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crypto: gcm - Fix rfc4543 decryption crash
[linux/fpc-iii.git] / sound / pci / via82xx_modem.c
blob46a0526b1d7902ab81e4a29d7fb2ce1506410f67
1 /*
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@perex.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@alsa-project.org>
30 * Modified from original audio driver 'via82xx.c' to support AC97
31 * modems.
32 */
33
34 #include <asm/io.h>
35 #include <linux/delay.h>
36 #include <linux/interrupt.h>
37 #include <linux/init.h>
38 #include <linux/pci.h>
39 #include <linux/slab.h>
40 #include <linux/module.h>
41 #include <sound/core.h>
42 #include <sound/pcm.h>
43 #include <sound/pcm_params.h>
44 #include <sound/info.h>
45 #include <sound/ac97_codec.h>
46 #include <sound/initval.h>
47
48 #if 0
49 #define POINTER_DEBUG
50 #endif
51
52 MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
53 MODULE_DESCRIPTION("VIA VT82xx modem");
54 MODULE_LICENSE("GPL");
55 MODULE_SUPPORTED_DEVICE("{{VIA,VT82C686A/B/C modem,pci}}");
56
57 static int index = -2; /* Exclude the first card */
58 static char *id = SNDRV_DEFAULT_STR1; /* ID for this card */
59 static int ac97_clock = 48000;
60
61 module_param(index, int, 0444);
62 MODULE_PARM_DESC(index, "Index value for VIA 82xx bridge.");
63 module_param(id, charp, 0444);
64 MODULE_PARM_DESC(id, "ID string for VIA 82xx bridge.");
65 module_param(ac97_clock, int, 0444);
66 MODULE_PARM_DESC(ac97_clock, "AC'97 codec clock (default 48000Hz).");
67
68 /* just for backward compatibility */
69 static bool enable;
70 module_param(enable, bool, 0444);
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) \
115 enum {\
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 */
126 DEFINE_VIA_REGSET(MO, 0x40);
127 DEFINE_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
208 /*
209 * pcm stream
210 */
211
212 struct snd_via_sg_table {
213 unsigned int offset;
214 unsigned int size;
215 } ;
216
217 #define VIA_TABLE_SIZE 255
218
219 struct viadev {
220 unsigned int reg_offset;
221 unsigned long port;
222 int direction; /* playback = 0, capture = 1 */
223 struct snd_pcm_substream *substream;
224 int running;
225 unsigned int tbl_entries; /* # descriptors */
226 struct snd_dma_buffer table;
227 struct snd_via_sg_table *idx_table;
228 /* for recovery from the unexpected pointer */
229 unsigned int lastpos;
230 unsigned int bufsize;
231 unsigned int bufsize2;
232 };
233
234 enum { TYPE_CARD_VIA82XX_MODEM = 1 };
235
236 #define VIA_MAX_MODEM_DEVS 2
237
238 struct via82xx_modem {
239 int irq;
240
241 unsigned long port;
242
243 unsigned int intr_mask; /* SGD_SHADOW mask to check interrupts */
244
245 struct pci_dev *pci;
246 struct snd_card *card;
247
248 unsigned int num_devs;
249 unsigned int playback_devno, capture_devno;
250 struct viadev devs[VIA_MAX_MODEM_DEVS];
251
252 struct snd_pcm *pcms[2];
253
254 struct snd_ac97_bus *ac97_bus;
255 struct snd_ac97 *ac97;
256 unsigned int ac97_clock;
257 unsigned int ac97_secondary; /* secondary AC'97 codec is present */
258
259 spinlock_t reg_lock;
260 struct snd_info_entry *proc_entry;
261 };
262
263 static DEFINE_PCI_DEVICE_TABLE(snd_via82xx_modem_ids) = {
264 { PCI_VDEVICE(VIA, 0x3068), TYPE_CARD_VIA82XX_MODEM, },
265 { 0, }
266 };
267
268 MODULE_DEVICE_TABLE(pci, snd_via82xx_modem_ids);
269
270 /*
271 */
272
273 /*
274 * allocate and initialize the descriptor buffers
275 * periods = number of periods
276 * fragsize = period size in bytes
277 */
278 static int build_via_table(struct viadev *dev, struct snd_pcm_substream *substream,
279 struct pci_dev *pci,
280 unsigned int periods, unsigned int fragsize)
281 {
282 unsigned int i, idx, ofs, rest;
283 struct via82xx_modem *chip = snd_pcm_substream_chip(substream);
284
285 if (dev->table.area == NULL) {
286 /* the start of each lists must be aligned to 8 bytes,
287 * but the kernel pages are much bigger, so we don't care
288 */
289 if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(chip->pci),
290 PAGE_ALIGN(VIA_TABLE_SIZE * 2 * 8),
291 &dev->table) < 0)
292 return -ENOMEM;
293 }
294 if (! dev->idx_table) {
295 dev->idx_table = kmalloc(sizeof(*dev->idx_table) * VIA_TABLE_SIZE, GFP_KERNEL);
296 if (! dev->idx_table)
297 return -ENOMEM;
298 }
299
300 /* fill the entries */
301 idx = 0;
302 ofs = 0;
303 for (i = 0; i < periods; i++) {
304 rest = fragsize;
305 /* fill descriptors for a period.
