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[mirror_ubuntu-eoan-kernel.git] / sound / pci / via82xx_modem.c
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * ALSA modem driver for VIA VT82xx (South Bridge)
4 *
5 * VT82C686A/B/C, VT8233A/C, VT8235
6 *
7 * Copyright (c) 2000 Jaroslav Kysela <perex@perex.cz>
8 * Tjeerd.Mulder <Tjeerd.Mulder@fujitsu-siemens.com>
9 * 2002 Takashi Iwai <tiwai@suse.de>
10 */
11
12 /*
13 * Changes:
14 *
15 * Sep. 2, 2004 Sasha Khapyorsky <sashak@alsa-project.org>
16 * Modified from original audio driver 'via82xx.c' to support AC97
17 * modems.
18 */
19
20 #include <linux/io.h>
21 #include <linux/delay.h>
22 #include <linux/interrupt.h>
23 #include <linux/init.h>
24 #include <linux/pci.h>
25 #include <linux/slab.h>
26 #include <linux/module.h>
27 #include <sound/core.h>
28 #include <sound/pcm.h>
29 #include <sound/pcm_params.h>
30 #include <sound/info.h>
31 #include <sound/ac97_codec.h>
32 #include <sound/initval.h>
33
34 #if 0
35 #define POINTER_DEBUG
36 #endif
37
38 MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
39 MODULE_DESCRIPTION("VIA VT82xx modem");
40 MODULE_LICENSE("GPL");
41 MODULE_SUPPORTED_DEVICE("{{VIA,VT82C686A/B/C modem,pci}}");
42
43 static int index = -2; /* Exclude the first card */
44 static char *id = SNDRV_DEFAULT_STR1; /* ID for this card */
45 static int ac97_clock = 48000;
46
47 module_param(index, int, 0444);
48 MODULE_PARM_DESC(index, "Index value for VIA 82xx bridge.");
49 module_param(id, charp, 0444);
50 MODULE_PARM_DESC(id, "ID string for VIA 82xx bridge.");
51 module_param(ac97_clock, int, 0444);
52 MODULE_PARM_DESC(ac97_clock, "AC'97 codec clock (default 48000Hz).");
53
54 /* just for backward compatibility */
55 static bool enable;
56 module_param(enable, bool, 0444);
57
58
59 /*
60 * Direct registers
61 */
62
63 #define VIAREG(via, x) ((via)->port + VIA_REG_##x)
64 #define VIADEV_REG(viadev, x) ((viadev)->port + VIA_REG_##x)
65
66 /* common offsets */
67 #define VIA_REG_OFFSET_STATUS 0x00 /* byte - channel status */
68 #define VIA_REG_STAT_ACTIVE 0x80 /* RO */
69 #define VIA_REG_STAT_PAUSED 0x40 /* RO */
70 #define VIA_REG_STAT_TRIGGER_QUEUED 0x08 /* RO */
71 #define VIA_REG_STAT_STOPPED 0x04 /* RWC */
72 #define VIA_REG_STAT_EOL 0x02 /* RWC */
73 #define VIA_REG_STAT_FLAG 0x01 /* RWC */
74 #define VIA_REG_OFFSET_CONTROL 0x01 /* byte - channel control */
75 #define VIA_REG_CTRL_START 0x80 /* WO */
76 #define VIA_REG_CTRL_TERMINATE 0x40 /* WO */
77 #define VIA_REG_CTRL_AUTOSTART 0x20
78 #define VIA_REG_CTRL_PAUSE 0x08 /* RW */
79 #define VIA_REG_CTRL_INT_STOP 0x04
80 #define VIA_REG_CTRL_INT_EOL 0x02
81 #define VIA_REG_CTRL_INT_FLAG 0x01
82 #define VIA_REG_CTRL_RESET 0x01 /* RW - probably reset? undocumented */
83 #define VIA_REG_CTRL_INT (VIA_REG_CTRL_INT_FLAG | VIA_REG_CTRL_INT_EOL | VIA_REG_CTRL_AUTOSTART)
84 #define VIA_REG_OFFSET_TYPE 0x02 /* byte - channel type (686 only) */
85 #define VIA_REG_TYPE_AUTOSTART 0x80 /* RW - autostart at EOL */
86 #define VIA_REG_TYPE_16BIT 0x20 /* RW */
87 #define VIA_REG_TYPE_STEREO 0x10 /* RW */
88 #define VIA_REG_TYPE_INT_LLINE 0x00
89 #define VIA_REG_TYPE_INT_LSAMPLE 0x04
90 #define VIA_REG_TYPE_INT_LESSONE 0x08
91 #define VIA_REG_TYPE_INT_MASK 0x0c
92 #define VIA_REG_TYPE_INT_EOL 0x02
93 #define VIA_REG_TYPE_INT_FLAG 0x01
94 #define VIA_REG_OFFSET_TABLE_PTR 0x04 /* dword - channel table pointer */
95 #define VIA_REG_OFFSET_CURR_PTR 0x04 /* dword - channel current pointer */
96 #define VIA_REG_OFFSET_STOP_IDX 0x08 /* dword - stop index, channel type, sample rate */
97 #define VIA_REG_OFFSET_CURR_COUNT 0x0c /* dword - channel current count (24 bit) */
98 #define VIA_REG_OFFSET_CURR_INDEX 0x0f /* byte - channel current index (for via8233 only) */
99
100 #define DEFINE_VIA_REGSET(name,val) \
101 enum {\
102 VIA_REG_##name##_STATUS = (val),\
103 VIA_REG_##name##_CONTROL = (val) + 0x01,\
104 VIA_REG_##name##_TYPE = (val) + 0x02,\
105 VIA_REG_##name##_TABLE_PTR = (val) + 0x04,\
106 VIA_REG_##name##_CURR_PTR = (val) + 0x04,\
107 VIA_REG_##name##_STOP_IDX = (val) + 0x08,\
108 VIA_REG_##name##_CURR_COUNT = (val) + 0x0c,\
109 }
110
111 /* modem block */
112 DEFINE_VIA_REGSET(MO, 0x40);
113 DEFINE_VIA_REGSET(MI, 0x50);
114
115 /* AC'97 */
116 #define VIA_REG_AC97 0x80 /* dword */
117 #define VIA_REG_AC97_CODEC_ID_MASK (3<<30)
118 #define VIA_REG_AC97_CODEC_ID_SHIFT 30
119 #define VIA_REG_AC97_CODEC_ID_PRIMARY 0x00
120 #define VIA_REG_AC97_CODEC_ID_SECONDARY 0x01
121 #define VIA_REG_AC97_SECONDARY_VALID (1<<27)
122 #define VIA_REG_AC97_PRIMARY_VALID (1<<25)
123 #define VIA_REG_AC97_BUSY (1<<24)
124 #define VIA_REG_AC97_READ (1<<23)
