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db2a4165 FM |
1 | /* |
2 | * soc-core.c -- ALSA SoC Audio Layer | |
3 | * | |
4 | * Copyright 2005 Wolfson Microelectronics PLC. | |
5 | * Author: Liam Girdwood | |
6 | * liam.girdwood@wolfsonmicro.com or linux@wolfsonmicro.com | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify it | |
9 | * under the terms of the GNU General Public License as published by the | |
10 | * Free Software Foundation; either version 2 of the License, or (at your | |
11 | * option) any later version. | |
12 | * | |
13 | * Revision history | |
14 | * 12th Aug 2005 Initial version. | |
15 | * 25th Oct 2005 Working Codec, Interface and Platform registration. | |
16 | * | |
17 | * TODO: | |
18 | * o Add hw rules to enforce rates, etc. | |
19 | * o More testing with other codecs/machines. | |
20 | * o Add more codecs and platforms to ensure good API coverage. | |
21 | * o Support TDM on PCM and I2S | |
22 | */ | |
23 | ||
24 | #include <linux/module.h> | |
25 | #include <linux/moduleparam.h> | |
26 | #include <linux/init.h> | |
27 | #include <linux/delay.h> | |
28 | #include <linux/pm.h> | |
29 | #include <linux/bitops.h> | |
30 | #include <linux/platform_device.h> | |
31 | #include <sound/driver.h> | |
32 | #include <sound/core.h> | |
33 | #include <sound/pcm.h> | |
34 | #include <sound/pcm_params.h> | |
35 | #include <sound/soc.h> | |
36 | #include <sound/soc-dapm.h> | |
37 | #include <sound/initval.h> | |
38 | ||
39 | /* debug */ | |
40 | #define SOC_DEBUG 0 | |
41 | #if SOC_DEBUG | |
42 | #define dbg(format, arg...) printk(format, ## arg) | |
43 | #else | |
44 | #define dbg(format, arg...) | |
45 | #endif | |
46 | /* debug DAI capabilities matching */ | |
47 | #define SOC_DEBUG_DAI 0 | |
48 | #if SOC_DEBUG_DAI | |
49 | #define dbgc(format, arg...) printk(format, ## arg) | |
50 | #else | |
51 | #define dbgc(format, arg...) | |
52 | #endif | |
53 | ||
54 | static DEFINE_MUTEX(pcm_mutex); | |
55 | static DEFINE_MUTEX(io_mutex); | |
56 | static struct workqueue_struct *soc_workq; | |
57 | static struct work_struct soc_stream_work; | |
58 | static DECLARE_WAIT_QUEUE_HEAD(soc_pm_waitq); | |
59 | ||
60 | /* supported sample rates */ | |
61 | /* ATTENTION: these values depend on the definition in pcm.h! */ | |
62 | static const unsigned int rates[] = { | |
63 | 5512, 8000, 11025, 16000, 22050, 32000, 44100, | |
64 | 48000, 64000, 88200, 96000, 176400, 192000 | |
65 | }; | |
66 | ||
67 | /* | |
68 | * This is a timeout to do a DAPM powerdown after a stream is closed(). | |
69 | * It can be used to eliminate pops between different playback streams, e.g. | |
70 | * between two audio tracks. | |
71 | */ | |
72 | static int pmdown_time = 5000; | |
73 | module_param(pmdown_time, int, 0); | |
74 | MODULE_PARM_DESC(pmdown_time, "DAPM stream powerdown time (msecs)"); | |
75 | ||
76 | #ifdef CONFIG_SND_SOC_AC97_BUS | |
77 | /* unregister ac97 codec */ | |
78 | static int soc_ac97_dev_unregister(struct snd_soc_codec *codec) | |
79 | { | |
80 | if (codec->ac97->dev.bus) | |
81 | device_unregister(&codec->ac97->dev); | |
82 | return 0; | |
83 | } | |
84 | ||
85 | /* stop no dev release warning */ | |
86 | static void soc_ac97_device_release(struct device *dev){} | |
87 | ||
88 | /* register ac97 codec to bus */ | |
89 | static int soc_ac97_dev_register(struct snd_soc_codec *codec) | |
90 | { | |
91 | int err; | |
92 | ||
93 | codec->ac97->dev.bus = &ac97_bus_type; | |
94 | codec->ac97->dev.parent = NULL; | |
95 | codec->ac97->dev.release = soc_ac97_device_release; | |
96 | ||
97 | snprintf(codec->ac97->dev.bus_id, BUS_ID_SIZE, "%d-%d:%s", | |
98 | codec->card->number, 0, codec->name); | |
99 | err = device_register(&codec->ac97->dev); | |
100 | if (err < 0) { | |
101 | snd_printk(KERN_ERR "Can't register ac97 bus\n"); | |
102 | codec->ac97->dev.bus = NULL; | |
103 | return err; | |
104 | } | |
105 | return 0; | |
106 | } | |
107 | #endif | |
108 | ||
109 | static inline const char* get_dai_name(int type) | |
110 | { | |
111 | switch(type) { | |
112 | case SND_SOC_DAI_AC97: | |
113 | return "AC97"; | |
114 | case SND_SOC_DAI_I2S: | |
115 | return "I2S"; | |
116 | case SND_SOC_DAI_PCM: | |
117 | return "PCM"; | |
118 | } | |
119 | return NULL; | |
120 | } | |
121 | ||
122 | /* get rate format from rate */ | |
123 | static inline int soc_get_rate_format(int rate) | |
124 | { | |
125 | int i; | |
126 | ||
127 | for (i = 0; i < ARRAY_SIZE(rates); i++) { | |
128 | if (rates[i] == rate) | |
129 | return 1 << i; | |
130 | } | |
131 | return 0; | |
132 | } | |
133 | ||
134 | /* gets the audio system mclk/sysclk for the given parameters */ | |
135 | static unsigned inline int soc_get_mclk(struct snd_soc_pcm_runtime *rtd, | |
136 | struct snd_soc_clock_info *info) | |
137 | { | |
138 | struct snd_soc_device *socdev = rtd->socdev; | |
139 | struct snd_soc_machine *machine = socdev->machine; | |
140 | int i; | |
141 | ||
142 | /* find the matching machine config and get it's mclk for the given | |
143 | * sample rate and hardware format */ | |
144 | for(i = 0; i < machine->num_links; i++) { | |
145 | if (machine->dai_link[i].cpu_dai == rtd->cpu_dai && | |
146 | machine->dai_link[i].config_sysclk) | |
147 | return machine->dai_link[i].config_sysclk(rtd, info); | |
148 | } | |
149 | return 0; | |
150 | } | |
151 | ||
152 | /* changes a bitclk multiplier mask to a divider mask */ | |
153 | static u16 soc_bfs_mult_to_div(u16 bfs, int rate, unsigned int mclk, | |
154 | unsigned int pcmfmt, unsigned int chn) | |
155 | { | |
156 | int i, j; | |
157 | u16 bfs_ = 0; | |
158 | int size = snd_pcm_format_physical_width(pcmfmt), min = 0; | |
159 | ||
160 | if (size <= 0) | |
161 | return 0; | |
162 | ||
163 | /* the minimum bit clock that has enough bandwidth */ | |
164 | min = size * rate * chn; | |
165 | dbgc("mult --> div min bclk %d with mclk %d\n", min, mclk); | |
166 | ||
167 | for (i = 0; i < 16; i++) { | |
168 | if ((bfs >> i) & 0x1) { | |
169 | j = rate * SND_SOC_FSB_REAL(1<<i); | |
170 | ||
171 | if (j >= min) { | |
172 | bfs_ |= SND_SOC_FSBD(mclk/j); | |
173 | dbgc("mult --> div support mult %d\n", | |
174 | SND_SOC_FSB_REAL(1<<i)); | |
175 | } | |
176 | } | |
177 | } | |
178 | ||
179 | return bfs_; | |
180 | } | |
181 | ||
182 | /* changes a bitclk divider mask to a multiplier mask */ | |
183 | static u16 soc_bfs_div_to_mult(u16 bfs, int rate, unsigned int mclk, | |
184 | unsigned int pcmfmt, unsigned int chn) | |
185 | { | |
186 | int i, j; | |
187 | u16 bfs_ = 0; | |
188 | ||
189 | int size = snd_pcm_format_physical_width(pcmfmt), min = 0; | |
190 | ||
191 | if (size <= 0) | |
192 | return 0; | |
193 | ||
194 | /* the minimum bit clock that has enough bandwidth */ | |
195 | min = size * rate * chn; | |
196 | dbgc("div to mult min bclk %d with mclk %d\n", min, mclk); | |
197 | ||
198 | for (i = 0; i < 16; i++) { | |
199 | if ((bfs >> i) & 0x1) { | |
200 | j = mclk / (SND_SOC_FSBD_REAL(1<<i)); | |
201 | if (j >= min) { | |
202 | bfs_ |= SND_SOC_FSB(j/rate); | |
203 | dbgc("div --> mult support div %d\n", | |
204 | SND_SOC_FSBD_REAL(1<<i)); | |
205 | } | |
206 | } | |
207 | } | |
208 | ||
209 | return bfs_; | |
210 | } | |
211 | ||
212 | /* Matches codec DAI and SoC CPU DAI hardware parameters */ | |
213 | static int soc_hw_match_params(struct snd_pcm_substream *substream, | |
214 | struct snd_pcm_hw_params *params) | |
215 | { | |
216 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
217 | struct snd_soc_dai_mode *codec_dai_mode = NULL; | |
218 | struct snd_soc_dai_mode *cpu_dai_mode = NULL; | |
219 | struct snd_soc_clock_info clk_info; | |
220 | unsigned int fs, mclk, codec_bfs, cpu_bfs, rate = params_rate(params), | |
221 | chn, j, k, cpu_bclk, codec_bclk, pcmrate; | |
222 | u16 fmt = 0; | |
223 | ||
224 | dbg("asoc: match version %s\n", SND_SOC_VERSION); | |
225 | clk_info.rate = rate; | |
226 | pcmrate = soc_get_rate_format(rate); | |
227 | ||
228 | /* try and find a match from the codec and cpu DAI capabilities */ | |
229 | for (j = 0; j < rtd->codec_dai->caps.num_modes; j++) { | |
230 | for (k = 0; k < rtd->cpu_dai->caps.num_modes; k++) { | |
231 | codec_dai_mode = &rtd->codec_dai->caps.mode[j]; | |
232 | cpu_dai_mode = &rtd->cpu_dai->caps.mode[k]; | |
233 | ||
234 | if (!(codec_dai_mode->pcmrate & cpu_dai_mode->pcmrate & | |
235 | pcmrate)) { | |
236 | dbgc("asoc: DAI[%d:%d] failed to match rate\n", j, k); | |
237 | continue; | |
238 | } | |
239 | ||
240 | fmt = codec_dai_mode->fmt & cpu_dai_mode->fmt; | |
241 | if (!(fmt & SND_SOC_DAIFMT_FORMAT_MASK)) { | |
242 | dbgc("asoc: DAI[%d:%d] failed to match format\n", j, k); | |
243 | continue; | |
244 | } | |
245 | ||
246 | if (!(fmt & SND_SOC_DAIFMT_CLOCK_MASK)) { | |
247 | dbgc("asoc: DAI[%d:%d] failed to match clock masters\n", | |
248 | j, k); | |
249 | continue; | |
250 | } | |
251 | ||
252 | if (!(fmt & SND_SOC_DAIFMT_INV_MASK)) { | |
253 | dbgc("asoc: DAI[%d:%d] failed to match invert\n", j, k); | |
254 | continue; | |
255 | } | |
256 | ||