306 * a period can be split to several descriptors if it's
307 * over page boundary.
308 */
309 do {
310 unsigned int r;
311 unsigned int flag;
312 unsigned int addr;
313
314 if (idx >= VIA_TABLE_SIZE) {
315 dev_err(&pci->dev, "too much table size!\n");
316 return -EINVAL;
317 }
318 addr = snd_pcm_sgbuf_get_addr(substream, ofs);
319 ((u32 *)dev->table.area)[idx << 1] = cpu_to_le32(addr);
320 r = PAGE_SIZE - (ofs % PAGE_SIZE);
321 if (rest < r)
322 r = rest;
323 rest -= r;
324 if (! rest) {
325 if (i == periods - 1)
326 flag = VIA_TBL_BIT_EOL; /* buffer boundary */
327 else
328 flag = VIA_TBL_BIT_FLAG; /* period boundary */
329 } else
330 flag = 0; /* period continues to the next */
331 /*
332 dev_dbg(&pci->dev,
333 "tbl %d: at %d size %d (rest %d)\n",
334 idx, ofs, r, rest);
335 */
336 ((u32 *)dev->table.area)[(idx<<1) + 1] = cpu_to_le32(r | flag);
337 dev->idx_table[idx].offset = ofs;
338 dev->idx_table[idx].size = r;
339 ofs += r;
340 idx++;
341 } while (rest > 0);
342 }
343 dev->tbl_entries = idx;
344 dev->bufsize = periods * fragsize;
345 dev->bufsize2 = dev->bufsize / 2;
346 return 0;
347 }
348
349
350 static int clean_via_table(struct viadev *dev, struct snd_pcm_substream *substream,
351 struct pci_dev *pci)
352 {
353 if (dev->table.area) {
354 snd_dma_free_pages(&dev->table);
355 dev->table.area = NULL;
356 }
357 kfree(dev->idx_table);
358 dev->idx_table = NULL;
359 return 0;
360 }
361
362 /*
363 * Basic I/O
364 */
365
366 static inline unsigned int snd_via82xx_codec_xread(struct via82xx_modem *chip)
367 {
368 return inl(VIAREG(chip, AC97));
369 }
370
371 static inline void snd_via82xx_codec_xwrite(struct via82xx_modem *chip, unsigned int val)
372 {
373 outl(val, VIAREG(chip, AC97));
374 }
375
376 static int snd_via82xx_codec_ready(struct via82xx_modem *chip, int secondary)
377 {
378 unsigned int timeout = 1000; /* 1ms */
379 unsigned int val;
380
381 while (timeout-- > 0) {
382 udelay(1);
383 if (!((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY))
384 return val & 0xffff;
385 }
386 dev_err(chip->card->dev, "codec_ready: codec %i is not ready [0x%x]\n",
387 secondary, snd_via82xx_codec_xread(chip));
388 return -EIO;
389 }
390
391 static int snd_via82xx_codec_valid(struct via82xx_modem *chip, int secondary)
392 {
393 unsigned int timeout = 1000; /* 1ms */
394 unsigned int val, val1;
395 unsigned int stat = !secondary ? VIA_REG_AC97_PRIMARY_VALID :
396 VIA_REG_AC97_SECONDARY_VALID;
397
398 while (timeout-- > 0) {
399 val = snd_via82xx_codec_xread(chip);
400 val1 = val & (VIA_REG_AC97_BUSY | stat);
401 if (val1 == stat)
402 return val & 0xffff;
403 udelay(1);
404 }
405 return -EIO;
406 }
407
408 static void snd_via82xx_codec_wait(struct snd_ac97 *ac97)
409 {
410 struct via82xx_modem *chip = ac97->private_data;
411 int err;
412 err = snd_via82xx_codec_ready(chip, ac97->num);
413 /* here we need to wait fairly for long time.. */
414 msleep(500);
415 }
416
417 static void snd_via82xx_codec_write(struct snd_ac97 *ac97,
418 unsigned short reg,
419 unsigned short val)
420 {
421 struct via82xx_modem *chip = ac97->private_data;
422 unsigned int xval;
423 if(reg == AC97_GPIO_STATUS) {
424 outl(val, VIAREG(chip, GPI_STATUS));
425 return;
426 }
427 xval = !ac97->num ? VIA_REG_AC97_CODEC_ID_PRIMARY : VIA_REG_AC97_CODEC_ID_SECONDARY;
428 xval <<= VIA_REG_AC97_CODEC_ID_SHIFT;
429 xval |= reg << VIA_REG_AC97_CMD_SHIFT;
430 xval |= val << VIA_REG_AC97_DATA_SHIFT;
431 snd_via82xx_codec_xwrite(chip, xval);
432 snd_via82xx_codec_ready(chip, ac97->num);
433 }
434
435 static unsigned short snd_via82xx_codec_read(struct snd_ac97 *ac97, unsigned short reg)
436 {
437 struct via82xx_modem *chip = ac97->private_data;
438 unsigned int xval, val = 0xffff;
439 int again = 0;
440
441 xval = ac97->num << VIA_REG_AC97_CODEC_ID_SHIFT;
442 xval |= ac97->num ? VIA_REG_AC97_SECONDARY_VALID : VIA_REG_AC97_PRIMARY_VALID;
