drivers/video/rockchip/hdmi/rk_hdmi_lcdc.c

   1 #include <linux/console.h>
   2 #include<linux/rk_fb.h>
   3 #include "rk_hdmi.h"
   4
   5 #define OUT_TYPE                SCREEN_HDMI
   6 #define OUT_FACE                OUT_P888
   7 #define DCLK_POL                1
   8 #define SWAP_RB                 0
   9 #define LCD_ACLK                800000000
  10
  11 static const struct fb_videomode hdmi_mode [] = {
  12         //name                          refresh         xres    yres    pixclock        h_bp    h_fp    v_bp    v_fp    h_pw    v_pw    polariry        PorI    flag(used for vic)
  13 //{     "640x480p@60Hz",        60,                     640,    480,    25175000,       48,             16,             33,             10,             96,             2,              0,                      0,              1       },
  14 //{     "720x480i@60Hz",        60,                     720,    480,    27000000,       114,    38,             15,             4,              124,    3,              0,                      1,              6       },
  15 //{     "720x576i@50Hz",        50,                     720,    576,    27000000,       138,    24,             19,             2,              126,    3,              0,                      1,              21      },
  16 {       "720x480p@60Hz",        60,                     720,    480,    27000000,       60,             16,             30,             9,              62,             6,              0,                      0,              2       },
  17 {       "720x576p@50Hz",        50,                     720,    576,    27000000,       68,             12,             39,             5,              64,             5,              0,                      0,              17      },
  18 //{     "1280x720p@24Hz",       24,                     1280,   720,    59400000,       220,    1760,   20,             5,              40,             5,              FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,                   0,              60      },
  19 //{     "1280x720p@25Hz",       25,                     1280,   720,    74250000,       220,    2420,   20,             5,              40,             5,              FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,                   0,              61      },
  20 //{     "1280x720p@30Hz",       30,                     1280,   720,    74250000,       220,    1760,   20,             5,              40,             5,              FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,                   0,              62      },
  21 {       "1280x720p@50Hz",       50,                     1280,   720,    74250000,       220,    440,    20,             5,              40,             5,              FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,                   0,              19      },
  22 {       "1280x720p@60Hz",       60,                     1280,   720,    74250000,       220,    110,    20,             5,              40,             5,              FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,                   0,              4       },
  23 //{     "1920x1080p@24Hz",      24,                     1920,   1080,   74250000,       148,    638,    36,             4,              44,             5,              FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,                   0,              32      },
  24 //{     "1920x1080p@25Hz",      25,                     1920,   1080,   74250000,       148,    528,    36,             4,              44,             5,              FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,                   0,              33      },
  25 //{     "1920x1080p@30Hz",      30,                     1920,   1080,   74250000,       148,    88,             36,             4,              44,             5,              FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,                   0,              34      },
  26 //{     "1920x1080i@50Hz_2",50,                 1920,   1080,   72000000,       184,    32,             57,             23,             168,    5,              FB_SYNC_HOR_HIGH_ACT,                   1,              39      },
  27 //{     "1920x1080i@50Hz",      50,                     1920,   1080,   74250000,       148,    528,    15,             2,              44,             5,              FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,                   1,              20      },
  28 //{     "1920x1080i@60Hz",      60,                     1920,   1080,   74250000,       148,    88,             15,             2,              44,             5,              FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,                   1,              5       },
  29 {       "1920x1080p@50Hz",      50,                     1920,   1080,   148500000,      148,    528,    36,             4,              44,             5,              FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,                   0,              31      },
