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[PATCH] dvb: saa7134-dvb must select tda1004x
[linux-ginger.git] / sound / pci / via82xx_modem.c
blob5872d438a04a5f50f4f47aafe5ff3d4cabc9eb58
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 kfree(dev->idx_table);
356 dev->idx_table = NULL;
357 return 0;
358 }
359
360 /*
361 * Basic I/O
362 */
363
364 static inline unsigned int snd_via82xx_codec_xread(via82xx_t *chip)
365 {
366 return inl(VIAREG(chip, AC97));
367 }
368
369 static inline void snd_via82xx_codec_xwrite(via82xx_t *chip, unsigned int val)
370 {
371 outl(val, VIAREG(chip, AC97));
372 }
373
374 static int snd_via82xx_codec_ready(via82xx_t *chip, int secondary)
375 {
376 unsigned int timeout = 1000; /* 1ms */
377 unsigned int val;
378
379 while (timeout-- > 0) {
380 udelay(1);
381 if (!((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY))
382 return val & 0xffff;
383 }
384 snd_printk(KERN_ERR "codec_ready: codec %i is not ready [0x%x]\n", secondary, snd_via82xx_codec_xread(chip));
385 return -EIO;
386 }
387
388 static int snd_via82xx_codec_valid(via82xx_t *chip, int secondary)
389 {
390 unsigned int timeout = 1000; /* 1ms */
391 unsigned int val, val1;
392 unsigned int stat = !secondary ? VIA_REG_AC97_PRIMARY_VALID :
393 VIA_REG_AC97_SECONDARY_VALID;
394
395 while (timeout-- > 0) {
396 val = snd_via82xx_codec_xread(chip);
397 val1 = val & (VIA_REG_AC97_BUSY | stat);
398 if (val1 == stat)
399 return val & 0xffff;
400 udelay(1);
401 }
402 return -EIO;
403 }
404
405 static void snd_via82xx_codec_wait(ac97_t *ac97)
406 {
407 via82xx_t *chip = ac97->private_data;
408 int err;
409 err = snd_via82xx_codec_ready(chip, ac97->num);
410 /* here we need to wait fairly for long time.. */
411 msleep(500);
412 }
413
414 static void snd_via82xx_codec_write(ac97_t *ac97,
415 unsigned short reg,
416 unsigned short val)
417 {
418 via82xx_t *chip = ac97->private_data;
419 unsigned int xval;
420 if(reg == AC97_GPIO_STATUS) {
421 outl(val, VIAREG(chip, GPI_STATUS));
422 return;
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 case SNDRV_PCM_TRIGGER_SUSPEND:
525 val |= VIA_REG_CTRL_START;
526 viadev->running = 1;
527 break;
528 case SNDRV_PCM_TRIGGER_STOP:
529 val = VIA_REG_CTRL_TERMINATE;
530 viadev->running = 0;
531 break;
532 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
533 val |= VIA_REG_CTRL_PAUSE;
534 viadev->running = 0;
535 break;
536 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
537 viadev->running = 1;
538 break;
539 default:
540 return -EINVAL;
541 }
542 outb(val, VIADEV_REG(viadev, OFFSET_CONTROL));
543 if (cmd == SNDRV_PCM_TRIGGER_STOP)
544 snd_via82xx_channel_reset(chip, viadev);
545 return 0;
546 }
547
548 /*
549 * pointer callbacks
550 */
551
552 /*
553 * calculate the linear position at the given sg-buffer index and the rest count
554 */
555
556 #define check_invalid_pos(viadev,pos) \
557 ((pos) < viadev->lastpos && ((pos) >= viadev->bufsize2 || viadev->lastpos < viadev->bufsize2))
558
559 static inline unsigned int calc_linear_pos(viadev_t *viadev, unsigned int idx, unsigned int count)
560 {
561 unsigned int size, res;
562
563 size = viadev->idx_table[idx].size;
564 res = viadev->idx_table[idx].offset + size - count;
565
566 /* check the validity of the calculated position */
567 if (size < count) {
