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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * ALSA modem driver for VIA VT82xx (South Bridge) | |
3 | * | |
4 | * VT82C686A/B/C, VT8233A/C, VT8235 | |
5 | * | |
6 | * Copyright (c) 2000 Jaroslav Kysela <perex@suse.cz> | |
7 | * Tjeerd.Mulder <Tjeerd.Mulder@fujitsu-siemens.com> | |
8 | * 2002 Takashi Iwai <tiwai@suse.de> | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or modify | |
11 | * it under the terms of the GNU General Public License as published by | |
12 | * the Free Software Foundation; either version 2 of the License, or | |
13 | * (at your option) any later version. | |
14 | * | |
15 | * This program is distributed in the hope that it will be useful, | |
16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | * GNU General Public License for more details. | |
19 | * | |
20 | * You should have received a copy of the GNU General Public License | |
21 | * along with this program; if not, write to the Free Software | |
22 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
23 | * | |
24 | */ | |
25 | ||
26 | /* | |
27 | * Changes: | |
28 | * | |
f01cc521 | 29 | * Sep. 2, 2004 Sasha Khapyorsky <sashak@alsa-project.org> |
1da177e4 LT |
30 | * Modified from original audio driver 'via82xx.c' to support AC97 |
31 | * modems. | |
32 | */ | |
33 | ||
34 | #include <sound/driver.h> | |
35 | #include <asm/io.h> | |
36 | #include <linux/delay.h> | |
37 | #include <linux/interrupt.h> | |
38 | #include <linux/init.h> | |
39 | #include <linux/pci.h> | |
40 | #include <linux/slab.h> | |
41 | #include <linux/moduleparam.h> | |
42 | #include <sound/core.h> | |
43 | #include <sound/pcm.h> | |
44 | #include <sound/pcm_params.h> | |
45 | #include <sound/info.h> | |
46 | #include <sound/ac97_codec.h> | |
47 | #include <sound/initval.h> | |
48 | ||
49 | #if 0 | |
50 | #define POINTER_DEBUG | |
51 | #endif | |
52 | ||
53 | MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>"); | |
54 | MODULE_DESCRIPTION("VIA VT82xx modem"); | |
55 | MODULE_LICENSE("GPL"); | |
56 | MODULE_SUPPORTED_DEVICE("{{VIA,VT82C686A/B/C modem,pci}}"); | |
57 | ||
b7fe4622 CL |
58 | static int index = -2; /* Exclude the first card */ |
59 | static char *id = SNDRV_DEFAULT_STR1; /* ID for this card */ | |
60 | static int ac97_clock = 48000; | |
1da177e4 | 61 | |
b7fe4622 | 62 | module_param(index, int, 0444); |
1da177e4 | 63 | MODULE_PARM_DESC(index, "Index value for VIA 82xx bridge."); |
b7fe4622 | 64 | module_param(id, charp, 0444); |
1da177e4 | 65 | MODULE_PARM_DESC(id, "ID string for VIA 82xx bridge."); |
b7fe4622 | 66 | module_param(ac97_clock, int, 0444); |
1da177e4 LT |
67 | MODULE_PARM_DESC(ac97_clock, "AC'97 codec clock (default 48000Hz)."); |
68 | ||
2b3e584b TI |
69 | /* just for backward compatibility */ |
70 | static int enable; | |
698444f3 | 71 | module_param(enable, bool, 0444); |
2b3e584b | 72 | |
1da177e4 LT |
73 | |
74 | /* | |
75 | * Direct registers | |
76 | */ | |
77 | ||
78 | #define VIAREG(via, x) ((via)->port + VIA_REG_##x) | |
79 | #define VIADEV_REG(viadev, x) ((viadev)->port + VIA_REG_##x) | |
80 | ||
81 | /* common offsets */ | |
82 | #define VIA_REG_OFFSET_STATUS 0x00 /* byte - channel status */ | |
83 | #define VIA_REG_STAT_ACTIVE 0x80 /* RO */ | |
84 | #define VIA_REG_STAT_PAUSED 0x40 /* RO */ | |
85 | #define VIA_REG_STAT_TRIGGER_QUEUED 0x08 /* RO */ | |
86 | #define VIA_REG_STAT_STOPPED 0x04 /* RWC */ | |
87 | #define VIA_REG_STAT_EOL 0x02 /* RWC */ | |
88 | #define VIA_REG_STAT_FLAG 0x01 /* RWC */ | |
89 | #define VIA_REG_OFFSET_CONTROL 0x01 /* byte - channel control */ | |
90 | #define VIA_REG_CTRL_START 0x80 /* WO */ | |
91 | #define VIA_REG_CTRL_TERMINATE 0x40 /* WO */ | |
92 | #define VIA_REG_CTRL_AUTOSTART 0x20 | |
93 | #define VIA_REG_CTRL_PAUSE 0x08 /* RW */ | |
94 | #define VIA_REG_CTRL_INT_STOP 0x04 | |
95 | #define VIA_REG_CTRL_INT_EOL 0x02 | |
96 | #define VIA_REG_CTRL_INT_FLAG 0x01 | |
97 | #define VIA_REG_CTRL_RESET 0x01 /* RW - probably reset? undocumented */ | |
98 | #define VIA_REG_CTRL_INT (VIA_REG_CTRL_INT_FLAG | VIA_REG_CTRL_INT_EOL | VIA_REG_CTRL_AUTOSTART) | |
99 | #define VIA_REG_OFFSET_TYPE 0x02 /* byte - channel type (686 only) */ | |
100 | #define VIA_REG_TYPE_AUTOSTART 0x80 /* RW - autostart at EOL */ | |
101 | #define VIA_REG_TYPE_16BIT 0x20 /* RW */ | |
102 | #define VIA_REG_TYPE_STEREO 0x10 /* RW */ | |
103 | #define VIA_REG_TYPE_INT_LLINE 0x00 | |
104 | #define VIA_REG_TYPE_INT_LSAMPLE 0x04 | |
105 | #define VIA_REG_TYPE_INT_LESSONE 0x08 | |
106 | #define VIA_REG_TYPE_INT_MASK 0x0c | |
107 | #define VIA_REG_TYPE_INT_EOL 0x02 | |
108 | #define VIA_REG_TYPE_INT_FLAG 0x01 | |
109 | #define VIA_REG_OFFSET_TABLE_PTR 0x04 /* dword - channel table pointer */ | |
110 | #define VIA_REG_OFFSET_CURR_PTR 0x04 /* dword - channel current pointer */ | |
111 | #define VIA_REG_OFFSET_STOP_IDX 0x08 /* dword - stop index, channel type, sample rate */ | |
112 | #define VIA_REG_OFFSET_CURR_COUNT 0x0c /* dword - channel current count (24 bit) */ | |
113 | #define VIA_REG_OFFSET_CURR_INDEX 0x0f /* byte - channel current index (for via8233 only) */ | |
114 | ||
115 | #define DEFINE_VIA_REGSET(name,val) \ | |
116 | enum {\ | |
117 | VIA_REG_##name##_STATUS = (val),\ | |
118 | VIA_REG_##name##_CONTROL = (val) + 0x01,\ | |
119 | VIA_REG_##name##_TYPE = (val) + 0x02,\ | |
120 | VIA_REG_##name##_TABLE_PTR = (val) + 0x04,\ | |
121 | VIA_REG_##name##_CURR_PTR = (val) + 0x04,\ | |
122 | VIA_REG_##name##_STOP_IDX = (val) + 0x08,\ | |
123 | VIA_REG_##name##_CURR_COUNT = (val) + 0x0c,\ | |
124 | } | |
125 | ||
126 | /* modem block */ | |
127 | DEFINE_VIA_REGSET(MO, 0x40); | |
128 | DEFINE_VIA_REGSET(MI, 0x50); | |
129 | ||
130 | /* AC'97 */ | |
131 | #define VIA_REG_AC97 0x80 /* dword */ | |
132 | #define VIA_REG_AC97_CODEC_ID_MASK (3<<30) | |
133 | #define VIA_REG_AC97_CODEC_ID_SHIFT 30 | |
134 | #define VIA_REG_AC97_CODEC_ID_PRIMARY 0x00 | |
135 | #define VIA_REG_AC97_CODEC_ID_SECONDARY 0x01 | |
136 | #define VIA_REG_AC97_SECONDARY_VALID (1<<27) | |
