1 /* 2 * Copyright 2007-8 Advanced Micro Devices, Inc. 3 * Copyright 2008 Red Hat Inc. 4 * 5 * Permission is hereby granted, free of charge, to any person obtaining a 6 * copy of this software and associated documentation files (the "Software"), 7 * to deal in the Software without restriction, including without limitation 8 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 9 * and/or sell copies of the Software, and to permit persons to whom the 10 * Software is furnished to do so, subject to the following conditions: 11 * 12 * The above copyright notice and this permission notice shall be included in 13 * all copies or substantial portions of the Software. 14 * 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 18 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 19 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 20 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 21 * OTHER DEALINGS IN THE SOFTWARE. 22 * 23 * Authors: Dave Airlie 24 * Alex Deucher 25 */ 26 #include <drm/drmP.h> 27 #include <drm/radeon_drm.h> 28 #include "radeon.h" 29 30 #include "atom.h" 31 #include <asm/div64.h> 32 33 #include <linux/pm_runtime.h> 34 #include <drm/drm_crtc_helper.h> 35 #include <drm/drm_edid.h> 36 37 #include <linux/gcd.h> 38 39 static void avivo_crtc_load_lut(struct drm_crtc *crtc) 40 { 41 struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc); 42 struct drm_device *dev = crtc->dev; 43 struct radeon_device *rdev = dev->dev_private; 44 int i; 45 46 DRM_DEBUG_KMS("%d\n", radeon_crtc->crtc_id); 47 WREG32(AVIVO_DC_LUTA_CONTROL + radeon_crtc->crtc_offset, 0); 48 49 WREG32(AVIVO_DC_LUTA_BLACK_OFFSET_BLUE + radeon_crtc->crtc_offset, 0); 50 WREG32(AVIVO_DC_LUTA_BLACK_OFFSET_GREEN + radeon_crtc->crtc_offset, 0); 51 WREG32(AVIVO_DC_LUTA_BLACK_OFFSET_RED + radeon_crtc->crtc_offset, 0); 52 53 WREG32(AVIVO_DC_LUTA_WHITE_OFFSET_BLUE + radeon_crtc->crtc_offset, 0xffff); 54 WREG32(AVIVO_DC_LUTA_WHITE_OFFSET_GREEN + radeon_crtc->crtc_offset, 0xffff); 55 WREG32(AVIVO_DC_LUTA_WHITE_OFFSET_RED + radeon_crtc->crtc_offset, 0xffff); 56 57 WREG32(AVIVO_DC_LUT_RW_SELECT, radeon_crtc->crtc_id); 58 WREG32(AVIVO_DC_LUT_RW_MODE, 0); 59 WREG32(AVIVO_DC_LUT_WRITE_EN_MASK, 0x0000003f); 60 61 WREG8(AVIVO_DC_LUT_RW_INDEX, 0); 62 for (i = 0; i < 256; i++) { 63 WREG32(AVIVO_DC_LUT_30_COLOR, 64 (radeon_crtc->lut_r[i] << 20) | 65 (radeon_crtc->lut_g[i] << 10) | 66 (radeon_crtc->lut_b[i] << 0)); 67 } 68 69 WREG32(AVIVO_D1GRPH_LUT_SEL + radeon_crtc->crtc_offset, radeon_crtc->crtc_id); 70 } 71 72 static void dce4_crtc_load_lut(struct drm_crtc *crtc) 73 { 74 struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc); 75 struct drm_device *dev = crtc->dev; 76 struct radeon_device *rdev = dev->dev_private; 77 int i; 78 79 DRM_DEBUG_KMS("%d\n", radeon_crtc->crtc_id); 80 WREG32(EVERGREEN_DC_LUT_CONTROL + radeon_crtc->crtc_offset, 0); 81 82 WREG32(EVERGREEN_DC_LUT_BLACK_OFFSET_BLUE + radeon_crtc->crtc_offset, 0); 83 WREG32(EVERGREEN_DC_LUT_BLACK_OFFSET_GREEN + radeon_crtc->crtc_offset, 0); 84 WREG32(EVERGREEN_DC_LUT_BLACK_OFFSET_RED + radeon_crtc->crtc_offset, 0); 85 86 WREG32(EVERGREEN_DC_LUT_WHITE_OFFSET_BLUE + radeon_crtc->crtc_offset, 0xffff); 87 WREG32(EVERGREEN_DC_LUT_WHITE_OFFSET_GREEN + radeon_crtc->crtc_offset, 0xffff); 88 WREG32(EVERGREEN_DC_LUT_WHITE_OFFSET_RED + radeon_crtc->crtc_offset, 0xffff); 89 90 WREG32(EVERGREEN_DC_LUT_RW_MODE + radeon_crtc->crtc_offset, 0); 91 WREG32(EVERGREEN_DC_LUT_WRITE_EN_MASK + radeon_crtc->crtc_offset, 0x00000007); 92 93 WREG32(EVERGREEN_DC_LUT_RW_INDEX + radeon_crtc->crtc_offset, 0); 94 for (i = 0; i < 256; i++) { 95 WREG32(EVERGREEN_DC_LUT_30_COLOR + radeon_crtc->crtc_offset, 96 (radeon_crtc->lut_r[i] << 20) | 97 (radeon_crtc->lut_g[i] << 10) | 98 (radeon_crtc->lut_b[i] << 0)); 99 } 100 } 101 102 static void dce5_crtc_load_lut(struct drm_crtc *crtc) 103 { 104 struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc); 105 struct drm_device *dev = crtc->dev; 106 struct radeon_device *rdev = dev->dev_private; 107 int i; 108 109 DRM_DEBUG_KMS("%d\n", radeon_crtc->crtc_id); 110 111 WREG32(NI_INPUT_CSC_CONTROL + radeon_crtc->crtc_offset, 112 (NI_INPUT_CSC_GRPH_MODE(NI_INPUT_CSC_BYPASS) | 113 NI_INPUT_CSC_OVL_MODE(NI_INPUT_CSC_BYPASS))); 114 WREG32(NI_PRESCALE_GRPH_CONTROL + radeon_crtc->crtc_offset, 115 NI_GRPH_PRESCALE_BYPASS); 116 WREG32(NI_PRESCALE_OVL_CONTROL + radeon_crtc->crtc_offset, 117 NI_OVL_PRESCALE_BYPASS); 118 WREG32(NI_INPUT_GAMMA_CONTROL + radeon_crtc->crtc_offset, 119 (NI_GRPH_INPUT_GAMMA_MODE(NI_INPUT_GAMMA_USE_LUT) | 120 NI_OVL_INPUT_GAMMA_MODE(NI_INPUT_GAMMA_USE_LUT))); 121 122 WREG32(EVERGREEN_DC_LUT_CONTROL + radeon_crtc->crtc_offset, 0); 123 124 WREG32(EVERGREEN_DC_LUT_BLACK_OFFSET_BLUE + radeon_crtc->crtc_offset, 0); 125 WREG32(EVERGREEN_DC_LUT_BLACK_OFFSET_GREEN + radeon_crtc->crtc_offset, 0); 126 WREG32(EVERGREEN_DC_LUT_BLACK_OFFSET_RED + radeon_crtc->crtc_offset, 0); 127 128 WREG32(EVERGREEN_DC_LUT_WHITE_OFFSET_BLUE + radeon_crtc->crtc_offset, 0xffff); 129 WREG32(EVERGREEN_DC_LUT_WHITE_OFFSET_GREEN + radeon_crtc->crtc_offset, 0xffff); 130 WREG32(EVERGREEN_DC_LUT_WHITE_OFFSET_RED + radeon_crtc->crtc_offset, 0xffff); 131 132 WREG32(EVERGREEN_DC_LUT_RW_MODE + radeon_crtc->crtc_offset, 0); 133 WREG32(EVERGREEN_DC_LUT_WRITE_EN_MASK + radeon_crtc->crtc_offset, 0x00000007); 134 135 WREG32(EVERGREEN_DC_LUT_RW_INDEX + radeon_crtc->crtc_offset, 0); 136 for (i = 0; i < 256; i++) { 137 WREG32(EVERGREEN_DC_LUT_30_COLOR + radeon_crtc->crtc_offset, 138 (radeon_crtc->lut_r[i] << 20) | 139 (radeon_crtc->lut_g[i] << 10) | 140 (radeon_crtc->lut_b[i] << 0)); 141 } 142 143 WREG32(NI_DEGAMMA_CONTROL + radeon_crtc->crtc_offset, 144 (NI_GRPH_DEGAMMA_MODE(NI_DEGAMMA_BYPASS) | 145 NI_OVL_DEGAMMA_MODE(NI_DEGAMMA_BYPASS) | 146 NI_ICON_DEGAMMA_MODE(NI_DEGAMMA_BYPASS) | 147 NI_CURSOR_DEGAMMA_MODE(NI_DEGAMMA_BYPASS))); 148 WREG32(NI_GAMUT_REMAP_CONTROL + radeon_crtc->crtc_offset, 149 (NI_GRPH_GAMUT_REMAP_MODE(NI_GAMUT_REMAP_BYPASS) | 150 NI_OVL_GAMUT_REMAP_MODE(NI_GAMUT_REMAP_BYPASS))); 151 WREG32(NI_REGAMMA_CONTROL + radeon_crtc->crtc_offset, 152 (NI_GRPH_REGAMMA_MODE(NI_REGAMMA_BYPASS) | 153 NI_OVL_REGAMMA_MODE(NI_REGAMMA_BYPASS))); 154 WREG32(NI_OUTPUT_CSC_CONTROL + radeon_crtc->crtc_offset, 155 (NI_OUTPUT_CSC_GRPH_MODE(NI_OUTPUT_CSC_BYPASS) | 156 NI_OUTPUT_CSC_OVL_MODE(NI_OUTPUT_CSC_BYPASS))); 157 /* XXX match this to the depth of the crtc fmt block, move to modeset? */ 158 WREG32(0x6940 + radeon_crtc->crtc_offset, 0); 159 if (ASIC_IS_DCE8(rdev)) { 160 /* XXX this only needs to be programmed once per crtc at startup, 161 * not sure where the best place for it is 162 */ 163 WREG32(CIK_ALPHA_CONTROL + radeon_crtc->crtc_offset, 164 CIK_CURSOR_ALPHA_BLND_ENA); 165 } 166 } 167 168 static void legacy_crtc_load_lut(struct drm_crtc *crtc) 169 { 170 struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc); 171 struct drm_device *dev = crtc->dev; 172 struct radeon_device *rdev = dev->dev_private; 173 int i; 174 uint32_t dac2_cntl; 175 176 dac2_cntl = RREG32(RADEON_DAC_CNTL2); 177 if (radeon_crtc->crtc_id == 0) 178 dac2_cntl &= (uint32_t)~RADEON_DAC2_PALETTE_ACC_CTL; 179 else 180 dac2_cntl |= RADEON_DAC2_PALETTE_ACC_CTL; 181 WREG32(RADEON_DAC_CNTL2, dac2_cntl); 182 183 WREG8(RADEON_PALETTE_INDEX, 0); 184 for (i = 0; i < 256; i++) { 185 WREG32(RADEON_PALETTE_30_DATA, 186 (radeon_crtc->lut_r[i] << 20) | 187 (radeon_crtc->lut_g[i] << 10) | 188 (radeon_crtc->lut_b[i] << 0)); 189 } 190 } 191 192 void radeon_crtc_load_lut(struct drm_crtc *crtc) 193 { 194 struct drm_device *dev = crtc->dev; 195 struct radeon_device *rdev = dev->dev_private; 196 197 if (!crtc->enabled) 198 return; 199 200 if (ASIC_IS_DCE5(rdev)) 201 dce5_crtc_load_lut(crtc); 202 else if (ASIC_IS_DCE4(rdev)) 203 dce4_crtc_load_lut(crtc); 204 else if (ASIC_IS_AVIVO(rdev)) 205 avivo_crtc_load_lut(crtc); 206 else 207 legacy_crtc_load_lut(crtc); 208 } 209 210 /** Sets the color ramps on behalf of fbcon */ 211 void radeon_crtc_fb_gamma_set(struct drm_crtc *crtc, u16 red, u16 green, 212 u16 blue, int regno) 213 { 214 struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc); 215 216 radeon_crtc->lut_r[regno] = red >> 6; 217 radeon_crtc->lut_g[regno] = green >> 6; 218 radeon_crtc->lut_b[regno] = blue >> 6; 219 } 220 221 /** Gets the color ramps on behalf of fbcon */ 222 void radeon_crtc_fb_gamma_get(struct drm_crtc *crtc, u16 *red, u16 *green, 223 u16 *blue, int regno) 224 { 225 struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc); 226 227 *red = radeon_crtc->lut_r[regno] << 6; 228 *green = radeon_crtc->lut_g[regno] << 6; 229 *blue = radeon_crtc->lut_b[regno] << 6; 230 } 231 232 static void radeon_crtc_gamma_set(struct drm_crtc *crtc, u16 *red, u16 *green, 233 u16 *blue, uint32_t start, uint32_t size) 234 { 235 struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc); 236 int end = (start + size > 256) ? 