Commit | Line | Data |
---|---|---|
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> | |
198de43d AM |
38 | #include <sound/core.h> |
39 | #include <sound/control.h> | |
40 | #include <sound/pcm.h> | |
41 | #include <sound/initval.h> | |
42 | #include <sound/info.h> | |
43 | #include <asm/io.h> | |
44 | #include <asm/dma.h> | |
f15cbe6f | 45 | #include <mach/sysasic.h> |
198de43d AM |
46 | #include "aica.h" |
47 | ||
48 | MODULE_AUTHOR("Adrian McMenamin <adrian@mcmen.demon.co.uk>"); | |
49 | MODULE_DESCRIPTION("Dreamcast AICA sound (pcm) driver"); | |
50 | MODULE_LICENSE("GPL"); | |
51 | MODULE_SUPPORTED_DEVICE("{{Yamaha/SEGA, AICA}}"); | |
52 | ||
53 | /* module parameters */ | |
54 | #define CARD_NAME "AICA" | |
55 | static int index = -1; | |
56 | static char *id; | |
57 | static int enable = 1; | |
58 | module_param(index, int, 0444); | |
59 | MODULE_PARM_DESC(index, "Index value for " CARD_NAME " soundcard."); | |
60 | module_param(id, charp, 0444); | |
61 | MODULE_PARM_DESC(id, "ID string for " CARD_NAME " soundcard."); | |
62 | module_param(enable, bool, 0644); | |
63 | MODULE_PARM_DESC(enable, "Enable " CARD_NAME " soundcard."); | |
64 | ||
65 | /* Use workqueue */ | |
198de43d AM |
66 | static struct workqueue_struct *aica_queue; |
67 | ||
68 | /* Simple platform device */ | |
69 | static struct platform_device *pd; | |
70 | static struct resource aica_memory_space[2] = { | |
71 | { | |
72 | .name = "AICA ARM CONTROL", | |
73 | .start = ARM_RESET_REGISTER, | |
74 | .flags = IORESOURCE_MEM, | |
75 | .end = ARM_RESET_REGISTER + 3, | |
76 | }, | |
77 | { | |
78 | .name = "AICA Sound RAM", | |
79 | .start = SPU_MEMORY_BASE, | |
80 | .flags = IORESOURCE_MEM, | |
81 | .end = SPU_MEMORY_BASE + 0x200000 - 1, | |
82 | }, | |
83 | }; | |
84 | ||
85 | /* SPU specific functions */ | |
86 | /* spu_write_wait - wait for G2-SH FIFO to clear */ | |
87 | static void spu_write_wait(void) | |
88 | { | |
89 | int time_count; | |
90 | time_count = 0; | |
91 | while (1) { | |
92 | if (!(readl(G2_FIFO) & 0x11)) | |
93 | break; | |
94 | /* To ensure hardware failure doesn't wedge kernel */ | |
95 | time_count++; | |
d20b9b20 TI |
96 | if (time_count > 0x10000) { |
97 | snd_printk | |
98 | ("WARNING: G2 FIFO appears to be blocked.\n"); | |
198de43d AM |
99 | break; |
100 | } | |
101 | } | |
102 | } | |
103 | ||
104 | /* spu_memset - write to memory in SPU address space */ | |
105 | static void spu_memset(u32 toi, u32 what, int length) | |
106 | { | |
107 | int i; | |
44e0b682 | 108 | unsigned long flags; |
198de43d AM |
109 | snd_assert(length % 4 == 0, return); |
110 | for (i = 0; i < length; i++) { | |
111 | if (!(i % 8)) | |
112 | spu_write_wait(); | |
44e0b682 | 113 | local_irq_save(flags); |
198de43d | 114 | writel(what, toi + SPU_MEMORY_BASE); |
44e0b682 | 115 | local_irq_restore(flags); |
198de43d AM |
116 | toi++; |
117 | } | |
118 | } | |
119 | ||
120 | /* spu_memload - write to SPU address space */ | |
121 | static void spu_memload(u32 toi, void *from, int length) | |
122 | { | |
