drivers/gpu/drm/radeon/radeon_display.c

   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 "drmP.h"
  27 #include "radeon_drm.h"
  28 #include "radeon.h"
  29
  30 #include "atom.h"
  31 #include <asm/div64.h>
  32
  33 #include "drm_crtc_helper.h"
  34 #include "drm_edid.h"
  35
  36 static int radeon_ddc_dump(struct drm_connector *connector);
  37
  38 static void avivo_crtc_load_lut(struct drm_crtc *crtc)
  39 {
  40         struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
  41         struct drm_device *dev = crtc->dev;
  42         struct radeon_device *rdev = dev->dev_private;
  43         int i;
  44
  45         DRM_DEBUG("%d\n", radeon_crtc->crtc_id);
  46         WREG32(AVIVO_DC_LUTA_CONTROL + radeon_crtc->crtc_offset, 0);
  47
  48         WREG32(AVIVO_DC_LUTA_BLACK_OFFSET_BLUE + radeon_crtc->crtc_offset, 0);
  49         WREG32(AVIVO_DC_LUTA_BLACK_OFFSET_GREEN + radeon_crtc->crtc_offset, 0);
  50         WREG32(AVIVO_DC_LUTA_BLACK_OFFSET_RED + radeon_crtc->crtc_offset, 0);
  51
  52         WREG32(AVIVO_DC_LUTA_WHITE_OFFSET_BLUE + radeon_crtc->crtc_offset, 0xffff);
  53         WREG32(AVIVO_DC_LUTA_WHITE_OFFSET_GREEN + radeon_crtc->crtc_offset, 0xffff);
  54         WREG32(AVIVO_DC_LUTA_WHITE_OFFSET_RED + radeon_crtc->crtc_offset, 0xffff);
  55
  56         WREG32(AVIVO_DC_LUT_RW_SELECT, radeon_crtc->crtc_id);
  57         WREG32(AVIVO_DC_LUT_RW_MODE, 0);
  58         WREG32(AVIVO_DC_LUT_WRITE_EN_MASK, 0x0000003f);
  59
  60         WREG8(AVIVO_DC_LUT_RW_INDEX, 0);
  61         for (i = 0; i < 256; i++) {
  62                 WREG32(AVIVO_DC_LUT_30_COLOR,
  63                              (radeon_crtc->lut_r[i] << 20) |
  64                              (radeon_crtc->lut_g[i] << 10) |
  65                              (radeon_crtc->lut_b[i] << 0));
  66         }
  67
  68         WREG32(AVIVO_D1GRPH_LUT_SEL + radeon_crtc->crtc_offset, radeon_crtc->crtc_id);
  69 }
  70
  71 static void legacy_crtc_load_lut(struct drm_crtc *crtc)
  72 {
  73         struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
  74         struct drm_device *dev = crtc->dev;
  75         struct radeon_device *rdev = dev->dev_private;
  76         int i;
  77         uint32_t dac2_cntl;
  78
  79         dac2_cntl = RREG32(RADEON_DAC_CNTL2);
  80         if (radeon_crtc->crtc_id == 0)
  81                 dac2_cntl &= (uint32_t)~RADEON_DAC2_PALETTE_ACC_CTL;
  82         else
  83                 dac2_cntl |= RADEON_DAC2_PALETTE_ACC_CTL;
  84         WREG32(RADEON_DAC_CNTL2, dac2_cntl);
  85
  86         WREG8(RADEON_PALETTE_INDEX, 0);
  87         for (i = 0; i < 256; i++) {
  88                 WREG32(RADEON_PALETTE_30_DATA,
  89                              (radeon_crtc->lut_r[i] << 20) |
  90                              (radeon_crtc->lut_g[i] << 10) |
  91                              (radeon_crtc->lut_b[i] << 0));
  92         }
  93 }
  94
  95 void radeon_crtc_load_lut(struct drm_crtc *crtc)
  96 {
  97         struct drm_device *dev = crtc->dev;
  98         struct radeon_device *rdev = dev->dev_private;
  99
 100         if (!crtc->enabled)
 101                 return;
 102
 103         if (ASIC_IS_AVIVO(rdev))
 104                 avivo_crtc_load_lut(crtc);
 105         else
 106                 legacy_crtc_load_lut(crtc);
 107 }
 108
 109 /** Sets the color ramps on behalf of RandR */
 110 void radeon_crtc_fb_gamma_set(struct drm_crtc *crtc, u16 red, u16 green,
 111                               u16 blue, int regno)
 112 {
 113         struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
 114
 115         if (regno == 0)
 116                 DRM_DEBUG("gamma set %d\n", radeon_crtc->crtc_id);
 117         radeon_crtc->lut_r[regno] = red >> 6;
 118         radeon_crtc->lut_g[regno] = green >> 6;
 119         radeon_crtc->lut_b[regno] = blue >> 6;
 120 }
 121
 122 static void radeon_crtc_gamma_set(struct drm_crtc *crtc, u16 *red, u16 *green,
 123                                   u16 *blue, uint32_t size)
 124 {