568 snd_printd(KERN_ERR "invalid via82xx_cur_ptr (size = %d, count = %d)\n", (int)size, (int)count);
569 res = viadev->lastpos;
570 } else if (check_invalid_pos(viadev, res)) {
571 #ifdef POINTER_DEBUG
572 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);
573 #endif
574 if (count && size < count) {
575 snd_printd(KERN_ERR "invalid via82xx_cur_ptr, using last valid pointer\n");
576 res = viadev->lastpos;
577 } else {
578 if (! count)
579 /* bogus count 0 on the DMA boundary? */
580 res = viadev->idx_table[idx].offset;
581 else
582 /* count register returns full size when end of buffer is reached */
583 res = viadev->idx_table[idx].offset + size;
584 if (check_invalid_pos(viadev, res)) {
585 snd_printd(KERN_ERR "invalid via82xx_cur_ptr (2), using last valid pointer\n");
586 res = viadev->lastpos;
587 }
588 }
589 }
590 viadev->lastpos = res; /* remember the last position */
591 if (res >= viadev->bufsize)
592 res -= viadev->bufsize;
593 return res;
594 }
595
596 /*
597 * get the current pointer on via686
598 */
599 static snd_pcm_uframes_t snd_via686_pcm_pointer(snd_pcm_substream_t *substream)
600 {
601 via82xx_t *chip = snd_pcm_substream_chip(substream);
602 viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
603 unsigned int idx, ptr, count, res;
604
605 snd_assert(viadev->tbl_entries, return 0);
606 if (!(inb(VIADEV_REG(viadev, OFFSET_STATUS)) & VIA_REG_STAT_ACTIVE))
607 return 0;
608
609 spin_lock(&chip->reg_lock);
610 count = inl(VIADEV_REG(viadev, OFFSET_CURR_COUNT)) & 0xffffff;
611 /* The via686a does not have the current index register,
612 * so we need to calculate the index from CURR_PTR.
613 */
614 ptr = inl(VIADEV_REG(viadev, OFFSET_CURR_PTR));
615 if (ptr <= (unsigned int)viadev->table.addr)
616 idx = 0;
617 else /* CURR_PTR holds the address + 8 */
618 idx = ((ptr - (unsigned int)viadev->table.addr) / 8 - 1) % viadev->tbl_entries;
619 res = calc_linear_pos(viadev, idx, count);
620 spin_unlock(&chip->reg_lock);
621
622 return bytes_to_frames(substream->runtime, res);
623 }
624
625 /*
626 * hw_params callback:
627 * allocate the buffer and build up the buffer description table
628 */
629 static int snd_via82xx_hw_params(snd_pcm_substream_t * substream,
630 snd_pcm_hw_params_t * hw_params)
631 {
632 via82xx_t *chip = snd_pcm_substream_chip(substream);
633 viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
634 int err;
635
636 err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
637 if (err < 0)
638 return err;
639 err = build_via_table(viadev, substream, chip->pci,
640 params_periods(hw_params),
641 params_period_bytes(hw_params));
642 if (err < 0)
643 return err;
644
645 snd_ac97_write(chip->ac97, AC97_LINE1_RATE, params_rate(hw_params));
646 snd_ac97_write(chip->ac97, AC97_LINE1_LEVEL, 0);
647
648 return 0;
649 }
650
651 /*
652 * hw_free callback:
653 * clean up the buffer description table and release the buffer
654 */
655 static int snd_via82xx_hw_free(snd_pcm_substream_t * substream)
656 {
657 via82xx_t *chip = snd_pcm_substream_chip(substream);
658 viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
659
660 clean_via_table(viadev, substream, chip->pci);
661 snd_pcm_lib_free_pages(substream);
662 return 0;
663 }
664
665
666 /*
667 * set up the table pointer
668 */
669 static void snd_via82xx_set_table_ptr(via82xx_t *chip, viadev_t *viadev)
670 {
