1235783Skib/* 2235783Skib * Copyright (c) 2006-2008 Intel Corporation 3235783Skib * Copyright (c) 2007 Dave Airlie <airlied@linux.ie> 4235783Skib * 5235783Skib * DRM core CRTC related functions 6235783Skib * 7235783Skib * Permission to use, copy, modify, distribute, and sell this software and its 8235783Skib * documentation for any purpose is hereby granted without fee, provided that 9235783Skib * the above copyright notice appear in all copies and that both that copyright 10235783Skib * notice and this permission notice appear in supporting documentation, and 11235783Skib * that the name of the copyright holders not be used in advertising or 12235783Skib * publicity pertaining to distribution of the software without specific, 13235783Skib * written prior permission. The copyright holders make no representations 14235783Skib * about the suitability of this software for any purpose. It is provided "as 15235783Skib * is" without express or implied warranty. 16235783Skib * 17235783Skib * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, 18235783Skib * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO 19235783Skib * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR 20235783Skib * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, 21235783Skib * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER 22235783Skib * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE 23235783Skib * OF THIS SOFTWARE. 24235783Skib * 25235783Skib * Authors: 26235783Skib * Keith Packard 27235783Skib * Eric Anholt <eric@anholt.net> 28235783Skib * Dave Airlie <airlied@linux.ie> 29235783Skib * Jesse Barnes <jesse.barnes@intel.com> 30235783Skib */ 31235783Skib 32235783Skib#include <sys/cdefs.h> 33235783Skib__FBSDID("$FreeBSD: releng/10.2/sys/dev/drm2/drm_crtc_helper.c 282199 2015-04-28 19:35:05Z dumbbell $"); 34235783Skib 35235783Skib#include <dev/drm2/drmP.h> 36235783Skib#include <dev/drm2/drm_crtc.h> 37235783Skib#include <dev/drm2/drm_fourcc.h> 38235783Skib#include <dev/drm2/drm_crtc_helper.h> 39235783Skib#include <dev/drm2/drm_fb_helper.h> 40282199Sdumbbell#include <dev/drm2/drm_edid.h> 41235783Skib 42282199Sdumbbell/** 43282199Sdumbbell * drm_helper_move_panel_connectors_to_head() - move panels to the front in the 44282199Sdumbbell * connector list 45282199Sdumbbell * @dev: drm device to operate on 46282199Sdumbbell * 47282199Sdumbbell * Some userspace presumes that the first connected connector is the main 48282199Sdumbbell * display, where it's supposed to display e.g. the login screen. For 49282199Sdumbbell * laptops, this should be the main panel. Use this function to sort all 50282199Sdumbbell * (eDP/LVDS) panels to the front of the connector list, instead of 51282199Sdumbbell * painstakingly trying to initialize them in the right order. 52282199Sdumbbell */ 53282199Sdumbbellvoid drm_helper_move_panel_connectors_to_head(struct drm_device *dev) 54235783Skib{ 55282199Sdumbbell struct drm_connector *connector, *tmp; 56282199Sdumbbell struct list_head panel_list; 57235783Skib 58282199Sdumbbell INIT_LIST_HEAD(&panel_list); 59282199Sdumbbell 60282199Sdumbbell list_for_each_entry_safe(connector, tmp, 61282199Sdumbbell &dev->mode_config.connector_list, head) { 62282199Sdumbbell if (connector->connector_type == DRM_MODE_CONNECTOR_LVDS || 63282199Sdumbbell connector->connector_type == DRM_MODE_CONNECTOR_eDP) 64282199Sdumbbell list_move_tail(&connector->head, &panel_list); 65235783Skib } 66282199Sdumbbell 67282199Sdumbbell list_splice(&panel_list, &dev->mode_config.connector_list); 68235783Skib} 69282199SdumbbellEXPORT_SYMBOL(drm_helper_move_panel_connectors_to_head); 70235783Skib 71235783Skibstatic bool drm_kms_helper_poll = true; 72282199Sdumbbellmodule_param_named(poll, drm_kms_helper_poll, bool, 0600); 73235783Skib 74235783Skibstatic void drm_mode_validate_flag(struct drm_connector *connector, 75235783Skib int flags) 76235783Skib{ 77282199Sdumbbell struct drm_display_mode *mode; 78235783Skib 79235783Skib if (flags == (DRM_MODE_FLAG_DBLSCAN | DRM_MODE_FLAG_INTERLACE)) 80235783Skib return; 81235783Skib 82282199Sdumbbell list_for_each_entry(mode, &connector->modes, head) { 83235783Skib if ((mode->flags & DRM_MODE_FLAG_INTERLACE) && 84235783Skib !(flags & DRM_MODE_FLAG_INTERLACE)) 85235783Skib mode->status = MODE_NO_INTERLACE; 86235783Skib if ((mode->flags & DRM_MODE_FLAG_DBLSCAN) && 87235783Skib !(flags & DRM_MODE_FLAG_DBLSCAN)) 88235783Skib mode->status = MODE_NO_DBLESCAN; 89235783Skib } 90235783Skib 91235783Skib return; 92235783Skib} 93235783Skib 94235783Skib/** 95235783Skib * drm_helper_probe_single_connector_modes - get complete set of display modes 96282199Sdumbbell * @connector: connector to probe 97235783Skib * @maxX: max width for modes 98235783Skib * @maxY: max height for modes 99235783Skib * 100235783Skib * LOCKING: 101235783Skib * Caller must hold mode config lock. 102235783Skib * 103282199Sdumbbell * Based on the helper callbacks implemented by @connector try to detect all 104282199Sdumbbell * valid modes. Modes will first be added to the connector's probed_modes list, 105282199Sdumbbell * then culled (based on validity and the @maxX, @maxY parameters) and put into 106282199Sdumbbell * the normal modes list. 107235783Skib * 108282199Sdumbbell * Intended to be use as a generic implementation of the ->probe() @connector 109282199Sdumbbell * callback for drivers that use the crtc helpers for output mode filtering and 110282199Sdumbbell * detection. 111235783Skib * 112235783Skib * RETURNS: 113235783Skib * Number of modes found on @connector. 