drivers/gpu/drm/ast/ast_mode.c

   1 /*
   2  * Copyright 2012 Red Hat Inc.
   3  * Parts based on xf86-video-ast
   4  * Copyright (c) 2005 ASPEED Technology Inc.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  17  * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
  18  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  19  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  20  * USE OR OTHER DEALINGS IN THE SOFTWARE.
  21  *
  22  * The above copyright notice and this permission notice (including the
  23  * next paragraph) shall be included in all copies or substantial portions
  24  * of the Software.
  25  *
  26  */
  27 /*
  28  * Authors: Dave Airlie <airlied@redhat.com>
  29  */
  30
  31 #include <linux/export.h>
  32 #include <linux/pci.h>
  33
  34 #include <drm/drm_atomic.h>
  35 #include <drm/drm_atomic_helper.h>
  36 #include <drm/drm_atomic_state_helper.h>
  37 #include <drm/drm_crtc.h>
  38 #include <drm/drm_damage_helper.h>
  39 #include <drm/drm_edid.h>
  40 #include <drm/drm_format_helper.h>
  41 #include <drm/drm_fourcc.h>
  42 #include <drm/drm_gem_atomic_helper.h>
  43 #include <drm/drm_gem_framebuffer_helper.h>
  44 #include <drm/drm_gem_shmem_helper.h>
  45 #include <drm/drm_managed.h>
  46 #include <drm/drm_probe_helper.h>
  47 #include <drm/drm_simple_kms_helper.h>
  48
  49 #include "ast_drv.h"
  50 #include "ast_tables.h"
  51
  52 #define AST_LUT_SIZE 256
  53
  54 static inline void ast_load_palette_index(struct ast_device *ast,
  55                                      u8 index, u8 red, u8 green,
  56                                      u8 blue)
  57 {
  58         ast_io_write8(ast, AST_IO_VGADWR, index);
  59         ast_io_read8(ast, AST_IO_VGASRI);
  60         ast_io_write8(ast, AST_IO_VGAPDR, red);
  61         ast_io_read8(ast, AST_IO_VGASRI);
  62         ast_io_write8(ast, AST_IO_VGAPDR, green);
  63         ast_io_read8(ast, AST_IO_VGASRI);
  64         ast_io_write8(ast, AST_IO_VGAPDR, blue);
  65         ast_io_read8(ast, AST_IO_VGASRI);
  66 }
  67
  68 static void ast_crtc_set_gamma_linear(struct ast_device *ast,
  69                                       const struct drm_format_info *format)
  70 {
  71         int i;
  72
  73         switch (format->format) {
  74         case DRM_FORMAT_C8: /* In this case, gamma table is used as color palette */
  75         case DRM_FORMAT_RGB565:
  76         case DRM_FORMAT_XRGB8888:
  77                 for (i = 0; i < AST_LUT_SIZE; i++)
  78                         ast_load_palette_index(ast, i, i, i, i);
  79                 break;
  80         default:
  81                 drm_warn_once(&ast->base, "Unsupported format %p4cc for gamma correction\n",
  82                               &format->format);
  83                 break;
  84         }
  85 }
  86
  87 static void ast_crtc_set_gamma(struct ast_device *ast,
  88                                const struct drm_format_info *format,
  89                                struct drm_color_lut *lut)
  90 {
  91         int i;
  92
  93         switch (format->format) {
  94         case DRM_FORMAT_C8: /* In this case, gamma table is used as color palette */
  95         case DRM_FORMAT_RGB565:
  96         case DRM_FORMAT_XRGB8888:
  97                 for (i = 0; i < AST_LUT_SIZE; i++)
  98                         ast_load_palette_index(ast, i,
  99                                                lut[i].red >> 8,
 100                                                lut[i].green >> 8,
 101                                                lut[i].blue >> 8);
 102                 break;
 103         default:
 104                 drm_warn_once(&ast->base, "Unsupported format %p4cc for gamma correction\n",
 105                               &format->format);
 106                 break;
 107         }
 108 }
 109
 110 static bool ast_get_vbios_mode_info(const struct drm_format_info *format,
 111                                     const struct drm_display_mode *mode,
 112                                     struct drm_display_mode *adjusted_mode,
 113                                     struct ast_vbios_mode_info *vbios_mode)
 114 {
 115         u32 refresh_rate_index = 0, refresh_rate;
 116         const struct ast_vbios_enhtable *best = NULL;
 117         u32 hborder, vborder;
 118         bool check_sync;
 119
 120         switch (format->cpp[0] * 8) {
 121         case 8:
 122                 vbios_mode->std_table = &vbios_stdtable[VGAModeIndex];
 123                 break;
 124         case 16:
 125                 vbios_mode->std_table = &vbios_stdtable[HiCModeIndex];
 126                 break;
 127         case 24:
 128         case 32:
 129                 vbios_mode->std_table = &vbios_stdtable[TrueCModeIndex];
 130                 break;
 131         default:
 132                 return false;
 133         }
 134
 135         switch (mode->crtc_hdisplay) {
 136         case 640:
 137                 vbios_mode->enh_table = &res_640x480[refresh_rate_index];
 138                 break;
 139         case 800:
 140                 vbios_mode->enh_table = &res_800x600[refresh_rate_index];
 141                 break;
 142         case 1024:
 143                 vbios_mode->enh_table = &res_1024x768[refresh_rate_index];
 144                 break;
 145         case 1152:
 146                 vbios_mode->enh_table = &res_1152x864[refresh_rate_index];
 147                 break;
 148         case 1280:
 149                 if (mode->crtc_vdisplay == 800)
 150                         vbios_mode->enh_table = &res_1280x800[refresh_rate_index];
 151                 else
 152                         vbios_mode->enh_table = &res_1280x1024[refresh_rate_index];
 153                 break;
 154         case 1360:
 155                 vbios_mode->enh_table = &res_1360x768[refresh_rate_index];
 156                 break;
 157         case 1440:
 158                 vbios_mode->enh_table = &res_1440x900[refresh_rate_index];
 159                 break;
 160         case 1600:
 161                 if (mode->crtc_vdisplay == 900)
 162                         vbios_mode->enh_table = &res_1600x900[refresh_rate_index];
 163                 else
 164                         vbios_mode->enh_table = &res_1600x1200[refresh_rate_index];
 165                 break;
 166         case 1680:
 167                 vbios_mode->enh_table = &res_1680x1050[refresh_rate_index];
 168                 break;
 169         case 1920:
 170                 if (mode->crtc_vdisplay == 1080)
 171                         vbios_mode->enh_table = &res_1920x1080[refresh_rate_index];
 172                 else
 173                         vbios_mode->enh_table = &res_1920x1200[refresh_rate_index];
 174                 break;
 175         default:
 176                 return false;
 177         }
 178
 179         refresh_rate = drm_mode_vrefresh(mode);
 180         check_sync = vbios_mode->enh_table->flags & WideScreenMode;
 181
 182         while (1) {
 183                 const struct ast_vbios_enhtable *loop = vbios_mode->enh_table;
 184
 185                 while (loop->refresh_rate != 0xff) {
 186                         if ((check_sync) &&
 187                             (((mode->flags & DRM_MODE_FLAG_NVSYNC)  &&
 188                               (loop->flags & PVSync))  ||
 189                              ((mode->flags & DRM_MODE_FLAG_PVSYNC)  &&
 190                               (loop->flags & NVSync))  ||
 191                              ((mode->flags & DRM_MODE_FLAG_NHSYNC)  &&
 192                               (loop->flags & PHSync))  ||
 193                              ((mode->flags & DRM_MODE_FLAG_PHSYNC)  &&
 194                               (loop->flags & NHSync)))) {
 195                                 loop++;
 196                                 continue;
 197                         }
 198                         if (loop->refresh_rate <= refresh_rate
 199                             && (!best || loop->refresh_rate > best->refresh_rate))
 200                                 best = loop;
 201                         loop++;
 202                 }
 203                 if (best || !check_sync)
 204                         break;
 205                 check_sync = 0;
 206         }
 207
 208         if (best)
 209                 vbios_mode->enh_table = best;
 210
 211         hborder = (vbios_mode->enh_table->flags & HBorder) ? 8 : 0;
 212         vborder = (vbios_mode->enh_table->flags & VBorder) ? 8 : 0;
 213
 214         adjusted_mode->crtc_htotal = vbios_mode->enh_table->ht;
 215         adjusted_mode->crtc_hblank_start = vbios_mode->enh_table->hde + hborder;
 216         adjusted_mode->crtc_hblank_end = vbios_mode->enh_table->ht - hborder;
 217         adjusted_mode->crtc_hsync_start = vbios_mode->enh_table->hde + hborder +
 218                 vbios_mode->enh_table->hfp;
 219         adjusted_mode->crtc_hsync_end = (vbios_mode->enh_table->hde + hborder +
 220                                          vbios_mode->enh_table->hfp +
 221                                          vbios_mode->enh_table->hsync);
 222
 223         adjusted_mode->crtc_vtotal = vbios_mode->enh_table->vt;
 224         adjusted_mode->crtc_vblank_start = vbios_mode->enh_table->vde + vborder;
 225         adjusted_mode->crtc_vblank_end = vbios_mode->enh_table->vt - vborder;
 226         adjusted_mode->crtc_vsync_start = vbios_mode->enh_table->vde + vborder +
 227                 vbios_mode->enh_table->vfp;
 228         adjusted_mode->crtc_vsync_end = (vbios_mode->enh_table->vde + vborder +
 229                                          vbios_mode->enh_table->vfp +
 230                                          vbios_mode->enh_table->vsync);
 231
 232         return true;
 233 }
 234
 235 static void ast_set_vbios_color_reg(struct ast_device *ast,
