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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 | ||
a71a468a LG |
54 | #define CODEC_CPU(codec, cpu) ((codec << 4) | cpu) |
55 | ||
db2a4165 FM |
56 | static DEFINE_MUTEX(pcm_mutex); |
57 | static DEFINE_MUTEX(io_mutex); | |
58 | static struct workqueue_struct *soc_workq; | |
59 | static struct work_struct soc_stream_work; | |
60 | static DECLARE_WAIT_QUEUE_HEAD(soc_pm_waitq); | |
61 | ||
62 | /* supported sample rates */ | |
63 | /* ATTENTION: these values depend on the definition in pcm.h! */ | |
64 | static const unsigned int rates[] = { | |
65 | 5512, 8000, 11025, 16000, 22050, 32000, 44100, | |
66 | 48000, 64000, 88200, 96000, 176400, 192000 | |
67 | }; | |
68 | ||
69 | /* | |
70 | * This is a timeout to do a DAPM powerdown after a stream is closed(). | |
71 | * It can be used to eliminate pops between different playback streams, e.g. | |
72 | * between two audio tracks. | |
73 | */ | |
74 | static int pmdown_time = 5000; | |
75 | module_param(pmdown_time, int, 0); | |
76 | MODULE_PARM_DESC(pmdown_time, "DAPM stream powerdown time (msecs)"); | |
77 | ||
78 | #ifdef CONFIG_SND_SOC_AC97_BUS | |
79 | /* unregister ac97 codec */ | |
80 | static int soc_ac97_dev_unregister(struct snd_soc_codec *codec) | |
81 | { | |
82 | if (codec->ac97->dev.bus) | |
83 | device_unregister(&codec->ac97->dev); | |
84 | return 0; | |
85 | } | |
86 | ||
87 | /* stop no dev release warning */ | |
88 | static void soc_ac97_device_release(struct device *dev){} | |
89 | ||
90 | /* register ac97 codec to bus */ | |
91 | static int soc_ac97_dev_register(struct snd_soc_codec *codec) | |
92 | { | |
93 | int err; | |
94 | ||
95 | codec->ac97->dev.bus = &ac97_bus_type; | |
96 | codec->ac97->dev.parent = NULL; | |
97 | codec->ac97->dev.release = soc_ac97_device_release; | |
98 | ||
99 | snprintf(codec->ac97->dev.bus_id, BUS_ID_SIZE, "%d-%d:%s", | |
100 | codec->card->number, 0, codec->name); | |
101 | err = device_register(&codec->ac97->dev); | |
102 | if (err < 0) { | |
103 | snd_printk(KERN_ERR "Can't register ac97 bus\n"); | |
104 | codec->ac97->dev.bus = NULL; | |
105 | return err; | |
106 | } | |
107 | return 0; | |
108 | } | |
109 | #endif | |
110 | ||
111 | static inline const char* get_dai_name(int type) | |
112 | { | |
113 | switch(type) { | |
114 | case SND_SOC_DAI_AC97: | |
115 | return "AC97"; | |
116 | case SND_SOC_DAI_I2S: | |
117 | return "I2S"; | |
118 | case SND_SOC_DAI_PCM: | |
119 | return "PCM"; | |
120 | } | |
121 | return NULL; | |
122 | } | |
123 | ||
124 | /* get rate format from rate */ | |
125 | static inline int soc_get_rate_format(int rate) | |
126 | { | |
127 | int i; | |
128 | ||
129 | for (i = 0; i < ARRAY_SIZE(rates); i++) { | |
130 | if (rates[i] == rate) | |
131 | return 1 << i; | |
132 | } | |
133 | return 0; | |
134 | } | |
135 | ||
136 | /* gets the audio system mclk/sysclk for the given parameters */ | |
137 | static unsigned inline int soc_get_mclk(struct snd_soc_pcm_runtime *rtd, | |
138 | struct snd_soc_clock_info *info) | |
139 | { | |
140 | struct snd_soc_device *socdev = rtd->socdev; | |
141 | struct snd_soc_machine *machine = socdev->machine; | |
142 | int i; | |
143 | ||
144 | /* find the matching machine config and get it's mclk for the given | |
145 | * sample rate and hardware format */ | |
146 | for(i = 0; i < machine->num_links; i++) { | |
147 | if (machine->dai_link[i].cpu_dai == rtd->cpu_dai && | |
148 | machine->dai_link[i].config_sysclk) | |
149 | return machine->dai_link[i].config_sysclk(rtd, info); | |
150 | } | |
151 | return 0; | |
152 | } | |
153 | ||
154 | /* changes a bitclk multiplier mask to a divider mask */ | |
a71a468a | 155 | static u64 soc_bfs_rcw_to_div(u64 bfs, int rate, unsigned int mclk, |
db2a4165 FM |
156 | unsigned int pcmfmt, unsigned int chn) |
157 | { | |
158 | int i, j; | |
a71a468a | 159 | u64 bfs_ = 0; |
db2a4165 FM |
160 | int size = snd_pcm_format_physical_width(pcmfmt), min = 0; |
161 | ||
162 | if (size <= 0) | |
163 | return 0; | |
164 | ||
165 | /* the minimum bit clock that has enough bandwidth */ | |
166 | min = size * rate * chn; | |
a71a468a | 167 | dbgc("rcw --> div min bclk %d with mclk %d\n", min, mclk); |
db2a4165 | 168 | |
a71a468a | 169 | for (i = 0; i < 64; i++) { |
db2a4165 | 170 | if ((bfs >> i) & 0x1) { |
a71a468a LG |
171 | j = min * (i + 1); |
172 | bfs_ |= SND_SOC_FSBD(mclk/j); | |
173 | dbgc("rcw --> div support mult %d\n", | |
174 | SND_SOC_FSBD_REAL(1<<i)); | |
db2a4165 FM |
175 | } |
176 | } | |
177 | ||
178 | return bfs_; | |
179 | } | |
180 | ||
181 | /* changes a bitclk divider mask to a multiplier mask */ | |
a71a468a | 182 | static u64 soc_bfs_div_to_rcw(u64 bfs, int rate, unsigned int mclk, |
db2a4165 FM |
183 | unsigned int pcmfmt, unsigned int chn) |
184 | { | |
185 | int i, j; | |
a71a468a | 186 | u64 bfs_ = 0; |
db2a4165 FM |
187 | |
188 | int size = snd_pcm_format_physical_width(pcmfmt), min = 0; | |
189 | ||
190 | if (size <= 0) | |
191 | return 0; | |
192 | ||
193 | /* the minimum bit clock that has enough bandwidth */ | |
194 | min = size * rate * chn; | |
a71a468a | 195 | dbgc("div to rcw min bclk %d with mclk %d\n", min, mclk); |
db2a4165 | 196 | |
a71a468a | 197 | for (i = 0; i < 64; i++) { |
db2a4165 | 198 | if ((bfs >> i) & 0x1) { |
a71a468a | 199 | j = mclk / (i + 1); |
db2a4165 | 200 | if (j >= min) { |
a71a468a LG |
201 | bfs_ |= SND_SOC_FSBW(j/min); |
202 | dbgc("div --> rcw support div %d\n", | |
203 | SND_SOC_FSBW_REAL(1<<i)); | |
db2a4165 FM |
204 | } |
205 | } | |
206 | } | |
207 | ||
208 | return bfs_; | |
209 | } | |
210 | ||
a71a468a LG |
211 | /* changes a constant bitclk to a multiplier mask */ |
212 | static u64 soc_bfs_rate_to_rcw(u64 bfs, int rate, unsigned int mclk, | |
213 | unsigned int pcmfmt, unsigned int chn) | |
214 | { | |
215 | unsigned int bfs_ = rate * bfs; | |
216 | int size = snd_pcm_format_physical_width(pcmfmt), min = 0; | |
217 | ||
218 | if (size <= 0) | |
219 | return 0; | |
220 | ||
221 | /* the minimum bit clock that has enough bandwidth */ | |
222 | min = size * rate * chn; | |
223 | dbgc("rate --> rcw min bclk %d with mclk %d\n", min, mclk); | |
224 | ||
225 | if (bfs_ < min) | |
226 | return 0; | |
227 | else { | |
228 | bfs_ = SND_SOC_FSBW(bfs_/min); | |
229 | dbgc("rate --> rcw support div %d\n", SND_SOC_FSBW_REAL(bfs_)); | |
230 | return bfs_; | |
231 | } | |
232 | } | |
233 | ||
234 | /* changes a bitclk multiplier mask to a divider mask */ | |
235 | static u64 soc_bfs_rate_to_div(u64 bfs, int rate, unsigned int mclk, | |
236 | unsigned int pcmfmt, unsigned int chn) | |
237 | { | |
238 | unsigned int bfs_ = rate * bfs; | |
239 | int size = snd_pcm_format_physical_width(pcmfmt), min = 0; | |
240 | ||
241 | if (size <= 0) | |
242 | return 0; | |
243 | ||
244 | /* the minimum bit clock that has enough bandwidth */ | |
245 | min = size * rate * chn; | |
246 | dbgc("rate --> div min bclk %d with mclk %d\n", min, mclk); | |
247 | ||
248 | if (bfs_ < min) | |
249 | return 0; | |
250 | else { | |
251 | bfs_ = SND_SOC_FSBW(mclk/bfs_); | |
252 | dbgc("rate --> div support div %d\n", SND_SOC_FSBD_REAL(bfs_)); | |
253 | return bfs_; | |
254 | } | |
255 | } | |
256 | ||
db2a4165 FM |
257 | /* Matches codec DAI and SoC CPU DAI hardware parameters */ |
258 | static int soc_hw_match_params(struct snd_pcm_substream *substream, | |
259 | struct snd_pcm_hw_params *params) | |
260 | { | |
261 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
262 | struct snd_soc_dai_mode *codec_dai_mode = NULL; | |
263 | struct snd_soc_dai_mode *cpu_dai_mode = NULL; | |
264 | struct snd_soc_clock_info clk_info; | |
a71a468a | 265 | unsigned int fs, mclk, rate = params_rate(params), |
db2a4165 FM |
266 | chn, j, k, cpu_bclk, codec_bclk, pcmrate; |
267 | u16 fmt = 0; | |
a71a468a | 268 | u64 codec_bfs, cpu_bfs; |
db2a4165 FM |
269 | |
270 | dbg("asoc: match version %s\n", SND_SOC_VERSION); | |
271 | clk_info.rate = rate; | |
272 | pcmrate = soc_get_rate_format(rate); | |
273 | ||
274 | /* try and find a match from the codec and cpu DAI capabilities */ | |
275 | for (j = 0; j < rtd->codec_dai->caps.num_modes; j++) { | |
276 | for (k = 0; k < rtd->cpu_dai->caps.num_modes; k++) { | |
277 | codec_dai_mode = &rtd->codec_dai->caps.mode[j]; | |
278 | cpu_dai_mode = &rtd->cpu_dai->caps.mode[k]; | |