114235783Skib */ 115235783Skibint drm_helper_probe_single_connector_modes(struct drm_connector *connector, 116235783Skib uint32_t maxX, uint32_t maxY) 117235783Skib{ 118235783Skib struct drm_device *dev = connector->dev; 119282199Sdumbbell struct drm_display_mode *mode; 120235783Skib struct drm_connector_helper_funcs *connector_funcs = 121235783Skib connector->helper_private; 122235783Skib int count = 0; 123235783Skib int mode_flags = 0; 124235783Skib 125235783Skib DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", connector->base.id, 126235783Skib drm_get_connector_name(connector)); 127235783Skib /* set all modes to the unverified state */ 128282199Sdumbbell list_for_each_entry(mode, &connector->modes, head) 129235783Skib mode->status = MODE_UNVERIFIED; 130235783Skib 131235783Skib if (connector->force) { 132235783Skib if (connector->force == DRM_FORCE_ON) 133235783Skib connector->status = connector_status_connected; 134235783Skib else 135235783Skib connector->status = connector_status_disconnected; 136235783Skib if (connector->funcs->force) 137235783Skib connector->funcs->force(connector); 138235783Skib } else { 139235783Skib connector->status = connector->funcs->detect(connector, true); 140235783Skib } 141235783Skib 142282199Sdumbbell /* Re-enable polling in case the global poll config changed. */ 143282199Sdumbbell if (drm_kms_helper_poll != dev->mode_config.poll_running) 144282199Sdumbbell drm_kms_helper_poll_enable(dev); 145282199Sdumbbell 146282199Sdumbbell dev->mode_config.poll_running = drm_kms_helper_poll; 147282199Sdumbbell 148235783Skib if (connector->status == connector_status_disconnected) { 149235783Skib DRM_DEBUG_KMS("[CONNECTOR:%d:%s] disconnected\n", 150235783Skib connector->base.id, drm_get_connector_name(connector)); 151235783Skib drm_mode_connector_update_edid_property(connector, NULL); 152235783Skib goto prune; 153235783Skib } 154235783Skib 155282199Sdumbbell#ifdef FREEBSD_NOTYET 156282199Sdumbbell#ifdef CONFIG_DRM_LOAD_EDID_FIRMWARE 157282199Sdumbbell count = drm_load_edid_firmware(connector); 158282199Sdumbbell if (count == 0) 159282199Sdumbbell#endif 160282199Sdumbbell#endif /* FREEBSD_NOTYET */ 161282199Sdumbbell count = (*connector_funcs->get_modes)(connector); 162282199Sdumbbell 163235783Skib if (count == 0 && connector->status == connector_status_connected) 164235783Skib count = drm_add_modes_noedid(connector, 1024, 768); 165235783Skib if (count == 0) 166235783Skib goto prune; 167235783Skib 168235783Skib drm_mode_connector_list_update(connector); 169235783Skib 170235783Skib if (maxX && maxY) 171235783Skib drm_mode_validate_size(dev, &connector->modes, maxX, 172235783Skib maxY, 0); 173235783Skib 174235783Skib if (connector->interlace_allowed) 175235783Skib mode_flags |= DRM_MODE_FLAG_INTERLACE; 176235783Skib if (connector->doublescan_allowed) 177235783Skib mode_flags |= DRM_MODE_FLAG_DBLSCAN; 178235783Skib drm_mode_validate_flag(connector, mode_flags); 179235783Skib 180282199Sdumbbell list_for_each_entry(mode, &connector->modes, head) { 181235783Skib if (mode->status == MODE_OK) 182235783Skib mode->status = connector_funcs->mode_valid(connector, 183235783Skib mode); 184235783Skib } 185235783Skib 186235783Skibprune: 187235783Skib drm_mode_prune_invalid(dev, &connector->modes, true); 188235783Skib 189235783Skib if (list_empty(&connector->modes)) 190235783Skib return 0; 191235783Skib 192282199Sdumbbell list_for_each_entry(mode, &connector->modes, head) 193282199Sdumbbell mode->vrefresh = drm_mode_vrefresh(mode); 194282199Sdumbbell 195235783Skib drm_mode_sort(&connector->modes); 196235783Skib 197235783Skib DRM_DEBUG_KMS("[CONNECTOR:%d:%s] probed modes :\n", connector->base.id, 198235783Skib drm_get_connector_name(connector)); 199282199Sdumbbell list_for_each_entry(mode, &connector->modes, head) { 200235783Skib drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V); 201235783Skib drm_mode_debug_printmodeline(mode); 202235783Skib } 203235783Skib 204235783Skib return count; 205235783Skib} 206282199SdumbbellEXPORT_SYMBOL(drm_helper_probe_single_connector_modes); 207235783Skib 208235783Skib/** 209235783Skib * drm_helper_encoder_in_use - check if a given encoder is in use 210235783Skib * @encoder: encoder to check 211235783Skib * 212235783Skib * LOCKING: 213235783Skib * Caller must hold mode config lock. 214235783Skib * 215235783Skib * Walk @encoders's DRM device's mode_config and see if it's in use. 216235783Skib * 217235783Skib * RETURNS: 218235783Skib * True if @encoder is part of the mode_config, false otherwise. 219235783Skib */ 220235783Skibbool drm_helper_encoder_in_use(struct drm_encoder *encoder) 221235783Skib{ 222235783Skib struct drm_connector *connector; 223235783Skib struct drm_device *dev = encoder->dev; 224235783Skib list_for_each_entry(connector, &dev->mode_config.connector_list, head) 225235783Skib if (connector->encoder == encoder) 226235783Skib return true; 227235783Skib return false; 228235783Skib} 229282199SdumbbellEXPORT_SYMBOL(drm_helper_encoder_in_use); 230235783Skib 231235783Skib/** 232235783Skib * drm_helper_crtc_in_use - check if a given CRTC is in a mode_config 233235783Skib * @crtc: CRTC to check 234235783Skib * 235235783Skib * LOCKING: 236235783Skib * Caller must hold mode config lock. 237235783Skib * 238235783Skib * Walk @crtc's DRM device's mode_config and see if it's in use. 239235783Skib * 240235783Skib * RETURNS: 241235783Skib * True if @crtc is part of the mode_config, false otherwise. 