 236                                     const struct drm_format_info *format,
 237                                     const struct ast_vbios_mode_info *vbios_mode)
 238 {
 239         u32 color_index;
 240
 241         switch (format->cpp[0]) {
 242         case 1:
 243                 color_index = VGAModeIndex - 1;
 244                 break;
 245         case 2:
 246                 color_index = HiCModeIndex;
 247                 break;
 248         case 3:
 249         case 4:
 250                 color_index = TrueCModeIndex;
 251                 break;
 252         default:
 253                 return;
 254         }
 255
 256         ast_set_index_reg(ast, AST_IO_VGACRI, 0x8c, (u8)((color_index & 0x0f) << 4));
 257
 258         ast_set_index_reg(ast, AST_IO_VGACRI, 0x91, 0x00);
 259
 260         if (vbios_mode->enh_table->flags & NewModeInfo) {
 261                 ast_set_index_reg(ast, AST_IO_VGACRI, 0x91, 0xa8);
 262                 ast_set_index_reg(ast, AST_IO_VGACRI, 0x92, format->cpp[0] * 8);
 263         }
 264 }
 265
 266 static void ast_set_vbios_mode_reg(struct ast_device *ast,
 267                                    const struct drm_display_mode *adjusted_mode,
 268                                    const struct ast_vbios_mode_info *vbios_mode)
 269 {
 270         u32 refresh_rate_index, mode_id;
 271
 272         refresh_rate_index = vbios_mode->enh_table->refresh_rate_index;
 273         mode_id = vbios_mode->enh_table->mode_id;
 274
 275         ast_set_index_reg(ast, AST_IO_VGACRI, 0x8d, refresh_rate_index & 0xff);
 276         ast_set_index_reg(ast, AST_IO_VGACRI, 0x8e, mode_id & 0xff);
 277
 278         ast_set_index_reg(ast, AST_IO_VGACRI, 0x91, 0x00);
 279
 280         if (vbios_mode->enh_table->flags & NewModeInfo) {
 281                 ast_set_index_reg(ast, AST_IO_VGACRI, 0x91, 0xa8);
 282                 ast_set_index_reg(ast, AST_IO_VGACRI, 0x93, adjusted_mode->clock / 1000);
 283                 ast_set_index_reg(ast, AST_IO_VGACRI, 0x94, adjusted_mode->crtc_hdisplay);
 284                 ast_set_index_reg(ast, AST_IO_VGACRI, 0x95, adjusted_mode->crtc_hdisplay >> 8);
 285                 ast_set_index_reg(ast, AST_IO_VGACRI, 0x96, adjusted_mode->crtc_vdisplay);
 286                 ast_set_index_reg(ast, AST_IO_VGACRI, 0x97, adjusted_mode->crtc_vdisplay >> 8);
 287         }
 288 }
 289
 290 static void ast_set_std_reg(struct ast_device *ast,
 291                             struct drm_display_mode *mode,
 292                             struct ast_vbios_mode_info *vbios_mode)
 293 {
 294         const struct ast_vbios_stdtable *stdtable;
 295         u32 i;
 296         u8 jreg;
 297
 298         stdtable = vbios_mode->std_table;
 299
 300         jreg = stdtable->misc;
 301         ast_io_write8(ast, AST_IO_VGAMR_W, jreg);
 302
 303         /* Set SEQ; except Screen Disable field */
 304         ast_set_index_reg(ast, AST_IO_VGASRI, 0x00, 0x03);
 305         ast_set_index_reg_mask(ast, AST_IO_VGASRI, 0x01, 0xdf, stdtable->seq[0]);
 306         for (i = 1; i < 4; i++) {
 307                 jreg = stdtable->seq[i];
 308                 ast_set_index_reg(ast, AST_IO_VGASRI, (i + 1), jreg);
 309         }
 310
 311         /* Set CRTC; except base address and offset */
 312         ast_set_index_reg_mask(ast, AST_IO_VGACRI, 0x11, 0x7f, 0x00);
 313         for (i = 0; i < 12; i++)
 314                 ast_set_index_reg(ast, AST_IO_VGACRI, i, stdtable->crtc[i]);
 315         for (i = 14; i < 19; i++)
 316                 ast_set_index_reg(ast, AST_IO_VGACRI, i, stdtable->crtc[i]);
 317         for (i = 20; i < 25; i++)
 318                 ast_set_index_reg(ast, AST_IO_VGACRI, i, stdtable->crtc[i]);
 319
 320         /* set AR */
 321         jreg = ast_io_read8(ast, AST_IO_VGAIR1_R);
 322         for (i = 0; i < 20; i++) {
 323                 jreg = stdtable->ar[i];
 324                 ast_io_write8(ast, AST_IO_VGAARI_W, (u8)i);
 325                 ast_io_write8(ast, AST_IO_VGAARI_W, jreg);
 326         }
 327         ast_io_write8(ast, AST_IO_VGAARI_W, 0x14);
 328         ast_io_write8(ast, AST_IO_VGAARI_W, 0x00);
 329
 330         jreg = ast_io_read8(ast, AST_IO_VGAIR1_R);
 331         ast_io_write8(ast, AST_IO_VGAARI_W, 0x20);
 332
 333         /* Set GR */
 334         for (i = 0; i < 9; i++)
 335                 ast_set_index_reg(ast, AST_IO_VGAGRI, i, stdtable->gr[i]);
 336 }
 337
 338 static void ast_set_crtc_reg(struct ast_device *ast,
 339                              struct drm_display_mode *mode,
 340                              struct ast_vbios_mode_info *vbios_mode)
 341 {
 342         u8 jreg05 = 0, jreg07 = 0, jreg09 = 0, jregAC = 0, jregAD = 0, jregAE = 0;
 343         u16 temp, precache = 0;
 344
 345         if ((IS_AST_GEN6(ast) || IS_AST_GEN7(ast)) &&
 346             (vbios_mode->enh_table->flags & AST2500PreCatchCRT))
 347                 precache = 40;
 348
 349         ast_set_index_reg_mask(ast, AST_IO_VGACRI, 0x11, 0x7f, 0x00);
 350
 351         temp = (mode->crtc_htotal >> 3) - 5;
 352         if (temp & 0x100)
 353                 jregAC |= 0x01; /* HT D[8] */
 354         ast_set_index_reg_mask(ast, AST_IO_VGACRI, 0x00, 0x00, temp);
 355
 356         temp = (mode->crtc_hdisplay >> 3) - 1;
 357         if (temp & 0x100)
 358                 jregAC |= 0x04; /* HDE D[8] */
 359         ast_set_index_reg_mask(ast, AST_IO_VGACRI, 0x01, 0x00, temp);
 360
 361         temp = (mode->crtc_hblank_start >> 3) - 1;
 362         if (temp & 0x100)
 363                 jregAC |= 0x10; /* HBS D[8] */
 364         ast_set_index_reg_mask(ast, AST_IO_VGACRI, 0x02, 0x00, temp);
 365
 366         temp = ((mode->crtc_hblank_end >> 3) - 1) & 0x7f;
 367         if (temp & 0x20)
 368                 jreg05 |= 0x80;  /* HBE D[5] */
 369         if (temp & 0x40)
 370                 jregAD |= 0x01;  /* HBE D[5] */
 371         ast_set_index_reg_mask(ast, AST_IO_VGACRI, 0x03, 0xE0, (temp & 0x1f));
 372
 373         temp = ((mode->crtc_hsync_start-precache) >> 3) - 1;
 374         if (temp & 0x100)
 375                 jregAC |= 0x40; /* HRS D[5] */
 376         ast_set_index_reg_mask(ast, AST_IO_VGACRI, 0x04, 0x00, temp);
 377
 378         temp = (((mode->crtc_hsync_end-precache) >> 3) - 1) & 0x3f;
 379         if (temp & 0x20)
 380                 jregAD |= 0x04; /* HRE D[5] */
 381         ast_set_index_reg_mask(ast, AST_IO_VGACRI, 0x05, 0x60, (u8)((temp & 0x1f) | jreg05));
 382
 383         ast_set_index_reg_mask(ast, AST_IO_VGACRI, 0xAC, 0x00, jregAC);
 384         ast_set_index_reg_mask(ast, AST_IO_VGACRI, 0xAD, 0x00, jregAD);
 385
 386         // Workaround for HSync Time non octave pixels (1920x1080@60Hz HSync 44 pixels);
 387         if (IS_AST_GEN7(ast) && (mode->crtc_vdisplay == 1080))
 388                 ast_set_index_reg_mask(ast, AST_IO_VGACRI, 0xFC, 0xFD, 0x02);
 389         else
 390                 ast_set_index_reg_mask(ast, AST_IO_VGACRI, 0xFC, 0xFD, 0x00);
 391
 392         /* vert timings */
 393         temp = (mode->crtc_vtotal) - 2;
 394         if (temp & 0x100)
 395                 jreg07 |= 0x01;
 396         if (temp & 0x200)
 397                 jreg07 |= 0x20;
 398         if (temp & 0x400)
 399                 jregAE |= 0x01;
 400         ast_set_index_reg_mask(ast, AST_IO_VGACRI, 0x06, 0x00, temp);
 401
 402         temp = (mode->crtc_vsync_start) - 1;
 403         if (temp & 0x100)
 404                 jreg07 |= 0x04;
 405         if (temp & 0x200)
 406                 jreg07 |= 0x80;
 407         if (temp & 0x400)
 408                 jregAE |= 0x08;
 409         ast_set_index_reg_mask(ast, AST_IO_VGACRI, 0x10, 0x00, temp);
 410
 411         temp = (mode->crtc_vsync_end - 1) & 0x3f;
 412         if (temp & 0x10)
 413                 jregAE |= 0x20;
 414         if (temp & 0x20)
 415                 jregAE |= 0x40;
 416         ast_set_index_reg_mask(ast, AST_IO_VGACRI, 0x11, 0x70, temp & 0xf);
 417
 418         temp = mode->crtc_vdisplay - 1;
 419         if (temp & 0x100)
 420                 jreg07 |= 0x02;
 421         if (temp & 0x200)
 422                 jreg07 |= 0x40;
 423         if (temp & 0x400)
 424                 jregAE |= 0x02;
 425         ast_set_index_reg_mask(ast, AST_IO_VGACRI, 0x12, 0x00, temp);
 426
 427         temp = mode->crtc_vblank_start - 1;
 428         if (temp & 0x100)
 429                 jreg07 |= 0x08;
 430         if (temp & 0x200)
 431                 jreg09 |= 0x20;
 432         if (temp & 0x400)
 433                 jregAE |= 0x04;
 434         ast_set_index_reg_mask(ast, AST_IO_VGACRI, 0x15, 0x00, temp);
 435
 436         temp = mode->crtc_vblank_end - 1;
 437         if (temp & 0x100)
 438                 jregAE |= 0x10;
 439         ast_set_index_reg_mask(ast, AST_IO_VGACRI, 0x16, 0x00, temp);
 440
 441         ast_set_index_reg_mask(ast, AST_IO_VGACRI, 0x07, 0x00, jreg07);
 442         ast_set_index_reg_mask(ast, AST_IO_VGACRI, 0x09, 0xdf, jreg09);
 443         ast_set_index_reg_mask(ast, AST_IO_VGACRI, 0xAE, 0x00, (jregAE | 0x80));
 444
 445         if (precache)
 446                 ast_set_index_reg_mask(ast, AST_IO_VGACRI, 0xb6, 0x3f, 0x80);
 447         else
 448                 ast_set_index_reg_mask(ast, AST_IO_VGACRI, 0xb6, 0x3f, 0x00);
 449
 450         ast_set_index_reg_mask(ast, AST_IO_VGACRI, 0x11, 0x7f, 0x80);
 451 }
 452
 453 static void ast_set_offset_reg(struct ast_device *ast,
 454                                struct drm_framebuffer *fb)
 455 {
 456         u16 offset;
 457
 458         offset = fb->pitches[0] >> 3;
 459         ast_set_index_reg(ast, AST_IO_VGACRI, 0x13, (offset & 0xff));
 460         ast_set_index_reg(ast, AST_IO_VGACRI, 0xb0, (offset >> 8) & 0x3f);
 461 }
 462
 463 static void ast_set_dclk_reg(struct ast_device *ast,
 464                              struct drm_display_mode *mode,
 465                              struct ast_vbios_mode_info *vbios_mode)
