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862c2c0a TB |
1 | /* |
2 | * Sound driver for Silicon Graphics O2 Workstations A/V board audio. | |
3 | * | |
4 | * Copyright 2003 Vivien Chappelier <vivien.chappelier@linux-mips.org> | |
5 | * Copyright 2008 Thomas Bogendoerfer <tsbogend@alpha.franken.de> | |
6 | * Mxier part taken from mace_audio.c: | |
7 | * Copyright 2007 Thorben Jändling <tj.trevelyan@gmail.com> | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License as published by | |
11 | * the Free Software Foundation; either version 2 of the License, or | |
12 | * (at your option) any later version. | |
13 | * | |
14 | * This program is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | * GNU General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU General Public License | |
20 | * along with this program; if not, write to the Free Software | |
21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
22 | * | |
23 | */ | |
24 | ||
25 | #include <linux/init.h> | |
26 | #include <linux/delay.h> | |
27 | #include <linux/spinlock.h> | |
28 | #include <linux/gfp.h> | |
862c2c0a TB |
29 | #include <linux/interrupt.h> |
30 | #include <linux/dma-mapping.h> | |
31 | #include <linux/platform_device.h> | |
32 | #include <linux/io.h> | |
33 | ||
34 | #include <asm/ip32/ip32_ints.h> | |
35 | #include <asm/ip32/mace.h> | |
36 | ||
37 | #include <sound/core.h> | |
38 | #include <sound/control.h> | |
39 | #include <sound/pcm.h> | |
40 | #define SNDRV_GET_ID | |
41 | #include <sound/initval.h> | |
42 | #include <sound/ad1843.h> | |
43 | ||
44 | ||
45 | MODULE_AUTHOR("Vivien Chappelier <vivien.chappelier@linux-mips.org>"); | |
46 | MODULE_DESCRIPTION("SGI O2 Audio"); | |
47 | MODULE_LICENSE("GPL"); | |
48 | MODULE_SUPPORTED_DEVICE("{{Silicon Graphics, O2 Audio}}"); | |
49 | ||
50 | static int index = SNDRV_DEFAULT_IDX1; /* Index 0-MAX */ | |
51 | static char *id = SNDRV_DEFAULT_STR1; /* ID for this card */ | |
52 | ||
53 | module_param(index, int, 0444); | |
54 | MODULE_PARM_DESC(index, "Index value for SGI O2 soundcard."); | |
55 | module_param(id, charp, 0444); | |
56 | MODULE_PARM_DESC(id, "ID string for SGI O2 soundcard."); | |
57 | ||
58 | ||
59 | #define AUDIO_CONTROL_RESET BIT(0) /* 1: reset audio interface */ | |
60 | #define AUDIO_CONTROL_CODEC_PRESENT BIT(1) /* 1: codec detected */ | |
61 | ||
62 | #define CODEC_CONTROL_WORD_SHIFT 0 | |
63 | #define CODEC_CONTROL_READ BIT(16) | |
64 | #define CODEC_CONTROL_ADDRESS_SHIFT 17 | |
65 | ||
66 | #define CHANNEL_CONTROL_RESET BIT(10) /* 1: reset channel */ | |
67 | #define CHANNEL_DMA_ENABLE BIT(9) /* 1: enable DMA transfer */ | |
68 | #define CHANNEL_INT_THRESHOLD_DISABLED (0 << 5) /* interrupt disabled */ | |
69 | #define CHANNEL_INT_THRESHOLD_25 (1 << 5) /* int on buffer >25% full */ | |
70 | #define CHANNEL_INT_THRESHOLD_50 (2 << 5) /* int on buffer >50% full */ | |
71 | #define CHANNEL_INT_THRESHOLD_75 (3 << 5) /* int on buffer >75% full */ | |
72 | #define CHANNEL_INT_THRESHOLD_EMPTY (4 << 5) /* int on buffer empty */ | |
73 | #define CHANNEL_INT_THRESHOLD_NOT_EMPTY (5 << 5) /* int on buffer !empty */ | |
74 | #define CHANNEL_INT_THRESHOLD_FULL (6 << 5) /* int on buffer empty */ | |
75 | #define CHANNEL_INT_THRESHOLD_NOT_FULL (7 << 5) /* int on buffer !empty */ | |
76 | ||
77 | #define CHANNEL_RING_SHIFT 12 | |
78 | #define CHANNEL_RING_SIZE (1 << CHANNEL_RING_SHIFT) | |
79 | #define CHANNEL_RING_MASK (CHANNEL_RING_SIZE - 1) | |
80 | ||
81 | #define CHANNEL_LEFT_SHIFT 40 | |
82 | #define CHANNEL_RIGHT_SHIFT 8 | |
83 | ||
84 | struct snd_sgio2audio_chan { | |
85 | int idx; | |
86 | struct snd_pcm_substream *substream; | |
87 | int pos; | |
88 | snd_pcm_uframes_t size; | |
89 | spinlock_t lock; | |
90 | }; | |
91 | ||
92 | /* definition of the chip-specific record */ | |
93 | struct snd_sgio2audio { | |
94 | struct snd_card *card; | |
95 | ||
96 | /* codec */ | |
97 | struct snd_ad1843 ad1843; | |
98 | spinlock_t ad1843_lock; | |
99 | ||
100 | /* channels */ | |
101 | struct snd_sgio2audio_chan channel[3]; | |
102 | ||
103 | /* resources */ | |
104 | void *ring_base; | |
105 | dma_addr_t ring_base_dma; | |
106 | }; | |
107 | ||
108 | /* AD1843 access */ | |
109 | ||
110 | /* | |
111 | * read_ad1843_reg returns the current contents of a 16 bit AD1843 register. | |
112 | * | |
113 | * Returns unsigned register value on success, -errno on failure. | |