242235783Skib */ 243235783Skibbool drm_helper_crtc_in_use(struct drm_crtc *crtc) 244235783Skib{ 245235783Skib struct drm_encoder *encoder; 246235783Skib struct drm_device *dev = crtc->dev; 247235783Skib /* FIXME: Locking around list access? */ 248235783Skib list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) 249235783Skib if (encoder->crtc == crtc && drm_helper_encoder_in_use(encoder)) 250235783Skib return true; 251235783Skib return false; 252235783Skib} 253282199SdumbbellEXPORT_SYMBOL(drm_helper_crtc_in_use); 254235783Skib 255235783Skibstatic void 256235783Skibdrm_encoder_disable(struct drm_encoder *encoder) 257235783Skib{ 258235783Skib struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private; 259235783Skib 260235783Skib if (encoder_funcs->disable) 261235783Skib (*encoder_funcs->disable)(encoder); 262235783Skib else 263235783Skib (*encoder_funcs->dpms)(encoder, DRM_MODE_DPMS_OFF); 264235783Skib} 265235783Skib 266235783Skib/** 267235783Skib * drm_helper_disable_unused_functions - disable unused objects 268235783Skib * @dev: DRM device 269235783Skib * 270235783Skib * LOCKING: 271235783Skib * Caller must hold mode config lock. 272235783Skib * 273235783Skib * If an connector or CRTC isn't part of @dev's mode_config, it can be disabled 274235783Skib * by calling its dpms function, which should power it off. 275235783Skib */ 276235783Skibvoid drm_helper_disable_unused_functions(struct drm_device *dev) 277235783Skib{ 278235783Skib struct drm_encoder *encoder; 279235783Skib struct drm_connector *connector; 280235783Skib struct drm_crtc *crtc; 281235783Skib 282235783Skib list_for_each_entry(connector, &dev->mode_config.connector_list, head) { 283235783Skib if (!connector->encoder) 284235783Skib continue; 285235783Skib if (connector->status == connector_status_disconnected) 286235783Skib connector->encoder = NULL; 287235783Skib } 288235783Skib 289235783Skib list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { 290235783Skib if (!drm_helper_encoder_in_use(encoder)) { 291235783Skib drm_encoder_disable(encoder); 292235783Skib /* disconnector encoder from any connector */ 293235783Skib encoder->crtc = NULL; 294235783Skib } 295235783Skib } 296235783Skib 297235783Skib list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { 298235783Skib struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; 299235783Skib crtc->enabled = drm_helper_crtc_in_use(crtc); 300235783Skib if (!crtc->enabled) { 301235783Skib if (crtc_funcs->disable) 302235783Skib (*crtc_funcs->disable)(crtc); 303235783Skib else 304235783Skib (*crtc_funcs->dpms)(crtc, DRM_MODE_DPMS_OFF); 305235783Skib crtc->fb = NULL; 306235783Skib } 307235783Skib } 308235783Skib} 309282199SdumbbellEXPORT_SYMBOL(drm_helper_disable_unused_functions); 310235783Skib 311235783Skib/** 312235783Skib * drm_encoder_crtc_ok - can a given crtc drive a given encoder? 313235783Skib * @encoder: encoder to test 314235783Skib * @crtc: crtc to test 315235783Skib * 316235783Skib * Return false if @encoder can't be driven by @crtc, true otherwise. 317235783Skib */ 318235783Skibstatic bool drm_encoder_crtc_ok(struct drm_encoder *encoder, 319235783Skib struct drm_crtc *crtc) 320235783Skib{ 321235783Skib struct drm_device *dev; 322235783Skib struct drm_crtc *tmp; 323235783Skib int crtc_mask = 1; 324235783Skib 325235783Skib if (crtc == NULL) 326235783Skib printf("checking null crtc?\n"); 327235783Skib 328235783Skib dev = crtc->dev; 329235783Skib 330235783Skib list_for_each_entry(tmp, &dev->mode_config.crtc_list, head) { 331235783Skib if (tmp == crtc) 332235783Skib break; 333235783Skib crtc_mask <<= 1; 334235783Skib } 335235783Skib 336235783Skib if (encoder->possible_crtcs & crtc_mask) 337235783Skib return true; 338235783Skib return false; 339235783Skib} 340235783Skib 341235783Skib/* 342235783Skib * Check the CRTC we're going to map each output to vs. its current 343235783Skib * CRTC. If they don't match, we have to disable the output and the CRTC 344235783Skib * since the driver will have to re-route things. 345235783Skib */ 346235783Skibstatic void 347235783Skibdrm_crtc_prepare_encoders(struct drm_device *dev) 348235783Skib{ 349235783Skib struct drm_encoder_helper_funcs *encoder_funcs; 350235783Skib struct drm_encoder *encoder; 351235783Skib 352235783Skib list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { 353235783Skib encoder_funcs = encoder->helper_private; 354235783Skib /* Disable unused encoders */ 355235783Skib if (encoder->crtc == NULL) 356235783Skib drm_encoder_disable(encoder); 357235783Skib /* Disable encoders whose CRTC is about to change */ 358235783Skib if (encoder_funcs->get_crtc && 359235783Skib encoder->crtc != (*encoder_funcs->get_crtc)(encoder)) 360235783Skib drm_encoder_disable(encoder); 361235783Skib } 362235783Skib} 363235783Skib 364235783Skib/** 365282199Sdumbbell * drm_crtc_helper_set_mode - internal helper to set a mode 366235783Skib * @crtc: CRTC to program 367235783Skib * @mode: mode to use 368282199Sdumbbell * @x: horizontal offset into the surface 369282199Sdumbbell * @y: vertical offset into the surface 370282199Sdumbbell * @old_fb: old framebuffer, for cleanup 371235783Skib * 372235783Skib * LOCKING: 373235783Skib * Caller must hold mode config lock. 374235783Skib * 375235783Skib * Try to set @mode on @crtc. Give @crtc and its associated connectors a chance 376282199Sdumbbell * to fixup or reject the mode prior to trying to set it. This is an internal 377282199Sdumbbell * helper that drivers could e.g. use to update properties that require the 378282199Sdumbbell * entire output pipe to be disabled and re-enabled in a new configuration. For 379282199Sdumbbell * example for changing whether audio is enabled on a hdmi link or for changing 380282199Sdumbbell * panel fitter or dither attributes. It is also called by the 381282199Sdumbbell * drm_crtc_helper_set_config() helper function to drive the mode setting 382282199Sdumbbell * sequence. 383235783Skib * 384235783Skib * RETURNS: 385235783Skib * True if the mode was set successfully, or false otherwise. 