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/drm_crtc_helper.h> 28 #include <uapi_drm/radeon_drm.h> 29 #include <drm/drm_fixed.h> 30 #include "radeon.h" 31 #include "atom.h" 32 33 static void radeon_overscan_setup(struct drm_crtc *crtc, 34 struct drm_display_mode *mode) 35 { 36 struct drm_device *dev = crtc->dev; 37 struct radeon_device *rdev = dev->dev_private; 38 struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc); 39 40 WREG32(RADEON_OVR_CLR + radeon_crtc->crtc_offset, 0); 41 WREG32(RADEON_OVR_WID_LEFT_RIGHT + radeon_crtc->crtc_offset, 0); 42 WREG32(RADEON_OVR_WID_TOP_BOTTOM + radeon_crtc->crtc_offset, 0); 43 } 44 45 static void radeon_legacy_rmx_mode_set(struct drm_crtc *crtc, 46 struct drm_display_mode *mode) 47 { 48 struct drm_device *dev = crtc->dev; 49 struct radeon_device *rdev = dev->dev_private; 50 struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc); 51 int xres = mode->hdisplay; 52 int yres = mode->vdisplay; 53 bool hscale = true, vscale = true; 54 int hsync_wid; 55 int vsync_wid; 56 int hsync_start; 57 int blank_width; 58 u32 scale, inc, crtc_more_cntl; 59 u32 fp_horz_stretch, fp_vert_stretch, fp_horz_vert_active; 60 u32 fp_h_sync_strt_wid, fp_crtc_h_total_disp; 61 u32 fp_v_sync_strt_wid, fp_crtc_v_total_disp; 62 struct drm_display_mode *native_mode = &radeon_crtc->native_mode; 63 64 fp_vert_stretch = RREG32(RADEON_FP_VERT_STRETCH) & 65 (RADEON_VERT_STRETCH_RESERVED | 66 RADEON_VERT_AUTO_RATIO_INC); 67 fp_horz_stretch = RREG32(RADEON_FP_HORZ_STRETCH) & 68 (RADEON_HORZ_FP_LOOP_STRETCH | 69 RADEON_HORZ_AUTO_RATIO_INC); 70 71 crtc_more_cntl = 0; 72 if ((rdev->family == CHIP_RS100) || 73 (rdev->family == CHIP_RS200)) { 74 /* This is to workaround the asic bug for RMX, some versions 75 of BIOS dosen't have this register initialized correctly. */ 76 crtc_more_cntl |= RADEON_CRTC_H_CUTOFF_ACTIVE_EN; 77 } 78 79 80 fp_crtc_h_total_disp = ((((mode->crtc_htotal / 8) - 1) & 0x3ff) 81 | ((((mode->crtc_hdisplay / 8) - 1) & 0x1ff) << 16)); 82 83 hsync_wid = (mode->crtc_hsync_end - mode->crtc_hsync_start) / 8; 84 if (!hsync_wid) 85 hsync_wid = 1; 86 hsync_start = mode->crtc_hsync_start - 8; 87 88 fp_h_sync_strt_wid = ((hsync_start & 0x1fff) 89 | ((hsync_wid & 0x3f) << 16) 90 | ((mode->flags & DRM_MODE_FLAG_NHSYNC) 91 ? RADEON_CRTC_H_SYNC_POL 92 : 0)); 93 94 fp_crtc_v_total_disp = (((mode->crtc_vtotal - 1) & 0xffff) 95 | ((mode->crtc_vdisplay - 1) << 16)); 96 97 vsync_wid = mode->crtc_vsync_end - mode->crtc_vsync_start; 98 if (!vsync_wid) 99 vsync_wid = 1; 100 101 fp_v_sync_strt_wid = (((mode->crtc_vsync_start - 1) & 0xfff) 102 | ((vsync_wid & 0x1f) << 16) 103 | ((mode->flags & DRM_MODE_FLAG_NVSYNC) 104 ? RADEON_CRTC_V_SYNC_POL 105 : 0)); 106 107 fp_horz_vert_active = 0; 108 109 if (native_mode->hdisplay == 0 || 110 native_mode->vdisplay == 0) { 111 hscale = false; 112 vscale = false; 113 } else { 114 if (xres > native_mode->hdisplay) 115 xres = native_mode->hdisplay; 116 if (yres > native_mode->vdisplay) 117 yres = native_mode->vdisplay; 118 119 if (xres == native_mode->hdisplay) 120 hscale = false; 121 if (yres == native_mode->vdisplay) 122 vscale = false; 123 } 124 125 switch (radeon_crtc->rmx_type) { 126 case RMX_FULL: 127 case RMX_ASPECT: 128 if (!hscale) 129 fp_horz_stretch |= ((xres/8-1) << 16); 130 else { 131 inc = (fp_horz_stretch & RADEON_HORZ_AUTO_RATIO_INC) ? 1 : 0; 132 scale = ((xres + inc) * RADEON_HORZ_STRETCH_RATIO_MAX) 133 / native_mode->hdisplay + 1; 134 fp_horz_stretch |= (((scale) & RADEON_HORZ_STRETCH_RATIO_MASK) | 135 RADEON_HORZ_STRETCH_BLEND | 136 RADEON_HORZ_STRETCH_ENABLE | 137 ((native_mode->hdisplay/8-1) << 16)); 138 } 139 140 if (!vscale) 141 fp_vert_stretch |= ((yres-1) << 12); 142 else { 143 inc = (fp_vert_stretch & RADEON_VERT_AUTO_RATIO_INC) ? 