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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> | |
5a0e3ad6 | 25 | #include <linux/slab.h> |
da155d5b | 26 | #include <linux/module.h> |
895d4509 GL |
27 | |
28 | #include <asm/clock.h> | |
29 | #include <asm/siu.h> | |
30 | ||
31 | #include <sound/control.h> | |
0d911bae | 32 | #include <sound/soc.h> |
895d4509 GL |
33 | |
34 | #include "siu.h" | |
35 | ||
36 | /* Board specifics */ | |
37 | #if defined(CONFIG_CPU_SUBTYPE_SH7722) | |
38 | # define SIU_MAX_VOLUME 0x1000 | |
39 | #else | |
40 | # define SIU_MAX_VOLUME 0x7fff | |
41 | #endif | |
42 | ||
43 | #define PRAM_SIZE 0x2000 | |
44 | #define XRAM_SIZE 0x800 | |
45 | #define YRAM_SIZE 0x800 | |
46 | ||
47 | #define XRAM_OFFSET 0x4000 | |
48 | #define YRAM_OFFSET 0x6000 | |
49 | #define REG_OFFSET 0xc000 | |
50 | ||
51 | #define PLAYBACK_ENABLED 1 | |
52 | #define CAPTURE_ENABLED 2 | |
53 | ||
54 | #define VOLUME_CAPTURE 0 | |
55 | #define VOLUME_PLAYBACK 1 | |
56 | #define DFLT_VOLUME_LEVEL 0x08000800 | |
57 | ||
58 | /* | |
59 | * SPDIF is only available on port A and on some SIU implementations it is only | |
60 | * available for input. Due to the lack of hardware to test it, SPDIF is left | |
61 | * disabled in this driver version | |
62 | */ | |
63 | struct format_flag { | |
64 | u32 i2s; | |
65 | u32 pcm; | |
66 | u32 spdif; | |
67 | u32 mask; | |
68 | }; | |
69 | ||
70 | struct port_flag { | |
71 | struct format_flag playback; | |
72 | struct format_flag capture; | |
73 | }; | |
74 | ||
c6834dd2 | 75 | struct siu_info *siu_i2s_data; |
f0fba2ad | 76 | |
895d4509 GL |
77 | static struct port_flag siu_flags[SIU_PORT_NUM] = { |
78 | [SIU_PORT_A] = { | |
79 | .playback = { | |
80 | .i2s = 0x50000000, | |
81 | .pcm = 0x40000000, | |
82 | .spdif = 0x80000000, /* not on all SIU versions */ | |
83 | .mask = 0xd0000000, | |
84 | }, | |
85 | .capture = { | |
86 | .i2s = 0x05000000, | |
87 | .pcm = 0x04000000, | |
88 | .spdif = 0x08000000, | |
89 | .mask = 0x0d000000, | |
90 | }, | |
91 | }, | |
92 | [SIU_PORT_B] = { | |
93 | .playback = { | |
94 | .i2s = 0x00500000, | |
95 | .pcm = 0x00400000, | |
96 | .spdif = 0, /* impossible - turn off */ | |
97 | .mask = 0x00500000, | |
98 | }, | |
99 | .capture = { | |
100 | .i2s = 0x00050000, | |
101 | .pcm = 0x00040000, | |
102 | .spdif = 0, /* impossible - turn off */ | |
103 | .mask = 0x00050000, | |
104 | }, | |
105 | }, | |
106 | }; | |
107 | ||
108 | static void siu_dai_start(struct siu_port *port_info) | |
109 | { | |
f0fba2ad | 110 | struct siu_info *info = siu_i2s_data; |
895d4509 GL |
111 | u32 __iomem *base = info->reg; |
112 | ||
113 | dev_dbg(port_info->pcm->card->dev, "%s\n", __func__); | |
114 | ||
895d4509 GL |
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 | ||
f0fba2ad | 151 | static void siu_dai_stop(struct siu_port *port_info) |
895d4509 | 152 | { |
f0fba2ad | 153 | struct siu_info *info = siu_i2s_data; |
895d4509 GL |
154 | u32 __iomem *base = info->reg; |
155 | ||
156 | /* SIU software reset */ | |
157 | siu_write32(base + SIU_SRCTL, 0); | |
