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[linux-2.6/next.git] / sound / soc / sh / siu_dai.c
blobeeed5edd722b2df38e4449f8b8e78d815c4fbcfd
1 /*
2 * siu_dai.c - ALSA SoC driver for Renesas SH7343, SH7722 SIU peripheral.
3 *
4 * Copyright (C) 2009-2010 Guennadi Liakhovetski <g.liakhovetski@gmx.de>
5 * Copyright (C) 2006 Carlos Munoz <carlos@kenati.com>
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 */
21
22 #include <linux/delay.h>
23 #include <linux/firmware.h>
24 #include <linux/pm_runtime.h>
25 #include <linux/slab.h>
26
27 #include <asm/clock.h>
28 #include <asm/siu.h>
29
30 #include <sound/control.h>
31 #include <sound/soc-dai.h>
32
33 #include "siu.h"
34
35 /* Board specifics */
36 #if defined(CONFIG_CPU_SUBTYPE_SH7722)
37 # define SIU_MAX_VOLUME 0x1000
38 #else
39 # define SIU_MAX_VOLUME 0x7fff
40 #endif
41
42 #define PRAM_SIZE 0x2000
43 #define XRAM_SIZE 0x800
44 #define YRAM_SIZE 0x800
45
46 #define XRAM_OFFSET 0x4000
47 #define YRAM_OFFSET 0x6000
48 #define REG_OFFSET 0xc000
49
50 #define PLAYBACK_ENABLED 1
51 #define CAPTURE_ENABLED 2
52
53 #define VOLUME_CAPTURE 0
54 #define VOLUME_PLAYBACK 1
55 #define DFLT_VOLUME_LEVEL 0x08000800
56
57 /*
58 * SPDIF is only available on port A and on some SIU implementations it is only
59 * available for input. Due to the lack of hardware to test it, SPDIF is left
60 * disabled in this driver version
61 */
62 struct format_flag {
63 u32 i2s;
64 u32 pcm;
65 u32 spdif;
66 u32 mask;
67 };
68
69 struct port_flag {
70 struct format_flag playback;
71 struct format_flag capture;
72 };
73
74 static struct port_flag siu_flags[SIU_PORT_NUM] = {
75 [SIU_PORT_A] = {
76 .playback = {
77 .i2s = 0x50000000,
78 .pcm = 0x40000000,
79 .spdif = 0x80000000, /* not on all SIU versions */
80 .mask = 0xd0000000,
81 },
82 .capture = {
83 .i2s = 0x05000000,
84 .pcm = 0x04000000,
85 .spdif = 0x08000000,
86 .mask = 0x0d000000,
87 },
88 },
89 [SIU_PORT_B] = {
90 .playback = {
91 .i2s = 0x00500000,
92 .pcm = 0x00400000,
93 .spdif = 0, /* impossible - turn off */
94 .mask = 0x00500000,
95 },
96 .capture = {
97 .i2s = 0x00050000,
98 .pcm = 0x00040000,
99 .spdif = 0, /* impossible - turn off */
100 .mask = 0x00050000,
101 },
102 },
103 };
104
105 static void siu_dai_start(struct siu_port *port_info)
106 {
107 struct siu_info *info = siu_i2s_dai.private_data;
108 u32 __iomem *base = info->reg;
109
110 dev_dbg(port_info->pcm->card->dev, "%s\n", __func__);
111
112 /* Turn on SIU clock */
113 pm_runtime_get_sync(siu_i2s_dai.dev);
114
115 /* Issue software reset to siu */
116 siu_write32(base + SIU_SRCTL, 0);
117
118 /* Wait for the reset to take effect */
119 udelay(1);
120
121 port_info->stfifo = 0;
122 port_info->trdat = 0;
123
124 /* portA, portB, SIU operate */
125 siu_write32(base + SIU_SRCTL, 0x301);
126
127 /* portA=256fs, portB=256fs */
128 siu_write32(base + SIU_CKCTL, 0x40400000);
129
130 /* portA's BRG does not divide SIUCKA */
131 siu_write32(base + SIU_BRGASEL, 0);
132 siu_write32(base + SIU_BRRA, 0);
133
134 /* portB's BRG divides SIUCKB by half */
135 siu_write32(base + SIU_BRGBSEL, 1);
136 siu_write32(base + SIU_BRRB, 0);
137
138 siu_write32(base + SIU_IFCTL, 0x44440000);
139
140 /* portA: 32 bit/fs, master; portB: 32 bit/fs, master */
141 siu_write32(base + SIU_SFORM, 0x0c0c0000);
