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
  35 #include "saa7134-reg.h"
  36 #include "saa7134.h"
  37
  38 MODULE_DESCRIPTION("v4l2 driver module for saa7130/34 based TV cards");
  39 MODULE_AUTHOR("Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]");
  40 MODULE_LICENSE("GPL");
  41
  42 /* ------------------------------------------------------------------ */
  43
  44 static unsigned int irq_debug = 0;
  45 module_param(irq_debug, int, 0644);
  46 MODULE_PARM_DESC(irq_debug,"enable debug messages [IRQ handler]");
  47
  48 static unsigned int core_debug = 0;
  49 module_param(core_debug, int, 0644);
  50 MODULE_PARM_DESC(core_debug,"enable debug messages [core]");
  51
  52 static unsigned int gpio_tracking = 0;
  53 module_param(gpio_tracking, int, 0644);
  54 MODULE_PARM_DESC(gpio_tracking,"enable debug messages [gpio]");
  55
  56 static unsigned int alsa = 0;
  57 module_param(alsa, int, 0644);
  58 MODULE_PARM_DESC(alsa,"enable ALSA DMA sound [dmasound]");
  59
  60 static unsigned int oss = 0;
  61 module_param(oss, int, 0644);
  62 MODULE_PARM_DESC(oss,"enable OSS DMA sound [dmasound]");
  63
  64 static unsigned int latency = UNSET;
  65 module_param(latency, int, 0444);
  66 MODULE_PARM_DESC(latency,"pci latency timer");
  67
  68 static unsigned int video_nr[] = {[0 ... (SAA7134_MAXBOARDS - 1)] = UNSET };
  69 static unsigned int vbi_nr[]   = {[0 ... (SAA7134_MAXBOARDS - 1)] = UNSET };
  70 static unsigned int radio_nr[] = {[0 ... (SAA7134_MAXBOARDS - 1)] = UNSET };
  71 static unsigned int tuner[]    = {[0 ... (SAA7134_MAXBOARDS - 1)] = UNSET };
  72 static unsigned int card[]     = {[0 ... (SAA7134_MAXBOARDS - 1)] = UNSET };
  73
  74
  75 module_param_array(video_nr, int, NULL, 0444);
  76 module_param_array(vbi_nr,   int, NULL, 0444);
  77 module_param_array(radio_nr, int, NULL, 0444);
  78 module_param_array(tuner,    int, NULL, 0444);
  79 module_param_array(card,     int, NULL, 0444);
  80
  81 MODULE_PARM_DESC(video_nr, "video device number");
  82 MODULE_PARM_DESC(vbi_nr,   "vbi device number");
  83 MODULE_PARM_DESC(radio_nr, "radio device number");
  84 MODULE_PARM_DESC(tuner,    "tuner type");
  85 MODULE_PARM_DESC(card,     "card type");
  86
  87 static DECLARE_MUTEX(devlist_lock);
  88 LIST_HEAD(saa7134_devlist);
  89 static LIST_HEAD(mops_list);
  90 static unsigned int saa7134_devcount;
  91
  92 int (*dmasound_init)(struct saa7134_dev *dev);
  93 int (*dmasound_exit)(struct saa7134_dev *dev);
  94
  95 #define dprintk(fmt, arg...)    if (core_debug) \
  96         printk(KERN_DEBUG "%s/core: " fmt, dev->name , ## arg)
  97
  98 void saa7134_track_gpio(struct saa7134_dev *dev, char *msg)
  99 {
 100         unsigned long mode,status;
 101
 102         if (!gpio_tracking)
 103                 return;
 104         /* rising SAA7134_GPIO_GPRESCAN reads the status */
 105         saa_andorb(SAA7134_GPIO_GPMODE3,SAA7134_GPIO_GPRESCAN,0);
 106         saa_andorb(SAA7134_GPIO_GPMODE3,SAA7134_GPIO_GPRESCAN,SAA7134_GPIO_GPRESCAN);
 107         mode   = saa_readl(SAA7134_GPIO_GPMODE0   >> 2) & 0xfffffff;
 108         status = saa_readl(SAA7134_GPIO_GPSTATUS0 >> 2) & 0xfffffff;
 109         printk(KERN_DEBUG
 110                "%s: gpio: mode=0x%07lx in=0x%07lx out=0x%07lx [%s]\n",
 111                dev->name, mode, (~mode) & status, mode & status, msg);
 112 }
 113
 114 /* ------------------------------------------------------------------ */
 115
 116
 117 /* ----------------------------------------------------------- */
 118 /* delayed request_module                                      */
 119
 120 #if defined(CONFIG_MODULES) && defined(MODULE)
 121 static int need_empress;
 122 static int need_dvb;
 123 static int need_alsa;
 124 static int need_oss;
 125
 126 static int pending_call(struct notifier_block *self, unsigned long state,
 127                         void *module)
 128 {
 129         if (module != THIS_MODULE || state != MODULE_STATE_LIVE)
