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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@suse.cz>");
54MODULE_DESCRIPTION("VIA VT82xx modem");
55MODULE_LICENSE("GPL");
56MODULE_SUPPORTED_DEVICE("{{VIA,VT82C686A/B/C modem,pci}}");
57
58static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
59static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
60static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
61static int ac97_clock[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 48000};
62
63module_param_array(index, int, NULL, 0444);
64MODULE_PARM_DESC(index, "Index value for VIA 82xx bridge.");
65module_param_array(id, charp, NULL, 0444);
66MODULE_PARM_DESC(id, "ID string for VIA 82xx bridge.");
67module_param_array(enable, bool, NULL, 0444);
68MODULE_PARM_DESC(enable, "Enable modem part of VIA 82xx bridge.");
69module_param_array(ac97_clock, int, NULL, 0444);
70MODULE_PARM_DESC(ac97_clock, "AC'97 codec clock (default 48000Hz).");
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
208typedef struct _snd_via82xx_modem via82xx_t;
209typedef struct via_dev viadev_t;
210
211
212
213
214
215struct snd_via_sg_table {
216 unsigned int offset;
217 unsigned int size;
218} ;
219
220#define VIA_TABLE_SIZE 255
221
222struct via_dev {
223 unsigned int reg_offset;
224 unsigned long port;
225 int direction;
226 snd_pcm_substream_t *substream;
227 int running;
228 unsigned int tbl_entries;
229 struct snd_dma_buffer table;
230 struct snd_via_sg_table *idx_table;
231
232 unsigned int lastpos;
233 unsigned int bufsize;
234 unsigned int bufsize2;
235};
236
237enum { TYPE_CARD_VIA82XX_MODEM = 1 };
238
239#define VIA_MAX_MODEM_DEVS 2
240
241struct _snd_via82xx_modem {
242 int irq;
243
244 unsigned long port;
245
246 unsigned int intr_mask;
247
248 struct pci_dev *pci;
249 snd_card_t *card;
250
251 unsigned int num_devs;
252 unsigned int playback_devno, capture_devno;
253 viadev_t devs[VIA_MAX_MODEM_DEVS];
254
255 snd_pcm_t *pcms[2];
256
257 ac97_bus_t *ac97_bus;
258 ac97_t *ac97;
259 unsigned int ac97_clock;
260 unsigned int ac97_secondary;
261
262 spinlock_t reg_lock;
263 snd_info_entry_t *proc_entry;
264};
265
266static struct pci_device_id snd_via82xx_modem_ids[] = {
267 { 0x1106, 0x3068, PCI_ANY_ID, PCI_ANY_ID, 0, 0, TYPE_CARD_VIA82XX_MODEM, },
268 { 0, }
269};
270
271MODULE_DEVICE_TABLE(pci, snd_via82xx_modem_ids);
272
273
274
275
276
277
278
279
280
281static int build_via_table(viadev_t *dev, snd_pcm_substream_t *substream,
282 struct pci_dev *pci,
283 unsigned int periods, unsigned int fragsize)
284{
285 unsigned int i, idx, ofs, rest;
286 via82xx_t *chip = snd_pcm_substream_chip(substream);
287 struct snd_sg_buf *sgbuf = snd_pcm_substream_sgbuf(substream);
288
289 if (dev->table.area == NULL) {
290
291
292
293 if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(chip->pci),
294 PAGE_ALIGN(VIA_TABLE_SIZE * 2 * 8),
295 &dev->table) < 0)
296 return -ENOMEM;
297 }
298 if (! dev->idx_table) {
299 dev->idx_table = kmalloc(sizeof(*dev->idx_table) * VIA_TABLE_SIZE, GFP_KERNEL);
300 if (! dev->idx_table)
301 return -ENOMEM;
302 }
303
304
305 idx = 0;
306 ofs = 0;
307 for (i = 0; i < periods; i++) {
308 rest = fragsize;
309
310
311
312
313 do {
314 unsigned int r;
315 unsigned int flag;
