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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
[deliverable/linux.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
6cbbfe1c 34#include <linux/io.h>
1da177e4
LT		 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>
65a77217 40#include <linux/module.h>
1da177e4
LT		 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 68/* just for backward compatibility */
a67ff6a5 69static bool 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
9baa3c34 263static const struct pci_device_id snd_via82xx_modem_ids[] = {
28d27aae 264 { PCI_VDEVICE(VIA, 0x3068), TYPE_CARD_VIA82XX_MODEM, },
1da177e4
LT		 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
285 if (dev->table.area == NULL) {
286 /* the start of each lists must be aligned to 8 bytes,
287 * but the kernel pages are much bigger, so we don't care
288 */
289 if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(chip->pci),
290 PAGE_ALIGN(VIA_TABLE_SIZE * 2 * 8),
291 &dev->table) < 0)
292 return -ENOMEM;
293 }
294 if (! dev->idx_table) {
295 dev->idx_table = kmalloc(sizeof(*dev->idx_table) * VIA_TABLE_SIZE, GFP_KERNEL);
296 if (! dev->idx_table)
297 return -ENOMEM;
298 }
299
300 /* fill the entries */
301 idx = 0;
302 ofs = 0;
303 for (i = 0; i < periods; i++) {
304 rest = fragsize;
305 /* fill descriptors for a period.
306 * a period can be split to several descriptors if it's
307 * over page boundary.
308 */
309 do {
310 unsigned int r;
311 unsigned int flag;
77a23f26 312 unsigned int addr;
1da177e4
LT		 313
314 if (idx >= VIA_TABLE_SIZE) {
473439e0 315 dev_err(&pci->dev, "too much table size!\n");
1da177e4
LT		 316 return -EINVAL;
317 }
77a23f26
TI		 318 addr = snd_pcm_sgbuf_get_addr(substream, ofs);
319 ((u32 *)dev->table.area)[idx << 1] = cpu_to_le32(addr);
1da177e4
LT		 320 r = PAGE_SIZE - (ofs % PAGE_SIZE);
321 if (rest < r)
322 r = rest;
323 rest -= r;
324 if (! rest) {
325 if (i == periods - 1)
326 flag = VIA_TBL_BIT_EOL; /* buffer boundary */
327 else
328 flag = VIA_TBL_BIT_FLAG; /* period boundary */
329 } else
330 flag = 0; /* period continues to the next */
ee419653 331 /*
473439e0
TI		 332 dev_dbg(&pci->dev,
333 "tbl %d: at %d size %d (rest %d)\n",
334 idx, ofs, r, rest);
ee419653 335 */
1da177e4
LT		 336 ((u32 *)dev->table.area)[(idx<<1) + 1] = cpu_to_le32(r | flag);
337 dev->idx_table[idx].offset = ofs;
338 dev->idx_table[idx].size = r;
339 ofs += r;
340 idx++;
341 } while (rest > 0);
342 }
343 dev->tbl_entries = idx;
344 dev->bufsize = periods * fragsize;
345 dev->bufsize2 = dev->bufsize / 2;
346 return 0;
347}
348
349
e437e3d7 350static int clean_via_table(struct viadev *dev, struct snd_pcm_substream *substream,
1da177e4
LT		 351 struct pci_dev *pci)
352{
353 if (dev->table.area) {
354 snd_dma_free_pages(&dev->table);
355 dev->table.area = NULL;
356 }
4d572776
JJ		 357 kfree(dev->idx_table);
358 dev->idx_table = NULL;
1da177e4
LT		 359 return 0;
360}
361
362/*
363 * Basic I/O
364 */
365
e437e3d7 366static inline unsigned int snd_via82xx_codec_xread(struct via82xx_modem *chip)
1da177e4
LT		 367{
368 return inl(VIAREG(chip, AC97));
369}
370
e437e3d7 371static inline void snd_via82xx_codec_xwrite(struct via82xx_modem *chip, unsigned int val)
1da177e4
LT		 372{
373 outl(val, VIAREG(chip, AC97));
374}
375
e437e3d7 376static int snd_via82xx_codec_ready(struct via82xx_modem *chip, int secondary)
1da177e4
LT		 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 }
473439e0 386 dev_err(chip->card->dev, "codec_ready: codec %i is not ready [0x%x]\n",
e437e3d7 387 secondary, snd_via82xx_codec_xread(chip));
1da177e4
LT		 388 return -EIO;
389}
390
e437e3d7 391static int snd_via82xx_codec_valid(struct via82xx_modem *chip, int secondary)
1da177e4
LT		 392{
393 unsigned int timeout = 1000; /* 1ms */
394 unsigned int val, val1;
395 unsigned int stat = !secondary ? VIA_REG_AC97_PRIMARY_VALID :