 125         struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
 126         int i, j;
 127
 128         if (size != 256) {
 129                 return;
 130         }
 131         if (crtc->fb == NULL) {
 132                 return;
 133         }
 134
 135         if (crtc->fb->depth == 16) {
 136                 for (i = 0; i < 64; i++) {
 137                         if (i <= 31) {
 138                                 for (j = 0; j < 8; j++) {
 139                                         radeon_crtc->lut_r[i * 8 + j] = red[i] >> 6;
 140                                         radeon_crtc->lut_b[i * 8 + j] = blue[i] >> 6;
 141                                 }
 142                         }
 143                         for (j = 0; j < 4; j++)
 144                                 radeon_crtc->lut_g[i * 4 + j] = green[i] >> 6;
 145                 }
 146         } else {
 147                 for (i = 0; i < 256; i++) {
 148                         radeon_crtc->lut_r[i] = red[i] >> 6;
 149                         radeon_crtc->lut_g[i] = green[i] >> 6;
 150                         radeon_crtc->lut_b[i] = blue[i] >> 6;
 151                 }
 152         }
 153
 154         radeon_crtc_load_lut(crtc);
 155 }
 156
 157 static void radeon_crtc_destroy(struct drm_crtc *crtc)
 158 {
 159         struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
 160
 161         if (radeon_crtc->mode_set.mode) {
 162                 drm_mode_destroy(crtc->dev, radeon_crtc->mode_set.mode);
 163         }
 164         drm_crtc_cleanup(crtc);
 165         kfree(radeon_crtc);
 166 }
 167
 168 static const struct drm_crtc_funcs radeon_crtc_funcs = {
 169         .cursor_set = radeon_crtc_cursor_set,
 170         .cursor_move = radeon_crtc_cursor_move,
 171         .gamma_set = radeon_crtc_gamma_set,
 172         .set_config = drm_crtc_helper_set_config,
 173         .destroy = radeon_crtc_destroy,
 174 };
 175
 176 static void radeon_crtc_init(struct drm_device *dev, int index)
 177 {
 178         struct radeon_device *rdev = dev->dev_private;
 179         struct radeon_crtc *radeon_crtc;
 180         int i;
 181
 182         radeon_crtc = kzalloc(sizeof(struct radeon_crtc) + (RADEONFB_CONN_LIMIT * sizeof(struct drm_connector *)), GFP_KERNEL);
 183         if (radeon_crtc == NULL)
 184                 return;
 185
 186         drm_crtc_init(dev, &radeon_crtc->base, &radeon_crtc_funcs);
 187
 188         drm_mode_crtc_set_gamma_size(&radeon_crtc->base, 256);
 189         radeon_crtc->crtc_id = index;
 190         rdev->mode_info.crtcs[index] = radeon_crtc;
 191
 192         radeon_crtc->mode_set.crtc = &radeon_crtc->base;
 193         radeon_crtc->mode_set.connectors = (struct drm_connector **)(radeon_crtc + 1);
 194         radeon_crtc->mode_set.num_connectors = 0;
 195
 196         for (i = 0; i < 256; i++) {
 197                 radeon_crtc->lut_r[i] = i << 2;
 198                 radeon_crtc->lut_g[i] = i << 2;
 199                 radeon_crtc->lut_b[i] = i << 2;
 200         }
 201
 202         if (rdev->is_atom_bios && (ASIC_IS_AVIVO(rdev) || radeon_r4xx_atom))
 203                 radeon_atombios_init_crtc(dev, radeon_crtc);
 204         else
 205                 radeon_legacy_init_crtc(dev, radeon_crtc);
 206 }
 207
 208 static const char *encoder_names[34] = {
 209         "NONE",
 210         "INTERNAL_LVDS",
 211         "INTERNAL_TMDS1",
 212         "INTERNAL_TMDS2",
 213         "INTERNAL_DAC1",
 214         "INTERNAL_DAC2",
 215         "INTERNAL_SDVOA",
 216         "INTERNAL_SDVOB",
 217         "SI170B",
 218         "CH7303",
 219         "CH7301",
 220         "INTERNAL_DVO1",
 221         "EXTERNAL_SDVOA",
 222         "EXTERNAL_SDVOB",
 223         "TITFP513",
 224         "INTERNAL_LVTM1",
 225         "VT1623",
 226         "HDMI_SI1930",
 227         "HDMI_INTERNAL",
 228         "INTERNAL_KLDSCP_TMDS1",
 229         "INTERNAL_KLDSCP_DVO1",
 230         "INTERNAL_KLDSCP_DAC1",
 231         "INTERNAL_KLDSCP_DAC2",
