?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
[PATCH] Fix dst_destroy() race
[linux-2.6.22.y-op.git] / sound / pci / via82xx_modem.c
blobea5c6f6401593fc150b8dfcc1236f6d012eb5fdd
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@suse.cz>
7 * Tjeerd.Mulder <Tjeerd.Mulder@fujitsu-siemens.com>
8 * 2002 Takashi Iwai <tiwai@suse.de>
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 *
24 */
25
26 /*
27 * Changes:
28 *
29 * Sep. 2, 2004 Sasha Khapyorsky <sashak@smlink.com>
30 * Modified from original audio driver 'via82xx.c' to support AC97
31 * modems.
32 */
33
34 #include <sound/driver.h>
35 #include <asm/io.h>
36 #include <linux/delay.h>
37 #include <linux/interrupt.h>
38 #include <linux/init.h>
39 #include <linux/pci.h>
40 #include <linux/slab.h>
41 #include <linux/moduleparam.h>
42 #include <sound/core.h>
43 #include <sound/pcm.h>
44 #include <sound/pcm_params.h>
45 #include <sound/info.h>
46 #include <sound/ac97_codec.h>
47 #include <sound/initval.h>
48
49 #if 0
50 #define POINTER_DEBUG
51 #endif
52
53 MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>");
54 MODULE_DESCRIPTION("VIA VT82xx modem");
55 MODULE_LICENSE("GPL");
56 MODULE_SUPPORTED_DEVICE("{{VIA,VT82C686A/B/C modem,pci}}");
57
58 static int index[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = -2}; /* Exclude the first card */
59 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */
60 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; /* Enable this card */
61 static int ac97_clock[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 48000};
62
63 module_param_array(index, int, NULL, 0444);
64 MODULE_PARM_DESC(index, "Index value for VIA 82xx bridge.");
65 module_param_array(id, charp, NULL, 0444);
66 MODULE_PARM_DESC(id, "ID string for VIA 82xx bridge.");
67 module_param_array(enable, bool, NULL, 0444);
68 MODULE_PARM_DESC(enable, "Enable modem part of VIA 82xx bridge.");
69 module_param_array(ac97_clock, int, NULL, 0444);
70 MODULE_PARM_DESC(ac97_clock, "AC'97 codec clock (default 48000Hz).");
71
72
73 /*
74 * Direct registers
75 */
76
77 #define VIAREG(via, x) ((via)->port + VIA_REG_##x)
78 #define VIADEV_REG(viadev, x) ((viadev)->port + VIA_REG_##x)
79
80 /* common offsets */
81 #define VIA_REG_OFFSET_STATUS 0x00 /* byte - channel status */
82 #define VIA_REG_STAT_ACTIVE 0x80 /* RO */
83 #define VIA_REG_STAT_PAUSED 0x40 /* RO */
84 #define VIA_REG_STAT_TRIGGER_QUEUED 0x08 /* RO */
85 #define VIA_REG_STAT_STOPPED 0x04 /* RWC */
86 #define VIA_REG_STAT_EOL 0x02 /* RWC */
87 #define VIA_REG_STAT_FLAG 0x01 /* RWC */
88 #define VIA_REG_OFFSET_CONTROL 0x01 /* byte - channel control */
89 #define VIA_REG_CTRL_START 0x80 /* WO */
90 #define VIA_REG_CTRL_TERMINATE 0x40 /* WO */
91 #define VIA_REG_CTRL_AUTOSTART 0x20
92 #define VIA_REG_CTRL_PAUSE 0x08 /* RW */
93 #define VIA_REG_CTRL_INT_STOP 0x04
94 #define VIA_REG_CTRL_INT_EOL 0x02
95 #define VIA_REG_CTRL_INT_FLAG 0x01
96 #define VIA_REG_CTRL_RESET 0x01 /* RW - probably reset? undocumented */
97 #define VIA_REG_CTRL_INT (VIA_REG_CTRL_INT_FLAG | VIA_REG_CTRL_INT_EOL | VIA_REG_CTRL_AUTOSTART)
98 #define VIA_REG_OFFSET_TYPE 0x02 /* byte - channel type (686 only) */
99 #define VIA_REG_TYPE_AUTOSTART 0x80 /* RW - autostart at EOL */
100 #define VIA_REG_TYPE_16BIT 0x20 /* RW */
101 #define VIA_REG_TYPE_STEREO 0x10 /* RW */
102 #define VIA_REG_TYPE_INT_LLINE 0x00
103 #define VIA_REG_TYPE_INT_LSAMPLE 0x04
104 #define VIA_REG_TYPE_INT_LESSONE 0x08
