[ALSA] via82xx - Add a quirk for Targa Traveller 811
[linux-2.6.git] / sound / pci / via82xx.c
1 /*
2  *   ALSA driver for VIA VT82xx (South Bridge)
3  *
4  *   VT82C686A/B/C, VT8233A/C, VT8235
5  *
6  *      Copyright (c) 2000 Jaroslav Kysela <perex@suse.cz>
7  *                         Tjeerd.Mulder <Tjeerd.Mulder@fujitsu-siemens.com>
8  *                    2002 Takashi Iwai <tiwai@suse.de>
9  *
10  *   This program is free software; you can redistribute it and/or modify
11  *   it under the terms of the GNU General Public License as published by
12  *   the Free Software Foundation; either version 2 of the License, or
13  *   (at your option) any later version.
14  *
15  *   This program is distributed in the hope that it will be useful,
16  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
17  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
18  *   GNU General Public License for more details.
19  *
20  *   You should have received a copy of the GNU General Public License
21  *   along with this program; if not, write to the Free Software
22  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
23  *
24  */
25
26 /*
27  * Changes:
28  *
29  * Dec. 19, 2002        Takashi Iwai <tiwai@suse.de>
30  *      - use the DSX channels for the first pcm playback.
31  *        (on VIA8233, 8233C and 8235 only)
32  *        this will allow you play simultaneously up to 4 streams.
33  *        multi-channel playback is assigned to the second device
34  *        on these chips.
35  *      - support the secondary capture (on VIA8233/C,8235)
36  *      - SPDIF support
37  *        the DSX3 channel can be used for SPDIF output.
38  *        on VIA8233A, this channel is assigned to the second pcm
39  *        playback.
40  *        the card config of alsa-lib will assign the correct
41  *        device for applications.
42  *      - clean up the code, separate low-level initialization
43  *        routines for each chipset.
44  *
45  * Sep. 26, 2005        Karsten Wiese <annabellesgarden@yahoo.de>
46  *      - Optimize position calculation for the 823x chips. 
47  */
48
49 #include <sound/driver.h>
50 #include <asm/io.h>
51 #include <linux/delay.h>
52 #include <linux/interrupt.h>
53 #include <linux/init.h>
54 #include <linux/pci.h>
55 #include <linux/slab.h>
56 #include <linux/gameport.h>
57 #include <linux/moduleparam.h>
58 #include <sound/core.h>
59 #include <sound/pcm.h>
60 #include <sound/pcm_params.h>
61 #include <sound/info.h>
62 #include <sound/ac97_codec.h>
63 #include <sound/mpu401.h>
64 #include <sound/initval.h>
65
66 #if 0
67 #define POINTER_DEBUG
68 #endif
69
70 MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>");
71 MODULE_DESCRIPTION("VIA VT82xx audio");
72 MODULE_LICENSE("GPL");
73 MODULE_SUPPORTED_DEVICE("{{VIA,VT82C686A/B/C,pci},{VIA,VT8233A/C,8235}}");
74
75 #if defined(CONFIG_GAMEPORT) || (defined(MODULE) && defined(CONFIG_GAMEPORT_MODULE))
76 #define SUPPORT_JOYSTICK 1
77 #endif
78
79 static int index = SNDRV_DEFAULT_IDX1;  /* Index 0-MAX */
80 static char *id = SNDRV_DEFAULT_STR1;   /* ID for this card */
81 static long mpu_port;
82 #ifdef SUPPORT_JOYSTICK
83 static int joystick;
84 #endif
85 static int ac97_clock = 48000;
86 static char *ac97_quirk;
87 static int dxs_support;
88
89 module_param(index, int, 0444);
90 MODULE_PARM_DESC(index, "Index value for VIA 82xx bridge.");
91 module_param(id, charp, 0444);
92 MODULE_PARM_DESC(id, "ID string for VIA 82xx bridge.");
93 module_param(mpu_port, long, 0444);
94 MODULE_PARM_DESC(mpu_port, "MPU-401 port. (VT82C686x only)");
95 #ifdef SUPPORT_JOYSTICK
96 module_param(joystick, bool, 0444);
97 MODULE_PARM_DESC(joystick, "Enable joystick. (VT82C686x only)");
98 #endif
99 module_param(ac97_clock, int, 0444);
100 MODULE_PARM_DESC(ac97_clock, "AC'97 codec clock (default 48000Hz).");
101 module_param(ac97_quirk, charp, 0444);
102 MODULE_PARM_DESC(ac97_quirk, "AC'97 workaround for strange hardware.");
103 module_param(dxs_support, int, 0444);
104 MODULE_PARM_DESC(dxs_support, "Support for DXS channels (0 = auto, 1 = enable, 2 = disable, 3 = 48k only, 4 = no VRA, 5 = enable any sample rate)");
105
106 /* just for backward compatibility */
107 static int enable;
108 module_param(enable, bool, 0444);
109
110
111 /* revision numbers for via686 */
112 #define VIA_REV_686_A           0x10
113 #define VIA_REV_686_B           0x11
114 #define VIA_REV_686_C           0x12
115 #define VIA_REV_686_D           0x13
116 #define VIA_REV_686_E           0x14
117 #define VIA_REV_686_H           0x20
118
119 /* revision numbers for via8233 */
120 #define VIA_REV_PRE_8233        0x10    /* not in market */
121 #define VIA_REV_8233C           0x20    /* 2 rec, 4 pb, 1 multi-pb */
122 #define VIA_REV_8233            0x30    /* 2 rec, 4 pb, 1 multi-pb, spdif */
123 #define VIA_REV_8233A           0x40    /* 1 rec, 1 multi-pb, spdf */
124 #define VIA_REV_8235            0x50    /* 2 rec, 4 pb, 1 multi-pb, spdif */
125 #define VIA_REV_8237            0x60
126
127 /*
128  *  Direct registers
129  */
130
131 #define VIAREG(via, x) ((via)->port + VIA_REG_##x)
132 #define VIADEV_REG(viadev, x) ((viadev)->port + VIA_REG_##x)
133
134 /* common offsets */
135 #define VIA_REG_OFFSET_STATUS           0x00    /* byte - channel status */
136 #define   VIA_REG_STAT_ACTIVE           0x80    /* RO */
137 #define   VIA8233_SHADOW_STAT_ACTIVE    0x08    /* RO */
138 #define   VIA_REG_STAT_PAUSED           0x40    /* RO */
139 #define   VIA_REG_STAT_TRIGGER_QUEUED   0x08    /* RO */
140 #define   VIA_REG_STAT_STOPPED          0x04    /* RWC */
141 #define   VIA_REG_STAT_EOL              0x02    /* RWC */
142 #define   VIA_REG_STAT_FLAG             0x01    /* RWC */
143 #define VIA_REG_OFFSET_CONTROL          0x01    /* byte - channel control */
144 #define   VIA_REG_CTRL_START            0x80    /* WO */
145 #define   VIA_REG_CTRL_TERMINATE        0x40    /* WO */
146 #define   VIA_REG_CTRL_AUTOSTART        0x20
147 #define   VIA_REG_CTRL_PAUSE            0x08    /* RW */
148 #define   VIA_REG_CTRL_INT_STOP         0x04            
149 #define   VIA_REG_CTRL_INT_EOL          0x02
150 #define   VIA_REG_CTRL_INT_FLAG         0x01
151 #define   VIA_REG_CTRL_RESET            0x01    /* RW - probably reset? undocumented */
152 #define   VIA_REG_CTRL_INT (VIA_REG_CTRL_INT_FLAG | VIA_REG_CTRL_INT_EOL | VIA_REG_CTRL_AUTOSTART)
153 #define VIA_REG_OFFSET_TYPE             0x02    /* byte - channel type (686 only) */
154 #define   VIA_REG_TYPE_AUTOSTART        0x80    /* RW - autostart at EOL */
155 #define   VIA_REG_TYPE_16BIT            0x20    /* RW */
156 #define   VIA_REG_TYPE_STEREO           0x10    /* RW */
157 #define   VIA_REG_TYPE_INT_LLINE        0x00
158 #define   VIA_REG_TYPE_INT_LSAMPLE      0x04
159 #define   VIA_REG_TYPE_INT_LESSONE      0x08
160 #define   VIA_REG_TYPE_INT_MASK         0x0c
161 #define   VIA_REG_TYPE_INT_EOL          0x02
162 #define   VIA_REG_TYPE_INT_FLAG         0x01
163 #define VIA_REG_OFFSET_TABLE_PTR        0x04    /* dword - channel table pointer */
164 #define VIA_REG_OFFSET_CURR_PTR         0x04    /* dword - channel current pointer */
165 #define VIA_REG_OFFSET_STOP_IDX         0x08    /* dword - stop index, channel type, sample rate */
166 #define   VIA8233_REG_TYPE_16BIT        0x00200000      /* RW */
167 #define   VIA8233_REG_TYPE_STEREO       0x00100000      /* RW */
168 #define VIA_REG_OFFSET_CURR_COUNT       0x0c    /* dword - channel current count (24 bit) */
169 #define VIA_REG_OFFSET_CURR_INDEX       0x0f    /* byte - channel current index (for via8233 only) */
170
171 #define DEFINE_VIA_REGSET(name,val) \
172 enum {\
173         VIA_REG_##name##_STATUS         = (val),\
174         VIA_REG_##name##_CONTROL        = (val) + 0x01,\
175         VIA_REG_##name##_TYPE           = (val) + 0x02,\
176         VIA_REG_##name##_TABLE_PTR      = (val) + 0x04,\
177         VIA_REG_##name##_CURR_PTR       = (val) + 0x04,\
178         VIA_REG_##name##_STOP_IDX       = (val) + 0x08,\
179         VIA_REG_##name##_CURR_COUNT     = (val) + 0x0c,\
180 }
181
182 /* playback block */
183 DEFINE_VIA_REGSET(PLAYBACK, 0x00);
184 DEFINE_VIA_REGSET(CAPTURE, 0x10);
185 DEFINE_VIA_REGSET(FM, 0x20);
186
187 /* AC'97 */
188 #define VIA_REG_AC97                    0x80    /* dword */
189 #define   VIA_REG_AC97_CODEC_ID_MASK    (3<<30)
190 #define   VIA_REG_AC97_CODEC_ID_SHIFT   30
191 #define   VIA_REG_AC97_CODEC_ID_PRIMARY 0x00
192 #define   VIA_REG_AC97_CODEC_ID_SECONDARY 0x01
193 #define   VIA_REG_AC97_SECONDARY_VALID  (1<<27)
194 #define   VIA_REG_AC97_PRIMARY_VALID    (1<<25)
195 #define   VIA_REG_AC97_BUSY             (1<<24)
196 #define   VIA_REG_AC97_READ             (1<<23)
197 #define   VIA_REG_AC97_CMD_SHIFT        16
198 #define   VIA_REG_AC97_CMD_MASK         0x7e
199 #define   VIA_REG_AC97_DATA_SHIFT       0
200 #define   VIA_REG_AC97_DATA_MASK        0xffff
201
202 #define VIA_REG_SGD_SHADOW              0x84    /* dword */
203 /* via686 */
204 #define   VIA_REG_SGD_STAT_PB_FLAG      (1<<0)
205 #define   VIA_REG_SGD_STAT_CP_FLAG      (1<<1)
206 #define   VIA_REG_SGD_STAT_FM_FLAG      (1<<2)
207 #define   VIA_REG_SGD_STAT_PB_EOL       (1<<4)
208 #define   VIA_REG_SGD_STAT_CP_EOL       (1<<5)
209 #define   VIA_REG_SGD_STAT_FM_EOL       (1<<6)
210 #define   VIA_REG_SGD_STAT_PB_STOP      (1<<8)
211 #define   VIA_REG_SGD_STAT_CP_STOP      (1<<9)
212 #define   VIA_REG_SGD_STAT_FM_STOP      (1<<10)
213 #define   VIA_REG_SGD_STAT_PB_ACTIVE    (1<<12)
214 #define   VIA_REG_SGD_STAT_CP_ACTIVE    (1<<13)
215 #define   VIA_REG_SGD_STAT_FM_ACTIVE    (1<<14)
216 /* via8233 */
217 #define   VIA8233_REG_SGD_STAT_FLAG     (1<<0)
218 #define   VIA8233_REG_SGD_STAT_EOL      (1<<1)
219 #define   VIA8233_REG_SGD_STAT_STOP     (1<<2)
220 #define   VIA8233_REG_SGD_STAT_ACTIVE   (1<<3)
221 #define VIA8233_INTR_MASK(chan) ((VIA8233_REG_SGD_STAT_FLAG|VIA8233_REG_SGD_STAT_EOL) << ((chan) * 4))
222 #define   VIA8233_REG_SGD_CHAN_SDX      0
223 #define   VIA8233_REG_SGD_CHAN_MULTI    4
224 #define   VIA8233_REG_SGD_CHAN_REC      6
225 #define   VIA8233_REG_SGD_CHAN_REC1     7
226
227 #define VIA_REG_GPI_STATUS              0x88
228 #define VIA_REG_GPI_INTR                0x8c
229
230 /* multi-channel and capture registers for via8233 */
231 DEFINE_VIA_REGSET(MULTPLAY, 0x40);
232 DEFINE_VIA_REGSET(CAPTURE_8233, 0x60);
233
234 /* via8233-specific registers */
235 #define VIA_REG_OFS_PLAYBACK_VOLUME_L   0x02    /* byte */
236 #define VIA_REG_OFS_PLAYBACK_VOLUME_R   0x03    /* byte */
237 #define VIA_REG_OFS_MULTPLAY_FORMAT     0x02    /* byte - format and channels */
238 #define   VIA_REG_MULTPLAY_FMT_8BIT     0x00
239 #define   VIA_REG_MULTPLAY_FMT_16BIT    0x80
240 #define   VIA_REG_MULTPLAY_FMT_CH_MASK  0x70    /* # channels << 4 (valid = 1,2,4,6) */
241 #define VIA_REG_OFS_CAPTURE_FIFO        0x02    /* byte - bit 6 = fifo  enable */
242 #define   VIA_REG_CAPTURE_FIFO_ENABLE   0x40
243
244 #define VIA_DXS_MAX_VOLUME              31      /* max. volume (attenuation) of reg 0x32/33 */
245
246 #define VIA_REG_CAPTURE_CHANNEL         0x63    /* byte - input select */
247 #define   VIA_REG_CAPTURE_CHANNEL_MIC   0x4
248 #define   VIA_REG_CAPTURE_CHANNEL_LINE  0
249 #define   VIA_REG_CAPTURE_SELECT_CODEC  0x03    /* recording source codec (0 = primary) */
250
251 #define VIA_TBL_BIT_FLAG        0x40000000
252 #define VIA_TBL_BIT_EOL         0x80000000
253
254 /* pci space */
255 #define VIA_ACLINK_STAT         0x40
256 #define  VIA_ACLINK_C11_READY   0x20
257 #define  VIA_ACLINK_C10_READY   0x10
258 #define  VIA_ACLINK_C01_READY   0x04 /* secondary codec ready */
259 #define  VIA_ACLINK_LOWPOWER    0x02 /* low-power state */
260 #define  VIA_ACLINK_C00_READY   0x01 /* primary codec ready */
261 #define VIA_ACLINK_CTRL         0x41
262 #define  VIA_ACLINK_CTRL_ENABLE 0x80 /* 0: disable, 1: enable */
263 #define  VIA_ACLINK_CTRL_RESET  0x40 /* 0: assert, 1: de-assert */
264 #define  VIA_ACLINK_CTRL_SYNC   0x20 /* 0: release SYNC, 1: force SYNC hi */
265 #define  VIA_ACLINK_CTRL_SDO    0x10 /* 0: release SDO, 1: force SDO hi */
266 #define  VIA_ACLINK_CTRL_VRA    0x08 /* 0: disable VRA, 1: enable VRA */
267 #define  VIA_ACLINK_CTRL_PCM    0x04 /* 0: disable PCM, 1: enable PCM */
268 #define  VIA_ACLINK_CTRL_FM     0x02 /* via686 only */
269 #define  VIA_ACLINK_CTRL_SB     0x01 /* via686 only */
270 #define  VIA_ACLINK_CTRL_INIT   (VIA_ACLINK_CTRL_ENABLE|\
271                                  VIA_ACLINK_CTRL_RESET|\
272                                  VIA_ACLINK_CTRL_PCM|\
273                                  VIA_ACLINK_CTRL_VRA)
274 #define VIA_FUNC_ENABLE         0x42
275 #define  VIA_FUNC_MIDI_PNP      0x80 /* FIXME: it's 0x40 in the datasheet! */
276 #define  VIA_FUNC_MIDI_IRQMASK  0x40 /* FIXME: not documented! */
277 #define  VIA_FUNC_RX2C_WRITE    0x20
278 #define  VIA_FUNC_SB_FIFO_EMPTY 0x10
279 #define  VIA_FUNC_ENABLE_GAME   0x08
280 #define  VIA_FUNC_ENABLE_FM     0x04
281 #define  VIA_FUNC_ENABLE_MIDI   0x02
282 #define  VIA_FUNC_ENABLE_SB     0x01
283 #define VIA_PNP_CONTROL         0x43
284 #define VIA_FM_NMI_CTRL         0x48
285 #define VIA8233_VOLCHG_CTRL     0x48
286 #define VIA8233_SPDIF_CTRL      0x49
287 #define  VIA8233_SPDIF_DX3      0x08
288 #define  VIA8233_SPDIF_SLOT_MASK        0x03
289 #define  VIA8233_SPDIF_SLOT_1011        0x00
290 #define  VIA8233_SPDIF_SLOT_34          0x01
