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, 0)) * buf->vb2.v4l2_buf.index;
220 }
221 
222 unsigned long saa7134_buffer_base(struct saa7134_buf *buf)
223 {
224 	unsigned long base;
225 	struct sg_table *dma = vb2_dma_sg_plane_desc(&buf->vb2, 0);
226 
227 	base  = saa7134_buffer_startpage(buf) * 4096;
228 	base += dma->sgl[0].offset;
229 	return base;
230 }
231 
232 /* ------------------------------------------------------------------ */
233 
234 int saa7134_pgtable_alloc(struct pci_dev *pci, struct saa7134_pgtable *pt)
235 {
236 	__le32       *cpu;
237 	dma_addr_t   dma_addr = 0;
238 
239 	cpu = pci_alloc_consistent(pci, SAA7134_PGTABLE_SIZE, &dma_addr);
240 	if (NULL == cpu)
241 		return -ENOMEM;
242 	pt->size = SAA7134_PGTABLE_SIZE;
243 	pt->cpu  = cpu;
244 	pt->dma  = dma_addr;
245 	return 0;
246 }
247 
248 int saa7134_pgtable_build(struct pci_dev *pci, struct saa7134_pgtable *pt,
249 			  struct scatterlist *list, unsigned int length,
250 			  unsigned int startpage)
251 {
252 	__le32        *ptr;
253 	unsigned int  i, p;
254 
255 	BUG_ON(NULL == pt || NULL == pt->cpu);
256 
257 	ptr = pt->cpu + startpage;
258 	for (i = 0; i < length; i++, list = sg_next(list)) {
259 		for (p = 0; p * 4096 < list->length; p++, ptr++)
260 			*ptr = cpu_to_le32(sg_dma_address(list) +
261 						list->offset + p * 4096);
262 	}
263 	return 0;
264 }
265 
266 void saa7134_pgtable_free(struct pci_dev *pci, struct saa7134_pgtable *pt)
267 {
268 	if (NULL == pt->cpu)
269 		return;
270 	pci_free_consistent(pci, pt->size, pt->cpu, pt->dma);
271 	pt->cpu = NULL;
272 }
273 
274 /* ------------------------------------------------------------------ */
275 
276 int saa7134_buffer_queue(struct saa7134_dev *dev,
277 			 struct saa7134_dmaqueue *q,
278 			 struct saa7134_buf *buf)
279 {
280 	struct saa7134_buf *next = NULL;
281 	unsigned long flags;
282 
283 	spin_lock_irqsave(&dev->slock, flags);
284 	core_dbg("buffer_queue %p\n", buf);
285 	if (NULL == q->curr) {
286 		if (!q->need_two) {
287 			q->curr = buf;
288 			buf->activate(dev, buf, NULL);
289 		} else if (list_empty(&q->queue)) {
290 			list_add_tail(&buf->entry, &q->queue);
291 		} else {
292 			next = list_entry(q->queue.next, struct saa7134_buf,
293 					  entry);
294 			q->curr = buf;
295 			buf->activate(dev, buf, next);
296 		}
297 	} else {
298 		list_add_tail(&buf->entry, &q->queue);
299 	}
300 	spin_unlock_irqrestore(&dev->slock, flags);
301 	return 0;
302 }
303 
304 void saa7134_buffer_finish(struct saa7134_dev *dev,
305 			   struct saa7134_dmaqueue *q,
306 			   unsigned int state)
307 {
308 	core_dbg("buffer_finish %p\n", q->curr);
309 
310 	/* finish current buffer */
311 	v4l2_get_timestamp(&q->curr->vb2.v4l2_buf.timestamp);
312 	q->curr->vb2.v4l2_buf.sequence = q->seq_nr++;
313 	vb2_buffer_done(&q->curr->vb2, state);
314 	q->curr = NULL;
315 }
316 
317 void saa7134_buffer_next(struct saa7134_dev *dev,
318 			 struct saa7134_dmaqueue *q)
319 {
320 	struct saa7134_buf *buf,*next = NULL;
321 
322 	assert_spin_locked(&dev->slock);
323 	BUG_ON(NULL != q->curr);
324 
325 	if (!list_empty(&q->queue)) {
326 		/* activate next one from queue */
327 		buf = list_entry(q->queue.next, struct saa7134_buf, entry);
328 		core_dbg("buffer_next %p [prev=%p/next=%p]\n",
329 			buf, q->queue.prev, q->queue.next);
330 		list_del(&buf->entry);
331 		if (!list_empty(&q->queue))
332 			next = list_entry(q->queue.next, struct saa7134_buf, entry);
333 		q->curr = buf;
334 		buf->activate(dev, buf, next);
335 		core_dbg("buffer_next #2 prev=%p/next=%p\n",
336 			q->queue.prev, q->queue.next);
337 	} else {
338 		/* nothing to do -- just stop DMA */
339 		core_dbg("buffer_next %p\n", NULL);
340 		saa7134_set_dmabits(dev);
341 		del_timer(&q->timeout);
342 	}
343 }
344 
345 void saa7134_buffer_timeout(unsigned long data)
346 {
347 	struct saa7134_dmaqueue *q = (struct saa7134_dmaqueue *)data;
348 	struct saa7134_dev *dev = q->dev;
349 	unsigned long flags;
350 
351 	spin_lock_irqsave(&dev->slock, flags);
352 
353 	/* try to reset the hardware (SWRST) */
354 	saa_writeb(SAA7134_REGION_ENABLE, 0x00);
355 	saa_writeb(SAA7134_REGION_ENABLE, 0x80);
356 	saa_writeb(SAA7134_REGION_ENABLE, 0x00);
357 
358 	/* flag current buffer as failed,
359 	   try to start over with the next one. */
360 	if (q->curr) {
361 		core_dbg("timeout on %p\n", q->curr);
362 		saa7134_buffer_finish(dev, q, VB2_BUF_STATE_ERROR);
363 	}
364 	saa7134_buffer_next(dev, q);
365 	spin_unlock_irqrestore(&dev->slock, flags);
366 }
367 
368 void saa7134_stop_streaming(struct saa7134_dev *dev, struct saa7134_dmaqueue *q)
369 {
370 	unsigned long flags;
371 	struct list_head *pos, *n;
