Commit | Line | Data |
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198de43d AM |
1 | /* |
2 | * This code is licenced under | |
3 | * the General Public Licence | |
4 | * version 2 | |
5 | * | |
6 | * Copyright Adrian McMenamin 2005, 2006, 2007 | |
7 | * <adrian@mcmen.demon.co.uk> | |
8 | * Requires firmware (BSD licenced) available from: | |
9 | * http://linuxdc.cvs.sourceforge.net/linuxdc/linux-sh-dc/sound/oss/aica/firmware/ | |
10 | * or the maintainer | |
11 | * | |
12 | * This program is free software; you can redistribute it and/or modify | |
13 | * it under the terms of version 2 of the GNU General Public License as published by | |
14 | * the Free Software Foundation. | |
15 | * | |
16 | * This program is distributed in the hope that it will be useful, | |
17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | * GNU General Public License for more details. | |
20 | * | |
21 | * You should have received a copy of the GNU General Public License | |
22 | * along with this program; if not, write to the Free Software | |
23 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
24 | * | |
25 | */ | |
26 | ||
27 | #include <linux/init.h> | |
28 | #include <linux/jiffies.h> | |
29 | #include <linux/slab.h> | |
30 | #include <linux/time.h> | |
31 | #include <linux/wait.h> | |
32 | #include <linux/moduleparam.h> | |
33 | #include <linux/platform_device.h> | |
34 | #include <linux/firmware.h> | |
35 | #include <linux/timer.h> | |
36 | #include <linux/delay.h> | |
37 | #include <linux/workqueue.h> | |
38 | #include <sound/driver.h> | |
39 | #include <sound/core.h> | |
40 | #include <sound/control.h> | |
41 | #include <sound/pcm.h> | |
42 | #include <sound/initval.h> | |
43 | #include <sound/info.h> | |
44 | #include <asm/io.h> | |
45 | #include <asm/dma.h> | |
46 | #include <asm/dreamcast/sysasic.h> | |
47 | #include "aica.h" | |
48 | ||
49 | MODULE_AUTHOR("Adrian McMenamin <adrian@mcmen.demon.co.uk>"); | |
50 | MODULE_DESCRIPTION("Dreamcast AICA sound (pcm) driver"); | |
51 | MODULE_LICENSE("GPL"); | |
52 | MODULE_SUPPORTED_DEVICE("{{Yamaha/SEGA, AICA}}"); | |
53 | ||
54 | /* module parameters */ | |
55 | #define CARD_NAME "AICA" | |
56 | static int index = -1; | |
57 | static char *id; | |
58 | static int enable = 1; | |
59 | module_param(index, int, 0444); | |
60 | MODULE_PARM_DESC(index, "Index value for " CARD_NAME " soundcard."); | |
61 | module_param(id, charp, 0444); | |
62 | MODULE_PARM_DESC(id, "ID string for " CARD_NAME " soundcard."); | |
63 | module_param(enable, bool, 0644); | |
64 | MODULE_PARM_DESC(enable, "Enable " CARD_NAME " soundcard."); | |
65 | ||
66 | /* Use workqueue */ | |
198de43d AM |
67 | static struct workqueue_struct *aica_queue; |
68 | ||
69 | /* Simple platform device */ | |
70 | static struct platform_device *pd; | |
71 | static struct resource aica_memory_space[2] = { | |
72 | { | |
73 | .name = "AICA ARM CONTROL", | |
74 | .start = ARM_RESET_REGISTER, | |
75 | .flags = IORESOURCE_MEM, | |
76 | .end = ARM_RESET_REGISTER + 3, | |
