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895d4509 GL |
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 | ||
26 | #include <asm/clock.h> | |
27 | #include <asm/siu.h> | |
28 | ||
29 | #include <sound/control.h> | |
30 | #include <sound/soc-dai.h> | |
31 | ||
32 | #include "siu.h" | |
33 | ||
34 | /* Board specifics */ | |
35 | #if defined(CONFIG_CPU_SUBTYPE_SH7722) | |
36 | # define SIU_MAX_VOLUME 0x1000 | |
37 | #else | |
38 | # define SIU_MAX_VOLUME 0x7fff | |
39 | #endif | |
40 | ||
41 | #define PRAM_SIZE 0x2000 | |
42 | #define XRAM_SIZE 0x800 | |
43 | #define YRAM_SIZE 0x800 | |
44 | ||
45 | #define XRAM_OFFSET 0x4000 | |
46 | #define YRAM_OFFSET 0x6000 | |
47 | #define REG_OFFSET 0xc000 | |
48 | ||
49 | #define PLAYBACK_ENABLED 1 | |
50 | #define CAPTURE_ENABLED 2 | |
51 | ||
52 | #define VOLUME_CAPTURE 0 | |
53 | #define VOLUME_PLAYBACK 1 | |
54 | #define DFLT_VOLUME_LEVEL 0x08000800 | |
55 | ||
56 | /* | |
57 | * SPDIF is only available on port A and on some SIU implementations it is only | |
58 | * available for input. Due to the lack of hardware to test it, SPDIF is left | |
59 | * disabled in this driver version | |
60 | */ | |
61 | struct format_flag { | |
62 | u32 i2s; | |
63 | u32 pcm; | |
64 | u32 spdif; | |
65 | u32 mask; | |
66 | }; | |
67 | ||
68 | struct port_flag { | |
69 | struct format_flag playback; | |
70 | struct format_flag capture; | |
71 | }; | |
72 | ||
73 | static struct port_flag siu_flags[SIU_PORT_NUM] = { | |
74 | [SIU_PORT_A] = { | |
75 | .playback = { | |
76 | .i2s = 0x50000000, | |
77 | .pcm = 0x40000000, | |
78 | .spdif = 0x80000000, /* not on all SIU versions */ | |
79 | .mask = 0xd0000000, | |
80 | }, | |
81 | .capture = { | |
82 | .i2s = 0x05000000, | |
83 | .pcm = 0x04000000, | |
84 | .spdif = 0x08000000, | |
85 | .mask = 0x0d000000, | |
86 | }, | |
87 | }, | |
88 | [SIU_PORT_B] = { | |
89 | .playback = { | |
90 | .i2s = 0x00500000, | |
91 | .pcm = 0x00400000, | |
92 | .spdif = 0, /* impossible - turn off */ | |
93 | .mask = 0x00500000, | |
94 | }, | |
95 | .capture = { | |
96 | .i2s = 0x00050000, | |
97 | .pcm = 0x00040000, | |
98 | .spdif = 0, /* impossible - turn off */ | |
99 | .mask = 0x00050000, | |
100 | }, | |
101 | }, | |
102 | }; | |
103 | ||
104 | static void siu_dai_start(struct siu_port *port_info) | |
105 | { | |
106 | struct siu_info *info = siu_i2s_dai.private_data; | |
107 | u32 __iomem *base = info->reg; | |
108 | ||
109 | dev_dbg(port_info->pcm->card->dev, "%s\n", __func__); | |
110 | ||
111 | /* Turn on SIU clock */ | |
112 | pm_runtime_get_sync(siu_i2s_dai.dev); | |
113 | ||
114 | /* Issue software reset to siu */ | |
115 | siu_write32(base + SIU_SRCTL, 0); | |
116 | ||
117 | /* Wait for the reset to take effect */ | |
118 | udelay(1); | |
119 | ||
120 | port_info->stfifo = 0; | |
121 | port_info->trdat = 0; | |
122 | ||
123 | /* portA, portB, SIU operate */ | |
124 | siu_write32(base + SIU_SRCTL, 0x301); | |
125 | ||
126 | /* portA=256fs, portB=256fs */ | |
127 | siu_write32(base + SIU_CKCTL, 0x40400000); | |
128 | ||
129 | /* portA's BRG does not divide SIUCKA */ | |
130 | siu_write32(base + SIU_BRGASEL, 0); | |
131 | siu_write32(base + SIU_BRRA, 0); | |
132 | ||
133 | /* portB's BRG divides SIUCKB by half */ | |
134 | siu_write32(base + SIU_BRGBSEL, 1); | |
135 | siu_write32(base + SIU_BRRB, 0); | |
136 | ||
