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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> |
895d4509 GL |
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 | ||
f0fba2ad LG |
74 | struct siu_info *siu_i2s_data = NULL; |
75 | EXPORT_SYMBOL_GPL(siu_i2s_data); | |
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 | ||
115 | /* Turn on SIU clock */ | |
f0fba2ad | 116 | pm_runtime_get_sync(port_info->pcm->card->dev); |
895d4509 GL |
117 | |
118 | /* Issue software reset to siu */ | |
119 | siu_write32(base + SIU_SRCTL, 0); | |
120 | ||
121 | /* Wait for the reset to take effect */ | |
122 | udelay(1); | |
123 | ||
124 | port_info->stfifo = 0; | |
125 | port_info->trdat = 0; | |
126 | ||
127 | /* portA, portB, SIU operate */ | |
128 | siu_write32(base + SIU_SRCTL, 0x301); | |
129 | ||
130 | /* portA=256fs, portB=256fs */ | |
131 | siu_write32(base + SIU_CKCTL, 0x40400000); | |
132 | ||
133 | /* portA's BRG does not divide SIUCKA */ | |
134 | siu_write32(base + SIU_BRGASEL, 0); | |
135 | siu_write32(base + SIU_BRRA, 0); | |
136 | ||
137 | /* portB's BRG divides SIUCKB by half */ | |
138 | siu_write32(base + SIU_BRGBSEL, 1); | |
139 | siu_write32(base + SIU_BRRB, 0); | |
140 | ||
141 | siu_write32(base + SIU_IFCTL, 0x44440000); | |
142 | ||
143 | /* portA: 32 bit/fs, master; portB: 32 bit/fs, master */ | |
144 | siu_write32(base + SIU_SFORM, 0x0c0c0000); | |
145 | ||
146 | /* | |
147 | * Volume levels: looks like the DSP firmware implements volume controls | |
148 | * differently from what's described in the datasheet | |
149 | */ | |
150 | siu_write32(base + SIU_SBDVCA, port_info->playback.volume); | |
151 | siu_write32(base + SIU_SBDVCB, port_info->capture.volume); | |
152 | } | |
153 | ||
f0fba2ad | 154 | static void siu_dai_stop(struct siu_port *port_info) |
895d4509 | 155 | { |
f0fba2ad | 156 | struct siu_info *info = siu_i2s_data; |
895d4509 GL |
157 | u32 __iomem *base = info->reg; |
158 | ||
159 | /* SIU software reset */ | |
160 | siu_write32(base + SIU_SRCTL, 0); | |
161 | ||
162 | /* Turn off SIU clock */ | |
f0fba2ad | 163 | pm_runtime_put_sync(port_info->pcm->card->dev); |
895d4509 GL |
164 | } |
165 | ||
166 | static void siu_dai_spbAselect(struct siu_port *port_info) | |
167 | { | |
f0fba2ad | 168 | struct siu_info *info = siu_i2s_data; |
895d4509 GL |
169 | struct siu_firmware *fw = &info->fw; |
170 | u32 *ydef = fw->yram0; | |
171 | u32 idx; | |
172 | ||
173 | /* path A use */ | |
174 | if (!info->port_id) | |
175 | idx = 1; /* portA */ | |
176 | else | |
177 | idx = 2; /* portB */ | |
178 | ||
179 | ydef[0] = (fw->spbpar[idx].ab1a << 16) | | |
180 | (fw->spbpar[idx].ab0a << 8) | | |
181 | (fw->spbpar[idx].dir << 7) | 3; | |
182 | ydef[1] = fw->yram0[1]; /* 0x03000300 */ | |
183 | ydef[2] = (16 / 2) << 24; | |
184 | ydef[3] = fw->yram0[3]; /* 0 */ | |
185 | ydef[4] = fw->yram0[4]; /* 0 */ | |
186 | ydef[7] = fw->spbpar[idx].event; | |
187 | port_info->stfifo |= fw->spbpar[idx].stfifo; | |
188 | port_info->trdat |= fw->spbpar[idx].trdat; | |
189 | } | |
190 | ||
191 | static void siu_dai_spbBselect(struct siu_port *port_info) | |
192 | { | |
f0fba2ad | 193 | struct siu_info *info = siu_i2s_data; |
