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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
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 *
Sasha Khapyorskyf01cc522005-10-10 11:45:31 +020029 * Sep. 2, 2004 Sasha Khapyorsky <sashak@alsa-project.org>
Linus Torvalds1da177e2005-04-16 15:20:36 -070030 * 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
53MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>");
54MODULE_DESCRIPTION("VIA VT82xx modem");
55MODULE_LICENSE("GPL");
56MODULE_SUPPORTED_DEVICE("{{VIA,VT82C686A/B/C modem,pci}}");
57
Clemens Ladischb7fe4622005-10-04 08:46:51 +020058static int index = -2; /* Exclude the first card */
59static char *id = SNDRV_DEFAULT_STR1; /* ID for this card */
60static int ac97_clock = 48000;
Linus Torvalds1da177e2005-04-16 15:20:36 -070061
Clemens Ladischb7fe4622005-10-04 08:46:51 +020062module_param(index, int, 0444);
Linus Torvalds1da177e2005-04-16 15:20:36 -070063MODULE_PARM_DESC(index, "Index value for VIA 82xx bridge.");
Clemens Ladischb7fe4622005-10-04 08:46:51 +020064module_param(id, charp, 0444);
Linus Torvalds1da177e2005-04-16 15:20:36 -070065MODULE_PARM_DESC(id, "ID string for VIA 82xx bridge.");
Clemens Ladischb7fe4622005-10-04 08:46:51 +020066module_param(ac97_clock, int, 0444);
Linus Torvalds1da177e2005-04-16 15:20:36 -070067MODULE_PARM_DESC(ac97_clock, "AC'97 codec clock (default 48000Hz).");
68
Takashi Iwai2b3e5842005-10-06 13:47:23 +020069/* just for backward compatibility */
70static int enable;
Takashi Iwai698444f2005-10-20 16:53:49 +020071module_param(enable, bool, 0444);
Takashi Iwai2b3e5842005-10-06 13:47:23 +020072
Linus Torvalds1da177e2005-04-16 15:20:36 -070073
74/*
75 * Direct registers
76 */
77
78#define VIAREG(via, x) ((via)->port + VIA_REG_##x)
79#define VIADEV_REG(viadev, x) ((viadev)->port + VIA_REG_##x)
80
81/* common offsets */
82#define VIA_REG_OFFSET_STATUS 0x00 /* byte - channel status */
83#define VIA_REG_STAT_ACTIVE 0x80 /* RO */
84#define VIA_REG_STAT_PAUSED 0x40 /* RO */
85#define VIA_REG_STAT_TRIGGER_QUEUED 0x08 /* RO */
86#define VIA_REG_STAT_STOPPED 0x04 /* RWC */
87#define VIA_REG_STAT_EOL 0x02 /* RWC */
88#define VIA_REG_STAT_FLAG 0x01 /* RWC */
89#define VIA_REG_OFFSET_CONTROL 0x01 /* byte - channel control */
90#define VIA_REG_CTRL_START 0x80 /* WO */
91#define VIA_REG_CTRL_TERMINATE 0x40 /* WO */
92#define VIA_REG_CTRL_AUTOSTART 0x20
93#define VIA_REG_CTRL_PAUSE 0x08 /* RW */
94#define VIA_REG_CTRL_INT_STOP 0x04
95#define VIA_REG_CTRL_INT_EOL 0x02
96#define VIA_REG_CTRL_INT_FLAG 0x01
97#define VIA_REG_CTRL_RESET 0x01 /* RW - probably reset? undocumented */
98#define VIA_REG_CTRL_INT (VIA_REG_CTRL_INT_FLAG | VIA_REG_CTRL_INT_EOL | VIA_REG_CTRL_AUTOSTART)
99#define VIA_REG_OFFSET_TYPE 0x02 /* byte - channel type (686 only) */
100#define VIA_REG_TYPE_AUTOSTART 0x80 /* RW - autostart at EOL */
101#define VIA_REG_TYPE_16BIT 0x20 /* RW */
102#define VIA_REG_TYPE_STEREO 0x10 /* RW */
103#define VIA_REG_TYPE_INT_LLINE 0x00
104#define VIA_REG_TYPE_INT_LSAMPLE 0x04
105#define VIA_REG_TYPE_INT_LESSONE 0x08
106#define VIA_REG_TYPE_INT_MASK 0x0c
107#define VIA_REG_TYPE_INT_EOL 0x02
108#define VIA_REG_TYPE_INT_FLAG 0x01
109#define VIA_REG_OFFSET_TABLE_PTR 0x04 /* dword - channel table pointer */
110#define VIA_REG_OFFSET_CURR_PTR 0x04 /* dword - channel current pointer */
111#define VIA_REG_OFFSET_STOP_IDX 0x08 /* dword - stop index, channel type, sample rate */
112#define VIA_REG_OFFSET_CURR_COUNT 0x0c /* dword - channel current count (24 bit) */
113#define VIA_REG_OFFSET_CURR_INDEX 0x0f /* byte - channel current index (for via8233 only) */
114
115#define DEFINE_VIA_REGSET(name,val) \
116enum {\
117 VIA_REG_##name##_STATUS = (val),\
118 VIA_REG_##name##_CONTROL = (val) + 0x01,\
