Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * ALSA modem driver for VIA VT82xx (South Bridge) | |
3 | * | |
4 | * VT82C686A/B/C, VT8233A/C, VT8235 | |
5 | * | |
c1017a4c | 6 | * Copyright (c) 2000 Jaroslav Kysela <perex@perex.cz> |
1da177e4 LT |
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 | ||
6cbbfe1c | 34 | #include <linux/io.h> |
1da177e4 LT |
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> | |
65a77217 | 40 | #include <linux/module.h> |
1da177e4 LT |
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 | ||
c1017a4c | 52 | MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>"); |
1da177e4 LT |
53 | MODULE_DESCRIPTION("VIA VT82xx modem"); |
54 | MODULE_LICENSE("GPL"); | |
55 | MODULE_SUPPORTED_DEVICE("{{VIA,VT82C686A/B/C modem,pci}}"); | |
56 | ||
b7fe4622 CL |
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; | |
1da177e4 | 60 | |
b7fe4622 | 61 | module_param(index, int, 0444); |
1da177e4 | 62 | MODULE_PARM_DESC(index, "Index value for VIA 82xx bridge."); |
b7fe4622 | 63 | module_param(id, charp, 0444); |
1da177e4 | 64 | MODULE_PARM_DESC(id, "ID string for VIA 82xx bridge."); |
b7fe4622 | 65 | module_param(ac97_clock, int, 0444); |
1da177e4 LT |
66 | MODULE_PARM_DESC(ac97_clock, "AC'97 codec clock (default 48000Hz)."); |
67 | ||
2b3e584b | 68 | /* just for backward compatibility */ |
a67ff6a5 | 69 | static bool enable; |
698444f3 | 70 | module_param(enable, bool, 0444); |
2b3e584b | 71 | |
1da177e4 LT |
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 | ||
1da177e4 LT |
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 | ||
e437e3d7 | 219 | struct viadev { |
1da177e4 LT |
220 | unsigned int reg_offset; |
221 | unsigned long port; | |
222 | int direction; /* playback = 0, capture = 1 */ | |
e437e3d7 | 223 | struct snd_pcm_substream *substream; |
1da177e4 LT |
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 | ||
e437e3d7 | 238 | struct via82xx_modem { |
1da177e4 LT |
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; | |
e437e3d7 | 246 | struct snd_card *card; |
1da177e4 LT |
247 | |
248 | unsigned int num_devs; | |
249 | unsigned int playback_devno, capture_devno; | |
e437e3d7 | 250 | struct viadev devs[VIA_MAX_MODEM_DEVS]; |
1da177e4 | 251 | |
e437e3d7 | 252 | struct snd_pcm *pcms[2]; |
1da177e4 | 253 | |
e437e3d7 TI |
254 | struct snd_ac97_bus *ac97_bus; |
255 | struct snd_ac97 *ac97; | |
1da177e4 LT |
256 | unsigned int ac97_clock; |
257 | unsigned int ac97_secondary; /* secondary AC'97 codec is present */ | |
258 | ||
259 | spinlock_t reg_lock; | |
e437e3d7 | 260 | struct snd_info_entry *proc_entry; |
1da177e4 LT |
261 | }; |
262 | ||
9baa3c34 | 263 | static const struct pci_device_id snd_via82xx_modem_ids[] = { |
28d27aae | 264 | { PCI_VDEVICE(VIA, 0x3068), TYPE_CARD_VIA82XX_MODEM, }, |
1da177e4 LT |
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 | */ | |
e437e3d7 | 278 | static int build_via_table(struct viadev *dev, struct snd_pcm_substream *substream, |
1da177e4 LT |
279 | struct pci_dev *pci, |
280 | unsigned int periods, unsigned int fragsize) | |
281 | { | |
282 | unsigned int i, idx, ofs, rest; | |
e437e3d7 | 283 | struct via82xx_modem *chip = snd_pcm_substream_chip(substream); |
1da177e4 LT |
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) { | |
6da2ec56 KC |
295 | dev->idx_table = kmalloc_array(VIA_TABLE_SIZE, |
296 | sizeof(*dev->idx_table), | |
297 | GFP_KERNEL); | |
1da177e4 LT |
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; | |
77a23f26 | 314 | unsigned int addr; |
1da177e4 LT |
315 | |
316 | if (idx >= VIA_TABLE_SIZE) { | |
473439e0 | 317 | dev_err(&pci->dev, "too much table size!\n"); |
1da177e4 LT |
318 | return -EINVAL; |
319 | } | |
77a23f26 TI |
320 | addr = snd_pcm_sgbuf_get_addr(substream, ofs); |
321 | ((u32 *)dev->table.area)[idx << 1] = cpu_to_le32(addr); | |
1da177e4 LT |
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 */ | |
ee419653 | 333 | /* |
473439e0 TI |
334 | dev_dbg(&pci->dev, |
335 | "tbl %d: at %d size %d (rest %d)\n", | |
336 | idx, ofs, r, rest); | |
ee419653 | 337 | */ |
1da177e4 LT |
338 | ((u32 *)dev->table.area)[(idx<<1) + 1] = cpu_to_le32(r | flag); |
339 | dev->idx_table[idx].offset = ofs; | |
340 | dev->idx_table[idx].size = r; | |
341 | ofs += r; | |
342 | idx++; | |
343 | } while (rest > 0); | |
344 | } | |
345 | dev->tbl_entries = idx; | |
346 | dev->bufsize = periods * fragsize; | |
347 | dev->bufsize2 = dev->bufsize / 2; | |
348 | return 0; | |
349 | } | |
350 | ||
351 | ||
e437e3d7 | 352 | static int clean_via_table(struct viadev *dev, struct snd_pcm_substream *substream, |
1da177e4 LT |
353 | struct pci_dev *pci) |
354 | { | |
355 | if (dev->table.area) { | |
