Merge commit 'v3.4' into android-tegra-nv-3.4
[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@perex.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 <asm/io.h>
50 #include <linux/delay.h>
51 #include <linux/interrupt.h>
52 #include <linux/init.h>
53 #include <linux/pci.h>
54 #include <linux/slab.h>
55 #include <linux/gameport.h>
56 #include <linux/module.h>
57 #include <sound/core.h>
58 #include <sound/pcm.h>
59 #include <sound/pcm_params.h>
60 #include <sound/info.h>
61 #include <sound/tlv.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@perex.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 bool joystick;
84 #endif
85 static int ac97_clock = 48000;
86 static char *ac97_quirk;
87 static int dxs_support;
88 static int dxs_init_volume = 31;
89 static int nodelay;
90
91 module_param(index, int, 0444);
92 MODULE_PARM_DESC(index, "Index value for VIA 82xx bridge.");
93 module_param(id, charp, 0444);
94 MODULE_PARM_DESC(id, "ID string for VIA 82xx bridge.");
95 module_param(mpu_port, long, 0444);
96 MODULE_PARM_DESC(mpu_port, "MPU-401 port. (VT82C686x only)");
97 #ifdef SUPPORT_JOYSTICK
98 module_param(joystick, bool, 0444);
99 MODULE_PARM_DESC(joystick, "Enable joystick. (VT82C686x only)");
100 #endif
101 module_param(ac97_clock, int, 0444);
102 MODULE_PARM_DESC(ac97_clock, "AC'97 codec clock (default 48000Hz).");
103 module_param(ac97_quirk, charp, 0444);
104 MODULE_PARM_DESC(ac97_quirk, "AC'97 workaround for strange hardware.");
105 module_param(dxs_support, int, 0444);
106 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)");
107 module_param(dxs_init_volume, int, 0644);
108 MODULE_PARM_DESC(dxs_init_volume, "initial DXS volume (0-31)");
109 module_param(nodelay, int, 0444);
110 MODULE_PARM_DESC(nodelay, "Disable 500ms init delay");
111
112 /* just for backward compatibility */
113 static bool enable;
114 module_param(enable, bool, 0444);
115
116
117 /* revision numbers for via686 */
118 #define VIA_REV_686_A           0x10
119 #define VIA_REV_686_B           0x11
120 #define VIA_REV_686_C           0x12
121 #define VIA_REV_686_D           0x13
122 #define VIA_REV_686_E           0x14
123 #define VIA_REV_686_H           0x20
124
125 /* revision numbers for via8233 */
126 #define VIA_REV_PRE_8233        0x10    /* not in market */
127 #define VIA_REV_8233C           0x20    /* 2 rec, 4 pb, 1 multi-pb */
128 #define VIA_REV_8233            0x30    /* 2 rec, 4 pb, 1 multi-pb, spdif */
129 #define VIA_REV_8233A           0x40    /* 1 rec, 1 multi-pb, spdf */
130 #define VIA_REV_8235            0x50    /* 2 rec, 4 pb, 1 multi-pb, spdif */
131 #define VIA_REV_8237            0x60
132 #define VIA_REV_8251            0x70
133
134 /*
135  *  Direct registers
136  */
137
138 #define VIAREG(via, x) ((via)->port + VIA_REG_##x)
139 #define VIADEV_REG(viadev, x) ((viadev)->port + VIA_REG_##x)
140
141 /* common offsets */
142 #define VIA_REG_OFFSET_STATUS           0x00    /* byte - channel status */
143 #define   VIA_REG_STAT_ACTIVE           0x80    /* RO */
144 #define   VIA8233_SHADOW_STAT_ACTIVE    0x08    /* RO */
145 #define   VIA_REG_STAT_PAUSED           0x40    /* RO */
146 #define   VIA_REG_STAT_TRIGGER_QUEUED   0x08    /* RO */
147 #define   VIA_REG_STAT_STOPPED          0x04    /* RWC */
148 #define   VIA_REG_STAT_EOL              0x02    /* RWC */
149 #define   VIA_REG_STAT_FLAG             0x01    /* RWC */
150 #define VIA_REG_OFFSET_CONTROL          0x01    /* byte - channel control */
151 #define   VIA_REG_CTRL_START            0x80    /* WO */
152 #define   VIA_REG_CTRL_TERMINATE        0x40    /* WO */
153 #define   VIA_REG_CTRL_AUTOSTART        0x20
154 #define   VIA_REG_CTRL_PAUSE            0x08    /* RW */
155 #define   VIA_REG_CTRL_INT_STOP         0x04            
156 #define   VIA_REG_CTRL_INT_EOL          0x02
157 #define   VIA_REG_CTRL_INT_FLAG         0x01
158 #define   VIA_REG_CTRL_RESET            0x01    /* RW - probably reset? undocumented */
159 #define   VIA_REG_CTRL_INT (VIA_REG_CTRL_INT_FLAG | VIA_REG_CTRL_INT_EOL | VIA_REG_CTRL_AUTOSTART)
160 #define VIA_REG_OFFSET_TYPE             0x02    /* byte - channel type (686 only) */
161 #define   VIA_REG_TYPE_AUTOSTART        0x80    /* RW - autostart at EOL */
162 #define   VIA_REG_TYPE_16BIT            0x20    /* RW */
163 #define   VIA_REG_TYPE_STEREO           0x10    /* RW */
164 #define   VIA_REG_TYPE_INT_LLINE        0x00
165 #define   VIA_REG_TYPE_INT_LSAMPLE      0x04
166 #define   VIA_REG_TYPE_INT_LESSONE      0x08
167 #define   VIA_REG_TYPE_INT_MASK         0x0c
168 #define   VIA_REG_TYPE_INT_EOL          0x02
169 #define   VIA_REG_TYPE_INT_FLAG         0x01
170 #define VIA_REG_OFFSET_TABLE_PTR        0x04    /* dword - channel table pointer */
171 #define VIA_REG_OFFSET_CURR_PTR         0x04    /* dword - channel current pointer */
172 #define VIA_REG_OFFSET_STOP_IDX         0x08    /* dword - stop index, channel type, sample rate */
173 #define   VIA8233_REG_TYPE_16BIT        0x00200000      /* RW */
174 #define   VIA8233_REG_TYPE_STEREO       0x00100000      /* RW */
175 #define VIA_REG_OFFSET_CURR_COUNT       0x0c    /* dword - channel current count (24 bit) */
176 #define VIA_REG_OFFSET_CURR_INDEX       0x0f    /* byte - channel current index (for via8233 only) */
177
178 #define DEFINE_VIA_REGSET(name,val) \
179 enum {\
180         VIA_REG_##name##_STATUS         = (val),\
181         VIA_REG_##name##_CONTROL        = (val) + 0x01,\
182         VIA_REG_##name##_TYPE           = (val) + 0x02,\
183         VIA_REG_##name##_TABLE_PTR      = (val) + 0x04,\
184         VIA_REG_##name##_CURR_PTR       = (val) + 0x04,\
185         VIA_REG_##name##_STOP_IDX       = (val) + 0x08,\
186         VIA_REG_##name##_CURR_COUNT     = (val) + 0x0c,\
187 }
188
189 /* playback block */
190 DEFINE_VIA_REGSET(PLAYBACK, 0x00);
191 DEFINE_VIA_REGSET(CAPTURE, 0x10);
192 DEFINE_VIA_REGSET(FM, 0x20);
193
194 /* AC'97 */
195 #define VIA_REG_AC97                    0x80    /* dword */
196 #define   VIA_REG_AC97_CODEC_ID_MASK    (3<<30)
197 #define   VIA_REG_AC97_CODEC_ID_SHIFT   30
198 #define   VIA_REG_AC97_CODEC_ID_PRIMARY 0x00
199 #define   VIA_REG_AC97_CODEC_ID_SECONDARY 0x01
200 #define   VIA_REG_AC97_SECONDARY_VALID  (1<<27)
201 #define   VIA_REG_AC97_PRIMARY_VALID    (1<<25)
202 #define   VIA_REG_AC97_BUSY             (1<<24)
203 #define   VIA_REG_AC97_READ             (1<<23)
204 #define   VIA_REG_AC97_CMD_SHIFT        16
205 #define   VIA_REG_AC97_CMD_MASK         0x7e
206 #define   VIA_REG_AC97_DATA_SHIFT       0
207 #define   VIA_REG_AC97_DATA_MASK        0xffff
208
209 #define VIA_REG_SGD_SHADOW              0x84    /* dword */
210 /* via686 */
211 #define   VIA_REG_SGD_STAT_PB_FLAG      (1<<0)
212 #define   VIA_REG_SGD_STAT_CP_FLAG      (1<<1)
213 #define   VIA_REG_SGD_STAT_FM_FLAG      (1<<2)
214 #define   VIA_REG_SGD_STAT_PB_EOL       (1<<4)
215 #define   VIA_REG_SGD_STAT_CP_EOL       (1<<5)
216 #define   VIA_REG_SGD_STAT_FM_EOL       (1<<6)
217 #define   VIA_REG_SGD_STAT_PB_STOP      (1<<8)
218 #define   VIA_REG_SGD_STAT_CP_STOP      (1<<9)
219 #define   VIA_REG_SGD_STAT_FM_STOP      (1<<10)
220 #define   VIA_REG_SGD_STAT_PB_ACTIVE    (1<<12)
221 #define   VIA_REG_SGD_STAT_CP_ACTIVE    (1<<13)
222 #define   VIA_REG_SGD_STAT_FM_ACTIVE    (1<<14)
223 /* via8233 */
224 #define   VIA8233_REG_SGD_STAT_FLAG     (1<<0)
225 #define   VIA8233_REG_SGD_STAT_EOL      (1<<1)
226 #define   VIA8233_REG_SGD_STAT_STOP     (1<<2)
227 #define   VIA8233_REG_SGD_STAT_ACTIVE   (1<<3)
228 #define VIA8233_INTR_MASK(chan) ((VIA8233_REG_SGD_STAT_FLAG|VIA8233_REG_SGD_STAT_EOL) << ((chan) * 4))
229 #define   VIA8233_REG_SGD_CHAN_SDX      0
230 #define   VIA8233_REG_SGD_CHAN_MULTI    4
231 #define   VIA8233_REG_SGD_CHAN_REC      6
232 #define   VIA8233_REG_SGD_CHAN_REC1     7
233
234 #define VIA_REG_GPI_STATUS              0x88
235 #define VIA_REG_GPI_INTR                0x8c
236
237 /* multi-channel and capture registers for via8233 */
238 DEFINE_VIA_REGSET(MULTPLAY, 0x40);
239 DEFINE_VIA_REGSET(CAPTURE_8233, 0x60);
240
241 /* via8233-specific registers */
242 #define VIA_REG_OFS_PLAYBACK_VOLUME_L   0x02    /* byte */
243 #define VIA_REG_OFS_PLAYBACK_VOLUME_R   0x03    /* byte */
244 #define VIA_REG_OFS_MULTPLAY_FORMAT     0x02    /* byte - format and channels */
245 #define   VIA_REG_MULTPLAY_FMT_8BIT     0x00
246 #define   VIA_REG_MULTPLAY_FMT_16BIT    0x80
247 #define   VIA_REG_MULTPLAY_FMT_CH_MASK  0x70    /* # channels << 4 (valid = 1,2,4,6) */
248 #define VIA_REG_OFS_CAPTURE_FIFO        0x02    /* byte - bit 6 = fifo  enable */
249 #define   VIA_REG_CAPTURE_FIFO_ENABLE   0x40
250
251 #define VIA_DXS_MAX_VOLUME              31      /* max. volume (attenuation) of reg 0x32/33 */
252
253 #define VIA_REG_CAPTURE_CHANNEL         0x63    /* byte - input select */
254 #define   VIA_REG_CAPTURE_CHANNEL_MIC   0x4
255 #define   VIA_REG_CAPTURE_CHANNEL_LINE  0
256 #define   VIA_REG_CAPTURE_SELECT_CODEC  0x03    /* recording source codec (0 = primary) */
257
258 #define VIA_TBL_BIT_FLAG        0x40000000
259 #define VIA_TBL_BIT_EOL         0x80000000
260
261 /* pci space */
262 #define VIA_ACLINK_STAT         0x40
263 #define  VIA_ACLINK_C11_READY   0x20
264 #define  VIA_ACLINK_C10_READY   0x10
265 #define  VIA_ACLINK_C01_READY   0x04 /* secondary codec ready */
266 #define  VIA_ACLINK_LOWPOWER    0x02 /* low-power state */
267 #define  VIA_ACLINK_C00_READY   0x01 /* primary codec ready */
268 #define VIA_ACLINK_CTRL         0x41
269 #define  VIA_ACLINK_CTRL_ENABLE 0x80 /* 0: disable, 1: enable */
270 #define  VIA_ACLINK_CTRL_RESET  0x40 /* 0: assert, 1: de-assert */
271 #define  VIA_ACLINK_CTRL_SYNC   0x20 /* 0: release SYNC, 1: force SYNC hi */
272 #define  VIA_ACLINK_CTRL_SDO    0x10 /* 0: release SDO, 1: force SDO hi */
273 #define  VIA_ACLINK_CTRL_VRA    0x08 /* 0: disable VRA, 1: enable VRA */
274 #define  VIA_ACLINK_CTRL_PCM    0x04 /* 0: disable PCM, 1: enable PCM */
275 #define  VIA_ACLINK_CTRL_FM     0x02 /* via686 only */
276 #define  VIA_ACLINK_CTRL_SB     0x01 /* via686 only */
277 #define  VIA_ACLINK_CTRL_INIT   (VIA_ACLINK_CTRL_ENABLE|\
278                                  VIA_ACLINK_CTRL_RESET|\
279                                  VIA_ACLINK_CTRL_PCM|\
280                                  VIA_ACLINK_CTRL_VRA)
281 #define VIA_FUNC_ENABLE         0x42
282 #define  VIA_FUNC_MIDI_PNP      0x80 /* FIXME: it's 0x40 in the datasheet! */
283 #define  VIA_FUNC_MIDI_IRQMASK  0x40 /* FIXME: not documented! */
284 #define  VIA_FUNC_RX2C_WRITE    0x20
285 #define  VIA_FUNC_SB_FIFO_EMPTY 0x10
286 #define  VIA_FUNC_ENABLE_GAME   0x08
287 #define  VIA_FUNC_ENABLE_FM     0x04
288 #define  VIA_FUNC_ENABLE_MIDI   0x02
289 #define  VIA_FUNC_ENABLE_SB     0x01
290 #define VIA_PNP_CONTROL         0x43
291 #define VIA_FM_NMI_CTRL         0x48
292 #define VIA8233_VOLCHG_CTRL     0x48
293 #define VIA8233_SPDIF_CTRL      0x49
294 #define  VIA8233_SPDIF_DX3      0x08
295 #define  VIA8233_SPDIF_SLOT_MASK        0x03
296 #define  VIA8233_SPDIF_SLOT_1011        0x00
297 #define  VIA8233_SPDIF_SLOT_34          0x01
298 #define  VIA8233_SPDIF_SLOT_78          0x02
299 #define  VIA8233_SPDIF_SLOT_69          0x03
300
301 /*
302  */
303
304 #define VIA_DXS_AUTO    0
305 #define VIA_DXS_ENABLE  1
306 #define VIA_DXS_DISABLE 2
307 #define VIA_DXS_48K     3
308 #define VIA_DXS_NO_VRA  4
309 #define VIA_DXS_SRC     5
310
311
312 /*
313  * pcm stream
314  */
315
316 struct snd_via_sg_table {
317         unsigned int offset;
318         unsigned int size;
319 } ;
320
321 #define VIA_TABLE_SIZE  255
322 #define VIA_MAX_BUFSIZE (1<<24)
323
324 struct viadev {
325         unsigned int reg_offset;
326         unsigned long port;
327         int direction;  /* playback = 0, capture = 1 */
328         struct snd_pcm_substream *substream;
329         int running;
330         unsigned int tbl_entries; /* # descriptors */
331         struct snd_dma_buffer table;
332         struct snd_via_sg_table *idx_table;
333         /* for recovery from the unexpected pointer */
334         unsigned int lastpos;
335         unsigned int fragsize;
336         unsigned int bufsize;
337         unsigned int bufsize2;
338         int hwptr_done;         /* processed frame position in the buffer */
339         int in_interrupt;
