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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(sizeof(*dev->idx_table) * VIA_TABLE_SIZE, GFP_KERNEL);
296 if (! dev->idx_table)
297 return -ENOMEM;
298 }
299
300
301 idx = 0;
302 ofs = 0;
303 for (i = 0; i < periods; i++) {
304 rest = fragsize;
305
306
307
308
309 do {
310 unsigned int r;
311 unsigned int flag;
312 unsigned int addr;
313
314 if (idx >= VIA_TABLE_SIZE) {
315 dev_err(&pci->dev, "too much table size!\n");
316 return -EINVAL;
317 }
318 addr = snd_pcm_sgbuf_get_addr(substream, ofs);
319 ((u32 *)dev->table.area)[idx << 1] = cpu_to_le32(addr);
320 r = PAGE_SIZE - (ofs % PAGE_SIZE);
321 if (rest < r)
322 r = rest;
323 rest -= r;
324 if (! rest) {
325 if (i == periods - 1)
326 flag = VIA_TBL_BIT_EOL;
327 else
328 flag = VIA_TBL_BIT_FLAG;
329 } else
330 flag = 0;
331
332
333
334
335
336 ((u32 *)dev->table.area)[(idx<<1) + 1] = cpu_to_le32(r | flag);
337 dev->idx_table[idx].offset = ofs;
338 dev->idx_table[idx].size = r;
339 ofs += r;
340 idx++;
341 } while (rest > 0);
342 }
343 dev->tbl_entries = idx;
344 dev->bufsize = periods * fragsize;
345 dev->bufsize2 = dev->bufsize / 2;
346 return 0;
347}
348
349
350static int clean_via_table(struct viadev *dev, struct snd_pcm_substream *substream,
351 struct pci_dev *pci)
352{
353 if (dev->table.area) {
354 snd_dma_free_pages(&dev->table);
355 dev->table.area = NULL;
356 }
357 kfree(dev->idx_table);
358 dev->idx_table = NULL;
359 return 0;
360}
361
362
363
364
365
366static inline unsigned int snd_via82xx_codec_xread(struct via82xx_modem *chip)
367{
368 return inl(VIAREG(chip, AC97));
369}
370
371static inline void snd_via82xx_codec_xwrite(struct via82xx_modem *chip, unsigned int val)
372{
373 outl(val, VIAREG(chip, AC97));
374}
375
376static int snd_via82xx_codec_ready(struct via82xx_modem *chip, int secondary)
377{
378 unsigned int timeout = 1000;
379 unsigned int val;
380
381 while (timeout-- > 0) {
382 udelay(1);
383 if (!((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY))
384 return val & 0xffff;
385 }
386 dev_err(chip->card->dev, "codec_ready: codec %i is not ready [0x%x]\n",
387 secondary, snd_via82xx_codec_xread(chip));
388 return -EIO;
389}
390
391static int snd_via82xx_codec_valid(struct via82xx_modem *chip, int secondary)
392{
393 unsigned int timeout = 1000;
394 unsigned int val, val1;
395 unsigned int stat = !secondary ? VIA_REG_AC97_PRIMARY_VALID :
396 VIA_REG_AC97_SECONDARY_VALID;
397
398 while (timeout-- > 0) {
399 val = snd_via82xx_codec_xread(chip);
400 val1 = val & (VIA_REG_AC97_BUSY | stat);
401 if (val1 == stat)
402 return val & 0xffff;
403 udelay(1);
404 }
405 return -EIO;
406}
407
408static void snd_via82xx_codec_wait(struct snd_ac97 *ac97)
409{
410 struct via82xx_modem *chip = ac97->private_data;
411 int err;
412 err = snd_via82xx_codec_ready(chip, ac97->num);
413
414 msleep(500);
415}
416
417static void snd_via82xx_codec_write(struct snd_ac97 *ac97,
418 unsigned short reg,
419 unsigned short val)
420{
421 struct via82xx_modem *chip = ac97->private_data;
422 unsigned int xval;