895d4509 GL |
194 | struct siu_firmware *fw = &info->fw; |
195 | u32 *ydef = fw->yram0; | |
196 | u32 idx; | |
197 | ||
198 | /* path B use */ | |
199 | if (!info->port_id) | |
200 | idx = 7; /* portA */ | |
201 | else | |
202 | idx = 8; /* portB */ | |
203 | ||
204 | ydef[5] = (fw->spbpar[idx].ab1a << 16) | | |
205 | (fw->spbpar[idx].ab0a << 8) | 1; | |
206 | ydef[6] = fw->spbpar[idx].event; | |
207 | port_info->stfifo |= fw->spbpar[idx].stfifo; | |
208 | port_info->trdat |= fw->spbpar[idx].trdat; | |
209 | } | |
210 | ||
211 | static void siu_dai_open(struct siu_stream *siu_stream) | |
212 | { | |
f0fba2ad | 213 | struct siu_info *info = siu_i2s_data; |
895d4509 GL |
214 | u32 __iomem *base = info->reg; |
215 | u32 srctl, ifctl; | |
216 | ||
217 | srctl = siu_read32(base + SIU_SRCTL); | |
218 | ifctl = siu_read32(base + SIU_IFCTL); | |
219 | ||
220 | switch (info->port_id) { | |
221 | case SIU_PORT_A: | |
222 | /* portA operates */ | |
223 | srctl |= 0x200; | |
224 | ifctl &= ~0xc2; | |
225 | break; | |
226 | case SIU_PORT_B: | |
227 | /* portB operates */ | |
228 | srctl |= 0x100; | |
229 | ifctl &= ~0x31; | |
230 | break; | |
231 | } | |
232 | ||
233 | siu_write32(base + SIU_SRCTL, srctl); | |
234 | /* Unmute and configure portA */ | |
235 | siu_write32(base + SIU_IFCTL, ifctl); | |
236 | } | |
237 | ||
238 | /* | |
239 | * At the moment only fixed Left-upper, Left-lower, Right-upper, Right-lower | |
240 | * packing is supported | |
241 | */ | |
242 | static void siu_dai_pcmdatapack(struct siu_stream *siu_stream) | |
243 | { | |
f0fba2ad | 244 | struct siu_info *info = siu_i2s_data; |
895d4509 GL |
245 | u32 __iomem *base = info->reg; |
246 | u32 dpak; | |
247 | ||
248 | dpak = siu_read32(base + SIU_DPAK); | |
249 | ||
250 | switch (info->port_id) { | |
251 | case SIU_PORT_A: | |
252 | dpak &= ~0xc0000000; | |
253 | break; | |
254 | case SIU_PORT_B: | |
255 | dpak &= ~0x00c00000; | |
256 | break; | |
257 | } | |
258 | ||
259 | siu_write32(base + SIU_DPAK, dpak); | |
260 | } | |
261 | ||
262 | static int siu_dai_spbstart(struct siu_port *port_info) | |
263 | { | |
f0fba2ad | 264 | struct siu_info *info = siu_i2s_data; |
895d4509 GL |
265 | u32 __iomem *base = info->reg; |
266 | struct siu_firmware *fw = &info->fw; | |
267 | u32 *ydef = fw->yram0; | |
268 | int cnt; | |
269 | u32 __iomem *add; | |
270 | u32 *ptr; | |
271 | ||
272 | /* Load SPB Program in PRAM */ | |
273 | ptr = fw->pram0; | |
274 | add = info->pram; | |
275 | for (cnt = 0; cnt < PRAM0_SIZE; cnt++, add++, ptr++) | |
276 | siu_write32(add, *ptr); | |
277 | ||
278 | ptr = fw->pram1; | |
279 | add = info->pram + (0x0100 / sizeof(u32)); | |
280 | for (cnt = 0; cnt < PRAM1_SIZE; cnt++, add++, ptr++) | |
281 | siu_write32(add, *ptr); | |
282 | ||
283 | /* XRAM initialization */ | |
284 | add = info->xram; | |
285 | for (cnt = 0; cnt < XRAM0_SIZE + XRAM1_SIZE + XRAM2_SIZE; cnt++, add++) | |
286 | siu_write32(add, 0); | |
287 | ||
288 | /* YRAM variable area initialization */ | |
289 | add = info->yram; | |
290 | for (cnt = 0; cnt < YRAM_DEF_SIZE; cnt++, add++) | |
291 | siu_write32(add, ydef[cnt]); | |
292 | ||
