drivers/media/pci/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 "saa7134.h"
  24 #include "saa7134-reg.h"
  25
  26 #include <linux/init.h>
  27 #include <linux/list.h>
  28 #include <linux/module.h>
  29 #include <linux/kernel.h>
  30 #include <linux/slab.h>
  31 #include <linux/kmod.h>
  32 #include <linux/sound.h>
  33 #include <linux/interrupt.h>
  34 #include <linux/delay.h>
  35 #include <linux/mutex.h>
  36 #include <linux/dma-mapping.h>
  37 #include <linux/pm.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 MODULE_VERSION(SAA7134_VERSION);
  43
  44
  45 /* ------------------------------------------------------------------ */
  46
  47 static unsigned int irq_debug;
  48 module_param(irq_debug, int, 0644);
  49 MODULE_PARM_DESC(irq_debug,"enable debug messages [IRQ handler]");
  50
  51 static unsigned int core_debug;
  52 module_param(core_debug, int, 0644);
  53 MODULE_PARM_DESC(core_debug,"enable debug messages [core]");
  54
  55 static unsigned int gpio_tracking;
  56 module_param(gpio_tracking, int, 0644);
  57 MODULE_PARM_DESC(gpio_tracking,"enable debug messages [gpio]");
  58
  59 static unsigned int alsa = 1;
  60 module_param(alsa, int, 0644);
  61 MODULE_PARM_DESC(alsa,"enable/disable ALSA DMA sound [dmasound]");
  62
  63 static unsigned int latency = UNSET;
  64 module_param(latency, int, 0444);
  65 MODULE_PARM_DESC(latency,"pci latency timer");
  66
  67 int saa7134_no_overlay=-1;
  68 module_param_named(no_overlay, saa7134_no_overlay, int, 0444);
  69 MODULE_PARM_DESC(no_overlay,"allow override overlay default (0 disables, 1 enables)"
  70                 " [some VIA/SIS chipsets are known to have problem with overlay]");
  71
  72 bool saa7134_userptr;
  73 module_param(saa7134_userptr, bool, 0644);
  74 MODULE_PARM_DESC(saa7134_userptr, "enable page-aligned userptr support");
  75
  76 static unsigned int video_nr[] = {[0 ... (SAA7134_MAXBOARDS - 1)] = UNSET };
  77 static unsigned int vbi_nr[]   = {[0 ... (SAA7134_MAXBOARDS - 1)] = UNSET };
  78 static unsigned int radio_nr[] = {[0 ... (SAA7134_MAXBOARDS - 1)] = UNSET };
  79 static unsigned int tuner[]    = {[0 ... (SAA7134_MAXBOARDS - 1)] = UNSET };
  80 static unsigned int card[]     = {[0 ... (SAA7134_MAXBOARDS - 1)] = UNSET };
  81
  82
  83 module_param_array(video_nr, int, NULL, 0444);
  84 module_param_array(vbi_nr,   int, NULL, 0444);
  85 module_param_array(radio_nr, int, NULL, 0444);
  86 module_param_array(tuner,    int, NULL, 0444);
  87 module_param_array(card,     int, NULL, 0444);
  88
  89 MODULE_PARM_DESC(video_nr, "video device number");
  90 MODULE_PARM_DESC(vbi_nr,   "vbi device number");
  91 MODULE_PARM_DESC(radio_nr, "radio device number");
  92 MODULE_PARM_DESC(tuner,    "tuner type");
  93 MODULE_PARM_DESC(card,     "card type");
  94
  95 DEFINE_MUTEX(saa7134_devlist_lock);
  96 EXPORT_SYMBOL(saa7134_devlist_lock);
  97 LIST_HEAD(saa7134_devlist);
  98 EXPORT_SYMBOL(saa7134_devlist);
  99 static LIST_HEAD(mops_list);
 100 static unsigned int saa7134_devcount;
 101
 102 int (*saa7134_dmasound_init)(struct saa7134_dev *dev);
 103 int (*saa7134_dmasound_exit)(struct saa7134_dev *dev);
 104
 105 #define core_dbg(fmt, arg...) do { \
 106         if (core_debug) \
 107                 printk(KERN_DEBUG pr_fmt("core: " fmt), ## arg); \
 108         } while (0)
 109
 110 #define irq_dbg(level, fmt, arg...)  do {\
 111         if (irq_debug > level) \
 112                 printk(KERN_DEBUG pr_fmt("irq: " fmt), ## arg); \
 113         } while (0)
 114
 115 void saa7134_track_gpio(struct saa7134_dev *dev, char *msg)
 116 {
 117         unsigned long mode,status;
 118
 119         if (!gpio_tracking)
 120                 return;
 121         /* rising SAA7134_GPIO_GPRESCAN reads the status */
 122         saa_andorb(SAA7134_GPIO_GPMODE3,SAA7134_GPIO_GPRESCAN,0);
 123         saa_andorb(SAA7134_GPIO_GPMODE3,SAA7134_GPIO_GPRESCAN,SAA7134_GPIO_GPRESCAN);
 124         mode   = saa_readl(SAA7134_GPIO_GPMODE0   >> 2) & 0xfffffff;
 125         status = saa_readl(SAA7134_GPIO_GPSTATUS0 >> 2) & 0xfffffff;
 126         core_dbg("%s: gpio: mode=0x%07lx in=0x%07lx out=0x%07lx [%s]\n",
 127                dev->name, mode, (~mode) & status, mode & status, msg);
 128 }
 129
 130 void saa7134_set_gpio(struct saa7134_dev *dev, int bit_no, int value)
 131 {
 132         u32 index, bitval;
 133
 134         index = 1 << bit_no;
 135         switch (value) {
 136         case 0: /* static value */
 137         case 1:
 138                 core_dbg("setting GPIO%d to static %d\n", bit_no, value);
 139                 /* turn sync mode off if necessary */
 140                 if (index & 0x00c00000)
 141                         saa_andorb(SAA7134_VIDEO_PORT_CTRL6, 0x0f, 0x00);
 142                 if (value)
 143                         bitval = index;
 144                 else
 145                         bitval = 0;
 146                 saa_andorl(SAA7134_GPIO_GPMODE0 >> 2, index, index);
 147                 saa_andorl(SAA7134_GPIO_GPSTATUS0 >> 2, index, bitval);
 148                 break;
 149         case 3: /* tristate */
 150                 core_dbg("setting GPIO%d to tristate\n", bit_no);
 151                 saa_andorl(SAA7134_GPIO_GPMODE0 >> 2, index, 0);
 152                 break;
 153         }
 154 }
 155
 156 /* ------------------------------------------------------------------ */
 157
 158
 159 /* ----------------------------------------------------------- */
 160 /* delayed request_module                                      */
 161
 162 #if defined(CONFIG_MODULES) && defined(MODULE)
 163
 164 static void request_module_async(struct work_struct *work){
 165         struct saa7134_dev* dev = container_of(work, struct saa7134_dev, request_module_wk);
 166         if (card_is_empress(dev))
 167                 request_module("saa7134-empress");
 168         if (card_is_dvb(dev))
 169                 request_module("saa7134-dvb");
 170         if (card_is_go7007(dev))
 171                 request_module("saa7134-go7007");
 172         if (alsa) {
 173                 if (dev->pci->device != PCI_DEVICE_ID_PHILIPS_SAA7130)
 174                         request_module("saa7134-alsa");
 175         }
 176 }
 177
 178 static void request_submodules(struct saa7134_dev *dev)
 179 {
 180         INIT_WORK(&dev->request_module_wk, request_module_async);
 181         schedule_work(&dev->request_module_wk);
 182 }
 183
 184 static void flush_request_submodules(struct saa7134_dev *dev)
 185 {
 186         flush_work(&dev->request_module_wk);
 187 }
 188
 189 #else
 190 #define request_submodules(dev)
 191 #define flush_request_submodules(dev)
 192 #endif /* CONFIG_MODULES */
 193
 194 /* ------------------------------------------------------------------ */
 195
