c8fb51885b6d25b65e0c295e7a8352fb79df2176
[muen/linux.git] / sound / pci / via82xx.c
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3  *   ALSA driver for VIA VT82xx (South Bridge)
4  *
5  *   VT82C686A/B/C, VT8233A/C, VT8235
6  *
7  *      Copyright (c) 2000 Jaroslav Kysela <perex@perex.cz>
8  *                         Tjeerd.Mulder <Tjeerd.Mulder@fujitsu-siemens.com>
9  *                    2002 Takashi Iwai <tiwai@suse.de>
10  */
11
12 /*
13  * Changes:
14  *
15  * Dec. 19, 2002        Takashi Iwai <tiwai@suse.de>
16  *      - use the DSX channels for the first pcm playback.
17  *        (on VIA8233, 8233C and 8235 only)
18  *        this will allow you play simultaneously up to 4 streams.
19  *        multi-channel playback is assigned to the second device
20  *        on these chips.
21  *      - support the secondary capture (on VIA8233/C,8235)
22  *      - SPDIF support
23  *        the DSX3 channel can be used for SPDIF output.
24  *        on VIA8233A, this channel is assigned to the second pcm
25  *        playback.
26  *        the card config of alsa-lib will assign the correct
27  *        device for applications.
28  *      - clean up the code, separate low-level initialization
29  *        routines for each chipset.
30  *
31  * Sep. 26, 2005        Karsten Wiese <annabellesgarden@yahoo.de>
32  *      - Optimize position calculation for the 823x chips. 
33  */
34
35 #include <linux/io.h>
36 #include <linux/delay.h>
37 #include <linux/interrupt.h>
38 #include <linux/init.h>
39 #include <linux/pci.h>
40 #include <linux/slab.h>
41 #include <linux/gameport.h>
42 #include <linux/module.h>
43 #include <sound/core.h>
44 #include <sound/pcm.h>
45 #include <sound/pcm_params.h>
46 #include <sound/info.h>
47 #include <sound/tlv.h>
48 #include <sound/ac97_codec.h>
49 #include <sound/mpu401.h>
50 #include <sound/initval.h>
51
52 #if 0
53 #define POINTER_DEBUG
54 #endif
55
56 MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
57 MODULE_DESCRIPTION("VIA VT82xx audio");
58 MODULE_LICENSE("GPL");
59 MODULE_SUPPORTED_DEVICE("{{VIA,VT82C686A/B/C,pci},{VIA,VT8233A/C,8235}}");
60
61 #if IS_REACHABLE(CONFIG_GAMEPORT)
62 #define SUPPORT_JOYSTICK 1
63 #endif
64
65 static int index = SNDRV_DEFAULT_IDX1;  /* Index 0-MAX */
66 static char *id = SNDRV_DEFAULT_STR1;   /* ID for this card */
67 static long mpu_port;
68 #ifdef SUPPORT_JOYSTICK
69 static bool joystick;
70 #endif
71 static int ac97_clock = 48000;
72 static char *ac97_quirk;
73 static int dxs_support;
74 static int dxs_init_volume = 31;
75 static int nodelay;
76
77 module_param(index, int, 0444);
78 MODULE_PARM_DESC(index, "Index value for VIA 82xx bridge.");
79 module_param(id, charp, 0444);
80 MODULE_PARM_DESC(id, "ID string for VIA 82xx bridge.");
81 module_param_hw(mpu_port, long, ioport, 0444);
82 MODULE_PARM_DESC(mpu_port, "MPU-401 port. (VT82C686x only)");
83 #ifdef SUPPORT_JOYSTICK
84 module_param(joystick, bool, 0444);
85 MODULE_PARM_DESC(joystick, "Enable joystick. (VT82C686x only)");
86 #endif
87 module_param(ac97_clock, int, 0444);
88 MODULE_PARM_DESC(ac97_clock, "AC'97 codec clock (default 48000Hz).");
89 module_param(ac97_quirk, charp, 0444);
90 MODULE_PARM_DESC(ac97_quirk, "AC'97 workaround for strange hardware.");
91 module_param(dxs_support, int, 0444);
92 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)");
93 module_param(dxs_init_volume, int, 0644);
94 MODULE_PARM_DESC(dxs_init_volume, "initial DXS volume (0-31)");
95 module_param(nodelay, int, 0444);
96 MODULE_PARM_DESC(nodelay, "Disable 500ms init delay");
97
98 /* just for backward compatibility */
99 static bool enable;
100 module_param(enable, bool, 0444);
101
102
103 /* revision numbers for via686 */
104 #define VIA_REV_686_A           0x10
105 #define VIA_REV_686_B           0x11
106 #define VIA_REV_686_C           0x12
107 #define VIA_REV_686_D           0x13
108 #define VIA_REV_686_E           0x14
109 #define VIA_REV_686_H           0x20
110
111 /* revision numbers for via8233 */
112 #define VIA_REV_PRE_8233        0x10    /* not in market */
113 #define VIA_REV_8233C           0x20    /* 2 rec, 4 pb, 1 multi-pb */
114 #define VIA_REV_8233            0x30    /* 2 rec, 4 pb, 1 multi-pb, spdif */
115 #define VIA_REV_8233A           0x40    /* 1 rec, 1 multi-pb, spdf */
116 #define VIA_REV_8235            0x50    /* 2 rec, 4 pb, 1 multi-pb, spdif */
117 #define VIA_REV_8237            0x60
118 #define VIA_REV_8251            0x70
119
120 /*
121  *  Direct registers
122  */
123
124 #define VIAREG(via, x) ((via)->port + VIA_REG_##x)
125 #define VIADEV_REG(viadev, x) ((viadev)->port + VIA_REG_##x)
126
127 /* common offsets */
128 #define VIA_REG_OFFSET_STATUS           0x00    /* byte - channel status */
129 #define   VIA_REG_STAT_ACTIVE           0x80    /* RO */
130 #define   VIA8233_SHADOW_STAT_ACTIVE    0x08    /* RO */
131 #define   VIA_REG_STAT_PAUSED           0x40    /* RO */
132 #define   VIA_REG_STAT_TRIGGER_QUEUED   0x08    /* RO */
133 #define   VIA_REG_STAT_STOPPED          0x04    /* RWC */
134 #define   VIA_REG_STAT_EOL              0x02    /* RWC */
135 #define   VIA_REG_STAT_FLAG             0x01    /* RWC */
136 #define VIA_REG_OFFSET_CONTROL          0x01    /* byte - channel control */
137 #define   VIA_REG_CTRL_START            0x80    /* WO */
138 #define   VIA_REG_CTRL_TERMINATE        0x40    /* WO */
139 #define   VIA_REG_CTRL_AUTOSTART        0x20
140 #define   VIA_REG_CTRL_PAUSE            0x08    /* RW */
141 #define   VIA_REG_CTRL_INT_STOP         0x04            
142 #define   VIA_REG_CTRL_INT_EOL          0x02
143 #define   VIA_REG_CTRL_INT_FLAG         0x01
144 #define   VIA_REG_CTRL_RESET            0x01    /* RW - probably reset? undocumented */
145 #define   VIA_REG_CTRL_INT (VIA_REG_CTRL_INT_FLAG | VIA_REG_CTRL_INT_EOL | VIA_REG_CTRL_AUTOSTART)
146 #define VIA_REG_OFFSET_TYPE             0x02    /* byte - channel type (686 only) */
147 #define   VIA_REG_TYPE_AUTOSTART        0x80    /* RW - autostart at EOL */
148 #define   VIA_REG_TYPE_16BIT            0x20    /* RW */
149 #define   VIA_REG_TYPE_STEREO           0x10    /* RW */
150 #define   VIA_REG_TYPE_INT_LLINE        0x00
151 #define   VIA_REG_TYPE_INT_LSAMPLE      0x04
152 #define   VIA_REG_TYPE_INT_LESSONE      0x08
153 #define   VIA_REG_TYPE_INT_MASK         0x0c
154 #define   VIA_REG_TYPE_INT_EOL          0x02
155 #define   VIA_REG_TYPE_INT_FLAG         0x01
156 #define VIA_REG_OFFSET_TABLE_PTR        0x04    /* dword - channel table pointer */
157 #define VIA_REG_OFFSET_CURR_PTR         0x04    /* dword - channel current pointer */
158 #define VIA_REG_OFFSET_STOP_IDX         0x08    /* dword - stop index, channel type, sample rate */
159 #define   VIA8233_REG_TYPE_16BIT        0x00200000      /* RW */
160 #define   VIA8233_REG_TYPE_STEREO       0x00100000      /* RW */
161 #define VIA_REG_OFFSET_CURR_COUNT       0x0c    /* dword - channel current count (24 bit) */
162 #define VIA_REG_OFFSET_CURR_INDEX       0x0f    /* byte - channel current index (for via8233 only) */
163
164 #define DEFINE_VIA_REGSET(name,val) \
165 enum {\
166         VIA_REG_##name##_STATUS         = (val),\
167         VIA_REG_##name##_CONTROL        = (val) + 0x01,\
168         VIA_REG_##name##_TYPE           = (val) + 0x02,\
169         VIA_REG_##name##_TABLE_PTR      = (val) + 0x04,\
170         VIA_REG_##name##_CURR_PTR       = (val) + 0x04,\
171         VIA_REG_##name##_STOP_IDX       = (val) + 0x08,\
172         VIA_REG_##name##_CURR_COUNT     = (val) + 0x0c,\
173 }
174
175 /* playback block */
176 DEFINE_VIA_REGSET(PLAYBACK, 0x00);
177 DEFINE_VIA_REGSET(CAPTURE, 0x10);
178 DEFINE_VIA_REGSET(FM, 0x20);
179
180 /* AC'97 */
181 #define VIA_REG_AC97                    0x80    /* dword */
182 #define   VIA_REG_AC97_CODEC_ID_MASK    (3<<30)
183 #define   VIA_REG_AC97_CODEC_ID_SHIFT   30
184 #define   VIA_REG_AC97_CODEC_ID_PRIMARY 0x00
185 #define   VIA_REG_AC97_CODEC_ID_SECONDARY 0x01
186 #define   VIA_REG_AC97_SECONDARY_VALID  (1<<27)
187 #define   VIA_REG_AC97_PRIMARY_VALID    (1<<25)
188 #define   VIA_REG_AC97_BUSY             (1<<24)
189 #define   VIA_REG_AC97_READ             (1<<23)
190 #define   VIA_REG_AC97_CMD_SHIFT        16
191 #define   VIA_REG_AC97_CMD_MASK         0x7e
192 #define   VIA_REG_AC97_DATA_SHIFT       0
193 #define   VIA_REG_AC97_DATA_MASK        0xffff
194
195 #define VIA_REG_SGD_SHADOW              0x84    /* dword */
196 /* via686 */
197 #define   VIA_REG_SGD_STAT_PB_FLAG      (1<<0)
198 #define   VIA_REG_SGD_STAT_CP_FLAG      (1<<1)
199 #define   VIA_REG_SGD_STAT_FM_FLAG      (1<<2)
200 #define   VIA_REG_SGD_STAT_PB_EOL       (1<<4)
201 #define   VIA_REG_SGD_STAT_CP_EOL       (1<<5)
202 #define   VIA_REG_SGD_STAT_FM_EOL       (1<<6)
203 #define   VIA_REG_SGD_STAT_PB_STOP      (1<<8)
204 #define   VIA_REG_SGD_STAT_CP_STOP      (1<<9)
205 #define   VIA_REG_SGD_STAT_FM_STOP      (1<<10)
206 #define   VIA_REG_SGD_STAT_PB_ACTIVE    (1<<12)
207 #define   VIA_REG_SGD_STAT_CP_ACTIVE    (1<<13)
208 #define   VIA_REG_SGD_STAT_FM_ACTIVE    (1<<14)
209 /* via8233 */
210 #define   VIA8233_REG_SGD_STAT_FLAG     (1<<0)
211 #define   VIA8233_REG_SGD_STAT_EOL      (1<<1)
212 #define   VIA8233_REG_SGD_STAT_STOP     (1<<2)
213 #define   VIA8233_REG_SGD_STAT_ACTIVE   (1<<3)
214 #define VIA8233_INTR_MASK(chan) ((VIA8233_REG_SGD_STAT_FLAG|VIA8233_REG_SGD_STAT_EOL) << ((chan) * 4))
215 #define   VIA8233_REG_SGD_CHAN_SDX      0
216 #define   VIA8233_REG_SGD_CHAN_MULTI    4
217 #define   VIA8233_REG_SGD_CHAN_REC      6
218 #define   VIA8233_REG_SGD_CHAN_REC1     7
219
220 #define VIA_REG_GPI_STATUS              0x88
221 #define VIA_REG_GPI_INTR                0x8c
222
223 /* multi-channel and capture registers for via8233 */
224 DEFINE_VIA_REGSET(MULTPLAY, 0x40);
225 DEFINE_VIA_REGSET(CAPTURE_8233, 0x60);
226
227 /* via8233-specific registers */
228 #define VIA_REG_OFS_PLAYBACK_VOLUME_L   0x02    /* byte */
229 #define VIA_REG_OFS_PLAYBACK_VOLUME_R   0x03    /* byte */
230 #define VIA_REG_OFS_MULTPLAY_FORMAT     0x02    /* byte - format and channels */
231 #define   VIA_REG_MULTPLAY_FMT_8BIT     0x00
232 #define   VIA_REG_MULTPLAY_FMT_16BIT    0x80
233 #define   VIA_REG_MULTPLAY_FMT_CH_MASK  0x70    /* # channels << 4 (valid = 1,2,4,6) */
234 #define VIA_REG_OFS_CAPTURE_FIFO        0x02    /* byte - bit 6 = fifo  enable */
235 #define   VIA_REG_CAPTURE_FIFO_ENABLE   0x40
236
237 #define VIA_DXS_MAX_VOLUME              31      /* max. volume (attenuation) of reg 0x32/33 */
238
239 #define VIA_REG_CAPTURE_CHANNEL         0x63    /* byte - input select */
240 #define   VIA_REG_CAPTURE_CHANNEL_MIC   0x4
241 #define   VIA_REG_CAPTURE_CHANNEL_LINE  0
242 #define   VIA_REG_CAPTURE_SELECT_CODEC  0x03    /* recording source codec (0 = primary) */
243
244 #define VIA_TBL_BIT_FLAG        0x40000000
245 #define VIA_TBL_BIT_EOL         0x80000000
246
247 /* pci space */
248 #define VIA_ACLINK_STAT         0x40
249 #define  VIA_ACLINK_C11_READY   0x20
250 #define  VIA_ACLINK_C10_READY   0x10
251 #define  VIA_ACLINK_C01_READY   0x04 /* secondary codec ready */
252 #define  VIA_ACLINK_LOWPOWER    0x02 /* low-power state */
253 #define  VIA_ACLINK_C00_READY   0x01 /* primary codec ready */
254 #define VIA_ACLINK_CTRL         0x41
255 #define  VIA_ACLINK_CTRL_ENABLE 0x80 /* 0: disable, 1: enable */
256 #define  VIA_ACLINK_CTRL_RESET  0x40 /* 0: assert, 1: de-assert */
257 #define  VIA_ACLINK_CTRL_SYNC   0x20 /* 0: release SYNC, 1: force SYNC hi */
258 #define  VIA_ACLINK_CTRL_SDO    0x10 /* 0: release SDO, 1: force SDO hi */
259 #define  VIA_ACLINK_CTRL_VRA    0x08 /* 0: disable VRA, 1: enable VRA */
260 #define  VIA_ACLINK_CTRL_PCM    0x04 /* 0: disable PCM, 1: enable PCM */
261 #define  VIA_ACLINK_CTRL_FM     0x02 /* via686 only */
262 #define  VIA_ACLINK_CTRL_SB     0x01 /* via686 only */
263 #define  VIA_ACLINK_CTRL_INIT   (VIA_ACLINK_CTRL_ENABLE|\
264                                  VIA_ACLINK_CTRL_RESET|\
265                                  VIA_ACLINK_CTRL_PCM|\
266                                  VIA_ACLINK_CTRL_VRA)
267 #define VIA_FUNC_ENABLE         0x42
268 #define  VIA_FUNC_MIDI_PNP      0x80 /* FIXME: it's 0x40 in the datasheet! */
269 #define  VIA_FUNC_MIDI_IRQMASK  0x40 /* FIXME: not documented! */
270 #define  VIA_FUNC_RX2C_WRITE    0x20
271 #define  VIA_FUNC_SB_FIFO_EMPTY 0x10
272 #define  VIA_FUNC_ENABLE_GAME   0x08
273 #define  VIA_FUNC_ENABLE_FM     0x04
274 #define  VIA_FUNC_ENABLE_MIDI   0x02
275 #define  VIA_FUNC_ENABLE_SB     0x01
276 #define VIA_PNP_CONTROL         0x43
277 #define VIA_FM_NMI_CTRL         0x48
278 #define VIA8233_VOLCHG_CTRL     0x48
279 #define VIA8233_SPDIF_CTRL      0x49
280 #define  VIA8233_SPDIF_DX3      0x08
281 #define  VIA8233_SPDIF_SLOT_MASK        0x03
282 #define  VIA8233_SPDIF_SLOT_1011        0x00
283 #define  VIA8233_SPDIF_SLOT_34          0x01
284 #define  VIA8233_SPDIF_SLOT_78          0x02
285 #define  VIA8233_SPDIF_SLOT_69          0x03
286
287 /*
288  */
289
290 #define VIA_DXS_AUTO    0
291 #define VIA_DXS_ENABLE  1
292 #define VIA_DXS_DISABLE 2
293 #define VIA_DXS_48K     3
294 #define VIA_DXS_NO_VRA  4
295 #define VIA_DXS_SRC     5
296
297
298 /*
299  * pcm stream
300  */
301
302 struct snd_via_sg_table {
303         unsigned int offset;