 232         "SI178",
 233         "MVPU_FPGA",
 234         "INTERNAL_DDI",
 235         "VT1625",
 236         "HDMI_SI1932",
 237         "DP_AN9801",
 238         "DP_DP501",
 239         "INTERNAL_UNIPHY",
 240         "INTERNAL_KLDSCP_LVTMA",
 241         "INTERNAL_UNIPHY1",
 242         "INTERNAL_UNIPHY2",
 243 };
 244
 245 static const char *connector_names[13] = {
 246         "Unknown",
 247         "VGA",
 248         "DVI-I",
 249         "DVI-D",
 250         "DVI-A",
 251         "Composite",
 252         "S-video",
 253         "LVDS",
 254         "Component",
 255         "DIN",
 256         "DisplayPort",
 257         "HDMI-A",
 258         "HDMI-B",
 259 };
 260
 261 static void radeon_print_display_setup(struct drm_device *dev)
 262 {
 263         struct drm_connector *connector;
 264         struct radeon_connector *radeon_connector;
 265         struct drm_encoder *encoder;
 266         struct radeon_encoder *radeon_encoder;
 267         uint32_t devices;
 268         int i = 0;
 269
 270         DRM_INFO("Radeon Display Connectors\n");
 271         list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
 272                 radeon_connector = to_radeon_connector(connector);
 273                 DRM_INFO("Connector %d:\n", i);
 274                 DRM_INFO("  %s\n", connector_names[connector->connector_type]);
 275                 if (radeon_connector->ddc_bus)
 276                         DRM_INFO("  DDC: 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x\n",
 277                                  radeon_connector->ddc_bus->rec.mask_clk_reg,
 278                                  radeon_connector->ddc_bus->rec.mask_data_reg,
 279                                  radeon_connector->ddc_bus->rec.a_clk_reg,
 280                                  radeon_connector->ddc_bus->rec.a_data_reg,
 281                                  radeon_connector->ddc_bus->rec.put_clk_reg,
 282                                  radeon_connector->ddc_bus->rec.put_data_reg,
 283                                  radeon_connector->ddc_bus->rec.get_clk_reg,
 284                                  radeon_connector->ddc_bus->rec.get_data_reg);
 285                 DRM_INFO("  Encoders:\n");
 286                 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
 287                         radeon_encoder = to_radeon_encoder(encoder);
 288                         devices = radeon_encoder->devices & radeon_connector->devices;
 289                         if (devices) {
 290                                 if (devices & ATOM_DEVICE_CRT1_SUPPORT)
 291                                         DRM_INFO("    CRT1: %s\n", encoder_names[radeon_encoder->encoder_id]);
 292                                 if (devices & ATOM_DEVICE_CRT2_SUPPORT)
 293                                         DRM_INFO("    CRT2: %s\n", encoder_names[radeon_encoder->encoder_id]);
 294                                 if (devices & ATOM_DEVICE_LCD1_SUPPORT)
 295                                         DRM_INFO("    LCD1: %s\n", encoder_names[radeon_encoder->encoder_id]);
 296                                 if (devices & ATOM_DEVICE_DFP1_SUPPORT)
 297                                         DRM_INFO("    DFP1: %s\n", encoder_names[radeon_encoder->encoder_id]);
 298                                 if (devices & ATOM_DEVICE_DFP2_SUPPORT)
 299                                         DRM_INFO("    DFP2: %s\n", encoder_names[radeon_encoder->encoder_id]);
 300                                 if (devices & ATOM_DEVICE_DFP3_SUPPORT)
 301                                         DRM_INFO("    DFP3: %s\n", encoder_names[radeon_encoder->encoder_id]);
 302                                 if (devices & ATOM_DEVICE_DFP4_SUPPORT)
 303                                         DRM_INFO("    DFP4: %s\n", encoder_names[radeon_encoder->encoder_id]);
 304                                 if (devices & ATOM_DEVICE_DFP5_SUPPORT)
 305                                         DRM_INFO("    DFP5: %s\n", encoder_names[radeon_encoder->encoder_id]);
