1 /* 2 * Copyright © 2006 Keith Packard 3 * Copyright © 2007-2008 Dave Airlie 4 * Copyright © 2007-2008 Intel Corporation 5 * Jesse Barnes <jesse.barnes@intel.com> 6 * Copyright © 2014 Intel Corporation 7 * Daniel Vetter <daniel.vetter@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 /* 31 * Note on terminology: here, for brevity and convenience, we refer to connector 32 * control chips as 'CRTCs'. They can control any type of connector, VGA, LVDS, 33 * DVI, etc. And 'screen' refers to the whole of the visible display, which 34 * may span multiple monitors (and therefore multiple CRTC and connector 35 * structures). 36 */ 37 38 enum drm_mode_status { 39 MODE_OK = 0, /* Mode OK */ 40 MODE_HSYNC, /* hsync out of range */ 41 MODE_VSYNC, /* vsync out of range */ 42 MODE_H_ILLEGAL, /* mode has illegal horizontal timings */ 43 MODE_V_ILLEGAL, /* mode has illegal horizontal timings */ 44 MODE_BAD_WIDTH, /* requires an unsupported linepitch */ 45 MODE_NOMODE, /* no mode with a matching name */ 46 MODE_NO_INTERLACE, /* interlaced mode not supported */ 47 MODE_NO_DBLESCAN, /* doublescan mode not supported */ 48 MODE_NO_VSCAN, /* multiscan mode not supported */ 49 MODE_MEM, /* insufficient video memory */ 50 MODE_VIRTUAL_X, /* mode width too large for specified virtual size */ 51 MODE_VIRTUAL_Y, /* mode height too large for specified virtual size */ 52 MODE_MEM_VIRT, /* insufficient video memory given virtual size */ 53 MODE_NOCLOCK, /* no fixed clock available */ 54 MODE_CLOCK_HIGH, /* clock required is too high */ 55 MODE_CLOCK_LOW, /* clock required is too low */ 56 MODE_CLOCK_RANGE, /* clock/mode isn't in a ClockRange */ 57 MODE_BAD_HVALUE, /* horizontal timing was out of range */ 58 MODE_BAD_VVALUE, /* vertical timing was out of range */ 59 MODE_BAD_VSCAN, /* VScan value out of range */ 60 MODE_HSYNC_NARROW, /* horizontal sync too narrow */ 61 MODE_HSYNC_WIDE, /* horizontal sync too wide */ 62 MODE_HBLANK_NARROW, /* horizontal blanking too narrow */ 63 MODE_HBLANK_WIDE, /* horizontal blanking too wide */ 64 MODE_VSYNC_NARROW, /* vertical sync too narrow */ 65 MODE_VSYNC_WIDE, /* vertical sync too wide */ 66 MODE_VBLANK_NARROW, /* vertical blanking too narrow */ 67 MODE_VBLANK_WIDE, /* vertical blanking too wide */ 68 MODE_PANEL, /* exceeds panel dimensions */ 69 MODE_INTERLACE_WIDTH, /* width too large for interlaced mode */ 70 MODE_ONE_WIDTH, /* only one width is supported */ 71 MODE_ONE_HEIGHT, /* only one height is supported */ 72 MODE_ONE_SIZE, /* only one resolution is supported */ 73 MODE_NO_REDUCED, /* monitor doesn't accept reduced blanking */ 74 MODE_NO_STEREO, /* stereo modes not supported */ 75 MODE_UNVERIFIED = -3, /* mode needs to reverified */ 76 MODE_BAD = -2, /* unspecified reason */ 77 MODE_ERROR = -1 /* error condition */ 78 }; 79 80 #define DRM_MODE_TYPE_CLOCK_CRTC_C (DRM_MODE_TYPE_CLOCK_C | \ 81 DRM_MODE_TYPE_CRTC_C) 82 83 #define DRM_MODE(nm, t, c, hd, hss, hse, ht, hsk, vd, vss, vse, vt, vs, f) \ 84 .name = nm, .status = 0, .type = (t), .clock = (c), \ 85 .hdisplay = (hd), .hsync_start = (hss), .hsync_end = (hse), \ 86 .htotal = (ht), .hskew = (hsk), .vdisplay = (vd), \ 87 .vsync_start = (vss), .vsync_end = (vse), .vtotal = (vt), \ 88 .vscan = (vs), .flags = (f), \ 89 .base.type = DRM_MODE_OBJECT_MODE 90 91 #define CRTC_INTERLACE_HALVE_V (1 << 0) /* halve V values for interlacing */ 92 #define CRTC_STEREO_DOUBLE (1 << 1) /* adjust timings for stereo modes */ 93 #define CRTC_NO_DBLSCAN (1 << 2) /* don't adjust doublescan */ 94 #define CRTC_NO_VSCAN (1 << 3) /* don't adjust doublescan */ 95 #define CRTC_STEREO_DOUBLE_ONLY (CRTC_NO_DBLSCAN | CRTC_NO_VSCAN) 96 97 #define DRM_MODE_FLAG_3D_MAX DRM_MODE_FLAG_3D_SIDE_BY_SIDE_HALF 98 99 struct drm_display_mode { 100 /* Header */ 101 struct list_head head; 102 struct drm_mode_object base; 103 104 char name[DRM_DISPLAY_MODE_LEN]; 105 106 enum drm_mode_status status; 107 unsigned int type; 108 109 /* Proposed mode values */ 110 int clock; /* in kHz */ 111 int hdisplay; 112 int hsync_start; 113 int hsync_end; 114 int htotal; 115 int hskew; 116 int vdisplay; 117 int vsync_start; 118 int vsync_end; 119 int vtotal; 120 int vscan; 121 unsigned int flags; 122 123 /* Addressable image size (may be 0 for projectors, etc.) */ 124 int width_mm; 125 int height_mm; 126 127 /* Actual mode we give to hw */ 128 int crtc_clock; /* in KHz */ 129 int crtc_hdisplay; 130 int crtc_hblank_start; 131 int crtc_hblank_end; 132 int crtc_hsync_start; 133 int crtc_hsync_end; 134 int crtc_htotal; 135 int crtc_hskew; 136 int crtc_vdisplay; 137 int crtc_vblank_start; 138 int crtc_vblank_end; 139 int crtc_vsync_start; 140 int crtc_vsync_end; 141 int crtc_vtotal; 142 143 /* Driver private mode info */ 144 int *private; 145 int private_flags; 146 147 int vrefresh; /* in Hz */ 148 int hsync; /* in kHz */ 149 enum hdmi_picture_aspect picture_aspect_ratio; 150 }; 151 152 /* mode specified on the command line */ 153 struct drm_cmdline_mode { 154 bool specified; 155 bool refresh_specified; 156 bool bpp_specified; 157 int xres, yres; 158 int bpp; 159 int refresh; 160 bool rb; 161 bool interlace; 162 bool cvt; 163 bool margins; 164 enum drm_connector_force force; 165 }; 166 167 /** 168 * drm_mode_is_stereo - check for stereo mode flags 169 * @mode: drm_display_mode to check 170 * 171 * Returns: 172 * True if the mode is one of the stereo modes (like side-by-side), false if 173 * not. 174 */ 175 static inline bool drm_mode_is_stereo(const struct drm_display_mode *mode) 176 { 177 return mode->flags & DRM_MODE_FLAG_3D_MASK; 178 } 179 180 struct drm_connector; 181 struct drm_cmdline_mode; 182 183 struct drm_display_mode *drm_mode_create(struct drm_device *dev); 184 void drm_mode_destroy(struct drm_device *dev, struct drm_display_mode *mode); 185 void drm_mode_probed_add(struct drm_connector *connector, struct drm_display_mode *mode); 186 void drm_mode_debug_printmodeline(const struct drm_display_mode *mode); 187 188 struct drm_display_mode *drm_cvt_mode(struct drm_device *dev, 189 int hdisplay, int vdisplay, int vrefresh, 190 bool reduced, bool interlaced, 191 bool margins); 192 struct drm_display_mode *drm_gtf_mode(struct drm_device *dev, 193 int hdisplay, int vdisplay, int vrefresh, 194 bool interlaced, int margins); 195 struct drm_display_mode *drm_gtf_mode_complex(struct drm_device *dev, 196 int hdisplay, int vdisplay, 197 int vrefresh, bool interlaced, 198 int margins, 199 int GTF_M, int GTF_2C, 200 int GTF_K, int GTF_2J); 201 void drm_display_mode_from_videomode(const struct videomode *vm, 202 struct drm_display_mode *dmode); 203 void drm_display_mode_to_videomode(const struct drm_display_mode *dmode, 204 struct videomode *vm); 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 enum drm_mode_status drm_mode_validate_basic(const struct drm_display_mode *mode); 226 enum drm_mode_status drm_mode_validate_size(const struct drm_display_mode *mode, 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, bool merge_type_bits); 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