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34#include <sound/driver.h>
35#include <asm/io.h>
36#include <linux/delay.h>
37#include <linux/interrupt.h>
38#include <linux/init.h>
39#include <linux/pci.h>
40#include <linux/slab.h>
41#include <linux/moduleparam.h>
42#include <sound/core.h>
43#include <sound/pcm.h>
44#include <sound/pcm_params.h>
45#include <sound/info.h>
46#include <sound/ac97_codec.h>
47#include <sound/initval.h>
48
49#if 0
50#define POINTER_DEBUG
51#endif
52
53MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
54MODULE_DESCRIPTION("VIA VT82xx modem");
55MODULE_LICENSE("GPL");
56MODULE_SUPPORTED_DEVICE("{{VIA,VT82C686A/B/C modem,pci}}");
57
58static int index = -2;
59static char *id = SNDRV_DEFAULT_STR1;
60static int ac97_clock = 48000;
61
62module_param(index, int, 0444);
63MODULE_PARM_DESC(index, "Index value for VIA 82xx bridge.");
64module_param(id, charp, 0444);
65MODULE_PARM_DESC(id, "ID string for VIA 82xx bridge.");
66module_param(ac97_clock, int, 0444);
67MODULE_PARM_DESC(ac97_clock, "AC'97 codec clock (default 48000Hz).");
68
69
70static int enable;
71module_param(enable, bool, 0444);
72
73
74
75
76
77
78#define VIAREG(via, x) ((via)->port + VIA_REG_##x)
79#define VIADEV_REG(viadev, x) ((viadev)->port + VIA_REG_##x)
80
81
82#define VIA_REG_OFFSET_STATUS 0x00
83#define VIA_REG_STAT_ACTIVE 0x80
84#define VIA_REG_STAT_PAUSED 0x40
85#define VIA_REG_STAT_TRIGGER_QUEUED 0x08
86#define VIA_REG_STAT_STOPPED 0x04
87#define VIA_REG_STAT_EOL 0x02
88#define VIA_REG_STAT_FLAG 0x01
89#define VIA_REG_OFFSET_CONTROL 0x01
90#define VIA_REG_CTRL_START 0x80
91#define VIA_REG_CTRL_TERMINATE 0x40
92#define VIA_REG_CTRL_AUTOSTART 0x20
93#define VIA_REG_CTRL_PAUSE 0x08
94#define VIA_REG_CTRL_INT_STOP 0x04
95#define VIA_REG_CTRL_INT_EOL 0x02
96#define VIA_REG_CTRL_INT_FLAG 0x01
97#define VIA_REG_CTRL_RESET 0x01
98#define VIA_REG_CTRL_INT (VIA_REG_CTRL_INT_FLAG | VIA_REG_CTRL_INT_EOL | VIA_REG_CTRL_AUTOSTART)
99#define VIA_REG_OFFSET_TYPE 0x02
100#define VIA_REG_TYPE_AUTOSTART 0x80
101#define VIA_REG_TYPE_16BIT 0x20
102#define VIA_REG_TYPE_STEREO 0x10
103#define VIA_REG_TYPE_INT_LLINE 0x00
104#define VIA_REG_TYPE_INT_LSAMPLE 0x04
105#define VIA_REG_TYPE_INT_LESSONE 0x08
106#define VIA_REG_TYPE_INT_MASK 0x0c
107#define VIA_REG_TYPE_INT_EOL 0x02
108#define VIA_REG_TYPE_INT_FLAG 0x01
109#define VIA_REG_OFFSET_TABLE_PTR 0x04
110#define VIA_REG_OFFSET_CURR_PTR 0x04
111#define VIA_REG_OFFSET_STOP_IDX 0x08
112#define VIA_REG_OFFSET_CURR_COUNT 0x0c
113#define VIA_REG_OFFSET_CURR_INDEX 0x0f
114
115#define DEFINE_VIA_REGSET(name,val) \
116enum {\
117 VIA_REG_##name##_STATUS = (val),\
118 VIA_REG_##name##_CONTROL = (val) + 0x01,\
119 VIA_REG_##name##_TYPE = (val) + 0x02,\
120 VIA_REG_##name##_TABLE_PTR = (val) + 0x04,\
121 VIA_REG_##name##_CURR_PTR = (val) + 0x04,\
122 VIA_REG_##name##_STOP_IDX = (val) + 0x08,\
123 VIA_REG_##name##_CURR_COUNT = (val) + 0x0c,\
124}
125
126
127DEFINE_VIA_REGSET(MO, 0x40);
128DEFINE_VIA_REGSET(MI, 0x50);
129
130
131#define VIA_REG_AC97 0x80
132#define VIA_REG_AC97_CODEC_ID_MASK (3<<30)
133#define VIA_REG_AC97_CODEC_ID_SHIFT 30
134#define VIA_REG_AC97_CODEC_ID_PRIMARY 0x00
135#define VIA_REG_AC97_CODEC_ID_SECONDARY 0x01
136#define VIA_REG_AC97_SECONDARY_VALID (1<<27)
137#define VIA_REG_AC97_PRIMARY_VALID (1<<25)
138#define VIA_REG_AC97_BUSY (1<<24)
139#define VIA_REG_AC97_READ (1<<23)
140#define VIA_REG_AC97_CMD_SHIFT 16
141#define VIA_REG_AC97_CMD_MASK 0x7e
142#define VIA_REG_AC97_DATA_SHIFT 0
143#define VIA_REG_AC97_DATA_MASK 0xffff
144
145#define VIA_REG_SGD_SHADOW 0x84
146#define VIA_REG_SGD_STAT_PB_FLAG (1<<0)
147#define VIA_REG_SGD_STAT_CP_FLAG (1<<1)
148#define VIA_REG_SGD_STAT_FM_FLAG (1<<2)
149#define VIA_REG_SGD_STAT_PB_EOL (1<<4)
150#define VIA_REG_SGD_STAT_CP_EOL (1<<5)
151#define VIA_REG_SGD_STAT_FM_EOL (1<<6)
152#define VIA_REG_SGD_STAT_PB_STOP (1<<8)
153#define VIA_REG_SGD_STAT_CP_STOP (1<<9)
154#define VIA_REG_SGD_STAT_FM_STOP (1<<10)
155#define VIA_REG_SGD_STAT_PB_ACTIVE (1<<12)
156#define VIA_REG_SGD_STAT_CP_ACTIVE (1<<13)
