[PATCH] Last DMA_xBIT_MASK cleanups
[linux-2.6.git] / drivers / media / video / saa7134 / saa7134-core.c
1 /*
2  *
3  * device driver for philips saa7134 based TV cards
4  * driver core
5  *
6  * (c) 2001-03 Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]
7  *
8  *  This program is free software; you can redistribute it and/or modify
9  *  it under the terms of the GNU General Public License as published by
10  *  the Free Software Foundation; either version 2 of the License, or
11  *  (at your option) any later version.
12  *
13  *  This program is distributed in the hope that it will be useful,
14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16  *  GNU General Public License for more details.
17  *
18  *  You should have received a copy of the GNU General Public License
19  *  along with this program; if not, write to the Free Software
20  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21  */
22
23 #include <linux/config.h>
24 #include <linux/init.h>
25 #include <linux/list.h>
26 #include <linux/module.h>
27 #include <linux/moduleparam.h>
28 #include <linux/kernel.h>
29 #include <linux/slab.h>
30 #include <linux/kmod.h>
31 #include <linux/sound.h>
32 #include <linux/interrupt.h>
33 #include <linux/delay.h>
34 #include <linux/mutex.h>
35 #include <linux/dma-mapping.h>
36
37 #include "saa7134-reg.h"
38 #include "saa7134.h"
39
40 MODULE_DESCRIPTION("v4l2 driver module for saa7130/34 based TV cards");
41 MODULE_AUTHOR("Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]");
42 MODULE_LICENSE("GPL");
43
44 /* ------------------------------------------------------------------ */
45
46 static unsigned int irq_debug = 0;
47 module_param(irq_debug, int, 0644);
48 MODULE_PARM_DESC(irq_debug,"enable debug messages [IRQ handler]");
49
50 static unsigned int core_debug = 0;
51 module_param(core_debug, int, 0644);
52 MODULE_PARM_DESC(core_debug,"enable debug messages [core]");
53
54 static unsigned int gpio_tracking = 0;
55 module_param(gpio_tracking, int, 0644);
56 MODULE_PARM_DESC(gpio_tracking,"enable debug messages [gpio]");
57
58 static unsigned int alsa = 0;
59 module_param(alsa, int, 0644);
60 MODULE_PARM_DESC(alsa,"enable ALSA DMA sound [dmasound]");
61
62 static unsigned int oss = 0;
63 module_param(oss, int, 0644);
64 MODULE_PARM_DESC(oss,"enable OSS DMA sound [dmasound]");
65
66 static unsigned int latency = UNSET;
67 module_param(latency, int, 0444);
68 MODULE_PARM_DESC(latency,"pci latency timer");
69
70 int saa7134_no_overlay=-1;
71 module_param_named(no_overlay, saa7134_no_overlay, int, 0444);
72 MODULE_PARM_DESC(no_overlay,"allow override overlay default (0 disables, 1 enables)"
73                 " [some VIA/SIS chipsets are known to have problem with overlay]");
74
75 static unsigned int video_nr[] = {[0 ... (SAA7134_MAXBOARDS - 1)] = UNSET };
76 static unsigned int vbi_nr[]   = {[0 ... (SAA7134_MAXBOARDS - 1)] = UNSET };
77 static unsigned int radio_nr[] = {[0 ... (SAA7134_MAXBOARDS - 1)] = UNSET };
78 static unsigned int tuner[]    = {[0 ... (SAA7134_MAXBOARDS - 1)] = UNSET };
79 static unsigned int card[]     = {[0 ... (SAA7134_MAXBOARDS - 1)] = UNSET };
80
81
82 module_param_array(video_nr, int, NULL, 0444);
83 module_param_array(vbi_nr,   int, NULL, 0444);
84 module_param_array(radio_nr, int, NULL, 0444);
85 module_param_array(tuner,    int, NULL, 0444);
86 module_param_array(card,     int, NULL, 0444);
87
88 MODULE_PARM_DESC(video_nr, "video device number");
89 MODULE_PARM_DESC(vbi_nr,   "vbi device number");
90 MODULE_PARM_DESC(radio_nr, "radio device number");
91 MODULE_PARM_DESC(tuner,    "tuner type");
92 MODULE_PARM_DESC(card,     "card type");
93
94 static DEFINE_MUTEX(devlist_lock);
95 LIST_HEAD(saa7134_devlist);
96 static LIST_HEAD(mops_list);
97 static unsigned int saa7134_devcount;
98
99 int (*dmasound_init)(struct saa7134_dev *dev);
100 int (*dmasound_exit)(struct saa7134_dev *dev);
101
102 #define dprintk(fmt, arg...)    if (core_debug) \
103         printk(KERN_DEBUG "%s/core: " fmt, dev->name , ## arg)
104
105 void saa7134_track_gpio(struct saa7134_dev *dev, char *msg)
106 {
107         unsigned long mode,status;
108
109         if (!gpio_tracking)
110                 return;
111         /* rising SAA7134_GPIO_GPRESCAN reads the status */
112         saa_andorb(SAA7134_GPIO_GPMODE3,SAA7134_GPIO_GPRESCAN,0);
113         saa_andorb(SAA7134_GPIO_GPMODE3,SAA7134_GPIO_GPRESCAN,SAA7134_GPIO_GPRESCAN);
114         mode   = saa_readl(SAA7134_GPIO_GPMODE0   >> 2) & 0xfffffff;
115         status = saa_readl(SAA7134_GPIO_GPSTATUS0 >> 2) & 0xfffffff;
116         printk(KERN_DEBUG
117                "%s: gpio: mode=0x%07lx in=0x%07lx out=0x%07lx [%s]\n",
118                dev->name, mode, (~mode) & status, mode & status, msg);
119 }
120
121 /* ------------------------------------------------------------------ */
122
123
124 /* ----------------------------------------------------------- */
125 /* delayed request_module                                      */
126
127 #if defined(CONFIG_MODULES) && defined(MODULE)
128 static int need_empress;
129 static int need_dvb;
130 static int need_alsa;
131 static int need_oss;
132
133 static int pending_call(struct notifier_block *self, unsigned long state,
134                         void *module)
135 {
136         if (module != THIS_MODULE || state != MODULE_STATE_LIVE)
137                 return NOTIFY_DONE;
138
139         if (need_empress)
140                 request_module("saa7134-empress");
141         if (need_dvb)
142                 request_module("saa7134-dvb");
143         if (need_alsa)
144                 request_module("saa7134-alsa");
145         if (need_oss)
146                 request_module("saa7134-oss");
147         return NOTIFY_DONE;
148 }
149
150 static int pending_registered;
151 static struct notifier_block pending_notifier = {
152         .notifier_call = pending_call,
153 };
154
155 static void request_module_depend(char *name, int *flag)
156 {
157         int err;
158         switch (THIS_MODULE->state) {