  30 {       "1920x1080p@60Hz",      60,                     1920,   1080,   148500000,      148,    88,             36,             4,              44,             5,              FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,                   0,              16      },
  31 /*
  32 {       "1440x288p@50Hz",       50,                     720,    480,    27000000,       138,    24,             19,             2,              126,    3,              0,                      0,              23      },
  33 {       "2880x576i@50Hz",       50,                     1440,   240,    54000000,       276,    48,             19,             2,              252,    3,              0,                      1,              25      },
  34 {       "2880x288p@50Hz",       50,                     2880,   480,    54000000,       276,    48,             19,             3,              252,    3,              0,                      0,              27      },
  35 {       "1440x576p@50Hz",       50,                     2880,   480,    54000000,       136,    24,             39,             5,              128,    5,              0,                      0,              29      },
  36 {       "2880x576p@50Hz",       50,                     1920,   1080,   108000000,      272,    48,             39,             5,              256,    5,              0,                      0,              37      },
  37 {       "1440x240p@60Hz",       60,                     1440,   240,    27000000,       114,    38,             15,             4,              124,    3,              0,                      0,              8       },
  38 {       "2880x480i@60Hz",       60,                     2880,   480,    54000000,       228,    76,             15,             4,              248,    3,              0,                      1,              10      },
  39 {       "2880x480p@60Hz",       60,                     2880,   480,    54000000,       228,    76,             15,             4,              248,    3,              0,                      0,              12      },
  40 {       "1440x480p@60Hz",       60,                     1440,   480,    54000000,       120,    32,             30,             9,              124,    6,              0,                      0,              14      },
  41 {       "2880x480p@60Hz",       60,                     2880,   480,    54000000,       240,    64,             30,             9,              248,    6,              0,                      0,              35      },
  42
  43 {       "1920x1080i@100Hz",     100,            1920,   1080,   148500000,      148,    528,    15,             2,              44,             5,              1,                      1,              40      },
  44 {       "1280x720p@100Hz",      100,            1280,   720,    148500000,      220,    440,    20,             5,              40,             5,              1,                      0,              41      },
  45 {       "720x576p@100Hz",       100,            720,    576,    54000000,       68,             12,             39,             5,              64,             5,              0,                      0,              42      },
  46 {       "1440x576i@100Hz",      100,            1440,   576,    54000000,       138,    24,             19,             2,              12,             3,              0,                      1,              44      },
  47 {       "1920x1080p@100Hz",     100,            1920,   1080,   297000000,      148,    528,    36,             4,              44,             5,              1,                      0,              64      },
  48
  49 {       "1920x1080i@120Hz",     120,            1920,   1080,   148500000,      148,    88,             15,             2,              44,             5,              1,                      1,              46      },
  50 {       "1280x720p@120Hz",      120,            1280,   720,    148500000,      220,    110,    20,             5,              40,             5,              1,                      0,              47      },
  51 {       "720x480p@120Hz",       120,            720,    480,    54000000,       60,             16,             30,             9,              62,             6,              0,                      0,              48      },
  52 {       "1440x480i@120Hz",      120,            1440,   480,    54000000,       114,    38,             15,             4,              12,             3,              0,                      1,              50      },
  53 {       "1920x1080p@120Hz",     120,            1920,   1080,   297000000,      148,    88,             36,             4,              44,             5,              1,                      0,              63      },
  54
  55 {       "720x576p@200Hz",       200,            720,    576,    108000000,      68,             12,             39,             5,              64,             5,              0,                      0,              52      },
