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 | * | |
29 | * Sep. 2, 2004 Sasha Khapyorsky <sashak@smlink.com> | |
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 | ||
58 | static int index[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = -2}; /* Exclude the first card */ | |
59 | static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */ | |
60 | static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; /* Enable this card */ | |
61 | static int ac97_clock[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 48000}; | |
62 | ||
63 | module_param_array(index, int, NULL, 0444); | |
64 | MODULE_PARM_DESC(index, "Index value for VIA 82xx bridge."); | |
65 | module_param_array(id, charp, NULL, 0444); | |
66 | MODULE_PARM_DESC(id, "ID string for VIA 82xx bridge."); | |
67 | module_param_array(enable, bool, NULL, 0444); | |
68 | MODULE_PARM_DESC(enable, "Enable modem part of VIA 82xx bridge."); | |
69 | module_param_array(ac97_clock, int, NULL, 0444); | |
70 | MODULE_PARM_DESC(ac97_clock, "AC'97 codec clock (default 48000Hz)."); | |
71 | ||
72 | ||
73 | /* | |
74 | * Direct registers | |
75 | */ | |
76 | ||
77 | #define VIAREG(via, x) ((via)->port + VIA_REG_##x) | |
78 | #define VIADEV_REG(viadev, x) ((viadev)->port + VIA_REG_##x) | |
79 | ||
80 | /* common offsets */ | |
81 | #define VIA_REG_OFFSET_STATUS 0x00 /* byte - channel status */ | |
82 | #define VIA_REG_STAT_ACTIVE 0x80 /* RO */ | |
83 | #define VIA_REG_STAT_PAUSED 0x40 /* RO */ | |
84 | #define VIA_REG_STAT_TRIGGER_QUEUED 0x08 /* RO */ | |
85 | #define VIA_REG_STAT_STOPPED 0x04 /* RWC */ | |
86 | #define VIA_REG_STAT_EOL 0x02 /* RWC */ | |
87 | #define VIA_REG_STAT_FLAG 0x01 /* RWC */ | |
88 | #define VIA_REG_OFFSET_CONTROL 0x01 /* byte - channel control */ | |
89 | #define VIA_REG_CTRL_START 0x80 /* WO */ | |
90 | #define VIA_REG_CTRL_TERMINATE 0x40 /* WO */ | |
91 | #define VIA_REG_CTRL_AUTOSTART 0x20 | |
92 | #define VIA_REG_CTRL_PAUSE 0x08 /* RW */ | |
93 | #define VIA_REG_CTRL_INT_STOP 0x04 | |
94 | #define VIA_REG_CTRL_INT_EOL 0x02 | |
95 | #define VIA_REG_CTRL_INT_FLAG 0x01 | |
96 | #define VIA_REG_CTRL_RESET 0x01 /* RW - probably reset? undocumented */ | |
97 | #define VIA_REG_CTRL_INT (VIA_REG_CTRL_INT_FLAG | VIA_REG_CTRL_INT_EOL | VIA_REG_CTRL_AUTOSTART) | |
98 | #define VIA_REG_OFFSET_TYPE 0x02 /* byte - channel type (686 only) */ | |
99 | #define VIA_REG_TYPE_AUTOSTART 0x80 /* RW - autostart at EOL */ | |
100 | #define VIA_REG_TYPE_16BIT 0x20 /* RW */ | |
101 | #define VIA_REG_TYPE_STEREO 0x10 /* RW */ | |
102 | #define VIA_REG_TYPE_INT_LLINE 0x00 | |
103 | #define VIA_REG_TYPE_INT_LSAMPLE 0x04 | |
104 | #define VIA_REG_TYPE_INT_LESSONE 0x08 | |
105 | #define VIA_REG_TYPE_INT_MASK 0x0c | |
106 | #define VIA_REG_TYPE_INT_EOL 0x02 | |
107 | #define VIA_REG_TYPE_INT_FLAG 0x01 | |
108 | #define VIA_REG_OFFSET_TABLE_PTR 0x04 /* dword - channel table pointer */ | |
109 | #define VIA_REG_OFFSET_CURR_PTR 0x04 /* dword - channel current pointer */ | |
110 | #define VIA_REG_OFFSET_STOP_IDX 0x08 /* dword - stop index, channel type, sample rate */ | |
111 | #define VIA_REG_OFFSET_CURR_COUNT 0x0c /* dword - channel current count (24 bit) */ | |
112 | #define VIA_REG_OFFSET_CURR_INDEX 0x0f /* byte - channel current index (for via8233 only) */ | |
113 | ||
114 | #define DEFINE_VIA_REGSET(name,val) \ | |
115 | enum {\ | |
116 | VIA_REG_##name##_STATUS = (val),\ | |
117 | VIA_REG_##name##_CONTROL = (val) + 0x01,\ | |
118 | VIA_REG_##name##_TYPE = (val) + 0x02,\ | |
119 | VIA_REG_##name##_TABLE_PTR = (val) + 0x04,\ | |
120 | VIA_REG_##name##_CURR_PTR = (val) + 0x04,\ | |
121 | VIA_REG_##name##_STOP_IDX = (val) + 0x08,\ | |
122 | VIA_REG_##name##_CURR_COUNT = (val) + 0x0c,\ | |
123 | } | |
124 | ||
125 | /* modem block */ | |
126 | DEFINE_VIA_REGSET(MO, 0x40); | |
127 | DEFINE_VIA_REGSET(MI, 0x50); | |
128 | ||
129 | /* AC'97 */ | |
130 | #define VIA_REG_AC97 0x80 /* dword */ | |
131 | #define VIA_REG_AC97_CODEC_ID_MASK (3<<30) | |
132 | #define VIA_REG_AC97_CODEC_ID_SHIFT 30 | |
133 | #define VIA_REG_AC97_CODEC_ID_PRIMARY 0x00 | |
134 | #define VIA_REG_AC97_CODEC_ID_SECONDARY 0x01 | |
135 | #define VIA_REG_AC97_SECONDARY_VALID (1<<27) | |
136 | #define VIA_REG_AC97_PRIMARY_VALID (1<<25) | |
137 | #define VIA_REG_AC97_BUSY (1<<24) | |
138 | #define VIA_REG_AC97_READ (1<<23) | |
139 | #define VIA_REG_AC97_CMD_SHIFT 16 | |
140 | #define VIA_REG_AC97_CMD_MASK 0x7e | |
141 | #define VIA_REG_AC97_DATA_SHIFT 0 | |
142 | #define VIA_REG_AC97_DATA_MASK 0xffff | |
143 | ||
144 | #define VIA_REG_SGD_SHADOW 0x84 /* dword */ | |
145 | #define VIA_REG_SGD_STAT_PB_FLAG (1<<0) | |
146 | #define VIA_REG_SGD_STAT_CP_FLAG (1<<1) | |
147 | #define VIA_REG_SGD_STAT_FM_FLAG (1<<2) | |
148 | #define VIA_REG_SGD_STAT_PB_EOL (1<<4) | |
149 | #define VIA_REG_SGD_STAT_CP_EOL (1<<5) | |
150 | #define VIA_REG_SGD_STAT_FM_EOL (1<<6) | |
151 | #define VIA_REG_SGD_STAT_PB_STOP (1<<8) | |
152 | #define VIA_REG_SGD_STAT_CP_STOP (1<<9) | |
153 | #define VIA_REG_SGD_STAT_FM_STOP (1<<10) | |
154 | #define VIA_REG_SGD_STAT_PB_ACTIVE (1<<12) | |
155 | #define VIA_REG_SGD_STAT_CP_ACTIVE (1<<13) | |
156 | #define VIA_REG_SGD_STAT_FM_ACTIVE (1<<14) | |
157 | #define VIA_REG_SGD_STAT_MR_FLAG (1<<16) | |
158 | #define VIA_REG_SGD_STAT_MW_FLAG (1<<17) | |
