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ALSA: revo51: add headphone output
[linux-2.6-block.git] / sound / pci / via82xx_modem.c
CommitLineData
1da177e4
LT		 1/*
2 * ALSA modem driver for VIA VT82xx (South Bridge)
3 *
4 * VT82C686A/B/C, VT8233A/C, VT8235
5 *
c1017a4c 6 * Copyright (c) 2000 Jaroslav Kysela <perex@perex.cz>
1da177e4
LT		 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 *
f01cc521 29 * Sep. 2, 2004 Sasha Khapyorsky <sashak@alsa-project.org>
1da177e4
LT		 30 * Modified from original audio driver 'via82xx.c' to support AC97
31 * modems.
32 */
33
1da177e4
LT		 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
c1017a4c 52MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
1da177e4
LT		 53MODULE_DESCRIPTION("VIA VT82xx modem");
54MODULE_LICENSE("GPL");
55MODULE_SUPPORTED_DEVICE("{{VIA,VT82C686A/B/C modem,pci}}");
56
b7fe4622
CL		 57static int index = -2; /* Exclude the first card */
58static char *id = SNDRV_DEFAULT_STR1; /* ID for this card */
59static int ac97_clock = 48000;
1da177e4 60
b7fe4622 61module_param(index, int, 0444);
1da177e4 62MODULE_PARM_DESC(index, "Index value for VIA 82xx bridge.");
b7fe4622 63module_param(id, charp, 0444);
1da177e4 64MODULE_PARM_DESC(id, "ID string for VIA 82xx bridge.");
b7fe4622 65module_param(ac97_clock, int, 0444);
1da177e4
LT		 66MODULE_PARM_DESC(ac97_clock, "AC'97 codec clock (default 48000Hz).");
67
2b3e584b
TI		 68/* just for backward compatibility */
69static int enable;
698444f3 70module_param(enable, bool, 0444);
2b3e584b 71
1da177e4
LT		 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) \
115enum {\
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 */
126DEFINE_VIA_REGSET(MO, 0x40);
127DEFINE_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
1da177e4
LT		 208/*
209 * pcm stream
210 */
211
212struct snd_via_sg_table {
213 unsigned int offset;
214 unsigned int size;
215} ;
216
217#define VIA_TABLE_SIZE 255
218
e437e3d7 219struct viadev {
1da177e4
LT		 220 unsigned int reg_offset;
221 unsigned long port;
222 int direction; /* playback = 0, capture = 1 */
e437e3d7 223 struct snd_pcm_substream *substream;
1da177e4
LT		 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
234enum { TYPE_CARD_VIA82XX_MODEM = 1 };
235
236#define VIA_MAX_MODEM_DEVS 2
237
e437e3d7 238struct via82xx_modem {
1da177e4
LT		 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;
e437e3d7 246 struct snd_card *card;
1da177e4
LT		 247
248 unsigned int num_devs;
249 unsigned int playback_devno, capture_devno;
e437e3d7 250 struct viadev devs[VIA_MAX_MODEM_DEVS];
1da177e4 251
e437e3d7 252 struct snd_pcm *pcms[2];
1da177e4 253
e437e3d7
TI		 254 struct snd_ac97_bus *ac97_bus;
255 struct snd_ac97 *ac97;
1da177e4
LT		 256 unsigned int ac97_clock;
257 unsigned int ac97_secondary; /* secondary AC'97 codec is present */
258
259 spinlock_t reg_lock;
e437e3d7 260 struct snd_info_entry *proc_entry;
1da177e4
LT		 261};
262
f40b6890 263static struct pci_device_id snd_via82xx_modem_ids[] = {
1da177e4
LT		 264 { 0x1106, 0x3068, PCI_ANY_ID, PCI_ANY_ID, 0, 0, TYPE_CARD_VIA82XX_MODEM, },
265 { 0, }
266};
267
268MODULE_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 */
e437e3d7 278static int build_via_table(struct viadev *dev, struct snd_pcm_substream *substream,
1da177e4
LT		 279 struct pci_dev *pci,
280 unsigned int periods, unsigned int fragsize)
281{
282 unsigned int i, idx, ofs, rest;
e437e3d7 283 struct via82xx_modem *chip = snd_pcm_substream_chip(substream);
1da177e4
LT		 284 struct snd_sg_buf *sgbuf = snd_pcm_substream_sgbuf(substream);
285
286 if (dev->table.area == NULL) {
287 /* the start of each lists must be aligned to 8 bytes,
288 * but the kernel pages are much bigger, so we don't care
289 */
290 if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(chip->pci),
291 PAGE_ALIGN(VIA_TABLE_SIZE * 2 * 8),
292 &dev->table) < 0)
293 return -ENOMEM;
294 }
295 if (! dev->idx_table) {
296 dev->idx_table = kmalloc(sizeof(*dev->idx_table) * VIA_TABLE_SIZE, GFP_KERNEL);
297 if (! dev->idx_table)
298 return -ENOMEM;
299 }
300
301 /* fill the entries */
302 idx = 0;
303 ofs = 0;
304 for (i = 0; i < periods; i++) {
305 rest = fragsize;
306 /* fill descriptors for a period.
307 * a period can be split to several descriptors if it's
308 * over page boundary.
