Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2006-2008 Intel Corporation |
| 3 | * Copyright (c) 2007 Dave Airlie <airlied@linux.ie> |
| 4 | * |
| 5 | * DRM core CRTC related functions |
| 6 | * |
| 7 | * Permission to use, copy, modify, distribute, and sell this software and its |
| 8 | * documentation for any purpose is hereby granted without fee, provided that |
| 9 | * the above copyright notice appear in all copies and that both that copyright |
| 10 | * notice and this permission notice appear in supporting documentation, and |
| 11 | * that the name of the copyright holders not be used in advertising or |
| 12 | * publicity pertaining to distribution of the software without specific, |
| 13 | * written prior permission. The copyright holders make no representations |
| 14 | * about the suitability of this software for any purpose. It is provided "as |
| 15 | * is" without express or implied warranty. |
| 16 | * |
| 17 | * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, |
| 18 | * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO |
| 19 | * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR |
| 20 | * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, |
| 21 | * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER |
| 22 | * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE |
| 23 | * OF THIS SOFTWARE. |
| 24 | * |
| 25 | * Authors: |
| 26 | * Keith Packard |
| 27 | * Eric Anholt <eric@anholt.net> |
| 28 | * Dave Airlie <airlied@linux.ie> |
| 29 | * Jesse Barnes <jesse.barnes@intel.com> |
| 30 | */ |
| 31 | |
| 32 | #include "drmP.h" |
| 33 | #include "drm_crtc.h" |
| 34 | #include "drm_crtc_helper.h" |
| 35 | |
| 36 | /* |
Dave Airlie | aa91c66 | 2008-12-08 14:55:27 +1000 | [diff] [blame] | 37 | * Detailed mode info for 800x600@60Hz |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 38 | */ |
Jesse Barnes | 40a518d | 2009-01-12 12:05:32 -0800 | [diff] [blame] | 39 | static struct drm_display_mode std_modes[] = { |
Dave Airlie | aa91c66 | 2008-12-08 14:55:27 +1000 | [diff] [blame] | 40 | { DRM_MODE("800x600", DRM_MODE_TYPE_DEFAULT, 40000, 800, 840, |
| 41 | 968, 1056, 0, 600, 601, 605, 628, 0, |
| 42 | DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) }, |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 43 | }; |
| 44 | |
| 45 | /** |
| 46 | * drm_helper_probe_connector_modes - get complete set of display modes |
| 47 | * @dev: DRM device |
| 48 | * @maxX: max width for modes |
| 49 | * @maxY: max height for modes |
| 50 | * |
| 51 | * LOCKING: |
| 52 | * Caller must hold mode config lock. |
| 53 | * |
| 54 | * Based on @dev's mode_config layout, scan all the connectors and try to detect |
| 55 | * modes on them. Modes will first be added to the connector's probed_modes |
| 56 | * list, then culled (based on validity and the @maxX, @maxY parameters) and |
| 57 | * put into the normal modes list. |
| 58 | * |
| 59 | * Intended to be used either at bootup time or when major configuration |
| 60 | * changes have occurred. |
| 61 | * |
| 62 | * FIXME: take into account monitor limits |
Jesse Barnes | 40a518d | 2009-01-12 12:05:32 -0800 | [diff] [blame] | 63 | * |
| 64 | * RETURNS: |
| 65 | * Number of modes found on @connector. |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 66 | */ |
Jesse Barnes | 40a518d | 2009-01-12 12:05:32 -0800 | [diff] [blame] | 67 | int drm_helper_probe_single_connector_modes(struct drm_connector *connector, |
| 68 | uint32_t maxX, uint32_t maxY) |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 69 | { |
| 70 | struct drm_device *dev = connector->dev; |
| 71 | struct drm_display_mode *mode, *t; |
| 72 | struct drm_connector_helper_funcs *connector_funcs = |
| 73 | connector->helper_private; |
Jesse Barnes | 40a518d | 2009-01-12 12:05:32 -0800 | [diff] [blame] | 74 | int count = 0; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 75 | |
| 76 | DRM_DEBUG("%s\n", drm_get_connector_name(connector)); |
| 77 | /* set all modes to the unverified state */ |
| 78 | list_for_each_entry_safe(mode, t, &connector->modes, head) |
| 79 | mode->status = MODE_UNVERIFIED; |
| 80 | |
| 81 | connector->status = connector->funcs->detect(connector); |
| 82 | |
| 83 | if (connector->status == connector_status_disconnected) { |
| 84 | DRM_DEBUG("%s is disconnected\n", |
| 85 | drm_get_connector_name(connector)); |
| 86 | /* TODO set EDID to NULL */ |
Jesse Barnes | 40a518d | 2009-01-12 12:05:32 -0800 | [diff] [blame] | 87 | return 0; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 88 | } |
| 89 | |
Jesse Barnes | 40a518d | 2009-01-12 12:05:32 -0800 | [diff] [blame] | 90 | count = (*connector_funcs->get_modes)(connector); |
| 91 | if (!count) |
| 92 | return 0; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 93 | |
Jesse Barnes | 40a518d | 2009-01-12 12:05:32 -0800 | [diff] [blame] | 94 | drm_mode_connector_list_update(connector); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 95 | |
| 96 | if (maxX && maxY) |
| 97 | drm_mode_validate_size(dev, &connector->modes, maxX, |
| 98 | maxY, 0); |