 196 /* nr of (saa7134-)pages for the given buffer size */
 197 static int saa7134_buffer_pages(int size)
 198 {
 199         size  = PAGE_ALIGN(size);
 200         size += PAGE_SIZE; /* for non-page-aligned buffers */
 201         size /= 4096;
 202         return size;
 203 }
 204
 205 /* calc max # of buffers from size (must not exceed the 4MB virtual
 206  * address space per DMA channel) */
 207 int saa7134_buffer_count(unsigned int size, unsigned int count)
 208 {
 209         unsigned int maxcount;
 210
 211         maxcount = 1024 / saa7134_buffer_pages(size);
 212         if (count > maxcount)
 213                 count = maxcount;
 214         return count;
 215 }
 216
 217 int saa7134_buffer_startpage(struct saa7134_buf *buf)
 218 {
 219         return saa7134_buffer_pages(vb2_plane_size(&buf->vb2.vb2_buf, 0))
 220                         * buf->vb2.vb2_buf.index;
 221 }
 222
 223 unsigned long saa7134_buffer_base(struct saa7134_buf *buf)
 224 {
 225         unsigned long base;
 226         struct sg_table *dma = vb2_dma_sg_plane_desc(&buf->vb2.vb2_buf, 0);
 227
 228         base  = saa7134_buffer_startpage(buf) * 4096;
 229         base += dma->sgl[0].offset;
 230         return base;
 231 }
 232
 233 /* ------------------------------------------------------------------ */
 234
 235 int saa7134_pgtable_alloc(struct pci_dev *pci, struct saa7134_pgtable *pt)
 236 {
 237         __le32       *cpu;
 238         dma_addr_t   dma_addr = 0;
 239
 240         cpu = pci_alloc_consistent(pci, SAA7134_PGTABLE_SIZE, &dma_addr);
 241         if (NULL == cpu)
 242                 return -ENOMEM;
 243         pt->size = SAA7134_PGTABLE_SIZE;
 244         pt->cpu  = cpu;
 245         pt->dma  = dma_addr;
 246         return 0;
 247 }
 248
 249 int saa7134_pgtable_build(struct pci_dev *pci, struct saa7134_pgtable *pt,
 250                           struct scatterlist *list, unsigned int length,
 251                           unsigned int startpage)
 252 {
 253         __le32        *ptr;
 254         unsigned int  i, p;
 255
 256         BUG_ON(NULL == pt || NULL == pt->cpu);
 257
 258         ptr = pt->cpu + startpage;
 259         for (i = 0; i < length; i++, list = sg_next(list)) {
 260                 for (p = 0; p * 4096 < list->length; p++, ptr++)
 261                         *ptr = cpu_to_le32(sg_dma_address(list) +
 262                                                 list->offset + p * 4096);
 263         }
 264         return 0;
 265 }
 266
 267 void saa7134_pgtable_free(struct pci_dev *pci, struct saa7134_pgtable *pt)
 268 {
 269         if (NULL == pt->cpu)
 270                 return;
 271         pci_free_consistent(pci, pt->size, pt->cpu, pt->dma);
 272         pt->cpu = NULL;
 273 }
 274
 275 /* ------------------------------------------------------------------ */
 276
 277 int saa7134_buffer_queue(struct saa7134_dev *dev,
 278                          struct saa7134_dmaqueue *q,
 279                          struct saa7134_buf *buf)
 280 {
 281         struct saa7134_buf *next = NULL;
 282         unsigned long flags;
 283
 284         spin_lock_irqsave(&dev->slock, flags);
 285         core_dbg("buffer_queue %p\n", buf);
 286         if (NULL == q->curr) {
 287                 if (!q->need_two) {
 288                         q->curr = buf;
 289                         buf->activate(dev, buf, NULL);
 290                 } else if (list_empty(&q->queue)) {
 291                         list_add_tail(&buf->entry, &q->queue);
 292                 } else {
 293                         next = list_entry(q->queue.next, struct saa7134_buf,
 294                                           entry);
 295                         q->curr = buf;
 296                         buf->activate(dev, buf, next);
 297                 }
 298         } else {
 299                 list_add_tail(&buf->entry, &q->queue);
 300         }
 301         spin_unlock_irqrestore(&dev->slock, flags);
 302         return 0;
 303 }
 304
 305 void saa7134_buffer_finish(struct saa7134_dev *dev,
 306                            struct saa7134_dmaqueue *q,
 307                            unsigned int state)
 308 {
 309         core_dbg("buffer_finish %p\n", q->curr);
 310
 311         /* finish current buffer */
 312         v4l2_get_timestamp(&q->curr->vb2.timestamp);
 313         q->curr->vb2.sequence = q->seq_nr++;
 314         vb2_buffer_done(&q->curr->vb2.vb2_buf, state);
 315         q->curr = NULL;
 316 }
 317
 318 void saa7134_buffer_next(struct saa7134_dev *dev,
 319                          struct saa7134_dmaqueue *q)
 320 {
 321         struct saa7134_buf *buf,*next = NULL;
 322
 323         assert_spin_locked(&dev->slock);
 324         BUG_ON(NULL != q->curr);
 325
 326         if (!list_empty(&q->queue)) {
 327                 /* activate next one from queue */
 328                 buf = list_entry(q->queue.next, struct saa7134_buf, entry);
 329                 core_dbg("buffer_next %p [prev=%p/next=%p]\n",
 330                         buf, q->queue.prev, q->queue.next);
 331                 list_del(&buf->entry);
 332                 if (!list_empty(&q->queue))
 333                         next = list_entry(q->queue.next, struct saa7134_buf, entry);
 334                 q->curr = buf;
 335                 buf->activate(dev, buf, next);
 336                 core_dbg("buffer_next #2 prev=%p/next=%p\n",
 337                         q->queue.prev, q->queue.next);
 338         } else {
 339                 /* nothing to do -- just stop DMA */
 340                 core_dbg("buffer_next %p\n", NULL);
 341                 saa7134_set_dmabits(dev);
 342                 del_timer(&q->timeout);
 343         }
 344 }
 345
 346 void saa7134_buffer_timeout(unsigned long data)
 347 {
 348         struct saa7134_dmaqueue *q = (struct saa7134_dmaqueue *)data;
 349         struct saa7134_dev *dev = q->dev;
 350         unsigned long flags;
 351
 352         spin_lock_irqsave(&dev->slock, flags);
 353
 354         /* try to reset the hardware (SWRST) */
 355         saa_writeb(SAA7134_REGION_ENABLE, 0x00);
 356         saa_writeb(SAA7134_REGION_ENABLE, 0x80);
 357         saa_writeb(SAA7134_REGION_ENABLE, 0x00);
 358
 359         /* flag current buffer as failed,
 360            try to start over with the next one. */
 361         if (q->curr) {
 362                 core_dbg("timeout on %p\n", q->curr);
 363                 saa7134_buffer_finish(dev, q, VB2_BUF_STATE_ERROR);
 364         }
 365         saa7134_buffer_next(dev, q);
 366         spin_unlock_irqrestore(&dev->slock, flags);
 367 }
 368
 369 void saa7134_stop_streaming(struct saa7134_dev *dev, struct saa7134_dmaqueue *q)
 370 {
 371         unsigned long flags;
 372         struct list_head *pos, *n;
 373         struct saa7134_buf *tmp;
 374
