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Staging: hv: make some vmbus_drv functions static
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / sound / pci / via82xx_modem.c
blobf7e8bbbe395392bbb4eecd170f75cfa5a3bd68c9
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/moduleparam.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 int 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 snd_printk(KERN_ERR "via82xx: 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 printk(KERN_DEBUG "via: tbl %d: at %d size %d "
333 "(rest %d)\n", idx, ofs, r, rest);
334 */
335 ((u32 *)dev->table.area)[(idx<<1) + 1] = cpu_to_le32(r | flag);
336 dev->idx_table[idx].offset = ofs;
337 dev->idx_table[idx].size = r;
338 ofs += r;
339 idx++;
340 } while (rest > 0);
341 }
342 dev->tbl_entries = idx;
343 dev->bufsize = periods * fragsize;
344 dev->bufsize2 = dev->bufsize / 2;
345 return 0;
346 }
347
348
349 static int clean_via_table(struct viadev *dev, struct snd_pcm_substream *substream,
350 struct pci_dev *pci)
351 {
352 if (dev->table.area) {
353 snd_dma_free_pages(&dev->table);
354 dev->table.area = NULL;
355 }
356 kfree(dev->idx_table);
357 dev->idx_table = NULL;
358 return 0;
359 }
360
361 /*
362 * Basic I/O
363 */
364
365 static inline unsigned int snd_via82xx_codec_xread(struct via82xx_modem *chip)
366 {
367 return inl(VIAREG(chip, AC97));
368 }
369
370 static inline void snd_via82xx_codec_xwrite(struct via82xx_modem *chip, unsigned int val)
371 {
372 outl(val, VIAREG(chip, AC97));
373 }
374
375 static int snd_via82xx_codec_ready(struct via82xx_modem *chip, int secondary)
376 {
377 unsigned int timeout = 1000; /* 1ms */
378 unsigned int val;
379
380 while (timeout-- > 0) {
381 udelay(1);
382 if (!((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY))
383 return val & 0xffff;
384 }
385 snd_printk(KERN_ERR "codec_ready: codec %i is not ready [0x%x]\n",
386 secondary, snd_via82xx_codec_xread(chip));
387 return -EIO;
388 }
389
390 static int snd_via82xx_codec_valid(struct via82xx_modem *chip, int secondary)
391 {
392 unsigned int timeout = 1000; /* 1ms */
393 unsigned int val, val1;
394 unsigned int stat = !secondary ? VIA_REG_AC97_PRIMARY_VALID :
395 VIA_REG_AC97_SECONDARY_VALID;
396
397 while (timeout-- > 0) {
398 val = snd_via82xx_codec_xread(chip);
399 val1 = val & (VIA_REG_AC97_BUSY | stat);
400 if (val1 == stat)
401 return val & 0xffff;
402 udelay(1);
403 }
404 return -EIO;
405 }
406
407 static void snd_via82xx_codec_wait(struct snd_ac97 *ac97)
408 {
409 struct via82xx_modem *chip = ac97->private_data;
410 int err;
411 err = snd_via82xx_codec_ready(chip, ac97->num);
412 /* here we need to wait fairly for long time.. */
413 msleep(500);
414 }
415
416 static void snd_via82xx_codec_write(struct snd_ac97 *ac97,
417 unsigned short reg,
418 unsigned short val)
419 {
420 struct via82xx_modem *chip = ac97->private_data;
421 unsigned int xval;
422 if(reg == AC97_GPIO_STATUS) {
423 outl(val, VIAREG(chip, GPI_STATUS));
424 return;
425 }
426 xval = !ac97->num ? VIA_REG_AC97_CODEC_ID_PRIMARY : VIA_REG_AC97_CODEC_ID_SECONDARY;