44e0b682 | 123 | unsigned long flags; |
198de43d AM |
124 | u32 *froml = from; |
125 | u32 __iomem *to = (u32 __iomem *) (SPU_MEMORY_BASE + toi); | |
126 | int i; | |
127 | u32 val; | |
128 | length = DIV_ROUND_UP(length, 4); | |
129 | spu_write_wait(); | |
130 | for (i = 0; i < length; i++) { | |
131 | if (!(i % 8)) | |
132 | spu_write_wait(); | |
133 | val = *froml; | |
44e0b682 | 134 | local_irq_save(flags); |
198de43d | 135 | writel(val, to); |
44e0b682 | 136 | local_irq_restore(flags); |
198de43d AM |
137 | froml++; |
138 | to++; | |
139 | } | |
140 | } | |
141 | ||
142 | /* spu_disable - set spu registers to stop sound output */ | |
143 | static void spu_disable(void) | |
144 | { | |
145 | int i; | |
44e0b682 | 146 | unsigned long flags; |
198de43d AM |
147 | u32 regval; |
148 | spu_write_wait(); | |
149 | regval = readl(ARM_RESET_REGISTER); | |
150 | regval |= 1; | |
151 | spu_write_wait(); | |
44e0b682 | 152 | local_irq_save(flags); |
198de43d | 153 | writel(regval, ARM_RESET_REGISTER); |
44e0b682 | 154 | local_irq_restore(flags); |
198de43d AM |
155 | for (i = 0; i < 64; i++) { |
156 | spu_write_wait(); | |
157 | regval = readl(SPU_REGISTER_BASE + (i * 0x80)); | |
158 | regval = (regval & ~0x4000) | 0x8000; | |
159 | spu_write_wait(); | |
44e0b682 | 160 | local_irq_save(flags); |
198de43d | 161 | writel(regval, SPU_REGISTER_BASE + (i * 0x80)); |
44e0b682 | 162 | local_irq_restore(flags); |
198de43d AM |
163 | } |
164 | } | |
165 | ||
166 | /* spu_enable - set spu registers to enable sound output */ | |
167 | static void spu_enable(void) | |
168 | { | |
44e0b682 | 169 | unsigned long flags; |
198de43d AM |
170 | u32 regval = readl(ARM_RESET_REGISTER); |
171 | regval &= ~1; | |
172 | spu_write_wait(); | |
44e0b682 | 173 | local_irq_save(flags); |
198de43d | 174 | writel(regval, ARM_RESET_REGISTER); |
44e0b682 | 175 | local_irq_restore(flags); |
198de43d AM |
176 | } |
177 | ||
178 | /* | |
179 | * Halt the sound processor, clear the memory, | |
180 | * load some default ARM7 code, and then restart ARM7 | |
181 | */ | |
182 | static void spu_reset(void) | |
183 | { | |
44e0b682 | 184 | unsigned long flags; |
198de43d AM |
185 | spu_disable(); |
186 | spu_memset(0, 0, 0x200000 / 4); | |
187 | /* Put ARM7 in endless loop */ | |
44e0b682 | 188 | local_irq_save(flags); |
198de43d | 189 | ctrl_outl(0xea000002, SPU_MEMORY_BASE); |
44e0b682 | 190 | local_irq_restore(flags); |
198de43d AM |
191 | spu_enable(); |
192 | } | |
193 | ||
194 | /* aica_chn_start - write to spu to start playback */ | |
195 | static void aica_chn_start(void) | |
196 | { | |
44e0b682 | 197 | unsigned long flags; |
198de43d | 198 | spu_write_wait(); |
44e0b682 | 199 | local_irq_save(flags); |
198de43d | 200 | writel(AICA_CMD_KICK | AICA_CMD_START, (u32 *) AICA_CONTROL_POINT); |
44e0b682 | 201 | local_irq_restore(flags); |
198de43d AM |
202 | } |
203 | ||
204 | /* aica_chn_halt - write to spu to halt playback */ | |
205 | static void aica_chn_halt(void) | |
206 | { | |
44e0b682 | 207 | unsigned long flags; |