 306                                 if (devices & ATOM_DEVICE_TV1_SUPPORT)
 307                                         DRM_INFO("    TV1: %s\n", encoder_names[radeon_encoder->encoder_id]);
 308                                 if (devices & ATOM_DEVICE_CV_SUPPORT)
 309                                         DRM_INFO("    CV: %s\n", encoder_names[radeon_encoder->encoder_id]);
 310                         }
 311                 }
 312                 i++;
 313         }
 314 }
 315
 316 bool radeon_setup_enc_conn(struct drm_device *dev)
 317 {
 318         struct radeon_device *rdev = dev->dev_private;
 319         struct drm_connector *drm_connector;
 320         bool ret = false;
 321
 322         if (rdev->bios) {
 323                 if (rdev->is_atom_bios) {
 324                         if (rdev->family >= CHIP_R600)
 325                                 ret = radeon_get_atom_connector_info_from_object_table(dev);
 326                         else
 327                                 ret = radeon_get_atom_connector_info_from_supported_devices_table(dev);
 328                 } else
 329                         ret = radeon_get_legacy_connector_info_from_bios(dev);
 330         } else {
 331                 if (!ASIC_IS_AVIVO(rdev))
 332                         ret = radeon_get_legacy_connector_info_from_table(dev);
 333         }
 334         if (ret) {
 335                 radeon_print_display_setup(dev);
 336                 list_for_each_entry(drm_connector, &dev->mode_config.connector_list, head)
 337                         radeon_ddc_dump(drm_connector);
 338         }
 339
 340         return ret;
 341 }
 342
 343 int radeon_ddc_get_modes(struct radeon_connector *radeon_connector)
 344 {
 345         struct edid *edid;
 346         int ret = 0;
 347
 348         if (!radeon_connector->ddc_bus)
 349                 return -1;
 350         radeon_i2c_do_lock(radeon_connector, 1);
 351         edid = drm_get_edid(&radeon_connector->base, &radeon_connector->ddc_bus->adapter);
 352         radeon_i2c_do_lock(radeon_connector, 0);
 353         if (edid) {
 354                 /* update digital bits here */
 355                 if (edid->input & DRM_EDID_INPUT_DIGITAL)
 356                         radeon_connector->use_digital = 1;
 357                 else
 358                         radeon_connector->use_digital = 0;
 359                 drm_mode_connector_update_edid_property(&radeon_connector->base, edid);
 360                 ret = drm_add_edid_modes(&radeon_connector->base, edid);
 361                 kfree(edid);
 362                 return ret;
 363         }
 364         drm_mode_connector_update_edid_property(&radeon_connector->base, NULL);
 365         return -1;
 366 }
 367
 368 static int radeon_ddc_dump(struct drm_connector *connector)
 369 {
 370         struct edid *edid;
 371         struct radeon_connector *radeon_connector = to_radeon_connector(connector);
 372         int ret = 0;
 373
 374         if (!radeon_connector->ddc_bus)
 375                 return -1;
 376         radeon_i2c_do_lock(radeon_connector, 1);
 377         edid = drm_get_edid(connector, &radeon_connector->ddc_bus->adapter);
 378         radeon_i2c_do_lock(radeon_connector, 0);
 379         if (edid) {
 380                 kfree(edid);
 381         }
 382         return ret;
 383 }
 384
 385 static inline uint32_t radeon_div(uint64_t n, uint32_t d)
 386 {
 387         uint64_t mod;
 388
 389         n += d / 2;
 390
 391         mod = do_div(n, d);
 392         return n;
 393 }
 394
 395 void radeon_compute_pll(struct radeon_pll *pll,
 396                         uint64_t freq,
 397                         uint32_t *dot_clock_p,
 398                         uint32_t *fb_div_p,
 399                         uint32_t *frac_fb_div_p,
 400                         uint32_t *ref_div_p,
 401                         uint32_t *post_div_p,
 402                         int flags)
 403 {
