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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> | |
862c2c0a TB |
28 | #include <linux/interrupt.h> |
29 | #include <linux/dma-mapping.h> | |
30 | #include <linux/platform_device.h> | |
31 | #include <linux/io.h> | |
5a0e3ad6 | 32 | #include <linux/slab.h> |
da155d5b | 33 | #include <linux/module.h> |
862c2c0a TB |
34 | |
35 | #include <asm/ip32/ip32_ints.h> | |
36 | #include <asm/ip32/mace.h> | |
37 | ||
38 | #include <sound/core.h> | |
39 | #include <sound/control.h> | |
40 | #include <sound/pcm.h> | |
41 | #define SNDRV_GET_ID | |
42 | #include <sound/initval.h> | |
43 | #include <sound/ad1843.h> | |
44 | ||
45 | ||
46 | MODULE_AUTHOR("Vivien Chappelier <vivien.chappelier@linux-mips.org>"); | |
47 | MODULE_DESCRIPTION("SGI O2 Audio"); | |
48 | MODULE_LICENSE("GPL"); | |
49 | MODULE_SUPPORTED_DEVICE("{{Silicon Graphics, O2 Audio}}"); | |
50 | ||
51 | static int index = SNDRV_DEFAULT_IDX1; /* Index 0-MAX */ | |
52 | static char *id = SNDRV_DEFAULT_STR1; /* ID for this card */ | |
53 | ||
54 | module_param(index, int, 0444); | |
55 | MODULE_PARM_DESC(index, "Index value for SGI O2 soundcard."); | |
56 | module_param(id, charp, 0444); | |
57 | MODULE_PARM_DESC(id, "ID string for SGI O2 soundcard."); | |
58 | ||
59 | ||
60 | #define AUDIO_CONTROL_RESET BIT(0) /* 1: reset audio interface */ | |
61 | #define AUDIO_CONTROL_CODEC_PRESENT BIT(1) /* 1: codec detected */ | |
62 | ||
63 | #define CODEC_CONTROL_WORD_SHIFT 0 | |
64 | #define CODEC_CONTROL_READ BIT(16) | |
65 | #define CODEC_CONTROL_ADDRESS_SHIFT 17 | |
66 | ||
67 | #define CHANNEL_CONTROL_RESET BIT(10) /* 1: reset channel */ | |
68 | #define CHANNEL_DMA_ENABLE BIT(9) /* 1: enable DMA transfer */ | |
69 | #define CHANNEL_INT_THRESHOLD_DISABLED (0 << 5) /* interrupt disabled */ | |
70 | #define CHANNEL_INT_THRESHOLD_25 (1 << 5) /* int on buffer >25% full */ | |
71 | #define CHANNEL_INT_THRESHOLD_50 (2 << 5) /* int on buffer >50% full */ | |
72 | #define CHANNEL_INT_THRESHOLD_75 (3 << 5) /* int on buffer >75% full */ | |
73 | #define CHANNEL_INT_THRESHOLD_EMPTY (4 << 5) /* int on buffer empty */ | |
74 | #define CHANNEL_INT_THRESHOLD_NOT_EMPTY (5 << 5) /* int on buffer !empty */ | |
75 | #define CHANNEL_INT_THRESHOLD_FULL (6 << 5) /* int on buffer empty */ | |
76 | #define CHANNEL_INT_THRESHOLD_NOT_FULL (7 << 5) /* int on buffer !empty */ | |
77 | ||
78 | #define CHANNEL_RING_SHIFT 12 | |
79 | #define CHANNEL_RING_SIZE (1 << CHANNEL_RING_SHIFT) | |
80 | #define CHANNEL_RING_MASK (CHANNEL_RING_SIZE - 1) | |
81 | ||
82 | #define CHANNEL_LEFT_SHIFT 40 | |
83 | #define CHANNEL_RIGHT_SHIFT 8 | |
84 | ||
85 | struct snd_sgio2audio_chan { | |
86 | int idx; | |
87 | struct snd_pcm_substream *substream; | |
88 | int pos; | |
89 | snd_pcm_uframes_t size; | |
90 | spinlock_t lock; | |
91 | }; | |
92 | ||
93 | /* definition of the chip-specific record */ | |
94 | struct snd_sgio2audio { | |
95 | struct snd_card *card; | |
96 | ||
97 | /* codec */ | |
98 | struct snd_ad1843 ad1843; | |
99 | spinlock_t ad1843_lock; | |
100 | ||
101 | /* channels */ | |
102 | struct snd_sgio2audio_chan channel[3]; | |
103 | ||
104 | /* resources */ | |
105 | void *ring_base; | |
106 | dma_addr_t ring_base_dma; | |
107 | }; | |
108 | ||
109 | /* AD1843 access */ | |
110 | ||
111 | /* | |
112 | * read_ad1843_reg returns the current contents of a 16 bit AD1843 register. | |
113 | * | |
114 | * Returns unsigned register value on success, -errno on failure. | |
115 | */ | |
116 | static int read_ad1843_reg(void *priv, int reg) | |
117 | { | |
118 | struct snd_sgio2audio *chip = priv; | |
119 | int val; | |
120 | unsigned long flags; | |
121 | ||
122 | spin_lock_irqsave(&chip->ad1843_lock, flags); | |
123 | ||
124 | writeq((reg << CODEC_CONTROL_ADDRESS_SHIFT) | | |
125 | CODEC_CONTROL_READ, &mace->perif.audio.codec_control); | |
126 | wmb(); | |
127 | val = readq(&mace->perif.audio.codec_control); /* flush bus */ | |
128 | udelay(200); | |
129 | ||
130 | val = readq(&mace->perif.audio.codec_read); | |
131 | ||
132 | spin_unlock_irqrestore(&chip->ad1843_lock, flags); | |
133 | return val; | |
134 | } | |
135 | ||
136 | /* | |
137 | * write_ad1843_reg writes the specified value to a 16 bit AD1843 register. | |