 130                 return NOTIFY_DONE;
 131
 132         if (need_empress)
 133                 request_module("saa7134-empress");
 134         if (need_dvb)
 135                 request_module("saa7134-dvb");
 136         if (need_alsa)
 137                 request_module("saa7134-alsa");
 138         if (need_oss)
 139                 request_module("saa7134-oss");
 140         return NOTIFY_DONE;
 141 }
 142
 143 static int pending_registered=0;
 144 static struct notifier_block pending_notifier = {
 145         .notifier_call = pending_call,
 146 };
 147
 148 static void request_module_depend(char *name, int *flag)
 149 {
 150         int err;
 151         switch (THIS_MODULE->state) {
 152         case MODULE_STATE_COMING:
 153                 if (!pending_registered) {
 154                         err = register_module_notifier(&pending_notifier);
 155                         pending_registered = 1;
 156                 }
 157                 *flag = 1;
 158                 break;
 159         case MODULE_STATE_LIVE:
 160                 request_module(name);
 161                 break;
 162         default:
 163                 /* nothing */;
 164                 break;
 165         }
 166 }
 167
 168 #else
 169 #define request_module_depend(name,flag)
 170 #endif /* CONFIG_MODULES */
 171
 172 /* ------------------------------------------------------------------ */
 173
 174 /* nr of (saa7134-)pages for the given buffer size */
 175 static int saa7134_buffer_pages(int size)
 176 {
 177         size  = PAGE_ALIGN(size);
 178         size += PAGE_SIZE; /* for non-page-aligned buffers */
 179         size /= 4096;
 180         return size;
 181 }
 182
 183 /* calc max # of buffers from size (must not exceed the 4MB virtual
 184  * address space per DMA channel) */
 185 int saa7134_buffer_count(unsigned int size, unsigned int count)
 186 {
 187         unsigned int maxcount;
 188
 189         maxcount = 1024 / saa7134_buffer_pages(size);
 190         if (count > maxcount)
 191                 count = maxcount;
 192         return count;
 193 }
 194
 195 int saa7134_buffer_startpage(struct saa7134_buf *buf)
 196 {
 197         return saa7134_buffer_pages(buf->vb.bsize) * buf->vb.i;
 198 }
 199
 200 unsigned long saa7134_buffer_base(struct saa7134_buf *buf)
 201 {
 202         unsigned long base;
 203
 204         base  = saa7134_buffer_startpage(buf) * 4096;
 205         base += buf->vb.dma.sglist[0].offset;
 206         return base;
 207 }
 208
 209 /* ------------------------------------------------------------------ */
 210
 211 int saa7134_pgtable_alloc(struct pci_dev *pci, struct saa7134_pgtable *pt)
 212 {
 213         __le32       *cpu;
 214         dma_addr_t   dma_addr;
 215
 216         cpu = pci_alloc_consistent(pci, SAA7134_PGTABLE_SIZE, &dma_addr);
 217         if (NULL == cpu)
 218                 return -ENOMEM;
 219         pt->size = SAA7134_PGTABLE_SIZE;
 220         pt->cpu  = cpu;
 221         pt->dma  = dma_addr;
 222         return 0;
 223 }
 224
 225 int saa7134_pgtable_build(struct pci_dev *pci, struct saa7134_pgtable *pt,
 226                           struct scatterlist *list, unsigned int length,
 227                           unsigned int startpage)
 228 {
 229         __le32        *ptr;
 230         unsigned int  i,p;
 231
 232         BUG_ON(NULL == pt || NULL == pt->cpu);
 233
 234         ptr = pt->cpu + startpage;
 235         for (i = 0; i < length; i++, list++)
 236                 for (p = 0; p * 4096 < list->length; p++, ptr++)
 237                         *ptr = cpu_to_le32(sg_dma_address(list) - list->offset);
 238         return 0;
 239 }
 240
 241 void saa7134_pgtable_free(struct pci_dev *pci, struct saa7134_pgtable *pt)
 242 {
 243         if (NULL == pt->cpu)
 244                 return;
 245         pci_free_consistent(pci, pt->size, pt->cpu, pt->dma);
 246         pt->cpu = NULL;
 247 }
 248
 249 /* ------------------------------------------------------------------ */
 250
