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34#include <linux/io.h>
35#include <linux/delay.h>
36#include <linux/interrupt.h>
37#include <linux/init.h>
38#include <linux/pci.h>
39#include <linux/slab.h>
40#include <linux/module.h>
41#include <sound/core.h>
42#include <sound/pcm.h>
43#include <sound/pcm_params.h>
44#include <sound/info.h>
45#include <sound/ac97_codec.h>
46#include <sound/initval.h>
47
48#if 0
49#define POINTER_DEBUG
50#endif
51
52MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
53MODULE_DESCRIPTION("VIA VT82xx modem");
54MODULE_LICENSE("GPL");
55MODULE_SUPPORTED_DEVICE("{{VIA,VT82C686A/B/C modem,pci}}");
56
57static int index = -2;
58static char *id = SNDRV_DEFAULT_STR1;
59static int ac97_clock = 48000;
60
61module_param(index, int, 0444);
62MODULE_PARM_DESC(index, "Index value for VIA 82xx bridge.");
63module_param(id, charp, 0444);
64MODULE_PARM_DESC(id, "ID string for VIA 82xx bridge.");
65module_param(ac97_clock, int, 0444);
66MODULE_PARM_DESC(ac97_clock, "AC'97 codec clock (default 48000Hz).");
67
68
69static bool enable;
70module_param(enable, bool, 0444);
71
72
73
74
75
76
77#define VIAREG(via, x) ((via)->port + VIA_REG_##x)
78#define VIADEV_REG(viadev, x) ((viadev)->port + VIA_REG_##x)
79
80
81#define VIA_REG_OFFSET_STATUS 0x00
82#define VIA_REG_STAT_ACTIVE 0x80
83#define VIA_REG_STAT_PAUSED 0x40
84#define VIA_REG_STAT_TRIGGER_QUEUED 0x08
85#define VIA_REG_STAT_STOPPED 0x04
86#define VIA_REG_STAT_EOL 0x02
87#define VIA_REG_STAT_FLAG 0x01
88#define VIA_REG_OFFSET_CONTROL 0x01
89#define VIA_REG_CTRL_START 0x80
90#define VIA_REG_CTRL_TERMINATE 0x40
91#define VIA_REG_CTRL_AUTOSTART 0x20
92#define VIA_REG_CTRL_PAUSE 0x08
93#define VIA_REG_CTRL_INT_STOP 0x04
94#define VIA_REG_CTRL_INT_EOL 0x02
95#define VIA_REG_CTRL_INT_FLAG 0x01
96#define VIA_REG_CTRL_RESET 0x01
97#define VIA_REG_CTRL_INT (VIA_REG_CTRL_INT_FLAG | VIA_REG_CTRL_INT_EOL | VIA_REG_CTRL_AUTOSTART)
98#define VIA_REG_OFFSET_TYPE 0x02
99#define VIA_REG_TYPE_AUTOSTART 0x80
100#define VIA_REG_TYPE_16BIT 0x20
101#define VIA_REG_TYPE_STEREO 0x10
102#define VIA_REG_TYPE_INT_LLINE 0x00
103#define VIA_REG_TYPE_INT_LSAMPLE 0x04
104#define VIA_REG_TYPE_INT_LESSONE 0x08
105#define VIA_REG_TYPE_INT_MASK 0x0c
106#define VIA_REG_TYPE_INT_EOL 0x02
107#define VIA_REG_TYPE_INT_FLAG 0x01
108#define VIA_REG_OFFSET_TABLE_PTR 0x04
109#define VIA_REG_OFFSET_CURR_PTR 0x04
110#define VIA_REG_OFFSET_STOP_IDX 0x08
111#define VIA_REG_OFFSET_CURR_COUNT 0x0c
112#define VIA_REG_OFFSET_CURR_INDEX 0x0f
113
114#define DEFINE_VIA_REGSET(name,val) \
115enum {\
116 VIA_REG_##name##_STATUS = (val),\
117 VIA_REG_##name##_CONTROL = (val) + 0x01,\
118 VIA_REG_##name##_TYPE = (val) + 0x02,\
119 VIA_REG_##name##_TABLE_PTR = (val) + 0x04,\
120 VIA_REG_##name##_CURR_PTR = (val) + 0x04,\
121 VIA_REG_##name##_STOP_IDX = (val) + 0x08,\
122 VIA_REG_##name##_CURR_COUNT = (val) + 0x0c,\
123}
124
125
126DEFINE_VIA_REGSET(MO, 0x40);
127DEFINE_VIA_REGSET(MI, 0x50);
128
129
130#define VIA_REG_AC97 0x80
131#define VIA_REG_AC97_CODEC_ID_MASK (3<<30)
132#define VIA_REG_AC97_CODEC_ID_SHIFT 30
133#define VIA_REG_AC97_CODEC_ID_PRIMARY 0x00
134#define VIA_REG_AC97_CODEC_ID_SECONDARY 0x01
135#define VIA_REG_AC97_SECONDARY_VALID (1<<27)
136#define VIA_REG_AC97_PRIMARY_VALID (1<<25)
137#define VIA_REG_AC97_BUSY (1<<24)
138#define VIA_REG_AC97_READ (1<<23)
139#define VIA_REG_AC97_CMD_SHIFT 16
140#define VIA_REG_AC97_CMD_MASK 0x7e
141#define VIA_REG_AC97_DATA_SHIFT 0
142#define VIA_REG_AC97_DATA_MASK 0xffff
143
144#define VIA_REG_SGD_SHADOW 0x84
145#define VIA_REG_SGD_STAT_PB_FLAG (1<<0)
146#define VIA_REG_SGD_STAT_CP_FLAG (1<<1)
147#define VIA_REG_SGD_STAT_FM_FLAG (1<<2)
148#define VIA_REG_SGD_STAT_PB_EOL (1<<4)
149#define VIA_REG_SGD_STAT_CP_EOL (1<<5)
150#define VIA_REG_SGD_STAT_FM_EOL (1<<6)
151#define VIA_REG_SGD_STAT_PB_STOP (1<<8)
152#define VIA_REG_SGD_STAT_CP_STOP (1<<9)
153#define VIA_REG_SGD_STAT_FM_STOP (1<<10)
154#define VIA_REG_SGD_STAT_PB_ACTIVE (1<<12)
155#define VIA_REG_SGD_STAT_CP_ACTIVE (1<<13)