137 | siu_write32(base + SIU_IFCTL, 0x44440000); | |
138 | ||
139 | /* portA: 32 bit/fs, master; portB: 32 bit/fs, master */ | |
140 | siu_write32(base + SIU_SFORM, 0x0c0c0000); | |
141 | ||
142 | /* | |
143 | * Volume levels: looks like the DSP firmware implements volume controls | |
144 | * differently from what's described in the datasheet | |
145 | */ | |
146 | siu_write32(base + SIU_SBDVCA, port_info->playback.volume); | |
147 | siu_write32(base + SIU_SBDVCB, port_info->capture.volume); | |
148 | } | |
149 | ||
150 | static void siu_dai_stop(void) | |
151 | { | |
152 | struct siu_info *info = siu_i2s_dai.private_data; | |
153 | u32 __iomem *base = info->reg; | |
154 | ||
155 | /* SIU software reset */ | |
156 | siu_write32(base + SIU_SRCTL, 0); | |
157 | ||
158 | /* Turn off SIU clock */ | |
159 | pm_runtime_put_sync(siu_i2s_dai.dev); | |
160 | } | |
161 | ||
162 | static void siu_dai_spbAselect(struct siu_port *port_info) | |
163 | { | |
164 | struct siu_info *info = siu_i2s_dai.private_data; | |
165 | struct siu_firmware *fw = &info->fw; | |
166 | u32 *ydef = fw->yram0; | |
167 | u32 idx; | |
168 | ||
169 | /* path A use */ | |
170 | if (!info->port_id) | |
171 | idx = 1; /* portA */ | |
172 | else | |
173 | idx = 2; /* portB */ | |
174 | ||
175 | ydef[0] = (fw->spbpar[idx].ab1a << 16) | | |
176 | (fw->spbpar[idx].ab0a << 8) | | |
177 | (fw->spbpar[idx].dir << 7) | 3; | |
178 | ydef[1] = fw->yram0[1]; /* 0x03000300 */ | |
179 | ydef[2] = (16 / 2) << 24; | |
180 | ydef[3] = fw->yram0[3]; /* 0 */ | |
181 | ydef[4] = fw->yram0[4]; /* 0 */ | |
182 | ydef[7] = fw->spbpar[idx].event; | |
183 | port_info->stfifo |= fw->spbpar[idx].stfifo; | |
184 | port_info->trdat |= fw->spbpar[idx].trdat; | |
185 | } | |
186 | ||
187 | static void siu_dai_spbBselect(struct siu_port *port_info) | |
188 | { | |
189 | struct siu_info *info = siu_i2s_dai.private_data; | |
190 | struct siu_firmware *fw = &info->fw; | |
191 | u32 *ydef = fw->yram0; | |
192 | u32 idx; | |
193 | ||
194 | /* path B use */ | |
195 | if (!info->port_id) | |
196 | idx = 7; /* portA */ | |
197 | else | |
198 | idx = 8; /* portB */ | |
199 | ||
200 | ydef[5] = (fw->spbpar[idx].ab1a << 16) | | |
201 | (fw->spbpar[idx].ab0a << 8) | 1; | |
202 | ydef[6] = fw->spbpar[idx].event; | |
203 | port_info->stfifo |= fw->spbpar[idx].stfifo; | |
204 | port_info->trdat |= fw->spbpar[idx].trdat; | |
205 | } | |
206 | ||
207 | static void siu_dai_open(struct siu_stream *siu_stream) | |
208 | { | |
209 | struct siu_info *info = siu_i2s_dai.private_data; | |
210 | u32 __iomem *base = info->reg; | |
211 | u32 srctl, ifctl; | |
212 | ||
213 | srctl = siu_read32(base + SIU_SRCTL); | |
214 | ifctl = siu_read32(base + SIU_IFCTL); | |
215 | ||
216 | switch (info->port_id) { | |
217 | case SIU_PORT_A: | |
218 | /* portA operates */ | |
219 | srctl |= 0x200; | |
220 | ifctl &= ~0xc2; | |
221 | break; | |
222 | case SIU_PORT_B: | |
223 | /* portB operates */ | |
224 | srctl |= 0x100; | |
225 | ifctl &= ~0x31; | |
226 | break; | |
227 | } | |
228 | ||
229 | siu_write32(base + SIU_SRCTL, srctl); | |
230 | /* Unmute and configure portA */ | |
231 | siu_write32(base + SIU_IFCTL, ifctl); | |
232 | } | |
233 | ||
234 | /* | |
235 | * At the moment only fixed Left-upper, Left-lower, Right-upper, Right-lower | |
236 | * packing is supported | |
237 | */ | |