895d4509 GL |
158 | } |
159 | ||
160 | static void siu_dai_spbAselect(struct siu_port *port_info) | |
161 | { | |
f0fba2ad | 162 | struct siu_info *info = siu_i2s_data; |
895d4509 GL |
163 | struct siu_firmware *fw = &info->fw; |
164 | u32 *ydef = fw->yram0; | |
165 | u32 idx; | |
166 | ||
167 | /* path A use */ | |
168 | if (!info->port_id) | |
169 | idx = 1; /* portA */ | |
170 | else | |
171 | idx = 2; /* portB */ | |
172 | ||
173 | ydef[0] = (fw->spbpar[idx].ab1a << 16) | | |
174 | (fw->spbpar[idx].ab0a << 8) | | |
175 | (fw->spbpar[idx].dir << 7) | 3; | |
176 | ydef[1] = fw->yram0[1]; /* 0x03000300 */ | |
177 | ydef[2] = (16 / 2) << 24; | |
178 | ydef[3] = fw->yram0[3]; /* 0 */ | |
179 | ydef[4] = fw->yram0[4]; /* 0 */ | |
180 | ydef[7] = fw->spbpar[idx].event; | |
181 | port_info->stfifo |= fw->spbpar[idx].stfifo; | |
182 | port_info->trdat |= fw->spbpar[idx].trdat; | |
183 | } | |
184 | ||
185 | static void siu_dai_spbBselect(struct siu_port *port_info) | |
186 | { | |
f0fba2ad | 187 | struct siu_info *info = siu_i2s_data; |
895d4509 GL |
188 | struct siu_firmware *fw = &info->fw; |
189 | u32 *ydef = fw->yram0; | |
190 | u32 idx; | |
191 | ||
192 | /* path B use */ | |
193 | if (!info->port_id) | |
194 | idx = 7; /* portA */ | |
195 | else | |
196 | idx = 8; /* portB */ | |
197 | ||
198 | ydef[5] = (fw->spbpar[idx].ab1a << 16) | | |
199 | (fw->spbpar[idx].ab0a << 8) | 1; | |
200 | ydef[6] = fw->spbpar[idx].event; | |
201 | port_info->stfifo |= fw->spbpar[idx].stfifo; | |
202 | port_info->trdat |= fw->spbpar[idx].trdat; | |
203 | } | |
204 | ||
205 | static void siu_dai_open(struct siu_stream *siu_stream) | |
206 | { | |
f0fba2ad | 207 | struct siu_info *info = siu_i2s_data; |
895d4509 GL |
208 | u32 __iomem *base = info->reg; |
209 | u32 srctl, ifctl; | |
210 | ||
211 | srctl = siu_read32(base + SIU_SRCTL); | |
212 | ifctl = siu_read32(base + SIU_IFCTL); | |
213 | ||
214 | switch (info->port_id) { | |
215 | case SIU_PORT_A: | |
216 | /* portA operates */ | |
217 | srctl |= 0x200; | |
218 | ifctl &= ~0xc2; | |
219 | break; | |
220 | case SIU_PORT_B: | |
221 | /* portB operates */ | |
222 | srctl |= 0x100; | |
223 | ifctl &= ~0x31; | |
224 | break; | |
225 | } | |
226 | ||
227 | siu_write32(base + SIU_SRCTL, srctl); | |
228 | /* Unmute and configure portA */ | |
229 | siu_write32(base + SIU_IFCTL, ifctl); | |
230 | } | |
231 | ||
232 | /* | |
233 | * At the moment only fixed Left-upper, Left-lower, Right-upper, Right-lower | |
234 | * packing is supported | |
235 | */ | |
236 | static void siu_dai_pcmdatapack(struct siu_stream *siu_stream) | |
237 | { | |
f0fba2ad | 238 | struct siu_info *info = siu_i2s_data; |
895d4509 GL |
239 | u32 __iomem *base = info->reg; |
240 | u32 dpak; | |
241 | ||
242 | dpak = siu_read32(base + SIU_DPAK); | |
243 | ||
244 | switch (info->port_id) { | |
245 | case SIU_PORT_A: | |
246 | dpak &= ~0xc0000000; | |
247 | break; | |
248 | case SIU_PORT_B: | |
249 | dpak &= ~0x00c00000; | |
250 | break; | |
251 | } | |
252 | ||
253 | siu_write32(base + SIU_DPAK, dpak); | |