309 */
310 do {
311 unsigned int r;
312 unsigned int flag;
313
314 if (idx >= VIA_TABLE_SIZE) {
315 snd_printk(KERN_ERR "via82xx: too much table size!\n");
316 return -EINVAL;
317 }
318 ((u32 *)dev->table.area)[idx << 1] = cpu_to_le32((u32)snd_pcm_sgbuf_get_addr(sgbuf, ofs));
319 r = PAGE_SIZE - (ofs % PAGE_SIZE);
320 if (rest < r)
321 r = rest;
322 rest -= r;
323 if (! rest) {
324 if (i == periods - 1)
325 flag = VIA_TBL_BIT_EOL; /* buffer boundary */
326 else
327 flag = VIA_TBL_BIT_FLAG; /* period boundary */
328 } else
329 flag = 0; /* period continues to the next */
330 // printk("via: tbl %d: at %d size %d (rest %d)\n", idx, ofs, r, rest);
331 ((u32 *)dev->table.area)[(idx<<1) + 1] = cpu_to_le32(r | flag);
332 dev->idx_table[idx].offset = ofs;
333 dev->idx_table[idx].size = r;
334 ofs += r;
335 idx++;
336 } while (rest > 0);
337 }
338 dev->tbl_entries = idx;
339 dev->bufsize = periods * fragsize;
340 dev->bufsize2 = dev->bufsize / 2;
341 return 0;
342}
343
344
e437e3d7 345static int clean_via_table(struct viadev *dev, struct snd_pcm_substream *substream,
1da177e4
LT		 346 struct pci_dev *pci)
347{
348 if (dev->table.area) {
349 snd_dma_free_pages(&dev->table);
350 dev->table.area = NULL;
351 }
4d572776
JJ		 352 kfree(dev->idx_table);
353 dev->idx_table = NULL;
1da177e4
LT		 354 return 0;
355}
356
357/*
358 * Basic I/O
359 */
360
e437e3d7 361static inline unsigned int snd_via82xx_codec_xread(struct via82xx_modem *chip)
1da177e4
LT		 362{
363 return inl(VIAREG(chip, AC97));
364}
365
e437e3d7 366static inline void snd_via82xx_codec_xwrite(struct via82xx_modem *chip, unsigned int val)
1da177e4
LT		 367{
368 outl(val, VIAREG(chip, AC97));
369}
370
e437e3d7 371static int snd_via82xx_codec_ready(struct via82xx_modem *chip, int secondary)
1da177e4
LT		 372{
373 unsigned int timeout = 1000; /* 1ms */
374 unsigned int val;
375
376 while (timeout-- > 0) {
377 udelay(1);
378 if (!((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY))
379 return val & 0xffff;
380 }
e437e3d7
TI		 381 snd_printk(KERN_ERR "codec_ready: codec %i is not ready [0x%x]\n",
382 secondary, snd_via82xx_codec_xread(chip));
1da177e4
LT		 383 return -EIO;
384}
385
e437e3d7 386static int snd_via82xx_codec_valid(struct via82xx_modem *chip, int secondary)
1da177e4
LT		 387{
388 unsigned int timeout = 1000; /* 1ms */
389 unsigned int val, val1;
390 unsigned int stat = !secondary ? VIA_REG_AC97_PRIMARY_VALID :
391 VIA_REG_AC97_SECONDARY_VALID;
392
393 while (timeout-- > 0) {
394 val = snd_via82xx_codec_xread(chip);
395 val1 = val & (VIA_REG_AC97_BUSY | stat);
396 if (val1 == stat)
397 return val & 0xffff;
398 udelay(1);
399 }
400 return -EIO;
401}
402
e437e3d7 403static void snd_via82xx_codec_wait(struct snd_ac97 *ac97)
1da177e4 404{
e437e3d7 405 struct via82xx_modem *chip = ac97->private_data;
1da177e4
LT		 406 int err;
407 err = snd_via82xx_codec_ready(chip, ac97->num);
408 /* here we need to wait fairly for long time.. */
ef21ca24 409 msleep(500);
1da177e4
LT		 410}
411
e437e3d7 412static void snd_via82xx_codec_write(struct snd_ac97 *ac97,
1da177e4
LT		 413 unsigned short reg,
414 unsigned short val)
415{
e437e3d7 416 struct via82xx_modem *chip = ac97->private_data;
1da177e4 417 unsigned int xval;
83a5b72a
SK		 418 if(reg == AC97_GPIO_STATUS) {
419 outl(val, VIAREG(chip, GPI_STATUS));
420 return;
421 }
1da177e4
LT		 422 xval = !ac97->num ? VIA_REG_AC97_CODEC_ID_PRIMARY : VIA_REG_AC97_CODEC_ID_SECONDARY;
423 xval <<= VIA_REG_AC97_CODEC_ID_SHIFT;
424 xval |= reg << VIA_REG_AC97_CMD_SHIFT;
425 xval |= val << VIA_REG_AC97_DATA_SHIFT;
426 snd_via82xx_codec_xwrite(chip, xval);
427 snd_via82xx_codec_ready(chip, ac97->num);
428}
429
e437e3d7 430static unsigned short snd_via82xx_codec_read(struct snd_ac97 *ac97, unsigned short reg)
1da177e4 431{
e437e3d7 432 struct via82xx_modem *chip = ac97->private_data;
1da177e4
LT		 433 unsigned int xval, val = 0xffff;
434 int again = 0;
435
436 xval = ac97->num << VIA_REG_AC97_CODEC_ID_SHIFT;
437 xval |= ac97->num ? VIA_REG_AC97_SECONDARY_VALID : VIA_REG_AC97_PRIMARY_VALID;
438 xval |= VIA_REG_AC97_READ;
439 xval |= (reg & 0x7f) << VIA_REG_AC97_CMD_SHIFT;
440 while (1) {
441 if (again++ > 3) {
e437e3d7