119 VIA_REG_##name##_TYPE = (val) + 0x02,\
120 VIA_REG_##name##_TABLE_PTR = (val) + 0x04,\
121 VIA_REG_##name##_CURR_PTR = (val) + 0x04,\
122 VIA_REG_##name##_STOP_IDX = (val) + 0x08,\
123 VIA_REG_##name##_CURR_COUNT = (val) + 0x0c,\
124}
125
126/* modem block */
127DEFINE_VIA_REGSET(MO, 0x40);
128DEFINE_VIA_REGSET(MI, 0x50);
129
130/* AC'97 */
131#define VIA_REG_AC97 0x80 /* dword */
132#define VIA_REG_AC97_CODEC_ID_MASK (3<<30)
133#define VIA_REG_AC97_CODEC_ID_SHIFT 30
134#define VIA_REG_AC97_CODEC_ID_PRIMARY 0x00
135#define VIA_REG_AC97_CODEC_ID_SECONDARY 0x01
136#define VIA_REG_AC97_SECONDARY_VALID (1<<27)
137#define VIA_REG_AC97_PRIMARY_VALID (1<<25)
138#define VIA_REG_AC97_BUSY (1<<24)
139#define VIA_REG_AC97_READ (1<<23)
140#define VIA_REG_AC97_CMD_SHIFT 16
141#define VIA_REG_AC97_CMD_MASK 0x7e
142#define VIA_REG_AC97_DATA_SHIFT 0
143#define VIA_REG_AC97_DATA_MASK 0xffff
144
145#define VIA_REG_SGD_SHADOW 0x84 /* dword */
146#define VIA_REG_SGD_STAT_PB_FLAG (1<<0)
147#define VIA_REG_SGD_STAT_CP_FLAG (1<<1)
148#define VIA_REG_SGD_STAT_FM_FLAG (1<<2)
149#define VIA_REG_SGD_STAT_PB_EOL (1<<4)
150#define VIA_REG_SGD_STAT_CP_EOL (1<<5)
151#define VIA_REG_SGD_STAT_FM_EOL (1<<6)
152#define VIA_REG_SGD_STAT_PB_STOP (1<<8)
153#define VIA_REG_SGD_STAT_CP_STOP (1<<9)
154#define VIA_REG_SGD_STAT_FM_STOP (1<<10)
155#define VIA_REG_SGD_STAT_PB_ACTIVE (1<<12)
156#define VIA_REG_SGD_STAT_CP_ACTIVE (1<<13)
157#define VIA_REG_SGD_STAT_FM_ACTIVE (1<<14)
158#define VIA_REG_SGD_STAT_MR_FLAG (1<<16)
159#define VIA_REG_SGD_STAT_MW_FLAG (1<<17)
160#define VIA_REG_SGD_STAT_MR_EOL (1<<20)
161#define VIA_REG_SGD_STAT_MW_EOL (1<<21)
162#define VIA_REG_SGD_STAT_MR_STOP (1<<24)
163#define VIA_REG_SGD_STAT_MW_STOP (1<<25)
164#define VIA_REG_SGD_STAT_MR_ACTIVE (1<<28)
165#define VIA_REG_SGD_STAT_MW_ACTIVE (1<<29)
166
167#define VIA_REG_GPI_STATUS 0x88
168#define VIA_REG_GPI_INTR 0x8c
169
170#define VIA_TBL_BIT_FLAG 0x40000000
171#define VIA_TBL_BIT_EOL 0x80000000
172
173/* pci space */
174#define VIA_ACLINK_STAT 0x40
175#define VIA_ACLINK_C11_READY 0x20
176#define VIA_ACLINK_C10_READY 0x10
177#define VIA_ACLINK_C01_READY 0x04 /* secondary codec ready */
178#define VIA_ACLINK_LOWPOWER 0x02 /* low-power state */
179#define VIA_ACLINK_C00_READY 0x01 /* primary codec ready */
180#define VIA_ACLINK_CTRL 0x41
181#define VIA_ACLINK_CTRL_ENABLE 0x80 /* 0: disable, 1: enable */
182#define VIA_ACLINK_CTRL_RESET 0x40 /* 0: assert, 1: de-assert */
183#define VIA_ACLINK_CTRL_SYNC 0x20 /* 0: release SYNC, 1: force SYNC hi */
184#define VIA_ACLINK_CTRL_SDO 0x10 /* 0: release SDO, 1: force SDO hi */
185#define VIA_ACLINK_CTRL_VRA 0x08 /* 0: disable VRA, 1: enable VRA */
186#define VIA_ACLINK_CTRL_PCM 0x04 /* 0: disable PCM, 1: enable PCM */
187#define VIA_ACLINK_CTRL_FM 0x02 /* via686 only */
188#define VIA_ACLINK_CTRL_SB 0x01 /* via686 only */
189#define VIA_ACLINK_CTRL_INIT (VIA_ACLINK_CTRL_ENABLE|\
190 VIA_ACLINK_CTRL_RESET|\
191 VIA_ACLINK_CTRL_PCM)
192#define VIA_FUNC_ENABLE 0x42
193#define VIA_FUNC_MIDI_PNP 0x80 /* FIXME: it's 0x40 in the datasheet! */
194#define VIA_FUNC_MIDI_IRQMASK 0x40 /* FIXME: not documented! */
195#define VIA_FUNC_RX2C_WRITE 0x20
196#define VIA_FUNC_SB_FIFO_EMPTY 0x10
197#define VIA_FUNC_ENABLE_GAME 0x08
198#define VIA_FUNC_ENABLE_FM 0x04
199#define VIA_FUNC_ENABLE_MIDI 0x02
200#define VIA_FUNC_ENABLE_SB 0x01
201#define VIA_PNP_CONTROL 0x43
202#define VIA_MC97_CTRL 0x44
203#define VIA_MC97_CTRL_ENABLE 0x80
204#define VIA_MC97_CTRL_SECONDARY 0x40
205#define VIA_MC97_CTRL_INIT (VIA_MC97_CTRL_ENABLE|\
206 VIA_MC97_CTRL_SECONDARY)
207
208
Linus Torvalds1da177e2005-04-16 15:20:36 -0700209/*
210 * pcm stream
211 */
212
213struct snd_via_sg_table {