 466 {
 467         const struct ast_vbios_dclk_info *clk_info;
 468
 469         if (IS_AST_GEN6(ast) || IS_AST_GEN7(ast))
 470                 clk_info = &dclk_table_ast2500[vbios_mode->enh_table->dclk_index];
 471         else
 472                 clk_info = &dclk_table[vbios_mode->enh_table->dclk_index];
 473
 474         ast_set_index_reg_mask(ast, AST_IO_VGACRI, 0xc0, 0x00, clk_info->param1);
 475         ast_set_index_reg_mask(ast, AST_IO_VGACRI, 0xc1, 0x00, clk_info->param2);
 476         ast_set_index_reg_mask(ast, AST_IO_VGACRI, 0xbb, 0x0f,
 477                                (clk_info->param3 & 0xc0) |
 478                                ((clk_info->param3 & 0x3) << 4));
 479 }
 480
 481 static void ast_set_color_reg(struct ast_device *ast,
 482                               const struct drm_format_info *format)
 483 {
 484         u8 jregA0 = 0, jregA3 = 0, jregA8 = 0;
 485
 486         switch (format->cpp[0] * 8) {
 487         case 8:
 488                 jregA0 = 0x70;
 489                 jregA3 = 0x01;
 490                 jregA8 = 0x00;
 491                 break;
 492         case 15:
 493         case 16:
 494                 jregA0 = 0x70;
 495                 jregA3 = 0x04;
 496                 jregA8 = 0x02;
 497                 break;
 498         case 32:
 499                 jregA0 = 0x70;
 500                 jregA3 = 0x08;
 501                 jregA8 = 0x02;
 502                 break;
 503         }
 504
 505         ast_set_index_reg_mask(ast, AST_IO_VGACRI, 0xa0, 0x8f, jregA0);
 506         ast_set_index_reg_mask(ast, AST_IO_VGACRI, 0xa3, 0xf0, jregA3);
 507         ast_set_index_reg_mask(ast, AST_IO_VGACRI, 0xa8, 0xfd, jregA8);
 508 }
 509
 510 static void ast_set_crtthd_reg(struct ast_device *ast)
 511 {
 512         /* Set Threshold */
 513         if (IS_AST_GEN7(ast)) {
 514                 ast_set_index_reg(ast, AST_IO_VGACRI, 0xa7, 0xe0);
 515                 ast_set_index_reg(ast, AST_IO_VGACRI, 0xa6, 0xa0);
 516         } else if (IS_AST_GEN6(ast) || IS_AST_GEN5(ast) || IS_AST_GEN4(ast)) {
 517                 ast_set_index_reg(ast, AST_IO_VGACRI, 0xa7, 0x78);
 518                 ast_set_index_reg(ast, AST_IO_VGACRI, 0xa6, 0x60);
 519         } else if (IS_AST_GEN3(ast) || IS_AST_GEN2(ast)) {
 520                 ast_set_index_reg(ast, AST_IO_VGACRI, 0xa7, 0x3f);
 521                 ast_set_index_reg(ast, AST_IO_VGACRI, 0xa6, 0x2f);
 522         } else {
 523                 ast_set_index_reg(ast, AST_IO_VGACRI, 0xa7, 0x2f);
 524                 ast_set_index_reg(ast, AST_IO_VGACRI, 0xa6, 0x1f);
 525         }
 526 }
 527
 528 static void ast_set_sync_reg(struct ast_device *ast,
 529                              struct drm_display_mode *mode,
 530                              struct ast_vbios_mode_info *vbios_mode)
 531 {
 532         u8 jreg;
 533
 534         jreg  = ast_io_read8(ast, AST_IO_VGAMR_R);
 535         jreg &= ~0xC0;
 536         if (vbios_mode->enh_table->flags & NVSync)
 537                 jreg |= 0x80;
 538         if (vbios_mode->enh_table->flags & NHSync)
 539                 jreg |= 0x40;
 540         ast_io_write8(ast, AST_IO_VGAMR_W, jreg);
 541 }
 542
 543 static void ast_set_start_address_crt1(struct ast_device *ast,
 544                                        unsigned int offset)
 545 {
 546         u32 addr;
 547
 548         addr = offset >> 2;
 549         ast_set_index_reg(ast, AST_IO_VGACRI, 0x0d, (u8)(addr & 0xff));
 550         ast_set_index_reg(ast, AST_IO_VGACRI, 0x0c, (u8)((addr >> 8) & 0xff));
 551         ast_set_index_reg(ast, AST_IO_VGACRI, 0xaf, (u8)((addr >> 16) & 0xff));
 552
 553 }
 554
 555 static void ast_wait_for_vretrace(struct ast_device *ast)
 556 {
 557         unsigned long timeout = jiffies + HZ;
 558         u8 vgair1;
 559
 560         do {
 561                 vgair1 = ast_io_read8(ast, AST_IO_VGAIR1_R);
 562         } while (!(vgair1 & AST_IO_VGAIR1_VREFRESH) && time_before(jiffies, timeout));
 563 }
 564
 565 /*
 566  * Planes
 567  */
 568
 569 static int ast_plane_init(struct drm_device *dev, struct ast_plane *ast_plane,
 570                           void __iomem *vaddr, u64 offset, unsigned long size,
 571                           uint32_t possible_crtcs,
 572                           const struct drm_plane_funcs *funcs,
 573                           const uint32_t *formats, unsigned int format_count,
 574                           const uint64_t *format_modifiers,
 575                           enum drm_plane_type type)
 576 {
 577         struct drm_plane *plane = &ast_plane->base;
 578
 579         ast_plane->vaddr = vaddr;
 580         ast_plane->offset = offset;
 581         ast_plane->size = size;
 582
 583         return drm_universal_plane_init(dev, plane, possible_crtcs, funcs,
 584                                         formats, format_count, format_modifiers,
 585                                         type, NULL);
 586 }
 587
 588 /*
 589  * Primary plane
 590  */
 591
 592 static const uint32_t ast_primary_plane_formats[] = {
 593         DRM_FORMAT_XRGB8888,
 594         DRM_FORMAT_RGB565,
 595         DRM_FORMAT_C8,
 596 };
 597
 598 static int ast_primary_plane_helper_atomic_check(struct drm_plane *plane,
 599                                                  struct drm_atomic_state *state)
 600 {
 601         struct drm_device *dev = plane->dev;
 602         struct drm_plane_state *new_plane_state = drm_atomic_get_new_plane_state(state, plane);
 603         struct drm_crtc_state *new_crtc_state = NULL;
 604         struct ast_crtc_state *new_ast_crtc_state;
 605         int ret;
 606
 607         if (new_plane_state->crtc)
 608                 new_crtc_state = drm_atomic_get_new_crtc_state(state, new_plane_state->crtc);
 609
 610         ret = drm_atomic_helper_check_plane_state(new_plane_state, new_crtc_state,
 611                                                   DRM_PLANE_NO_SCALING,
 612                                                   DRM_PLANE_NO_SCALING,
 613                                                   false, true);
 614         if (ret) {
 615                 return ret;
 616         } else if (!new_plane_state->visible) {
 617                 if (drm_WARN_ON(dev, new_plane_state->crtc)) /* cannot legally happen */
 618                         return -EINVAL;
 619                 else
 620                         return 0;
 621         }
 622
 623         new_ast_crtc_state = to_ast_crtc_state(new_crtc_state);
 624
 625         new_ast_crtc_state->format = new_plane_state->fb->format;
 626
 627         return 0;
 628 }
 629
 630 static void ast_handle_damage(struct ast_plane *ast_plane, struct iosys_map *src,
 631                               struct drm_framebuffer *fb,
 632                               const struct drm_rect *clip)
 633 {
 634         struct iosys_map dst = IOSYS_MAP_INIT_VADDR_IOMEM(ast_plane->vaddr);
 635
 636         iosys_map_incr(&dst, drm_fb_clip_offset(fb->pitches[0], fb->format, clip));
 637         drm_fb_memcpy(&dst, fb->pitches, src, fb, clip);
 638 }
 639
 640 static void ast_primary_plane_helper_atomic_update(struct drm_plane *plane,
 641                                                    struct drm_atomic_state *state)
 642 {
 643         struct drm_device *dev = plane->dev;
 644         struct ast_device *ast = to_ast_device(dev);
 645         struct drm_plane_state *plane_state = drm_atomic_get_new_plane_state(state, plane);
 646         struct drm_shadow_plane_state *shadow_plane_state = to_drm_shadow_plane_state(plane_state);
 647         struct drm_framebuffer *fb = plane_state->fb;
 648         struct drm_plane_state *old_plane_state = drm_atomic_get_old_plane_state(state, plane);
 649         struct drm_framebuffer *old_fb = old_plane_state->fb;
 650         struct ast_plane *ast_plane = to_ast_plane(plane);
 651         struct drm_rect damage;
 652         struct drm_atomic_helper_damage_iter iter;
 653
 654         if (!old_fb || (fb->format != old_fb->format)) {
 655                 struct drm_crtc *crtc = plane_state->crtc;
 656                 struct drm_crtc_state *crtc_state = drm_atomic_get_new_crtc_state(state, crtc);
 657                 struct ast_crtc_state *ast_crtc_state = to_ast_crtc_state(crtc_state);
 658                 struct ast_vbios_mode_info *vbios_mode_info = &ast_crtc_state->vbios_mode_info;
 659
 660                 ast_set_color_reg(ast, fb->format);
 661                 ast_set_vbios_color_reg(ast, fb->format, vbios_mode_info);
 662         }
 663
 664         drm_atomic_helper_damage_iter_init(&iter, old_plane_state, plane_state);
 665         drm_atomic_for_each_plane_damage(&iter, &damage) {
 666                 ast_handle_damage(ast_plane, shadow_plane_state->data, fb, &damage);
 667         }
 668
 669         /*
 670          * Some BMCs stop scanning out the video signal after the driver
 671          * reprogrammed the offset. This stalls display output for several
 672          * seconds and makes the display unusable. Therefore only update
 673          * the offset if it changes.
 674          */
 675         if (!old_fb || old_fb->pitches[0] != fb->pitches[0])
 676                 ast_set_offset_reg(ast, fb);
 677 }
 678
 679 static void ast_primary_plane_helper_atomic_enable(struct drm_plane *plane,
 680                                                    struct drm_atomic_state *state)
 681 {
 682         struct ast_device *ast = to_ast_device(plane->dev);
 683         struct ast_plane *ast_plane = to_ast_plane(plane);
 684
 685         /*
 686          * Some BMCs stop scanning out the video signal after the driver
 687          * reprogrammed the scanout address. This stalls display
 688          * output for several seconds and makes the display unusable.
 689          * Therefore only reprogram the address after enabling the plane.