77 | }, | |
78 | { | |
79 | .name = "AICA Sound RAM", | |
80 | .start = SPU_MEMORY_BASE, | |
81 | .flags = IORESOURCE_MEM, | |
82 | .end = SPU_MEMORY_BASE + 0x200000 - 1, | |
83 | }, | |
84 | }; | |
85 | ||
86 | /* SPU specific functions */ | |
87 | /* spu_write_wait - wait for G2-SH FIFO to clear */ | |
88 | static void spu_write_wait(void) | |
89 | { | |
90 | int time_count; | |
91 | time_count = 0; | |
92 | while (1) { | |
93 | if (!(readl(G2_FIFO) & 0x11)) | |
94 | break; | |
95 | /* To ensure hardware failure doesn't wedge kernel */ | |
96 | time_count++; | |
d20b9b20 TI |
97 | if (time_count > 0x10000) { |
98 | snd_printk | |
99 | ("WARNING: G2 FIFO appears to be blocked.\n"); | |
198de43d AM |
100 | break; |
101 | } | |
102 | } | |
103 | } | |
104 | ||
105 | /* spu_memset - write to memory in SPU address space */ | |
106 | static void spu_memset(u32 toi, u32 what, int length) | |
107 | { | |
108 | int i; | |
109 | snd_assert(length % 4 == 0, return); | |
110 | for (i = 0; i < length; i++) { | |
111 | if (!(i % 8)) | |
112 | spu_write_wait(); | |
113 | writel(what, toi + SPU_MEMORY_BASE); | |
114 | toi++; | |
115 | } | |
116 | } | |
117 | ||
118 | /* spu_memload - write to SPU address space */ | |
119 | static void spu_memload(u32 toi, void *from, int length) | |
120 | { | |
121 | u32 *froml = from; | |
122 | u32 __iomem *to = (u32 __iomem *) (SPU_MEMORY_BASE + toi); | |
123 | int i; | |
124 | u32 val; | |
125 | length = DIV_ROUND_UP(length, 4); | |
126 | spu_write_wait(); | |
127 | for (i = 0; i < length; i++) { | |
128 | if (!(i % 8)) | |
129 | spu_write_wait(); | |
130 | val = *froml; | |
131 | writel(val, to); | |
132 | froml++; | |
133 | to++; | |
134 | } | |
135 | } | |
136 | ||
137 | /* spu_disable - set spu registers to stop sound output */ | |
138 | static void spu_disable(void) | |
139 | { | |
140 | int i; | |
141 | u32 regval; | |
142 | spu_write_wait(); | |
143 | regval = readl(ARM_RESET_REGISTER); | |
144 | regval |= 1; | |
145 | spu_write_wait(); | |
146 | writel(regval, ARM_RESET_REGISTER); | |
147 | for (i = 0; i < 64; i++) { | |
148 | spu_write_wait(); | |
149 | regval = readl(SPU_REGISTER_BASE + (i * 0x80)); | |
150 | regval = (regval & ~0x4000) | 0x8000; | |
151 | spu_write_wait(); | |
152 | writel(regval, SPU_REGISTER_BASE + (i * 0x80)); | |
153 | } | |
154 | } | |
155 | ||
156 | /* spu_enable - set spu registers to enable sound output */ | |
157 | static void spu_enable(void) | |
158 | { | |
159 | u32 regval = readl(ARM_RESET_REGISTER); | |
160 | regval &= ~1; | |
161 | spu_write_wait(); | |
162 | writel(regval, ARM_RESET_REGISTER); | |
163 | } | |
164 | ||
165 | /* | |
166 | * Halt the sound processor, clear the memory, | |
167 | * load some default ARM7 code, and then restart ARM7 | |
168 | */ | |
169 | static void spu_reset(void) | |
170 | { | |
171 | spu_disable(); | |
172 | spu_memset(0, 0, 0x200000 / 4); | |
173 | /* Put ARM7 in endless loop */ | |
174 | ctrl_outl(0xea000002, SPU_MEMORY_BASE); | |
175 | spu_enable(); | |
176 | } | |