427 xval <<= VIA_REG_AC97_CODEC_ID_SHIFT;
428 xval |= reg << VIA_REG_AC97_CMD_SHIFT;
429 xval |= val << VIA_REG_AC97_DATA_SHIFT;
430 snd_via82xx_codec_xwrite(chip, xval);
431 snd_via82xx_codec_ready(chip, ac97->num);
432 }
433
434 static unsigned short snd_via82xx_codec_read(struct snd_ac97 *ac97, unsigned short reg)
435 {
436 struct via82xx_modem *chip = ac97->private_data;
437 unsigned int xval, val = 0xffff;
438 int again = 0;
439
440 xval = ac97->num << VIA_REG_AC97_CODEC_ID_SHIFT;
441 xval |= ac97->num ? VIA_REG_AC97_SECONDARY_VALID : VIA_REG_AC97_PRIMARY_VALID;
442 xval |= VIA_REG_AC97_READ;
443 xval |= (reg & 0x7f) << VIA_REG_AC97_CMD_SHIFT;
444 while (1) {
445 if (again++ > 3) {
446 snd_printk(KERN_ERR "codec_read: codec %i is not valid [0x%x]\n",
447 ac97->num, snd_via82xx_codec_xread(chip));
448 return 0xffff;
449 }
450 snd_via82xx_codec_xwrite(chip, xval);
451 udelay (20);
452 if (snd_via82xx_codec_valid(chip, ac97->num) >= 0) {
453 udelay(25);
454 val = snd_via82xx_codec_xread(chip);
455 break;
456 }
457 }
458 return val & 0xffff;
459 }
460
461 static void snd_via82xx_channel_reset(struct via82xx_modem *chip, struct viadev *viadev)
462 {
463 outb(VIA_REG_CTRL_PAUSE | VIA_REG_CTRL_TERMINATE | VIA_REG_CTRL_RESET,
464 VIADEV_REG(viadev, OFFSET_CONTROL));
465 inb(VIADEV_REG(viadev, OFFSET_CONTROL));
466 udelay(50);
467 /* disable interrupts */
468 outb(0x00, VIADEV_REG(viadev, OFFSET_CONTROL));
469 /* clear interrupts */
470 outb(0x03, VIADEV_REG(viadev, OFFSET_STATUS));
471 outb(0x00, VIADEV_REG(viadev, OFFSET_TYPE)); /* for via686 */
472 // outl(0, VIADEV_REG(viadev, OFFSET_CURR_PTR));
473 viadev->lastpos = 0;
474 }
475
476
477 /*
478 * Interrupt handler
479 */
480
481 static irqreturn_t snd_via82xx_interrupt(int irq, void *dev_id)
482 {
483 struct via82xx_modem *chip = dev_id;
484 unsigned int status;
485 unsigned int i;
486
487 status = inl(VIAREG(chip, SGD_SHADOW));
488 if (! (status & chip->intr_mask)) {
489 return IRQ_NONE;
490 }
491 // _skip_sgd:
492
493 /* check status for each stream */
494 spin_lock(&chip->reg_lock);
495 for (i = 0; i < chip->num_devs; i++) {
496 struct viadev *viadev = &chip->devs[i];
497 unsigned char c_status = inb(VIADEV_REG(viadev, OFFSET_STATUS));
498 c_status &= (VIA_REG_STAT_EOL|VIA_REG_STAT_FLAG|VIA_REG_STAT_STOPPED);
499 if (! c_status)
500 continue;
501 if (viadev->substream && viadev->running) {
502 spin_unlock(&chip->reg_lock);
503 snd_pcm_period_elapsed(viadev->substream);
504 spin_lock(&chip->reg_lock);
505 }
506 outb(c_status, VIADEV_REG(viadev, OFFSET_STATUS)); /* ack */
507 }
508 spin_unlock(&chip->reg_lock);
509 return IRQ_HANDLED;
510 }
511
512 /*
513 * PCM callbacks
514 */
515
516 /*
517 * trigger callback
518 */
519 static int snd_via82xx_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
520 {
521 struct via82xx_modem *chip = snd_pcm_substream_chip(substream);
522 struct viadev *viadev = substream->runtime->private_data;
523 unsigned char val = 0;
524
525 switch (cmd) {
526 case SNDRV_PCM_TRIGGER_START:
527 case SNDRV_PCM_TRIGGER_SUSPEND:
528 val |= VIA_REG_CTRL_START;
