2 * budget-core.c: driver for the SAA7146 based Budget DVB cards
4 * Compiled from various sources by Michael Hunold <michael@mihu.de>
6 * Copyright (C) 2002 Ralph Metzler <rjkm@metzlerbros.de>
8 * Copyright (C) 1999-2002 Ralph Metzler
9 * & Marcus Metzler for convergence integrated media GmbH
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
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.
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.
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
34 * the project's page is at http://www.linuxtv.org/dvb/
37 #include <linux/moduleparam.h>
40 #include "ttpci-eeprom.h"
42 #define TS_WIDTH (2 * TS_SIZE)
43 #define TS_WIDTH_ACTIVY TS_SIZE
44 #define TS_HEIGHT_MASK 0xf00
45 #define TS_HEIGHT_MASK_ACTIVY 0xc00
46 #define TS_MIN_BUFSIZE_K 188
47 #define TS_MAX_BUFSIZE_K 1410
48 #define TS_MAX_BUFSIZE_K_ACTIVY 564
49 #define BUFFER_WARNING_WAIT (30*HZ)
52 static int dma_buffer_size = TS_MIN_BUFSIZE_K;
53 module_param_named(debug, budget_debug, int, 0644);
54 module_param_named(bufsize, dma_buffer_size, int, 0444);
55 MODULE_PARM_DESC(debug, "Turn on/off budget debugging (default:off).");
56 MODULE_PARM_DESC(bufsize, "DMA buffer size in KB, default: 188, min: 188, max: 1410 (Activy: 564)");
58 /****************************************************************************
59 * TT budget / WinTV Nova
60 ****************************************************************************/
62 static int stop_ts_capture(struct budget *budget)
64 dprintk(2, "budget: %p\n", budget);
66 if (--budget->feeding)
67 return budget->feeding;
69 saa7146_write(budget->dev, MC1, MASK_20); // DMA3 off
70 SAA7146_IER_DISABLE(budget->dev, MASK_10);
74 static int start_ts_capture(struct budget *budget)
76 struct saa7146_dev *dev = budget->dev;
78 dprintk(2, "budget: %p\n", budget);
81 return ++budget->feeding;
83 saa7146_write(dev, MC1, MASK_20); // DMA3 off
85 memset(budget->grabbing, 0x00, budget->buffer_size);
87 saa7146_write(dev, PCI_BT_V1, 0x001c0000 | (saa7146_read(dev, PCI_BT_V1) & ~0x001f0000));
92 * Signal path on the Activy:
94 * tuner -> SAA7146 port A -> SAA7146 BRS -> SAA7146 DMA3 -> memory
96 * Since the tuner feeds 204 bytes packets into the SAA7146,
97 * DMA3 is configured to strip the trailing 16 FEC bytes:
98 * Pitch: 188, NumBytes3: 188, NumLines3: 1024
101 switch(budget->card->type) {
102 case BUDGET_FS_ACTIVY:
103 saa7146_write(dev, DD1_INIT, 0x04000000);
104 saa7146_write(dev, MC2, (MASK_09 | MASK_25));
105 saa7146_write(dev, BRS_CTRL, 0x00000000);
108 saa7146_write(dev, DD1_INIT, 0x00000200);
109 saa7146_write(dev, MC2, (MASK_10 | MASK_26));
110 saa7146_write(dev, BRS_CTRL, 0x60000000);
113 if (budget->video_port == BUDGET_VIDEO_PORTA) {
114 saa7146_write(dev, DD1_INIT, 0x06000200);
115 saa7146_write(dev, MC2, (MASK_09 | MASK_25 | MASK_10 | MASK_26));
116 saa7146_write(dev, BRS_CTRL, 0x00000000);
118 saa7146_write(dev, DD1_INIT, 0x02000600);
119 saa7146_write(dev, MC2, (MASK_09 | MASK_25 | MASK_10 | MASK_26));
120 saa7146_write(dev, BRS_CTRL, 0x60000000);
124 saa7146_write(dev, MC2, (MASK_08 | MASK_24));
127 saa7146_write(dev, BASE_ODD3, 0);
128 saa7146_write(dev, BASE_EVEN3, 0);
129 saa7146_write(dev, PROT_ADDR3, budget->buffer_size);
130 saa7146_write(dev, BASE_PAGE3, budget->pt.dma | ME1 | 0x90);
132 saa7146_write(dev, PITCH3, budget->buffer_width);
133 saa7146_write(dev, NUM_LINE_BYTE3,