137 | #define VIA_REG_AC97_PRIMARY_VALID (1<<25) | |
138 | #define VIA_REG_AC97_BUSY (1<<24) | |
139 | #define VIA_REG_AC97_READ (1<<23) | |
140 | #define VIA_REG_AC97_CMD_SHIFT 16 | |
141 | #define VIA_REG_AC97_CMD_MASK 0x7e | |
142 | #define VIA_REG_AC97_DATA_SHIFT 0 | |
143 | #define VIA_REG_AC97_DATA_MASK 0xffff | |
144 | ||
145 | #define VIA_REG_SGD_SHADOW 0x84 /* dword */ | |
146 | #define VIA_REG_SGD_STAT_PB_FLAG (1<<0) | |
147 | #define VIA_REG_SGD_STAT_CP_FLAG (1<<1) | |
148 | #define VIA_REG_SGD_STAT_FM_FLAG (1<<2) | |
149 | #define VIA_REG_SGD_STAT_PB_EOL (1<<4) | |
150 | #define VIA_REG_SGD_STAT_CP_EOL (1<<5) | |
151 | #define VIA_REG_SGD_STAT_FM_EOL (1<<6) | |
152 | #define VIA_REG_SGD_STAT_PB_STOP (1<<8) | |
153 | #define VIA_REG_SGD_STAT_CP_STOP (1<<9) | |
154 | #define VIA_REG_SGD_STAT_FM_STOP (1<<10) | |
155 | #define VIA_REG_SGD_STAT_PB_ACTIVE (1<<12) | |
156 | #define VIA_REG_SGD_STAT_CP_ACTIVE (1<<13) | |
157 | #define VIA_REG_SGD_STAT_FM_ACTIVE (1<<14) | |
158 | #define VIA_REG_SGD_STAT_MR_FLAG (1<<16) | |
159 | #define VIA_REG_SGD_STAT_MW_FLAG (1<<17) | |
160 | #define VIA_REG_SGD_STAT_MR_EOL (1<<20) | |
161 | #define VIA_REG_SGD_STAT_MW_EOL (1<<21) | |
162 | #define VIA_REG_SGD_STAT_MR_STOP (1<<24) | |
163 | #define VIA_REG_SGD_STAT_MW_STOP (1<<25) | |
164 | #define VIA_REG_SGD_STAT_MR_ACTIVE (1<<28) | |
165 | #define VIA_REG_SGD_STAT_MW_ACTIVE (1<<29) | |
166 | ||
167 | #define VIA_REG_GPI_STATUS 0x88 | |
168 | #define VIA_REG_GPI_INTR 0x8c | |
169 | ||
170 | #define VIA_TBL_BIT_FLAG 0x40000000 | |
171 | #define VIA_TBL_BIT_EOL 0x80000000 | |
172 | ||
173 | /* pci space */ | |
174 | #define VIA_ACLINK_STAT 0x40 | |
175 | #define VIA_ACLINK_C11_READY 0x20 | |
176 | #define VIA_ACLINK_C10_READY 0x10 | |
177 | #define VIA_ACLINK_C01_READY 0x04 /* secondary codec ready */ | |
178 | #define VIA_ACLINK_LOWPOWER 0x02 /* low-power state */ | |
179 | #define VIA_ACLINK_C00_READY 0x01 /* primary codec ready */ | |
180 | #define VIA_ACLINK_CTRL 0x41 | |
181 | #define VIA_ACLINK_CTRL_ENABLE 0x80 /* 0: disable, 1: enable */ | |
182 | #define VIA_ACLINK_CTRL_RESET 0x40 /* 0: assert, 1: de-assert */ | |
183 | #define VIA_ACLINK_CTRL_SYNC 0x20 /* 0: release SYNC, 1: force SYNC hi */ | |
184 | #define VIA_ACLINK_CTRL_SDO 0x10 /* 0: release SDO, 1: force SDO hi */ | |
185 | #define VIA_ACLINK_CTRL_VRA 0x08 /* 0: disable VRA, 1: enable VRA */ | |
186 | #define VIA_ACLINK_CTRL_PCM 0x04 /* 0: disable PCM, 1: enable PCM */ | |
187 | #define VIA_ACLINK_CTRL_FM 0x02 /* via686 only */ | |
188 | #define VIA_ACLINK_CTRL_SB 0x01 /* via686 only */ | |
189 | #define VIA_ACLINK_CTRL_INIT (VIA_ACLINK_CTRL_ENABLE|\ | |
190 | VIA_ACLINK_CTRL_RESET|\ | |
191 | VIA_ACLINK_CTRL_PCM) | |
192 | #define VIA_FUNC_ENABLE 0x42 | |
193 | #define VIA_FUNC_MIDI_PNP 0x80 /* FIXME: it's 0x40 in the datasheet! */ | |
194 | #define VIA_FUNC_MIDI_IRQMASK 0x40 /* FIXME: not documented! */ | |
195 | #define VIA_FUNC_RX2C_WRITE 0x20 | |
196 | #define VIA_FUNC_SB_FIFO_EMPTY 0x10 | |
197 | #define VIA_FUNC_ENABLE_GAME 0x08 | |
198 | #define VIA_FUNC_ENABLE_FM 0x04 | |
199 | #define VIA_FUNC_ENABLE_MIDI 0x02 | |
200 | #define VIA_FUNC_ENABLE_SB 0x01 | |
201 | #define VIA_PNP_CONTROL 0x43 | |
202 | #define VIA_MC97_CTRL 0x44 | |
203 | #define VIA_MC97_CTRL_ENABLE 0x80 | |
204 | #define VIA_MC97_CTRL_SECONDARY 0x40 | |
205 | #define VIA_MC97_CTRL_INIT (VIA_MC97_CTRL_ENABLE|\ | |
206 | VIA_MC97_CTRL_SECONDARY) | |
207 | ||
208 | ||
1da177e4 LT |
209 | /* |
210 | * pcm stream | |
211 | */ | |
212 | ||
213 | struct snd_via_sg_table { | |
214 | unsigned int offset; | |
215 | unsigned int size; | |
216 | } ; | |
217 | ||
218 | #define VIA_TABLE_SIZE 255 | |
219 | ||
e437e3d7 | 220 | struct viadev { |
1da177e4 LT |
221 | unsigned int reg_offset; |
222 | unsigned long port; | |
223 | int direction; /* playback = 0, capture = 1 */ | |
e437e3d7 | 224 | struct snd_pcm_substream *substream; |
1da177e4 LT |
225 | int running; |
226 | unsigned int tbl_entries; /* # descriptors */ | |
227 | struct snd_dma_buffer table; | |
228 | struct snd_via_sg_table *idx_table; | |
229 | /* for recovery from the unexpected pointer */ | |
230 | unsigned int lastpos; | |
231 | unsigned int bufsize; | |
232 | unsigned int bufsize2; | |
233 | }; | |
234 | ||
235 | enum { TYPE_CARD_VIA82XX_MODEM = 1 }; | |
236 | ||
237 | #define VIA_MAX_MODEM_DEVS 2 | |
238 | ||
e437e3d7 | 239 | struct via82xx_modem { |
1da177e4 LT |
240 | int irq; |
241 | ||
242 | unsigned long port; | |
243 | ||
244 | unsigned int intr_mask; /* SGD_SHADOW mask to check interrupts */ | |
245 | ||
246 | struct pci_dev *pci; | |
e437e3d7 | 247 | struct snd_card *card; |
1da177e4 LT |
248 | |
249 | unsigned int num_devs; | |
250 | unsigned int playback_devno, capture_devno; | |
e437e3d7 | 251 | struct viadev devs[VIA_MAX_MODEM_DEVS]; |
1da177e4 | 252 | |
e437e3d7 | 253 | struct snd_pcm *pcms[2]; |
1da177e4 | 254 | |
e437e3d7 TI |
255 | struct snd_ac97_bus *ac97_bus; |
256 | struct snd_ac97 *ac97; | |
1da177e4 LT |
257 | unsigned int ac97_clock; |
258 | unsigned int ac97_secondary; /* secondary AC'97 codec is present */ | |
259 | ||
260 | spinlock_t reg_lock; | |
e437e3d7 | 261 | struct snd_info_entry *proc_entry; |
1da177e4 LT |
262 | }; |
263 | ||
f40b6890 | 264 | static struct pci_device_id snd_via82xx_modem_ids[] = { |
1da177e4 LT |
265 | { 0x1106, 0x3068, PCI_ANY_ID, PCI_ANY_ID, 0, 0, TYPE_CARD_VIA82XX_MODEM, }, |
266 | { 0, } | |
267 | }; | |
268 | ||
269 | MODULE_DEVICE_TABLE(pci, snd_via82xx_modem_ids); | |
270 | ||
271 | /* | |
272 | */ | |
273 | ||
274 | /* | |
275 | * allocate and initialize the descriptor buffers | |
276 | * periods = number of periods | |
277 | * fragsize = period size in bytes | |
278 | */ | |
e437e3d7 | 279 | static int build_via_table(struct viadev *dev, struct snd_pcm_substream *substream, |
1da177e4 LT |
280 | struct pci_dev *pci, |
281 | unsigned int periods, unsigned int fragsize) | |
282 | { | |
283 | unsigned int i, idx, ofs, rest; | |
e437e3d7 | 284 | struct via82xx_modem *chip = snd_pcm_substream_chip(substream); |