114 | */ | |
115 | static int read_ad1843_reg(void *priv, int reg) | |
116 | { | |
117 | struct snd_sgio2audio *chip = priv; | |
118 | int val; | |
119 | unsigned long flags; | |
120 | ||
121 | spin_lock_irqsave(&chip->ad1843_lock, flags); | |
122 | ||
123 | writeq((reg << CODEC_CONTROL_ADDRESS_SHIFT) | | |
124 | CODEC_CONTROL_READ, &mace->perif.audio.codec_control); | |
125 | wmb(); | |
126 | val = readq(&mace->perif.audio.codec_control); /* flush bus */ | |
127 | udelay(200); | |
128 | ||
129 | val = readq(&mace->perif.audio.codec_read); | |
130 | ||
131 | spin_unlock_irqrestore(&chip->ad1843_lock, flags); | |
132 | return val; | |
133 | } | |
134 | ||
135 | /* | |
136 | * write_ad1843_reg writes the specified value to a 16 bit AD1843 register. | |
137 | */ | |
138 | static int write_ad1843_reg(void *priv, int reg, int word) | |
139 | { | |
140 | struct snd_sgio2audio *chip = priv; | |
141 | int val; | |
142 | unsigned long flags; | |
143 | ||
144 | spin_lock_irqsave(&chip->ad1843_lock, flags); | |
145 | ||
146 | writeq((reg << CODEC_CONTROL_ADDRESS_SHIFT) | | |
147 | (word << CODEC_CONTROL_WORD_SHIFT), | |
148 | &mace->perif.audio.codec_control); | |
149 | wmb(); | |
150 | val = readq(&mace->perif.audio.codec_control); /* flush bus */ | |
151 | udelay(200); | |
152 | ||
153 | spin_unlock_irqrestore(&chip->ad1843_lock, flags); | |
154 | return 0; | |
155 | } | |
156 | ||
157 | static int sgio2audio_gain_info(struct snd_kcontrol *kcontrol, | |
158 | struct snd_ctl_elem_info *uinfo) | |
159 | { | |
160 | struct snd_sgio2audio *chip = snd_kcontrol_chip(kcontrol); | |
161 | ||
162 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; | |
163 | uinfo->count = 2; | |
164 | uinfo->value.integer.min = 0; | |
165 | uinfo->value.integer.max = ad1843_get_gain_max(&chip->ad1843, | |
166 | (int)kcontrol->private_value); | |
167 | return 0; | |
168 | } | |
169 | ||
170 | static int sgio2audio_gain_get(struct snd_kcontrol *kcontrol, | |
171 | struct snd_ctl_elem_value *ucontrol) | |
172 | { | |
173 | struct snd_sgio2audio *chip = snd_kcontrol_chip(kcontrol); | |
174 | int vol; | |
175 | ||
176 | vol = ad1843_get_gain(&chip->ad1843, (int)kcontrol->private_value); | |
177 | ||
178 | ucontrol->value.integer.value[0] = (vol >> 8) & 0xFF; | |
179 | ucontrol->value.integer.value[1] = vol & 0xFF; | |
180 | ||
181 | return 0; | |
182 | } | |
183 | ||
184 | static int sgio2audio_gain_put(struct snd_kcontrol *kcontrol, | |
185 | struct snd_ctl_elem_value *ucontrol) | |
186 | { | |
187 | struct snd_sgio2audio *chip = snd_kcontrol_chip(kcontrol); | |
188 | int newvol, oldvol; | |
189 | ||
190 | oldvol = ad1843_get_gain(&chip->ad1843, kcontrol->private_value); | |
191 | newvol = (ucontrol->value.integer.value[0] << 8) | | |
192 | ucontrol->value.integer.value[1]; | |
193 | ||
194 | newvol = ad1843_set_gain(&chip->ad1843, kcontrol->private_value, | |
195 | newvol); | |
196 | ||
197 | return newvol != oldvol; | |
198 | } | |
199 | ||
200 | static int sgio2audio_source_info(struct snd_kcontrol *kcontrol, | |
201 | struct snd_ctl_elem_info *uinfo) | |
202 | { | |
203 | static const char *texts[3] = { | |
204 | "Cam Mic", "Mic", "Line" | |
205 | }; | |
206 | uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED; | |
207 | uinfo->count = 1; | |
208 | uinfo->value.enumerated.items = 3; | |
209 | if (uinfo->value.enumerated.item >= 3) | |
210 | uinfo->value.enumerated.item = 1; | |
211 | strcpy(uinfo->value.enumerated.name, | |
212 | texts[uinfo->value.enumerated.item]); | |
213 | return 0; | |
214 | } | |
215 | ||
216 | static int sgio2audio_source_get(struct snd_kcontrol *kcontrol, | |
217 | struct snd_ctl_elem_value *ucontrol) | |
218 | { | |
219 | struct snd_sgio2audio *chip = snd_kcontrol_chip(kcontrol); | |
220 | ||
221 | ucontrol->value.enumerated.item[0] = ad1843_get_recsrc(&chip->ad1843); | |
222 | return 0; | |
223 | } | |
224 | ||
225 | static int sgio2audio_source_put(struct snd_kcontrol *kcontrol, | |
226 | struct snd_ctl_elem_value *ucontrol) | |
227 | { | |
228 | struct snd_sgio2audio *chip = snd_kcontrol_chip(kcontrol); | |
229 | int newsrc, oldsrc; | |
230 | ||
231 | oldsrc = ad1843_get_recsrc(&chip->ad1843); | |
232 | newsrc = ad1843_set_recsrc(&chip->ad1843, | |
233 | ucontrol->value.enumerated.item[0]); | |
234 | ||
235 | return newsrc != oldsrc; | |
236 | } | |
237 | ||
238 | /* dac1/pcm0 mixer control */ | |