443 xval |= VIA_REG_AC97_READ;
444 xval |= (reg & 0x7f) << VIA_REG_AC97_CMD_SHIFT;
445 while (1) {
446 if (again++ > 3) {
447 dev_err(chip->card->dev,
448 "codec_read: codec %i is not valid [0x%x]\n",
449 ac97->num, snd_via82xx_codec_xread(chip));
450 return 0xffff;
451 }
452 snd_via82xx_codec_xwrite(chip, xval);
453 udelay (20);
454 if (snd_via82xx_codec_valid(chip, ac97->num) >= 0) {
455 udelay(25);
456 val = snd_via82xx_codec_xread(chip);
457 break;
458 }
459 }
460 return val & 0xffff;
461 }
462
463 static void snd_via82xx_channel_reset(struct via82xx_modem *chip, struct viadev *viadev)
464 {
465 outb(VIA_REG_CTRL_PAUSE | VIA_REG_CTRL_TERMINATE | VIA_REG_CTRL_RESET,
466 VIADEV_REG(viadev, OFFSET_CONTROL));
467 inb(VIADEV_REG(viadev, OFFSET_CONTROL));
468 udelay(50);
469 /* disable interrupts */
470 outb(0x00, VIADEV_REG(viadev, OFFSET_CONTROL));
471 /* clear interrupts */
472 outb(0x03, VIADEV_REG(viadev, OFFSET_STATUS));
473 outb(0x00, VIADEV_REG(viadev, OFFSET_TYPE)); /* for via686 */
474 // outl(0, VIADEV_REG(viadev, OFFSET_CURR_PTR));
475 viadev->lastpos = 0;
476 }
477
478
479 /*
480 * Interrupt handler
481 */
482
483 static irqreturn_t snd_via82xx_interrupt(int irq, void *dev_id)
484 {
485 struct via82xx_modem *chip = dev_id;
486 unsigned int status;
487 unsigned int i;
488
489 status = inl(VIAREG(chip, SGD_SHADOW));
490 if (! (status & chip->intr_mask)) {
491 return IRQ_NONE;
492 }
493 // _skip_sgd:
494
495 /* check status for each stream */
496 spin_lock(&chip->reg_lock);
497 for (i = 0; i < chip->num_devs; i++) {
498 struct viadev *viadev = &chip->devs[i];
499 unsigned char c_status = inb(VIADEV_REG(viadev, OFFSET_STATUS));
500 c_status &= (VIA_REG_STAT_EOL|VIA_REG_STAT_FLAG|VIA_REG_STAT_STOPPED);
501 if (! c_status)
502 continue;
503 if (viadev->substream && viadev->running) {
504 spin_unlock(&chip->reg_lock);
505 snd_pcm_period_elapsed(viadev->substream);
506 spin_lock(&chip->reg_lock);
507 }
508 outb(c_status, VIADEV_REG(viadev, OFFSET_STATUS)); /* ack */
509 }
510 spin_unlock(&chip->reg_lock);
511 return IRQ_HANDLED;
512 }
513
514 /*
515 * PCM callbacks
516 */
517
518 /*
519 * trigger callback
520 */
521 static int snd_via82xx_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
522 {
523 struct via82xx_modem *chip = snd_pcm_substream_chip(substream);
524 struct viadev *viadev = substream->runtime->private_data;
525 unsigned char val = 0;
526
527 switch (cmd) {
528 case SNDRV_PCM_TRIGGER_START:
529 case SNDRV_PCM_TRIGGER_SUSPEND:
530 val |= VIA_REG_CTRL_START;
531 viadev->running = 1;
532 break;
533 case SNDRV_PCM_TRIGGER_STOP:
534 val = VIA_REG_CTRL_TERMINATE;
535 viadev->running = 0;
536 break;
537 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
538 val |= VIA_REG_CTRL_PAUSE;
539 viadev->running = 0;
540 break;
541 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
542 viadev->running = 1;
543 break;
544 default:
545 return -EINVAL;
546 }
547 outb(val, VIADEV_REG(viadev, OFFSET_CONTROL));
548 if (cmd == SNDRV_PCM_TRIGGER_STOP)
549 snd_via82xx_channel_reset(chip, viadev);
550 return 0;
551 }
552
553 /*
554 * pointer callbacks
555 */
556
557 /*
558 * calculate the linear position at the given sg-buffer index and the rest count
559 */
560
561 #define check_invalid_pos(viadev,pos) \
562 ((pos) < viadev->lastpos && ((pos) >= viadev->bufsize2 ||\
563 viadev->lastpos < viadev->bufsize2))
564
565 static inline unsigned int calc_linear_pos(struct via82xx_modem *chip,
566 struct viadev *viadev,
567 unsigned int idx,
568 unsigned int count)
569 {
570 unsigned int size, res;
571
572 size = viadev->idx_table[idx].size;
573 res = viadev->idx_table[idx].offset + size - count;
574
575 /* check the validity of the calculated position */
576 if (size < count) {
577 dev_err(chip->card->dev,
578 "invalid via82xx_cur_ptr (size = %d, count = %d)\n",
579 (int)size, (int)count);