254 | } | |
255 | ||
256 | static int siu_dai_spbstart(struct siu_port *port_info) | |
257 | { | |
f0fba2ad | 258 | struct siu_info *info = siu_i2s_data; |
895d4509 GL |
259 | u32 __iomem *base = info->reg; |
260 | struct siu_firmware *fw = &info->fw; | |
261 | u32 *ydef = fw->yram0; | |
262 | int cnt; | |
263 | u32 __iomem *add; | |
264 | u32 *ptr; | |
265 | ||
266 | /* Load SPB Program in PRAM */ | |
267 | ptr = fw->pram0; | |
268 | add = info->pram; | |
269 | for (cnt = 0; cnt < PRAM0_SIZE; cnt++, add++, ptr++) | |
270 | siu_write32(add, *ptr); | |
271 | ||
272 | ptr = fw->pram1; | |
273 | add = info->pram + (0x0100 / sizeof(u32)); | |
274 | for (cnt = 0; cnt < PRAM1_SIZE; cnt++, add++, ptr++) | |
275 | siu_write32(add, *ptr); | |
276 | ||
277 | /* XRAM initialization */ | |
278 | add = info->xram; | |
279 | for (cnt = 0; cnt < XRAM0_SIZE + XRAM1_SIZE + XRAM2_SIZE; cnt++, add++) | |
280 | siu_write32(add, 0); | |
281 | ||
282 | /* YRAM variable area initialization */ | |
283 | add = info->yram; | |
284 | for (cnt = 0; cnt < YRAM_DEF_SIZE; cnt++, add++) | |
285 | siu_write32(add, ydef[cnt]); | |
286 | ||
287 | /* YRAM FIR coefficient area initialization */ | |
288 | add = info->yram + (0x0200 / sizeof(u32)); | |
289 | for (cnt = 0; cnt < YRAM_FIR_SIZE; cnt++, add++) | |
290 | siu_write32(add, fw->yram_fir_coeff[cnt]); | |
291 | ||
292 | /* YRAM IIR coefficient area initialization */ | |
293 | add = info->yram + (0x0600 / sizeof(u32)); | |
294 | for (cnt = 0; cnt < YRAM_IIR_SIZE; cnt++, add++) | |
295 | siu_write32(add, 0); | |
296 | ||
297 | siu_write32(base + SIU_TRDAT, port_info->trdat); | |
298 | port_info->trdat = 0x0; | |
299 | ||
300 | ||
301 | /* SPB start condition: software */ | |
302 | siu_write32(base + SIU_SBACTIV, 0); | |
303 | /* Start SPB */ | |
304 | siu_write32(base + SIU_SBCTL, 0xc0000000); | |
305 | /* Wait for program to halt */ | |
306 | cnt = 0x10000; | |
307 | while (--cnt && siu_read32(base + SIU_SBCTL) != 0x80000000) | |
308 | cpu_relax(); | |
309 | ||
310 | if (!cnt) | |
311 | return -EBUSY; | |
312 | ||
313 | /* SPB program start address setting */ | |
314 | siu_write32(base + SIU_SBPSET, 0x00400000); | |
315 | /* SPB hardware start(FIFOCTL source) */ | |
316 | siu_write32(base + SIU_SBACTIV, 0xc0000000); | |
317 | ||
318 | return 0; | |
319 | } | |
320 | ||
321 | static void siu_dai_spbstop(struct siu_port *port_info) | |
322 | { | |
f0fba2ad | 323 | struct siu_info *info = siu_i2s_data; |
895d4509 GL |
324 | u32 __iomem *base = info->reg; |
325 | ||
326 | siu_write32(base + SIU_SBACTIV, 0); | |
327 | /* SPB stop */ | |
328 | siu_write32(base + SIU_SBCTL, 0); | |
329 | ||
330 | port_info->stfifo = 0; | |
331 | } | |
332 | ||
333 | /* API functions */ | |
334 | ||
335 | /* Playback and capture hardware properties are identical */ | |
336 | static struct snd_pcm_hardware siu_dai_pcm_hw = { | |
337 | .info = SNDRV_PCM_INFO_INTERLEAVED, | |
338 | .formats = SNDRV_PCM_FMTBIT_S16, | |
339 | .rates = SNDRV_PCM_RATE_8000_48000, | |
340 | .rate_min = 8000, | |
341 | .rate_max = 48000, | |