214 unsigned int offset;
215 unsigned int size;
216} ;
217
218#define VIA_TABLE_SIZE 255
219
Takashi Iwaie437e3d2005-11-17 15:06:15 +0100220struct viadev {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700221 unsigned int reg_offset;
222 unsigned long port;
223 int direction; /* playback = 0, capture = 1 */
Takashi Iwaie437e3d2005-11-17 15:06:15 +0100224 struct snd_pcm_substream *substream;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700225 int running;
226 unsigned int tbl_entries; /* # descriptors */
227 struct snd_dma_buffer table;
228 struct snd_via_sg_table *idx_table;
229 /* for recovery from the unexpected pointer */
230 unsigned int lastpos;
231 unsigned int bufsize;
232 unsigned int bufsize2;
233};
234
235enum { TYPE_CARD_VIA82XX_MODEM = 1 };
236
237#define VIA_MAX_MODEM_DEVS 2
238
Takashi Iwaie437e3d2005-11-17 15:06:15 +0100239struct via82xx_modem {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700240 int irq;
241
242 unsigned long port;
243
244 unsigned int intr_mask; /* SGD_SHADOW mask to check interrupts */
245
246 struct pci_dev *pci;
Takashi Iwaie437e3d2005-11-17 15:06:15 +0100247 struct snd_card *card;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700248
249 unsigned int num_devs;
250 unsigned int playback_devno, capture_devno;
Takashi Iwaie437e3d2005-11-17 15:06:15 +0100251 struct viadev devs[VIA_MAX_MODEM_DEVS];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700252
Takashi Iwaie437e3d2005-11-17 15:06:15 +0100253 struct snd_pcm *pcms[2];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700254
Takashi Iwaie437e3d2005-11-17 15:06:15 +0100255 struct snd_ac97_bus *ac97_bus;
256 struct snd_ac97 *ac97;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700257 unsigned int ac97_clock;
258 unsigned int ac97_secondary; /* secondary AC'97 codec is present */
259
260 spinlock_t reg_lock;
Takashi Iwaie437e3d2005-11-17 15:06:15 +0100261 struct snd_info_entry *proc_entry;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700262};
263
Takashi Iwaif40b6892006-07-05 16:51:05 +0200264static struct pci_device_id snd_via82xx_modem_ids[] = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700265 { 0x1106, 0x3068, PCI_ANY_ID, PCI_ANY_ID, 0, 0, TYPE_CARD_VIA82XX_MODEM, },
266 { 0, }
267};
268
269MODULE_DEVICE_TABLE(pci, snd_via82xx_modem_ids);
270
271/*
272 */
273
274/*
275 * allocate and initialize the descriptor buffers
276 * periods = number of periods
277 * fragsize = period size in bytes
278 */
Takashi Iwaie437e3d2005-11-17 15:06:15 +0100279static int build_via_table(struct viadev *dev, struct snd_pcm_substream *substream,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700280 struct pci_dev *pci,
281 unsigned int periods, unsigned int fragsize)
282{
283 unsigned int i, idx, ofs, rest;
Takashi Iwaie437e3d2005-11-17 15:06:15 +0100284 struct via82xx_modem *chip = snd_pcm_substream_chip(substream);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700285 struct snd_sg_buf *sgbuf = snd_pcm_substream_sgbuf(substream);
286
287 if (dev->table.area == NULL) {
288 /* the start of each lists must be aligned to 8 bytes,
289 * but the kernel pages are much bigger, so we don't care
290 */
291 if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(chip->pci),
292 PAGE_ALIGN(VIA_TABLE_SIZE * 2 * 8),
293 &dev->table) < 0)
294 return -ENOMEM;
295 }
296 if (! dev->idx_table) {
297 dev->idx_table = kmalloc(sizeof(*dev->idx_table) * VIA_TABLE_SIZE, GFP_KERNEL);
298 if (! dev->idx_table)
299 return -ENOMEM;
300 }
301
302 /* fill the entries */
303 idx = 0;
304 ofs = 0;
305 for (i = 0; i < periods; i++) {
306 rest = fragsize;
307 /* fill descriptors for a period.
308 * a period can be split to several descriptors if it's
309 * over page boundary.