256 : start + size, i; 237 238 /* userspace palettes are always correct as is */ 239 for (i = start; i < end; i++) { 240 radeon_crtc->lut_r[i] = red[i] >> 6; 241 radeon_crtc->lut_g[i] = green[i] >> 6; 242 radeon_crtc->lut_b[i] = blue[i] >> 6; 243 } 244 radeon_crtc_load_lut(crtc); 245 } 246 247 static void radeon_crtc_destroy(struct drm_crtc *crtc) 248 { 249 struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc); 250 251 drm_crtc_cleanup(crtc); 252 kfree(radeon_crtc); 253 } 254 255 /* 256 * Handle unpin events outside the interrupt handler proper. 257 */ 258 static void radeon_unpin_work_func(struct work_struct *__work) 259 { 260 struct radeon_unpin_work *work = 261 container_of(__work, struct radeon_unpin_work, work); 262 int r; 263 264 /* unpin of the old buffer */ 265 r = radeon_bo_reserve(work->old_rbo, false); 266 if (likely(r == 0)) { 267 r = radeon_bo_unpin(work->old_rbo); 268 if (unlikely(r != 0)) { 269 DRM_ERROR("failed to unpin buffer after flip\n"); 270 } 271 radeon_bo_unreserve(work->old_rbo); 272 } else 273 DRM_ERROR("failed to reserve buffer after flip\n"); 274 275 drm_gem_object_unreference_unlocked(&work->old_rbo->gem_base); 276 kfree(work); 277 } 278 279 void radeon_crtc_handle_flip(struct radeon_device *rdev, int crtc_id) 280 { 281 struct radeon_crtc *radeon_crtc = rdev->mode_info.crtcs[crtc_id]; 282 struct radeon_unpin_work *work; 283 unsigned long flags; 284 u32 update_pending; 285 int vpos, hpos; 286 287 spin_lock_irqsave(&rdev->ddev->event_lock, flags); 288 work = radeon_crtc->unpin_work; 289 if (work == NULL || 290 (work->fence && !radeon_fence_signaled(work->fence))) { 291 spin_unlock_irqrestore(&rdev->ddev->event_lock, flags); 292 return; 293 } 294 /* New pageflip, or just completion of a previous one? */ 295 if (!radeon_crtc->deferred_flip_completion) { 296 /* do the flip (mmio) */ 297 update_pending = radeon_page_flip(rdev, crtc_id, work->new_crtc_base); 298 } else { 299 /* This is just a completion of a flip queued in crtc 300 * at last invocation. Make sure we go directly to 301 * completion routine. 302 */ 303 update_pending = 0; 304 radeon_crtc->deferred_flip_completion = 0; 305 } 306 307 /* Has the pageflip already completed in crtc, or is it certain 308 * to complete in this vblank? 309 */ 310 if (update_pending && 311 (DRM_SCANOUTPOS_VALID & radeon_get_crtc_scanoutpos(rdev->ddev, crtc_id, 0, 312 &vpos, &hpos, NULL, NULL)) && 313 ((vpos >= (99 * rdev->mode_info.crtcs[crtc_id]->base.hwmode.crtc_vdisplay)/100) || 314 (vpos < 0 && !ASIC_IS_AVIVO(rdev)))) { 315 /* crtc didn't flip in this target vblank interval, 316 * but flip is pending in crtc. Based on the current 317 * scanout position we know that the current frame is 318 * (nearly) complete and the flip will (likely) 319 * complete before the start of the next frame. 320 */ 321 update_pending = 0; 322 } 323 if (update_pending) { 324 /* crtc didn't flip in this target vblank interval, 325 * but flip is pending in crtc. It will complete it 326 * in next vblank interval, so complete the flip at 327 * next vblank irq. 328 */ 329 radeon_crtc->deferred_flip_completion = 1; 330 spin_unlock_irqrestore(&rdev->ddev->event_lock, flags); 331 return; 332 } 333 334 /* Pageflip (will be) certainly completed in this vblank. Clean up. */ 335 radeon_crtc->unpin_work = NULL; 336 337 /* wakeup userspace */ 338 if (work->event) 339 drm_send_vblank_event(rdev->ddev, crtc_id, work->event); 340 341 spin_unlock_irqrestore(&rdev->ddev->event_lock, flags); 342 343 drm_vblank_put(rdev->ddev, radeon_crtc->crtc_id); 344 radeon_fence_unref(&work->fence); 345 radeon_post_page_flip(work->rdev, work->crtc_id); 346 schedule_work(&work->work); 347 } 348 349 static int radeon_crtc_page_flip(struct drm_crtc *crtc, 350 struct drm_framebuffer *fb, 351 struct drm_pending_vblank_event *event, 352 uint32_t page_flip_flags) 353 { 354 struct drm_device *dev = crtc->dev; 355 struct radeon_device *rdev = dev->dev_private; 356 struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc); 357 struct radeon_framebuffer *old_radeon_fb; 358 struct radeon_framebuffer *new_radeon_fb; 359 struct drm_gem_object *obj; 360 struct radeon_bo *rbo; 361 struct radeon_unpin_work *work; 362 unsigned long flags; 363 u32 tiling_flags, pitch_pixels; 364 u64 base; 365 int r; 366 367 work = kzalloc(sizeof *work, GFP_KERNEL); 368 if (work == NULL) 369 return -ENOMEM; 370 371 work->event = event; 372 work->rdev = rdev; 373 work->crtc_id = radeon_crtc->crtc_id; 374 old_radeon_fb = to_radeon_framebuffer(crtc->primary->fb); 375 new_radeon_fb = to_radeon_framebuffer(fb); 376 /* schedule unpin of the old buffer */ 377 obj = old_radeon_fb->obj; 378 /* take a reference to the old object */ 379 drm_gem_object_reference(obj); 380 rbo = gem_to_radeon_bo(obj); 381 work->old_rbo = rbo; 382 obj = new_radeon_fb->obj; 383 rbo = gem_to_radeon_bo(obj); 384 385 spin_lock(&rbo->tbo.bdev->fence_lock); 386 if (rbo->tbo.sync_obj) 387 work->fence = radeon_fence_ref(rbo->tbo.sync_obj); 388 spin_unlock(&rbo->tbo.bdev->fence_lock); 389 390 INIT_WORK(&work->work, radeon_unpin_work_func); 391 392 /* We borrow the event spin lock for protecting unpin_work */ 393 spin_lock_irqsave(&dev->event_lock, flags); 394 if (radeon_crtc->unpin_work) { 395 DRM_DEBUG_DRIVER("flip queue: crtc already busy\n"); 396 r = -EBUSY; 397 goto unlock_free; 398 } 399 radeon_crtc->unpin_work = work; 400 radeon_crtc->deferred_flip_completion = 0; 401 spin_unlock_irqrestore(&dev->event_lock, flags); 402 403 /* pin the new buffer */ 404 DRM_DEBUG_DRIVER("flip-ioctl() cur_fbo = %p, cur_bbo = %p\n", 405 work->old_rbo, rbo); 406 407 r = radeon_bo_reserve(rbo, false); 408 if (unlikely(r != 0)) { 409 DRM_ERROR("failed to reserve new rbo buffer before flip\n"); 410 goto pflip_cleanup; 411 } 412 /* Only 27 bit offset for legacy CRTC */ 413 r = radeon_bo_pin_restricted(rbo, RADEON_GEM_DOMAIN_VRAM, 414 ASIC_IS_AVIVO(rdev) ? 