drivers/media/video/saa7134/saa7134-core.c

   1 /*
   2  *
   3  * device driver for philips saa7134 based TV cards
   4  * driver core
   5  *
   6  * (c) 2001-03 Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]
   7  *
   8  *  This program is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License as published by
  10  *  the Free Software Foundation; either version 2 of the License, or
  11  *  (at your option) any later version.
  12  *
  13  *  This program is distributed in the hope that it will be useful,
  14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *  GNU General Public License for more details.
  17  *
  18  *  You should have received a copy of the GNU General Public License
  19  *  along with this program; if not, write to the Free Software
  20  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  21  */
  22
  23 #include <linux/config.h>
  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/delay.h>
  34 #include <linux/mutex.h>
  35
  36 #include "saa7134-reg.h"
  37 #include "saa7134.h"
  38
  39 MODULE_DESCRIPTION("v4l2 driver module for saa7130/34 based TV cards");
  40 MODULE_AUTHOR("Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]");
  41 MODULE_LICENSE("GPL");
  42
  43 /* ------------------------------------------------------------------ */
  44
  45 static unsigned int irq_debug = 0;
  46 module_param(irq_debug, int, 0644);
  47 MODULE_PARM_DESC(irq_debug,"enable debug messages [IRQ handler]");
  48
  49 static unsigned int core_debug = 0;
  50 module_param(core_debug, int, 0644);
  51 MODULE_PARM_DESC(core_debug,"enable debug messages [core]");
  52
  53 static unsigned int gpio_tracking = 0;
  54 module_param(gpio_tracking, int, 0644);
  55 MODULE_PARM_DESC(gpio_tracking,"enable debug messages [gpio]");
  56
  57 static unsigned int alsa = 0;
  58 module_param(alsa, int, 0644);
  59 MODULE_PARM_DESC(alsa,"enable ALSA DMA sound [dmasound]");
  60
  61 static unsigned int oss = 0;
  62 module_param(oss, int, 0644);
  63 MODULE_PARM_DESC(oss,"enable OSS DMA sound [dmasound]");
  64
  65 static unsigned int latency = UNSET;
  66 module_param(latency, int, 0444);
  67 MODULE_PARM_DESC(latency,"pci latency timer");
  68
  69 static unsigned int video_nr[] = {[0 ... (SAA7134_MAXBOARDS - 1)] = UNSET };
  70 static unsigned int vbi_nr[]   = {[0 ... (SAA7134_MAXBOARDS - 1)] = UNSET };
  71 static unsigned int radio_nr[] = {[0 ... (SAA7134_MAXBOARDS - 1)] = UNSET };
  72 static unsigned int tuner[]    = {[0 ... (SAA7134_MAXBOARDS - 1)] = UNSET };
  73 static unsigned int card[]     = {[0 ... (SAA7134_MAXBOARDS - 1)] = UNSET };
  74
  75
  76 module_param_array(video_nr, int, NULL, 0444);
  77 module_param_array(vbi_nr,   int, NULL, 0444);
  78 module_param_array(radio_nr, int, NULL, 0444);
  79 module_param_array(tuner,    int, NULL, 0444);
  80 module_param_array(card,     int, NULL, 0444);
  81
  82 MODULE_PARM_DESC(video_nr, "video device number");
  83 MODULE_PARM_DESC(vbi_nr,   "vbi device number");
  84 MODULE_PARM_DESC(radio_nr, "radio device number");
  85 MODULE_PARM_DESC(tuner,    "tuner type");
  86 MODULE_PARM_DESC(card,     "card type");
  87
  88 static DEFINE_MUTEX(devlist_lock);
  89 LIST_HEAD(saa7134_devlist);
  90 static LIST_HEAD(mops_list);
  91 static unsigned int saa7134_devcount;
  92
  93 int (*dmasound_init)(struct saa7134_dev *dev);
  94 int (*dmasound_exit)(struct saa7134_dev *dev);
  95
  96 #define dprintk(fmt, arg...)    if (core_debug) \
  97         printk(KERN_DEBUG "%s/core: " fmt, dev->name , ## arg)
  98
  99 void saa7134_track_gpio(struct saa7134_dev *dev, char *msg)
 100 {
 101         unsigned long mode,status;
 102
 103         if (!gpio_tracking)
 104                 return;
 105         /* rising SAA7134_GPIO_GPRESCAN reads the status */
 106         saa_andorb(SAA7134_GPIO_GPMODE3,SAA7134_GPIO_GPRESCAN,0);
 107         saa_andorb(SAA7134_GPIO_GPMODE3,SAA7134_GPIO_GPRESCAN,SAA7134_GPIO_GPRESCAN);
 108         mode   = saa_readl(SAA7134_GPIO_GPMODE0   >> 2) & 0xfffffff;
 109         status = saa_readl(SAA7134_GPIO_GPSTATUS0 >> 2) & 0xfffffff;
 110         printk(KERN_DEBUG
 111                "%s: gpio: mode=0x%07lx in=0x%07lx out=0x%07lx [%s]\n",
 112                dev->name, mode, (~mode) & status, mode & status, msg);
 113 }
 114
 115 /* ------------------------------------------------------------------ */
 116
 117
 118 /* ----------------------------------------------------------- */
 119 /* delayed request_module                                      */
 120
 121 #if defined(CONFIG_MODULES) && defined(MODULE)
 122 static int need_empress;
 123 static int need_dvb;
 124 static int need_alsa;
 125 static int need_oss;
 126
 127 static int pending_call(struct notifier_block *self, unsigned long state,
 128                         void *module)
 129 {
 130         if (module != THIS_MODULE || state != MODULE_STATE_LIVE)
 131                 return NOTIFY_DONE;
 132
 133         if (need_empress)
 134                 request_module("saa7134-empress");
 135         if (need_dvb)
 136                 request_module("saa7134-dvb");
 137         if (need_alsa)
 138                 request_module("saa7134-alsa");
 139         if (need_oss)
 140                 request_module("saa7134-oss");
 141         return NOTIFY_DONE;
 142 }
 143
 144 static int pending_registered;
 145 static struct notifier_block pending_notifier = {
 146         .notifier_call = pending_call,
 147 };
 148
 149 static void request_module_depend(char *name, int *flag)
 150 {
 151         int err;
 152         switch (THIS_MODULE->state) {
 153         case MODULE_STATE_COMING:
 154                 if (!pending_registered) {
 155                         err = register_module_notifier(&pending_notifier);
 156                         pending_registered = 1;
 157                 }
 158                 *flag = 1;
 159                 break;