 690          */
 691         ast_set_start_address_crt1(ast, (u32)ast_plane->offset);
 692         ast_set_index_reg_mask(ast, AST_IO_VGASRI, 0x1, 0xdf, 0x00);
 693 }
 694
 695 static void ast_primary_plane_helper_atomic_disable(struct drm_plane *plane,
 696                                                     struct drm_atomic_state *state)
 697 {
 698         struct ast_device *ast = to_ast_device(plane->dev);
 699
 700         ast_set_index_reg_mask(ast, AST_IO_VGASRI, 0x1, 0xdf, 0x20);
 701 }
 702
 703 static const struct drm_plane_helper_funcs ast_primary_plane_helper_funcs = {
 704         DRM_GEM_SHADOW_PLANE_HELPER_FUNCS,
 705         .atomic_check = ast_primary_plane_helper_atomic_check,
 706         .atomic_update = ast_primary_plane_helper_atomic_update,
 707         .atomic_enable = ast_primary_plane_helper_atomic_enable,
 708         .atomic_disable = ast_primary_plane_helper_atomic_disable,
 709 };
 710
 711 static const struct drm_plane_funcs ast_primary_plane_funcs = {
 712         .update_plane = drm_atomic_helper_update_plane,
 713         .disable_plane = drm_atomic_helper_disable_plane,
 714         .destroy = drm_plane_cleanup,
 715         DRM_GEM_SHADOW_PLANE_FUNCS,
 716 };
 717
 718 static int ast_primary_plane_init(struct ast_device *ast)
 719 {
 720         struct drm_device *dev = &ast->base;
 721         struct ast_plane *ast_primary_plane = &ast->primary_plane;
 722         struct drm_plane *primary_plane = &ast_primary_plane->base;
 723         void __iomem *vaddr = ast->vram;
 724         u64 offset = 0; /* with shmem, the primary plane is always at offset 0 */
 725         unsigned long cursor_size = roundup(AST_HWC_SIZE + AST_HWC_SIGNATURE_SIZE, PAGE_SIZE);
 726         unsigned long size = ast->vram_fb_available - cursor_size;
 727         int ret;
 728
 729         ret = ast_plane_init(dev, ast_primary_plane, vaddr, offset, size,
 730                              0x01, &ast_primary_plane_funcs,
 731                              ast_primary_plane_formats, ARRAY_SIZE(ast_primary_plane_formats),
 732                              NULL, DRM_PLANE_TYPE_PRIMARY);
 733         if (ret) {
 734                 drm_err(dev, "ast_plane_init() failed: %d\n", ret);
 735                 return ret;
 736         }
 737         drm_plane_helper_add(primary_plane, &ast_primary_plane_helper_funcs);
 738         drm_plane_enable_fb_damage_clips(primary_plane);
 739
 740         return 0;
 741 }
 742
 743 /*
 744  * Cursor plane
 745  */
 746
 747 static void ast_update_cursor_image(u8 __iomem *dst, const u8 *src, int width, int height)
 748 {
 749         union {
 750                 u32 ul;
 751                 u8 b[4];
 752         } srcdata32[2], data32;
 753         union {
 754                 u16 us;
 755                 u8 b[2];
 756         } data16;
 757         u32 csum = 0;
 758         s32 alpha_dst_delta, last_alpha_dst_delta;
 759         u8 __iomem *dstxor;
 760         const u8 *srcxor;
 761         int i, j;
 762         u32 per_pixel_copy, two_pixel_copy;
 763
 764         alpha_dst_delta = AST_MAX_HWC_WIDTH << 1;
 765         last_alpha_dst_delta = alpha_dst_delta - (width << 1);
 766
 767         srcxor = src;
 768         dstxor = (u8 *)dst + last_alpha_dst_delta + (AST_MAX_HWC_HEIGHT - height) * alpha_dst_delta;
 769         per_pixel_copy = width & 1;
 770         two_pixel_copy = width >> 1;
 771
 772         for (j = 0; j < height; j++) {
 773                 for (i = 0; i < two_pixel_copy; i++) {
 774                         srcdata32[0].ul = *((u32 *)srcxor) & 0xf0f0f0f0;
 775                         srcdata32[1].ul = *((u32 *)(srcxor + 4)) & 0xf0f0f0f0;
 776                         data32.b[0] = srcdata32[0].b[1] | (srcdata32[0].b[0] >> 4);
 777                         data32.b[1] = srcdata32[0].b[3] | (srcdata32[0].b[2] >> 4);
 778                         data32.b[2] = srcdata32[1].b[1] | (srcdata32[1].b[0] >> 4);
 779                         data32.b[3] = srcdata32[1].b[3] | (srcdata32[1].b[2] >> 4);
 780
 781                         writel(data32.ul, dstxor);
 782                         csum += data32.ul;
 783
 784                         dstxor += 4;
 785                         srcxor += 8;
 786
 787                 }
 788
 789                 for (i = 0; i < per_pixel_copy; i++) {
 790                         srcdata32[0].ul = *((u32 *)srcxor) & 0xf0f0f0f0;
 791                         data16.b[0] = srcdata32[0].b[1] | (srcdata32[0].b[0] >> 4);
 792                         data16.b[1] = srcdata32[0].b[3] | (srcdata32[0].b[2] >> 4);
 793                         writew(data16.us, dstxor);
 794                         csum += (u32)data16.us;
 795
 796                         dstxor += 2;
 797                         srcxor += 4;
 798                 }
 799                 dstxor += last_alpha_dst_delta;
 800         }
 801
 802         /* write checksum + signature */
 803         dst += AST_HWC_SIZE;
 804         writel(csum, dst);
 805         writel(width, dst + AST_HWC_SIGNATURE_SizeX);
 806         writel(height, dst + AST_HWC_SIGNATURE_SizeY);
 807         writel(0, dst + AST_HWC_SIGNATURE_HOTSPOTX);
 808         writel(0, dst + AST_HWC_SIGNATURE_HOTSPOTY);
 809 }
 810
 811 static void ast_set_cursor_base(struct ast_device *ast, u64 address)
 812 {
 813         u8 addr0 = (address >> 3) & 0xff;
 814         u8 addr1 = (address >> 11) & 0xff;
 815         u8 addr2 = (address >> 19) & 0xff;
 816
 817         ast_set_index_reg(ast, AST_IO_VGACRI, 0xc8, addr0);
 818         ast_set_index_reg(ast, AST_IO_VGACRI, 0xc9, addr1);
 819         ast_set_index_reg(ast, AST_IO_VGACRI, 0xca, addr2);
 820 }
 821
 822 static void ast_set_cursor_location(struct ast_device *ast, u16 x, u16 y,
 823                                     u8 x_offset, u8 y_offset)
 824 {
 825         u8 x0 = (x & 0x00ff);
 826         u8 x1 = (x & 0x0f00) >> 8;
 827         u8 y0 = (y & 0x00ff);
 828         u8 y1 = (y & 0x0700) >> 8;
 829
 830         ast_set_index_reg(ast, AST_IO_VGACRI, 0xc2, x_offset);
 831         ast_set_index_reg(ast, AST_IO_VGACRI, 0xc3, y_offset);
 832         ast_set_index_reg(ast, AST_IO_VGACRI, 0xc4, x0);
 833         ast_set_index_reg(ast, AST_IO_VGACRI, 0xc5, x1);
 834         ast_set_index_reg(ast, AST_IO_VGACRI, 0xc6, y0);
 835         ast_set_index_reg(ast, AST_IO_VGACRI, 0xc7, y1);
 836 }
 837
 838 static void ast_set_cursor_enabled(struct ast_device *ast, bool enabled)
 839 {
 840         static const u8 mask = (u8)~(AST_IO_VGACRCB_HWC_16BPP |
 841                                      AST_IO_VGACRCB_HWC_ENABLED);
 842
 843         u8 vgacrcb = AST_IO_VGACRCB_HWC_16BPP;
 844
 845         if (enabled)
 846                 vgacrcb |= AST_IO_VGACRCB_HWC_ENABLED;
 847
 848         ast_set_index_reg_mask(ast, AST_IO_VGACRI, 0xcb, mask, vgacrcb);
 849 }
 850
 851 static const uint32_t ast_cursor_plane_formats[] = {
 852         DRM_FORMAT_ARGB8888,
 853 };
 854
 855 static int ast_cursor_plane_helper_atomic_check(struct drm_plane *plane,
 856                                                 struct drm_atomic_state *state)
 857 {
 858         struct drm_plane_state *new_plane_state = drm_atomic_get_new_plane_state(state, plane);
 859         struct drm_framebuffer *new_fb = new_plane_state->fb;
 860         struct drm_crtc_state *new_crtc_state = NULL;
 861         int ret;
 862
 863         if (new_plane_state->crtc)
 864                 new_crtc_state = drm_atomic_get_new_crtc_state(state, new_plane_state->crtc);
 865
 866         ret = drm_atomic_helper_check_plane_state(new_plane_state, new_crtc_state,
 867                                                   DRM_PLANE_NO_SCALING,
 868                                                   DRM_PLANE_NO_SCALING,
 869                                                   true, true);
 870         if (ret || !new_plane_state->visible)
 871                 return ret;
 872
 873         if (new_fb->width > AST_MAX_HWC_WIDTH || new_fb->height > AST_MAX_HWC_HEIGHT)
 874                 return -EINVAL;
 875
 876         return 0;
 877 }
 878
 879 static void ast_cursor_plane_helper_atomic_update(struct drm_plane *plane,
 880                                                   struct drm_atomic_state *state)
 881 {
 882         struct ast_plane *ast_plane = to_ast_plane(plane);
 883         struct drm_plane_state *plane_state = drm_atomic_get_new_plane_state(state, plane);
 884         struct drm_shadow_plane_state *shadow_plane_state = to_drm_shadow_plane_state(plane_state);
 885         struct drm_framebuffer *fb = plane_state->fb;
 886         struct drm_plane_state *old_plane_state = drm_atomic_get_old_plane_state(state, plane);
 887         struct ast_device *ast = to_ast_device(plane->dev);
 888         struct iosys_map src_map = shadow_plane_state->data[0];
 889         struct drm_rect damage;
 890         const u8 *src = src_map.vaddr; /* TODO: Use mapping abstraction properly */
 891         u64 dst_off = ast_plane->offset;
 892         u8 __iomem *dst = ast_plane->vaddr; /* TODO: Use mapping abstraction properly */
 893         u8 __iomem *sig = dst + AST_HWC_SIZE; /* TODO: Use mapping abstraction properly */
 894         unsigned int offset_x, offset_y;
 895         u16 x, y;
 896         u8 x_offset, y_offset;
 897
 898         /*
 899          * Do data transfer to hardware buffer and point the scanout
 900          * engine to the offset.