0 : 1 << 27, &base); 415 if (unlikely(r != 0)) { 416 radeon_bo_unreserve(rbo); 417 r = -EINVAL; 418 DRM_ERROR("failed to pin new rbo buffer before flip\n"); 419 goto pflip_cleanup; 420 } 421 radeon_bo_get_tiling_flags(rbo, &tiling_flags, NULL); 422 radeon_bo_unreserve(rbo); 423 424 if (!ASIC_IS_AVIVO(rdev)) { 425 /* crtc offset is from display base addr not FB location */ 426 base -= radeon_crtc->legacy_display_base_addr; 427 pitch_pixels = fb->pitches[0] / (fb->bits_per_pixel / 8); 428 429 if (tiling_flags & RADEON_TILING_MACRO) { 430 if (ASIC_IS_R300(rdev)) { 431 base &= ~0x7ff; 432 } else { 433 int byteshift = fb->bits_per_pixel >> 4; 434 int tile_addr = (((crtc->y >> 3) * pitch_pixels + crtc->x) >> (8 - byteshift)) << 11; 435 base += tile_addr + ((crtc->x << byteshift) % 256) + ((crtc->y % 8) << 8); 436 } 437 } else { 438 int offset = crtc->y * pitch_pixels + crtc->x; 439 switch (fb->bits_per_pixel) { 440 case 8: 441 default: 442 offset *= 1; 443 break; 444 case 15: 445 case 16: 446 offset *= 2; 447 break; 448 case 24: 449 offset *= 3; 450 break; 451 case 32: 452 offset *= 4; 453 break; 454 } 455 base += offset; 456 } 457 base &= ~7; 458 } 459 460 spin_lock_irqsave(&dev->event_lock, flags); 461 work->new_crtc_base = base; 462 spin_unlock_irqrestore(&dev->event_lock, flags); 463 464 /* update crtc fb */ 465 crtc->primary->fb = fb; 466 467 r = drm_vblank_get(dev, radeon_crtc->crtc_id); 468 if (r) { 469 DRM_ERROR("failed to get vblank before flip\n"); 470 goto pflip_cleanup1; 471 } 472 473 /* set the proper interrupt */ 474 radeon_pre_page_flip(rdev, radeon_crtc->crtc_id); 475 476 return 0; 477 478 pflip_cleanup1: 479 if (unlikely(radeon_bo_reserve(rbo, false) != 0)) { 480 DRM_ERROR("failed to reserve new rbo in error path\n"); 481 goto pflip_cleanup; 482 } 483 if (unlikely(radeon_bo_unpin(rbo) != 0)) { 484 DRM_ERROR("failed to unpin new rbo in error path\n"); 485 } 486 radeon_bo_unreserve(rbo); 487 488 pflip_cleanup: 489 spin_lock_irqsave(&dev->event_lock, flags); 490 radeon_crtc->unpin_work = NULL; 491 unlock_free: 492 spin_unlock_irqrestore(&dev->event_lock, flags); 493 drm_gem_object_unreference_unlocked(old_radeon_fb->obj); 494 radeon_fence_unref(&work->fence); 495 kfree(work); 496 497 return r; 498 } 499 500 static int 501 radeon_crtc_set_config(struct drm_mode_set *set) 502 { 503 struct drm_device *dev; 504 struct radeon_device *rdev; 505 struct drm_crtc *crtc; 506 bool active = false; 507 int ret; 508 509 if (!set || !set->crtc) 510 return -EINVAL; 511 512 dev = set->crtc->dev; 513 514 ret = pm_runtime_get_sync(dev->dev); 515 if (ret < 0) 516 return ret; 517 518 ret = drm_crtc_helper_set_config(set); 519 520 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) 521 if (crtc->enabled) 522 active = true; 523 524 pm_runtime_mark_last_busy(dev->dev); 525 526 rdev = dev->dev_private; 527 /* if we have active crtcs and we don't have a power ref, 528 take the current one */ 529 if (active && !rdev->have_disp_power_ref) { 530 rdev->have_disp_power_ref = true; 531 return ret; 532 } 533 /* if we have no active crtcs, then drop the power ref 534 we got before */ 535 if (!active && rdev->have_disp_power_ref) { 536 pm_runtime_put_autosuspend(dev->dev); 537 rdev->have_disp_power_ref = false; 538 } 539 540 /* drop the power reference we got coming in here */ 541 pm_runtime_put_autosuspend(dev->dev); 542 return ret; 543 } 544 static const struct drm_crtc_funcs radeon_crtc_funcs = { 545 .cursor_set = radeon_crtc_cursor_set, 546 .cursor_move = radeon_crtc_cursor_move, 547 .gamma_set = radeon_crtc_gamma_set, 548 .set_config = radeon_crtc_set_config, 549 .destroy = radeon_crtc_destroy, 550 .page_flip = radeon_crtc_page_flip, 551 }; 552 553 static void radeon_crtc_init(struct drm_device *dev, int index) 554 { 555 struct radeon_device *rdev = dev->dev_private; 556 struct radeon_crtc *radeon_crtc; 557 int i; 558 559 radeon_crtc = kzalloc(sizeof(struct radeon_crtc) + (RADEONFB_CONN_LIMIT * sizeof(struct drm_connector *)), GFP_KERNEL); 560 if (radeon_crtc == NULL) 561 return; 562 563 drm_crtc_init(dev, &radeon_crtc->base, &radeon_crtc_funcs); 564 565 drm_mode_crtc_set_gamma_size(&radeon_crtc->base, 256); 566 radeon_crtc->crtc_id = index; 567 rdev->mode_info.crtcs[index] = radeon_crtc; 568 569 if (rdev->family >= CHIP_BONAIRE) { 570 radeon_crtc->max_cursor_width = CIK_CURSOR_WIDTH; 571 radeon_crtc->max_cursor_height = CIK_CURSOR_HEIGHT; 572 } else { 573 radeon_crtc->max_cursor_width = CURSOR_WIDTH; 574 radeon_crtc->max_cursor_height = CURSOR_HEIGHT; 575 } 576 dev->mode_config.cursor_width = radeon_crtc->max_cursor_width; 577 dev->mode_config.cursor_height = radeon_crtc->max_cursor_height; 578 579 #if 0 580 radeon_crtc->mode_set.crtc = &radeon_crtc->base; 581 radeon_crtc->mode_set.connectors = (struct drm_connector **)(radeon_crtc + 1); 582 radeon_crtc->mode_set.num_connectors = 0; 583 #endif 584 585 for (i = 0; i < 256; i++) { 586 radeon_crtc->lut_r[i] = i << 2; 587 radeon_crtc->lut_g[i] = i << 2; 588 radeon_crtc->lut_b[i] = i << 2; 589 } 590 591 if (rdev->is_atom_bios && (ASIC_IS_AVIVO(rdev) || radeon_r4xx_atom)) 592 radeon_atombios_init_crtc(dev, radeon_crtc); 593 else 594 radeon_legacy_init_crtc(dev, radeon_crtc); 595 } 596 597 static const char *encoder_names[38] = { 598 "NONE", 599 "INTERNAL_LVDS", 600 "INTERNAL_TMDS1", 601 "INTERNAL_TMDS2", 602 "INTERNAL_DAC1", 603 "INTERNAL_DAC2", 604 "INTERNAL_SDVOA", 605 "INTERNAL_SDVOB", 606 "SI170B", 607 "CH7303", 608 "CH7301", 609 "INTERNAL_DVO1", 610 "EXTERNAL_SDVOA", 611 "EXTERNAL_SDVOB", 612 "TITFP513", 613 "INTERNAL_LVTM1", 614 "VT1623", 615 "HDMI_SI1930", 616 "HDMI_INTERNAL", 617 "INTERNAL_KLDSCP_TMDS1", 618 "INTERNAL_KLDSCP_DVO1", 619 "INTERNAL_KLDSCP_DAC1", 620 "INTERNAL_KLDSCP_DAC2", 621 "SI178", 622 "MVPU_FPGA", 623 "INTERNAL_DDI", 624 "VT1625", 625 "HDMI_SI1932", 626 "DP_AN9801", 627 "DP_DP501", 628 "INTERNAL_UNIPHY", 629 "INTERNAL_KLDSCP_LVTMA", 630 "INTERNAL_UNIPHY1", 631 "INTERNAL_UNIPHY2", 632 "NUTMEG", 633 "TRAVIS", 634 "INTERNAL_VCE", 635 "INTERNAL_UNIPHY3", 636 }; 637 638 static const char *hpd_names[6] = { 639 "HPD1", 640 "HPD2", 641 "HPD3", 642 "HPD4", 643 "HPD5", 644 "HPD6", 645 }; 646 647 static void radeon_print_display_setup(struct drm_device *dev) 648 { 649 struct drm_connector *connector; 650 struct radeon_connector *radeon_connector; 651 struct drm_encoder *encoder; 652 struct radeon_encoder *radeon_encoder; 653 uint32_t devices; 654 int i = 0; 655 656 DRM_INFO("Radeon Display Connectors\n"); 657 list_for_each_entry(connector, &dev->mode_config.connector_list, head) { 658 radeon_connector = to_radeon_connector(connector); 659 DRM_INFO("Connector %d:\n", i); 660 DRM_INFO(" %s\n", drm_get_connector_name(connector)); 661 if (radeon_connector->hpd.hpd != RADEON_HPD_NONE) 662 DRM_INFO(" %s\n", hpd_names[radeon_connector->hpd.hpd]); 663 if (radeon_connector->ddc_bus) { 664 DRM_INFO(" DDC: 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x\n", 665 radeon_connector->ddc_bus->rec.mask_clk_reg, 666 radeon_connector->ddc_bus->rec.mask_data_reg, 667 radeon_connector->ddc_bus->rec.a_clk_reg, 668 radeon_connector->ddc_bus->rec.a_data_reg, 669 radeon_connector->ddc_bus->rec.en_clk_reg, 670 radeon_connector->ddc_bus->rec.en_data_reg, 671 radeon_connector->ddc_bus->rec.y_clk_reg, 672 radeon_connector->ddc_bus->rec.y_data_reg); 673 if (radeon_connector->router.ddc_valid) 674 DRM_INFO(" DDC Router 0x%x/0x%x\n", 675 radeon_connector->router.ddc_mux_control_pin, 676 radeon_connector->router.ddc_mux_state); 677 if (radeon_connector->router.cd_valid) 678 DRM_INFO(" Clock/Data Router 0x%x/0x%x\n", 679 radeon_connector->router.cd_mux_control_pin, 680 radeon_connector->router.cd_mux_state); 681 } else { 682 if (connector->connector_type == DRM_MODE_CONNECTOR_VGA || 683 connector->connector_type == DRM_MODE_CONNECTOR_DVII || 684 connector->connector_type == DRM_MODE_CONNECTOR_DVID || 685 connector->connector_type == DRM_MODE_CONNECTOR_DVIA || 686 connector->connector_type == DRM_MODE_CONNECTOR_HDMIA || 687 connector->connector_type == DRM_MODE_CONNECTOR_HDMIB) 688 DRM_INFO(" DDC: no ddc bus - possible BIOS bug - please report to xorg-driver-ati@lists.x.org\n"); 689 } 690 DRM_INFO(" Encoders:\n"); 691 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { 692 radeon_encoder = to_radeon_encoder(encoder); 693 devices = radeon_encoder->devices & radeon_connector->devices; 694 if (devices) { 695 if (devices & ATOM_DEVICE_CRT1_SUPPORT) 696 DRM_INFO(" CRT1: %s\n", encoder_names[radeon_encoder->encoder_id]); 697 if (devices & ATOM_DEVICE_CRT2_SUPPORT) 698 DRM_INFO(" CRT2: %s\n", encoder_names[radeon_encoder->encoder_id]); 699 if (devices & ATOM_DEVICE_LCD1_SUPPORT) 700 DRM_INFO(" LCD1: %s\n", encoder_names[radeon_encoder->encoder_id]); 701 if (devices & ATOM_DEVICE_DFP1_SUPPORT) 702 DRM_INFO(" DFP1: %s\n", encoder_names[radeon_encoder->encoder_id]); 703 if (devices & ATOM_DEVICE_DFP2_SUPPORT) 704 DRM_INFO(" DFP2: %s\n", encoder_names[radeon_encoder->encoder_id]); 705 if (devices & ATOM_DEVICE_DFP3_SUPPORT) 706 DRM_INFO(" DFP3: %s\n", encoder_names[radeon_encoder->encoder_id]); 707 if (devices & ATOM_DEVICE_DFP4_SUPPORT) 708 DRM_INFO(" DFP4: %s\n", encoder_names[radeon_encoder->encoder_id]); 709 if (devices & ATOM_DEVICE_DFP5_SUPPORT) 710 DRM_INFO(" DFP5: %s\n", encoder_names[radeon_encoder->encoder_id]); 711 if (devices & ATOM_DEVICE_DFP6_SUPPORT) 712 DRM_INFO(" DFP6: %s\n", encoder_names[radeon_encoder->encoder_id]); 713 if (devices & ATOM_DEVICE_TV1_SUPPORT) 714 DRM_INFO(" TV1: %s\n", encoder_names[radeon_encoder->encoder_id]); 715 if (devices & ATOM_DEVICE_CV_SUPPORT) 716 DRM_INFO(" CV: %s\n", encoder_names[radeon_encoder->encoder_id]); 717 } 718 } 719 i++; 720 } 721 } 722 723 static bool radeon_setup_enc_conn(struct drm_device *dev) 724 { 725 struct radeon_device *rdev = dev->dev_private; 726 bool ret = false; 727 728 if (rdev->bios) { 729 if (rdev->is_atom_bios) { 730 ret = radeon_get_atom_connector_info_from_supported_devices_table(dev); 731 if (ret == false) 732 ret = radeon_get_atom_connector_info_from_object_table(dev); 733 } else { 734 ret = radeon_get_legacy_connector_info_from_bios(dev); 735 if (ret == false) 736 ret = radeon_get_legacy_connector_info_from_table(dev); 737 } 738 } else { 739 if (!ASIC_IS_AVIVO(rdev)) 740 ret = radeon_get_legacy_connector_info_from_table(dev); 741 } 742 if (ret) { 743 radeon_setup_encoder_clones(dev); 744 radeon_print_display_setup(dev); 745 } 746 747 return ret; 748 } 749 750 int radeon_ddc_get_modes(struct radeon_connector *radeon_connector) 751 { 752 struct drm_device *dev = radeon_connector->base.dev; 753 struct radeon_device *rdev = dev->dev_private; 754 int ret = 0; 755 756 /* on hw with routers, select right port */ 757 if (radeon_connector->router.ddc_valid) 758 radeon_router_select_ddc_port(radeon_connector); 759 760 if (radeon_connector_encoder_get_dp_bridge_encoder_id(&radeon_connector->base) != 761 ENCODER_OBJECT_ID_NONE) { 762 struct radeon_connector_atom_dig *dig = radeon_connector->con_priv; 763 764 if (dig->dp_i2c_bus) 765 radeon_connector->edid = drm_get_edid(&radeon_connector->base, 766 &dig->dp_i2c_bus->adapter); 767 } else if ((radeon_connector->base.connector_type == DRM_MODE_CONNECTOR_DisplayPort) || 768 (radeon_connector->base.connector_type == DRM_MODE_CONNECTOR_eDP)) { 769 struct radeon_connector_atom_dig *dig = radeon_connector->con_priv; 770 771 if ((dig->dp_sink_type == CONNECTOR_OBJECT_ID_DISPLAYPORT || 772 dig->dp_sink_type == CONNECTOR_OBJECT_ID_eDP) && dig->dp_i2c_bus) 773 radeon_connector->edid = drm_get_edid(&radeon_connector->base, 774 &dig->dp_i2c_bus->adapter); 775 else if (radeon_connector->ddc_bus && !radeon_connector->edid) 776 radeon_connector->edid = drm_get_edid(&radeon_connector->base, 777 &radeon_connector->ddc_bus->adapter); 778 } else { 779 if (radeon_connector->ddc_bus && !radeon_connector->edid) 780 radeon_connector->edid = drm_get_edid(&radeon_connector->base, 781 &radeon_connector->ddc_bus->adapter); 782 } 783 784 if (!radeon_connector->edid) { 785 if (rdev->is_atom_bios) { 786 /* some laptops provide a hardcoded edid in rom for LCDs */ 787 if (((radeon_connector->base.connector_type == DRM_MODE_CONNECTOR_LVDS) || 788 (radeon_connector->base.connector_type == DRM_MODE_CONNECTOR_eDP))) 789 radeon_connector->edid = radeon_bios_get_hardcoded_edid(rdev); 790 } else 791 /* some servers provide a hardcoded edid in rom for KVMs */ 792 radeon_connector->edid = radeon_bios_get_hardcoded_edid(rdev); 793 } 794 if (radeon_connector->edid) { 795 drm_mode_connector_update_edid_property(&radeon_connector->base, radeon_connector->edid); 796 ret = drm_add_edid_modes(&radeon_connector->base, radeon_connector->edid); 797 drm_edid_to_eld(&radeon_connector->base, radeon_connector->edid); 798 return ret; 799 } 800 drm_mode_connector_update_edid_property(&radeon_connector->base, NULL); 801 return 0; 802 } 803 804 /* avivo */ 805 806 /** 807 * avivo_reduce_ratio - fractional number reduction 808 * 809 * @nom: nominator 810 * @den: denominator 811 * @nom_min: minimum value for nominator 812 * @den_min: minimum value for denominator 813 * 814 * Find the greatest common divisor and apply it on both nominator and 815 * denominator, but make nominator and denominator are at least as large 816 * as their minimum values. 817 */ 818 static void avivo_reduce_ratio(unsigned *nom, unsigned *den, 819 unsigned nom_min, unsigned den_min) 820 { 821 unsigned tmp; 822 823 /* reduce the numbers to a simpler ratio */ 824 tmp = gcd(*nom, *den); 825 *nom /= tmp; 826 *den /= tmp; 827 828 /* make sure nominator is large enough */ 829 if (*nom < nom_min) { 830 tmp = (nom_min + *nom - 1) / *nom; 831 *nom *= tmp; 832 *den *= tmp; 833 } 834 835 /* make sure the denominator is large enough */ 836 if (*den < den_min) { 837 tmp = (den_min + *den - 1) / *den; 838 *nom *= tmp; 839 *den *= tmp; 840 } 841 } 842 843 /** 844 * radeon_compute_pll_avivo - compute PLL paramaters 845 * 846 * @pll: information about the PLL 847 * @dot_clock_p: resulting pixel clock 848 * fb_div_p: resulting feedback divider 849 * frac_fb_div_p: fractional part of the feedback divider 850 * ref_div_p: resulting reference divider 851 * post_div_p: resulting reference divider 852 * 853 * Try to calculate the PLL parameters to generate the given frequency: 854 * dot_clock = (ref_freq * feedback_div) / (ref_div * post_div) 855 */ 856 void radeon_compute_pll_avivo(struct radeon_pll *pll, 857 u32 freq, 858 u32 *dot_clock_p, 859 u32 *fb_div_p, 860 u32 *frac_fb_div_p, 861 u32 *ref_div_p, 862 u32 *post_div_p) 863 { 864 unsigned fb_div_min, fb_div_max, fb_div; 865 unsigned post_div_min, post_div_max, post_div; 866 unsigned ref_div_min, ref_div_max, ref_div; 867 unsigned post_div_best, diff_best; 868 unsigned nom, den, tmp; 869 870 /* determine allowed feedback divider range */ 871 fb_div_min = pll->min_feedback_div; 872 fb_div_max = pll->max_feedback_div; 873 874 if (pll->flags & RADEON_PLL_USE_FRAC_FB_DIV) { 875 fb_div_min *= 10; 876 fb_div_max *= 10; 877 } 878 879 /* determine allowed ref divider range */ 880 if (pll->flags & RADEON_PLL_USE_REF_DIV) 881 ref_div_min = pll->reference_div; 882 else 883 ref_div_min = pll->min_ref_div; 884 ref_div_max = pll->max_ref_div; 885 886 /* determine allowed post divider range */ 887 if (pll->flags & RADEON_PLL_USE_POST_DIV) { 888 post_div_min = pll->post_div; 889 post_div_max = pll->post_div; 890 } else { 891 unsigned target_clock = freq / 10; 892 unsigned vco_min, vco_max; 893 894 if (pll->flags & RADEON_PLL_IS_LCD) { 895 vco_min = pll->lcd_pll_out_min; 896 vco_max = pll->lcd_pll_out_max; 897 } else { 898 vco_min = pll->pll_out_min; 899 vco_max = pll->pll_out_max; 900 } 901 902 post_div_min = vco_min / target_clock; 903 if ((target_clock * post_div_min) < vco_min) 904 ++post_div_min; 905 if (post_div_min < pll->min_post_div) 906 post_div_min = pll->min_post_div; 907 908 post_div_max = vco_max / target_clock; 909 if ((target_clock * post_div_max) > vco_max) 910 --post_div_max; 911 if (post_div_max > pll->max_post_div) 912 post_div_max = pll->max_post_div; 913 } 914 915 /* represent the searched ratio as fractional number */ 916 nom = pll->flags & RADEON_PLL_USE_FRAC_FB_DIV ? freq : freq / 10; 917 den = pll->reference_freq; 918 919 /* reduce the numbers to a simpler ratio */ 920 avivo_reduce_ratio(&nom, &den, fb_div_min, post_div_min); 921 922 /* now search for a post divider */ 923 if (pll->flags & RADEON_PLL_PREFER_MINM_OVER_MAXP) 924 post_div_best = post_div_min; 925 else 926 post_div_best = post_div_max; 927 diff_best = ~0; 928 929 for (post_div = post_div_min; post_div <= post_div_max; ++post_div) { 930 unsigned diff = abs(den - den / post_div * post_div); 931 if (diff < diff_best || (diff == diff_best && 932 !