  56 {       "1440x576i@200Hz",      200,            1920,   1080,   108000000,      138,    24,             19,             2,              12,             3,              0,                      1,              54      },
  57
  58 {       "720x480p@240Hz",       240,            720,    480,    108000000,      60,             16,             30,             9,              62,             6,              0,                      0,              56      },
  59 {       "1440x480i@240Hz",      240,            1440,   480,    108000000,      114,    38,             15,             4,              12,             3,              0,                      1,              58      },
  60 */
  61
  62 };
  63
  64 void hdmi_init_lcdc(struct rk29fb_screen *screen, struct rk29lcd_info *lcd_info)
  65 {
  66         hdmi_set_info(screen, HDMI_VIDEO_DEFAULT_MODE);
  67 }
  68
  69 int hdmi_set_info(struct rk29fb_screen *screen, unsigned int vic)
  70 {
  71     int i;
  72
  73     if(screen == NULL)
  74         return -1;
  75
  76     if(vic == 0)
  77         vic = HDMI_VIDEO_DEFAULT_MODE;
  78
  79     for(i = 0; i < ARRAY_SIZE(hdmi_mode); i++)
  80     {
  81         if(hdmi_mode[i].flag == vic)
  82                 break;
  83     }
  84     if(i == ARRAY_SIZE(hdmi_mode))
  85         return -1;
  86
  87     memset(screen, 0, sizeof(struct rk29fb_screen));
  88
  89     /* screen type & face */
  90     screen->type = OUT_TYPE;
  91     screen->face = OUT_FACE;
  92
  93     /* Screen size */
  94     screen->x_res = hdmi_mode[i].xres;
  95     screen->y_res = hdmi_mode[i].yres;
  96
  97     /* Timing */
  98     screen->pixclock = hdmi_mode[i].pixclock;
  99         screen->lcdc_aclk = LCD_ACLK;
 100         screen->left_margin = hdmi_mode[i].left_margin;
 101         screen->right_margin = hdmi_mode[i].right_margin;
 102         screen->hsync_len = hdmi_mode[i].hsync_len;
 103         screen->upper_margin = hdmi_mode[i].upper_margin;
 104         screen->lower_margin = hdmi_mode[i].lower_margin;
 105         screen->vsync_len = hdmi_mode[i].vsync_len;
 106
 107         /* Pin polarity */
 108         if(FB_SYNC_HOR_HIGH_ACT & hdmi_mode[i].sync)
 109                 screen->pin_hsync = 1;
 110         else
 111                 screen->pin_hsync = 0;
 112         if(FB_SYNC_VERT_HIGH_ACT & hdmi_mode[i].sync)
 113                 screen->pin_vsync = 1;
 114         else
 115                 screen->pin_vsync = 0;
 116         screen->pin_den = 0;
 117         screen->pin_dclk = DCLK_POL;
 118
 119         /* Swap rule */
 120     screen->swap_rb = SWAP_RB;
 121     screen->swap_rg = 0;
 122     screen->swap_gb = 0;
 123     screen->swap_delta = 0;
 124     screen->swap_dumy = 0;
 125
 126     /* Operation function*/
 127     screen->init = NULL;
 128     screen->standby = NULL;
 129
 130     return 0;
 131 }
 132
 133 static void hdmi_show_sink_info(struct hdmi *hdmi)
 134 {
 135         struct list_head *pos, *head = &hdmi->edid.modelist;
 136         struct fb_modelist *modelist;
 137         struct fb_videomode *m;
 138         int i;
 139         struct hdmi_audio *audio;
 140
 141         hdmi_dbg(hdmi->dev, "******** Show Sink Info ********\n");
 142         hdmi_dbg(hdmi->dev, "Support video mode: \n");
 143         list_for_each(pos, head) {
 144                 modelist = list_entry(pos, struct fb_modelist, list);
 145                 m = &modelist->mode;
 146                 hdmi_dbg(hdmi->dev, "   %s.\n", m->name);
 147         }
 148
 149         for(i = 0; i < hdmi->edid.audio_num; i++)
 150         {
 151                 audio = &(hdmi->edid.audio[i]);
 152                 switch(audio->type)
 153                 {
 154                         case HDMI_AUDIO_LPCM:
 155                                 hdmi_dbg(hdmi->dev, "Support audio type: LPCM\n");
 156                                 break;
 157                         case HDMI_AUDIO_AC3:
 158                                 hdmi_dbg(hdmi->dev, "Support audio type: AC3\n");
 159                                 break;
 160                         case HDMI_AUDIO_MPEG1:
 161                                 hdmi_dbg(hdmi->dev, "Support audio type: MPEG1\n");
 162                                 break;
 163                         case HDMI_AUDIO_MP3:
 164                                 hdmi_dbg(hdmi->dev, "Support audio type: MP3\n");
 165                                 break;
 166                         case HDMI_AUDIO_MPEG2:
 167                                 hdmi_dbg(hdmi->dev, "Support audio type: MPEG2\n");
 168                                 break;
 169                         case HDMI_AUDIO_AAC_LC:
 170                                 hdmi_dbg(hdmi->dev, "Support audio type: AAC\n");
 171                                 break;
 172                         case HDMI_AUDIO_DTS:
 173                                 hdmi_dbg(hdmi->dev, "Support audio type: DTS\n");
 174                                 break;
