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 * 7 * Permission is hereby granted, free of charge, to any person obtaining a 8 * copy of this software and associated documentation files (the "Software"), 9 * to deal in the Software without restriction, including without limitation 10 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 11 * and/or sell copies of the Software, and to permit persons to whom the 12 * Software is furnished to do so, subject to the following conditions: 13 * 14 * The above copyright notice and this permission notice shall be included in 15 * all copies or substantial portions of the Software. 16 * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 20 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 21 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 22 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 23 * OTHER DEALINGS IN THE SOFTWARE. 24 */ 25 #ifndef __DRM_CRTC_H__ 26 #define __DRM_CRTC_H__ 27 28 #include <linux/i2c.h> 29 #include <linux/spinlock.h> 30 #include <linux/types.h> 31 #include <linux/idr.h> 32 #include <linux/fb.h> 33 #include <drm/drm_mode.h> 34 35 #include <drm/drm_fourcc.h> 36 37 struct drm_device; 38 struct drm_mode_set; 39 struct drm_framebuffer; 40 struct drm_object_properties; 41 struct drm_file; 42 struct drm_clip_rect; 43 44 #define DRM_MODE_OBJECT_CRTC 0xcccccccc 45 #define DRM_MODE_OBJECT_CONNECTOR 0xc0c0c0c0 46 #define DRM_MODE_OBJECT_ENCODER 0xe0e0e0e0 47 #define DRM_MODE_OBJECT_MODE 0xdededede 48 #define DRM_MODE_OBJECT_PROPERTY 0xb0b0b0b0 49 #define DRM_MODE_OBJECT_FB 0xfbfbfbfb 50 #define DRM_MODE_OBJECT_BLOB 0xbbbbbbbb 51 #define DRM_MODE_OBJECT_PLANE 0xeeeeeeee 52 #define DRM_MODE_OBJECT_BRIDGE 0xbdbdbdbd 53 54 struct drm_mode_object { 55 uint32_t id; 56 uint32_t type; 57 struct drm_object_properties *properties; 58 }; 59 60 #define DRM_OBJECT_MAX_PROPERTY 24 61 struct drm_object_properties { 62 int count; 63 uint32_t ids[DRM_OBJECT_MAX_PROPERTY]; 64 uint64_t values[DRM_OBJECT_MAX_PROPERTY]; 65 }; 66 67 /* 68 * Note on terminology: here, for brevity and convenience, we refer to connector 69 * control chips as 'CRTCs'. They can control any type of connector, VGA, LVDS, 70 * DVI, etc. And 'screen' refers to the whole of the visible display, which 71 * may span multiple monitors (and therefore multiple CRTC and connector 72 * structures). 73 */ 74 75 enum drm_mode_status { 76 MODE_OK = 0, /* Mode OK */ 77 MODE_HSYNC, /* hsync out of range */ 78 MODE_VSYNC, /* vsync out of range */ 79 MODE_H_ILLEGAL, /* mode has illegal horizontal timings */ 80 MODE_V_ILLEGAL, /* mode has illegal horizontal timings */ 81 MODE_BAD_WIDTH, /* requires an unsupported linepitch */ 82 MODE_NOMODE, /* no mode with a matching name */ 83 MODE_NO_INTERLACE, /* interlaced mode not supported */ 84 MODE_NO_DBLESCAN, /* doublescan mode not supported */ 85 MODE_NO_VSCAN, /* multiscan mode not supported */ 86 MODE_MEM, /* insufficient video memory */ 87 MODE_VIRTUAL_X, /* mode width too large for specified virtual size */ 88 MODE_VIRTUAL_Y, /* mode height too large for specified virtual size */ 89 MODE_MEM_VIRT, /* insufficient video memory given virtual size */ 90 MODE_NOCLOCK, /* no fixed clock available */ 91 MODE_CLOCK_HIGH, /* clock required is too high */ 92 MODE_CLOCK_LOW, /* clock required is too low */ 93 MODE_CLOCK_RANGE, /* clock/mode isn't in a ClockRange */ 94 MODE_BAD_HVALUE, /* horizontal timing was out of range */ 95 MODE_BAD_VVALUE, /* vertical timing was out of range */ 96 MODE_BAD_VSCAN, /* VScan value out of range */ 97 MODE_HSYNC_NARROW, /* horizontal sync too narrow */ 98 MODE_HSYNC_WIDE, /* horizontal sync too wide */ 99 MODE_HBLANK_NARROW, /* horizontal blanking too narrow */ 100 MODE_HBLANK_WIDE, /* horizontal blanking too wide */ 101 MODE_VSYNC_NARROW, /* vertical sync too narrow */ 102 MODE_VSYNC_WIDE, /* vertical sync too wide */ 103 MODE_VBLANK_NARROW, /* vertical blanking too narrow */ 104 MODE_VBLANK_WIDE, /* vertical blanking too wide */ 105 MODE_PANEL, /* exceeds panel dimensions */ 106 MODE_INTERLACE_WIDTH, /* width too large for interlaced mode */ 107 MODE_ONE_WIDTH, /* only one width is supported */ 108 MODE_ONE_HEIGHT, /* only one height is supported */ 109 MODE_ONE_SIZE, /* only one resolution is supported */ 110 MODE_NO_REDUCED, /* monitor doesn't accept reduced blanking */ 111 MODE_NO_STEREO, /* stereo modes not supported */ 112 MODE_UNVERIFIED = -3, /* mode needs to reverified */ 113 MODE_BAD = -2, /* unspecified reason */ 114 MODE_ERROR = -1 /* error condition */ 115 }; 116 117 #define DRM_MODE_TYPE_CLOCK_CRTC_C (DRM_MODE_TYPE_CLOCK_C | \ 118 DRM_MODE_TYPE_CRTC_C) 119 120 #define DRM_MODE(nm, t, c, hd, hss, hse, ht, hsk, vd, vss, vse, vt, vs, f) \ 121 .name = nm, .status = 0, .type = (t), .clock = (c), \ 122 .hdisplay = (hd), .hsync_start = (hss), .hsync_end = (hse), \ 123 .htotal = (ht), .hskew = (hsk), .vdisplay = (vd), \ 124 .vsync_start = (vss), .vsync_end = (vse), .vtotal = (vt), \ 125 .vscan = (vs), .flags = (f), \ 126 .base.type = DRM_MODE_OBJECT_MODE 127 128 #define CRTC_INTERLACE_HALVE_V (1 << 0) /* halve V values for interlacing */ 129 #define CRTC_STEREO_DOUBLE (1 << 1) /* adjust timings for stereo modes */ 130 131 #define DRM_MODE_FLAG_3D_MAX DRM_MODE_FLAG_3D_SIDE_BY_SIDE_HALF 132 133 struct drm_display_mode { 134 /* Header */ 135 struct list_head head; 136 struct drm_mode_object base; 137 138 char name[DRM_DISPLAY_MODE_LEN]; 139 140 enum drm_mode_status status; 141 unsigned int type; 142 143 /* Proposed mode values */ 144 int clock; /* in kHz */ 145 int hdisplay; 146 int hsync_start; 147 int