340         int shadow_shift;
341 };
342
343
344 enum { TYPE_CARD_VIA686 = 1, TYPE_CARD_VIA8233 };
345 enum { TYPE_VIA686, TYPE_VIA8233, TYPE_VIA8233A };
346
347 #define VIA_MAX_DEVS    7       /* 4 playback, 1 multi, 2 capture */
348
349 struct via_rate_lock {
350         spinlock_t lock;
351         int rate;
352         int used;
353 };
354
355 struct via82xx {
356         int irq;
357
358         unsigned long port;
359         struct resource *mpu_res;
360         int chip_type;
361         unsigned char revision;
362
363         unsigned char old_legacy;
364         unsigned char old_legacy_cfg;
365 #ifdef CONFIG_PM
366         unsigned char legacy_saved;
367         unsigned char legacy_cfg_saved;
368         unsigned char spdif_ctrl_saved;
369         unsigned char capture_src_saved[2];
370         unsigned int mpu_port_saved;
371 #endif
372
373         unsigned char playback_volume[4][2]; /* for VIA8233/C/8235; default = 0 */
374         unsigned char playback_volume_c[2]; /* for VIA8233/C/8235; default = 0 */
375
376         unsigned int intr_mask; /* SGD_SHADOW mask to check interrupts */
377
378         struct pci_dev *pci;
379         struct snd_card *card;
380
381         unsigned int num_devs;
382         unsigned int playback_devno, multi_devno, capture_devno;
383         struct viadev devs[VIA_MAX_DEVS];
384         struct via_rate_lock rates[2]; /* playback and capture */
385         unsigned int dxs_fixed: 1;      /* DXS channel accepts only 48kHz */
386         unsigned int no_vra: 1;         /* no need to set VRA on DXS channels */
387         unsigned int dxs_src: 1;        /* use full SRC capabilities of DXS */
388         unsigned int spdif_on: 1;       /* only spdif rates work to external DACs */
389
390         struct snd_pcm *pcms[2];
391         struct snd_rawmidi *rmidi;
392         struct snd_kcontrol *dxs_controls[4];
393
394         struct snd_ac97_bus *ac97_bus;
395         struct snd_ac97 *ac97;
396         unsigned int ac97_clock;
397         unsigned int ac97_secondary;    /* secondary AC'97 codec is present */
398
399         spinlock_t reg_lock;
400         struct snd_info_entry *proc_entry;
401
402 #ifdef SUPPORT_JOYSTICK
403         struct gameport *gameport;
404 #endif
405 };
406
407 static DEFINE_PCI_DEVICE_TABLE(snd_via82xx_ids) = {
408         /* 0x1106, 0x3058 */
409         { PCI_VDEVICE(VIA, PCI_DEVICE_ID_VIA_82C686_5), TYPE_CARD_VIA686, },    /* 686A */
410         /* 0x1106, 0x3059 */
411         { PCI_VDEVICE(VIA, PCI_DEVICE_ID_VIA_8233_5), TYPE_CARD_VIA8233, },     /* VT8233 */
412         { 0, }
413 };
414
415 MODULE_DEVICE_TABLE(pci, snd_via82xx_ids);
416
417 /*
418  */
419
420 /*
421  * allocate and initialize the descriptor buffers
422  * periods = number of periods
423  * fragsize = period size in bytes
424  */
425 static int build_via_table(struct viadev *dev, struct snd_pcm_substream *substream,
426                            struct pci_dev *pci,
427                            unsigned int periods, unsigned int fragsize)
428 {
429         unsigned int i, idx, ofs, rest;
430         struct via82xx *chip = snd_pcm_substream_chip(substream);
431
432         if (dev->table.area == NULL) {
433                 /* the start of each lists must be aligned to 8 bytes,
434                  * but the kernel pages are much bigger, so we don't care
435                  */
436                 if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(chip->pci),
437                                         PAGE_ALIGN(VIA_TABLE_SIZE * 2 * 8),
438                                         &dev->table) < 0)
439                         return -ENOMEM;
440         }
441         if (! dev->idx_table) {
442                 dev->idx_table = kmalloc(sizeof(*dev->idx_table) * VIA_TABLE_SIZE, GFP_KERNEL);
443                 if (! dev->idx_table)
444                         return -ENOMEM;
445         }
446
447         /* fill the entries */
448         idx = 0;
449         ofs = 0;
450         for (i = 0; i < periods; i++) {
451                 rest = fragsize;
452                 /* fill descriptors for a period.
453                  * a period can be split to several descriptors if it's
454                  * over page boundary.
455                  */
456                 do {
457                         unsigned int r;
458                         unsigned int flag;
459                         unsigned int addr;
460
461                         if (idx >= VIA_TABLE_SIZE) {
462                                 snd_printk(KERN_ERR "via82xx: too much table size!\n");
463                                 return -EINVAL;
464                         }
465                         addr = snd_pcm_sgbuf_get_addr(substream, ofs);
466                         ((u32 *)dev->table.area)[idx << 1] = cpu_to_le32(addr);
467                         r = snd_pcm_sgbuf_get_chunk_size(substream, ofs, rest);
468                         rest -= r;
469                         if (! rest) {
470                                 if (i == periods - 1)
471                                         flag = VIA_TBL_BIT_EOL; /* buffer boundary */
472                                 else
473                                         flag = VIA_TBL_BIT_FLAG; /* period boundary */
474                         } else
475                                 flag = 0; /* period continues to the next */
476                         /*
477                         printk(KERN_DEBUG "via: tbl %d: at %d  size %d "
478                                "(rest %d)\n", idx, ofs, r, rest);
479                         */
480                         ((u32 *)dev->table.area)[(idx<<1) + 1] = cpu_to_le32(r | flag);
481                         dev->idx_table[idx].offset = ofs;
482                         dev->idx_table[idx].size = r;
483                         ofs += r;
484                         idx++;
485                 } while (rest > 0);
486         }
487         dev->tbl_entries = idx;
488         dev->bufsize = periods * fragsize;
489         dev->bufsize2 = dev->bufsize / 2;
490         dev->fragsize = fragsize;
491         return 0;
492 }
493
494
495 static int clean_via_table(struct viadev *dev, struct snd_pcm_substream *substream,
496                            struct pci_dev *pci)
497 {
498         if (dev->table.area) {
499                 snd_dma_free_pages(&dev->table);
500                 dev->table.area = NULL;
501         }
502         kfree(dev->idx_table);
503         dev->idx_table = NULL;
504         return 0;
505 }
506
507 /*
508  *  Basic I/O
509  */
510
511 static inline unsigned int snd_via82xx_codec_xread(struct via82xx *chip)
512 {
513         return inl(VIAREG(chip, AC97));
514 }
515  
516 static inline void snd_via82xx_codec_xwrite(struct via82xx *chip, unsigned int val)
517 {
518         outl(val, VIAREG(chip, AC97));
519 }
520  
521 static int snd_via82xx_codec_ready(struct via82xx *chip, int secondary)
522 {
523         unsigned int timeout = 1000;    /* 1ms */
524         unsigned int val;
525         
526         while (timeout-- > 0) {
527                 udelay(1);
528                 if (!((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY))
529                         return val & 0xffff;
530         }
531         snd_printk(KERN_ERR "codec_ready: codec %i is not ready [0x%x]\n",
532                    secondary, snd_via82xx_codec_xread(chip));
533         return -EIO;
534 }
535  
536 static int snd_via82xx_codec_valid(struct via82xx *chip, int secondary)
537 {
538         unsigned int timeout = 1000;    /* 1ms */
539         unsigned int val, val1;
540         unsigned int stat = !secondary ? VIA_REG_AC97_PRIMARY_VALID :
541                                          VIA_REG_AC97_SECONDARY_VALID;
542         
543         while (timeout-- > 0) {
544                 val = snd_via82xx_codec_xread(chip);
545                 val1 = val & (VIA_REG_AC97_BUSY | stat);
546                 if (val1 == stat)
547                         return val & 0xffff;
548                 udelay(1);
549         }
550         return -EIO;
551 }
552  
553 static void snd_via82xx_codec_wait(struct snd_ac97 *ac97)
554 {
555         struct via82xx *chip = ac97->private_data;
556         int err;
557         err = snd_via82xx_codec_ready(chip, ac97->num);
558         /* here we need to wait fairly for long time.. */
559         if (!nodelay)
560                 msleep(500);
561 }
562
563 static void snd_via82xx_codec_write(struct snd_ac97 *ac97,
564                                     unsigned short reg,
565                                     unsigned short val)
566 {
567         struct via82xx *chip = ac97->private_data;
568         unsigned int xval;
569
570         xval = !ac97->num ? VIA_REG_AC97_CODEC_ID_PRIMARY : VIA_REG_AC97_CODEC_ID_SECONDARY;
571         xval <<= VIA_REG_AC97_CODEC_ID_SHIFT;
572         xval |= reg << VIA_REG_AC97_CMD_SHIFT;
573         xval |= val << VIA_REG_AC97_DATA_SHIFT;
574         snd_via82xx_codec_xwrite(chip, xval);
575         snd_via82xx_codec_ready(chip, ac97->num);
576 }
577
578 static unsigned short snd_via82xx_codec_read(struct snd_ac97 *ac97, unsigned short reg)
579 {
580         struct via82xx *chip = ac97->private_data;
581         unsigned int xval, val = 0xffff;
582         int again = 0;
583
584         xval = ac97->num << VIA_REG_AC97_CODEC_ID_SHIFT;
585         xval |= ac97->num ? VIA_REG_AC97_SECONDARY_VALID : VIA_REG_AC97_PRIMARY_VALID;
586         xval |= VIA_REG_AC97_READ;
587         xval |= (reg & 0x7f) << VIA_REG_AC97_CMD_SHIFT;
588         while (1) {
589                 if (again++ > 3) {
590                         snd_printk(KERN_ERR "codec_read: codec %i is not valid [0x%x]\n",
591                                    ac97->num, snd_via82xx_codec_xread(chip));
592                         return 0xffff;
593                 }
594                 snd_via82xx_codec_xwrite(chip, xval);
595                 udelay (20);
596                 if (snd_via82xx_codec_valid(chip, ac97->num) >= 0) {
597                         udelay(25);
598                         val = snd_via82xx_codec_xread(chip);
599                         break;
600                 }
601         }
602         return val & 0xffff;
603 }
604
605 static void snd_via82xx_channel_reset(struct via82xx *chip, struct viadev *viadev)
606 {
607         outb(VIA_REG_CTRL_PAUSE | VIA_REG_CTRL_TERMINATE | VIA_REG_CTRL_RESET,
608              VIADEV_REG(viadev, OFFSET_CONTROL));
609         inb(VIADEV_REG(viadev, OFFSET_CONTROL));
610         udelay(50);
611         /* disable interrupts */
612         outb(0x00, VIADEV_REG(viadev, OFFSET_CONTROL));
613         /* clear interrupts */
614         outb(0x03, VIADEV_REG(viadev, OFFSET_STATUS));
615         outb(0x00, VIADEV_REG(viadev, OFFSET_TYPE)); /* for via686 */
616         // outl(0, VIADEV_REG(viadev, OFFSET_CURR_PTR));
617         viadev->lastpos = 0;
618         viadev->hwptr_done = 0;
619 }
620
621
622 /*
623  *  Interrupt handler
624  *  Used for 686 and 8233A
625  */
626 static irqreturn_t snd_via686_interrupt(int irq, void *dev_id)
627 {
628         struct via82xx *chip = dev_id;
629         unsigned int status;
630         unsigned int i;
631
632         status = inl(VIAREG(chip, SGD_SHADOW));
633         if (! (status & chip->intr_mask)) {
634                 if (chip->rmidi)
635                         /* check mpu401 interrupt */
636                         return snd_mpu401_uart_interrupt(irq, chip->rmidi->private_data);
637                 return IRQ_NONE;
638         }
639
640         /* check status for each stream */
641         spin_lock(&chip->reg_lock);
642         for (i = 0; i < chip->num_devs; i++) {
643                 struct viadev *viadev = &chip->devs[i];
644                 unsigned char c_status = inb(VIADEV_REG(viadev, OFFSET_STATUS));
645                 if (! (c_status & (VIA_REG_STAT_EOL|VIA_REG_STAT_FLAG|VIA_REG_STAT_STOPPED)))
646                         continue;
647                 if (viadev->substream && viadev->running) {
648                         /*
649                          * Update hwptr_done based on 'period elapsed'
650                          * interrupts. We'll use it, when the chip returns 0 
651                          * for OFFSET_CURR_COUNT.