238 | static void siu_dai_pcmdatapack(struct siu_stream *siu_stream) | |
239 | { | |
240 | struct siu_info *info = siu_i2s_dai.private_data; | |
241 | u32 __iomem *base = info->reg; | |
242 | u32 dpak; | |
243 | ||
244 | dpak = siu_read32(base + SIU_DPAK); | |
245 | ||
246 | switch (info->port_id) { | |
247 | case SIU_PORT_A: | |
248 | dpak &= ~0xc0000000; | |
249 | break; | |
250 | case SIU_PORT_B: | |
251 | dpak &= ~0x00c00000; | |
252 | break; | |
253 | } | |
254 | ||
255 | siu_write32(base + SIU_DPAK, dpak); | |
256 | } | |
257 | ||
258 | static int siu_dai_spbstart(struct siu_port *port_info) | |
259 | { | |
260 | struct siu_info *info = siu_i2s_dai.private_data; | |
261 | u32 __iomem *base = info->reg; | |
262 | struct siu_firmware *fw = &info->fw; | |
263 | u32 *ydef = fw->yram0; | |
264 | int cnt; | |
265 | u32 __iomem *add; | |
266 | u32 *ptr; | |
267 | ||
268 | /* Load SPB Program in PRAM */ | |
269 | ptr = fw->pram0; | |
270 | add = info->pram; | |
271 | for (cnt = 0; cnt < PRAM0_SIZE; cnt++, add++, ptr++) | |
272 | siu_write32(add, *ptr); | |
273 | ||
274 | ptr = fw->pram1; | |
275 | add = info->pram + (0x0100 / sizeof(u32)); | |
276 | for (cnt = 0; cnt < PRAM1_SIZE; cnt++, add++, ptr++) | |
277 | siu_write32(add, *ptr); | |
278 | ||
279 | /* XRAM initialization */ | |
280 | add = info->xram; | |
281 | for (cnt = 0; cnt < XRAM0_SIZE + XRAM1_SIZE + XRAM2_SIZE; cnt++, add++) | |
282 | siu_write32(add, 0); | |
283 | ||
284 | /* YRAM variable area initialization */ | |
285 | add = info->yram; | |
286 | for (cnt = 0; cnt < YRAM_DEF_SIZE; cnt++, add++) | |
287 | siu_write32(add, ydef[cnt]); | |
288 | ||
289 | /* YRAM FIR coefficient area initialization */ | |
290 | add = info->yram + (0x0200 / sizeof(u32)); | |
291 | for (cnt = 0; cnt < YRAM_FIR_SIZE; cnt++, add++) | |
292 | siu_write32(add, fw->yram_fir_coeff[cnt]); | |
293 | ||
294 | /* YRAM IIR coefficient area initialization */ | |
295 | add = info->yram + (0x0600 / sizeof(u32)); | |
296 | for (cnt = 0; cnt < YRAM_IIR_SIZE; cnt++, add++) | |
297 | siu_write32(add, 0); | |
298 | ||
299 | siu_write32(base + SIU_TRDAT, port_info->trdat); | |
300 | port_info->trdat = 0x0; | |
301 | ||
302 | ||
303 | /* SPB start condition: software */ | |
304 | siu_write32(base + SIU_SBACTIV, 0); | |
305 | /* Start SPB */ | |
306 | siu_write32(base + SIU_SBCTL, 0xc0000000); | |
307 | /* Wait for program to halt */ | |
308 | cnt = 0x10000; | |
309 | while (--cnt && siu_read32(base + SIU_SBCTL) != 0x80000000) | |
310 | cpu_relax(); | |
311 | ||
312 | if (!cnt) | |
313 | return -EBUSY; | |
314 | ||
315 | /* SPB program start address setting */ | |
316 | siu_write32(base + SIU_SBPSET, 0x00400000); | |
317 | /* SPB hardware start(FIFOCTL source) */ | |
318 | siu_write32(base + SIU_SBACTIV, 0xc0000000); | |
319 | ||
320 | return 0; | |
321 | } | |
322 | ||
323 | static void siu_dai_spbstop(struct siu_port *port_info) | |
324 | { | |
325 | struct siu_info *info = siu_i2s_dai.private_data; | |
326 | u32 __iomem *base = info->reg; | |
327 | ||
328 | siu_write32(base + SIU_SBACTIV, 0); | |
329 | /* SPB stop */ | |
330 | siu_write32(base + SIU_SBCTL, 0); | |
331 | ||
332 | port_info->stfifo = 0; | |
333 | } | |
334 | ||
335 | /* API functions */ | |
336 | ||
337 | /* Playback and capture hardware properties are identical */ | |
338 | static struct snd_pcm_hardware siu_dai_pcm_hw = { | |
