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PM / sleep: Asynchronous threads for suspend_noirq
[linux/fpc-iii.git] / drivers / media / pci / ttpci / budget-core.c
blob37d02fe091376977840455a555038587dda0e9aa
1 /*
2 * budget-core.c: driver for the SAA7146 based Budget DVB cards
3 *
4 * Compiled from various sources by Michael Hunold <michael@mihu.de>
5 *
6 * Copyright (C) 2002 Ralph Metzler <rjkm@metzlerbros.de>
7 *
8 * Copyright (C) 1999-2002 Ralph Metzler
9 * & Marcus Metzler for convergence integrated media GmbH
10 *
11 * 26feb2004 Support for FS Activy Card (Grundig tuner) by
12 * Michael Dreher <michael@5dot1.de>,
13 * Oliver Endriss <o.endriss@gmx.de>,
14 * Andreas 'randy' Weinberger
15 *
16 * This program is free software; you can redistribute it and/or
17 * modify it under the terms of the GNU General Public License
18 * as published by the Free Software Foundation; either version 2
19 * of the License, or (at your option) any later version.
20 *
21 *
22 * This program is distributed in the hope that it will be useful,
23 * but WITHOUT ANY WARRANTY; without even the implied warranty of
24 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25 * GNU General Public License for more details.
26 *
27 *
28 * You should have received a copy of the GNU General Public License
29 * along with this program; if not, write to the Free Software
30 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
31 * Or, point your browser to http://www.gnu.org/copyleft/gpl.html
32 *
33 *
34 * the project's page is at http://www.linuxtv.org/
35 */
36
37
38 #include "budget.h"
39 #include "ttpci-eeprom.h"
40
41 #define TS_WIDTH (2 * TS_SIZE)
42 #define TS_WIDTH_ACTIVY TS_SIZE
43 #define TS_WIDTH_DVBC TS_SIZE
44 #define TS_HEIGHT_MASK 0xf00
45 #define TS_HEIGHT_MASK_ACTIVY 0xc00
46 #define TS_HEIGHT_MASK_DVBC 0xe00
47 #define TS_MIN_BUFSIZE_K 188
48 #define TS_MAX_BUFSIZE_K 1410
49 #define TS_MAX_BUFSIZE_K_ACTIVY 564
50 #define TS_MAX_BUFSIZE_K_DVBC 1316
51 #define BUFFER_WARNING_WAIT (30*HZ)
52
53 int budget_debug;
54 static int dma_buffer_size = TS_MIN_BUFSIZE_K;
55 module_param_named(debug, budget_debug, int, 0644);
56 module_param_named(bufsize, dma_buffer_size, int, 0444);
57 MODULE_PARM_DESC(debug, "Turn on/off budget debugging (default:off).");
58 MODULE_PARM_DESC(bufsize, "DMA buffer size in KB, default: 188, min: 188, max: 1410 (Activy: 564)");
59
60 /****************************************************************************
61 * TT budget / WinTV Nova
62 ****************************************************************************/
63
64 static int stop_ts_capture(struct budget *budget)
65 {
66 dprintk(2, "budget: %p\n", budget);
67
68 saa7146_write(budget->dev, MC1, MASK_20); // DMA3 off
69 SAA7146_IER_DISABLE(budget->dev, MASK_10);
70 return 0;
71 }
72
73 static int start_ts_capture(struct budget *budget)
74 {
75 struct saa7146_dev *dev = budget->dev;
76
77 dprintk(2, "budget: %p\n", budget);
78
79 if (!budget->feeding || !budget->fe_synced)
80 return 0;
81
82 saa7146_write(dev, MC1, MASK_20); // DMA3 off
83
84 memset(budget->grabbing, 0x00, budget->buffer_size);
85
86 saa7146_write(dev, PCI_BT_V1, 0x001c0000 | (saa7146_read(dev, PCI_BT_V1) & ~0x001f0000));