580 res = viadev->lastpos;
581 } else if (check_invalid_pos(viadev, res)) {
582 #ifdef POINTER_DEBUG
583 dev_dbg(chip->card->dev,
584 "fail: idx = %i/%i, lastpos = 0x%x, bufsize2 = 0x%x, offsize = 0x%x, size = 0x%x, count = 0x%x\n",
585 idx, viadev->tbl_entries, viadev->lastpos,
586 viadev->bufsize2, viadev->idx_table[idx].offset,
587 viadev->idx_table[idx].size, count);
588 #endif
589 if (count && size < count) {
590 dev_dbg(chip->card->dev,
591 "invalid via82xx_cur_ptr, using last valid pointer\n");
592 res = viadev->lastpos;
593 } else {
594 if (! count)
595 /* bogus count 0 on the DMA boundary? */
596 res = viadev->idx_table[idx].offset;
597 else
598 /* count register returns full size
599 * when end of buffer is reached
600 */
601 res = viadev->idx_table[idx].offset + size;
602 if (check_invalid_pos(viadev, res)) {
603 dev_dbg(chip->card->dev,
604 "invalid via82xx_cur_ptr (2), using last valid pointer\n");
605 res = viadev->lastpos;
606 }
607 }
608 }
609 viadev->lastpos = res; /* remember the last position */
610 if (res >= viadev->bufsize)
611 res -= viadev->bufsize;
612 return res;
613 }
614
615 /*
616 * get the current pointer on via686
617 */
618 static snd_pcm_uframes_t snd_via686_pcm_pointer(struct snd_pcm_substream *substream)
619 {
620 struct via82xx_modem *chip = snd_pcm_substream_chip(substream);
621 struct viadev *viadev = substream->runtime->private_data;
622 unsigned int idx, ptr, count, res;
623
624 if (snd_BUG_ON(!viadev->tbl_entries))
625 return 0;
626 if (!(inb(VIADEV_REG(viadev, OFFSET_STATUS)) & VIA_REG_STAT_ACTIVE))
627 return 0;
628
629 spin_lock(&chip->reg_lock);
630 count = inl(VIADEV_REG(viadev, OFFSET_CURR_COUNT)) & 0xffffff;
631 /* The via686a does not have the current index register,
632 * so we need to calculate the index from CURR_PTR.
633 */
634 ptr = inl(VIADEV_REG(viadev, OFFSET_CURR_PTR));
635 if (ptr <= (unsigned int)viadev->table.addr)
636 idx = 0;
637 else /* CURR_PTR holds the address + 8 */
638 idx = ((ptr - (unsigned int)viadev->table.addr) / 8 - 1) %
639 viadev->tbl_entries;
640 res = calc_linear_pos(chip, viadev, idx, count);
641 spin_unlock(&chip->reg_lock);
642
643 return bytes_to_frames(substream->runtime, res);
644 }
645
646 /*
647 * hw_params callback:
648 * allocate the buffer and build up the buffer description table
649 */
650 static int snd_via82xx_hw_params(struct snd_pcm_substream *substream,
651 struct snd_pcm_hw_params *hw_params)
652 {
653 struct via82xx_modem *chip = snd_pcm_substream_chip(substream);
654 struct viadev *viadev = substream->runtime->private_data;
655 int err;
656
657 err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
658 if (err < 0)
659 return err;
660 err = build_via_table(viadev, substream, chip->pci,
661 params_periods(hw_params),
662 params_period_bytes(hw_params));
663 if (err < 0)
664 return err;
665
666 snd_ac97_write(chip->ac97, AC97_LINE1_RATE, params_rate(hw_params));
667 snd_ac97_write(chip->ac97, AC97_LINE1_LEVEL, 0);
668
669 return 0;
670 }
671
672 /*
673 * hw_free callback:
674 * clean up the buffer description table and release the buffer
675 */
676 static int snd_via82xx_hw_free(struct snd_pcm_substream *substream)
677 {
678 struct via82xx_modem *chip = snd_pcm_substream_chip(substream);
679 struct viadev *viadev = substream->runtime->private_data;
680
681 clean_via_table(viadev, substream, chip->pci);
682 snd_pcm_lib_free_pages(substream);
683 return 0;
684 }
685
686
687 /*
688 * set up the table pointer
689 */
690 static void snd_via82xx_set_table_ptr(struct via82xx_modem *chip, struct viadev *viadev)
691 {
692 snd_via82xx_codec_ready(chip, chip->ac97_secondary);
693 outl((u32)viadev->table.addr, VIADEV_REG(viadev, OFFSET_TABLE_PTR));
694 udelay(20);
695 snd_via82xx_codec_ready(chip, chip->ac97_secondary);
696 }
697
698 /*
699 * prepare callback for playback and capture
700 */