134 (budget->buffer_height << 16) | budget->buffer_width);
136 saa7146_write(dev, MC2, (MASK_04 | MASK_20));
138 SAA7146_ISR_CLEAR(budget->dev, MASK_10); /* VPE */
139 SAA7146_IER_ENABLE(budget->dev, MASK_10); /* VPE */
140 saa7146_write(dev, MC1, (MASK_04 | MASK_20)); /* DMA3 on */
142 return ++budget->feeding;
145 static void vpeirq(unsigned long data)
147 struct budget *budget = (struct budget *) data;
148 u8 *mem = (u8 *) (budget->grabbing);
149 u32 olddma = budget->ttbp;
150 u32 newdma = saa7146_read(budget->dev, PCI_VDP3);
153 /* nearest lower position divisible by 188 */
154 newdma -= newdma % 188;
156 if (newdma >= budget->buffer_size)
159 budget->ttbp = newdma;
161 if (budget->feeding == 0 || newdma == olddma)
164 if (newdma > olddma) { /* no wraparound, dump olddma..newdma */
165 count = newdma - olddma;
166 dvb_dmx_swfilter_packets(&budget->demux, mem + olddma, count / 188);
167 } else { /* wraparound, dump olddma..buflen and 0..newdma */
168 count = budget->buffer_size - olddma;
169 dvb_dmx_swfilter_packets(&budget->demux, mem + olddma, count / 188);
171 dvb_dmx_swfilter_packets(&budget->demux, mem, newdma / 188);
174 if (count > budget->buffer_warning_threshold)
175 budget->buffer_warnings++;
177 if (budget->buffer_warnings && time_after(jiffies, budget->buffer_warning_time)) {
178 printk("%s %s: used %d times >80%% of buffer (%u bytes now)\n",
179 budget->dev->name, __FUNCTION__, budget->buffer_warnings, count);
180 budget->buffer_warning_time = jiffies + BUFFER_WARNING_WAIT;
181 budget->buffer_warnings = 0;
186 int ttpci_budget_debiread(struct budget *budget, u32 config, int addr, int count,
187 int uselocks, int nobusyloop)
189 struct saa7146_dev *saa = budget->dev;
191 unsigned long flags = 0;
193 if (count > 4 || count <= 0)
197 spin_lock_irqsave(&budget->debilock, flags);
199 if ((result = saa7146_wait_for_debi_done(saa, nobusyloop)) < 0) {
201 spin_unlock_irqrestore(&budget->debilock, flags);
205 saa7146_write(saa, DEBI_COMMAND, (count << 17) | 0x10000 | (addr & 0xffff));
206 saa7146_write(saa, DEBI_CONFIG, config);
207 saa7146_write(saa, DEBI_PAGE, 0);
208 saa7146_write(saa, MC2, (2 << 16) | 2);
210 if ((result = saa7146_wait_for_debi_done(saa, nobusyloop)) < 0) {
212 spin_unlock_irqrestore(&budget->debilock, flags);
216 result = saa7146_read(saa, DEBI_AD);
217 result &= (0xffffffffUL >> ((4 - count) * 8));
220 spin_unlock_irqrestore(&budget->debilock, flags);
225 int ttpci_budget_debiwrite(struct budget *budget, u32 config, int addr,
226 int count, u32 value, int uselocks, int nobusyloop)
228 struct saa7146_dev *saa = budget->dev;
229 unsigned long flags = 0;
232 if (count > 4 || count <= 0)
236 spin_lock_irqsave(&budget->debilock, flags);
238 if ((result = saa7146_wait_for_debi_done(saa, nobusyloop)) < 0) {
240 spin_unlock_irqrestore(&budget->debilock, flags);
244 saa7146_write(saa, DEBI_COMMAND, (count << 17) | 0x00000 | (addr & 0xffff));
245 saa7146_write(saa, DEBI_CONFIG, config);
246 saa7146_write(saa, DEBI_PAGE, 0);
247 saa7146_write(saa, DEBI_AD, value);
248 saa7146_write(saa, MC2, (2 << 16) | 2);
250 if ((result = saa7146_wait_for_debi_done(saa, nobusyloop)) < 0) {
252 spin_unlock_irqrestore(&budget->debilock, flags);
257 spin_unlock_irqrestore(&budget->debilock, flags);
262 /****************************************************************************
264 ****************************************************************************/
