_fb_helper_set_par(struct fb_info *info); 126 int drm_fb_helper_check_var(struct fb_var_screeninfo *var, 127 struct fb_info *info); 128 #endif 129 130 bool drm_fb_helper_restore_fbdev_mode(struct drm_fb_helper *fb_helper); 131 #ifndef __NetBSD__ /* XXX fb info */ 132 void drm_fb_helper_fill_var(struct fb_info *info, struct drm_fb_helper *fb_helper, 133 uint32_t fb_width, uint32_t fb_height); 134 void drm_fb_helper_fill_fix(struct fb_info *info, uint32_t pitch, 135 uint32_t depth); 136 #endif 137 138 #ifndef __NetBSD__ /* XXX fb cmap */ 139 int drm_fb_helper_setcmap(struct fb_cmap *cmap, struct fb_info *info); 140 #endif 141 142 int drm_fb_helper_hotplug_event(struct drm_fb_helper *fb_helper); 143 bool drm_fb_helper_initial_config(struct drm_fb_helper *fb_helper, int bpp_sel); 144 int drm_fb_helper_single_add_all_connectors(struct drm_fb_helper *fb_helper); 145 #ifndef __NetBSD__ /* XXX fb info */ 146 int drm_fb_helper_debug_enter(struct fb_info *info); 147 int drm_fb_helper_debug_leave(struct fb_info *info); 148 #endif 149 struct drm_display_mode * 150 drm_has_preferred_mode(struct drm_fb_helper_connector *fb_connector, 151 int width, int height); 152 struct drm_display_mode * 153 drm_pick_cmdline_mode(struct drm_fb_helper_connector *fb_helper_conn, 154 int width, int height); 155 156 #endif 157
Indexes created Fri Oct 17 23:09:53 GMT 2025