87
88 budget->ttbp = 0;
89
90 /*
91 * Signal path on the Activy:
92 *
93 * tuner -> SAA7146 port A -> SAA7146 BRS -> SAA7146 DMA3 -> memory
94 *
95 * Since the tuner feeds 204 bytes packets into the SAA7146,
96 * DMA3 is configured to strip the trailing 16 FEC bytes:
97 * Pitch: 188, NumBytes3: 188, NumLines3: 1024
98 */
99
100 switch(budget->card->type) {
101 case BUDGET_FS_ACTIVY:
102 saa7146_write(dev, DD1_INIT, 0x04000000);
103 saa7146_write(dev, MC2, (MASK_09 | MASK_25));
104 saa7146_write(dev, BRS_CTRL, 0x00000000);
105 break;
106 case BUDGET_PATCH:
107 saa7146_write(dev, DD1_INIT, 0x00000200);
108 saa7146_write(dev, MC2, (MASK_10 | MASK_26));
109 saa7146_write(dev, BRS_CTRL, 0x60000000);
110 break;
111 case BUDGET_CIN1200C_MK3:
112 case BUDGET_KNC1C_MK3:
113 case BUDGET_KNC1C_TDA10024:
114 case BUDGET_KNC1CP_MK3:
115 if (budget->video_port == BUDGET_VIDEO_PORTA) {
116 saa7146_write(dev, DD1_INIT, 0x06000200);
117 saa7146_write(dev, MC2, (MASK_09 | MASK_25 | MASK_10 | MASK_26));
118 saa7146_write(dev, BRS_CTRL, 0x00000000);
119 } else {
120 saa7146_write(dev, DD1_INIT, 0x00000600);
121 saa7146_write(dev, MC2, (MASK_09 | MASK_25 | MASK_10 | MASK_26));
122 saa7146_write(dev, BRS_CTRL, 0x60000000);
123 }
124 break;
125 default:
126 if (budget->video_port == BUDGET_VIDEO_PORTA) {
127 saa7146_write(dev, DD1_INIT, 0x06000200);
128 saa7146_write(dev, MC2, (MASK_09 | MASK_25 | MASK_10 | MASK_26));
129 saa7146_write(dev, BRS_CTRL, 0x00000000);
130 } else {
131 saa7146_write(dev, DD1_INIT, 0x02000600);
132 saa7146_write(dev, MC2, (MASK_09 | MASK_25 | MASK_10 | MASK_26));
133 saa7146_write(dev, BRS_CTRL, 0x60000000);
134 }
135 }
136
137 saa7146_write(dev, MC2, (MASK_08 | MASK_24));
138 mdelay(10);
139
140 saa7146_write(dev, BASE_ODD3, 0);
141 if (budget->buffer_size > budget->buffer_height * budget->buffer_width) {
142 // using odd/even buffers
143 saa7146_write(dev, BASE_EVEN3, budget->buffer_height * budget->buffer_width);
144 } else {
145 // using a single buffer
146 saa7146_write(dev, BASE_EVEN3, 0);
147 }
148 saa7146_write(dev, PROT_ADDR3, budget->buffer_size);
149 saa7146_write(dev, BASE_PAGE3, budget->pt.dma | ME1 | 0x90);
150
151 saa7146_write(dev, PITCH3, budget->buffer_width);
152 saa7146_write(dev, NUM_LINE_BYTE3,
153 (budget->buffer_height << 16) | budget->buffer_width);
154
155 saa7146_write(dev, MC2, (MASK_04 | MASK_20));
156
157 SAA7146_ISR_CLEAR(budget->dev, MASK_10); /* VPE */
158 SAA7146_IER_ENABLE(budget->dev, MASK_10); /* VPE */
159 saa7146_write(dev, MC1, (MASK_04 | MASK_20)); /* DMA3 on */
160
161 return 0;
162 }
163
164 static int budget_read_fe_status(struct dvb_frontend *fe, fe_status_t *status)
165 {
166 struct budget *budget = (struct budget *) fe->dvb->priv;
167 int synced;
168 int ret;
169
170 if (budget->read_fe_status)
171 ret = budget->read_fe_status(fe, status);
172 else
173 ret = -EINVAL;
174
175 if (!ret) {
176 synced = (*status & FE_HAS_LOCK);
177 if (synced != budget->fe_synced) {
178 budget->fe_synced = synced;
179 spin_lock(&budget->feedlock);
180 if (synced)
181 start_ts_capture(budget);
182 else
183 stop_ts_capture(budget);
184 spin_unlock(&budget->feedlock);