 404         uint32_t min_ref_div = pll->min_ref_div;
 405         uint32_t max_ref_div = pll->max_ref_div;
 406         uint32_t min_fractional_feed_div = 0;
 407         uint32_t max_fractional_feed_div = 0;
 408         uint32_t best_vco = pll->best_vco;
 409         uint32_t best_post_div = 1;
 410         uint32_t best_ref_div = 1;
 411         uint32_t best_feedback_div = 1;
 412         uint32_t best_frac_feedback_div = 0;
 413         uint32_t best_freq = -1;
 414         uint32_t best_error = 0xffffffff;
 415         uint32_t best_vco_diff = 1;
 416         uint32_t post_div;
 417
 418         DRM_DEBUG("PLL freq %llu %u %u\n", freq, pll->min_ref_div, pll->max_ref_div);
 419         freq = freq * 1000;
 420
 421         if (flags & RADEON_PLL_USE_REF_DIV)
 422                 min_ref_div = max_ref_div = pll->reference_div;
 423         else {
 424                 while (min_ref_div < max_ref_div-1) {
 425                         uint32_t mid = (min_ref_div + max_ref_div) / 2;
 426                         uint32_t pll_in = pll->reference_freq / mid;
 427                         if (pll_in < pll->pll_in_min)
 428                                 max_ref_div = mid;
 429                         else if (pll_in > pll->pll_in_max)
 430                                 min_ref_div = mid;
 431                         else
 432                                 break;
 433                 }
 434         }
 435
 436         if (flags & RADEON_PLL_USE_FRAC_FB_DIV) {
 437                 min_fractional_feed_div = pll->min_frac_feedback_div;
 438                 max_fractional_feed_div = pll->max_frac_feedback_div;
 439         }
 440
 441         for (post_div = pll->min_post_div; post_div <= pll->max_post_div; ++post_div) {
 442                 uint32_t ref_div;
 443
 444                 if ((flags & RADEON_PLL_NO_ODD_POST_DIV) && (post_div & 1))
 445                         continue;
 446
 447                 /* legacy radeons only have a few post_divs */
 448                 if (flags & RADEON_PLL_LEGACY) {
 449                         if ((post_div == 5) ||
 450                             (post_div == 7) ||
 451                             (post_div == 9) ||
 452                             (post_div == 10) ||
 453                             (post_div == 11) ||
 454                             (post_div == 13) ||
 455                             (post_div == 14) ||
 456                             (post_div == 15))
 457                                 continue;
 458                 }
 459
 460                 for (ref_div = min_ref_div; ref_div <= max_ref_div; ++ref_div) {
 461                         uint32_t feedback_div, current_freq = 0, error, vco_diff;
 462                         uint32_t pll_in = pll->reference_freq / ref_div;
 463                         uint32_t min_feed_div = pll->min_feedback_div;
 464                         uint32_t max_feed_div = pll->max_feedback_div + 1;
 465
 466                         if (pll_in < pll->pll_in_min || pll_in > pll->pll_in_max)
 467                                 continue;
 468
 469                         while (min_feed_div < max_feed_div) {
 470                                 uint32_t vco;
 471                                 uint32_t min_frac_feed_div = min_fractional_feed_div;
 472                                 uint32_t max_frac_feed_div = max_fractional_feed_div + 1;
 473                                 uint32_t frac_feedback_div;
 474                                 uint64_t tmp;
 475
 476                                 feedback_div = (min_feed_div + max_feed_div) / 2;
 477
 478                                 tmp = (uint64_t)pll->reference_freq * feedback_div;
 479                                 vco = radeon_div(tmp, ref_div);
 480
 481                                 if (vco < pll->pll_out_min) {
 482                                         min_feed_div = feedback_div + 1;
 483                                         continue;
 484                                 } else if (vco > pll->pll_out_max) {