386235783Skib */ 387235783Skibbool drm_crtc_helper_set_mode(struct drm_crtc *crtc, 388235783Skib struct drm_display_mode *mode, 389235783Skib int x, int y, 390235783Skib struct drm_framebuffer *old_fb) 391235783Skib{ 392235783Skib struct drm_device *dev = crtc->dev; 393235783Skib struct drm_display_mode *adjusted_mode, saved_mode, saved_hwmode; 394235783Skib struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; 395235783Skib struct drm_encoder_helper_funcs *encoder_funcs; 396235783Skib int saved_x, saved_y; 397235783Skib struct drm_encoder *encoder; 398235783Skib bool ret = true; 399235783Skib 400235783Skib crtc->enabled = drm_helper_crtc_in_use(crtc); 401235783Skib if (!crtc->enabled) 402235783Skib return true; 403235783Skib 404235783Skib adjusted_mode = drm_mode_duplicate(dev, mode); 405235783Skib if (!adjusted_mode) 406235783Skib return false; 407235783Skib 408235783Skib saved_hwmode = crtc->hwmode; 409235783Skib saved_mode = crtc->mode; 410235783Skib saved_x = crtc->x; 411235783Skib saved_y = crtc->y; 412235783Skib 413235783Skib /* Update crtc values up front so the driver can rely on them for mode 414235783Skib * setting. 415235783Skib */ 416235783Skib crtc->mode = *mode; 417235783Skib crtc->x = x; 418235783Skib crtc->y = y; 419235783Skib 420235783Skib /* Pass our mode to the connectors and the CRTC to give them a chance to 421235783Skib * adjust it according to limitations or connector properties, and also 422235783Skib * a chance to reject the mode entirely. 423235783Skib */ 424235783Skib list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { 425235783Skib 426235783Skib if (encoder->crtc != crtc) 427235783Skib continue; 428235783Skib encoder_funcs = encoder->helper_private; 429235783Skib if (!(ret = encoder_funcs->mode_fixup(encoder, mode, 430235783Skib adjusted_mode))) { 431282199Sdumbbell DRM_DEBUG_KMS("Encoder fixup failed\n"); 432235783Skib goto done; 433235783Skib } 434235783Skib } 435235783Skib 436235783Skib if (!(ret = crtc_funcs->mode_fixup(crtc, mode, adjusted_mode))) { 437282199Sdumbbell DRM_DEBUG_KMS("CRTC fixup failed\n"); 438235783Skib goto done; 439235783Skib } 440235783Skib DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id); 441235783Skib 442235783Skib /* Prepare the encoders and CRTCs before setting the mode. */ 443235783Skib list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { 444235783Skib 445235783Skib if (encoder->crtc != crtc) 446235783Skib continue; 447235783Skib encoder_funcs = encoder->helper_private; 448235783Skib /* Disable the encoders as the first thing we do. */ 449235783Skib encoder_funcs->prepare(encoder); 450235783Skib } 451235783Skib 452235783Skib drm_crtc_prepare_encoders(dev); 453235783Skib 454235783Skib crtc_funcs->prepare(crtc); 455235783Skib 456235783Skib /* Set up the DPLL and any encoders state that needs to adjust or depend 457235783Skib * on the DPLL. 458235783Skib */ 459235783Skib ret = !crtc_funcs->mode_set(crtc, mode, adjusted_mode, x, y, old_fb); 460235783Skib if (!ret) 461235783Skib goto done; 462235783Skib 463235783Skib list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { 464235783Skib 465235783Skib if (encoder->crtc != crtc) 466235783Skib continue; 467235783Skib 468235783Skib DRM_DEBUG_KMS("[ENCODER:%d:%s] set [MODE:%d:%s]\n", 469235783Skib encoder->base.id, drm_get_encoder_name(encoder), 470235783Skib mode->base.id, mode->name); 471235783Skib encoder_funcs = encoder->helper_private; 472235783Skib encoder_funcs->mode_set(encoder, mode, adjusted_mode); 473235783Skib } 474235783Skib 475235783Skib /* Now enable the clocks, plane, pipe, and connectors that we set up. */ 476235783Skib crtc_funcs->commit(crtc); 477235783Skib 478235783Skib list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { 479235783Skib 480235783Skib if (encoder->crtc != crtc) 481235783Skib continue; 482235783Skib 483235783Skib encoder_funcs = encoder->helper_private; 484235783Skib encoder_funcs->commit(encoder); 485235783Skib 486235783Skib } 487235783Skib 488235783Skib /* Store real post-adjustment hardware mode. */ 489235783Skib crtc->hwmode = *adjusted_mode; 490235783Skib 491235783Skib /* Calculate and store various constants which 492235783Skib * are later needed by vblank and swap-completion 493235783Skib * timestamping. They are derived from true hwmode. 494235783Skib */ 495235783Skib drm_calc_timestamping_constants(crtc); 496235783Skib 497235783Skib /* FIXME: add subpixel order */ 498235783Skibdone: 499235783Skib drm_mode_destroy(dev, adjusted_mode); 500235783Skib if (!ret) { 501235783Skib crtc->hwmode = saved_hwmode; 502235783Skib crtc->mode = saved_mode; 503235783Skib crtc->x = saved_x; 504235783Skib crtc->y = saved_y; 505235783Skib } 506235783Skib 507235783Skib return ret; 508235783Skib} 509282199SdumbbellEXPORT_SYMBOL(drm_crtc_helper_set_mode); 510235783Skib 511282199Sdumbbell 512235783Skibstatic int 513235783Skibdrm_crtc_helper_disable(struct drm_crtc *crtc) 514235783Skib{ 515235783Skib struct drm_device *dev = crtc->dev; 516235783Skib struct drm_connector *connector; 517235783Skib struct drm_encoder *encoder; 518235783Skib 519235783Skib /* Decouple all encoders and their attached connectors from this crtc */ 520235783Skib list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { 521235783Skib if (encoder->crtc != crtc) 522235783Skib continue; 523235783Skib 524235783Skib list_for_each_entry(connector, &dev->mode_config.connector_list, head) { 525235783Skib if (connector->encoder != encoder) 526235783Skib continue; 527235783Skib 528235783Skib connector->encoder = NULL; 529235783Skib } 530235783Skib } 531235783Skib 532235783Skib drm_helper_disable_unused_functions(dev); 533235783Skib return 0; 534235783Skib} 535235783Skib 536235783Skib/** 537235783Skib * drm_crtc_helper_set_config - set a new config from userspace 538282199Sdumbbell * @set: mode set configuration 539235783Skib * 540235783Skib * LOCKING: 541235783Skib * Caller must hold mode config lock. 542235783Skib * 543282199Sdumbbell * Setup a new configuration, provided by the upper layers (either an ioctl call 544282199Sdumbbell * from userspace or internally e.g. from the fbdev suppport code) in @set, and 545282199Sdumbbell * enable it. This is the main helper functions for drivers that implement 546282199Sdumbbell * kernel mode setting with the crtc helper functions and the assorted 547282199Sdumbbell * ->prepare(), ->modeset() and ->commit() helper callbacks. 