423 if(reg == AC97_GPIO_STATUS) {
424 outl(val, VIAREG(chip, GPI_STATUS));
425 return;
426 }
427 xval = !ac97->num ? VIA_REG_AC97_CODEC_ID_PRIMARY : VIA_REG_AC97_CODEC_ID_SECONDARY;
428 xval <<= VIA_REG_AC97_CODEC_ID_SHIFT;
429 xval |= reg << VIA_REG_AC97_CMD_SHIFT;
430 xval |= val << VIA_REG_AC97_DATA_SHIFT;
431 snd_via82xx_codec_xwrite(chip, xval);
432 snd_via82xx_codec_ready(chip, ac97->num);
433}
434
435static unsigned short snd_via82xx_codec_read(struct snd_ac97 *ac97, unsigned short reg)
436{
437 struct via82xx_modem *chip = ac97->private_data;
438 unsigned int xval, val = 0xffff;
439 int again = 0;
440
441 xval = ac97->num << VIA_REG_AC97_CODEC_ID_SHIFT;
442 xval |= ac97->num ? VIA_REG_AC97_SECONDARY_VALID : VIA_REG_AC97_PRIMARY_VALID;
443 xval |= VIA_REG_AC97_READ;
444 xval |= (reg & 0x7f) << VIA_REG_AC97_CMD_SHIFT;
445 while (1) {
446 if (again++ > 3) {
447 dev_err(chip->card->dev,
448 "codec_read: codec %i is not valid [0x%x]\n",
449 ac97->num, snd_via82xx_codec_xread(chip));
450 return 0xffff;
451 }
452 snd_via82xx_codec_xwrite(chip, xval);
453 udelay (20);
454 if (snd_via82xx_codec_valid(chip, ac97->num) >= 0) {
455 udelay(25);
456 val = snd_via82xx_codec_xread(chip);
457 break;
458 }
459 }
460 return val & 0xffff;
461}
462
463static void snd_via82xx_channel_reset(struct via82xx_modem *chip, struct viadev *viadev)
464{
465 outb(VIA_REG_CTRL_PAUSE | VIA_REG_CTRL_TERMINATE | VIA_REG_CTRL_RESET,
466 VIADEV_REG(viadev, OFFSET_CONTROL));
467 inb(VIADEV_REG(viadev, OFFSET_CONTROL));
468 udelay(50);
469
470 outb(0x00, VIADEV_REG(viadev, OFFSET_CONTROL));
471
472 outb(0x03, VIADEV_REG(viadev, OFFSET_STATUS));
473 outb(0x00, VIADEV_REG(viadev, OFFSET_TYPE));
474
475 viadev->lastpos = 0;
476}
477
478
479
480
481
482
483static irqreturn_t snd_via82xx_interrupt(int irq, void *dev_id)
484{
485 struct via82xx_modem *chip = dev_id;
486 unsigned int status;
487 unsigned int i;
488
489 status = inl(VIAREG(chip, SGD_SHADOW));
490 if (! (status & chip->intr_mask)) {
491 return IRQ_NONE;
492 }
493
494
495
496 spin_lock(&chip->reg_lock);
497 for (i = 0; i < chip->num_devs; i++) {
498 struct viadev *viadev = &chip->devs[i];
499 unsigned char c_status = inb(VIADEV_REG(viadev, OFFSET_STATUS));
500 c_status &= (VIA_REG_STAT_EOL|VIA_REG_STAT_FLAG|VIA_REG_STAT_STOPPED);
501 if (! c_status)
502 continue;
503 if (viadev->substream && viadev->running) {
504 spin_unlock(&chip->reg_lock);
505 snd_pcm_period_elapsed(viadev->substream);
506 spin_lock(&chip->reg_lock);
507 }
508 outb(c_status, VIADEV_REG(viadev, OFFSET_STATUS));
509 }
510 spin_unlock(&chip->reg_lock);
511 return IRQ_HANDLED;
512}
513
514
515
516
517
518
519
520
521static int snd_via82xx_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
522{
523 struct via82xx_modem *chip = snd_pcm_substream_chip(substream);
524 struct viadev *viadev = substream->runtime->private_data;
525 unsigned char val = 0;
526
527 switch (cmd) {
528 case SNDRV_PCM_TRIGGER_START:
529 case SNDRV_PCM_TRIGGER_SUSPEND:
530 val |= VIA_REG_CTRL_START;
531 viadev->running = 1;
532 break;
