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1/*2 * Copyright © 2006 Keith Packard3 * Copyright © 2007-2008 Dave Airlie4 * Copyright © 2007-2008 Intel Corporation5 * Jesse Barnes <jesse.barnes@intel.com>6 * Copyright © 2014 Intel Corporation7 * Daniel Vetter <daniel.vetter@ffwll.ch>8 *9 * Permission is hereby granted, free of charge, to any person obtaining a10 * copy of this software and associated documentation files (the "Software"),11 * to deal in the Software without restriction, including without limitation12 * the rights to use, copy, modify, merge, publish, distribute, sublicense,13 * and/or sell copies of the Software, and to permit persons to whom the14 * Software is furnished to do so, subject to the following conditions:15 *16 * The above copyright notice and this permission notice shall be included in17 * all copies or substantial portions of the Software.18 *19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR20 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,21 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL22 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR23 * 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 OR25 * 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 35struct videomode;36 37/*38 * Note on terminology: here, for brevity and convenience, we refer to connector39 * 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, which41 * may span multiple monitors (and therefore multiple CRTC and connector42 * structures).43 */44 45/**46 * enum drm_mode_status - hardware support status of a mode47 * @MODE_OK: Mode OK48 * @MODE_HSYNC: hsync out of range49 * @MODE_VSYNC: vsync out of range50 * @MODE_H_ILLEGAL: mode has illegal horizontal timings51 * @MODE_V_ILLEGAL: mode has illegal vertical timings52 * @MODE_BAD_WIDTH: requires an unsupported linepitch53 * @MODE_NOMODE: no mode with a matching name54 * @MODE_NO_INTERLACE: interlaced mode not supported55 * @MODE_NO_DBLESCAN: doublescan mode not supported56 * @MODE_NO_VSCAN: multiscan mode not supported57 * @MODE_MEM: insufficient video memory58 * @MODE_VIRTUAL_X: mode width too large for specified virtual size59 * @MODE_VIRTUAL_Y: mode height too large for specified virtual size60 * @MODE_MEM_VIRT: insufficient video memory given virtual size61 * @MODE_NOCLOCK: no fixed clock available62 * @MODE_CLOCK_HIGH: clock required is too high63 * @MODE_CLOCK_LOW: clock required is too low64 * @MODE_CLOCK_RANGE: clock/mode isn't in a ClockRange65 * @MODE_BAD_HVALUE: horizontal timing was out of range66 * @MODE_BAD_VVALUE: vertical timing was out of range67 * @MODE_BAD_VSCAN: VScan value out of range68 * @MODE_HSYNC_NARROW: horizontal sync too narrow69 * @MODE_HSYNC_WIDE: horizontal sync too wide70 * @MODE_HBLANK_NARROW: horizontal blanking too narrow71 * @MODE_HBLANK_WIDE: horizontal blanking too wide72 * @MODE_VSYNC_NARROW: vertical sync too narrow73 * @MODE_VSYNC_WIDE: vertical sync too wide74 * @MODE_VBLANK_NARROW: vertical blanking too narrow75 * @MODE_VBLANK_WIDE: vertical blanking too wide76 * @MODE_PANEL: exceeds panel dimensions77 * @MODE_INTERLACE_WIDTH: width too large for interlaced mode78 * @MODE_ONE_WIDTH: only one width is supported79 * @MODE_ONE_HEIGHT: only one height is supported80 * @MODE_ONE_SIZE: only one resolution is supported81 * @MODE_NO_REDUCED: monitor doesn't accept reduced blanking82 * @MODE_NO_STEREO: stereo modes not supported83 * @MODE_NO_420: ycbcr 420 modes not supported84 * @MODE_STALE: mode has become stale85 * @MODE_BAD: unspecified reason86 * @MODE_ERROR: error condition87 *88 * This enum is used to filter out modes not supported by the driver/hardware89 * combination.90 */91enum 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 = -1132};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_MODE_RES_MM - Calculates the display size from resolution and DPI143 * @res: The resolution in