159         case MODULE_STATE_COMING:
160                 if (!pending_registered) {
161                         err = register_module_notifier(&pending_notifier);
162                         pending_registered = 1;
163                 }
164                 *flag = 1;
165                 break;
166         case MODULE_STATE_LIVE:
167                 request_module(name);
168                 break;
169         default:
170                 /* nothing */;
171                 break;
172         }
173 }
174
175 #else
176 #define request_module_depend(name,flag)
177 #endif /* CONFIG_MODULES */
178
179 /* ------------------------------------------------------------------ */
180
181 /* nr of (saa7134-)pages for the given buffer size */
182 static int saa7134_buffer_pages(int size)
183 {
184         size  = PAGE_ALIGN(size);
185         size += PAGE_SIZE; /* for non-page-aligned buffers */
186         size /= 4096;
187         return size;
188 }
189
190 /* calc max # of buffers from size (must not exceed the 4MB virtual
191  * address space per DMA channel) */
192 int saa7134_buffer_count(unsigned int size, unsigned int count)
193 {
194         unsigned int maxcount;
195
196         maxcount = 1024 / saa7134_buffer_pages(size);
197         if (count > maxcount)
198                 count = maxcount;
199         return count;
200 }
201
202 int saa7134_buffer_startpage(struct saa7134_buf *buf)
203 {
204         return saa7134_buffer_pages(buf->vb.bsize) * buf->vb.i;
205 }
206
207 unsigned long saa7134_buffer_base(struct saa7134_buf *buf)
208 {
209         unsigned long base;
210
211         base  = saa7134_buffer_startpage(buf) * 4096;
212         base += buf->vb.dma.sglist[0].offset;
213         return base;
214 }
215
216 /* ------------------------------------------------------------------ */
217
218 int saa7134_pgtable_alloc(struct pci_dev *pci, struct saa7134_pgtable *pt)
219 {
220         __le32       *cpu;
221         dma_addr_t   dma_addr;
222
223         cpu = pci_alloc_consistent(pci, SAA7134_PGTABLE_SIZE, &dma_addr);
224         if (NULL == cpu)
225                 return -ENOMEM;
226         pt->size = SAA7134_PGTABLE_SIZE;
227         pt->cpu  = cpu;
228         pt->dma  = dma_addr;
229         return 0;
230 }
231
232 int saa7134_pgtable_build(struct pci_dev *pci, struct saa7134_pgtable *pt,
233                           struct scatterlist *list, unsigned int length,
234                           unsigned int startpage)
235 {
236         __le32        *ptr;
237         unsigned int  i,p;
238
239         BUG_ON(NULL == pt || NULL == pt->cpu);
240
241         ptr = pt->cpu + startpage;
242         for (i = 0; i < length; i++, list++)
243                 for (p = 0; p * 4096 < list->length; p++, ptr++)
244                         *ptr = cpu_to_le32(sg_dma_address(list) - list->offset);
245         return 0;
246 }
247
248 void saa7134_pgtable_free(struct pci_dev *pci, struct saa7134_pgtable *pt)
249 {
250         if (NULL == pt->cpu)
251                 return;
252         pci_free_consistent(pci, pt->size, pt->cpu, pt->dma);
253         pt->cpu = NULL;
254 }
255
256 /* ------------------------------------------------------------------ */
257
258 void saa7134_dma_free(struct videobuf_queue *q,struct saa7134_buf *buf)
259 {
260         BUG_ON(in_interrupt());
261
262         videobuf_waiton(&buf->vb,0,0);
263         videobuf_dma_unmap(q, &buf->vb.dma);
264         videobuf_dma_free(&buf->vb.dma);
265         buf->vb.state = STATE_NEEDS_INIT;
266 }
267
268 /* ------------------------------------------------------------------ */
269
270 int saa7134_buffer_queue(struct saa7134_dev *dev,
271                          struct saa7134_dmaqueue *q,
272                          struct saa7134_buf *buf)
273 {
274         struct saa7134_buf *next = NULL;
275
276         assert_spin_locked(&dev->slock);
277         dprintk("buffer_queue %p\n",buf);
278         if (NULL == q->curr) {
279                 if (!q->need_two) {
280                         q->curr = buf;
281                         buf->activate(dev,buf,NULL);
282                 } else if (list_empty(&q->queue)) {
283                         list_add_tail(&buf->vb.queue,&q->queue);
284                         buf->vb.state = STATE_QUEUED;
285                 } else {
286                         next = list_entry(q->queue.next,struct saa7134_buf,
287                                           vb.queue);
288                         q->curr = buf;
289                         buf->activate(dev,buf,next);
290                 }
291         } else {
292                 list_add_tail(&buf->vb.queue,&q->queue);
293                 buf->vb.state = STATE_QUEUED;
294         }
295         return 0;
296 }
297
298 void saa7134_buffer_finish(struct saa7134_dev *dev,
299                            struct saa7134_dmaqueue *q,
300                            unsigned int state)
301 {
302         assert_spin_locked(&dev->slock);
303         dprintk("buffer_finish %p\n",q->curr);
304
305         /* finish current buffer */
306         q->curr->vb.state = state;
307         do_gettimeofday(&q->curr->vb.ts);
308         wake_up(&q->curr->vb.done);
309         q->curr = NULL;
310 }
311
312 void saa7134_buffer_next(struct saa7134_dev *dev,
313                          struct saa7134_dmaqueue *q)
314 {
315         struct saa7134_buf *buf,*next = NULL;
316
317         assert_spin_locked(&dev->slock);
318         BUG_ON(NULL != q->curr);
319
320         if (!list_empty(&q->queue)) {
321                 /* activate next one from queue */
322                 buf = list_entry(q->queue.next,struct saa7134_buf,vb.queue);
323                 dprintk("buffer_next %p [prev=%p/next=%p]\n",
324                         buf,q->queue.prev,q->queue.next);
325                 list_del(&buf->vb.queue);
326                 if (!list_empty(&q->queue))
327                         next = list_entry(q->queue.next,struct saa7134_buf,
328                                           vb.queue);