| 99 | list_for_each_entry_safe(mode, t, &connector->modes, head) { |
| 100 | if (mode->status == MODE_OK) |
| 101 | mode->status = connector_funcs->mode_valid(connector, |
| 102 | mode); |
| 103 | } |
| 104 | |
| 105 | |
| 106 | drm_mode_prune_invalid(dev, &connector->modes, true); |
| 107 | |
Jesse Barnes | 40a518d | 2009-01-12 12:05:32 -0800 | [diff] [blame] | 108 | if (list_empty(&connector->modes)) |
| 109 | return 0; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 110 | |
| 111 | drm_mode_sort(&connector->modes); |
| 112 | |
| 113 | DRM_DEBUG("Probed modes for %s\n", drm_get_connector_name(connector)); |
| 114 | list_for_each_entry_safe(mode, t, &connector->modes, head) { |
| 115 | mode->vrefresh = drm_mode_vrefresh(mode); |
| 116 | |
| 117 | drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V); |
| 118 | drm_mode_debug_printmodeline(mode); |
| 119 | } |
Jesse Barnes | 40a518d | 2009-01-12 12:05:32 -0800 | [diff] [blame] | 120 | |
| 121 | return count; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 122 | } |
| 123 | EXPORT_SYMBOL(drm_helper_probe_single_connector_modes); |
| 124 | |
Jesse Barnes | 40a518d | 2009-01-12 12:05:32 -0800 | [diff] [blame] | 125 | int drm_helper_probe_connector_modes(struct drm_device *dev, uint32_t maxX, |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 126 | uint32_t maxY) |
| 127 | { |
| 128 | struct drm_connector *connector; |
Jesse Barnes | 40a518d | 2009-01-12 12:05:32 -0800 | [diff] [blame] | 129 | int count = 0; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 130 | |
| 131 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
Jesse Barnes | 40a518d | 2009-01-12 12:05:32 -0800 | [diff] [blame] | 132 | count += drm_helper_probe_single_connector_modes(connector, |
| 133 | maxX, maxY); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 134 | } |
Jesse Barnes | 40a518d | 2009-01-12 12:05:32 -0800 | [diff] [blame] | 135 | |
| 136 | return count; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 137 | } |
| 138 | EXPORT_SYMBOL(drm_helper_probe_connector_modes); |
| 139 | |
Jesse Barnes | 40a518d | 2009-01-12 12:05:32 -0800 | [diff] [blame] | 140 | static void drm_helper_add_std_modes(struct drm_device *dev, |
| 141 | struct drm_connector *connector) |
| 142 | { |
| 143 | struct drm_display_mode *mode, *t; |
| 144 | int i; |
| 145 | |
| 146 | for (i = 0; i < ARRAY_SIZE(std_modes); i++) { |
| 147 | struct drm_display_mode *stdmode; |
| 148 | |
| 149 | /* |
| 150 | * When no valid EDID modes are available we end up |
| 151 | * here and bailed in the past, now we add some standard |
| 152 | * modes and move on. |
| 153 | */ |
| 154 | stdmode = drm_mode_duplicate(dev, &std_modes[i]); |
| 155 | drm_mode_probed_add(connector, stdmode); |
| 156 | drm_mode_list_concat(&connector->probed_modes, |
| 157 | &connector->modes); |
| 158 | |
| 159 | DRM_DEBUG("Adding mode %s to %s\n", stdmode->name, |
| 160 | drm_get_connector_name(connector)); |
| 161 | } |
| 162 | drm_mode_sort(&connector->modes); |
| 163 | |
| 164 | DRM_DEBUG("Added std modes on %s\n", drm_get_connector_name(connector)); |
| 165 | list_for_each_entry_safe(mode, t, &connector->modes, head) { |
| 166 | mode->vrefresh = drm_mode_vrefresh(mode); |
| 167 | |
| 168 | drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V); |
| 169 | drm_mode_debug_printmodeline(mode); |
| 170 | } |
| 171 | } |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 172 | |
| 173 | /** |
| 174 | * drm_helper_crtc_in_use - check if a given CRTC is in a mode_config |
| 175 | * @crtc: CRTC to check |
| 176 | * |
| 177 | * LOCKING: |
| 178 | * Caller must hold mode config lock. |
| 179 | * |
| 180 | * Walk @crtc's DRM device's mode_config and see if it's in use. |
| 181 | * |
| 182 | * RETURNS: |
| 183 | * True if @crtc is part of the mode_config, false otherwise. |
| 184 | */ |
| 185 | bool drm_helper_crtc_in_use(struct drm_crtc *crtc) |
| 186 | { |
| 187 | struct drm_encoder *encoder; |
| 188 | struct drm_device *dev = crtc->dev; |
| 189 | /* FIXME: Locking around list access? */ |
| 190 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) |
| 191 | if (encoder->crtc == crtc) |
| 192 | return true; |
| 193 | return false; |
| 194 | } |
| 195 | EXPORT_SYMBOL(drm_helper_crtc_in_use); |
| 196 | |
| 197 | /** |
| 198 | * drm_disable_unused_functions - disable unused objects |
| 199 | * @dev: DRM device |
| 200 | * |
| 201 | * LOCKING: |
| 202 | * Caller must hold mode config lock. |
| 203 | * |
| 204 | * If an connector or CRTC isn't part of @dev's mode_config, it can be disabled |
| 205 | * by calling its dpms function, which should power it off. |
| 206 | */ |
| 207 | void drm_helper_disable_unused_functions(struct drm_device *dev) |
| 208 | { |
| 209 | struct drm_encoder *encoder; |
| 210 | struct drm_encoder_helper_funcs *encoder_funcs; |
| 211 | struct drm_crtc *crtc; |
| 212 | |
| 213 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
| 214 | encoder_funcs = encoder->helper_private; |
| 215 | if (!encoder->crtc) |
| 216 | (*encoder_funcs->dpms)(encoder, DRM_MODE_DPMS_OFF); |
| 217 | } |
