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> | |
65a77217 | 32 | #include <linux/module.h> |
198de43d AM |
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> | |
6cbbfe1c | 38 | #include <linux/io.h> |
198de43d AM |
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> | |
198de43d | 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}}"); | |
f37325a9 | 52 | MODULE_FIRMWARE("aica_firmware.bin"); |
198de43d AM |
53 | |
54 | /* module parameters */ | |
55 | #define CARD_NAME "AICA" | |
56 | static int index = -1; | |
57 | static char *id; | |
a67ff6a5 | 58 | static bool enable = 1; |
198de43d AM |
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; | |
44e0b682 | 109 | unsigned long flags; |
5e246b85 TI |
110 | if (snd_BUG_ON(length % 4)) |
111 | return; | |
198de43d AM |
112 | for (i = 0; i < length; i++) { |
113 | if (!(i % 8)) | |
114 | spu_write_wait(); | |
44e0b682 | 115 | local_irq_save(flags); |
198de43d | 116 | writel(what, toi + SPU_MEMORY_BASE); |
44e0b682 | 117 | local_irq_restore(flags); |
198de43d AM |
118 | toi++; |
119 | } | |
120 | } | |
121 | ||
122 | /* spu_memload - write to SPU address space */ | |
123 | static void spu_memload(u32 toi, void *from, int length) | |
124 | { | |
44e0b682 | 125 | unsigned long flags; |
198de43d AM |
126 | u32 *froml = from; |
127 | u32 __iomem *to = (u32 __iomem *) (SPU_MEMORY_BASE + toi); | |
128 | int i; | |
129 | u32 val; | |
130 | length = DIV_ROUND_UP(length, 4); | |
131 | spu_write_wait(); | |
132 | for (i = 0; i < length; i++) { | |
133 | if (!(i % 8)) | |
134 | spu_write_wait(); | |
135 | val = *froml; | |
44e0b682 | 136 | local_irq_save(flags); |
198de43d | 137 | writel(val, to); |
44e0b682 | 138 | local_irq_restore(flags); |
198de43d AM |
139 | froml++; |
140 | to++; | |
141 | } | |
142 | } | |
143 | ||
144 | /* spu_disable - set spu registers to stop sound output */ | |
145 | static void spu_disable(void) | |
146 | { | |
147 | int i; | |
44e0b682 | 148 | unsigned long flags; |
198de43d AM |
149 | u32 regval; |
150 | spu_write_wait(); | |
151 | regval = readl(ARM_RESET_REGISTER); | |
152 | regval |= 1; | |
153 | spu_write_wait(); | |
44e0b682 | 154 | local_irq_save(flags); |
198de43d | 155 | writel(regval, ARM_RESET_REGISTER); |
44e0b682 | 156 | local_irq_restore(flags); |
198de43d AM |
157 | for (i = 0; i < 64; i++) { |
158 | spu_write_wait(); | |
159 | regval = readl(SPU_REGISTER_BASE + (i * 0x80)); | |
160 | regval = (regval & ~0x4000) | 0x8000; | |
161 | spu_write_wait(); | |
44e0b682 | 162 | local_irq_save(flags); |
198de43d | 163 | writel(regval, SPU_REGISTER_BASE + (i * 0x80)); |
44e0b682 | 164 | local_irq_restore(flags); |
198de43d AM |
165 | } |
166 | } | |
167 | ||
168 | /* spu_enable - set spu registers to enable sound output */ | |
169 | static void spu_enable(void) | |
170 | { | |
44e0b682 | 171 | unsigned long flags; |
198de43d AM |
172 | u32 regval = readl(ARM_RESET_REGISTER); |
173 | regval &= ~1; | |
174 | spu_write_wait(); | |
