3  * budget-core.ko: base-driver for the SAA7146 based Budget DVB cards
21 #include "budget.h"
41 MODULE_PARM_DESC(debug, "Turn on/off budget debugging (default:off).");
45  * TT budget / WinTV Nova
48 static int stop_ts_capture(struct budget *budget)  in stop_ts_capture()  argument
50 	dprintk(2, "budget: %p\n", budget);  in stop_ts_capture()
52 	saa7146_write(budget->dev, MC1, MASK_20);	// DMA3 off  in stop_ts_capture()
53 	SAA7146_IER_DISABLE(budget->dev, MASK_10);  in stop_ts_capture()
57 static int start_ts_capture(struct budget *budget)  in start_ts_capture()  argument
59 	struct saa7146_dev *dev = budget->dev;  in start_ts_capture()
61 	dprintk(2, "budget: %p\n", budget);  in start_ts_capture()
63 	if (!budget->feeding || !budget->fe_synced)  in start_ts_capture()
68 	memset(budget->grabbing, 0x00, budget->buffer_size);  in start_ts_capture()
72 	budget->ttbp = 0;  in start_ts_capture()
84 	switch (budget->card->type) {  in start_ts_capture()
99 		if (budget->video_port == BUDGET_VIDEO_PORTA) {  in start_ts_capture()
110 		if (budget->video_port == BUDGET_VIDEO_PORTA) {  in start_ts_capture()
125 	if (budget->buffer_size > budget->buffer_height * budget->buffer_width) {  in start_ts_capture()
127 		saa7146_write(dev, BASE_EVEN3, budget->buffer_height * budget->buffer_width);  in start_ts_capture()
132 	saa7146_write(dev, PROT_ADDR3, budget->buffer_size);  in start_ts_capture()
133 	saa7146_write(dev, BASE_PAGE3, budget->pt.dma | ME1 | 0x90);  in start_ts_capture()
135 	saa7146_write(dev, PITCH3, budget->buffer_width);  in start_ts_capture()
137 			(budget->buffer_height << 16) | budget->buffer_width);  in start_ts_capture()
141 	SAA7146_ISR_CLEAR(budget->dev, MASK_10);	/* VPE */  in start_ts_capture()
142 	SAA7146_IER_ENABLE(budget->dev, MASK_10);	/* VPE */  in start_ts_capture()
151 	struct budget *budget = fe->dvb->priv;  in budget_read_fe_status()  local
155 	if (budget->read_fe_status)  in budget_read_fe_status()
156 		ret = budget->read_fe_status(fe, status);  in budget_read_fe_status()
162 		if (synced != budget->fe_synced) {  in budget_read_fe_status()
163 			budget->fe_synced = synced;  in budget_read_fe_status()
164 			spin_lock(&budget->feedlock);  in budget_read_fe_status()
166 				start_ts_capture(budget);  in budget_read_fe_status()
168 				stop_ts_capture(budget);  in budget_read_fe_status()
169 			spin_unlock(&budget->feedlock);  in budget_read_fe_status()
177 	struct budget *budget = from_work(budget, t, vpe_bh_work);  in vpeirq()  local
178 	u8 *mem = (u8 *) (budget->grabbing);  in vpeirq()
179 	u32 olddma = budget->ttbp;  in vpeirq()
180 	u32 newdma = saa7146_read(budget->dev, PCI_VDP3);  in vpeirq()
184 	dma_sync_sg_for_cpu(&budget->dev->pci->dev, budget->pt.slist,  in vpeirq()
185 			    budget->pt.nents, DMA_FROM_DEVICE);  in vpeirq()
190 	if (newdma >= budget->buffer_size)  in vpeirq()
193 	budget->ttbp = newdma;  in vpeirq()
195 	if (budget->feeding == 0 || newdma == olddma)  in vpeirq()
200 		dvb_dmx_swfilter_packets(&budget->demux, mem + olddma, count / 188);  in vpeirq()
202 		count = budget->buffer_size - olddma;  in vpeirq()
203 		dvb_dmx_swfilter_packets(&budget->demux, mem + olddma, count / 188);  in vpeirq()