304         unsigned int size;
305 } ;
306
307 #define VIA_TABLE_SIZE  255
308 #define VIA_MAX_BUFSIZE (1<<24)
309
310 struct viadev {
311         unsigned int reg_offset;
312         unsigned long port;
313         int direction;  /* playback = 0, capture = 1 */
314         struct snd_pcm_substream *substream;
315         int running;
316         unsigned int tbl_entries; /* # descriptors */
317         struct snd_dma_buffer table;
318         struct snd_via_sg_table *idx_table;
319         /* for recovery from the unexpected pointer */
320         unsigned int lastpos;
321         unsigned int fragsize;
322         unsigned int bufsize;
323         unsigned int bufsize2;
324         int hwptr_done;         /* processed frame position in the buffer */
325         int in_interrupt;
326         int shadow_shift;
327 };
328
329
330 enum { TYPE_CARD_VIA686 = 1, TYPE_CARD_VIA8233 };
331 enum { TYPE_VIA686, TYPE_VIA8233, TYPE_VIA8233A };
332
333 #define VIA_MAX_DEVS    7       /* 4 playback, 1 multi, 2 capture */
334
335 struct via_rate_lock {
336         spinlock_t lock;
337         int rate;
338         int used;
339 };
340
341 struct via82xx {
342         int irq;
343
344         unsigned long port;
345         struct resource *mpu_res;
346         int chip_type;
347         unsigned char revision;
348
349         unsigned char old_legacy;
350         unsigned char old_legacy_cfg;
351 #ifdef CONFIG_PM_SLEEP
352         unsigned char legacy_saved;
353         unsigned char legacy_cfg_saved;
354         unsigned char spdif_ctrl_saved;
355         unsigned char capture_src_saved[2];
356         unsigned int mpu_port_saved;
357 #endif
358
359         unsigned char playback_volume[4][2]; /* for VIA8233/C/8235; default = 0 */
360         unsigned char playback_volume_c[2]; /* for VIA8233/C/8235; default = 0 */
361
362         unsigned int intr_mask; /* SGD_SHADOW mask to check interrupts */
363
364         struct pci_dev *pci;
365         struct snd_card *card;
366
367         unsigned int num_devs;
368         unsigned int playback_devno, multi_devno, capture_devno;
369         struct viadev devs[VIA_MAX_DEVS];
370         struct via_rate_lock rates[2]; /* playback and capture */
371         unsigned int dxs_fixed: 1;      /* DXS channel accepts only 48kHz */
372         unsigned int no_vra: 1;         /* no need to set VRA on DXS channels */
373         unsigned int dxs_src: 1;        /* use full SRC capabilities of DXS */
374         unsigned int spdif_on: 1;       /* only spdif rates work to external DACs */
375
376         struct snd_pcm *pcms[2];
377         struct snd_rawmidi *rmidi;
378         struct snd_kcontrol *dxs_controls[4];
379
380         struct snd_ac97_bus *ac97_bus;
381         struct snd_ac97 *ac97;
382         unsigned int ac97_clock;
383         unsigned int ac97_secondary;    /* secondary AC'97 codec is present */
384
385         spinlock_t reg_lock;
386         struct snd_info_entry *proc_entry;
387
388 #ifdef SUPPORT_JOYSTICK
389         struct gameport *gameport;
390 #endif
391 };
392
393 static const struct pci_device_id snd_via82xx_ids[] = {
394         /* 0x1106, 0x3058 */
395         { PCI_VDEVICE(VIA, PCI_DEVICE_ID_VIA_82C686_5), TYPE_CARD_VIA686, },    /* 686A */
396         /* 0x1106, 0x3059 */
397         { PCI_VDEVICE(VIA, PCI_DEVICE_ID_VIA_8233_5), TYPE_CARD_VIA8233, },     /* VT8233 */
398         { 0, }
399 };
400
401 MODULE_DEVICE_TABLE(pci, snd_via82xx_ids);
402
403 /*
404  */
405
406 /*
407  * allocate and initialize the descriptor buffers
408  * periods = number of periods
409  * fragsize = period size in bytes
410  */
411 static int build_via_table(struct viadev *dev, struct snd_pcm_substream *substream,
412                            struct pci_dev *pci,
413                            unsigned int periods, unsigned int fragsize)
414 {
415         unsigned int i, idx, ofs, rest;
416         struct via82xx *chip = snd_pcm_substream_chip(substream);
417
418         if (dev->table.area == NULL) {
419                 /* the start of each lists must be aligned to 8 bytes,
420                  * but the kernel pages are much bigger, so we don't care
421                  */
422                 if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, &chip->pci->dev,
423                                         PAGE_ALIGN(VIA_TABLE_SIZE * 2 * 8),
424                                         &dev->table) < 0)
425                         return -ENOMEM;
426         }
427         if (! dev->idx_table) {
428                 dev->idx_table = kmalloc_array(VIA_TABLE_SIZE,
429                                                sizeof(*dev->idx_table),
430                                                GFP_KERNEL);
431                 if (! dev->idx_table)
432                         return -ENOMEM;
433         }
434
435         /* fill the entries */
436         idx = 0;
437         ofs = 0;
438         for (i = 0; i < periods; i++) {
439                 rest = fragsize;
440                 /* fill descriptors for a period.
441                  * a period can be split to several descriptors if it's
442                  * over page boundary.
443                  */
444                 do {
445                         unsigned int r;
446                         unsigned int flag;
447                         unsigned int addr;
448
449                         if (idx >= VIA_TABLE_SIZE) {
450                                 dev_err(&pci->dev, "too much table size!\n");
451                                 return -EINVAL;
452                         }
453                         addr = snd_pcm_sgbuf_get_addr(substream, ofs);
454                         ((u32 *)dev->table.area)[idx << 1] = cpu_to_le32(addr);
455                         r = snd_pcm_sgbuf_get_chunk_size(substream, ofs, rest);
456                         rest -= r;
457                         if (! rest) {
458                                 if (i == periods - 1)
459                                         flag = VIA_TBL_BIT_EOL; /* buffer boundary */
460                                 else
461                                         flag = VIA_TBL_BIT_FLAG; /* period boundary */
462                         } else
463                                 flag = 0; /* period continues to the next */
464                         /*
465                         dev_dbg(&pci->dev,
466                                 "tbl %d: at %d  size %d (rest %d)\n",
467                                 idx, ofs, r, rest);
468                         */
469                         ((u32 *)dev->table.area)[(idx<<1) + 1] = cpu_to_le32(r | flag);
470                         dev->idx_table[idx].offset = ofs;
471                         dev->idx_table[idx].size = r;
472                         ofs += r;
473                         idx++;
474                 } while (rest > 0);
475         }
476         dev->tbl_entries = idx;
477         dev->bufsize = periods * fragsize;
478         dev->bufsize2 = dev->bufsize / 2;
479         dev->fragsize = fragsize;
480         return 0;
481 }
482
483
484 static int clean_via_table(struct viadev *dev, struct snd_pcm_substream *substream,
485                            struct pci_dev *pci)
486 {
487         if (dev->table.area) {
488                 snd_dma_free_pages(&dev->table);
489                 dev->table.area = NULL;
490         }
491         kfree(dev->idx_table);
492         dev->idx_table = NULL;
493         return 0;
494 }
495
496 /*
497  *  Basic I/O
498  */
499
500 static inline unsigned int snd_via82xx_codec_xread(struct via82xx *chip)
501 {
502         return inl(VIAREG(chip, AC97));
503 }
504  
505 static inline void snd_via82xx_codec_xwrite(struct via82xx *chip, unsigned int val)
506 {
507         outl(val, VIAREG(chip, AC97));
508 }
509  
510 static int snd_via82xx_codec_ready(struct via82xx *chip, int secondary)
511 {
512         unsigned int timeout = 1000;    /* 1ms */
513         unsigned int val;
514         
515         while (timeout-- > 0) {
516                 udelay(1);
517                 if (!((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY))
518                         return val & 0xffff;
519         }
520         dev_err(chip->card->dev, "codec_ready: codec %i is not ready [0x%x]\n",
521                    secondary, snd_via82xx_codec_xread(chip));
522         return -EIO;
523 }
524  
525 static int snd_via82xx_codec_valid(struct via82xx *chip, int secondary)
526 {
527         unsigned int timeout = 1000;    /* 1ms */
528         unsigned int val, val1;
529         unsigned int stat = !secondary ? VIA_REG_AC97_PRIMARY_VALID :
530                                          VIA_REG_AC97_SECONDARY_VALID;
531         
532         while (timeout-- > 0) {
533                 val = snd_via82xx_codec_xread(chip);
534                 val1 = val & (VIA_REG_AC97_BUSY | stat);
535                 if (val1 == stat)
536                         return val & 0xffff;
537                 udelay(1);
538         }
539         return -EIO;
540 }
541  
542 static void snd_via82xx_codec_wait(struct snd_ac97 *ac97)
543 {
544         struct via82xx *chip = ac97->private_data;
545         int err;
546         err = snd_via82xx_codec_ready(chip, ac97->num);
547         /* here we need to wait fairly for long time.. */
548         if (!nodelay)
549                 msleep(500);
550 }
551
552 static void snd_via82xx_codec_write(struct snd_ac97 *ac97,
553                                     unsigned short reg,
554                                     unsigned short val)
555 {
556         struct via82xx *chip = ac97->private_data;
557         unsigned int xval;
558
559         xval = !ac97->num ? VIA_REG_AC97_CODEC_ID_PRIMARY : VIA_REG_AC97_CODEC_ID_SECONDARY;
560         xval <<= VIA_REG_AC97_CODEC_ID_SHIFT;
561         xval |= reg << VIA_REG_AC97_CMD_SHIFT;
562         xval |= val << VIA_REG_AC97_DATA_SHIFT;
563         snd_via82xx_codec_xwrite(chip, xval);
564         snd_via82xx_codec_ready(chip, ac97->num);
565 }
566
567 static unsigned short snd_via82xx_codec_read(struct snd_ac97 *ac97, unsigned short reg)
568 {
569         struct via82xx *chip = ac97->private_data;
570         unsigned int xval, val = 0xffff;
571         int again = 0;
572
573         xval = ac97->num << VIA_REG_AC97_CODEC_ID_SHIFT;
574         xval |= ac97->num ? VIA_REG_AC97_SECONDARY_VALID : VIA_REG_AC97_PRIMARY_VALID;
575         xval |= VIA_REG_AC97_READ;
576         xval |= (reg & 0x7f) << VIA_REG_AC97_CMD_SHIFT;
577         while (1) {
578                 if (again++ > 3) {
579                         dev_err(chip->card->dev,
580                                 "codec_read: codec %i is not valid [0x%x]\n",
581                                    ac97->num, snd_via82xx_codec_xread(chip));
582                         return 0xffff;
583                 }
584                 snd_via82xx_codec_xwrite(chip, xval);
585                 udelay (20);
586                 if (snd_via82xx_codec_valid(chip, ac97->num) >= 0) {
587                         udelay(25);
588                         val = snd_via82xx_codec_xread(chip);
589                         break;
590                 }
591         }
592         return val & 0xffff;
593 }
594
595 static void snd_via82xx_channel_reset(struct via82xx *chip, struct viadev *viadev)
596 {
597         outb(VIA_REG_CTRL_PAUSE | VIA_REG_CTRL_TERMINATE | VIA_REG_CTRL_RESET,
598              VIADEV_REG(viadev, OFFSET_CONTROL));
599         inb(VIADEV_REG(viadev, OFFSET_CONTROL));
600         udelay(50);
601         /* disable interrupts */
602         outb(0x00, VIADEV_REG(viadev, OFFSET_CONTROL));
603         /* clear interrupts */
604         outb(0x03, VIADEV_REG(viadev, OFFSET_STATUS));
605         outb(0x00, VIADEV_REG(viadev, OFFSET_TYPE)); /* for via686 */
606         // outl(0, VIADEV_REG(viadev, OFFSET_CURR_PTR));
607         viadev->lastpos = 0;
608         viadev->hwptr_done = 0;
609 }
610
611
612 /*
613  *  Interrupt handler
614  *  Used for 686 and 8233A
615  */
616 static irqreturn_t snd_via686_interrupt(int irq, void *dev_id)
617 {
618         struct via82xx *chip = dev_id;
619         unsigned int status;
620         unsigned int i;
621
622         status = inl(VIAREG(chip, SGD_SHADOW));
623         if (! (status & chip->intr_mask)) {
624                 if (chip->rmidi)
625                         /* check mpu401 interrupt */
626                         return snd_mpu401_uart_interrupt(irq, chip->rmidi->private_data);
627                 return IRQ_NONE;
628         }
629
630         /* check status for each stream */
631         spin_lock(&chip->reg_lock);
632         for (i = 0; i < chip->num_devs; i++) {
633                 struct viadev *viadev = &chip->devs[i];
634                 unsigned char c_status = inb(VIADEV_REG(viadev, OFFSET_STATUS));
635                 if (! (c_status & (VIA_REG_STAT_EOL|VIA_REG_STAT_FLAG|VIA_REG_STAT_STOPPED)))
636                         continue;
637                 if (viadev->substream && viadev->running) {
638                         /*
639                          * Update hwptr_done based on 'period elapsed'
640                          * interrupts. We'll use it, when the chip returns 0 
641                          * for OFFSET_CURR_COUNT.