177 | ||
178 | /* aica_chn_start - write to spu to start playback */ | |
179 | static void aica_chn_start(void) | |
180 | { | |
181 | spu_write_wait(); | |
182 | writel(AICA_CMD_KICK | AICA_CMD_START, (u32 *) AICA_CONTROL_POINT); | |
183 | } | |
184 | ||
185 | /* aica_chn_halt - write to spu to halt playback */ | |
186 | static void aica_chn_halt(void) | |
187 | { | |
188 | spu_write_wait(); | |
189 | writel(AICA_CMD_KICK | AICA_CMD_STOP, (u32 *) AICA_CONTROL_POINT); | |
190 | } | |
191 | ||
192 | /* ALSA code below */ | |
193 | static struct snd_pcm_hardware snd_pcm_aica_playback_hw = { | |
194 | .info = (SNDRV_PCM_INFO_NONINTERLEAVED), | |
195 | .formats = | |
196 | (SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_S16_LE | | |
197 | SNDRV_PCM_FMTBIT_IMA_ADPCM), | |
198 | .rates = SNDRV_PCM_RATE_8000_48000, | |
199 | .rate_min = 8000, | |
200 | .rate_max = 48000, | |
201 | .channels_min = 1, | |
202 | .channels_max = 2, | |
203 | .buffer_bytes_max = AICA_BUFFER_SIZE, | |
204 | .period_bytes_min = AICA_PERIOD_SIZE, | |
205 | .period_bytes_max = AICA_PERIOD_SIZE, | |
206 | .periods_min = AICA_PERIOD_NUMBER, | |
207 | .periods_max = AICA_PERIOD_NUMBER, | |
208 | }; | |
209 | ||
210 | static int aica_dma_transfer(int channels, int buffer_size, | |
211 | struct snd_pcm_substream *substream) | |
212 | { | |
213 | int q, err, period_offset; | |
214 | struct snd_card_aica *dreamcastcard; | |
215 | struct snd_pcm_runtime *runtime; | |
216 | err = 0; | |
217 | dreamcastcard = substream->pcm->private_data; | |
218 | period_offset = dreamcastcard->clicks; | |
219 | period_offset %= (AICA_PERIOD_NUMBER / channels); | |
220 | runtime = substream->runtime; | |
221 | for (q = 0; q < channels; q++) { | |
222 | err = dma_xfer(AICA_DMA_CHANNEL, | |
d20b9b20 TI |
223 | (unsigned long) (runtime->dma_area + |
224 | (AICA_BUFFER_SIZE * q) / | |
225 | channels + | |
226 | AICA_PERIOD_SIZE * | |
227 | period_offset), | |
198de43d AM |
228 | AICA_CHANNEL0_OFFSET + q * CHANNEL_OFFSET + |
229 | AICA_PERIOD_SIZE * period_offset, | |
230 | buffer_size / channels, AICA_DMA_MODE); | |
231 | if (unlikely(err < 0)) | |
232 | break; | |
233 | dma_wait_for_completion(AICA_DMA_CHANNEL); | |
234 | } | |
235 | return err; | |
236 | } | |
237 | ||
238 | static void startup_aica(struct snd_card_aica *dreamcastcard) | |
239 | { | |
240 | spu_memload(AICA_CHANNEL0_CONTROL_OFFSET, | |
d20b9b20 | 241 | dreamcastcard->channel, sizeof(struct aica_channel)); |
198de43d AM |
242 | aica_chn_start(); |
243 | } | |
244 | ||
245 | static void run_spu_dma(struct work_struct *work) | |
246 | { | |
247 | int buffer_size; | |
198de43d AM |
248 | struct snd_pcm_runtime *runtime; |
249 | struct snd_card_aica *dreamcastcard; | |
d20b9b20 TI |
250 | dreamcastcard = |
251 | container_of(work, struct snd_card_aica, spu_dma_work); | |
252 | runtime = dreamcastcard->substream->runtime; | |
198de43d | 253 | if (unlikely(dreamcastcard->dma_check == 0)) { |
d20b9b20 TI |
254 | buffer_size = |
