blob: 4a9779cc97337e57ff77e63152f00cdbb36dcbef [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * ALSA modem driver for VIA VT82xx (South Bridge)
3 *
4 * VT82C686A/B/C, VT8233A/C, VT8235
5 *
6 * Copyright (c) 2000 Jaroslav Kysela <perex@suse.cz>
7 * Tjeerd.Mulder <Tjeerd.Mulder@fujitsu-siemens.com>
8 * 2002 Takashi Iwai <tiwai@suse.de>
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 *
24 */
25
26/*
27 * Changes:
28 *
29 * Sep. 2, 2004 Sasha Khapyorsky <sashak@smlink.com>
30 * Modified from original audio driver 'via82xx.c' to support AC97
31 * modems.
32 */
33
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] = {[0 ... (SNDRV_CARDS - 1)] = -2}; /* Exclude the first card */
59static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */
60static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; /* Enable this card */
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 * Direct registers
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/* common offsets */
81#define VIA_REG_OFFSET_STATUS 0x00 /* byte - channel status */
82#define VIA_REG_STAT_ACTIVE 0x80 /* RO */
83#define VIA_REG_STAT_PAUSED 0x40 /* RO */
84#define VIA_REG_STAT_TRIGGER_QUEUED 0x08 /* RO */
85#define VIA_REG_STAT_STOPPED 0x04 /* RWC */
86#define VIA_REG_STAT_EOL 0x02 /* RWC */
87#define VIA_REG_STAT_FLAG 0x01 /* RWC */
88#define VIA_REG_OFFSET_CONTROL 0x01 /* byte - channel control */
89#define VIA_REG_CTRL_START 0x80 /* WO */
90#define VIA_REG_CTRL_TERMINATE 0x40 /* WO */
91#define VIA_REG_CTRL_AUTOSTART 0x20
92#define VIA_REG_CTRL_PAUSE 0x08 /* RW */
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 /* RW - probably reset? undocumented */
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 /* byte - channel type (686 only) */
99#define VIA_REG_TYPE_AUTOSTART 0x80 /* RW - autostart at EOL */
100#define VIA_REG_TYPE_16BIT 0x20 /* RW */
101#define VIA_REG_TYPE_STEREO 0x10 /* RW */
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 /* dword - channel table pointer */
109#define VIA_REG_OFFSET_CURR_PTR 0x04 /* dword - channel current pointer */
110#define VIA_REG_OFFSET_STOP_IDX 0x08 /* dword - stop index, channel type, sample rate */
111#define VIA_REG_OFFSET_CURR_COUNT 0x0c /* dword - channel current count (24 bit) */
112#define VIA_REG_OFFSET_CURR_INDEX 0x0f /* byte - channel current index (for via8233 only) */
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/* modem block */
126DEFINE_VIA_REGSET(MO, 0x40);
127DEFINE_VIA_REGSET(MI, 0x50);
128
129/* AC'97 */
130#define VIA_REG_AC97 0x80 /* dword */
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 /* dword */
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/* pci space */
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 /* secondary codec ready */
177#define VIA_ACLINK_LOWPOWER 0x02 /* low-power state */
178#define VIA_ACLINK_C00_READY 0x01 /* primary codec ready */
179#define VIA_ACLINK_CTRL 0x41
180#define VIA_ACLINK_CTRL_ENABLE 0x80 /* 0: disable, 1: enable */
181#define VIA_ACLINK_CTRL_RESET 0x40 /* 0: assert, 1: de-assert */
182#define VIA_ACLINK_CTRL_SYNC 0x20 /* 0: release SYNC, 1: force SYNC hi */
183#define VIA_ACLINK_CTRL_SDO 0x10 /* 0: release SDO, 1: force SDO hi */
184#define VIA_ACLINK_CTRL_VRA 0x08 /* 0: disable VRA, 1: enable VRA */
185#define VIA_ACLINK_CTRL_PCM 0x04 /* 0: disable PCM, 1: enable PCM */
186#define VIA_ACLINK_CTRL_FM 0x02 /* via686 only */
187#define VIA_ACLINK_CTRL_SB 0x01 /* via686 only */
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 /* FIXME: it's 0x40 in the datasheet! */
193#define VIA_FUNC_MIDI_IRQMASK 0x40 /* FIXME: not documented! */
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 * pcm stream
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; /* playback = 0, capture = 1 */
226 snd_pcm_substream_t *substream;
227 int running;
228 unsigned int tbl_entries; /* # descriptors */
229 struct snd_dma_buffer table;
230 struct snd_via_sg_table *idx_table;
231 /* for recovery from the unexpected pointer */
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; /* SGD_SHADOW mask to check interrupts */
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; /* secondary AC'97 codec is present */
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 * allocate and initialize the descriptor buffers
278 * periods = number of periods
279 * fragsize = period size in bytes
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 /* the start of each lists must be aligned to 8 bytes,
291 * but the kernel pages are much bigger, so we don't care
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 /* fill the entries */
305 idx = 0;
306 ofs = 0;
307 for (i = 0; i < periods; i++) {
308 rest = fragsize;
309 /* fill descriptors for a period.