329                 q->curr = buf;
330                 buf->activate(dev,buf,next);
331                 dprintk("buffer_next #2 prev=%p/next=%p\n",
332                         q->queue.prev,q->queue.next);
333         } else {
334                 /* nothing to do -- just stop DMA */
335                 dprintk("buffer_next %p\n",NULL);
336                 saa7134_set_dmabits(dev);
337                 del_timer(&q->timeout);
338         }
339 }
340
341 void saa7134_buffer_timeout(unsigned long data)
342 {
343         struct saa7134_dmaqueue *q = (struct saa7134_dmaqueue*)data;
344         struct saa7134_dev *dev = q->dev;
345         unsigned long flags;
346
347         spin_lock_irqsave(&dev->slock,flags);
348
349         /* try to reset the hardware (SWRST) */
350         saa_writeb(SAA7134_REGION_ENABLE, 0x00);
351         saa_writeb(SAA7134_REGION_ENABLE, 0x80);
352         saa_writeb(SAA7134_REGION_ENABLE, 0x00);
353
354         /* flag current buffer as failed,
355            try to start over with the next one. */
356         if (q->curr) {
357                 dprintk("timeout on %p\n",q->curr);
358                 saa7134_buffer_finish(dev,q,STATE_ERROR);
359         }
360         saa7134_buffer_next(dev,q);
361         spin_unlock_irqrestore(&dev->slock,flags);
362 }
363
364 /* ------------------------------------------------------------------ */
365
366 int saa7134_set_dmabits(struct saa7134_dev *dev)
367 {
368         u32 split, task=0, ctrl=0, irq=0;
369         enum v4l2_field cap = V4L2_FIELD_ANY;
370         enum v4l2_field ov  = V4L2_FIELD_ANY;
371
372         assert_spin_locked(&dev->slock);
373
374         /* video capture -- dma 0 + video task A */
375         if (dev->video_q.curr) {
376                 task |= 0x01;
377                 ctrl |= SAA7134_MAIN_CTRL_TE0;
378                 irq  |= SAA7134_IRQ1_INTE_RA0_1 |
379                         SAA7134_IRQ1_INTE_RA0_0;
380                 cap = dev->video_q.curr->vb.field;
381         }
382
383         /* video capture -- dma 1+2 (planar modes) */
384         if (dev->video_q.curr &&
385             dev->video_q.curr->fmt->planar) {
386                 ctrl |= SAA7134_MAIN_CTRL_TE4 |
387                         SAA7134_MAIN_CTRL_TE5;
388         }
389
390         /* screen overlay -- dma 0 + video task B */
391         if (dev->ovenable) {
392                 task |= 0x10;
393                 ctrl |= SAA7134_MAIN_CTRL_TE1;
394                 ov = dev->ovfield;
395         }
396
397         /* vbi capture -- dma 0 + vbi task A+B */
398         if (dev->vbi_q.curr) {
399                 task |= 0x22;
400                 ctrl |= SAA7134_MAIN_CTRL_TE2 |
401                         SAA7134_MAIN_CTRL_TE3;
402                 irq  |= SAA7134_IRQ1_INTE_RA0_7 |
403                         SAA7134_IRQ1_INTE_RA0_6 |
404                         SAA7134_IRQ1_INTE_RA0_5 |
405                         SAA7134_IRQ1_INTE_RA0_4;
406         }
407
408         /* audio capture -- dma 3 */
409         if (dev->dmasound.dma_running) {
410                 ctrl |= SAA7134_MAIN_CTRL_TE6;
411                 irq  |= SAA7134_IRQ1_INTE_RA3_1 |
412                         SAA7134_IRQ1_INTE_RA3_0;
413         }
414
415         /* TS capture -- dma 5 */
416         if (dev->ts_q.curr) {
417                 ctrl |= SAA7134_MAIN_CTRL_TE5;
418                 irq  |= SAA7134_IRQ1_INTE_RA2_3 |
419                         SAA7134_IRQ1_INTE_RA2_2 |
420                         SAA7134_IRQ1_INTE_RA2_1 |
421                         SAA7134_IRQ1_INTE_RA2_0;
422         }
423
424         /* set task conditions + field handling */
425         if (V4L2_FIELD_HAS_BOTH(cap) || V4L2_FIELD_HAS_BOTH(ov) || cap == ov) {
426                 /* default config -- use full frames */
427                 saa_writeb(SAA7134_TASK_CONDITIONS(TASK_A), 0x0d);
428                 saa_writeb(SAA7134_TASK_CONDITIONS(TASK_B), 0x0d);
429                 saa_writeb(SAA7134_FIELD_HANDLING(TASK_A),  0x02);
430                 saa_writeb(SAA7134_FIELD_HANDLING(TASK_B),  0x02);
431                 split = 0;
432         } else {
433                 /* split fields between tasks */
434                 if (V4L2_FIELD_TOP == cap) {
435                         /* odd A, even B, repeat */
436                         saa_writeb(SAA7134_TASK_CONDITIONS(TASK_A), 0x0d);
437                         saa_writeb(SAA7134_TASK_CONDITIONS(TASK_B), 0x0e);
438                 } else {
439                         /* odd B, even A, repeat */
440                         saa_writeb(SAA7134_TASK_CONDITIONS(TASK_A), 0x0e);
441                         saa_writeb(SAA7134_TASK_CONDITIONS(TASK_B), 0x0d);
442                 }
443                 saa_writeb(SAA7134_FIELD_HANDLING(TASK_A),  0x01);
444                 saa_writeb(SAA7134_FIELD_HANDLING(TASK_B),  0x01);
445                 split = 1;
446         }
447
448         /* irqs */
449         saa_writeb(SAA7134_REGION_ENABLE, task);
450         saa_writel(SAA7134_IRQ1,          irq);
451         saa_andorl(SAA7134_MAIN_CTRL,
452                    SAA7134_MAIN_CTRL_TE0 |
453                    SAA7134_MAIN_CTRL_TE1 |
454                    SAA7134_MAIN_CTRL_TE2 |
455                    SAA7134_MAIN_CTRL_TE3 |
456                    SAA7134_MAIN_CTRL_TE4 |
457                    SAA7134_MAIN_CTRL_TE5 |
458                    SAA7134_MAIN_CTRL_TE6,
459                    ctrl);
460         dprintk("dmabits: task=0x%02x ctrl=0x%02x irq=0x%x split=%s\n",
461                 task, ctrl, irq, split ? "no" : "yes");
462
463         return 0;
464 }
465
466 /* ------------------------------------------------------------------ */
467 /* IRQ handler + helpers                                              */
468
469 static char *irqbits[] = {
470         "DONE_RA0", "DONE_RA1", "DONE_RA2", "DONE_RA3",
471         "AR", "PE", "PWR_ON", "RDCAP", "INTL", "FIDT", "MMC",
472         "TRIG_ERR", "CONF_ERR", "LOAD_ERR",
473         "GPIO16?", "GPIO18", "GPIO22", "GPIO23"
474 };