| 218 | |
| 219 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
| 220 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; |
| 221 | crtc->enabled = drm_helper_crtc_in_use(crtc); |
| 222 | if (!crtc->enabled) { |
| 223 | crtc_funcs->dpms(crtc, DRM_MODE_DPMS_OFF); |
| 224 | crtc->fb = NULL; |
| 225 | } |
| 226 | } |
| 227 | } |
| 228 | EXPORT_SYMBOL(drm_helper_disable_unused_functions); |
| 229 | |
| 230 | static struct drm_display_mode *drm_has_preferred_mode(struct drm_connector *connector, int width, int height) |
| 231 | { |
| 232 | struct drm_display_mode *mode; |
| 233 | |
| 234 | list_for_each_entry(mode, &connector->modes, head) { |
| 235 | if (drm_mode_width(mode) > width || |
| 236 | drm_mode_height(mode) > height) |
| 237 | continue; |
| 238 | if (mode->type & DRM_MODE_TYPE_PREFERRED) |
| 239 | return mode; |
| 240 | } |
| 241 | return NULL; |
| 242 | } |
| 243 | |
| 244 | static bool drm_connector_enabled(struct drm_connector *connector, bool strict) |
| 245 | { |
| 246 | bool enable; |
| 247 | |
| 248 | if (strict) { |
| 249 | enable = connector->status == connector_status_connected; |
| 250 | } else { |
| 251 | enable = connector->status != connector_status_disconnected; |
| 252 | } |
| 253 | return enable; |
| 254 | } |
| 255 | |
| 256 | static void drm_enable_connectors(struct drm_device *dev, bool *enabled) |
| 257 | { |
| 258 | bool any_enabled = false; |
| 259 | struct drm_connector *connector; |
| 260 | int i = 0; |
| 261 | |
| 262 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
| 263 | enabled[i] = drm_connector_enabled(connector, true); |
Jesse Barnes | 40a518d | 2009-01-12 12:05:32 -0800 | [diff] [blame] | 264 | DRM_DEBUG("connector %d enabled? %s\n", connector->base.id, |
| 265 | enabled[i] ? "yes" : "no"); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 266 | any_enabled |= enabled[i]; |
| 267 | i++; |
| 268 | } |
| 269 | |
| 270 | if (any_enabled) |
| 271 | return; |
| 272 | |
| 273 | i = 0; |
| 274 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
| 275 | enabled[i] = drm_connector_enabled(connector, false); |
| 276 | i++; |
| 277 | } |
| 278 | } |
| 279 | |
| 280 | static bool drm_target_preferred(struct drm_device *dev, |
| 281 | struct drm_display_mode **modes, |
| 282 | bool *enabled, int width, int height) |
| 283 | { |
| 284 | struct drm_connector *connector; |
| 285 | int i = 0; |
| 286 | |
| 287 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
| 288 | |
| 289 | if (enabled[i] == false) { |
| 290 | i++; |
| 291 | continue; |
| 292 | } |
| 293 | |
Jesse Barnes | 40a518d | 2009-01-12 12:05:32 -0800 | [diff] [blame] | 294 | DRM_DEBUG("looking for preferred mode on connector %d\n", |
| 295 | connector->base.id); |
| 296 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 297 | modes[i] = drm_has_preferred_mode(connector, width, height); |
Jesse Barnes | 40a518d | 2009-01-12 12:05:32 -0800 | [diff] [blame] | 298 | /* No preferred modes, pick one off the list */ |
| 299 | if (!modes[i] && !list_empty(&connector->modes)) { |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 300 | list_for_each_entry(modes[i], &connector->modes, head) |
| 301 | break; |
| 302 | } |
Jesse Barnes | 40a518d | 2009-01-12 12:05:32 -0800 | [diff] [blame] | 303 | DRM_DEBUG("found mode %s\n", modes[i] ? modes[i]->name : |
| 304 | "none"); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 305 | i++; |
| 306 | } |
| 307 | return true; |
| 308 | } |
| 309 | |
| 310 | static int drm_pick_crtcs(struct drm_device *dev, |
| 311 | struct drm_crtc **best_crtcs, |
| 312 | struct drm_display_mode **modes, |
| 313 | int n, int width, int height) |
| 314 | { |
| 315 | int c, o; |
| 316 | struct drm_connector *connector; |
| 317 | struct drm_connector_helper_funcs *connector_funcs; |
| 318 | struct drm_encoder *encoder; |
| 319 | struct drm_crtc *best_crtc; |
| 320 | int my_score, best_score, score; |
| 321 | struct drm_crtc **crtcs, *crtc; |
| 322 | |
| 323 | if (n == dev->mode_config.num_connector) |
| 324 | return 0; |
| 325 | c = 0; |
| 326 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
| 327 | if (c == n) |
| 328 | break; |
| 329 | c++; |
| 330 | } |
| 331 | |
| 332 | best_crtcs[n] = NULL; |
| 333 | best_crtc = NULL; |
| 334 | best_score = drm_pick_crtcs(dev, best_crtcs, modes, n+1, width, height); |
| 335 | if (modes[n] == NULL) |
| 336 | return best_score; |
| 337 | |
| 338 | crtcs = kmalloc(dev->mode_config.num_connector * |
| 339 | sizeof(struct drm_crtc *), GFP_KERNEL); |
| 340 | if (!crtcs) |
| 341 | return best_score; |
| 342 | |
| 343 | my_score = 1; |
| 344 | if (connector->status == connector_status_connected) |
| 345 | my_score++; |
| 346 | if (drm_has_preferred_mode(connector, width, height)) |
| 347 | my_score++; |
| 348 | |
| 349 | connector_funcs = connector->helper_private; |
| 350 | encoder = connector_funcs->best_encoder(connector); |
| 351 | if (!encoder) |
| 352 | goto out; |
| 353 | |
| 354 | connector->encoder = encoder; |
| 355 | |
| 356 | /* select a crtc for this connector and then attempt to configure |
