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_KMS("%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 evergreen_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
  78         DRM_DEBUG_KMS("%d\n", radeon_crtc->crtc_id);
  79         WREG32(EVERGREEN_DC_LUT_CONTROL + radeon_crtc->crtc_offset, 0);
  80
  81         WREG32(EVERGREEN_DC_LUT_BLACK_OFFSET_BLUE + radeon_crtc->crtc_offset, 0);
  82         WREG32(EVERGREEN_DC_LUT_BLACK_OFFSET_GREEN + radeon_crtc->crtc_offset, 0);
  83         WREG32(EVERGREEN_DC_LUT_BLACK_OFFSET_RED + radeon_crtc->crtc_offset, 0);
  84
  85         WREG32(EVERGREEN_DC_LUT_WHITE_OFFSET_BLUE + radeon_crtc->crtc_offset, 0xffff);
  86         WREG32(EVERGREEN_DC_LUT_WHITE_OFFSET_GREEN + radeon_crtc->crtc_offset, 0xffff);
  87         WREG32(EVERGREEN_DC_LUT_WHITE_OFFSET_RED + radeon_crtc->crtc_offset, 0xffff);
  88
  89         WREG32(EVERGREEN_DC_LUT_RW_MODE + radeon_crtc->crtc_offset, 0);
  90         WREG32(EVERGREEN_DC_LUT_WRITE_EN_MASK + radeon_crtc->crtc_offset, 0x00000007);
  91
  92         WREG32(EVERGREEN_DC_LUT_RW_INDEX + radeon_crtc->crtc_offset, 0);
  93         for (i = 0; i < 256; i++) {
  94                 WREG32(EVERGREEN_DC_LUT_30_COLOR + radeon_crtc->crtc_offset,
  95                        (radeon_crtc->lut_r[i] << 20) |
  96                        (radeon_crtc->lut_g[i] << 10) |
  97                        (radeon_crtc->lut_b[i] << 0));
  98         }
  99 }
 100
 101 static void legacy_crtc_load_lut(struct drm_crtc *crtc)
 102 {
 103         struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
 104         struct drm_device *dev = crtc->dev;
 105         struct radeon_device *rdev = dev->dev_private;
 106         int i;
 107         uint32_t dac2_cntl;
 108
 109         dac2_cntl = RREG32(RADEON_DAC_CNTL2);
 110         if (radeon_crtc->crtc_id == 0)
 111                 dac2_cntl &= (uint32_t)~RADEON_DAC2_PALETTE_ACC_CTL;
 112         else
 113                 dac2_cntl |= RADEON_DAC2_PALETTE_ACC_CTL;
 114         WREG32(RADEON_DAC_CNTL2, dac2_cntl);
 115
 116         WREG8(RADEON_PALETTE_INDEX, 0);
 117         for (i = 0; i < 256; i++) {
 118                 WREG32(RADEON_PALETTE_30_DATA,
 119                              (radeon_crtc->lut_r[i] << 20) |
 120                              (radeon_crtc->lut_g[i] << 10) |
 121                              (radeon_crtc->lut_b[i] << 0));
 122         }
 123 }
 124
 125 void radeon_crtc_load_lut(struct drm_crtc *crtc)
 126 {
 127         struct drm_device *dev = crtc->dev;
 128         struct radeon_device *rdev = dev->dev_private;
 129
 130         if (!crtc->enabled)
 131                 return;
 132
 133         if (ASIC_IS_DCE4(rdev))
 134                 evergreen_crtc_load_lut(crtc);
 135         else if (ASIC_IS_AVIVO(rdev))
 136                 avivo_crtc_load_lut(crtc);
 137         else
 138                 legacy_crtc_load_lut(crtc);
 139 }
 140
 141 /** Sets the color ramps on behalf of fbcon */
 142 void radeon_crtc_fb_gamma_set(struct drm_crtc *crtc, u16 red, u16 green,
 143                               u16 blue, int regno)
 144 {
 145         struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
 146
 147         radeon_crtc->lut_r[regno] = red >> 6;
 148         radeon_crtc->lut_g[regno] = green >> 6;
 149         radeon_crtc->lut_b[regno] = blue >> 6;
 150 }
 151
 152 /** Gets the color ramps on behalf of fbcon */
 153 void radeon_crtc_fb_gamma_get(struct drm_crtc *crtc, u16 *red, u16 *green,
 154                               u16 *blue, int regno)
 155 {
 156         struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
 157
 158         *red = radeon_crtc->lut_r[regno] << 6;
 159         *green = radeon_crtc->lut_g[regno] << 6;
 160         *blue = radeon_crtc->lut_b[regno] << 6;
 161 }
 162
 163 static void radeon_crtc_gamma_set(struct drm_crtc *crtc, u16 *red, u16 *green,
 164                                   u16 *blue, uint32_t start, uint32_t size)
 165 {
 166         struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
 167         int end = (start + size > 256) ? 256 : start + size, i;
 168
 169         /* userspace palettes are always correct as is */
 170         for (i = start; i < end; i++) {
 171                 radeon_crtc->lut_r[i] = red[i] >> 6;
 172                 radeon_crtc->lut_g[i] = green[i] >> 6;
 173                 radeon_crtc->lut_b[i] = blue[i] >> 6;
 174         }
 175         radeon_crtc_load_lut(crtc);
 176 }
 177
 178 static void radeon_crtc_destroy(struct drm_crtc *crtc)
 179 {
 180         struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
 181
 182         drm_crtc_cleanup(crtc);
 183         kfree(radeon_crtc);
 184 }
 185
 186 static const struct drm_crtc_funcs radeon_crtc_funcs = {
 187         .cursor_set = radeon_crtc_cursor_set,
 188         .cursor_move = radeon_crtc_cursor_move,
 189         .gamma_set = radeon_crtc_gamma_set,
 190         .set_config = drm_crtc_helper_set_config,
 191         .destroy = radeon_crtc_destroy,
 192 };
 193
 194 static void radeon_crtc_init(struct drm_device *dev, int index)
 195 {
 196         struct radeon_device *rdev = dev->dev_private;
 197         struct radeon_crtc *radeon_crtc;
 198         int i;
 199
 200         radeon_crtc = kzalloc(sizeof(struct radeon_crtc) + (RADEONFB_CONN_LIMIT * sizeof(struct drm_connector *)), GFP_KERNEL);
 201         if (radeon_crtc == NULL)
 202                 return;
 203
 204         drm_crtc_init(dev, &radeon_crtc->base, &radeon_crtc_funcs);
 205
 206         drm_mode_crtc_set_gamma_size(&radeon_crtc->base, 256);
 207         radeon_crtc->crtc_id = index;
 208         rdev->mode_info.crtcs[index] = radeon_crtc;
 209
 210 #if 0
 211         radeon_crtc->mode_set.crtc = &radeon_crtc->base;
 212         radeon_crtc->mode_set.connectors = (struct drm_connector **)(radeon_crtc + 1);
 213         radeon_crtc->mode_set.num_connectors = 0;
 214 #endif
 215
 216         for (i = 0; i < 256; i++) {
 217                 radeon_crtc->lut_r[i] = i << 2;
 218                 radeon_crtc->lut_g[i] = i << 2;
 219                 radeon_crtc->lut_b[i] = i << 2;
 220         }
 221
 222         if (rdev->is_atom_bios && (ASIC_IS_AVIVO(rdev) || radeon_r4xx_atom))
 223                 radeon_atombios_init_crtc(dev, radeon_crtc);
 224         else
 225                 radeon_legacy_init_crtc(dev, radeon_crtc);
 226 }
 227