 251 void saa7134_dma_free(struct saa7134_dev *dev,struct saa7134_buf *buf)
 252 {
 253         if (in_interrupt())
 254                 BUG();
 255
 256         videobuf_waiton(&buf->vb,0,0);
 257         videobuf_dma_pci_unmap(dev->pci, &buf->vb.dma);
 258         videobuf_dma_free(&buf->vb.dma);
 259         buf->vb.state = STATE_NEEDS_INIT;
 260 }
 261
 262 /* ------------------------------------------------------------------ */
 263
 264 int saa7134_buffer_queue(struct saa7134_dev *dev,
 265                          struct saa7134_dmaqueue *q,
 266                          struct saa7134_buf *buf)
 267 {
 268         struct saa7134_buf *next = NULL;
 269
 270         assert_spin_locked(&dev->slock);
 271         dprintk("buffer_queue %p\n",buf);
 272         if (NULL == q->curr) {
 273                 if (!q->need_two) {
 274                         q->curr = buf;
 275                         buf->activate(dev,buf,NULL);
 276                 } else if (list_empty(&q->queue)) {
 277                         list_add_tail(&buf->vb.queue,&q->queue);
 278                         buf->vb.state = STATE_QUEUED;
 279                 } else {
 280                         next = list_entry(q->queue.next,struct saa7134_buf,
 281                                           vb.queue);
 282                         q->curr = buf;
 283                         buf->activate(dev,buf,next);
 284                 }
 285         } else {
 286                 list_add_tail(&buf->vb.queue,&q->queue);
 287                 buf->vb.state = STATE_QUEUED;
 288         }
 289         return 0;
 290 }
 291
 292 void saa7134_buffer_finish(struct saa7134_dev *dev,
 293                            struct saa7134_dmaqueue *q,
 294                            unsigned int state)
 295 {
 296         assert_spin_locked(&dev->slock);
 297         dprintk("buffer_finish %p\n",q->curr);
 298
 299         /* finish current buffer */
 300         q->curr->vb.state = state;
 301         do_gettimeofday(&q->curr->vb.ts);
 302         wake_up(&q->curr->vb.done);
 303         q->curr = NULL;
 304 }
 305
 306 void saa7134_buffer_next(struct saa7134_dev *dev,
 307                          struct saa7134_dmaqueue *q)
 308 {
 309         struct saa7134_buf *buf,*next = NULL;
 310
 311         assert_spin_locked(&dev->slock);
 312         BUG_ON(NULL != q->curr);
 313
 314         if (!list_empty(&q->queue)) {
 315                 /* activate next one from queue */
 316                 buf = list_entry(q->queue.next,struct saa7134_buf,vb.queue);
 317                 dprintk("buffer_next %p [prev=%p/next=%p]\n",
 318                         buf,q->queue.prev,q->queue.next);
 319                 list_del(&buf->vb.queue);
 320                 if (!list_empty(&q->queue))
 321                         next = list_entry(q->queue.next,struct saa7134_buf,
 322                                           vb.queue);
 323                 q->curr = buf;
 324                 buf->activate(dev,buf,next);
 325                 dprintk("buffer_next #2 prev=%p/next=%p\n",
 326                         q->queue.prev,q->queue.next);
 327         } else {
 328                 /* nothing to do -- just stop DMA */
 329                 dprintk("buffer_next %p\n",NULL);
 330                 saa7134_set_dmabits(dev);
 331                 del_timer(&q->timeout);
 332         }
 333 }
 334
 335 void saa7134_buffer_timeout(unsigned long data)
 336 {
 337         struct saa7134_dmaqueue *q = (struct saa7134_dmaqueue*)data;
 338         struct saa7134_dev *dev = q->dev;
 339         unsigned long flags;
 340
 341         spin_lock_irqsave(&dev->slock,flags);
 342
 343         /* try to reset the hardware (SWRST) */
 344         saa_writeb(SAA7134_REGION_ENABLE, 0x00);
 345         saa_writeb(SAA7134_REGION_ENABLE, 0x80);
 346         saa_writeb(SAA7134_REGION_ENABLE, 0x00);
 347
 348         /* flag current buffer as failed,
 349            try to start over with the next one. */
 350         if (q->curr) {