138 | */ | |
139 | static int write_ad1843_reg(void *priv, int reg, int word) | |
140 | { | |
141 | struct snd_sgio2audio *chip = priv; | |
142 | int val; | |
143 | unsigned long flags; | |
144 | ||
145 | spin_lock_irqsave(&chip->ad1843_lock, flags); | |
146 | ||
147 | writeq((reg << CODEC_CONTROL_ADDRESS_SHIFT) | | |
148 | (word << CODEC_CONTROL_WORD_SHIFT), | |
149 | &mace->perif.audio.codec_control); | |
150 | wmb(); | |
151 | val = readq(&mace->perif.audio.codec_control); /* flush bus */ | |
152 | udelay(200); | |
153 | ||
154 | spin_unlock_irqrestore(&chip->ad1843_lock, flags); | |
155 | return 0; | |
156 | } | |
157 | ||
158 | static int sgio2audio_gain_info(struct snd_kcontrol *kcontrol, | |
159 | struct snd_ctl_elem_info *uinfo) | |
160 | { | |
161 | struct snd_sgio2audio *chip = snd_kcontrol_chip(kcontrol); | |
162 | ||
163 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; | |
164 | uinfo->count = 2; | |
165 | uinfo->value.integer.min = 0; | |
166 | uinfo->value.integer.max = ad1843_get_gain_max(&chip->ad1843, | |
167 | (int)kcontrol->private_value); | |
168 | return 0; | |
169 | } | |
170 | ||
171 | static int sgio2audio_gain_get(struct snd_kcontrol *kcontrol, | |
172 | struct snd_ctl_elem_value *ucontrol) | |
173 | { | |
174 | struct snd_sgio2audio *chip = snd_kcontrol_chip(kcontrol); | |
175 | int vol; | |
176 | ||
177 | vol = ad1843_get_gain(&chip->ad1843, (int)kcontrol->private_value); | |
178 | ||
179 | ucontrol->value.integer.value[0] = (vol >> 8) & 0xFF; | |
180 | ucontrol->value.integer.value[1] = vol & 0xFF; | |
181 | ||
182 | return 0; | |
183 | } | |
184 | ||
185 | static int sgio2audio_gain_put(struct snd_kcontrol *kcontrol, | |
186 | struct snd_ctl_elem_value *ucontrol) | |
187 | { | |
188 | struct snd_sgio2audio *chip = snd_kcontrol_chip(kcontrol); | |
189 | int newvol, oldvol; | |
190 | ||
191 | oldvol = ad1843_get_gain(&chip->ad1843, kcontrol->private_value); | |
192 | newvol = (ucontrol->value.integer.value[0] << 8) | | |
193 | ucontrol->value.integer.value[1]; | |
194 | ||
195 | newvol = ad1843_set_gain(&chip->ad1843, kcontrol->private_value, | |
196 | newvol); | |
197 | ||
198 | return newvol != oldvol; | |
199 | } | |
200 | ||
201 | static int sgio2audio_source_info(struct snd_kcontrol *kcontrol, | |
202 | struct snd_ctl_elem_info *uinfo) | |
203 | { | |
204 | static const char *texts[3] = { | |
205 | "Cam Mic", "Mic", "Line" | |
206 | }; | |
207 | uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED; | |
208 | uinfo->count = 1; | |
209 | uinfo->value.enumerated.items = 3; | |
210 | if (uinfo->value.enumerated.item >= 3) | |
211 | uinfo->value.enumerated.item = 1; | |
212 | strcpy(uinfo->value.enumerated.name, | |
213 | texts[uinfo->value.enumerated.item]); | |
214 | return 0; | |
215 | } | |
216 | ||
217 | static int sgio2audio_source_get(struct snd_kcontrol *kcontrol, | |
218 | struct snd_ctl_elem_value *ucontrol) | |
219 | { | |
220 | struct snd_sgio2audio *chip = snd_kcontrol_chip(kcontrol); | |
221 | ||
222 | ucontrol->value.enumerated.item[0] = ad1843_get_recsrc(&chip->ad1843); | |
223 | return 0; | |
224 | } | |
225 | ||
226 | static int sgio2audio_source_put(struct snd_kcontrol *kcontrol, | |
227 | struct snd_ctl_elem_value *ucontrol) | |
228 | { | |
229 | struct snd_sgio2audio *chip = snd_kcontrol_chip(kcontrol); | |
230 | int newsrc, oldsrc; | |
231 | ||
232 | oldsrc = ad1843_get_recsrc(&chip->ad1843); | |
233 | newsrc = ad1843_set_recsrc(&chip->ad1843, | |
234 | ucontrol->value.enumerated.item[0]); | |
235 | ||
236 | return newsrc != oldsrc; | |
237 | } | |
238 | ||
239 | /* dac1/pcm0 mixer control */ | |
240 | static struct snd_kcontrol_new sgio2audio_ctrl_pcm0 __devinitdata = { | |
241 | .iface = SNDRV_CTL_ELEM_IFACE_MIXER, | |
242 | .name = "PCM Playback Volume", | |
243 | .index = 0, | |
244 | .access = SNDRV_CTL_ELEM_ACCESS_READWRITE, | |
245 | .private_value = AD1843_GAIN_PCM_0, | |
246 | .info = sgio2audio_gain_info, | |
247 | .get = sgio2audio_gain_get, | |
248 | .put = sgio2audio_gain_put, | |
249 | }; | |
250 | ||
251 | /* dac2/pcm1 mixer control */ | |
252 | static struct snd_kcontrol_new sgio2audio_ctrl_pcm1 __devinitdata = { | |
253 | .iface = SNDRV_CTL_ELEM_IFACE_MIXER, | |
254 | .name = "PCM Playback Volume", | |
