git.oblomov.eu Git - linux-2.6/blob - drivers/media/video/cx18/cx18-av-core.c

   1 /*
   2  *  cx18 ADEC audio functions
   3  *
   4  *  Derived from cx25840-core.c
   5  *
   6  *  Copyright (C) 2007  Hans Verkuil <hverkuil@xs4all.nl>
   7  *  Copyright (C) 2008  Andy Walls <awalls@radix.net>
   8  *
   9  *  This program is free software; you can redistribute it and/or
  10  *  modify it under the terms of the GNU General Public License
  11  *  as published by the Free Software Foundation; either version 2
  12  *  of the License, or (at your option) any later version.
  13  *
  14  *  This program is distributed in the hope that it will be useful,
  15  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  *  GNU General Public License for more details.
  18  *
  19  *  You should have received a copy of the GNU General Public License
  20  *  along with this program; if not, write to the Free Software
  21  *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  22  *  02110-1301, USA.
  23  */
  24
  25 #include "cx18-driver.h"
  26 #include "cx18-io.h"
  27
  28 int cx18_av_write(struct cx18 *cx, u16 addr, u8 value)
  29 {
  30         u32 reg = 0xc40000 + (addr & ~3);
  31         u32 mask = 0xff;
  32         int shift = (addr & 3) * 8;
  33         u32 x = cx18_read_reg(cx, reg);
  34
  35         x = (x & ~(mask << shift)) | ((u32)value << shift);
  36         cx18_write_reg(cx, x, reg);
  37         return 0;
  38 }
  39
  40 int cx18_av_write_expect(struct cx18 *cx, u16 addr, u8 value, u8 eval, u8 mask)
  41 {
  42         u32 reg = 0xc40000 + (addr & ~3);
  43         int shift = (addr & 3) * 8;
  44         u32 x = cx18_read_reg(cx, reg);
  45
  46         x = (x & ~((u32)0xff << shift)) | ((u32)value << shift);
  47         cx18_write_reg_expect(cx, x, reg,
  48                                 ((u32)eval << shift), ((u32)mask << shift));
  49         return 0;
  50 }
  51
  52 int cx18_av_write4(struct cx18 *cx, u16 addr, u32 value)
  53 {
  54         cx18_write_reg(cx, value, 0xc40000 + addr);
  55         return 0;
  56 }
  57
  58 int
  59 cx18_av_write4_expect(struct cx18 *cx, u16 addr, u32 value, u32 eval, u32 mask)
  60 {
  61         cx18_write_reg_expect(cx, value, 0xc40000 + addr, eval, mask);
  62         return 0;
  63 }
  64
  65 int cx18_av_write4_noretry(struct cx18 *cx, u16 addr, u32 value)
  66 {
  67         cx18_write_reg_noretry(cx, value, 0xc40000 + addr);
  68         return 0;
  69 }
  70
  71 u8 cx18_av_read(struct cx18 *cx, u16 addr)
  72 {
  73         u32 x = cx18_read_reg(cx, 0xc40000 + (addr & ~3));
  74         int shift = (addr & 3) * 8;
  75
  76         return (x >> shift) & 0xff;
  77 }
  78
  79 u32 cx18_av_read4(struct cx18 *cx, u16 addr)
  80 {
  81         return cx18_read_reg(cx, 0xc40000 + addr);
  82 }
  83
  84 int cx18_av_and_or(struct cx18 *cx, u16 addr, unsigned and_mask,
  85                    u8 or_value)
  86 {
  87         return cx18_av_write(cx, addr,
  88                              (cx18_av_read(cx, addr) & and_mask) |
  89                              or_value);
  90 }
  91
  92 int cx18_av_and_or4(struct cx18 *cx, u16 addr, u32 and_mask,
  93                    u32 or_value)
  94 {
  95         return cx18_av_write4(cx, addr,
  96                              (cx18_av_read4(cx, addr) & and_mask) |
  97                              or_value);
  98 }
  99
 100 /* ----------------------------------------------------------------------- */
 101
 102 static int set_input(struct cx18 *cx, enum cx18_av_video_input vid_input,
 103                                         enum cx18_av_audio_input aud_input);
 104 static void log_audio_status(struct cx18 *cx);
 105 static void log_video_status(struct cx18 *cx);
 106
 107 /* ----------------------------------------------------------------------- */
 108
 109 static void cx18_av_initialize(struct cx18 *cx)
 110 {
 111         struct cx18_av_state *state = &cx->av_state;
 112         u32 v;
 113
 114         cx18_av_loadfw(cx);
 115         /* Stop 8051 code execution */
 116         cx18_av_write4_expect(cx, CXADEC_DL_CTL, 0x03000000,
 117                                                  0x03000000, 0x13000000);
 118
 119         /* initallize the PLL by toggling sleep bit */
 120         v = cx18_av_read4(cx, CXADEC_HOST_REG1);
 121         /* enable sleep mode - register appears to be read only... */
 122         cx18_av_write4_expect(cx, CXADEC_HOST_REG1, v | 1, v, 0xfffe);
 123         /* disable sleep mode */
 124         cx18_av_write4_expect(cx, CXADEC_HOST_REG1, v & 0xfffe,
 125                                                     v & 0xfffe, 0xffff);
 126
 127         /* initialize DLLs */
 128         v = cx18_av_read4(cx, CXADEC_DLL1_DIAG_CTRL) & 0xE1FFFEFF;
 129         /* disable FLD */
 130         cx18_av_write4(cx, CXADEC_DLL1_DIAG_CTRL, v);
 131         /* enable FLD */
 132         cx18_av_write4(cx, CXADEC_DLL1_DIAG_CTRL, v | 0x10000100);
 133
 134         v = cx18_av_read4(cx, CXADEC_DLL2_DIAG_CTRL) & 0xE1FFFEFF;
 135         /* disable FLD */
 136         cx18_av_write4(cx, CXADEC_DLL2_DIAG_CTRL, v);
 137         /* enable FLD */
 138         cx18_av_write4(cx, CXADEC_DLL2_DIAG_CTRL, v | 0x06000100);
 139