342 | .channels_min = 2, | |
343 | .channels_max = 2, | |
344 | .buffer_bytes_max = SIU_BUFFER_BYTES_MAX, | |
345 | .period_bytes_min = SIU_PERIOD_BYTES_MIN, | |
346 | .period_bytes_max = SIU_PERIOD_BYTES_MAX, | |
347 | .periods_min = SIU_PERIODS_MIN, | |
348 | .periods_max = SIU_PERIODS_MAX, | |
349 | }; | |
350 | ||
351 | static int siu_dai_info_volume(struct snd_kcontrol *kctrl, | |
352 | struct snd_ctl_elem_info *uinfo) | |
353 | { | |
354 | struct siu_port *port_info = snd_kcontrol_chip(kctrl); | |
355 | ||
356 | dev_dbg(port_info->pcm->card->dev, "%s\n", __func__); | |
357 | ||
358 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; | |
359 | uinfo->count = 2; | |
360 | uinfo->value.integer.min = 0; | |
361 | uinfo->value.integer.max = SIU_MAX_VOLUME; | |
362 | ||
363 | return 0; | |
364 | } | |
365 | ||
366 | static int siu_dai_get_volume(struct snd_kcontrol *kctrl, | |
367 | struct snd_ctl_elem_value *ucontrol) | |
368 | { | |
369 | struct siu_port *port_info = snd_kcontrol_chip(kctrl); | |
370 | struct device *dev = port_info->pcm->card->dev; | |
371 | u32 vol; | |
372 | ||
373 | dev_dbg(dev, "%s\n", __func__); | |
374 | ||
375 | switch (kctrl->private_value) { | |
376 | case VOLUME_PLAYBACK: | |
377 | /* Playback is always on port 0 */ | |
378 | vol = port_info->playback.volume; | |
379 | ucontrol->value.integer.value[0] = vol & 0xffff; | |
380 | ucontrol->value.integer.value[1] = vol >> 16 & 0xffff; | |
381 | break; | |
382 | case VOLUME_CAPTURE: | |
383 | /* Capture is always on port 1 */ | |
384 | vol = port_info->capture.volume; | |
385 | ucontrol->value.integer.value[0] = vol & 0xffff; | |
386 | ucontrol->value.integer.value[1] = vol >> 16 & 0xffff; | |
387 | break; | |
388 | default: | |
389 | dev_err(dev, "%s() invalid private_value=%ld\n", | |
390 | __func__, kctrl->private_value); | |
391 | return -EINVAL; | |
392 | } | |
393 | ||
394 | return 0; | |
395 | } | |
396 | ||
397 | static int siu_dai_put_volume(struct snd_kcontrol *kctrl, | |
398 | struct snd_ctl_elem_value *ucontrol) | |
399 | { | |
400 | struct siu_port *port_info = snd_kcontrol_chip(kctrl); | |
401 | struct device *dev = port_info->pcm->card->dev; | |
f0fba2ad | 402 | struct siu_info *info = siu_i2s_data; |
895d4509 GL |
403 | u32 __iomem *base = info->reg; |
404 | u32 new_vol; | |
405 | u32 cur_vol; | |
406 | ||
407 | dev_dbg(dev, "%s\n", __func__); | |
408 | ||
409 | if (ucontrol->value.integer.value[0] < 0 || | |
410 | ucontrol->value.integer.value[0] > SIU_MAX_VOLUME || | |
411 | ucontrol->value.integer.value[1] < 0 || | |
412 | ucontrol->value.integer.value[1] > SIU_MAX_VOLUME) | |
413 | return -EINVAL; | |
414 | ||
415 | new_vol = ucontrol->value.integer.value[0] | | |
416 | ucontrol->value.integer.value[1] << 16; | |
417 | ||
418 | /* See comment above - DSP firmware implementation */ | |
419 | switch (kctrl->private_value) { | |
420 | case VOLUME_PLAYBACK: | |
421 | /* Playback is always on port 0 */ | |
422 | cur_vol = port_info->playback.volume; | |
423 | siu_write32(base + SIU_SBDVCA, new_vol); | |