142
143 /*
144 * Volume levels: looks like the DSP firmware implements volume controls
145 * differently from what's described in the datasheet
146 */
147 siu_write32(base + SIU_SBDVCA, port_info->playback.volume);
148 siu_write32(base + SIU_SBDVCB, port_info->capture.volume);
149 }
150
151 static void siu_dai_stop(void)
152 {
153 struct siu_info *info = siu_i2s_dai.private_data;
154 u32 __iomem *base = info->reg;
155
156 /* SIU software reset */
157 siu_write32(base + SIU_SRCTL, 0);
158
159 /* Turn off SIU clock */
160 pm_runtime_put_sync(siu_i2s_dai.dev);
161 }
162
163 static void siu_dai_spbAselect(struct siu_port *port_info)
164 {
165 struct siu_info *info = siu_i2s_dai.private_data;
166 struct siu_firmware *fw = &info->fw;
167 u32 *ydef = fw->yram0;
168 u32 idx;
169
170 /* path A use */
171 if (!info->port_id)
172 idx = 1; /* portA */
173 else
174 idx = 2; /* portB */
175
176 ydef[0] = (fw->spbpar[idx].ab1a << 16) |
177 (fw->spbpar[idx].ab0a << 8) |
178 (fw->spbpar[idx].dir << 7) | 3;
179 ydef[1] = fw->yram0[1]; /* 0x03000300 */
180 ydef[2] = (16 / 2) << 24;
181 ydef[3] = fw->yram0[3]; /* 0 */
182 ydef[4] = fw->yram0[4]; /* 0 */
183 ydef[7] = fw->spbpar[idx].event;
184 port_info->stfifo |= fw->spbpar[idx].stfifo;
185 port_info->trdat |= fw->spbpar[idx].trdat;
186 }
187
188 static void siu_dai_spbBselect(struct siu_port *port_info)
189 {
190 struct siu_info *info = siu_i2s_dai.private_data;
191 struct siu_firmware *fw = &info->fw;
192 u32 *ydef = fw->yram0;
193 u32 idx;
194
195 /* path B use */
196 if (!info->port_id)
197 idx = 7; /* portA */
198 else
199 idx = 8; /* portB */
200
201 ydef[5] = (fw->spbpar[idx].ab1a << 16) |
202 (fw->spbpar[idx].ab0a << 8) | 1;
203 ydef[6] = fw->spbpar[idx].event;
204 port_info->stfifo |= fw->spbpar[idx].stfifo;
205 port_info->trdat |= fw->spbpar[idx].trdat;
206 }
207
208 static void siu_dai_open(struct siu_stream *siu_stream)
209 {
210 struct siu_info *info = siu_i2s_dai.private_data;
211 u32 __iomem *base = info->reg;
212 u32 srctl, ifctl;
213
214 srctl = siu_read32(base + SIU_SRCTL);
215 ifctl = siu_read32(base + SIU_IFCTL);
216
217 switch (info->port_id) {
218 case SIU_PORT_A:
219 /* portA operates */
220 srctl |= 0x200;
221 ifctl &= ~0xc2;
222 break;
223 case SIU_PORT_B:
224 /* portB operates */
225 srctl |= 0x100;
226 ifctl &= ~0x31;
227 break;
228 }
229
230 siu_write32(base + SIU_SRCTL, srctl);
231 /* Unmute and configure portA */
232 siu_write32(base + SIU_IFCTL, ifctl);
233 }
234
235 /*
236 * At the moment only fixed Left-upper, Left-lower, Right-upper, Right-lower
237 * packing is supported
238 */
239 static void siu_dai_pcmdatapack(struct siu_stream *siu_stream)
240 {
241 struct siu_info *info = siu_i2s_dai.private_data;
242 u32 __iomem *base = info->reg;
243 u32 dpak;
244
245 dpak = siu_read32(base + SIU_DPAK);
246
247 switch (info->port_id) {
248 case SIU_PORT_A:
249 dpak &= ~0xc0000000;
250 break;
251 case SIU_PORT_B:
252 dpak &= ~0x00c00000;
253 break;
254 }
255
256 siu_write32(base + SIU_DPAK, dpak);
257 }
258
259 static int siu_dai_spbstart(struct siu_port *port_info)
260 {
261 struct siu_info *info = siu_i2s_dai.private_data;
262 u32 __iomem *base = info->reg;
263 struct siu_firmware *fw = &info->fw;
264 u32 *ydef = fw->yram0;
265 int cnt;
266 u32 __iomem *add;
