drm_modes.h revision 1.2.8.1
1 /* 2 * Copyright 2006 Keith Packard 3 * Copyright 2007-2008 Dave Airlie 4 * Copyright 2007-2008 Intel Corporation 5 * Jesse Barnes <jesse.barnes (at) intel.com> 6 * Copyright 2014 Intel Corporation 7 * Daniel Vetter <daniel.vetter (at) ffwll.ch> 8 * 9 * Permission is hereby granted, free of charge, to any person obtaining a 10 * copy of this software and associated documentation files (the "Software"), 11 * to deal in the Software without restriction, including without limitation 12 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 13 * and/or sell copies of the Software, and to permit persons to whom the 14 * Software is furnished to do so, subject to the following conditions: 15 * 16 * The above copyright notice and this permission notice shall be included in 17 * all copies or substantial portions of the Software. 18 * 19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 20 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 21 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 22 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 23 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 24 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 25 * OTHER DEALINGS IN THE SOFTWARE. 26 */ 27 #ifndef __DRM_MODES_H__ 28 #define __DRM_MODES_H__ 29 30 #include <linux/list.h> 31 32 struct device_node; 33 struct videomode; 34 35 /* 36 * Note on terminology: here, for brevity and convenience, we refer to connector 37 * control chips as 'CRTCs'. They can control any type of connector, VGA, LVDS, 38 * DVI, etc. And 'screen' refers to the whole of the visible display, which 39 * may span multiple monitors (and therefore multiple CRTC and connector 40 * structures). 41 */ 42 43 enum drm_mode_status { 44 MODE_OK = 0, /* Mode OK */ 45 MODE_HSYNC, /* hsync out of range */ 46 MODE_VSYNC, /* vsync out of range */ 47 MODE_H_ILLEGAL, /* mode has illegal horizontal timings */ 48 MODE_V_ILLEGAL, /* mode has illegal horizontal timings */ 49 MODE_BAD_WIDTH, /* requires an unsupported linepitch */ 50 MODE_NOMODE, /* no mode with a matching name */ 51 MODE_NO_INTERLACE, /* interlaced mode not supported */ 52 MODE_NO_DBLESCAN, /* doublescan mode not supported */ 53 MODE_NO_VSCAN, /* multiscan mode not supported */ 54 MODE_MEM, /* insufficient video memory */ 55 MODE_VIRTUAL_X, /* mode width too large for specified virtual size */ 56 MODE_VIRTUAL_Y, /* mode height too large for specified virtual size */ 57 MODE_MEM_VIRT, /* insufficient video memory given virtual size */ 58 MODE_NOCLOCK, /* no fixed clock available */ 59 MODE_CLOCK_HIGH, /* clock required is too high */ 60 MODE_CLOCK_LOW, /* clock required is too low */ 61 MODE_CLOCK_RANGE, /* clock/mode isn't in a ClockRange */ 62 MODE_BAD_HVALUE, /* horizontal timing was out of range */ 63 MODE_BAD_VVALUE, /* vertical timing was out of range */ 64 MODE_BAD_VSCAN, /* VScan value out of range */ 65 MODE_HSYNC_NARROW, /* horizontal sync too narrow */ 66 MODE_HSYNC_WIDE, /* horizontal sync too wide */ 67 MODE_HBLANK_NARROW, /* horizontal blanking too narrow */ 68 MODE_HBLANK_WIDE, /* horizontal blanking too wide */ 69 MODE_VSYNC_NARROW, /* vertical sync too narrow */ 70 MODE_VSYNC_WIDE, /* vertical sync too wide */ 71 MODE_VBLANK_NARROW, /* vertical blanking too narrow */ 72 MODE_VBLANK_WIDE, /* vertical blanking too wide */ 73 MODE_PANEL, /* exceeds panel dimensions */ 74 MODE_INTERLACE_WIDTH, /* width too large for interlaced mode */ 75 MODE_ONE_WIDTH, /* only one width is supported */ 76 MODE_ONE_HEIGHT, /* only one height is supported */ 77 MODE_ONE_SIZE, /* only one resolution is supported */ 78 MODE_NO_REDUCED, /* monitor doesn't accept reduced blanking */ 79 MODE_NO_STEREO, /* stereo modes not supported */ 80 MODE_UNVERIFIED = -3, /* mode needs to reverified */ 81 MODE_BAD = -2, /* unspecified reason */ 82 MODE_ERROR = -1 /* error condition */ 83 }; 84 85 #define DRM_MODE_TYPE_CLOCK_CRTC_C (DRM_MODE_TYPE_CLOCK_C | \ 86 DRM_MODE_TYPE_CRTC_C) 87 88 #define DRM_MODE(nm, t, c, hd, hss, hse, ht, hsk, vd, vss, vse, vt, vs, f) \ 89 .name = nm, .status = 0, .type = (t), .clock = (c), \ 90 .hdisplay = (hd), .hsync_start = (hss), .hsync_end = (hse), \ 91 .htotal = (ht), .hskew = (hsk), .vdisplay = (vd), \ 92 .vsync_start = (vss), .vsync_end = (vse), .vtotal = (vt), \ 93 .vscan = (vs), .flags = (f), \ 94 .base = { .type = DRM_MODE_OBJECT_MODE } 95 96 #define CRTC_INTERLACE_HALVE_V (1 << 0) /* halve V values for interlacing */ 97 #define CRTC_STEREO_DOUBLE (1 << 1) /* adjust timings for stereo modes */ 98 