 160         case MODULE_STATE_LIVE:
 161                 request_module(name);
 162                 break;
 163         default:
 164                 /* nothing */;
 165                 break;
 166         }
 167 }
 168
 169 #else
 170 #define request_module_depend(name,flag)
 171 #endif /* CONFIG_MODULES */
 172
 173 /* ------------------------------------------------------------------ */
 174
 175 /* nr of (saa7134-)pages for the given buffer size */
 176 static int saa7134_buffer_pages(int size)
 177 {
 178         size  = PAGE_ALIGN(size);
 179         size += PAGE_SIZE; /* for non-page-aligned buffers */
 180         size /= 4096;
 181         return size;
 182 }
 183
 184 /* calc max # of buffers from size (must not exceed the 4MB virtual
 185  * address space per DMA channel) */
 186 int saa7134_buffer_count(unsigned int size, unsigned int count)
 187 {
 188         unsigned int maxcount;
 189
 190         maxcount = 1024 / saa7134_buffer_pages(size);
 191         if (count > maxcount)
 192                 count = maxcount;
 193         return count;
 194 }
 195
 196 int saa7134_buffer_startpage(struct saa7134_buf *buf)
 197 {
 198         return saa7134_buffer_pages(buf->vb.bsize) * buf->vb.i;
 199 }
 200
 201 unsigned long saa7134_buffer_base(struct saa7134_buf *buf)
 202 {
 203         unsigned long base;
 204
 205         base  = saa7134_buffer_startpage(buf) * 4096;
 206         base += buf->vb.dma.sglist[0].offset;
 207         return base;
 208 }
 209
 210 /* ------------------------------------------------------------------ */
 211
 212 int saa7134_pgtable_alloc(struct pci_dev *pci, struct saa7134_pgtable *pt)
 213 {
 214         __le32       *cpu;
 215         dma_addr_t   dma_addr;
 216
 217         cpu = pci_alloc_consistent(pci, SAA7134_PGTABLE_SIZE, &dma_addr);
 218         if (NULL == cpu)
 219                 return -ENOMEM;
 220         pt->size = SAA7134_PGTABLE_SIZE;
 221         pt->cpu  = cpu;
 222         pt->dma  = dma_addr;
 223         return 0;
 224 }
 225
 226 int saa7134_pgtable_build(struct pci_dev *pci, struct saa7134_pgtable *pt,
 227                           struct scatterlist *list, unsigned int length,
 228                           unsigned int startpage)
 229 {
 230         __le32        *ptr;
 231         unsigned int  i,p;
 232
 233         BUG_ON(NULL == pt || NULL == pt->cpu);
 234
 235         ptr = pt->cpu + startpage;
 236         for (i = 0; i < length; i++, list++)
 237                 for (p = 0; p * 4096 < list->length; p++, ptr++)
 238                         *ptr = cpu_to_le32(sg_dma_address(list) - list->offset);
 239         return 0;
 240 }
 241
 242 void saa7134_pgtable_free(struct pci_dev *pci, struct saa7134_pgtable *pt)
 243 {
 244         if (NULL == pt->cpu)
 245                 return;
 246         pci_free_consistent(pci, pt->size, pt->cpu, pt->dma);
 247         pt->cpu = NULL;
 248 }
 249
 250 /* ------------------------------------------------------------------ */
 251
 252 void saa7134_dma_free(struct saa7134_dev *dev,struct saa7134_buf *buf)
 253 {
 254         if (in_interrupt())
 255                 BUG();
 256
 257         videobuf_waiton(&buf->vb,0,0);
 258         videobuf_dma_pci_unmap(dev->pci, &buf->vb.dma);
 259         videobuf_dma_free(&buf->vb.dma);
 260         buf->vb.state = STATE_NEEDS_INIT;
 261 }
 262
 263 /* ------------------------------------------------------------------ */
 264
 265 int saa7134_buffer_queue(struct saa7134_dev *dev,
 266                          struct saa7134_dmaqueue *q,
 267                          struct saa7134_buf *buf)
 268 {
 269         struct saa7134_buf *next = NULL;
 270
 271         assert_spin_locked(&dev->slock);
 272         dprintk("buffer_queue %p\n",buf);
 273         if (NULL == q->curr) {
 274                 if (!q->need_two) {
 275                         q->curr = buf;
 276                         buf->activate(dev,buf,NULL);
 277                 } else if (list_empty(&q->queue)) {
 278                         list_add_tail(&buf->vb.queue,&q->queue);
 279                         buf->vb.state = STATE_QUEUED;
 280                 } else {
 281                         next = list_entry(q->queue.next,struct saa7134_buf,
 282                                           vb.queue);
 283                         q->curr = buf;
 284                         buf->activate(dev,buf,next);
 285                 }
 286         } else {
 287                 list_add_tail(&buf->vb.queue,&q->queue);
 288                 buf->vb.state = STATE_QUEUED;
 289         }
 290         return 0;
 291 }
 292
 293 void saa7134_buffer_finish(struct saa7134_dev *dev,
 294                            struct saa7134_dmaqueue *q,
 295                            unsigned int state)
 296 {
 297         assert_spin_locked(&dev->slock);
 298         dprintk("buffer_finish %p\n",q->curr);
 299
 300         /* finish current buffer */
 301         q->curr->vb.state = state;
 302         do_gettimeofday(&q->curr->vb.ts);
 303         wake_up(&q->curr->vb.done);
 304         q->curr = NULL;
 305 }
 306
 307 void saa7134_buffer_next(struct saa7134_dev *dev,
 308                          struct saa7134_dmaqueue *q)
 309 {
 310         struct saa7134_buf *buf,*next = NULL;
 311
 312         assert_spin_locked(&dev->slock);
 313         BUG_ON(NULL != q->curr);
 314
 315         if (!list_empty(&q->queue)) {
 316                 /* activate next one from queue */
 317                 buf = list_entry(q->queue.next,struct saa7134_buf,vb.queue);
 318                 dprintk("buffer_next %p [prev=%p/next=%p]\n",
 319                         buf,q->queue.prev,q->queue.next);
 320                 list_del(&buf->vb.queue);
 321                 if (!list_empty(&q->queue))
 322                         next = list_entry(q->queue.next,struct saa7134_buf,
 323                                           vb.queue);