205 		dvb_dmx_swfilter_packets(&budget->demux, mem, newdma / 188);  in vpeirq()
208 	if (count > budget->buffer_warning_threshold)  in vpeirq()
209 		budget->buffer_warnings++;  in vpeirq()
211 	if (budget->buffer_warnings && time_after(jiffies, budget->buffer_warning_time)) {  in vpeirq()
213 			budget->dev->name, __func__, budget->buffer_warnings, count);  in vpeirq()
214 		budget->buffer_warning_time = jiffies + BUFFER_WARNING_WAIT;  in vpeirq()
215 		budget->buffer_warnings = 0;  in vpeirq()
220 static int ttpci_budget_debiread_nolock(struct budget *budget, u32 config,  in ttpci_budget_debiread_nolock()  argument
223 	struct saa7146_dev *saa = budget->dev;  in ttpci_budget_debiread_nolock()
244 int ttpci_budget_debiread(struct budget *budget, u32 config, int addr, int count,  in ttpci_budget_debiread()  argument
254 		spin_lock_irqsave(&budget->debilock, flags);  in ttpci_budget_debiread()
255 		result = ttpci_budget_debiread_nolock(budget, config, addr,  in ttpci_budget_debiread()
257 		spin_unlock_irqrestore(&budget->debilock, flags);  in ttpci_budget_debiread()
260 	return ttpci_budget_debiread_nolock(budget, config, addr,  in ttpci_budget_debiread()
265 static int ttpci_budget_debiwrite_nolock(struct budget *budget, u32 config,  in ttpci_budget_debiwrite_nolock()  argument
268 	struct saa7146_dev *saa = budget->dev;  in ttpci_budget_debiwrite_nolock()
285 int ttpci_budget_debiwrite(struct budget *budget, u32 config, int addr,  in ttpci_budget_debiwrite()  argument
295 		spin_lock_irqsave(&budget->debilock, flags);  in ttpci_budget_debiwrite()
296 		result = ttpci_budget_debiwrite_nolock(budget, config, addr,  in ttpci_budget_debiwrite()
298 		spin_unlock_irqrestore(&budget->debilock, flags);  in ttpci_budget_debiwrite()
301 	return ttpci_budget_debiwrite_nolock(budget, config, addr,  in ttpci_budget_debiwrite()
314 	struct budget *budget = demux->priv;  in budget_start_feed()  local
317 	dprintk(2, "budget: %p\n", budget);  in budget_start_feed()
322 	spin_lock(&budget->feedlock);  in budget_start_feed()
324 	if (budget->feeding++ == 0)  in budget_start_feed()
325 		status = start_ts_capture(budget);  in budget_start_feed()
326 	spin_unlock(&budget->feedlock);  in budget_start_feed()
333 	struct budget *budget = demux->priv;  in budget_stop_feed()  local
336 	dprintk(2, "budget: %p\n", budget);  in budget_stop_feed()
338 	spin_lock(&budget->feedlock);  in budget_stop_feed()
339 	if (--budget->feeding == 0)  in budget_stop_feed()
340 		status = stop_ts_capture(budget);  in budget_stop_feed()
341 	spin_unlock(&budget->feedlock);  in budget_stop_feed()
345 static int budget_register(struct budget *budget)  in budget_register()  argument
347 	struct dvb_demux *dvbdemux = &budget->demux;  in budget_register()
350 	dprintk(2, "budget: %p\n", budget);  in budget_register()
352 	dvbdemux->priv = (void *) budget;  in budget_register()
363 	dvb_dmx_init(&budget->demux);  in budget_register()
365 	budget->dmxdev.filternum = 256;  in budget_register()
366 	budget->dmxdev.demux = &dvbdemux->dmx;  in budget_register()
367 	budget->dmxdev.capabilities = 0;  in budget_register()
369 	dvb_dmxdev_init(&budget->dmxdev, &budget->dvb_adapter);  in budget_register()