533 case SNDRV_PCM_TRIGGER_STOP:
534 val = VIA_REG_CTRL_TERMINATE;
535 viadev->running = 0;
536 break;
537 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
538 val |= VIA_REG_CTRL_PAUSE;
539 viadev->running = 0;
540 break;
541 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
542 viadev->running = 1;
543 break;
544 default:
545 return -EINVAL;
546 }
547 outb(val, VIADEV_REG(viadev, OFFSET_CONTROL));
548 if (cmd == SNDRV_PCM_TRIGGER_STOP)
549 snd_via82xx_channel_reset(chip, viadev);
550 return 0;
551}
552
553
554
555
556
557
558
559
560
561#define check_invalid_pos(viadev,pos) \
562 ((pos) < viadev->lastpos && ((pos) >= viadev->bufsize2 ||\
563 viadev->lastpos < viadev->bufsize2))
564
565static inline unsigned int calc_linear_pos(struct via82xx_modem *chip,
566 struct viadev *viadev,
567 unsigned int idx,
568 unsigned int count)
569{
570 unsigned int size, res;
571
572 size = viadev->idx_table[idx].size;
573 res = viadev->idx_table[idx].offset + size - count;
574
575
576 if (size < count) {
577 dev_err(chip->card->dev,
578 "invalid via82xx_cur_ptr (size = %d, count = %d)\n",
579 (int)size, (int)count);
580 res = viadev->lastpos;
581 } else if (check_invalid_pos(viadev, res)) {
582#ifdef POINTER_DEBUG
583 dev_dbg(chip->card->dev,
584 "fail: idx = %i/%i, lastpos = 0x%x, bufsize2 = 0x%x, offsize = 0x%x, size = 0x%x, count = 0x%x\n",
585 idx, viadev->tbl_entries, viadev->lastpos,
586 viadev->bufsize2, viadev->idx_table[idx].offset,
587 viadev->idx_table[idx].size, count);
588#endif
589 if (count && size < count) {
590 dev_dbg(chip->card->dev,
591 "invalid via82xx_cur_ptr, using last valid pointer\n");
592 res = viadev->lastpos;
593 } else {
594 if (! count)
595
596 res = viadev->idx_table[idx].offset;
597 else
598
599
600
601 res = viadev->idx_table[idx].offset + size;
602 if (check_invalid_pos(viadev, res)) {
603 dev_dbg(chip->card->dev,
604 "invalid via82xx_cur_ptr (2), using last valid pointer\n");
605 res = viadev->lastpos;
606 }
607 }
608 }
609 viadev->lastpos = res;
610 if (res >= viadev->bufsize)
611 res -= viadev->bufsize;
612 return res;
613}
614
615
616
617
618static snd_pcm_uframes_t snd_via686_pcm_pointer(struct snd_pcm_substream *substream)
619{
620 struct via82xx_modem *chip = snd_pcm_substream_chip(substream);
621 struct viadev *viadev = substream->runtime->private_data;
622 unsigned int idx, ptr, count, res;
623
624 if (snd_BUG_ON(!viadev->tbl_entries))
625 return 0;
626 if (!(inb(VIADEV_REG(viadev, OFFSET_STATUS)) & VIA_REG_STAT_ACTIVE))
627 return 0;
628
629 spin_lock(&chip->reg_lock);
630 count = inl(VIADEV_REG(viadev, OFFSET_CURR_COUNT)) & 0xffffff;
631
632
633
634 ptr = inl(VIADEV_REG(viadev, OFFSET_CURR_PTR));
635 if (ptr <= (unsigned int)viadev->table.addr)
636 idx = 0;
637 else
638 idx = ((ptr - (unsigned int)viadev->table.addr) / 8 - 1) %
639 viadev->tbl_entries;
640 res = calc_linear_pos(chip, viadev, idx, count);
641 spin_unlock(&chip->reg_lock);
642
643 return bytes_to_frames(substream->runtime, res);
644}
645
646
647
648
649
650static int snd_via82xx_hw_params(struct snd_pcm_substream *substream,