 175                         case HDMI_AUDIO_ATARC:
 176                                 hdmi_dbg(hdmi->dev, "Support audio type: ATARC\n");
 177                                 break;
 178                         case HDMI_AUDIO_DSD:
 179                                 hdmi_dbg(hdmi->dev, "Support audio type: DSD\n");
 180                                 break;
 181                         case HDMI_AUDIO_E_AC3:
 182                                 hdmi_dbg(hdmi->dev, "Support audio type: E-AC3\n");
 183                                 break;
 184                         case HDMI_AUDIO_DTS_HD:
 185                                 hdmi_dbg(hdmi->dev, "Support audio type: DTS-HD\n");
 186                                 break;
 187                         case HDMI_AUDIO_MLP:
 188                                 hdmi_dbg(hdmi->dev, "Support audio type: MLP\n");
 189                                 break;
 190                         case HDMI_AUDIO_DST:
 191                                 hdmi_dbg(hdmi->dev, "Support audio type: DST\n");
 192                                 break;
 193                         case HDMI_AUDIO_WMA_PRO:
 194                                 hdmi_dbg(hdmi->dev, "Support audio type: WMP-PRO\n");
 195                                 break;
 196                         default:
 197                                 hdmi_dbg(hdmi->dev, "Support audio type: Unkown\n");
 198                                 break;
 199                 }
 200
 201                 hdmi_dbg(hdmi->dev, "Support audio sample rate: \n");
 202                 if(audio->rate & HDMI_AUDIO_FS_32000)
 203                         hdmi_dbg(hdmi->dev, "   32000\n");
 204                 if(audio->rate & HDMI_AUDIO_FS_44100)
 205                         hdmi_dbg(hdmi->dev, "   44100\n");
 206                 if(audio->rate & HDMI_AUDIO_FS_48000)
 207                         hdmi_dbg(hdmi->dev, "   48000\n");
 208                 if(audio->rate & HDMI_AUDIO_FS_88200)
 209                         hdmi_dbg(hdmi->dev, "   88200\n");
 210                 if(audio->rate & HDMI_AUDIO_FS_96000)
 211                         hdmi_dbg(hdmi->dev, "   96000\n");
 212                 if(audio->rate & HDMI_AUDIO_FS_176400)
 213                         hdmi_dbg(hdmi->dev, "   176400\n");
 214                 if(audio->rate & HDMI_AUDIO_FS_192000)
 215                         hdmi_dbg(hdmi->dev, "   192000\n");
 216
 217                 hdmi_dbg(hdmi->dev, "Support audio word lenght: \n");
 218                 if(audio->rate & HDMI_AUDIO_WORD_LENGTH_16bit)
 219                         hdmi_dbg(hdmi->dev, "   16bit\n");
 220                 if(audio->rate & HDMI_AUDIO_WORD_LENGTH_20bit)
 221                         hdmi_dbg(hdmi->dev, "   20bit\n");
 222                 if(audio->rate & HDMI_AUDIO_WORD_LENGTH_24bit)
 223                         hdmi_dbg(hdmi->dev, "   24bit\n");
 224         }
 225         hdmi_dbg(hdmi->dev, "******** Show Sink Info ********\n");
 226 }
 227
 228 /**
 229  * hdmi_ouputmode_select - select hdmi transmitter output mode: hdmi or dvi?
 230  * @hdmi: handle of hdmi
 231  * @edid_ok: get EDID data success or not, HDMI_ERROR_SUCESS means success.
 232  */
 233 int hdmi_ouputmode_select(struct hdmi *hdmi, int edid_ok)
 234 {
 235         struct list_head *head = &hdmi->edid.modelist;
 236         struct fb_monspecs      *specs = hdmi->edid.specs;
 237         struct fb_videomode *modedb = NULL;
 238         int i, pixclock;
 239
 240         if(edid_ok != HDMI_ERROR_SUCESS) {
 241                 dev_err(hdmi->dev, "warning: EDID error, assume sink as HDMI !!!!");
 242                 hdmi->edid.sink_hdmi = 1;
 243         }
 244
 245         if(edid_ok != HDMI_ERROR_SUCESS) {
 246                 hdmi->edid.ycbcr444 = 0;
 247                 hdmi->edid.ycbcr422 = 0;
 248                 hdmi->autoconfig = HDMI_DISABLE;
 249         }
 250         if(head->next == head) {
 251                 dev_info(hdmi->dev, "warning: no CEA video mode parsed from EDID !!!!");
 252                 // If EDID get error, list all system supported mode.
 253                 // If output mode is set to DVI and EDID is ok, check
 254                 // the output timing.
 255
 256                 if(hdmi->edid.sink_hdmi == 0 && specs && specs->modedb_len) {
 257                         /* Get max resolution timing */
 258                         modedb = &specs->modedb[0];
 259                         for (i = 0; i < specs->modedb_len; i++) {
 260                                 if(specs->modedb[i].xres > modedb->xres)
 261                                         modedb = &specs->modedb[i];
 262                                 else if(specs->modedb[i].yres > modedb->yres)
 263                                         modedb = &specs->modedb[i];
 264                         }
 265                         // For some monitor, the max pixclock read from EDID is smaller
 266                         // than the clock of max resolution mode supported. We fix it.
