include/drm/drm_modes.h

   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 #include <linux/hdmi.h>
  31
  32 #include <drm/drm_mode_object.h>
  33 #include <drm/drm_connector.h>
  34
  35 struct videomode;
  36
  37 /*
  38  * Note on terminology:  here, for brevity and convenience, we refer to connector
  39  * control chips as 'CRTCs'.  They can control any type of connector, VGA, LVDS,
  40  * DVI, etc.  And 'screen' refers to the whole of the visible display, which
  41  * may span multiple monitors (and therefore multiple CRTC and connector
  42  * structures).
  43  */
  44
  45 /**
  46  * enum drm_mode_status - hardware support status of a mode
  47  * @MODE_OK: Mode OK
  48  * @MODE_HSYNC: hsync out of range
  49  * @MODE_VSYNC: vsync out of range
  50  * @MODE_H_ILLEGAL: mode has illegal horizontal timings
  51  * @MODE_V_ILLEGAL: mode has illegal horizontal timings
  52  * @MODE_BAD_WIDTH: requires an unsupported linepitch
  53  * @MODE_NOMODE: no mode with a matching name
  54  * @MODE_NO_INTERLACE: interlaced mode not supported
  55  * @MODE_NO_DBLESCAN: doublescan mode not supported
  56  * @MODE_NO_VSCAN: multiscan mode not supported
  57  * @MODE_MEM: insufficient video memory
  58  * @MODE_VIRTUAL_X: mode width too large for specified virtual size
  59  * @MODE_VIRTUAL_Y: mode height too large for specified virtual size
  60  * @MODE_MEM_VIRT: insufficient video memory given virtual size
  61  * @MODE_NOCLOCK: no fixed clock available
  62  * @MODE_CLOCK_HIGH: clock required is too high
  63  * @MODE_CLOCK_LOW: clock required is too low
  64  * @MODE_CLOCK_RANGE: clock/mode isn't in a ClockRange
  65  * @MODE_BAD_HVALUE: horizontal timing was out of range
  66  * @MODE_BAD_VVALUE: vertical timing was out of range
  67  * @MODE_BAD_VSCAN: VScan value out of range
  68  * @MODE_HSYNC_NARROW: horizontal sync too narrow
  69  * @MODE_HSYNC_WIDE: horizontal sync too wide
  70  * @MODE_HBLANK_NARROW: horizontal blanking too narrow
  71  * @MODE_HBLANK_WIDE: horizontal blanking too wide
  72  * @MODE_VSYNC_NARROW: vertical sync too narrow
  73  * @MODE_VSYNC_WIDE: vertical sync too wide
  74  * @MODE_VBLANK_NARROW: vertical blanking too narrow
  75  * @MODE_VBLANK_WIDE: vertical blanking too wide
  76  * @MODE_PANEL: exceeds panel dimensions
  77  * @MODE_INTERLACE_WIDTH: width too large for interlaced mode
  78  * @MODE_ONE_WIDTH: only one width is supported
  79  * @MODE_ONE_HEIGHT: only one height is supported
  80  * @MODE_ONE_SIZE: only one resolution is supported
  81  * @MODE_NO_REDUCED: monitor doesn't accept reduced blanking
  82  * @MODE_NO_STEREO: stereo modes not supported
  83  * @MODE_NO_420: ycbcr 420 modes not supported
  84  * @MODE_STALE: mode has become stale
  85  * @MODE_BAD: unspecified reason
  86  * @MODE_ERROR: error condition
  87  *
  88  * This enum is used to filter out modes not supported by the driver/hardware
  89  * combination.