 324                 q->curr = buf;
 325                 buf->activate(dev,buf,next);
 326                 dprintk("buffer_next #2 prev=%p/next=%p\n",
 327                         q->queue.prev,q->queue.next);
 328         } else {
 329                 /* nothing to do -- just stop DMA */
 330                 dprintk("buffer_next %p\n",NULL);
 331                 saa7134_set_dmabits(dev);
 332                 del_timer(&q->timeout);
 333         }
 334 }
 335
 336 void saa7134_buffer_timeout(unsigned long data)
 337 {
 338         struct saa7134_dmaqueue *q = (struct saa7134_dmaqueue*)data;
 339         struct saa7134_dev *dev = q->dev;
 340         unsigned long flags;
 341
 342         spin_lock_irqsave(&dev->slock,flags);
 343
 344         /* try to reset the hardware (SWRST) */
 345         saa_writeb(SAA7134_REGION_ENABLE, 0x00);
 346         saa_writeb(SAA7134_REGION_ENABLE, 0x80);
 347         saa_writeb(SAA7134_REGION_ENABLE, 0x00);
 348
 349         /* flag current buffer as failed,
 350            try to start over with the next one. */
 351         if (q->curr) {
 352                 dprintk("timeout on %p\n",q->curr);
 353                 saa7134_buffer_finish(dev,q,STATE_ERROR);
 354         }
 355         saa7134_buffer_next(dev,q);
 356         spin_unlock_irqrestore(&dev->slock,flags);
 357 }
 358
 359 /* ------------------------------------------------------------------ */
 360
 361 int saa7134_set_dmabits(struct saa7134_dev *dev)
 362 {
 363         u32 split, task=0, ctrl=0, irq=0;
 364         enum v4l2_field cap = V4L2_FIELD_ANY;
 365         enum v4l2_field ov  = V4L2_FIELD_ANY;
 366
 367         assert_spin_locked(&dev->slock);
 368
 369         /* video capture -- dma 0 + video task A */
 370         if (dev->video_q.curr) {
 371                 task |= 0x01;
 372                 ctrl |= SAA7134_MAIN_CTRL_TE0;
 373                 irq  |= SAA7134_IRQ1_INTE_RA0_1 |
 374                         SAA7134_IRQ1_INTE_RA0_0;
 375                 cap = dev->video_q.curr->vb.field;
 376         }
 377
 378         /* video capture -- dma 1+2 (planar modes) */
 379         if (dev->video_q.curr &&
 380             dev->video_q.curr->fmt->planar) {
 381                 ctrl |= SAA7134_MAIN_CTRL_TE4 |
 382                         SAA7134_MAIN_CTRL_TE5;
 383         }
 384
 385         /* screen overlay -- dma 0 + video task B */
 386         if (dev->ovenable) {
 387                 task |= 0x10;
 388                 ctrl |= SAA7134_MAIN_CTRL_TE1;
 389                 ov = dev->ovfield;
 390         }
 391
 392         /* vbi capture -- dma 0 + vbi task A+B */
 393         if (dev->vbi_q.curr) {
 394                 task |= 0x22;
 395                 ctrl |= SAA7134_MAIN_CTRL_TE2 |
 396                         SAA7134_MAIN_CTRL_TE3;
 397                 irq  |= SAA7134_IRQ1_INTE_RA0_7 |
 398                         SAA7134_IRQ1_INTE_RA0_6 |
 399                         SAA7134_IRQ1_INTE_RA0_5 |
 400                         SAA7134_IRQ1_INTE_RA0_4;
 401         }
 402
 403         /* audio capture -- dma 3 */
 404         if (dev->dmasound.dma_running) {
 405                 ctrl |= SAA7134_MAIN_CTRL_TE6;
 406                 irq  |= SAA7134_IRQ1_INTE_RA3_1 |
 407                         SAA7134_IRQ1_INTE_RA3_0;
 408         }
 409
 410         /* TS capture -- dma 5 */
 411         if (dev->ts_q.curr) {
 412                 ctrl |= SAA7134_MAIN_CTRL_TE5;
 413                 irq  |= SAA7134_IRQ1_INTE_RA2_3 |
 414                         SAA7134_IRQ1_INTE_RA2_2 |
 415                         SAA7134_IRQ1_INTE_RA2_1 |
 416                         SAA7134_IRQ1_INTE_RA2_0;
 417         }
 418
 419         /* set task conditions + field handling */
 420         if (V4L2_FIELD_HAS_BOTH(cap) || V4L2_FIELD_HAS_BOTH(ov) || cap == ov) {
 421                 /* default config -- use full frames */
 422                 saa_writeb(SAA7134_TASK_CONDITIONS(TASK_A), 0x0d);
 423                 saa_writeb(SAA7134_TASK_CONDITIONS(TASK_B), 0x0d);
 424                 saa_writeb(SAA7134_FIELD_HANDLING(TASK_A),  0x02);
 425                 saa_writeb(SAA7134_FIELD_HANDLING(TASK_B),  0x02);
 426                 split = 0;
 427         } else {
 428                 /* split fields between tasks */
 429                 if (V4L2_FIELD_TOP == cap) {
 430                         /* odd A, even B, repeat */
 431                         saa_writeb(SAA7134_TASK_CONDITIONS(TASK_A), 0x0d);
 432                         saa_writeb(SAA7134_TASK_CONDITIONS(TASK_B), 0x0e);
 433                 } else {
 434                         /* odd B, even A, repeat */
 435                         saa_writeb(SAA7134_TASK_CONDITIONS(TASK_A), 0x0e);
 436                         saa_writeb(SAA7134_TASK_CONDITIONS(TASK_B), 0x0d);
 437                 }
 438                 saa_writeb(SAA7134_FIELD_HANDLING(TASK_A),  0x01);
 439                 saa_writeb(SAA7134_FIELD_HANDLING(TASK_B),  0x01);
 440                 split = 1;
 441         }
 442
 443         /* irqs */
 444         saa_writeb(SAA7134_REGION_ENABLE, task);
 445         saa_writel(SAA7134_IRQ1,          irq);
 446         saa_andorl(SAA7134_MAIN_CTRL,
 447                    SAA7134_MAIN_CTRL_TE0 |
 448                    SAA7134_MAIN_CTRL_TE1 |
 449                    SAA7134_MAIN_CTRL_TE2 |
 450                    SAA7134_MAIN_CTRL_TE3 |
 451                    SAA7134_MAIN_CTRL_TE4 |
 452                    SAA7134_MAIN_CTRL_TE5 |
 453                    SAA7134_MAIN_CTRL_TE6,
 454                    ctrl);
 455         dprintk("dmabits: task=0x%02x ctrl=0x%02x irq=0x%x split=%s\n",
 456                 task, ctrl, irq, split ? "no" : "yes");
 457
 458         return 0;
 459 }
 460
 461 /* ------------------------------------------------------------------ */
 462 /* IRQ handler + helpers                                              */