291 #define  VIA8233_SPDIF_SLOT_78          0x02
292 #define  VIA8233_SPDIF_SLOT_69          0x03
293
294 /*
295  */
296
297 #define VIA_DXS_AUTO    0
298 #define VIA_DXS_ENABLE  1
299 #define VIA_DXS_DISABLE 2
300 #define VIA_DXS_48K     3
301 #define VIA_DXS_NO_VRA  4
302 #define VIA_DXS_SRC     5
303
304
305 /*
306  * pcm stream
307  */
308
309 struct snd_via_sg_table {
310         unsigned int offset;
311         unsigned int size;
312 } ;
313
314 #define VIA_TABLE_SIZE  255
315
316 struct viadev {
317         unsigned int reg_offset;
318         unsigned long port;
319         int direction;  /* playback = 0, capture = 1 */
320         struct snd_pcm_substream *substream;
321         int running;
322         unsigned int tbl_entries; /* # descriptors */
323         struct snd_dma_buffer table;
324         struct snd_via_sg_table *idx_table;
325         /* for recovery from the unexpected pointer */
326         unsigned int lastpos;
327         unsigned int fragsize;
328         unsigned int bufsize;
329         unsigned int bufsize2;
330         int hwptr_done;         /* processed frame position in the buffer */
331         int in_interrupt;
332         int shadow_shift;
333 };
334
335
336 enum { TYPE_CARD_VIA686 = 1, TYPE_CARD_VIA8233 };
337 enum { TYPE_VIA686, TYPE_VIA8233, TYPE_VIA8233A };
338
339 #define VIA_MAX_DEVS    7       /* 4 playback, 1 multi, 2 capture */
340
341 struct via_rate_lock {
342         spinlock_t lock;
343         int rate;
344         int used;
345 };
346
347 struct via82xx {
348         int irq;
349
350         unsigned long port;
351         struct resource *mpu_res;
352         int chip_type;
353         unsigned char revision;
354
355         unsigned char old_legacy;
356         unsigned char old_legacy_cfg;
357 #ifdef CONFIG_PM
358         unsigned char legacy_saved;
359         unsigned char legacy_cfg_saved;
360         unsigned char spdif_ctrl_saved;
361         unsigned char capture_src_saved[2];
362         unsigned int mpu_port_saved;
363 #endif
364
365         unsigned char playback_volume[4][2]; /* for VIA8233/C/8235; default = 0 */
366         unsigned char playback_volume_c[2]; /* for VIA8233/C/8235; default = 0 */
367
368         unsigned int intr_mask; /* SGD_SHADOW mask to check interrupts */
369
370         struct pci_dev *pci;
371         struct snd_card *card;
372
373         unsigned int num_devs;
374         unsigned int playback_devno, multi_devno, capture_devno;
375         struct viadev devs[VIA_MAX_DEVS];
376         struct via_rate_lock rates[2]; /* playback and capture */
377         unsigned int dxs_fixed: 1;      /* DXS channel accepts only 48kHz */
378         unsigned int no_vra: 1;         /* no need to set VRA on DXS channels */
379         unsigned int dxs_src: 1;        /* use full SRC capabilities of DXS */
380         unsigned int spdif_on: 1;       /* only spdif rates work to external DACs */
381
382         struct snd_pcm *pcms[2];
383         struct snd_rawmidi *rmidi;
384
385         struct snd_ac97_bus *ac97_bus;
386         struct snd_ac97 *ac97;
387         unsigned int ac97_clock;
388         unsigned int ac97_secondary;    /* secondary AC'97 codec is present */
389
390         spinlock_t reg_lock;
391         struct snd_info_entry *proc_entry;
392
393 #ifdef SUPPORT_JOYSTICK
394         struct gameport *gameport;
395 #endif
396 };
397
398 static struct pci_device_id snd_via82xx_ids[] = {
399         /* 0x1106, 0x3058 */
400         { PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686_5, PCI_ANY_ID, PCI_ANY_ID, 0, 0, TYPE_CARD_VIA686, },     /* 686A */
401         /* 0x1106, 0x3059 */
402         { PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8233_5, PCI_ANY_ID, PCI_ANY_ID, 0, 0, TYPE_CARD_VIA8233, },      /* VT8233 */
403         { 0, }
404 };
405
406 MODULE_DEVICE_TABLE(pci, snd_via82xx_ids);
407
408 /*
409  */
410
411 /*
412  * allocate and initialize the descriptor buffers
413  * periods = number of periods
414  * fragsize = period size in bytes
415  */
416 static int build_via_table(struct viadev *dev, struct snd_pcm_substream *substream,
417                            struct pci_dev *pci,
418                            unsigned int periods, unsigned int fragsize)
419 {
420         unsigned int i, idx, ofs, rest;
421         struct via82xx *chip = snd_pcm_substream_chip(substream);
422         struct snd_sg_buf *sgbuf = snd_pcm_substream_sgbuf(substream);
423
424         if (dev->table.area == NULL) {
425                 /* the start of each lists must be aligned to 8 bytes,
426                  * but the kernel pages are much bigger, so we don't care
427                  */
428                 if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(chip->pci),
429                                         PAGE_ALIGN(VIA_TABLE_SIZE * 2 * 8),
430                                         &dev->table) < 0)
431                         return -ENOMEM;
432         }
433         if (! dev->idx_table) {
434                 dev->idx_table = kmalloc(sizeof(*dev->idx_table) * VIA_TABLE_SIZE, GFP_KERNEL);
435                 if (! dev->idx_table)
436                         return -ENOMEM;
437         }
438
439         /* fill the entries */
440         idx = 0;
441         ofs = 0;
442         for (i = 0; i < periods; i++) {
443                 rest = fragsize;
444                 /* fill descriptors for a period.
445                  * a period can be split to several descriptors if it's
446                  * over page boundary.
447                  */
448                 do {
449                         unsigned int r;
450                         unsigned int flag;
451
452                         if (idx >= VIA_TABLE_SIZE) {
453                                 snd_printk(KERN_ERR "via82xx: too much table size!\n");
454                                 return -EINVAL;
455                         }
456                         ((u32 *)dev->table.area)[idx << 1] = cpu_to_le32((u32)snd_pcm_sgbuf_get_addr(sgbuf, ofs));
457                         r = PAGE_SIZE - (ofs % PAGE_SIZE);
458                         if (rest < r)
459                                 r = rest;
460                         rest -= r;
461                         if (! rest) {
462                                 if (i == periods - 1)
463                                         flag = VIA_TBL_BIT_EOL; /* buffer boundary */
464                                 else
465                                         flag = VIA_TBL_BIT_FLAG; /* period boundary */
466                         } else
467                                 flag = 0; /* period continues to the next */
468                         // printk("via: tbl %d: at %d  size %d (rest %d)\n", idx, ofs, r, rest);
469                         ((u32 *)dev->table.area)[(idx<<1) + 1] = cpu_to_le32(r | flag);
470                         dev->idx_table[idx].offset = ofs;
471                         dev->idx_table[idx].size = r;
472                         ofs += r;
473                         idx++;
474                 } while (rest > 0);
475         }
476         dev->tbl_entries = idx;
477         dev->bufsize = periods * fragsize;
478         dev->bufsize2 = dev->bufsize / 2;
479         dev->fragsize = fragsize;
480         return 0;
481 }
482
483
484 static int clean_via_table(struct viadev *dev, struct snd_pcm_substream *substream,
485                            struct pci_dev *pci)
486 {
487         if (dev->table.area) {
488                 snd_dma_free_pages(&dev->table);
489                 dev->table.area = NULL;
490         }
491         kfree(dev->idx_table);
492         dev->idx_table = NULL;
493         return 0;
494 }
495
496 /*
497  *  Basic I/O
498  */
499
500 static inline unsigned int snd_via82xx_codec_xread(struct via82xx *chip)
501 {
502         return inl(VIAREG(chip, AC97));
503 }
504  
505 static inline void snd_via82xx_codec_xwrite(struct via82xx *chip, unsigned int val)
506 {
507         outl(val, VIAREG(chip, AC97));
508 }
509  
510 static int snd_via82xx_codec_ready(struct via82xx *chip, int secondary)
511 {
512         unsigned int timeout = 1000;    /* 1ms */
513         unsigned int val;
514         
515         while (timeout-- > 0) {
516                 udelay(1);
517                 if (!((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY))
518                         return val & 0xffff;
519         }
520         snd_printk(KERN_ERR "codec_ready: codec %i is not ready [0x%x]\n",
521                    secondary, snd_via82xx_codec_xread(chip));
522         return -EIO;
523 }
524  
525 static int snd_via82xx_codec_valid(struct via82xx *chip, int secondary)
526 {
527         unsigned int timeout = 1000;    /* 1ms */
528         unsigned int val, val1;
529         unsigned int stat = !secondary ? VIA_REG_AC97_PRIMARY_VALID :
530                                          VIA_REG_AC97_SECONDARY_VALID;
531         
532         while (timeout-- > 0) {
533                 val = snd_via82xx_codec_xread(chip);
534                 val1 = val & (VIA_REG_AC97_BUSY | stat);
535                 if (val1 == stat)
536                         return val & 0xffff;
537                 udelay(1);
538         }
539         return -EIO;
540 }
541  
542 static void snd_via82xx_codec_wait(struct snd_ac97 *ac97)
543 {
544         struct via82xx *chip = ac97->private_data;
545         int err;
546         err = snd_via82xx_codec_ready(chip, ac97->num);
547         /* here we need to wait fairly for long time.. */
548         msleep(500);
549 }
550
551 static void snd_via82xx_codec_write(struct snd_ac97 *ac97,
552                                     unsigned short reg,
553                                     unsigned short val)
554 {
555         struct via82xx *chip = ac97->private_data;
556         unsigned int xval;
557
558         xval = !ac97->num ? VIA_REG_AC97_CODEC_ID_PRIMARY : VIA_REG_AC97_CODEC_ID_SECONDARY;
559         xval <<= VIA_REG_AC97_CODEC_ID_SHIFT;
560         xval |= reg << VIA_REG_AC97_CMD_SHIFT;
561         xval |= val << VIA_REG_AC97_DATA_SHIFT;
562         snd_via82xx_codec_xwrite(chip, xval);
563         snd_via82xx_codec_ready(chip, ac97->num);
564 }
565
566 static unsigned short snd_via82xx_codec_read(struct snd_ac97 *ac97, unsigned short reg)
567 {
568         struct via82xx *chip = ac97->private_data;
569         unsigned int xval, val = 0xffff;
570         int again = 0;
571
572         xval = ac97->num << VIA_REG_AC97_CODEC_ID_SHIFT;
573         xval |= ac97->num ? VIA_REG_AC97_SECONDARY_VALID : VIA_REG_AC97_PRIMARY_VALID;
574         xval |= VIA_REG_AC97_READ;
575         xval |= (reg & 0x7f) << VIA_REG_AC97_CMD_SHIFT;
576         while (1) {
577                 if (again++ > 3) {
578                         snd_printk(KERN_ERR "codec_read: codec %i is not valid [0x%x]\n",
579                                    ac97->num, snd_via82xx_codec_xread(chip));
580                         return 0xffff;
581                 }
582                 snd_via82xx_codec_xwrite(chip, xval);
583                 udelay (20);
584                 if (snd_via82xx_codec_valid(chip, ac97->num) >= 0) {
585                         udelay(25);
586                         val = snd_via82xx_codec_xread(chip);
587                         break;
588                 }
589         }
590         return val & 0xffff;
591 }
592
593 static void snd_via82xx_channel_reset(struct via82xx *chip, struct viadev *viadev)
594 {
595         outb(VIA_REG_CTRL_PAUSE | VIA_REG_CTRL_TERMINATE | VIA_REG_CTRL_RESET,
596              VIADEV_REG(viadev, OFFSET_CONTROL));
597         inb(VIADEV_REG(viadev, OFFSET_CONTROL));
598         udelay(50);
599         /* disable interrupts */
600         outb(0x00, VIADEV_REG(viadev, OFFSET_CONTROL));
601         /* clear interrupts */
602         outb(0x03, VIADEV_REG(viadev, OFFSET_STATUS));
603         outb(0x00, VIADEV_REG(viadev, OFFSET_TYPE)); /* for via686 */
604         // outl(0, VIADEV_REG(viadev, OFFSET_CURR_PTR));
605         viadev->lastpos = 0;
606         viadev->hwptr_done = 0;
607 }
608
609
610 /*
611  *  Interrupt handler
612  *  Used for 686 and 8233A
613  */
614 static irqreturn_t snd_via686_interrupt(int irq, void *dev_id, struct pt_regs *regs)
615 {
616         struct via82xx *chip = dev_id;
617         unsigned int status;
618         unsigned int i;
619
620         status = inl(VIAREG(chip, SGD_SHADOW));
621         if (! (status & chip->intr_mask)) {
622                 if (chip->rmidi)
623                         /* check mpu401 interrupt */
624                         return snd_mpu401_uart_interrupt(irq, chip->rmidi->private_data, regs);
625                 return IRQ_NONE;
626         }
627
628         /* check status for each stream */
629         spin_lock(&chip->reg_lock);
630         for (i = 0; i < chip->num_devs; i++) {
631                 struct viadev *viadev = &chip->devs[i];
632                 unsigned char c_status = inb(VIADEV_REG(viadev, OFFSET_STATUS));
633                 if (! (c_status & (VIA_REG_STAT_EOL|VIA_REG_STAT_FLAG|VIA_REG_STAT_STOPPED)))
634                         continue;
635                 if (viadev->substream && viadev->running) {
636                         /*
637                          * Update hwptr_done based on 'period elapsed'
638                          * interrupts. We'll use it, when the chip returns 0 
639                          * for OFFSET_CURR_COUNT.