157#define VIA_REG_SGD_STAT_FM_ACTIVE (1<<14)
158#define VIA_REG_SGD_STAT_MR_FLAG (1<<16)
159#define VIA_REG_SGD_STAT_MW_FLAG (1<<17)
160#define VIA_REG_SGD_STAT_MR_EOL (1<<20)
161#define VIA_REG_SGD_STAT_MW_EOL (1<<21)
162#define VIA_REG_SGD_STAT_MR_STOP (1<<24)
163#define VIA_REG_SGD_STAT_MW_STOP (1<<25)
164#define VIA_REG_SGD_STAT_MR_ACTIVE (1<<28)
165#define VIA_REG_SGD_STAT_MW_ACTIVE (1<<29)
166
167#define VIA_REG_GPI_STATUS 0x88
168#define VIA_REG_GPI_INTR 0x8c
169
170#define VIA_TBL_BIT_FLAG 0x40000000
171#define VIA_TBL_BIT_EOL 0x80000000
172
173
174#define VIA_ACLINK_STAT 0x40
175#define VIA_ACLINK_C11_READY 0x20
176#define VIA_ACLINK_C10_READY 0x10
177#define VIA_ACLINK_C01_READY 0x04
178#define VIA_ACLINK_LOWPOWER 0x02
179#define VIA_ACLINK_C00_READY 0x01
180#define VIA_ACLINK_CTRL 0x41
181#define VIA_ACLINK_CTRL_ENABLE 0x80
182#define VIA_ACLINK_CTRL_RESET 0x40
183#define VIA_ACLINK_CTRL_SYNC 0x20
184#define VIA_ACLINK_CTRL_SDO 0x10
185#define VIA_ACLINK_CTRL_VRA 0x08
186#define VIA_ACLINK_CTRL_PCM 0x04
187#define VIA_ACLINK_CTRL_FM 0x02
188#define VIA_ACLINK_CTRL_SB 0x01
189#define VIA_ACLINK_CTRL_INIT (VIA_ACLINK_CTRL_ENABLE|\
190 VIA_ACLINK_CTRL_RESET|\
191 VIA_ACLINK_CTRL_PCM)
192#define VIA_FUNC_ENABLE 0x42
193#define VIA_FUNC_MIDI_PNP 0x80
194#define VIA_FUNC_MIDI_IRQMASK 0x40
195#define VIA_FUNC_RX2C_WRITE 0x20
196#define VIA_FUNC_SB_FIFO_EMPTY 0x10
197#define VIA_FUNC_ENABLE_GAME 0x08
198#define VIA_FUNC_ENABLE_FM 0x04
199#define VIA_FUNC_ENABLE_MIDI 0x02
200#define VIA_FUNC_ENABLE_SB 0x01
201#define VIA_PNP_CONTROL 0x43
202#define VIA_MC97_CTRL 0x44
203#define VIA_MC97_CTRL_ENABLE 0x80
204#define VIA_MC97_CTRL_SECONDARY 0x40
205#define VIA_MC97_CTRL_INIT (VIA_MC97_CTRL_ENABLE|\
206 VIA_MC97_CTRL_SECONDARY)
207
208
209
210
211
212
213struct snd_via_sg_table {
214 unsigned int offset;
215 unsigned int size;
216} ;
217
218#define VIA_TABLE_SIZE 255
219
220struct viadev {
221 unsigned int reg_offset;
222 unsigned long port;
223 int direction;
224 struct snd_pcm_substream *substream;
225 int running;
226 unsigned int tbl_entries;
227 struct snd_dma_buffer table;
228 struct snd_via_sg_table *idx_table;
229
230 unsigned int lastpos;
231 unsigned int bufsize;
232 unsigned int bufsize2;
233};
234
235enum { TYPE_CARD_VIA82XX_MODEM = 1 };
236
237#define VIA_MAX_MODEM_DEVS 2
238
239struct via82xx_modem {
240 int irq;
241
242 unsigned long port;
243
244 unsigned int intr_mask;
245
246 struct pci_dev *pci;
247 struct snd_card *card;
248
249 unsigned int num_devs;
250 unsigned int playback_devno, capture_devno;
251 struct viadev devs[VIA_MAX_MODEM_DEVS];
252
253 struct snd_pcm *pcms[2];
254
255 struct snd_ac97_bus *ac97_bus;
256 struct snd_ac97 *ac97;
257 unsigned int ac97_clock;
258 unsigned int ac97_secondary;
259
260 spinlock_t reg_lock;
261 struct snd_info_entry *proc_entry;
262};
263
264static struct pci_device_id snd_via82xx_modem_ids[] = {
265 { 0x1106, 0x3068, PCI_ANY_ID, PCI_ANY_ID, 0, 0, TYPE_CARD_VIA82XX_MODEM, },
266 { 0, }
267};
268
269MODULE_DEVICE_TABLE(pci, snd_via82xx_modem_ids);
270
271
272
273
274
275
276
277
278
279static int build_via_table(struct viadev *dev, struct snd_pcm_substream *substream,
280 struct pci_dev *pci,
281 unsigned int periods, unsigned int fragsize)
282{
283 unsigned int i, idx, ofs, rest;
284 struct via82xx_modem *chip = snd_pcm_substream_chip(substream);
285 struct snd_sg_buf *sgbuf = snd_pcm_substream_sgbuf(substream);
286
287 if (dev->table.area == NULL) {
288
289
290
291 if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(chip->pci),
292 PAGE_ALIGN(VIA_TABLE_SIZE * 2 * 8),
293 &dev->table) < 0)
294 return -ENOMEM;
295 }
296 if (! dev->idx_table) {
297 dev->idx_table = kmalloc(sizeof(*dev->idx_table) * VIA_TABLE_SIZE, 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
315 if (idx >= VIA_TABLE_SIZE) {
316 snd_printk(KERN_ERR "via82xx: too much table size!\n");
317 return -EINVAL;
318 }
319 ((u32 *)dev->table.area)[idx << 1] = cpu_to_le32((u32)snd_pcm_sgbuf_get_addr(sgbuf, ofs));
