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1a59d1b8 | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
862c2c0a TB |
2 | /* |
3 | * Sound driver for Silicon Graphics O2 Workstations A/V board audio. | |
4 | * | |
5 | * Copyright 2003 Vivien Chappelier <vivien.chappelier@linux-mips.org> | |
6 | * Copyright 2008 Thomas Bogendoerfer <tsbogend@alpha.franken.de> | |
7 | * Mxier part taken from mace_audio.c: | |
8 | * Copyright 2007 Thorben Jändling <tj.trevelyan@gmail.com> | |
862c2c0a TB |
9 | */ |
10 | ||
11 | #include <linux/init.h> | |
12 | #include <linux/delay.h> | |
13 | #include <linux/spinlock.h> | |
862c2c0a TB |
14 | #include <linux/interrupt.h> |
15 | #include <linux/dma-mapping.h> | |
16 | #include <linux/platform_device.h> | |
17 | #include <linux/io.h> | |
5a0e3ad6 | 18 | #include <linux/slab.h> |
da155d5b | 19 | #include <linux/module.h> |
862c2c0a TB |
20 | |
21 | #include <asm/ip32/ip32_ints.h> | |
22 | #include <asm/ip32/mace.h> | |
23 | ||
24 | #include <sound/core.h> | |
25 | #include <sound/control.h> | |
26 | #include <sound/pcm.h> | |
27 | #define SNDRV_GET_ID | |
28 | #include <sound/initval.h> | |
29 | #include <sound/ad1843.h> | |
30 | ||
31 | ||
32 | MODULE_AUTHOR("Vivien Chappelier <vivien.chappelier@linux-mips.org>"); | |
33 | MODULE_DESCRIPTION("SGI O2 Audio"); | |
34 | MODULE_LICENSE("GPL"); | |
862c2c0a TB |
35 | |
36 | static int index = SNDRV_DEFAULT_IDX1; /* Index 0-MAX */ | |
37 | static char *id = SNDRV_DEFAULT_STR1; /* ID for this card */ | |
38 | ||
39 | module_param(index, int, 0444); | |
40 | MODULE_PARM_DESC(index, "Index value for SGI O2 soundcard."); | |
41 | module_param(id, charp, 0444); | |
42 | MODULE_PARM_DESC(id, "ID string for SGI O2 soundcard."); | |
43 | ||
44 | ||
45 | #define AUDIO_CONTROL_RESET BIT(0) /* 1: reset audio interface */ | |
46 | #define AUDIO_CONTROL_CODEC_PRESENT BIT(1) /* 1: codec detected */ | |
47 | ||
48 | #define CODEC_CONTROL_WORD_SHIFT 0 | |
49 | #define CODEC_CONTROL_READ BIT(16) | |
50 | #define CODEC_CONTROL_ADDRESS_SHIFT 17 | |
51 | ||
52 | #define CHANNEL_CONTROL_RESET BIT(10) /* 1: reset channel */ | |
53 | #define CHANNEL_DMA_ENABLE BIT(9) /* 1: enable DMA transfer */ | |
54 | #define CHANNEL_INT_THRESHOLD_DISABLED (0 << 5) /* interrupt disabled */ | |
55 | #define CHANNEL_INT_THRESHOLD_25 (1 << 5) /* int on buffer >25% full */ | |
56 | #define CHANNEL_INT_THRESHOLD_50 (2 << 5) /* int on buffer >50% full */ | |
57 | #define CHANNEL_INT_THRESHOLD_75 (3 << 5) /* int on buffer >75% full */ | |
58 | #define CHANNEL_INT_THRESHOLD_EMPTY (4 << 5) /* int on buffer empty */ | |
59 | #define CHANNEL_INT_THRESHOLD_NOT_EMPTY (5 << 5) /* int on buffer !empty */ | |
60 | #define CHANNEL_INT_THRESHOLD_FULL (6 << 5) /* int on buffer empty */ | |
61 | #define CHANNEL_INT_THRESHOLD_NOT_FULL (7 << 5) /* int on buffer !empty */ | |
62 | ||
63 | #define CHANNEL_RING_SHIFT 12 | |
64 | #define CHANNEL_RING_SIZE (1 << CHANNEL_RING_SHIFT) | |
65 | #define CHANNEL_RING_MASK (CHANNEL_RING_SIZE - 1) | |
66 | ||
67 | #define CHANNEL_LEFT_SHIFT 40 | |
68 | #define CHANNEL_RIGHT_SHIFT 8 | |
69 | ||
70 | struct snd_sgio2audio_chan { | |
71 | int idx; | |
72 | struct snd_pcm_substream *substream; | |
73 | int pos; | |
74 | snd_pcm_uframes_t size; | |
75 | spinlock_t lock; | |
76 | }; | |
77 | ||
78 | /* definition of the chip-specific record */ | |
79 | struct snd_sgio2audio { | |
80 | struct snd_card *card; | |
81 | ||
82 | /* codec */ | |
83 | struct snd_ad1843 ad1843; | |
84 | spinlock_t ad1843_lock; | |
85 | ||
86 | /* channels */ | |
87 | struct snd_sgio2audio_chan channel[3]; | |
88 | ||
89 | /* resources */ | |
90 | void *ring_base; | |
91 | dma_addr_t ring_base_dma; | |
92 | }; | |
93 | ||
94 | /* AD1843 access */ | |
95 | ||
96 | /* | |
97 | * read_ad1843_reg returns the current contents of a 16 bit AD1843 register. | |
98 | * | |
99 | * Returns unsigned register value on success, -errno on failure. | |
100 | */ | |
101 | static int read_ad1843_reg(void *priv, int reg) | |
102 | { | |
103 | struct snd_sgio2audio *chip = priv; | |
104 | int val; | |
105 | unsigned long flags; | |
106 | ||