44e0b682 | 175 | local_irq_save(flags); |
198de43d | 176 | writel(regval, ARM_RESET_REGISTER); |
44e0b682 | 177 | local_irq_restore(flags); |
198de43d AM |
178 | } |
179 | ||
180 | /* | |
181 | * Halt the sound processor, clear the memory, | |
182 | * load some default ARM7 code, and then restart ARM7 | |
183 | */ | |
184 | static void spu_reset(void) | |
185 | { | |
44e0b682 | 186 | unsigned long flags; |
198de43d AM |
187 | spu_disable(); |
188 | spu_memset(0, 0, 0x200000 / 4); | |
189 | /* Put ARM7 in endless loop */ | |
44e0b682 | 190 | local_irq_save(flags); |
48ccb2ce | 191 | __raw_writel(0xea000002, SPU_MEMORY_BASE); |
44e0b682 | 192 | local_irq_restore(flags); |
198de43d AM |
193 | spu_enable(); |
194 | } | |
195 | ||
196 | /* aica_chn_start - write to spu to start playback */ | |
197 | static void aica_chn_start(void) | |
198 | { | |
44e0b682 | 199 | unsigned long flags; |
198de43d | 200 | spu_write_wait(); |
44e0b682 | 201 | local_irq_save(flags); |
198de43d | 202 | writel(AICA_CMD_KICK | AICA_CMD_START, (u32 *) AICA_CONTROL_POINT); |
44e0b682 | 203 | local_irq_restore(flags); |
198de43d AM |
204 | } |
205 | ||
206 | /* aica_chn_halt - write to spu to halt playback */ | |
207 | static void aica_chn_halt(void) | |
208 | { | |
44e0b682 | 209 | unsigned long flags; |
198de43d | 210 | spu_write_wait(); |
44e0b682 | 211 | local_irq_save(flags); |
198de43d | 212 | writel(AICA_CMD_KICK | AICA_CMD_STOP, (u32 *) AICA_CONTROL_POINT); |
44e0b682 | 213 | local_irq_restore(flags); |
198de43d AM |
214 | } |
215 | ||
216 | /* ALSA code below */ | |
217 | static struct snd_pcm_hardware snd_pcm_aica_playback_hw = { | |
218 | .info = (SNDRV_PCM_INFO_NONINTERLEAVED), | |
219 | .formats = | |
220 | (SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_S16_LE | | |
221 | SNDRV_PCM_FMTBIT_IMA_ADPCM), | |
222 | .rates = SNDRV_PCM_RATE_8000_48000, | |
223 | .rate_min = 8000, | |
224 | .rate_max = 48000, | |
225 | .channels_min = 1, | |
226 | .channels_max = 2, | |
227 | .buffer_bytes_max = AICA_BUFFER_SIZE, | |
228 | .period_bytes_min = AICA_PERIOD_SIZE, | |
229 | .period_bytes_max = AICA_PERIOD_SIZE, | |
230 | .periods_min = AICA_PERIOD_NUMBER, | |
231 | .periods_max = AICA_PERIOD_NUMBER, | |
232 | }; | |
233 | ||
234 | static int aica_dma_transfer(int channels, int buffer_size, | |
235 | struct snd_pcm_substream *substream) | |
236 | { | |
237 | int q, err, period_offset; | |
238 | struct snd_card_aica *dreamcastcard; | |
239 | struct snd_pcm_runtime *runtime; | |
44e0b682 | 240 | unsigned long flags; |
ceac4bf3 | 241 | err = 0; |
198de43d AM |
242 | dreamcastcard = substream->pcm->private_data; |
243 | period_offset = dreamcastcard->clicks; | |
244 | period_offset %= (AICA_PERIOD_NUMBER / channels); | |
245 | runtime = substream->runtime; | |
246 | for (q = 0; q < channels; q++) { | |
44e0b682 | 247 | local_irq_save(flags); |
198de43d | 248 | err = dma_xfer(AICA_DMA_CHANNEL, |
d20b9b20 TI |
249 | (unsigned long) (runtime->dma_area + |