671 snd_via82xx_codec_ready(chip, chip->ac97_secondary);
672 outl((u32)viadev->table.addr, VIADEV_REG(viadev, OFFSET_TABLE_PTR));
673 udelay(20);
674 snd_via82xx_codec_ready(chip, chip->ac97_secondary);
675 }
676
677 /*
678 * prepare callback for playback and capture
679 */
680 static int snd_via82xx_pcm_prepare(snd_pcm_substream_t *substream)
681 {
682 via82xx_t *chip = snd_pcm_substream_chip(substream);
683 viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
684
685 snd_via82xx_channel_reset(chip, viadev);
686 /* this must be set after channel_reset */
687 snd_via82xx_set_table_ptr(chip, viadev);
688 outb(VIA_REG_TYPE_AUTOSTART|VIA_REG_TYPE_INT_EOL|VIA_REG_TYPE_INT_FLAG,
689 VIADEV_REG(viadev, OFFSET_TYPE));
690 return 0;
691 }
692
693 /*
694 * pcm hardware definition, identical for both playback and capture
695 */
696 static snd_pcm_hardware_t snd_via82xx_hw =
697 {
698 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
699 SNDRV_PCM_INFO_BLOCK_TRANSFER |
700 SNDRV_PCM_INFO_MMAP_VALID |
701 /* SNDRV_PCM_INFO_RESUME | */
702 SNDRV_PCM_INFO_PAUSE),
703 .formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE,
704 .rates = SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_KNOT,
705 .rate_min = 8000,
706 .rate_max = 16000,
707 .channels_min = 1,
708 .channels_max = 1,
709 .buffer_bytes_max = 128 * 1024,
710 .period_bytes_min = 32,
711 .period_bytes_max = 128 * 1024,
712 .periods_min = 2,
713 .periods_max = VIA_TABLE_SIZE / 2,
714 .fifo_size = 0,
715 };
716
717
718 /*
719 * open callback skeleton
720 */
721 static int snd_via82xx_modem_pcm_open(via82xx_t *chip, viadev_t *viadev, snd_pcm_substream_t * substream)
722 {
723 snd_pcm_runtime_t *runtime = substream->runtime;
724 int err;
725 static unsigned int rates[] = { 8000, 9600, 12000, 16000 };
726 static snd_pcm_hw_constraint_list_t hw_constraints_rates = {
727 .count = ARRAY_SIZE(rates),
728 .list = rates,
729 .mask = 0,
730 };
731
732 runtime->hw = snd_via82xx_hw;
733
734 if ((err = snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, &hw_constraints_rates)) < 0)
735 return err;
736
737 /* we may remove following constaint when we modify table entries
738 in interrupt */
739 if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
740 return err;
741
742 runtime->private_data = viadev;
743 viadev->substream = substream;
744
745 return 0;
746 }
747
748
749 /*
750 * open callback for playback
751 */
752 static int snd_via82xx_playback_open(snd_pcm_substream_t * substream)
753 {
754 via82xx_t *chip = snd_pcm_substream_chip(substream);
755 viadev_t *viadev = &chip->devs[chip->playback_devno + substream->number];
756
757 return snd_via82xx_modem_pcm_open(chip, viadev, substream);
758 }
759
760 /*
761 * open callback for capture
762 */
763 static int snd_via82xx_capture_open(snd_pcm_substream_t * substream)
764 {
765 via82xx_t *chip = snd_pcm_substream_chip(substream);
766 viadev_t *viadev = &chip->devs[chip->capture_devno + substream->pcm->device];
767
768 return snd_via82xx_modem_pcm_open(chip, viadev, substream);
769 }
770
771 /*
772 * close callback
773 */
774 static int snd_via82xx_pcm_close(snd_pcm_substream_t * substream)
775 {
776 viadev_t *viadev = (viadev_t *)substream->runtime->private_data;
777
778 viadev->substream = NULL;
779 return 0;
780 }
781
782
783 /* via686 playback callbacks */
