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Merge branch 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik...
[linux-2.6-block.git] / drivers / media / video / saa7134 / saa7134-core.c
CommitLineData
1da177e4 1/*
1da177e4
LT		 2 *
3 * device driver for philips saa7134 based TV cards
4 * driver core
5 *
6 * (c) 2001-03 Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21 */
22
23#include <linux/config.h>
24#include <linux/init.h>
25#include <linux/list.h>
26#include <linux/module.h>
27#include <linux/moduleparam.h>
28#include <linux/kernel.h>
29#include <linux/slab.h>
30#include <linux/kmod.h>
31#include <linux/sound.h>
32#include <linux/interrupt.h>
33#include <linux/delay.h>
34
35#include "saa7134-reg.h"
36#include "saa7134.h"
37
38MODULE_DESCRIPTION("v4l2 driver module for saa7130/34 based TV cards");
39MODULE_AUTHOR("Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]");
40MODULE_LICENSE("GPL");
41
42/* ------------------------------------------------------------------ */
43
44static unsigned int irq_debug = 0;
45module_param(irq_debug, int, 0644);
46MODULE_PARM_DESC(irq_debug,"enable debug messages [IRQ handler]");
47
48static unsigned int core_debug = 0;
49module_param(core_debug, int, 0644);
50MODULE_PARM_DESC(core_debug,"enable debug messages [core]");
51
52static unsigned int gpio_tracking = 0;
53module_param(gpio_tracking, int, 0644);
54MODULE_PARM_DESC(gpio_tracking,"enable debug messages [gpio]");
55
bd15eba3 56static unsigned int alsa = 0;
4aabf633
RC		 57module_param(alsa, int, 0644);
58MODULE_PARM_DESC(alsa,"enable ALSA DMA sound [dmasound]");
59
60static unsigned int oss = 0;
61module_param(oss, int, 0644);
62MODULE_PARM_DESC(oss,"enable OSS DMA sound [dmasound]");
bd15eba3 63
1da177e4
LT		 64static unsigned int latency = UNSET;
65module_param(latency, int, 0444);
66MODULE_PARM_DESC(latency,"pci latency timer");
67
68static unsigned int video_nr[] = {[0 ... (SAA7134_MAXBOARDS - 1)] = UNSET };
69static unsigned int vbi_nr[] = {[0 ... (SAA7134_MAXBOARDS - 1)] = UNSET };
70static unsigned int radio_nr[] = {[0 ... (SAA7134_MAXBOARDS - 1)] = UNSET };
1da177e4
LT		 71static unsigned int tuner[] = {[0 ... (SAA7134_MAXBOARDS - 1)] = UNSET };
72static unsigned int card[] = {[0 ... (SAA7134_MAXBOARDS - 1)] = UNSET };
73
674434c6 74
1da177e4
LT		 75module_param_array(video_nr, int, NULL, 0444);
76module_param_array(vbi_nr, int, NULL, 0444);
77module_param_array(radio_nr, int, NULL, 0444);
1da177e4
LT		 78module_param_array(tuner, int, NULL, 0444);
79module_param_array(card, int, NULL, 0444);
80
81MODULE_PARM_DESC(video_nr, "video device number");
82MODULE_PARM_DESC(vbi_nr, "vbi device number");
83MODULE_PARM_DESC(radio_nr, "radio device number");
1da177e4
LT		 84MODULE_PARM_DESC(tuner, "tuner type");
85MODULE_PARM_DESC(card, "card type");
86
87static DECLARE_MUTEX(devlist_lock);
88LIST_HEAD(saa7134_devlist);
89static LIST_HEAD(mops_list);
90static unsigned int saa7134_devcount;
91
f5b974cb
RC		 92int (*dmasound_init)(struct saa7134_dev *dev);
93int (*dmasound_exit)(struct saa7134_dev *dev);
94
1da177e4
LT		 95#define dprintk(fmt, arg...) if (core_debug) \
96 printk(KERN_DEBUG "%s/core: " fmt, dev->name , ## arg)
97
1da177e4
LT		 98void saa7134_track_gpio(struct saa7134_dev *dev, char *msg)
99{
100 unsigned long mode,status;
101
102 if (!gpio_tracking)
103 return;
104 /* rising SAA7134_GPIO_GPRESCAN reads the status */
105 saa_andorb(SAA7134_GPIO_GPMODE3,SAA7134_GPIO_GPRESCAN,0);
106 saa_andorb(SAA7134_GPIO_GPMODE3,SAA7134_GPIO_GPRESCAN,SAA7134_GPIO_GPRESCAN);
107 mode = saa_readl(SAA7134_GPIO_GPMODE0 >> 2) & 0xfffffff;
108 status = saa_readl(SAA7134_GPIO_GPSTATUS0 >> 2) & 0xfffffff;
109 printk(KERN_DEBUG
110 "%s: gpio: mode=0x%07lx in=0x%07lx out=0x%07lx [%s]\n",
111 dev->name, mode, (~mode) & status, mode & status, msg);
112}
113
114/* ------------------------------------------------------------------ */
115
1da177e4
LT		 116
117/* ----------------------------------------------------------- */
118/* delayed request_module */
119
fd1eab73 120#if defined(CONFIG_MODULES) && defined(MODULE)
1da177e4
LT		 121static int need_empress;
122static int need_dvb;
b54134be 123static int need_alsa;
4aabf633 124static int need_oss;
1da177e4
LT		 125
126static int pending_call(struct notifier_block *self, unsigned long state,
127 void *module)
128{
129 if (module != THIS_MODULE || state != MODULE_STATE_LIVE)