105 #define VIA_REG_TYPE_INT_MASK 0x0c
106 #define VIA_REG_TYPE_INT_EOL 0x02
107 #define VIA_REG_TYPE_INT_FLAG 0x01
108 #define VIA_REG_OFFSET_TABLE_PTR 0x04 /* dword - channel table pointer */
109 #define VIA_REG_OFFSET_CURR_PTR 0x04 /* dword - channel current pointer */
110 #define VIA_REG_OFFSET_STOP_IDX 0x08 /* dword - stop index, channel type, sample rate */
111 #define VIA_REG_OFFSET_CURR_COUNT 0x0c /* dword - channel current count (24 bit) */
112 #define VIA_REG_OFFSET_CURR_INDEX 0x0f /* byte - channel current index (for via8233 only) */
113
114 #define DEFINE_VIA_REGSET(name,val) \
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 typedef struct _snd_via82xx_modem via82xx_t;
209 typedef struct via_dev viadev_t;
210
211 /*
212 * pcm stream
213 */
214
215 struct snd_via_sg_table {
216 unsigned int offset;
217 unsigned int size;
218 } ;
219
220 #define VIA_TABLE_SIZE 255
221
222 struct via_dev {
223 unsigned int reg_offset;
224 unsigned long port;
225 int direction; /* playback = 0, capture = 1 */
226 snd_pcm_substream_t *substream;
227 int running;
228 unsigned int tbl_entries; /* # descriptors */
229 struct snd_dma_buffer table;
230 struct snd_via_sg_table *idx_table;
231 /* for recovery from the unexpected pointer */
232 unsigned int lastpos;
233 unsigned int bufsize;
234 unsigned int bufsize2;
235 };
236
237 enum { TYPE_CARD_VIA82XX_MODEM = 1 };
238
239 #define VIA_MAX_MODEM_DEVS 2
240
241 struct _snd_via82xx_modem {
242 int irq;
243
244 unsigned long port;
245
246 unsigned int intr_mask; /* SGD_SHADOW mask to check interrupts */
247
248 struct pci_dev *pci;
249 snd_card_t *card;
250
251 unsigned int num_devs;
252 unsigned int playback_devno, capture_devno;
253 viadev_t devs[VIA_MAX_MODEM_DEVS];
254
255 snd_pcm_t *pcms[2];
256
257 ac97_bus_t *ac97_bus;
258 ac97_t *ac97;
259 unsigned int ac97_clock;
260 unsigned int ac97_secondary; /* secondary AC'97 codec is present */
261
262 spinlock_t reg_lock;
263 snd_info_entry_t *proc_entry;
264 };
265
266 static struct pci_device_id snd_via82xx_modem_ids[] = {
267 { 0x1106, 0x3068, PCI_ANY_ID, PCI_ANY_ID, 0, 0, TYPE_CARD_VIA82XX_MODEM, },
268 { 0, }
269 };
270
271 MODULE_DEVICE_TABLE(pci, snd_via82xx_modem_ids);
272
273 /*
274 */
275
276 /*
277 * allocate and initialize the descriptor buffers
278 * periods = number of periods
279 * fragsize = period size in bytes
280 */
281 static int build_via_table(viadev_t *dev, snd_pcm_substream_t *substream,
282 struct pci_dev *pci,
283 unsigned int periods, unsigned int fragsize)
284 {
285 unsigned int i, idx, ofs, rest;
286 via82xx_t *chip = snd_pcm_substream_chip(substream);
287 struct snd_sg_buf *sgbuf = snd_pcm_substream_sgbuf(substream);
288
289 if (dev->table.area == NULL) {
290 /* the start of each lists must be aligned to 8 bytes,
291 * but the kernel pages are much bigger, so we don't care
292 */
293 if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(chip->pci),
294 PAGE_ALIGN(VIA_TABLE_SIZE * 2 * 8),
295 &dev->table) < 0)
296 return -ENOMEM;
297 }
298 if (! dev->idx_table) {
299 dev->idx_table = kmalloc(sizeof(*dev->idx_table) * VIA_TABLE_SIZE, GFP_KERNEL);
300 if (! dev->idx_table)
301 return -ENOMEM;
302 }
303
304 /* fill the entries */
305 idx = 0;
306 ofs = 0;
307 for (i = 0; i < periods; i++) {
308 rest = fragsize;
309 /* fill descriptors for a period.
310 * a period can be split to several descriptors if it's
311 * over page boundary.