(pll->flags & RADEON_PLL_PREFER_MINM_OVER_MAXP))) { 933 934 post_div_best = post_div; 935 diff_best = diff; 936 } 937 } 938 post_div = post_div_best; 939 940 /* get matching reference and feedback divider */ 941 ref_div = max(den / post_div, 1u); 942 fb_div = nom; 943 944 /* we're almost done, but reference and feedback 945 divider might be to large now */ 946 947 tmp = ref_div; 948 949 if (fb_div > fb_div_max) { 950 ref_div = ref_div * fb_div_max / fb_div; 951 fb_div = fb_div_max; 952 } 953 954 if (ref_div > ref_div_max) { 955 ref_div = ref_div_max; 956 fb_div = nom * ref_div_max / tmp; 957 } 958 959 /* reduce the numbers to a simpler ratio once more */ 960 /* this also makes sure that the reference divider is large enough */ 961 avivo_reduce_ratio(&fb_div, &ref_div, fb_div_min, ref_div_min); 962 963 /* and finally save the result */ 964 if (pll->flags & RADEON_PLL_USE_FRAC_FB_DIV) { 965 *fb_div_p = fb_div / 10; 966 *frac_fb_div_p = fb_div % 10; 967 } else { 968 *fb_div_p = fb_div; 969 *frac_fb_div_p = 0; 970 } 971 972 *dot_clock_p = ((pll->reference_freq * *fb_div_p * 10) + 973 (pll->reference_freq * *frac_fb_div_p)) / 974 (ref_div * post_div * 10); 975 *ref_div_p = ref_div; 976 *post_div_p = post_div; 977 978 DRM_DEBUG_KMS("%d - %d, pll dividers - fb: %d.%d ref: %d, post %d\n", 979 freq, *dot_clock_p, *fb_div_p, *frac_fb_div_p, 980 ref_div, post_div); 981 } 982 983 /* pre-avivo */ 984 static inline uint32_t radeon_div(uint64_t n, uint32_t d) 985 { 986 uint64_t mod; 987 988 n += d / 2; 989 990 mod = do_div(n, d); 991 return n; 992 } 993 994 void radeon_compute_pll_legacy(struct radeon_pll *pll, 995 uint64_t freq, 996 uint32_t *dot_clock_p, 997 uint32_t *fb_div_p, 998 uint32_t *frac_fb_div_p, 999 uint32_t *ref_div_p, 1000 uint32_t *post_div_p) 1001 { 1002 uint32_t min_ref_div = pll->min_ref_div; 1003 uint32_t max_ref_div = pll->max_ref_div; 1004 uint32_t min_post_div = pll->min_post_div; 1005 uint32_t max_post_div = pll->max_post_div; 1006 uint32_t min_fractional_feed_div = 0; 1007 uint32_t max_fractional_feed_div = 0; 1008 uint32_t best_vco = pll->best_vco; 1009 uint32_t best_post_div = 1; 1010 uint32_t best_ref_div = 1; 1011 uint32_t best_feedback_div = 1; 1012 uint32_t best_frac_feedback_div = 0; 1013 uint32_t best_freq = -1; 1014 uint32_t best_error = 0xffffffff; 1015 uint32_t best_vco_diff = 1; 1016 uint32_t post_div; 1017 u32 pll_out_min, pll_out_max; 1018 1019 DRM_DEBUG_KMS("PLL freq %llu %u %u\n", freq, pll->min_ref_div, pll->max_ref_div); 1020 freq = freq * 1000; 1021 1022 if (pll->flags & RADEON_PLL_IS_LCD) { 1023 pll_out_min = pll->lcd_pll_out_min; 1024 pll_out_max = pll->lcd_pll_out_max; 1025 } else { 1026 pll_out_min = pll->pll_out_min; 1027 pll_out_max = pll->pll_out_max; 1028 } 1029 1030 if (pll_out_min > 64800) 1031 pll_out_min = 64800; 1032 1033 if (pll->flags & RADEON_PLL_USE_REF_DIV) 1034 min_ref_div = max_ref_div = pll->reference_div; 1035 else { 1036 while (min_ref_div < max_ref_div-1) { 1037 uint32_t mid = (min_ref_div + max_ref_div) / 2; 1038 uint32_t pll_in = pll->reference_freq / mid; 1039 if (pll_in < pll->pll_in_min) 1040 max_ref_div = mid; 1041 else if (pll_in > pll->pll_in_max) 1042 min_ref_div = mid; 1043 else 1044 break; 1045 } 1046 } 1047 1048 if (pll->flags & RADEON_PLL_USE_POST_DIV) 1049 min_post_div = max_post_div = pll->post_div; 1050 1051 if (pll->flags & RADEON_PLL_USE_FRAC_FB_DIV) { 1052 min_fractional_feed_div = pll->min_frac_feedback_div; 1053 max_fractional_feed_div = pll->max_frac_feedback_div; 1054 } 1055 1056 for (post_div = max_post_div; post_div >= min_post_div; --post_div) { 1057 uint32_t ref_div; 1058 1059 if ((pll->flags & RADEON_PLL_NO_ODD_POST_DIV) && (post_div & 1)) 1060 continue; 1061 1062 /* legacy radeons only have a few post_divs */ 1063 if (pll->flags & RADEON_PLL_LEGACY) { 1064 if ((post_div == 5) || 1065 (post_div == 7) || 1066 (post_div == 9) || 1067 (post_div == 10) || 1068 (post_div == 11) || 1069 (post_div == 13) || 1070 (post_div == 14) || 1071 (post_div == 15)) 1072 continue; 1073 } 1074 1075 for (ref_div = min_ref_div; ref_div <= max_ref_div; ++ref_div) { 1076 uint32_t feedback_div, current_freq = 0, error, vco_diff; 1077 uint32_t pll_in = pll->reference_freq / ref_div; 1078 uint32_t min_feed_div = pll->min_feedback_div; 1079 uint32_t max_feed_div = pll->max_feedback_div + 1; 1080 1081 if (pll_in < pll->pll_in_min || pll_in > pll->pll_in_max) 1082 continue; 1083 1084 while (min_feed_div < max_feed_div) { 1085 uint32_t vco; 1086 uint32_t min_frac_feed_div = min_fractional_feed_div; 1087 uint32_t max_frac_feed_div = max_fractional_feed_div + 1; 1088 uint32_t frac_feedback_div; 1089 uint64_t tmp; 1090 1091 feedback_div = (min_feed_div + max_feed_div) / 2; 1092 1093 tmp = (uint64_t)pll->reference_freq * feedback_div; 1094 vco = radeon_div(tmp, ref_div); 1095 1096 if (vco < pll_out_min) { 1097 min_feed_div = feedback_div + 1; 1098 continue; 1099 } else if (vco > pll_out_max) { 1100 max_feed_div = feedback_div; 1101 continue; 1102 } 1103 1104 while (min_frac_feed_div < max_frac_feed_div) { 1105 frac_feedback_div = (min_frac_feed_div + max_frac_feed_div) / 2; 1106 tmp = (uint64_t)pll->reference_freq * 10000 * feedback_div; 1107 tmp += (uint64_t)pll->reference_freq * 1000 * frac_feedback_div; 1108 current_freq = radeon_div(tmp, ref_div * post_div); 1109 1110 if (pll->flags & RADEON_PLL_PREFER_CLOSEST_LOWER) { 1111 if (freq < current_freq) 1112 error = 0xffffffff; 1113 else 1114 error = freq - current_freq; 1115 } else 1116 error = abs(current_freq - freq); 1117 vco_diff = abs(vco - best_vco); 1118 1119 if ((best_vco == 0 && error < best_error) || 1120 (best_vco != 0 && 1121 ((best_error > 100 && error < best_error - 100) || 1122 (abs(error - best_error) < 100 && vco_diff < best_vco_diff)))) { 1123 best_post_div = post_div; 1124 best_ref_div = ref_div; 1125 best_feedback_div = feedback_div; 1126 best_frac_feedback_div = frac_feedback_div; 1127 best_freq = current_freq; 1128 best_error = error; 1129 best_vco_diff = vco_diff; 1130 } else if (current_freq == freq) { 1131 if (best_freq == -1) { 1132 best_post_div = post_div; 1133 best_ref_div = ref_div; 1134 best_feedback_div = feedback_div; 1135 best_frac_feedback_div = frac_feedback_div; 1136 best_freq = current_freq; 1137 best_error = error; 1138 best_vco_diff = vco_diff; 1139 } else if (((pll->flags & RADEON_PLL_PREFER_LOW_REF_DIV) && (ref_div < best_ref_div)) || 1140 ((pll->flags & RADEON_PLL_PREFER_HIGH_REF_DIV) && (ref_div > best_ref_div)) || 1141 ((pll->flags & RADEON_PLL_PREFER_LOW_FB_DIV) && (feedback_div < best_feedback_div)) || 1142 ((pll->flags & RADEON_PLL_PREFER_HIGH_FB_DIV) && (feedback_div > best_feedback_div)) || 1143 ((pll->flags & RADEON_PLL_PREFER_LOW_POST_DIV) && (post_div < best_post_div)) || 1144 ((pll->flags & RADEON_PLL_PREFER_HIGH_POST_DIV) && (post_div > best_post_div))) { 1145 best_post_div = post_div; 1146 best_ref_div = ref_div; 1147 best_feedback_div = feedback_div; 1148 best_frac_feedback_div = frac_feedback_div; 1149 best_freq = current_freq; 1150 best_error = error; 1151 best_vco_diff = vco_diff; 1152 } 1153 } 1154 if (current_freq < freq) 1155 min_frac_feed_div = frac_feedback_div + 1; 1156 else 1157 max_frac_feed_div = frac_feedback_div; 1158 } 1159 if (current_freq < freq) 1160 min_feed_div = feedback_div + 1; 1161 else 1162 max_feed_div = feedback_div; 1163 } 1164 } 1165 } 1166 1167 *dot_clock_p = best_freq / 10000; 1168 *fb_div_p = best_feedback_div; 1169 *frac_fb_div_p = best_frac_feedback_div; 1170 *ref_div_p = best_ref_div; 1171 *post_div_p = best_post_div; 1172 DRM_DEBUG_KMS("%lld %d, pll dividers - fb: %d.