239 | static struct snd_kcontrol_new sgio2audio_ctrl_pcm0 __devinitdata = { | |
240 | .iface = SNDRV_CTL_ELEM_IFACE_MIXER, | |
241 | .name = "PCM Playback Volume", | |
242 | .index = 0, | |
243 | .access = SNDRV_CTL_ELEM_ACCESS_READWRITE, | |
244 | .private_value = AD1843_GAIN_PCM_0, | |
245 | .info = sgio2audio_gain_info, | |
246 | .get = sgio2audio_gain_get, | |
247 | .put = sgio2audio_gain_put, | |
248 | }; | |
249 | ||
250 | /* dac2/pcm1 mixer control */ | |
251 | static struct snd_kcontrol_new sgio2audio_ctrl_pcm1 __devinitdata = { | |
252 | .iface = SNDRV_CTL_ELEM_IFACE_MIXER, | |
253 | .name = "PCM Playback Volume", | |
254 | .index = 1, | |
255 | .access = SNDRV_CTL_ELEM_ACCESS_READWRITE, | |
256 | .private_value = AD1843_GAIN_PCM_1, | |
257 | .info = sgio2audio_gain_info, | |
258 | .get = sgio2audio_gain_get, | |
259 | .put = sgio2audio_gain_put, | |
260 | }; | |
261 | ||
262 | /* record level mixer control */ | |
263 | static struct snd_kcontrol_new sgio2audio_ctrl_reclevel __devinitdata = { | |
264 | .iface = SNDRV_CTL_ELEM_IFACE_MIXER, | |
265 | .name = "Capture Volume", | |
266 | .access = SNDRV_CTL_ELEM_ACCESS_READWRITE, | |
267 | .private_value = AD1843_GAIN_RECLEV, | |
268 | .info = sgio2audio_gain_info, | |
269 | .get = sgio2audio_gain_get, | |
270 | .put = sgio2audio_gain_put, | |
271 | }; | |
272 | ||
273 | /* record level source control */ | |
274 | static struct snd_kcontrol_new sgio2audio_ctrl_recsource __devinitdata = { | |
275 | .iface = SNDRV_CTL_ELEM_IFACE_MIXER, | |
276 | .name = "Capture Source", | |
277 | .access = SNDRV_CTL_ELEM_ACCESS_READWRITE, | |
278 | .info = sgio2audio_source_info, | |
279 | .get = sgio2audio_source_get, | |
280 | .put = sgio2audio_source_put, | |
281 | }; | |
282 | ||
283 | /* line mixer control */ | |
284 | static struct snd_kcontrol_new sgio2audio_ctrl_line __devinitdata = { | |
285 | .iface = SNDRV_CTL_ELEM_IFACE_MIXER, | |
286 | .name = "Line Playback Volume", | |
287 | .index = 0, | |
288 | .access = SNDRV_CTL_ELEM_ACCESS_READWRITE, | |
289 | .private_value = AD1843_GAIN_LINE, | |
290 | .info = sgio2audio_gain_info, | |
291 | .get = sgio2audio_gain_get, | |
292 | .put = sgio2audio_gain_put, | |
293 | }; | |
294 | ||
295 | /* cd mixer control */ | |
296 | static struct snd_kcontrol_new sgio2audio_ctrl_cd __devinitdata = { | |
297 | .iface = SNDRV_CTL_ELEM_IFACE_MIXER, | |
298 | .name = "Line Playback Volume", | |
299 | .index = 1, | |
300 | .access = SNDRV_CTL_ELEM_ACCESS_READWRITE, | |
301 | .private_value = AD1843_GAIN_LINE_2, | |
302 | .info = sgio2audio_gain_info, | |
303 | .get = sgio2audio_gain_get, | |
304 | .put = sgio2audio_gain_put, | |
305 | }; | |
306 | ||
307 | /* mic mixer control */ | |
308 | static struct snd_kcontrol_new sgio2audio_ctrl_mic __devinitdata = { | |
309 | .iface = SNDRV_CTL_ELEM_IFACE_MIXER, | |
310 | .name = "Mic Playback Volume", | |
311 | .access = SNDRV_CTL_ELEM_ACCESS_READWRITE, | |
312 | .private_value = AD1843_GAIN_MIC, | |
313 | .info = sgio2audio_gain_info, | |
314 | .get = sgio2audio_gain_get, | |
315 | .put = sgio2audio_gain_put, | |
316 | }; | |
317 | ||
318 | ||
319 | static int __devinit snd_sgio2audio_new_mixer(struct snd_sgio2audio *chip) | |
320 | { | |
321 | int err; | |
322 | ||
323 | err = snd_ctl_add(chip->card, | |
324 | snd_ctl_new1(&sgio2audio_ctrl_pcm0, chip)); | |
325 | if (err < 0) | |
326 | return err; | |
327 | ||
328 | err = snd_ctl_add(chip->card, | |
329 | snd_ctl_new1(&sgio2audio_ctrl_pcm1, chip)); | |
330 | if (err < 0) | |
331 | return err; | |
332 | ||
333 | err = snd_ctl_add(chip->card, | |
334 | snd_ctl_new1(&sgio2audio_ctrl_reclevel, chip)); | |
335 | if (err < 0) | |
336 | return err; | |
337 | ||
338 | err = snd_ctl_add(chip->card, | |
339 | snd_ctl_new1(&sgio2audio_ctrl_recsource, chip)); | |
340 | if (err < 0) | |
341 | return err; | |
342 | err = snd_ctl_add(chip->card, | |
343 | snd_ctl_new1(&sgio2audio_ctrl_line, chip)); | |
344 | if (err < 0) | |
345 | return err; | |
346 | ||
347 | err = snd_ctl_add(chip->card, | |
348 | snd_ctl_new1(&sgio2audio_ctrl_cd, chip)); | |
349 | if (err < 0) | |
350 | return err; | |
351 | ||
352 | err = snd_ctl_add(chip->card, | |
353 | snd_ctl_new1(&sgio2audio_ctrl_mic, chip)); | |
354 | if (err < 0) | |
355 | return err; | |
356 | ||
357 | return 0; | |
358 | } | |
359 | ||
360 | /* low-level audio interface DMA */ | |
361 | ||
362 | /* get data out of bounce buffer, count must be a multiple of 32 */ | |
