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 | ||
198de43d AM |
66 | /* Simple platform device */ |
67 | static struct platform_device *pd; | |
68 | static struct resource aica_memory_space[2] = { | |
69 | { | |
70 | .name = "AICA ARM CONTROL", | |
71 | .start = ARM_RESET_REGISTER, | |
72 | .flags = IORESOURCE_MEM, | |
73 | .end = ARM_RESET_REGISTER + 3, | |
74 | }, | |
75 | { | |
76 | .name = "AICA Sound RAM", | |
77 | .start = SPU_MEMORY_BASE, | |
78 | .flags = IORESOURCE_MEM, | |
79 | .end = SPU_MEMORY_BASE + 0x200000 - 1, | |
80 | }, | |
81 | }; | |
82 | ||
83 | /* SPU specific functions */ | |
84 | /* spu_write_wait - wait for G2-SH FIFO to clear */ | |
85 | static void spu_write_wait(void) | |
86 | { | |
87 | int time_count; | |
88 | time_count = 0; | |
89 | while (1) { | |
90 | if (!(readl(G2_FIFO) & 0x11)) | |
91 | break; | |
92 | /* To ensure hardware failure doesn't wedge kernel */ | |
93 | time_count++; | |
d20b9b20 TI |
94 | if (time_count > 0x10000) { |
95 | snd_printk | |
96 | ("WARNING: G2 FIFO appears to be blocked.\n"); | |
198de43d AM |
97 | break; |
98 | } | |
99 | } | |
100 | } | |
101 | ||
102 | /* spu_memset - write to memory in SPU address space */ | |
103 | static void spu_memset(u32 toi, u32 what, int length) | |
104 | { | |
105 | int i; | |
44e0b682 | 106 | unsigned long flags; |
5e246b85 TI |
107 | if (snd_BUG_ON(length % 4)) |
108 | return; | |
198de43d AM |
109 | for (i = 0; i < length; i++) { |
110 | if (!(i % 8)) | |
111 | spu_write_wait(); | |
44e0b682 | 112 | local_irq_save(flags); |
198de43d | 113 | writel(what, toi + SPU_MEMORY_BASE); |
44e0b682 | 114 | local_irq_restore(flags); |
198de43d AM |
115 | toi++; |
116 | } | |
117 | } | |
118 | ||
119 | /* spu_memload - write to SPU address space */ | |
120 | static void spu_memload(u32 toi, void *from, int length) | |
121 | { | |
44e0b682 | 122 | unsigned long flags; |
198de43d AM |
123 | u32 *froml = from; |
124 | u32 __iomem *to = (u32 __iomem *) (SPU_MEMORY_BASE + toi); | |
125 | int i; | |
126 | u32 val; | |
127 | length = DIV_ROUND_UP(length, 4); | |
128 | spu_write_wait(); | |
129 | for (i = 0; i < length; i++) { | |
130 | if (!(i % 8)) | |
131 | spu_write_wait(); | |
132 | val = *froml; | |
44e0b682 | 133 | local_irq_save(flags); |
198de43d | 134 | writel(val, to); |
44e0b682 | 135 | local_irq_restore(flags); |
198de43d AM |
136 | froml++; |
137 | to++; | |
138 | } | |
139 | } | |
140 | ||
141 | /* spu_disable - set spu registers to stop sound output */ | |
142 | static void spu_disable(void) | |
143 | { | |
144 | int i; | |
44e0b682 | 145 | unsigned long flags; |
198de43d AM |
146 | u32 regval; |
147 | spu_write_wait(); | |
148 | regval = readl(ARM_RESET_REGISTER); | |
149 | regval |= 1; | |
150 | spu_write_wait(); | |
44e0b682 | 151 | local_irq_save(flags); |
198de43d | 152 | writel(regval, ARM_RESET_REGISTER); |
44e0b682 | 153 | local_irq_restore(flags); |
198de43d AM |
154 | for (i = 0; i < 64; i++) { |
155 | spu_write_wait(); | |
156 | regval = readl(SPU_REGISTER_BASE + (i * 0x80)); | |
157 | regval = (regval & ~0x4000) | 0x8000; | |
158 | spu_write_wait(); | |
44e0b682 | 159 | local_irq_save(flags); |
198de43d | 160 | writel(regval, SPU_REGISTER_BASE + (i * 0x80)); |
44e0b682 | 161 | local_irq_restore(flags); |