107 | spin_lock_irqsave(&chip->ad1843_lock, flags); | |
108 | ||
109 | writeq((reg << CODEC_CONTROL_ADDRESS_SHIFT) | | |
110 | CODEC_CONTROL_READ, &mace->perif.audio.codec_control); | |
111 | wmb(); | |
112 | val = readq(&mace->perif.audio.codec_control); /* flush bus */ | |
113 | udelay(200); | |
114 | ||
115 | val = readq(&mace->perif.audio.codec_read); | |
116 | ||
117 | spin_unlock_irqrestore(&chip->ad1843_lock, flags); | |
118 | return val; | |
119 | } | |
120 | ||
121 | /* | |
122 | * write_ad1843_reg writes the specified value to a 16 bit AD1843 register. | |
123 | */ | |
124 | static int write_ad1843_reg(void *priv, int reg, int word) | |
125 | { | |
126 | struct snd_sgio2audio *chip = priv; | |
127 | int val; | |
128 | unsigned long flags; | |
129 | ||
130 | spin_lock_irqsave(&chip->ad1843_lock, flags); | |
131 | ||
132 | writeq((reg << CODEC_CONTROL_ADDRESS_SHIFT) | | |
133 | (word << CODEC_CONTROL_WORD_SHIFT), | |
134 | &mace->perif.audio.codec_control); | |
135 | wmb(); | |
136 | val = readq(&mace->perif.audio.codec_control); /* flush bus */ | |
137 | udelay(200); | |
138 | ||
139 | spin_unlock_irqrestore(&chip->ad1843_lock, flags); | |
140 | return 0; | |
141 | } | |
142 | ||
143 | static int sgio2audio_gain_info(struct snd_kcontrol *kcontrol, | |
144 | struct snd_ctl_elem_info *uinfo) | |
145 | { | |
146 | struct snd_sgio2audio *chip = snd_kcontrol_chip(kcontrol); | |
147 | ||
148 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; | |
149 | uinfo->count = 2; | |
150 | uinfo->value.integer.min = 0; | |
151 | uinfo->value.integer.max = ad1843_get_gain_max(&chip->ad1843, | |
152 | (int)kcontrol->private_value); | |
153 | return 0; | |
154 | } | |
155 | ||
156 | static int sgio2audio_gain_get(struct snd_kcontrol *kcontrol, | |
157 | struct snd_ctl_elem_value *ucontrol) | |
158 | { | |
159 | struct snd_sgio2audio *chip = snd_kcontrol_chip(kcontrol); | |
160 | int vol; | |
161 | ||
162 | vol = ad1843_get_gain(&chip->ad1843, (int)kcontrol->private_value); | |
163 | ||
164 | ucontrol->value.integer.value[0] = (vol >> 8) & 0xFF; | |
165 | ucontrol->value.integer.value[1] = vol & 0xFF; | |
166 | ||
167 | return 0; | |
168 | } | |
169 | ||
170 | static int sgio2audio_gain_put(struct snd_kcontrol *kcontrol, | |
171 | struct snd_ctl_elem_value *ucontrol) | |
172 | { | |
173 | struct snd_sgio2audio *chip = snd_kcontrol_chip(kcontrol); | |
174 | int newvol, oldvol; | |
175 | ||
176 | oldvol = ad1843_get_gain(&chip->ad1843, kcontrol->private_value); | |
177 | newvol = (ucontrol->value.integer.value[0] << 8) | | |
178 | ucontrol->value.integer.value[1]; | |
179 | ||
180 | newvol = ad1843_set_gain(&chip->ad1843, kcontrol->private_value, | |
181 | newvol); | |
182 | ||
183 | return newvol != oldvol; | |
184 | } | |
185 | ||
186 | static int sgio2audio_source_info(struct snd_kcontrol *kcontrol, | |
187 | struct snd_ctl_elem_info *uinfo) | |
188 | { | |
2a2085ab | 189 | static const char * const texts[3] = { |
862c2c0a TB |
190 | "Cam Mic", "Mic", "Line" |
191 | }; | |
2a2085ab | 192 | return snd_ctl_enum_info(uinfo, 1, 3, texts); |
862c2c0a TB |
193 | } |
194 | ||
195 | static int sgio2audio_source_get(struct snd_kcontrol *kcontrol, | |
196 | struct snd_ctl_elem_value *ucontrol) | |
197 | { | |
198 | struct snd_sgio2audio *chip = snd_kcontrol_chip(kcontrol); | |
199 | ||
200 | ucontrol->value.enumerated.item[0] = ad1843_get_recsrc(&chip->ad1843); | |
201 | return 0; | |
202 | } | |
203 | ||
204 | static int sgio2audio_source_put(struct snd_kcontrol *kcontrol, | |
205 | struct snd_ctl_elem_value *ucontrol) | |
206 | { | |
207 | struct snd_sgio2audio *chip = snd_kcontrol_chip(kcontrol); | |
208 | int newsrc, oldsrc; | |
209 | ||
210 | oldsrc = ad1843_get_recsrc(&chip->ad1843); | |
211 | newsrc = ad1843_set_recsrc(&chip->ad1843, | |
212 | ucontrol->value.enumerated.item[0]); | |
213 | ||
214 | return newsrc != oldsrc; | |
215 | } | |
216 | ||
217 | /* dac1/pcm0 mixer control */ | |
905e46ac | 218 | static const struct snd_kcontrol_new sgio2audio_ctrl_pcm0 = { |
862c2c0a TB |
219 | .iface = SNDRV_CTL_ELEM_IFACE_MIXER, |
220 | .name = "PCM Playback Volume", | |
221 | .index = 0, | |
222 | .access = SNDRV_CTL_ELEM_ACCESS_READWRITE, | |
