drm_crtc.h revision 1.7
1 /* $NetBSD: drm_crtc.h,v 1.7 2018/08/27 06:46:02 riastradh Exp $ */ 2 3 /* 4 * Copyright 2006 Keith Packard 5 * Copyright 2007-2008 Dave Airlie 6 * Copyright 2007-2008 Intel Corporation 7 * Jesse Barnes <jesse.barnes (at) intel.com> 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_CRTC_H__ 28 #define __DRM_CRTC_H__ 29 30 #include <linux/i2c.h> 31 #include <linux/spinlock.h> 32 #include <linux/types.h> 33 #include <linux/idr.h> 34 #include <linux/fb.h> 35 #include <linux/hdmi.h> 36 #include <linux/media-bus-format.h> 37 #include <linux/kref.h> 38 #include <linux/mutex.h> 39 #include <linux/workqueue.h> 40 #include <uapi/drm/drm_mode.h> 41 #include <uapi/drm/drm_fourcc.h> 42 #include <drm/drm_modeset_lock.h> 43 44 struct drm_device; 45 struct drm_mode_set; 46 struct drm_framebuffer; 47 struct drm_object_properties; 48 struct drm_file; 49 struct drm_clip_rect; 50 struct device_node; 51 struct fence; 52 53 #define DRM_MODE_OBJECT_CRTC 0xcccccccc 54 #define DRM_MODE_OBJECT_CONNECTOR 0xc0c0c0c0 55 #define DRM_MODE_OBJECT_ENCODER 0xe0e0e0e0 56 #define DRM_MODE_OBJECT_MODE 0xdededede 57 #define DRM_MODE_OBJECT_PROPERTY 0xb0b0b0b0 58 #define DRM_MODE_OBJECT_FB 0xfbfbfbfb 59 #define DRM_MODE_OBJECT_BLOB 0xbbbbbbbb 60 #define DRM_MODE_OBJECT_PLANE 0xeeeeeeee 61 #define DRM_MODE_OBJECT_ANY 0 62 63 struct drm_mode_object { 64 uint32_t id; 65 uint32_t type; 66 struct drm_object_properties *properties; 67 }; 68 69 #define DRM_OBJECT_MAX_PROPERTY 24 70 struct drm_object_properties { 71 int count, atomic_count; 72 /* NOTE: if we ever start dynamically destroying properties (ie. 73 * not at drm_mode_config_cleanup() time), then we'd have to do 74 * a better job of detaching property from mode objects to avoid 75 * dangling property pointers: 76 */ 77 struct drm_property *properties[DRM_OBJECT_MAX_PROPERTY]; 78 /* do not read/write values directly, but use drm_object_property_get_value() 79 * and drm_object_property_set_value(): 80 */ 81 uint64_t values[DRM_OBJECT_MAX_PROPERTY]; 82 }; 83 84 static inline int64_t U642I64(uint64_t val) 85 { 86 return (int64_t)*((int64_t *)&val); 87 } 88 static inline uint64_t I642U64(int64_t val) 89 { 90 return (uint64_t)*((uint64_t *)&val); 91 } 92 93 /* rotation property bits */ 94 #define DRM_ROTATE_MASK 0x0f 95 #define DRM_ROTATE_0 0 96 #define DRM_ROTATE_90 1 97 #define DRM_ROTATE_180 2 98 #define DRM_ROTATE_270 3 99 #define DRM_REFLECT_MASK (~DRM_ROTATE_MASK) 100 #define DRM_REFLECT_X 4 101 #define DRM_REFLECT_Y 5 102 103 enum drm_connector_force { 104 DRM_FORCE_UNSPECIFIED, 105 DRM_FORCE_OFF, 106 DRM_FORCE_ON, /* force on analog part normally */ 107 DRM_FORCE_ON_DIGITAL, /* for DVI-I use digital connector */ 108 }; 109 110 #include <drm/drm_modes.h> 111 112 enum drm_connector_status { 113 connector_status_connected = 1, 114 connector_status_disconnected = 2, 115 connector_status_unknown = 3, 116 }; 117 118 enum subpixel_order { 119 SubPixelUnknown = 0, 120 SubPixelHorizontalRGB, 121 SubPixelHorizontalBGR, 122 SubPixelVerticalRGB, 123 SubPixelVerticalBGR, 124 SubPixelNone, 125 }; 126 127 #define DRM_COLOR_FORMAT_RGB444 (1<<0) 128 #define DRM_COLOR_FORMAT_YCRCB444 (1<<1) 129 #define DRM_COLOR_FORMAT_YCRCB422 (1<<2) 130 /* 131 * Describes a given display (e.g. CRT or flat panel) and its limitations. 132 */ 133 struct drm_display_info { 134 char name[DRM_DISPLAY_INFO_LEN]; 135 136 /* Physical size */ 137 unsigned int width_mm; 138 unsigned int height_mm; 139 140 /* Clock limits FIXME: storage format */ 141 unsigned int min_vfreq, max_vfreq; 142 unsigned int min_hfreq, max_hfreq; 143 unsigned int pixel_clock; 144 unsigned int bpc; 145 146 enum subpixel_order subpixel_order; 147 u32 color_formats; 148 149 u32 *bus_formats; 150 unsigned int num_bus_formats; 151 152 /* Mask of supported hdmi deep color modes */ 153 u8 edid_hdmi_dc_modes; 154 155 u8 cea_rev; 156 }; 157 158 /* data corresponds to displayid vend/prod/serial */ 159 struct drm_tile_group { 160 struct kref refcount; 161 struct drm_device *dev; 162 int id; 163 u8 group_data[8]; 164 }; 165 166 struct drm_framebuffer_funcs { 167 /* note: use drm_framebuffer_remove() */ 168 void (*destroy)(struct drm_framebuffer *framebuffer); 169 int (*create_handle)(struct drm_framebuffer *fb, 170 struct drm_file *file_priv, 171 unsigned int *handle); 172 /* 173 * Optional callback for the dirty fb ioctl. 174 * 175 * Userspace can notify the driver via this callback 176 * that a area of the framebuffer has changed and should 177 * be flushed to the display hardware. 178 * 179 * See documentation in drm_mode.h for the struct 180 * drm_mode_fb_dirty_cmd for more information as all 181 * the semantics and arguments have a one to one mapping 182 * on this function. 183 */ 184 int (*dirty)(struct drm_framebuffer *framebuffer, 185 struct drm_file *file_priv, unsigned flags, 186 unsigned color, struct drm_clip_rect *clips, 187 unsigned num_clips); 188 }; 189 190 struct drm_framebuffer { 191 struct drm_device *dev; 192 /* 193 * Note that the fb is refcounted for the benefit of driver internals, 194 * for example some hw, disabling a CRTC/plane is asynchronous, and 195 * scanout does not actually complete until the next vblank. So some 196 * cleanup (like releasing the reference(s) on the backing GEM bo(s)) 197 * should be deferred. In cases like this, the driver would like to 198 * hold a ref to the fb even though it has already been removed from 199 * userspace perspective. 200 */ 201 struct kref refcount; 202 /* 203 * Place on the dev->mode_config.fb_list, access protected by 204 * dev->mode_config.fb_lock. 205 */ 206 struct list_head head; 207 struct drm_mode_object base; 208 const struct drm_framebuffer_funcs *funcs; 209 unsigned int pitches[4]; 210 unsigned int offsets[4]; 211 uint64_t modifier[4]; 212 unsigned int width; 213 unsigned int height; 214 /* depth can be 15 or 16 */ 215 unsigned int depth; 216 int bits_per_pixel; 217 int flags; 218 uint32_t pixel_format; /* fourcc format */ 219 struct list_head filp_head; 220 }; 221 222 struct drm_property_blob { 223 struct drm_mode_object base; 224 struct drm_device *dev; 225 struct kref refcount; 226 struct list_head head_global; 227 struct list_head head_file; 228 size_t length; 229 unsigned char data[]; 230 }; 231 232 struct drm_property_enum { 233 uint64_t value; 234 struct list_head head; 235 char name[DRM_PROP_NAME_LEN]; 236 }; 237 238 struct drm_property { 239 struct list_head head; 240 struct drm_mode_object base; 241 uint32_t flags; 242 char name[DRM_PROP_NAME_LEN]; 243 uint32_t num_values; 244 uint64_t *values; 245 struct drm_device *dev; 246 247 struct list_head enum_list; 248 }; 249 250 struct drm_crtc; 251 struct drm_connector; 252 struct drm_encoder; 253 struct drm_pending_vblank_event; 254 struct drm_plane; 255 struct drm_bridge; 256 struct drm_atomic_state; 257 258 /** 259 * struct drm_crtc_state - mutable CRTC state 260 * @crtc: backpointer to the CRTC 261 * @enable: whether the CRTC should be enabled, gates all other state 262 * @active: whether the CRTC is actively displaying (used for DPMS) 263 * @planes_changed: planes on this crtc are updated 264 * @mode_changed: crtc_state->mode or crtc_state->enable has been changed 265 * @active_changed: crtc_state->active has been toggled. 