316
317 if (idx >= VIA_TABLE_SIZE) {
318 snd_printk(KERN_ERR "via82xx: too much table size!\n");
319 return -EINVAL;
320 }
321 ((u32 *)dev->table.area)[idx << 1] = cpu_to_le32((u32)snd_pcm_sgbuf_get_addr(sgbuf, ofs));
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 ((u32 *)dev->table.area)[(idx<<1) + 1] = cpu_to_le32(r | flag);
335 dev->idx_table[idx].offset = ofs;
336 dev->idx_table[idx].size = r;
337 ofs += r;
338 idx++;
339 } while (rest > 0);
340 }
341 dev->tbl_entries = idx;
342 dev->bufsize = periods * fragsize;
343 dev->bufsize2 = dev->bufsize / 2;
344 return 0;
345}
346
347
348static int clean_via_table(viadev_t *dev, snd_pcm_substream_t *substream,
349 struct pci_dev *pci)
350{
351 if (dev->table.area) {
352 snd_dma_free_pages(&dev->table);
353 dev->table.area = NULL;
354 }
355 if (dev->idx_table) {
356 kfree(dev->idx_table);
357 dev->idx_table = NULL;
358 }
359 return 0;
360}
361
362
363
364
365
366static inline unsigned int snd_via82xx_codec_xread(via82xx_t *chip)
367{
368 return inl(VIAREG(chip, AC97));
369}
370
371static inline void snd_via82xx_codec_xwrite(via82xx_t *chip, unsigned int val)
372{
373 outl(val, VIAREG(chip, AC97));
374}
375
376static int snd_via82xx_codec_ready(via82xx_t *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 snd_printk(KERN_ERR "codec_ready: codec %i is not ready [0x%x]\n", secondary, snd_via82xx_codec_xread(chip));
387 return -EIO;
388}
389
390static int snd_via82xx_codec_valid(via82xx_t *chip, int secondary)
391{
392 unsigned int timeout = 1000;
393 unsigned int val, val1;
394 unsigned int stat = !secondary ? VIA_REG_AC97_PRIMARY_VALID :
395 VIA_REG_AC97_SECONDARY_VALID;
396
397 while (timeout-- > 0) {
398 val = snd_via82xx_codec_xread(chip);
399 val1 = val & (VIA_REG_AC97_BUSY | stat);
400 if (val1 == stat)
401 return val & 0xffff;
402 udelay(1);
403 }
404 return -EIO;
405}
406
407static void snd_via82xx_codec_wait(ac97_t *ac97)
408{
409 via82xx_t *chip = ac97->private_data;
410 int err;
411 err = snd_via82xx_codec_ready(chip, ac97->num);
412
413 set_current_state(TASK_UNINTERRUPTIBLE);
414 schedule_timeout(HZ/2);
415}
416
417static void snd_via82xx_codec_write(ac97_t *ac97,
418 unsigned short reg,
419 unsigned short val)
420{
421 via82xx_t *chip = ac97->private_data;
422 unsigned int xval;
423
424 xval = !ac97->num ? VIA_REG_AC97_CODEC_ID_PRIMARY : VIA_REG_AC97_CODEC_ID_SECONDARY;
425 xval <<= VIA_REG_AC97_CODEC_ID_SHIFT;
426 xval |= reg << VIA_REG_AC97_CMD_SHIFT;
427 xval |= val << VIA_REG_AC97_DATA_SHIFT;
428 snd_via82xx_codec_xwrite(chip, xval);
429 snd_via82xx_codec_ready(chip, ac97->num);
430}
431
432static unsigned short snd_via82xx_codec_read(ac97_t *ac97, unsigned short reg)
433{
434 via82xx_t *chip = ac97->private_data;
435 unsigned int xval, val = 0xffff;
436 int again = 0;
437
438 xval = ac97->num << VIA_REG_AC97_CODEC_ID_SHIFT;
439 xval |= ac97->num ? VIA_REG_AC97_SECONDARY_VALID : VIA_REG_AC97_PRIMARY_VALID;
440 xval |= VIA_REG_AC97_READ;
441 xval |= (reg & 0x7f) << VIA_REG_AC97_CMD_SHIFT;
442 while (1) {
443 if (again++ > 3) {
444 snd_printk(KERN_ERR "codec_read: codec %i is not valid [0x%x]\n", 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(via82xx_t *chip, viadev_t *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, struct pt_regs *regs)