310 */
311 do {
312 unsigned int r;
313 unsigned int flag;
314
315 if (idx >= VIA_TABLE_SIZE) {
316 snd_printk(KERN_ERR "via82xx: too much table size!\n");
317 return -EINVAL;
318 }
319 ((u32 *)dev->table.area)[idx << 1] = cpu_to_le32((u32)snd_pcm_sgbuf_get_addr(sgbuf, ofs));
320 r = PAGE_SIZE - (ofs % PAGE_SIZE);
321 if (rest < r)
322 r = rest;
323 rest -= r;
324 if (! rest) {
325 if (i == periods - 1)
326 flag = VIA_TBL_BIT_EOL; /* buffer boundary */
327 else
328 flag = VIA_TBL_BIT_FLAG; /* period boundary */
329 } else
330 flag = 0; /* period continues to the next */
331 // printk("via: tbl %d: at %d size %d (rest %d)\n", idx, ofs, r, rest);
332 ((u32 *)dev->table.area)[(idx<<1) + 1] = cpu_to_le32(r | flag);
333 dev->idx_table[idx].offset = ofs;
334 dev->idx_table[idx].size = r;
335 ofs += r;
336 idx++;
337 } while (rest > 0);
338 }
339 dev->tbl_entries = idx;
340 dev->bufsize = periods * fragsize;
341 dev->bufsize2 = dev->bufsize / 2;
342 return 0;
343}
344
345
Takashi Iwaie437e3d2005-11-17 15:06:15 +0100346static int clean_via_table(struct viadev *dev, struct snd_pcm_substream *substream,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700347 struct pci_dev *pci)
348{
349 if (dev->table.area) {
350 snd_dma_free_pages(&dev->table);
351 dev->table.area = NULL;
352 }
Jesper Juhl4d572772005-05-30 17:30:32 +0200353 kfree(dev->idx_table);
354 dev->idx_table = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700355 return 0;
356}
357
358/*
359 * Basic I/O
360 */
361
Takashi Iwaie437e3d2005-11-17 15:06:15 +0100362static inline unsigned int snd_via82xx_codec_xread(struct via82xx_modem *chip)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700363{
364 return inl(VIAREG(chip, AC97));
365}
366
Takashi Iwaie437e3d2005-11-17 15:06:15 +0100367static inline void snd_via82xx_codec_xwrite(struct via82xx_modem *chip, unsigned int val)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700368{
369 outl(val, VIAREG(chip, AC97));
370}
371
Takashi Iwaie437e3d2005-11-17 15:06:15 +0100372static int snd_via82xx_codec_ready(struct via82xx_modem *chip, int secondary)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700373{
374 unsigned int timeout = 1000; /* 1ms */
375 unsigned int val;
376
377 while (timeout-- > 0) {
378 udelay(1);
379 if (!((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY))
380 return val & 0xffff;
381 }
Takashi Iwaie437e3d2005-11-17 15:06:15 +0100382 snd_printk(KERN_ERR "codec_ready: codec %i is not ready [0x%x]\n",
383 secondary, snd_via82xx_codec_xread(chip));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700384 return -EIO;
385}
386
Takashi Iwaie437e3d2005-11-17 15:06:15 +0100387static int snd_via82xx_codec_valid(struct via82xx_modem *chip, int secondary)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700388{
389 unsigned int timeout = 1000; /* 1ms */
390 unsigned int val, val1;
391 unsigned int stat = !secondary ? VIA_REG_AC97_PRIMARY_VALID :
392 VIA_REG_AC97_SECONDARY_VALID;
393
394 while (timeout-- > 0) {
395 val = snd_via82xx_codec_xread(chip);
396 val1 = val & (VIA_REG_AC97_BUSY | stat);
397 if (val1 == stat)
398 return val & 0xffff;
399 udelay(1);
400 }
401 return -EIO;
402}
403
Takashi Iwaie437e3d2005-11-17 15:06:15 +0100404static void snd_via82xx_codec_wait(struct snd_ac97 *ac97)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700405{
Takashi Iwaie437e3d2005-11-17 15:06:15 +0100406 struct via82xx_modem *chip = ac97->private_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700407 int err;
408 err = snd_via82xx_codec_ready(chip, ac97->num);
409 /* here we need to wait fairly for long time.. */
Nishanth Aravamudanef21ca22005-07-09 10:13:22 +0200410 msleep(500);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700411}
412
Takashi Iwaie437e3d2005-11-17 15:06:15 +0100413static void snd_via82xx_codec_write(struct snd_ac97 *ac97,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700414 unsigned short reg,
415 unsigned short val)
416{
Takashi Iwaie437e3d2005-11-17 15:06:15 +0100417 struct via82xx_modem *chip = ac97->private_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700418 unsigned int xval;
Sasha Khapyorsky83a5b722005-05-29 15:10:07 +0200419 if(reg == AC97_GPIO_STATUS) {
420 outl(val, VIAREG(chip, GPI_STATUS));
421 return;
422 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700423 xval = !ac97->num ? VIA_REG_AC97_CODEC_ID_PRIMARY : VIA_REG_AC97_CODEC_ID_SECONDARY;
424 xval <<= VIA_REG_AC97_CODEC_ID_SHIFT;
425 xval |= reg << VIA_REG_AC97_CMD_SHIFT;
426 xval |= val << VIA_REG_AC97_DATA_SHIFT;
427 snd_via82xx_codec_xwrite(chip, xval);
428 snd_via82xx_codec_ready(chip, ac97->num);
429}
430
Takashi Iwaie437e3d2005-11-17 15:06:15 +0100431static unsigned short snd_via82xx_codec_read(struct snd_ac97 *ac97, unsigned short reg)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700432{
Takashi Iwaie437e3d2005-11-17 15:06:15 +0100433 struct via82xx_modem *chip = ac97->private_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700434 unsigned int xval, val = 0xffff;
435 int again = 0;
436
437 xval = ac97->num << VIA_REG_AC97_CODEC_ID_SHIFT;
438 xval |= ac97->num ? VIA_REG_AC97_SECONDARY_VALID : VIA_REG_AC97_PRIMARY_VALID;
439 xval |= VIA_REG_AC97_READ;
440 xval |= (reg & 0x7f) << VIA_REG_AC97_CMD_SHIFT;
441 while (1) {
442 if (again++ > 3) {
Takashi Iwaie437e3d2005-11-17 15:06:15 +0100443 snd_printk(KERN_ERR "codec_read: codec %i is not valid [0x%x]\n",