1da177e4 LT |
285 | struct snd_sg_buf *sgbuf = snd_pcm_substream_sgbuf(substream); |
286 | ||
287 | if (dev->table.area == NULL) { | |
288 | /* the start of each lists must be aligned to 8 bytes, | |
289 | * but the kernel pages are much bigger, so we don't care | |
290 | */ | |
291 | if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(chip->pci), | |
292 | PAGE_ALIGN(VIA_TABLE_SIZE * 2 * 8), | |
293 | &dev->table) < 0) | |
294 | return -ENOMEM; | |
295 | } | |
296 | if (! dev->idx_table) { | |
297 | dev->idx_table = kmalloc(sizeof(*dev->idx_table) * VIA_TABLE_SIZE, GFP_KERNEL); | |
298 | if (! dev->idx_table) | |
299 | return -ENOMEM; | |
300 | } | |
301 | ||
302 | /* fill the entries */ | |
303 | idx = 0; | |
304 | ofs = 0; | |
305 | for (i = 0; i < periods; i++) { | |
306 | rest = fragsize; | |
307 | /* fill descriptors for a period. | |
308 | * a period can be split to several descriptors if it's | |
309 | * over page boundary. | |
310 | */ | |
311 | do { | |
312 | unsigned int r; | |
313 | unsigned int flag; | |
314 | ||
315 | if (idx >= VIA_TABLE_SIZE) { | |
316 | snd_printk(KERN_ERR "via82xx: too much table size!\n"); | |
317 | return -EINVAL; | |
318 | } | |
319 | ((u32 *)dev->table.area)[idx << 1] = cpu_to_le32((u32)snd_pcm_sgbuf_get_addr(sgbuf, ofs)); | |
320 | r = PAGE_SIZE - (ofs % PAGE_SIZE); | |
321 | if (rest < r) | |
322 | r = rest; | |
323 | rest -= r; | |
324 | if (! rest) { | |
325 | if (i == periods - 1) | |
326 | flag = VIA_TBL_BIT_EOL; /* buffer boundary */ | |
327 | else | |
328 | flag = VIA_TBL_BIT_FLAG; /* period boundary */ | |
329 | } else | |
330 | flag = 0; /* period continues to the next */ | |
331 | // printk("via: tbl %d: at %d size %d (rest %d)\n", idx, ofs, r, rest); | |
332 | ((u32 *)dev->table.area)[(idx<<1) + 1] = cpu_to_le32(r | flag); | |
333 | dev->idx_table[idx].offset = ofs; | |
334 | dev->idx_table[idx].size = r; | |
335 | ofs += r; | |
336 | idx++; | |
337 | } while (rest > 0); | |
338 | } | |
339 | dev->tbl_entries = idx; | |
340 | dev->bufsize = periods * fragsize; | |
341 | dev->bufsize2 = dev->bufsize / 2; | |
342 | return 0; | |
343 | } | |
344 | ||
345 | ||
e437e3d7 | 346 | static int clean_via_table(struct viadev *dev, struct snd_pcm_substream *substream, |
1da177e4 LT |
347 | struct pci_dev *pci) |
348 | { | |
349 | if (dev->table.area) { | |
350 | snd_dma_free_pages(&dev->table); | |
351 | dev->table.area = NULL; | |
352 | } | |
4d572776 JJ |
353 | kfree(dev->idx_table); |
354 | dev->idx_table = NULL; | |
1da177e4 LT |
355 | return 0; |
356 | } | |
357 | ||
358 | /* | |
359 | * Basic I/O | |
360 | */ | |
361 | ||
e437e3d7 | 362 | static inline unsigned int snd_via82xx_codec_xread(struct via82xx_modem *chip) |
1da177e4 LT |
363 | { |
364 | return inl(VIAREG(chip, AC97)); | |
365 | } | |
366 | ||
e437e3d7 | 367 | static inline void snd_via82xx_codec_xwrite(struct via82xx_modem *chip, unsigned int val) |
1da177e4 LT |
368 | { |
369 | outl(val, VIAREG(chip, AC97)); | |
370 | } | |
371 | ||
e437e3d7 | 372 | static int snd_via82xx_codec_ready(struct via82xx_modem *chip, int secondary) |
1da177e4 LT |
373 | { |
374 | unsigned int timeout = 1000; /* 1ms */ | |
375 | unsigned int val; | |
376 | ||
377 | while (timeout-- > 0) { | |
378 | udelay(1); | |
379 | if (!((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY)) | |
380 | return val & 0xffff; | |
381 | } | |
e437e3d7 TI |
382 | snd_printk(KERN_ERR "codec_ready: codec %i is not ready [0x%x]\n", |
383 | secondary, snd_via82xx_codec_xread(chip)); | |
1da177e4 LT |
384 | return -EIO; |
385 | } | |
386 | ||
e437e3d7 | 387 | static int snd_via82xx_codec_valid(struct via82xx_modem *chip, int secondary) |
1da177e4 LT |
388 | { |
389 | unsigned int timeout = 1000; /* 1ms */ | |
390 | unsigned int val, val1; | |
391 | unsigned int stat = !secondary ? VIA_REG_AC97_PRIMARY_VALID : | |
392 | VIA_REG_AC97_SECONDARY_VALID; | |
393 | ||
394 | while (timeout-- > 0) { | |
395 | val = snd_via82xx_codec_xread(chip); | |
396 | val1 = val & (VIA_REG_AC97_BUSY | stat); | |
397 | if (val1 == stat) | |
398 | return val & 0xffff; | |
399 | udelay(1); | |
400 | } | |
401 | return -EIO; | |
402 | } | |
403 | ||
e437e3d7 | 404 | static void snd_via82xx_codec_wait(struct snd_ac97 *ac97) |
1da177e4 | 405 | { |
e437e3d7 | 406 | struct via82xx_modem *chip = ac97->private_data; |
1da177e4 LT |
407 | int err; |
408 | err = snd_via82xx_codec_ready(chip, ac97->num); | |
409 | /* here we need to wait fairly for long time.. */ | |
ef21ca24 | 410 | msleep(500); |
1da177e4 LT |
411 | } |
412 | ||
e437e3d7 | 413 | static void snd_via82xx_codec_write(struct snd_ac97 *ac97, |
1da177e4 LT |
414 | unsigned short reg, |
415 | unsigned short val) | |
416 | { | |
e437e3d7 | 417 | struct via82xx_modem *chip = ac97->private_data; |
1da177e4 | 418 | unsigned int xval; |
83a5b72a SK |
419 | if(reg == AC97_GPIO_STATUS) { |
420 | outl(val, VIAREG(chip, GPI_STATUS)); | |
421 | return; | |
422 | } | |
1da177e4 LT |
423 | xval = !ac97->num ? VIA_REG_AC97_CODEC_ID_PRIMARY : VIA_REG_AC97_CODEC_ID_SECONDARY; |
424 | xval <<= VIA_REG_AC97_CODEC_ID_SHIFT; | |
425 | xval |= reg << VIA_REG_AC97_CMD_SHIFT; | |
426 | xval |= val << VIA_REG_AC97_DATA_SHIFT; | |
427 | snd_via82xx_codec_xwrite(chip, xval); | |
428 | snd_via82xx_codec_ready(chip, ac97->num); | |
429 | } | |
430 | ||
e437e3d7 | 431 | static unsigned short snd_via82xx_codec_read(struct snd_ac97 *ac97, unsigned short reg) |
1da177e4 | 432 | { |
e437e3d7 | 433 | struct via82xx_modem *chip = ac97->private_data; |
1da177e4 LT |
434 | unsigned int xval, val = 0xffff; |
435 | int again = 0; | |
436 | ||
437 | xval = ac97->num << VIA_REG_AC97_CODEC_ID_SHIFT; | |
438 | xval |= ac97->num ? VIA_REG_AC97_SECONDARY_VALID : VIA_REG_AC97_PRIMARY_VALID; | |
439 | xval |= VIA_REG_AC97_READ; | |
440 | xval |= (reg & 0x7f) << VIA_REG_AC97_CMD_SHIFT; | |
441 | while (1) { | |
442 | if (again++ > 3) { | |
e437e3d7 TI |
443 | snd_printk(KERN_ERR "codec_read: codec %i is not valid [0x%x]\n", |