| 357 | remaining connectors */ |
| 358 | c = 0; |
| 359 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
| 360 | |
| 361 | if ((connector->encoder->possible_crtcs & (1 << c)) == 0) { |
| 362 | c++; |
| 363 | continue; |
| 364 | } |
| 365 | |
| 366 | for (o = 0; o < n; o++) |
| 367 | if (best_crtcs[o] == crtc) |
| 368 | break; |
| 369 | |
| 370 | if (o < n) { |
| 371 | /* ignore cloning for now */ |
| 372 | c++; |
| 373 | continue; |
| 374 | } |
| 375 | |
| 376 | crtcs[n] = crtc; |
| 377 | memcpy(crtcs, best_crtcs, n * sizeof(struct drm_crtc *)); |
| 378 | score = my_score + drm_pick_crtcs(dev, crtcs, modes, n + 1, |
| 379 | width, height); |
| 380 | if (score > best_score) { |
| 381 | best_crtc = crtc; |
| 382 | best_score = score; |
| 383 | memcpy(best_crtcs, crtcs, |
| 384 | dev->mode_config.num_connector * |
| 385 | sizeof(struct drm_crtc *)); |
| 386 | } |
| 387 | c++; |
| 388 | } |
| 389 | out: |
| 390 | kfree(crtcs); |
| 391 | return best_score; |
| 392 | } |
| 393 | |
| 394 | static void drm_setup_crtcs(struct drm_device *dev) |
| 395 | { |
| 396 | struct drm_crtc **crtcs; |
| 397 | struct drm_display_mode **modes; |
| 398 | struct drm_encoder *encoder; |
| 399 | struct drm_connector *connector; |
| 400 | bool *enabled; |
| 401 | int width, height; |
| 402 | int i, ret; |
| 403 | |
Jesse Barnes | 40a518d | 2009-01-12 12:05:32 -0800 | [diff] [blame] | 404 | DRM_DEBUG("\n"); |
| 405 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 406 | width = dev->mode_config.max_width; |
| 407 | height = dev->mode_config.max_height; |
| 408 | |
| 409 | /* clean out all the encoder/crtc combos */ |
| 410 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
| 411 | encoder->crtc = NULL; |
| 412 | } |
| 413 | |
| 414 | crtcs = kcalloc(dev->mode_config.num_connector, |
| 415 | sizeof(struct drm_crtc *), GFP_KERNEL); |
| 416 | modes = kcalloc(dev->mode_config.num_connector, |
| 417 | sizeof(struct drm_display_mode *), GFP_KERNEL); |
| 418 | enabled = kcalloc(dev->mode_config.num_connector, |
| 419 | sizeof(bool), GFP_KERNEL); |
| 420 | |
| 421 | drm_enable_connectors(dev, enabled); |
| 422 | |
| 423 | ret = drm_target_preferred(dev, modes, enabled, width, height); |
| 424 | if (!ret) |
| 425 | DRM_ERROR("Unable to find initial modes\n"); |
| 426 | |
Jesse Barnes | 40a518d | 2009-01-12 12:05:32 -0800 | [diff] [blame] | 427 | DRM_DEBUG("picking CRTCs for %dx%d config\n", width, height); |
| 428 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 429 | drm_pick_crtcs(dev, crtcs, modes, 0, width, height); |
| 430 | |
| 431 | i = 0; |
| 432 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
| 433 | struct drm_display_mode *mode = modes[i]; |
| 434 | struct drm_crtc *crtc = crtcs[i]; |
| 435 | |
| 436 | if (connector->encoder == NULL) { |
| 437 | i++; |
| 438 | continue; |
| 439 | } |
| 440 | |
| 441 | if (mode && crtc) { |
Jesse Barnes | 40a518d | 2009-01-12 12:05:32 -0800 | [diff] [blame] | 442 | DRM_DEBUG("desired mode %s set on crtc %d\n", |
| 443 | mode->name, crtc->base.id); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 444 | crtc->desired_mode = mode; |
| 445 | connector->encoder->crtc = crtc; |
| 446 | } else |
| 447 | connector->encoder->crtc = NULL; |
| 448 | i++; |
| 449 | } |
| 450 | |
| 451 | kfree(crtcs); |
| 452 | kfree(modes); |
| 453 | kfree(enabled); |
| 454 | } |
Jesse Barnes | 7bec756 | 2009-02-23 16:09:34 -0800 | [diff] [blame] | 455 | |
| 456 | /** |
| 457 | * drm_encoder_crtc_ok - can a given crtc drive a given encoder? |
| 458 | * @encoder: encoder to test |
| 459 | * @crtc: crtc to test |
| 460 | * |
| 461 | * Return false if @encoder can't be driven by @crtc, true otherwise. |
| 462 | */ |
| 463 | static bool drm_encoder_crtc_ok(struct drm_encoder *encoder, |
| 464 | struct drm_crtc *crtc) |
| 465 | { |
| 466 | struct drm_device *dev; |
| 467 | struct drm_crtc *tmp; |
| 468 | int crtc_mask = 1; |
| 469 | |
| 470 | WARN(!crtc, "checking null crtc?"); |
| 471 | |
| 472 | dev = crtc->dev; |
| 473 | |
| 474 | list_for_each_entry(tmp, &dev->mode_config.crtc_list, head) { |
| 475 | if (tmp == crtc) |
| 476 | break; |
| 477 | crtc_mask <<= 1; |
| 478 | } |
| 479 | |
| 480 | if (encoder->possible_crtcs & crtc_mask) |
| 481 | return true; |
| 482 | return false; |
| 483 | } |
| 484 | |
| 485 | /* |
| 486 | * Check the CRTC we're going to map each output to vs. its current |
| 487 | * CRTC. If they don't match, we have to disable the output and the CRTC |
| 488 | * since the driver will have to re-route things. |
| 489 | */ |
| 490 | static void |
| 491 | drm_crtc_prepare_encoders(struct drm_device *dev) |
| 492 | { |
| 493 | struct drm_encoder_helper_funcs *encoder_funcs; |
| 494 | struct drm_encoder *encoder; |
| 495 | |
| 496 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
| 497 | encoder_funcs = encoder->helper_private; |
| 498 | /* Disable unused encoders */ |
| 499 | if (encoder->crtc == NULL) |
| 500 | (*encoder_funcs->dpms)(encoder, DRM_MODE_DPMS_OFF); |
| 501 | /* Disable encoders whose CRTC is about to change */ |
| 502 | if (encoder_funcs->get_crtc && |