312 */
313 do {
314 unsigned int r;
315 unsigned int flag;
316
317 if (idx >= VIA_TABLE_SIZE) {
318 snd_printk(KERN_ERR "via82xx: too much table size!\n");
319 return -EINVAL;
320 }
321 ((u32 *)dev->table.area)[idx << 1] = cpu_to_le32((u32)snd_pcm_sgbuf_get_addr(sgbuf, ofs));
322 r = PAGE_SIZE - (ofs % PAGE_SIZE);
323 if (rest < r)
324 r = rest;
325 rest -= r;
326 if (! rest) {
327 if (i == periods - 1)
328 flag = VIA_TBL_BIT_EOL; /* buffer boundary */
329 else
330 flag = VIA_TBL_BIT_FLAG; /* period boundary */
331 } else
332 flag = 0; /* period continues to the next */
333 // printk("via: tbl %d: at %d size %d (rest %d)\n", idx, ofs, r, rest);
334 ((u32 *)dev->table.area)[(idx<<1) + 1] = cpu_to_le32(r | flag);
335 dev->idx_table[idx].offset = ofs;
336 dev->idx_table[idx].size = r;
337 ofs += r;
338 idx++;
339 } while (rest > 0);
340 }
341 dev->tbl_entries = idx;
342 dev->bufsize = periods * fragsize;
343 dev->bufsize2 = dev->bufsize / 2;
344 return 0;
345 }
346
347
348 static int clean_via_table(viadev_t *dev, snd_pcm_substream_t *substream,
349 struct pci_dev *pci)
350 {
351 if (dev->table.area) {
352 snd_dma_free_pages(&dev->table);
353 dev->table.area = NULL;
354 }
355 if (dev->idx_table) {
356 kfree(dev->idx_table);
357 dev->idx_table = NULL;
358 }
359 return 0;
360 }
361
362 /*
363 * Basic I/O
364 */
365
366 static inline unsigned int snd_via82xx_codec_xread(via82xx_t *chip)
367 {
368 return inl(VIAREG(chip, AC97));
369 }
370
371 static inline void snd_via82xx_codec_xwrite(via82xx_t *chip, unsigned int val)
372 {
373 outl(val, VIAREG(chip, AC97));
374 }
375
376 static int snd_via82xx_codec_ready(via82xx_t *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 snd_printk(KERN_ERR "codec_ready: codec %i is not ready [0x%x]\n", secondary, snd_via82xx_codec_xread(chip));
387 return -EIO;
388 }
389
390 static int snd_via82xx_codec_valid(via82xx_t *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(ac97_t *ac97)
408 {
409 via82xx_t *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 set_current_state(TASK_UNINTERRUPTIBLE);
414 schedule_timeout(HZ/2);
415 }
416
417 static void snd_via82xx_codec_write(ac97_t *ac97,
418 unsigned short reg,
419 unsigned short val)
420 {
421 via82xx_t *chip = ac97->private_data;
422 unsigned int xval;
423
424 xval = !ac97->num ? VIA_REG_AC97_CODEC_ID_PRIMARY : VIA_REG_AC97_CODEC_ID_SECONDARY;
425 xval <<= VIA_REG_AC97_CODEC_ID_SHIFT;
426 xval |= reg << VIA_REG_AC97_CMD_SHIFT;
427 xval |= val << VIA_REG_AC97_DATA_SHIFT;
428 snd_via82xx_codec_xwrite(chip, xval);
429 snd_via82xx_codec_ready(chip, ac97->num);
430 }
431
432 static unsigned short snd_via82xx_codec_read(ac97_t *ac97, unsigned short reg)
433 {
434 via82xx_t *chip = ac97->private_data;
435 unsigned int xval, val = 0xffff;
436 int again = 0;
437
438 xval = ac97->num << VIA_REG_AC97_CODEC_ID_SHIFT;
439 xval |= ac97->num ? VIA_REG_AC97_SECONDARY_VALID : VIA_REG_AC97_PRIMARY_VALID;
440 xval |= VIA_REG_AC97_READ;
441 xval |= (reg & 0x7f) << VIA_REG_AC97_CMD_SHIFT;
442 while (1) {
443 if (again++ > 3) {
444 snd_printk(KERN_ERR "codec_read: codec %i is not valid [0x%x]\n", ac97->num, snd_via82xx_codec_xread(chip));
445 return 0xffff;
446 }
447 snd_via82xx_codec_xwrite(chip, xval);
448 udelay (20);
449 if (snd_via82xx_codec_valid(chip, ac97->num) >= 0) {
450 udelay(25);
451 val = snd_via82xx_codec_xread(chip);
452 break;
453 }
454 }
455 return val & 0xffff;
456 }
457
458 static void snd_via82xx_channel_reset(via82xx_t *chip, viadev_t *viadev)
459 {
460 outb(VIA_REG_CTRL_PAUSE | VIA_REG_CTRL_TERMINATE | VIA_REG_CTRL_RESET,
461 VIADEV_REG(viadev, OFFSET_CONTROL));
462 inb(VIADEV_REG(viadev, OFFSET_CONTROL));
463 udelay(50);
464 /* disable interrupts */
465 outb(0x00, VIADEV_REG(viadev, OFFSET_CONTROL));
466 /* clear interrupts */
467 outb(0x03, VIADEV_REG(viadev, OFFSET_STATUS));
468 outb(0x00, VIADEV_REG(viadev, OFFSET_TYPE)); /* for via686 */
469 // outl(0, VIADEV_REG(viadev, OFFSET_CURR_PTR));
470 viadev->lastpos = 0;
471 }
472
473
474 /*
475 * Interrupt handler
476 */
477
478 static irqreturn_t snd_via82xx_interrupt(int irq, void *dev_id, struct pt_regs *regs)
479 {
480 via82xx_t *chip = dev_id;
481 unsigned int status;
482 unsigned int i;
483
484 status = inl(VIAREG(chip, SGD_SHADOW));
485 if (! (status & chip->intr_mask)) {
486 return IRQ_NONE;
487 }
488 // _skip_sgd:
489
490 /* check status for each stream */
491 spin_lock(&chip->reg_lock);
492 for (i = 0; i < chip->num_devs; i++) {
493 viadev_t *viadev = &chip->devs[i];