372 	struct saa7134_buf *tmp;
373 
374 	spin_lock_irqsave(&dev->slock, flags);
375 	if (!list_empty(&q->queue)) {
376 		list_for_each_safe(pos, n, &q->queue) {
377 			 tmp = list_entry(pos, struct saa7134_buf, entry);
378 			 vb2_buffer_done(&tmp->vb2, VB2_BUF_STATE_ERROR);
379 			 list_del(pos);
380 			 tmp = NULL;
381 		}
382 	}
383 	spin_unlock_irqrestore(&dev->slock, flags);
384 	saa7134_buffer_timeout((unsigned long)q); /* also calls del_timer(&q->timeout) */
385 }
386 EXPORT_SYMBOL_GPL(saa7134_stop_streaming);
387 
388 /* ------------------------------------------------------------------ */
389 
390 int saa7134_set_dmabits(struct saa7134_dev *dev)
391 {
392 	u32 split, task=0, ctrl=0, irq=0;
393 	enum v4l2_field cap = V4L2_FIELD_ANY;
394 	enum v4l2_field ov  = V4L2_FIELD_ANY;
395 
396 	assert_spin_locked(&dev->slock);
397 
398 	if (dev->insuspend)
399 		return 0;
400 
401 	/* video capture -- dma 0 + video task A */
402 	if (dev->video_q.curr) {
403 		task |= 0x01;
404 		ctrl |= SAA7134_MAIN_CTRL_TE0;
405 		irq  |= SAA7134_IRQ1_INTE_RA0_1 |
406 			SAA7134_IRQ1_INTE_RA0_0;
407 		cap = dev->field;
408 	}
409 
410 	/* video capture -- dma 1+2 (planar modes) */
411 	if (dev->video_q.curr && dev->fmt->planar) {
412 		ctrl |= SAA7134_MAIN_CTRL_TE4 |
413 			SAA7134_MAIN_CTRL_TE5;
414 	}
415 
416 	/* screen overlay -- dma 0 + video task B */
417 	if (dev->ovenable) {
418 		task |= 0x10;
419 		ctrl |= SAA7134_MAIN_CTRL_TE1;
420 		ov = dev->ovfield;
421 	}
422 
423 	/* vbi capture -- dma 0 + vbi task A+B */
424 	if (dev->vbi_q.curr) {
425 		task |= 0x22;
426 		ctrl |= SAA7134_MAIN_CTRL_TE2 |
427 			SAA7134_MAIN_CTRL_TE3;
428 		irq  |= SAA7134_IRQ1_INTE_RA0_7 |
429 			SAA7134_IRQ1_INTE_RA0_6 |
430 			SAA7134_IRQ1_INTE_RA0_5 |
431 			SAA7134_IRQ1_INTE_RA0_4;
432 	}
433 
434 	/* audio capture -- dma 3 */
435 	if (dev->dmasound.dma_running) {
436 		ctrl |= SAA7134_MAIN_CTRL_TE6;
437 		irq  |= SAA7134_IRQ1_INTE_RA3_1 |
438 			SAA7134_IRQ1_INTE_RA3_0;
439 	}
440 
441 	/* TS capture -- dma 5 */
442 	if (dev->ts_q.curr) {
443 		ctrl |= SAA7134_MAIN_CTRL_TE5;
444 		irq  |= SAA7134_IRQ1_INTE_RA2_1 |
445 			SAA7134_IRQ1_INTE_RA2_0;
446 	}
447 
448 	/* set task conditions + field handling */
449 	if (V4L2_FIELD_HAS_BOTH(cap) || V4L2_FIELD_HAS_BOTH(ov) || cap == ov) {
450 		/* default config -- use full frames */
451 		saa_writeb(SAA7134_TASK_CONDITIONS(TASK_A), 0x0d);
452 		saa_writeb(SAA7134_TASK_CONDITIONS(TASK_B), 0x0d);
453 		saa_writeb(SAA7134_FIELD_HANDLING(TASK_A),  0x02);
454 		saa_writeb(SAA7134_FIELD_HANDLING(TASK_B),  0x02);
455 		split = 0;
456 	} else {
457 		/* split fields between tasks */
458 		if (V4L2_FIELD_TOP == cap) {
459 			/* odd A, even B, repeat */
460 			saa_writeb(SAA7134_TASK_CONDITIONS(TASK_A), 0x0d);
461 			saa_writeb(SAA7134_TASK_CONDITIONS(TASK_B), 0x0e);
462 		} else {
463 			/* odd B, even A, repeat */
464 			saa_writeb(SAA7134_TASK_CONDITIONS(TASK_A), 0x0e);
465 			saa_writeb(SAA7134_TASK_CONDITIONS(TASK_B), 0x0d);
466 		}
467 		saa_writeb(SAA7134_FIELD_HANDLING(TASK_A),  0x01);
468 		saa_writeb(SAA7134_FIELD_HANDLING(TASK_B),  0x01);
469 		split = 1;
470 	}
471 
472 	/* irqs */
473 	saa_writeb(SAA7134_REGION_ENABLE, task);
474 	saa_writel(SAA7134_IRQ1,          irq);
475 	saa_andorl(SAA7134_MAIN_CTRL,
476 		   SAA7134_MAIN_CTRL_TE0 |
477 		   SAA7134_MAIN_CTRL_TE1 |
478 		   SAA7134_MAIN_CTRL_TE2 |
479 		   SAA7134_MAIN_CTRL_TE3 |
480 		   SAA7134_MAIN_CTRL_TE4 |
481 		   SAA7134_MAIN_CTRL_TE5 |
482 		   SAA7134_MAIN_CTRL_TE6,
483 		   ctrl);
484 	core_dbg("dmabits: task=0x%02x ctrl=0x%02x irq=0x%x split=%s\n",
485 		task, ctrl, irq, split ? "no" : "yes");
486 
487 	return 0;
488 }
489 
490 /* ------------------------------------------------------------------ */
491 /* IRQ handler + helpers                                              */
492 
493 static char *irqbits[] = {
494 	"DONE_RA0", "DONE_RA1", "DONE_RA2", "DONE_RA3",
495 	"AR", "PE", "PWR_ON", "RDCAP", "INTL", "FIDT", "MMC",
496 	"TRIG_ERR", "CONF_ERR", "LOAD_ERR",
497 	"GPIO16", "GPIO18", "GPIO22", "GPIO23"
498 };
499 #define IRQBITS ARRAY_SIZE(irqbits)
500 
501 static void print_irqstatus(struct saa7134_dev *dev, int loop,
502 			    unsigned long report, unsigned long status)
503 {
504 	unsigned int i;
505 
506 	irq_dbg(1, "[%d,%ld]: r=0x%lx s=0x%02lx",
507 		loop, jiffies, report, status);
508 	for (i = 0; i < IRQBITS; i++) {
509 		if (!(report & (1 << i)))
510 			continue;
511 		pr_cont(" %s", irqbits[i]);
512 	}
513 	if (report & SAA7134_IRQ_REPORT_DONE_RA0) {
514 		pr_cont(" | RA0=%s,%s,%s,%ld",
515 			(status & 0x40) ? "vbi"  : "video",
516 			(status & 0x20) ? "b"    : "a",