444 ac97->num, snd_via82xx_codec_xread(chip));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700445 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
Takashi Iwaie437e3d2005-11-17 15:06:15 +0100458static void snd_via82xx_channel_reset(struct via82xx_modem *chip, struct viadev *viadev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700459{
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
David Howells7d12e782006-10-05 14:55:46 +0100478static irqreturn_t snd_via82xx_interrupt(int irq, void *dev_id)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700479{
Takashi Iwaie437e3d2005-11-17 15:06:15 +0100480 struct via82xx_modem *chip = dev_id;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700481 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++) {
Takashi Iwaie437e3d2005-11-17 15:06:15 +0100493 struct viadev *viadev = &chip->devs[i];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700494 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 */
Takashi Iwaie437e3d2005-11-17 15:06:15 +0100516static int snd_via82xx_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700517{
Takashi Iwaie437e3d2005-11-17 15:06:15 +0100518 struct via82xx_modem *chip = snd_pcm_substream_chip(substream);
519 struct viadev *viadev = substream->runtime->private_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700520 unsigned char val = 0;
521
522 switch (cmd) {
523 case SNDRV_PCM_TRIGGER_START:
Jaroslav Kysela41e48452005-08-18 13:43:12 +0200524 case SNDRV_PCM_TRIGGER_SUSPEND:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700525 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
Linus Torvalds1da177e2005-04-16 15:20:36 -0700548/*
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) \
Takashi Iwaie437e3d2005-11-17 15:06:15 +0100557 ((pos) < viadev->lastpos && ((pos) >= viadev->bufsize2 ||\
558 viadev->lastpos < viadev->bufsize2))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700559
Takashi Iwaie437e3d2005-11-17 15:06:15 +0100560static inline unsigned int calc_linear_pos(struct viadev *viadev, unsigned int idx,
561 unsigned int count)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700562{
563 unsigned int size, res;
564
565 size = viadev->idx_table[idx].size;
566 res = viadev->idx_table[idx].offset + size - count;
567
568 /* check the validity of the calculated position */
569 if (size < count) {
Takashi Iwaie437e3d2005-11-17 15:06:15 +0100570 snd_printd(KERN_ERR "invalid via82xx_cur_ptr (size = %d, count = %d)\n",
571 (int)size, (int)count);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700572 res = viadev->lastpos;
573 } else if (check_invalid_pos(viadev, res)) {
574#ifdef POINTER_DEBUG
Takashi Iwaie437e3d2005-11-17 15:06:15 +0100575 printk(KERN_DEBUG "fail: idx = %i/%i, lastpos = 0x%x, "
576 "bufsize2 = 0x%x, offsize = 0x%x, size = 0x%x, "
577 "count = 0x%x\n", idx, viadev->tbl_entries, viadev->lastpos,
578 viadev->bufsize2, viadev->idx_table[idx].offset,
579 viadev->idx_table[idx].size, count);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700580#endif
581 if (count && size < count) {
Takashi Iwaie437e3d2005-11-17 15:06:15 +0100582 snd_printd(KERN_ERR "invalid via82xx_cur_ptr, "
583 "using last valid pointer\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700584 res = viadev->lastpos;
585 } else {
586 if (! count)
587 /* bogus count 0 on the DMA boundary? */
588 res = viadev->idx_table[idx].offset;
589 else
Takashi Iwaie437e3d2005-11-17 15:06:15 +0100590 /* count register returns full size
591 * when end of buffer is reached
592 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700593 res = viadev->idx_table[idx].offset + size;
594 if (check_invalid_pos(viadev, res)) {
Takashi Iwaie437e3d2005-11-17 15:06:15 +0100595 snd_printd(KERN_ERR "invalid via82xx_cur_ptr (2), "
596 "using last valid pointer\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700597 res = viadev->lastpos;
598 }
599 }
600 }
601 viadev->lastpos = res; /* remember the last position */
602 if (res >= viadev->bufsize)
603 res -= viadev->bufsize;
604 return res;
605}
606
607/*
608 * get the current pointer on via686
609 */
Takashi Iwaie437e3d2005-11-17 15:06:15 +0100610static snd_pcm_uframes_t snd_via686_pcm_pointer(struct snd_pcm_substream *substream)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700611{
Takashi Iwaie437e3d2005-11-17 15:06:15 +0100612 struct via82xx_modem *chip = snd_pcm_substream_chip(substream);
613 struct viadev *viadev = substream->runtime->private_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700614 unsigned int idx, ptr, count, res;
615
616 snd_assert(viadev->tbl_entries, return 0);
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 */
Takashi Iwaie437e3d2005-11-17 15:06:15 +0100629 idx = ((ptr - (unsigned int)viadev->table.addr) / 8 - 1) %
630 viadev->tbl_entries;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700631 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 */
Takashi Iwaie437e3d2005-11-17 15:06:15 +0100641static int snd_via82xx_hw_params(struct snd_pcm_substream *substream,
642 struct snd_pcm_hw_params *hw_params)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700643{
Takashi Iwaie437e3d2005-11-17 15:06:15 +0100644 struct via82xx_modem *chip = snd_pcm_substream_chip(substream);
645 struct viadev *viadev = substream->runtime->private_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700646 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 */