475 #define IRQBITS ARRAY_SIZE(irqbits)
476
477 static void print_irqstatus(struct saa7134_dev *dev, int loop,
478                             unsigned long report, unsigned long status)
479 {
480         unsigned int i;
481
482         printk(KERN_DEBUG "%s/irq[%d,%ld]: r=0x%lx s=0x%02lx",
483                dev->name,loop,jiffies,report,status);
484         for (i = 0; i < IRQBITS; i++) {
485                 if (!(report & (1 << i)))
486                         continue;
487                 printk(" %s",irqbits[i]);
488         }
489         if (report & SAA7134_IRQ_REPORT_DONE_RA0) {
490                 printk(" | RA0=%s,%s,%s,%ld",
491                        (status & 0x40) ? "vbi"  : "video",
492                        (status & 0x20) ? "b"    : "a",
493                        (status & 0x10) ? "odd"  : "even",
494                        (status & 0x0f));
495         }
496         printk("\n");
497 }
498
499 static irqreturn_t saa7134_irq(int irq, void *dev_id, struct pt_regs *regs)
500 {
501         struct saa7134_dev *dev = (struct saa7134_dev*) dev_id;
502         unsigned long report,status;
503         int loop, handled = 0;
504
505         for (loop = 0; loop < 10; loop++) {
506                 report = saa_readl(SAA7134_IRQ_REPORT);
507                 status = saa_readl(SAA7134_IRQ_STATUS);
508                 if (0 == report) {
509                         if (irq_debug > 1)
510                                 printk(KERN_DEBUG "%s/irq: no (more) work\n",
511                                        dev->name);
512                         goto out;
513                 }
514
515                 /* If dmasound support is active and we get a sound report, exit
516                    and let the saa7134-alsa/oss module deal with it */
517
518                 if ((report & SAA7134_IRQ_REPORT_DONE_RA3) &&
519                         (dev->dmasound.priv_data != NULL) )
520                 {
521                         if (irq_debug > 1)
522                                 printk(KERN_DEBUG "%s/irq: ignoring interrupt for DMA sound\n",
523                                        dev->name);
524                         goto out;
525                 }
526
527                 handled = 1;
528                 saa_writel(SAA7134_IRQ_REPORT,report);
529                 if (irq_debug)
530                         print_irqstatus(dev,loop,report,status);
531
532
533                 if (report & SAA7134_IRQ_REPORT_RDCAP /* _INTL */)
534                         saa7134_irq_video_intl(dev);
535
536                 if ((report & SAA7134_IRQ_REPORT_DONE_RA0) &&
537                     (status & 0x60) == 0)
538                         saa7134_irq_video_done(dev,status);
539
540                 if ((report & SAA7134_IRQ_REPORT_DONE_RA0) &&
541                     (status & 0x40) == 0x40)
542                         saa7134_irq_vbi_done(dev,status);
543
544                 if ((report & SAA7134_IRQ_REPORT_DONE_RA2) &&
545                     card_has_mpeg(dev))
546                         saa7134_irq_ts_done(dev,status);
547
548                 if (report & SAA7134_IRQ_REPORT_GPIO16) {
549                         switch (dev->has_remote) {
550                                 case SAA7134_REMOTE_GPIO:
551                                         if  (dev->remote->mask_keydown & 0x10000) {
552                                                 saa7134_input_irq(dev);
553                                         }
554                                         break;
555
556                                 case SAA7134_REMOTE_I2C:
557                                         break;                  /* FIXME: invoke I2C get_key() */
558
559                                 default:                        /* GPIO16 not used by IR remote */
560                                         break;
561                         }
562                 }
563
564                 if (report & SAA7134_IRQ_REPORT_GPIO18) {
565                         switch (dev->has_remote) {
566                                 case SAA7134_REMOTE_GPIO:
567                                         if ((dev->remote->mask_keydown & 0x40000) ||
568                                             (dev->remote->mask_keyup & 0x40000)) {
569                                                 saa7134_input_irq(dev);
570                                         }
571                                         break;
572
573                                 case SAA7134_REMOTE_I2C:
574                                         break;                  /* FIXME: invoke I2C get_key() */
575
576                                 default:                        /* GPIO18 not used by IR remote */
577                                         break;
578                         }
579                 }
580         }
581
582         if (10 == loop) {
583                 print_irqstatus(dev,loop,report,status);
584                 if (report & SAA7134_IRQ_REPORT_PE) {
585                         /* disable all parity error */
586                         printk(KERN_WARNING "%s/irq: looping -- "
587                                "clearing PE (parity error!) enable bit\n",dev->name);
588                         saa_clearl(SAA7134_IRQ2,SAA7134_IRQ2_INTE_PE);
589                 } else if (report & SAA7134_IRQ_REPORT_GPIO16) {
590                         /* disable gpio16 IRQ */
591                         printk(KERN_WARNING "%s/irq: looping -- "
592                                "clearing GPIO16 enable bit\n",dev->name);
593                         saa_clearl(SAA7134_IRQ2, SAA7134_IRQ2_INTE_GPIO16);
594                 } else if (report & SAA7134_IRQ_REPORT_GPIO18) {
595                         /* disable gpio18 IRQs */
596                         printk(KERN_WARNING "%s/irq: looping -- "
597                                "clearing GPIO18 enable bit\n",dev->name);
598                         saa_clearl(SAA7134_IRQ2, SAA7134_IRQ2_INTE_GPIO18);
599                 } else {
