git.oblomov.eu Git - linux-2.6/blob - drivers/media/video/cx88/cx88-core.c

   1 /*
   2  * $Id: cx88-core.c,v 1.28 2005/06/12 04:19:19 mchehab Exp $
   3  *
   4  * device driver for Conexant 2388x based TV cards
   5  * driver core
   6  *
   7  * (c) 2003 Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]
   8  *
   9  *  This program is free software; you can redistribute it and/or modify
  10  *  it under the terms of the GNU General Public License as published by
  11  *  the Free Software Foundation; either version 2 of the License, or
  12  *  (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., 675 Mass Ave, Cambridge, MA 02139, USA.
  22  */
  23
  24 #include <linux/init.h>
  25 #include <linux/list.h>
  26 #include <linux/module.h>
  27 #include <linux/moduleparam.h>
  28 #include <linux/kernel.h>
  29 #include <linux/slab.h>
  30 #include <linux/kmod.h>
  31 #include <linux/sound.h>
  32 #include <linux/interrupt.h>
  33 #include <linux/pci.h>
  34 #include <linux/delay.h>
  35 #include <linux/videodev.h>
  36
  37 #include "cx88.h"
  38
  39 MODULE_DESCRIPTION("v4l2 driver module for cx2388x based TV cards");
  40 MODULE_AUTHOR("Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]");
  41 MODULE_LICENSE("GPL");
  42
  43 /* ------------------------------------------------------------------ */
  44
  45 static unsigned int core_debug = 0;
  46 module_param(core_debug,int,0644);
  47 MODULE_PARM_DESC(core_debug,"enable debug messages [core]");
  48
  49 static unsigned int latency = UNSET;
  50 module_param(latency,int,0444);
  51 MODULE_PARM_DESC(latency,"pci latency timer");
  52
  53 static unsigned int tuner[] = {[0 ... (CX88_MAXBOARDS - 1)] = UNSET };
  54 static unsigned int radio[] = {[0 ... (CX88_MAXBOARDS - 1)] = UNSET };
  55 static unsigned int card[]  = {[0 ... (CX88_MAXBOARDS - 1)] = UNSET };
  56
  57 module_param_array(tuner, int, NULL, 0444);
  58 module_param_array(radio, int, NULL, 0444);
  59 module_param_array(card,  int, NULL, 0444);
  60
  61 MODULE_PARM_DESC(tuner,"tuner type");
  62 MODULE_PARM_DESC(radio,"radio tuner type");
  63 MODULE_PARM_DESC(card,"card type");
  64
  65 static unsigned int nicam = 0;
  66 module_param(nicam,int,0644);
  67 MODULE_PARM_DESC(nicam,"tv audio is nicam");
  68
  69 static unsigned int nocomb = 0;
  70 module_param(nocomb,int,0644);
  71 MODULE_PARM_DESC(nocomb,"disable comb filter");
  72
  73 #define dprintk(level,fmt, arg...)      if (core_debug >= level)        \
  74         printk(KERN_DEBUG "%s: " fmt, core->name , ## arg)
  75
  76 static unsigned int cx88_devcount;
  77 static LIST_HEAD(cx88_devlist);
  78 static DECLARE_MUTEX(devlist);
  79
  80 /* ------------------------------------------------------------------ */
  81 /* debug help functions                                               */
  82
  83 static const char *v4l1_ioctls[] = {
  84         "0", "CGAP", "GCHAN", "SCHAN", "GTUNER", "STUNER", "GPICT", "SPICT",
  85         "CCAPTURE", "GWIN", "SWIN", "GFBUF", "SFBUF", "KEY", "GFREQ",
  86         "SFREQ", "GAUDIO", "SAUDIO", "SYNC", "MCAPTURE", "GMBUF", "GUNIT",
  87         "GCAPTURE", "SCAPTURE", "SPLAYMODE", "SWRITEMODE", "GPLAYINFO",
  88         "SMICROCODE", "GVBIFMT", "SVBIFMT" };
  89 #define V4L1_IOCTLS ARRAY_SIZE(v4l1_ioctls)
  90
  91 static const char *v4l2_ioctls[] = {
  92         "QUERYCAP", "1", "ENUM_PIXFMT", "ENUM_FBUFFMT", "G_FMT", "S_FMT",
  93         "G_COMP", "S_COMP", "REQBUFS", "QUERYBUF", "G_FBUF", "S_FBUF",
  94         "G_WIN", "S_WIN", "PREVIEW", "QBUF", "16", "DQBUF", "STREAMON",
  95         "STREAMOFF", "G_PERF", "G_PARM", "S_PARM", "G_STD", "S_STD",
  96         "ENUMSTD", "ENUMINPUT", "G_CTRL", "S_CTRL", "G_TUNER", "S_TUNER",
  97         "G_FREQ", "S_FREQ", "G_AUDIO", "S_AUDIO", "35", "QUERYCTRL",
  98         "QUERYMENU", "G_INPUT", "S_INPUT", "ENUMCVT", "41", "42", "43",
  99         "44", "45",  "G_OUTPUT", "S_OUTPUT", "ENUMOUTPUT", "G_AUDOUT",
 100         "S_AUDOUT", "ENUMFX", "G_EFFECT", "S_EFFECT", "G_MODULATOR",
 101         "S_MODULATOR"
 102 };
 103 #define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls)
 104
 105 void cx88_print_ioctl(char *name, unsigned int cmd)
 106 {
 107         char *dir;
 108
 109         switch (_IOC_DIR(cmd)) {
 110         case _IOC_NONE:              dir = "--"; break;
 111         case _IOC_READ:              dir = "r-"; break;
 112         case _IOC_WRITE:             dir = "-w"; break;
 113         case _IOC_READ | _IOC_WRITE: dir = "rw"; break;
 114         default:                     dir = "??"; break;
 115         }
 116         switch (_IOC_TYPE(cmd)) {
 117         case 'v':
 118                 printk(KERN_DEBUG "%s: ioctl 0x%08x (v4l1, %s, VIDIOC%s)\n",
 119                        name, cmd, dir, (_IOC_NR(cmd) < V4L1_IOCTLS) ?
 120                        v4l1_ioctls[_IOC_NR(cmd)] : "???");
 121                 break;
 122         case 'V':
 123                 printk(KERN_DEBUG "%s: ioctl 0x%08x (v4l2, %s, VIDIOC_%s)\n",
 124                        name, cmd, dir, (_IOC_NR(cmd) < V4L2_IOCTLS) ?