640                          */
641                         if (c_status & VIA_REG_STAT_EOL)
642                                 viadev->hwptr_done = 0;
643                         else
644                                 viadev->hwptr_done += viadev->fragsize;
645                         viadev->in_interrupt = c_status;
646                         spin_unlock(&chip->reg_lock);
647                         snd_pcm_period_elapsed(viadev->substream);
648                         spin_lock(&chip->reg_lock);
649                         viadev->in_interrupt = 0;
650                 }
651                 outb(c_status, VIADEV_REG(viadev, OFFSET_STATUS)); /* ack */
652         }
653         spin_unlock(&chip->reg_lock);
654         return IRQ_HANDLED;
655 }
656
657 /*
658  *  Interrupt handler
659  */
660 static irqreturn_t snd_via8233_interrupt(int irq, void *dev_id, struct pt_regs *regs)
661 {
662         struct via82xx *chip = dev_id;
663         unsigned int status;
664         unsigned int i;
665         int irqreturn = 0;
666
667         /* check status for each stream */
668         spin_lock(&chip->reg_lock);
669         status = inl(VIAREG(chip, SGD_SHADOW));
670
671         for (i = 0; i < chip->num_devs; i++) {
672                 struct viadev *viadev = &chip->devs[i];
673                 struct snd_pcm_substream *substream;
674                 unsigned char c_status, shadow_status;
675
676                 shadow_status = (status >> viadev->shadow_shift) &
677                         (VIA8233_SHADOW_STAT_ACTIVE|VIA_REG_STAT_EOL|
678                          VIA_REG_STAT_FLAG);
679                 c_status = shadow_status & (VIA_REG_STAT_EOL|VIA_REG_STAT_FLAG);
680                 if (!c_status)
681                         continue;
682
683                 substream = viadev->substream;
684                 if (substream && viadev->running) {
685                         /*
686                          * Update hwptr_done based on 'period elapsed'
687                          * interrupts. We'll use it, when the chip returns 0 
688                          * for OFFSET_CURR_COUNT.
689                          */
690                         if (c_status & VIA_REG_STAT_EOL)
691                                 viadev->hwptr_done = 0;
692                         else
693                                 viadev->hwptr_done += viadev->fragsize;
694                         viadev->in_interrupt = c_status;
695                         if (shadow_status & VIA8233_SHADOW_STAT_ACTIVE)
696                                 viadev->in_interrupt |= VIA_REG_STAT_ACTIVE;
697                         spin_unlock(&chip->reg_lock);
698
699                         snd_pcm_period_elapsed(substream);
700
701                         spin_lock(&chip->reg_lock);
702                         viadev->in_interrupt = 0;
703                 }
704                 outb(c_status, VIADEV_REG(viadev, OFFSET_STATUS)); /* ack */
705                 irqreturn = 1;
706         }
707         spin_unlock(&chip->reg_lock);
708         return IRQ_RETVAL(irqreturn);
709 }
710
711 /*
712  *  PCM callbacks
713  */
714
715 /*
716  * trigger callback
717  */
718 static int snd_via82xx_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
719 {
720         struct via82xx *chip = snd_pcm_substream_chip(substream);
721         struct viadev *viadev = substream->runtime->private_data;
722         unsigned char val;
723
724         if (chip->chip_type != TYPE_VIA686)
725                 val = VIA_REG_CTRL_INT;
726         else
727                 val = 0;
728         switch (cmd) {
729         case SNDRV_PCM_TRIGGER_START:
730         case SNDRV_PCM_TRIGGER_RESUME:
731                 val |= VIA_REG_CTRL_START;
732                 viadev->running = 1;
733                 break;
734         case SNDRV_PCM_TRIGGER_STOP:
735         case SNDRV_PCM_TRIGGER_SUSPEND:
736                 val = VIA_REG_CTRL_TERMINATE;
737                 viadev->running = 0;
738                 break;
739         case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
740                 val |= VIA_REG_CTRL_PAUSE;
741                 viadev->running = 0;
742                 break;
743         case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
744                 viadev->running = 1;
745                 break;
746         default:
747                 return -EINVAL;
748         }
749         outb(val, VIADEV_REG(viadev, OFFSET_CONTROL));
750         if (cmd == SNDRV_PCM_TRIGGER_STOP)
751                 snd_via82xx_channel_reset(chip, viadev);
752         return 0;
753 }
754
755
756 /*
757  * pointer callbacks
758  */
759
760 /*
761  * calculate the linear position at the given sg-buffer index and the rest count
762  */
763
764 #define check_invalid_pos(viadev,pos) \
765         ((pos) < viadev->lastpos && ((pos) >= viadev->bufsize2 ||\
766                                      viadev->lastpos < viadev->bufsize2))
767
768 static inline unsigned int calc_linear_pos(struct viadev *viadev, unsigned int idx,
769                                            unsigned int count)
770 {
771         unsigned int size, base, res;
772
773         size = viadev->idx_table[idx].size;
774         base = viadev->idx_table[idx].offset;
775         res = base + size - count;
776         if (res >= viadev->bufsize)
777                 res -= viadev->bufsize;
778
779         /* check the validity of the calculated position */
780         if (size < count) {
781                 snd_printd(KERN_ERR "invalid via82xx_cur_ptr (size = %d, count = %d)\n",
782                            (int)size, (int)count);
783                 res = viadev->lastpos;
784         } else {
785                 if (! count) {
786                         /* Some mobos report count = 0 on the DMA boundary,
787                          * i.e. count = size indeed.
788                          * Let's check whether this step is above the expected size.
789                          */
790                         int delta = res - viadev->lastpos;
791                         if (delta < 0)
792                                 delta += viadev->bufsize;
793                         if ((unsigned int)delta > viadev->fragsize)
794                                 res = base;
795                 }
796                 if (check_invalid_pos(viadev, res)) {
797 #ifdef POINTER_DEBUG
798                         printk(KERN_DEBUG "fail: idx = %i/%i, lastpos = 0x%x, "
799                                "bufsize2 = 0x%x, offsize = 0x%x, size = 0x%x, "
800                                "count = 0x%x\n", idx, viadev->tbl_entries,
801                                viadev->lastpos, viadev->bufsize2,
802                                viadev->idx_table[idx].offset,
803                                viadev->idx_table[idx].size, count);
804 #endif
805                         /* count register returns full size when end of buffer is reached */
806                         res = base + size;
807                         if (check_invalid_pos(viadev, res)) {
808                                 snd_printd(KERN_ERR "invalid via82xx_cur_ptr (2), "
809                                            "using last valid pointer\n");
810                                 res = viadev->lastpos;
811                         }
812                 }
813         }
814         return res;
815 }
816
817 /*
818  * get the current pointer on via686
819  */
820 static snd_pcm_uframes_t snd_via686_pcm_pointer(struct snd_pcm_substream *substream)
821 {
822         struct via82xx *chip = snd_pcm_substream_chip(substream);
823         struct viadev *viadev = substream->runtime->private_data;
824         unsigned int idx, ptr, count, res;
825
826         snd_assert(viadev->tbl_entries, return 0);
827         if (!(inb(VIADEV_REG(viadev, OFFSET_STATUS)) & VIA_REG_STAT_ACTIVE))
828                 return 0;
829
830         spin_lock(&chip->reg_lock);
831         count = inl(VIADEV_REG(viadev, OFFSET_CURR_COUNT)) & 0xffffff;
832         /* The via686a does not have the current index register,
833          * so we need to calculate the index from CURR_PTR.
834          */
835         ptr = inl(VIADEV_REG(viadev, OFFSET_CURR_PTR));
836         if (ptr <= (unsigned int)viadev->table.addr)
837                 idx = 0;
838         else /* CURR_PTR holds the address + 8 */
839                 idx = ((ptr - (unsigned int)viadev->table.addr) / 8 - 1) % viadev->tbl_entries;
840         res = calc_linear_pos(viadev, idx, count);
841         viadev->lastpos = res; /* remember the last position */
842         spin_unlock(&chip->reg_lock);
843
844         return bytes_to_frames(substream->runtime, res);
845 }
846
847 /*
848  * get the current pointer on via823x
849  */
850 static snd_pcm_uframes_t snd_via8233_pcm_pointer(struct snd_pcm_substream *substream)
851 {
852         struct via82xx *chip = snd_pcm_substream_chip(substream);
853         struct viadev *viadev = substream->runtime->private_data;
854         unsigned int idx, count, res;
855         int status;
856         
857         snd_assert(viadev->tbl_entries, return 0);
858
859         spin_lock(&chip->reg_lock);
860         count = inl(VIADEV_REG(viadev, OFFSET_CURR_COUNT));
861         status = viadev->in_interrupt;
862         if (!status)
863                 status = inb(VIADEV_REG(viadev, OFFSET_STATUS));
864
865         if (!(status & VIA_REG_STAT_ACTIVE)) {
866                 res = 0;
867                 goto unlock;
868         }
869         if (count & 0xffffff) {
870                 idx = count >> 24;
871                 if (idx >= viadev->tbl_entries) {
872 #ifdef POINTER_DEBUG
873                         printk(KERN_DEBUG "fail: invalid idx = %i/%i\n", idx,
874                                viadev->tbl_entries);
875 #endif
876                         res = viadev->lastpos;
877                 } else {
878                         count &= 0xffffff;
879                         res = calc_linear_pos(viadev, idx, count);
880                 }
881         } else {
882                 res = viadev->hwptr_done;
883                 if (!viadev->in_interrupt) {
884                         if (status & VIA_REG_STAT_EOL) {
885                                 res = 0;
886                         } else
887                                 if (status & VIA_REG_STAT_FLAG) {
888                                         res += viadev->fragsize;
889                                 }
890                 }
891         }                           
892 unlock:
893         viadev->lastpos = res;
894         spin_unlock(&chip->reg_lock);
895
896         return bytes_to_frames(substream->runtime, res);
897 }
898
899
900 /*
901  * hw_params callback:
902  * allocate the buffer and build up the buffer description table
903  */
904 static int snd_via82xx_hw_params(struct snd_pcm_substream *substream,
905                                  struct snd_pcm_hw_params *hw_params)
906 {
907         struct via82xx *chip = snd_pcm_substream_chip(substream);
908         struct viadev *viadev = substream->runtime->private_data;
909         int err;
910
911         err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
912         if (err < 0)
913                 return err;
914         err = build_via_table(viadev, substream, chip->pci,
915                               params_periods(hw_params),
916                               params_period_bytes(hw_params));
917         if (err < 0)
918                 return err;
919
920         return 0;
921 }
922
923 /*
924  * hw_free callback:
925  * clean up the buffer description table and release the buffer
926  */
927 static int snd_via82xx_hw_free(struct snd_pcm_substream *substream)
928 {
929         struct via82xx *chip = snd_pcm_substream_chip(substream);
930         struct viadev *viadev = substream->runtime->private_data;
931
932         clean_via_table(viadev, substream, chip->pci);
933         snd_pcm_lib_free_pages(substream);
934         return 0;
935 }
936
937
938 /*
939  * set up the table pointer
940  */
941 static void snd_via82xx_set_table_ptr(struct via82xx *chip, struct viadev *viadev)
942 {
943         snd_via82xx_codec_ready(chip, 0);