652                          */
653                         if (c_status & VIA_REG_STAT_EOL)
654                                 viadev->hwptr_done = 0;
655                         else
656                                 viadev->hwptr_done += viadev->fragsize;
657                         viadev->in_interrupt = c_status;
658                         spin_unlock(&chip->reg_lock);
659                         snd_pcm_period_elapsed(viadev->substream);
660                         spin_lock(&chip->reg_lock);
661                         viadev->in_interrupt = 0;
662                 }
663                 outb(c_status, VIADEV_REG(viadev, OFFSET_STATUS)); /* ack */
664         }
665         spin_unlock(&chip->reg_lock);
666         return IRQ_HANDLED;
667 }
668
669 /*
670  *  Interrupt handler
671  */
672 static irqreturn_t snd_via8233_interrupt(int irq, void *dev_id)
673 {
674         struct via82xx *chip = dev_id;
675         unsigned int status;
676         unsigned int i;
677         int irqreturn = 0;
678
679         /* check status for each stream */
680         spin_lock(&chip->reg_lock);
681         status = inl(VIAREG(chip, SGD_SHADOW));
682
683         for (i = 0; i < chip->num_devs; i++) {
684                 struct viadev *viadev = &chip->devs[i];
685                 struct snd_pcm_substream *substream;
686                 unsigned char c_status, shadow_status;
687
688                 shadow_status = (status >> viadev->shadow_shift) &
689                         (VIA8233_SHADOW_STAT_ACTIVE|VIA_REG_STAT_EOL|
690                          VIA_REG_STAT_FLAG);
691                 c_status = shadow_status & (VIA_REG_STAT_EOL|VIA_REG_STAT_FLAG);
692                 if (!c_status)
693                         continue;
694
695                 substream = viadev->substream;
696                 if (substream && viadev->running) {
697                         /*
698                          * Update hwptr_done based on 'period elapsed'
699                          * interrupts. We'll use it, when the chip returns 0 
700                          * for OFFSET_CURR_COUNT.
701                          */
702                         if (c_status & VIA_REG_STAT_EOL)
703                                 viadev->hwptr_done = 0;
704                         else
705                                 viadev->hwptr_done += viadev->fragsize;
706                         viadev->in_interrupt = c_status;
707                         if (shadow_status & VIA8233_SHADOW_STAT_ACTIVE)
708                                 viadev->in_interrupt |= VIA_REG_STAT_ACTIVE;
709                         spin_unlock(&chip->reg_lock);
710
711                         snd_pcm_period_elapsed(substream);
712
713                         spin_lock(&chip->reg_lock);
714                         viadev->in_interrupt = 0;
715                 }
716                 outb(c_status, VIADEV_REG(viadev, OFFSET_STATUS)); /* ack */
717                 irqreturn = 1;
718         }
719         spin_unlock(&chip->reg_lock);
720         return IRQ_RETVAL(irqreturn);
721 }
722
723 /*
724  *  PCM callbacks
725  */
726
727 /*
728  * trigger callback
729  */
730 static int snd_via82xx_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
731 {
732         struct via82xx *chip = snd_pcm_substream_chip(substream);
733         struct viadev *viadev = substream->runtime->private_data;
734         unsigned char val;
735
736         if (chip->chip_type != TYPE_VIA686)
737                 val = VIA_REG_CTRL_INT;
738         else
739                 val = 0;
740         switch (cmd) {
741         case SNDRV_PCM_TRIGGER_START:
742         case SNDRV_PCM_TRIGGER_RESUME:
743                 val |= VIA_REG_CTRL_START;
744                 viadev->running = 1;
745                 break;
746         case SNDRV_PCM_TRIGGER_STOP:
747         case SNDRV_PCM_TRIGGER_SUSPEND:
748                 val = VIA_REG_CTRL_TERMINATE;
749                 viadev->running = 0;
750                 break;
751         case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
752                 val |= VIA_REG_CTRL_PAUSE;
753                 viadev->running = 0;
754                 break;
755         case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
756                 viadev->running = 1;
757                 break;
758         default:
759                 return -EINVAL;
760         }
761         outb(val, VIADEV_REG(viadev, OFFSET_CONTROL));
762         if (cmd == SNDRV_PCM_TRIGGER_STOP)
763                 snd_via82xx_channel_reset(chip, viadev);
764         return 0;
765 }
766
767
768 /*
769  * pointer callbacks
770  */
771
772 /*
773  * calculate the linear position at the given sg-buffer index and the rest count
774  */
775
776 #define check_invalid_pos(viadev,pos) \
777         ((pos) < viadev->lastpos && ((pos) >= viadev->bufsize2 ||\
778                                      viadev->lastpos < viadev->bufsize2))
779
780 static inline unsigned int calc_linear_pos(struct viadev *viadev, unsigned int idx,
781                                            unsigned int count)
782 {
783         unsigned int size, base, res;
784
785         size = viadev->idx_table[idx].size;
786         base = viadev->idx_table[idx].offset;
787         res = base + size - count;
788         if (res >= viadev->bufsize)
789                 res -= viadev->bufsize;
790
791         /* check the validity of the calculated position */
792         if (size < count) {
793                 snd_printd(KERN_ERR "invalid via82xx_cur_ptr (size = %d, count = %d)\n",
794                            (int)size, (int)count);
795                 res = viadev->lastpos;
796         } else {
797                 if (! count) {
798                         /* Some mobos report count = 0 on the DMA boundary,
799                          * i.e. count = size indeed.
800                          * Let's check whether this step is above the expected size.
801                          */
802                         int delta = res - viadev->lastpos;
803                         if (delta < 0)
804                                 delta += viadev->bufsize;
805                         if ((unsigned int)delta > viadev->fragsize)
806                                 res = base;
807                 }
808                 if (check_invalid_pos(viadev, res)) {
809 #ifdef POINTER_DEBUG
810                         printk(KERN_DEBUG "fail: idx = %i/%i, lastpos = 0x%x, "
811                                "bufsize2 = 0x%x, offsize = 0x%x, size = 0x%x, "
812                                "count = 0x%x\n", idx, viadev->tbl_entries,
813                                viadev->lastpos, viadev->bufsize2,
814                                viadev->idx_table[idx].offset,
815                                viadev->idx_table[idx].size, count);
816 #endif
817                         /* count register returns full size when end of buffer is reached */
818                         res = base + size;
819                         if (check_invalid_pos(viadev, res)) {
820                                 snd_printd(KERN_ERR "invalid via82xx_cur_ptr (2), "
821                                            "using last valid pointer\n");
822                                 res = viadev->lastpos;
823                         }
824                 }
825         }
826         return res;
827 }
828
829 /*
830  * get the current pointer on via686
831  */
832 static snd_pcm_uframes_t snd_via686_pcm_pointer(struct snd_pcm_substream *substream)
833 {
834         struct via82xx *chip = snd_pcm_substream_chip(substream);
835         struct viadev *viadev = substream->runtime->private_data;
836         unsigned int idx, ptr, count, res;
837
838         if (snd_BUG_ON(!viadev->tbl_entries))
839                 return 0;
840         if (!(inb(VIADEV_REG(viadev, OFFSET_STATUS)) & VIA_REG_STAT_ACTIVE))
841                 return 0;
842
843         spin_lock(&chip->reg_lock);
844         count = inl(VIADEV_REG(viadev, OFFSET_CURR_COUNT)) & 0xffffff;
845         /* The via686a does not have the current index register,
846          * so we need to calculate the index from CURR_PTR.
847          */
848         ptr = inl(VIADEV_REG(viadev, OFFSET_CURR_PTR));
849         if (ptr <= (unsigned int)viadev->table.addr)
850                 idx = 0;
851         else /* CURR_PTR holds the address + 8 */
852                 idx = ((ptr - (unsigned int)viadev->table.addr) / 8 - 1) % viadev->tbl_entries;
853         res = calc_linear_pos(viadev, idx, count);
854         viadev->lastpos = res; /* remember the last position */
855         spin_unlock(&chip->reg_lock);
856
857         return bytes_to_frames(substream->runtime, res);
858 }
859
860 /*
861  * get the current pointer on via823x
862  */
863 static snd_pcm_uframes_t snd_via8233_pcm_pointer(struct snd_pcm_substream *substream)
864 {
865         struct via82xx *chip = snd_pcm_substream_chip(substream);
866         struct viadev *viadev = substream->runtime->private_data;
867         unsigned int idx, count, res;
868         int status;
869         
870         if (snd_BUG_ON(!viadev->tbl_entries))
871                 return 0;
872
873         spin_lock(&chip->reg_lock);
874         count = inl(VIADEV_REG(viadev, OFFSET_CURR_COUNT));
875         status = viadev->in_interrupt;
876         if (!status)
877                 status = inb(VIADEV_REG(viadev, OFFSET_STATUS));
878
879         /* An apparent bug in the 8251 is worked around by sending a 
880          * REG_CTRL_START. */
881         if (chip->revision == VIA_REV_8251 && (status & VIA_REG_STAT_EOL))
882                 snd_via82xx_pcm_trigger(substream, SNDRV_PCM_TRIGGER_START);
883
884         if (!(status & VIA_REG_STAT_ACTIVE)) {
885                 res = 0;
886                 goto unlock;
887         }
888         if (count & 0xffffff) {
889                 idx = count >> 24;
890                 if (idx >= viadev->tbl_entries) {
891 #ifdef POINTER_DEBUG
892                         printk(KERN_DEBUG "fail: invalid idx = %i/%i\n", idx,
893                                viadev->tbl_entries);
894 #endif
895                         res = viadev->lastpos;
896                 } else {
897                         count &= 0xffffff;
898                         res = calc_linear_pos(viadev, idx, count);
899                 }
900         } else {
901                 res = viadev->hwptr_done;
902                 if (!viadev->in_interrupt) {
903                         if (status & VIA_REG_STAT_EOL) {
904                                 res = 0;
905                         } else
906                                 if (status & VIA_REG_STAT_FLAG) {
907                                         res += viadev->fragsize;
908                                 }
909                 }
910         }                           
911 unlock:
912         viadev->lastpos = res;
913         spin_unlock(&chip->reg_lock);
914
915         return bytes_to_frames(substream->runtime, res);
916 }
917
918
919 /*
920  * hw_params callback:
921  * allocate the buffer and build up the buffer description table
922  */
923 static int snd_via82xx_hw_params(struct snd_pcm_substream *substream,
924                                  struct snd_pcm_hw_params *hw_params)
925 {
926         struct via82xx *chip = snd_pcm_substream_chip(substream);
927         struct viadev *viadev = substream->runtime->private_data;
928         int err;
929
930         err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
931         if (err < 0)
932                 return err;
933         err = build_via_table(viadev, substream, chip->pci,
934                               params_periods(hw_params),
935                               params_period_bytes(hw_params));
936         if (err < 0)
937                 return err;
938
939         return 0;
940 }
941
942 /*
943  * hw_free callback:
944  * clean up the buffer description table and release the buffer
945  */
946 static int snd_via82xx_hw_free(struct snd_pcm_substream *substream)
947 {
948         struct via82xx *chip = snd_pcm_substream_chip(substream);
949         struct viadev *viadev = substream->runtime->private_data;
950
951         clean_via_table(viadev, substream, chip->pci);
952         snd_pcm_lib_free_pages(substream);
953         return 0;
954 }
955
956
957 /*
958  * set up the table pointer
959  */
960 static void snd_via82xx_set_table_ptr(struct via82xx *chip, struct viadev *viadev)
961 {
962         snd_via82xx_codec_ready(chip, 0);
963         outl((u32)viadev->table.addr, VIADEV_REG(viadev, OFFSET_TABLE_PTR));
964         udelay(20);
965         snd_via82xx_codec_ready(chip, 0);
966 }
967
968 /*
969  * prepare callback for playback and capture on via686
970  */
971 static void via686_setup_format(struct via82xx *chip, struct viadev *viadev,
972                                 struct snd_pcm_runtime *runtime)
973 {
974         snd_via82xx_channel_reset(chip, viadev);
975         /* this must be set after channel_reset */
976         snd_via82xx_set_table_ptr(chip, viadev);
977         outb(VIA_REG_TYPE_AUTOSTART |
978              (runtime->format == SNDRV_PCM_FORMAT_S16_LE ? VIA_REG_TYPE_16BIT : 0) |
979              (runtime->channels > 1 ? VIA_REG_TYPE_STEREO : 0) |
980              ((viadev->reg_offset & 0x10) == 0 ? VIA_REG_TYPE_INT_LSAMPLE : 0) |
981              VIA_REG_TYPE_INT_EOL |
982              VIA_REG_TYPE_INT_FLAG, VIADEV_REG(viadev, OFFSET_TYPE));
983 }
984
985 static int snd_via686_playback_prepare(struct snd_pcm_substream *substream)
986 {
987         struct via82xx *chip = snd_pcm_substream_chip(substream);
988         struct viadev *viadev = substream->runtime->private_data;
989         struct snd_pcm_runtime *runtime = substream->runtime;
990
991         snd_ac97_set_rate(chip->ac97, AC97_PCM_FRONT_DAC_RATE, runtime->rate);
992         snd_ac97_set_rate(chip->ac97, AC97_SPDIF, runtime->rate);
993         via686_setup_format(chip, viadev, runtime);
994         return 0;
995 }
996
997 static int snd_via686_capture_prepare(struct snd_pcm_substream *substream)
998 {
999         struct via82xx *chip = snd_pcm_substream_chip(substream);
1000         struct viadev *viadev = substream->runtime->private_data;
1001         struct snd_pcm_runtime *runtime = substream->runtime;
1002
1003         snd_ac97_set_rate(chip->ac97, AC97_PCM_LR_ADC_RATE, runtime->rate);
1004         via686_setup_format(chip, viadev, runtime);
1005         return 0;
1006 }
1007
1008 /*
1009  * lock the current rate
1010  */
1011 static int via_lock_rate(struct via_rate_lock *rec, int rate)
1012 {
1013         int changed = 0;
1014
1015         spin_lock_irq(&rec->lock);
1016         if (rec->rate != rate) {
1017                 if (rec->rate && rec->used > 1) /* already set */
1018                         changed = -EINVAL;
1019                 else {
1020                         rec->rate = rate;
1021                         changed = 1;
1022                 }
1023         }
1024         spin_unlock_irq(&rec->lock);
1025         return changed;
1026 }
1027
1028 /*
1029  * prepare callback for DSX playback on via823x
1030  */
1031 static int snd_via8233_playback_prepare(struct snd_pcm_substream *substream)
1032 {
1033         struct via82xx *chip = snd_pcm_substream_chip(substream);
1034         struct viadev *viadev = substream->runtime->private_data;
1035         struct snd_pcm_runtime *runtime = substream->runtime;
1036         int ac97_rate = chip->dxs_src ? 48000 : runtime->rate;
1037         int rate_changed;
1038         u32 rbits;
1039
1040         if ((rate_changed = via_lock_rate(&chip->rates[0], ac97_rate)) < 0)
1041                 return rate_changed;
1042         if (rate_changed)
1043                 snd_ac97_set_rate(chip->ac97, AC97_PCM_FRONT_DAC_RATE,
1044                                   chip->no_vra ? 48000 : runtime->rate);
1045         if (chip->spdif_on && viadev->reg_offset == 0x30)
1046                 snd_ac97_set_rate(chip->ac97, AC97_SPDIF, runtime->rate);
1047
1048         if (runtime->rate == 48000)
1049                 rbits = 0xfffff;
1050         else
1051                 rbits = (0x100000 / 48000) * runtime->rate +
1052                         ((0x100000 % 48000) * runtime->rate) / 48000;
1053         snd_BUG_ON(rbits & ~0xfffff);
1054         snd_via82xx_channel_reset(chip, viadev);
1055         snd_via82xx_set_table_ptr(chip, viadev);
1056         outb(chip->playback_volume[viadev->reg_offset / 0x10][0],
1057              VIADEV_REG(viadev, OFS_PLAYBACK_VOLUME_L));
1058         outb(chip->playback_volume[viadev->reg_offset / 0x10][1],
1059              VIADEV_REG(viadev, OFS_PLAYBACK_VOLUME_R));
1060         outl((runtime->format == SNDRV_PCM_FORMAT_S16_LE ? VIA8233_REG_TYPE_16BIT : 0) | /* format */
1061              (runtime->channels > 1 ? VIA8233_REG_TYPE_STEREO : 0) | /* stereo */
1062              rbits | /* rate */
1063              0xff000000,    /* STOP index is never reached */
1064              VIADEV_REG(viadev, OFFSET_STOP_IDX));
1065         udelay(20);
1066         snd_via82xx_codec_ready(chip, 0);
1067         return 0;
1068 }
1069
1070 /*
1071  * prepare callback for multi-channel playback on via823x
1072  */
1073 static int snd_via8233_multi_prepare(struct snd_pcm_substream *substream)
1074 {
1075         struct via82xx *chip = snd_pcm_substream_chip(substream);
1076         struct viadev *viadev = substream->runtime->private_data;
1077         struct snd_pcm_runtime *runtime = substream->runtime;
1078         unsigned int slots;
1079         int fmt;
1080
1081         if (via_lock_rate(&chip->rates[0], runtime->rate) < 0)
1082                 return -EINVAL;
1083         snd_ac97_set_rate(chip->ac97, AC97_PCM_FRONT_DAC_RATE, runtime->rate);
1084         snd_ac97_set_rate(chip->ac97, AC97_PCM_SURR_DAC_RATE, runtime->rate);
1085         snd_ac97_set_rate(chip->ac97, AC97_PCM_LFE_DAC_RATE, runtime->rate);
1086         snd_ac97_set_rate(chip->ac97, AC97_SPDIF, runtime->rate);
1087         snd_via82xx_channel_reset(chip, viadev);
1088         snd_via82xx_set_table_ptr(chip, viadev);
1089
1090         fmt = (runtime->format == SNDRV_PCM_FORMAT_S16_LE) ?