 351                 dprintk("timeout on %p\n",q->curr);
 352                 saa7134_buffer_finish(dev,q,STATE_ERROR);
 353         }
 354         saa7134_buffer_next(dev,q);
 355         spin_unlock_irqrestore(&dev->slock,flags);
 356 }
 357
 358 /* ------------------------------------------------------------------ */
 359
 360 int saa7134_set_dmabits(struct saa7134_dev *dev)
 361 {
 362         u32 split, task=0, ctrl=0, irq=0;
 363         enum v4l2_field cap = V4L2_FIELD_ANY;
 364         enum v4l2_field ov  = V4L2_FIELD_ANY;
 365
 366         assert_spin_locked(&dev->slock);
 367
 368         /* video capture -- dma 0 + video task A */
 369         if (dev->video_q.curr) {
 370                 task |= 0x01;
 371                 ctrl |= SAA7134_MAIN_CTRL_TE0;
 372                 irq  |= SAA7134_IRQ1_INTE_RA0_1 |
 373                         SAA7134_IRQ1_INTE_RA0_0;
 374                 cap = dev->video_q.curr->vb.field;
 375         }
 376
 377         /* video capture -- dma 1+2 (planar modes) */
 378         if (dev->video_q.curr &&
 379             dev->video_q.curr->fmt->planar) {
 380                 ctrl |= SAA7134_MAIN_CTRL_TE4 |
 381                         SAA7134_MAIN_CTRL_TE5;
 382         }
 383
 384         /* screen overlay -- dma 0 + video task B */
 385         if (dev->ovenable) {
 386                 task |= 0x10;
 387                 ctrl |= SAA7134_MAIN_CTRL_TE1;
 388                 ov = dev->ovfield;
 389         }
 390
 391         /* vbi capture -- dma 0 + vbi task A+B */
 392         if (dev->vbi_q.curr) {
 393                 task |= 0x22;
 394                 ctrl |= SAA7134_MAIN_CTRL_TE2 |
 395                         SAA7134_MAIN_CTRL_TE3;
 396                 irq  |= SAA7134_IRQ1_INTE_RA0_7 |
 397                         SAA7134_IRQ1_INTE_RA0_6 |
 398                         SAA7134_IRQ1_INTE_RA0_5 |
 399                         SAA7134_IRQ1_INTE_RA0_4;
 400         }
 401
 402         /* audio capture -- dma 3 */
 403         if (dev->dmasound.dma_running) {
 404                 ctrl |= SAA7134_MAIN_CTRL_TE6;
 405                 irq  |= SAA7134_IRQ1_INTE_RA3_1 |
 406                         SAA7134_IRQ1_INTE_RA3_0;
 407         }
 408
 409         /* TS capture -- dma 5 */
 410         if (dev->ts_q.curr) {
 411                 ctrl |= SAA7134_MAIN_CTRL_TE5;
 412                 irq  |= SAA7134_IRQ1_INTE_RA2_3 |
 413                         SAA7134_IRQ1_INTE_RA2_2 |
 414                         SAA7134_IRQ1_INTE_RA2_1 |
 415                         SAA7134_IRQ1_INTE_RA2_0;
 416         }
 417
 418         /* set task conditions + field handling */
 419         if (V4L2_FIELD_HAS_BOTH(cap) || V4L2_FIELD_HAS_BOTH(ov) || cap == ov) {
 420                 /* default config -- use full frames */
 421                 saa_writeb(SAA7134_TASK_CONDITIONS(TASK_A), 0x0d);
 422                 saa_writeb(SAA7134_TASK_CONDITIONS(TASK_B), 0x0d);
 423                 saa_writeb(SAA7134_FIELD_HANDLING(TASK_A),  0x02);
 424                 saa_writeb(SAA7134_FIELD_HANDLING(TASK_B),  0x02);
 425                 split = 0;
 426         } else {
 427                 /* split fields between tasks */
 428                 if (V4L2_FIELD_TOP == cap) {
 429                         /* odd A, even B, repeat */
 430                         saa_writeb(SAA7134_TASK_CONDITIONS(TASK_A), 0x0d);
 431                         saa_writeb(SAA7134_TASK_CONDITIONS(TASK_B), 0x0e);
 432                 } else {
 433                         /* odd B, even A, repeat */
 434                         saa_writeb(SAA7134_TASK_CONDITIONS(TASK_A), 0x0e);
 435                         saa_writeb(SAA7134_TASK_CONDITIONS(TASK_B), 0x0d);
 436                 }
 437                 saa_writeb(SAA7134_FIELD_HANDLING(TASK_A),  0x01);
 438                 saa_writeb(SAA7134_FIELD_HANDLING(TASK_B),  0x01);
 439                 split = 1;
 440         }
 441
 442         /* irqs */
 443         saa_writeb(SAA7134_REGION_ENABLE, task);