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 ((u32 *)dev->table.area)[(idx<<1) + 1] = cpu_to_le32(r | flag);
333 dev->idx_table[idx].offset = ofs;
334 dev->idx_table[idx].size = r;
335 ofs += r;
336 idx++;
337 } while (rest > 0);
338 }
339 dev->tbl_entries = idx;
340 dev->bufsize = periods * fragsize;
341 dev->bufsize2 = dev->bufsize / 2;
342 return 0;
343}
344
345
346static int clean_via_table(struct viadev *dev, struct snd_pcm_substream *substream,
347 struct pci_dev *pci)
348{
349 if (dev->table.area) {
350 snd_dma_free_pages(&dev->table);
351 dev->table.area = NULL;
352 }
353 kfree(dev->idx_table);
354 dev->idx_table = NULL;
355 return 0;
356}
357
358
359
360
361
362static inline unsigned int snd_via82xx_codec_xread(struct via82xx_modem *chip)
363{
364 return inl(VIAREG(chip, AC97));
365}
366
367static inline void snd_via82xx_codec_xwrite(struct via82xx_modem *chip, unsigned int val)
368{
369 outl(val, VIAREG(chip, AC97));
370}
371
372static int snd_via82xx_codec_ready(struct via82xx_modem *chip, int secondary)
373{
374 unsigned int timeout = 1000;
375 unsigned int val;
376
377 while (timeout-- > 0) {
378 udelay(1);
379 if (!((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY))
380 return val & 0xffff;
381 }
382 snd_printk(KERN_ERR "codec_ready: codec %i is not ready [0x%x]\n",
383 secondary, snd_via82xx_codec_xread(chip));
384 return -EIO;
385}
386
387static int snd_via82xx_codec_valid(struct via82xx_modem *chip, int secondary)
388{
389 unsigned int timeout = 1000;
390 unsigned int val, val1;
391 unsigned int stat = !secondary ? VIA_REG_AC97_PRIMARY_VALID :
392 VIA_REG_AC97_SECONDARY_VALID;
393
394 while (timeout-- > 0) {
395 val = snd_via82xx_codec_xread(chip);
396 val1 = val & (VIA_REG_AC97_BUSY | stat);
397 if (val1 == stat)
398 return val & 0xffff;
399 udelay(1);
400 }
401 return -EIO;
402}
403
404static void snd_via82xx_codec_wait(struct snd_ac97 *ac97)
405{
406 struct via82xx_modem *chip = ac97->private_data;
407 int err;
408 err = snd_via82xx_codec_ready(chip, ac97->num);
409
410 msleep(500);
411}
412
413static void snd_via82xx_codec_write(struct snd_ac97 *ac97,
414 unsigned short reg,
415 unsigned short val)
416{
417 struct via82xx_modem *chip = ac97->private_data;
418 unsigned int xval;
419 if(reg == AC97_GPIO_STATUS) {
420 outl(val, VIAREG(chip, GPI_STATUS));
421 return;
422 }
423 xval = !ac97->num ? VIA_REG_AC97_CODEC_ID_PRIMARY : VIA_REG_AC97_CODEC_ID_SECONDARY;
424 xval <<= VIA_REG_AC97_CODEC_ID_SHIFT;
425 xval |= reg << VIA_REG_AC97_CMD_SHIFT;
426 xval |= val << VIA_REG_AC97_DATA_SHIFT;
427 snd_via82xx_codec_xwrite(chip, xval);
428 snd_via82xx_codec_ready(chip, ac97->num);
429}
430
431static unsigned short snd_via82xx_codec_read(struct snd_ac97 *ac97, unsigned short reg)
432{
433 struct via82xx_modem *chip = ac97->private_data;
434 unsigned int xval, val = 0xffff;
435 int again = 0;
436
437 xval = ac97->num << VIA_REG_AC97_CODEC_ID_SHIFT;
438 xval |= ac97->num ? VIA_REG_AC97_SECONDARY_VALID : VIA_REG_AC97_PRIMARY_VALID;
439 xval |= VIA_REG_AC97_READ;
440 xval |= (reg & 0x7f) << VIA_REG_AC97_CMD_SHIFT;
441 while (1) {
442 if (again++ > 3) {
443 snd_printk(KERN_ERR "codec_read: codec %i is not valid [0x%x]\n",
444 ac97->num, snd_via82xx_codec_xread(chip));
445 return 0xffff;
446 }
447 snd_via82xx_codec_xwrite(chip, xval);
448 udelay (20);
449 if (snd_via82xx_codec_valid(chip, ac97->num) >= 0) {
450 udelay(25);
451 val = snd_via82xx_codec_xread(chip);
452 break;
453 }
454 }
455 return val & 0xffff;
456}
457
458static void snd_via82xx_channel_reset(struct via82xx_modem *chip, struct viadev *viadev)
459{
460 outb(VIA_REG_CTRL_PAUSE | VIA_REG_CTRL_TERMINATE | VIA_REG_CTRL_RESET,
461 VIADEV_REG(viadev, OFFSET_CONTROL));
462 inb(VIADEV_REG(viadev, OFFSET_CONTROL));
463 udelay(50);
464
465 outb(0x00, VIADEV_REG(viadev, OFFSET_CONTROL));
466
467 outb(0x03, VIADEV_REG(viadev, OFFSET_STATUS));
468 outb(0x00, VIADEV_REG(viadev, OFFSET_TYPE));
469
470 viadev->lastpos = 0;
471}
472
473
474
475
476
477
478static irqreturn_t snd_via82xx_interrupt(int irq, void *dev_id)
479{
480 struct via82xx_modem *chip = dev_id;