310 * a period can be split to several descriptors if it's
311 * over page boundary.
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; /* buffer boundary */
329 else
330 flag = VIA_TBL_BIT_FLAG; /* period boundary */
331 } else
332 flag = 0; /* period continues to the next */
333 // printk("via: tbl %d: at %d size %d (rest %d)\n", idx, ofs, r, rest);
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 }
Jesper Juhl4d572772005-05-30 17:30:32 +0200355 kfree(dev->idx_table);
356 dev->idx_table = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700357 return 0;
358}
359
360/*
361 * Basic I/O
362 */
363
364static inline unsigned int snd_via82xx_codec_xread(via82xx_t *chip)
365{
366 return inl(VIAREG(chip, AC97));
367}
368
369static inline void snd_via82xx_codec_xwrite(via82xx_t *chip, unsigned int val)
370{
371 outl(val, VIAREG(chip, AC97));
372}
373
374static int snd_via82xx_codec_ready(via82xx_t *chip, int secondary)
375{
376 unsigned int timeout = 1000; /* 1ms */
377 unsigned int val;
378
379 while (timeout-- > 0) {
380 udelay(1);
381 if (!((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY))
382 return val & 0xffff;
383 }
384 snd_printk(KERN_ERR "codec_ready: codec %i is not ready [0x%x]\n", secondary, snd_via82xx_codec_xread(chip));
385 return -EIO;
386}
387
388static int snd_via82xx_codec_valid(via82xx_t *chip, int secondary)
389{
390 unsigned int timeout = 1000; /* 1ms */
391 unsigned int val, val1;
392 unsigned int stat = !secondary ? VIA_REG_AC97_PRIMARY_VALID :
393 VIA_REG_AC97_SECONDARY_VALID;
394
395 while (timeout-- > 0) {
396 val = snd_via82xx_codec_xread(chip);
397 val1 = val & (VIA_REG_AC97_BUSY | stat);
398 if (val1 == stat)
399 return val & 0xffff;
400 udelay(1);
401 }
402 return -EIO;
403}
404
405static void snd_via82xx_codec_wait(ac97_t *ac97)
406{
407 via82xx_t *chip = ac97->private_data;
408 int err;
409 err = snd_via82xx_codec_ready(chip, ac97->num);
410 /* here we need to wait fairly for long time.. */
Nishanth Aravamudanef21ca22005-07-09 10:13:22 +0200411 msleep(500);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700412}
413
414static void snd_via82xx_codec_write(ac97_t *ac97,
415 unsigned short reg,
416 unsigned short val)
417{
418 via82xx_t *chip = ac97->private_data;
419 unsigned int xval;
Sasha Khapyorsky83a5b722005-05-29 15:10:07 +0200420 if(reg == AC97_GPIO_STATUS) {
421 outl(val, VIAREG(chip, GPI_STATUS));
422 return;
423 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700424 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 /* disable interrupts */
465 outb(0x00, VIADEV_REG(viadev, OFFSET_CONTROL));
466 /* clear interrupts */
467 outb(0x03, VIADEV_REG(viadev, OFFSET_STATUS));
468 outb(0x00, VIADEV_REG(viadev, OFFSET_TYPE)); /* for via686 */
469 // outl(0, VIADEV_REG(viadev, OFFSET_CURR_PTR));
470 viadev->lastpos = 0;
471}
472
473
474/*
475 * Interrupt handler
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// _skip_sgd:
489
490 /* check status for each stream */
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)); /* ack */
504 }
505 spin_unlock(&chip->reg_lock);
506 return IRQ_HANDLED;
507}
508
509/*
510 * PCM callbacks
511 */
512
513/*
514 * trigger callback
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
Linus Torvalds1da177e2005-04-16 15:20:36 -0700547/*
548 * pointer callbacks
549 */
550
551/*
552 * calculate the linear position at the given sg-buffer index and the rest count
553 */
554
555#define check_invalid_pos(viadev,pos) \
556 ((pos) < viadev->lastpos && ((pos) >= viadev->bufsize2 || viadev->lastpos < viadev->bufsize2))