Takashi Iwaie437e3d2005-11-17 15:06:15 +0100667static int snd_via82xx_hw_free(struct snd_pcm_substream *substream)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700668{
Takashi Iwaie437e3d2005-11-17 15:06:15 +0100669 struct via82xx_modem *chip = snd_pcm_substream_chip(substream);
670 struct viadev *viadev = substream->runtime->private_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700671
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 */
Takashi Iwaie437e3d2005-11-17 15:06:15 +0100681static void snd_via82xx_set_table_ptr(struct via82xx_modem *chip, struct viadev *viadev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700682{
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 */
Takashi Iwaie437e3d2005-11-17 15:06:15 +0100692static int snd_via82xx_pcm_prepare(struct snd_pcm_substream *substream)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700693{
Takashi Iwaie437e3d2005-11-17 15:06:15 +0100694 struct via82xx_modem *chip = snd_pcm_substream_chip(substream);
695 struct viadev *viadev = substream->runtime->private_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700696
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 */
Takashi Iwaie437e3d2005-11-17 15:06:15 +0100708static struct snd_pcm_hardware snd_via82xx_hw =
Linus Torvalds1da177e2005-04-16 15:20:36 -0700709{
710 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
711 SNDRV_PCM_INFO_BLOCK_TRANSFER |
712 SNDRV_PCM_INFO_MMAP_VALID |
Jaroslav Kysela41e48452005-08-18 13:43:12 +0200713 /* SNDRV_PCM_INFO_RESUME | */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700714 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 */
Takashi Iwaie437e3d2005-11-17 15:06:15 +0100733static int snd_via82xx_modem_pcm_open(struct via82xx_modem *chip, struct viadev *viadev,
734 struct snd_pcm_substream *substream)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700735{
Takashi Iwaie437e3d2005-11-17 15:06:15 +0100736 struct snd_pcm_runtime *runtime = substream->runtime;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700737 int err;
738 static unsigned int rates[] = { 8000, 9600, 12000, 16000 };
Takashi Iwaie437e3d2005-11-17 15:06:15 +0100739 static struct snd_pcm_hw_constraint_list hw_constraints_rates = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700740 .count = ARRAY_SIZE(rates),
741 .list = rates,
742 .mask = 0,
743 };
744
745 runtime->hw = snd_via82xx_hw;
746
Takashi Iwaie437e3d2005-11-17 15:06:15 +0100747 if ((err = snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
748 &hw_constraints_rates)) < 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700749 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 */
Takashi Iwaie437e3d2005-11-17 15:06:15 +0100766static int snd_via82xx_playback_open(struct snd_pcm_substream *substream)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700767{
Takashi Iwaie437e3d2005-11-17 15:06:15 +0100768 struct via82xx_modem *chip = snd_pcm_substream_chip(substream);
769 struct viadev *viadev = &chip->devs[chip->playback_devno + substream->number];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700770
771 return snd_via82xx_modem_pcm_open(chip, viadev, substream);
772}
773
774/*
775 * open callback for capture
776 */
Takashi Iwaie437e3d2005-11-17 15:06:15 +0100777static int snd_via82xx_capture_open(struct snd_pcm_substream *substream)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700778{
Takashi Iwaie437e3d2005-11-17 15:06:15 +0100779 struct via82xx_modem *chip = snd_pcm_substream_chip(substream);
780 struct viadev *viadev = &chip->devs[chip->capture_devno + substream->pcm->device];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700781
782 return snd_via82xx_modem_pcm_open(chip, viadev, substream);
783}
784
785/*
786 * close callback
787 */
Takashi Iwaie437e3d2005-11-17 15:06:15 +0100788static int snd_via82xx_pcm_close(struct snd_pcm_substream *substream)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700789{
Takashi Iwaie437e3d2005-11-17 15:06:15 +0100790 struct viadev *viadev = substream->runtime->private_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700791
792 viadev->substream = NULL;
793 return 0;
794}
795
796
797/* via686 playback callbacks */
Takashi Iwaie437e3d2005-11-17 15:06:15 +0100798static struct snd_pcm_ops snd_via686_playback_ops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700799 .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,
Sasha Khapyorsky83a5b722005-05-29 15:10:07 +0200805 .trigger = snd_via82xx_pcm_trigger,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700806 .pointer = snd_via686_pcm_pointer,
807 .page = snd_pcm_sgbuf_ops_page,
808};
809
810/* via686 capture callbacks */
Takashi Iwaie437e3d2005-11-17 15:06:15 +0100811static struct snd_pcm_ops snd_via686_capture_ops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700812 .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,
Sasha Khapyorsky83a5b722005-05-29 15:10:07 +0200818 .trigger = snd_via82xx_pcm_trigger,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700819 .pointer = snd_via686_pcm_pointer,
820 .page = snd_pcm_sgbuf_ops_page,
821};
822
823
Takashi Iwaie437e3d2005-11-17 15:06:15 +0100824static void init_viadev(struct via82xx_modem *chip, int idx, unsigned int reg_offset,
825 int direction)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700826{
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 */
Takashi Iwaie437e3d2005-11-17 15:06:15 +0100835static int __devinit snd_via686_pcm_new(struct via82xx_modem *chip)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700836{