99 #define DRM_MODE_FLAG_3D_MAX DRM_MODE_FLAG_3D_SIDE_BY_SIDE_HALF 100 101 struct drm_display_mode { 102 /* Header */ 103 struct list_head head; 104 struct drm_mode_object base; 105 106 char name[DRM_DISPLAY_MODE_LEN]; 107 108 enum drm_mode_status status; 109 unsigned int type; 110 111 /* Proposed mode values */ 112 int clock; /* in kHz */ 113 int hdisplay; 114 int hsync_start; 115 int hsync_end; 116 int htotal; 117 int hskew; 118 int vdisplay; 119 int vsync_start; 120 int vsync_end; 121 int vtotal; 122 int vscan; 123 unsigned int flags; 124 125 /* Addressable image size (may be 0 for projectors, etc.) */ 126 int width_mm; 127 int height_mm; 128 129 /* Actual mode we give to hw */ 130 int crtc_clock; /* in KHz */ 131 int crtc_hdisplay; 132 int crtc_hblank_start; 133 int crtc_hblank_end; 134 int crtc_hsync_start; 135 int crtc_hsync_end; 136 int crtc_htotal; 137 int crtc_hskew; 138 int crtc_vdisplay; 139 int crtc_vblank_start; 140 int crtc_vblank_end; 141 int crtc_vsync_start; 142 int crtc_vsync_end; 143 int crtc_vtotal; 144 145 /* Driver private mode info */ 146 int *private; 147 int private_flags; 148 149 int vrefresh; /* in Hz */ 150 int hsync; /* in kHz */ 151 enum hdmi_picture_aspect picture_aspect_ratio; 152 }; 153 154 /* mode specified on the command line */ 155 struct drm_cmdline_mode { 156 bool specified; 157 bool refresh_specified; 158 bool bpp_specified; 159 int xres, yres; 160 int bpp; 161 int refresh; 162 bool rb; 163 bool interlace; 164 bool cvt; 165 bool margins; 166 enum drm_connector_force force; 167 }; 168 169 /** 170 * drm_mode_is_stereo - check for stereo mode flags 171 * @mode: drm_display_mode to check 172 * 173 * Returns: 174 * True if the mode is one of the stereo modes (like side-by-side), false if 175 * not. 176 */ 177 static inline bool drm_mode_is_stereo(const struct drm_display_mode *mode) 178 { 179 return mode->flags & DRM_MODE_FLAG_3D_MASK; 180 } 181 182 struct drm_connector; 183 struct drm_cmdline_mode; 184 185 struct drm_display_mode *drm_mode_create(struct drm_device *dev); 186 void drm_mode_destroy(struct drm_device *dev, struct drm_display_mode *mode); 187 void drm_mode_probed_add(struct drm_connector *connector, struct drm_display_mode *mode); 188 void drm_mode_debug_printmodeline(const struct drm_display_mode *mode); 189 190 struct drm_display_mode *drm_cvt_mode(struct drm_device *dev, 191 int hdisplay, int vdisplay, int vrefresh, 192 bool reduced, bool interlaced, 193 bool margins); 194 struct drm_display_mode *drm_gtf_mode(struct drm_device *dev, 195 int hdisplay, int vdisplay, int vrefresh, 196 bool interlaced, int margins); 197 struct drm_display_mode *drm_gtf_mode_complex(struct drm_device *dev, 198 int hdisplay, int vdisplay, 199 int vrefresh, bool interlaced, 200 int margins, 201 int GTF_M, int GTF_2C, 202 int GTF_K, int GTF_2J); 203 void drm_display_mode_from_videomode(const struct videomode *vm, 204 struct drm_display_mode *dmode); 205 int of_get_drm_display_mode(struct device_node *np, 206 struct drm_display_mode *dmode, 207 int index); 208 209 void drm_mode_set_name(struct drm_display_mode *mode); 210 int drm_mode_hsync(const struct drm_display_mode *mode); 211 int drm_mode_vrefresh(const struct drm_display_mode *mode); 212 213 void drm_mode_set_crtcinfo(struct drm_display_mode *p, 214 int adjust_flags); 215 void drm_mode_copy(struct drm_display_mode *dst, 216 const struct drm_display_mode *src); 217 struct drm_display_mode *drm_mode_duplicate(struct drm_device *dev, 218 const struct drm_display_mode *mode); 219 bool drm_mode_equal(const struct drm_display_mode *mode1, 220 const struct drm_display_mode *mode2); 221 bool drm_mode_equal_no_clocks_no_stereo(const struct drm_display_mode *mode1, 222 const struct drm_display_mode *mode2); 223 224 /* for use by the crtc helper probe functions */ 225 void drm_mode_validate_size(struct drm_device *dev, 226 struct list_head *mode_list, 227 int maxX, int maxY); 228 void drm_mode_prune_invalid(struct drm_device *dev, 229 struct list_head *mode_list, bool verbose); 230 void drm_mode_sort(struct list_head *mode_list); 231 void drm_mode_connector_list_update(struct drm_connector *connector); 232 233 /* parsing cmdline modes */ 234 bool 235 drm_mode_parse_command_line_for_connector(const char *mode_option, 236 struct drm_connector *connector, 237 struct drm_cmdline_mode *mode); 238 struct drm_display_mode * 239 drm_mode_create_from_cmdline_mode(struct drm_device *dev, 240 struct drm_cmdline_mode *cmd); 241 242 #endif /* __DRM_MODES_H__ */ 243
Indexes created Mon Oct 13 00:09:54 GMT 2025