255 | .index = 1, | |
256 | .access = SNDRV_CTL_ELEM_ACCESS_READWRITE, | |
257 | .private_value = AD1843_GAIN_PCM_1, | |
258 | .info = sgio2audio_gain_info, | |
259 | .get = sgio2audio_gain_get, | |
260 | .put = sgio2audio_gain_put, | |
261 | }; | |
262 | ||
263 | /* record level mixer control */ | |
264 | static struct snd_kcontrol_new sgio2audio_ctrl_reclevel __devinitdata = { | |
265 | .iface = SNDRV_CTL_ELEM_IFACE_MIXER, | |
266 | .name = "Capture Volume", | |
267 | .access = SNDRV_CTL_ELEM_ACCESS_READWRITE, | |
268 | .private_value = AD1843_GAIN_RECLEV, | |
269 | .info = sgio2audio_gain_info, | |
270 | .get = sgio2audio_gain_get, | |
271 | .put = sgio2audio_gain_put, | |
272 | }; | |
273 | ||
274 | /* record level source control */ | |
275 | static struct snd_kcontrol_new sgio2audio_ctrl_recsource __devinitdata = { | |
276 | .iface = SNDRV_CTL_ELEM_IFACE_MIXER, | |
277 | .name = "Capture Source", | |
278 | .access = SNDRV_CTL_ELEM_ACCESS_READWRITE, | |
279 | .info = sgio2audio_source_info, | |
280 | .get = sgio2audio_source_get, | |
281 | .put = sgio2audio_source_put, | |
282 | }; | |
283 | ||
284 | /* line mixer control */ | |
285 | static struct snd_kcontrol_new sgio2audio_ctrl_line __devinitdata = { | |
286 | .iface = SNDRV_CTL_ELEM_IFACE_MIXER, | |
287 | .name = "Line Playback Volume", | |
288 | .index = 0, | |
289 | .access = SNDRV_CTL_ELEM_ACCESS_READWRITE, | |
290 | .private_value = AD1843_GAIN_LINE, | |
291 | .info = sgio2audio_gain_info, | |
292 | .get = sgio2audio_gain_get, | |
293 | .put = sgio2audio_gain_put, | |
294 | }; | |
295 | ||
296 | /* cd mixer control */ | |
297 | static struct snd_kcontrol_new sgio2audio_ctrl_cd __devinitdata = { | |
298 | .iface = SNDRV_CTL_ELEM_IFACE_MIXER, | |
299 | .name = "Line Playback Volume", | |
300 | .index = 1, | |
301 | .access = SNDRV_CTL_ELEM_ACCESS_READWRITE, | |
302 | .private_value = AD1843_GAIN_LINE_2, | |
303 | .info = sgio2audio_gain_info, | |
304 | .get = sgio2audio_gain_get, | |
305 | .put = sgio2audio_gain_put, | |
306 | }; | |
307 | ||
308 | /* mic mixer control */ | |
309 | static struct snd_kcontrol_new sgio2audio_ctrl_mic __devinitdata = { | |
310 | .iface = SNDRV_CTL_ELEM_IFACE_MIXER, | |
311 | .name = "Mic Playback Volume", | |
312 | .access = SNDRV_CTL_ELEM_ACCESS_READWRITE, | |
313 | .private_value = AD1843_GAIN_MIC, | |
314 | .info = sgio2audio_gain_info, | |
315 | .get = sgio2audio_gain_get, | |
316 | .put = sgio2audio_gain_put, | |
317 | }; | |
318 | ||
319 | ||
320 | static int __devinit snd_sgio2audio_new_mixer(struct snd_sgio2audio *chip) | |
321 | { | |
322 | int err; | |
323 | ||
324 | err = snd_ctl_add(chip->card, | |
325 | snd_ctl_new1(&sgio2audio_ctrl_pcm0, chip)); | |
326 | if (err < 0) | |
327 | return err; | |
328 | ||
329 | err = snd_ctl_add(chip->card, | |
330 | snd_ctl_new1(&sgio2audio_ctrl_pcm1, chip)); | |
331 | if (err < 0) | |
332 | return err; | |
333 | ||
334 | err = snd_ctl_add(chip->card, | |
335 | snd_ctl_new1(&sgio2audio_ctrl_reclevel, chip)); | |
336 | if (err < 0) | |
337 | return err; | |
338 | ||
339 | err = snd_ctl_add(chip->card, | |
340 | snd_ctl_new1(&sgio2audio_ctrl_recsource, chip)); | |
341 | if (err < 0) | |
342 | return err; | |
343 | err = snd_ctl_add(chip->card, | |
344 | snd_ctl_new1(&sgio2audio_ctrl_line, chip)); | |
345 | if (err < 0) | |
346 | return err; | |
347 | ||
348 | err = snd_ctl_add(chip->card, | |
349 | snd_ctl_new1(&sgio2audio_ctrl_cd, chip)); | |
350 | if (err < 0) | |
351 | return err; | |
352 | ||
353 | err = snd_ctl_add(chip->card, | |
354 | snd_ctl_new1(&sgio2audio_ctrl_mic, chip)); | |
355 | if (err < 0) | |
356 | return err; | |
357 | ||
358 | return 0; | |
359 | } | |
360 | ||
361 | /* low-level audio interface DMA */ | |
362 | ||
363 | /* get data out of bounce buffer, count must be a multiple of 32 */ | |
364 | /* returns 1 if a period has elapsed */ | |
365 | static int snd_sgio2audio_dma_pull_frag(struct snd_sgio2audio *chip, | |
366 | unsigned int ch, unsigned int count) | |
367 | { | |
368 | int ret; | |
369 | unsigned long src_base, src_pos, dst_mask; | |
370 | unsigned char *dst_base; | |
371 | int dst_pos; | |
372 | u64 *src; | |
373 | s16 *dst; | |
374 | u64 x; | |
375 | unsigned long flags; | |
376 | struct snd_pcm_runtime *runtime = chip->channel[ch].substream->runtime; | |