pixel144 * @dpi: The number of dots per inch145 */146#define DRM_MODE_RES_MM(res, dpi) \147 (((res) * 254ul) / ((dpi) * 10ul))148 149#define __DRM_MODE_INIT(pix, hd, vd, hd_mm, vd_mm) \150 .type = DRM_MODE_TYPE_DRIVER, .clock = (pix), \151 .hdisplay = (hd), .hsync_start = (hd), .hsync_end = (hd), \152 .htotal = (hd), .vdisplay = (vd), .vsync_start = (vd), \153 .vsync_end = (vd), .vtotal = (vd), .width_mm = (hd_mm), \154 .height_mm = (vd_mm)155 156/**157 * DRM_MODE_INIT - Initialize display mode158 * @hz: Vertical refresh rate in Hertz159 * @hd: Horizontal resolution, width160 * @vd: Vertical resolution, height161 * @hd_mm: Display width in millimeters162 * @vd_mm: Display height in millimeters163 *164 * This macro initializes a &drm_display_mode that contains information about165 * refresh rate, resolution and physical size.166 */167#define DRM_MODE_INIT(hz, hd, vd, hd_mm, vd_mm) \168 __DRM_MODE_INIT((hd) * (vd) * (hz) / 1000 /* kHz */, hd, vd, hd_mm, vd_mm)169 170/**171 * DRM_SIMPLE_MODE - Simple display mode172 * @hd: Horizontal resolution, width173 * @vd: Vertical resolution, height174 * @hd_mm: Display width in millimeters175 * @vd_mm: Display height in millimeters176 *177 * This macro initializes a &drm_display_mode that only contains info about178 * resolution and physical size.179 */180#define DRM_SIMPLE_MODE(hd, vd, hd_mm, vd_mm) \181 __DRM_MODE_INIT(1 /* pass validation */, hd, vd, hd_mm, vd_mm)182 183#define CRTC_INTERLACE_HALVE_V (1 << 0) /* halve V values for interlacing */184#define CRTC_STEREO_DOUBLE (1 << 1) /* adjust timings for stereo modes */185#define CRTC_NO_DBLSCAN (1 << 2) /* don't adjust doublescan */186#define CRTC_NO_VSCAN (1 << 3) /* don't adjust doublescan */187#define CRTC_STEREO_DOUBLE_ONLY (CRTC_STEREO_DOUBLE | CRTC_NO_DBLSCAN | CRTC_NO_VSCAN)188 189#define DRM_MODE_FLAG_3D_MAX DRM_MODE_FLAG_3D_SIDE_BY_SIDE_HALF190 191#define DRM_MODE_MATCH_TIMINGS (1 << 0)192#define DRM_MODE_MATCH_CLOCK (1 << 1)193#define DRM_MODE_MATCH_FLAGS (1 << 2)194#define DRM_MODE_MATCH_3D_FLAGS (1 << 3)195#define DRM_MODE_MATCH_ASPECT_RATIO (1 << 4)196 197/**198 * struct drm_display_mode - DRM kernel-internal display mode structure199 * @hdisplay: horizontal display size200 * @hsync_start: horizontal sync start201 * @hsync_end: horizontal sync end202 * @htotal: horizontal total size203 * @hskew: horizontal skew?!204 * @vdisplay: vertical display size205 * @vsync_start: vertical sync start206 * @vsync_end: vertical sync end207 * @vtotal: vertical total size208 * @vscan: vertical scan?!209 * @crtc_hdisplay: hardware mode horizontal display size210 * @crtc_hblank_start: hardware mode horizontal blank start211 * @crtc_hblank_end: hardware mode horizontal blank end212 * @crtc_hsync_start: hardware mode horizontal sync start213 * @crtc_hsync_end: hardware mode horizontal sync end214 * @crtc_htotal: hardware mode horizontal total size215 * @crtc_hskew: hardware mode horizontal skew?!216 * @crtc_vdisplay: hardware mode vertical display size217 * @crtc_vblank_start: hardware mode vertical blank start218 * @crtc_vblank_end: hardware mode vertical blank end219 * @crtc_vsync_start: hardware mode vertical sync start220 * @crtc_vsync_end: hardware mode vertical sync end221 * @crtc_vtotal: hardware mode vertical total size222 *223 * This is the kernel API display mode information structure. For the224 * user-space version see struct drm_mode_modeinfo.225 *226 * The horizontal and vertical timings are defined per the following diagram.227 *228 * ::229 *230 *231 * Active Front Sync Back232 * Region Porch Porch233 * <-----------------------><----------------><-------------><-------------->234 * //////////////////////|235 * ////////////////////// |236 * ////////////////////// |.................. ................237 * _______________238 * <----- [hv]display ----->239 * <------------- [hv]sync_start ------------>240 * <--------------------- [hv]sync_end --------------------->241 * <-------------------------------- [hv]total ----------------------------->*242 *243 * This structure contains two copies of timings. First are the plain timings,244 * which specify the logical mode, as it would be for a progressive 1:1 scanout245 * at the refresh rate userspace can observe through vblank timestamps. Then246 * there's the hardware timings, which are corrected for interlacing,247 * double-clocking and similar things. They are provided as a convenience, and248 * can be appropriately computed using drm_mode_set_crtcinfo().249 *250 * For printing you can use %DRM_MODE_FMT and DRM_MODE_ARG().251 */252struct drm_display_mode {253 /**254 * @clock:255 *256 * Pixel clock in kHz.257 */258 int clock; /* in kHz */259 u16 hdisplay;260 u16 hsync_start;261 u16 hsync_end;262 u16 htotal;263 u16 hskew;264 u16 vdisplay;265 u16 vsync_start;266 u16 vsync_end;267 u16 vtotal;268 u16 vscan;269 /**270 * @flags:271 *272 * Sync and timing flags:273 *274 * - DRM_MODE_FLAG_PHSYNC: horizontal sync is active high.275 * - DRM_MODE_FLAG_NHSYNC: horizontal sync is active low.276 * - DRM_MODE_FLAG_PVSYNC: vertical sync is active high.277 * - DRM_MODE_FLAG_NVSYNC: vertical sync is active low.278 * - DRM_MODE_FLAG_INTERLACE: mode is interlaced.279 * - DRM_MODE_FLAG_DBLSCAN: mode uses doublescan.280 * - DRM_MODE_FLAG_CSYNC: mode uses composite sync.281 * - DRM_MODE_FLAG_PCSYNC: composite sync is active high.282 * - DRM_MODE_FLAG_NCSYNC: composite sync is active low.283 * - DRM_MODE_FLAG_HSKEW: hskew provided (not used?).284 * - DRM_MODE_FLAG_BCAST: <deprecated>285 * - DRM_MODE_FLAG_PIXMUX: <deprecated>286 * - DRM_MODE_FLAG_DBLCLK: double-clocked mode.287 * - DRM_MODE_FLAG_CLKDIV2: half-clocked mode.288 *289 * Additionally there's flags to specify how 3D modes are packed:290 *291 * - DRM_MODE_FLAG_3D_NONE: normal, non-3D mode.292 * - DRM_MODE_FLAG_3D_FRAME_PACKING: 2 full frames for left and right.293 * - DRM_MODE_FLAG_3D_FIELD_ALTERNATIVE: interleaved like fields.294 * - DRM_MODE_FLAG_3D_LINE_ALTERNATIVE: interleaved lines.295 * - DRM_MODE_FLAG_3D_SIDE_BY_SIDE_FULL: side-by-side full frames.296 * - DRM_MODE_FLAG_3D_L_DEPTH: ?297 * - DRM_MODE_FLAG_3D_L_DEPTH_GFX_GFX_DEPTH: ?298 * - DRM_MODE_FLAG_3D_TOP_AND_BOTTOM: frame split into top and bottom299 * parts.300 * - DRM_MODE_FLAG_3D_SIDE_BY_SIDE_HALF: frame split into left and301 * right parts.302 */303 u32 flags;304 305 /**306 * @crtc_clock:307 *308 * Actual pixel or dot clock in the hardware. This differs from the309 * logical @clock when e.g. using interlacing, double-clocking, stereo310 * modes or other fancy stuff that changes the timings and signals311 * actually sent over the wire.312 *313 * This is again in kHz.314 *315 * Note that with digital outputs like HDMI or DP there's usually a316 * massive confusion between the dot clock and the signal clock at the317 * bit encoding level. Especially when a 8b/10b encoding is used and the318 * difference is exactly a factor of 10.319 */320 int crtc_clock;321 u16 crtc_hdisplay;322 u16 crtc_hblank_start;323 u16 crtc_hblank_end;324 u16 crtc_hsync_start;325 u16 crtc_hsync_end;326 u16 crtc_htotal;327 u16 crtc_hskew;328 u16 crtc_vdisplay;329 u16 crtc_vblank_start;330 u16 crtc_vblank_end;331 u16 crtc_vsync_start;332 u16 crtc_vsync_end;333 u16 crtc_vtotal;334 335 /**336 * @width_mm:337 *338 * Addressable size of the output in mm, projectors should set this to339 * 0.340 */341 u16 width_mm;342 343 /**344 * @height_mm:345 *346 * Addressable size of the output in mm, projectors should set this to347 * 0.348 */349 u16 height_mm;350 351 /**352 * @type:353 *354 * A bitmask of flags, mostly about the source of a mode. Possible flags355 * are:356 *357 * - DRM_MODE_TYPE_PREFERRED: Preferred mode, usually the native358 * resolution of an LCD panel. There should only be one preferred359 * mode per connector at any given