279 | ||
280 | if (!(codec_dai_mode->pcmrate & cpu_dai_mode->pcmrate & | |
281 | pcmrate)) { | |
282 | dbgc("asoc: DAI[%d:%d] failed to match rate\n", j, k); | |
283 | continue; | |
284 | } | |
285 | ||
286 | fmt = codec_dai_mode->fmt & cpu_dai_mode->fmt; | |
287 | if (!(fmt & SND_SOC_DAIFMT_FORMAT_MASK)) { | |
288 | dbgc("asoc: DAI[%d:%d] failed to match format\n", j, k); | |
289 | continue; | |
290 | } | |
291 | ||
292 | if (!(fmt & SND_SOC_DAIFMT_CLOCK_MASK)) { | |
293 | dbgc("asoc: DAI[%d:%d] failed to match clock masters\n", | |
294 | j, k); | |
295 | continue; | |
296 | } | |
297 | ||
298 | if (!(fmt & SND_SOC_DAIFMT_INV_MASK)) { | |
299 | dbgc("asoc: DAI[%d:%d] failed to match invert\n", j, k); | |
300 | continue; | |
301 | } | |
302 | ||
303 | if (!(codec_dai_mode->pcmfmt & cpu_dai_mode->pcmfmt)) { | |
304 | dbgc("asoc: DAI[%d:%d] failed to match pcm format\n", j, k); | |
305 | continue; | |
306 | } | |
307 | ||
308 | if (!(codec_dai_mode->pcmdir & cpu_dai_mode->pcmdir)) { | |
309 | dbgc("asoc: DAI[%d:%d] failed to match direction\n", j, k); | |
310 | continue; | |
311 | } | |
312 | ||
313 | /* todo - still need to add tdm selection */ | |
314 | rtd->cpu_dai->dai_runtime.fmt = | |
315 | rtd->codec_dai->dai_runtime.fmt = | |
316 | 1 << (ffs(fmt & SND_SOC_DAIFMT_FORMAT_MASK) -1) | | |
317 | 1 << (ffs(fmt & SND_SOC_DAIFMT_CLOCK_MASK) - 1) | | |
318 | 1 << (ffs(fmt & SND_SOC_DAIFMT_INV_MASK) - 1); | |
319 | clk_info.bclk_master = | |
320 | rtd->cpu_dai->dai_runtime.fmt & SND_SOC_DAIFMT_CLOCK_MASK; | |
321 | ||
322 | /* make sure the ratio between rate and master | |
323 | * clock is acceptable*/ | |
324 | fs = (cpu_dai_mode->fs & codec_dai_mode->fs); | |
325 | if (fs == 0) { | |
326 | dbgc("asoc: DAI[%d:%d] failed to match FS\n", j, k); | |
327 | continue; | |
328 | } | |
329 | clk_info.fs = rtd->cpu_dai->dai_runtime.fs = | |
330 | rtd->codec_dai->dai_runtime.fs = fs; | |
331 | ||
332 | /* calculate audio system clocking using slowest clocks possible*/ | |
333 | mclk = soc_get_mclk(rtd, &clk_info); | |
334 | if (mclk == 0) { | |
335 | dbgc("asoc: DAI[%d:%d] configuration not clockable\n", j, k); | |
336 | dbgc("asoc: rate %d fs %d master %x\n", rate, fs, | |
337 | clk_info.bclk_master); | |
338 | continue; | |
339 | } | |
340 | ||
341 | /* calculate word size (per channel) and frame size */ | |
342 | rtd->codec_dai->dai_runtime.pcmfmt = | |
343 | rtd->cpu_dai->dai_runtime.pcmfmt = | |
344 | 1 << params_format(params); | |
345 | ||
346 | chn = params_channels(params); | |
347 | /* i2s always has left and right */ | |
348 | if (params_channels(params) == 1 && | |
349 | rtd->cpu_dai->dai_runtime.fmt & (SND_SOC_DAIFMT_I2S | | |
350 | SND_SOC_DAIFMT_RIGHT_J | SND_SOC_DAIFMT_LEFT_J)) | |
351 | chn <<= 1; | |
352 | ||
353 | /* Calculate bfs - the ratio between bitclock and the sample rate | |
354 | * We must take into consideration the dividers and multipliers | |
355 | * used in the codec and cpu DAI modes. We always choose the | |
356 | * lowest possible clocks to reduce power. | |
357 | */ | |
a71a468a LG |
358 | switch (CODEC_CPU(codec_dai_mode->flags, cpu_dai_mode->flags)) { |
359 | case CODEC_CPU(SND_SOC_DAI_BFS_DIV, SND_SOC_DAI_BFS_DIV): | |
db2a4165 FM |
360 | /* cpu & codec bfs dividers */ |
361 | rtd->cpu_dai->dai_runtime.bfs = | |
362 | rtd->codec_dai->dai_runtime.bfs = | |
363 | 1 << (fls(codec_dai_mode->bfs & cpu_dai_mode->bfs) - 1); | |
a71a468a LG |
364 | break; |
365 | case CODEC_CPU(SND_SOC_DAI_BFS_DIV, SND_SOC_DAI_BFS_RCW): | |
366 | /* normalise bfs codec divider & cpu rcw mult */ | |
367 | codec_bfs = soc_bfs_div_to_rcw(codec_dai_mode->bfs, rate, | |
db2a4165 FM |
368 | mclk, rtd->codec_dai->dai_runtime.pcmfmt, chn); |
369 | rtd->cpu_dai->dai_runtime.bfs = | |
370 | 1 << (ffs(codec_bfs & cpu_dai_mode->bfs) - 1); | |
a71a468a | 371 | cpu_bfs = soc_bfs_rcw_to_div(cpu_dai_mode->bfs, rate, mclk, |
db2a4165 FM |
372 | rtd->codec_dai->dai_runtime.pcmfmt, chn); |
373 | rtd->codec_dai->dai_runtime.bfs = | |
374 | 1 << (fls(codec_dai_mode->bfs & cpu_bfs) - 1); | |
a71a468a LG |
375 | break; |
376 | case CODEC_CPU(SND_SOC_DAI_BFS_RCW, SND_SOC_DAI_BFS_DIV): | |
377 | /* normalise bfs codec rcw mult & cpu divider */ | |
378 | codec_bfs = soc_bfs_rcw_to_div(codec_dai_mode->bfs, rate, | |
db2a4165 FM |
379 | mclk, rtd->codec_dai->dai_runtime.pcmfmt, chn); |
380 | rtd->cpu_dai->dai_runtime.bfs = | |
381 | 1 << (fls(codec_bfs & cpu_dai_mode->bfs) -1); | |
a71a468a | 382 | cpu_bfs = soc_bfs_div_to_rcw(cpu_dai_mode->bfs, rate, mclk, |
db2a4165 FM |
383 | rtd->codec_dai->dai_runtime.pcmfmt, chn); |
384 | rtd->codec_dai->dai_runtime.bfs = | |
385 | 1 << (ffs(codec_dai_mode->bfs & cpu_bfs) -1); | |
a71a468a LG |
386 | break; |
387 | case CODEC_CPU(SND_SOC_DAI_BFS_RCW, SND_SOC_DAI_BFS_RCW): | |
388 | /* codec & cpu bfs rate rcw multipliers */ | |
db2a4165 FM |
389 | rtd->cpu_dai->dai_runtime.bfs = |
390 | rtd->codec_dai->dai_runtime.bfs = | |
391 | 1 << (ffs(codec_dai_mode->bfs & cpu_dai_mode->bfs) -1); | |
a71a468a LG |
392 | break; |
393 | case CODEC_CPU(SND_SOC_DAI_BFS_DIV, SND_SOC_DAI_BFS_RATE): | |
394 | /* normalise cpu bfs rate const multiplier & codec div */ | |
395 | cpu_bfs = soc_bfs_rate_to_div(cpu_dai_mode->bfs, rate, | |
396 | mclk, rtd->codec_dai->dai_runtime.pcmfmt, chn); | |
397 | if(codec_dai_mode->bfs & cpu_bfs) { | |
398 | rtd->codec_dai->dai_runtime.bfs = cpu_bfs; | |
399 | rtd->cpu_dai->dai_runtime.bfs = cpu_dai_mode->bfs; | |
400 | } else | |
401 | rtd->cpu_dai->dai_runtime.bfs = 0; | |
402 | break; | |
403 | case CODEC_CPU(SND_SOC_DAI_BFS_RCW, SND_SOC_DAI_BFS_RATE): | |
404 | /* normalise cpu bfs rate const multiplier & codec rcw mult */ | |
405 | cpu_bfs = soc_bfs_rate_to_rcw(cpu_dai_mode->bfs, rate, | |
406 | mclk, rtd->codec_dai->dai_runtime.pcmfmt, chn); | |
407 | if(codec_dai_mode->bfs & cpu_bfs) { | |
408 | rtd->codec_dai->dai_runtime.bfs = cpu_bfs; | |
409 | rtd->cpu_dai->dai_runtime.bfs = cpu_dai_mode->bfs; | |
410 | } else | |
411 | rtd->cpu_dai->dai_runtime.bfs = 0; | |
412 | break; | |
413 | case CODEC_CPU(SND_SOC_DAI_BFS_RATE, SND_SOC_DAI_BFS_RCW): | |
414 | /* normalise cpu bfs rate rcw multiplier & codec const mult */ | |
415 | codec_bfs = soc_bfs_rate_to_rcw(codec_dai_mode->bfs, rate, | |
416 | mclk, rtd->codec_dai->dai_runtime.pcmfmt, chn); | |
417 | if(cpu_dai_mode->bfs & codec_bfs) { | |
418 | rtd->cpu_dai->dai_runtime.bfs = codec_bfs; | |
419 | rtd->codec_dai->dai_runtime.bfs = codec_dai_mode->bfs; | |
420 | } else | |
421 | rtd->cpu_dai->dai_runtime.bfs = 0; | |
422 | break; | |
423 | case CODEC_CPU(SND_SOC_DAI_BFS_RATE, SND_SOC_DAI_BFS_DIV): | |
424 | /* normalise cpu bfs div & codec const mult */ | |
425 | codec_bfs = soc_bfs_rate_to_div(codec_dai_mode->bfs, rate, | |
426 | mclk, rtd->codec_dai->dai_runtime.pcmfmt, chn); | |
427 | if(codec_dai_mode->bfs & codec_bfs) { | |
428 | rtd->cpu_dai->dai_runtime.bfs = codec_bfs; | |
429 | rtd->codec_dai->dai_runtime.bfs = codec_dai_mode->bfs; | |
430 | } else | |
431 | rtd->cpu_dai->dai_runtime.bfs = 0; | |
432 | break; | |
433 | case CODEC_CPU(SND_SOC_DAI_BFS_RATE, SND_SOC_DAI_BFS_RATE): | |
434 | /* cpu & codec constant mult */ | |
435 | if(codec_dai_mode->bfs == cpu_dai_mode->bfs) | |
436 | rtd->cpu_dai->dai_runtime.bfs = | |
437 | rtd->codec_dai->dai_runtime.bfs = | |
438 | codec_dai_mode->bfs; | |
439 | else | |
440 | rtd->cpu_dai->dai_runtime.bfs = | |
441 | rtd->codec_dai->dai_runtime.bfs = 0; | |
442 | break; | |
db2a4165 FM |
443 | } |
444 | ||
445 | /* make sure the bit clock speed is acceptable */ | |
446 | if (!rtd->cpu_dai->dai_runtime.bfs || | |
447 | !rtd->codec_dai->dai_runtime.bfs) { | |
448 | dbgc("asoc: DAI[%d:%d] failed to match BFS\n", j, k); | |
a71a468a | 449 | dbgc("asoc: cpu_dai %llu codec %llu\n", |
db2a4165 FM |
450 | rtd->cpu_dai->dai_runtime.bfs, |
451 | rtd->codec_dai->dai_runtime.bfs); | |
452 | dbgc("asoc: mclk %d hwfmt %x\n", mclk, fmt); | |
453 | continue; | |
454 | } | |
455 | ||
456 | goto found; | |
457 | } | |
458 | } | |
459 | printk(KERN_ERR "asoc: no matching DAI found between codec and CPU\n"); | |
460 | return -EINVAL; | |
461 | ||
462 | found: | |
463 | /* we have matching DAI's, so complete the runtime info */ | |
464 | rtd->codec_dai->dai_runtime.pcmrate = | |
465 | rtd->cpu_dai->dai_runtime.pcmrate = | |
466 | soc_get_rate_format(rate); | |