266 * @connectors_changed: connectors to this crtc have been updated 267 * @plane_mask: bitmask of (1 << drm_plane_index(plane)) of attached planes 268 * @last_vblank_count: for helpers and drivers to capture the vblank of the 269 * update to ensure framebuffer cleanup isn't done too early 270 * @adjusted_mode: for use by helpers and drivers to compute adjusted mode timings 271 * @mode: current mode timings 272 * @event: optional pointer to a DRM event to signal upon completion of the 273 * state update 274 * @state: backpointer to global drm_atomic_state 275 * 276 * Note that the distinction between @enable and @active is rather subtile: 277 * Flipping @active while @enable is set without changing anything else may 278 * never return in a failure from the ->atomic_check callback. Userspace assumes 279 * that a DPMS On will always succeed. In other words: @enable controls resource 280 * assignment, @active controls the actual hardware state. 281 */ 282 struct drm_crtc_state { 283 struct drm_crtc *crtc; 284 285 bool enable; 286 bool active; 287 288 /* computed state bits used by helpers and drivers */ 289 bool planes_changed : 1; 290 bool mode_changed : 1; 291 bool active_changed : 1; 292 bool connectors_changed : 1; 293 294 /* attached planes bitmask: 295 * WARNING: transitional helpers do not maintain plane_mask so 296 * drivers not converted over to atomic helpers should not rely 297 * on plane_mask being accurate! 298 */ 299 u32 plane_mask; 300 301 /* last_vblank_count: for vblank waits before cleanup */ 302 u32 last_vblank_count; 303 304 /* adjusted_mode: for use by helpers and drivers */ 305 struct drm_display_mode adjusted_mode; 306 307 struct drm_display_mode mode; 308 309 /* blob property to expose current mode to atomic userspace */ 310 struct drm_property_blob *mode_blob; 311 312 struct drm_pending_vblank_event *event; 313 314 struct drm_atomic_state *state; 315 }; 316 317 /** 318 * struct drm_crtc_funcs - control CRTCs for a given device 319 * @save: save CRTC state 320 * @restore: restore CRTC state 321 * @reset: reset CRTC after state has been invalidated (e.g. resume) 322 * @cursor_set: setup the cursor 323 * @cursor_set2: setup the cursor with hotspot, superseeds @cursor_set if set 324 * @cursor_move: move the cursor 325 * @gamma_set: specify color ramp for CRTC 326 * @destroy: deinit and free object 327 * @set_property: called when a property is changed 328 * @set_config: apply a new CRTC configuration 329 * @page_flip: initiate a page flip 330 * @atomic_duplicate_state: duplicate the atomic state for this CRTC 331 * @atomic_destroy_state: destroy an atomic state for this CRTC 332 * @atomic_set_property: set a property on an atomic state for this CRTC 333 * (do not call directly, use drm_atomic_crtc_set_property()) 334 * @atomic_get_property: get a property on an atomic state for this CRTC 335 * (do not call directly, use drm_atomic_crtc_get_property()) 336 * 337 * The drm_crtc_funcs structure is the central CRTC management structure 338 * in the DRM. Each CRTC controls one or more connectors (note that the name 339 * CRTC is simply historical, a CRTC may control LVDS, VGA, DVI, TV out, etc. 340 * connectors, not just CRTs). 341 * 342 * Each driver is responsible for filling out this structure at startup time, 343 * in addition to providing other modesetting features, like i2c and DDC 344 * bus accessors. 345 */ 346 struct drm_crtc_funcs { 347 /* Save CRTC state */ 348 void (*save)(struct drm_crtc *crtc); /* suspend? */ 349 /* Restore CRTC state */ 350 void (*restore)(struct drm_crtc *crtc); /* resume? */ 351 /* Reset CRTC state */ 352 void (*reset)(struct drm_crtc *crtc); 353 354 /* cursor controls */ 355 int (*cursor_set)(struct drm_crtc *crtc, struct drm_file *file_priv, 356 uint32_t handle, uint32_t width, uint32_t height); 357 int (*cursor_set2)(struct drm_crtc *crtc, struct drm_file *file_priv, 358 uint32_t handle, uint32_t width, uint32_t height, 359 int32_t hot_x, int32_t hot_y); 360 int (*cursor_move)(struct drm_crtc *crtc, int x, int y); 361 362 /* Set gamma on the CRTC */ 363 void (*gamma_set)(struct drm_crtc *crtc, u16 *r, u16 *g, u16 *b, 364 uint32_t start, uint32_t size); 365 /* Object destroy routine */ 366 void (*destroy)(struct drm_crtc *crtc); 367 368 int (*set_config)(struct drm_mode_set *set); 369 370 /* 371 * Flip to the given framebuffer. This implements the page 372 * flip ioctl described in drm_mode.h, specifically, the 373 * implementation must return immediately and block all 374 * rendering to the current fb until the flip has completed. 375 * If userspace set the event flag in the ioctl, the event 376 * argument will point to an event to send back when the flip 377 * completes, otherwise it will be NULL. 378 */ 379 int (*page_flip)(struct drm_crtc *crtc, 380 struct drm_framebuffer *fb, 381 struct drm_pending_vblank_event *event, 382 uint32_t flags); 383 384 int (*set_property)(struct drm_crtc *crtc, 385 struct drm_property *property, uint64_t val); 386 387 /* atomic update handling */ 388 struct drm_crtc_state *(*atomic_duplicate_state)(struct drm_crtc *crtc); 389 void (*atomic_destroy_state)(struct drm_crtc *crtc, 390 struct drm_crtc_state *state); 391 int (*atomic_set_property)(struct drm_crtc *crtc, 392 struct drm_crtc_state *state, 393 struct drm_property *property, 394 uint64_t val); 395 int (*atomic_get_property)(struct drm_crtc *crtc, 396 const struct drm_crtc_state *state, 397 struct drm_property *property, 398 uint64_t *val); 399 }; 400 401 /** 402 * struct drm_crtc - central CRTC control structure 403 * @dev: parent DRM device 404 * @port: OF node used by drm_of_find_possible_crtcs() 405 * @head: list management 406 * @mutex: per-CRTC locking 407 * @base: base KMS object for ID tracking etc. 408 * @primary: primary plane for this CRTC 409 * @cursor: cursor plane for this CRTC 410 * @cursor_x: current x position of the cursor, used for universal cursor planes 411 * @cursor_y: current y position of the cursor, used for universal cursor planes 412 * @enabled: is this CRTC enabled? 413 * @mode: current mode timings 414 * @hwmode: mode timings as programmed to hw regs 415 * @x: x position on screen 416 * @y: y position on screen 417 * @funcs: CRTC control functions 418 * @gamma_size: size of gamma ramp 419 * @gamma_store: gamma ramp values 420 * @helper_private: mid-layer private data 421 * @properties: property tracking for this CRTC 422 * @state: current atomic state for this CRTC 423 * @acquire_ctx: per-CRTC implicit acquire context used by atomic drivers for 424 * legacy ioctls 425 * 426 * Each CRTC may have one or more connectors associated with it. This structure 427 * allows the CRTC to be controlled. 428 */ 429 struct drm_crtc { 430 struct drm_device *dev; 431 struct device_node *port; 432 struct list_head head; 433 434 /* 435 * crtc mutex 436 * 437 * This provides a read lock for the overall crtc state (mode, dpms 438 * state, ...) and a write lock for everything which can be update 439 * without a full modeset (fb, cursor data, ...) 440 */ 441 struct drm_modeset_lock mutex; 442 443 struct drm_mode_object base; 444 445 /* primary and cursor planes for CRTC */ 446 struct drm_plane *primary; 447 struct drm_plane *cursor; 448 449 /* position of cursor plane on crtc */ 450 int cursor_x; 451 int cursor_y; 452 453 bool enabled; 454 455 /* Requested mode from modesetting. */ 456 struct drm_display_mode mode; 457 458 /* Programmed mode in hw, after adjustments for encoders, 459 * crtc, panel scaling etc. Needed for timestamping etc. 460 */ 461 struct drm_display_mode hwmode; 462 463 int x, y; 464 const struct drm_crtc_funcs *funcs; 465 466 /* CRTC gamma size for reporting to userspace */ 467 uint32_t gamma_size; 468 uint16_t *gamma_store; 469 470 /* if you are using the helper */ 471 const void *helper_private; 472 473 struct drm_object_properties properties; 474 475 struct drm_crtc_state *state; 476 477 /* 478 * For legacy crtc ioctls so that atomic drivers can get at the locking 479 * acquire context. 