 444         saa_writel(SAA7134_IRQ1,          irq);
 445         saa_andorl(SAA7134_MAIN_CTRL,
 446                    SAA7134_MAIN_CTRL_TE0 |
 447                    SAA7134_MAIN_CTRL_TE1 |
 448                    SAA7134_MAIN_CTRL_TE2 |
 449                    SAA7134_MAIN_CTRL_TE3 |
 450                    SAA7134_MAIN_CTRL_TE4 |
 451                    SAA7134_MAIN_CTRL_TE5 |
 452                    SAA7134_MAIN_CTRL_TE6,
 453                    ctrl);
 454         dprintk("dmabits: task=0x%02x ctrl=0x%02x irq=0x%x split=%s\n",
 455                 task, ctrl, irq, split ? "no" : "yes");
 456
 457         return 0;
 458 }
 459
 460 /* ------------------------------------------------------------------ */
 461 /* IRQ handler + helpers                                              */
 462
 463 static char *irqbits[] = {
 464         "DONE_RA0", "DONE_RA1", "DONE_RA2", "DONE_RA3",
 465         "AR", "PE", "PWR_ON", "RDCAP", "INTL", "FIDT", "MMC",
 466         "TRIG_ERR", "CONF_ERR", "LOAD_ERR",
 467         "GPIO16?", "GPIO18", "GPIO22", "GPIO23"
 468 };
 469 #define IRQBITS ARRAY_SIZE(irqbits)
 470
 471 static void print_irqstatus(struct saa7134_dev *dev, int loop,
 472                             unsigned long report, unsigned long status)
 473 {
 474         unsigned int i;
 475
 476         printk(KERN_DEBUG "%s/irq[%d,%ld]: r=0x%lx s=0x%02lx",
 477                dev->name,loop,jiffies,report,status);
 478         for (i = 0; i < IRQBITS; i++) {
 479                 if (!(report & (1 << i)))
 480                         continue;
 481                 printk(" %s",irqbits[i]);
 482         }
 483         if (report & SAA7134_IRQ_REPORT_DONE_RA0) {
 484                 printk(" | RA0=%s,%s,%s,%ld",
 485                        (status & 0x40) ? "vbi"  : "video",
 486                        (status & 0x20) ? "b"    : "a",
 487                        (status & 0x10) ? "odd"  : "even",
 488                        (status & 0x0f));
 489         }
 490         printk("\n");
 491 }
 492
 493 static irqreturn_t saa7134_irq(int irq, void *dev_id, struct pt_regs *regs)
 494 {
 495         struct saa7134_dev *dev = (struct saa7134_dev*) dev_id;
 496         unsigned long report,status;
 497         int loop, handled = 0;
 498
 499         for (loop = 0; loop < 10; loop++) {
 500                 report = saa_readl(SAA7134_IRQ_REPORT);
 501                 status = saa_readl(SAA7134_IRQ_STATUS);
 502                 if (0 == report) {
 503                         if (irq_debug > 1)
 504                                 printk(KERN_DEBUG "%s/irq: no (more) work\n",
 505                                        dev->name);
 506                         goto out;
 507                 }
 508
 509                 /* If dmasound support is active and we get a sound report, exit
 510                    and let the saa7134-alsa/oss module deal with it */
 511
 512                 if ((report & SAA7134_IRQ_REPORT_DONE_RA3) &&
 513                         (dev->dmasound.priv_data != NULL) )
 514                 {
 515                         if (irq_debug > 1)
 516                                 printk(KERN_DEBUG "%s/irq: ignoring interrupt for DMA sound\n",
 517                                        dev->name);
 518                         goto out;
 519                 }
 520
 521                 handled = 1;
 522                 saa_writel(SAA7134_IRQ_REPORT,report);
 523                 if (irq_debug)
 524                         print_irqstatus(dev,loop,report,status);
 525
 526
 527                 if (report & SAA7134_IRQ_REPORT_RDCAP /* _INTL */)
 528                         saa7134_irq_video_intl(dev);
 529
 530                 if ((report & SAA7134_IRQ_REPORT_DONE_RA0) &&
 531                     (status & 0x60) == 0)
 532                         saa7134_irq_video_done(dev,status);
 533
 534                 if ((report & SAA7134_IRQ_REPORT_DONE_RA0) &&
 535                     (status & 0x40) == 0x40)