255 | frames_to_bytes(runtime, runtime->buffer_size); | |
198de43d AM |
256 | if (runtime->channels > 1) |
257 | dreamcastcard->channel->flags |= 0x01; | |
d20b9b20 TI |
258 | aica_dma_transfer(runtime->channels, buffer_size, |
259 | dreamcastcard->substream); | |
198de43d AM |
260 | startup_aica(dreamcastcard); |
261 | dreamcastcard->clicks = | |
262 | buffer_size / (AICA_PERIOD_SIZE * runtime->channels); | |
263 | return; | |
264 | } else { | |
265 | aica_dma_transfer(runtime->channels, | |
266 | AICA_PERIOD_SIZE * runtime->channels, | |
d20b9b20 | 267 | dreamcastcard->substream); |
198de43d AM |
268 | snd_pcm_period_elapsed(dreamcastcard->substream); |
269 | dreamcastcard->clicks++; | |
270 | if (unlikely(dreamcastcard->clicks >= AICA_PERIOD_NUMBER)) | |
198de43d | 271 | dreamcastcard->clicks %= AICA_PERIOD_NUMBER; |
198de43d AM |
272 | mod_timer(&dreamcastcard->timer, jiffies + 1); |
273 | } | |
274 | } | |
275 | ||
276 | static void aica_period_elapsed(unsigned long timer_var) | |
277 | { | |
278 | /*timer function - so cannot sleep */ | |
279 | int play_period; | |
280 | struct snd_pcm_runtime *runtime; | |
281 | struct snd_pcm_substream *substream; | |
282 | struct snd_card_aica *dreamcastcard; | |
d20b9b20 | 283 | substream = (struct snd_pcm_substream *) timer_var; |
198de43d AM |
284 | runtime = substream->runtime; |
285 | dreamcastcard = substream->pcm->private_data; | |
286 | /* Have we played out an additional period? */ | |
287 | play_period = | |
288 | frames_to_bytes(runtime, | |
289 | readl | |
290 | (AICA_CONTROL_CHANNEL_SAMPLE_NUMBER)) / | |
291 | AICA_PERIOD_SIZE; | |
292 | if (play_period == dreamcastcard->current_period) { | |
293 | /* reschedule the timer */ | |
294 | mod_timer(&(dreamcastcard->timer), jiffies + 1); | |
295 | return; | |
296 | } | |
297 | if (runtime->channels > 1) | |
298 | dreamcastcard->current_period = play_period; | |
299 | if (unlikely(dreamcastcard->dma_check == 0)) | |
300 | dreamcastcard->dma_check = 1; | |
d20b9b20 | 301 | queue_work(aica_queue, &(dreamcastcard->spu_dma_work)); |
198de43d AM |
302 | } |
303 | ||
304 | static void spu_begin_dma(struct snd_pcm_substream *substream) | |
305 | { | |
198de43d AM |
306 | struct snd_card_aica *dreamcastcard; |
307 | struct snd_pcm_runtime *runtime; | |
308 | runtime = substream->runtime; | |
309 | dreamcastcard = substream->pcm->private_data; | |
d20b9b20 TI |
310 | /*get the queue to do the work */ |
311 | queue_work(aica_queue, &(dreamcastcard->spu_dma_work)); | |
198de43d AM |
312 | /* Timer may already be running */ |
313 | if (unlikely(dreamcastcard->timer.data)) { | |
314 | mod_timer(&dreamcastcard->timer, jiffies + 4); | |
315 | return; | |
316 | } | |
317 | init_timer(&(dreamcastcard->timer)); | |
d20b9b20 | 318 | dreamcastcard->timer.data = (unsigned long) substream; |
198de43d AM |
319 | dreamcastcard->timer.function = aica_period_elapsed; |
320 | dreamcastcard->timer.expires = jiffies + 4; | |
321 | add_timer(&(dreamcastcard->timer)); | |
322 | } | |
323 | ||