198de43d AM |
162 | } |
163 | } | |
164 | ||
165 | /* spu_enable - set spu registers to enable sound output */ | |
166 | static void spu_enable(void) | |
167 | { | |
44e0b682 | 168 | unsigned long flags; |
198de43d AM |
169 | u32 regval = readl(ARM_RESET_REGISTER); |
170 | regval &= ~1; | |
171 | spu_write_wait(); | |
44e0b682 | 172 | local_irq_save(flags); |
198de43d | 173 | writel(regval, ARM_RESET_REGISTER); |
44e0b682 | 174 | local_irq_restore(flags); |
198de43d AM |
175 | } |
176 | ||
177 | /* | |
178 | * Halt the sound processor, clear the memory, | |
179 | * load some default ARM7 code, and then restart ARM7 | |
180 | */ | |
181 | static void spu_reset(void) | |
182 | { | |
44e0b682 | 183 | unsigned long flags; |
198de43d AM |
184 | spu_disable(); |
185 | spu_memset(0, 0, 0x200000 / 4); | |
186 | /* Put ARM7 in endless loop */ | |
44e0b682 | 187 | local_irq_save(flags); |
48ccb2ce | 188 | __raw_writel(0xea000002, SPU_MEMORY_BASE); |
44e0b682 | 189 | local_irq_restore(flags); |
198de43d AM |
190 | spu_enable(); |
191 | } | |
192 | ||
193 | /* aica_chn_start - write to spu to start playback */ | |
194 | static void aica_chn_start(void) | |
195 | { | |
44e0b682 | 196 | unsigned long flags; |
198de43d | 197 | spu_write_wait(); |
44e0b682 | 198 | local_irq_save(flags); |
198de43d | 199 | writel(AICA_CMD_KICK | AICA_CMD_START, (u32 *) AICA_CONTROL_POINT); |
44e0b682 | 200 | local_irq_restore(flags); |
198de43d AM |
201 | } |
202 | ||
203 | /* aica_chn_halt - write to spu to halt playback */ | |
204 | static void aica_chn_halt(void) | |
205 | { | |
44e0b682 | 206 | unsigned long flags; |
198de43d | 207 | spu_write_wait(); |
44e0b682 | 208 | local_irq_save(flags); |
198de43d | 209 | writel(AICA_CMD_KICK | AICA_CMD_STOP, (u32 *) AICA_CONTROL_POINT); |
44e0b682 | 210 | local_irq_restore(flags); |
198de43d AM |
211 | } |
212 | ||
213 | /* ALSA code below */ | |
214 | static struct snd_pcm_hardware snd_pcm_aica_playback_hw = { | |
215 | .info = (SNDRV_PCM_INFO_NONINTERLEAVED), | |
216 | .formats = | |
217 | (SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_S16_LE | | |
218 | SNDRV_PCM_FMTBIT_IMA_ADPCM), | |
219 | .rates = SNDRV_PCM_RATE_8000_48000, | |
220 | .rate_min = 8000, | |
221 | .rate_max = 48000, | |
222 | .channels_min = 1, | |
223 | .channels_max = 2, | |
224 | .buffer_bytes_max = AICA_BUFFER_SIZE, | |
225 | .period_bytes_min = AICA_PERIOD_SIZE, | |
226 | .period_bytes_max = AICA_PERIOD_SIZE, | |
227 | .periods_min = AICA_PERIOD_NUMBER, | |
228 | .periods_max = AICA_PERIOD_NUMBER, | |
229 | }; | |
230 | ||
231 | static int aica_dma_transfer(int channels, int buffer_size, | |
232 | struct snd_pcm_substream *substream) | |
233 | { | |
234 | int q, err, period_offset; | |
235 | struct snd_card_aica *dreamcastcard; | |
236 | struct snd_pcm_runtime *runtime; | |
44e0b682 | 237 | unsigned long flags; |
ceac4bf3 | 238 | err = 0; |
198de43d AM |
239 | dreamcastcard = substream->pcm->private_data; |
240 | period_offset = dreamcastcard->clicks; | |
241 | period_offset %= (AICA_PERIOD_NUMBER / channels); | |
242 | runtime = substream->runtime; | |
243 | for (q = 0; q < channels; q++) { | |
44e0b682 | 244 | local_irq_save(flags); |
198de43d | 245 | err = dma_xfer(AICA_DMA_CHANNEL, |
d20b9b20 TI |