548235783Skib * 549235783Skib * RETURNS: 550282199Sdumbbell * Returns 0 on success, -ERRNO on failure. 551235783Skib */ 552235783Skibint drm_crtc_helper_set_config(struct drm_mode_set *set) 553235783Skib{ 554235783Skib struct drm_device *dev; 555235783Skib struct drm_crtc *save_crtcs, *new_crtc, *crtc; 556235783Skib struct drm_encoder *save_encoders, *new_encoder, *encoder; 557235783Skib struct drm_framebuffer *old_fb = NULL; 558235783Skib bool mode_changed = false; /* if true do a full mode set */ 559235783Skib bool fb_changed = false; /* if true and !mode_changed just do a flip */ 560235783Skib struct drm_connector *save_connectors, *connector; 561235783Skib int count = 0, ro, fail = 0; 562235783Skib struct drm_crtc_helper_funcs *crtc_funcs; 563235783Skib struct drm_mode_set save_set; 564280369Skib int ret; 565235783Skib int i; 566235783Skib 567235783Skib DRM_DEBUG_KMS("\n"); 568235783Skib 569235783Skib if (!set) 570235783Skib return -EINVAL; 571235783Skib 572235783Skib if (!set->crtc) 573235783Skib return -EINVAL; 574235783Skib 575235783Skib if (!set->crtc->helper_private) 576235783Skib return -EINVAL; 577235783Skib 578235783Skib crtc_funcs = set->crtc->helper_private; 579235783Skib 580235783Skib if (!set->mode) 581235783Skib set->fb = NULL; 582235783Skib 583235783Skib if (set->fb) { 584235783Skib DRM_DEBUG_KMS("[CRTC:%d] [FB:%d] #connectors=%d (x y) (%i %i)\n", 585235783Skib set->crtc->base.id, set->fb->base.id, 586235783Skib (int)set->num_connectors, set->x, set->y); 587235783Skib } else { 588235783Skib DRM_DEBUG_KMS("[CRTC:%d] [NOFB]\n", set->crtc->base.id); 589235783Skib return drm_crtc_helper_disable(set->crtc); 590235783Skib } 591235783Skib 592235783Skib dev = set->crtc->dev; 593235783Skib 594235783Skib /* Allocate space for the backup of all (non-pointer) crtc, encoder and 595235783Skib * connector data. */ 596282199Sdumbbell save_crtcs = malloc(dev->mode_config.num_crtc * 597282199Sdumbbell sizeof(struct drm_crtc), DRM_MEM_KMS, M_NOWAIT | M_ZERO); 598282199Sdumbbell if (!save_crtcs) 599282199Sdumbbell return -ENOMEM; 600282199Sdumbbell 601235783Skib save_encoders = malloc(dev->mode_config.num_encoder * 602282199Sdumbbell sizeof(struct drm_encoder), DRM_MEM_KMS, M_NOWAIT | M_ZERO); 603282199Sdumbbell if (!save_encoders) { 604282199Sdumbbell free(save_crtcs, DRM_MEM_KMS); 605282199Sdumbbell return -ENOMEM; 606282199Sdumbbell } 607282199Sdumbbell 608235783Skib save_connectors = malloc(dev->mode_config.num_connector * 609282199Sdumbbell sizeof(struct drm_connector), DRM_MEM_KMS, M_NOWAIT | M_ZERO); 610282199Sdumbbell if (!save_connectors) { 611282199Sdumbbell free(save_crtcs, DRM_MEM_KMS); 612282199Sdumbbell free(save_encoders, DRM_MEM_KMS); 613282199Sdumbbell return -ENOMEM; 614282199Sdumbbell } 615235783Skib 616235783Skib /* Copy data. Note that driver private data is not affected. 617235783Skib * Should anything bad happen only the expected state is 618235783Skib * restored, not the drivers personal bookkeeping. 619235783Skib */ 620235783Skib count = 0; 621235783Skib list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { 622235783Skib save_crtcs[count++] = *crtc; 623235783Skib } 624235783Skib 625235783Skib count = 0; 626235783Skib list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { 627235783Skib save_encoders[count++] = *encoder; 628235783Skib } 629235783Skib 630235783Skib count = 0; 631235783Skib list_for_each_entry(connector, &dev->mode_config.connector_list, head) { 632235783Skib save_connectors[count++] = *connector; 633235783Skib } 634235783Skib 635235783Skib save_set.crtc = set->crtc; 636235783Skib save_set.mode = &set->crtc->mode; 637235783Skib save_set.x = set->crtc->x; 638235783Skib save_set.y = set->crtc->y; 639235783Skib save_set.fb = set->crtc->fb; 640235783Skib 641235783Skib /* We should be able to check here if the fb has the same properties 642235783Skib * and then just flip_or_move it */ 643235783Skib if (set->crtc->fb != set->fb) { 644235783Skib /* If we have no fb then treat it as a full mode set */ 645235783Skib if (set->crtc->fb == NULL) { 646235783Skib DRM_DEBUG_KMS("crtc has no fb, full mode set\n"); 647235783Skib mode_changed = true; 648235783Skib } else if (set->fb == NULL) { 649235783Skib mode_changed = true; 650282199Sdumbbell } else if (set->fb->depth != set->crtc->fb->depth) { 651282199Sdumbbell mode_changed = true; 652282199Sdumbbell } else if (set->fb->bits_per_pixel != 653282199Sdumbbell set->crtc->fb->bits_per_pixel) { 654282199Sdumbbell mode_changed = true; 655235783Skib } else 656235783Skib fb_changed = true; 657235783Skib } 658235783Skib 659235783Skib if (set->x != set->crtc->x || set->y != set->crtc->y) 660235783Skib fb_changed = true; 661235783Skib 662235783Skib if (set->mode && !drm_mode_equal(set->mode, &set->crtc->mode)) { 663235783Skib DRM_DEBUG_KMS("modes are different, full mode set\n"); 664235783Skib drm_mode_debug_printmodeline(&set->crtc->mode); 665235783Skib drm_mode_debug_printmodeline(set->mode); 666235783Skib mode_changed = true; 667235783Skib } 668235783Skib 669235783Skib /* a) traverse passed in connector list and get encoders for them */ 670235783Skib count = 0; 671235783Skib list_for_each_entry(connector, &dev->mode_config.connector_list, head) { 672235783Skib struct drm_connector_helper_funcs *connector_funcs = 673235783Skib connector->helper_private; 674235783Skib new_encoder = connector->encoder; 675235783Skib for (ro = 0; ro < set->num_connectors; ro++) { 676235783Skib if (set->connectors[ro] == connector) { 677235783Skib new_encoder = connector_funcs->best_encoder(connector); 678235783Skib /* if we can't get an encoder for a connector 679235783Skib we are setting now - then fail */ 680235783Skib if (new_encoder == NULL) 681235783Skib /* don't break so fail path works correct */ 682235783Skib fail = 1; 683235783Skib break; 684235783Skib } 685235783Skib } 686235783Skib 687235783Skib if (new_encoder != connector->encoder) { 688235783Skib DRM_DEBUG_KMS("encoder changed, full mode switch\n"); 689235783Skib mode_changed = true; 690235783Skib /* If the encoder is reused for another connector, then 691235783Skib * the appropriate crtc will be set later. 