257 | if (!(codec_dai_mode->pcmfmt & cpu_dai_mode->pcmfmt)) { | |
258 | dbgc("asoc: DAI[%d:%d] failed to match pcm format\n", j, k); | |
259 | continue; | |
260 | } | |
261 | ||
262 | if (!(codec_dai_mode->pcmdir & cpu_dai_mode->pcmdir)) { | |
263 | dbgc("asoc: DAI[%d:%d] failed to match direction\n", j, k); | |
264 | continue; | |
265 | } | |
266 | ||
267 | /* todo - still need to add tdm selection */ | |
268 | rtd->cpu_dai->dai_runtime.fmt = | |
269 | rtd->codec_dai->dai_runtime.fmt = | |
270 | 1 << (ffs(fmt & SND_SOC_DAIFMT_FORMAT_MASK) -1) | | |
271 | 1 << (ffs(fmt & SND_SOC_DAIFMT_CLOCK_MASK) - 1) | | |
272 | 1 << (ffs(fmt & SND_SOC_DAIFMT_INV_MASK) - 1); | |
273 | clk_info.bclk_master = | |
274 | rtd->cpu_dai->dai_runtime.fmt & SND_SOC_DAIFMT_CLOCK_MASK; | |
275 | ||
276 | /* make sure the ratio between rate and master | |
277 | * clock is acceptable*/ | |
278 | fs = (cpu_dai_mode->fs & codec_dai_mode->fs); | |
279 | if (fs == 0) { | |
280 | dbgc("asoc: DAI[%d:%d] failed to match FS\n", j, k); | |
281 | continue; | |
282 | } | |
283 | clk_info.fs = rtd->cpu_dai->dai_runtime.fs = | |
284 | rtd->codec_dai->dai_runtime.fs = fs; | |
285 | ||
286 | /* calculate audio system clocking using slowest clocks possible*/ | |
287 | mclk = soc_get_mclk(rtd, &clk_info); | |
288 | if (mclk == 0) { | |
289 | dbgc("asoc: DAI[%d:%d] configuration not clockable\n", j, k); | |
290 | dbgc("asoc: rate %d fs %d master %x\n", rate, fs, | |
291 | clk_info.bclk_master); | |
292 | continue; | |
293 | } | |
294 | ||
295 | /* calculate word size (per channel) and frame size */ | |
296 | rtd->codec_dai->dai_runtime.pcmfmt = | |
297 | rtd->cpu_dai->dai_runtime.pcmfmt = | |
298 | 1 << params_format(params); | |
299 | ||
300 | chn = params_channels(params); | |
301 | /* i2s always has left and right */ | |
302 | if (params_channels(params) == 1 && | |
303 | rtd->cpu_dai->dai_runtime.fmt & (SND_SOC_DAIFMT_I2S | | |
304 | SND_SOC_DAIFMT_RIGHT_J | SND_SOC_DAIFMT_LEFT_J)) | |
305 | chn <<= 1; | |
306 | ||
307 | /* Calculate bfs - the ratio between bitclock and the sample rate | |
308 | * We must take into consideration the dividers and multipliers | |
309 | * used in the codec and cpu DAI modes. We always choose the | |
310 | * lowest possible clocks to reduce power. | |
311 | */ | |
312 | if (codec_dai_mode->flags & cpu_dai_mode->flags & | |
313 | SND_SOC_DAI_BFS_DIV) { | |
314 | /* cpu & codec bfs dividers */ | |
315 | rtd->cpu_dai->dai_runtime.bfs = | |
316 | rtd->codec_dai->dai_runtime.bfs = | |
317 | 1 << (fls(codec_dai_mode->bfs & cpu_dai_mode->bfs) - 1); | |
318 | } else if (codec_dai_mode->flags & SND_SOC_DAI_BFS_DIV) { | |
319 | /* normalise bfs codec divider & cpu mult */ | |
320 | codec_bfs = soc_bfs_div_to_mult(codec_dai_mode->bfs, rate, | |
321 | mclk, rtd->codec_dai->dai_runtime.pcmfmt, chn); | |
322 | rtd->cpu_dai->dai_runtime.bfs = | |
323 | 1 << (ffs(codec_bfs & cpu_dai_mode->bfs) - 1); | |
324 | cpu_bfs = soc_bfs_mult_to_div(cpu_dai_mode->bfs, rate, mclk, | |
325 | rtd->codec_dai->dai_runtime.pcmfmt, chn); | |
326 | rtd->codec_dai->dai_runtime.bfs = | |
327 | 1 << (fls(codec_dai_mode->bfs & cpu_bfs) - 1); | |
328 | } else if (cpu_dai_mode->flags & SND_SOC_DAI_BFS_DIV) { | |
329 | /* normalise bfs codec mult & cpu divider */ | |
330 | codec_bfs = soc_bfs_mult_to_div(codec_dai_mode->bfs, rate, | |
331 | mclk, rtd->codec_dai->dai_runtime.pcmfmt, chn); | |
332 | rtd->cpu_dai->dai_runtime.bfs = | |
333 | 1 << (fls(codec_bfs & cpu_dai_mode->bfs) -1); | |
334 | cpu_bfs = soc_bfs_div_to_mult(cpu_dai_mode->bfs, rate, mclk, | |
335 | rtd->codec_dai->dai_runtime.pcmfmt, chn); | |
336 | rtd->codec_dai->dai_runtime.bfs = | |
337 | 1 << (ffs(codec_dai_mode->bfs & cpu_bfs) -1); | |
338 | } else { | |
339 | /* codec & cpu bfs rate multipliers */ | |
340 | rtd->cpu_dai->dai_runtime.bfs = | |
341 | rtd->codec_dai->dai_runtime.bfs = | |
342 | 1 << (ffs(codec_dai_mode->bfs & cpu_dai_mode->bfs) -1); | |
343 | } | |
344 | ||
345 | /* make sure the bit clock speed is acceptable */ | |
346 | if (!rtd->cpu_dai->dai_runtime.bfs || | |
347 | !rtd->codec_dai->dai_runtime.bfs) { | |
348 | dbgc("asoc: DAI[%d:%d] failed to match BFS\n", j, k); | |
349 | dbgc("asoc: cpu_dai %x codec %x\n", | |
350 | rtd->cpu_dai->dai_runtime.bfs, | |
351 | rtd->codec_dai->dai_runtime.bfs); | |
352 | dbgc("asoc: mclk %d hwfmt %x\n", mclk, fmt); | |
353 | continue; | |
354 | } | |
355 | ||
356 | goto found; | |
357 | } | |
358 | } | |
359 | printk(KERN_ERR "asoc: no matching DAI found between codec and CPU\n"); | |
360 | return -EINVAL; | |
361 | ||
362 | found: | |
363 | /* we have matching DAI's, so complete the runtime info */ | |
364 | rtd->codec_dai->dai_runtime.pcmrate = | |
365 | rtd->cpu_dai->dai_runtime.pcmrate = | |
366 | soc_get_rate_format(rate); | |
367 | ||
368 | rtd->codec_dai->dai_runtime.priv = codec_dai_mode->priv; | |
369 | rtd->cpu_dai->dai_runtime.priv = cpu_dai_mode->priv; | |
370 | rtd->codec_dai->dai_runtime.flags = codec_dai_mode->flags; | |
371 | rtd->cpu_dai->dai_runtime.flags = cpu_dai_mode->flags; | |
372 | ||
373 | /* for debug atm */ | |
374 | dbg("asoc: DAI[%d:%d] Match OK\n", j, k); | |
375 | if (rtd->codec_dai->dai_runtime.flags == SND_SOC_DAI_BFS_DIV) { | |
376 | codec_bclk = (rtd->codec_dai->dai_runtime.fs * params_rate(params)) / | |
377 | SND_SOC_FSBD_REAL(rtd->codec_dai->dai_runtime.bfs); | |
378 | dbg("asoc: codec fs %d mclk %d bfs div %d bclk %d\n", | |
379 | rtd->codec_dai->dai_runtime.fs, mclk, | |
380 | SND_SOC_FSBD_REAL(rtd->codec_dai->dai_runtime.bfs), codec_bclk); | |
381 | } else { | |
382 | codec_bclk = params_rate(params) * | |
383 | SND_SOC_FSB_REAL(rtd->codec_dai->dai_runtime.bfs); | |
384 | dbg("asoc: codec fs %d mclk %d bfs mult %d bclk %d\n", | |
385 | rtd->codec_dai->dai_runtime.fs, mclk, | |
386 | SND_SOC_FSB_REAL(rtd->codec_dai->dai_runtime.bfs), codec_bclk); | |
387 | } | |
388 | if (rtd->cpu_dai->dai_runtime.flags == SND_SOC_DAI_BFS_DIV) { | |
389 | cpu_bclk = (rtd->cpu_dai->dai_runtime.fs * params_rate(params)) / | |
390 | SND_SOC_FSBD_REAL(rtd->cpu_dai->dai_runtime.bfs); | |
391 | dbg("asoc: cpu fs %d mclk %d bfs div %d bclk %d\n", | |
392 | rtd->cpu_dai->dai_runtime.fs, mclk, | |
393 | SND_SOC_FSBD_REAL(rtd->cpu_dai->dai_runtime.bfs), cpu_bclk); | |
394 | } else { | |
395 | cpu_bclk = params_rate(params) * | |
396 | SND_SOC_FSB_REAL(rtd->cpu_dai->dai_runtime.bfs); | |
397 | dbg("asoc: cpu fs %d mclk %d bfs mult %d bclk %d\n", | |
398 | rtd->cpu_dai->dai_runtime.fs, mclk, | |
399 | SND_SOC_FSB_REAL(rtd->cpu_dai->dai_runtime.bfs), cpu_bclk); | |
400 | } | |
401 | ||
402 | /* | |
403 | * Check we have matching bitclocks. If we don't then it means the | |
404 | * sysclock returned by either the codec or cpu DAI (selected by the | |
405 | * machine sysclock function) is wrong compared with the supported DAI | |
406 | * modes for the codec or cpu DAI. | |
407 | */ | |
408 | if (cpu_bclk != codec_bclk){ | |
409 | printk(KERN_ERR | |
410 | "asoc: codec and cpu bitclocks differ, audio may be wrong speed\n" | |
411 | ); | |
412 | printk(KERN_ERR "asoc: codec %d != cpu %d\n", codec_bclk, cpu_bclk); | |
413 | } | |
414 | ||
415 | switch(rtd->cpu_dai->dai_runtime.fmt & SND_SOC_DAIFMT_CLOCK_MASK) { | |
416 | case SND_SOC_DAIFMT_CBM_CFM: | |
417 | dbg("asoc: DAI codec BCLK master, LRC master\n"); | |
418 | break; | |
419 | case SND_SOC_DAIFMT_CBS_CFM: | |
420 | dbg("asoc: DAI codec BCLK slave, LRC master\n"); | |
421 | break; | |
422 | case SND_SOC_DAIFMT_CBM_CFS: | |
423 | dbg("asoc: DAI codec BCLK master, LRC slave\n"); | |
424 | break; | |
425 | case SND_SOC_DAIFMT_CBS_CFS: | |
426 | dbg("asoc: DAI codec BCLK slave, LRC slave\n"); | |
427 | break; | |
428 | } | |
429 | dbg("asoc: mode %x, invert %x\n", | |
430 | rtd->cpu_dai->dai_runtime.fmt & SND_SOC_DAIFMT_FORMAT_MASK, | |
431 | rtd->cpu_dai->dai_runtime.fmt & SND_SOC_DAIFMT_INV_MASK); | |
432 | dbg("asoc: audio rate %d chn %d fmt %x\n", params_rate(params), | |
433 | params_channels(params), params_format(params)); | |
434 | ||
435 | return 0; | |
436 | } | |
437 | ||
438 | static inline u32 get_rates(struct snd_soc_dai_mode *modes, int nmodes) | |
439 | { | |
440 | int i; | |
441 | u32 rates = 0; | |
442 | ||
443 | for(i = 0; i < nmodes; i++) | |
444 | rates |= modes[i].pcmrate; | |
445 | ||
446 | return rates; | |
447 | } | |
448 | ||
449 | static inline u64 get_formats(struct snd_soc_dai_mode *modes, int nmodes) | |
450 | { | |
451 | int i; | |
452 | u64 formats = 0; | |
453 | ||
454 | for(i = 0; i < nmodes; i++) | |
455 | formats |= modes[i].pcmfmt; | |
456 | ||
457 | return formats; | |
458 | } | |
459 | ||
460 | /* | |
461 | * Called by ALSA when a PCM substream is opened, the runtime->hw record is | |
462 | * then initialized and any private data can be allocated. This also calls | |
463 | * startup for the cpu DAI, platform, machine and codec DAI. | |
464 | */ | |
465 | static int soc_pcm_open(struct snd_pcm_substream *substream) | |
466 | { | |
467 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