 375         spin_lock_irqsave(&dev->slock, flags);
 376         if (!list_empty(&q->queue)) {
 377                 list_for_each_safe(pos, n, &q->queue) {
 378                          tmp = list_entry(pos, struct saa7134_buf, entry);
 379                          vb2_buffer_done(&tmp->vb2.vb2_buf,
 380                                          VB2_BUF_STATE_ERROR);
 381                          list_del(pos);
 382                          tmp = NULL;
 383                 }
 384         }
 385         spin_unlock_irqrestore(&dev->slock, flags);
 386         saa7134_buffer_timeout((unsigned long)q); /* also calls del_timer(&q->timeout) */
 387 }
 388 EXPORT_SYMBOL_GPL(saa7134_stop_streaming);
 389
 390 /* ------------------------------------------------------------------ */
 391
 392 int saa7134_set_dmabits(struct saa7134_dev *dev)
 393 {
 394         u32 split, task=0, ctrl=0, irq=0;
 395         enum v4l2_field cap = V4L2_FIELD_ANY;
 396         enum v4l2_field ov  = V4L2_FIELD_ANY;
 397
 398         assert_spin_locked(&dev->slock);
 399
 400         if (dev->insuspend)
 401                 return 0;
 402
 403         /* video capture -- dma 0 + video task A */
 404         if (dev->video_q.curr) {
 405                 task |= 0x01;
 406                 ctrl |= SAA7134_MAIN_CTRL_TE0;
 407                 irq  |= SAA7134_IRQ1_INTE_RA0_1 |
 408                         SAA7134_IRQ1_INTE_RA0_0;
 409                 cap = dev->field;
 410         }
 411
 412         /* video capture -- dma 1+2 (planar modes) */
 413         if (dev->video_q.curr && dev->fmt->planar) {
 414                 ctrl |= SAA7134_MAIN_CTRL_TE4 |
 415                         SAA7134_MAIN_CTRL_TE5;
 416         }
 417
 418         /* screen overlay -- dma 0 + video task B */
 419         if (dev->ovenable) {
 420                 task |= 0x10;
 421                 ctrl |= SAA7134_MAIN_CTRL_TE1;
 422                 ov = dev->ovfield;
 423         }
 424
 425         /* vbi capture -- dma 0 + vbi task A+B */
 426         if (dev->vbi_q.curr) {
 427                 task |= 0x22;
 428                 ctrl |= SAA7134_MAIN_CTRL_TE2 |
 429                         SAA7134_MAIN_CTRL_TE3;
 430                 irq  |= SAA7134_IRQ1_INTE_RA0_7 |
 431                         SAA7134_IRQ1_INTE_RA0_6 |
 432                         SAA7134_IRQ1_INTE_RA0_5 |
 433                         SAA7134_IRQ1_INTE_RA0_4;
 434         }
 435
 436         /* audio capture -- dma 3 */
 437         if (dev->dmasound.dma_running) {
 438                 ctrl |= SAA7134_MAIN_CTRL_TE6;
 439                 irq  |= SAA7134_IRQ1_INTE_RA3_1 |
 440                         SAA7134_IRQ1_INTE_RA3_0;
 441         }
 442
 443         /* TS capture -- dma 5 */
 444         if (dev->ts_q.curr) {
 445                 ctrl |= SAA7134_MAIN_CTRL_TE5;
 446                 irq  |= SAA7134_IRQ1_INTE_RA2_1 |
 447                         SAA7134_IRQ1_INTE_RA2_0;
 448         }
 449
 450         /* set task conditions + field handling */
 451         if (V4L2_FIELD_HAS_BOTH(cap) || V4L2_FIELD_HAS_BOTH(ov) || cap == ov) {
 452                 /* default config -- use full frames */
 453                 saa_writeb(SAA7134_TASK_CONDITIONS(TASK_A), 0x0d);
 454                 saa_writeb(SAA7134_TASK_CONDITIONS(TASK_B), 0x0d);
 455                 saa_writeb(SAA7134_FIELD_HANDLING(TASK_A),  0x02);
 456                 saa_writeb(SAA7134_FIELD_HANDLING(TASK_B),  0x02);
 457                 split = 0;
 458         } else {
 459                 /* split fields between tasks */
 460                 if (V4L2_FIELD_TOP == cap) {
 461                         /* odd A, even B, repeat */
 462                         saa_writeb(SAA7134_TASK_CONDITIONS(TASK_A), 0x0d);
 463                         saa_writeb(SAA7134_TASK_CONDITIONS(TASK_B), 0x0e);
 464                 } else {
 465                         /* odd B, even A, repeat */
 466                         saa_writeb(SAA7134_TASK_CONDITIONS(TASK_A), 0x0e);
 467                         saa_writeb(SAA7134_TASK_CONDITIONS(TASK_B), 0x0d);
 468                 }
 469                 saa_writeb(SAA7134_FIELD_HANDLING(TASK_A),  0x01);
 470                 saa_writeb(SAA7134_FIELD_HANDLING(TASK_B),  0x01);
 471                 split = 1;
 472         }
 473
 474         /* irqs */
 475         saa_writeb(SAA7134_REGION_ENABLE, task);
 476         saa_writel(SAA7134_IRQ1,          irq);
 477         saa_andorl(SAA7134_MAIN_CTRL,
 478                    SAA7134_MAIN_CTRL_TE0 |
 479                    SAA7134_MAIN_CTRL_TE1 |
 480                    SAA7134_MAIN_CTRL_TE2 |
 481                    SAA7134_MAIN_CTRL_TE3 |
 482                    SAA7134_MAIN_CTRL_TE4 |
 483                    SAA7134_MAIN_CTRL_TE5 |
 484                    SAA7134_MAIN_CTRL_TE6,
 485                    ctrl);
 486         core_dbg("dmabits: task=0x%02x ctrl=0x%02x irq=0x%x split=%s\n",
 487                 task, ctrl, irq, split ? "no" : "yes");
 488
 489         return 0;
 490 }
 491
 492 /* ------------------------------------------------------------------ */
 493 /* IRQ handler + helpers                                              */
 494
 495 static char *irqbits[] = {
 496         "DONE_RA0", "DONE_RA1", "DONE_RA2", "DONE_RA3",
 497         "AR", "PE", "PWR_ON", "RDCAP", "INTL", "FIDT", "MMC",
 498         "TRIG_ERR", "CONF_ERR", "LOAD_ERR",
 499         "GPIO16", "GPIO18", "GPIO22", "GPIO23"
 500 };
 501 #define IRQBITS ARRAY_SIZE(irqbits)
 502
 503 static void print_irqstatus(struct saa7134_dev *dev, int loop,
 504                             unsigned long report, unsigned long status)
 505 {
 506         unsigned int i;
 507
 508         irq_dbg(1, "[%d,%ld]: r=0x%lx s=0x%02lx",
 509                 loop, jiffies, report, status);
 510         for (i = 0; i < IRQBITS; i++) {
 511                 if (!(report & (1 << i)))
 512                         continue;
 513                 pr_cont(" %s", irqbits[i]);
 514         }
 515         if (report & SAA7134_IRQ_REPORT_DONE_RA0) {
 516                 pr_cont(" | RA0=%s,%s,%s,%ld",
 517                         (status & 0x40) ? "vbi"  : "video",
 518                         (status & 0x20) ? "b"    : "a",
 519                         (status & 0x10) ? "odd"  : "even",
 520                         (status & 0x0f));
 521         }
 522         pr_cont("\n");
 523 }
 524
 525 static irqreturn_t saa7134_irq(int irq, void *dev_id)
 526 {
 527         struct saa7134_dev *dev = (struct saa7134_dev*) dev_id;
 528         unsigned long report,status;
 529         int loop, handled = 0;
 530
 531         if (dev->insuspend)
 532                 goto out;
 533
 534         for (loop = 0; loop < 10; loop++) {
 535                 report = saa_readl(SAA7134_IRQ_REPORT);
 536                 status = saa_readl(SAA7134_IRQ_STATUS);
