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
 191         radeon_crtc->mode_set.crtc = &radeon_crtc->base;
 192         radeon_crtc->mode_set.connectors = (struct drm_connector **)(radeon_crtc + 1);
 193         radeon_crtc->mode_set.num_connectors = 0;
 194
 195         for (i = 0; i < 256; i++) {
 196                 radeon_crtc->lut_r[i] = i << 2;
 197                 radeon_crtc->lut_g[i] = i << 2;
 198                 radeon_crtc->lut_b[i] = i << 2;
 199         }
 200
 201         if (rdev->is_atom_bios && (ASIC_IS_AVIVO(rdev) || radeon_r4xx_atom))
 202                 radeon_atombios_init_crtc(dev, radeon_crtc);
 203         else
 204                 radeon_legacy_init_crtc(dev, radeon_crtc);
 205 }
 206
 207 static const char *encoder_names[34] = {
 208         "NONE",
 209         "INTERNAL_LVDS",
 210         "INTERNAL_TMDS1",
 211         "INTERNAL_TMDS2",
 212         "INTERNAL_DAC1",
 213         "INTERNAL_DAC2",
 214         "INTERNAL_SDVOA",
 215         "INTERNAL_SDVOB",
 216         "SI170B",
 217         "CH7303",
 218         "CH7301",
 219         "INTERNAL_DVO1",
 220         "EXTERNAL_SDVOA",
 221         "EXTERNAL_SDVOB",
 222         "TITFP513",
 223         "INTERNAL_LVTM1",
 224         "VT1623",
 225         "HDMI_SI1930",
 226         "HDMI_INTERNAL",
 227         "INTERNAL_KLDSCP_TMDS1",
 228         "INTERNAL_KLDSCP_DVO1",
 229         "INTERNAL_KLDSCP_DAC1",
 230         "INTERNAL_KLDSCP_DAC2",
 231         "SI178",
 232         "MVPU_FPGA",
 233         "INTERNAL_DDI",
 234         "VT1625",
 235         "HDMI_SI1932",
 236         "DP_AN9801",
 237         "DP_DP501",
 238         "INTERNAL_UNIPHY",
 239         "INTERNAL_KLDSCP_LVTMA",
 240         "INTERNAL_UNIPHY1",
 241         "INTERNAL_UNIPHY2",
 242 };
 243
 244 static const char *connector_names[13] = {
 245         "Unknown",
 246         "VGA",
 247         "DVI-I",
 248         "DVI-D",
 249         "DVI-A",
 250         "Composite",
 251         "S-video",
 252         "LVDS",
 253         "Component",
 254         "DIN",
 255         "DisplayPort",
 256         "HDMI-A",
 257         "HDMI-B",
 258 };
 259
 260 static void radeon_print_display_setup(struct drm_device *dev)
 261 {
 262         struct drm_connector *connector;
 263         struct radeon_connector *radeon_connector;
 264         struct drm_encoder *encoder;
 265         struct radeon_encoder *radeon_encoder;
 266         uint32_t devices;
 267         int i = 0;
 268
 269         DRM_INFO("Radeon Display Connectors\n");
 270         list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
 271                 radeon_connector = to_radeon_connector(connector);
 272                 DRM_INFO("Connector %d:\n", i);
 273                 DRM_INFO("  %s\n", connector_names[connector->connector_type]);
 274                 if (radeon_connector->ddc_bus)
 275                         DRM_INFO("  DDC: 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x\n",
 276                                  radeon_connector->ddc_bus->rec.mask_clk_reg,
 277                                  radeon_connector->ddc_bus->rec.mask_data_reg,
 278                                  radeon_connector->ddc_bus->rec.a_clk_reg,
 279                                  radeon_connector->ddc_bus->rec.a_data_reg,
 280                                  radeon_connector->ddc_bus->rec.put_clk_reg,
 281                                  radeon_connector->ddc_bus->rec.put_data_reg,
 282                                  radeon_connector->ddc_bus->rec.get_clk_reg,
 283                                  radeon_connector->ddc_bus->rec.get_data_reg);
 284                 DRM_INFO("  Encoders:\n");
 285                 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
 286                         radeon_encoder = to_radeon_encoder(encoder);
 287                         devices = radeon_encoder->devices & radeon_connector->devices;
 288                         if (devices) {
 289                                 if (devices & ATOM_DEVICE_CRT1_SUPPORT)
 290                                         DRM_INFO("    CRT1: %s\n", encoder_names[radeon_encoder->encoder_id]);
 291                                 if (devices & ATOM_DEVICE_CRT2_SUPPORT)
 292                                         DRM_INFO("    CRT2: %s\n", encoder_names[radeon_encoder->encoder_id]);
 293                                 if (devices & ATOM_DEVICE_LCD1_SUPPORT)
 294                                         DRM_INFO("    LCD1: %s\n", encoder_names[radeon_encoder->encoder_id]);
 295                                 if (devices & ATOM_DEVICE_DFP1_SUPPORT)
 296                                         DRM_INFO("    DFP1: %s\n", encoder_names[radeon_encoder->encoder_id]);
 297                                 if (devices & ATOM_DEVICE_DFP2_SUPPORT)