 228 static const char *encoder_names[34] = {
 229         "NONE",
 230         "INTERNAL_LVDS",
 231         "INTERNAL_TMDS1",
 232         "INTERNAL_TMDS2",
 233         "INTERNAL_DAC1",
 234         "INTERNAL_DAC2",
 235         "INTERNAL_SDVOA",
 236         "INTERNAL_SDVOB",
 237         "SI170B",
 238         "CH7303",
 239         "CH7301",
 240         "INTERNAL_DVO1",
 241         "EXTERNAL_SDVOA",
 242         "EXTERNAL_SDVOB",
 243         "TITFP513",
 244         "INTERNAL_LVTM1",
 245         "VT1623",
 246         "HDMI_SI1930",
 247         "HDMI_INTERNAL",
 248         "INTERNAL_KLDSCP_TMDS1",
 249         "INTERNAL_KLDSCP_DVO1",
 250         "INTERNAL_KLDSCP_DAC1",
 251         "INTERNAL_KLDSCP_DAC2",
 252         "SI178",
 253         "MVPU_FPGA",
 254         "INTERNAL_DDI",
 255         "VT1625",
 256         "HDMI_SI1932",
 257         "DP_AN9801",
 258         "DP_DP501",
 259         "INTERNAL_UNIPHY",
 260         "INTERNAL_KLDSCP_LVTMA",
 261         "INTERNAL_UNIPHY1",
 262         "INTERNAL_UNIPHY2",
 263 };
 264
 265 static const char *connector_names[15] = {
 266         "Unknown",
 267         "VGA",
 268         "DVI-I",
 269         "DVI-D",
 270         "DVI-A",
 271         "Composite",
 272         "S-video",
 273         "LVDS",
 274         "Component",
 275         "DIN",
 276         "DisplayPort",
 277         "HDMI-A",
 278         "HDMI-B",
 279         "TV",
 280         "eDP",
 281 };
 282
 283 static const char *hpd_names[6] = {
 284         "HPD1",
 285         "HPD2",
 286         "HPD3",
 287         "HPD4",
 288         "HPD5",
 289         "HPD6",
 290 };
 291
 292 static void radeon_print_display_setup(struct drm_device *dev)
 293 {
 294         struct drm_connector *connector;
 295         struct radeon_connector *radeon_connector;
 296         struct drm_encoder *encoder;
 297         struct radeon_encoder *radeon_encoder;
 298         uint32_t devices;
 299         int i = 0;
 300
 301         DRM_INFO("Radeon Display Connectors\n");
 302         list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
 303                 radeon_connector = to_radeon_connector(connector);
 304                 DRM_INFO("Connector %d:\n", i);
 305                 DRM_INFO("  %s\n", connector_names[connector->connector_type]);
 306                 if (radeon_connector->hpd.hpd != RADEON_HPD_NONE)
 307                         DRM_INFO("  %s\n", hpd_names[radeon_connector->hpd.hpd]);
 308                 if (radeon_connector->ddc_bus) {
 309                         DRM_INFO("  DDC: 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x\n",
 310                                  radeon_connector->ddc_bus->rec.mask_clk_reg,
 311                                  radeon_connector->ddc_bus->rec.mask_data_reg,
 312                                  radeon_connector->ddc_bus->rec.a_clk_reg,
 313                                  radeon_connector->ddc_bus->rec.a_data_reg,
 314                                  radeon_connector->ddc_bus->rec.en_clk_reg,
 315                                  radeon_connector->ddc_bus->rec.en_data_reg,
 316                                  radeon_connector->ddc_bus->rec.y_clk_reg,
 317                                  radeon_connector->ddc_bus->rec.y_data_reg);
 318                         if (radeon_connector->router_bus)
 319                                 DRM_INFO("  DDC Router 0x%x/0x%x\n",
 320                                          radeon_connector->router.mux_control_pin,
 321                                          radeon_connector->router.mux_state);
 322                 } else {
 323                         if (connector->connector_type == DRM_MODE_CONNECTOR_VGA ||
 324                             connector->connector_type == DRM_MODE_CONNECTOR_DVII ||
 325                             connector->connector_type == DRM_MODE_CONNECTOR_DVID ||
 326                             connector->connector_type == DRM_MODE_CONNECTOR_DVIA ||
 327                             connector->connector_type == DRM_MODE_CONNECTOR_HDMIA ||
 328                             connector->connector_type == DRM_MODE_CONNECTOR_HDMIB)
 329                                 DRM_INFO("  DDC: no ddc bus - possible BIOS bug - please report to xorg-driver-ati@lists.x.org\n");
 330                 }
 331                 DRM_INFO("  Encoders:\n");
 332                 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
 333                         radeon_encoder = to_radeon_encoder(encoder);
 334                         devices = radeon_encoder->devices & radeon_connector->devices;
 335                         if (devices) {
 336                                 if (devices & ATOM_DEVICE_CRT1_SUPPORT)
 337                                         DRM_INFO("    CRT1: %s\n", encoder_names[radeon_encoder->encoder_id]);
 338                                 if (devices & ATOM_DEVICE_CRT2_SUPPORT)
 339                                         DRM_INFO("    CRT2: %s\n", encoder_names[radeon_encoder->encoder_id]);
 340                                 if (devices & ATOM_DEVICE_LCD1_SUPPORT)
 341                                         DRM_INFO("    LCD1: %s\n", encoder_names[radeon_encoder->encoder_id]);
 342                                 if (devices & ATOM_DEVICE_DFP1_SUPPORT)
 343                                         DRM_INFO("    DFP1: %s\n", encoder_names[radeon_encoder->encoder_id]);
 344                                 if (devices & ATOM_DEVICE_DFP2_SUPPORT)
 345                                         DRM_INFO("    DFP2: %s\n", encoder_names[radeon_encoder->encoder_id]);
 346                                 if (devices & ATOM_DEVICE_DFP3_SUPPORT)
 347                                         DRM_INFO("    DFP3: %s\n", encoder_names[radeon_encoder->encoder_id]);
 348                                 if (devices & ATOM_DEVICE_DFP4_SUPPORT)
 349                                         DRM_INFO("    DFP4: %s\n", encoder_names[radeon_encoder->encoder_id]);
 350                                 if (devices & ATOM_DEVICE_DFP5_SUPPORT)
 351                                         DRM_INFO("    DFP5: %s\n", encoder_names[radeon_encoder->encoder_id]);
 352                                 if (devices & ATOM_DEVICE_TV1_SUPPORT)
 353                                         DRM_INFO("    TV1: %s\n", encoder_names[radeon_encoder->encoder_id]);