444 | ac97->num, snd_via82xx_codec_xread(chip)); | |
1da177e4 LT |
445 | return 0xffff; |
446 | } | |
447 | snd_via82xx_codec_xwrite(chip, xval); | |
448 | udelay (20); | |
449 | if (snd_via82xx_codec_valid(chip, ac97->num) >= 0) { | |
450 | udelay(25); | |
451 | val = snd_via82xx_codec_xread(chip); | |
452 | break; | |
453 | } | |
454 | } | |
455 | return val & 0xffff; | |
456 | } | |
457 | ||
e437e3d7 | 458 | static void snd_via82xx_channel_reset(struct via82xx_modem *chip, struct viadev *viadev) |
1da177e4 LT |
459 | { |
460 | outb(VIA_REG_CTRL_PAUSE | VIA_REG_CTRL_TERMINATE | VIA_REG_CTRL_RESET, | |
461 | VIADEV_REG(viadev, OFFSET_CONTROL)); | |
462 | inb(VIADEV_REG(viadev, OFFSET_CONTROL)); | |
463 | udelay(50); | |
464 | /* disable interrupts */ | |
465 | outb(0x00, VIADEV_REG(viadev, OFFSET_CONTROL)); | |
466 | /* clear interrupts */ | |
467 | outb(0x03, VIADEV_REG(viadev, OFFSET_STATUS)); | |
468 | outb(0x00, VIADEV_REG(viadev, OFFSET_TYPE)); /* for via686 */ | |
469 | // outl(0, VIADEV_REG(viadev, OFFSET_CURR_PTR)); | |
470 | viadev->lastpos = 0; | |
471 | } | |
472 | ||
473 | ||
474 | /* | |
475 | * Interrupt handler | |
476 | */ | |
477 | ||
7d12e780 | 478 | static irqreturn_t snd_via82xx_interrupt(int irq, void *dev_id) |
1da177e4 | 479 | { |
e437e3d7 | 480 | struct via82xx_modem *chip = dev_id; |
1da177e4 LT |
481 | unsigned int status; |
482 | unsigned int i; | |
483 | ||
484 | status = inl(VIAREG(chip, SGD_SHADOW)); | |
485 | if (! (status & chip->intr_mask)) { | |
486 | return IRQ_NONE; | |
487 | } | |
488 | // _skip_sgd: | |
489 | ||
490 | /* check status for each stream */ | |
491 | spin_lock(&chip->reg_lock); | |
492 | for (i = 0; i < chip->num_devs; i++) { | |
e437e3d7 | 493 | struct viadev *viadev = &chip->devs[i]; |
1da177e4 LT |
494 | unsigned char c_status = inb(VIADEV_REG(viadev, OFFSET_STATUS)); |
495 | c_status &= (VIA_REG_STAT_EOL|VIA_REG_STAT_FLAG|VIA_REG_STAT_STOPPED); | |
496 | if (! c_status) | |
497 | continue; | |
498 | if (viadev->substream && viadev->running) { | |
499 | spin_unlock(&chip->reg_lock); | |
500 | snd_pcm_period_elapsed(viadev->substream); | |
501 | spin_lock(&chip->reg_lock); | |
502 | } | |
503 | outb(c_status, VIADEV_REG(viadev, OFFSET_STATUS)); /* ack */ | |
504 | } | |
505 | spin_unlock(&chip->reg_lock); | |
506 | return IRQ_HANDLED; | |
507 | } | |
508 | ||
509 | /* | |
510 | * PCM callbacks | |
511 | */ | |
512 | ||
513 | /* | |
514 | * trigger callback | |
515 | */ | |
e437e3d7 | 516 | static int snd_via82xx_pcm_trigger(struct snd_pcm_substream *substream, int cmd) |
1da177e4 | 517 | { |
e437e3d7 TI |
518 | struct via82xx_modem *chip = snd_pcm_substream_chip(substream); |
519 | struct viadev *viadev = substream->runtime->private_data; | |
1da177e4 LT |
520 | unsigned char val = 0; |
521 | ||
522 | switch (cmd) { | |
523 | case SNDRV_PCM_TRIGGER_START: | |
41e4845c | 524 | case SNDRV_PCM_TRIGGER_SUSPEND: |
1da177e4 LT |
525 | val |= VIA_REG_CTRL_START; |
526 | viadev->running = 1; | |
527 | break; | |
528 | case SNDRV_PCM_TRIGGER_STOP: | |
529 | val = VIA_REG_CTRL_TERMINATE; | |
530 | viadev->running = 0; | |
531 | break; | |
532 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: | |
533 | val |= VIA_REG_CTRL_PAUSE; | |
534 | viadev->running = 0; | |
535 | break; | |
536 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: | |
537 | viadev->running = 1; | |
538 | break; | |
539 | default: | |
540 | return -EINVAL; | |
541 | } | |
542 | outb(val, VIADEV_REG(viadev, OFFSET_CONTROL)); | |
543 | if (cmd == SNDRV_PCM_TRIGGER_STOP) | |
544 | snd_via82xx_channel_reset(chip, viadev); | |
545 | return 0; | |
546 | } | |
547 | ||
1da177e4 LT |
548 | /* |
549 | * pointer callbacks | |
550 | */ | |
551 | ||
552 | /* | |
553 | * calculate the linear position at the given sg-buffer index and the rest count | |
554 | */ | |
555 | ||
556 | #define check_invalid_pos(viadev,pos) \ | |
e437e3d7 TI |
557 | ((pos) < viadev->lastpos && ((pos) >= viadev->bufsize2 ||\ |
558 | viadev->lastpos < viadev->bufsize2)) | |
1da177e4 | 559 | |
e437e3d7 TI |
560 | static inline unsigned int calc_linear_pos(struct viadev *viadev, unsigned int idx, |
561 | unsigned int count) | |
1da177e4 LT |
562 | { |
563 | unsigned int size, res; | |
564 | ||
565 | size = viadev->idx_table[idx].size; | |
566 | res = viadev->idx_table[idx].offset + size - count; | |
567 | ||
568 | /* check the validity of the calculated position */ | |
569 | if (size < count) { | |
e437e3d7 TI |
570 | snd_printd(KERN_ERR "invalid via82xx_cur_ptr (size = %d, count = %d)\n", |
571 | (int)size, (int)count); | |
1da177e4 LT |
572 | res = viadev->lastpos; |
573 | } else if (check_invalid_pos(viadev, res)) { | |
574 | #ifdef POINTER_DEBUG | |
e437e3d7 TI |
575 | printk(KERN_DEBUG "fail: idx = %i/%i, lastpos = 0x%x, " |
576 | "bufsize2 = 0x%x, offsize = 0x%x, size = 0x%x, " | |
577 | "count = 0x%x\n", idx, viadev->tbl_entries, viadev->lastpos, | |
578 | viadev->bufsize2, viadev->idx_table[idx].offset, | |
579 | viadev->idx_table[idx].size, count); | |
1da177e4 LT |
580 | #endif |
581 | if (count && size < count) { | |
e437e3d7 TI |
582 | snd_printd(KERN_ERR "invalid via82xx_cur_ptr, " |
583 | "using last valid pointer\n"); | |
1da177e4 LT |
584 | res = viadev->lastpos; |
585 | } else { | |
586 | if (! count) | |
587 | /* bogus count 0 on the DMA boundary? */ | |
588 | res = viadev->idx_table[idx].offset; | |
589 | else | |
e437e3d7 TI |
590 | /* count register returns full size |
591 | * when end of buffer is reached | |
592 | */ | |
1da177e4 LT |
593 | res = viadev->idx_table[idx].offset + size; |
594 | if (check_invalid_pos(viadev, res)) { | |
e437e3d7 TI |
595 | snd_printd(KERN_ERR "invalid via82xx_cur_ptr (2), " |
596 | "using last valid pointer\n"); | |
1da177e4 LT |
597 | res = viadev->lastpos; |
598 | } | |
599 | } | |
600 | } | |
601 | viadev->lastpos = res; /* remember the last position */ | |
602 | if (res >= viadev->bufsize) | |
603 | res -= viadev->bufsize; | |
604 | return res; | |
605 | } | |
606 | ||
607 | /* | |