468 | struct snd_soc_device *socdev = rtd->socdev; | |
469 | struct snd_pcm_runtime *runtime = substream->runtime; | |
470 | struct snd_soc_machine *machine = socdev->machine; | |
471 | struct snd_soc_platform *platform = socdev->platform; | |
472 | struct snd_soc_codec_dai *codec_dai = rtd->codec_dai; | |
473 | struct snd_soc_cpu_dai *cpu_dai = rtd->cpu_dai; | |
474 | int ret = 0; | |
475 | ||
476 | mutex_lock(&pcm_mutex); | |
477 | ||
478 | /* startup the audio subsystem */ | |
479 | if (rtd->cpu_dai->ops.startup) { | |
480 | ret = rtd->cpu_dai->ops.startup(substream); | |
481 | if (ret < 0) { | |
482 | printk(KERN_ERR "asoc: can't open interface %s\n", | |
483 | rtd->cpu_dai->name); | |
484 | goto out; | |
485 | } | |
486 | } | |
487 | ||
488 | if (platform->pcm_ops->open) { | |
489 | ret = platform->pcm_ops->open(substream); | |
490 | if (ret < 0) { | |
491 | printk(KERN_ERR "asoc: can't open platform %s\n", platform->name); | |
492 | goto platform_err; | |
493 | } | |
494 | } | |
495 | ||
496 | if (machine->ops && machine->ops->startup) { | |
497 | ret = machine->ops->startup(substream); | |
498 | if (ret < 0) { | |
499 | printk(KERN_ERR "asoc: %s startup failed\n", machine->name); | |
500 | goto machine_err; | |
501 | } | |
502 | } | |
503 | ||
504 | if (rtd->codec_dai->ops.startup) { | |
505 | ret = rtd->codec_dai->ops.startup(substream); | |
506 | if (ret < 0) { | |
507 | printk(KERN_ERR "asoc: can't open codec %s\n", | |
508 | rtd->codec_dai->name); | |
509 | goto codec_dai_err; | |
510 | } | |
511 | } | |
512 | ||
513 | /* create runtime params from DMA, codec and cpu DAI */ | |
514 | if (runtime->hw.rates) | |
515 | runtime->hw.rates &= | |
516 | get_rates(codec_dai->caps.mode, codec_dai->caps.num_modes) & | |
517 | get_rates(cpu_dai->caps.mode, cpu_dai->caps.num_modes); | |
518 | else | |
519 | runtime->hw.rates = | |
520 | get_rates(codec_dai->caps.mode, codec_dai->caps.num_modes) & | |
521 | get_rates(cpu_dai->caps.mode, cpu_dai->caps.num_modes); | |
522 | if (runtime->hw.formats) | |
523 | runtime->hw.formats &= | |
524 | get_formats(codec_dai->caps.mode, codec_dai->caps.num_modes) & | |
525 | get_formats(cpu_dai->caps.mode, cpu_dai->caps.num_modes); | |
526 | else | |
527 | runtime->hw.formats = | |
528 | get_formats(codec_dai->caps.mode, codec_dai->caps.num_modes) & | |
529 | get_formats(cpu_dai->caps.mode, cpu_dai->caps.num_modes); | |
530 | ||
531 | /* Check that the codec and cpu DAI's are compatible */ | |
532 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
533 | runtime->hw.rate_min = | |
534 | max(rtd->codec_dai->playback.rate_min, | |
535 | rtd->cpu_dai->playback.rate_min); | |
536 | runtime->hw.rate_max = | |
537 | min(rtd->codec_dai->playback.rate_max, | |
538 | rtd->cpu_dai->playback.rate_max); | |
539 | runtime->hw.channels_min = | |
540 | max(rtd->codec_dai->playback.channels_min, | |
541 | rtd->cpu_dai->playback.channels_min); | |
542 | runtime->hw.channels_max = | |
543 | min(rtd->codec_dai->playback.channels_max, | |
544 | rtd->cpu_dai->playback.channels_max); | |
545 | } else { | |
546 | runtime->hw.rate_min = | |
547 | max(rtd->codec_dai->capture.rate_min, | |
548 | rtd->cpu_dai->capture.rate_min); | |
549 | runtime->hw.rate_max = | |
550 | min(rtd->codec_dai->capture.rate_max, | |
551 | rtd->cpu_dai->capture.rate_max); | |
552 | runtime->hw.channels_min = | |
553 | max(rtd->codec_dai->capture.channels_min, | |
554 | rtd->cpu_dai->capture.channels_min); | |
555 | runtime->hw.channels_max = | |
556 | min(rtd->codec_dai->capture.channels_max, | |
557 | rtd->cpu_dai->capture.channels_max); | |
558 | } | |
559 | ||
560 | snd_pcm_limit_hw_rates(runtime); | |
561 | if (!runtime->hw.rates) { | |
562 | printk(KERN_ERR "asoc: %s <-> %s No matching rates\n", | |
563 | rtd->codec_dai->name, rtd->cpu_dai->name); | |
564 | goto codec_dai_err; | |
565 | } | |
566 | if (!runtime->hw.formats) { | |
567 | printk(KERN_ERR "asoc: %s <-> %s No matching formats\n", | |
568 | rtd->codec_dai->name, rtd->cpu_dai->name); | |
569 | goto codec_dai_err; | |
570 | } | |
571 | if (!runtime->hw.channels_min || !runtime->hw.channels_max) { | |
572 | printk(KERN_ERR "asoc: %s <-> %s No matching channels\n", | |
573 | rtd->codec_dai->name, rtd->cpu_dai->name); | |
574 | goto codec_dai_err; | |
575 | } | |
576 | ||
577 | dbg("asoc: %s <-> %s info:\n", rtd->codec_dai->name, rtd->cpu_dai->name); | |
b5c5fd24 LG |
578 | dbg("asoc: rate mask 0x%x\n", runtime->hw.rates); |
579 | dbg("asoc: min ch %d max ch %d\n", runtime->hw.channels_min, | |
580 | runtime->hw.channels_max); | |
581 | dbg("asoc: min rate %d max rate %d\n", runtime->hw.rate_min, | |
582 | runtime->hw.rate_max); | |
db2a4165 FM |
583 | |
584 | ||
585 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
586 | rtd->cpu_dai->playback.active = rtd->codec_dai->playback.active = 1; | |
587 | else | |
588 | rtd->cpu_dai->capture.active = rtd->codec_dai->capture.active = 1; | |
589 | rtd->cpu_dai->active = rtd->codec_dai->active = 1; | |
590 | rtd->cpu_dai->runtime = runtime; | |
591 | socdev->codec->active++; | |
592 | mutex_unlock(&pcm_mutex); | |
593 | return 0; | |
594 | ||
595 | codec_dai_err: | |
596 | if (machine->ops && machine->ops->shutdown) | |
597 | machine->ops->shutdown(substream); | |
598 | ||
599 | machine_err: | |
600 | if (platform->pcm_ops->close) | |
601 | platform->pcm_ops->close(substream); | |
602 | ||
603 | platform_err: | |
604 | if (rtd->cpu_dai->ops.shutdown) | |
605 | rtd->cpu_dai->ops.shutdown(substream); | |
606 | out: | |
607 | mutex_unlock(&pcm_mutex); | |
608 | return ret; | |
609 | } | |
610 | ||
611 | /* | |
612 | * Power down the audio subsytem pmdown_time msecs after close is called. | |
613 | * This is to ensure there are no pops or clicks in between any music tracks | |
614 | * due to DAPM power cycling. | |
615 | */ | |
616 | static void close_delayed_work(void *data) | |
617 | { | |
618 | struct snd_soc_device *socdev = data; | |
619 | struct snd_soc_codec *codec = socdev->codec; | |
620 | struct snd_soc_codec_dai *codec_dai; | |
621 | int i; | |
622 | ||
623 | mutex_lock(&pcm_mutex); | |
624 | for(i = 0; i < codec->num_dai; i++) { | |
625 | codec_dai = &codec->dai[i]; | |
626 | ||
627 | dbg("pop wq checking: %s status: %s waiting: %s\n", | |
628 | codec_dai->playback.stream_name, | |
629 | codec_dai->playback.active ? "active" : "inactive", | |
630 | codec_dai->pop_wait ? "yes" : "no"); | |
631 | ||
632 | /* are we waiting on this codec DAI stream */ | |
633 | if (codec_dai->pop_wait == 1) { | |
634 | ||
635 | codec_dai->pop_wait = 0; | |
636 | snd_soc_dapm_stream_event(codec, codec_dai->playback.stream_name, | |
637 | SND_SOC_DAPM_STREAM_STOP); | |
638 | ||
639 | /* power down the codec power domain if no longer active */ | |
640 | if (codec->active == 0) { | |
641 | dbg("pop wq D3 %s %s\n", codec->name, | |
642 | codec_dai->playback.stream_name); | |
643 | if (codec->dapm_event) | |
644 | codec->dapm_event(codec, SNDRV_CTL_POWER_D3hot); | |
645 | } | |
646 | } | |
647 | } | |
648 | mutex_unlock(&pcm_mutex); | |
649 | } | |
650 | ||
651 | /* | |
652 | * Called by ALSA when a PCM substream is closed. Private data can be | |
653 | * freed here. The cpu DAI, codec DAI, machine and platform are also | |
654 | * shutdown. | |
655 | */ | |
656 | static int soc_codec_close(struct snd_pcm_substream *substream) | |
657 | { | |
658 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
659 | struct snd_soc_device *socdev = rtd->socdev; | |
660 | struct snd_soc_machine *machine = socdev->machine; | |
661 | struct snd_soc_platform *platform = socdev->platform; | |
662 | struct snd_soc_codec *codec = socdev->codec; | |
663 | ||
664 | mutex_lock(&pcm_mutex); | |
665 | ||
666 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
667 | rtd->cpu_dai->playback.active = rtd->codec_dai->playback.active = 0; | |
668 | else | |
669 | rtd->cpu_dai->capture.active = rtd->codec_dai->capture.active = 0; | |
670 | ||
671 | if (rtd->codec_dai->playback.active == 0 && | |
672 | rtd->codec_dai->capture.active == 0) { | |
673 | rtd->cpu_dai->active = rtd->codec_dai->active = 0; | |
674 | } | |
675 | codec->active--; | |
676 | ||
677 | if (rtd->cpu_dai->ops.shutdown) | |
678 | rtd->cpu_dai->ops.shutdown(substream); | |
679 | ||
680 | if (rtd->codec_dai->ops.shutdown) | |
681 | rtd->codec_dai->ops.shutdown(substream); | |
682 | ||
683 | if (machine->ops && machine->ops->shutdown) | |
684 | machine->ops->shutdown(substream); | |
685 | ||
686 | if (platform->pcm_ops->close) | |
687 | platform->pcm_ops->close(substream); | |
688 | rtd->cpu_dai->runtime = NULL; | |
689 | ||
690 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
691 | /* start delayed pop wq here for playback streams */ | |
692 | rtd->codec_dai->pop_wait = 1; | |
693 | queue_delayed_work(soc_workq, &soc_stream_work, | |
694 | msecs_to_jiffies(pmdown_time)); | |
695 | } else { | |
696 | /* capture streams can be powered down now */ | |
697 | snd_soc_dapm_stream_event(codec, rtd->codec_dai->capture.stream_name, | |