651 struct snd_pcm_hw_params *hw_params)
652{
653 struct via82xx_modem *chip = snd_pcm_substream_chip(substream);
654 struct viadev *viadev = substream->runtime->private_data;
655 int err;
656
657 err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
658 if (err < 0)
659 return err;
660 err = build_via_table(viadev, substream, chip->pci,
661 params_periods(hw_params),
662 params_period_bytes(hw_params));
663 if (err < 0)
664 return err;
665
666 snd_ac97_write(chip->ac97, AC97_LINE1_RATE, params_rate(hw_params));
667 snd_ac97_write(chip->ac97, AC97_LINE1_LEVEL, 0);
668
669 return 0;
670}
671
672
673
674
675
676static int snd_via82xx_hw_free(struct snd_pcm_substream *substream)
677{
678 struct via82xx_modem *chip = snd_pcm_substream_chip(substream);
679 struct viadev *viadev = substream->runtime->private_data;
680
681 clean_via_table(viadev, substream, chip->pci);
682 snd_pcm_lib_free_pages(substream);
683 return 0;
684}
685
686
687
688
689
690static void snd_via82xx_set_table_ptr(struct via82xx_modem *chip, struct viadev *viadev)
691{
692 snd_via82xx_codec_ready(chip, chip->ac97_secondary);
693 outl((u32)viadev->table.addr, VIADEV_REG(viadev, OFFSET_TABLE_PTR));
694 udelay(20);
695 snd_via82xx_codec_ready(chip, chip->ac97_secondary);
696}
697
698
699
700
701static int snd_via82xx_pcm_prepare(struct snd_pcm_substream *substream)
702{
703 struct via82xx_modem *chip = snd_pcm_substream_chip(substream);
704 struct viadev *viadev = substream->runtime->private_data;
705
706 snd_via82xx_channel_reset(chip, viadev);
707
708 snd_via82xx_set_table_ptr(chip, viadev);
709 outb(VIA_REG_TYPE_AUTOSTART|VIA_REG_TYPE_INT_EOL|VIA_REG_TYPE_INT_FLAG,
710 VIADEV_REG(viadev, OFFSET_TYPE));
711 return 0;
712}
713
714
715
716
717static struct snd_pcm_hardware snd_via82xx_hw =
718{
719 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
720 SNDRV_PCM_INFO_BLOCK_TRANSFER |
721 SNDRV_PCM_INFO_MMAP_VALID |
722
723 SNDRV_PCM_INFO_PAUSE),
724 .formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE,
725 .rates = SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_KNOT,
726 .rate_min = 8000,
727 .rate_max = 16000,
728 .channels_min = 1,
729 .channels_max = 1,
730 .buffer_bytes_max = 128 * 1024,
731 .period_bytes_min = 32,
732 .period_bytes_max = 128 * 1024,
733 .periods_min = 2,
734 .periods_max = VIA_TABLE_SIZE / 2,
735 .fifo_size = 0,
736};
737
738
739
740
741
742static int snd_via82xx_modem_pcm_open(struct via82xx_modem *chip, struct viadev *viadev,
743 struct snd_pcm_substream *substream)
744{
745 struct snd_pcm_runtime *runtime = substream->runtime;
746 int err;
747 static const unsigned int rates[] = { 8000, 9600, 12000, 16000 };
748 static const struct snd_pcm_hw_constraint_list hw_constraints_rates = {
749 .count = ARRAY_SIZE(rates),
750 .list = rates,
751 .mask = 0,
752 };
753
754 runtime->hw = snd_via82xx_hw;
755
756 if ((err = snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
757 &hw_constraints_rates)) < 0)
758 return err;
759
760
761
762 if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
763 return err;
764