266 static int budget_start_feed(struct dvb_demux_feed *feed)
268 struct dvb_demux *demux = feed->demux;
269 struct budget *budget = (struct budget *) demux->priv;
272 dprintk(2, "budget: %p\n", budget);
274 if (!demux->dmx.frontend)
277 spin_lock(&budget->feedlock);
278 feed->pusi_seen = 0; /* have a clean section start */
279 status = start_ts_capture(budget);
280 spin_unlock(&budget->feedlock);
284 static int budget_stop_feed(struct dvb_demux_feed *feed)
286 struct dvb_demux *demux = feed->demux;
287 struct budget *budget = (struct budget *) demux->priv;
290 dprintk(2, "budget: %p\n", budget);
292 spin_lock(&budget->feedlock);
293 status = stop_ts_capture(budget);
294 spin_unlock(&budget->feedlock);
298 static int budget_register(struct budget *budget)
300 struct dvb_demux *dvbdemux = &budget->demux;
303 dprintk(2, "budget: %p\n", budget);
305 dvbdemux->priv = (void *) budget;
307 dvbdemux->filternum = 256;
308 dvbdemux->feednum = 256;
309 dvbdemux->start_feed = budget_start_feed;
310 dvbdemux->stop_feed = budget_stop_feed;
311 dvbdemux->write_to_decoder = NULL;
313 dvbdemux->dmx.capabilities = (DMX_TS_FILTERING | DMX_SECTION_FILTERING |
314 DMX_MEMORY_BASED_FILTERING);
316 dvb_dmx_init(&budget->demux);
318 budget->dmxdev.filternum = 256;
319 budget->dmxdev.demux = &dvbdemux->dmx;
320 budget->dmxdev.capabilities = 0;
322 dvb_dmxdev_init(&budget->dmxdev, &budget->dvb_adapter);
324 budget->hw_frontend.source = DMX_FRONTEND_0;
326 ret = dvbdemux->dmx.add_frontend(&dvbdemux->dmx, &budget->hw_frontend);
331 budget->mem_frontend.source = DMX_MEMORY_FE;
332 ret = dvbdemux->dmx.add_frontend(&dvbdemux->dmx, &budget->mem_frontend);
336 ret = dvbdemux->dmx.connect_frontend(&dvbdemux->dmx, &budget->hw_frontend);
340 dvb_net_init(&budget->dvb_adapter, &budget->dvb_net, &dvbdemux->dmx);
345 static void budget_unregister(struct budget *budget)
347 struct dvb_demux *dvbdemux = &budget->demux;
349 dprintk(2, "budget: %p\n", budget);
351 dvb_net_release(&budget->dvb_net);
353 dvbdemux->dmx.close(&dvbdemux->dmx);
354 dvbdemux->dmx.remove_frontend(&dvbdemux->dmx, &budget->hw_frontend);
355 dvbdemux->dmx.remove_frontend(&dvbdemux->dmx, &budget->mem_frontend);
357 dvb_dmxdev_release(&budget->dmxdev);
358 dvb_dmx_release(&budget->demux);
361 int ttpci_budget_init(struct budget *budget, struct saa7146_dev *dev,
362 struct saa7146_pci_extension_data *info,
363 struct module *owner)
366 struct budget_info *bi = info->ext_priv;
370 memset(budget, 0, sizeof(struct budget));
372 dprintk(2, "dev: %p, budget: %p\n", dev, budget);
375 budget->dev = (struct saa7146_dev *) dev;
377 if (budget->card->type == BUDGET_FS_ACTIVY) {
378 budget->buffer_width = TS_WIDTH_ACTIVY;
379 max_bufsize = TS_MAX_BUFSIZE_K_ACTIVY;
380 height_mask = TS_HEIGHT_MASK_ACTIVY;
382 budget->buffer_width = TS_WIDTH;
383 max_bufsize = TS_MAX_BUFSIZE_K;
384 height_mask = TS_HEIGHT_MASK;
387 if (dma_buffer_size < TS_MIN_BUFSIZE_K)
388 dma_buffer_size = TS_MIN_BUFSIZE_K;
389 else if (dma_buffer_size > max_bufsize)
390 dma_buffer_size = max_bufsize;
392 budget->buffer_height = dma_buffer_size * 1024 / budget->buffer_width;
393 budget->buffer_height &= height_mask;
394 budget->buffer_size = budget->buffer_height * budget->buffer_width;
395 budget->buffer_warning_threshold = budget->buffer_size * 80/100;
396 budget->buffer_warnings = 0;
397 budget->buffer_warning_time = jiffies;
399 dprintk(2, "%s: width = %d, height = %d\n",