1 : 0; 144 scale = ((yres + inc) * RADEON_VERT_STRETCH_RATIO_MAX) 145 / native_mode->vdisplay + 1; 146 fp_vert_stretch |= (((scale) & RADEON_VERT_STRETCH_RATIO_MASK) | 147 RADEON_VERT_STRETCH_ENABLE | 148 RADEON_VERT_STRETCH_BLEND | 149 ((native_mode->vdisplay-1) << 12)); 150 } 151 break; 152 case RMX_CENTER: 153 fp_horz_stretch |= ((xres/8-1) << 16); 154 fp_vert_stretch |= ((yres-1) << 12); 155 156 crtc_more_cntl |= (RADEON_CRTC_AUTO_HORZ_CENTER_EN | 157 RADEON_CRTC_AUTO_VERT_CENTER_EN); 158 159 blank_width = (mode->crtc_hblank_end - mode->crtc_hblank_start) / 8; 160 if (blank_width > 110) 161 blank_width = 110; 162 163 fp_crtc_h_total_disp = (((blank_width) & 0x3ff) 164 | ((((mode->crtc_hdisplay / 8) - 1) & 0x1ff) << 16)); 165 166 hsync_wid = (mode->crtc_hsync_end - mode->crtc_hsync_start) / 8; 167 if (!hsync_wid) 168 hsync_wid = 1; 169 170 fp_h_sync_strt_wid = ((((mode->crtc_hsync_start - mode->crtc_hblank_start) / 8) & 0x1fff) 171 | ((hsync_wid & 0x3f) << 16) 172 | ((mode->flags & DRM_MODE_FLAG_NHSYNC) 173 ? RADEON_CRTC_H_SYNC_POL 174 : 0)); 175 176 fp_crtc_v_total_disp = (((mode->crtc_vblank_end - mode->crtc_vblank_start) & 0xffff) 177 | ((mode->crtc_vdisplay - 1) << 16)); 178 179 vsync_wid = mode->crtc_vsync_end - mode->crtc_vsync_start; 180 if (!vsync_wid) 181 vsync_wid = 1; 182 183 fp_v_sync_strt_wid = ((((mode->crtc_vsync_start - mode->crtc_vblank_start) & 0xfff) 184 | ((vsync_wid & 0x1f) << 16) 185 | ((mode->flags & DRM_MODE_FLAG_NVSYNC) 186 ? RADEON_CRTC_V_SYNC_POL 187 : 0))); 188 189 fp_horz_vert_active = (((native_mode->vdisplay) & 0xfff) | 190 (((native_mode->hdisplay / 8) & 0x1ff) << 16)); 191 break; 192 case RMX_OFF: 193 default: 194 fp_horz_stretch |= ((xres/8-1) << 16); 195 fp_vert_stretch |= ((yres-1) << 12); 196 break; 197 } 198 199 WREG32(RADEON_FP_HORZ_STRETCH, fp_horz_stretch); 200 WREG32(RADEON_FP_VERT_STRETCH, fp_vert_stretch); 201 WREG32(RADEON_CRTC_MORE_CNTL, crtc_more_cntl); 202 WREG32(RADEON_FP_HORZ_VERT_ACTIVE, fp_horz_vert_active); 203 WREG32(RADEON_FP_H_SYNC_STRT_WID, fp_h_sync_strt_wid); 204 WREG32(RADEON_FP_V_SYNC_STRT_WID, fp_v_sync_strt_wid); 205 WREG32(RADEON_FP_CRTC_H_TOTAL_DISP, fp_crtc_h_total_disp); 206 WREG32(RADEON_FP_CRTC_V_TOTAL_DISP, fp_crtc_v_total_disp); 207 } 208 209 static void radeon_pll_wait_for_read_update_complete(struct drm_device *dev) 210 { 211 struct radeon_device *rdev = dev->dev_private; 212 int i = 0; 213 214 /* FIXME: Certain revisions of R300 can't recover here. Not sure of 215 the cause yet, but this workaround will mask the problem for now. 216 Other chips usually will pass at the very first test, so the 217 workaround shouldn't have any effect on them. */ 218 for (i = 0; 219 (i < 10000 && 220 RREG32_PLL(RADEON_PPLL_REF_DIV) & RADEON_PPLL_ATOMIC_UPDATE_R); 221 i++); 222 } 223 224 static void radeon_pll_write_update(struct drm_device *dev) 225 { 226 struct radeon_device *rdev = dev->dev_private; 227 228 while (RREG32_PLL(RADEON_PPLL_REF_DIV) & RADEON_PPLL_ATOMIC_UPDATE_R); 229 230 WREG32_PLL_P(RADEON_PPLL_REF_DIV, 231 RADEON_PPLL_ATOMIC_UPDATE_W, 232 ~(RADEON_PPLL_ATOMIC_UPDATE_W)); 233 } 234 235 static void radeon_pll2_wait_for_read_update_complete(struct drm_device *dev) 236 { 237 struct radeon_device *rdev = dev->dev_private; 238 int i = 0; 239 240 241 /* FIXME: Certain revisions of R300 can't recover here. Not sure of 242 the cause yet, but this workaround will mask the problem for now. 243 Other chips usually will pass at the very first test, so the 244 workaround shouldn't have any effect on them. */ 245 for (i = 0; 246 (i < 10000 && 247 RREG32_PLL(RADEON_P2PLL_REF_DIV) & RADEON_P2PLL_ATOMIC_UPDATE_R); 248 i++); 249 } 250 251 static void radeon_pll2_write_update(struct drm_device *dev) 252 { 253 struct radeon_device *rdev = dev->dev_private; 254 255 while (RREG32_PLL(RADEON_P2PLL_REF_DIV) & RADEON_P2PLL_ATOMIC_UPDATE_R); 256 257 WREG32_PLL_P(RADEON_P2PLL_REF_DIV, 258 RADEON_P2PLL_ATOMIC_UPDATE_W, 259 ~(RADEON_P2PLL_ATOMIC_UPDATE_W)); 260 } 261 262 static uint8_t radeon_compute_pll_gain(uint16_t ref_freq, uint16_t ref_div, 263 uint16_t fb_div) 264 { 265 unsigned int vcoFreq; 266 267 if (!ref_div) 268 return 1; 269 270 vcoFreq = ((unsigned)ref_freq * fb_div) / ref_div; 271 272 /* 273 * This is horribly crude: the VCO frequency range is divided into 274 * 3 parts, each part having a fixed PLL gain value. 