363 | /* returns 1 if a period has elapsed */ | |
364 | static int snd_sgio2audio_dma_pull_frag(struct snd_sgio2audio *chip, | |
365 | unsigned int ch, unsigned int count) | |
366 | { | |
367 | int ret; | |
368 | unsigned long src_base, src_pos, dst_mask; | |
369 | unsigned char *dst_base; | |
370 | int dst_pos; | |
371 | u64 *src; | |
372 | s16 *dst; | |
373 | u64 x; | |
374 | unsigned long flags; | |
375 | struct snd_pcm_runtime *runtime = chip->channel[ch].substream->runtime; | |
376 | ||
377 | spin_lock_irqsave(&chip->channel[ch].lock, flags); | |
378 | ||
379 | src_base = (unsigned long) chip->ring_base | (ch << CHANNEL_RING_SHIFT); | |
380 | src_pos = readq(&mace->perif.audio.chan[ch].read_ptr); | |
381 | dst_base = runtime->dma_area; | |
382 | dst_pos = chip->channel[ch].pos; | |
383 | dst_mask = frames_to_bytes(runtime, runtime->buffer_size) - 1; | |
384 | ||
385 | /* check if a period has elapsed */ | |
386 | chip->channel[ch].size += (count >> 3); /* in frames */ | |
387 | ret = chip->channel[ch].size >= runtime->period_size; | |
388 | chip->channel[ch].size %= runtime->period_size; | |
389 | ||
390 | while (count) { | |
391 | src = (u64 *)(src_base + src_pos); | |
392 | dst = (s16 *)(dst_base + dst_pos); | |
393 | ||
394 | x = *src; | |
395 | dst[0] = (x >> CHANNEL_LEFT_SHIFT) & 0xffff; | |
396 | dst[1] = (x >> CHANNEL_RIGHT_SHIFT) & 0xffff; | |
397 | ||
398 | src_pos = (src_pos + sizeof(u64)) & CHANNEL_RING_MASK; | |
399 | dst_pos = (dst_pos + 2 * sizeof(s16)) & dst_mask; | |
400 | count -= sizeof(u64); | |
401 | } | |
402 | ||
403 | writeq(src_pos, &mace->perif.audio.chan[ch].read_ptr); /* in bytes */ | |
404 | chip->channel[ch].pos = dst_pos; | |
405 | ||
406 | spin_unlock_irqrestore(&chip->channel[ch].lock, flags); | |
407 | return ret; | |
408 | } | |
409 | ||
410 | /* put some DMA data in bounce buffer, count must be a multiple of 32 */ | |
411 | /* returns 1 if a period has elapsed */ | |
412 | static int snd_sgio2audio_dma_push_frag(struct snd_sgio2audio *chip, | |
413 | unsigned int ch, unsigned int count) | |
414 | { | |
415 | int ret; | |
416 | s64 l, r; | |
417 | unsigned long dst_base, dst_pos, src_mask; | |
418 | unsigned char *src_base; | |
419 | int src_pos; | |
420 | u64 *dst; | |
421 | s16 *src; | |
422 | unsigned long flags; | |
423 | struct snd_pcm_runtime *runtime = chip->channel[ch].substream->runtime; | |
424 | ||
425 | spin_lock_irqsave(&chip->channel[ch].lock, flags); | |
426 | ||
427 | dst_base = (unsigned long)chip->ring_base | (ch << CHANNEL_RING_SHIFT); | |
428 | dst_pos = readq(&mace->perif.audio.chan[ch].write_ptr); | |
429 | src_base = runtime->dma_area; | |
430 | src_pos = chip->channel[ch].pos; | |
431 | src_mask = frames_to_bytes(runtime, runtime->buffer_size) - 1; | |
432 | ||
433 | /* check if a period has elapsed */ | |
434 | chip->channel[ch].size += (count >> 3); /* in frames */ | |
435 | ret = chip->channel[ch].size >= runtime->period_size; | |
436 | chip->channel[ch].size %= runtime->period_size; | |
437 | ||
438 | while (count) { | |
439 | src = (s16 *)(src_base + src_pos); | |
440 | dst = (u64 *)(dst_base + dst_pos); | |
441 | ||
442 | l = src[0]; /* sign extend */ | |
443 | r = src[1]; /* sign extend */ | |
444 | ||
445 | *dst = ((l & 0x00ffffff) << CHANNEL_LEFT_SHIFT) | | |
446 | ((r & 0x00ffffff) << CHANNEL_RIGHT_SHIFT); | |
447 | ||
448 | dst_pos = (dst_pos + sizeof(u64)) & CHANNEL_RING_MASK; | |
449 | src_pos = (src_pos + 2 * sizeof(s16)) & src_mask; | |
450 | count -= sizeof(u64); | |
451 | } | |
452 | ||
453 | writeq(dst_pos, &mace->perif.audio.chan[ch].write_ptr); /* in bytes */ | |
454 | chip->channel[ch].pos = src_pos; | |
455 | ||
456 | spin_unlock_irqrestore(&chip->channel[ch].lock, flags); | |
457 | return ret; | |
458 | } | |
459 | ||
460 | static int snd_sgio2audio_dma_start(struct snd_pcm_substream *substream) | |
461 | { | |
462 | struct snd_sgio2audio *chip = snd_pcm_substream_chip(substream); | |
463 | struct snd_sgio2audio_chan *chan = substream->runtime->private_data; | |
464 | int ch = chan->idx; | |
465 | ||
466 | /* reset DMA channel */ | |
467 | writeq(CHANNEL_CONTROL_RESET, &mace->perif.audio.chan[ch].control); | |
468 | udelay(10); | |
469 | writeq(0, &mace->perif.audio.chan[ch].control); | |
470 | ||
471 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
472 | /* push a full buffer */ | |