185 }
186 }
187 return ret;
188 }
189
190 static void vpeirq(unsigned long data)
191 {
192 struct budget *budget = (struct budget *) data;
193 u8 *mem = (u8 *) (budget->grabbing);
194 u32 olddma = budget->ttbp;
195 u32 newdma = saa7146_read(budget->dev, PCI_VDP3);
196 u32 count;
197
198 /* Ensure streamed PCI data is synced to CPU */
199 pci_dma_sync_sg_for_cpu(budget->dev->pci, budget->pt.slist, budget->pt.nents, PCI_DMA_FROMDEVICE);
200
201 /* nearest lower position divisible by 188 */
202 newdma -= newdma % 188;
203
204 if (newdma >= budget->buffer_size)
205 return;
206
207 budget->ttbp = newdma;
208
209 if (budget->feeding == 0 || newdma == olddma)
210 return;
211
212 if (newdma > olddma) { /* no wraparound, dump olddma..newdma */
213 count = newdma - olddma;
214 dvb_dmx_swfilter_packets(&budget->demux, mem + olddma, count / 188);
215 } else { /* wraparound, dump olddma..buflen and 0..newdma */
216 count = budget->buffer_size - olddma;
217 dvb_dmx_swfilter_packets(&budget->demux, mem + olddma, count / 188);
218 count += newdma;
219 dvb_dmx_swfilter_packets(&budget->demux, mem, newdma / 188);
220 }
221
222 if (count > budget->buffer_warning_threshold)
223 budget->buffer_warnings++;
224
225 if (budget->buffer_warnings && time_after(jiffies, budget->buffer_warning_time)) {
226 printk("%s %s: used %d times >80%% of buffer (%u bytes now)\n",
227 budget->dev->name, __func__, budget->buffer_warnings, count);
228 budget->buffer_warning_time = jiffies + BUFFER_WARNING_WAIT;
229 budget->buffer_warnings = 0;
230 }
231 }
232
233
234 int ttpci_budget_debiread(struct budget *budget, u32 config, int addr, int count,
235 int uselocks, int nobusyloop)
236 {
237 struct saa7146_dev *saa = budget->dev;
238 int result = 0;
239 unsigned long flags = 0;
240
241 if (count > 4 || count <= 0)
242 return 0;
243
244 if (uselocks)
245 spin_lock_irqsave(&budget->debilock, flags);
246
247 if ((result = saa7146_wait_for_debi_done(saa, nobusyloop)) < 0) {
248 if (uselocks)
249 spin_unlock_irqrestore(&budget->debilock, flags);
250 return result;
251 }
252
253 saa7146_write(saa, DEBI_COMMAND, (count << 17) | 0x10000 | (addr & 0xffff));
254 saa7146_write(saa, DEBI_CONFIG, config);
255 saa7146_write(saa, DEBI_PAGE, 0);
256 saa7146_write(saa, MC2, (2 << 16) | 2);
257
258 if ((result = saa7146_wait_for_debi_done(saa, nobusyloop)) < 0) {
259 if (uselocks)
260 spin_unlock_irqrestore(&budget->debilock, flags);
261 return result;
262 }
263
264 result = saa7146_read(saa, DEBI_AD);
265 result &= (0xffffffffUL >> ((4 - count) * 8));
266
267 if (uselocks)
268 spin_unlock_irqrestore(&budget->debilock, flags);
269
270 return result;
271 }
272
273 int ttpci_budget_debiwrite(struct budget *budget, u32 config, int addr,
274 int count, u32 value, int uselocks, int nobusyloop)
275 {
276 struct saa7146_dev *saa = budget->dev;
277 unsigned long flags = 0;
278 int result;
279
280 if (count > 4 || count <= 0)
281 return 0;
282
283 if (uselocks)
284 spin_lock_irqsave(&budget->debilock, flags);
285
286 if ((result = saa7146_wait_for_debi_done(saa, nobusyloop)) < 0) {
287 if (uselocks)
288 spin_unlock_irqrestore(&budget->debilock, flags);
289 return result;
290 }
291