 536                         saa7134_irq_vbi_done(dev,status);
 537
 538                 if ((report & SAA7134_IRQ_REPORT_DONE_RA2) &&
 539                     card_has_mpeg(dev))
 540                         saa7134_irq_ts_done(dev,status);
 541
 542                 if (report & SAA7134_IRQ_REPORT_GPIO16) {
 543                         switch (dev->has_remote) {
 544                                 case SAA7134_REMOTE_GPIO:
 545                                         if  (dev->remote->mask_keydown & 0x10000) {
 546                                                 saa7134_input_irq(dev);
 547                                         }
 548                                         break;
 549
 550                                 case SAA7134_REMOTE_I2C:
 551                                         break;                  /* FIXME: invoke I2C get_key() */
 552
 553                                 default:                        /* GPIO16 not used by IR remote */
 554                                         break;
 555                         }
 556                 }
 557
 558                 if (report & SAA7134_IRQ_REPORT_GPIO18) {
 559                         switch (dev->has_remote) {
 560                                 case SAA7134_REMOTE_GPIO:
 561                                         if ((dev->remote->mask_keydown & 0x40000) ||
 562                                             (dev->remote->mask_keyup & 0x40000)) {
 563                                                 saa7134_input_irq(dev);
 564                                         }
 565                                         break;
 566
 567                                 case SAA7134_REMOTE_I2C:
 568                                         break;                  /* FIXME: invoke I2C get_key() */
 569
 570                                 default:                        /* GPIO18 not used by IR remote */
 571                                         break;
 572                         }
 573                 }
 574         }
 575
 576         if (10 == loop) {
 577                 print_irqstatus(dev,loop,report,status);
 578                 if (report & SAA7134_IRQ_REPORT_PE) {
 579                         /* disable all parity error */
 580                         printk(KERN_WARNING "%s/irq: looping -- "
 581                                "clearing PE (parity error!) enable bit\n",dev->name);
 582                         saa_clearl(SAA7134_IRQ2,SAA7134_IRQ2_INTE_PE);
 583                 } else if (report & SAA7134_IRQ_REPORT_GPIO16) {
 584                         /* disable gpio16 IRQ */
 585                         printk(KERN_WARNING "%s/irq: looping -- "
 586                                "clearing GPIO16 enable bit\n",dev->name);
 587                         saa_clearl(SAA7134_IRQ2, SAA7134_IRQ2_INTE_GPIO16);
 588                 } else if (report & SAA7134_IRQ_REPORT_GPIO18) {
 589                         /* disable gpio18 IRQs */
 590                         printk(KERN_WARNING "%s/irq: looping -- "
 591                                "clearing GPIO18 enable bit\n",dev->name);
 592                         saa_clearl(SAA7134_IRQ2, SAA7134_IRQ2_INTE_GPIO18);
 593                 } else {
 594                         /* disable all irqs */
 595                         printk(KERN_WARNING "%s/irq: looping -- "
 596                                "clearing all enable bits\n",dev->name);
 597                         saa_writel(SAA7134_IRQ1,0);
 598                         saa_writel(SAA7134_IRQ2,0);
 599                 }
 600         }
 601
 602  out:
 603         return IRQ_RETVAL(handled);
 604 }
 605
 606 /* ------------------------------------------------------------------ */
 607
 608 /* early init (no i2c, no irq) */
 609 static int saa7134_hwinit1(struct saa7134_dev *dev)
 610 {
 611         dprintk("hwinit1\n");
 612
 613         saa_writel(SAA7134_IRQ1, 0);
 614         saa_writel(SAA7134_IRQ2, 0);
 615         init_MUTEX(&dev->lock);
