Commit | Line | Data |
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f3d080a2 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
198de43d | 2 | /* |
198de43d AM |
3 | * |
4 | * Copyright Adrian McMenamin 2005, 2006, 2007 | |
5 | * <adrian@mcmen.demon.co.uk> | |
6 | * Requires firmware (BSD licenced) available from: | |
7 | * http://linuxdc.cvs.sourceforge.net/linuxdc/linux-sh-dc/sound/oss/aica/firmware/ | |
8 | * or the maintainer | |
198de43d AM |
9 | */ |
10 | ||
11 | #include <linux/init.h> | |
12 | #include <linux/jiffies.h> | |
13 | #include <linux/slab.h> | |
14 | #include <linux/time.h> | |
15 | #include <linux/wait.h> | |
65a77217 | 16 | #include <linux/module.h> |
198de43d AM |
17 | #include <linux/platform_device.h> |
18 | #include <linux/firmware.h> | |
19 | #include <linux/timer.h> | |
20 | #include <linux/delay.h> | |
21 | #include <linux/workqueue.h> | |
6cbbfe1c | 22 | #include <linux/io.h> |
198de43d AM |
23 | #include <sound/core.h> |
24 | #include <sound/control.h> | |
25 | #include <sound/pcm.h> | |
26 | #include <sound/initval.h> | |
27 | #include <sound/info.h> | |
198de43d | 28 | #include <asm/dma.h> |
f15cbe6f | 29 | #include <mach/sysasic.h> |
198de43d AM |
30 | #include "aica.h" |
31 | ||
32 | MODULE_AUTHOR("Adrian McMenamin <adrian@mcmen.demon.co.uk>"); | |
33 | MODULE_DESCRIPTION("Dreamcast AICA sound (pcm) driver"); | |
34 | MODULE_LICENSE("GPL"); | |
f37325a9 | 35 | MODULE_FIRMWARE("aica_firmware.bin"); |
198de43d AM |
36 | |
37 | /* module parameters */ | |
38 | #define CARD_NAME "AICA" | |
39 | static int index = -1; | |
40 | static char *id; | |
a67ff6a5 | 41 | static bool enable = 1; |
198de43d AM |
42 | module_param(index, int, 0444); |
43 | MODULE_PARM_DESC(index, "Index value for " CARD_NAME " soundcard."); | |
44 | module_param(id, charp, 0444); | |
45 | MODULE_PARM_DESC(id, "ID string for " CARD_NAME " soundcard."); | |
46 | module_param(enable, bool, 0644); | |
47 | MODULE_PARM_DESC(enable, "Enable " CARD_NAME " soundcard."); | |
48 | ||
198de43d AM |
49 | /* Simple platform device */ |
50 | static struct platform_device *pd; | |
51 | static struct resource aica_memory_space[2] = { | |
52 | { | |
53 | .name = "AICA ARM CONTROL", | |
54 | .start = ARM_RESET_REGISTER, | |
55 | .flags = IORESOURCE_MEM, | |
56 | .end = ARM_RESET_REGISTER + 3, | |
57 | }, | |
58 | { | |
59 | .name = "AICA Sound RAM", | |
60 | .start = SPU_MEMORY_BASE, | |
61 | .flags = IORESOURCE_MEM, | |
62 | .end = SPU_MEMORY_BASE + 0x200000 - 1, | |
63 | }, | |
64 | }; | |
65 | ||
66 | /* SPU specific functions */ | |
67 | /* spu_write_wait - wait for G2-SH FIFO to clear */ | |
68 | static void spu_write_wait(void) | |
69 | { | |
70 | int time_count; | |
71 | time_count = 0; | |
72 | while (1) { | |
73 | if (!(readl(G2_FIFO) & 0x11)) | |
74 | break; | |
75 | /* To ensure hardware failure doesn't wedge kernel */ | |
76 | time_count++; | |
d20b9b20 TI |
77 | if (time_count > 0x10000) { |
78 | snd_printk | |
79 | ("WARNING: G2 FIFO appears to be blocked.\n"); | |
198de43d AM |
80 | break; |
81 | } | |
82 | } | |
83 | } | |
84 | ||
85 | /* spu_memset - write to memory in SPU address space */ | |
86 | static void spu_memset(u32 toi, u32 what, int length) | |
87 | { | |