765 runtime->private_data = viadev;
766 viadev->substream = substream;
767
768 return 0;
769}
770
771
772
773
774
775static int snd_via82xx_playback_open(struct snd_pcm_substream *substream)
776{
777 struct via82xx_modem *chip = snd_pcm_substream_chip(substream);
778 struct viadev *viadev = &chip->devs[chip->playback_devno + substream->number];
779
780 return snd_via82xx_modem_pcm_open(chip, viadev, substream);
781}
782
783
784
785
786static int snd_via82xx_capture_open(struct snd_pcm_substream *substream)
787{
788 struct via82xx_modem *chip = snd_pcm_substream_chip(substream);
789 struct viadev *viadev = &chip->devs[chip->capture_devno + substream->pcm->device];
790
791 return snd_via82xx_modem_pcm_open(chip, viadev, substream);
792}
793
794
795
796
797static int snd_via82xx_pcm_close(struct snd_pcm_substream *substream)
798{
799 struct viadev *viadev = substream->runtime->private_data;
800
801 viadev->substream = NULL;
802 return 0;
803}
804
805
806
807static const struct snd_pcm_ops snd_via686_playback_ops = {
808 .open = snd_via82xx_playback_open,
809 .close = snd_via82xx_pcm_close,
810 .ioctl = snd_pcm_lib_ioctl,
811 .hw_params = snd_via82xx_hw_params,
812 .hw_free = snd_via82xx_hw_free,
813 .prepare = snd_via82xx_pcm_prepare,
814 .trigger = snd_via82xx_pcm_trigger,
815 .pointer = snd_via686_pcm_pointer,
816 .page = snd_pcm_sgbuf_ops_page,
817};
818
819
820static const struct snd_pcm_ops snd_via686_capture_ops = {
821 .open = snd_via82xx_capture_open,
822 .close = snd_via82xx_pcm_close,
823 .ioctl = snd_pcm_lib_ioctl,
824 .hw_params = snd_via82xx_hw_params,
825 .hw_free = snd_via82xx_hw_free,
826 .prepare = snd_via82xx_pcm_prepare,
827 .trigger = snd_via82xx_pcm_trigger,
828 .pointer = snd_via686_pcm_pointer,
829 .page = snd_pcm_sgbuf_ops_page,
830};
831
832
833static void init_viadev(struct via82xx_modem *chip, int idx, unsigned int reg_offset,
834 int direction)
835{
836 chip->devs[idx].reg_offset = reg_offset;
837 chip->devs[idx].direction = direction;
838 chip->devs[idx].port = chip->port + reg_offset;
839}
840
841
842
843
844static int snd_via686_pcm_new(struct via82xx_modem *chip)
845{
846 struct snd_pcm *pcm;
847 int err;
848
849 chip->playback_devno = 0;
850 chip->capture_devno = 1;
851 chip->num_devs = 2;
852 chip->intr_mask = 0x330000;
853
854 err = snd_pcm_new(chip->card, chip->card->shortname, 0, 1, 1, &pcm);
855 if (err < 0)
856 return err;
857 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via686_playback_ops);
858 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via686_capture_ops);
859 pcm->dev_class = SNDRV_PCM_CLASS_MODEM;
860 pcm->private_data = chip;
861 strcpy(pcm->name, chip->card->shortname);
862 chip->pcms[0] = pcm;
863 init_viadev(chip, 0, VIA_REG_MO_STATUS, 0);
864 init_viadev(chip, 1, VIA_REG_MI_STATUS, 1);
865
866 if ((err = snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
867 snd_dma_pci_data(chip->pci),
868 64*1024, 128*1024)) < 0)
869 return err;
870
871 return 0;
872}
873
874
875
876
877
878
879
880static void snd_via82xx_mixer_free_ac97_bus(struct snd_ac97_bus *bus)