 485                                         max_feed_div = feedback_div;
 486                                         continue;
 487                                 }
 488
 489                                 while (min_frac_feed_div < max_frac_feed_div) {
 490                                         frac_feedback_div = (min_frac_feed_div + max_frac_feed_div) / 2;
 491                                         tmp = (uint64_t)pll->reference_freq * 10000 * feedback_div;
 492                                         tmp += (uint64_t)pll->reference_freq * 1000 * frac_feedback_div;
 493                                         current_freq = radeon_div(tmp, ref_div * post_div);
 494
 495                                         if (flags & RADEON_PLL_PREFER_CLOSEST_LOWER) {
 496                                                 error = freq - current_freq;
 497                                                 error = error < 0 ? 0xffffffff : error;
 498                                         } else
 499                                                 error = abs(current_freq - freq);
 500                                         vco_diff = abs(vco - best_vco);
 501
 502                                         if ((best_vco == 0 && error < best_error) ||
 503                                             (best_vco != 0 &&
 504                                              (error < best_error - 100 ||
 505                                               (abs(error - best_error) < 100 && vco_diff < best_vco_diff)))) {
 506                                                 best_post_div = post_div;
 507                                                 best_ref_div = ref_div;
 508                                                 best_feedback_div = feedback_div;
 509                                                 best_frac_feedback_div = frac_feedback_div;
 510                                                 best_freq = current_freq;
 511                                                 best_error = error;
 512                                                 best_vco_diff = vco_diff;
 513                                         } else if (current_freq == freq) {
 514                                                 if (best_freq == -1) {
 515                                                         best_post_div = post_div;
 516                                                         best_ref_div = ref_div;
 517                                                         best_feedback_div = feedback_div;
 518                                                         best_frac_feedback_div = frac_feedback_div;
 519                                                         best_freq = current_freq;
 520                                                         best_error = error;
 521                                                         best_vco_diff = vco_diff;
 522                                                 } else if (((flags & RADEON_PLL_PREFER_LOW_REF_DIV) && (ref_div < best_ref_div)) ||
 523                                                            ((flags & RADEON_PLL_PREFER_HIGH_REF_DIV) && (ref_div > best_ref_div)) ||
 524                                                            ((flags & RADEON_PLL_PREFER_LOW_FB_DIV) && (feedback_div < best_feedback_div)) ||
 525                                                            ((flags & RADEON_PLL_PREFER_HIGH_FB_DIV) && (feedback_div > best_feedback_div)) ||
 526                                                            ((flags & RADEON_PLL_PREFER_LOW_POST_DIV) && (post_div < best_post_div)) ||
 527                                                            ((flags & RADEON_PLL_PREFER_HIGH_POST_DIV) && (post_div > best_post_div))) {
 528                                                         best_post_div = post_div;
 529                                                         best_ref_div = ref_div;
 530                                                         best_feedback_div = feedback_div;
