1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3  * budget-core.c: driver for the SAA7146 based Budget DVB cards
4  *
5  * Compiled from various sources by Michael Hunold <michael@mihu.de>
6  *
7  * Copyright (C) 2002 Ralph Metzler <rjkm@metzlerbros.de>
8  *
9  * Copyright (C) 1999-2002 Ralph  Metzler
10  *			 & Marcus Metzler for convergence integrated media GmbH
11  *
12  * 26feb2004 Support for FS Activy Card (Grundig tuner) by
13  *	     Michael Dreher <michael@5dot1.de>,
14  *	     Oliver Endriss <o.endriss@gmx.de>,
15  *	     Andreas 'randy' Weinberger
16  *
17  * the project's page is at https://linuxtv.org
18  */
19 
20 
21 #include "budget.h"
22 #include "ttpci-eeprom.h"
23 
24 #define TS_WIDTH		(2 * TS_SIZE)
25 #define TS_WIDTH_ACTIVY		TS_SIZE
26 #define TS_WIDTH_DVBC		TS_SIZE
27 #define TS_HEIGHT_MASK		0xf00
28 #define TS_HEIGHT_MASK_ACTIVY	0xc00
29 #define TS_HEIGHT_MASK_DVBC	0xe00
30 #define TS_MIN_BUFSIZE_K	188
31 #define TS_MAX_BUFSIZE_K	1410
32 #define TS_MAX_BUFSIZE_K_ACTIVY	564
33 #define TS_MAX_BUFSIZE_K_DVBC	1316
34 #define BUFFER_WARNING_WAIT	(30*HZ)
35 
36 int budget_debug;
37 static int dma_buffer_size = TS_MIN_BUFSIZE_K;
38 module_param_named(debug, budget_debug, int, 0644);
39 module_param_named(bufsize, dma_buffer_size, int, 0444);
40 MODULE_PARM_DESC(debug, "Turn on/off budget debugging (default:off).");
41 MODULE_PARM_DESC(bufsize, "DMA buffer size in KB, default: 188, min: 188, max: 1410 (Activy: 564)");
42 
43 /****************************************************************************
44  * TT budget / WinTV Nova
45  ****************************************************************************/
46 
47 static int stop_ts_capture(struct budget *budget)
48 {
49 	dprintk(2, "budget: %p\n", budget);
50 
51 	saa7146_write(budget->dev, MC1, MASK_20);	// DMA3 off
52 	SAA7146_IER_DISABLE(budget->dev, MASK_10);
53 	return 0;
54 }
55 
56 static int start_ts_capture(struct budget *budget)
57 {
58 	struct saa7146_dev *dev = budget->dev;
59 
60 	dprintk(2, "budget: %p\n", budget);
61 
62 	if (!budget->feeding || !budget->fe_synced)
63 		return 0;
64 
65 	saa7146_write(dev, MC1, MASK_20);	// DMA3 off
66 
67 	memset(budget->grabbing, 0x00, budget->buffer_size);
68 
69 	saa7146_write(dev, PCI_BT_V1, 0x001c0000 | (saa7146_read(dev, PCI_BT_V1) & ~0x001f0000));
70 
71 	budget->ttbp = 0;
72 
73 	/*
74 	 *  Signal path on the Activy:
75 	 *
76 	 *  tuner -> SAA7146 port A -> SAA7146 BRS -> SAA7146 DMA3 -> memory
77 	 *
78 	 *  Since the tuner feeds 204 bytes packets into the SAA7146,
79 	 *  DMA3 is configured to strip the trailing 16 FEC bytes:
80 	 *      Pitch: 188, NumBytes3: 188, NumLines3: 1024
81 	 */
82 
83 	switch(budget->card->type) {
84 	case BUDGET_FS_ACTIVY:
85 		saa7146_write(dev, DD1_INIT, 0x04000000);
86 		saa7146_write(dev, MC2, (MASK_09 | MASK_25));
87 		saa7146_write(dev, BRS_CTRL, 0x00000000);
88 		break;
89 	case BUDGET_PATCH:
90 		saa7146_write(dev, DD1_INIT, 0x00000200);
91 		saa7146_write(dev, MC2, (MASK_10 | MASK_26));
92 		saa7146_write(dev, BRS_CTRL, 0x60000000);
93 		break;
94 	case BUDGET_CIN1200C_MK3:
95 	case BUDGET_KNC1C_MK3:
96 	case BUDGET_KNC1C_TDA10024:
97 	case BUDGET_KNC1CP_MK3:
98 		if (budget->video_port == BUDGET_VIDEO_PORTA) {