hsync_end; 148 int htotal; 149 int hskew; 150 int vdisplay; 151 int vsync_start; 152 int vsync_end; 153 int vtotal; 154 int vscan; 155 unsigned int flags; 156 157 /* Addressable image size (may be 0 for projectors, etc.) */ 158 int width_mm; 159 int height_mm; 160 161 /* Actual mode we give to hw */ 162 int crtc_clock; /* in KHz */ 163 int crtc_hdisplay; 164 int crtc_hblank_start; 165 int crtc_hblank_end; 166 int crtc_hsync_start; 167 int crtc_hsync_end; 168 int crtc_htotal; 169 int crtc_hskew; 170 int crtc_vdisplay; 171 int crtc_vblank_start; 172 int crtc_vblank_end; 173 int crtc_vsync_start; 174 int crtc_vsync_end; 175 int crtc_vtotal; 176 177 /* Driver private mode info */ 178 int private_size; 179 int *private; 180 int private_flags; 181 182 int vrefresh; /* in Hz */ 183 int hsync; /* in kHz */ 184 }; 185 186 static inline bool drm_mode_is_stereo(const struct drm_display_mode *mode) 187 { 188 return mode->flags & DRM_MODE_FLAG_3D_MASK; 189 } 190 191 enum drm_connector_status { 192 connector_status_connected = 1, 193 connector_status_disconnected = 2, 194 connector_status_unknown = 3, 195 }; 196 197 enum subpixel_order { 198 SubPixelUnknown = 0, 199 SubPixelHorizontalRGB, 200 SubPixelHorizontalBGR, 201 SubPixelVerticalRGB, 202 SubPixelVerticalBGR, 203 SubPixelNone, 204 }; 205 206 #define DRM_COLOR_FORMAT_RGB444 (1<<0) 207 #define DRM_COLOR_FORMAT_YCRCB444 (1<<1) 208 #define DRM_COLOR_FORMAT_YCRCB422 (1<<2) 209 /* 210 * Describes a given display (e.g. CRT or flat panel) and its limitations. 211 */ 212 struct drm_display_info { 213 char name[DRM_DISPLAY_INFO_LEN]; 214 215 /* Physical size */ 216 unsigned int width_mm; 217 unsigned int height_mm; 218 219 /* Clock limits FIXME: storage format */ 220 unsigned int min_vfreq, max_vfreq; 221 unsigned int min_hfreq, max_hfreq; 222 unsigned int pixel_clock; 223 unsigned int bpc; 224 225 enum subpixel_order subpixel_order; 226 u32 color_formats; 227 228 u8 cea_rev; 229 }; 230 231 struct drm_framebuffer_funcs { 232 /* note: use drm_framebuffer_remove() */ 233 void (*destroy)(struct drm_framebuffer *framebuffer); 234 int (*create_handle)(struct drm_framebuffer *fb, 235 struct drm_file *file_priv, 236 unsigned int *handle); 237 /** 238 * Optinal callback for the dirty fb ioctl. 239 * 240 * Userspace can notify the driver via this callback 241 * that a area of the framebuffer has changed and should 242 * be flushed to the display hardware. 243 * 244 * See documentation in drm_mode.h for the struct 245 * drm_mode_fb_dirty_cmd for more information as all 246 * the semantics and arguments have a one to one mapping 247 * on this function. 248 */ 249 int (*dirty)(struct drm_framebuffer *framebuffer, 250 struct drm_file *file_priv, unsigned flags, 251 unsigned color, struct drm_clip_rect *clips, 252 unsigned num_clips); 253 }; 254 255 struct drm_framebuffer { 256 struct drm_device *dev; 257 /* 258 * Note that the fb is refcounted for the benefit of driver internals, 259 * for example some hw, disabling a CRTC/plane is asynchronous, and 260 * scanout does not actually complete until the next vblank. So some 261 * cleanup (like releasing the reference(s) on the backing GEM bo(s)) 262 * should be deferred. In cases like this, the driver would like to 263 * hold a ref to the fb even though it has already been removed from 264 * userspace perspective. 265 */ 266 struct kref refcount; 267 /* 268 * Place on the dev->mode_config.fb_list, access protected by 269 * dev->mode_config.fb_lock. 270 */ 271 struct list_head head; 272 struct drm_mode_object base; 273 const struct drm_framebuffer_funcs *funcs; 274 unsigned int pitches[4]; 275 unsigned int offsets[4]; 276 unsigned int width; 277 unsigned int height; 278 /* depth can be 15 or 16 */ 279 unsigned int depth; 280 int bits_per_pixel; 281 int flags; 282 uint32_t pixel_format; /* fourcc format */ 283 struct list_head filp_head; 284 /* if you are using the helper */ 285 void *helper_private; 286 }; 287 288 struct drm_property_blob { 289 struct drm_mode_object base; 290 struct list_head head; 291 unsigned int length; 292 unsigned char data[]; 293 }; 294 295 struct drm_property_enum { 296 uint64_t value; 297 struct list_head head; 298 char name[DRM_PROP_NAME_LEN]; 299 }; 300 301 struct drm_property { 302 struct list_head head; 303 struct drm_mode_object base; 304 uint32_t flags; 305 char name[DRM_PROP_NAME_LEN]; 306 uint32_t num_values; 307 uint64_t *values; 308 309 struct list_head enum_blob_list; 310 }; 311 312 struct drm_crtc; 313 struct drm_connector; 314 struct drm_encoder; 315 struct drm_pending_vblank_event; 316 struct drm_plane; 317 struct drm_bridge; 318 319 /** 320 * drm_crtc_funcs - control CRTCs for a given device 321 * @save: save CRTC state 322 * @restore: restore CRTC state 323 * @reset: reset CRTC after state has been invalidated (e.g. resume) 324 * @cursor_set: setup the cursor 325 * @cursor_move: move the cursor 326 * @gamma_set: specify color ramp for CRTC 327 * @destroy: deinit and free object 328 * @set_property: called when a property is changed 329 * @set_config: apply a new CRTC configuration 330 * @page_flip: initiate a page flip 331 * 332 * The drm_crtc_funcs structure is the central CRTC management structure 333 * in the DRM. Each CRTC controls one or more connectors (note that the name 334 * CRTC is simply historical, a CRTC may control LVDS, VGA, DVI, TV out, etc. 335 * connectors, not just CRTs). 336 * 337 * Each driver is responsible for filling out this structure at startup time, 338 * in addition to providing other modesetting features, like i2c and DDC 339 * bus accessors. 