 125                        v4l2_ioctls[_IOC_NR(cmd)] : "???");
 126                 break;
 127         default:
 128                 printk(KERN_DEBUG "%s: ioctl 0x%08x (???, %s, #%d)\n",
 129                        name, cmd, dir, _IOC_NR(cmd));
 130         }
 131 }
 132
 133 /* ------------------------------------------------------------------ */
 134 #define NO_SYNC_LINE (-1U)
 135
 136 static u32* cx88_risc_field(u32 *rp, struct scatterlist *sglist,
 137                             unsigned int offset, u32 sync_line,
 138                             unsigned int bpl, unsigned int padding,
 139                             unsigned int lines)
 140 {
 141         struct scatterlist *sg;
 142         unsigned int line,todo;
 143
 144         /* sync instruction */
 145         if (sync_line != NO_SYNC_LINE)
 146                 *(rp++) = cpu_to_le32(RISC_RESYNC | sync_line);
 147
 148         /* scan lines */
 149         sg = sglist;
 150         for (line = 0; line < lines; line++) {
 151                 while (offset && offset >= sg_dma_len(sg)) {
 152                         offset -= sg_dma_len(sg);
 153                         sg++;
 154                 }
 155                 if (bpl <= sg_dma_len(sg)-offset) {
 156                         /* fits into current chunk */
 157                         *(rp++)=cpu_to_le32(RISC_WRITE|RISC_SOL|RISC_EOL|bpl);
 158                         *(rp++)=cpu_to_le32(sg_dma_address(sg)+offset);
 159                         offset+=bpl;
 160                 } else {
 161                         /* scanline needs to be splitted */
 162                         todo = bpl;
 163                         *(rp++)=cpu_to_le32(RISC_WRITE|RISC_SOL|
 164                                             (sg_dma_len(sg)-offset));
 165                         *(rp++)=cpu_to_le32(sg_dma_address(sg)+offset);
 166                         todo -= (sg_dma_len(sg)-offset);
 167                         offset = 0;
 168                         sg++;
 169                         while (todo > sg_dma_len(sg)) {
 170                                 *(rp++)=cpu_to_le32(RISC_WRITE|
 171                                                     sg_dma_len(sg));
 172                                 *(rp++)=cpu_to_le32(sg_dma_address(sg));
 173                                 todo -= sg_dma_len(sg);
 174                                 sg++;
 175                         }
 176                         *(rp++)=cpu_to_le32(RISC_WRITE|RISC_EOL|todo);
 177                         *(rp++)=cpu_to_le32(sg_dma_address(sg));
 178                         offset += todo;
 179                 }
 180                 offset += padding;
 181         }
 182
 183         return rp;
 184 }
 185
 186 int cx88_risc_buffer(struct pci_dev *pci, struct btcx_riscmem *risc,
 187                      struct scatterlist *sglist,
 188                      unsigned int top_offset, unsigned int bottom_offset,
 189                      unsigned int bpl, unsigned int padding, unsigned int lines)
 190 {
 191         u32 instructions,fields;
 192         u32 *rp;
 193         int rc;
 194
 195         fields = 0;
 196         if (UNSET != top_offset)
 197                 fields++;
 198         if (UNSET != bottom_offset)
 199                 fields++;
 200
 201         /* estimate risc mem: worst case is one write per page border +
 202            one write per scan line + syncs + jump (all 2 dwords) */
 203         instructions  = (bpl * lines * fields) / PAGE_SIZE + lines * fields;
 204         instructions += 3 + 4;
 205         if ((rc = btcx_riscmem_alloc(pci,risc,instructions*8)) < 0)
 206                 return rc;
 207
 208         /* write risc instructions */
 209         rp = risc->cpu;
 210         if (UNSET != top_offset)
 211                 rp = cx88_risc_field(rp, sglist, top_offset, 0,
 212                                      bpl, padding, lines);
 213         if (UNSET != bottom_offset)
 214                 rp = cx88_risc_field(rp, sglist, bottom_offset, 0x200,
 215                                      bpl, padding, lines);
 216
 217         /* save pointer to jmp instruction address */
 218         risc->jmp = rp;
 219         BUG_ON((risc->jmp - risc->cpu + 2) / 4 > risc->size);
 220         return 0;
 221 }
 222
 223 int cx88_risc_databuffer(struct pci_dev *pci, struct btcx_riscmem *risc,
 224                          struct scatterlist *sglist, unsigned int bpl,
 225                          unsigned int lines)
 226 {
 227         u32 instructions;
 228         u32 *rp;
 229         int rc;
 230
 231         /* estimate risc mem: worst case is one write per page border +
 232            one write per scan line + syncs + jump (all 2 dwords) */
 233         instructions  = (bpl * lines) / PAGE_SIZE + lines;
 234         instructions += 3 + 4;
 235         if ((rc = btcx_riscmem_alloc(pci,risc,instructions*8)) < 0)
 236                 return rc;
 237
 238         /* write risc instructions */
 239         rp = risc->cpu;
 240         rp = cx88_risc_field(rp, sglist, 0, NO_SYNC_LINE, bpl, 0, lines);
 241
 242         /* save pointer to jmp instruction address */
 243         risc->jmp = rp;
 244         BUG_ON((risc->jmp - risc->cpu + 2) / 4 > risc->size);
 245         return 0;
 246 }
 247
 248 int cx88_risc_stopper(struct pci_dev *pci, struct btcx_riscmem *risc,
 249                       u32 reg, u32 mask, u32 value)
 250 {
 251         u32 *rp;
 252         int rc;
 253
 254         if ((rc = btcx_riscmem_alloc(pci, risc, 4*16)) < 0)
 255                 return rc;
 256
 257         /* write risc instructions */
 258         rp = risc->cpu;
 259         *(rp++) = cpu_to_le32(RISC_WRITECR  | RISC_IRQ2 | RISC_IMM);
 260         *(rp++) = cpu_to_le32(reg);
 261         *(rp++) = cpu_to_le32(value);
 262         *(rp++) = cpu_to_le32(mask);
 263         *(rp++) = cpu_to_le32(RISC_JUMP);
 264         *(rp++) = cpu_to_le32(risc->dma);
 265         return 0;
 266 }
 267
 268 void
 269 cx88_free_buffer(struct pci_dev *pci, struct cx88_buffer *buf)
 270 {
 271         if (in_interrupt())
 272                 BUG();
 273         videobuf_waiton(&buf->vb,0,0);
 274         videobuf_dma_pci_unmap(pci, &buf->vb.dma);
 275         videobuf_dma_free(&buf->vb.dma);
 276         btcx_riscmem_free(pci, &buf->risc);
 277         buf->vb.state = STATE_NEEDS_INIT;
 278 }
 279
 280 /* ------------------------------------------------------------------ */
 281 /* our SRAM memory layout                                             */
 282
 283 /* we are going to put all thr risc programs into host memory, so we
 284  * can use the whole SDRAM for the DMA fifos.  To simplify things, we
 285  * use a static memory layout.  That surely will waste memory in case
 286  * we don't use all DMA channels at the same time (which will be the
 287  * case most of the time).  But that still gives us enougth FIFO space
 288  * to be able to deal with insane long pci latencies ...
 289  *
 290  * FIFO space allocations:
 291  *    channel  21    (y video)  - 10.0k
 292  *    channel  22    (u video)  -  2.0k
 293  *    channel  23    (v video)  -  2.0k
 294  *    channel  24    (vbi)      -  4.0k
 295  *    channels 25+26 (audio)    -  0.5k
 296  *    channel  28    (mpeg)     -  4.0k
 297  *    TOTAL                     = 25.5k
 298  *
 299  * Every channel has 160 bytes control data (64 bytes instruction
 300  * queue and 6 CDT entries), which is close to 2k total.