TI		 442 snd_printk(KERN_ERR "codec_read: codec %i is not valid [0x%x]\n",
443 ac97->num, snd_via82xx_codec_xread(chip));
1da177e4
LT		 444 return 0xffff;
445 }
446 snd_via82xx_codec_xwrite(chip, xval);
447 udelay (20);
448 if (snd_via82xx_codec_valid(chip, ac97->num) >= 0) {
449 udelay(25);
450 val = snd_via82xx_codec_xread(chip);
451 break;
452 }
453 }
454 return val & 0xffff;
455}
456
e437e3d7 457static void snd_via82xx_channel_reset(struct via82xx_modem *chip, struct viadev *viadev)
1da177e4
LT		 458{
459 outb(VIA_REG_CTRL_PAUSE | VIA_REG_CTRL_TERMINATE | VIA_REG_CTRL_RESET,
460 VIADEV_REG(viadev, OFFSET_CONTROL));
461 inb(VIADEV_REG(viadev, OFFSET_CONTROL));
462 udelay(50);
463 /* disable interrupts */
464 outb(0x00, VIADEV_REG(viadev, OFFSET_CONTROL));
465 /* clear interrupts */
466 outb(0x03, VIADEV_REG(viadev, OFFSET_STATUS));
467 outb(0x00, VIADEV_REG(viadev, OFFSET_TYPE)); /* for via686 */
468 // outl(0, VIADEV_REG(viadev, OFFSET_CURR_PTR));
469 viadev->lastpos = 0;
470}
471
472
473/*
474 * Interrupt handler
475 */
476
7d12e780 477static irqreturn_t snd_via82xx_interrupt(int irq, void *dev_id)
1da177e4 478{
e437e3d7 479 struct via82xx_modem *chip = dev_id;
1da177e4
LT		 480 unsigned int status;
481 unsigned int i;
482
483 status = inl(VIAREG(chip, SGD_SHADOW));
484 if (! (status & chip->intr_mask)) {
485 return IRQ_NONE;
486 }
487// _skip_sgd:
488
489 /* check status for each stream */
490 spin_lock(&chip->reg_lock);
491 for (i = 0; i < chip->num_devs; i++) {
e437e3d7 492 struct viadev *viadev = &chip->devs[i];
1da177e4
LT		 493 unsigned char c_status = inb(VIADEV_REG(viadev, OFFSET_STATUS));
494 c_status &= (VIA_REG_STAT_EOL|VIA_REG_STAT_FLAG|VIA_REG_STAT_STOPPED);
495 if (! c_status)
496 continue;
497 if (viadev->substream && viadev->running) {
498 spin_unlock(&chip->reg_lock);
499 snd_pcm_period_elapsed(viadev->substream);
500 spin_lock(&chip->reg_lock);
501 }
502 outb(c_status, VIADEV_REG(viadev, OFFSET_STATUS)); /* ack */
503 }
504 spin_unlock(&chip->reg_lock);
505 return IRQ_HANDLED;
506}
507
508/*
509 * PCM callbacks
510 */
511
512/*
513 * trigger callback
514 */
e437e3d7 515static int snd_via82xx_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
1da177e4 516{
e437e3d7
TI		 517 struct via82xx_modem *chip = snd_pcm_substream_chip(substream);
518 struct viadev *viadev = substream->runtime->private_data;
1da177e4
LT		 519 unsigned char val = 0;
520
521 switch (cmd) {
522 case SNDRV_PCM_TRIGGER_START:
41e4845c 523 case SNDRV_PCM_TRIGGER_SUSPEND:
1da177e4
LT		 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
1da177e4
LT		 547/*
548 * pointer callbacks
549 */
550
551/*
552 * calculate the linear position at the given sg-buffer index and the rest count
553 */
554
555#define check_invalid_pos(viadev,pos) \
e437e3d7
TI		 556 ((pos) < viadev->lastpos && ((pos) >= viadev->bufsize2 ||\
557 viadev->lastpos < viadev->bufsize2))
1da177e4 558
e437e3d7
TI		 559static inline unsigned int calc_linear_pos(struct viadev *viadev, unsigned int idx,
560 unsigned int count)
1da177e4
LT		 561{
562 unsigned int size, res;
563
564 size = viadev->idx_table[idx].size;
565 res = viadev->idx_table[idx].offset + size - count;
566
567 /* check the validity of the calculated position */
568 if (size < count) {
e437e3d7
TI		 569 snd_printd(KERN_ERR "invalid via82xx_cur_ptr (size = %d, count = %d)\n",
570 (int)size, (int)count);
1da177e4
LT		 571 res = viadev->lastpos;
572 } else if (check_invalid_pos(viadev, res)) {
573#ifdef POINTER_DEBUG
e437e3d7
TI		 574 printk(KERN_DEBUG "fail: idx = %i/%i, lastpos = 0x%x, "
575 "bufsize2 = 0x%x, offsize = 0x%x, size = 0x%x, "
576 "count = 0x%x\n", idx, viadev->tbl_entries, viadev->lastpos,
577 viadev->bufsize2, viadev->idx_table[idx].offset,
578 viadev->idx_table[idx].size, count);
1da177e4
LT		 579#endif
580 if (count && size < count) {
e437e3d7
TI		 581 snd_printd(KERN_ERR "invalid via82xx_cur_ptr, "
582 "using last valid pointer\n");
1da177e4
LT		 583 res = viadev->lastpos;
584 } else {
585 if (! count)
586 /* bogus count 0 on the DMA boundary? */
587 res = viadev->idx_table[idx].offset;
588 else
e437e3d7
TI		 589 /* count register returns full size
590 * when end of buffer is reached
591 */
1da177e4