944         outl((u32)viadev->table.addr, VIADEV_REG(viadev, OFFSET_TABLE_PTR));
945         udelay(20);
946         snd_via82xx_codec_ready(chip, 0);
947 }
948
949 /*
950  * prepare callback for playback and capture on via686
951  */
952 static void via686_setup_format(struct via82xx *chip, struct viadev *viadev,
953                                 struct snd_pcm_runtime *runtime)
954 {
955         snd_via82xx_channel_reset(chip, viadev);
956         /* this must be set after channel_reset */
957         snd_via82xx_set_table_ptr(chip, viadev);
958         outb(VIA_REG_TYPE_AUTOSTART |
959              (runtime->format == SNDRV_PCM_FORMAT_S16_LE ? VIA_REG_TYPE_16BIT : 0) |
960              (runtime->channels > 1 ? VIA_REG_TYPE_STEREO : 0) |
961              ((viadev->reg_offset & 0x10) == 0 ? VIA_REG_TYPE_INT_LSAMPLE : 0) |
962              VIA_REG_TYPE_INT_EOL |
963              VIA_REG_TYPE_INT_FLAG, VIADEV_REG(viadev, OFFSET_TYPE));
964 }
965
966 static int snd_via686_playback_prepare(struct snd_pcm_substream *substream)
967 {
968         struct via82xx *chip = snd_pcm_substream_chip(substream);
969         struct viadev *viadev = substream->runtime->private_data;
970         struct snd_pcm_runtime *runtime = substream->runtime;
971
972         snd_ac97_set_rate(chip->ac97, AC97_PCM_FRONT_DAC_RATE, runtime->rate);
973         snd_ac97_set_rate(chip->ac97, AC97_SPDIF, runtime->rate);
974         via686_setup_format(chip, viadev, runtime);
975         return 0;
976 }
977
978 static int snd_via686_capture_prepare(struct snd_pcm_substream *substream)
979 {
980         struct via82xx *chip = snd_pcm_substream_chip(substream);
981         struct viadev *viadev = substream->runtime->private_data;
982         struct snd_pcm_runtime *runtime = substream->runtime;
983
984         snd_ac97_set_rate(chip->ac97, AC97_PCM_LR_ADC_RATE, runtime->rate);
985         via686_setup_format(chip, viadev, runtime);
986         return 0;
987 }
988
989 /*
990  * lock the current rate
991  */
992 static int via_lock_rate(struct via_rate_lock *rec, int rate)
993 {
994         int changed = 0;
995
996         spin_lock_irq(&rec->lock);
997         if (rec->rate != rate) {
998                 if (rec->rate && rec->used > 1) /* already set */
999                         changed = -EINVAL;
1000                 else {
1001                         rec->rate = rate;
1002                         changed = 1;
1003                 }
1004         }
1005         spin_unlock_irq(&rec->lock);
1006         return changed;
1007 }
1008
1009 /*
1010  * prepare callback for DSX playback on via823x
1011  */
1012 static int snd_via8233_playback_prepare(struct snd_pcm_substream *substream)
1013 {
1014         struct via82xx *chip = snd_pcm_substream_chip(substream);
1015         struct viadev *viadev = substream->runtime->private_data;
1016         struct snd_pcm_runtime *runtime = substream->runtime;
1017         int ac97_rate = chip->dxs_src ? 48000 : runtime->rate;
1018         int rate_changed;
1019         u32 rbits;
1020
1021         if ((rate_changed = via_lock_rate(&chip->rates[0], ac97_rate)) < 0)
1022                 return rate_changed;
1023         if (rate_changed)
1024                 snd_ac97_set_rate(chip->ac97, AC97_PCM_FRONT_DAC_RATE,
1025                                   chip->no_vra ? 48000 : runtime->rate);
1026         if (chip->spdif_on && viadev->reg_offset == 0x30)
1027                 snd_ac97_set_rate(chip->ac97, AC97_SPDIF, runtime->rate);
1028
1029         if (runtime->rate == 48000)
1030                 rbits = 0xfffff;
1031         else
1032                 rbits = (0x100000 / 48000) * runtime->rate +
1033                         ((0x100000 % 48000) * runtime->rate) / 48000;
1034         snd_assert((rbits & ~0xfffff) == 0, return -EINVAL);
1035         snd_via82xx_channel_reset(chip, viadev);
1036         snd_via82xx_set_table_ptr(chip, viadev);
1037         outb(chip->playback_volume[viadev->reg_offset / 0x10][0],
1038              VIADEV_REG(viadev, OFS_PLAYBACK_VOLUME_L));
1039         outb(chip->playback_volume[viadev->reg_offset / 0x10][1],
1040              VIADEV_REG(viadev, OFS_PLAYBACK_VOLUME_R));
1041         outl((runtime->format == SNDRV_PCM_FORMAT_S16_LE ? VIA8233_REG_TYPE_16BIT : 0) | /* format */
1042              (runtime->channels > 1 ? VIA8233_REG_TYPE_STEREO : 0) | /* stereo */
1043              rbits | /* rate */
1044              0xff000000,    /* STOP index is never reached */
1045              VIADEV_REG(viadev, OFFSET_STOP_IDX));
1046         udelay(20);
1047         snd_via82xx_codec_ready(chip, 0);
1048         return 0;
1049 }
1050
1051 /*
1052  * prepare callback for multi-channel playback on via823x
1053  */
1054 static int snd_via8233_multi_prepare(struct snd_pcm_substream *substream)
1055 {
1056         struct via82xx *chip = snd_pcm_substream_chip(substream);
1057         struct viadev *viadev = substream->runtime->private_data;
1058         struct snd_pcm_runtime *runtime = substream->runtime;
1059         unsigned int slots;
1060         int fmt;
1061
1062         if (via_lock_rate(&chip->rates[0], runtime->rate) < 0)
1063                 return -EINVAL;
1064         snd_ac97_set_rate(chip->ac97, AC97_PCM_FRONT_DAC_RATE, runtime->rate);
1065         snd_ac97_set_rate(chip->ac97, AC97_PCM_SURR_DAC_RATE, runtime->rate);
1066         snd_ac97_set_rate(chip->ac97, AC97_PCM_LFE_DAC_RATE, runtime->rate);
1067         snd_ac97_set_rate(chip->ac97, AC97_SPDIF, runtime->rate);
1068         snd_via82xx_channel_reset(chip, viadev);
1069         snd_via82xx_set_table_ptr(chip, viadev);
1070
1071         fmt = (runtime->format == SNDRV_PCM_FORMAT_S16_LE) ?
1072                 VIA_REG_MULTPLAY_FMT_16BIT : VIA_REG_MULTPLAY_FMT_8BIT;
1073         fmt |= runtime->channels << 4;
1074         outb(fmt, VIADEV_REG(viadev, OFS_MULTPLAY_FORMAT));
1075 #if 0
1076         if (chip->revision == VIA_REV_8233A)
1077                 slots = 0;
1078         else
1079 #endif
1080         {
1081                 /* set sample number to slot 3, 4, 7, 8, 6, 9 (for VIA8233/C,8235) */
1082                 /* corresponding to FL, FR, RL, RR, C, LFE ?? */
1083                 switch (runtime->channels) {
1084                 case 1: slots = (1<<0) | (1<<4); break;
1085                 case 2: slots = (1<<0) | (2<<4); break;
1086                 case 3: slots = (1<<0) | (2<<4) | (5<<8); break;
1087                 case 4: slots = (1<<0) | (2<<4) | (3<<8) | (4<<12); break;
1088                 case 5: slots = (1<<0) | (2<<4) | (3<<8) | (4<<12) | (5<<16); break;
1089                 case 6: slots = (1<<0) | (2<<4) | (3<<8) | (4<<12) | (5<<16) | (6<<20); break;
1090                 default: slots = 0; break;
1091                 }
1092         }
1093         /* STOP index is never reached */
1094         outl(0xff000000 | slots, VIADEV_REG(viadev, OFFSET_STOP_IDX));
1095         udelay(20);
1096         snd_via82xx_codec_ready(chip, 0);
1097         return 0;
1098 }
1099
1100 /*
1101  * prepare callback for capture on via823x
1102  */
1103 static int snd_via8233_capture_prepare(struct snd_pcm_substream *substream)
1104 {
1105         struct via82xx *chip = snd_pcm_substream_chip(substream);
1106         struct viadev *viadev = substream->runtime->private_data;
1107         struct snd_pcm_runtime *runtime = substream->runtime;
1108
1109         if (via_lock_rate(&chip->rates[1], runtime->rate) < 0)
1110                 return -EINVAL;
1111         snd_ac97_set_rate(chip->ac97, AC97_PCM_LR_ADC_RATE, runtime->rate);
1112         snd_via82xx_channel_reset(chip, viadev);
1113         snd_via82xx_set_table_ptr(chip, viadev);
1114         outb(VIA_REG_CAPTURE_FIFO_ENABLE, VIADEV_REG(viadev, OFS_CAPTURE_FIFO));
1115         outl((runtime->format == SNDRV_PCM_FORMAT_S16_LE ? VIA8233_REG_TYPE_16BIT : 0) |
1116              (runtime->channels > 1 ? VIA8233_REG_TYPE_STEREO : 0) |
1117              0xff000000,    /* STOP index is never reached */
1118              VIADEV_REG(viadev, OFFSET_STOP_IDX));
1119         udelay(20);
1120         snd_via82xx_codec_ready(chip, 0);
1121         return 0;
1122 }
1123
1124
1125 /*
1126  * pcm hardware definition, identical for both playback and capture
1127  */
1128 static struct snd_pcm_hardware snd_via82xx_hw =
1129 {
1130         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1131                                  SNDRV_PCM_INFO_BLOCK_TRANSFER |
1132                                  SNDRV_PCM_INFO_MMAP_VALID |
1133                                  /* SNDRV_PCM_INFO_RESUME | */
1134                                  SNDRV_PCM_INFO_PAUSE),
1135         .formats =              SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE,
1136         .rates =                SNDRV_PCM_RATE_48000,
1137         .rate_min =             48000,
1138         .rate_max =             48000,
1139         .channels_min =         1,
1140         .channels_max =         2,
1141         .buffer_bytes_max =     128 * 1024,
1142         .period_bytes_min =     32,
1143         .period_bytes_max =     128 * 1024,
1144         .periods_min =          2,
1145         .periods_max =          VIA_TABLE_SIZE / 2,
1146         .fifo_size =            0,
1147 };
1148
1149
1150 /*
1151  * open callback skeleton
1152  */
1153 static int snd_via82xx_pcm_open(struct via82xx *chip, struct viadev *viadev,
1154                                 struct snd_pcm_substream *substream)
1155 {
1156         struct snd_pcm_runtime *runtime = substream->runtime;
1157         int err;
1158         struct via_rate_lock *ratep;
1159
1160         runtime->hw = snd_via82xx_hw;
1161         
1162         /* set the hw rate condition */
1163         ratep = &chip->rates[viadev->direction];
1164         spin_lock_irq(&ratep->lock);
1165         ratep->used++;
1166         if (chip->spdif_on && viadev->reg_offset == 0x30) {
1167                 /* DXS#3 and spdif is on */
1168                 runtime->hw.rates = chip->ac97->rates[AC97_RATES_SPDIF];
1169                 snd_pcm_limit_hw_rates(runtime);
1170         } else if (chip->dxs_fixed && viadev->reg_offset < 0x40) {
1171                 /* fixed DXS playback rate */
1172                 runtime->hw.rates = SNDRV_PCM_RATE_48000;
1173                 runtime->hw.rate_min = runtime->hw.rate_max = 48000;
1174         } else if (chip->dxs_src && viadev->reg_offset < 0x40) {
1175                 /* use full SRC capabilities of DXS */
1176                 runtime->hw.rates = (SNDRV_PCM_RATE_CONTINUOUS |
1177                                      SNDRV_PCM_RATE_8000_48000);
1178                 runtime->hw.rate_min = 8000;
1179                 runtime->hw.rate_max = 48000;
1180         } else if (! ratep->rate) {
1181                 int idx = viadev->direction ? AC97_RATES_ADC : AC97_RATES_FRONT_DAC;
1182                 runtime->hw.rates = chip->ac97->rates[idx];
1183                 snd_pcm_limit_hw_rates(runtime);
1184         } else {
1185                 /* a fixed rate */
1186                 runtime->hw.rates = SNDRV_PCM_RATE_KNOT;
1187                 runtime->hw.rate_max = runtime->hw.rate_min = ratep->rate;
1188         }
1189         spin_unlock_irq(&ratep->lock);
1190
1191         /* we may remove following constaint when we modify table entries
1192            in interrupt */
1193         if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
1194                 return err;
1195
1196         runtime->private_data = viadev;
1197         viadev->substream = substream;
1198
1199         return 0;
1200 }
1201
1202
1203 /*
1204  * open callback for playback on via686 and via823x DSX
1205  */
1206 static int snd_via82xx_playback_open(struct snd_pcm_substream *substream)
1207 {
1208         struct via82xx *chip = snd_pcm_substream_chip(substream);
1209         struct viadev *viadev = &chip->devs[chip->playback_devno + substream->number];
1210         int err;
1211
1212         if ((err = snd_via82xx_pcm_open(chip, viadev, substream)) < 0)
1213                 return err;
1214         return 0;
1215 }
1216
1217 /*
1218  * open callback for playback on via823x multi-channel
1219  */
1220 static int snd_via8233_multi_open(struct snd_pcm_substream *substream)
1221 {