130 return NOTIFY_DONE;
131
4ac97914
MCC		 132 if (need_empress)
133 request_module("saa7134-empress");
134 if (need_dvb)
135 request_module("saa7134-dvb");
b54134be
RC		 136 if (need_alsa)
137 request_module("saa7134-alsa");
4aabf633
RC		 138 if (need_oss)
139 request_module("saa7134-oss");
1da177e4
LT		 140 return NOTIFY_DONE;
141}
142
d21838dd 143static int pending_registered=0;
1da177e4
LT		 144static struct notifier_block pending_notifier = {
145 .notifier_call = pending_call,
146};
147
148static void request_module_depend(char *name, int *flag)
149{
4aabf633 150 int err;
1da177e4
LT		 151 switch (THIS_MODULE->state) {
152 case MODULE_STATE_COMING:
153 if (!pending_registered) {
4aabf633 154 err = register_module_notifier(&pending_notifier);
1da177e4
LT		 155 pending_registered = 1;
156 }
157 *flag = 1;
158 break;
159 case MODULE_STATE_LIVE:
160 request_module(name);
161 break;
162 default:
163 /* nothing */;
164 break;
165 }
166}
167
168#else
1da177e4 169#define request_module_depend(name,flag)
1da177e4
LT		 170#endif /* CONFIG_MODULES */
171
172/* ------------------------------------------------------------------ */
173
174/* nr of (saa7134-)pages for the given buffer size */
175static int saa7134_buffer_pages(int size)
176{
177 size = PAGE_ALIGN(size);
178 size += PAGE_SIZE; /* for non-page-aligned buffers */
179 size /= 4096;
180 return size;
181}
182
183/* calc max # of buffers from size (must not exceed the 4MB virtual
184 * address space per DMA channel) */
185int saa7134_buffer_count(unsigned int size, unsigned int count)
186{
187 unsigned int maxcount;
188
189 maxcount = 1024 / saa7134_buffer_pages(size);
190 if (count > maxcount)
191 count = maxcount;
192 return count;
193}
194
195int saa7134_buffer_startpage(struct saa7134_buf *buf)
196{
197 return saa7134_buffer_pages(buf->vb.bsize) * buf->vb.i;
198}
199
200unsigned long saa7134_buffer_base(struct saa7134_buf *buf)
201{
202 unsigned long base;
203
204 base = saa7134_buffer_startpage(buf) * 4096;
205 base += buf->vb.dma.sglist[0].offset;
206 return base;
207}
208
209/* ------------------------------------------------------------------ */
210
211int saa7134_pgtable_alloc(struct pci_dev *pci, struct saa7134_pgtable *pt)
212{
4ac97914
MCC		 213 __le32 *cpu;
214 dma_addr_t dma_addr;
1da177e4
LT		 215
216 cpu = pci_alloc_consistent(pci, SAA7134_PGTABLE_SIZE, &dma_addr);
217 if (NULL == cpu)
218 return -ENOMEM;
219 pt->size = SAA7134_PGTABLE_SIZE;
220 pt->cpu = cpu;
221 pt->dma = dma_addr;
222 return 0;
223}
224
225int saa7134_pgtable_build(struct pci_dev *pci, struct saa7134_pgtable *pt,
226 struct scatterlist *list, unsigned int length,
227 unsigned int startpage)
228{
c9c12b79 229 __le32 *ptr;
1da177e4
LT		 230 unsigned int i,p;
231
232 BUG_ON(NULL == pt || NULL == pt->cpu);
233
234 ptr = pt->cpu + startpage;
235 for (i = 0; i < length; i++, list++)
236 for (p = 0; p * 4096 < list->length; p++, ptr++)
a20758fa 237 *ptr = cpu_to_le32(sg_dma_address(list) - list->offset);
1da177e4
LT		 238 return 0;
239}
240
241void saa7134_pgtable_free(struct pci_dev *pci, struct saa7134_pgtable *pt)
242{
243 if (NULL == pt->cpu)
244 return;
245 pci_free_consistent(pci, pt->size, pt->cpu, pt->dma);
246 pt->cpu = NULL;
247}
248
249/* ------------------------------------------------------------------ */
250
251void saa7134_dma_free(struct saa7134_dev *dev,struct saa7134_buf *buf)
252{
253 if (in_interrupt())
254 BUG();
255
256 videobuf_waiton(&buf->vb,0,0);
257 videobuf_dma_pci_unmap(dev->pci, &buf->vb.dma);
258 videobuf_dma_free(&buf->vb.dma);
259 buf->vb.state = STATE_NEEDS_INIT;
260}
261
262/* ------------------------------------------------------------------ */
263
264int saa7134_buffer_queue(struct saa7134_dev *dev,
265 struct saa7134_dmaqueue *q,
266 struct saa7134_buf *buf)
267{
268 struct saa7134_buf *next = NULL;
269
270 assert_spin_locked(&dev->slock);
271 dprintk("buffer_queue %p\n",buf);
272 if (NULL == q->curr) {
273 if (!q->need_two) {
274 q->curr = buf;
275 buf->activate(dev,buf,NULL);
276 } else if (list_empty(&q->queue)) {
277 list_add_tail(&buf->vb.queue,&q->queue);
278 buf->vb.state = STATE_QUEUED;
279 } else {
280 next = list_entry(q->queue.next,struct saa7134_buf,
281 vb.queue);
282 q->curr = buf;
283 buf->activate(dev,buf,next);
284 }
285 } else {
286 list_add_tail(&buf->vb.queue,&q->queue);