481 unsigned int status;
482 unsigned int i;
483
484 status = inl(VIAREG(chip, SGD_SHADOW));
485 if (! (status & chip->intr_mask)) {
486 return IRQ_NONE;
487 }
488
489
490
491 spin_lock(&chip->reg_lock);
492 for (i = 0; i < chip->num_devs; i++) {
493 struct viadev *viadev = &chip->devs[i];
494 unsigned char c_status = inb(VIADEV_REG(viadev, OFFSET_STATUS));
495 c_status &= (VIA_REG_STAT_EOL|VIA_REG_STAT_FLAG|VIA_REG_STAT_STOPPED);
496 if (! c_status)
497 continue;
498 if (viadev->substream && viadev->running) {
499 spin_unlock(&chip->reg_lock);
500 snd_pcm_period_elapsed(viadev->substream);
501 spin_lock(&chip->reg_lock);
502 }
503 outb(c_status, VIADEV_REG(viadev, OFFSET_STATUS));
504 }
505 spin_unlock(&chip->reg_lock);
506 return IRQ_HANDLED;
507}
508
509
510
511
512
513
514
515
516static int snd_via82xx_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
517{
518 struct via82xx_modem *chip = snd_pcm_substream_chip(substream);
519 struct viadev *viadev = substream->runtime->private_data;
520 unsigned char val = 0;
521
522 switch (cmd) {
523 case SNDRV_PCM_TRIGGER_START:
524 case SNDRV_PCM_TRIGGER_SUSPEND:
525 val |= VIA_REG_CTRL_START;
526 viadev->running = 1;
527 break;
528 case SNDRV_PCM_TRIGGER_STOP:
529 val = VIA_REG_CTRL_TERMINATE;
530 viadev->running = 0;
531 break;
532 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
533 val |= VIA_REG_CTRL_PAUSE;
534 viadev->running = 0;
535 break;
536 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
537 viadev->running = 1;
538 break;
539 default:
540 return -EINVAL;
541 }
542 outb(val, VIADEV_REG(viadev, OFFSET_CONTROL));
543 if (cmd == SNDRV_PCM_TRIGGER_STOP)
544 snd_via82xx_channel_reset(chip, viadev);
545 return 0;
546}
547
548
549
550
551
552
553
554
555
556#define check_invalid_pos(viadev,pos) \
557 ((pos) < viadev->lastpos && ((pos) >= viadev->bufsize2 ||\
558 viadev->lastpos < viadev->bufsize2))
559
560static inline unsigned int calc_linear_pos(struct viadev *viadev, unsigned int idx,
561 unsigned int count)
562{
563 unsigned int size, res;
564
565 size = viadev->idx_table[idx].size;
566 res = viadev->idx_table[idx].offset + size - count;
567
568
569 if (size < count) {
570 snd_printd(KERN_ERR "invalid via82xx_cur_ptr (size = %d, count = %d)\n",
571 (int)size, (int)count);
572 res = viadev->lastpos;
573 } else if (check_invalid_pos(viadev, res)) {
574#ifdef POINTER_DEBUG
575 printk(KERN_DEBUG "fail: idx = %i/%i, lastpos = 0x%x, "
576 "bufsize2 = 0x%x, offsize = 0x%x, size = 0x%x, "
577 "count = 0x%x\n", idx, viadev->tbl_entries, viadev->lastpos,
578 viadev->bufsize2, viadev->idx_table[idx].offset,
579 viadev->idx_table[idx].size, count);
580#endif
581 if (count && size < count) {
582 snd_printd(KERN_ERR "invalid via82xx_cur_ptr, "
583 "using last valid pointer\n");
584 res = viadev->lastpos;
585 } else {
586 if (! count)
587
588 res = viadev->idx_table[idx].offset;
589 else
590
591
592
593 res = viadev->idx_table[idx].offset + size;
594 if (check_invalid_pos(viadev, res)) {
595 snd_printd(KERN_ERR "invalid via82xx_cur_ptr (2), "
596 "using last valid pointer\n");
597 res = viadev->lastpos;
598 }
599 }
600 }
601 viadev->lastpos = res;
602 if (res >= viadev->bufsize)
603 res -= viadev->bufsize;
604 return res;
605}
606
607
608
609
610static snd_pcm_uframes_t snd_via686_pcm_pointer(struct snd_pcm_substream *substream)
611{
612 struct via82xx_modem *chip = snd_pcm_substream_chip(substream);
613 struct viadev *viadev = substream->runtime->private_data;
614 unsigned int idx, ptr, count, res;
615
616 snd_assert(viadev->tbl_entries, return 0);
617 if (!(inb(VIADEV_REG(viadev, OFFSET_STATUS)) & VIA_REG_STAT_ACTIVE))
618 return 0;
619
620 spin_lock(&chip->reg_lock);
621 count = inl(VIADEV_REG(viadev, OFFSET_CURR_COUNT)) & 0xffffff;
622
623
624
625 ptr = inl(VIADEV_REG(viadev, OFFSET_CURR_PTR));
626 if (ptr <= (unsigned int)viadev->table.addr)
627 idx = 0;
628 else
629 idx = ((ptr - (unsigned int)viadev->table.addr) / 8 - 1) %
630 viadev->tbl_entries;
631 res = calc_linear_pos(viadev, idx, count);