784 static snd_pcm_ops_t snd_via686_playback_ops = {
785 .open = snd_via82xx_playback_open,
786 .close = snd_via82xx_pcm_close,
787 .ioctl = snd_pcm_lib_ioctl,
788 .hw_params = snd_via82xx_hw_params,
789 .hw_free = snd_via82xx_hw_free,
790 .prepare = snd_via82xx_pcm_prepare,
791 .trigger = snd_via82xx_pcm_trigger,
792 .pointer = snd_via686_pcm_pointer,
793 .page = snd_pcm_sgbuf_ops_page,
794 };
795
796 /* via686 capture callbacks */
797 static snd_pcm_ops_t snd_via686_capture_ops = {
798 .open = snd_via82xx_capture_open,
799 .close = snd_via82xx_pcm_close,
800 .ioctl = snd_pcm_lib_ioctl,
801 .hw_params = snd_via82xx_hw_params,
802 .hw_free = snd_via82xx_hw_free,
803 .prepare = snd_via82xx_pcm_prepare,
804 .trigger = snd_via82xx_pcm_trigger,
805 .pointer = snd_via686_pcm_pointer,
806 .page = snd_pcm_sgbuf_ops_page,
807 };
808
809
810 static void init_viadev(via82xx_t *chip, int idx, unsigned int reg_offset, int direction)
811 {
812 chip->devs[idx].reg_offset = reg_offset;
813 chip->devs[idx].direction = direction;
814 chip->devs[idx].port = chip->port + reg_offset;
815 }
816
817 /*
818 * create a pcm instance for via686a/b
819 */
820 static int __devinit snd_via686_pcm_new(via82xx_t *chip)
821 {
822 snd_pcm_t *pcm;
823 int err;
824
825 chip->playback_devno = 0;
826 chip->capture_devno = 1;
827 chip->num_devs = 2;
828 chip->intr_mask = 0x330000; /* FLAGS | EOL for MR, MW */
829
830 err = snd_pcm_new(chip->card, chip->card->shortname, 0, 1, 1, &pcm);
831 if (err < 0)
832 return err;
833 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via686_playback_ops);
834 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via686_capture_ops);
835 pcm->private_data = chip;
836 strcpy(pcm->name, chip->card->shortname);
837 chip->pcms[0] = pcm;
838 init_viadev(chip, 0, VIA_REG_MO_STATUS, 0);
839 init_viadev(chip, 1, VIA_REG_MI_STATUS, 1);
840
841 if ((err = snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
842 snd_dma_pci_data(chip->pci), 64*1024, 128*1024)) < 0)
843 return err;
844
845 return 0;
846 }
847
848
849 /*
850 * Mixer part
851 */
852
853
854 static void snd_via82xx_mixer_free_ac97_bus(ac97_bus_t *bus)
855 {
856 via82xx_t *chip = bus->private_data;
857 chip->ac97_bus = NULL;
858 }
859
860 static void snd_via82xx_mixer_free_ac97(ac97_t *ac97)
861 {
862 via82xx_t *chip = ac97->private_data;
863 chip->ac97 = NULL;
864 }
865
866
867 static int __devinit snd_via82xx_mixer_new(via82xx_t *chip)
868 {
869 ac97_template_t ac97;
870 int err;
871 static ac97_bus_ops_t ops = {
872 .write = snd_via82xx_codec_write,
873 .read = snd_via82xx_codec_read,
874 .wait = snd_via82xx_codec_wait,
875 };
876
877 if ((err = snd_ac97_bus(chip->card, 0, &ops, chip, &chip->ac97_bus)) < 0)
878 return err;
879 chip->ac97_bus->private_free = snd_via82xx_mixer_free_ac97_bus;
880 chip->ac97_bus->clock = chip->ac97_clock;
881 chip->ac97_bus->shared_type = AC97_SHARED_TYPE_VIA;
882
883 memset(&ac97, 0, sizeof(ac97));
884 ac97.private_data = chip;
885 ac97.private_free = snd_via82xx_mixer_free_ac97;
886 ac97.pci = chip->pci;
887 ac97.scaps = AC97_SCAP_SKIP_AUDIO;
888 ac97.num = chip->ac97_secondary;
889
890 if ((err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97)) < 0)
891 return err;
892
893 return 0;
894 }
895
896
897 /*
898 * proc interface
899 */
900 static void snd_via82xx_proc_read(snd_info_entry_t *entry, snd_info_buffer_t *buffer)