88 | int i; | |
44e0b682 | 89 | unsigned long flags; |
5e246b85 TI |
90 | if (snd_BUG_ON(length % 4)) |
91 | return; | |
198de43d AM |
92 | for (i = 0; i < length; i++) { |
93 | if (!(i % 8)) | |
94 | spu_write_wait(); | |
44e0b682 | 95 | local_irq_save(flags); |
198de43d | 96 | writel(what, toi + SPU_MEMORY_BASE); |
44e0b682 | 97 | local_irq_restore(flags); |
198de43d AM |
98 | toi++; |
99 | } | |
100 | } | |
101 | ||
102 | /* spu_memload - write to SPU address space */ | |
f1dd4795 | 103 | static void spu_memload(u32 toi, const void *from, int length) |
198de43d | 104 | { |
44e0b682 | 105 | unsigned long flags; |
f1dd4795 | 106 | const u32 *froml = from; |
198de43d AM |
107 | u32 __iomem *to = (u32 __iomem *) (SPU_MEMORY_BASE + toi); |
108 | int i; | |
109 | u32 val; | |
110 | length = DIV_ROUND_UP(length, 4); | |
111 | spu_write_wait(); | |
112 | for (i = 0; i < length; i++) { | |
113 | if (!(i % 8)) | |
114 | spu_write_wait(); | |
115 | val = *froml; | |
44e0b682 | 116 | local_irq_save(flags); |
198de43d | 117 | writel(val, to); |
44e0b682 | 118 | local_irq_restore(flags); |
198de43d AM |
119 | froml++; |
120 | to++; | |
121 | } | |
122 | } | |
123 | ||
124 | /* spu_disable - set spu registers to stop sound output */ | |
125 | static void spu_disable(void) | |
126 | { | |
127 | int i; | |
44e0b682 | 128 | unsigned long flags; |
198de43d AM |
129 | u32 regval; |
130 | spu_write_wait(); | |
131 | regval = readl(ARM_RESET_REGISTER); | |
132 | regval |= 1; | |
133 | spu_write_wait(); | |
44e0b682 | 134 | local_irq_save(flags); |
198de43d | 135 | writel(regval, ARM_RESET_REGISTER); |
44e0b682 | 136 | local_irq_restore(flags); |
198de43d AM |
137 | for (i = 0; i < 64; i++) { |
138 | spu_write_wait(); | |
139 | regval = readl(SPU_REGISTER_BASE + (i * 0x80)); | |
140 | regval = (regval & ~0x4000) | 0x8000; | |
141 | spu_write_wait(); | |
44e0b682 | 142 | local_irq_save(flags); |
198de43d | 143 | writel(regval, SPU_REGISTER_BASE + (i * 0x80)); |
44e0b682 | 144 | local_irq_restore(flags); |
198de43d AM |
145 | } |
146 | } | |
147 | ||
148 | /* spu_enable - set spu registers to enable sound output */ | |
149 | static void spu_enable(void) | |
150 | { | |
44e0b682 | 151 | unsigned long flags; |
198de43d AM |
152 | u32 regval = readl(ARM_RESET_REGISTER); |
153 | regval &= ~1; | |
154 | spu_write_wait(); | |
44e0b682 | 155 | local_irq_save(flags); |
198de43d | 156 | writel(regval, ARM_RESET_REGISTER); |
44e0b682 | 157 | local_irq_restore(flags); |
198de43d AM |
158 | } |
159 | ||
160 | /* | |
161 | * Halt the sound processor, clear the memory, | |
162 | * load some default ARM7 code, and then restart ARM7 | |
163 | */ | |
164 | static void spu_reset(void) | |
165 | { | |
44e0b682 | 166 | unsigned long flags; |
198de43d AM |
167 | spu_disable(); |
168 | spu_memset(0, 0, 0x200000 / 4); | |
169 | /* Put ARM7 in endless loop */ | |
44e0b682 | 170 | local_irq_save(flags); |
48ccb2ce | 171 | __raw_writel(0xea000002, SPU_MEMORY_BASE); |
44e0b682 | 172 | local_irq_restore(flags); |
198de43d AM |
173 | spu_enable(); |
174 | } | |
175 | ||
176 | /* aica_chn_start - write to spu to start playback */ | |
177 | static void aica_chn_start(void) | |
178 | { | |
44e0b682 | 179 | unsigned long flags; |