324 | static int snd_aicapcm_pcm_open(struct snd_pcm_substream | |
325 | *substream) | |
326 | { | |
327 | struct snd_pcm_runtime *runtime; | |
328 | struct aica_channel *channel; | |
329 | struct snd_card_aica *dreamcastcard; | |
330 | if (!enable) | |
331 | return -ENOENT; | |
332 | dreamcastcard = substream->pcm->private_data; | |
333 | channel = kmalloc(sizeof(struct aica_channel), GFP_KERNEL); | |
334 | if (!channel) | |
335 | return -ENOMEM; | |
336 | /* set defaults for channel */ | |
337 | channel->sfmt = SM_8BIT; | |
338 | channel->cmd = AICA_CMD_START; | |
339 | channel->vol = dreamcastcard->master_volume; | |
340 | channel->pan = 0x80; | |
341 | channel->pos = 0; | |
342 | channel->flags = 0; /* default to mono */ | |
343 | dreamcastcard->channel = channel; | |
344 | runtime = substream->runtime; | |
345 | runtime->hw = snd_pcm_aica_playback_hw; | |
346 | spu_enable(); | |
347 | dreamcastcard->clicks = 0; | |
348 | dreamcastcard->current_period = 0; | |
349 | dreamcastcard->dma_check = 0; | |
350 | return 0; | |
351 | } | |
352 | ||
353 | static int snd_aicapcm_pcm_close(struct snd_pcm_substream | |
354 | *substream) | |
355 | { | |
356 | struct snd_card_aica *dreamcastcard = substream->pcm->private_data; | |
d20b9b20 TI |
357 | flush_workqueue(aica_queue); |
358 | if (dreamcastcard->timer.data) | |
359 | del_timer(&dreamcastcard->timer); | |
198de43d AM |
360 | kfree(dreamcastcard->channel); |
361 | spu_disable(); | |
362 | return 0; | |
363 | } | |
364 | ||
365 | static int snd_aicapcm_pcm_hw_free(struct snd_pcm_substream | |
366 | *substream) | |
367 | { | |
368 | /* Free the DMA buffer */ | |
369 | return snd_pcm_lib_free_pages(substream); | |
370 | } | |
371 | ||
372 | static int snd_aicapcm_pcm_hw_params(struct snd_pcm_substream | |
373 | *substream, struct snd_pcm_hw_params | |
374 | *hw_params) | |
375 | { | |
376 | /* Allocate a DMA buffer using ALSA built-ins */ | |
377 | return | |
d20b9b20 TI |
378 | snd_pcm_lib_malloc_pages(substream, |
379 | params_buffer_bytes(hw_params)); | |
198de43d AM |
380 | } |
381 | ||
382 | static int snd_aicapcm_pcm_prepare(struct snd_pcm_substream | |
383 | *substream) | |
384 | { | |
385 | struct snd_card_aica *dreamcastcard = substream->pcm->private_data; | |
386 | if ((substream->runtime)->format == SNDRV_PCM_FORMAT_S16_LE) | |
387 | dreamcastcard->channel->sfmt = SM_16BIT; | |
388 | dreamcastcard->channel->freq = substream->runtime->rate; | |
389 | dreamcastcard->substream = substream; | |
390 | return 0; | |
391 | } | |
392 | ||
393 | static int snd_aicapcm_pcm_trigger(struct snd_pcm_substream | |
394 | *substream, int cmd) | |
395 | { | |
198de43d AM |
396 | switch (cmd) { |
397 | case SNDRV_PCM_TRIGGER_START: | |
398 | spu_begin_dma(substream); | |
399 | break; | |
400 | case SNDRV_PCM_TRIGGER_STOP: | |
198de43d AM |
401 | aica_chn_halt(); |
402 | break; | |
403 | default: | |
404 | return -EINVAL; | |
405 | } | |
406 | return 0; | |
407 | } | |
408 | ||
409 | static unsigned long snd_aicapcm_pcm_pointer(struct snd_pcm_substream | |