223 | .private_value = AD1843_GAIN_PCM_0, | |
224 | .info = sgio2audio_gain_info, | |
225 | .get = sgio2audio_gain_get, | |
226 | .put = sgio2audio_gain_put, | |
227 | }; | |
228 | ||
229 | /* dac2/pcm1 mixer control */ | |
905e46ac | 230 | static const struct snd_kcontrol_new sgio2audio_ctrl_pcm1 = { |
862c2c0a TB |
231 | .iface = SNDRV_CTL_ELEM_IFACE_MIXER, |
232 | .name = "PCM Playback Volume", | |
233 | .index = 1, | |
234 | .access = SNDRV_CTL_ELEM_ACCESS_READWRITE, | |
235 | .private_value = AD1843_GAIN_PCM_1, | |
236 | .info = sgio2audio_gain_info, | |
237 | .get = sgio2audio_gain_get, | |
238 | .put = sgio2audio_gain_put, | |
239 | }; | |
240 | ||
241 | /* record level mixer control */ | |
905e46ac | 242 | static const struct snd_kcontrol_new sgio2audio_ctrl_reclevel = { |
862c2c0a TB |
243 | .iface = SNDRV_CTL_ELEM_IFACE_MIXER, |
244 | .name = "Capture Volume", | |
245 | .access = SNDRV_CTL_ELEM_ACCESS_READWRITE, | |
246 | .private_value = AD1843_GAIN_RECLEV, | |
247 | .info = sgio2audio_gain_info, | |
248 | .get = sgio2audio_gain_get, | |
249 | .put = sgio2audio_gain_put, | |
250 | }; | |
251 | ||
252 | /* record level source control */ | |
905e46ac | 253 | static const struct snd_kcontrol_new sgio2audio_ctrl_recsource = { |
862c2c0a TB |
254 | .iface = SNDRV_CTL_ELEM_IFACE_MIXER, |
255 | .name = "Capture Source", | |
256 | .access = SNDRV_CTL_ELEM_ACCESS_READWRITE, | |
257 | .info = sgio2audio_source_info, | |
258 | .get = sgio2audio_source_get, | |
259 | .put = sgio2audio_source_put, | |
260 | }; | |
261 | ||
262 | /* line mixer control */ | |
905e46ac | 263 | static const struct snd_kcontrol_new sgio2audio_ctrl_line = { |
862c2c0a TB |
264 | .iface = SNDRV_CTL_ELEM_IFACE_MIXER, |
265 | .name = "Line Playback Volume", | |
266 | .index = 0, | |
267 | .access = SNDRV_CTL_ELEM_ACCESS_READWRITE, | |
268 | .private_value = AD1843_GAIN_LINE, | |
269 | .info = sgio2audio_gain_info, | |
270 | .get = sgio2audio_gain_get, | |
271 | .put = sgio2audio_gain_put, | |
272 | }; | |
273 | ||
274 | /* cd mixer control */ | |
905e46ac | 275 | static const struct snd_kcontrol_new sgio2audio_ctrl_cd = { |
862c2c0a TB |
276 | .iface = SNDRV_CTL_ELEM_IFACE_MIXER, |
277 | .name = "Line Playback Volume", | |
278 | .index = 1, | |
279 | .access = SNDRV_CTL_ELEM_ACCESS_READWRITE, | |
280 | .private_value = AD1843_GAIN_LINE_2, | |
281 | .info = sgio2audio_gain_info, | |
282 | .get = sgio2audio_gain_get, | |
283 | .put = sgio2audio_gain_put, | |
284 | }; | |
285 | ||
286 | /* mic mixer control */ | |
905e46ac | 287 | static const struct snd_kcontrol_new sgio2audio_ctrl_mic = { |
862c2c0a TB |
288 | .iface = SNDRV_CTL_ELEM_IFACE_MIXER, |
289 | .name = "Mic Playback Volume", | |
290 | .access = SNDRV_CTL_ELEM_ACCESS_READWRITE, | |
291 | .private_value = AD1843_GAIN_MIC, | |
292 | .info = sgio2audio_gain_info, | |
293 | .get = sgio2audio_gain_get, | |
294 | .put = sgio2audio_gain_put, | |
295 | }; | |
296 | ||
297 | ||
e0f8cb5f | 298 | static int snd_sgio2audio_new_mixer(struct snd_sgio2audio *chip) |
862c2c0a TB |
299 | { |
300 | int err; | |
301 | ||
302 | err = snd_ctl_add(chip->card, | |
303 | snd_ctl_new1(&sgio2audio_ctrl_pcm0, chip)); | |
304 | if (err < 0) | |
305 | return err; | |
306 | ||
307 | err = snd_ctl_add(chip->card, | |
308 | snd_ctl_new1(&sgio2audio_ctrl_pcm1, chip)); | |
309 | if (err < 0) | |
310 | return err; | |
311 | ||
312 | err = snd_ctl_add(chip->card, | |
313 | snd_ctl_new1(&sgio2audio_ctrl_reclevel, chip)); | |
314 | if (err < 0) | |
315 | return err; | |
316 | ||
317 | err = snd_ctl_add(chip->card, | |
318 | snd_ctl_new1(&sgio2audio_ctrl_recsource, chip)); | |
319 | if (err < 0) | |
320 | return err; | |
321 | err = snd_ctl_add(chip->card, | |
322 | snd_ctl_new1(&sgio2audio_ctrl_line, chip)); | |
323 | if (err < 0) | |
324 | return err; | |
325 | ||
326 | err = snd_ctl_add(chip->card, | |
327 | snd_ctl_new1(&sgio2audio_ctrl_cd, chip)); | |
328 | if (err < 0) | |
329 | return err; | |
330 | ||
331 | err = snd_ctl_add(chip->card, | |
332 | snd_ctl_new1(&sgio2audio_ctrl_mic, chip)); | |
333 | if (err < 0) | |
334 | return err; | |
335 | ||
336 | return 0; | |