480 */ 481 struct drm_modeset_acquire_ctx *acquire_ctx; 482 }; 483 484 /** 485 * struct drm_connector_state - mutable connector state 486 * @connector: backpointer to the connector 487 * @crtc: CRTC to connect connector to, NULL if disabled 488 * @best_encoder: can be used by helpers and drivers to select the encoder 489 * @state: backpointer to global drm_atomic_state 490 */ 491 struct drm_connector_state { 492 struct drm_connector *connector; 493 494 struct drm_crtc *crtc; /* do not write directly, use drm_atomic_set_crtc_for_connector() */ 495 496 struct drm_encoder *best_encoder; 497 498 struct drm_atomic_state *state; 499 }; 500 501 /** 502 * struct drm_connector_funcs - control connectors on a given device 503 * @dpms: set power state 504 * @save: save connector state 505 * @restore: restore connector state 506 * @reset: reset connector after state has been invalidated (e.g. resume) 507 * @detect: is this connector active? 508 * @fill_modes: fill mode list for this connector 509 * @set_property: property for this connector may need an update 510 * @destroy: make object go away 511 * @force: notify the driver that the connector is forced on 512 * @atomic_duplicate_state: duplicate the atomic state for this connector 513 * @atomic_destroy_state: destroy an atomic state for this connector 514 * @atomic_set_property: set a property on an atomic state for this connector 515 * (do not call directly, use drm_atomic_connector_set_property()) 516 * @atomic_get_property: get a property on an atomic state for this connector 517 * (do not call directly, use drm_atomic_connector_get_property()) 518 * 519 * Each CRTC may have one or more connectors attached to it. The functions 520 * below allow the core DRM code to control connectors, enumerate available modes, 521 * etc. 522 */ 523 struct drm_connector_funcs { 524 int (*dpms)(struct drm_connector *connector, int mode); 525 void (*save)(struct drm_connector *connector); 526 void (*restore)(struct drm_connector *connector); 527 void (*reset)(struct drm_connector *connector); 528 529 /* Check to see if anything is attached to the connector. 530 * @force is set to false whilst polling, true when checking the 531 * connector due to user request. @force can be used by the driver 532 * to avoid expensive, destructive operations during automated 533 * probing. 534 */ 535 enum drm_connector_status (*detect)(struct drm_connector *connector, 536 bool force); 537 int (*fill_modes)(struct drm_connector *connector, uint32_t max_width, uint32_t max_height); 538 int (*set_property)(struct drm_connector *connector, struct drm_property *property, 539 uint64_t val); 540 void (*destroy)(struct drm_connector *connector); 541 void (*force)(struct drm_connector *connector); 542 543 /* atomic update handling */ 544 struct drm_connector_state *(*atomic_duplicate_state)(struct drm_connector *connector); 545 void (*atomic_destroy_state)(struct drm_connector *connector, 546 struct drm_connector_state *state); 547 int (*atomic_set_property)(struct drm_connector *connector, 548 struct drm_connector_state *state, 549 struct drm_property *property, 550 uint64_t val); 551 int (*atomic_get_property)(struct drm_connector *connector, 552 const struct drm_connector_state *state, 553 struct drm_property *property, 554 uint64_t *val); 555 }; 556 557 /** 558 * struct drm_encoder_funcs - encoder controls 559 * @reset: reset state (e.g. at init or resume time) 560 * @destroy: cleanup and free associated data 561 * 562 * Encoders sit between CRTCs and connectors. 563 */ 564 struct drm_encoder_funcs { 565 void (*reset)(struct drm_encoder *encoder); 566 void (*destroy)(struct drm_encoder *encoder); 567 }; 568 569 #define DRM_CONNECTOR_MAX_ENCODER 3 570 571 /** 572 * struct drm_encoder - central DRM encoder structure 573 * @dev: parent DRM device 574 * @head: list management 575 * @base: base KMS object 576 * @name: encoder name 577 * @encoder_type: one of the %DRM_MODE_ENCODER_<foo> types in drm_mode.h 578 * @possible_crtcs: bitmask of potential CRTC bindings 579 * @possible_clones: bitmask of potential sibling encoders for cloning 580 * @crtc: currently bound CRTC 581 * @bridge: bridge associated to the encoder 582 * @funcs: control functions 583 * @helper_private: mid-layer private data 584 * 585 * CRTCs drive pixels to encoders, which convert them into signals 586 * appropriate for a given connector or set of connectors. 587 */ 588 struct drm_encoder { 589 struct drm_device *dev; 590 struct list_head head; 591 592 struct drm_mode_object base; 593 char *name; 594 int encoder_type; 595 uint32_t possible_crtcs; 596 uint32_t possible_clones; 597 598 struct drm_crtc *crtc; 599 struct drm_bridge *bridge; 600 const struct drm_encoder_funcs *funcs; 601 const void *helper_private; 602 }; 603 604 /* should we poll this connector for connects and disconnects */ 605 /* hot plug detectable */ 606 #define DRM_CONNECTOR_POLL_HPD (1 << 0) 607 /* poll for connections */ 608 #define DRM_CONNECTOR_POLL_CONNECT (1 << 1) 609 /* can cleanly poll for disconnections without flickering the screen */ 610 /* DACs should rarely do this without a lot of testing */ 611 #define DRM_CONNECTOR_POLL_DISCONNECT (1 << 2) 612 613 #define MAX_ELD_BYTES 128 614 615 /** 616 * struct drm_connector - central DRM connector control structure 617 * @dev: parent DRM device 618 * @kdev: kernel device for sysfs attributes 619 * @attr: sysfs attributes 620 * @head: list management 621 * @base: base KMS object 622 * @name: connector name 623 * @connector_type: one of the %DRM_MODE_CONNECTOR_<foo> types from drm_mode.h 624 * @connector_type_id: index into connector type enum 625 * @interlace_allowed: can this connector handle interlaced modes? 626 * @doublescan_allowed: can this connector handle doublescan? 627 * @stereo_allowed: can this connector handle stereo modes? 628 * @modes: modes available on this connector (from fill_modes() + user) 629 * @status: one of the drm_connector_status enums (connected, not, or unknown) 630 * @probed_modes: list of modes derived directly from the display 631 * @display_info: information about attached display (e.g. from EDID) 632 * @funcs: connector control functions 633 * @edid_blob_ptr: DRM property containing EDID if present 634 * @properties: property tracking for this connector 635 * @path_blob_ptr: DRM blob property data for the DP MST path property 636 * @polled: a %DRM_CONNECTOR_POLL_<foo> value for core driven polling 637 * @dpms: current dpms state 638 * @helper_private: mid-layer private data 639 * @cmdline_mode: mode line parsed from the kernel cmdline for this connector 640 * @force: a %DRM_FORCE_<foo> state for forced mode sets 641 * @override_edid: has the EDID been overwritten through debugfs for testing? 642 * @encoder_ids: valid encoders for this connector 643 * @encoder: encoder driving this connector, if any 644 * @physical_address: HDMI physical address 645 * @eld: EDID-like data, if present 646 * @dvi_dual: dual link DVI, if found 647 * @max_tmds_clock: max clock rate, if found 648 * @latency_present: AV delay info from ELD, if found 649 * @video_latency: video latency info from ELD, if found 650 * @audio_latency: audio latency info from ELD, if found 651 * @null_edid_counter: track sinks that give us all zeros for the EDID 652 * @bad_edid_counter: track sinks that give us an EDID with invalid checksum 653 * @edid_corrupt: indicates whether the last read EDID was corrupt 654 * @debugfs_entry: debugfs directory for this connector 655 * @state: current atomic state for this connector 656 * @has_tile: is this connector connected to a tiled monitor 657 * @tile_group: tile group for the connected monitor 658 * @tile_is_single_monitor: whether the tile is one monitor housing 659 * @num_h_tile: number of horizontal tiles in the tile group 660 * @num_v_tile: number of vertical tiles in the tile group 661 * @tile_h_loc: horizontal location of this tile 662 * @tile_v_loc: vertical location of this tile 663 * @tile_h_size: horizontal size of this tile. 664 * @tile_v_size: vertical size of this tile. 665 * 666 * Each connector may be connected to one or more CRTCs, or may be clonable by 667 * another connector if they can share a CRTC. Each connector also has a specific 668 * position in the broader display (referred to as a 'screen' though it could 669 * span multiple monitors). 