99 			saa7146_write(dev, DD1_INIT, 0x06000200);
100 			saa7146_write(dev, MC2, (MASK_09 | MASK_25 | MASK_10 | MASK_26));
101 			saa7146_write(dev, BRS_CTRL, 0x00000000);
102 		} else {
103 			saa7146_write(dev, DD1_INIT, 0x00000600);
104 			saa7146_write(dev, MC2, (MASK_09 | MASK_25 | MASK_10 | MASK_26));
105 			saa7146_write(dev, BRS_CTRL, 0x60000000);
106 		}
107 		break;
108 	default:
109 		if (budget->video_port == BUDGET_VIDEO_PORTA) {
110 			saa7146_write(dev, DD1_INIT, 0x06000200);
111 			saa7146_write(dev, MC2, (MASK_09 | MASK_25 | MASK_10 | MASK_26));
112 			saa7146_write(dev, BRS_CTRL, 0x00000000);
113 		} else {
114 			saa7146_write(dev, DD1_INIT, 0x02000600);
115 			saa7146_write(dev, MC2, (MASK_09 | MASK_25 | MASK_10 | MASK_26));
116 			saa7146_write(dev, BRS_CTRL, 0x60000000);
117 		}
118 	}
119 
120 	saa7146_write(dev, MC2, (MASK_08 | MASK_24));
121 	mdelay(10);
122 
123 	saa7146_write(dev, BASE_ODD3, 0);
124 	if (budget->buffer_size > budget->buffer_height * budget->buffer_width) {
125 		// using odd/even buffers
126 		saa7146_write(dev, BASE_EVEN3, budget->buffer_height * budget->buffer_width);
127 	} else {
128 		// using a single buffer
129 		saa7146_write(dev, BASE_EVEN3, 0);
130 	}
131 	saa7146_write(dev, PROT_ADDR3, budget->buffer_size);
132 	saa7146_write(dev, BASE_PAGE3, budget->pt.dma | ME1 | 0x90);
133 
134 	saa7146_write(dev, PITCH3, budget->buffer_width);
135 	saa7146_write(dev, NUM_LINE_BYTE3,
136 			(budget->buffer_height << 16) | budget->buffer_width);
137 
138 	saa7146_write(dev, MC2, (MASK_04 | MASK_20));
139 
140 	SAA7146_ISR_CLEAR(budget->dev, MASK_10);	/* VPE */
141 	SAA7146_IER_ENABLE(budget->dev, MASK_10);	/* VPE */
142 	saa7146_write(dev, MC1, (MASK_04 | MASK_20));	/* DMA3 on */
143 
144 	return 0;
145 }
146 
147 static int budget_read_fe_status(struct dvb_frontend *fe,
148 				 enum fe_status *status)
149 {
150 	struct budget *budget = fe->dvb->priv;
151 	int synced;
152 	int ret;
153 
154 	if (budget->read_fe_status)
155 		ret = budget->read_fe_status(fe, status);
156 	else
157 		ret = -EINVAL;
158 
159 	if (!ret) {
160 		synced = (*status & FE_HAS_LOCK);
161 		if (synced != budget->fe_synced) {
162 			budget->fe_synced = synced;
163 			spin_lock(&budget->feedlock);
164 			if (synced)
165 				start_ts_capture(budget);
166 			else
167 				stop_ts_capture(budget);
168 			spin_unlock(&budget->feedlock);
169 		}
170 	}
171 	return ret;
172 }
173 
174 static void vpeirq(struct tasklet_struct *t)
175 {
176 	struct budget *budget = from_tasklet(budget, t, vpe_tasklet);
177 	u8 *mem = (u8 *) (budget->grabbing);
178 	u32 olddma = budget->ttbp;
179 	u32 newdma = saa7146_read(budget->dev, PCI_VDP3);
180 	u32 count;
181 
182 	/* Ensure streamed PCI data is synced to CPU */
183 	dma_sync_sg_for_cpu(&budget->dev->pci->dev, budget->pt.slist,
184 			    budget->pt.nents, DMA_FROM_DEVICE);
185 
186 	/* nearest lower position divisible by 188 */
187 	newdma -= newdma % 188;
188 
189 	if (newdma >= budget->buffer_size)
190 		return;
191 
192 	budget->ttbp = newdma;
193 
194 	if (budget->feeding == 0 || newdma == olddma)
195 		return;
196 
197 	if (newdma > olddma) {	/* no wraparound, dump olddma..newdma */
198 		count = newdma - olddma;