337 | } | |
338 | ||
339 | /* low-level audio interface DMA */ | |
340 | ||
341 | /* get data out of bounce buffer, count must be a multiple of 32 */ | |
342 | /* returns 1 if a period has elapsed */ | |
343 | static int snd_sgio2audio_dma_pull_frag(struct snd_sgio2audio *chip, | |
344 | unsigned int ch, unsigned int count) | |
345 | { | |
346 | int ret; | |
347 | unsigned long src_base, src_pos, dst_mask; | |
348 | unsigned char *dst_base; | |
349 | int dst_pos; | |
350 | u64 *src; | |
351 | s16 *dst; | |
352 | u64 x; | |
353 | unsigned long flags; | |
354 | struct snd_pcm_runtime *runtime = chip->channel[ch].substream->runtime; | |
355 | ||
356 | spin_lock_irqsave(&chip->channel[ch].lock, flags); | |
357 | ||
358 | src_base = (unsigned long) chip->ring_base | (ch << CHANNEL_RING_SHIFT); | |
359 | src_pos = readq(&mace->perif.audio.chan[ch].read_ptr); | |
360 | dst_base = runtime->dma_area; | |
361 | dst_pos = chip->channel[ch].pos; | |
362 | dst_mask = frames_to_bytes(runtime, runtime->buffer_size) - 1; | |
363 | ||
364 | /* check if a period has elapsed */ | |
365 | chip->channel[ch].size += (count >> 3); /* in frames */ | |
366 | ret = chip->channel[ch].size >= runtime->period_size; | |
367 | chip->channel[ch].size %= runtime->period_size; | |
368 | ||
369 | while (count) { | |
370 | src = (u64 *)(src_base + src_pos); | |
371 | dst = (s16 *)(dst_base + dst_pos); | |
372 | ||
373 | x = *src; | |
374 | dst[0] = (x >> CHANNEL_LEFT_SHIFT) & 0xffff; | |
375 | dst[1] = (x >> CHANNEL_RIGHT_SHIFT) & 0xffff; | |
376 | ||
377 | src_pos = (src_pos + sizeof(u64)) & CHANNEL_RING_MASK; | |
378 | dst_pos = (dst_pos + 2 * sizeof(s16)) & dst_mask; | |
379 | count -= sizeof(u64); | |
380 | } | |
381 | ||
382 | writeq(src_pos, &mace->perif.audio.chan[ch].read_ptr); /* in bytes */ | |
383 | chip->channel[ch].pos = dst_pos; | |
384 | ||
385 | spin_unlock_irqrestore(&chip->channel[ch].lock, flags); | |
386 | return ret; | |
387 | } | |
388 | ||
389 | /* put some DMA data in bounce buffer, count must be a multiple of 32 */ | |
390 | /* returns 1 if a period has elapsed */ | |
391 | static int snd_sgio2audio_dma_push_frag(struct snd_sgio2audio *chip, | |
392 | unsigned int ch, unsigned int count) | |
393 | { | |
394 | int ret; | |
395 | s64 l, r; | |
396 | unsigned long dst_base, dst_pos, src_mask; | |
397 | unsigned char *src_base; | |
398 | int src_pos; | |
399 | u64 *dst; | |
400 | s16 *src; | |
401 | unsigned long flags; | |
402 | struct snd_pcm_runtime *runtime = chip->channel[ch].substream->runtime; | |
403 | ||
404 | spin_lock_irqsave(&chip->channel[ch].lock, flags); | |
405 | ||
406 | dst_base = (unsigned long)chip->ring_base | (ch << CHANNEL_RING_SHIFT); | |
407 | dst_pos = readq(&mace->perif.audio.chan[ch].write_ptr); | |
408 | src_base = runtime->dma_area; | |
409 | src_pos = chip->channel[ch].pos; | |
410 | src_mask = frames_to_bytes(runtime, runtime->buffer_size) - 1; | |
411 | ||
412 | /* check if a period has elapsed */ | |
413 | chip->channel[ch].size += (count >> 3); /* in frames */ | |
414 | ret = chip->channel[ch].size >= runtime->period_size; | |
415 | chip->channel[ch].size %= runtime->period_size; | |
416 | ||
417 | while (count) { | |
418 | src = (s16 *)(src_base + src_pos); | |
419 | dst = (u64 *)(dst_base + dst_pos); | |
420 | ||
421 | l = src[0]; /* sign extend */ | |
422 | r = src[1]; /* sign extend */ | |
423 | ||
424 | *dst = ((l & 0x00ffffff) << CHANNEL_LEFT_SHIFT) | | |
425 | ((r & 0x00ffffff) << CHANNEL_RIGHT_SHIFT); | |
426 | ||
427 | dst_pos = (dst_pos + sizeof(u64)) & CHANNEL_RING_MASK; | |
428 | src_pos = (src_pos + 2 * sizeof(s16)) & src_mask; | |
429 | count -= sizeof(u64); | |
430 | } | |
431 | ||
432 | writeq(dst_pos, &mace->perif.audio.chan[ch].write_ptr); /* in bytes */ | |
433 | chip->channel[ch].pos = src_pos; | |
434 | ||
435 | spin_unlock_irqrestore(&chip->channel[ch].lock, flags); | |
436 | return ret; | |
437 | } | |
438 | ||
439 | static int snd_sgio2audio_dma_start(struct snd_pcm_substream *substream) | |
440 | { | |
441 | struct snd_sgio2audio *chip = snd_pcm_substream_chip(substream); | |
442 | struct snd_sgio2audio_chan *chan = substream->runtime->private_data; | |