467 | ||
468 | rtd->codec_dai->dai_runtime.priv = codec_dai_mode->priv; | |
469 | rtd->cpu_dai->dai_runtime.priv = cpu_dai_mode->priv; | |
470 | rtd->codec_dai->dai_runtime.flags = codec_dai_mode->flags; | |
471 | rtd->cpu_dai->dai_runtime.flags = cpu_dai_mode->flags; | |
472 | ||
473 | /* for debug atm */ | |
474 | dbg("asoc: DAI[%d:%d] Match OK\n", j, k); | |
475 | if (rtd->codec_dai->dai_runtime.flags == SND_SOC_DAI_BFS_DIV) { | |
476 | codec_bclk = (rtd->codec_dai->dai_runtime.fs * params_rate(params)) / | |
477 | SND_SOC_FSBD_REAL(rtd->codec_dai->dai_runtime.bfs); | |
478 | dbg("asoc: codec fs %d mclk %d bfs div %d bclk %d\n", | |
479 | rtd->codec_dai->dai_runtime.fs, mclk, | |
480 | SND_SOC_FSBD_REAL(rtd->codec_dai->dai_runtime.bfs), codec_bclk); | |
a71a468a LG |
481 | } else if(rtd->codec_dai->dai_runtime.flags == SND_SOC_DAI_BFS_RATE) { |
482 | codec_bclk = params_rate(params) * rtd->codec_dai->dai_runtime.bfs; | |
483 | dbg("asoc: codec fs %d mclk %d bfs rate mult %llu bclk %d\n", | |
db2a4165 | 484 | rtd->codec_dai->dai_runtime.fs, mclk, |
a71a468a LG |
485 | rtd->codec_dai->dai_runtime.bfs, codec_bclk); |
486 | } else if (rtd->cpu_dai->dai_runtime.flags == SND_SOC_DAI_BFS_RCW) { | |
487 | codec_bclk = params_rate(params) * params_channels(params) * | |
488 | snd_pcm_format_physical_width(rtd->codec_dai->dai_runtime.pcmfmt) * | |
489 | SND_SOC_FSBW_REAL(rtd->codec_dai->dai_runtime.bfs); | |
490 | dbg("asoc: codec fs %d mclk %d bfs rcw mult %d bclk %d\n", | |
491 | rtd->codec_dai->dai_runtime.fs, mclk, | |
492 | SND_SOC_FSBW_REAL(rtd->codec_dai->dai_runtime.bfs), codec_bclk); | |
493 | } else | |
494 | codec_bclk = 0; | |
495 | ||
db2a4165 FM |
496 | if (rtd->cpu_dai->dai_runtime.flags == SND_SOC_DAI_BFS_DIV) { |
497 | cpu_bclk = (rtd->cpu_dai->dai_runtime.fs * params_rate(params)) / | |
498 | SND_SOC_FSBD_REAL(rtd->cpu_dai->dai_runtime.bfs); | |
499 | dbg("asoc: cpu fs %d mclk %d bfs div %d bclk %d\n", | |
500 | rtd->cpu_dai->dai_runtime.fs, mclk, | |
501 | SND_SOC_FSBD_REAL(rtd->cpu_dai->dai_runtime.bfs), cpu_bclk); | |
a71a468a LG |
502 | } else if (rtd->cpu_dai->dai_runtime.flags == SND_SOC_DAI_BFS_RATE) { |
503 | cpu_bclk = params_rate(params) * rtd->cpu_dai->dai_runtime.bfs; | |
504 | dbg("asoc: cpu fs %d mclk %d bfs rate mult %llu bclk %d\n", | |
db2a4165 | 505 | rtd->cpu_dai->dai_runtime.fs, mclk, |
a71a468a LG |
506 | rtd->cpu_dai->dai_runtime.bfs, cpu_bclk); |
507 | } else if (rtd->cpu_dai->dai_runtime.flags == SND_SOC_DAI_BFS_RCW) { | |
508 | cpu_bclk = params_rate(params) * params_channels(params) * | |
509 | snd_pcm_format_physical_width(rtd->cpu_dai->dai_runtime.pcmfmt) * | |
510 | SND_SOC_FSBW_REAL(rtd->cpu_dai->dai_runtime.bfs); | |
511 | dbg("asoc: cpu fs %d mclk %d bfs mult rcw %d bclk %d\n", | |
512 | rtd->cpu_dai->dai_runtime.fs, mclk, | |
513 | SND_SOC_FSBW_REAL(rtd->cpu_dai->dai_runtime.bfs), cpu_bclk); | |
514 | } else | |
515 | cpu_bclk = 0; | |
db2a4165 FM |
516 | |
517 | /* | |
518 | * Check we have matching bitclocks. If we don't then it means the | |
519 | * sysclock returned by either the codec or cpu DAI (selected by the | |
520 | * machine sysclock function) is wrong compared with the supported DAI | |
521 | * modes for the codec or cpu DAI. | |
522 | */ | |
a71a468a | 523 | if (cpu_bclk != codec_bclk && cpu_bclk){ |
db2a4165 FM |
524 | printk(KERN_ERR |
525 | "asoc: codec and cpu bitclocks differ, audio may be wrong speed\n" | |
526 | ); | |
527 | printk(KERN_ERR "asoc: codec %d != cpu %d\n", codec_bclk, cpu_bclk); | |
528 | } | |
529 | ||
530 | switch(rtd->cpu_dai->dai_runtime.fmt & SND_SOC_DAIFMT_CLOCK_MASK) { | |
531 | case SND_SOC_DAIFMT_CBM_CFM: | |
532 | dbg("asoc: DAI codec BCLK master, LRC master\n"); | |
533 | break; | |
534 | case SND_SOC_DAIFMT_CBS_CFM: | |
535 | dbg("asoc: DAI codec BCLK slave, LRC master\n"); | |
536 | break; | |
537 | case SND_SOC_DAIFMT_CBM_CFS: | |
538 | dbg("asoc: DAI codec BCLK master, LRC slave\n"); | |
539 | break; | |
540 | case SND_SOC_DAIFMT_CBS_CFS: | |
541 | dbg("asoc: DAI codec BCLK slave, LRC slave\n"); | |
542 | break; | |
543 | } | |
544 | dbg("asoc: mode %x, invert %x\n", | |
545 | rtd->cpu_dai->dai_runtime.fmt & SND_SOC_DAIFMT_FORMAT_MASK, | |
546 | rtd->cpu_dai->dai_runtime.fmt & SND_SOC_DAIFMT_INV_MASK); | |
547 | dbg("asoc: audio rate %d chn %d fmt %x\n", params_rate(params), | |
548 | params_channels(params), params_format(params)); | |
549 | ||
550 | return 0; | |
551 | } | |
552 | ||
553 | static inline u32 get_rates(struct snd_soc_dai_mode *modes, int nmodes) | |
554 | { | |
555 | int i; | |
556 | u32 rates = 0; | |
557 | ||
558 | for(i = 0; i < nmodes; i++) | |
559 | rates |= modes[i].pcmrate; | |
560 | ||
561 | return rates; | |
562 | } | |
563 | ||
564 | static inline u64 get_formats(struct snd_soc_dai_mode *modes, int nmodes) | |
565 | { | |
566 | int i; | |
567 | u64 formats = 0; | |
568 | ||
569 | for(i = 0; i < nmodes; i++) | |
570 | formats |= modes[i].pcmfmt; | |
571 | ||
572 | return formats; | |
573 | } | |
574 | ||
575 | /* | |
576 | * Called by ALSA when a PCM substream is opened, the runtime->hw record is | |
577 | * then initialized and any private data can be allocated. This also calls | |
578 | * startup for the cpu DAI, platform, machine and codec DAI. | |
579 | */ | |
580 | static int soc_pcm_open(struct snd_pcm_substream *substream) | |
581 | { | |
582 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
583 | struct snd_soc_device *socdev = rtd->socdev; | |
584 | struct snd_pcm_runtime *runtime = substream->runtime; | |
585 | struct snd_soc_machine *machine = socdev->machine; | |
586 | struct snd_soc_platform *platform = socdev->platform; | |
587 | struct snd_soc_codec_dai *codec_dai = rtd->codec_dai; | |
588 | struct snd_soc_cpu_dai *cpu_dai = rtd->cpu_dai; | |
589 | int ret = 0; | |
590 | ||
591 | mutex_lock(&pcm_mutex); | |
592 | ||
593 | /* startup the audio subsystem */ | |
594 | if (rtd->cpu_dai->ops.startup) { | |
595 | ret = rtd->cpu_dai->ops.startup(substream); | |
596 | if (ret < 0) { | |
597 | printk(KERN_ERR "asoc: can't open interface %s\n", | |
598 | rtd->cpu_dai->name); | |
599 | goto out; | |
600 | } | |
601 | } | |
602 | ||
603 | if (platform->pcm_ops->open) { | |
604 | ret = platform->pcm_ops->open(substream); | |
605 | if (ret < 0) { | |
606 | printk(KERN_ERR "asoc: can't open platform %s\n", platform->name); | |
607 | goto platform_err; | |
608 | } | |
609 | } | |
610 | ||
611 | if (machine->ops && machine->ops->startup) { | |
612 | ret = machine->ops->startup(substream); | |
613 | if (ret < 0) { | |
614 | printk(KERN_ERR "asoc: %s startup failed\n", machine->name); | |
615 | goto machine_err; | |
616 | } | |
617 | } | |
618 | ||
619 | if (rtd->codec_dai->ops.startup) { | |
620 | ret = rtd->codec_dai->ops.startup(substream); | |
621 | if (ret < 0) { | |
622 | printk(KERN_ERR "asoc: can't open codec %s\n", | |
623 | rtd->codec_dai->name); | |
624 | goto codec_dai_err; | |
625 | } | |
626 | } | |
627 | ||
628 | /* create runtime params from DMA, codec and cpu DAI */ | |
629 | if (runtime->hw.rates) | |
630 | runtime->hw.rates &= | |
631 | get_rates(codec_dai->caps.mode, codec_dai->caps.num_modes) & | |
632 | get_rates(cpu_dai->caps.mode, cpu_dai->caps.num_modes); | |
633 | else | |
634 | runtime->hw.rates = | |
635 | get_rates(codec_dai->caps.mode, codec_dai->caps.num_modes) & | |
636 | get_rates(cpu_dai->caps.mode, cpu_dai->caps.num_modes); | |
637 | if (runtime->hw.formats) | |
638 | runtime->hw.formats &= | |
639 | get_formats(codec_dai->caps.mode, codec_dai->caps.num_modes) & | |
640 | get_formats(cpu_dai->caps.mode, cpu_dai->caps.num_modes); | |
641 | else | |
642 | runtime->hw.formats = | |
643 | get_formats(codec_dai->caps.mode, codec_dai->caps.num_modes) & | |
644 | get_formats(cpu_dai->caps.mode, cpu_dai->caps.num_modes); | |
645 | ||
646 | /* Check that the codec and cpu DAI's are compatible */ | |
647 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
648 | runtime->hw.rate_min = | |
649 | max(rtd->codec_dai->playback.rate_min, | |
650 | rtd->cpu_dai->playback.rate_min); | |
651 | runtime->hw.rate_max = | |
652 | min(rtd->codec_dai->playback.rate_max, | |
653 | rtd->cpu_dai->playback.rate_max); | |
654 | runtime->hw.channels_min = | |
655 | max(rtd->codec_dai->playback.channels_min, | |