275 */ 276 if (vcoFreq >= 30000) 277 /* 278 * [300..max] MHz : 7 279 */ 280 return 7; 281 else if (vcoFreq >= 18000) 282 /* 283 * [180..300) MHz : 4 284 */ 285 return 4; 286 else 287 /* 288 * [0..180) MHz : 1 289 */ 290 return 1; 291 } 292 293 static void radeon_crtc_dpms(struct drm_crtc *crtc, int mode) 294 { 295 struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc); 296 struct drm_device *dev = crtc->dev; 297 struct radeon_device *rdev = dev->dev_private; 298 uint32_t crtc_ext_cntl = 0; 299 uint32_t mask; 300 301 if (radeon_crtc->crtc_id) 302 mask = (RADEON_CRTC2_DISP_DIS | 303 RADEON_CRTC2_VSYNC_DIS | 304 RADEON_CRTC2_HSYNC_DIS | 305 RADEON_CRTC2_DISP_REQ_EN_B); 306 else 307 mask = (RADEON_CRTC_DISPLAY_DIS | 308 RADEON_CRTC_VSYNC_DIS | 309 RADEON_CRTC_HSYNC_DIS); 310 311 /* 312 * On all dual CRTC GPUs this bit controls the CRTC of the primary DAC. 313 * Therefore it is set in the DAC DMPS function. 314 * This is different for GPU's with a single CRTC but a primary and a 315 * TV DAC: here it controls the single CRTC no matter where it is 316 * routed. Therefore we set it here. 317 */ 318 if (rdev->flags & RADEON_SINGLE_CRTC) 319 crtc_ext_cntl = RADEON_CRTC_CRT_ON; 320 321 switch (mode) { 322 case DRM_MODE_DPMS_ON: 323 radeon_crtc->enabled = true; 324 /* adjust pm to dpms changes BEFORE enabling crtcs */ 325 radeon_pm_compute_clocks(rdev); 326 if (radeon_crtc->crtc_id) 327 WREG32_P(RADEON_CRTC2_GEN_CNTL, RADEON_CRTC2_EN, ~(RADEON_CRTC2_EN | mask)); 328 else { 329 WREG32_P(RADEON_CRTC_GEN_CNTL, RADEON_CRTC_EN, ~(RADEON_CRTC_EN | 330 RADEON_CRTC_DISP_REQ_EN_B)); 331 WREG32_P(RADEON_CRTC_EXT_CNTL, crtc_ext_cntl, ~(mask | crtc_ext_cntl)); 332 } 333 drm_vblank_post_modeset(dev, radeon_crtc->crtc_id); 334 radeon_crtc_load_lut(crtc); 335 break; 336 case DRM_MODE_DPMS_STANDBY: 337 case DRM_MODE_DPMS_SUSPEND: 338 case DRM_MODE_DPMS_OFF: 339 drm_vblank_pre_modeset(dev, radeon_crtc->crtc_id); 340 if (radeon_crtc->crtc_id) 341 WREG32_P(RADEON_CRTC2_GEN_CNTL, mask, ~(RADEON_CRTC2_EN | mask)); 342 else { 343 WREG32_P(RADEON_CRTC_GEN_CNTL, RADEON_CRTC_DISP_REQ_EN_B, ~(RADEON_CRTC_EN | 344 RADEON_CRTC_DISP_REQ_EN_B)); 345 WREG32_P(RADEON_CRTC_EXT_CNTL, mask, ~(mask | crtc_ext_cntl)); 346 } 347 radeon_crtc->enabled = false; 348 /* adjust pm to dpms changes AFTER disabling crtcs */ 349 radeon_pm_compute_clocks(rdev); 350 break; 351 } 352 } 353 354 int radeon_crtc_set_base(struct drm_crtc *crtc, int x, int y, 355 struct drm_framebuffer *old_fb) 356 { 357 return radeon_crtc_do_set_base(crtc, old_fb, x, y, 0); 358 } 359 360 int radeon_crtc_set_base_atomic(struct drm_crtc *crtc, 361 struct drm_framebuffer *fb, 362 int x, int y, enum mode_set_atomic state) 363 { 364 return radeon_crtc_do_set_base(crtc, fb, x, y, 1); 365 } 366 367 int radeon_crtc_do_set_base(struct drm_crtc *crtc, 368 struct drm_framebuffer *fb, 369 int x, int y, int atomic) 370 { 371 struct drm_device *dev = crtc->dev; 372 struct radeon_device *rdev = dev->dev_private; 373 struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc); 374 struct radeon_framebuffer *radeon_fb; 375 struct drm_framebuffer *target_fb; 376 struct drm_gem_object *obj; 377 struct radeon_bo *rbo; 378 uint64_t base; 379 uint32_t crtc_offset, crtc_offset_cntl, crtc_tile_x0_y0 = 0; 380 uint32_t crtc_pitch, pitch_pixels; 381 uint32_t tiling_flags; 382 int format; 383 uint32_t gen_cntl_reg, gen_cntl_val; 384 int r; 385 386 DRM_DEBUG_KMS("\n"); 387 /* no fb bound */ 388 if (!atomic && !crtc->fb) { 389 DRM_DEBUG_KMS("No FB bound\n"); 390 return 0; 391 } 392 393 if (atomic) { 394 radeon_fb = to_radeon_framebuffer(fb); 395 target_fb = fb; 396 } 397 else { 398 radeon_fb = to_radeon_framebuffer(crtc->fb); 399 target_fb = crtc->fb; 400 } 401 402 switch (target_fb->bits_per_pixel) { 403 case 8: 404 format = 2; 405 break; 406 case 15: /* 555 */ 407 format = 3; 408 break; 409 case 16: /* 565 */ 410 format = 