698 | SND_SOC_DAPM_STREAM_STOP); | |
699 | ||
700 | if (codec->active == 0 && rtd->codec_dai->pop_wait == 0){ | |
701 | if (codec->dapm_event) | |
702 | codec->dapm_event(codec, SNDRV_CTL_POWER_D3hot); | |
703 | } | |
704 | } | |
705 | ||
706 | mutex_unlock(&pcm_mutex); | |
707 | return 0; | |
708 | } | |
709 | ||
710 | /* | |
711 | * Called by ALSA when the PCM substream is prepared, can set format, sample | |
712 | * rate, etc. This function is non atomic and can be called multiple times, | |
713 | * it can refer to the runtime info. | |
714 | */ | |
715 | static int soc_pcm_prepare(struct snd_pcm_substream *substream) | |
716 | { | |
717 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
718 | struct snd_soc_device *socdev = rtd->socdev; | |
719 | struct snd_soc_platform *platform = socdev->platform; | |
720 | struct snd_soc_codec *codec = socdev->codec; | |
721 | int ret = 0; | |
722 | ||
723 | mutex_lock(&pcm_mutex); | |
724 | if (platform->pcm_ops->prepare) { | |
725 | ret = platform->pcm_ops->prepare(substream); | |
726 | if (ret < 0) | |
727 | goto out; | |
728 | } | |
729 | ||
730 | if (rtd->codec_dai->ops.prepare) { | |
731 | ret = rtd->codec_dai->ops.prepare(substream); | |
732 | if (ret < 0) | |
733 | goto out; | |
734 | } | |
735 | ||
736 | if (rtd->cpu_dai->ops.prepare) | |
737 | ret = rtd->cpu_dai->ops.prepare(substream); | |
738 | ||
739 | /* we only want to start a DAPM playback stream if we are not waiting | |
740 | * on an existing one stopping */ | |
741 | if (rtd->codec_dai->pop_wait) { | |
742 | /* we are waiting for the delayed work to start */ | |
743 | if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) | |
744 | snd_soc_dapm_stream_event(codec, | |
745 | rtd->codec_dai->capture.stream_name, | |
746 | SND_SOC_DAPM_STREAM_START); | |
747 | else { | |
748 | rtd->codec_dai->pop_wait = 0; | |
749 | cancel_delayed_work(&soc_stream_work); | |
750 | if (rtd->codec_dai->digital_mute) | |
751 | rtd->codec_dai->digital_mute(codec, rtd->codec_dai, 0); | |
752 | } | |
753 | } else { | |
754 | /* no delayed work - do we need to power up codec */ | |
755 | if (codec->dapm_state != SNDRV_CTL_POWER_D0) { | |
756 | ||
757 | if (codec->dapm_event) | |
758 | codec->dapm_event(codec, SNDRV_CTL_POWER_D1); | |
759 | ||
760 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
761 | snd_soc_dapm_stream_event(codec, | |
762 | rtd->codec_dai->playback.stream_name, | |
763 | SND_SOC_DAPM_STREAM_START); | |
764 | else | |
765 | snd_soc_dapm_stream_event(codec, | |
766 | rtd->codec_dai->capture.stream_name, | |
767 | SND_SOC_DAPM_STREAM_START); | |
768 | ||
769 | if (codec->dapm_event) | |
770 | codec->dapm_event(codec, SNDRV_CTL_POWER_D0); | |
771 | if (rtd->codec_dai->digital_mute) | |
772 | rtd->codec_dai->digital_mute(codec, rtd->codec_dai, 0); | |
773 | ||
774 | } else { | |
775 | /* codec already powered - power on widgets */ | |
776 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
777 | snd_soc_dapm_stream_event(codec, | |
778 | rtd->codec_dai->playback.stream_name, | |
779 | SND_SOC_DAPM_STREAM_START); | |
780 | else | |
781 | snd_soc_dapm_stream_event(codec, | |
782 | rtd->codec_dai->capture.stream_name, | |
783 | SND_SOC_DAPM_STREAM_START); | |
784 | if (rtd->codec_dai->digital_mute) | |
785 | rtd->codec_dai->digital_mute(codec, rtd->codec_dai, 0); | |
786 | } | |
787 | } | |
788 | ||
789 | out: | |
790 | mutex_unlock(&pcm_mutex); | |
791 | return ret; | |
792 | } | |
793 | ||
794 | /* | |
795 | * Called by ALSA when the hardware params are set by application. This | |
796 | * function can also be called multiple times and can allocate buffers | |
797 | * (using snd_pcm_lib_* ). It's non-atomic. | |
798 | */ | |
799 | static int soc_pcm_hw_params(struct snd_pcm_substream *substream, | |
800 | struct snd_pcm_hw_params *params) | |
801 | { | |
802 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
803 | struct snd_soc_device *socdev = rtd->socdev; | |
804 | struct snd_soc_platform *platform = socdev->platform; | |
805 | struct snd_soc_machine *machine = socdev->machine; | |
806 | int ret = 0; | |
807 | ||
808 | mutex_lock(&pcm_mutex); | |
809 | ||
810 | /* we don't need to match any AC97 params */ | |
811 | if (rtd->cpu_dai->type != SND_SOC_DAI_AC97) { | |
812 | ret = soc_hw_match_params(substream, params); | |
813 | if (ret < 0) | |
814 | goto out; | |
815 | } else { | |
816 | struct snd_soc_clock_info clk_info; | |
817 | clk_info.rate = params_rate(params); | |
818 | ret = soc_get_mclk(rtd, &clk_info); | |
819 | if (ret < 0) | |
820 | goto out; | |
821 | } | |
822 | ||
823 | if (rtd->codec_dai->ops.hw_params) { | |
824 | ret = rtd->codec_dai->ops.hw_params(substream, params); | |
825 | if (ret < 0) { | |
826 | printk(KERN_ERR "asoc: can't set codec %s hw params\n", | |
827 | rtd->codec_dai->name); | |
828 | goto out; | |
829 | } | |
830 | } | |
831 | ||
832 | if (rtd->cpu_dai->ops.hw_params) { | |
833 | ret = rtd->cpu_dai->ops.hw_params(substream, params); | |
834 | if (ret < 0) { | |
835 | printk(KERN_ERR "asoc: can't set interface %s hw params\n", | |
836 | rtd->cpu_dai->name); | |
837 | goto interface_err; | |
838 | } | |
839 | } | |
840 | ||
841 | if (platform->pcm_ops->hw_params) { | |
842 | ret = platform->pcm_ops->hw_params(substream, params); | |
843 | if (ret < 0) { | |
844 | printk(KERN_ERR "asoc: can't set platform %s hw params\n", | |
845 | platform->name); | |
846 | goto platform_err; | |
847 | } | |
848 | } | |
849 | ||
850 | if (machine->ops && machine->ops->hw_params) { | |
851 | ret = machine->ops->hw_params(substream, params); | |
852 | if (ret < 0) { | |
853 | printk(KERN_ERR "asoc: machine hw_params failed\n"); | |
854 | goto machine_err; | |
855 | } | |
856 | } | |
857 | ||
858 | out: | |
859 | mutex_unlock(&pcm_mutex); | |
860 | return ret; | |
861 | ||
862 | machine_err: | |
863 | if (platform->pcm_ops->hw_free) | |
864 | platform->pcm_ops->hw_free(substream); | |
865 | ||
866 | platform_err: | |
867 | if (rtd->cpu_dai->ops.hw_free) | |
868 | rtd->cpu_dai->ops.hw_free(substream); | |
869 | ||
870 | interface_err: | |
871 | if (rtd->codec_dai->ops.hw_free) | |
872 | rtd->codec_dai->ops.hw_free(substream); | |
873 | ||
874 | mutex_unlock(&pcm_mutex); | |
875 | return ret; | |
876 | } | |
877 | ||
878 | /* | |
879 | * Free's resources allocated by hw_params, can be called multiple times | |
880 | */ | |
881 | static int soc_pcm_hw_free(struct snd_pcm_substream *substream) | |
882 | { | |
883 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
884 | struct snd_soc_device *socdev = rtd->socdev; | |
885 | struct snd_soc_platform *platform = socdev->platform; | |
886 | struct snd_soc_codec *codec = socdev->codec; | |
887 | struct snd_soc_machine *machine = socdev->machine; | |
888 | ||
889 | mutex_lock(&pcm_mutex); | |
890 | ||
891 | /* apply codec digital mute */ | |
892 | if (!codec->active && rtd->codec_dai->digital_mute) | |
893 | rtd->codec_dai->digital_mute(codec, rtd->codec_dai, 1); | |
894 | ||
895 | /* free any machine hw params */ | |
896 | if (machine->ops && machine->ops->hw_free) | |
897 | machine->ops->hw_free(substream); | |
898 | ||
899 | /* free any DMA resources */ | |
900 | if (platform->pcm_ops->hw_free) | |
901 | platform->pcm_ops->hw_free(substream); | |
902 | ||
903 | /* now free hw params for the DAI's */ | |
904 | if (rtd->codec_dai->ops.hw_free) | |
905 | rtd->codec_dai->ops.hw_free(substream); | |
906 | ||
907 | if (rtd->cpu_dai->ops.hw_free) | |
908 | rtd->cpu_dai->ops.hw_free(substream); | |
909 | ||
910 | mutex_unlock(&pcm_mutex); | |
911 | return 0; | |
912 | } | |
913 | ||
914 | static int soc_pcm_trigger(struct snd_pcm_substream *substream, int cmd) | |
915 | { | |
916 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
917 | struct snd_soc_device *socdev = rtd->socdev; | |
918 | struct snd_soc_platform *platform = socdev->platform; | |
919 | int ret; | |
920 | ||
921 | if (rtd->codec_dai->ops.trigger) { | |
922 | ret = rtd->codec_dai->ops.trigger(substream, cmd); | |
923 | if (ret < 0) | |
924 | return ret; | |
925 | } | |
926 | ||
927 | if (platform->pcm_ops->trigger) { | |
928 | ret = platform->pcm_ops->trigger(substream, cmd); | |
929 | if (ret < 0) | |
930 | return ret; | |
931 | } | |
932 | ||
933 | if (rtd->cpu_dai->ops.trigger) { | |
934 | ret = rtd->cpu_dai->ops.trigger(substream, cmd); | |
935 | if (ret < 0) | |
936 | return ret; | |
937 | } | |
938 | return 0; | |
939 | } | |
940 | ||
941 | /* ASoC PCM operations */ | |
942 | static struct snd_pcm_ops soc_pcm_ops = { | |
943 | .open = soc_pcm_open, | |
944 | .close = soc_codec_close, | |
945 | .hw_params = soc_pcm_hw_params, | |
946 | .hw_free = soc_pcm_hw_free, | |
947 | .prepare = soc_pcm_prepare, | |
948 | .trigger = soc_pcm_trigger, | |
949 | }; | |
950 | ||
951 | #ifdef CONFIG_PM | |
952 | /* powers down audio subsystem for suspend */ | |
953 | static int soc_suspend(struct platform_device *pdev, pm_message_t state) | |
954 | { | |
955 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