125 #define VIA_REG_AC97_CMD_SHIFT 16
126 #define VIA_REG_AC97_CMD_MASK 0x7e
127 #define VIA_REG_AC97_DATA_SHIFT 0
128 #define VIA_REG_AC97_DATA_MASK 0xffff
129
130 #define VIA_REG_SGD_SHADOW 0x84 /* dword */
131 #define VIA_REG_SGD_STAT_PB_FLAG (1<<0)
132 #define VIA_REG_SGD_STAT_CP_FLAG (1<<1)
133 #define VIA_REG_SGD_STAT_FM_FLAG (1<<2)
134 #define VIA_REG_SGD_STAT_PB_EOL (1<<4)
135 #define VIA_REG_SGD_STAT_CP_EOL (1<<5)
136 #define VIA_REG_SGD_STAT_FM_EOL (1<<6)
137 #define VIA_REG_SGD_STAT_PB_STOP (1<<8)
138 #define VIA_REG_SGD_STAT_CP_STOP (1<<9)
139 #define VIA_REG_SGD_STAT_FM_STOP (1<<10)
140 #define VIA_REG_SGD_STAT_PB_ACTIVE (1<<12)
141 #define VIA_REG_SGD_STAT_CP_ACTIVE (1<<13)
142 #define VIA_REG_SGD_STAT_FM_ACTIVE (1<<14)
143 #define VIA_REG_SGD_STAT_MR_FLAG (1<<16)
144 #define VIA_REG_SGD_STAT_MW_FLAG (1<<17)
145 #define VIA_REG_SGD_STAT_MR_EOL (1<<20)
146 #define VIA_REG_SGD_STAT_MW_EOL (1<<21)
147 #define VIA_REG_SGD_STAT_MR_STOP (1<<24)
148 #define VIA_REG_SGD_STAT_MW_STOP (1<<25)
149 #define VIA_REG_SGD_STAT_MR_ACTIVE (1<<28)
150 #define VIA_REG_SGD_STAT_MW_ACTIVE (1<<29)
151
152 #define VIA_REG_GPI_STATUS 0x88
153 #define VIA_REG_GPI_INTR 0x8c
154
155 #define VIA_TBL_BIT_FLAG 0x40000000
156 #define VIA_TBL_BIT_EOL 0x80000000
157
158 /* pci space */
159 #define VIA_ACLINK_STAT 0x40
160 #define VIA_ACLINK_C11_READY 0x20
161 #define VIA_ACLINK_C10_READY 0x10
162 #define VIA_ACLINK_C01_READY 0x04 /* secondary codec ready */
163 #define VIA_ACLINK_LOWPOWER 0x02 /* low-power state */
164 #define VIA_ACLINK_C00_READY 0x01 /* primary codec ready */
165 #define VIA_ACLINK_CTRL 0x41
166 #define VIA_ACLINK_CTRL_ENABLE 0x80 /* 0: disable, 1: enable */
167 #define VIA_ACLINK_CTRL_RESET 0x40 /* 0: assert, 1: de-assert */
168 #define VIA_ACLINK_CTRL_SYNC 0x20 /* 0: release SYNC, 1: force SYNC hi */
169 #define VIA_ACLINK_CTRL_SDO 0x10 /* 0: release SDO, 1: force SDO hi */
170 #define VIA_ACLINK_CTRL_VRA 0x08 /* 0: disable VRA, 1: enable VRA */
171 #define VIA_ACLINK_CTRL_PCM 0x04 /* 0: disable PCM, 1: enable PCM */
172 #define VIA_ACLINK_CTRL_FM 0x02 /* via686 only */
173 #define VIA_ACLINK_CTRL_SB 0x01 /* via686 only */
174 #define VIA_ACLINK_CTRL_INIT (VIA_ACLINK_CTRL_ENABLE|\
175 VIA_ACLINK_CTRL_RESET|\
176 VIA_ACLINK_CTRL_PCM)
177 #define VIA_FUNC_ENABLE 0x42
178 #define VIA_FUNC_MIDI_PNP 0x80 /* FIXME: it's 0x40 in the datasheet! */
179 #define VIA_FUNC_MIDI_IRQMASK 0x40 /* FIXME: not documented! */
180 #define VIA_FUNC_RX2C_WRITE 0x20
181 #define VIA_FUNC_SB_FIFO_EMPTY 0x10
182 #define VIA_FUNC_ENABLE_GAME 0x08
183 #define VIA_FUNC_ENABLE_FM 0x04
184 #define VIA_FUNC_ENABLE_MIDI 0x02
185 #define VIA_FUNC_ENABLE_SB 0x01
186 #define VIA_PNP_CONTROL 0x43
187 #define VIA_MC97_CTRL 0x44
188 #define VIA_MC97_CTRL_ENABLE 0x80
189 #define VIA_MC97_CTRL_SECONDARY 0x40
190 #define VIA_MC97_CTRL_INIT (VIA_MC97_CTRL_ENABLE|\
191 VIA_MC97_CTRL_SECONDARY)
192
193
194 /*
195 * pcm stream
196 */
197
198 struct snd_via_sg_table {
199 unsigned int offset;
200 unsigned int size;
201 } ;
202
203 #define VIA_TABLE_SIZE 255
204
205 struct viadev {
206 unsigned int reg_offset;
207 unsigned long port;
208 int direction; /* playback = 0, capture = 1 */
209 struct snd_pcm_substream *substream;
210 int running;
211 unsigned int tbl_entries; /* # descriptors */
212 struct snd_dma_buffer table;
213 struct snd_via_sg_table *idx_table;
214 /* for recovery from the unexpected pointer */
215 unsigned int lastpos;
216 unsigned int bufsize;
217 unsigned int bufsize2;
218 };
219
220 enum { TYPE_CARD_VIA82XX_MODEM = 1 };
221
222 #define VIA_MAX_MODEM_DEVS 2
223
224 struct via82xx_modem {
225 int irq;
226
227 unsigned long port;
228
229 unsigned int intr_mask; /* SGD_SHADOW mask to check interrupts */
230
231 struct pci_dev *pci;
232 struct snd_card *card;
233
234 unsigned int num_devs;
235 unsigned int playback_devno, capture_devno;
236 struct viadev devs[VIA_MAX_MODEM_DEVS];
237
238 struct snd_pcm *pcms[2];
239
240 struct snd_ac97_bus *ac97_bus;
241 struct snd_ac97 *ac97;
242 unsigned int ac97_clock;
243 unsigned int ac97_secondary; /* secondary AC'97 codec is present */
244
245 spinlock_t reg_lock;
246 struct snd_info_entry *proc_entry;
247 };
248
249 static const struct pci_device_id snd_via82xx_modem_ids[] = {
250 { PCI_VDEVICE(VIA, 0x3068), TYPE_CARD_VIA82XX_MODEM, },
251 { 0, }
252 };
253
254 MODULE_DEVICE_TABLE(pci, snd_via82xx_modem_ids);
255
256 /*
257 */
258
259 /*
260 * allocate and initialize the descriptor buffers
261 * periods = number of periods
262 * fragsize = period size in bytes
263 */
264 static int build_via_table(struct viadev *dev, struct snd_pcm_substream *substream,