517 			(status & 0x10) ? "odd"  : "even",
518 			(status & 0x0f));
519 	}
520 	pr_cont("\n");
521 }
522 
523 static irqreturn_t saa7134_irq(int irq, void *dev_id)
524 {
525 	struct saa7134_dev *dev = (struct saa7134_dev*) dev_id;
526 	unsigned long report,status;
527 	int loop, handled = 0;
528 
529 	if (dev->insuspend)
530 		goto out;
531 
532 	for (loop = 0; loop < 10; loop++) {
533 		report = saa_readl(SAA7134_IRQ_REPORT);
534 		status = saa_readl(SAA7134_IRQ_STATUS);
535 
536 		/* If dmasound support is active and we get a sound report,
537 		 * mask out the report and let the saa7134-alsa module deal
538 		 * with it */
539 		if ((report & SAA7134_IRQ_REPORT_DONE_RA3) &&
540 			(dev->dmasound.priv_data != NULL) )
541 		{
542 			irq_dbg(2, "preserving DMA sound interrupt\n");
543 			report &= ~SAA7134_IRQ_REPORT_DONE_RA3;
544 		}
545 
546 		if (0 == report) {
547 			irq_dbg(2, "no (more) work\n");
548 			goto out;
549 		}
550 
551 		handled = 1;
552 		saa_writel(SAA7134_IRQ_REPORT,report);
553 		if (irq_debug)
554 			print_irqstatus(dev,loop,report,status);
555 
556 
557 		if ((report & SAA7134_IRQ_REPORT_RDCAP) ||
558 			(report & SAA7134_IRQ_REPORT_INTL))
559 				saa7134_irq_video_signalchange(dev);
560 
561 
562 		if ((report & SAA7134_IRQ_REPORT_DONE_RA0) &&
563 		    (status & 0x60) == 0)
564 			saa7134_irq_video_done(dev,status);
565 
566 		if ((report & SAA7134_IRQ_REPORT_DONE_RA0) &&
567 		    (status & 0x40) == 0x40)
568 			saa7134_irq_vbi_done(dev,status);
569 
570 		if ((report & SAA7134_IRQ_REPORT_DONE_RA2) &&
571 		    card_has_mpeg(dev)) {
572 			if (dev->mops->irq_ts_done != NULL)
573 				dev->mops->irq_ts_done(dev, status);
574 			else
575 				saa7134_irq_ts_done(dev, status);
576 		}
577 
578 		if (report & SAA7134_IRQ_REPORT_GPIO16) {
579 			switch (dev->has_remote) {
580 				case SAA7134_REMOTE_GPIO:
581 					if (!dev->remote)
582 						break;
583 					if  (dev->remote->mask_keydown & 0x10000) {
584 						saa7134_input_irq(dev);
585 					}
586 					break;
587 
588 				case SAA7134_REMOTE_I2C:
589 					break;			/* FIXME: invoke I2C get_key() */
590 
591 				default:			/* GPIO16 not used by IR remote */
592 					break;
593 			}
594 		}
595 
596 		if (report & SAA7134_IRQ_REPORT_GPIO18) {
597 			switch (dev->has_remote) {
598 				case SAA7134_REMOTE_GPIO:
599 					if (!dev->remote)
600 						break;
601 					if ((dev->remote->mask_keydown & 0x40000) ||
602 					    (dev->remote->mask_keyup & 0x40000)) {
603 						saa7134_input_irq(dev);
604 					}
605 					break;
606 
607 				case SAA7134_REMOTE_I2C:
608 					break;			/* FIXME: invoke I2C get_key() */
609 
610 				default:			/* GPIO18 not used by IR remote */
611 					break;
612 			}
613 		}
614 	}
615 
616 	if (10 == loop) {
617 		print_irqstatus(dev,loop,report,status);
618 		if (report & SAA7134_IRQ_REPORT_PE) {
619 			/* disable all parity error */
620 			pr_warn("%s/irq: looping -- "
621 			       "clearing PE (parity error!) enable bit\n",dev->name);
622 			saa_clearl(SAA7134_IRQ2,SAA7134_IRQ2_INTE_PE);
623 		} else if (report & SAA7134_IRQ_REPORT_GPIO16) {
624 			/* disable gpio16 IRQ */
625 			pr_warn("%s/irq: looping -- "
626 			       "clearing GPIO16 enable bit\n",dev->name);
627 			saa_clearl(SAA7134_IRQ2, SAA7134_IRQ2_INTE_GPIO16_P);
628 			saa_clearl(SAA7134_IRQ2, SAA7134_IRQ2_INTE_GPIO16_N);
629 		} else if (report & SAA7134_IRQ_REPORT_GPIO18) {
630 			/* disable gpio18 IRQs */
631 			pr_warn("%s/irq: looping -- "
632 			       "clearing GPIO18 enable bit\n",dev->name);
633 			saa_clearl(SAA7134_IRQ2, SAA7134_IRQ2_INTE_GPIO18_P);
634 			saa_clearl(SAA7134_IRQ2, SAA7134_IRQ2_INTE_GPIO18_N);
635 		} else {
636 			/* disable all irqs */
637 			pr_warn("%s/irq: looping -- "
638 			       "clearing all enable bits\n",dev->name);
639 			saa_writel(SAA7134_IRQ1,0);
640 			saa_writel(SAA7134_IRQ2,0);
641 		}
642 	}
643 
644  out:
645 	return IRQ_RETVAL(handled);
646 }
647 
648 /* ------------------------------------------------------------------ */
649 
650 /* early init (no i2c, no irq) */
651 
652 static int saa7134_hw_enable1(struct saa7134_dev *dev)
653 {
654 	/* RAM FIFO config */
655 	saa_writel(SAA7134_FIFO_SIZE, 0x08070503);
656 	saa_writel(SAA7134_THRESHOULD, 0x02020202);
657 
658 	/* enable audio + video processing */
659 	saa_writel(SAA7134_MAIN_CTRL,
660 			SAA7134_MAIN_CTRL_VPLLE |
661 			SAA7134_MAIN_CTRL_APLLE |
662 			SAA7134_MAIN_CTRL_EXOSC |
663 			SAA7134_MAIN_CTRL_EVFE1 |
664 			SAA7134_MAIN_CTRL_EVFE2 |
665 			SAA7134_MAIN_CTRL_ESFE  |
666 			SAA7134_MAIN_CTRL_EBDAC);
667 
668 	/*
669 	* Initialize OSS _after_ enabling audio clock PLL and audio processing.