377 | ||
378 | spin_lock_irqsave(&chip->channel[ch].lock, flags); | |
379 | ||
380 | src_base = (unsigned long) chip->ring_base | (ch << CHANNEL_RING_SHIFT); | |
381 | src_pos = readq(&mace->perif.audio.chan[ch].read_ptr); | |
382 | dst_base = runtime->dma_area; | |
383 | dst_pos = chip->channel[ch].pos; | |
384 | dst_mask = frames_to_bytes(runtime, runtime->buffer_size) - 1; | |
385 | ||
386 | /* check if a period has elapsed */ | |
387 | chip->channel[ch].size += (count >> 3); /* in frames */ | |
388 | ret = chip->channel[ch].size >= runtime->period_size; | |
389 | chip->channel[ch].size %= runtime->period_size; | |
390 | ||
391 | while (count) { | |
392 | src = (u64 *)(src_base + src_pos); | |
393 | dst = (s16 *)(dst_base + dst_pos); | |
394 | ||
395 | x = *src; | |
396 | dst[0] = (x >> CHANNEL_LEFT_SHIFT) & 0xffff; | |
397 | dst[1] = (x >> CHANNEL_RIGHT_SHIFT) & 0xffff; | |
398 | ||
399 | src_pos = (src_pos + sizeof(u64)) & CHANNEL_RING_MASK; | |
400 | dst_pos = (dst_pos + 2 * sizeof(s16)) & dst_mask; | |
401 | count -= sizeof(u64); | |
402 | } | |
403 | ||
404 | writeq(src_pos, &mace->perif.audio.chan[ch].read_ptr); /* in bytes */ | |
405 | chip->channel[ch].pos = dst_pos; | |
406 | ||
407 | spin_unlock_irqrestore(&chip->channel[ch].lock, flags); | |
408 | return ret; | |
409 | } | |
410 | ||
411 | /* put some DMA data in bounce buffer, count must be a multiple of 32 */ | |
412 | /* returns 1 if a period has elapsed */ | |
413 | static int snd_sgio2audio_dma_push_frag(struct snd_sgio2audio *chip, | |
414 | unsigned int ch, unsigned int count) | |
415 | { | |
416 | int ret; | |
417 | s64 l, r; | |
418 | unsigned long dst_base, dst_pos, src_mask; | |
419 | unsigned char *src_base; | |
420 | int src_pos; | |
421 | u64 *dst; | |
422 | s16 *src; | |
423 | unsigned long flags; | |
424 | struct snd_pcm_runtime *runtime = chip->channel[ch].substream->runtime; | |
425 | ||
426 | spin_lock_irqsave(&chip->channel[ch].lock, flags); | |
427 | ||
428 | dst_base = (unsigned long)chip->ring_base | (ch << CHANNEL_RING_SHIFT); | |
429 | dst_pos = readq(&mace->perif.audio.chan[ch].write_ptr); | |
430 | src_base = runtime->dma_area; | |
431 | src_pos = chip->channel[ch].pos; | |
432 | src_mask = frames_to_bytes(runtime, runtime->buffer_size) - 1; | |
433 | ||
434 | /* check if a period has elapsed */ | |
435 | chip->channel[ch].size += (count >> 3); /* in frames */ | |
436 | ret = chip->channel[ch].size >= runtime->period_size; | |
437 | chip->channel[ch].size %= runtime->period_size; | |
438 | ||
439 | while (count) { | |
440 | src = (s16 *)(src_base + src_pos); | |
441 | dst = (u64 *)(dst_base + dst_pos); | |
442 | ||
443 | l = src[0]; /* sign extend */ | |
444 | r = src[1]; /* sign extend */ | |
445 | ||
446 | *dst = ((l & 0x00ffffff) << CHANNEL_LEFT_SHIFT) | | |
447 | ((r & 0x00ffffff) << CHANNEL_RIGHT_SHIFT); | |
448 | ||
449 | dst_pos = (dst_pos + sizeof(u64)) & CHANNEL_RING_MASK; | |
450 | src_pos = (src_pos + 2 * sizeof(s16)) & src_mask; | |
451 | count -= sizeof(u64); | |
452 | } | |
453 | ||
454 | writeq(dst_pos, &mace->perif.audio.chan[ch].write_ptr); /* in bytes */ | |
455 | chip->channel[ch].pos = src_pos; | |
456 | ||
457 | spin_unlock_irqrestore(&chip->channel[ch].lock, flags); | |
458 | return ret; | |
459 | } | |
460 | ||
461 | static int snd_sgio2audio_dma_start(struct snd_pcm_substream *substream) | |
462 | { | |
463 | struct snd_sgio2audio *chip = snd_pcm_substream_chip(substream); | |
464 | struct snd_sgio2audio_chan *chan = substream->runtime->private_data; | |
465 | int ch = chan->idx; | |
466 | ||
467 | /* reset DMA channel */ | |
468 | writeq(CHANNEL_CONTROL_RESET, &mace->perif.audio.chan[ch].control); | |
469 | udelay(10); | |
470 | writeq(0, &mace->perif.audio.chan[ch].control); | |
471 | ||
472 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
473 | /* push a full buffer */ | |
474 | snd_sgio2audio_dma_push_frag(chip, ch, CHANNEL_RING_SIZE - 32); | |
475 | } | |
476 | /* set DMA to wake on 50% empty and enable interrupt */ | |
477 | writeq(CHANNEL_DMA_ENABLE | CHANNEL_INT_THRESHOLD_50, | |
478 | &mace->perif.audio.chan[ch].control); | |
479 | return 0; | |
480 | } | |
481 | ||
482 | static int snd_sgio2audio_dma_stop(struct snd_pcm_substream *substream) | |