529 viadev->running = 1;
530 break;
531 case SNDRV_PCM_TRIGGER_STOP:
532 val = VIA_REG_CTRL_TERMINATE;
533 viadev->running = 0;
534 break;
535 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
536 val |= VIA_REG_CTRL_PAUSE;
537 viadev->running = 0;
538 break;
539 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
540 viadev->running = 1;
541 break;
542 default:
543 return -EINVAL;
544 }
545 outb(val, VIADEV_REG(viadev, OFFSET_CONTROL));
546 if (cmd == SNDRV_PCM_TRIGGER_STOP)
547 snd_via82xx_channel_reset(chip, viadev);
548 return 0;
549 }
550
551 /*
552 * pointer callbacks
553 */
554
555 /*
556 * calculate the linear position at the given sg-buffer index and the rest count
557 */
558
559 #define check_invalid_pos(viadev,pos) \
560 ((pos) < viadev->lastpos && ((pos) >= viadev->bufsize2 ||\
561 viadev->lastpos < viadev->bufsize2))
562
563 static inline unsigned int calc_linear_pos(struct viadev *viadev, unsigned int idx,
564 unsigned int count)
565 {
566 unsigned int size, res;
567
568 size = viadev->idx_table[idx].size;
569 res = viadev->idx_table[idx].offset + size - count;
570
571 /* check the validity of the calculated position */
572 if (size < count) {
573 snd_printd(KERN_ERR "invalid via82xx_cur_ptr (size = %d, count = %d)\n",
574 (int)size, (int)count);
575 res = viadev->lastpos;
576 } else if (check_invalid_pos(viadev, res)) {
577 #ifdef POINTER_DEBUG
578 printk(KERN_DEBUG "fail: idx = %i/%i, lastpos = 0x%x, "
579 "bufsize2 = 0x%x, offsize = 0x%x, size = 0x%x, "
580 "count = 0x%x\n", idx, viadev->tbl_entries, viadev->lastpos,
581 viadev->bufsize2, viadev->idx_table[idx].offset,
582 viadev->idx_table[idx].size, count);
583 #endif
584 if (count && size < count) {
585 snd_printd(KERN_ERR "invalid via82xx_cur_ptr, "
586 "using last valid pointer\n");
587 res = viadev->lastpos;
588 } else {
589 if (! count)
590 /* bogus count 0 on the DMA boundary? */
591 res = viadev->idx_table[idx].offset;
592 else
593 /* count register returns full size
594 * when end of buffer is reached
595 */
596 res = viadev->idx_table[idx].offset + size;
597 if (check_invalid_pos(viadev, res)) {
598 snd_printd(KERN_ERR "invalid via82xx_cur_ptr (2), "
599 "using last valid pointer\n");
600 res = viadev->lastpos;
601 }
602 }
603 }
604 viadev->lastpos = res; /* remember the last position */
605 if (res >= viadev->bufsize)
606 res -= viadev->bufsize;
607 return res;
608 }
609
610 /*
611 * get the current pointer on via686
612 */
613 static snd_pcm_uframes_t snd_via686_pcm_pointer(struct snd_pcm_substream *substream)
614 {
615 struct via82xx_modem *chip = snd_pcm_substream_chip(substream);
616 struct viadev *viadev = substream->runtime->private_data;
617 unsigned int idx, ptr, count, res;
618
619 if (snd_BUG_ON(!viadev->tbl_entries))
620 return 0;
621 if (!(inb(VIADEV_REG(viadev, OFFSET_STATUS)) & VIA_REG_STAT_ACTIVE))
622 return 0;
623
624 spin_lock(&chip->reg_lock);
625 count = inl(VIADEV_REG(viadev, OFFSET_CURR_COUNT)) & 0xffffff;
626 /* The via686a does not have the current index register,
627 * so we need to calculate the index from CURR_PTR.