670 	* OSS initialization writes to registers via the audio DSP; these
671 	* writes will fail unless the audio clock has been started.  At worst,
672 	* audio will not work.
673 	*/
674 
675 	/* enable peripheral devices */
676 	saa_writeb(SAA7134_SPECIAL_MODE, 0x01);
677 
678 	/* set vertical line numbering start (vbi needs this) */
679 	saa_writeb(SAA7134_SOURCE_TIMING2, 0x20);
680 
681 	return 0;
682 }
683 
684 static int saa7134_hwinit1(struct saa7134_dev *dev)
685 {
686 	core_dbg("hwinit1\n");
687 
688 	saa_writel(SAA7134_IRQ1, 0);
689 	saa_writel(SAA7134_IRQ2, 0);
690 
691 	/* Clear any stale IRQ reports */
692 	saa_writel(SAA7134_IRQ_REPORT, saa_readl(SAA7134_IRQ_REPORT));
693 
694 	mutex_init(&dev->lock);
695 	spin_lock_init(&dev->slock);
696 
697 	saa7134_track_gpio(dev,"pre-init");
698 	saa7134_video_init1(dev);
699 	saa7134_vbi_init1(dev);
700 	if (card_has_mpeg(dev))
701 		saa7134_ts_init1(dev);
702 	saa7134_input_init1(dev);
703 
704 	saa7134_hw_enable1(dev);
705 
706 	return 0;
707 }
708 
709 /* late init (with i2c + irq) */
710 static int saa7134_hw_enable2(struct saa7134_dev *dev)
711 {
712 
713 	unsigned int irq2_mask;
714 
715 	/* enable IRQ's */
716 	irq2_mask =
717 		SAA7134_IRQ2_INTE_DEC3    |
718 		SAA7134_IRQ2_INTE_DEC2    |
719 		SAA7134_IRQ2_INTE_DEC1    |
720 		SAA7134_IRQ2_INTE_DEC0    |
721 		SAA7134_IRQ2_INTE_PE      |
722 		SAA7134_IRQ2_INTE_AR;
723 
724 	if (dev->has_remote == SAA7134_REMOTE_GPIO && dev->remote) {
725 		if (dev->remote->mask_keydown & 0x10000)
726 			irq2_mask |= SAA7134_IRQ2_INTE_GPIO16_N;
727 		else {		/* Allow enabling both IRQ edge triggers */
728 			if (dev->remote->mask_keydown & 0x40000)
729 				irq2_mask |= SAA7134_IRQ2_INTE_GPIO18_P;
730 			if (dev->remote->mask_keyup & 0x40000)
731 				irq2_mask |= SAA7134_IRQ2_INTE_GPIO18_N;
732 		}
733 	}
734 
735 	if (dev->has_remote == SAA7134_REMOTE_I2C) {
736 		request_module("ir-kbd-i2c");
737 	}
738 
739 	saa_writel(SAA7134_IRQ1, 0);
740 	saa_writel(SAA7134_IRQ2, irq2_mask);
741 
742 	return 0;
743 }
744 
745 static int saa7134_hwinit2(struct saa7134_dev *dev)
746 {
747 
748 	core_dbg("hwinit2\n");
749 
750 	saa7134_video_init2(dev);
751 	saa7134_tvaudio_init2(dev);
752 
753 	saa7134_hw_enable2(dev);
754 
755 	return 0;
756 }
757 
758 
759 /* shutdown */
760 static int saa7134_hwfini(struct saa7134_dev *dev)
761 {
762 	core_dbg("hwfini\n");
763 
764 	if (card_has_mpeg(dev))
765 		saa7134_ts_fini(dev);
766 	saa7134_input_fini(dev);
767 	saa7134_vbi_fini(dev);
768 	saa7134_tvaudio_fini(dev);
769 	saa7134_video_fini(dev);
770 	return 0;
771 }
772 
773 static void must_configure_manually(int has_eeprom)
774 {
775 	unsigned int i,p;
776 
777 	if (!has_eeprom)
778 		pr_warn("saa7134: <rant>\n"
779 			"saa7134:  Congratulations!  Your TV card vendor saved a few\n"
780 			"saa7134:  cents for a eeprom, thus your pci board has no\n"
781 			"saa7134:  subsystem ID and I can't identify it automatically\n"
782 			"saa7134: </rant>\n"
783 			"saa7134: I feel better now.  Ok, here are the good news:\n"
784 			"saa7134: You can use the card=<nr> insmod option to specify\n"
785 			"saa7134: which board do you have.  The list:\n");
786 	else
787 		pr_warn("saa7134: Board is currently unknown. You might try to use the card=<nr>\n"
788 			"saa7134: insmod option to specify which board do you have, but this is\n"
789 			"saa7134: somewhat risky, as might damage your card. It is better to ask\n"
790 			"saa7134: for support at linux-media@vger.kernel.org.\n"
791 			"saa7134: The supported cards are:\n");
792 
793 	for (i = 0; i < saa7134_bcount; i++) {
794 		pr_warn("saa7134:   card=%d -> %-40.40s",
795 		       i,saa7134_boards[i].name);
796 		for (p = 0; saa7134_pci_tbl[p].driver_data; p++) {
797 			if (saa7134_pci_tbl[p].driver_data != i)
798 				continue;
799 			pr_cont(" %04x:%04x",
800 			       saa7134_pci_tbl[p].subvendor,
801 			       saa7134_pci_tbl[p].subdevice);
802 		}
803 		pr_cont("\n");
804 	}
805 }
806 
807 static struct video_device *vdev_init(struct saa7134_dev *dev,
808 				      struct video_device *template,
809 				      char *type)
810 {
811 	struct video_device *vfd;
812 
813 	vfd = video_device_alloc();
814 	if (NULL == vfd)
815 		return NULL;
816 	*vfd = *template;
817 	vfd->v4l2_dev  = &dev->v4l2_dev;
818 	vfd->release = video_device_release;
819 	snprintf(vfd->name, sizeof(vfd->name), "%s %s (%s)",
820 		 dev->name, type, saa7134_boards[dev->board].name);
821 	video_set_drvdata(vfd, dev);
822 	return vfd;
823 }
824 
825 static void saa7134_unregister_video(struct saa7134_dev *dev)
826 {
827 	if (dev->video_dev) {
828 		if (video_is_registered(dev->video_dev))
829 			video_unregister_device(dev->video_dev);
830 		else
831 			video_device_release(dev->video_dev);