 140         /* set analog bias currents. Set Vreg to 1.20V. */
 141         cx18_av_write4(cx, CXADEC_AFE_DIAG_CTRL1, 0x000A1802);
 142
 143         v = cx18_av_read4(cx, CXADEC_AFE_DIAG_CTRL3) | 1;
 144         /* enable TUNE_FIL_RST */
 145         cx18_av_write4_expect(cx, CXADEC_AFE_DIAG_CTRL3, v, v, 0x03009F0F);
 146         /* disable TUNE_FIL_RST */
 147         cx18_av_write4_expect(cx, CXADEC_AFE_DIAG_CTRL3,
 148                               v & 0xFFFFFFFE, v & 0xFFFFFFFE, 0x03009F0F);
 149
 150         /* enable 656 output */
 151         cx18_av_and_or4(cx, CXADEC_PIN_CTRL1, ~0, 0x040C00);
 152
 153         /* video output drive strength */
 154         cx18_av_and_or4(cx, CXADEC_PIN_CTRL2, ~0, 0x2);
 155
 156         /* reset video */
 157         cx18_av_write4(cx, CXADEC_SOFT_RST_CTRL, 0x8000);
 158         cx18_av_write4(cx, CXADEC_SOFT_RST_CTRL, 0);
 159
 160         /* set video to auto-detect */
 161         /* Clear bits 11-12 to enable slow locking mode.  Set autodetect mode */
 162         /* set the comb notch = 1 */
 163         cx18_av_and_or4(cx, CXADEC_MODE_CTRL, 0xFFF7E7F0, 0x02040800);
 164
 165         /* Enable wtw_en in CRUSH_CTRL (Set bit 22) */
 166         /* Enable maj_sel in CRUSH_CTRL (Set bit 20) */
 167         cx18_av_and_or4(cx, CXADEC_CRUSH_CTRL, ~0, 0x00500000);
 168
 169         /* Set VGA_TRACK_RANGE to 0x20 */
 170         cx18_av_and_or4(cx, CXADEC_DFE_CTRL2, 0xFFFF00FF, 0x00002000);
 171
 172         /* Enable VBI capture */
 173         cx18_av_write4(cx, CXADEC_OUT_CTRL1, 0x4010253F);
 174         /* cx18_av_write4(cx, CXADEC_OUT_CTRL1, 0x4010253E); */
 175
 176         /* Set the video input.
 177            The setting in MODE_CTRL gets lost when we do the above setup */
 178         /* EncSetSignalStd(dwDevNum, pEnc->dwSigStd); */
 179         /* EncSetVideoInput(dwDevNum, pEnc->VidIndSelection); */
 180
 181         v = cx18_av_read4(cx, CXADEC_AFE_CTRL);
 182         v &= 0xFFFBFFFF;            /* turn OFF bit 18 for droop_comp_ch1 */
 183         v &= 0xFFFF7FFF;            /* turn OFF bit 9 for clamp_sel_ch1 */
 184         v &= 0xFFFFFFFE;            /* turn OFF bit 0 for 12db_ch1 */
 185         /* v |= 0x00000001;*/            /* turn ON bit 0 for 12db_ch1 */
 186         cx18_av_write4(cx, CXADEC_AFE_CTRL, v);
 187
 188 /*      if(dwEnable && dw3DCombAvailable) { */
 189 /*              CxDevWrReg(CXADEC_SRC_COMB_CFG, 0x7728021F); */
 190 /*    } else { */
 191 /*              CxDevWrReg(CXADEC_SRC_COMB_CFG, 0x6628021F); */
 192 /*    } */
 193         cx18_av_write4(cx, CXADEC_SRC_COMB_CFG, 0x6628021F);
 194         state->default_volume = 228 - cx18_av_read(cx, 0x8d4);
 195         state->default_volume = ((state->default_volume / 2) + 23) << 9;
 196 }
 197
 198 /* ----------------------------------------------------------------------- */
 199
 200 void cx18_av_std_setup(struct cx18 *cx)
 201 {
 202         struct cx18_av_state *state = &cx->av_state;
 203         v4l2_std_id std = state->std;
 204         int hblank, hactive, burst, vblank, vactive, sc;
 205         int vblank656, src_decimation;
 206         int luma_lpf, uv_lpf, comb;
 207         u32 pll_int, pll_frac, pll_post;
 208
 209         /* datasheet startup, step 8d */
 210         if (std & ~V4L2_STD_NTSC)
 211                 cx18_av_write(cx, 0x49f, 0x11);
 212         else
 213                 cx18_av_write(cx, 0x49f, 0x14);
 214
 215         if (std & V4L2_STD_625_50) {
 216                 hblank = 132;
 217                 hactive = 720;
 218                 burst = 93;
 219                 vblank = 36;
 220                 vactive = 580;
 221                 vblank656 = 40;
 222                 src_decimation = 0x21f;
 223
 224                 luma_lpf = 2;
 225                 if (std & V4L2_STD_PAL) {
 226                         uv_lpf = 1;
 227                         comb = 0x20;
 228                         sc = 688739;
 229                 } else if (std == V4L2_STD_PAL_Nc) {
 230                         uv_lpf = 1;
 231                         comb = 0x20;
 232                         sc = 556453;
 233                 } else { /* SECAM */
 234                         uv_lpf = 0;
 235                         comb = 0;
 236                         sc = 672351;
 237                 }
 238         } else {
 239                 hactive = 720;
 240                 hblank = 122;
 241                 vactive = 487;
 242                 luma_lpf = 1;
 243                 uv_lpf = 1;
 244                 vblank = 26;
 245                 vblank656 = 26;
 246
 247                 src_decimation = 0x21f;
 248                 if (std == V4L2_STD_PAL_60) {
 249                         burst = 0x5b;
 250                         luma_lpf = 2;
 251                         comb = 0x20;
 252                         sc = 688739;
 253                 } else if (std == V4L2_STD_PAL_M) {
 254                         burst = 0x61;
 255                         comb = 0x20;
 256                         sc = 555452;
 257                 } else {
 258                         burst = 0x5b;
 259                         comb = 0x66;
 260                         sc = 556063;
 261                 }
 262         }
 263
 264         /* DEBUG: Displays configured PLL frequency */