Takashi Iwaie437e3d2005-11-17 15:06:15 +0100837 struct snd_pcm *pcm;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700838 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);
Sasha Khapyorsky6632d192005-09-29 11:48:17 +0200850 pcm->dev_class = SNDRV_PCM_CLASS_MODEM;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700851 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,
Takashi Iwaie437e3d2005-11-17 15:06:15 +0100858 snd_dma_pci_data(chip->pci),
859 64*1024, 128*1024)) < 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700860 return err;
861
862 return 0;
863}
864
865
866/*
867 * Mixer part
868 */
869
870
Takashi Iwaie437e3d2005-11-17 15:06:15 +0100871static void snd_via82xx_mixer_free_ac97_bus(struct snd_ac97_bus *bus)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700872{
Takashi Iwaie437e3d2005-11-17 15:06:15 +0100873 struct via82xx_modem *chip = bus->private_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700874 chip->ac97_bus = NULL;
875}
876
Takashi Iwaie437e3d2005-11-17 15:06:15 +0100877static void snd_via82xx_mixer_free_ac97(struct snd_ac97 *ac97)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700878{
Takashi Iwaie437e3d2005-11-17 15:06:15 +0100879 struct via82xx_modem *chip = ac97->private_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700880 chip->ac97 = NULL;
881}
882
883
Takashi Iwaie437e3d2005-11-17 15:06:15 +0100884static int __devinit snd_via82xx_mixer_new(struct via82xx_modem *chip)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700885{
Takashi Iwaie437e3d2005-11-17 15:06:15 +0100886 struct snd_ac97_template ac97;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700887 int err;
Takashi Iwaie437e3d2005-11-17 15:06:15 +0100888 static struct snd_ac97_bus_ops ops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700889 .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;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700898
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;
Takashi Iwaif1a63a32006-10-24 18:25:29 +0200903 ac97.scaps = AC97_SCAP_SKIP_AUDIO | AC97_SCAP_POWER_SAVE;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700904 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 */
Takashi Iwaie437e3d2005-11-17 15:06:15 +0100916static void snd_via82xx_proc_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700917{
Takashi Iwaie437e3d2005-11-17 15:06:15 +0100918 struct via82xx_modem *chip = entry->private_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700919 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
Takashi Iwaie437e3d2005-11-17 15:06:15 +0100927static void __devinit snd_via82xx_proc_init(struct via82xx_modem *chip)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700928{
Takashi Iwaie437e3d2005-11-17 15:06:15 +0100929 struct snd_info_entry *entry;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700930
931 if (! snd_card_proc_new(chip->card, "via82xx", &entry))
Takashi Iwaibf850202006-04-28 15:13:41 +0200932 snd_info_set_text_ops(entry, chip, snd_via82xx_proc_read);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700933}
934
935/*
936 *
937 */
938
Takashi Iwaie437e3d2005-11-17 15:06:15 +0100939static int snd_via82xx_chip_init(struct via82xx_modem *chip)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700940{
941 unsigned int val;
Nishanth Aravamudanef21ca22005-07-09 10:13:22 +0200942 unsigned long end_time;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700943 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 */
Nishanth Aravamudanef21ca22005-07-09 10:13:22 +0200981 end_time = jiffies + msecs_to_jiffies(750);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700982 do {
983 pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval);
984 if (pval & VIA_ACLINK_C00_READY) /* primary codec ready */
985 break;
Nishanth Aravamudan8433a502005-10-24 15:02:37 +0200986 schedule_timeout_uninterruptible(1);
Nishanth Aravamudanef21ca22005-07-09 10:13:22 +0200987 } while (time_before(jiffies, end_time));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700988
989 if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY)
Takashi Iwai99b359b2005-10-20 18:26:44 +0200990 snd_printk(KERN_ERR "AC'97 codec is not ready [0x%x]\n", val);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700991
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));
Nishanth Aravamudanef21ca22005-07-09 10:13:22 +0200995 end_time = jiffies + msecs_to_jiffies(750);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700996 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 }
Nishanth Aravamudan8433a502005-10-24 15:02:37 +02001004 schedule_timeout_interruptible(1);
Nishanth Aravamudanef21ca22005-07-09 10:13:22 +02001005 } while (time_before(jiffies, end_time));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001006 /* 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 */
Takashi Iwai57feb832005-11-17 16:10:35 +01001022static int snd_via82xx_suspend(struct pci_dev *pci, pm_message_t state)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001023{
Takashi Iwai57feb832005-11-17 16:10:35 +01001024 struct snd_card *card = pci_get_drvdata(pci);
1025 struct via82xx_modem *chip = card->private_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001026 int i;
1027
Takashi Iwai57feb832005-11-17 16:10:35 +01001028 snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001029 for (i = 0; i < 2; i++)