656 | rtd->cpu_dai->playback.channels_min); | |
657 | runtime->hw.channels_max = | |
658 | min(rtd->codec_dai->playback.channels_max, | |
659 | rtd->cpu_dai->playback.channels_max); | |
660 | } else { | |
661 | runtime->hw.rate_min = | |
662 | max(rtd->codec_dai->capture.rate_min, | |
663 | rtd->cpu_dai->capture.rate_min); | |
664 | runtime->hw.rate_max = | |
665 | min(rtd->codec_dai->capture.rate_max, | |
666 | rtd->cpu_dai->capture.rate_max); | |
667 | runtime->hw.channels_min = | |
668 | max(rtd->codec_dai->capture.channels_min, | |
669 | rtd->cpu_dai->capture.channels_min); | |
670 | runtime->hw.channels_max = | |
671 | min(rtd->codec_dai->capture.channels_max, | |
672 | rtd->cpu_dai->capture.channels_max); | |
673 | } | |
674 | ||
675 | snd_pcm_limit_hw_rates(runtime); | |
676 | if (!runtime->hw.rates) { | |
677 | printk(KERN_ERR "asoc: %s <-> %s No matching rates\n", | |
678 | rtd->codec_dai->name, rtd->cpu_dai->name); | |
679 | goto codec_dai_err; | |
680 | } | |
681 | if (!runtime->hw.formats) { | |
682 | printk(KERN_ERR "asoc: %s <-> %s No matching formats\n", | |
683 | rtd->codec_dai->name, rtd->cpu_dai->name); | |
684 | goto codec_dai_err; | |
685 | } | |
686 | if (!runtime->hw.channels_min || !runtime->hw.channels_max) { | |
687 | printk(KERN_ERR "asoc: %s <-> %s No matching channels\n", | |
688 | rtd->codec_dai->name, rtd->cpu_dai->name); | |
689 | goto codec_dai_err; | |
690 | } | |
691 | ||
692 | dbg("asoc: %s <-> %s info:\n", rtd->codec_dai->name, rtd->cpu_dai->name); | |
b5c5fd24 LG |
693 | dbg("asoc: rate mask 0x%x\n", runtime->hw.rates); |
694 | dbg("asoc: min ch %d max ch %d\n", runtime->hw.channels_min, | |
695 | runtime->hw.channels_max); | |
696 | dbg("asoc: min rate %d max rate %d\n", runtime->hw.rate_min, | |
697 | runtime->hw.rate_max); | |
db2a4165 FM |
698 | |
699 | ||
700 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
701 | rtd->cpu_dai->playback.active = rtd->codec_dai->playback.active = 1; | |
702 | else | |
703 | rtd->cpu_dai->capture.active = rtd->codec_dai->capture.active = 1; | |
704 | rtd->cpu_dai->active = rtd->codec_dai->active = 1; | |
705 | rtd->cpu_dai->runtime = runtime; | |
706 | socdev->codec->active++; | |
707 | mutex_unlock(&pcm_mutex); | |
708 | return 0; | |
709 | ||
710 | codec_dai_err: | |
711 | if (machine->ops && machine->ops->shutdown) | |
712 | machine->ops->shutdown(substream); | |
713 | ||
714 | machine_err: | |
715 | if (platform->pcm_ops->close) | |
716 | platform->pcm_ops->close(substream); | |
717 | ||
718 | platform_err: | |
719 | if (rtd->cpu_dai->ops.shutdown) | |
720 | rtd->cpu_dai->ops.shutdown(substream); | |
721 | out: | |
722 | mutex_unlock(&pcm_mutex); | |
723 | return ret; | |
724 | } | |
725 | ||
726 | /* | |
727 | * Power down the audio subsytem pmdown_time msecs after close is called. | |
728 | * This is to ensure there are no pops or clicks in between any music tracks | |
729 | * due to DAPM power cycling. | |
730 | */ | |
731 | static void close_delayed_work(void *data) | |
732 | { | |
733 | struct snd_soc_device *socdev = data; | |
734 | struct snd_soc_codec *codec = socdev->codec; | |
735 | struct snd_soc_codec_dai *codec_dai; | |
736 | int i; | |
737 | ||
738 | mutex_lock(&pcm_mutex); | |
739 | for(i = 0; i < codec->num_dai; i++) { | |
740 | codec_dai = &codec->dai[i]; | |
741 | ||
742 | dbg("pop wq checking: %s status: %s waiting: %s\n", | |
743 | codec_dai->playback.stream_name, | |
744 | codec_dai->playback.active ? "active" : "inactive", | |
745 | codec_dai->pop_wait ? "yes" : "no"); | |
746 | ||
747 | /* are we waiting on this codec DAI stream */ | |
748 | if (codec_dai->pop_wait == 1) { | |
749 | ||
750 | codec_dai->pop_wait = 0; | |
751 | snd_soc_dapm_stream_event(codec, codec_dai->playback.stream_name, | |
752 | SND_SOC_DAPM_STREAM_STOP); | |
753 | ||
754 | /* power down the codec power domain if no longer active */ | |
755 | if (codec->active == 0) { | |
756 | dbg("pop wq D3 %s %s\n", codec->name, | |
757 | codec_dai->playback.stream_name); | |
758 | if (codec->dapm_event) | |
759 | codec->dapm_event(codec, SNDRV_CTL_POWER_D3hot); | |
760 | } | |
761 | } | |
762 | } | |
763 | mutex_unlock(&pcm_mutex); | |
764 | } | |
765 | ||
766 | /* | |
767 | * Called by ALSA when a PCM substream is closed. Private data can be | |
768 | * freed here. The cpu DAI, codec DAI, machine and platform are also | |
769 | * shutdown. | |
770 | */ | |
771 | static int soc_codec_close(struct snd_pcm_substream *substream) | |
772 | { | |
773 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
774 | struct snd_soc_device *socdev = rtd->socdev; | |
775 | struct snd_soc_machine *machine = socdev->machine; | |
776 | struct snd_soc_platform *platform = socdev->platform; | |
777 | struct snd_soc_codec *codec = socdev->codec; | |
778 | ||
779 | mutex_lock(&pcm_mutex); | |
780 | ||
781 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
782 | rtd->cpu_dai->playback.active = rtd->codec_dai->playback.active = 0; | |
783 | else | |
784 | rtd->cpu_dai->capture.active = rtd->codec_dai->capture.active = 0; | |
785 | ||
786 | if (rtd->codec_dai->playback.active == 0 && | |
787 | rtd->codec_dai->capture.active == 0) { | |
788 | rtd->cpu_dai->active = rtd->codec_dai->active = 0; | |
789 | } | |
790 | codec->active--; | |
791 | ||
792 | if (rtd->cpu_dai->ops.shutdown) | |
793 | rtd->cpu_dai->ops.shutdown(substream); | |
794 | ||
795 | if (rtd->codec_dai->ops.shutdown) | |
796 | rtd->codec_dai->ops.shutdown(substream); | |
797 | ||
798 | if (machine->ops && machine->ops->shutdown) | |
799 | machine->ops->shutdown(substream); | |
800 | ||
801 | if (platform->pcm_ops->close) | |
802 | platform->pcm_ops->close(substream); | |
803 | rtd->cpu_dai->runtime = NULL; | |
804 | ||
805 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
806 | /* start delayed pop wq here for playback streams */ | |
807 | rtd->codec_dai->pop_wait = 1; | |
808 | queue_delayed_work(soc_workq, &soc_stream_work, | |
809 | msecs_to_jiffies(pmdown_time)); | |
810 | } else { | |
811 | /* capture streams can be powered down now */ | |
812 | snd_soc_dapm_stream_event(codec, rtd->codec_dai->capture.stream_name, | |
813 | SND_SOC_DAPM_STREAM_STOP); | |
814 | ||
815 | if (codec->active == 0 && rtd->codec_dai->pop_wait == 0){ | |
816 | if (codec->dapm_event) | |
817 | codec->dapm_event(codec, SNDRV_CTL_POWER_D3hot); | |
818 | } | |
819 | } | |
820 | ||
821 | mutex_unlock(&pcm_mutex); | |
822 | return 0; | |
823 | } | |
824 | ||
825 | /* | |
826 | * Called by ALSA when the PCM substream is prepared, can set format, sample | |
827 | * rate, etc. This function is non atomic and can be called multiple times, | |
828 | * it can refer to the runtime info. | |
829 | */ | |
830 | static int soc_pcm_prepare(struct snd_pcm_substream *substream) | |
831 | { | |
832 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
833 | struct snd_soc_device *socdev = rtd->socdev; | |
834 | struct snd_soc_platform *platform = socdev->platform; | |
835 | struct snd_soc_codec *codec = socdev->codec; | |
836 | int ret = 0; | |
837 | ||
838 | mutex_lock(&pcm_mutex); | |
839 | if (platform->pcm_ops->prepare) { | |
840 | ret = platform->pcm_ops->prepare(substream); | |
a71a468a LG |
841 | if (ret < 0) { |
842 | printk(KERN_ERR "asoc: platform prepare error\n"); | |
db2a4165 | 843 | goto out; |
a71a468a | 844 | } |
db2a4165 FM |
845 | } |
846 | ||
847 | if (rtd->codec_dai->ops.prepare) { | |
848 | ret = rtd->codec_dai->ops.prepare(substream); | |
a71a468a LG |
849 | if (ret < 0) { |
850 | printk(KERN_ERR "asoc: codec DAI prepare error\n"); | |
db2a4165 | 851 | goto out; |
a71a468a | 852 | } |
db2a4165 FM |
853 | } |
854 | ||
855 | if (rtd->cpu_dai->ops.prepare) | |
856 | ret = rtd->cpu_dai->ops.prepare(substream); | |
857 | ||
858 | /* we only want to start a DAPM playback stream if we are not waiting | |
859 | * on an existing one stopping */ | |
860 | if (rtd->codec_dai->pop_wait) { | |
861 | /* we are waiting for the delayed work to start */ | |
862 | if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) | |
863 | snd_soc_dapm_stream_event(codec, | |
864 | rtd->codec_dai->capture.stream_name, | |
865 | SND_SOC_DAPM_STREAM_START); | |
866 | else { | |
867 | rtd->codec_dai->pop_wait = 0; | |
868 | cancel_delayed_work(&soc_stream_work); | |
869 | if (rtd->codec_dai->digital_mute) | |