  90  */
  91 enum drm_mode_status {
  92         MODE_OK = 0,
  93         MODE_HSYNC,
  94         MODE_VSYNC,
  95         MODE_H_ILLEGAL,
  96         MODE_V_ILLEGAL,
  97         MODE_BAD_WIDTH,
  98         MODE_NOMODE,
  99         MODE_NO_INTERLACE,
 100         MODE_NO_DBLESCAN,
 101         MODE_NO_VSCAN,
 102         MODE_MEM,
 103         MODE_VIRTUAL_X,
 104         MODE_VIRTUAL_Y,
 105         MODE_MEM_VIRT,
 106         MODE_NOCLOCK,
 107         MODE_CLOCK_HIGH,
 108         MODE_CLOCK_LOW,
 109         MODE_CLOCK_RANGE,
 110         MODE_BAD_HVALUE,
 111         MODE_BAD_VVALUE,
 112         MODE_BAD_VSCAN,
 113         MODE_HSYNC_NARROW,
 114         MODE_HSYNC_WIDE,
 115         MODE_HBLANK_NARROW,
 116         MODE_HBLANK_WIDE,
 117         MODE_VSYNC_NARROW,
 118         MODE_VSYNC_WIDE,
 119         MODE_VBLANK_NARROW,
 120         MODE_VBLANK_WIDE,
 121         MODE_PANEL,
 122         MODE_INTERLACE_WIDTH,
 123         MODE_ONE_WIDTH,
 124         MODE_ONE_HEIGHT,
 125         MODE_ONE_SIZE,
 126         MODE_NO_REDUCED,
 127         MODE_NO_STEREO,
 128         MODE_NO_420,
 129         MODE_STALE = -3,
 130         MODE_BAD = -2,
 131         MODE_ERROR = -1
 132 };
 133
 134 #define DRM_MODE(nm, t, c, hd, hss, hse, ht, hsk, vd, vss, vse, vt, vs, f) \
 135         .name = nm, .status = 0, .type = (t), .clock = (c), \
 136         .hdisplay = (hd), .hsync_start = (hss), .hsync_end = (hse), \
 137         .htotal = (ht), .hskew = (hsk), .vdisplay = (vd), \
 138         .vsync_start = (vss), .vsync_end = (vse), .vtotal = (vt), \
 139         .vscan = (vs), .flags = (f)
 140
 141 /**
 142  * DRM_SIMPLE_MODE - Simple display mode
 143  * @hd: Horizontal resolution, width
 144  * @vd: Vertical resolution, height
 145  * @hd_mm: Display width in millimeters
 146  * @vd_mm: Display height in millimeters
 147  *
 148  * This macro initializes a &drm_display_mode that only contains info about
 149  * resolution and physical size.
 150  */
 151 #define DRM_SIMPLE_MODE(hd, vd, hd_mm, vd_mm) \
 152         .type = DRM_MODE_TYPE_DRIVER, .clock = 1 /* pass validation */, \
 153         .hdisplay = (hd), .hsync_start = (hd), .hsync_end = (hd), \
 154         .htotal = (hd), .vdisplay = (vd), .vsync_start = (vd), \
 155         .vsync_end = (vd), .vtotal = (vd), .width_mm = (hd_mm), \
 156         .height_mm = (vd_mm)
 157
 158 #define CRTC_INTERLACE_HALVE_V  (1 << 0) /* halve V values for interlacing */
 159 #define CRTC_STEREO_DOUBLE      (1 << 1) /* adjust timings for stereo modes */
 160 #define CRTC_NO_DBLSCAN         (1 << 2) /* don't adjust doublescan */
 161 #define CRTC_NO_VSCAN           (1 << 3) /* don't adjust doublescan */
 162 #define CRTC_STEREO_DOUBLE_ONLY (CRTC_STEREO_DOUBLE | CRTC_NO_DBLSCAN | CRTC_NO_VSCAN)
 163
 164 #define DRM_MODE_FLAG_3D_MAX    DRM_MODE_FLAG_3D_SIDE_BY_SIDE_HALF
 165
 166 #define DRM_MODE_MATCH_TIMINGS (1 << 0)
 167 #define DRM_MODE_MATCH_CLOCK (1 << 1)
 168 #define DRM_MODE_MATCH_FLAGS (1 << 2)
 169 #define DRM_MODE_MATCH_3D_FLAGS (1 << 3)
 170 #define DRM_MODE_MATCH_ASPECT_RATIO (1 << 4)
 171
 172 /**
 173  * struct drm_display_mode - DRM kernel-internal display mode structure
 174  * @hdisplay: horizontal display size
 175  * @hsync_start: horizontal sync start
 176  * @hsync_end: horizontal sync end
 177  * @htotal: horizontal total size
 178  * @hskew: horizontal skew?!