198de43d | 208 | spu_write_wait(); |
44e0b682 | 209 | local_irq_save(flags); |
198de43d | 210 | writel(AICA_CMD_KICK | AICA_CMD_STOP, (u32 *) AICA_CONTROL_POINT); |
44e0b682 | 211 | local_irq_restore(flags); |
198de43d AM |
212 | } |
213 | ||
214 | /* ALSA code below */ | |
215 | static struct snd_pcm_hardware snd_pcm_aica_playback_hw = { | |
216 | .info = (SNDRV_PCM_INFO_NONINTERLEAVED), | |
217 | .formats = | |
218 | (SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_S16_LE | | |
219 | SNDRV_PCM_FMTBIT_IMA_ADPCM), | |
220 | .rates = SNDRV_PCM_RATE_8000_48000, | |
221 | .rate_min = 8000, | |
222 | .rate_max = 48000, | |
223 | .channels_min = 1, | |
224 | .channels_max = 2, | |
225 | .buffer_bytes_max = AICA_BUFFER_SIZE, | |
226 | .period_bytes_min = AICA_PERIOD_SIZE, | |
227 | .period_bytes_max = AICA_PERIOD_SIZE, | |
228 | .periods_min = AICA_PERIOD_NUMBER, | |
229 | .periods_max = AICA_PERIOD_NUMBER, | |
230 | }; | |
231 | ||
232 | static int aica_dma_transfer(int channels, int buffer_size, | |
233 | struct snd_pcm_substream *substream) | |
234 | { | |
235 | int q, err, period_offset; | |
236 | struct snd_card_aica *dreamcastcard; | |
237 | struct snd_pcm_runtime *runtime; | |
44e0b682 | 238 | unsigned long flags; |
ceac4bf3 | 239 | err = 0; |
198de43d AM |
240 | dreamcastcard = substream->pcm->private_data; |
241 | period_offset = dreamcastcard->clicks; | |
242 | period_offset %= (AICA_PERIOD_NUMBER / channels); | |
243 | runtime = substream->runtime; | |
244 | for (q = 0; q < channels; q++) { | |
44e0b682 | 245 | local_irq_save(flags); |
198de43d | 246 | err = dma_xfer(AICA_DMA_CHANNEL, |
d20b9b20 TI |
247 | (unsigned long) (runtime->dma_area + |
248 | (AICA_BUFFER_SIZE * q) / | |
249 | channels + | |
250 | AICA_PERIOD_SIZE * | |
251 | period_offset), | |
198de43d AM |
252 | AICA_CHANNEL0_OFFSET + q * CHANNEL_OFFSET + |
253 | AICA_PERIOD_SIZE * period_offset, | |
254 | buffer_size / channels, AICA_DMA_MODE); | |
44e0b682 AM |
255 | if (unlikely(err < 0)) { |
256 | local_irq_restore(flags); | |
198de43d | 257 | break; |
44e0b682 | 258 | } |
198de43d | 259 | dma_wait_for_completion(AICA_DMA_CHANNEL); |
44e0b682 | 260 | local_irq_restore(flags); |
198de43d AM |
261 | } |
262 | return err; | |
263 | } | |
264 | ||
265 | static void startup_aica(struct snd_card_aica *dreamcastcard) | |
266 | { | |
267 | spu_memload(AICA_CHANNEL0_CONTROL_OFFSET, | |
d20b9b20 | 268 | dreamcastcard->channel, sizeof(struct aica_channel)); |
198de43d AM |
269 | aica_chn_start(); |
270 | } | |
271 | ||
272 | static void run_spu_dma(struct work_struct *work) | |
273 | { | |
274 | int buffer_size; | |
198de43d AM |
275 | struct snd_pcm_runtime *runtime; |
276 | struct snd_card_aica *dreamcastcard; | |
d20b9b20 TI |
277 | dreamcastcard = |
278 | container_of(work, struct snd_card_aica, spu_dma_work); | |
279 | runtime = dreamcastcard->substream->runtime; | |
198de43d | 280 | if (unlikely(dreamcastcard->dma_check == 0)) { |
d20b9b20 TI |
281 | buffer_size = |
282 | frames_to_bytes(runtime, runtime->buffer_size); | |
198de43d AM |