287 buf->vb.state = STATE_QUEUED;
288 }
289 return 0;
290}
291
292void saa7134_buffer_finish(struct saa7134_dev *dev,
293 struct saa7134_dmaqueue *q,
294 unsigned int state)
295{
296 assert_spin_locked(&dev->slock);
297 dprintk("buffer_finish %p\n",q->curr);
298
299 /* finish current buffer */
300 q->curr->vb.state = state;
301 do_gettimeofday(&q->curr->vb.ts);
302 wake_up(&q->curr->vb.done);
303 q->curr = NULL;
304}
305
306void saa7134_buffer_next(struct saa7134_dev *dev,
307 struct saa7134_dmaqueue *q)
308{
309 struct saa7134_buf *buf,*next = NULL;
310
311 assert_spin_locked(&dev->slock);
312 BUG_ON(NULL != q->curr);
313
314 if (!list_empty(&q->queue)) {
315 /* activate next one from queue */
316 buf = list_entry(q->queue.next,struct saa7134_buf,vb.queue);
317 dprintk("buffer_next %p [prev=%p/next=%p]\n",
318 buf,q->queue.prev,q->queue.next);
319 list_del(&buf->vb.queue);
320 if (!list_empty(&q->queue))
321 next = list_entry(q->queue.next,struct saa7134_buf,
322 vb.queue);
323 q->curr = buf;
324 buf->activate(dev,buf,next);
325 dprintk("buffer_next #2 prev=%p/next=%p\n",
326 q->queue.prev,q->queue.next);
327 } else {
328 /* nothing to do -- just stop DMA */
329 dprintk("buffer_next %p\n",NULL);
330 saa7134_set_dmabits(dev);
331 del_timer(&q->timeout);
332 }
333}
334
335void saa7134_buffer_timeout(unsigned long data)
336{
337 struct saa7134_dmaqueue *q = (struct saa7134_dmaqueue*)data;
338 struct saa7134_dev *dev = q->dev;
339 unsigned long flags;
340
341 spin_lock_irqsave(&dev->slock,flags);
342
343 /* try to reset the hardware (SWRST) */
344 saa_writeb(SAA7134_REGION_ENABLE, 0x00);
345 saa_writeb(SAA7134_REGION_ENABLE, 0x80);
346 saa_writeb(SAA7134_REGION_ENABLE, 0x00);
347
348 /* flag current buffer as failed,
349 try to start over with the next one. */
350 if (q->curr) {
351 dprintk("timeout on %p\n",q->curr);
352 saa7134_buffer_finish(dev,q,STATE_ERROR);
353 }
354 saa7134_buffer_next(dev,q);
355 spin_unlock_irqrestore(&dev->slock,flags);
356}
357
358/* ------------------------------------------------------------------ */
359
360int saa7134_set_dmabits(struct saa7134_dev *dev)
361{
362 u32 split, task=0, ctrl=0, irq=0;
363 enum v4l2_field cap = V4L2_FIELD_ANY;
364 enum v4l2_field ov = V4L2_FIELD_ANY;
365
366 assert_spin_locked(&dev->slock);
367
368 /* video capture -- dma 0 + video task A */
369 if (dev->video_q.curr) {
370 task |= 0x01;
371 ctrl |= SAA7134_MAIN_CTRL_TE0;
372 irq |= SAA7134_IRQ1_INTE_RA0_1 |
373 SAA7134_IRQ1_INTE_RA0_0;
4ac97914 374 cap = dev->video_q.curr->vb.field;
1da177e4
LT		 375 }
376
377 /* video capture -- dma 1+2 (planar modes) */
378 if (dev->video_q.curr &&
379 dev->video_q.curr->fmt->planar) {
380 ctrl |= SAA7134_MAIN_CTRL_TE4 |
381 SAA7134_MAIN_CTRL_TE5;
382 }
383
384 /* screen overlay -- dma 0 + video task B */
385 if (dev->ovenable) {
386 task |= 0x10;
387 ctrl |= SAA7134_MAIN_CTRL_TE1;
388 ov = dev->ovfield;
389 }
390
391 /* vbi capture -- dma 0 + vbi task A+B */
392 if (dev->vbi_q.curr) {
393 task |= 0x22;
394 ctrl |= SAA7134_MAIN_CTRL_TE2 |
395 SAA7134_MAIN_CTRL_TE3;
396 irq |= SAA7134_IRQ1_INTE_RA0_7 |
397 SAA7134_IRQ1_INTE_RA0_6 |
398 SAA7134_IRQ1_INTE_RA0_5 |
399 SAA7134_IRQ1_INTE_RA0_4;
400 }
401
402 /* audio capture -- dma 3 */
b54134be 403 if (dev->dmasound.dma_running) {
1da177e4
LT		 404 ctrl |= SAA7134_MAIN_CTRL_TE6;
405 irq |= SAA7134_IRQ1_INTE_RA3_1 |
406 SAA7134_IRQ1_INTE_RA3_0;
407 }
408
409 /* TS capture -- dma 5 */
410 if (dev->ts_q.curr) {
411 ctrl |= SAA7134_MAIN_CTRL_TE5;
412 irq |= SAA7134_IRQ1_INTE_RA2_3 |
413 SAA7134_IRQ1_INTE_RA2_2 |
414 SAA7134_IRQ1_INTE_RA2_1 |
415 SAA7134_IRQ1_INTE_RA2_0;
416 }
417
418 /* set task conditions + field handling */
419 if (V4L2_FIELD_HAS_BOTH(cap) || V4L2_FIELD_HAS_BOTH(ov) || cap == ov) {
420 /* default config -- use full frames */
421 saa_writeb(SAA7134_TASK_CONDITIONS(TASK_A), 0x0d);
422 saa_writeb(SAA7134_TASK_CONDITIONS(TASK_B), 0x0d);
423 saa_writeb(SAA7134_FIELD_HANDLING(TASK_A), 0x02);
424 saa_writeb(SAA7134_FIELD_HANDLING(TASK_B), 0x02);
425 split = 0;
426 } else {
427 /* split fields between tasks */
428 if (V4L2_FIELD_TOP == cap) {
429 /* odd A, even B, repeat */
430 saa_writeb(SAA7134_TASK_CONDITIONS(TASK_A), 0x0d);
431 saa_writeb(SAA7134_TASK_CONDITIONS(TASK_B), 0x0e);
432 } else {
433 /* odd B, even A, repeat */
434 saa_writeb(SAA7134_TASK_CONDITIONS(TASK_A), 0x0e);