483 | { | |
484 | struct snd_sgio2audio_chan *chan = substream->runtime->private_data; | |
485 | ||
486 | writeq(0, &mace->perif.audio.chan[chan->idx].control); | |
487 | return 0; | |
488 | } | |
489 | ||
490 | static irqreturn_t snd_sgio2audio_dma_in_isr(int irq, void *dev_id) | |
491 | { | |
492 | struct snd_sgio2audio_chan *chan = dev_id; | |
493 | struct snd_pcm_substream *substream; | |
494 | struct snd_sgio2audio *chip; | |
495 | int count, ch; | |
496 | ||
497 | substream = chan->substream; | |
498 | chip = snd_pcm_substream_chip(substream); | |
499 | ch = chan->idx; | |
500 | ||
501 | /* empty the ring */ | |
502 | count = CHANNEL_RING_SIZE - | |
503 | readq(&mace->perif.audio.chan[ch].depth) - 32; | |
504 | if (snd_sgio2audio_dma_pull_frag(chip, ch, count)) | |
505 | snd_pcm_period_elapsed(substream); | |
506 | ||
507 | return IRQ_HANDLED; | |
508 | } | |
509 | ||
510 | static irqreturn_t snd_sgio2audio_dma_out_isr(int irq, void *dev_id) | |
511 | { | |
512 | struct snd_sgio2audio_chan *chan = dev_id; | |
513 | struct snd_pcm_substream *substream; | |
514 | struct snd_sgio2audio *chip; | |
515 | int count, ch; | |
516 | ||
517 | substream = chan->substream; | |
518 | chip = snd_pcm_substream_chip(substream); | |
519 | ch = chan->idx; | |
520 | /* fill the ring */ | |
521 | count = CHANNEL_RING_SIZE - | |
522 | readq(&mace->perif.audio.chan[ch].depth) - 32; | |
523 | if (snd_sgio2audio_dma_push_frag(chip, ch, count)) | |
524 | snd_pcm_period_elapsed(substream); | |
525 | ||
526 | return IRQ_HANDLED; | |
527 | } | |
528 | ||
529 | static irqreturn_t snd_sgio2audio_error_isr(int irq, void *dev_id) | |
530 | { | |
531 | struct snd_sgio2audio_chan *chan = dev_id; | |
532 | struct snd_pcm_substream *substream; | |
533 | ||
534 | substream = chan->substream; | |
535 | snd_sgio2audio_dma_stop(substream); | |
536 | snd_sgio2audio_dma_start(substream); | |
537 | return IRQ_HANDLED; | |
538 | } | |
539 | ||
540 | /* PCM part */ | |
541 | /* PCM hardware definition */ | |
542 | static struct snd_pcm_hardware snd_sgio2audio_pcm_hw = { | |
543 | .info = (SNDRV_PCM_INFO_MMAP | | |
544 | SNDRV_PCM_INFO_MMAP_VALID | | |
545 | SNDRV_PCM_INFO_INTERLEAVED | | |
546 | SNDRV_PCM_INFO_BLOCK_TRANSFER), | |
547 | .formats = SNDRV_PCM_FMTBIT_S16_BE, | |
548 | .rates = SNDRV_PCM_RATE_8000_48000, | |
549 | .rate_min = 8000, | |
550 | .rate_max = 48000, | |
551 | .channels_min = 2, | |
552 | .channels_max = 2, | |
553 | .buffer_bytes_max = 65536, | |
554 | .period_bytes_min = 32768, | |
555 | .period_bytes_max = 65536, | |
556 | .periods_min = 1, | |
557 | .periods_max = 1024, | |
558 | }; | |
559 | ||
560 | /* PCM playback open callback */ | |
561 | static int snd_sgio2audio_playback1_open(struct snd_pcm_substream *substream) | |
562 | { | |
563 | struct snd_sgio2audio *chip = snd_pcm_substream_chip(substream); | |
564 | struct snd_pcm_runtime *runtime = substream->runtime; | |
565 | ||
566 | runtime->hw = snd_sgio2audio_pcm_hw; | |
567 | runtime->private_data = &chip->channel[1]; | |
568 | return 0; | |
569 | } | |
570 | ||
571 | static int snd_sgio2audio_playback2_open(struct snd_pcm_substream *substream) | |
572 | { | |
573 | struct snd_sgio2audio *chip = snd_pcm_substream_chip(substream); | |
574 | struct snd_pcm_runtime *runtime = substream->runtime; | |
575 | ||
576 | runtime->hw = snd_sgio2audio_pcm_hw; | |
577 | runtime->private_data = &chip->channel[2]; | |
578 | return 0; | |
579 | } | |
580 | ||
581 | /* PCM capture open callback */ | |
582 | static int snd_sgio2audio_capture_open(struct snd_pcm_substream *substream) | |
583 | { | |
584 | struct snd_sgio2audio *chip = snd_pcm_substream_chip(substream); | |
585 | struct snd_pcm_runtime *runtime = substream->runtime; | |
586 | ||
587 | runtime->hw = snd_sgio2audio_pcm_hw; | |
588 | runtime->private_data = &chip->channel[0]; | |
589 | return 0; | |
590 | } | |
591 | ||
592 | /* PCM close callback */ | |
593 | static int snd_sgio2audio_pcm_close(struct snd_pcm_substream *substream) | |
594 | { | |
595 | struct snd_pcm_runtime *runtime = substream->runtime; | |
596 | ||
597 | runtime->private_data = NULL; | |
598 | return 0; | |
599 | } | |
600 | ||
601 | ||
602 | /* hw_params callback */ | |