 354                                 if (devices & ATOM_DEVICE_CV_SUPPORT)
 355                                         DRM_INFO("    CV: %s\n", encoder_names[radeon_encoder->encoder_id]);
 356                         }
 357                 }
 358                 i++;
 359         }
 360 }
 361
 362 static bool radeon_setup_enc_conn(struct drm_device *dev)
 363 {
 364         struct radeon_device *rdev = dev->dev_private;
 365         struct drm_connector *drm_connector;
 366         bool ret = false;
 367
 368         if (rdev->bios) {
 369                 if (rdev->is_atom_bios) {
 370                         ret = radeon_get_atom_connector_info_from_supported_devices_table(dev);
 371                         if (ret == false)
 372                                 ret = radeon_get_atom_connector_info_from_object_table(dev);
 373                 } else {
 374                         ret = radeon_get_legacy_connector_info_from_bios(dev);
 375                         if (ret == false)
 376                                 ret = radeon_get_legacy_connector_info_from_table(dev);
 377                 }
 378         } else {
 379                 if (!ASIC_IS_AVIVO(rdev))
 380                         ret = radeon_get_legacy_connector_info_from_table(dev);
 381         }
 382         if (ret) {
 383                 radeon_setup_encoder_clones(dev);
 384                 radeon_print_display_setup(dev);
 385                 list_for_each_entry(drm_connector, &dev->mode_config.connector_list, head)
 386                         radeon_ddc_dump(drm_connector);
 387         }
 388
 389         return ret;
 390 }
 391
 392 int radeon_ddc_get_modes(struct radeon_connector *radeon_connector)
 393 {
 394         struct drm_device *dev = radeon_connector->base.dev;
 395         struct radeon_device *rdev = dev->dev_private;
 396         int ret = 0;
 397
 398         /* on hw with routers, select right port */
 399         if (radeon_connector->router.valid)
 400                 radeon_router_select_port(radeon_connector);
 401
 402         if ((radeon_connector->base.connector_type == DRM_MODE_CONNECTOR_DisplayPort) ||
 403             (radeon_connector->base.connector_type == DRM_MODE_CONNECTOR_eDP)) {
 404                 struct radeon_connector_atom_dig *dig = radeon_connector->con_priv;
 405                 if ((dig->dp_sink_type == CONNECTOR_OBJECT_ID_DISPLAYPORT ||
 406                      dig->dp_sink_type == CONNECTOR_OBJECT_ID_eDP) && dig->dp_i2c_bus)
 407                         radeon_connector->edid = drm_get_edid(&radeon_connector->base, &dig->dp_i2c_bus->adapter);
 408         }
 409         if (!radeon_connector->ddc_bus)
 410                 return -1;
 411         if (!radeon_connector->edid) {
 412                 radeon_connector->edid = drm_get_edid(&radeon_connector->base, &radeon_connector->ddc_bus->adapter);
 413         }
 414         /* some servers provide a hardcoded edid in rom for KVMs */
 415         if (!radeon_connector->edid)
 416                 radeon_connector->edid = radeon_combios_get_hardcoded_edid(rdev);
 417         if (radeon_connector->edid) {
 418                 drm_mode_connector_update_edid_property(&radeon_connector->base, radeon_connector->edid);
 419                 ret = drm_add_edid_modes(&radeon_connector->base, radeon_connector->edid);
 420                 return ret;
 421         }
 422         drm_mode_connector_update_edid_property(&radeon_connector->base, NULL);
 423         return 0;
 424 }
 425
 426 static int radeon_ddc_dump(struct drm_connector *connector)
 427 {
 428         struct edid *edid;
 429         struct radeon_connector *radeon_connector = to_radeon_connector(connector);
 430         int ret = 0;
 431
 432         /* on hw with routers, select right port */
 433         if (radeon_connector->router.valid)
 434                 radeon_router_select_port(radeon_connector);
 435
 436         if (!radeon_connector->ddc_bus)
 437                 return -1;
 438         edid = drm_get_edid(connector, &radeon_connector->ddc_bus->adapter);
 439         if (edid) {
 440                 kfree(edid);
 441         }
 442         return ret;
 443 }
 444
 445 static inline uint32_t radeon_div(uint64_t n, uint32_t d)
 446 {
 447         uint64_t mod;
 448
 449         n += d / 2;
 450
 451         mod = do_div(n, d);
 452         return n;
 453 }
 454
 455 static void radeon_compute_pll_legacy(struct radeon_pll *pll,
 456                                       uint64_t freq,
 457                                       uint32_t *dot_clock_p,
 458                                       uint32_t *fb_div_p,
 459                                       uint32_t *frac_fb_div_p,
 460                                       uint32_t *ref_div_p,
 461                                       uint32_t *post_div_p)
 462 {
 463         uint32_t min_ref_div = pll->min_ref_div;
 464         uint32_t max_ref_div = pll->max_ref_div;
 465         uint32_t min_post_div = pll->min_post_div;
 466         uint32_t max_post_div = pll->max_post_div;
 467         uint32_t min_fractional_feed_div = 0;
 468         uint32_t max_fractional_feed_div = 0;
 469         uint32_t best_vco = pll->best_vco;
 470         uint32_t best_post_div = 1;
 471         uint32_t best_ref_div = 1;
 472         uint32_t best_feedback_div = 1;
 473         uint32_t best_frac_feedback_div = 0;
 474         uint32_t best_freq = -1;
 475         uint32_t best_error = 0xffffffff;
 476         uint32_t best_vco_diff = 1;
 477         uint32_t post_div;
 478         u32 pll_out_min, pll_out_max;
 479
 480         DRM_DEBUG_KMS("PLL freq %llu %u %u\n", freq, pll->min_ref_div, pll->max_ref_div);
 481         freq = freq * 1000;
 482
 483         if (pll->flags & RADEON_PLL_IS_LCD) {
 484                 pll_out_min = pll->lcd_pll_out_min;
 485                 pll_out_max = pll->lcd_pll_out_max;
 486         } else {
 487                 pll_out_min = pll->pll_out_min;
 488                 pll_out_max = pll->pll_out_max;
 489         }
 490
 491         if (pll->flags & RADEON_PLL_USE_REF_DIV)
 492                 min_ref_div = max_ref_div = pll->reference_div;
 493         else {
 494                 while (min_ref_div < max_ref_div-1) {
 495                         uint32_t mid = (min_ref_div + max_ref_div) / 2;
 496                         uint32_t pll_in = pll->reference_freq / mid;
 497                         if (pll_in < pll->pll_in_min)