608 | * get the current pointer on via686 | |
609 | */ | |
e437e3d7 | 610 | static snd_pcm_uframes_t snd_via686_pcm_pointer(struct snd_pcm_substream *substream) |
1da177e4 | 611 | { |
e437e3d7 TI |
612 | struct via82xx_modem *chip = snd_pcm_substream_chip(substream); |
613 | struct viadev *viadev = substream->runtime->private_data; | |
1da177e4 LT |
614 | unsigned int idx, ptr, count, res; |
615 | ||
616 | snd_assert(viadev->tbl_entries, return 0); | |
617 | if (!(inb(VIADEV_REG(viadev, OFFSET_STATUS)) & VIA_REG_STAT_ACTIVE)) | |
618 | return 0; | |
619 | ||
620 | spin_lock(&chip->reg_lock); | |
621 | count = inl(VIADEV_REG(viadev, OFFSET_CURR_COUNT)) & 0xffffff; | |
622 | /* The via686a does not have the current index register, | |
623 | * so we need to calculate the index from CURR_PTR. | |
624 | */ | |
625 | ptr = inl(VIADEV_REG(viadev, OFFSET_CURR_PTR)); | |
626 | if (ptr <= (unsigned int)viadev->table.addr) | |
627 | idx = 0; | |
628 | else /* CURR_PTR holds the address + 8 */ | |
e437e3d7 TI |
629 | idx = ((ptr - (unsigned int)viadev->table.addr) / 8 - 1) % |
630 | viadev->tbl_entries; | |
1da177e4 LT |
631 | res = calc_linear_pos(viadev, idx, count); |
632 | spin_unlock(&chip->reg_lock); | |
633 | ||
634 | return bytes_to_frames(substream->runtime, res); | |
635 | } | |
636 | ||
637 | /* | |
638 | * hw_params callback: | |
639 | * allocate the buffer and build up the buffer description table | |
640 | */ | |
e437e3d7 TI |
641 | static int snd_via82xx_hw_params(struct snd_pcm_substream *substream, |
642 | struct snd_pcm_hw_params *hw_params) | |
1da177e4 | 643 | { |
e437e3d7 TI |
644 | struct via82xx_modem *chip = snd_pcm_substream_chip(substream); |
645 | struct viadev *viadev = substream->runtime->private_data; | |
1da177e4 LT |
646 | int err; |
647 | ||
648 | err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params)); | |
649 | if (err < 0) | |
650 | return err; | |
651 | err = build_via_table(viadev, substream, chip->pci, | |
652 | params_periods(hw_params), | |
653 | params_period_bytes(hw_params)); | |
654 | if (err < 0) | |
655 | return err; | |
656 | ||
657 | snd_ac97_write(chip->ac97, AC97_LINE1_RATE, params_rate(hw_params)); | |
658 | snd_ac97_write(chip->ac97, AC97_LINE1_LEVEL, 0); | |
659 | ||
660 | return 0; | |
661 | } | |
662 | ||
663 | /* | |
664 | * hw_free callback: | |
665 | * clean up the buffer description table and release the buffer | |
666 | */ | |
e437e3d7 | 667 | static int snd_via82xx_hw_free(struct snd_pcm_substream *substream) |
1da177e4 | 668 | { |
e437e3d7 TI |
669 | struct via82xx_modem *chip = snd_pcm_substream_chip(substream); |
670 | struct viadev *viadev = substream->runtime->private_data; | |
1da177e4 LT |
671 | |
672 | clean_via_table(viadev, substream, chip->pci); | |
673 | snd_pcm_lib_free_pages(substream); | |
674 | return 0; | |
675 | } | |
676 | ||
677 | ||
678 | /* | |
679 | * set up the table pointer | |
680 | */ | |
e437e3d7 | 681 | static void snd_via82xx_set_table_ptr(struct via82xx_modem *chip, struct viadev *viadev) |
1da177e4 LT |
682 | { |
683 | snd_via82xx_codec_ready(chip, chip->ac97_secondary); | |
684 | outl((u32)viadev->table.addr, VIADEV_REG(viadev, OFFSET_TABLE_PTR)); | |
685 | udelay(20); | |
686 | snd_via82xx_codec_ready(chip, chip->ac97_secondary); | |
687 | } | |
688 | ||
689 | /* | |
690 | * prepare callback for playback and capture | |
691 | */ | |
e437e3d7 | 692 | static int snd_via82xx_pcm_prepare(struct snd_pcm_substream *substream) |
1da177e4 | 693 | { |
e437e3d7 TI |
694 | struct via82xx_modem *chip = snd_pcm_substream_chip(substream); |
695 | struct viadev *viadev = substream->runtime->private_data; | |
1da177e4 LT |
696 | |
697 | snd_via82xx_channel_reset(chip, viadev); | |
698 | /* this must be set after channel_reset */ | |
699 | snd_via82xx_set_table_ptr(chip, viadev); | |
700 | outb(VIA_REG_TYPE_AUTOSTART|VIA_REG_TYPE_INT_EOL|VIA_REG_TYPE_INT_FLAG, | |
701 | VIADEV_REG(viadev, OFFSET_TYPE)); | |
702 | return 0; | |
703 | } | |
704 | ||
705 | /* | |
706 | * pcm hardware definition, identical for both playback and capture | |
707 | */ | |
e437e3d7 | 708 | static struct snd_pcm_hardware snd_via82xx_hw = |
1da177e4 LT |
709 | { |
710 | .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED | | |
711 | SNDRV_PCM_INFO_BLOCK_TRANSFER | | |
712 | SNDRV_PCM_INFO_MMAP_VALID | | |
41e4845c | 713 | /* SNDRV_PCM_INFO_RESUME | */ |
1da177e4 LT |
714 | SNDRV_PCM_INFO_PAUSE), |
715 | .formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE, | |
716 | .rates = SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_KNOT, | |
717 | .rate_min = 8000, | |
718 | .rate_max = 16000, | |
719 | .channels_min = 1, | |
720 | .channels_max = 1, | |
721 | .buffer_bytes_max = 128 * 1024, | |
722 | .period_bytes_min = 32, | |
723 | .period_bytes_max = 128 * 1024, | |
724 | .periods_min = 2, | |
725 | .periods_max = VIA_TABLE_SIZE / 2, | |
726 | .fifo_size = 0, | |
727 | }; | |
728 | ||
729 | ||
730 | /* | |
731 | * open callback skeleton | |
732 | */ | |
e437e3d7 TI |
733 | static int snd_via82xx_modem_pcm_open(struct via82xx_modem *chip, struct viadev *viadev, |
734 | struct snd_pcm_substream *substream) | |
1da177e4 | 735 | { |
e437e3d7 | 736 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
737 | int err; |
738 | static unsigned int rates[] = { 8000, 9600, 12000, 16000 }; | |
e437e3d7 | 739 | static struct snd_pcm_hw_constraint_list hw_constraints_rates = { |
1da177e4 LT |
740 | .count = ARRAY_SIZE(rates), |
741 | .list = rates, | |
742 | .mask = 0, | |
743 | }; | |
744 | ||
745 | runtime->hw = snd_via82xx_hw; | |
746 | ||
e437e3d7 TI |
747 | if ((err = snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, |
748 | &hw_constraints_rates)) < 0) | |
1da177e4 LT |
749 | return err; |
750 | ||
751 | /* we may remove following constaint when we modify table entries | |
752 | in interrupt */ | |
753 | if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0) | |
754 | return err; | |
755 | ||
756 | runtime->private_data = viadev; | |
757 | viadev->substream = substream; | |