473 | snd_sgio2audio_dma_push_frag(chip, ch, CHANNEL_RING_SIZE - 32); | |
474 | } | |
475 | /* set DMA to wake on 50% empty and enable interrupt */ | |
476 | writeq(CHANNEL_DMA_ENABLE | CHANNEL_INT_THRESHOLD_50, | |
477 | &mace->perif.audio.chan[ch].control); | |
478 | return 0; | |
479 | } | |
480 | ||
481 | static int snd_sgio2audio_dma_stop(struct snd_pcm_substream *substream) | |
482 | { | |
483 | struct snd_sgio2audio_chan *chan = substream->runtime->private_data; | |
484 | ||
485 | writeq(0, &mace->perif.audio.chan[chan->idx].control); | |
486 | return 0; | |
487 | } | |
488 | ||
489 | static irqreturn_t snd_sgio2audio_dma_in_isr(int irq, void *dev_id) | |
490 | { | |
491 | struct snd_sgio2audio_chan *chan = dev_id; | |
492 | struct snd_pcm_substream *substream; | |
493 | struct snd_sgio2audio *chip; | |
494 | int count, ch; | |
495 | ||
496 | substream = chan->substream; | |
497 | chip = snd_pcm_substream_chip(substream); | |
498 | ch = chan->idx; | |
499 | ||
500 | /* empty the ring */ | |
501 | count = CHANNEL_RING_SIZE - | |
502 | readq(&mace->perif.audio.chan[ch].depth) - 32; | |
503 | if (snd_sgio2audio_dma_pull_frag(chip, ch, count)) | |
504 | snd_pcm_period_elapsed(substream); | |
505 | ||
506 | return IRQ_HANDLED; | |
507 | } | |
508 | ||
509 | static irqreturn_t snd_sgio2audio_dma_out_isr(int irq, void *dev_id) | |
510 | { | |
511 | struct snd_sgio2audio_chan *chan = dev_id; | |
512 | struct snd_pcm_substream *substream; | |
513 | struct snd_sgio2audio *chip; | |
514 | int count, ch; | |
515 | ||
516 | substream = chan->substream; | |
517 | chip = snd_pcm_substream_chip(substream); | |
518 | ch = chan->idx; | |
519 | /* fill the ring */ | |
520 | count = CHANNEL_RING_SIZE - | |
521 | readq(&mace->perif.audio.chan[ch].depth) - 32; | |
522 | if (snd_sgio2audio_dma_push_frag(chip, ch, count)) | |
523 | snd_pcm_period_elapsed(substream); | |
524 | ||
525 | return IRQ_HANDLED; | |
526 | } | |
527 | ||
528 | static irqreturn_t snd_sgio2audio_error_isr(int irq, void *dev_id) | |
529 | { | |
530 | struct snd_sgio2audio_chan *chan = dev_id; | |
531 | struct snd_pcm_substream *substream; | |
532 | ||
533 | substream = chan->substream; | |
534 | snd_sgio2audio_dma_stop(substream); | |
535 | snd_sgio2audio_dma_start(substream); | |
536 | return IRQ_HANDLED; | |
537 | } | |
538 | ||
539 | /* PCM part */ | |
540 | /* PCM hardware definition */ | |
541 | static struct snd_pcm_hardware snd_sgio2audio_pcm_hw = { | |
542 | .info = (SNDRV_PCM_INFO_MMAP | | |
543 | SNDRV_PCM_INFO_MMAP_VALID | | |
544 | SNDRV_PCM_INFO_INTERLEAVED | | |
545 | SNDRV_PCM_INFO_BLOCK_TRANSFER), | |
546 | .formats = SNDRV_PCM_FMTBIT_S16_BE, | |
547 | .rates = SNDRV_PCM_RATE_8000_48000, | |
548 | .rate_min = 8000, | |
549 | .rate_max = 48000, | |
550 | .channels_min = 2, | |
551 | .channels_max = 2, | |
552 | .buffer_bytes_max = 65536, | |
553 | .period_bytes_min = 32768, | |
554 | .period_bytes_max = 65536, | |
555 | .periods_min = 1, | |
556 | .periods_max = 1024, | |
557 | }; | |
558 | ||
559 | /* PCM playback open callback */ | |
560 | static int snd_sgio2audio_playback1_open(struct snd_pcm_substream *substream) | |
561 | { | |
562 | struct snd_sgio2audio *chip = snd_pcm_substream_chip(substream); | |
563 | struct snd_pcm_runtime *runtime = substream->runtime; | |
564 | ||
565 | runtime->hw = snd_sgio2audio_pcm_hw; | |
566 | runtime->private_data = &chip->channel[1]; | |
567 | return 0; | |
568 | } | |
569 | ||
570 | static int snd_sgio2audio_playback2_open(struct snd_pcm_substream *substream) | |
571 | { | |
572 | struct snd_sgio2audio *chip = snd_pcm_substream_chip(substream); | |
573 | struct snd_pcm_runtime *runtime = substream->runtime; | |
574 | ||
575 | runtime->hw = snd_sgio2audio_pcm_hw; | |
576 | runtime->private_data = &chip->channel[2]; | |
577 | return 0; | |
578 | } | |
579 | ||
580 | /* PCM capture open callback */ | |
581 | static int snd_sgio2audio_capture_open(struct snd_pcm_substream *substream) | |
582 | { | |
583 | struct snd_sgio2audio *chip = snd_pcm_substream_chip(substream); | |
584 | struct snd_pcm_runtime *runtime = substream->runtime; | |
585 | ||
586 | runtime->hw = snd_sgio2audio_pcm_hw; | |
587 | runtime->private_data = &chip->channel[0]; | |
588 | return 0; | |
589 | } | |
590 | ||
591 | /* PCM close callback */ | |
592 | static int snd_sgio2audio_pcm_close(struct snd_pcm_substream *substream) | |
593 | { | |