600                         /* disable all irqs */
601                         printk(KERN_WARNING "%s/irq: looping -- "
602                                "clearing all enable bits\n",dev->name);
603                         saa_writel(SAA7134_IRQ1,0);
604                         saa_writel(SAA7134_IRQ2,0);
605                 }
606         }
607
608  out:
609         return IRQ_RETVAL(handled);
610 }
611
612 /* ------------------------------------------------------------------ */
613
614 /* early init (no i2c, no irq) */
615 static int saa7134_hwinit1(struct saa7134_dev *dev)
616 {
617         dprintk("hwinit1\n");
618
619         saa_writel(SAA7134_IRQ1, 0);
620         saa_writel(SAA7134_IRQ2, 0);
621         mutex_init(&dev->lock);
622         spin_lock_init(&dev->slock);
623
624         saa7134_track_gpio(dev,"pre-init");
625         saa7134_video_init1(dev);
626         saa7134_vbi_init1(dev);
627         if (card_has_mpeg(dev))
628                 saa7134_ts_init1(dev);
629         saa7134_input_init1(dev);
630
631         /* RAM FIFO config */
632         saa_writel(SAA7134_FIFO_SIZE, 0x08070503);
633         saa_writel(SAA7134_THRESHOULD,0x02020202);
634
635         /* enable audio + video processing */
636         saa_writel(SAA7134_MAIN_CTRL,
637                    SAA7134_MAIN_CTRL_VPLLE |
638                    SAA7134_MAIN_CTRL_APLLE |
639                    SAA7134_MAIN_CTRL_EXOSC |
640                    SAA7134_MAIN_CTRL_EVFE1 |
641                    SAA7134_MAIN_CTRL_EVFE2 |
642                    SAA7134_MAIN_CTRL_ESFE  |
643                    SAA7134_MAIN_CTRL_EBDAC);
644
645         /*
646          * Initialize OSS _after_ enabling audio clock PLL and audio processing.
647          * OSS initialization writes to registers via the audio DSP; these
648          * writes will fail unless the audio clock has been started.  At worst,
649          * audio will not work.
650          */
651
652         /* enable peripheral devices */
653         saa_writeb(SAA7134_SPECIAL_MODE, 0x01);
654
655         /* set vertical line numbering start (vbi needs this) */
656         saa_writeb(SAA7134_SOURCE_TIMING2, 0x20);
657
658         return 0;
659 }
660
661 /* late init (with i2c + irq) */
662 static int saa7134_hwinit2(struct saa7134_dev *dev)
663 {
664         unsigned int irq2_mask;
665         dprintk("hwinit2\n");
666
667         saa7134_video_init2(dev);
668         saa7134_tvaudio_init2(dev);
669
670         /* enable IRQ's */
671         irq2_mask =
672                 SAA7134_IRQ2_INTE_DEC3    |
673                 SAA7134_IRQ2_INTE_DEC2    |
674                 SAA7134_IRQ2_INTE_DEC1    |
675                 SAA7134_IRQ2_INTE_DEC0    |
676                 SAA7134_IRQ2_INTE_PE      |
677                 SAA7134_IRQ2_INTE_AR;
678
679         if (dev->has_remote == SAA7134_REMOTE_GPIO) {
680                 if (dev->remote->mask_keydown & 0x10000)
681                         irq2_mask |= SAA7134_IRQ2_INTE_GPIO16;
682                 else if (dev->remote->mask_keydown & 0x40000)
683                         irq2_mask |= SAA7134_IRQ2_INTE_GPIO18;
684                 else if (dev->remote->mask_keyup & 0x40000)
685                         irq2_mask |= SAA7134_IRQ2_INTE_GPIO18A;
686         }
687
688         saa_writel(SAA7134_IRQ1, 0);
689         saa_writel(SAA7134_IRQ2, irq2_mask);
690
691         return 0;
692 }
693
694 /* shutdown */
695 static int saa7134_hwfini(struct saa7134_dev *dev)
696 {
697         dprintk("hwfini\n");
698
699         if (card_has_mpeg(dev))
700                 saa7134_ts_fini(dev);
701         saa7134_input_fini(dev);
702         saa7134_vbi_fini(dev);
703         saa7134_video_fini(dev);
704         saa7134_tvaudio_fini(dev);
705         return 0;
706 }
707
708 static void __devinit must_configure_manually(void)
709 {
710         unsigned int i,p;
711
712         printk(KERN_WARNING
713                "saa7134: <rant>\n"
714                "saa7134:  Congratulations!  Your TV card vendor saved a few\n"
715                "saa7134:  cents for a eeprom, thus your pci board has no\n"
716                "saa7134:  subsystem ID and I can't identify it automatically\n"
717                "saa7134: </rant>\n"
718                "saa7134: I feel better now.  Ok, here are the good news:\n"
719                "saa7134: You can use the card=<nr> insmod option to specify\n"
720                "saa7134: which board do you have.  The list:\n");
721         for (i = 0; i < saa7134_bcount; i++) {
722                 printk(KERN_WARNING "saa7134:   card=%d -> %-40.40s",
723                        i,saa7134_boards[i].name);
724                 for (p = 0; saa7134_pci_tbl[p].driver_data; p++) {
725                         if (saa7134_pci_tbl[p].driver_data != i)
726                                 continue;
727                         printk(" %04x:%04x",
728                                saa7134_pci_tbl[p].subvendor,
729                                saa7134_pci_tbl[p].subdevice);
730                 }
731                 printk("\n");
732         }
733 }
734
735 static struct video_device *vdev_init(struct saa7134_dev *dev,
736                                       struct video_device *template,
737                                       char *type)
738 {
739         struct video_device *vfd;
740
741         vfd = video_device_alloc();
742         if (NULL == vfd)
743                 return NULL;
744         *vfd = *template;
745         vfd->minor   = -1;
746         vfd->dev     = &dev->pci->dev;
747         vfd->release = video_device_release;
748         snprintf(vfd->name, sizeof(vfd->name), "%s %s (%s)",
749                  dev->name, type, saa7134_boards[dev->board].name);
750         return vfd;
751 }
752
753 static void saa7134_unregister_video(struct saa7134_dev *dev)
754 {
755         if (dev->video_dev) {
756                 if (-1 != dev->video_dev->minor)
757                         video_unregister_device(dev->video_dev);
758                 else