881{
882 struct via82xx_modem *chip = bus->private_data;
883 chip->ac97_bus = NULL;
884}
885
886static void snd_via82xx_mixer_free_ac97(struct snd_ac97 *ac97)
887{
888 struct via82xx_modem *chip = ac97->private_data;
889 chip->ac97 = NULL;
890}
891
892
893static int snd_via82xx_mixer_new(struct via82xx_modem *chip)
894{
895 struct snd_ac97_template ac97;
896 int err;
897 static struct snd_ac97_bus_ops ops = {
898 .write = snd_via82xx_codec_write,
899 .read = snd_via82xx_codec_read,
900 .wait = snd_via82xx_codec_wait,
901 };
902
903 if ((err = snd_ac97_bus(chip->card, 0, &ops, chip, &chip->ac97_bus)) < 0)
904 return err;
905 chip->ac97_bus->private_free = snd_via82xx_mixer_free_ac97_bus;
906 chip->ac97_bus->clock = chip->ac97_clock;
907
908 memset(&ac97, 0, sizeof(ac97));
909 ac97.private_data = chip;
910 ac97.private_free = snd_via82xx_mixer_free_ac97;
911 ac97.pci = chip->pci;
912 ac97.scaps = AC97_SCAP_SKIP_AUDIO | AC97_SCAP_POWER_SAVE;
913 ac97.num = chip->ac97_secondary;
914
915 if ((err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97)) < 0)
916 return err;
917
918 return 0;
919}
920
921
922
923
924
925static void snd_via82xx_proc_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer)
926{
927 struct via82xx_modem *chip = entry->private_data;
928 int i;
929
930 snd_iprintf(buffer, "%s\n\n", chip->card->longname);
931 for (i = 0; i < 0xa0; i += 4) {
932 snd_iprintf(buffer, "%02x: %08x\n", i, inl(chip->port + i));
933 }
934}
935
936static void snd_via82xx_proc_init(struct via82xx_modem *chip)
937{
938 struct snd_info_entry *entry;
939
940 if (! snd_card_proc_new(chip->card, "via82xx", &entry))
941 snd_info_set_text_ops(entry, chip, snd_via82xx_proc_read);
942}
943
944
945
946
947
948static int snd_via82xx_chip_init(struct via82xx_modem *chip)
949{
950 unsigned int val;
951 unsigned long end_time;
952 unsigned char pval;
953
954 pci_read_config_byte(chip->pci, VIA_MC97_CTRL, &pval);
955 if((pval & VIA_MC97_CTRL_INIT) != VIA_MC97_CTRL_INIT) {
956 pci_write_config_byte(chip->pci, 0x44, pval|VIA_MC97_CTRL_INIT);
957 udelay(100);
958 }
959
960 pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval);
961 if (! (pval & VIA_ACLINK_C00_READY)) {
962
963 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL,
964 VIA_ACLINK_CTRL_ENABLE |
965 VIA_ACLINK_CTRL_RESET |
966 VIA_ACLINK_CTRL_SYNC);
967 udelay(100);
968#if 1
969 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, 0x00);
970 udelay(100);
971#else
972
973 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL,
974 VIA_ACLINK_CTRL_RESET|VIA_ACLINK_CTRL_SYNC);
975 udelay(2);
976#endif
977
978 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT);
979 udelay(100);
980 }
981
982 pci_read_config_byte(chip->pci, VIA_ACLINK_CTRL, &pval);
983 if ((pval & VIA_ACLINK_CTRL_INIT) != VIA_ACLINK_CTRL_INIT) {
984
985 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT);
986 udelay(100);
987 }
988
989
990 end_time = jiffies + msecs_to_jiffies(750);
991 do {
992 pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval);
993 if (pval & VIA_ACLINK_C00_READY)