642                          */
643                         if (c_status & VIA_REG_STAT_EOL)
644                                 viadev->hwptr_done = 0;
645                         else
646                                 viadev->hwptr_done += viadev->fragsize;
647                         viadev->in_interrupt = c_status;
648                         spin_unlock(&chip->reg_lock);
649                         snd_pcm_period_elapsed(viadev->substream);
650                         spin_lock(&chip->reg_lock);
651                         viadev->in_interrupt = 0;
652                 }
653                 outb(c_status, VIADEV_REG(viadev, OFFSET_STATUS)); /* ack */
654         }
655         spin_unlock(&chip->reg_lock);
656         return IRQ_HANDLED;
657 }
658
659 /*
660  *  Interrupt handler
661  */
662 static irqreturn_t snd_via8233_interrupt(int irq, void *dev_id)
663 {
664         struct via82xx *chip = dev_id;
665         unsigned int status;
666         unsigned int i;
667         int irqreturn = 0;
668
669         /* check status for each stream */
670         spin_lock(&chip->reg_lock);
671         status = inl(VIAREG(chip, SGD_SHADOW));
672
673         for (i = 0; i < chip->num_devs; i++) {
674                 struct viadev *viadev = &chip->devs[i];
675                 struct snd_pcm_substream *substream;
676                 unsigned char c_status, shadow_status;
677
678                 shadow_status = (status >> viadev->shadow_shift) &
679                         (VIA8233_SHADOW_STAT_ACTIVE|VIA_REG_STAT_EOL|
680                          VIA_REG_STAT_FLAG);
681                 c_status = shadow_status & (VIA_REG_STAT_EOL|VIA_REG_STAT_FLAG);
682                 if (!c_status)
683                         continue;
684
685                 substream = viadev->substream;
686                 if (substream && viadev->running) {
687                         /*
688                          * Update hwptr_done based on 'period elapsed'
689                          * interrupts. We'll use it, when the chip returns 0 
690                          * for OFFSET_CURR_COUNT.
691                          */
692                         if (c_status & VIA_REG_STAT_EOL)
693                                 viadev->hwptr_done = 0;
694                         else
695                                 viadev->hwptr_done += viadev->fragsize;
696                         viadev->in_interrupt = c_status;
697                         if (shadow_status & VIA8233_SHADOW_STAT_ACTIVE)
698                                 viadev->in_interrupt |= VIA_REG_STAT_ACTIVE;
699                         spin_unlock(&chip->reg_lock);
700
701                         snd_pcm_period_elapsed(substream);
702
703                         spin_lock(&chip->reg_lock);
704                         viadev->in_interrupt = 0;
705                 }
706                 outb(c_status, VIADEV_REG(viadev, OFFSET_STATUS)); /* ack */
707                 irqreturn = 1;
708         }
709         spin_unlock(&chip->reg_lock);
710         return IRQ_RETVAL(irqreturn);
711 }
712
713 /*
714  *  PCM callbacks
715  */
716
717 /*
718  * trigger callback
719  */
720 static int snd_via82xx_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
721 {
722         struct via82xx *chip = snd_pcm_substream_chip(substream);
723         struct viadev *viadev = substream->runtime->private_data;
724         unsigned char val;
725
726         if (chip->chip_type != TYPE_VIA686)
727                 val = VIA_REG_CTRL_INT;
728         else
729                 val = 0;
730         switch (cmd) {
731         case SNDRV_PCM_TRIGGER_START:
732         case SNDRV_PCM_TRIGGER_RESUME:
733                 val |= VIA_REG_CTRL_START;
734                 viadev->running = 1;
735                 break;
736         case SNDRV_PCM_TRIGGER_STOP:
737         case SNDRV_PCM_TRIGGER_SUSPEND:
738                 val = VIA_REG_CTRL_TERMINATE;
739                 viadev->running = 0;
740                 break;
741         case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
742                 val |= VIA_REG_CTRL_PAUSE;
743                 viadev->running = 0;
744                 break;
745         case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
746                 viadev->running = 1;
747                 break;
748         default:
749                 return -EINVAL;
750         }
751         outb(val, VIADEV_REG(viadev, OFFSET_CONTROL));
752         if (cmd == SNDRV_PCM_TRIGGER_STOP)
753                 snd_via82xx_channel_reset(chip, viadev);
754         return 0;
755 }
756
757
758 /*
759  * pointer callbacks
760  */
761
762 /*
763  * calculate the linear position at the given sg-buffer index and the rest count
764  */
765
766 #define check_invalid_pos(viadev,pos) \
767         ((pos) < viadev->lastpos && ((pos) >= viadev->bufsize2 ||\
768                                      viadev->lastpos < viadev->bufsize2))
769
770 static inline unsigned int calc_linear_pos(struct via82xx *chip,
771                                            struct viadev *viadev,
772                                            unsigned int idx,
773                                            unsigned int count)
774 {
775         unsigned int size, base, res;
776
777         size = viadev->idx_table[idx].size;
778         base = viadev->idx_table[idx].offset;
779         res = base + size - count;
780         if (res >= viadev->bufsize)
781                 res -= viadev->bufsize;
782
783         /* check the validity of the calculated position */
784         if (size < count) {
785                 dev_dbg(chip->card->dev,
786                         "invalid via82xx_cur_ptr (size = %d, count = %d)\n",
787                            (int)size, (int)count);
788                 res = viadev->lastpos;
789         } else {
790                 if (! count) {
791                         /* Some mobos report count = 0 on the DMA boundary,
792                          * i.e. count = size indeed.
793                          * Let's check whether this step is above the expected size.
794                          */
795                         int delta = res - viadev->lastpos;
796                         if (delta < 0)
797                                 delta += viadev->bufsize;
798                         if ((unsigned int)delta > viadev->fragsize)
799                                 res = base;
800                 }
801                 if (check_invalid_pos(viadev, res)) {
802 #ifdef POINTER_DEBUG
803                         dev_dbg(chip->card->dev,
804                                 "fail: idx = %i/%i, lastpos = 0x%x, bufsize2 = 0x%x, offsize = 0x%x, size = 0x%x, count = 0x%x\n",
805                                 idx, viadev->tbl_entries,
806                                viadev->lastpos, viadev->bufsize2,
807                                viadev->idx_table[idx].offset,
808                                viadev->idx_table[idx].size, count);
809 #endif
810                         /* count register returns full size when end of buffer is reached */
811                         res = base + size;
812                         if (check_invalid_pos(viadev, res)) {
813                                 dev_dbg(chip->card->dev,
814                                         "invalid via82xx_cur_ptr (2), using last valid pointer\n");
815                                 res = viadev->lastpos;
816                         }
817                 }
818         }
819         return res;
820 }
821
822 /*
823  * get the current pointer on via686
824  */
825 static snd_pcm_uframes_t snd_via686_pcm_pointer(struct snd_pcm_substream *substream)
826 {
827         struct via82xx *chip = snd_pcm_substream_chip(substream);
828         struct viadev *viadev = substream->runtime->private_data;
829         unsigned int idx, ptr, count, res;
830
831         if (snd_BUG_ON(!viadev->tbl_entries))
832                 return 0;
833         if (!(inb(VIADEV_REG(viadev, OFFSET_STATUS)) & VIA_REG_STAT_ACTIVE))
834                 return 0;
835
836         spin_lock(&chip->reg_lock);
837         count = inl(VIADEV_REG(viadev, OFFSET_CURR_COUNT)) & 0xffffff;
838         /* The via686a does not have the current index register,
839          * so we need to calculate the index from CURR_PTR.
840          */
841         ptr = inl(VIADEV_REG(viadev, OFFSET_CURR_PTR));
842         if (ptr <= (unsigned int)viadev->table.addr)
843                 idx = 0;
844         else /* CURR_PTR holds the address + 8 */
845                 idx = ((ptr - (unsigned int)viadev->table.addr) / 8 - 1) % viadev->tbl_entries;
846         res = calc_linear_pos(chip, viadev, idx, count);
847         viadev->lastpos = res; /* remember the last position */
848         spin_unlock(&chip->reg_lock);
849
850         return bytes_to_frames(substream->runtime, res);
851 }
852
853 /*
854  * get the current pointer on via823x
855  */
856 static snd_pcm_uframes_t snd_via8233_pcm_pointer(struct snd_pcm_substream *substream)
857 {
858         struct via82xx *chip = snd_pcm_substream_chip(substream);
859         struct viadev *viadev = substream->runtime->private_data;
860         unsigned int idx, count, res;
861         int status;
862         
863         if (snd_BUG_ON(!viadev->tbl_entries))
864                 return 0;
865
866         spin_lock(&chip->reg_lock);
867         count = inl(VIADEV_REG(viadev, OFFSET_CURR_COUNT));
868         status = viadev->in_interrupt;
869         if (!status)
870                 status = inb(VIADEV_REG(viadev, OFFSET_STATUS));
871
872         /* An apparent bug in the 8251 is worked around by sending a 
873          * REG_CTRL_START. */
874         if (chip->revision == VIA_REV_8251 && (status & VIA_REG_STAT_EOL))
875                 snd_via82xx_pcm_trigger(substream, SNDRV_PCM_TRIGGER_START);
876
877         if (!(status & VIA_REG_STAT_ACTIVE)) {
878                 res = 0;
879                 goto unlock;
880         }
881         if (count & 0xffffff) {
882                 idx = count >> 24;
883                 if (idx >= viadev->tbl_entries) {
884 #ifdef POINTER_DEBUG
885                         dev_dbg(chip->card->dev,
886                                 "fail: invalid idx = %i/%i\n", idx,
887                                viadev->tbl_entries);
888 #endif
889                         res = viadev->lastpos;
890                 } else {
891                         count &= 0xffffff;
892                         res = calc_linear_pos(chip, viadev, idx, count);
893                 }
894         } else {
895                 res = viadev->hwptr_done;
896                 if (!viadev->in_interrupt) {
897                         if (status & VIA_REG_STAT_EOL) {
898                                 res = 0;
899                         } else
900                                 if (status & VIA_REG_STAT_FLAG) {
901                                         res += viadev->fragsize;
902                                 }
903                 }
904         }                           
905 unlock:
906         viadev->lastpos = res;
907         spin_unlock(&chip->reg_lock);
908
909         return bytes_to_frames(substream->runtime, res);
910 }
911
912
913 /*
914  * hw_params callback:
915  * allocate the buffer and build up the buffer description table
916  */
917 static int snd_via82xx_hw_params(struct snd_pcm_substream *substream,
918                                  struct snd_pcm_hw_params *hw_params)
919 {
920         struct via82xx *chip = snd_pcm_substream_chip(substream);
921         struct viadev *viadev = substream->runtime->private_data;
922
923         return build_via_table(viadev, substream, chip->pci,
924                                params_periods(hw_params),
925                                params_period_bytes(hw_params));
926 }
927
928 /*
929  * hw_free callback:
930  * clean up the buffer description table and release the buffer
931  */
932 static int snd_via82xx_hw_free(struct snd_pcm_substream *substream)
933 {
934         struct via82xx *chip = snd_pcm_substream_chip(substream);
935         struct viadev *viadev = substream->runtime->private_data;
936
937         clean_via_table(viadev, substream, chip->pci);
938         return 0;
939 }
940
941
942 /*
943  * set up the table pointer
944  */
945 static void snd_via82xx_set_table_ptr(struct via82xx *chip, struct viadev *viadev)
946 {
947         snd_via82xx_codec_ready(chip, 0);
948         outl((u32)viadev->table.addr, VIADEV_REG(viadev, OFFSET_TABLE_PTR));
949         udelay(20);
950         snd_via82xx_codec_ready(chip, 0);
951 }
952
953 /*
954  * prepare callback for playback and capture on via686
955  */
956 static void via686_setup_format(struct via82xx *chip, struct viadev *viadev,
957                                 struct snd_pcm_runtime *runtime)
958 {
959         snd_via82xx_channel_reset(chip, viadev);
960         /* this must be set after channel_reset */
961         snd_via82xx_set_table_ptr(chip, viadev);
962         outb(VIA_REG_TYPE_AUTOSTART |
963              (runtime->format == SNDRV_PCM_FORMAT_S16_LE ? VIA_REG_TYPE_16BIT : 0) |
964              (runtime->channels > 1 ? VIA_REG_TYPE_STEREO : 0) |
965              ((viadev->reg_offset & 0x10) == 0 ? VIA_REG_TYPE_INT_LSAMPLE : 0) |
966              VIA_REG_TYPE_INT_EOL |