293 | /* YRAM FIR coefficient area initialization */ | |
294 | add = info->yram + (0x0200 / sizeof(u32)); | |
295 | for (cnt = 0; cnt < YRAM_FIR_SIZE; cnt++, add++) | |
296 | siu_write32(add, fw->yram_fir_coeff[cnt]); | |
297 | ||
298 | /* YRAM IIR coefficient area initialization */ | |
299 | add = info->yram + (0x0600 / sizeof(u32)); | |
300 | for (cnt = 0; cnt < YRAM_IIR_SIZE; cnt++, add++) | |
301 | siu_write32(add, 0); | |
302 | ||
303 | siu_write32(base + SIU_TRDAT, port_info->trdat); | |
304 | port_info->trdat = 0x0; | |
305 | ||
306 | ||
307 | /* SPB start condition: software */ | |
308 | siu_write32(base + SIU_SBACTIV, 0); | |
309 | /* Start SPB */ | |
310 | siu_write32(base + SIU_SBCTL, 0xc0000000); | |
311 | /* Wait for program to halt */ | |
312 | cnt = 0x10000; | |
313 | while (--cnt && siu_read32(base + SIU_SBCTL) != 0x80000000) | |
314 | cpu_relax(); | |
315 | ||
316 | if (!cnt) | |
317 | return -EBUSY; | |
318 | ||
319 | /* SPB program start address setting */ | |
320 | siu_write32(base + SIU_SBPSET, 0x00400000); | |
321 | /* SPB hardware start(FIFOCTL source) */ | |
322 | siu_write32(base + SIU_SBACTIV, 0xc0000000); | |
323 | ||
324 | return 0; | |
325 | } | |
326 | ||
327 | static void siu_dai_spbstop(struct siu_port *port_info) | |
328 | { | |
f0fba2ad | 329 | struct siu_info *info = siu_i2s_data; |
895d4509 GL |
330 | u32 __iomem *base = info->reg; |
331 | ||
332 | siu_write32(base + SIU_SBACTIV, 0); | |
333 | /* SPB stop */ | |
334 | siu_write32(base + SIU_SBCTL, 0); | |
335 | ||
336 | port_info->stfifo = 0; | |
337 | } | |
338 | ||
339 | /* API functions */ | |
340 | ||
341 | /* Playback and capture hardware properties are identical */ | |
342 | static struct snd_pcm_hardware siu_dai_pcm_hw = { | |
343 | .info = SNDRV_PCM_INFO_INTERLEAVED, | |
344 | .formats = SNDRV_PCM_FMTBIT_S16, | |
345 | .rates = SNDRV_PCM_RATE_8000_48000, | |
346 | .rate_min = 8000, | |
347 | .rate_max = 48000, | |
348 | .channels_min = 2, | |
349 | .channels_max = 2, | |
350 | .buffer_bytes_max = SIU_BUFFER_BYTES_MAX, | |
351 | .period_bytes_min = SIU_PERIOD_BYTES_MIN, | |
352 | .period_bytes_max = SIU_PERIOD_BYTES_MAX, | |
353 | .periods_min = SIU_PERIODS_MIN, | |
354 | .periods_max = SIU_PERIODS_MAX, | |
355 | }; | |
356 | ||
357 | static int siu_dai_info_volume(struct snd_kcontrol *kctrl, | |
358 | struct snd_ctl_elem_info *uinfo) | |
359 | { | |
360 | struct siu_port *port_info = snd_kcontrol_chip(kctrl); | |
361 | ||
362 | dev_dbg(port_info->pcm->card->dev, "%s\n", __func__); | |
363 | ||
364 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; | |
365 | uinfo->count = 2; | |
366 | uinfo->value.integer.min = 0; | |
367 | uinfo->value.integer.max = SIU_MAX_VOLUME; | |
368 | ||
369 | return 0; | |
370 | } | |
371 | ||
372 | static int siu_dai_get_volume(struct snd_kcontrol *kctrl, | |
373 | struct snd_ctl_elem_value *ucontrol) | |
374 | { | |
375 | struct siu_port *port_info = snd_kcontrol_chip(kctrl); | |
376 | struct device *dev = port_info->pcm->card->dev; | |
377 | u32 vol; | |
378 | ||
379 | dev_dbg(dev, "%s\n", __func__); | |
380 | ||
381 | switch (kctrl->private_value) { | |
382 | case VOLUME_PLAYBACK: | |