424 | port_info->playback.volume = new_vol; | |
425 | break; | |
426 | case VOLUME_CAPTURE: | |
427 | /* Capture is always on port 1 */ | |
428 | cur_vol = port_info->capture.volume; | |
429 | siu_write32(base + SIU_SBDVCB, new_vol); | |
430 | port_info->capture.volume = new_vol; | |
431 | break; | |
432 | default: | |
433 | dev_err(dev, "%s() invalid private_value=%ld\n", | |
434 | __func__, kctrl->private_value); | |
435 | return -EINVAL; | |
436 | } | |
437 | ||
438 | if (cur_vol != new_vol) | |
439 | return 1; | |
440 | ||
441 | return 0; | |
442 | } | |
443 | ||
444 | static struct snd_kcontrol_new playback_controls = { | |
445 | .iface = SNDRV_CTL_ELEM_IFACE_MIXER, | |
446 | .name = "PCM Playback Volume", | |
447 | .index = 0, | |
448 | .info = siu_dai_info_volume, | |
449 | .get = siu_dai_get_volume, | |
450 | .put = siu_dai_put_volume, | |
451 | .private_value = VOLUME_PLAYBACK, | |
452 | }; | |
453 | ||
454 | static struct snd_kcontrol_new capture_controls = { | |
455 | .iface = SNDRV_CTL_ELEM_IFACE_MIXER, | |
456 | .name = "PCM Capture Volume", | |
457 | .index = 0, | |
458 | .info = siu_dai_info_volume, | |
459 | .get = siu_dai_get_volume, | |
460 | .put = siu_dai_put_volume, | |
461 | .private_value = VOLUME_CAPTURE, | |
462 | }; | |
463 | ||
464 | int siu_init_port(int port, struct siu_port **port_info, struct snd_card *card) | |
465 | { | |
466 | struct device *dev = card->dev; | |
467 | struct snd_kcontrol *kctrl; | |
468 | int ret; | |
469 | ||
470 | *port_info = kzalloc(sizeof(**port_info), GFP_KERNEL); | |
471 | if (!*port_info) | |
472 | return -ENOMEM; | |
473 | ||
474 | dev_dbg(dev, "%s: port #%d@%p\n", __func__, port, *port_info); | |
475 | ||
476 | (*port_info)->playback.volume = DFLT_VOLUME_LEVEL; | |
477 | (*port_info)->capture.volume = DFLT_VOLUME_LEVEL; | |
478 | ||
479 | /* | |
480 | * Add mixer support. The SPB is used to change the volume. Both | |
481 | * ports use the same SPB. Therefore, we only register one | |
482 | * control instance since it will be used by both channels. | |
483 | * In error case we continue without controls. | |
484 | */ | |
485 | kctrl = snd_ctl_new1(&playback_controls, *port_info); | |
486 | ret = snd_ctl_add(card, kctrl); | |
487 | if (ret < 0) | |
488 | dev_err(dev, | |
489 | "failed to add playback controls %p port=%d err=%d\n", | |
490 | kctrl, port, ret); | |
491 | ||
492 | kctrl = snd_ctl_new1(&capture_controls, *port_info); | |
493 | ret = snd_ctl_add(card, kctrl); | |
494 | if (ret < 0) | |
495 | dev_err(dev, | |
496 | "failed to add capture controls %p port=%d err=%d\n", | |
497 | kctrl, port, ret); | |
498 | ||
499 | return 0; | |
500 | } | |
501 | ||
502 | void siu_free_port(struct siu_port *port_info) | |
503 | { | |
504 | kfree(port_info); | |
505 | } | |
506 | ||
507 | static int siu_dai_startup(struct snd_pcm_substream *substream, | |
508 | struct snd_soc_dai *dai) | |
509 | { | |
f0fba2ad | 510 | struct siu_info *info = snd_soc_dai_get_drvdata(dai); |
895d4509 GL |
511 | struct snd_pcm_runtime *rt = substream->runtime; |