Takashi Iwai57feb832005-11-17 16:10:35 +01001030 snd_pcm_suspend_all(chip->pcms[i]);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001031 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);
Takashi Iwai30b35392006-10-11 18:52:53 +02001035
Takashi Iwai57feb832005-11-17 16:10:35 +01001036 pci_disable_device(pci);
1037 pci_save_state(pci);
Takashi Iwai30b35392006-10-11 18:52:53 +02001038 pci_set_power_state(pci, pci_choose_state(pci, state));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001039 return 0;
1040}
1041
Takashi Iwai57feb832005-11-17 16:10:35 +01001042static int snd_via82xx_resume(struct pci_dev *pci)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001043{
Takashi Iwai57feb832005-11-17 16:10:35 +01001044 struct snd_card *card = pci_get_drvdata(pci);
1045 struct via82xx_modem *chip = card->private_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001046 int i;
1047
Takashi Iwai57feb832005-11-17 16:10:35 +01001048 pci_set_power_state(pci, PCI_D0);
Takashi Iwai30b35392006-10-11 18:52:53 +02001049 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 }
Takashi Iwai57feb832005-11-17 16:10:35 +01001056 pci_set_master(pci);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001057
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
Takashi Iwai57feb832005-11-17 16:10:35 +01001065 snd_power_change_state(card, SNDRV_CTL_POWER_D0);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001066 return 0;
1067}
1068#endif /* CONFIG_PM */
1069
Takashi Iwaie437e3d2005-11-17 15:06:15 +01001070static int snd_via82xx_free(struct via82xx_modem *chip)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001071{
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]);
1079 synchronize_irq(chip->irq);
1080 __end_hw:
1081 if (chip->irq >= 0)
Takashi Iwaie437e3d2005-11-17 15:06:15 +01001082 free_irq(chip->irq, chip);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001083 pci_release_regions(chip->pci);
1084 pci_disable_device(chip->pci);
1085 kfree(chip);
1086 return 0;
1087}
1088
Takashi Iwaie437e3d2005-11-17 15:06:15 +01001089static int snd_via82xx_dev_free(struct snd_device *device)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001090{
Takashi Iwaie437e3d2005-11-17 15:06:15 +01001091 struct via82xx_modem *chip = device->device_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001092 return snd_via82xx_free(chip);
1093}
1094
Takashi Iwaie437e3d2005-11-17 15:06:15 +01001095static int __devinit snd_via82xx_create(struct snd_card *card,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001096 struct pci_dev *pci,
1097 int chip_type,
1098 int revision,
1099 unsigned int ac97_clock,
Takashi Iwaie437e3d2005-11-17 15:06:15 +01001100 struct via82xx_modem ** r_via)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001101{
Takashi Iwaie437e3d2005-11-17 15:06:15 +01001102 struct via82xx_modem *chip;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001103 int err;
Takashi Iwaie437e3d2005-11-17 15:06:15 +01001104 static struct snd_device_ops ops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001105 .dev_free = snd_via82xx_dev_free,
1106 };
1107
1108 if ((err = pci_enable_device(pci)) < 0)
1109 return err;
1110
Takashi Iwaie560d8d2005-09-09 14:21:46 +02001111 if ((chip = kzalloc(sizeof(*chip), GFP_KERNEL)) == NULL) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001112 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);
Takashi Iwai437a5a42006-11-21 12:14:23 +01001127 if (request_irq(pci->irq, snd_via82xx_interrupt, IRQF_SHARED,
Takashi Iwaie437e3d2005-11-17 15:06:15 +01001128 card->driver, chip)) {
Takashi Iwai99b359b2005-10-20 18:26:44 +02001129 snd_printk(KERN_ERR "unable to grab IRQ %d\n", pci->irq);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001130 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{
Takashi Iwaie437e3d2005-11-17 15:06:15 +01001163 struct snd_card *card;
1164 struct via82xx_modem *chip;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001165 int chip_type = 0, card_type;
1166 unsigned int i;
1167 int err;
1168
Clemens Ladischb7fe4622005-10-04 08:46:51 +02001169 card = snd_card_new(index, id, THIS_MODULE, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001170 if (card == NULL)
1171 return -ENOMEM;
1172
1173 card_type = pci_id->driver_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001174 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
Auke Kok44c10132007-06-08 15:46:36 -07001185 if ((err = snd_via82xx_create(card, pci, chip_type, pci->revision,
Clemens Ladischb7fe4622005-10-04 08:46:51 +02001186 ac97_clock, &chip)) < 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001187 goto __error;
Takashi Iwai57feb832005-11-17 16:10:35 +01001188 card->private_data = chip;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001189 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
Linus Torvalds1da177e2005-04-16 15:20:36 -07001195 /* 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);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001209 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),
Takashi Iwai57feb832005-11-17 16:10:35 +01001227#ifdef CONFIG_PM
1228 .suspend = snd_via82xx_suspend,
1229 .resume = snd_via82xx_resume,
1230#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07001231};
1232
1233static int __init alsa_card_via82xx_init(void)
1234{
Takashi Iwai01d25d42005-04-11 16:58:24 +02001235 return pci_register_driver(&driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001236}
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)