628 */
629 ptr = inl(VIADEV_REG(viadev, OFFSET_CURR_PTR));
630 if (ptr <= (unsigned int)viadev->table.addr)
631 idx = 0;
632 else /* CURR_PTR holds the address + 8 */
633 idx = ((ptr - (unsigned int)viadev->table.addr) / 8 - 1) %
634 viadev->tbl_entries;
635 res = calc_linear_pos(viadev, idx, count);
636 spin_unlock(&chip->reg_lock);
637
638 return bytes_to_frames(substream->runtime, res);
639 }
640
641 /*
642 * hw_params callback:
643 * allocate the buffer and build up the buffer description table
644 */
645 static int snd_via82xx_hw_params(struct snd_pcm_substream *substream,
646 struct snd_pcm_hw_params *hw_params)
647 {
648 struct via82xx_modem *chip = snd_pcm_substream_chip(substream);
649 struct viadev *viadev = substream->runtime->private_data;
650 int err;
651
652 err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
653 if (err < 0)
654 return err;
655 err = build_via_table(viadev, substream, chip->pci,
656 params_periods(hw_params),
657 params_period_bytes(hw_params));
658 if (err < 0)
659 return err;
660
661 snd_ac97_write(chip->ac97, AC97_LINE1_RATE, params_rate(hw_params));
662 snd_ac97_write(chip->ac97, AC97_LINE1_LEVEL, 0);
663
664 return 0;
665 }
666
667 /*
668 * hw_free callback:
669 * clean up the buffer description table and release the buffer
670 */
671 static int snd_via82xx_hw_free(struct snd_pcm_substream *substream)
672 {
673 struct via82xx_modem *chip = snd_pcm_substream_chip(substream);
674 struct viadev *viadev = substream->runtime->private_data;
675
676 clean_via_table(viadev, substream, chip->pci);
677 snd_pcm_lib_free_pages(substream);
678 return 0;
679 }
680
681
682 /*
683 * set up the table pointer
684 */
685 static void snd_via82xx_set_table_ptr(struct via82xx_modem *chip, struct viadev *viadev)
686 {
687 snd_via82xx_codec_ready(chip, chip->ac97_secondary);
688 outl((u32)viadev->table.addr, VIADEV_REG(viadev, OFFSET_TABLE_PTR));
689 udelay(20);
690 snd_via82xx_codec_ready(chip, chip->ac97_secondary);
691 }
692
693 /*
694 * prepare callback for playback and capture
695 */
696 static int snd_via82xx_pcm_prepare(struct snd_pcm_substream *substream)
697 {
698 struct via82xx_modem *chip = snd_pcm_substream_chip(substream);
699 struct viadev *viadev = substream->runtime->private_data;
700
701 snd_via82xx_channel_reset(chip, viadev);
702 /* this must be set after channel_reset */
703 snd_via82xx_set_table_ptr(chip, viadev);
704 outb(VIA_REG_TYPE_AUTOSTART|VIA_REG_TYPE_INT_EOL|VIA_REG_TYPE_INT_FLAG,
705 VIADEV_REG(viadev, OFFSET_TYPE));
706 return 0;
707 }
708
709 /*
710 * pcm hardware definition, identical for both playback and capture
711 */
712 static struct snd_pcm_hardware snd_via82xx_hw =
713 {
714 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
715 SNDRV_PCM_INFO_BLOCK_TRANSFER |
716 SNDRV_PCM_INFO_MMAP_VALID |
717 /* SNDRV_PCM_INFO_RESUME | */
718 SNDRV_PCM_INFO_PAUSE),
719 .formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE,
720 .rates = SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_KNOT,
721 .rate_min = 8000,
722 .rate_max = 16000,
723 .channels_min = 1,
724 .channels_max = 1,
725 .buffer_bytes_max = 128 * 1024,
726 .period_bytes_min = 32,
727 .period_bytes_max = 128 * 1024,
728 .periods_min = 2,
729 .periods_max = VIA_TABLE_SIZE / 2,
730 .fifo_size = 0,
731 };
732
733
734 /*
735 * open callback skeleton
736 */
737 static int snd_via82xx_modem_pcm_open(struct via82xx_modem *chip, struct viadev *viadev,
738 struct snd_pcm_substream *substream)
739 {
740 struct snd_pcm_runtime *runtime = substream->runtime;
741 int err;
742 static unsigned int rates[] = { 8000, 9600, 12000, 16000 };
743 static struct snd_pcm_hw_constraint_list hw_constraints_rates = {
744 .count = ARRAY_SIZE(rates),
745 .list = rates,
746 .mask = 0,
747 };
748
749 runtime->hw = snd_via82xx_hw;
750
751 if ((err = snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
752 &hw_constraints_rates)) < 0)
753 return err;
754