 901          */
 902
 903         if (drm_atomic_helper_damage_merged(old_plane_state, plane_state, &damage)) {
 904                 ast_update_cursor_image(dst, src, fb->width, fb->height);
 905                 ast_set_cursor_base(ast, dst_off);
 906         }
 907
 908         /*
 909          * Update location in HWC signature and registers.
 910          */
 911
 912         writel(plane_state->crtc_x, sig + AST_HWC_SIGNATURE_X);
 913         writel(plane_state->crtc_y, sig + AST_HWC_SIGNATURE_Y);
 914
 915         offset_x = AST_MAX_HWC_WIDTH - fb->width;
 916         offset_y = AST_MAX_HWC_HEIGHT - fb->height;
 917
 918         if (plane_state->crtc_x < 0) {
 919                 x_offset = (-plane_state->crtc_x) + offset_x;
 920                 x = 0;
 921         } else {
 922                 x_offset = offset_x;
 923                 x = plane_state->crtc_x;
 924         }
 925         if (plane_state->crtc_y < 0) {
 926                 y_offset = (-plane_state->crtc_y) + offset_y;
 927                 y = 0;
 928         } else {
 929                 y_offset = offset_y;
 930                 y = plane_state->crtc_y;
 931         }
 932
 933         ast_set_cursor_location(ast, x, y, x_offset, y_offset);
 934
 935         /* Dummy write to enable HWC and make the HW pick-up the changes. */
 936         ast_set_cursor_enabled(ast, true);
 937 }
 938
 939 static void ast_cursor_plane_helper_atomic_disable(struct drm_plane *plane,
 940                                                    struct drm_atomic_state *state)
 941 {
 942         struct ast_device *ast = to_ast_device(plane->dev);
 943
 944         ast_set_cursor_enabled(ast, false);
 945 }
 946
 947 static const struct drm_plane_helper_funcs ast_cursor_plane_helper_funcs = {
 948         DRM_GEM_SHADOW_PLANE_HELPER_FUNCS,
 949         .atomic_check = ast_cursor_plane_helper_atomic_check,
 950         .atomic_update = ast_cursor_plane_helper_atomic_update,
 951         .atomic_disable = ast_cursor_plane_helper_atomic_disable,
 952 };
 953
 954 static const struct drm_plane_funcs ast_cursor_plane_funcs = {
 955         .update_plane = drm_atomic_helper_update_plane,
 956         .disable_plane = drm_atomic_helper_disable_plane,
 957         .destroy = drm_plane_cleanup,
 958         DRM_GEM_SHADOW_PLANE_FUNCS,
 959 };
 960
 961 static int ast_cursor_plane_init(struct ast_device *ast)
 962 {
 963         struct drm_device *dev = &ast->base;
 964         struct ast_plane *ast_cursor_plane = &ast->cursor_plane;
 965         struct drm_plane *cursor_plane = &ast_cursor_plane->base;
 966         size_t size;
 967         void __iomem *vaddr;
 968         u64 offset;
 969         int ret;
 970
 971         /*
 972          * Allocate backing storage for cursors. The BOs are permanently
 973          * pinned to the top end of the VRAM.
 974          */
 975
 976         size = roundup(AST_HWC_SIZE + AST_HWC_SIGNATURE_SIZE, PAGE_SIZE);
 977
 978         if (ast->vram_fb_available < size)
 979                 return -ENOMEM;
 980
 981         vaddr = ast->vram + ast->vram_fb_available - size;
 982         offset = ast->vram_fb_available - size;
 983
 984         ret = ast_plane_init(dev, ast_cursor_plane, vaddr, offset, size,
 985                              0x01, &ast_cursor_plane_funcs,
 986                              ast_cursor_plane_formats, ARRAY_SIZE(ast_cursor_plane_formats),
 987                              NULL, DRM_PLANE_TYPE_CURSOR);
 988         if (ret) {
 989                 drm_err(dev, "ast_plane_init() failed: %d\n", ret);
 990                 return ret;
 991         }
 992         drm_plane_helper_add(cursor_plane, &ast_cursor_plane_helper_funcs);
 993         drm_plane_enable_fb_damage_clips(cursor_plane);
 994
 995         ast->vram_fb_available -= size;
 996
 997         return 0;
 998 }
 999
1000 /*
1001  * CRTC
1002  */
1003
1004 static void ast_crtc_dpms(struct drm_crtc *crtc, int mode)
1005 {
1006         struct ast_device *ast = to_ast_device(crtc->dev);
1007         u8 ch = AST_DPMS_VSYNC_OFF | AST_DPMS_HSYNC_OFF;
1008         struct ast_crtc_state *ast_state;
1009         const struct drm_format_info *format;
1010         struct ast_vbios_mode_info *vbios_mode_info;
1011
1012         /* TODO: Maybe control display signal generation with
1013          *       Sync Enable (bit CR17.7).
1014          */
1015         switch (mode) {
1016         case DRM_MODE_DPMS_ON:
1017                 ast_set_index_reg_mask(ast, AST_IO_VGASRI,  0x01, 0xdf, 0);
1018                 ast_set_index_reg_mask(ast, AST_IO_VGACRI, 0xb6, 0xfc, 0);
1019                 if (ast->tx_chip_types & AST_TX_DP501_BIT)
1020                         ast_set_dp501_video_output(crtc->dev, 1);
1021
1022                 if (ast->tx_chip_types & AST_TX_ASTDP_BIT) {
1023                         ast_dp_power_on_off(crtc->dev, AST_DP_POWER_ON);
1024                         ast_wait_for_vretrace(ast);
1025                         ast_dp_set_on_off(crtc->dev, 1);
1026                 }
1027
1028                 ast_state = to_ast_crtc_state(crtc->state);
1029                 format = ast_state->format;
1030
1031                 if (format) {
1032                         vbios_mode_info = &ast_state->vbios_mode_info;
1033
1034                         ast_set_color_reg(ast, format);
1035                         ast_set_vbios_color_reg(ast, format, vbios_mode_info);
1036                         if (crtc->state->gamma_lut)
1037                                 ast_crtc_set_gamma(ast, format, crtc->state->gamma_lut->data);
1038                         else
1039                                 ast_crtc_set_gamma_linear(ast, format);
1040                 }
1041                 break;
1042         case DRM_MODE_DPMS_STANDBY:
1043         case DRM_MODE_DPMS_SUSPEND:
1044         case DRM_MODE_DPMS_OFF:
1045                 ch = mode;
1046                 if (ast->tx_chip_types & AST_TX_DP501_BIT)
1047                         ast_set_dp501_video_output(crtc->dev, 0);
1048
1049                 if (ast->tx_chip_types & AST_TX_ASTDP_BIT) {
1050                         ast_dp_set_on_off(crtc->dev, 0);
1051                         ast_dp_power_on_off(crtc->dev, AST_DP_POWER_OFF);
1052                 }
1053
1054                 ast_set_index_reg_mask(ast, AST_IO_VGASRI,  0x01, 0xdf, 0x20);
1055                 ast_set_index_reg_mask(ast, AST_IO_VGACRI, 0xb6, 0xfc, ch);
1056                 break;
1057         }
1058 }
1059
1060 static enum drm_mode_status
1061 ast_crtc_helper_mode_valid(struct drm_crtc *crtc, const struct drm_display_mode *mode)
1062 {
1063         struct ast_device *ast = to_ast_device(crtc->dev);
1064         enum drm_mode_status status;
1065         uint32_t jtemp;
1066
1067         if (ast->support_wide_screen) {
1068                 if ((mode->hdisplay == 1680) && (mode->vdisplay == 1050))
1069                         return MODE_OK;
1070                 if ((mode->hdisplay == 1280) && (mode->vdisplay == 800))
1071                         return MODE_OK;
1072                 if ((mode->hdisplay == 1440) && (mode->vdisplay == 900))
1073                         return MODE_OK;
1074                 if ((mode->hdisplay == 1360) && (mode->vdisplay == 768))
1075                         return MODE_OK;
1076                 if ((mode->hdisplay == 1600) && (mode->vdisplay == 900))
1077                         return MODE_OK;
1078                 if ((mode->hdisplay == 1152) && (mode->vdisplay == 864))
1079                         return MODE_OK;
1080
1081                 if ((ast->chip == AST2100) || // GEN2, but not AST1100 (?)
1082                     (ast->chip == AST2200) || // GEN3, but not AST2150 (?)
1083                     IS_AST_GEN4(ast) || IS_AST_GEN5(ast) ||
1084                     IS_AST_GEN6(ast) || IS_AST_GEN7(ast)) {
1085                         if ((mode->hdisplay == 1920) && (mode->vdisplay == 1080))
1086                                 return MODE_OK;
1087
1088                         if ((mode->hdisplay == 1920) && (mode->vdisplay == 1200)) {
1089                                 jtemp = ast_get_index_reg_mask(ast, AST_IO_VGACRI, 0xd1, 0xff);
1090                                 if (jtemp & 0x01)
1091                                         return MODE_NOMODE;
1092                                 else
1093                                         return MODE_OK;
1094                         }
1095                 }
1096         }
1097
1098         status = MODE_NOMODE;
1099
1100         switch (mode->hdisplay) {
1101         case 640:
1102                 if (mode->vdisplay == 480)
1103                         status = MODE_OK;
1104                 break;
1105         case 800:
1106                 if (mode->vdisplay == 600)
1107                         status = MODE_OK;
1108                 break;
1109         case 1024:
1110                 if (mode->vdisplay == 768)
1111                         status = MODE_OK;
1112                 break;
1113         case 1152:
1114                 if (mode->vdisplay == 864)
1115                         status = MODE_OK;
1116                 break;
1117         case 1280:
1118                 if (mode->vdisplay == 1024)
1119                         status = MODE_OK;
1120                 break;
1121         case 1600:
1122                 if (mode->vdisplay == 1200)
1123                         status = MODE_OK;
1124                 break;
1125         default:
1126                 break;
1127         }
1128
1129         return status;
1130 }
1131
1132 static int ast_crtc_helper_atomic_check(struct drm_crtc *crtc,
1133                                         struct drm_atomic_state *state)
1134 {
1135         struct drm_crtc_state *crtc_state = drm_atomic_get_new_crtc_state(state, crtc);
1136         struct drm_crtc_state *old_crtc_state = drm_atomic_get_old_crtc_state(state, crtc);
1137         struct ast_crtc_state *old_ast_crtc_state = to_ast_crtc_state(old_crtc_state);
1138         struct drm_device *dev = crtc->dev;
1139         struct ast_crtc_state *ast_state;
1140         const struct drm_format_info *format;
1141         bool succ;
1142         int ret;
1143
1144         if (!crtc_state->enable)
1145                 return 0;
1146
1147         ret = drm_atomic_helper_check_crtc_primary_plane(crtc_state);
1148         if (ret)
1149                 return ret;
1150
1151         ast_state = to_ast_crtc_state(crtc_state);
1152
1153         format = ast_state->format;
1154         if (drm_WARN_ON_ONCE(dev, !format))
1155                 return -EINVAL; /* BUG: We didn't set format in primary check(). */
1156
1157         /*
1158          * The gamma LUT has to be reloaded after changing the primary
1159          * plane's color format.