701 static int snd_via82xx_pcm_prepare(struct snd_pcm_substream *substream)
702 {
703 struct via82xx_modem *chip = snd_pcm_substream_chip(substream);
704 struct viadev *viadev = substream->runtime->private_data;
705
706 snd_via82xx_channel_reset(chip, viadev);
707 /* this must be set after channel_reset */
708 snd_via82xx_set_table_ptr(chip, viadev);
709 outb(VIA_REG_TYPE_AUTOSTART|VIA_REG_TYPE_INT_EOL|VIA_REG_TYPE_INT_FLAG,
710 VIADEV_REG(viadev, OFFSET_TYPE));
711 return 0;
712 }
713
714 /*
715 * pcm hardware definition, identical for both playback and capture
716 */
717 static struct snd_pcm_hardware snd_via82xx_hw =
718 {
719 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
720 SNDRV_PCM_INFO_BLOCK_TRANSFER |
721 SNDRV_PCM_INFO_MMAP_VALID |
722 /* SNDRV_PCM_INFO_RESUME | */
723 SNDRV_PCM_INFO_PAUSE),
724 .formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE,
725 .rates = SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_KNOT,
726 .rate_min = 8000,
727 .rate_max = 16000,
728 .channels_min = 1,
729 .channels_max = 1,
730 .buffer_bytes_max = 128 * 1024,
731 .period_bytes_min = 32,
732 .period_bytes_max = 128 * 1024,
733 .periods_min = 2,
734 .periods_max = VIA_TABLE_SIZE / 2,
735 .fifo_size = 0,
736 };
737
738
739 /*
740 * open callback skeleton
741 */
742 static int snd_via82xx_modem_pcm_open(struct via82xx_modem *chip, struct viadev *viadev,
743 struct snd_pcm_substream *substream)
744 {
745 struct snd_pcm_runtime *runtime = substream->runtime;
746 int err;
747 static unsigned int rates[] = { 8000, 9600, 12000, 16000 };
748 static struct snd_pcm_hw_constraint_list hw_constraints_rates = {
749 .count = ARRAY_SIZE(rates),
750 .list = rates,
751 .mask = 0,
752 };
753
754 runtime->hw = snd_via82xx_hw;
755
756 if ((err = snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
757 &hw_constraints_rates)) < 0)
758 return err;
759
760 /* we may remove following constaint when we modify table entries
761 in interrupt */
762 if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
763 return err;
764
765 runtime->private_data = viadev;
766 viadev->substream = substream;
767
768 return 0;
769 }
770
771
772 /*
773 * open callback for playback
774 */
775 static int snd_via82xx_playback_open(struct snd_pcm_substream *substream)
776 {
777 struct via82xx_modem *chip = snd_pcm_substream_chip(substream);
778 struct viadev *viadev = &chip->devs[chip->playback_devno + substream->number];
779
780 return snd_via82xx_modem_pcm_open(chip, viadev, substream);
781 }
782
783 /*
784 * open callback for capture
785 */
786 static int snd_via82xx_capture_open(struct snd_pcm_substream *substream)
787 {
788 struct via82xx_modem *chip = snd_pcm_substream_chip(substream);
789 struct viadev *viadev = &chip->devs[chip->capture_devno + substream->pcm->device];
790
791 return snd_via82xx_modem_pcm_open(chip, viadev, substream);
792 }
793
794 /*
795 * close callback
796 */
797 static int snd_via82xx_pcm_close(struct snd_pcm_substream *substream)
798 {
799 struct viadev *viadev = substream->runtime->private_data;
800
801 viadev->substream = NULL;
802 return 0;
803 }
804
805
806 /* via686 playback callbacks */
807 static struct snd_pcm_ops snd_via686_playback_ops = {
808 .open = snd_via82xx_playback_open,
809 .close = snd_via82xx_pcm_close,
810 .ioctl = snd_pcm_lib_ioctl,
811 .hw_params = snd_via82xx_hw_params,
812 .hw_free = snd_via82xx_hw_free,
813 .prepare = snd_via82xx_pcm_prepare,
814 .trigger = snd_via82xx_pcm_trigger,
815 .pointer = snd_via686_pcm_pointer,
816 .page = snd_pcm_sgbuf_ops_page,
817 };
818
819 /* via686 capture callbacks */
820 static struct snd_pcm_ops snd_via686_capture_ops = {
821 .open = snd_via82xx_capture_open,
822 .close = snd_via82xx_pcm_close,
823 .ioctl = snd_pcm_lib_ioctl,
824 .hw_params = snd_via82xx_hw_params,
825 .hw_free = snd_via82xx_hw_free,
826 .prepare = snd_via82xx_pcm_prepare,