339 | .info = SNDRV_PCM_INFO_INTERLEAVED, | |
340 | .formats = SNDRV_PCM_FMTBIT_S16, | |
341 | .rates = SNDRV_PCM_RATE_8000_48000, | |
342 | .rate_min = 8000, | |
343 | .rate_max = 48000, | |
344 | .channels_min = 2, | |
345 | .channels_max = 2, | |
346 | .buffer_bytes_max = SIU_BUFFER_BYTES_MAX, | |
347 | .period_bytes_min = SIU_PERIOD_BYTES_MIN, | |
348 | .period_bytes_max = SIU_PERIOD_BYTES_MAX, | |
349 | .periods_min = SIU_PERIODS_MIN, | |
350 | .periods_max = SIU_PERIODS_MAX, | |
351 | }; | |
352 | ||
353 | static int siu_dai_info_volume(struct snd_kcontrol *kctrl, | |
354 | struct snd_ctl_elem_info *uinfo) | |
355 | { | |
356 | struct siu_port *port_info = snd_kcontrol_chip(kctrl); | |
357 | ||
358 | dev_dbg(port_info->pcm->card->dev, "%s\n", __func__); | |
359 | ||
360 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; | |
361 | uinfo->count = 2; | |
362 | uinfo->value.integer.min = 0; | |
363 | uinfo->value.integer.max = SIU_MAX_VOLUME; | |
364 | ||
365 | return 0; | |
366 | } | |
367 | ||
368 | static int siu_dai_get_volume(struct snd_kcontrol *kctrl, | |
369 | struct snd_ctl_elem_value *ucontrol) | |
370 | { | |
371 | struct siu_port *port_info = snd_kcontrol_chip(kctrl); | |
372 | struct device *dev = port_info->pcm->card->dev; | |
373 | u32 vol; | |
374 | ||
375 | dev_dbg(dev, "%s\n", __func__); | |
376 | ||
377 | switch (kctrl->private_value) { | |
378 | case VOLUME_PLAYBACK: | |
379 | /* Playback is always on port 0 */ | |
380 | vol = port_info->playback.volume; | |
381 | ucontrol->value.integer.value[0] = vol & 0xffff; | |
382 | ucontrol->value.integer.value[1] = vol >> 16 & 0xffff; | |
383 | break; | |
384 | case VOLUME_CAPTURE: | |
385 | /* Capture is always on port 1 */ | |
386 | vol = port_info->capture.volume; | |
387 | ucontrol->value.integer.value[0] = vol & 0xffff; | |
388 | ucontrol->value.integer.value[1] = vol >> 16 & 0xffff; | |
389 | break; | |
390 | default: | |
391 | dev_err(dev, "%s() invalid private_value=%ld\n", | |
392 | __func__, kctrl->private_value); | |
393 | return -EINVAL; | |
394 | } | |
395 | ||
396 | return 0; | |
397 | } | |
398 | ||
399 | static int siu_dai_put_volume(struct snd_kcontrol *kctrl, | |
400 | struct snd_ctl_elem_value *ucontrol) | |
401 | { | |
402 | struct siu_port *port_info = snd_kcontrol_chip(kctrl); | |
403 | struct device *dev = port_info->pcm->card->dev; | |
404 | struct siu_info *info = siu_i2s_dai.private_data; | |
405 | u32 __iomem *base = info->reg; | |
406 | u32 new_vol; | |
407 | u32 cur_vol; | |
408 | ||
409 | dev_dbg(dev, "%s\n", __func__); | |
410 | ||
411 | if (ucontrol->value.integer.value[0] < 0 || | |
412 | ucontrol->value.integer.value[0] > SIU_MAX_VOLUME || | |
413 | ucontrol->value.integer.value[1] < 0 || | |
414 | ucontrol->value.integer.value[1] > SIU_MAX_VOLUME) | |
415 | return -EINVAL; | |
416 | ||
417 | new_vol = ucontrol->value.integer.value[0] | | |
418 | ucontrol->value.integer.value[1] << 16; | |
419 | ||
420 | /* See comment above - DSP firmware implementation */ | |
421 | switch (kctrl->private_value) { | |
422 | case VOLUME_PLAYBACK: | |
423 | /* Playback is always on port 0 */ | |
424 | cur_vol = port_info->playback.volume; | |
425 | siu_write32(base + SIU_SBDVCA, new_vol); | |
426 | port_info->playback.volume = new_vol; | |
427 | break; | |
428 | case VOLUME_CAPTURE: | |
429 | /* Capture is always on port 1 */ | |