356 | snd_dma_free_pages(&dev->table); | |
357 | dev->table.area = NULL; | |
358 | } | |
4d572776 JJ |
359 | kfree(dev->idx_table); |
360 | dev->idx_table = NULL; | |
1da177e4 LT |
361 | return 0; |
362 | } | |
363 | ||
364 | /* | |
365 | * Basic I/O | |
366 | */ | |
367 | ||
e437e3d7 | 368 | static inline unsigned int snd_via82xx_codec_xread(struct via82xx_modem *chip) |
1da177e4 LT |
369 | { |
370 | return inl(VIAREG(chip, AC97)); | |
371 | } | |
372 | ||
e437e3d7 | 373 | static inline void snd_via82xx_codec_xwrite(struct via82xx_modem *chip, unsigned int val) |
1da177e4 LT |
374 | { |
375 | outl(val, VIAREG(chip, AC97)); | |
376 | } | |
377 | ||
e437e3d7 | 378 | static int snd_via82xx_codec_ready(struct via82xx_modem *chip, int secondary) |
1da177e4 LT |
379 | { |
380 | unsigned int timeout = 1000; /* 1ms */ | |
381 | unsigned int val; | |
382 | ||
383 | while (timeout-- > 0) { | |
384 | udelay(1); | |
385 | if (!((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY)) | |
386 | return val & 0xffff; | |
387 | } | |
473439e0 | 388 | dev_err(chip->card->dev, "codec_ready: codec %i is not ready [0x%x]\n", |
e437e3d7 | 389 | secondary, snd_via82xx_codec_xread(chip)); |
1da177e4 LT |
390 | return -EIO; |
391 | } | |
392 | ||
e437e3d7 | 393 | static int snd_via82xx_codec_valid(struct via82xx_modem *chip, int secondary) |
1da177e4 LT |
394 | { |
395 | unsigned int timeout = 1000; /* 1ms */ | |
396 | unsigned int val, val1; | |
397 | unsigned int stat = !secondary ? VIA_REG_AC97_PRIMARY_VALID : | |
398 | VIA_REG_AC97_SECONDARY_VALID; | |
399 | ||
400 | while (timeout-- > 0) { | |
401 | val = snd_via82xx_codec_xread(chip); | |
402 | val1 = val & (VIA_REG_AC97_BUSY | stat); | |
403 | if (val1 == stat) | |
404 | return val & 0xffff; | |
405 | udelay(1); | |
406 | } | |
407 | return -EIO; | |
408 | } | |
409 | ||
e437e3d7 | 410 | static void snd_via82xx_codec_wait(struct snd_ac97 *ac97) |
1da177e4 | 411 | { |
e437e3d7 | 412 | struct via82xx_modem *chip = ac97->private_data; |
1da177e4 LT |
413 | int err; |
414 | err = snd_via82xx_codec_ready(chip, ac97->num); | |
415 | /* here we need to wait fairly for long time.. */ | |
ef21ca24 | 416 | msleep(500); |
1da177e4 LT |
417 | } |
418 | ||
e437e3d7 | 419 | static void snd_via82xx_codec_write(struct snd_ac97 *ac97, |
1da177e4 LT |
420 | unsigned short reg, |
421 | unsigned short val) | |
422 | { | |
e437e3d7 | 423 | struct via82xx_modem *chip = ac97->private_data; |
1da177e4 | 424 | unsigned int xval; |
83a5b72a SK |
425 | if(reg == AC97_GPIO_STATUS) { |
426 | outl(val, VIAREG(chip, GPI_STATUS)); | |
427 | return; | |
428 | } | |
1da177e4 LT |
429 | xval = !ac97->num ? VIA_REG_AC97_CODEC_ID_PRIMARY : VIA_REG_AC97_CODEC_ID_SECONDARY; |
430 | xval <<= VIA_REG_AC97_CODEC_ID_SHIFT; | |
431 | xval |= reg << VIA_REG_AC97_CMD_SHIFT; | |
432 | xval |= val << VIA_REG_AC97_DATA_SHIFT; | |
433 | snd_via82xx_codec_xwrite(chip, xval); | |
434 | snd_via82xx_codec_ready(chip, ac97->num); | |
435 | } | |
436 | ||
e437e3d7 | 437 | static unsigned short snd_via82xx_codec_read(struct snd_ac97 *ac97, unsigned short reg) |
1da177e4 | 438 | { |
e437e3d7 | 439 | struct via82xx_modem *chip = ac97->private_data; |
1da177e4 LT |
440 | unsigned int xval, val = 0xffff; |
441 | int again = 0; | |
442 | ||
443 | xval = ac97->num << VIA_REG_AC97_CODEC_ID_SHIFT; | |
444 | xval |= ac97->num ? VIA_REG_AC97_SECONDARY_VALID : VIA_REG_AC97_PRIMARY_VALID; | |
445 | xval |= VIA_REG_AC97_READ; | |
446 | xval |= (reg & 0x7f) << VIA_REG_AC97_CMD_SHIFT; | |
447 | while (1) { | |
448 | if (again++ > 3) { | |
473439e0 TI |
449 | dev_err(chip->card->dev, |
450 | "codec_read: codec %i is not valid [0x%x]\n", | |
e437e3d7 | 451 | ac97->num, snd_via82xx_codec_xread(chip)); |
1da177e4 LT |
452 | return 0xffff; |
453 | } | |
454 | snd_via82xx_codec_xwrite(chip, xval); | |
455 | udelay (20); | |
456 | if (snd_via82xx_codec_valid(chip, ac97->num) >= 0) { | |
457 | udelay(25); | |
458 | val = snd_via82xx_codec_xread(chip); | |
459 | break; | |
460 | } | |
461 | } | |
462 | return val & 0xffff; | |
463 | } | |
464 | ||
e437e3d7 | 465 | static void snd_via82xx_channel_reset(struct via82xx_modem *chip, struct viadev *viadev) |
1da177e4 LT |
466 | { |
467 | outb(VIA_REG_CTRL_PAUSE | VIA_REG_CTRL_TERMINATE | VIA_REG_CTRL_RESET, | |
468 | VIADEV_REG(viadev, OFFSET_CONTROL)); | |
469 | inb(VIADEV_REG(viadev, OFFSET_CONTROL)); | |
470 | udelay(50); | |
471 | /* disable interrupts */ | |
472 | outb(0x00, VIADEV_REG(viadev, OFFSET_CONTROL)); | |
473 | /* clear interrupts */ | |
474 | outb(0x03, VIADEV_REG(viadev, OFFSET_STATUS)); | |
475 | outb(0x00, VIADEV_REG(viadev, OFFSET_TYPE)); /* for via686 */ | |
476 | // outl(0, VIADEV_REG(viadev, OFFSET_CURR_PTR)); | |