246 | (unsigned long) (runtime->dma_area + |
247 | (AICA_BUFFER_SIZE * q) / | |
248 | channels + | |
249 | AICA_PERIOD_SIZE * | |
250 | period_offset), | |
198de43d AM |
251 | AICA_CHANNEL0_OFFSET + q * CHANNEL_OFFSET + |
252 | AICA_PERIOD_SIZE * period_offset, | |
253 | buffer_size / channels, AICA_DMA_MODE); | |
44e0b682 AM |
254 | if (unlikely(err < 0)) { |
255 | local_irq_restore(flags); | |
198de43d | 256 | break; |
44e0b682 | 257 | } |
198de43d | 258 | dma_wait_for_completion(AICA_DMA_CHANNEL); |
44e0b682 | 259 | local_irq_restore(flags); |
198de43d AM |
260 | } |
261 | return err; | |
262 | } | |
263 | ||
264 | static void startup_aica(struct snd_card_aica *dreamcastcard) | |
265 | { | |
266 | spu_memload(AICA_CHANNEL0_CONTROL_OFFSET, | |
d20b9b20 | 267 | dreamcastcard->channel, sizeof(struct aica_channel)); |
198de43d AM |
268 | aica_chn_start(); |
269 | } | |
270 | ||
271 | static void run_spu_dma(struct work_struct *work) | |
272 | { | |
273 | int buffer_size; | |
198de43d AM |
274 | struct snd_pcm_runtime *runtime; |
275 | struct snd_card_aica *dreamcastcard; | |
d20b9b20 TI |
276 | dreamcastcard = |
277 | container_of(work, struct snd_card_aica, spu_dma_work); | |
278 | runtime = dreamcastcard->substream->runtime; | |
198de43d | 279 | if (unlikely(dreamcastcard->dma_check == 0)) { |
d20b9b20 TI |
280 | buffer_size = |
281 | frames_to_bytes(runtime, runtime->buffer_size); | |
198de43d AM |
282 | if (runtime->channels > 1) |
283 | dreamcastcard->channel->flags |= 0x01; | |
d20b9b20 TI |
284 | aica_dma_transfer(runtime->channels, buffer_size, |
285 | dreamcastcard->substream); | |
198de43d AM |
286 | startup_aica(dreamcastcard); |
287 | dreamcastcard->clicks = | |
288 | buffer_size / (AICA_PERIOD_SIZE * runtime->channels); | |
289 | return; | |
290 | } else { | |
291 | aica_dma_transfer(runtime->channels, | |
292 | AICA_PERIOD_SIZE * runtime->channels, | |
d20b9b20 | 293 | dreamcastcard->substream); |
198de43d AM |
294 | snd_pcm_period_elapsed(dreamcastcard->substream); |
295 | dreamcastcard->clicks++; | |
296 | if (unlikely(dreamcastcard->clicks >= AICA_PERIOD_NUMBER)) | |
198de43d | 297 | dreamcastcard->clicks %= AICA_PERIOD_NUMBER; |
198de43d AM |
298 | mod_timer(&dreamcastcard->timer, jiffies + 1); |
299 | } | |
300 | } | |
301 | ||
302 | static void aica_period_elapsed(unsigned long timer_var) | |
303 | { | |
304 | /*timer function - so cannot sleep */ | |
305 | int play_period; | |
306 | struct snd_pcm_runtime *runtime; | |
307 | struct snd_pcm_substream *substream; | |
308 | struct snd_card_aica *dreamcastcard; | |
d20b9b20 | 309 | substream = (struct snd_pcm_substream *) timer_var; |
198de43d AM |
310 | runtime = substream->runtime; |
311 | dreamcastcard = substream->pcm->private_data; | |
312 | /* Have we played out an additional period? */ | |
313 | play_period = | |
314 | frames_to_bytes(runtime, | |
315 | readl | |
316 | (AICA_CONTROL_CHANNEL_SAMPLE_NUMBER)) / | |
317 | AICA_PERIOD_SIZE; | |
318 | if (play_period == dreamcastcard->current_period) { | |
319 | /* reschedule the timer */ | |
320 | mod_timer(&(dreamcastcard->timer), jiffies + 1); | |
321 | return; | |
322 | } | |
323 | if (runtime->channels > 1) | |
324 | dreamcastcard->current_period = play_period; | |