LT		 592 res = viadev->idx_table[idx].offset + size;
593 if (check_invalid_pos(viadev, res)) {
e437e3d7
TI		 594 snd_printd(KERN_ERR "invalid via82xx_cur_ptr (2), "
595 "using last valid pointer\n");
1da177e4
LT		 596 res = viadev->lastpos;
597 }
598 }
599 }
600 viadev->lastpos = res; /* remember the last position */
601 if (res >= viadev->bufsize)
602 res -= viadev->bufsize;
603 return res;
604}
605
606/*
607 * get the current pointer on via686
608 */
e437e3d7 609static snd_pcm_uframes_t snd_via686_pcm_pointer(struct snd_pcm_substream *substream)
1da177e4 610{
e437e3d7
TI		 611 struct via82xx_modem *chip = snd_pcm_substream_chip(substream);
612 struct viadev *viadev = substream->runtime->private_data;
1da177e4
LT		 613 unsigned int idx, ptr, count, res;
614
da3cec35
TI		 615 if (snd_BUG_ON(!viadev->tbl_entries))
616 return 0;
1da177e4
LT		 617 if (!(inb(VIADEV_REG(viadev, OFFSET_STATUS)) & VIA_REG_STAT_ACTIVE))
618 return 0;
619
620 spin_lock(&chip->reg_lock);
621 count = inl(VIADEV_REG(viadev, OFFSET_CURR_COUNT)) & 0xffffff;
622 /* The via686a does not have the current index register,
623 * so we need to calculate the index from CURR_PTR.
624 */
625 ptr = inl(VIADEV_REG(viadev, OFFSET_CURR_PTR));
626 if (ptr <= (unsigned int)viadev->table.addr)
627 idx = 0;
628 else /* CURR_PTR holds the address + 8 */
e437e3d7
TI		 629 idx = ((ptr - (unsigned int)viadev->table.addr) / 8 - 1) %
630 viadev->tbl_entries;
1da177e4
LT		 631 res = calc_linear_pos(viadev, idx, count);
632 spin_unlock(&chip->reg_lock);
633
634 return bytes_to_frames(substream->runtime, res);
635}
636
637/*
638 * hw_params callback:
639 * allocate the buffer and build up the buffer description table
640 */
e437e3d7
TI		 641static int snd_via82xx_hw_params(struct snd_pcm_substream *substream,
642 struct snd_pcm_hw_params *hw_params)
1da177e4 643{
e437e3d7
TI		 644 struct via82xx_modem *chip = snd_pcm_substream_chip(substream);
645 struct viadev *viadev = substream->runtime->private_data;
1da177e4
LT		 646 int err;
647
648 err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
649 if (err < 0)
650 return err;
651 err = build_via_table(viadev, substream, chip->pci,
652 params_periods(hw_params),
653 params_period_bytes(hw_params));
654 if (err < 0)
655 return err;
656
657 snd_ac97_write(chip->ac97, AC97_LINE1_RATE, params_rate(hw_params));
658 snd_ac97_write(chip->ac97, AC97_LINE1_LEVEL, 0);
659
660 return 0;
661}
662
663/*
664 * hw_free callback:
665 * clean up the buffer description table and release the buffer
666 */
e437e3d7 667static int snd_via82xx_hw_free(struct snd_pcm_substream *substream)
1da177e4 668{
e437e3d7
TI		 669 struct via82xx_modem *chip = snd_pcm_substream_chip(substream);
670 struct viadev *viadev = substream->runtime->private_data;
1da177e4
LT		 671
672 clean_via_table(viadev, substream, chip->pci);
673 snd_pcm_lib_free_pages(substream);
674 return 0;
675}
676
677
678/*
679 * set up the table pointer
680 */
e437e3d7 681static void snd_via82xx_set_table_ptr(struct via82xx_modem *chip, struct viadev *viadev)
1da177e4
LT		 682{
683 snd_via82xx_codec_ready(chip, chip->ac97_secondary);
684 outl((u32)viadev->table.addr, VIADEV_REG(viadev, OFFSET_TABLE_PTR));
685 udelay(20);
686 snd_via82xx_codec_ready(chip, chip->ac97_secondary);
687}
688
689/*
690 * prepare callback for playback and capture
691 */
e437e3d7 692static int snd_via82xx_pcm_prepare(struct snd_pcm_substream *substream)
1da177e4 693{
e437e3d7
TI		 694 struct via82xx_modem *chip = snd_pcm_substream_chip(substream);
695 struct viadev *viadev = substream->runtime->private_data;
1da177e4
LT		 696
697 snd_via82xx_channel_reset(chip, viadev);
698 /* this must be set after channel_reset */
699 snd_via82xx_set_table_ptr(chip, viadev);
700 outb(VIA_REG_TYPE_AUTOSTART|VIA_REG_TYPE_INT_EOL|VIA_REG_TYPE_INT_FLAG,
701 VIADEV_REG(viadev, OFFSET_TYPE));
702 return 0;
703}
704
705/*
706 * pcm hardware definition, identical for both playback and capture
707 */
e437e3d7 708static struct snd_pcm_hardware snd_via82xx_hw =
1da177e4
LT		 709{
710 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
711 SNDRV_PCM_INFO_BLOCK_TRANSFER |
712 SNDRV_PCM_INFO_MMAP_VALID |
41e4845c 713 /* SNDRV_PCM_INFO_RESUME | */
1da177e4
LT		 714 SNDRV_PCM_INFO_PAUSE),
715 .formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE,
716 .rates = SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_KNOT,
717 .rate_min = 8000,
718 .rate_max = 16000,
719 .channels_min = 1,
720 .channels_max = 1,
721 .buffer_bytes_max = 128 * 1024,
722 .period_bytes_min = 32,
723 .period_bytes_max = 128 * 1024,
724 .periods_min = 2,
725 .periods_max = VIA_TABLE_SIZE / 2,
726 .fifo_size = 0,
727};
728
729
730/*
731 * open callback skeleton
732 */
e437e3d7
TI		 733static int snd_via82xx_modem_pcm_open(struct via82xx_modem *chip, struct viadev *viadev,
734 struct snd_pcm_substream *substream)
1da177e4 735{
e437e3d7 736 struct snd_pcm_runtime *runtime = substream->runtime;
1da177e4
LT		 737 int err;
738 static unsigned int rates[] = { 8000, 9600, 12000, 16000 };
e437e3d7 739 static struct snd_pcm_hw_constraint_list hw_constraints_rates = {
1da177e4
LT		 740 .count = ARRAY_SIZE(rates),
741 .list = rates,
742 .mask = 0,
743 };
744
745 runtime->hw = snd_via82xx_hw;
746
e437e3d7
TI		 747 if ((err = snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
748 &hw_constraints_rates)) < 0)
1da177e4
LT		 749 return err;
750
751 /* we may remove following constaint when we modify table entries
752 in interrupt */
753 if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
754 return err;
755
756 runtime->private_data = viadev;
757 viadev->substream = substream;
758
759 return 0;
760}
761
762
763/*
764 * open callback for playback
765 */
e437e3d7 766static int snd_via82xx_playback_open(struct snd_pcm_substream *substream)
1da177e4 767{
e437e3d7
TI		 768 struct via82xx_modem *chip = snd_pcm_substream_chip(substream);
769 struct viadev *viadev = &chip->devs[chip->playback_devno + substream->number];
1da177e4
LT		 770
771 return snd_via82xx_modem_pcm_open(chip, viadev, substream);
772}
773
774/*
775 * open callback for capture
776 */
e437e3d7 777static int snd_via82xx_capture_open(struct snd_pcm_substream *substream)
1da177e4 778{
e437e3d7
TI		 779 struct via82xx_modem *chip = snd_pcm_substream_chip(substream);
780 struct viadev *viadev = &chip->devs[chip->capture_devno + substream->pcm->device];
1da177e4
LT		 781
782 return snd_via82xx_modem_pcm_open(chip, viadev, substream);
783}
784
785/*
786 * close callback
787 */
e437e3d7 788static int snd_via82xx_pcm_close(struct snd_pcm_substream *substream)
1da177e4 789{
e437e3d7 790 struct viadev *viadev = substream->runtime->private_data;
1da177e4
LT		 791
792 viadev->substream = NULL;
793 return 0;
794}
795
796
797/* via686 playback callbacks */
e437e3d7 798static struct snd_pcm_ops snd_via686_playback_ops = {
1da177e4
LT		 799 .open = snd_via82xx_playback_open,
800 .close = snd_via82xx_pcm_close,
801 .ioctl = snd_pcm_lib_ioctl,
802 .hw_params = snd_via82xx_hw_params,
803 .hw_free = snd_via82xx_hw_free,
804 .prepare = snd_via82xx_pcm_prepare,
83a5b72a 805 .trigger = snd_via82xx_pcm_trigger,
1da177e4
LT		 806 .pointer = snd_via686_pcm_pointer,
807 .page = snd_pcm_sgbuf_ops_page,
808};
809
810/* via686 capture callbacks */
e437e3d7 811static struct snd_pcm_ops snd_via686_capture_ops = {
1da177e4
LT		 812 .open = snd_via82xx_capture_open,
813 .close = snd_via82xx_pcm_close,
814 .ioctl = snd_pcm_lib_ioctl,
815 .hw_params = snd_via82xx_hw_params,
816 .hw_free = snd_via82xx_hw_free,
817 .prepare = snd_via82xx_pcm_prepare,
83a5b72a 818 .trigger = snd_via82xx_pcm_trigger,
1da177e4
LT		 819 .pointer = snd_via686_pcm_pointer,
820 .page = snd_pcm_sgbuf_ops_page,
821};
822
823
e437e3d7
TI		 824static void init_viadev(struct via82xx_modem *chip, int idx, unsigned int reg_offset,
825 int direction)
1da177e4
LT		 826{
827 chip->devs[idx].reg_offset = reg_offset;
828 chip->devs[idx].direction = direction;
829 chip->devs[idx].port = chip->port + reg_offset;
830}
831
832/*
833 * create a pcm instance for via686a/b
834 */
e437e3d7 835static int __devinit snd_via686_pcm_new(struct via82xx_modem *chip)
1da177e4 836{
e437e3d7 837 struct snd_pcm *pcm;
1da177e4
LT		 838 int err;
839
840 chip->playback_devno = 0;
841 chip->capture_devno = 1;
842 chip->num_devs = 2;
843 chip->intr_mask = 0x330000; /* FLAGS | EOL for MR, MW */
844
845 err = snd_pcm_new(chip->card, chip->card->shortname, 0, 1, 1, &pcm);
846 if (err < 0)
847 return err;
848 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via686_playback_ops);
849 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via686_capture_ops);
6632d198 850 pcm->dev_class = SNDRV_PCM_CLASS_MODEM;
1da177e4
LT		 851 pcm->private_data = chip;
852 strcpy(pcm->name, chip->card->shortname);
853 chip->pcms[0] = pcm;
854 init_viadev(chip, 0, VIA_REG_MO_STATUS, 0);
855 init_viadev(chip, 1, VIA_REG_MI_STATUS, 1);
856
857 if ((err = snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
e437e3d7
TI		 858 snd_dma_pci_data(chip->pci),
859 64*1024, 128*1024)) < 0)
1da177e4
LT		 860 return err;
861
862 return 0;
863}
864
865
866/*
867 * Mixer part
868 */
869
870
e437e3d7 871static void snd_via82xx_mixer_free_ac97_bus(struct snd_ac97_bus *bus)
1da177e4 872{
e437e3d7 873 struct via82xx_modem *chip = bus->private_data;
1da177e4
LT		 874 chip->ac97_bus = NULL;
875}
876
e437e3d7 877static void snd_via82xx_mixer_free_ac97(struct snd_ac97 *ac97)
1da177e4 878{
e437e3d7 879 struct via82xx_modem *chip = ac97->private_data;
1da177e4
LT		 880 chip->ac97 = NULL;
881}
882
883
e437e3d7 884static int __devinit snd_via82xx_mixer_new(struct via82xx_modem *chip)
1da177e4 885{
e437e3d7 886 struct snd_ac97_template ac97;
1da177e4 887 int err;
e437e3d7 888 static struct snd_ac97_bus_ops ops = {
1da177e4
LT		 889 .write = snd_via82xx_codec_write,
890 .read = snd_via82xx_codec_read,
891 .wait = snd_via82xx_codec_wait,
892 };
893
894 if ((err = snd_ac97_bus(chip->card, 0, &ops, chip, &chip->ac97_bus)) < 0)
895 return err;
896 chip->ac97_bus->private_free = snd_via82xx_mixer_free_ac97_bus;
897 chip->ac97_bus->clock = chip->ac97_clock;
1da177e4
LT		 898
899 memset(&ac97, 0, sizeof(ac97));
900 ac97.private_data = chip;
901 ac97.private_free = snd_via82xx_mixer_free_ac97;
902 ac97.pci = chip->pci;
f1a63a38 903 ac97.scaps = AC97_SCAP_SKIP_AUDIO | AC97_SCAP_POWER_SAVE;
1da177e4
LT		 904 ac97.num = chip->ac97_secondary;
905
906 if ((err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97)) < 0)
907 return err;
908
909 return 0;
910}
911
912
913/*
914 * proc interface
915 */
e437e3d7 916static void snd_via82xx_proc_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer)
1da177e4 917{
e437e3d7 918 struct via82xx_modem *chip = entry->private_data;
1da177e4
LT		 919 int i;
920
921 snd_iprintf(buffer, "%s\n\n", chip->card->longname);
922 for (i = 0; i < 0xa0; i += 4) {
923 snd_iprintf(buffer, "%02x: %08x\n", i, inl(chip->port + i));
924 }
925}
926
e437e3d7 927static void __devinit snd_via82xx_proc_init(struct via82xx_modem *chip)
1da177e4 928{
e437e3d7 929 struct snd_info_entry *entry;
1da177e4
LT		 930
931 if (! snd_card_proc_new(chip->card, "via82xx", &entry))
bf850204 932 snd_info_set_text_ops(entry, chip, snd_via82xx_proc_read);
1da177e4
LT		 933}
934
935/*
936 *
937 */
938
e437e3d7 939static int snd_via82xx_chip_init(struct via82xx_modem *chip)
1da177e4
LT		 940{
941 unsigned int val;
ef21ca24 942 unsigned long end_time;
1da177e4
LT		 943 unsigned char pval;
944
945 pci_read_config_byte(chip->pci, VIA_MC97_CTRL, &pval);
946 if((pval & VIA_MC97_CTRL_INIT) != VIA_MC97_CTRL_INIT) {
947 pci_write_config_byte(chip->pci, 0x44, pval|VIA_MC97_CTRL_INIT);
948 udelay(100);
949 }
950
951 pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval);
952 if (! (pval & VIA_ACLINK_C00_READY)) { /* codec not ready? */
953 /* deassert ACLink reset, force SYNC */
954 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL,
955 VIA_ACLINK_CTRL_ENABLE |
956 VIA_ACLINK_CTRL_RESET |
957 VIA_ACLINK_CTRL_SYNC);
958 udelay(100);
959#if 1 /* FIXME: should we do full reset here for all chip models? */
960 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, 0x00);
961 udelay(100);
962#else
963 /* deassert ACLink reset, force SYNC (warm AC'97 reset) */
964 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL,
965 VIA_ACLINK_CTRL_RESET|VIA_ACLINK_CTRL_SYNC);
966 udelay(2);
967#endif
968 /* ACLink on, deassert ACLink reset, VSR, SGD data out */
969 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT);
970 udelay(100);
971 }
972
973 pci_read_config_byte(chip->pci, VIA_ACLINK_CTRL, &pval);
974 if ((pval & VIA_ACLINK_CTRL_INIT) != VIA_ACLINK_CTRL_INIT) {
975 /* ACLink on, deassert ACLink reset, VSR, SGD data out */
976 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT);
977 udelay(100);
978 }
979
980 /* wait until codec ready */
ef21ca24 981 end_time = jiffies + msecs_to_jiffies(750);
1da177e4
LT		 982 do {
983 pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval);
984 if (pval & VIA_ACLINK_C00_READY) /* primary codec ready */
985 break;
d86d0193 986 schedule_timeout_uninterruptible(1);
ef21ca24 987 } while (time_before(jiffies, end_time));
1da177e4
LT		 988
989 if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY)
99b359ba 990 snd_printk(KERN_ERR "AC'97 codec is not ready [0x%x]\n", val);
1da177e4
LT		 991
992 snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ |
993 VIA_REG_AC97_SECONDARY_VALID |
994 (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT));
ef21ca24 995 end_time = jiffies + msecs_to_jiffies(750);
1da177e4
LT		 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 do {
1000 if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_SECONDARY_VALID) {
1001 chip->ac97_secondary = 1;
1002 goto __ac97_ok2;
1003 }
d86d0193 1004 schedule_timeout_uninterruptible(1);
ef21ca24 1005 } while (time_before(jiffies, end_time));
1da177e4
LT		 1006 /* This is ok, the most of motherboards have only one codec */
1007
1008 __ac97_ok2:
1009
1010 /* route FM trap to IRQ, disable FM trap */
1011 // pci_write_config_byte(chip->pci, VIA_FM_NMI_CTRL, 0);
1012 /* disable all GPI interrupts */
1013 outl(0, VIAREG(chip, GPI_INTR));
1014
1015 return 0;
1016}
1017
1018#ifdef CONFIG_PM
1019/*
1020 * power management
1021 */
57feb835 1022static int snd_via82xx_suspend(struct pci_dev *pci, pm_message_t state)
1da177e4 1023{
57feb835
TI		 1024 struct snd_card *card = pci_get_drvdata(pci);
1025 struct via82xx_modem *chip = card->private_data;
1da177e4
LT		 1026 int i;
1027
57feb835 1028 snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
1da177e4 1029 for (i = 0; i < 2; i++)
57feb835 1030 snd_pcm_suspend_all(chip->pcms[i]);
1da177e4
LT		 1031 for (i = 0; i < chip->num_devs; i++)
1032 snd_via82xx_channel_reset(chip, &chip->devs[i]);
1033 synchronize_irq(chip->irq);
1034 snd_ac97_suspend(chip->ac97);
30b35399 1035
57feb835
TI		 1036 pci_disable_device(pci);
1037 pci_save_state(pci);
30b35399 1038 pci_set_power_state(pci, pci_choose_state(pci, state));
1da177e4
LT		 1039 return 0;
1040}
1041
57feb835 1042static int snd_via82xx_resume(struct pci_dev *pci)
1da177e4 1043{
57feb835
TI		 1044 struct snd_card *card = pci_get_drvdata(pci);
1045 struct via82xx_modem *chip = card->private_data;
1da177e4
LT		 1046 int i;
1047
57feb835 1048 pci_set_power_state(pci, PCI_D0);
30b35399
TI		 1049 pci_restore_state(pci);
1050 if (pci_enable_device(pci) < 0) {
1051 printk(KERN_ERR "via82xx-modem: pci_enable_device failed, "
1052 "disabling device\n");
1053 snd_card_disconnect(card);
1054 return -EIO;
1055 }
57feb835 1056 pci_set_master(pci);
1da177e4
LT		 1057
1058 snd_via82xx_chip_init(chip);
1059
1060 snd_ac97_resume(chip->ac97);
1061
1062 for (i = 0; i < chip->num_devs; i++)
1063 snd_via82xx_channel_reset(chip, &chip->devs[i]);
1064
57feb835 1065 snd_power_change_state(card, SNDRV_CTL_POWER_D0);
1da177e4
LT		 1066 return 0;
1067}
1068#endif /* CONFIG_PM */
1069
e437e3d7 1070static int snd_via82xx_free(struct via82xx_modem *chip)
1da177e4
LT		 1071{
1072 unsigned int i;
1073
1074 if (chip->irq < 0)
1075 goto __end_hw;
1076 /* disable interrupts */
1077 for (i = 0; i < chip->num_devs; i++)
1078 snd_via82xx_channel_reset(chip, &chip->devs[i]);
f000fd80 1079
1da177e4
LT		 1080 __end_hw:
1081 if (chip->irq >= 0)
e437e3d7 1082 free_irq(chip->irq, chip);
1da177e4
LT		 1083 pci_release_regions(chip->pci);
1084 pci_disable_device(chip->pci);
1085 kfree(chip);
1086 return 0;
1087}
1088
e437e3d7 1089static int snd_via82xx_dev_free(struct snd_device *device)
1da177e4 1090{
e437e3d7 1091 struct via82xx_modem *chip = device->device_data;
1da177e4
LT		 1092 return snd_via82xx_free(chip);
1093}
1094
e437e3d7 1095static int __devinit snd_via82xx_create(struct snd_card *card,
1da177e4
LT		 1096 struct pci_dev *pci,
1097 int chip_type,
1098 int revision,
1099 unsigned int ac97_clock,