199 		dvb_dmx_swfilter_packets(&budget->demux, mem + olddma, count / 188);
200 	} else {		/* wraparound, dump olddma..buflen and 0..newdma */
201 		count = budget->buffer_size - olddma;
202 		dvb_dmx_swfilter_packets(&budget->demux, mem + olddma, count / 188);
203 		count += newdma;
204 		dvb_dmx_swfilter_packets(&budget->demux, mem, newdma / 188);
205 	}
206 
207 	if (count > budget->buffer_warning_threshold)
208 		budget->buffer_warnings++;
209 
210 	if (budget->buffer_warnings && time_after(jiffies, budget->buffer_warning_time)) {
211 		printk("%s %s: used %d times >80%% of buffer (%u bytes now)\n",
212 			budget->dev->name, __func__, budget->buffer_warnings, count);
213 		budget->buffer_warning_time = jiffies + BUFFER_WARNING_WAIT;
214 		budget->buffer_warnings = 0;
215 	}
216 }
217 
218 
219 static int ttpci_budget_debiread_nolock(struct budget *budget, u32 config,
220 		int addr, int count, int nobusyloop)
221 {
222 	struct saa7146_dev *saa = budget->dev;
223 	int result;
224 
225 	result = saa7146_wait_for_debi_done(saa, nobusyloop);
226 	if (result < 0)
227 		return result;
228 
229 	saa7146_write(saa, DEBI_COMMAND, (count << 17) | 0x10000 | (addr & 0xffff));
230 	saa7146_write(saa, DEBI_CONFIG, config);
231 	saa7146_write(saa, DEBI_PAGE, 0);
232 	saa7146_write(saa, MC2, (2 << 16) | 2);
233 
234 	result = saa7146_wait_for_debi_done(saa, nobusyloop);
235 	if (result < 0)
236 		return result;
237 
238 	result = saa7146_read(saa, DEBI_AD);
239 	result &= (0xffffffffUL >> ((4 - count) * 8));
240 	return result;
241 }
242 
243 int ttpci_budget_debiread(struct budget *budget, u32 config, int addr, int count,
244 			  int uselocks, int nobusyloop)
245 {
246 	if (count > 4 || count <= 0)
247 		return 0;
248 
249 	if (uselocks) {
250 		unsigned long flags;
251 		int result;
252 
253 		spin_lock_irqsave(&budget->debilock, flags);
254 		result = ttpci_budget_debiread_nolock(budget, config, addr,
255 						      count, nobusyloop);
256 		spin_unlock_irqrestore(&budget->debilock, flags);
257 		return result;
258 	}
259 	return ttpci_budget_debiread_nolock(budget, config, addr,
260 					    count, nobusyloop);
261 }
262 
263 static int ttpci_budget_debiwrite_nolock(struct budget *budget, u32 config,
264 		int addr, int count, u32 value, int nobusyloop)
265 {
266 	struct saa7146_dev *saa = budget->dev;
267 	int result;
268 
269 	result = saa7146_wait_for_debi_done(saa, nobusyloop);
270 	if (result < 0)
271 		return result;
272 
273 	saa7146_write(saa, DEBI_COMMAND, (count << 17) | 0x00000 | (addr & 0xffff));
274 	saa7146_write(saa, DEBI_CONFIG, config);
275 	saa7146_write(saa, DEBI_PAGE, 0);
276 	saa7146_write(saa, DEBI_AD, value);
277 	saa7146_write(saa, MC2, (2 << 16) | 2);
278 
279 	result = saa7146_wait_for_debi_done(saa, nobusyloop);
280 	return result < 0 ? result : 0;
281 }
282 
283 int ttpci_budget_debiwrite(struct budget *budget, u32 config, int addr,
284 			   int count, u32 value, int uselocks, int nobusyloop)
285 {
286 	if (count > 4 || count <= 0)
287 		return 0;
288 
289 	if (uselocks) {
290 		unsigned long flags;
291 		int result;
292 
293 		spin_lock_irqsave(&budget->debilock, flags);
294 		result = ttpci_budget_debiwrite_nolock(budget, config, addr,