340 */ 341 struct drm_crtc_funcs { 342 /* Save CRTC state */ 343 void (*save)(struct drm_crtc *crtc); /* suspend? */ 344 /* Restore CRTC state */ 345 void (*restore)(struct drm_crtc *crtc); /* resume? */ 346 /* Reset CRTC state */ 347 void (*reset)(struct drm_crtc *crtc); 348 349 /* cursor controls */ 350 int (*cursor_set)(struct drm_crtc *crtc, struct drm_file *file_priv, 351 uint32_t handle, uint32_t width, uint32_t height); 352 int (*cursor_set2)(struct drm_crtc *crtc, struct drm_file *file_priv, 353 uint32_t handle, uint32_t width, uint32_t height, 354 int32_t hot_x, int32_t hot_y); 355 int (*cursor_move)(struct drm_crtc *crtc, int x, int y); 356 357 /* Set gamma on the CRTC */ 358 void (*gamma_set)(struct drm_crtc *crtc, u16 *r, u16 *g, u16 *b, 359 uint32_t start, uint32_t size); 360 /* Object destroy routine */ 361 void (*destroy)(struct drm_crtc *crtc); 362 363 int (*set_config)(struct drm_mode_set *set); 364 365 /* 366 * Flip to the given framebuffer. This implements the page 367 * flip ioctl described in drm_mode.h, specifically, the 368 * implementation must return immediately and block all 369 * rendering to the current fb until the flip has completed. 370 * If userspace set the event flag in the ioctl, the event 371 * argument will point to an event to send back when the flip 372 * completes, otherwise it will be NULL. 373 */ 374 int (*page_flip)(struct drm_crtc *crtc, 375 struct drm_framebuffer *fb, 376 struct drm_pending_vblank_event *event, 377 uint32_t flags); 378 379 int (*set_property)(struct drm_crtc *crtc, 380 struct drm_property *property, uint64_t val); 381 }; 382 383 /** 384 * drm_crtc - central CRTC control structure 385 * @dev: parent DRM device 386 * @head: list management 387 * @base: base KMS object for ID tracking etc. 388 * @enabled: is this CRTC enabled? 389 * @mode: current mode timings 390 * @hwmode: mode timings as programmed to hw regs 391 * @invert_dimensions: for purposes of error checking crtc vs fb sizes, 392 * invert the width/height of the crtc. This is used if the driver 393 * is performing 90 or 270 degree rotated scanout 394 * @x: x position on screen 395 * @y: y position on screen 396 * @funcs: CRTC control functions 397 * @gamma_size: size of gamma ramp 398 * @gamma_store: gamma ramp values 399 * @framedur_ns: precise frame timing 400 * @framedur_ns: precise line timing 401 * @pixeldur_ns: precise pixel timing 402 * @helper_private: mid-layer private data 403 * @properties: property tracking for this CRTC 404 * 405 * Each CRTC may have one or more connectors associated with it. This structure 406 * allows the CRTC to be controlled. 407 */ 408 struct drm_crtc { 409 struct drm_device *dev; 410 struct list_head head; 411 412 /** 413 * crtc mutex 414 * 415 * This provides a read lock for the overall crtc state (mode, dpms 416 * state, ...) and a write lock for everything which can be update 417 * without a full modeset (fb, cursor data, ...) 418 */ 419 struct mutex mutex; 420 421 struct drm_mode_object base; 422 423 /* framebuffer the connector is currently bound to */ 424 struct drm_framebuffer *fb; 425 426 /* Temporary tracking of the old fb while a modeset is ongoing. Used 427 * by drm_mode_set_config_internal to implement correct refcounting. */ 428 struct drm_framebuffer *old_fb; 429 430 bool enabled; 431 432 /* Requested mode from modesetting. */ 433 struct drm_display_mode mode; 434 435 /* Programmed mode in hw, after adjustments for encoders, 436 * crtc, panel scaling etc. Needed for timestamping etc. 437 */ 438 struct drm_display_mode hwmode; 439 440 bool invert_dimensions; 441 442 int x, y; 443 const struct drm_crtc_funcs *funcs; 444 445 /* CRTC gamma size for reporting to userspace */ 446 uint32_t gamma_size; 447 uint16_t *gamma_store; 448 449 /* Constants needed for precise vblank and swap timestamping. */ 450 s64 framedur_ns, linedur_ns, pixeldur_ns; 451 452 /* if you are using the helper */ 453 void *helper_private; 454 455 struct drm_object_properties properties; 456 }; 457 458 459 /** 460 * drm_connector_funcs - control connectors on a given device 461 * @dpms: set power state (see drm_crtc_funcs above) 462 * @save: save connector state 463 * @restore: restore connector state 464 * @reset: reset connector after state has been invalidated (e.g. resume) 465 * @detect: is this connector active? 466 * @fill_modes: fill mode list for this connector 467 * @set_property: property for this connector may need an update 468 * @destroy: make object go away 469 * @force: notify the driver that the connector is forced on 470 * 471 * Each CRTC may have one or more connectors attached to it. The functions 472 * below allow the core DRM code to control connectors, enumerate available modes, 473 * etc. 474 */ 475 struct drm_connector_funcs { 476 void (*dpms)(struct drm_connector *connector, int mode); 477 void (*save)(struct drm_connector *connector); 478 void (*restore)(struct drm_connector *connector); 479 void (*reset)(struct drm_connector *connector); 480 481 /* Check to see if anything is attached to the connector. 482 * @force is set to false whilst polling, true when checking the 483 * connector due to user request. @force can be used by the driver 484 * to avoid expensive, destructive operations during automated 485 * probing. 486 */ 487 enum drm_connector_status (*detect)(struct drm_connector *connector, 488 bool force); 489 int (*fill_modes)(struct drm_connector *connector, uint32_t max_width, uint32_t max_height); 490 int (*set_property)(struct drm_connector *connector, struct drm_property *property, 491 uint64_t val); 492 void (*destroy)(struct drm_connector *connector); 493 void (*force)(struct drm_connector *connector); 494 }; 495 496 /** 497 * drm_encoder_funcs - encoder controls 498 * @reset: reset state (e.g. at init or resume time) 499 * @destroy: cleanup and free associated data 500 * 501 * Encoders sit between CRTCs and connectors. 