603 | static int snd_sgio2audio_pcm_hw_params(struct snd_pcm_substream *substream, | |
604 | struct snd_pcm_hw_params *hw_params) | |
605 | { | |
6cedf869 CL |
606 | return snd_pcm_lib_alloc_vmalloc_buffer(substream, |
607 | params_buffer_bytes(hw_params)); | |
862c2c0a TB |
608 | } |
609 | ||
610 | /* hw_free callback */ | |
611 | static int snd_sgio2audio_pcm_hw_free(struct snd_pcm_substream *substream) | |
612 | { | |
6cedf869 | 613 | return snd_pcm_lib_free_vmalloc_buffer(substream); |
862c2c0a TB |
614 | } |
615 | ||
616 | /* prepare callback */ | |
617 | static int snd_sgio2audio_pcm_prepare(struct snd_pcm_substream *substream) | |
618 | { | |
619 | struct snd_sgio2audio *chip = snd_pcm_substream_chip(substream); | |
620 | struct snd_pcm_runtime *runtime = substream->runtime; | |
621 | struct snd_sgio2audio_chan *chan = substream->runtime->private_data; | |
622 | int ch = chan->idx; | |
623 | unsigned long flags; | |
624 | ||
625 | spin_lock_irqsave(&chip->channel[ch].lock, flags); | |
626 | ||
627 | /* Setup the pseudo-dma transfer pointers. */ | |
628 | chip->channel[ch].pos = 0; | |
629 | chip->channel[ch].size = 0; | |
630 | chip->channel[ch].substream = substream; | |
631 | ||
632 | /* set AD1843 format */ | |
633 | /* hardware format is always S16_LE */ | |
634 | switch (substream->stream) { | |
635 | case SNDRV_PCM_STREAM_PLAYBACK: | |
636 | ad1843_setup_dac(&chip->ad1843, | |
637 | ch - 1, | |
638 | runtime->rate, | |
639 | SNDRV_PCM_FORMAT_S16_LE, | |
640 | runtime->channels); | |
641 | break; | |
642 | case SNDRV_PCM_STREAM_CAPTURE: | |
643 | ad1843_setup_adc(&chip->ad1843, | |
644 | runtime->rate, | |
645 | SNDRV_PCM_FORMAT_S16_LE, | |
646 | runtime->channels); | |
647 | break; | |
648 | } | |
649 | spin_unlock_irqrestore(&chip->channel[ch].lock, flags); | |
650 | return 0; | |
651 | } | |
652 | ||
653 | /* trigger callback */ | |
654 | static int snd_sgio2audio_pcm_trigger(struct snd_pcm_substream *substream, | |
655 | int cmd) | |
656 | { | |
657 | switch (cmd) { | |
658 | case SNDRV_PCM_TRIGGER_START: | |
659 | /* start the PCM engine */ | |
660 | snd_sgio2audio_dma_start(substream); | |
661 | break; | |
662 | case SNDRV_PCM_TRIGGER_STOP: | |
663 | /* stop the PCM engine */ | |
664 | snd_sgio2audio_dma_stop(substream); | |
665 | break; | |
666 | default: | |
667 | return -EINVAL; | |
668 | } | |
669 | return 0; | |
670 | } | |
671 | ||
672 | /* pointer callback */ | |
673 | static snd_pcm_uframes_t | |
674 | snd_sgio2audio_pcm_pointer(struct snd_pcm_substream *substream) | |
675 | { | |
676 | struct snd_sgio2audio *chip = snd_pcm_substream_chip(substream); | |
677 | struct snd_sgio2audio_chan *chan = substream->runtime->private_data; | |
678 | ||
679 | /* get the current hardware pointer */ | |
680 | return bytes_to_frames(substream->runtime, | |
681 | chip->channel[chan->idx].pos); | |
682 | } | |
683 | ||
862c2c0a TB |
684 | /* operators */ |
685 | static struct snd_pcm_ops snd_sgio2audio_playback1_ops = { | |
686 | .open = snd_sgio2audio_playback1_open, | |
687 | .close = snd_sgio2audio_pcm_close, | |
688 | .ioctl = snd_pcm_lib_ioctl, | |
689 | .hw_params = snd_sgio2audio_pcm_hw_params, | |
690 | .hw_free = snd_sgio2audio_pcm_hw_free, | |
691 | .prepare = snd_sgio2audio_pcm_prepare, | |
692 | .trigger = snd_sgio2audio_pcm_trigger, | |
693 | .pointer = snd_sgio2audio_pcm_pointer, | |
6cedf869 | 694 | .page = snd_pcm_lib_get_vmalloc_page, |
c32d977b | 695 | .mmap = snd_pcm_lib_mmap_vmalloc, |
862c2c0a TB |
696 | }; |
697 | ||
698 | static struct snd_pcm_ops snd_sgio2audio_playback2_ops = { | |
699 | .open = snd_sgio2audio_playback2_open, | |
700 | .close = snd_sgio2audio_pcm_close, | |
701 | .ioctl = snd_pcm_lib_ioctl, | |
702 | .hw_params = snd_sgio2audio_pcm_hw_params, | |
703 | .hw_free = snd_sgio2audio_pcm_hw_free, | |
704 | .prepare = snd_sgio2audio_pcm_prepare, | |
705 | .trigger = snd_sgio2audio_pcm_trigger, | |
706 | .pointer = snd_sgio2audio_pcm_pointer, | |
6cedf869 | 707 | .page = snd_pcm_lib_get_vmalloc_page, |
c32d977b | 708 | .mmap = snd_pcm_lib_mmap_vmalloc, |
862c2c0a TB |
709 | }; |
710 | ||
711 | static struct snd_pcm_ops snd_sgio2audio_capture_ops = { | |
712 | .open = snd_sgio2audio_capture_open, | |
713 | .close = snd_sgio2audio_pcm_close, | |
714 | .ioctl = snd_pcm_lib_ioctl, | |