1091                 VIA_REG_MULTPLAY_FMT_16BIT : VIA_REG_MULTPLAY_FMT_8BIT;
1092         fmt |= runtime->channels << 4;
1093         outb(fmt, VIADEV_REG(viadev, OFS_MULTPLAY_FORMAT));
1094 #if 0
1095         if (chip->revision == VIA_REV_8233A)
1096                 slots = 0;
1097         else
1098 #endif
1099         {
1100                 /* set sample number to slot 3, 4, 7, 8, 6, 9 (for VIA8233/C,8235) */
1101                 /* corresponding to FL, FR, RL, RR, C, LFE ?? */
1102                 switch (runtime->channels) {
1103                 case 1: slots = (1<<0) | (1<<4); break;
1104                 case 2: slots = (1<<0) | (2<<4); break;
1105                 case 3: slots = (1<<0) | (2<<4) | (5<<8); break;
1106                 case 4: slots = (1<<0) | (2<<4) | (3<<8) | (4<<12); break;
1107                 case 5: slots = (1<<0) | (2<<4) | (3<<8) | (4<<12) | (5<<16); break;
1108                 case 6: slots = (1<<0) | (2<<4) | (3<<8) | (4<<12) | (5<<16) | (6<<20); break;
1109                 default: slots = 0; break;
1110                 }
1111         }
1112         /* STOP index is never reached */
1113         outl(0xff000000 | slots, VIADEV_REG(viadev, OFFSET_STOP_IDX));
1114         udelay(20);
1115         snd_via82xx_codec_ready(chip, 0);
1116         return 0;
1117 }
1118
1119 /*
1120  * prepare callback for capture on via823x
1121  */
1122 static int snd_via8233_capture_prepare(struct snd_pcm_substream *substream)
1123 {
1124         struct via82xx *chip = snd_pcm_substream_chip(substream);
1125         struct viadev *viadev = substream->runtime->private_data;
1126         struct snd_pcm_runtime *runtime = substream->runtime;
1127
1128         if (via_lock_rate(&chip->rates[1], runtime->rate) < 0)
1129                 return -EINVAL;
1130         snd_ac97_set_rate(chip->ac97, AC97_PCM_LR_ADC_RATE, runtime->rate);
1131         snd_via82xx_channel_reset(chip, viadev);
1132         snd_via82xx_set_table_ptr(chip, viadev);
1133         outb(VIA_REG_CAPTURE_FIFO_ENABLE, VIADEV_REG(viadev, OFS_CAPTURE_FIFO));
1134         outl((runtime->format == SNDRV_PCM_FORMAT_S16_LE ? VIA8233_REG_TYPE_16BIT : 0) |
1135              (runtime->channels > 1 ? VIA8233_REG_TYPE_STEREO : 0) |
1136              0xff000000,    /* STOP index is never reached */
1137              VIADEV_REG(viadev, OFFSET_STOP_IDX));
1138         udelay(20);
1139         snd_via82xx_codec_ready(chip, 0);
1140         return 0;
1141 }
1142
1143
1144 /*
1145  * pcm hardware definition, identical for both playback and capture
1146  */
1147 static struct snd_pcm_hardware snd_via82xx_hw =
1148 {
1149         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1150                                  SNDRV_PCM_INFO_BLOCK_TRANSFER |
1151                                  SNDRV_PCM_INFO_MMAP_VALID |
1152                                  /* SNDRV_PCM_INFO_RESUME | */
1153                                  SNDRV_PCM_INFO_PAUSE),
1154         .formats =              SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE,
1155         .rates =                SNDRV_PCM_RATE_48000,
1156         .rate_min =             48000,
1157         .rate_max =             48000,
1158         .channels_min =         1,
1159         .channels_max =         2,
1160         .buffer_bytes_max =     VIA_MAX_BUFSIZE,
1161         .period_bytes_min =     32,
1162         .period_bytes_max =     VIA_MAX_BUFSIZE / 2,
1163         .periods_min =          2,
1164         .periods_max =          VIA_TABLE_SIZE / 2,
1165         .fifo_size =            0,
1166 };
1167
1168
1169 /*
1170  * open callback skeleton
1171  */
1172 static int snd_via82xx_pcm_open(struct via82xx *chip, struct viadev *viadev,
1173                                 struct snd_pcm_substream *substream)
1174 {
1175         struct snd_pcm_runtime *runtime = substream->runtime;
1176         int err;
1177         struct via_rate_lock *ratep;
1178         bool use_src = false;
1179
1180         runtime->hw = snd_via82xx_hw;
1181         
1182         /* set the hw rate condition */
1183         ratep = &chip->rates[viadev->direction];
1184         spin_lock_irq(&ratep->lock);
1185         ratep->used++;
1186         if (chip->spdif_on && viadev->reg_offset == 0x30) {
1187                 /* DXS#3 and spdif is on */
1188                 runtime->hw.rates = chip->ac97->rates[AC97_RATES_SPDIF];
1189                 snd_pcm_limit_hw_rates(runtime);
1190         } else if (chip->dxs_fixed && viadev->reg_offset < 0x40) {
1191                 /* fixed DXS playback rate */
1192                 runtime->hw.rates = SNDRV_PCM_RATE_48000;
1193                 runtime->hw.rate_min = runtime->hw.rate_max = 48000;
1194         } else if (chip->dxs_src && viadev->reg_offset < 0x40) {
1195                 /* use full SRC capabilities of DXS */
1196                 runtime->hw.rates = (SNDRV_PCM_RATE_CONTINUOUS |
1197                                      SNDRV_PCM_RATE_8000_48000);
1198                 runtime->hw.rate_min = 8000;
1199                 runtime->hw.rate_max = 48000;
1200                 use_src = true;
1201         } else if (! ratep->rate) {
1202                 int idx = viadev->direction ? AC97_RATES_ADC : AC97_RATES_FRONT_DAC;
1203                 runtime->hw.rates = chip->ac97->rates[idx];
1204                 snd_pcm_limit_hw_rates(runtime);
1205         } else {
1206                 /* a fixed rate */
1207                 runtime->hw.rates = SNDRV_PCM_RATE_KNOT;
1208                 runtime->hw.rate_max = runtime->hw.rate_min = ratep->rate;
1209         }
1210         spin_unlock_irq(&ratep->lock);
1211
1212         /* we may remove following constaint when we modify table entries
1213            in interrupt */
1214         if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
1215                 return err;
1216
1217         if (use_src) {
1218                 err = snd_pcm_hw_rule_noresample(runtime, 48000);
1219                 if (err < 0)
1220                         return err;
1221         }
1222
1223         runtime->private_data = viadev;
1224         viadev->substream = substream;
1225
1226         return 0;
1227 }
1228
1229
1230 /*
1231  * open callback for playback on via686
1232  */
1233 static int snd_via686_playback_open(struct snd_pcm_substream *substream)
1234 {
1235         struct via82xx *chip = snd_pcm_substream_chip(substream);
1236         struct viadev *viadev = &chip->devs[chip->playback_devno + substream->number];
1237         int err;
1238
1239         if ((err = snd_via82xx_pcm_open(chip, viadev, substream)) < 0)
1240                 return err;
1241         return 0;
1242 }
1243
1244 /*
1245  * open callback for playback on via823x DXS
1246  */
1247 static int snd_via8233_playback_open(struct snd_pcm_substream *substream)
1248 {
1249         struct via82xx *chip = snd_pcm_substream_chip(substream);
1250         struct viadev *viadev;
1251         unsigned int stream;
1252         int err;
1253
1254         viadev = &chip->devs[chip->playback_devno + substream->number];
1255         if ((err = snd_via82xx_pcm_open(chip, viadev, substream)) < 0)
1256                 return err;
1257         stream = viadev->reg_offset / 0x10;
1258         if (chip->dxs_controls[stream]) {
1259                 chip->playback_volume[stream][0] =
1260                                 VIA_DXS_MAX_VOLUME - (dxs_init_volume & 31);
1261                 chip->playback_volume[stream][1] =
1262                                 VIA_DXS_MAX_VOLUME - (dxs_init_volume & 31);
1263                 chip->dxs_controls[stream]->vd[0].access &=
1264                         ~SNDRV_CTL_ELEM_ACCESS_INACTIVE;
1265                 snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE |
1266                                SNDRV_CTL_EVENT_MASK_INFO,
1267                                &chip->dxs_controls[stream]->id);
1268         }
1269         return 0;
1270 }
1271
1272 /*
1273  * open callback for playback on via823x multi-channel
1274  */
1275 static int snd_via8233_multi_open(struct snd_pcm_substream *substream)
1276 {
1277         struct via82xx *chip = snd_pcm_substream_chip(substream);
1278         struct viadev *viadev = &chip->devs[chip->multi_devno];
1279         int err;
1280         /* channels constraint for VIA8233A
1281          * 3 and 5 channels are not supported
1282          */
1283         static unsigned int channels[] = {
1284                 1, 2, 4, 6
1285         };
1286         static struct snd_pcm_hw_constraint_list hw_constraints_channels = {
1287                 .count = ARRAY_SIZE(channels),
1288                 .list = channels,
1289                 .mask = 0,
1290         };
1291
1292         if ((err = snd_via82xx_pcm_open(chip, viadev, substream)) < 0)
1293                 return err;
1294         substream->runtime->hw.channels_max = 6;
1295         if (chip->revision == VIA_REV_8233A)
1296                 snd_pcm_hw_constraint_list(substream->runtime, 0,
1297                                            SNDRV_PCM_HW_PARAM_CHANNELS,
1298                                            &hw_constraints_channels);
1299         return 0;
1300 }
1301
1302 /*
1303  * open callback for capture on via686 and via823x
1304  */
1305 static int snd_via82xx_capture_open(struct snd_pcm_substream *substream)
1306 {
1307         struct via82xx *chip = snd_pcm_substream_chip(substream);
1308         struct viadev *viadev = &chip->devs[chip->capture_devno + substream->pcm->device];
1309
1310         return snd_via82xx_pcm_open(chip, viadev, substream);
1311 }
1312
1313 /*
1314  * close callback
1315  */
1316 static int snd_via82xx_pcm_close(struct snd_pcm_substream *substream)
1317 {
1318         struct via82xx *chip = snd_pcm_substream_chip(substream);
1319         struct viadev *viadev = substream->runtime->private_data;
1320         struct via_rate_lock *ratep;
1321
1322         /* release the rate lock */
1323         ratep = &chip->rates[viadev->direction];
1324         spin_lock_irq(&ratep->lock);
1325         ratep->used--;
1326         if (! ratep->used)
1327                 ratep->rate = 0;
1328         spin_unlock_irq(&ratep->lock);
1329         if (! ratep->rate) {
1330                 if (! viadev->direction) {
1331                         snd_ac97_update_power(chip->ac97,
1332                                               AC97_PCM_FRONT_DAC_RATE, 0);
1333                         snd_ac97_update_power(chip->ac97,
1334                                               AC97_PCM_SURR_DAC_RATE, 0);
1335                         snd_ac97_update_power(chip->ac97,
1336                                               AC97_PCM_LFE_DAC_RATE, 0);
1337                 } else