267 u32 *ptr;
268
269 /* Load SPB Program in PRAM */
270 ptr = fw->pram0;
271 add = info->pram;
272 for (cnt = 0; cnt < PRAM0_SIZE; cnt++, add++, ptr++)
273 siu_write32(add, *ptr);
274
275 ptr = fw->pram1;
276 add = info->pram + (0x0100 / sizeof(u32));
277 for (cnt = 0; cnt < PRAM1_SIZE; cnt++, add++, ptr++)
278 siu_write32(add, *ptr);
279
280 /* XRAM initialization */
281 add = info->xram;
282 for (cnt = 0; cnt < XRAM0_SIZE + XRAM1_SIZE + XRAM2_SIZE; cnt++, add++)
283 siu_write32(add, 0);
284
285 /* YRAM variable area initialization */
286 add = info->yram;
287 for (cnt = 0; cnt < YRAM_DEF_SIZE; cnt++, add++)
288 siu_write32(add, ydef[cnt]);
289
290 /* YRAM FIR coefficient area initialization */
291 add = info->yram + (0x0200 / sizeof(u32));
292 for (cnt = 0; cnt < YRAM_FIR_SIZE; cnt++, add++)
293 siu_write32(add, fw->yram_fir_coeff[cnt]);
294
295 /* YRAM IIR coefficient area initialization */
296 add = info->yram + (0x0600 / sizeof(u32));
297 for (cnt = 0; cnt < YRAM_IIR_SIZE; cnt++, add++)
298 siu_write32(add, 0);
299
300 siu_write32(base + SIU_TRDAT, port_info->trdat);
301 port_info->trdat = 0x0;
302
303
304 /* SPB start condition: software */
305 siu_write32(base + SIU_SBACTIV, 0);
306 /* Start SPB */
307 siu_write32(base + SIU_SBCTL, 0xc0000000);
308 /* Wait for program to halt */
309 cnt = 0x10000;
310 while (--cnt && siu_read32(base + SIU_SBCTL) != 0x80000000)
311 cpu_relax();
312
313 if (!cnt)
314 return -EBUSY;
315
316 /* SPB program start address setting */
317 siu_write32(base + SIU_SBPSET, 0x00400000);
318 /* SPB hardware start(FIFOCTL source) */
319 siu_write32(base + SIU_SBACTIV, 0xc0000000);
320
321 return 0;
322 }
323
324 static void siu_dai_spbstop(struct siu_port *port_info)
325 {
326 struct siu_info *info = siu_i2s_dai.private_data;
327 u32 __iomem *base = info->reg;
328
329 siu_write32(base + SIU_SBACTIV, 0);
330 /* SPB stop */
331 siu_write32(base + SIU_SBCTL, 0);
332
333 port_info->stfifo = 0;
334 }
335
336 /* API functions */
337
338 /* Playback and capture hardware properties are identical */
339 static struct snd_pcm_hardware siu_dai_pcm_hw = {
340 .info = SNDRV_PCM_INFO_INTERLEAVED,
341 .formats = SNDRV_PCM_FMTBIT_S16,
342 .rates = SNDRV_PCM_RATE_8000_48000,
343 .rate_min = 8000,
344 .rate_max = 48000,
345 .channels_min = 2,
346 .channels_max = 2,
347 .buffer_bytes_max = SIU_BUFFER_BYTES_MAX,
348 .period_bytes_min = SIU_PERIOD_BYTES_MIN,
349 .period_bytes_max = SIU_PERIOD_BYTES_MAX,
350 .periods_min = SIU_PERIODS_MIN,
351 .periods_max = SIU_PERIODS_MAX,
352 };
353
354 static int siu_dai_info_volume(struct snd_kcontrol *kctrl,
355 struct snd_ctl_elem_info *uinfo)
356 {
357 struct siu_port *port_info = snd_kcontrol_chip(kctrl);
358
359 dev_dbg(port_info->pcm->card->dev, "%s\n", __func__);
360
361 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
362 uinfo->count = 2;
363 uinfo->value.integer.min = 0;
364 uinfo->value.integer.max = SIU_MAX_VOLUME;
365
366 return 0;
367 }
368
369 static int siu_dai_get_volume(struct snd_kcontrol *kctrl,
370 struct snd_ctl_elem_value *ucontrol)
371 {
372 struct siu_port *port_info = snd_kcontrol_chip(kctrl);
373 struct device *dev = port_info->pcm->card->dev;
374 u32 vol;
375
376 dev_dbg(dev, "%s\n", __func__);
377
378 switch (kctrl->private_value) {
379 case VOLUME_PLAYBACK:
380 /* Playback is always on port 0 */
381 vol = port_info->playback.volume;
382 ucontrol->value.integer.value[0] = vol & 0xffff;
383 ucontrol->value.integer.value[1] = vol >> 16 & 0xffff;
384 break;
385 case VOLUME_CAPTURE:
386 /* Capture is always on port 1 */
387 vol = port_info->capture.volume;
388 ucontrol->value.integer.value[0] = vol & 0xffff;
389 ucontrol->value.integer.value[1] = vol >> 16 & 0xffff;
390 break;
391 default:
392 dev_err(dev, "%s() invalid private_value=%ld\n",
393 __func__, kctrl->private_value);
394 return -EINVAL;
395 }
396
397 return 0;
398 }
399
400 static int siu_dai_put_volume(struct snd_kcontrol *kctrl,
401 struct snd_ctl_elem_value *ucontrol)
402 {
403 struct siu_port *port_info = snd_kcontrol_chip(kctrl);
404 struct device *dev = port_info->pcm->card->dev;
405 struct siu_info *info = siu_i2s_dai.private_data;
406 u32 __iomem *base = info->reg;
407 u32 new_vol;
408 u32 cur_vol;
409
410 dev_dbg(dev, "%s\n", __func__);
411
412 if (ucontrol->value.integer.value[0] < 0 ||
413 ucontrol->value.integer.value[0] > SIU_MAX_VOLUME ||
414 ucontrol->value.integer.value[1] < 0 ||
415 ucontrol->value.integer.value[1] > SIU_MAX_VOLUME)
416 return -EINVAL;
417
418 new_vol = ucontrol->value.integer.value[0] |
419 ucontrol->value.integer.value[1] << 16;
420
421 /* See comment above - DSP firmware implementation */
422 switch (kctrl->private_value) {
423 case VOLUME_PLAYBACK:
424 /* Playback is always on port 0 */
425 cur_vol = port_info->playback.volume;
426 siu_write32(base + SIU_SBDVCA, new_vol);
427 port_info->playback.volume = new_vol;
428 break;
429 case VOLUME_CAPTURE:
430 /* Capture is always on port 1 */
431 cur_vol = port_info->capture.volume;
432 siu_write32(base + SIU_SBDVCB, new_vol);
433 port_info->capture.volume = new_vol;
434 break;
435 default:
436 dev_err(dev, "%s() invalid private_value=%ld\n",
437 __func__, kctrl->private_value);
438 return -EINVAL;
439 }
440
441 if (cur_vol != new_vol)
442 return 1;
443
444 return 0;
445 }
446
447 static struct snd_kcontrol_new playback_controls = {
448 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
449 .name = "PCM Playback Volume",
450 .index = 0,
451 .info = siu_dai_info_volume,
452 .get = siu_dai_get_volume,
453 .put = siu_dai_put_volume,
454 .private_value = VOLUME_PLAYBACK,
455 };
456
457 static struct snd_kcontrol_new capture_controls = {
458 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
459 .name = "PCM Capture Volume",
460 .index = 0,
461 .info = siu_dai_info_volume,
462 .get = siu_dai_get_volume,
463 .put = siu_dai_put_volume,
464 .private_value = VOLUME_CAPTURE,
465 };
466
467 int siu_init_port(int port, struct siu_port **port_info, struct snd_card *card)
468 {
469 struct device *dev = card->dev;
470 struct snd_kcontrol *kctrl;
471 int ret;
472
473 *port_info = kzalloc(sizeof(**port_info), GFP_KERNEL);
474 if (!*port_info)
475 return -ENOMEM;
476
477 dev_dbg(dev, "%s: port #%d@%p\n", __func__, port, *port_info);
478
479 (*port_info)->playback.volume = DFLT_VOLUME_LEVEL;
480 (*port_info)->capture.volume = DFLT_VOLUME_LEVEL;
481
482 /*
483 * Add mixer support. The SPB is used to change the volume. Both
484 * ports use the same SPB. Therefore, we only register one
485 * control instance since it will be used by both channels.