512 | struct siu_port *port_info = siu_port_info(substream); | |
513 | int ret; | |
514 | ||
515 | dev_dbg(substream->pcm->card->dev, "%s: port=%d@%p\n", __func__, | |
516 | info->port_id, port_info); | |
517 | ||
518 | snd_soc_set_runtime_hwparams(substream, &siu_dai_pcm_hw); | |
519 | ||
520 | ret = snd_pcm_hw_constraint_integer(rt, SNDRV_PCM_HW_PARAM_PERIODS); | |
521 | if (unlikely(ret < 0)) | |
522 | return ret; | |
523 | ||
524 | siu_dai_start(port_info); | |
525 | ||
526 | return 0; | |
527 | } | |
528 | ||
529 | static void siu_dai_shutdown(struct snd_pcm_substream *substream, | |
530 | struct snd_soc_dai *dai) | |
531 | { | |
f0fba2ad | 532 | struct siu_info *info = snd_soc_dai_get_drvdata(dai); |
895d4509 GL |
533 | struct siu_port *port_info = siu_port_info(substream); |
534 | ||
535 | dev_dbg(substream->pcm->card->dev, "%s: port=%d@%p\n", __func__, | |
536 | info->port_id, port_info); | |
537 | ||
538 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
539 | port_info->play_cap &= ~PLAYBACK_ENABLED; | |
540 | else | |
541 | port_info->play_cap &= ~CAPTURE_ENABLED; | |
542 | ||
543 | /* Stop the siu if the other stream is not using it */ | |
544 | if (!port_info->play_cap) { | |
545 | /* during stmread or stmwrite ? */ | |
546 | BUG_ON(port_info->playback.rw_flg || port_info->capture.rw_flg); | |
547 | siu_dai_spbstop(port_info); | |
f0fba2ad | 548 | siu_dai_stop(port_info); |
895d4509 GL |
549 | } |
550 | } | |
551 | ||
552 | /* PCM part of siu_dai_playback_prepare() / siu_dai_capture_prepare() */ | |
553 | static int siu_dai_prepare(struct snd_pcm_substream *substream, | |
554 | struct snd_soc_dai *dai) | |
555 | { | |
f0fba2ad | 556 | struct siu_info *info = snd_soc_dai_get_drvdata(dai); |
895d4509 GL |
557 | struct snd_pcm_runtime *rt = substream->runtime; |
558 | struct siu_port *port_info = siu_port_info(substream); | |
559 | struct siu_stream *siu_stream; | |
560 | int self, ret; | |
561 | ||
562 | dev_dbg(substream->pcm->card->dev, | |
563 | "%s: port %d, active streams %lx, %d channels\n", | |
564 | __func__, info->port_id, port_info->play_cap, rt->channels); | |
565 | ||
566 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
567 | self = PLAYBACK_ENABLED; | |
568 | siu_stream = &port_info->playback; | |
569 | } else { | |
570 | self = CAPTURE_ENABLED; | |
571 | siu_stream = &port_info->capture; | |
572 | } | |
573 | ||
574 | /* Set up the siu if not already done */ | |
575 | if (!port_info->play_cap) { | |
576 | siu_stream->rw_flg = 0; /* stream-data transfer flag */ | |
577 | ||
578 | siu_dai_spbAselect(port_info); | |
579 | siu_dai_spbBselect(port_info); | |
580 | ||
581 | siu_dai_open(siu_stream); | |
582 | ||
583 | siu_dai_pcmdatapack(siu_stream); | |
584 | ||
585 | ret = siu_dai_spbstart(port_info); | |
586 | if (ret < 0) | |
587 | goto fail; | |
3ca34149 GL |
588 | } else { |
589 | ret = 0; | |
895d4509 GL |
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 | { | |
f0fba2ad | 605 | struct siu_info *info = snd_soc_dai_get_drvdata(dai); |
895d4509 GL |
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 | ||