870 | rtd->codec_dai->digital_mute(codec, rtd->codec_dai, 0); | |
871 | } | |
872 | } else { | |
873 | /* no delayed work - do we need to power up codec */ | |
874 | if (codec->dapm_state != SNDRV_CTL_POWER_D0) { | |
875 | ||
876 | if (codec->dapm_event) | |
877 | codec->dapm_event(codec, SNDRV_CTL_POWER_D1); | |
878 | ||
879 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
880 | snd_soc_dapm_stream_event(codec, | |
881 | rtd->codec_dai->playback.stream_name, | |
882 | SND_SOC_DAPM_STREAM_START); | |
883 | else | |
884 | snd_soc_dapm_stream_event(codec, | |
885 | rtd->codec_dai->capture.stream_name, | |
886 | SND_SOC_DAPM_STREAM_START); | |
887 | ||
888 | if (codec->dapm_event) | |
889 | codec->dapm_event(codec, SNDRV_CTL_POWER_D0); | |
890 | if (rtd->codec_dai->digital_mute) | |
891 | rtd->codec_dai->digital_mute(codec, rtd->codec_dai, 0); | |
892 | ||
893 | } else { | |
894 | /* codec already powered - power on widgets */ | |
895 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
896 | snd_soc_dapm_stream_event(codec, | |
897 | rtd->codec_dai->playback.stream_name, | |
898 | SND_SOC_DAPM_STREAM_START); | |
899 | else | |
900 | snd_soc_dapm_stream_event(codec, | |
901 | rtd->codec_dai->capture.stream_name, | |
902 | SND_SOC_DAPM_STREAM_START); | |
903 | if (rtd->codec_dai->digital_mute) | |
904 | rtd->codec_dai->digital_mute(codec, rtd->codec_dai, 0); | |
905 | } | |
906 | } | |
907 | ||
908 | out: | |
909 | mutex_unlock(&pcm_mutex); | |
910 | return ret; | |
911 | } | |
912 | ||
913 | /* | |
914 | * Called by ALSA when the hardware params are set by application. This | |
915 | * function can also be called multiple times and can allocate buffers | |
916 | * (using snd_pcm_lib_* ). It's non-atomic. | |
917 | */ | |
918 | static int soc_pcm_hw_params(struct snd_pcm_substream *substream, | |
919 | struct snd_pcm_hw_params *params) | |
920 | { | |
921 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
922 | struct snd_soc_device *socdev = rtd->socdev; | |
923 | struct snd_soc_platform *platform = socdev->platform; | |
924 | struct snd_soc_machine *machine = socdev->machine; | |
925 | int ret = 0; | |
926 | ||
927 | mutex_lock(&pcm_mutex); | |
928 | ||
929 | /* we don't need to match any AC97 params */ | |
930 | if (rtd->cpu_dai->type != SND_SOC_DAI_AC97) { | |
931 | ret = soc_hw_match_params(substream, params); | |
932 | if (ret < 0) | |
933 | goto out; | |
934 | } else { | |
935 | struct snd_soc_clock_info clk_info; | |
936 | clk_info.rate = params_rate(params); | |
937 | ret = soc_get_mclk(rtd, &clk_info); | |
938 | if (ret < 0) | |
939 | goto out; | |
940 | } | |
941 | ||
942 | if (rtd->codec_dai->ops.hw_params) { | |
943 | ret = rtd->codec_dai->ops.hw_params(substream, params); | |
944 | if (ret < 0) { | |
945 | printk(KERN_ERR "asoc: can't set codec %s hw params\n", | |
946 | rtd->codec_dai->name); | |
947 | goto out; | |
948 | } | |
949 | } | |
950 | ||
951 | if (rtd->cpu_dai->ops.hw_params) { | |
952 | ret = rtd->cpu_dai->ops.hw_params(substream, params); | |
953 | if (ret < 0) { | |
954 | printk(KERN_ERR "asoc: can't set interface %s hw params\n", | |
955 | rtd->cpu_dai->name); | |
956 | goto interface_err; | |
957 | } | |
958 | } | |
959 | ||
960 | if (platform->pcm_ops->hw_params) { | |
961 | ret = platform->pcm_ops->hw_params(substream, params); | |
962 | if (ret < 0) { | |
963 | printk(KERN_ERR "asoc: can't set platform %s hw params\n", | |
964 | platform->name); | |
965 | goto platform_err; | |
966 | } | |
967 | } | |
968 | ||
969 | if (machine->ops && machine->ops->hw_params) { | |
970 | ret = machine->ops->hw_params(substream, params); | |
971 | if (ret < 0) { | |
972 | printk(KERN_ERR "asoc: machine hw_params failed\n"); | |
973 | goto machine_err; | |
974 | } | |
975 | } | |
976 | ||
977 | out: | |
978 | mutex_unlock(&pcm_mutex); | |
979 | return ret; | |
980 | ||
981 | machine_err: | |
982 | if (platform->pcm_ops->hw_free) | |
983 | platform->pcm_ops->hw_free(substream); | |
984 | ||
985 | platform_err: | |
986 | if (rtd->cpu_dai->ops.hw_free) | |
987 | rtd->cpu_dai->ops.hw_free(substream); | |
988 | ||
989 | interface_err: | |
990 | if (rtd->codec_dai->ops.hw_free) | |
991 | rtd->codec_dai->ops.hw_free(substream); | |
992 | ||
993 | mutex_unlock(&pcm_mutex); | |
994 | return ret; | |
995 | } | |
996 | ||
997 | /* | |
998 | * Free's resources allocated by hw_params, can be called multiple times | |
999 | */ | |
1000 | static int soc_pcm_hw_free(struct snd_pcm_substream *substream) | |
1001 | { | |
1002 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
1003 | struct snd_soc_device *socdev = rtd->socdev; | |
1004 | struct snd_soc_platform *platform = socdev->platform; | |
1005 | struct snd_soc_codec *codec = socdev->codec; | |
1006 | struct snd_soc_machine *machine = socdev->machine; | |
1007 | ||
1008 | mutex_lock(&pcm_mutex); | |
1009 | ||
1010 | /* apply codec digital mute */ | |
1011 | if (!codec->active && rtd->codec_dai->digital_mute) | |
1012 | rtd->codec_dai->digital_mute(codec, rtd->codec_dai, 1); | |
1013 | ||
1014 | /* free any machine hw params */ | |
1015 | if (machine->ops && machine->ops->hw_free) | |
1016 | machine->ops->hw_free(substream); | |
1017 | ||
1018 | /* free any DMA resources */ | |
1019 | if (platform->pcm_ops->hw_free) | |
1020 | platform->pcm_ops->hw_free(substream); | |
1021 | ||
1022 | /* now free hw params for the DAI's */ | |
1023 | if (rtd->codec_dai->ops.hw_free) | |
1024 | rtd->codec_dai->ops.hw_free(substream); | |
1025 | ||
1026 | if (rtd->cpu_dai->ops.hw_free) | |
1027 | rtd->cpu_dai->ops.hw_free(substream); | |
1028 | ||
1029 | mutex_unlock(&pcm_mutex); | |
1030 | return 0; | |
1031 | } | |
1032 | ||
1033 | static int soc_pcm_trigger(struct snd_pcm_substream *substream, int cmd) | |
1034 | { | |
1035 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
1036 | struct snd_soc_device *socdev = rtd->socdev; | |
1037 | struct snd_soc_platform *platform = socdev->platform; | |
1038 | int ret; | |
1039 | ||
1040 | if (rtd->codec_dai->ops.trigger) { | |
1041 | ret = rtd->codec_dai->ops.trigger(substream, cmd); | |
1042 | if (ret < 0) | |
1043 | return ret; | |
1044 | } | |
1045 | ||
1046 | if (platform->pcm_ops->trigger) { | |
1047 | ret = platform->pcm_ops->trigger(substream, cmd); | |
1048 | if (ret < 0) | |
1049 | return ret; | |
1050 | } | |
1051 | ||
1052 | if (rtd->cpu_dai->ops.trigger) { | |
1053 | ret = rtd->cpu_dai->ops.trigger(substream, cmd); | |
1054 | if (ret < 0) | |
1055 | return ret; | |
1056 | } | |
1057 | return 0; | |
1058 | } | |
1059 | ||
1060 | /* ASoC PCM operations */ | |
1061 | static struct snd_pcm_ops soc_pcm_ops = { | |
1062 | .open = soc_pcm_open, | |
1063 | .close = soc_codec_close, | |
1064 | .hw_params = soc_pcm_hw_params, | |
1065 | .hw_free = soc_pcm_hw_free, | |
1066 | .prepare = soc_pcm_prepare, | |
1067 | .trigger = soc_pcm_trigger, | |
1068 | }; | |
1069 | ||
1070 | #ifdef CONFIG_PM | |
1071 | /* powers down audio subsystem for suspend */ | |
1072 | static int soc_suspend(struct platform_device *pdev, pm_message_t state) | |
1073 | { | |
1074 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
1075 | struct snd_soc_machine *machine = socdev->machine; | |
1076 | struct snd_soc_platform *platform = socdev->platform; | |
1077 | struct snd_soc_codec_device *codec_dev = socdev->codec_dev; | |
1078 | struct snd_soc_codec *codec = socdev->codec; | |
1079 | int i; | |
1080 | ||
1081 | /* mute any active DAC's */ | |
1082 | for(i = 0; i < machine->num_links; i++) { | |
1083 | struct snd_soc_codec_dai *dai = machine->dai_link[i].codec_dai; | |
1084 | if (dai->digital_mute && dai->playback.active) | |
1085 | dai->digital_mute(codec, dai, 1); | |
1086 | } | |
1087 | ||
1088 | if (machine->suspend_pre) | |
1089 | machine->suspend_pre(pdev, state); | |
1090 | ||
1091 | for(i = 0; i < machine->num_links; i++) { | |
1092 | struct snd_soc_cpu_dai *cpu_dai = machine->dai_link[i].cpu_dai; | |
1093 | if (cpu_dai->suspend && cpu_dai->type != SND_SOC_DAI_AC97) | |
1094 | cpu_dai->suspend(pdev, cpu_dai); | |
1095 | if (platform->suspend) | |
1096 | platform->suspend(pdev, cpu_dai); | |
1097 | } | |
1098 | ||
1099 | /* close any waiting streams and save state */ | |
1100 | flush_workqueue(soc_workq); | |
1101 | codec->suspend_dapm_state = codec->dapm_state; | |
1102 | ||