715 | .hw_params = snd_sgio2audio_pcm_hw_params, | |
716 | .hw_free = snd_sgio2audio_pcm_hw_free, | |
717 | .prepare = snd_sgio2audio_pcm_prepare, | |
718 | .trigger = snd_sgio2audio_pcm_trigger, | |
719 | .pointer = snd_sgio2audio_pcm_pointer, | |
6cedf869 | 720 | .page = snd_pcm_lib_get_vmalloc_page, |
c32d977b | 721 | .mmap = snd_pcm_lib_mmap_vmalloc, |
862c2c0a TB |
722 | }; |
723 | ||
724 | /* | |
725 | * definitions of capture are omitted here... | |
726 | */ | |
727 | ||
728 | /* create a pcm device */ | |
729 | static int __devinit snd_sgio2audio_new_pcm(struct snd_sgio2audio *chip) | |
730 | { | |
731 | struct snd_pcm *pcm; | |
732 | int err; | |
733 | ||
734 | /* create first pcm device with one outputs and one input */ | |
735 | err = snd_pcm_new(chip->card, "SGI O2 Audio", 0, 1, 1, &pcm); | |
736 | if (err < 0) | |
737 | return err; | |
738 | ||
739 | pcm->private_data = chip; | |
740 | strcpy(pcm->name, "SGI O2 DAC1"); | |
741 | ||
742 | /* set operators */ | |
743 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, | |
744 | &snd_sgio2audio_playback1_ops); | |
745 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, | |
746 | &snd_sgio2audio_capture_ops); | |
747 | ||
748 | /* create second pcm device with one outputs and no input */ | |
749 | err = snd_pcm_new(chip->card, "SGI O2 Audio", 1, 1, 0, &pcm); | |
750 | if (err < 0) | |
751 | return err; | |
752 | ||
753 | pcm->private_data = chip; | |
754 | strcpy(pcm->name, "SGI O2 DAC2"); | |
755 | ||
756 | /* set operators */ | |
757 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, | |
758 | &snd_sgio2audio_playback2_ops); | |
759 | ||
760 | return 0; | |
761 | } | |
762 | ||
763 | static struct { | |
764 | int idx; | |
765 | int irq; | |
766 | irqreturn_t (*isr)(int, void *); | |
767 | const char *desc; | |
768 | } snd_sgio2_isr_table[] = { | |
769 | { | |
770 | .idx = 0, | |
771 | .irq = MACEISA_AUDIO1_DMAT_IRQ, | |
772 | .isr = snd_sgio2audio_dma_in_isr, | |
773 | .desc = "Capture DMA Channel 0" | |
774 | }, { | |
775 | .idx = 0, | |
776 | .irq = MACEISA_AUDIO1_OF_IRQ, | |
777 | .isr = snd_sgio2audio_error_isr, | |
778 | .desc = "Capture Overflow" | |
779 | }, { | |
780 | .idx = 1, | |
781 | .irq = MACEISA_AUDIO2_DMAT_IRQ, | |
782 | .isr = snd_sgio2audio_dma_out_isr, | |
783 | .desc = "Playback DMA Channel 1" | |
784 | }, { | |
785 | .idx = 1, | |
786 | .irq = MACEISA_AUDIO2_MERR_IRQ, | |
787 | .isr = snd_sgio2audio_error_isr, | |
788 | .desc = "Memory Error Channel 1" | |
789 | }, { | |
790 | .idx = 2, | |
791 | .irq = MACEISA_AUDIO3_DMAT_IRQ, | |
792 | .isr = snd_sgio2audio_dma_out_isr, | |
793 | .desc = "Playback DMA Channel 2" | |
794 | }, { | |
795 | .idx = 2, | |
796 | .irq = MACEISA_AUDIO3_MERR_IRQ, | |
797 | .isr = snd_sgio2audio_error_isr, | |
798 | .desc = "Memory Error Channel 2" | |
799 | } | |
800 | }; | |
801 | ||
802 | /* ALSA driver */ | |
803 | ||
804 | static int snd_sgio2audio_free(struct snd_sgio2audio *chip) | |
805 | { | |
806 | int i; | |
807 | ||
808 | /* reset interface */ | |
809 | writeq(AUDIO_CONTROL_RESET, &mace->perif.audio.control); | |
810 | udelay(1); | |
811 | writeq(0, &mace->perif.audio.control); | |
812 | ||
813 | /* release IRQ's */ | |
814 | for (i = 0; i < ARRAY_SIZE(snd_sgio2_isr_table); i++) | |
815 | free_irq(snd_sgio2_isr_table[i].irq, | |
816 | &chip->channel[snd_sgio2_isr_table[i].idx]); | |
817 | ||
818 | dma_free_coherent(NULL, MACEISA_RINGBUFFERS_SIZE, | |
819 | chip->ring_base, chip->ring_base_dma); | |
820 | ||
821 | /* release card data */ | |
822 | kfree(chip); | |
823 | return 0; | |
824 | } | |
825 | ||
826 | static int snd_sgio2audio_dev_free(struct snd_device *device) | |
827 | { | |
828 | struct snd_sgio2audio *chip = device->device_data; | |
829 | ||
830 | return snd_sgio2audio_free(chip); | |
831 | } | |
832 | ||
833 | static struct snd_device_ops ops = { | |
834 | .dev_free = snd_sgio2audio_dev_free, | |
835 | }; | |
836 | ||
837 | static int __devinit snd_sgio2audio_create(struct snd_card *card, | |
838 | struct snd_sgio2audio **rchip) | |
839 | { | |
840 | struct snd_sgio2audio *chip; | |
841 | int i, err; | |
842 | ||
843 | *rchip = NULL; | |
844 | ||
845 | /* check if a codec is attached to the interface */ | |