f0fba2ad | 671 | siu_clk = clk_get(dai->dev, siu_name); |
c6834dd2 GL |
672 | if (IS_ERR(siu_clk)) { |
673 | dev_err(dai->dev, "%s: cannot get a SIU clock: %ld\n", __func__, | |
674 | PTR_ERR(siu_clk)); | |
895d4509 | 675 | return PTR_ERR(siu_clk); |
c6834dd2 | 676 | } |
895d4509 | 677 | |
f0fba2ad | 678 | parent_clk = clk_get(dai->dev, parent_name); |
c6834dd2 GL |
679 | if (IS_ERR(parent_clk)) { |
680 | ret = PTR_ERR(parent_clk); | |
681 | dev_err(dai->dev, "cannot get a SIU clock parent: %d\n", ret); | |
682 | goto epclkget; | |
683 | } | |
684 | ||
685 | ret = clk_set_parent(siu_clk, parent_clk); | |
686 | if (ret < 0) { | |
687 | dev_err(dai->dev, "cannot reparent the SIU clock: %d\n", ret); | |
688 | goto eclksetp; | |
895d4509 GL |
689 | } |
690 | ||
c6834dd2 GL |
691 | ret = clk_set_rate(siu_clk, freq); |
692 | if (ret < 0) | |
693 | dev_err(dai->dev, "cannot set SIU clock rate: %d\n", ret); | |
694 | ||
695 | /* TODO: when clkdev gets reference counting we'll move these to siu_dai_shutdown() */ | |
696 | eclksetp: | |
697 | clk_put(parent_clk); | |
698 | epclkget: | |
895d4509 GL |
699 | clk_put(siu_clk); |
700 | ||
c6834dd2 | 701 | return ret; |
895d4509 GL |
702 | } |
703 | ||
85e7652d | 704 | static const struct snd_soc_dai_ops siu_dai_ops = { |
895d4509 GL |
705 | .startup = siu_dai_startup, |
706 | .shutdown = siu_dai_shutdown, | |
707 | .prepare = siu_dai_prepare, | |
708 | .set_sysclk = siu_dai_set_sysclk, | |
709 | .set_fmt = siu_dai_set_fmt, | |
710 | }; | |
711 | ||
f0fba2ad | 712 | static struct snd_soc_dai_driver siu_i2s_dai = { |
c6834dd2 | 713 | .name = "siu-i2s-dai", |
895d4509 GL |
714 | .playback = { |
715 | .channels_min = 2, | |
716 | .channels_max = 2, | |
717 | .formats = SNDRV_PCM_FMTBIT_S16, | |
718 | .rates = SNDRV_PCM_RATE_8000_48000, | |
719 | }, | |
720 | .capture = { | |
721 | .channels_min = 2, | |
722 | .channels_max = 2, | |
723 | .formats = SNDRV_PCM_FMTBIT_S16, | |
724 | .rates = SNDRV_PCM_RATE_8000_48000, | |
725 | }, | |
726 | .ops = &siu_dai_ops, | |
727 | }; | |
895d4509 GL |
728 | |
729 | static int __devinit siu_probe(struct platform_device *pdev) | |
730 | { | |
731 | const struct firmware *fw_entry; | |
732 | struct resource *res, *region; | |
733 | struct siu_info *info; | |
734 | int ret; | |
735 | ||
736 | info = kmalloc(sizeof(*info), GFP_KERNEL); | |
737 | if (!info) | |
738 | return -ENOMEM; | |
f0fba2ad | 739 | siu_i2s_data = info; |
c6834dd2 | 740 | info->dev = &pdev->dev; |
895d4509 GL |
741 | |
742 | ret = request_firmware(&fw_entry, "siu_spb.bin", &pdev->dev); | |
743 | if (ret) | |
744 | goto ereqfw; | |
745 | ||
746 | /* | |
747 | * Loaded firmware is "const" - read only, but we have to modify it in | |
748 | * snd_siu_sh7343_spbAselect() and snd_siu_sh7343_spbBselect() | |
749 | */ | |
750 | memcpy(&info->fw, fw_entry->data, fw_entry->size); | |
751 | ||
752 | release_firmware(fw_entry); | |
753 | ||
754 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
755 | if (!res) { | |
756 | ret = -ENODEV; | |
757 | goto egetres; | |