383 | /* Playback is always on port 0 */ | |
384 | vol = port_info->playback.volume; | |
385 | ucontrol->value.integer.value[0] = vol & 0xffff; | |
386 | ucontrol->value.integer.value[1] = vol >> 16 & 0xffff; | |
387 | break; | |
388 | case VOLUME_CAPTURE: | |
389 | /* Capture is always on port 1 */ | |
390 | vol = port_info->capture.volume; | |
391 | ucontrol->value.integer.value[0] = vol & 0xffff; | |
392 | ucontrol->value.integer.value[1] = vol >> 16 & 0xffff; | |
393 | break; | |
394 | default: | |
395 | dev_err(dev, "%s() invalid private_value=%ld\n", | |
396 | __func__, kctrl->private_value); | |
397 | return -EINVAL; | |
398 | } | |
399 | ||
400 | return 0; | |
401 | } | |
402 | ||
403 | static int siu_dai_put_volume(struct snd_kcontrol *kctrl, | |
404 | struct snd_ctl_elem_value *ucontrol) | |
405 | { | |
406 | struct siu_port *port_info = snd_kcontrol_chip(kctrl); | |
407 | struct device *dev = port_info->pcm->card->dev; | |
f0fba2ad | 408 | struct siu_info *info = siu_i2s_data; |
895d4509 GL |
409 | u32 __iomem *base = info->reg; |
410 | u32 new_vol; | |
411 | u32 cur_vol; | |
412 | ||
413 | dev_dbg(dev, "%s\n", __func__); | |
414 | ||
415 | if (ucontrol->value.integer.value[0] < 0 || | |
416 | ucontrol->value.integer.value[0] > SIU_MAX_VOLUME || | |
417 | ucontrol->value.integer.value[1] < 0 || | |
418 | ucontrol->value.integer.value[1] > SIU_MAX_VOLUME) | |
419 | return -EINVAL; | |
420 | ||
421 | new_vol = ucontrol->value.integer.value[0] | | |
422 | ucontrol->value.integer.value[1] << 16; | |
423 | ||
424 | /* See comment above - DSP firmware implementation */ | |
425 | switch (kctrl->private_value) { | |
426 | case VOLUME_PLAYBACK: | |
427 | /* Playback is always on port 0 */ | |
428 | cur_vol = port_info->playback.volume; | |
429 | siu_write32(base + SIU_SBDVCA, new_vol); | |
430 | port_info->playback.volume = new_vol; | |
431 | break; | |
432 | case VOLUME_CAPTURE: | |
433 | /* Capture is always on port 1 */ | |
434 | cur_vol = port_info->capture.volume; | |
435 | siu_write32(base + SIU_SBDVCB, new_vol); | |
436 | port_info->capture.volume = new_vol; | |
437 | break; | |
438 | default: | |
439 | dev_err(dev, "%s() invalid private_value=%ld\n", | |
440 | __func__, kctrl->private_value); | |
441 | return -EINVAL; | |
442 | } | |
443 | ||
444 | if (cur_vol != new_vol) | |
445 | return 1; | |
446 | ||
447 | return 0; | |
448 | } | |
449 | ||
450 | static struct snd_kcontrol_new playback_controls = { | |
451 | .iface = SNDRV_CTL_ELEM_IFACE_MIXER, | |
452 | .name = "PCM Playback Volume", | |
453 | .index = 0, | |
454 | .info = siu_dai_info_volume, | |
455 | .get = siu_dai_get_volume, | |
456 | .put = siu_dai_put_volume, | |
457 | .private_value = VOLUME_PLAYBACK, | |
458 | }; | |
459 | ||
460 | static struct snd_kcontrol_new capture_controls = { | |
461 | .iface = SNDRV_CTL_ELEM_IFACE_MIXER, | |
462 | .name = "PCM Capture Volume", | |
463 | .index = 0, | |
464 | .info = siu_dai_info_volume, | |
465 | .get = siu_dai_get_volume, | |
466 | .put = siu_dai_put_volume, | |
467 | .private_value = VOLUME_CAPTURE, | |
468 | }; | |
469 | ||
470 | int siu_init_port(int port, struct siu_port **port_info, struct snd_card *card) | |