594 | struct snd_pcm_runtime *runtime = substream->runtime; | |
595 | ||
596 | runtime->private_data = NULL; | |
597 | return 0; | |
598 | } | |
599 | ||
600 | ||
601 | /* hw_params callback */ | |
602 | static int snd_sgio2audio_pcm_hw_params(struct snd_pcm_substream *substream, | |
603 | struct snd_pcm_hw_params *hw_params) | |
604 | { | |
6cedf869 CL |
605 | return snd_pcm_lib_alloc_vmalloc_buffer(substream, |
606 | params_buffer_bytes(hw_params)); | |
862c2c0a TB |
607 | } |
608 | ||
609 | /* hw_free callback */ | |
610 | static int snd_sgio2audio_pcm_hw_free(struct snd_pcm_substream *substream) | |
611 | { | |
6cedf869 | 612 | return snd_pcm_lib_free_vmalloc_buffer(substream); |
862c2c0a TB |
613 | } |
614 | ||
615 | /* prepare callback */ | |
616 | static int snd_sgio2audio_pcm_prepare(struct snd_pcm_substream *substream) | |
617 | { | |
618 | struct snd_sgio2audio *chip = snd_pcm_substream_chip(substream); | |
619 | struct snd_pcm_runtime *runtime = substream->runtime; | |
620 | struct snd_sgio2audio_chan *chan = substream->runtime->private_data; | |
621 | int ch = chan->idx; | |
622 | unsigned long flags; | |
623 | ||
624 | spin_lock_irqsave(&chip->channel[ch].lock, flags); | |
625 | ||
626 | /* Setup the pseudo-dma transfer pointers. */ | |
627 | chip->channel[ch].pos = 0; | |
628 | chip->channel[ch].size = 0; | |
629 | chip->channel[ch].substream = substream; | |
630 | ||
631 | /* set AD1843 format */ | |
632 | /* hardware format is always S16_LE */ | |
633 | switch (substream->stream) { | |
634 | case SNDRV_PCM_STREAM_PLAYBACK: | |
635 | ad1843_setup_dac(&chip->ad1843, | |
636 | ch - 1, | |
637 | runtime->rate, | |
638 | SNDRV_PCM_FORMAT_S16_LE, | |
639 | runtime->channels); | |
640 | break; | |
641 | case SNDRV_PCM_STREAM_CAPTURE: | |
642 | ad1843_setup_adc(&chip->ad1843, | |
643 | runtime->rate, | |
644 | SNDRV_PCM_FORMAT_S16_LE, | |
645 | runtime->channels); | |
646 | break; | |
647 | } | |
648 | spin_unlock_irqrestore(&chip->channel[ch].lock, flags); | |
649 | return 0; | |
650 | } | |
651 | ||
652 | /* trigger callback */ | |
653 | static int snd_sgio2audio_pcm_trigger(struct snd_pcm_substream *substream, | |
654 | int cmd) | |
655 | { | |
656 | switch (cmd) { | |
657 | case SNDRV_PCM_TRIGGER_START: | |
658 | /* start the PCM engine */ | |
659 | snd_sgio2audio_dma_start(substream); | |
660 | break; | |
661 | case SNDRV_PCM_TRIGGER_STOP: | |
662 | /* stop the PCM engine */ | |
663 | snd_sgio2audio_dma_stop(substream); | |
664 | break; | |
665 | default: | |
666 | return -EINVAL; | |
667 | } | |
668 | return 0; | |
669 | } | |
670 | ||
671 | /* pointer callback */ | |
672 | static snd_pcm_uframes_t | |
673 | snd_sgio2audio_pcm_pointer(struct snd_pcm_substream *substream) | |
674 | { | |
675 | struct snd_sgio2audio *chip = snd_pcm_substream_chip(substream); | |
676 | struct snd_sgio2audio_chan *chan = substream->runtime->private_data; | |
677 | ||
678 | /* get the current hardware pointer */ | |
679 | return bytes_to_frames(substream->runtime, | |
680 | chip->channel[chan->idx].pos); | |
681 | } | |
682 | ||
862c2c0a TB |
683 | /* operators */ |
684 | static struct snd_pcm_ops snd_sgio2audio_playback1_ops = { | |
685 | .open = snd_sgio2audio_playback1_open, | |
686 | .close = snd_sgio2audio_pcm_close, | |
687 | .ioctl = snd_pcm_lib_ioctl, | |
688 | .hw_params = snd_sgio2audio_pcm_hw_params, | |
689 | .hw_free = snd_sgio2audio_pcm_hw_free, | |
690 | .prepare = snd_sgio2audio_pcm_prepare, | |
691 | .trigger = snd_sgio2audio_pcm_trigger, | |
692 | .pointer = snd_sgio2audio_pcm_pointer, | |
6cedf869 | 693 | .page = snd_pcm_lib_get_vmalloc_page, |
862c2c0a TB |
694 | }; |
695 | ||
696 | static struct snd_pcm_ops snd_sgio2audio_playback2_ops = { | |
697 | .open = snd_sgio2audio_playback2_open, | |
698 | .close = snd_sgio2audio_pcm_close, | |
699 | .ioctl = snd_pcm_lib_ioctl, | |
700 | .hw_params = snd_sgio2audio_pcm_hw_params, | |
701 | .hw_free = snd_sgio2audio_pcm_hw_free, | |
702 | .prepare = snd_sgio2audio_pcm_prepare, | |
703 | .trigger = snd_sgio2audio_pcm_trigger, | |
704 | .pointer = snd_sgio2audio_pcm_pointer, | |
6cedf869 | 705 | .page = snd_pcm_lib_get_vmalloc_page, |
862c2c0a TB |
706 | }; |
707 | ||
708 | static struct snd_pcm_ops snd_sgio2audio_capture_ops = { | |
709 | .open = snd_sgio2audio_capture_open, | |
710 | .close = snd_sgio2audio_pcm_close, | |
711 | .ioctl = snd_pcm_lib_ioctl, | |