1222         struct via82xx *chip = snd_pcm_substream_chip(substream);
1223         struct viadev *viadev = &chip->devs[chip->multi_devno];
1224         int err;
1225         /* channels constraint for VIA8233A
1226          * 3 and 5 channels are not supported
1227          */
1228         static unsigned int channels[] = {
1229                 1, 2, 4, 6
1230         };
1231         static struct snd_pcm_hw_constraint_list hw_constraints_channels = {
1232                 .count = ARRAY_SIZE(channels),
1233                 .list = channels,
1234                 .mask = 0,
1235         };
1236
1237         if ((err = snd_via82xx_pcm_open(chip, viadev, substream)) < 0)
1238                 return err;
1239         substream->runtime->hw.channels_max = 6;
1240         if (chip->revision == VIA_REV_8233A)
1241                 snd_pcm_hw_constraint_list(substream->runtime, 0,
1242                                            SNDRV_PCM_HW_PARAM_CHANNELS,
1243                                            &hw_constraints_channels);
1244         return 0;
1245 }
1246
1247 /*
1248  * open callback for capture on via686 and via823x
1249  */
1250 static int snd_via82xx_capture_open(struct snd_pcm_substream *substream)
1251 {
1252         struct via82xx *chip = snd_pcm_substream_chip(substream);
1253         struct viadev *viadev = &chip->devs[chip->capture_devno + substream->pcm->device];
1254
1255         return snd_via82xx_pcm_open(chip, viadev, substream);
1256 }
1257
1258 /*
1259  * close callback
1260  */
1261 static int snd_via82xx_pcm_close(struct snd_pcm_substream *substream)
1262 {
1263         struct via82xx *chip = snd_pcm_substream_chip(substream);
1264         struct viadev *viadev = substream->runtime->private_data;
1265         struct via_rate_lock *ratep;
1266
1267         /* release the rate lock */
1268         ratep = &chip->rates[viadev->direction];
1269         spin_lock_irq(&ratep->lock);
1270         ratep->used--;
1271         if (! ratep->used)
1272                 ratep->rate = 0;
1273         spin_unlock_irq(&ratep->lock);
1274
1275         viadev->substream = NULL;
1276         return 0;
1277 }
1278
1279
1280 /* via686 playback callbacks */
1281 static struct snd_pcm_ops snd_via686_playback_ops = {
1282         .open =         snd_via82xx_playback_open,
1283         .close =        snd_via82xx_pcm_close,
1284         .ioctl =        snd_pcm_lib_ioctl,
1285         .hw_params =    snd_via82xx_hw_params,
1286         .hw_free =      snd_via82xx_hw_free,
1287         .prepare =      snd_via686_playback_prepare,
1288         .trigger =      snd_via82xx_pcm_trigger,
1289         .pointer =      snd_via686_pcm_pointer,
1290         .page =         snd_pcm_sgbuf_ops_page,
1291 };
1292
1293 /* via686 capture callbacks */
1294 static struct snd_pcm_ops snd_via686_capture_ops = {
1295         .open =         snd_via82xx_capture_open,
1296         .close =        snd_via82xx_pcm_close,
1297         .ioctl =        snd_pcm_lib_ioctl,
1298         .hw_params =    snd_via82xx_hw_params,
1299         .hw_free =      snd_via82xx_hw_free,
1300         .prepare =      snd_via686_capture_prepare,
1301         .trigger =      snd_via82xx_pcm_trigger,
1302         .pointer =      snd_via686_pcm_pointer,
1303         .page =         snd_pcm_sgbuf_ops_page,
1304 };
1305
1306 /* via823x DSX playback callbacks */
1307 static struct snd_pcm_ops snd_via8233_playback_ops = {
1308         .open =         snd_via82xx_playback_open,
1309         .close =        snd_via82xx_pcm_close,
1310         .ioctl =        snd_pcm_lib_ioctl,
1311         .hw_params =    snd_via82xx_hw_params,
1312         .hw_free =      snd_via82xx_hw_free,
1313         .prepare =      snd_via8233_playback_prepare,
1314         .trigger =      snd_via82xx_pcm_trigger,
1315         .pointer =      snd_via8233_pcm_pointer,
1316         .page =         snd_pcm_sgbuf_ops_page,
1317 };
1318
1319 /* via823x multi-channel playback callbacks */
1320 static struct snd_pcm_ops snd_via8233_multi_ops = {
1321         .open =         snd_via8233_multi_open,
1322         .close =        snd_via82xx_pcm_close,
1323         .ioctl =        snd_pcm_lib_ioctl,
1324         .hw_params =    snd_via82xx_hw_params,
1325         .hw_free =      snd_via82xx_hw_free,
1326         .prepare =      snd_via8233_multi_prepare,
1327         .trigger =      snd_via82xx_pcm_trigger,
1328         .pointer =      snd_via8233_pcm_pointer,
1329         .page =         snd_pcm_sgbuf_ops_page,
1330 };
1331
1332 /* via823x capture callbacks */
1333 static struct snd_pcm_ops snd_via8233_capture_ops = {
1334         .open =         snd_via82xx_capture_open,
1335         .close =        snd_via82xx_pcm_close,
1336         .ioctl =        snd_pcm_lib_ioctl,
1337         .hw_params =    snd_via82xx_hw_params,
1338         .hw_free =      snd_via82xx_hw_free,
1339         .prepare =      snd_via8233_capture_prepare,
1340         .trigger =      snd_via82xx_pcm_trigger,
1341         .pointer =      snd_via8233_pcm_pointer,
1342         .page =         snd_pcm_sgbuf_ops_page,
1343 };
1344
1345
1346 static void init_viadev(struct via82xx *chip, int idx, unsigned int reg_offset,
1347                         int shadow_pos, int direction)
1348 {
1349         chip->devs[idx].reg_offset = reg_offset;
1350         chip->devs[idx].shadow_shift = shadow_pos * 4;
1351         chip->devs[idx].direction = direction;
1352         chip->devs[idx].port = chip->port + reg_offset;
1353 }
1354
1355 /*
1356  * create pcm instances for VIA8233, 8233C and 8235 (not 8233A)
1357  */
1358 static int __devinit snd_via8233_pcm_new(struct via82xx *chip)
1359 {
1360         struct snd_pcm *pcm;
1361         int i, err;
1362
1363         chip->playback_devno = 0;       /* x 4 */
1364         chip->multi_devno = 4;          /* x 1 */
1365         chip->capture_devno = 5;        /* x 2 */
1366         chip->num_devs = 7;
1367         chip->intr_mask = 0x33033333; /* FLAG|EOL for rec0-1, mc, sdx0-3 */
1368
1369         /* PCM #0:  4 DSX playbacks and 1 capture */
1370         err = snd_pcm_new(chip->card, chip->card->shortname, 0, 4, 1, &pcm);
1371         if (err < 0)
1372                 return err;
1373         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_playback_ops);
1374         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via8233_capture_ops);
1375         pcm->private_data = chip;
1376         strcpy(pcm->name, chip->card->shortname);
1377         chip->pcms[0] = pcm;
1378         /* set up playbacks */
1379         for (i = 0; i < 4; i++)
1380                 init_viadev(chip, i, 0x10 * i, i, 0);
1381         /* capture */
1382         init_viadev(chip, chip->capture_devno, VIA_REG_CAPTURE_8233_STATUS, 6, 1);
1383
1384         if ((err = snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1385                                                          snd_dma_pci_data(chip->pci),
1386                                                          64*1024, 128*1024)) < 0)
1387                 return err;
1388
1389         /* PCM #1:  multi-channel playback and 2nd capture */
1390         err = snd_pcm_new(chip->card, chip->card->shortname, 1, 1, 1, &pcm);
1391         if (err < 0)
1392                 return err;
1393         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_multi_ops);
1394         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via8233_capture_ops);
1395         pcm->private_data = chip;
1396         strcpy(pcm->name, chip->card->shortname);
1397         chip->pcms[1] = pcm;
1398         /* set up playback */
1399         init_viadev(chip, chip->multi_devno, VIA_REG_MULTPLAY_STATUS, 4, 0);
1400         /* set up capture */
1401         init_viadev(chip, chip->capture_devno + 1, VIA_REG_CAPTURE_8233_STATUS + 0x10, 7, 1);
1402
1403         if ((err = snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1404                                                          snd_dma_pci_data(chip->pci),
1405                                                          64*1024, 128*1024)) < 0)
1406                 return err;
1407
1408         return 0;
1409 }
1410
1411 /*
1412  * create pcm instances for VIA8233A
1413  */
1414 static int __devinit snd_via8233a_pcm_new(struct via82xx *chip)
1415 {
1416         struct snd_pcm *pcm;
1417         int err;
1418
1419         chip->multi_devno = 0;
1420         chip->playback_devno = 1;
1421         chip->capture_devno = 2;
1422         chip->num_devs = 3;
1423         chip->intr_mask = 0x03033000; /* FLAG|EOL for rec0, mc, sdx3 */
1424
1425         /* PCM #0:  multi-channel playback and capture */
1426         err = snd_pcm_new(chip->card, chip->card->shortname, 0, 1, 1, &pcm);
1427         if (err < 0)
1428                 return err;
1429         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_multi_ops);
1430         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via8233_capture_ops);
1431         pcm->private_data = chip;
1432         strcpy(pcm->name, chip->card->shortname);
1433         chip->pcms[0] = pcm;
1434         /* set up playback */
1435         init_viadev(chip, chip->multi_devno, VIA_REG_MULTPLAY_STATUS, 4, 0);
1436         /* capture */
1437         init_viadev(chip, chip->capture_devno, VIA_REG_CAPTURE_8233_STATUS, 6, 1);
1438
1439         if ((err = snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1440                                                          snd_dma_pci_data(chip->pci),
1441                                                          64*1024, 128*1024)) < 0)
1442                 return err;
1443
1444         /* SPDIF supported? */
1445         if (! ac97_can_spdif(chip->ac97))
1446                 return 0;
1447
1448         /* PCM #1:  DXS3 playback (for spdif) */
1449         err = snd_pcm_new(chip->card, chip->card->shortname, 1, 1, 0, &pcm);
1450         if (err < 0)
1451                 return err;
1452         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_playback_ops);
1453         pcm->private_data = chip;
1454         strcpy(pcm->name, chip->card->shortname);
1455         chip->pcms[1] = pcm;
1456         /* set up playback */
1457         init_viadev(chip, chip->playback_devno, 0x30, 3, 0);
1458
1459         if ((err = snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1460                                                          snd_dma_pci_data(chip->pci),
1461                                                          64*1024, 128*1024)) < 0)
1462                 return err;
1463
1464         return 0;
1465 }
1466
1467 /*
1468  * create a pcm instance for via686a/b
1469  */
1470 static int __devinit snd_via686_pcm_new(struct via82xx *chip)
1471 {
1472         struct snd_pcm *pcm;
1473         int err;
1474
1475         chip->playback_devno = 0;
1476         chip->capture_devno = 1;
1477         chip->num_devs = 2;
1478         chip->intr_mask = 0x77; /* FLAG | EOL for PB, CP, FM */
1479
1480         err = snd_pcm_new(chip->card, chip->card->shortname, 0, 1, 1, &pcm);
1481         if (err < 0)
1482                 return err;
1483         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via686_playback_ops);
1484         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via686_capture_ops);
1485         pcm->private_data = chip;
1486         strcpy(pcm->name, chip->card->shortname);
1487         chip->pcms[0] = pcm;
1488         init_viadev(chip, 0, VIA_REG_PLAYBACK_STATUS, 0, 0);
1489         init_viadev(chip, 1, VIA_REG_CAPTURE_STATUS, 0, 1);
1490
1491         if ((err = snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1492                                                          snd_dma_pci_data(chip->pci),
1493                                                          64*1024, 128*1024)) < 0)
1494                 return err;
1495
1496         return 0;
1497 }
1498
1499
1500 /*
1501  *  Mixer part
1502  */
1503
1504 static int snd_via8233_capture_source_info(struct snd_kcontrol *kcontrol,
1505                                            struct snd_ctl_elem_info *uinfo)
1506 {
1507         /* formerly they were "Line" and "Mic", but it looks like that they
1508          * have nothing to do with the actual physical connections...