265 struct pci_dev *pci,
266 unsigned int periods, unsigned int fragsize)
267 {
268 unsigned int i, idx, ofs, rest;
269 struct via82xx_modem *chip = snd_pcm_substream_chip(substream);
270
271 if (dev->table.area == NULL) {
272 /* the start of each lists must be aligned to 8 bytes,
273 * but the kernel pages are much bigger, so we don't care
274 */
275 if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(chip->pci),
276 PAGE_ALIGN(VIA_TABLE_SIZE * 2 * 8),
277 &dev->table) < 0)
278 return -ENOMEM;
279 }
280 if (! dev->idx_table) {
281 dev->idx_table = kmalloc_array(VIA_TABLE_SIZE,
282 sizeof(*dev->idx_table),
283 GFP_KERNEL);
284 if (! dev->idx_table)
285 return -ENOMEM;
286 }
287
288 /* fill the entries */
289 idx = 0;
290 ofs = 0;
291 for (i = 0; i < periods; i++) {
292 rest = fragsize;
293 /* fill descriptors for a period.
294 * a period can be split to several descriptors if it's
295 * over page boundary.
296 */
297 do {
298 unsigned int r;
299 unsigned int flag;
300 unsigned int addr;
301
302 if (idx >= VIA_TABLE_SIZE) {
303 dev_err(&pci->dev, "too much table size!\n");
304 return -EINVAL;
305 }
306 addr = snd_pcm_sgbuf_get_addr(substream, ofs);
307 ((u32 *)dev->table.area)[idx << 1] = cpu_to_le32(addr);
308 r = PAGE_SIZE - (ofs % PAGE_SIZE);
309 if (rest < r)
310 r = rest;
311 rest -= r;
312 if (! rest) {
313 if (i == periods - 1)
314 flag = VIA_TBL_BIT_EOL; /* buffer boundary */
315 else
316 flag = VIA_TBL_BIT_FLAG; /* period boundary */
317 } else
318 flag = 0; /* period continues to the next */
319 /*
320 dev_dbg(&pci->dev,
321 "tbl %d: at %d size %d (rest %d)\n",
322 idx, ofs, r, rest);
323 */
324 ((u32 *)dev->table.area)[(idx<<1) + 1] = cpu_to_le32(r | flag);
325 dev->idx_table[idx].offset = ofs;
326 dev->idx_table[idx].size = r;
327 ofs += r;
328 idx++;
329 } while (rest > 0);
330 }
331 dev->tbl_entries = idx;
332 dev->bufsize = periods * fragsize;
333 dev->bufsize2 = dev->bufsize / 2;
334 return 0;
335 }
336
337
338 static int clean_via_table(struct viadev *dev, struct snd_pcm_substream *substream,
339 struct pci_dev *pci)
340 {
341 if (dev->table.area) {
342 snd_dma_free_pages(&dev->table);
343 dev->table.area = NULL;
344 }
345 kfree(dev->idx_table);
346 dev->idx_table = NULL;
347 return 0;
348 }
349
350 /*
351 * Basic I/O
352 */
353
354 static inline unsigned int snd_via82xx_codec_xread(struct via82xx_modem *chip)
355 {
356 return inl(VIAREG(chip, AC97));
357 }
358
359 static inline void snd_via82xx_codec_xwrite(struct via82xx_modem *chip, unsigned int val)
360 {
361 outl(val, VIAREG(chip, AC97));
362 }
363
364 static int snd_via82xx_codec_ready(struct via82xx_modem *chip, int secondary)
365 {
366 unsigned int timeout = 1000; /* 1ms */
367 unsigned int val;
368
369 while (timeout-- > 0) {
370 udelay(1);
371 if (!((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY))
372 return val & 0xffff;
373 }
374 dev_err(chip->card->dev, "codec_ready: codec %i is not ready [0x%x]\n",
375 secondary, snd_via82xx_codec_xread(chip));
376 return -EIO;
377 }
378
379 static int snd_via82xx_codec_valid(struct via82xx_modem *chip, int secondary)
380 {
381 unsigned int timeout = 1000; /* 1ms */
382 unsigned int val, val1;
383 unsigned int stat = !secondary ? VIA_REG_AC97_PRIMARY_VALID :
384 VIA_REG_AC97_SECONDARY_VALID;
385
386 while (timeout-- > 0) {
387 val = snd_via82xx_codec_xread(chip);
388 val1 = val & (VIA_REG_AC97_BUSY | stat);
389 if (val1 == stat)
390 return val & 0xffff;
391 udelay(1);
392 }
393 return -EIO;
394 }
395
396 static void snd_via82xx_codec_wait(struct snd_ac97 *ac97)
397 {
398 struct via82xx_modem *chip = ac97->private_data;
399 int err;
400 err = snd_via82xx_codec_ready(chip, ac97->num);
401 /* here we need to wait fairly for long time.. */
402 msleep(500);
403 }
404
405 static void snd_via82xx_codec_write(struct snd_ac97 *ac97,
406 unsigned short reg,
407 unsigned short val)
408 {
409 struct via82xx_modem *chip = ac97->private_data;
410 unsigned int xval;
411 if(reg == AC97_GPIO_STATUS) {
412 outl(val, VIAREG(chip, GPI_STATUS));
413 return;
414 }
415 xval = !ac97->num ? VIA_REG_AC97_CODEC_ID_PRIMARY : VIA_REG_AC97_CODEC_ID_SECONDARY;
416 xval <<= VIA_REG_AC97_CODEC_ID_SHIFT;
417 xval |= reg << VIA_REG_AC97_CMD_SHIFT;
418 xval |= val << VIA_REG_AC97_DATA_SHIFT;
419 snd_via82xx_codec_xwrite(chip, xval);
420 snd_via82xx_codec_ready(chip, ac97->num);
421 }
422
423 static unsigned short snd_via82xx_codec_read(struct snd_ac97 *ac97, unsigned short reg)
424 {
425 struct via82xx_modem *chip = ac97->private_data;
426 unsigned int xval, val = 0xffff;
427 int again = 0;
428
429 xval = ac97->num << VIA_REG_AC97_CODEC_ID_SHIFT;