%d ref: %d, post %d\n", 1173 (long long)freq, 1174 best_freq / 1000, best_feedback_div, best_frac_feedback_div, 1175 best_ref_div, best_post_div); 1176 1177 } 1178 1179 static void radeon_user_framebuffer_destroy(struct drm_framebuffer *fb) 1180 { 1181 struct radeon_framebuffer *radeon_fb = to_radeon_framebuffer(fb); 1182 1183 if (radeon_fb->obj) { 1184 drm_gem_object_unreference_unlocked(radeon_fb->obj); 1185 } 1186 drm_framebuffer_cleanup(fb); 1187 kfree(radeon_fb); 1188 } 1189 1190 static int radeon_user_framebuffer_create_handle(struct drm_framebuffer *fb, 1191 struct drm_file *file_priv, 1192 unsigned int *handle) 1193 { 1194 struct radeon_framebuffer *radeon_fb = to_radeon_framebuffer(fb); 1195 1196 return drm_gem_handle_create(file_priv, radeon_fb->obj, handle); 1197 } 1198 1199 static const struct drm_framebuffer_funcs radeon_fb_funcs = { 1200 .destroy = radeon_user_framebuffer_destroy, 1201 .create_handle = radeon_user_framebuffer_create_handle, 1202 }; 1203 1204 int 1205 radeon_framebuffer_init(struct drm_device *dev, 1206 struct radeon_framebuffer *rfb, 1207 struct drm_mode_fb_cmd2 *mode_cmd, 1208 struct drm_gem_object *obj) 1209 { 1210 int ret; 1211 rfb->obj = obj; 1212 drm_helper_mode_fill_fb_struct(&rfb->base, mode_cmd); 1213 ret = drm_framebuffer_init(dev, &rfb->base, &radeon_fb_funcs); 1214 if (ret) { 1215 rfb->obj = NULL; 1216 return ret; 1217 } 1218 return 0; 1219 } 1220 1221 static struct drm_framebuffer * 1222 radeon_user_framebuffer_create(struct drm_device *dev, 1223 struct drm_file *file_priv, 1224 struct drm_mode_fb_cmd2 *mode_cmd) 1225 { 1226 struct drm_gem_object *obj; 1227 struct radeon_framebuffer *radeon_fb; 1228 int ret; 1229 1230 obj = drm_gem_object_lookup(dev, file_priv, mode_cmd->handles[0]); 1231 if (obj == NULL) { 1232 dev_err(&dev->pdev->dev, "No GEM object associated to handle 0x%08X, " 1233 "can't create framebuffer\n", mode_cmd->handles[0]); 1234 return ERR_PTR(-ENOENT); 1235 } 1236 1237 radeon_fb = kzalloc(sizeof(*radeon_fb), GFP_KERNEL); 1238 if (radeon_fb == NULL) { 1239 drm_gem_object_unreference_unlocked(obj); 1240 return ERR_PTR(-ENOMEM); 1241 } 1242 1243 ret = radeon_framebuffer_init(dev, radeon_fb, mode_cmd, obj); 1244 if (ret) { 1245 kfree(radeon_fb); 1246 drm_gem_object_unreference_unlocked(obj); 1247 return ERR_PTR(ret); 1248 } 1249 1250 return &radeon_fb->base; 1251 } 1252 1253 static void radeon_output_poll_changed(struct drm_device *dev) 1254 { 1255 struct radeon_device *rdev = dev->dev_private; 1256 radeon_fb_output_poll_changed(rdev); 1257 } 1258 1259 static const struct drm_mode_config_funcs radeon_mode_funcs = { 1260 .fb_create = radeon_user_framebuffer_create, 1261 .output_poll_changed = radeon_output_poll_changed 1262 }; 1263 1264 static struct drm_prop_enum_list radeon_tmds_pll_enum_list[] = 1265 { { 0, "driver" }, 1266 { 1, "bios" }, 1267 }; 1268 1269 static struct drm_prop_enum_list radeon_tv_std_enum_list[] = 1270 { { TV_STD_NTSC, "ntsc" }, 1271 { TV_STD_PAL, "pal" }, 1272 { TV_STD_PAL_M, "pal-m" }, 1273 { TV_STD_PAL_60, "pal-60" }, 1274 { TV_STD_NTSC_J, "ntsc-j" }, 1275 { TV_STD_SCART_PAL, "scart-pal" }, 1276 { TV_STD_PAL_CN, "pal-cn" }, 1277 { TV_STD_SECAM, "secam" }, 1278 }; 1279 1280 static struct drm_prop_enum_list radeon_underscan_enum_list[] = 1281 { { UNDERSCAN_OFF, "off" }, 1282 { UNDERSCAN_ON, "on" }, 1283 { UNDERSCAN_AUTO, "auto" }, 1284 }; 1285 1286 static struct drm_prop_enum_list radeon_audio_enum_list[] = 1287 { { RADEON_AUDIO_DISABLE, "off" }, 1288 { RADEON_AUDIO_ENABLE, "on" }, 1289 { RADEON_AUDIO_AUTO, "auto" }, 1290 }; 1291 1292 /* XXX support different dither options? spatial, temporal, both, etc. */ 1293 static struct drm_prop_enum_list radeon_dither_enum_list[] = 1294 { { RADEON_FMT_DITHER_DISABLE, "off" }, 1295 { RADEON_FMT_DITHER_ENABLE, "on" }, 1296 }; 1297 1298 static int radeon_modeset_create_props(struct radeon_device *rdev) 1299 { 1300 int sz; 1301 1302 if (rdev->is_atom_bios) { 1303 rdev->mode_info.coherent_mode_property = 1304 drm_property_create_range(rdev->ddev, 0 , "coherent", 0, 1); 1305 if (!rdev->mode_info.coherent_mode_property) 1306 return -ENOMEM; 1307 } 1308 1309 if (!ASIC_IS_AVIVO(rdev)) { 1310 sz = ARRAY_SIZE(radeon_tmds_pll_enum_list); 1311 rdev->mode_info.tmds_pll_property = 1312 drm_property_create_enum(rdev->ddev, 0, 1313 "tmds_pll", 1314 radeon_tmds_pll_enum_list, sz); 1315 } 1316 1317 rdev->mode_info.load_detect_property = 1318 drm_property_create_range(rdev->ddev, 0, "load detection", 0, 1); 1319 if (!rdev->mode_info.load_detect_property) 1320 return -ENOMEM; 1321 1322 drm_mode_create_scaling_mode_property(rdev->ddev); 1323 1324 sz = ARRAY_SIZE(radeon_tv_std_enum_list); 1325 rdev->mode_info.tv_std_property = 1326 drm_property_create_enum(rdev->ddev, 0, 1327 "tv standard", 1328 radeon_tv_std_enum_list, sz); 1329 1330 sz = ARRAY_SIZE(radeon_underscan_enum_list); 1331 rdev->mode_info.underscan_property = 1332 drm_property_create_enum(rdev->ddev, 0, 1333 "underscan", 1334 radeon_underscan_enum_list, sz); 1335 1336 rdev->mode_info.underscan_hborder_property = 1337 drm_property_create_range(rdev->ddev, 0, 1338 "underscan hborder", 0, 128); 1339 if (!rdev->mode_info.underscan_hborder_property) 1340 return -ENOMEM; 1341 1342 rdev->mode_info.underscan_vborder_property = 1343 drm_property_create_range(rdev->ddev, 0, 1344 "underscan vborder", 0, 128); 1345 if (!rdev->mode_info.underscan_vborder_property) 1346 return -ENOMEM; 1347 1348 sz = ARRAY_SIZE(radeon_audio_enum_list); 1349 rdev->mode_info.audio_property = 1350 drm_property_create_enum(rdev->ddev, 0, 1351 "audio", 1352 radeon_audio_enum_list, sz); 1353 1354 sz = ARRAY_SIZE(radeon_dither_enum_list); 1355 rdev->mode_info.dither_property = 1356 drm_property_create_enum(rdev->ddev, 0, 1357 "dither", 1358 radeon_dither_enum_list, sz); 1359 1360 return 0; 1361 } 1362 1363 void radeon_update_display_priority(struct radeon_device *rdev) 1364 { 1365 /* adjustment options for the display watermarks */ 1366 if ((radeon_disp_priority == 0) || (radeon_disp_priority > 2)) { 1367 /* set display priority to high for r3xx, rv515 chips 1368 * this avoids flickering due to underflow to the 1369 * display controllers during heavy acceleration. 1370 * Don't force high on rs4xx igp chips as it seems to 1371 * affect the sound card. See kernel bug 15982. 1372 */ 1373 if ((ASIC_IS_R300(rdev) || (rdev->family == CHIP_RV515)) && 1374 !