283 | if (runtime->channels > 1) |
284 | dreamcastcard->channel->flags |= 0x01; | |
d20b9b20 TI |
285 | aica_dma_transfer(runtime->channels, buffer_size, |
286 | dreamcastcard->substream); | |
198de43d AM |
287 | startup_aica(dreamcastcard); |
288 | dreamcastcard->clicks = | |
289 | buffer_size / (AICA_PERIOD_SIZE * runtime->channels); | |
290 | return; | |
291 | } else { | |
292 | aica_dma_transfer(runtime->channels, | |
293 | AICA_PERIOD_SIZE * runtime->channels, | |
d20b9b20 | 294 | dreamcastcard->substream); |
198de43d AM |
295 | snd_pcm_period_elapsed(dreamcastcard->substream); |
296 | dreamcastcard->clicks++; | |
297 | if (unlikely(dreamcastcard->clicks >= AICA_PERIOD_NUMBER)) | |
198de43d | 298 | dreamcastcard->clicks %= AICA_PERIOD_NUMBER; |
198de43d AM |
299 | mod_timer(&dreamcastcard->timer, jiffies + 1); |
300 | } | |
301 | } | |
302 | ||
303 | static void aica_period_elapsed(unsigned long timer_var) | |
304 | { | |
305 | /*timer function - so cannot sleep */ | |
306 | int play_period; | |
307 | struct snd_pcm_runtime *runtime; | |
308 | struct snd_pcm_substream *substream; | |
309 | struct snd_card_aica *dreamcastcard; | |
d20b9b20 | 310 | substream = (struct snd_pcm_substream *) timer_var; |
198de43d AM |
311 | runtime = substream->runtime; |
312 | dreamcastcard = substream->pcm->private_data; | |
313 | /* Have we played out an additional period? */ | |
314 | play_period = | |
315 | frames_to_bytes(runtime, | |
316 | readl | |
317 | (AICA_CONTROL_CHANNEL_SAMPLE_NUMBER)) / | |
318 | AICA_PERIOD_SIZE; | |
319 | if (play_period == dreamcastcard->current_period) { | |
320 | /* reschedule the timer */ | |
321 | mod_timer(&(dreamcastcard->timer), jiffies + 1); | |
322 | return; | |
323 | } | |
324 | if (runtime->channels > 1) | |
325 | dreamcastcard->current_period = play_period; | |
326 | if (unlikely(dreamcastcard->dma_check == 0)) | |
327 | dreamcastcard->dma_check = 1; | |
d20b9b20 | 328 | queue_work(aica_queue, &(dreamcastcard->spu_dma_work)); |
198de43d AM |
329 | } |
330 | ||
331 | static void spu_begin_dma(struct snd_pcm_substream *substream) | |
332 | { | |
198de43d AM |
333 | struct snd_card_aica *dreamcastcard; |
334 | struct snd_pcm_runtime *runtime; | |
335 | runtime = substream->runtime; | |
336 | dreamcastcard = substream->pcm->private_data; | |
d20b9b20 TI |
337 | /*get the queue to do the work */ |
338 | queue_work(aica_queue, &(dreamcastcard->spu_dma_work)); | |
198de43d AM |
339 | /* Timer may already be running */ |
340 | if (unlikely(dreamcastcard->timer.data)) { | |
341 | mod_timer(&dreamcastcard->timer, jiffies + 4); | |
342 | return; | |
343 | } | |
344 | init_timer(&(dreamcastcard->timer)); | |
d20b9b20 | 345 | dreamcastcard->timer.data = (unsigned long) substream; |
198de43d AM |
346 | dreamcastcard->timer.function = aica_period_elapsed; |
347 | dreamcastcard->timer.expires = jiffies + 4; | |
348 | add_timer(&(dreamcastcard->timer)); | |
349 | } | |
350 | ||
351 | static int snd_aicapcm_pcm_open(struct snd_pcm_substream | |
352 | *substream) | |