156#define VIA_REG_SGD_STAT_FM_ACTIVE (1<<14)
157#define VIA_REG_SGD_STAT_MR_FLAG (1<<16)
158#define VIA_REG_SGD_STAT_MW_FLAG (1<<17)
159#define VIA_REG_SGD_STAT_MR_EOL (1<<20)
160#define VIA_REG_SGD_STAT_MW_EOL (1<<21)
161#define VIA_REG_SGD_STAT_MR_STOP (1<<24)
162#define VIA_REG_SGD_STAT_MW_STOP (1<<25)
163#define VIA_REG_SGD_STAT_MR_ACTIVE (1<<28)
164#define VIA_REG_SGD_STAT_MW_ACTIVE (1<<29)
165
166#define VIA_REG_GPI_STATUS 0x88
167#define VIA_REG_GPI_INTR 0x8c
168
169#define VIA_TBL_BIT_FLAG 0x40000000
170#define VIA_TBL_BIT_EOL 0x80000000
171
172
173#define VIA_ACLINK_STAT 0x40
174#define VIA_ACLINK_C11_READY 0x20
175#define VIA_ACLINK_C10_READY 0x10
176#define VIA_ACLINK_C01_READY 0x04
177#define VIA_ACLINK_LOWPOWER 0x02
178#define VIA_ACLINK_C00_READY 0x01
179#define VIA_ACLINK_CTRL 0x41
180#define VIA_ACLINK_CTRL_ENABLE 0x80
181#define VIA_ACLINK_CTRL_RESET 0x40
182#define VIA_ACLINK_CTRL_SYNC 0x20
183#define VIA_ACLINK_CTRL_SDO 0x10
184#define VIA_ACLINK_CTRL_VRA 0x08
185#define VIA_ACLINK_CTRL_PCM 0x04
186#define VIA_ACLINK_CTRL_FM 0x02
187#define VIA_ACLINK_CTRL_SB 0x01
188#define VIA_ACLINK_CTRL_INIT (VIA_ACLINK_CTRL_ENABLE|\
189 VIA_ACLINK_CTRL_RESET|\
190 VIA_ACLINK_CTRL_PCM)
191#define VIA_FUNC_ENABLE 0x42
192#define VIA_FUNC_MIDI_PNP 0x80
193#define VIA_FUNC_MIDI_IRQMASK 0x40
194#define VIA_FUNC_RX2C_WRITE 0x20
195#define VIA_FUNC_SB_FIFO_EMPTY 0x10
196#define VIA_FUNC_ENABLE_GAME 0x08
197#define VIA_FUNC_ENABLE_FM 0x04
198#define VIA_FUNC_ENABLE_MIDI 0x02
199#define VIA_FUNC_ENABLE_SB 0x01
200#define VIA_PNP_CONTROL 0x43
201#define VIA_MC97_CTRL 0x44
202#define VIA_MC97_CTRL_ENABLE 0x80
203#define VIA_MC97_CTRL_SECONDARY 0x40
204#define VIA_MC97_CTRL_INIT (VIA_MC97_CTRL_ENABLE|\
205 VIA_MC97_CTRL_SECONDARY)
206
207
208
209
210
211
212struct snd_via_sg_table {
213 unsigned int offset;
214 unsigned int size;
215} ;
216
217#define VIA_TABLE_SIZE 255
218
219struct viadev {
220 unsigned int reg_offset;
221 unsigned long port;
222 int direction;
223 struct snd_pcm_substream *substream;
224 int running;
225 unsigned int tbl_entries;
226 struct snd_dma_buffer table;
227 struct snd_via_sg_table *idx_table;
228
229 unsigned int lastpos;
230 unsigned int bufsize;
231 unsigned int bufsize2;
232};
233
234enum { TYPE_CARD_VIA82XX_MODEM = 1 };
235
236#define VIA_MAX_MODEM_DEVS 2
237
238struct via82xx_modem {
239 int irq;
240
241 unsigned long port;
242
243 unsigned int intr_mask;
244
245 struct pci_dev *pci;
246 struct snd_card *card;
247
248 unsigned int num_devs;
249 unsigned int playback_devno, capture_devno;
250 struct viadev devs[VIA_MAX_MODEM_DEVS];
251
252 struct snd_pcm *pcms[2];
253
254 struct snd_ac97_bus *ac97_bus;
255 struct snd_ac97 *ac97;
256 unsigned int ac97_clock;
257 unsigned int ac97_secondary;
258
259 spinlock_t reg_lock;
260 struct snd_info_entry *proc_entry;
261};
262
263static const struct pci_device_id snd_via82xx_modem_ids[] = {
264 { PCI_VDEVICE(VIA, 0x3068), TYPE_CARD_VIA82XX_MODEM, },
265 { 0, }
266};
267
268MODULE_DEVICE_TABLE(pci, snd_via82xx_modem_ids);
269
270
271
272
273
274
275
276
277
278static int build_via_table(struct viadev *dev, struct snd_pcm_substream *substream,
279 struct pci_dev *pci,
280 unsigned int periods, unsigned int fragsize)
281{
282 unsigned int i, idx, ofs, rest;
283 struct via82xx_modem *chip = snd_pcm_substream_chip(substream);
284
285 if (dev->table.area == NULL) {
286
287
288
289 if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(chip->pci),
290 PAGE_ALIGN(VIA_TABLE_SIZE * 2 * 8),
291 &dev->table) < 0)
292 return -ENOMEM;
293 }
294 if (! dev->idx_table) {
295 dev->idx_table = kmalloc_array(VIA_TABLE_SIZE,
296 sizeof(*dev->idx_table),
297 GFP_KERNEL);
298 if (! dev->idx_table)
299 return -ENOMEM;
300 }
301
302
303 idx = 0;
304 ofs = 0;
305 for (i = 0; i < periods; i++) {
306 rest = fragsize;
307
308
309
310
311 do {
312 unsigned int r;
313 unsigned int flag;
314 unsigned int addr;
315
316 if (idx >= VIA_TABLE_SIZE) {
317 dev_err(&pci->dev, "too much table size!\n");