 179  * @vdisplay: vertical display size
 180  * @vsync_start: vertical sync start
 181  * @vsync_end: vertical sync end
 182  * @vtotal: vertical total size
 183  * @vscan: vertical scan?!
 184  * @crtc_hdisplay: hardware mode horizontal display size
 185  * @crtc_hblank_start: hardware mode horizontal blank start
 186  * @crtc_hblank_end: hardware mode horizontal blank end
 187  * @crtc_hsync_start: hardware mode horizontal sync start
 188  * @crtc_hsync_end: hardware mode horizontal sync end
 189  * @crtc_htotal: hardware mode horizontal total size
 190  * @crtc_hskew: hardware mode horizontal skew?!
 191  * @crtc_vdisplay: hardware mode vertical display size
 192  * @crtc_vblank_start: hardware mode vertical blank start
 193  * @crtc_vblank_end: hardware mode vertical blank end
 194  * @crtc_vsync_start: hardware mode vertical sync start
 195  * @crtc_vsync_end: hardware mode vertical sync end
 196  * @crtc_vtotal: hardware mode vertical total size
 197  *
 198  * The horizontal and vertical timings are defined per the following diagram.
 199  *
 200  * ::
 201  *
 202  *
 203  *               Active                 Front           Sync           Back
 204  *              Region                 Porch                          Porch
 205  *     <-----------------------><----------------><-------------><-------------->
 206  *       //////////////////////|
 207  *      ////////////////////// |
 208  *     //////////////////////  |..................               ................
 209  *                                                _______________
 210  *     <----- [hv]display ----->
 211  *     <------------- [hv]sync_start ------------>
 212  *     <--------------------- [hv]sync_end --------------------->
 213  *     <-------------------------------- [hv]total ----------------------------->*
 214  *
 215  * This structure contains two copies of timings. First are the plain timings,
 216  * which specify the logical mode, as it would be for a progressive 1:1 scanout
 217  * at the refresh rate userspace can observe through vblank timestamps. Then
 218  * there's the hardware timings, which are corrected for interlacing,
 219  * double-clocking and similar things. They are provided as a convenience, and
 220  * can be appropriately computed using drm_mode_set_crtcinfo().
 221  *
 222  * For printing you can use %DRM_MODE_FMT and DRM_MODE_ARG().
 223  */
 224 struct drm_display_mode {
 225         /**
 226          * @head:
 227          *
 228          * struct list_head for mode lists.
 229          */
 230         struct list_head head;
 231
 232         /**
 233          * @name:
 234          *
 235          * Human-readable name of the mode, filled out with drm_mode_set_name().
 236          */
 237         char name[DRM_DISPLAY_MODE_LEN];
 238
 239         /**
 240          * @status:
 241          *
 242          * Status of the mode, used to filter out modes not supported by the
 243          * hardware. See enum &drm_mode_status.
 244          */
 245         enum drm_mode_status status;
 246
 247         /**
 248          * @type:
 249          *
 250          * A bitmask of flags, mostly about the source of a mode. Possible flags
 251          * are:
 252          *
 253          *  - DRM_MODE_TYPE_PREFERRED: Preferred mode, usually the native
 254          *    resolution of an LCD panel. There should only be one preferred
 255          *    mode per connector at any given time.
 256          *  - DRM_MODE_TYPE_DRIVER: Mode created by the driver, which is all of
 257          *    them really. Drivers must set this bit for all modes they create
 258          *    and expose to userspace.
 259          *  - DRM_MODE_TYPE_USERDEF: Mode defined via kernel command line
 260          *
 261          * Plus a big list of flags which shouldn't be used at all, but are
 262          * still around since these flags are also used in the userspace ABI.
 263          * We no longer accept modes with these types though:
 264          *
 265          *  - DRM_MODE_TYPE_BUILTIN: Meant for hard-coded modes, unused.
 266          *    Use DRM_MODE_TYPE_DRIVER instead.
 267          *  - DRM_MODE_TYPE_DEFAULT: Again a leftover, use
 268          *    DRM_MODE_TYPE_PREFERRED instead.