 301  *
 302  * Address layout:
 303  *    0x0000 - 0x03ff    CMDs / reserved
 304  *    0x0400 - 0x0bff    instruction queues + CDs
 305  *    0x0c00 -           FIFOs
 306  */
 307
 308 struct sram_channel cx88_sram_channels[] = {
 309         [SRAM_CH21] = {
 310                 .name       = "video y / packed",
 311                 .cmds_start = 0x180040,
 312                 .ctrl_start = 0x180400,
 313                 .cdt        = 0x180400 + 64,
 314                 .fifo_start = 0x180c00,
 315                 .fifo_size  = 0x002800,
 316                 .ptr1_reg   = MO_DMA21_PTR1,
 317                 .ptr2_reg   = MO_DMA21_PTR2,
 318                 .cnt1_reg   = MO_DMA21_CNT1,
 319                 .cnt2_reg   = MO_DMA21_CNT2,
 320         },
 321         [SRAM_CH22] = {
 322                 .name       = "video u",
 323                 .cmds_start = 0x180080,
 324                 .ctrl_start = 0x1804a0,
 325                 .cdt        = 0x1804a0 + 64,
 326                 .fifo_start = 0x183400,
 327                 .fifo_size  = 0x000800,
 328                 .ptr1_reg   = MO_DMA22_PTR1,
 329                 .ptr2_reg   = MO_DMA22_PTR2,
 330                 .cnt1_reg   = MO_DMA22_CNT1,
 331                 .cnt2_reg   = MO_DMA22_CNT2,
 332         },
 333         [SRAM_CH23] = {
 334                 .name       = "video v",
 335                 .cmds_start = 0x1800c0,
 336                 .ctrl_start = 0x180540,
 337                 .cdt        = 0x180540 + 64,
 338                 .fifo_start = 0x183c00,
 339                 .fifo_size  = 0x000800,
 340                 .ptr1_reg   = MO_DMA23_PTR1,
 341                 .ptr2_reg   = MO_DMA23_PTR2,
 342                 .cnt1_reg   = MO_DMA23_CNT1,
 343                 .cnt2_reg   = MO_DMA23_CNT2,
 344         },
 345         [SRAM_CH24] = {
 346                 .name       = "vbi",
 347                 .cmds_start = 0x180100,
 348                 .ctrl_start = 0x1805e0,
 349                 .cdt        = 0x1805e0 + 64,
 350                 .fifo_start = 0x184400,
 351                 .fifo_size  = 0x001000,
 352                 .ptr1_reg   = MO_DMA24_PTR1,
 353                 .ptr2_reg   = MO_DMA24_PTR2,
 354                 .cnt1_reg   = MO_DMA24_CNT1,
 355                 .cnt2_reg   = MO_DMA24_CNT2,
 356         },
 357         [SRAM_CH25] = {
 358                 .name       = "audio from",
 359                 .cmds_start = 0x180140,
 360                 .ctrl_start = 0x180680,
 361                 .cdt        = 0x180680 + 64,
 362                 .fifo_start = 0x185400,
 363                 .fifo_size  = 0x000200,
 364                 .ptr1_reg   = MO_DMA25_PTR1,
 365                 .ptr2_reg   = MO_DMA25_PTR2,
 366                 .cnt1_reg   = MO_DMA25_CNT1,
 367                 .cnt2_reg   = MO_DMA25_CNT2,
 368         },
 369         [SRAM_CH26] = {
 370                 .name       = "audio to",
 371                 .cmds_start = 0x180180,
 372                 .ctrl_start = 0x180720,
 373                 .cdt        = 0x180680 + 64,  /* same as audio IN */
 374                 .fifo_start = 0x185400,       /* same as audio IN */
 375                 .fifo_size  = 0x000200,       /* same as audio IN */
 376                 .ptr1_reg   = MO_DMA26_PTR1,
 377                 .ptr2_reg   = MO_DMA26_PTR2,
 378                 .cnt1_reg   = MO_DMA26_CNT1,
 379                 .cnt2_reg   = MO_DMA26_CNT2,
 380         },
 381         [SRAM_CH28] = {
 382                 .name       = "mpeg",
 383                 .cmds_start = 0x180200,
 384                 .ctrl_start = 0x1807C0,
 385                 .cdt        = 0x1807C0 + 64,
 386                 .fifo_start = 0x185600,
 387                 .fifo_size  = 0x001000,
 388                 .ptr1_reg   = MO_DMA28_PTR1,
 389                 .ptr2_reg   = MO_DMA28_PTR2,
 390                 .cnt1_reg   = MO_DMA28_CNT1,
 391                 .cnt2_reg   = MO_DMA28_CNT2,
 392         },
 393 };
 394
 395 int cx88_sram_channel_setup(struct cx88_core *core,
 396                             struct sram_channel *ch,
 397                             unsigned int bpl, u32 risc)
 398 {
 399         unsigned int i,lines;
 400         u32 cdt;
 401
 402         bpl   = (bpl + 7) & ~7; /* alignment */
 403         cdt   = ch->cdt;
 404         lines = ch->fifo_size / bpl;
 405         if (lines > 6)
 406                 lines = 6;
 407         BUG_ON(lines < 2);
 408
 409         /* write CDT */
 410         for (i = 0; i < lines; i++)
 411                 cx_write(cdt + 16*i, ch->fifo_start + bpl*i);
 412
 413         /* write CMDS */
 414         cx_write(ch->cmds_start +  0, risc);
 415         cx_write(ch->cmds_start +  4, cdt);
 416         cx_write(ch->cmds_start +  8, (lines*16) >> 3);
 417         cx_write(ch->cmds_start + 12, ch->ctrl_start);
 418         cx_write(ch->cmds_start + 16, 64 >> 2);
 419         for (i = 20; i < 64; i += 4)
 420                 cx_write(ch->cmds_start + i, 0);
 421
 422         /* fill registers */
 423         cx_write(ch->ptr1_reg, ch->fifo_start);
 424         cx_write(ch->ptr2_reg, cdt);
 425         cx_write(ch->cnt1_reg, (bpl >> 3) -1);
 426         cx_write(ch->cnt2_reg, (lines*16) >> 3);
 427
 428         dprintk(2,"sram setup %s: bpl=%d lines=%d\n", ch->name, bpl, lines);
 429         return 0;
 430 }
 431
 432 /* ------------------------------------------------------------------ */
 433 /* debug helper code                                                  */
 434
 435 int cx88_risc_decode(u32 risc)
 436 {
 437         static char *instr[16] = {
 438                 [ RISC_SYNC    >> 28 ] = "sync",
 439                 [ RISC_WRITE   >> 28 ] = "write",
 440                 [ RISC_WRITEC  >> 28 ] = "writec",
 441                 [ RISC_READ    >> 28 ] = "read",
 442                 [ RISC_READC   >> 28 ] = "readc",
 443                 [ RISC_JUMP    >> 28 ] = "jump",
 444                 [ RISC_SKIP    >> 28 ] = "skip",
 445                 [ RISC_WRITERM >> 28 ] = "writerm",
 446                 [ RISC_WRITECM >> 28 ] = "writecm",
 447                 [ RISC_WRITECR >> 28 ] = "writecr",
 448         };
 449         static int incr[16] = {
 450                 [ RISC_WRITE   >> 28 ] = 2,
 451                 [ RISC_JUMP    >> 28 ] = 2,