 463
 464 static char *irqbits[] = {
 465         "DONE_RA0", "DONE_RA1", "DONE_RA2", "DONE_RA3",
 466         "AR", "PE", "PWR_ON", "RDCAP", "INTL", "FIDT", "MMC",
 467         "TRIG_ERR", "CONF_ERR", "LOAD_ERR",
 468         "GPIO16?", "GPIO18", "GPIO22", "GPIO23"
 469 };
 470 #define IRQBITS ARRAY_SIZE(irqbits)
 471
 472 static void print_irqstatus(struct saa7134_dev *dev, int loop,
 473                             unsigned long report, unsigned long status)
 474 {
 475         unsigned int i;
 476
 477         printk(KERN_DEBUG "%s/irq[%d,%ld]: r=0x%lx s=0x%02lx",
 478                dev->name,loop,jiffies,report,status);
 479         for (i = 0; i < IRQBITS; i++) {
 480                 if (!(report & (1 << i)))
 481                         continue;
 482                 printk(" %s",irqbits[i]);
 483         }
 484         if (report & SAA7134_IRQ_REPORT_DONE_RA0) {
 485                 printk(" | RA0=%s,%s,%s,%ld",
 486                        (status & 0x40) ? "vbi"  : "video",
 487                        (status & 0x20) ? "b"    : "a",
 488                        (status & 0x10) ? "odd"  : "even",
 489                        (status & 0x0f));
 490         }
 491         printk("\n");
 492 }
 493
 494 static irqreturn_t saa7134_irq(int irq, void *dev_id, struct pt_regs *regs)
 495 {
 496         struct saa7134_dev *dev = (struct saa7134_dev*) dev_id;
 497         unsigned long report,status;
 498         int loop, handled = 0;
 499
 500         for (loop = 0; loop < 10; loop++) {
 501                 report = saa_readl(SAA7134_IRQ_REPORT);
 502                 status = saa_readl(SAA7134_IRQ_STATUS);
 503                 if (0 == report) {
 504                         if (irq_debug > 1)
 505                                 printk(KERN_DEBUG "%s/irq: no (more) work\n",
 506                                        dev->name);
 507                         goto out;
 508                 }
 509
 510                 /* If dmasound support is active and we get a sound report, exit
 511                    and let the saa7134-alsa/oss module deal with it */
 512
 513                 if ((report & SAA7134_IRQ_REPORT_DONE_RA3) &&
 514                         (dev->dmasound.priv_data != NULL) )
 515                 {
 516                         if (irq_debug > 1)
 517                                 printk(KERN_DEBUG "%s/irq: ignoring interrupt for DMA sound\n",
 518                                        dev->name);
 519                         goto out;
 520                 }
 521
 522                 handled = 1;
 523                 saa_writel(SAA7134_IRQ_REPORT,report);
 524                 if (irq_debug)
 525                         print_irqstatus(dev,loop,report,status);
 526
 527
 528                 if (report & SAA7134_IRQ_REPORT_RDCAP /* _INTL */)
 529                         saa7134_irq_video_intl(dev);
 530
 531                 if ((report & SAA7134_IRQ_REPORT_DONE_RA0) &&
 532                     (status & 0x60) == 0)
 533                         saa7134_irq_video_done(dev,status);
 534
 535                 if ((report & SAA7134_IRQ_REPORT_DONE_RA0) &&
 536                     (status & 0x40) == 0x40)
 537                         saa7134_irq_vbi_done(dev,status);
 538
 539                 if ((report & SAA7134_IRQ_REPORT_DONE_RA2) &&
 540                     card_has_mpeg(dev))
 541                         saa7134_irq_ts_done(dev,status);
 542
 543                 if (report & SAA7134_IRQ_REPORT_GPIO16) {
 544                         switch (dev->has_remote) {
 545                                 case SAA7134_REMOTE_GPIO:
 546                                         if  (dev->remote->mask_keydown & 0x10000) {
 547                                                 saa7134_input_irq(dev);
 548                                         }
 549                                         break;
 550
 551                                 case SAA7134_REMOTE_I2C:
 552                                         break;                  /* FIXME: invoke I2C get_key() */
 553
 554                                 default:                        /* GPIO16 not used by IR remote */
 555                                         break;
 556                         }
 557                 }
 558
 559                 if (report & SAA7134_IRQ_REPORT_GPIO18) {
 560                         switch (dev->has_remote) {
 561                                 case SAA7134_REMOTE_GPIO:
 562                                         if ((dev->remote->mask_keydown & 0x40000) ||
 563                                             (dev->remote->mask_keyup & 0x40000)) {
 564                                                 saa7134_input_irq(dev);
 565                                         }
 566                                         break;
 567
 568                                 case SAA7134_REMOTE_I2C:
 569                                         break;                  /* FIXME: invoke I2C get_key() */
 570
 571                                 default:                        /* GPIO18 not used by IR remote */
 572                                         break;
 573                         }
 574                 }
 575         }
 576
 577         if (10 == loop) {
 578                 print_irqstatus(dev,loop,report,status);
 579                 if (report & SAA7134_IRQ_REPORT_PE) {
 580                         /* disable all parity error */
 581                         printk(KERN_WARNING "%s/irq: looping -- "
 582                                "clearing PE (parity error!) enable bit\n",dev->name);
 583                         saa_clearl(SAA7134_IRQ2,SAA7134_IRQ2_INTE_PE);
 584                 } else if (report & SAA7134_IRQ_REPORT_GPIO16) {
 585                         /* disable gpio16 IRQ */
 586                         printk(KERN_WARNING "%s/irq: looping -- "
 587                                "clearing GPIO16 enable bit\n",dev->name);