471 | { | |
472 | struct device *dev = card->dev; | |
473 | struct snd_kcontrol *kctrl; | |
474 | int ret; | |
475 | ||
476 | *port_info = kzalloc(sizeof(**port_info), GFP_KERNEL); | |
477 | if (!*port_info) | |
478 | return -ENOMEM; | |
479 | ||
480 | dev_dbg(dev, "%s: port #%d@%p\n", __func__, port, *port_info); | |
481 | ||
482 | (*port_info)->playback.volume = DFLT_VOLUME_LEVEL; | |
483 | (*port_info)->capture.volume = DFLT_VOLUME_LEVEL; | |
484 | ||
485 | /* | |
486 | * Add mixer support. The SPB is used to change the volume. Both | |
487 | * ports use the same SPB. Therefore, we only register one | |
488 | * control instance since it will be used by both channels. | |
489 | * In error case we continue without controls. | |
490 | */ | |
491 | kctrl = snd_ctl_new1(&playback_controls, *port_info); | |
492 | ret = snd_ctl_add(card, kctrl); | |
493 | if (ret < 0) | |
494 | dev_err(dev, | |
495 | "failed to add playback controls %p port=%d err=%d\n", | |
496 | kctrl, port, ret); | |
497 | ||
498 | kctrl = snd_ctl_new1(&capture_controls, *port_info); | |
499 | ret = snd_ctl_add(card, kctrl); | |
500 | if (ret < 0) | |
501 | dev_err(dev, | |
502 | "failed to add capture controls %p port=%d err=%d\n", | |
503 | kctrl, port, ret); | |
504 | ||
505 | return 0; | |
506 | } | |
507 | ||
508 | void siu_free_port(struct siu_port *port_info) | |
509 | { | |
510 | kfree(port_info); | |
511 | } | |
512 | ||
513 | static int siu_dai_startup(struct snd_pcm_substream *substream, | |
514 | struct snd_soc_dai *dai) | |
515 | { | |
f0fba2ad | 516 | struct siu_info *info = snd_soc_dai_get_drvdata(dai); |
895d4509 GL |
517 | struct snd_pcm_runtime *rt = substream->runtime; |
518 | struct siu_port *port_info = siu_port_info(substream); | |
519 | int ret; | |
520 | ||
521 | dev_dbg(substream->pcm->card->dev, "%s: port=%d@%p\n", __func__, | |
522 | info->port_id, port_info); | |
523 | ||
524 | snd_soc_set_runtime_hwparams(substream, &siu_dai_pcm_hw); | |
525 | ||
526 | ret = snd_pcm_hw_constraint_integer(rt, SNDRV_PCM_HW_PARAM_PERIODS); | |
527 | if (unlikely(ret < 0)) | |
528 | return ret; | |
529 | ||
530 | siu_dai_start(port_info); | |
531 | ||
532 | return 0; | |
533 | } | |
534 | ||
535 | static void siu_dai_shutdown(struct snd_pcm_substream *substream, | |
536 | struct snd_soc_dai *dai) | |
537 | { | |
f0fba2ad | 538 | struct siu_info *info = snd_soc_dai_get_drvdata(dai); |
895d4509 GL |
539 | struct siu_port *port_info = siu_port_info(substream); |
540 | ||
541 | dev_dbg(substream->pcm->card->dev, "%s: port=%d@%p\n", __func__, | |
542 | info->port_id, port_info); | |
543 | ||
544 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
545 | port_info->play_cap &= ~PLAYBACK_ENABLED; | |
546 | else | |
547 | port_info->play_cap &= ~CAPTURE_ENABLED; | |
548 | ||
549 | /* Stop the siu if the other stream is not using it */ | |
550 | if (!port_info->play_cap) { | |
551 | /* during stmread or stmwrite ? */ | |
552 | BUG_ON(port_info->playback.rw_flg || port_info->capture.rw_flg); | |
553 | siu_dai_spbstop(port_info); | |
f0fba2ad | 554 | siu_dai_stop(port_info); |
895d4509 GL |
555 | } |
556 | } | |
557 | ||