4; 411 break; 412 case 24: /* RGB */ 413 format = 5; 414 break; 415 case 32: /* xRGB */ 416 format = 6; 417 break; 418 default: 419 return false; 420 } 421 422 /* Pin framebuffer & get tilling informations */ 423 obj = radeon_fb->obj; 424 rbo = gem_to_radeon_bo(obj); 425 r = radeon_bo_reserve(rbo, false); 426 if (unlikely(r != 0)) 427 return r; 428 /* Only 27 bit offset for legacy CRTC */ 429 r = radeon_bo_pin_restricted(rbo, RADEON_GEM_DOMAIN_VRAM, 1 << 27, 430 &base); 431 if (unlikely(r != 0)) { 432 radeon_bo_unreserve(rbo); 433 return -EINVAL; 434 } 435 radeon_bo_get_tiling_flags(rbo, &tiling_flags, NULL); 436 radeon_bo_unreserve(rbo); 437 if (tiling_flags & RADEON_TILING_MICRO) 438 DRM_ERROR("trying to scanout microtiled buffer\n"); 439 440 /* if scanout was in GTT this really wouldn't work */ 441 /* crtc offset is from display base addr not FB location */ 442 radeon_crtc->legacy_display_base_addr = rdev->mc.vram_start; 443 444 base -= radeon_crtc->legacy_display_base_addr; 445 446 crtc_offset_cntl = 0; 447 448 pitch_pixels = target_fb->pitches[0] / (target_fb->bits_per_pixel / 8); 449 crtc_pitch = (((pitch_pixels * target_fb->bits_per_pixel) + 450 ((target_fb->bits_per_pixel * 8) - 1)) / 451 (target_fb->bits_per_pixel * 8)); 452 crtc_pitch |= crtc_pitch << 16; 453 454 crtc_offset_cntl |= RADEON_CRTC_GUI_TRIG_OFFSET_LEFT_EN; 455 if (tiling_flags & RADEON_TILING_MACRO) { 456 if (ASIC_IS_R300(rdev)) 457 crtc_offset_cntl |= (R300_CRTC_X_Y_MODE_EN | 458 R300_CRTC_MICRO_TILE_BUFFER_DIS | 459 R300_CRTC_MACRO_TILE_EN); 460 else 461 crtc_offset_cntl |= RADEON_CRTC_TILE_EN; 462 } else { 463 if (ASIC_IS_R300(rdev)) 464 crtc_offset_cntl &= ~(R300_CRTC_X_Y_MODE_EN | 465 R300_CRTC_MICRO_TILE_BUFFER_DIS | 466 R300_CRTC_MACRO_TILE_EN); 467 else 468 crtc_offset_cntl &= ~RADEON_CRTC_TILE_EN; 469 } 470 471 if (tiling_flags & RADEON_TILING_MACRO) { 472 if (ASIC_IS_R300(rdev)) { 473 crtc_tile_x0_y0 = x | (y << 16); 474 base &= ~0x7ff; 475 } else { 476 int byteshift = target_fb->bits_per_pixel >> 4; 477 int tile_addr = (((y >> 3) * pitch_pixels + x) >> (8 - byteshift)) << 11; 478 base += tile_addr + ((x << byteshift) % 256) + ((y % 8) << 8); 479 crtc_offset_cntl |= (y % 16); 480 } 481 } else { 482 int offset = y * pitch_pixels + x; 483 switch (target_fb->bits_per_pixel) { 484 case 8: 485 offset *= 1; 486 break; 487 case 15: 488 case 16: 489 offset *= 2; 490 break; 491 case 24: 492 offset *= 3; 493 break; 494 case 32: 495 offset *= 4; 496 break; 497 default: 498 return false; 499 } 500 base += offset; 501 } 502 503 base &= ~7; 504 505 if (radeon_crtc->crtc_id == 1) 506 gen_cntl_reg = RADEON_CRTC2_GEN_CNTL; 507 else 508 gen_cntl_reg = RADEON_CRTC_GEN_CNTL; 509 510 gen_cntl_val = RREG32(gen_cntl_reg); 511 gen_cntl_val &= ~(0xf << 8); 512 gen_cntl_val |= (format << 8); 513 gen_cntl_val &= ~RADEON_CRTC_VSTAT_MODE_MASK; 514 WREG32(gen_cntl_reg, gen_cntl_val); 515 516 crtc_offset = (u32)base; 517 518 WREG32(RADEON_DISPLAY_BASE_ADDR + radeon_crtc->crtc_offset, radeon_crtc->legacy_display_base_addr); 519 520 if (ASIC_IS_R300(rdev)) { 521 if (radeon_crtc->crtc_id) 522 WREG32(R300_CRTC2_TILE_X0_Y0, crtc_tile_x0_y0); 523 else 524 WREG32(R300_CRTC_TILE_X0_Y0, crtc_tile_x0_y0); 525 } 526 WREG32(RADEON_CRTC_OFFSET_CNTL + radeon_crtc->crtc_offset, crtc_offset_cntl); 527 WREG32(RADEON_CRTC_OFFSET + radeon_crtc->crtc_offset, crtc_offset); 528 WREG32(RADEON_CRTC_PITCH + radeon_crtc->crtc_offset, crtc_pitch); 529 530 if (!atomic && fb && fb != crtc->fb) { 531 radeon_fb = to_radeon_framebuffer(fb); 532 rbo = gem_to_radeon_bo(radeon_fb->obj); 533 r = radeon_bo_reserve(rbo, false); 534 if (unlikely(r != 0)) 535 return r; 536 radeon_bo_unpin(rbo); 537 radeon_bo_unreserve(rbo); 538 } 539 540 /* Bytes per pixel may have changed */ 541 radeon_bandwidth_update(rdev); 542 543 return 0; 544 } 545 546 static bool radeon_set_crtc_timing(struct drm_crtc *crtc, struct drm_display_mode *mode) 547 { 548 struct drm_device *dev = crtc->dev; 549 struct radeon_device *rdev = dev->dev_private; 