712 | .hw_params = snd_sgio2audio_pcm_hw_params, | |
713 | .hw_free = snd_sgio2audio_pcm_hw_free, | |
714 | .prepare = snd_sgio2audio_pcm_prepare, | |
715 | .trigger = snd_sgio2audio_pcm_trigger, | |
716 | .pointer = snd_sgio2audio_pcm_pointer, | |
6cedf869 | 717 | .page = snd_pcm_lib_get_vmalloc_page, |
862c2c0a TB |
718 | }; |
719 | ||
720 | /* | |
721 | * definitions of capture are omitted here... | |
722 | */ | |
723 | ||
724 | /* create a pcm device */ | |
725 | static int __devinit snd_sgio2audio_new_pcm(struct snd_sgio2audio *chip) | |
726 | { | |
727 | struct snd_pcm *pcm; | |
728 | int err; | |
729 | ||
730 | /* create first pcm device with one outputs and one input */ | |
731 | err = snd_pcm_new(chip->card, "SGI O2 Audio", 0, 1, 1, &pcm); | |
732 | if (err < 0) | |
733 | return err; | |
734 | ||
735 | pcm->private_data = chip; | |
736 | strcpy(pcm->name, "SGI O2 DAC1"); | |
737 | ||
738 | /* set operators */ | |
739 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, | |
740 | &snd_sgio2audio_playback1_ops); | |
741 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, | |
742 | &snd_sgio2audio_capture_ops); | |
743 | ||
744 | /* create second pcm device with one outputs and no input */ | |
745 | err = snd_pcm_new(chip->card, "SGI O2 Audio", 1, 1, 0, &pcm); | |
746 | if (err < 0) | |
747 | return err; | |
748 | ||
749 | pcm->private_data = chip; | |
750 | strcpy(pcm->name, "SGI O2 DAC2"); | |
751 | ||
752 | /* set operators */ | |
753 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, | |
754 | &snd_sgio2audio_playback2_ops); | |
755 | ||
756 | return 0; | |
757 | } | |
758 | ||
759 | static struct { | |
760 | int idx; | |
761 | int irq; | |
762 | irqreturn_t (*isr)(int, void *); | |
763 | const char *desc; | |
764 | } snd_sgio2_isr_table[] = { | |
765 | { | |
766 | .idx = 0, | |
767 | .irq = MACEISA_AUDIO1_DMAT_IRQ, | |
768 | .isr = snd_sgio2audio_dma_in_isr, | |
769 | .desc = "Capture DMA Channel 0" | |
770 | }, { | |
771 | .idx = 0, | |
772 | .irq = MACEISA_AUDIO1_OF_IRQ, | |
773 | .isr = snd_sgio2audio_error_isr, | |
774 | .desc = "Capture Overflow" | |
775 | }, { | |
776 | .idx = 1, | |
777 | .irq = MACEISA_AUDIO2_DMAT_IRQ, | |
778 | .isr = snd_sgio2audio_dma_out_isr, | |
779 | .desc = "Playback DMA Channel 1" | |
780 | }, { | |
781 | .idx = 1, | |
782 | .irq = MACEISA_AUDIO2_MERR_IRQ, | |
783 | .isr = snd_sgio2audio_error_isr, | |
784 | .desc = "Memory Error Channel 1" | |
785 | }, { | |
786 | .idx = 2, | |
787 | .irq = MACEISA_AUDIO3_DMAT_IRQ, | |
788 | .isr = snd_sgio2audio_dma_out_isr, | |
789 | .desc = "Playback DMA Channel 2" | |
790 | }, { | |
791 | .idx = 2, | |
792 | .irq = MACEISA_AUDIO3_MERR_IRQ, | |
793 | .isr = snd_sgio2audio_error_isr, | |
794 | .desc = "Memory Error Channel 2" | |
795 | } | |
796 | }; | |
797 | ||
798 | /* ALSA driver */ | |
799 | ||
800 | static int snd_sgio2audio_free(struct snd_sgio2audio *chip) | |
801 | { | |
802 | int i; | |
803 | ||
804 | /* reset interface */ | |
805 | writeq(AUDIO_CONTROL_RESET, &mace->perif.audio.control); | |
806 | udelay(1); | |
807 | writeq(0, &mace->perif.audio.control); | |
808 | ||
809 | /* release IRQ's */ | |
810 | for (i = 0; i < ARRAY_SIZE(snd_sgio2_isr_table); i++) | |
811 | free_irq(snd_sgio2_isr_table[i].irq, | |
812 | &chip->channel[snd_sgio2_isr_table[i].idx]); | |
813 | ||
814 | dma_free_coherent(NULL, MACEISA_RINGBUFFERS_SIZE, | |
815 | chip->ring_base, chip->ring_base_dma); | |
816 | ||
817 | /* release card data */ | |
818 | kfree(chip); | |
819 | return 0; | |
820 | } | |
821 | ||
822 | static int snd_sgio2audio_dev_free(struct snd_device *device) | |
823 | { | |
824 | struct snd_sgio2audio *chip = device->device_data; | |
825 | ||
826 | return snd_sgio2audio_free(chip); | |
827 | } | |
828 | ||
829 | static struct snd_device_ops ops = { | |
830 | .dev_free = snd_sgio2audio_dev_free, | |
831 | }; | |
832 | ||
833 | static int __devinit snd_sgio2audio_create(struct snd_card *card, | |
834 | struct snd_sgio2audio **rchip) | |
835 | { | |
836 | struct snd_sgio2audio *chip; | |
837 | int i, err; | |
838 | ||
839 | *rchip = NULL; | |
840 | ||
841 | /* check if a codec is attached to the interface */ | |
842 | /* (Audio or Audio/Video board present) */ | |
843 | if (!(readq(&mace->perif.audio.control) & AUDIO_CONTROL_CODEC_PRESENT)) | |
844 | return -ENOENT; | |
845 | ||
846 | chip = kzalloc(sizeof(struct snd_sgio2audio), GFP_KERNEL); | |