557
558static inline unsigned int calc_linear_pos(viadev_t *viadev, unsigned int idx, unsigned int count)
559{
560 unsigned int size, res;
561
562 size = viadev->idx_table[idx].size;
563 res = viadev->idx_table[idx].offset + size - count;
564
565 /* check the validity of the calculated position */
566 if (size < count) {
567 snd_printd(KERN_ERR "invalid via82xx_cur_ptr (size = %d, count = %d)\n", (int)size, (int)count);
568 res = viadev->lastpos;
569 } else if (check_invalid_pos(viadev, res)) {
570#ifdef POINTER_DEBUG
571 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);
572#endif
573 if (count && size < count) {
574 snd_printd(KERN_ERR "invalid via82xx_cur_ptr, using last valid pointer\n");
575 res = viadev->lastpos;
576 } else {
577 if (! count)
578 /* bogus count 0 on the DMA boundary? */
579 res = viadev->idx_table[idx].offset;
580 else
581 /* count register returns full size when end of buffer is reached */
582 res = viadev->idx_table[idx].offset + size;
583 if (check_invalid_pos(viadev, res)) {
584 snd_printd(KERN_ERR "invalid via82xx_cur_ptr (2), using last valid pointer\n");
585 res = viadev->lastpos;
586 }
587 }
588 }
589 viadev->lastpos = res; /* remember the last position */
590 if (res >= viadev->bufsize)
591 res -= viadev->bufsize;
592 return res;
593}
594
595/*
596 * get the current pointer on via686
597 */
598static snd_pcm_uframes_t snd_via686_pcm_pointer(snd_pcm_substream_t *substream)
599{
600 via82xx_t *chip = snd_pcm_substream_chip(substream);
601 viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
602 unsigned int idx, ptr, count, res;
603
604 snd_assert(viadev->tbl_entries, return 0);
605 if (!(inb(VIADEV_REG(viadev, OFFSET_STATUS)) & VIA_REG_STAT_ACTIVE))
606 return 0;
607
608 spin_lock(&chip->reg_lock);
609 count = inl(VIADEV_REG(viadev, OFFSET_CURR_COUNT)) & 0xffffff;
610 /* The via686a does not have the current index register,
611 * so we need to calculate the index from CURR_PTR.
612 */
613 ptr = inl(VIADEV_REG(viadev, OFFSET_CURR_PTR));
614 if (ptr <= (unsigned int)viadev->table.addr)
615 idx = 0;
616 else /* CURR_PTR holds the address + 8 */
617 idx = ((ptr - (unsigned int)viadev->table.addr) / 8 - 1) % viadev->tbl_entries;
618 res = calc_linear_pos(viadev, idx, count);
619 spin_unlock(&chip->reg_lock);
620
621 return bytes_to_frames(substream->runtime, res);
622}
623
624/*
625 * hw_params callback:
626 * allocate the buffer and build up the buffer description table
627 */
628static int snd_via82xx_hw_params(snd_pcm_substream_t * substream,
629 snd_pcm_hw_params_t * hw_params)
630{
631 via82xx_t *chip = snd_pcm_substream_chip(substream);
632 viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
633 int err;
634
635 err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
636 if (err < 0)
637 return err;
638 err = build_via_table(viadev, substream, chip->pci,
639 params_periods(hw_params),
640 params_period_bytes(hw_params));
641 if (err < 0)
642 return err;
643
644 snd_ac97_write(chip->ac97, AC97_LINE1_RATE, params_rate(hw_params));
645 snd_ac97_write(chip->ac97, AC97_LINE1_LEVEL, 0);
646
647 return 0;
648}
649
650/*
651 * hw_free callback:
652 * clean up the buffer description table and release the buffer
653 */
654static int snd_via82xx_hw_free(snd_pcm_substream_t * substream)
655{
656 via82xx_t *chip = snd_pcm_substream_chip(substream);
657 viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
658
659 clean_via_table(viadev, substream, chip->pci);
660 snd_pcm_lib_free_pages(substream);
661 return 0;
662}
663
664