198de43d | 180 | spu_write_wait(); |
44e0b682 | 181 | local_irq_save(flags); |
198de43d | 182 | writel(AICA_CMD_KICK | AICA_CMD_START, (u32 *) AICA_CONTROL_POINT); |
44e0b682 | 183 | local_irq_restore(flags); |
198de43d AM |
184 | } |
185 | ||
186 | /* aica_chn_halt - write to spu to halt playback */ | |
187 | static void aica_chn_halt(void) | |
188 | { | |
44e0b682 | 189 | unsigned long flags; |
198de43d | 190 | spu_write_wait(); |
44e0b682 | 191 | local_irq_save(flags); |
198de43d | 192 | writel(AICA_CMD_KICK | AICA_CMD_STOP, (u32 *) AICA_CONTROL_POINT); |
44e0b682 | 193 | local_irq_restore(flags); |
198de43d AM |
194 | } |
195 | ||
196 | /* ALSA code below */ | |
cd196fe2 | 197 | static const struct snd_pcm_hardware snd_pcm_aica_playback_hw = { |
198de43d AM |
198 | .info = (SNDRV_PCM_INFO_NONINTERLEAVED), |
199 | .formats = | |
200 | (SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_S16_LE | | |
201 | SNDRV_PCM_FMTBIT_IMA_ADPCM), | |
202 | .rates = SNDRV_PCM_RATE_8000_48000, | |
203 | .rate_min = 8000, | |
204 | .rate_max = 48000, | |
205 | .channels_min = 1, | |
206 | .channels_max = 2, | |
207 | .buffer_bytes_max = AICA_BUFFER_SIZE, | |
208 | .period_bytes_min = AICA_PERIOD_SIZE, | |
209 | .period_bytes_max = AICA_PERIOD_SIZE, | |
210 | .periods_min = AICA_PERIOD_NUMBER, | |
211 | .periods_max = AICA_PERIOD_NUMBER, | |
212 | }; | |
213 | ||
214 | static int aica_dma_transfer(int channels, int buffer_size, | |
215 | struct snd_pcm_substream *substream) | |
216 | { | |
217 | int q, err, period_offset; | |
218 | struct snd_card_aica *dreamcastcard; | |
219 | struct snd_pcm_runtime *runtime; | |
44e0b682 | 220 | unsigned long flags; |
ceac4bf3 | 221 | err = 0; |
198de43d AM |
222 | dreamcastcard = substream->pcm->private_data; |
223 | period_offset = dreamcastcard->clicks; | |
224 | period_offset %= (AICA_PERIOD_NUMBER / channels); | |
225 | runtime = substream->runtime; | |
226 | for (q = 0; q < channels; q++) { | |
44e0b682 | 227 | local_irq_save(flags); |
198de43d | 228 | err = dma_xfer(AICA_DMA_CHANNEL, |
d20b9b20 TI |
229 | (unsigned long) (runtime->dma_area + |
230 | (AICA_BUFFER_SIZE * q) / | |
231 | channels + | |
232 | AICA_PERIOD_SIZE * | |
233 | period_offset), | |
198de43d AM |
234 | AICA_CHANNEL0_OFFSET + q * CHANNEL_OFFSET + |
235 | AICA_PERIOD_SIZE * period_offset, | |
236 | buffer_size / channels, AICA_DMA_MODE); | |
44e0b682 AM |
237 | if (unlikely(err < 0)) { |
238 | local_irq_restore(flags); | |
198de43d | 239 | break; |
44e0b682 | 240 | } |
198de43d | 241 | dma_wait_for_completion(AICA_DMA_CHANNEL); |
44e0b682 | 242 | local_irq_restore(flags); |
198de43d AM |
243 | } |
244 | return err; | |
245 | } | |
246 | ||
247 | static void startup_aica(struct snd_card_aica *dreamcastcard) | |
248 | { | |
249 | spu_memload(AICA_CHANNEL0_CONTROL_OFFSET, | |
d20b9b20 | 250 | dreamcastcard->channel, sizeof(struct aica_channel)); |
198de43d AM |
251 | aica_chn_start(); |
252 | } | |
253 | ||
254 | static void run_spu_dma(struct work_struct *work) | |
255 | { | |
256 | int buffer_size; | |
198de43d AM |
257 | struct snd_pcm_runtime *runtime; |
258 | struct snd_card_aica *dreamcastcard; | |
d20b9b20 TI |
259 | dreamcastcard = |
260 | container_of(work, struct snd_card_aica, spu_dma_work); | |