 616         spin_lock_init(&dev->slock);
 617
 618         saa7134_track_gpio(dev,"pre-init");
 619         saa7134_video_init1(dev);
 620         saa7134_vbi_init1(dev);
 621         if (card_has_mpeg(dev))
 622                 saa7134_ts_init1(dev);
 623         saa7134_input_init1(dev);
 624
 625         /* RAM FIFO config */
 626         saa_writel(SAA7134_FIFO_SIZE, 0x08070503);
 627         saa_writel(SAA7134_THRESHOULD,0x02020202);
 628
 629         /* enable audio + video processing */
 630         saa_writel(SAA7134_MAIN_CTRL,
 631                    SAA7134_MAIN_CTRL_VPLLE |
 632                    SAA7134_MAIN_CTRL_APLLE |
 633                    SAA7134_MAIN_CTRL_EXOSC |
 634                    SAA7134_MAIN_CTRL_EVFE1 |
 635                    SAA7134_MAIN_CTRL_EVFE2 |
 636                    SAA7134_MAIN_CTRL_ESFE  |
 637                    SAA7134_MAIN_CTRL_EBDAC);
 638
 639         /*
 640          * Initialize OSS _after_ enabling audio clock PLL and audio processing.
 641          * OSS initialization writes to registers via the audio DSP; these
 642          * writes will fail unless the audio clock has been started.  At worst,
 643          * audio will not work.
 644          */
 645
 646         /* enable peripheral devices */
 647         saa_writeb(SAA7134_SPECIAL_MODE, 0x01);
 648
 649         /* set vertical line numbering start (vbi needs this) */
 650         saa_writeb(SAA7134_SOURCE_TIMING2, 0x20);
 651
 652         return 0;
 653 }
 654
 655 /* late init (with i2c + irq) */
 656 static int saa7134_hwinit2(struct saa7134_dev *dev)
 657 {
 658         unsigned int irq2_mask;
 659         dprintk("hwinit2\n");
 660
 661         saa7134_video_init2(dev);
 662         saa7134_tvaudio_init2(dev);
 663
 664         /* enable IRQ's */
 665         irq2_mask =
 666                 SAA7134_IRQ2_INTE_DEC3    |
 667                 SAA7134_IRQ2_INTE_DEC2    |
 668                 SAA7134_IRQ2_INTE_DEC1    |
 669                 SAA7134_IRQ2_INTE_DEC0    |
 670                 SAA7134_IRQ2_INTE_PE      |
 671                 SAA7134_IRQ2_INTE_AR;
 672
 673         if (dev->has_remote == SAA7134_REMOTE_GPIO) {
 674                 if (dev->remote->mask_keydown & 0x10000)
 675                         irq2_mask |= SAA7134_IRQ2_INTE_GPIO16;
 676                 else if (dev->remote->mask_keydown & 0x40000)
 677                         irq2_mask |= SAA7134_IRQ2_INTE_GPIO18;
 678                 else if (dev->remote->mask_keyup & 0x40000)
 679                         irq2_mask |= SAA7134_IRQ2_INTE_GPIO18A;
 680         }
 681
 682         saa_writel(SAA7134_IRQ1, 0);
 683         saa_writel(SAA7134_IRQ2, irq2_mask);
 684
 685         return 0;
 686 }
 687
 688 /* shutdown */
 689 static int saa7134_hwfini(struct saa7134_dev *dev)
 690 {
 691         dprintk("hwfini\n");
 692
 693         if (card_has_mpeg(dev))
 694                 saa7134_ts_fini(dev);
 695         saa7134_input_fini(dev);
 696         saa7134_vbi_fini(dev);
 697         saa7134_video_fini(dev);
 698         saa7134_tvaudio_fini(dev);
 699         return 0;
 700 }
 701
 702 static void __devinit must_configure_manually(void)
 703 {
 704         unsigned int i,p;
 705
 706         printk(KERN_WARNING
 707                "saa7134: <rant>\n"
 708                "saa7134:  Congratulations!  Your TV card vendor saved a few\n"
 709                "saa7134:  cents for a eeprom, thus your pci board has no\n"
 710                "saa7134:  subsystem ID and I can't identify it automatically\n"
 711                "saa7134: </rant>\n"
 712                "saa7134: I feel better now.  Ok, here are the good news:\n"
 713                "saa7134: You can use the card=<nr> insmod option to specify\n"
 714                "saa7134: which board do you have.  The list:\n");
 715         for (i = 0; i < saa7134_bcount; i++) {
 716                 printk(KERN_WARNING "saa7134:   card=%d -> %-40.40s",
 717                        i,saa7134_boards[i].name);