430 xval |= ac97->num ? VIA_REG_AC97_SECONDARY_VALID : VIA_REG_AC97_PRIMARY_VALID;
431 xval |= VIA_REG_AC97_READ;
432 xval |= (reg & 0x7f) << VIA_REG_AC97_CMD_SHIFT;
433 while (1) {
434 if (again++ > 3) {
435 dev_err(chip->card->dev,
436 "codec_read: codec %i is not valid [0x%x]\n",
437 ac97->num, snd_via82xx_codec_xread(chip));
438 return 0xffff;
439 }
440 snd_via82xx_codec_xwrite(chip, xval);
441 udelay (20);
442 if (snd_via82xx_codec_valid(chip, ac97->num) >= 0) {
443 udelay(25);
444 val = snd_via82xx_codec_xread(chip);
445 break;
446 }
447 }
448 return val & 0xffff;
449 }
450
451 static void snd_via82xx_channel_reset(struct via82xx_modem *chip, struct viadev *viadev)
452 {
453 outb(VIA_REG_CTRL_PAUSE | VIA_REG_CTRL_TERMINATE | VIA_REG_CTRL_RESET,
454 VIADEV_REG(viadev, OFFSET_CONTROL));
455 inb(VIADEV_REG(viadev, OFFSET_CONTROL));
456 udelay(50);
457 /* disable interrupts */
458 outb(0x00, VIADEV_REG(viadev, OFFSET_CONTROL));
459 /* clear interrupts */
460 outb(0x03, VIADEV_REG(viadev, OFFSET_STATUS));
461 outb(0x00, VIADEV_REG(viadev, OFFSET_TYPE)); /* for via686 */
462 // outl(0, VIADEV_REG(viadev, OFFSET_CURR_PTR));
463 viadev->lastpos = 0;
464 }
465
466
467 /*
468 * Interrupt handler
469 */
470
471 static irqreturn_t snd_via82xx_interrupt(int irq, void *dev_id)
472 {
473 struct via82xx_modem *chip = dev_id;
474 unsigned int status;
475 unsigned int i;
476
477 status = inl(VIAREG(chip, SGD_SHADOW));
478 if (! (status & chip->intr_mask)) {
479 return IRQ_NONE;
480 }
481 // _skip_sgd:
482
483 /* check status for each stream */
484 spin_lock(&chip->reg_lock);
485 for (i = 0; i < chip->num_devs; i++) {
486 struct viadev *viadev = &chip->devs[i];
487 unsigned char c_status = inb(VIADEV_REG(viadev, OFFSET_STATUS));
488 c_status &= (VIA_REG_STAT_EOL|VIA_REG_STAT_FLAG|VIA_REG_STAT_STOPPED);
489 if (! c_status)
490 continue;
491 if (viadev->substream && viadev->running) {
492 spin_unlock(&chip->reg_lock);
493 snd_pcm_period_elapsed(viadev->substream);
494 spin_lock(&chip->reg_lock);
495 }
496 outb(c_status, VIADEV_REG(viadev, OFFSET_STATUS)); /* ack */
497 }
498 spin_unlock(&chip->reg_lock);
499 return IRQ_HANDLED;
500 }
501
502 /*
503 * PCM callbacks
504 */
505
506 /*
507 * trigger callback
508 */
509 static int snd_via82xx_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
510 {
511 struct via82xx_modem *chip = snd_pcm_substream_chip(substream);
512 struct viadev *viadev = substream->runtime->private_data;
513 unsigned char val = 0;
514
515 switch (cmd) {
516 case SNDRV_PCM_TRIGGER_START:
517 case SNDRV_PCM_TRIGGER_SUSPEND:
518 val |= VIA_REG_CTRL_START;
519 viadev->running = 1;
520 break;
521 case SNDRV_PCM_TRIGGER_STOP:
522 val = VIA_REG_CTRL_TERMINATE;
523 viadev->running = 0;
524 break;
525 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
526 val |= VIA_REG_CTRL_PAUSE;
527 viadev->running = 0;
528 break;
529 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
530 viadev->running = 1;
531 break;
532 default:
533 return -EINVAL;
534 }
535 outb(val, VIADEV_REG(viadev, OFFSET_CONTROL));
536 if (cmd == SNDRV_PCM_TRIGGER_STOP)
537 snd_via82xx_channel_reset(chip, viadev);
538 return 0;
539 }
540
541 /*
542 * pointer callbacks
543 */
544
545 /*
546 * calculate the linear position at the given sg-buffer index and the rest count
547 */
548
549 #define check_invalid_pos(viadev,pos) \
550 ((pos) < viadev->lastpos && ((pos) >= viadev->bufsize2 ||\
551 viadev->lastpos < viadev->bufsize2))
552
553 static inline unsigned int calc_linear_pos(struct via82xx_modem *chip,
554 struct viadev *viadev,
555 unsigned int idx,
556 unsigned int count)
557 {
558 unsigned int size, res;
559
560 size = viadev->idx_table[idx].size;
561 res = viadev->idx_table[idx].offset + size - count;
562
563 /* check the validity of the calculated position */
564 if (size < count) {
565 dev_err(chip->card->dev,
566 "invalid via82xx_cur_ptr (size = %d, count = %d)\n",
567 (int)size, (int)count);
568 res = viadev->lastpos;
569 } else if (check_invalid_pos(viadev, res)) {
570 #ifdef POINTER_DEBUG
571 dev_dbg(chip->card->dev,
572 "fail: idx = %i/%i, lastpos = 0x%x, bufsize2 = 0x%x, offsize = 0x%x, size = 0x%x, count = 0x%x\n",
573 idx, viadev->tbl_entries, viadev->lastpos,
574 viadev->bufsize2, viadev->idx_table[idx].offset,
575 viadev->idx_table[idx].size, count);
576 #endif
577 if (count && size < count) {
578 dev_dbg(chip->card->dev,
579 "invalid via82xx_cur_ptr, using last valid pointer\n");
580 res = viadev->lastpos;
581 } else {
582 if (! count)
583 /* bogus count 0 on the DMA boundary? */
584 res = viadev->idx_table[idx].offset;
585 else
586 /* count register returns full size