 531                                                         best_frac_feedback_div = frac_feedback_div;
 532                                                         best_freq = current_freq;
 533                                                         best_error = error;
 534                                                         best_vco_diff = vco_diff;
 535                                                 }
 536                                         }
 537                                         if (current_freq < freq)
 538                                                 min_frac_feed_div = frac_feedback_div + 1;
 539                                         else
 540                                                 max_frac_feed_div = frac_feedback_div;
 541                                 }
 542                                 if (current_freq < freq)
 543                                         min_feed_div = feedback_div + 1;
 544                                 else
 545                                         max_feed_div = feedback_div;
 546                         }
 547                 }
 548         }
 549
 550         *dot_clock_p = best_freq / 10000;
 551         *fb_div_p = best_feedback_div;
 552         *frac_fb_div_p = best_frac_feedback_div;
 553         *ref_div_p = best_ref_div;
 554         *post_div_p = best_post_div;
 555 }
 556
 557 static void radeon_user_framebuffer_destroy(struct drm_framebuffer *fb)
 558 {
 559         struct radeon_framebuffer *radeon_fb = to_radeon_framebuffer(fb);
 560         struct drm_device *dev = fb->dev;
 561
 562         if (fb->fbdev)
 563                 radeonfb_remove(dev, fb);
 564
 565         if (radeon_fb->obj) {
 566                 radeon_gem_object_unpin(radeon_fb->obj);
 567                 mutex_lock(&dev->struct_mutex);
 568                 drm_gem_object_unreference(radeon_fb->obj);
 569                 mutex_unlock(&dev->struct_mutex);
 570         }
 571         drm_framebuffer_cleanup(fb);
 572         kfree(radeon_fb);
 573 }
 574
 575 static int radeon_user_framebuffer_create_handle(struct drm_framebuffer *fb,
 576                                                   struct drm_file *file_priv,
 577                                                   unsigned int *handle)
 578 {
 579         struct radeon_framebuffer *radeon_fb = to_radeon_framebuffer(fb);
 580
 581         return drm_gem_handle_create(file_priv, radeon_fb->obj, handle);
 582 }
 583
 584 static const struct drm_framebuffer_funcs radeon_fb_funcs = {
 585         .destroy = radeon_user_framebuffer_destroy,
 586         .create_handle = radeon_user_framebuffer_create_handle,
 587 };
 588
 589 struct drm_framebuffer *
 590 radeon_framebuffer_create(struct drm_device *dev,
 591                           struct drm_mode_fb_cmd *mode_cmd,
 592                           struct drm_gem_object *obj)
 593 {
 594         struct radeon_framebuffer *radeon_fb;
 595
 596         radeon_fb = kzalloc(sizeof(*radeon_fb), GFP_KERNEL);
 597         if (radeon_fb == NULL) {
 598                 return NULL;
 599         }
 600         drm_framebuffer_init(dev, &radeon_fb->base, &radeon_fb_funcs);
 601         drm_helper_mode_fill_fb_struct(&radeon_fb->base, mode_cmd);
 602         radeon_fb->obj = obj;
 603         return &radeon_fb->base;
 604 }
 605
 606 static struct drm_framebuffer *
 607 radeon_user_framebuffer_create(struct drm_device *dev,
 608                                struct drm_file *file_priv,
 609                                struct drm_mode_fb_cmd *mode_cmd)
 610 {
 611         struct drm_gem_object *obj;
 612
 613         obj = drm_gem_object_lookup(dev, file_priv, mode_cmd->handle);
 614
 615         return radeon_framebuffer_create(dev, mode_cmd, obj);
 616 }
 617
 618 static const struct drm_mode_config_funcs radeon_mode_funcs = {
 619         .fb_create = radeon_user_framebuffer_create,
 620         .fb_changed = radeonfb_probe,
 621 };
 622