295 						count, value, nobusyloop);
296 		spin_unlock_irqrestore(&budget->debilock, flags);
297 		return result;
298 	}
299 	return ttpci_budget_debiwrite_nolock(budget, config, addr,
300 					     count, value, nobusyloop);
301 }
302 
303 
304 /****************************************************************************
305  * DVB API SECTION
306  ****************************************************************************/
307 
308 static int budget_start_feed(struct dvb_demux_feed *feed)
309 {
310 	struct dvb_demux *demux = feed->demux;
311 	struct budget *budget = demux->priv;
312 	int status = 0;
313 
314 	dprintk(2, "budget: %p\n", budget);
315 
316 	if (!demux->dmx.frontend)
317 		return -EINVAL;
318 
319 	spin_lock(&budget->feedlock);
320 	feed->pusi_seen = false; /* have a clean section start */
321 	if (budget->feeding++ == 0)
322 		status = start_ts_capture(budget);
323 	spin_unlock(&budget->feedlock);
324 	return status;
325 }
326 
327 static int budget_stop_feed(struct dvb_demux_feed *feed)
328 {
329 	struct dvb_demux *demux = feed->demux;
330 	struct budget *budget = demux->priv;
331 	int status = 0;
332 
333 	dprintk(2, "budget: %p\n", budget);
334 
335 	spin_lock(&budget->feedlock);
336 	if (--budget->feeding == 0)
337 		status = stop_ts_capture(budget);
338 	spin_unlock(&budget->feedlock);
339 	return status;
340 }
341 
342 static int budget_register(struct budget *budget)
343 {
344 	struct dvb_demux *dvbdemux = &budget->demux;
345 	int ret;
346 
347 	dprintk(2, "budget: %p\n", budget);
348 
349 	dvbdemux->priv = (void *) budget;
350 
351 	dvbdemux->filternum = 256;
352 	dvbdemux->feednum = 256;
353 	dvbdemux->start_feed = budget_start_feed;
354 	dvbdemux->stop_feed = budget_stop_feed;
355 	dvbdemux->write_to_decoder = NULL;
356 
357 	dvbdemux->dmx.capabilities = (DMX_TS_FILTERING | DMX_SECTION_FILTERING |
358 				      DMX_MEMORY_BASED_FILTERING);
359 
360 	dvb_dmx_init(&budget->demux);
361 
362 	budget->dmxdev.filternum = 256;
363 	budget->dmxdev.demux = &dvbdemux->dmx;
364 	budget->dmxdev.capabilities = 0;
365 
366 	dvb_dmxdev_init(&budget->dmxdev, &budget->dvb_adapter);
367 
368 	budget->hw_frontend.source = DMX_FRONTEND_0;
369 
370 	ret = dvbdemux->dmx.add_frontend(&dvbdemux->dmx, &budget->hw_frontend);
371 
372 	if (ret < 0)
373 		goto err_release_dmx;
374 
375 	budget->mem_frontend.source = DMX_MEMORY_FE;
376 	ret = dvbdemux->dmx.add_frontend(&dvbdemux->dmx, &budget->mem_frontend);
377 	if (ret < 0)
378 		goto err_release_dmx;
379 
380 	ret = dvbdemux->dmx.connect_frontend(&dvbdemux->dmx, &budget->hw_frontend);
381 	if (ret < 0)
382 		goto err_release_dmx;
383 
384 	dvb_net_init(&budget->dvb_adapter, &budget->dvb_net, &dvbdemux->dmx);
385 
386 	return 0;
387 
388 err_release_dmx:
389 	dvb_dmxdev_release(&budget->dmxdev);
390 	dvb_dmx_release(&budget->demux);
391 	return ret;
392 }
393 
394 static void budget_unregister(struct budget *budget)
395 {
396 	struct dvb_demux *dvbdemux = &budget->demux;
397 
398 	dprintk(2, "budget: %p\n", budget);
399 
400 	dvb_net_release(&budget->dvb_net);
401 
402 	dvbdemux->dmx.close(&dvbdemux->dmx);
403 	dvbdemux->dmx.remove_frontend(&dvbdemux->dmx, &budget->hw_frontend);