956 | struct snd_soc_machine *machine = socdev->machine; | |
957 | struct snd_soc_platform *platform = socdev->platform; | |
958 | struct snd_soc_codec_device *codec_dev = socdev->codec_dev; | |
959 | struct snd_soc_codec *codec = socdev->codec; | |
960 | int i; | |
961 | ||
962 | /* mute any active DAC's */ | |
963 | for(i = 0; i < machine->num_links; i++) { | |
964 | struct snd_soc_codec_dai *dai = machine->dai_link[i].codec_dai; | |
965 | if (dai->digital_mute && dai->playback.active) | |
966 | dai->digital_mute(codec, dai, 1); | |
967 | } | |
968 | ||
969 | if (machine->suspend_pre) | |
970 | machine->suspend_pre(pdev, state); | |
971 | ||
972 | for(i = 0; i < machine->num_links; i++) { | |
973 | struct snd_soc_cpu_dai *cpu_dai = machine->dai_link[i].cpu_dai; | |
974 | if (cpu_dai->suspend && cpu_dai->type != SND_SOC_DAI_AC97) | |
975 | cpu_dai->suspend(pdev, cpu_dai); | |
976 | if (platform->suspend) | |
977 | platform->suspend(pdev, cpu_dai); | |
978 | } | |
979 | ||
980 | /* close any waiting streams and save state */ | |
981 | flush_workqueue(soc_workq); | |
982 | codec->suspend_dapm_state = codec->dapm_state; | |
983 | ||
984 | for(i = 0; i < codec->num_dai; i++) { | |
985 | char *stream = codec->dai[i].playback.stream_name; | |
986 | if (stream != NULL) | |
987 | snd_soc_dapm_stream_event(codec, stream, | |
988 | SND_SOC_DAPM_STREAM_SUSPEND); | |
989 | stream = codec->dai[i].capture.stream_name; | |
990 | if (stream != NULL) | |
991 | snd_soc_dapm_stream_event(codec, stream, | |
992 | SND_SOC_DAPM_STREAM_SUSPEND); | |
993 | } | |
994 | ||
995 | if (codec_dev->suspend) | |
996 | codec_dev->suspend(pdev, state); | |
997 | ||
998 | for(i = 0; i < machine->num_links; i++) { | |
999 | struct snd_soc_cpu_dai *cpu_dai = machine->dai_link[i].cpu_dai; | |
1000 | if (cpu_dai->suspend && cpu_dai->type == SND_SOC_DAI_AC97) | |
1001 | cpu_dai->suspend(pdev, cpu_dai); | |
1002 | } | |
1003 | ||
1004 | if (machine->suspend_post) | |
1005 | machine->suspend_post(pdev, state); | |
1006 | ||
1007 | return 0; | |
1008 | } | |
1009 | ||
1010 | /* powers up audio subsystem after a suspend */ | |
1011 | static int soc_resume(struct platform_device *pdev) | |
1012 | { | |
1013 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
1014 | struct snd_soc_machine *machine = socdev->machine; | |
1015 | struct snd_soc_platform *platform = socdev->platform; | |
1016 | struct snd_soc_codec_device *codec_dev = socdev->codec_dev; | |
1017 | struct snd_soc_codec *codec = socdev->codec; | |
1018 | int i; | |
1019 | ||
1020 | if (machine->resume_pre) | |
1021 | machine->resume_pre(pdev); | |
1022 | ||
1023 | for(i = 0; i < machine->num_links; i++) { | |
1024 | struct snd_soc_cpu_dai *cpu_dai = machine->dai_link[i].cpu_dai; | |
1025 | if (cpu_dai->resume && cpu_dai->type == SND_SOC_DAI_AC97) | |
1026 | cpu_dai->resume(pdev, cpu_dai); | |
1027 | } | |
1028 | ||
1029 | if (codec_dev->resume) | |
1030 | codec_dev->resume(pdev); | |
1031 | ||
1032 | for(i = 0; i < codec->num_dai; i++) { | |
1033 | char* stream = codec->dai[i].playback.stream_name; | |
1034 | if (stream != NULL) | |
1035 | snd_soc_dapm_stream_event(codec, stream, | |
1036 | SND_SOC_DAPM_STREAM_RESUME); | |
1037 | stream = codec->dai[i].capture.stream_name; | |
1038 | if (stream != NULL) | |
1039 | snd_soc_dapm_stream_event(codec, stream, | |
1040 | SND_SOC_DAPM_STREAM_RESUME); | |
1041 | } | |
1042 | ||
1043 | /* unmute any active DAC's */ | |
1044 | for(i = 0; i < machine->num_links; i++) { | |
1045 | struct snd_soc_codec_dai *dai = machine->dai_link[i].codec_dai; | |
1046 | if (dai->digital_mute && dai->playback.active) | |
1047 | dai->digital_mute(codec, dai, 0); | |
1048 | } | |
1049 | ||
1050 | for(i = 0; i < machine->num_links; i++) { | |
1051 | struct snd_soc_cpu_dai *cpu_dai = machine->dai_link[i].cpu_dai; | |
1052 | if (cpu_dai->resume && cpu_dai->type != SND_SOC_DAI_AC97) | |
1053 | cpu_dai->resume(pdev, cpu_dai); | |
1054 | if (platform->resume) | |
1055 | platform->resume(pdev, cpu_dai); | |
1056 | } | |
1057 | ||
1058 | if (machine->resume_post) | |
1059 | machine->resume_post(pdev); | |
1060 | ||
1061 | return 0; | |
1062 | } | |
1063 | ||
1064 | #else | |
1065 | #define soc_suspend NULL | |
1066 | #define soc_resume NULL | |
1067 | #endif | |
1068 | ||
1069 | /* probes a new socdev */ | |
1070 | static int soc_probe(struct platform_device *pdev) | |
1071 | { | |
1072 | int ret = 0, i; | |
1073 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
1074 | struct snd_soc_machine *machine = socdev->machine; | |
1075 | struct snd_soc_platform *platform = socdev->platform; | |
1076 | struct snd_soc_codec_device *codec_dev = socdev->codec_dev; | |
1077 | ||
1078 | if (machine->probe) { | |
1079 | ret = machine->probe(pdev); | |
1080 | if(ret < 0) | |
1081 | return ret; | |
1082 | } | |
1083 | ||
1084 | for (i = 0; i < machine->num_links; i++) { | |
1085 | struct snd_soc_cpu_dai *cpu_dai = machine->dai_link[i].cpu_dai; | |
1086 | if (cpu_dai->probe) { | |
1087 | ret = cpu_dai->probe(pdev); | |
1088 | if(ret < 0) | |
1089 | goto cpu_dai_err; | |
1090 | } | |
1091 | } | |
1092 | ||
1093 | if (codec_dev->probe) { | |
1094 | ret = codec_dev->probe(pdev); | |
1095 | if(ret < 0) | |
1096 | goto cpu_dai_err; | |
1097 | } | |
1098 | ||
1099 | if (platform->probe) { | |
1100 | ret = platform->probe(pdev); | |
1101 | if(ret < 0) | |
1102 | goto platform_err; | |
1103 | } | |
1104 | ||
1105 | /* DAPM stream work */ | |
1106 | soc_workq = create_workqueue("kdapm"); | |
1107 | if (soc_workq == NULL) | |
1108 | goto work_err; | |
1109 | INIT_WORK(&soc_stream_work, close_delayed_work, socdev); | |
1110 | return 0; | |
1111 | ||
1112 | work_err: | |
1113 | if (platform->remove) | |
1114 | platform->remove(pdev); | |
1115 | ||
1116 | platform_err: | |
1117 | if (codec_dev->remove) | |
1118 | codec_dev->remove(pdev); | |
1119 | ||
1120 | cpu_dai_err: | |
1121 | for (i--; i > 0; i--) { | |
1122 | struct snd_soc_cpu_dai *cpu_dai = machine->dai_link[i].cpu_dai; | |
1123 | if (cpu_dai->remove) | |
1124 | cpu_dai->remove(pdev); | |
1125 | } | |
1126 | ||
1127 | if (machine->remove) | |
1128 | machine->remove(pdev); | |
1129 | ||
1130 | return ret; | |
1131 | } | |
1132 | ||
1133 | /* removes a socdev */ | |
1134 | static int soc_remove(struct platform_device *pdev) | |
1135 | { | |
1136 | int i; | |
1137 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
1138 | struct snd_soc_machine *machine = socdev->machine; | |
1139 | struct snd_soc_platform *platform = socdev->platform; | |
1140 | struct snd_soc_codec_device *codec_dev = socdev->codec_dev; | |
1141 | ||
1142 | if (soc_workq) | |
1143 | destroy_workqueue(soc_workq); | |
1144 | ||
1145 | if (platform->remove) | |
1146 | platform->remove(pdev); | |
1147 | ||
1148 | if (codec_dev->remove) | |
1149 | codec_dev->remove(pdev); | |
1150 | ||
1151 | for (i = 0; i < machine->num_links; i++) { | |
1152 | struct snd_soc_cpu_dai *cpu_dai = machine->dai_link[i].cpu_dai; | |
1153 | if (cpu_dai->remove) | |
1154 | cpu_dai->remove(pdev); | |
1155 | } | |
1156 | ||
1157 | if (machine->remove) | |
1158 | machine->remove(pdev); | |
1159 | ||
1160 | return 0; | |
1161 | } | |
1162 | ||
1163 | /* ASoC platform driver */ | |
1164 | static struct platform_driver soc_driver = { | |
1165 | .driver = { | |
1166 | .name = "soc-audio", | |
1167 | }, | |
1168 | .probe = soc_probe, | |
1169 | .remove = soc_remove, | |
1170 | .suspend = soc_suspend, | |
1171 | .resume = soc_resume, | |
1172 | }; | |
1173 | ||
1174 | /* create a new pcm */ | |
1175 | static int soc_new_pcm(struct snd_soc_device *socdev, | |
1176 | struct snd_soc_dai_link *dai_link, int num) | |
1177 | { | |
1178 | struct snd_soc_codec *codec = socdev->codec; | |
1179 | struct snd_soc_codec_dai *codec_dai = dai_link->codec_dai; | |
1180 | struct snd_soc_cpu_dai *cpu_dai = dai_link->cpu_dai; | |
1181 | struct snd_soc_pcm_runtime *rtd; | |
1182 | struct snd_pcm *pcm; | |
1183 | char new_name[64]; | |
1184 | int ret = 0, playback = 0, capture = 0; | |
1185 | ||
1186 | rtd = kzalloc(sizeof(struct snd_soc_pcm_runtime), GFP_KERNEL); | |
1187 | if (rtd == NULL) | |
1188 | return -ENOMEM; | |
1189 | rtd->cpu_dai = cpu_dai; | |
1190 | rtd->codec_dai = codec_dai; | |
1191 | rtd->socdev = socdev; | |
1192 | ||
1193 | /* check client and interface hw capabilities */ | |
1194 | sprintf(new_name, "%s %s-%s-%d",dai_link->stream_name, codec_dai->name, | |
1195 | get_dai_name(cpu_dai->type), num); | |
1196 | ||
1197 | if (codec_dai->playback.channels_min) | |
1198 | playback = 1; | |
1199 | if (codec_dai->capture.channels_min) | |
1200 | capture = 1; | |
1201 | ||
1202 | ret = snd_pcm_new(codec->card, new_name, codec->pcm_devs++, playback, | |
1203 | capture, &pcm); | |
1204 | if (ret < 0) { | |
1205 | printk(KERN_ERR "asoc: can't create pcm for codec %s\n", codec->name); | |
1206 | kfree(rtd); | |
1207 | return ret; | |
1208 | } | |
1209 | ||
1210 | pcm->private_data = rtd; | |
1211 | soc_pcm_ops.mmap = socdev->platform->pcm_ops->mmap; | |