353 | { | |
354 | struct snd_pcm_runtime *runtime; | |
355 | struct aica_channel *channel; | |
356 | struct snd_card_aica *dreamcastcard; | |
357 | if (!enable) | |
358 | return -ENOENT; | |
359 | dreamcastcard = substream->pcm->private_data; | |
360 | channel = kmalloc(sizeof(struct aica_channel), GFP_KERNEL); | |
361 | if (!channel) | |
362 | return -ENOMEM; | |
363 | /* set defaults for channel */ | |
364 | channel->sfmt = SM_8BIT; | |
365 | channel->cmd = AICA_CMD_START; | |
366 | channel->vol = dreamcastcard->master_volume; | |
367 | channel->pan = 0x80; | |
368 | channel->pos = 0; | |
369 | channel->flags = 0; /* default to mono */ | |
370 | dreamcastcard->channel = channel; | |
371 | runtime = substream->runtime; | |
372 | runtime->hw = snd_pcm_aica_playback_hw; | |
373 | spu_enable(); | |
374 | dreamcastcard->clicks = 0; | |
375 | dreamcastcard->current_period = 0; | |
376 | dreamcastcard->dma_check = 0; | |
377 | return 0; | |
378 | } | |
379 | ||
380 | static int snd_aicapcm_pcm_close(struct snd_pcm_substream | |
381 | *substream) | |
382 | { | |
383 | struct snd_card_aica *dreamcastcard = substream->pcm->private_data; | |
d20b9b20 TI |
384 | flush_workqueue(aica_queue); |
385 | if (dreamcastcard->timer.data) | |
386 | del_timer(&dreamcastcard->timer); | |
198de43d AM |
387 | kfree(dreamcastcard->channel); |
388 | spu_disable(); | |
389 | return 0; | |
390 | } | |
391 | ||
392 | static int snd_aicapcm_pcm_hw_free(struct snd_pcm_substream | |
393 | *substream) | |
394 | { | |
395 | /* Free the DMA buffer */ | |
396 | return snd_pcm_lib_free_pages(substream); | |
397 | } | |
398 | ||
399 | static int snd_aicapcm_pcm_hw_params(struct snd_pcm_substream | |
400 | *substream, struct snd_pcm_hw_params | |
401 | *hw_params) | |
402 | { | |
403 | /* Allocate a DMA buffer using ALSA built-ins */ | |
404 | return | |
d20b9b20 TI |
405 | snd_pcm_lib_malloc_pages(substream, |
406 | params_buffer_bytes(hw_params)); | |
198de43d AM |
407 | } |
408 | ||
409 | static int snd_aicapcm_pcm_prepare(struct snd_pcm_substream | |
410 | *substream) | |
411 | { | |
412 | struct snd_card_aica *dreamcastcard = substream->pcm->private_data; | |
413 | if ((substream->runtime)->format == SNDRV_PCM_FORMAT_S16_LE) | |
414 | dreamcastcard->channel->sfmt = SM_16BIT; | |
415 | dreamcastcard->channel->freq = substream->runtime->rate; | |
416 | dreamcastcard->substream = substream; | |
417 | return 0; | |
418 | } | |
419 | ||
420 | static int snd_aicapcm_pcm_trigger(struct snd_pcm_substream | |
421 | *substream, int cmd) | |
422 | { | |
198de43d AM |
423 | switch (cmd) { |
424 | case SNDRV_PCM_TRIGGER_START: | |
425 | spu_begin_dma(substream); | |
426 | break; | |
427 | case SNDRV_PCM_TRIGGER_STOP: | |
198de43d AM |
428 | aica_chn_halt(); |
429 | break; | |
430 | default: | |
431 | return -EINVAL; | |
432 | } | |
433 | return 0; | |
434 | } | |
435 | ||
436 | static unsigned long snd_aicapcm_pcm_pointer(struct snd_pcm_substream | |
437 | *substream) | |
438 | { | |
439 | return readl(AICA_CONTROL_CHANNEL_SAMPLE_NUMBER); | |