371 	budget->hw_frontend.source = DMX_FRONTEND_0;  in budget_register()
373 	ret = dvbdemux->dmx.add_frontend(&dvbdemux->dmx, &budget->hw_frontend);  in budget_register()
378 	budget->mem_frontend.source = DMX_MEMORY_FE;  in budget_register()
379 	ret = dvbdemux->dmx.add_frontend(&dvbdemux->dmx, &budget->mem_frontend);  in budget_register()
383 	ret = dvbdemux->dmx.connect_frontend(&dvbdemux->dmx, &budget->hw_frontend);  in budget_register()
387 	dvb_net_init(&budget->dvb_adapter, &budget->dvb_net, &dvbdemux->dmx);  in budget_register()
392 	dvb_dmxdev_release(&budget->dmxdev);  in budget_register()
393 	dvb_dmx_release(&budget->demux);  in budget_register()
397 static void budget_unregister(struct budget *budget)  in budget_unregister()  argument
399 	struct dvb_demux *dvbdemux = &budget->demux;  in budget_unregister()
401 	dprintk(2, "budget: %p\n", budget);  in budget_unregister()
403 	dvb_net_release(&budget->dvb_net);  in budget_unregister()
406 	dvbdemux->dmx.remove_frontend(&dvbdemux->dmx, &budget->hw_frontend);  in budget_unregister()
407 	dvbdemux->dmx.remove_frontend(&dvbdemux->dmx, &budget->mem_frontend);  in budget_unregister()
409 	dvb_dmxdev_release(&budget->dmxdev);  in budget_unregister()
410 	dvb_dmx_release(&budget->demux);  in budget_unregister()
413 int ttpci_budget_init(struct budget *budget, struct saa7146_dev *dev,  in ttpci_budget_init()  argument
422 	memset(budget, 0, sizeof(struct budget));  in ttpci_budget_init()
424 	dprintk(2, "dev: %p, budget: %p\n", dev, budget);  in ttpci_budget_init()
426 	budget->card = bi;  in ttpci_budget_init()
427 	budget->dev = (struct saa7146_dev *) dev;  in ttpci_budget_init()
429 	switch (budget->card->type) {  in ttpci_budget_init()
431 		budget->buffer_width = TS_WIDTH_ACTIVY;  in ttpci_budget_init()
443 		budget->buffer_width = TS_WIDTH_DVBC;  in ttpci_budget_init()
449 		budget->buffer_width = TS_WIDTH;  in ttpci_budget_init()
459 	budget->buffer_height = dma_buffer_size * 1024 / budget->buffer_width;  in ttpci_budget_init()
460 	if (budget->buffer_height > 0xfff) {  in ttpci_budget_init()
461 		budget->buffer_height /= 2;  in ttpci_budget_init()
462 		budget->buffer_height &= height_mask;  in ttpci_budget_init()
463 		budget->buffer_size = 2 * budget->buffer_height * budget->buffer_width;  in ttpci_budget_init()
465 		budget->buffer_height &= height_mask;  in ttpci_budget_init()
466 		budget->buffer_size = budget->buffer_height * budget->buffer_width;  in ttpci_budget_init()
468 	budget->buffer_warning_threshold = budget->buffer_size * 80/100;  in ttpci_budget_init()
469 	budget->buffer_warnings = 0;  in ttpci_budget_init()
470 	budget->buffer_warning_time = jiffies;  in ttpci_budget_init()
473 		budget->dev->name,  in ttpci_budget_init()
474 		budget->buffer_size > budget->buffer_width * budget->buffer_height ? "odd/even" : "single",  in ttpci_budget_init()
475 		budget->buffer_width, budget->buffer_height);  in ttpci_budget_init()
476 	pr_info("%s: dma buffer size %u\n", budget->dev->name, budget->buffer_size);  in ttpci_budget_init()
478 	ret = dvb_register_adapter(&budget->dvb_adapter, budget->card->name,  in ttpci_budget_init()
479 				   owner, &budget->dev->pci->dev, adapter_nums);  in ttpci_budget_init()