435 saa_writeb(SAA7134_TASK_CONDITIONS(TASK_B), 0x0d);
436 }
437 saa_writeb(SAA7134_FIELD_HANDLING(TASK_A), 0x01);
438 saa_writeb(SAA7134_FIELD_HANDLING(TASK_B), 0x01);
439 split = 1;
440 }
441
442 /* irqs */
443 saa_writeb(SAA7134_REGION_ENABLE, task);
444 saa_writel(SAA7134_IRQ1, irq);
445 saa_andorl(SAA7134_MAIN_CTRL,
446 SAA7134_MAIN_CTRL_TE0 |
447 SAA7134_MAIN_CTRL_TE1 |
448 SAA7134_MAIN_CTRL_TE2 |
449 SAA7134_MAIN_CTRL_TE3 |
450 SAA7134_MAIN_CTRL_TE4 |
451 SAA7134_MAIN_CTRL_TE5 |
452 SAA7134_MAIN_CTRL_TE6,
453 ctrl);
454 dprintk("dmabits: task=0x%02x ctrl=0x%02x irq=0x%x split=%s\n",
455 task, ctrl, irq, split ? "no" : "yes");
456
457 return 0;
458}
459
460/* ------------------------------------------------------------------ */
461/* IRQ handler + helpers */
462
463static char *irqbits[] = {
464 "DONE_RA0", "DONE_RA1", "DONE_RA2", "DONE_RA3",
465 "AR", "PE", "PWR_ON", "RDCAP", "INTL", "FIDT", "MMC",
466 "TRIG_ERR", "CONF_ERR", "LOAD_ERR",
467 "GPIO16?", "GPIO18", "GPIO22", "GPIO23"
468};
469#define IRQBITS ARRAY_SIZE(irqbits)
470
471static void print_irqstatus(struct saa7134_dev *dev, int loop,
472 unsigned long report, unsigned long status)
473{
474 unsigned int i;
475
476 printk(KERN_DEBUG "%s/irq[%d,%ld]: r=0x%lx s=0x%02lx",
477 dev->name,loop,jiffies,report,status);
478 for (i = 0; i < IRQBITS; i++) {
479 if (!(report & (1 << i)))
480 continue;
481 printk(" %s",irqbits[i]);
482 }
483 if (report & SAA7134_IRQ_REPORT_DONE_RA0) {
484 printk(" | RA0=%s,%s,%s,%ld",
485 (status & 0x40) ? "vbi" : "video",
486 (status & 0x20) ? "b" : "a",
487 (status & 0x10) ? "odd" : "even",
488 (status & 0x0f));
489 }
490 printk("\n");
491}
492
493static irqreturn_t saa7134_irq(int irq, void *dev_id, struct pt_regs *regs)
494{
495 struct saa7134_dev *dev = (struct saa7134_dev*) dev_id;
496 unsigned long report,status;
497 int loop, handled = 0;
498
499 for (loop = 0; loop < 10; loop++) {
500 report = saa_readl(SAA7134_IRQ_REPORT);
501 status = saa_readl(SAA7134_IRQ_STATUS);
502 if (0 == report) {
503 if (irq_debug > 1)
504 printk(KERN_DEBUG "%s/irq: no (more) work\n",
505 dev->name);
506 goto out;
507 }
79dd0c69 508
4aabf633
RC		 509 /* If dmasound support is active and we get a sound report, exit
510 and let the saa7134-alsa/oss module deal with it */
79dd0c69 511
4aabf633
RC		 512 if ((report & SAA7134_IRQ_REPORT_DONE_RA3) &&
513 (dev->dmasound.priv_data != NULL) )
514 {
79dd0c69 515 if (irq_debug > 1)
4aabf633 516 printk(KERN_DEBUG "%s/irq: ignoring interrupt for DMA sound\n",
79dd0c69
RC		 517 dev->name);
518 goto out;
519 }
520
1da177e4
LT		 521 handled = 1;
522 saa_writel(SAA7134_IRQ_REPORT,report);
523 if (irq_debug)
524 print_irqstatus(dev,loop,report,status);
525
1da177e4
LT		 526
527 if (report & SAA7134_IRQ_REPORT_RDCAP /* _INTL */)
528 saa7134_irq_video_intl(dev);
529
530 if ((report & SAA7134_IRQ_REPORT_DONE_RA0) &&
531 (status & 0x60) == 0)
532 saa7134_irq_video_done(dev,status);
533
534 if ((report & SAA7134_IRQ_REPORT_DONE_RA0) &&
535 (status & 0x40) == 0x40)
536 saa7134_irq_vbi_done(dev,status);
537
538 if ((report & SAA7134_IRQ_REPORT_DONE_RA2) &&
539 card_has_mpeg(dev))
540 saa7134_irq_ts_done(dev,status);
541
0602fbb2
PM		 542 if (report & SAA7134_IRQ_REPORT_GPIO16) {
543 switch (dev->has_remote) {
544 case SAA7134_REMOTE_GPIO:
545 if (dev->remote->mask_keydown & 0x10000) {
546 saa7134_input_irq(dev);
547 }
548 break;
549
550 case SAA7134_REMOTE_I2C:
551 break; /* FIXME: invoke I2C get_key() */
552
553 default: /* GPIO16 not used by IR remote */
554 break;
555 }
556 }
bd15eba3 557
0602fbb2
PM		 558 if (report & SAA7134_IRQ_REPORT_GPIO18) {
559 switch (dev->has_remote) {
560 case SAA7134_REMOTE_GPIO:
561 if ((dev->remote->mask_keydown & 0x40000) ||
562 (dev->remote->mask_keyup & 0x40000)) {
563 saa7134_input_irq(dev);
564 }
565 break;
566
567 case SAA7134_REMOTE_I2C:
568 break; /* FIXME: invoke I2C get_key() */
569
570 default: /* GPIO18 not used by IR remote */
571 break;
572 }
573 }
1da177e4
LT		 574 }
575
576 if (10 == loop) {
577 print_irqstatus(dev,loop,report,status);
578 if (report & SAA7134_IRQ_REPORT_PE) {
579 /* disable all parity error */
580 printk(KERN_WARNING "%s/irq: looping -- "
581 "clearing PE (parity error!) enable bit\n",dev->name);
582 saa_clearl(SAA7134_IRQ2,SAA7134_IRQ2_INTE_PE);
0602fbb2
PM		 583 } else if (report & SAA7134_IRQ_REPORT_GPIO16) {
584 /* disable gpio16 IRQ */