1160          */
1161         if (old_ast_crtc_state->format != format)
1162                 crtc_state->color_mgmt_changed = true;
1163
1164         if (crtc_state->color_mgmt_changed && crtc_state->gamma_lut) {
1165                 if (crtc_state->gamma_lut->length !=
1166                     AST_LUT_SIZE * sizeof(struct drm_color_lut)) {
1167                         drm_err(dev, "Wrong size for gamma_lut %zu\n",
1168                                 crtc_state->gamma_lut->length);
1169                         return -EINVAL;
1170                 }
1171         }
1172
1173         succ = ast_get_vbios_mode_info(format, &crtc_state->mode,
1174                                        &crtc_state->adjusted_mode,
1175                                        &ast_state->vbios_mode_info);
1176         if (!succ)
1177                 return -EINVAL;
1178
1179         return 0;
1180 }
1181
1182 static void
1183 ast_crtc_helper_atomic_flush(struct drm_crtc *crtc,
1184                              struct drm_atomic_state *state)
1185 {
1186         struct drm_crtc_state *crtc_state = drm_atomic_get_new_crtc_state(state,
1187                                                                           crtc);
1188         struct drm_device *dev = crtc->dev;
1189         struct ast_device *ast = to_ast_device(dev);
1190         struct ast_crtc_state *ast_crtc_state = to_ast_crtc_state(crtc_state);
1191         struct ast_vbios_mode_info *vbios_mode_info = &ast_crtc_state->vbios_mode_info;
1192
1193         /*
1194          * The gamma LUT has to be reloaded after changing the primary
1195          * plane's color format.
1196          */
1197         if (crtc_state->enable && crtc_state->color_mgmt_changed) {
1198                 if (crtc_state->gamma_lut)
1199                         ast_crtc_set_gamma(ast,
1200                                            ast_crtc_state->format,
1201                                            crtc_state->gamma_lut->data);
1202                 else
1203                         ast_crtc_set_gamma_linear(ast, ast_crtc_state->format);
1204         }
1205
1206         //Set Aspeed Display-Port
1207         if (ast->tx_chip_types & AST_TX_ASTDP_BIT)
1208                 ast_dp_set_mode(crtc, vbios_mode_info);
1209 }
1210
1211 static void ast_crtc_helper_atomic_enable(struct drm_crtc *crtc, struct drm_atomic_state *state)
1212 {
1213         struct drm_device *dev = crtc->dev;
1214         struct ast_device *ast = to_ast_device(dev);
1215         struct drm_crtc_state *crtc_state = drm_atomic_get_new_crtc_state(state, crtc);
1216         struct ast_crtc_state *ast_crtc_state = to_ast_crtc_state(crtc_state);
1217         struct ast_vbios_mode_info *vbios_mode_info =
1218                 &ast_crtc_state->vbios_mode_info;
1219         struct drm_display_mode *adjusted_mode = &crtc_state->adjusted_mode;
1220
1221         ast_set_vbios_mode_reg(ast, adjusted_mode, vbios_mode_info);
1222         ast_set_index_reg(ast, AST_IO_VGACRI, 0xa1, 0x06);
1223         ast_set_std_reg(ast, adjusted_mode, vbios_mode_info);
1224         ast_set_crtc_reg(ast, adjusted_mode, vbios_mode_info);
1225         ast_set_dclk_reg(ast, adjusted_mode, vbios_mode_info);
1226         ast_set_crtthd_reg(ast);
1227         ast_set_sync_reg(ast, adjusted_mode, vbios_mode_info);
1228
1229         ast_crtc_dpms(crtc, DRM_MODE_DPMS_ON);
1230 }
1231
1232 static void ast_crtc_helper_atomic_disable(struct drm_crtc *crtc, struct drm_atomic_state *state)
1233 {
1234         struct drm_crtc_state *old_crtc_state = drm_atomic_get_old_crtc_state(state, crtc);
1235         struct drm_device *dev = crtc->dev;
1236         struct ast_device *ast = to_ast_device(dev);
1237
1238         ast_crtc_dpms(crtc, DRM_MODE_DPMS_OFF);
1239
1240         /*
1241          * HW cursors require the underlying primary plane and CRTC to
1242          * display a valid mode and image. This is not the case during
1243          * full modeset operations. So we temporarily disable any active
1244          * plane, including the HW cursor. Each plane's atomic_update()
1245          * helper will re-enable it if necessary.
1246          *
1247          * We only do this during *full* modesets. It does not affect
1248          * simple pageflips on the planes.
1249          */
1250         drm_atomic_helper_disable_planes_on_crtc(old_crtc_state, false);
1251
1252         /*
1253          * Ensure that no scanout takes place before reprogramming mode
1254          * and format registers.
1255          */
1256         ast_wait_for_vretrace(ast);
1257 }
1258
1259 static const struct drm_crtc_helper_funcs ast_crtc_helper_funcs = {
1260         .mode_valid = ast_crtc_helper_mode_valid,
1261         .atomic_check = ast_crtc_helper_atomic_check,
1262         .atomic_flush = ast_crtc_helper_atomic_flush,
1263         .atomic_enable = ast_crtc_helper_atomic_enable,
1264         .atomic_disable = ast_crtc_helper_atomic_disable,
1265 };
1266
1267 static void ast_crtc_reset(struct drm_crtc *crtc)
1268 {
1269         struct ast_crtc_state *ast_state =
1270                 kzalloc(sizeof(*ast_state), GFP_KERNEL);
1271
1272         if (crtc->state)
1273                 crtc->funcs->atomic_destroy_state(crtc, crtc->state);
1274
1275         if (ast_state)
1276                 __drm_atomic_helper_crtc_reset(crtc, &ast_state->base);
1277         else
1278                 __drm_atomic_helper_crtc_reset(crtc, NULL);
1279 }
1280
1281 static struct drm_crtc_state *
1282 ast_crtc_atomic_duplicate_state(struct drm_crtc *crtc)
1283 {
1284         struct ast_crtc_state *new_ast_state, *ast_state;
1285         struct drm_device *dev = crtc->dev;
1286
1287         if (drm_WARN_ON(dev, !crtc->state))
1288                 return NULL;
1289
1290         new_ast_state = kmalloc(sizeof(*new_ast_state), GFP_KERNEL);
1291         if (!new_ast_state)
1292                 return NULL;
1293         __drm_atomic_helper_crtc_duplicate_state(crtc, &new_ast_state->base);
1294
1295         ast_state = to_ast_crtc_state(crtc->state);
1296
1297         new_ast_state->format = ast_state->format;
1298         memcpy(&new_ast_state->vbios_mode_info, &ast_state->vbios_mode_info,
1299                sizeof(new_ast_state->vbios_mode_info));
1300
1301         return &new_ast_state->base;
1302 }
1303
1304 static void ast_crtc_atomic_destroy_state(struct drm_crtc *crtc,
1305                                           struct drm_crtc_state *state)
1306 {
1307         struct ast_crtc_state *ast_state = to_ast_crtc_state(state);
1308
1309         __drm_atomic_helper_crtc_destroy_state(&ast_state->base);
1310         kfree(ast_state);
1311 }
1312
1313 static const struct drm_crtc_funcs ast_crtc_funcs = {
1314         .reset = ast_crtc_reset,
1315         .destroy = drm_crtc_cleanup,
1316         .set_config = drm_atomic_helper_set_config,
1317         .page_flip = drm_atomic_helper_page_flip,
1318         .atomic_duplicate_state = ast_crtc_atomic_duplicate_state,
1319         .atomic_destroy_state = ast_crtc_atomic_destroy_state,
1320 };
1321
1322 static int ast_crtc_init(struct drm_device *dev)
1323 {
1324         struct ast_device *ast = to_ast_device(dev);
1325         struct drm_crtc *crtc = &ast->crtc;
1326         int ret;
1327
1328         ret = drm_crtc_init_with_planes(dev, crtc, &ast->primary_plane.base,
1329                                         &ast->cursor_plane.base, &ast_crtc_funcs,
1330                                         NULL);
1331         if (ret)
1332                 return ret;
1333
1334         drm_mode_crtc_set_gamma_size(crtc, AST_LUT_SIZE);
1335         drm_crtc_enable_color_mgmt(crtc, 0, false, AST_LUT_SIZE);
1336
1337         drm_crtc_helper_add(crtc, &ast_crtc_helper_funcs);
1338
1339         return 0;
1340 }
1341
1342 /*
1343  * VGA Connector
1344  */
1345
1346 static int ast_vga_connector_helper_get_modes(struct drm_connector *connector)
1347 {
1348         struct ast_vga_connector *ast_vga_connector = to_ast_vga_connector(connector);
1349         struct drm_device *dev = connector->dev;
1350         struct ast_device *ast = to_ast_device(dev);
1351         struct edid *edid;
1352         int count;
1353
1354         if (!ast_vga_connector->i2c)
1355                 goto err_drm_connector_update_edid_property;
1356
1357         /*
1358          * Protect access to I/O registers from concurrent modesetting
1359          * by acquiring the I/O-register lock.