827 .trigger = snd_via82xx_pcm_trigger,
828 .pointer = snd_via686_pcm_pointer,
829 .page = snd_pcm_sgbuf_ops_page,
830 };
831
832
833 static void init_viadev(struct via82xx_modem *chip, int idx, unsigned int reg_offset,
834 int direction)
835 {
836 chip->devs[idx].reg_offset = reg_offset;
837 chip->devs[idx].direction = direction;
838 chip->devs[idx].port = chip->port + reg_offset;
839 }
840
841 /*
842 * create a pcm instance for via686a/b
843 */
844 static int snd_via686_pcm_new(struct via82xx_modem *chip)
845 {
846 struct snd_pcm *pcm;
847 int err;
848
849 chip->playback_devno = 0;
850 chip->capture_devno = 1;
851 chip->num_devs = 2;
852 chip->intr_mask = 0x330000; /* FLAGS | EOL for MR, MW */
853
854 err = snd_pcm_new(chip->card, chip->card->shortname, 0, 1, 1, &pcm);
855 if (err < 0)
856 return err;
857 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via686_playback_ops);
858 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via686_capture_ops);
859 pcm->dev_class = SNDRV_PCM_CLASS_MODEM;
860 pcm->private_data = chip;
861 strcpy(pcm->name, chip->card->shortname);
862 chip->pcms[0] = pcm;
863 init_viadev(chip, 0, VIA_REG_MO_STATUS, 0);
864 init_viadev(chip, 1, VIA_REG_MI_STATUS, 1);
865
866 if ((err = snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
867 snd_dma_pci_data(chip->pci),
868 64*1024, 128*1024)) < 0)
869 return err;
870
871 return 0;
872 }
873
874
875 /*
876 * Mixer part
877 */
878
879
880 static void snd_via82xx_mixer_free_ac97_bus(struct snd_ac97_bus *bus)
881 {
882 struct via82xx_modem *chip = bus->private_data;
883 chip->ac97_bus = NULL;
884 }
885
886 static void snd_via82xx_mixer_free_ac97(struct snd_ac97 *ac97)
887 {
888 struct via82xx_modem *chip = ac97->private_data;
889 chip->ac97 = NULL;
890 }
891
892
893 static int snd_via82xx_mixer_new(struct via82xx_modem *chip)
894 {
895 struct snd_ac97_template ac97;
896 int err;
897 static struct snd_ac97_bus_ops ops = {
898 .write = snd_via82xx_codec_write,
899 .read = snd_via82xx_codec_read,
900 .wait = snd_via82xx_codec_wait,
901 };
902
903 if ((err = snd_ac97_bus(chip->card, 0, &ops, chip, &chip->ac97_bus)) < 0)
904 return err;
905 chip->ac97_bus->private_free = snd_via82xx_mixer_free_ac97_bus;
906 chip->ac97_bus->clock = chip->ac97_clock;
907
908 memset(&ac97, 0, sizeof(ac97));
909 ac97.private_data = chip;
910 ac97.private_free = snd_via82xx_mixer_free_ac97;
911 ac97.pci = chip->pci;
912 ac97.scaps = AC97_SCAP_SKIP_AUDIO | AC97_SCAP_POWER_SAVE;
913 ac97.num = chip->ac97_secondary;
914
915 if ((err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97)) < 0)
916 return err;
917
918 return 0;
919 }
920
921
922 /*
923 * proc interface
924 */
925 static void snd_via82xx_proc_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer)
926 {
927 struct via82xx_modem *chip = entry->private_data;
928 int i;
929
930 snd_iprintf(buffer, "%s\n\n", chip->card->longname);
931 for (i = 0; i < 0xa0; i += 4) {
932 snd_iprintf(buffer, "%02x: %08x\n", i, inl(chip->port + i));
933 }
934 }
935
936 static void snd_via82xx_proc_init(struct via82xx_modem *chip)
937 {
938 struct snd_info_entry *entry;
939
940 if (! snd_card_proc_new(chip->card, "via82xx", &entry))
941 snd_info_set_text_ops(entry, chip, snd_via82xx_proc_read);
942 }
943
944 /*
945 *
946 */
947
948 static int snd_via82xx_chip_init(struct via82xx_modem *chip)
949 {
950 unsigned int val;
951 unsigned long end_time;
952 unsigned char pval;
953
954 pci_read_config_byte(chip->pci, VIA_MC97_CTRL, &pval);
955 if((pval & VIA_MC97_CTRL_INIT) != VIA_MC97_CTRL_INIT) {
956 pci_write_config_byte(chip->pci, 0x44, pval|VIA_MC97_CTRL_INIT);
957 udelay(100);
958 }
959
960 pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval);
961 if (! (pval & VIA_ACLINK_C00_READY)) { /* codec not ready? */
962 /* deassert ACLink reset, force SYNC */
963 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL,