 498                                 max_ref_div = mid;
 499                         else if (pll_in > pll->pll_in_max)
 500                                 min_ref_div = mid;
 501                         else
 502                                 break;
 503                 }
 504         }
 505
 506         if (pll->flags & RADEON_PLL_USE_POST_DIV)
 507                 min_post_div = max_post_div = pll->post_div;
 508
 509         if (pll->flags & RADEON_PLL_USE_FRAC_FB_DIV) {
 510                 min_fractional_feed_div = pll->min_frac_feedback_div;
 511                 max_fractional_feed_div = pll->max_frac_feedback_div;
 512         }
 513
 514         for (post_div = min_post_div; post_div <= max_post_div; ++post_div) {
 515                 uint32_t ref_div;
 516
 517                 if ((pll->flags & RADEON_PLL_NO_ODD_POST_DIV) && (post_div & 1))
 518                         continue;
 519
 520                 /* legacy radeons only have a few post_divs */
 521                 if (pll->flags & RADEON_PLL_LEGACY) {
 522                         if ((post_div == 5) ||
 523                             (post_div == 7) ||
 524                             (post_div == 9) ||
 525                             (post_div == 10) ||
 526                             (post_div == 11) ||
 527                             (post_div == 13) ||
 528                             (post_div == 14) ||
 529                             (post_div == 15))
 530                                 continue;
 531                 }
 532
 533                 for (ref_div = min_ref_div; ref_div <= max_ref_div; ++ref_div) {
 534                         uint32_t feedback_div, current_freq = 0, error, vco_diff;
 535                         uint32_t pll_in = pll->reference_freq / ref_div;
 536                         uint32_t min_feed_div = pll->min_feedback_div;
 537                         uint32_t max_feed_div = pll->max_feedback_div + 1;
 538
 539                         if (pll_in < pll->pll_in_min || pll_in > pll->pll_in_max)
 540                                 continue;
 541
 542                         while (min_feed_div < max_feed_div) {
 543                                 uint32_t vco;
 544                                 uint32_t min_frac_feed_div = min_fractional_feed_div;
 545                                 uint32_t max_frac_feed_div = max_fractional_feed_div + 1;
 546                                 uint32_t frac_feedback_div;
 547                                 uint64_t tmp;
 548
 549                                 feedback_div = (min_feed_div + max_feed_div) / 2;
 550
 551                                 tmp = (uint64_t)pll->reference_freq * feedback_div;
 552                                 vco = radeon_div(tmp, ref_div);
 553
 554                                 if (vco < pll_out_min) {
 555                                         min_feed_div = feedback_div + 1;
 556                                         continue;
 557                                 } else if (vco > pll_out_max) {
 558                                         max_feed_div = feedback_div;
 559                                         continue;
 560                                 }
 561
 562                                 while (min_frac_feed_div < max_frac_feed_div) {
 563                                         frac_feedback_div = (min_frac_feed_div + max_frac_feed_div) / 2;
 564                                         tmp = (uint64_t)pll->reference_freq * 10000 * feedback_div;
 565                                         tmp += (uint64_t)pll->reference_freq * 1000 * frac_feedback_div;
 566                                         current_freq = radeon_div(tmp, ref_div * post_div);
 567
 568                                         if (pll->flags & RADEON_PLL_PREFER_CLOSEST_LOWER) {
 569                                                 if (freq < current_freq)
 570                                                         error = 0xffffffff;
 571                                                 else
 572                                                         error = freq - current_freq;
 573                                         } else
 574                                                 error = abs(current_freq - freq);
 575                                         vco_diff = abs(vco - best_vco);
 576
 577                                         if ((best_vco == 0 && error < best_error) ||
 578                                             (best_vco != 0 &&
 579                                              ((best_error > 100 && error < best_error - 100) ||
 580                                               (abs(error - best_error) < 100 && vco_diff < best_vco_diff)))) {
 581                                                 best_post_div = post_div;
 582                                                 best_ref_div = ref_div;
 583                                                 best_feedback_div = feedback_div;
 584                                                 best_frac_feedback_div = frac_feedback_div;
 585                                                 best_freq = current_freq;
 586                                                 best_error = error;
 587                                                 best_vco_diff = vco_diff;
 588                                         } else if (current_freq == freq) {
 589                                                 if (best_freq == -1) {
 590                                                         best_post_div = post_div;
 591                                                         best_ref_div = ref_div;
 592                                                         best_feedback_div = feedback_div;
 593                                                         best_frac_feedback_div = frac_feedback_div;
 594                                                         best_freq = current_freq;
 595                                                         best_error = error;
 596                                                         best_vco_diff = vco_diff;
 597                                                 } else if (((pll->flags & RADEON_PLL_PREFER_LOW_REF_DIV) && (ref_div < best_ref_div)) ||
 598                                                            ((pll->flags & RADEON_PLL_PREFER_HIGH_REF_DIV) && (ref_div > best_ref_div)) ||