430 | cur_vol = port_info->capture.volume; | |
431 | siu_write32(base + SIU_SBDVCB, new_vol); | |
432 | port_info->capture.volume = new_vol; | |
433 | break; | |
434 | default: | |
435 | dev_err(dev, "%s() invalid private_value=%ld\n", | |
436 | __func__, kctrl->private_value); | |
437 | return -EINVAL; | |
438 | } | |
439 | ||
440 | if (cur_vol != new_vol) | |
441 | return 1; | |
442 | ||
443 | return 0; | |
444 | } | |
445 | ||
446 | static struct snd_kcontrol_new playback_controls = { | |
447 | .iface = SNDRV_CTL_ELEM_IFACE_MIXER, | |
448 | .name = "PCM Playback Volume", | |
449 | .index = 0, | |
450 | .info = siu_dai_info_volume, | |
451 | .get = siu_dai_get_volume, | |
452 | .put = siu_dai_put_volume, | |
453 | .private_value = VOLUME_PLAYBACK, | |
454 | }; | |
455 | ||
456 | static struct snd_kcontrol_new capture_controls = { | |
457 | .iface = SNDRV_CTL_ELEM_IFACE_MIXER, | |
458 | .name = "PCM Capture Volume", | |
459 | .index = 0, | |
460 | .info = siu_dai_info_volume, | |
461 | .get = siu_dai_get_volume, | |
462 | .put = siu_dai_put_volume, | |
463 | .private_value = VOLUME_CAPTURE, | |
464 | }; | |
465 | ||
466 | int siu_init_port(int port, struct siu_port **port_info, struct snd_card *card) | |
467 | { | |
468 | struct device *dev = card->dev; | |
469 | struct snd_kcontrol *kctrl; | |
470 | int ret; | |
471 | ||
472 | *port_info = kzalloc(sizeof(**port_info), GFP_KERNEL); | |
473 | if (!*port_info) | |
474 | return -ENOMEM; | |
475 | ||
476 | dev_dbg(dev, "%s: port #%d@%p\n", __func__, port, *port_info); | |
477 | ||
478 | (*port_info)->playback.volume = DFLT_VOLUME_LEVEL; | |
479 | (*port_info)->capture.volume = DFLT_VOLUME_LEVEL; | |
480 | ||
481 | /* | |
482 | * Add mixer support. The SPB is used to change the volume. Both | |
483 | * ports use the same SPB. Therefore, we only register one | |
484 | * control instance since it will be used by both channels. | |
485 | * In error case we continue without controls. | |
486 | */ | |
487 | kctrl = snd_ctl_new1(&playback_controls, *port_info); | |
488 | ret = snd_ctl_add(card, kctrl); | |
489 | if (ret < 0) | |
490 | dev_err(dev, | |
491 | "failed to add playback controls %p port=%d err=%d\n", | |
492 | kctrl, port, ret); | |
493 | ||
494 | kctrl = snd_ctl_new1(&capture_controls, *port_info); | |
495 | ret = snd_ctl_add(card, kctrl); | |
496 | if (ret < 0) | |
497 | dev_err(dev, | |
498 | "failed to add capture controls %p port=%d err=%d\n", | |
499 | kctrl, port, ret); | |
500 | ||
501 | return 0; | |
502 | } | |
503 | ||
504 | void siu_free_port(struct siu_port *port_info) | |
505 | { | |
506 | kfree(port_info); | |
507 | } | |
508 | ||
509 | static int siu_dai_startup(struct snd_pcm_substream *substream, | |
510 | struct snd_soc_dai *dai) | |
511 | { | |
512 | struct siu_info *info = siu_i2s_dai.private_data; | |
513 | struct snd_pcm_runtime *rt = substream->runtime; | |
514 | struct siu_port *port_info = siu_port_info(substream); | |
515 | int ret; | |
516 | ||
517 | dev_dbg(substream->pcm->card->dev, "%s: port=%d@%p\n", __func__, | |
518 | info->port_id, port_info); | |
519 | ||
520 | snd_soc_set_runtime_hwparams(substream, &siu_dai_pcm_hw); | |
521 | ||
522 | ret = snd_pcm_hw_constraint_integer(rt, SNDRV_PCM_HW_PARAM_PERIODS); | |
523 | if (unlikely(ret < 0)) | |
524 | return ret; | |
525 | ||