477 | viadev->lastpos = 0; | |
478 | } | |
479 | ||
480 | ||
481 | /* | |
482 | * Interrupt handler | |
483 | */ | |
484 | ||
7d12e780 | 485 | static irqreturn_t snd_via82xx_interrupt(int irq, void *dev_id) |
1da177e4 | 486 | { |
e437e3d7 | 487 | struct via82xx_modem *chip = dev_id; |
1da177e4 LT |
488 | unsigned int status; |
489 | unsigned int i; | |
490 | ||
491 | status = inl(VIAREG(chip, SGD_SHADOW)); | |
492 | if (! (status & chip->intr_mask)) { | |
493 | return IRQ_NONE; | |
494 | } | |
495 | // _skip_sgd: | |
496 | ||
497 | /* check status for each stream */ | |
498 | spin_lock(&chip->reg_lock); | |
499 | for (i = 0; i < chip->num_devs; i++) { | |
e437e3d7 | 500 | struct viadev *viadev = &chip->devs[i]; |
1da177e4 LT |
501 | unsigned char c_status = inb(VIADEV_REG(viadev, OFFSET_STATUS)); |
502 | c_status &= (VIA_REG_STAT_EOL|VIA_REG_STAT_FLAG|VIA_REG_STAT_STOPPED); | |
503 | if (! c_status) | |
504 | continue; | |
505 | if (viadev->substream && viadev->running) { | |
506 | spin_unlock(&chip->reg_lock); | |
507 | snd_pcm_period_elapsed(viadev->substream); | |
508 | spin_lock(&chip->reg_lock); | |
509 | } | |
510 | outb(c_status, VIADEV_REG(viadev, OFFSET_STATUS)); /* ack */ | |
511 | } | |
512 | spin_unlock(&chip->reg_lock); | |
513 | return IRQ_HANDLED; | |
514 | } | |
515 | ||
516 | /* | |
517 | * PCM callbacks | |
518 | */ | |
519 | ||
520 | /* | |
521 | * trigger callback | |
522 | */ | |
e437e3d7 | 523 | static int snd_via82xx_pcm_trigger(struct snd_pcm_substream *substream, int cmd) |
1da177e4 | 524 | { |
e437e3d7 TI |
525 | struct via82xx_modem *chip = snd_pcm_substream_chip(substream); |
526 | struct viadev *viadev = substream->runtime->private_data; | |
1da177e4 LT |
527 | unsigned char val = 0; |
528 | ||
529 | switch (cmd) { | |
530 | case SNDRV_PCM_TRIGGER_START: | |
41e4845c | 531 | case SNDRV_PCM_TRIGGER_SUSPEND: |
1da177e4 LT |
532 | val |= VIA_REG_CTRL_START; |
533 | viadev->running = 1; | |
534 | break; | |
535 | case SNDRV_PCM_TRIGGER_STOP: | |
536 | val = VIA_REG_CTRL_TERMINATE; | |
537 | viadev->running = 0; | |
538 | break; | |
539 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: | |
540 | val |= VIA_REG_CTRL_PAUSE; | |
541 | viadev->running = 0; | |
542 | break; | |
543 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: | |
544 | viadev->running = 1; | |
545 | break; | |
546 | default: | |
547 | return -EINVAL; | |
548 | } | |
549 | outb(val, VIADEV_REG(viadev, OFFSET_CONTROL)); | |
550 | if (cmd == SNDRV_PCM_TRIGGER_STOP) | |
551 | snd_via82xx_channel_reset(chip, viadev); | |
552 | return 0; | |
553 | } | |
554 | ||
1da177e4 LT |
555 | /* |
556 | * pointer callbacks | |
557 | */ | |
558 | ||
559 | /* | |
560 | * calculate the linear position at the given sg-buffer index and the rest count | |
561 | */ | |
562 | ||
563 | #define check_invalid_pos(viadev,pos) \ | |
e437e3d7 TI |
564 | ((pos) < viadev->lastpos && ((pos) >= viadev->bufsize2 ||\ |
565 | viadev->lastpos < viadev->bufsize2)) | |
1da177e4 | 566 | |
473439e0 TI |
567 | static inline unsigned int calc_linear_pos(struct via82xx_modem *chip, |
568 | struct viadev *viadev, | |
569 | unsigned int idx, | |
e437e3d7 | 570 | unsigned int count) |
1da177e4 LT |
571 | { |
572 | unsigned int size, res; | |
573 | ||
574 | size = viadev->idx_table[idx].size; | |
575 | res = viadev->idx_table[idx].offset + size - count; | |
576 | ||
577 | /* check the validity of the calculated position */ | |
578 | if (size < count) { | |
473439e0 TI |
579 | dev_err(chip->card->dev, |
580 | "invalid via82xx_cur_ptr (size = %d, count = %d)\n", | |
e437e3d7 | 581 | (int)size, (int)count); |
1da177e4 LT |
582 | res = viadev->lastpos; |
583 | } else if (check_invalid_pos(viadev, res)) { | |
584 | #ifdef POINTER_DEBUG | |
473439e0 TI |
585 | dev_dbg(chip->card->dev, |
586 | "fail: idx = %i/%i, lastpos = 0x%x, bufsize2 = 0x%x, offsize = 0x%x, size = 0x%x, count = 0x%x\n", | |
587 | idx, viadev->tbl_entries, viadev->lastpos, | |
e437e3d7 TI |
588 | viadev->bufsize2, viadev->idx_table[idx].offset, |
589 | viadev->idx_table[idx].size, count); | |
1da177e4 LT |
590 | #endif |
591 | if (count && size < count) { | |
473439e0 TI |
592 | dev_dbg(chip->card->dev, |
593 | "invalid via82xx_cur_ptr, using last valid pointer\n"); | |
1da177e4 LT |
594 | res = viadev->lastpos; |
595 | } else { | |
596 | if (! count) | |
597 | /* bogus count 0 on the DMA boundary? */ | |
598 | res = viadev->idx_table[idx].offset; | |
599 | else | |
e437e3d7 TI |
600 | /* count register returns full size |
601 | * when end of buffer is reached | |
602 | */ | |
1da177e4 LT |
603 | res = viadev->idx_table[idx].offset + size; |
604 | if (check_invalid_pos(viadev, res)) { | |