443 | int ch = chan->idx; | |
444 | ||
445 | /* reset DMA channel */ | |
446 | writeq(CHANNEL_CONTROL_RESET, &mace->perif.audio.chan[ch].control); | |
447 | udelay(10); | |
448 | writeq(0, &mace->perif.audio.chan[ch].control); | |
449 | ||
450 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
451 | /* push a full buffer */ | |
452 | snd_sgio2audio_dma_push_frag(chip, ch, CHANNEL_RING_SIZE - 32); | |
453 | } | |
454 | /* set DMA to wake on 50% empty and enable interrupt */ | |
455 | writeq(CHANNEL_DMA_ENABLE | CHANNEL_INT_THRESHOLD_50, | |
456 | &mace->perif.audio.chan[ch].control); | |
457 | return 0; | |
458 | } | |
459 | ||
460 | static int snd_sgio2audio_dma_stop(struct snd_pcm_substream *substream) | |
461 | { | |
462 | struct snd_sgio2audio_chan *chan = substream->runtime->private_data; | |
463 | ||
464 | writeq(0, &mace->perif.audio.chan[chan->idx].control); | |
465 | return 0; | |
466 | } | |
467 | ||
468 | static irqreturn_t snd_sgio2audio_dma_in_isr(int irq, void *dev_id) | |
469 | { | |
470 | struct snd_sgio2audio_chan *chan = dev_id; | |
471 | struct snd_pcm_substream *substream; | |
472 | struct snd_sgio2audio *chip; | |
473 | int count, ch; | |
474 | ||
475 | substream = chan->substream; | |
476 | chip = snd_pcm_substream_chip(substream); | |
477 | ch = chan->idx; | |
478 | ||
479 | /* empty the ring */ | |
480 | count = CHANNEL_RING_SIZE - | |
481 | readq(&mace->perif.audio.chan[ch].depth) - 32; | |
482 | if (snd_sgio2audio_dma_pull_frag(chip, ch, count)) | |
483 | snd_pcm_period_elapsed(substream); | |
484 | ||
485 | return IRQ_HANDLED; | |
486 | } | |
487 | ||
488 | static irqreturn_t snd_sgio2audio_dma_out_isr(int irq, void *dev_id) | |
489 | { | |
490 | struct snd_sgio2audio_chan *chan = dev_id; | |
491 | struct snd_pcm_substream *substream; | |
492 | struct snd_sgio2audio *chip; | |
493 | int count, ch; | |
494 | ||
495 | substream = chan->substream; | |
496 | chip = snd_pcm_substream_chip(substream); | |
497 | ch = chan->idx; | |
498 | /* fill the ring */ | |
499 | count = CHANNEL_RING_SIZE - | |
500 | readq(&mace->perif.audio.chan[ch].depth) - 32; | |
501 | if (snd_sgio2audio_dma_push_frag(chip, ch, count)) | |
502 | snd_pcm_period_elapsed(substream); | |
503 | ||
504 | return IRQ_HANDLED; | |
505 | } | |
506 | ||
507 | static irqreturn_t snd_sgio2audio_error_isr(int irq, void *dev_id) | |
508 | { | |
509 | struct snd_sgio2audio_chan *chan = dev_id; | |
510 | struct snd_pcm_substream *substream; | |
511 | ||
512 | substream = chan->substream; | |
513 | snd_sgio2audio_dma_stop(substream); | |
514 | snd_sgio2audio_dma_start(substream); | |
515 | return IRQ_HANDLED; | |
516 | } | |
517 | ||
518 | /* PCM part */ | |
519 | /* PCM hardware definition */ | |
3068116f | 520 | static const struct snd_pcm_hardware snd_sgio2audio_pcm_hw = { |
862c2c0a TB |
521 | .info = (SNDRV_PCM_INFO_MMAP | |
522 | SNDRV_PCM_INFO_MMAP_VALID | | |
523 | SNDRV_PCM_INFO_INTERLEAVED | | |
524 | SNDRV_PCM_INFO_BLOCK_TRANSFER), | |
525 | .formats = SNDRV_PCM_FMTBIT_S16_BE, | |
526 | .rates = SNDRV_PCM_RATE_8000_48000, | |
527 | .rate_min = 8000, | |
528 | .rate_max = 48000, | |
529 | .channels_min = 2, | |
530 | .channels_max = 2, | |
531 | .buffer_bytes_max = 65536, | |
532 | .period_bytes_min = 32768, | |
533 | .period_bytes_max = 65536, | |
534 | .periods_min = 1, | |
535 | .periods_max = 1024, | |
536 | }; | |
537 | ||
538 | /* PCM playback open callback */ | |
539 | static int snd_sgio2audio_playback1_open(struct snd_pcm_substream *substream) | |
540 | { | |
541 | struct snd_sgio2audio *chip = snd_pcm_substream_chip(substream); | |
542 | struct snd_pcm_runtime *runtime = substream->runtime; | |
543 | ||
544 | runtime->hw = snd_sgio2audio_pcm_hw; | |
545 | runtime->private_data = &chip->channel[1]; | |
546 | return 0; | |
547 | } | |
548 | ||
549 | static int snd_sgio2audio_playback2_open(struct snd_pcm_substream *substream) | |
550 | { | |
551 | struct snd_sgio2audio *chip = snd_pcm_substream_chip(substream); | |
552 | struct snd_pcm_runtime *runtime = substream->runtime; | |
553 | ||
554 | runtime->hw = snd_sgio2audio_pcm_hw; | |
555 | runtime->private_data = &chip->channel[2]; | |