632 spin_unlock(&chip->reg_lock);
633
634 return bytes_to_frames(substream->runtime, res);
635}
636
637
638
639
640
641static int snd_via82xx_hw_params(struct snd_pcm_substream *substream,
642 struct snd_pcm_hw_params *hw_params)
643{
644 struct via82xx_modem *chip = snd_pcm_substream_chip(substream);
645 struct viadev *viadev = substream->runtime->private_data;
646 int err;
647
648 err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
649 if (err < 0)
650 return err;
651 err = build_via_table(viadev, substream, chip->pci,
652 params_periods(hw_params),
653 params_period_bytes(hw_params));
654 if (err < 0)
655 return err;
656
657 snd_ac97_write(chip->ac97, AC97_LINE1_RATE, params_rate(hw_params));
658 snd_ac97_write(chip->ac97, AC97_LINE1_LEVEL, 0);
659
660 return 0;
661}
662
663
664
665
666
667static int snd_via82xx_hw_free(struct snd_pcm_substream *substream)
668{
669 struct via82xx_modem *chip = snd_pcm_substream_chip(substream);
670 struct viadev *viadev = substream->runtime->private_data;
671
672 clean_via_table(viadev, substream, chip->pci);
673 snd_pcm_lib_free_pages(substream);
674 return 0;
675}
676
677
678
679
680
681static void snd_via82xx_set_table_ptr(struct via82xx_modem *chip, struct viadev *viadev)
682{
683 snd_via82xx_codec_ready(chip, chip->ac97_secondary);
684 outl((u32)viadev->table.addr, VIADEV_REG(viadev, OFFSET_TABLE_PTR));
685 udelay(20);
686 snd_via82xx_codec_ready(chip, chip->ac97_secondary);
687}
688
689
690
691
692static int snd_via82xx_pcm_prepare(struct snd_pcm_substream *substream)
693{
694 struct via82xx_modem *chip = snd_pcm_substream_chip(substream);
695 struct viadev *viadev = substream->runtime->private_data;
696
697 snd_via82xx_channel_reset(chip, viadev);
698
699 snd_via82xx_set_table_ptr(chip, viadev);
700 outb(VIA_REG_TYPE_AUTOSTART|VIA_REG_TYPE_INT_EOL|VIA_REG_TYPE_INT_FLAG,
701 VIADEV_REG(viadev, OFFSET_TYPE));
702 return 0;
703}
704
705
706
707
708static struct snd_pcm_hardware snd_via82xx_hw =
709{
710 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
711 SNDRV_PCM_INFO_BLOCK_TRANSFER |
712 SNDRV_PCM_INFO_MMAP_VALID |
713
714 SNDRV_PCM_INFO_PAUSE),
715 .formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE,
716 .rates = SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_KNOT,
717 .rate_min = 8000,
718 .rate_max = 16000,
719 .channels_min = 1,
720 .channels_max = 1,
721 .buffer_bytes_max = 128 * 1024,
722 .period_bytes_min = 32,
723 .period_bytes_max = 128 * 1024,
724 .periods_min = 2,
725 .periods_max = VIA_TABLE_SIZE / 2,
726 .fifo_size = 0,
727};
728
729
730
731
732
733static int snd_via82xx_modem_pcm_open(struct via82xx_modem *chip, struct viadev *viadev,
734 struct snd_pcm_substream *substream)
735{
736 struct snd_pcm_runtime *runtime = substream->runtime;
737 int err;
738 static unsigned int rates[] = { 8000, 9600, 12000, 16000 };
739 static struct snd_pcm_hw_constraint_list hw_constraints_rates = {
740 .count = ARRAY_SIZE(rates),
741 .list = rates,
742 .mask = 0,
743 };
744
745 runtime->hw = snd_via82xx_hw;
746
747 if ((err = snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
748 &hw_constraints_rates)) < 0)
749 return err;
750
751
752
753 if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
754 return err;
755
756 runtime->private_data = viadev;
757 viadev->substream = substream;
758
759 return 0;
760}
761
762
763
764
765
766static int snd_via82xx_playback_open(struct snd_pcm_substream *substream)
767{
768 struct via82xx_modem *chip = snd_pcm_substream_chip(substream);
769 struct viadev *viadev = &chip->devs[chip->playback_devno + substream->number];
770
771 return snd_via82xx_modem_pcm_open(chip, viadev, substream);
772}
773
774
775
776
777static int snd_via82xx_capture_open(struct snd_pcm_substream *substream)
778{
779 struct via82xx_modem *chip = snd_pcm_substream_chip(substream);
780 struct viadev *viadev = &chip->devs[chip->capture_devno + substream->pcm->device];
781
782 return snd_via82xx_modem_pcm_open(chip, viadev, substream);
783}
784
785
786
787
788static int snd_via82xx_pcm_close(struct snd_pcm_substream *substream)