(rdev->flags & RADEON_IS_IGP)) 1375 rdev->disp_priority = 2; 1376 else 1377 rdev->disp_priority = 0; 1378 } else 1379 rdev->disp_priority = radeon_disp_priority; 1380 1381 } 1382 1383 /* 1384 * Allocate hdmi structs and determine register offsets 1385 */ 1386 static void radeon_afmt_init(struct radeon_device *rdev) 1387 { 1388 int i; 1389 1390 for (i = 0; i < RADEON_MAX_AFMT_BLOCKS; i++) 1391 rdev->mode_info.afmt[i] = NULL; 1392 1393 if (ASIC_IS_NODCE(rdev)) { 1394 /* nothing to do */ 1395 } else if (ASIC_IS_DCE4(rdev)) { 1396 static uint32_t eg_offsets[] = { 1397 EVERGREEN_CRTC0_REGISTER_OFFSET, 1398 EVERGREEN_CRTC1_REGISTER_OFFSET, 1399 EVERGREEN_CRTC2_REGISTER_OFFSET, 1400 EVERGREEN_CRTC3_REGISTER_OFFSET, 1401 EVERGREEN_CRTC4_REGISTER_OFFSET, 1402 EVERGREEN_CRTC5_REGISTER_OFFSET, 1403 0x13830 - 0x7030, 1404 }; 1405 int num_afmt; 1406 1407 /* DCE8 has 7 audio blocks tied to DIG encoders */ 1408 /* DCE6 has 6 audio blocks tied to DIG encoders */ 1409 /* DCE4/5 has 6 audio blocks tied to DIG encoders */ 1410 /* DCE4.1 has 2 audio blocks tied to DIG encoders */ 1411 if (ASIC_IS_DCE8(rdev)) 1412 num_afmt = 7; 1413 else if (ASIC_IS_DCE6(rdev)) 1414 num_afmt = 6; 1415 else if (ASIC_IS_DCE5(rdev)) 1416 num_afmt = 6; 1417 else if (ASIC_IS_DCE41(rdev)) 1418 num_afmt = 2; 1419 else /* DCE4 */ 1420 num_afmt = 6; 1421 1422 BUG_ON(num_afmt > ARRAY_SIZE(eg_offsets)); 1423 for (i = 0; i < num_afmt; i++) { 1424 rdev->mode_info.afmt[i] = kzalloc(sizeof(struct radeon_afmt), GFP_KERNEL); 1425 if (rdev->mode_info.afmt[i]) { 1426 rdev->mode_info.afmt[i]->offset = eg_offsets[i]; 1427 rdev->mode_info.afmt[i]->id = i; 1428 } 1429 } 1430 } else if (ASIC_IS_DCE3(rdev)) { 1431 /* DCE3.x has 2 audio blocks tied to DIG encoders */ 1432 rdev->mode_info.afmt[0] = kzalloc(sizeof(struct radeon_afmt), GFP_KERNEL); 1433 if (rdev->mode_info.afmt[0]) { 1434 rdev->mode_info.afmt[0]->offset = DCE3_HDMI_OFFSET0; 1435 rdev->mode_info.afmt[0]->id = 0; 1436 } 1437 rdev->mode_info.afmt[1] = kzalloc(sizeof(struct radeon_afmt), GFP_KERNEL); 1438 if (rdev->mode_info.afmt[1]) { 1439 rdev->mode_info.afmt[1]->offset = DCE3_HDMI_OFFSET1; 1440 rdev->mode_info.afmt[1]->id = 1; 1441 } 1442 } else if (ASIC_IS_DCE2(rdev)) { 1443 /* DCE2 has at least 1 routable audio block */ 1444 rdev->mode_info.afmt[0] = kzalloc(sizeof(struct radeon_afmt), GFP_KERNEL); 1445 if (rdev->mode_info.afmt[0]) { 1446 rdev->mode_info.afmt[0]->offset = DCE2_HDMI_OFFSET0; 1447 rdev->mode_info.afmt[0]->id = 0; 1448 } 1449 /* r6xx has 2 routable audio blocks */ 1450 if (rdev->family >= CHIP_R600) { 1451 rdev->mode_info.afmt[1] = kzalloc(sizeof(struct radeon_afmt), GFP_KERNEL); 1452 if (rdev->mode_info.afmt[1]) { 1453 rdev->mode_info.afmt[1]->offset = DCE2_HDMI_OFFSET1; 1454 rdev->mode_info.afmt[1]->id = 1; 1455 } 1456 } 1457 } 1458 } 1459 1460 static void radeon_afmt_fini(struct radeon_device *rdev) 1461 { 1462 int i; 1463 1464 for (i = 0; i < RADEON_MAX_AFMT_BLOCKS; i++) { 1465 kfree(rdev->mode_info.afmt[i]); 1466 rdev->mode_info.afmt[i] = NULL; 1467 } 1468 } 1469 1470 int radeon_modeset_init(struct radeon_device *rdev) 1471 { 1472 int i; 1473 int ret; 1474 1475 drm_mode_config_init(rdev->ddev); 1476 rdev->mode_info.mode_config_initialized = true; 1477 1478 rdev->ddev->mode_config.funcs = &radeon_mode_funcs; 1479 1480 if (ASIC_IS_DCE5(rdev)) { 1481 rdev->ddev->mode_config.max_width = 16384; 1482 rdev->ddev->mode_config.max_height = 16384; 1483 } else if (ASIC_IS_AVIVO(rdev)) { 1484 rdev->ddev->mode_config.max_width = 8192; 1485 rdev->ddev->mode_config.max_height = 8192; 1486 } else { 1487 rdev->ddev->mode_config.max_width = 4096; 1488 rdev->ddev->mode_config.max_height = 4096; 1489 } 1490 1491 rdev->ddev->mode_config.preferred_depth = 24; 1492 rdev->ddev->mode_config.prefer_shadow = 1; 1493 1494 rdev->ddev->mode_config.fb_base = rdev->mc.aper_base; 1495 1496 ret = radeon_modeset_create_props(rdev); 1497 if (ret) { 1498 return ret; 1499 } 1500 1501 /* init i2c buses */ 1502 radeon_i2c_init(rdev); 1503 1504 /* check combios for a valid hardcoded EDID - Sun servers */ 1505 if (!rdev->is_atom_bios) { 1506 /* check for hardcoded EDID in BIOS */ 1507 radeon_combios_check_hardcoded_edid(rdev); 1508 } 1509 1510 /* allocate crtcs */ 1511 for (i = 0; i < rdev->num_crtc; i++) { 1512 radeon_crtc_init(rdev->ddev, i); 1513 } 1514 1515 /* okay we should have all the bios connectors */ 1516 ret = radeon_setup_enc_conn(rdev->ddev); 1517 if (!ret) { 1518 return ret; 1519 } 1520 1521 /* init dig PHYs, disp eng pll */ 1522 if (rdev->is_atom_bios) { 1523 radeon_atom_encoder_init(rdev); 1524 radeon_atom_disp_eng_pll_init(rdev); 1525 } 1526 1527 /* initialize hpd */ 1528 radeon_hpd_init(rdev); 1529 1530 /* setup afmt */ 1531 radeon_afmt_init(rdev); 1532 1533 radeon_fbdev_init(rdev); 1534 drm_kms_helper_poll_init(rdev->ddev); 1535 1536 if (rdev->pm.dpm_enabled) { 1537 /* do dpm late init */ 1538 ret = radeon_pm_late_init(rdev); 1539 if (ret) { 1540 rdev->pm.dpm_enabled = false; 1541 DRM_ERROR("radeon_pm_late_init failed, disabling dpm\n"); 1542 } 1543 /* set the dpm state for PX since there won't be 1544 * a modeset to call this. 1545 */ 1546 radeon_pm_compute_clocks(rdev); 1547 } 1548 1549 return 0; 1550 } 1551 1552 void radeon_modeset_fini(struct radeon_device *rdev) 1553 { 1554 radeon_fbdev_fini(rdev); 1555 kfree(rdev->mode_info.bios_hardcoded_edid); 1556 1557 if (rdev->mode_info.mode_config_initialized) { 1558 radeon_afmt_fini(rdev); 1559 drm_kms_helper_poll_fini(rdev->ddev); 1560 radeon_hpd_fini(rdev); 1561 drm_mode_config_cleanup(rdev->ddev); 1562 rdev->mode_info.mode_config_initialized = false; 1563 } 1564 /* free i2c buses */ 1565 radeon_i2c_fini(rdev); 1566 } 1567 1568 static bool is_hdtv_mode(const struct drm_display_mode *mode) 1569 { 1570 /* try and guess if this is a tv or a monitor */ 1571 if ((mode->vdisplay == 480 && mode->hdisplay == 720) || /* 480p */ 1572 (mode->vdisplay == 576) || /* 576p */ 1573 (mode->vdisplay == 720) || /* 720p */ 1574 (mode->vdisplay == 1080)) /* 1080p */ 1575 return true; 1576 else 1577 return false; 1578 } 1579 1580 bool radeon_crtc_scaling_mode_fixup(struct drm_crtc *crtc, 1581 const struct drm_display_mode *mode, 1582 struct drm_display_mode *adjusted_mode) 1583 { 1584 struct drm_device *dev = crtc->dev; 1585 struct radeon_device *rdev = dev->dev_private; 1586 struct drm_encoder *encoder; 1587 struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc); 1588 struct radeon_encoder *radeon_encoder; 1589 struct drm_connector *connector; 1590 struct radeon_connector *radeon_connector; 1591 bool first = true; 1592 u32 src_v = 1, dst_v = 1; 1593 u32 src_h = 1, dst_h = 1; 1594 1595 radeon_crtc->h_border = 0; 1596 radeon_crtc->v_border = 0; 1597 1598 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { 1599 if (encoder->crtc != crtc) 1600 continue; 1601 radeon_encoder = to_radeon_encoder(encoder); 1602 connector = radeon_get_connector_for_encoder(encoder); 1603 radeon_connector = to_radeon_connector(connector); 1604 1605 if (first) { 1606 /* set scaling */ 1607 if (radeon_encoder->rmx_type == RMX_OFF) 1608 radeon_crtc->rmx_type = RMX_OFF; 1609 else if (mode->hdisplay < radeon_encoder->native_mode.hdisplay || 1610 mode->vdisplay < radeon_encoder->native_mode.vdisplay) 1611 radeon_crtc->rmx_type = radeon_encoder->rmx_type; 1612 else 1613 radeon_crtc->rmx_type = RMX_OFF; 1614 /* copy native mode */ 1615 memcpy(&radeon_crtc->native_mode, 1616 &radeon_encoder->native_mode, 1617 sizeof(struct drm_display_mode)); 1618 src_v = crtc->mode.vdisplay; 1619 dst_v = radeon_crtc->native_mode.vdisplay; 1620 src_h = crtc->mode.hdisplay; 1621 dst_h = radeon_crtc->native_mode.hdisplay; 1622 1623 /* fix up for overscan on hdmi */ 1624 if (ASIC_IS_AVIVO(rdev) && 1625 (!(mode->flags & DRM_MODE_FLAG_INTERLACE)) && 1626 ((radeon_encoder->underscan_type == UNDERSCAN_ON) || 1627 ((radeon_encoder->underscan_type == UNDERSCAN_AUTO) && 1628 drm_detect_hdmi_monitor(radeon_connector->edid) && 1629 is_hdtv_mode(mode)))) { 1630 if (radeon_encoder->underscan_hborder != 0) 1631 radeon_crtc->h_border = radeon_encoder->underscan_hborder; 1632 else 1633 radeon_crtc->h_border = (mode->hdisplay >> 5) + 16; 1634 if (radeon_encoder->underscan_vborder != 0) 1635 radeon_crtc->v_border = radeon_encoder->underscan_vborder; 1636 else 1637 radeon_crtc->v_border = (mode->vdisplay >> 5) + 16; 1638 radeon_crtc->rmx_type = RMX_FULL; 1639 src_v = crtc->mode.vdisplay; 1640 dst_v = crtc->mode.vdisplay - (radeon_crtc->v_border * 2); 1641 src_h = crtc->mode.hdisplay; 1642 dst_h = crtc->mode.hdisplay - (radeon_crtc->h_border * 2); 1643 } 1644 first = false; 1645 } else { 1646 if (radeon_crtc->rmx_type != radeon_encoder->rmx_type) { 1647 /* WARNING: Right now this can't happen but 1648 * in the future we need to check that scaling 1649 * are consistent across different encoder 1650 * (ie all encoder can work with the same 1651 * scaling). 