759                         video_device_release(dev->video_dev);
760                 dev->video_dev = NULL;
761         }
762         if (dev->vbi_dev) {
763                 if (-1 != dev->vbi_dev->minor)
764                         video_unregister_device(dev->vbi_dev);
765                 else
766                         video_device_release(dev->vbi_dev);
767                 dev->vbi_dev = NULL;
768         }
769         if (dev->radio_dev) {
770                 if (-1 != dev->radio_dev->minor)
771                         video_unregister_device(dev->radio_dev);
772                 else
773                         video_device_release(dev->radio_dev);
774                 dev->radio_dev = NULL;
775         }
776 }
777
778 static void mpeg_ops_attach(struct saa7134_mpeg_ops *ops,
779                             struct saa7134_dev *dev)
780 {
781         int err;
782
783         if (NULL != dev->mops)
784                 return;
785         if (saa7134_boards[dev->board].mpeg != ops->type)
786                 return;
787         err = ops->init(dev);
788         if (0 != err)
789                 return;
790         dev->mops = ops;
791 }
792
793 static void mpeg_ops_detach(struct saa7134_mpeg_ops *ops,
794                             struct saa7134_dev *dev)
795 {
796         if (NULL == dev->mops)
797                 return;
798         if (dev->mops != ops)
799                 return;
800         dev->mops->fini(dev);
801         dev->mops = NULL;
802 }
803
804 static int __devinit saa7134_initdev(struct pci_dev *pci_dev,
805                                      const struct pci_device_id *pci_id)
806 {
807         struct saa7134_dev *dev;
808         struct list_head *item;
809         struct saa7134_mpeg_ops *mops;
810         int err;
811
812         dev = kzalloc(sizeof(*dev),GFP_KERNEL);
813         if (NULL == dev)
814                 return -ENOMEM;
815
816         /* pci init */
817         dev->pci = pci_dev;
818         if (pci_enable_device(pci_dev)) {
819                 err = -EIO;
820                 goto fail1;
821         }
822
823         dev->nr = saa7134_devcount;
824         sprintf(dev->name,"saa%x[%d]",pci_dev->device,dev->nr);
825
826         /* pci quirks */
827         if (pci_pci_problems) {
828                 if (pci_pci_problems & PCIPCI_TRITON)
829                         printk(KERN_INFO "%s: quirk: PCIPCI_TRITON\n", dev->name);
830                 if (pci_pci_problems & PCIPCI_NATOMA)
831                         printk(KERN_INFO "%s: quirk: PCIPCI_NATOMA\n", dev->name);
832                 if (pci_pci_problems & PCIPCI_VIAETBF)
833                         printk(KERN_INFO "%s: quirk: PCIPCI_VIAETBF\n", dev->name);
834                 if (pci_pci_problems & PCIPCI_VSFX)
835                         printk(KERN_INFO "%s: quirk: PCIPCI_VSFX\n",dev->name);
836 #ifdef PCIPCI_ALIMAGIK
837                 if (pci_pci_problems & PCIPCI_ALIMAGIK) {
838                         printk(KERN_INFO "%s: quirk: PCIPCI_ALIMAGIK -- latency fixup\n",
839                                dev->name);
840                         latency = 0x0A;
841                 }
842 #endif
843                 if (pci_pci_problems & PCIPCI_FAIL) {
844                         printk(KERN_INFO "%s: quirk: this driver and your "
845                                         "chipset may not work together"
846                                         " in overlay mode.\n",dev->name);
847                         if (!saa7134_no_overlay) {
848                                 printk(KERN_INFO "%s: quirk: overlay "
849                                                 "mode will be disabled.\n",
850                                                 dev->name);
851                                 saa7134_no_overlay = 1;
852                         } else {
853                                 printk(KERN_INFO "%s: quirk: overlay "
854                                                 "mode will be forced. Use this"
855                                                 " option at your own risk.\n",
856                                                 dev->name);
857                         }
858                 }
859         }
860         if (UNSET != latency) {
861                 printk(KERN_INFO "%s: setting pci latency timer to %d\n",
862                        dev->name,latency);
863                 pci_write_config_byte(pci_dev, PCI_LATENCY_TIMER, latency);
864         }
865
866         /* print pci info */
867         pci_read_config_byte(pci_dev, PCI_CLASS_REVISION, &dev->pci_rev);
868         pci_read_config_byte(pci_dev, PCI_LATENCY_TIMER,  &dev->pci_lat);
869         printk(KERN_INFO "%s: found at %s, rev: %d, irq: %d, "
870                "latency: %d, mmio: 0x%lx\n", dev->name,
871                pci_name(pci_dev), dev->pci_rev, pci_dev->irq,
872                dev->pci_lat,pci_resource_start(pci_dev,0));
873         pci_set_master(pci_dev);
874         if (!pci_dma_supported(pci_dev, DMA_32BIT_MASK)) {
875                 printk("%s: Oops: no 32bit PCI DMA ???\n",dev->name);
876                 err = -EIO;
877                 goto fail1;
878         }
879
880         /* board config */
881         dev->board = pci_id->driver_data;
882         if (card[dev->nr] >= 0 &&
883             card[dev->nr] < saa7134_bcount)
884                 dev->board = card[dev->nr];
885         if (SAA7134_BOARD_NOAUTO == dev->board) {
886                 must_configure_manually();
887                 dev->board = SAA7134_BOARD_UNKNOWN;
888         }
889         dev->tuner_type   = saa7134_boards[dev->board].tuner_type;
890         dev->tda9887_conf = saa7134_boards[dev->board].tda9887_conf;
891         if (UNSET != tuner[dev->nr])
892                 dev->tuner_type = tuner[dev->nr];
893         printk(KERN_INFO "%s: subsystem: %04x:%04x, board: %s [card=%d,%s]\n",
894                dev->name,pci_dev->subsystem_vendor,
895                pci_dev->subsystem_device,saa7134_boards[dev->board].name,
896                dev->board, card[dev->nr] == dev->board ?