 265         pll_int = cx18_av_read(cx, 0x108);
 266         pll_frac = cx18_av_read4(cx, 0x10c) & 0x1ffffff;
 267         pll_post = cx18_av_read(cx, 0x109);
 268         CX18_DEBUG_INFO("PLL regs = int: %u, frac: %u, post: %u\n",
 269                         pll_int, pll_frac, pll_post);
 270
 271         if (pll_post) {
 272                 int fin, fsc, pll;
 273
 274                 pll = (28636360L * ((((u64)pll_int) << 25) + pll_frac)) >> 25;
 275                 pll /= pll_post;
 276                 CX18_DEBUG_INFO("PLL = %d.%06d MHz\n",
 277                                         pll / 1000000, pll % 1000000);
 278                 CX18_DEBUG_INFO("PLL/8 = %d.%06d MHz\n",
 279                                         pll / 8000000, (pll / 8) % 1000000);
 280
 281                 fin = ((u64)src_decimation * pll) >> 12;
 282                 CX18_DEBUG_INFO("ADC Sampling freq = %d.%06d MHz\n",
 283                                         fin / 1000000, fin % 1000000);
 284
 285                 fsc = (((u64)sc) * pll) >> 24L;
 286                 CX18_DEBUG_INFO("Chroma sub-carrier freq = %d.%06d MHz\n",
 287                                         fsc / 1000000, fsc % 1000000);
 288
 289                 CX18_DEBUG_INFO("hblank %i, hactive %i, "
 290                         "vblank %i , vactive %i, vblank656 %i, src_dec %i,"
 291                         "burst 0x%02x, luma_lpf %i, uv_lpf %i, comb 0x%02x,"
 292                         " sc 0x%06x\n",
 293                         hblank, hactive, vblank, vactive, vblank656,
 294                         src_decimation, burst, luma_lpf, uv_lpf, comb, sc);
 295         }
 296
 297         /* Sets horizontal blanking delay and active lines */
 298         cx18_av_write(cx, 0x470, hblank);
 299         cx18_av_write(cx, 0x471, 0xff & (((hblank >> 8) & 0x3) |
 300                                                 (hactive << 4)));
 301         cx18_av_write(cx, 0x472, hactive >> 4);
 302
 303         /* Sets burst gate delay */
 304         cx18_av_write(cx, 0x473, burst);
 305
 306         /* Sets vertical blanking delay and active duration */
 307         cx18_av_write(cx, 0x474, vblank);
 308         cx18_av_write(cx, 0x475, 0xff & (((vblank >> 8) & 0x3) |
 309                                                 (vactive << 4)));
 310         cx18_av_write(cx, 0x476, vactive >> 4);
 311         cx18_av_write(cx, 0x477, vblank656);
 312
 313         /* Sets src decimation rate */
 314         cx18_av_write(cx, 0x478, 0xff & src_decimation);
 315         cx18_av_write(cx, 0x479, 0xff & (src_decimation >> 8));
 316
 317         /* Sets Luma and UV Low pass filters */
 318         cx18_av_write(cx, 0x47a, luma_lpf << 6 | ((uv_lpf << 4) & 0x30));
 319
 320         /* Enables comb filters */
 321         cx18_av_write(cx, 0x47b, comb);
 322
 323         /* Sets SC Step*/
 324         cx18_av_write(cx, 0x47c, sc);
 325         cx18_av_write(cx, 0x47d, 0xff & sc >> 8);
 326         cx18_av_write(cx, 0x47e, 0xff & sc >> 16);
 327
 328         /* Sets VBI parameters */
 329         if (std & V4L2_STD_625_50) {
 330                 cx18_av_write(cx, 0x47f, 0x01);
 331                 state->vbi_line_offset = 5;
 332         } else {
 333                 cx18_av_write(cx, 0x47f, 0x00);
 334                 state->vbi_line_offset = 8;
 335         }
 336 }
 337
 338 /* ----------------------------------------------------------------------- */
 339
 340 static void input_change(struct cx18 *cx)
 341 {
 342         struct cx18_av_state *state = &cx->av_state;
 343         v4l2_std_id std = state->std;
 344         u8 v;
 345
 346         /* Follow step 8c and 8d of section 3.16 in the cx18_av datasheet */
 347         cx18_av_write(cx, 0x49f, (std & V4L2_STD_NTSC) ? 0x14 : 0x11);
 348         cx18_av_and_or(cx, 0x401, ~0x60, 0);
 349         cx18_av_and_or(cx, 0x401, ~0x60, 0x60);
 350
 351         if (std & V4L2_STD_525_60) {
 352                 if (std == V4L2_STD_NTSC_M_JP) {
 353                         /* Japan uses EIAJ audio standard */
 354                         cx18_av_write_expect(cx, 0x808, 0xf7, 0xf7, 0xff);
 355                         cx18_av_write_expect(cx, 0x80b, 0x02, 0x02, 0x3f);
 356                 } else if (std == V4L2_STD_NTSC_M_KR) {
 357                         /* South Korea uses A2 audio standard */
 358                         cx18_av_write_expect(cx, 0x808, 0xf8, 0xf8, 0xff);
 359                         cx18_av_write_expect(cx, 0x80b, 0x03, 0x03, 0x3f);
 360                 } else {
 361                         /* Others use the BTSC audio standard */
 362                         cx18_av_write_expect(cx, 0x808, 0xf6, 0xf6, 0xff);
 363                         cx18_av_write_expect(cx, 0x80b, 0x01, 0x01, 0x3f);
 364                 }
 365         } else if (std & V4L2_STD_PAL) {
 366                 /* Follow tuner change procedure for PAL */
 367                 cx18_av_write_expect(cx, 0x808, 0xff, 0xff, 0xff);
 368                 cx18_av_write_expect(cx, 0x80b, 0x03, 0x03, 0x3f);
 369         } else if (std & V4L2_STD_SECAM) {
 370                 /* Select autodetect for SECAM */
 371                 cx18_av_write_expect(cx, 0x808, 0xff, 0xff, 0xff);