1652 */ 1653 DRM_ERROR("Scaling not consistent across encoder.\n"); 1654 return false; 1655 } 1656 } 1657 } 1658 if (radeon_crtc->rmx_type != RMX_OFF) { 1659 fixed20_12 a, b; 1660 a.full = dfixed_const(src_v); 1661 b.full = dfixed_const(dst_v); 1662 radeon_crtc->vsc.full = dfixed_div(a, b); 1663 a.full = dfixed_const(src_h); 1664 b.full = dfixed_const(dst_h); 1665 radeon_crtc->hsc.full = dfixed_div(a, b); 1666 } else { 1667 radeon_crtc->vsc.full = dfixed_const(1); 1668 radeon_crtc->hsc.full = dfixed_const(1); 1669 } 1670 return true; 1671 } 1672 1673 /* 1674 * Retrieve current video scanout position of crtc on a given gpu, and 1675 * an optional accurate timestamp of when query happened. 1676 * 1677 * \param dev Device to query. 1678 * \param crtc Crtc to query. 1679 * \param flags Flags from caller (DRM_CALLED_FROM_VBLIRQ or 0). 1680 * \param *vpos Location where vertical scanout position should be stored. 1681 * \param *hpos Location where horizontal scanout position should go. 1682 * \param *stime Target location for timestamp taken immediately before 1683 * scanout position query. Can be NULL to skip timestamp. 1684 * \param *etime Target location for timestamp taken immediately after 1685 * scanout position query. Can be NULL to skip timestamp. 1686 * 1687 * Returns vpos as a positive number while in active scanout area. 1688 * Returns vpos as a negative number inside vblank, counting the number 1689 * of scanlines to go until end of vblank, e.g., -1 means "one scanline 1690 * until start of active scanout / end of vblank." 1691 * 1692 * \return Flags, or'ed together as follows: 1693 * 1694 * DRM_SCANOUTPOS_VALID = Query successful. 1695 * DRM_SCANOUTPOS_INVBL = Inside vblank. 1696 * DRM_SCANOUTPOS_ACCURATE = Returned position is accurate. A lack of 1697 * this flag means that returned position may be offset by a constant but 1698 * unknown small number of scanlines wrt. real scanout position. 1699 * 1700 */ 1701 int radeon_get_crtc_scanoutpos(struct drm_device *dev, int crtc, unsigned int flags, 1702 int *vpos, int *hpos, ktime_t *stime, ktime_t *etime) 1703 { 1704 u32 stat_crtc = 0, vbl = 0, position = 0; 1705 int vbl_start, vbl_end, vtotal, ret = 0; 1706 bool in_vbl = true; 1707 1708 struct radeon_device *rdev = dev->dev_private; 1709 1710 /* preempt_disable_rt() should go right here in PREEMPT_RT patchset. */ 1711 1712 /* Get optional system timestamp before query. */ 1713 if (stime) 1714 *stime = ktime_get(); 1715 1716 if (ASIC_IS_DCE4(rdev)) { 1717 if (crtc == 0) { 1718 vbl = RREG32(EVERGREEN_CRTC_V_BLANK_START_END + 1719 EVERGREEN_CRTC0_REGISTER_OFFSET); 1720 position = RREG32(EVERGREEN_CRTC_STATUS_POSITION + 1721 EVERGREEN_CRTC0_REGISTER_OFFSET); 1722 ret |= DRM_SCANOUTPOS_VALID; 1723 } 1724 if (crtc == 1) { 1725 vbl = RREG32(EVERGREEN_CRTC_V_BLANK_START_END + 1726 EVERGREEN_CRTC1_REGISTER_OFFSET); 1727 position = RREG32(EVERGREEN_CRTC_STATUS_POSITION + 1728 EVERGREEN_CRTC1_REGISTER_OFFSET); 1729 ret |= DRM_SCANOUTPOS_VALID; 1730 } 1731 if (crtc == 2) { 1732 vbl = RREG32(EVERGREEN_CRTC_V_BLANK_START_END + 1733 EVERGREEN_CRTC2_REGISTER_OFFSET); 1734 position = RREG32(EVERGREEN_CRTC_STATUS_POSITION + 1735 EVERGREEN_CRTC2_REGISTER_OFFSET); 1736 ret |= DRM_SCANOUTPOS_VALID; 1737 } 1738 if (crtc == 3) { 1739 vbl = RREG32(EVERGREEN_CRTC_V_BLANK_START_END + 1740 EVERGREEN_CRTC3_REGISTER_OFFSET); 1741 position = RREG32(EVERGREEN_CRTC_STATUS_POSITION + 1742 EVERGREEN_CRTC3_REGISTER_OFFSET); 1743 ret |= DRM_SCANOUTPOS_VALID; 1744 } 1745 if (crtc == 4) { 1746 vbl = RREG32(EVERGREEN_CRTC_V_BLANK_START_END + 1747 EVERGREEN_CRTC4_REGISTER_OFFSET); 1748 position = RREG32(EVERGREEN_CRTC_STATUS_POSITION + 1749 EVERGREEN_CRTC4_REGISTER_OFFSET); 1750 ret |= DRM_SCANOUTPOS_VALID; 1751 } 1752 if (crtc == 5) { 1753 vbl = RREG32(EVERGREEN_CRTC_V_BLANK_START_END + 1754 EVERGREEN_CRTC5_REGISTER_OFFSET); 1755 position = RREG32(EVERGREEN_CRTC_STATUS_POSITION + 1756 EVERGREEN_CRTC5_REGISTER_OFFSET); 1757 ret |= DRM_SCANOUTPOS_VALID; 1758 } 1759 } else if (ASIC_IS_AVIVO(rdev)) { 1760 if (crtc == 0) { 1761 vbl = RREG32(AVIVO_D1CRTC_V_BLANK_START_END); 1762 position = RREG32(AVIVO_D1CRTC_STATUS_POSITION); 1763 ret |= DRM_SCANOUTPOS_VALID; 1764 } 1765 if (crtc == 1) { 1766 vbl = RREG32(AVIVO_D2CRTC_V_BLANK_START_END); 1767 position = RREG32(AVIVO_D2CRTC_STATUS_POSITION); 1768 ret |= DRM_SCANOUTPOS_VALID; 1769 } 1770 } else { 1771 /* Pre-AVIVO: Different encoding of scanout pos and vblank interval. */ 1772 if (crtc == 0) { 1773 /* Assume vbl_end == 0, get vbl_start from 1774 * upper 16 bits. 1775 */ 1776 vbl = (RREG32(RADEON_CRTC_V_TOTAL_DISP) & 1777 RADEON_CRTC_V_DISP) >> RADEON_CRTC_V_DISP_SHIFT; 1778 /* Only retrieve vpos from upper 16 bits, set hpos == 0. */ 1779 position = (RREG32(RADEON_CRTC_VLINE_CRNT_VLINE) >> 16) & RADEON_CRTC_V_TOTAL; 1780 stat_crtc = RREG32(RADEON_CRTC_STATUS); 1781 if (!(stat_crtc & 1)) 1782 in_vbl = false; 1783 1784 ret |= DRM_SCANOUTPOS_VALID; 1785 } 1786 if (crtc == 1) { 1787 vbl = (RREG32(RADEON_CRTC2_V_TOTAL_DISP) & 1788 RADEON_CRTC_V_DISP) >> RADEON_CRTC_V_DISP_SHIFT; 1789 position = (RREG32(RADEON_CRTC2_VLINE_CRNT_VLINE) >> 16) & RADEON_CRTC_V_TOTAL; 1790 stat_crtc = RREG32(RADEON_CRTC2_STATUS); 1791 if (!(stat_crtc & 1)) 1792 in_vbl = false; 1793 1794 ret |= DRM_SCANOUTPOS_VALID; 1795 } 1796 } 1797 1798 /* Get optional system timestamp after query. */ 1799 if (etime) 1800 *etime = ktime_get(); 1801 1802 /* preempt_enable_rt() should go right here in PREEMPT_RT patchset. */ 1803 1804 /* Decode into vertical and horizontal scanout position. */ 1805 *vpos = position & 0x1fff; 1806 *hpos = (position >> 16) & 0x1fff; 1807 1808 /* Valid vblank area boundaries from gpu retrieved? */ 1809 if (vbl > 0) { 1810 /* Yes: Decode. */ 1811 ret |= DRM_SCANOUTPOS_ACCURATE; 1812 vbl_start = vbl & 0x1fff; 1813 vbl_end = (vbl >> 16) & 0x1fff; 1814 } 1815 else { 1816 /* No: Fake something reasonable which gives at least ok results. */ 1817 vbl_start = rdev->mode_info.crtcs[crtc]->base.hwmode.crtc_vdisplay; 1818 vbl_end = 0; 1819 } 1820 1821 /* Test scanout position against vblank region. */ 1822 if ((*vpos < vbl_start) && (*vpos >= vbl_end)) 1823 in_vbl = false; 1824 1825 /* Check if inside vblank area and apply corrective offsets: 1826 * vpos will then be >=0 in video scanout area, but negative 1827 * within vblank area, counting down the number of lines until 1828 * start of scanout. 1829 */ 1830 1831 /* Inside "upper part" of vblank area? Apply corrective offset if so: */ 1832 if (in_vbl && (*vpos >= vbl_start)) { 1833 vtotal = rdev->mode_info.crtcs[crtc]->base.hwmode.crtc_vtotal; 1834 *vpos = *vpos - vtotal; 1835 } 1836 1837 /* Correct for shifted end of vbl at vbl_end. */ 1838 *vpos = *vpos - vbl_end; 1839 1840 /* In vblank? */ 1841 if (in_vbl) 1842 ret |= DRM_SCANOUTPOS_INVBL; 1843 1844 /* Is vpos outside nominal vblank area, but less than 1845 * 1/100 of a frame height away from start of vblank? 1846 * If so, assume this isn't a massively delayed vblank 1847 * interrupt, but a vblank interrupt that fired a few 1848 * microseconds before true start of vblank. Compensate 1849 * by adding a full frame duration to the final timestamp. 1850 * Happens, e.g., on ATI R500, R600. 1851 * 1852 * We only do this if DRM_CALLED_FROM_VBLIRQ. 1853 */ 1854 if ((flags & DRM_CALLED_FROM_VBLIRQ) && !in_vbl) { 1855 vbl_start = rdev->mode_info.crtcs[crtc]->base.hwmode.crtc_vdisplay; 1856 vtotal = rdev->mode_info.crtcs[crtc]->base.hwmode.crtc_vtotal; 1857 1858 if (vbl_start - *vpos < vtotal / 100) { 1859 *vpos -= vtotal; 1860 1861 /* Signal this correction as "applied". */ 1862 ret |= 0x8; 1863 } 1864 } 1865 1866 return ret; 1867 } 1868