1338                         snd_ac97_update_power(chip->ac97,
1339                                               AC97_PCM_LR_ADC_RATE, 0);
1340         }
1341         viadev->substream = NULL;
1342         return 0;
1343 }
1344
1345 static int snd_via8233_playback_close(struct snd_pcm_substream *substream)
1346 {
1347         struct via82xx *chip = snd_pcm_substream_chip(substream);
1348         struct viadev *viadev = substream->runtime->private_data;
1349         unsigned int stream;
1350
1351         stream = viadev->reg_offset / 0x10;
1352         if (chip->dxs_controls[stream]) {
1353                 chip->dxs_controls[stream]->vd[0].access |=
1354                         SNDRV_CTL_ELEM_ACCESS_INACTIVE;
1355                 snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_INFO,
1356                                &chip->dxs_controls[stream]->id);
1357         }
1358         return snd_via82xx_pcm_close(substream);
1359 }
1360
1361
1362 /* via686 playback callbacks */
1363 static struct snd_pcm_ops snd_via686_playback_ops = {
1364         .open =         snd_via686_playback_open,
1365         .close =        snd_via82xx_pcm_close,
1366         .ioctl =        snd_pcm_lib_ioctl,
1367         .hw_params =    snd_via82xx_hw_params,
1368         .hw_free =      snd_via82xx_hw_free,
1369         .prepare =      snd_via686_playback_prepare,
1370         .trigger =      snd_via82xx_pcm_trigger,
1371         .pointer =      snd_via686_pcm_pointer,
1372         .page =         snd_pcm_sgbuf_ops_page,
1373 };
1374
1375 /* via686 capture callbacks */
1376 static struct snd_pcm_ops snd_via686_capture_ops = {
1377         .open =         snd_via82xx_capture_open,
1378         .close =        snd_via82xx_pcm_close,
1379         .ioctl =        snd_pcm_lib_ioctl,
1380         .hw_params =    snd_via82xx_hw_params,
1381         .hw_free =      snd_via82xx_hw_free,
1382         .prepare =      snd_via686_capture_prepare,
1383         .trigger =      snd_via82xx_pcm_trigger,
1384         .pointer =      snd_via686_pcm_pointer,
1385         .page =         snd_pcm_sgbuf_ops_page,
1386 };
1387
1388 /* via823x DSX playback callbacks */
1389 static struct snd_pcm_ops snd_via8233_playback_ops = {
1390         .open =         snd_via8233_playback_open,
1391         .close =        snd_via8233_playback_close,
1392         .ioctl =        snd_pcm_lib_ioctl,
1393         .hw_params =    snd_via82xx_hw_params,
1394         .hw_free =      snd_via82xx_hw_free,
1395         .prepare =      snd_via8233_playback_prepare,
1396         .trigger =      snd_via82xx_pcm_trigger,
1397         .pointer =      snd_via8233_pcm_pointer,
1398         .page =         snd_pcm_sgbuf_ops_page,
1399 };
1400
1401 /* via823x multi-channel playback callbacks */
1402 static struct snd_pcm_ops snd_via8233_multi_ops = {
1403         .open =         snd_via8233_multi_open,
1404         .close =        snd_via82xx_pcm_close,
1405         .ioctl =        snd_pcm_lib_ioctl,
1406         .hw_params =    snd_via82xx_hw_params,
1407         .hw_free =      snd_via82xx_hw_free,
1408         .prepare =      snd_via8233_multi_prepare,
1409         .trigger =      snd_via82xx_pcm_trigger,
1410         .pointer =      snd_via8233_pcm_pointer,
1411         .page =         snd_pcm_sgbuf_ops_page,
1412 };
1413
1414 /* via823x capture callbacks */
1415 static struct snd_pcm_ops snd_via8233_capture_ops = {
1416         .open =         snd_via82xx_capture_open,
1417         .close =        snd_via82xx_pcm_close,
1418         .ioctl =        snd_pcm_lib_ioctl,
1419         .hw_params =    snd_via82xx_hw_params,
1420         .hw_free =      snd_via82xx_hw_free,
1421         .prepare =      snd_via8233_capture_prepare,
1422         .trigger =      snd_via82xx_pcm_trigger,
1423         .pointer =      snd_via8233_pcm_pointer,
1424         .page =         snd_pcm_sgbuf_ops_page,
1425 };
1426
1427
1428 static void init_viadev(struct via82xx *chip, int idx, unsigned int reg_offset,
1429                         int shadow_pos, int direction)
1430 {
1431         chip->devs[idx].reg_offset = reg_offset;
1432         chip->devs[idx].shadow_shift = shadow_pos * 4;
1433         chip->devs[idx].direction = direction;
1434         chip->devs[idx].port = chip->port + reg_offset;
1435 }
1436
1437 /*
1438  * create pcm instances for VIA8233, 8233C and 8235 (not 8233A)
1439  */
1440 static int __devinit snd_via8233_pcm_new(struct via82xx *chip)
1441 {
1442         struct snd_pcm *pcm;
1443         int i, err;
1444
1445         chip->playback_devno = 0;       /* x 4 */
1446         chip->multi_devno = 4;          /* x 1 */
1447         chip->capture_devno = 5;        /* x 2 */
1448         chip->num_devs = 7;
1449         chip->intr_mask = 0x33033333; /* FLAG|EOL for rec0-1, mc, sdx0-3 */
1450
1451         /* PCM #0:  4 DSX playbacks and 1 capture */
1452         err = snd_pcm_new(chip->card, chip->card->shortname, 0, 4, 1, &pcm);
1453         if (err < 0)
1454                 return err;
1455         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_playback_ops);
1456         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via8233_capture_ops);
1457         pcm->private_data = chip;
1458         strcpy(pcm->name, chip->card->shortname);
1459         chip->pcms[0] = pcm;
1460         /* set up playbacks */
1461         for (i = 0; i < 4; i++)
1462                 init_viadev(chip, i, 0x10 * i, i, 0);
1463         /* capture */
1464         init_viadev(chip, chip->capture_devno, VIA_REG_CAPTURE_8233_STATUS, 6, 1);
1465
1466         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1467                                               snd_dma_pci_data(chip->pci),
1468                                               64*1024, VIA_MAX_BUFSIZE);
1469
1470         /* PCM #1:  multi-channel playback and 2nd capture */
1471         err = snd_pcm_new(chip->card, chip->card->shortname, 1, 1, 1, &pcm);
1472         if (err < 0)
1473                 return err;
1474         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_multi_ops);
1475         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via8233_capture_ops);
1476         pcm->private_data = chip;
1477         strcpy(pcm->name, chip->card->shortname);
1478         chip->pcms[1] = pcm;
1479         /* set up playback */
1480         init_viadev(chip, chip->multi_devno, VIA_REG_MULTPLAY_STATUS, 4, 0);
1481         /* set up capture */
1482         init_viadev(chip, chip->capture_devno + 1, VIA_REG_CAPTURE_8233_STATUS + 0x10, 7, 1);
1483
1484         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1485                                               snd_dma_pci_data(chip->pci),
1486                                               64*1024, VIA_MAX_BUFSIZE);
1487         return 0;
1488 }
1489
1490 /*
1491  * create pcm instances for VIA8233A
1492  */
1493 static int __devinit snd_via8233a_pcm_new(struct via82xx *chip)
1494 {
1495         struct snd_pcm *pcm;
1496         int err;
1497
1498         chip->multi_devno = 0;
1499         chip->playback_devno = 1;
1500         chip->capture_devno = 2;
1501         chip->num_devs = 3;
1502         chip->intr_mask = 0x03033000; /* FLAG|EOL for rec0, mc, sdx3 */
1503
1504         /* PCM #0:  multi-channel playback and capture */
1505         err = snd_pcm_new(chip->card, chip->card->shortname, 0, 1, 1, &pcm);
1506         if (err < 0)
1507                 return err;
1508         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_multi_ops);
1509         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via8233_capture_ops);
1510         pcm->private_data = chip;
1511         strcpy(pcm->name, chip->card->shortname);
1512         chip->pcms[0] = pcm;
1513         /* set up playback */
1514         init_viadev(chip, chip->multi_devno, VIA_REG_MULTPLAY_STATUS, 4, 0);
1515         /* capture */
1516         init_viadev(chip, chip->capture_devno, VIA_REG_CAPTURE_8233_STATUS, 6, 1);
1517
1518         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1519                                               snd_dma_pci_data(chip->pci),
1520                                               64*1024, VIA_MAX_BUFSIZE);
1521
1522         /* SPDIF supported? */
1523         if (! ac97_can_spdif(chip->ac97))
1524                 return 0;
1525
1526         /* PCM #1:  DXS3 playback (for spdif) */
1527         err = snd_pcm_new(chip->card, chip->card->shortname, 1, 1, 0, &pcm);
1528         if (err < 0)
1529                 return err;
1530         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_playback_ops);
1531         pcm->private_data = chip;
1532         strcpy(pcm->name, chip->card->shortname);
1533         chip->pcms[1] = pcm;
1534         /* set up playback */
1535         init_viadev(chip, chip->playback_devno, 0x30, 3, 0);
1536
1537         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1538                                               snd_dma_pci_data(chip->pci),
1539                                               64*1024, VIA_MAX_BUFSIZE);
1540         return 0;
1541 }
1542
1543 /*
1544  * create a pcm instance for via686a/b
1545  */
1546 static int __devinit snd_via686_pcm_new(struct via82xx *chip)
1547 {
1548         struct snd_pcm *pcm;
1549         int err;
1550
1551         chip->playback_devno = 0;
1552         chip->capture_devno = 1;
1553         chip->num_devs = 2;
1554         chip->intr_mask = 0x77; /* FLAG | EOL for PB, CP, FM */
1555
1556         err = snd_pcm_new(chip->card, chip->card->shortname, 0, 1, 1, &pcm);
1557         if (err < 0)
1558                 return err;
1559         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via686_playback_ops);
1560         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via686_capture_ops);
1561         pcm->private_data = chip;
1562         strcpy(pcm->name, chip->card->shortname);
1563         chip->pcms[0] = pcm;
1564         init_viadev(chip, 0, VIA_REG_PLAYBACK_STATUS, 0, 0);
1565         init_viadev(chip, 1, VIA_REG_CAPTURE_STATUS, 0, 1);
1566
1567         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1568                                               snd_dma_pci_data(chip->pci),
1569                                               64*1024, VIA_MAX_BUFSIZE);
1570         return 0;
1571 }
1572
1573
1574 /*
1575  *  Mixer part
1576  */
1577
1578 static int snd_via8233_capture_source_info(struct snd_kcontrol *kcontrol,
1579                                            struct snd_ctl_elem_info *uinfo)
1580 {
1581         /* formerly they were "Line" and "Mic", but it looks like that they
1582          * have nothing to do with the actual physical connections...