 599                                                            ((pll->flags & RADEON_PLL_PREFER_LOW_FB_DIV) && (feedback_div < best_feedback_div)) ||
 600                                                            ((pll->flags & RADEON_PLL_PREFER_HIGH_FB_DIV) && (feedback_div > best_feedback_div)) ||
 601                                                            ((pll->flags & RADEON_PLL_PREFER_LOW_POST_DIV) && (post_div < best_post_div)) ||
 602                                                            ((pll->flags & RADEON_PLL_PREFER_HIGH_POST_DIV) && (post_div > best_post_div))) {
 603                                                         best_post_div = post_div;
 604                                                         best_ref_div = ref_div;
 605                                                         best_feedback_div = feedback_div;
 606                                                         best_frac_feedback_div = frac_feedback_div;
 607                                                         best_freq = current_freq;
 608                                                         best_error = error;
 609                                                         best_vco_diff = vco_diff;
 610                                                 }
 611                                         }
 612                                         if (current_freq < freq)
 613                                                 min_frac_feed_div = frac_feedback_div + 1;
 614                                         else
 615                                                 max_frac_feed_div = frac_feedback_div;
 616                                 }
 617                                 if (current_freq < freq)
 618                                         min_feed_div = feedback_div + 1;
 619                                 else
 620                                         max_feed_div = feedback_div;
 621                         }
 622                 }
 623         }
 624
 625         *dot_clock_p = best_freq / 10000;
 626         *fb_div_p = best_feedback_div;
 627         *frac_fb_div_p = best_frac_feedback_div;
 628         *ref_div_p = best_ref_div;
 629         *post_div_p = best_post_div;
 630 }
 631
 632 static bool
 633 calc_fb_div(struct radeon_pll *pll,
 634             uint32_t freq,
 635             uint32_t post_div,
 636             uint32_t ref_div,
 637             uint32_t *fb_div,
 638             uint32_t *fb_div_frac)
 639 {
 640         fixed20_12 feedback_divider, a, b;
 641         u32 vco_freq;
 642
 643         vco_freq = freq * post_div;
 644         /* feedback_divider = vco_freq * ref_div / pll->reference_freq; */
 645         a.full = dfixed_const(pll->reference_freq);
 646         feedback_divider.full = dfixed_const(vco_freq);
 647         feedback_divider.full = dfixed_div(feedback_divider, a);
 648         a.full = dfixed_const(ref_div);
 649         feedback_divider.full = dfixed_mul(feedback_divider, a);
 650
 651         if (pll->flags & RADEON_PLL_USE_FRAC_FB_DIV) {
 652                 /* feedback_divider = floor((feedback_divider * 10.0) + 0.5) * 0.1; */
 653                 a.full = dfixed_const(10);
 654                 feedback_divider.full = dfixed_mul(feedback_divider, a);
 655                 feedback_divider.full += dfixed_const_half(0);
 656                 feedback_divider.full = dfixed_floor(feedback_divider);
 657                 feedback_divider.full = dfixed_div(feedback_divider, a);
 658
 659                 /* *fb_div = floor(feedback_divider); */
 660                 a.full = dfixed_floor(feedback_divider);
 661                 *fb_div = dfixed_trunc(a);
 662                 /* *fb_div_frac = fmod(feedback_divider, 1.0) * 10.0; */
 663                 a.full = dfixed_const(10);
 664                 b.full = dfixed_mul(feedback_divider, a);
 665
 666                 feedback_divider.full = dfixed_floor(feedback_divider);
 667                 feedback_divider.full = dfixed_mul(feedback_divider, a);
 668                 feedback_divider.full = b.full - feedback_divider.full;
 669                 *fb_div_frac = dfixed_trunc(feedback_divider);
 670         } else {
 671                 /* *fb_div = floor(feedback_divider + 0.5); */
 672                 feedback_divider.full += dfixed_const_half(0);
 673                 feedback_divider.full = dfixed_floor(feedback_divider);
 674
 675                 *fb_div = dfixed_trunc(feedback_divider);
 676                 *fb_div_frac = 0;
 677         }
 678
 679         if (((*fb_div) < pll->min_feedback_div) || ((*fb_div) > pll->max_feedback_div))
 680                 return false;
 681         else
 682                 return true;
 683 }
 684
 685 static bool
 686 calc_fb_ref_div(struct radeon_pll *pll,
 687                 uint32_t freq,
 688                 uint32_t post_div,
 689                 uint32_t *fb_div,
 690                 uint32_t *fb_div_frac,
 691                 uint32_t *ref_div)
 692 {
 693         fixed20_12 ffreq, max_error, error, pll_out, a;
 694         u32 vco;
 695         u32 pll_out_min, pll_out_max;
 696
 697         if (pll->flags & RADEON_PLL_IS_LCD) {
 698                 pll_out_min = pll->lcd_pll_out_min;
 699                 pll_out_max = pll->lcd_pll_out_max;
 700         } else {
 701                 pll_out_min = pll->pll_out_min;
 702                 pll_out_max = pll->pll_out_max;
 703         }
 704
 705         ffreq.full = dfixed_const(freq);
 706         /* max_error = ffreq * 0.0025; */
 707         a.full = dfixed_const(400);
 708         max_error.full = dfixed_div(ffreq, a);
 709
 710         for ((*ref_div) = pll->min_ref_div; (*ref_div) < pll->max_ref_div; ++(*ref_div)) {
 711                 if (calc_fb_div(pll, freq, post_div, (*ref_div), fb_div, fb_div_frac)) {
 712                         vco = pll->reference_freq * (((*fb_div) * 10) + (*fb_div_frac));
 713                         vco = vco / ((*ref_div) * 10);
 714
 715                         if ((vco < pll_out_min) || (vco > pll_out_max))
 716                                 continue;
 717
 718                         /* pll_out = vco / post_div; */
 719                         a.full = dfixed_const(post_div);
 720                         pll_out.full = dfixed_const(vco);
 721                         pll_out.full = dfixed_div(pll_out, a);
 722
 723                         if (pll_out.full >= ffreq.full) {