486 * In error case we continue without controls.
487 */
488 kctrl = snd_ctl_new1(&playback_controls, *port_info);
489 ret = snd_ctl_add(card, kctrl);
490 if (ret < 0)
491 dev_err(dev,
492 "failed to add playback controls %p port=%d err=%d\n",
493 kctrl, port, ret);
494
495 kctrl = snd_ctl_new1(&capture_controls, *port_info);
496 ret = snd_ctl_add(card, kctrl);
497 if (ret < 0)
498 dev_err(dev,
499 "failed to add capture controls %p port=%d err=%d\n",
500 kctrl, port, ret);
501
502 return 0;
503 }
504
505 void siu_free_port(struct siu_port *port_info)
506 {
507 kfree(port_info);
508 }
509
510 static int siu_dai_startup(struct snd_pcm_substream *substream,
511 struct snd_soc_dai *dai)
512 {
513 struct siu_info *info = siu_i2s_dai.private_data;
514 struct snd_pcm_runtime *rt = substream->runtime;
515 struct siu_port *port_info = siu_port_info(substream);
516 int ret;
517
518 dev_dbg(substream->pcm->card->dev, "%s: port=%d@%p\n", __func__,
519 info->port_id, port_info);
520
521 snd_soc_set_runtime_hwparams(substream, &siu_dai_pcm_hw);
522
523 ret = snd_pcm_hw_constraint_integer(rt, SNDRV_PCM_HW_PARAM_PERIODS);
524 if (unlikely(ret < 0))
525 return ret;
526
527 siu_dai_start(port_info);
528
529 return 0;
530 }
531
532 static void siu_dai_shutdown(struct snd_pcm_substream *substream,
533 struct snd_soc_dai *dai)
534 {
535 struct siu_info *info = siu_i2s_dai.private_data;
536 struct siu_port *port_info = siu_port_info(substream);
537
538 dev_dbg(substream->pcm->card->dev, "%s: port=%d@%p\n", __func__,
539 info->port_id, port_info);
540
541 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
542 port_info->play_cap &= ~PLAYBACK_ENABLED;
543 else
544 port_info->play_cap &= ~CAPTURE_ENABLED;
545
546 /* Stop the siu if the other stream is not using it */
547 if (!port_info->play_cap) {
548 /* during stmread or stmwrite ? */
549 BUG_ON(port_info->playback.rw_flg || port_info->capture.rw_flg);
550 siu_dai_spbstop(port_info);
551 siu_dai_stop();
552 }
553 }
554
555 /* PCM part of siu_dai_playback_prepare() / siu_dai_capture_prepare() */
556 static int siu_dai_prepare(struct snd_pcm_substream *substream,
557 struct snd_soc_dai *dai)
558 {
559 struct siu_info *info = siu_i2s_dai.private_data;
560 struct snd_pcm_runtime *rt = substream->runtime;
561 struct siu_port *port_info = siu_port_info(substream);
562 struct siu_stream *siu_stream;
563 int self, ret;
564
565 dev_dbg(substream->pcm->card->dev,
566 "%s: port %d, active streams %lx, %d channels\n",
567 __func__, info->port_id, port_info->play_cap, rt->channels);
568
569 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
570 self = PLAYBACK_ENABLED;
571 siu_stream = &port_info->playback;
572 } else {
573 self = CAPTURE_ENABLED;
574 siu_stream = &port_info->capture;
575 }
576
577 /* Set up the siu if not already done */
578 if (!port_info->play_cap) {
579 siu_stream->rw_flg = 0; /* stream-data transfer flag */
580
581 siu_dai_spbAselect(port_info);
582 siu_dai_spbBselect(port_info);
583
584 siu_dai_open(siu_stream);
585
586 siu_dai_pcmdatapack(siu_stream);
587
588 ret = siu_dai_spbstart(port_info);
589 if (ret < 0)
590 goto fail;
591 } else {
592 ret = 0;
593 }
594
595 port_info->play_cap |= self;
596
597 fail:
598 return ret;
599 }
600
601 /*
602 * SIU can set bus format to I2S / PCM / SPDIF independently for playback and
603 * capture, however, the current API sets the bus format globally for a DAI.