1212 | soc_pcm_ops.pointer = socdev->platform->pcm_ops->pointer; | |
1213 | soc_pcm_ops.ioctl = socdev->platform->pcm_ops->ioctl; | |
1214 | soc_pcm_ops.copy = socdev->platform->pcm_ops->copy; | |
1215 | soc_pcm_ops.silence = socdev->platform->pcm_ops->silence; | |
1216 | soc_pcm_ops.ack = socdev->platform->pcm_ops->ack; | |
1217 | soc_pcm_ops.page = socdev->platform->pcm_ops->page; | |
1218 | ||
1219 | if (playback) | |
1220 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &soc_pcm_ops); | |
1221 | ||
1222 | if (capture) | |
1223 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &soc_pcm_ops); | |
1224 | ||
1225 | ret = socdev->platform->pcm_new(codec->card, codec_dai, pcm); | |
1226 | if (ret < 0) { | |
1227 | printk(KERN_ERR "asoc: platform pcm constructor failed\n"); | |
1228 | kfree(rtd); | |
1229 | return ret; | |
1230 | } | |
1231 | ||
1232 | pcm->private_free = socdev->platform->pcm_free; | |
1233 | printk(KERN_INFO "asoc: %s <-> %s mapping ok\n", codec_dai->name, | |
1234 | cpu_dai->name); | |
1235 | return ret; | |
1236 | } | |
1237 | ||
1238 | /* codec register dump */ | |
1239 | static ssize_t codec_reg_show(struct device *dev, | |
1240 | struct device_attribute *attr, char *buf) | |
1241 | { | |
1242 | struct snd_soc_device *devdata = dev_get_drvdata(dev); | |
1243 | struct snd_soc_codec *codec = devdata->codec; | |
1244 | int i, step = 1, count = 0; | |
1245 | ||
1246 | if (!codec->reg_cache_size) | |
1247 | return 0; | |
1248 | ||
1249 | if (codec->reg_cache_step) | |
1250 | step = codec->reg_cache_step; | |
1251 | ||
1252 | count += sprintf(buf, "%s registers\n", codec->name); | |
1253 | for(i = 0; i < codec->reg_cache_size; i += step) | |
1254 | count += sprintf(buf + count, "%2x: %4x\n", i, codec->read(codec, i)); | |
1255 | ||
1256 | return count; | |
1257 | } | |
1258 | static DEVICE_ATTR(codec_reg, 0444, codec_reg_show, NULL); | |
1259 | ||
1260 | /** | |
1261 | * snd_soc_new_ac97_codec - initailise AC97 device | |
1262 | * @codec: audio codec | |
1263 | * @ops: AC97 bus operations | |
1264 | * @num: AC97 codec number | |
1265 | * | |
1266 | * Initialises AC97 codec resources for use by ad-hoc devices only. | |
1267 | */ | |
1268 | int snd_soc_new_ac97_codec(struct snd_soc_codec *codec, | |
1269 | struct snd_ac97_bus_ops *ops, int num) | |
1270 | { | |
1271 | mutex_lock(&codec->mutex); | |
1272 | ||
1273 | codec->ac97 = kzalloc(sizeof(struct snd_ac97), GFP_KERNEL); | |
1274 | if (codec->ac97 == NULL) { | |
1275 | mutex_unlock(&codec->mutex); | |
1276 | return -ENOMEM; | |
1277 | } | |
1278 | ||
1279 | codec->ac97->bus = kzalloc(sizeof(struct snd_ac97_bus), GFP_KERNEL); | |
1280 | if (codec->ac97->bus == NULL) { | |
1281 | kfree(codec->ac97); | |
1282 | codec->ac97 = NULL; | |
1283 | mutex_unlock(&codec->mutex); | |
1284 | return -ENOMEM; | |
1285 | } | |
1286 | ||
1287 | codec->ac97->bus->ops = ops; | |
1288 | codec->ac97->num = num; | |
1289 | mutex_unlock(&codec->mutex); | |
1290 | return 0; | |
1291 | } | |
1292 | EXPORT_SYMBOL_GPL(snd_soc_new_ac97_codec); | |
1293 | ||
1294 | /** | |
1295 | * snd_soc_free_ac97_codec - free AC97 codec device | |
1296 | * @codec: audio codec | |
1297 | * | |
1298 | * Frees AC97 codec device resources. | |
1299 | */ | |
1300 | void snd_soc_free_ac97_codec(struct snd_soc_codec *codec) | |
1301 | { | |
1302 | mutex_lock(&codec->mutex); | |
1303 | kfree(codec->ac97->bus); | |
1304 | kfree(codec->ac97); | |
1305 | codec->ac97 = NULL; | |
1306 | mutex_unlock(&codec->mutex); | |
1307 | } | |
1308 | EXPORT_SYMBOL_GPL(snd_soc_free_ac97_codec); | |
1309 | ||
1310 | /** | |
1311 | * snd_soc_update_bits - update codec register bits | |
1312 | * @codec: audio codec | |
1313 | * @reg: codec register | |
1314 | * @mask: register mask | |
1315 | * @value: new value | |
1316 | * | |
1317 | * Writes new register value. | |
1318 | * | |
1319 | * Returns 1 for change else 0. | |
1320 | */ | |
1321 | int snd_soc_update_bits(struct snd_soc_codec *codec, unsigned short reg, | |
1322 | unsigned short mask, unsigned short value) | |
1323 | { | |
1324 | int change; | |
1325 | unsigned short old, new; | |
1326 | ||
1327 | mutex_lock(&io_mutex); | |
1328 | old = snd_soc_read(codec, reg); | |
1329 | new = (old & ~mask) | value; | |
1330 | change = old != new; | |
1331 | if (change) | |
1332 | snd_soc_write(codec, reg, new); | |
1333 | ||
1334 | mutex_unlock(&io_mutex); | |
1335 | return change; | |
1336 | } | |
1337 | EXPORT_SYMBOL_GPL(snd_soc_update_bits); | |
1338 | ||
1339 | /** | |
1340 | * snd_soc_test_bits - test register for change | |
1341 | * @codec: audio codec | |
1342 | * @reg: codec register | |
1343 | * @mask: register mask | |
1344 | * @value: new value | |
1345 | * | |
1346 | * Tests a register with a new value and checks if the new value is | |
1347 | * different from the old value. | |
1348 | * | |
1349 | * Returns 1 for change else 0. | |
1350 | */ | |
1351 | int snd_soc_test_bits(struct snd_soc_codec *codec, unsigned short reg, | |
1352 | unsigned short mask, unsigned short value) | |
1353 | { | |
1354 | int change; | |
1355 | unsigned short old, new; | |
1356 | ||
1357 | mutex_lock(&io_mutex); | |
1358 | old = snd_soc_read(codec, reg); | |
1359 | new = (old & ~mask) | value; | |
1360 | change = old != new; | |
1361 | mutex_unlock(&io_mutex); | |
1362 | ||
1363 | return change; | |
1364 | } | |
1365 | EXPORT_SYMBOL_GPL(snd_soc_test_bits); | |
1366 | ||
1367 | /** | |
1368 | * snd_soc_get_rate - get int sample rate | |
1369 | * @hwpcmrate: the hardware pcm rate | |
1370 | * | |
1371 | * Returns the audio rate integaer value, else 0. | |
1372 | */ | |
1373 | int snd_soc_get_rate(int hwpcmrate) | |
1374 | { | |
1375 | int rate = ffs(hwpcmrate) - 1; | |
1376 | ||
1377 | if (rate > ARRAY_SIZE(rates)) | |
1378 | return 0; | |
1379 | return rates[rate]; | |
1380 | } | |
1381 | EXPORT_SYMBOL_GPL(snd_soc_get_rate); | |
1382 | ||
1383 | /** | |
1384 | * snd_soc_new_pcms - create new sound card and pcms | |
1385 | * @socdev: the SoC audio device | |
1386 | * | |
1387 | * Create a new sound card based upon the codec and interface pcms. | |
1388 | * | |
1389 | * Returns 0 for success, else error. | |
1390 | */ | |
1391 | int snd_soc_new_pcms(struct snd_soc_device *socdev, int idx, const char * xid) | |
1392 | { | |
1393 | struct snd_soc_codec *codec = socdev->codec; | |
1394 | struct snd_soc_machine *machine = socdev->machine; | |
1395 | int ret = 0, i; | |
1396 | ||
1397 | mutex_lock(&codec->mutex); | |
1398 | ||
1399 | /* register a sound card */ | |
1400 | codec->card = snd_card_new(idx, xid, codec->owner, 0); | |
1401 | if (!codec->card) { | |
1402 | printk(KERN_ERR "asoc: can't create sound card for codec %s\n", | |
1403 | codec->name); | |
1404 | mutex_unlock(&codec->mutex); | |
1405 | return -ENODEV; | |
1406 | } | |
1407 | ||
1408 | codec->card->dev = socdev->dev; | |
1409 | codec->card->private_data = codec; | |
1410 | strncpy(codec->card->driver, codec->name, sizeof(codec->card->driver)); | |
1411 | ||
1412 | /* create the pcms */ | |
1413 | for(i = 0; i < machine->num_links; i++) { | |
1414 | ret = soc_new_pcm(socdev, &machine->dai_link[i], i); | |
1415 | if (ret < 0) { | |
1416 | printk(KERN_ERR "asoc: can't create pcm %s\n", | |
1417 | machine->dai_link[i].stream_name); | |
1418 | mutex_unlock(&codec->mutex); | |
1419 | return ret; | |
1420 | } | |
1421 | } | |
1422 | ||
1423 | mutex_unlock(&codec->mutex); | |
1424 | return ret; | |
1425 | } | |
1426 | EXPORT_SYMBOL_GPL(snd_soc_new_pcms); | |
1427 | ||
1428 | /** | |
1429 | * snd_soc_register_card - register sound card | |
1430 | * @socdev: the SoC audio device | |
1431 | * | |
1432 | * Register a SoC sound card. Also registers an AC97 device if the | |
1433 | * codec is AC97 for ad hoc devices. | |
1434 | * | |
1435 | * Returns 0 for success, else error. | |
1436 | */ | |
1437 | int snd_soc_register_card(struct snd_soc_device *socdev) | |
1438 | { | |
1439 | struct snd_soc_codec *codec = socdev->codec; | |
1440 | struct snd_soc_machine *machine = socdev->machine; | |
12e74f7d | 1441 | int ret = 0, i, ac97 = 0, err = 0; |
db2a4165 FM |
1442 | |
1443 | mutex_lock(&codec->mutex); | |
1444 | for(i = 0; i < machine->num_links; i++) { | |
12e74f7d LG |
1445 | if (socdev->machine->dai_link[i].init) { |
1446 | err = socdev->machine->dai_link[i].init(codec); | |
1447 | if (err < 0) { | |
1448 | printk(KERN_ERR "asoc: failed to init %s\n", | |
1449 | socdev->machine->dai_link[i].stream_name); | |
1450 | continue; | |
1451 | } | |
1452 | } | |
db2a4165 FM |
1453 | if (socdev->machine->dai_link[i].cpu_dai->type == SND_SOC_DAI_AC97) |
1454 | ac97 = 1; | |
1455 | } | |
1456 | snprintf(codec->card->shortname, sizeof(codec->card->shortname), | |
1457 | "%s", machine->name); | |
1458 | snprintf(codec->card->longname, sizeof(codec->card->longname), | |
1459 | "%s (%s)", machine->name, codec->name); | |
1460 | ||
1461 | ret = snd_card_register(codec->card); | |
1462 | if (ret < 0) { | |