473439e0 TI |
605 | dev_dbg(chip->card->dev, |
606 | "invalid via82xx_cur_ptr (2), using last valid pointer\n"); | |
1da177e4 LT |
607 | res = viadev->lastpos; |
608 | } | |
609 | } | |
610 | } | |
611 | viadev->lastpos = res; /* remember the last position */ | |
612 | if (res >= viadev->bufsize) | |
613 | res -= viadev->bufsize; | |
614 | return res; | |
615 | } | |
616 | ||
617 | /* | |
618 | * get the current pointer on via686 | |
619 | */ | |
e437e3d7 | 620 | static snd_pcm_uframes_t snd_via686_pcm_pointer(struct snd_pcm_substream *substream) |
1da177e4 | 621 | { |
e437e3d7 TI |
622 | struct via82xx_modem *chip = snd_pcm_substream_chip(substream); |
623 | struct viadev *viadev = substream->runtime->private_data; | |
1da177e4 LT |
624 | unsigned int idx, ptr, count, res; |
625 | ||
da3cec35 TI |
626 | if (snd_BUG_ON(!viadev->tbl_entries)) |
627 | return 0; | |
1da177e4 LT |
628 | if (!(inb(VIADEV_REG(viadev, OFFSET_STATUS)) & VIA_REG_STAT_ACTIVE)) |
629 | return 0; | |
630 | ||
631 | spin_lock(&chip->reg_lock); | |
632 | count = inl(VIADEV_REG(viadev, OFFSET_CURR_COUNT)) & 0xffffff; | |
633 | /* The via686a does not have the current index register, | |
634 | * so we need to calculate the index from CURR_PTR. | |
635 | */ | |
636 | ptr = inl(VIADEV_REG(viadev, OFFSET_CURR_PTR)); | |
637 | if (ptr <= (unsigned int)viadev->table.addr) | |
638 | idx = 0; | |
639 | else /* CURR_PTR holds the address + 8 */ | |
e437e3d7 TI |
640 | idx = ((ptr - (unsigned int)viadev->table.addr) / 8 - 1) % |
641 | viadev->tbl_entries; | |
473439e0 | 642 | res = calc_linear_pos(chip, viadev, idx, count); |
1da177e4 LT |
643 | spin_unlock(&chip->reg_lock); |
644 | ||
645 | return bytes_to_frames(substream->runtime, res); | |
646 | } | |
647 | ||
648 | /* | |
649 | * hw_params callback: | |
650 | * allocate the buffer and build up the buffer description table | |
651 | */ | |
e437e3d7 TI |
652 | static int snd_via82xx_hw_params(struct snd_pcm_substream *substream, |
653 | struct snd_pcm_hw_params *hw_params) | |
1da177e4 | 654 | { |
e437e3d7 TI |
655 | struct via82xx_modem *chip = snd_pcm_substream_chip(substream); |
656 | struct viadev *viadev = substream->runtime->private_data; | |
1da177e4 LT |
657 | int err; |
658 | ||
659 | err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params)); | |
660 | if (err < 0) | |
661 | return err; | |
662 | err = build_via_table(viadev, substream, chip->pci, | |
663 | params_periods(hw_params), | |
664 | params_period_bytes(hw_params)); | |
665 | if (err < 0) | |
666 | return err; | |
667 | ||
668 | snd_ac97_write(chip->ac97, AC97_LINE1_RATE, params_rate(hw_params)); | |
669 | snd_ac97_write(chip->ac97, AC97_LINE1_LEVEL, 0); | |
670 | ||
671 | return 0; | |
672 | } | |
673 | ||
674 | /* | |
675 | * hw_free callback: | |
676 | * clean up the buffer description table and release the buffer | |
677 | */ | |
e437e3d7 | 678 | static int snd_via82xx_hw_free(struct snd_pcm_substream *substream) |
1da177e4 | 679 | { |
e437e3d7 TI |
680 | struct via82xx_modem *chip = snd_pcm_substream_chip(substream); |
681 | struct viadev *viadev = substream->runtime->private_data; | |
1da177e4 LT |
682 | |
683 | clean_via_table(viadev, substream, chip->pci); | |
684 | snd_pcm_lib_free_pages(substream); | |
685 | return 0; | |
686 | } | |
687 | ||
688 | ||
689 | /* | |
690 | * set up the table pointer | |
691 | */ | |
e437e3d7 | 692 | static void snd_via82xx_set_table_ptr(struct via82xx_modem *chip, struct viadev *viadev) |
1da177e4 LT |
693 | { |
694 | snd_via82xx_codec_ready(chip, chip->ac97_secondary); | |
695 | outl((u32)viadev->table.addr, VIADEV_REG(viadev, OFFSET_TABLE_PTR)); | |
696 | udelay(20); | |
697 | snd_via82xx_codec_ready(chip, chip->ac97_secondary); | |
698 | } | |
699 | ||
700 | /* | |
701 | * prepare callback for playback and capture | |
702 | */ | |
e437e3d7 | 703 | static int snd_via82xx_pcm_prepare(struct snd_pcm_substream *substream) |
1da177e4 | 704 | { |
e437e3d7 TI |
705 | struct via82xx_modem *chip = snd_pcm_substream_chip(substream); |
706 | struct viadev *viadev = substream->runtime->private_data; | |
1da177e4 LT |
707 | |
708 | snd_via82xx_channel_reset(chip, viadev); | |
709 | /* this must be set after channel_reset */ | |
710 | snd_via82xx_set_table_ptr(chip, viadev); | |
711 | outb(VIA_REG_TYPE_AUTOSTART|VIA_REG_TYPE_INT_EOL|VIA_REG_TYPE_INT_FLAG, | |
712 | VIADEV_REG(viadev, OFFSET_TYPE)); | |
713 | return 0; | |
714 | } | |
715 | ||
716 | /* | |
717 | * pcm hardware definition, identical for both playback and capture | |
718 | */ | |
dee49895 | 719 | static const struct snd_pcm_hardware snd_via82xx_hw = |
1da177e4 LT |
720 | { |
721 | .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED | | |
722 | SNDRV_PCM_INFO_BLOCK_TRANSFER | | |
723 | SNDRV_PCM_INFO_MMAP_VALID | | |
41e4845c | 724 | /* SNDRV_PCM_INFO_RESUME | */ |
1da177e4 LT |
725 | SNDRV_PCM_INFO_PAUSE), |
726 | .formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE, | |
727 | .rates = SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_KNOT, | |
728 | .rate_min = 8000, | |
729 | .rate_max = 16000, | |
730 | .channels_min = 1, | |
731 | .channels_max = 1, | |
732 | .buffer_bytes_max = 128 * 1024, | |
733 | .period_bytes_min = 32, | |
734 | .period_bytes_max = 128 * 1024, | |
735 | .periods_min = 2, | |
736 | .periods_max = VIA_TABLE_SIZE / 2, | |
737 | .fifo_size = 0, | |
738 | }; | |
739 | ||
740 | ||
741 | /* | |
742 | * open callback skeleton | |
743 | */ | |
e437e3d7 TI |
744 | static int snd_via82xx_modem_pcm_open(struct via82xx_modem *chip, struct viadev *viadev, |
745 | struct snd_pcm_substream *substream) | |
1da177e4 | 746 | { |
e437e3d7 | 747 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 | 748 | int err; |
fbc57b2a TI |
749 | static const unsigned int rates[] = { 8000, 9600, 12000, 16000 }; |
750 | static const struct snd_pcm_hw_constraint_list hw_constraints_rates = { | |
1da177e4 LT |
751 | .count = ARRAY_SIZE(rates), |
752 | .list = rates, | |
753 | .mask = 0, | |
754 | }; | |
755 | ||
756 | runtime->hw = snd_via82xx_hw; | |
757 | ||
e437e3d7 TI |
758 | if ((err = snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, |
759 | &hw_constraints_rates)) < 0) | |
1da177e4 LT |
760 | return err; |
761 | ||
762 | /* we may remove following constaint when we modify table entries | |
763 | in interrupt */ | |
764 | if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0) | |
765 | return err; | |
766 | ||
767 | runtime->private_data = viadev; | |
768 | viadev->substream = substream; | |
769 | ||
770 | return 0; | |
771 | } | |
772 | ||
773 | ||
774 | /* | |
775 | * open callback for playback | |
776 | */ | |
e437e3d7 | 777 | static int snd_via82xx_playback_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->playback_devno + substream->number]; | |
1da177e4 LT |
781 | |
782 | return snd_via82xx_modem_pcm_open(chip, viadev, substream); | |
783 | } | |
784 | ||
785 | /* | |
786 | * open callback for capture | |
787 | */ | |
e437e3d7 | 788 | static int snd_via82xx_capture_open(struct snd_pcm_substream *substream) |
1da177e4 | 789 | { |
e437e3d7 TI |
790 | struct via82xx_modem *chip = snd_pcm_substream_chip(substream); |
791 | struct viadev *viadev = &chip->devs[chip->capture_devno + substream->pcm->device]; | |
1da177e4 LT |
792 | |
793 | return snd_via82xx_modem_pcm_open(chip, viadev, substream); | |
794 | } | |
795 | ||
796 | /* | |
797 | * close callback | |
798 | */ | |
e437e3d7 | 799 | static int snd_via82xx_pcm_close(struct snd_pcm_substream *substream) |
1da177e4 | 800 | { |
e437e3d7 | 801 | struct viadev *viadev = substream->runtime->private_data; |
1da177e4 LT |
802 | |
803 | viadev->substream = NULL; | |
804 | return 0; | |
805 | } | |
806 | ||
807 | ||
808 | /* via686 playback callbacks */ | |
6769e988 | 809 | static const struct snd_pcm_ops snd_via686_playback_ops = { |
1da177e4 LT |
810 | .open = snd_via82xx_playback_open, |
811 | .close = snd_via82xx_pcm_close, | |
812 | .ioctl = snd_pcm_lib_ioctl, | |
813 | .hw_params = snd_via82xx_hw_params, | |
814 | .hw_free = snd_via82xx_hw_free, | |
815 | .prepare = snd_via82xx_pcm_prepare, | |
83a5b72a | 816 | .trigger = snd_via82xx_pcm_trigger, |
1da177e4 LT |
817 | .pointer = snd_via686_pcm_pointer, |
818 | .page = snd_pcm_sgbuf_ops_page, | |
819 | }; | |
820 | ||
821 | /* via686 capture callbacks */ | |
6769e988 | 822 | static const struct snd_pcm_ops snd_via686_capture_ops = { |
1da177e4 LT |
823 | .open = snd_via82xx_capture_open, |
824 | .close = snd_via82xx_pcm_close, | |
825 | .ioctl = snd_pcm_lib_ioctl, | |
826 | .hw_params = snd_via82xx_hw_params, | |
827 | .hw_free = snd_via82xx_hw_free, | |
828 | .prepare = snd_via82xx_pcm_prepare, | |
83a5b72a | 829 | .trigger = snd_via82xx_pcm_trigger, |
1da177e4 LT |
830 | .pointer = snd_via686_pcm_pointer, |
831 | .page = snd_pcm_sgbuf_ops_page, | |
832 | }; | |
833 | ||
834 | ||
e437e3d7 TI |
835 | static void init_viadev(struct via82xx_modem *chip, int idx, unsigned int reg_offset, |
836 | int direction) | |
1da177e4 LT |
837 | { |
838 | chip->devs[idx].reg_offset = reg_offset; | |
839 | chip->devs[idx].direction = direction; | |
840 | chip->devs[idx].port = chip->port + reg_offset; | |
841 | } | |
842 | ||
843 | /* | |
844 | * create a pcm instance for via686a/b | |
845 | */ | |
e23e7a14 | 846 | static int snd_via686_pcm_new(struct via82xx_modem *chip) |
1da177e4 | 847 | { |
e437e3d7 | 848 | struct snd_pcm *pcm; |