479{
480 via82xx_t *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 viadev_t *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(snd_pcm_substream_t * substream, int cmd)
517{
518 via82xx_t *chip = snd_pcm_substream_chip(substream);
519 viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
520 unsigned char val = 0;
521
522 switch (cmd) {
523 case SNDRV_PCM_TRIGGER_START:
524 val |= VIA_REG_CTRL_START;
525 viadev->running = 1;
526 break;
527 case SNDRV_PCM_TRIGGER_STOP:
528 val = VIA_REG_CTRL_TERMINATE;
529 viadev->running = 0;
530 break;
531 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
532 val |= VIA_REG_CTRL_PAUSE;
533 viadev->running = 0;
534 break;
535 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
536 viadev->running = 1;
537 break;
538 default:
539 return -EINVAL;
540 }
541 outb(val, VIADEV_REG(viadev, OFFSET_CONTROL));
542 if (cmd == SNDRV_PCM_TRIGGER_STOP)
543 snd_via82xx_channel_reset(chip, viadev);
544 return 0;
545}
546
547static int snd_via82xx_modem_pcm_trigger(snd_pcm_substream_t * substream, int cmd)
548{
549 via82xx_t *chip = snd_pcm_substream_chip(substream);
550 unsigned int val = 0;
551 switch (cmd) {
552 case SNDRV_PCM_TRIGGER_START:
553 val = snd_ac97_read(chip->ac97, AC97_GPIO_STATUS);
554 outl(val|AC97_GPIO_LINE1_OH, VIAREG(chip, GPI_STATUS));
555 break;
556 case SNDRV_PCM_TRIGGER_STOP:
557 val = snd_ac97_read(chip->ac97, AC97_GPIO_STATUS);
558 outl(val&~AC97_GPIO_LINE1_OH, VIAREG(chip, GPI_STATUS));
559 break;
560 default:
561 break;
562 }
563 return snd_via82xx_pcm_trigger(substream, cmd);
564}
565
566
567
568
569
570
571
572
573
574#define check_invalid_pos(viadev,pos) \
575 ((pos) < viadev->lastpos && ((pos) >= viadev->bufsize2 || viadev->lastpos < viadev->bufsize2))
576
577static inline unsigned int calc_linear_pos(viadev_t *viadev, unsigned int idx, unsigned int count)
578{
579 unsigned int size, res;
580
581 size = viadev->idx_table[idx].size;
582 res = viadev->idx_table[idx].offset + size - count;
583
584
585 if (size < count) {
586 snd_printd(KERN_ERR "invalid via82xx_cur_ptr (size = %d, count = %d)\n", (int)size, (int)count);
587 res = viadev->lastpos;
588 } else if (check_invalid_pos(viadev, res)) {
589#ifdef POINTER_DEBUG
590 printk("fail: idx = %i/%i, lastpos = 0x%x, bufsize2 = 0x%x, offsize = 0x%x, size = 0x%x, count = 0x%x\n", idx, viadev->tbl_entries, viadev->lastpos, viadev->bufsize2, viadev->idx_table[idx].offset, viadev->idx_table[idx].size, count);
591#endif
592 if (count && size < count) {
593 snd_printd(KERN_ERR "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 res = viadev->idx_table[idx].offset + size;
602 if (check_invalid_pos(viadev, res)) {
603 snd_printd(KERN_ERR "invalid via82xx_cur_ptr (2), using last valid pointer\n");
604 res = viadev->lastpos;
605 }
606 }
607 }
608 viadev->lastpos = res;
609 if (res >= viadev->bufsize)
610 res -= viadev->bufsize;
611 return res;
612}
613
614
615
616
617static snd_pcm_uframes_t snd_via686_pcm_pointer(snd_pcm_substream_t *substream)
618{
619 via82xx_t *chip = snd_pcm_substream_chip(substream);
620 viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
621 unsigned int idx, ptr, count, res;
622
623 snd_assert(viadev->tbl_entries, return 0);