1509          */
1510         static char *texts[2] = {
1511                 "Input1", "Input2"
1512         };
1513         uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
1514         uinfo->count = 1;
1515         uinfo->value.enumerated.items = 2;
1516         if (uinfo->value.enumerated.item >= 2)
1517                 uinfo->value.enumerated.item = 1;
1518         strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
1519         return 0;
1520 }
1521
1522 static int snd_via8233_capture_source_get(struct snd_kcontrol *kcontrol,
1523                                           struct snd_ctl_elem_value *ucontrol)
1524 {
1525         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1526         unsigned long port = chip->port + (kcontrol->id.index ? (VIA_REG_CAPTURE_CHANNEL + 0x10) : VIA_REG_CAPTURE_CHANNEL);
1527         ucontrol->value.enumerated.item[0] = inb(port) & VIA_REG_CAPTURE_CHANNEL_MIC ? 1 : 0;
1528         return 0;
1529 }
1530
1531 static int snd_via8233_capture_source_put(struct snd_kcontrol *kcontrol,
1532                                           struct snd_ctl_elem_value *ucontrol)
1533 {
1534         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1535         unsigned long port = chip->port + (kcontrol->id.index ? (VIA_REG_CAPTURE_CHANNEL + 0x10) : VIA_REG_CAPTURE_CHANNEL);
1536         u8 val, oval;
1537
1538         spin_lock_irq(&chip->reg_lock);
1539         oval = inb(port);
1540         val = oval & ~VIA_REG_CAPTURE_CHANNEL_MIC;
1541         if (ucontrol->value.enumerated.item[0])
1542                 val |= VIA_REG_CAPTURE_CHANNEL_MIC;
1543         if (val != oval)
1544                 outb(val, port);
1545         spin_unlock_irq(&chip->reg_lock);
1546         return val != oval;
1547 }
1548
1549 static struct snd_kcontrol_new snd_via8233_capture_source __devinitdata = {
1550         .name = "Input Source Select",
1551         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1552         .info = snd_via8233_capture_source_info,
1553         .get = snd_via8233_capture_source_get,
1554         .put = snd_via8233_capture_source_put,
1555 };
1556
1557 static int snd_via8233_dxs3_spdif_info(struct snd_kcontrol *kcontrol,
1558                                        struct snd_ctl_elem_info *uinfo)
1559 {
1560         uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
1561         uinfo->count = 1;
1562         uinfo->value.integer.min = 0;
1563         uinfo->value.integer.max = 1;
1564         return 0;
1565 }
1566
1567 static int snd_via8233_dxs3_spdif_get(struct snd_kcontrol *kcontrol,
1568                                       struct snd_ctl_elem_value *ucontrol)
1569 {
1570         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1571         u8 val;
1572
1573         pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &val);
1574         ucontrol->value.integer.value[0] = (val & VIA8233_SPDIF_DX3) ? 1 : 0;
1575         return 0;
1576 }
1577
1578 static int snd_via8233_dxs3_spdif_put(struct snd_kcontrol *kcontrol,
1579                                       struct snd_ctl_elem_value *ucontrol)
1580 {
1581         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1582         u8 val, oval;
1583
1584         pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &oval);
1585         val = oval & ~VIA8233_SPDIF_DX3;
1586         if (ucontrol->value.integer.value[0])
1587                 val |= VIA8233_SPDIF_DX3;
1588         /* save the spdif flag for rate filtering */
1589         chip->spdif_on = ucontrol->value.integer.value[0] ? 1 : 0;
1590         if (val != oval) {
1591                 pci_write_config_byte(chip->pci, VIA8233_SPDIF_CTRL, val);
1592                 return 1;
1593         }
1594         return 0;
1595 }
1596
1597 static struct snd_kcontrol_new snd_via8233_dxs3_spdif_control __devinitdata = {
1598         .name = SNDRV_CTL_NAME_IEC958("Output ",NONE,SWITCH),
1599         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1600         .info = snd_via8233_dxs3_spdif_info,
1601         .get = snd_via8233_dxs3_spdif_get,
1602         .put = snd_via8233_dxs3_spdif_put,
1603 };
1604
1605 static int snd_via8233_dxs_volume_info(struct snd_kcontrol *kcontrol,
1606                                        struct snd_ctl_elem_info *uinfo)
1607 {
1608         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
1609         uinfo->count = 2;
1610         uinfo->value.integer.min = 0;
1611         uinfo->value.integer.max = VIA_DXS_MAX_VOLUME;
1612         return 0;
1613 }
1614
1615 static int snd_via8233_dxs_volume_get(struct snd_kcontrol *kcontrol,
1616                                       struct snd_ctl_elem_value *ucontrol)
1617 {
1618         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1619         unsigned int idx = snd_ctl_get_ioff(kcontrol, &ucontrol->id);
1620
1621         ucontrol->value.integer.value[0] = VIA_DXS_MAX_VOLUME - chip->playback_volume[idx][0];
1622         ucontrol->value.integer.value[1] = VIA_DXS_MAX_VOLUME - chip->playback_volume[idx][1];
1623         return 0;
1624 }
1625
1626 static int snd_via8233_pcmdxs_volume_get(struct snd_kcontrol *kcontrol,
1627                                          struct snd_ctl_elem_value *ucontrol)
1628 {
1629         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1630         ucontrol->value.integer.value[0] = VIA_DXS_MAX_VOLUME - chip->playback_volume_c[0];
1631         ucontrol->value.integer.value[1] = VIA_DXS_MAX_VOLUME - chip->playback_volume_c[1];
1632         return 0;
1633 }
1634
1635 static int snd_via8233_dxs_volume_put(struct snd_kcontrol *kcontrol,
1636                                       struct snd_ctl_elem_value *ucontrol)
1637 {
1638         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1639         unsigned int idx = snd_ctl_get_ioff(kcontrol, &ucontrol->id);
1640         unsigned long port = chip->port + 0x10 * idx;
1641         unsigned char val;
1642         int i, change = 0;
1643
1644         for (i = 0; i < 2; i++) {
1645                 val = ucontrol->value.integer.value[i];
1646                 if (val > VIA_DXS_MAX_VOLUME)
1647                         val = VIA_DXS_MAX_VOLUME;
1648                 val = VIA_DXS_MAX_VOLUME - val;
1649                 change |= val != chip->playback_volume[idx][i];
1650                 if (change) {
1651                         chip->playback_volume[idx][i] = val;
1652                         outb(val, port + VIA_REG_OFS_PLAYBACK_VOLUME_L + i);
1653                 }
1654         }
1655         return change;
1656 }
1657
1658 static int snd_via8233_pcmdxs_volume_put(struct snd_kcontrol *kcontrol,
1659                                          struct snd_ctl_elem_value *ucontrol)
1660 {
1661         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1662         unsigned int idx;
1663         unsigned char val;
1664         int i, change = 0;
1665
1666         for (i = 0; i < 2; i++) {
1667                 val = ucontrol->value.integer.value[i];
1668                 if (val > VIA_DXS_MAX_VOLUME)
1669                         val = VIA_DXS_MAX_VOLUME;
1670                 val = VIA_DXS_MAX_VOLUME - val;
1671                 if (val != chip->playback_volume_c[i]) {
1672                         change = 1;
1673                         chip->playback_volume_c[i] = val;
1674                         for (idx = 0; idx < 4; idx++) {
1675                                 unsigned long port = chip->port + 0x10 * idx;
1676                                 chip->playback_volume[idx][i] = val;
1677                                 outb(val, port + VIA_REG_OFS_PLAYBACK_VOLUME_L + i);
1678                         }
1679                 }
1680         }
1681         return change;
1682 }
1683
1684 static struct snd_kcontrol_new snd_via8233_pcmdxs_volume_control __devinitdata = {
1685         .name = "PCM Playback Volume",
1686         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1687         .info = snd_via8233_dxs_volume_info,
1688         .get = snd_via8233_pcmdxs_volume_get,
1689         .put = snd_via8233_pcmdxs_volume_put,
1690 };
1691
1692 static struct snd_kcontrol_new snd_via8233_dxs_volume_control __devinitdata = {
1693         .name = "VIA DXS Playback Volume",
1694         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1695         .count = 4,
1696         .info = snd_via8233_dxs_volume_info,
1697         .get = snd_via8233_dxs_volume_get,
1698         .put = snd_via8233_dxs_volume_put,
1699 };
1700
1701 /*
1702  */
1703
1704 static void snd_via82xx_mixer_free_ac97_bus(struct snd_ac97_bus *bus)
1705 {
1706         struct via82xx *chip = bus->private_data;
1707         chip->ac97_bus = NULL;
1708 }
1709
1710 static void snd_via82xx_mixer_free_ac97(struct snd_ac97 *ac97)
1711 {
1712         struct via82xx *chip = ac97->private_data;
1713         chip->ac97 = NULL;
1714 }
1715
1716 static struct ac97_quirk ac97_quirks[] = {
1717         {
1718                 .subvendor = 0x1106,
1719                 .subdevice = 0x4161,
1720                 .codec_id = 0x56494161, /* VT1612A */
1721                 .name = "Soltek SL-75DRV5",
1722                 .type = AC97_TUNE_NONE
1723         },
1724         {       /* FIXME: which codec? */
1725                 .subvendor = 0x1106,
1726                 .subdevice = 0x4161,
1727                 .name = "ASRock K7VT2",
1728                 .type = AC97_TUNE_HP_ONLY
1729         },
1730         {
1731                 .subvendor = 0x1019,
1732                 .subdevice = 0x0a81,
1733                 .name = "ECS K7VTA3",
1734                 .type = AC97_TUNE_HP_ONLY
1735         },
1736         {
1737                 .subvendor = 0x1019,
1738                 .subdevice = 0x0a85,
1739                 .name = "ECS L7VMM2",
1740                 .type = AC97_TUNE_HP_ONLY
1741         },
1742         {
1743                 .subvendor = 0x1849,
1744                 .subdevice = 0x3059,
1745                 .name = "ASRock K7VM2",
1746                 .type = AC97_TUNE_HP_ONLY       /* VT1616 */
1747         },
1748         {
1749                 .subvendor = 0x14cd,
1750                 .subdevice = 0x7002,
1751                 .name = "Unknown",
1752                 .type = AC97_TUNE_ALC_JACK
1753         },
1754         {
1755                 .subvendor = 0x1071,
1756                 .subdevice = 0x8590,
1757                 .name = "Mitac Mobo",
1758                 .type = AC97_TUNE_ALC_JACK
1759         },
1760         {
1761                 .subvendor = 0x161f,
1762                 .subdevice = 0x202b,
1763                 .name = "Arima Notebook",
1764                 .type = AC97_TUNE_HP_ONLY,
1765         },
1766         {
1767                 .subvendor = 0x161f,
1768                 .subdevice = 0x2032,
1769                 .name = "Targa Traveller 811",
1770                 .type = AC97_TUNE_HP_ONLY,
1771         },
1772         { } /* terminator */
1773 };
1774
1775 static int __devinit snd_via82xx_mixer_new(struct via82xx *chip, const char *quirk_override)
1776 {
1777         struct snd_ac97_template ac97;
1778         int err;
1779         static struct snd_ac97_bus_ops ops = {
1780                 .write = snd_via82xx_codec_write,
1781                 .read = snd_via82xx_codec_read,
1782                 .wait = snd_via82xx_codec_wait,
1783         };
1784
1785         if ((err = snd_ac97_bus(chip->card, 0, &ops, chip, &chip->ac97_bus)) < 0)
1786                 return err;
1787         chip->ac97_bus->private_free = snd_via82xx_mixer_free_ac97_bus;
1788         chip->ac97_bus->clock = chip->ac97_clock;
1789
1790         memset(&ac97, 0, sizeof(ac97));
1791         ac97.private_data = chip;
1792         ac97.private_free = snd_via82xx_mixer_free_ac97;
1793         ac97.pci = chip->pci;
1794         ac97.scaps = AC97_SCAP_SKIP_MODEM;
1795         if ((err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97)) < 0)
1796                 return err;
1797
1798         snd_ac97_tune_hardware(chip->ac97, ac97_quirks, quirk_override);
1799
1800         if (chip->chip_type != TYPE_VIA686) {
1801                 /* use slot 10/11 */
1802                 snd_ac97_update_bits(chip->ac97, AC97_EXTENDED_STATUS, 0x03 << 4, 0x03 << 4);
1803         }
1804
1805         return 0;
1806 }
1807
1808 #ifdef SUPPORT_JOYSTICK
1809 #define JOYSTICK_ADDR   0x200
1810 static int __devinit snd_via686_create_gameport(struct via82xx *chip, unsigned char *legacy)
1811 {
1812         struct gameport *gp;
1813         struct resource *r;
1814
1815         if (!joystick)
1816                 return -ENODEV;
1817
1818         r = request_region(JOYSTICK_ADDR, 8, "VIA686 gameport");
1819         if (!r) {
1820                 printk(KERN_WARNING "via82xx: cannot reserve joystick port 0x%#x\n",
1821                        JOYSTICK_ADDR);
1822                 return -EBUSY;
1823         }
1824
1825         chip->gameport = gp = gameport_allocate_port();
1826         if (!gp) {
1827                 printk(KERN_ERR "via82xx: cannot allocate memory for gameport\n");
1828                 release_and_free_resource(r);
1829                 return -ENOMEM;
1830         }
1831
1832         gameport_set_name(gp, "VIA686 Gameport");
1833         gameport_set_phys(gp, "pci%s/gameport0", pci_name(chip->pci));
1834         gameport_set_dev_parent(gp, &chip->pci->dev);
1835         gp->io = JOYSTICK_ADDR;
1836         gameport_set_port_data(gp, r);
1837
1838         /* Enable legacy joystick port */
1839         *legacy |= VIA_FUNC_ENABLE_GAME;
1840         pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, *legacy);
1841
1842         gameport_register_port(chip->gameport);
1843
1844         return 0;
1845 }
1846
1847 static void snd_via686_free_gameport(struct via82xx *chip)
1848 {
1849         if (chip->gameport) {
1850                 struct resource *r = gameport_get_port_data(chip->gameport);
1851
1852                 gameport_unregister_port(chip->gameport);
1853                 chip->gameport = NULL;
1854                 release_and_free_resource(r);
1855         }
1856 }
1857 #else
1858 static inline int snd_via686_create_gameport(struct via82xx *chip, unsigned char *legacy)
1859 {
1860         return -ENOSYS;
1861 }
1862 static inline void snd_via686_free_gameport(struct via82xx *chip) { }
1863 #endif
1864
1865
1866 /*
1867  *
1868  */
1869
1870 static int __devinit snd_via8233_init_misc(struct via82xx *chip)
1871 {
1872         int i, err, caps;
1873         unsigned char val;
1874
1875         caps = chip->chip_type == TYPE_VIA8233A ? 1 : 2;
1876         for (i = 0; i < caps; i++) {
1877                 snd_via8233_capture_source.index = i;
1878                 err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_capture_source, chip));
1879                 if (err < 0)
1880                         return err;
1881         }
1882         if (ac97_can_spdif(chip->ac97)) {
1883                 err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_dxs3_spdif_control, chip));
1884                 if (err < 0)
1885                         return err;
1886         }
1887         if (chip->chip_type != TYPE_VIA8233A) {
1888                 /* when no h/w PCM volume control is found, use DXS volume control
1889                  * as the PCM vol control
1890                  */
1891                 struct snd_ctl_elem_id sid;
1892                 memset(&sid, 0, sizeof(sid));
1893                 strcpy(sid.name, "PCM Playback Volume");
1894                 sid.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
1895                 if (! snd_ctl_find_id(chip->card, &sid)) {
1896                         snd_printd(KERN_INFO "Using DXS as PCM Playback\n");
1897                         err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_pcmdxs_volume_control, chip));
1898                         if (err < 0)
1899                                 return err;
1900                 }
1901                 else /* Using DXS when PCM emulation is enabled is really weird */
1902                 {
1903                         /* Standalone DXS controls */
1904                         err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_dxs_volume_control, chip));
1905                         if (err < 0)
1906                                 return err;
1907                 }
1908         }
1909         /* select spdif data slot 10/11 */
1910         pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &val);
1911         val = (val & ~VIA8233_SPDIF_SLOT_MASK) | VIA8233_SPDIF_SLOT_1011;
1912         val &= ~VIA8233_SPDIF_DX3; /* SPDIF off as default */
1913         pci_write_config_byte(chip->pci, VIA8233_SPDIF_CTRL, val);
1914
1915         return 0;
1916 }
1917
1918 static int __devinit snd_via686_init_misc(struct via82xx *chip)
1919 {
1920         unsigned char legacy, legacy_cfg;
1921         int rev_h = 0;
1922
1923         legacy = chip->old_legacy;