292 saa7146_write(saa, DEBI_COMMAND, (count << 17) | 0x00000 | (addr & 0xffff));
293 saa7146_write(saa, DEBI_CONFIG, config);
294 saa7146_write(saa, DEBI_PAGE, 0);
295 saa7146_write(saa, DEBI_AD, value);
296 saa7146_write(saa, MC2, (2 << 16) | 2);
297
298 if ((result = saa7146_wait_for_debi_done(saa, nobusyloop)) < 0) {
299 if (uselocks)
300 spin_unlock_irqrestore(&budget->debilock, flags);
301 return result;
302 }
303
304 if (uselocks)
305 spin_unlock_irqrestore(&budget->debilock, flags);
306 return 0;
307 }
308
309
310 /****************************************************************************
311 * DVB API SECTION
312 ****************************************************************************/
313
314 static int budget_start_feed(struct dvb_demux_feed *feed)
315 {
316 struct dvb_demux *demux = feed->demux;
317 struct budget *budget = (struct budget *) demux->priv;
318 int status = 0;
319
320 dprintk(2, "budget: %p\n", budget);
321
322 if (!demux->dmx.frontend)
323 return -EINVAL;
324
325 spin_lock(&budget->feedlock);
326 feed->pusi_seen = 0; /* have a clean section start */
327 if (budget->feeding++ == 0)
328 status = start_ts_capture(budget);
329 spin_unlock(&budget->feedlock);
330 return status;
331 }
332
333 static int budget_stop_feed(struct dvb_demux_feed *feed)
334 {
335 struct dvb_demux *demux = feed->demux;
336 struct budget *budget = (struct budget *) demux->priv;
337 int status = 0;
338
339 dprintk(2, "budget: %p\n", budget);
340
341 spin_lock(&budget->feedlock);
342 if (--budget->feeding == 0)
343 status = stop_ts_capture(budget);
344 spin_unlock(&budget->feedlock);
345 return status;
346 }
347
348 static int budget_register(struct budget *budget)
349 {
350 struct dvb_demux *dvbdemux = &budget->demux;
351 int ret;
352
353 dprintk(2, "budget: %p\n", budget);
354
355 dvbdemux->priv = (void *) budget;
356
357 dvbdemux->filternum = 256;
358 dvbdemux->feednum = 256;
359 dvbdemux->start_feed = budget_start_feed;
360 dvbdemux->stop_feed = budget_stop_feed;
361 dvbdemux->write_to_decoder = NULL;
362
363 dvbdemux->dmx.capabilities = (DMX_TS_FILTERING | DMX_SECTION_FILTERING |
364 DMX_MEMORY_BASED_FILTERING);
365
366 dvb_dmx_init(&budget->demux);
367
368 budget->dmxdev.filternum = 256;
369 budget->dmxdev.demux = &dvbdemux->dmx;
370 budget->dmxdev.capabilities = 0;
371
372 dvb_dmxdev_init(&budget->dmxdev, &budget->dvb_adapter);
373
374 budget->hw_frontend.source = DMX_FRONTEND_0;
375
376 ret = dvbdemux->dmx.add_frontend(&dvbdemux->dmx, &budget->hw_frontend);
377
378 if (ret < 0)
379 return ret;
380
381 budget->mem_frontend.source = DMX_MEMORY_FE;
382 ret = dvbdemux->dmx.add_frontend(&dvbdemux->dmx, &budget->mem_frontend);
383 if (ret < 0)
384 return ret;
385
386 ret = dvbdemux->dmx.connect_frontend(&dvbdemux->dmx, &budget->hw_frontend);
387 if (ret < 0)
388 return ret;
389
390 dvb_net_init(&budget->dvb_adapter, &budget->dvb_net, &dvbdemux->dmx);
391
392 return 0;
393 }
394
395 static void budget_unregister(struct budget *budget)
396 {
397 struct dvb_demux *dvbdemux = &budget->demux;
398
399 dprintk(2, "budget: %p\n", budget);
400
401 dvb_net_release(&budget->dvb_net);
402
403 dvbdemux->dmx.close(&dvbdemux->dmx);