494 unsigned char c_status = inb(VIADEV_REG(viadev, OFFSET_STATUS));
495 c_status &= (VIA_REG_STAT_EOL|VIA_REG_STAT_FLAG|VIA_REG_STAT_STOPPED);
496 if (! c_status)
497 continue;
498 if (viadev->substream && viadev->running) {
499 spin_unlock(&chip->reg_lock);
500 snd_pcm_period_elapsed(viadev->substream);
501 spin_lock(&chip->reg_lock);
502 }
503 outb(c_status, VIADEV_REG(viadev, OFFSET_STATUS)); /* ack */
504 }
505 spin_unlock(&chip->reg_lock);
506 return IRQ_HANDLED;
507 }
508
509 /*
510 * PCM callbacks
511 */
512
513 /*
514 * trigger callback
515 */
516 static int snd_via82xx_pcm_trigger(snd_pcm_substream_t * substream, int cmd)
517 {
518 via82xx_t *chip = snd_pcm_substream_chip(substream);
519 viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
520 unsigned char val = 0;
521
522 switch (cmd) {
523 case SNDRV_PCM_TRIGGER_START:
524 val |= VIA_REG_CTRL_START;
525 viadev->running = 1;
526 break;
527 case SNDRV_PCM_TRIGGER_STOP:
528 val = VIA_REG_CTRL_TERMINATE;
529 viadev->running = 0;
530 break;
531 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
532 val |= VIA_REG_CTRL_PAUSE;
533 viadev->running = 0;
534 break;
535 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
536 viadev->running = 1;
537 break;
538 default:
539 return -EINVAL;
540 }
541 outb(val, VIADEV_REG(viadev, OFFSET_CONTROL));
542 if (cmd == SNDRV_PCM_TRIGGER_STOP)
543 snd_via82xx_channel_reset(chip, viadev);
544 return 0;
545 }
546
547 static int snd_via82xx_modem_pcm_trigger(snd_pcm_substream_t * substream, int cmd)
548 {
549 via82xx_t *chip = snd_pcm_substream_chip(substream);
550 unsigned int val = 0;
551 switch (cmd) {
552 case SNDRV_PCM_TRIGGER_START:
553 val = snd_ac97_read(chip->ac97, AC97_GPIO_STATUS);
554 outl(val|AC97_GPIO_LINE1_OH, VIAREG(chip, GPI_STATUS));
555 break;
556 case SNDRV_PCM_TRIGGER_STOP:
557 val = snd_ac97_read(chip->ac97, AC97_GPIO_STATUS);
558 outl(val&~AC97_GPIO_LINE1_OH, VIAREG(chip, GPI_STATUS));
559 break;
560 default:
561 break;
562 }
563 return snd_via82xx_pcm_trigger(substream, cmd);
564 }
565
566 /*
567 * pointer callbacks
568 */
569
570 /*
571 * calculate the linear position at the given sg-buffer index and the rest count
572 */
573
574 #define check_invalid_pos(viadev,pos) \
575 ((pos) < viadev->lastpos && ((pos) >= viadev->bufsize2 || viadev->lastpos < viadev->bufsize2))
576
577 static inline unsigned int calc_linear_pos(viadev_t *viadev, unsigned int idx, unsigned int count)
578 {
579 unsigned int size, res;
580
581 size = viadev->idx_table[idx].size;
582 res = viadev->idx_table[idx].offset + size - count;
583
584 /* check the validity of the calculated position */
585 if (size < count) {
586 snd_printd(KERN_ERR "invalid via82xx_cur_ptr (size = %d, count = %d)\n", (int)size, (int)count);
587 res = viadev->lastpos;
588 } else if (check_invalid_pos(viadev, res)) {
589 #ifdef POINTER_DEBUG
590 printk("fail: idx = %i/%i, lastpos = 0x%x, bufsize2 = 0x%x, offsize = 0x%x, size = 0x%x, count = 0x%x\n", idx, viadev->tbl_entries, viadev->lastpos, viadev->bufsize2, viadev->idx_table[idx].offset, viadev->idx_table[idx].size, count);
591 #endif
592 if (count && size < count) {
593 snd_printd(KERN_ERR "invalid via82xx_cur_ptr, using last valid pointer\n");
594 res = viadev->lastpos;
595 } else {
596 if (! count)
597 /* bogus count 0 on the DMA boundary? */
598 res = viadev->idx_table[idx].offset;
599 else
600 /* count register returns full size when end of buffer is reached */
601 res = viadev->idx_table[idx].offset + size;
602 if (check_invalid_pos(viadev, res)) {
603 snd_printd(KERN_ERR "invalid via82xx_cur_ptr (2), using last valid pointer\n");
604 res = viadev->lastpos;
605 }
606 }
607 }
608 viadev->lastpos = res; /* remember the last position */
609 if (res >= viadev->bufsize)
610 res -= viadev->bufsize;
611 return res;
612 }
613
614 /*
615 * get the current pointer on via686
616 */
617 static snd_pcm_uframes_t snd_via686_pcm_pointer(snd_pcm_substream_t *substream)
618 {
619 via82xx_t *chip = snd_pcm_substream_chip(substream);
620 viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
621 unsigned int idx, ptr, count, res;
622
623 snd_assert(viadev->tbl_entries, return 0);
624 if (!(inb(VIADEV_REG(viadev, OFFSET_STATUS)) & VIA_REG_STAT_ACTIVE))
625 return 0;
626
627 spin_lock(&chip->reg_lock);
628 count = inl(VIADEV_REG(viadev, OFFSET_CURR_COUNT)) & 0xffffff;
629 /* The via686a does not have the current index register,
630 * so we need to calculate the index from CURR_PTR.