 298                                         DRM_INFO("    DFP2: %s\n", encoder_names[radeon_encoder->encoder_id]);
 299                                 if (devices & ATOM_DEVICE_DFP3_SUPPORT)
 300                                         DRM_INFO("    DFP3: %s\n", encoder_names[radeon_encoder->encoder_id]);
 301                                 if (devices & ATOM_DEVICE_DFP4_SUPPORT)
 302                                         DRM_INFO("    DFP4: %s\n", encoder_names[radeon_encoder->encoder_id]);
 303                                 if (devices & ATOM_DEVICE_DFP5_SUPPORT)
 304                                         DRM_INFO("    DFP5: %s\n", encoder_names[radeon_encoder->encoder_id]);
 305                                 if (devices & ATOM_DEVICE_TV1_SUPPORT)
 306                                         DRM_INFO("    TV1: %s\n", encoder_names[radeon_encoder->encoder_id]);
 307                                 if (devices & ATOM_DEVICE_CV_SUPPORT)
 308                                         DRM_INFO("    CV: %s\n", encoder_names[radeon_encoder->encoder_id]);
 309                         }
 310                 }
 311                 i++;
 312         }
 313 }
 314
 315 bool radeon_setup_enc_conn(struct drm_device *dev)
 316 {
 317         struct radeon_device *rdev = dev->dev_private;
 318         struct drm_connector *drm_connector;
 319         bool ret = false;
 320
 321         if (rdev->bios) {
 322                 if (rdev->is_atom_bios) {
 323                         if (rdev->family >= CHIP_R600)
 324                                 ret = radeon_get_atom_connector_info_from_object_table(dev);
 325                         else
 326                                 ret = radeon_get_atom_connector_info_from_supported_devices_table(dev);
 327                 } else
 328                         ret = radeon_get_legacy_connector_info_from_bios(dev);
 329         } else {
 330                 if (!ASIC_IS_AVIVO(rdev))
 331                         ret = radeon_get_legacy_connector_info_from_table(dev);
 332         }
 333         if (ret) {
 334                 radeon_print_display_setup(dev);
 335                 list_for_each_entry(drm_connector, &dev->mode_config.connector_list, head)
 336                         radeon_ddc_dump(drm_connector);
 337         }
 338
 339         return ret;
 340 }
 341
 342 int radeon_ddc_get_modes(struct radeon_connector *radeon_connector)
 343 {
 344         struct edid *edid;
 345         int ret = 0;
 346
 347         if (!radeon_connector->ddc_bus)
 348                 return -1;
 349         radeon_i2c_do_lock(radeon_connector, 1);
 350         edid = drm_get_edid(&radeon_connector->base, &radeon_connector->ddc_bus->adapter);
 351         radeon_i2c_do_lock(radeon_connector, 0);
 352         if (edid) {
 353                 /* update digital bits here */
 354                 if (edid->input & DRM_EDID_INPUT_DIGITAL)
 355                         radeon_connector->use_digital = 1;
 356                 else
 357                         radeon_connector->use_digital = 0;
 358                 drm_mode_connector_update_edid_property(&radeon_connector->base, edid);
 359                 ret = drm_add_edid_modes(&radeon_connector->base, edid);
 360                 kfree(edid);
 361                 return ret;
 362         }
 363         drm_mode_connector_update_edid_property(&radeon_connector->base, NULL);
 364         return -1;
 365 }
 366
 367 static int radeon_ddc_dump(struct drm_connector *connector)
 368 {
 369         struct edid *edid;
 370         struct radeon_connector *radeon_connector = to_radeon_connector(connector);
 371         int ret = 0;
 372
 373         if (!radeon_connector->ddc_bus)
 374                 return -1;
 375         radeon_i2c_do_lock(radeon_connector, 1);
 376         edid = drm_get_edid(connector, &radeon_connector->ddc_bus->adapter);
 377         radeon_i2c_do_lock(radeon_connector, 0);
 378         if (edid) {
 379                 kfree(edid);
 380         }
 381         return ret;
 382 }
 383
 384 static inline uint32_t radeon_div(uint64_t n, uint32_t d)
 385 {
 386         uint64_t mod;
 387
 388         n += d / 2;
 389
 390         mod = do_div(n, d);
 391         return n;
 392 }
 393
 394 void radeon_compute_pll(struct radeon_pll *pll,
 395                         uint64_t freq,
 396                         uint32_t *dot_clock_p,
 397                         uint32_t *fb_div_p,
 398                         uint32_t *frac_fb_div_p,
 399                         uint32_t *ref_div_p,
 400                         uint32_t *post_div_p,
 401                         int flags)
 402 {
 403         uint32_t min_ref_div = pll->min_ref_div;
 404         uint32_t max_ref_div = pll->max_ref_div;
 405         uint32_t min_fractional_feed_div = 0;