901 {
902 via82xx_t *chip = entry->private_data;
903 int i;
904
905 snd_iprintf(buffer, "%s\n\n", chip->card->longname);
906 for (i = 0; i < 0xa0; i += 4) {
907 snd_iprintf(buffer, "%02x: %08x\n", i, inl(chip->port + i));
908 }
909 }
910
911 static void __devinit snd_via82xx_proc_init(via82xx_t *chip)
912 {
913 snd_info_entry_t *entry;
914
915 if (! snd_card_proc_new(chip->card, "via82xx", &entry))
916 snd_info_set_text_ops(entry, chip, 1024, snd_via82xx_proc_read);
917 }
918
919 /*
920 *
921 */
922
923 static int snd_via82xx_chip_init(via82xx_t *chip)
924 {
925 unsigned int val;
926 unsigned long end_time;
927 unsigned char pval;
928
929 pci_read_config_byte(chip->pci, VIA_MC97_CTRL, &pval);
930 if((pval & VIA_MC97_CTRL_INIT) != VIA_MC97_CTRL_INIT) {
931 pci_write_config_byte(chip->pci, 0x44, pval|VIA_MC97_CTRL_INIT);
932 udelay(100);
933 }
934
935 pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval);
936 if (! (pval & VIA_ACLINK_C00_READY)) { /* codec not ready? */
937 /* deassert ACLink reset, force SYNC */
938 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL,
939 VIA_ACLINK_CTRL_ENABLE |
940 VIA_ACLINK_CTRL_RESET |
941 VIA_ACLINK_CTRL_SYNC);
942 udelay(100);
943 #if 1 /* FIXME: should we do full reset here for all chip models? */
944 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, 0x00);
945 udelay(100);
946 #else
947 /* deassert ACLink reset, force SYNC (warm AC'97 reset) */
948 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL,
949 VIA_ACLINK_CTRL_RESET|VIA_ACLINK_CTRL_SYNC);
950 udelay(2);
951 #endif
952 /* ACLink on, deassert ACLink reset, VSR, SGD data out */
953 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT);
954 udelay(100);
955 }
956
957 pci_read_config_byte(chip->pci, VIA_ACLINK_CTRL, &pval);
958 if ((pval & VIA_ACLINK_CTRL_INIT) != VIA_ACLINK_CTRL_INIT) {
959 /* ACLink on, deassert ACLink reset, VSR, SGD data out */
960 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT);
961 udelay(100);
962 }
963
964 /* wait until codec ready */
965 end_time = jiffies + msecs_to_jiffies(750);
966 do {
967 pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval);
968 if (pval & VIA_ACLINK_C00_READY) /* primary codec ready */
969 break;
970 set_current_state(TASK_UNINTERRUPTIBLE);
971 schedule_timeout(1);
972 } while (time_before(jiffies, end_time));
973
974 if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY)
975 snd_printk("AC'97 codec is not ready [0x%x]\n", val);
976
977 snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ |
978 VIA_REG_AC97_SECONDARY_VALID |
979 (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT));
980 end_time = jiffies + msecs_to_jiffies(750);
981 snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ |
982 VIA_REG_AC97_SECONDARY_VALID |
983 (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT));
984 do {
985 if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_SECONDARY_VALID) {
986 chip->ac97_secondary = 1;
987 goto __ac97_ok2;
988 }
989 set_current_state(TASK_INTERRUPTIBLE);
990 schedule_timeout(1);
991 } while (time_before(jiffies, end_time));
992 /* This is ok, the most of motherboards have only one codec */
993
994 __ac97_ok2:
995
996 /* route FM trap to IRQ, disable FM trap */
997 // pci_write_config_byte(chip->pci, VIA_FM_NMI_CTRL, 0);