 372                 cx18_av_write_expect(cx, 0x80b, 0x03, 0x03, 0x3f);
 373         }
 374
 375         v = cx18_av_read(cx, 0x803);
 376         if (v & 0x10) {
 377                 /* restart audio decoder microcontroller */
 378                 v &= ~0x10;
 379                 cx18_av_write_expect(cx, 0x803, v, v, 0x1f);
 380                 v |= 0x10;
 381                 cx18_av_write_expect(cx, 0x803, v, v, 0x1f);
 382         }
 383 }
 384
 385 static int set_input(struct cx18 *cx, enum cx18_av_video_input vid_input,
 386                                         enum cx18_av_audio_input aud_input)
 387 {
 388         struct cx18_av_state *state = &cx->av_state;
 389         u8 is_composite = (vid_input >= CX18_AV_COMPOSITE1 &&
 390                            vid_input <= CX18_AV_COMPOSITE8);
 391         u8 reg;
 392         u8 v;
 393
 394         CX18_DEBUG_INFO("decoder set video input %d, audio input %d\n",
 395                         vid_input, aud_input);
 396
 397         if (is_composite) {
 398                 reg = 0xf0 + (vid_input - CX18_AV_COMPOSITE1);
 399         } else {
 400                 int luma = vid_input & 0xf0;
 401                 int chroma = vid_input & 0xf00;
 402
 403                 if ((vid_input & ~0xff0) ||
 404                     luma < CX18_AV_SVIDEO_LUMA1 ||
 405                     luma > CX18_AV_SVIDEO_LUMA8 ||
 406                     chroma < CX18_AV_SVIDEO_CHROMA4 ||
 407                     chroma > CX18_AV_SVIDEO_CHROMA8) {
 408                         CX18_ERR("0x%04x is not a valid video input!\n",
 409                                         vid_input);
 410                         return -EINVAL;
 411                 }
 412                 reg = 0xf0 + ((luma - CX18_AV_SVIDEO_LUMA1) >> 4);
 413                 if (chroma >= CX18_AV_SVIDEO_CHROMA7) {
 414                         reg &= 0x3f;
 415                         reg |= (chroma - CX18_AV_SVIDEO_CHROMA7) >> 2;
 416                 } else {
 417                         reg &= 0xcf;
 418                         reg |= (chroma - CX18_AV_SVIDEO_CHROMA4) >> 4;
 419                 }
 420         }
 421
 422         switch (aud_input) {
 423         case CX18_AV_AUDIO_SERIAL1:
 424         case CX18_AV_AUDIO_SERIAL2:
 425                 /* do nothing, use serial audio input */
 426                 break;
 427         case CX18_AV_AUDIO4: reg &= ~0x30; break;
 428         case CX18_AV_AUDIO5: reg &= ~0x30; reg |= 0x10; break;
 429         case CX18_AV_AUDIO6: reg &= ~0x30; reg |= 0x20; break;
 430         case CX18_AV_AUDIO7: reg &= ~0xc0; break;
 431         case CX18_AV_AUDIO8: reg &= ~0xc0; reg |= 0x40; break;
 432
 433         default:
 434                 CX18_ERR("0x%04x is not a valid audio input!\n", aud_input);
 435                 return -EINVAL;
 436         }
 437
 438         cx18_av_write_expect(cx, 0x103, reg, reg, 0xf7);
 439         /* Set INPUT_MODE to Composite (0) or S-Video (1) */
 440         cx18_av_and_or(cx, 0x401, ~0x6, is_composite ? 0 : 0x02);
 441
 442         /* Set CH_SEL_ADC2 to 1 if input comes from CH3 */
 443         v = cx18_av_read(cx, 0x102);
 444         if (reg & 0x80)
 445                 v &= ~0x2;
 446         else
 447                 v |= 0x2;
 448         /* Set DUAL_MODE_ADC2 to 1 if input comes from both CH2 and CH3 */
 449         if ((reg & 0xc0) != 0xc0 && (reg & 0x30) != 0x30)
 450                 v |= 0x4;
 451         else
 452                 v &= ~0x4;
 453         cx18_av_write_expect(cx, 0x102, v, v, 0x17);
 454
 455         /*cx18_av_and_or4(cx, 0x104, ~0x001b4180, 0x00004180);*/
 456
 457         state->vid_input = vid_input;
 458         state->aud_input = aud_input;
 459         cx18_av_audio_set_path(cx);
 460         input_change(cx);
 461         return 0;
 462 }
 463
 464 /* ----------------------------------------------------------------------- */
 465
 466 static int set_v4lstd(struct cx18 *cx)
 467 {
 468         struct cx18_av_state *state = &cx->av_state;
 469         u8 fmt = 0;     /* zero is autodetect */
 470         u8 pal_m = 0;
 471
 472         /* First tests should be against specific std */
 473         if (state->std == V4L2_STD_NTSC_M_JP) {
 474                 fmt = 0x2;
 475         } else if (state->std == V4L2_STD_NTSC_443) {
 476                 fmt = 0x3;
 477         } else if (state->std == V4L2_STD_PAL_M) {
 478                 pal_m = 1;
 479                 fmt = 0x5;
 480         } else if (state->std == V4L2_STD_PAL_N) {
 481                 fmt = 0x6;
 482         } else if (state->std == V4L2_STD_PAL_Nc) {
 483                 fmt = 0x7;
 484         } else if (state->std == V4L2_STD_PAL_60) {
 485                 fmt = 0x8;
 486         } else {
 487                 /* Then, test against generic ones */
 488                 if (state->std & V4L2_STD_NTSC)
 489                         fmt = 0x1;
 490                 else if (state->std & V4L2_STD_PAL)
 491                         fmt = 0x4;
 492                 else if (state->std & V4L2_STD_SECAM)
 493                         fmt = 0xc;
 494         }
 495
 496         CX18_DEBUG_INFO("changing video std to fmt %i\n", fmt);
 497
 498         /* Follow step 9 of section 3.16 in the cx18_av datasheet.