 452                 [ RISC_WRITERM >> 28 ] = 3,
 453                 [ RISC_WRITECM >> 28 ] = 3,
 454                 [ RISC_WRITECR >> 28 ] = 4,
 455         };
 456         static char *bits[] = {
 457                 "12",   "13",   "14",   "resync",
 458                 "cnt0", "cnt1", "18",   "19",
 459                 "20",   "21",   "22",   "23",
 460                 "irq1", "irq2", "eol",  "sol",
 461         };
 462         int i;
 463
 464         printk("0x%08x [ %s", risc,
 465                instr[risc >> 28] ? instr[risc >> 28] : "INVALID");
 466         for (i = ARRAY_SIZE(bits)-1; i >= 0; i--)
 467                 if (risc & (1 << (i + 12)))
 468                         printk(" %s",bits[i]);
 469         printk(" count=%d ]\n", risc & 0xfff);
 470         return incr[risc >> 28] ? incr[risc >> 28] : 1;
 471 }
 472
 473 #if 0 /* currently unused, but useful for debugging */
 474 void cx88_risc_disasm(struct cx88_core *core,
 475                       struct btcx_riscmem *risc)
 476 {
 477         unsigned int i,j,n;
 478
 479         printk("%s: risc disasm: %p [dma=0x%08lx]\n",
 480                core->name, risc->cpu, (unsigned long)risc->dma);
 481         for (i = 0; i < (risc->size >> 2); i += n) {
 482                 printk("%s:   %04d: ", core->name, i);
 483                 n = cx88_risc_decode(risc->cpu[i]);
 484                 for (j = 1; j < n; j++)
 485                         printk("%s:   %04d: 0x%08x [ arg #%d ]\n",
 486                                core->name, i+j, risc->cpu[i+j], j);
 487                 if (risc->cpu[i] == RISC_JUMP)
 488                         break;
 489         }
 490 }
 491 #endif
 492
 493 void cx88_sram_channel_dump(struct cx88_core *core,
 494                             struct sram_channel *ch)
 495 {
 496         static char *name[] = {
 497                 "initial risc",
 498                 "cdt base",
 499                 "cdt size",
 500                 "iq base",
 501                 "iq size",
 502                 "risc pc",
 503                 "iq wr ptr",
 504                 "iq rd ptr",
 505                 "cdt current",
 506                 "pci target",
 507                 "line / byte",
 508         };
 509         u32 risc;
 510         unsigned int i,j,n;
 511
 512         printk("%s: %s - dma channel status dump\n",
 513                core->name,ch->name);
 514         for (i = 0; i < ARRAY_SIZE(name); i++)
 515                 printk("%s:   cmds: %-12s: 0x%08x\n",
 516                        core->name,name[i],
 517                        cx_read(ch->cmds_start + 4*i));
 518         for (i = 0; i < 4; i++) {
 519                 risc = cx_read(ch->cmds_start + 4 * (i+11));
 520                 printk("%s:   risc%d: ", core->name, i);
 521                 cx88_risc_decode(risc);
 522         }
 523         for (i = 0; i < 16; i += n) {
 524                 risc = cx_read(ch->ctrl_start + 4 * i);
 525                 printk("%s:   iq %x: ", core->name, i);
 526                 n = cx88_risc_decode(risc);
 527                 for (j = 1; j < n; j++) {
 528                         risc = cx_read(ch->ctrl_start + 4 * (i+j));
 529                         printk("%s:   iq %x: 0x%08x [ arg #%d ]\n",
 530                                core->name, i+j, risc, j);
 531                 }
 532         }
 533
 534         printk("%s: fifo: 0x%08x -> 0x%x\n",
 535                core->name, ch->fifo_start, ch->fifo_start+ch->fifo_size);
 536         printk("%s: ctrl: 0x%08x -> 0x%x\n",
 537                core->name, ch->ctrl_start, ch->ctrl_start+6*16);
 538         printk("%s:   ptr1_reg: 0x%08x\n",
 539                core->name,cx_read(ch->ptr1_reg));
 540         printk("%s:   ptr2_reg: 0x%08x\n",
 541                core->name,cx_read(ch->ptr2_reg));
 542         printk("%s:   cnt1_reg: 0x%08x\n",
 543                core->name,cx_read(ch->cnt1_reg));
 544         printk("%s:   cnt2_reg: 0x%08x\n",
 545                core->name,cx_read(ch->cnt2_reg));
 546 }
 547
 548 static char *cx88_pci_irqs[32] = {
 549         "vid", "aud", "ts", "vip", "hst", "5", "6", "tm1",
 550         "src_dma", "dst_dma", "risc_rd_err", "risc_wr_err",
 551         "brdg_err", "src_dma_err", "dst_dma_err", "ipb_dma_err",
 552         "i2c", "i2c_rack", "ir_smp", "gpio0", "gpio1"
 553 };
 554 char *cx88_vid_irqs[32] = {
 555         "y_risci1", "u_risci1", "v_risci1", "vbi_risc1",
 556         "y_risci2", "u_risci2", "v_risci2", "vbi_risc2",
 557         "y_oflow",  "u_oflow",  "v_oflow",  "vbi_oflow",
 558         "y_sync",   "u_sync",   "v_sync",   "vbi_sync",
 559         "opc_err",  "par_err",  "rip_err",  "pci_abort",
 560 };
 561 char *cx88_mpeg_irqs[32] = {
 562         "ts_risci1", NULL, NULL, NULL,
 563         "ts_risci2", NULL, NULL, NULL,
 564         "ts_oflow",  NULL, NULL, NULL,
 565         "ts_sync",   NULL, NULL, NULL,
 566         "opc_err", "par_err", "rip_err", "pci_abort",
 567         "ts_err?",
 568 };
 569
 570 void cx88_print_irqbits(char *name, char *tag, char **strings,
 571                         u32 bits, u32 mask)
 572 {
 573         unsigned int i;
 574
 575         printk(KERN_DEBUG "%s: %s [0x%x]", name, tag, bits);
 576         for (i = 0; i < 32; i++) {
 577                 if (!(bits & (1 << i)))
 578                         continue;
 579                 if (strings[i])
 580                         printk(" %s", strings[i]);
 581                 else
 582                         printk(" %d", i);
 583                 if (!(mask & (1 << i)))
 584                         continue;
 585                 printk("*");
 586         }
 587         printk("\n");
 588 }
 589
 590 /* ------------------------------------------------------------------ */
 591
 592 int cx88_core_irq(struct cx88_core *core, u32 status)
 593 {
 594         int handled = 0;
 595
 596         if (status & (1<<18)) {
 597                 cx88_ir_irq(core);
 598                 handled++;
 599         }
 600         if (!handled)
 601                 cx88_print_irqbits(core->name, "irq pci",
 602                                    cx88_pci_irqs, status,
 603                                    core->pci_irqmask);
 604         return handled;
 605 }
 606
 607 void cx88_wakeup(struct cx88_core *core,
 608                  struct cx88_dmaqueue *q, u32 count)