 267                         pixclock = PICOS2KHZ(modedb->pixclock);
 268                         pixclock /= 250;
 269                         pixclock *= 250;
 270                         pixclock *= 1000;
 271                         if(pixclock == 148250000)
 272                                 pixclock = 148500000;
 273                         if(pixclock > specs->dclkmax)
 274                                 specs->dclkmax = pixclock;
 275                 }
 276
 277                 for(i = 0; i < ARRAY_SIZE(hdmi_mode); i++) {
 278                         if(modedb) {
 279                                 if( (hdmi_mode[i].pixclock < specs->dclkmin) ||
 280                                         (hdmi_mode[i].pixclock > specs->dclkmax) ||
 281                                         (hdmi_mode[i].refresh < specs->vfmin) ||
 282                                         (hdmi_mode[i].refresh > specs->vfmax) ||
 283                                         (hdmi_mode[i].xres > modedb->xres) ||
 284                                         (hdmi_mode[i].yres > modedb->yres) )
 285                                 continue;
 286                         }
 287                         hdmi_add_videomode(&hdmi_mode[i], head);
 288                 }
 289         }
 290
 291         #ifdef HDMI_DEBUG
 292         hdmi_show_sink_info(hdmi);
 293         #endif
 294         return HDMI_ERROR_SUCESS;
 295 }
 296 /**
 297  * hdmi_videomode_compare - compare 2 videomodes
 298  * @mode1: first videomode
 299  * @mode2: second videomode
 300  *
 301  * RETURNS:
 302  * 1 if mode1 > mode2, 0 if mode1 = mode2, -1 mode1 < mode2
 303  */
 304 static int hdmi_videomode_compare(const struct fb_videomode *mode1,
 305                      const struct fb_videomode *mode2)
 306 {
 307         if(mode1->xres > mode2->xres)
 308                 return 1;
 309         else if(mode1->xres == mode2->xres)
 310         {
 311                 if(mode1->yres > mode2->yres)
 312                         return 1;
 313                 else if(mode1->yres == mode2->yres)
 314                 {
 315                         if(mode1->pixclock > mode2->pixclock)
 316                                 return 1;
 317                         else if(mode1->pixclock == mode2->pixclock)
 318                         {
 319                                 if(mode1->refresh > mode2->refresh)
 320                                         return 1;
 321                                 else if(mode1->refresh == mode2->refresh)
 322                                         return 0;
 323                         }
 324                 }
 325         }
 326         return -1;
 327 }
 328 /**
 329  * hdmi_add_videomode: adds videomode entry to modelist
 330  * @mode: videomode to add
 331  * @head: struct list_head of modelist
 332  *
 333  * NOTES:
 334  * Will only add unmatched mode entries
 335  */
 336 int hdmi_add_videomode(const struct fb_videomode *mode, struct list_head *head)
 337 {
 338         struct list_head *pos;
 339         struct fb_modelist *modelist, *modelist_new;
 340         struct fb_videomode *m;
 341         int i, found = 0;
 342
 343         for(i = 0; i < ARRAY_SIZE(hdmi_mode); i++)
 344     {
 345         m =(struct fb_videomode*) &hdmi_mode[i];
 346         if (fb_mode_is_equal(m, mode)) {
 347                         found = 1;
 348                         break;
 349                 }
 350     }
 351
 352         if (found) {
 353                 list_for_each(pos, head) {
 354                         modelist = list_entry(pos, struct fb_modelist, list);
 355                         m = &modelist->mode;
 356                         if (fb_mode_is_equal(m, mode)) {
 357                         // m == mode
 358                                 return 0;
 359                         }
 360                         else
 361                         {
 362                                 if(hdmi_videomode_compare(m, mode) == -1) {
 363                                         break;
 364                                 }
 365                         }
 366                 }
 367
 368                 modelist_new = kmalloc(sizeof(struct fb_modelist),
 369                                   GFP_KERNEL);
 370                 if (!modelist_new)
 371                         return -ENOMEM;
 372                 modelist_new->mode = hdmi_mode[i];
 373                 list_add_tail(&modelist_new->list, pos);
 374         }
 375
 376         return 0;
 377 }
 378
 379 /**
 380  * hdmi_videomode_to_vic: transverse video mode to vic
 381  * @vmode: videomode to transverse
 382  *
 383  */