758 | ||
759 | return 0; | |
760 | } | |
761 | ||
762 | ||
763 | /* | |
764 | * open callback for playback | |
765 | */ | |
e437e3d7 | 766 | static int snd_via82xx_playback_open(struct snd_pcm_substream *substream) |
1da177e4 | 767 | { |
e437e3d7 TI |
768 | struct via82xx_modem *chip = snd_pcm_substream_chip(substream); |
769 | struct viadev *viadev = &chip->devs[chip->playback_devno + substream->number]; | |
1da177e4 LT |
770 | |
771 | return snd_via82xx_modem_pcm_open(chip, viadev, substream); | |
772 | } | |
773 | ||
774 | /* | |
775 | * open callback for capture | |
776 | */ | |
e437e3d7 | 777 | static int snd_via82xx_capture_open(struct snd_pcm_substream *substream) |
1da177e4 | 778 | { |
e437e3d7 TI |
779 | struct via82xx_modem *chip = snd_pcm_substream_chip(substream); |
780 | struct viadev *viadev = &chip->devs[chip->capture_devno + substream->pcm->device]; | |
1da177e4 LT |
781 | |
782 | return snd_via82xx_modem_pcm_open(chip, viadev, substream); | |
783 | } | |
784 | ||
785 | /* | |
786 | * close callback | |
787 | */ | |
e437e3d7 | 788 | static int snd_via82xx_pcm_close(struct snd_pcm_substream *substream) |
1da177e4 | 789 | { |
e437e3d7 | 790 | struct viadev *viadev = substream->runtime->private_data; |
1da177e4 LT |
791 | |
792 | viadev->substream = NULL; | |
793 | return 0; | |
794 | } | |
795 | ||
796 | ||
797 | /* via686 playback callbacks */ | |
e437e3d7 | 798 | static struct snd_pcm_ops snd_via686_playback_ops = { |
1da177e4 LT |
799 | .open = snd_via82xx_playback_open, |
800 | .close = snd_via82xx_pcm_close, | |
801 | .ioctl = snd_pcm_lib_ioctl, | |
802 | .hw_params = snd_via82xx_hw_params, | |
803 | .hw_free = snd_via82xx_hw_free, | |
804 | .prepare = snd_via82xx_pcm_prepare, | |
83a5b72a | 805 | .trigger = snd_via82xx_pcm_trigger, |
1da177e4 LT |
806 | .pointer = snd_via686_pcm_pointer, |
807 | .page = snd_pcm_sgbuf_ops_page, | |
808 | }; | |
809 | ||
810 | /* via686 capture callbacks */ | |
e437e3d7 | 811 | static struct snd_pcm_ops snd_via686_capture_ops = { |
1da177e4 LT |
812 | .open = snd_via82xx_capture_open, |
813 | .close = snd_via82xx_pcm_close, | |
814 | .ioctl = snd_pcm_lib_ioctl, | |
815 | .hw_params = snd_via82xx_hw_params, | |
816 | .hw_free = snd_via82xx_hw_free, | |
817 | .prepare = snd_via82xx_pcm_prepare, | |
83a5b72a | 818 | .trigger = snd_via82xx_pcm_trigger, |
1da177e4 LT |
819 | .pointer = snd_via686_pcm_pointer, |
820 | .page = snd_pcm_sgbuf_ops_page, | |
821 | }; | |
822 | ||
823 | ||
e437e3d7 TI |
824 | static void init_viadev(struct via82xx_modem *chip, int idx, unsigned int reg_offset, |
825 | int direction) | |
1da177e4 LT |
826 | { |
827 | chip->devs[idx].reg_offset = reg_offset; | |
828 | chip->devs[idx].direction = direction; | |
829 | chip->devs[idx].port = chip->port + reg_offset; | |
830 | } | |
831 | ||
832 | /* | |
833 | * create a pcm instance for via686a/b | |
834 | */ | |
e437e3d7 | 835 | static int __devinit snd_via686_pcm_new(struct via82xx_modem *chip) |
1da177e4 | 836 | { |
e437e3d7 | 837 | struct snd_pcm *pcm; |
1da177e4 LT |
838 | int err; |
839 | ||
840 | chip->playback_devno = 0; | |
841 | chip->capture_devno = 1; | |
842 | chip->num_devs = 2; | |
843 | chip->intr_mask = 0x330000; /* FLAGS | EOL for MR, MW */ | |
844 | ||
845 | err = snd_pcm_new(chip->card, chip->card->shortname, 0, 1, 1, &pcm); | |
846 | if (err < 0) | |
847 | return err; | |
848 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via686_playback_ops); | |
849 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via686_capture_ops); | |
6632d198 | 850 | pcm->dev_class = SNDRV_PCM_CLASS_MODEM; |
1da177e4 LT |
851 | pcm->private_data = chip; |
852 | strcpy(pcm->name, chip->card->shortname); | |
853 | chip->pcms[0] = pcm; | |
854 | init_viadev(chip, 0, VIA_REG_MO_STATUS, 0); | |
855 | init_viadev(chip, 1, VIA_REG_MI_STATUS, 1); | |
856 | ||
857 | if ((err = snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG, | |
e437e3d7 TI |
858 | snd_dma_pci_data(chip->pci), |
859 | 64*1024, 128*1024)) < 0) | |
1da177e4 LT |
860 | return err; |
861 | ||
862 | return 0; | |
863 | } | |
864 | ||
865 | ||
866 | /* | |
867 | * Mixer part | |
868 | */ | |
869 | ||
870 | ||
e437e3d7 | 871 | static void snd_via82xx_mixer_free_ac97_bus(struct snd_ac97_bus *bus) |
1da177e4 | 872 | { |
e437e3d7 | 873 | struct via82xx_modem *chip = bus->private_data; |
1da177e4 LT |
874 | chip->ac97_bus = NULL; |
875 | } | |
876 | ||
e437e3d7 | 877 | static void snd_via82xx_mixer_free_ac97(struct snd_ac97 *ac97) |
1da177e4 | 878 | { |
e437e3d7 | 879 | struct via82xx_modem *chip = ac97->private_data; |
1da177e4 LT |
880 | chip->ac97 = NULL; |
881 | } | |
882 | ||
883 | ||
e437e3d7 | 884 | static int __devinit snd_via82xx_mixer_new(struct via82xx_modem *chip) |
1da177e4 | 885 | { |
e437e3d7 | 886 | struct snd_ac97_template ac97; |
1da177e4 | 887 | int err; |
e437e3d7 | 888 | static struct snd_ac97_bus_ops ops = { |
1da177e4 LT |
889 | .write = snd_via82xx_codec_write, |
890 | .read = snd_via82xx_codec_read, | |
891 | .wait = snd_via82xx_codec_wait, | |
892 | }; | |
893 | ||
894 | if ((err = snd_ac97_bus(chip->card, 0, &ops, chip, &chip->ac97_bus)) < 0) | |
895 | return err; | |
896 | chip->ac97_bus->private_free = snd_via82xx_mixer_free_ac97_bus; | |
897 | chip->ac97_bus->clock = chip->ac97_clock; | |
1da177e4 LT |
898 | |
899 | memset(&ac97, 0, sizeof(ac97)); | |
900 | ac97.private_data = chip; | |
901 | ac97.private_free = snd_via82xx_mixer_free_ac97; | |
902 | ac97.pci = chip->pci; | |
903 | ac97.scaps = AC97_SCAP_SKIP_AUDIO; | |
904 | ac97.num = chip->ac97_secondary; | |
905 | ||
906 | if ((err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97)) < 0) | |
907 | return err; | |
908 | ||
909 | return 0; | |
910 | } | |
911 | ||
912 | ||
913 | /* | |
914 | * proc interface | |
915 | */ | |
e437e3d7 | 916 | static void snd_via82xx_proc_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer) |
1da177e4 | 917 | { |
e437e3d7 | 918 | struct via82xx_modem *chip = entry->private_data; |
1da177e4 LT |
919 | int i; |