404 dvbdemux->dmx.remove_frontend(&dvbdemux->dmx, &budget->hw_frontend);
405 dvbdemux->dmx.remove_frontend(&dvbdemux->dmx, &budget->mem_frontend);
406
407 dvb_dmxdev_release(&budget->dmxdev);
408 dvb_dmx_release(&budget->demux);
409 }
410
411 int ttpci_budget_init(struct budget *budget, struct saa7146_dev *dev,
412 struct saa7146_pci_extension_data *info,
413 struct module *owner, short *adapter_nums)
414 {
415 int ret = 0;
416 struct budget_info *bi = info->ext_priv;
417 int max_bufsize;
418 int height_mask;
419
420 memset(budget, 0, sizeof(struct budget));
421
422 dprintk(2, "dev: %p, budget: %p\n", dev, budget);
423
424 budget->card = bi;
425 budget->dev = (struct saa7146_dev *) dev;
426
427 switch(budget->card->type) {
428 case BUDGET_FS_ACTIVY:
429 budget->buffer_width = TS_WIDTH_ACTIVY;
430 max_bufsize = TS_MAX_BUFSIZE_K_ACTIVY;
431 height_mask = TS_HEIGHT_MASK_ACTIVY;
432 break;
433
434 case BUDGET_KNC1C:
435 case BUDGET_KNC1CP:
436 case BUDGET_CIN1200C:
437 case BUDGET_KNC1C_MK3:
438 case BUDGET_KNC1C_TDA10024:
439 case BUDGET_KNC1CP_MK3:
440 case BUDGET_CIN1200C_MK3:
441 budget->buffer_width = TS_WIDTH_DVBC;
442 max_bufsize = TS_MAX_BUFSIZE_K_DVBC;
443 height_mask = TS_HEIGHT_MASK_DVBC;
444 break;
445
446 default:
447 budget->buffer_width = TS_WIDTH;
448 max_bufsize = TS_MAX_BUFSIZE_K;
449 height_mask = TS_HEIGHT_MASK;
450 }
451
452 if (dma_buffer_size < TS_MIN_BUFSIZE_K)
453 dma_buffer_size = TS_MIN_BUFSIZE_K;
454 else if (dma_buffer_size > max_bufsize)
455 dma_buffer_size = max_bufsize;
456
457 budget->buffer_height = dma_buffer_size * 1024 / budget->buffer_width;
458 if (budget->buffer_height > 0xfff) {
459 budget->buffer_height /= 2;
460 budget->buffer_height &= height_mask;
461 budget->buffer_size = 2 * budget->buffer_height * budget->buffer_width;
462 } else {
463 budget->buffer_height &= height_mask;
464 budget->buffer_size = budget->buffer_height * budget->buffer_width;
465 }
466 budget->buffer_warning_threshold = budget->buffer_size * 80/100;
467 budget->buffer_warnings = 0;
468 budget->buffer_warning_time = jiffies;
469
470 dprintk(2, "%s: buffer type = %s, width = %d, height = %d\n",
471 budget->dev->name,
472 budget->buffer_size > budget->buffer_width * budget->buffer_height ? "odd/even" : "single",
473 budget->buffer_width, budget->buffer_height);
474 printk("%s: dma buffer size %u\n", budget->dev->name, budget->buffer_size);
475
476 ret = dvb_register_adapter(&budget->dvb_adapter, budget->card->name,
477 owner, &budget->dev->pci->dev, adapter_nums);
478 if (ret < 0)
479 return ret;
480
481 /* set dd1 stream a & b */
482 saa7146_write(dev, DD1_STREAM_B, 0x00000000);
483 saa7146_write(dev, MC2, (MASK_09 | MASK_25));
484 saa7146_write(dev, MC2, (MASK_10 | MASK_26));
485 saa7146_write(dev, DD1_INIT, 0x02000000);
486 saa7146_write(dev, MC2, (MASK_09 | MASK_25 | MASK_10 | MASK_26));
487
488 if (bi->type != BUDGET_FS_ACTIVY)
489 budget->video_port = BUDGET_VIDEO_PORTB;
490 else
491 budget->video_port = BUDGET_VIDEO_PORTA;
492 spin_lock_init(&budget->feedlock);
493 spin_lock_init(&budget->debilock);
494
495 /* the Siemens DVB needs this if you want to have the i2c chips
496 get recognized before the main driver is loaded */