624 if (!(inb(VIADEV_REG(viadev, OFFSET_STATUS)) & VIA_REG_STAT_ACTIVE))
625 return 0;
626
627 spin_lock(&chip->reg_lock);
628 count = inl(VIADEV_REG(viadev, OFFSET_CURR_COUNT)) & 0xffffff;
629
630
631
632 ptr = inl(VIADEV_REG(viadev, OFFSET_CURR_PTR));
633 if (ptr <= (unsigned int)viadev->table.addr)
634 idx = 0;
635 else
636 idx = ((ptr - (unsigned int)viadev->table.addr) / 8 - 1) % viadev->tbl_entries;
637 res = calc_linear_pos(viadev, idx, count);
638 spin_unlock(&chip->reg_lock);
639
640 return bytes_to_frames(substream->runtime, res);
641}
642
643
644
645
646
647static int snd_via82xx_hw_params(snd_pcm_substream_t * substream,
648 snd_pcm_hw_params_t * hw_params)
649{
650 via82xx_t *chip = snd_pcm_substream_chip(substream);
651 viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
652 int err;
653
654 err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
655 if (err < 0)
656 return err;
657 err = build_via_table(viadev, substream, chip->pci,
658 params_periods(hw_params),
659 params_period_bytes(hw_params));
660 if (err < 0)
661 return err;
662
663 snd_ac97_write(chip->ac97, AC97_LINE1_RATE, params_rate(hw_params));
664 snd_ac97_write(chip->ac97, AC97_LINE1_LEVEL, 0);
665
666 return 0;
667}
668
669
670
671
672
673static int snd_via82xx_hw_free(snd_pcm_substream_t * substream)
674{
675 via82xx_t *chip = snd_pcm_substream_chip(substream);
676 viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
677
678 clean_via_table(viadev, substream, chip->pci);
679 snd_pcm_lib_free_pages(substream);
680 return 0;
681}
682
683
684
685
686
687static void snd_via82xx_set_table_ptr(via82xx_t *chip, viadev_t *viadev)
688{
689 snd_via82xx_codec_ready(chip, chip->ac97_secondary);
690 outl((u32)viadev->table.addr, VIADEV_REG(viadev, OFFSET_TABLE_PTR));
691 udelay(20);
692 snd_via82xx_codec_ready(chip, chip->ac97_secondary);
693}
694
695
696
697
698static int snd_via82xx_pcm_prepare(snd_pcm_substream_t *substream)
699{
700 via82xx_t *chip = snd_pcm_substream_chip(substream);
701 viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
702
703 snd_via82xx_channel_reset(chip, viadev);
704
705 snd_via82xx_set_table_ptr(chip, viadev);
706 outb(VIA_REG_TYPE_AUTOSTART|VIA_REG_TYPE_INT_EOL|VIA_REG_TYPE_INT_FLAG,
707 VIADEV_REG(viadev, OFFSET_TYPE));
708 return 0;
709}
710
711
712
713
714static snd_pcm_hardware_t snd_via82xx_hw =
715{
716 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
717 SNDRV_PCM_INFO_BLOCK_TRANSFER |
718 SNDRV_PCM_INFO_MMAP_VALID |
719 SNDRV_PCM_INFO_RESUME |
720 SNDRV_PCM_INFO_PAUSE),
721 .formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE,
722 .rates = SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_KNOT,
723 .rate_min = 8000,
724 .rate_max = 16000,
725 .channels_min = 1,
726 .channels_max = 1,
727 .buffer_bytes_max = 128 * 1024,
728 .period_bytes_min = 32,
729 .period_bytes_max = 128 * 1024,
730 .periods_min = 2,
731 .periods_max = VIA_TABLE_SIZE / 2,
732 .fifo_size = 0,
733};
734
735
736
737
738
739static int snd_via82xx_modem_pcm_open(via82xx_t *chip, viadev_t *viadev, snd_pcm_substream_t * substream)
740{
741 snd_pcm_runtime_t *runtime = substream->runtime;
742 int err;
743 static unsigned int rates[] = { 8000, 9600, 12000, 16000 };