 406         uint32_t max_fractional_feed_div = 0;
 407         uint32_t best_vco = pll->best_vco;
 408         uint32_t best_post_div = 1;
 409         uint32_t best_ref_div = 1;
 410         uint32_t best_feedback_div = 1;
 411         uint32_t best_frac_feedback_div = 0;
 412         uint32_t best_freq = -1;
 413         uint32_t best_error = 0xffffffff;
 414         uint32_t best_vco_diff = 1;
 415         uint32_t post_div;
 416
 417         DRM_DEBUG("PLL freq %llu %u %u\n", freq, pll->min_ref_div, pll->max_ref_div);
 418         freq = freq * 1000;
 419
 420         if (flags & RADEON_PLL_USE_REF_DIV)
 421                 min_ref_div = max_ref_div = pll->reference_div;
 422         else {
 423                 while (min_ref_div < max_ref_div-1) {
 424                         uint32_t mid = (min_ref_div + max_ref_div) / 2;
 425                         uint32_t pll_in = pll->reference_freq / mid;
 426                         if (pll_in < pll->pll_in_min)
 427                                 max_ref_div = mid;
 428                         else if (pll_in > pll->pll_in_max)
 429                                 min_ref_div = mid;
 430                         else
 431                                 break;
 432                 }
 433         }
 434
 435         if (flags & RADEON_PLL_USE_FRAC_FB_DIV) {
 436                 min_fractional_feed_div = pll->min_frac_feedback_div;
 437                 max_fractional_feed_div = pll->max_frac_feedback_div;
 438         }
 439
 440         for (post_div = pll->min_post_div; post_div <= pll->max_post_div; ++post_div) {
 441                 uint32_t ref_div;
 442
 443                 if ((flags & RADEON_PLL_NO_ODD_POST_DIV) && (post_div & 1))
 444                         continue;
 445
 446                 /* legacy radeons only have a few post_divs */
 447                 if (flags & RADEON_PLL_LEGACY) {
 448                         if ((post_div == 5) ||
 449                             (post_div == 7) ||
 450                             (post_div == 9) ||
 451                             (post_div == 10) ||
 452                             (post_div == 11) ||
 453                             (post_div == 13) ||
 454                             (post_div == 14) ||
 455                             (post_div == 15))
 456                                 continue;
 457                 }
 458
 459                 for (ref_div = min_ref_div; ref_div <= max_ref_div; ++ref_div) {
 460                         uint32_t feedback_div, current_freq = 0, error, vco_diff;
 461                         uint32_t pll_in = pll->reference_freq / ref_div;
 462                         uint32_t min_feed_div = pll->min_feedback_div;
 463                         uint32_t max_feed_div = pll->max_feedback_div + 1;
 464
 465                         if (pll_in < pll->pll_in_min || pll_in > pll->pll_in_max)
 466                                 continue;
 467
 468                         while (min_feed_div < max_feed_div) {
 469                                 uint32_t vco;
 470                                 uint32_t min_frac_feed_div = min_fractional_feed_div;
 471                                 uint32_t max_frac_feed_div = max_fractional_feed_div + 1;
 472                                 uint32_t frac_feedback_div;
 473                                 uint64_t tmp;
 474
 475                                 feedback_div = (min_feed_div + max_feed_div) / 2;
 476
 477                                 tmp = (uint64_t)pll->reference_freq * feedback_div;
 478                                 vco = radeon_div(tmp, ref_div);
 479
 480                                 if (vco < pll->pll_out_min) {
 481                                         min_feed_div = feedback_div + 1;
 482                                         continue;
 483                                 } else if (vco > pll->pll_out_max) {
 484                                         max_feed_div = feedback_div;
 485                                         continue;
 486                                 }
 487
 488                                 while (min_frac_feed_div < max_frac_feed_div) {
 489                                         frac_feedback_div = (min_frac_feed_div + max_frac_feed_div) / 2;
 490                                         tmp = (uint64_t)pll->reference_freq * 10000 * feedback_div;
 491                                         tmp += (uint64_t)pll->reference_freq * 1000 * frac_feedback_div;
 492                                         current_freq = radeon_div(tmp, ref_div * post_div);
 493
 494                                         error = abs(current_freq - freq);
 495                                         vco_diff = abs(vco - best_vco);
 496
 497                                         if ((best_vco == 0 && error < best_error) ||