 537
 538                 /* If dmasound support is active and we get a sound report,
 539                  * mask out the report and let the saa7134-alsa module deal
 540                  * with it */
 541                 if ((report & SAA7134_IRQ_REPORT_DONE_RA3) &&
 542                         (dev->dmasound.priv_data != NULL) )
 543                 {
 544                         irq_dbg(2, "preserving DMA sound interrupt\n");
 545                         report &= ~SAA7134_IRQ_REPORT_DONE_RA3;
 546                 }
 547
 548                 if (0 == report) {
 549                         irq_dbg(2, "no (more) work\n");
 550                         goto out;
 551                 }
 552
 553                 handled = 1;
 554                 saa_writel(SAA7134_IRQ_REPORT,report);
 555                 if (irq_debug)
 556                         print_irqstatus(dev,loop,report,status);
 557
 558
 559                 if ((report & SAA7134_IRQ_REPORT_RDCAP) ||
 560                         (report & SAA7134_IRQ_REPORT_INTL))
 561                                 saa7134_irq_video_signalchange(dev);
 562
 563
 564                 if ((report & SAA7134_IRQ_REPORT_DONE_RA0) &&
 565                     (status & 0x60) == 0)
 566                         saa7134_irq_video_done(dev,status);
 567
 568                 if ((report & SAA7134_IRQ_REPORT_DONE_RA0) &&
 569                     (status & 0x40) == 0x40)
 570                         saa7134_irq_vbi_done(dev,status);
 571
 572                 if ((report & SAA7134_IRQ_REPORT_DONE_RA2) &&
 573                     card_has_mpeg(dev)) {
 574                         if (dev->mops->irq_ts_done != NULL)
 575                                 dev->mops->irq_ts_done(dev, status);
 576                         else
 577                                 saa7134_irq_ts_done(dev, status);
 578                 }
 579
 580                 if (report & SAA7134_IRQ_REPORT_GPIO16) {
 581                         switch (dev->has_remote) {
 582                                 case SAA7134_REMOTE_GPIO:
 583                                         if (!dev->remote)
 584                                                 break;
 585                                         if  (dev->remote->mask_keydown & 0x10000) {
 586                                                 saa7134_input_irq(dev);
 587                                         }
 588                                         break;
 589
 590                                 case SAA7134_REMOTE_I2C:
 591                                         break;                  /* FIXME: invoke I2C get_key() */
 592
 593                                 default:                        /* GPIO16 not used by IR remote */
 594                                         break;
 595                         }
 596                 }
 597
 598                 if (report & SAA7134_IRQ_REPORT_GPIO18) {
 599                         switch (dev->has_remote) {
 600                                 case SAA7134_REMOTE_GPIO:
 601                                         if (!dev->remote)
 602                                                 break;
 603                                         if ((dev->remote->mask_keydown & 0x40000) ||
 604                                             (dev->remote->mask_keyup & 0x40000)) {
 605                                                 saa7134_input_irq(dev);
 606                                         }
 607                                         break;
 608
 609                                 case SAA7134_REMOTE_I2C:
 610                                         break;                  /* FIXME: invoke I2C get_key() */
 611
 612                                 default:                        /* GPIO18 not used by IR remote */
 613                                         break;
 614                         }
 615                 }
 616         }
 617
 618         if (10 == loop) {
 619                 print_irqstatus(dev,loop,report,status);
 620                 if (report & SAA7134_IRQ_REPORT_PE) {
 621                         /* disable all parity error */
 622                         pr_warn("%s/irq: looping -- "
 623                                "clearing PE (parity error!) enable bit\n",dev->name);
 624                         saa_clearl(SAA7134_IRQ2,SAA7134_IRQ2_INTE_PE);
 625                 } else if (report & SAA7134_IRQ_REPORT_GPIO16) {
 626                         /* disable gpio16 IRQ */
 627                         pr_warn("%s/irq: looping -- "
 628                                "clearing GPIO16 enable bit\n",dev->name);
 629                         saa_clearl(SAA7134_IRQ2, SAA7134_IRQ2_INTE_GPIO16_P);
 630                         saa_clearl(SAA7134_IRQ2, SAA7134_IRQ2_INTE_GPIO16_N);
 631                 } else if (report & SAA7134_IRQ_REPORT_GPIO18) {
 632                         /* disable gpio18 IRQs */
 633                         pr_warn("%s/irq: looping -- "
 634                                "clearing GPIO18 enable bit\n",dev->name);
 635                         saa_clearl(SAA7134_IRQ2, SAA7134_IRQ2_INTE_GPIO18_P);
 636                         saa_clearl(SAA7134_IRQ2, SAA7134_IRQ2_INTE_GPIO18_N);
 637                 } else {
 638                         /* disable all irqs */
 639                         pr_warn("%s/irq: looping -- "
 640                                "clearing all enable bits\n",dev->name);
 641                         saa_writel(SAA7134_IRQ1,0);
 642                         saa_writel(SAA7134_IRQ2,0);
 643                 }
 644         }
 645
 646  out:
 647         return IRQ_RETVAL(handled);
 648 }
 649
 650 /* ------------------------------------------------------------------ */
 651
 652 /* early init (no i2c, no irq) */
 653
 654 static int saa7134_hw_enable1(struct saa7134_dev *dev)
 655 {
 656         /* RAM FIFO config */
 657         saa_writel(SAA7134_FIFO_SIZE, 0x08070503);
 658         saa_writel(SAA7134_THRESHOULD, 0x02020202);
 659
 660         /* enable audio + video processing */
 661         saa_writel(SAA7134_MAIN_CTRL,
 662                         SAA7134_MAIN_CTRL_VPLLE |
 663                         SAA7134_MAIN_CTRL_APLLE |
 664                         SAA7134_MAIN_CTRL_EXOSC |
 665                         SAA7134_MAIN_CTRL_EVFE1 |
 666                         SAA7134_MAIN_CTRL_EVFE2 |
 667                         SAA7134_MAIN_CTRL_ESFE  |
 668                         SAA7134_MAIN_CTRL_EBDAC);
 669
 670         /*
 671         * Initialize OSS _after_ enabling audio clock PLL and audio processing.
 672         * OSS initialization writes to registers via the audio DSP; these
 673         * writes will fail unless the audio clock has been started.  At worst,
 674         * audio will not work.