440 | } | |
441 | ||
442 | static struct snd_pcm_ops snd_aicapcm_playback_ops = { | |
443 | .open = snd_aicapcm_pcm_open, | |
444 | .close = snd_aicapcm_pcm_close, | |
445 | .ioctl = snd_pcm_lib_ioctl, | |
446 | .hw_params = snd_aicapcm_pcm_hw_params, | |
447 | .hw_free = snd_aicapcm_pcm_hw_free, | |
448 | .prepare = snd_aicapcm_pcm_prepare, | |
449 | .trigger = snd_aicapcm_pcm_trigger, | |
450 | .pointer = snd_aicapcm_pcm_pointer, | |
451 | }; | |
452 | ||
453 | /* TO DO: set up to handle more than one pcm instance */ | |
454 | static int __init snd_aicapcmchip(struct snd_card_aica | |
455 | *dreamcastcard, int pcm_index) | |
456 | { | |
457 | struct snd_pcm *pcm; | |
458 | int err; | |
459 | /* AICA has no capture ability */ | |
460 | err = | |
d20b9b20 TI |
461 | snd_pcm_new(dreamcastcard->card, "AICA PCM", pcm_index, 1, 0, |
462 | &pcm); | |
198de43d AM |
463 | if (unlikely(err < 0)) |
464 | return err; | |
465 | pcm->private_data = dreamcastcard; | |
466 | strcpy(pcm->name, "AICA PCM"); | |
467 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, | |
468 | &snd_aicapcm_playback_ops); | |
469 | /* Allocate the DMA buffers */ | |
470 | err = | |
471 | snd_pcm_lib_preallocate_pages_for_all(pcm, | |
472 | SNDRV_DMA_TYPE_CONTINUOUS, | |
473 | snd_dma_continuous_data | |
474 | (GFP_KERNEL), | |
475 | AICA_BUFFER_SIZE, | |
476 | AICA_BUFFER_SIZE); | |
477 | return err; | |
478 | } | |
479 | ||
480 | /* Mixer controls */ | |
a5ce8890 | 481 | #define aica_pcmswitch_info snd_ctl_boolean_mono_info |
198de43d AM |
482 | |
483 | static int aica_pcmswitch_get(struct snd_kcontrol *kcontrol, | |
484 | struct snd_ctl_elem_value *ucontrol) | |
485 | { | |
486 | ucontrol->value.integer.value[0] = 1; /* TO DO: Fix me */ | |
487 | return 0; | |
488 | } | |
489 | ||
490 | static int aica_pcmswitch_put(struct snd_kcontrol *kcontrol, | |
491 | struct snd_ctl_elem_value *ucontrol) | |
492 | { | |
493 | if (ucontrol->value.integer.value[0] == 1) | |
494 | return 0; /* TO DO: Fix me */ | |
495 | else | |
496 | aica_chn_halt(); | |
497 | return 0; | |
498 | } | |
499 | ||
500 | static int aica_pcmvolume_info(struct snd_kcontrol *kcontrol, | |
501 | struct snd_ctl_elem_info *uinfo) | |
502 | { | |
503 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; | |
504 | uinfo->count = 1; | |
505 | uinfo->value.integer.min = 0; | |
506 | uinfo->value.integer.max = 0xFF; | |
507 | return 0; | |
508 | } | |
509 | ||
510 | static int aica_pcmvolume_get(struct snd_kcontrol *kcontrol, | |
511 | struct snd_ctl_elem_value *ucontrol) | |
512 | { | |
513 | struct snd_card_aica *dreamcastcard; | |
514 | dreamcastcard = kcontrol->private_data; | |
515 | if (unlikely(!dreamcastcard->channel)) | |
516 | return -ETXTBSY; /* we've not yet been set up */ | |
517 | ucontrol->value.integer.value[0] = dreamcastcard->channel->vol; | |
518 | return 0; | |
519 | } | |
520 | ||
521 | static int aica_pcmvolume_put(struct snd_kcontrol *kcontrol, | |
522 | struct snd_ctl_elem_value *ucontrol) | |
523 | { | |
524 | struct snd_card_aica *dreamcastcard; | |