665/*
666 * set up the table pointer
667 */
668static void snd_via82xx_set_table_ptr(via82xx_t *chip, viadev_t *viadev)
669{
670 snd_via82xx_codec_ready(chip, chip->ac97_secondary);
671 outl((u32)viadev->table.addr, VIADEV_REG(viadev, OFFSET_TABLE_PTR));
672 udelay(20);
673 snd_via82xx_codec_ready(chip, chip->ac97_secondary);
674}
675
676/*
677 * prepare callback for playback and capture
678 */
679static int snd_via82xx_pcm_prepare(snd_pcm_substream_t *substream)
680{
681 via82xx_t *chip = snd_pcm_substream_chip(substream);
682 viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
683
684 snd_via82xx_channel_reset(chip, viadev);
685 /* this must be set after channel_reset */
686 snd_via82xx_set_table_ptr(chip, viadev);
687 outb(VIA_REG_TYPE_AUTOSTART|VIA_REG_TYPE_INT_EOL|VIA_REG_TYPE_INT_FLAG,
688 VIADEV_REG(viadev, OFFSET_TYPE));
689 return 0;
690}
691
692/*
693 * pcm hardware definition, identical for both playback and capture
694 */
695static snd_pcm_hardware_t snd_via82xx_hw =
696{
697 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
698 SNDRV_PCM_INFO_BLOCK_TRANSFER |
699 SNDRV_PCM_INFO_MMAP_VALID |
700 SNDRV_PCM_INFO_RESUME |
701 SNDRV_PCM_INFO_PAUSE),
702 .formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE,
703 .rates = SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_KNOT,
704 .rate_min = 8000,
705 .rate_max = 16000,
706 .channels_min = 1,
707 .channels_max = 1,
708 .buffer_bytes_max = 128 * 1024,
709 .period_bytes_min = 32,
710 .period_bytes_max = 128 * 1024,
711 .periods_min = 2,
712 .periods_max = VIA_TABLE_SIZE / 2,
713 .fifo_size = 0,
714};
715
716
717/*
718 * open callback skeleton
719 */
720static int snd_via82xx_modem_pcm_open(via82xx_t *chip, viadev_t *viadev, snd_pcm_substream_t * substream)
721{
722 snd_pcm_runtime_t *runtime = substream->runtime;
723 int err;
724 static unsigned int rates[] = { 8000, 9600, 12000, 16000 };
725 static snd_pcm_hw_constraint_list_t hw_constraints_rates = {
726 .count = ARRAY_SIZE(rates),
727 .list = rates,
728 .mask = 0,
729 };
730
731 runtime->hw = snd_via82xx_hw;
732
733 if ((err = snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, &hw_constraints_rates)) < 0)
734 return err;
735
736 /* we may remove following constaint when we modify table entries
737 in interrupt */
738 if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
739 return err;
740
741 runtime->private_data = viadev;
742 viadev->substream = substream;
743
744 return 0;
745}
746
747
748/*
749 * open callback for playback
750 */
751static int snd_via82xx_playback_open(snd_pcm_substream_t * substream)
752{
753 via82xx_t *chip = snd_pcm_substream_chip(substream);
754 viadev_t *viadev = &chip->devs[chip->playback_devno + substream->number];
755
756 return snd_via82xx_modem_pcm_open(chip, viadev, substream);
757}
758
759/*
760 * open callback for capture
761 */
762static int snd_via82xx_capture_open(snd_pcm_substream_t * substream)
763{
764 via82xx_t *chip = snd_pcm_substream_chip(substream);
765 viadev_t *viadev = &chip->devs[chip->capture_devno + substream->pcm->device];
766
767 return snd_via82xx_modem_pcm_open(chip, viadev, substream);
768}
769
770/*
771 * close callback
772 */
773static int snd_via82xx_pcm_close(snd_pcm_substream_t * substream)
774{
775 viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
776
777 viadev->substream = NULL;
778 return 0;
779}
780
781
782/* via686 playback callbacks */
783static snd_pcm_ops_t snd_via686_playback_ops = {
784 .open = snd_via82xx_playback_open,
785 .close = snd_via82xx_pcm_close,