| 503 | encoder->crtc != (*encoder_funcs->get_crtc)(encoder)) |
| 504 | (*encoder_funcs->dpms)(encoder, DRM_MODE_DPMS_OFF); |
| 505 | } |
| 506 | } |
| 507 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 508 | /** |
| 509 | * drm_crtc_set_mode - set a mode |
| 510 | * @crtc: CRTC to program |
| 511 | * @mode: mode to use |
| 512 | * @x: width of mode |
| 513 | * @y: height of mode |
| 514 | * |
| 515 | * LOCKING: |
| 516 | * Caller must hold mode config lock. |
| 517 | * |
| 518 | * Try to set @mode on @crtc. Give @crtc and its associated connectors a chance |
| 519 | * to fixup or reject the mode prior to trying to set it. |
| 520 | * |
| 521 | * RETURNS: |
| 522 | * True if the mode was set successfully, or false otherwise. |
| 523 | */ |
| 524 | bool drm_crtc_helper_set_mode(struct drm_crtc *crtc, |
| 525 | struct drm_display_mode *mode, |
Kristian Høgsberg | 3c4fdcf | 2008-12-17 22:14:46 -0500 | [diff] [blame] | 526 | int x, int y, |
| 527 | struct drm_framebuffer *old_fb) |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 528 | { |
| 529 | struct drm_device *dev = crtc->dev; |
| 530 | struct drm_display_mode *adjusted_mode, saved_mode; |
| 531 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; |
| 532 | struct drm_encoder_helper_funcs *encoder_funcs; |
| 533 | int saved_x, saved_y; |
| 534 | struct drm_encoder *encoder; |
| 535 | bool ret = true; |
Jesse Barnes | 712531b | 2009-01-09 13:56:14 -0800 | [diff] [blame] | 536 | bool depth_changed, bpp_changed; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 537 | |
| 538 | adjusted_mode = drm_mode_duplicate(dev, mode); |
| 539 | |
| 540 | crtc->enabled = drm_helper_crtc_in_use(crtc); |
| 541 | |
| 542 | if (!crtc->enabled) |
| 543 | return true; |
| 544 | |
Jesse Barnes | 712531b | 2009-01-09 13:56:14 -0800 | [diff] [blame] | 545 | if (old_fb && crtc->fb) { |
| 546 | depth_changed = (old_fb->depth != crtc->fb->depth); |
| 547 | bpp_changed = (old_fb->bits_per_pixel != |
| 548 | crtc->fb->bits_per_pixel); |
| 549 | } else { |
| 550 | depth_changed = true; |
| 551 | bpp_changed = true; |
| 552 | } |
| 553 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 554 | saved_mode = crtc->mode; |
| 555 | saved_x = crtc->x; |
| 556 | saved_y = crtc->y; |
| 557 | |
| 558 | /* Update crtc values up front so the driver can rely on them for mode |
| 559 | * setting. |
| 560 | */ |
| 561 | crtc->mode = *mode; |
| 562 | crtc->x = x; |
| 563 | crtc->y = y; |
| 564 | |
| 565 | if (drm_mode_equal(&saved_mode, &crtc->mode)) { |
Jesse Barnes | 712531b | 2009-01-09 13:56:14 -0800 | [diff] [blame] | 566 | if (saved_x != crtc->x || saved_y != crtc->y || |
| 567 | depth_changed || bpp_changed) { |
Chris Wilson | 5c3b82e | 2009-02-11 13:25:09 +0000 | [diff] [blame] | 568 | ret = !crtc_funcs->mode_set_base(crtc, crtc->x, crtc->y, |
| 569 | old_fb); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 570 | goto done; |
| 571 | } |
| 572 | } |
| 573 | |
| 574 | /* Pass our mode to the connectors and the CRTC to give them a chance to |
| 575 | * adjust it according to limitations or connector properties, and also |
| 576 | * a chance to reject the mode entirely. |
| 577 | */ |
| 578 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
| 579 | |
| 580 | if (encoder->crtc != crtc) |
| 581 | continue; |
| 582 | encoder_funcs = encoder->helper_private; |
| 583 | if (!(ret = encoder_funcs->mode_fixup(encoder, mode, |
| 584 | adjusted_mode))) { |
| 585 | goto done; |
| 586 | } |
| 587 | } |
| 588 | |
| 589 | if (!(ret = crtc_funcs->mode_fixup(crtc, mode, adjusted_mode))) { |
| 590 | goto done; |
| 591 | } |
| 592 | |
| 593 | /* Prepare the encoders and CRTCs before setting the mode. */ |
| 594 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
| 595 | |
| 596 | if (encoder->crtc != crtc) |
| 597 | continue; |
| 598 | encoder_funcs = encoder->helper_private; |
| 599 | /* Disable the encoders as the first thing we do. */ |
| 600 | encoder_funcs->prepare(encoder); |
| 601 | } |
| 602 | |
Jesse Barnes | 7bec756 | 2009-02-23 16:09:34 -0800 | [diff] [blame] | 603 | drm_crtc_prepare_encoders(dev); |
| 604 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 605 | crtc_funcs->prepare(crtc); |
| 606 | |
| 607 | /* Set up the DPLL and any encoders state that needs to adjust or depend |
| 608 | * on the DPLL. |
| 609 | */ |
Chris Wilson | 5c3b82e | 2009-02-11 13:25:09 +0000 | [diff] [blame] | 610 | ret = !crtc_funcs->mode_set(crtc, mode, adjusted_mode, x, y, old_fb); |
| 611 | if (!ret) |
| 612 | goto done; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 613 | |
| 614 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
| 615 | |
| 616 | if (encoder->crtc != crtc) |
| 617 | continue; |
| 618 | |
| 619 | DRM_INFO("%s: set mode %s %x\n", drm_get_encoder_name(encoder), |
| 620 | mode->name, mode->base.id); |
| 621 | encoder_funcs = encoder->helper_private; |
| 622 | encoder_funcs->mode_set(encoder, mode, adjusted_mode); |
| 623 | } |
| 624 | |
| 625 | /* Now enable the clocks, plane, pipe, and connectors that we set up. */ |
| 626 | crtc_funcs->commit(crtc); |