967              VIA_REG_TYPE_INT_FLAG, VIADEV_REG(viadev, OFFSET_TYPE));
968 }
969
970 static int snd_via686_playback_prepare(struct snd_pcm_substream *substream)
971 {
972         struct via82xx *chip = snd_pcm_substream_chip(substream);
973         struct viadev *viadev = substream->runtime->private_data;
974         struct snd_pcm_runtime *runtime = substream->runtime;
975
976         snd_ac97_set_rate(chip->ac97, AC97_PCM_FRONT_DAC_RATE, runtime->rate);
977         snd_ac97_set_rate(chip->ac97, AC97_SPDIF, runtime->rate);
978         via686_setup_format(chip, viadev, runtime);
979         return 0;
980 }
981
982 static int snd_via686_capture_prepare(struct snd_pcm_substream *substream)
983 {
984         struct via82xx *chip = snd_pcm_substream_chip(substream);
985         struct viadev *viadev = substream->runtime->private_data;
986         struct snd_pcm_runtime *runtime = substream->runtime;
987
988         snd_ac97_set_rate(chip->ac97, AC97_PCM_LR_ADC_RATE, runtime->rate);
989         via686_setup_format(chip, viadev, runtime);
990         return 0;
991 }
992
993 /*
994  * lock the current rate
995  */
996 static int via_lock_rate(struct via_rate_lock *rec, int rate)
997 {
998         int changed = 0;
999
1000         spin_lock_irq(&rec->lock);
1001         if (rec->rate != rate) {
1002                 if (rec->rate && rec->used > 1) /* already set */
1003                         changed = -EINVAL;
1004                 else {
1005                         rec->rate = rate;
1006                         changed = 1;
1007                 }
1008         }
1009         spin_unlock_irq(&rec->lock);
1010         return changed;
1011 }
1012
1013 /*
1014  * prepare callback for DSX playback on via823x
1015  */
1016 static int snd_via8233_playback_prepare(struct snd_pcm_substream *substream)
1017 {
1018         struct via82xx *chip = snd_pcm_substream_chip(substream);
1019         struct viadev *viadev = substream->runtime->private_data;
1020         struct snd_pcm_runtime *runtime = substream->runtime;
1021         int ac97_rate = chip->dxs_src ? 48000 : runtime->rate;
1022         int rate_changed;
1023         u32 rbits;
1024
1025         if ((rate_changed = via_lock_rate(&chip->rates[0], ac97_rate)) < 0)
1026                 return rate_changed;
1027         if (rate_changed)
1028                 snd_ac97_set_rate(chip->ac97, AC97_PCM_FRONT_DAC_RATE,
1029                                   chip->no_vra ? 48000 : runtime->rate);
1030         if (chip->spdif_on && viadev->reg_offset == 0x30)
1031                 snd_ac97_set_rate(chip->ac97, AC97_SPDIF, runtime->rate);
1032
1033         if (runtime->rate == 48000)
1034                 rbits = 0xfffff;
1035         else
1036                 rbits = (0x100000 / 48000) * runtime->rate +
1037                         ((0x100000 % 48000) * runtime->rate) / 48000;
1038         snd_BUG_ON(rbits & ~0xfffff);
1039         snd_via82xx_channel_reset(chip, viadev);
1040         snd_via82xx_set_table_ptr(chip, viadev);
1041         outb(chip->playback_volume[viadev->reg_offset / 0x10][0],
1042              VIADEV_REG(viadev, OFS_PLAYBACK_VOLUME_L));
1043         outb(chip->playback_volume[viadev->reg_offset / 0x10][1],
1044              VIADEV_REG(viadev, OFS_PLAYBACK_VOLUME_R));
1045         outl((runtime->format == SNDRV_PCM_FORMAT_S16_LE ? VIA8233_REG_TYPE_16BIT : 0) | /* format */
1046              (runtime->channels > 1 ? VIA8233_REG_TYPE_STEREO : 0) | /* stereo */
1047              rbits | /* rate */
1048              0xff000000,    /* STOP index is never reached */
1049              VIADEV_REG(viadev, OFFSET_STOP_IDX));
1050         udelay(20);
1051         snd_via82xx_codec_ready(chip, 0);
1052         return 0;
1053 }
1054
1055 /*
1056  * prepare callback for multi-channel playback on via823x
1057  */
1058 static int snd_via8233_multi_prepare(struct snd_pcm_substream *substream)
1059 {
1060         struct via82xx *chip = snd_pcm_substream_chip(substream);
1061         struct viadev *viadev = substream->runtime->private_data;
1062         struct snd_pcm_runtime *runtime = substream->runtime;
1063         unsigned int slots;
1064         int fmt;
1065
1066         if (via_lock_rate(&chip->rates[0], runtime->rate) < 0)
1067                 return -EINVAL;
1068         snd_ac97_set_rate(chip->ac97, AC97_PCM_FRONT_DAC_RATE, runtime->rate);
1069         snd_ac97_set_rate(chip->ac97, AC97_PCM_SURR_DAC_RATE, runtime->rate);
1070         snd_ac97_set_rate(chip->ac97, AC97_PCM_LFE_DAC_RATE, runtime->rate);
1071         snd_ac97_set_rate(chip->ac97, AC97_SPDIF, runtime->rate);
1072         snd_via82xx_channel_reset(chip, viadev);
1073         snd_via82xx_set_table_ptr(chip, viadev);
1074
1075         fmt = (runtime->format == SNDRV_PCM_FORMAT_S16_LE) ?
1076                 VIA_REG_MULTPLAY_FMT_16BIT : VIA_REG_MULTPLAY_FMT_8BIT;
1077         fmt |= runtime->channels << 4;
1078         outb(fmt, VIADEV_REG(viadev, OFS_MULTPLAY_FORMAT));
1079 #if 0
1080         if (chip->revision == VIA_REV_8233A)
1081                 slots = 0;
1082         else
1083 #endif
1084         {
1085                 /* set sample number to slot 3, 4, 7, 8, 6, 9 (for VIA8233/C,8235) */
1086                 /* corresponding to FL, FR, RL, RR, C, LFE ?? */
1087                 switch (runtime->channels) {
1088                 case 1: slots = (1<<0) | (1<<4); break;
1089                 case 2: slots = (1<<0) | (2<<4); break;
1090                 case 3: slots = (1<<0) | (2<<4) | (5<<8); break;
1091                 case 4: slots = (1<<0) | (2<<4) | (3<<8) | (4<<12); break;
1092                 case 5: slots = (1<<0) | (2<<4) | (3<<8) | (4<<12) | (5<<16); break;
1093                 case 6: slots = (1<<0) | (2<<4) | (3<<8) | (4<<12) | (5<<16) | (6<<20); break;
1094                 default: slots = 0; break;
1095                 }
1096         }
1097         /* STOP index is never reached */
1098         outl(0xff000000 | slots, VIADEV_REG(viadev, OFFSET_STOP_IDX));
1099         udelay(20);
1100         snd_via82xx_codec_ready(chip, 0);
1101         return 0;
1102 }
1103
1104 /*
1105  * prepare callback for capture on via823x
1106  */
1107 static int snd_via8233_capture_prepare(struct snd_pcm_substream *substream)
1108 {
1109         struct via82xx *chip = snd_pcm_substream_chip(substream);
1110         struct viadev *viadev = substream->runtime->private_data;
1111         struct snd_pcm_runtime *runtime = substream->runtime;
1112
1113         if (via_lock_rate(&chip->rates[1], runtime->rate) < 0)
1114                 return -EINVAL;
1115         snd_ac97_set_rate(chip->ac97, AC97_PCM_LR_ADC_RATE, runtime->rate);
1116         snd_via82xx_channel_reset(chip, viadev);
1117         snd_via82xx_set_table_ptr(chip, viadev);
1118         outb(VIA_REG_CAPTURE_FIFO_ENABLE, VIADEV_REG(viadev, OFS_CAPTURE_FIFO));
1119         outl((runtime->format == SNDRV_PCM_FORMAT_S16_LE ? VIA8233_REG_TYPE_16BIT : 0) |
1120              (runtime->channels > 1 ? VIA8233_REG_TYPE_STEREO : 0) |
1121              0xff000000,    /* STOP index is never reached */
1122              VIADEV_REG(viadev, OFFSET_STOP_IDX));
1123         udelay(20);
1124         snd_via82xx_codec_ready(chip, 0);
1125         return 0;
1126 }
1127
1128
1129 /*
1130  * pcm hardware definition, identical for both playback and capture
1131  */
1132 static const struct snd_pcm_hardware snd_via82xx_hw =
1133 {
1134         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1135                                  SNDRV_PCM_INFO_BLOCK_TRANSFER |
1136                                  SNDRV_PCM_INFO_MMAP_VALID |
1137                                  /* SNDRV_PCM_INFO_RESUME | */
1138                                  SNDRV_PCM_INFO_PAUSE),
1139         .formats =              SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE,
1140         .rates =                SNDRV_PCM_RATE_48000,
1141         .rate_min =             48000,
1142         .rate_max =             48000,
1143         .channels_min =         1,
1144         .channels_max =         2,
1145         .buffer_bytes_max =     VIA_MAX_BUFSIZE,
1146         .period_bytes_min =     32,
1147         .period_bytes_max =     VIA_MAX_BUFSIZE / 2,
1148         .periods_min =          2,
1149         .periods_max =          VIA_TABLE_SIZE / 2,
1150         .fifo_size =            0,
1151 };
1152
1153
1154 /*
1155  * open callback skeleton
1156  */
1157 static int snd_via82xx_pcm_open(struct via82xx *chip, struct viadev *viadev,
1158                                 struct snd_pcm_substream *substream)
1159 {
1160         struct snd_pcm_runtime *runtime = substream->runtime;
1161         int err;
1162         struct via_rate_lock *ratep;
1163         bool use_src = false;
1164
1165         runtime->hw = snd_via82xx_hw;
1166         
1167         /* set the hw rate condition */
1168         ratep = &chip->rates[viadev->direction];
1169         spin_lock_irq(&ratep->lock);
1170         ratep->used++;
1171         if (chip->spdif_on && viadev->reg_offset == 0x30) {
1172                 /* DXS#3 and spdif is on */
1173                 runtime->hw.rates = chip->ac97->rates[AC97_RATES_SPDIF];
1174                 snd_pcm_limit_hw_rates(runtime);
1175         } else if (chip->dxs_fixed && viadev->reg_offset < 0x40) {
1176                 /* fixed DXS playback rate */
1177                 runtime->hw.rates = SNDRV_PCM_RATE_48000;
1178                 runtime->hw.rate_min = runtime->hw.rate_max = 48000;
1179         } else if (chip->dxs_src && viadev->reg_offset < 0x40) {
1180                 /* use full SRC capabilities of DXS */
1181                 runtime->hw.rates = (SNDRV_PCM_RATE_CONTINUOUS |
1182                                      SNDRV_PCM_RATE_8000_48000);
1183                 runtime->hw.rate_min = 8000;
1184                 runtime->hw.rate_max = 48000;
1185                 use_src = true;
1186         } else if (! ratep->rate) {
1187                 int idx = viadev->direction ? AC97_RATES_ADC : AC97_RATES_FRONT_DAC;
1188                 runtime->hw.rates = chip->ac97->rates[idx];
1189                 snd_pcm_limit_hw_rates(runtime);
1190         } else {
1191                 /* a fixed rate */
1192                 runtime->hw.rates = SNDRV_PCM_RATE_KNOT;
1193                 runtime->hw.rate_max = runtime->hw.rate_min = ratep->rate;
1194         }
1195         spin_unlock_irq(&ratep->lock);
1196
1197         /* we may remove following constaint when we modify table entries
1198            in interrupt */
1199         if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
1200                 return err;
1201
1202         if (use_src) {
1203                 err = snd_pcm_hw_rule_noresample(runtime, 48000);
1204                 if (err < 0)
1205                         return err;
1206         }
1207
1208         runtime->private_data = viadev;
1209         viadev->substream = substream;
1210
1211         return 0;
1212 }
1213
1214
1215 /*
1216  * open callback for playback on via686
1217  */
1218 static int snd_via686_playback_open(struct snd_pcm_substream *substream)
1219 {
1220         struct via82xx *chip = snd_pcm_substream_chip(substream);
1221         struct viadev *viadev = &chip->devs[chip->playback_devno + substream->number];
1222         int err;
1223
1224         if ((err = snd_via82xx_pcm_open(chip, viadev, substream)) < 0)
1225                 return err;
1226         return 0;
1227 }
1228
1229 /*
1230  * open callback for playback on via823x DXS
1231  */
1232 static int snd_via8233_playback_open(struct snd_pcm_substream *substream)
1233 {
1234         struct via82xx *chip = snd_pcm_substream_chip(substream);
1235         struct viadev *viadev;
1236         unsigned int stream;
1237         int err;
1238
1239         viadev = &chip->devs[chip->playback_devno + substream->number];
1240         if ((err = snd_via82xx_pcm_open(chip, viadev, substream)) < 0)
1241                 return err;
1242         stream = viadev->reg_offset / 0x10;
1243         if (chip->dxs_controls[stream]) {
1244                 chip->playback_volume[stream][0] =
1245                                 VIA_DXS_MAX_VOLUME - (dxs_init_volume & 31);
1246                 chip->playback_volume[stream][1] =
1247                                 VIA_DXS_MAX_VOLUME - (dxs_init_volume & 31);
1248                 chip->dxs_controls[stream]->vd[0].access &=
1249                         ~SNDRV_CTL_ELEM_ACCESS_INACTIVE;
1250                 snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE |
1251                                SNDRV_CTL_EVENT_MASK_INFO,
1252                                &chip->dxs_controls[stream]->id);
1253         }
1254         return 0;
1255 }
1256
1257 /*
1258  * open callback for playback on via823x multi-channel
1259  */
1260 static int snd_via8233_multi_open(struct snd_pcm_substream *substream)
1261 {
1262         struct via82xx *chip = snd_pcm_substream_chip(substream);
1263         struct viadev *viadev = &chip->devs[chip->multi_devno];
1264         int err;
1265         /* channels constraint for VIA8233A
1266          * 3 and 5 channels are not supported
1267          */
1268         static const unsigned int channels[] = {
1269                 1, 2, 4, 6
1270         };