318 return -EINVAL;
319 }
320 addr = snd_pcm_sgbuf_get_addr(substream, ofs);
321 ((u32 *)dev->table.area)[idx << 1] = cpu_to_le32(addr);
322 r = PAGE_SIZE - (ofs % PAGE_SIZE);
323 if (rest < r)
324 r = rest;
325 rest -= r;
326 if (! rest) {
327 if (i == periods - 1)
328 flag = VIA_TBL_BIT_EOL;
329 else
330 flag = VIA_TBL_BIT_FLAG;
331 } else
332 flag = 0;
333
334
335
336
337
338 ((u32 *)dev->table.area)[(idx<<1) + 1] = cpu_to_le32(r | flag);
339 dev->idx_table[idx].offset = ofs;
340 dev->idx_table[idx].size = r;
341 ofs += r;
342 idx++;
343 } while (rest > 0);
344 }
345 dev->tbl_entries = idx;
346 dev->bufsize = periods * fragsize;
347 dev->bufsize2 = dev->bufsize / 2;
348 return 0;
349}
350
351
352static int clean_via_table(struct viadev *dev, struct snd_pcm_substream *substream,
353 struct pci_dev *pci)
354{
355 if (dev->table.area) {
356 snd_dma_free_pages(&dev->table);
357 dev->table.area = NULL;
358 }
359 kfree(dev->idx_table);
360 dev->idx_table = NULL;
361 return 0;
362}
363
364
365
366
367
368static inline unsigned int snd_via82xx_codec_xread(struct via82xx_modem *chip)
369{
370 return inl(VIAREG(chip, AC97));
371}
372
373static inline void snd_via82xx_codec_xwrite(struct via82xx_modem *chip, unsigned int val)
374{
375 outl(val, VIAREG(chip, AC97));
376}
377
378static int snd_via82xx_codec_ready(struct via82xx_modem *chip, int secondary)
379{
380 unsigned int timeout = 1000;
381 unsigned int val;
382
383 while (timeout-- > 0) {
384 udelay(1);
385 if (!((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY))
386 return val & 0xffff;
387 }
388 dev_err(chip->card->dev, "codec_ready: codec %i is not ready [0x%x]\n",
389 secondary, snd_via82xx_codec_xread(chip));
390 return -EIO;
391}
392
393static int snd_via82xx_codec_valid(struct via82xx_modem *chip, int secondary)
394{
395 unsigned int timeout = 1000;
396 unsigned int val, val1;
397 unsigned int stat = !secondary ? VIA_REG_AC97_PRIMARY_VALID :
398 VIA_REG_AC97_SECONDARY_VALID;
399
400 while (timeout-- > 0) {
401 val = snd_via82xx_codec_xread(chip);
402 val1 = val & (VIA_REG_AC97_BUSY | stat);
403 if (val1 == stat)
404 return val & 0xffff;
405 udelay(1);
406 }
407 return -EIO;
408}
409
410static void snd_via82xx_codec_wait(struct snd_ac97 *ac97)
411{
412 struct via82xx_modem *chip = ac97->private_data;
413 int err;
414 err = snd_via82xx_codec_ready(chip, ac97->num);
415
416 msleep(500);
417}
418
419static void snd_via82xx_codec_write(struct snd_ac97 *ac97,
420 unsigned short reg,
421 unsigned short val)
422{
423 struct via82xx_modem *chip = ac97->private_data;
424 unsigned int xval;
425 if(reg == AC97_GPIO_STATUS) {
426 outl(val, VIAREG(chip, GPI_STATUS));
427 return;
428 }
429 xval = !ac97->num ? VIA_REG_AC97_CODEC_ID_PRIMARY : VIA_REG_AC97_CODEC_ID_SECONDARY;
430 xval <<= VIA_REG_AC97_CODEC_ID_SHIFT;
431 xval |= reg << VIA_REG_AC97_CMD_SHIFT;
432 xval |= val << VIA_REG_AC97_DATA_SHIFT;
433 snd_via82xx_codec_xwrite(chip, xval);
434 snd_via82xx_codec_ready(chip, ac97->num);
435}
436
437static unsigned short snd_via82xx_codec_read(struct snd_ac97 *ac97, unsigned short reg)
438{
439 struct via82xx_modem *chip = ac97->private_data;
440 unsigned int xval, val = 0xffff;
441 int again = 0;
442
443 xval = ac97->num << VIA_REG_AC97_CODEC_ID_SHIFT;
444 xval |= ac97->num ? VIA_REG_AC97_SECONDARY_VALID : VIA_REG_AC97_PRIMARY_VALID;
445 xval |= VIA_REG_AC97_READ;
446 xval |= (reg & 0x7f) << VIA_REG_AC97_CMD_SHIFT;
447 while (1) {
448 if (again++ > 3) {
449 dev_err(chip->card->dev,
450 "codec_read: codec %i is not valid [0x%x]\n",
451 ac97->num, snd_via82xx_codec_xread(chip));
452 return 0xffff;
453 }
454 snd_via82xx_codec_xwrite(chip, xval);
455 udelay (20);
456 if (snd_via82xx_codec_valid(chip, ac97->num) >= 0) {
457 udelay(25);
458 val = snd_via82xx_codec_xread(chip);
459 break;
460 }
461 }
462 return val & 0xffff;
463}
464
465static void snd_via82xx_channel_reset(struct via82xx_modem *chip, struct viadev *viadev)
466{
467 outb(VIA_REG_CTRL_PAUSE | VIA_REG_CTRL_TERMINATE | VIA_REG_CTRL_RESET,