1da177e4 585 printk(KERN_WARNING "%s/irq: looping -- "
0602fbb2
PM		 586 "clearing GPIO16 enable bit\n",dev->name);
587 saa_clearl(SAA7134_IRQ2, SAA7134_IRQ2_INTE_GPIO16);
588 } else if (report & SAA7134_IRQ_REPORT_GPIO18) {
589 /* disable gpio18 IRQs */
590 printk(KERN_WARNING "%s/irq: looping -- "
591 "clearing GPIO18 enable bit\n",dev->name);
592 saa_clearl(SAA7134_IRQ2, SAA7134_IRQ2_INTE_GPIO18);
1da177e4
LT		 593 } else {
594 /* disable all irqs */
595 printk(KERN_WARNING "%s/irq: looping -- "
596 "clearing all enable bits\n",dev->name);
597 saa_writel(SAA7134_IRQ1,0);
598 saa_writel(SAA7134_IRQ2,0);
599 }
600 }
601
602 out:
603 return IRQ_RETVAL(handled);
604}
605
606/* ------------------------------------------------------------------ */
607
608/* early init (no i2c, no irq) */
609static int saa7134_hwinit1(struct saa7134_dev *dev)
610{
611 dprintk("hwinit1\n");
612
613 saa_writel(SAA7134_IRQ1, 0);
614 saa_writel(SAA7134_IRQ2, 0);
4ac97914 615 init_MUTEX(&dev->lock);
1da177e4
LT		 616 spin_lock_init(&dev->slock);
617
618 saa7134_track_gpio(dev,"pre-init");
619 saa7134_video_init1(dev);
620 saa7134_vbi_init1(dev);
621 if (card_has_mpeg(dev))
622 saa7134_ts_init1(dev);
623 saa7134_input_init1(dev);
624
1da177e4
LT		 625 /* RAM FIFO config */
626 saa_writel(SAA7134_FIFO_SIZE, 0x08070503);
627 saa_writel(SAA7134_THRESHOULD,0x02020202);
628
629 /* enable audio + video processing */
630 saa_writel(SAA7134_MAIN_CTRL,
631 SAA7134_MAIN_CTRL_VPLLE |
632 SAA7134_MAIN_CTRL_APLLE |
633 SAA7134_MAIN_CTRL_EXOSC |
634 SAA7134_MAIN_CTRL_EVFE1 |
635 SAA7134_MAIN_CTRL_EVFE2 |
636 SAA7134_MAIN_CTRL_ESFE |
1da177e4
LT		 637 SAA7134_MAIN_CTRL_EBDAC);
638
17a05ef3
NS		 639 /*
640 * Initialize OSS _after_ enabling audio clock PLL and audio processing.
641 * OSS initialization writes to registers via the audio DSP; these
642 * writes will fail unless the audio clock has been started. At worst,
643 * audio will not work.
644 */
645
1da177e4
LT		 646 /* enable peripheral devices */
647 saa_writeb(SAA7134_SPECIAL_MODE, 0x01);
648
649 /* set vertical line numbering start (vbi needs this) */
650 saa_writeb(SAA7134_SOURCE_TIMING2, 0x20);
651
652 return 0;
653}
654
655/* late init (with i2c + irq) */
656static int saa7134_hwinit2(struct saa7134_dev *dev)
657{
330a115a 658 unsigned int irq2_mask;
1da177e4
LT		 659 dprintk("hwinit2\n");
660
661 saa7134_video_init2(dev);
662 saa7134_tvaudio_init2(dev);
663
664 /* enable IRQ's */
4ac97914 665 irq2_mask =
330a115a
MCC		 666 SAA7134_IRQ2_INTE_DEC3 |
667 SAA7134_IRQ2_INTE_DEC2 |
668 SAA7134_IRQ2_INTE_DEC1 |
669 SAA7134_IRQ2_INTE_DEC0 |
670 SAA7134_IRQ2_INTE_PE |
671 SAA7134_IRQ2_INTE_AR;
672
0602fbb2
PM		 673 if (dev->has_remote == SAA7134_REMOTE_GPIO) {
674 if (dev->remote->mask_keydown & 0x10000)
675 irq2_mask |= SAA7134_IRQ2_INTE_GPIO16;
676 else if (dev->remote->mask_keydown & 0x40000)
677 irq2_mask |= SAA7134_IRQ2_INTE_GPIO18;
678 else if (dev->remote->mask_keyup & 0x40000)
679 irq2_mask |= SAA7134_IRQ2_INTE_GPIO18A;
680 }
330a115a 681
1da177e4 682 saa_writel(SAA7134_IRQ1, 0);
330a115a 683 saa_writel(SAA7134_IRQ2, irq2_mask);
1da177e4
LT		 684
685 return 0;
686}
687
688/* shutdown */
689static int saa7134_hwfini(struct saa7134_dev *dev)
690{
691 dprintk("hwfini\n");
692
1da177e4
LT		 693 if (card_has_mpeg(dev))
694 saa7134_ts_fini(dev);
695 saa7134_input_fini(dev);
696 saa7134_vbi_fini(dev);
697 saa7134_video_fini(dev);
698 saa7134_tvaudio_fini(dev);
699 return 0;
700}
701
702static void __devinit must_configure_manually(void)
703{
704 unsigned int i,p;
705
706 printk(KERN_WARNING
707 "saa7134: <rant>\n"
708 "saa7134: Congratulations! Your TV card vendor saved a few\n"
709 "saa7134: cents for a eeprom, thus your pci board has no\n"
710 "saa7134: subsystem ID and I can't identify it automatically\n"
711 "saa7134: </rant>\n"
712 "saa7134: I feel better now. Ok, here are the good news:\n"
713 "saa7134: You can use the card=<nr> insmod option to specify\n"
714 "saa7134: which board do you have. The list:\n");
715 for (i = 0; i < saa7134_bcount; i++) {
716 printk(KERN_WARNING "saa7134: card=%d -> %-40.40s",
717 i,saa7134_boards[i].name);
718 for (p = 0; saa7134_pci_tbl[p].driver_data; p++) {
719 if (saa7134_pci_tbl[p].driver_data != i)
720 continue;
721 printk(" %04x:%04x",
722 saa7134_pci_tbl[p].subvendor,
723 saa7134_pci_tbl[p].subdevice);
724 }
725 printk("\n");
726 }
727}
728