396 VIA_REG_AC97_SECONDARY_VALID;
397
398 while (timeout-- > 0) {
399 val = snd_via82xx_codec_xread(chip);
400 val1 = val & (VIA_REG_AC97_BUSY | stat);
401 if (val1 == stat)
402 return val & 0xffff;
403 udelay(1);
404 }
405 return -EIO;
406}
407
e437e3d7 408static void snd_via82xx_codec_wait(struct snd_ac97 *ac97)
1da177e4 409{
e437e3d7 410 struct via82xx_modem *chip = ac97->private_data;
1da177e4
LT		 411 int err;
412 err = snd_via82xx_codec_ready(chip, ac97->num);
413 /* here we need to wait fairly for long time.. */
ef21ca24 414 msleep(500);
1da177e4
LT		 415}
416
e437e3d7 417static void snd_via82xx_codec_write(struct snd_ac97 *ac97,
1da177e4
LT		 418 unsigned short reg,
419 unsigned short val)
420{
e437e3d7 421 struct via82xx_modem *chip = ac97->private_data;
1da177e4 422 unsigned int xval;
83a5b72a
SK		 423 if(reg == AC97_GPIO_STATUS) {
424 outl(val, VIAREG(chip, GPI_STATUS));
425 return;
426 }
1da177e4
LT		 427 xval = !ac97->num ? VIA_REG_AC97_CODEC_ID_PRIMARY : VIA_REG_AC97_CODEC_ID_SECONDARY;
428 xval <<= VIA_REG_AC97_CODEC_ID_SHIFT;
429 xval |= reg << VIA_REG_AC97_CMD_SHIFT;
430 xval |= val << VIA_REG_AC97_DATA_SHIFT;
431 snd_via82xx_codec_xwrite(chip, xval);
432 snd_via82xx_codec_ready(chip, ac97->num);
433}
434
e437e3d7 435static unsigned short snd_via82xx_codec_read(struct snd_ac97 *ac97, unsigned short reg)
1da177e4 436{
e437e3d7 437 struct via82xx_modem *chip = ac97->private_data;
1da177e4
LT		 438 unsigned int xval, val = 0xffff;
439 int again = 0;
440
441 xval = ac97->num << VIA_REG_AC97_CODEC_ID_SHIFT;
442 xval |= ac97->num ? VIA_REG_AC97_SECONDARY_VALID : VIA_REG_AC97_PRIMARY_VALID;
443 xval |= VIA_REG_AC97_READ;
444 xval |= (reg & 0x7f) << VIA_REG_AC97_CMD_SHIFT;
445 while (1) {
446 if (again++ > 3) {
473439e0
TI		 447 dev_err(chip->card->dev,
448 "codec_read: codec %i is not valid [0x%x]\n",
e437e3d7 449 ac97->num, snd_via82xx_codec_xread(chip));
1da177e4
LT		 450 return 0xffff;
451 }
452 snd_via82xx_codec_xwrite(chip, xval);
453 udelay (20);
454 if (snd_via82xx_codec_valid(chip, ac97->num) >= 0) {
455 udelay(25);
456 val = snd_via82xx_codec_xread(chip);
457 break;
458 }
459 }
460 return val & 0xffff;
461}
462
e437e3d7 463static void snd_via82xx_channel_reset(struct via82xx_modem *chip, struct viadev *viadev)
1da177e4
LT		 464{
465 outb(VIA_REG_CTRL_PAUSE | VIA_REG_CTRL_TERMINATE | VIA_REG_CTRL_RESET,
466 VIADEV_REG(viadev, OFFSET_CONTROL));
467 inb(VIADEV_REG(viadev, OFFSET_CONTROL));
468 udelay(50);
469 /* disable interrupts */
470 outb(0x00, VIADEV_REG(viadev, OFFSET_CONTROL));
471 /* clear interrupts */
472 outb(0x03, VIADEV_REG(viadev, OFFSET_STATUS));
473 outb(0x00, VIADEV_REG(viadev, OFFSET_TYPE)); /* for via686 */
474 // outl(0, VIADEV_REG(viadev, OFFSET_CURR_PTR));
475 viadev->lastpos = 0;
476}
477
478
479/*
480 * Interrupt handler
481 */
482
7d12e780 483static irqreturn_t snd_via82xx_interrupt(int irq, void *dev_id)
1da177e4 484{
e437e3d7 485 struct via82xx_modem *chip = dev_id;
1da177e4
LT		 486 unsigned int status;
487 unsigned int i;
488
489 status = inl(VIAREG(chip, SGD_SHADOW));
490 if (! (status & chip->intr_mask)) {
491 return IRQ_NONE;
492 }
493// _skip_sgd:
494
495 /* check status for each stream */
496 spin_lock(&chip->reg_lock);
497 for (i = 0; i < chip->num_devs; i++) {
e437e3d7 498 struct viadev *viadev = &chip->devs[i];
1da177e4
LT		 499 unsigned char c_status = inb(VIADEV_REG(viadev, OFFSET_STATUS));
500 c_status &= (VIA_REG_STAT_EOL|VIA_REG_STAT_FLAG|VIA_REG_STAT_STOPPED);
501 if (! c_status)
502 continue;
503 if (viadev->substream && viadev->running) {
504 spin_unlock(&chip->reg_lock);
505 snd_pcm_period_elapsed(viadev->substream);
506 spin_lock(&chip->reg_lock);
507 }
508 outb(c_status, VIADEV_REG(viadev, OFFSET_STATUS)); /* ack */
509 }
510 spin_unlock(&chip->reg_lock);
511 return IRQ_HANDLED;
512}
513
514/*
515 * PCM callbacks
516 */
517
518/*
519 * trigger callback