964 VIA_ACLINK_CTRL_ENABLE |
965 VIA_ACLINK_CTRL_RESET |
966 VIA_ACLINK_CTRL_SYNC);
967 udelay(100);
968 #if 1 /* FIXME: should we do full reset here for all chip models? */
969 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, 0x00);
970 udelay(100);
971 #else
972 /* deassert ACLink reset, force SYNC (warm AC'97 reset) */
973 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL,
974 VIA_ACLINK_CTRL_RESET|VIA_ACLINK_CTRL_SYNC);
975 udelay(2);
976 #endif
977 /* ACLink on, deassert ACLink reset, VSR, SGD data out */
978 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT);
979 udelay(100);
980 }
981
982 pci_read_config_byte(chip->pci, VIA_ACLINK_CTRL, &pval);
983 if ((pval & VIA_ACLINK_CTRL_INIT) != VIA_ACLINK_CTRL_INIT) {
984 /* ACLink on, deassert ACLink reset, VSR, SGD data out */
985 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT);
986 udelay(100);
987 }
988
989 /* wait until codec ready */
990 end_time = jiffies + msecs_to_jiffies(750);
991 do {
992 pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval);
993 if (pval & VIA_ACLINK_C00_READY) /* primary codec ready */
994 break;
995 schedule_timeout_uninterruptible(1);
996 } while (time_before(jiffies, end_time));
997
998 if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY)
999 dev_err(chip->card->dev,
1000 "AC'97 codec is not ready [0x%x]\n", val);
1001
1002 snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ |
1003 VIA_REG_AC97_SECONDARY_VALID |
1004 (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT));
1005 end_time = jiffies + msecs_to_jiffies(750);
1006 snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ |
1007 VIA_REG_AC97_SECONDARY_VALID |
1008 (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT));
1009 do {
1010 if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_SECONDARY_VALID) {
1011 chip->ac97_secondary = 1;
1012 goto __ac97_ok2;
1013 }
1014 schedule_timeout_uninterruptible(1);
1015 } while (time_before(jiffies, end_time));
1016 /* This is ok, the most of motherboards have only one codec */
1017
1018 __ac97_ok2:
1019
1020 /* route FM trap to IRQ, disable FM trap */
1021 // pci_write_config_byte(chip->pci, VIA_FM_NMI_CTRL, 0);
1022 /* disable all GPI interrupts */
1023 outl(0, VIAREG(chip, GPI_INTR));
1024
1025 return 0;
1026 }
1027
1028 #ifdef CONFIG_PM_SLEEP
1029 /*
1030 * power management
1031 */
1032 static int snd_via82xx_suspend(struct device *dev)
1033 {
1034 struct pci_dev *pci = to_pci_dev(dev);
1035 struct snd_card *card = dev_get_drvdata(dev);
1036 struct via82xx_modem *chip = card->private_data;
1037 int i;
1038
1039 snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
1040 for (i = 0; i < 2; i++)
1041 snd_pcm_suspend_all(chip->pcms[i]);
1042 for (i = 0; i < chip->num_devs; i++)
1043 snd_via82xx_channel_reset(chip, &chip->devs[i]);
1044 synchronize_irq(chip->irq);
1045 snd_ac97_suspend(chip->ac97);
1046
1047 pci_disable_device(pci);
1048 pci_save_state(pci);
1049 pci_set_power_state(pci, PCI_D3hot);
1050 return 0;
1051 }
1052
1053 static int snd_via82xx_resume(struct device *dev)
1054 {
1055 struct pci_dev *pci = to_pci_dev(dev);
1056 struct snd_card *card = dev_get_drvdata(dev);
1057 struct via82xx_modem *chip = card->private_data;
1058 int i;
1059
1060 pci_set_power_state(pci, PCI_D0);
1061 pci_restore_state(pci);
1062 if (pci_enable_device(pci) < 0) {
1063 dev_err(dev, "pci_enable_device failed, disabling device\n");
1064 snd_card_disconnect(card);
1065 return -EIO;
1066 }
1067 pci_set_master(pci);
1068
1069 snd_via82xx_chip_init(chip);
1070
1071 snd_ac97_resume(chip->ac97);
1072
1073 for (i = 0; i < chip->num_devs; i++)
1074 snd_via82xx_channel_reset(chip, &chip->devs[i]);
1075
1076 snd_power_change_state(card, SNDRV_CTL_POWER_D0);
1077 return 0;
1078 }
1079
1080 static SIMPLE_DEV_PM_OPS(snd_via82xx_pm, snd_via82xx_suspend, snd_via82xx_resume);