526 | siu_dai_start(port_info); | |
527 | ||
528 | return 0; | |
529 | } | |
530 | ||
531 | static void siu_dai_shutdown(struct snd_pcm_substream *substream, | |
532 | struct snd_soc_dai *dai) | |
533 | { | |
534 | struct siu_info *info = siu_i2s_dai.private_data; | |
535 | struct siu_port *port_info = siu_port_info(substream); | |
536 | ||
537 | dev_dbg(substream->pcm->card->dev, "%s: port=%d@%p\n", __func__, | |
538 | info->port_id, port_info); | |
539 | ||
540 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
541 | port_info->play_cap &= ~PLAYBACK_ENABLED; | |
542 | else | |
543 | port_info->play_cap &= ~CAPTURE_ENABLED; | |
544 | ||
545 | /* Stop the siu if the other stream is not using it */ | |
546 | if (!port_info->play_cap) { | |
547 | /* during stmread or stmwrite ? */ | |
548 | BUG_ON(port_info->playback.rw_flg || port_info->capture.rw_flg); | |
549 | siu_dai_spbstop(port_info); | |
550 | siu_dai_stop(); | |
551 | } | |
552 | } | |
553 | ||
554 | /* PCM part of siu_dai_playback_prepare() / siu_dai_capture_prepare() */ | |
555 | static int siu_dai_prepare(struct snd_pcm_substream *substream, | |
556 | struct snd_soc_dai *dai) | |
557 | { | |
558 | struct siu_info *info = siu_i2s_dai.private_data; | |
559 | struct snd_pcm_runtime *rt = substream->runtime; | |
560 | struct siu_port *port_info = siu_port_info(substream); | |
561 | struct siu_stream *siu_stream; | |
562 | int self, ret; | |
563 | ||
564 | dev_dbg(substream->pcm->card->dev, | |
565 | "%s: port %d, active streams %lx, %d channels\n", | |
566 | __func__, info->port_id, port_info->play_cap, rt->channels); | |
567 | ||
568 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
569 | self = PLAYBACK_ENABLED; | |
570 | siu_stream = &port_info->playback; | |
571 | } else { | |
572 | self = CAPTURE_ENABLED; | |
573 | siu_stream = &port_info->capture; | |
574 | } | |
575 | ||
576 | /* Set up the siu if not already done */ | |
577 | if (!port_info->play_cap) { | |
578 | siu_stream->rw_flg = 0; /* stream-data transfer flag */ | |
579 | ||
580 | siu_dai_spbAselect(port_info); | |
581 | siu_dai_spbBselect(port_info); | |
582 | ||
583 | siu_dai_open(siu_stream); | |
584 | ||
585 | siu_dai_pcmdatapack(siu_stream); | |
586 | ||
587 | ret = siu_dai_spbstart(port_info); | |
588 | if (ret < 0) | |
589 | goto fail; | |
590 | } | |
591 | ||
592 | port_info->play_cap |= self; | |
593 | ||
594 | fail: | |
595 | return ret; | |
596 | } | |
597 | ||
598 | /* | |
599 | * SIU can set bus format to I2S / PCM / SPDIF independently for playback and | |
600 | * capture, however, the current API sets the bus format globally for a DAI. | |
601 | */ | |
602 | static int siu_dai_set_fmt(struct snd_soc_dai *dai, | |
603 | unsigned int fmt) | |
604 | { | |
605 | struct siu_info *info = siu_i2s_dai.private_data; | |
606 | u32 __iomem *base = info->reg; | |
607 | u32 ifctl; | |
608 | ||
609 | dev_dbg(dai->dev, "%s: fmt 0x%x on port %d\n", | |
610 | __func__, fmt, info->port_id); | |
611 | ||
612 | if (info->port_id < 0) | |
613 | return -ENODEV; | |
614 | ||
615 | /* Here select between I2S / PCM / SPDIF */ | |
616 | switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { | |
617 | case SND_SOC_DAIFMT_I2S: | |
618 | ifctl = siu_flags[info->port_id].playback.i2s | | |
619 | siu_flags[info->port_id].capture.i2s; | |
620 | break; | |
621 | case SND_SOC_DAIFMT_LEFT_J: | |