670 */ 671 struct drm_connector { 672 struct drm_device *dev; 673 struct device *kdev; 674 struct device_attribute *attr; 675 struct list_head head; 676 677 struct drm_mode_object base; 678 679 char *name; 680 int connector_type; 681 int connector_type_id; 682 bool interlace_allowed; 683 bool doublescan_allowed; 684 bool stereo_allowed; 685 struct list_head modes; /* list of modes on this connector */ 686 687 enum drm_connector_status status; 688 689 /* these are modes added by probing with DDC or the BIOS */ 690 struct list_head probed_modes; 691 692 struct drm_display_info display_info; 693 const struct drm_connector_funcs *funcs; 694 695 struct drm_property_blob *edid_blob_ptr; 696 struct drm_object_properties properties; 697 698 struct drm_property_blob *path_blob_ptr; 699 700 struct drm_property_blob *tile_blob_ptr; 701 702 uint8_t polled; /* DRM_CONNECTOR_POLL_* */ 703 704 /* requested DPMS state */ 705 int dpms; 706 707 const void *helper_private; 708 709 /* forced on connector */ 710 struct drm_cmdline_mode cmdline_mode; 711 enum drm_connector_force force; 712 bool override_edid; 713 uint32_t encoder_ids[DRM_CONNECTOR_MAX_ENCODER]; 714 struct drm_encoder *encoder; /* currently active encoder */ 715 716 /* EDID bits */ 717 uint16_t physical_address; 718 uint8_t eld[MAX_ELD_BYTES]; 719 bool dvi_dual; 720 int max_tmds_clock; /* in MHz */ 721 bool latency_present[2]; 722 int video_latency[2]; /* [0]: progressive, [1]: interlaced */ 723 int audio_latency[2]; 724 int null_edid_counter; /* needed to workaround some HW bugs where we get all 0s */ 725 unsigned bad_edid_counter; 726 727 /* Flag for raw EDID header corruption - used in Displayport 728 * compliance testing - * Displayport Link CTS Core 1.2 rev1.1 4.2.2.6 729 */ 730 bool edid_corrupt; 731 732 struct dentry *debugfs_entry; 733 734 struct drm_connector_state *state; 735 736 /* DisplayID bits */ 737 bool has_tile; 738 struct drm_tile_group *tile_group; 739 bool tile_is_single_monitor; 740 741 uint8_t num_h_tile, num_v_tile; 742 uint8_t tile_h_loc, tile_v_loc; 743 uint16_t tile_h_size, tile_v_size; 744 }; 745 746 /** 747 * struct drm_plane_state - mutable plane state 748 * @plane: backpointer to the plane 749 * @crtc: currently bound CRTC, NULL if disabled 750 * @fb: currently bound framebuffer 751 * @fence: optional fence to wait for before scanning out @fb 752 * @crtc_x: left position of visible portion of plane on crtc 753 * @crtc_y: upper position of visible portion of plane on crtc 754 * @crtc_w: width of visible portion of plane on crtc 755 * @crtc_h: height of visible portion of plane on crtc 756 * @src_x: left position of visible portion of plane within 757 * plane (in 16.16) 758 * @src_y: upper position of visible portion of plane within 759 * plane (in 16.16) 760 * @src_w: width of visible portion of plane (in 16.16) 761 * @src_h: height of visible portion of plane (in 16.16) 762 * @state: backpointer to global drm_atomic_state 763 */ 764 struct drm_plane_state { 765 struct drm_plane *plane; 766 767 struct drm_crtc *crtc; /* do not write directly, use drm_atomic_set_crtc_for_plane() */ 768 struct drm_framebuffer *fb; /* do not write directly, use drm_atomic_set_fb_for_plane() */ 769 struct fence *fence; 770 771 /* Signed dest location allows it to be partially off screen */ 772 int32_t crtc_x, crtc_y; 773 uint32_t crtc_w, crtc_h; 774 775 /* Source values are 16.16 fixed point */ 776 uint32_t src_x, src_y; 777 uint32_t src_h, src_w; 778 779 /* Plane rotation */ 780 unsigned int rotation; 781 782 struct drm_atomic_state *state; 783 }; 784 785 786 /** 787 * struct drm_plane_funcs - driver plane control functions 788 * @update_plane: update the plane configuration 789 * @disable_plane: shut down the plane 790 * @destroy: clean up plane resources 791 * @reset: reset plane after state has been invalidated (e.g. resume) 792 * @set_property: called when a property is changed 793 * @atomic_duplicate_state: duplicate the atomic state for this plane 794 * @atomic_destroy_state: destroy an atomic state for this plane 795 * @atomic_set_property: set a property on an atomic state for this plane 796 * (do not call directly, use drm_atomic_plane_set_property()) 797 * @atomic_get_property: get a property on an atomic state for this plane 798 * (do not call directly, use drm_atomic_plane_get_property()) 799 */ 800 struct drm_plane_funcs { 801 int (*update_plane)(struct drm_plane *plane, 802 struct drm_crtc *crtc, struct drm_framebuffer *fb, 803 int crtc_x, int crtc_y, 804 unsigned int crtc_w, unsigned int crtc_h, 805 uint32_t src_x, uint32_t src_y, 806 uint32_t src_w, uint32_t src_h); 807 int (*disable_plane)(struct drm_plane *plane); 808 void (*destroy)(struct drm_plane *plane); 809 void (*reset)(struct drm_plane *plane); 810 811 int (*set_property)(struct drm_plane *plane, 812 struct drm_property *property, uint64_t val); 813 814 /* atomic update handling */ 815 struct drm_plane_state *(*atomic_duplicate_state)(struct drm_plane *plane); 816 void (*atomic_destroy_state)(struct drm_plane *plane, 817 struct drm_plane_state *state); 818 int (*atomic_set_property)(struct drm_plane *plane, 819 struct drm_plane_state *state, 820 struct drm_property *property, 821 uint64_t val); 822 int (*atomic_get_property)(struct drm_plane *plane, 823 const struct drm_plane_state *state, 824 struct drm_property *property, 825 uint64_t *val); 826 }; 827 828 enum drm_plane_type { 829 DRM_PLANE_TYPE_OVERLAY, 830 DRM_PLANE_TYPE_PRIMARY, 831 DRM_PLANE_TYPE_CURSOR, 832 }; 833 834 /** 835 * struct drm_plane - central DRM plane control structure 836 * @dev: DRM device this plane belongs to 837 * @head: for list management 838 * @base: base mode object 839 * @possible_crtcs: pipes this plane can be bound to 840 * @format_types: array of formats supported by this plane 841 * @format_count: number of formats supported 842 * @format_default: driver hasn't supplied supported formats for the plane 843 * @crtc: currently bound CRTC 844 * @fb: currently bound fb 845 * @old_fb: Temporary tracking of the old fb while a modeset is ongoing. Used by 846 * drm_mode_set_config_internal() to implement correct refcounting. 