692235783Skib */ 693235783Skib if (connector->encoder) 694235783Skib connector->encoder->crtc = NULL; 695235783Skib connector->encoder = new_encoder; 696235783Skib } 697235783Skib } 698235783Skib 699235783Skib if (fail) { 700235783Skib ret = -EINVAL; 701235783Skib goto fail; 702235783Skib } 703235783Skib 704235783Skib count = 0; 705235783Skib list_for_each_entry(connector, &dev->mode_config.connector_list, head) { 706235783Skib if (!connector->encoder) 707235783Skib continue; 708235783Skib 709235783Skib if (connector->encoder->crtc == set->crtc) 710235783Skib new_crtc = NULL; 711235783Skib else 712235783Skib new_crtc = connector->encoder->crtc; 713235783Skib 714235783Skib for (ro = 0; ro < set->num_connectors; ro++) { 715235783Skib if (set->connectors[ro] == connector) 716235783Skib new_crtc = set->crtc; 717235783Skib } 718235783Skib 719235783Skib /* Make sure the new CRTC will work with the encoder */ 720235783Skib if (new_crtc && 721235783Skib !drm_encoder_crtc_ok(connector->encoder, new_crtc)) { 722235783Skib ret = -EINVAL; 723235783Skib goto fail; 724235783Skib } 725235783Skib if (new_crtc != connector->encoder->crtc) { 726235783Skib DRM_DEBUG_KMS("crtc changed, full mode switch\n"); 727235783Skib mode_changed = true; 728235783Skib connector->encoder->crtc = new_crtc; 729235783Skib } 730235783Skib if (new_crtc) { 731235783Skib DRM_DEBUG_KMS("[CONNECTOR:%d:%s] to [CRTC:%d]\n", 732235783Skib connector->base.id, drm_get_connector_name(connector), 733235783Skib new_crtc->base.id); 734235783Skib } else { 735235783Skib DRM_DEBUG_KMS("[CONNECTOR:%d:%s] to [NOCRTC]\n", 736235783Skib connector->base.id, drm_get_connector_name(connector)); 737235783Skib } 738235783Skib } 739235783Skib 740235783Skib /* mode_set_base is not a required function */ 741235783Skib if (fb_changed && !crtc_funcs->mode_set_base) 742235783Skib mode_changed = true; 743235783Skib 744235783Skib if (mode_changed) { 745235783Skib set->crtc->enabled = drm_helper_crtc_in_use(set->crtc); 746235783Skib if (set->crtc->enabled) { 747235783Skib DRM_DEBUG_KMS("attempting to set mode from" 748235783Skib " userspace\n"); 749235783Skib drm_mode_debug_printmodeline(set->mode); 750235783Skib old_fb = set->crtc->fb; 751235783Skib set->crtc->fb = set->fb; 752235783Skib if (!drm_crtc_helper_set_mode(set->crtc, set->mode, 753235783Skib set->x, set->y, 754235783Skib old_fb)) { 755235783Skib DRM_ERROR("failed to set mode on [CRTC:%d]\n", 756235783Skib set->crtc->base.id); 757235783Skib set->crtc->fb = old_fb; 758235783Skib ret = -EINVAL; 759235783Skib goto fail; 760235783Skib } 761235783Skib DRM_DEBUG_KMS("Setting connector DPMS state to on\n"); 762235783Skib for (i = 0; i < set->num_connectors; i++) { 763235783Skib DRM_DEBUG_KMS("\t[CONNECTOR:%d:%s] set DPMS on\n", set->connectors[i]->base.id, 764235783Skib drm_get_connector_name(set->connectors[i])); 765282199Sdumbbell set->connectors[i]->funcs->dpms(set->connectors[i], DRM_MODE_DPMS_ON); 766235783Skib } 767235783Skib } 768235783Skib drm_helper_disable_unused_functions(dev); 769235783Skib } else if (fb_changed) { 770235783Skib set->crtc->x = set->x; 771235783Skib set->crtc->y = set->y; 772235783Skib 773235783Skib old_fb = set->crtc->fb; 774235783Skib if (set->crtc->fb != set->fb) 775235783Skib set->crtc->fb = set->fb; 776235783Skib ret = crtc_funcs->mode_set_base(set->crtc, 777235783Skib set->x, set->y, old_fb); 778235783Skib if (ret != 0) { 779235783Skib set->crtc->fb = old_fb; 780235783Skib goto fail; 781235783Skib } 782235783Skib } 783235783Skib 784235783Skib free(save_connectors, DRM_MEM_KMS); 785235783Skib free(save_encoders, DRM_MEM_KMS); 786235783Skib free(save_crtcs, DRM_MEM_KMS); 787235783Skib return 0; 788235783Skib 789235783Skibfail: 790235783Skib /* Restore all previous data. */ 791235783Skib count = 0; 792235783Skib list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { 793235783Skib *crtc = save_crtcs[count++]; 794235783Skib } 795235783Skib 796235783Skib count = 0; 797235783Skib list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { 798235783Skib *encoder = save_encoders[count++]; 799235783Skib } 800235783Skib 801235783Skib count = 0; 802235783Skib list_for_each_entry(connector, &dev->mode_config.connector_list, head) { 803235783Skib *connector = save_connectors[count++]; 804235783Skib } 805235783Skib 806235783Skib /* Try to restore the config */ 807235783Skib if (mode_changed && 808235783Skib !drm_crtc_helper_set_mode(save_set.crtc, save_set.mode, save_set.x, 809235783Skib save_set.y, save_set.fb)) 810235783Skib DRM_ERROR("failed to restore config after modeset failure\n"); 811235783Skib 812235783Skib free(save_connectors, DRM_MEM_KMS); 813235783Skib free(save_encoders, DRM_MEM_KMS); 814235783Skib free(save_crtcs, DRM_MEM_KMS); 815235783Skib return ret; 816235783Skib} 817282199SdumbbellEXPORT_SYMBOL(drm_crtc_helper_set_config); 818235783Skib 819235783Skibstatic int drm_helper_choose_encoder_dpms(struct drm_encoder *encoder) 820235783Skib{ 821235783Skib int dpms = DRM_MODE_DPMS_OFF; 822235783Skib struct drm_connector *connector; 823235783Skib struct drm_device *dev = encoder->dev; 824235783Skib 825235783Skib list_for_each_entry(connector, &dev->mode_config.connector_list, head) 