1271         static const struct snd_pcm_hw_constraint_list hw_constraints_channels = {
1272                 .count = ARRAY_SIZE(channels),
1273                 .list = channels,
1274                 .mask = 0,
1275         };
1276
1277         if ((err = snd_via82xx_pcm_open(chip, viadev, substream)) < 0)
1278                 return err;
1279         substream->runtime->hw.channels_max = 6;
1280         if (chip->revision == VIA_REV_8233A)
1281                 snd_pcm_hw_constraint_list(substream->runtime, 0,
1282                                            SNDRV_PCM_HW_PARAM_CHANNELS,
1283                                            &hw_constraints_channels);
1284         return 0;
1285 }
1286
1287 /*
1288  * open callback for capture on via686 and via823x
1289  */
1290 static int snd_via82xx_capture_open(struct snd_pcm_substream *substream)
1291 {
1292         struct via82xx *chip = snd_pcm_substream_chip(substream);
1293         struct viadev *viadev = &chip->devs[chip->capture_devno + substream->pcm->device];
1294
1295         return snd_via82xx_pcm_open(chip, viadev, substream);
1296 }
1297
1298 /*
1299  * close callback
1300  */
1301 static int snd_via82xx_pcm_close(struct snd_pcm_substream *substream)
1302 {
1303         struct via82xx *chip = snd_pcm_substream_chip(substream);
1304         struct viadev *viadev = substream->runtime->private_data;
1305         struct via_rate_lock *ratep;
1306
1307         /* release the rate lock */
1308         ratep = &chip->rates[viadev->direction];
1309         spin_lock_irq(&ratep->lock);
1310         ratep->used--;
1311         if (! ratep->used)
1312                 ratep->rate = 0;
1313         spin_unlock_irq(&ratep->lock);
1314         if (! ratep->rate) {
1315                 if (! viadev->direction) {
1316                         snd_ac97_update_power(chip->ac97,
1317                                               AC97_PCM_FRONT_DAC_RATE, 0);
1318                         snd_ac97_update_power(chip->ac97,
1319                                               AC97_PCM_SURR_DAC_RATE, 0);
1320                         snd_ac97_update_power(chip->ac97,
1321                                               AC97_PCM_LFE_DAC_RATE, 0);
1322                 } else
1323                         snd_ac97_update_power(chip->ac97,
1324                                               AC97_PCM_LR_ADC_RATE, 0);
1325         }
1326         viadev->substream = NULL;
1327         return 0;
1328 }
1329
1330 static int snd_via8233_playback_close(struct snd_pcm_substream *substream)
1331 {
1332         struct via82xx *chip = snd_pcm_substream_chip(substream);
1333         struct viadev *viadev = substream->runtime->private_data;
1334         unsigned int stream;
1335
1336         stream = viadev->reg_offset / 0x10;
1337         if (chip->dxs_controls[stream]) {
1338                 chip->dxs_controls[stream]->vd[0].access |=
1339                         SNDRV_CTL_ELEM_ACCESS_INACTIVE;
1340                 snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_INFO,
1341                                &chip->dxs_controls[stream]->id);
1342         }
1343         return snd_via82xx_pcm_close(substream);
1344 }
1345
1346
1347 /* via686 playback callbacks */
1348 static const struct snd_pcm_ops snd_via686_playback_ops = {
1349         .open =         snd_via686_playback_open,
1350         .close =        snd_via82xx_pcm_close,
1351         .hw_params =    snd_via82xx_hw_params,
1352         .hw_free =      snd_via82xx_hw_free,
1353         .prepare =      snd_via686_playback_prepare,
1354         .trigger =      snd_via82xx_pcm_trigger,
1355         .pointer =      snd_via686_pcm_pointer,
1356 };
1357
1358 /* via686 capture callbacks */
1359 static const struct snd_pcm_ops snd_via686_capture_ops = {
1360         .open =         snd_via82xx_capture_open,
1361         .close =        snd_via82xx_pcm_close,
1362         .hw_params =    snd_via82xx_hw_params,
1363         .hw_free =      snd_via82xx_hw_free,
1364         .prepare =      snd_via686_capture_prepare,
1365         .trigger =      snd_via82xx_pcm_trigger,
1366         .pointer =      snd_via686_pcm_pointer,
1367 };
1368
1369 /* via823x DSX playback callbacks */
1370 static const struct snd_pcm_ops snd_via8233_playback_ops = {
1371         .open =         snd_via8233_playback_open,
1372         .close =        snd_via8233_playback_close,
1373         .hw_params =    snd_via82xx_hw_params,
1374         .hw_free =      snd_via82xx_hw_free,
1375         .prepare =      snd_via8233_playback_prepare,
1376         .trigger =      snd_via82xx_pcm_trigger,
1377         .pointer =      snd_via8233_pcm_pointer,
1378 };
1379
1380 /* via823x multi-channel playback callbacks */
1381 static const struct snd_pcm_ops snd_via8233_multi_ops = {
1382         .open =         snd_via8233_multi_open,
1383         .close =        snd_via82xx_pcm_close,
1384         .hw_params =    snd_via82xx_hw_params,
1385         .hw_free =      snd_via82xx_hw_free,
1386         .prepare =      snd_via8233_multi_prepare,
1387         .trigger =      snd_via82xx_pcm_trigger,
1388         .pointer =      snd_via8233_pcm_pointer,
1389 };
1390
1391 /* via823x capture callbacks */
1392 static const struct snd_pcm_ops snd_via8233_capture_ops = {
1393         .open =         snd_via82xx_capture_open,
1394         .close =        snd_via82xx_pcm_close,
1395         .hw_params =    snd_via82xx_hw_params,
1396         .hw_free =      snd_via82xx_hw_free,
1397         .prepare =      snd_via8233_capture_prepare,
1398         .trigger =      snd_via82xx_pcm_trigger,
1399         .pointer =      snd_via8233_pcm_pointer,
1400 };
1401
1402
1403 static void init_viadev(struct via82xx *chip, int idx, unsigned int reg_offset,
1404                         int shadow_pos, int direction)
1405 {
1406         chip->devs[idx].reg_offset = reg_offset;
1407         chip->devs[idx].shadow_shift = shadow_pos * 4;
1408         chip->devs[idx].direction = direction;
1409         chip->devs[idx].port = chip->port + reg_offset;
1410 }
1411
1412 /*
1413  * create pcm instances for VIA8233, 8233C and 8235 (not 8233A)
1414  */
1415 static int snd_via8233_pcm_new(struct via82xx *chip)
1416 {
1417         struct snd_pcm *pcm;
1418         struct snd_pcm_chmap *chmap;
1419         int i, err;
1420
1421         chip->playback_devno = 0;       /* x 4 */
1422         chip->multi_devno = 4;          /* x 1 */
1423         chip->capture_devno = 5;        /* x 2 */
1424         chip->num_devs = 7;
1425         chip->intr_mask = 0x33033333; /* FLAG|EOL for rec0-1, mc, sdx0-3 */
1426
1427         /* PCM #0:  4 DSX playbacks and 1 capture */
1428         err = snd_pcm_new(chip->card, chip->card->shortname, 0, 4, 1, &pcm);
1429         if (err < 0)
1430                 return err;
1431         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_playback_ops);
1432         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via8233_capture_ops);
1433         pcm->private_data = chip;
1434         strcpy(pcm->name, chip->card->shortname);
1435         chip->pcms[0] = pcm;
1436         /* set up playbacks */
1437         for (i = 0; i < 4; i++)
1438                 init_viadev(chip, i, 0x10 * i, i, 0);
1439         /* capture */
1440         init_viadev(chip, chip->capture_devno, VIA_REG_CAPTURE_8233_STATUS, 6, 1);
1441
1442         snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1443                                        &chip->pci->dev,
1444                                        64*1024, VIA_MAX_BUFSIZE);
1445
1446         err = snd_pcm_add_chmap_ctls(pcm, SNDRV_PCM_STREAM_PLAYBACK,
1447                                      snd_pcm_std_chmaps, 2, 0,
1448                                      &chmap);
1449         if (err < 0)
1450                 return err;
1451
1452         /* PCM #1:  multi-channel playback and 2nd capture */
1453         err = snd_pcm_new(chip->card, chip->card->shortname, 1, 1, 1, &pcm);
1454         if (err < 0)
1455                 return err;
1456         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_multi_ops);
1457         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via8233_capture_ops);
1458         pcm->private_data = chip;
1459         strcpy(pcm->name, chip->card->shortname);
1460         chip->pcms[1] = pcm;
1461         /* set up playback */
1462         init_viadev(chip, chip->multi_devno, VIA_REG_MULTPLAY_STATUS, 4, 0);
1463         /* set up capture */
1464         init_viadev(chip, chip->capture_devno + 1, VIA_REG_CAPTURE_8233_STATUS + 0x10, 7, 1);
1465
1466         snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1467                                        &chip->pci->dev,
1468                                        64*1024, VIA_MAX_BUFSIZE);
1469
1470         err = snd_pcm_add_chmap_ctls(pcm, SNDRV_PCM_STREAM_PLAYBACK,
1471                                      snd_pcm_alt_chmaps, 6, 0,
1472                                      &chmap);
1473         if (err < 0)
1474                 return err;
1475         chip->ac97->chmaps[SNDRV_PCM_STREAM_PLAYBACK] = chmap;
1476
1477         return 0;
1478 }
1479
1480 /*
1481  * create pcm instances for VIA8233A
1482  */
1483 static int snd_via8233a_pcm_new(struct via82xx *chip)
1484 {
1485         struct snd_pcm *pcm;
1486         struct snd_pcm_chmap *chmap;
1487         int err;
1488
1489         chip->multi_devno = 0;
1490         chip->playback_devno = 1;
1491         chip->capture_devno = 2;
1492         chip->num_devs = 3;
1493         chip->intr_mask = 0x03033000; /* FLAG|EOL for rec0, mc, sdx3 */
1494
1495         /* PCM #0:  multi-channel playback and capture */
1496         err = snd_pcm_new(chip->card, chip->card->shortname, 0, 1, 1, &pcm);
1497         if (err < 0)
1498                 return err;
1499         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_multi_ops);
1500         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via8233_capture_ops);
1501         pcm->private_data = chip;
1502         strcpy(pcm->name, chip->card->shortname);
1503         chip->pcms[0] = pcm;
1504         /* set up playback */
1505         init_viadev(chip, chip->multi_devno, VIA_REG_MULTPLAY_STATUS, 4, 0);
1506         /* capture */
1507         init_viadev(chip, chip->capture_devno, VIA_REG_CAPTURE_8233_STATUS, 6, 1);
1508
1509         snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1510                                        &chip->pci->dev,
1511                                        64*1024, VIA_MAX_BUFSIZE);
1512
1513         err = snd_pcm_add_chmap_ctls(pcm, SNDRV_PCM_STREAM_PLAYBACK,
1514                                      snd_pcm_alt_chmaps, 6, 0,
1515                                      &chmap);
1516         if (err < 0)
1517                 return err;
1518         chip->ac97->chmaps[SNDRV_PCM_STREAM_PLAYBACK] = chmap;
1519
1520         /* SPDIF supported? */
1521         if (! ac97_can_spdif(chip->ac97))
1522                 return 0;
1523
1524         /* PCM #1:  DXS3 playback (for spdif) */
1525         err = snd_pcm_new(chip->card, chip->card->shortname, 1, 1, 0, &pcm);
1526         if (err < 0)
1527                 return err;
1528         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via8233_playback_ops);
1529         pcm->private_data = chip;
1530         strcpy(pcm->name, chip->card->shortname);
1531         chip->pcms[1] = pcm;
1532         /* set up playback */
1533         init_viadev(chip, chip->playback_devno, 0x30, 3, 0);
1534
1535         snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1536                                        &chip->pci->dev,
1537                                        64*1024, VIA_MAX_BUFSIZE);
1538         return 0;
1539 }
1540
1541 /*
1542  * create a pcm instance for via686a/b
1543  */
1544 static int snd_via686_pcm_new(struct via82xx *chip)
1545 {
1546         struct snd_pcm *pcm;
1547         int err;
1548
1549         chip->playback_devno = 0;
1550         chip->capture_devno = 1;
1551         chip->num_devs = 2;
1552         chip->intr_mask = 0x77; /* FLAG | EOL for PB, CP, FM */
1553
1554         err = snd_pcm_new(chip->card, chip->card->shortname, 0, 1, 1, &pcm);
1555         if (err < 0)
1556                 return err;
1557         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via686_playback_ops);
1558         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via686_capture_ops);
1559         pcm->private_data = chip;
1560         strcpy(pcm->name, chip->card->shortname);
1561         chip->pcms[0] = pcm;
1562         init_viadev(chip, 0, VIA_REG_PLAYBACK_STATUS, 0, 0);
1563         init_viadev(chip, 1, VIA_REG_CAPTURE_STATUS, 0, 1);
1564
1565         snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
1566                                        &chip->pci->dev,
1567                                        64*1024, VIA_MAX_BUFSIZE);
1568         return 0;
1569 }
1570
1571
1572 /*
1573  *  Mixer part
1574  */
1575
1576 static int snd_via8233_capture_source_info(struct snd_kcontrol *kcontrol,
1577                                            struct snd_ctl_elem_info *uinfo)
1578 {
1579         /* formerly they were "Line" and "Mic", but it looks like that they
1580          * have nothing to do with the actual physical connections...