325 | if (unlikely(dreamcastcard->dma_check == 0)) | |
326 | dreamcastcard->dma_check = 1; | |
43aa56d9 | 327 | schedule_work(&(dreamcastcard->spu_dma_work)); |
198de43d AM |
328 | } |
329 | ||
330 | static void spu_begin_dma(struct snd_pcm_substream *substream) | |
331 | { | |
198de43d AM |
332 | struct snd_card_aica *dreamcastcard; |
333 | struct snd_pcm_runtime *runtime; | |
334 | runtime = substream->runtime; | |
335 | dreamcastcard = substream->pcm->private_data; | |
d20b9b20 | 336 | /*get the queue to do the work */ |
43aa56d9 | 337 | schedule_work(&(dreamcastcard->spu_dma_work)); |
198de43d AM |
338 | /* Timer may already be running */ |
339 | if (unlikely(dreamcastcard->timer.data)) { | |
340 | mod_timer(&dreamcastcard->timer, jiffies + 4); | |
341 | return; | |
342 | } | |
da1a3924 TI |
343 | setup_timer(&dreamcastcard->timer, aica_period_elapsed, |
344 | (unsigned long) substream); | |
345 | mod_timer(&dreamcastcard->timer, jiffies + 4); | |
198de43d AM |
346 | } |
347 | ||
348 | static int snd_aicapcm_pcm_open(struct snd_pcm_substream | |
349 | *substream) | |
350 | { | |
351 | struct snd_pcm_runtime *runtime; | |
352 | struct aica_channel *channel; | |
353 | struct snd_card_aica *dreamcastcard; | |
354 | if (!enable) | |
355 | return -ENOENT; | |
356 | dreamcastcard = substream->pcm->private_data; | |
357 | channel = kmalloc(sizeof(struct aica_channel), GFP_KERNEL); | |
358 | if (!channel) | |
359 | return -ENOMEM; | |
360 | /* set defaults for channel */ | |
361 | channel->sfmt = SM_8BIT; | |
362 | channel->cmd = AICA_CMD_START; | |
363 | channel->vol = dreamcastcard->master_volume; | |
364 | channel->pan = 0x80; | |
365 | channel->pos = 0; | |
366 | channel->flags = 0; /* default to mono */ | |
367 | dreamcastcard->channel = channel; | |
368 | runtime = substream->runtime; | |
369 | runtime->hw = snd_pcm_aica_playback_hw; | |
370 | spu_enable(); | |
371 | dreamcastcard->clicks = 0; | |
372 | dreamcastcard->current_period = 0; | |
373 | dreamcastcard->dma_check = 0; | |
374 | return 0; | |
375 | } | |
376 | ||
377 | static int snd_aicapcm_pcm_close(struct snd_pcm_substream | |
378 | *substream) | |
379 | { | |
380 | struct snd_card_aica *dreamcastcard = substream->pcm->private_data; | |
43aa56d9 | 381 | flush_work(&(dreamcastcard->spu_dma_work)); |
d20b9b20 TI |
382 | if (dreamcastcard->timer.data) |
383 | del_timer(&dreamcastcard->timer); | |
198de43d AM |
384 | kfree(dreamcastcard->channel); |
385 | spu_disable(); | |
386 | return 0; | |
387 | } | |
388 | ||
389 | static int snd_aicapcm_pcm_hw_free(struct snd_pcm_substream | |
390 | *substream) | |
391 | { | |
392 | /* Free the DMA buffer */ | |
393 | return snd_pcm_lib_free_pages(substream); | |
394 | } | |
395 | ||
396 | static int snd_aicapcm_pcm_hw_params(struct snd_pcm_substream | |
397 | *substream, struct snd_pcm_hw_params | |
398 | *hw_params) | |
399 | { | |
400 | /* Allocate a DMA buffer using ALSA built-ins */ | |
401 | return | |
d20b9b20 TI |
402 | snd_pcm_lib_malloc_pages(substream, |
403 | params_buffer_bytes(hw_params)); | |
198de43d AM |
404 | } |
405 | ||
406 | static int snd_aicapcm_pcm_prepare(struct snd_pcm_substream | |
407 | *substream) | |
408 | { | |
409 | struct snd_card_aica *dreamcastcard = substream->pcm->private_data; | |