 498                                             (best_vco != 0 &&
 499                                              (error < best_error - 100 ||
 500                                               (abs(error - best_error) < 100 && vco_diff < best_vco_diff)))) {
 501                                                 best_post_div = post_div;
 502                                                 best_ref_div = ref_div;
 503                                                 best_feedback_div = feedback_div;
 504                                                 best_frac_feedback_div = frac_feedback_div;
 505                                                 best_freq = current_freq;
 506                                                 best_error = error;
 507                                                 best_vco_diff = vco_diff;
 508                                         } else if (current_freq == freq) {
 509                                                 if (best_freq == -1) {
 510                                                         best_post_div = post_div;
 511                                                         best_ref_div = ref_div;
 512                                                         best_feedback_div = feedback_div;
 513                                                         best_frac_feedback_div = frac_feedback_div;
 514                                                         best_freq = current_freq;
 515                                                         best_error = error;
 516                                                         best_vco_diff = vco_diff;
 517                                                 } else if (((flags & RADEON_PLL_PREFER_LOW_REF_DIV) && (ref_div < best_ref_div)) ||
 518                                                            ((flags & RADEON_PLL_PREFER_HIGH_REF_DIV) && (ref_div > best_ref_div)) ||
 519                                                            ((flags & RADEON_PLL_PREFER_LOW_FB_DIV) && (feedback_div < best_feedback_div)) ||
 520                                                            ((flags & RADEON_PLL_PREFER_HIGH_FB_DIV) && (feedback_div > best_feedback_div)) ||
 521                                                            ((flags & RADEON_PLL_PREFER_LOW_POST_DIV) && (post_div < best_post_div)) ||
 522                                                            ((flags & RADEON_PLL_PREFER_HIGH_POST_DIV) && (post_div > best_post_div))) {
 523                                                         best_post_div = post_div;
 524                                                         best_ref_div = ref_div;
 525                                                         best_feedback_div = feedback_div;
 526                                                         best_frac_feedback_div = frac_feedback_div;
 527                                                         best_freq = current_freq;
 528                                                         best_error = error;
 529                                                         best_vco_diff = vco_diff;
 530                                                 }
 531                                         }
 532                                         if (current_freq < freq)
 533                                                 min_frac_feed_div = frac_feedback_div + 1;
 534                                         else
 535                                                 max_frac_feed_div = frac_feedback_div;
 536                                 }
 537                                 if (current_freq < freq)
 538                                         min_feed_div = feedback_div + 1;
 539                                 else
 540                                         max_feed_div = feedback_div;
 541                         }
 542                 }
 543         }
 544
 545         *dot_clock_p = best_freq / 10000;
 546         *fb_div_p = best_feedback_div;
 547         *frac_fb_div_p = best_frac_feedback_div;
 548         *ref_div_p = best_ref_div;
 549         *post_div_p = best_post_div;
 550 }
 551
 552 static void radeon_user_framebuffer_destroy(struct drm_framebuffer *fb)
 553 {
 554         struct radeon_framebuffer *radeon_fb = to_radeon_framebuffer(fb);
 555         struct drm_device *dev = fb->dev;
 556
 557         if (fb->fbdev)
 558                 radeonfb_remove(dev, fb);
 559
 560         if (radeon_fb->obj) {
 561                 radeon_gem_object_unpin(radeon_fb->obj);
 562                 mutex_lock(&dev->struct_mutex);
 563                 drm_gem_object_unreference(radeon_fb->obj);
 564                 mutex_unlock(&dev->struct_mutex);
 565         }
 566         drm_framebuffer_cleanup(fb);
 567         kfree(radeon_fb);
 568 }
 569