550 struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc); 551 struct drm_encoder *encoder; 552 int format; 553 int hsync_start; 554 int hsync_wid; 555 int vsync_wid; 556 uint32_t crtc_h_total_disp; 557 uint32_t crtc_h_sync_strt_wid; 558 uint32_t crtc_v_total_disp; 559 uint32_t crtc_v_sync_strt_wid; 560 bool is_tv = false; 561 562 DRM_DEBUG_KMS("\n"); 563 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { 564 if (encoder->crtc == crtc) { 565 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder); 566 if (radeon_encoder->active_device & ATOM_DEVICE_TV_SUPPORT) { 567 is_tv = true; 568 DRM_INFO("crtc %d is connected to a TV\n", radeon_crtc->crtc_id); 569 break; 570 } 571 } 572 } 573 574 switch (crtc->fb->bits_per_pixel) { 575 case 8: 576 format = 2; 577 break; 578 case 15: /* 555 */ 579 format = 3; 580 break; 581 case 16: /* 565 */ 582 format = 4; 583 break; 584 case 24: /* RGB */ 585 format = 5; 586 break; 587 case 32: /* xRGB */ 588 format = 6; 589 break; 590 default: 591 return false; 592 } 593 594 crtc_h_total_disp = ((((mode->crtc_htotal / 8) - 1) & 0x3ff) 595 | ((((mode->crtc_hdisplay / 8) - 1) & 0x1ff) << 16)); 596 597 hsync_wid = (mode->crtc_hsync_end - mode->crtc_hsync_start) / 8; 598 if (!hsync_wid) 599 hsync_wid = 1; 600 hsync_start = mode->crtc_hsync_start - 8; 601 602 crtc_h_sync_strt_wid = ((hsync_start & 0x1fff) 603 | ((hsync_wid & 0x3f) << 16) 604 | ((mode->flags & DRM_MODE_FLAG_NHSYNC) 605 ? RADEON_CRTC_H_SYNC_POL 606 : 0)); 607 608 /* This works for double scan mode. */ 609 crtc_v_total_disp = (((mode->crtc_vtotal - 1) & 0xffff) 610 | ((mode->crtc_vdisplay - 1) << 16)); 611 612 vsync_wid = mode->crtc_vsync_end - mode->crtc_vsync_start; 613 if (!vsync_wid) 614 vsync_wid = 1; 615 616 crtc_v_sync_strt_wid = (((mode->crtc_vsync_start - 1) & 0xfff) 617 | ((vsync_wid & 0x1f) << 16) 618 | ((mode->flags & DRM_MODE_FLAG_NVSYNC) 619 ? RADEON_CRTC_V_SYNC_POL 620 : 0)); 621 622 if (radeon_crtc->crtc_id) { 623 uint32_t crtc2_gen_cntl; 624 uint32_t disp2_merge_cntl; 625 626 /* if TV DAC is enabled for another crtc and keep it enabled */ 627 crtc2_gen_cntl = RREG32(RADEON_CRTC2_GEN_CNTL) & 0x00718080; 628 crtc2_gen_cntl |= ((format << 8) 629 | RADEON_CRTC2_VSYNC_DIS 630 | RADEON_CRTC2_HSYNC_DIS 631 | RADEON_CRTC2_DISP_DIS 632 | RADEON_CRTC2_DISP_REQ_EN_B 633 | ((mode->flags & DRM_MODE_FLAG_DBLSCAN) 634 ? RADEON_CRTC2_DBL_SCAN_EN 635 : 0) 636 | ((mode->flags & DRM_MODE_FLAG_CSYNC) 637 ? RADEON_CRTC2_CSYNC_EN 638 : 0) 639 | ((mode->flags & DRM_MODE_FLAG_INTERLACE) 640 ? RADEON_CRTC2_INTERLACE_EN 641 : 0)); 642 643 /* rs4xx chips seem to like to have the crtc enabled when the timing is set */ 644 if ((rdev->family == CHIP_RS400) || (rdev->family == CHIP_RS480)) 645 crtc2_gen_cntl |= RADEON_CRTC2_EN; 646 647 disp2_merge_cntl = RREG32(RADEON_DISP2_MERGE_CNTL); 648 disp2_merge_cntl &= ~RADEON_DISP2_RGB_OFFSET_EN; 649 650 WREG32(RADEON_DISP2_MERGE_CNTL, disp2_merge_cntl); 651 WREG32(RADEON_CRTC2_GEN_CNTL, crtc2_gen_cntl); 652 653 WREG32(RADEON_FP_H2_SYNC_STRT_WID, crtc_h_sync_strt_wid); 654 WREG32(RADEON_FP_V2_SYNC_STRT_WID, crtc_v_sync_strt_wid); 655 } else { 656 uint32_t crtc_gen_cntl; 657 uint32_t crtc_ext_cntl; 658 uint32_t disp_merge_cntl; 659 660 crtc_gen_cntl = RREG32(RADEON_CRTC_GEN_CNTL) & 0x00718000; 661 crtc_gen_cntl |= (RADEON_CRTC_EXT_DISP_EN 662 | (format << 8) 663 | RADEON_CRTC_DISP_REQ_EN_B 664 | ((mode->flags & DRM_MODE_FLAG_DBLSCAN) 665 ? RADEON_CRTC_DBL_SCAN_EN 666 : 0) 667 | ((mode->flags & DRM_MODE_FLAG_CSYNC) 668 ? RADEON_CRTC_CSYNC_EN 669 : 0) 670 | ((mode->flags & DRM_MODE_FLAG_INTERLACE) 671 ? RADEON_CRTC_INTERLACE_EN 672 : 0)); 673 674 /* rs4xx chips seem to like to have the crtc enabled when the timing is set */ 675 if ((rdev->family == CHIP_RS400) || (rdev->family == CHIP_RS480)) 676 crtc_gen_cntl |= RADEON_CRTC_EN; 677 678 crtc_ext_cntl = RREG32(RADEON_CRTC_EXT_CNTL); 679 crtc_ext_cntl |= (RADEON_XCRT_CNT_EN | 680 RADEON_CRTC_VSYNC_DIS | 681 RADEON_CRTC_HSYNC_DIS | 682 RADEON_CRTC_DISPLAY_DIS); 