 499            Without this PAL may display a vertical ghosting effect.
 500            This happens for example with the Yuan MPC622. */
 501         if (fmt >= 4 && fmt < 8) {
 502                 /* Set format to NTSC-M */
 503                 cx18_av_and_or(cx, 0x400, ~0xf, 1);
 504                 /* Turn off LCOMB */
 505                 cx18_av_and_or(cx, 0x47b, ~6, 0);
 506         }
 507         cx18_av_and_or(cx, 0x400, ~0x2f, fmt | 0x20);
 508         cx18_av_and_or(cx, 0x403, ~0x3, pal_m);
 509         cx18_av_std_setup(cx);
 510         input_change(cx);
 511         return 0;
 512 }
 513
 514 /* ----------------------------------------------------------------------- */
 515
 516 static int set_v4lctrl(struct cx18 *cx, struct v4l2_control *ctrl)
 517 {
 518         switch (ctrl->id) {
 519         case V4L2_CID_BRIGHTNESS:
 520                 if (ctrl->value < 0 || ctrl->value > 255) {
 521                         CX18_ERR("invalid brightness setting %d\n",
 522                                     ctrl->value);
 523                         return -ERANGE;
 524                 }
 525
 526                 cx18_av_write(cx, 0x414, ctrl->value - 128);
 527                 break;
 528
 529         case V4L2_CID_CONTRAST:
 530                 if (ctrl->value < 0 || ctrl->value > 127) {
 531                         CX18_ERR("invalid contrast setting %d\n",
 532                                     ctrl->value);
 533                         return -ERANGE;
 534                 }
 535
 536                 cx18_av_write(cx, 0x415, ctrl->value << 1);
 537                 break;
 538
 539         case V4L2_CID_SATURATION:
 540                 if (ctrl->value < 0 || ctrl->value > 127) {
 541                         CX18_ERR("invalid saturation setting %d\n",
 542                                     ctrl->value);
 543                         return -ERANGE;
 544                 }
 545
 546                 cx18_av_write(cx, 0x420, ctrl->value << 1);
 547                 cx18_av_write(cx, 0x421, ctrl->value << 1);
 548                 break;
 549
 550         case V4L2_CID_HUE:
 551                 if (ctrl->value < -127 || ctrl->value > 127) {
 552                         CX18_ERR("invalid hue setting %d\n", ctrl->value);
 553                         return -ERANGE;
 554                 }
 555
 556                 cx18_av_write(cx, 0x422, ctrl->value);
 557                 break;
 558
 559         case V4L2_CID_AUDIO_VOLUME:
 560         case V4L2_CID_AUDIO_BASS:
 561         case V4L2_CID_AUDIO_TREBLE:
 562         case V4L2_CID_AUDIO_BALANCE:
 563         case V4L2_CID_AUDIO_MUTE:
 564                 return cx18_av_audio(cx, VIDIOC_S_CTRL, ctrl);
 565
 566         default:
 567                 return -EINVAL;
 568         }
 569
 570         return 0;
 571 }
 572
 573 static int get_v4lctrl(struct cx18 *cx, struct v4l2_control *ctrl)
 574 {
 575         switch (ctrl->id) {
 576         case V4L2_CID_BRIGHTNESS:
 577                 ctrl->value = (s8)cx18_av_read(cx, 0x414) + 128;
 578                 break;
 579         case V4L2_CID_CONTRAST:
 580                 ctrl->value = cx18_av_read(cx, 0x415) >> 1;
 581                 break;
 582         case V4L2_CID_SATURATION:
 583                 ctrl->value = cx18_av_read(cx, 0x420) >> 1;
 584                 break;
 585         case V4L2_CID_HUE:
 586                 ctrl->value = (s8)cx18_av_read(cx, 0x422);
 587                 break;
 588         case V4L2_CID_AUDIO_VOLUME:
 589         case V4L2_CID_AUDIO_BASS:
 590         case V4L2_CID_AUDIO_TREBLE:
 591         case V4L2_CID_AUDIO_BALANCE:
 592         case V4L2_CID_AUDIO_MUTE:
 593                 return cx18_av_audio(cx, VIDIOC_G_CTRL, ctrl);
 594         default:
 595                 return -EINVAL;
 596         }
 597
 598         return 0;
 599 }
 600
 601 /* ----------------------------------------------------------------------- */
 602
 603 static int get_v4lfmt(struct cx18 *cx, struct v4l2_format *fmt)
 604 {
 605         switch (fmt->type) {
 606         case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
 607                 return cx18_av_vbi(cx, VIDIOC_G_FMT, fmt);
 608         default:
 609                 return -EINVAL;
 610         }
 611
 612         return 0;
 613 }
 614
 615 static int set_v4lfmt(struct cx18 *cx, struct v4l2_format *fmt)
 616 {
 617         struct cx18_av_state *state = &cx->av_state;
 618         struct v4l2_pix_format *pix;
 619         int HSC, VSC, Vsrc, Hsrc, filter, Vlines;
 620         int is_50Hz = !(state->std & V4L2_STD_525_60);
 621
 622         switch (fmt->type) {
 623         case V4L2_BUF_TYPE_VIDEO_CAPTURE:
 624                 pix = &(fmt->fmt.pix);
 625
 626                 Vsrc = (cx18_av_read(cx, 0x476) & 0x3f) << 4;
 627                 Vsrc |= (cx18_av_read(cx, 0x475) & 0xf0) >> 4;
 628
 629                 Hsrc = (cx18_av_read(cx, 0x472) & 0x3f) << 4;
 630                 Hsrc |= (cx18_av_read(cx, 0x471) & 0xf0) >> 4;
 631
 632                 Vlines = pix->height + (is_50Hz ? 4 : 7);
 633
 634                 if ((pix->width * 16 < Hsrc) || (Hsrc < pix->width) ||
 635                     (Vlines * 8 < Vsrc) || (Vsrc < Vlines)) {
 636                         CX18_ERR("%dx%d is not a valid size!\n",
 637                                     pix->width, pix->height);
 638                         return -ERANGE;
 639                 }
 640
 641                 HSC = (Hsrc * (1 << 20)) / pix->width - (1 << 20);
 642                 VSC = (1 << 16) - (Vsrc * (1 << 9) / Vlines - (1 << 9));
 643                 VSC &= 0x1fff;
 644
 645                 if (pix->width >= 385)
 646                         filter = 0;
 647                 else if (pix->width > 192)
 648                         filter = 1;
 649                 else if (pix->width > 96)