847 * @funcs: helper functions 848 * @properties: property tracking for this plane 849 * @type: type of plane (overlay, primary, cursor) 850 * @state: current atomic state for this plane 851 */ 852 struct drm_plane { 853 struct drm_device *dev; 854 struct list_head head; 855 856 struct drm_modeset_lock mutex; 857 858 struct drm_mode_object base; 859 860 uint32_t possible_crtcs; 861 uint32_t *format_types; 862 unsigned int format_count; 863 bool format_default; 864 865 struct drm_crtc *crtc; 866 struct drm_framebuffer *fb; 867 868 struct drm_framebuffer *old_fb; 869 870 const struct drm_plane_funcs *funcs; 871 872 struct drm_object_properties properties; 873 874 enum drm_plane_type type; 875 876 const void *helper_private; 877 878 struct drm_plane_state *state; 879 }; 880 881 /** 882 * struct drm_bridge_funcs - drm_bridge control functions 883 * @attach: Called during drm_bridge_attach 884 * @mode_fixup: Try to fixup (or reject entirely) proposed mode for this bridge 885 * @disable: Called right before encoder prepare, disables the bridge 886 * @post_disable: Called right after encoder prepare, for lockstepped disable 887 * @mode_set: Set this mode to the bridge 888 * @pre_enable: Called right before encoder commit, for lockstepped commit 889 * @enable: Called right after encoder commit, enables the bridge 890 */ 891 struct drm_bridge_funcs { 892 int (*attach)(struct drm_bridge *bridge); 893 bool (*mode_fixup)(struct drm_bridge *bridge, 894 const struct drm_display_mode *mode, 895 struct drm_display_mode *adjusted_mode); 896 void (*disable)(struct drm_bridge *bridge); 897 void (*post_disable)(struct drm_bridge *bridge); 898 void (*mode_set)(struct drm_bridge *bridge, 899 struct drm_display_mode *mode, 900 struct drm_display_mode *adjusted_mode); 901 void (*pre_enable)(struct drm_bridge *bridge); 902 void (*enable)(struct drm_bridge *bridge); 903 }; 904 905 /** 906 * struct drm_bridge - central DRM bridge control structure 907 * @dev: DRM device this bridge belongs to 908 * @encoder: encoder to which this bridge is connected 909 * @next: the next bridge in the encoder chain 910 * @of_node: device node pointer to the bridge 911 * @list: to keep track of all added bridges 912 * @funcs: control functions 913 * @driver_private: pointer to the bridge driver's internal context 914 */ 915 struct drm_bridge { 916 struct drm_device *dev; 917 struct drm_encoder *encoder; 918 struct drm_bridge *next; 919 #ifdef CONFIG_OF 920 struct device_node *of_node; 921 #endif 922 struct list_head list; 923 924 const struct drm_bridge_funcs *funcs; 925 void *driver_private; 926 }; 927 928 /** 929 * struct drm_atomic_state - the global state object for atomic updates 930 * @dev: parent DRM device 931 * @allow_modeset: allow full modeset 932 * @legacy_cursor_update: hint to enforce legacy cursor ioctl semantics 933 * @planes: pointer to array of plane pointers 934 * @plane_states: pointer to array of plane states pointers 935 * @crtcs: pointer to array of CRTC pointers 936 * @crtc_states: pointer to array of CRTC states pointers 937 * @num_connector: size of the @connectors and @connector_states arrays 938 * @connectors: pointer to array of connector pointers 939 * @connector_states: pointer to array of connector states pointers 940 * @acquire_ctx: acquire context for this atomic modeset state update 941 */ 942 struct drm_atomic_state { 943 struct drm_device *dev; 944 bool allow_modeset : 1; 945 bool legacy_cursor_update : 1; 946 struct drm_plane **planes; 947 struct drm_plane_state **plane_states; 948 struct drm_crtc **crtcs; 949 struct drm_crtc_state **crtc_states; 950 int num_connector; 951 struct drm_connector **connectors; 952 struct drm_connector_state **connector_states; 953 954 struct drm_modeset_acquire_ctx *acquire_ctx; 955 }; 956 957 958 /** 959 * struct drm_mode_set - new values for a CRTC config change 960 * @fb: framebuffer to use for new config 961 * @crtc: CRTC whose configuration we're about to change 962 * @mode: mode timings to use 963 * @x: position of this CRTC relative to @fb 964 * @y: position of this CRTC relative to @fb 965 * @connectors: array of connectors to drive with this CRTC if possible 966 * @num_connectors: size of @connectors array 967 * 968 * Represents a single crtc the connectors that it drives with what mode 969 * and from which framebuffer it scans out from. 970 * 971 * This is used to set modes. 972 */ 973 struct drm_mode_set { 974 struct drm_framebuffer *fb; 975 struct drm_crtc *crtc; 976 struct drm_display_mode *mode; 977 978 uint32_t x; 979 uint32_t y; 980 981 struct drm_connector **connectors; 982 size_t num_connectors; 983 }; 984 985 /** 986 * struct drm_mode_config_funcs - basic driver provided mode setting functions 987 * @fb_create: create a new framebuffer object 988 * @output_poll_changed: function to handle output configuration changes 989 * @atomic_check: check whether a given atomic state update is possible 990 * @atomic_commit: commit an atomic state update previously verified with 991 * atomic_check() 992 * @atomic_state_alloc: allocate a new atomic state 993 * @atomic_state_clear: clear the atomic state 994 * @atomic_state_free: free the atomic state 995 * 996 * Some global (i.e. not per-CRTC, connector, etc) mode setting functions that 997 * involve drivers. 998 */ 999 struct drm_mode_config_funcs { 1000 struct drm_framebuffer *(*fb_create)(struct drm_device *dev, 1001 struct drm_file *file_priv, 1002 struct drm_mode_fb_cmd2 *mode_cmd); 1003 void (*output_poll_changed)(struct drm_device *dev); 1004 1005 int (*atomic_check)(struct drm_device *dev, 1006 struct drm_atomic_state *a); 1007 int (*atomic_commit)(struct drm_device *dev, 1008 struct drm_atomic_state *a, 1009 bool async); 1010 struct drm_atomic_state *(*atomic_state_alloc)(struct drm_device *dev); 1011 void (*atomic_state_clear)(struct drm_atomic_state *state); 1012 void (*atomic_state_free)(struct drm_atomic_state *state); 1013 }; 1014 1015 /** 1016 * struct drm_mode_config - Mode configuration control structure 1017 * @mutex: mutex protecting KMS related lists and structures 1018 * @connection_mutex: ww mutex protecting connector state and routing 1019 * @acquire_ctx: global implicit acquire context used by atomic drivers for 1020 * legacy ioctls 1021 * @idr_mutex: mutex for KMS ID allocation and management 1022 * @crtc_idr: main KMS ID tracking object 1023 * @fb_lock: mutex to protect fb state and lists 1024 * @num_fb: number of fbs available 1025 * @fb_list: list of framebuffers available 1026 * @num_connector: number of connectors on this device 1027 * @connector_list: list of connector objects 1028 * @num_encoder: number of encoders on this device 1029 * @encoder_list: list of encoder objects 1030 * @num_overlay_plane: number of overlay planes on this device 1031 * @num_total_plane: number of universal (i.e. with primary/curso) planes on this device 1032 * @plane_list: list of plane objects 1033 * @num_crtc: number of CRTCs on this device 1034 * @crtc_list: list of CRTC objects 1035 * @property_list: list of property objects 1036 * @min_width: minimum pixel width on this device 1037 * @min_height: minimum pixel height on this device 1038 * @max_width: maximum pixel width on this device 1039 * @max_height: maximum pixel height on this device 1040 * @funcs: core driver provided mode setting functions 1041 * @fb_base: base address of the framebuffer 1042 * @poll_enabled: track polling support for this device 1043 * @poll_running: track polling status for this device 1044 * @output_poll_work: delayed work for polling in process context 1045 * @property_blob_list: list of all the blob property objects 1046 * @blob_lock: mutex for blob property allocation and management 1047 * @*_property: core property tracking 1048 * @preferred_depth: preferred RBG pixel depth, used by fb helpers 1049 * @prefer_shadow: hint to userspace to prefer shadow-fb rendering 1050 * @async_page_flip: does this device support async flips on the primary plane? 1051 * @cursor_width: hint to userspace for max cursor width 1052 * @cursor_height: hint to userspace for max cursor height 1053 * 1054 * Core mode resource tracking structure. All CRTC, encoders, and connectors 1055 * enumerated by the driver are added here, as are global properties. Some 1056 * global restrictions are also here, e.g. dimension restrictions. 