 724                                 error.full = pll_out.full - ffreq.full;
 725                                 if (error.full <= max_error.full)
 726                                         return true;
 727                         }
 728                 }
 729         }
 730         return false;
 731 }
 732
 733 static void radeon_compute_pll_new(struct radeon_pll *pll,
 734                                    uint64_t freq,
 735                                    uint32_t *dot_clock_p,
 736                                    uint32_t *fb_div_p,
 737                                    uint32_t *frac_fb_div_p,
 738                                    uint32_t *ref_div_p,
 739                                    uint32_t *post_div_p)
 740 {
 741         u32 fb_div = 0, fb_div_frac = 0, post_div = 0, ref_div = 0;
 742         u32 best_freq = 0, vco_frequency;
 743         u32 pll_out_min, pll_out_max;
 744
 745         if (pll->flags & RADEON_PLL_IS_LCD) {
 746                 pll_out_min = pll->lcd_pll_out_min;
 747                 pll_out_max = pll->lcd_pll_out_max;
 748         } else {
 749                 pll_out_min = pll->pll_out_min;
 750                 pll_out_max = pll->pll_out_max;
 751         }
 752
 753         /* freq = freq / 10; */
 754         do_div(freq, 10);
 755
 756         if (pll->flags & RADEON_PLL_USE_POST_DIV) {
 757                 post_div = pll->post_div;
 758                 if ((post_div < pll->min_post_div) || (post_div > pll->max_post_div))
 759                         goto done;
 760
 761                 vco_frequency = freq * post_div;
 762                 if ((vco_frequency < pll_out_min) || (vco_frequency > pll_out_max))
 763                         goto done;
 764
 765                 if (pll->flags & RADEON_PLL_USE_REF_DIV) {
 766                         ref_div = pll->reference_div;
 767                         if ((ref_div < pll->min_ref_div) || (ref_div > pll->max_ref_div))
 768                                 goto done;
 769                         if (!calc_fb_div(pll, freq, post_div, ref_div, &fb_div, &fb_div_frac))
 770                                 goto done;
 771                 }
 772         } else {
 773                 for (post_div = pll->max_post_div; post_div >= pll->min_post_div; --post_div) {
 774                         if (pll->flags & RADEON_PLL_LEGACY) {
 775                                 if ((post_div == 5) ||
 776                                     (post_div == 7) ||
 777                                     (post_div == 9) ||
 778                                     (post_div == 10) ||
 779                                     (post_div == 11))
 780                                         continue;
 781                         }
 782
 783                         if ((pll->flags & RADEON_PLL_NO_ODD_POST_DIV) && (post_div & 1))
 784                                 continue;
 785
 786                         vco_frequency = freq * post_div;
 787                         if ((vco_frequency < pll_out_min) || (vco_frequency > pll_out_max))
 788                                 continue;
 789                         if (pll->flags & RADEON_PLL_USE_REF_DIV) {
 790                                 ref_div = pll->reference_div;
 791                                 if ((ref_div < pll->min_ref_div) || (ref_div > pll->max_ref_div))
 792                                         goto done;
 793                                 if (calc_fb_div(pll, freq, post_div, ref_div, &fb_div, &fb_div_frac))
 794                                         break;
 795                         } else {
 796                                 if (calc_fb_ref_div(pll, freq, post_div, &fb_div, &fb_div_frac, &ref_div))
 797                                         break;
 798                         }
 799                 }
 800         }
 801
 802         best_freq = pll->reference_freq * 10 * fb_div;
 803         best_freq += pll->reference_freq * fb_div_frac;
 804         best_freq = best_freq / (ref_div * post_div);
 805
 806 done:
 807         if (best_freq == 0)
 808                 DRM_ERROR("Couldn't find valid PLL dividers\n");
 809
 810         *dot_clock_p = best_freq / 10;
 811         *fb_div_p = fb_div;
 812         *frac_fb_div_p = fb_div_frac;
 813         *ref_div_p = ref_div;
 814         *post_div_p = post_div;
 815
 816         DRM_DEBUG_KMS("%u %d.%d, %d, %d\n", *dot_clock_p, *fb_div_p, *frac_fb_div_p, *ref_div_p, *post_div_p);
 817 }
 818
 819 void radeon_compute_pll(struct radeon_pll *pll,
 820                         uint64_t freq,
 821                         uint32_t *dot_clock_p,
 822                         uint32_t *fb_div_p,
 823                         uint32_t *frac_fb_div_p,
 824                         uint32_t *ref_div_p,
 825                         uint32_t *post_div_p)
 826 {
 827         switch (pll->algo) {
 828         case PLL_ALGO_NEW:
 829                 radeon_compute_pll_new(pll, freq, dot_clock_p, fb_div_p,
 830                                        frac_fb_div_p, ref_div_p, post_div_p);
 831                 break;
 832         case PLL_ALGO_LEGACY:
 833         default:
 834                 radeon_compute_pll_legacy(pll, freq, dot_clock_p, fb_div_p,
 835                                           frac_fb_div_p, ref_div_p, post_div_p);
 836                 break;
 837         }
 838 }
 839
 840 static void radeon_user_framebuffer_destroy(struct drm_framebuffer *fb)
 841 {
 842         struct radeon_framebuffer *radeon_fb = to_radeon_framebuffer(fb);
 843
 844         if (radeon_fb->obj)
 845                 drm_gem_object_unreference_unlocked(radeon_fb->obj);
 846         drm_framebuffer_cleanup(fb);
 847         kfree(radeon_fb);
 848 }
 849
 850 static int radeon_user_framebuffer_create_handle(struct drm_framebuffer *fb,
 851                                                   struct drm_file *file_priv,
 852                                                   unsigned int *handle)
 853 {
 854         struct radeon_framebuffer *radeon_fb = to_radeon_framebuffer(fb);
 855
 856         return drm_gem_handle_create(file_priv, radeon_fb->obj, handle);
 857 }
 858
 859 static const struct drm_framebuffer_funcs radeon_fb_funcs = {
 860         .destroy = radeon_user_framebuffer_destroy,
 861         .create_handle = radeon_user_framebuffer_create_handle,
 862 };
 863
 864 void
 865 radeon_framebuffer_init(struct drm_device *dev,