 650                         filter = 2;
 651                 else
 652                         filter = 3;
 653
 654                 CX18_DEBUG_INFO("decoder set size %dx%d -> scale  %ux%u\n",
 655                             pix->width, pix->height, HSC, VSC);
 656
 657                 /* HSCALE=HSC */
 658                 cx18_av_write(cx, 0x418, HSC & 0xff);
 659                 cx18_av_write(cx, 0x419, (HSC >> 8) & 0xff);
 660                 cx18_av_write(cx, 0x41a, HSC >> 16);
 661                 /* VSCALE=VSC */
 662                 cx18_av_write(cx, 0x41c, VSC & 0xff);
 663                 cx18_av_write(cx, 0x41d, VSC >> 8);
 664                 /* VS_INTRLACE=1 VFILT=filter */
 665                 cx18_av_write(cx, 0x41e, 0x8 | filter);
 666                 break;
 667
 668         case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
 669                 return cx18_av_vbi(cx, VIDIOC_S_FMT, fmt);
 670
 671         case V4L2_BUF_TYPE_VBI_CAPTURE:
 672                 return cx18_av_vbi(cx, VIDIOC_S_FMT, fmt);
 673
 674         default:
 675                 return -EINVAL;
 676         }
 677
 678         return 0;
 679 }
 680
 681 /* ----------------------------------------------------------------------- */
 682
 683 int cx18_av_cmd(struct cx18 *cx, unsigned int cmd, void *arg)
 684 {
 685         struct cx18_av_state *state = &cx->av_state;
 686         struct v4l2_tuner *vt = arg;
 687         struct v4l2_routing *route = arg;
 688
 689         /* ignore these commands */
 690         switch (cmd) {
 691         case TUNER_SET_TYPE_ADDR:
 692                 return 0;
 693         }
 694
 695         if (!state->is_initialized) {
 696                 CX18_DEBUG_INFO("cmd %08x triggered fw load\n", cmd);
 697                 /* initialize on first use */
 698                 state->is_initialized = 1;
 699                 cx18_av_initialize(cx);
 700         }
 701
 702         switch (cmd) {
 703         case VIDIOC_INT_DECODE_VBI_LINE:
 704                 return cx18_av_vbi(cx, cmd, arg);
 705
 706         case VIDIOC_INT_AUDIO_CLOCK_FREQ:
 707                 return cx18_av_audio(cx, cmd, arg);
 708
 709         case VIDIOC_STREAMON:
 710                 CX18_DEBUG_INFO("enable output\n");
 711                 cx18_av_write(cx, 0x115, 0x8c);
 712                 cx18_av_write(cx, 0x116, 0x07);
 713                 break;
 714
 715         case VIDIOC_STREAMOFF:
 716                 CX18_DEBUG_INFO("disable output\n");
 717                 cx18_av_write(cx, 0x115, 0x00);
 718                 cx18_av_write(cx, 0x116, 0x00);
 719                 break;
 720
 721         case VIDIOC_LOG_STATUS:
 722                 log_video_status(cx);
 723                 log_audio_status(cx);
 724                 break;
 725
 726         case VIDIOC_G_CTRL:
 727                 return get_v4lctrl(cx, (struct v4l2_control *)arg);
 728
 729         case VIDIOC_S_CTRL:
 730                 return set_v4lctrl(cx, (struct v4l2_control *)arg);
 731
 732         case VIDIOC_QUERYCTRL:
 733         {
 734                 struct v4l2_queryctrl *qc = arg;
 735
 736                 switch (qc->id) {
 737                 case V4L2_CID_BRIGHTNESS:
 738                 case V4L2_CID_CONTRAST:
 739                 case V4L2_CID_SATURATION:
 740                 case V4L2_CID_HUE:
 741                         return v4l2_ctrl_query_fill_std(qc);
 742                 default:
 743                         break;
 744                 }
 745
 746                 switch (qc->id) {
 747                 case V4L2_CID_AUDIO_VOLUME:
 748                         return v4l2_ctrl_query_fill(qc, 0, 65535,
 749                                 65535 / 100, state->default_volume);
 750                 case V4L2_CID_AUDIO_MUTE:
 751                 case V4L2_CID_AUDIO_BALANCE:
 752                 case V4L2_CID_AUDIO_BASS:
 753                 case V4L2_CID_AUDIO_TREBLE:
 754                         return v4l2_ctrl_query_fill_std(qc);
 755                 default:
 756                         return -EINVAL;
 757                 }
 758                 return -EINVAL;
 759         }
 760
 761         case VIDIOC_G_STD:
 762                 *(v4l2_std_id *)arg = state->std;
 763                 break;
 764
 765         case VIDIOC_S_STD:
 766                 if (state->radio == 0 && state->std == *(v4l2_std_id *)arg)
 767                         return 0;
 768                 state->radio = 0;
 769                 state->std = *(v4l2_std_id *)arg;
 770                 return set_v4lstd(cx);
 771
 772         case AUDC_SET_RADIO:
 773                 state->radio = 1;
 774                 break;
 775
 776         case VIDIOC_INT_G_VIDEO_ROUTING:
 777                 route->input = state->vid_input;
 778                 route->output = 0;
 779                 break;
 780
 781         case VIDIOC_INT_S_VIDEO_ROUTING:
 782                 return set_input(cx, route->input, state->aud_input);
 783
 784         case VIDIOC_INT_G_AUDIO_ROUTING:
 785                 route->input = state->aud_input;
 786                 route->output = 0;
 787                 break;
 788
 789         case VIDIOC_INT_S_AUDIO_ROUTING:
 790                 return set_input(cx, state->vid_input, route->input);
 791
 792         case VIDIOC_S_FREQUENCY:
 793                 input_change(cx);
 794                 break;
 795
 796         case VIDIOC_G_TUNER:
 797         {
 798                 u8 vpres = cx18_av_read(cx, 0x40e) & 0x20;
 799                 u8 mode;
 800                 int val = 0;
 801
 802                 if (state->radio)
 803                         break;
 804
 805                 vt->signal = vpres ? 0xffff : 0x0;
 806
 807                 vt->capability |=
 808                     V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_LANG1 |