826235783Skib if (connector->encoder == encoder) 827235783Skib if (connector->dpms < dpms) 828235783Skib dpms = connector->dpms; 829235783Skib return dpms; 830235783Skib} 831235783Skib 832235783Skibstatic int drm_helper_choose_crtc_dpms(struct drm_crtc *crtc) 833235783Skib{ 834235783Skib int dpms = DRM_MODE_DPMS_OFF; 835235783Skib struct drm_connector *connector; 836235783Skib struct drm_device *dev = crtc->dev; 837235783Skib 838235783Skib list_for_each_entry(connector, &dev->mode_config.connector_list, head) 839235783Skib if (connector->encoder && connector->encoder->crtc == crtc) 840235783Skib if (connector->dpms < dpms) 841235783Skib dpms = connector->dpms; 842235783Skib return dpms; 843235783Skib} 844235783Skib 845235783Skib/** 846282199Sdumbbell * drm_helper_connector_dpms() - connector dpms helper implementation 847282199Sdumbbell * @connector: affected connector 848282199Sdumbbell * @mode: DPMS mode 849235783Skib * 850282199Sdumbbell * This is the main helper function provided by the crtc helper framework for 851282199Sdumbbell * implementing the DPMS connector attribute. It computes the new desired DPMS 852282199Sdumbbell * state for all encoders and crtcs in the output mesh and calls the ->dpms() 853282199Sdumbbell * callback provided by the driver appropriately. 854235783Skib */ 855235783Skibvoid drm_helper_connector_dpms(struct drm_connector *connector, int mode) 856235783Skib{ 857235783Skib struct drm_encoder *encoder = connector->encoder; 858235783Skib struct drm_crtc *crtc = encoder ? encoder->crtc : NULL; 859235783Skib int old_dpms; 860235783Skib 861235783Skib if (mode == connector->dpms) 862235783Skib return; 863235783Skib 864235783Skib old_dpms = connector->dpms; 865235783Skib connector->dpms = mode; 866235783Skib 867235783Skib /* from off to on, do crtc then encoder */ 868235783Skib if (mode < old_dpms) { 869235783Skib if (crtc) { 870235783Skib struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; 871235783Skib if (crtc_funcs->dpms) 872235783Skib (*crtc_funcs->dpms) (crtc, 873235783Skib drm_helper_choose_crtc_dpms(crtc)); 874235783Skib } 875235783Skib if (encoder) { 876235783Skib struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private; 877235783Skib if (encoder_funcs->dpms) 878235783Skib (*encoder_funcs->dpms) (encoder, 879235783Skib drm_helper_choose_encoder_dpms(encoder)); 880235783Skib } 881235783Skib } 882235783Skib 883235783Skib /* from on to off, do encoder then crtc */ 884235783Skib if (mode > old_dpms) { 885235783Skib if (encoder) { 886235783Skib struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private; 887235783Skib if (encoder_funcs->dpms) 888235783Skib (*encoder_funcs->dpms) (encoder, 889235783Skib drm_helper_choose_encoder_dpms(encoder)); 890235783Skib } 891235783Skib if (crtc) { 892235783Skib struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; 893235783Skib if (crtc_funcs->dpms) 894235783Skib (*crtc_funcs->dpms) (crtc, 895235783Skib drm_helper_choose_crtc_dpms(crtc)); 896235783Skib } 897235783Skib } 898235783Skib 899235783Skib return; 900235783Skib} 901282199SdumbbellEXPORT_SYMBOL(drm_helper_connector_dpms); 902235783Skib 903235783Skibint drm_helper_mode_fill_fb_struct(struct drm_framebuffer *fb, 904235783Skib struct drm_mode_fb_cmd2 *mode_cmd) 905235783Skib{ 906235783Skib int i; 907235783Skib 908235783Skib fb->width = mode_cmd->width; 909235783Skib fb->height = mode_cmd->height; 910235783Skib for (i = 0; i < 4; i++) { 911235783Skib fb->pitches[i] = mode_cmd->pitches[i]; 912235783Skib fb->offsets[i] = mode_cmd->offsets[i]; 913235783Skib } 914235783Skib drm_fb_get_bpp_depth(mode_cmd->pixel_format, &fb->depth, 915235783Skib &fb->bits_per_pixel); 916235783Skib fb->pixel_format = mode_cmd->pixel_format; 917235783Skib 918235783Skib return 0; 919235783Skib} 920282199SdumbbellEXPORT_SYMBOL(drm_helper_mode_fill_fb_struct); 921235783Skib 922235783Skibint drm_helper_resume_force_mode(struct drm_device *dev) 923235783Skib{ 924235783Skib struct drm_crtc *crtc; 925235783Skib struct drm_encoder *encoder; 926235783Skib struct drm_encoder_helper_funcs *encoder_funcs; 927235783Skib struct drm_crtc_helper_funcs *crtc_funcs; 928235783Skib int ret; 929235783Skib 930235783Skib list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { 931235783Skib 932235783Skib if (!crtc->enabled) 933235783Skib continue; 934235783Skib 935235783Skib ret = drm_crtc_helper_set_mode(crtc, &crtc->mode, 936235783Skib crtc->x, crtc->y, crtc->fb); 937235783Skib 938282199Sdumbbell if (ret == false) 939235783Skib DRM_ERROR("failed to set mode on crtc %p\n", crtc); 940235783Skib 941235783Skib /* Turn off outputs that were already powered off */ 942235783Skib if (drm_helper_choose_crtc_dpms(crtc)) { 943235783Skib list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { 944235783Skib 945235783Skib if(encoder->crtc != crtc) 946235783Skib continue; 947235783Skib 948235783Skib encoder_funcs = encoder->helper_private; 949235783Skib if (encoder_funcs->dpms) 950235783Skib (*encoder_funcs->dpms) (encoder, 951282199Sdumbbell drm_helper_choose_encoder_dpms(encoder)); 952235783Skib } 953235783Skib 954235783Skib crtc_funcs = crtc->helper_private; 955235783Skib if (crtc_funcs->dpms) 956235783Skib (*crtc_funcs->dpms) (crtc, 957282199Sdumbbell drm_helper_choose_crtc_dpms(crtc)); 958235783Skib } 959235783Skib } 960235783Skib /* disable the unused connectors while restoring the modesetting */ 961235783Skib drm_helper_disable_unused_functions(dev); 962235783Skib return 0; 963235783Skib} 964282199SdumbbellEXPORT_SYMBOL(drm_helper_resume_force_mode); 965235783Skib 966282199Sdumbbellvoid drm_kms_helper_hotplug_event(struct drm_device *dev) 967282199Sdumbbell{ 968282199Sdumbbell /* send a uevent + call fbdev */ 969282199Sdumbbell#ifdef FREEBSD_NOTYET 970282199Sdumbbell drm_sysfs_hotplug_event(dev); 