| 627 | |
| 628 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
| 629 | |
| 630 | if (encoder->crtc != crtc) |
| 631 | continue; |
| 632 | |
| 633 | encoder_funcs = encoder->helper_private; |
| 634 | encoder_funcs->commit(encoder); |
| 635 | |
| 636 | } |
| 637 | |
| 638 | /* XXX free adjustedmode */ |
| 639 | drm_mode_destroy(dev, adjusted_mode); |
| 640 | /* FIXME: add subpixel order */ |
| 641 | done: |
| 642 | if (!ret) { |
| 643 | crtc->mode = saved_mode; |
| 644 | crtc->x = saved_x; |
| 645 | crtc->y = saved_y; |
| 646 | } |
| 647 | |
| 648 | return ret; |
| 649 | } |
| 650 | EXPORT_SYMBOL(drm_crtc_helper_set_mode); |
| 651 | |
| 652 | |
| 653 | /** |
| 654 | * drm_crtc_helper_set_config - set a new config from userspace |
| 655 | * @crtc: CRTC to setup |
| 656 | * @crtc_info: user provided configuration |
| 657 | * @new_mode: new mode to set |
| 658 | * @connector_set: set of connectors for the new config |
| 659 | * @fb: new framebuffer |
| 660 | * |
| 661 | * LOCKING: |
| 662 | * Caller must hold mode config lock. |
| 663 | * |
| 664 | * Setup a new configuration, provided by the user in @crtc_info, and enable |
| 665 | * it. |
| 666 | * |
| 667 | * RETURNS: |
| 668 | * Zero. (FIXME) |
| 669 | */ |
| 670 | int drm_crtc_helper_set_config(struct drm_mode_set *set) |
| 671 | { |
| 672 | struct drm_device *dev; |
| 673 | struct drm_crtc **save_crtcs, *new_crtc; |
| 674 | struct drm_encoder **save_encoders, *new_encoder; |
Jesse Barnes | 7bec756 | 2009-02-23 16:09:34 -0800 | [diff] [blame] | 675 | struct drm_framebuffer *old_fb = NULL; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 676 | bool save_enabled; |
Jesse Barnes | 712531b | 2009-01-09 13:56:14 -0800 | [diff] [blame] | 677 | bool mode_changed = false; |
| 678 | bool fb_changed = false; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 679 | struct drm_connector *connector; |
| 680 | int count = 0, ro, fail = 0; |
| 681 | struct drm_crtc_helper_funcs *crtc_funcs; |
| 682 | int ret = 0; |
| 683 | |
| 684 | DRM_DEBUG("\n"); |
| 685 | |
| 686 | if (!set) |
| 687 | return -EINVAL; |
| 688 | |
| 689 | if (!set->crtc) |
| 690 | return -EINVAL; |
| 691 | |
| 692 | if (!set->crtc->helper_private) |
| 693 | return -EINVAL; |
| 694 | |
| 695 | crtc_funcs = set->crtc->helper_private; |
| 696 | |
| 697 | DRM_DEBUG("crtc: %p %d fb: %p connectors: %p num_connectors: %d (x, y) (%i, %i)\n", |
| 698 | set->crtc, set->crtc->base.id, set->fb, set->connectors, |
| 699 | (int)set->num_connectors, set->x, set->y); |
| 700 | |
| 701 | dev = set->crtc->dev; |
| 702 | |
| 703 | /* save previous config */ |
| 704 | save_enabled = set->crtc->enabled; |
| 705 | |
Jesse Barnes | 712531b | 2009-01-09 13:56:14 -0800 | [diff] [blame] | 706 | /* |
| 707 | * We do mode_config.num_connectors here since we'll look at the |
| 708 | * CRTC and encoder associated with each connector later. |
| 709 | */ |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 710 | save_crtcs = kzalloc(dev->mode_config.num_connector * |
| 711 | sizeof(struct drm_crtc *), GFP_KERNEL); |
| 712 | if (!save_crtcs) |
| 713 | return -ENOMEM; |
| 714 | |
| 715 | save_encoders = kzalloc(dev->mode_config.num_connector * |
| 716 | sizeof(struct drm_encoders *), GFP_KERNEL); |
| 717 | if (!save_encoders) { |
| 718 | kfree(save_crtcs); |
| 719 | return -ENOMEM; |
| 720 | } |
| 721 | |
| 722 | /* We should be able to check here if the fb has the same properties |
| 723 | * and then just flip_or_move it */ |
| 724 | if (set->crtc->fb != set->fb) { |
Jesse Barnes | 712531b | 2009-01-09 13:56:14 -0800 | [diff] [blame] | 725 | /* If we have no fb then treat it as a full mode set */ |
Jesse Barnes | 7bec756 | 2009-02-23 16:09:34 -0800 | [diff] [blame] | 726 | if (set->crtc->fb == NULL) { |
| 727 | DRM_DEBUG("crtc has no fb, full mode set\n"); |
Jesse Barnes | 712531b | 2009-01-09 13:56:14 -0800 | [diff] [blame] | 728 | mode_changed = true; |
Jesse Barnes | 7bec756 | 2009-02-23 16:09:34 -0800 | [diff] [blame] | 729 | } else if ((set->fb->bits_per_pixel != |
Jesse Barnes | 712531b | 2009-01-09 13:56:14 -0800 | [diff] [blame] | 730 | set->crtc->fb->bits_per_pixel) || |
| 731 | set->fb->depth != set->crtc->fb->depth) |
| 732 | fb_changed = true; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 733 | else |
Jesse Barnes | 712531b | 2009-01-09 13:56:14 -0800 | [diff] [blame] | 734 | fb_changed = true; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 735 | } |
| 736 | |
| 737 | if (set->x != set->crtc->x || set->y != set->crtc->y) |
Jesse Barnes | 712531b | 2009-01-09 13:56:14 -0800 | [diff] [blame] | 738 | fb_changed = true; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 739 | |
| 740 | if (set->mode && !drm_mode_equal(set->mode, &set->crtc->mode)) { |
Jesse Barnes | 7bec756 | 2009-02-23 16:09:34 -0800 | [diff] [blame] | 741 | DRM_DEBUG("modes are different, full mode set\n"); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 742 | drm_mode_debug_printmodeline(&set->crtc->mode); |
| 743 | drm_mode_debug_printmodeline(set->mode); |