 809                     V4L2_TUNER_CAP_LANG2 | V4L2_TUNER_CAP_SAP;
 810
 811                 mode = cx18_av_read(cx, 0x804);
 812
 813                 /* get rxsubchans and audmode */
 814                 if ((mode & 0xf) == 1)
 815                         val |= V4L2_TUNER_SUB_STEREO;
 816                 else
 817                         val |= V4L2_TUNER_SUB_MONO;
 818
 819                 if (mode == 2 || mode == 4)
 820                         val = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
 821
 822                 if (mode & 0x10)
 823                         val |= V4L2_TUNER_SUB_SAP;
 824
 825                 vt->rxsubchans = val;
 826                 vt->audmode = state->audmode;
 827                 break;
 828         }
 829
 830         case VIDIOC_S_TUNER:
 831         {
 832                 u8 v;
 833
 834                 if (state->radio)
 835                         break;
 836
 837                 v = cx18_av_read(cx, 0x809);
 838                 v &= ~0xf;
 839
 840                 switch (vt->audmode) {
 841                 case V4L2_TUNER_MODE_MONO:
 842                         /* mono      -> mono
 843                            stereo    -> mono
 844                            bilingual -> lang1 */
 845                         break;
 846                 case V4L2_TUNER_MODE_STEREO:
 847                 case V4L2_TUNER_MODE_LANG1:
 848                         /* mono      -> mono
 849                            stereo    -> stereo
 850                            bilingual -> lang1 */
 851                         v |= 0x4;
 852                         break;
 853                 case V4L2_TUNER_MODE_LANG1_LANG2:
 854                         /* mono      -> mono
 855                            stereo    -> stereo
 856                            bilingual -> lang1/lang2 */
 857                         v |= 0x7;
 858                         break;
 859                 case V4L2_TUNER_MODE_LANG2:
 860                         /* mono      -> mono
 861                            stereo    -> stereo
 862                            bilingual -> lang2 */
 863                         v |= 0x1;
 864                         break;
 865                 default:
 866                         return -EINVAL;
 867                 }
 868                 cx18_av_write_expect(cx, 0x809, v, v, 0xff);
 869                 state->audmode = vt->audmode;
 870                 break;
 871         }
 872
 873         case VIDIOC_G_FMT:
 874                 return get_v4lfmt(cx, (struct v4l2_format *)arg);
 875
 876         case VIDIOC_S_FMT:
 877                 return set_v4lfmt(cx, (struct v4l2_format *)arg);
 878
 879         case VIDIOC_INT_RESET:
 880                 cx18_av_initialize(cx);
 881                 break;
 882
 883         default:
 884                 return -EINVAL;
 885         }
 886
 887         return 0;
 888 }
 889
 890 /* ----------------------------------------------------------------------- */
 891
 892 /* ----------------------------------------------------------------------- */
 893
 894 static void log_video_status(struct cx18 *cx)
 895 {
 896         static const char *const fmt_strs[] = {
 897                 "0x0",
 898                 "NTSC-M", "NTSC-J", "NTSC-4.43",
 899                 "PAL-BDGHI", "PAL-M", "PAL-N", "PAL-Nc", "PAL-60",
 900                 "0x9", "0xA", "0xB",
 901                 "SECAM",
 902                 "0xD", "0xE", "0xF"
 903         };
 904
 905         struct cx18_av_state *state = &cx->av_state;
 906         u8 vidfmt_sel = cx18_av_read(cx, 0x400) & 0xf;
 907         u8 gen_stat1 = cx18_av_read(cx, 0x40d);
 908         u8 gen_stat2 = cx18_av_read(cx, 0x40e);
 909         int vid_input = state->vid_input;
 910
 911         CX18_INFO("Video signal:              %spresent\n",
 912                     (gen_stat2 & 0x20) ? "" : "not ");
 913         CX18_INFO("Detected format:           %s\n",
 914                     fmt_strs[gen_stat1 & 0xf]);
 915
 916         CX18_INFO("Specified standard:        %s\n",
 917                     vidfmt_sel ? fmt_strs[vidfmt_sel] : "automatic detection");
 918
 919         if (vid_input >= CX18_AV_COMPOSITE1 &&
 920             vid_input <= CX18_AV_COMPOSITE8) {
 921                 CX18_INFO("Specified video input:     Composite %d\n",
 922                         vid_input - CX18_AV_COMPOSITE1 + 1);
 923         } else {
 924                 CX18_INFO("Specified video input:     S-Video (Luma In%d, Chroma In%d)\n",
 925                         (vid_input & 0xf0) >> 4, (vid_input & 0xf00) >> 8);
 926         }
 927
 928         CX18_INFO("Specified audioclock freq: %d Hz\n", state->audclk_freq);
 929 }
 930
 931 /* ----------------------------------------------------------------------- */
 932
 933 static void log_audio_status(struct cx18 *cx)
 934 {
 935         struct cx18_av_state *state = &cx->av_state;
 936         u8 download_ctl = cx18_av_read(cx, 0x803);
 937         u8 mod_det_stat0 = cx18_av_read(cx, 0x804);
 938         u8 mod_det_stat1 = cx18_av_read(cx, 0x805);
 939         u8 audio_config = cx18_av_read(cx, 0x808);
 940         u8 pref_mode = cx18_av_read(cx, 0x809);
 941         u8 afc0 = cx18_av_read(cx, 0x80b);
 942         u8 mute_ctl = cx18_av_read(cx, 0x8d3);
 943         int aud_input = state->aud_input;
 944         char *p;
 945
 946         switch (mod_det_stat0) {
 947         case 0x00: p = "mono"; break;
 948         case 0x01: p = "stereo"; break;
 949         case 0x02: p = "dual"; break;
 950         case 0x04: p = "tri"; break;
 951         case 0x10: p = "mono with SAP"; break;
 952         case 0x11: p = "stereo with SAP"; break;
 953         case 0x12: p = "dual with SAP"; break;
 954         case 0x14: p = "tri with SAP"; break;