3b892467 | 525 | unsigned int vol; |
198de43d AM |
526 | dreamcastcard = kcontrol->private_data; |
527 | if (unlikely(!dreamcastcard->channel)) | |
528 | return -ETXTBSY; | |
3b892467 TI |
529 | vol = ucontrol->value.integer.value[0]; |
530 | if (vol > 0xff) | |
531 | return -EINVAL; | |
532 | if (unlikely(dreamcastcard->channel->vol == vol)) | |
198de43d AM |
533 | return 0; |
534 | dreamcastcard->channel->vol = ucontrol->value.integer.value[0]; | |
535 | dreamcastcard->master_volume = ucontrol->value.integer.value[0]; | |
536 | spu_memload(AICA_CHANNEL0_CONTROL_OFFSET, | |
d20b9b20 | 537 | dreamcastcard->channel, sizeof(struct aica_channel)); |
198de43d AM |
538 | return 1; |
539 | } | |
540 | ||
541 | static struct snd_kcontrol_new snd_aica_pcmswitch_control __devinitdata = { | |
542 | .iface = SNDRV_CTL_ELEM_IFACE_MIXER, | |
543 | .name = "PCM Playback Switch", | |
544 | .index = 0, | |
545 | .info = aica_pcmswitch_info, | |
546 | .get = aica_pcmswitch_get, | |
547 | .put = aica_pcmswitch_put | |
548 | }; | |
549 | ||
550 | static struct snd_kcontrol_new snd_aica_pcmvolume_control __devinitdata = { | |
551 | .iface = SNDRV_CTL_ELEM_IFACE_MIXER, | |
552 | .name = "PCM Playback Volume", | |
553 | .index = 0, | |
554 | .info = aica_pcmvolume_info, | |
555 | .get = aica_pcmvolume_get, | |
556 | .put = aica_pcmvolume_put | |
557 | }; | |
558 | ||
559 | static int load_aica_firmware(void) | |
560 | { | |
561 | int err; | |
562 | const struct firmware *fw_entry; | |
563 | spu_reset(); | |
564 | err = request_firmware(&fw_entry, "aica_firmware.bin", &pd->dev); | |
565 | if (unlikely(err)) | |
566 | return err; | |
567 | /* write firware into memory */ | |
568 | spu_disable(); | |
569 | spu_memload(0, fw_entry->data, fw_entry->size); | |
570 | spu_enable(); | |
571 | release_firmware(fw_entry); | |
572 | return err; | |
573 | } | |
574 | ||
575 | static int __devinit add_aicamixer_controls(struct snd_card_aica | |
576 | *dreamcastcard) | |
577 | { | |
578 | int err; | |
579 | err = snd_ctl_add | |
580 | (dreamcastcard->card, | |
581 | snd_ctl_new1(&snd_aica_pcmvolume_control, dreamcastcard)); | |
582 | if (unlikely(err < 0)) | |
583 | return err; | |
584 | err = snd_ctl_add | |
585 | (dreamcastcard->card, | |
586 | snd_ctl_new1(&snd_aica_pcmswitch_control, dreamcastcard)); | |
587 | if (unlikely(err < 0)) | |
588 | return err; | |
589 | return 0; | |
590 | } | |
591 | ||
592 | static int snd_aica_remove(struct platform_device *devptr) | |
593 | { | |
594 | struct snd_card_aica *dreamcastcard; | |
595 | dreamcastcard = platform_get_drvdata(devptr); | |
596 | if (unlikely(!dreamcastcard)) | |
597 | return -ENODEV; | |
598 | snd_card_free(dreamcastcard->card); | |
599 | kfree(dreamcastcard); | |
600 | platform_set_drvdata(devptr, NULL); | |
601 | return 0; | |
602 | } | |
603 | ||
604 | static int __init snd_aica_probe(struct platform_device *devptr) | |
605 | { | |
606 | int err; | |
607 | struct snd_card_aica *dreamcastcard; | |
608 | dreamcastcard = kmalloc(sizeof(struct snd_card_aica), GFP_KERNEL); | |