502 */ 503 struct drm_encoder_funcs { 504 void (*reset)(struct drm_encoder *encoder); 505 void (*destroy)(struct drm_encoder *encoder); 506 }; 507 508 #define DRM_CONNECTOR_MAX_ENCODER 3 509 510 /** 511 * drm_encoder - central DRM encoder structure 512 * @dev: parent DRM device 513 * @head: list management 514 * @base: base KMS object 515 * @encoder_type: one of the %DRM_MODE_ENCODER_<foo> types in drm_mode.h 516 * @possible_crtcs: bitmask of potential CRTC bindings 517 * @possible_clones: bitmask of potential sibling encoders for cloning 518 * @crtc: currently bound CRTC 519 * @bridge: bridge associated to the encoder 520 * @funcs: control functions 521 * @helper_private: mid-layer private data 522 * 523 * CRTCs drive pixels to encoders, which convert them into signals 524 * appropriate for a given connector or set of connectors. 525 */ 526 struct drm_encoder { 527 struct drm_device *dev; 528 struct list_head head; 529 530 struct drm_mode_object base; 531 int encoder_type; 532 uint32_t possible_crtcs; 533 uint32_t possible_clones; 534 535 struct drm_crtc *crtc; 536 struct drm_bridge *bridge; 537 const struct drm_encoder_funcs *funcs; 538 void *helper_private; 539 }; 540 541 enum drm_connector_force { 542 DRM_FORCE_UNSPECIFIED, 543 DRM_FORCE_OFF, 544 DRM_FORCE_ON, /* force on analog part normally */ 545 DRM_FORCE_ON_DIGITAL, /* for DVI-I use digital connector */ 546 }; 547 548 /* should we poll this connector for connects and disconnects */ 549 /* hot plug detectable */ 550 #define DRM_CONNECTOR_POLL_HPD (1 << 0) 551 /* poll for connections */ 552 #define DRM_CONNECTOR_POLL_CONNECT (1 << 1) 553 /* can cleanly poll for disconnections without flickering the screen */ 554 /* DACs should rarely do this without a lot of testing */ 555 #define DRM_CONNECTOR_POLL_DISCONNECT (1 << 2) 556 557 #define MAX_ELD_BYTES 128 558 559 /** 560 * drm_connector - central DRM connector control structure 561 * @dev: parent DRM device 562 * @kdev: kernel device for sysfs attributes 563 * @attr: sysfs attributes 564 * @head: list management 565 * @base: base KMS object 566 * @connector_type: one of the %DRM_MODE_CONNECTOR_<foo> types from drm_mode.h 567 * @connector_type_id: index into connector type enum 568 * @interlace_allowed: can this connector handle interlaced modes? 569 * @doublescan_allowed: can this connector handle doublescan? 570 * @modes: modes available on this connector (from fill_modes() + user) 571 * @status: one of the drm_connector_status enums (connected, not, or unknown) 572 * @probed_modes: list of modes derived directly from the display 573 * @display_info: information about attached display (e.g. from EDID) 574 * @funcs: connector control functions 575 * @edid_blob_ptr: DRM property containing EDID if present 576 * @properties: property tracking for this connector 577 * @polled: a %DRM_CONNECTOR_POLL_<foo> value for core driven polling 578 * @dpms: current dpms state 579 * @helper_private: mid-layer private data 580 * @force: a %DRM_FORCE_<foo> state for forced mode sets 581 * @encoder_ids: valid encoders for this connector 582 * @encoder: encoder driving this connector, if any 583 * @eld: EDID-like data, if present 584 * @dvi_dual: dual link DVI, if found 585 * @max_tmds_clock: max clock rate, if found 586 * @latency_present: AV delay info from ELD, if found 587 * @video_latency: video latency info from ELD, if found 588 * @audio_latency: audio latency info from ELD, if found 589 * @null_edid_counter: track sinks that give us all zeros for the EDID 590 * 591 * Each connector may be connected to one or more CRTCs, or may be clonable by 592 * another connector if they can share a CRTC. Each connector also has a specific 593 * position in the broader display (referred to as a 'screen' though it could 594 * span multiple monitors). 595 */ 596 struct drm_connector { 597 struct drm_device *dev; 598 struct device *kdev; 599 struct device_attribute *attr; 600 struct list_head head; 601 602 struct drm_mode_object base; 603 604 int connector_type; 605 int connector_type_id; 606 bool interlace_allowed; 607 bool doublescan_allowed; 608 bool stereo_allowed; 609 struct list_head modes; /* list of modes on this connector */ 610 611 enum drm_connector_status status; 612 613 /* these are modes added by probing with DDC or the BIOS */ 614 struct list_head probed_modes; 615 616 struct drm_display_info display_info; 617 const struct drm_connector_funcs *funcs; 618 619 struct drm_property_blob *edid_blob_ptr; 620 struct drm_object_properties properties; 621 622 uint8_t polled; /* DRM_CONNECTOR_POLL_* */ 623 624 /* requested DPMS state */ 625 int dpms; 626 627 void *helper_private; 628 629 /* forced on connector */ 630 enum drm_connector_force force; 631 uint32_t encoder_ids[DRM_CONNECTOR_MAX_ENCODER]; 632 struct drm_encoder *encoder; /* currently active encoder */ 633 634 /* EDID bits */ 635 uint8_t eld[MAX_ELD_BYTES]; 636 bool dvi_dual; 637 int max_tmds_clock; /* in MHz */ 638 bool latency_present[2]; 639 int video_latency[2]; /* [0]: progressive, [1]: interlaced */ 640 int audio_latency[2]; 641 int null_edid_counter; /* needed to workaround some HW bugs where we get all 0s */ 642 unsigned bad_edid_counter; 643 }; 644 645 /** 646 * drm_plane_funcs - driver plane control functions 647 * @update_plane: update the plane configuration 648 * @disable_plane: shut down the plane 649 * @destroy: clean up plane resources 650 * @set_property: called when a property is changed 651 */ 652 struct drm_plane_funcs { 653 int (*update_plane)(struct drm_plane *plane, 654 struct drm_crtc *crtc, struct drm_framebuffer *fb, 655 int crtc_x, int crtc_y, 656 unsigned int crtc_w, unsigned int crtc_h, 657 uint32_t src_x, uint32_t src_y, 658 uint32_t src_w, uint32_t src_h); 659 int (*disable_plane)(struct drm_plane *plane); 660 void (*destroy)(struct drm_plane *plane); 661 662 int (*set_property)(struct drm_plane *plane, 663 struct drm_property *property, uint64_t val); 664 }; 665 666 /** 667 * drm_plane - central DRM plane control structure 668 * @dev: DRM device this plane belongs to 669 * @head: for list management 670 * @base: base mode object 671 * @possible_crtcs: pipes this plane can be bound to 672 * @format_types: array of formats supported by this plane 673 * @format_count: number of formats supported 674 * @crtc: currently bound CRTC 675 * @fb: currently bound fb 676 * @funcs: helper functions 677 * @properties: property tracking for this plane 678 */ 679 struct drm_plane { 680 struct drm_device *dev; 681 struct list_head head; 682 683 struct drm_mode_object base; 684 685 uint32_t possible_crtcs; 686 uint32_t *format_types; 687 uint32_t format_count; 688 689 struct drm_crtc *crtc; 690 struct drm_framebuffer *fb; 691 692 const struct drm_plane_funcs *funcs; 693 694 struct drm_object_properties properties; 695 }; 696 697 /** 698 * drm_bridge_funcs - drm_bridge control functions 699 * @mode_fixup: Try to fixup (or reject entirely) proposed mode for this bridge 700 * @disable: Called right before encoder prepare, disables the bridge 701 * @post_disable: Called right after encoder prepare, for lockstepped disable 702 * @mode_set: Set this mode to the bridge 703 * @pre_enable: Called right before encoder commit, for lockstepped commit 704 * @enable: Called right after encoder commit, enables the bridge 705 * @destroy: make object go away 706 */ 707 struct drm_bridge_funcs { 708 bool (*mode_fixup)(struct drm_bridge *bridge, 709 const struct drm_display_mode *mode, 710 struct drm_display_mode *adjusted_mode); 711 void (*disable)(struct drm_bridge *bridge); 712 void (*post_disable)(struct drm_bridge *bridge); 713 void (*mode_set)(struct drm_bridge *bridge, 714 struct drm_display_mode *mode, 715 struct drm_display_mode *adjusted_mode); 716 void (*pre_enable)(struct drm_bridge *bridge); 717 void (*enable)(struct drm_bridge *bridge); 718 void (*destroy)(struct drm_bridge *bridge); 719 }; 720 721 /** 722 * drm_bridge - central DRM bridge control structure 723 * @dev: DRM device this bridge belongs to 724 * @head: list management 725 * @base: base mode object 726 * @funcs: control functions 727 * @driver_private: pointer to the bridge driver's internal context 728 */ 729 struct drm_bridge { 730 struct drm_device *dev; 731 struct list_head head; 732 733 struct drm_mode_object base; 734 735 const struct drm_bridge_funcs *funcs; 736 void *driver_private; 737 }; 738 739 /** 740 * drm_mode_set - new values for a CRTC config change 741 * @head: list management 742 * @fb: framebuffer to use for new config 743 * @crtc: CRTC whose configuration we're about to change 744 * @mode: mode timings to use 745 * @x: position of this CRTC relative to @fb 746 * @y: position of this CRTC relative to @fb 747 * @connectors: array of connectors to drive with this CRTC if possible 748 * @num_connectors: size of @connectors array 749 * 750 * Represents a single crtc the connectors that it drives with what mode 751 * and from which framebuffer it scans out from. 752 * 753 * This is used to set modes. 754 */ 755 struct drm_mode_set { 756 struct drm_framebuffer *fb; 757 struct drm_crtc *crtc; 758 struct drm_display_mode *mode; 759 760 uint32_t x; 761 uint32_t y; 762 763 struct drm_connector **connectors; 764 size_t num_connectors; 765 }; 766 767 /** 768 * struct drm_mode_config_funcs - basic driver provided mode setting functions 769 * @fb_create: create a new framebuffer object 770 * @output_poll_changed: function to handle output configuration changes 771 * 772 * Some global (i.e. not per-CRTC, connector, etc) mode setting functions that 773 * involve drivers. 774 */ 775 struct drm_mode_config_funcs { 776 struct drm_framebuffer *(*fb_create)(struct drm_device *dev, 777 struct drm_file *file_priv, 778 struct drm_mode_fb_cmd2 *mode_cmd); 779 void (*output_poll_changed)(struct drm_device *dev); 780 }; 781 782 /** 783 * drm_mode_group - group of mode setting resources for potential sub-grouping 784 * @num_crtcs: CRTC count 785 * @num_encoders: encoder count 786 * @num_connectors: connector count 787 * @id_list: list of KMS object IDs in this group 788 * 789 * Currently this simply tracks the global mode setting state. But in the 790 * future it could allow groups of objects to be set aside into independent 791 * control groups for use by different user level processes (e.g. two X servers 792 * running simultaneously on different heads, each with their own mode 793 * configuration and freedom of mode setting). 