558 | /* PCM part of siu_dai_playback_prepare() / siu_dai_capture_prepare() */ | |
559 | static int siu_dai_prepare(struct snd_pcm_substream *substream, | |
560 | struct snd_soc_dai *dai) | |
561 | { | |
f0fba2ad | 562 | struct siu_info *info = snd_soc_dai_get_drvdata(dai); |
895d4509 GL |
563 | struct snd_pcm_runtime *rt = substream->runtime; |
564 | struct siu_port *port_info = siu_port_info(substream); | |
565 | struct siu_stream *siu_stream; | |
566 | int self, ret; | |
567 | ||
568 | dev_dbg(substream->pcm->card->dev, | |
569 | "%s: port %d, active streams %lx, %d channels\n", | |
570 | __func__, info->port_id, port_info->play_cap, rt->channels); | |
571 | ||
572 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
573 | self = PLAYBACK_ENABLED; | |
574 | siu_stream = &port_info->playback; | |
575 | } else { | |
576 | self = CAPTURE_ENABLED; | |
577 | siu_stream = &port_info->capture; | |
578 | } | |
579 | ||
580 | /* Set up the siu if not already done */ | |
581 | if (!port_info->play_cap) { | |
582 | siu_stream->rw_flg = 0; /* stream-data transfer flag */ | |
583 | ||
584 | siu_dai_spbAselect(port_info); | |
585 | siu_dai_spbBselect(port_info); | |
586 | ||
587 | siu_dai_open(siu_stream); | |
588 | ||
589 | siu_dai_pcmdatapack(siu_stream); | |
590 | ||
591 | ret = siu_dai_spbstart(port_info); | |
592 | if (ret < 0) | |
593 | goto fail; | |
3ca34149 GL |
594 | } else { |
595 | ret = 0; | |
895d4509 GL |
596 | } |
597 | ||
598 | port_info->play_cap |= self; | |
599 | ||
600 | fail: | |
601 | return ret; | |
602 | } | |
603 | ||
604 | /* | |
605 | * SIU can set bus format to I2S / PCM / SPDIF independently for playback and | |
606 | * capture, however, the current API sets the bus format globally for a DAI. | |
607 | */ | |
608 | static int siu_dai_set_fmt(struct snd_soc_dai *dai, | |
609 | unsigned int fmt) | |
610 | { | |
f0fba2ad | 611 | struct siu_info *info = snd_soc_dai_get_drvdata(dai); |
895d4509 GL |
612 | u32 __iomem *base = info->reg; |
613 | u32 ifctl; | |
614 | ||
615 | dev_dbg(dai->dev, "%s: fmt 0x%x on port %d\n", | |
616 | __func__, fmt, info->port_id); | |
617 | ||
618 | if (info->port_id < 0) | |
619 | return -ENODEV; | |
620 | ||
621 | /* Here select between I2S / PCM / SPDIF */ | |
622 | switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { | |
623 | case SND_SOC_DAIFMT_I2S: | |
624 | ifctl = siu_flags[info->port_id].playback.i2s | | |
625 | siu_flags[info->port_id].capture.i2s; | |
626 | break; | |
627 | case SND_SOC_DAIFMT_LEFT_J: | |
628 | ifctl = siu_flags[info->port_id].playback.pcm | | |
629 | siu_flags[info->port_id].capture.pcm; | |
630 | break; | |
631 | /* SPDIF disabled - see comment at the top */ | |
632 | default: | |
633 | return -EINVAL; | |
634 | } | |
635 | ||
636 | ifctl |= ~(siu_flags[info->port_id].playback.mask | | |
637 | siu_flags[info->port_id].capture.mask) & | |
638 | siu_read32(base + SIU_IFCTL); | |
639 | siu_write32(base + SIU_IFCTL, ifctl); | |
640 | ||
641 | return 0; | |
642 | } | |
643 | ||
644 | static int siu_dai_set_sysclk(struct snd_soc_dai *dai, int clk_id, | |
645 | unsigned int freq, int dir) | |
646 | { | |
647 | struct clk *siu_clk, *parent_clk; | |