744 static snd_pcm_hw_constraint_list_t hw_constraints_rates = {
745 .count = ARRAY_SIZE(rates),
746 .list = rates,
747 .mask = 0,
748 };
749
750 runtime->hw = snd_via82xx_hw;
751
752 if ((err = snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, &hw_constraints_rates)) < 0)
753 return err;
754
755
756
757 if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
758 return err;
759
760 runtime->private_data = viadev;
761 viadev->substream = substream;
762
763 return 0;
764}
765
766
767
768
769
770static int snd_via82xx_playback_open(snd_pcm_substream_t * substream)
771{
772 via82xx_t *chip = snd_pcm_substream_chip(substream);
773 viadev_t *viadev = &chip->devs[chip->playback_devno + substream->number];
774
775 return snd_via82xx_modem_pcm_open(chip, viadev, substream);
776}
777
778
779
780
781static int snd_via82xx_capture_open(snd_pcm_substream_t * substream)
782{
783 via82xx_t *chip = snd_pcm_substream_chip(substream);
784 viadev_t *viadev = &chip->devs[chip->capture_devno + substream->pcm->device];
785
786 return snd_via82xx_modem_pcm_open(chip, viadev, substream);
787}
788
789
790
791
792static int snd_via82xx_pcm_close(snd_pcm_substream_t * substream)
793{
794 viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
795
796 viadev->substream = NULL;
797 return 0;
798}
799
800
801
802static snd_pcm_ops_t snd_via686_playback_ops = {
803 .open = snd_via82xx_playback_open,
804 .close = snd_via82xx_pcm_close,
805 .ioctl = snd_pcm_lib_ioctl,
806 .hw_params = snd_via82xx_hw_params,
807 .hw_free = snd_via82xx_hw_free,
808 .prepare = snd_via82xx_pcm_prepare,
809 .trigger = snd_via82xx_modem_pcm_trigger,
810 .pointer = snd_via686_pcm_pointer,
811 .page = snd_pcm_sgbuf_ops_page,
812};
813
814
815static snd_pcm_ops_t snd_via686_capture_ops = {
816 .open = snd_via82xx_capture_open,
817 .close = snd_via82xx_pcm_close,
818 .ioctl = snd_pcm_lib_ioctl,
819 .hw_params = snd_via82xx_hw_params,
820 .hw_free = snd_via82xx_hw_free,
821 .prepare = snd_via82xx_pcm_prepare,
822 .trigger = snd_via82xx_modem_pcm_trigger,
823 .pointer = snd_via686_pcm_pointer,
824 .page = snd_pcm_sgbuf_ops_page,
825};
826
827
828static void init_viadev(via82xx_t *chip, int idx, unsigned int reg_offset, int direction)
829{
830 chip->devs[idx].reg_offset = reg_offset;
831 chip->devs[idx].direction = direction;
832 chip->devs[idx].port = chip->port + reg_offset;
833}
834
835
836
837
838static int __devinit snd_via686_pcm_new(via82xx_t *chip)
839{
840 snd_pcm_t *pcm;
841 int err;
842
843 chip->playback_devno = 0;
844 chip->capture_devno = 1;
845 chip->num_devs = 2;
846 chip->intr_mask = 0x330000;
847
848 err = snd_pcm_new(chip->card, chip->card->shortname, 0, 1, 1, &pcm);
849 if (err < 0)
850 return err;
851 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via686_playback_ops);
852 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via686_capture_ops);
853 pcm->private_data = chip;
854 strcpy(pcm->name, chip->card->shortname);
855 chip->pcms[0] = pcm;
856 init_viadev(chip, 0, VIA_REG_MO_STATUS, 0);
857 init_viadev(chip, 1, VIA_REG_MI_STATUS, 1);
858
859 if ((err = snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
860 snd_dma_pci_data(chip->pci), 64*1024, 128*1024)) < 0)
861 return err;
862
863 return 0;
864}
865
866
867
868
869
870
871