794 */ 795 struct drm_mode_group { 796 uint32_t num_crtcs; 797 uint32_t num_encoders; 798 uint32_t num_connectors; 799 uint32_t num_bridges; 800 801 /* list of object IDs for this group */ 802 uint32_t *id_list; 803 }; 804 805 /** 806 * drm_mode_config - Mode configuration control structure 807 * @mutex: mutex protecting KMS related lists and structures 808 * @idr_mutex: mutex for KMS ID allocation and management 809 * @crtc_idr: main KMS ID tracking object 810 * @num_fb: number of fbs available 811 * @fb_list: list of framebuffers available 812 * @num_connector: number of connectors on this device 813 * @connector_list: list of connector objects 814 * @num_bridge: number of bridges on this device 815 * @bridge_list: list of bridge objects 816 * @num_encoder: number of encoders on this device 817 * @encoder_list: list of encoder objects 818 * @num_crtc: number of CRTCs on this device 819 * @crtc_list: list of CRTC objects 820 * @min_width: minimum pixel width on this device 821 * @min_height: minimum pixel height on this device 822 * @max_width: maximum pixel width on this device 823 * @max_height: maximum pixel height on this device 824 * @funcs: core driver provided mode setting functions 825 * @fb_base: base address of the framebuffer 826 * @poll_enabled: track polling status for this device 827 * @output_poll_work: delayed work for polling in process context 828 * @*_property: core property tracking 829 * 830 * Core mode resource tracking structure. All CRTC, encoders, and connectors 831 * enumerated by the driver are added here, as are global properties. Some 832 * global restrictions are also here, e.g. dimension restrictions. 833 */ 834 struct drm_mode_config { 835 struct mutex mutex; /* protects configuration (mode lists etc.) */ 836 struct mutex idr_mutex; /* for IDR management */ 837 struct idr crtc_idr; /* use this idr for all IDs, fb, crtc, connector, modes - just makes life easier */ 838 /* this is limited to one for now */ 839 840 841 /** 842 * fb_lock - mutex to protect fb state 843 * 844 * Besides the global fb list his also protects the fbs list in the 845 * file_priv 846 */ 847 struct mutex fb_lock; 848 int num_fb; 849 struct list_head fb_list; 850 851 int num_connector; 852 struct list_head connector_list; 853 int num_bridge; 854 struct list_head bridge_list; 855 int num_encoder; 856 struct list_head encoder_list; 857 int num_plane; 858 struct list_head plane_list; 859 860 int num_crtc; 861 struct list_head crtc_list; 862 863 struct list_head property_list; 864 865 int min_width, min_height; 866 int max_width, max_height; 867 const struct drm_mode_config_funcs *funcs; 868 resource_size_t fb_base; 869 870 /* output poll support */ 871 bool poll_enabled; 872 bool poll_running; 873 struct delayed_work output_poll_work; 874 875 /* pointers to standard properties */ 876 struct list_head property_blob_list; 877 struct drm_property *edid_property; 878 struct drm_property *dpms_property; 879 880 /* DVI-I properties */ 881 struct drm_property *dvi_i_subconnector_property; 882 struct drm_property *dvi_i_select_subconnector_property; 883 884 /* TV properties */ 885 struct drm_property *tv_subconnector_property; 886 struct drm_property *tv_select_subconnector_property; 887 struct drm_property *tv_mode_property; 888 struct drm_property *tv_left_margin_property; 889 struct drm_property *tv_right_margin_property; 890 struct drm_property *tv_top_margin_property; 891 struct drm_property *tv_bottom_margin_property; 892 struct drm_property *tv_brightness_property; 893 struct drm_property *tv_contrast_property; 894 struct drm_property *tv_flicker_reduction_property; 895 struct drm_property *tv_overscan_property; 896 struct drm_property *tv_saturation_property; 897 struct drm_property *tv_hue_property; 898 899 /* Optional properties */ 900 struct drm_property *scaling_mode_property; 901 struct drm_property *dirty_info_property; 902 903 /* dumb ioctl parameters */ 904 uint32_t preferred_depth, prefer_shadow; 905 906 /* whether async page flip is supported or not */ 907 bool async_page_flip; 908 }; 909 910 #define obj_to_crtc(x) container_of(x, struct drm_crtc, base) 911 #define obj_to_connector(x) container_of(x, struct drm_connector, base) 912 #define obj_to_encoder(x) container_of(x, struct drm_encoder, base) 913 #define obj_to_mode(x) container_of(x, struct drm_display_mode, base) 914 #define obj_to_fb(x) container_of(x, struct drm_framebuffer, base) 915 #define obj_to_property(x) container_of(x, struct drm_property, base) 916 #define obj_to_blob(x) container_of(x, struct drm_property_blob, base) 917 #define obj_to_plane(x) container_of(x, struct drm_plane, base) 918 919 struct drm_prop_enum_list { 920 int type; 921 char *name; 922 }; 923 924 extern void drm_modeset_lock_all(struct drm_device *dev); 925 extern void drm_modeset_unlock_all(struct drm_device *dev); 926 extern void drm_warn_on_modeset_not_all_locked(struct drm_device *dev); 927 928 extern int drm_crtc_init(struct drm_device *dev, 929 struct drm_crtc *crtc, 930 const struct drm_crtc_funcs *funcs); 931 extern void drm_crtc_cleanup(struct drm_crtc *crtc); 932 933 extern void drm_connector_ida_init(void); 934 extern void drm_connector_ida_destroy(void); 935 extern int drm_connector_init(struct drm_device *dev, 936 struct drm_connector *connector, 937 const struct drm_connector_funcs *funcs, 938 int connector_type); 939 940 extern void drm_connector_cleanup(struct drm_connector *connector); 941 /* helper to unplug all connectors from sysfs for device */ 942 extern void drm_connector_unplug_all(struct drm_device *dev); 943 944 extern int drm_bridge_init(struct drm_device *dev, struct drm_bridge *bridge, 945 const struct drm_bridge_funcs *funcs); 946 extern void drm_bridge_cleanup(struct drm_bridge *bridge); 947 948 extern int drm_encoder_init(struct drm_device *dev, 949 struct drm_encoder *encoder, 950 const struct drm_encoder_funcs *funcs, 951 int encoder_type); 952 953 extern int drm_plane_init(struct drm_device *dev, 954 struct drm_plane *plane, 955 unsigned long possible_crtcs, 956 const struct drm_plane_funcs *funcs, 957 const uint32_t *formats, uint32_t format_count, 958 bool priv); 959 extern void drm_plane_cleanup(struct drm_plane *plane); 960 extern void drm_plane_force_disable(struct drm_plane *plane); 961 962 extern void drm_encoder_cleanup(struct drm_encoder *encoder); 963 964 extern const char *drm_get_connector_name(const struct drm_connector *connector); 965 extern const char *drm_get_connector_status_name(enum drm_connector_status status); 966 extern const char *drm_get_dpms_name(int val); 967 extern const char *drm_get_dvi_i_subconnector_name(int val); 968 extern const char *drm_get_dvi_i_select_name(int val); 969 extern const char *drm_get_tv_subconnector_name(int val); 970 extern const char *drm_get_tv_select_name(int val); 971 extern void drm_fb_release(struct drm_file *file_priv); 972 extern int drm_mode_group_init_legacy_group(struct drm_device *dev, struct drm_mode_group *group); 973 extern bool drm_probe_ddc(struct i2c_adapter *adapter); 974 extern struct edid *drm_get_edid(struct drm_connector *connector, 975 struct i2c_adapter *adapter); 976 extern struct edid *drm_edid_duplicate(const struct edid *edid); 977 extern int drm_add_edid_modes(struct drm_connector *connector, struct edid *edid); 978 extern void drm_mode_probed_add(struct drm_connector *connector, struct drm_display_mode *mode); 979 extern void drm_mode_copy(struct drm_display_mode *dst, const struct drm_display_mode *src); 980 extern struct drm_display_mode *drm_mode_duplicate(struct drm_device *dev, 981 const struct drm_display_mode *mode); 982 extern void drm_mode_debug_printmodeline(const struct drm_display_mode *mode); 983 extern void drm_mode_config_init(struct drm_device *dev); 984 extern void drm_mode_config_reset(struct drm_device *dev); 985 extern void drm_mode_config_cleanup(struct drm_device *dev); 986 extern void drm_mode_set_name(struct drm_display_mode *mode); 987 extern bool drm_mode_equal(const struct drm_display_mode *mode1, const struct drm_display_mode *mode2); 988 extern bool drm_mode_equal_no_clocks_no_stereo(const struct drm_display_mode *mode1, const struct drm_display_mode *mode2); 989 extern int drm_mode_width(const struct drm_display_mode *mode); 990 extern int drm_mode_height(const struct drm_display_mode *mode); 991 992 /* for us by fb module */ 993 extern struct drm_display_mode *drm_mode_create(struct drm_device *dev); 994 extern void drm_mode_destroy(struct drm_device *dev, struct drm_display_mode *mode); 995 extern void drm_mode_validate_size(struct drm_device *dev, 996 struct list_head *mode_list, 997 int maxX, int maxY, int maxPitch); 998 extern void drm_mode_prune_invalid(struct drm_device *dev, 999 struct list_head *mode_list, bool verbose); 1000 extern void drm_mode_sort(struct list_head *mode_list); 1001 extern int drm_mode_hsync(const struct drm_display_mode *mode); 1002 extern int drm_mode_vrefresh(const struct drm_display_mode *mode); 1003 extern void drm_mode_set_crtcinfo(struct drm_display_mode *p, 1004 int adjust_flags); 1005 extern void drm_mode_connector_list_update(struct drm_connector *connector); 1006 extern int drm_mode_connector_update_edid_property(struct drm_connector *connector, 1007 struct edid *edid); 1008 extern int drm_object_property_set_value(struct drm_mode_object *obj, 1009 struct drm_property *property, 1010 uint64_t val); 1011 extern int drm_object_property_get_value(struct drm_mode_object *obj, 1012 struct drm_property *property, 1013 uint64_t *value); 1014 extern int drm_framebuffer_init(struct drm_device *dev, 1015 struct drm_framebuffer *fb, 1016 const struct drm_framebuffer_funcs *funcs); 1017 extern struct drm_framebuffer *drm_framebuffer_lookup(struct drm_device *dev, 1018 uint32_t id); 1019 extern void drm_framebuffer_unreference(struct drm_framebuffer *fb); 1020 extern void drm_framebuffer_reference(struct drm_framebuffer *fb); 1021 extern void drm_framebuffer_remove(struct drm_framebuffer *fb); 1022 extern void drm_framebuffer_cleanup(struct drm_framebuffer *fb); 1023 extern void drm_framebuffer_unregister_private(struct drm_framebuffer *fb); 1024 1025 extern void drm_object_attach_property(struct drm_mode_object *obj, 1026 struct drm_property *property, 1027 uint64_t init_val); 1028 extern struct drm_property *drm_property_create(struct drm_device *dev, int flags, 1029 const char *name, int num_values); 1030 extern struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags, 1031 const char *name, 1032 const struct drm_prop_enum_list *props, 1033 int num_values); 1034 struct drm_property *drm_property_create_bitmask(struct drm_device *dev, 1035 int flags, const char *name, 1036 const struct drm_prop_enum_list *props, 1037 int num_values); 1038 struct drm_property *drm_property_create_range(struct drm_device *dev, int flags, 1039 const char *name, 1040 uint64_t min, uint64_t max); 1041 extern void drm_property_destroy(struct drm_device *dev, struct drm_property *property); 1042 extern int drm_property_add_enum(struct drm_property *property, int index, 1043 uint64_t value, const char *name); 1044 extern int drm_mode_create_dvi_i_properties(struct drm_device *dev); 1045 extern int drm_mode_create_tv_properties(struct drm_device *dev, int num_formats, 1046 char *formats[]); 1047 extern int drm_mode_create_scaling_mode_property(struct drm_device *dev); 1048 extern int drm_mode_create_dirty_info_property(struct drm_device *dev); 1049 extern const char *drm_get_encoder_name(const struct drm_encoder *encoder); 1050 1051 extern int drm_mode_connector_attach_encoder(struct drm_connector *connector, 1052 struct drm_encoder *encoder); 1053 extern void drm_mode_connector_detach_encoder(struct