758 | } | |
759 | ||
760 | region = request_mem_region(res->start, resource_size(res), | |
761 | pdev->name); | |
762 | if (!region) { | |
763 | dev_err(&pdev->dev, "SIU region already claimed\n"); | |
764 | ret = -EBUSY; | |
765 | goto ereqmemreg; | |
766 | } | |
767 | ||
768 | ret = -ENOMEM; | |
769 | info->pram = ioremap(res->start, PRAM_SIZE); | |
770 | if (!info->pram) | |
771 | goto emappram; | |
772 | info->xram = ioremap(res->start + XRAM_OFFSET, XRAM_SIZE); | |
773 | if (!info->xram) | |
774 | goto emapxram; | |
775 | info->yram = ioremap(res->start + YRAM_OFFSET, YRAM_SIZE); | |
776 | if (!info->yram) | |
777 | goto emapyram; | |
778 | info->reg = ioremap(res->start + REG_OFFSET, resource_size(res) - | |
779 | REG_OFFSET); | |
780 | if (!info->reg) | |
781 | goto emapreg; | |
782 | ||
f0fba2ad | 783 | dev_set_drvdata(&pdev->dev, info); |
895d4509 | 784 | |
f0fba2ad LG |
785 | /* register using ARRAY version so we can keep dai name */ |
786 | ret = snd_soc_register_dais(&pdev->dev, &siu_i2s_dai, 1); | |
895d4509 GL |
787 | if (ret < 0) |
788 | goto edaiinit; | |
789 | ||
f0fba2ad | 790 | ret = snd_soc_register_platform(&pdev->dev, &siu_platform); |
895d4509 GL |
791 | if (ret < 0) |
792 | goto esocregp; | |
793 | ||
794 | pm_runtime_enable(&pdev->dev); | |
795 | ||
796 | return ret; | |
797 | ||
798 | esocregp: | |
f0fba2ad | 799 | snd_soc_unregister_dai(&pdev->dev); |
895d4509 GL |
800 | edaiinit: |
801 | iounmap(info->reg); | |
802 | emapreg: | |
803 | iounmap(info->yram); | |
804 | emapyram: | |
805 | iounmap(info->xram); | |
806 | emapxram: | |
807 | iounmap(info->pram); | |
808 | emappram: | |
809 | release_mem_region(res->start, resource_size(res)); | |
810 | ereqmemreg: | |
811 | egetres: | |
812 | ereqfw: | |
813 | kfree(info); | |
814 | ||
815 | return ret; | |
816 | } | |
817 | ||
818 | static int __devexit siu_remove(struct platform_device *pdev) | |
819 | { | |
f0fba2ad | 820 | struct siu_info *info = dev_get_drvdata(&pdev->dev); |
895d4509 GL |
821 | struct resource *res; |
822 | ||
823 | pm_runtime_disable(&pdev->dev); | |
824 | ||
f0fba2ad LG |
825 | snd_soc_unregister_platform(&pdev->dev); |
826 | snd_soc_unregister_dai(&pdev->dev); | |
895d4509 GL |
827 | |
828 | iounmap(info->reg); | |
829 | iounmap(info->yram); | |
830 | iounmap(info->xram); | |
831 | iounmap(info->pram); | |
832 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
833 | if (res) | |
834 | release_mem_region(res->start, resource_size(res)); | |
835 | kfree(info); | |
836 | ||
837 | return 0; | |
838 | } | |
839 | ||
840 | static struct platform_driver siu_driver = { | |
841 | .driver = { | |
c6834dd2 | 842 | .owner = THIS_MODULE, |
f0fba2ad | 843 | .name = "siu-pcm-audio", |
895d4509 GL |
844 | }, |
845 | .probe = siu_probe, | |
846 | .remove = __devexit_p(siu_remove), | |
847 | }; | |
848 | ||
cb5e8738 | 849 | module_platform_driver(siu_driver); |
895d4509 GL |
850 | |
851 | MODULE_AUTHOR("Carlos Munoz <carlos@kenati.com>"); | |
852 | MODULE_DESCRIPTION("ALSA SoC SH7722 SIU driver"); | |
853 | MODULE_LICENSE("GPL"); |