520 */
e437e3d7 521static int snd_via82xx_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
1da177e4 522{
e437e3d7
TI		 523 struct via82xx_modem *chip = snd_pcm_substream_chip(substream);
524 struct viadev *viadev = substream->runtime->private_data;
1da177e4
LT		 525 unsigned char val = 0;
526
527 switch (cmd) {
528 case SNDRV_PCM_TRIGGER_START:
41e4845c 529 case SNDRV_PCM_TRIGGER_SUSPEND:
1da177e4
LT		 530 val |= VIA_REG_CTRL_START;
531 viadev->running = 1;
532 break;
533 case SNDRV_PCM_TRIGGER_STOP:
534 val = VIA_REG_CTRL_TERMINATE;
535 viadev->running = 0;
536 break;
537 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
538 val |= VIA_REG_CTRL_PAUSE;
539 viadev->running = 0;
540 break;
541 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
542 viadev->running = 1;
543 break;
544 default:
545 return -EINVAL;
546 }
547 outb(val, VIADEV_REG(viadev, OFFSET_CONTROL));
548 if (cmd == SNDRV_PCM_TRIGGER_STOP)
549 snd_via82xx_channel_reset(chip, viadev);
550 return 0;
551}
552
1da177e4
LT		 553/*
554 * pointer callbacks
555 */
556
557/*
558 * calculate the linear position at the given sg-buffer index and the rest count
559 */
560
561#define check_invalid_pos(viadev,pos) \
e437e3d7
TI		 562 ((pos) < viadev->lastpos && ((pos) >= viadev->bufsize2 ||\
563 viadev->lastpos < viadev->bufsize2))
1da177e4 564
473439e0
TI		 565static inline unsigned int calc_linear_pos(struct via82xx_modem *chip,
566 struct viadev *viadev,
567 unsigned int idx,
e437e3d7 568 unsigned int count)
1da177e4
LT		 569{
570 unsigned int size, res;
571
572 size = viadev->idx_table[idx].size;
573 res = viadev->idx_table[idx].offset + size - count;
574
575 /* check the validity of the calculated position */
576 if (size < count) {
473439e0
TI		 577 dev_err(chip->card->dev,
578 "invalid via82xx_cur_ptr (size = %d, count = %d)\n",
e437e3d7 579 (int)size, (int)count);
1da177e4
LT		 580 res = viadev->lastpos;
581 } else if (check_invalid_pos(viadev, res)) {
582#ifdef POINTER_DEBUG
473439e0
TI		 583 dev_dbg(chip->card->dev,
584 "fail: idx = %i/%i, lastpos = 0x%x, bufsize2 = 0x%x, offsize = 0x%x, size = 0x%x, count = 0x%x\n",
585 idx, viadev->tbl_entries, viadev->lastpos,
e437e3d7
TI		 586 viadev->bufsize2, viadev->idx_table[idx].offset,
587 viadev->idx_table[idx].size, count);
1da177e4
LT		 588#endif
589 if (count && size < count) {
473439e0
TI		 590 dev_dbg(chip->card->dev,
591 "invalid via82xx_cur_ptr, using last valid pointer\n");
1da177e4
LT		 592 res = viadev->lastpos;
593 } else {
594 if (! count)
595 /* bogus count 0 on the DMA boundary? */
596 res = viadev->idx_table[idx].offset;
597 else
e437e3d7
TI		 598 /* count register returns full size
599 * when end of buffer is reached
600 */
1da177e4
LT		 601 res = viadev->idx_table[idx].offset + size;
602 if (check_invalid_pos(viadev, res)) {
473439e0
TI		 603 dev_dbg(chip->card->dev,
604 "invalid via82xx_cur_ptr (2), using last valid pointer\n");
1da177e4
LT		 605 res = viadev->lastpos;
606 }
607 }
608 }
609 viadev->lastpos = res; /* remember the last position */
610 if (res >= viadev->bufsize)
611 res -= viadev->bufsize;
612 return res;
613}
614
615/*
616 * get the current pointer on via686
617 */
e437e3d7 618static snd_pcm_uframes_t snd_via686_pcm_pointer(struct snd_pcm_substream *substream)
1da177e4 619{
e437e3d7
TI		 620 struct via82xx_modem *chip = snd_pcm_substream_chip(substream);
621 struct viadev *viadev = substream->runtime->private_data;
1da177e4
LT		 622 unsigned int idx, ptr, count, res;
623
da3cec35
TI		 624 if (snd_BUG_ON(!viadev->tbl_entries))
625 return 0;
1da177e4
LT		 626 if (!(inb(VIADEV_REG(viadev, OFFSET_STATUS)) & VIA_REG_STAT_ACTIVE))
627 return 0;
628
629 spin_lock(&chip->reg_lock);
630 count = inl(VIADEV_REG(viadev, OFFSET_CURR_COUNT)) & 0xffffff;
631 /* The via686a does not have the current index register,
632 * so we need to calculate the index from CURR_PTR.