468 VIADEV_REG(viadev, OFFSET_CONTROL));
469 inb(VIADEV_REG(viadev, OFFSET_CONTROL));
470 udelay(50);
471
472 outb(0x00, VIADEV_REG(viadev, OFFSET_CONTROL));
473
474 outb(0x03, VIADEV_REG(viadev, OFFSET_STATUS));
475 outb(0x00, VIADEV_REG(viadev, OFFSET_TYPE));
476
477 viadev->lastpos = 0;
478}
479
480
481
482
483
484
485static irqreturn_t snd_via82xx_interrupt(int irq, void *dev_id)
486{
487 struct via82xx_modem *chip = dev_id;
488 unsigned int status;
489 unsigned int i;
490
491 status = inl(VIAREG(chip, SGD_SHADOW));
492 if (! (status & chip->intr_mask)) {
493 return IRQ_NONE;
494 }
495
496
497
498 spin_lock(&chip->reg_lock);
499 for (i = 0; i < chip->num_devs; i++) {
500 struct viadev *viadev = &chip->devs[i];
501 unsigned char c_status = inb(VIADEV_REG(viadev, OFFSET_STATUS));
502 c_status &= (VIA_REG_STAT_EOL|VIA_REG_STAT_FLAG|VIA_REG_STAT_STOPPED);
503 if (! c_status)
504 continue;
505 if (viadev->substream && viadev->running) {
506 spin_unlock(&chip->reg_lock);
507 snd_pcm_period_elapsed(viadev->substream);
508 spin_lock(&chip->reg_lock);
509 }
510 outb(c_status, VIADEV_REG(viadev, OFFSET_STATUS));
511 }
512 spin_unlock(&chip->reg_lock);
513 return IRQ_HANDLED;
514}
515
516
517
518
519
520
521
522
523static int snd_via82xx_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
524{
525 struct via82xx_modem *chip = snd_pcm_substream_chip(substream);
526 struct viadev *viadev = substream->runtime->private_data;
527 unsigned char val = 0;
528
529 switch (cmd) {
530 case SNDRV_PCM_TRIGGER_START:
531 case SNDRV_PCM_TRIGGER_SUSPEND:
532 val |= VIA_REG_CTRL_START;
533 viadev->running = 1;
534 break;
535 case SNDRV_PCM_TRIGGER_STOP:
536 val = VIA_REG_CTRL_TERMINATE;
537 viadev->running = 0;
538 break;
539 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
540 val |= VIA_REG_CTRL_PAUSE;
541 viadev->running = 0;
542 break;
543 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
544 viadev->running = 1;
545 break;
546 default:
547 return -EINVAL;
548 }
549 outb(val, VIADEV_REG(viadev, OFFSET_CONTROL));
550 if (cmd == SNDRV_PCM_TRIGGER_STOP)
551 snd_via82xx_channel_reset(chip, viadev);
552 return 0;
553}
554
555
556
557
558
559
560
561
562
563#define check_invalid_pos(viadev,pos) \
564 ((pos) < viadev->lastpos && ((pos) >= viadev->bufsize2 ||\
565 viadev->lastpos < viadev->bufsize2))
566
567static inline unsigned int calc_linear_pos(struct via82xx_modem *chip,
568 struct viadev *viadev,
569 unsigned int idx,
570 unsigned int count)
571{
572 unsigned int size, res;
573
574 size = viadev->idx_table[idx].size;
575 res = viadev->idx_table[idx].offset + size - count;
576
577
578 if (size < count) {
579 dev_err(chip->card->dev,
580 "invalid via82xx_cur_ptr (size = %d, count = %d)\n",
581 (int)size, (int)count);
582 res = viadev->lastpos;
583 } else if (check_invalid_pos(viadev, res)) {
584#ifdef POINTER_DEBUG
585 dev_dbg(chip->card->dev,
586 "fail: idx = %i/%i, lastpos = 0x%x, bufsize2 = 0x%x, offsize = 0x%x, size = 0x%x, count = 0x%x\n",
587 idx, viadev->tbl_entries, viadev->lastpos,
588 viadev->bufsize2, viadev->idx_table[idx].offset,
589 viadev->idx_table[idx].size, count);
590#endif
591 if (count && size < count) {
592 dev_dbg(chip->card->dev,
593 "invalid via82xx_cur_ptr, using last valid pointer\n");
594 res = viadev->lastpos;
595 } else {
596 if (! count)
597
598 res = viadev->idx_table[idx].offset;
599 else
600
601
602
603 res = viadev->idx_table[idx].offset + size;
604 if (check_invalid_pos(viadev, res)) {
605 dev_dbg(chip->card->dev,
606 "invalid via82xx_cur_ptr (2), using last valid pointer\n");
607 res = viadev->lastpos;
608 }
609 }
610 }
611 viadev->lastpos = res;
612 if (res >= viadev->bufsize)
613 res -= viadev->bufsize;
614 return res;
615}
616
617
618
619
620static snd_pcm_uframes_t snd_via686_pcm_pointer(struct snd_pcm_substream *substream)
621{
622 struct via82xx_modem *chip = snd_pcm_substream_chip(substream);
623 struct viadev *viadev = substream->runtime->private_data;
624 unsigned int idx, ptr, count, res;
625