404 	dvbdemux->dmx.remove_frontend(&dvbdemux->dmx, &budget->mem_frontend);
405 
406 	dvb_dmxdev_release(&budget->dmxdev);
407 	dvb_dmx_release(&budget->demux);
408 }
409 
410 int ttpci_budget_init(struct budget *budget, struct saa7146_dev *dev,
411 		      struct saa7146_pci_extension_data *info,
412 		      struct module *owner, short *adapter_nums)
413 {
414 	int ret = 0;
415 	struct budget_info *bi = info->ext_priv;
416 	int max_bufsize;
417 	int height_mask;
418 
419 	memset(budget, 0, sizeof(struct budget));
420 
421 	dprintk(2, "dev: %p, budget: %p\n", dev, budget);
422 
423 	budget->card = bi;
424 	budget->dev = (struct saa7146_dev *) dev;
425 
426 	switch(budget->card->type) {
427 	case BUDGET_FS_ACTIVY:
428 		budget->buffer_width = TS_WIDTH_ACTIVY;
429 		max_bufsize = TS_MAX_BUFSIZE_K_ACTIVY;
430 		height_mask = TS_HEIGHT_MASK_ACTIVY;
431 		break;
432 
433 	case BUDGET_KNC1C:
434 	case BUDGET_KNC1CP:
435 	case BUDGET_CIN1200C:
436 	case BUDGET_KNC1C_MK3:
437 	case BUDGET_KNC1C_TDA10024:
438 	case BUDGET_KNC1CP_MK3:
439 	case BUDGET_CIN1200C_MK3:
440 		budget->buffer_width = TS_WIDTH_DVBC;
441 		max_bufsize = TS_MAX_BUFSIZE_K_DVBC;
442 		height_mask = TS_HEIGHT_MASK_DVBC;
443 		break;
444 
445 	default:
446 		budget->buffer_width = TS_WIDTH;
447 		max_bufsize = TS_MAX_BUFSIZE_K;
448 		height_mask = TS_HEIGHT_MASK;
449 	}
450 
451 	if (dma_buffer_size < TS_MIN_BUFSIZE_K)
452 		dma_buffer_size = TS_MIN_BUFSIZE_K;
453 	else if (dma_buffer_size > max_bufsize)
454 		dma_buffer_size = max_bufsize;
455 
456 	budget->buffer_height = dma_buffer_size * 1024 / budget->buffer_width;
457 	if (budget->buffer_height > 0xfff) {
458 		budget->buffer_height /= 2;
459 		budget->buffer_height &= height_mask;
460 		budget->buffer_size = 2 * budget->buffer_height * budget->buffer_width;
461 	} else {
462 		budget->buffer_height &= height_mask;
463 		budget->buffer_size = budget->buffer_height * budget->buffer_width;
464 	}
465 	budget->buffer_warning_threshold = budget->buffer_size * 80/100;
466 	budget->buffer_warnings = 0;
467 	budget->buffer_warning_time = jiffies;
468 
469 	dprintk(2, "%s: buffer type = %s, width = %d, height = %d\n",
470 		budget->dev->name,
471 		budget->buffer_size > budget->buffer_width * budget->buffer_height ? "odd/even" : "single",
472 		budget->buffer_width, budget->buffer_height);
473 	printk("%s: dma buffer size %u\n", budget->dev->name, budget->buffer_size);
474 
475 	ret = dvb_register_adapter(&budget->dvb_adapter, budget->card->name,
476 				   owner, &budget->dev->pci->dev, adapter_nums);
477 	if (ret < 0)
478 		return ret;
479 
480 	/* set dd1 stream a & b */
481 	saa7146_write(dev, DD1_STREAM_B, 0x00000000);
482 	saa7146_write(dev, MC2, (MASK_09 | MASK_25));
483 	saa7146_write(dev, MC2, (MASK_10 | MASK_26));
484 	saa7146_write(dev, DD1_INIT, 0x02000000);
485 	saa7146_write(dev, MC2, (MASK_09 | MASK_25 | MASK_10 | MASK_26));
486 
487 	if (bi->type != BUDGET_FS_ACTIVY)
488 		budget->video_port = BUDGET_VIDEO_PORTB;
489 	else
490 		budget->video_port = BUDGET_VIDEO_PORTA;
491 	spin_lock_init(&budget->feedlock);
492 	spin_lock_init(&budget->debilock);
493 
494 	/* the Siemens DVB needs this if you want to have the i2c chips
495 	   get recognized before the main driver is loaded */