872static void snd_via82xx_mixer_free_ac97_bus(ac97_bus_t *bus)
873{
874 via82xx_t *chip = bus->private_data;
875 chip->ac97_bus = NULL;
876}
877
878static void snd_via82xx_mixer_free_ac97(ac97_t *ac97)
879{
880 via82xx_t *chip = ac97->private_data;
881 chip->ac97 = NULL;
882}
883
884
885static int __devinit snd_via82xx_mixer_new(via82xx_t *chip)
886{
887 ac97_template_t ac97;
888 int err;
889 static ac97_bus_ops_t ops = {
890 .write = snd_via82xx_codec_write,
891 .read = snd_via82xx_codec_read,
892 .wait = snd_via82xx_codec_wait,
893 };
894
895 if ((err = snd_ac97_bus(chip->card, 0, &ops, chip, &chip->ac97_bus)) < 0)
896 return err;
897 chip->ac97_bus->private_free = snd_via82xx_mixer_free_ac97_bus;
898 chip->ac97_bus->clock = chip->ac97_clock;
899 chip->ac97_bus->shared_type = AC97_SHARED_TYPE_VIA;
900
901 memset(&ac97, 0, sizeof(ac97));
902 ac97.private_data = chip;
903 ac97.private_free = snd_via82xx_mixer_free_ac97;
904 ac97.pci = chip->pci;
905 ac97.scaps = AC97_SCAP_SKIP_AUDIO;
906 ac97.num = chip->ac97_secondary;
907
908 if ((err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97)) < 0)
909 return err;
910
911 return 0;
912}
913
914
915
916
917
918static void snd_via82xx_proc_read(snd_info_entry_t *entry, snd_info_buffer_t *buffer)
919{
920 via82xx_t *chip = entry->private_data;
921 int i;
922
923 snd_iprintf(buffer, "%s\n\n", chip->card->longname);
924 for (i = 0; i < 0xa0; i += 4) {
925 snd_iprintf(buffer, "%02x: %08x\n", i, inl(chip->port + i));
926 }
927}
928
929static void __devinit snd_via82xx_proc_init(via82xx_t *chip)
930{
931 snd_info_entry_t *entry;
932
933 if (! snd_card_proc_new(chip->card, "via82xx", &entry))
934 snd_info_set_text_ops(entry, chip, 1024, snd_via82xx_proc_read);
935}
936
937
938
939
940
941static int __devinit snd_via82xx_chip_init(via82xx_t *chip)
942{
943 ac97_t ac97;
944 unsigned int val;
945 int max_count;
946 unsigned char pval;
947
948 memset(&ac97, 0, sizeof(ac97));
949 ac97.private_data = chip;
950
951 pci_read_config_byte(chip->pci, VIA_MC97_CTRL, &pval);
952 if((pval & VIA_MC97_CTRL_INIT) != VIA_MC97_CTRL_INIT) {
953 pci_write_config_byte(chip->pci, 0x44, pval|VIA_MC97_CTRL_INIT);
954 udelay(100);
955 }
956
957 pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval);
958 if (! (pval & VIA_ACLINK_C00_READY)) {
959
960 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL,
961 VIA_ACLINK_CTRL_ENABLE |
962 VIA_ACLINK_CTRL_RESET |
963 VIA_ACLINK_CTRL_SYNC);
964 udelay(100);
965#if 1
966 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, 0x00);
967 udelay(100);
968#else
969
970 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL,
971 VIA_ACLINK_CTRL_RESET|VIA_ACLINK_CTRL_SYNC);
972 udelay(2);
973#endif
974
975 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT);
976 udelay(100);
977 }
978
979 pci_read_config_byte(chip->pci, VIA_ACLINK_CTRL, &pval);
980 if ((pval & VIA_ACLINK_CTRL_INIT) != VIA_ACLINK_CTRL_INIT) {
981
982 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT);
983 udelay(100);
984 }
985
986
987 max_count = ((3 * HZ) / 4) + 1;
988 do {
989 pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval);
990 if (pval & VIA_ACLINK_C00_READY)
991 break;
992 set_current_state(TASK_UNINTERRUPTIBLE);
993 schedule_timeout(1);
994 } while (--max_count > 0);