604 */
605 static int siu_dai_set_fmt(struct snd_soc_dai *dai,
606 unsigned int fmt)
607 {
608 struct siu_info *info = siu_i2s_dai.private_data;
609 u32 __iomem *base = info->reg;
610 u32 ifctl;
611
612 dev_dbg(dai->dev, "%s: fmt 0x%x on port %d\n",
613 __func__, fmt, info->port_id);
614
615 if (info->port_id < 0)
616 return -ENODEV;
617
618 /* Here select between I2S / PCM / SPDIF */
619 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
620 case SND_SOC_DAIFMT_I2S:
621 ifctl = siu_flags[info->port_id].playback.i2s |
622 siu_flags[info->port_id].capture.i2s;
623 break;
624 case SND_SOC_DAIFMT_LEFT_J:
625 ifctl = siu_flags[info->port_id].playback.pcm |
626 siu_flags[info->port_id].capture.pcm;
627 break;
628 /* SPDIF disabled - see comment at the top */
629 default:
630 return -EINVAL;
631 }
632
633 ifctl |= ~(siu_flags[info->port_id].playback.mask |
634 siu_flags[info->port_id].capture.mask) &
635 siu_read32(base + SIU_IFCTL);
636 siu_write32(base + SIU_IFCTL, ifctl);
637
638 return 0;
639 }
640
641 static int siu_dai_set_sysclk(struct snd_soc_dai *dai, int clk_id,
642 unsigned int freq, int dir)
643 {
644 struct clk *siu_clk, *parent_clk;
645 char *siu_name, *parent_name;
646 int ret;
647
648 if (dir != SND_SOC_CLOCK_IN)
649 return -EINVAL;
650
651 dev_dbg(dai->dev, "%s: using clock %d\n", __func__, clk_id);
652
653 switch (clk_id) {
654 case SIU_CLKA_PLL:
655 siu_name = "siua_clk";
656 parent_name = "pll_clk";
657 break;
658 case SIU_CLKA_EXT:
659 siu_name = "siua_clk";
660 parent_name = "siumcka_clk";
661 break;
662 case SIU_CLKB_PLL:
663 siu_name = "siub_clk";
664 parent_name = "pll_clk";
665 break;
666 case SIU_CLKB_EXT:
667 siu_name = "siub_clk";
668 parent_name = "siumckb_clk";
669 break;
670 default:
671 return -EINVAL;
672 }
673
674 siu_clk = clk_get(siu_i2s_dai.dev, siu_name);
675 if (IS_ERR(siu_clk))
676 return PTR_ERR(siu_clk);
677
678 parent_clk = clk_get(siu_i2s_dai.dev, parent_name);
679 if (!IS_ERR(parent_clk)) {
680 ret = clk_set_parent(siu_clk, parent_clk);
681 if (!ret)
682 clk_set_rate(siu_clk, freq);
683 clk_put(parent_clk);
684 }
685
686 clk_put(siu_clk);
687
688 return 0;
689 }
690
691 static struct snd_soc_dai_ops siu_dai_ops = {
692 .startup = siu_dai_startup,
693 .shutdown = siu_dai_shutdown,
694 .prepare = siu_dai_prepare,
695 .set_sysclk = siu_dai_set_sysclk,
696 .set_fmt = siu_dai_set_fmt,
697 };
698
699 struct snd_soc_dai siu_i2s_dai = {
700 .name = "sh-siu",
701 .id = 0,
702 .playback = {
703 .channels_min = 2,
704 .channels_max = 2,
705 .formats = SNDRV_PCM_FMTBIT_S16,
706 .rates = SNDRV_PCM_RATE_8000_48000,
707 },
708 .capture = {
709 .channels_min = 2,
710 .channels_max = 2,
711 .formats = SNDRV_PCM_FMTBIT_S16,
712 .rates = SNDRV_PCM_RATE_8000_48000,
713 },
714 .ops = &siu_dai_ops,
715 };
716 EXPORT_SYMBOL_GPL(siu_i2s_dai);
717
718 static int __devinit siu_probe(struct platform_device *pdev)
719 {
720 const struct firmware *fw_entry;
721 struct resource *res, *region;
722 struct siu_info *info;
723 int ret;
724