897                "insmod option" : "autodetected");
898
899         /* get mmio */
900         if (!request_mem_region(pci_resource_start(pci_dev,0),
901                                 pci_resource_len(pci_dev,0),
902                                 dev->name)) {
903                 err = -EBUSY;
904                 printk(KERN_ERR "%s: can't get MMIO memory @ 0x%lx\n",
905                        dev->name,pci_resource_start(pci_dev,0));
906                 goto fail1;
907         }
908         dev->lmmio = ioremap(pci_resource_start(pci_dev,0), 0x1000);
909         dev->bmmio = (__u8 __iomem *)dev->lmmio;
910         if (NULL == dev->lmmio) {
911                 err = -EIO;
912                 printk(KERN_ERR "%s: can't ioremap() MMIO memory\n",
913                        dev->name);
914                 goto fail2;
915         }
916
917         /* initialize hardware #1 */
918         saa7134_board_init1(dev);
919         saa7134_hwinit1(dev);
920
921         /* get irq */
922         err = request_irq(pci_dev->irq, saa7134_irq,
923                           SA_SHIRQ | SA_INTERRUPT, dev->name, dev);
924         if (err < 0) {
925                 printk(KERN_ERR "%s: can't get IRQ %d\n",
926                        dev->name,pci_dev->irq);
927                 goto fail3;
928         }
929
930         /* wait a bit, register i2c bus */
931         msleep(100);
932         saa7134_i2c_register(dev);
933
934         /* initialize hardware #2 */
935         saa7134_board_init2(dev);
936         saa7134_hwinit2(dev);
937
938         /* load i2c helpers */
939         if (TUNER_ABSENT != dev->tuner_type)
940                 request_module("tuner");
941         if (dev->tda9887_conf)
942                 request_module("tda9887");
943         if (card_is_empress(dev)) {
944                 request_module("saa6752hs");
945                 request_module_depend("saa7134-empress",&need_empress);
946         }
947
948         if (card_is_dvb(dev))
949                 request_module_depend("saa7134-dvb",&need_dvb);
950
951
952         if (alsa)
953                 request_module_depend("saa7134-alsa",&need_alsa);
954
955         if (oss)
956                 request_module_depend("saa7134-oss",&need_oss);
957
958         v4l2_prio_init(&dev->prio);
959
960         /* register v4l devices */
961         if (saa7134_no_overlay <= 0) {
962                 saa7134_video_template.type |= VID_TYPE_OVERLAY;
963         } else {
964                 printk("%s: Overlay support disabled.\n",dev->name);
965         }
966         dev->video_dev = vdev_init(dev,&saa7134_video_template,"video");
967         err = video_register_device(dev->video_dev,VFL_TYPE_GRABBER,
968                                     video_nr[dev->nr]);
969         if (err < 0) {
970                 printk(KERN_INFO "%s: can't register video device\n",
971                        dev->name);
972                 goto fail4;
973         }
974         printk(KERN_INFO "%s: registered device video%d [v4l2]\n",
975                dev->name,dev->video_dev->minor & 0x1f);
976
977         dev->vbi_dev = vdev_init(dev,&saa7134_vbi_template,"vbi");
978         err = video_register_device(dev->vbi_dev,VFL_TYPE_VBI,
979                                     vbi_nr[dev->nr]);
980         if (err < 0)
981                 goto fail4;
982         printk(KERN_INFO "%s: registered device vbi%d\n",
983                dev->name,dev->vbi_dev->minor & 0x1f);
984
985         if (card_has_radio(dev)) {
986                 dev->radio_dev = vdev_init(dev,&saa7134_radio_template,"radio");
987                 err = video_register_device(dev->radio_dev,VFL_TYPE_RADIO,
988                                             radio_nr[dev->nr]);
989                 if (err < 0)
990                         goto fail4;
991                 printk(KERN_INFO "%s: registered device radio%d\n",
992                        dev->name,dev->radio_dev->minor & 0x1f);
993         }
994
995         /* everything worked */
996         pci_set_drvdata(pci_dev,dev);
997         saa7134_devcount++;
998
999         mutex_lock(&devlist_lock);
1000         list_for_each(item,&mops_list) {
1001                 mops = list_entry(item, struct saa7134_mpeg_ops, next);
1002                 mpeg_ops_attach(mops, dev);
1003         }
1004         list_add_tail(&dev->devlist,&saa7134_devlist);
1005         mutex_unlock(&devlist_lock);
1006
1007         /* check for signal */
1008         saa7134_irq_video_intl(dev);
1009
1010         if (dmasound_init && !dev->dmasound.priv_data) {
1011                 dmasound_init(dev);
1012         }
1013
1014         return 0;
1015
1016  fail4:
1017         saa7134_unregister_video(dev);
1018         saa7134_i2c_unregister(dev);
1019         free_irq(pci_dev->irq, dev);
1020  fail3:
1021         saa7134_hwfini(dev);
1022         iounmap(dev->lmmio);
1023  fail2:
1024         release_mem_region(pci_resource_start(pci_dev,0),
1025                            pci_resource_len(pci_dev,0));
1026  fail1:
1027         kfree(dev);
1028         return err;
1029 }
1030
1031 static void __devexit saa7134_finidev(struct pci_dev *pci_dev)
1032 {