789{
790 struct viadev *viadev = substream->runtime->private_data;
791
792 viadev->substream = NULL;
793 return 0;
794}
795
796
797
798static struct snd_pcm_ops snd_via686_playback_ops = {
799 .open = snd_via82xx_playback_open,
800 .close = snd_via82xx_pcm_close,
801 .ioctl = snd_pcm_lib_ioctl,
802 .hw_params = snd_via82xx_hw_params,
803 .hw_free = snd_via82xx_hw_free,
804 .prepare = snd_via82xx_pcm_prepare,
805 .trigger = snd_via82xx_pcm_trigger,
806 .pointer = snd_via686_pcm_pointer,
807 .page = snd_pcm_sgbuf_ops_page,
808};
809
810
811static struct snd_pcm_ops snd_via686_capture_ops = {
812 .open = snd_via82xx_capture_open,
813 .close = snd_via82xx_pcm_close,
814 .ioctl = snd_pcm_lib_ioctl,
815 .hw_params = snd_via82xx_hw_params,
816 .hw_free = snd_via82xx_hw_free,
817 .prepare = snd_via82xx_pcm_prepare,
818 .trigger = snd_via82xx_pcm_trigger,
819 .pointer = snd_via686_pcm_pointer,
820 .page = snd_pcm_sgbuf_ops_page,
821};
822
823
824static void init_viadev(struct via82xx_modem *chip, int idx, unsigned int reg_offset,
825 int direction)
826{
827 chip->devs[idx].reg_offset = reg_offset;
828 chip->devs[idx].direction = direction;
829 chip->devs[idx].port = chip->port + reg_offset;
830}
831
832
833
834
835static int __devinit snd_via686_pcm_new(struct via82xx_modem *chip)
836{
837 struct snd_pcm *pcm;
838 int err;
839
840 chip->playback_devno = 0;
841 chip->capture_devno = 1;
842 chip->num_devs = 2;
843 chip->intr_mask = 0x330000;
844
845 err = snd_pcm_new(chip->card, chip->card->shortname, 0, 1, 1, &pcm);
846 if (err < 0)
847 return err;
848 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via686_playback_ops);
849 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via686_capture_ops);
850 pcm->dev_class = SNDRV_PCM_CLASS_MODEM;
851 pcm->private_data = chip;
852 strcpy(pcm->name, chip->card->shortname);
853 chip->pcms[0] = pcm;
854 init_viadev(chip, 0, VIA_REG_MO_STATUS, 0);
855 init_viadev(chip, 1, VIA_REG_MI_STATUS, 1);
856
857 if ((err = snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
858 snd_dma_pci_data(chip->pci),
859 64*1024, 128*1024)) < 0)
860 return err;
861
862 return 0;
863}
864
865
866
867
868
869
870
871static void snd_via82xx_mixer_free_ac97_bus(struct snd_ac97_bus *bus)
872{
873 struct via82xx_modem *chip = bus->private_data;
874 chip->ac97_bus = NULL;
875}
876
877static void snd_via82xx_mixer_free_ac97(struct snd_ac97 *ac97)
878{
879 struct via82xx_modem *chip = ac97->private_data;
880 chip->ac97 = NULL;
881}
882
883
884static int __devinit snd_via82xx_mixer_new(struct via82xx_modem *chip)
885{
886 struct snd_ac97_template ac97;
887 int err;
888 static struct snd_ac97_bus_ops ops = {
889 .write = snd_via82xx_codec_write,
890 .read = snd_via82xx_codec_read,
891 .wait = snd_via82xx_codec_wait,
892 };
893
894 if ((err = snd_ac97_bus(chip->card, 0, &ops, chip, &chip->ac97_bus)) < 0)
895 return err;
896 chip->ac97_bus->private_free = snd_via82xx_mixer_free_ac97_bus;
897 chip->ac97_bus->clock = chip->ac97_clock;
898
899 memset(&ac97, 0, sizeof(ac97));
900 ac97.private_data = chip;
901 ac97.private_free = snd_via82xx_mixer_free_ac97;
902 ac97.pci = chip->pci;
903 ac97.scaps = AC97_SCAP_SKIP_AUDIO | AC97_SCAP_POWER_SAVE;
904 ac97.num = chip->ac97_secondary;
905
906 if ((err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97)) < 0)
907 return err;
908
909 return 0;
910}
911
912
913
914
915
916static void snd_via82xx_proc_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer)
917{
918 struct via82xx_modem *chip = entry->private_data;
919 int i;
920
921 snd_iprintf(buffer, "%s\n\n", chip->card->longname);
922 for (i = 0; i < 0xa0; i += 4) {
923 snd_iprintf(buffer, "%02x: %08x\n", i, inl(chip->port + i));
924 }
925}
926
927static void __devinit snd_via82xx_proc_init(struct via82xx_modem *chip)
928{
929 struct snd_info_entry *entry;
930
931 if (! snd_card_proc_new(chip->card, "via82xx", &entry))
932 snd_info_set_text_ops(entry, chip, snd_via82xx_proc_read);
933}
934
935
936
937
938
939static int snd_via82xx_chip_init(struct via82xx_modem *chip)