832 		dev->video_dev = NULL;
833 	}
834 	if (dev->vbi_dev) {
835 		if (video_is_registered(dev->vbi_dev))
836 			video_unregister_device(dev->vbi_dev);
837 		else
838 			video_device_release(dev->vbi_dev);
839 		dev->vbi_dev = NULL;
840 	}
841 	if (dev->radio_dev) {
842 		if (video_is_registered(dev->radio_dev))
843 			video_unregister_device(dev->radio_dev);
844 		else
845 			video_device_release(dev->radio_dev);
846 		dev->radio_dev = NULL;
847 	}
848 }
849 
850 static void mpeg_ops_attach(struct saa7134_mpeg_ops *ops,
851 			    struct saa7134_dev *dev)
852 {
853 	int err;
854 
855 	if (NULL != dev->mops)
856 		return;
857 	if (saa7134_boards[dev->board].mpeg != ops->type)
858 		return;
859 	err = ops->init(dev);
860 	if (0 != err)
861 		return;
862 	dev->mops = ops;
863 }
864 
865 static void mpeg_ops_detach(struct saa7134_mpeg_ops *ops,
866 			    struct saa7134_dev *dev)
867 {
868 	if (NULL == dev->mops)
869 		return;
870 	if (dev->mops != ops)
871 		return;
872 	dev->mops->fini(dev);
873 	dev->mops = NULL;
874 }
875 
876 static int saa7134_initdev(struct pci_dev *pci_dev,
877 			   const struct pci_device_id *pci_id)
878 {
879 	struct saa7134_dev *dev;
880 	struct saa7134_mpeg_ops *mops;
881 	int err;
882 
883 	if (saa7134_devcount == SAA7134_MAXBOARDS)
884 		return -ENOMEM;
885 
886 	dev = kzalloc(sizeof(*dev),GFP_KERNEL);
887 	if (NULL == dev)
888 		return -ENOMEM;
889 
890 	err = v4l2_device_register(&pci_dev->dev, &dev->v4l2_dev);
891 	if (err)
892 		goto fail0;
893 
894 	/* pci init */
895 	dev->pci = pci_dev;
896 	if (pci_enable_device(pci_dev)) {
897 		err = -EIO;
898 		goto fail1;
899 	}
900 
901 	dev->nr = saa7134_devcount;
902 	sprintf(dev->name,"saa%x[%d]",pci_dev->device,dev->nr);
903 
904 	/* pci quirks */
905 	if (pci_pci_problems) {
906 		if (pci_pci_problems & PCIPCI_TRITON)
907 			pr_info("%s: quirk: PCIPCI_TRITON\n", dev->name);
908 		if (pci_pci_problems & PCIPCI_NATOMA)
909 			pr_info("%s: quirk: PCIPCI_NATOMA\n", dev->name);
910 		if (pci_pci_problems & PCIPCI_VIAETBF)
911 			pr_info("%s: quirk: PCIPCI_VIAETBF\n", dev->name);
912 		if (pci_pci_problems & PCIPCI_VSFX)
913 			pr_info("%s: quirk: PCIPCI_VSFX\n", dev->name);
914 #ifdef PCIPCI_ALIMAGIK
915 		if (pci_pci_problems & PCIPCI_ALIMAGIK) {
916 			pr_info("%s: quirk: PCIPCI_ALIMAGIK -- latency fixup\n",
917 			       dev->name);
918 			latency = 0x0A;
919 		}
920 #endif
921 		if (pci_pci_problems & (PCIPCI_FAIL|PCIAGP_FAIL)) {
922 			pr_info("%s: quirk: this driver and your "
923 					"chipset may not work together"
924 					" in overlay mode.\n",dev->name);
925 			if (!saa7134_no_overlay) {
926 				pr_info("%s: quirk: overlay "
927 						"mode will be disabled.\n",
928 						dev->name);
929 				saa7134_no_overlay = 1;
930 			} else {
931 				pr_info("%s: quirk: overlay "
932 						"mode will be forced. Use this"
933 						" option at your own risk.\n",
934 						dev->name);
935 			}
936 		}
937 	}
938 	if (UNSET != latency) {
939 		pr_info("%s: setting pci latency timer to %d\n",
940 		       dev->name,latency);
941 		pci_write_config_byte(pci_dev, PCI_LATENCY_TIMER, latency);
942 	}
943 
944 	/* print pci info */
945 	dev->pci_rev = pci_dev->revision;
946 	pci_read_config_byte(pci_dev, PCI_LATENCY_TIMER,  &dev->pci_lat);
947 	pr_info("%s: found at %s, rev: %d, irq: %d, "
948 	       "latency: %d, mmio: 0x%llx\n", dev->name,
949 	       pci_name(pci_dev), dev->pci_rev, pci_dev->irq,
950 	       dev->pci_lat,(unsigned long long)pci_resource_start(pci_dev,0));
951 	pci_set_master(pci_dev);
952 	if (!pci_dma_supported(pci_dev, DMA_BIT_MASK(32))) {
953 		pr_warn("%s: Oops: no 32bit PCI DMA ???\n", dev->name);
954 		err = -EIO;
955 		goto fail1;
956 	}
957 
958 	/* board config */
959 	dev->board = pci_id->driver_data;
960 	if ((unsigned)card[dev->nr] < saa7134_bcount)
961 		dev->board = card[dev->nr];
962 	if (SAA7134_BOARD_UNKNOWN == dev->board)
963 		must_configure_manually(0);
964 	else if (SAA7134_BOARD_NOAUTO == dev->board) {
965 		must_configure_manually(1);
966 		dev->board = SAA7134_BOARD_UNKNOWN;
967 	}
968 	dev->autodetected = card[dev->nr] != dev->board;
969 	dev->tuner_type = saa7134_boards[dev->board].tuner_type;
970 	dev->tuner_addr = saa7134_boards[dev->board].tuner_addr;
971 	dev->radio_type = saa7134_boards[dev->board].radio_type;
972 	dev->radio_addr = saa7134_boards[dev->board].radio_addr;
973 	dev->tda9887_conf = saa7134_boards[dev->board].tda9887_conf;
974 	if (UNSET != tuner[dev->nr])
975 		dev->tuner_type = tuner[dev->nr];
976 	pr_info("%s: subsystem: %04x:%04x, board: %s [card=%d,%s]\n",
977 		dev->name,pci_dev->subsystem_vendor,
978 		pci_dev->subsystem_device,saa7134_boards[dev->board].name,
979 		dev->board, dev->autodetected ?