971282199Sdumbbell#endif /* FREEBSD_NOTYET */ 972282199Sdumbbell if (dev->mode_config.funcs->output_poll_changed) 973282199Sdumbbell dev->mode_config.funcs->output_poll_changed(dev); 974282199Sdumbbell} 975282199SdumbbellEXPORT_SYMBOL(drm_kms_helper_hotplug_event); 976282199Sdumbbell 977282199Sdumbbell#define DRM_OUTPUT_POLL_PERIOD (10*HZ) 978235783Skibstatic void output_poll_execute(void *ctx, int pending) 979235783Skib{ 980282199Sdumbbell struct drm_device *dev = ctx; 981235783Skib struct drm_connector *connector; 982235783Skib enum drm_connector_status old_status; 983235783Skib bool repoll = false, changed = false; 984235783Skib 985235783Skib if (!drm_kms_helper_poll) 986235783Skib return; 987235783Skib 988235783Skib sx_xlock(&dev->mode_config.mutex); 989235783Skib list_for_each_entry(connector, &dev->mode_config.connector_list, head) { 990235783Skib 991282199Sdumbbell /* Ignore forced connectors. */ 992282199Sdumbbell if (connector->force) 993235783Skib continue; 994235783Skib 995282199Sdumbbell /* Ignore HPD capable connectors and connectors where we don't 996282199Sdumbbell * want any hotplug detection at all for polling. */ 997282199Sdumbbell if (!connector->polled || connector->polled == DRM_CONNECTOR_POLL_HPD) 998282199Sdumbbell continue; 999235783Skib 1000282199Sdumbbell repoll = true; 1001282199Sdumbbell 1002235783Skib old_status = connector->status; 1003235783Skib /* if we are connected and don't want to poll for disconnect 1004235783Skib skip it */ 1005235783Skib if (old_status == connector_status_connected && 1006282199Sdumbbell !(connector->polled & DRM_CONNECTOR_POLL_DISCONNECT)) 1007235783Skib continue; 1008235783Skib 1009235783Skib connector->status = connector->funcs->detect(connector, false); 1010235783Skib DRM_DEBUG_KMS("[CONNECTOR:%d:%s] status updated from %d to %d\n", 1011235783Skib connector->base.id, 1012235783Skib drm_get_connector_name(connector), 1013235783Skib old_status, connector->status); 1014235783Skib if (old_status != connector->status) 1015235783Skib changed = true; 1016235783Skib } 1017235783Skib 1018235783Skib sx_xunlock(&dev->mode_config.mutex); 1019235783Skib 1020282199Sdumbbell if (changed) 1021282199Sdumbbell drm_kms_helper_hotplug_event(dev); 1022235783Skib 1023282199Sdumbbell if (repoll) 1024235783Skib taskqueue_enqueue_timeout(taskqueue_thread, 1025282199Sdumbbell &dev->mode_config.output_poll_work, 1026235783Skib DRM_OUTPUT_POLL_PERIOD); 1027235783Skib} 1028235783Skib 1029235783Skibvoid drm_kms_helper_poll_disable(struct drm_device *dev) 1030235783Skib{ 1031235783Skib if (!dev->mode_config.poll_enabled) 1032235783Skib return; 1033235783Skib taskqueue_cancel_timeout(taskqueue_thread, 1034282199Sdumbbell &dev->mode_config.output_poll_work, NULL); 1035235783Skib} 1036282199SdumbbellEXPORT_SYMBOL(drm_kms_helper_poll_disable); 1037235783Skib 1038235783Skibvoid drm_kms_helper_poll_enable(struct drm_device *dev) 1039235783Skib{ 1040235783Skib bool poll = false; 1041235783Skib struct drm_connector *connector; 1042235783Skib 1043235783Skib if (!dev->mode_config.poll_enabled || !drm_kms_helper_poll) 1044235783Skib return; 1045235783Skib 1046235783Skib list_for_each_entry(connector, &dev->mode_config.connector_list, head) { 1047282199Sdumbbell if (connector->polled & (DRM_CONNECTOR_POLL_CONNECT | 1048282199Sdumbbell DRM_CONNECTOR_POLL_DISCONNECT)) 1049235783Skib poll = true; 1050235783Skib } 1051235783Skib 1052282199Sdumbbell if (poll) 1053235783Skib taskqueue_enqueue_timeout(taskqueue_thread, 1054282199Sdumbbell &dev->mode_config.output_poll_work, DRM_OUTPUT_POLL_PERIOD); 1055235783Skib} 1056282199SdumbbellEXPORT_SYMBOL(drm_kms_helper_poll_enable); 1057235783Skib 1058235783Skibvoid drm_kms_helper_poll_init(struct drm_device *dev) 1059235783Skib{ 1060282199Sdumbbell TIMEOUT_TASK_INIT(taskqueue_thread, &dev->mode_config.output_poll_work, 1061235783Skib 0, output_poll_execute, dev); 1062235783Skib dev->mode_config.poll_enabled = true; 1063235783Skib 1064235783Skib drm_kms_helper_poll_enable(dev); 1065235783Skib} 1066282199SdumbbellEXPORT_SYMBOL(drm_kms_helper_poll_init); 1067235783Skib 1068235783Skibvoid drm_kms_helper_poll_fini(struct drm_device *dev) 1069235783Skib{ 1070235783Skib drm_kms_helper_poll_disable(dev); 1071235783Skib} 1072282199SdumbbellEXPORT_SYMBOL(drm_kms_helper_poll_fini); 1073235783Skib 1074235783Skibvoid drm_helper_hpd_irq_event(struct drm_device *dev) 1075235783Skib{ 1076282199Sdumbbell struct drm_connector *connector; 1077282199Sdumbbell enum drm_connector_status old_status; 1078282199Sdumbbell bool changed = false; 1079282199Sdumbbell 1080235783Skib if (!dev->mode_config.poll_enabled) 1081235783Skib return; 1082235783Skib 1083282199Sdumbbell sx_xlock(&dev->mode_config.mutex); 1084282199Sdumbbell list_for_each_entry(connector, &dev->mode_config.connector_list, head) { 1085282199Sdumbbell 1086282199Sdumbbell /* Only handle HPD capable connectors. */ 1087282199Sdumbbell if (!(connector->polled & DRM_CONNECTOR_POLL_HPD)) 1088282199Sdumbbell continue; 1089282199Sdumbbell 1090282199Sdumbbell old_status = connector->status; 1091282199Sdumbbell 1092282199Sdumbbell connector->status = connector->funcs->detect(connector, false); 1093282199Sdumbbell DRM_DEBUG_KMS("[CONNECTOR:%d:%s] status updated from %d to %d\n", 1094282199Sdumbbell connector->base.id, 1095282199Sdumbbell drm_get_connector_name(connector), 1096282199Sdumbbell old_status, connector->status); 1097282199Sdumbbell if (old_status != connector->status) 1098282199Sdumbbell changed = true; 1099282199Sdumbbell } 1100282199Sdumbbell 1101282199Sdumbbell sx_xunlock(&dev->mode_config.mutex); 1102282199Sdumbbell 1103282199Sdumbbell if (changed) 1104282199Sdumbbell drm_kms_helper_hotplug_event(dev); 1105235783Skib} 1106282199SdumbbellEXPORT_SYMBOL(drm_helper_hpd_irq_event); 1107