time.360 * - DRM_MODE_TYPE_DRIVER: Mode created by the driver, which is all of361 * them really. Drivers must set this bit for all modes they create362 * and expose to userspace.363 * - DRM_MODE_TYPE_USERDEF: Mode defined or selected via the kernel364 * command line.365 *366 * Plus a big list of flags which shouldn't be used at all, but are367 * still around since these flags are also used in the userspace ABI.368 * We no longer accept modes with these types though:369 *370 * - DRM_MODE_TYPE_BUILTIN: Meant for hard-coded modes, unused.371 * Use DRM_MODE_TYPE_DRIVER instead.372 * - DRM_MODE_TYPE_DEFAULT: Again a leftover, use373 * DRM_MODE_TYPE_PREFERRED instead.374 * - DRM_MODE_TYPE_CLOCK_C and DRM_MODE_TYPE_CRTC_C: Define leftovers375 * which are stuck around for hysterical raisins only. No one has an376 * idea what they were meant for. Don't use.377 */378 u8 type;379 380 /**381 * @expose_to_userspace:382 *383 * Indicates whether the mode is to be exposed to the userspace.384 * This is to maintain a set of exposed modes while preparing385 * user-mode's list in drm_mode_getconnector ioctl. The purpose of386 * this only lies in the ioctl function, and is not to be used387 * outside the function.388 */389 bool expose_to_userspace;390 391 /**392 * @head:393 *394 * struct list_head for mode lists.395 */396 struct list_head head;397 398 /**399 * @name:400 *401 * Human-readable name of the mode, filled out with drm_mode_set_name().402 */403 char name[DRM_DISPLAY_MODE_LEN];404 405 /**406 * @status:407 *408 * Status of the mode, used to filter out modes not supported by the409 * hardware. See enum &drm_mode_status.410 */411 enum drm_mode_status status;412 413 /**414 * @picture_aspect_ratio:415 *416 * Field for setting the HDMI picture aspect ratio of a mode.417 */418 enum hdmi_picture_aspect picture_aspect_ratio;419 420};421 422/**423 * DRM_MODE_FMT - printf string for &struct drm_display_mode424 */425#define DRM_MODE_FMT "\"%s\": %d %d %d %d %d %d %d %d %d %d 0x%x 0x%x"426 427/**428 * DRM_MODE_ARG - printf arguments for &struct drm_display_mode429 * @m: display mode430 */431#define DRM_MODE_ARG(m) \432 (m)->name, drm_mode_vrefresh(m), (m)->clock, \433 (m)->hdisplay, (m)->hsync_start, (m)->hsync_end, (m)->htotal, \434 (m)->vdisplay, (m)->vsync_start, (m)->vsync_end, (m)->vtotal, \435 (m)->type, (m)->flags436 437#define obj_to_mode(x) container_of(x, struct drm_display_mode, base)438 439/**440 * drm_mode_is_stereo - check for stereo mode flags441 * @mode: drm_display_mode to check442 *443 * Returns:444 * True if the mode is one of the stereo modes (like side-by-side), false if445 * not.446 */447static inline bool drm_mode_is_stereo(const struct drm_display_mode *mode)448{449 return mode->flags & DRM_MODE_FLAG_3D_MASK;450}451 452struct drm_connector;453struct drm_cmdline_mode;454 455struct drm_display_mode *drm_mode_create(struct drm_device *dev);456void drm_mode_destroy(struct drm_device *dev, struct drm_display_mode *mode);457void drm_mode_convert_to_umode(struct drm_mode_modeinfo *out,458 const struct drm_display_mode *in);459int drm_mode_convert_umode(struct drm_device *dev,460 struct drm_display_mode *out,461 const struct drm_mode_modeinfo *in);462void drm_mode_probed_add(struct drm_connector *connector, struct drm_display_mode *mode);463void drm_mode_debug_printmodeline(const struct drm_display_mode *mode);464bool drm_mode_is_420_only(const struct drm_display_info *display,465 const struct drm_display_mode *mode);466bool drm_mode_is_420_also(const struct drm_display_info *display,467 const struct drm_display_mode *mode);468bool drm_mode_is_420(const struct drm_display_info *display,469 const struct drm_display_mode *mode);470void drm_set_preferred_mode(struct drm_connector *connector,471 int hpref, int vpref);472 473struct drm_display_mode *drm_analog_tv_mode(struct drm_device *dev,474 enum drm_connector_tv_mode mode,475 unsigned