622 | ifctl = siu_flags[info->port_id].playback.pcm | | |
623 | siu_flags[info->port_id].capture.pcm; | |
624 | break; | |
625 | /* SPDIF disabled - see comment at the top */ | |
626 | default: | |
627 | return -EINVAL; | |
628 | } | |
629 | ||
630 | ifctl |= ~(siu_flags[info->port_id].playback.mask | | |
631 | siu_flags[info->port_id].capture.mask) & | |
632 | siu_read32(base + SIU_IFCTL); | |
633 | siu_write32(base + SIU_IFCTL, ifctl); | |
634 | ||
635 | return 0; | |
636 | } | |
637 | ||
638 | static int siu_dai_set_sysclk(struct snd_soc_dai *dai, int clk_id, | |
639 | unsigned int freq, int dir) | |
640 | { | |
641 | struct clk *siu_clk, *parent_clk; | |
642 | char *siu_name, *parent_name; | |
643 | int ret; | |
644 | ||
645 | if (dir != SND_SOC_CLOCK_IN) | |
646 | return -EINVAL; | |
647 | ||
648 | dev_dbg(dai->dev, "%s: using clock %d\n", __func__, clk_id); | |
649 | ||
650 | switch (clk_id) { | |
651 | case SIU_CLKA_PLL: | |
652 | siu_name = "siua_clk"; | |
653 | parent_name = "pll_clk"; | |
654 | break; | |
655 | case SIU_CLKA_EXT: | |
656 | siu_name = "siua_clk"; | |
657 | parent_name = "siumcka_clk"; | |
658 | break; | |
659 | case SIU_CLKB_PLL: | |
660 | siu_name = "siub_clk"; | |
661 | parent_name = "pll_clk"; | |
662 | break; | |
663 | case SIU_CLKB_EXT: | |
664 | siu_name = "siub_clk"; | |
665 | parent_name = "siumckb_clk"; | |
666 | break; | |
667 | default: | |
668 | return -EINVAL; | |
669 | } | |
670 | ||
671 | siu_clk = clk_get(siu_i2s_dai.dev, siu_name); | |
672 | if (IS_ERR(siu_clk)) | |
673 | return PTR_ERR(siu_clk); | |
674 | ||
675 | parent_clk = clk_get(siu_i2s_dai.dev, parent_name); | |
676 | if (!IS_ERR(parent_clk)) { | |
677 | ret = clk_set_parent(siu_clk, parent_clk); | |
678 | if (!ret) | |
679 | clk_set_rate(siu_clk, freq); | |
680 | clk_put(parent_clk); | |
681 | } | |
682 | ||
683 | clk_put(siu_clk); | |
684 | ||
685 | return 0; | |
686 | } | |
687 | ||
688 | static struct snd_soc_dai_ops siu_dai_ops = { | |
689 | .startup = siu_dai_startup, | |
690 | .shutdown = siu_dai_shutdown, | |
691 | .prepare = siu_dai_prepare, | |
692 | .set_sysclk = siu_dai_set_sysclk, | |
693 | .set_fmt = siu_dai_set_fmt, | |
694 | }; | |
695 | ||
696 | struct snd_soc_dai siu_i2s_dai = { | |
697 | .name = "sh-siu", | |
698 | .id = 0, | |
699 | .playback = { | |
700 | .channels_min = 2, | |
701 | .channels_max = 2, | |
702 | .formats = SNDRV_PCM_FMTBIT_S16, | |
703 | .rates = SNDRV_PCM_RATE_8000_48000, | |
704 | }, | |
705 | .capture = { | |
706 | .channels_min = 2, | |
707 | .channels_max = 2, | |
708 | .formats = SNDRV_PCM_FMTBIT_S16, | |
709 | .rates = SNDRV_PCM_RATE_8000_48000, | |
710 | }, | |
711 | .ops = &siu_dai_ops, | |
712 | }; | |
713 | EXPORT_SYMBOL_GPL(siu_i2s_dai); | |
714 | ||
715 | static int __devinit siu_probe(struct platform_device *pdev) | |
716 | { | |
717 | const struct firmware *fw_entry; | |
718 | struct resource *res, *region; | |
719 | struct siu_info *info; | |
720 | int ret; | |
721 | ||
722 | info = kmalloc(sizeof(*info), GFP_KERNEL); | |
723 | if (!info) | |
724 | return -ENOMEM; | |
725 | ||
726 | ret = request_firmware(&fw_entry, "siu_spb.bin", &pdev->dev); | |
727 | if (ret) | |
728 | goto ereqfw; | |
729 | ||
730 | /* | |
731 | * Loaded firmware is "const" - read only, but we have to modify it in | |
732 | * snd_siu_sh7343_spbAselect() and snd_siu_sh7343_spbBselect() | |