786 .ioctl = snd_pcm_lib_ioctl,
787 .hw_params = snd_via82xx_hw_params,
788 .hw_free = snd_via82xx_hw_free,
789 .prepare = snd_via82xx_pcm_prepare,
Sasha Khapyorsky83a5b722005-05-29 15:10:07 +0200790 .trigger = snd_via82xx_pcm_trigger,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700791 .pointer = snd_via686_pcm_pointer,
792 .page = snd_pcm_sgbuf_ops_page,
793};
794
795/* via686 capture callbacks */
796static snd_pcm_ops_t snd_via686_capture_ops = {
797 .open = snd_via82xx_capture_open,
798 .close = snd_via82xx_pcm_close,
799 .ioctl = snd_pcm_lib_ioctl,
800 .hw_params = snd_via82xx_hw_params,
801 .hw_free = snd_via82xx_hw_free,
802 .prepare = snd_via82xx_pcm_prepare,
Sasha Khapyorsky83a5b722005-05-29 15:10:07 +0200803 .trigger = snd_via82xx_pcm_trigger,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700804 .pointer = snd_via686_pcm_pointer,
805 .page = snd_pcm_sgbuf_ops_page,
806};
807
808
809static void init_viadev(via82xx_t *chip, int idx, unsigned int reg_offset, int direction)
810{
811 chip->devs[idx].reg_offset = reg_offset;
812 chip->devs[idx].direction = direction;
813 chip->devs[idx].port = chip->port + reg_offset;
814}
815
816/*
817 * create a pcm instance for via686a/b
818 */
819static int __devinit snd_via686_pcm_new(via82xx_t *chip)
820{
821 snd_pcm_t *pcm;
822 int err;
823
824 chip->playback_devno = 0;
825 chip->capture_devno = 1;
826 chip->num_devs = 2;
827 chip->intr_mask = 0x330000; /* FLAGS | EOL for MR, MW */
828
829 err = snd_pcm_new(chip->card, chip->card->shortname, 0, 1, 1, &pcm);
830 if (err < 0)
831 return err;
832 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via686_playback_ops);
833 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via686_capture_ops);
834 pcm->private_data = chip;
835 strcpy(pcm->name, chip->card->shortname);
836 chip->pcms[0] = pcm;
837 init_viadev(chip, 0, VIA_REG_MO_STATUS, 0);
838 init_viadev(chip, 1, VIA_REG_MI_STATUS, 1);
839
840 if ((err = snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
841 snd_dma_pci_data(chip->pci), 64*1024, 128*1024)) < 0)
842 return err;
843
844 return 0;
845}
846
847
848/*
849 * Mixer part
850 */
851
852
853static void snd_via82xx_mixer_free_ac97_bus(ac97_bus_t *bus)
854{
855 via82xx_t *chip = bus->private_data;
856 chip->ac97_bus = NULL;
857}
858
859static void snd_via82xx_mixer_free_ac97(ac97_t *ac97)
860{
861 via82xx_t *chip = ac97->private_data;
862 chip->ac97 = NULL;
863}
864
865
866static int __devinit snd_via82xx_mixer_new(via82xx_t *chip)
867{
868 ac97_template_t ac97;
869 int err;
870 static ac97_bus_ops_t ops = {
871 .write = snd_via82xx_codec_write,
872 .read = snd_via82xx_codec_read,
873 .wait = snd_via82xx_codec_wait,
874 };
875
876 if ((err = snd_ac97_bus(chip->card, 0, &ops, chip, &chip->ac97_bus)) < 0)
877 return err;
878 chip->ac97_bus->private_free = snd_via82xx_mixer_free_ac97_bus;
879 chip->ac97_bus->clock = chip->ac97_clock;
880 chip->ac97_bus->shared_type = AC97_SHARED_TYPE_VIA;
881
882 memset(&ac97, 0, sizeof(ac97));
883 ac97.private_data = chip;
884 ac97.private_free = snd_via82xx_mixer_free_ac97;
885 ac97.pci = chip->pci;
886 ac97.scaps = AC97_SCAP_SKIP_AUDIO;
887 ac97.num = chip->ac97_secondary;
888
889 if ((err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97)) < 0)
890 return err;
891
892 return 0;
893}
894
895
896/*
897 * proc interface
898 */
899static void snd_via82xx_proc_read(snd_info_entry_t *entry, snd_info_buffer_t *buffer)
900{
901 via82xx_t *chip = entry->private_data;
902 int i;
903
904 snd_iprintf(buffer, "%s\n\n", chip->card->longname);