556 | return 0; | |
557 | } | |
558 | ||
559 | /* PCM capture open callback */ | |
560 | static int snd_sgio2audio_capture_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[0]; | |
567 | return 0; | |
568 | } | |
569 | ||
570 | /* PCM close callback */ | |
571 | static int snd_sgio2audio_pcm_close(struct snd_pcm_substream *substream) | |
572 | { | |
573 | struct snd_pcm_runtime *runtime = substream->runtime; | |
574 | ||
575 | runtime->private_data = NULL; | |
576 | return 0; | |
577 | } | |
578 | ||
862c2c0a TB |
579 | /* prepare callback */ |
580 | static int snd_sgio2audio_pcm_prepare(struct snd_pcm_substream *substream) | |
581 | { | |
582 | struct snd_sgio2audio *chip = snd_pcm_substream_chip(substream); | |
583 | struct snd_pcm_runtime *runtime = substream->runtime; | |
584 | struct snd_sgio2audio_chan *chan = substream->runtime->private_data; | |
585 | int ch = chan->idx; | |
586 | unsigned long flags; | |
587 | ||
588 | spin_lock_irqsave(&chip->channel[ch].lock, flags); | |
589 | ||
590 | /* Setup the pseudo-dma transfer pointers. */ | |
591 | chip->channel[ch].pos = 0; | |
592 | chip->channel[ch].size = 0; | |
593 | chip->channel[ch].substream = substream; | |
594 | ||
595 | /* set AD1843 format */ | |
596 | /* hardware format is always S16_LE */ | |
597 | switch (substream->stream) { | |
598 | case SNDRV_PCM_STREAM_PLAYBACK: | |
599 | ad1843_setup_dac(&chip->ad1843, | |
600 | ch - 1, | |
601 | runtime->rate, | |
602 | SNDRV_PCM_FORMAT_S16_LE, | |
603 | runtime->channels); | |
604 | break; | |
605 | case SNDRV_PCM_STREAM_CAPTURE: | |
606 | ad1843_setup_adc(&chip->ad1843, | |
607 | runtime->rate, | |
608 | SNDRV_PCM_FORMAT_S16_LE, | |
609 | runtime->channels); | |
610 | break; | |
611 | } | |
612 | spin_unlock_irqrestore(&chip->channel[ch].lock, flags); | |
613 | return 0; | |
614 | } | |
615 | ||
616 | /* trigger callback */ | |
617 | static int snd_sgio2audio_pcm_trigger(struct snd_pcm_substream *substream, | |
618 | int cmd) | |
619 | { | |
620 | switch (cmd) { | |
621 | case SNDRV_PCM_TRIGGER_START: | |
622 | /* start the PCM engine */ | |
623 | snd_sgio2audio_dma_start(substream); | |
624 | break; | |
625 | case SNDRV_PCM_TRIGGER_STOP: | |
626 | /* stop the PCM engine */ | |
627 | snd_sgio2audio_dma_stop(substream); | |
628 | break; | |
629 | default: | |
630 | return -EINVAL; | |
631 | } | |
632 | return 0; | |
633 | } | |
634 | ||
635 | /* pointer callback */ | |
636 | static snd_pcm_uframes_t | |
637 | snd_sgio2audio_pcm_pointer(struct snd_pcm_substream *substream) | |
638 | { | |
639 | struct snd_sgio2audio *chip = snd_pcm_substream_chip(substream); | |
640 | struct snd_sgio2audio_chan *chan = substream->runtime->private_data; | |
641 | ||
642 | /* get the current hardware pointer */ | |
643 | return bytes_to_frames(substream->runtime, | |
644 | chip->channel[chan->idx].pos); | |
645 | } | |
646 | ||
862c2c0a | 647 | /* operators */ |
915a38d3 | 648 | static const struct snd_pcm_ops snd_sgio2audio_playback1_ops = { |
862c2c0a TB |
649 | .open = snd_sgio2audio_playback1_open, |
650 | .close = snd_sgio2audio_pcm_close, | |
862c2c0a TB |
651 | .prepare = snd_sgio2audio_pcm_prepare, |
652 | .trigger = snd_sgio2audio_pcm_trigger, | |
653 | .pointer = snd_sgio2audio_pcm_pointer, | |
862c2c0a TB |
654 | }; |
655 | ||
915a38d3 | 656 | static const struct snd_pcm_ops snd_sgio2audio_playback2_ops = { |
862c2c0a TB |
657 | .open = snd_sgio2audio_playback2_open, |
658 | .close = snd_sgio2audio_pcm_close, | |
862c2c0a TB |
659 | .prepare = snd_sgio2audio_pcm_prepare, |
660 | .trigger = snd_sgio2audio_pcm_trigger, | |
661 | .pointer = snd_sgio2audio_pcm_pointer, | |
862c2c0a TB |
662 | }; |
663 | ||
915a38d3 | 664 | static const struct snd_pcm_ops snd_sgio2audio_capture_ops = { |
862c2c0a TB |
665 | .open = snd_sgio2audio_capture_open, |
666 | .close = snd_sgio2audio_pcm_close, | |
862c2c0a TB |
667 | .prepare = snd_sgio2audio_pcm_prepare, |
668 | .trigger = snd_sgio2audio_pcm_trigger, | |
669 | .pointer = snd_sgio2audio_pcm_pointer, | |
862c2c0a TB |
670 | }; |
671 | ||
672 | /* | |
673 | * definitions of capture are omitted here... | |
674 | */ | |