980 		"autodetected" : "insmod option");
981 
982 	/* get mmio */
983 	if (!request_mem_region(pci_resource_start(pci_dev,0),
984 				pci_resource_len(pci_dev,0),
985 				dev->name)) {
986 		err = -EBUSY;
987 		pr_err("%s: can't get MMIO memory @ 0x%llx\n",
988 		       dev->name,(unsigned long long)pci_resource_start(pci_dev,0));
989 		goto fail1;
990 	}
991 	dev->lmmio = ioremap(pci_resource_start(pci_dev, 0),
992 			     pci_resource_len(pci_dev, 0));
993 	dev->bmmio = (__u8 __iomem *)dev->lmmio;
994 	if (NULL == dev->lmmio) {
995 		err = -EIO;
996 		pr_err("%s: can't ioremap() MMIO memory\n",
997 		       dev->name);
998 		goto fail2;
999 	}
1000 
1001 	/* initialize hardware #1 */
1002 	saa7134_board_init1(dev);
1003 	saa7134_hwinit1(dev);
1004 
1005 	dev->alloc_ctx = vb2_dma_sg_init_ctx(&pci_dev->dev);
1006 	if (IS_ERR(dev->alloc_ctx)) {
1007 		err = PTR_ERR(dev->alloc_ctx);
1008 		goto fail3;
1009 	}
1010 	/* get irq */
1011 	err = request_irq(pci_dev->irq, saa7134_irq,
1012 			  IRQF_SHARED, dev->name, dev);
1013 	if (err < 0) {
1014 		pr_err("%s: can't get IRQ %d\n",
1015 		       dev->name,pci_dev->irq);
1016 		goto fail4;
1017 	}
1018 
1019 	/* wait a bit, register i2c bus */
1020 	msleep(100);
1021 	saa7134_i2c_register(dev);
1022 	saa7134_board_init2(dev);
1023 
1024 	saa7134_hwinit2(dev);
1025 
1026 	/* load i2c helpers */
1027 	if (card_is_empress(dev)) {
1028 		dev->empress_sd =
1029 			v4l2_i2c_new_subdev(&dev->v4l2_dev, &dev->i2c_adap,
1030 				"saa6752hs",
1031 				saa7134_boards[dev->board].empress_addr, NULL);
1032 
1033 		if (dev->empress_sd)
1034 			dev->empress_sd->grp_id = GRP_EMPRESS;
1035 	}
1036 
1037 	if (saa7134_boards[dev->board].rds_addr) {
1038 		struct v4l2_subdev *sd;
1039 
1040 		sd = v4l2_i2c_new_subdev(&dev->v4l2_dev,
1041 				&dev->i2c_adap, "saa6588",
1042 				0, I2C_ADDRS(saa7134_boards[dev->board].rds_addr));
1043 		if (sd) {
1044 			pr_info("%s: found RDS decoder\n", dev->name);
1045 			dev->has_rds = 1;
1046 		}
1047 	}
1048 
1049 	mutex_lock(&saa7134_devlist_lock);
1050 	list_for_each_entry(mops, &mops_list, next)
1051 		mpeg_ops_attach(mops, dev);
1052 	list_add_tail(&dev->devlist, &saa7134_devlist);
1053 	mutex_unlock(&saa7134_devlist_lock);
1054 
1055 	/* check for signal */
1056 	saa7134_irq_video_signalchange(dev);
1057 
1058 	if (TUNER_ABSENT != dev->tuner_type)
1059 		saa_call_all(dev, core, s_power, 0);
1060 
1061 	/* register v4l devices */
1062 	if (saa7134_no_overlay > 0)
1063 		pr_info("%s: Overlay support disabled.\n", dev->name);
1064 
1065 	dev->video_dev = vdev_init(dev,&saa7134_video_template,"video");
1066 	dev->video_dev->ctrl_handler = &dev->ctrl_handler;
1067 	dev->video_dev->lock = &dev->lock;
1068 	dev->video_dev->queue = &dev->video_vbq;
1069 	err = video_register_device(dev->video_dev,VFL_TYPE_GRABBER,
1070 				    video_nr[dev->nr]);
1071 	if (err < 0) {
1072 		pr_info("%s: can't register video device\n",
1073 		       dev->name);
1074 		goto fail5;
1075 	}
1076 	pr_info("%s: registered device %s [v4l2]\n",
1077 	       dev->name, video_device_node_name(dev->video_dev));
1078 
1079 	dev->vbi_dev = vdev_init(dev, &saa7134_video_template, "vbi");
1080 	dev->vbi_dev->ctrl_handler = &dev->ctrl_handler;
1081 	dev->vbi_dev->lock = &dev->lock;
1082 	dev->vbi_dev->queue = &dev->vbi_vbq;
1083 
1084 	err = video_register_device(dev->vbi_dev,VFL_TYPE_VBI,
1085 				    vbi_nr[dev->nr]);
1086 	if (err < 0)
1087 		goto fail5;
1088 	pr_info("%s: registered device %s\n",
1089 	       dev->name, video_device_node_name(dev->vbi_dev));
1090 
1091 	if (card_has_radio(dev)) {
1092 		dev->radio_dev = vdev_init(dev,&saa7134_radio_template,"radio");
1093 		dev->radio_dev->ctrl_handler = &dev->radio_ctrl_handler;
1094 		dev->radio_dev->lock = &dev->lock;
1095 		err = video_register_device(dev->radio_dev,VFL_TYPE_RADIO,
1096 					    radio_nr[dev->nr]);
1097 		if (err < 0)
1098 			goto fail5;
1099 		pr_info("%s: registered device %s\n",
1100 		       dev->name, video_device_node_name(dev->radio_dev));
1101 	}
1102 
1103 	/* everything worked */
1104 	saa7134_devcount++;
1105 