1057 */ 1058 struct drm_mode_config { 1059 struct mutex mutex; /* protects configuration (mode lists etc.) */ 1060 struct drm_modeset_lock connection_mutex; /* protects connector->encoder and encoder->crtc links */ 1061 struct drm_modeset_acquire_ctx *acquire_ctx; /* for legacy _lock_all() / _unlock_all() */ 1062 struct mutex idr_mutex; /* for IDR management */ 1063 struct idr crtc_idr; /* use this idr for all IDs, fb, crtc, connector, modes - just makes life easier */ 1064 struct idr tile_idr; /* use this idr for all IDs, fb, crtc, connector, modes - just makes life easier */ 1065 /* this is limited to one for now */ 1066 1067 struct mutex fb_lock; /* proctects global and per-file fb lists */ 1068 int num_fb; 1069 struct list_head fb_list; 1070 1071 int num_connector; 1072 struct list_head connector_list; 1073 int num_encoder; 1074 struct list_head encoder_list; 1075 1076 /* 1077 * Track # of overlay planes separately from # of total planes. By 1078 * default we only advertise overlay planes to userspace; if userspace 1079 * sets the "universal plane" capability bit, we'll go ahead and 1080 * expose all planes. 1081 */ 1082 int num_overlay_plane; 1083 int num_total_plane; 1084 struct list_head plane_list; 1085 1086 int num_crtc; 1087 struct list_head crtc_list; 1088 1089 struct list_head property_list; 1090 1091 int min_width, min_height; 1092 int max_width, max_height; 1093 const struct drm_mode_config_funcs *funcs; 1094 resource_size_t fb_base; 1095 1096 /* output poll support */ 1097 bool poll_enabled; 1098 bool poll_running; 1099 bool delayed_event; 1100 struct delayed_work output_poll_work; 1101 1102 struct mutex blob_lock; 1103 1104 /* pointers to standard properties */ 1105 struct list_head property_blob_list; 1106 struct drm_property *edid_property; 1107 struct drm_property *dpms_property; 1108 struct drm_property *path_property; 1109 struct drm_property *tile_property; 1110 struct drm_property *plane_type_property; 1111 struct drm_property *rotation_property; 1112 struct drm_property *prop_src_x; 1113 struct drm_property *prop_src_y; 1114 struct drm_property *prop_src_w; 1115 struct drm_property *prop_src_h; 1116 struct drm_property *prop_crtc_x; 1117 struct drm_property *prop_crtc_y; 1118 struct drm_property *prop_crtc_w; 1119 struct drm_property *prop_crtc_h; 1120 struct drm_property *prop_fb_id; 1121 struct drm_property *prop_crtc_id; 1122 struct drm_property *prop_active; 1123 struct drm_property *prop_mode_id; 1124 1125 /* DVI-I properties */ 1126 struct drm_property *dvi_i_subconnector_property; 1127 struct drm_property *dvi_i_select_subconnector_property; 1128 1129 /* TV properties */ 1130 struct drm_property *tv_subconnector_property; 1131 struct drm_property *tv_select_subconnector_property; 1132 struct drm_property *tv_mode_property; 1133 struct drm_property *tv_left_margin_property; 1134 struct drm_property *tv_right_margin_property; 1135 struct drm_property *tv_top_margin_property; 1136 struct drm_property *tv_bottom_margin_property; 1137 struct drm_property *tv_brightness_property; 1138 struct drm_property *tv_contrast_property; 1139 struct drm_property *tv_flicker_reduction_property; 1140 struct drm_property *tv_overscan_property; 1141 struct drm_property *tv_saturation_property; 1142 struct drm_property *tv_hue_property; 1143 1144 /* Optional properties */ 1145 struct drm_property *scaling_mode_property; 1146 struct drm_property *aspect_ratio_property; 1147 struct drm_property *dirty_info_property; 1148 1149 /* properties for virtual machine layout */ 1150 struct drm_property *suggested_x_property; 1151 struct drm_property *suggested_y_property; 1152 1153 /* dumb ioctl parameters */ 1154 uint32_t preferred_depth, prefer_shadow; 1155 1156 /* whether async page flip is supported or not */ 1157 bool async_page_flip; 1158 1159 /* whether the driver supports fb modifiers */ 1160 bool allow_fb_modifiers; 1161 1162 /* cursor size */ 1163 uint32_t cursor_width, cursor_height; 1164 }; 1165 1166 /** 1167 * drm_for_each_plane_mask - iterate over planes specified by bitmask 1168 * @plane: the loop cursor 1169 * @dev: the DRM device 1170 * @plane_mask: bitmask of plane indices 1171 * 1172 * Iterate over all planes specified by bitmask. 1173 */ 1174 #define drm_for_each_plane_mask(plane, dev, plane_mask) \ 1175 list_for_each_entry((plane), &(dev)->mode_config.plane_list, head) \ 1176 if ((plane_mask) & (1 << drm_plane_index(plane))) 1177 1178 1179 #define obj_to_crtc(x) container_of(x, struct drm_crtc, base) 1180 #define obj_to_connector(x) container_of(x, struct drm_connector, base) 1181 #define obj_to_encoder(x) container_of(x, struct drm_encoder, base) 1182 #define obj_to_mode(x) container_of(x, struct drm_display_mode, base) 1183 #define obj_to_fb(x) container_of(x, struct drm_framebuffer, base) 1184 #define obj_to_property(x) container_of(x, struct drm_property, base) 1185 #define obj_to_blob(x) container_of(x, struct drm_property_blob, base) 1186 #define obj_to_plane(x) container_of(x, struct drm_plane, base) 1187 1188 struct drm_prop_enum_list { 1189 int type; 1190 const char *name; 1191 }; 1192 1193 extern int drm_crtc_init_with_planes(struct drm_device *dev, 1194 struct drm_crtc *crtc, 1195 struct drm_plane *primary, 1196 struct drm_plane *cursor, 1197 const struct drm_crtc_funcs *funcs); 1198 extern void drm_crtc_cleanup(struct drm_crtc *crtc); 1199 extern unsigned int drm_crtc_index(struct drm_crtc *crtc); 1200 1201 /** 1202 * drm_crtc_mask - find the mask of a registered CRTC 1203 * @crtc: CRTC to find mask for 1204 * 1205 * Given a registered CRTC, return the mask bit of that CRTC for an 1206 * encoder's possible_crtcs field. 1207 */ 1208 static inline uint32_t drm_crtc_mask(struct drm_crtc *crtc) 1209 { 1210 return 1 << drm_crtc_index(crtc); 1211 } 1212 1213 extern void drm_connector_ida_init(void); 1214 extern void drm_connector_ida_destroy(void); 1215 extern int drm_connector_init(struct drm_device *dev, 1216 struct drm_connector *connector, 1217 const struct drm_connector_funcs *funcs, 1218 int connector_type); 1219 int drm_connector_register(struct drm_connector *connector); 1220 void drm_connector_unregister(struct drm_connector *connector); 1221 1222 extern void drm_connector_cleanup(struct drm_connector *connector); 1223 extern unsigned int drm_connector_index(struct drm_connector *connector); 1224 /* helper to unplug all connectors from sysfs for device */ 1225 extern void drm_connector_unplug_all(struct drm_device *dev); 1226 1227 extern int drm_bridge_add(struct drm_bridge *bridge); 1228 extern void drm_bridge_remove(struct drm_bridge *bridge); 1229 extern struct drm_bridge *of_drm_find_bridge(struct device_node *np); 1230 extern int drm_bridge_attach(struct drm_device *dev, struct drm_bridge *bridge); 1231 1232 bool drm_bridge_mode_fixup(struct drm_bridge *bridge, 1233 const struct drm_display_mode *mode, 1234 struct drm_display_mode *adjusted_mode); 1235 void drm_bridge_disable(struct drm_bridge *bridge); 1236 void drm_bridge_post_disable(struct drm_bridge *bridge); 1237 void drm_bridge_mode_set(struct drm_bridge *bridge, 1238 struct drm_display_mode *mode, 1239 struct drm_display_mode *adjusted_mode); 1240 void drm_bridge_pre_enable(struct drm_bridge *bridge); 1241 void drm_bridge_enable(struct drm_bridge *bridge); 1242 1243 extern int drm_encoder_init(struct drm_device *dev, 1244 struct drm_encoder *encoder, 1245 const struct drm_encoder_funcs *funcs, 1246 int encoder_type); 1247 1248 /** 1249 * drm_encoder_crtc_ok - can a given crtc drive a given encoder? 1250 * @encoder: encoder to test 1251 * @crtc: crtc to test 1252 * 1253 * Return false if @encoder can't be driven by @crtc, true otherwise. 1254 */ 1255 static inline bool drm_encoder_crtc_ok(struct drm_encoder *encoder, 1256 struct drm_crtc *crtc) 1257 { 1258 return !!