1da177e4 LT |
849 | int err; |
850 | ||
851 | chip->playback_devno = 0; | |
852 | chip->capture_devno = 1; | |
853 | chip->num_devs = 2; | |
854 | chip->intr_mask = 0x330000; /* FLAGS | EOL for MR, MW */ | |
855 | ||
856 | err = snd_pcm_new(chip->card, chip->card->shortname, 0, 1, 1, &pcm); | |
857 | if (err < 0) | |
858 | return err; | |
859 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via686_playback_ops); | |
860 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via686_capture_ops); | |
6632d198 | 861 | pcm->dev_class = SNDRV_PCM_CLASS_MODEM; |
1da177e4 LT |
862 | pcm->private_data = chip; |
863 | strcpy(pcm->name, chip->card->shortname); | |
864 | chip->pcms[0] = pcm; | |
865 | init_viadev(chip, 0, VIA_REG_MO_STATUS, 0); | |
866 | init_viadev(chip, 1, VIA_REG_MI_STATUS, 1); | |
867 | ||
5116b94a TI |
868 | snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG, |
869 | snd_dma_pci_data(chip->pci), | |
870 | 64*1024, 128*1024); | |
1da177e4 LT |
871 | return 0; |
872 | } | |
873 | ||
874 | ||
875 | /* | |
876 | * Mixer part | |
877 | */ | |
878 | ||
879 | ||
e437e3d7 | 880 | static void snd_via82xx_mixer_free_ac97_bus(struct snd_ac97_bus *bus) |
1da177e4 | 881 | { |
e437e3d7 | 882 | struct via82xx_modem *chip = bus->private_data; |
1da177e4 LT |
883 | chip->ac97_bus = NULL; |
884 | } | |
885 | ||
e437e3d7 | 886 | static void snd_via82xx_mixer_free_ac97(struct snd_ac97 *ac97) |
1da177e4 | 887 | { |
e437e3d7 | 888 | struct via82xx_modem *chip = ac97->private_data; |
1da177e4 LT |
889 | chip->ac97 = NULL; |
890 | } | |
891 | ||
892 | ||
e23e7a14 | 893 | static int snd_via82xx_mixer_new(struct via82xx_modem *chip) |
1da177e4 | 894 | { |
e437e3d7 | 895 | struct snd_ac97_template ac97; |
1da177e4 | 896 | int err; |
e437e3d7 | 897 | static struct snd_ac97_bus_ops ops = { |
1da177e4 LT |
898 | .write = snd_via82xx_codec_write, |
899 | .read = snd_via82xx_codec_read, | |
900 | .wait = snd_via82xx_codec_wait, | |
901 | }; | |
902 | ||
903 | if ((err = snd_ac97_bus(chip->card, 0, &ops, chip, &chip->ac97_bus)) < 0) | |
904 | return err; | |
905 | chip->ac97_bus->private_free = snd_via82xx_mixer_free_ac97_bus; | |
906 | chip->ac97_bus->clock = chip->ac97_clock; | |
1da177e4 LT |
907 | |
908 | memset(&ac97, 0, sizeof(ac97)); | |
909 | ac97.private_data = chip; | |
910 | ac97.private_free = snd_via82xx_mixer_free_ac97; | |
911 | ac97.pci = chip->pci; | |
f1a63a38 | 912 | ac97.scaps = AC97_SCAP_SKIP_AUDIO | AC97_SCAP_POWER_SAVE; |
1da177e4 LT |
913 | ac97.num = chip->ac97_secondary; |
914 | ||
915 | if ((err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97)) < 0) | |
916 | return err; | |
917 | ||
918 | return 0; | |
919 | } | |
920 | ||
921 | ||
922 | /* | |
923 | * proc interface | |
924 | */ | |
e437e3d7 | 925 | static void snd_via82xx_proc_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer) |
1da177e4 | 926 | { |
e437e3d7 | 927 | struct via82xx_modem *chip = entry->private_data; |
1da177e4 LT |
928 | int i; |
929 | ||
930 | snd_iprintf(buffer, "%s\n\n", chip->card->longname); | |
931 | for (i = 0; i < 0xa0; i += 4) { | |
932 | snd_iprintf(buffer, "%02x: %08x\n", i, inl(chip->port + i)); | |
933 | } | |
934 | } | |
935 | ||
e23e7a14 | 936 | static void snd_via82xx_proc_init(struct via82xx_modem *chip) |
1da177e4 | 937 | { |
47f2769b TI |
938 | snd_card_ro_proc_new(chip->card, "via82xx", chip, |
939 | snd_via82xx_proc_read); | |
1da177e4 LT |
940 | } |
941 | ||
942 | /* | |
943 | * | |
944 | */ | |
945 | ||
e437e3d7 | 946 | static int snd_via82xx_chip_init(struct via82xx_modem *chip) |
1da177e4 LT |
947 | { |
948 | unsigned int val; | |
ef21ca24 | 949 | unsigned long end_time; |
1da177e4 LT |
950 | unsigned char pval; |
951 | ||
952 | pci_read_config_byte(chip->pci, VIA_MC97_CTRL, &pval); | |
953 | if((pval & VIA_MC97_CTRL_INIT) != VIA_MC97_CTRL_INIT) { | |
954 | pci_write_config_byte(chip->pci, 0x44, pval|VIA_MC97_CTRL_INIT); | |
955 | udelay(100); | |
956 | } | |
957 | ||
958 | pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval); | |
959 | if (! (pval & VIA_ACLINK_C00_READY)) { /* codec not ready? */ | |
960 | /* deassert ACLink reset, force SYNC */ | |
961 | pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, | |
962 | VIA_ACLINK_CTRL_ENABLE | | |
963 | VIA_ACLINK_CTRL_RESET | | |
964 | VIA_ACLINK_CTRL_SYNC); | |
965 | udelay(100); | |
966 | #if 1 /* FIXME: should we do full reset here for all chip models? */ | |
967 | pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, 0x00); | |
968 | udelay(100); | |
969 | #else | |
970 | /* deassert ACLink reset, force SYNC (warm AC'97 reset) */ | |
971 | pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, | |