1106 	if (saa7134_dmasound_init && !dev->dmasound.priv_data)
1107 		saa7134_dmasound_init(dev);
1108 
1109 	request_submodules(dev);
1110 	return 0;
1111 
1112  fail5:
1113 	saa7134_unregister_video(dev);
1114 	saa7134_i2c_unregister(dev);
1115 	free_irq(pci_dev->irq, dev);
1116  fail4:
1117 	vb2_dma_sg_cleanup_ctx(dev->alloc_ctx);
1118  fail3:
1119 	saa7134_hwfini(dev);
1120 	iounmap(dev->lmmio);
1121  fail2:
1122 	release_mem_region(pci_resource_start(pci_dev,0),
1123 			   pci_resource_len(pci_dev,0));
1124  fail1:
1125 	v4l2_device_unregister(&dev->v4l2_dev);
1126  fail0:
1127 	kfree(dev);
1128 	return err;
1129 }
1130 
1131 static void saa7134_finidev(struct pci_dev *pci_dev)
1132 {
1133 	struct v4l2_device *v4l2_dev = pci_get_drvdata(pci_dev);
1134 	struct saa7134_dev *dev = container_of(v4l2_dev, struct saa7134_dev, v4l2_dev);
1135 	struct saa7134_mpeg_ops *mops;
1136 
1137 	flush_request_submodules(dev);
1138 
1139 	/* Release DMA sound modules if present */
1140 	if (saa7134_dmasound_exit && dev->dmasound.priv_data) {
1141 		saa7134_dmasound_exit(dev);
1142 	}
1143 
1144 	/* debugging ... */
1145 	if (irq_debug) {
1146 		u32 report = saa_readl(SAA7134_IRQ_REPORT);
1147 		u32 status = saa_readl(SAA7134_IRQ_STATUS);
1148 		print_irqstatus(dev,42,report,status);
1149 	}
1150 
1151 	/* disable peripheral devices */
1152 	saa_writeb(SAA7134_SPECIAL_MODE,0);
1153 
1154 	/* shutdown hardware */
1155 	saa_writel(SAA7134_IRQ1,0);
1156 	saa_writel(SAA7134_IRQ2,0);
1157 	saa_writel(SAA7134_MAIN_CTRL,0);
1158 
1159 	/* shutdown subsystems */
1160 	saa7134_hwfini(dev);
1161 
1162 	/* unregister */
1163 	mutex_lock(&saa7134_devlist_lock);
1164 	list_del(&dev->devlist);
1165 	list_for_each_entry(mops, &mops_list, next)
1166 		mpeg_ops_detach(mops, dev);
1167 	mutex_unlock(&saa7134_devlist_lock);
1168 	saa7134_devcount--;
1169 
1170 	saa7134_i2c_unregister(dev);
1171 	saa7134_unregister_video(dev);
1172 
1173 
1174 	/* the DMA sound modules should be unloaded before reaching
1175 	   this, but just in case they are still present... */
1176 	if (dev->dmasound.priv_data != NULL) {
1177 		free_irq(pci_dev->irq, &dev->dmasound);
1178 		dev->dmasound.priv_data = NULL;
1179 	}
1180 
1181 
1182 	/* release resources */
1183 	free_irq(pci_dev->irq, dev);
1184 	vb2_dma_sg_cleanup_ctx(dev->alloc_ctx);
1185 	iounmap(dev->lmmio);
1186 	release_mem_region(pci_resource_start(pci_dev,0),
1187 			   pci_resource_len(pci_dev,0));
1188 
1189 
1190 	v4l2_device_unregister(&dev->v4l2_dev);
1191 
1192 	/* free memory */
1193 	kfree(dev);
1194 }
1195 
1196 #ifdef CONFIG_PM
1197 
1198 /* resends a current buffer in queue after resume */
1199 static int saa7134_buffer_requeue(struct saa7134_dev *dev,
1200 				  struct saa7134_dmaqueue *q)
1201 {
1202 	struct saa7134_buf *buf, *next;
1203 
1204 	assert_spin_locked(&dev->slock);
1205 
1206 	buf  = q->curr;
1207 	next = buf;
1208 	core_dbg("buffer_requeue\n");
1209 
1210 	if (!buf)
1211 		return 0;
1212 
1213 	core_dbg("buffer_requeue : resending active buffer\n");
1214 
1215 	if (!list_empty(&q->queue))
1216 		next = list_entry(q->queue.next, struct saa7134_buf,
1217 					  entry);
1218 	buf->activate(dev, buf, next);
1219 
1220 	return 0;
1221 }
1222 
1223 static int saa7134_suspend(struct pci_dev *pci_dev , pm_message_t state)
1224 {
1225 	struct v4l2_device *v4l2_dev = pci_get_drvdata(pci_dev);
1226 	struct saa7134_dev *dev = container_of(v4l2_dev, struct saa7134_dev, v4l2_dev);
1227 
1228 	/* disable overlay - apps should enable it explicitly on resume*/
1229 	dev->ovenable = 0;
1230 
1231 	/* Disable interrupts, DMA, and rest of the chip*/
1232 	saa_writel(SAA7134_IRQ1, 0);
1233 	saa_writel(SAA7134_IRQ2, 0);
1234 	saa_writel(SAA7134_MAIN_CTRL, 0);
1235 
1236 	dev->insuspend = 1;
1237 	synchronize_irq(pci_dev->irq);
1238 
1239 	/* ACK interrupts once more, just in case,
1240 		since the IRQ handler won't ack them anymore*/
1241 
1242 	saa_writel(SAA7134_IRQ_REPORT, saa_readl(SAA7134_IRQ_REPORT));
1243 
1244 	/* Disable timeout timers - if we have active buffers, we will
1245 	   fill them on resume*/
1246 
1247 	del_timer(&dev->video_q.timeout);