250 | (AICA_BUFFER_SIZE * q) / | |
251 | channels + | |
252 | AICA_PERIOD_SIZE * | |
253 | period_offset), | |
198de43d AM |
254 | AICA_CHANNEL0_OFFSET + q * CHANNEL_OFFSET + |
255 | AICA_PERIOD_SIZE * period_offset, | |
256 | buffer_size / channels, AICA_DMA_MODE); | |
44e0b682 AM |
257 | if (unlikely(err < 0)) { |
258 | local_irq_restore(flags); | |
198de43d | 259 | break; |
44e0b682 | 260 | } |
198de43d | 261 | dma_wait_for_completion(AICA_DMA_CHANNEL); |
44e0b682 | 262 | local_irq_restore(flags); |
198de43d AM |
263 | } |
264 | return err; | |
265 | } | |
266 | ||
267 | static void startup_aica(struct snd_card_aica *dreamcastcard) | |
268 | { | |
269 | spu_memload(AICA_CHANNEL0_CONTROL_OFFSET, | |
d20b9b20 | 270 | dreamcastcard->channel, sizeof(struct aica_channel)); |
198de43d AM |
271 | aica_chn_start(); |
272 | } | |
273 | ||
274 | static void run_spu_dma(struct work_struct *work) | |
275 | { | |
276 | int buffer_size; | |
198de43d AM |
277 | struct snd_pcm_runtime *runtime; |
278 | struct snd_card_aica *dreamcastcard; | |
d20b9b20 TI |
279 | dreamcastcard = |
280 | container_of(work, struct snd_card_aica, spu_dma_work); | |
281 | runtime = dreamcastcard->substream->runtime; | |
198de43d | 282 | if (unlikely(dreamcastcard->dma_check == 0)) { |
d20b9b20 TI |
283 | buffer_size = |
284 | frames_to_bytes(runtime, runtime->buffer_size); | |
198de43d AM |
285 | if (runtime->channels > 1) |
286 | dreamcastcard->channel->flags |= 0x01; | |
d20b9b20 TI |
287 | aica_dma_transfer(runtime->channels, buffer_size, |
288 | dreamcastcard->substream); | |
198de43d AM |
289 | startup_aica(dreamcastcard); |
290 | dreamcastcard->clicks = | |
291 | buffer_size / (AICA_PERIOD_SIZE * runtime->channels); | |
292 | return; | |
293 | } else { | |
294 | aica_dma_transfer(runtime->channels, | |
295 | AICA_PERIOD_SIZE * runtime->channels, | |
d20b9b20 | 296 | dreamcastcard->substream); |
198de43d AM |
297 | snd_pcm_period_elapsed(dreamcastcard->substream); |
298 | dreamcastcard->clicks++; | |
299 | if (unlikely(dreamcastcard->clicks >= AICA_PERIOD_NUMBER)) | |
198de43d | 300 | dreamcastcard->clicks %= AICA_PERIOD_NUMBER; |
198de43d AM |
301 | mod_timer(&dreamcastcard->timer, jiffies + 1); |
302 | } | |
303 | } | |
304 | ||
305 | static void aica_period_elapsed(unsigned long timer_var) | |
306 | { | |
307 | /*timer function - so cannot sleep */ | |
308 | int play_period; | |
309 | struct snd_pcm_runtime *runtime; | |
310 | struct snd_pcm_substream *substream; | |
311 | struct snd_card_aica *dreamcastcard; | |
d20b9b20 | 312 | substream = (struct snd_pcm_substream *) timer_var; |
198de43d AM |
313 | runtime = substream->runtime; |
314 | dreamcastcard = substream->pcm->private_data; | |
315 | /* Have we played out an additional period? */ | |
316 | play_period = | |
317 | frames_to_bytes(runtime, | |
318 | readl | |
319 | (AICA_CONTROL_CHANNEL_SAMPLE_NUMBER)) / | |
320 | AICA_PERIOD_SIZE; | |
321 | if (play_period == dreamcastcard->current_period) { | |