972 | VIA_ACLINK_CTRL_RESET|VIA_ACLINK_CTRL_SYNC); | |
973 | udelay(2); | |
974 | #endif | |
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 | pci_read_config_byte(chip->pci, VIA_ACLINK_CTRL, &pval); | |
981 | if ((pval & VIA_ACLINK_CTRL_INIT) != VIA_ACLINK_CTRL_INIT) { | |
982 | /* ACLink on, deassert ACLink reset, VSR, SGD data out */ | |
983 | pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT); | |
984 | udelay(100); | |
985 | } | |
986 | ||
987 | /* wait until codec ready */ | |
ef21ca24 | 988 | end_time = jiffies + msecs_to_jiffies(750); |
1da177e4 LT |
989 | do { |
990 | pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval); | |
991 | if (pval & VIA_ACLINK_C00_READY) /* primary codec ready */ | |
992 | break; | |
d86d0193 | 993 | schedule_timeout_uninterruptible(1); |
ef21ca24 | 994 | } while (time_before(jiffies, end_time)); |
1da177e4 LT |
995 | |
996 | if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY) | |
473439e0 TI |
997 | dev_err(chip->card->dev, |
998 | "AC'97 codec is not ready [0x%x]\n", val); | |
1da177e4 LT |
999 | |
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)); | |
ef21ca24 | 1003 | end_time = jiffies + msecs_to_jiffies(750); |
1da177e4 LT |
1004 | snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ | |
1005 | VIA_REG_AC97_SECONDARY_VALID | | |
1006 | (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT)); | |
1007 | do { | |
1008 | if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_SECONDARY_VALID) { | |
1009 | chip->ac97_secondary = 1; | |
1010 | goto __ac97_ok2; | |
1011 | } | |
d86d0193 | 1012 | schedule_timeout_uninterruptible(1); |
ef21ca24 | 1013 | } while (time_before(jiffies, end_time)); |
1da177e4 LT |
1014 | /* This is ok, the most of motherboards have only one codec */ |
1015 | ||
1016 | __ac97_ok2: | |
1017 | ||
1018 | /* route FM trap to IRQ, disable FM trap */ | |
1019 | // pci_write_config_byte(chip->pci, VIA_FM_NMI_CTRL, 0); | |
1020 | /* disable all GPI interrupts */ | |
1021 | outl(0, VIAREG(chip, GPI_INTR)); | |
1022 | ||
1023 | return 0; | |
1024 | } | |
1025 | ||
c7561cd8 | 1026 | #ifdef CONFIG_PM_SLEEP |
1da177e4 LT |
1027 | /* |
1028 | * power management | |
1029 | */ | |
68cb2b55 | 1030 | static int snd_via82xx_suspend(struct device *dev) |
1da177e4 | 1031 | { |
68cb2b55 | 1032 | struct snd_card *card = dev_get_drvdata(dev); |
57feb835 | 1033 | struct via82xx_modem *chip = card->private_data; |
1da177e4 LT |
1034 | int i; |
1035 | ||
57feb835 | 1036 | snd_power_change_state(card, SNDRV_CTL_POWER_D3hot); |
1da177e4 LT |
1037 | for (i = 0; i < chip->num_devs; i++) |
1038 | snd_via82xx_channel_reset(chip, &chip->devs[i]); | |
1039 | synchronize_irq(chip->irq); | |
1040 | snd_ac97_suspend(chip->ac97); | |
1da177e4 LT |
1041 | return 0; |
1042 | } | |
1043 | ||
68cb2b55 | 1044 | static int snd_via82xx_resume(struct device *dev) |
1da177e4 | 1045 | { |
68cb2b55 | 1046 | struct snd_card *card = dev_get_drvdata(dev); |
57feb835 | 1047 | struct via82xx_modem *chip = card->private_data; |
1da177e4 LT |
1048 | int i; |
1049 | ||
1da177e4 LT |
1050 | snd_via82xx_chip_init(chip); |
1051 | ||
1052 | snd_ac97_resume(chip->ac97); | |
1053 | ||
1054 | for (i = 0; i < chip->num_devs; i++) | |
1055 | snd_via82xx_channel_reset(chip, &chip->devs[i]); | |
1056 | ||
57feb835 | 1057 | snd_power_change_state(card, SNDRV_CTL_POWER_D0); |
1da177e4 LT |
1058 | return 0; |
1059 | } | |
68cb2b55 TI |
1060 | |
1061 | static SIMPLE_DEV_PM_OPS(snd_via82xx_pm, snd_via82xx_suspend, snd_via82xx_resume); | |
1062 | #define SND_VIA82XX_PM_OPS &snd_via82xx_pm | |
1063 | #else | |
1064 | #define SND_VIA82XX_PM_OPS NULL | |
c7561cd8 | 1065 | #endif /* CONFIG_PM_SLEEP */ |
1da177e4 | 1066 | |
e437e3d7 | 1067 | static int snd_via82xx_free(struct via82xx_modem *chip) |
1da177e4 LT |
1068 | { |
1069 | unsigned int i; | |
1070 | ||
1071 | if (chip->irq < 0) | |
1072 | goto __end_hw; | |
1073 | /* disable interrupts */ | |
1074 | for (i = 0; i < chip->num_devs; i++) | |
1075 | snd_via82xx_channel_reset(chip, &chip->devs[i]); | |
f000fd80 | 1076 | |
1da177e4 LT |
1077 | __end_hw: |
1078 | if (chip->irq >= 0) | |
e437e3d7 | 1079 | free_irq(chip->irq, chip); |
1da177e4 LT |
1080 | pci_release_regions(chip->pci); |
1081 | pci_disable_device(chip->pci); | |
1082 | kfree(chip); | |
1083 | return 0; | |
1084 | } | |
1085 | ||
e437e3d7 | 1086 | static int snd_via82xx_dev_free(struct snd_device *device) |
1da177e4 | 1087 | { |
e437e3d7 | 1088 | struct via82xx_modem *chip = device->device_data; |
1da177e4 LT |
1089 | return snd_via82xx_free(chip); |
1090 | } | |
1091 | ||
e23e7a14 BP |
1092 | static int snd_via82xx_create(struct snd_card *card, |
1093 | struct pci_dev *pci, | |