 955         case 0xfe: p = "forced mode"; break;
 956         default: p = "not defined"; break;
 957         }
 958         CX18_INFO("Detected audio mode:       %s\n", p);
 959
 960         switch (mod_det_stat1) {
 961         case 0x00: p = "not defined"; break;
 962         case 0x01: p = "EIAJ"; break;
 963         case 0x02: p = "A2-M"; break;
 964         case 0x03: p = "A2-BG"; break;
 965         case 0x04: p = "A2-DK1"; break;
 966         case 0x05: p = "A2-DK2"; break;
 967         case 0x06: p = "A2-DK3"; break;
 968         case 0x07: p = "A1 (6.0 MHz FM Mono)"; break;
 969         case 0x08: p = "AM-L"; break;
 970         case 0x09: p = "NICAM-BG"; break;
 971         case 0x0a: p = "NICAM-DK"; break;
 972         case 0x0b: p = "NICAM-I"; break;
 973         case 0x0c: p = "NICAM-L"; break;
 974         case 0x0d: p = "BTSC/EIAJ/A2-M Mono (4.5 MHz FMMono)"; break;
 975         case 0x0e: p = "IF FM Radio"; break;
 976         case 0x0f: p = "BTSC"; break;
 977         case 0x10: p = "detected chrominance"; break;
 978         case 0xfd: p = "unknown audio standard"; break;
 979         case 0xfe: p = "forced audio standard"; break;
 980         case 0xff: p = "no detected audio standard"; break;
 981         default: p = "not defined"; break;
 982         }
 983         CX18_INFO("Detected audio standard:   %s\n", p);
 984         CX18_INFO("Audio muted:               %s\n",
 985                     (mute_ctl & 0x2) ? "yes" : "no");
 986         CX18_INFO("Audio microcontroller:     %s\n",
 987                     (download_ctl & 0x10) ? "running" : "stopped");
 988
 989         switch (audio_config >> 4) {
 990         case 0x00: p = "undefined"; break;
 991         case 0x01: p = "BTSC"; break;
 992         case 0x02: p = "EIAJ"; break;
 993         case 0x03: p = "A2-M"; break;
 994         case 0x04: p = "A2-BG"; break;
 995         case 0x05: p = "A2-DK1"; break;
 996         case 0x06: p = "A2-DK2"; break;
 997         case 0x07: p = "A2-DK3"; break;
 998         case 0x08: p = "A1 (6.0 MHz FM Mono)"; break;
 999         case 0x09: p = "AM-L"; break;
1000         case 0x0a: p = "NICAM-BG"; break;
1001         case 0x0b: p = "NICAM-DK"; break;
1002         case 0x0c: p = "NICAM-I"; break;
1003         case 0x0d: p = "NICAM-L"; break;
1004         case 0x0e: p = "FM radio"; break;
1005         case 0x0f: p = "automatic detection"; break;
1006         default: p = "undefined"; break;
1007         }
1008         CX18_INFO("Configured audio standard: %s\n", p);
1009
1010         if ((audio_config >> 4) < 0xF) {
1011                 switch (audio_config & 0xF) {
1012                 case 0x00: p = "MONO1 (LANGUAGE A/Mono L+R channel for BTSC, EIAJ, A2)"; break;
1013                 case 0x01: p = "MONO2 (LANGUAGE B)"; break;
1014                 case 0x02: p = "MONO3 (STEREO forced MONO)"; break;
1015                 case 0x03: p = "MONO4 (NICAM ANALOG-Language C/Analog Fallback)"; break;
1016                 case 0x04: p = "STEREO"; break;
1017                 case 0x05: p = "DUAL1 (AC)"; break;
1018                 case 0x06: p = "DUAL2 (BC)"; break;
1019                 case 0x07: p = "DUAL3 (AB)"; break;
1020                 default: p = "undefined";
1021                 }
1022                 CX18_INFO("Configured audio mode:     %s\n", p);
1023         } else {
1024                 switch (audio_config & 0xF) {
1025                 case 0x00: p = "BG"; break;
1026                 case 0x01: p = "DK1"; break;
1027                 case 0x02: p = "DK2"; break;
1028                 case 0x03: p = "DK3"; break;
1029                 case 0x04: p = "I"; break;
1030                 case 0x05: p = "L"; break;
1031                 case 0x06: p = "BTSC"; break;
1032                 case 0x07: p = "EIAJ"; break;
1033                 case 0x08: p = "A2-M"; break;
1034                 case 0x09: p = "FM Radio (4.5 MHz)"; break;
1035                 case 0x0a: p = "FM Radio (5.5 MHz)"; break;
1036                 case 0x0b: p = "S-Video"; break;
1037                 case 0x0f: p = "automatic standard and mode detection"; break;
1038                 default: p = "undefined"; break;
1039                 }
1040                 CX18_INFO("Configured audio system:   %s\n", p);
1041         }
1042
1043         if (aud_input)
1044                 CX18_INFO("Specified audio input:     Tuner (In%d)\n",
1045                                 aud_input);
1046         else
1047                 CX18_INFO("Specified audio input:     External\n");
1048
1049         switch (pref_mode & 0xf) {
1050         case 0: p = "mono/language A"; break;
1051         case 1: p = "language B"; break;
1052         case 2: p = "language C"; break;
1053         case 3: p = "analog fallback"; break;
1054         case 4: p = "stereo"; break;
1055         case 5: p = "language AC"; break;
1056         case 6: p = "language BC"; break;
1057         case 7: p = "language AB"; break;
1058         default: p = "undefined"; break;
1059         }
1060         CX18_INFO("Preferred audio mode:      %s\n", p);
1061
1062         if ((audio_config & 0xf) == 0xf) {
1063                 switch ((afc0 >> 3) & 0x1) {
1064                 case 0: p = "system DK"; break;
1065                 case 1: p = "system L"; break;
1066                 }
1067                 CX18_INFO("Selected 65 MHz format:    %s\n", p);
1068
1069                 switch (afc0 & 0x7) {
1070                 case 0: p = "Chroma"; break;
1071                 case 1: p = "BTSC"; break;
1072                 case 2: p = "EIAJ"; break;
1073                 case 3: p = "A2-M"; break;
1074                 case 4: p = "autodetect"; break;
1075                 default: p = "undefined"; break;
1076                 }
1077                 CX18_INFO("Selected 45 MHz format:    %s\n", p);
1078         }
1079 }