733 | */ | |
734 | memcpy(&info->fw, fw_entry->data, fw_entry->size); | |
735 | ||
736 | release_firmware(fw_entry); | |
737 | ||
738 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
739 | if (!res) { | |
740 | ret = -ENODEV; | |
741 | goto egetres; | |
742 | } | |
743 | ||
744 | region = request_mem_region(res->start, resource_size(res), | |
745 | pdev->name); | |
746 | if (!region) { | |
747 | dev_err(&pdev->dev, "SIU region already claimed\n"); | |
748 | ret = -EBUSY; | |
749 | goto ereqmemreg; | |
750 | } | |
751 | ||
752 | ret = -ENOMEM; | |
753 | info->pram = ioremap(res->start, PRAM_SIZE); | |
754 | if (!info->pram) | |
755 | goto emappram; | |
756 | info->xram = ioremap(res->start + XRAM_OFFSET, XRAM_SIZE); | |
757 | if (!info->xram) | |
758 | goto emapxram; | |
759 | info->yram = ioremap(res->start + YRAM_OFFSET, YRAM_SIZE); | |
760 | if (!info->yram) | |
761 | goto emapyram; | |
762 | info->reg = ioremap(res->start + REG_OFFSET, resource_size(res) - | |
763 | REG_OFFSET); | |
764 | if (!info->reg) | |
765 | goto emapreg; | |
766 | ||
767 | siu_i2s_dai.dev = &pdev->dev; | |
768 | siu_i2s_dai.private_data = info; | |
769 | ||
770 | ret = snd_soc_register_dais(&siu_i2s_dai, 1); | |
771 | if (ret < 0) | |
772 | goto edaiinit; | |
773 | ||
774 | ret = snd_soc_register_platform(&siu_platform); | |
775 | if (ret < 0) | |
776 | goto esocregp; | |
777 | ||
778 | pm_runtime_enable(&pdev->dev); | |
779 | ||
780 | return ret; | |
781 | ||
782 | esocregp: | |
783 | snd_soc_unregister_dais(&siu_i2s_dai, 1); | |
784 | edaiinit: | |
785 | iounmap(info->reg); | |
786 | emapreg: | |
787 | iounmap(info->yram); | |
788 | emapyram: | |
789 | iounmap(info->xram); | |
790 | emapxram: | |
791 | iounmap(info->pram); | |
792 | emappram: | |
793 | release_mem_region(res->start, resource_size(res)); | |
794 | ereqmemreg: | |
795 | egetres: | |
796 | ereqfw: | |
797 | kfree(info); | |
798 | ||
799 | return ret; | |
800 | } | |
801 | ||
802 | static int __devexit siu_remove(struct platform_device *pdev) | |
803 | { | |
804 | struct siu_info *info = siu_i2s_dai.private_data; | |
805 | struct resource *res; | |
806 | ||
807 | pm_runtime_disable(&pdev->dev); | |
808 | ||
809 | snd_soc_unregister_platform(&siu_platform); | |
810 | snd_soc_unregister_dais(&siu_i2s_dai, 1); | |
811 | ||
812 | iounmap(info->reg); | |
813 | iounmap(info->yram); | |
814 | iounmap(info->xram); | |
815 | iounmap(info->pram); | |
816 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
817 | if (res) | |
818 | release_mem_region(res->start, resource_size(res)); | |
819 | kfree(info); | |
820 | ||
821 | return 0; | |
822 | } | |
823 | ||
824 | static struct platform_driver siu_driver = { | |
825 | .driver = { | |
826 | .name = "sh_siu", | |
827 | }, | |
828 | .probe = siu_probe, | |
829 | .remove = __devexit_p(siu_remove), | |
830 | }; | |
831 | ||
832 | static int __init siu_init(void) | |
833 | { | |
834 | return platform_driver_register(&siu_driver); | |
835 | } | |
836 | ||
837 | static void __exit siu_exit(void) | |
838 | { | |
839 | platform_driver_unregister(&siu_driver); | |
840 | } | |
841 | ||
842 | module_init(siu_init) | |
843 | module_exit(siu_exit) | |
844 | ||
845 | MODULE_AUTHOR("Carlos Munoz <carlos@kenati.com>"); | |
846 | MODULE_DESCRIPTION("ALSA SoC SH7722 SIU driver"); | |
847 | MODULE_LICENSE("GPL"); |