994 break;
995 schedule_timeout_uninterruptible(1);
996 } while (time_before(jiffies, end_time));
997
998 if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY)
999 dev_err(chip->card->dev,
1000 "AC'97 codec is not ready [0x%x]\n", val);
1001
1002 snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ |
1003 VIA_REG_AC97_SECONDARY_VALID |
1004 (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT));
1005 end_time = jiffies + msecs_to_jiffies(750);
1006 snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ |
1007 VIA_REG_AC97_SECONDARY_VALID |
1008 (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT));
1009 do {
1010 if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_SECONDARY_VALID) {
1011 chip->ac97_secondary = 1;
1012 goto __ac97_ok2;
1013 }
1014 schedule_timeout_uninterruptible(1);
1015 } while (time_before(jiffies, end_time));
1016
1017
1018 __ac97_ok2:
1019
1020
1021
1022
1023 outl(0, VIAREG(chip, GPI_INTR));
1024
1025 return 0;
1026}
1027
1028#ifdef CONFIG_PM_SLEEP
1029
1030
1031
1032static int snd_via82xx_suspend(struct device *dev)
1033{
1034 struct snd_card *card = dev_get_drvdata(dev);
1035 struct via82xx_modem *chip = card->private_data;
1036 int i;
1037
1038 snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
1039 for (i = 0; i < 2; i++)
1040 snd_pcm_suspend_all(chip->pcms[i]);
1041 for (i = 0; i < chip->num_devs; i++)
1042 snd_via82xx_channel_reset(chip, &chip->devs[i]);
1043 synchronize_irq(chip->irq);
1044 snd_ac97_suspend(chip->ac97);
1045 return 0;
1046}
1047
1048static int snd_via82xx_resume(struct device *dev)
1049{
1050 struct snd_card *card = dev_get_drvdata(dev);
1051 struct via82xx_modem *chip = card->private_data;
1052 int i;
1053
1054 snd_via82xx_chip_init(chip);
1055
1056 snd_ac97_resume(chip->ac97);
1057
1058 for (i = 0; i < chip->num_devs; i++)
1059 snd_via82xx_channel_reset(chip, &chip->devs[i]);
1060
1061 snd_power_change_state(card, SNDRV_CTL_POWER_D0);
1062 return 0;
1063}
1064
1065static SIMPLE_DEV_PM_OPS(snd_via82xx_pm, snd_via82xx_suspend, snd_via82xx_resume);
1066#define SND_VIA82XX_PM_OPS &snd_via82xx_pm
1067#else
1068#define SND_VIA82XX_PM_OPS NULL
1069#endif
1070
1071static int snd_via82xx_free(struct via82xx_modem *chip)
1072{
1073 unsigned int i;
1074
1075 if (chip->irq < 0)
1076 goto __end_hw;
1077
1078 for (i = 0; i < chip->num_devs; i++)
1079 snd_via82xx_channel_reset(chip, &chip->devs[i]);
1080
1081 __end_hw:
1082 if (chip->irq >= 0)
1083 free_irq(chip->irq, chip);
1084 pci_release_regions(chip->pci);
1085 pci_disable_device(chip->pci);
1086 kfree(chip);
1087 return 0;
1088}
1089
1090static int snd_via82xx_dev_free(struct snd_device *device)
1091{
1092 struct via82xx_modem *chip = device->device_data;
1093 return snd_via82xx_free(chip);
1094}
1095
1096static int snd_via82xx_create(struct snd_card *card,
1097 struct pci_dev *pci,
1098 int chip_type,
1099 int revision,
1100 unsigned int ac97_clock,
1101 struct via82xx_modem **r_via)
1102{
1103 struct via82xx_modem *chip;
1104 int err;
1105 static struct snd_device_ops ops = {
1106 .dev_free = snd_via82xx_dev_free,