410 | if ((substream->runtime)->format == SNDRV_PCM_FORMAT_S16_LE) | |
411 | dreamcastcard->channel->sfmt = SM_16BIT; | |
412 | dreamcastcard->channel->freq = substream->runtime->rate; | |
413 | dreamcastcard->substream = substream; | |
414 | return 0; | |
415 | } | |
416 | ||
417 | static int snd_aicapcm_pcm_trigger(struct snd_pcm_substream | |
418 | *substream, int cmd) | |
419 | { | |
198de43d AM |
420 | switch (cmd) { |
421 | case SNDRV_PCM_TRIGGER_START: | |
422 | spu_begin_dma(substream); | |
423 | break; | |
424 | case SNDRV_PCM_TRIGGER_STOP: | |
198de43d AM |
425 | aica_chn_halt(); |
426 | break; | |
427 | default: | |
428 | return -EINVAL; | |
429 | } | |
430 | return 0; | |
431 | } | |
432 | ||
433 | static unsigned long snd_aicapcm_pcm_pointer(struct snd_pcm_substream | |
434 | *substream) | |
435 | { | |
436 | return readl(AICA_CONTROL_CHANNEL_SAMPLE_NUMBER); | |
437 | } | |
438 | ||
439 | static struct snd_pcm_ops snd_aicapcm_playback_ops = { | |
440 | .open = snd_aicapcm_pcm_open, | |
441 | .close = snd_aicapcm_pcm_close, | |
442 | .ioctl = snd_pcm_lib_ioctl, | |
443 | .hw_params = snd_aicapcm_pcm_hw_params, | |
444 | .hw_free = snd_aicapcm_pcm_hw_free, | |
445 | .prepare = snd_aicapcm_pcm_prepare, | |
446 | .trigger = snd_aicapcm_pcm_trigger, | |
447 | .pointer = snd_aicapcm_pcm_pointer, | |
448 | }; | |
449 | ||
450 | /* TO DO: set up to handle more than one pcm instance */ | |
451 | static int __init snd_aicapcmchip(struct snd_card_aica | |
452 | *dreamcastcard, int pcm_index) | |
453 | { | |
454 | struct snd_pcm *pcm; | |
455 | int err; | |
456 | /* AICA has no capture ability */ | |
457 | err = | |
d20b9b20 TI |
458 | snd_pcm_new(dreamcastcard->card, "AICA PCM", pcm_index, 1, 0, |
459 | &pcm); | |
198de43d AM |
460 | if (unlikely(err < 0)) |
461 | return err; | |
462 | pcm->private_data = dreamcastcard; | |
463 | strcpy(pcm->name, "AICA PCM"); | |
464 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, | |
465 | &snd_aicapcm_playback_ops); | |
466 | /* Allocate the DMA buffers */ | |
467 | err = | |
468 | snd_pcm_lib_preallocate_pages_for_all(pcm, | |
469 | SNDRV_DMA_TYPE_CONTINUOUS, | |
470 | snd_dma_continuous_data | |
471 | (GFP_KERNEL), | |
472 | AICA_BUFFER_SIZE, | |
473 | AICA_BUFFER_SIZE); | |
474 | return err; | |
475 | } | |
476 | ||
477 | /* Mixer controls */ | |
a5ce8890 | 478 | #define aica_pcmswitch_info snd_ctl_boolean_mono_info |
198de43d AM |
479 | |
480 | static int aica_pcmswitch_get(struct snd_kcontrol *kcontrol, | |
481 | struct snd_ctl_elem_value *ucontrol) | |
482 | { | |
483 | ucontrol->value.integer.value[0] = 1; /* TO DO: Fix me */ | |
484 | return 0; | |
485 | } | |
486 | ||
487 | static int aica_pcmswitch_put(struct snd_kcontrol *kcontrol, | |
488 | struct snd_ctl_elem_value *ucontrol) | |
489 | { | |
490 | if (ucontrol->value.integer.value[0] == 1) | |
491 | return 0; /* TO DO: Fix me */ | |
492 | else | |
493 | aica_chn_halt(); | |
494 | return 0; | |
495 | } | |
496 | ||
497 | static int aica_pcmvolume_info(struct snd_kcontrol *kcontrol, | |
498 | struct snd_ctl_elem_info *uinfo) | |
499 | { | |
500 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; | |
501 | uinfo->count = 1; | |
502 | uinfo->value.integer.min = 0; | |
503 | uinfo->value.integer.max = 0xFF; | |