755 /* we may remove following constaint when we modify table entries
756 in interrupt */
757 if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
758 return err;
759
760 runtime->private_data = viadev;
761 viadev->substream = substream;
762
763 return 0;
764 }
765
766
767 /*
768 * open callback for playback
769 */
770 static int snd_via82xx_playback_open(struct snd_pcm_substream *substream)
771 {
772 struct via82xx_modem *chip = snd_pcm_substream_chip(substream);
773 struct viadev *viadev = &chip->devs[chip->playback_devno + substream->number];
774
775 return snd_via82xx_modem_pcm_open(chip, viadev, substream);
776 }
777
778 /*
779 * open callback for capture
780 */
781 static int snd_via82xx_capture_open(struct snd_pcm_substream *substream)
782 {
783 struct via82xx_modem *chip = snd_pcm_substream_chip(substream);
784 struct viadev *viadev = &chip->devs[chip->capture_devno + substream->pcm->device];
785
786 return snd_via82xx_modem_pcm_open(chip, viadev, substream);
787 }
788
789 /*
790 * close callback
791 */
792 static int snd_via82xx_pcm_close(struct snd_pcm_substream *substream)
793 {
794 struct viadev *viadev = substream->runtime->private_data;
795
796 viadev->substream = NULL;
797 return 0;
798 }
799
800
801 /* via686 playback callbacks */
802 static struct snd_pcm_ops snd_via686_playback_ops = {
803 .open = snd_via82xx_playback_open,
804 .close = snd_via82xx_pcm_close,
805 .ioctl = snd_pcm_lib_ioctl,
806 .hw_params = snd_via82xx_hw_params,
807 .hw_free = snd_via82xx_hw_free,
808 .prepare = snd_via82xx_pcm_prepare,
809 .trigger = snd_via82xx_pcm_trigger,
810 .pointer = snd_via686_pcm_pointer,
811 .page = snd_pcm_sgbuf_ops_page,
812 };
813
814 /* via686 capture callbacks */
815 static struct snd_pcm_ops snd_via686_capture_ops = {
816 .open = snd_via82xx_capture_open,
817 .close = snd_via82xx_pcm_close,
818 .ioctl = snd_pcm_lib_ioctl,
819 .hw_params = snd_via82xx_hw_params,
820 .hw_free = snd_via82xx_hw_free,
821 .prepare = snd_via82xx_pcm_prepare,
822 .trigger = snd_via82xx_pcm_trigger,
823 .pointer = snd_via686_pcm_pointer,
824 .page = snd_pcm_sgbuf_ops_page,
825 };
826
827
828 static void init_viadev(struct via82xx_modem *chip, int idx, unsigned int reg_offset,
829 int direction)
830 {
831 chip->devs[idx].reg_offset = reg_offset;
832 chip->devs[idx].direction = direction;
833 chip->devs[idx].port = chip->port + reg_offset;
834 }
835
836 /*
837 * create a pcm instance for via686a/b
838 */
839 static int __devinit snd_via686_pcm_new(struct via82xx_modem *chip)
840 {
841 struct snd_pcm *pcm;
842 int err;
843
844 chip->playback_devno = 0;
845 chip->capture_devno = 1;
846 chip->num_devs = 2;
847 chip->intr_mask = 0x330000; /* FLAGS | EOL for MR, MW */
848
849 err = snd_pcm_new(chip->card, chip->card->shortname, 0, 1, 1, &pcm);
850 if (err < 0)
851 return err;
852 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via686_playback_ops);
853 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via686_capture_ops);
854 pcm->dev_class = SNDRV_PCM_CLASS_MODEM;
855 pcm->private_data = chip;
856 strcpy(pcm->name, chip->card->shortname);
857 chip->pcms[0] = pcm;
858 init_viadev(chip, 0, VIA_REG_MO_STATUS, 0);
859 init_viadev(chip, 1, VIA_REG_MI_STATUS, 1);
860
861 if ((err = snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
862 snd_dma_pci_data(chip->pci),
863 64*1024, 128*1024)) < 0)
864 return err;
865
866 return 0;
867 }
868
869
870 /*
871 * Mixer part
872 */
873
874
875 static void snd_via82xx_mixer_free_ac97_bus(struct snd_ac97_bus *bus)
876 {
877 struct via82xx_modem *chip = bus->private_data;
878 chip->ac97_bus = NULL;
879 }
880
881 static void snd_via82xx_mixer_free_ac97(struct snd_ac97 *ac97)
882 {
883 struct via82xx_modem *chip = ac97->private_data;
884 chip->ac97 = NULL;
885 }
886
887
888 static int __devinit snd_via82xx_mixer_new(struct via82xx_modem *chip)
889 {
890 struct snd_ac97_template ac97;
891 int err;
892 static struct snd_ac97_bus_ops ops = {
893 .write = snd_via82xx_codec_write,