 384 int hdmi_videomode_to_vic(struct fb_videomode *vmode)
 385 {
 386         unsigned char vic = 0;
 387         int i = 0;
 388
 389         for(i = 0; i < ARRAY_SIZE(hdmi_mode); i++)
 390         {
 391                 if(     vmode->vmode == hdmi_mode[i].vmode &&
 392                         vmode->refresh == hdmi_mode[i].refresh &&
 393                         vmode->xres == hdmi_mode[i].xres &&
 394                         vmode->left_margin == hdmi_mode[i].left_margin &&
 395                         vmode->right_margin == hdmi_mode[i].right_margin &&
 396                         vmode->upper_margin == hdmi_mode[i].upper_margin &&
 397                         vmode->lower_margin == hdmi_mode[i].lower_margin &&
 398                         vmode->hsync_len == hdmi_mode[i].hsync_len &&
 399                         vmode->vsync_len == hdmi_mode[i].vsync_len)
 400                 {
 401                         if( (vmode->vmode == FB_VMODE_NONINTERLACED && vmode->yres == hdmi_mode[i].yres) ||
 402                                 (vmode->vmode == FB_VMODE_INTERLACED && vmode->yres == hdmi_mode[i].yres/2))
 403                         {
 404                                 vic = hdmi_mode[i].flag;
 405                                 break;
 406                         }
 407                 }
 408         }
 409         return vic;
 410 }
 411
 412 /**
 413  * hdmi_vic_to_videomode: transverse vic mode to video mode
 414  * @vmode: vic to transverse
 415  *
 416  */
 417 const struct fb_videomode* hdmi_vic_to_videomode(int vic)
 418 {
 419         int i;
 420
 421         if(vic == 0)
 422                 return NULL;
 423
 424         for(i = 0; i < ARRAY_SIZE(hdmi_mode); i++)
 425         {
 426                 if(hdmi_mode[i].flag == vic)
 427                         return &hdmi_mode[i];
 428         }
 429         return NULL;
 430 }
 431
 432 /**
 433  * hdmi_find_best_mode: find the video mode nearest to input vic
 434  * @hdmi:
 435  * @vic: input vic
 436  *
 437  * NOTES:
 438  * If vic is zero, return the high resolution video mode vic.
 439  */
 440 int hdmi_find_best_mode(struct hdmi* hdmi, int vic)
 441 {
 442         struct list_head *pos, *head = &hdmi->edid.modelist;
 443         struct fb_modelist *modelist;
 444         struct fb_videomode *m = NULL;
 445         int found = 0;
 446
 447         if(vic)
 448         {
 449                 list_for_each(pos, head) {
 450                         modelist = list_entry(pos, struct fb_modelist, list);
 451                         m = &modelist->mode;
 452                         if(m->flag == vic)
 453                         {
 454                                 found = 1;
 455                                 break;
 456                         }
 457                 }
 458         }
 459         if( (vic == 0 || found == 0) && head->next != head)
 460         {
 461                 modelist = list_entry(head->next, struct fb_modelist, list);
 462                 m = &modelist->mode;
 463         }
 464         if(m != NULL)
 465                 return m->flag;
 466         else
 467                 return 0;
 468 }
 469
 470 const char *hdmi_get_video_mode_name(unsigned char vic)
 471 {
 472         int i;
 473
 474         for(i = 0; i < ARRAY_SIZE(hdmi_mode); i++)
 475         {
 476                 if(vic == hdmi_mode[i].flag)
 477                         break;
 478         }
 479         if(i == ARRAY_SIZE(hdmi_mode))
 480                 return NULL;
 481         else
 482                 return hdmi_mode[i].name;
 483 }
 484
 485 /**
 486  * hdmi_switch_fb: switch lcdc mode to required video mode
 487  * @hdmi:
 488  * @type:
 489  *
 490  * NOTES:
 491  *
 492  */
 493 int hdmi_switch_fb(struct hdmi *hdmi, int vic)
 494 {
 495         int rc = 0;
 496         rk_screen *screen;
 497
 498
 499         screen =  kzalloc(sizeof(struct rk29fb_screen), GFP_KERNEL);
 500         if(screen == NULL)
 501                 return -1;
 502
 503         if(hdmi->vic == 0)
 504                 hdmi->vic = HDMI_VIDEO_DEFAULT_MODE;
 505
 506
 507         rc = hdmi_set_info(screen, hdmi->vic);
 508
 509         if(rc == 0) {
 510                 rk_fb_switch_screen(screen, 1, hdmi->lcdc->id);
 511                 rk_fb_disp_scale(hdmi->xscale, hdmi->yscale, hdmi->lcdc->id);
 512         }
 513
 514         kfree(screen);
 515
 516         return rc;
 517 }
 518
 519 /**
 520  * hdmi_get_status: get hdmi hotplug status
 521  *
 522  * NOTES:
 523  *
 524  */
 525 int hdmi_get_hotplug(void)
 526 {
 527         if(hdmi)
 528                 return hdmi->hotplug;
 529         else
 530                 return HDMI_HPD_REMOVED;
 531 }