729static struct video_device *vdev_init(struct saa7134_dev *dev,
730 struct video_device *template,
731 char *type)
732{
733 struct video_device *vfd;
734
735 vfd = video_device_alloc();
736 if (NULL == vfd)
737 return NULL;
738 *vfd = *template;
739 vfd->minor = -1;
740 vfd->dev = &dev->pci->dev;
741 vfd->release = video_device_release;
742 snprintf(vfd->name, sizeof(vfd->name), "%s %s (%s)",
743 dev->name, type, saa7134_boards[dev->board].name);
744 return vfd;
745}
746
747static void saa7134_unregister_video(struct saa7134_dev *dev)
748{
749 if (dev->video_dev) {
750 if (-1 != dev->video_dev->minor)
751 video_unregister_device(dev->video_dev);
752 else
753 video_device_release(dev->video_dev);
754 dev->video_dev = NULL;
755 }
756 if (dev->vbi_dev) {
757 if (-1 != dev->vbi_dev->minor)
758 video_unregister_device(dev->vbi_dev);
759 else
760 video_device_release(dev->vbi_dev);
761 dev->vbi_dev = NULL;
762 }
763 if (dev->radio_dev) {
764 if (-1 != dev->radio_dev->minor)
765 video_unregister_device(dev->radio_dev);
766 else
767 video_device_release(dev->radio_dev);
768 dev->radio_dev = NULL;
769 }
770}
771
772static void mpeg_ops_attach(struct saa7134_mpeg_ops *ops,
773 struct saa7134_dev *dev)
774{
775 int err;
776
777 if (NULL != dev->mops)
778 return;
779 if (saa7134_boards[dev->board].mpeg != ops->type)
780 return;
781 err = ops->init(dev);
782 if (0 != err)
783 return;
784 dev->mops = ops;
785}
786
787static void mpeg_ops_detach(struct saa7134_mpeg_ops *ops,
788 struct saa7134_dev *dev)
789{
790 if (NULL == dev->mops)
791 return;
792 if (dev->mops != ops)
793 return;
794 dev->mops->fini(dev);
795 dev->mops = NULL;
796}
797
798static int __devinit saa7134_initdev(struct pci_dev *pci_dev,
799 const struct pci_device_id *pci_id)
800{
801 struct saa7134_dev *dev;
802 struct list_head *item;
803 struct saa7134_mpeg_ops *mops;
804 int err;
805
7408187d 806 dev = kzalloc(sizeof(*dev),GFP_KERNEL);
1da177e4
LT		 807 if (NULL == dev)
808 return -ENOMEM;
1da177e4
LT		 809
810 /* pci init */
811 dev->pci = pci_dev;
812 if (pci_enable_device(pci_dev)) {
813 err = -EIO;
814 goto fail1;
815 }
816
817 dev->nr = saa7134_devcount;
818 sprintf(dev->name,"saa%x[%d]",pci_dev->device,dev->nr);
819
820 /* pci quirks */
821 if (pci_pci_problems) {
822 if (pci_pci_problems & PCIPCI_TRITON)
823 printk(KERN_INFO "%s: quirk: PCIPCI_TRITON\n", dev->name);
824 if (pci_pci_problems & PCIPCI_NATOMA)
825 printk(KERN_INFO "%s: quirk: PCIPCI_NATOMA\n", dev->name);
826 if (pci_pci_problems & PCIPCI_VIAETBF)
827 printk(KERN_INFO "%s: quirk: PCIPCI_VIAETBF\n", dev->name);
828 if (pci_pci_problems & PCIPCI_VSFX)
829 printk(KERN_INFO "%s: quirk: PCIPCI_VSFX\n",dev->name);
830#ifdef PCIPCI_ALIMAGIK
831 if (pci_pci_problems & PCIPCI_ALIMAGIK) {
832 printk(KERN_INFO "%s: quirk: PCIPCI_ALIMAGIK -- latency fixup\n",
833 dev->name);
834 latency = 0x0A;
835 }
836#endif
837 }
838 if (UNSET != latency) {
839 printk(KERN_INFO "%s: setting pci latency timer to %d\n",
840 dev->name,latency);
841 pci_write_config_byte(pci_dev, PCI_LATENCY_TIMER, latency);
842 }
843
844 /* print pci info */
845 pci_read_config_byte(pci_dev, PCI_CLASS_REVISION, &dev->pci_rev);
4ac97914
MCC		 846 pci_read_config_byte(pci_dev, PCI_LATENCY_TIMER, &dev->pci_lat);
847 printk(KERN_INFO "%s: found at %s, rev: %d, irq: %d, "
1da177e4
LT		 848 "latency: %d, mmio: 0x%lx\n", dev->name,
849 pci_name(pci_dev), dev->pci_rev, pci_dev->irq,
850 dev->pci_lat,pci_resource_start(pci_dev,0));
851 pci_set_master(pci_dev);
852 if (!pci_dma_supported(pci_dev,0xffffffff)) {
853 printk("%s: Oops: no 32bit PCI DMA ???\n",dev->name);
854 err = -EIO;
855 goto fail1;
856 }
857
858 /* board config */
859 dev->board = pci_id->driver_data;
860 if (card[dev->nr] >= 0 &&
861 card[dev->nr] < saa7134_bcount)
862 dev->board = card[dev->nr];
863 if (SAA7134_BOARD_NOAUTO == dev->board) {
864 must_configure_manually();
865 dev->board = SAA7134_BOARD_UNKNOWN;
866 }
867 dev->tuner_type = saa7134_boards[dev->board].tuner_type;
868 dev->tda9887_conf = saa7134_boards[dev->board].tda9887_conf;
869 if (UNSET != tuner[dev->nr])
870 dev->tuner_type = tuner[dev->nr];
4ac97914 871 printk(KERN_INFO "%s: subsystem: %04x:%04x, board: %s [card=%d,%s]\n",
1da177e4
LT		 872 dev->name,pci_dev->subsystem_vendor,
873 pci_dev->subsystem_device,saa7134_boards[dev->board].name,
874 dev->board, card[dev->nr] == dev->board ?