1360          */
1361         mutex_lock(&ast->modeset_lock);
1362
1363         edid = drm_get_edid(connector, &ast_vga_connector->i2c->adapter);
1364         if (!edid)
1365                 goto err_mutex_unlock;
1366
1367         mutex_unlock(&ast->modeset_lock);
1368
1369         count = drm_add_edid_modes(connector, edid);
1370         kfree(edid);
1371
1372         return count;
1373
1374 err_mutex_unlock:
1375         mutex_unlock(&ast->modeset_lock);
1376 err_drm_connector_update_edid_property:
1377         drm_connector_update_edid_property(connector, NULL);
1378         return 0;
1379 }
1380
1381 static const struct drm_connector_helper_funcs ast_vga_connector_helper_funcs = {
1382         .get_modes = ast_vga_connector_helper_get_modes,
1383 };
1384
1385 static const struct drm_connector_funcs ast_vga_connector_funcs = {
1386         .reset = drm_atomic_helper_connector_reset,
1387         .fill_modes = drm_helper_probe_single_connector_modes,
1388         .destroy = drm_connector_cleanup,
1389         .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
1390         .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
1391 };
1392
1393 static int ast_vga_connector_init(struct drm_device *dev,
1394                                   struct ast_vga_connector *ast_vga_connector)
1395 {
1396         struct drm_connector *connector = &ast_vga_connector->base;
1397         int ret;
1398
1399         ast_vga_connector->i2c = ast_i2c_create(dev);
1400         if (!ast_vga_connector->i2c)
1401                 drm_err(dev, "failed to add ddc bus for connector\n");
1402
1403         if (ast_vga_connector->i2c)
1404                 ret = drm_connector_init_with_ddc(dev, connector, &ast_vga_connector_funcs,
1405                                                   DRM_MODE_CONNECTOR_VGA,
1406                                                   &ast_vga_connector->i2c->adapter);
1407         else
1408                 ret = drm_connector_init(dev, connector, &ast_vga_connector_funcs,
1409                                          DRM_MODE_CONNECTOR_VGA);
1410         if (ret)
1411                 return ret;
1412
1413         drm_connector_helper_add(connector, &ast_vga_connector_helper_funcs);
1414
1415         connector->interlace_allowed = 0;
1416         connector->doublescan_allowed = 0;
1417
1418         connector->polled = DRM_CONNECTOR_POLL_CONNECT;
1419
1420         return 0;
1421 }
1422
1423 static int ast_vga_output_init(struct ast_device *ast)
1424 {
1425         struct drm_device *dev = &ast->base;
1426         struct drm_crtc *crtc = &ast->crtc;
1427         struct drm_encoder *encoder = &ast->output.vga.encoder;
1428         struct ast_vga_connector *ast_vga_connector = &ast->output.vga.vga_connector;
1429         struct drm_connector *connector = &ast_vga_connector->base;
1430         int ret;
1431
1432         ret = drm_simple_encoder_init(dev, encoder, DRM_MODE_ENCODER_DAC);
1433         if (ret)
1434                 return ret;
1435         encoder->possible_crtcs = drm_crtc_mask(crtc);
1436
1437         ret = ast_vga_connector_init(dev, ast_vga_connector);
1438         if (ret)
1439                 return ret;
1440
1441         ret = drm_connector_attach_encoder(connector, encoder);
1442         if (ret)
1443                 return ret;
1444
1445         return 0;
1446 }
1447
1448 /*
1449  * SIL164 Connector
1450  */
1451
1452 static int ast_sil164_connector_helper_get_modes(struct drm_connector *connector)
1453 {
1454         struct ast_sil164_connector *ast_sil164_connector = to_ast_sil164_connector(connector);
1455         struct drm_device *dev = connector->dev;
1456         struct ast_device *ast = to_ast_device(dev);
1457         struct edid *edid;
1458         int count;
1459
1460         if (!ast_sil164_connector->i2c)
1461                 goto err_drm_connector_update_edid_property;
1462
1463         /*
1464          * Protect access to I/O registers from concurrent modesetting
1465          * by acquiring the I/O-register lock.
1466          */
1467         mutex_lock(&ast->modeset_lock);
1468
1469         edid = drm_get_edid(connector, &ast_sil164_connector->i2c->adapter);
1470         if (!edid)
1471                 goto err_mutex_unlock;
1472
1473         mutex_unlock(&ast->modeset_lock);
1474
1475         count = drm_add_edid_modes(connector, edid);
1476         kfree(edid);
1477
1478         return count;
1479
1480 err_mutex_unlock:
1481         mutex_unlock(&ast->modeset_lock);
1482 err_drm_connector_update_edid_property:
1483         drm_connector_update_edid_property(connector, NULL);
1484         return 0;
1485 }
1486
1487 static const struct drm_connector_helper_funcs ast_sil164_connector_helper_funcs = {
1488         .get_modes = ast_sil164_connector_helper_get_modes,
1489 };
1490
1491 static const struct drm_connector_funcs ast_sil164_connector_funcs = {
1492         .reset = drm_atomic_helper_connector_reset,
1493         .fill_modes = drm_helper_probe_single_connector_modes,
1494         .destroy = drm_connector_cleanup,
1495         .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
1496         .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
1497 };
1498
1499 static int ast_sil164_connector_init(struct drm_device *dev,
1500                                      struct ast_sil164_connector *ast_sil164_connector)
1501 {
1502         struct drm_connector *connector = &ast_sil164_connector->base;
1503         int ret;
1504
1505         ast_sil164_connector->i2c = ast_i2c_create(dev);
1506         if (!ast_sil164_connector->i2c)
1507                 drm_err(dev, "failed to add ddc bus for connector\n");
1508
1509         if (ast_sil164_connector->i2c)
1510                 ret = drm_connector_init_with_ddc(dev, connector, &ast_sil164_connector_funcs,
1511                                                   DRM_MODE_CONNECTOR_DVII,
1512                                                   &ast_sil164_connector->i2c->adapter);
1513         else
1514                 ret = drm_connector_init(dev, connector, &ast_sil164_connector_funcs,
1515                                          DRM_MODE_CONNECTOR_DVII);
1516         if (ret)
1517                 return ret;
1518
1519         drm_connector_helper_add(connector, &ast_sil164_connector_helper_funcs);
1520
1521         connector->interlace_allowed = 0;
1522         connector->doublescan_allowed = 0;
1523
1524         connector->polled = DRM_CONNECTOR_POLL_CONNECT;
1525
1526         return 0;
1527 }
1528
1529 static int ast_sil164_output_init(struct ast_device *ast)
1530 {
1531         struct drm_device *dev = &ast->base;
1532         struct drm_crtc *crtc = &ast->crtc;
1533         struct drm_encoder *encoder = &ast->output.sil164.encoder;
1534         struct ast_sil164_connector *ast_sil164_connector = &ast->output.sil164.sil164_connector;
1535         struct drm_connector *connector = &ast_sil164_connector->base;
1536         int ret;
1537
1538         ret = drm_simple_encoder_init(dev, encoder, DRM_MODE_ENCODER_TMDS);
1539         if (ret)
1540                 return ret;
1541         encoder->possible_crtcs = drm_crtc_mask(crtc);
1542
1543         ret = ast_sil164_connector_init(dev, ast_sil164_connector);
1544         if (ret)
1545                 return ret;
1546
1547         ret = drm_connector_attach_encoder(connector, encoder);
1548         if (ret)
1549                 return ret;
1550
1551         return 0;
1552 }
1553
1554 /*
1555  * DP501 Connector
1556  */
1557
1558 static int ast_dp501_connector_helper_get_modes(struct drm_connector *connector)
1559 {
1560         void *edid;
1561         bool succ;
1562         int count;
1563
1564         edid = kmalloc(EDID_LENGTH, GFP_KERNEL);
1565         if (!edid)
1566                 goto err_drm_connector_update_edid_property;
1567
1568         succ = ast_dp501_read_edid(connector->dev, edid);
1569         if (!succ)
1570                 goto err_kfree;
1571
1572         drm_connector_update_edid_property(connector, edid);
1573         count = drm_add_edid_modes(connector, edid);
1574         kfree(edid);
1575
1576         return count;
1577
1578 err_kfree:
1579         kfree(edid);
1580 err_drm_connector_update_edid_property:
1581         drm_connector_update_edid_property(connector, NULL);
1582         return 0;
1583 }
1584
1585 static int ast_dp501_connector_helper_detect_ctx(struct drm_connector *connector,
1586                                                  struct drm_modeset_acquire_ctx *ctx,
1587                                                  bool force)
1588 {
1589         struct ast_device *ast = to_ast_device(connector->dev);
1590
1591         if (ast_dp501_is_connected(ast))
1592                 return connector_status_connected;
1593         return connector_status_disconnected;
1594 }
1595
1596 static const struct drm_connector_helper_funcs ast_dp501_connector_helper_funcs = {
1597         .get_modes = ast_dp501_connector_helper_get_modes,
1598         .detect_ctx = ast_dp501_connector_helper_detect_ctx,
1599 };
1600
1601 static const struct drm_connector_funcs ast_dp501_connector_funcs = {
1602         .reset = drm_atomic_helper_connector_reset,
1603         .fill_modes = drm_helper_probe_single_connector_modes,
1604         .destroy = drm_connector_cleanup,
1605         .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
1606         .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
1607 };
1608
1609 static int ast_dp501_connector_init(struct drm_device *dev, struct drm_connector *connector)
1610 {
1611         int ret;
1612
1613         ret = drm_connector_init(dev, connector, &ast_dp501_connector_funcs,
1614                                  DRM_MODE_CONNECTOR_DisplayPort);
1615         if (ret)
1616                 return ret;
1617
1618         drm_connector_helper_add(connector, &ast_dp501_connector_helper_funcs);
1619
1620         connector->interlace_allowed = 0;
1621         connector->doublescan_allowed = 0;
1622
1623         connector->polled = DRM_CONNECTOR_POLL_CONNECT | DRM_CONNECTOR_POLL_DISCONNECT;
1624
1625         return 0;
1626 }
1627
1628 static int ast_dp501_output_init(struct ast_device *ast)
1629 {
1630         struct drm_device *dev = &ast->base;
1631         struct drm_crtc *crtc = &ast->crtc;
1632         struct drm_encoder *encoder = &ast->output.dp501.encoder;
1633         struct drm_connector *connector = &ast->output.dp501.connector;
1634         int ret;
1635
1636         ret = drm_simple_encoder_init(dev, encoder, DRM_MODE_ENCODER_TMDS);
1637         if (ret)
1638                 return ret;
1639         encoder->possible_crtcs = drm_crtc_mask(crtc);
1640
1641         ret = ast_dp501_connector_init(dev, connector);
1642         if (ret)
1643                 return ret;
1644
1645         ret = drm_connector_attach_encoder(connector, encoder);
1646         if (ret)
1647                 return ret;
1648
1649         return 0;
1650 }
1651
1652 /*
1653  * ASPEED Display-Port Connector
1654  */
1655
1656 static int ast_astdp_connector_helper_get_modes(struct drm_connector *connector)
1657 {
1658         void *edid;
1659         struct drm_device *dev = connector->dev;
1660         struct ast_device *ast = to_ast_device(dev);
1661
1662         int succ;
1663         int count;
1664
1665         edid = kmalloc(EDID_LENGTH, GFP_KERNEL);
1666         if (!edid)
1667                 goto err_drm_connector_update_edid_property;
1668
1669         /*
1670          * Protect access to I/O registers from concurrent modesetting
1671          * by acquiring the I/O-register lock.