497 if (bi->type != BUDGET_FS_ACTIVY)
498 saa7146_write(dev, GPIO_CTRL, 0x500000); /* GPIO 3 = 1 */
499
500 strlcpy(budget->i2c_adap.name, budget->card->name, sizeof(budget->i2c_adap.name));
501
502 saa7146_i2c_adapter_prepare(dev, &budget->i2c_adap, SAA7146_I2C_BUS_BIT_RATE_120);
503 strcpy(budget->i2c_adap.name, budget->card->name);
504
505 if (i2c_add_adapter(&budget->i2c_adap) < 0) {
506 ret = -ENOMEM;
507 goto err_dvb_unregister;
508 }
509
510 ttpci_eeprom_parse_mac(&budget->i2c_adap, budget->dvb_adapter.proposed_mac);
511
512 budget->grabbing = saa7146_vmalloc_build_pgtable(dev->pci, budget->buffer_size, &budget->pt);
513 if (NULL == budget->grabbing) {
514 ret = -ENOMEM;
515 goto err_del_i2c;
516 }
517
518 saa7146_write(dev, PCI_BT_V1, 0x001c0000);
519 /* upload all */
520 saa7146_write(dev, GPIO_CTRL, 0x000000);
521
522 tasklet_init(&budget->vpe_tasklet, vpeirq, (unsigned long) budget);
523
524 /* frontend power on */
525 if (bi->type != BUDGET_FS_ACTIVY)
526 saa7146_setgpio(dev, 2, SAA7146_GPIO_OUTHI);
527
528 if ((ret = budget_register(budget)) == 0)
529 return 0; /* Everything OK */
530
531 /* An error occurred, cleanup resources */
532 saa7146_vfree_destroy_pgtable(dev->pci, budget->grabbing, &budget->pt);
533
534 err_del_i2c:
535 i2c_del_adapter(&budget->i2c_adap);
536
537 err_dvb_unregister:
538 dvb_unregister_adapter(&budget->dvb_adapter);
539
540 return ret;
541 }
542
543 void ttpci_budget_init_hooks(struct budget *budget)
544 {
545 if (budget->dvb_frontend && !budget->read_fe_status) {
546 budget->read_fe_status = budget->dvb_frontend->ops.read_status;
547 budget->dvb_frontend->ops.read_status = budget_read_fe_status;
548 }
549 }
550
551 int ttpci_budget_deinit(struct budget *budget)
552 {
553 struct saa7146_dev *dev = budget->dev;
554
555 dprintk(2, "budget: %p\n", budget);
556
557 budget_unregister(budget);
558
559 tasklet_kill(&budget->vpe_tasklet);
560
561 saa7146_vfree_destroy_pgtable(dev->pci, budget->grabbing, &budget->pt);
562
563 i2c_del_adapter(&budget->i2c_adap);
564
565 dvb_unregister_adapter(&budget->dvb_adapter);
566
567 return 0;
568 }
569
570 void ttpci_budget_irq10_handler(struct saa7146_dev *dev, u32 * isr)
571 {
572 struct budget *budget = (struct budget *) dev->ext_priv;
573
574 dprintk(8, "dev: %p, budget: %p\n", dev, budget);
575
576 if (*isr & MASK_10)
577 tasklet_schedule(&budget->vpe_tasklet);
578 }
579
580 void ttpci_budget_set_video_port(struct saa7146_dev *dev, int video_port)
581 {
582 struct budget *budget = (struct budget *) dev->ext_priv;
583
584 spin_lock(&budget->feedlock);
585 budget->video_port = video_port;
586 if (budget->feeding) {
587 stop_ts_capture(budget);
588 start_ts_capture(budget);
589 }
590 spin_unlock(&budget->feedlock);
591 }
592
593 EXPORT_SYMBOL_GPL(ttpci_budget_debiread);
594 EXPORT_SYMBOL_GPL(ttpci_budget_debiwrite);
595 EXPORT_SYMBOL_GPL(ttpci_budget_init);
596 EXPORT_SYMBOL_GPL(ttpci_budget_init_hooks);
597 EXPORT_SYMBOL_GPL(ttpci_budget_deinit);
598 EXPORT_SYMBOL_GPL(ttpci_budget_irq10_handler);
599 EXPORT_SYMBOL_GPL(ttpci_budget_set_video_port);
600 EXPORT_SYMBOL_GPL(budget_debug);
601
602 MODULE_LICENSE("GPL");
Linux with added FPC-III support