Jesse Barnes | 712531b | 2009-01-09 13:56:14 -0800 | [diff] [blame] | 744 | mode_changed = true; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 745 | } |
| 746 | |
| 747 | /* a) traverse passed in connector list and get encoders for them */ |
| 748 | count = 0; |
| 749 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
| 750 | struct drm_connector_helper_funcs *connector_funcs = |
| 751 | connector->helper_private; |
| 752 | save_encoders[count++] = connector->encoder; |
| 753 | new_encoder = connector->encoder; |
| 754 | for (ro = 0; ro < set->num_connectors; ro++) { |
| 755 | if (set->connectors[ro] == connector) { |
| 756 | new_encoder = connector_funcs->best_encoder(connector); |
| 757 | /* if we can't get an encoder for a connector |
| 758 | we are setting now - then fail */ |
| 759 | if (new_encoder == NULL) |
| 760 | /* don't break so fail path works correct */ |
| 761 | fail = 1; |
| 762 | break; |
| 763 | } |
| 764 | } |
| 765 | |
| 766 | if (new_encoder != connector->encoder) { |
Jesse Barnes | 7bec756 | 2009-02-23 16:09:34 -0800 | [diff] [blame] | 767 | DRM_DEBUG("encoder changed, full mode switch\n"); |
Jesse Barnes | 712531b | 2009-01-09 13:56:14 -0800 | [diff] [blame] | 768 | mode_changed = true; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 769 | connector->encoder = new_encoder; |
| 770 | } |
| 771 | } |
| 772 | |
| 773 | if (fail) { |
| 774 | ret = -EINVAL; |
| 775 | goto fail_no_encoder; |
| 776 | } |
| 777 | |
| 778 | count = 0; |
| 779 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
| 780 | if (!connector->encoder) |
| 781 | continue; |
| 782 | |
| 783 | save_crtcs[count++] = connector->encoder->crtc; |
| 784 | |
| 785 | if (connector->encoder->crtc == set->crtc) |
| 786 | new_crtc = NULL; |
| 787 | else |
| 788 | new_crtc = connector->encoder->crtc; |
| 789 | |
| 790 | for (ro = 0; ro < set->num_connectors; ro++) { |
| 791 | if (set->connectors[ro] == connector) |
| 792 | new_crtc = set->crtc; |
| 793 | } |
Jesse Barnes | 7bec756 | 2009-02-23 16:09:34 -0800 | [diff] [blame] | 794 | |
| 795 | /* Make sure the new CRTC will work with the encoder */ |
| 796 | if (new_crtc && |
| 797 | !drm_encoder_crtc_ok(connector->encoder, new_crtc)) { |
| 798 | ret = -EINVAL; |
| 799 | goto fail_set_mode; |
| 800 | } |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 801 | if (new_crtc != connector->encoder->crtc) { |
Jesse Barnes | 7bec756 | 2009-02-23 16:09:34 -0800 | [diff] [blame] | 802 | DRM_DEBUG("crtc changed, full mode switch\n"); |
Jesse Barnes | 712531b | 2009-01-09 13:56:14 -0800 | [diff] [blame] | 803 | mode_changed = true; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 804 | connector->encoder->crtc = new_crtc; |
| 805 | } |
Jesse Barnes | 7bec756 | 2009-02-23 16:09:34 -0800 | [diff] [blame] | 806 | DRM_DEBUG("setting connector %d crtc to %p\n", |
| 807 | connector->base.id, new_crtc); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 808 | } |
| 809 | |
| 810 | /* mode_set_base is not a required function */ |
Jesse Barnes | 712531b | 2009-01-09 13:56:14 -0800 | [diff] [blame] | 811 | if (fb_changed && !crtc_funcs->mode_set_base) |
| 812 | mode_changed = true; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 813 | |
Jesse Barnes | 712531b | 2009-01-09 13:56:14 -0800 | [diff] [blame] | 814 | if (mode_changed) { |
Kristian Høgsberg | 3c4fdcf | 2008-12-17 22:14:46 -0500 | [diff] [blame] | 815 | old_fb = set->crtc->fb; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 816 | set->crtc->fb = set->fb; |
| 817 | set->crtc->enabled = (set->mode != NULL); |
| 818 | if (set->mode != NULL) { |
| 819 | DRM_DEBUG("attempting to set mode from userspace\n"); |
| 820 | drm_mode_debug_printmodeline(set->mode); |
| 821 | if (!drm_crtc_helper_set_mode(set->crtc, set->mode, |
Kristian Høgsberg | 3c4fdcf | 2008-12-17 22:14:46 -0500 | [diff] [blame] | 822 | set->x, set->y, |
| 823 | old_fb)) { |
Chris Wilson | 5c3b82e | 2009-02-11 13:25:09 +0000 | [diff] [blame] | 824 | DRM_ERROR("failed to set mode on crtc %p\n", |
| 825 | set->crtc); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 826 | ret = -EINVAL; |
| 827 | goto fail_set_mode; |
| 828 | } |
| 829 | /* TODO are these needed? */ |
| 830 | set->crtc->desired_x = set->x; |
| 831 | set->crtc->desired_y = set->y; |
| 832 | set->crtc->desired_mode = set->mode; |
| 833 | } |
| 834 | drm_helper_disable_unused_functions(dev); |
Jesse Barnes | 712531b | 2009-01-09 13:56:14 -0800 | [diff] [blame] | 835 | } else if (fb_changed) { |
Kristian Høgsberg | 3c4fdcf | 2008-12-17 22:14:46 -0500 | [diff] [blame] | 836 | old_fb = set->crtc->fb; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 837 | if (set->crtc->fb != set->fb) |
| 838 | set->crtc->fb = set->fb; |
Chris Wilson | 5c3b82e | 2009-02-11 13:25:09 +0000 | [diff] [blame] | 839 | ret = crtc_funcs->mode_set_base(set->crtc, |
| 840 | set->x, set->y, old_fb); |
| 841 | if (ret != 0) |
| 842 | goto fail_set_mode; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 843 | } |
| 844 | |
| 845 | kfree(save_encoders); |
| 846 | kfree(save_crtcs); |
| 847 | return 0; |