400 budget->dev->name, budget->buffer_width, budget->buffer_height);
401 printk("%s: dma buffer size %u\n", budget->dev->name, budget->buffer_size);
403 dvb_register_adapter(&budget->dvb_adapter, budget->card->name, owner);
405 /* set dd1 stream a & b */
406 saa7146_write(dev, DD1_STREAM_B, 0x00000000);
407 saa7146_write(dev, MC2, (MASK_09 | MASK_25));
408 saa7146_write(dev, MC2, (MASK_10 | MASK_26));
409 saa7146_write(dev, DD1_INIT, 0x02000000);
410 saa7146_write(dev, MC2, (MASK_09 | MASK_25 | MASK_10 | MASK_26));
412 if (bi->type != BUDGET_FS_ACTIVY)
413 budget->video_port = BUDGET_VIDEO_PORTB;
415 budget->video_port = BUDGET_VIDEO_PORTA;
416 spin_lock_init(&budget->feedlock);
417 spin_lock_init(&budget->debilock);
419 /* the Siemens DVB needs this if you want to have the i2c chips
420 get recognized before the main driver is loaded */
421 if (bi->type != BUDGET_FS_ACTIVY)
422 saa7146_write(dev, GPIO_CTRL, 0x500000); /* GPIO 3 = 1 */
424 #ifdef I2C_ADAP_CLASS_TV_DIGITAL
425 budget->i2c_adap.class = I2C_ADAP_CLASS_TV_DIGITAL;
427 budget->i2c_adap.class = I2C_CLASS_TV_DIGITAL;
430 strlcpy(budget->i2c_adap.name, budget->card->name, sizeof(budget->i2c_adap.name));
432 saa7146_i2c_adapter_prepare(dev, &budget->i2c_adap, SAA7146_I2C_BUS_BIT_RATE_120);
433 strcpy(budget->i2c_adap.name, budget->card->name);
435 if (i2c_add_adapter(&budget->i2c_adap) < 0) {
436 dvb_unregister_adapter(&budget->dvb_adapter);
440 ttpci_eeprom_parse_mac(&budget->i2c_adap, budget->dvb_adapter.proposed_mac);
443 (budget->grabbing = saa7146_vmalloc_build_pgtable(dev->pci, budget->buffer_size, &budget->pt))) {
448 saa7146_write(dev, PCI_BT_V1, 0x001c0000);
450 saa7146_write(dev, GPIO_CTRL, 0x000000);
452 tasklet_init(&budget->vpe_tasklet, vpeirq, (unsigned long) budget);
454 /* frontend power on */
455 if (bi->type != BUDGET_FS_ACTIVY)
456 saa7146_setgpio(dev, 2, SAA7146_GPIO_OUTHI);
458 if (budget_register(budget) == 0) {
462 i2c_del_adapter(&budget->i2c_adap);
464 vfree(budget->grabbing);
466 dvb_unregister_adapter(&budget->dvb_adapter);
471 int ttpci_budget_deinit(struct budget *budget)
473 struct saa7146_dev *dev = budget->dev;
475 dprintk(2, "budget: %p\n", budget);
477 budget_unregister(budget);
479 i2c_del_adapter(&budget->i2c_adap);
481 dvb_unregister_adapter(&budget->dvb_adapter);
483 tasklet_kill(&budget->vpe_tasklet);
485 saa7146_pgtable_free(dev->pci, &budget->pt);
487 vfree(budget->grabbing);
492 void ttpci_budget_irq10_handler(struct saa7146_dev *dev, u32 * isr)
494 struct budget *budget = (struct budget *) dev->ext_priv;
496 dprintk(8, "dev: %p, budget: %p\n", dev, budget);
499 tasklet_schedule(&budget->vpe_tasklet);
502 void ttpci_budget_set_video_port(struct saa7146_dev *dev, int video_port)
504 struct budget *budget = (struct budget *) dev->ext_priv;
506 spin_lock(&budget->feedlock);
507 budget->video_port = video_port;
508 if (budget->feeding) {
509 int oldfeeding = budget->feeding;
511 stop_ts_capture(budget);
512 start_ts_capture(budget);
513 budget->feeding = oldfeeding;
515 spin_unlock(&budget->feedlock);
518 EXPORT_SYMBOL_GPL(ttpci_budget_debiread);
519 EXPORT_SYMBOL_GPL(ttpci_budget_debiwrite);
520 EXPORT_SYMBOL_GPL(ttpci_budget_init);
521 EXPORT_SYMBOL_GPL(ttpci_budget_deinit);
522 EXPORT_SYMBOL_GPL(ttpci_budget_irq10_handler);
523 EXPORT_SYMBOL_GPL(ttpci_budget_set_video_port);
524 EXPORT_SYMBOL_GPL(budget_debug);
526 MODULE_LICENSE("GPL");