1583          */
1584         static char *texts[2] = {
1585                 "Input1", "Input2"
1586         };
1587         uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
1588         uinfo->count = 1;
1589         uinfo->value.enumerated.items = 2;
1590         if (uinfo->value.enumerated.item >= 2)
1591                 uinfo->value.enumerated.item = 1;
1592         strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
1593         return 0;
1594 }
1595
1596 static int snd_via8233_capture_source_get(struct snd_kcontrol *kcontrol,
1597                                           struct snd_ctl_elem_value *ucontrol)
1598 {
1599         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1600         unsigned long port = chip->port + (kcontrol->id.index ? (VIA_REG_CAPTURE_CHANNEL + 0x10) : VIA_REG_CAPTURE_CHANNEL);
1601         ucontrol->value.enumerated.item[0] = inb(port) & VIA_REG_CAPTURE_CHANNEL_MIC ? 1 : 0;
1602         return 0;
1603 }
1604
1605 static int snd_via8233_capture_source_put(struct snd_kcontrol *kcontrol,
1606                                           struct snd_ctl_elem_value *ucontrol)
1607 {
1608         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1609         unsigned long port = chip->port + (kcontrol->id.index ? (VIA_REG_CAPTURE_CHANNEL + 0x10) : VIA_REG_CAPTURE_CHANNEL);
1610         u8 val, oval;
1611
1612         spin_lock_irq(&chip->reg_lock);
1613         oval = inb(port);
1614         val = oval & ~VIA_REG_CAPTURE_CHANNEL_MIC;
1615         if (ucontrol->value.enumerated.item[0])
1616                 val |= VIA_REG_CAPTURE_CHANNEL_MIC;
1617         if (val != oval)
1618                 outb(val, port);
1619         spin_unlock_irq(&chip->reg_lock);
1620         return val != oval;
1621 }
1622
1623 static struct snd_kcontrol_new snd_via8233_capture_source __devinitdata = {
1624         .name = "Input Source Select",
1625         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1626         .info = snd_via8233_capture_source_info,
1627         .get = snd_via8233_capture_source_get,
1628         .put = snd_via8233_capture_source_put,
1629 };
1630
1631 #define snd_via8233_dxs3_spdif_info     snd_ctl_boolean_mono_info
1632
1633 static int snd_via8233_dxs3_spdif_get(struct snd_kcontrol *kcontrol,
1634                                       struct snd_ctl_elem_value *ucontrol)
1635 {
1636         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1637         u8 val;
1638
1639         pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &val);
1640         ucontrol->value.integer.value[0] = (val & VIA8233_SPDIF_DX3) ? 1 : 0;
1641         return 0;
1642 }
1643
1644 static int snd_via8233_dxs3_spdif_put(struct snd_kcontrol *kcontrol,
1645                                       struct snd_ctl_elem_value *ucontrol)
1646 {
1647         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1648         u8 val, oval;
1649
1650         pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &oval);
1651         val = oval & ~VIA8233_SPDIF_DX3;
1652         if (ucontrol->value.integer.value[0])
1653                 val |= VIA8233_SPDIF_DX3;
1654         /* save the spdif flag for rate filtering */
1655         chip->spdif_on = ucontrol->value.integer.value[0] ? 1 : 0;
1656         if (val != oval) {
1657                 pci_write_config_byte(chip->pci, VIA8233_SPDIF_CTRL, val);
1658                 return 1;
1659         }
1660         return 0;
1661 }
1662
1663 static struct snd_kcontrol_new snd_via8233_dxs3_spdif_control __devinitdata = {
1664         .name = SNDRV_CTL_NAME_IEC958("Output ",NONE,SWITCH),
1665         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1666         .info = snd_via8233_dxs3_spdif_info,
1667         .get = snd_via8233_dxs3_spdif_get,
1668         .put = snd_via8233_dxs3_spdif_put,
1669 };
1670
1671 static int snd_via8233_dxs_volume_info(struct snd_kcontrol *kcontrol,
1672                                        struct snd_ctl_elem_info *uinfo)
1673 {
1674         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
1675         uinfo->count = 2;
1676         uinfo->value.integer.min = 0;
1677         uinfo->value.integer.max = VIA_DXS_MAX_VOLUME;
1678         return 0;
1679 }
1680
1681 static int snd_via8233_dxs_volume_get(struct snd_kcontrol *kcontrol,
1682                                       struct snd_ctl_elem_value *ucontrol)
1683 {
1684         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1685         unsigned int idx = kcontrol->id.subdevice;
1686
1687         ucontrol->value.integer.value[0] = VIA_DXS_MAX_VOLUME - chip->playback_volume[idx][0];
1688         ucontrol->value.integer.value[1] = VIA_DXS_MAX_VOLUME - chip->playback_volume[idx][1];
1689         return 0;
1690 }
1691
1692 static int snd_via8233_pcmdxs_volume_get(struct snd_kcontrol *kcontrol,
1693                                          struct snd_ctl_elem_value *ucontrol)
1694 {
1695         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1696         ucontrol->value.integer.value[0] = VIA_DXS_MAX_VOLUME - chip->playback_volume_c[0];
1697         ucontrol->value.integer.value[1] = VIA_DXS_MAX_VOLUME - chip->playback_volume_c[1];
1698         return 0;
1699 }
1700
1701 static int snd_via8233_dxs_volume_put(struct snd_kcontrol *kcontrol,
1702                                       struct snd_ctl_elem_value *ucontrol)
1703 {
1704         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1705         unsigned int idx = kcontrol->id.subdevice;
1706         unsigned long port = chip->port + 0x10 * idx;
1707         unsigned char val;
1708         int i, change = 0;
1709
1710         for (i = 0; i < 2; i++) {
1711                 val = ucontrol->value.integer.value[i];
1712                 if (val > VIA_DXS_MAX_VOLUME)
1713                         val = VIA_DXS_MAX_VOLUME;
1714                 val = VIA_DXS_MAX_VOLUME - val;
1715                 change |= val != chip->playback_volume[idx][i];
1716                 if (change) {
1717                         chip->playback_volume[idx][i] = val;
1718                         outb(val, port + VIA_REG_OFS_PLAYBACK_VOLUME_L + i);
1719                 }
1720         }
1721         return change;
1722 }
1723
1724 static int snd_via8233_pcmdxs_volume_put(struct snd_kcontrol *kcontrol,
1725                                          struct snd_ctl_elem_value *ucontrol)
1726 {
1727         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1728         unsigned int idx;
1729         unsigned char val;
1730         int i, change = 0;
1731
1732         for (i = 0; i < 2; i++) {
1733                 val = ucontrol->value.integer.value[i];
1734                 if (val > VIA_DXS_MAX_VOLUME)
1735                         val = VIA_DXS_MAX_VOLUME;
1736                 val = VIA_DXS_MAX_VOLUME - val;
1737                 if (val != chip->playback_volume_c[i]) {
1738                         change = 1;
1739                         chip->playback_volume_c[i] = val;
1740                         for (idx = 0; idx < 4; idx++) {
1741                                 unsigned long port = chip->port + 0x10 * idx;
1742                                 chip->playback_volume[idx][i] = val;
1743                                 outb(val, port + VIA_REG_OFS_PLAYBACK_VOLUME_L + i);
1744                         }
1745                 }
1746         }
1747         return change;
1748 }
1749
1750 static const DECLARE_TLV_DB_SCALE(db_scale_dxs, -4650, 150, 1);
1751
1752 static struct snd_kcontrol_new snd_via8233_pcmdxs_volume_control __devinitdata = {
1753         .name = "PCM Playback Volume",
1754         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1755         .access = (SNDRV_CTL_ELEM_ACCESS_READWRITE |
1756                    SNDRV_CTL_ELEM_ACCESS_TLV_READ),
1757         .info = snd_via8233_dxs_volume_info,
1758         .get = snd_via8233_pcmdxs_volume_get,
1759         .put = snd_via8233_pcmdxs_volume_put,
1760         .tlv = { .p = db_scale_dxs }
1761 };
1762
1763 static struct snd_kcontrol_new snd_via8233_dxs_volume_control __devinitdata = {
1764         .iface = SNDRV_CTL_ELEM_IFACE_PCM,
1765         .device = 0,
1766         /* .subdevice set later */
1767         .name = "PCM Playback Volume",
1768         .access = SNDRV_CTL_ELEM_ACCESS_READWRITE |
1769                   SNDRV_CTL_ELEM_ACCESS_TLV_READ |
1770                   SNDRV_CTL_ELEM_ACCESS_INACTIVE,
1771         .info = snd_via8233_dxs_volume_info,
1772         .get = snd_via8233_dxs_volume_get,
1773         .put = snd_via8233_dxs_volume_put,
1774         .tlv = { .p = db_scale_dxs }
1775 };
1776
1777 /*
1778  */
1779
1780 static void snd_via82xx_mixer_free_ac97_bus(struct snd_ac97_bus *bus)
1781 {
1782         struct via82xx *chip = bus->private_data;
1783         chip->ac97_bus = NULL;
1784 }
1785
1786 static void snd_via82xx_mixer_free_ac97(struct snd_ac97 *ac97)
1787 {
1788         struct via82xx *chip = ac97->private_data;
1789         chip->ac97 = NULL;
1790 }
1791
1792 static struct ac97_quirk ac97_quirks[] = {
1793         {
1794                 .subvendor = 0x1106,
1795                 .subdevice = 0x4161,
1796                 .codec_id = 0x56494161, /* VT1612A */
1797                 .name = "Soltek SL-75DRV5",
1798                 .type = AC97_TUNE_NONE
1799         },
1800         {       /* FIXME: which codec? */
1801                 .subvendor = 0x1106,
1802                 .subdevice = 0x4161,
1803                 .name = "ASRock K7VT2",
1804                 .type = AC97_TUNE_HP_ONLY
1805         },
1806         {
1807                 .subvendor = 0x110a,
1808                 .subdevice = 0x0079,
1809                 .name = "Fujitsu Siemens D1289",
1810                 .type = AC97_TUNE_HP_ONLY
1811         },
1812         {
1813                 .subvendor = 0x1019,
1814                 .subdevice = 0x0a81,
1815                 .name = "ECS K7VTA3",
1816                 .type = AC97_TUNE_HP_ONLY
1817         },
1818         {
1819                 .subvendor = 0x1019,
1820                 .subdevice = 0x0a85,
1821                 .name = "ECS L7VMM2",
1822                 .type = AC97_TUNE_HP_ONLY
1823         },
1824         {
1825                 .subvendor = 0x1019,
1826                 .subdevice = 0x1841,
1827                 .name = "ECS K7VTA3",
1828                 .type = AC97_TUNE_HP_ONLY
1829         },
1830         {
1831                 .subvendor = 0x1849,
1832                 .subdevice = 0x3059,
1833                 .name = "ASRock K7VM2",
1834                 .type = AC97_TUNE_HP_ONLY       /* VT1616 */
1835         },
1836         {
1837                 .subvendor = 0x14cd,
1838                 .subdevice = 0x7002,
1839                 .name = "Unknown",
1840                 .type = AC97_TUNE_ALC_JACK
1841         },
1842         {
1843                 .subvendor = 0x1071,
1844                 .subdevice = 0x8590,
1845                 .name = "Mitac Mobo",
1846                 .type = AC97_TUNE_ALC_JACK
1847         },
1848         {
1849                 .subvendor = 0x161f,
1850                 .subdevice = 0x202b,
1851                 .name = "Arima Notebook",
1852                 .type = AC97_TUNE_HP_ONLY,
1853         },
1854         {
1855                 .subvendor = 0x161f,
1856                 .subdevice = 0x2032,
1857                 .name = "Targa Traveller 811",
1858                 .type = AC97_TUNE_HP_ONLY,
1859         },
1860         {
1861                 .subvendor = 0x161f,
1862                 .subdevice = 0x2032,
1863                 .name = "m680x",
1864                 .type = AC97_TUNE_HP_ONLY, /* http://launchpad.net/bugs/38546 */
1865         },
1866         {
1867                 .subvendor = 0x1297,
1868                 .subdevice = 0xa232,
1869                 .name = "Shuttle AK32VN",
1870                 .type = AC97_TUNE_HP_ONLY
1871         },
1872         { } /* terminator */
1873 };
1874
1875 static int __devinit snd_via82xx_mixer_new(struct via82xx *chip, const char *quirk_override)
1876 {
1877         struct snd_ac97_template ac97;
1878         int err;
1879         static struct snd_ac97_bus_ops ops = {
1880                 .write = snd_via82xx_codec_write,
1881                 .read = snd_via82xx_codec_read,
1882                 .wait = snd_via82xx_codec_wait,
1883         };
1884
1885         if ((err = snd_ac97_bus(chip->card, 0, &ops, chip, &chip->ac97_bus)) < 0)
1886                 return err;
1887         chip->ac97_bus->private_free = snd_via82xx_mixer_free_ac97_bus;
1888         chip->ac97_bus->clock = chip->ac97_clock;
1889
1890         memset(&ac97, 0, sizeof(ac97));
1891         ac97.private_data = chip;
1892         ac97.private_free = snd_via82xx_mixer_free_ac97;
1893         ac97.pci = chip->pci;
1894         ac97.scaps = AC97_SCAP_SKIP_MODEM | AC97_SCAP_POWER_SAVE;
1895         if ((err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97)) < 0)
1896                 return err;
1897
1898         snd_ac97_tune_hardware(chip->ac97, ac97_quirks, quirk_override);
1899
1900         if (chip->chip_type != TYPE_VIA686) {
1901                 /* use slot 10/11 */
1902                 snd_ac97_update_bits(chip->ac97, AC97_EXTENDED_STATUS, 0x03 << 4, 0x03 << 4);
1903         }
1904
1905         return 0;
1906 }
1907
1908 #ifdef SUPPORT_JOYSTICK
1909 #define JOYSTICK_ADDR   0x200
1910 static int __devinit snd_via686_create_gameport(struct via82xx *chip, unsigned char *legacy)
1911 {
1912         struct gameport *gp;
1913         struct resource *r;
1914
1915         if (!joystick)
1916                 return -ENODEV;
1917
1918         r = request_region(JOYSTICK_ADDR, 8, "VIA686 gameport");
1919         if (!r) {
1920                 printk(KERN_WARNING "via82xx: cannot reserve joystick port 0x%#x\n",
1921                        JOYSTICK_ADDR);
1922                 return -EBUSY;
1923         }
1924
1925         chip->gameport = gp = gameport_allocate_port();
1926         if (!gp) {
1927                 printk(KERN_ERR "via82xx: cannot allocate memory for gameport\n");
1928                 release_and_free_resource(r);
1929                 return -ENOMEM;
1930         }
1931
1932         gameport_set_name(gp, "VIA686 Gameport");
1933         gameport_set_phys(gp, "pci%s/gameport0", pci_name(chip->pci));
1934         gameport_set_dev_parent(gp, &chip->pci->dev);
1935         gp->io = JOYSTICK_ADDR;
1936         gameport_set_port_data(gp, r);
1937
1938         /* Enable legacy joystick port */
1939         *legacy |= VIA_FUNC_ENABLE_GAME;
1940         pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, *legacy);
1941
1942         gameport_register_port(chip->gameport);
1943
1944         return 0;
1945 }
1946
1947 static void snd_via686_free_gameport(struct via82xx *chip)
1948 {
1949         if (chip->gameport) {
1950                 struct resource *r = gameport_get_port_data(chip->gameport);
1951
1952                 gameport_unregister_port(chip->gameport);
1953                 chip->gameport = NULL;
1954                 release_and_free_resource(r);
1955         }
1956 }
1957 #else
1958 static inline int snd_via686_create_gameport(struct via82xx *chip, unsigned char *legacy)
1959 {
1960         return -ENOSYS;
1961 }
1962 static inline void snd_via686_free_gameport(struct via82xx *chip) { }
1963 #endif
1964
1965
1966 /*
1967  *
1968  */
1969
1970 static int __devinit snd_via8233_init_misc(struct via82xx *chip)
1971 {
1972         int i, err, caps;
1973         unsigned char val;
1974
1975         caps = chip->chip_type == TYPE_VIA8233A ? 1 : 2;
1976         for (i = 0; i < caps; i++) {
1977                 snd_via8233_capture_source.index = i;
1978                 err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_capture_source, chip));
1979                 if (err < 0)
1980                         return err;
1981         }
1982         if (ac97_can_spdif(chip->ac97)) {
1983                 err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_dxs3_spdif_control, chip));
1984                 if (err < 0)
1985                         return err;
1986         }
1987         if (chip->chip_type != TYPE_VIA8233A) {
1988                 /* when no h/w PCM volume control is found, use DXS volume control
1989                  * as the PCM vol control
1990                  */
1991                 struct snd_ctl_elem_id sid;
1992                 memset(&sid, 0, sizeof(sid));
1993                 strcpy(sid.name, "PCM Playback Volume");
1994                 sid.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
1995                 if (! snd_ctl_find_id(chip->card, &sid)) {
1996                         snd_printd(KERN_INFO "Using DXS as PCM Playback\n");
1997                         err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_pcmdxs_volume_control, chip));
1998                         if (err < 0)
1999                                 return err;