633 */
634 ptr = inl(VIADEV_REG(viadev, OFFSET_CURR_PTR));
635 if (ptr <= (unsigned int)viadev->table.addr)
636 idx = 0;
637 else /* CURR_PTR holds the address + 8 */
e437e3d7
TI		 638 idx = ((ptr - (unsigned int)viadev->table.addr) / 8 - 1) %
639 viadev->tbl_entries;
473439e0 640 res = calc_linear_pos(chip, viadev, idx, count);
1da177e4
LT		 641 spin_unlock(&chip->reg_lock);
642
643 return bytes_to_frames(substream->runtime, res);
644}
645
646/*
647 * hw_params callback:
648 * allocate the buffer and build up the buffer description table
649 */
e437e3d7
TI		 650static int snd_via82xx_hw_params(struct snd_pcm_substream *substream,
651 struct snd_pcm_hw_params *hw_params)
1da177e4 652{
e437e3d7
TI		 653 struct via82xx_modem *chip = snd_pcm_substream_chip(substream);
654 struct viadev *viadev = substream->runtime->private_data;
1da177e4
LT		 655 int err;
656
657 err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
658 if (err < 0)
659 return err;
660 err = build_via_table(viadev, substream, chip->pci,
661 params_periods(hw_params),
662 params_period_bytes(hw_params));
663 if (err < 0)
664 return err;
665
666 snd_ac97_write(chip->ac97, AC97_LINE1_RATE, params_rate(hw_params));
667 snd_ac97_write(chip->ac97, AC97_LINE1_LEVEL, 0);
668
669 return 0;
670}
671
672/*
673 * hw_free callback:
674 * clean up the buffer description table and release the buffer
675 */
e437e3d7 676static int snd_via82xx_hw_free(struct snd_pcm_substream *substream)
1da177e4 677{
e437e3d7
TI		 678 struct via82xx_modem *chip = snd_pcm_substream_chip(substream);
679 struct viadev *viadev = substream->runtime->private_data;
1da177e4
LT		 680
681 clean_via_table(viadev, substream, chip->pci);
682 snd_pcm_lib_free_pages(substream);
683 return 0;
684}
685
686
687/*
688 * set up the table pointer
689 */
e437e3d7 690static void snd_via82xx_set_table_ptr(struct via82xx_modem *chip, struct viadev *viadev)
1da177e4
LT		 691{
692 snd_via82xx_codec_ready(chip, chip->ac97_secondary);
693 outl((u32)viadev->table.addr, VIADEV_REG(viadev, OFFSET_TABLE_PTR));
694 udelay(20);
695 snd_via82xx_codec_ready(chip, chip->ac97_secondary);
696}
697
698/*
699 * prepare callback for playback and capture
700 */
e437e3d7 701static int snd_via82xx_pcm_prepare(struct snd_pcm_substream *substream)
1da177e4 702{
e437e3d7
TI		 703 struct via82xx_modem *chip = snd_pcm_substream_chip(substream);
704 struct viadev *viadev = substream->runtime->private_data;
1da177e4
LT		 705
706 snd_via82xx_channel_reset(chip, viadev);
707 /* this must be set after channel_reset */
708 snd_via82xx_set_table_ptr(chip, viadev);
709 outb(VIA_REG_TYPE_AUTOSTART|VIA_REG_TYPE_INT_EOL|VIA_REG_TYPE_INT_FLAG,
710 VIADEV_REG(viadev, OFFSET_TYPE));
711 return 0;
712}
713
714/*
715 * pcm hardware definition, identical for both playback and capture
716 */
e437e3d7 717static struct snd_pcm_hardware snd_via82xx_hw =
1da177e4
LT		 718{
719 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
720 SNDRV_PCM_INFO_BLOCK_TRANSFER |
721 SNDRV_PCM_INFO_MMAP_VALID |
41e4845c 722 /* SNDRV_PCM_INFO_RESUME | */
1da177e4
LT		 723 SNDRV_PCM_INFO_PAUSE),
724 .formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE,
725 .rates = SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_KNOT,
726 .rate_min = 8000,
727 .rate_max = 16000,
728 .channels_min = 1,
729 .channels_max = 1,
730 .buffer_bytes_max = 128 * 1024,
731 .period_bytes_min = 32,
732 .period_bytes_max = 128 * 1024,
733 .periods_min = 2,
734 .periods_max = VIA_TABLE_SIZE / 2,
735 .fifo_size = 0,
736};
737
738
739/*
740 * open callback skeleton
741 */
e437e3d7
TI		 742static int snd_via82xx_modem_pcm_open(struct via82xx_modem *chip, struct viadev *viadev,
743 struct snd_pcm_substream *substream)
1da177e4 744{
e437e3d7 745 struct snd_pcm_runtime *runtime = substream->runtime;
1da177e4
LT		 746 int err;
747 static unsigned int rates[] = { 8000, 9600, 12000, 16000 };