1103 | for(i = 0; i < codec->num_dai; i++) { | |
1104 | char *stream = codec->dai[i].playback.stream_name; | |
1105 | if (stream != NULL) | |
1106 | snd_soc_dapm_stream_event(codec, stream, | |
1107 | SND_SOC_DAPM_STREAM_SUSPEND); | |
1108 | stream = codec->dai[i].capture.stream_name; | |
1109 | if (stream != NULL) | |
1110 | snd_soc_dapm_stream_event(codec, stream, | |
1111 | SND_SOC_DAPM_STREAM_SUSPEND); | |
1112 | } | |
1113 | ||
1114 | if (codec_dev->suspend) | |
1115 | codec_dev->suspend(pdev, state); | |
1116 | ||
1117 | for(i = 0; i < machine->num_links; i++) { | |
1118 | struct snd_soc_cpu_dai *cpu_dai = machine->dai_link[i].cpu_dai; | |
1119 | if (cpu_dai->suspend && cpu_dai->type == SND_SOC_DAI_AC97) | |
1120 | cpu_dai->suspend(pdev, cpu_dai); | |
1121 | } | |
1122 | ||
1123 | if (machine->suspend_post) | |
1124 | machine->suspend_post(pdev, state); | |
1125 | ||
1126 | return 0; | |
1127 | } | |
1128 | ||
1129 | /* powers up audio subsystem after a suspend */ | |
1130 | static int soc_resume(struct platform_device *pdev) | |
1131 | { | |
1132 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
1133 | struct snd_soc_machine *machine = socdev->machine; | |
1134 | struct snd_soc_platform *platform = socdev->platform; | |
1135 | struct snd_soc_codec_device *codec_dev = socdev->codec_dev; | |
1136 | struct snd_soc_codec *codec = socdev->codec; | |
1137 | int i; | |
1138 | ||
1139 | if (machine->resume_pre) | |
1140 | machine->resume_pre(pdev); | |
1141 | ||
1142 | for(i = 0; i < machine->num_links; i++) { | |
1143 | struct snd_soc_cpu_dai *cpu_dai = machine->dai_link[i].cpu_dai; | |
1144 | if (cpu_dai->resume && cpu_dai->type == SND_SOC_DAI_AC97) | |
1145 | cpu_dai->resume(pdev, cpu_dai); | |
1146 | } | |
1147 | ||
1148 | if (codec_dev->resume) | |
1149 | codec_dev->resume(pdev); | |
1150 | ||
1151 | for(i = 0; i < codec->num_dai; i++) { | |
1152 | char* stream = codec->dai[i].playback.stream_name; | |
1153 | if (stream != NULL) | |
1154 | snd_soc_dapm_stream_event(codec, stream, | |
1155 | SND_SOC_DAPM_STREAM_RESUME); | |
1156 | stream = codec->dai[i].capture.stream_name; | |
1157 | if (stream != NULL) | |
1158 | snd_soc_dapm_stream_event(codec, stream, | |
1159 | SND_SOC_DAPM_STREAM_RESUME); | |
1160 | } | |
1161 | ||
1162 | /* unmute any active DAC's */ | |
1163 | for(i = 0; i < machine->num_links; i++) { | |
1164 | struct snd_soc_codec_dai *dai = machine->dai_link[i].codec_dai; | |
1165 | if (dai->digital_mute && dai->playback.active) | |
1166 | dai->digital_mute(codec, dai, 0); | |
1167 | } | |
1168 | ||
1169 | for(i = 0; i < machine->num_links; i++) { | |
1170 | struct snd_soc_cpu_dai *cpu_dai = machine->dai_link[i].cpu_dai; | |
1171 | if (cpu_dai->resume && cpu_dai->type != SND_SOC_DAI_AC97) | |
1172 | cpu_dai->resume(pdev, cpu_dai); | |
1173 | if (platform->resume) | |
1174 | platform->resume(pdev, cpu_dai); | |
1175 | } | |
1176 | ||
1177 | if (machine->resume_post) | |
1178 | machine->resume_post(pdev); | |
1179 | ||
1180 | return 0; | |
1181 | } | |
1182 | ||
1183 | #else | |
1184 | #define soc_suspend NULL | |
1185 | #define soc_resume NULL | |
1186 | #endif | |
1187 | ||
1188 | /* probes a new socdev */ | |
1189 | static int soc_probe(struct platform_device *pdev) | |
1190 | { | |
1191 | int ret = 0, i; | |
1192 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
1193 | struct snd_soc_machine *machine = socdev->machine; | |
1194 | struct snd_soc_platform *platform = socdev->platform; | |
1195 | struct snd_soc_codec_device *codec_dev = socdev->codec_dev; | |
1196 | ||
1197 | if (machine->probe) { | |
1198 | ret = machine->probe(pdev); | |
1199 | if(ret < 0) | |
1200 | return ret; | |
1201 | } | |
1202 | ||
1203 | for (i = 0; i < machine->num_links; i++) { | |
1204 | struct snd_soc_cpu_dai *cpu_dai = machine->dai_link[i].cpu_dai; | |
1205 | if (cpu_dai->probe) { | |
1206 | ret = cpu_dai->probe(pdev); | |
1207 | if(ret < 0) | |
1208 | goto cpu_dai_err; | |
1209 | } | |
1210 | } | |
1211 | ||
1212 | if (codec_dev->probe) { | |
1213 | ret = codec_dev->probe(pdev); | |
1214 | if(ret < 0) | |
1215 | goto cpu_dai_err; | |
1216 | } | |
1217 | ||
1218 | if (platform->probe) { | |
1219 | ret = platform->probe(pdev); | |
1220 | if(ret < 0) | |
1221 | goto platform_err; | |
1222 | } | |
1223 | ||
1224 | /* DAPM stream work */ | |
1225 | soc_workq = create_workqueue("kdapm"); | |
1226 | if (soc_workq == NULL) | |
1227 | goto work_err; | |
1228 | INIT_WORK(&soc_stream_work, close_delayed_work, socdev); | |
1229 | return 0; | |
1230 | ||
1231 | work_err: | |
1232 | if (platform->remove) | |
1233 | platform->remove(pdev); | |
1234 | ||
1235 | platform_err: | |
1236 | if (codec_dev->remove) | |
1237 | codec_dev->remove(pdev); | |
1238 | ||
1239 | cpu_dai_err: | |
1240 | for (i--; i > 0; i--) { | |
1241 | struct snd_soc_cpu_dai *cpu_dai = machine->dai_link[i].cpu_dai; | |
1242 | if (cpu_dai->remove) | |
1243 | cpu_dai->remove(pdev); | |
1244 | } | |
1245 | ||
1246 | if (machine->remove) | |
1247 | machine->remove(pdev); | |
1248 | ||
1249 | return ret; | |
1250 | } | |
1251 | ||
1252 | /* removes a socdev */ | |
1253 | static int soc_remove(struct platform_device *pdev) | |
1254 | { | |
1255 | int i; | |
1256 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
1257 | struct snd_soc_machine *machine = socdev->machine; | |
1258 | struct snd_soc_platform *platform = socdev->platform; | |
1259 | struct snd_soc_codec_device *codec_dev = socdev->codec_dev; | |
1260 | ||
1261 | if (soc_workq) | |
1262 | destroy_workqueue(soc_workq); | |
1263 | ||
1264 | if (platform->remove) | |
1265 | platform->remove(pdev); | |
1266 | ||
1267 | if (codec_dev->remove) | |
1268 | codec_dev->remove(pdev); | |
1269 | ||
1270 | for (i = 0; i < machine->num_links; i++) { | |
1271 | struct snd_soc_cpu_dai *cpu_dai = machine->dai_link[i].cpu_dai; | |
1272 | if (cpu_dai->remove) | |
1273 | cpu_dai->remove(pdev); | |
1274 | } | |
1275 | ||
1276 | if (machine->remove) | |
1277 | machine->remove(pdev); | |
1278 | ||
1279 | return 0; | |
1280 | } | |
1281 | ||
1282 | /* ASoC platform driver */ | |
1283 | static struct platform_driver soc_driver = { | |
1284 | .driver = { | |
1285 | .name = "soc-audio", | |
1286 | }, | |
1287 | .probe = soc_probe, | |
1288 | .remove = soc_remove, | |
1289 | .suspend = soc_suspend, | |
1290 | .resume = soc_resume, | |
1291 | }; | |
1292 | ||
1293 | /* create a new pcm */ | |
1294 | static int soc_new_pcm(struct snd_soc_device *socdev, | |
1295 | struct snd_soc_dai_link *dai_link, int num) | |
1296 | { | |
1297 | struct snd_soc_codec *codec = socdev->codec; | |
1298 | struct snd_soc_codec_dai *codec_dai = dai_link->codec_dai; | |
1299 | struct snd_soc_cpu_dai *cpu_dai = dai_link->cpu_dai; | |
1300 | struct snd_soc_pcm_runtime *rtd; | |
1301 | struct snd_pcm *pcm; | |
1302 | char new_name[64]; | |
1303 | int ret = 0, playback = 0, capture = 0; | |
1304 | ||
1305 | rtd = kzalloc(sizeof(struct snd_soc_pcm_runtime), GFP_KERNEL); | |
1306 | if (rtd == NULL) | |
1307 | return -ENOMEM; | |
1308 | rtd->cpu_dai = cpu_dai; | |
1309 | rtd->codec_dai = codec_dai; | |
1310 | rtd->socdev = socdev; | |
1311 | ||
1312 | /* check client and interface hw capabilities */ | |
1313 | sprintf(new_name, "%s %s-%s-%d",dai_link->stream_name, codec_dai->name, | |
1314 | get_dai_name(cpu_dai->type), num); | |
1315 | ||
1316 | if (codec_dai->playback.channels_min) | |
1317 | playback = 1; | |
1318 | if (codec_dai->capture.channels_min) | |
1319 | capture = 1; | |
1320 | ||
1321 | ret = snd_pcm_new(codec->card, new_name, codec->pcm_devs++, playback, | |
1322 | capture, &pcm); | |
1323 | if (ret < 0) { | |
1324 | printk(KERN_ERR "asoc: can't create pcm for codec %s\n", codec->name); | |
1325 | kfree(rtd); | |
1326 | return ret; | |
1327 | } | |
1328 | ||
1329 | pcm->private_data = rtd; | |
1330 | soc_pcm_ops.mmap = socdev->platform->pcm_ops->mmap; | |
1331 | soc_pcm_ops.pointer = socdev->platform->pcm_ops->pointer; | |
1332 | soc_pcm_ops.ioctl = socdev->platform->pcm_ops->ioctl; | |
1333 | soc_pcm_ops.copy = socdev->platform->pcm_ops->copy; | |
1334 | soc_pcm_ops.silence = socdev->platform->pcm_ops->silence; | |
1335 | soc_pcm_ops.ack = socdev->platform->pcm_ops->ack; | |
1336 | soc_pcm_ops.page = socdev->platform->pcm_ops->page; | |
1337 | ||
1338 | if (playback) | |