631 */
632 ptr = inl(VIADEV_REG(viadev, OFFSET_CURR_PTR));
633 if (ptr <= (unsigned int)viadev->table.addr)
634 idx = 0;
635 else /* CURR_PTR holds the address + 8 */
636 idx = ((ptr - (unsigned int)viadev->table.addr) / 8 - 1) % viadev->tbl_entries;
637 res = calc_linear_pos(viadev, idx, count);
638 spin_unlock(&chip->reg_lock);
639
640 return bytes_to_frames(substream->runtime, res);
641 }
642
643 /*
644 * hw_params callback:
645 * allocate the buffer and build up the buffer description table
646 */
647 static int snd_via82xx_hw_params(snd_pcm_substream_t * substream,
648 snd_pcm_hw_params_t * hw_params)
649 {
650 via82xx_t *chip = snd_pcm_substream_chip(substream);
651 viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
652 int err;
653
654 err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
655 if (err < 0)
656 return err;
657 err = build_via_table(viadev, substream, chip->pci,
658 params_periods(hw_params),
659 params_period_bytes(hw_params));
660 if (err < 0)
661 return err;
662
663 snd_ac97_write(chip->ac97, AC97_LINE1_RATE, params_rate(hw_params));
664 snd_ac97_write(chip->ac97, AC97_LINE1_LEVEL, 0);
665
666 return 0;
667 }
668
669 /*
670 * hw_free callback:
671 * clean up the buffer description table and release the buffer
672 */
673 static int snd_via82xx_hw_free(snd_pcm_substream_t * substream)
674 {
675 via82xx_t *chip = snd_pcm_substream_chip(substream);
676 viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
677
678 clean_via_table(viadev, substream, chip->pci);
679 snd_pcm_lib_free_pages(substream);
680 return 0;
681 }
682
683
684 /*
685 * set up the table pointer
686 */
687 static void snd_via82xx_set_table_ptr(via82xx_t *chip, viadev_t *viadev)
688 {
689 snd_via82xx_codec_ready(chip, chip->ac97_secondary);
690 outl((u32)viadev->table.addr, VIADEV_REG(viadev, OFFSET_TABLE_PTR));
691 udelay(20);
692 snd_via82xx_codec_ready(chip, chip->ac97_secondary);
693 }
694
695 /*
696 * prepare callback for playback and capture
697 */
698 static int snd_via82xx_pcm_prepare(snd_pcm_substream_t *substream)
699 {
700 via82xx_t *chip = snd_pcm_substream_chip(substream);
701 viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
702
703 snd_via82xx_channel_reset(chip, viadev);
704 /* this must be set after channel_reset */
705 snd_via82xx_set_table_ptr(chip, viadev);
706 outb(VIA_REG_TYPE_AUTOSTART|VIA_REG_TYPE_INT_EOL|VIA_REG_TYPE_INT_FLAG,
707 VIADEV_REG(viadev, OFFSET_TYPE));
708 return 0;
709 }
710
711 /*
712 * pcm hardware definition, identical for both playback and capture
713 */
714 static snd_pcm_hardware_t snd_via82xx_hw =
715 {
716 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
717 SNDRV_PCM_INFO_BLOCK_TRANSFER |
718 SNDRV_PCM_INFO_MMAP_VALID |
719 SNDRV_PCM_INFO_RESUME |
720 SNDRV_PCM_INFO_PAUSE),
721 .formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE,
722 .rates = SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_KNOT,
723 .rate_min = 8000,
724 .rate_max = 16000,
725 .channels_min = 1,
726 .channels_max = 1,
727 .buffer_bytes_max = 128 * 1024,
728 .period_bytes_min = 32,
729 .period_bytes_max = 128 * 1024,
730 .periods_min = 2,
731 .periods_max = VIA_TABLE_SIZE / 2,
732 .fifo_size = 0,
733 };
734
735
736 /*
737 * open callback skeleton
738 */
739 static int snd_via82xx_modem_pcm_open(via82xx_t *chip, viadev_t *viadev, snd_pcm_substream_t * substream)
740 {
741 snd_pcm_runtime_t *runtime = substream->runtime;
742 int err;
743 static unsigned int rates[] = { 8000, 9600, 12000, 16000 };
744 static snd_pcm_hw_constraint_list_t hw_constraints_rates = {
745 .count = ARRAY_SIZE(rates),
746 .list = rates,
747 .mask = 0,
748 };
749
750 runtime->hw = snd_via82xx_hw;
751
752 if ((err = snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, &hw_constraints_rates)) < 0)
753 return err;
754
755 /* 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(snd_pcm_substream_t * substream)
771 {
772 via82xx_t *chip = snd_pcm_substream_chip(substream);
773 viadev_t *viadev = &chip->devs[chip->playback_devno + substream->number];
774
775 return snd_via82xx_modem_pcm_open(chip, viadev, substream);
776 }
777
778 /*