261 | runtime = dreamcastcard->substream->runtime; | |
198de43d | 262 | if (unlikely(dreamcastcard->dma_check == 0)) { |
d20b9b20 TI |
263 | buffer_size = |
264 | frames_to_bytes(runtime, runtime->buffer_size); | |
198de43d AM |
265 | if (runtime->channels > 1) |
266 | dreamcastcard->channel->flags |= 0x01; | |
d20b9b20 TI |
267 | aica_dma_transfer(runtime->channels, buffer_size, |
268 | dreamcastcard->substream); | |
198de43d AM |
269 | startup_aica(dreamcastcard); |
270 | dreamcastcard->clicks = | |
271 | buffer_size / (AICA_PERIOD_SIZE * runtime->channels); | |
272 | return; | |
273 | } else { | |
274 | aica_dma_transfer(runtime->channels, | |
275 | AICA_PERIOD_SIZE * runtime->channels, | |
d20b9b20 | 276 | dreamcastcard->substream); |
198de43d AM |
277 | snd_pcm_period_elapsed(dreamcastcard->substream); |
278 | dreamcastcard->clicks++; | |
279 | if (unlikely(dreamcastcard->clicks >= AICA_PERIOD_NUMBER)) | |
198de43d | 280 | dreamcastcard->clicks %= AICA_PERIOD_NUMBER; |
198de43d AM |
281 | mod_timer(&dreamcastcard->timer, jiffies + 1); |
282 | } | |
283 | } | |
284 | ||
d522bb6a | 285 | static void aica_period_elapsed(struct timer_list *t) |
198de43d | 286 | { |
d522bb6a KC |
287 | struct snd_card_aica *dreamcastcard = from_timer(dreamcastcard, |
288 | t, timer); | |
534420c6 | 289 | struct snd_pcm_substream *substream = dreamcastcard->substream; |
198de43d AM |
290 | /*timer function - so cannot sleep */ |
291 | int play_period; | |
292 | struct snd_pcm_runtime *runtime; | |
198de43d AM |
293 | runtime = substream->runtime; |
294 | dreamcastcard = substream->pcm->private_data; | |
295 | /* Have we played out an additional period? */ | |
296 | play_period = | |
297 | frames_to_bytes(runtime, | |
298 | readl | |
299 | (AICA_CONTROL_CHANNEL_SAMPLE_NUMBER)) / | |
300 | AICA_PERIOD_SIZE; | |
301 | if (play_period == dreamcastcard->current_period) { | |
302 | /* reschedule the timer */ | |
303 | mod_timer(&(dreamcastcard->timer), jiffies + 1); | |
304 | return; | |
305 | } | |
306 | if (runtime->channels > 1) | |
307 | dreamcastcard->current_period = play_period; | |
308 | if (unlikely(dreamcastcard->dma_check == 0)) | |
309 | dreamcastcard->dma_check = 1; | |
43aa56d9 | 310 | schedule_work(&(dreamcastcard->spu_dma_work)); |
198de43d AM |
311 | } |
312 | ||
313 | static void spu_begin_dma(struct snd_pcm_substream *substream) | |
314 | { | |
198de43d AM |
315 | struct snd_card_aica *dreamcastcard; |
316 | struct snd_pcm_runtime *runtime; | |
317 | runtime = substream->runtime; | |
318 | dreamcastcard = substream->pcm->private_data; | |
d20b9b20 | 319 | /*get the queue to do the work */ |
43aa56d9 | 320 | schedule_work(&(dreamcastcard->spu_dma_work)); |
da1a3924 | 321 | mod_timer(&dreamcastcard->timer, jiffies + 4); |
198de43d AM |
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; | |
43aa56d9 | 357 | flush_work(&(dreamcastcard->spu_dma_work)); |
534420c6 TI |
358 | del_timer(&dreamcastcard->timer); |
359 | dreamcastcard->substream = NULL; | |
198de43d AM |
360 | kfree(dreamcastcard->channel); |
361 | spu_disable(); | |
362 | return 0; | |
363 | } | |
364 | ||
198de43d AM |
365 | static int snd_aicapcm_pcm_prepare(struct snd_pcm_substream |
366 | *substream) | |
367 | { | |