626 if (snd_BUG_ON(!viadev->tbl_entries))
627 return 0;
628 if (!(inb(VIADEV_REG(viadev, OFFSET_STATUS)) & VIA_REG_STAT_ACTIVE))
629 return 0;
630
631 spin_lock(&chip->reg_lock);
632 count = inl(VIADEV_REG(viadev, OFFSET_CURR_COUNT)) & 0xffffff;
633
634
635
636 ptr = inl(VIADEV_REG(viadev, OFFSET_CURR_PTR));
637 if (ptr <= (unsigned int)viadev->table.addr)
638 idx = 0;
639 else
640 idx = ((ptr - (unsigned int)viadev->table.addr) / 8 - 1) %
641 viadev->tbl_entries;
642 res = calc_linear_pos(chip, viadev, idx, count);
643 spin_unlock(&chip->reg_lock);
644
645 return bytes_to_frames(substream->runtime, res);
646}
647
648
649
650
651
652static int snd_via82xx_hw_params(struct snd_pcm_substream *substream,
653 struct snd_pcm_hw_params *hw_params)
654{
655 struct via82xx_modem *chip = snd_pcm_substream_chip(substream);
656 struct viadev *viadev = substream->runtime->private_data;
657 int err;
658
659 err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
660 if (err < 0)
661 return err;
662 err = build_via_table(viadev, substream, chip->pci,
663 params_periods(hw_params),
664 params_period_bytes(hw_params));
665 if (err < 0)
666 return err;
667
668 snd_ac97_write(chip->ac97, AC97_LINE1_RATE, params_rate(hw_params));
669 snd_ac97_write(chip->ac97, AC97_LINE1_LEVEL, 0);
670
671 return 0;
672}
673
674
675
676
677
678static int snd_via82xx_hw_free(struct snd_pcm_substream *substream)
679{
680 struct via82xx_modem *chip = snd_pcm_substream_chip(substream);
681 struct viadev *viadev = substream->runtime->private_data;
682
683 clean_via_table(viadev, substream, chip->pci);
684 snd_pcm_lib_free_pages(substream);
685 return 0;
686}
687
688
689
690
691
692static void snd_via82xx_set_table_ptr(struct via82xx_modem *chip, struct viadev *viadev)
693{
694 snd_via82xx_codec_ready(chip, chip->ac97_secondary);
695 outl((u32)viadev->table.addr, VIADEV_REG(viadev, OFFSET_TABLE_PTR));
696 udelay(20);
697 snd_via82xx_codec_ready(chip, chip->ac97_secondary);
698}
699
700
701
702
703static int snd_via82xx_pcm_prepare(struct snd_pcm_substream *substream)
704{
705 struct via82xx_modem *chip = snd_pcm_substream_chip(substream);
706 struct viadev *viadev = substream->runtime->private_data;
707
708 snd_via82xx_channel_reset(chip, viadev);
709
710 snd_via82xx_set_table_ptr(chip, viadev);
711 outb(VIA_REG_TYPE_AUTOSTART|VIA_REG_TYPE_INT_EOL|VIA_REG_TYPE_INT_FLAG,
712 VIADEV_REG(viadev, OFFSET_TYPE));
713 return 0;
714}
715
716
717
718
719static const struct snd_pcm_hardware snd_via82xx_hw =
720{
721 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
722 SNDRV_PCM_INFO_BLOCK_TRANSFER |
723 SNDRV_PCM_INFO_MMAP_VALID |
724
725 SNDRV_PCM_INFO_PAUSE),
726 .formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE,
727 .rates = SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_KNOT,
728 .rate_min = 8000,
729 .rate_max = 16000,
730 .channels_min = 1,
731 .channels_max = 1,
732 .buffer_bytes_max = 128 * 1024,
733 .period_bytes_min = 32,
734 .period_bytes_max = 128 * 1024,
735 .periods_min = 2,
736 .periods_max = VIA_TABLE_SIZE / 2,
737 .fifo_size = 0,
738};
739
740
741
742
743
744static int snd_via82xx_modem_pcm_open(struct via82xx_modem *chip, struct viadev *viadev,
745 struct snd_pcm_substream *substream)
746{
747 struct snd_pcm_runtime *runtime = substream->runtime;
748 int err;
749 static const unsigned int rates[] = { 8000, 9600, 12000, 16000 };
750 static const struct snd_pcm_hw_constraint_list hw_constraints_rates = {
751 .count = ARRAY_SIZE(rates),
752 .list = rates,
753 .mask = 0,
754 };
755
756 runtime->hw = snd_via82xx_hw;
757
758 if ((err = snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
759 &hw_constraints_rates)) < 0)
760 return err;
761
762
763
764 if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
765 return err;
766
767 runtime->private_data = viadev;
768 viadev->substream = substream;
769
770 return 0;
771}
772
773
774
775
776
777static int snd_via82xx_playback_open(struct snd_pcm_substream *substream)
778{
779 struct via82xx_modem *chip = snd_pcm_substream_chip(substream);