779 * open callback for capture
780 */
781 static int snd_via82xx_capture_open(snd_pcm_substream_t * substream)
782 {
783 via82xx_t *chip = snd_pcm_substream_chip(substream);
784 viadev_t *viadev = &chip->devs[chip->capture_devno + substream->pcm->device];
785
786 return snd_via82xx_modem_pcm_open(chip, viadev, substream);
787 }
788
789 /*
790 * close callback
791 */
792 static int snd_via82xx_pcm_close(snd_pcm_substream_t * substream)
793 {
794 viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
795
796 viadev->substream = NULL;
797 return 0;
798 }
799
800
801 /* via686 playback callbacks */
802 static snd_pcm_ops_t snd_via686_playback_ops = {
803 .open = snd_via82xx_playback_open,
804 .close = snd_via82xx_pcm_close,
805 .ioctl = snd_pcm_lib_ioctl,
806 .hw_params = snd_via82xx_hw_params,
807 .hw_free = snd_via82xx_hw_free,
808 .prepare = snd_via82xx_pcm_prepare,
809 .trigger = snd_via82xx_modem_pcm_trigger,
810 .pointer = snd_via686_pcm_pointer,
811 .page = snd_pcm_sgbuf_ops_page,
812 };
813
814 /* via686 capture callbacks */
815 static snd_pcm_ops_t snd_via686_capture_ops = {
816 .open = snd_via82xx_capture_open,
817 .close = snd_via82xx_pcm_close,
818 .ioctl = snd_pcm_lib_ioctl,
819 .hw_params = snd_via82xx_hw_params,
820 .hw_free = snd_via82xx_hw_free,
821 .prepare = snd_via82xx_pcm_prepare,
822 .trigger = snd_via82xx_modem_pcm_trigger,
823 .pointer = snd_via686_pcm_pointer,
824 .page = snd_pcm_sgbuf_ops_page,
825 };
826
827
828 static void init_viadev(via82xx_t *chip, int idx, unsigned int reg_offset, int direction)
829 {
830 chip->devs[idx].reg_offset = reg_offset;
831 chip->devs[idx].direction = direction;
832 chip->devs[idx].port = chip->port + reg_offset;
833 }
834
835 /*
836 * create a pcm instance for via686a/b
837 */
838 static int __devinit snd_via686_pcm_new(via82xx_t *chip)
839 {
840 snd_pcm_t *pcm;
841 int err;
842
843 chip->playback_devno = 0;
844 chip->capture_devno = 1;
845 chip->num_devs = 2;
846 chip->intr_mask = 0x330000; /* FLAGS | EOL for MR, MW */
847
848 err = snd_pcm_new(chip->card, chip->card->shortname, 0, 1, 1, &pcm);
849 if (err < 0)
850 return err;
851 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via686_playback_ops);
852 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via686_capture_ops);
853 pcm->private_data = chip;
854 strcpy(pcm->name, chip->card->shortname);
855 chip->pcms[0] = pcm;
856 init_viadev(chip, 0, VIA_REG_MO_STATUS, 0);
857 init_viadev(chip, 1, VIA_REG_MI_STATUS, 1);
858
859 if ((err = snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
860 snd_dma_pci_data(chip->pci), 64*1024, 128*1024)) < 0)
861 return err;
862
863 return 0;
864 }
865
866
867 /*
868 * Mixer part
869 */
870
871
872 static void snd_via82xx_mixer_free_ac97_bus(ac97_bus_t *bus)
873 {
874 via82xx_t *chip = bus->private_data;
875 chip->ac97_bus = NULL;
876 }
877
878 static void snd_via82xx_mixer_free_ac97(ac97_t *ac97)
879 {
880 via82xx_t *chip = ac97->private_data;
881 chip->ac97 = NULL;
882 }
883
884
885 static int __devinit snd_via82xx_mixer_new(via82xx_t *chip)
886 {
887 ac97_template_t ac97;
888 int err;
889 static ac97_bus_ops_t ops = {
890 .write = snd_via82xx_codec_write,
891 .read = snd_via82xx_codec_read,
892 .wait = snd_via82xx_codec_wait,
893 };
894
895 if ((err = snd_ac97_bus(chip->card, 0, &ops, chip, &chip->ac97_bus)) < 0)
896 return err;
897 chip->ac97_bus->private_free = snd_via82xx_mixer_free_ac97_bus;
898 chip->ac97_bus->clock = chip->ac97_clock;
899 chip->ac97_bus->shared_type = AC97_SHARED_TYPE_VIA;
900
901 memset(&ac97, 0, sizeof(ac97));
902 ac97.private_data = chip;
903 ac97.private_free = snd_via82xx_mixer_free_ac97;
904 ac97.pci = chip->pci;
905 ac97.scaps = AC97_SCAP_SKIP_AUDIO;
906 ac97.num = chip->ac97_secondary;
907
908 if ((err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97)) < 0)
909 return err;
910
911 return 0;
912 }
913
914
915 /*
916 * proc interface
917 */
918 static void snd_via82xx_proc_read(snd_info_entry_t *entry, snd_info_buffer_t *buffer)
919 {
920 via82xx_t *chip = entry->private_data;
921 int i;
922
923 snd_iprintf(buffer, "%s\n\n", chip->card->longname);
924 for (i = 0; i < 0xa0; i += 4) {