995
996 if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY)
997 snd_printk("AC'97 codec is not ready [0x%x]\n", val);
998
999
1000#if 0
1001 snd_via82xx_codec_ready(chip, 0);
1002 snd_via82xx_codec_write(&ac97, AC97_RESET, 0x0000);
1003 snd_via82xx_codec_read(&ac97, 0);
1004#endif
1005
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 max_count = ((3 * HZ) / 4) + 1;
1010 snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ |
1011 VIA_REG_AC97_SECONDARY_VALID |
1012 (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT));
1013 do {
1014 if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_SECONDARY_VALID) {
1015 chip->ac97_secondary = 1;
1016 goto __ac97_ok2;
1017 }
1018 set_current_state(TASK_INTERRUPTIBLE);
1019 schedule_timeout(1);
1020 } while (--max_count > 0);
1021
1022
1023 __ac97_ok2:
1024
1025
1026
1027
1028 outl(0, VIAREG(chip, GPI_INTR));
1029
1030 return 0;
1031}
1032
1033#ifdef CONFIG_PM
1034
1035
1036
1037static int snd_via82xx_suspend(snd_card_t *card, unsigned int state)
1038{
1039 via82xx_t *chip = card->pm_private_data;
1040 int i;
1041
1042 for (i = 0; i < 2; i++)
1043 if (chip->pcms[i])
1044 snd_pcm_suspend_all(chip->pcms[i]);
1045 for (i = 0; i < chip->num_devs; i++)
1046 snd_via82xx_channel_reset(chip, &chip->devs[i]);
1047 synchronize_irq(chip->irq);
1048 snd_ac97_suspend(chip->ac97);
1049 pci_set_power_state(chip->pci, 3);
1050 pci_disable_device(chip->pci);
1051 return 0;
1052}
1053
1054static int snd_via82xx_resume(snd_card_t *card, unsigned int state)
1055{
1056 via82xx_t *chip = card->pm_private_data;
1057 int i;
1058
1059 pci_enable_device(chip->pci);
1060 pci_set_power_state(chip->pci, 0);
1061 pci_set_master(chip->pci);
1062
1063 snd_via82xx_chip_init(chip);
1064
1065 snd_ac97_resume(chip->ac97);
1066
1067 for (i = 0; i < chip->num_devs; i++)
1068 snd_via82xx_channel_reset(chip, &chip->devs[i]);
1069
1070 return 0;
1071}
1072#endif
1073
1074static int snd_via82xx_free(via82xx_t *chip)
1075{
1076 unsigned int i;
1077
1078 if (chip->irq < 0)
1079 goto __end_hw;
1080
1081 for (i = 0; i < chip->num_devs; i++)
1082 snd_via82xx_channel_reset(chip, &chip->devs[i]);
1083 synchronize_irq(chip->irq);
1084 __end_hw:
1085 if (chip->irq >= 0)
1086 free_irq(chip->irq, (void *)chip);
1087 pci_release_regions(chip->pci);
1088 pci_disable_device(chip->pci);
1089 kfree(chip);
1090 return 0;
1091}
1092
1093static int snd_via82xx_dev_free(snd_device_t *device)
1094{
1095 via82xx_t *chip = device->device_data;
1096 return snd_via82xx_free(chip);
1097}
1098
1099static int __devinit snd_via82xx_create(snd_card_t * card,
1100 struct pci_dev *pci,
1101 int chip_type,
1102 int revision,
1103 unsigned int ac97_clock,
1104 via82xx_t ** r_via)
1105{
1106 via82xx_t *chip;
1107 int err;
1108 static snd_device_ops_t ops = {
1109 .dev_free = snd_via82xx_dev_free,
1110 };
1111
1112 if ((err = pci_enable_device(pci)) < 0)
1113 return err;
1114
1115 if ((chip = kcalloc(1, sizeof(*chip), GFP_KERNEL)) == NULL) {
1116 pci_disable_device(pci);
1117 return -ENOMEM;
1118 }
1119
1120 spin_lock_init(&chip->reg_lock);
1121 chip->card = card;
1122 chip->pci = pci;
1123 chip->irq = -1;
1124
1125 if ((err = pci_request_regions(pci, card->driver)) < 0) {
1126 kfree(chip);