 675         */
 676
 677         /* enable peripheral devices */
 678         saa_writeb(SAA7134_SPECIAL_MODE, 0x01);
 679
 680         /* set vertical line numbering start (vbi needs this) */
 681         saa_writeb(SAA7134_SOURCE_TIMING2, 0x20);
 682
 683         return 0;
 684 }
 685
 686 static int saa7134_hwinit1(struct saa7134_dev *dev)
 687 {
 688         core_dbg("hwinit1\n");
 689
 690         saa_writel(SAA7134_IRQ1, 0);
 691         saa_writel(SAA7134_IRQ2, 0);
 692
 693         /* Clear any stale IRQ reports */
 694         saa_writel(SAA7134_IRQ_REPORT, saa_readl(SAA7134_IRQ_REPORT));
 695
 696         mutex_init(&dev->lock);
 697         spin_lock_init(&dev->slock);
 698
 699         saa7134_track_gpio(dev,"pre-init");
 700         saa7134_video_init1(dev);
 701         saa7134_vbi_init1(dev);
 702         if (card_has_mpeg(dev))
 703                 saa7134_ts_init1(dev);
 704         saa7134_input_init1(dev);
 705
 706         saa7134_hw_enable1(dev);
 707
 708         return 0;
 709 }
 710
 711 /* late init (with i2c + irq) */
 712 static int saa7134_hw_enable2(struct saa7134_dev *dev)
 713 {
 714
 715         unsigned int irq2_mask;
 716
 717         /* enable IRQ's */
 718         irq2_mask =
 719                 SAA7134_IRQ2_INTE_DEC3    |
 720                 SAA7134_IRQ2_INTE_DEC2    |
 721                 SAA7134_IRQ2_INTE_DEC1    |
 722                 SAA7134_IRQ2_INTE_DEC0    |
 723                 SAA7134_IRQ2_INTE_PE      |
 724                 SAA7134_IRQ2_INTE_AR;
 725
 726         if (dev->has_remote == SAA7134_REMOTE_GPIO && dev->remote) {
 727                 if (dev->remote->mask_keydown & 0x10000)
 728                         irq2_mask |= SAA7134_IRQ2_INTE_GPIO16_N;
 729                 else {          /* Allow enabling both IRQ edge triggers */
 730                         if (dev->remote->mask_keydown & 0x40000)
 731                                 irq2_mask |= SAA7134_IRQ2_INTE_GPIO18_P;
 732                         if (dev->remote->mask_keyup & 0x40000)
 733                                 irq2_mask |= SAA7134_IRQ2_INTE_GPIO18_N;
 734                 }
 735         }
 736
 737         if (dev->has_remote == SAA7134_REMOTE_I2C) {
 738                 request_module("ir-kbd-i2c");
 739         }
 740
 741         saa_writel(SAA7134_IRQ1, 0);
 742         saa_writel(SAA7134_IRQ2, irq2_mask);
 743
 744         return 0;
 745 }
 746
 747 static int saa7134_hwinit2(struct saa7134_dev *dev)
 748 {
 749
 750         core_dbg("hwinit2\n");
 751
 752         saa7134_video_init2(dev);
 753         saa7134_tvaudio_init2(dev);
 754
 755         saa7134_hw_enable2(dev);
 756
 757         return 0;
 758 }
 759
 760
 761 /* shutdown */
 762 static int saa7134_hwfini(struct saa7134_dev *dev)
 763 {
 764         core_dbg("hwfini\n");
 765
 766         if (card_has_mpeg(dev))
 767                 saa7134_ts_fini(dev);
 768         saa7134_input_fini(dev);
 769         saa7134_vbi_fini(dev);
 770         saa7134_tvaudio_fini(dev);
 771         saa7134_video_fini(dev);
 772         return 0;
 773 }
 774
 775 static void must_configure_manually(int has_eeprom)
 776 {
 777         unsigned int i,p;
 778
 779         if (!has_eeprom)
 780                 pr_warn("saa7134: <rant>\n"
 781                         "saa7134:  Congratulations!  Your TV card vendor saved a few\n"
 782                         "saa7134:  cents for a eeprom, thus your pci board has no\n"
 783                         "saa7134:  subsystem ID and I can't identify it automatically\n"
 784                         "saa7134: </rant>\n"
 785                         "saa7134: I feel better now.  Ok, here are the good news:\n"
 786                         "saa7134: You can use the card=<nr> insmod option to specify\n"
 787                         "saa7134: which board do you have.  The list:\n");
 788         else
 789                 pr_warn("saa7134: Board is currently unknown. You might try to use the card=<nr>\n"
 790                         "saa7134: insmod option to specify which board do you have, but this is\n"
 791                         "saa7134: somewhat risky, as might damage your card. It is better to ask\n"
 792                         "saa7134: for support at linux-media@vger.kernel.org.\n"
 793                         "saa7134: The supported cards are:\n");
 794
 795         for (i = 0; i < saa7134_bcount; i++) {
 796                 pr_warn("saa7134:   card=%d -> %-40.40s",
 797                        i,saa7134_boards[i].name);
 798                 for (p = 0; saa7134_pci_tbl[p].driver_data; p++) {
 799                         if (saa7134_pci_tbl[p].driver_data != i)
 800                                 continue;
 801                         pr_cont(" %04x:%04x",
 802                                saa7134_pci_tbl[p].subvendor,
 803                                saa7134_pci_tbl[p].subdevice);
 804                 }
 805                 pr_cont("\n");
 806         }
 807 }
 808
 809 static struct video_device *vdev_init(struct saa7134_dev *dev,
 810                                       struct video_device *template,
 811                                       char *type)
 812 {
 813         struct video_device *vfd;
 814
 815         vfd = video_device_alloc();
 816         if (NULL == vfd)
 817                 return NULL;
 818         *vfd = *template;
 819         vfd->v4l2_dev  = &dev->v4l2_dev;
 820         vfd->release = video_device_release;
 821         snprintf(vfd->name, sizeof(vfd->name), "%s %s (%s)",
 822                  dev->name, type, saa7134_boards[dev->board].name);
 823         video_set_drvdata(vfd, dev);
 824         return vfd;
 825 }
 826
 827 static void saa7134_unregister_video(struct saa7134_dev *dev)
 828 {
 829         if (dev->video_dev) {
 830                 if (video_is_registered(dev->video_dev))
 831                         video_unregister_device(dev->video_dev);
 832                 else
 833                         video_device_release(dev->video_dev);
 834                 dev->video_dev = NULL;
 835         }
 836         if (dev->vbi_dev) {
 837                 if (video_is_registered(dev->vbi_dev))
 838                         video_unregister_device(dev->vbi_dev);
 839                 else