491 		budget->video_port = BUDGET_VIDEO_PORTB;  in ttpci_budget_init()
493 		budget->video_port = BUDGET_VIDEO_PORTA;  in ttpci_budget_init()
494 	spin_lock_init(&budget->feedlock);  in ttpci_budget_init()
495 	spin_lock_init(&budget->debilock);  in ttpci_budget_init()
504 	strscpy(budget->i2c_adap.name, budget->card->name,  in ttpci_budget_init()
505 		sizeof(budget->i2c_adap.name));  in ttpci_budget_init()
507 	saa7146_i2c_adapter_prepare(dev, &budget->i2c_adap, SAA7146_I2C_BUS_BIT_RATE_120);  in ttpci_budget_init()
508 	strscpy(budget->i2c_adap.name, budget->card->name,  in ttpci_budget_init()
509 		sizeof(budget->i2c_adap.name));  in ttpci_budget_init()
511 	if (i2c_add_adapter(&budget->i2c_adap) < 0) {  in ttpci_budget_init()
516 	ttpci_eeprom_parse_mac(&budget->i2c_adap, budget->dvb_adapter.proposed_mac);  in ttpci_budget_init()
518 	budget->grabbing = saa7146_vmalloc_build_pgtable(dev->pci, budget->buffer_size, &budget->pt);  in ttpci_budget_init()
519 	if (budget->grabbing == NULL) {  in ttpci_budget_init()
528 	INIT_WORK(&budget->vpe_bh_work, vpeirq);  in ttpci_budget_init()
534 	ret = budget_register(budget);  in ttpci_budget_init()
539 	saa7146_vfree_destroy_pgtable(dev->pci, budget->grabbing, &budget->pt);  in ttpci_budget_init()
542 	i2c_del_adapter(&budget->i2c_adap);  in ttpci_budget_init()
545 	dvb_unregister_adapter(&budget->dvb_adapter);  in ttpci_budget_init()
551 void ttpci_budget_init_hooks(struct budget *budget)  in ttpci_budget_init_hooks()  argument
553 	if (budget->dvb_frontend && !budget->read_fe_status) {  in ttpci_budget_init_hooks()
554 		budget->read_fe_status = budget->dvb_frontend->ops.read_status;  in ttpci_budget_init_hooks()
555 		budget->dvb_frontend->ops.read_status = budget_read_fe_status;  in ttpci_budget_init_hooks()
560 int ttpci_budget_deinit(struct budget *budget)  in ttpci_budget_deinit()  argument
562 	struct saa7146_dev *dev = budget->dev;  in ttpci_budget_deinit()
564 	dprintk(2, "budget: %p\n", budget);  in ttpci_budget_deinit()
566 	budget_unregister(budget);  in ttpci_budget_deinit()
568 	cancel_work_sync(&budget->vpe_bh_work);  in ttpci_budget_deinit()
570 	saa7146_vfree_destroy_pgtable(dev->pci, budget->grabbing, &budget->pt);  in ttpci_budget_deinit()
572 	i2c_del_adapter(&budget->i2c_adap);  in ttpci_budget_deinit()
574 	dvb_unregister_adapter(&budget->dvb_adapter);  in ttpci_budget_deinit()
582 	struct budget *budget = dev->ext_priv;  in ttpci_budget_irq10_handler()  local
584 	dprintk(8, "dev: %p, budget: %p\n", dev, budget);  in ttpci_budget_irq10_handler()
587 		queue_work(system_bh_wq, &budget->vpe_bh_work);  in ttpci_budget_irq10_handler()
593 	struct budget *budget = dev->ext_priv;  in ttpci_budget_set_video_port()  local
595 	spin_lock(&budget->feedlock);  in ttpci_budget_set_video_port()
596 	budget->video_port = video_port;  in ttpci_budget_set_video_port()
597 	if (budget->feeding) {  in ttpci_budget_set_video_port()
598 		stop_ts_capture(budget);  in ttpci_budget_set_video_port()
599 		start_ts_capture(budget);  in ttpci_budget_set_video_port()
601 	spin_unlock(&budget->feedlock);  in ttpci_budget_set_video_port()
605 MODULE_DESCRIPTION("base driver for the SAA7146 based Budget DVB cards");