 866                         struct radeon_framebuffer *rfb,
 867                         struct drm_mode_fb_cmd *mode_cmd,
 868                         struct drm_gem_object *obj)
 869 {
 870         rfb->obj = obj;
 871         drm_framebuffer_init(dev, &rfb->base, &radeon_fb_funcs);
 872         drm_helper_mode_fill_fb_struct(&rfb->base, mode_cmd);
 873 }
 874
 875 static struct drm_framebuffer *
 876 radeon_user_framebuffer_create(struct drm_device *dev,
 877                                struct drm_file *file_priv,
 878                                struct drm_mode_fb_cmd *mode_cmd)
 879 {
 880         struct drm_gem_object *obj;
 881         struct radeon_framebuffer *radeon_fb;
 882
 883         obj = drm_gem_object_lookup(dev, file_priv, mode_cmd->handle);
 884         if (obj ==  NULL) {
 885                 dev_err(&dev->pdev->dev, "No GEM object associated to handle 0x%08X, "
 886                         "can't create framebuffer\n", mode_cmd->handle);
 887                 return ERR_PTR(-ENOENT);
 888         }
 889
 890         radeon_fb = kzalloc(sizeof(*radeon_fb), GFP_KERNEL);
 891         if (radeon_fb == NULL)
 892                 return ERR_PTR(-ENOMEM);
 893
 894         radeon_framebuffer_init(dev, radeon_fb, mode_cmd, obj);
 895
 896         return &radeon_fb->base;
 897 }
 898
 899 static void radeon_output_poll_changed(struct drm_device *dev)
 900 {
 901         struct radeon_device *rdev = dev->dev_private;
 902         radeon_fb_output_poll_changed(rdev);
 903 }
 904
 905 static const struct drm_mode_config_funcs radeon_mode_funcs = {
 906         .fb_create = radeon_user_framebuffer_create,
 907         .output_poll_changed = radeon_output_poll_changed
 908 };
 909
 910 struct drm_prop_enum_list {
 911         int type;
 912         char *name;
 913 };
 914
 915 static struct drm_prop_enum_list radeon_tmds_pll_enum_list[] =
 916 {       { 0, "driver" },
 917         { 1, "bios" },
 918 };
 919
 920 static struct drm_prop_enum_list radeon_tv_std_enum_list[] =
 921 {       { TV_STD_NTSC, "ntsc" },
 922         { TV_STD_PAL, "pal" },
 923         { TV_STD_PAL_M, "pal-m" },
 924         { TV_STD_PAL_60, "pal-60" },
 925         { TV_STD_NTSC_J, "ntsc-j" },
 926         { TV_STD_SCART_PAL, "scart-pal" },
 927         { TV_STD_PAL_CN, "pal-cn" },
 928         { TV_STD_SECAM, "secam" },
 929 };
 930
 931 static struct drm_prop_enum_list radeon_underscan_enum_list[] =
 932 {       { UNDERSCAN_OFF, "off" },
 933         { UNDERSCAN_ON, "on" },
 934         { UNDERSCAN_AUTO, "auto" },
 935 };
 936
 937 static int radeon_modeset_create_props(struct radeon_device *rdev)
 938 {
 939         int i, sz;
 940
 941         if (rdev->is_atom_bios) {
 942                 rdev->mode_info.coherent_mode_property =
 943                         drm_property_create(rdev->ddev,
 944                                             DRM_MODE_PROP_RANGE,
 945                                             "coherent", 2);
 946                 if (!rdev->mode_info.coherent_mode_property)
 947                         return -ENOMEM;
 948
 949                 rdev->mode_info.coherent_mode_property->values[0] = 0;
 950                 rdev->mode_info.coherent_mode_property->values[1] = 1;
 951         }
 952
 953         if (!ASIC_IS_AVIVO(rdev)) {
 954                 sz = ARRAY_SIZE(radeon_tmds_pll_enum_list);
 955                 rdev->mode_info.tmds_pll_property =
 956                         drm_property_create(rdev->ddev,
 957                                             DRM_MODE_PROP_ENUM,
 958                                             "tmds_pll", sz);
 959                 for (i = 0; i < sz; i++) {
 960                         drm_property_add_enum(rdev->mode_info.tmds_pll_property,
 961                                               i,
 962                                               radeon_tmds_pll_enum_list[i].type,
 963                                               radeon_tmds_pll_enum_list[i].name);
 964                 }
 965         }
 966
 967         rdev->mode_info.load_detect_property =
 968                 drm_property_create(rdev->ddev,
 969                                     DRM_MODE_PROP_RANGE,
 970                                     "load detection", 2);
 971         if (!rdev->mode_info.load_detect_property)
 972                 return -ENOMEM;
 973         rdev->mode_info.load_detect_property->values[0] = 0;
 974         rdev->mode_info.load_detect_property->values[1] = 1;
 975
 976         drm_mode_create_scaling_mode_property(rdev->ddev);
 977
 978         sz = ARRAY_SIZE(radeon_tv_std_enum_list);
 979         rdev->mode_info.tv_std_property =
 980                 drm_property_create(rdev->ddev,
 981                                     DRM_MODE_PROP_ENUM,
 982                                     "tv standard", sz);
 983         for (i = 0; i < sz; i++) {
 984                 drm_property_add_enum(rdev->mode_info.tv_std_property,
 985                                       i,
 986                                       radeon_tv_std_enum_list[i].type,
 987                                       radeon_tv_std_enum_list[i].name);
 988         }
 989
 990         sz = ARRAY_SIZE(radeon_underscan_enum_list);
 991         rdev->mode_info.underscan_property =
 992                 drm_property_create(rdev->ddev,
 993                                     DRM_MODE_PROP_ENUM,
 994                                     "underscan", sz);
 995         for (i = 0; i < sz; i++) {
 996                 drm_property_add_enum(rdev->mode_info.underscan_property,
 997                                       i,
 998                                       radeon_underscan_enum_list[i].type,
 999                                       radeon_underscan_enum_list[i].name);
1000         }
1001
1002         return 0;
1003 }
1004
1005 void radeon_update_display_priority(struct radeon_device *rdev)
1006 {
1007         /* adjustment options for the display watermarks */
1008         if ((radeon_disp_priority == 0) || (radeon_disp_priority > 2)) {
1009                 /* set display priority to high for r3xx, rv515 chips
1010                  * this avoids flickering due to underflow to the
1011                  * display controllers during heavy acceleration.
1012                  * Don't force high on rs4xx igp chips as it seems to
1013                  * affect the sound card.  See kernel bug 15982.