1248 	del_timer(&dev->vbi_q.timeout);
1249 	del_timer(&dev->ts_q.timeout);
1250 
1251 	if (dev->remote)
1252 		saa7134_ir_stop(dev);
1253 
1254 	pci_save_state(pci_dev);
1255 	pci_set_power_state(pci_dev, pci_choose_state(pci_dev, state));
1256 
1257 	return 0;
1258 }
1259 
1260 static int saa7134_resume(struct pci_dev *pci_dev)
1261 {
1262 	struct v4l2_device *v4l2_dev = pci_get_drvdata(pci_dev);
1263 	struct saa7134_dev *dev = container_of(v4l2_dev, struct saa7134_dev, v4l2_dev);
1264 	unsigned long flags;
1265 
1266 	pci_set_power_state(pci_dev, PCI_D0);
1267 	pci_restore_state(pci_dev);
1268 
1269 	/* Do things that are done in saa7134_initdev ,
1270 		except of initializing memory structures.*/
1271 
1272 	saa7134_board_init1(dev);
1273 
1274 	/* saa7134_hwinit1 */
1275 	if (saa7134_boards[dev->board].video_out)
1276 		saa7134_videoport_init(dev);
1277 	if (card_has_mpeg(dev))
1278 		saa7134_ts_init_hw(dev);
1279 	if (dev->remote)
1280 		saa7134_ir_start(dev);
1281 	saa7134_hw_enable1(dev);
1282 
1283 	msleep(100);
1284 
1285 	saa7134_board_init2(dev);
1286 
1287 	/*saa7134_hwinit2*/
1288 	saa7134_set_tvnorm_hw(dev);
1289 	saa7134_tvaudio_setmute(dev);
1290 	saa7134_tvaudio_setvolume(dev, dev->ctl_volume);
1291 	saa7134_tvaudio_init(dev);
1292 	saa7134_enable_i2s(dev);
1293 	saa7134_hw_enable2(dev);
1294 
1295 	saa7134_irq_video_signalchange(dev);
1296 
1297 	/*resume unfinished buffer(s)*/
1298 	spin_lock_irqsave(&dev->slock, flags);
1299 	saa7134_buffer_requeue(dev, &dev->video_q);
1300 	saa7134_buffer_requeue(dev, &dev->vbi_q);
1301 	saa7134_buffer_requeue(dev, &dev->ts_q);
1302 
1303 	/* FIXME: Disable DMA audio sound - temporary till proper support
1304 		  is implemented*/
1305 
1306 	dev->dmasound.dma_running = 0;
1307 
1308 	/* start DMA now*/
1309 	dev->insuspend = 0;
1310 	smp_wmb();
1311 	saa7134_set_dmabits(dev);
1312 	spin_unlock_irqrestore(&dev->slock, flags);
1313 
1314 	return 0;
1315 }
1316 #endif
1317 
1318 /* ----------------------------------------------------------- */
1319 
1320 int saa7134_ts_register(struct saa7134_mpeg_ops *ops)
1321 {
1322 	struct saa7134_dev *dev;
1323 
1324 	mutex_lock(&saa7134_devlist_lock);
1325 	list_for_each_entry(dev, &saa7134_devlist, devlist)
1326 		mpeg_ops_attach(ops, dev);
1327 	list_add_tail(&ops->next,&mops_list);
1328 	mutex_unlock(&saa7134_devlist_lock);
1329 	return 0;
1330 }
1331 
1332 void saa7134_ts_unregister(struct saa7134_mpeg_ops *ops)
1333 {
1334 	struct saa7134_dev *dev;
1335 
1336 	mutex_lock(&saa7134_devlist_lock);
1337 	list_del(&ops->next);
1338 	list_for_each_entry(dev, &saa7134_devlist, devlist)
1339 		mpeg_ops_detach(ops, dev);
1340 	mutex_unlock(&saa7134_devlist_lock);
1341 }
1342 
1343 EXPORT_SYMBOL(saa7134_ts_register);
1344 EXPORT_SYMBOL(saa7134_ts_unregister);
1345 
1346 /* ----------------------------------------------------------- */
1347 
1348 static struct pci_driver saa7134_pci_driver = {
1349 	.name     = "saa7134",
1350 	.id_table = saa7134_pci_tbl,
1351 	.probe    = saa7134_initdev,
1352 	.remove   = saa7134_finidev,
1353 #ifdef CONFIG_PM
1354 	.suspend  = saa7134_suspend,
1355 	.resume   = saa7134_resume
1356 #endif
1357 };
1358 
1359 static int __init saa7134_init(void)
1360 {
1361 	INIT_LIST_HEAD(&saa7134_devlist);
1362 	pr_info("saa7130/34: v4l2 driver version %s loaded\n",
1363 	       SAA7134_VERSION);
1364 	return pci_register_driver(&saa7134_pci_driver);
1365 }
1366 
1367 static void __exit saa7134_fini(void)
1368 {
1369 	pci_unregister_driver(&saa7134_pci_driver);
1370 }
1371 
1372 module_init(saa7134_init);
1373 module_exit(saa7134_fini);
1374 
1375 /* ----------------------------------------------------------- */
1376 
1377 EXPORT_SYMBOL(saa7134_set_gpio);
1378 EXPORT_SYMBOL(saa7134_boards);
1379 
1380 /* ----------------- for the DMA sound modules --------------- */
1381 
1382 EXPORT_SYMBOL(saa7134_dmasound_init);
1383 EXPORT_SYMBOL(saa7134_dmasound_exit);
1384 EXPORT_SYMBOL(saa7134_pgtable_free);
1385 EXPORT_SYMBOL(saa7134_pgtable_build);
1386 EXPORT_SYMBOL(saa7134_pgtable_alloc);
1387 EXPORT_SYMBOL(saa7134_set_dmabits);
1388