 269          *  - DRM_MODE_TYPE_CLOCK_C and DRM_MODE_TYPE_CRTC_C: Define leftovers
 270          *    which are stuck around for hysterical raisins only. No one has an
 271          *    idea what they were meant for. Don't use.
 272          */
 273         unsigned int type;
 274
 275         /**
 276          * @clock:
 277          *
 278          * Pixel clock in kHz.
 279          */
 280         int clock;              /* in kHz */
 281         int hdisplay;
 282         int hsync_start;
 283         int hsync_end;
 284         int htotal;
 285         int hskew;
 286         int vdisplay;
 287         int vsync_start;
 288         int vsync_end;
 289         int vtotal;
 290         int vscan;
 291         /**
 292          * @flags:
 293          *
 294          * Sync and timing flags:
 295          *
 296          *  - DRM_MODE_FLAG_PHSYNC: horizontal sync is active high.
 297          *  - DRM_MODE_FLAG_NHSYNC: horizontal sync is active low.
 298          *  - DRM_MODE_FLAG_PVSYNC: vertical sync is active high.
 299          *  - DRM_MODE_FLAG_NVSYNC: vertical sync is active low.
 300          *  - DRM_MODE_FLAG_INTERLACE: mode is interlaced.
 301          *  - DRM_MODE_FLAG_DBLSCAN: mode uses doublescan.
 302          *  - DRM_MODE_FLAG_CSYNC: mode uses composite sync.
 303          *  - DRM_MODE_FLAG_PCSYNC: composite sync is active high.
 304          *  - DRM_MODE_FLAG_NCSYNC: composite sync is active low.
 305          *  - DRM_MODE_FLAG_HSKEW: hskew provided (not used?).
 306          *  - DRM_MODE_FLAG_BCAST: <deprecated>
 307          *  - DRM_MODE_FLAG_PIXMUX: <deprecated>
 308          *  - DRM_MODE_FLAG_DBLCLK: double-clocked mode.
 309          *  - DRM_MODE_FLAG_CLKDIV2: half-clocked mode.
 310          *
 311          * Additionally there's flags to specify how 3D modes are packed:
 312          *
 313          *  - DRM_MODE_FLAG_3D_NONE: normal, non-3D mode.
 314          *  - DRM_MODE_FLAG_3D_FRAME_PACKING: 2 full frames for left and right.
 315          *  - DRM_MODE_FLAG_3D_FIELD_ALTERNATIVE: interleaved like fields.
 316          *  - DRM_MODE_FLAG_3D_LINE_ALTERNATIVE: interleaved lines.
 317          *  - DRM_MODE_FLAG_3D_SIDE_BY_SIDE_FULL: side-by-side full frames.
 318          *  - DRM_MODE_FLAG_3D_L_DEPTH: ?
 319          *  - DRM_MODE_FLAG_3D_L_DEPTH_GFX_GFX_DEPTH: ?
 320          *  - DRM_MODE_FLAG_3D_TOP_AND_BOTTOM: frame split into top and bottom
 321          *    parts.
 322          *  - DRM_MODE_FLAG_3D_SIDE_BY_SIDE_HALF: frame split into left and
 323          *    right parts.
 324          */
 325         unsigned int flags;
 326
 327         /**
 328          * @width_mm:
 329          *
 330          * Addressable size of the output in mm, projectors should set this to
 331          * 0.
 332          */
 333         int width_mm;
 334
 335         /**
 336          * @height_mm:
 337          *
 338          * Addressable size of the output in mm, projectors should set this to
 339          * 0.
 340          */
 341         int height_mm;
 342
 343         /**
 344          * @crtc_clock:
 345          *
 346          * Actual pixel or dot clock in the hardware. This differs from the
 347          * logical @clock when e.g. using interlacing, double-clocking, stereo
 348          * modes or other fancy stuff that changes the timings and signals
 349          * actually sent over the wire.
 350          *
 351          * This is again in kHz.
 352          *
 353          * Note that with digital outputs like HDMI or DP there's usually a
 354          * massive confusion between the dot clock and the signal clock at the
 355          * bit encoding level. Especially when a 8b/10b encoding is used and the
 356          * difference is exactly a factor of 10.