1463 | printk(KERN_ERR "asoc: failed to register soundcard for codec %s\n", | |
1464 | codec->name); | |
12e74f7d | 1465 | goto out; |
db2a4165 FM |
1466 | } |
1467 | ||
1468 | #ifdef CONFIG_SND_SOC_AC97_BUS | |
12e74f7d LG |
1469 | if (ac97) { |
1470 | ret = soc_ac97_dev_register(codec); | |
1471 | if (ret < 0) { | |
1472 | printk(KERN_ERR "asoc: AC97 device register failed\n"); | |
1473 | snd_card_free(codec->card); | |
1474 | goto out; | |
1475 | } | |
1476 | } | |
db2a4165 FM |
1477 | #endif |
1478 | ||
12e74f7d LG |
1479 | err = snd_soc_dapm_sys_add(socdev->dev); |
1480 | if (err < 0) | |
1481 | printk(KERN_WARNING "asoc: failed to add dapm sysfs entries\n"); | |
1482 | ||
1483 | err = device_create_file(socdev->dev, &dev_attr_codec_reg); | |
1484 | if (err < 0) | |
1485 | printk(KERN_WARNING "asoc: failed to add codec sysfs entries\n"); | |
1486 | out: | |
db2a4165 FM |
1487 | mutex_unlock(&codec->mutex); |
1488 | return ret; | |
1489 | } | |
1490 | EXPORT_SYMBOL_GPL(snd_soc_register_card); | |
1491 | ||
1492 | /** | |
1493 | * snd_soc_free_pcms - free sound card and pcms | |
1494 | * @socdev: the SoC audio device | |
1495 | * | |
1496 | * Frees sound card and pcms associated with the socdev. | |
1497 | * Also unregister the codec if it is an AC97 device. | |
1498 | */ | |
1499 | void snd_soc_free_pcms(struct snd_soc_device *socdev) | |
1500 | { | |
1501 | struct snd_soc_codec *codec = socdev->codec; | |
1502 | ||
1503 | mutex_lock(&codec->mutex); | |
1504 | #ifdef CONFIG_SND_SOC_AC97_BUS | |
1505 | if (codec->ac97) | |
1506 | soc_ac97_dev_unregister(codec); | |
1507 | #endif | |
1508 | ||
1509 | if (codec->card) | |
1510 | snd_card_free(codec->card); | |
1511 | device_remove_file(socdev->dev, &dev_attr_codec_reg); | |
1512 | mutex_unlock(&codec->mutex); | |
1513 | } | |
1514 | EXPORT_SYMBOL_GPL(snd_soc_free_pcms); | |
1515 | ||
1516 | /** | |
1517 | * snd_soc_set_runtime_hwparams - set the runtime hardware parameters | |
1518 | * @substream: the pcm substream | |
1519 | * @hw: the hardware parameters | |
1520 | * | |
1521 | * Sets the substream runtime hardware parameters. | |
1522 | */ | |
1523 | int snd_soc_set_runtime_hwparams(struct snd_pcm_substream *substream, | |
1524 | const struct snd_pcm_hardware *hw) | |
1525 | { | |
1526 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1527 | runtime->hw.info = hw->info; | |
1528 | runtime->hw.formats = hw->formats; | |
1529 | runtime->hw.period_bytes_min = hw->period_bytes_min; | |
1530 | runtime->hw.period_bytes_max = hw->period_bytes_max; | |
1531 | runtime->hw.periods_min = hw->periods_min; | |
1532 | runtime->hw.periods_max = hw->periods_max; | |
1533 | runtime->hw.buffer_bytes_max = hw->buffer_bytes_max; | |
1534 | runtime->hw.fifo_size = hw->fifo_size; | |
1535 | return 0; | |
1536 | } | |
1537 | EXPORT_SYMBOL_GPL(snd_soc_set_runtime_hwparams); | |
1538 | ||
1539 | /** | |
1540 | * snd_soc_cnew - create new control | |
1541 | * @_template: control template | |
1542 | * @data: control private data | |
1543 | * @lnng_name: control long name | |
1544 | * | |
1545 | * Create a new mixer control from a template control. | |
1546 | * | |
1547 | * Returns 0 for success, else error. | |
1548 | */ | |
1549 | struct snd_kcontrol *snd_soc_cnew(const struct snd_kcontrol_new *_template, | |
1550 | void *data, char *long_name) | |
1551 | { | |
1552 | struct snd_kcontrol_new template; | |
1553 | ||
1554 | memcpy(&template, _template, sizeof(template)); | |
1555 | if (long_name) | |
1556 | template.name = long_name; | |
1557 | template.access = SNDRV_CTL_ELEM_ACCESS_READWRITE; | |
1558 | template.index = 0; | |
1559 | ||
1560 | return snd_ctl_new1(&template, data); | |
1561 | } | |
1562 | EXPORT_SYMBOL_GPL(snd_soc_cnew); | |
1563 | ||
1564 | /** | |
1565 | * snd_soc_info_enum_double - enumerated double mixer info callback | |
1566 | * @kcontrol: mixer control | |
1567 | * @uinfo: control element information | |
1568 | * | |
1569 | * Callback to provide information about a double enumerated | |
1570 | * mixer control. | |
1571 | * | |
1572 | * Returns 0 for success. | |
1573 | */ | |
1574 | int snd_soc_info_enum_double(struct snd_kcontrol *kcontrol, | |
1575 | struct snd_ctl_elem_info *uinfo) | |
1576 | { | |
1577 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
1578 | ||
1579 | uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED; | |
1580 | uinfo->count = e->shift_l == e->shift_r ? 1 : 2; | |
1581 | uinfo->value.enumerated.items = e->mask; | |
1582 | ||
1583 | if (uinfo->value.enumerated.item > e->mask - 1) | |
1584 | uinfo->value.enumerated.item = e->mask - 1; | |
1585 | strcpy(uinfo->value.enumerated.name, | |
1586 | e->texts[uinfo->value.enumerated.item]); | |
1587 | return 0; | |
1588 | } | |
1589 | EXPORT_SYMBOL_GPL(snd_soc_info_enum_double); | |
1590 | ||
1591 | /** | |
1592 | * snd_soc_get_enum_double - enumerated double mixer get callback | |
1593 | * @kcontrol: mixer control | |
1594 | * @uinfo: control element information | |
1595 | * | |
1596 | * Callback to get the value of a double enumerated mixer. | |
1597 | * | |
1598 | * Returns 0 for success. | |
1599 | */ | |
1600 | int snd_soc_get_enum_double(struct snd_kcontrol *kcontrol, | |
1601 | struct snd_ctl_elem_value *ucontrol) | |
1602 | { | |
1603 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
1604 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
1605 | unsigned short val, bitmask; | |
1606 | ||
1607 | for (bitmask = 1; bitmask < e->mask; bitmask <<= 1) | |
1608 | ; | |
1609 | val = snd_soc_read(codec, e->reg); | |
1610 | ucontrol->value.enumerated.item[0] = (val >> e->shift_l) & (bitmask - 1); | |
1611 | if (e->shift_l != e->shift_r) | |
1612 | ucontrol->value.enumerated.item[1] = | |
1613 | (val >> e->shift_r) & (bitmask - 1); | |
1614 | ||
1615 | return 0; | |
1616 | } | |
1617 | EXPORT_SYMBOL_GPL(snd_soc_get_enum_double); | |
1618 | ||
1619 | /** | |
1620 | * snd_soc_put_enum_double - enumerated double mixer put callback | |
1621 | * @kcontrol: mixer control | |
1622 | * @uinfo: control element information | |
1623 | * | |
1624 | * Callback to set the value of a double enumerated mixer. | |
1625 | * | |
1626 | * Returns 0 for success. | |
1627 | */ | |
1628 | int snd_soc_put_enum_double(struct snd_kcontrol *kcontrol, | |
1629 | struct snd_ctl_elem_value *ucontrol) | |
1630 | { | |
1631 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
1632 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
1633 | unsigned short val; | |
1634 | unsigned short mask, bitmask; | |
1635 | ||
1636 | for (bitmask = 1; bitmask < e->mask; bitmask <<= 1) | |
1637 | ; | |
1638 | if (ucontrol->value.enumerated.item[0] > e->mask - 1) | |
1639 | return -EINVAL; | |
1640 | val = ucontrol->value.enumerated.item[0] << e->shift_l; | |
1641 | mask = (bitmask - 1) << e->shift_l; | |
1642 | if (e->shift_l != e->shift_r) { | |
1643 | if (ucontrol->value.enumerated.item[1] > e->mask - 1) | |
1644 | return -EINVAL; | |
1645 | val |= ucontrol->value.enumerated.item[1] << e->shift_r; | |
1646 | mask |= (bitmask - 1) << e->shift_r; | |
1647 | } | |
1648 | ||
1649 | return snd_soc_update_bits(codec, e->reg, mask, val); | |
1650 | } | |
1651 | EXPORT_SYMBOL_GPL(snd_soc_put_enum_double); | |
1652 | ||
1653 | /** | |
1654 | * snd_soc_info_enum_ext - external enumerated single mixer info callback | |
1655 | * @kcontrol: mixer control | |
1656 | * @uinfo: control element information | |
1657 | * | |
1658 | * Callback to provide information about an external enumerated | |
1659 | * single mixer. | |
1660 | * | |
1661 | * Returns 0 for success. | |
1662 | */ | |
1663 | int snd_soc_info_enum_ext(struct snd_kcontrol *kcontrol, | |
1664 | struct snd_ctl_elem_info *uinfo) | |
1665 | { | |
1666 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
1667 | ||
1668 | uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED; | |
1669 | uinfo->count = 1; | |
1670 | uinfo->value.enumerated.items = e->mask; | |
1671 | ||
1672 | if (uinfo->value.enumerated.item > e->mask - 1) | |
1673 | uinfo->value.enumerated.item = e->mask - 1; | |
1674 | strcpy(uinfo->value.enumerated.name, | |
1675 | e->texts[uinfo->value.enumerated.item]); | |
1676 | return 0; | |
1677 | } | |
1678 | EXPORT_SYMBOL_GPL(snd_soc_info_enum_ext); | |
1679 | ||
1680 | /** | |
1681 | * snd_soc_info_volsw_ext - external single mixer info callback | |
1682 | * @kcontrol: mixer control | |
1683 | * @uinfo: control element information | |
1684 | * | |
1685 | * Callback to provide information about a single external mixer control. | |
1686 | * | |
1687 | * Returns 0 for success. | |
1688 | */ | |
1689 | int snd_soc_info_volsw_ext(struct snd_kcontrol *kcontrol, | |
1690 | struct snd_ctl_elem_info *uinfo) | |
1691 | { | |
1692 | int mask = kcontrol->private_value; | |
1693 | ||
1694 | uinfo->type = | |
1695 | mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER; | |
1696 | uinfo->count = 1; | |
1697 | uinfo->value.integer.min = 0; | |
1698 | uinfo->value.integer.max = mask; | |
1699 | return 0; | |
1700 | } | |