1107 };
1108
1109 if ((err = pci_enable_device(pci)) < 0)
1110 return err;
1111
1112 if ((chip = kzalloc(sizeof(*chip), GFP_KERNEL)) == NULL) {
1113 pci_disable_device(pci);
1114 return -ENOMEM;
1115 }
1116
1117 spin_lock_init(&chip->reg_lock);
1118 chip->card = card;
1119 chip->pci = pci;
1120 chip->irq = -1;
1121
1122 if ((err = pci_request_regions(pci, card->driver)) < 0) {
1123 kfree(chip);
1124 pci_disable_device(pci);
1125 return err;
1126 }
1127 chip->port = pci_resource_start(pci, 0);
1128 if (request_irq(pci->irq, snd_via82xx_interrupt, IRQF_SHARED,
1129 KBUILD_MODNAME, chip)) {
1130 dev_err(card->dev, "unable to grab IRQ %d\n", pci->irq);
1131 snd_via82xx_free(chip);
1132 return -EBUSY;
1133 }
1134 chip->irq = pci->irq;
1135 if (ac97_clock >= 8000 && ac97_clock <= 48000)
1136 chip->ac97_clock = ac97_clock;
1137 synchronize_irq(chip->irq);
1138
1139 if ((err = snd_via82xx_chip_init(chip)) < 0) {
1140 snd_via82xx_free(chip);
1141 return err;
1142 }
1143
1144 if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
1145 snd_via82xx_free(chip);
1146 return err;
1147 }
1148
1149
1150
1151
1152 pci_set_master(pci);
1153
1154 *r_via = chip;
1155 return 0;
1156}
1157
1158
1159static int snd_via82xx_probe(struct pci_dev *pci,
1160 const struct pci_device_id *pci_id)
1161{
1162 struct snd_card *card;
1163 struct via82xx_modem *chip;
1164 int chip_type = 0, card_type;
1165 unsigned int i;
1166 int err;
1167
1168 err = snd_card_new(&pci->dev, index, id, THIS_MODULE, 0, &card);
1169 if (err < 0)
1170 return err;
1171
1172 card_type = pci_id->driver_data;
1173 switch (card_type) {
1174 case TYPE_CARD_VIA82XX_MODEM:
1175 strcpy(card->driver, "VIA82XX-MODEM");
1176 sprintf(card->shortname, "VIA 82XX modem");
1177 break;
1178 default:
1179 dev_err(card->dev, "invalid card type %d\n", card_type);
1180 err = -EINVAL;
1181 goto __error;
1182 }
1183
1184 if ((err = snd_via82xx_create(card, pci, chip_type, pci->revision,
1185 ac97_clock, &chip)) < 0)
1186 goto __error;
1187 card->private_data = chip;
1188 if ((err = snd_via82xx_mixer_new(chip)) < 0)
1189 goto __error;
1190
1191 if ((err = snd_via686_pcm_new(chip)) < 0 )
1192 goto __error;
1193
1194
1195 for (i = 0; i < chip->num_devs; i++)
1196 snd_via82xx_channel_reset(chip, &chip->devs[i]);
1197
1198 sprintf(card->longname, "%s at 0x%lx, irq %d",
1199 card->shortname, chip->port, chip->irq);
1200
1201 snd_via82xx_proc_init(chip);
1202
1203 if ((err = snd_card_register(card)) < 0) {
1204 snd_card_free(card);
1205 return err;
1206 }
1207 pci_set_drvdata(pci, card);
1208 return 0;
1209
1210 __error:
1211 snd_card_free(card);
1212 return err;
1213}
1214
1215static void snd_via82xx_remove(struct pci_dev *pci)
1216{
1217 snd_card_free(pci_get_drvdata(pci));
1218}
1219
1220static struct pci_driver via82xx_modem_driver = {
1221 .name = KBUILD_MODNAME,
1222 .id_table = snd_via82xx_modem_ids,
1223 .probe = snd_via82xx_probe,
1224 .remove = snd_via82xx_remove,
1225 .driver = {
1226 .pm = SND_VIA82XX_PM_OPS,
1227 },
1228};
1229
1230module_pci_driver(via82xx_modem_driver);
1231