683 684 disp_merge_cntl = RREG32(RADEON_DISP_MERGE_CNTL); 685 disp_merge_cntl &= ~RADEON_DISP_RGB_OFFSET_EN; 686 687 WREG32(RADEON_DISP_MERGE_CNTL, disp_merge_cntl); 688 WREG32(RADEON_CRTC_GEN_CNTL, crtc_gen_cntl); 689 WREG32(RADEON_CRTC_EXT_CNTL, crtc_ext_cntl); 690 } 691 692 if (is_tv) 693 radeon_legacy_tv_adjust_crtc_reg(encoder, &crtc_h_total_disp, 694 &crtc_h_sync_strt_wid, &crtc_v_total_disp, 695 &crtc_v_sync_strt_wid); 696 697 WREG32(RADEON_CRTC_H_TOTAL_DISP + radeon_crtc->crtc_offset, crtc_h_total_disp); 698 WREG32(RADEON_CRTC_H_SYNC_STRT_WID + radeon_crtc->crtc_offset, crtc_h_sync_strt_wid); 699 WREG32(RADEON_CRTC_V_TOTAL_DISP + radeon_crtc->crtc_offset, crtc_v_total_disp); 700 WREG32(RADEON_CRTC_V_SYNC_STRT_WID + radeon_crtc->crtc_offset, crtc_v_sync_strt_wid); 701 702 return true; 703 } 704 705 static void radeon_set_pll(struct drm_crtc *crtc, struct drm_display_mode *mode) 706 { 707 struct drm_device *dev = crtc->dev; 708 struct radeon_device *rdev = dev->dev_private; 709 struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc); 710 struct drm_encoder *encoder; 711 uint32_t feedback_div = 0; 712 uint32_t frac_fb_div = 0; 713 uint32_t reference_div = 0; 714 uint32_t post_divider = 0; 715 uint32_t freq = 0; 716 uint8_t pll_gain; 717 bool use_bios_divs = false; 718 /* PLL registers */ 719 uint32_t pll_ref_div = 0; 720 uint32_t pll_fb_post_div = 0; 721 uint32_t htotal_cntl = 0; 722 bool is_tv = false; 723 struct radeon_pll *pll; 724 725 struct { 726 int divider; 727 int bitvalue; 728 } *post_div, post_divs[] = { 729 /* From RAGE 128 VR/RAGE 128 GL Register 730 * Reference Manual (Technical Reference 731 * Manual P/N RRG-G04100-C Rev. 0.04), page 732 * 3-17 (PLL_DIV_[3:0]). 733 */ 734 { 1, 0 }, /* VCLK_SRC */ 735 { 2, 1 }, /* VCLK_SRC/2 */ 736 { 4, 2 }, /* VCLK_SRC/4 */ 737 { 8, 3 }, /* VCLK_SRC/8 */ 738 { 3, 4 }, /* VCLK_SRC/3 */ 739 { 16, 5 }, /* VCLK_SRC/16 */ 740 { 6, 6 }, /* VCLK_SRC/6 */ 741 { 12, 7 }, /* VCLK_SRC/12 */ 742 { 0, 0 } 743 }; 744 745 if (radeon_crtc->crtc_id) 746 pll = &rdev->clock.p2pll; 747 else 748 pll = &rdev->clock.p1pll; 749 750 pll->flags = RADEON_PLL_LEGACY; 751 752 if (mode->clock > 200000) /* range limits??? */ 753 pll->flags |= RADEON_PLL_PREFER_HIGH_FB_DIV; 754 else 755 pll->flags |= RADEON_PLL_PREFER_LOW_REF_DIV; 756 757 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { 758 if (encoder->crtc == crtc) { 759 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder); 760 761 if (radeon_encoder->active_device & ATOM_DEVICE_TV_SUPPORT) { 762 is_tv = true; 763 break; 764 } 765 766 if (encoder->encoder_type != DRM_MODE_ENCODER_DAC) 767 pll->flags |= RADEON_PLL_NO_ODD_POST_DIV; 768 if (encoder->encoder_type == DRM_MODE_ENCODER_LVDS) { 769 if (!rdev->is_atom_bios) { 770 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder); 771 struct radeon_encoder_lvds *lvds = (struct radeon_encoder_lvds *)radeon_encoder->enc_priv; 772 if (lvds) { 773 if (lvds->use_bios_dividers) { 774 pll_ref_div = lvds->panel_ref_divider; 775 pll_fb_post_div = (lvds->panel_fb_divider | 776 (lvds->panel_post_divider << 16)); 777 htotal_cntl = 0; 778 use_bios_divs = true; 779 } 780 } 781 } 782 pll->flags |= RADEON_PLL_USE_REF_DIV; 783 } 784 } 785 } 786 787 DRM_DEBUG_KMS("\n"); 788 789 if (!use_bios_divs) { 790 radeon_compute_pll_legacy(pll, mode->clock, 791 &freq, &feedback_div, &frac_fb_div, 792 &reference_div, &post_divider); 793 794 for (post_div = &post_divs[0]; post_div->divider; ++post_div) { 795 if (post_div->divider == post_divider) 796 break; 797 } 798 799 if (!post_div->divider) 800 post_div = &post_divs[0]; 801 802 DRM_DEBUG_KMS("dc=%u, fd=%d, rd=%d, pd=%d\n", 803 (unsigned)freq, 804 feedback_div, 805 reference_div, 806 post_divider); 807 808 pll_ref_div = reference_div; 809 #if defined(__powerpc__) && (0) /* TODO */ 810 /* apparently programming this otherwise causes a hang??? */ 811 if (info->MacModel == RADEON_MAC_IBOOK) 812 pll_fb_post_div = 0x000600ad; 813 else 814 #endif 815 pll_fb_post_div = (feedback_div | (post_div->bitvalue << 16)); 816 817 htotal_cntl = mode->htotal & 0x7; 818 819 } 820 821 pll_gain = radeon_compute_pll_gain(pll->reference_freq, 822 pll_ref_div & 0x3ff, 823 pll_fb_post_div & 0x7ff); 824 825 if (radeon_crtc->crtc_id) { 826 uint32_t pixclks_cntl = ((RREG32_PLL(RADEON_PIXCLKS_CNTL) & 827 ~(RADEON_PIX2CLK_SRC_SEL_MASK)) | 828 RADEON_PIX2CLK_SRC_SEL_P2PLLCLK); 829 830 if (is_tv) { 831 radeon_legacy_tv_adjust_pll2(encoder, &htotal_cntl, 832 &pll_ref_div, &pll_fb_post_div, 833 &pixclks_cntl); 834 } 835 836 WREG32_PLL_P(RADEON_PIXCLKS_CNTL, 837 RADEON_PIX2CLK_SRC_SEL_CPUCLK, 838 ~(RADEON_PIX2CLK_SRC_SEL_MASK)); 839 840 WREG32_PLL_P(RADEON_P2PLL_CNTL, 841 RADEON_P2PLL_RESET 842 | RADEON_P2PLL_ATOMIC_UPDATE_EN 843 | ((uint32_t)pll_gain << RADEON_P2PLL_PVG_SHIFT), 844 ~(RADEON_P2PLL_RESET 845 | RADEON_P2PLL_ATOMIC_UPDATE_EN 846 | RADEON_P2PLL_PVG_MASK)); 847 848 WREG32_PLL_P(RADEON_P2PLL_REF_DIV, 849 pll_ref_div, 850 ~RADEON_P2PLL_REF_DIV_MASK); 851 852 WREG32_PLL_P(RADEON_P2PLL_DIV_0, 853 pll_fb_post_div, 854 ~RADEON_P2PLL_FB0_DIV_MASK); 855 856 WREG32_PLL_P(RADEON_P2PLL_DIV_0, 857 pll_fb_post_div, 858 ~RADEON_P2PLL_POST0_DIV_MASK); 859 860 radeon_pll2_write_update(dev); 861 radeon_pll2_wait_for_read_update_complete(dev); 862 863 WREG32_PLL(RADEON_HTOTAL2_CNTL, htotal_cntl); 864 865 WREG32_PLL_P(RADEON_P2PLL_CNTL, 866 0, 867 ~(RADEON_P2PLL_RESET 868 | RADEON_P2PLL_SLEEP 869 | RADEON_P2PLL_ATOMIC_UPDATE_EN)); 870 871 DRM_DEBUG_KMS("Wrote2: 0x%08x 0x%08x 0x%08x (0x%08x)\n", 872 (unsigned)pll_ref_div, 873 (unsigned)pll_fb_post_div, 874 (unsigned)htotal_cntl, 875 RREG32_PLL(RADEON_P2PLL_CNTL)); 876 DRM_DEBUG_KMS("Wrote2: rd=%u, fd=%u, pd=%u\n", 877 (unsigned)pll_ref_div & RADEON_P2PLL_REF_DIV_MASK, 878 (unsigned)pll_fb_post_div & RADEON_P2PLL_FB0_DIV_MASK, 879 (unsigned)((pll_fb_post_div & 880 RADEON_P2PLL_POST0_DIV_MASK) >> 16)); 881 882 mdelay(50); /* Let the clock to lock */ 883 884 WREG32_PLL_P(RADEON_PIXCLKS_CNTL, 885 RADEON_PIX2CLK_SRC_SEL_P2PLLCLK, 886 ~(RADEON_PIX2CLK_SRC_SEL_MASK)); 887 888 WREG32_PLL(RADEON_PIXCLKS_CNTL, pixclks_cntl); 889 } else { 890 uint32_t pixclks_cntl; 891 892 893 if (is_tv) { 894 pixclks_cntl = RREG32_PLL(RADEON_PIXCLKS_CNTL); 895 radeon_legacy_tv_adjust_pll1(encoder, &htotal_cntl, &pll_ref_div, 896 &pll_fb_post_div, &pixclks_cntl); 897 } 898 899 if (rdev->flags & RADEON_IS_MOBILITY) { 900 /* A temporal workaround for the occasional blanking on certain laptop panels. 901 This appears to related to the PLL divider registers (fail to lock?). 902 It occurs even when all dividers are the same with their old settings. 903 In this case we really don't need to fiddle with PLL registers. 904 By doing this we can avoid the blanking problem with some panels. 905 */ 906 if ((pll_ref_div == (RREG32_PLL(RADEON_PPLL_REF_DIV) & RADEON_PPLL_REF_DIV_MASK)) && 907 (pll_fb_post_div == (RREG32_PLL(RADEON_PPLL_DIV_3) & 908 (RADEON_PPLL_POST3_DIV_MASK | RADEON_PPLL_FB3_DIV_MASK)))) { 909 WREG32_P(RADEON_CLOCK_CNTL_INDEX, 910 RADEON_PLL_DIV_SEL, 911 ~(RADEON_PLL_DIV_SEL)); 912 r100_pll_errata_after_index(rdev); 913 return; 914 } 915 } 916 917 WREG32_PLL_P(RADEON_VCLK_ECP_CNTL, 918 RADEON_VCLK_SRC_SEL_CPUCLK, 919 ~(RADEON_VCLK_SRC_SEL_MASK)); 920 WREG32_PLL_P(RADEON_PPLL_CNTL, 921 RADEON_PPLL_RESET 922 | RADEON_PPLL_ATOMIC_UPDATE_EN 923 | RADEON_PPLL_VGA_ATOMIC_UPDATE_EN 924 | ((uint32_t)pll_gain << RADEON_PPLL_PVG_SHIFT), 925 ~(RADEON_PPLL_RESET 926 | RADEON_PPLL_ATOMIC_UPDATE_EN 927 | RADEON_PPLL_VGA_ATOMIC_UPDATE_EN 928 | RADEON_PPLL_PVG_MASK)); 929 930 WREG32_P(RADEON_CLOCK_CNTL_INDEX, 931 RADEON_PLL_DIV_SEL, 932 ~(RADEON_PLL_DIV_SEL)); 933 r100_pll_errata_after_index(rdev); 934 935 if (ASIC_IS_R300(rdev) || 936 (rdev->family == CHIP_RS300) || 937 (rdev->family == CHIP_RS400) || 938 (rdev->family == CHIP_RS480)) { 939 if (pll_ref_div & R300_PPLL_REF_DIV_ACC_MASK) { 940 /* When restoring console mode, use saved PPLL_REF_DIV 941 * setting. 