998 /* disable all GPI interrupts */
999 outl(0, VIAREG(chip, GPI_INTR));
1000
1001 return 0;
1002 }
1003
1004 #ifdef CONFIG_PM
1005 /*
1006 * power management
1007 */
1008 static int snd_via82xx_suspend(snd_card_t *card, pm_message_t state)
1009 {
1010 via82xx_t *chip = card->pm_private_data;
1011 int i;
1012
1013 for (i = 0; i < 2; i++)
1014 if (chip->pcms[i])
1015 snd_pcm_suspend_all(chip->pcms[i]);
1016 for (i = 0; i < chip->num_devs; i++)
1017 snd_via82xx_channel_reset(chip, &chip->devs[i]);
1018 synchronize_irq(chip->irq);
1019 snd_ac97_suspend(chip->ac97);
1020 pci_set_power_state(chip->pci, 3);
1021 pci_disable_device(chip->pci);
1022 return 0;
1023 }
1024
1025 static int snd_via82xx_resume(snd_card_t *card)
1026 {
1027 via82xx_t *chip = card->pm_private_data;
1028 int i;
1029
1030 pci_enable_device(chip->pci);
1031 pci_set_power_state(chip->pci, 0);
1032 pci_set_master(chip->pci);
1033
1034 snd_via82xx_chip_init(chip);
1035
1036 snd_ac97_resume(chip->ac97);
1037
1038 for (i = 0; i < chip->num_devs; i++)
1039 snd_via82xx_channel_reset(chip, &chip->devs[i]);
1040
1041 return 0;
1042 }
1043 #endif /* CONFIG_PM */
1044
1045 static int snd_via82xx_free(via82xx_t *chip)
1046 {
1047 unsigned int i;
1048
1049 if (chip->irq < 0)
1050 goto __end_hw;
1051 /* disable interrupts */
1052 for (i = 0; i < chip->num_devs; i++)
1053 snd_via82xx_channel_reset(chip, &chip->devs[i]);
1054 synchronize_irq(chip->irq);
1055 __end_hw:
1056 if (chip->irq >= 0)
1057 free_irq(chip->irq, (void *)chip);
1058 pci_release_regions(chip->pci);
1059 pci_disable_device(chip->pci);
1060 kfree(chip);
1061 return 0;
1062 }
1063
1064 static int snd_via82xx_dev_free(snd_device_t *device)
1065 {
1066 via82xx_t *chip = device->device_data;
1067 return snd_via82xx_free(chip);
1068 }
1069
1070 static int __devinit snd_via82xx_create(snd_card_t * card,
1071 struct pci_dev *pci,
1072 int chip_type,
1073 int revision,
1074 unsigned int ac97_clock,
1075 via82xx_t ** r_via)
1076 {
1077 via82xx_t *chip;
1078 int err;
1079 static snd_device_ops_t ops = {
1080 .dev_free = snd_via82xx_dev_free,
1081 };
1082
1083 if ((err = pci_enable_device(pci)) < 0)
1084 return err;
1085
1086 if ((chip = kcalloc(1, sizeof(*chip), GFP_KERNEL)) == NULL) {
1087 pci_disable_device(pci);
1088 return -ENOMEM;
1089 }
1090
1091 spin_lock_init(&chip->reg_lock);
1092 chip->card = card;
1093 chip->pci = pci;
1094 chip->irq = -1;
1095
1096 if ((err = pci_request_regions(pci, card->driver)) < 0) {
1097 kfree(chip);
1098 pci_disable_device(pci);
1099 return err;
1100 }
1101 chip->port = pci_resource_start(pci, 0);
1102 if (request_irq(pci->irq, snd_via82xx_interrupt, SA_INTERRUPT|SA_SHIRQ,
1103 card->driver, (void *)chip)) {
1104 snd_printk("unable to grab IRQ %d\n", pci->irq);
1105 snd_via82xx_free(chip);
1106 return -EBUSY;
1107 }
1108 chip->irq = pci->irq;
1109 if (ac97_clock >= 8000 && ac97_clock <= 48000)
1110 chip->ac97_clock = ac97_clock;
1111 synchronize_irq(chip->irq);
1112
1113 if ((err = snd_via82xx_chip_init(chip)) < 0) {
1114 snd_via82xx_free(chip);
1115 return err;
1116 }
1117
1118 if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
1119 snd_via82xx_free(chip);
1120 return err;
1121 }
1122
1123 /* The 8233 ac97 controller does not implement the master bit
1124 * in the pci command register. IMHO this is a violation of the PCI spec.