322 | /* reschedule the timer */ | |
323 | mod_timer(&(dreamcastcard->timer), jiffies + 1); | |
324 | return; | |
325 | } | |
326 | if (runtime->channels > 1) | |
327 | dreamcastcard->current_period = play_period; | |
328 | if (unlikely(dreamcastcard->dma_check == 0)) | |
329 | dreamcastcard->dma_check = 1; | |
d20b9b20 | 330 | queue_work(aica_queue, &(dreamcastcard->spu_dma_work)); |
198de43d AM |
331 | } |
332 | ||
333 | static void spu_begin_dma(struct snd_pcm_substream *substream) | |
334 | { | |
198de43d AM |
335 | struct snd_card_aica *dreamcastcard; |
336 | struct snd_pcm_runtime *runtime; | |
337 | runtime = substream->runtime; | |
338 | dreamcastcard = substream->pcm->private_data; | |
d20b9b20 TI |
339 | /*get the queue to do the work */ |
340 | queue_work(aica_queue, &(dreamcastcard->spu_dma_work)); | |
198de43d AM |
341 | /* Timer may already be running */ |
342 | if (unlikely(dreamcastcard->timer.data)) { | |
343 | mod_timer(&dreamcastcard->timer, jiffies + 4); | |
344 | return; | |
345 | } | |
da1a3924 TI |
346 | setup_timer(&dreamcastcard->timer, aica_period_elapsed, |
347 | (unsigned long) substream); | |
348 | mod_timer(&dreamcastcard->timer, jiffies + 4); | |
198de43d AM |
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 | ||
e74033a8 | 541 | static struct snd_kcontrol_new snd_aica_pcmswitch_control = { |
198de43d AM |
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 | ||
e74033a8 | 550 | static struct snd_kcontrol_new snd_aica_pcmvolume_control = { |
198de43d AM |
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; | |
877d0310 | 567 | /* write firmware into memory */ |
198de43d AM |
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 | ||
e74033a8 | 575 | static int add_aicamixer_controls(struct snd_card_aica *dreamcastcard) |
198de43d AM |
576 | { |
577 | int err; | |
578 | err = snd_ctl_add | |
579 | (dreamcastcard->card, | |
580 | snd_ctl_new1(&snd_aica_pcmvolume_control, dreamcastcard)); | |
581 | if (unlikely(err < 0)) | |
582 | return err; | |
583 | err = snd_ctl_add | |
584 | (dreamcastcard->card, | |
585 | snd_ctl_new1(&snd_aica_pcmswitch_control, dreamcastcard)); | |
586 | if (unlikely(err < 0)) | |
587 | return err; | |
588 | return 0; | |
589 | } | |
590 | ||
e74033a8 | 591 | static int snd_aica_remove(struct platform_device *devptr) |
198de43d AM |
592 | { |
593 | struct snd_card_aica *dreamcastcard; | |
594 | dreamcastcard = platform_get_drvdata(devptr); | |
595 | if (unlikely(!dreamcastcard)) | |
596 | return -ENODEV; | |
597 | snd_card_free(dreamcastcard->card); | |
598 | kfree(dreamcastcard); | |
198de43d AM |
599 | return 0; |
600 | } | |
601 | ||
e74033a8 | 602 | static int snd_aica_probe(struct platform_device *devptr) |
198de43d AM |
603 | { |
604 | int err; | |
605 | struct snd_card_aica *dreamcastcard; | |
606 | dreamcastcard = kmalloc(sizeof(struct snd_card_aica), GFP_KERNEL); | |
607 | if (unlikely(!dreamcastcard)) | |
608 | return -ENOMEM; | |
e7182ac5 TI |