410 | *substream) | |
411 | { | |
412 | return readl(AICA_CONTROL_CHANNEL_SAMPLE_NUMBER); | |
413 | } | |
414 | ||
415 | static struct snd_pcm_ops snd_aicapcm_playback_ops = { | |
416 | .open = snd_aicapcm_pcm_open, | |
417 | .close = snd_aicapcm_pcm_close, | |
418 | .ioctl = snd_pcm_lib_ioctl, | |
419 | .hw_params = snd_aicapcm_pcm_hw_params, | |
420 | .hw_free = snd_aicapcm_pcm_hw_free, | |
421 | .prepare = snd_aicapcm_pcm_prepare, | |
422 | .trigger = snd_aicapcm_pcm_trigger, | |
423 | .pointer = snd_aicapcm_pcm_pointer, | |
424 | }; | |
425 | ||
426 | /* TO DO: set up to handle more than one pcm instance */ | |
427 | static int __init snd_aicapcmchip(struct snd_card_aica | |
428 | *dreamcastcard, int pcm_index) | |
429 | { | |
430 | struct snd_pcm *pcm; | |
431 | int err; | |
432 | /* AICA has no capture ability */ | |
433 | err = | |
d20b9b20 TI |
434 | snd_pcm_new(dreamcastcard->card, "AICA PCM", pcm_index, 1, 0, |
435 | &pcm); | |
198de43d AM |
436 | if (unlikely(err < 0)) |
437 | return err; | |
438 | pcm->private_data = dreamcastcard; | |
439 | strcpy(pcm->name, "AICA PCM"); | |
440 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, | |
441 | &snd_aicapcm_playback_ops); | |
442 | /* Allocate the DMA buffers */ | |
443 | err = | |
444 | snd_pcm_lib_preallocate_pages_for_all(pcm, | |
445 | SNDRV_DMA_TYPE_CONTINUOUS, | |
446 | snd_dma_continuous_data | |
447 | (GFP_KERNEL), | |
448 | AICA_BUFFER_SIZE, | |
449 | AICA_BUFFER_SIZE); | |
450 | return err; | |
451 | } | |
452 | ||
453 | /* Mixer controls */ | |
a5ce8890 | 454 | #define aica_pcmswitch_info snd_ctl_boolean_mono_info |
198de43d AM |
455 | |
456 | static int aica_pcmswitch_get(struct snd_kcontrol *kcontrol, | |
457 | struct snd_ctl_elem_value *ucontrol) | |
458 | { | |
459 | ucontrol->value.integer.value[0] = 1; /* TO DO: Fix me */ | |
460 | return 0; | |
461 | } | |
462 | ||
463 | static int aica_pcmswitch_put(struct snd_kcontrol *kcontrol, | |
464 | struct snd_ctl_elem_value *ucontrol) | |
465 | { | |
466 | if (ucontrol->value.integer.value[0] == 1) | |
467 | return 0; /* TO DO: Fix me */ | |
468 | else | |
469 | aica_chn_halt(); | |
470 | return 0; | |
471 | } | |
472 | ||
473 | static int aica_pcmvolume_info(struct snd_kcontrol *kcontrol, | |
474 | struct snd_ctl_elem_info *uinfo) | |
475 | { | |
476 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; | |
477 | uinfo->count = 1; | |
478 | uinfo->value.integer.min = 0; | |
479 | uinfo->value.integer.max = 0xFF; | |
480 | return 0; | |
481 | } | |
482 | ||
483 | static int aica_pcmvolume_get(struct snd_kcontrol *kcontrol, | |
484 | struct snd_ctl_elem_value *ucontrol) | |
485 | { | |
486 | struct snd_card_aica *dreamcastcard; | |
487 | dreamcastcard = kcontrol->private_data; | |
488 | if (unlikely(!dreamcastcard->channel)) | |
489 | return -ETXTBSY; /* we've not yet been set up */ | |
490 | ucontrol->value.integer.value[0] = dreamcastcard->channel->vol; | |
491 | return 0; | |
492 | } | |
493 | ||
494 | static int aica_pcmvolume_put(struct snd_kcontrol *kcontrol, | |
495 | struct snd_ctl_elem_value *ucontrol) | |
496 | { | |
497 | struct snd_card_aica *dreamcastcard; | |
498 | dreamcastcard = kcontrol->private_data; | |
499 | if (unlikely(!dreamcastcard->channel)) | |
500 | return -ETXTBSY; | |
501 | if (unlikely(dreamcastcard->channel->vol == | |
502 | ucontrol->value.integer.value[0])) | |
503 | return 0; | |
504 | dreamcastcard->channel->vol = ucontrol->value.integer.value[0]; | |
505 | dreamcastcard->master_volume = ucontrol->value.integer.value[0]; | |
506 | spu_memload(AICA_CHANNEL0_CONTROL_OFFSET, | |
d20b9b20 | 507 | dreamcastcard->channel, sizeof(struct aica_channel)); |
198de43d AM |
508 | return 1; |
509 | } | |
510 | ||
511 | static struct snd_kcontrol_new snd_aica_pcmswitch_control __devinitdata = { | |
512 | .iface = SNDRV_CTL_ELEM_IFACE_MIXER, | |
513 | .name = "PCM Playback Switch", | |
514 | .index = 0, | |
515 | .info = aica_pcmswitch_info, | |
516 | .get = aica_pcmswitch_get, | |
517 | .put = aica_pcmswitch_put | |
518 | }; | |
519 | ||
520 | static struct snd_kcontrol_new snd_aica_pcmvolume_control __devinitdata = { | |
521 | .iface = SNDRV_CTL_ELEM_IFACE_MIXER, | |
522 | .name = "PCM Playback Volume", | |
523 | .index = 0, | |
524 | .info = aica_pcmvolume_info, | |
525 | .get = aica_pcmvolume_get, | |
526 | .put = aica_pcmvolume_put | |
527 | }; | |
528 | ||
529 | static int load_aica_firmware(void) | |
530 | { | |
531 | int err; | |
532 | const struct firmware *fw_entry; | |
533 | spu_reset(); | |
534 | err = request_firmware(&fw_entry, "aica_firmware.bin", &pd->dev); | |
535 | if (unlikely(err)) | |
536 | return err; | |
537 | /* write firware into memory */ | |
538 | spu_disable(); | |
539 | spu_memload(0, fw_entry->data, fw_entry->size); | |
540 | spu_enable(); | |
541 | release_firmware(fw_entry); | |
542 | return err; | |
543 | } | |
544 | ||
545 | static int __devinit add_aicamixer_controls(struct snd_card_aica | |
546 | *dreamcastcard) | |
547 | { | |
548 | int err; | |
549 | err = snd_ctl_add | |
550 | (dreamcastcard->card, | |
551 | snd_ctl_new1(&snd_aica_pcmvolume_control, dreamcastcard)); | |
552 | if (unlikely(err < 0)) | |
553 | return err; | |
554 | err = snd_ctl_add | |
555 | (dreamcastcard->card, | |
556 | snd_ctl_new1(&snd_aica_pcmswitch_control, dreamcastcard)); | |
557 | if (unlikely(err < 0)) | |
558 | return err; | |
559 | return 0; | |
560 | } | |
561 | ||
562 | static int snd_aica_remove(struct platform_device *devptr) | |
563 | { | |
564 | struct snd_card_aica *dreamcastcard; | |
565 | dreamcastcard = platform_get_drvdata(devptr); | |
566 | if (unlikely(!dreamcastcard)) | |
567 | return -ENODEV; | |
568 | snd_card_free(dreamcastcard->card); | |
569 | kfree(dreamcastcard); | |
570 | platform_set_drvdata(devptr, NULL); | |
571 | return 0; | |
572 | } | |
573 | ||
574 | static int __init snd_aica_probe(struct platform_device *devptr) | |
575 | { | |
576 | int err; | |
577 | struct snd_card_aica *dreamcastcard; | |
578 | dreamcastcard = kmalloc(sizeof(struct snd_card_aica), GFP_KERNEL); | |