1924         legacy_cfg = chip->old_legacy_cfg;
1925         legacy |= VIA_FUNC_MIDI_IRQMASK;        /* FIXME: correct? (disable MIDI) */
1926         legacy &= ~VIA_FUNC_ENABLE_GAME;        /* disable joystick */
1927         if (chip->revision >= VIA_REV_686_H) {
1928                 rev_h = 1;
1929                 if (mpu_port >= 0x200) {        /* force MIDI */
1930                         mpu_port &= 0xfffc;
1931                         pci_write_config_dword(chip->pci, 0x18, mpu_port | 0x01);
1932 #ifdef CONFIG_PM
1933                         chip->mpu_port_saved = mpu_port;
1934 #endif
1935                 } else {
1936                         mpu_port = pci_resource_start(chip->pci, 2);
1937                 }
1938         } else {
1939                 switch (mpu_port) {     /* force MIDI */
1940                 case 0x300:
1941                 case 0x310:
1942                 case 0x320:
1943                 case 0x330:
1944                         legacy_cfg &= ~(3 << 2);
1945                         legacy_cfg |= (mpu_port & 0x0030) >> 2;
1946                         break;
1947                 default:                        /* no, use BIOS settings */
1948                         if (legacy & VIA_FUNC_ENABLE_MIDI)
1949                                 mpu_port = 0x300 + ((legacy_cfg & 0x000c) << 2);
1950                         break;
1951                 }
1952         }
1953         if (mpu_port >= 0x200 &&
1954             (chip->mpu_res = request_region(mpu_port, 2, "VIA82xx MPU401"))
1955             != NULL) {
1956                 if (rev_h)
1957                         legacy |= VIA_FUNC_MIDI_PNP;    /* enable PCI I/O 2 */
1958                 legacy |= VIA_FUNC_ENABLE_MIDI;
1959         } else {
1960                 if (rev_h)
1961                         legacy &= ~VIA_FUNC_MIDI_PNP;   /* disable PCI I/O 2 */
1962                 legacy &= ~VIA_FUNC_ENABLE_MIDI;
1963                 mpu_port = 0;
1964         }
1965
1966         pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, legacy);
1967         pci_write_config_byte(chip->pci, VIA_PNP_CONTROL, legacy_cfg);
1968         if (chip->mpu_res) {
1969                 if (snd_mpu401_uart_new(chip->card, 0, MPU401_HW_VIA686A,
1970                                         mpu_port, 1,
1971                                         chip->irq, 0, &chip->rmidi) < 0) {
1972                         printk(KERN_WARNING "unable to initialize MPU-401"
1973                                " at 0x%lx, skipping\n", mpu_port);
1974                         legacy &= ~VIA_FUNC_ENABLE_MIDI;
1975                 } else {
1976                         legacy &= ~VIA_FUNC_MIDI_IRQMASK;       /* enable MIDI interrupt */
1977                 }
1978                 pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, legacy);
1979         }
1980
1981         snd_via686_create_gameport(chip, &legacy);
1982
1983 #ifdef CONFIG_PM
1984         chip->legacy_saved = legacy;
1985         chip->legacy_cfg_saved = legacy_cfg;
1986 #endif
1987
1988         return 0;
1989 }
1990
1991
1992 /*
1993  * proc interface
1994  */
1995 static void snd_via82xx_proc_read(struct snd_info_entry *entry,
1996                                   struct snd_info_buffer *buffer)
1997 {
1998         struct via82xx *chip = entry->private_data;
1999         int i;
2000         
2001         snd_iprintf(buffer, "%s\n\n", chip->card->longname);
2002         for (i = 0; i < 0xa0; i += 4) {
2003                 snd_iprintf(buffer, "%02x: %08x\n", i, inl(chip->port + i));
2004         }
2005 }
2006
2007 static void __devinit snd_via82xx_proc_init(struct via82xx *chip)
2008 {
2009         struct snd_info_entry *entry;
2010
2011         if (! snd_card_proc_new(chip->card, "via82xx", &entry))
2012                 snd_info_set_text_ops(entry, chip, 1024, snd_via82xx_proc_read);
2013 }
2014
2015 /*
2016  *
2017  */
2018
2019 static int snd_via82xx_chip_init(struct via82xx *chip)
2020 {
2021         unsigned int val;
2022         unsigned long end_time;
2023         unsigned char pval;
2024
2025 #if 0 /* broken on K7M? */
2026         if (chip->chip_type == TYPE_VIA686)
2027                 /* disable all legacy ports */
2028                 pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, 0);
2029 #endif
2030         pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval);
2031         if (! (pval & VIA_ACLINK_C00_READY)) { /* codec not ready? */
2032                 /* deassert ACLink reset, force SYNC */
2033                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL,
2034                                       VIA_ACLINK_CTRL_ENABLE |
2035                                       VIA_ACLINK_CTRL_RESET |
2036                                       VIA_ACLINK_CTRL_SYNC);
2037                 udelay(100);
2038 #if 1 /* FIXME: should we do full reset here for all chip models? */
2039                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, 0x00);
2040                 udelay(100);
2041 #else
2042                 /* deassert ACLink reset, force SYNC (warm AC'97 reset) */
2043                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL,
2044                                       VIA_ACLINK_CTRL_RESET|VIA_ACLINK_CTRL_SYNC);
2045                 udelay(2);
2046 #endif
2047                 /* ACLink on, deassert ACLink reset, VSR, SGD data out */
2048                 /* note - FM data out has trouble with non VRA codecs !! */
2049                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT);
2050                 udelay(100);
2051         }
2052         
2053         /* Make sure VRA is enabled, in case we didn't do a
2054          * complete codec reset, above */
2055         pci_read_config_byte(chip->pci, VIA_ACLINK_CTRL, &pval);
2056         if ((pval & VIA_ACLINK_CTRL_INIT) != VIA_ACLINK_CTRL_INIT) {
2057                 /* ACLink on, deassert ACLink reset, VSR, SGD data out */
2058                 /* note - FM data out has trouble with non VRA codecs !! */
2059                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT);
2060                 udelay(100);
2061         }
2062
2063         /* wait until codec ready */
2064         end_time = jiffies + msecs_to_jiffies(750);
2065         do {
2066                 pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval);
2067                 if (pval & VIA_ACLINK_C00_READY) /* primary codec ready */
2068                         break;
2069                 schedule_timeout_uninterruptible(1);
2070         } while (time_before(jiffies, end_time));
2071
2072         if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY)
2073                 snd_printk(KERN_ERR "AC'97 codec is not ready [0x%x]\n", val);
2074
2075 #if 0 /* FIXME: we don't support the second codec yet so skip the detection now.. */
2076         snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ |
2077                                  VIA_REG_AC97_SECONDARY_VALID |
2078                                  (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT));
2079         end_time = jiffies + msecs_to_jiffies(750);
2080         snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ |
2081                                  VIA_REG_AC97_SECONDARY_VALID |
2082                                  (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT));
2083         do {
2084                 if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_SECONDARY_VALID) {
2085                         chip->ac97_secondary = 1;
2086                         goto __ac97_ok2;
2087                 }
2088                 schedule_timeout_interruptible(1);
2089         } while (time_before(jiffies, end_time));
2090         /* This is ok, the most of motherboards have only one codec */
2091
2092       __ac97_ok2:
2093 #endif
2094
2095         if (chip->chip_type == TYPE_VIA686) {
2096                 /* route FM trap to IRQ, disable FM trap */
2097                 pci_write_config_byte(chip->pci, VIA_FM_NMI_CTRL, 0);
2098                 /* disable all GPI interrupts */
2099                 outl(0, VIAREG(chip, GPI_INTR));
2100         }
2101
2102         if (chip->chip_type != TYPE_VIA686) {
2103                 /* Workaround for Award BIOS bug:
2104                  * DXS channels don't work properly with VRA if MC97 is disabled.
2105                  */
2106                 struct pci_dev *pci;
2107                 pci = pci_get_device(0x1106, 0x3068, NULL); /* MC97 */
2108                 if (pci) {
2109                         unsigned char data;
2110                         pci_read_config_byte(pci, 0x44, &data);
2111                         pci_write_config_byte(pci, 0x44, data | 0x40);
2112                         pci_dev_put(pci);
2113                 }
2114         }
2115
2116         if (chip->chip_type != TYPE_VIA8233A) {
2117                 int i, idx;
2118                 for (idx = 0; idx < 4; idx++) {
2119                         unsigned long port = chip->port + 0x10 * idx;
2120                         for (i = 0; i < 2; i++) {
2121                                 chip->playback_volume[idx][i]=chip->playback_volume_c[i];
2122                                 outb(chip->playback_volume_c[i],
2123                                      port + VIA_REG_OFS_PLAYBACK_VOLUME_L + i);
2124                         }
2125                 }
2126         }
2127
2128         return 0;
2129 }
2130
2131 #ifdef CONFIG_PM
2132 /*
2133  * power management
2134  */
2135 static int snd_via82xx_suspend(struct pci_dev *pci, pm_message_t state)
2136 {
2137         struct snd_card *card = pci_get_drvdata(pci);
2138         struct via82xx *chip = card->private_data;
2139         int i;
2140
2141         snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
2142         for (i = 0; i < 2; i++)
2143                 snd_pcm_suspend_all(chip->pcms[i]);
2144         for (i = 0; i < chip->num_devs; i++)
2145                 snd_via82xx_channel_reset(chip, &chip->devs[i]);
2146         synchronize_irq(chip->irq);
2147         snd_ac97_suspend(chip->ac97);
2148
2149         /* save misc values */
2150         if (chip->chip_type != TYPE_VIA686) {
2151                 pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &chip->spdif_ctrl_saved);
2152                 chip->capture_src_saved[0] = inb(chip->port + VIA_REG_CAPTURE_CHANNEL);
2153                 chip->capture_src_saved[1] = inb(chip->port + VIA_REG_CAPTURE_CHANNEL + 0x10);
2154         }
2155
2156         pci_set_power_state(pci, PCI_D3hot);
2157         pci_disable_device(pci);
2158         pci_save_state(pci);
2159         return 0;
2160 }
2161
2162 static int snd_via82xx_resume(struct pci_dev *pci)
2163 {
2164         struct snd_card *card = pci_get_drvdata(pci);
2165         struct via82xx *chip = card->private_data;
2166         int i;
2167
2168         pci_restore_state(pci);
2169         pci_enable_device(pci);
2170         pci_set_power_state(pci, PCI_D0);
2171
2172         snd_via82xx_chip_init(chip);
2173
2174         if (chip->chip_type == TYPE_VIA686) {
2175                 if (chip->mpu_port_saved)
2176                         pci_write_config_dword(chip->pci, 0x18, chip->mpu_port_saved | 0x01);
2177                 pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, chip->legacy_saved);
2178                 pci_write_config_byte(chip->pci, VIA_PNP_CONTROL, chip->legacy_cfg_saved);
2179         } else {
2180                 pci_write_config_byte(chip->pci, VIA8233_SPDIF_CTRL, chip->spdif_ctrl_saved);
2181                 outb(chip->capture_src_saved[0], chip->port + VIA_REG_CAPTURE_CHANNEL);
2182                 outb(chip->capture_src_saved[1], chip->port + VIA_REG_CAPTURE_CHANNEL + 0x10);
2183         }
2184
2185         snd_ac97_resume(chip->ac97);
2186
2187         for (i = 0; i < chip->num_devs; i++)
2188                 snd_via82xx_channel_reset(chip, &chip->devs[i]);
2189
2190         snd_power_change_state(card, SNDRV_CTL_POWER_D0);
2191         return 0;
2192 }
2193 #endif /* CONFIG_PM */
2194
2195 static int snd_via82xx_free(struct via82xx *chip)
2196 {
2197         unsigned int i;
2198
2199         if (chip->irq < 0)
2200                 goto __end_hw;
2201         /* disable interrupts */
2202         for (i = 0; i < chip->num_devs; i++)
2203                 snd_via82xx_channel_reset(chip, &chip->devs[i]);
2204         synchronize_irq(chip->irq);
2205       __end_hw:
2206         if (chip->irq >= 0)
2207                 free_irq(chip->irq, chip);
2208         release_and_free_resource(chip->mpu_res);
2209         pci_release_regions(chip->pci);
2210
2211         if (chip->chip_type == TYPE_VIA686) {
2212                 snd_via686_free_gameport(chip);
2213                 pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, chip->old_legacy);
2214                 pci_write_config_byte(chip->pci, VIA_PNP_CONTROL, chip->old_legacy_cfg);
2215         }
2216         pci_disable_device(chip->pci);
2217         kfree(chip);
2218         return 0;
2219 }
2220
2221 static int snd_via82xx_dev_free(struct snd_device *device)
2222 {
2223         struct via82xx *chip = device->device_data;
2224         return snd_via82xx_free(chip);
2225 }
2226
2227 static int __devinit snd_via82xx_create(struct snd_card *card,
2228                                         struct pci_dev *pci,
2229                                         int chip_type,
2230                                         int revision,
2231                                         unsigned int ac97_clock,
2232                                         struct via82xx ** r_via)
2233 {
2234         struct via82xx *chip;
2235         int err;
2236         static struct snd_device_ops ops = {
2237                 .dev_free =     snd_via82xx_dev_free,
2238         };
2239
2240         if ((err = pci_enable_device(pci)) < 0)
2241                 return err;
2242
2243         if ((chip = kzalloc(sizeof(*chip), GFP_KERNEL)) == NULL) {
2244                 pci_disable_device(pci);
2245                 return -ENOMEM;
2246         }
2247
2248         chip->chip_type = chip_type;
2249         chip->revision = revision;
2250
2251         spin_lock_init(&chip->reg_lock);
2252         spin_lock_init(&chip->rates[0].lock);
2253         spin_lock_init(&chip->rates[1].lock);
2254         chip->card = card;
2255         chip->pci = pci;
2256         chip->irq = -1;
2257
2258         pci_read_config_byte(pci, VIA_FUNC_ENABLE, &chip->old_legacy);
2259         pci_read_config_byte(pci, VIA_PNP_CONTROL, &chip->old_legacy_cfg);
2260         pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE,
2261                               chip->old_legacy & ~(VIA_FUNC_ENABLE_SB|VIA_FUNC_ENABLE_FM));
2262
2263         if ((err = pci_request_regions(pci, card->driver)) < 0) {
2264                 kfree(chip);
2265                 pci_disable_device(pci);
2266                 return err;
2267         }
2268         chip->port = pci_resource_start(pci, 0);
2269         if (request_irq(pci->irq,
2270                         chip_type == TYPE_VIA8233 ?
2271                         snd_via8233_interrupt : snd_via686_interrupt,
2272                         SA_INTERRUPT|SA_SHIRQ,
2273                         card->driver, chip)) {
2274                 snd_printk(KERN_ERR "unable to grab IRQ %d\n", pci->irq);
2275                 snd_via82xx_free(chip);
2276                 return -EBUSY;
2277         }
2278         chip->irq = pci->irq;
2279         if (ac97_clock >= 8000 && ac97_clock <= 48000)
2280                 chip->ac97_clock = ac97_clock;
2281         synchronize_irq(chip->irq);
2282
2283         if ((err = snd_via82xx_chip_init(chip)) < 0) {
2284                 snd_via82xx_free(chip);
2285                 return err;
2286         }
2287
2288         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
2289                 snd_via82xx_free(chip);
2290                 return err;
2291         }
2292
2293         /* The 8233 ac97 controller does not implement the master bit
2294          * in the pci command register. IMHO this is a violation of the PCI spec.
2295          * We call pci_set_master here because it does not hurt. */
2296         pci_set_master(pci);
2297
2298         snd_card_set_dev(card, &pci->dev);
2299
2300         *r_via = chip;
2301         return 0;
2302 }
2303
2304 struct via823x_info {
2305         int revision;
2306         char *name;
2307         int type;
2308 };
2309 static struct via823x_info via823x_cards[] __devinitdata = {
2310         { VIA_REV_PRE_8233, "VIA 8233-Pre", TYPE_VIA8233 },
2311         { VIA_REV_8233C, "VIA 8233C", TYPE_VIA8233 },
2312         { VIA_REV_8233, "VIA 8233", TYPE_VIA8233 },
2313         { VIA_REV_8233A, "VIA 8233A", TYPE_VIA8233A },
2314         { VIA_REV_8235, "VIA 8235", TYPE_VIA8233 },
2315         { VIA_REV_8237, "VIA 8237", TYPE_VIA8233 },
2316 };
2317
2318 /*
2319  * auto detection of DXS channel supports.