 609 {
 610         struct cx88_buffer *buf;
 611         int bc;
 612
 613         for (bc = 0;; bc++) {
 614                 if (list_empty(&q->active))
 615                         break;
 616                 buf = list_entry(q->active.next,
 617                                  struct cx88_buffer, vb.queue);
 618 #if 0
 619                 if (buf->count > count)
 620                         break;
 621 #else
 622                 /* count comes from the hw and is is 16bit wide --
 623                  * this trick handles wrap-arounds correctly for
 624                  * up to 32767 buffers in flight... */
 625                 if ((s16) (count - buf->count) < 0)
 626                         break;
 627 #endif
 628                 do_gettimeofday(&buf->vb.ts);
 629                 dprintk(2,"[%p/%d] wakeup reg=%d buf=%d\n",buf,buf->vb.i,
 630                         count, buf->count);
 631                 buf->vb.state = STATE_DONE;
 632                 list_del(&buf->vb.queue);
 633                 wake_up(&buf->vb.done);
 634         }
 635         if (list_empty(&q->active)) {
 636                 del_timer(&q->timeout);
 637         } else {
 638                 mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
 639         }
 640         if (bc != 1)
 641                 printk("%s: %d buffers handled (should be 1)\n",__FUNCTION__,bc);
 642 }
 643
 644 void cx88_shutdown(struct cx88_core *core)
 645 {
 646         /* disable RISC controller + IRQs */
 647         cx_write(MO_DEV_CNTRL2, 0);
 648
 649         /* stop dma transfers */
 650         cx_write(MO_VID_DMACNTRL, 0x0);
 651         cx_write(MO_AUD_DMACNTRL, 0x0);
 652         cx_write(MO_TS_DMACNTRL, 0x0);
 653         cx_write(MO_VIP_DMACNTRL, 0x0);
 654         cx_write(MO_GPHST_DMACNTRL, 0x0);
 655
 656         /* stop interrupts */
 657         cx_write(MO_PCI_INTMSK, 0x0);
 658         cx_write(MO_VID_INTMSK, 0x0);
 659         cx_write(MO_AUD_INTMSK, 0x0);
 660         cx_write(MO_TS_INTMSK, 0x0);
 661         cx_write(MO_VIP_INTMSK, 0x0);
 662         cx_write(MO_GPHST_INTMSK, 0x0);
 663
 664         /* stop capturing */
 665         cx_write(VID_CAPTURE_CONTROL, 0);
 666 }
 667
 668 int cx88_reset(struct cx88_core *core)
 669 {
 670         dprintk(1,"%s\n",__FUNCTION__);
 671         cx88_shutdown(core);
 672
 673         /* clear irq status */
 674         cx_write(MO_VID_INTSTAT, 0xFFFFFFFF); // Clear PIV int
 675         cx_write(MO_PCI_INTSTAT, 0xFFFFFFFF); // Clear PCI int
 676         cx_write(MO_INT1_STAT,   0xFFFFFFFF); // Clear RISC int
 677
 678         /* wait a bit */
 679         msleep(100);
 680
 681         /* init sram */
 682         cx88_sram_channel_setup(core, &cx88_sram_channels[SRAM_CH21], 720*4, 0);
 683         cx88_sram_channel_setup(core, &cx88_sram_channels[SRAM_CH22], 128, 0);
 684         cx88_sram_channel_setup(core, &cx88_sram_channels[SRAM_CH23], 128, 0);
 685         cx88_sram_channel_setup(core, &cx88_sram_channels[SRAM_CH24], 128, 0);
 686         cx88_sram_channel_setup(core, &cx88_sram_channels[SRAM_CH25], 128, 0);
 687         cx88_sram_channel_setup(core, &cx88_sram_channels[SRAM_CH26], 128, 0);
 688         cx88_sram_channel_setup(core, &cx88_sram_channels[SRAM_CH28], 188*4, 0);
 689
 690         /* misc init ... */
 691         cx_write(MO_INPUT_FORMAT, ((1 << 13) |   // agc enable
 692                                    (1 << 12) |   // agc gain
 693                                    (1 << 11) |   // adaptibe agc
 694                                    (0 << 10) |   // chroma agc
 695                                    (0 <<  9) |   // ckillen
 696                                    (7)));
 697
 698         /* setup image format */
 699         cx_andor(MO_COLOR_CTRL, 0x4000, 0x4000);
 700
 701         /* setup FIFO Threshholds */
 702         cx_write(MO_PDMA_STHRSH,   0x0807);
 703         cx_write(MO_PDMA_DTHRSH,   0x0807);
 704
 705         /* fixes flashing of image */
 706         cx_write(MO_AGC_SYNC_TIP1, 0x0380000F);
 707         cx_write(MO_AGC_BACK_VBI,  0x00E00555);
 708
 709         cx_write(MO_VID_INTSTAT,   0xFFFFFFFF); // Clear PIV int
 710         cx_write(MO_PCI_INTSTAT,   0xFFFFFFFF); // Clear PCI int
 711         cx_write(MO_INT1_STAT,     0xFFFFFFFF); // Clear RISC int
 712
 713         /* Reset on-board parts */
 714         cx_write(MO_SRST_IO, 0);
 715         msleep(10);
 716         cx_write(MO_SRST_IO, 1);
 717
 718         return 0;
 719 }
 720
 721 /* ------------------------------------------------------------------ */
 722
 723 static unsigned int inline norm_swidth(struct cx88_tvnorm *norm)
 724 {
 725         return (norm->id & V4L2_STD_625_50) ? 922 : 754;
 726 }
 727
 728 static unsigned int inline norm_hdelay(struct cx88_tvnorm *norm)
 729 {
 730         return (norm->id & V4L2_STD_625_50) ? 186 : 135;
 731 }
 732
 733 static unsigned int inline norm_vdelay(struct cx88_tvnorm *norm)
 734 {
 735         return (norm->id & V4L2_STD_625_50) ? 0x24 : 0x18;
 736 }
 737
 738 static unsigned int inline norm_fsc8(struct cx88_tvnorm *norm)
 739 {
 740         static const unsigned int ntsc = 28636360;
 741         static const unsigned int pal  = 35468950;
 742         static const unsigned int palm  = 28604892;
 743
 744         if (norm->id & V4L2_STD_PAL_M)
 745                 return palm;
 746
 747         return (norm->id & V4L2_STD_625_50) ? pal : ntsc;
 748 }
 749
 750 static unsigned int inline norm_notchfilter(struct cx88_tvnorm *norm)
 751 {
 752         return (norm->id & V4L2_STD_625_50)
 753                 ? HLNotchFilter135PAL
 754                 : HLNotchFilter135NTSC;
 755 }
 756
 757 static unsigned int inline norm_htotal(struct cx88_tvnorm *norm)
 758 {
 759         /* Should always be Line Draw Time / (4*FSC) */
 760
 761         if (norm->id & V4L2_STD_PAL_M)
 762                 return 909;
 763
 764         return (norm->id & V4L2_STD_625_50) ? 1135 : 910;
 765 }
 766
 767 static unsigned int inline norm_vbipack(struct cx88_tvnorm *norm)
 768 {
 769         return (norm->id & V4L2_STD_625_50) ? 511 : 288;
 770 }
 771
 772 int cx88_set_scale(struct cx88_core *core, unsigned int width, unsigned int height,
 773                    enum v4l2_field field)
 774 {
 775         unsigned int swidth  = norm_swidth(core->tvnorm);