648 | char *siu_name, *parent_name; | |
649 | int ret; | |
650 | ||
651 | if (dir != SND_SOC_CLOCK_IN) | |
652 | return -EINVAL; | |
653 | ||
654 | dev_dbg(dai->dev, "%s: using clock %d\n", __func__, clk_id); | |
655 | ||
656 | switch (clk_id) { | |
657 | case SIU_CLKA_PLL: | |
658 | siu_name = "siua_clk"; | |
659 | parent_name = "pll_clk"; | |
660 | break; | |
661 | case SIU_CLKA_EXT: | |
662 | siu_name = "siua_clk"; | |
663 | parent_name = "siumcka_clk"; | |
664 | break; | |
665 | case SIU_CLKB_PLL: | |
666 | siu_name = "siub_clk"; | |
667 | parent_name = "pll_clk"; | |
668 | break; | |
669 | case SIU_CLKB_EXT: | |
670 | siu_name = "siub_clk"; | |
671 | parent_name = "siumckb_clk"; | |
672 | break; | |
673 | default: | |
674 | return -EINVAL; | |
675 | } | |
676 | ||
f0fba2ad | 677 | siu_clk = clk_get(dai->dev, siu_name); |
895d4509 GL |
678 | if (IS_ERR(siu_clk)) |
679 | return PTR_ERR(siu_clk); | |
680 | ||
f0fba2ad | 681 | parent_clk = clk_get(dai->dev, parent_name); |
895d4509 GL |
682 | if (!IS_ERR(parent_clk)) { |
683 | ret = clk_set_parent(siu_clk, parent_clk); | |
684 | if (!ret) | |
685 | clk_set_rate(siu_clk, freq); | |
686 | clk_put(parent_clk); | |
687 | } | |
688 | ||
689 | clk_put(siu_clk); | |
690 | ||
691 | return 0; | |
692 | } | |
693 | ||
694 | static struct snd_soc_dai_ops siu_dai_ops = { | |
695 | .startup = siu_dai_startup, | |
696 | .shutdown = siu_dai_shutdown, | |
697 | .prepare = siu_dai_prepare, | |
698 | .set_sysclk = siu_dai_set_sysclk, | |
699 | .set_fmt = siu_dai_set_fmt, | |
700 | }; | |
701 | ||
f0fba2ad LG |
702 | static struct snd_soc_dai_driver siu_i2s_dai = { |
703 | .name = "sui-i2s-dai", | |
895d4509 GL |
704 | .playback = { |
705 | .channels_min = 2, | |
706 | .channels_max = 2, | |
707 | .formats = SNDRV_PCM_FMTBIT_S16, | |
708 | .rates = SNDRV_PCM_RATE_8000_48000, | |
709 | }, | |
710 | .capture = { | |
711 | .channels_min = 2, | |
712 | .channels_max = 2, | |
713 | .formats = SNDRV_PCM_FMTBIT_S16, | |
714 | .rates = SNDRV_PCM_RATE_8000_48000, | |
715 | }, | |
716 | .ops = &siu_dai_ops, | |
717 | }; | |
895d4509 GL |
718 | |
719 | static int __devinit siu_probe(struct platform_device *pdev) | |
720 | { | |
721 | const struct firmware *fw_entry; | |
722 | struct resource *res, *region; | |
723 | struct siu_info *info; | |
724 | int ret; | |
725 | ||
726 | info = kmalloc(sizeof(*info), GFP_KERNEL); | |
727 | if (!info) | |
728 | return -ENOMEM; | |
f0fba2ad | 729 | siu_i2s_data = info; |
895d4509 GL |
730 | |
731 | ret = request_firmware(&fw_entry, "siu_spb.bin", &pdev->dev); | |
732 | if (ret) | |
733 | goto ereqfw; | |
734 | ||
735 | /* | |
736 | * Loaded firmware is "const" - read only, but we have to modify it in | |
737 | * snd_siu_sh7343_spbAselect() and snd_siu_sh7343_spbBselect() | |
738 | */ | |
739 | memcpy(&info->fw, fw_entry->data, fw_entry->size); | |
740 | ||
741 | release_firmware(fw_entry); | |
742 | ||
743 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
744 | if (!res) { | |
745 | ret = -ENODEV; | |
746 | goto egetres; | |
747 | } | |
748 | ||
749 | region = request_mem_region(res->start, resource_size(res), | |
750 | pdev->name); | |