1339 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &soc_pcm_ops); | |
1340 | ||
1341 | if (capture) | |
1342 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &soc_pcm_ops); | |
1343 | ||
1344 | ret = socdev->platform->pcm_new(codec->card, codec_dai, pcm); | |
1345 | if (ret < 0) { | |
1346 | printk(KERN_ERR "asoc: platform pcm constructor failed\n"); | |
1347 | kfree(rtd); | |
1348 | return ret; | |
1349 | } | |
1350 | ||
1351 | pcm->private_free = socdev->platform->pcm_free; | |
1352 | printk(KERN_INFO "asoc: %s <-> %s mapping ok\n", codec_dai->name, | |
1353 | cpu_dai->name); | |
1354 | return ret; | |
1355 | } | |
1356 | ||
1357 | /* codec register dump */ | |
1358 | static ssize_t codec_reg_show(struct device *dev, | |
1359 | struct device_attribute *attr, char *buf) | |
1360 | { | |
1361 | struct snd_soc_device *devdata = dev_get_drvdata(dev); | |
1362 | struct snd_soc_codec *codec = devdata->codec; | |
1363 | int i, step = 1, count = 0; | |
1364 | ||
1365 | if (!codec->reg_cache_size) | |
1366 | return 0; | |
1367 | ||
1368 | if (codec->reg_cache_step) | |
1369 | step = codec->reg_cache_step; | |
1370 | ||
1371 | count += sprintf(buf, "%s registers\n", codec->name); | |
1372 | for(i = 0; i < codec->reg_cache_size; i += step) | |
1373 | count += sprintf(buf + count, "%2x: %4x\n", i, codec->read(codec, i)); | |
1374 | ||
1375 | return count; | |
1376 | } | |
1377 | static DEVICE_ATTR(codec_reg, 0444, codec_reg_show, NULL); | |
1378 | ||
1379 | /** | |
1380 | * snd_soc_new_ac97_codec - initailise AC97 device | |
1381 | * @codec: audio codec | |
1382 | * @ops: AC97 bus operations | |
1383 | * @num: AC97 codec number | |
1384 | * | |
1385 | * Initialises AC97 codec resources for use by ad-hoc devices only. | |
1386 | */ | |
1387 | int snd_soc_new_ac97_codec(struct snd_soc_codec *codec, | |
1388 | struct snd_ac97_bus_ops *ops, int num) | |
1389 | { | |
1390 | mutex_lock(&codec->mutex); | |
1391 | ||
1392 | codec->ac97 = kzalloc(sizeof(struct snd_ac97), GFP_KERNEL); | |
1393 | if (codec->ac97 == NULL) { | |
1394 | mutex_unlock(&codec->mutex); | |
1395 | return -ENOMEM; | |
1396 | } | |
1397 | ||
1398 | codec->ac97->bus = kzalloc(sizeof(struct snd_ac97_bus), GFP_KERNEL); | |
1399 | if (codec->ac97->bus == NULL) { | |
1400 | kfree(codec->ac97); | |
1401 | codec->ac97 = NULL; | |
1402 | mutex_unlock(&codec->mutex); | |
1403 | return -ENOMEM; | |
1404 | } | |
1405 | ||
1406 | codec->ac97->bus->ops = ops; | |
1407 | codec->ac97->num = num; | |
1408 | mutex_unlock(&codec->mutex); | |
1409 | return 0; | |
1410 | } | |
1411 | EXPORT_SYMBOL_GPL(snd_soc_new_ac97_codec); | |
1412 | ||
1413 | /** | |
1414 | * snd_soc_free_ac97_codec - free AC97 codec device | |
1415 | * @codec: audio codec | |
1416 | * | |
1417 | * Frees AC97 codec device resources. | |
1418 | */ | |
1419 | void snd_soc_free_ac97_codec(struct snd_soc_codec *codec) | |
1420 | { | |
1421 | mutex_lock(&codec->mutex); | |
1422 | kfree(codec->ac97->bus); | |
1423 | kfree(codec->ac97); | |
1424 | codec->ac97 = NULL; | |
1425 | mutex_unlock(&codec->mutex); | |
1426 | } | |
1427 | EXPORT_SYMBOL_GPL(snd_soc_free_ac97_codec); | |
1428 | ||
1429 | /** | |
1430 | * snd_soc_update_bits - update codec register bits | |
1431 | * @codec: audio codec | |
1432 | * @reg: codec register | |
1433 | * @mask: register mask | |
1434 | * @value: new value | |
1435 | * | |
1436 | * Writes new register value. | |
1437 | * | |
1438 | * Returns 1 for change else 0. | |
1439 | */ | |
1440 | int snd_soc_update_bits(struct snd_soc_codec *codec, unsigned short reg, | |
1441 | unsigned short mask, unsigned short value) | |
1442 | { | |
1443 | int change; | |
1444 | unsigned short old, new; | |
1445 | ||
1446 | mutex_lock(&io_mutex); | |
1447 | old = snd_soc_read(codec, reg); | |
1448 | new = (old & ~mask) | value; | |
1449 | change = old != new; | |
1450 | if (change) | |
1451 | snd_soc_write(codec, reg, new); | |
1452 | ||
1453 | mutex_unlock(&io_mutex); | |
1454 | return change; | |
1455 | } | |
1456 | EXPORT_SYMBOL_GPL(snd_soc_update_bits); | |
1457 | ||
1458 | /** | |
1459 | * snd_soc_test_bits - test register for change | |
1460 | * @codec: audio codec | |
1461 | * @reg: codec register | |
1462 | * @mask: register mask | |
1463 | * @value: new value | |
1464 | * | |
1465 | * Tests a register with a new value and checks if the new value is | |
1466 | * different from the old value. | |
1467 | * | |
1468 | * Returns 1 for change else 0. | |
1469 | */ | |
1470 | int snd_soc_test_bits(struct snd_soc_codec *codec, unsigned short reg, | |
1471 | unsigned short mask, unsigned short value) | |
1472 | { | |
1473 | int change; | |
1474 | unsigned short old, new; | |
1475 | ||
1476 | mutex_lock(&io_mutex); | |
1477 | old = snd_soc_read(codec, reg); | |
1478 | new = (old & ~mask) | value; | |
1479 | change = old != new; | |
1480 | mutex_unlock(&io_mutex); | |
1481 | ||
1482 | return change; | |
1483 | } | |
1484 | EXPORT_SYMBOL_GPL(snd_soc_test_bits); | |
1485 | ||
1486 | /** | |
1487 | * snd_soc_get_rate - get int sample rate | |
1488 | * @hwpcmrate: the hardware pcm rate | |
1489 | * | |
1490 | * Returns the audio rate integaer value, else 0. | |
1491 | */ | |
1492 | int snd_soc_get_rate(int hwpcmrate) | |
1493 | { | |
1494 | int rate = ffs(hwpcmrate) - 1; | |
1495 | ||
1496 | if (rate > ARRAY_SIZE(rates)) | |
1497 | return 0; | |
1498 | return rates[rate]; | |
1499 | } | |
1500 | EXPORT_SYMBOL_GPL(snd_soc_get_rate); | |
1501 | ||
1502 | /** | |
1503 | * snd_soc_new_pcms - create new sound card and pcms | |
1504 | * @socdev: the SoC audio device | |
1505 | * | |
1506 | * Create a new sound card based upon the codec and interface pcms. | |
1507 | * | |
1508 | * Returns 0 for success, else error. | |
1509 | */ | |
1510 | int snd_soc_new_pcms(struct snd_soc_device *socdev, int idx, const char * xid) | |
1511 | { | |
1512 | struct snd_soc_codec *codec = socdev->codec; | |
1513 | struct snd_soc_machine *machine = socdev->machine; | |
1514 | int ret = 0, i; | |
1515 | ||
1516 | mutex_lock(&codec->mutex); | |
1517 | ||
1518 | /* register a sound card */ | |
1519 | codec->card = snd_card_new(idx, xid, codec->owner, 0); | |
1520 | if (!codec->card) { | |
1521 | printk(KERN_ERR "asoc: can't create sound card for codec %s\n", | |
1522 | codec->name); | |
1523 | mutex_unlock(&codec->mutex); | |
1524 | return -ENODEV; | |
1525 | } | |
1526 | ||
1527 | codec->card->dev = socdev->dev; | |
1528 | codec->card->private_data = codec; | |
1529 | strncpy(codec->card->driver, codec->name, sizeof(codec->card->driver)); | |
1530 | ||
1531 | /* create the pcms */ | |
1532 | for(i = 0; i < machine->num_links; i++) { | |
1533 | ret = soc_new_pcm(socdev, &machine->dai_link[i], i); | |
1534 | if (ret < 0) { | |
1535 | printk(KERN_ERR "asoc: can't create pcm %s\n", | |
1536 | machine->dai_link[i].stream_name); | |
1537 | mutex_unlock(&codec->mutex); | |
1538 | return ret; | |
1539 | } | |
1540 | } | |
1541 | ||
1542 | mutex_unlock(&codec->mutex); | |
1543 | return ret; | |
1544 | } | |
1545 | EXPORT_SYMBOL_GPL(snd_soc_new_pcms); | |
1546 | ||
1547 | /** | |
1548 | * snd_soc_register_card - register sound card | |
1549 | * @socdev: the SoC audio device | |
1550 | * | |
1551 | * Register a SoC sound card. Also registers an AC97 device if the | |
1552 | * codec is AC97 for ad hoc devices. | |
1553 | * | |
1554 | * Returns 0 for success, else error. | |
1555 | */ | |
1556 | int snd_soc_register_card(struct snd_soc_device *socdev) | |
1557 | { | |
1558 | struct snd_soc_codec *codec = socdev->codec; | |
1559 | struct snd_soc_machine *machine = socdev->machine; | |
12e74f7d | 1560 | int ret = 0, i, ac97 = 0, err = 0; |
db2a4165 FM |
1561 | |
1562 | mutex_lock(&codec->mutex); | |
1563 | for(i = 0; i < machine->num_links; i++) { | |
12e74f7d LG |
1564 | if (socdev->machine->dai_link[i].init) { |
1565 | err = socdev->machine->dai_link[i].init(codec); | |
1566 | if (err < 0) { | |
1567 | printk(KERN_ERR "asoc: failed to init %s\n", | |
1568 | socdev->machine->dai_link[i].stream_name); | |
1569 | continue; | |
1570 | } | |
1571 | } | |
db2a4165 FM |
1572 | if (socdev->machine->dai_link[i].cpu_dai->type == SND_SOC_DAI_AC97) |
1573 | ac97 = 1; | |
1574 | } | |
1575 | snprintf(codec->card->shortname, sizeof(codec->card->shortname), | |
1576 | "%s", machine->name); | |