780 struct viadev *viadev = &chip->devs[chip->playback_devno + substream->number];
781
782 return snd_via82xx_modem_pcm_open(chip, viadev, substream);
783}
784
785
786
787
788static int snd_via82xx_capture_open(struct snd_pcm_substream *substream)
789{
790 struct via82xx_modem *chip = snd_pcm_substream_chip(substream);
791 struct viadev *viadev = &chip->devs[chip->capture_devno + substream->pcm->device];
792
793 return snd_via82xx_modem_pcm_open(chip, viadev, substream);
794}
795
796
797
798
799static int snd_via82xx_pcm_close(struct snd_pcm_substream *substream)
800{
801 struct viadev *viadev = substream->runtime->private_data;
802
803 viadev->substream = NULL;
804 return 0;
805}
806
807
808
809static const struct snd_pcm_ops snd_via686_playback_ops = {
810 .open = snd_via82xx_playback_open,
811 .close = snd_via82xx_pcm_close,
812 .ioctl = snd_pcm_lib_ioctl,
813 .hw_params = snd_via82xx_hw_params,
814 .hw_free = snd_via82xx_hw_free,
815 .prepare = snd_via82xx_pcm_prepare,
816 .trigger = snd_via82xx_pcm_trigger,
817 .pointer = snd_via686_pcm_pointer,
818 .page = snd_pcm_sgbuf_ops_page,
819};
820
821
822static const struct snd_pcm_ops snd_via686_capture_ops = {
823 .open = snd_via82xx_capture_open,
824 .close = snd_via82xx_pcm_close,
825 .ioctl = snd_pcm_lib_ioctl,
826 .hw_params = snd_via82xx_hw_params,
827 .hw_free = snd_via82xx_hw_free,
828 .prepare = snd_via82xx_pcm_prepare,
829 .trigger = snd_via82xx_pcm_trigger,
830 .pointer = snd_via686_pcm_pointer,
831 .page = snd_pcm_sgbuf_ops_page,
832};
833
834
835static void init_viadev(struct via82xx_modem *chip, int idx, unsigned int reg_offset,
836 int direction)
837{
838 chip->devs[idx].reg_offset = reg_offset;
839 chip->devs[idx].direction = direction;
840 chip->devs[idx].port = chip->port + reg_offset;
841}
842
843
844
845
846static int snd_via686_pcm_new(struct via82xx_modem *chip)
847{
848 struct snd_pcm *pcm;
849 int err;
850
851 chip->playback_devno = 0;
852 chip->capture_devno = 1;
853 chip->num_devs = 2;
854 chip->intr_mask = 0x330000;
855
856 err = snd_pcm_new(chip->card, chip->card->shortname, 0, 1, 1, &pcm);
857 if (err < 0)
858 return err;
859 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via686_playback_ops);
860 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via686_capture_ops);
861 pcm->dev_class = SNDRV_PCM_CLASS_MODEM;
862 pcm->private_data = chip;
863 strcpy(pcm->name, chip->card->shortname);
864 chip->pcms[0] = pcm;
865 init_viadev(chip, 0, VIA_REG_MO_STATUS, 0);
866 init_viadev(chip, 1, VIA_REG_MI_STATUS, 1);
867
868 if ((err = snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
869 snd_dma_pci_data(chip->pci),
870 64*1024, 128*1024)) < 0)
871 return err;
872
873 return 0;
874}
875
876
877
878
879
880
881
882static void snd_via82xx_mixer_free_ac97_bus(struct snd_ac97_bus *bus)
883{
884 struct via82xx_modem *chip = bus->private_data;
885 chip->ac97_bus = NULL;
886}
887
888static void snd_via82xx_mixer_free_ac97(struct snd_ac97 *ac97)
889{
890 struct via82xx_modem *chip = ac97->private_data;
891 chip->ac97 = NULL;
892}
893
894
895static int snd_via82xx_mixer_new(struct via82xx_modem *chip)
896{
897 struct snd_ac97_template ac97;
898 int err;
899 static struct snd_ac97_bus_ops ops = {
900 .write = snd_via82xx_codec_write,
901 .read = snd_via82xx_codec_read,
902 .wait = snd_via82xx_codec_wait,
903 };
904
905 if ((err = snd_ac97_bus(chip->card, 0, &ops, chip, &chip->ac97_bus)) < 0)
906 return err;
907 chip->ac97_bus->private_free = snd_via82xx_mixer_free_ac97_bus;
908 chip->ac97_bus->clock = chip->ac97_clock;
909
910 memset(&ac97, 0, sizeof(ac97));
911 ac97.private_data = chip;
912 ac97.private_free = snd_via82xx_mixer_free_ac97;
913 ac97.pci = chip->pci;
914 ac97.scaps = AC97_SCAP_SKIP_AUDIO | AC97_SCAP_POWER_SAVE;
915 ac97.num = chip->ac97_secondary;
916
917 if ((err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97)) < 0)
918 return err;
919
920 return 0;
921}
922
923
924
925
926
927static void snd_via82xx_proc_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer)