587 * when end of buffer is reached
588 */
589 res = viadev->idx_table[idx].offset + size;
590 if (check_invalid_pos(viadev, res)) {
591 dev_dbg(chip->card->dev,
592 "invalid via82xx_cur_ptr (2), using last valid pointer\n");
593 res = viadev->lastpos;
594 }
595 }
596 }
597 viadev->lastpos = res; /* remember the last position */
598 if (res >= viadev->bufsize)
599 res -= viadev->bufsize;
600 return res;
601 }
602
603 /*
604 * get the current pointer on via686
605 */
606 static snd_pcm_uframes_t snd_via686_pcm_pointer(struct snd_pcm_substream *substream)
607 {
608 struct via82xx_modem *chip = snd_pcm_substream_chip(substream);
609 struct viadev *viadev = substream->runtime->private_data;
610 unsigned int idx, ptr, count, res;
611
612 if (snd_BUG_ON(!viadev->tbl_entries))
613 return 0;
614 if (!(inb(VIADEV_REG(viadev, OFFSET_STATUS)) & VIA_REG_STAT_ACTIVE))
615 return 0;
616
617 spin_lock(&chip->reg_lock);
618 count = inl(VIADEV_REG(viadev, OFFSET_CURR_COUNT)) & 0xffffff;
619 /* The via686a does not have the current index register,
620 * so we need to calculate the index from CURR_PTR.
621 */
622 ptr = inl(VIADEV_REG(viadev, OFFSET_CURR_PTR));
623 if (ptr <= (unsigned int)viadev->table.addr)
624 idx = 0;
625 else /* CURR_PTR holds the address + 8 */
626 idx = ((ptr - (unsigned int)viadev->table.addr) / 8 - 1) %
627 viadev->tbl_entries;
628 res = calc_linear_pos(chip, viadev, idx, count);
629 spin_unlock(&chip->reg_lock);
630
631 return bytes_to_frames(substream->runtime, res);
632 }
633
634 /*
635 * hw_params callback:
636 * allocate the buffer and build up the buffer description table
637 */
638 static int snd_via82xx_hw_params(struct snd_pcm_substream *substream,
639 struct snd_pcm_hw_params *hw_params)
640 {
641 struct via82xx_modem *chip = snd_pcm_substream_chip(substream);
642 struct viadev *viadev = substream->runtime->private_data;
643 int err;
644
645 err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
646 if (err < 0)
647 return err;
648 err = build_via_table(viadev, substream, chip->pci,
649 params_periods(hw_params),
650 params_period_bytes(hw_params));
651 if (err < 0)
652 return err;
653
654 snd_ac97_write(chip->ac97, AC97_LINE1_RATE, params_rate(hw_params));
655 snd_ac97_write(chip->ac97, AC97_LINE1_LEVEL, 0);
656
657 return 0;
658 }
659
660 /*
661 * hw_free callback:
662 * clean up the buffer description table and release the buffer
663 */
664 static int snd_via82xx_hw_free(struct snd_pcm_substream *substream)
665 {
666 struct via82xx_modem *chip = snd_pcm_substream_chip(substream);
667 struct viadev *viadev = substream->runtime->private_data;
668
669 clean_via_table(viadev, substream, chip->pci);
670 snd_pcm_lib_free_pages(substream);
671 return 0;
672 }
673
674
675 /*
676 * set up the table pointer
677 */
678 static void snd_via82xx_set_table_ptr(struct via82xx_modem *chip, struct viadev *viadev)
679 {
680 snd_via82xx_codec_ready(chip, chip->ac97_secondary);
681 outl((u32)viadev->table.addr, VIADEV_REG(viadev, OFFSET_TABLE_PTR));
682 udelay(20);
683 snd_via82xx_codec_ready(chip, chip->ac97_secondary);
684 }
685
686 /*
687 * prepare callback for playback and capture
688 */
689 static int snd_via82xx_pcm_prepare(struct snd_pcm_substream *substream)
690 {
691 struct via82xx_modem *chip = snd_pcm_substream_chip(substream);
692 struct viadev *viadev = substream->runtime->private_data;
693
694 snd_via82xx_channel_reset(chip, viadev);
695 /* this must be set after channel_reset */
696 snd_via82xx_set_table_ptr(chip, viadev);
697 outb(VIA_REG_TYPE_AUTOSTART|VIA_REG_TYPE_INT_EOL|VIA_REG_TYPE_INT_FLAG,
698 VIADEV_REG(viadev, OFFSET_TYPE));
699 return 0;
700 }
701
702 /*
703 * pcm hardware definition, identical for both playback and capture
704 */
705 static const struct snd_pcm_hardware snd_via82xx_hw =
706 {
707 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
708 SNDRV_PCM_INFO_BLOCK_TRANSFER |
709 SNDRV_PCM_INFO_MMAP_VALID |
710 /* SNDRV_PCM_INFO_RESUME | */
711 SNDRV_PCM_INFO_PAUSE),
712 .formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE,
713 .rates = SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_KNOT,
714 .rate_min = 8000,
715 .rate_max = 16000,
716 .channels_min = 1,
717 .channels_max = 1,
718 .buffer_bytes_max = 128 * 1024,
719 .period_bytes_min = 32,
720 .period_bytes_max = 128 * 1024,
721 .periods_min = 2,
722 .periods_max = VIA_TABLE_SIZE / 2,
723 .fifo_size = 0,
724 };
725
726
727 /*
728 * open callback skeleton
729 */
730 static int snd_via82xx_modem_pcm_open(struct via82xx_modem *chip, struct viadev *viadev,
731 struct snd_pcm_substream *substream)
732 {
733 struct snd_pcm_runtime *runtime = substream->runtime;