875 "insmod option" : "autodetected");
876
877 /* get mmio */
878 if (!request_mem_region(pci_resource_start(pci_dev,0),
879 pci_resource_len(pci_dev,0),
880 dev->name)) {
881 err = -EBUSY;
882 printk(KERN_ERR "%s: can't get MMIO memory @ 0x%lx\n",
883 dev->name,pci_resource_start(pci_dev,0));
884 goto fail1;
885 }
886 dev->lmmio = ioremap(pci_resource_start(pci_dev,0), 0x1000);
887 dev->bmmio = (__u8 __iomem *)dev->lmmio;
888 if (NULL == dev->lmmio) {
889 err = -EIO;
890 printk(KERN_ERR "%s: can't ioremap() MMIO memory\n",
891 dev->name);
892 goto fail2;
893 }
894
895 /* initialize hardware #1 */
1da177e4
LT		 896 saa7134_board_init1(dev);
897 saa7134_hwinit1(dev);
898
899 /* get irq */
900 err = request_irq(pci_dev->irq, saa7134_irq,
901 SA_SHIRQ | SA_INTERRUPT, dev->name, dev);
902 if (err < 0) {
903 printk(KERN_ERR "%s: can't get IRQ %d\n",
904 dev->name,pci_dev->irq);
905 goto fail3;
906 }
907
908 /* wait a bit, register i2c bus */
909 msleep(100);
910 saa7134_i2c_register(dev);
911
912 /* initialize hardware #2 */
913 saa7134_board_init2(dev);
914 saa7134_hwinit2(dev);
915
916 /* load i2c helpers */
917 if (TUNER_ABSENT != dev->tuner_type)
918 request_module("tuner");
919 if (dev->tda9887_conf)
920 request_module("tda9887");
4ac97914 921 if (card_is_empress(dev)) {
1da177e4
LT		 922 request_module("saa6752hs");
923 request_module_depend("saa7134-empress",&need_empress);
924 }
330a115a 925
4ac97914 926 if (card_is_dvb(dev))
1da177e4
LT		 927 request_module_depend("saa7134-dvb",&need_dvb);
928
4aabf633
RC		 929
930 if (alsa)
b54134be 931 request_module_depend("saa7134-alsa",&need_alsa);
b54134be 932
4aabf633
RC		 933 if (oss)
934 request_module_depend("saa7134-oss",&need_oss);
b54134be 935
1da177e4
LT		 936 v4l2_prio_init(&dev->prio);
937
938 /* register v4l devices */
939 dev->video_dev = vdev_init(dev,&saa7134_video_template,"video");
940 err = video_register_device(dev->video_dev,VFL_TYPE_GRABBER,
941 video_nr[dev->nr]);
942 if (err < 0) {
943 printk(KERN_INFO "%s: can't register video device\n",
944 dev->name);
945 goto fail4;
946 }
947 printk(KERN_INFO "%s: registered device video%d [v4l2]\n",
948 dev->name,dev->video_dev->minor & 0x1f);
949
950 dev->vbi_dev = vdev_init(dev,&saa7134_vbi_template,"vbi");
951 err = video_register_device(dev->vbi_dev,VFL_TYPE_VBI,
952 vbi_nr[dev->nr]);
953 if (err < 0)
954 goto fail4;
955 printk(KERN_INFO "%s: registered device vbi%d\n",
956 dev->name,dev->vbi_dev->minor & 0x1f);
957
958 if (card_has_radio(dev)) {
959 dev->radio_dev = vdev_init(dev,&saa7134_radio_template,"radio");
960 err = video_register_device(dev->radio_dev,VFL_TYPE_RADIO,
961 radio_nr[dev->nr]);
962 if (err < 0)
963 goto fail4;
964 printk(KERN_INFO "%s: registered device radio%d\n",
965 dev->name,dev->radio_dev->minor & 0x1f);
966 }
967
1da177e4
LT		 968 /* everything worked */
969 pci_set_drvdata(pci_dev,dev);
970 saa7134_devcount++;
971
972 down(&devlist_lock);
973 list_for_each(item,&mops_list) {
974 mops = list_entry(item, struct saa7134_mpeg_ops, next);
975 mpeg_ops_attach(mops, dev);
976 }
977 list_add_tail(&dev->devlist,&saa7134_devlist);
978 up(&devlist_lock);
979
980 /* check for signal */
981 saa7134_irq_video_intl(dev);
c817e763 982
f5b974cb
RC		 983 if (dmasound_init && !dev->dmasound.priv_data) {
984 dmasound_init(dev);
985 }
986
1da177e4
LT		 987 return 0;
988
1da177e4
LT		 989 fail4:
990 saa7134_unregister_video(dev);
991 saa7134_i2c_unregister(dev);
992 free_irq(pci_dev->irq, dev);
993 fail3:
994 saa7134_hwfini(dev);
995 iounmap(dev->lmmio);
996 fail2:
997 release_mem_region(pci_resource_start(pci_dev,0),
998 pci_resource_len(pci_dev,0));
999 fail1:
1000 kfree(dev);
1001 return err;
1002}
1003
1004static void __devexit saa7134_finidev(struct pci_dev *pci_dev)
1005{
4ac97914 1006 struct saa7134_dev *dev = pci_get_drvdata(pci_dev);
1da177e4
LT		 1007 struct list_head *item;
1008 struct saa7134_mpeg_ops *mops;
1009
f5b974cb
RC		 1010 /* Release DMA sound modules if present */
1011 if (dmasound_exit && dev->dmasound.priv_data) {
1012 dmasound_exit(dev);
1013 }
1014
1da177e4
LT		 1015 /* debugging ... */
1016 if (irq_debug) {
1017 u32 report = saa_readl(SAA7134_IRQ_REPORT);
1018 u32 status = saa_readl(SAA7134_IRQ_STATUS);