 357          */
 358         int crtc_clock;
 359         int crtc_hdisplay;
 360         int crtc_hblank_start;
 361         int crtc_hblank_end;
 362         int crtc_hsync_start;
 363         int crtc_hsync_end;
 364         int crtc_htotal;
 365         int crtc_hskew;
 366         int crtc_vdisplay;
 367         int crtc_vblank_start;
 368         int crtc_vblank_end;
 369         int crtc_vsync_start;
 370         int crtc_vsync_end;
 371         int crtc_vtotal;
 372
 373         /**
 374          * @private_flags:
 375          *
 376          * Driver private flags. private_flags can only be used for mode
 377          * objects passed to drivers in modeset operations. It shouldn't be used
 378          * by atomic drivers since they can store any additional data by
 379          * subclassing state structures.
 380          */
 381         int private_flags;
 382
 383         /**
 384          * @vrefresh:
 385          *
 386          * Vertical refresh rate, for debug output in human readable form. Not
 387          * used in a functional way.
 388          *
 389          * This value is in Hz.
 390          */
 391         int vrefresh;
 392
 393         /**
 394          * @hsync:
 395          *
 396          * Horizontal refresh rate, for debug output in human readable form. Not
 397          * used in a functional way.
 398          *
 399          * This value is in kHz.
 400          */
 401         int hsync;
 402
 403         /**
 404          * @picture_aspect_ratio:
 405          *
 406          * Field for setting the HDMI picture aspect ratio of a mode.
 407          */
 408         enum hdmi_picture_aspect picture_aspect_ratio;
 409
 410         /**
 411          * @export_head:
 412          *
 413          * struct list_head for modes to be exposed to the userspace.
 414          * This is to maintain a list of exposed modes while preparing
 415          * user-mode's list in drm_mode_getconnector ioctl. The purpose of this
 416          * list_head only lies in the ioctl function, and is not expected to be
 417          * used outside the function.
 418          * Once used, the stale pointers are not reset, but left as it is, to
 419          * avoid overhead of protecting it by mode_config.mutex.
 420          */
 421         struct list_head export_head;
 422 };
 423
 424 /**
 425  * DRM_MODE_FMT - printf string for &struct drm_display_mode
 426  */
 427 #define DRM_MODE_FMT    "\"%s\": %d %d %d %d %d %d %d %d %d %d 0x%x 0x%x"
 428
 429 /**
 430  * DRM_MODE_ARG - printf arguments for &struct drm_display_mode
 431  * @m: display mode
 432  */
 433 #define DRM_MODE_ARG(m) \
 434         (m)->name, (m)->vrefresh, (m)->clock, \
 435         (m)->hdisplay, (m)->hsync_start, (m)->hsync_end, (m)->htotal, \
 436         (m)->vdisplay, (m)->vsync_start, (m)->vsync_end, (m)->vtotal, \
 437         (m)->type, (m)->flags
 438
 439 #define obj_to_mode(x) container_of(x, struct drm_display_mode, base)
 440
 441 /**
 442  * drm_mode_is_stereo - check for stereo mode flags
 443  * @mode: drm_display_mode to check
 444  *
 445  * Returns:
 446  * True if the mode is one of the stereo modes (like side-by-side), false if
 447  * not.