1581          */
1582         static const char * const texts[2] = {
1583                 "Input1", "Input2"
1584         };
1585         return snd_ctl_enum_info(uinfo, 1, 2, texts);
1586 }
1587
1588 static int snd_via8233_capture_source_get(struct snd_kcontrol *kcontrol,
1589                                           struct snd_ctl_elem_value *ucontrol)
1590 {
1591         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1592         unsigned long port = chip->port + (kcontrol->id.index ? (VIA_REG_CAPTURE_CHANNEL + 0x10) : VIA_REG_CAPTURE_CHANNEL);
1593         ucontrol->value.enumerated.item[0] = inb(port) & VIA_REG_CAPTURE_CHANNEL_MIC ? 1 : 0;
1594         return 0;
1595 }
1596
1597 static int snd_via8233_capture_source_put(struct snd_kcontrol *kcontrol,
1598                                           struct snd_ctl_elem_value *ucontrol)
1599 {
1600         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1601         unsigned long port = chip->port + (kcontrol->id.index ? (VIA_REG_CAPTURE_CHANNEL + 0x10) : VIA_REG_CAPTURE_CHANNEL);
1602         u8 val, oval;
1603
1604         spin_lock_irq(&chip->reg_lock);
1605         oval = inb(port);
1606         val = oval & ~VIA_REG_CAPTURE_CHANNEL_MIC;
1607         if (ucontrol->value.enumerated.item[0])
1608                 val |= VIA_REG_CAPTURE_CHANNEL_MIC;
1609         if (val != oval)
1610                 outb(val, port);
1611         spin_unlock_irq(&chip->reg_lock);
1612         return val != oval;
1613 }
1614
1615 static struct snd_kcontrol_new snd_via8233_capture_source = {
1616         .name = "Input Source Select",
1617         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1618         .info = snd_via8233_capture_source_info,
1619         .get = snd_via8233_capture_source_get,
1620         .put = snd_via8233_capture_source_put,
1621 };
1622
1623 #define snd_via8233_dxs3_spdif_info     snd_ctl_boolean_mono_info
1624
1625 static int snd_via8233_dxs3_spdif_get(struct snd_kcontrol *kcontrol,
1626                                       struct snd_ctl_elem_value *ucontrol)
1627 {
1628         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1629         u8 val;
1630
1631         pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &val);
1632         ucontrol->value.integer.value[0] = (val & VIA8233_SPDIF_DX3) ? 1 : 0;
1633         return 0;
1634 }
1635
1636 static int snd_via8233_dxs3_spdif_put(struct snd_kcontrol *kcontrol,
1637                                       struct snd_ctl_elem_value *ucontrol)
1638 {
1639         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1640         u8 val, oval;
1641
1642         pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &oval);
1643         val = oval & ~VIA8233_SPDIF_DX3;
1644         if (ucontrol->value.integer.value[0])
1645                 val |= VIA8233_SPDIF_DX3;
1646         /* save the spdif flag for rate filtering */
1647         chip->spdif_on = ucontrol->value.integer.value[0] ? 1 : 0;
1648         if (val != oval) {
1649                 pci_write_config_byte(chip->pci, VIA8233_SPDIF_CTRL, val);
1650                 return 1;
1651         }
1652         return 0;
1653 }
1654
1655 static const struct snd_kcontrol_new snd_via8233_dxs3_spdif_control = {
1656         .name = SNDRV_CTL_NAME_IEC958("Output ",NONE,SWITCH),
1657         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1658         .info = snd_via8233_dxs3_spdif_info,
1659         .get = snd_via8233_dxs3_spdif_get,
1660         .put = snd_via8233_dxs3_spdif_put,
1661 };
1662
1663 static int snd_via8233_dxs_volume_info(struct snd_kcontrol *kcontrol,
1664                                        struct snd_ctl_elem_info *uinfo)
1665 {
1666         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
1667         uinfo->count = 2;
1668         uinfo->value.integer.min = 0;
1669         uinfo->value.integer.max = VIA_DXS_MAX_VOLUME;
1670         return 0;
1671 }
1672
1673 static int snd_via8233_dxs_volume_get(struct snd_kcontrol *kcontrol,
1674                                       struct snd_ctl_elem_value *ucontrol)
1675 {
1676         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1677         unsigned int idx = kcontrol->id.subdevice;
1678
1679         ucontrol->value.integer.value[0] = VIA_DXS_MAX_VOLUME - chip->playback_volume[idx][0];
1680         ucontrol->value.integer.value[1] = VIA_DXS_MAX_VOLUME - chip->playback_volume[idx][1];
1681         return 0;
1682 }
1683
1684 static int snd_via8233_pcmdxs_volume_get(struct snd_kcontrol *kcontrol,
1685                                          struct snd_ctl_elem_value *ucontrol)
1686 {
1687         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1688         ucontrol->value.integer.value[0] = VIA_DXS_MAX_VOLUME - chip->playback_volume_c[0];
1689         ucontrol->value.integer.value[1] = VIA_DXS_MAX_VOLUME - chip->playback_volume_c[1];
1690         return 0;
1691 }
1692
1693 static int snd_via8233_dxs_volume_put(struct snd_kcontrol *kcontrol,
1694                                       struct snd_ctl_elem_value *ucontrol)
1695 {
1696         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1697         unsigned int idx = kcontrol->id.subdevice;
1698         unsigned long port = chip->port + 0x10 * idx;
1699         unsigned char val;
1700         int i, change = 0;
1701
1702         for (i = 0; i < 2; i++) {
1703                 val = ucontrol->value.integer.value[i];
1704                 if (val > VIA_DXS_MAX_VOLUME)
1705                         val = VIA_DXS_MAX_VOLUME;
1706                 val = VIA_DXS_MAX_VOLUME - val;
1707                 change |= val != chip->playback_volume[idx][i];
1708                 if (change) {
1709                         chip->playback_volume[idx][i] = val;
1710                         outb(val, port + VIA_REG_OFS_PLAYBACK_VOLUME_L + i);
1711                 }
1712         }
1713         return change;
1714 }
1715
1716 static int snd_via8233_pcmdxs_volume_put(struct snd_kcontrol *kcontrol,
1717                                          struct snd_ctl_elem_value *ucontrol)
1718 {
1719         struct via82xx *chip = snd_kcontrol_chip(kcontrol);
1720         unsigned int idx;
1721         unsigned char val;
1722         int i, change = 0;
1723
1724         for (i = 0; i < 2; i++) {
1725                 val = ucontrol->value.integer.value[i];
1726                 if (val > VIA_DXS_MAX_VOLUME)
1727                         val = VIA_DXS_MAX_VOLUME;
1728                 val = VIA_DXS_MAX_VOLUME - val;
1729                 if (val != chip->playback_volume_c[i]) {
1730                         change = 1;
1731                         chip->playback_volume_c[i] = val;
1732                         for (idx = 0; idx < 4; idx++) {
1733                                 unsigned long port = chip->port + 0x10 * idx;
1734                                 chip->playback_volume[idx][i] = val;
1735                                 outb(val, port + VIA_REG_OFS_PLAYBACK_VOLUME_L + i);
1736                         }
1737                 }
1738         }
1739         return change;
1740 }
1741
1742 static const DECLARE_TLV_DB_SCALE(db_scale_dxs, -4650, 150, 1);
1743
1744 static const struct snd_kcontrol_new snd_via8233_pcmdxs_volume_control = {
1745         .name = "PCM Playback Volume",
1746         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1747         .access = (SNDRV_CTL_ELEM_ACCESS_READWRITE |
1748                    SNDRV_CTL_ELEM_ACCESS_TLV_READ),
1749         .info = snd_via8233_dxs_volume_info,
1750         .get = snd_via8233_pcmdxs_volume_get,
1751         .put = snd_via8233_pcmdxs_volume_put,
1752         .tlv = { .p = db_scale_dxs }
1753 };
1754
1755 static const struct snd_kcontrol_new snd_via8233_dxs_volume_control = {
1756         .iface = SNDRV_CTL_ELEM_IFACE_PCM,
1757         .device = 0,
1758         /* .subdevice set later */
1759         .name = "PCM Playback Volume",
1760         .access = SNDRV_CTL_ELEM_ACCESS_READWRITE |
1761                   SNDRV_CTL_ELEM_ACCESS_TLV_READ |
1762                   SNDRV_CTL_ELEM_ACCESS_INACTIVE,
1763         .info = snd_via8233_dxs_volume_info,
1764         .get = snd_via8233_dxs_volume_get,
1765         .put = snd_via8233_dxs_volume_put,
1766         .tlv = { .p = db_scale_dxs }
1767 };
1768
1769 /*
1770  */
1771
1772 static void snd_via82xx_mixer_free_ac97_bus(struct snd_ac97_bus *bus)
1773 {
1774         struct via82xx *chip = bus->private_data;
1775         chip->ac97_bus = NULL;
1776 }
1777
1778 static void snd_via82xx_mixer_free_ac97(struct snd_ac97 *ac97)
1779 {
1780         struct via82xx *chip = ac97->private_data;
1781         chip->ac97 = NULL;
1782 }
1783
1784 static const struct ac97_quirk ac97_quirks[] = {
1785         {
1786                 .subvendor = 0x1106,
1787                 .subdevice = 0x4161,
1788                 .codec_id = 0x56494161, /* VT1612A */
1789                 .name = "Soltek SL-75DRV5",
1790                 .type = AC97_TUNE_NONE
1791         },
1792         {       /* FIXME: which codec? */
1793                 .subvendor = 0x1106,
1794                 .subdevice = 0x4161,
1795                 .name = "ASRock K7VT2",
1796                 .type = AC97_TUNE_HP_ONLY
1797         },
1798         {
1799                 .subvendor = 0x110a,
1800                 .subdevice = 0x0079,
1801                 .name = "Fujitsu Siemens D1289",
1802                 .type = AC97_TUNE_HP_ONLY
1803         },
1804         {
1805                 .subvendor = 0x1019,
1806                 .subdevice = 0x0a81,
1807                 .name = "ECS K7VTA3",
1808                 .type = AC97_TUNE_HP_ONLY
1809         },
1810         {
1811                 .subvendor = 0x1019,
1812                 .subdevice = 0x0a85,
1813                 .name = "ECS L7VMM2",
1814                 .type = AC97_TUNE_HP_ONLY
1815         },
1816         {
1817                 .subvendor = 0x1019,
1818                 .subdevice = 0x1841,
1819                 .name = "ECS K7VTA3",
1820                 .type = AC97_TUNE_HP_ONLY
1821         },
1822         {
1823                 .subvendor = 0x1849,
1824                 .subdevice = 0x3059,
1825                 .name = "ASRock K7VM2",
1826                 .type = AC97_TUNE_HP_ONLY       /* VT1616 */
1827         },
1828         {
1829                 .subvendor = 0x14cd,
1830                 .subdevice = 0x7002,
1831                 .name = "Unknown",
1832                 .type = AC97_TUNE_ALC_JACK
1833         },
1834         {
1835                 .subvendor = 0x1071,
1836                 .subdevice = 0x8590,
1837                 .name = "Mitac Mobo",
1838                 .type = AC97_TUNE_ALC_JACK
1839         },
1840         {
1841                 .subvendor = 0x161f,
1842                 .subdevice = 0x202b,
1843                 .name = "Arima Notebook",
1844                 .type = AC97_TUNE_HP_ONLY,
1845         },
1846         {
1847                 .subvendor = 0x161f,
1848                 .subdevice = 0x2032,
1849                 .name = "Targa Traveller 811",
1850                 .type = AC97_TUNE_HP_ONLY,
1851         },
1852         {
1853                 .subvendor = 0x161f,
1854                 .subdevice = 0x2032,
1855                 .name = "m680x",
1856                 .type = AC97_TUNE_HP_ONLY, /* http://launchpad.net/bugs/38546 */
1857         },
1858         {
1859                 .subvendor = 0x1297,
1860                 .subdevice = 0xa232,
1861                 .name = "Shuttle AK32VN",
1862                 .type = AC97_TUNE_HP_ONLY
1863         },
1864         { } /* terminator */
1865 };
1866
1867 static int snd_via82xx_mixer_new(struct via82xx *chip, const char *quirk_override)
1868 {
1869         struct snd_ac97_template ac97;
1870         int err;
1871         static const struct snd_ac97_bus_ops ops = {
1872                 .write = snd_via82xx_codec_write,
1873                 .read = snd_via82xx_codec_read,
1874                 .wait = snd_via82xx_codec_wait,
1875         };
1876
1877         if ((err = snd_ac97_bus(chip->card, 0, &ops, chip, &chip->ac97_bus)) < 0)
1878                 return err;
1879         chip->ac97_bus->private_free = snd_via82xx_mixer_free_ac97_bus;
1880         chip->ac97_bus->clock = chip->ac97_clock;
1881
1882         memset(&ac97, 0, sizeof(ac97));
1883         ac97.private_data = chip;
1884         ac97.private_free = snd_via82xx_mixer_free_ac97;
1885         ac97.pci = chip->pci;
1886         ac97.scaps = AC97_SCAP_SKIP_MODEM | AC97_SCAP_POWER_SAVE;
1887         if ((err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97)) < 0)
1888                 return err;
1889
1890         snd_ac97_tune_hardware(chip->ac97, ac97_quirks, quirk_override);
1891
1892         if (chip->chip_type != TYPE_VIA686) {
1893                 /* use slot 10/11 */
1894                 snd_ac97_update_bits(chip->ac97, AC97_EXTENDED_STATUS, 0x03 << 4, 0x03 << 4);
1895         }
1896
1897         return 0;
1898 }
1899
1900 #ifdef SUPPORT_JOYSTICK
1901 #define JOYSTICK_ADDR   0x200
1902 static int snd_via686_create_gameport(struct via82xx *chip, unsigned char *legacy)
1903 {
1904         struct gameport *gp;
1905         struct resource *r;
1906
1907         if (!joystick)
1908                 return -ENODEV;
1909
1910         r = request_region(JOYSTICK_ADDR, 8, "VIA686 gameport");
1911         if (!r) {
1912                 dev_warn(chip->card->dev, "cannot reserve joystick port %#x\n",
1913                        JOYSTICK_ADDR);
1914                 return -EBUSY;
1915         }
1916
1917         chip->gameport = gp = gameport_allocate_port();
1918         if (!gp) {
1919                 dev_err(chip->card->dev,
1920                         "cannot allocate memory for gameport\n");
1921                 release_and_free_resource(r);
1922                 return -ENOMEM;
1923         }
1924
1925         gameport_set_name(gp, "VIA686 Gameport");
1926         gameport_set_phys(gp, "pci%s/gameport0", pci_name(chip->pci));
1927         gameport_set_dev_parent(gp, &chip->pci->dev);
1928         gp->io = JOYSTICK_ADDR;
1929         gameport_set_port_data(gp, r);
1930
1931         /* Enable legacy joystick port */
1932         *legacy |= VIA_FUNC_ENABLE_GAME;
1933         pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, *legacy);
1934
1935         gameport_register_port(chip->gameport);
1936
1937         return 0;
1938 }
1939
1940 static void snd_via686_free_gameport(struct via82xx *chip)
1941 {
1942         if (chip->gameport) {
1943                 struct resource *r = gameport_get_port_data(chip->gameport);
1944
1945                 gameport_unregister_port(chip->gameport);
1946                 chip->gameport = NULL;
1947                 release_and_free_resource(r);
1948         }
1949 }
1950 #else
1951 static inline int snd_via686_create_gameport(struct via82xx *chip, unsigned char *legacy)
1952 {
1953         return -ENOSYS;
1954 }
1955 static inline void snd_via686_free_gameport(struct via82xx *chip) { }
1956 #endif
1957
1958
1959 /*
1960  *
1961  */
1962
1963 static int snd_via8233_init_misc(struct via82xx *chip)
1964 {
1965         int i, err, caps;
1966         unsigned char val;
1967
1968         caps = chip->chip_type == TYPE_VIA8233A ? 1 : 2;
1969         for (i = 0; i < caps; i++) {
1970                 snd_via8233_capture_source.index = i;
1971                 err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_capture_source, chip));
1972                 if (err < 0)
1973                         return err;
1974         }
1975         if (ac97_can_spdif(chip->ac97)) {
1976                 err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_dxs3_spdif_control, chip));
1977                 if (err < 0)
1978                         return err;
1979         }
1980         if (chip->chip_type != TYPE_VIA8233A) {
1981                 /* when no h/w PCM volume control is found, use DXS volume control
1982                  * as the PCM vol control
1983                  */
1984                 struct snd_ctl_elem_id sid;
1985                 memset(&sid, 0, sizeof(sid));
1986                 strcpy(sid.name, "PCM Playback Volume");
1987                 sid.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
1988                 if (! snd_ctl_find_id(chip->card, &sid)) {
1989                         dev_info(chip->card->dev,
1990                                  "Using DXS as PCM Playback\n");