1081 #define SND_VIA82XX_PM_OPS &snd_via82xx_pm
1082 #else
1083 #define SND_VIA82XX_PM_OPS NULL
1084 #endif /* CONFIG_PM_SLEEP */
1085
1086 static int snd_via82xx_free(struct via82xx_modem *chip)
1087 {
1088 unsigned int i;
1089
1090 if (chip->irq < 0)
1091 goto __end_hw;
1092 /* disable interrupts */
1093 for (i = 0; i < chip->num_devs; i++)
1094 snd_via82xx_channel_reset(chip, &chip->devs[i]);
1095
1096 __end_hw:
1097 if (chip->irq >= 0)
1098 free_irq(chip->irq, chip);
1099 pci_release_regions(chip->pci);
1100 pci_disable_device(chip->pci);
1101 kfree(chip);
1102 return 0;
1103 }
1104
1105 static int snd_via82xx_dev_free(struct snd_device *device)
1106 {
1107 struct via82xx_modem *chip = device->device_data;
1108 return snd_via82xx_free(chip);
1109 }
1110
1111 static int snd_via82xx_create(struct snd_card *card,
1112 struct pci_dev *pci,
1113 int chip_type,
1114 int revision,
1115 unsigned int ac97_clock,
1116 struct via82xx_modem **r_via)
1117 {
1118 struct via82xx_modem *chip;
1119 int err;
1120 static struct snd_device_ops ops = {
1121 .dev_free = snd_via82xx_dev_free,
1122 };
1123
1124 if ((err = pci_enable_device(pci)) < 0)
1125 return err;
1126
1127 if ((chip = kzalloc(sizeof(*chip), GFP_KERNEL)) == NULL) {
1128 pci_disable_device(pci);
1129 return -ENOMEM;
1130 }
1131
1132 spin_lock_init(&chip->reg_lock);
1133 chip->card = card;
1134 chip->pci = pci;
1135 chip->irq = -1;
1136
1137 if ((err = pci_request_regions(pci, card->driver)) < 0) {
1138 kfree(chip);
1139 pci_disable_device(pci);
1140 return err;
1141 }
1142 chip->port = pci_resource_start(pci, 0);
1143 if (request_irq(pci->irq, snd_via82xx_interrupt, IRQF_SHARED,
1144 KBUILD_MODNAME, chip)) {
1145 dev_err(card->dev, "unable to grab IRQ %d\n", pci->irq);
1146 snd_via82xx_free(chip);
1147 return -EBUSY;
1148 }
1149 chip->irq = pci->irq;
1150 if (ac97_clock >= 8000 && ac97_clock <= 48000)
1151 chip->ac97_clock = ac97_clock;
1152 synchronize_irq(chip->irq);
1153
1154 if ((err = snd_via82xx_chip_init(chip)) < 0) {
1155 snd_via82xx_free(chip);
1156 return err;
1157 }
1158
1159 if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
1160 snd_via82xx_free(chip);
1161 return err;
1162 }
1163
1164 /* The 8233 ac97 controller does not implement the master bit
1165 * in the pci command register. IMHO this is a violation of the PCI spec.
1166 * We call pci_set_master here because it does not hurt. */
1167 pci_set_master(pci);
1168
1169 *r_via = chip;
1170 return 0;
1171 }
1172
1173
1174 static int snd_via82xx_probe(struct pci_dev *pci,
1175 const struct pci_device_id *pci_id)
1176 {
1177 struct snd_card *card;
1178 struct via82xx_modem *chip;
1179 int chip_type = 0, card_type;
1180 unsigned int i;
1181 int err;
1182
1183 err = snd_card_new(&pci->dev, index, id, THIS_MODULE, 0, &card);
1184 if (err < 0)
1185 return err;
1186
1187 card_type = pci_id->driver_data;
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 dev_err(card->dev, "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, pci->revision,
1200 ac97_clock, &chip)) < 0)
1201 goto __error;
1202 card->private_data = chip;
1203 if ((err = snd_via82xx_mixer_new(chip)) < 0)
1204 goto __error;
1205
1206 if ((err = snd_via686_pcm_new(chip)) < 0 )
1207 goto __error;
1208
1209 /* disable interrupts */
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 return 0;
1224
1225 __error:
1226 snd_card_free(card);
1227 return err;
1228 }
1229
1230 static void snd_via82xx_remove(struct pci_dev *pci)
1231 {
1232 snd_card_free(pci_get_drvdata(pci));
1233 }
1234
1235 static struct pci_driver via82xx_modem_driver = {
1236 .name = KBUILD_MODNAME,
1237 .id_table = snd_via82xx_modem_ids,
1238 .probe = snd_via82xx_probe,
1239 .remove = snd_via82xx_remove,
1240 .driver = {
1241 .pm = SND_VIA82XX_PM_OPS,
1242 },
1243 };
1244
1245 module_pci_driver(via82xx_modem_driver);
Linux with added FPC-III support