 570 static int radeon_user_framebuffer_create_handle(struct drm_framebuffer *fb,
 571                                                   struct drm_file *file_priv,
 572                                                   unsigned int *handle)
 573 {
 574         struct radeon_framebuffer *radeon_fb = to_radeon_framebuffer(fb);
 575
 576         return drm_gem_handle_create(file_priv, radeon_fb->obj, handle);
 577 }
 578
 579 static const struct drm_framebuffer_funcs radeon_fb_funcs = {
 580         .destroy = radeon_user_framebuffer_destroy,
 581         .create_handle = radeon_user_framebuffer_create_handle,
 582 };
 583
 584 struct drm_framebuffer *
 585 radeon_framebuffer_create(struct drm_device *dev,
 586                           struct drm_mode_fb_cmd *mode_cmd,
 587                           struct drm_gem_object *obj)
 588 {
 589         struct radeon_framebuffer *radeon_fb;
 590
 591         radeon_fb = kzalloc(sizeof(*radeon_fb), GFP_KERNEL);
 592         if (radeon_fb == NULL) {
 593                 return NULL;
 594         }
 595         drm_framebuffer_init(dev, &radeon_fb->base, &radeon_fb_funcs);
 596         drm_helper_mode_fill_fb_struct(&radeon_fb->base, mode_cmd);
 597         radeon_fb->obj = obj;
 598         return &radeon_fb->base;
 599 }
 600
 601 static struct drm_framebuffer *
 602 radeon_user_framebuffer_create(struct drm_device *dev,
 603                                struct drm_file *file_priv,
 604                                struct drm_mode_fb_cmd *mode_cmd)
 605 {
 606         struct drm_gem_object *obj;
 607
 608         obj = drm_gem_object_lookup(dev, file_priv, mode_cmd->handle);
 609
 610         return radeon_framebuffer_create(dev, mode_cmd, obj);
 611 }
 612
 613 static const struct drm_mode_config_funcs radeon_mode_funcs = {
 614         .fb_create = radeon_user_framebuffer_create,
 615         .fb_changed = radeonfb_probe,
 616 };
 617
 618 int radeon_modeset_init(struct radeon_device *rdev)
 619 {
 620         int num_crtc = 2, i;
 621         int ret;
 622
 623         drm_mode_config_init(rdev->ddev);
 624         rdev->mode_info.mode_config_initialized = true;
 625
 626         rdev->ddev->mode_config.funcs = (void *)&radeon_mode_funcs;
 627
 628         if (ASIC_IS_AVIVO(rdev)) {
 629                 rdev->ddev->mode_config.max_width = 8192;
 630                 rdev->ddev->mode_config.max_height = 8192;
 631         } else {
 632                 rdev->ddev->mode_config.max_width = 4096;
 633                 rdev->ddev->mode_config.max_height = 4096;
 634         }
 635
 636         rdev->ddev->mode_config.fb_base = rdev->mc.aper_base;
 637
 638         /* allocate crtcs - TODO single crtc */
 639         for (i = 0; i < num_crtc; i++) {
 640                 radeon_crtc_init(rdev->ddev, i);
 641         }
 642
 643         /* okay we should have all the bios connectors */
 644         ret = radeon_setup_enc_conn(rdev->ddev);
 645         if (!ret) {
 646                 return ret;
 647         }
 648         drm_helper_initial_config(rdev->ddev);
 649         return 0;
 650 }
 651
 652 void radeon_modeset_fini(struct radeon_device *rdev)
 653 {
 654         if (rdev->mode_info.mode_config_initialized) {
 655                 drm_mode_config_cleanup(rdev->ddev);
 656                 rdev->mode_info.mode_config_initialized = false;
 657         }
 658 }
 659
 660 void radeon_init_disp_bandwidth(struct drm_device *dev)
 661 {
 662         struct radeon_device *rdev = dev->dev_private;
 663         struct drm_display_mode *modes[2];
 664         int pixel_bytes[2];
 665         struct drm_crtc *crtc;
 666
 667         pixel_bytes[0] = pixel_bytes[1] = 0;
 668         modes[0] = modes[1] = NULL;
 669
 670         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 671                 struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
 672
 673                 if (crtc->enabled && crtc->fb) {
 674                         modes[radeon_crtc->crtc_id] = &crtc->mode;
 675                         pixel_bytes[radeon_crtc->crtc_id] = crtc->fb->bits_per_pixel / 8;
 676                 }
 677         }
 678
 679         if (ASIC_IS_AVIVO(rdev)) {
 680                 radeon_init_disp_bw_avivo(dev,
 681                                           modes[0],
 682                                           pixel_bytes[0],
 683                                           modes[1],
 684                                           pixel_bytes[1]);
 685         } else {
 686                 radeon_init_disp_bw_legacy(dev,
 687                                            modes[0],
 688                                            pixel_bytes[0],
 689                                            modes[1],
 690                                            pixel_bytes[1]);
 691         }
 692 }