 776         unsigned int sheight = norm_maxh(core->tvnorm);
 777         u32 value;
 778
 779         dprintk(1,"set_scale: %dx%d [%s%s,%s]\n", width, height,
 780                 V4L2_FIELD_HAS_TOP(field)    ? "T" : "",
 781                 V4L2_FIELD_HAS_BOTTOM(field) ? "B" : "",
 782                 core->tvnorm->name);
 783         if (!V4L2_FIELD_HAS_BOTH(field))
 784                 height *= 2;
 785
 786         // recalc H delay and scale registers
 787         value = (width * norm_hdelay(core->tvnorm)) / swidth;
 788         value &= 0x3fe;
 789         cx_write(MO_HDELAY_EVEN,  value);
 790         cx_write(MO_HDELAY_ODD,   value);
 791         dprintk(1,"set_scale: hdelay  0x%04x\n", value);
 792
 793         value = (swidth * 4096 / width) - 4096;
 794         cx_write(MO_HSCALE_EVEN,  value);
 795         cx_write(MO_HSCALE_ODD,   value);
 796         dprintk(1,"set_scale: hscale  0x%04x\n", value);
 797
 798         cx_write(MO_HACTIVE_EVEN, width);
 799         cx_write(MO_HACTIVE_ODD,  width);
 800         dprintk(1,"set_scale: hactive 0x%04x\n", width);
 801
 802         // recalc V scale Register (delay is constant)
 803         cx_write(MO_VDELAY_EVEN, norm_vdelay(core->tvnorm));
 804         cx_write(MO_VDELAY_ODD,  norm_vdelay(core->tvnorm));
 805         dprintk(1,"set_scale: vdelay  0x%04x\n", norm_vdelay(core->tvnorm));
 806
 807         value = (0x10000 - (sheight * 512 / height - 512)) & 0x1fff;
 808         cx_write(MO_VSCALE_EVEN,  value);
 809         cx_write(MO_VSCALE_ODD,   value);
 810         dprintk(1,"set_scale: vscale  0x%04x\n", value);
 811
 812         cx_write(MO_VACTIVE_EVEN, sheight);
 813         cx_write(MO_VACTIVE_ODD,  sheight);
 814         dprintk(1,"set_scale: vactive 0x%04x\n", sheight);
 815
 816         // setup filters
 817         value = 0;
 818         value |= (1 << 19);        // CFILT (default)
 819         if (core->tvnorm->id & V4L2_STD_SECAM) {
 820                 value |= (1 << 15);
 821                 value |= (1 << 16);
 822         }
 823         if (INPUT(core->input)->type == CX88_VMUX_SVIDEO)
 824                 value |= (1 << 13) | (1 << 5);
 825         if (V4L2_FIELD_INTERLACED == field)
 826                 value |= (1 << 3); // VINT (interlaced vertical scaling)
 827         if (width < 385)
 828                 value |= (1 << 0); // 3-tap interpolation
 829         if (width < 193)
 830                 value |= (1 << 1); // 5-tap interpolation
 831         if (nocomb)
 832                 value |= (3 << 5); // disable comb filter
 833
 834         cx_write(MO_FILTER_EVEN,  value);
 835         cx_write(MO_FILTER_ODD,   value);
 836         dprintk(1,"set_scale: filter  0x%04x\n", value);
 837
 838         return 0;
 839 }
 840
 841 static const u32 xtal = 28636363;
 842
 843 static int set_pll(struct cx88_core *core, int prescale, u32 ofreq)
 844 {
 845         static u32 pre[] = { 0, 0, 0, 3, 2, 1 };
 846         u64 pll;
 847         u32 reg;
 848         int i;
 849
 850         if (prescale < 2)
 851                 prescale = 2;
 852         if (prescale > 5)
 853                 prescale = 5;
 854
 855         pll = ofreq * 8 * prescale * (u64)(1 << 20);
 856         do_div(pll,xtal);
 857         reg = (pll & 0x3ffffff) | (pre[prescale] << 26);
 858         if (((reg >> 20) & 0x3f) < 14) {
 859                 printk("%s/0: pll out of range\n",core->name);
 860                 return -1;
 861         }
 862
 863         dprintk(1,"set_pll:    MO_PLL_REG       0x%08x [old=0x%08x,freq=%d]\n",
 864                 reg, cx_read(MO_PLL_REG), ofreq);
 865         cx_write(MO_PLL_REG, reg);
 866         for (i = 0; i < 100; i++) {
 867                 reg = cx_read(MO_DEVICE_STATUS);
 868                 if (reg & (1<<2)) {
 869                         dprintk(1,"pll locked [pre=%d,ofreq=%d]\n",
 870                                 prescale,ofreq);
 871                         return 0;
 872                 }
 873                 dprintk(1,"pll not locked yet, waiting ...\n");
 874                 msleep(10);
 875         }
 876         dprintk(1,"pll NOT locked [pre=%d,ofreq=%d]\n",prescale,ofreq);
 877         return -1;
 878 }
 879
 880 static int set_tvaudio(struct cx88_core *core)
 881 {
 882         struct cx88_tvnorm *norm = core->tvnorm;
 883
 884         if (CX88_VMUX_TELEVISION != INPUT(core->input)->type)
 885                 return 0;
 886
 887         if (V4L2_STD_PAL_BG & norm->id) {
 888                 core->tvaudio = nicam ? WW_NICAM_BGDKL : WW_A2_BG;
 889
 890         } else if (V4L2_STD_PAL_DK & norm->id) {
 891                 core->tvaudio = nicam ? WW_NICAM_BGDKL : WW_A2_DK;
 892
 893         } else if (V4L2_STD_PAL_I & norm->id) {
 894                 core->tvaudio = WW_NICAM_I;
 895
 896         } else if (V4L2_STD_SECAM_L & norm->id) {
 897                 core->tvaudio = WW_SYSTEM_L_AM;
 898
 899         } else if (V4L2_STD_SECAM_DK & norm->id) {
 900                 core->tvaudio = WW_A2_DK;
 901
 902         } else if ((V4L2_STD_NTSC_M & norm->id) ||
 903                    (V4L2_STD_PAL_M  & norm->id)) {
 904                 core->tvaudio = WW_BTSC;
 905
 906         } else if (V4L2_STD_NTSC_M_JP & norm->id) {
 907                 core->tvaudio = WW_EIAJ;
 908
 909         } else {
 910                 printk("%s/0: tvaudio support needs work for this tv norm [%s], sorry\n",
 911                        core->name, norm->name);
 912                 core->tvaudio = 0;
 913                 return 0;
 914         }
 915
 916         cx_andor(MO_AFECFG_IO, 0x1f, 0x0);
 917         cx88_set_tvaudio(core);
 918         // cx88_set_stereo(dev,V4L2_TUNER_MODE_STEREO);
 919
 920         cx_write(MO_AUDD_LNGTH,    128); /* fifo size */
 921         cx_write(MO_AUDR_LNGTH,    128); /* fifo size */
 922         cx_write(MO_AUD_DMACNTRL, 0x03); /* need audio fifo */
 923         return 0;
 924 }
 925
 926 int cx88_set_tvnorm(struct cx88_core *core, struct cx88_tvnorm *norm)
 927 {
 928         u32 fsc8;
 929         u32 adc_clock;
 930         u32 vdec_clock;
 931         u32 step_db,step_dr;
 932         u64 tmp64;
 933         u32 bdelay,agcdelay,htotal;
 934
 935         core->tvnorm = norm;
 936         fsc8       = norm_fsc8(norm);
 937         adc_clock  = xtal;
 938         vdec_clock = fsc8;