| 848 | |
| 849 | fail_set_mode: |
| 850 | set->crtc->enabled = save_enabled; |
Jesse Barnes | 7bec756 | 2009-02-23 16:09:34 -0800 | [diff] [blame] | 851 | set->crtc->fb = old_fb; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 852 | count = 0; |
Chris Wilson | e62fb64 | 2009-02-11 16:39:21 +0000 | [diff] [blame] | 853 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
| 854 | if (!connector->encoder) |
| 855 | continue; |
| 856 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 857 | connector->encoder->crtc = save_crtcs[count++]; |
Chris Wilson | e62fb64 | 2009-02-11 16:39:21 +0000 | [diff] [blame] | 858 | } |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 859 | fail_no_encoder: |
| 860 | kfree(save_crtcs); |
| 861 | count = 0; |
| 862 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
| 863 | connector->encoder = save_encoders[count++]; |
| 864 | } |
| 865 | kfree(save_encoders); |
| 866 | return ret; |
| 867 | } |
| 868 | EXPORT_SYMBOL(drm_crtc_helper_set_config); |
| 869 | |
| 870 | bool drm_helper_plugged_event(struct drm_device *dev) |
| 871 | { |
| 872 | DRM_DEBUG("\n"); |
| 873 | |
| 874 | drm_helper_probe_connector_modes(dev, dev->mode_config.max_width, |
| 875 | dev->mode_config.max_height); |
| 876 | |
| 877 | drm_setup_crtcs(dev); |
| 878 | |
| 879 | /* alert the driver fb layer */ |
| 880 | dev->mode_config.funcs->fb_changed(dev); |
| 881 | |
| 882 | /* FIXME: send hotplug event */ |
| 883 | return true; |
| 884 | } |
| 885 | /** |
| 886 | * drm_initial_config - setup a sane initial connector configuration |
| 887 | * @dev: DRM device |
| 888 | * @can_grow: this configuration is growable |
| 889 | * |
| 890 | * LOCKING: |
| 891 | * Called at init time, must take mode config lock. |
| 892 | * |
| 893 | * Scan the CRTCs and connectors and try to put together an initial setup. |
| 894 | * At the moment, this is a cloned configuration across all heads with |
| 895 | * a new framebuffer object as the backing store. |
| 896 | * |
| 897 | * RETURNS: |
| 898 | * Zero if everything went ok, nonzero otherwise. |
| 899 | */ |
| 900 | bool drm_helper_initial_config(struct drm_device *dev, bool can_grow) |
| 901 | { |
Jesse Barnes | 40a518d | 2009-01-12 12:05:32 -0800 | [diff] [blame] | 902 | struct drm_connector *connector; |
| 903 | int count = 0; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 904 | |
Jesse Barnes | 40a518d | 2009-01-12 12:05:32 -0800 | [diff] [blame] | 905 | count = drm_helper_probe_connector_modes(dev, |
| 906 | dev->mode_config.max_width, |
| 907 | dev->mode_config.max_height); |
| 908 | |
| 909 | /* |
| 910 | * None of the available connectors had any modes, so add some |
| 911 | * and try to light them up anyway |
| 912 | */ |
| 913 | if (!count) { |
| 914 | DRM_ERROR("connectors have no modes, using standard modes\n"); |
| 915 | list_for_each_entry(connector, |
| 916 | &dev->mode_config.connector_list, |
| 917 | head) |
| 918 | drm_helper_add_std_modes(dev, connector); |
| 919 | } |
| 920 | |
| 921 | drm_setup_crtcs(dev); |
| 922 | |
| 923 | /* alert the driver fb layer */ |
| 924 | dev->mode_config.funcs->fb_changed(dev); |
| 925 | |
| 926 | return 0; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 927 | } |
| 928 | EXPORT_SYMBOL(drm_helper_initial_config); |
| 929 | |
| 930 | /** |
| 931 | * drm_hotplug_stage_two |
| 932 | * @dev DRM device |
| 933 | * @connector hotpluged connector |
| 934 | * |
| 935 | * LOCKING. |
| 936 | * Caller must hold mode config lock, function might grab struct lock. |
| 937 | * |
| 938 | * Stage two of a hotplug. |
| 939 | * |
| 940 | * RETURNS: |
| 941 | * Zero on success, errno on failure. |
| 942 | */ |
| 943 | int drm_helper_hotplug_stage_two(struct drm_device *dev) |
| 944 | { |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 945 | drm_helper_plugged_event(dev); |
| 946 | |
| 947 | return 0; |
| 948 | } |
| 949 | EXPORT_SYMBOL(drm_helper_hotplug_stage_two); |
| 950 | |
| 951 | int drm_helper_mode_fill_fb_struct(struct drm_framebuffer *fb, |
| 952 | struct drm_mode_fb_cmd *mode_cmd) |
| 953 | { |
| 954 | fb->width = mode_cmd->width; |
| 955 | fb->height = mode_cmd->height; |
| 956 | fb->pitch = mode_cmd->pitch; |
| 957 | fb->bits_per_pixel = mode_cmd->bpp; |
| 958 | fb->depth = mode_cmd->depth; |
| 959 | |
| 960 | return 0; |
| 961 | } |
| 962 | EXPORT_SYMBOL(drm_helper_mode_fill_fb_struct); |
| 963 | |
| 964 | int drm_helper_resume_force_mode(struct drm_device *dev) |
| 965 | { |
| 966 | struct drm_crtc *crtc; |
| 967 | int ret; |
| 968 | |
| 969 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
| 970 | |
| 971 | if (!crtc->enabled) |
| 972 | continue; |
| 973 | |
Kristian Høgsberg | 3c4fdcf | 2008-12-17 22:14:46 -0500 | [diff] [blame] | 974 | ret = drm_crtc_helper_set_mode(crtc, &crtc->mode, |
| 975 | crtc->x, crtc->y, crtc->fb); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 976 | |
| 977 | if (ret == false) |
| 978 | DRM_ERROR("failed to set mode on crtc %p\n", crtc); |
| 979 | } |
| 980 | return 0; |
| 981 | } |
| 982 | EXPORT_SYMBOL(drm_helper_resume_force_mode); |