940{
941 unsigned int val;
942 unsigned long end_time;
943 unsigned char pval;
944
945 pci_read_config_byte(chip->pci, VIA_MC97_CTRL, &pval);
946 if((pval & VIA_MC97_CTRL_INIT) != VIA_MC97_CTRL_INIT) {
947 pci_write_config_byte(chip->pci, 0x44, pval|VIA_MC97_CTRL_INIT);
948 udelay(100);
949 }
950
951 pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval);
952 if (! (pval & VIA_ACLINK_C00_READY)) {
953
954 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL,
955 VIA_ACLINK_CTRL_ENABLE |
956 VIA_ACLINK_CTRL_RESET |
957 VIA_ACLINK_CTRL_SYNC);
958 udelay(100);
959#if 1
960 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, 0x00);
961 udelay(100);
962#else
963
964 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL,
965 VIA_ACLINK_CTRL_RESET|VIA_ACLINK_CTRL_SYNC);
966 udelay(2);
967#endif
968
969 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT);
970 udelay(100);
971 }
972
973 pci_read_config_byte(chip->pci, VIA_ACLINK_CTRL, &pval);
974 if ((pval & VIA_ACLINK_CTRL_INIT) != VIA_ACLINK_CTRL_INIT) {
975
976 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT);
977 udelay(100);
978 }
979
980
981 end_time = jiffies + msecs_to_jiffies(750);
982 do {
983 pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval);
984 if (pval & VIA_ACLINK_C00_READY)
985 break;
986 schedule_timeout_uninterruptible(1);
987 } while (time_before(jiffies, end_time));
988
989 if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY)
990 snd_printk(KERN_ERR "AC'97 codec is not ready [0x%x]\n", val);
991
992 snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ |
993 VIA_REG_AC97_SECONDARY_VALID |
994 (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT));
995 end_time = jiffies + msecs_to_jiffies(750);
996 snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ |
997 VIA_REG_AC97_SECONDARY_VALID |
998 (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT));
999 do {
1000 if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_SECONDARY_VALID) {
1001 chip->ac97_secondary = 1;
1002 goto __ac97_ok2;
1003 }
1004 schedule_timeout_uninterruptible(1);
1005 } while (time_before(jiffies, end_time));
1006
1007
1008 __ac97_ok2:
1009
1010
1011
1012
1013 outl(0, VIAREG(chip, GPI_INTR));
1014
1015 return 0;
1016}
1017
1018#ifdef CONFIG_PM
1019
1020
1021
1022static int snd_via82xx_suspend(struct pci_dev *pci, pm_message_t state)
1023{
1024 struct snd_card *card = pci_get_drvdata(pci);
1025 struct via82xx_modem *chip = card->private_data;
1026 int i;
1027
1028 snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
1029 for (i = 0; i < 2; i++)
1030 snd_pcm_suspend_all(chip->pcms[i]);
1031 for (i = 0; i < chip->num_devs; i++)
1032 snd_via82xx_channel_reset(chip, &chip->devs[i]);
1033 synchronize_irq(chip->irq);
1034 snd_ac97_suspend(chip->ac97);
1035
1036 pci_disable_device(pci);
1037 pci_save_state(pci);
1038 pci_set_power_state(pci, pci_choose_state(pci, state));
1039 return 0;
1040}
1041
1042static int snd_via82xx_resume(struct pci_dev *pci)
1043{
1044 struct snd_card *card = pci_get_drvdata(pci);
1045 struct via82xx_modem *chip = card->private_data;
1046 int i;
1047
1048 pci_set_power_state(pci, PCI_D0);
1049 pci_restore_state(pci);
1050 if (pci_enable_device(pci) < 0) {
1051 printk(KERN_ERR "via82xx-modem: pci_enable_device failed, "
1052 "disabling device\n");
1053 snd_card_disconnect(card);
1054 return -EIO;
1055 }
1056 pci_set_master(pci);
1057
1058 snd_via82xx_chip_init(chip);
1059
1060 snd_ac97_resume(chip->ac97);
1061
1062 for (i = 0; i < chip->num_devs; i++)
1063 snd_via82xx_channel_reset(chip, &chip->devs[i]);
1064
1065 snd_power_change_state(card, SNDRV_CTL_POWER_D0);
1066 return 0;
1067}
1068#endif
1069
1070static int snd_via82xx_free(struct via82xx_modem *chip)
1071{
1072 unsigned int i;
1073
1074 if (chip->irq < 0)
1075 goto __end_hw;
1076
1077 for (i = 0; i < chip->num_devs; i++)
1078 snd_via82xx_channel_reset(chip, &chip->devs[i]);
1079 synchronize_irq(chip->irq);
1080 __end_hw:
1081 if (chip->irq >= 0)
1082 free_irq(chip->irq, chip);
1083 pci_release_regions(chip->pci);