1125 * We call pci_set_master here because it does not hurt. */
1126 pci_set_master(pci);
1127
1128 snd_card_set_dev(card, &pci->dev);
1129
1130 *r_via = chip;
1131 return 0;
1132 }
1133
1134
1135 static int __devinit snd_via82xx_probe(struct pci_dev *pci,
1136 const struct pci_device_id *pci_id)
1137 {
1138 static int dev;
1139 snd_card_t *card;
1140 via82xx_t *chip;
1141 unsigned char revision;
1142 int chip_type = 0, card_type;
1143 unsigned int i;
1144 int err;
1145
1146 if (dev >= SNDRV_CARDS)
1147 return -ENODEV;
1148 if (!enable[dev]) {
1149 dev++;
1150 return -ENOENT;
1151 }
1152
1153 card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
1154 if (card == NULL)
1155 return -ENOMEM;
1156
1157 card_type = pci_id->driver_data;
1158 pci_read_config_byte(pci, PCI_REVISION_ID, &revision);
1159 switch (card_type) {
1160 case TYPE_CARD_VIA82XX_MODEM:
1161 strcpy(card->driver, "VIA82XX-MODEM");
1162 sprintf(card->shortname, "VIA 82XX modem");
1163 break;
1164 default:
1165 snd_printk(KERN_ERR "invalid card type %d\n", card_type);
1166 err = -EINVAL;
1167 goto __error;
1168 }
1169
1170 if ((err = snd_via82xx_create(card, pci, chip_type, revision, ac97_clock[dev], &chip)) < 0)
1171 goto __error;
1172 if ((err = snd_via82xx_mixer_new(chip)) < 0)
1173 goto __error;
1174
1175 if ((err = snd_via686_pcm_new(chip)) < 0 )
1176 goto __error;
1177
1178 snd_card_set_pm_callback(card, snd_via82xx_suspend, snd_via82xx_resume, chip);
1179
1180 /* disable interrupts */
1181 for (i = 0; i < chip->num_devs; i++)
1182 snd_via82xx_channel_reset(chip, &chip->devs[i]);
1183
1184 sprintf(card->longname, "%s at 0x%lx, irq %d",
1185 card->shortname, chip->port, chip->irq);
1186
1187 snd_via82xx_proc_init(chip);
1188
1189 if ((err = snd_card_register(card)) < 0) {
1190 snd_card_free(card);
1191 return err;
1192 }
1193 pci_set_drvdata(pci, card);
1194 dev++;
1195 return 0;
1196
1197 __error:
1198 snd_card_free(card);
1199 return err;
1200 }
1201
1202 static void __devexit snd_via82xx_remove(struct pci_dev *pci)
1203 {
1204 snd_card_free(pci_get_drvdata(pci));
1205 pci_set_drvdata(pci, NULL);
1206 }
1207
1208 static struct pci_driver driver = {
1209 .name = "VIA 82xx Modem",
1210 .id_table = snd_via82xx_modem_ids,
1211 .probe = snd_via82xx_probe,
1212 .remove = __devexit_p(snd_via82xx_remove),
1213 SND_PCI_PM_CALLBACKS
1214 };
1215
1216 static int __init alsa_card_via82xx_init(void)
1217 {
1218 return pci_register_driver(&driver);
1219 }
1220
1221 static void __exit alsa_card_via82xx_exit(void)
1222 {
1223 pci_unregister_driver(&driver);
1224 }
1225
1226 module_init(alsa_card_via82xx_init)
1227 module_exit(alsa_card_via82xx_exit)
Linux for Ginger Game Console