847 | if (chip == NULL) | |
848 | return -ENOMEM; | |
849 | ||
850 | chip->card = card; | |
851 | ||
852 | chip->ring_base = dma_alloc_coherent(NULL, MACEISA_RINGBUFFERS_SIZE, | |
853 | &chip->ring_base_dma, GFP_USER); | |
854 | if (chip->ring_base == NULL) { | |
855 | printk(KERN_ERR | |
856 | "sgio2audio: could not allocate ring buffers\n"); | |
857 | kfree(chip); | |
858 | return -ENOMEM; | |
859 | } | |
860 | ||
861 | spin_lock_init(&chip->ad1843_lock); | |
862 | ||
863 | /* initialize channels */ | |
864 | for (i = 0; i < 3; i++) { | |
865 | spin_lock_init(&chip->channel[i].lock); | |
866 | chip->channel[i].idx = i; | |
867 | } | |
868 | ||
869 | /* allocate IRQs */ | |
870 | for (i = 0; i < ARRAY_SIZE(snd_sgio2_isr_table); i++) { | |
871 | if (request_irq(snd_sgio2_isr_table[i].irq, | |
872 | snd_sgio2_isr_table[i].isr, | |
873 | 0, | |
874 | snd_sgio2_isr_table[i].desc, | |
875 | &chip->channel[snd_sgio2_isr_table[i].idx])) { | |
876 | snd_sgio2audio_free(chip); | |
877 | printk(KERN_ERR "sgio2audio: cannot allocate irq %d\n", | |
878 | snd_sgio2_isr_table[i].irq); | |
879 | return -EBUSY; | |
880 | } | |
881 | } | |
882 | ||
883 | /* reset the interface */ | |
884 | writeq(AUDIO_CONTROL_RESET, &mace->perif.audio.control); | |
885 | udelay(1); | |
886 | writeq(0, &mace->perif.audio.control); | |
887 | msleep_interruptible(1); /* give time to recover */ | |
888 | ||
889 | /* set ring base */ | |
890 | writeq(chip->ring_base_dma, &mace->perif.ctrl.ringbase); | |
891 | ||
892 | /* attach the AD1843 codec */ | |
893 | chip->ad1843.read = read_ad1843_reg; | |
894 | chip->ad1843.write = write_ad1843_reg; | |
895 | chip->ad1843.chip = chip; | |
896 | ||
897 | /* initialize the AD1843 codec */ | |
898 | err = ad1843_init(&chip->ad1843); | |
899 | if (err < 0) { | |
900 | snd_sgio2audio_free(chip); | |
901 | return err; | |
902 | } | |
903 | ||
904 | err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops); | |
905 | if (err < 0) { | |
906 | snd_sgio2audio_free(chip); | |
907 | return err; | |
908 | } | |
909 | *rchip = chip; | |
910 | return 0; | |
911 | } | |
912 | ||
913 | static int __devinit snd_sgio2audio_probe(struct platform_device *pdev) | |
914 | { | |
915 | struct snd_card *card; | |
916 | struct snd_sgio2audio *chip; | |
917 | int err; | |
918 | ||
bd7dd77c TI |
919 | err = snd_card_create(index, id, THIS_MODULE, 0, &card); |
920 | if (err < 0) | |
921 | return err; | |
862c2c0a TB |
922 | |
923 | err = snd_sgio2audio_create(card, &chip); | |
924 | if (err < 0) { | |
925 | snd_card_free(card); | |
926 | return err; | |
927 | } | |
928 | snd_card_set_dev(card, &pdev->dev); | |
929 | ||
930 | err = snd_sgio2audio_new_pcm(chip); | |
931 | if (err < 0) { | |
932 | snd_card_free(card); | |
933 | return err; | |
934 | } | |
935 | err = snd_sgio2audio_new_mixer(chip); | |
936 | if (err < 0) { | |
937 | snd_card_free(card); | |
938 | return err; | |
939 | } | |
940 | ||
941 | strcpy(card->driver, "SGI O2 Audio"); | |
942 | strcpy(card->shortname, "SGI O2 Audio"); | |
943 | sprintf(card->longname, "%s irq %i-%i", | |
944 | card->shortname, | |
945 | MACEISA_AUDIO1_DMAT_IRQ, | |
946 | MACEISA_AUDIO3_MERR_IRQ); | |
947 | ||
948 | err = snd_card_register(card); | |
949 | if (err < 0) { | |
950 | snd_card_free(card); | |
951 | return err; | |
952 | } | |
953 | platform_set_drvdata(pdev, card); | |
954 | return 0; | |
955 | } | |
956 | ||
2f229a31 | 957 | static int __devexit snd_sgio2audio_remove(struct platform_device *pdev) |
862c2c0a TB |
958 | { |
959 | struct snd_card *card = platform_get_drvdata(pdev); | |
960 | ||
961 | snd_card_free(card); | |
962 | platform_set_drvdata(pdev, NULL); | |
963 | return 0; | |
964 | } | |
965 | ||
966 | static struct platform_driver sgio2audio_driver = { | |
967 | .probe = snd_sgio2audio_probe, | |
968 | .remove = __devexit_p(snd_sgio2audio_remove), | |
969 | .driver = { | |
970 | .name = "sgio2audio", | |
971 | .owner = THIS_MODULE, | |
972 | } | |
973 | }; | |
974 | ||
975 | static int __init alsa_card_sgio2audio_init(void) | |
976 | { | |
977 | return platform_driver_register(&sgio2audio_driver); | |
978 | } | |
979 | ||
980 | static void __exit alsa_card_sgio2audio_exit(void) | |
981 | { | |
982 | platform_driver_unregister(&sgio2audio_driver); | |
983 | } | |
984 | ||
985 | module_init(alsa_card_sgio2audio_init) | |
986 | module_exit(alsa_card_sgio2audio_exit) |