920 | ||
921 | snd_iprintf(buffer, "%s\n\n", chip->card->longname); | |
922 | for (i = 0; i < 0xa0; i += 4) { | |
923 | snd_iprintf(buffer, "%02x: %08x\n", i, inl(chip->port + i)); | |
924 | } | |
925 | } | |
926 | ||
e437e3d7 | 927 | static void __devinit snd_via82xx_proc_init(struct via82xx_modem *chip) |
1da177e4 | 928 | { |
e437e3d7 | 929 | struct snd_info_entry *entry; |
1da177e4 LT |
930 | |
931 | if (! snd_card_proc_new(chip->card, "via82xx", &entry)) | |
bf850204 | 932 | snd_info_set_text_ops(entry, chip, snd_via82xx_proc_read); |
1da177e4 LT |
933 | } |
934 | ||
935 | /* | |
936 | * | |
937 | */ | |
938 | ||
e437e3d7 | 939 | static int snd_via82xx_chip_init(struct via82xx_modem *chip) |
1da177e4 LT |
940 | { |
941 | unsigned int val; | |
ef21ca24 | 942 | unsigned long end_time; |
1da177e4 LT |
943 | unsigned char pval; |
944 | ||
945 | pci_read_config_byte(chip->pci, VIA_MC97_CTRL, &pval); | |
946 | if((pval & VIA_MC97_CTRL_INIT) != VIA_MC97_CTRL_INIT) { | |
947 | pci_write_config_byte(chip->pci, 0x44, pval|VIA_MC97_CTRL_INIT); | |
948 | udelay(100); | |
949 | } | |
950 | ||
951 | pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval); | |
952 | if (! (pval & VIA_ACLINK_C00_READY)) { /* codec not ready? */ | |
953 | /* deassert ACLink reset, force SYNC */ | |
954 | pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, | |
955 | VIA_ACLINK_CTRL_ENABLE | | |
956 | VIA_ACLINK_CTRL_RESET | | |
957 | VIA_ACLINK_CTRL_SYNC); | |
958 | udelay(100); | |
959 | #if 1 /* FIXME: should we do full reset here for all chip models? */ | |
960 | pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, 0x00); | |
961 | udelay(100); | |
962 | #else | |
963 | /* deassert ACLink reset, force SYNC (warm AC'97 reset) */ | |
964 | pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, | |
965 | VIA_ACLINK_CTRL_RESET|VIA_ACLINK_CTRL_SYNC); | |
966 | udelay(2); | |
967 | #endif | |
968 | /* ACLink on, deassert ACLink reset, VSR, SGD data out */ | |
969 | pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT); | |
970 | udelay(100); | |
971 | } | |
972 | ||
973 | pci_read_config_byte(chip->pci, VIA_ACLINK_CTRL, &pval); | |
974 | if ((pval & VIA_ACLINK_CTRL_INIT) != VIA_ACLINK_CTRL_INIT) { | |
975 | /* ACLink on, deassert ACLink reset, VSR, SGD data out */ | |
976 | pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT); | |
977 | udelay(100); | |
978 | } | |
979 | ||
980 | /* wait until codec ready */ | |
ef21ca24 | 981 | end_time = jiffies + msecs_to_jiffies(750); |
1da177e4 LT |
982 | do { |
983 | pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval); | |
984 | if (pval & VIA_ACLINK_C00_READY) /* primary codec ready */ | |
985 | break; | |
8433a509 | 986 | schedule_timeout_uninterruptible(1); |
ef21ca24 | 987 | } while (time_before(jiffies, end_time)); |
1da177e4 LT |
988 | |
989 | if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY) | |
99b359ba | 990 | snd_printk(KERN_ERR "AC'97 codec is not ready [0x%x]\n", val); |
1da177e4 LT |
991 | |
992 | snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ | | |
993 | VIA_REG_AC97_SECONDARY_VALID | | |
994 | (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT)); | |
ef21ca24 | 995 | end_time = jiffies + msecs_to_jiffies(750); |
1da177e4 LT |
996 | snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ | |
997 | VIA_REG_AC97_SECONDARY_VALID | | |
998 | (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT)); | |
999 | do { | |
1000 | if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_SECONDARY_VALID) { | |
1001 | chip->ac97_secondary = 1; | |
1002 | goto __ac97_ok2; | |
1003 | } | |
8433a509 | 1004 | schedule_timeout_interruptible(1); |
ef21ca24 | 1005 | } while (time_before(jiffies, end_time)); |
1da177e4 LT |
1006 | /* This is ok, the most of motherboards have only one codec */ |
1007 | ||
1008 | __ac97_ok2: | |
1009 | ||
1010 | /* route FM trap to IRQ, disable FM trap */ | |
1011 | // pci_write_config_byte(chip->pci, VIA_FM_NMI_CTRL, 0); | |
1012 | /* disable all GPI interrupts */ | |
1013 | outl(0, VIAREG(chip, GPI_INTR)); | |
1014 | ||
1015 | return 0; | |
1016 | } | |
1017 | ||
1018 | #ifdef CONFIG_PM | |
1019 | /* | |
1020 | * power management | |
1021 | */ | |
57feb835 | 1022 | static int snd_via82xx_suspend(struct pci_dev *pci, pm_message_t state) |
1da177e4 | 1023 | { |
57feb835 TI |
1024 | struct snd_card *card = pci_get_drvdata(pci); |
1025 | struct via82xx_modem *chip = card->private_data; | |
1da177e4 LT |
1026 | int i; |
1027 | ||
57feb835 | 1028 | snd_power_change_state(card, SNDRV_CTL_POWER_D3hot); |
1da177e4 | 1029 | for (i = 0; i < 2; i++) |
57feb835 | 1030 | snd_pcm_suspend_all(chip->pcms[i]); |
1da177e4 LT |
1031 | for (i = 0; i < chip->num_devs; i++) |
1032 | snd_via82xx_channel_reset(chip, &chip->devs[i]); | |
1033 | synchronize_irq(chip->irq); | |
1034 | snd_ac97_suspend(chip->ac97); | |
57feb835 TI |
1035 | pci_set_power_state(pci, PCI_D3hot); |
1036 | pci_disable_device(pci); | |
1037 | pci_save_state(pci); | |
1da177e4 LT |
1038 | return 0; |
1039 | } | |
1040 | ||
57feb835 | 1041 | static int snd_via82xx_resume(struct pci_dev *pci) |
1da177e4 | 1042 | { |
57feb835 TI |
1043 | struct snd_card *card = pci_get_drvdata(pci); |
1044 | struct via82xx_modem *chip = card->private_data; | |
1da177e4 LT |
1045 | int i; |
1046 | ||
57feb835 TI |
1047 | pci_restore_state(pci); |
1048 | pci_enable_device(pci); | |
1049 | pci_set_power_state(pci, PCI_D0); | |
1050 | pci_set_master(pci); | |
1da177e4 LT |
1051 | |
1052 | snd_via82xx_chip_init(chip); | |
1053 | ||
1054 | snd_ac97_resume(chip->ac97); | |
1055 | ||
1056 | for (i = 0; i < chip->num_devs; i++) | |
1057 | snd_via82xx_channel_reset(chip, &chip->devs[i]); | |
1058 | ||
57feb835 | 1059 | snd_power_change_state(card, SNDRV_CTL_POWER_D0); |
1da177e4 LT |
1060 | return 0; |
1061 | } | |
1062 | #endif /* CONFIG_PM */ | |
1063 | ||
e437e3d7 | 1064 | static int snd_via82xx_free(struct via82xx_modem *chip) |
1da177e4 LT |
1065 | { |
1066 | unsigned int i; | |
1067 | ||
1068 | if (chip->irq < 0) | |