368 | struct snd_card_aica *dreamcastcard = substream->pcm->private_data; | |
369 | if ((substream->runtime)->format == SNDRV_PCM_FORMAT_S16_LE) | |
370 | dreamcastcard->channel->sfmt = SM_16BIT; | |
371 | dreamcastcard->channel->freq = substream->runtime->rate; | |
372 | dreamcastcard->substream = substream; | |
373 | return 0; | |
374 | } | |
375 | ||
376 | static int snd_aicapcm_pcm_trigger(struct snd_pcm_substream | |
377 | *substream, int cmd) | |
378 | { | |
198de43d AM |
379 | switch (cmd) { |
380 | case SNDRV_PCM_TRIGGER_START: | |
381 | spu_begin_dma(substream); | |
382 | break; | |
383 | case SNDRV_PCM_TRIGGER_STOP: | |
198de43d AM |
384 | aica_chn_halt(); |
385 | break; | |
386 | default: | |
387 | return -EINVAL; | |
388 | } | |
389 | return 0; | |
390 | } | |
391 | ||
392 | static unsigned long snd_aicapcm_pcm_pointer(struct snd_pcm_substream | |
393 | *substream) | |
394 | { | |
395 | return readl(AICA_CONTROL_CHANNEL_SAMPLE_NUMBER); | |
396 | } | |
397 | ||
46a085a3 | 398 | static const struct snd_pcm_ops snd_aicapcm_playback_ops = { |
198de43d AM |
399 | .open = snd_aicapcm_pcm_open, |
400 | .close = snd_aicapcm_pcm_close, | |
198de43d AM |
401 | .prepare = snd_aicapcm_pcm_prepare, |
402 | .trigger = snd_aicapcm_pcm_trigger, | |
403 | .pointer = snd_aicapcm_pcm_pointer, | |
404 | }; | |
405 | ||
406 | /* TO DO: set up to handle more than one pcm instance */ | |
407 | static int __init snd_aicapcmchip(struct snd_card_aica | |
408 | *dreamcastcard, int pcm_index) | |
409 | { | |
410 | struct snd_pcm *pcm; | |
411 | int err; | |
412 | /* AICA has no capture ability */ | |
413 | err = | |
d20b9b20 TI |
414 | snd_pcm_new(dreamcastcard->card, "AICA PCM", pcm_index, 1, 0, |
415 | &pcm); | |
198de43d AM |
416 | if (unlikely(err < 0)) |
417 | return err; | |
418 | pcm->private_data = dreamcastcard; | |
419 | strcpy(pcm->name, "AICA PCM"); | |
420 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, | |
421 | &snd_aicapcm_playback_ops); | |
422 | /* Allocate the DMA buffers */ | |
403d026c TI |
423 | snd_pcm_set_managed_buffer_all(pcm, |
424 | SNDRV_DMA_TYPE_CONTINUOUS, | |
425 | NULL, | |
426 | AICA_BUFFER_SIZE, | |
427 | AICA_BUFFER_SIZE); | |
2462bca0 | 428 | return 0; |
198de43d AM |
429 | } |
430 | ||
431 | /* Mixer controls */ | |
a5ce8890 | 432 | #define aica_pcmswitch_info snd_ctl_boolean_mono_info |
198de43d AM |
433 | |
434 | static int aica_pcmswitch_get(struct snd_kcontrol *kcontrol, | |
435 | struct snd_ctl_elem_value *ucontrol) | |
436 | { | |
437 | ucontrol->value.integer.value[0] = 1; /* TO DO: Fix me */ | |
438 | return 0; | |
439 | } | |
440 | ||
441 | static int aica_pcmswitch_put(struct snd_kcontrol *kcontrol, | |
442 | struct snd_ctl_elem_value *ucontrol) | |
443 | { | |
444 | if (ucontrol->value.integer.value[0] == 1) | |
445 | return 0; /* TO DO: Fix me */ | |
446 | else | |
447 | aica_chn_halt(); | |
448 | return 0; | |
449 | } | |
450 | ||
451 | static int aica_pcmvolume_info(struct snd_kcontrol *kcontrol, | |
452 | struct snd_ctl_elem_info *uinfo) | |
453 | { | |
454 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; | |
455 | uinfo->count = 1; | |
456 | uinfo->value.integer.min = 0; | |
457 | uinfo->value.integer.max = 0xFF; | |
458 | return 0; | |