 718                 for (p = 0; saa7134_pci_tbl[p].driver_data; p++) {
 719                         if (saa7134_pci_tbl[p].driver_data != i)
 720                                 continue;
 721                         printk(" %04x:%04x",
 722                                saa7134_pci_tbl[p].subvendor,
 723                                saa7134_pci_tbl[p].subdevice);
 724                 }
 725                 printk("\n");
 726         }
 727 }
 728
 729 static struct video_device *vdev_init(struct saa7134_dev *dev,
 730                                       struct video_device *template,
 731                                       char *type)
 732 {
 733         struct video_device *vfd;
 734
 735         vfd = video_device_alloc();
 736         if (NULL == vfd)
 737                 return NULL;
 738         *vfd = *template;
 739         vfd->minor   = -1;
 740         vfd->dev     = &dev->pci->dev;
 741         vfd->release = video_device_release;
 742         snprintf(vfd->name, sizeof(vfd->name), "%s %s (%s)",
 743                  dev->name, type, saa7134_boards[dev->board].name);
 744         return vfd;
 745 }
 746
 747 static void saa7134_unregister_video(struct saa7134_dev *dev)
 748 {
 749         if (dev->video_dev) {
 750                 if (-1 != dev->video_dev->minor)
 751                         video_unregister_device(dev->video_dev);
 752                 else
 753                         video_device_release(dev->video_dev);
 754                 dev->video_dev = NULL;
 755         }
 756         if (dev->vbi_dev) {
 757                 if (-1 != dev->vbi_dev->minor)
 758                         video_unregister_device(dev->vbi_dev);
 759                 else
 760                         video_device_release(dev->vbi_dev);
 761                 dev->vbi_dev = NULL;
 762         }
 763         if (dev->radio_dev) {
 764                 if (-1 != dev->radio_dev->minor)
 765                         video_unregister_device(dev->radio_dev);
 766                 else
 767                         video_device_release(dev->radio_dev);
 768                 dev->radio_dev = NULL;
 769         }
 770 }
 771
 772 static void mpeg_ops_attach(struct saa7134_mpeg_ops *ops,
 773                             struct saa7134_dev *dev)
 774 {
 775         int err;
 776
 777         if (NULL != dev->mops)
 778                 return;
 779         if (saa7134_boards[dev->board].mpeg != ops->type)
 780                 return;
 781         err = ops->init(dev);
 782         if (0 != err)
 783                 return;
 784         dev->mops = ops;
 785 }
 786
 787 static void mpeg_ops_detach(struct saa7134_mpeg_ops *ops,
 788                             struct saa7134_dev *dev)
 789 {
 790         if (NULL == dev->mops)
 791                 return;
 792         if (dev->mops != ops)
 793                 return;
 794         dev->mops->fini(dev);
 795         dev->mops = NULL;
 796 }
 797
 798 static int __devinit saa7134_initdev(struct pci_dev *pci_dev,
 799                                      const struct pci_device_id *pci_id)
 800 {
 801         struct saa7134_dev *dev;
 802         struct list_head *item;
 803         struct saa7134_mpeg_ops *mops;
 804         int err;
 805
 806         dev = kmalloc(sizeof(*dev),GFP_KERNEL);
 807         if (NULL == dev)
 808                 return -ENOMEM;
 809         memset(dev,0,sizeof(*dev));
 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         down(&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         up(&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         down(&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         up(&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         down(&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         up(&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         down(&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         up(&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  */