905 for (i = 0; i < 0xa0; i += 4) {
906 snd_iprintf(buffer, "%02x: %08x\n", i, inl(chip->port + i));
907 }
908}
909
910static void __devinit snd_via82xx_proc_init(via82xx_t *chip)
911{
912 snd_info_entry_t *entry;
913
914 if (! snd_card_proc_new(chip->card, "via82xx", &entry))
915 snd_info_set_text_ops(entry, chip, 1024, snd_via82xx_proc_read);
916}
917
918/*
919 *
920 */
921
Takashi Iwai58c1f8a2005-05-20 16:13:00 +0200922static int snd_via82xx_chip_init(via82xx_t *chip)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700923{
924 unsigned int val;
Nishanth Aravamudanef21ca22005-07-09 10:13:22 +0200925 unsigned long end_time;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700926 unsigned char pval;
927
928 pci_read_config_byte(chip->pci, VIA_MC97_CTRL, &pval);
929 if((pval & VIA_MC97_CTRL_INIT) != VIA_MC97_CTRL_INIT) {
930 pci_write_config_byte(chip->pci, 0x44, pval|VIA_MC97_CTRL_INIT);
931 udelay(100);
932 }
933
934 pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval);
935 if (! (pval & VIA_ACLINK_C00_READY)) { /* codec not ready? */
936 /* deassert ACLink reset, force SYNC */
937 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL,
938 VIA_ACLINK_CTRL_ENABLE |
939 VIA_ACLINK_CTRL_RESET |
940 VIA_ACLINK_CTRL_SYNC);
941 udelay(100);
942#if 1 /* FIXME: should we do full reset here for all chip models? */
943 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, 0x00);
944 udelay(100);
945#else
946 /* deassert ACLink reset, force SYNC (warm AC'97 reset) */
947 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL,
948 VIA_ACLINK_CTRL_RESET|VIA_ACLINK_CTRL_SYNC);
949 udelay(2);
950#endif
951 /* ACLink on, deassert ACLink reset, VSR, SGD data out */
952 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT);
953 udelay(100);
954 }
955
956 pci_read_config_byte(chip->pci, VIA_ACLINK_CTRL, &pval);
957 if ((pval & VIA_ACLINK_CTRL_INIT) != VIA_ACLINK_CTRL_INIT) {
958 /* ACLink on, deassert ACLink reset, VSR, SGD data out */
959 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT);
960 udelay(100);
961 }
962
963 /* wait until codec ready */
Nishanth Aravamudanef21ca22005-07-09 10:13:22 +0200964 end_time = jiffies + msecs_to_jiffies(750);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700965 do {
966 pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval);
967 if (pval & VIA_ACLINK_C00_READY) /* primary codec ready */
968 break;
969 set_current_state(TASK_UNINTERRUPTIBLE);
970 schedule_timeout(1);
Nishanth Aravamudanef21ca22005-07-09 10:13:22 +0200971 } while (time_before(jiffies, end_time));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700972
973 if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY)
974 snd_printk("AC'97 codec is not ready [0x%x]\n", val);
975
976 snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ |
977 VIA_REG_AC97_SECONDARY_VALID |
978 (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT));
Nishanth Aravamudanef21ca22005-07-09 10:13:22 +0200979 end_time = jiffies + msecs_to_jiffies(750);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700980 snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ |
981 VIA_REG_AC97_SECONDARY_VALID |
982 (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT));
983 do {
984 if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_SECONDARY_VALID) {
985 chip->ac97_secondary = 1;
986 goto __ac97_ok2;
987 }
988 set_current_state(TASK_INTERRUPTIBLE);
989 schedule_timeout(1);
Nishanth Aravamudanef21ca22005-07-09 10:13:22 +0200990 } while (time_before(jiffies, end_time));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700991 /* This is ok, the most of motherboards have only one codec */