894 .read = snd_via82xx_codec_read,
895 .wait = snd_via82xx_codec_wait,
896 };
897
898 if ((err = snd_ac97_bus(chip->card, 0, &ops, chip, &chip->ac97_bus)) < 0)
899 return err;
900 chip->ac97_bus->private_free = snd_via82xx_mixer_free_ac97_bus;
901 chip->ac97_bus->clock = chip->ac97_clock;
902
903 memset(&ac97, 0, sizeof(ac97));
904 ac97.private_data = chip;
905 ac97.private_free = snd_via82xx_mixer_free_ac97;
906 ac97.pci = chip->pci;
907 ac97.scaps = AC97_SCAP_SKIP_AUDIO | AC97_SCAP_POWER_SAVE;
908 ac97.num = chip->ac97_secondary;
909
910 if ((err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97)) < 0)
911 return err;
912
913 return 0;
914 }
915
916
917 /*
918 * proc interface
919 */
920 static void snd_via82xx_proc_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer)
921 {
922 struct via82xx_modem *chip = entry->private_data;
923 int i;
924
925 snd_iprintf(buffer, "%s\n\n", chip->card->longname);
926 for (i = 0; i < 0xa0; i += 4) {
927 snd_iprintf(buffer, "%02x: %08x\n", i, inl(chip->port + i));
928 }
929 }
930
931 static void __devinit snd_via82xx_proc_init(struct via82xx_modem *chip)
932 {
933 struct snd_info_entry *entry;
934
935 if (! snd_card_proc_new(chip->card, "via82xx", &entry))
936 snd_info_set_text_ops(entry, chip, snd_via82xx_proc_read);
937 }
938
939 /*
940 *
941 */
942
943 static int snd_via82xx_chip_init(struct via82xx_modem *chip)
944 {
945 unsigned int val;
946 unsigned long end_time;
947 unsigned char pval;
948
949 pci_read_config_byte(chip->pci, VIA_MC97_CTRL, &pval);
950 if((pval & VIA_MC97_CTRL_INIT) != VIA_MC97_CTRL_INIT) {
951 pci_write_config_byte(chip->pci, 0x44, pval|VIA_MC97_CTRL_INIT);
952 udelay(100);
953 }
954
955 pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval);
956 if (! (pval & VIA_ACLINK_C00_READY)) { /* codec not ready? */
957 /* deassert ACLink reset, force SYNC */
958 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL,
959 VIA_ACLINK_CTRL_ENABLE |
960 VIA_ACLINK_CTRL_RESET |
961 VIA_ACLINK_CTRL_SYNC);
962 udelay(100);
963 #if 1 /* FIXME: should we do full reset here for all chip models? */
964 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, 0x00);
965 udelay(100);
966 #else
967 /* deassert ACLink reset, force SYNC (warm AC'97 reset) */
968 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL,
969 VIA_ACLINK_CTRL_RESET|VIA_ACLINK_CTRL_SYNC);
970 udelay(2);
971 #endif
972 /* ACLink on, deassert ACLink reset, VSR, SGD data out */
973 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT);
974 udelay(100);
975 }
976
977 pci_read_config_byte(chip->pci, VIA_ACLINK_CTRL, &pval);
978 if ((pval & VIA_ACLINK_CTRL_INIT) != VIA_ACLINK_CTRL_INIT) {
979 /* ACLink on, deassert ACLink reset, VSR, SGD data out */
980 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT);
981 udelay(100);
982 }
983
984 /* wait until codec ready */
985 end_time = jiffies + msecs_to_jiffies(750);
986 do {
987 pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval);
988 if (pval & VIA_ACLINK_C00_READY) /* primary codec ready */
989 break;
990 schedule_timeout_uninterruptible(1);
991 } while (time_before(jiffies, end_time));
992
993 if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY)
994 snd_printk(KERN_ERR "AC'97 codec is not ready [0x%x]\n", val);
995
996 snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ |
997 VIA_REG_AC97_SECONDARY_VALID |
998 (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT));
999 end_time = jiffies + msecs_to_jiffies(750);
1000 snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ |
1001 VIA_REG_AC97_SECONDARY_VALID |
1002 (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT));
1003 do {
1004 if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_SECONDARY_VALID) {
1005 chip->ac97_secondary = 1;
1006 goto __ac97_ok2;
1007 }
1008 schedule_timeout_uninterruptible(1);
1009 } while (time_before(jiffies, end_time));
1010 /* This is ok, the most of motherboards have only one codec */