 939         step_db    = fsc8;
 940         step_dr    = fsc8;
 941
 942         if (norm->id & V4L2_STD_SECAM) {
 943                 step_db = 4250000 * 8;
 944                 step_dr = 4406250 * 8;
 945         }
 946
 947         dprintk(1,"set_tvnorm: \"%s\" fsc8=%d adc=%d vdec=%d db/dr=%d/%d\n",
 948                 norm->name, fsc8, adc_clock, vdec_clock, step_db, step_dr);
 949         set_pll(core,2,vdec_clock);
 950
 951         dprintk(1,"set_tvnorm: MO_INPUT_FORMAT  0x%08x [old=0x%08x]\n",
 952                 norm->cxiformat, cx_read(MO_INPUT_FORMAT) & 0x0f);
 953         cx_andor(MO_INPUT_FORMAT, 0xf, norm->cxiformat);
 954
 955 #if 1
 956         // FIXME: as-is from DScaler
 957         dprintk(1,"set_tvnorm: MO_OUTPUT_FORMAT 0x%08x [old=0x%08x]\n",
 958                 norm->cxoformat, cx_read(MO_OUTPUT_FORMAT));
 959         cx_write(MO_OUTPUT_FORMAT, norm->cxoformat);
 960 #endif
 961
 962         // MO_SCONV_REG = adc clock / video dec clock * 2^17
 963         tmp64  = adc_clock * (u64)(1 << 17);
 964         do_div(tmp64, vdec_clock);
 965         dprintk(1,"set_tvnorm: MO_SCONV_REG     0x%08x [old=0x%08x]\n",
 966                 (u32)tmp64, cx_read(MO_SCONV_REG));
 967         cx_write(MO_SCONV_REG, (u32)tmp64);
 968
 969         // MO_SUB_STEP = 8 * fsc / video dec clock * 2^22
 970         tmp64  = step_db * (u64)(1 << 22);
 971         do_div(tmp64, vdec_clock);
 972         dprintk(1,"set_tvnorm: MO_SUB_STEP      0x%08x [old=0x%08x]\n",
 973                 (u32)tmp64, cx_read(MO_SUB_STEP));
 974         cx_write(MO_SUB_STEP, (u32)tmp64);
 975
 976         // MO_SUB_STEP_DR = 8 * 4406250 / video dec clock * 2^22
 977         tmp64  = step_dr * (u64)(1 << 22);
 978         do_div(tmp64, vdec_clock);
 979         dprintk(1,"set_tvnorm: MO_SUB_STEP_DR   0x%08x [old=0x%08x]\n",
 980                 (u32)tmp64, cx_read(MO_SUB_STEP_DR));
 981         cx_write(MO_SUB_STEP_DR, (u32)tmp64);
 982
 983         // bdelay + agcdelay
 984         bdelay   = vdec_clock * 65 / 20000000 + 21;
 985         agcdelay = vdec_clock * 68 / 20000000 + 15;
 986         dprintk(1,"set_tvnorm: MO_AGC_BURST     0x%08x [old=0x%08x,bdelay=%d,agcdelay=%d]\n",
 987                 (bdelay << 8) | agcdelay, cx_read(MO_AGC_BURST), bdelay, agcdelay);
 988         cx_write(MO_AGC_BURST, (bdelay << 8) | agcdelay);
 989
 990         // htotal
 991         tmp64 = norm_htotal(norm) * (u64)vdec_clock;
 992         do_div(tmp64, fsc8);
 993         htotal = (u32)tmp64 | (norm_notchfilter(norm) << 11);
 994         dprintk(1,"set_tvnorm: MO_HTOTAL        0x%08x [old=0x%08x,htotal=%d]\n",
 995                 htotal, cx_read(MO_HTOTAL), (u32)tmp64);
 996         cx_write(MO_HTOTAL, htotal);
 997
 998         // vbi stuff
 999         cx_write(MO_VBI_PACKET, ((1 << 11) | /* (norm_vdelay(norm)   << 11) | */
1000                                  norm_vbipack(norm)));
1001
1002         // this is needed as well to set all tvnorm parameter
1003         cx88_set_scale(core, 320, 240, V4L2_FIELD_INTERLACED);
1004
1005         // audio
1006         set_tvaudio(core);
1007
1008         // tell i2c chips
1009 #ifdef V4L2_I2C_CLIENTS
1010         cx88_call_i2c_clients(core,VIDIOC_S_STD,&norm->id);
1011 #else
1012         {
1013                 struct video_channel c;
1014                 memset(&c,0,sizeof(c));
1015                 c.channel = core->input;
1016                 c.norm = VIDEO_MODE_PAL;
1017                 if ((norm->id & (V4L2_STD_NTSC_M|V4L2_STD_NTSC_M_JP)))
1018                         c.norm = VIDEO_MODE_NTSC;
1019                 if (norm->id & V4L2_STD_SECAM)
1020                         c.norm = VIDEO_MODE_SECAM;
1021                 cx88_call_i2c_clients(core,VIDIOCSCHAN,&c);
1022         }
1023 #endif
1024
1025         // done
1026         return 0;
1027 }
1028
1029 /* ------------------------------------------------------------------ */
1030
1031 static int cx88_pci_quirks(char *name, struct pci_dev *pci)
1032 {
1033         unsigned int lat = UNSET;
1034         u8 ctrl = 0;
1035         u8 value;
1036
1037         /* check pci quirks */
1038         if (pci_pci_problems & PCIPCI_TRITON) {
1039                 printk(KERN_INFO "%s: quirk: PCIPCI_TRITON -- set TBFX\n",
1040                        name);
1041                 ctrl |= CX88X_EN_TBFX;
1042         }
1043         if (pci_pci_problems & PCIPCI_NATOMA) {
1044                 printk(KERN_INFO "%s: quirk: PCIPCI_NATOMA -- set TBFX\n",
1045                        name);
1046                 ctrl |= CX88X_EN_TBFX;
1047         }
1048         if (pci_pci_problems & PCIPCI_VIAETBF) {
1049                 printk(KERN_INFO "%s: quirk: PCIPCI_VIAETBF -- set TBFX\n",
1050                        name);
1051                 ctrl |= CX88X_EN_TBFX;
1052         }
1053         if (pci_pci_problems & PCIPCI_VSFX) {
1054                 printk(KERN_INFO "%s: quirk: PCIPCI_VSFX -- set VSFX\n",
1055                        name);
1056                 ctrl |= CX88X_EN_VSFX;
1057         }
1058 #ifdef PCIPCI_ALIMAGIK
1059         if (pci_pci_problems & PCIPCI_ALIMAGIK) {
1060                 printk(KERN_INFO "%s: quirk: PCIPCI_ALIMAGIK -- latency fixup\n",
1061                        name);
1062                 lat = 0x0A;
1063         }
1064 #endif
1065
1066         /* check insmod options */
1067         if (UNSET != latency)
1068                 lat = latency;
1069
1070         /* apply stuff */
1071         if (ctrl) {
1072                 pci_read_config_byte(pci, CX88X_DEVCTRL, &value);
1073                 value |= ctrl;
1074                 pci_write_config_byte(pci, CX88X_DEVCTRL, value);
1075         }
1076         if (UNSET != lat) {
1077                 printk(KERN_INFO "%s: setting pci latency timer to %d\n",
1078                        name, latency);
1079                 pci_write_config_byte(pci, PCI_LATENCY_TIMER, latency);
1080         }
1081         return 0;
1082 }
1083
1084 /* ------------------------------------------------------------------ */
1085
1086 struct video_device *cx88_vdev_init(struct cx88_core *core,
1087                                     struct pci_dev *pci,
1088                                     struct video_device *template,
1089                                     char *type)
1090 {
1091         struct video_device *vfd;