e437e3d7 748 static struct snd_pcm_hw_constraint_list hw_constraints_rates = {
1da177e4
LT		 749 .count = ARRAY_SIZE(rates),
750 .list = rates,
751 .mask = 0,
752 };
753
754 runtime->hw = snd_via82xx_hw;
755
e437e3d7
TI		 756 if ((err = snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
757 &hw_constraints_rates)) < 0)
1da177e4
LT		 758 return err;
759
760 /* we may remove following constaint when we modify table entries
761 in interrupt */
762 if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
763 return err;
764
765 runtime->private_data = viadev;
766 viadev->substream = substream;
767
768 return 0;
769}
770
771
772/*
773 * open callback for playback
774 */
e437e3d7 775static int snd_via82xx_playback_open(struct snd_pcm_substream *substream)
1da177e4 776{
e437e3d7
TI		 777 struct via82xx_modem *chip = snd_pcm_substream_chip(substream);
778 struct viadev *viadev = &chip->devs[chip->playback_devno + substream->number];
1da177e4
LT		 779
780 return snd_via82xx_modem_pcm_open(chip, viadev, substream);
781}
782
783/*
784 * open callback for capture
785 */
e437e3d7 786static int snd_via82xx_capture_open(struct snd_pcm_substream *substream)
1da177e4 787{
e437e3d7
TI		 788 struct via82xx_modem *chip = snd_pcm_substream_chip(substream);
789 struct viadev *viadev = &chip->devs[chip->capture_devno + substream->pcm->device];
1da177e4
LT		 790
791 return snd_via82xx_modem_pcm_open(chip, viadev, substream);
792}
793
794/*
795 * close callback
796 */
e437e3d7 797static int snd_via82xx_pcm_close(struct snd_pcm_substream *substream)
1da177e4 798{
e437e3d7 799 struct viadev *viadev = substream->runtime->private_data;
1da177e4
LT		 800
801 viadev->substream = NULL;
802 return 0;
803}
804
805
806/* via686 playback callbacks */
e437e3d7 807static struct snd_pcm_ops snd_via686_playback_ops = {
1da177e4
LT		 808 .open = snd_via82xx_playback_open,
809 .close = snd_via82xx_pcm_close,
810 .ioctl = snd_pcm_lib_ioctl,
811 .hw_params = snd_via82xx_hw_params,
812 .hw_free = snd_via82xx_hw_free,
813 .prepare = snd_via82xx_pcm_prepare,
83a5b72a 814 .trigger = snd_via82xx_pcm_trigger,
1da177e4
LT		 815 .pointer = snd_via686_pcm_pointer,
816 .page = snd_pcm_sgbuf_ops_page,
817};
818
819/* via686 capture callbacks */
e437e3d7 820static struct snd_pcm_ops snd_via686_capture_ops = {
1da177e4
LT		 821 .open = snd_via82xx_capture_open,
822 .close = snd_via82xx_pcm_close,
823 .ioctl = snd_pcm_lib_ioctl,
824 .hw_params = snd_via82xx_hw_params,
825 .hw_free = snd_via82xx_hw_free,
826 .prepare = snd_via82xx_pcm_prepare,
83a5b72a 827 .trigger = snd_via82xx_pcm_trigger,
1da177e4
LT		 828 .pointer = snd_via686_pcm_pointer,
829 .page = snd_pcm_sgbuf_ops_page,
830};
831
832
e437e3d7
TI		 833static void init_viadev(struct via82xx_modem *chip, int idx, unsigned int reg_offset,
834 int direction)
1da177e4
LT		 835{
836 chip->devs[idx].reg_offset = reg_offset;
837 chip->devs[idx].direction = direction;
838 chip->devs[idx].port = chip->port + reg_offset;
839}
840
841/*
842 * create a pcm instance for via686a/b
843 */
e23e7a14 844static int snd_via686_pcm_new(struct via82xx_modem *chip)
1da177e4 845{
e437e3d7 846 struct snd_pcm *pcm;
1da177e4
LT		 847 int err;
848
849 chip->playback_devno = 0;
850 chip->capture_devno = 1;
851 chip->num_devs = 2;
852 chip->intr_mask = 0x330000; /* FLAGS | EOL for MR, MW */
853
854 err = snd_pcm_new(chip->card, chip->card->shortname, 0, 1, 1, &pcm);
855 if (err < 0)
856 return err;
857 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via686_playback_ops);
858 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via686_capture_ops);
6632d198 859 pcm->dev_class = SNDRV_PCM_CLASS_MODEM;
1da177e4
LT		 860 pcm->private_data = chip;
861 strcpy(pcm->name, chip->card->shortname);
862 chip->pcms[0] = pcm;
863 init_viadev(chip, 0, VIA_REG_MO_STATUS, 0);
864 init_viadev(chip, 1, VIA_REG_MI_STATUS, 1);
865
866 if ((err = snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
e437e3d7
TI		 867 snd_dma_pci_data(chip->pci),
868 64*1024, 128*1024)) < 0)
1da177e4
LT		 869 return err;
870
871 return 0;
872}
873
874
875/*
876 * Mixer part
877 */
878
879
e437e3d7 880static void snd_via82xx_mixer_free_ac97_bus(struct snd_ac97_bus *bus)
1da177e4 881{
e437e3d7 882 struct via82xx_modem *chip = bus->private_data;
1da177e4
LT		 883 chip->ac97_bus = NULL;
884}
885
e437e3d7 886static void snd_via82xx_mixer_free_ac97(struct snd_ac97 *ac97)
1da177e4 887{
e437e3d7 888 struct via82xx_modem *chip = ac97->private_data;
1da177e4
LT		 889 chip->ac97 = NULL;
890}
891
892
e23e7a14 893static int snd_via82xx_mixer_new(struct via82xx_modem *chip)
1da177e4 894{
e437e3d7 895 struct snd_ac97_template ac97;
1da177e4 896 int err;
e437e3d7 897 static struct snd_ac97_bus_ops ops = {
1da177e4
LT		 898 .write = snd_via82xx_codec_write,
899 .read = snd_via82xx_codec_read,
900 .wait = snd_via82xx_codec_wait,
901 };
902
903 if ((err = snd_ac97_bus(chip->card, 0, &ops, chip, &chip->ac97_bus)) < 0)
904 return err;
905 chip->ac97_bus->private_free = snd_via82xx_mixer_free_ac97_bus;
906 chip->ac97_bus->clock = chip->ac97_clock;
1da177e4
LT		 907
908 memset(&ac97, 0, sizeof(ac97));
909 ac97.private_data = chip;
910 ac97.private_free = snd_via82xx_mixer_free_ac97;
911 ac97.pci = chip->pci;
f1a63a38 912 ac97.scaps = AC97_SCAP_SKIP_AUDIO | AC97_SCAP_POWER_SAVE;
1da177e4
LT		 913 ac97.num = chip->ac97_secondary;
914
915 if ((err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97)) < 0)
916 return err;
917
918 return 0;
919}
920
921
922/*
923 * proc interface
924 */
e437e3d7 925static void snd_via82xx_proc_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer)
1da177e4 926{
e437e3d7 927 struct via82xx_modem *chip = entry->private_data;
1da177e4
LT		 928 int i;
929
930 snd_iprintf(buffer, "%s\n\n", chip->card->longname);
931 for (i = 0; i < 0xa0; i += 4) {
932 snd_iprintf(buffer, "%02x: %08x\n", i, inl(chip->port + i));
933 }
934}
935
e23e7a14 936static void snd_via82xx_proc_init(struct via82xx_modem *chip)
1da177e4 937{
e437e3d7 938 struct snd_info_entry *entry;
1da177e4
LT		 939
940 if (! snd_card_proc_new(chip->card, "via82xx", &entry))
bf850204 941 snd_info_set_text_ops(entry, chip, snd_via82xx_proc_read);
1da177e4
LT		 942}
943
944/*
945 *
946 */
947
e437e3d7 948static int snd_via82xx_chip_init(struct via82xx_modem *chip)
1da177e4
LT		 949{
950 unsigned int val;
ef21ca24 951 unsigned long end_time;
1da177e4
LT		 952 unsigned char pval;
953
954 pci_read_config_byte(chip->pci, VIA_MC97_CTRL, &pval);
955 if((pval & VIA_MC97_CTRL_INIT) != VIA_MC97_CTRL_INIT) {
956 pci_write_config_byte(chip->pci, 0x44, pval|VIA_MC97_CTRL_INIT);
957 udelay(100);
958 }
959
960 pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval);
961 if (! (pval & VIA_ACLINK_C00_READY)) { /* codec not ready? */
962 /* deassert ACLink reset, force SYNC */
963 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL,
964 VIA_ACLINK_CTRL_ENABLE |
965 VIA_ACLINK_CTRL_RESET |
966 VIA_ACLINK_CTRL_SYNC);
967 udelay(100);
968#if 1 /* FIXME: should we do full reset here for all chip models? */
969 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, 0x00);
970 udelay(100);
971#else
972 /* deassert ACLink reset, force SYNC (warm AC'97 reset) */
973 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL,
974 VIA_ACLINK_CTRL_RESET|VIA_ACLINK_CTRL_SYNC);
975 udelay(2);
976#endif
977 /* ACLink on, deassert ACLink reset, VSR, SGD data out */
978 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT);
979 udelay(100);
980 }
981
982 pci_read_config_byte(chip->pci, VIA_ACLINK_CTRL, &pval);
983 if ((pval & VIA_ACLINK_CTRL_INIT) != VIA_ACLINK_CTRL_INIT) {
984 /* ACLink on, deassert ACLink reset, VSR, SGD data out */
985 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT);
986 udelay(100);
987 }
988
989 /* wait until codec ready */
ef21ca24 990 end_time = jiffies + msecs_to_jiffies(750);
1da177e4
LT		 991 do {
992 pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval);
993 if (pval & VIA_ACLINK_C00_READY) /* primary codec ready */
994 break;
d86d0193 995 schedule_timeout_uninterruptible(1);
ef21ca24 996 } while (time_before(jiffies, end_time));
1da177e4
LT		 997
998 if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY)
473439e0
TI		 999 dev_err(chip->card->dev,
1000 "AC'97 codec is not ready [0x%x]\n", val);
1da177e4
LT		 1001
1002 snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ |
1003 VIA_REG_AC97_SECONDARY_VALID |
1004 (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT));
ef21ca24 1005 end_time = jiffies + msecs_to_jiffies(750);
1da177e4
LT		 1006 snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ |
1007 VIA_REG_AC97_SECONDARY_VALID |
1008 (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT));
1009 do {
1010 if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_SECONDARY_VALID) {
1011 chip->ac97_secondary = 1;
1012 goto __ac97_ok2;
1013 }
d86d0193 1014 schedule_timeout_uninterruptible(1);
ef21ca24 1015 } while (time_before(jiffies, end_time));
1da177e4
LT		 1016 /* This is ok, the most of motherboards have only one codec */
1017
1018 __ac97_ok2:
1019
1020 /* route FM trap to IRQ, disable FM trap */
1021 // pci_write_config_byte(chip->pci, VIA_FM_NMI_CTRL, 0);
1022 /* disable all GPI interrupts */
1023 outl(0, VIAREG(chip, GPI_INTR));
1024
1025 return 0;
1026}
1027
c7561cd8 1028#ifdef CONFIG_PM_SLEEP
1da177e4
LT		 1029/*
1030 * power management
1031 */
68cb2b55 1032static int snd_via82xx_suspend(struct device *dev)
1da177e4 1033{
68cb2b55 1034 struct snd_card *card = dev_get_drvdata(dev);
57feb835 1035 struct via82xx_modem *chip = card->private_data;
1da177e4
LT		 1036 int i;
1037
57feb835 1038 snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
1da177e4 1039 for (i = 0; i < 2; i++)
57feb835 1040 snd_pcm_suspend_all(chip->pcms[i]);
1da177e4
LT		 1041 for (i = 0; i < chip->num_devs; i++)
1042 snd_via82xx_channel_reset(chip, &chip->devs[i]);
1043 synchronize_irq(chip->irq);
1044 snd_ac97_suspend(chip->ac97);
1da177e4
LT		 1045 return 0;
1046}
1047
68cb2b55 1048static int snd_via82xx_resume(struct device *dev)
1da177e4 1049{
68cb2b55 1050 struct snd_card *card = dev_get_drvdata(dev);
57feb835 1051 struct via82xx_modem *chip = card->private_data;
1da177e4
LT		 1052 int i;
1053
1da177e4
LT		 1054 snd_via82xx_chip_init(chip);
1055
1056 snd_ac97_resume(chip->ac97);
1057
1058 for (i = 0; i < chip->num_devs; i++)
1059 snd_via82xx_channel_reset(chip, &chip->devs[i]);
1060
57feb835 1061 snd_power_change_state(card, SNDRV_CTL_POWER_D0);
1da177e4
LT		 1062 return 0;
1063}
68cb2b55
TI		 1064
1065static SIMPLE_DEV_PM_OPS(snd_via82xx_pm, snd_via82xx_suspend, snd_via82xx_resume);
1066#define SND_VIA82XX_PM_OPS &snd_via82xx_pm
1067#else
1068#define SND_VIA82XX_PM_OPS NULL
c7561cd8 1069#endif /* CONFIG_PM_SLEEP */
1da177e4 1070
e437e3d7 1071static int snd_via82xx_free(struct via82xx_modem *chip)
1da177e4
LT		 1072{
1073 unsigned int i;
1074
1075 if (chip->irq < 0)
1076 goto __end_hw;
1077 /* disable interrupts */
1078 for (i = 0; i < chip->num_devs; i++)
1079 snd_via82xx_channel_reset(chip, &chip->devs[i]);
f000fd80 1080
1da177e4
LT		 1081 __end_hw:
1082 if (chip->irq >= 0)
e437e3d7 1083 free_irq(chip->irq, chip);
1da177e4
LT		 1084 pci_release_regions(chip->pci);
1085 pci_disable_device(chip->pci);
1086 kfree(chip);
1087 return 0;
1088}
1089
e437e3d7 1090static int snd_via82xx_dev_free(struct snd_device *device)
1da177e4 1091{
e437e3d7 1092 struct via82xx_modem *chip = device->device_data;
1da177e4
LT		 1093 return snd_via82xx_free(chip);
1094}
1095
e23e7a14
BP		 1096static int snd_via82xx_create(struct snd_card *card,
1097 struct pci_dev *pci,
1098 int chip_type,
1099 int revision,
1100 unsigned int ac97_clock,
1101 struct via82xx_modem **r_via)
1da177e4 1102{
e437e3d7 1103 struct via82xx_modem *chip;
1da177e4 1104 int err;
e437e3d7 1105 static struct snd_device_ops ops = {
1da177e4
LT		 1106 .dev_free = snd_via82xx_dev_free,
1107 };
1108
1109 if ((err = pci_enable_device(pci)) < 0)
1110 return err;
1111
e560d8d8 1112 if ((chip = kzalloc(sizeof(*chip), GFP_KERNEL)) == NULL) {
1da177e4
LT		 1113 pci_disable_device(pci);
1114 return -ENOMEM;
1115 }
1116
1117 spin_lock_init(&chip->reg_lock);
1118 chip->card = card;
1119 chip->pci = pci;
1120 chip->irq = -1;
1121
1122 if ((err = pci_request_regions(pci, card->driver)) < 0) {
1123 kfree(chip);
1124 pci_disable_device(pci);
1125 return err;
1126 }
1127 chip->port = pci_resource_start(pci, 0);
437a5a46 1128 if (request_irq(pci->irq, snd_via82xx_interrupt, IRQF_SHARED,
934c2b6d 1129 KBUILD_MODNAME, chip)) {
473439e0 1130 dev_err(card->dev, "unable to grab IRQ %d\n", pci->irq);
1da177e4
LT		 1131 snd_via82xx_free(chip);
1132 return -EBUSY;
1133 }
1134 chip->irq = pci->irq;
1135 if (ac97_clock >= 8000 && ac97_clock <= 48000)
1136 chip->ac97_clock = ac97_clock;
1137 synchronize_irq(chip->irq);
1138
1139 if ((err = snd_via82xx_chip_init(chip)) < 0) {
1140 snd_via82xx_free(chip);
1141 return err;
1142 }
1143
1144 if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
1145 snd_via82xx_free(chip);
1146 return err;
1147 }
1148
1149 /* The 8233 ac97 controller does not implement the master bit
1150 * in the pci command register. IMHO this is a violation of the PCI spec.
1151 * We call pci_set_master here because it does not hurt. */
1152 pci_set_master(pci);
1153
1da177e4
LT		 1154 *r_via = chip;
1155 return 0;
1156}
1157
1158
e23e7a14
BP		 1159static int snd_via82xx_probe(struct pci_dev *pci,
1160 const struct pci_device_id *pci_id)
1da177e4 1161{
e437e3d7
TI		 1162 struct snd_card *card;
1163 struct via82xx_modem *chip;
1da177e4
LT		 1164 int chip_type = 0, card_type;
1165 unsigned int i;
1166 int err;
1167
60c5772b 1168 err = snd_card_new(&pci->dev, index, id, THIS_MODULE, 0, &card);
e58de7ba
TI		 1169 if (err < 0)
1170 return err;
1da177e4
LT		 1171
1172 card_type = pci_id->driver_data;
1da177e4
LT		 1173 switch (card_type) {
1174 case TYPE_CARD_VIA82XX_MODEM:
1175 strcpy(card->driver, "VIA82XX-MODEM");
1176 sprintf(card->shortname, "VIA 82XX modem");
1177 break;
1178 default:
473439e0 1179 dev_err(card->dev, "invalid card type %d\n", card_type);
1da177e4
LT		 1180 err = -EINVAL;
1181 goto __error;
1182 }
1183
44c10138 1184 if ((err = snd_via82xx_create(card, pci, chip_type, pci->revision,
b7fe4622 1185 ac97_clock, &chip)) < 0)
1da177e4 1186 goto __error;
57feb835 1187 card->private_data = chip;
1da177e4
LT		 1188 if ((err = snd_via82xx_mixer_new(chip)) < 0)
1189 goto __error;
1190
1191 if ((err = snd_via686_pcm_new(chip)) < 0 )
1192 goto __error;
1193
1da177e4
LT		 1194 /* disable interrupts */
1195 for (i = 0; i < chip->num_devs; i++)
1196 snd_via82xx_channel_reset(chip, &chip->devs[i]);
1197
1198 sprintf(card->longname, "%s at 0x%lx, irq %d",
1199 card->shortname, chip->port, chip->irq);
1200
1201 snd_via82xx_proc_init(chip);
1202
1203 if ((err = snd_card_register(card)) < 0) {
1204 snd_card_free(card);
1205 return err;
1206 }
1207 pci_set_drvdata(pci, card);
1da177e4
LT		 1208 return 0;
1209
1210 __error:
1211 snd_card_free(card);
1212 return err;
1213}
1214
e23e7a14 1215static void snd_via82xx_remove(struct pci_dev *pci)
1da177e4
LT		 1216{
1217 snd_card_free(pci_get_drvdata(pci));
1da177e4
LT		 1218}
1219
e9f66d9b 1220static struct pci_driver via82xx_modem_driver = {
3733e424 1221 .name = KBUILD_MODNAME,
1da177e4
LT		 1222 .id_table = snd_via82xx_modem_ids,
1223 .probe = snd_via82xx_probe,
e23e7a14 1224 .remove = snd_via82xx_remove,
68cb2b55
TI		 1225 .driver = {
1226 .pm = SND_VIA82XX_PM_OPS,
1227 },
1da177e4
LT		 1228};
1229
e9f66d9b 1230module_pci_driver(via82xx_modem_driver);
Linux kernel - Deliverables
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