1011
1012 __ac97_ok2:
1013
1014 /* route FM trap to IRQ, disable FM trap */
1015 // pci_write_config_byte(chip->pci, VIA_FM_NMI_CTRL, 0);
1016 /* disable all GPI interrupts */
1017 outl(0, VIAREG(chip, GPI_INTR));
1018
1019 return 0;
1020 }
1021
1022 #ifdef CONFIG_PM
1023 /*
1024 * power management
1025 */
1026 static int snd_via82xx_suspend(struct pci_dev *pci, pm_message_t state)
1027 {
1028 struct snd_card *card = pci_get_drvdata(pci);
1029 struct via82xx_modem *chip = card->private_data;
1030 int i;
1031
1032 snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
1033 for (i = 0; i < 2; i++)
1034 snd_pcm_suspend_all(chip->pcms[i]);
1035 for (i = 0; i < chip->num_devs; i++)
1036 snd_via82xx_channel_reset(chip, &chip->devs[i]);
1037 synchronize_irq(chip->irq);
1038 snd_ac97_suspend(chip->ac97);
1039
1040 pci_disable_device(pci);
1041 pci_save_state(pci);
1042 pci_set_power_state(pci, pci_choose_state(pci, state));
1043 return 0;
1044 }
1045
1046 static int snd_via82xx_resume(struct pci_dev *pci)
1047 {
1048 struct snd_card *card = pci_get_drvdata(pci);
1049 struct via82xx_modem *chip = card->private_data;
1050 int i;
1051
1052 pci_set_power_state(pci, PCI_D0);
1053 pci_restore_state(pci);
1054 if (pci_enable_device(pci) < 0) {
1055 printk(KERN_ERR "via82xx-modem: pci_enable_device failed, "
1056 "disabling device\n");
1057 snd_card_disconnect(card);
1058 return -EIO;
1059 }
1060 pci_set_master(pci);
1061
1062 snd_via82xx_chip_init(chip);
1063
1064 snd_ac97_resume(chip->ac97);
1065
1066 for (i = 0; i < chip->num_devs; i++)
1067 snd_via82xx_channel_reset(chip, &chip->devs[i]);
1068
1069 snd_power_change_state(card, SNDRV_CTL_POWER_D0);
1070 return 0;
1071 }
1072 #endif /* CONFIG_PM */
1073
1074 static int snd_via82xx_free(struct via82xx_modem *chip)
1075 {
1076 unsigned int i;
1077
1078 if (chip->irq < 0)
1079 goto __end_hw;
1080 /* disable interrupts */
1081 for (i = 0; i < chip->num_devs; i++)
1082 snd_via82xx_channel_reset(chip, &chip->devs[i]);
1083
1084 __end_hw:
1085 if (chip->irq >= 0)
1086 free_irq(chip->irq, chip);
1087 pci_release_regions(chip->pci);
1088 pci_disable_device(chip->pci);
1089 kfree(chip);
1090 return 0;
1091 }
1092
1093 static int snd_via82xx_dev_free(struct snd_device *device)
1094 {
1095 struct via82xx_modem *chip = device->device_data;
1096 return snd_via82xx_free(chip);
1097 }
1098
1099 static int __devinit snd_via82xx_create(struct snd_card *card,
1100 struct pci_dev *pci,
1101 int chip_type,
1102 int revision,
1103 unsigned int ac97_clock,
1104 struct via82xx_modem ** r_via)
1105 {
1106 struct via82xx_modem *chip;
1107 int err;
1108 static struct snd_device_ops ops = {
1109 .dev_free = snd_via82xx_dev_free,
1110 };
1111
1112 if ((err = pci_enable_device(pci)) < 0)
1113 return err;
1114
1115 if ((chip = kzalloc(sizeof(*chip), GFP_KERNEL)) == NULL) {
1116 pci_disable_device(pci);
1117 return -ENOMEM;
1118 }
1119
1120 spin_lock_init(&chip->reg_lock);
1121 chip->card = card;
1122 chip->pci = pci;
1123 chip->irq = -1;
1124
1125 if ((err = pci_request_regions(pci, card->driver)) < 0) {
1126 kfree(chip);
1127 pci_disable_device(pci);
1128 return err;
1129 }
1130 chip->port = pci_resource_start(pci, 0);
1131 if (request_irq(pci->irq, snd_via82xx_interrupt, IRQF_SHARED,
1132 card->driver, chip)) {
1133 snd_printk(KERN_ERR "unable to grab IRQ %d\n", pci->irq);
1134 snd_via82xx_free(chip);
1135 return -EBUSY;
1136 }
1137 chip->irq = pci->irq;
1138 if (ac97_clock >= 8000 && ac97_clock <= 48000)
1139 chip->ac97_clock = ac97_clock;
1140 synchronize_irq(chip->irq);
1141
1142 if ((err = snd_via82xx_chip_init(chip)) < 0) {
1143 snd_via82xx_free(chip);
1144 return err;
1145 }
1146
1147 if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
1148 snd_via82xx_free(chip);
1149 return err;
1150 }
1151
1152 /* The 8233 ac97 controller does not implement the master bit
1153 * in the pci command register. IMHO this is a violation of the PCI spec.