734 int err;
735 static const unsigned int rates[] = { 8000, 9600, 12000, 16000 };
736 static const struct snd_pcm_hw_constraint_list hw_constraints_rates = {
737 .count = ARRAY_SIZE(rates),
738 .list = rates,
739 .mask = 0,
740 };
741
742 runtime->hw = snd_via82xx_hw;
743
744 if ((err = snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
745 &hw_constraints_rates)) < 0)
746 return err;
747
748 /* we may remove following constaint when we modify table entries
749 in interrupt */
750 if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
751 return err;
752
753 runtime->private_data = viadev;
754 viadev->substream = substream;
755
756 return 0;
757 }
758
759
760 /*
761 * open callback for playback
762 */
763 static int snd_via82xx_playback_open(struct snd_pcm_substream *substream)
764 {
765 struct via82xx_modem *chip = snd_pcm_substream_chip(substream);
766 struct viadev *viadev = &chip->devs[chip->playback_devno + substream->number];
767
768 return snd_via82xx_modem_pcm_open(chip, viadev, substream);
769 }
770
771 /*
772 * open callback for capture
773 */
774 static int snd_via82xx_capture_open(struct snd_pcm_substream *substream)
775 {
776 struct via82xx_modem *chip = snd_pcm_substream_chip(substream);
777 struct viadev *viadev = &chip->devs[chip->capture_devno + substream->pcm->device];
778
779 return snd_via82xx_modem_pcm_open(chip, viadev, substream);
780 }
781
782 /*
783 * close callback
784 */
785 static int snd_via82xx_pcm_close(struct snd_pcm_substream *substream)
786 {
787 struct viadev *viadev = substream->runtime->private_data;
788
789 viadev->substream = NULL;
790 return 0;
791 }
792
793
794 /* via686 playback callbacks */
795 static const struct snd_pcm_ops snd_via686_playback_ops = {
796 .open = snd_via82xx_playback_open,
797 .close = snd_via82xx_pcm_close,
798 .ioctl = snd_pcm_lib_ioctl,
799 .hw_params = snd_via82xx_hw_params,
800 .hw_free = snd_via82xx_hw_free,
801 .prepare = snd_via82xx_pcm_prepare,
802 .trigger = snd_via82xx_pcm_trigger,
803 .pointer = snd_via686_pcm_pointer,
804 .page = snd_pcm_sgbuf_ops_page,
805 };
806
807 /* via686 capture callbacks */
808 static const struct snd_pcm_ops snd_via686_capture_ops = {
809 .open = snd_via82xx_capture_open,
810 .close = snd_via82xx_pcm_close,
811 .ioctl = snd_pcm_lib_ioctl,
812 .hw_params = snd_via82xx_hw_params,
813 .hw_free = snd_via82xx_hw_free,
814 .prepare = snd_via82xx_pcm_prepare,
815 .trigger = snd_via82xx_pcm_trigger,
816 .pointer = snd_via686_pcm_pointer,
817 .page = snd_pcm_sgbuf_ops_page,
818 };
819
820
821 static void init_viadev(struct via82xx_modem *chip, int idx, unsigned int reg_offset,
822 int direction)
823 {
824 chip->devs[idx].reg_offset = reg_offset;
825 chip->devs[idx].direction = direction;
826 chip->devs[idx].port = chip->port + reg_offset;
827 }
828
829 /*
830 * create a pcm instance for via686a/b
831 */
832 static int snd_via686_pcm_new(struct via82xx_modem *chip)
833 {
834 struct snd_pcm *pcm;
835 int err;
836
837 chip->playback_devno = 0;
838 chip->capture_devno = 1;
839 chip->num_devs = 2;
840 chip->intr_mask = 0x330000; /* FLAGS | EOL for MR, MW */
841
842 err = snd_pcm_new(chip->card, chip->card->shortname, 0, 1, 1, &pcm);
843 if (err < 0)
844 return err;
845 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via686_playback_ops);
846 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via686_capture_ops);
847 pcm->dev_class = SNDRV_PCM_CLASS_MODEM;
848 pcm->private_data = chip;
849 strcpy(pcm->name, chip->card->shortname);
850 chip->pcms[0] = pcm;
851 init_viadev(chip, 0, VIA_REG_MO_STATUS, 0);
852 init_viadev(chip, 1, VIA_REG_MI_STATUS, 1);
853
854 snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
855 snd_dma_pci_data(chip->pci),
856 64*1024, 128*1024);
857 return 0;
858 }
859
860
861 /*
862 * Mixer part
863 */
864
865
866 static void snd_via82xx_mixer_free_ac97_bus(struct snd_ac97_bus *bus)
867 {
868 struct via82xx_modem *chip = bus->private_data;
869 chip->ac97_bus = NULL;
870 }
871
872 static void snd_via82xx_mixer_free_ac97(struct snd_ac97 *ac97)
873 {
874 struct via82xx_modem *chip = ac97->private_data;
875 chip->ac97 = NULL;
876 }
877
878
879 static int snd_via82xx_mixer_new(struct via82xx_modem *chip)
880 {
881 struct snd_ac97_template ac97;
882 int err;
883 static struct snd_ac97_bus_ops ops = {
884 .write = snd_via82xx_codec_write,
885 .read = snd_via82xx_codec_read,
886 .wait = snd_via82xx_codec_wait,
887 };
888
889 if ((err = snd_ac97_bus(chip->card, 0, &ops, chip, &chip->ac97_bus)) < 0)
890 return err;
891 chip->ac97_bus->private_free = snd_via82xx_mixer_free_ac97_bus;
892 chip->ac97_bus->clock = chip->ac97_clock;
893
894 memset(&ac97, 0, sizeof(ac97));
895 ac97.private_data = chip;
896 ac97.private_free = snd_via82xx_mixer_free_ac97;
897 ac97.pci = chip->pci;
898 ac97.scaps = AC97_SCAP_SKIP_AUDIO | AC97_SCAP_POWER_SAVE;
899 ac97.num = chip->ac97_secondary;
900
901 if ((err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97)) < 0)
902 return err;
903
904 return 0;
905 }
906
907
908 /*
909 * proc interface
910 */
911 static void snd_via82xx_proc_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer)
912 {
913 struct via82xx_modem *chip = entry->private_data;
914 int i;
915
916 snd_iprintf(buffer, "%s\n\n", chip->card->longname);
917 for (i = 0; i < 0xa0; i += 4) {
918 snd_iprintf(buffer, "%02x: %08x\n", i, inl(chip->port + i));
919 }
920 }
921
922 static void snd_via82xx_proc_init(struct via82xx_modem *chip)
923 {
924 snd_card_ro_proc_new(chip->card, "via82xx", chip,
925 snd_via82xx_proc_read);
926 }
927
928 /*
929 *
930 */
931
932 static int snd_via82xx_chip_init(struct via82xx_modem *chip)
933 {
934 unsigned int val;
935 unsigned long end_time;
936 unsigned char pval;
937
938 pci_read_config_byte(chip->pci, VIA_MC97_CTRL, &pval);
939 if((pval & VIA_MC97_CTRL_INIT) != VIA_MC97_CTRL_INIT) {
940 pci_write_config_byte(chip->pci, 0x44, pval|VIA_MC97_CTRL_INIT);
941 udelay(100);
942 }
943
944 pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval);
945 if (! (pval & VIA_ACLINK_C00_READY)) { /* codec not ready? */
946 /* deassert ACLink reset, force SYNC */
947 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL,
948 VIA_ACLINK_CTRL_ENABLE |
949 VIA_ACLINK_CTRL_RESET |
950 VIA_ACLINK_CTRL_SYNC);
951 udelay(100);
952 #if 1 /* FIXME: should we do full reset here for all chip models? */
953 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, 0x00);
954 udelay(100);
955 #else
956 /* deassert ACLink reset, force SYNC (warm AC'97 reset) */
957 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL,
958 VIA_ACLINK_CTRL_RESET|VIA_ACLINK_CTRL_SYNC);
959 udelay(2);
960 #endif
961 /* ACLink on, deassert ACLink reset, VSR, SGD data out */
962 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT);
963 udelay(100);
964 }
965
966 pci_read_config_byte(chip->pci, VIA_ACLINK_CTRL, &pval);
967 if ((pval & VIA_ACLINK_CTRL_INIT) != VIA_ACLINK_CTRL_INIT) {
968 /* ACLink on, deassert ACLink reset, VSR, SGD data out */
969 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT);
970 udelay(100);
971 }
972
973 /* wait until codec ready */
974 end_time = jiffies + msecs_to_jiffies(750);
975 do {
976 pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval);
977 if (pval & VIA_ACLINK_C00_READY) /* primary codec ready */
978 break;
979 schedule_timeout_uninterruptible(1);
980 } while (time_before(jiffies, end_time));
981
982 if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY)
983 dev_err(chip->card->dev,
984 "AC'97 codec is not ready [0x%x]\n", val);
985
986 snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ |
987 VIA_REG_AC97_SECONDARY_VALID |
988 (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT));
989 end_time = jiffies + msecs_to_jiffies(750);
990 snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ |
991 VIA_REG_AC97_SECONDARY_VALID |
992 (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT));
993 do {
994 if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_SECONDARY_VALID) {
995 chip->ac97_secondary = 1;
996 goto __ac97_ok2;
997 }
998 schedule_timeout_uninterruptible(1);
999 } while (time_before(jiffies, end_time));
1000 /* This is ok, the most of motherboards have only one codec */
1001
1002 __ac97_ok2:
1003
1004 /* route FM trap to IRQ, disable FM trap */
1005 // pci_write_config_byte(chip->pci, VIA_FM_NMI_CTRL, 0);
1006 /* disable all GPI interrupts */
1007 outl(0, VIAREG(chip, GPI_INTR));
1008
1009 return 0;
1010 }
1011
1012 #ifdef CONFIG_PM_SLEEP
1013 /*
1014 * power management
1015 */
1016 static int snd_via82xx_suspend(struct device *dev)
1017 {
1018 struct snd_card *card = dev_get_drvdata(dev);
1019 struct via82xx_modem *chip = card->private_data;
1020 int i;
1021
1022 snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
1023 for (i = 0; i < chip->num_devs; i++)
1024 snd_via82xx_channel_reset(chip, &chip->devs[i]);
1025 synchronize_irq(chip->irq);
1026 snd_ac97_suspend(chip->ac97);
1027 return 0;
1028 }
1029
1030 static int snd_via82xx_resume(struct device *dev)
1031 {
1032 struct snd_card *card = dev_get_drvdata(dev);
1033 struct via82xx_modem *chip = card->private_data;
1034 int i;
1035
1036 snd_via82xx_chip_init(chip);
1037
1038 snd_ac97_resume(chip->ac97);
1039
1040 for (i = 0; i < chip->num_devs; i++)