 588                         saa_clearl(SAA7134_IRQ2, SAA7134_IRQ2_INTE_GPIO16);
 589                 } else if (report & SAA7134_IRQ_REPORT_GPIO18) {
 590                         /* disable gpio18 IRQs */
 591                         printk(KERN_WARNING "%s/irq: looping -- "
 592                                "clearing GPIO18 enable bit\n",dev->name);
 593                         saa_clearl(SAA7134_IRQ2, SAA7134_IRQ2_INTE_GPIO18);
 594                 } else {
 595                         /* disable all irqs */
 596                         printk(KERN_WARNING "%s/irq: looping -- "
 597                                "clearing all enable bits\n",dev->name);
 598                         saa_writel(SAA7134_IRQ1,0);
 599                         saa_writel(SAA7134_IRQ2,0);
 600                 }
 601         }
 602
 603  out:
 604         return IRQ_RETVAL(handled);
 605 }
 606
 607 /* ------------------------------------------------------------------ */
 608
 609 /* early init (no i2c, no irq) */
 610 static int saa7134_hwinit1(struct saa7134_dev *dev)
 611 {
 612         dprintk("hwinit1\n");
 613
 614         saa_writel(SAA7134_IRQ1, 0);
 615         saa_writel(SAA7134_IRQ2, 0);
 616         mutex_init(&dev->lock);
 617         spin_lock_init(&dev->slock);
 618
 619         saa7134_track_gpio(dev,"pre-init");
 620         saa7134_video_init1(dev);
 621         saa7134_vbi_init1(dev);
 622         if (card_has_mpeg(dev))
 623                 saa7134_ts_init1(dev);
 624         saa7134_input_init1(dev);
 625
 626         /* RAM FIFO config */
 627         saa_writel(SAA7134_FIFO_SIZE, 0x08070503);
 628         saa_writel(SAA7134_THRESHOULD,0x02020202);
 629
 630         /* enable audio + video processing */
 631         saa_writel(SAA7134_MAIN_CTRL,
 632                    SAA7134_MAIN_CTRL_VPLLE |
 633                    SAA7134_MAIN_CTRL_APLLE |
 634                    SAA7134_MAIN_CTRL_EXOSC |
 635                    SAA7134_MAIN_CTRL_EVFE1 |
 636                    SAA7134_MAIN_CTRL_EVFE2 |
 637                    SAA7134_MAIN_CTRL_ESFE  |
 638                    SAA7134_MAIN_CTRL_EBDAC);
 639
 640         /*
 641          * Initialize OSS _after_ enabling audio clock PLL and audio processing.
 642          * OSS initialization writes to registers via the audio DSP; these
 643          * writes will fail unless the audio clock has been started.  At worst,
 644          * audio will not work.
 645          */
 646
 647         /* enable peripheral devices */
 648         saa_writeb(SAA7134_SPECIAL_MODE, 0x01);
 649
 650         /* set vertical line numbering start (vbi needs this) */
 651         saa_writeb(SAA7134_SOURCE_TIMING2, 0x20);
 652
 653         return 0;
 654 }
 655
 656 /* late init (with i2c + irq) */
 657 static int saa7134_hwinit2(struct saa7134_dev *dev)
 658 {
 659         unsigned int irq2_mask;
 660         dprintk("hwinit2\n");
 661
 662         saa7134_video_init2(dev);
 663         saa7134_tvaudio_init2(dev);
 664
 665         /* enable IRQ's */
 666         irq2_mask =
 667                 SAA7134_IRQ2_INTE_DEC3    |
 668                 SAA7134_IRQ2_INTE_DEC2    |
 669                 SAA7134_IRQ2_INTE_DEC1    |
 670                 SAA7134_IRQ2_INTE_DEC0    |
 671                 SAA7134_IRQ2_INTE_PE      |
 672                 SAA7134_IRQ2_INTE_AR;
 673
 674         if (dev->has_remote == SAA7134_REMOTE_GPIO) {
 675                 if (dev->remote->mask_keydown & 0x10000)
 676                         irq2_mask |= SAA7134_IRQ2_INTE_GPIO16;
 677                 else if (dev->remote->mask_keydown & 0x40000)
 678                         irq2_mask |= SAA7134_IRQ2_INTE_GPIO18;
 679                 else if (dev->remote->mask_keyup & 0x40000)
 680                         irq2_mask |= SAA7134_IRQ2_INTE_GPIO18A;
 681         }
 682
 683         saa_writel(SAA7134_IRQ1, 0);
 684         saa_writel(SAA7134_IRQ2, irq2_mask);
 685
 686         return 0;
 687 }
 688
 689 /* shutdown */
 690 static int saa7134_hwfini(struct saa7134_dev *dev)
 691 {
 692         dprintk("hwfini\n");
 693
 694         if (card_has_mpeg(dev))
 695                 saa7134_ts_fini(dev);
 696         saa7134_input_fini(dev);
 697         saa7134_vbi_fini(dev);
 698         saa7134_video_fini(dev);
 699         saa7134_tvaudio_fini(dev);
 700         return 0;
 701 }
 702
 703 static void __devinit must_configure_manually(void)
 704 {
 705         unsigned int i,p;
 706
 707         printk(KERN_WARNING
 708                "saa7134: <rant>\n"
 709                "saa7134:  Congratulations!  Your TV card vendor saved a few\n"
 710                "saa7134:  cents for a eeprom, thus your pci board has no\n"
 711                "saa7134:  subsystem ID and I can't identify it automatically\n"
 712                "saa7134: </rant>\n"
 713                "saa7134: I feel better now.  Ok, here are the good news:\n"
 714                "saa7134: You can use the card=<nr> insmod option to specify\n"
 715                "saa7134: which board do you have.  The list:\n");
 716         for (i = 0; i < saa7134_bcount; i++) {
 717                 printk(KERN_WARNING "saa7134:   card=%d -> %-40.40s",
 718                        i,saa7134_boards[i].name);
 719                 for (p = 0; saa7134_pci_tbl[p].driver_data; p++) {
 720                         if (saa7134_pci_tbl[p].driver_data != i)
 721                                 continue;
 722                         printk(" %04x:%04x",
 723                                saa7134_pci_tbl[p].subvendor,
 724                                saa7134_pci_tbl[p].subdevice);
 725                 }
 726                 printk("\n");
 727         }
 728 }
 729
 730 static struct video_device *vdev_init(struct saa7134_dev *dev,
 731                                       struct video_device *template,
 732                                       char *type)