928{
929 struct via82xx_modem *chip = entry->private_data;
930 int i;
931
932 snd_iprintf(buffer, "%s\n\n", chip->card->longname);
933 for (i = 0; i < 0xa0; i += 4) {
934 snd_iprintf(buffer, "%02x: %08x\n", i, inl(chip->port + i));
935 }
936}
937
938static void snd_via82xx_proc_init(struct via82xx_modem *chip)
939{
940 struct snd_info_entry *entry;
941
942 if (! snd_card_proc_new(chip->card, "via82xx", &entry))
943 snd_info_set_text_ops(entry, chip, snd_via82xx_proc_read);
944}
945
946
947
948
949
950static int snd_via82xx_chip_init(struct via82xx_modem *chip)
951{
952 unsigned int val;
953 unsigned long end_time;
954 unsigned char pval;
955
956 pci_read_config_byte(chip->pci, VIA_MC97_CTRL, &pval);
957 if((pval & VIA_MC97_CTRL_INIT) != VIA_MC97_CTRL_INIT) {
958 pci_write_config_byte(chip->pci, 0x44, pval|VIA_MC97_CTRL_INIT);
959 udelay(100);
960 }
961
962 pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval);
963 if (! (pval & VIA_ACLINK_C00_READY)) {
964
965 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL,
966 VIA_ACLINK_CTRL_ENABLE |
967 VIA_ACLINK_CTRL_RESET |
968 VIA_ACLINK_CTRL_SYNC);
969 udelay(100);
970#if 1
971 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, 0x00);
972 udelay(100);
973#else
974
975 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL,
976 VIA_ACLINK_CTRL_RESET|VIA_ACLINK_CTRL_SYNC);
977 udelay(2);
978#endif
979
980 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT);
981 udelay(100);
982 }
983
984 pci_read_config_byte(chip->pci, VIA_ACLINK_CTRL, &pval);
985 if ((pval & VIA_ACLINK_CTRL_INIT) != VIA_ACLINK_CTRL_INIT) {
986
987 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT);
988 udelay(100);
989 }
990
991
992 end_time = jiffies + msecs_to_jiffies(750);
993 do {
994 pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval);
995 if (pval & VIA_ACLINK_C00_READY)
996 break;
997 schedule_timeout_uninterruptible(1);
998 } while (time_before(jiffies, end_time));
999
1000 if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY)
1001 dev_err(chip->card->dev,
1002 "AC'97 codec is not ready [0x%x]\n", val);
1003
1004 snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ |
1005 VIA_REG_AC97_SECONDARY_VALID |
1006 (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT));
1007 end_time = jiffies + msecs_to_jiffies(750);
1008 snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ |
1009 VIA_REG_AC97_SECONDARY_VALID |
1010 (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT));
1011 do {
1012 if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_SECONDARY_VALID) {
1013 chip->ac97_secondary = 1;
1014 goto __ac97_ok2;
1015 }
1016 schedule_timeout_uninterruptible(1);
1017 } while (time_before(jiffies, end_time));
1018
1019
1020 __ac97_ok2:
1021
1022
1023
1024
1025 outl(0, VIAREG(chip, GPI_INTR));
1026
1027 return 0;
1028}
1029
1030#ifdef CONFIG_PM_SLEEP
1031
1032
1033
1034static int snd_via82xx_suspend(struct device *dev)
1035{
1036 struct snd_card *card = dev_get_drvdata(dev);
1037 struct via82xx_modem *chip = card->private_data;
1038 int i;
1039
1040 snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
1041 for (i = 0; i < 2; i++)
1042 snd_pcm_suspend_all(chip->pcms[i]);
1043 for (i = 0; i < chip->num_devs; i++)
1044 snd_via82xx_channel_reset(chip, &chip->devs[i]);
1045 synchronize_irq(chip->irq);
1046 snd_ac97_suspend(chip->ac97);
1047 return 0;
1048}
1049
1050static int snd_via82xx_resume(struct device *dev)
1051{
1052 struct snd_card *card = dev_get_drvdata(dev);
1053 struct via82xx_modem *chip = card->private_data;
1054 int i;
1055
1056 snd_via82xx_chip_init(chip);
1057
1058 snd_ac97_resume(chip->ac97);
1059
1060 for (i = 0; i < chip->num_devs; i++)
1061 snd_via82xx_channel_reset(chip, &chip->devs[i]);
1062
1063 snd_power_change_state(card, SNDRV_CTL_POWER_D0);
1064 return 0;
1065}
1066
1067static SIMPLE_DEV_PM_OPS(snd_via82xx_pm, snd_via82xx_suspend, snd_via82xx_resume);
1068#define SND_VIA82XX_PM_OPS &snd_via82xx_pm
1069#else
1070#define SND_VIA82XX_PM_OPS NULL