1991                         err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_via8233_pcmdxs_volume_control, chip));
1992                         if (err < 0)
1993                                 return err;
1994                 }
1995                 else /* Using DXS when PCM emulation is enabled is really weird */
1996                 {
1997                         for (i = 0; i < 4; ++i) {
1998                                 struct snd_kcontrol *kctl;
1999
2000                                 kctl = snd_ctl_new1(
2001                                         &snd_via8233_dxs_volume_control, chip);
2002                                 if (!kctl)
2003                                         return -ENOMEM;
2004                                 kctl->id.subdevice = i;
2005                                 err = snd_ctl_add(chip->card, kctl);
2006                                 if (err < 0)
2007                                         return err;
2008                                 chip->dxs_controls[i] = kctl;
2009                         }
2010                 }
2011         }
2012         /* select spdif data slot 10/11 */
2013         pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &val);
2014         val = (val & ~VIA8233_SPDIF_SLOT_MASK) | VIA8233_SPDIF_SLOT_1011;
2015         val &= ~VIA8233_SPDIF_DX3; /* SPDIF off as default */
2016         pci_write_config_byte(chip->pci, VIA8233_SPDIF_CTRL, val);
2017
2018         return 0;
2019 }
2020
2021 static int snd_via686_init_misc(struct via82xx *chip)
2022 {
2023         unsigned char legacy, legacy_cfg;
2024         int rev_h = 0;
2025
2026         legacy = chip->old_legacy;
2027         legacy_cfg = chip->old_legacy_cfg;
2028         legacy |= VIA_FUNC_MIDI_IRQMASK;        /* FIXME: correct? (disable MIDI) */
2029         legacy &= ~VIA_FUNC_ENABLE_GAME;        /* disable joystick */
2030         if (chip->revision >= VIA_REV_686_H) {
2031                 rev_h = 1;
2032                 if (mpu_port >= 0x200) {        /* force MIDI */
2033                         mpu_port &= 0xfffc;
2034                         pci_write_config_dword(chip->pci, 0x18, mpu_port | 0x01);
2035 #ifdef CONFIG_PM_SLEEP
2036                         chip->mpu_port_saved = mpu_port;
2037 #endif
2038                 } else {
2039                         mpu_port = pci_resource_start(chip->pci, 2);
2040                 }
2041         } else {
2042                 switch (mpu_port) {     /* force MIDI */
2043                 case 0x300:
2044                 case 0x310:
2045                 case 0x320:
2046                 case 0x330:
2047                         legacy_cfg &= ~(3 << 2);
2048                         legacy_cfg |= (mpu_port & 0x0030) >> 2;
2049                         break;
2050                 default:                        /* no, use BIOS settings */
2051                         if (legacy & VIA_FUNC_ENABLE_MIDI)
2052                                 mpu_port = 0x300 + ((legacy_cfg & 0x000c) << 2);
2053                         break;
2054                 }
2055         }
2056         if (mpu_port >= 0x200 &&
2057             (chip->mpu_res = request_region(mpu_port, 2, "VIA82xx MPU401"))
2058             != NULL) {
2059                 if (rev_h)
2060                         legacy |= VIA_FUNC_MIDI_PNP;    /* enable PCI I/O 2 */
2061                 legacy |= VIA_FUNC_ENABLE_MIDI;
2062         } else {
2063                 if (rev_h)
2064                         legacy &= ~VIA_FUNC_MIDI_PNP;   /* disable PCI I/O 2 */
2065                 legacy &= ~VIA_FUNC_ENABLE_MIDI;
2066                 mpu_port = 0;
2067         }
2068
2069         pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, legacy);
2070         pci_write_config_byte(chip->pci, VIA_PNP_CONTROL, legacy_cfg);
2071         if (chip->mpu_res) {
2072                 if (snd_mpu401_uart_new(chip->card, 0, MPU401_HW_VIA686A,
2073                                         mpu_port, MPU401_INFO_INTEGRATED |
2074                                         MPU401_INFO_IRQ_HOOK, -1,
2075                                         &chip->rmidi) < 0) {
2076                         dev_warn(chip->card->dev,
2077                                  "unable to initialize MPU-401 at 0x%lx, skipping\n",
2078                                  mpu_port);
2079                         legacy &= ~VIA_FUNC_ENABLE_MIDI;
2080                 } else {
2081                         legacy &= ~VIA_FUNC_MIDI_IRQMASK;       /* enable MIDI interrupt */
2082                 }
2083                 pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, legacy);
2084         }
2085
2086         snd_via686_create_gameport(chip, &legacy);
2087
2088 #ifdef CONFIG_PM_SLEEP
2089         chip->legacy_saved = legacy;
2090         chip->legacy_cfg_saved = legacy_cfg;
2091 #endif
2092
2093         return 0;
2094 }
2095
2096
2097 /*
2098  * proc interface
2099  */
2100 static void snd_via82xx_proc_read(struct snd_info_entry *entry,
2101                                   struct snd_info_buffer *buffer)
2102 {
2103         struct via82xx *chip = entry->private_data;
2104         int i;
2105         
2106         snd_iprintf(buffer, "%s\n\n", chip->card->longname);
2107         for (i = 0; i < 0xa0; i += 4) {
2108                 snd_iprintf(buffer, "%02x: %08x\n", i, inl(chip->port + i));
2109         }
2110 }
2111
2112 static void snd_via82xx_proc_init(struct via82xx *chip)
2113 {
2114         snd_card_ro_proc_new(chip->card, "via82xx", chip,
2115                              snd_via82xx_proc_read);
2116 }
2117
2118 /*
2119  *
2120  */
2121
2122 static int snd_via82xx_chip_init(struct via82xx *chip)
2123 {
2124         unsigned int val;
2125         unsigned long end_time;
2126         unsigned char pval;
2127
2128 #if 0 /* broken on K7M? */
2129         if (chip->chip_type == TYPE_VIA686)
2130                 /* disable all legacy ports */
2131                 pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, 0);
2132 #endif
2133         pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval);
2134         if (! (pval & VIA_ACLINK_C00_READY)) { /* codec not ready? */
2135                 /* deassert ACLink reset, force SYNC */
2136                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL,
2137                                       VIA_ACLINK_CTRL_ENABLE |
2138                                       VIA_ACLINK_CTRL_RESET |
2139                                       VIA_ACLINK_CTRL_SYNC);
2140                 udelay(100);
2141 #if 1 /* FIXME: should we do full reset here for all chip models? */
2142                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, 0x00);
2143                 udelay(100);
2144 #else
2145                 /* deassert ACLink reset, force SYNC (warm AC'97 reset) */
2146                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL,
2147                                       VIA_ACLINK_CTRL_RESET|VIA_ACLINK_CTRL_SYNC);
2148                 udelay(2);
2149 #endif
2150                 /* ACLink on, deassert ACLink reset, VSR, SGD data out */
2151                 /* note - FM data out has trouble with non VRA codecs !! */
2152                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT);
2153                 udelay(100);
2154         }
2155         
2156         /* Make sure VRA is enabled, in case we didn't do a
2157          * complete codec reset, above */
2158         pci_read_config_byte(chip->pci, VIA_ACLINK_CTRL, &pval);
2159         if ((pval & VIA_ACLINK_CTRL_INIT) != VIA_ACLINK_CTRL_INIT) {
2160                 /* ACLink on, deassert ACLink reset, VSR, SGD data out */
2161                 /* note - FM data out has trouble with non VRA codecs !! */
2162                 pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT);
2163                 udelay(100);
2164         }
2165
2166         /* wait until codec ready */
2167         end_time = jiffies + msecs_to_jiffies(750);
2168         do {
2169                 pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval);
2170                 if (pval & VIA_ACLINK_C00_READY) /* primary codec ready */
2171                         break;
2172                 schedule_timeout_uninterruptible(1);
2173         } while (time_before(jiffies, end_time));
2174
2175         if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY)
2176                 dev_err(chip->card->dev,
2177                         "AC'97 codec is not ready [0x%x]\n", val);
2178
2179 #if 0 /* FIXME: we don't support the second codec yet so skip the detection now.. */
2180         snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ |
2181                                  VIA_REG_AC97_SECONDARY_VALID |
2182                                  (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT));
2183         end_time = jiffies + msecs_to_jiffies(750);
2184         snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ |
2185                                  VIA_REG_AC97_SECONDARY_VALID |
2186                                  (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT));
2187         do {
2188                 if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_SECONDARY_VALID) {
2189                         chip->ac97_secondary = 1;
2190                         goto __ac97_ok2;
2191                 }
2192                 schedule_timeout_uninterruptible(1);
2193         } while (time_before(jiffies, end_time));
2194         /* This is ok, the most of motherboards have only one codec */
2195
2196       __ac97_ok2:
2197 #endif
2198
2199         if (chip->chip_type == TYPE_VIA686) {
2200                 /* route FM trap to IRQ, disable FM trap */
2201                 pci_write_config_byte(chip->pci, VIA_FM_NMI_CTRL, 0);
2202                 /* disable all GPI interrupts */
2203                 outl(0, VIAREG(chip, GPI_INTR));
2204         }
2205
2206         if (chip->chip_type != TYPE_VIA686) {
2207                 /* Workaround for Award BIOS bug:
2208                  * DXS channels don't work properly with VRA if MC97 is disabled.
2209                  */
2210                 struct pci_dev *pci;
2211                 pci = pci_get_device(0x1106, 0x3068, NULL); /* MC97 */
2212                 if (pci) {
2213                         unsigned char data;
2214                         pci_read_config_byte(pci, 0x44, &data);
2215                         pci_write_config_byte(pci, 0x44, data | 0x40);
2216                         pci_dev_put(pci);
2217                 }
2218         }
2219
2220         if (chip->chip_type != TYPE_VIA8233A) {
2221                 int i, idx;
2222                 for (idx = 0; idx < 4; idx++) {
2223                         unsigned long port = chip->port + 0x10 * idx;
2224                         for (i = 0; i < 2; i++) {
2225                                 chip->playback_volume[idx][i]=chip->playback_volume_c[i];
2226                                 outb(chip->playback_volume_c[i],
2227                                      port + VIA_REG_OFS_PLAYBACK_VOLUME_L + i);
2228                         }
2229                 }
2230         }
2231
2232         return 0;
2233 }
2234
2235 #ifdef CONFIG_PM_SLEEP
2236 /*
2237  * power management
2238  */
2239 static int snd_via82xx_suspend(struct device *dev)
2240 {
2241         struct snd_card *card = dev_get_drvdata(dev);
2242         struct via82xx *chip = card->private_data;
2243         int i;
2244
2245         snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
2246         for (i = 0; i < chip->num_devs; i++)
2247                 snd_via82xx_channel_reset(chip, &chip->devs[i]);
2248         snd_ac97_suspend(chip->ac97);
2249
2250         /* save misc values */
2251         if (chip->chip_type != TYPE_VIA686) {
2252                 pci_read_config_byte(chip->pci, VIA8233_SPDIF_CTRL, &chip->spdif_ctrl_saved);
2253                 chip->capture_src_saved[0] = inb(chip->port + VIA_REG_CAPTURE_CHANNEL);
2254                 chip->capture_src_saved[1] = inb(chip->port + VIA_REG_CAPTURE_CHANNEL + 0x10);
2255         }
2256
2257         return 0;
2258 }
2259
2260 static int snd_via82xx_resume(struct device *dev)
2261 {
2262         struct snd_card *card = dev_get_drvdata(dev);
2263         struct via82xx *chip = card->private_data;
2264         int i;
2265
2266         snd_via82xx_chip_init(chip);
2267
2268         if (chip->chip_type == TYPE_VIA686) {
2269                 if (chip->mpu_port_saved)
2270                         pci_write_config_dword(chip->pci, 0x18, chip->mpu_port_saved | 0x01);
2271                 pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, chip->legacy_saved);
2272                 pci_write_config_byte(chip->pci, VIA_PNP_CONTROL, chip->legacy_cfg_saved);
2273         } else {
2274                 pci_write_config_byte(chip->pci, VIA8233_SPDIF_CTRL, chip->spdif_ctrl_saved);
2275                 outb(chip->capture_src_saved[0], chip->port + VIA_REG_CAPTURE_CHANNEL);
2276                 outb(chip->capture_src_saved[1], chip->port + VIA_REG_CAPTURE_CHANNEL + 0x10);
2277         }
2278
2279         snd_ac97_resume(chip->ac97);
2280
2281         for (i = 0; i < chip->num_devs; i++)
2282                 snd_via82xx_channel_reset(chip, &chip->devs[i]);
2283
2284         snd_power_change_state(card, SNDRV_CTL_POWER_D0);
2285         return 0;
2286 }
2287
2288 static SIMPLE_DEV_PM_OPS(snd_via82xx_pm, snd_via82xx_suspend, snd_via82xx_resume);
2289 #define SND_VIA82XX_PM_OPS      &snd_via82xx_pm
2290 #else
2291 #define SND_VIA82XX_PM_OPS      NULL
2292 #endif /* CONFIG_PM_SLEEP */
2293
2294 static int snd_via82xx_free(struct via82xx *chip)
2295 {
2296         unsigned int i;
2297
2298         if (chip->irq < 0)
2299                 goto __end_hw;
2300         /* disable interrupts */
2301         for (i = 0; i < chip->num_devs; i++)
2302                 snd_via82xx_channel_reset(chip, &chip->devs[i]);
2303
2304         if (chip->irq >= 0)
2305                 free_irq(chip->irq, chip);
2306  __end_hw:
2307         release_and_free_resource(chip->mpu_res);
2308         pci_release_regions(chip->pci);
2309
2310         if (chip->chip_type == TYPE_VIA686) {
2311                 snd_via686_free_gameport(chip);
2312                 pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE, chip->old_legacy);
2313                 pci_write_config_byte(chip->pci, VIA_PNP_CONTROL, chip->old_legacy_cfg);
2314         }
2315         pci_disable_device(chip->pci);
2316         kfree(chip);
2317         return 0;
2318 }
2319
2320 static int snd_via82xx_dev_free(struct snd_device *device)
2321 {
2322         struct via82xx *chip = device->device_data;
2323         return snd_via82xx_free(chip);
2324 }
2325
2326 static int snd_via82xx_create(struct snd_card *card,
2327                               struct pci_dev *pci,
2328                               int chip_type,
2329                               int revision,
2330                               unsigned int ac97_clock,
2331                               struct via82xx **r_via)
2332 {
2333         struct via82xx *chip;
2334         int err;
2335         static const struct snd_device_ops ops = {
2336                 .dev_free =     snd_via82xx_dev_free,
2337         };
2338
2339         if ((err = pci_enable_device(pci)) < 0)
2340                 return err;
2341
2342         if ((chip = kzalloc(sizeof(*chip), GFP_KERNEL)) == NULL) {
2343                 pci_disable_device(pci);
2344                 return -ENOMEM;
2345         }
2346
2347         chip->chip_type = chip_type;
2348         chip->revision = revision;
2349
2350         spin_lock_init(&chip->reg_lock);
2351         spin_lock_init(&chip->rates[0].lock);
2352         spin_lock_init(&chip->rates[1].lock);
2353         chip->card = card;
2354         chip->pci = pci;
2355         chip->irq = -1;
2356
2357         pci_read_config_byte(pci, VIA_FUNC_ENABLE, &chip->old_legacy);
2358         pci_read_config_byte(pci, VIA_PNP_CONTROL, &chip->old_legacy_cfg);
2359         pci_write_config_byte(chip->pci, VIA_FUNC_ENABLE,
2360                               chip->old_legacy & ~(VIA_FUNC_ENABLE_SB|VIA_FUNC_ENABLE_FM));
2361
2362         if ((err = pci_request_regions(pci, card->driver)) < 0) {
2363                 kfree(chip);
2364                 pci_disable_device(pci);
2365                 return err;
2366         }
2367         chip->port = pci_resource_start(pci, 0);
2368         if (request_irq(pci->irq,
2369                         chip_type == TYPE_VIA8233 ?