1084 pci_disable_device(chip->pci);
1085 kfree(chip);
1086 return 0;
1087}
1088
1089static int snd_via82xx_dev_free(struct snd_device *device)
1090{
1091 struct via82xx_modem *chip = device->device_data;
1092 return snd_via82xx_free(chip);
1093}
1094
1095static int __devinit snd_via82xx_create(struct snd_card *card,
1096 struct pci_dev *pci,
1097 int chip_type,
1098 int revision,
1099 unsigned int ac97_clock,
1100 struct via82xx_modem ** r_via)
1101{
1102 struct via82xx_modem *chip;
1103 int err;
1104 static struct snd_device_ops ops = {
1105 .dev_free = snd_via82xx_dev_free,
1106 };
1107
1108 if ((err = pci_enable_device(pci)) < 0)
1109 return err;
1110
1111 if ((chip = kzalloc(sizeof(*chip), GFP_KERNEL)) == NULL) {
1112 pci_disable_device(pci);
1113 return -ENOMEM;
1114 }
1115
1116 spin_lock_init(&chip->reg_lock);
1117 chip->card = card;
1118 chip->pci = pci;
1119 chip->irq = -1;
1120
1121 if ((err = pci_request_regions(pci, card->driver)) < 0) {
1122 kfree(chip);
1123 pci_disable_device(pci);
1124 return err;
1125 }
1126 chip->port = pci_resource_start(pci, 0);
1127 if (request_irq(pci->irq, snd_via82xx_interrupt, IRQF_SHARED,
1128 card->driver, chip)) {
1129 snd_printk(KERN_ERR "unable to grab IRQ %d\n", pci->irq);
1130 snd_via82xx_free(chip);
1131 return -EBUSY;
1132 }
1133 chip->irq = pci->irq;
1134 if (ac97_clock >= 8000 && ac97_clock <= 48000)
1135 chip->ac97_clock = ac97_clock;
1136 synchronize_irq(chip->irq);
1137
1138 if ((err = snd_via82xx_chip_init(chip)) < 0) {
1139 snd_via82xx_free(chip);
1140 return err;
1141 }
1142
1143 if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
1144 snd_via82xx_free(chip);
1145 return err;
1146 }
1147
1148
1149
1150
1151 pci_set_master(pci);
1152
1153 snd_card_set_dev(card, &pci->dev);
1154
1155 *r_via = chip;
1156 return 0;
1157}
1158
1159
1160static int __devinit snd_via82xx_probe(struct pci_dev *pci,
1161 const struct pci_device_id *pci_id)
1162{
1163 struct snd_card *card;
1164 struct via82xx_modem *chip;
1165 int chip_type = 0, card_type;
1166 unsigned int i;
1167 int err;
1168
1169 card = snd_card_new(index, id, THIS_MODULE, 0);
1170 if (card == NULL)
1171 return -ENOMEM;
1172
1173 card_type = pci_id->driver_data;
1174 switch (card_type) {
1175 case TYPE_CARD_VIA82XX_MODEM:
1176 strcpy(card->driver, "VIA82XX-MODEM");
1177 sprintf(card->shortname, "VIA 82XX modem");
1178 break;
1179 default:
1180 snd_printk(KERN_ERR "invalid card type %d\n", card_type);
1181 err = -EINVAL;
1182 goto __error;
1183 }
1184
1185 if ((err = snd_via82xx_create(card, pci, chip_type, pci->revision,
1186 ac97_clock, &chip)) < 0)
1187 goto __error;
1188 card->private_data = chip;
1189 if ((err = snd_via82xx_mixer_new(chip)) < 0)
1190 goto __error;
1191
1192 if ((err = snd_via686_pcm_new(chip)) < 0 )
1193 goto __error;
1194
1195
1196 for (i = 0; i < chip->num_devs; i++)
1197 snd_via82xx_channel_reset(chip, &chip->devs[i]);
1198
1199 sprintf(card->longname, "%s at 0x%lx, irq %d",
1200 card->shortname, chip->port, chip->irq);
1201
1202 snd_via82xx_proc_init(chip);
1203
1204 if ((err = snd_card_register(card)) < 0) {
1205 snd_card_free(card);
1206 return err;
1207 }
1208 pci_set_drvdata(pci, card);
1209 return 0;
1210
1211 __error:
1212 snd_card_free(card);
1213 return err;
1214}
1215
1216static void __devexit snd_via82xx_remove(struct pci_dev *pci)
1217{
1218 snd_card_free(pci_get_drvdata(pci));
1219 pci_set_drvdata(pci, NULL);
1220}
1221
1222static struct pci_driver driver = {
1223 .name = "VIA 82xx Modem",
1224 .id_table = snd_via82xx_modem_ids,
1225 .probe = snd_via82xx_probe,
1226 .remove = __devexit_p(snd_via82xx_remove),
1227#ifdef CONFIG_PM
1228 .suspend = snd_via82xx_suspend,
1229 .resume = snd_via82xx_resume,
1230#endif
1231};
1232
1233static int __init alsa_card_via82xx_init(void)
1234{
1235 return pci_register_driver(&driver);
1236}
1237
1238static void __exit alsa_card_via82xx_exit(void)
1239{
1240 pci_unregister_driver(&driver);
1241}
1242
1243module_init(alsa_card_via82xx_init)
1244module_exit(alsa_card_via82xx_exit)
1245