159 | #define VIA_REG_SGD_STAT_MR_EOL (1<<20) | |
160 | #define VIA_REG_SGD_STAT_MW_EOL (1<<21) | |
161 | #define VIA_REG_SGD_STAT_MR_STOP (1<<24) | |
162 | #define VIA_REG_SGD_STAT_MW_STOP (1<<25) | |
163 | #define VIA_REG_SGD_STAT_MR_ACTIVE (1<<28) | |
164 | #define VIA_REG_SGD_STAT_MW_ACTIVE (1<<29) | |
165 | ||
166 | #define VIA_REG_GPI_STATUS 0x88 | |
167 | #define VIA_REG_GPI_INTR 0x8c | |
168 | ||
169 | #define VIA_TBL_BIT_FLAG 0x40000000 | |
170 | #define VIA_TBL_BIT_EOL 0x80000000 | |
171 | ||
172 | /* pci space */ | |
173 | #define VIA_ACLINK_STAT 0x40 | |
174 | #define VIA_ACLINK_C11_READY 0x20 | |
175 | #define VIA_ACLINK_C10_READY 0x10 | |
176 | #define VIA_ACLINK_C01_READY 0x04 /* secondary codec ready */ | |
177 | #define VIA_ACLINK_LOWPOWER 0x02 /* low-power state */ | |
178 | #define VIA_ACLINK_C00_READY 0x01 /* primary codec ready */ | |
179 | #define VIA_ACLINK_CTRL 0x41 | |
180 | #define VIA_ACLINK_CTRL_ENABLE 0x80 /* 0: disable, 1: enable */ | |
181 | #define VIA_ACLINK_CTRL_RESET 0x40 /* 0: assert, 1: de-assert */ | |
182 | #define VIA_ACLINK_CTRL_SYNC 0x20 /* 0: release SYNC, 1: force SYNC hi */ | |
183 | #define VIA_ACLINK_CTRL_SDO 0x10 /* 0: release SDO, 1: force SDO hi */ | |
184 | #define VIA_ACLINK_CTRL_VRA 0x08 /* 0: disable VRA, 1: enable VRA */ | |
185 | #define VIA_ACLINK_CTRL_PCM 0x04 /* 0: disable PCM, 1: enable PCM */ | |
186 | #define VIA_ACLINK_CTRL_FM 0x02 /* via686 only */ | |
187 | #define VIA_ACLINK_CTRL_SB 0x01 /* via686 only */ | |
188 | #define VIA_ACLINK_CTRL_INIT (VIA_ACLINK_CTRL_ENABLE|\ | |
189 | VIA_ACLINK_CTRL_RESET|\ | |
190 | VIA_ACLINK_CTRL_PCM) | |
191 | #define VIA_FUNC_ENABLE 0x42 | |
192 | #define VIA_FUNC_MIDI_PNP 0x80 /* FIXME: it's 0x40 in the datasheet! */ | |
193 | #define VIA_FUNC_MIDI_IRQMASK 0x40 /* FIXME: not documented! */ | |
194 | #define VIA_FUNC_RX2C_WRITE 0x20 | |
195 | #define VIA_FUNC_SB_FIFO_EMPTY 0x10 | |
196 | #define VIA_FUNC_ENABLE_GAME 0x08 | |
197 | #define VIA_FUNC_ENABLE_FM 0x04 | |
198 | #define VIA_FUNC_ENABLE_MIDI 0x02 | |
199 | #define VIA_FUNC_ENABLE_SB 0x01 | |
200 | #define VIA_PNP_CONTROL 0x43 | |
201 | #define VIA_MC97_CTRL 0x44 | |
202 | #define VIA_MC97_CTRL_ENABLE 0x80 | |
203 | #define VIA_MC97_CTRL_SECONDARY 0x40 | |
204 | #define VIA_MC97_CTRL_INIT (VIA_MC97_CTRL_ENABLE|\ | |
205 | VIA_MC97_CTRL_SECONDARY) | |
206 | ||
207 | ||
208 | typedef struct _snd_via82xx_modem via82xx_t; | |
209 | typedef struct via_dev viadev_t; | |
210 | ||
211 | /* | |
212 | * pcm stream | |
213 | */ | |
214 | ||
215 | struct snd_via_sg_table { | |
216 | unsigned int offset; | |
217 | unsigned int size; | |
218 | } ; | |
219 | ||
220 | #define VIA_TABLE_SIZE 255 | |
221 | ||
222 | struct via_dev { | |
223 | unsigned int reg_offset; | |
224 | unsigned long port; | |
225 | int direction; /* playback = 0, capture = 1 */ | |
226 | snd_pcm_substream_t *substream; | |
227 | int running; | |
228 | unsigned int tbl_entries; /* # descriptors */ | |
229 | struct snd_dma_buffer table; | |
230 | struct snd_via_sg_table *idx_table; | |
231 | /* for recovery from the unexpected pointer */ | |
232 | unsigned int lastpos; | |
233 | unsigned int bufsize; | |
234 | unsigned int bufsize2; | |
235 | }; | |
236 | ||
237 | enum { TYPE_CARD_VIA82XX_MODEM = 1 }; | |
238 | ||
239 | #define VIA_MAX_MODEM_DEVS 2 | |
240 | ||
241 | struct _snd_via82xx_modem { | |
242 | int irq; | |
243 | ||
244 | unsigned long port; | |
245 | ||
246 | unsigned int intr_mask; /* SGD_SHADOW mask to check interrupts */ | |
247 | ||
248 | struct pci_dev *pci; | |
249 | snd_card_t *card; | |
250 | ||
251 | unsigned int num_devs; | |
252 | unsigned int playback_devno, capture_devno; | |
253 | viadev_t devs[VIA_MAX_MODEM_DEVS]; | |
254 | ||
255 | snd_pcm_t *pcms[2]; | |
256 | ||
257 | ac97_bus_t *ac97_bus; | |
258 | ac97_t *ac97; | |
259 | unsigned int ac97_clock; | |
260 | unsigned int ac97_secondary; /* secondary AC'97 codec is present */ | |
261 | ||
262 | spinlock_t reg_lock; | |
263 | snd_info_entry_t *proc_entry; | |
264 | }; | |
265 | ||
266 | static struct pci_device_id snd_via82xx_modem_ids[] = { | |
267 | { 0x1106, 0x3068, PCI_ANY_ID, PCI_ANY_ID, 0, 0, TYPE_CARD_VIA82XX_MODEM, }, | |
268 | { 0, } | |
269 | }; | |
270 | ||
271 | MODULE_DEVICE_TABLE(pci, snd_via82xx_modem_ids); | |
272 | ||
273 | /* | |
274 | */ | |
275 | ||
276 | /* | |
277 | * allocate and initialize the descriptor buffers | |
278 | * periods = number of periods | |
279 | * fragsize = period size in bytes | |
280 | */ | |
281 | static int build_via_table(viadev_t *dev, snd_pcm_substream_t *substream, | |
282 | struct pci_dev *pci, | |
283 | unsigned int periods, unsigned int fragsize) | |
284 | { | |
285 | unsigned int i, idx, ofs, rest; | |
286 | via82xx_t *chip = snd_pcm_substream_chip(substream); | |
287 | struct snd_sg_buf *sgbuf = snd_pcm_substream_sgbuf(substream); | |
288 | ||
289 | if (dev->table.area == NULL) { | |
290 | /* the start of each lists must be aligned to 8 bytes, | |
291 | * but the kernel pages are much bigger, so we don't care | |
292 | */ | |
293 | if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(chip->pci), | |
294 | PAGE_ALIGN(VIA_TABLE_SIZE * 2 * 8), | |
295 | &dev->table) < 0) | |
296 | return -ENOMEM; | |
297 | } | |
298 | if (! dev->idx_table) { | |