 733 {
 734         struct video_device *vfd;
 735
 736         vfd = video_device_alloc();
 737         if (NULL == vfd)
 738                 return NULL;
 739         *vfd = *template;
 740         vfd->minor   = -1;
 741         vfd->dev     = &dev->pci->dev;
 742         vfd->release = video_device_release;
 743         snprintf(vfd->name, sizeof(vfd->name), "%s %s (%s)",
 744                  dev->name, type, saa7134_boards[dev->board].name);
 745         return vfd;
 746 }
 747
 748 static void saa7134_unregister_video(struct saa7134_dev *dev)
 749 {
 750         if (dev->video_dev) {
 751                 if (-1 != dev->video_dev->minor)
 752                         video_unregister_device(dev->video_dev);
 753                 else
 754                         video_device_release(dev->video_dev);
 755                 dev->video_dev = NULL;
 756         }
 757         if (dev->vbi_dev) {
 758                 if (-1 != dev->vbi_dev->minor)
 759                         video_unregister_device(dev->vbi_dev);
 760                 else
 761                         video_device_release(dev->vbi_dev);
 762                 dev->vbi_dev = NULL;
 763         }
 764         if (dev->radio_dev) {
 765                 if (-1 != dev->radio_dev->minor)
 766                         video_unregister_device(dev->radio_dev);
 767                 else
 768                         video_device_release(dev->radio_dev);
 769                 dev->radio_dev = NULL;
 770         }
 771 }
 772
 773 static void mpeg_ops_attach(struct saa7134_mpeg_ops *ops,
 774                             struct saa7134_dev *dev)
 775 {
 776         int err;
 777
 778         if (NULL != dev->mops)
 779                 return;
 780         if (saa7134_boards[dev->board].mpeg != ops->type)
 781                 return;
 782         err = ops->init(dev);
 783         if (0 != err)
 784                 return;
 785         dev->mops = ops;
 786 }
 787
 788 static void mpeg_ops_detach(struct saa7134_mpeg_ops *ops,
 789                             struct saa7134_dev *dev)
 790 {
 791         if (NULL == dev->mops)
 792                 return;
 793         if (dev->mops != ops)
 794                 return;
 795         dev->mops->fini(dev);
 796         dev->mops = NULL;
 797 }
 798
 799 static int __devinit saa7134_initdev(struct pci_dev *pci_dev,
 800                                      const struct pci_device_id *pci_id)
 801 {
 802         struct saa7134_dev *dev;
 803         struct list_head *item;
 804         struct saa7134_mpeg_ops *mops;
 805         int err;
 806
 807         dev = kzalloc(sizeof(*dev),GFP_KERNEL);
 808         if (NULL == dev)
 809                 return -ENOMEM;
 810
 811         /* pci init */
 812         dev->pci = pci_dev;
 813         if (pci_enable_device(pci_dev)) {
 814                 err = -EIO;
 815                 goto fail1;
 816         }
 817
 818         dev->nr = saa7134_devcount;
 819         sprintf(dev->name,"saa%x[%d]",pci_dev->device,dev->nr);
 820
 821         /* pci quirks */
 822         if (pci_pci_problems) {
 823                 if (pci_pci_problems & PCIPCI_TRITON)
 824                         printk(KERN_INFO "%s: quirk: PCIPCI_TRITON\n", dev->name);
 825                 if (pci_pci_problems & PCIPCI_NATOMA)
 826                         printk(KERN_INFO "%s: quirk: PCIPCI_NATOMA\n", dev->name);
 827                 if (pci_pci_problems & PCIPCI_VIAETBF)
 828                         printk(KERN_INFO "%s: quirk: PCIPCI_VIAETBF\n", dev->name);
 829                 if (pci_pci_problems & PCIPCI_VSFX)
 830                         printk(KERN_INFO "%s: quirk: PCIPCI_VSFX\n",dev->name);
 831 #ifdef PCIPCI_ALIMAGIK
 832                 if (pci_pci_problems & PCIPCI_ALIMAGIK) {
 833                         printk(KERN_INFO "%s: quirk: PCIPCI_ALIMAGIK -- latency fixup\n",
 834                                dev->name);
 835                         latency = 0x0A;
 836                 }
 837 #endif
 838         }
 839         if (UNSET != latency) {
 840                 printk(KERN_INFO "%s: setting pci latency timer to %d\n",
 841                        dev->name,latency);
 842                 pci_write_config_byte(pci_dev, PCI_LATENCY_TIMER, latency);
 843         }
 844
 845         /* print pci info */
 846         pci_read_config_byte(pci_dev, PCI_CLASS_REVISION, &dev->pci_rev);
 847         pci_read_config_byte(pci_dev, PCI_LATENCY_TIMER,  &dev->pci_lat);
 848         printk(KERN_INFO "%s: found at %s, rev: %d, irq: %d, "
 849                "latency: %d, mmio: 0x%lx\n", dev->name,
 850                pci_name(pci_dev), dev->pci_rev, pci_dev->irq,
 851                dev->pci_lat,pci_resource_start(pci_dev,0));
 852         pci_set_master(pci_dev);
 853         if (!pci_dma_supported(pci_dev,0xffffffff)) {
 854                 printk("%s: Oops: no 32bit PCI DMA ???\n",dev->name);
 855                 err = -EIO;
 856                 goto fail1;
 857         }
 858
 859         /* board config */
 860         dev->board = pci_id->driver_data;
 861         if (card[dev->nr] >= 0 &&
 862             card[dev->nr] < saa7134_bcount)
 863                 dev->board = card[dev->nr];
 864         if (SAA7134_BOARD_NOAUTO == dev->board) {
 865                 must_configure_manually();
 866                 dev->board = SAA7134_BOARD_UNKNOWN;
 867         }
 868         dev->tuner_type   = saa7134_boards[dev->board].tuner_type;
 869         dev->tda9887_conf = saa7134_boards[dev->board].tda9887_conf;
 870         if (UNSET != tuner[dev->nr])
 871                 dev->tuner_type = tuner[dev->nr];
 872         printk(KERN_INFO "%s: subsystem: %04x:%04x, board: %s [card=%d,%s]\n",
 873                dev->name,pci_dev->subsystem_vendor,
 874                pci_dev->subsystem_device,saa7134_boards[dev->board].name,
 875                dev->board, card[dev->nr] == dev->board ?