675 | ||
676 | /* create a pcm device */ | |
e0f8cb5f | 677 | static int snd_sgio2audio_new_pcm(struct snd_sgio2audio *chip) |
862c2c0a TB |
678 | { |
679 | struct snd_pcm *pcm; | |
680 | int err; | |
681 | ||
682 | /* create first pcm device with one outputs and one input */ | |
683 | err = snd_pcm_new(chip->card, "SGI O2 Audio", 0, 1, 1, &pcm); | |
684 | if (err < 0) | |
685 | return err; | |
686 | ||
687 | pcm->private_data = chip; | |
688 | strcpy(pcm->name, "SGI O2 DAC1"); | |
689 | ||
690 | /* set operators */ | |
691 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, | |
692 | &snd_sgio2audio_playback1_ops); | |
693 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, | |
694 | &snd_sgio2audio_capture_ops); | |
ee88f4eb | 695 | snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_VMALLOC, NULL, 0, 0); |
862c2c0a TB |
696 | |
697 | /* create second pcm device with one outputs and no input */ | |
698 | err = snd_pcm_new(chip->card, "SGI O2 Audio", 1, 1, 0, &pcm); | |
699 | if (err < 0) | |
700 | return err; | |
701 | ||
702 | pcm->private_data = chip; | |
703 | strcpy(pcm->name, "SGI O2 DAC2"); | |
704 | ||
705 | /* set operators */ | |
706 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, | |
707 | &snd_sgio2audio_playback2_ops); | |
ee88f4eb | 708 | snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_VMALLOC, NULL, 0, 0); |
862c2c0a TB |
709 | |
710 | return 0; | |
711 | } | |
712 | ||
713 | static struct { | |
714 | int idx; | |
715 | int irq; | |
716 | irqreturn_t (*isr)(int, void *); | |
717 | const char *desc; | |
718 | } snd_sgio2_isr_table[] = { | |
719 | { | |
720 | .idx = 0, | |
721 | .irq = MACEISA_AUDIO1_DMAT_IRQ, | |
722 | .isr = snd_sgio2audio_dma_in_isr, | |
723 | .desc = "Capture DMA Channel 0" | |
724 | }, { | |
725 | .idx = 0, | |
726 | .irq = MACEISA_AUDIO1_OF_IRQ, | |
727 | .isr = snd_sgio2audio_error_isr, | |
728 | .desc = "Capture Overflow" | |
729 | }, { | |
730 | .idx = 1, | |
731 | .irq = MACEISA_AUDIO2_DMAT_IRQ, | |
732 | .isr = snd_sgio2audio_dma_out_isr, | |
733 | .desc = "Playback DMA Channel 1" | |
734 | }, { | |
735 | .idx = 1, | |
736 | .irq = MACEISA_AUDIO2_MERR_IRQ, | |
737 | .isr = snd_sgio2audio_error_isr, | |
738 | .desc = "Memory Error Channel 1" | |
739 | }, { | |
740 | .idx = 2, | |
741 | .irq = MACEISA_AUDIO3_DMAT_IRQ, | |
742 | .isr = snd_sgio2audio_dma_out_isr, | |
743 | .desc = "Playback DMA Channel 2" | |
744 | }, { | |
745 | .idx = 2, | |
746 | .irq = MACEISA_AUDIO3_MERR_IRQ, | |
747 | .isr = snd_sgio2audio_error_isr, | |
748 | .desc = "Memory Error Channel 2" | |
749 | } | |
750 | }; | |
751 | ||
752 | /* ALSA driver */ | |
753 | ||
754 | static int snd_sgio2audio_free(struct snd_sgio2audio *chip) | |
755 | { | |
756 | int i; | |
757 | ||
758 | /* reset interface */ | |
759 | writeq(AUDIO_CONTROL_RESET, &mace->perif.audio.control); | |
760 | udelay(1); | |
761 | writeq(0, &mace->perif.audio.control); | |
762 | ||
763 | /* release IRQ's */ | |
764 | for (i = 0; i < ARRAY_SIZE(snd_sgio2_isr_table); i++) | |
765 | free_irq(snd_sgio2_isr_table[i].irq, | |
766 | &chip->channel[snd_sgio2_isr_table[i].idx]); | |
767 | ||
6a8125c3 | 768 | dma_free_coherent(chip->card->dev, MACEISA_RINGBUFFERS_SIZE, |
862c2c0a TB |
769 | chip->ring_base, chip->ring_base_dma); |
770 | ||
771 | /* release card data */ | |
772 | kfree(chip); | |
773 | return 0; | |
774 | } | |
775 | ||
776 | static int snd_sgio2audio_dev_free(struct snd_device *device) | |
777 | { | |
778 | struct snd_sgio2audio *chip = device->device_data; | |
779 | ||
780 | return snd_sgio2audio_free(chip); | |
781 | } | |
782 | ||
35a76585 | 783 | static const struct snd_device_ops ops = { |
862c2c0a TB |
784 | .dev_free = snd_sgio2audio_dev_free, |
785 | }; | |
786 | ||
e0f8cb5f BP |
787 | static int snd_sgio2audio_create(struct snd_card *card, |
788 | struct snd_sgio2audio **rchip) | |
862c2c0a TB |
789 | { |
790 | struct snd_sgio2audio *chip; | |
791 | int i, err; | |
792 | ||
793 | *rchip = NULL; | |
794 | ||
795 | /* check if a codec is attached to the interface */ | |
796 | /* (Audio or Audio/Video board present) */ | |
797 | if (!(readq(&mace->perif.audio.control) & AUDIO_CONTROL_CODEC_PRESENT)) | |