(encoder->possible_crtcs & drm_crtc_mask(crtc)); 1259 } 1260 1261 extern int drm_universal_plane_init(struct drm_device *dev, 1262 struct drm_plane *plane, 1263 unsigned long possible_crtcs, 1264 const struct drm_plane_funcs *funcs, 1265 const uint32_t *formats, 1266 unsigned int format_count, 1267 enum drm_plane_type type); 1268 extern int drm_plane_init(struct drm_device *dev, 1269 struct drm_plane *plane, 1270 unsigned long possible_crtcs, 1271 const struct drm_plane_funcs *funcs, 1272 const uint32_t *formats, unsigned int format_count, 1273 bool is_primary); 1274 extern void drm_plane_cleanup(struct drm_plane *plane); 1275 extern unsigned int drm_plane_index(struct drm_plane *plane); 1276 extern struct drm_plane * drm_plane_from_index(struct drm_device *dev, int idx); 1277 extern void drm_plane_force_disable(struct drm_plane *plane); 1278 extern int drm_plane_check_pixel_format(const struct drm_plane *plane, 1279 u32 format); 1280 extern void drm_crtc_get_hv_timing(const struct drm_display_mode *mode, 1281 int *hdisplay, int *vdisplay); 1282 extern int drm_crtc_check_viewport(const struct drm_crtc *crtc, 1283 int x, int y, 1284 const struct drm_display_mode *mode, 1285 const struct drm_framebuffer *fb); 1286 1287 extern void drm_encoder_cleanup(struct drm_encoder *encoder); 1288 1289 extern const char *drm_get_connector_status_name(enum drm_connector_status status); 1290 extern const char *drm_get_subpixel_order_name(enum subpixel_order order); 1291 extern const char *drm_get_dpms_name(int val); 1292 extern const char *drm_get_dvi_i_subconnector_name(int val); 1293 extern const char *drm_get_dvi_i_select_name(int val); 1294 extern const char *drm_get_tv_subconnector_name(int val); 1295 extern const char *drm_get_tv_select_name(int val); 1296 extern void drm_fb_release(struct drm_file *file_priv); 1297 extern void drm_property_destroy_user_blobs(struct drm_device *dev, 1298 struct drm_file *file_priv); 1299 extern bool drm_probe_ddc(struct i2c_adapter *adapter); 1300 extern struct edid *drm_get_edid(struct drm_connector *connector, 1301 struct i2c_adapter *adapter); 1302 extern struct edid *drm_edid_duplicate(const struct edid *edid); 1303 extern int drm_add_edid_modes(struct drm_connector *connector, struct edid *edid); 1304 extern void drm_mode_config_init(struct drm_device *dev); 1305 extern void drm_mode_config_reset(struct drm_device *dev); 1306 extern void drm_mode_config_cleanup(struct drm_device *dev); 1307 1308 extern int drm_mode_connector_set_path_property(struct drm_connector *connector, 1309 const char *path); 1310 int drm_mode_connector_set_tile_property(struct drm_connector *connector); 1311 extern int drm_mode_connector_update_edid_property(struct drm_connector *connector, 1312 const struct edid *edid); 1313 1314 extern int drm_display_info_set_bus_formats(struct drm_display_info *info, 1315 const u32 *formats, 1316 unsigned int num_formats); 1317 1318 static inline bool drm_property_type_is(struct drm_property *property, 1319 uint32_t type) 1320 { 1321 /* instanceof for props.. handles extended type vs original types: */ 1322 if (property->flags & DRM_MODE_PROP_EXTENDED_TYPE) 1323 return (property->flags & DRM_MODE_PROP_EXTENDED_TYPE) == type; 1324 return property->flags & type; 1325 } 1326 1327 static inline bool drm_property_type_valid(struct drm_property *property) 1328 { 1329 if (property->flags & DRM_MODE_PROP_EXTENDED_TYPE) 1330 return !(property->flags & DRM_MODE_PROP_LEGACY_TYPE); 1331 return !!(property->flags & DRM_MODE_PROP_LEGACY_TYPE); 1332 } 1333 1334 extern int drm_object_property_set_value(struct drm_mode_object *obj, 1335 struct drm_property *property, 1336 uint64_t val); 1337 extern int drm_object_property_get_value(struct drm_mode_object *obj, 1338 struct drm_property *property, 1339 uint64_t *value); 1340 extern int drm_framebuffer_init(struct drm_device *dev, 1341 struct drm_framebuffer *fb, 1342 const struct drm_framebuffer_funcs *funcs); 1343 extern struct drm_framebuffer *drm_framebuffer_lookup(struct drm_device *dev, 1344 uint32_t id); 1345 extern void drm_framebuffer_unreference(struct drm_framebuffer *fb); 1346 extern void drm_framebuffer_reference(struct drm_framebuffer *fb); 1347 extern void drm_framebuffer_remove(struct drm_framebuffer *fb); 1348 extern void drm_framebuffer_cleanup(struct drm_framebuffer *fb); 1349 extern void drm_framebuffer_unregister_private(struct drm_framebuffer *fb); 1350 1351 extern void drm_object_attach_property(struct drm_mode_object *obj, 1352 struct drm_property *property, 1353 uint64_t init_val); 1354 extern struct drm_property *drm_property_create(struct drm_device *dev, int flags, 1355 const char *name, int num_values); 1356 extern struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags, 1357 const char *name, 1358 const struct drm_prop_enum_list *props, 1359 int num_values); 1360 struct drm_property *drm_property_create_bitmask(struct drm_device *dev, 1361 int flags, const char *name, 1362 const struct drm_prop_enum_list *props, 1363 int num_props, 1364 uint64_t supported_bits); 1365 struct drm_property *drm_property_create_range(struct drm_device *dev, int flags, 1366 const char *name, 1367 uint64_t min, uint64_t max); 1368 struct drm_property *drm_property_create_signed_range(struct drm_device *dev, 1369 int flags, const char *name, 1370 int64_t min, int64_t max); 1371 struct drm_property *drm_property_create_object(struct drm_device *dev, 1372 int flags, const char *name, uint32_t type); 1373 struct drm_property *drm_property_create_bool(struct drm_device *dev, int flags, 1374 const char *name); 1375 struct drm_property_blob *drm_property_create_blob(struct drm_device *dev, 1376 size_t length, 1377 const void *data); 1378 struct drm_property_blob *drm_property_lookup_blob(struct drm_device *dev, 1379 uint32_t id); 1380 struct drm_property_blob *drm_property_reference_blob(struct drm_property_blob *blob); 1381 void drm_property_unreference_blob(struct drm_property_blob *blob); 1382 extern void drm_property_destroy(struct drm_device *dev, struct drm_property *property); 1383 extern int drm_property_add_enum(struct drm_property *property, int index, 1384 uint64_t value, const char *name); 1385 extern int drm_mode_create_dvi_i_properties(struct drm_device *dev); 1386 extern int drm_mode_create_tv_properties(struct drm_device *dev, 1387 unsigned int num_modes, 1388 const char * const modes[]); 1389 extern int drm_mode_create_scaling_mode_property(struct drm_device *dev); 1390 extern int drm_mode_create_aspect_ratio_property(struct drm_device *dev); 1391 extern int drm_mode_create_dirty_info_property(struct drm_device *dev); 1392 extern int drm_mode_create_suggested_offset_properties(struct drm_device *dev); 1393 extern bool drm_property_change_valid_get(struct drm_property *property, 1394 uint64_t value, struct drm_mode_object **ref); 1395 extern void drm_property_change_valid_put(struct drm_property *property, 1396 struct drm_mode_object *ref); 1397 1398 extern int drm_mode_connector_attach_encoder(struct drm_connector *connector, 1399 struct drm_encoder *encoder); 1400 extern int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc, 1401 int gamma_size); 1402 extern struct drm_mode_object *drm_mode_object_find(struct drm_device *dev, 1403 uint32_t id, uint32_t type); 1404 1405 /* IOCTLs */ 1406 extern int drm_mode_getresources(struct drm_device *dev, 1407 void *data, struct drm_file *file_priv); 1408 extern int drm_mode_getplane_res(struct drm_device *dev, void *data, 1409 struct drm_file *file_priv); 1410 extern int drm_mode_getcrtc(struct drm_device *dev, 1411 void *data, struct drm_file *file_priv); 1412 extern int drm_mode_getconnector(struct drm_device *dev, 1413 void *data, struct drm_file *file_priv); 1414 extern int drm_mode_set_config_internal(struct drm_mode_set *set); 1415 extern int drm_mode_setcrtc(struct drm_device *dev, 1416 void *data, struct drm_file *file_priv); 1417 extern int drm_mode_getplane(struct drm_device *dev, 1418 void *data, struct drm_file *file_priv); 1419 extern int drm_mode_setplane(struct drm_device *dev, 1420 void *data, struct