1127 pci_disable_device(pci);
1128 return err;
1129 }
1130 chip->port = pci_resource_start(pci, 0);
1131 if (request_irq(pci->irq, snd_via82xx_interrupt, SA_INTERRUPT|SA_SHIRQ,
1132 card->driver, (void *)chip)) {
1133 snd_printk("unable to grab IRQ %d\n", pci->irq);
1134 snd_via82xx_free(chip);
1135 return -EBUSY;
1136 }
1137 chip->irq = pci->irq;
1138 if (ac97_clock >= 8000 && ac97_clock <= 48000)
1139 chip->ac97_clock = ac97_clock;
1140 synchronize_irq(chip->irq);
1141
1142 if ((err = snd_via82xx_chip_init(chip)) < 0) {
1143 snd_via82xx_free(chip);
1144 return err;
1145 }
1146
1147 if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
1148 snd_via82xx_free(chip);
1149 return err;
1150 }
1151
1152
1153
1154
1155 pci_set_master(pci);
1156
1157 snd_card_set_dev(card, &pci->dev);
1158
1159 *r_via = chip;
1160 return 0;
1161}
1162
1163
1164static int __devinit snd_via82xx_probe(struct pci_dev *pci,
1165 const struct pci_device_id *pci_id)
1166{
1167 static int dev;
1168 snd_card_t *card;
1169 via82xx_t *chip;
1170 unsigned char revision;
1171 int chip_type = 0, card_type;
1172 unsigned int i;
1173 int err;
1174
1175 if (dev >= SNDRV_CARDS)
1176 return -ENODEV;
1177 if (!enable[dev]) {
1178 dev++;
1179 return -ENOENT;
1180 }
1181
1182 card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
1183 if (card == NULL)
1184 return -ENOMEM;
1185
1186 card_type = pci_id->driver_data;
1187 pci_read_config_byte(pci, PCI_REVISION_ID, &revision);
1188 switch (card_type) {
1189 case TYPE_CARD_VIA82XX_MODEM:
1190 strcpy(card->driver, "VIA82XX-MODEM");
1191 sprintf(card->shortname, "VIA 82XX modem");
1192 break;
1193 default:
1194 snd_printk(KERN_ERR "invalid card type %d\n", card_type);
1195 err = -EINVAL;
1196 goto __error;
1197 }
1198
1199 if ((err = snd_via82xx_create(card, pci, chip_type, revision, ac97_clock[dev], &chip)) < 0)
1200 goto __error;
1201 if ((err = snd_via82xx_mixer_new(chip)) < 0)
1202 goto __error;
1203
1204 if ((err = snd_via686_pcm_new(chip)) < 0 )
1205 goto __error;
1206
1207 snd_card_set_pm_callback(card, snd_via82xx_suspend, snd_via82xx_resume, chip);
1208
1209
1210 for (i = 0; i < chip->num_devs; i++)
1211 snd_via82xx_channel_reset(chip, &chip->devs[i]);
1212
1213 sprintf(card->longname, "%s at 0x%lx, irq %d",
1214 card->shortname, chip->port, chip->irq);
1215
1216 snd_via82xx_proc_init(chip);
1217
1218 if ((err = snd_card_register(card)) < 0) {
1219 snd_card_free(card);
1220 return err;
1221 }
1222 pci_set_drvdata(pci, card);
1223 dev++;
1224 return 0;
1225
1226 __error:
1227 snd_card_free(card);
1228 return err;
1229}
1230
1231static void __devexit snd_via82xx_remove(struct pci_dev *pci)
1232{
1233 snd_card_free(pci_get_drvdata(pci));
1234 pci_set_drvdata(pci, NULL);
1235}
1236
1237static struct pci_driver driver = {
1238 .name = "VIA 82xx Modem",
1239 .id_table = snd_via82xx_modem_ids,
1240 .probe = snd_via82xx_probe,
1241 .remove = __devexit_p(snd_via82xx_remove),
1242 SND_PCI_PM_CALLBACKS
1243};
1244
1245static int __init alsa_card_via82xx_init(void)
1246{
1247 return pci_module_init(&driver);
1248}
1249
1250static void __exit alsa_card_via82xx_exit(void)
1251{
1252 pci_unregister_driver(&driver);
1253}
1254
1255module_init(alsa_card_via82xx_init)
1256module_exit(alsa_card_via82xx_exit)
1257