992
993 __ac97_ok2:
994
995 /* route FM trap to IRQ, disable FM trap */
996 // pci_write_config_byte(chip->pci, VIA_FM_NMI_CTRL, 0);
997 /* disable all GPI interrupts */
998 outl(0, VIAREG(chip, GPI_INTR));
999
1000 return 0;
1001}
1002
1003#ifdef CONFIG_PM
1004/*
1005 * power management
1006 */
1007static int snd_via82xx_suspend(snd_card_t *card, pm_message_t state)
1008{
1009 via82xx_t *chip = card->pm_private_data;
1010 int i;
1011
1012 for (i = 0; i < 2; i++)
1013 if (chip->pcms[i])
1014 snd_pcm_suspend_all(chip->pcms[i]);
1015 for (i = 0; i < chip->num_devs; i++)
1016 snd_via82xx_channel_reset(chip, &chip->devs[i]);
1017 synchronize_irq(chip->irq);
1018 snd_ac97_suspend(chip->ac97);
1019 pci_set_power_state(chip->pci, 3);
1020 pci_disable_device(chip->pci);
1021 return 0;
1022}
1023
1024static int snd_via82xx_resume(snd_card_t *card)
1025{
1026 via82xx_t *chip = card->pm_private_data;
1027 int i;
1028
1029 pci_enable_device(chip->pci);
1030 pci_set_power_state(chip->pci, 0);
1031 pci_set_master(chip->pci);
1032
1033 snd_via82xx_chip_init(chip);
1034
1035 snd_ac97_resume(chip->ac97);
1036
1037 for (i = 0; i < chip->num_devs; i++)
1038 snd_via82xx_channel_reset(chip, &chip->devs[i]);
1039
1040 return 0;
1041}
1042#endif /* CONFIG_PM */
1043
1044static int snd_via82xx_free(via82xx_t *chip)
1045{
1046 unsigned int i;
1047
1048 if (chip->irq < 0)
1049 goto __end_hw;
1050 /* disable interrupts */
1051 for (i = 0; i < chip->num_devs; i++)
1052 snd_via82xx_channel_reset(chip, &chip->devs[i]);
1053 synchronize_irq(chip->irq);
1054 __end_hw:
1055 if (chip->irq >= 0)
1056 free_irq(chip->irq, (void *)chip);
1057 pci_release_regions(chip->pci);
1058 pci_disable_device(chip->pci);
1059 kfree(chip);
1060 return 0;
1061}
1062
1063static int snd_via82xx_dev_free(snd_device_t *device)
1064{
1065 via82xx_t *chip = device->device_data;
1066 return snd_via82xx_free(chip);
1067}
1068
1069static int __devinit snd_via82xx_create(snd_card_t * card,
1070 struct pci_dev *pci,
1071 int chip_type,
1072 int revision,
1073 unsigned int ac97_clock,
1074 via82xx_t ** r_via)
1075{
1076 via82xx_t *chip;
1077 int err;
1078 static snd_device_ops_t ops = {
1079 .dev_free = snd_via82xx_dev_free,
1080 };
1081
1082 if ((err = pci_enable_device(pci)) < 0)
1083 return err;
1084
1085 if ((chip = kcalloc(1, sizeof(*chip), GFP_KERNEL)) == NULL) {
1086 pci_disable_device(pci);
1087 return -ENOMEM;
1088 }
1089
1090 spin_lock_init(&chip->reg_lock);
1091 chip->card = card;
1092 chip->pci = pci;
1093 chip->irq = -1;
1094
1095 if ((err = pci_request_regions(pci, card->driver)) < 0) {
1096 kfree(chip);
1097 pci_disable_device(pci);
1098 return err;
1099 }
1100 chip->port = pci_resource_start(pci, 0);
1101 if (request_irq(pci->irq, snd_via82xx_interrupt, SA_INTERRUPT|SA_SHIRQ,
1102 card->driver, (void *)chip)) {
1103 snd_printk("unable to grab IRQ %d\n", pci->irq);
1104 snd_via82xx_free(chip);
1105 return -EBUSY;
1106 }
1107 chip->irq = pci->irq;
1108 if (ac97_clock >= 8000 && ac97_clock <= 48000)
1109 chip->ac97_clock = ac97_clock;
1110 synchronize_irq(chip->irq);
1111
1112 if ((err = snd_via82xx_chip_init(chip)) < 0) {
1113 snd_via82xx_free(chip);
1114 return err;
1115 }
1116
1117 if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
1118 snd_via82xx_free(chip);
1119 return err;
1120 }
1121
1122 /* The 8233 ac97 controller does not implement the master bit
1123 * in the pci command register. IMHO this is a violation of the PCI spec.