 840                         video_device_release(dev->vbi_dev);
 841                 dev->vbi_dev = NULL;
 842         }
 843         if (dev->radio_dev) {
 844                 if (video_is_registered(dev->radio_dev))
 845                         video_unregister_device(dev->radio_dev);
 846                 else
 847                         video_device_release(dev->radio_dev);
 848                 dev->radio_dev = NULL;
 849         }
 850 }
 851
 852 static void mpeg_ops_attach(struct saa7134_mpeg_ops *ops,
 853                             struct saa7134_dev *dev)
 854 {
 855         int err;
 856
 857         if (NULL != dev->mops)
 858                 return;
 859         if (saa7134_boards[dev->board].mpeg != ops->type)
 860                 return;
 861         err = ops->init(dev);
 862         if (0 != err)
 863                 return;
 864         dev->mops = ops;
 865 }
 866
 867 static void mpeg_ops_detach(struct saa7134_mpeg_ops *ops,
 868                             struct saa7134_dev *dev)
 869 {
 870         if (NULL == dev->mops)
 871                 return;
 872         if (dev->mops != ops)
 873                 return;
 874         dev->mops->fini(dev);
 875         dev->mops = NULL;
 876 }
 877
 878 static int saa7134_initdev(struct pci_dev *pci_dev,
 879                            const struct pci_device_id *pci_id)
 880 {
 881         struct saa7134_dev *dev;
 882         struct saa7134_mpeg_ops *mops;
 883         int err;
 884
 885         if (saa7134_devcount == SAA7134_MAXBOARDS)
 886                 return -ENOMEM;
 887
 888         dev = kzalloc(sizeof(*dev),GFP_KERNEL);
 889         if (NULL == dev)
 890                 return -ENOMEM;
 891
 892         err = v4l2_device_register(&pci_dev->dev, &dev->v4l2_dev);
 893         if (err)
 894                 goto fail0;
 895
 896         /* pci init */
 897         dev->pci = pci_dev;
 898         if (pci_enable_device(pci_dev)) {
 899                 err = -EIO;
 900                 goto fail1;
 901         }
 902
 903         dev->nr = saa7134_devcount;
 904         sprintf(dev->name,"saa%x[%d]",pci_dev->device,dev->nr);
 905
 906         /* pci quirks */
 907         if (pci_pci_problems) {
 908                 if (pci_pci_problems & PCIPCI_TRITON)
 909                         pr_info("%s: quirk: PCIPCI_TRITON\n", dev->name);
 910                 if (pci_pci_problems & PCIPCI_NATOMA)
 911                         pr_info("%s: quirk: PCIPCI_NATOMA\n", dev->name);
 912                 if (pci_pci_problems & PCIPCI_VIAETBF)
 913                         pr_info("%s: quirk: PCIPCI_VIAETBF\n", dev->name);
 914                 if (pci_pci_problems & PCIPCI_VSFX)
 915                         pr_info("%s: quirk: PCIPCI_VSFX\n", dev->name);
 916 #ifdef PCIPCI_ALIMAGIK
 917                 if (pci_pci_problems & PCIPCI_ALIMAGIK) {
 918                         pr_info("%s: quirk: PCIPCI_ALIMAGIK -- latency fixup\n",
 919                                dev->name);
 920                         latency = 0x0A;
 921                 }
 922 #endif
 923                 if (pci_pci_problems & (PCIPCI_FAIL|PCIAGP_FAIL)) {
 924                         pr_info("%s: quirk: this driver and your "
 925                                         "chipset may not work together"
 926                                         " in overlay mode.\n",dev->name);
 927                         if (!saa7134_no_overlay) {
 928                                 pr_info("%s: quirk: overlay "
 929                                                 "mode will be disabled.\n",
 930                                                 dev->name);
 931                                 saa7134_no_overlay = 1;
 932                         } else {
 933                                 pr_info("%s: quirk: overlay "
 934                                                 "mode will be forced. Use this"
 935                                                 " option at your own risk.\n",
 936                                                 dev->name);
 937                         }
 938                 }
 939         }
 940         if (UNSET != latency) {
 941                 pr_info("%s: setting pci latency timer to %d\n",
 942                        dev->name,latency);
 943                 pci_write_config_byte(pci_dev, PCI_LATENCY_TIMER, latency);
 944         }
 945
 946         /* print pci info */
 947         dev->pci_rev = pci_dev->revision;
 948         pci_read_config_byte(pci_dev, PCI_LATENCY_TIMER,  &dev->pci_lat);
 949         pr_info("%s: found at %s, rev: %d, irq: %d, "
 950                "latency: %d, mmio: 0x%llx\n", dev->name,
 951                pci_name(pci_dev), dev->pci_rev, pci_dev->irq,
 952                dev->pci_lat,(unsigned long long)pci_resource_start(pci_dev,0));
 953         pci_set_master(pci_dev);
 954         if (!pci_set_dma_mask(pci_dev, DMA_BIT_MASK(32))) {
 955                 pr_warn("%s: Oops: no 32bit PCI DMA ???\n", dev->name);
 956                 err = -EIO;
 957                 goto fail1;
 958         }
 959
 960         /* board config */
 961         dev->board = pci_id->driver_data;
 962         if ((unsigned)card[dev->nr] < saa7134_bcount)
 963                 dev->board = card[dev->nr];
 964         if (SAA7134_BOARD_UNKNOWN == dev->board)
 965                 must_configure_manually(0);
 966         else if (SAA7134_BOARD_NOAUTO == dev->board) {
 967                 must_configure_manually(1);
 968                 dev->board = SAA7134_BOARD_UNKNOWN;
 969         }
 970         dev->autodetected = card[dev->nr] != dev->board;
 971         dev->tuner_type = saa7134_boards[dev->board].tuner_type;
 972         dev->tuner_addr = saa7134_boards[dev->board].tuner_addr;
 973         dev->radio_type = saa7134_boards[dev->board].radio_type;
 974         dev->radio_addr = saa7134_boards[dev->board].radio_addr;
 975         dev->tda9887_conf = saa7134_boards[dev->board].tda9887_conf;
 976         if (UNSET != tuner[dev->nr])
 977                 dev->tuner_type = tuner[dev->nr];
 978         pr_info("%s: subsystem: %04x:%04x, board: %s [card=%d,%s]\n",
 979                 dev->name,pci_dev->subsystem_vendor,
 980                 pci_dev->subsystem_device,saa7134_boards[dev->board].name,
 981                 dev->board, dev->autodetected ?