504 | return 0; | |
505 | } | |
506 | ||
507 | static int aica_pcmvolume_get(struct snd_kcontrol *kcontrol, | |
508 | struct snd_ctl_elem_value *ucontrol) | |
509 | { | |
510 | struct snd_card_aica *dreamcastcard; | |
511 | dreamcastcard = kcontrol->private_data; | |
512 | if (unlikely(!dreamcastcard->channel)) | |
513 | return -ETXTBSY; /* we've not yet been set up */ | |
514 | ucontrol->value.integer.value[0] = dreamcastcard->channel->vol; | |
515 | return 0; | |
516 | } | |
517 | ||
518 | static int aica_pcmvolume_put(struct snd_kcontrol *kcontrol, | |
519 | struct snd_ctl_elem_value *ucontrol) | |
520 | { | |
521 | struct snd_card_aica *dreamcastcard; | |
3b892467 | 522 | unsigned int vol; |
198de43d AM |
523 | dreamcastcard = kcontrol->private_data; |
524 | if (unlikely(!dreamcastcard->channel)) | |
525 | return -ETXTBSY; | |
3b892467 TI |
526 | vol = ucontrol->value.integer.value[0]; |
527 | if (vol > 0xff) | |
528 | return -EINVAL; | |
529 | if (unlikely(dreamcastcard->channel->vol == vol)) | |
198de43d AM |
530 | return 0; |
531 | dreamcastcard->channel->vol = ucontrol->value.integer.value[0]; | |
532 | dreamcastcard->master_volume = ucontrol->value.integer.value[0]; | |
533 | spu_memload(AICA_CHANNEL0_CONTROL_OFFSET, | |
d20b9b20 | 534 | dreamcastcard->channel, sizeof(struct aica_channel)); |
198de43d AM |
535 | return 1; |
536 | } | |
537 | ||
e74033a8 | 538 | static struct snd_kcontrol_new snd_aica_pcmswitch_control = { |
198de43d AM |
539 | .iface = SNDRV_CTL_ELEM_IFACE_MIXER, |
540 | .name = "PCM Playback Switch", | |
541 | .index = 0, | |
542 | .info = aica_pcmswitch_info, | |
543 | .get = aica_pcmswitch_get, | |
544 | .put = aica_pcmswitch_put | |
545 | }; | |
546 | ||
e74033a8 | 547 | static struct snd_kcontrol_new snd_aica_pcmvolume_control = { |
198de43d AM |
548 | .iface = SNDRV_CTL_ELEM_IFACE_MIXER, |
549 | .name = "PCM Playback Volume", | |
550 | .index = 0, | |
551 | .info = aica_pcmvolume_info, | |
552 | .get = aica_pcmvolume_get, | |
553 | .put = aica_pcmvolume_put | |
554 | }; | |
555 | ||
556 | static int load_aica_firmware(void) | |
557 | { | |
558 | int err; | |
559 | const struct firmware *fw_entry; | |
560 | spu_reset(); | |
561 | err = request_firmware(&fw_entry, "aica_firmware.bin", &pd->dev); | |
562 | if (unlikely(err)) | |
563 | return err; | |
877d0310 | 564 | /* write firmware into memory */ |
198de43d AM |
565 | spu_disable(); |
566 | spu_memload(0, fw_entry->data, fw_entry->size); | |
567 | spu_enable(); | |
568 | release_firmware(fw_entry); | |
569 | return err; | |
570 | } | |
571 | ||
e74033a8 | 572 | static int add_aicamixer_controls(struct snd_card_aica *dreamcastcard) |
198de43d AM |
573 | { |
574 | int err; | |
575 | err = snd_ctl_add | |
576 | (dreamcastcard->card, | |
577 | snd_ctl_new1(&snd_aica_pcmvolume_control, dreamcastcard)); | |
578 | if (unlikely(err < 0)) | |
579 | return err; | |
580 | err = snd_ctl_add | |
581 | (dreamcastcard->card, | |
582 | snd_ctl_new1(&snd_aica_pcmswitch_control, dreamcastcard)); | |
583 | if (unlikely(err < 0)) | |
584 | return err; | |
585 | return 0; | |
586 | } | |
587 | ||
e74033a8 | 588 | static int snd_aica_remove(struct platform_device *devptr) |
198de43d AM |
589 | { |
590 | struct snd_card_aica *dreamcastcard; | |