1033         struct saa7134_dev *dev = pci_get_drvdata(pci_dev);
1034         struct list_head *item;
1035         struct saa7134_mpeg_ops *mops;
1036
1037         /* Release DMA sound modules if present */
1038         if (dmasound_exit && dev->dmasound.priv_data) {
1039                 dmasound_exit(dev);
1040         }
1041
1042         /* debugging ... */
1043         if (irq_debug) {
1044                 u32 report = saa_readl(SAA7134_IRQ_REPORT);
1045                 u32 status = saa_readl(SAA7134_IRQ_STATUS);
1046                 print_irqstatus(dev,42,report,status);
1047         }
1048
1049         /* disable peripheral devices */
1050         saa_writeb(SAA7134_SPECIAL_MODE,0);
1051
1052         /* shutdown hardware */
1053         saa_writel(SAA7134_IRQ1,0);
1054         saa_writel(SAA7134_IRQ2,0);
1055         saa_writel(SAA7134_MAIN_CTRL,0);
1056
1057         /* shutdown subsystems */
1058         saa7134_hwfini(dev);
1059
1060         /* unregister */
1061         mutex_lock(&devlist_lock);
1062         list_del(&dev->devlist);
1063         list_for_each(item,&mops_list) {
1064                 mops = list_entry(item, struct saa7134_mpeg_ops, next);
1065                 mpeg_ops_detach(mops, dev);
1066         }
1067         mutex_unlock(&devlist_lock);
1068         saa7134_devcount--;
1069
1070         saa7134_i2c_unregister(dev);
1071         saa7134_unregister_video(dev);
1072
1073
1074         /* the DMA sound modules should be unloaded before reaching
1075            this, but just in case they are still present... */
1076         if (dev->dmasound.priv_data != NULL) {
1077                 free_irq(pci_dev->irq, &dev->dmasound);
1078                 dev->dmasound.priv_data = NULL;
1079         }
1080
1081
1082         /* release resources */
1083         free_irq(pci_dev->irq, dev);
1084         iounmap(dev->lmmio);
1085         release_mem_region(pci_resource_start(pci_dev,0),
1086                            pci_resource_len(pci_dev,0));
1087
1088         pci_set_drvdata(pci_dev, NULL);
1089
1090         /* free memory */
1091         kfree(dev);
1092 }
1093
1094 /* ----------------------------------------------------------- */
1095
1096 int saa7134_ts_register(struct saa7134_mpeg_ops *ops)
1097 {
1098         struct list_head *item;
1099         struct saa7134_dev *dev;
1100
1101         mutex_lock(&devlist_lock);
1102         list_for_each(item,&saa7134_devlist) {
1103                 dev = list_entry(item, struct saa7134_dev, devlist);
1104                 mpeg_ops_attach(ops, dev);
1105         }
1106         list_add_tail(&ops->next,&mops_list);
1107         mutex_unlock(&devlist_lock);
1108         return 0;
1109 }
1110
1111 void saa7134_ts_unregister(struct saa7134_mpeg_ops *ops)
1112 {
1113         struct list_head *item;
1114         struct saa7134_dev *dev;
1115
1116         mutex_lock(&devlist_lock);
1117         list_del(&ops->next);
1118         list_for_each(item,&saa7134_devlist) {
1119                 dev = list_entry(item, struct saa7134_dev, devlist);
1120                 mpeg_ops_detach(ops, dev);
1121         }
1122         mutex_unlock(&devlist_lock);
1123 }
1124
1125 EXPORT_SYMBOL(saa7134_ts_register);
1126 EXPORT_SYMBOL(saa7134_ts_unregister);
1127
1128 /* ----------------------------------------------------------- */
1129
1130 static struct pci_driver saa7134_pci_driver = {
1131         .name     = "saa7134",
1132         .id_table = saa7134_pci_tbl,
1133         .probe    = saa7134_initdev,
1134         .remove   = __devexit_p(saa7134_finidev),
1135 };
1136
1137 static int saa7134_init(void)
1138 {
1139         INIT_LIST_HEAD(&saa7134_devlist);
1140         printk(KERN_INFO "saa7130/34: v4l2 driver version %d.%d.%d loaded\n",
1141                (SAA7134_VERSION_CODE >> 16) & 0xff,
1142                (SAA7134_VERSION_CODE >>  8) & 0xff,
1143                SAA7134_VERSION_CODE & 0xff);
1144 #ifdef SNAPSHOT
1145         printk(KERN_INFO "saa7130/34: snapshot date %04d-%02d-%02d\n",
1146                SNAPSHOT/10000, (SNAPSHOT/100)%100, SNAPSHOT%100);
1147 #endif
1148         return pci_register_driver(&saa7134_pci_driver);
1149 }
1150
1151 static void saa7134_fini(void)
1152 {
1153 #if defined(CONFIG_MODULES) && defined(MODULE)
1154         if (pending_registered)
1155                 unregister_module_notifier(&pending_notifier);
1156 #endif /* CONFIG_MODULES */
1157         pci_unregister_driver(&saa7134_pci_driver);
1158 }
1159
1160 module_init(saa7134_init);
1161 module_exit(saa7134_fini);
1162
1163 /* ----------------------------------------------------------- */
1164
1165 EXPORT_SYMBOL(saa7134_i2c_call_clients);
1166 EXPORT_SYMBOL(saa7134_devlist);
1167 EXPORT_SYMBOL(saa7134_boards);
1168
1169 /* ----------------- for the DMA sound modules --------------- */
1170
1171 EXPORT_SYMBOL(dmasound_init);
1172 EXPORT_SYMBOL(dmasound_exit);
1173 EXPORT_SYMBOL(saa7134_pgtable_free);
1174 EXPORT_SYMBOL(saa7134_pgtable_build);
1175 EXPORT_SYMBOL(saa7134_pgtable_alloc);
1176 EXPORT_SYMBOL(saa7134_set_dmabits);
1177
1178 /* ----------------------------------------------------------- */
1179 /*
1180  * Local variables:
1181  * c-basic-offset: 8
1182  * End:
1183  */