drm_file *file_priv); 1421 extern int drm_mode_cursor_ioctl(struct drm_device *dev, 1422 void *data, struct drm_file *file_priv); 1423 extern int drm_mode_cursor2_ioctl(struct drm_device *dev, 1424 void *data, struct drm_file *file_priv); 1425 extern int drm_mode_addfb(struct drm_device *dev, 1426 void *data, struct drm_file *file_priv); 1427 extern int drm_mode_addfb2(struct drm_device *dev, 1428 void *data, struct drm_file *file_priv); 1429 extern uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth); 1430 extern int drm_mode_rmfb(struct drm_device *dev, 1431 void *data, struct drm_file *file_priv); 1432 extern int drm_mode_getfb(struct drm_device *dev, 1433 void *data, struct drm_file *file_priv); 1434 extern int drm_mode_dirtyfb_ioctl(struct drm_device *dev, 1435 void *data, struct drm_file *file_priv); 1436 1437 extern int drm_mode_getproperty_ioctl(struct drm_device *dev, 1438 void *data, struct drm_file *file_priv); 1439 extern int drm_mode_getblob_ioctl(struct drm_device *dev, 1440 void *data, struct drm_file *file_priv); 1441 extern int drm_mode_createblob_ioctl(struct drm_device *dev, 1442 void *data, struct drm_file *file_priv); 1443 extern int drm_mode_destroyblob_ioctl(struct drm_device *dev, 1444 void *data, struct drm_file *file_priv); 1445 extern int drm_mode_connector_property_set_ioctl(struct drm_device *dev, 1446 void *data, struct drm_file *file_priv); 1447 extern int drm_mode_getencoder(struct drm_device *dev, 1448 void *data, struct drm_file *file_priv); 1449 extern int drm_mode_gamma_get_ioctl(struct drm_device *dev, 1450 void *data, struct drm_file *file_priv); 1451 extern int drm_mode_gamma_set_ioctl(struct drm_device *dev, 1452 void *data, struct drm_file *file_priv); 1453 extern u8 drm_match_cea_mode(const struct drm_display_mode *to_match); 1454 extern enum hdmi_picture_aspect drm_get_cea_aspect_ratio(const u8 video_code); 1455 extern bool drm_detect_hdmi_monitor(struct edid *edid); 1456 extern bool drm_detect_monitor_audio(struct edid *edid); 1457 extern bool drm_rgb_quant_range_selectable(struct edid *edid); 1458 extern int drm_mode_page_flip_ioctl(struct drm_device *dev, 1459 void *data, struct drm_file *file_priv); 1460 extern int drm_add_modes_noedid(struct drm_connector *connector, 1461 int hdisplay, int vdisplay); 1462 extern void drm_set_preferred_mode(struct drm_connector *connector, 1463 int hpref, int vpref); 1464 1465 extern int drm_edid_header_is_valid(const u8 *raw_edid); 1466 extern bool drm_edid_block_valid(u8 *raw_edid, int block, bool print_bad_edid, 1467 bool *edid_corrupt); 1468 extern bool drm_edid_is_valid(struct edid *edid); 1469 1470 extern struct drm_tile_group *drm_mode_create_tile_group(struct drm_device *dev, 1471 char topology[8]); 1472 extern struct drm_tile_group *drm_mode_get_tile_group(struct drm_device *dev, 1473 char topology[8]); 1474 extern void drm_mode_put_tile_group(struct drm_device *dev, 1475 struct drm_tile_group *tg); 1476 struct drm_display_mode *drm_mode_find_dmt(struct drm_device *dev, 1477 int hsize, int vsize, int fresh, 1478 bool rb); 1479 1480 extern int drm_mode_create_dumb_ioctl(struct drm_device *dev, 1481 void *data, struct drm_file *file_priv); 1482 extern int drm_mode_mmap_dumb_ioctl(struct drm_device *dev, 1483 void *data, struct drm_file *file_priv); 1484 extern int drm_mode_destroy_dumb_ioctl(struct drm_device *dev, 1485 void *data, struct drm_file *file_priv); 1486 extern int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data, 1487 struct drm_file *file_priv); 1488 extern int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data, 1489 struct drm_file *file_priv); 1490 extern int drm_mode_plane_set_obj_prop(struct drm_plane *plane, 1491 struct drm_property *property, 1492 uint64_t value); 1493 extern int drm_mode_atomic_ioctl(struct drm_device *dev, 1494 void *data, struct drm_file *file_priv); 1495 1496 extern void drm_fb_get_bpp_depth(uint32_t format, unsigned int *depth, 1497 int *bpp); 1498 extern int drm_format_num_planes(uint32_t format); 1499 extern int drm_format_plane_cpp(uint32_t format, int plane); 1500 extern int drm_format_horz_chroma_subsampling(uint32_t format); 1501 extern int drm_format_vert_chroma_subsampling(uint32_t format); 1502 extern const char *drm_get_format_name(uint32_t format); 1503 extern struct drm_property *drm_mode_create_rotation_property(struct drm_device *dev, 1504 unsigned int supported_rotations); 1505 extern unsigned int drm_rotation_simplify(unsigned int rotation, 1506 unsigned int supported_rotations); 1507 1508 /* Helpers */ 1509 1510 static inline struct drm_plane *drm_plane_find(struct drm_device *dev, 1511 uint32_t id) 1512 { 1513 struct drm_mode_object *mo; 1514 mo = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_PLANE); 1515 return mo ? obj_to_plane(mo) : NULL; 1516 } 1517 1518 static inline struct drm_crtc *drm_crtc_find(struct drm_device *dev, 1519 uint32_t id) 1520 { 1521 struct drm_mode_object *mo; 1522 mo = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_CRTC); 1523 return mo ? obj_to_crtc(mo) : NULL; 1524 } 1525 1526 static inline struct drm_encoder *drm_encoder_find(struct drm_device *dev, 1527 uint32_t id) 1528 { 1529 struct drm_mode_object *mo; 1530 mo = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_ENCODER); 1531 return mo ? obj_to_encoder(mo) : NULL; 1532 } 1533 1534 static inline struct drm_connector *drm_connector_find(struct drm_device *dev, 1535 uint32_t id) 1536 { 1537 struct drm_mode_object *mo; 1538 mo = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_CONNECTOR); 1539 return mo ? obj_to_connector(mo) : NULL; 1540 } 1541 1542 static inline struct drm_property *drm_property_find(struct drm_device *dev, 1543 uint32_t id) 1544 { 1545 struct drm_mode_object *mo; 1546 mo = drm_mode_object_find(dev, id, DRM_MODE_OBJECT_PROPERTY); 1547 return mo ? obj_to_property(mo) : NULL; 1548 } 1549 1550 /* Plane list iterator for legacy (overlay only) planes. */ 1551 #define drm_for_each_legacy_plane(plane, dev) \ 1552 list_for_each_entry(plane, &(dev)->mode_config.plane_list, head) \ 1553 if (plane->type == DRM_PLANE_TYPE_OVERLAY) 1554 1555 #define drm_for_each_plane(plane, dev) \ 1556 list_for_each_entry(plane, &(dev)->mode_config.plane_list, head) 1557 1558 #define drm_for_each_crtc(crtc, dev) \ 1559 list_for_each_entry(crtc, &(dev)->mode_config.crtc_list, head) 1560 1561 static inline void 1562 assert_drm_connector_list_read_locked(struct drm_mode_config *mode_config) 1563 { 1564 /* 1565 * The connector hotadd/remove code currently grabs both locks when 1566 * updating lists. Hence readers need only hold either of them to be 1567 * safe and the check amounts to 1568 * 1569 * WARN_ON(not_holding(A) && not_holding(B)). 1570 */ 1571 WARN_ON(!mutex_is_locked(&mode_config->mutex) && 1572 !drm_modeset_is_locked(&mode_config->connection_mutex)); 1573 } 1574 1575 #define drm_for_each_connector(connector, dev) \ 1576 for (assert_drm_connector_list_read_locked(&(dev)->mode_config), \ 1577 connector = list_first_entry(&(dev)->mode_config.connector_list, \ 1578 struct drm_connector, head); \ 1579 &connector->head != (&(dev)->mode_config.connector_list); \ 1580 connector = list_next_entry(connector, head)) 1581 1582 #define drm_for_each_encoder(encoder, dev) \ 1583 list_for_each_entry(encoder, &(dev)->mode_config.encoder_list, head) 1584 1585 #define drm_for_each_fb(fb, dev) \ 1586 for (WARN_ON(!mutex_is_locked(&(dev)->mode_config.fb_lock)), \ 1587 fb = list_first_entry(&(dev)->mode_config.fb_list, \ 1588 struct drm_framebuffer, head); \ 1589 &fb->head != (&(dev)->mode_config.fb_list); \ 1590 fb = list_next_entry(fb, head)) 1591 1592 #endif /* __DRM_CRTC_H__ */ 1593
Indexes created Sun Oct 19 16:10:00 GMT 2025