798 | return -ENOENT; | |
799 | ||
cdc4398b | 800 | chip = kzalloc(sizeof(*chip), GFP_KERNEL); |
862c2c0a TB |
801 | if (chip == NULL) |
802 | return -ENOMEM; | |
803 | ||
804 | chip->card = card; | |
805 | ||
6a8125c3 CH |
806 | chip->ring_base = dma_alloc_coherent(card->dev, |
807 | MACEISA_RINGBUFFERS_SIZE, | |
808 | &chip->ring_base_dma, GFP_KERNEL); | |
862c2c0a TB |
809 | if (chip->ring_base == NULL) { |
810 | printk(KERN_ERR | |
811 | "sgio2audio: could not allocate ring buffers\n"); | |
812 | kfree(chip); | |
813 | return -ENOMEM; | |
814 | } | |
815 | ||
816 | spin_lock_init(&chip->ad1843_lock); | |
817 | ||
818 | /* initialize channels */ | |
819 | for (i = 0; i < 3; i++) { | |
820 | spin_lock_init(&chip->channel[i].lock); | |
821 | chip->channel[i].idx = i; | |
822 | } | |
823 | ||
824 | /* allocate IRQs */ | |
825 | for (i = 0; i < ARRAY_SIZE(snd_sgio2_isr_table); i++) { | |
826 | if (request_irq(snd_sgio2_isr_table[i].irq, | |
827 | snd_sgio2_isr_table[i].isr, | |
828 | 0, | |
829 | snd_sgio2_isr_table[i].desc, | |
830 | &chip->channel[snd_sgio2_isr_table[i].idx])) { | |
831 | snd_sgio2audio_free(chip); | |
832 | printk(KERN_ERR "sgio2audio: cannot allocate irq %d\n", | |
833 | snd_sgio2_isr_table[i].irq); | |
834 | return -EBUSY; | |
835 | } | |
836 | } | |
837 | ||
838 | /* reset the interface */ | |
839 | writeq(AUDIO_CONTROL_RESET, &mace->perif.audio.control); | |
840 | udelay(1); | |
841 | writeq(0, &mace->perif.audio.control); | |
842 | msleep_interruptible(1); /* give time to recover */ | |
843 | ||
844 | /* set ring base */ | |
845 | writeq(chip->ring_base_dma, &mace->perif.ctrl.ringbase); | |
846 | ||
847 | /* attach the AD1843 codec */ | |
848 | chip->ad1843.read = read_ad1843_reg; | |
849 | chip->ad1843.write = write_ad1843_reg; | |
850 | chip->ad1843.chip = chip; | |
851 | ||
852 | /* initialize the AD1843 codec */ | |
853 | err = ad1843_init(&chip->ad1843); | |
854 | if (err < 0) { | |
855 | snd_sgio2audio_free(chip); | |
856 | return err; | |
857 | } | |
858 | ||
859 | err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops); | |
860 | if (err < 0) { | |
861 | snd_sgio2audio_free(chip); | |
862 | return err; | |
863 | } | |
864 | *rchip = chip; | |
865 | return 0; | |
866 | } | |
867 | ||
e0f8cb5f | 868 | static int snd_sgio2audio_probe(struct platform_device *pdev) |
862c2c0a TB |
869 | { |
870 | struct snd_card *card; | |
871 | struct snd_sgio2audio *chip; | |
872 | int err; | |
873 | ||
bee1bb19 | 874 | err = snd_card_new(&pdev->dev, index, id, THIS_MODULE, 0, &card); |
bd7dd77c TI |
875 | if (err < 0) |
876 | return err; | |
862c2c0a TB |
877 | |
878 | err = snd_sgio2audio_create(card, &chip); | |
879 | if (err < 0) { | |
880 | snd_card_free(card); | |
881 | return err; | |
882 | } | |
862c2c0a TB |
883 | |
884 | err = snd_sgio2audio_new_pcm(chip); | |
885 | if (err < 0) { | |
886 | snd_card_free(card); | |
887 | return err; | |
888 | } | |
889 | err = snd_sgio2audio_new_mixer(chip); | |
890 | if (err < 0) { | |
891 | snd_card_free(card); | |
892 | return err; | |
893 | } | |
894 | ||
895 | strcpy(card->driver, "SGI O2 Audio"); | |
896 | strcpy(card->shortname, "SGI O2 Audio"); | |
897 | sprintf(card->longname, "%s irq %i-%i", | |
898 | card->shortname, | |
899 | MACEISA_AUDIO1_DMAT_IRQ, | |
900 | MACEISA_AUDIO3_MERR_IRQ); | |
901 | ||
902 | err = snd_card_register(card); | |
903 | if (err < 0) { | |
904 | snd_card_free(card); | |
905 | return err; | |
906 | } | |
907 | platform_set_drvdata(pdev, card); | |
908 | return 0; | |
909 | } | |
910 | ||
0505c87c | 911 | static void snd_sgio2audio_remove(struct platform_device *pdev) |
862c2c0a TB |
912 | { |
913 | struct snd_card *card = platform_get_drvdata(pdev); | |
914 | ||
915 | snd_card_free(card); | |
862c2c0a TB |
916 | } |
917 | ||
918 | static struct platform_driver sgio2audio_driver = { | |
919 | .probe = snd_sgio2audio_probe, | |
0505c87c | 920 | .remove_new = snd_sgio2audio_remove, |
862c2c0a TB |
921 | .driver = { |
922 | .name = "sgio2audio", | |
862c2c0a TB |
923 | } |
924 | }; | |
925 | ||
51451b8d | 926 | module_platform_driver(sgio2audio_driver); |