609 | if (unlikely(!dreamcastcard)) | |
610 | return -ENOMEM; | |
611 | dreamcastcard->card = | |
612 | snd_card_new(index, SND_AICA_DRIVER, THIS_MODULE, 0); | |
613 | if (unlikely(!dreamcastcard->card)) { | |
614 | kfree(dreamcastcard); | |
615 | return -ENODEV; | |
616 | } | |
617 | strcpy(dreamcastcard->card->driver, "snd_aica"); | |
618 | strcpy(dreamcastcard->card->shortname, SND_AICA_DRIVER); | |
619 | strcpy(dreamcastcard->card->longname, | |
620 | "Yamaha AICA Super Intelligent Sound Processor for SEGA Dreamcast"); | |
d20b9b20 TI |
621 | /* Prepare to use the queue */ |
622 | INIT_WORK(&(dreamcastcard->spu_dma_work), run_spu_dma); | |
198de43d AM |
623 | /* Load the PCM 'chip' */ |
624 | err = snd_aicapcmchip(dreamcastcard, 0); | |
625 | if (unlikely(err < 0)) | |
626 | goto freedreamcast; | |
627 | snd_card_set_dev(dreamcastcard->card, &devptr->dev); | |
628 | dreamcastcard->timer.data = 0; | |
629 | dreamcastcard->channel = NULL; | |
630 | /* Add basic controls */ | |
631 | err = add_aicamixer_controls(dreamcastcard); | |
632 | if (unlikely(err < 0)) | |
633 | goto freedreamcast; | |
634 | /* Register the card with ALSA subsystem */ | |
635 | err = snd_card_register(dreamcastcard->card); | |
636 | if (unlikely(err < 0)) | |
637 | goto freedreamcast; | |
638 | platform_set_drvdata(devptr, dreamcastcard); | |
639 | aica_queue = create_workqueue(CARD_NAME); | |
640 | if (unlikely(!aica_queue)) | |
641 | goto freedreamcast; | |
642 | snd_printk | |
643 | ("ALSA Driver for Yamaha AICA Super Intelligent Sound Processor\n"); | |
644 | return 0; | |
645 | freedreamcast: | |
646 | snd_card_free(dreamcastcard->card); | |
647 | kfree(dreamcastcard); | |
648 | return err; | |
649 | } | |
650 | ||
651 | static struct platform_driver snd_aica_driver = { | |
652 | .probe = snd_aica_probe, | |
653 | .remove = snd_aica_remove, | |
654 | .driver = { | |
655 | .name = SND_AICA_DRIVER}, | |
656 | }; | |
657 | ||
658 | static int __init aica_init(void) | |
659 | { | |
660 | int err; | |
661 | err = platform_driver_register(&snd_aica_driver); | |
662 | if (unlikely(err < 0)) | |
663 | return err; | |
664 | pd = platform_device_register_simple(SND_AICA_DRIVER, -1, | |
665 | aica_memory_space, 2); | |
801678c5 | 666 | if (IS_ERR(pd)) { |
198de43d AM |
667 | platform_driver_unregister(&snd_aica_driver); |
668 | return PTR_ERR(pd); | |
669 | } | |
670 | /* Load the firmware */ | |
671 | return load_aica_firmware(); | |
672 | } | |
673 | ||
674 | static void __exit aica_exit(void) | |
675 | { | |
d20b9b20 TI |
676 | /* Destroy the aica kernel thread * |
677 | * being extra cautious to check if it exists*/ | |
678 | if (likely(aica_queue)) | |
679 | destroy_workqueue(aica_queue); | |
198de43d AM |
680 | platform_device_unregister(pd); |
681 | platform_driver_unregister(&snd_aica_driver); | |
682 | /* Kill any sound still playing and reset ARM7 to safe state */ | |
683 | spu_reset(); | |
684 | } | |
685 | ||
686 | module_init(aica_init); | |
687 | module_exit(aica_exit); |