1014                  */
1015                 if ((ASIC_IS_R300(rdev) || (rdev->family == CHIP_RV515)) &&
1016                     !(rdev->flags & RADEON_IS_IGP))
1017                         rdev->disp_priority = 2;
1018                 else
1019                         rdev->disp_priority = 0;
1020         } else
1021                 rdev->disp_priority = radeon_disp_priority;
1022
1023 }
1024
1025 int radeon_modeset_init(struct radeon_device *rdev)
1026 {
1027         int i;
1028         int ret;
1029
1030         drm_mode_config_init(rdev->ddev);
1031         rdev->mode_info.mode_config_initialized = true;
1032
1033         rdev->ddev->mode_config.funcs = (void *)&radeon_mode_funcs;
1034
1035         if (ASIC_IS_AVIVO(rdev)) {
1036                 rdev->ddev->mode_config.max_width = 8192;
1037                 rdev->ddev->mode_config.max_height = 8192;
1038         } else {
1039                 rdev->ddev->mode_config.max_width = 4096;
1040                 rdev->ddev->mode_config.max_height = 4096;
1041         }
1042
1043         rdev->ddev->mode_config.fb_base = rdev->mc.aper_base;
1044
1045         ret = radeon_modeset_create_props(rdev);
1046         if (ret) {
1047                 return ret;
1048         }
1049
1050         /* init i2c buses */
1051         radeon_i2c_init(rdev);
1052
1053         /* check combios for a valid hardcoded EDID - Sun servers */
1054         if (!rdev->is_atom_bios) {
1055                 /* check for hardcoded EDID in BIOS */
1056                 radeon_combios_check_hardcoded_edid(rdev);
1057         }
1058
1059         /* allocate crtcs */
1060         for (i = 0; i < rdev->num_crtc; i++) {
1061                 radeon_crtc_init(rdev->ddev, i);
1062         }
1063
1064         /* okay we should have all the bios connectors */
1065         ret = radeon_setup_enc_conn(rdev->ddev);
1066         if (!ret) {
1067                 return ret;
1068         }
1069         /* initialize hpd */
1070         radeon_hpd_init(rdev);
1071
1072         /* Initialize power management */
1073         radeon_pm_init(rdev);
1074
1075         radeon_fbdev_init(rdev);
1076         drm_kms_helper_poll_init(rdev->ddev);
1077
1078         return 0;
1079 }
1080
1081 void radeon_modeset_fini(struct radeon_device *rdev)
1082 {
1083         radeon_fbdev_fini(rdev);
1084         kfree(rdev->mode_info.bios_hardcoded_edid);
1085         radeon_pm_fini(rdev);
1086
1087         if (rdev->mode_info.mode_config_initialized) {
1088                 drm_kms_helper_poll_fini(rdev->ddev);
1089                 radeon_hpd_fini(rdev);
1090                 drm_mode_config_cleanup(rdev->ddev);
1091                 rdev->mode_info.mode_config_initialized = false;
1092         }
1093         /* free i2c buses */
1094         radeon_i2c_fini(rdev);
1095 }
1096
1097 bool radeon_crtc_scaling_mode_fixup(struct drm_crtc *crtc,
1098                                 struct drm_display_mode *mode,
1099                                 struct drm_display_mode *adjusted_mode)
1100 {
1101         struct drm_device *dev = crtc->dev;
1102         struct radeon_device *rdev = dev->dev_private;
1103         struct drm_encoder *encoder;
1104         struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
1105         struct radeon_encoder *radeon_encoder;
1106         struct drm_connector *connector;
1107         struct radeon_connector *radeon_connector;
1108         bool first = true;
1109         u32 src_v = 1, dst_v = 1;
1110         u32 src_h = 1, dst_h = 1;
1111
1112         radeon_crtc->h_border = 0;
1113         radeon_crtc->v_border = 0;
1114
1115         list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
1116                 if (encoder->crtc != crtc)
1117                         continue;
1118                 radeon_encoder = to_radeon_encoder(encoder);
1119                 connector = radeon_get_connector_for_encoder(encoder);
1120                 radeon_connector = to_radeon_connector(connector);
1121
1122                 if (first) {
1123                         /* set scaling */
1124                         if (radeon_encoder->rmx_type == RMX_OFF)
1125                                 radeon_crtc->rmx_type = RMX_OFF;
1126                         else if (mode->hdisplay < radeon_encoder->native_mode.hdisplay ||
1127                                  mode->vdisplay < radeon_encoder->native_mode.vdisplay)
1128                                 radeon_crtc->rmx_type = radeon_encoder->rmx_type;
1129                         else
1130                                 radeon_crtc->rmx_type = RMX_OFF;
1131                         src_v = crtc->mode.vdisplay;
1132                         dst_v = radeon_crtc->native_mode.vdisplay;
1133                         src_h = crtc->mode.hdisplay;
1134                         dst_h = radeon_crtc->native_mode.vdisplay;
1135                         /* copy native mode */
1136                         memcpy(&radeon_crtc->native_mode,
1137                                &radeon_encoder->native_mode,
1138                                 sizeof(struct drm_display_mode));
1139
1140                         /* fix up for overscan on hdmi */
1141                         if (ASIC_IS_AVIVO(rdev) &&
1142                             ((radeon_encoder->underscan_type == UNDERSCAN_ON) ||
1143                              ((radeon_encoder->underscan_type == UNDERSCAN_AUTO) &&
1144                               drm_detect_hdmi_monitor(radeon_connector->edid)))) {
1145                                 radeon_crtc->h_border = (mode->hdisplay >> 5) + 16;
1146                                 radeon_crtc->v_border = (mode->vdisplay >> 5) + 16;
1147                                 radeon_crtc->rmx_type = RMX_FULL;
1148                                 src_v = crtc->mode.vdisplay;
1149                                 dst_v = crtc->mode.vdisplay - (radeon_crtc->v_border * 2);
1150                                 src_h = crtc->mode.hdisplay;
1151                                 dst_h = crtc->mode.hdisplay - (radeon_crtc->h_border * 2);
1152                         }
1153                         first = false;
1154                 } else {
1155                         if (radeon_crtc->rmx_type != radeon_encoder->rmx_type) {
1156                                 /* WARNING: Right now this can't happen but
1157                                  * in the future we need to check that scaling
1158                                  * are consistent across different encoder
1159                                  * (ie all encoder can work with the same
1160                                  *  scaling).
1161                                  */
1162                                 DRM_ERROR("Scaling not consistent across encoder.\n");
1163                                 return false;
1164                         }
1165                 }
1166         }
1167         if (radeon_crtc->rmx_type != RMX_OFF) {
1168                 fixed20_12 a, b;
1169                 a.full = dfixed_const(src_v);
1170                 b.full = dfixed_const(dst_v);
1171                 radeon_crtc->vsc.full = dfixed_div(a, b);
1172                 a.full = dfixed_const(src_h);
1173                 b.full = dfixed_const(dst_h);
1174                 radeon_crtc->hsc.full = dfixed_div(a, b);
1175         } else {
1176                 radeon_crtc->vsc.full = dfixed_const(1);
1177                 radeon_crtc->hsc.full = dfixed_const(1);
1178         }
1179         return true;
1180 }