 876                "insmod option" : "autodetected");
 877
 878         /* get mmio */
 879         if (!request_mem_region(pci_resource_start(pci_dev,0),
 880                                 pci_resource_len(pci_dev,0),
 881                                 dev->name)) {
 882                 err = -EBUSY;
 883                 printk(KERN_ERR "%s: can't get MMIO memory @ 0x%lx\n",
 884                        dev->name,pci_resource_start(pci_dev,0));
 885                 goto fail1;
 886         }
 887         dev->lmmio = ioremap(pci_resource_start(pci_dev,0), 0x1000);
 888         dev->bmmio = (__u8 __iomem *)dev->lmmio;
 889         if (NULL == dev->lmmio) {
 890                 err = -EIO;
 891                 printk(KERN_ERR "%s: can't ioremap() MMIO memory\n",
 892                        dev->name);
 893                 goto fail2;
 894         }
 895
 896         /* initialize hardware #1 */
 897         saa7134_board_init1(dev);
 898         saa7134_hwinit1(dev);
 899
 900         /* get irq */
 901         err = request_irq(pci_dev->irq, saa7134_irq,
 902                           SA_SHIRQ | SA_INTERRUPT, dev->name, dev);
 903         if (err < 0) {
 904                 printk(KERN_ERR "%s: can't get IRQ %d\n",
 905                        dev->name,pci_dev->irq);
 906                 goto fail3;
 907         }
 908
 909         /* wait a bit, register i2c bus */
 910         msleep(100);
 911         saa7134_i2c_register(dev);
 912
 913         /* initialize hardware #2 */
 914         saa7134_board_init2(dev);
 915         saa7134_hwinit2(dev);
 916
 917         /* load i2c helpers */
 918         if (TUNER_ABSENT != dev->tuner_type)
 919                 request_module("tuner");
 920         if (dev->tda9887_conf)
 921                 request_module("tda9887");
 922         if (card_is_empress(dev)) {
 923                 request_module("saa6752hs");
 924                 request_module_depend("saa7134-empress",&need_empress);
 925         }
 926
 927         if (card_is_dvb(dev))
 928                 request_module_depend("saa7134-dvb",&need_dvb);
 929
 930
 931         if (alsa)
 932                 request_module_depend("saa7134-alsa",&need_alsa);
 933
 934         if (oss)
 935                 request_module_depend("saa7134-oss",&need_oss);
 936
 937         v4l2_prio_init(&dev->prio);
 938
 939         /* register v4l devices */
 940         dev->video_dev = vdev_init(dev,&saa7134_video_template,"video");
 941         err = video_register_device(dev->video_dev,VFL_TYPE_GRABBER,
 942                                     video_nr[dev->nr]);
 943         if (err < 0) {
 944                 printk(KERN_INFO "%s: can't register video device\n",
 945                        dev->name);
 946                 goto fail4;
 947         }
 948         printk(KERN_INFO "%s: registered device video%d [v4l2]\n",
 949                dev->name,dev->video_dev->minor & 0x1f);
 950
 951         dev->vbi_dev = vdev_init(dev,&saa7134_vbi_template,"vbi");
 952         err = video_register_device(dev->vbi_dev,VFL_TYPE_VBI,
 953                                     vbi_nr[dev->nr]);
 954         if (err < 0)
 955                 goto fail4;
 956         printk(KERN_INFO "%s: registered device vbi%d\n",
 957                dev->name,dev->vbi_dev->minor & 0x1f);
 958
 959         if (card_has_radio(dev)) {
 960                 dev->radio_dev = vdev_init(dev,&saa7134_radio_template,"radio");
 961                 err = video_register_device(dev->radio_dev,VFL_TYPE_RADIO,
 962                                             radio_nr[dev->nr]);
 963                 if (err < 0)
 964                         goto fail4;
 965                 printk(KERN_INFO "%s: registered device radio%d\n",
 966                        dev->name,dev->radio_dev->minor & 0x1f);
 967         }
 968
 969         /* everything worked */
 970         pci_set_drvdata(pci_dev,dev);
 971         saa7134_devcount++;
 972
 973         mutex_lock(&devlist_lock);
 974         list_for_each(item,&mops_list) {
 975                 mops = list_entry(item, struct saa7134_mpeg_ops, next);
 976                 mpeg_ops_attach(mops, dev);
 977         }
 978         list_add_tail(&dev->devlist,&saa7134_devlist);
 979         mutex_unlock(&devlist_lock);
 980
 981         /* check for signal */
 982         saa7134_irq_video_intl(dev);
 983
 984         if (dmasound_init && !dev->dmasound.priv_data) {
 985                 dmasound_init(dev);
 986         }
 987
 988         return 0;
 989
 990  fail4:
 991         saa7134_unregister_video(dev);
 992         saa7134_i2c_unregister(dev);
 993         free_irq(pci_dev->irq, dev);
 994  fail3:
 995         saa7134_hwfini(dev);
 996         iounmap(dev->lmmio);
 997  fail2:
 998         release_mem_region(pci_resource_start(pci_dev,0),
 999                            pci_resource_len(pci_dev,0));
1000  fail1:
1001         kfree(dev);
1002         return err;
1003 }
1004
1005 static void __devexit saa7134_finidev(struct pci_dev *pci_dev)
1006 {
1007         struct saa7134_dev *dev = pci_get_drvdata(pci_dev);
1008         struct list_head *item;