long pixel_clock_hz,476 unsigned int hdisplay,477 unsigned int vdisplay,478 bool interlace);479 480static inline struct drm_display_mode *drm_mode_analog_ntsc_480i(struct drm_device *dev)481{482 return drm_analog_tv_mode(dev, DRM_MODE_TV_MODE_NTSC, 13500000, 720, 480, true);483}484 485static inline struct drm_display_mode *drm_mode_analog_pal_576i(struct drm_device *dev)486{487 return drm_analog_tv_mode(dev, DRM_MODE_TV_MODE_PAL, 13500000, 720, 576, true);488}489 490struct drm_display_mode *drm_cvt_mode(struct drm_device *dev,491 int hdisplay, int vdisplay, int vrefresh,492 bool reduced, bool interlaced,493 bool margins);494struct drm_display_mode *drm_gtf_mode(struct drm_device *dev,495 int hdisplay, int vdisplay, int vrefresh,496 bool interlaced, int margins);497struct drm_display_mode *drm_gtf_mode_complex(struct drm_device *dev,498 int hdisplay, int vdisplay,499 int vrefresh, bool interlaced,500 int margins,501 int GTF_M, int GTF_2C,502 int GTF_K, int GTF_2J);503void drm_display_mode_from_videomode(const struct videomode *vm,504 struct drm_display_mode *dmode);505void drm_display_mode_to_videomode(const struct drm_display_mode *dmode,506 struct videomode *vm);507void drm_bus_flags_from_videomode(const struct videomode *vm, u32 *bus_flags);508 509#if defined(CONFIG_OF)510int of_get_drm_display_mode(struct device_node *np,511 struct drm_display_mode *dmode, u32 *bus_flags,512 int index);513int of_get_drm_panel_display_mode(struct device_node *np,514 struct drm_display_mode *dmode, u32 *bus_flags);515#else516static inline int of_get_drm_display_mode(struct device_node *np,517 struct drm_display_mode *dmode,518 u32 *bus_flags, int index)519{520 return -EINVAL;521}522 523static inline int of_get_drm_panel_display_mode(struct device_node *np,524 struct drm_display_mode *dmode, u32 *bus_flags)525{526 return -EINVAL;527}528#endif529 530void drm_mode_set_name(struct drm_display_mode *mode);531int drm_mode_vrefresh(const struct drm_display_mode *mode);532void drm_mode_get_hv_timing(const struct drm_display_mode *mode,533 int *hdisplay, int *vdisplay);534 535void drm_mode_set_crtcinfo(struct drm_display_mode *p,536 int adjust_flags);537void drm_mode_copy(struct drm_display_mode *dst,538 const struct drm_display_mode *src);539void drm_mode_init(struct drm_display_mode *dst,540 const struct drm_display_mode *src);541struct drm_display_mode *drm_mode_duplicate(struct drm_device *dev,542 const struct drm_display_mode *mode);543bool drm_mode_match(const struct drm_display_mode *mode1,544 const struct drm_display_mode *mode2,545 unsigned int match_flags);546bool drm_mode_equal(const struct drm_display_mode *mode1,547 const struct drm_display_mode *mode2);548bool drm_mode_equal_no_clocks(const struct drm_display_mode *mode1,549 const struct drm_display_mode *mode2);550bool drm_mode_equal_no_clocks_no_stereo(const struct drm_display_mode *mode1,551 const struct drm_display_mode *mode2);552 553/* for use by the crtc helper probe functions */554enum drm_mode_status drm_mode_validate_driver(struct drm_device *dev,555 const struct drm_display_mode *mode);556enum drm_mode_status drm_mode_validate_size(const struct drm_display_mode *mode,557 int maxX, int maxY);558enum drm_mode_status559drm_mode_validate_ycbcr420(const struct drm_display_mode *mode,560 struct drm_connector *connector);561void drm_mode_prune_invalid(struct drm_device *dev,562 struct list_head *mode_list, bool verbose);563void drm_mode_sort(struct list_head *mode_list);564void drm_connector_list_update(struct drm_connector *connector);565 566/* parsing cmdline modes */567bool568drm_mode_parse_command_line_for_connector(const char *mode_option,569 const struct drm_connector *connector,570 struct drm_cmdline_mode *mode);571struct drm_display_mode *572drm_mode_create_from_cmdline_mode(struct drm_device *dev,573 struct drm_cmdline_mode *cmd);574 575#endif /* __DRM_MODES_H__ */576