609 | err = snd_card_new(&devptr->dev, index, SND_AICA_DRIVER, |
610 | THIS_MODULE, 0, &dreamcastcard->card); | |
bd7dd77c | 611 | if (unlikely(err < 0)) { |
198de43d | 612 | kfree(dreamcastcard); |
bd7dd77c | 613 | return err; |
198de43d AM |
614 | } |
615 | strcpy(dreamcastcard->card->driver, "snd_aica"); | |
616 | strcpy(dreamcastcard->card->shortname, SND_AICA_DRIVER); | |
617 | strcpy(dreamcastcard->card->longname, | |
618 | "Yamaha AICA Super Intelligent Sound Processor for SEGA Dreamcast"); | |
d20b9b20 TI |
619 | /* Prepare to use the queue */ |
620 | INIT_WORK(&(dreamcastcard->spu_dma_work), run_spu_dma); | |
198de43d AM |
621 | /* Load the PCM 'chip' */ |
622 | err = snd_aicapcmchip(dreamcastcard, 0); | |
623 | if (unlikely(err < 0)) | |
624 | goto freedreamcast; | |
198de43d AM |
625 | dreamcastcard->timer.data = 0; |
626 | dreamcastcard->channel = NULL; | |
627 | /* Add basic controls */ | |
628 | err = add_aicamixer_controls(dreamcastcard); | |
629 | if (unlikely(err < 0)) | |
630 | goto freedreamcast; | |
631 | /* Register the card with ALSA subsystem */ | |
632 | err = snd_card_register(dreamcastcard->card); | |
633 | if (unlikely(err < 0)) | |
634 | goto freedreamcast; | |
635 | platform_set_drvdata(devptr, dreamcastcard); | |
636 | aica_queue = create_workqueue(CARD_NAME); | |
637 | if (unlikely(!aica_queue)) | |
638 | goto freedreamcast; | |
639 | snd_printk | |
640 | ("ALSA Driver for Yamaha AICA Super Intelligent Sound Processor\n"); | |
641 | return 0; | |
642 | freedreamcast: | |
643 | snd_card_free(dreamcastcard->card); | |
644 | kfree(dreamcastcard); | |
645 | return err; | |
646 | } | |
647 | ||
648 | static struct platform_driver snd_aica_driver = { | |
649 | .probe = snd_aica_probe, | |
e74033a8 | 650 | .remove = snd_aica_remove, |
198de43d | 651 | .driver = { |
8bf01d8a | 652 | .name = SND_AICA_DRIVER, |
8bf01d8a | 653 | }, |
198de43d AM |
654 | }; |
655 | ||
656 | static int __init aica_init(void) | |
657 | { | |
658 | int err; | |
659 | err = platform_driver_register(&snd_aica_driver); | |
660 | if (unlikely(err < 0)) | |
661 | return err; | |
662 | pd = platform_device_register_simple(SND_AICA_DRIVER, -1, | |
663 | aica_memory_space, 2); | |
801678c5 | 664 | if (IS_ERR(pd)) { |
198de43d AM |
665 | platform_driver_unregister(&snd_aica_driver); |
666 | return PTR_ERR(pd); | |
667 | } | |
668 | /* Load the firmware */ | |
669 | return load_aica_firmware(); | |
670 | } | |
671 | ||
672 | static void __exit aica_exit(void) | |
673 | { | |
d20b9b20 TI |
674 | /* Destroy the aica kernel thread * |
675 | * being extra cautious to check if it exists*/ | |
676 | if (likely(aica_queue)) | |
677 | destroy_workqueue(aica_queue); | |
198de43d AM |
678 | platform_device_unregister(pd); |
679 | platform_driver_unregister(&snd_aica_driver); | |
680 | /* Kill any sound still playing and reset ARM7 to safe state */ | |
681 | spu_reset(); | |
682 | } | |
683 | ||
684 | module_init(aica_init); | |
685 | module_exit(aica_exit); |