1009         struct saa7134_mpeg_ops *mops;
1010
1011         /* Release DMA sound modules if present */
1012         if (dmasound_exit && dev->dmasound.priv_data) {
1013                 dmasound_exit(dev);
1014         }
1015
1016         /* debugging ... */
1017         if (irq_debug) {
1018                 u32 report = saa_readl(SAA7134_IRQ_REPORT);
1019                 u32 status = saa_readl(SAA7134_IRQ_STATUS);
1020                 print_irqstatus(dev,42,report,status);
1021         }
1022
1023         /* disable peripheral devices */
1024         saa_writeb(SAA7134_SPECIAL_MODE,0);
1025
1026         /* shutdown hardware */
1027         saa_writel(SAA7134_IRQ1,0);
1028         saa_writel(SAA7134_IRQ2,0);
1029         saa_writel(SAA7134_MAIN_CTRL,0);
1030
1031         /* shutdown subsystems */
1032         saa7134_hwfini(dev);
1033
1034         /* unregister */
1035         mutex_lock(&devlist_lock);
1036         list_del(&dev->devlist);
1037         list_for_each(item,&mops_list) {
1038                 mops = list_entry(item, struct saa7134_mpeg_ops, next);
1039                 mpeg_ops_detach(mops, dev);
1040         }
1041         mutex_unlock(&devlist_lock);
1042         saa7134_devcount--;
1043
1044         saa7134_i2c_unregister(dev);
1045         saa7134_unregister_video(dev);
1046
1047
1048         /* the DMA sound modules should be unloaded before reaching
1049            this, but just in case they are still present... */
1050         if (dev->dmasound.priv_data != NULL) {
1051                 free_irq(pci_dev->irq, &dev->dmasound);
1052                 dev->dmasound.priv_data = NULL;
1053         }
1054
1055
1056         /* release resources */
1057         free_irq(pci_dev->irq, dev);
1058         iounmap(dev->lmmio);
1059         release_mem_region(pci_resource_start(pci_dev,0),
1060                            pci_resource_len(pci_dev,0));
1061
1062         pci_set_drvdata(pci_dev, NULL);
1063
1064         /* free memory */
1065         kfree(dev);
1066 }
1067
1068 /* ----------------------------------------------------------- */
1069
1070 int saa7134_ts_register(struct saa7134_mpeg_ops *ops)
1071 {
1072         struct list_head *item;
1073         struct saa7134_dev *dev;
1074
1075         mutex_lock(&devlist_lock);
1076         list_for_each(item,&saa7134_devlist) {
1077                 dev = list_entry(item, struct saa7134_dev, devlist);
1078                 mpeg_ops_attach(ops, dev);
1079         }
1080         list_add_tail(&ops->next,&mops_list);
1081         mutex_unlock(&devlist_lock);
1082         return 0;
1083 }
1084
1085 void saa7134_ts_unregister(struct saa7134_mpeg_ops *ops)
1086 {
1087         struct list_head *item;
1088         struct saa7134_dev *dev;
1089
1090         mutex_lock(&devlist_lock);
1091         list_del(&ops->next);
1092         list_for_each(item,&saa7134_devlist) {
1093                 dev = list_entry(item, struct saa7134_dev, devlist);
1094                 mpeg_ops_detach(ops, dev);
1095         }
1096         mutex_unlock(&devlist_lock);
1097 }
1098
1099 EXPORT_SYMBOL(saa7134_ts_register);
1100 EXPORT_SYMBOL(saa7134_ts_unregister);
1101
1102 /* ----------------------------------------------------------- */
1103
1104 static struct pci_driver saa7134_pci_driver = {
1105         .name     = "saa7134",
1106         .id_table = saa7134_pci_tbl,
1107         .probe    = saa7134_initdev,
1108         .remove   = __devexit_p(saa7134_finidev),
1109 };
1110
1111 static int saa7134_init(void)
1112 {
1113         INIT_LIST_HEAD(&saa7134_devlist);
1114         printk(KERN_INFO "saa7130/34: v4l2 driver version %d.%d.%d loaded\n",
1115                (SAA7134_VERSION_CODE >> 16) & 0xff,
1116                (SAA7134_VERSION_CODE >>  8) & 0xff,
1117                SAA7134_VERSION_CODE & 0xff);
1118 #ifdef SNAPSHOT
1119         printk(KERN_INFO "saa7130/34: snapshot date %04d-%02d-%02d\n",
1120                SNAPSHOT/10000, (SNAPSHOT/100)%100, SNAPSHOT%100);
1121 #endif
1122         return pci_register_driver(&saa7134_pci_driver);
1123 }
1124
1125 static void saa7134_fini(void)
1126 {
1127 #if defined(CONFIG_MODULES) && defined(MODULE)
1128         if (pending_registered)
1129                 unregister_module_notifier(&pending_notifier);
1130 #endif /* CONFIG_MODULES */
1131         pci_unregister_driver(&saa7134_pci_driver);
1132 }
1133
1134 module_init(saa7134_init);
1135 module_exit(saa7134_fini);
1136
1137 /* ----------------------------------------------------------- */
1138
1139 EXPORT_SYMBOL(saa7134_i2c_call_clients);
1140 EXPORT_SYMBOL(saa7134_devlist);
1141 EXPORT_SYMBOL(saa7134_boards);
1142
1143 /* ----------------- for the DMA sound modules --------------- */
1144
1145 EXPORT_SYMBOL(dmasound_init);
1146 EXPORT_SYMBOL(dmasound_exit);
1147 EXPORT_SYMBOL(saa7134_pgtable_free);
1148 EXPORT_SYMBOL(saa7134_pgtable_build);
1149 EXPORT_SYMBOL(saa7134_pgtable_alloc);
1150 EXPORT_SYMBOL(saa7134_set_dmabits);
1151
1152 /* ----------------------------------------------------------- */
1153 /*
1154  * Local variables:
1155  * c-basic-offset: 8
1156  * End:
1157  */