751 | if (!region) { | |
752 | dev_err(&pdev->dev, "SIU region already claimed\n"); | |
753 | ret = -EBUSY; | |
754 | goto ereqmemreg; | |
755 | } | |
756 | ||
757 | ret = -ENOMEM; | |
758 | info->pram = ioremap(res->start, PRAM_SIZE); | |
759 | if (!info->pram) | |
760 | goto emappram; | |
761 | info->xram = ioremap(res->start + XRAM_OFFSET, XRAM_SIZE); | |
762 | if (!info->xram) | |
763 | goto emapxram; | |
764 | info->yram = ioremap(res->start + YRAM_OFFSET, YRAM_SIZE); | |
765 | if (!info->yram) | |
766 | goto emapyram; | |
767 | info->reg = ioremap(res->start + REG_OFFSET, resource_size(res) - | |
768 | REG_OFFSET); | |
769 | if (!info->reg) | |
770 | goto emapreg; | |
771 | ||
f0fba2ad | 772 | dev_set_drvdata(&pdev->dev, info); |
895d4509 | 773 | |
f0fba2ad LG |
774 | /* register using ARRAY version so we can keep dai name */ |
775 | ret = snd_soc_register_dais(&pdev->dev, &siu_i2s_dai, 1); | |
895d4509 GL |
776 | if (ret < 0) |
777 | goto edaiinit; | |
778 | ||
f0fba2ad | 779 | ret = snd_soc_register_platform(&pdev->dev, &siu_platform); |
895d4509 GL |
780 | if (ret < 0) |
781 | goto esocregp; | |
782 | ||
783 | pm_runtime_enable(&pdev->dev); | |
784 | ||
785 | return ret; | |
786 | ||
787 | esocregp: | |
f0fba2ad | 788 | snd_soc_unregister_dai(&pdev->dev); |
895d4509 GL |
789 | edaiinit: |
790 | iounmap(info->reg); | |
791 | emapreg: | |
792 | iounmap(info->yram); | |
793 | emapyram: | |
794 | iounmap(info->xram); | |
795 | emapxram: | |
796 | iounmap(info->pram); | |
797 | emappram: | |
798 | release_mem_region(res->start, resource_size(res)); | |
799 | ereqmemreg: | |
800 | egetres: | |
801 | ereqfw: | |
802 | kfree(info); | |
803 | ||
804 | return ret; | |
805 | } | |
806 | ||
807 | static int __devexit siu_remove(struct platform_device *pdev) | |
808 | { | |
f0fba2ad | 809 | struct siu_info *info = dev_get_drvdata(&pdev->dev); |
895d4509 GL |
810 | struct resource *res; |
811 | ||
812 | pm_runtime_disable(&pdev->dev); | |
813 | ||
f0fba2ad LG |
814 | snd_soc_unregister_platform(&pdev->dev); |
815 | snd_soc_unregister_dai(&pdev->dev); | |
895d4509 GL |
816 | |
817 | iounmap(info->reg); | |
818 | iounmap(info->yram); | |
819 | iounmap(info->xram); | |
820 | iounmap(info->pram); | |
821 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
822 | if (res) | |
823 | release_mem_region(res->start, resource_size(res)); | |
824 | kfree(info); | |
825 | ||
826 | return 0; | |
827 | } | |
828 | ||
829 | static struct platform_driver siu_driver = { | |
830 | .driver = { | |
f0fba2ad | 831 | .name = "siu-pcm-audio", |
895d4509 GL |
832 | }, |
833 | .probe = siu_probe, | |
834 | .remove = __devexit_p(siu_remove), | |
835 | }; | |
836 | ||
837 | static int __init siu_init(void) | |
838 | { | |
839 | return platform_driver_register(&siu_driver); | |
840 | } | |
841 | ||
842 | static void __exit siu_exit(void) | |
843 | { | |
844 | platform_driver_unregister(&siu_driver); | |
845 | } | |
846 | ||
847 | module_init(siu_init) | |
848 | module_exit(siu_exit) | |
849 | ||
850 | MODULE_AUTHOR("Carlos Munoz <carlos@kenati.com>"); | |
851 | MODULE_DESCRIPTION("ALSA SoC SH7722 SIU driver"); | |
852 | MODULE_LICENSE("GPL"); |