 982                 "autodetected" : "insmod option");
 983
 984         /* get mmio */
 985         if (!request_mem_region(pci_resource_start(pci_dev,0),
 986                                 pci_resource_len(pci_dev,0),
 987                                 dev->name)) {
 988                 err = -EBUSY;
 989                 pr_err("%s: can't get MMIO memory @ 0x%llx\n",
 990                        dev->name,(unsigned long long)pci_resource_start(pci_dev,0));
 991                 goto fail1;
 992         }
 993         dev->lmmio = ioremap(pci_resource_start(pci_dev, 0),
 994                              pci_resource_len(pci_dev, 0));
 995         dev->bmmio = (__u8 __iomem *)dev->lmmio;
 996         if (NULL == dev->lmmio) {
 997                 err = -EIO;
 998                 pr_err("%s: can't ioremap() MMIO memory\n",
 999                        dev->name);
1000                 goto fail2;
1001         }
1002
1003         /* initialize hardware #1 */
1004         saa7134_board_init1(dev);
1005         saa7134_hwinit1(dev);
1006
1007         dev->alloc_ctx = vb2_dma_sg_init_ctx(&pci_dev->dev);
1008         if (IS_ERR(dev->alloc_ctx)) {
1009                 err = PTR_ERR(dev->alloc_ctx);
1010                 goto fail3;
1011         }
1012         /* get irq */
1013         err = request_irq(pci_dev->irq, saa7134_irq,
1014                           IRQF_SHARED, dev->name, dev);
1015         if (err < 0) {
1016                 pr_err("%s: can't get IRQ %d\n",
1017                        dev->name,pci_dev->irq);
1018                 goto fail4;
1019         }
1020
1021         /* wait a bit, register i2c bus */
1022         msleep(100);
1023         saa7134_i2c_register(dev);
1024         saa7134_board_init2(dev);
1025
1026         saa7134_hwinit2(dev);
1027
1028         /* load i2c helpers */
1029         if (card_is_empress(dev)) {
1030                 dev->empress_sd =
1031                         v4l2_i2c_new_subdev(&dev->v4l2_dev, &dev->i2c_adap,
1032                                 "saa6752hs",
1033                                 saa7134_boards[dev->board].empress_addr, NULL);
1034
1035                 if (dev->empress_sd)
1036                         dev->empress_sd->grp_id = GRP_EMPRESS;
1037         }
1038
1039         if (saa7134_boards[dev->board].rds_addr) {
1040                 struct v4l2_subdev *sd;
1041
1042                 sd = v4l2_i2c_new_subdev(&dev->v4l2_dev,
1043                                 &dev->i2c_adap, "saa6588",
1044                                 0, I2C_ADDRS(saa7134_boards[dev->board].rds_addr));
1045                 if (sd) {
1046                         pr_info("%s: found RDS decoder\n", dev->name);
1047                         dev->has_rds = 1;
1048                 }
1049         }
1050
1051         mutex_lock(&saa7134_devlist_lock);
1052         list_for_each_entry(mops, &mops_list, next)
1053                 mpeg_ops_attach(mops, dev);
1054         list_add_tail(&dev->devlist, &saa7134_devlist);
1055         mutex_unlock(&saa7134_devlist_lock);
1056
1057         /* check for signal */
1058         saa7134_irq_video_signalchange(dev);
1059
1060         if (TUNER_ABSENT != dev->tuner_type)
1061                 saa_call_all(dev, core, s_power, 0);
1062
1063         /* register v4l devices */
1064         if (saa7134_no_overlay > 0)
1065                 pr_info("%s: Overlay support disabled.\n", dev->name);
1066
1067         dev->video_dev = vdev_init(dev,&saa7134_video_template,"video");
1068         dev->video_dev->ctrl_handler = &dev->ctrl_handler;
1069         dev->video_dev->lock = &dev->lock;
1070         dev->video_dev->queue = &dev->video_vbq;
1071         err = video_register_device(dev->video_dev,VFL_TYPE_GRABBER,
1072                                     video_nr[dev->nr]);
1073         if (err < 0) {
1074                 pr_info("%s: can't register video device\n",
1075                        dev->name);
1076                 goto fail5;
1077         }
1078         pr_info("%s: registered device %s [v4l2]\n",
1079                dev->name, video_device_node_name(dev->video_dev));
1080
1081         dev->vbi_dev = vdev_init(dev, &saa7134_video_template, "vbi");
1082         dev->vbi_dev->ctrl_handler = &dev->ctrl_handler;
1083         dev->vbi_dev->lock = &dev->lock;
1084         dev->vbi_dev->queue = &dev->vbi_vbq;
1085
1086         err = video_register_device(dev->vbi_dev,VFL_TYPE_VBI,
1087                                     vbi_nr[dev->nr]);
1088         if (err < 0)
1089                 goto fail5;
1090         pr_info("%s: registered device %s\n",
1091                dev->name, video_device_node_name(dev->vbi_dev));
1092
1093         if (card_has_radio(dev)) {
1094                 dev->radio_dev = vdev_init(dev,&saa7134_radio_template,"radio");
1095                 dev->radio_dev->ctrl_handler = &dev->radio_ctrl_handler;
1096                 dev->radio_dev->lock = &dev->lock;
1097                 err = video_register_device(dev->radio_dev,VFL_TYPE_RADIO,
1098                                             radio_nr[dev->nr]);
1099                 if (err < 0)
1100                         goto fail5;
1101                 pr_info("%s: registered device %s\n",
1102                        dev->name, video_device_node_name(dev->radio_dev));
1103         }
1104
1105         /* everything worked */
1106         saa7134_devcount++;
1107
1108         if (saa7134_dmasound_init && !dev->dmasound.priv_data)
1109                 saa7134_dmasound_init(dev);
1110
1111         request_submodules(dev);
1112         return 0;
1113
1114  fail5:
1115         saa7134_unregister_video(dev);
1116         saa7134_i2c_unregister(dev);
1117         free_irq(pci_dev->irq, dev);
1118  fail4:
1119         vb2_dma_sg_cleanup_ctx(dev->alloc_ctx);
1120  fail3:
1121         saa7134_hwfini(dev);
1122         iounmap(dev->lmmio);
1123  fail2:
1124         release_mem_region(pci_resource_start(pci_dev,0),
1125                            pci_resource_len(pci_dev,0));
1126  fail1:
1127         v4l2_device_unregister(&dev->v4l2_dev);
1128  fail0:
1129         kfree(dev);
1130         return err;
1131 }
1132
1133 static void saa7134_finidev(struct pci_dev *pci_dev)
1134 {
1135         struct v4l2_device *v4l2_dev = pci_get_drvdata(pci_dev);
1136         struct saa7134_dev *dev = container_of(v4l2_dev, struct saa7134_dev, v4l2_dev);
1137         struct saa7134_mpeg_ops *mops;
1138
1139         flush_request_submodules(dev);
1140
1141         /* Release DMA sound modules if present */
1142         if (saa7134_dmasound_exit && dev->dmasound.priv_data) {
1143                 saa7134_dmasound_exit(dev);
1144         }
1145
1146         /* debugging ... */
1147         if (irq_debug) {
1148                 u32 report = saa_readl(SAA7134_IRQ_REPORT);
1149                 u32 status = saa_readl(SAA7134_IRQ_STATUS);
1150                 print_irqstatus(dev,42,report,status);
1151         }
1152
1153         /* disable peripheral devices */
1154         saa_writeb(SAA7134_SPECIAL_MODE,0);
1155
1156         /* shutdown hardware */
1157         saa_writel(SAA7134_IRQ1,0);
1158         saa_writel(SAA7134_IRQ2,0);
1159         saa_writel(SAA7134_MAIN_CTRL,0);
1160
1161         /* shutdown subsystems */
1162         saa7134_hwfini(dev);
1163
1164         /* unregister */
1165         mutex_lock(&saa7134_devlist_lock);
1166         list_del(&dev->devlist);
1167         list_for_each_entry(mops, &mops_list, next)