1701 | EXPORT_SYMBOL_GPL(snd_soc_info_volsw_ext); | |
1702 | ||
1703 | /** | |
1704 | * snd_soc_info_bool_ext - external single boolean mixer info callback | |
1705 | * @kcontrol: mixer control | |
1706 | * @uinfo: control element information | |
1707 | * | |
1708 | * Callback to provide information about a single boolean external mixer control. | |
1709 | * | |
1710 | * Returns 0 for success. | |
1711 | */ | |
1712 | int snd_soc_info_bool_ext(struct snd_kcontrol *kcontrol, | |
1713 | struct snd_ctl_elem_info *uinfo) | |
1714 | { | |
1715 | uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; | |
1716 | uinfo->count = 1; | |
1717 | uinfo->value.integer.min = 0; | |
1718 | uinfo->value.integer.max = 1; | |
1719 | return 0; | |
1720 | } | |
1721 | EXPORT_SYMBOL_GPL(snd_soc_info_bool_ext); | |
1722 | ||
1723 | /** | |
1724 | * snd_soc_info_volsw - single mixer info callback | |
1725 | * @kcontrol: mixer control | |
1726 | * @uinfo: control element information | |
1727 | * | |
1728 | * Callback to provide information about a single mixer control. | |
1729 | * | |
1730 | * Returns 0 for success. | |
1731 | */ | |
1732 | int snd_soc_info_volsw(struct snd_kcontrol *kcontrol, | |
1733 | struct snd_ctl_elem_info *uinfo) | |
1734 | { | |
1735 | int mask = (kcontrol->private_value >> 16) & 0xff; | |
1736 | int shift = (kcontrol->private_value >> 8) & 0x0f; | |
1737 | int rshift = (kcontrol->private_value >> 12) & 0x0f; | |
1738 | ||
1739 | uinfo->type = | |
1740 | mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER; | |
1741 | uinfo->count = shift == rshift ? 1 : 2; | |
1742 | uinfo->value.integer.min = 0; | |
1743 | uinfo->value.integer.max = mask; | |
1744 | return 0; | |
1745 | } | |
1746 | EXPORT_SYMBOL_GPL(snd_soc_info_volsw); | |
1747 | ||
1748 | /** | |
1749 | * snd_soc_get_volsw - single mixer get callback | |
1750 | * @kcontrol: mixer control | |
1751 | * @uinfo: control element information | |
1752 | * | |
1753 | * Callback to get the value of a single mixer control. | |
1754 | * | |
1755 | * Returns 0 for success. | |
1756 | */ | |
1757 | int snd_soc_get_volsw(struct snd_kcontrol *kcontrol, | |
1758 | struct snd_ctl_elem_value *ucontrol) | |
1759 | { | |
1760 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
1761 | int reg = kcontrol->private_value & 0xff; | |
1762 | int shift = (kcontrol->private_value >> 8) & 0x0f; | |
1763 | int rshift = (kcontrol->private_value >> 12) & 0x0f; | |
1764 | int mask = (kcontrol->private_value >> 16) & 0xff; | |
1765 | int invert = (kcontrol->private_value >> 24) & 0x01; | |
1766 | ||
1767 | ucontrol->value.integer.value[0] = | |
1768 | (snd_soc_read(codec, reg) >> shift) & mask; | |
1769 | if (shift != rshift) | |
1770 | ucontrol->value.integer.value[1] = | |
1771 | (snd_soc_read(codec, reg) >> rshift) & mask; | |
1772 | if (invert) { | |
1773 | ucontrol->value.integer.value[0] = | |
1774 | mask - ucontrol->value.integer.value[0]; | |
1775 | if (shift != rshift) | |
1776 | ucontrol->value.integer.value[1] = | |
1777 | mask - ucontrol->value.integer.value[1]; | |
1778 | } | |
1779 | ||
1780 | return 0; | |
1781 | } | |
1782 | EXPORT_SYMBOL_GPL(snd_soc_get_volsw); | |
1783 | ||
1784 | /** | |
1785 | * snd_soc_put_volsw - single mixer put callback | |
1786 | * @kcontrol: mixer control | |
1787 | * @uinfo: control element information | |
1788 | * | |
1789 | * Callback to set the value of a single mixer control. | |
1790 | * | |
1791 | * Returns 0 for success. | |
1792 | */ | |
1793 | int snd_soc_put_volsw(struct snd_kcontrol *kcontrol, | |
1794 | struct snd_ctl_elem_value *ucontrol) | |
1795 | { | |
1796 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
1797 | int reg = kcontrol->private_value & 0xff; | |
1798 | int shift = (kcontrol->private_value >> 8) & 0x0f; | |
1799 | int rshift = (kcontrol->private_value >> 12) & 0x0f; | |
1800 | int mask = (kcontrol->private_value >> 16) & 0xff; | |
1801 | int invert = (kcontrol->private_value >> 24) & 0x01; | |
1802 | int err; | |
1803 | unsigned short val, val2, val_mask; | |
1804 | ||
1805 | val = (ucontrol->value.integer.value[0] & mask); | |
1806 | if (invert) | |
1807 | val = mask - val; | |
1808 | val_mask = mask << shift; | |
1809 | val = val << shift; | |
1810 | if (shift != rshift) { | |
1811 | val2 = (ucontrol->value.integer.value[1] & mask); | |
1812 | if (invert) | |
1813 | val2 = mask - val2; | |
1814 | val_mask |= mask << rshift; | |
1815 | val |= val2 << rshift; | |
1816 | } | |
1817 | err = snd_soc_update_bits(codec, reg, val_mask, val); | |
1818 | return err; | |
1819 | } | |
1820 | EXPORT_SYMBOL_GPL(snd_soc_put_volsw); | |
1821 | ||
1822 | /** | |
1823 | * snd_soc_info_volsw_2r - double mixer info callback | |
1824 | * @kcontrol: mixer control | |
1825 | * @uinfo: control element information | |
1826 | * | |
1827 | * Callback to provide information about a double mixer control that | |
1828 | * spans 2 codec registers. | |
1829 | * | |
1830 | * Returns 0 for success. | |
1831 | */ | |
1832 | int snd_soc_info_volsw_2r(struct snd_kcontrol *kcontrol, | |
1833 | struct snd_ctl_elem_info *uinfo) | |
1834 | { | |
1835 | int mask = (kcontrol->private_value >> 12) & 0xff; | |
1836 | ||
1837 | uinfo->type = | |
1838 | mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER; | |
1839 | uinfo->count = 2; | |
1840 | uinfo->value.integer.min = 0; | |
1841 | uinfo->value.integer.max = mask; | |
1842 | return 0; | |
1843 | } | |
1844 | EXPORT_SYMBOL_GPL(snd_soc_info_volsw_2r); | |
1845 | ||
1846 | /** | |
1847 | * snd_soc_get_volsw_2r - double mixer get callback | |
1848 | * @kcontrol: mixer control | |
1849 | * @uinfo: control element information | |
1850 | * | |
1851 | * Callback to get the value of a double mixer control that spans 2 registers. | |
1852 | * | |
1853 | * Returns 0 for success. | |
1854 | */ | |
1855 | int snd_soc_get_volsw_2r(struct snd_kcontrol *kcontrol, | |
1856 | struct snd_ctl_elem_value *ucontrol) | |
1857 | { | |
1858 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
1859 | int reg = kcontrol->private_value & 0xff; | |
1860 | int reg2 = (kcontrol->private_value >> 24) & 0xff; | |
1861 | int shift = (kcontrol->private_value >> 8) & 0x0f; | |
1862 | int mask = (kcontrol->private_value >> 12) & 0xff; | |
1863 | int invert = (kcontrol->private_value >> 20) & 0x01; | |
1864 | ||
1865 | ucontrol->value.integer.value[0] = | |
1866 | (snd_soc_read(codec, reg) >> shift) & mask; | |
1867 | ucontrol->value.integer.value[1] = | |
1868 | (snd_soc_read(codec, reg2) >> shift) & mask; | |
1869 | if (invert) { | |
1870 | ucontrol->value.integer.value[0] = | |
1871 | mask - ucontrol->value.integer.value[0]; | |
1872 | ucontrol->value.integer.value[1] = | |
1873 | mask - ucontrol->value.integer.value[1]; | |
1874 | } | |
1875 | ||
1876 | return 0; | |
1877 | } | |
1878 | EXPORT_SYMBOL_GPL(snd_soc_get_volsw_2r); | |
1879 | ||
1880 | /** | |
1881 | * snd_soc_put_volsw_2r - double mixer set callback | |
1882 | * @kcontrol: mixer control | |
1883 | * @uinfo: control element information | |
1884 | * | |
1885 | * Callback to set the value of a double mixer control that spans 2 registers. | |
1886 | * | |
1887 | * Returns 0 for success. | |
1888 | */ | |
1889 | int snd_soc_put_volsw_2r(struct snd_kcontrol *kcontrol, | |
1890 | struct snd_ctl_elem_value *ucontrol) | |
1891 | { | |
1892 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
1893 | int reg = kcontrol->private_value & 0xff; | |
1894 | int reg2 = (kcontrol->private_value >> 24) & 0xff; | |
1895 | int shift = (kcontrol->private_value >> 8) & 0x0f; | |
1896 | int mask = (kcontrol->private_value >> 12) & 0xff; | |
1897 | int invert = (kcontrol->private_value >> 20) & 0x01; | |
1898 | int err; | |
1899 | unsigned short val, val2, val_mask; | |
1900 | ||
1901 | val_mask = mask << shift; | |
1902 | val = (ucontrol->value.integer.value[0] & mask); | |
1903 | val2 = (ucontrol->value.integer.value[1] & mask); | |
1904 | ||
1905 | if (invert) { | |
1906 | val = mask - val; | |
1907 | val2 = mask - val2; | |
1908 | } | |
1909 | ||
1910 | val = val << shift; | |
1911 | val2 = val2 << shift; | |
1912 | ||
1913 | if ((err = snd_soc_update_bits(codec, reg, val_mask, val)) < 0) | |
1914 | return err; | |
1915 | ||
1916 | err = snd_soc_update_bits(codec, reg2, val_mask, val2); | |
1917 | return err; | |
1918 | } | |
1919 | EXPORT_SYMBOL_GPL(snd_soc_put_volsw_2r); | |
1920 | ||
1921 | static int __devinit snd_soc_init(void) | |
1922 | { | |
1923 | printk(KERN_INFO "ASoC version %s\n", SND_SOC_VERSION); | |
1924 | return platform_driver_register(&soc_driver); | |
1925 | } | |
1926 | ||
1927 | static void snd_soc_exit(void) | |
1928 | { | |
1929 | platform_driver_unregister(&soc_driver); | |
1930 | } | |
1931 | ||
1932 | module_init(snd_soc_init); | |
1933 | module_exit(snd_soc_exit); | |
1934 | ||
1935 | /* Module information */ | |
1936 | MODULE_AUTHOR("Liam Girdwood, liam.girdwood@wolfsonmicro.com, www.wolfsonmicro.com"); | |
1937 | MODULE_DESCRIPTION("ALSA SoC Core"); | |
1938 | MODULE_LICENSE("GPL"); |