1069 | goto __end_hw; | |
1070 | /* disable interrupts */ | |
1071 | for (i = 0; i < chip->num_devs; i++) | |
1072 | snd_via82xx_channel_reset(chip, &chip->devs[i]); | |
1073 | synchronize_irq(chip->irq); | |
1074 | __end_hw: | |
1075 | if (chip->irq >= 0) | |
e437e3d7 | 1076 | free_irq(chip->irq, chip); |
1da177e4 LT |
1077 | pci_release_regions(chip->pci); |
1078 | pci_disable_device(chip->pci); | |
1079 | kfree(chip); | |
1080 | return 0; | |
1081 | } | |
1082 | ||
e437e3d7 | 1083 | static int snd_via82xx_dev_free(struct snd_device *device) |
1da177e4 | 1084 | { |
e437e3d7 | 1085 | struct via82xx_modem *chip = device->device_data; |
1da177e4 LT |
1086 | return snd_via82xx_free(chip); |
1087 | } | |
1088 | ||
e437e3d7 | 1089 | static int __devinit snd_via82xx_create(struct snd_card *card, |
1da177e4 LT |
1090 | struct pci_dev *pci, |
1091 | int chip_type, | |
1092 | int revision, | |
1093 | unsigned int ac97_clock, | |
e437e3d7 | 1094 | struct via82xx_modem ** r_via) |
1da177e4 | 1095 | { |
e437e3d7 | 1096 | struct via82xx_modem *chip; |
1da177e4 | 1097 | int err; |
e437e3d7 | 1098 | static struct snd_device_ops ops = { |
1da177e4 LT |
1099 | .dev_free = snd_via82xx_dev_free, |
1100 | }; | |
1101 | ||
1102 | if ((err = pci_enable_device(pci)) < 0) | |
1103 | return err; | |
1104 | ||
e560d8d8 | 1105 | if ((chip = kzalloc(sizeof(*chip), GFP_KERNEL)) == NULL) { |
1da177e4 LT |
1106 | pci_disable_device(pci); |
1107 | return -ENOMEM; | |
1108 | } | |
1109 | ||
1110 | spin_lock_init(&chip->reg_lock); | |
1111 | chip->card = card; | |
1112 | chip->pci = pci; | |
1113 | chip->irq = -1; | |
1114 | ||
1115 | if ((err = pci_request_regions(pci, card->driver)) < 0) { | |
1116 | kfree(chip); | |
1117 | pci_disable_device(pci); | |
1118 | return err; | |
1119 | } | |
1120 | chip->port = pci_resource_start(pci, 0); | |
65ca68b3 | 1121 | if (request_irq(pci->irq, snd_via82xx_interrupt, IRQF_DISABLED|IRQF_SHARED, |
e437e3d7 | 1122 | card->driver, chip)) { |
99b359ba | 1123 | snd_printk(KERN_ERR "unable to grab IRQ %d\n", pci->irq); |
1da177e4 LT |
1124 | snd_via82xx_free(chip); |
1125 | return -EBUSY; | |
1126 | } | |
1127 | chip->irq = pci->irq; | |
1128 | if (ac97_clock >= 8000 && ac97_clock <= 48000) | |
1129 | chip->ac97_clock = ac97_clock; | |
1130 | synchronize_irq(chip->irq); | |
1131 | ||
1132 | if ((err = snd_via82xx_chip_init(chip)) < 0) { | |
1133 | snd_via82xx_free(chip); | |
1134 | return err; | |
1135 | } | |
1136 | ||
1137 | if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) { | |
1138 | snd_via82xx_free(chip); | |
1139 | return err; | |
1140 | } | |
1141 | ||
1142 | /* The 8233 ac97 controller does not implement the master bit | |
1143 | * in the pci command register. IMHO this is a violation of the PCI spec. | |
1144 | * We call pci_set_master here because it does not hurt. */ | |
1145 | pci_set_master(pci); | |
1146 | ||
1147 | snd_card_set_dev(card, &pci->dev); | |
1148 | ||
1149 | *r_via = chip; | |
1150 | return 0; | |
1151 | } | |
1152 | ||
1153 | ||
1154 | static int __devinit snd_via82xx_probe(struct pci_dev *pci, | |
1155 | const struct pci_device_id *pci_id) | |
1156 | { | |
e437e3d7 TI |
1157 | struct snd_card *card; |
1158 | struct via82xx_modem *chip; | |
1da177e4 LT |
1159 | unsigned char revision; |
1160 | int chip_type = 0, card_type; | |
1161 | unsigned int i; | |
1162 | int err; | |
1163 | ||
b7fe4622 | 1164 | card = snd_card_new(index, id, THIS_MODULE, 0); |
1da177e4 LT |
1165 | if (card == NULL) |
1166 | return -ENOMEM; | |
1167 | ||
1168 | card_type = pci_id->driver_data; | |
1169 | pci_read_config_byte(pci, PCI_REVISION_ID, &revision); | |
1170 | switch (card_type) { | |
1171 | case TYPE_CARD_VIA82XX_MODEM: | |
1172 | strcpy(card->driver, "VIA82XX-MODEM"); | |
1173 | sprintf(card->shortname, "VIA 82XX modem"); | |
1174 | break; | |
1175 | default: | |
1176 | snd_printk(KERN_ERR "invalid card type %d\n", card_type); | |
1177 | err = -EINVAL; | |
1178 | goto __error; | |
1179 | } | |
1180 | ||
b7fe4622 CL |
1181 | if ((err = snd_via82xx_create(card, pci, chip_type, revision, |
1182 | ac97_clock, &chip)) < 0) | |
1da177e4 | 1183 | goto __error; |
57feb835 | 1184 | card->private_data = chip; |
1da177e4 LT |
1185 | if ((err = snd_via82xx_mixer_new(chip)) < 0) |
1186 | goto __error; | |
1187 | ||
1188 | if ((err = snd_via686_pcm_new(chip)) < 0 ) | |
1189 | goto __error; | |
1190 | ||
1da177e4 LT |
1191 | /* disable interrupts */ |
1192 | for (i = 0; i < chip->num_devs; i++) | |
1193 | snd_via82xx_channel_reset(chip, &chip->devs[i]); | |
1194 | ||
1195 | sprintf(card->longname, "%s at 0x%lx, irq %d", | |
1196 | card->shortname, chip->port, chip->irq); | |
1197 | ||
1198 | snd_via82xx_proc_init(chip); | |
1199 | ||
1200 | if ((err = snd_card_register(card)) < 0) { | |
1201 | snd_card_free(card); | |
1202 | return err; | |
1203 | } | |
1204 | pci_set_drvdata(pci, card); | |
1da177e4 LT |
1205 | return 0; |
1206 | ||
1207 | __error: | |
1208 | snd_card_free(card); | |
1209 | return err; | |
1210 | } | |
1211 | ||
1212 | static void __devexit snd_via82xx_remove(struct pci_dev *pci) | |
1213 | { | |
1214 | snd_card_free(pci_get_drvdata(pci)); | |
1215 | pci_set_drvdata(pci, NULL); | |
1216 | } | |
1217 | ||
1218 | static struct pci_driver driver = { | |
1219 | .name = "VIA 82xx Modem", | |
1220 | .id_table = snd_via82xx_modem_ids, | |
1221 | .probe = snd_via82xx_probe, | |
1222 | .remove = __devexit_p(snd_via82xx_remove), | |
57feb835 TI |
1223 | #ifdef CONFIG_PM |
1224 | .suspend = snd_via82xx_suspend, | |
1225 | .resume = snd_via82xx_resume, | |
1226 | #endif | |
1da177e4 LT |
1227 | }; |
1228 | ||
1229 | static int __init alsa_card_via82xx_init(void) | |
1230 | { | |
01d25d46 | 1231 | return pci_register_driver(&driver); |
1da177e4 LT |
1232 | } |
1233 | ||
1234 | static void __exit alsa_card_via82xx_exit(void) | |
1235 | { | |
1236 | pci_unregister_driver(&driver); | |
1237 | } | |
1238 | ||
1239 | module_init(alsa_card_via82xx_init) | |
1240 | module_exit(alsa_card_via82xx_exit) |