1124 * We call pci_set_master here because it does not hurt. */
1125 pci_set_master(pci);
1126
1127 snd_card_set_dev(card, &pci->dev);
1128
1129 *r_via = chip;
1130 return 0;
1131}
1132
1133
1134static int __devinit snd_via82xx_probe(struct pci_dev *pci,
1135 const struct pci_device_id *pci_id)
1136{
1137 static int dev;
1138 snd_card_t *card;
1139 via82xx_t *chip;
1140 unsigned char revision;
1141 int chip_type = 0, card_type;
1142 unsigned int i;
1143 int err;
1144
1145 if (dev >= SNDRV_CARDS)
1146 return -ENODEV;
1147 if (!enable[dev]) {
1148 dev++;
1149 return -ENOENT;
1150 }
1151
1152 card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
1153 if (card == NULL)
1154 return -ENOMEM;
1155
1156 card_type = pci_id->driver_data;
1157 pci_read_config_byte(pci, PCI_REVISION_ID, &revision);
1158 switch (card_type) {
1159 case TYPE_CARD_VIA82XX_MODEM:
1160 strcpy(card->driver, "VIA82XX-MODEM");
1161 sprintf(card->shortname, "VIA 82XX modem");
1162 break;
1163 default:
1164 snd_printk(KERN_ERR "invalid card type %d\n", card_type);
1165 err = -EINVAL;
1166 goto __error;
1167 }
1168
1169 if ((err = snd_via82xx_create(card, pci, chip_type, revision, ac97_clock[dev], &chip)) < 0)
1170 goto __error;
1171 if ((err = snd_via82xx_mixer_new(chip)) < 0)
1172 goto __error;
1173
1174 if ((err = snd_via686_pcm_new(chip)) < 0 )
1175 goto __error;
1176
1177 snd_card_set_pm_callback(card, snd_via82xx_suspend, snd_via82xx_resume, chip);
1178
1179 /* disable interrupts */
1180 for (i = 0; i < chip->num_devs; i++)
1181 snd_via82xx_channel_reset(chip, &chip->devs[i]);
1182
1183 sprintf(card->longname, "%s at 0x%lx, irq %d",
1184 card->shortname, chip->port, chip->irq);
1185
1186 snd_via82xx_proc_init(chip);
1187
1188 if ((err = snd_card_register(card)) < 0) {
1189 snd_card_free(card);
1190 return err;
1191 }
1192 pci_set_drvdata(pci, card);
1193 dev++;
1194 return 0;
1195
1196 __error:
1197 snd_card_free(card);
1198 return err;
1199}
1200
1201static void __devexit snd_via82xx_remove(struct pci_dev *pci)
1202{
1203 snd_card_free(pci_get_drvdata(pci));
1204 pci_set_drvdata(pci, NULL);
1205}
1206
1207static struct pci_driver driver = {
1208 .name = "VIA 82xx Modem",
1209 .id_table = snd_via82xx_modem_ids,
1210 .probe = snd_via82xx_probe,
1211 .remove = __devexit_p(snd_via82xx_remove),
1212 SND_PCI_PM_CALLBACKS
1213};
1214
1215static int __init alsa_card_via82xx_init(void)
1216{
Takashi Iwai01d25d42005-04-11 16:58:24 +02001217 return pci_register_driver(&driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001218}
1219
1220static void __exit alsa_card_via82xx_exit(void)
1221{
1222 pci_unregister_driver(&driver);
1223}
1224
1225module_init(alsa_card_via82xx_init)
1226module_exit(alsa_card_via82xx_exit)