299 | dev->idx_table = kmalloc(sizeof(*dev->idx_table) * VIA_TABLE_SIZE, GFP_KERNEL); | |
300 | if (! dev->idx_table) | |
301 | return -ENOMEM; | |
302 | } | |
303 | ||
304 | /* fill the entries */ | |
305 | idx = 0; | |
306 | ofs = 0; | |
307 | for (i = 0; i < periods; i++) { | |
308 | rest = fragsize; | |
309 | /* fill descriptors for a period. | |
310 | * a period can be split to several descriptors if it's | |
311 | * over page boundary. | |
312 | */ | |
313 | do { | |
314 | unsigned int r; | |
315 | unsigned int flag; | |
316 | ||
317 | if (idx >= VIA_TABLE_SIZE) { | |
318 | snd_printk(KERN_ERR "via82xx: too much table size!\n"); | |
319 | return -EINVAL; | |
320 | } | |
321 | ((u32 *)dev->table.area)[idx << 1] = cpu_to_le32((u32)snd_pcm_sgbuf_get_addr(sgbuf, ofs)); | |
322 | r = PAGE_SIZE - (ofs % PAGE_SIZE); | |
323 | if (rest < r) | |
324 | r = rest; | |
325 | rest -= r; | |
326 | if (! rest) { | |
327 | if (i == periods - 1) | |
328 | flag = VIA_TBL_BIT_EOL; /* buffer boundary */ | |
329 | else | |
330 | flag = VIA_TBL_BIT_FLAG; /* period boundary */ | |
331 | } else | |
332 | flag = 0; /* period continues to the next */ | |
333 | // printk("via: tbl %d: at %d size %d (rest %d)\n", idx, ofs, r, rest); | |
334 | ((u32 *)dev->table.area)[(idx<<1) + 1] = cpu_to_le32(r | flag); | |
335 | dev->idx_table[idx].offset = ofs; | |
336 | dev->idx_table[idx].size = r; | |
337 | ofs += r; | |
338 | idx++; | |
339 | } while (rest > 0); | |
340 | } | |
341 | dev->tbl_entries = idx; | |
342 | dev->bufsize = periods * fragsize; | |
343 | dev->bufsize2 = dev->bufsize / 2; | |
344 | return 0; | |
345 | } | |
346 | ||
347 | ||
348 | static int clean_via_table(viadev_t *dev, snd_pcm_substream_t *substream, | |
349 | struct pci_dev *pci) | |
350 | { | |
351 | if (dev->table.area) { | |
352 | snd_dma_free_pages(&dev->table); | |
353 | dev->table.area = NULL; | |
354 | } | |
4d572776 JJ |
355 | kfree(dev->idx_table); |
356 | dev->idx_table = NULL; | |
1da177e4 LT |
357 | return 0; |
358 | } | |
359 | ||
360 | /* | |
361 | * Basic I/O | |
362 | */ | |
363 | ||
364 | static inline unsigned int snd_via82xx_codec_xread(via82xx_t *chip) | |
365 | { | |
366 | return inl(VIAREG(chip, AC97)); | |
367 | } | |
368 | ||
369 | static inline void snd_via82xx_codec_xwrite(via82xx_t *chip, unsigned int val) | |
370 | { | |
371 | outl(val, VIAREG(chip, AC97)); | |
372 | } | |
373 | ||
374 | static int snd_via82xx_codec_ready(via82xx_t *chip, int secondary) | |
375 | { | |
376 | unsigned int timeout = 1000; /* 1ms */ | |
377 | unsigned int val; | |
378 | ||
379 | while (timeout-- > 0) { | |
380 | udelay(1); | |
381 | if (!((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY)) | |
382 | return val & 0xffff; | |
383 | } | |
384 | snd_printk(KERN_ERR "codec_ready: codec %i is not ready [0x%x]\n", secondary, snd_via82xx_codec_xread(chip)); | |
385 | return -EIO; | |
386 | } | |
387 | ||
388 | static int snd_via82xx_codec_valid(via82xx_t *chip, int secondary) | |
389 | { | |
390 | unsigned int timeout = 1000; /* 1ms */ | |
391 | unsigned int val, val1; | |
392 | unsigned int stat = !secondary ? VIA_REG_AC97_PRIMARY_VALID : | |
393 | VIA_REG_AC97_SECONDARY_VALID; | |
394 | ||
395 | while (timeout-- > 0) { | |
396 | val = snd_via82xx_codec_xread(chip); | |
397 | val1 = val & (VIA_REG_AC97_BUSY | stat); | |
398 | if (val1 == stat) | |
399 | return val & 0xffff; | |
400 | udelay(1); | |
401 | } | |
402 | return -EIO; | |
403 | } | |
404 | ||
405 | static void snd_via82xx_codec_wait(ac97_t *ac97) | |
406 | { | |
407 | via82xx_t *chip = ac97->private_data; | |
408 | int err; | |
409 | err = snd_via82xx_codec_ready(chip, ac97->num); | |
410 | /* here we need to wait fairly for long time.. */ | |
411 | set_current_state(TASK_UNINTERRUPTIBLE); | |
412 | schedule_timeout(HZ/2); | |
413 | } | |
414 | ||
415 | static void snd_via82xx_codec_write(ac97_t *ac97, | |
416 | unsigned short reg, | |
417 | unsigned short val) | |
418 | { | |
419 | via82xx_t *chip = ac97->private_data; | |
420 | unsigned int xval; | |
83a5b72a SK |
421 | if(reg == AC97_GPIO_STATUS) { |
422 | outl(val, VIAREG(chip, GPI_STATUS)); | |
423 | return; | |
424 | } | |
1da177e4 LT |
425 | xval = !ac97->num ? VIA_REG_AC97_CODEC_ID_PRIMARY : VIA_REG_AC97_CODEC_ID_SECONDARY; |
426 | xval <<= VIA_REG_AC97_CODEC_ID_SHIFT; | |
427 | xval |= reg << VIA_REG_AC97_CMD_SHIFT; | |
428 | xval |= val << VIA_REG_AC97_DATA_SHIFT; | |
429 | snd_via82xx_codec_xwrite(chip, xval); | |
430 | snd_via82xx_codec_ready(chip, ac97->num); | |
431 | } | |
432 | ||
433 | static unsigned short snd_via82xx_codec_read(ac97_t *ac97, unsigned short reg) | |
434 | { | |
435 | via82xx_t *chip = ac97->private_data; | |
436 | unsigned int xval, val = 0xffff; | |
437 | int again = 0; | |
438 | ||
439 | xval = ac97->num << VIA_REG_AC97_CODEC_ID_SHIFT; | |
440 | xval |= ac97->num ? VIA_REG_AC97_SECONDARY_VALID : VIA_REG_AC97_PRIMARY_VALID; | |
441 | xval |= VIA_REG_AC97_READ; | |
442 | xval |= (reg & 0x7f) << VIA_REG_AC97_CMD_SHIFT; | |
443 | while (1) { | |
444 | if (again++ > 3) { | |
445 | snd_printk(KERN_ERR "codec_read: codec %i is not valid [0x%x]\n", ac97->num, snd_via82xx_codec_xread(chip)); | |
446 | return 0xffff; | |
447 | } | |
448 | snd_via82xx_codec_xwrite(chip, xval); | |
449 | udelay (20); | |
450 | if (snd_via82xx_codec_valid(chip, ac97->num) >= 0) { | |
451 | udelay(25); | |
452 | val = snd_via82xx_codec_xread(chip); | |
453 | break; | |
454 | } | |
455 | } | |
456 | return val & 0xffff; | |
457 | } | |
458 | ||
459 | static void snd_via82xx_channel_reset(via82xx_t *chip, viadev_t *viadev) | |
460 | { | |
461 | outb(VIA_REG_CTRL_PAUSE | VIA_REG_CTRL_TERMINATE | VIA_REG_CTRL_RESET, | |
462 | VIADEV_REG(viadev, OFFSET_CONTROL)); | |
463 | inb(VIADEV_REG(viadev, OFFSET_CONTROL)); | |
464 | udelay(50); | |
465 | /* disable interrupts */ | |
466 | outb(0x00, VIADEV_REG(viadev, OFFSET_CONTROL)); | |
467 | /* clear interrupts */ | |
468 | outb(0x03, VIADEV_REG(viadev, OFFSET_STATUS)); | |
469 | outb(0x00, VIADEV_REG(viadev, OFFSET_TYPE)); /* for via686 */ | |
470 | // outl(0, VIADEV_REG(viadev, OFFSET_CURR_PTR)); | |
471 | viadev->lastpos = 0; | |
472 | } | |
473 | ||
474 | ||
475 | /* | |
476 | * Interrupt handler | |
477 | */ | |
478 | ||
479 | static irqreturn_t snd_via82xx_interrupt(int irq, void *dev_id, struct pt_regs *regs) | |
480 | { | |
481 | via82xx_t *chip = dev_id; | |
482 | unsigned int status; | |
483 | unsigned int i; | |
484 | ||
485 | status = inl(VIAREG(chip, SGD_SHADOW)); | |
486 | if (! (status & chip->intr_mask)) { | |
487 | return IRQ_NONE; | |
488 | } | |
489 | // _skip_sgd: | |
490 | ||
491 | /* check status for each stream */ | |
492 | spin_lock(&chip->reg_lock); | |
493 | for (i = 0; i < chip->num_devs; i++) { | |
494 | viadev_t *viadev = &chip->devs[i]; | |
495 | unsigned char c_status = inb(VIADEV_REG(viadev, OFFSET_STATUS)); | |
496 | c_status &= (VIA_REG_STAT_EOL|VIA_REG_STAT_FLAG|VIA_REG_STAT_STOPPED); | |
497 | if (! c_status) | |
498 | continue; | |
499 | if (viadev->substream && viadev->running) { | |
500 | spin_unlock(&chip->reg_lock); | |
501 | snd_pcm_period_elapsed(viadev->substream); | |
502 | spin_lock(&chip->reg_lock); | |
503 | } | |
504 | outb(c_status, VIADEV_REG(viadev, OFFSET_STATUS)); /* ack */ | |
505 | } | |
506 | spin_unlock(&chip->reg_lock); | |
507 | return IRQ_HANDLED; | |
508 | } | |
509 | ||
510 | /* | |
511 | * PCM callbacks | |
512 | */ | |
513 | ||
514 | /* | |
515 | * trigger callback | |
516 | */ | |
517 | static int snd_via82xx_pcm_trigger(snd_pcm_substream_t * substream, int cmd) | |
518 | { | |
519 | via82xx_t *chip = snd_pcm_substream_chip(substream); | |
520 | viadev_t *viadev = (viadev_t *)substream->runtime->private_data; | |
521 | unsigned char val = 0; | |
522 | ||
523 | switch (cmd) { | |
524 | case SNDRV_PCM_TRIGGER_START: | |
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) \ | |
557 | ((pos) < viadev->lastpos && ((pos) >= viadev->bufsize2 || viadev->lastpos < viadev->bufsize2)) | |
558 | ||
559 | static inline unsigned int calc_linear_pos(viadev_t *viadev, unsigned int idx, unsigned int count) | |
560 | { | |
561 | unsigned int size, res; | |
562 | ||
563 | size = viadev->idx_table[idx].size; | |
564 | res = viadev->idx_table[idx].offset + size - count; | |
565 | ||
566 | /* check the validity of the calculated position */ | |
567 | if (size < count) { | |
568 | snd_printd(KERN_ERR "invalid via82xx_cur_ptr (size = %d, count = %d)\n", (int)size, (int)count); | |
569 | res = viadev->lastpos; | |
570 | } else if (check_invalid_pos(viadev, res)) { | |
571 | #ifdef POINTER_DEBUG | |
572 | printk("fail: idx = %i/%i, lastpos = 0x%x, bufsize2 = 0x%x, offsize = 0x%x, size = 0x%x, count = 0x%x\n", idx, viadev->tbl_entries, viadev->lastpos, viadev->bufsize2, viadev->idx_table[idx].offset, viadev->idx_table[idx].size, count); | |
573 | #endif | |
574 | if (count && size < count) { | |
575 | snd_printd(KERN_ERR "invalid via82xx_cur_ptr, using last valid pointer\n"); | |
576 | res = viadev->lastpos; | |
577 | } else { | |
578 | if (! count) | |
579 | /* bogus count 0 on the DMA boundary? */ | |
580 | res = viadev->idx_table[idx].offset; | |
581 | else | |
582 | /* count register returns full size when end of buffer is reached */ | |
583 | res = viadev->idx_table[idx].offset + size; | |
584 | if (check_invalid_pos(viadev, res)) { | |
585 | snd_printd(KERN_ERR "invalid via82xx_cur_ptr (2), using last valid pointer\n"); | |
586 | res = viadev->lastpos; | |
587 | } | |
588 | } | |
589 | } | |
590 | viadev->lastpos = res; /* remember the last position */ | |
591 | if (res >= viadev->bufsize) | |
592 | res -= viadev->bufsize; | |
593 | return res; | |
594 | } | |
595 | ||
596 | /* | |
597 | * get the current pointer on via686 | |
598 | */ | |
599 | static snd_pcm_uframes_t snd_via686_pcm_pointer(snd_pcm_substream_t *substream) | |
600 | { | |
601 | via82xx_t *chip = snd_pcm_substream_chip(substream); | |
602 | viadev_t *viadev = (viadev_t *)substream->runtime->private_data; | |
603 | unsigned int idx, ptr, count, res; | |
604 | ||
605 | snd_assert(viadev->tbl_entries, return 0); | |
606 | if (!(inb(VIADEV_REG(viadev, OFFSET_STATUS)) & VIA_REG_STAT_ACTIVE)) | |
607 | return 0; | |
608 | ||
609 | spin_lock(&chip->reg_lock); | |
610 | count = inl(VIADEV_REG(viadev, OFFSET_CURR_COUNT)) & 0xffffff; | |
611 | /* The via686a does not have the current index register, | |
612 | * so we need to calculate the index from CURR_PTR. | |
613 | */ | |
614 | ptr = inl(VIADEV_REG(viadev, OFFSET_CURR_PTR)); | |
615 | if (ptr <= (unsigned int)viadev->table.addr) | |
616 | idx = 0; | |
617 | else /* CURR_PTR holds the address + 8 */ | |
618 | idx = ((ptr - (unsigned int)viadev->table.addr) / 8 - 1) % viadev->tbl_entries; | |
619 | res = calc_linear_pos(viadev, idx, count); | |
620 | spin_unlock(&chip->reg_lock); | |
621 | ||
622 | return bytes_to_frames(substream->runtime, res); | |
623 | } | |
624 | ||
625 | /* | |
626 | * hw_params callback: | |
627 | * allocate the buffer and build up the buffer description table | |
628 | */ | |
629 | static int snd_via82xx_hw_params(snd_pcm_substream_t * substream, | |
630 | snd_pcm_hw_params_t * hw_params) | |
631 | { | |
632 | via82xx_t *chip = snd_pcm_substream_chip(substream); | |
633 | viadev_t *viadev = (viadev_t *)substream->runtime->private_data; | |
634 | int err; | |
635 | ||
636 | err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params)); | |
637 | if (err < 0) | |
638 | return err; | |
639 | err = build_via_table(viadev, substream, chip->pci, | |
640 | params_periods(hw_params), | |
641 | params_period_bytes(hw_params)); | |
642 | if (err < 0) | |
643 | return err; | |
644 | ||
645 | snd_ac97_write(chip->ac97, AC97_LINE1_RATE, params_rate(hw_params)); | |
646 | snd_ac97_write(chip->ac97, AC97_LINE1_LEVEL, 0); | |
647 | ||
648 | return 0; | |
649 | } | |
650 | ||
651 | /* | |
652 | * hw_free callback: | |
653 | * clean up the buffer description table and release the buffer | |
654 | */ | |
655 | static int snd_via82xx_hw_free(snd_pcm_substream_t * substream) | |
656 | { | |
657 | via82xx_t *chip = snd_pcm_substream_chip(substream); | |
658 | viadev_t *viadev = (viadev_t *)substream->runtime->private_data; | |
659 | ||
660 | clean_via_table(viadev, substream, chip->pci); | |
661 | snd_pcm_lib_free_pages(substream); | |
662 | return 0; | |
663 | } | |
664 | ||
665 | ||
666 | /* | |
667 | * set up the table pointer | |
668 | */ | |
669 | static void snd_via82xx_set_table_ptr(via82xx_t *chip, viadev_t *viadev) | |
670 | { | |
671 | snd_via82xx_codec_ready(chip, chip->ac97_secondary); | |
672 | outl((u32)viadev->table.addr, VIADEV_REG(viadev, OFFSET_TABLE_PTR)); | |
673 | udelay(20); | |
674 | snd_via82xx_codec_ready(chip, chip->ac97_secondary); | |
675 | } | |
676 | ||
677 | /* | |
678 | * prepare callback for playback and capture | |
679 | */ | |
680 | static int snd_via82xx_pcm_prepare(snd_pcm_substream_t *substream) | |
681 | { | |
682 | via82xx_t *chip = snd_pcm_substream_chip(substream); | |
683 | viadev_t *viadev = (viadev_t *)substream->runtime->private_data; | |
684 | ||
685 | snd_via82xx_channel_reset(chip, viadev); | |
686 | /* this must be set after channel_reset */ | |
687 | snd_via82xx_set_table_ptr(chip, viadev); | |
688 | outb(VIA_REG_TYPE_AUTOSTART|VIA_REG_TYPE_INT_EOL|VIA_REG_TYPE_INT_FLAG, | |
689 | VIADEV_REG(viadev, OFFSET_TYPE)); | |
690 | return 0; | |
691 | } | |
692 | ||
693 | /* | |
694 | * pcm hardware definition, identical for both playback and capture | |
695 | */ | |
696 | static snd_pcm_hardware_t snd_via82xx_hw = | |
697 | { | |
698 | .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED | | |
699 | SNDRV_PCM_INFO_BLOCK_TRANSFER | | |
700 | SNDRV_PCM_INFO_MMAP_VALID | | |
701 | SNDRV_PCM_INFO_RESUME | | |
702 | SNDRV_PCM_INFO_PAUSE), | |
703 | .formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE, | |
704 | .rates = SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_KNOT, | |
705 | .rate_min = 8000, | |
706 | .rate_max = 16000, | |
707 | .channels_min = 1, | |
708 | .channels_max = 1, | |
709 | .buffer_bytes_max = 128 * 1024, | |
710 | .period_bytes_min = 32, | |
711 | .period_bytes_max = 128 * 1024, | |
712 | .periods_min = 2, | |
713 | .periods_max = VIA_TABLE_SIZE / 2, | |
714 | .fifo_size = 0, | |
715 | }; | |
716 | ||
717 | ||
718 | /* | |
719 | * open callback skeleton | |
720 | */ | |
721 | static int snd_via82xx_modem_pcm_open(via82xx_t *chip, viadev_t *viadev, snd_pcm_substream_t * substream) | |
722 | { | |
723 | snd_pcm_runtime_t *runtime = substream->runtime; | |
724 | int err; | |
725 | static unsigned int rates[] = { 8000, 9600, 12000, 16000 }; | |
726 | static snd_pcm_hw_constraint_list_t hw_constraints_rates = { | |
727 | .count = ARRAY_SIZE(rates), | |
728 | .list = rates, | |
729 | .mask = 0, | |
730 | }; | |
731 | ||
732 | runtime->hw = snd_via82xx_hw; | |
733 | ||
734 | if ((err = snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, &hw_constraints_rates)) < 0) | |
735 | return err; | |
736 | ||
737 | /* we may remove following constaint when we modify table entries | |
738 | in interrupt */ | |
739 | if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0) | |
740 | return err; | |
741 | ||
742 | runtime->private_data = viadev; | |
743 | viadev->substream = substream; | |
744 | ||
745 | return 0; | |
746 | } | |
747 | ||
748 | ||
749 | /* | |
750 | * open callback for playback | |
751 | */ | |
752 | static int snd_via82xx_playback_open(snd_pcm_substream_t * substream) | |
753 | { | |
754 | via82xx_t *chip = snd_pcm_substream_chip(substream); | |
755 | viadev_t *viadev = &chip->devs[chip->playback_devno + substream->number]; | |
756 | ||
757 | return snd_via82xx_modem_pcm_open(chip, viadev, substream); | |
758 | } | |
759 | ||
760 | /* | |
761 | * open callback for capture | |
762 | */ | |
763 | static int snd_via82xx_capture_open(snd_pcm_substream_t * substream) | |
764 | { | |
765 | via82xx_t *chip = snd_pcm_substream_chip(substream); | |
766 | viadev_t *viadev = &chip->devs[chip->capture_devno + substream->pcm->device]; | |
767 | ||
768 | return snd_via82xx_modem_pcm_open(chip, viadev, substream); | |
769 | } | |
770 | ||
771 | /* | |
772 | * close callback | |
773 | */ | |
774 | static int snd_via82xx_pcm_close(snd_pcm_substream_t * substream) | |
775 | { | |
776 | viadev_t *viadev = (viadev_t *)substream->runtime->private_data; | |
777 | ||
778 | viadev->substream = NULL; | |
779 | return 0; | |
780 | } | |
781 | ||
782 | ||
783 | /* via686 playback callbacks */ | |
784 | static snd_pcm_ops_t snd_via686_playback_ops = { | |
785 | .open = snd_via82xx_playback_open, | |
786 | .close = snd_via82xx_pcm_close, | |
787 | .ioctl = snd_pcm_lib_ioctl, | |
788 | .hw_params = snd_via82xx_hw_params, | |
789 | .hw_free = snd_via82xx_hw_free, | |
790 | .prepare = snd_via82xx_pcm_prepare, | |
83a5b72a | 791 | .trigger = snd_via82xx_pcm_trigger, |
1da177e4 LT |
792 | .pointer = snd_via686_pcm_pointer, |
793 | .page = snd_pcm_sgbuf_ops_page, | |
794 | }; | |
795 | ||
796 | /* via686 capture callbacks */ | |
797 | static snd_pcm_ops_t snd_via686_capture_ops = { | |
798 | .open = snd_via82xx_capture_open, | |
799 | .close = snd_via82xx_pcm_close, | |
800 | .ioctl = snd_pcm_lib_ioctl, | |
801 | .hw_params = snd_via82xx_hw_params, | |
802 | .hw_free = snd_via82xx_hw_free, | |
803 | .prepare = snd_via82xx_pcm_prepare, | |
83a5b72a | 804 | .trigger = snd_via82xx_pcm_trigger, |
1da177e4 LT |
805 | .pointer = snd_via686_pcm_pointer, |
806 | .page = snd_pcm_sgbuf_ops_page, | |
807 | }; | |
808 | ||
809 | ||
810 | static void init_viadev(via82xx_t *chip, int idx, unsigned int reg_offset, int direction) | |
811 | { | |
812 | chip->devs[idx].reg_offset = reg_offset; | |
813 | chip->devs[idx].direction = direction; | |
814 | chip->devs[idx].port = chip->port + reg_offset; | |
815 | } | |
816 | ||
817 | /* | |
818 | * create a pcm instance for via686a/b | |
819 | */ | |
820 | static int __devinit snd_via686_pcm_new(via82xx_t *chip) | |
821 | { | |
822 | snd_pcm_t *pcm; | |
823 | int err; | |
824 | ||
825 | chip->playback_devno = 0; | |
826 | chip->capture_devno = 1; | |
827 | chip->num_devs = 2; | |
828 | chip->intr_mask = 0x330000; /* FLAGS | EOL for MR, MW */ | |
829 | ||
830 | err = snd_pcm_new(chip->card, chip->card->shortname, 0, 1, 1, &pcm); | |
831 | if (err < 0) | |
832 | return err; | |
833 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via686_playback_ops); | |
834 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via686_capture_ops); | |
835 | pcm->private_data = chip; | |
836 | strcpy(pcm->name, chip->card->shortname); | |
837 | chip->pcms[0] = pcm; | |
838 | init_viadev(chip, 0, VIA_REG_MO_STATUS, 0); | |
839 | init_viadev(chip, 1, VIA_REG_MI_STATUS, 1); | |
840 | ||
841 | if ((err = snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG, | |
842 | snd_dma_pci_data(chip->pci), 64*1024, 128*1024)) < 0) | |
843 | return err; | |
844 | ||
845 | return 0; | |
846 | } | |
847 | ||
848 | ||
849 | /* | |
850 | * Mixer part | |
851 | */ | |
852 | ||
853 | ||
854 | static void snd_via82xx_mixer_free_ac97_bus(ac97_bus_t *bus) | |
855 | { | |
856 | via82xx_t *chip = bus->private_data; | |
857 | chip->ac97_bus = NULL; | |
858 | } | |
859 | ||
860 | static void snd_via82xx_mixer_free_ac97(ac97_t *ac97) | |
861 | { | |
862 | via82xx_t *chip = ac97->private_data; | |
863 | chip->ac97 = NULL; | |
864 | } | |
865 | ||
866 | ||
867 | static int __devinit snd_via82xx_mixer_new(via82xx_t *chip) | |
868 | { | |
869 | ac97_template_t ac97; | |
870 | int err; | |
871 | static ac97_bus_ops_t ops = { | |
872 | .write = snd_via82xx_codec_write, | |
873 | .read = snd_via82xx_codec_read, | |
874 | .wait = snd_via82xx_codec_wait, | |
875 | }; | |
876 | ||
877 | if ((err = snd_ac97_bus(chip->card, 0, &ops, chip, &chip->ac97_bus)) < 0) | |
878 | return err; | |
879 | chip->ac97_bus->private_free = snd_via82xx_mixer_free_ac97_bus; | |
880 | chip->ac97_bus->clock = chip->ac97_clock; | |
881 | chip->ac97_bus->shared_type = AC97_SHARED_TYPE_VIA; | |
882 | ||
883 | memset(&ac97, 0, sizeof(ac97)); | |
884 | ac97.private_data = chip; | |
885 | ac97.private_free = snd_via82xx_mixer_free_ac97; | |
886 | ac97.pci = chip->pci; | |
887 | ac97.scaps = AC97_SCAP_SKIP_AUDIO; | |
888 | ac97.num = chip->ac97_secondary; | |
889 | ||
890 | if ((err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97)) < 0) | |
891 | return err; | |
892 | ||
893 | return 0; | |
894 | } | |
895 | ||
896 | ||
897 | /* | |
898 | * proc interface | |
899 | */ | |
900 | static void snd_via82xx_proc_read(snd_info_entry_t *entry, snd_info_buffer_t *buffer) | |
901 | { | |
902 | via82xx_t *chip = entry->private_data; | |
903 | int i; | |
904 | ||
905 | snd_iprintf(buffer, "%s\n\n", chip->card->longname); | |
906 | for (i = 0; i < 0xa0; i += 4) { | |
907 | snd_iprintf(buffer, "%02x: %08x\n", i, inl(chip->port + i)); | |
908 | } | |
909 | } | |
910 | ||
911 | static void __devinit snd_via82xx_proc_init(via82xx_t *chip) | |
912 | { | |
913 | snd_info_entry_t *entry; | |
914 | ||
915 | if (! snd_card_proc_new(chip->card, "via82xx", &entry)) | |
916 | snd_info_set_text_ops(entry, chip, 1024, snd_via82xx_proc_read); | |
917 | } | |
918 | ||
919 | /* | |
920 | * | |
921 | */ | |
922 | ||
58c1f8ac | 923 | static int snd_via82xx_chip_init(via82xx_t *chip) |
1da177e4 LT |
924 | { |
925 | unsigned int val; | |
926 | int max_count; | |
927 | unsigned char pval; | |
928 | ||
929 | pci_read_config_byte(chip->pci, VIA_MC97_CTRL, &pval); | |
930 | if((pval & VIA_MC97_CTRL_INIT) != VIA_MC97_CTRL_INIT) { | |
931 | pci_write_config_byte(chip->pci, 0x44, pval|VIA_MC97_CTRL_INIT); | |
932 | udelay(100); | |
933 | } | |
934 | ||
935 | pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval); | |
936 | if (! (pval & VIA_ACLINK_C00_READY)) { /* codec not ready? */ | |
937 | /* deassert ACLink reset, force SYNC */ | |
938 | pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, | |
939 | VIA_ACLINK_CTRL_ENABLE | | |
940 | VIA_ACLINK_CTRL_RESET | | |
941 | VIA_ACLINK_CTRL_SYNC); | |
942 | udelay(100); | |
943 | #if 1 /* FIXME: should we do full reset here for all chip models? */ | |
944 | pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, 0x00); | |
945 | udelay(100); | |
946 | #else | |
947 | /* deassert ACLink reset, force SYNC (warm AC'97 reset) */ | |
948 | pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, | |
949 | VIA_ACLINK_CTRL_RESET|VIA_ACLINK_CTRL_SYNC); | |
950 | udelay(2); | |
951 | #endif | |
952 | /* ACLink on, deassert ACLink reset, VSR, SGD data out */ | |
953 | pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT); | |
954 | udelay(100); | |
955 | } | |
956 | ||
957 | pci_read_config_byte(chip->pci, VIA_ACLINK_CTRL, &pval); | |
958 | if ((pval & VIA_ACLINK_CTRL_INIT) != VIA_ACLINK_CTRL_INIT) { | |
959 | /* ACLink on, deassert ACLink reset, VSR, SGD data out */ | |
960 | pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT); | |
961 | udelay(100); | |
962 | } | |
963 | ||
964 | /* wait until codec ready */ | |
965 | max_count = ((3 * HZ) / 4) + 1; | |
966 | do { | |
967 | pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval); | |
968 | if (pval & VIA_ACLINK_C00_READY) /* primary codec ready */ | |
969 | break; | |
970 | set_current_state(TASK_UNINTERRUPTIBLE); | |
971 | schedule_timeout(1); | |
972 | } while (--max_count > 0); | |
973 | ||
974 | if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY) | |
975 | snd_printk("AC'97 codec is not ready [0x%x]\n", val); | |
976 | ||
977 | snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ | | |
978 | VIA_REG_AC97_SECONDARY_VALID | | |
979 | (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT)); | |
980 | max_count = ((3 * HZ) / 4) + 1; | |
981 | snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ | | |
982 | VIA_REG_AC97_SECONDARY_VALID | | |
983 | (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT)); | |
984 | do { | |
985 | if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_SECONDARY_VALID) { | |
986 | chip->ac97_secondary = 1; | |
987 | goto __ac97_ok2; | |
988 | } | |
989 | set_current_state(TASK_INTERRUPTIBLE); | |
990 | schedule_timeout(1); | |
991 | } while (--max_count > 0); | |
992 | /* This is ok, the most of motherboards have only one codec */ | |
993 | ||
994 | __ac97_ok2: | |
995 | ||
996 | /* route FM trap to IRQ, disable FM trap */ | |
997 | // pci_write_config_byte(chip->pci, VIA_FM_NMI_CTRL, 0); | |
998 | /* disable all GPI interrupts */ | |
999 | outl(0, VIAREG(chip, GPI_INTR)); | |
1000 | ||
1001 | return 0; | |
1002 | } | |
1003 | ||
1004 | #ifdef CONFIG_PM | |
1005 | /* | |
1006 | * power management | |
1007 | */ | |
1008 | static int snd_via82xx_suspend(snd_card_t *card, pm_message_t state) | |
1009 | { | |
1010 | via82xx_t *chip = card->pm_private_data; | |
1011 | int i; | |
1012 | ||
1013 | for (i = 0; i < 2; i++) | |
1014 | if (chip->pcms[i]) | |
1015 | snd_pcm_suspend_all(chip->pcms[i]); | |
1016 | for (i = 0; i < chip->num_devs; i++) | |
1017 | snd_via82xx_channel_reset(chip, &chip->devs[i]); | |
1018 | synchronize_irq(chip->irq); | |
1019 | snd_ac97_suspend(chip->ac97); | |
1020 | pci_set_power_state(chip->pci, 3); | |
1021 | pci_disable_device(chip->pci); | |
1022 | return 0; | |
1023 | } | |
1024 | ||
1025 | static int snd_via82xx_resume(snd_card_t *card) | |
1026 | { | |
1027 | via82xx_t *chip = card->pm_private_data; | |
1028 | int i; | |
1029 | ||
1030 | pci_enable_device(chip->pci); | |
1031 | pci_set_power_state(chip->pci, 0); | |
1032 | pci_set_master(chip->pci); | |
1033 | ||
1034 | snd_via82xx_chip_init(chip); | |
1035 | ||
1036 | snd_ac97_resume(chip->ac97); | |
1037 | ||
1038 | for (i = 0; i < chip->num_devs; i++) | |
1039 | snd_via82xx_channel_reset(chip, &chip->devs[i]); | |
1040 | ||
1041 | return 0; | |
1042 | } | |
1043 | #endif /* CONFIG_PM */ | |
1044 | ||
1045 | static int snd_via82xx_free(via82xx_t *chip) | |
1046 | { | |
1047 | unsigned int i; | |
1048 | ||
1049 | if (chip->irq < 0) | |
1050 | goto __end_hw; | |
1051 | /* disable interrupts */ | |
1052 | for (i = 0; i < chip->num_devs; i++) | |
1053 | snd_via82xx_channel_reset(chip, &chip->devs[i]); | |
1054 | synchronize_irq(chip->irq); | |
1055 | __end_hw: | |
1056 | if (chip->irq >= 0) | |
1057 | free_irq(chip->irq, (void *)chip); | |
1058 | pci_release_regions(chip->pci); | |
1059 | pci_disable_device(chip->pci); | |
1060 | kfree(chip); | |
1061 | return 0; | |
1062 | } | |
1063 | ||
1064 | static int snd_via82xx_dev_free(snd_device_t *device) | |
1065 | { | |
1066 | via82xx_t *chip = device->device_data; | |
1067 | return snd_via82xx_free(chip); | |
1068 | } | |
1069 | ||
1070 | static int __devinit snd_via82xx_create(snd_card_t * card, | |
1071 | struct pci_dev *pci, | |
1072 | int chip_type, | |
1073 | int revision, | |
1074 | unsigned int ac97_clock, | |
1075 | via82xx_t ** r_via) | |
1076 | { | |
1077 | via82xx_t *chip; | |
1078 | int err; | |
1079 | static snd_device_ops_t ops = { | |
1080 | .dev_free = snd_via82xx_dev_free, | |
1081 | }; | |
1082 | ||
1083 | if ((err = pci_enable_device(pci)) < 0) | |
1084 | return err; | |
1085 | ||
1086 | if ((chip = kcalloc(1, sizeof(*chip), GFP_KERNEL)) == NULL) { | |
1087 | pci_disable_device(pci); | |
1088 | return -ENOMEM; | |
1089 | } | |
1090 | ||
1091 | spin_lock_init(&chip->reg_lock); | |
1092 | chip->card = card; | |
1093 | chip->pci = pci; | |
1094 | chip->irq = -1; | |
1095 | ||
1096 | if ((err = pci_request_regions(pci, card->driver)) < 0) { | |
1097 | kfree(chip); | |
1098 | pci_disable_device(pci); | |
1099 | return err; | |
1100 | } | |
1101 | chip->port = pci_resource_start(pci, 0); | |
1102 | if (request_irq(pci->irq, snd_via82xx_interrupt, SA_INTERRUPT|SA_SHIRQ, | |
1103 | card->driver, (void *)chip)) { | |
1104 | snd_printk("unable to grab IRQ %d\n", pci->irq); | |
1105 | snd_via82xx_free(chip); | |
1106 | return -EBUSY; | |
1107 | } | |
1108 | chip->irq = pci->irq; | |
1109 | if (ac97_clock >= 8000 && ac97_clock <= 48000) | |
1110 | chip->ac97_clock = ac97_clock; | |
1111 | synchronize_irq(chip->irq); | |
1112 | ||
1113 | if ((err = snd_via82xx_chip_init(chip)) < 0) { | |
1114 | snd_via82xx_free(chip); | |
1115 | return err; | |
1116 | } | |
1117 | ||
1118 | if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) { | |
1119 | snd_via82xx_free(chip); | |
1120 | return err; | |
1121 | } | |
1122 | ||
1123 | /* The 8233 ac97 controller does not implement the master bit | |
1124 | * in the pci command register. IMHO this is a violation of the PCI spec. | |
1125 | * We call pci_set_master here because it does not hurt. */ | |
1126 | pci_set_master(pci); | |
1127 | ||
1128 | snd_card_set_dev(card, &pci->dev); | |
1129 | ||
1130 | *r_via = chip; | |
1131 | return 0; | |
1132 | } | |
1133 | ||
1134 | ||
1135 | static int __devinit snd_via82xx_probe(struct pci_dev *pci, | |
1136 | const struct pci_device_id *pci_id) | |
1137 | { | |
1138 | static int dev; | |
1139 | snd_card_t *card; | |
1140 | via82xx_t *chip; | |
1141 | unsigned char revision; | |
1142 | int chip_type = 0, card_type; | |
1143 | unsigned int i; | |
1144 | int err; | |
1145 | ||
1146 | if (dev >= SNDRV_CARDS) | |
1147 | return -ENODEV; | |
1148 | if (!enable[dev]) { | |
1149 | dev++; | |
1150 | return -ENOENT; | |
1151 | } | |
1152 | ||
1153 | card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0); | |
1154 | if (card == NULL) | |
1155 | return -ENOMEM; | |
1156 | ||
1157 | card_type = pci_id->driver_data; | |
1158 | pci_read_config_byte(pci, PCI_REVISION_ID, &revision); | |
1159 | switch (card_type) { | |
1160 | case TYPE_CARD_VIA82XX_MODEM: | |
1161 | strcpy(card->driver, "VIA82XX-MODEM"); | |
1162 | sprintf(card->shortname, "VIA 82XX modem"); | |
1163 | break; | |
1164 | default: | |
1165 | snd_printk(KERN_ERR "invalid card type %d\n", card_type); | |
1166 | err = -EINVAL; | |
1167 | goto __error; | |
1168 | } | |
1169 | ||
1170 | if ((err = snd_via82xx_create(card, pci, chip_type, revision, ac97_clock[dev], &chip)) < 0) | |
1171 | goto __error; | |
1172 | if ((err = snd_via82xx_mixer_new(chip)) < 0) | |
1173 | goto __error; | |
1174 | ||
1175 | if ((err = snd_via686_pcm_new(chip)) < 0 ) | |
1176 | goto __error; | |
1177 | ||
1178 | snd_card_set_pm_callback(card, snd_via82xx_suspend, snd_via82xx_resume, chip); | |
1179 | ||
1180 | /* disable interrupts */ | |
1181 | for (i = 0; i < chip->num_devs; i++) | |
1182 | snd_via82xx_channel_reset(chip, &chip->devs[i]); | |
1183 | ||
1184 | sprintf(card->longname, "%s at 0x%lx, irq %d", | |
1185 | card->shortname, chip->port, chip->irq); | |
1186 | ||
1187 | snd_via82xx_proc_init(chip); | |
1188 | ||
1189 | if ((err = snd_card_register(card)) < 0) { | |
1190 | snd_card_free(card); | |
1191 | return err; | |
1192 | } | |
1193 | pci_set_drvdata(pci, card); | |
1194 | dev++; | |
1195 | return 0; | |
1196 | ||
1197 | __error: | |
1198 | snd_card_free(card); | |
1199 | return err; | |
1200 | } | |
1201 | ||
1202 | static void __devexit snd_via82xx_remove(struct pci_dev *pci) | |
1203 | { | |
1204 | snd_card_free(pci_get_drvdata(pci)); | |
1205 | pci_set_drvdata(pci, NULL); | |
1206 | } | |
1207 | ||
1208 | static struct pci_driver driver = { | |
1209 | .name = "VIA 82xx Modem", | |
1210 | .id_table = snd_via82xx_modem_ids, | |
1211 | .probe = snd_via82xx_probe, | |
1212 | .remove = __devexit_p(snd_via82xx_remove), | |
1213 | SND_PCI_PM_CALLBACKS | |
1214 | }; | |
1215 | ||
1216 | static int __init alsa_card_via82xx_init(void) | |
1217 | { | |
01d25d46 | 1218 | return pci_register_driver(&driver); |
1da177e4 LT |
1219 | } |
1220 | ||
1221 | static void __exit alsa_card_via82xx_exit(void) | |
1222 | { | |
1223 | pci_unregister_driver(&driver); | |
1224 | } | |
1225 | ||
1226 | module_init(alsa_card_via82xx_init) | |
1227 | module_exit(alsa_card_via82xx_exit) |