496 	if (bi->type != BUDGET_FS_ACTIVY)
497 		saa7146_write(dev, GPIO_CTRL, 0x500000);	/* GPIO 3 = 1 */
498 
499 	strscpy(budget->i2c_adap.name, budget->card->name,
500 		sizeof(budget->i2c_adap.name));
501 
502 	saa7146_i2c_adapter_prepare(dev, &budget->i2c_adap, SAA7146_I2C_BUS_BIT_RATE_120);
503 	strscpy(budget->i2c_adap.name, budget->card->name,
504 		sizeof(budget->i2c_adap.name));
505 
506 	if (i2c_add_adapter(&budget->i2c_adap) < 0) {
507 		ret = -ENOMEM;
508 		goto err_dvb_unregister;
509 	}
510 
511 	ttpci_eeprom_parse_mac(&budget->i2c_adap, budget->dvb_adapter.proposed_mac);
512 
513 	budget->grabbing = saa7146_vmalloc_build_pgtable(dev->pci, budget->buffer_size, &budget->pt);
514 	if (NULL == budget->grabbing) {
515 		ret = -ENOMEM;
516 		goto err_del_i2c;
517 	}
518 
519 	saa7146_write(dev, PCI_BT_V1, 0x001c0000);
520 	/* upload all */
521 	saa7146_write(dev, GPIO_CTRL, 0x000000);
522 
523 	tasklet_setup(&budget->vpe_tasklet, vpeirq);
524 
525 	/* frontend power on */
526 	if (bi->type != BUDGET_FS_ACTIVY)
527 		saa7146_setgpio(dev, 2, SAA7146_GPIO_OUTHI);
528 
529 	if ((ret = budget_register(budget)) == 0)
530 		return 0; /* Everything OK */
531 
532 	/* An error occurred, cleanup resources */
533 	saa7146_vfree_destroy_pgtable(dev->pci, budget->grabbing, &budget->pt);
534 
535 err_del_i2c:
536 	i2c_del_adapter(&budget->i2c_adap);
537 
538 err_dvb_unregister:
539 	dvb_unregister_adapter(&budget->dvb_adapter);
540 
541 	return ret;
542 }
543 
544 void ttpci_budget_init_hooks(struct budget *budget)
545 {
546 	if (budget->dvb_frontend && !budget->read_fe_status) {
547 		budget->read_fe_status = budget->dvb_frontend->ops.read_status;
548 		budget->dvb_frontend->ops.read_status = budget_read_fe_status;
549 	}
550 }
551 
552 int ttpci_budget_deinit(struct budget *budget)
553 {
554 	struct saa7146_dev *dev = budget->dev;
555 
556 	dprintk(2, "budget: %p\n", budget);
557 
558 	budget_unregister(budget);
559 
560 	tasklet_kill(&budget->vpe_tasklet);
561 
562 	saa7146_vfree_destroy_pgtable(dev->pci, budget->grabbing, &budget->pt);
563 
564 	i2c_del_adapter(&budget->i2c_adap);
565 
566 	dvb_unregister_adapter(&budget->dvb_adapter);
567 
568 	return 0;
569 }
570 
571 void ttpci_budget_irq10_handler(struct saa7146_dev *dev, u32 * isr)
572 {
573 	struct budget *budget = dev->ext_priv;
574 
575 	dprintk(8, "dev: %p, budget: %p\n", dev, budget);
576 
577 	if (*isr & MASK_10)
578 		tasklet_schedule(&budget->vpe_tasklet);
579 }
580 
581 void ttpci_budget_set_video_port(struct saa7146_dev *dev, int video_port)
582 {
583 	struct budget *budget = dev->ext_priv;
584 
585 	spin_lock(&budget->feedlock);
586 	budget->video_port = video_port;
587 	if (budget->feeding) {
588 		stop_ts_capture(budget);
589 		start_ts_capture(budget);
590 	}
591 	spin_unlock(&budget->feedlock);
592 }
593 
594 EXPORT_SYMBOL_GPL(ttpci_budget_debiread);
595 EXPORT_SYMBOL_GPL(ttpci_budget_debiwrite);
596 EXPORT_SYMBOL_GPL(ttpci_budget_init);
597 EXPORT_SYMBOL_GPL(ttpci_budget_init_hooks);
598 EXPORT_SYMBOL_GPL(ttpci_budget_deinit);
599 EXPORT_SYMBOL_GPL(ttpci_budget_irq10_handler);
600 EXPORT_SYMBOL_GPL(ttpci_budget_set_video_port);
601 EXPORT_SYMBOL_GPL(budget_debug);
602 
603 MODULE_LICENSE("GPL");
604