1094 | int chip_type, | |
1095 | int revision, | |
1096 | unsigned int ac97_clock, | |
1097 | struct via82xx_modem **r_via) | |
1da177e4 | 1098 | { |
e437e3d7 | 1099 | struct via82xx_modem *chip; |
1da177e4 | 1100 | int err; |
e437e3d7 | 1101 | static struct snd_device_ops ops = { |
1da177e4 LT |
1102 | .dev_free = snd_via82xx_dev_free, |
1103 | }; | |
1104 | ||
1105 | if ((err = pci_enable_device(pci)) < 0) | |
1106 | return err; | |
1107 | ||
e560d8d8 | 1108 | if ((chip = kzalloc(sizeof(*chip), GFP_KERNEL)) == NULL) { |
1da177e4 LT |
1109 | pci_disable_device(pci); |
1110 | return -ENOMEM; | |
1111 | } | |
1112 | ||
1113 | spin_lock_init(&chip->reg_lock); | |
1114 | chip->card = card; | |
1115 | chip->pci = pci; | |
1116 | chip->irq = -1; | |
1117 | ||
1118 | if ((err = pci_request_regions(pci, card->driver)) < 0) { | |
1119 | kfree(chip); | |
1120 | pci_disable_device(pci); | |
1121 | return err; | |
1122 | } | |
1123 | chip->port = pci_resource_start(pci, 0); | |
437a5a46 | 1124 | if (request_irq(pci->irq, snd_via82xx_interrupt, IRQF_SHARED, |
934c2b6d | 1125 | KBUILD_MODNAME, chip)) { |
473439e0 | 1126 | dev_err(card->dev, "unable to grab IRQ %d\n", pci->irq); |
1da177e4 LT |
1127 | snd_via82xx_free(chip); |
1128 | return -EBUSY; | |
1129 | } | |
1130 | chip->irq = pci->irq; | |
1131 | if (ac97_clock >= 8000 && ac97_clock <= 48000) | |
1132 | chip->ac97_clock = ac97_clock; | |
1133 | synchronize_irq(chip->irq); | |
1134 | ||
1135 | if ((err = snd_via82xx_chip_init(chip)) < 0) { | |
1136 | snd_via82xx_free(chip); | |
1137 | return err; | |
1138 | } | |
1139 | ||
1140 | if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) { | |
1141 | snd_via82xx_free(chip); | |
1142 | return err; | |
1143 | } | |
1144 | ||
1145 | /* The 8233 ac97 controller does not implement the master bit | |
1146 | * in the pci command register. IMHO this is a violation of the PCI spec. | |
1147 | * We call pci_set_master here because it does not hurt. */ | |
1148 | pci_set_master(pci); | |
1149 | ||
1da177e4 LT |
1150 | *r_via = chip; |
1151 | return 0; | |
1152 | } | |
1153 | ||
1154 | ||
e23e7a14 BP |
1155 | static int snd_via82xx_probe(struct pci_dev *pci, |
1156 | const struct pci_device_id *pci_id) | |
1da177e4 | 1157 | { |
e437e3d7 TI |
1158 | struct snd_card *card; |
1159 | struct via82xx_modem *chip; | |
1da177e4 LT |
1160 | int chip_type = 0, card_type; |
1161 | unsigned int i; | |
1162 | int err; | |
1163 | ||
60c5772b | 1164 | err = snd_card_new(&pci->dev, index, id, THIS_MODULE, 0, &card); |
e58de7ba TI |
1165 | if (err < 0) |
1166 | return err; | |
1da177e4 LT |
1167 | |
1168 | card_type = pci_id->driver_data; | |
1da177e4 LT |
1169 | switch (card_type) { |
1170 | case TYPE_CARD_VIA82XX_MODEM: | |
1171 | strcpy(card->driver, "VIA82XX-MODEM"); | |
1172 | sprintf(card->shortname, "VIA 82XX modem"); | |
1173 | break; | |
1174 | default: | |
473439e0 | 1175 | dev_err(card->dev, "invalid card type %d\n", card_type); |
1da177e4 LT |
1176 | err = -EINVAL; |
1177 | goto __error; | |
1178 | } | |
1179 | ||
44c10138 | 1180 | if ((err = snd_via82xx_create(card, pci, chip_type, pci->revision, |
b7fe4622 | 1181 | ac97_clock, &chip)) < 0) |
1da177e4 | 1182 | goto __error; |
57feb835 | 1183 | card->private_data = chip; |
1da177e4 LT |
1184 | if ((err = snd_via82xx_mixer_new(chip)) < 0) |
1185 | goto __error; | |
1186 | ||
1187 | if ((err = snd_via686_pcm_new(chip)) < 0 ) | |
1188 | goto __error; | |
1189 | ||
1da177e4 LT |
1190 | /* disable interrupts */ |
1191 | for (i = 0; i < chip->num_devs; i++) | |
1192 | snd_via82xx_channel_reset(chip, &chip->devs[i]); | |
1193 | ||
1194 | sprintf(card->longname, "%s at 0x%lx, irq %d", | |
1195 | card->shortname, chip->port, chip->irq); | |
1196 | ||
1197 | snd_via82xx_proc_init(chip); | |
1198 | ||
1199 | if ((err = snd_card_register(card)) < 0) { | |
1200 | snd_card_free(card); | |
1201 | return err; | |
1202 | } | |
1203 | pci_set_drvdata(pci, card); | |
1da177e4 LT |
1204 | return 0; |
1205 | ||
1206 | __error: | |
1207 | snd_card_free(card); | |
1208 | return err; | |
1209 | } | |
1210 | ||
e23e7a14 | 1211 | static void snd_via82xx_remove(struct pci_dev *pci) |
1da177e4 LT |
1212 | { |
1213 | snd_card_free(pci_get_drvdata(pci)); | |
1da177e4 LT |
1214 | } |
1215 | ||
e9f66d9b | 1216 | static struct pci_driver via82xx_modem_driver = { |
3733e424 | 1217 | .name = KBUILD_MODNAME, |
1da177e4 LT |
1218 | .id_table = snd_via82xx_modem_ids, |
1219 | .probe = snd_via82xx_probe, | |
e23e7a14 | 1220 | .remove = snd_via82xx_remove, |
68cb2b55 TI |
1221 | .driver = { |
1222 | .pm = SND_VIA82XX_PM_OPS, | |
1223 | }, | |
1da177e4 LT |
1224 | }; |
1225 | ||
e9f66d9b | 1226 | module_pci_driver(via82xx_modem_driver); |