2370                         snd_via8233_interrupt : snd_via686_interrupt,
2371                         IRQF_SHARED,
2372                         KBUILD_MODNAME, chip)) {
2373                 dev_err(card->dev, "unable to grab IRQ %d\n", pci->irq);
2374                 snd_via82xx_free(chip);
2375                 return -EBUSY;
2376         }
2377         chip->irq = pci->irq;
2378         card->sync_irq = chip->irq;
2379         if (ac97_clock >= 8000 && ac97_clock <= 48000)
2380                 chip->ac97_clock = ac97_clock;
2381
2382         if ((err = snd_via82xx_chip_init(chip)) < 0) {
2383                 snd_via82xx_free(chip);
2384                 return err;
2385         }
2386
2387         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
2388                 snd_via82xx_free(chip);
2389                 return err;
2390         }
2391
2392         /* The 8233 ac97 controller does not implement the master bit
2393          * in the pci command register. IMHO this is a violation of the PCI spec.
2394          * We call pci_set_master here because it does not hurt. */
2395         pci_set_master(pci);
2396
2397         *r_via = chip;
2398         return 0;
2399 }
2400
2401 struct via823x_info {
2402         int revision;
2403         char *name;
2404         int type;
2405 };
2406 static struct via823x_info via823x_cards[] = {
2407         { VIA_REV_PRE_8233, "VIA 8233-Pre", TYPE_VIA8233 },
2408         { VIA_REV_8233C, "VIA 8233C", TYPE_VIA8233 },
2409         { VIA_REV_8233, "VIA 8233", TYPE_VIA8233 },
2410         { VIA_REV_8233A, "VIA 8233A", TYPE_VIA8233A },
2411         { VIA_REV_8235, "VIA 8235", TYPE_VIA8233 },
2412         { VIA_REV_8237, "VIA 8237", TYPE_VIA8233 },
2413         { VIA_REV_8251, "VIA 8251", TYPE_VIA8233 },
2414 };
2415
2416 /*
2417  * auto detection of DXS channel supports.
2418  */
2419
2420 static struct snd_pci_quirk dxs_whitelist[] = {
2421         SND_PCI_QUIRK(0x1005, 0x4710, "Avance Logic Mobo", VIA_DXS_ENABLE),
2422         SND_PCI_QUIRK(0x1019, 0x0996, "ESC Mobo", VIA_DXS_48K),
2423         SND_PCI_QUIRK(0x1019, 0x0a81, "ECS K7VTA3 v8.0", VIA_DXS_NO_VRA),
2424         SND_PCI_QUIRK(0x1019, 0x0a85, "ECS L7VMM2", VIA_DXS_NO_VRA),
2425         SND_PCI_QUIRK_VENDOR(0x1019, "ESC K8", VIA_DXS_SRC),
2426         SND_PCI_QUIRK(0x1019, 0xaa01, "ESC K8T890-A", VIA_DXS_SRC),
2427         SND_PCI_QUIRK(0x1025, 0x0033, "Acer Inspire 1353LM", VIA_DXS_NO_VRA),
2428         SND_PCI_QUIRK(0x1025, 0x0046, "Acer Aspire 1524 WLMi", VIA_DXS_SRC),
2429         SND_PCI_QUIRK_VENDOR(0x1043, "ASUS A7/A8", VIA_DXS_NO_VRA),
2430         SND_PCI_QUIRK_VENDOR(0x1071, "Diverse Notebook", VIA_DXS_NO_VRA),
2431         SND_PCI_QUIRK(0x10cf, 0x118e, "FSC Laptop", VIA_DXS_ENABLE),
2432         SND_PCI_QUIRK_VENDOR(0x1106, "ASRock", VIA_DXS_SRC),
2433         SND_PCI_QUIRK(0x1297, 0xa231, "Shuttle AK31v2", VIA_DXS_SRC),
2434         SND_PCI_QUIRK(0x1297, 0xa232, "Shuttle", VIA_DXS_SRC),
2435         SND_PCI_QUIRK(0x1297, 0xc160, "Shuttle Sk41G", VIA_DXS_SRC),
2436         SND_PCI_QUIRK(0x1458, 0xa002, "Gigabyte GA-7VAXP", VIA_DXS_ENABLE),
2437         SND_PCI_QUIRK(0x1462, 0x3800, "MSI KT266", VIA_DXS_ENABLE),
2438         SND_PCI_QUIRK(0x1462, 0x7120, "MSI KT4V", VIA_DXS_ENABLE),
2439         SND_PCI_QUIRK(0x1462, 0x7142, "MSI K8MM-V", VIA_DXS_ENABLE),
2440         SND_PCI_QUIRK_VENDOR(0x1462, "MSI Mobo", VIA_DXS_SRC),
2441         SND_PCI_QUIRK(0x147b, 0x1401, "ABIT KD7(-RAID)", VIA_DXS_ENABLE),
2442         SND_PCI_QUIRK(0x147b, 0x1411, "ABIT VA-20", VIA_DXS_ENABLE),
2443         SND_PCI_QUIRK(0x147b, 0x1413, "ABIT KV8 Pro", VIA_DXS_ENABLE),
2444         SND_PCI_QUIRK(0x147b, 0x1415, "ABIT AV8", VIA_DXS_NO_VRA),
2445         SND_PCI_QUIRK(0x14ff, 0x0403, "Twinhead mobo", VIA_DXS_ENABLE),
2446         SND_PCI_QUIRK(0x14ff, 0x0408, "Twinhead laptop", VIA_DXS_SRC),
2447         SND_PCI_QUIRK(0x1558, 0x4701, "Clevo D470", VIA_DXS_SRC),
2448         SND_PCI_QUIRK(0x1584, 0x8120, "Diverse Laptop", VIA_DXS_ENABLE),
2449         SND_PCI_QUIRK(0x1584, 0x8123, "Targa/Uniwill", VIA_DXS_NO_VRA),
2450         SND_PCI_QUIRK(0x161f, 0x202b, "Amira Notebook", VIA_DXS_NO_VRA),
2451         SND_PCI_QUIRK(0x161f, 0x2032, "m680x machines", VIA_DXS_48K),
2452         SND_PCI_QUIRK(0x1631, 0xe004, "PB EasyNote 3174", VIA_DXS_ENABLE),
2453         SND_PCI_QUIRK(0x1695, 0x3005, "EPoX EP-8K9A", VIA_DXS_ENABLE),
2454         SND_PCI_QUIRK_VENDOR(0x1695, "EPoX mobo", VIA_DXS_SRC),
2455         SND_PCI_QUIRK_VENDOR(0x16f3, "Jetway K8", VIA_DXS_SRC),
2456         SND_PCI_QUIRK_VENDOR(0x1734, "FSC Laptop", VIA_DXS_SRC),
2457         SND_PCI_QUIRK(0x1849, 0x3059, "ASRock K7VM2", VIA_DXS_NO_VRA),
2458         SND_PCI_QUIRK_VENDOR(0x1849, "ASRock mobo", VIA_DXS_SRC),
2459         SND_PCI_QUIRK(0x1919, 0x200a, "Soltek SL-K8",  VIA_DXS_NO_VRA),
2460         SND_PCI_QUIRK(0x4005, 0x4710, "MSI K7T266", VIA_DXS_SRC),
2461         { } /* terminator */
2462 };
2463
2464 static int check_dxs_list(struct pci_dev *pci, int revision)
2465 {
2466         const struct snd_pci_quirk *w;
2467
2468         w = snd_pci_quirk_lookup(pci, dxs_whitelist);
2469         if (w) {
2470                 dev_dbg(&pci->dev, "DXS white list for %s found\n",
2471                             snd_pci_quirk_name(w));
2472                 return w->value;
2473         }
2474
2475         /* for newer revision, default to DXS_SRC */
2476         if (revision >= VIA_REV_8235)
2477                 return VIA_DXS_SRC;
2478
2479         /*
2480          * not detected, try 48k rate only to be sure.
2481          */
2482         dev_info(&pci->dev, "Assuming DXS channels with 48k fixed sample rate.\n");
2483         dev_info(&pci->dev, "         Please try dxs_support=5 option\n");
2484         dev_info(&pci->dev, "         and report if it works on your machine.\n");
2485         dev_info(&pci->dev, "         For more details, read ALSA-Configuration.txt.\n");
2486         return VIA_DXS_48K;
2487 };
2488
2489 static int snd_via82xx_probe(struct pci_dev *pci,
2490                              const struct pci_device_id *pci_id)
2491 {
2492         struct snd_card *card;
2493         struct via82xx *chip;
2494         int chip_type = 0, card_type;
2495         unsigned int i;
2496         int err;
2497
2498         err = snd_card_new(&pci->dev, index, id, THIS_MODULE, 0, &card);
2499         if (err < 0)
2500                 return err;
2501
2502         card_type = pci_id->driver_data;
2503         switch (card_type) {
2504         case TYPE_CARD_VIA686:
2505                 strcpy(card->driver, "VIA686A");
2506                 sprintf(card->shortname, "VIA 82C686A/B rev%x", pci->revision);
2507                 chip_type = TYPE_VIA686;
2508                 break;
2509         case TYPE_CARD_VIA8233:
2510                 chip_type = TYPE_VIA8233;
2511                 sprintf(card->shortname, "VIA 823x rev%x", pci->revision);
2512                 for (i = 0; i < ARRAY_SIZE(via823x_cards); i++) {
2513                         if (pci->revision == via823x_cards[i].revision) {
2514                                 chip_type = via823x_cards[i].type;
2515                                 strcpy(card->shortname, via823x_cards[i].name);
2516                                 break;
2517                         }
2518                 }
2519                 if (chip_type != TYPE_VIA8233A) {
2520                         if (dxs_support == VIA_DXS_AUTO)
2521                                 dxs_support = check_dxs_list(pci, pci->revision);
2522                         /* force to use VIA8233 or 8233A model according to
2523                          * dxs_support module option
2524                          */
2525                         if (dxs_support == VIA_DXS_DISABLE)
2526                                 chip_type = TYPE_VIA8233A;
2527                         else
2528                                 chip_type = TYPE_VIA8233;
2529                 }
2530                 if (chip_type == TYPE_VIA8233A)
2531                         strcpy(card->driver, "VIA8233A");
2532                 else if (pci->revision >= VIA_REV_8237)
2533                         strcpy(card->driver, "VIA8237"); /* no slog assignment */
2534                 else
2535                         strcpy(card->driver, "VIA8233");
2536                 break;
2537         default:
2538                 dev_err(card->dev, "invalid card type %d\n", card_type);
2539                 err = -EINVAL;
2540                 goto __error;
2541         }
2542                 
2543         if ((err = snd_via82xx_create(card, pci, chip_type, pci->revision,
2544                                       ac97_clock, &chip)) < 0)
2545                 goto __error;
2546         card->private_data = chip;
2547         if ((err = snd_via82xx_mixer_new(chip, ac97_quirk)) < 0)
2548                 goto __error;
2549
2550         if (chip_type == TYPE_VIA686) {
2551                 if ((err = snd_via686_pcm_new(chip)) < 0 ||
2552                     (err = snd_via686_init_misc(chip)) < 0)
2553                         goto __error;
2554         } else {
2555                 if (chip_type == TYPE_VIA8233A) {
2556                         if ((err = snd_via8233a_pcm_new(chip)) < 0)
2557                                 goto __error;
2558                         // chip->dxs_fixed = 1; /* FIXME: use 48k for DXS #3? */
2559                 } else {
2560                         if ((err = snd_via8233_pcm_new(chip)) < 0)
2561                                 goto __error;
2562                         if (dxs_support == VIA_DXS_48K)
2563                                 chip->dxs_fixed = 1;
2564                         else if (dxs_support == VIA_DXS_NO_VRA)
2565                                 chip->no_vra = 1;
2566                         else if (dxs_support == VIA_DXS_SRC) {
2567                                 chip->no_vra = 1;
2568                                 chip->dxs_src = 1;
2569                         }
2570                 }
2571                 if ((err = snd_via8233_init_misc(chip)) < 0)
2572                         goto __error;
2573         }
2574
2575         /* disable interrupts */
2576         for (i = 0; i < chip->num_devs; i++)
2577                 snd_via82xx_channel_reset(chip, &chip->devs[i]);
2578
2579         snprintf(card->longname, sizeof(card->longname),
2580                  "%s with %s at %#lx, irq %d", card->shortname,
2581                  snd_ac97_get_short_name(chip->ac97), chip->port, chip->irq);
2582
2583         snd_via82xx_proc_init(chip);
2584
2585         if ((err = snd_card_register(card)) < 0) {
2586                 snd_card_free(card);
2587                 return err;
2588         }
2589         pci_set_drvdata(pci, card);
2590         return 0;
2591
2592  __error:
2593         snd_card_free(card);
2594         return err;
2595 }
2596
2597 static void snd_via82xx_remove(struct pci_dev *pci)
2598 {
2599         snd_card_free(pci_get_drvdata(pci));
2600 }
2601
2602 static struct pci_driver via82xx_driver = {
2603         .name = KBUILD_MODNAME,
2604         .id_table = snd_via82xx_ids,
2605         .probe = snd_via82xx_probe,
2606         .remove = snd_via82xx_remove,
2607         .driver = {
2608                 .pm = SND_VIA82XX_PM_OPS,
2609         },
2610 };
2611
2612 module_pci_driver(via82xx_driver);