2000                 }
2001                 else /* Using DXS when PCM emulation is enabled is really weird */
2002                 {
2003                         for (i = 0; i < 4; ++i) {
2004                                 struct snd_kcontrol *kctl;
2005
2006                                 kctl = snd_ctl_new1(
2007                                         &snd_via8233_dxs_volume_control, chip);
2008                                 if (!kctl)
2009                                         return -ENOMEM;
2010                                 kctl->id.subdevice = i;
2011                                 err = snd_ctl_add(chip->card, kctl);
2012                                 if (err < 0)
2013                                         return err;
2014                                 chip->dxs_controls[i] = kctl;
2015                         }
2016                 }
2017         }
2018         /* select spdif data slot 10/11 */
2019         pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &val);
2020         val = (val & ~VIA8233_SPDIF_SLOT_MASK) | VIA8233_SPDIF_SLOT_1011;
2021         val &= ~VIA8233_SPDIF_DX3; /* SPDIF off as default */
2022         pci_write_config_byte(chip->pci, VIA8233_SPDIF_CTRL, val);
2023
2024         return 0;
2025 }
2026
2027 static int __devinit snd_via686_init_misc(struct via82xx *chip)
2028 {
2029         unsigned char legacy, legacy_cfg;
2030         int rev_h = 0;
2031
2032         legacy = chip->old_legacy;
2033         legacy_cfg = chip->old_legacy_cfg;
2034         legacy |= VIA_FUNC_MIDI_IRQMASK;        /* FIXME: correct? (disable MIDI) */
2035         legacy &= ~VIA_FUNC_ENABLE_GAME;        /* disable joystick */
2036         if (chip->revision >= VIA_REV_686_H) {
2037                 rev_h = 1;
2038                 if (mpu_port >= 0x200) {        /* force MIDI */
2039                         mpu_port &= 0xfffc;
2040                         pci_write_config_dword(chip->pci, 0x18, mpu_port | 0x01);
2041 #ifdef CONFIG_PM
2042                         chip->mpu_port_saved = mpu_port;
2043 #endif
2044                 } else {
2045                         mpu_port = pci_resource_start(chip->pci, 2);
2046                 }
2047         } else {
2048                 switch (mpu_port) {     /* force MIDI */
2049                 case 0x300:
2050                 case 0x310:
2051                 case 0x320:
2052                 case 0x330:
2053                         legacy_cfg &= ~(3 << 2);
2054                         legacy_cfg |= (mpu_port & 0x0030) >> 2;
2055                         break;
2056                 default:                        /* no, use BIOS settings */
2057                         if (legacy & VIA_FUNC_ENABLE_MIDI)
2058                                 mpu_port = 0x300 + ((legacy_cfg & 0x000c) << 2);
2059                         break;
2060                 }
2061         }
2062         if (mpu_port >= 0x200 &&
2063             (chip->mpu_res = request_region(mpu_port, 2, "VIA82xx MPU401"))
2064             != NULL) {
2065                 if (rev_h)
2066                         legacy |= VIA_FUNC_MIDI_PNP;    /* enable PCI I/O 2 */
2067                 legacy |= VIA_FUNC_ENABLE_MIDI;
2068         } else {
2069                 if (rev_h)
2070                         legacy &= ~VIA_FUNC_MIDI_PNP;   /* disable PCI I/O 2 */
2071                 legacy &= ~VIA_FUNC_ENABLE_MIDI;
2072                 mpu_port = 0;
2073         }
2074
2075         pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, legacy);
2076         pci_write_config_byte(chip->pci, VIA_PNP_CONTROL, legacy_cfg);
2077         if (chip->mpu_res) {
2078                 if (snd_mpu401_uart_new(chip->card, 0, MPU401_HW_VIA686A,
2079                                         mpu_port, MPU401_INFO_INTEGRATED |
2080                                         MPU401_INFO_IRQ_HOOK, -1,
2081                                         &chip->rmidi) < 0) {
2082                         printk(KERN_WARNING "unable to initialize MPU-401"
2083                                " at 0x%lx, skipping\n", mpu_port);
2084                         legacy &= ~VIA_FUNC_ENABLE_MIDI;
2085                 } else {
2086                         legacy &= ~VIA_FUNC_MIDI_IRQMASK;       /* enable MIDI interrupt */
2087                 }
2088                 pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, legacy);
2089         }
2090
2091         snd_via686_create_gameport(chip, &legacy);
2092
2093 #ifdef CONFIG_PM
2094         chip->legacy_saved = legacy;
2095         chip->legacy_cfg_saved = legacy_cfg;
2096 #endif
2097
2098         return 0;
2099 }
2100
2101
2102 /*
2103  * proc interface
2104  */
2105 static void snd_via82xx_proc_read(struct snd_info_entry *entry,
2106                                   struct snd_info_buffer *buffer)
2107 {
2108         struct via82xx *chip = entry->private_data;
2109         int i;
2110         
2111         snd_iprintf(buffer, "%s\n\n", chip->card->longname);
2112         for (i = 0; i < 0xa0; i += 4) {
2113                 snd_iprintf(buffer, "%02x: %08x\n", i, inl(chip->port + i));
2114         }
2115 }
2116
2117 static void __devinit snd_via82xx_proc_init(struct via82xx *chip)
2118 {
2119         struct snd_info_entry *entry;
2120
2121         if (! snd_card_proc_new(chip->card, "via82xx", &entry))
2122                 snd_info_set_text_ops(entry, chip, snd_via82xx_proc_read);
2123 }
2124
2125 /*
2126  *
2127  */
2128
2129 static int snd_via82xx_chip_init(struct via82xx *chip)
2130 {
2131         unsigned int val;
2132         unsigned long end_time;
2133         unsigned char pval;
2134
2135 #if 0 /* broken on K7M? */
2136         if (chip->chip_type == TYPE_VIA686)
2137                 /* disable all legacy ports */
2138                 pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, 0);
2139 #endif
2140         pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval);
2141         if (! (pval & VIA_ACLINK_C00_READY)) { /* codec not ready? */
2142                 /* deassert ACLink reset, force SYNC */
2143                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL,
2144                                       VIA_ACLINK_CTRL_ENABLE |
2145                                       VIA_ACLINK_CTRL_RESET |
2146                                       VIA_ACLINK_CTRL_SYNC);
2147                 udelay(100);
2148 #if 1 /* FIXME: should we do full reset here for all chip models? */
2149                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, 0x00);
2150                 udelay(100);
2151 #else
2152                 /* deassert ACLink reset, force SYNC (warm AC'97 reset) */
2153                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL,
2154                                       VIA_ACLINK_CTRL_RESET|VIA_ACLINK_CTRL_SYNC);
2155                 udelay(2);
2156 #endif
2157                 /* ACLink on, deassert ACLink reset, VSR, SGD data out */
2158                 /* note - FM data out has trouble with non VRA codecs !! */
2159                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT);
2160                 udelay(100);
2161         }
2162         
2163         /* Make sure VRA is enabled, in case we didn't do a
2164          * complete codec reset, above */
2165         pci_read_config_byte(chip->pci, VIA_ACLINK_CTRL, &pval);
2166         if ((pval & VIA_ACLINK_CTRL_INIT) != VIA_ACLINK_CTRL_INIT) {
2167                 /* ACLink on, deassert ACLink reset, VSR, SGD data out */
2168                 /* note - FM data out has trouble with non VRA codecs !! */
2169                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT);
2170                 udelay(100);
2171         }
2172
2173         /* wait until codec ready */
2174         end_time = jiffies + msecs_to_jiffies(750);
2175         do {
2176                 pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval);
2177                 if (pval & VIA_ACLINK_C00_READY) /* primary codec ready */
2178                         break;
2179                 schedule_timeout_uninterruptible(1);
2180         } while (time_before(jiffies, end_time));
2181
2182         if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY)
2183                 snd_printk(KERN_ERR "AC'97 codec is not ready [0x%x]\n", val);
2184
2185 #if 0 /* FIXME: we don't support the second codec yet so skip the detection now.. */
2186         snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ |
2187                                  VIA_REG_AC97_SECONDARY_VALID |
2188                                  (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT));
2189         end_time = jiffies + msecs_to_jiffies(750);
2190         snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ |
2191                                  VIA_REG_AC97_SECONDARY_VALID |
2192                                  (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT));
2193         do {
2194                 if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_SECONDARY_VALID) {
2195                         chip->ac97_secondary = 1;
2196                         goto __ac97_ok2;
2197                 }
2198                 schedule_timeout_uninterruptible(1);
2199         } while (time_before(jiffies, end_time));
2200         /* This is ok, the most of motherboards have only one codec */
2201
2202       __ac97_ok2:
2203 #endif
2204
2205         if (chip->chip_type == TYPE_VIA686) {
2206                 /* route FM trap to IRQ, disable FM trap */
2207                 pci_write_config_byte(chip->pci, VIA_FM_NMI_CTRL, 0);
2208                 /* disable all GPI interrupts */
2209                 outl(0, VIAREG(chip, GPI_INTR));
2210         }
2211
2212         if (chip->chip_type != TYPE_VIA686) {
2213                 /* Workaround for Award BIOS bug:
2214                  * DXS channels don't work properly with VRA if MC97 is disabled.
2215                  */
2216                 struct pci_dev *pci;
2217                 pci = pci_get_device(0x1106, 0x3068, NULL); /* MC97 */
2218                 if (pci) {
2219                         unsigned char data;
2220                         pci_read_config_byte(pci, 0x44, &data);
2221                         pci_write_config_byte(pci, 0x44, data | 0x40);
2222                         pci_dev_put(pci);
2223                 }
2224         }
2225
2226         if (chip->chip_type != TYPE_VIA8233A) {
2227                 int i, idx;
2228                 for (idx = 0; idx < 4; idx++) {
2229                         unsigned long port = chip->port + 0x10 * idx;
2230                         for (i = 0; i < 2; i++) {
2231                                 chip->playback_volume[idx][i]=chip->playback_volume_c[i];
2232                                 outb(chip->playback_volume_c[i],
2233                                      port + VIA_REG_OFS_PLAYBACK_VOLUME_L + i);
2234                         }
2235                 }
2236         }
2237
2238         return 0;
2239 }
2240
2241 #ifdef CONFIG_PM
2242 /*
2243  * power management
2244  */
2245 static int snd_via82xx_suspend(struct pci_dev *pci, pm_message_t state)
2246 {
2247         struct snd_card *card = pci_get_drvdata(pci);
2248         struct via82xx *chip = card->private_data;
2249         int i;
2250
2251         snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
2252         for (i = 0; i < 2; i++)
2253                 snd_pcm_suspend_all(chip->pcms[i]);
2254         for (i = 0; i < chip->num_devs; i++)
2255                 snd_via82xx_channel_reset(chip, &chip->devs[i]);
2256         synchronize_irq(chip->irq);
2257         snd_ac97_suspend(chip->ac97);
2258
2259         /* save misc values */
2260         if (chip->chip_type != TYPE_VIA686) {
2261                 pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &chip->spdif_ctrl_saved);
2262                 chip->capture_src_saved[0] = inb(chip->port + VIA_REG_CAPTURE_CHANNEL);
2263                 chip->capture_src_saved[1] = inb(chip->port + VIA_REG_CAPTURE_CHANNEL + 0x10);
2264         }
2265
2266         pci_disable_device(pci);
2267         pci_save_state(pci);
2268         pci_set_power_state(pci, pci_choose_state(pci, state));
2269         return 0;
2270 }
2271
2272 static int snd_via82xx_resume(struct pci_dev *pci)
2273 {
2274         struct snd_card *card = pci_get_drvdata(pci);
2275         struct via82xx *chip = card->private_data;
2276         int i;
2277
2278         pci_set_power_state(pci, PCI_D0);
2279         pci_restore_state(pci);
2280         if (pci_enable_device(pci) < 0) {
2281                 printk(KERN_ERR "via82xx: pci_enable_device failed, "
2282                        "disabling device\n");
2283                 snd_card_disconnect(card);
2284                 return -EIO;
2285         }
2286         pci_set_master(pci);
2287
2288         snd_via82xx_chip_init(chip);
2289
2290         if (chip->chip_type == TYPE_VIA686) {
2291                 if (chip->mpu_port_saved)
2292                         pci_write_config_dword(chip->pci, 0x18, chip->mpu_port_saved | 0x01);
2293                 pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, chip->legacy_saved);
2294                 pci_write_config_byte(chip->pci, VIA_PNP_CONTROL, chip->legacy_cfg_saved);
2295         } else {
2296                 pci_write_config_byte(chip->pci, VIA8233_SPDIF_CTRL, chip->spdif_ctrl_saved);
2297                 outb(chip->capture_src_saved[0], chip->port + VIA_REG_CAPTURE_CHANNEL);
2298                 outb(chip->capture_src_saved[1], chip->port + VIA_REG_CAPTURE_CHANNEL + 0x10);
2299         }
2300
2301         snd_ac97_resume(chip->ac97);
2302
2303         for (i = 0; i < chip->num_devs; i++)
2304                 snd_via82xx_channel_reset(chip, &chip->devs[i]);
2305
2306         snd_power_change_state(card, SNDRV_CTL_POWER_D0);
2307         return 0;
2308 }
2309 #endif /* CONFIG_PM */
2310
2311 static int snd_via82xx_free(struct via82xx *chip)
2312 {
2313         unsigned int i;
2314
2315         if (chip->irq < 0)
2316                 goto __end_hw;
2317         /* disable interrupts */
2318         for (i = 0; i < chip->num_devs; i++)
2319                 snd_via82xx_channel_reset(chip, &chip->devs[i]);
2320
2321         if (chip->irq >= 0)
2322                 free_irq(chip->irq, chip);
2323  __end_hw:
2324         release_and_free_resource(chip->mpu_res);
2325         pci_release_regions(chip->pci);
2326
2327         if (chip->chip_type == TYPE_VIA686) {
2328                 snd_via686_free_gameport(chip);
2329                 pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, chip->old_legacy);
2330                 pci_write_config_byte(chip->pci, VIA_PNP_CONTROL, chip->old_legacy_cfg);
2331         }
2332         pci_disable_device(chip->pci);
2333         kfree(chip);
2334         return 0;
2335 }
2336
2337 static int snd_via82xx_dev_free(struct snd_device *device)
2338 {
2339         struct via82xx *chip = device->device_data;
2340         return snd_via82xx_free(chip);
2341 }
2342
2343 static int __devinit snd_via82xx_create(struct snd_card *card,
2344                                         struct pci_dev *pci,
2345                                         int chip_type,
2346                                         int revision,
2347                                         unsigned int ac97_clock,
2348                                         struct via82xx ** r_via)
2349 {
2350         struct via82xx *chip;
2351         int err;
2352         static struct snd_device_ops ops = {
2353                 .dev_free =     snd_via82xx_dev_free,
2354         };
2355
2356         if ((err = pci_enable_device(pci)) < 0)
2357                 return err;
2358
2359         if ((chip = kzalloc(sizeof(*chip), GFP_KERNEL)) == NULL) {
2360                 pci_disable_device(pci);
2361                 return -ENOMEM;
2362         }
2363
2364         chip->chip_type = chip_type;
2365         chip->revision = revision;
2366
2367         spin_lock_init(&chip->reg_lock);
2368         spin_lock_init(&chip->rates[0].lock);
2369         spin_lock_init(&chip->rates[1].lock);
2370         chip->card = card;
2371         chip->pci = pci;
2372         chip->irq = -1;
2373
2374         pci_read_config_byte(pci, VIA_FUNC_ENABLE, &chip->old_legacy);
2375         pci_read_config_byte(pci, VIA_PNP_CONTROL, &chip->old_legacy_cfg);
2376         pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE,
2377                               chip->old_legacy & ~(VIA_FUNC_ENABLE_SB|VIA_FUNC_ENABLE_FM));
2378
2379         if ((err = pci_request_regions(pci, card->driver)) < 0) {
2380                 kfree(chip);
2381                 pci_disable_device(pci);
2382                 return err;
2383         }
2384         chip->port = pci_resource_start(pci, 0);
2385         if (request_irq(pci->irq,
2386                         chip_type == TYPE_VIA8233 ?