1092
1093         vfd = video_device_alloc();
1094         if (NULL == vfd)
1095                 return NULL;
1096         *vfd = *template;
1097         vfd->minor   = -1;
1098         vfd->dev     = &pci->dev;
1099         vfd->release = video_device_release;
1100         snprintf(vfd->name, sizeof(vfd->name), "%s %s (%s)",
1101                  core->name, type, cx88_boards[core->board].name);
1102         return vfd;
1103 }
1104
1105 static int get_ressources(struct cx88_core *core, struct pci_dev *pci)
1106 {
1107         if (request_mem_region(pci_resource_start(pci,0),
1108                                pci_resource_len(pci,0),
1109                                core->name))
1110                 return 0;
1111         printk(KERN_ERR "%s: can't get MMIO memory @ 0x%lx\n",
1112                core->name,pci_resource_start(pci,0));
1113         return -EBUSY;
1114 }
1115
1116 struct cx88_core* cx88_core_get(struct pci_dev *pci)
1117 {
1118         struct cx88_core *core;
1119         struct list_head *item;
1120         int i;
1121
1122         down(&devlist);
1123         list_for_each(item,&cx88_devlist) {
1124                 core = list_entry(item, struct cx88_core, devlist);
1125                 if (pci->bus->number != core->pci_bus)
1126                         continue;
1127                 if (PCI_SLOT(pci->devfn) != core->pci_slot)
1128                         continue;
1129
1130                 if (0 != get_ressources(core,pci))
1131                         goto fail_unlock;
1132                 atomic_inc(&core->refcount);
1133                 up(&devlist);
1134                 return core;
1135         }
1136         core = kmalloc(sizeof(*core),GFP_KERNEL);
1137         if (NULL == core)
1138                 goto fail_unlock;
1139
1140         memset(core,0,sizeof(*core));
1141         atomic_inc(&core->refcount);
1142         core->pci_bus  = pci->bus->number;
1143         core->pci_slot = PCI_SLOT(pci->devfn);
1144         core->pci_irqmask = 0x00fc00;
1145
1146         core->nr = cx88_devcount++;
1147         sprintf(core->name,"cx88[%d]",core->nr);
1148         if (0 != get_ressources(core,pci)) {
1149                 cx88_devcount--;
1150                 goto fail_free;
1151         }
1152         list_add_tail(&core->devlist,&cx88_devlist);
1153
1154         /* PCI stuff */
1155         cx88_pci_quirks(core->name, pci);
1156         core->lmmio = ioremap(pci_resource_start(pci,0),
1157                               pci_resource_len(pci,0));
1158         core->bmmio = (u8 __iomem *)core->lmmio;
1159
1160         /* board config */
1161         core->board = UNSET;
1162         if (card[core->nr] < cx88_bcount)
1163                 core->board = card[core->nr];
1164         for (i = 0; UNSET == core->board  &&  i < cx88_idcount; i++)
1165                 if (pci->subsystem_vendor == cx88_subids[i].subvendor &&
1166                     pci->subsystem_device == cx88_subids[i].subdevice)
1167                         core->board = cx88_subids[i].card;
1168         if (UNSET == core->board) {
1169                 core->board = CX88_BOARD_UNKNOWN;
1170                 cx88_card_list(core,pci);
1171         }
1172         printk(KERN_INFO "%s: subsystem: %04x:%04x, board: %s [card=%d,%s]\n",
1173                core->name,pci->subsystem_vendor,
1174                pci->subsystem_device,cx88_boards[core->board].name,
1175                core->board, card[core->nr] == core->board ?
1176                "insmod option" : "autodetected");
1177
1178         core->tuner_type = tuner[core->nr];
1179         core->radio_type = radio[core->nr];
1180         if (UNSET == core->tuner_type)
1181                 core->tuner_type = cx88_boards[core->board].tuner_type;
1182         if (UNSET == core->radio_type)
1183                 core->radio_type = cx88_boards[core->board].radio_type;
1184         if (!core->tuner_addr)
1185                 core->tuner_addr = cx88_boards[core->board].tuner_addr;
1186         if (!core->radio_addr)
1187                 core->radio_addr = cx88_boards[core->board].radio_addr;
1188
1189         printk(KERN_INFO "TV tuner %d at 0x%02x, Radio tuner %d at 0x%02x\n",
1190                 core->tuner_type, core->tuner_addr<<1,
1191                 core->radio_type, core->radio_addr<<1);
1192
1193         core->tda9887_conf = cx88_boards[core->board].tda9887_conf;
1194
1195         /* init hardware */
1196         cx88_reset(core);
1197         cx88_i2c_init(core,pci);
1198         cx88_card_setup(core);
1199         cx88_ir_init(core,pci);
1200
1201         up(&devlist);
1202         return core;
1203
1204 fail_free:
1205         kfree(core);
1206 fail_unlock:
1207         up(&devlist);
1208         return NULL;
1209 }
1210
1211 void cx88_core_put(struct cx88_core *core, struct pci_dev *pci)
1212 {
1213         release_mem_region(pci_resource_start(pci,0),
1214                            pci_resource_len(pci,0));
1215
1216         if (!atomic_dec_and_test(&core->refcount))
1217                 return;
1218
1219         down(&devlist);
1220         cx88_ir_fini(core);
1221         if (0 == core->i2c_rc)
1222                 i2c_bit_del_bus(&core->i2c_adap);
1223         list_del(&core->devlist);
1224         iounmap(core->lmmio);
1225         cx88_devcount--;
1226         up(&devlist);
1227         kfree(core);
1228 }
1229
1230 /* ------------------------------------------------------------------ */
1231
1232 EXPORT_SYMBOL(cx88_print_ioctl);
1233 EXPORT_SYMBOL(cx88_vid_irqs);
1234 EXPORT_SYMBOL(cx88_mpeg_irqs);
1235 EXPORT_SYMBOL(cx88_print_irqbits);
1236
1237 EXPORT_SYMBOL(cx88_core_irq);
1238 EXPORT_SYMBOL(cx88_wakeup);
1239 EXPORT_SYMBOL(cx88_reset);
1240 EXPORT_SYMBOL(cx88_shutdown);
1241
1242 EXPORT_SYMBOL(cx88_risc_buffer);
1243 EXPORT_SYMBOL(cx88_risc_databuffer);
1244 EXPORT_SYMBOL(cx88_risc_stopper);
1245 EXPORT_SYMBOL(cx88_free_buffer);
1246
1247 EXPORT_SYMBOL(cx88_sram_channels);
1248 EXPORT_SYMBOL(cx88_sram_channel_setup);
1249 EXPORT_SYMBOL(cx88_sram_channel_dump);
1250
1251 EXPORT_SYMBOL(cx88_set_tvnorm);
1252 EXPORT_SYMBOL(cx88_set_scale);
1253
1254 EXPORT_SYMBOL(cx88_vdev_init);
1255 EXPORT_SYMBOL(cx88_core_get);
1256 EXPORT_SYMBOL(cx88_core_put);
1257
1258 /*
1259  * Local variables:
1260  * c-basic-offset: 8
1261  * End:
1262  */