1168                 mpeg_ops_detach(mops, dev);
1169         mutex_unlock(&saa7134_devlist_lock);
1170         saa7134_devcount--;
1171
1172         saa7134_i2c_unregister(dev);
1173         saa7134_unregister_video(dev);
1174
1175
1176         /* the DMA sound modules should be unloaded before reaching
1177            this, but just in case they are still present... */
1178         if (dev->dmasound.priv_data != NULL) {
1179                 free_irq(pci_dev->irq, &dev->dmasound);
1180                 dev->dmasound.priv_data = NULL;
1181         }
1182
1183
1184         /* release resources */
1185         free_irq(pci_dev->irq, dev);
1186         vb2_dma_sg_cleanup_ctx(dev->alloc_ctx);
1187         iounmap(dev->lmmio);
1188         release_mem_region(pci_resource_start(pci_dev,0),
1189                            pci_resource_len(pci_dev,0));
1190
1191
1192         v4l2_device_unregister(&dev->v4l2_dev);
1193
1194         /* free memory */
1195         kfree(dev);
1196 }
1197
1198 #ifdef CONFIG_PM
1199
1200 /* resends a current buffer in queue after resume */
1201 static int saa7134_buffer_requeue(struct saa7134_dev *dev,
1202                                   struct saa7134_dmaqueue *q)
1203 {
1204         struct saa7134_buf *buf, *next;
1205
1206         assert_spin_locked(&dev->slock);
1207
1208         buf  = q->curr;
1209         next = buf;
1210         core_dbg("buffer_requeue\n");
1211
1212         if (!buf)
1213                 return 0;
1214
1215         core_dbg("buffer_requeue : resending active buffer\n");
1216
1217         if (!list_empty(&q->queue))
1218                 next = list_entry(q->queue.next, struct saa7134_buf,
1219                                           entry);
1220         buf->activate(dev, buf, next);
1221
1222         return 0;
1223 }
1224
1225 static int saa7134_suspend(struct pci_dev *pci_dev , pm_message_t state)
1226 {
1227         struct v4l2_device *v4l2_dev = pci_get_drvdata(pci_dev);
1228         struct saa7134_dev *dev = container_of(v4l2_dev, struct saa7134_dev, v4l2_dev);
1229
1230         /* disable overlay - apps should enable it explicitly on resume*/
1231         dev->ovenable = 0;
1232
1233         /* Disable interrupts, DMA, and rest of the chip*/
1234         saa_writel(SAA7134_IRQ1, 0);
1235         saa_writel(SAA7134_IRQ2, 0);
1236         saa_writel(SAA7134_MAIN_CTRL, 0);
1237
1238         dev->insuspend = 1;
1239         synchronize_irq(pci_dev->irq);
1240
1241         /* ACK interrupts once more, just in case,
1242                 since the IRQ handler won't ack them anymore*/
1243
1244         saa_writel(SAA7134_IRQ_REPORT, saa_readl(SAA7134_IRQ_REPORT));
1245
1246         /* Disable timeout timers - if we have active buffers, we will
1247            fill them on resume*/
1248
1249         del_timer(&dev->video_q.timeout);
1250         del_timer(&dev->vbi_q.timeout);
1251         del_timer(&dev->ts_q.timeout);
1252
1253         if (dev->remote)
1254                 saa7134_ir_stop(dev);
1255
1256         pci_save_state(pci_dev);
1257         pci_set_power_state(pci_dev, pci_choose_state(pci_dev, state));
1258
1259         return 0;
1260 }
1261
1262 static int saa7134_resume(struct pci_dev *pci_dev)
1263 {
1264         struct v4l2_device *v4l2_dev = pci_get_drvdata(pci_dev);
1265         struct saa7134_dev *dev = container_of(v4l2_dev, struct saa7134_dev, v4l2_dev);
1266         unsigned long flags;
1267
1268         pci_set_power_state(pci_dev, PCI_D0);
1269         pci_restore_state(pci_dev);
1270
1271         /* Do things that are done in saa7134_initdev ,
1272                 except of initializing memory structures.*/
1273
1274         saa7134_board_init1(dev);
1275
1276         /* saa7134_hwinit1 */
1277         if (saa7134_boards[dev->board].video_out)
1278                 saa7134_videoport_init(dev);
1279         if (card_has_mpeg(dev))
1280                 saa7134_ts_init_hw(dev);
1281         if (dev->remote)
1282                 saa7134_ir_start(dev);
1283         saa7134_hw_enable1(dev);
1284
1285         msleep(100);
1286
1287         saa7134_board_init2(dev);
1288
1289         /*saa7134_hwinit2*/
1290         saa7134_set_tvnorm_hw(dev);
1291         saa7134_tvaudio_setmute(dev);
1292         saa7134_tvaudio_setvolume(dev, dev->ctl_volume);
1293         saa7134_tvaudio_init(dev);
1294         saa7134_enable_i2s(dev);
1295         saa7134_hw_enable2(dev);
1296
1297         saa7134_irq_video_signalchange(dev);
1298
1299         /*resume unfinished buffer(s)*/
1300         spin_lock_irqsave(&dev->slock, flags);
1301         saa7134_buffer_requeue(dev, &dev->video_q);
1302         saa7134_buffer_requeue(dev, &dev->vbi_q);
1303         saa7134_buffer_requeue(dev, &dev->ts_q);
1304
1305         /* FIXME: Disable DMA audio sound - temporary till proper support
1306                   is implemented*/
1307
1308         dev->dmasound.dma_running = 0;
1309
1310         /* start DMA now*/
1311         dev->insuspend = 0;
1312         smp_wmb();
1313         saa7134_set_dmabits(dev);
1314         spin_unlock_irqrestore(&dev->slock, flags);
1315
1316         return 0;
1317 }
1318 #endif
1319
1320 /* ----------------------------------------------------------- */
1321
1322 int saa7134_ts_register(struct saa7134_mpeg_ops *ops)
1323 {
1324         struct saa7134_dev *dev;
1325
1326         mutex_lock(&saa7134_devlist_lock);
1327         list_for_each_entry(dev, &saa7134_devlist, devlist)
1328                 mpeg_ops_attach(ops, dev);
1329         list_add_tail(&ops->next,&mops_list);
1330         mutex_unlock(&saa7134_devlist_lock);
1331         return 0;
1332 }
1333
1334 void saa7134_ts_unregister(struct saa7134_mpeg_ops *ops)
1335 {
1336         struct saa7134_dev *dev;
1337
1338         mutex_lock(&saa7134_devlist_lock);
1339         list_del(&ops->next);
1340         list_for_each_entry(dev, &saa7134_devlist, devlist)
1341                 mpeg_ops_detach(ops, dev);
1342         mutex_unlock(&saa7134_devlist_lock);
1343 }
1344
1345 EXPORT_SYMBOL(saa7134_ts_register);
1346 EXPORT_SYMBOL(saa7134_ts_unregister);
1347
1348 /* ----------------------------------------------------------- */
1349
1350 static struct pci_driver saa7134_pci_driver = {
1351         .name     = "saa7134",
1352         .id_table = saa7134_pci_tbl,
1353         .probe    = saa7134_initdev,
1354         .remove   = saa7134_finidev,
1355 #ifdef CONFIG_PM
1356         .suspend  = saa7134_suspend,
1357         .resume   = saa7134_resume
1358 #endif
1359 };
1360
1361 static int __init saa7134_init(void)
1362 {
1363         INIT_LIST_HEAD(&saa7134_devlist);
1364         pr_info("saa7130/34: v4l2 driver version %s loaded\n",
1365                SAA7134_VERSION);
1366         return pci_register_driver(&saa7134_pci_driver);
1367 }
1368
1369 static void __exit saa7134_fini(void)
1370 {
1371         pci_unregister_driver(&saa7134_pci_driver);
1372 }
1373
1374 module_init(saa7134_init);
1375 module_exit(saa7134_fini);
1376
1377 /* ----------------------------------------------------------- */
1378
1379 EXPORT_SYMBOL(saa7134_set_gpio);
1380 EXPORT_SYMBOL(saa7134_boards);
1381
1382 /* ----------------- for the DMA sound modules --------------- */
1383
1384 EXPORT_SYMBOL(saa7134_dmasound_init);
1385 EXPORT_SYMBOL(saa7134_dmasound_exit);
1386 EXPORT_SYMBOL(saa7134_pgtable_free);
1387 EXPORT_SYMBOL(saa7134_pgtable_build);
1388 EXPORT_SYMBOL(saa7134_pgtable_alloc);
1389 EXPORT_SYMBOL(saa7134_set_dmabits);