1071#endif
1072
1073static int snd_via82xx_free(struct via82xx_modem *chip)
1074{
1075 unsigned int i;
1076
1077 if (chip->irq < 0)
1078 goto __end_hw;
1079
1080 for (i = 0; i < chip->num_devs; i++)
1081 snd_via82xx_channel_reset(chip, &chip->devs[i]);
1082
1083 __end_hw:
1084 if (chip->irq >= 0)
1085 free_irq(chip->irq, chip);
1086 pci_release_regions(chip->pci);
1087 pci_disable_device(chip->pci);
1088 kfree(chip);
1089 return 0;
1090}
1091
1092static int snd_via82xx_dev_free(struct snd_device *device)
1093{
1094 struct via82xx_modem *chip = device->device_data;
1095 return snd_via82xx_free(chip);
1096}
1097
1098static int snd_via82xx_create(struct snd_card *card,
1099 struct pci_dev *pci,
1100 int chip_type,
1101 int revision,
1102 unsigned int ac97_clock,
1103 struct via82xx_modem **r_via)
1104{
1105 struct via82xx_modem *chip;
1106 int err;
1107 static struct snd_device_ops ops = {
1108 .dev_free = snd_via82xx_dev_free,
1109 };
1110
1111 if ((err = pci_enable_device(pci)) < 0)
1112 return err;
1113
1114 if ((chip = kzalloc(sizeof(*chip), GFP_KERNEL)) == NULL) {
1115 pci_disable_device(pci);
1116 return -ENOMEM;
1117 }
1118
1119 spin_lock_init(&chip->reg_lock);
1120 chip->card = card;
1121 chip->pci = pci;
1122 chip->irq = -1;
1123
1124 if ((err = pci_request_regions(pci, card->driver)) < 0) {
1125 kfree(chip);
1126 pci_disable_device(pci);
1127 return err;
1128 }
1129 chip->port = pci_resource_start(pci, 0);
1130 if (request_irq(pci->irq, snd_via82xx_interrupt, IRQF_SHARED,
1131 KBUILD_MODNAME, chip)) {
1132 dev_err(card->dev, "unable to grab IRQ %d\n", pci->irq);
1133 snd_via82xx_free(chip);
1134 return -EBUSY;
1135 }
1136 chip->irq = pci->irq;
1137 if (ac97_clock >= 8000 && ac97_clock <= 48000)
1138 chip->ac97_clock = ac97_clock;
1139 synchronize_irq(chip->irq);
1140
1141 if ((err = snd_via82xx_chip_init(chip)) < 0) {
1142 snd_via82xx_free(chip);
1143 return err;
1144 }
1145
1146 if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
1147 snd_via82xx_free(chip);
1148 return err;
1149 }
1150
1151
1152
1153
1154 pci_set_master(pci);
1155
1156 *r_via = chip;
1157 return 0;
1158}
1159
1160
1161static int snd_via82xx_probe(struct pci_dev *pci,
1162 const struct pci_device_id *pci_id)
1163{
1164 struct snd_card *card;
1165 struct via82xx_modem *chip;
1166 int chip_type = 0, card_type;
1167 unsigned int i;
1168 int err;
1169
1170 err = snd_card_new(&pci->dev, index, id, THIS_MODULE, 0, &card);
1171 if (err < 0)
1172 return err;
1173
1174 card_type = pci_id->driver_data;
1175 switch (card_type) {
1176 case TYPE_CARD_VIA82XX_MODEM:
1177 strcpy(card->driver, "VIA82XX-MODEM");
1178 sprintf(card->shortname, "VIA 82XX modem");
1179 break;
1180 default:
1181 dev_err(card->dev, "invalid card type %d\n", card_type);
1182 err = -EINVAL;
1183 goto __error;
1184 }
1185
1186 if ((err = snd_via82xx_create(card, pci, chip_type, pci->revision,
1187 ac97_clock, &chip)) < 0)
1188 goto __error;
1189 card->private_data = chip;
1190 if ((err = snd_via82xx_mixer_new(chip)) < 0)
1191 goto __error;
1192
1193 if ((err = snd_via686_pcm_new(chip)) < 0 )
1194 goto __error;
1195
1196
1197 for (i = 0; i < chip->num_devs; i++)
1198 snd_via82xx_channel_reset(chip, &chip->devs[i]);
1199
1200 sprintf(card->longname, "%s at 0x%lx, irq %d",
1201 card->shortname, chip->port, chip->irq);
1202
1203 snd_via82xx_proc_init(chip);
1204
1205 if ((err = snd_card_register(card)) < 0) {
1206 snd_card_free(card);
1207 return err;
1208 }
1209 pci_set_drvdata(pci, card);
1210 return 0;
1211
1212 __error:
1213 snd_card_free(card);
1214 return err;
1215}
1216
1217static void snd_via82xx_remove(struct pci_dev *pci)
1218{
1219 snd_card_free(pci_get_drvdata(pci));
1220}
1221
1222static struct pci_driver via82xx_modem_driver = {
1223 .name = KBUILD_MODNAME,
1224 .id_table = snd_via82xx_modem_ids,
1225 .probe = snd_via82xx_probe,
1226 .remove = snd_via82xx_remove,
1227 .driver = {
1228 .pm = SND_VIA82XX_PM_OPS,
1229 },
1230};
1231
1232module_pci_driver(via82xx_modem_driver);
1233