591 | dreamcastcard = platform_get_drvdata(devptr); | |
592 | if (unlikely(!dreamcastcard)) | |
593 | return -ENODEV; | |
594 | snd_card_free(dreamcastcard->card); | |
595 | kfree(dreamcastcard); | |
198de43d AM |
596 | return 0; |
597 | } | |
598 | ||
e74033a8 | 599 | static int snd_aica_probe(struct platform_device *devptr) |
198de43d AM |
600 | { |
601 | int err; | |
602 | struct snd_card_aica *dreamcastcard; | |
603 | dreamcastcard = kmalloc(sizeof(struct snd_card_aica), GFP_KERNEL); | |
604 | if (unlikely(!dreamcastcard)) | |
605 | return -ENOMEM; | |
e7182ac5 TI |
606 | err = snd_card_new(&devptr->dev, index, SND_AICA_DRIVER, |
607 | THIS_MODULE, 0, &dreamcastcard->card); | |
bd7dd77c | 608 | if (unlikely(err < 0)) { |
198de43d | 609 | kfree(dreamcastcard); |
bd7dd77c | 610 | return err; |
198de43d AM |
611 | } |
612 | strcpy(dreamcastcard->card->driver, "snd_aica"); | |
613 | strcpy(dreamcastcard->card->shortname, SND_AICA_DRIVER); | |
614 | strcpy(dreamcastcard->card->longname, | |
615 | "Yamaha AICA Super Intelligent Sound Processor for SEGA Dreamcast"); | |
d20b9b20 TI |
616 | /* Prepare to use the queue */ |
617 | INIT_WORK(&(dreamcastcard->spu_dma_work), run_spu_dma); | |
198de43d AM |
618 | /* Load the PCM 'chip' */ |
619 | err = snd_aicapcmchip(dreamcastcard, 0); | |
620 | if (unlikely(err < 0)) | |
621 | goto freedreamcast; | |
198de43d AM |
622 | dreamcastcard->timer.data = 0; |
623 | dreamcastcard->channel = NULL; | |
624 | /* Add basic controls */ | |
625 | err = add_aicamixer_controls(dreamcastcard); | |
626 | if (unlikely(err < 0)) | |
627 | goto freedreamcast; | |
628 | /* Register the card with ALSA subsystem */ | |
629 | err = snd_card_register(dreamcastcard->card); | |
630 | if (unlikely(err < 0)) | |
631 | goto freedreamcast; | |
632 | platform_set_drvdata(devptr, dreamcastcard); | |
198de43d AM |
633 | snd_printk |
634 | ("ALSA Driver for Yamaha AICA Super Intelligent Sound Processor\n"); | |
635 | return 0; | |
636 | freedreamcast: | |
637 | snd_card_free(dreamcastcard->card); | |
638 | kfree(dreamcastcard); | |
639 | return err; | |
640 | } | |
641 | ||
642 | static struct platform_driver snd_aica_driver = { | |
643 | .probe = snd_aica_probe, | |
e74033a8 | 644 | .remove = snd_aica_remove, |
198de43d | 645 | .driver = { |
8bf01d8a | 646 | .name = SND_AICA_DRIVER, |
8bf01d8a | 647 | }, |
198de43d AM |
648 | }; |
649 | ||
650 | static int __init aica_init(void) | |
651 | { | |
652 | int err; | |
653 | err = platform_driver_register(&snd_aica_driver); | |
654 | if (unlikely(err < 0)) | |
655 | return err; | |
656 | pd = platform_device_register_simple(SND_AICA_DRIVER, -1, | |
657 | aica_memory_space, 2); | |
801678c5 | 658 | if (IS_ERR(pd)) { |
198de43d AM |
659 | platform_driver_unregister(&snd_aica_driver); |
660 | return PTR_ERR(pd); | |
661 | } | |
662 | /* Load the firmware */ | |
663 | return load_aica_firmware(); | |
664 | } | |
665 | ||
666 | static void __exit aica_exit(void) | |
667 | { | |
198de43d AM |
668 | platform_device_unregister(pd); |
669 | platform_driver_unregister(&snd_aica_driver); | |
670 | /* Kill any sound still playing and reset ARM7 to safe state */ | |
671 | spu_reset(); | |
672 | } | |
673 | ||
674 | module_init(aica_init); | |
675 | module_exit(aica_exit); |