 623 int radeon_modeset_init(struct radeon_device *rdev)
 624 {
 625         int num_crtc = 2, i;
 626         int ret;
 627
 628         drm_mode_config_init(rdev->ddev);
 629         rdev->mode_info.mode_config_initialized = true;
 630
 631         rdev->ddev->mode_config.funcs = (void *)&radeon_mode_funcs;
 632
 633         if (ASIC_IS_AVIVO(rdev)) {
 634                 rdev->ddev->mode_config.max_width = 8192;
 635                 rdev->ddev->mode_config.max_height = 8192;
 636         } else {
 637                 rdev->ddev->mode_config.max_width = 4096;
 638                 rdev->ddev->mode_config.max_height = 4096;
 639         }
 640
 641         rdev->ddev->mode_config.fb_base = rdev->mc.aper_base;
 642
 643         /* allocate crtcs - TODO single crtc */
 644         for (i = 0; i < num_crtc; i++) {
 645                 radeon_crtc_init(rdev->ddev, i);
 646         }
 647
 648         /* okay we should have all the bios connectors */
 649         ret = radeon_setup_enc_conn(rdev->ddev);
 650         if (!ret) {
 651                 return ret;
 652         }
 653         drm_helper_initial_config(rdev->ddev);
 654         return 0;
 655 }
 656
 657 void radeon_modeset_fini(struct radeon_device *rdev)
 658 {
 659         if (rdev->mode_info.mode_config_initialized) {
 660                 drm_mode_config_cleanup(rdev->ddev);
 661                 rdev->mode_info.mode_config_initialized = false;
 662         }
 663 }
 664
 665 bool radeon_crtc_scaling_mode_fixup(struct drm_crtc *crtc,
 666                                 struct drm_display_mode *mode,
 667                                 struct drm_display_mode *adjusted_mode)
 668 {
 669         struct drm_device *dev = crtc->dev;
 670         struct drm_encoder *encoder;
 671         struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
 672         struct radeon_encoder *radeon_encoder;
 673         bool first = true;
 674
 675         list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
 676                 radeon_encoder = to_radeon_encoder(encoder);
 677                 if (encoder->crtc != crtc)
 678                         continue;
 679                 if (first) {
 680                         radeon_crtc->rmx_type = radeon_encoder->rmx_type;
 681                         radeon_crtc->devices = radeon_encoder->devices;
 682                         memcpy(&radeon_crtc->native_mode,
 683                                 &radeon_encoder->native_mode,
 684                                 sizeof(struct radeon_native_mode));
 685                         first = false;
 686                 } else {
 687                         if (radeon_crtc->rmx_type != radeon_encoder->rmx_type) {
 688                                 /* WARNING: Right now this can't happen but
 689                                  * in the future we need to check that scaling
 690                                  * are consistent accross different encoder
 691                                  * (ie all encoder can work with the same
 692                                  *  scaling).
 693                                  */
 694                                 DRM_ERROR("Scaling not consistent accross encoder.\n");
 695                                 return false;
 696                         }
 697                 }
 698         }
 699         if (radeon_crtc->rmx_type != RMX_OFF) {
 700                 fixed20_12 a, b;
 701                 a.full = rfixed_const(crtc->mode.vdisplay);
 702                 b.full = rfixed_const(radeon_crtc->native_mode.panel_xres);
 703                 radeon_crtc->vsc.full = rfixed_div(a, b);
 704                 a.full = rfixed_const(crtc->mode.hdisplay);
 705                 b.full = rfixed_const(radeon_crtc->native_mode.panel_yres);
 706                 radeon_crtc->hsc.full = rfixed_div(a, b);
 707         } else {
 708                 radeon_crtc->vsc.full = rfixed_const(1);
 709                 radeon_crtc->hsc.full = rfixed_const(1);
 710         }
 711         return true;
 712 }