925 snd_iprintf(buffer, "%02x: %08x\n", i, inl(chip->port + i));
926 }
927 }
928
929 static void __devinit snd_via82xx_proc_init(via82xx_t *chip)
930 {
931 snd_info_entry_t *entry;
932
933 if (! snd_card_proc_new(chip->card, "via82xx", &entry))
934 snd_info_set_text_ops(entry, chip, 1024, snd_via82xx_proc_read);
935 }
936
937 /*
938 *
939 */
940
941 static int __devinit snd_via82xx_chip_init(via82xx_t *chip)
942 {
943 unsigned int val;
944 int max_count;
945 unsigned char pval;
946
947 pci_read_config_byte(chip->pci, VIA_MC97_CTRL, &pval);
948 if((pval & VIA_MC97_CTRL_INIT) != VIA_MC97_CTRL_INIT) {
949 pci_write_config_byte(chip->pci, 0x44, pval|VIA_MC97_CTRL_INIT);
950 udelay(100);
951 }
952
953 pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval);
954 if (! (pval & VIA_ACLINK_C00_READY)) { /* codec not ready? */
955 /* deassert ACLink reset, force SYNC */
956 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL,
957 VIA_ACLINK_CTRL_ENABLE |
958 VIA_ACLINK_CTRL_RESET |
959 VIA_ACLINK_CTRL_SYNC);
960 udelay(100);
961 #if 1 /* FIXME: should we do full reset here for all chip models? */
962 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, 0x00);
963 udelay(100);
964 #else
965 /* deassert ACLink reset, force SYNC (warm AC'97 reset) */
966 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL,
967 VIA_ACLINK_CTRL_RESET|VIA_ACLINK_CTRL_SYNC);
968 udelay(2);
969 #endif
970 /* ACLink on, deassert ACLink reset, VSR, SGD data out */
971 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT);
972 udelay(100);
973 }
974
975 pci_read_config_byte(chip->pci, VIA_ACLINK_CTRL, &pval);
976 if ((pval & VIA_ACLINK_CTRL_INIT) != VIA_ACLINK_CTRL_INIT) {
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 /* wait until codec ready */
983 max_count = ((3 * HZ) / 4) + 1;
984 do {
985 pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval);
986 if (pval & VIA_ACLINK_C00_READY) /* primary codec ready */
987 break;
988 set_current_state(TASK_UNINTERRUPTIBLE);
989 schedule_timeout(1);
990 } while (--max_count > 0);
991
992 if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY)
993 snd_printk("AC'97 codec is not ready [0x%x]\n", val);
994
995 snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ |
996 VIA_REG_AC97_SECONDARY_VALID |
997 (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT));
998 max_count = ((3 * HZ) / 4) + 1;
999 snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ |
1000 VIA_REG_AC97_SECONDARY_VALID |
1001 (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT));
1002 do {
1003 if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_SECONDARY_VALID) {
1004 chip->ac97_secondary = 1;
1005 goto __ac97_ok2;
1006 }
1007 set_current_state(TASK_INTERRUPTIBLE);
1008 schedule_timeout(1);
1009 } while (--max_count > 0);
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(snd_card_t *card, pm_message_t state)
1027 {
1028 via82xx_t *chip = card->pm_private_data;
1029 int i;
1030
1031 for (i = 0; i < 2; i++)
1032 if (chip->pcms[i])
1033 snd_pcm_suspend_all(chip->pcms[i]);
1034 for (i = 0; i < chip->num_devs; i++)
1035 snd_via82xx_channel_reset(chip, &chip->devs[i]);
1036 synchronize_irq(chip->irq);
1037 snd_ac97_suspend(chip->ac97);
1038 pci_set_power_state(chip->pci, 3);
1039 pci_disable_device(chip->pci);
1040 return 0;
1041 }
1042
1043 static int snd_via82xx_resume(snd_card_t *card)
1044 {
1045 via82xx_t *chip = card->pm_private_data;
1046 int i;
1047
1048 pci_enable_device(chip->pci);
1049 pci_set_power_state(chip->pci, 0);
1050 pci_set_master(chip->pci);
1051
1052 snd_via82xx_chip_init(chip);
1053
1054 snd_ac97_resume(chip->ac97);
1055
1056 for (i = 0; i < chip->num_devs; i++)
1057 snd_via82xx_channel_reset(chip, &chip->devs[i]);
1058
1059 return 0;
1060 }
1061 #endif /* CONFIG_PM */
1062
1063 static int snd_via82xx_free(via82xx_t *chip)
1064 {
1065 unsigned int i;
1066
1067 if (chip->irq < 0)
1068 goto __end_hw;
1069 /* disable interrupts */
1070 for (i = 0; i < chip->num_devs; i++)
1071 snd_via82xx_channel_reset(chip, &chip->devs[i]);
1072 synchronize_irq(chip->irq);
1073 __end_hw:
1074 if (chip->irq >= 0)