1154 * We call pci_set_master here because it does not hurt. */
1155 pci_set_master(pci);
1156
1157 snd_card_set_dev(card, &pci->dev);
1158
1159 *r_via = chip;
1160 return 0;
1161 }
1162
1163
1164 static int __devinit snd_via82xx_probe(struct pci_dev *pci,
1165 const struct pci_device_id *pci_id)
1166 {
1167 struct snd_card *card;
1168 struct via82xx_modem *chip;
1169 int chip_type = 0, card_type;
1170 unsigned int i;
1171 int err;
1172
1173 err = snd_card_create(index, id, THIS_MODULE, 0, &card);
1174 if (err < 0)
1175 return err;
1176
1177 card_type = pci_id->driver_data;
1178 switch (card_type) {
1179 case TYPE_CARD_VIA82XX_MODEM:
1180 strcpy(card->driver, "VIA82XX-MODEM");
1181 sprintf(card->shortname, "VIA 82XX modem");
1182 break;
1183 default:
1184 snd_printk(KERN_ERR "invalid card type %d\n", card_type);
1185 err = -EINVAL;
1186 goto __error;
1187 }
1188
1189 if ((err = snd_via82xx_create(card, pci, chip_type, pci->revision,
1190 ac97_clock, &chip)) < 0)
1191 goto __error;
1192 card->private_data = chip;
1193 if ((err = snd_via82xx_mixer_new(chip)) < 0)
1194 goto __error;
1195
1196 if ((err = snd_via686_pcm_new(chip)) < 0 )
1197 goto __error;
1198
1199 /* disable interrupts */
1200 for (i = 0; i < chip->num_devs; i++)
1201 snd_via82xx_channel_reset(chip, &chip->devs[i]);
1202
1203 sprintf(card->longname, "%s at 0x%lx, irq %d",
1204 card->shortname, chip->port, chip->irq);
1205
1206 snd_via82xx_proc_init(chip);
1207
1208 if ((err = snd_card_register(card)) < 0) {
1209 snd_card_free(card);
1210 return err;
1211 }
1212 pci_set_drvdata(pci, card);
1213 return 0;
1214
1215 __error:
1216 snd_card_free(card);
1217 return err;
1218 }
1219
1220 static void __devexit snd_via82xx_remove(struct pci_dev *pci)
1221 {
1222 snd_card_free(pci_get_drvdata(pci));
1223 pci_set_drvdata(pci, NULL);
1224 }
1225
1226 static struct pci_driver driver = {
1227 .name = "VIA 82xx Modem",
1228 .id_table = snd_via82xx_modem_ids,
1229 .probe = snd_via82xx_probe,
1230 .remove = __devexit_p(snd_via82xx_remove),
1231 #ifdef CONFIG_PM
1232 .suspend = snd_via82xx_suspend,
1233 .resume = snd_via82xx_resume,
1234 #endif
1235 };
1236
1237 static int __init alsa_card_via82xx_init(void)
1238 {
1239 return pci_register_driver(&driver);
1240 }
1241
1242 static void __exit alsa_card_via82xx_exit(void)
1243 {
1244 pci_unregister_driver(&driver);
1245 }
1246
1247 module_init(alsa_card_via82xx_init)
1248 module_exit(alsa_card_via82xx_exit)
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree