Root/
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@perex.cz> |
7 | * Tjeerd.Mulder <Tjeerd.Mulder@fujitsu-siemens.com> |
8 | * 2002 Takashi Iwai <tiwai@suse.de> |
9 | * |
10 | * This program is free software; you can redistribute it and/or modify |
11 | * it under the terms of the GNU General Public License as published by |
12 | * the Free Software Foundation; either version 2 of the License, or |
13 | * (at your option) any later version. |
14 | * |
15 | * This program is distributed in the hope that it will be useful, |
16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
18 | * GNU General Public License for more details. |
19 | * |
20 | * You should have received a copy of the GNU General Public License |
21 | * along with this program; if not, write to the Free Software |
22 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
23 | * |
24 | */ |
25 | |
26 | /* |
27 | * Changes: |
28 | * |
29 | * Sep. 2, 2004 Sasha Khapyorsky <sashak@alsa-project.org> |
30 | * Modified from original audio driver 'via82xx.c' to support AC97 |
31 | * modems. |
32 | */ |
33 | |
34 | #include <asm/io.h> |
35 | #include <linux/delay.h> |
36 | #include <linux/interrupt.h> |
37 | #include <linux/init.h> |
38 | #include <linux/pci.h> |
39 | #include <linux/slab.h> |
40 | #include <linux/module.h> |
41 | #include <sound/core.h> |
42 | #include <sound/pcm.h> |
43 | #include <sound/pcm_params.h> |
44 | #include <sound/info.h> |
45 | #include <sound/ac97_codec.h> |
46 | #include <sound/initval.h> |
47 | |
48 | #if 0 |
49 | #define POINTER_DEBUG |
50 | #endif |
51 | |
52 | MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>"); |
53 | MODULE_DESCRIPTION("VIA VT82xx modem"); |
54 | MODULE_LICENSE("GPL"); |
55 | MODULE_SUPPORTED_DEVICE("{{VIA,VT82C686A/B/C modem,pci}}"); |
56 | |
57 | static int index = -2; /* Exclude the first card */ |
58 | static char *id = SNDRV_DEFAULT_STR1; /* ID for this card */ |
59 | static int ac97_clock = 48000; |
60 | |
61 | module_param(index, int, 0444); |
62 | MODULE_PARM_DESC(index, "Index value for VIA 82xx bridge."); |
63 | module_param(id, charp, 0444); |
64 | MODULE_PARM_DESC(id, "ID string for VIA 82xx bridge."); |
65 | module_param(ac97_clock, int, 0444); |
66 | MODULE_PARM_DESC(ac97_clock, "AC'97 codec clock (default 48000Hz)."); |
67 | |
68 | /* just for backward compatibility */ |
69 | static bool enable; |
70 | module_param(enable, bool, 0444); |
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 | /* |
209 | * pcm stream |
210 | */ |
211 | |
212 | struct snd_via_sg_table { |
213 | unsigned int offset; |
214 | unsigned int size; |
215 | } ; |
216 | |
217 | #define VIA_TABLE_SIZE 255 |
218 | |
219 | struct viadev { |
220 | unsigned int reg_offset; |
221 | unsigned long port; |
222 | int direction; /* playback = 0, capture = 1 */ |
223 | struct snd_pcm_substream *substream; |
224 | int running; |
225 | unsigned int tbl_entries; /* # descriptors */ |
226 | struct snd_dma_buffer table; |
227 | struct snd_via_sg_table *idx_table; |
228 | /* for recovery from the unexpected pointer */ |
229 | unsigned int lastpos; |
230 | unsigned int bufsize; |
231 | unsigned int bufsize2; |
232 | }; |
233 | |
234 | enum { TYPE_CARD_VIA82XX_MODEM = 1 }; |
235 | |
236 | #define VIA_MAX_MODEM_DEVS 2 |
237 | |
238 | struct via82xx_modem { |
239 | int irq; |
240 | |
241 | unsigned long port; |
242 | |
243 | unsigned int intr_mask; /* SGD_SHADOW mask to check interrupts */ |
244 | |
245 | struct pci_dev *pci; |
246 | struct snd_card *card; |
247 | |
248 | unsigned int num_devs; |
249 | unsigned int playback_devno, capture_devno; |
250 | struct viadev devs[VIA_MAX_MODEM_DEVS]; |
251 | |
252 | struct snd_pcm *pcms[2]; |
253 | |
254 | struct snd_ac97_bus *ac97_bus; |
255 | struct snd_ac97 *ac97; |
256 | unsigned int ac97_clock; |
257 | unsigned int ac97_secondary; /* secondary AC'97 codec is present */ |
258 | |
259 | spinlock_t reg_lock; |
260 | struct snd_info_entry *proc_entry; |
261 | }; |
262 | |
263 | static DEFINE_PCI_DEVICE_TABLE(snd_via82xx_modem_ids) = { |
264 | { PCI_VDEVICE(VIA, 0x3068), TYPE_CARD_VIA82XX_MODEM, }, |
265 | { 0, } |
266 | }; |
267 | |
268 | MODULE_DEVICE_TABLE(pci, snd_via82xx_modem_ids); |
269 | |
270 | /* |
271 | */ |
272 | |
273 | /* |
274 | * allocate and initialize the descriptor buffers |
275 | * periods = number of periods |
276 | * fragsize = period size in bytes |
277 | */ |
278 | static int build_via_table(struct viadev *dev, struct snd_pcm_substream *substream, |
279 | struct pci_dev *pci, |
280 | unsigned int periods, unsigned int fragsize) |
281 | { |
282 | unsigned int i, idx, ofs, rest; |
283 | struct via82xx_modem *chip = snd_pcm_substream_chip(substream); |
284 | |
285 | if (dev->table.area == NULL) { |
286 | /* the start of each lists must be aligned to 8 bytes, |
287 | * but the kernel pages are much bigger, so we don't care |
288 | */ |
289 | if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(chip->pci), |
290 | PAGE_ALIGN(VIA_TABLE_SIZE * 2 * 8), |
291 | &dev->table) < 0) |
292 | return -ENOMEM; |
293 | } |
294 | if (! dev->idx_table) { |
295 | dev->idx_table = kmalloc(sizeof(*dev->idx_table) * VIA_TABLE_SIZE, GFP_KERNEL); |
296 | if (! dev->idx_table) |
297 | return -ENOMEM; |
298 | } |
299 | |
300 | /* fill the entries */ |
301 | idx = 0; |
302 | ofs = 0; |
303 | for (i = 0; i < periods; i++) { |
304 | rest = fragsize; |
305 | /* fill descriptors for a period. |
306 | * a period can be split to several descriptors if it's |
307 | * over page boundary. |
308 | */ |
309 | do { |
310 | unsigned int r; |
311 | unsigned int flag; |
312 | unsigned int addr; |
313 | |
314 | if (idx >= VIA_TABLE_SIZE) { |
315 | snd_printk(KERN_ERR "via82xx: too much table size!\n"); |
316 | return -EINVAL; |
317 | } |
318 | addr = snd_pcm_sgbuf_get_addr(substream, ofs); |
319 | ((u32 *)dev->table.area)[idx << 1] = cpu_to_le32(addr); |
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 | /* |
332 | printk(KERN_DEBUG "via: tbl %d: at %d size %d " |
333 | "(rest %d)\n", idx, ofs, r, rest); |
334 | */ |
335 | ((u32 *)dev->table.area)[(idx<<1) + 1] = cpu_to_le32(r | flag); |
336 | dev->idx_table[idx].offset = ofs; |
337 | dev->idx_table[idx].size = r; |
338 | ofs += r; |
339 | idx++; |
340 | } while (rest > 0); |
341 | } |
342 | dev->tbl_entries = idx; |
343 | dev->bufsize = periods * fragsize; |
344 | dev->bufsize2 = dev->bufsize / 2; |
345 | return 0; |
346 | } |
347 | |
348 | |
349 | static int clean_via_table(struct viadev *dev, struct snd_pcm_substream *substream, |
350 | struct pci_dev *pci) |
351 | { |
352 | if (dev->table.area) { |
353 | snd_dma_free_pages(&dev->table); |
354 | dev->table.area = NULL; |
355 | } |
356 | kfree(dev->idx_table); |
357 | dev->idx_table = NULL; |
358 | return 0; |
359 | } |
360 | |
361 | /* |
362 | * Basic I/O |
363 | */ |
364 | |
365 | static inline unsigned int snd_via82xx_codec_xread(struct via82xx_modem *chip) |
366 | { |
367 | return inl(VIAREG(chip, AC97)); |
368 | } |
369 | |
370 | static inline void snd_via82xx_codec_xwrite(struct via82xx_modem *chip, unsigned int val) |
371 | { |
372 | outl(val, VIAREG(chip, AC97)); |
373 | } |
374 | |
375 | static int snd_via82xx_codec_ready(struct via82xx_modem *chip, int secondary) |
376 | { |
377 | unsigned int timeout = 1000; /* 1ms */ |
378 | unsigned int val; |
379 | |
380 | while (timeout-- > 0) { |
381 | udelay(1); |
382 | if (!((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY)) |
383 | return val & 0xffff; |
384 | } |
385 | snd_printk(KERN_ERR "codec_ready: codec %i is not ready [0x%x]\n", |
386 | secondary, snd_via82xx_codec_xread(chip)); |
387 | return -EIO; |
388 | } |
389 | |
390 | static int snd_via82xx_codec_valid(struct via82xx_modem *chip, int secondary) |
391 | { |
392 | unsigned int timeout = 1000; /* 1ms */ |
393 | unsigned int val, val1; |
394 | unsigned int stat = !secondary ? VIA_REG_AC97_PRIMARY_VALID : |
395 | VIA_REG_AC97_SECONDARY_VALID; |
396 | |
397 | while (timeout-- > 0) { |
398 | val = snd_via82xx_codec_xread(chip); |
399 | val1 = val & (VIA_REG_AC97_BUSY | stat); |
400 | if (val1 == stat) |
401 | return val & 0xffff; |
402 | udelay(1); |
403 | } |
404 | return -EIO; |
405 | } |
406 | |
407 | static void snd_via82xx_codec_wait(struct snd_ac97 *ac97) |
408 | { |
409 | struct via82xx_modem *chip = ac97->private_data; |
410 | int err; |
411 | err = snd_via82xx_codec_ready(chip, ac97->num); |
412 | /* here we need to wait fairly for long time.. */ |
413 | msleep(500); |
414 | } |
415 | |
416 | static void snd_via82xx_codec_write(struct snd_ac97 *ac97, |
417 | unsigned short reg, |
418 | unsigned short val) |
419 | { |
420 | struct via82xx_modem *chip = ac97->private_data; |
421 | unsigned int xval; |
422 | if(reg == AC97_GPIO_STATUS) { |
423 | outl(val, VIAREG(chip, GPI_STATUS)); |
424 | return; |
425 | } |
426 | xval = !ac97->num ? VIA_REG_AC97_CODEC_ID_PRIMARY : VIA_REG_AC97_CODEC_ID_SECONDARY; |
427 | xval <<= VIA_REG_AC97_CODEC_ID_SHIFT; |
428 | xval |= reg << VIA_REG_AC97_CMD_SHIFT; |
429 | xval |= val << VIA_REG_AC97_DATA_SHIFT; |
430 | snd_via82xx_codec_xwrite(chip, xval); |
431 | snd_via82xx_codec_ready(chip, ac97->num); |
432 | } |
433 | |
434 | static unsigned short snd_via82xx_codec_read(struct snd_ac97 *ac97, unsigned short reg) |
435 | { |
436 | struct via82xx_modem *chip = ac97->private_data; |
437 | unsigned int xval, val = 0xffff; |
438 | int again = 0; |
439 | |
440 | xval = ac97->num << VIA_REG_AC97_CODEC_ID_SHIFT; |
441 | xval |= ac97->num ? VIA_REG_AC97_SECONDARY_VALID : VIA_REG_AC97_PRIMARY_VALID; |
442 | xval |= VIA_REG_AC97_READ; |
443 | xval |= (reg & 0x7f) << VIA_REG_AC97_CMD_SHIFT; |
444 | while (1) { |
445 | if (again++ > 3) { |
446 | snd_printk(KERN_ERR "codec_read: codec %i is not valid [0x%x]\n", |
447 | ac97->num, snd_via82xx_codec_xread(chip)); |
448 | return 0xffff; |
449 | } |
450 | snd_via82xx_codec_xwrite(chip, xval); |
451 | udelay (20); |
452 | if (snd_via82xx_codec_valid(chip, ac97->num) >= 0) { |
453 | udelay(25); |
454 | val = snd_via82xx_codec_xread(chip); |
455 | break; |
456 | } |
457 | } |
458 | return val & 0xffff; |
459 | } |
460 | |
461 | static void snd_via82xx_channel_reset(struct via82xx_modem *chip, struct viadev *viadev) |
462 | { |
463 | outb(VIA_REG_CTRL_PAUSE | VIA_REG_CTRL_TERMINATE | VIA_REG_CTRL_RESET, |
464 | VIADEV_REG(viadev, OFFSET_CONTROL)); |
465 | inb(VIADEV_REG(viadev, OFFSET_CONTROL)); |
466 | udelay(50); |
467 | /* disable interrupts */ |
468 | outb(0x00, VIADEV_REG(viadev, OFFSET_CONTROL)); |
469 | /* clear interrupts */ |
470 | outb(0x03, VIADEV_REG(viadev, OFFSET_STATUS)); |
471 | outb(0x00, VIADEV_REG(viadev, OFFSET_TYPE)); /* for via686 */ |
472 | // outl(0, VIADEV_REG(viadev, OFFSET_CURR_PTR)); |
473 | viadev->lastpos = 0; |
474 | } |
475 | |
476 | |
477 | /* |
478 | * Interrupt handler |
479 | */ |
480 | |
481 | static irqreturn_t snd_via82xx_interrupt(int irq, void *dev_id) |
482 | { |
483 | struct via82xx_modem *chip = dev_id; |
484 | unsigned int status; |
485 | unsigned int i; |
486 | |
487 | status = inl(VIAREG(chip, SGD_SHADOW)); |
488 | if (! (status & chip->intr_mask)) { |
489 | return IRQ_NONE; |
490 | } |
491 | // _skip_sgd: |
492 | |
493 | /* check status for each stream */ |
494 | spin_lock(&chip->reg_lock); |
495 | for (i = 0; i < chip->num_devs; i++) { |
496 | struct viadev *viadev = &chip->devs[i]; |
497 | unsigned char c_status = inb(VIADEV_REG(viadev, OFFSET_STATUS)); |
498 | c_status &= (VIA_REG_STAT_EOL|VIA_REG_STAT_FLAG|VIA_REG_STAT_STOPPED); |
499 | if (! c_status) |
500 | continue; |
501 | if (viadev->substream && viadev->running) { |
502 | spin_unlock(&chip->reg_lock); |
503 | snd_pcm_period_elapsed(viadev->substream); |
504 | spin_lock(&chip->reg_lock); |
505 | } |
506 | outb(c_status, VIADEV_REG(viadev, OFFSET_STATUS)); /* ack */ |
507 | } |
508 | spin_unlock(&chip->reg_lock); |
509 | return IRQ_HANDLED; |
510 | } |
511 | |
512 | /* |
513 | * PCM callbacks |
514 | */ |
515 | |
516 | /* |
517 | * trigger callback |
518 | */ |
519 | static int snd_via82xx_pcm_trigger(struct snd_pcm_substream *substream, int cmd) |
520 | { |
521 | struct via82xx_modem *chip = snd_pcm_substream_chip(substream); |
522 | struct viadev *viadev = substream->runtime->private_data; |
523 | unsigned char val = 0; |
524 | |
525 | switch (cmd) { |
526 | case SNDRV_PCM_TRIGGER_START: |
527 | case SNDRV_PCM_TRIGGER_SUSPEND: |
528 | val |= VIA_REG_CTRL_START; |
529 | viadev->running = 1; |
530 | break; |
531 | case SNDRV_PCM_TRIGGER_STOP: |
532 | val = VIA_REG_CTRL_TERMINATE; |
533 | viadev->running = 0; |
534 | break; |
535 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: |
536 | val |= VIA_REG_CTRL_PAUSE; |
537 | viadev->running = 0; |
538 | break; |
539 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: |
540 | viadev->running = 1; |
541 | break; |
542 | default: |
543 | return -EINVAL; |
544 | } |
545 | outb(val, VIADEV_REG(viadev, OFFSET_CONTROL)); |
546 | if (cmd == SNDRV_PCM_TRIGGER_STOP) |
547 | snd_via82xx_channel_reset(chip, viadev); |
548 | return 0; |
549 | } |
550 | |
551 | /* |
552 | * pointer callbacks |
553 | */ |
554 | |
555 | /* |
556 | * calculate the linear position at the given sg-buffer index and the rest count |
557 | */ |
558 | |
559 | #define check_invalid_pos(viadev,pos) \ |
560 | ((pos) < viadev->lastpos && ((pos) >= viadev->bufsize2 ||\ |
561 | viadev->lastpos < viadev->bufsize2)) |
562 | |
563 | static inline unsigned int calc_linear_pos(struct viadev *viadev, unsigned int idx, |
564 | unsigned int count) |
565 | { |
566 | unsigned int size, res; |
567 | |
568 | size = viadev->idx_table[idx].size; |
569 | res = viadev->idx_table[idx].offset + size - count; |
570 | |
571 | /* check the validity of the calculated position */ |
572 | if (size < count) { |
573 | snd_printd(KERN_ERR "invalid via82xx_cur_ptr (size = %d, count = %d)\n", |
574 | (int)size, (int)count); |
575 | res = viadev->lastpos; |
576 | } else if (check_invalid_pos(viadev, res)) { |
577 | #ifdef POINTER_DEBUG |
578 | printk(KERN_DEBUG "fail: idx = %i/%i, lastpos = 0x%x, " |
579 | "bufsize2 = 0x%x, offsize = 0x%x, size = 0x%x, " |
580 | "count = 0x%x\n", idx, viadev->tbl_entries, viadev->lastpos, |
581 | viadev->bufsize2, viadev->idx_table[idx].offset, |
582 | viadev->idx_table[idx].size, count); |
583 | #endif |
584 | if (count && size < count) { |
585 | snd_printd(KERN_ERR "invalid via82xx_cur_ptr, " |
586 | "using last valid pointer\n"); |
587 | res = viadev->lastpos; |
588 | } else { |
589 | if (! count) |
590 | /* bogus count 0 on the DMA boundary? */ |
591 | res = viadev->idx_table[idx].offset; |
592 | else |
593 | /* count register returns full size |
594 | * when end of buffer is reached |
595 | */ |
596 | res = viadev->idx_table[idx].offset + size; |
597 | if (check_invalid_pos(viadev, res)) { |
598 | snd_printd(KERN_ERR "invalid via82xx_cur_ptr (2), " |
599 | "using last valid pointer\n"); |
600 | res = viadev->lastpos; |
601 | } |
602 | } |
603 | } |
604 | viadev->lastpos = res; /* remember the last position */ |
605 | if (res >= viadev->bufsize) |
606 | res -= viadev->bufsize; |
607 | return res; |
608 | } |
609 | |
610 | /* |
611 | * get the current pointer on via686 |
612 | */ |
613 | static snd_pcm_uframes_t snd_via686_pcm_pointer(struct snd_pcm_substream *substream) |
614 | { |
615 | struct via82xx_modem *chip = snd_pcm_substream_chip(substream); |
616 | struct viadev *viadev = substream->runtime->private_data; |
617 | unsigned int idx, ptr, count, res; |
618 | |
619 | if (snd_BUG_ON(!viadev->tbl_entries)) |
620 | return 0; |
621 | if (!(inb(VIADEV_REG(viadev, OFFSET_STATUS)) & VIA_REG_STAT_ACTIVE)) |
622 | return 0; |
623 | |
624 | spin_lock(&chip->reg_lock); |
625 | count = inl(VIADEV_REG(viadev, OFFSET_CURR_COUNT)) & 0xffffff; |
626 | /* The via686a does not have the current index register, |
627 | * so we need to calculate the index from CURR_PTR. |
628 | */ |
629 | ptr = inl(VIADEV_REG(viadev, OFFSET_CURR_PTR)); |
630 | if (ptr <= (unsigned int)viadev->table.addr) |
631 | idx = 0; |
632 | else /* CURR_PTR holds the address + 8 */ |
633 | idx = ((ptr - (unsigned int)viadev->table.addr) / 8 - 1) % |
634 | viadev->tbl_entries; |
635 | res = calc_linear_pos(viadev, idx, count); |
636 | spin_unlock(&chip->reg_lock); |
637 | |
638 | return bytes_to_frames(substream->runtime, res); |
639 | } |
640 | |
641 | /* |
642 | * hw_params callback: |
643 | * allocate the buffer and build up the buffer description table |
644 | */ |
645 | static int snd_via82xx_hw_params(struct snd_pcm_substream *substream, |
646 | struct snd_pcm_hw_params *hw_params) |
647 | { |
648 | struct via82xx_modem *chip = snd_pcm_substream_chip(substream); |
649 | struct viadev *viadev = substream->runtime->private_data; |
650 | int err; |
651 | |
652 | err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params)); |
653 | if (err < 0) |
654 | return err; |
655 | err = build_via_table(viadev, substream, chip->pci, |
656 | params_periods(hw_params), |
657 | params_period_bytes(hw_params)); |
658 | if (err < 0) |
659 | return err; |
660 | |
661 | snd_ac97_write(chip->ac97, AC97_LINE1_RATE, params_rate(hw_params)); |
662 | snd_ac97_write(chip->ac97, AC97_LINE1_LEVEL, 0); |
663 | |
664 | return 0; |
665 | } |
666 | |
667 | /* |
668 | * hw_free callback: |
669 | * clean up the buffer description table and release the buffer |
670 | */ |
671 | static int snd_via82xx_hw_free(struct snd_pcm_substream *substream) |
672 | { |
673 | struct via82xx_modem *chip = snd_pcm_substream_chip(substream); |
674 | struct viadev *viadev = substream->runtime->private_data; |
675 | |
676 | clean_via_table(viadev, substream, chip->pci); |
677 | snd_pcm_lib_free_pages(substream); |
678 | return 0; |
679 | } |
680 | |
681 | |
682 | /* |
683 | * set up the table pointer |
684 | */ |
685 | static void snd_via82xx_set_table_ptr(struct via82xx_modem *chip, struct viadev *viadev) |
686 | { |
687 | snd_via82xx_codec_ready(chip, chip->ac97_secondary); |
688 | outl((u32)viadev->table.addr, VIADEV_REG(viadev, OFFSET_TABLE_PTR)); |
689 | udelay(20); |
690 | snd_via82xx_codec_ready(chip, chip->ac97_secondary); |
691 | } |
692 | |
693 | /* |
694 | * prepare callback for playback and capture |
695 | */ |
696 | static int snd_via82xx_pcm_prepare(struct snd_pcm_substream *substream) |
697 | { |
698 | struct via82xx_modem *chip = snd_pcm_substream_chip(substream); |
699 | struct viadev *viadev = substream->runtime->private_data; |
700 | |
701 | snd_via82xx_channel_reset(chip, viadev); |
702 | /* this must be set after channel_reset */ |
703 | snd_via82xx_set_table_ptr(chip, viadev); |
704 | outb(VIA_REG_TYPE_AUTOSTART|VIA_REG_TYPE_INT_EOL|VIA_REG_TYPE_INT_FLAG, |
705 | VIADEV_REG(viadev, OFFSET_TYPE)); |
706 | return 0; |
707 | } |
708 | |
709 | /* |
710 | * pcm hardware definition, identical for both playback and capture |
711 | */ |
712 | static struct snd_pcm_hardware snd_via82xx_hw = |
713 | { |
714 | .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED | |
715 | SNDRV_PCM_INFO_BLOCK_TRANSFER | |
716 | SNDRV_PCM_INFO_MMAP_VALID | |
717 | /* SNDRV_PCM_INFO_RESUME | */ |
718 | SNDRV_PCM_INFO_PAUSE), |
719 | .formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE, |
720 | .rates = SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_KNOT, |
721 | .rate_min = 8000, |
722 | .rate_max = 16000, |
723 | .channels_min = 1, |
724 | .channels_max = 1, |
725 | .buffer_bytes_max = 128 * 1024, |
726 | .period_bytes_min = 32, |
727 | .period_bytes_max = 128 * 1024, |
728 | .periods_min = 2, |
729 | .periods_max = VIA_TABLE_SIZE / 2, |
730 | .fifo_size = 0, |
731 | }; |
732 | |
733 | |
734 | /* |
735 | * open callback skeleton |
736 | */ |
737 | static int snd_via82xx_modem_pcm_open(struct via82xx_modem *chip, struct viadev *viadev, |
738 | struct snd_pcm_substream *substream) |
739 | { |
740 | struct snd_pcm_runtime *runtime = substream->runtime; |
741 | int err; |
742 | static unsigned int rates[] = { 8000, 9600, 12000, 16000 }; |
743 | static struct snd_pcm_hw_constraint_list hw_constraints_rates = { |
744 | .count = ARRAY_SIZE(rates), |
745 | .list = rates, |
746 | .mask = 0, |
747 | }; |
748 | |
749 | runtime->hw = snd_via82xx_hw; |
750 | |
751 | if ((err = snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, |
752 | &hw_constraints_rates)) < 0) |
753 | return err; |
754 | |
755 | /* we may remove following constaint when we modify table entries |
756 | in interrupt */ |
757 | if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0) |
758 | return err; |
759 | |
760 | runtime->private_data = viadev; |
761 | viadev->substream = substream; |
762 | |
763 | return 0; |
764 | } |
765 | |
766 | |
767 | /* |
768 | * open callback for playback |
769 | */ |
770 | static int snd_via82xx_playback_open(struct snd_pcm_substream *substream) |
771 | { |
772 | struct via82xx_modem *chip = snd_pcm_substream_chip(substream); |
773 | struct viadev *viadev = &chip->devs[chip->playback_devno + substream->number]; |
774 | |
775 | return snd_via82xx_modem_pcm_open(chip, viadev, substream); |
776 | } |
777 | |
778 | /* |
779 | * open callback for capture |
780 | */ |
781 | static int snd_via82xx_capture_open(struct snd_pcm_substream *substream) |
782 | { |
783 | struct via82xx_modem *chip = snd_pcm_substream_chip(substream); |
784 | struct viadev *viadev = &chip->devs[chip->capture_devno + substream->pcm->device]; |
785 | |
786 | return snd_via82xx_modem_pcm_open(chip, viadev, substream); |
787 | } |
788 | |
789 | /* |
790 | * close callback |
791 | */ |
792 | static int snd_via82xx_pcm_close(struct snd_pcm_substream *substream) |
793 | { |
794 | struct viadev *viadev = substream->runtime->private_data; |
795 | |
796 | viadev->substream = NULL; |
797 | return 0; |
798 | } |
799 | |
800 | |
801 | /* via686 playback callbacks */ |
802 | static struct snd_pcm_ops snd_via686_playback_ops = { |
803 | .open = snd_via82xx_playback_open, |
804 | .close = snd_via82xx_pcm_close, |
805 | .ioctl = snd_pcm_lib_ioctl, |
806 | .hw_params = snd_via82xx_hw_params, |
807 | .hw_free = snd_via82xx_hw_free, |
808 | .prepare = snd_via82xx_pcm_prepare, |
809 | .trigger = snd_via82xx_pcm_trigger, |
810 | .pointer = snd_via686_pcm_pointer, |
811 | .page = snd_pcm_sgbuf_ops_page, |
812 | }; |
813 | |
814 | /* via686 capture callbacks */ |
815 | static struct snd_pcm_ops snd_via686_capture_ops = { |
816 | .open = snd_via82xx_capture_open, |
817 | .close = snd_via82xx_pcm_close, |
818 | .ioctl = snd_pcm_lib_ioctl, |
819 | .hw_params = snd_via82xx_hw_params, |
820 | .hw_free = snd_via82xx_hw_free, |
821 | .prepare = snd_via82xx_pcm_prepare, |
822 | .trigger = snd_via82xx_pcm_trigger, |
823 | .pointer = snd_via686_pcm_pointer, |
824 | .page = snd_pcm_sgbuf_ops_page, |
825 | }; |
826 | |
827 | |
828 | static void init_viadev(struct via82xx_modem *chip, int idx, unsigned int reg_offset, |
829 | int direction) |
830 | { |
831 | chip->devs[idx].reg_offset = reg_offset; |
832 | chip->devs[idx].direction = direction; |
833 | chip->devs[idx].port = chip->port + reg_offset; |
834 | } |
835 | |
836 | /* |
837 | * create a pcm instance for via686a/b |
838 | */ |
839 | static int snd_via686_pcm_new(struct via82xx_modem *chip) |
840 | { |
841 | struct snd_pcm *pcm; |
842 | int err; |
843 | |
844 | chip->playback_devno = 0; |
845 | chip->capture_devno = 1; |
846 | chip->num_devs = 2; |
847 | chip->intr_mask = 0x330000; /* FLAGS | EOL for MR, MW */ |
848 | |
849 | err = snd_pcm_new(chip->card, chip->card->shortname, 0, 1, 1, &pcm); |
850 | if (err < 0) |
851 | return err; |
852 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via686_playback_ops); |
853 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via686_capture_ops); |
854 | pcm->dev_class = SNDRV_PCM_CLASS_MODEM; |
855 | pcm->private_data = chip; |
856 | strcpy(pcm->name, chip->card->shortname); |
857 | chip->pcms[0] = pcm; |
858 | init_viadev(chip, 0, VIA_REG_MO_STATUS, 0); |
859 | init_viadev(chip, 1, VIA_REG_MI_STATUS, 1); |
860 | |
861 | if ((err = snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG, |
862 | snd_dma_pci_data(chip->pci), |
863 | 64*1024, 128*1024)) < 0) |
864 | return err; |
865 | |
866 | return 0; |
867 | } |
868 | |
869 | |
870 | /* |
871 | * Mixer part |
872 | */ |
873 | |
874 | |
875 | static void snd_via82xx_mixer_free_ac97_bus(struct snd_ac97_bus *bus) |
876 | { |
877 | struct via82xx_modem *chip = bus->private_data; |
878 | chip->ac97_bus = NULL; |
879 | } |
880 | |
881 | static void snd_via82xx_mixer_free_ac97(struct snd_ac97 *ac97) |
882 | { |
883 | struct via82xx_modem *chip = ac97->private_data; |
884 | chip->ac97 = NULL; |
885 | } |
886 | |
887 | |
888 | static int snd_via82xx_mixer_new(struct via82xx_modem *chip) |
889 | { |
890 | struct snd_ac97_template ac97; |
891 | int err; |
892 | static struct snd_ac97_bus_ops ops = { |
893 | .write = snd_via82xx_codec_write, |
894 | .read = snd_via82xx_codec_read, |
895 | .wait = snd_via82xx_codec_wait, |
896 | }; |
897 | |
898 | if ((err = snd_ac97_bus(chip->card, 0, &ops, chip, &chip->ac97_bus)) < 0) |
899 | return err; |
900 | chip->ac97_bus->private_free = snd_via82xx_mixer_free_ac97_bus; |
901 | chip->ac97_bus->clock = chip->ac97_clock; |
902 | |
903 | memset(&ac97, 0, sizeof(ac97)); |
904 | ac97.private_data = chip; |
905 | ac97.private_free = snd_via82xx_mixer_free_ac97; |
906 | ac97.pci = chip->pci; |
907 | ac97.scaps = AC97_SCAP_SKIP_AUDIO | AC97_SCAP_POWER_SAVE; |
908 | ac97.num = chip->ac97_secondary; |
909 | |
910 | if ((err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97)) < 0) |
911 | return err; |
912 | |
913 | return 0; |
914 | } |
915 | |
916 | |
917 | /* |
918 | * proc interface |
919 | */ |
920 | static void snd_via82xx_proc_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer) |
921 | { |
922 | struct via82xx_modem *chip = entry->private_data; |
923 | int i; |
924 | |
925 | snd_iprintf(buffer, "%s\n\n", chip->card->longname); |
926 | for (i = 0; i < 0xa0; i += 4) { |
927 | snd_iprintf(buffer, "%02x: %08x\n", i, inl(chip->port + i)); |
928 | } |
929 | } |
930 | |
931 | static void snd_via82xx_proc_init(struct via82xx_modem *chip) |
932 | { |
933 | struct snd_info_entry *entry; |
934 | |
935 | if (! snd_card_proc_new(chip->card, "via82xx", &entry)) |
936 | snd_info_set_text_ops(entry, chip, snd_via82xx_proc_read); |
937 | } |
938 | |
939 | /* |
940 | * |
941 | */ |
942 | |
943 | static int snd_via82xx_chip_init(struct via82xx_modem *chip) |
944 | { |
945 | unsigned int val; |
946 | unsigned long end_time; |
947 | unsigned char pval; |
948 | |
949 | pci_read_config_byte(chip->pci, VIA_MC97_CTRL, &pval); |
950 | if((pval & VIA_MC97_CTRL_INIT) != VIA_MC97_CTRL_INIT) { |
951 | pci_write_config_byte(chip->pci, 0x44, pval|VIA_MC97_CTRL_INIT); |
952 | udelay(100); |
953 | } |
954 | |
955 | pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval); |
956 | if (! (pval & VIA_ACLINK_C00_READY)) { /* codec not ready? */ |
957 | /* deassert ACLink reset, force SYNC */ |
958 | pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, |
959 | VIA_ACLINK_CTRL_ENABLE | |
960 | VIA_ACLINK_CTRL_RESET | |
961 | VIA_ACLINK_CTRL_SYNC); |
962 | udelay(100); |
963 | #if 1 /* FIXME: should we do full reset here for all chip models? */ |
964 | pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, 0x00); |
965 | udelay(100); |
966 | #else |
967 | /* deassert ACLink reset, force SYNC (warm AC'97 reset) */ |
968 | pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, |
969 | VIA_ACLINK_CTRL_RESET|VIA_ACLINK_CTRL_SYNC); |
970 | udelay(2); |
971 | #endif |
972 | /* ACLink on, deassert ACLink reset, VSR, SGD data out */ |
973 | pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT); |
974 | udelay(100); |
975 | } |
976 | |
977 | pci_read_config_byte(chip->pci, VIA_ACLINK_CTRL, &pval); |
978 | if ((pval & VIA_ACLINK_CTRL_INIT) != VIA_ACLINK_CTRL_INIT) { |
979 | /* ACLink on, deassert ACLink reset, VSR, SGD data out */ |
980 | pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT); |
981 | udelay(100); |
982 | } |
983 | |
984 | /* wait until codec ready */ |
985 | end_time = jiffies + msecs_to_jiffies(750); |
986 | do { |
987 | pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval); |
988 | if (pval & VIA_ACLINK_C00_READY) /* primary codec ready */ |
989 | break; |
990 | schedule_timeout_uninterruptible(1); |
991 | } while (time_before(jiffies, end_time)); |
992 | |
993 | if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY) |
994 | snd_printk(KERN_ERR "AC'97 codec is not ready [0x%x]\n", val); |
995 | |
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 | end_time = jiffies + msecs_to_jiffies(750); |
1000 | snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ | |
1001 | VIA_REG_AC97_SECONDARY_VALID | |
1002 | (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT)); |
1003 | do { |
1004 | if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_SECONDARY_VALID) { |
1005 | chip->ac97_secondary = 1; |
1006 | goto __ac97_ok2; |
1007 | } |
1008 | schedule_timeout_uninterruptible(1); |
1009 | } while (time_before(jiffies, end_time)); |
1010 | /* This is ok, the most of motherboards have only one codec */ |
1011 | |
1012 | __ac97_ok2: |
1013 | |
1014 | /* route FM trap to IRQ, disable FM trap */ |
1015 | // pci_write_config_byte(chip->pci, VIA_FM_NMI_CTRL, 0); |
1016 | /* disable all GPI interrupts */ |
1017 | outl(0, VIAREG(chip, GPI_INTR)); |
1018 | |
1019 | return 0; |
1020 | } |
1021 | |
1022 | #ifdef CONFIG_PM_SLEEP |
1023 | /* |
1024 | * power management |
1025 | */ |
1026 | static int snd_via82xx_suspend(struct device *dev) |
1027 | { |
1028 | struct pci_dev *pci = to_pci_dev(dev); |
1029 | struct snd_card *card = dev_get_drvdata(dev); |
1030 | struct via82xx_modem *chip = card->private_data; |
1031 | int i; |
1032 | |
1033 | snd_power_change_state(card, SNDRV_CTL_POWER_D3hot); |
1034 | for (i = 0; i < 2; i++) |
1035 | snd_pcm_suspend_all(chip->pcms[i]); |
1036 | for (i = 0; i < chip->num_devs; i++) |
1037 | snd_via82xx_channel_reset(chip, &chip->devs[i]); |
1038 | synchronize_irq(chip->irq); |
1039 | snd_ac97_suspend(chip->ac97); |
1040 | |
1041 | pci_disable_device(pci); |
1042 | pci_save_state(pci); |
1043 | pci_set_power_state(pci, PCI_D3hot); |
1044 | return 0; |
1045 | } |
1046 | |
1047 | static int snd_via82xx_resume(struct device *dev) |
1048 | { |
1049 | struct pci_dev *pci = to_pci_dev(dev); |
1050 | struct snd_card *card = dev_get_drvdata(dev); |
1051 | struct via82xx_modem *chip = card->private_data; |
1052 | int i; |
1053 | |
1054 | pci_set_power_state(pci, PCI_D0); |
1055 | pci_restore_state(pci); |
1056 | if (pci_enable_device(pci) < 0) { |
1057 | printk(KERN_ERR "via82xx-modem: pci_enable_device failed, " |
1058 | "disabling device\n"); |
1059 | snd_card_disconnect(card); |
1060 | return -EIO; |
1061 | } |
1062 | pci_set_master(pci); |
1063 | |
1064 | snd_via82xx_chip_init(chip); |
1065 | |
1066 | snd_ac97_resume(chip->ac97); |
1067 | |
1068 | for (i = 0; i < chip->num_devs; i++) |
1069 | snd_via82xx_channel_reset(chip, &chip->devs[i]); |
1070 | |
1071 | snd_power_change_state(card, SNDRV_CTL_POWER_D0); |
1072 | return 0; |
1073 | } |
1074 | |
1075 | static SIMPLE_DEV_PM_OPS(snd_via82xx_pm, snd_via82xx_suspend, snd_via82xx_resume); |
1076 | #define SND_VIA82XX_PM_OPS &snd_via82xx_pm |
1077 | #else |
1078 | #define SND_VIA82XX_PM_OPS NULL |
1079 | #endif /* CONFIG_PM_SLEEP */ |
1080 | |
1081 | static int snd_via82xx_free(struct via82xx_modem *chip) |
1082 | { |
1083 | unsigned int i; |
1084 | |
1085 | if (chip->irq < 0) |
1086 | goto __end_hw; |
1087 | /* disable interrupts */ |
1088 | for (i = 0; i < chip->num_devs; i++) |
1089 | snd_via82xx_channel_reset(chip, &chip->devs[i]); |
1090 | |
1091 | __end_hw: |
1092 | if (chip->irq >= 0) |
1093 | free_irq(chip->irq, chip); |
1094 | pci_release_regions(chip->pci); |
1095 | pci_disable_device(chip->pci); |
1096 | kfree(chip); |
1097 | return 0; |
1098 | } |
1099 | |
1100 | static int snd_via82xx_dev_free(struct snd_device *device) |
1101 | { |
1102 | struct via82xx_modem *chip = device->device_data; |
1103 | return snd_via82xx_free(chip); |
1104 | } |
1105 | |
1106 | static int snd_via82xx_create(struct snd_card *card, |
1107 | struct pci_dev *pci, |
1108 | int chip_type, |
1109 | int revision, |
1110 | unsigned int ac97_clock, |
1111 | struct via82xx_modem **r_via) |
1112 | { |
1113 | struct via82xx_modem *chip; |
1114 | int err; |
1115 | static struct snd_device_ops ops = { |
1116 | .dev_free = snd_via82xx_dev_free, |
1117 | }; |
1118 | |
1119 | if ((err = pci_enable_device(pci)) < 0) |
1120 | return err; |
1121 | |
1122 | if ((chip = kzalloc(sizeof(*chip), GFP_KERNEL)) == NULL) { |
1123 | pci_disable_device(pci); |
1124 | return -ENOMEM; |
1125 | } |
1126 | |
1127 | spin_lock_init(&chip->reg_lock); |
1128 | chip->card = card; |
1129 | chip->pci = pci; |
1130 | chip->irq = -1; |
1131 | |
1132 | if ((err = pci_request_regions(pci, card->driver)) < 0) { |
1133 | kfree(chip); |
1134 | pci_disable_device(pci); |
1135 | return err; |
1136 | } |
1137 | chip->port = pci_resource_start(pci, 0); |
1138 | if (request_irq(pci->irq, snd_via82xx_interrupt, IRQF_SHARED, |
1139 | KBUILD_MODNAME, chip)) { |
1140 | snd_printk(KERN_ERR "unable to grab IRQ %d\n", pci->irq); |
1141 | snd_via82xx_free(chip); |
1142 | return -EBUSY; |
1143 | } |
1144 | chip->irq = pci->irq; |
1145 | if (ac97_clock >= 8000 && ac97_clock <= 48000) |
1146 | chip->ac97_clock = ac97_clock; |
1147 | synchronize_irq(chip->irq); |
1148 | |
1149 | if ((err = snd_via82xx_chip_init(chip)) < 0) { |
1150 | snd_via82xx_free(chip); |
1151 | return err; |
1152 | } |
1153 | |
1154 | if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) { |
1155 | snd_via82xx_free(chip); |
1156 | return err; |
1157 | } |
1158 | |
1159 | /* The 8233 ac97 controller does not implement the master bit |
1160 | * in the pci command register. IMHO this is a violation of the PCI spec. |
1161 | * We call pci_set_master here because it does not hurt. */ |
1162 | pci_set_master(pci); |
1163 | |
1164 | snd_card_set_dev(card, &pci->dev); |
1165 | |
1166 | *r_via = chip; |
1167 | return 0; |
1168 | } |
1169 | |
1170 | |
1171 | static int snd_via82xx_probe(struct pci_dev *pci, |
1172 | const struct pci_device_id *pci_id) |
1173 | { |
1174 | struct snd_card *card; |
1175 | struct via82xx_modem *chip; |
1176 | int chip_type = 0, card_type; |
1177 | unsigned int i; |
1178 | int err; |
1179 | |
1180 | err = snd_card_create(index, id, THIS_MODULE, 0, &card); |
1181 | if (err < 0) |
1182 | return err; |
1183 | |
1184 | card_type = pci_id->driver_data; |
1185 | switch (card_type) { |
1186 | case TYPE_CARD_VIA82XX_MODEM: |
1187 | strcpy(card->driver, "VIA82XX-MODEM"); |
1188 | sprintf(card->shortname, "VIA 82XX modem"); |
1189 | break; |
1190 | default: |
1191 | snd_printk(KERN_ERR "invalid card type %d\n", card_type); |
1192 | err = -EINVAL; |
1193 | goto __error; |
1194 | } |
1195 | |
1196 | if ((err = snd_via82xx_create(card, pci, chip_type, pci->revision, |
1197 | ac97_clock, &chip)) < 0) |
1198 | goto __error; |
1199 | card->private_data = chip; |
1200 | if ((err = snd_via82xx_mixer_new(chip)) < 0) |
1201 | goto __error; |
1202 | |
1203 | if ((err = snd_via686_pcm_new(chip)) < 0 ) |
1204 | goto __error; |
1205 | |
1206 | /* disable interrupts */ |
1207 | for (i = 0; i < chip->num_devs; i++) |
1208 | snd_via82xx_channel_reset(chip, &chip->devs[i]); |
1209 | |
1210 | sprintf(card->longname, "%s at 0x%lx, irq %d", |
1211 | card->shortname, chip->port, chip->irq); |
1212 | |
1213 | snd_via82xx_proc_init(chip); |
1214 | |
1215 | if ((err = snd_card_register(card)) < 0) { |
1216 | snd_card_free(card); |
1217 | return err; |
1218 | } |
1219 | pci_set_drvdata(pci, card); |
1220 | return 0; |
1221 | |
1222 | __error: |
1223 | snd_card_free(card); |
1224 | return err; |
1225 | } |
1226 | |
1227 | static void snd_via82xx_remove(struct pci_dev *pci) |
1228 | { |
1229 | snd_card_free(pci_get_drvdata(pci)); |
1230 | } |
1231 | |
1232 | static struct pci_driver via82xx_modem_driver = { |
1233 | .name = KBUILD_MODNAME, |
1234 | .id_table = snd_via82xx_modem_ids, |
1235 | .probe = snd_via82xx_probe, |
1236 | .remove = snd_via82xx_remove, |
1237 | .driver = { |
1238 | .pm = SND_VIA82XX_PM_OPS, |
1239 | }, |
1240 | }; |
1241 | |
1242 | module_pci_driver(via82xx_modem_driver); |
1243 |
Branches:
ben-wpan
ben-wpan-stefan
javiroman/ks7010
jz-2.6.34
jz-2.6.34-rc5
jz-2.6.34-rc6
jz-2.6.34-rc7
jz-2.6.35
jz-2.6.36
jz-2.6.37
jz-2.6.38
jz-2.6.39
jz-3.0
jz-3.1
jz-3.11
jz-3.12
jz-3.13
jz-3.15
jz-3.16
jz-3.18-dt
jz-3.2
jz-3.3
jz-3.4
jz-3.5
jz-3.6
jz-3.6-rc2-pwm
jz-3.9
jz-3.9-clk
jz-3.9-rc8
jz47xx
jz47xx-2.6.38
master
Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
v2.6.34-rc6
v2.6.34-rc7
v3.9