e437e3d7 1100 struct via82xx_modem ** r_via)
1da177e4 1101{
e437e3d7 1102 struct via82xx_modem *chip;
1da177e4 1103 int err;
e437e3d7 1104 static struct snd_device_ops ops = {
1da177e4
LT		 1105 .dev_free = snd_via82xx_dev_free,
1106 };
1107
1108 if ((err = pci_enable_device(pci)) < 0)
1109 return err;
1110
e560d8d8 1111 if ((chip = kzalloc(sizeof(*chip), GFP_KERNEL)) == NULL) {
1da177e4
LT		 1112 pci_disable_device(pci);
1113 return -ENOMEM;
1114 }
1115
1116 spin_lock_init(&chip->reg_lock);
1117 chip->card = card;
1118 chip->pci = pci;
1119 chip->irq = -1;
1120
1121 if ((err = pci_request_regions(pci, card->driver)) < 0) {
1122 kfree(chip);
1123 pci_disable_device(pci);
1124 return err;
1125 }
1126 chip->port = pci_resource_start(pci, 0);
437a5a46 1127 if (request_irq(pci->irq, snd_via82xx_interrupt, IRQF_SHARED,
e437e3d7 1128 card->driver, chip)) {
99b359ba 1129 snd_printk(KERN_ERR "unable to grab IRQ %d\n", pci->irq);
1da177e4
LT		 1130 snd_via82xx_free(chip);
1131 return -EBUSY;
1132 }
1133 chip->irq = pci->irq;
1134 if (ac97_clock >= 8000 && ac97_clock <= 48000)
1135 chip->ac97_clock = ac97_clock;
1136 synchronize_irq(chip->irq);
1137
1138 if ((err = snd_via82xx_chip_init(chip)) < 0) {
1139 snd_via82xx_free(chip);
1140 return err;
1141 }
1142
1143 if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
1144 snd_via82xx_free(chip);
1145 return err;
1146 }
1147
1148 /* The 8233 ac97 controller does not implement the master bit
1149 * in the pci command register. IMHO this is a violation of the PCI spec.
1150 * We call pci_set_master here because it does not hurt. */
1151 pci_set_master(pci);
1152
1153 snd_card_set_dev(card, &pci->dev);
1154
1155 *r_via = chip;
1156 return 0;
1157}
1158
1159
1160static int __devinit snd_via82xx_probe(struct pci_dev *pci,
1161 const struct pci_device_id *pci_id)
1162{
e437e3d7
TI		 1163 struct snd_card *card;
1164 struct via82xx_modem *chip;
1da177e4
LT		 1165 int chip_type = 0, card_type;
1166 unsigned int i;
1167 int err;
1168
b7fe4622 1169 card = snd_card_new(index, id, THIS_MODULE, 0);
1da177e4
LT		 1170 if (card == NULL)
1171 return -ENOMEM;
1172
1173 card_type = pci_id->driver_data;
1da177e4
LT		 1174 switch (card_type) {
1175 case TYPE_CARD_VIA82XX_MODEM:
1176 strcpy(card->driver, "VIA82XX-MODEM");
1177 sprintf(card->shortname, "VIA 82XX modem");
1178 break;
1179 default:
1180 snd_printk(KERN_ERR "invalid card type %d\n", card_type);
1181 err = -EINVAL;
1182 goto __error;
1183 }
1184
44c10138 1185 if ((err = snd_via82xx_create(card, pci, chip_type, pci->revision,
b7fe4622 1186 ac97_clock, &chip)) < 0)
1da177e4 1187 goto __error;
57feb835 1188 card->private_data = chip;
1da177e4
LT		 1189 if ((err = snd_via82xx_mixer_new(chip)) < 0)
1190 goto __error;
1191
1192 if ((err = snd_via686_pcm_new(chip)) < 0 )
1193 goto __error;
1194
1da177e4
LT		 1195 /* disable interrupts */
1196 for (i = 0; i < chip->num_devs; i++)
1197 snd_via82xx_channel_reset(chip, &chip->devs[i]);
1198
1199 sprintf(card->longname, "%s at 0x%lx, irq %d",
1200 card->shortname, chip->port, chip->irq);
1201
1202 snd_via82xx_proc_init(chip);
1203
1204 if ((err = snd_card_register(card)) < 0) {
1205 snd_card_free(card);
1206 return err;
1207 }
1208 pci_set_drvdata(pci, card);
1da177e4
LT		 1209 return 0;
1210
1211 __error:
1212 snd_card_free(card);
1213 return err;
1214}
1215
1216static void __devexit snd_via82xx_remove(struct pci_dev *pci)
1217{
1218 snd_card_free(pci_get_drvdata(pci));
1219 pci_set_drvdata(pci, NULL);
1220}
1221
1222static struct pci_driver driver = {
1223 .name = "VIA 82xx Modem",
1224 .id_table = snd_via82xx_modem_ids,
1225 .probe = snd_via82xx_probe,
1226 .remove = __devexit_p(snd_via82xx_remove),
57feb835
TI		 1227#ifdef CONFIG_PM
1228 .suspend = snd_via82xx_suspend,
1229 .resume = snd_via82xx_resume,
1230#endif
1da177e4
LT		 1231};
1232
1233static int __init alsa_card_via82xx_init(void)
1234{
01d25d46 1235 return pci_register_driver(&driver);
1da177e4
LT		 1236}
1237
1238static void __exit alsa_card_via82xx_exit(void)
1239{
1240 pci_unregister_driver(&driver);
1241}
1242
1243module_init(alsa_card_via82xx_init)
1244module_exit(alsa_card_via82xx_exit)
Linux 6.x block layer and io_uring tree(s)