1041 snd_via82xx_channel_reset(chip, &chip->devs[i]);
1042
1043 snd_power_change_state(card, SNDRV_CTL_POWER_D0);
1044 return 0;
1045 }
1046
1047 static SIMPLE_DEV_PM_OPS(snd_via82xx_pm, snd_via82xx_suspend, snd_via82xx_resume);
1048 #define SND_VIA82XX_PM_OPS &snd_via82xx_pm
1049 #else
1050 #define SND_VIA82XX_PM_OPS NULL
1051 #endif /* CONFIG_PM_SLEEP */
1052
1053 static int snd_via82xx_free(struct via82xx_modem *chip)
1054 {
1055 unsigned int i;
1056
1057 if (chip->irq < 0)
1058 goto __end_hw;
1059 /* disable interrupts */
1060 for (i = 0; i < chip->num_devs; i++)
1061 snd_via82xx_channel_reset(chip, &chip->devs[i]);
1062
1063 __end_hw:
1064 if (chip->irq >= 0)
1065 free_irq(chip->irq, chip);
1066 pci_release_regions(chip->pci);
1067 pci_disable_device(chip->pci);
1068 kfree(chip);
1069 return 0;
1070 }
1071
1072 static int snd_via82xx_dev_free(struct snd_device *device)
1073 {
1074 struct via82xx_modem *chip = device->device_data;
1075 return snd_via82xx_free(chip);
1076 }
1077
1078 static int snd_via82xx_create(struct snd_card *card,
1079 struct pci_dev *pci,
1080 int chip_type,
1081 int revision,
1082 unsigned int ac97_clock,
1083 struct via82xx_modem **r_via)
1084 {
1085 struct via82xx_modem *chip;
1086 int err;
1087 static struct snd_device_ops ops = {
1088 .dev_free = snd_via82xx_dev_free,
1089 };
1090
1091 if ((err = pci_enable_device(pci)) < 0)
1092 return err;
1093
1094 if ((chip = kzalloc(sizeof(*chip), GFP_KERNEL)) == NULL) {
1095 pci_disable_device(pci);
1096 return -ENOMEM;
1097 }
1098
1099 spin_lock_init(&chip->reg_lock);
1100 chip->card = card;
1101 chip->pci = pci;
1102 chip->irq = -1;
1103
1104 if ((err = pci_request_regions(pci, card->driver)) < 0) {
1105 kfree(chip);
1106 pci_disable_device(pci);
1107 return err;
1108 }
1109 chip->port = pci_resource_start(pci, 0);
1110 if (request_irq(pci->irq, snd_via82xx_interrupt, IRQF_SHARED,
1111 KBUILD_MODNAME, chip)) {
1112 dev_err(card->dev, "unable to grab IRQ %d\n", pci->irq);
1113 snd_via82xx_free(chip);
1114 return -EBUSY;
1115 }
1116 chip->irq = pci->irq;
1117 if (ac97_clock >= 8000 && ac97_clock <= 48000)
1118 chip->ac97_clock = ac97_clock;
1119 synchronize_irq(chip->irq);
1120
1121 if ((err = snd_via82xx_chip_init(chip)) < 0) {
1122 snd_via82xx_free(chip);
1123 return err;
1124 }
1125
1126 if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
1127 snd_via82xx_free(chip);
1128 return err;
1129 }
1130
1131 /* The 8233 ac97 controller does not implement the master bit
1132 * in the pci command register. IMHO this is a violation of the PCI spec.
1133 * We call pci_set_master here because it does not hurt. */
1134 pci_set_master(pci);
1135
1136 *r_via = chip;
1137 return 0;
1138 }
1139
1140
1141 static int snd_via82xx_probe(struct pci_dev *pci,
1142 const struct pci_device_id *pci_id)
1143 {
1144 struct snd_card *card;
1145 struct via82xx_modem *chip;
1146 int chip_type = 0, card_type;
1147 unsigned int i;
1148 int err;
1149
1150 err = snd_card_new(&pci->dev, index, id, THIS_MODULE, 0, &card);
1151 if (err < 0)
1152 return err;
1153
1154 card_type = pci_id->driver_data;
1155 switch (card_type) {
1156 case TYPE_CARD_VIA82XX_MODEM:
1157 strcpy(card->driver, "VIA82XX-MODEM");
1158 sprintf(card->shortname, "VIA 82XX modem");
1159 break;
1160 default:
1161 dev_err(card->dev, "invalid card type %d\n", card_type);
1162 err = -EINVAL;
1163 goto __error;
1164 }
1165
1166 if ((err = snd_via82xx_create(card, pci, chip_type, pci->revision,
1167 ac97_clock, &chip)) < 0)
1168 goto __error;
1169 card->private_data = chip;
1170 if ((err = snd_via82xx_mixer_new(chip)) < 0)
1171 goto __error;
1172
1173 if ((err = snd_via686_pcm_new(chip)) < 0 )
1174 goto __error;
1175
1176 /* disable interrupts */
1177 for (i = 0; i < chip->num_devs; i++)
1178 snd_via82xx_channel_reset(chip, &chip->devs[i]);
1179
1180 sprintf(card->longname, "%s at 0x%lx, irq %d",
1181 card->shortname, chip->port, chip->irq);
1182
1183 snd_via82xx_proc_init(chip);
1184
1185 if ((err = snd_card_register(card)) < 0) {
1186 snd_card_free(card);
1187 return err;
1188 }
1189 pci_set_drvdata(pci, card);
1190 return 0;
1191
1192 __error:
1193 snd_card_free(card);
1194 return err;
1195 }
1196
1197 static void snd_via82xx_remove(struct pci_dev *pci)
1198 {
1199 snd_card_free(pci_get_drvdata(pci));
1200 }
1201
1202 static struct pci_driver via82xx_modem_driver = {
1203 .name = KBUILD_MODNAME,
1204 .id_table = snd_via82xx_modem_ids,
1205 .probe = snd_via82xx_probe,
1206 .remove = snd_via82xx_remove,
1207 .driver = {
1208 .pm = SND_VIA82XX_PM_OPS,
1209 },
1210 };
1211
1212 module_pci_driver(via82xx_modem_driver);
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