1075 free_irq(chip->irq, (void *)chip);
1076 pci_release_regions(chip->pci);
1077 pci_disable_device(chip->pci);
1078 kfree(chip);
1079 return 0;
1080 }
1081
1082 static int snd_via82xx_dev_free(snd_device_t *device)
1083 {
1084 via82xx_t *chip = device->device_data;
1085 return snd_via82xx_free(chip);
1086 }
1087
1088 static int __devinit snd_via82xx_create(snd_card_t * card,
1089 struct pci_dev *pci,
1090 int chip_type,
1091 int revision,
1092 unsigned int ac97_clock,
1093 via82xx_t ** r_via)
1094 {
1095 via82xx_t *chip;
1096 int err;
1097 static snd_device_ops_t ops = {
1098 .dev_free = snd_via82xx_dev_free,
1099 };
1100
1101 if ((err = pci_enable_device(pci)) < 0)
1102 return err;
1103
1104 if ((chip = kcalloc(1, sizeof(*chip), GFP_KERNEL)) == NULL) {
1105 pci_disable_device(pci);
1106 return -ENOMEM;
1107 }
1108
1109 spin_lock_init(&chip->reg_lock);
1110 chip->card = card;
1111 chip->pci = pci;
1112 chip->irq = -1;
1113
1114 if ((err = pci_request_regions(pci, card->driver)) < 0) {
1115 kfree(chip);
1116 pci_disable_device(pci);
1117 return err;
1118 }
1119 chip->port = pci_resource_start(pci, 0);
1120 if (request_irq(pci->irq, snd_via82xx_interrupt, SA_INTERRUPT|SA_SHIRQ,
1121 card->driver, (void *)chip)) {
1122 snd_printk("unable to grab IRQ %d\n", pci->irq);
1123 snd_via82xx_free(chip);
1124 return -EBUSY;
1125 }
1126 chip->irq = pci->irq;
1127 if (ac97_clock >= 8000 && ac97_clock <= 48000)
1128 chip->ac97_clock = ac97_clock;
1129 synchronize_irq(chip->irq);
1130
1131 if ((err = snd_via82xx_chip_init(chip)) < 0) {
1132 snd_via82xx_free(chip);
1133 return err;
1134 }
1135
1136 if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
1137 snd_via82xx_free(chip);
1138 return err;
1139 }
1140
1141 /* The 8233 ac97 controller does not implement the master bit
1142 * in the pci command register. IMHO this is a violation of the PCI spec.
1143 * We call pci_set_master here because it does not hurt. */
1144 pci_set_master(pci);
1145
1146 snd_card_set_dev(card, &pci->dev);
1147
1148 *r_via = chip;
1149 return 0;
1150 }
1151
1152
1153 static int __devinit snd_via82xx_probe(struct pci_dev *pci,
1154 const struct pci_device_id *pci_id)
1155 {
1156 static int dev;
1157 snd_card_t *card;
1158 via82xx_t *chip;
1159 unsigned char revision;
1160 int chip_type = 0, card_type;
1161 unsigned int i;
1162 int err;
1163
1164 if (dev >= SNDRV_CARDS)
1165 return -ENODEV;
1166 if (!enable[dev]) {
1167 dev++;
1168 return -ENOENT;
1169 }
1170
1171 card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
1172 if (card == NULL)
1173 return -ENOMEM;
1174
1175 card_type = pci_id->driver_data;
1176 pci_read_config_byte(pci, PCI_REVISION_ID, &revision);
1177 switch (card_type) {
1178 case TYPE_CARD_VIA82XX_MODEM:
1179 strcpy(card->driver, "VIA82XX-MODEM");
1180 sprintf(card->shortname, "VIA 82XX modem");
1181 break;
1182 default:
1183 snd_printk(KERN_ERR "invalid card type %d\n", card_type);
1184 err = -EINVAL;
1185 goto __error;
1186 }
1187
1188 if ((err = snd_via82xx_create(card, pci, chip_type, revision, ac97_clock[dev], &chip)) < 0)
1189 goto __error;
1190 if ((err = snd_via82xx_mixer_new(chip)) < 0)
1191 goto __error;
1192
1193 if ((err = snd_via686_pcm_new(chip)) < 0 )
1194 goto __error;
1195
1196 snd_card_set_pm_callback(card, snd_via82xx_suspend, snd_via82xx_resume, chip);
1197
1198 /* disable interrupts */
1199 for (i = 0; i < chip->num_devs; i++)
1200 snd_via82xx_channel_reset(chip, &chip->devs[i]);
1201
1202 sprintf(card->longname, "%s at 0x%lx, irq %d",
1203 card->shortname, chip->port, chip->irq);
1204
1205 snd_via82xx_proc_init(chip);
1206
1207 if ((err = snd_card_register(card)) < 0) {
1208 snd_card_free(card);
1209 return err;
1210 }
1211 pci_set_drvdata(pci, card);
1212 dev++;
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 SND_PCI_PM_CALLBACKS
1232 };
1233
1234 static int __init alsa_card_via82xx_init(void)
1235 {
1236 return pci_module_init(&driver);
1237 }
1238
1239 static void __exit alsa_card_via82xx_exit(void)
1240 {
1241 pci_unregister_driver(&driver);
1242 }
1243
1244 module_init(alsa_card_via82xx_init)
1245 module_exit(alsa_card_via82xx_exit)
linux v2.6.22.y-op