459 | } | |
460 | ||
461 | static int aica_pcmvolume_get(struct snd_kcontrol *kcontrol, | |
462 | struct snd_ctl_elem_value *ucontrol) | |
463 | { | |
464 | struct snd_card_aica *dreamcastcard; | |
465 | dreamcastcard = kcontrol->private_data; | |
466 | if (unlikely(!dreamcastcard->channel)) | |
467 | return -ETXTBSY; /* we've not yet been set up */ | |
468 | ucontrol->value.integer.value[0] = dreamcastcard->channel->vol; | |
469 | return 0; | |
470 | } | |
471 | ||
472 | static int aica_pcmvolume_put(struct snd_kcontrol *kcontrol, | |
473 | struct snd_ctl_elem_value *ucontrol) | |
474 | { | |
475 | struct snd_card_aica *dreamcastcard; | |
3b892467 | 476 | unsigned int vol; |
198de43d AM |
477 | dreamcastcard = kcontrol->private_data; |
478 | if (unlikely(!dreamcastcard->channel)) | |
479 | return -ETXTBSY; | |
3b892467 TI |
480 | vol = ucontrol->value.integer.value[0]; |
481 | if (vol > 0xff) | |
482 | return -EINVAL; | |
483 | if (unlikely(dreamcastcard->channel->vol == vol)) | |
198de43d AM |
484 | return 0; |
485 | dreamcastcard->channel->vol = ucontrol->value.integer.value[0]; | |
486 | dreamcastcard->master_volume = ucontrol->value.integer.value[0]; | |
487 | spu_memload(AICA_CHANNEL0_CONTROL_OFFSET, | |
d20b9b20 | 488 | dreamcastcard->channel, sizeof(struct aica_channel)); |
198de43d AM |
489 | return 1; |
490 | } | |
491 | ||
905e46ac | 492 | static const struct snd_kcontrol_new snd_aica_pcmswitch_control = { |
198de43d AM |
493 | .iface = SNDRV_CTL_ELEM_IFACE_MIXER, |
494 | .name = "PCM Playback Switch", | |
495 | .index = 0, | |
496 | .info = aica_pcmswitch_info, | |
497 | .get = aica_pcmswitch_get, | |
498 | .put = aica_pcmswitch_put | |
499 | }; | |
500 | ||
905e46ac | 501 | static const struct snd_kcontrol_new snd_aica_pcmvolume_control = { |
198de43d AM |
502 | .iface = SNDRV_CTL_ELEM_IFACE_MIXER, |
503 | .name = "PCM Playback Volume", | |
504 | .index = 0, | |
505 | .info = aica_pcmvolume_info, | |
506 | .get = aica_pcmvolume_get, | |
507 | .put = aica_pcmvolume_put | |
508 | }; | |
509 | ||
510 | static int load_aica_firmware(void) | |
511 | { | |
512 | int err; | |
513 | const struct firmware *fw_entry; | |
514 | spu_reset(); | |
515 | err = request_firmware(&fw_entry, "aica_firmware.bin", &pd->dev); | |
516 | if (unlikely(err)) | |
517 | return err; | |
877d0310 | 518 | /* write firmware into memory */ |
198de43d AM |
519 | spu_disable(); |
520 | spu_memload(0, fw_entry->data, fw_entry->size); | |
521 | spu_enable(); | |
522 | release_firmware(fw_entry); | |
523 | return err; | |
524 | } | |
525 | ||
e74033a8 | 526 | static int add_aicamixer_controls(struct snd_card_aica *dreamcastcard) |
198de43d AM |
527 | { |
528 | int err; | |
529 | err = snd_ctl_add | |
530 | (dreamcastcard->card, | |
531 | snd_ctl_new1(&snd_aica_pcmvolume_control, dreamcastcard)); | |
532 | if (unlikely(err < 0)) | |
533 | return err; | |
534 | err = snd_ctl_add | |
535 | (dreamcastcard->card, | |
536 | snd_ctl_new1(&snd_aica_pcmswitch_control, dreamcastcard)); | |
537 | if (unlikely(err < 0)) | |
538 | return err; | |
539 | return 0; | |
540 | } | |
541 | ||
de0f49b8 | 542 | static void snd_aica_remove(struct platform_device *devptr) |
198de43d AM |
543 | { |
544 | struct snd_card_aica *dreamcastcard; | |