579 | if (unlikely(!dreamcastcard)) | |
580 | return -ENOMEM; | |
581 | dreamcastcard->card = | |
582 | snd_card_new(index, SND_AICA_DRIVER, THIS_MODULE, 0); | |
583 | if (unlikely(!dreamcastcard->card)) { | |
584 | kfree(dreamcastcard); | |
585 | return -ENODEV; | |
586 | } | |
587 | strcpy(dreamcastcard->card->driver, "snd_aica"); | |
588 | strcpy(dreamcastcard->card->shortname, SND_AICA_DRIVER); | |
589 | strcpy(dreamcastcard->card->longname, | |
590 | "Yamaha AICA Super Intelligent Sound Processor for SEGA Dreamcast"); | |
d20b9b20 TI |
591 | /* Prepare to use the queue */ |
592 | INIT_WORK(&(dreamcastcard->spu_dma_work), run_spu_dma); | |
198de43d AM |
593 | /* Load the PCM 'chip' */ |
594 | err = snd_aicapcmchip(dreamcastcard, 0); | |
595 | if (unlikely(err < 0)) | |
596 | goto freedreamcast; | |
597 | snd_card_set_dev(dreamcastcard->card, &devptr->dev); | |
598 | dreamcastcard->timer.data = 0; | |
599 | dreamcastcard->channel = NULL; | |
600 | /* Add basic controls */ | |
601 | err = add_aicamixer_controls(dreamcastcard); | |
602 | if (unlikely(err < 0)) | |
603 | goto freedreamcast; | |
604 | /* Register the card with ALSA subsystem */ | |
605 | err = snd_card_register(dreamcastcard->card); | |
606 | if (unlikely(err < 0)) | |
607 | goto freedreamcast; | |
608 | platform_set_drvdata(devptr, dreamcastcard); | |
609 | aica_queue = create_workqueue(CARD_NAME); | |
610 | if (unlikely(!aica_queue)) | |
611 | goto freedreamcast; | |
612 | snd_printk | |
613 | ("ALSA Driver for Yamaha AICA Super Intelligent Sound Processor\n"); | |
614 | return 0; | |
615 | freedreamcast: | |
616 | snd_card_free(dreamcastcard->card); | |
617 | kfree(dreamcastcard); | |
618 | return err; | |
619 | } | |
620 | ||
621 | static struct platform_driver snd_aica_driver = { | |
622 | .probe = snd_aica_probe, | |
623 | .remove = snd_aica_remove, | |
624 | .driver = { | |
625 | .name = SND_AICA_DRIVER}, | |
626 | }; | |
627 | ||
628 | static int __init aica_init(void) | |
629 | { | |
630 | int err; | |
631 | err = platform_driver_register(&snd_aica_driver); | |
632 | if (unlikely(err < 0)) | |
633 | return err; | |
634 | pd = platform_device_register_simple(SND_AICA_DRIVER, -1, | |
635 | aica_memory_space, 2); | |
636 | if (unlikely(IS_ERR(pd))) { | |
637 | platform_driver_unregister(&snd_aica_driver); | |
638 | return PTR_ERR(pd); | |
639 | } | |
640 | /* Load the firmware */ | |
641 | return load_aica_firmware(); | |
642 | } | |
643 | ||
644 | static void __exit aica_exit(void) | |
645 | { | |
d20b9b20 TI |
646 | /* Destroy the aica kernel thread * |
647 | * being extra cautious to check if it exists*/ | |
648 | if (likely(aica_queue)) | |
649 | destroy_workqueue(aica_queue); | |
198de43d AM |
650 | platform_device_unregister(pd); |
651 | platform_driver_unregister(&snd_aica_driver); | |
652 | /* Kill any sound still playing and reset ARM7 to safe state */ | |
653 | spu_reset(); | |
654 | } | |
655 | ||
656 | module_init(aica_init); | |
657 | module_exit(aica_exit); |