1672          */
1673         mutex_lock(&ast->modeset_lock);
1674
1675         succ = ast_astdp_read_edid(connector->dev, edid);
1676         if (succ < 0)
1677                 goto err_mutex_unlock;
1678
1679         mutex_unlock(&ast->modeset_lock);
1680
1681         drm_connector_update_edid_property(connector, edid);
1682         count = drm_add_edid_modes(connector, edid);
1683         kfree(edid);
1684
1685         return count;
1686
1687 err_mutex_unlock:
1688         mutex_unlock(&ast->modeset_lock);
1689         kfree(edid);
1690 err_drm_connector_update_edid_property:
1691         drm_connector_update_edid_property(connector, NULL);
1692         return 0;
1693 }
1694
1695 static int ast_astdp_connector_helper_detect_ctx(struct drm_connector *connector,
1696                                                  struct drm_modeset_acquire_ctx *ctx,
1697                                                  bool force)
1698 {
1699         struct ast_device *ast = to_ast_device(connector->dev);
1700
1701         if (ast_astdp_is_connected(ast))
1702                 return connector_status_connected;
1703         return connector_status_disconnected;
1704 }
1705
1706 static const struct drm_connector_helper_funcs ast_astdp_connector_helper_funcs = {
1707         .get_modes = ast_astdp_connector_helper_get_modes,
1708         .detect_ctx = ast_astdp_connector_helper_detect_ctx,
1709 };
1710
1711 static const struct drm_connector_funcs ast_astdp_connector_funcs = {
1712         .reset = drm_atomic_helper_connector_reset,
1713         .fill_modes = drm_helper_probe_single_connector_modes,
1714         .destroy = drm_connector_cleanup,
1715         .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
1716         .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
1717 };
1718
1719 static int ast_astdp_connector_init(struct drm_device *dev, struct drm_connector *connector)
1720 {
1721         int ret;
1722
1723         ret = drm_connector_init(dev, connector, &ast_astdp_connector_funcs,
1724                                  DRM_MODE_CONNECTOR_DisplayPort);
1725         if (ret)
1726                 return ret;
1727
1728         drm_connector_helper_add(connector, &ast_astdp_connector_helper_funcs);
1729
1730         connector->interlace_allowed = 0;
1731         connector->doublescan_allowed = 0;
1732
1733         connector->polled = DRM_CONNECTOR_POLL_CONNECT | DRM_CONNECTOR_POLL_DISCONNECT;
1734
1735         return 0;
1736 }
1737
1738 static int ast_astdp_output_init(struct ast_device *ast)
1739 {
1740         struct drm_device *dev = &ast->base;
1741         struct drm_crtc *crtc = &ast->crtc;
1742         struct drm_encoder *encoder = &ast->output.astdp.encoder;
1743         struct drm_connector *connector = &ast->output.astdp.connector;
1744         int ret;
1745
1746         ret = drm_simple_encoder_init(dev, encoder, DRM_MODE_ENCODER_TMDS);
1747         if (ret)
1748                 return ret;
1749         encoder->possible_crtcs = drm_crtc_mask(crtc);
1750
1751         ret = ast_astdp_connector_init(dev, connector);
1752         if (ret)
1753                 return ret;
1754
1755         ret = drm_connector_attach_encoder(connector, encoder);
1756         if (ret)
1757                 return ret;
1758
1759         return 0;
1760 }
1761
1762 /*
1763  * BMC virtual Connector
1764  */
1765
1766 static const struct drm_encoder_funcs ast_bmc_encoder_funcs = {
1767         .destroy = drm_encoder_cleanup,
1768 };
1769
1770 static int ast_bmc_connector_helper_detect_ctx(struct drm_connector *connector,
1771                                                struct drm_modeset_acquire_ctx *ctx,
1772                                                bool force)
1773 {
1774         struct ast_bmc_connector *bmc_connector = to_ast_bmc_connector(connector);
1775         struct drm_connector *physical_connector = bmc_connector->physical_connector;
1776
1777         /*
1778          * Most user-space compositors cannot handle more than one connected
1779          * connector per CRTC. Hence, we only mark the BMC as connected if the
1780          * physical connector is disconnected. If the physical connector's status
1781          * is connected or unknown, the BMC remains disconnected. This has no
1782          * effect on the output of the BMC.
1783          *
1784          * FIXME: Remove this logic once user-space compositors can handle more
1785          *        than one connector per CRTC. The BMC should always be connected.
1786          */
1787
1788         if (physical_connector && physical_connector->status == connector_status_disconnected)
1789                 return connector_status_connected;
1790
1791         return connector_status_disconnected;
1792 }
1793
1794 static int ast_bmc_connector_helper_get_modes(struct drm_connector *connector)
1795 {
1796         return drm_add_modes_noedid(connector, 4096, 4096);
1797 }
1798
1799 static const struct drm_connector_helper_funcs ast_bmc_connector_helper_funcs = {
1800         .get_modes = ast_bmc_connector_helper_get_modes,
1801         .detect_ctx = ast_bmc_connector_helper_detect_ctx,
1802 };
1803
1804 static const struct drm_connector_funcs ast_bmc_connector_funcs = {
1805         .reset = drm_atomic_helper_connector_reset,
1806         .fill_modes = drm_helper_probe_single_connector_modes,
1807         .destroy = drm_connector_cleanup,
1808         .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
1809         .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
1810 };
1811
1812 static int ast_bmc_connector_init(struct drm_device *dev,
1813                                   struct ast_bmc_connector *bmc_connector,
1814                                   struct drm_connector *physical_connector)
1815 {
1816         struct drm_connector *connector = &bmc_connector->base;
1817         int ret;
1818
1819         ret = drm_connector_init(dev, connector, &ast_bmc_connector_funcs,
1820                                  DRM_MODE_CONNECTOR_VIRTUAL);
1821         if (ret)
1822                 return ret;
1823
1824         drm_connector_helper_add(connector, &ast_bmc_connector_helper_funcs);
1825
1826         bmc_connector->physical_connector = physical_connector;
1827
1828         return 0;
1829 }
1830
1831 static int ast_bmc_output_init(struct ast_device *ast,
1832                                struct drm_connector *physical_connector)
1833 {
1834         struct drm_device *dev = &ast->base;
1835         struct drm_crtc *crtc = &ast->crtc;
1836         struct drm_encoder *encoder = &ast->output.bmc.encoder;
1837         struct ast_bmc_connector *bmc_connector = &ast->output.bmc.bmc_connector;
1838         struct drm_connector *connector = &bmc_connector->base;
1839         int ret;
1840
1841         ret = drm_encoder_init(dev, encoder,
1842                                &ast_bmc_encoder_funcs,
1843                                DRM_MODE_ENCODER_VIRTUAL, "ast_bmc");
1844         if (ret)
1845                 return ret;
1846         encoder->possible_crtcs = drm_crtc_mask(crtc);
1847
1848         ret = ast_bmc_connector_init(dev, bmc_connector, physical_connector);
1849         if (ret)
1850                 return ret;
1851
1852         ret = drm_connector_attach_encoder(connector, encoder);
1853         if (ret)
1854                 return ret;
1855
1856         return 0;
1857 }
1858
1859 /*
1860  * Mode config
1861  */
1862
1863 static void ast_mode_config_helper_atomic_commit_tail(struct drm_atomic_state *state)
1864 {
1865         struct ast_device *ast = to_ast_device(state->dev);
1866
1867         /*
1868          * Concurrent operations could possibly trigger a call to
1869          * drm_connector_helper_funcs.get_modes by trying to read the
1870          * display modes. Protect access to I/O registers by acquiring
1871          * the I/O-register lock. Released in atomic_flush().
1872          */
1873         mutex_lock(&ast->modeset_lock);
1874         drm_atomic_helper_commit_tail_rpm(state);
1875         mutex_unlock(&ast->modeset_lock);
1876 }
1877
1878 static const struct drm_mode_config_helper_funcs ast_mode_config_helper_funcs = {
1879         .atomic_commit_tail = ast_mode_config_helper_atomic_commit_tail,
1880 };
1881
1882 static enum drm_mode_status ast_mode_config_mode_valid(struct drm_device *dev,
1883                                                        const struct drm_display_mode *mode)
1884 {
1885         static const unsigned long max_bpp = 4; /* DRM_FORMAT_XRGB8888 */
1886         struct ast_device *ast = to_ast_device(dev);
1887         unsigned long fbsize, fbpages, max_fbpages;
1888
1889         max_fbpages = (ast->vram_fb_available) >> PAGE_SHIFT;
1890
1891         fbsize = mode->hdisplay * mode->vdisplay * max_bpp;
1892         fbpages = DIV_ROUND_UP(fbsize, PAGE_SIZE);
1893
1894         if (fbpages > max_fbpages)
1895                 return MODE_MEM;
1896
1897         return MODE_OK;
1898 }
1899
1900 static const struct drm_mode_config_funcs ast_mode_config_funcs = {
1901         .fb_create = drm_gem_fb_create_with_dirty,
1902         .mode_valid = ast_mode_config_mode_valid,
1903         .atomic_check = drm_atomic_helper_check,
1904         .atomic_commit = drm_atomic_helper_commit,
1905 };
1906
1907 int ast_mode_config_init(struct ast_device *ast)
1908 {
1909         struct drm_device *dev = &ast->base;
1910         struct drm_connector *physical_connector = NULL;
1911         int ret;
1912
1913         ret = drmm_mutex_init(dev, &ast->modeset_lock);
1914         if (ret)
1915                 return ret;
1916
1917         ret = drmm_mode_config_init(dev);
1918         if (ret)
1919                 return ret;
1920
1921         dev->mode_config.funcs = &ast_mode_config_funcs;
1922         dev->mode_config.min_width = 0;
1923         dev->mode_config.min_height = 0;
1924         dev->mode_config.preferred_depth = 24;
1925
1926         if (ast->chip == AST2100 || // GEN2, but not AST1100 (?)
1927             ast->chip == AST2200 || // GEN3, but not AST2150 (?)
1928             IS_AST_GEN7(ast) ||
1929             IS_AST_GEN6(ast) ||
1930             IS_AST_GEN5(ast) ||
1931             IS_AST_GEN4(ast)) {
1932                 dev->mode_config.max_width = 1920;
1933                 dev->mode_config.max_height = 2048;
1934         } else {
1935                 dev->mode_config.max_width = 1600;
1936                 dev->mode_config.max_height = 1200;
1937         }
1938
1939         dev->mode_config.helper_private = &ast_mode_config_helper_funcs;
1940
1941         ret = ast_primary_plane_init(ast);
1942         if (ret)
1943                 return ret;
1944
1945         ret = ast_cursor_plane_init(ast);
1946         if (ret)
1947                 return ret;
1948
1949         ast_crtc_init(dev);
1950
1951         if (ast->tx_chip_types & AST_TX_NONE_BIT) {
1952                 ret = ast_vga_output_init(ast);
1953                 if (ret)
1954                         return ret;
1955                 physical_connector = &ast->output.vga.vga_connector.base;
1956         }
1957         if (ast->tx_chip_types & AST_TX_SIL164_BIT) {
1958                 ret = ast_sil164_output_init(ast);
1959                 if (ret)
1960                         return ret;
1961                 physical_connector = &ast->output.sil164.sil164_connector.base;
1962         }
1963         if (ast->tx_chip_types & AST_TX_DP501_BIT) {
1964                 ret = ast_dp501_output_init(ast);
1965                 if (ret)
1966                         return ret;
1967                 physical_connector = &ast->output.dp501.connector;
1968         }
1969         if (ast->tx_chip_types & AST_TX_ASTDP_BIT) {
1970                 ret = ast_astdp_output_init(ast);
1971                 if (ret)
1972                         return ret;
1973                 physical_connector = &ast->output.astdp.connector;
1974         }
1975         ret = ast_bmc_output_init(ast, physical_connector);
1976         if (ret)
1977                 return ret;
1978
1979         drm_mode_config_reset(dev);
1980
1981         drm_kms_helper_poll_init(dev);
1982
1983         return 0;
1984 }