942 */ 943 WREG32_PLL_P(RADEON_PPLL_REF_DIV, 944 pll_ref_div, 945 0); 946 } else { 947 /* R300 uses ref_div_acc field as real ref divider */ 948 WREG32_PLL_P(RADEON_PPLL_REF_DIV, 949 (pll_ref_div << R300_PPLL_REF_DIV_ACC_SHIFT), 950 ~R300_PPLL_REF_DIV_ACC_MASK); 951 } 952 } else 953 WREG32_PLL_P(RADEON_PPLL_REF_DIV, 954 pll_ref_div, 955 ~RADEON_PPLL_REF_DIV_MASK); 956 957 WREG32_PLL_P(RADEON_PPLL_DIV_3, 958 pll_fb_post_div, 959 ~RADEON_PPLL_FB3_DIV_MASK); 960 961 WREG32_PLL_P(RADEON_PPLL_DIV_3, 962 pll_fb_post_div, 963 ~RADEON_PPLL_POST3_DIV_MASK); 964 965 radeon_pll_write_update(dev); 966 radeon_pll_wait_for_read_update_complete(dev); 967 968 WREG32_PLL(RADEON_HTOTAL_CNTL, htotal_cntl); 969 970 WREG32_PLL_P(RADEON_PPLL_CNTL, 971 0, 972 ~(RADEON_PPLL_RESET 973 | RADEON_PPLL_SLEEP 974 | RADEON_PPLL_ATOMIC_UPDATE_EN 975 | RADEON_PPLL_VGA_ATOMIC_UPDATE_EN)); 976 977 DRM_DEBUG_KMS("Wrote: 0x%08x 0x%08x 0x%08x (0x%08x)\n", 978 pll_ref_div, 979 pll_fb_post_div, 980 (unsigned)htotal_cntl, 981 RREG32_PLL(RADEON_PPLL_CNTL)); 982 DRM_DEBUG_KMS("Wrote: rd=%d, fd=%d, pd=%d\n", 983 pll_ref_div & RADEON_PPLL_REF_DIV_MASK, 984 pll_fb_post_div & RADEON_PPLL_FB3_DIV_MASK, 985 (pll_fb_post_div & RADEON_PPLL_POST3_DIV_MASK) >> 16); 986 987 mdelay(50); /* Let the clock to lock */ 988 989 WREG32_PLL_P(RADEON_VCLK_ECP_CNTL, 990 RADEON_VCLK_SRC_SEL_PPLLCLK, 991 ~(RADEON_VCLK_SRC_SEL_MASK)); 992 993 if (is_tv) 994 WREG32_PLL(RADEON_PIXCLKS_CNTL, pixclks_cntl); 995 } 996 } 997 998 static bool radeon_crtc_mode_fixup(struct drm_crtc *crtc, 999 const struct drm_display_mode *mode, 1000 struct drm_display_mode *adjusted_mode) 1001 { 1002 if (!radeon_crtc_scaling_mode_fixup(crtc, mode, adjusted_mode)) 1003 return false; 1004 return true; 1005 } 1006 1007 static int radeon_crtc_mode_set(struct drm_crtc *crtc, 1008 struct drm_display_mode *mode, 1009 struct drm_display_mode *adjusted_mode, 1010 int x, int y, struct drm_framebuffer *old_fb) 1011 { 1012 struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc); 1013 1014 /* TODO TV */ 1015 radeon_crtc_set_base(crtc, x, y, old_fb); 1016 radeon_set_crtc_timing(crtc, adjusted_mode); 1017 radeon_set_pll(crtc, adjusted_mode); 1018 radeon_overscan_setup(crtc, adjusted_mode); 1019 if (radeon_crtc->crtc_id == 0) { 1020 radeon_legacy_rmx_mode_set(crtc, adjusted_mode); 1021 } else { 1022 if (radeon_crtc->rmx_type != RMX_OFF) { 1023 /* FIXME: only first crtc has rmx what should we 1024 * do ? 1025 */ 1026 DRM_ERROR("Mode need scaling but only first crtc can do that.\n"); 1027 } 1028 } 1029 return 0; 1030 } 1031 1032 static void radeon_crtc_prepare(struct drm_crtc *crtc) 1033 { 1034 struct drm_device *dev = crtc->dev; 1035 struct drm_crtc *crtci; 1036 1037 /* 1038 * The hardware wedges sometimes if you reconfigure one CRTC 1039 * whilst another is running (see fdo bug #24611). 1040 */ 1041 list_for_each_entry(crtci, &dev->mode_config.crtc_list, head) 1042 radeon_crtc_dpms(crtci, DRM_MODE_DPMS_OFF); 1043 } 1044 1045 static void radeon_crtc_commit(struct drm_crtc *crtc) 1046 { 1047 struct drm_device *dev = crtc->dev; 1048 struct drm_crtc *crtci; 1049 1050 /* 1051 * Reenable the CRTCs that should be running. 1052 */ 1053 list_for_each_entry(crtci, &dev->mode_config.crtc_list, head) { 1054 if (crtci->enabled) 1055 radeon_crtc_dpms(crtci, DRM_MODE_DPMS_ON); 1056 } 1057 } 1058 1059 static const struct drm_crtc_helper_funcs legacy_helper_funcs = { 1060 .dpms = radeon_crtc_dpms, 1061 .mode_fixup = radeon_crtc_mode_fixup, 1062 .mode_set = radeon_crtc_mode_set, 1063 .mode_set_base = radeon_crtc_set_base, 1064 .mode_set_base_atomic = radeon_crtc_set_base_atomic, 1065 .prepare = radeon_crtc_prepare, 1066 .commit = radeon_crtc_commit, 1067 .load_lut = radeon_crtc_load_lut, 1068 }; 1069 1070 1071 void radeon_legacy_init_crtc(struct drm_device *dev, 1072 struct radeon_crtc *radeon_crtc) 1073 { 1074 if (radeon_crtc->crtc_id == 1) 1075 radeon_crtc->crtc_offset = RADEON_CRTC2_H_TOTAL_DISP - RADEON_CRTC_H_TOTAL_DISP; 1076 drm_crtc_helper_add(&radeon_crtc->base, &legacy_helper_funcs); 1077 } 1078