846 | /* (Audio or Audio/Video board present) */ | |
847 | if (!(readq(&mace->perif.audio.control) & AUDIO_CONTROL_CODEC_PRESENT)) | |
848 | return -ENOENT; | |
849 | ||
850 | chip = kzalloc(sizeof(struct snd_sgio2audio), GFP_KERNEL); | |
851 | if (chip == NULL) | |
852 | return -ENOMEM; | |
853 | ||
854 | chip->card = card; | |
855 | ||
856 | chip->ring_base = dma_alloc_coherent(NULL, MACEISA_RINGBUFFERS_SIZE, | |
857 | &chip->ring_base_dma, GFP_USER); | |
858 | if (chip->ring_base == NULL) { | |
859 | printk(KERN_ERR | |
860 | "sgio2audio: could not allocate ring buffers\n"); | |
861 | kfree(chip); | |
862 | return -ENOMEM; | |
863 | } | |
864 | ||
865 | spin_lock_init(&chip->ad1843_lock); | |
866 | ||
867 | /* initialize channels */ | |
868 | for (i = 0; i < 3; i++) { | |
869 | spin_lock_init(&chip->channel[i].lock); | |
870 | chip->channel[i].idx = i; | |
871 | } | |
872 | ||
873 | /* allocate IRQs */ | |
874 | for (i = 0; i < ARRAY_SIZE(snd_sgio2_isr_table); i++) { | |
875 | if (request_irq(snd_sgio2_isr_table[i].irq, | |
876 | snd_sgio2_isr_table[i].isr, | |
877 | 0, | |
878 | snd_sgio2_isr_table[i].desc, | |
879 | &chip->channel[snd_sgio2_isr_table[i].idx])) { | |
880 | snd_sgio2audio_free(chip); | |
881 | printk(KERN_ERR "sgio2audio: cannot allocate irq %d\n", | |
882 | snd_sgio2_isr_table[i].irq); | |
883 | return -EBUSY; | |
884 | } | |
885 | } | |
886 | ||
887 | /* reset the interface */ | |
888 | writeq(AUDIO_CONTROL_RESET, &mace->perif.audio.control); | |
889 | udelay(1); | |
890 | writeq(0, &mace->perif.audio.control); | |
891 | msleep_interruptible(1); /* give time to recover */ | |
892 | ||
893 | /* set ring base */ | |
894 | writeq(chip->ring_base_dma, &mace->perif.ctrl.ringbase); | |
895 | ||
896 | /* attach the AD1843 codec */ | |
897 | chip->ad1843.read = read_ad1843_reg; | |
898 | chip->ad1843.write = write_ad1843_reg; | |
899 | chip->ad1843.chip = chip; | |
900 | ||
901 | /* initialize the AD1843 codec */ | |
902 | err = ad1843_init(&chip->ad1843); | |
903 | if (err < 0) { | |
904 | snd_sgio2audio_free(chip); | |
905 | return err; | |
906 | } | |
907 | ||
908 | err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops); | |
909 | if (err < 0) { | |
910 | snd_sgio2audio_free(chip); | |
911 | return err; | |
912 | } | |
913 | *rchip = chip; | |
914 | return 0; | |
915 | } | |
916 | ||
917 | static int __devinit snd_sgio2audio_probe(struct platform_device *pdev) | |
918 | { | |
919 | struct snd_card *card; | |
920 | struct snd_sgio2audio *chip; | |
921 | int err; | |
922 | ||
bd7dd77c TI |
923 | err = snd_card_create(index, id, THIS_MODULE, 0, &card); |
924 | if (err < 0) | |
925 | return err; | |
862c2c0a TB |
926 | |
927 | err = snd_sgio2audio_create(card, &chip); | |
928 | if (err < 0) { | |
929 | snd_card_free(card); | |
930 | return err; | |
931 | } | |
932 | snd_card_set_dev(card, &pdev->dev); | |
933 | ||
934 | err = snd_sgio2audio_new_pcm(chip); | |
935 | if (err < 0) { | |
936 | snd_card_free(card); | |
937 | return err; | |
938 | } | |
939 | err = snd_sgio2audio_new_mixer(chip); | |
940 | if (err < 0) { | |
941 | snd_card_free(card); | |
942 | return err; | |
943 | } | |
944 | ||
945 | strcpy(card->driver, "SGI O2 Audio"); | |
946 | strcpy(card->shortname, "SGI O2 Audio"); | |
947 | sprintf(card->longname, "%s irq %i-%i", | |
948 | card->shortname, | |
949 | MACEISA_AUDIO1_DMAT_IRQ, | |
950 | MACEISA_AUDIO3_MERR_IRQ); | |
951 | ||
952 | err = snd_card_register(card); | |
953 | if (err < 0) { | |
954 | snd_card_free(card); | |
955 | return err; | |
956 | } | |
957 | platform_set_drvdata(pdev, card); | |
958 | return 0; | |
959 | } | |
960 | ||
2f229a31 | 961 | static int __devexit snd_sgio2audio_remove(struct platform_device *pdev) |
862c2c0a TB |
962 | { |
963 | struct snd_card *card = platform_get_drvdata(pdev); | |
964 | ||
965 | snd_card_free(card); | |
966 | platform_set_drvdata(pdev, NULL); | |
967 | return 0; | |
968 | } | |
969 | ||
970 | static struct platform_driver sgio2audio_driver = { | |
971 | .probe = snd_sgio2audio_probe, | |
972 | .remove = __devexit_p(snd_sgio2audio_remove), | |
973 | .driver = { | |
974 | .name = "sgio2audio", | |
975 | .owner = THIS_MODULE, | |
976 | } | |
977 | }; | |
978 | ||
51451b8d | 979 | module_platform_driver(sgio2audio_driver); |