2320  */
2321 struct dxs_whitelist {
2322         unsigned short subvendor;
2323         unsigned short subdevice; 
2324         unsigned short mask; 
2325         short action;   /* new dxs_support value */
2326 };
2327
2328 static int __devinit check_dxs_list(struct pci_dev *pci)
2329 {
2330         static struct dxs_whitelist whitelist[] = {
2331                 { .subvendor = 0x1005, .subdevice = 0x4710, .action = VIA_DXS_ENABLE }, /* Avance Logic Mobo */
2332                 { .subvendor = 0x1019, .subdevice = 0x0996, .action = VIA_DXS_48K },
2333                 { .subvendor = 0x1019, .subdevice = 0x0a81, .action = VIA_DXS_NO_VRA }, /* ECS K7VTA3 v8.0 */
2334                 { .subvendor = 0x1019, .subdevice = 0x0a85, .action = VIA_DXS_NO_VRA }, /* ECS L7VMM2 */
2335                 { .subvendor = 0x1019, .subdevice = 0xa101, .action = VIA_DXS_SRC },
2336                 { .subvendor = 0x1025, .subdevice = 0x0033, .action = VIA_DXS_NO_VRA }, /* Acer Inspire 1353LM */
2337                 { .subvendor = 0x1025, .subdevice = 0x0046, .action = VIA_DXS_SRC }, /* Acer Aspire 1524 WLMi */
2338                 { .subvendor = 0x1043, .subdevice = 0x8095, .action = VIA_DXS_NO_VRA }, /* ASUS A7V8X (FIXME: possibly VIA_DXS_ENABLE?)*/
2339                 { .subvendor = 0x1043, .subdevice = 0x80a1, .action = VIA_DXS_NO_VRA }, /* ASUS A7V8-X */
2340                 { .subvendor = 0x1043, .subdevice = 0x80b0, .action = VIA_DXS_NO_VRA }, /* ASUS A7V600 & K8V*/ 
2341                 { .subvendor = 0x1043, .subdevice = 0x810d, .action = VIA_DXS_SRC }, /* ASUS */
2342                 { .subvendor = 0x1043, .subdevice = 0x812a, .action = VIA_DXS_SRC    }, /* ASUS A8V Deluxe */ 
2343                 { .subvendor = 0x1071, .subdevice = 0x8375, .action = VIA_DXS_NO_VRA }, /* Vobis/Yakumo/Mitac notebook */
2344                 { .subvendor = 0x1071, .subdevice = 0x8399, .action = VIA_DXS_NO_VRA }, /* Umax AB 595T (VIA K8N800A - VT8237) */
2345                 { .subvendor = 0x10cf, .subdevice = 0x118e, .action = VIA_DXS_ENABLE }, /* FSC laptop */
2346                 { .subvendor = 0x1106, .subdevice = 0x4161, .action = VIA_DXS_NO_VRA }, /* ASRock K7VT2 */
2347                 { .subvendor = 0x1106, .subdevice = 0x4552, .action = VIA_DXS_NO_VRA }, /* QDI Kudoz 7X/600-6AL */
2348                 { .subvendor = 0x1106, .subdevice = 0xaa01, .action = VIA_DXS_NO_VRA }, /* EPIA MII */
2349                 { .subvendor = 0x1106, .subdevice = 0xc001, .action = VIA_DXS_SRC }, /* Insight P4-ITX */
2350                 { .subvendor = 0x1297, .subdevice = 0xa232, .action = VIA_DXS_ENABLE }, /* Shuttle ?? */
2351                 { .subvendor = 0x1297, .subdevice = 0xc160, .action = VIA_DXS_ENABLE }, /* Shuttle SK41G */
2352                 { .subvendor = 0x1458, .subdevice = 0xa002, .action = VIA_DXS_ENABLE }, /* Gigabyte GA-7VAXP */
2353                 { .subvendor = 0x1462, .subdevice = 0x0080, .action = VIA_DXS_SRC }, /* MSI K8T Neo-FIS2R */
2354                 { .subvendor = 0x1462, .subdevice = 0x0430, .action = VIA_DXS_SRC }, /* MSI 7142 (K8MM-V) */
2355                 { .subvendor = 0x1462, .subdevice = 0x0470, .action = VIA_DXS_SRC }, /* MSI KT880 Delta-FSR */
2356                 { .subvendor = 0x1462, .subdevice = 0x3800, .action = VIA_DXS_ENABLE }, /* MSI KT266 */
2357                 { .subvendor = 0x1462, .subdevice = 0x5901, .action = VIA_DXS_NO_VRA }, /* MSI KT6 Delta-SR */
2358                 { .subvendor = 0x1462, .subdevice = 0x7023, .action = VIA_DXS_NO_VRA }, /* MSI K8T Neo2-FI */
2359                 { .subvendor = 0x1462, .subdevice = 0x7120, .action = VIA_DXS_ENABLE }, /* MSI KT4V */
2360                 { .subvendor = 0x1462, .subdevice = 0x7142, .action = VIA_DXS_ENABLE }, /* MSI K8MM-V */
2361                 { .subvendor = 0x147b, .subdevice = 0x1401, .action = VIA_DXS_ENABLE }, /* ABIT KD7(-RAID) */
2362                 { .subvendor = 0x147b, .subdevice = 0x1411, .action = VIA_DXS_ENABLE }, /* ABIT VA-20 */
2363                 { .subvendor = 0x147b, .subdevice = 0x1413, .action = VIA_DXS_ENABLE }, /* ABIT KV8 Pro */
2364                 { .subvendor = 0x147b, .subdevice = 0x1415, .action = VIA_DXS_NO_VRA }, /* Abit AV8 */
2365                 { .subvendor = 0x14ff, .subdevice = 0x0403, .action = VIA_DXS_ENABLE }, /* Twinhead mobo */
2366                 { .subvendor = 0x14ff, .subdevice = 0x0408, .action = VIA_DXS_SRC }, /* Twinhead laptop */
2367                 { .subvendor = 0x1558, .subdevice = 0x4701, .action = VIA_DXS_SRC }, /* Clevo D470 */
2368                 { .subvendor = 0x1584, .subdevice = 0x8120, .action = VIA_DXS_ENABLE }, /* Gericom/Targa/Vobis/Uniwill laptop */
2369                 { .subvendor = 0x1584, .subdevice = 0x8123, .action = VIA_DXS_NO_VRA }, /* Uniwill (Targa Visionary XP-210) */
2370                 { .subvendor = 0x161f, .subdevice = 0x202b, .action = VIA_DXS_NO_VRA }, /* Amira Note book */
2371                 { .subvendor = 0x161f, .subdevice = 0x2032, .action = VIA_DXS_48K }, /* m680x machines */
2372                 { .subvendor = 0x1631, .subdevice = 0xe004, .action = VIA_DXS_ENABLE }, /* Easy Note 3174, Packard Bell */
2373                 { .subvendor = 0x1695, .subdevice = 0x3005, .action = VIA_DXS_ENABLE }, /* EPoX EP-8K9A */
2374                 { .subvendor = 0x1849, .subdevice = 0x3059, .action = VIA_DXS_NO_VRA }, /* ASRock K7VM2 */
2375                 { .subvendor = 0x1849, .subdevice = 0x9761, .action = VIA_DXS_SRC }, /* ASRock mobo(?) */
2376                 { .subvendor = 0x1919, .subdevice = 0x200a, .action = VIA_DXS_NO_VRA }, /* Soltek SL-K8Tpro-939 */
2377                 { .subvendor = 0x4005, .subdevice = 0x4710, .action = VIA_DXS_SRC },    /* MSI K7T266 Pro2 (MS-6380 V2.0) BIOS 3.7 */
2378                 { } /* terminator */
2379         };
2380         struct dxs_whitelist *w;
2381         unsigned short subsystem_vendor;
2382         unsigned short subsystem_device;
2383
2384         pci_read_config_word(pci, PCI_SUBSYSTEM_VENDOR_ID, &subsystem_vendor);
2385         pci_read_config_word(pci, PCI_SUBSYSTEM_ID, &subsystem_device);
2386
2387         for (w = whitelist; w->subvendor; w++) {
2388                 if (w->subvendor != subsystem_vendor)
2389                         continue;
2390                 if (w->mask) {
2391                         if ((w->mask & subsystem_device) == w->subdevice)
2392                                 return w->action;
2393                 } else {
2394                         if (subsystem_device == w->subdevice)
2395                                 return w->action;
2396                 }
2397         }
2398
2399         /*
2400          * not detected, try 48k rate only to be sure.
2401          */
2402         printk(KERN_INFO "via82xx: Assuming DXS channels with 48k fixed sample rate.\n");
2403         printk(KERN_INFO "         Please try dxs_support=5 option\n");
2404         printk(KERN_INFO "         and report if it works on your machine.\n");
2405         printk(KERN_INFO "         For more details, read ALSA-Configuration.txt.\n");
2406         return VIA_DXS_48K;
2407 };
2408
2409 static int __devinit snd_via82xx_probe(struct pci_dev *pci,
2410                                        const struct pci_device_id *pci_id)
2411 {
2412         struct snd_card *card;
2413         struct via82xx *chip;
2414         unsigned char revision;
2415         int chip_type = 0, card_type;
2416         unsigned int i;
2417         int err;
2418
2419         card = snd_card_new(index, id, THIS_MODULE, 0);
2420         if (card == NULL)
2421                 return -ENOMEM;
2422
2423         card_type = pci_id->driver_data;
2424         pci_read_config_byte(pci, PCI_REVISION_ID, &revision);
2425         switch (card_type) {
2426         case TYPE_CARD_VIA686:
2427                 strcpy(card->driver, "VIA686A");
2428                 sprintf(card->shortname, "VIA 82C686A/B rev%x", revision);
2429                 chip_type = TYPE_VIA686;
2430                 break;
2431         case TYPE_CARD_VIA8233:
2432                 chip_type = TYPE_VIA8233;
2433                 sprintf(card->shortname, "VIA 823x rev%x", revision);
2434                 for (i = 0; i < ARRAY_SIZE(via823x_cards); i++) {
2435                         if (revision == via823x_cards[i].revision) {
2436                                 chip_type = via823x_cards[i].type;
2437                                 strcpy(card->shortname, via823x_cards[i].name);
2438                                 break;
2439                         }
2440                 }
2441                 if (chip_type != TYPE_VIA8233A) {
2442                         if (dxs_support == VIA_DXS_AUTO)
2443                                 dxs_support = check_dxs_list(pci);
2444                         /* force to use VIA8233 or 8233A model according to
2445                          * dxs_support module option
2446                          */
2447                         if (dxs_support == VIA_DXS_DISABLE)
2448                                 chip_type = TYPE_VIA8233A;
2449                         else
2450                                 chip_type = TYPE_VIA8233;
2451                 }
2452                 if (chip_type == TYPE_VIA8233A)
2453                         strcpy(card->driver, "VIA8233A");
2454                 else if (revision >= VIA_REV_8237)
2455                         strcpy(card->driver, "VIA8237"); /* no slog assignment */
2456                 else
2457                         strcpy(card->driver, "VIA8233");
2458                 break;
2459         default:
2460                 snd_printk(KERN_ERR "invalid card type %d\n", card_type);
2461                 err = -EINVAL;
2462                 goto __error;
2463         }
2464                 
2465         if ((err = snd_via82xx_create(card, pci, chip_type, revision,
2466                                       ac97_clock, &chip)) < 0)
2467                 goto __error;
2468         card->private_data = chip;
2469         if ((err = snd_via82xx_mixer_new(chip, ac97_quirk)) < 0)
2470                 goto __error;
2471
2472         if (chip_type == TYPE_VIA686) {
2473                 if ((err = snd_via686_pcm_new(chip)) < 0 ||
2474                     (err = snd_via686_init_misc(chip)) < 0)
2475                         goto __error;
2476         } else {
2477                 if (chip_type == TYPE_VIA8233A) {
2478                         if ((err = snd_via8233a_pcm_new(chip)) < 0)
2479                                 goto __error;
2480                         // chip->dxs_fixed = 1; /* FIXME: use 48k for DXS #3? */
2481                 } else {
2482                         if ((err = snd_via8233_pcm_new(chip)) < 0)
2483                                 goto __error;
2484                         if (dxs_support == VIA_DXS_48K)
2485                                 chip->dxs_fixed = 1;
2486                         else if (dxs_support == VIA_DXS_NO_VRA)
2487                                 chip->no_vra = 1;
2488                         else if (dxs_support == VIA_DXS_SRC) {
2489                                 chip->no_vra = 1;
2490                                 chip->dxs_src = 1;
2491                         }
2492                 }
2493                 if ((err = snd_via8233_init_misc(chip)) < 0)
2494                         goto __error;
2495         }
2496
2497         /* disable interrupts */
2498         for (i = 0; i < chip->num_devs; i++)
2499                 snd_via82xx_channel_reset(chip, &chip->devs[i]);
2500
2501         snprintf(card->longname, sizeof(card->longname),
2502                  "%s with %s at %#lx, irq %d", card->shortname,
2503                  snd_ac97_get_short_name(chip->ac97), chip->port, chip->irq);
2504
2505         snd_via82xx_proc_init(chip);
2506
2507         if ((err = snd_card_register(card)) < 0) {
2508                 snd_card_free(card);
2509                 return err;
2510         }
2511         pci_set_drvdata(pci, card);
2512         return 0;
2513
2514  __error:
2515         snd_card_free(card);
2516         return err;
2517 }
2518
2519 static void __devexit snd_via82xx_remove(struct pci_dev *pci)
2520 {
2521         snd_card_free(pci_get_drvdata(pci));
2522         pci_set_drvdata(pci, NULL);
2523 }
2524
2525 static struct pci_driver driver = {
2526         .name = "VIA 82xx Audio",
2527         .id_table = snd_via82xx_ids,
2528         .probe = snd_via82xx_probe,
2529         .remove = __devexit_p(snd_via82xx_remove),
2530 #ifdef CONFIG_PM
2531         .suspend = snd_via82xx_suspend,
2532         .resume = snd_via82xx_resume,
2533 #endif
2534 };
2535
2536 static int __init alsa_card_via82xx_init(void)
2537 {
2538         return pci_register_driver(&driver);
2539 }
2540
2541 static void __exit alsa_card_via82xx_exit(void)
2542 {
2543         pci_unregister_driver(&driver);
2544 }
2545
2546 module_init(alsa_card_via82xx_init)
2547 module_exit(alsa_card_via82xx_exit)