725 info = kmalloc(sizeof(*info), GFP_KERNEL);
726 if (!info)
727 return -ENOMEM;
728
729 ret = request_firmware(&fw_entry, "siu_spb.bin", &pdev->dev);
730 if (ret)
731 goto ereqfw;
732
733 /*
734 * Loaded firmware is "const" - read only, but we have to modify it in
735 * snd_siu_sh7343_spbAselect() and snd_siu_sh7343_spbBselect()
736 */
737 memcpy(&info->fw, fw_entry->data, fw_entry->size);
738
739 release_firmware(fw_entry);
740
741 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
742 if (!res) {
743 ret = -ENODEV;
744 goto egetres;
745 }
746
747 region = request_mem_region(res->start, resource_size(res),
748 pdev->name);
749 if (!region) {
750 dev_err(&pdev->dev, "SIU region already claimed\n");
751 ret = -EBUSY;
752 goto ereqmemreg;
753 }
754
755 ret = -ENOMEM;
756 info->pram = ioremap(res->start, PRAM_SIZE);
757 if (!info->pram)
758 goto emappram;
759 info->xram = ioremap(res->start + XRAM_OFFSET, XRAM_SIZE);
760 if (!info->xram)
761 goto emapxram;
762 info->yram = ioremap(res->start + YRAM_OFFSET, YRAM_SIZE);
763 if (!info->yram)
764 goto emapyram;
765 info->reg = ioremap(res->start + REG_OFFSET, resource_size(res) -
766 REG_OFFSET);
767 if (!info->reg)
768 goto emapreg;
769
770 siu_i2s_dai.dev = &pdev->dev;
771 siu_i2s_dai.private_data = info;
772
773 ret = snd_soc_register_dais(&siu_i2s_dai, 1);
774 if (ret < 0)
775 goto edaiinit;
776
777 ret = snd_soc_register_platform(&siu_platform);
778 if (ret < 0)
779 goto esocregp;
780
781 pm_runtime_enable(&pdev->dev);
782
783 return ret;
784
785 esocregp:
786 snd_soc_unregister_dais(&siu_i2s_dai, 1);
787 edaiinit:
788 iounmap(info->reg);
789 emapreg:
790 iounmap(info->yram);
791 emapyram:
792 iounmap(info->xram);
793 emapxram:
794 iounmap(info->pram);
795 emappram:
796 release_mem_region(res->start, resource_size(res));
797 ereqmemreg:
798 egetres:
799 ereqfw:
800 kfree(info);
801
802 return ret;
803 }
804
805 static int __devexit siu_remove(struct platform_device *pdev)
806 {
807 struct siu_info *info = siu_i2s_dai.private_data;
808 struct resource *res;
809
810 pm_runtime_disable(&pdev->dev);
811
812 snd_soc_unregister_platform(&siu_platform);
813 snd_soc_unregister_dais(&siu_i2s_dai, 1);
814
815 iounmap(info->reg);
816 iounmap(info->yram);
817 iounmap(info->xram);
818 iounmap(info->pram);
819 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
820 if (res)
821 release_mem_region(res->start, resource_size(res));
822 kfree(info);
823
824 return 0;
825 }
826
827 static struct platform_driver siu_driver = {
828 .driver = {
829 .name = "sh_siu",
830 },
831 .probe = siu_probe,
832 .remove = __devexit_p(siu_remove),
833 };
834
835 static int __init siu_init(void)
836 {
837 return platform_driver_register(&siu_driver);
838 }
839
840 static void __exit siu_exit(void)
841 {
842 platform_driver_unregister(&siu_driver);
843 }
844
845 module_init(siu_init)
846 module_exit(siu_exit)
847
848 MODULE_AUTHOR("Carlos Munoz <carlos@kenati.com>");
849 MODULE_DESCRIPTION("ALSA SoC SH7722 SIU driver");
850 MODULE_LICENSE("GPL");
linux-next