1019 print_irqstatus(dev,42,report,status);
1020 }
1021
1022 /* disable peripheral devices */
1023 saa_writeb(SAA7134_SPECIAL_MODE,0);
1024
1025 /* shutdown hardware */
1026 saa_writel(SAA7134_IRQ1,0);
1027 saa_writel(SAA7134_IRQ2,0);
1028 saa_writel(SAA7134_MAIN_CTRL,0);
1029
1030 /* shutdown subsystems */
1031 saa7134_hwfini(dev);
1032
1033 /* unregister */
1034 down(&devlist_lock);
1035 list_del(&dev->devlist);
1036 list_for_each(item,&mops_list) {
1037 mops = list_entry(item, struct saa7134_mpeg_ops, next);
1038 mpeg_ops_detach(mops, dev);
1039 }
1040 up(&devlist_lock);
1041 saa7134_devcount--;
1042
1043 saa7134_i2c_unregister(dev);
1da177e4
LT		 1044 saa7134_unregister_video(dev);
1045
f5b974cb 1046
4aabf633
RC		 1047 /* the DMA sound modules should be unloaded before reaching
1048 this, but just in case they are still present... */
1049 if (dev->dmasound.priv_data != NULL) {
1050 free_irq(pci_dev->irq, &dev->dmasound);
1051 dev->dmasound.priv_data = NULL;
1052 }
1053
f5b974cb 1054
4aabf633 1055 /* release resources */
1da177e4
LT		 1056 free_irq(pci_dev->irq, dev);
1057 iounmap(dev->lmmio);
1058 release_mem_region(pci_resource_start(pci_dev,0),
1059 pci_resource_len(pci_dev,0));
1060
1da177e4
LT		 1061 pci_set_drvdata(pci_dev, NULL);
1062
1063 /* free memory */
1064 kfree(dev);
1065}
1066
1067/* ----------------------------------------------------------- */
1068
1069int saa7134_ts_register(struct saa7134_mpeg_ops *ops)
1070{
1071 struct list_head *item;
1072 struct saa7134_dev *dev;
1073
1074 down(&devlist_lock);
1075 list_for_each(item,&saa7134_devlist) {
1076 dev = list_entry(item, struct saa7134_dev, devlist);
1077 mpeg_ops_attach(ops, dev);
1078 }
1079 list_add_tail(&ops->next,&mops_list);
1080 up(&devlist_lock);
1081 return 0;
1082}
1083
1084void saa7134_ts_unregister(struct saa7134_mpeg_ops *ops)
1085{
1086 struct list_head *item;
1087 struct saa7134_dev *dev;
1088
1089 down(&devlist_lock);
1090 list_del(&ops->next);
1091 list_for_each(item,&saa7134_devlist) {
1092 dev = list_entry(item, struct saa7134_dev, devlist);
1093 mpeg_ops_detach(ops, dev);
1094 }
1095 up(&devlist_lock);
1096}
1097
1098EXPORT_SYMBOL(saa7134_ts_register);
1099EXPORT_SYMBOL(saa7134_ts_unregister);
1100
1101/* ----------------------------------------------------------- */
1102
1103static struct pci_driver saa7134_pci_driver = {
4ac97914
MCC		 1104 .name = "saa7134",
1105 .id_table = saa7134_pci_tbl,
1106 .probe = saa7134_initdev,
1107 .remove = __devexit_p(saa7134_finidev),
1da177e4
LT		 1108};
1109
1110static int saa7134_init(void)
1111{
1112 INIT_LIST_HEAD(&saa7134_devlist);
1113 printk(KERN_INFO "saa7130/34: v4l2 driver version %d.%d.%d loaded\n",
1114 (SAA7134_VERSION_CODE >> 16) & 0xff,
1115 (SAA7134_VERSION_CODE >> 8) & 0xff,
1116 SAA7134_VERSION_CODE & 0xff);
1117#ifdef SNAPSHOT
1118 printk(KERN_INFO "saa7130/34: snapshot date %04d-%02d-%02d\n",
1119 SNAPSHOT/10000, (SNAPSHOT/100)%100, SNAPSHOT%100);
1120#endif
2304759d 1121 return pci_register_driver(&saa7134_pci_driver);
1da177e4
LT		 1122}
1123
1124static void saa7134_fini(void)
1125{
fd1eab73 1126#if defined(CONFIG_MODULES) && defined(MODULE)
1da177e4
LT		 1127 if (pending_registered)
1128 unregister_module_notifier(&pending_notifier);
fd1eab73 1129#endif /* CONFIG_MODULES */
1da177e4
LT		 1130 pci_unregister_driver(&saa7134_pci_driver);
1131}
1132
1133module_init(saa7134_init);
1134module_exit(saa7134_fini);
1135
1136/* ----------------------------------------------------------- */
1137
1da177e4
LT		 1138EXPORT_SYMBOL(saa7134_i2c_call_clients);
1139EXPORT_SYMBOL(saa7134_devlist);
1140EXPORT_SYMBOL(saa7134_boards);
1141
4aabf633 1142/* ----------------- for the DMA sound modules --------------- */
79dd0c69 1143
f5b974cb
RC		 1144EXPORT_SYMBOL(dmasound_init);
1145EXPORT_SYMBOL(dmasound_exit);
79dd0c69
RC		 1146EXPORT_SYMBOL(saa7134_pgtable_free);
1147EXPORT_SYMBOL(saa7134_pgtable_build);
1148EXPORT_SYMBOL(saa7134_pgtable_alloc);
1149EXPORT_SYMBOL(saa7134_set_dmabits);
1150
1da177e4
LT		 1151/* ----------------------------------------------------------- */
1152/*
1153 * Local variables:
1154 * c-basic-offset: 8
1155 * End:
1156 */
Linux 6.x block layer and io_uring tree(s)