545 | dreamcastcard = platform_get_drvdata(devptr); | |
198de43d AM |
546 | snd_card_free(dreamcastcard->card); |
547 | kfree(dreamcastcard); | |
198de43d AM |
548 | } |
549 | ||
e74033a8 | 550 | static int snd_aica_probe(struct platform_device *devptr) |
198de43d AM |
551 | { |
552 | int err; | |
553 | struct snd_card_aica *dreamcastcard; | |
d522bb6a | 554 | dreamcastcard = kzalloc(sizeof(struct snd_card_aica), GFP_KERNEL); |
198de43d AM |
555 | if (unlikely(!dreamcastcard)) |
556 | return -ENOMEM; | |
e7182ac5 TI |
557 | err = snd_card_new(&devptr->dev, index, SND_AICA_DRIVER, |
558 | THIS_MODULE, 0, &dreamcastcard->card); | |
bd7dd77c | 559 | if (unlikely(err < 0)) { |
198de43d | 560 | kfree(dreamcastcard); |
bd7dd77c | 561 | return err; |
198de43d AM |
562 | } |
563 | strcpy(dreamcastcard->card->driver, "snd_aica"); | |
564 | strcpy(dreamcastcard->card->shortname, SND_AICA_DRIVER); | |
565 | strcpy(dreamcastcard->card->longname, | |
566 | "Yamaha AICA Super Intelligent Sound Processor for SEGA Dreamcast"); | |
d20b9b20 TI |
567 | /* Prepare to use the queue */ |
568 | INIT_WORK(&(dreamcastcard->spu_dma_work), run_spu_dma); | |
534420c6 | 569 | timer_setup(&dreamcastcard->timer, aica_period_elapsed, 0); |
198de43d AM |
570 | /* Load the PCM 'chip' */ |
571 | err = snd_aicapcmchip(dreamcastcard, 0); | |
572 | if (unlikely(err < 0)) | |
573 | goto freedreamcast; | |
198de43d AM |
574 | /* Add basic controls */ |
575 | err = add_aicamixer_controls(dreamcastcard); | |
576 | if (unlikely(err < 0)) | |
577 | goto freedreamcast; | |
578 | /* Register the card with ALSA subsystem */ | |
579 | err = snd_card_register(dreamcastcard->card); | |
580 | if (unlikely(err < 0)) | |
581 | goto freedreamcast; | |
582 | platform_set_drvdata(devptr, dreamcastcard); | |
198de43d AM |
583 | snd_printk |
584 | ("ALSA Driver for Yamaha AICA Super Intelligent Sound Processor\n"); | |
585 | return 0; | |
586 | freedreamcast: | |
587 | snd_card_free(dreamcastcard->card); | |
588 | kfree(dreamcastcard); | |
589 | return err; | |
590 | } | |
591 | ||
592 | static struct platform_driver snd_aica_driver = { | |
593 | .probe = snd_aica_probe, | |
de0f49b8 | 594 | .remove_new = snd_aica_remove, |
198de43d | 595 | .driver = { |
8bf01d8a | 596 | .name = SND_AICA_DRIVER, |
8bf01d8a | 597 | }, |
198de43d AM |
598 | }; |
599 | ||
600 | static int __init aica_init(void) | |
601 | { | |
602 | int err; | |
603 | err = platform_driver_register(&snd_aica_driver); | |
604 | if (unlikely(err < 0)) | |
605 | return err; | |
606 | pd = platform_device_register_simple(SND_AICA_DRIVER, -1, | |
607 | aica_memory_space, 2); | |
801678c5 | 608 | if (IS_ERR(pd)) { |
198de43d AM |
609 | platform_driver_unregister(&snd_aica_driver); |
610 | return PTR_ERR(pd); | |
611 | } | |
612 | /* Load the firmware */ | |
613 | return load_aica_firmware(); | |
614 | } | |
615 | ||
616 | static void __exit aica_exit(void) | |
617 | { | |
198de43d AM |
618 | platform_device_unregister(pd); |
619 | platform_driver_unregister(&snd_aica_driver); | |
620 | /* Kill any sound still playing and reset ARM7 to safe state */ | |
621 | spu_reset(); | |
622 | } | |
623 | ||
624 | module_init(aica_init); | |
625 | module_exit(aica_exit); |