2387                         snd_via8233_interrupt : snd_via686_interrupt,
2388                         IRQF_SHARED,
2389                         KBUILD_MODNAME, chip)) {
2390                 snd_printk(KERN_ERR "unable to grab IRQ %d\n", pci->irq);
2391                 snd_via82xx_free(chip);
2392                 return -EBUSY;
2393         }
2394         chip->irq = pci->irq;
2395         if (ac97_clock >= 8000 && ac97_clock <= 48000)
2396                 chip->ac97_clock = ac97_clock;
2397         synchronize_irq(chip->irq);
2398
2399         if ((err = snd_via82xx_chip_init(chip)) < 0) {
2400                 snd_via82xx_free(chip);
2401                 return err;
2402         }
2403
2404         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
2405                 snd_via82xx_free(chip);
2406                 return err;
2407         }
2408
2409         /* The 8233 ac97 controller does not implement the master bit
2410          * in the pci command register. IMHO this is a violation of the PCI spec.
2411          * We call pci_set_master here because it does not hurt. */
2412         pci_set_master(pci);
2413
2414         snd_card_set_dev(card, &pci->dev);
2415
2416         *r_via = chip;
2417         return 0;
2418 }
2419
2420 struct via823x_info {
2421         int revision;
2422         char *name;
2423         int type;
2424 };
2425 static struct via823x_info via823x_cards[] __devinitdata = {
2426         { VIA_REV_PRE_8233, "VIA 8233-Pre", TYPE_VIA8233 },
2427         { VIA_REV_8233C, "VIA 8233C", TYPE_VIA8233 },
2428         { VIA_REV_8233, "VIA 8233", TYPE_VIA8233 },
2429         { VIA_REV_8233A, "VIA 8233A", TYPE_VIA8233A },
2430         { VIA_REV_8235, "VIA 8235", TYPE_VIA8233 },
2431         { VIA_REV_8237, "VIA 8237", TYPE_VIA8233 },
2432         { VIA_REV_8251, "VIA 8251", TYPE_VIA8233 },
2433 };
2434
2435 /*
2436  * auto detection of DXS channel supports.
2437  */
2438
2439 static struct snd_pci_quirk dxs_whitelist[] __devinitdata = {
2440         SND_PCI_QUIRK(0x1005, 0x4710, "Avance Logic Mobo", VIA_DXS_ENABLE),
2441         SND_PCI_QUIRK(0x1019, 0x0996, "ESC Mobo", VIA_DXS_48K),
2442         SND_PCI_QUIRK(0x1019, 0x0a81, "ECS K7VTA3 v8.0", VIA_DXS_NO_VRA),
2443         SND_PCI_QUIRK(0x1019, 0x0a85, "ECS L7VMM2", VIA_DXS_NO_VRA),
2444         SND_PCI_QUIRK_VENDOR(0x1019, "ESC K8", VIA_DXS_SRC),
2445         SND_PCI_QUIRK(0x1019, 0xaa01, "ESC K8T890-A", VIA_DXS_SRC),
2446         SND_PCI_QUIRK(0x1025, 0x0033, "Acer Inspire 1353LM", VIA_DXS_NO_VRA),
2447         SND_PCI_QUIRK(0x1025, 0x0046, "Acer Aspire 1524 WLMi", VIA_DXS_SRC),
2448         SND_PCI_QUIRK_VENDOR(0x1043, "ASUS A7/A8", VIA_DXS_NO_VRA),
2449         SND_PCI_QUIRK_VENDOR(0x1071, "Diverse Notebook", VIA_DXS_NO_VRA),
2450         SND_PCI_QUIRK(0x10cf, 0x118e, "FSC Laptop", VIA_DXS_ENABLE),
2451         SND_PCI_QUIRK_VENDOR(0x1106, "ASRock", VIA_DXS_SRC),
2452         SND_PCI_QUIRK(0x1297, 0xa231, "Shuttle AK31v2", VIA_DXS_SRC),
2453         SND_PCI_QUIRK(0x1297, 0xa232, "Shuttle", VIA_DXS_SRC),
2454         SND_PCI_QUIRK(0x1297, 0xc160, "Shuttle Sk41G", VIA_DXS_SRC),
2455         SND_PCI_QUIRK(0x1458, 0xa002, "Gigabyte GA-7VAXP", VIA_DXS_ENABLE),
2456         SND_PCI_QUIRK(0x1462, 0x3800, "MSI KT266", VIA_DXS_ENABLE),
2457         SND_PCI_QUIRK(0x1462, 0x7120, "MSI KT4V", VIA_DXS_ENABLE),
2458         SND_PCI_QUIRK(0x1462, 0x7142, "MSI K8MM-V", VIA_DXS_ENABLE),
2459         SND_PCI_QUIRK_VENDOR(0x1462, "MSI Mobo", VIA_DXS_SRC),
2460         SND_PCI_QUIRK(0x147b, 0x1401, "ABIT KD7(-RAID)", VIA_DXS_ENABLE),
2461         SND_PCI_QUIRK(0x147b, 0x1411, "ABIT VA-20", VIA_DXS_ENABLE),
2462         SND_PCI_QUIRK(0x147b, 0x1413, "ABIT KV8 Pro", VIA_DXS_ENABLE),
2463         SND_PCI_QUIRK(0x147b, 0x1415, "ABIT AV8", VIA_DXS_NO_VRA),
2464         SND_PCI_QUIRK(0x14ff, 0x0403, "Twinhead mobo", VIA_DXS_ENABLE),
2465         SND_PCI_QUIRK(0x14ff, 0x0408, "Twinhead laptop", VIA_DXS_SRC),
2466         SND_PCI_QUIRK(0x1558, 0x4701, "Clevo D470", VIA_DXS_SRC),
2467         SND_PCI_QUIRK(0x1584, 0x8120, "Diverse Laptop", VIA_DXS_ENABLE),
2468         SND_PCI_QUIRK(0x1584, 0x8123, "Targa/Uniwill", VIA_DXS_NO_VRA),
2469         SND_PCI_QUIRK(0x161f, 0x202b, "Amira Notebook", VIA_DXS_NO_VRA),
2470         SND_PCI_QUIRK(0x161f, 0x2032, "m680x machines", VIA_DXS_48K),
2471         SND_PCI_QUIRK(0x1631, 0xe004, "PB EasyNote 3174", VIA_DXS_ENABLE),
2472         SND_PCI_QUIRK(0x1695, 0x3005, "EPoX EP-8K9A", VIA_DXS_ENABLE),
2473         SND_PCI_QUIRK_VENDOR(0x1695, "EPoX mobo", VIA_DXS_SRC),
2474         SND_PCI_QUIRK_VENDOR(0x16f3, "Jetway K8", VIA_DXS_SRC),
2475         SND_PCI_QUIRK_VENDOR(0x1734, "FSC Laptop", VIA_DXS_SRC),
2476         SND_PCI_QUIRK(0x1849, 0x3059, "ASRock K7VM2", VIA_DXS_NO_VRA),
2477         SND_PCI_QUIRK_VENDOR(0x1849, "ASRock mobo", VIA_DXS_SRC),
2478         SND_PCI_QUIRK(0x1919, 0x200a, "Soltek SL-K8",  VIA_DXS_NO_VRA),
2479         SND_PCI_QUIRK(0x4005, 0x4710, "MSI K7T266", VIA_DXS_SRC),
2480         { } /* terminator */
2481 };
2482
2483 static int __devinit check_dxs_list(struct pci_dev *pci, int revision)
2484 {
2485         const struct snd_pci_quirk *w;
2486
2487         w = snd_pci_quirk_lookup(pci, dxs_whitelist);
2488         if (w) {
2489                 snd_printdd(KERN_INFO "via82xx: DXS white list for %s found\n",
2490                             w->name);
2491                 return w->value;
2492         }
2493
2494         /* for newer revision, default to DXS_SRC */
2495         if (revision >= VIA_REV_8235)
2496                 return VIA_DXS_SRC;
2497
2498         /*
2499          * not detected, try 48k rate only to be sure.
2500          */
2501         printk(KERN_INFO "via82xx: Assuming DXS channels with 48k fixed sample rate.\n");
2502         printk(KERN_INFO "         Please try dxs_support=5 option\n");
2503         printk(KERN_INFO "         and report if it works on your machine.\n");
2504         printk(KERN_INFO "         For more details, read ALSA-Configuration.txt.\n");
2505         return VIA_DXS_48K;
2506 };
2507
2508 static int __devinit snd_via82xx_probe(struct pci_dev *pci,
2509                                        const struct pci_device_id *pci_id)
2510 {
2511         struct snd_card *card;
2512         struct via82xx *chip;
2513         int chip_type = 0, card_type;
2514         unsigned int i;
2515         int err;
2516
2517         err = snd_card_create(index, id, THIS_MODULE, 0, &card);
2518         if (err < 0)
2519                 return err;
2520
2521         card_type = pci_id->driver_data;
2522         switch (card_type) {
2523         case TYPE_CARD_VIA686:
2524                 strcpy(card->driver, "VIA686A");
2525                 sprintf(card->shortname, "VIA 82C686A/B rev%x", pci->revision);
2526                 chip_type = TYPE_VIA686;
2527                 break;
2528         case TYPE_CARD_VIA8233:
2529                 chip_type = TYPE_VIA8233;
2530                 sprintf(card->shortname, "VIA 823x rev%x", pci->revision);
2531                 for (i = 0; i < ARRAY_SIZE(via823x_cards); i++) {
2532                         if (pci->revision == via823x_cards[i].revision) {
2533                                 chip_type = via823x_cards[i].type;
2534                                 strcpy(card->shortname, via823x_cards[i].name);
2535                                 break;
2536                         }
2537                 }
2538                 if (chip_type != TYPE_VIA8233A) {
2539                         if (dxs_support == VIA_DXS_AUTO)
2540                                 dxs_support = check_dxs_list(pci, pci->revision);
2541                         /* force to use VIA8233 or 8233A model according to
2542                          * dxs_support module option
2543                          */
2544                         if (dxs_support == VIA_DXS_DISABLE)
2545                                 chip_type = TYPE_VIA8233A;
2546                         else
2547                                 chip_type = TYPE_VIA8233;
2548                 }
2549                 if (chip_type == TYPE_VIA8233A)
2550                         strcpy(card->driver, "VIA8233A");
2551                 else if (pci->revision >= VIA_REV_8237)
2552                         strcpy(card->driver, "VIA8237"); /* no slog assignment */
2553                 else
2554                         strcpy(card->driver, "VIA8233");
2555                 break;
2556         default:
2557                 snd_printk(KERN_ERR "invalid card type %d\n", card_type);
2558                 err = -EINVAL;
2559                 goto __error;
2560         }
2561                 
2562         if ((err = snd_via82xx_create(card, pci, chip_type, pci->revision,
2563                                       ac97_clock, &chip)) < 0)
2564                 goto __error;
2565         card->private_data = chip;
2566         if ((err = snd_via82xx_mixer_new(chip, ac97_quirk)) < 0)
2567                 goto __error;
2568
2569         if (chip_type == TYPE_VIA686) {
2570                 if ((err = snd_via686_pcm_new(chip)) < 0 ||
2571                     (err = snd_via686_init_misc(chip)) < 0)
2572                         goto __error;
2573         } else {
2574                 if (chip_type == TYPE_VIA8233A) {
2575                         if ((err = snd_via8233a_pcm_new(chip)) < 0)
2576                                 goto __error;
2577                         // chip->dxs_fixed = 1; /* FIXME: use 48k for DXS #3? */
2578                 } else {
2579                         if ((err = snd_via8233_pcm_new(chip)) < 0)
2580                                 goto __error;
2581                         if (dxs_support == VIA_DXS_48K)
2582                                 chip->dxs_fixed = 1;
2583                         else if (dxs_support == VIA_DXS_NO_VRA)
2584                                 chip->no_vra = 1;
2585                         else if (dxs_support == VIA_DXS_SRC) {
2586                                 chip->no_vra = 1;
2587                                 chip->dxs_src = 1;
2588                         }
2589                 }
2590                 if ((err = snd_via8233_init_misc(chip)) < 0)
2591                         goto __error;
2592         }
2593
2594         /* disable interrupts */
2595         for (i = 0; i < chip->num_devs; i++)
2596                 snd_via82xx_channel_reset(chip, &chip->devs[i]);
2597
2598         snprintf(card->longname, sizeof(card->longname),
2599                  "%s with %s at %#lx, irq %d", card->shortname,
2600                  snd_ac97_get_short_name(chip->ac97), chip->port, chip->irq);
2601
2602         snd_via82xx_proc_init(chip);
2603
2604         if ((err = snd_card_register(card)) < 0) {
2605                 snd_card_free(card);
2606                 return err;
2607         }
2608         pci_set_drvdata(pci, card);
2609         return 0;
2610
2611  __error:
2612         snd_card_free(card);
2613         return err;
2614 }
2615
2616 static void __devexit snd_via82xx_remove(struct pci_dev *pci)
2617 {
2618         snd_card_free(pci_get_drvdata(pci));
2619         pci_set_drvdata(pci, NULL);
2620 }
2621
2622 static struct pci_driver driver = {
2623         .name = KBUILD_MODNAME,
2624         .id_table = snd_via82xx_ids,
2625         .probe = snd_via82xx_probe,
2626         .remove = __devexit_p(snd_via82xx_remove),
2627 #ifdef CONFIG_PM
2628         .suspend = snd_via82xx_suspend,
2629         .resume = snd_via82xx_resume,
2630 #endif
2631 };
2632
2633 static int __init alsa_card_via82xx_init(void)
2634 {
2635         return pci_register_driver(&driver);
2636 }
2637
2638 static void __exit alsa_card_via82xx_exit(void)
2639 {
2640         pci_unregister_driver(&driver);
2641 }
2642
2643 module_init(alsa_card_via82xx_init)
2644 module_exit(alsa_card_via82xx_exit)