drm_connector *connector, 1054 struct drm_encoder *encoder); 1055 extern int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc, 1056 int gamma_size); 1057 extern struct drm_mode_object *drm_mode_object_find(struct drm_device *dev, 1058 uint32_t id, uint32_t type); 1059 /* IOCTLs */ 1060 extern int drm_mode_getresources(struct drm_device *dev, 1061 void *data, struct drm_file *file_priv); 1062 extern int drm_mode_getplane_res(struct drm_device *dev, void *data, 1063 struct drm_file *file_priv); 1064 extern int drm_mode_getcrtc(struct drm_device *dev, 1065 void *data, struct drm_file *file_priv); 1066 extern int drm_mode_getconnector(struct drm_device *dev, 1067 void *data, struct drm_file *file_priv); 1068 extern int drm_mode_set_config_internal(struct drm_mode_set *set); 1069 extern int drm_mode_setcrtc(struct drm_device *dev, 1070 void *data, struct drm_file *file_priv); 1071 extern int drm_mode_getplane(struct drm_device *dev, 1072 void *data, struct drm_file *file_priv); 1073 extern int drm_mode_setplane(struct drm_device *dev, 1074 void *data, struct drm_file *file_priv); 1075 extern int drm_mode_cursor_ioctl(struct drm_device *dev, 1076 void *data, struct drm_file *file_priv); 1077 extern int drm_mode_cursor2_ioctl(struct drm_device *dev, 1078 void *data, struct drm_file *file_priv); 1079 extern int drm_mode_addfb(struct drm_device *dev, 1080 void *data, struct drm_file *file_priv); 1081 extern int drm_mode_addfb2(struct drm_device *dev, 1082 void *data, struct drm_file *file_priv); 1083 extern uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth); 1084 extern int drm_mode_rmfb(struct drm_device *dev, 1085 void *data, struct drm_file *file_priv); 1086 extern int drm_mode_getfb(struct drm_device *dev, 1087 void *data, struct drm_file *file_priv); 1088 extern int drm_mode_dirtyfb_ioctl(struct drm_device *dev, 1089 void *data, struct drm_file *file_priv); 1090 1091 extern int drm_mode_getproperty_ioctl(struct drm_device *dev, 1092 void *data, struct drm_file *file_priv); 1093 extern int drm_mode_getblob_ioctl(struct drm_device *dev, 1094 void *data, struct drm_file *file_priv); 1095 extern int drm_mode_connector_property_set_ioctl(struct drm_device *dev, 1096 void *data, struct drm_file *file_priv); 1097 extern int drm_mode_getencoder(struct drm_device *dev, 1098 void *data, struct drm_file *file_priv); 1099 extern int drm_mode_gamma_get_ioctl(struct drm_device *dev, 1100 void *data, struct drm_file *file_priv); 1101 extern int drm_mode_gamma_set_ioctl(struct drm_device *dev, 1102 void *data, struct drm_file *file_priv); 1103 extern u8 drm_match_cea_mode(const struct drm_display_mode *to_match); 1104 extern bool drm_detect_hdmi_monitor(struct edid *edid); 1105 extern bool drm_detect_monitor_audio(struct edid *edid); 1106 extern bool drm_rgb_quant_range_selectable(struct edid *edid); 1107 extern int drm_mode_page_flip_ioctl(struct drm_device *dev, 1108 void *data, struct drm_file *file_priv); 1109 extern struct drm_display_mode *drm_cvt_mode(struct drm_device *dev, 1110 int hdisplay, int vdisplay, int vrefresh, 1111 bool reduced, bool interlaced, bool margins); 1112 extern struct drm_display_mode *drm_gtf_mode(struct drm_device *dev, 1113 int hdisplay, int vdisplay, int vrefresh, 1114 bool interlaced, int margins); 1115 extern struct drm_display_mode *drm_gtf_mode_complex(struct drm_device *dev, 1116 int hdisplay, int vdisplay, int vrefresh, 1117 bool interlaced, int margins, int GTF_M, 1118 int GTF_2C, int GTF_K, int GTF_2J); 1119 extern int drm_add_modes_noedid(struct drm_connector *connector, 1120 int hdisplay, int vdisplay); 1121 extern void drm_set_preferred_mode(struct drm_connector *connector, 1122 int hpref, int vpref); 1123 1124 extern int drm_edid_header_is_valid(const u8 *raw_edid); 1125 extern bool drm_edid_block_valid(u8 *raw_edid, int block, bool print_bad_edid); 1126 extern bool drm_edid_is_valid(struct edid *edid); 1127 struct drm_display_mode *drm_mode_find_dmt(struct drm_device *dev, 1128 int hsize, int vsize, int fresh, 1129 bool rb); 1130 1131 extern int drm_mode_create_dumb_ioctl(struct drm_device *dev, 1132 void *data, struct drm_file *file_priv); 1133 extern int drm_mode_mmap_dumb_ioctl(struct drm_device *dev, 1134 void *data, struct drm_file *file_priv); 1135 extern int drm_mode_destroy_dumb_ioctl(struct drm_device *dev, 1136 void *data, struct drm_file *file_priv); 1137 extern int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data, 1138 struct drm_file *file_priv); 1139 extern int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data, 1140 struct drm_file *file_priv); 1141 1142 extern void drm_fb_get_bpp_depth(uint32_t format, unsigned int *depth, 1143 int *bpp); 1144 extern int drm_format_num_planes(uint32_t format); 1145 extern int drm_format_plane_cpp(uint32_t format, int plane); 1146 extern int drm_format_horz_chroma_subsampling(uint32_t format); 1147 extern int drm_format_vert_chroma_subsampling(uint32_t format); 1148 extern const char *drm_get_format_name(uint32_t format); 1149 1150 /* Helpers */ 1151 static inline struct drm_crtc *drm_crtc_find(struct drm_device *dev, 1152 uint32_t id) 1153 { 1154 struct drm_mode_object *mo; 1155 mo = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_CRTC); 1156 return mo ? obj_to_crtc(mo) : NULL; 1157 } 1158 1159 static inline struct drm_encoder *drm_encoder_find(struct drm_device *dev, 1160 uint32_t id) 1161 { 1162 struct drm_mode_object *mo; 1163 mo = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_ENCODER); 1164 return mo ? obj_to_encoder(mo) : NULL; 1165 } 1166 1167 #endif /* __DRM_CRTC_H__ */ 1168