 448  */
 449 static inline bool drm_mode_is_stereo(const struct drm_display_mode *mode)
 450 {
 451         return mode->flags & DRM_MODE_FLAG_3D_MASK;
 452 }
 453
 454 struct drm_connector;
 455 struct drm_cmdline_mode;
 456
 457 struct drm_display_mode *drm_mode_create(struct drm_device *dev);
 458 void drm_mode_destroy(struct drm_device *dev, struct drm_display_mode *mode);
 459 void drm_mode_convert_to_umode(struct drm_mode_modeinfo *out,
 460                                const struct drm_display_mode *in);
 461 int drm_mode_convert_umode(struct drm_device *dev,
 462                            struct drm_display_mode *out,
 463                            const struct drm_mode_modeinfo *in);
 464 void drm_mode_probed_add(struct drm_connector *connector, struct drm_display_mode *mode);
 465 void drm_mode_debug_printmodeline(const struct drm_display_mode *mode);
 466 bool drm_mode_is_420_only(const struct drm_display_info *display,
 467                           const struct drm_display_mode *mode);
 468 bool drm_mode_is_420_also(const struct drm_display_info *display,
 469                           const struct drm_display_mode *mode);
 470 bool drm_mode_is_420(const struct drm_display_info *display,
 471                      const struct drm_display_mode *mode);
 472
 473 struct drm_display_mode *drm_cvt_mode(struct drm_device *dev,
 474                                       int hdisplay, int vdisplay, int vrefresh,
 475                                       bool reduced, bool interlaced,
 476                                       bool margins);
 477 struct drm_display_mode *drm_gtf_mode(struct drm_device *dev,
 478                                       int hdisplay, int vdisplay, int vrefresh,
 479                                       bool interlaced, int margins);
 480 struct drm_display_mode *drm_gtf_mode_complex(struct drm_device *dev,
 481                                               int hdisplay, int vdisplay,
 482                                               int vrefresh, bool interlaced,
 483                                               int margins,
 484                                               int GTF_M, int GTF_2C,
 485                                               int GTF_K, int GTF_2J);
 486 void drm_display_mode_from_videomode(const struct videomode *vm,
 487                                      struct drm_display_mode *dmode);
 488 void drm_display_mode_to_videomode(const struct drm_display_mode *dmode,
 489                                    struct videomode *vm);
 490 void drm_bus_flags_from_videomode(const struct videomode *vm, u32 *bus_flags);
 491 int of_get_drm_display_mode(struct device_node *np,
 492                             struct drm_display_mode *dmode, u32 *bus_flags,
 493                             int index);
 494
 495 void drm_mode_set_name(struct drm_display_mode *mode);
 496 int drm_mode_hsync(const struct drm_display_mode *mode);
 497 int drm_mode_vrefresh(const struct drm_display_mode *mode);
 498 void drm_mode_get_hv_timing(const struct drm_display_mode *mode,
 499                             int *hdisplay, int *vdisplay);
 500
 501 void drm_mode_set_crtcinfo(struct drm_display_mode *p,
 502                            int adjust_flags);
 503 void drm_mode_copy(struct drm_display_mode *dst,
 504                    const struct drm_display_mode *src);
 505 struct drm_display_mode *drm_mode_duplicate(struct drm_device *dev,
 506                                             const struct drm_display_mode *mode);
 507 bool drm_mode_match(const struct drm_display_mode *mode1,
 508                     const struct drm_display_mode *mode2,
 509                     unsigned int match_flags);
 510 bool drm_mode_equal(const struct drm_display_mode *mode1,
 511                     const struct drm_display_mode *mode2);
 512 bool drm_mode_equal_no_clocks(const struct drm_display_mode *mode1,
 513                               const struct drm_display_mode *mode2);
 514 bool drm_mode_equal_no_clocks_no_stereo(const struct drm_display_mode *mode1,
 515                                         const struct drm_display_mode *mode2);
 516
 517 /* for use by the crtc helper probe functions */
 518 enum drm_mode_status drm_mode_validate_driver(struct drm_device *dev,
 519                                               const struct drm_display_mode *mode);
 520 enum drm_mode_status drm_mode_validate_size(const struct drm_display_mode *mode,
 521                                             int maxX, int maxY);
 522 enum drm_mode_status
 523 drm_mode_validate_ycbcr420(const struct drm_display_mode *mode,
 524                            struct drm_connector *connector);
 525 void drm_mode_prune_invalid(struct drm_device *dev,
 526                             struct list_head *mode_list, bool verbose);
 527 void drm_mode_sort(struct list_head *mode_list);
 528 void drm_connector_list_update(struct drm_connector *connector);
 529
 530 /* parsing cmdline modes */
 531 bool
 532 drm_mode_parse_command_line_for_connector(const char *mode_option,
 533                                           const struct drm_connector *connector,
 534                                           struct drm_cmdline_mode *mode);
 535 struct drm_display_mode *
 536 drm_mode_create_from_cmdline_mode(struct drm_device *dev,
 537                                   struct drm_cmdline_mode *cmd);
 538
 539 #endif /* __DRM_MODES_H__ */