1577 | snprintf(codec->card->longname, sizeof(codec->card->longname), | |
1578 | "%s (%s)", machine->name, codec->name); | |
1579 | ||
1580 | ret = snd_card_register(codec->card); | |
1581 | if (ret < 0) { | |
1582 | printk(KERN_ERR "asoc: failed to register soundcard for codec %s\n", | |
1583 | codec->name); | |
12e74f7d | 1584 | goto out; |
db2a4165 FM |
1585 | } |
1586 | ||
1587 | #ifdef CONFIG_SND_SOC_AC97_BUS | |
12e74f7d LG |
1588 | if (ac97) { |
1589 | ret = soc_ac97_dev_register(codec); | |
1590 | if (ret < 0) { | |
1591 | printk(KERN_ERR "asoc: AC97 device register failed\n"); | |
1592 | snd_card_free(codec->card); | |
1593 | goto out; | |
1594 | } | |
1595 | } | |
db2a4165 FM |
1596 | #endif |
1597 | ||
12e74f7d LG |
1598 | err = snd_soc_dapm_sys_add(socdev->dev); |
1599 | if (err < 0) | |
1600 | printk(KERN_WARNING "asoc: failed to add dapm sysfs entries\n"); | |
1601 | ||
1602 | err = device_create_file(socdev->dev, &dev_attr_codec_reg); | |
1603 | if (err < 0) | |
1604 | printk(KERN_WARNING "asoc: failed to add codec sysfs entries\n"); | |
1605 | out: | |
db2a4165 FM |
1606 | mutex_unlock(&codec->mutex); |
1607 | return ret; | |
1608 | } | |
1609 | EXPORT_SYMBOL_GPL(snd_soc_register_card); | |
1610 | ||
1611 | /** | |
1612 | * snd_soc_free_pcms - free sound card and pcms | |
1613 | * @socdev: the SoC audio device | |
1614 | * | |
1615 | * Frees sound card and pcms associated with the socdev. | |
1616 | * Also unregister the codec if it is an AC97 device. | |
1617 | */ | |
1618 | void snd_soc_free_pcms(struct snd_soc_device *socdev) | |
1619 | { | |
1620 | struct snd_soc_codec *codec = socdev->codec; | |
1621 | ||
1622 | mutex_lock(&codec->mutex); | |
1623 | #ifdef CONFIG_SND_SOC_AC97_BUS | |
1624 | if (codec->ac97) | |
1625 | soc_ac97_dev_unregister(codec); | |
1626 | #endif | |
1627 | ||
1628 | if (codec->card) | |
1629 | snd_card_free(codec->card); | |
1630 | device_remove_file(socdev->dev, &dev_attr_codec_reg); | |
1631 | mutex_unlock(&codec->mutex); | |
1632 | } | |
1633 | EXPORT_SYMBOL_GPL(snd_soc_free_pcms); | |
1634 | ||
1635 | /** | |
1636 | * snd_soc_set_runtime_hwparams - set the runtime hardware parameters | |
1637 | * @substream: the pcm substream | |
1638 | * @hw: the hardware parameters | |
1639 | * | |
1640 | * Sets the substream runtime hardware parameters. | |
1641 | */ | |
1642 | int snd_soc_set_runtime_hwparams(struct snd_pcm_substream *substream, | |
1643 | const struct snd_pcm_hardware *hw) | |
1644 | { | |
1645 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1646 | runtime->hw.info = hw->info; | |
1647 | runtime->hw.formats = hw->formats; | |
1648 | runtime->hw.period_bytes_min = hw->period_bytes_min; | |
1649 | runtime->hw.period_bytes_max = hw->period_bytes_max; | |
1650 | runtime->hw.periods_min = hw->periods_min; | |
1651 | runtime->hw.periods_max = hw->periods_max; | |
1652 | runtime->hw.buffer_bytes_max = hw->buffer_bytes_max; | |
1653 | runtime->hw.fifo_size = hw->fifo_size; | |
1654 | return 0; | |
1655 | } | |
1656 | EXPORT_SYMBOL_GPL(snd_soc_set_runtime_hwparams); | |
1657 | ||
1658 | /** | |
1659 | * snd_soc_cnew - create new control | |
1660 | * @_template: control template | |
1661 | * @data: control private data | |
1662 | * @lnng_name: control long name | |
1663 | * | |
1664 | * Create a new mixer control from a template control. | |
1665 | * | |
1666 | * Returns 0 for success, else error. | |
1667 | */ | |
1668 | struct snd_kcontrol *snd_soc_cnew(const struct snd_kcontrol_new *_template, | |
1669 | void *data, char *long_name) | |
1670 | { | |
1671 | struct snd_kcontrol_new template; | |
1672 | ||
1673 | memcpy(&template, _template, sizeof(template)); | |
1674 | if (long_name) | |
1675 | template.name = long_name; | |
1676 | template.access = SNDRV_CTL_ELEM_ACCESS_READWRITE; | |
1677 | template.index = 0; | |
1678 | ||
1679 | return snd_ctl_new1(&template, data); | |
1680 | } | |
1681 | EXPORT_SYMBOL_GPL(snd_soc_cnew); | |
1682 | ||
1683 | /** | |
1684 | * snd_soc_info_enum_double - enumerated double mixer info callback | |
1685 | * @kcontrol: mixer control | |
1686 | * @uinfo: control element information | |
1687 | * | |
1688 | * Callback to provide information about a double enumerated | |
1689 | * mixer control. | |
1690 | * | |
1691 | * Returns 0 for success. | |
1692 | */ | |
1693 | int snd_soc_info_enum_double(struct snd_kcontrol *kcontrol, | |
1694 | struct snd_ctl_elem_info *uinfo) | |
1695 | { | |
1696 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
1697 | ||
1698 | uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED; | |
1699 | uinfo->count = e->shift_l == e->shift_r ? 1 : 2; | |
1700 | uinfo->value.enumerated.items = e->mask; | |
1701 | ||
1702 | if (uinfo->value.enumerated.item > e->mask - 1) | |
1703 | uinfo->value.enumerated.item = e->mask - 1; | |
1704 | strcpy(uinfo->value.enumerated.name, | |
1705 | e->texts[uinfo->value.enumerated.item]); | |
1706 | return 0; | |
1707 | } | |
1708 | EXPORT_SYMBOL_GPL(snd_soc_info_enum_double); | |
1709 | ||
1710 | /** | |
1711 | * snd_soc_get_enum_double - enumerated double mixer get callback | |
1712 | * @kcontrol: mixer control | |
1713 | * @uinfo: control element information | |
1714 | * | |
1715 | * Callback to get the value of a double enumerated mixer. | |
1716 | * | |
1717 | * Returns 0 for success. | |
1718 | */ | |
1719 | int snd_soc_get_enum_double(struct snd_kcontrol *kcontrol, | |
1720 | struct snd_ctl_elem_value *ucontrol) | |
1721 | { | |
1722 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
1723 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
1724 | unsigned short val, bitmask; | |
1725 | ||
1726 | for (bitmask = 1; bitmask < e->mask; bitmask <<= 1) | |
1727 | ; | |
1728 | val = snd_soc_read(codec, e->reg); | |
1729 | ucontrol->value.enumerated.item[0] = (val >> e->shift_l) & (bitmask - 1); | |
1730 | if (e->shift_l != e->shift_r) | |
1731 | ucontrol->value.enumerated.item[1] = | |
1732 | (val >> e->shift_r) & (bitmask - 1); | |
1733 | ||
1734 | return 0; | |
1735 | } | |
1736 | EXPORT_SYMBOL_GPL(snd_soc_get_enum_double); | |
1737 | ||
1738 | /** | |
1739 | * snd_soc_put_enum_double - enumerated double mixer put callback | |
1740 | * @kcontrol: mixer control | |
1741 | * @uinfo: control element information | |
1742 | * | |
1743 | * Callback to set the value of a double enumerated mixer. | |
1744 | * | |
1745 | * Returns 0 for success. | |
1746 | */ | |
1747 | int snd_soc_put_enum_double(struct snd_kcontrol *kcontrol, | |
1748 | struct snd_ctl_elem_value *ucontrol) | |
1749 | { | |
1750 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
1751 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
1752 | unsigned short val; | |
1753 | unsigned short mask, bitmask; | |
1754 | ||
1755 | for (bitmask = 1; bitmask < e->mask; bitmask <<= 1) | |
1756 | ; | |
1757 | if (ucontrol->value.enumerated.item[0] > e->mask - 1) | |
1758 | return -EINVAL; | |
1759 | val = ucontrol->value.enumerated.item[0] << e->shift_l; | |
1760 | mask = (bitmask - 1) << e->shift_l; | |
1761 | if (e->shift_l != e->shift_r) { | |
1762 | if (ucontrol->value.enumerated.item[1] > e->mask - 1) | |
1763 | return -EINVAL; | |
1764 | val |= ucontrol->value.enumerated.item[1] << e->shift_r; | |
1765 | mask |= (bitmask - 1) << e->shift_r; | |
1766 | } | |
1767 | ||
1768 | return snd_soc_update_bits(codec, e->reg, mask, val); | |
1769 | } | |
1770 | EXPORT_SYMBOL_GPL(snd_soc_put_enum_double); | |
1771 | ||
1772 | /** | |
1773 | * snd_soc_info_enum_ext - external enumerated single mixer info callback | |
1774 | * @kcontrol: mixer control | |
1775 | * @uinfo: control element information | |
1776 | * | |
1777 | * Callback to provide information about an external enumerated | |
1778 | * single mixer. | |
1779 | * | |
1780 | * Returns 0 for success. | |
1781 | */ | |
1782 | int snd_soc_info_enum_ext(struct snd_kcontrol *kcontrol, | |
1783 | struct snd_ctl_elem_info *uinfo) | |
1784 | { | |
1785 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
1786 | ||
1787 | uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED; | |
1788 | uinfo->count = 1; | |
1789 | uinfo->value.enumerated.items = e->mask; | |
1790 | ||
1791 | if (uinfo->value.enumerated.item > e->mask - 1) | |
1792 | uinfo->value.enumerated.item = e->mask - 1; | |
1793 | strcpy(uinfo->value.enumerated.name, | |
1794 | e->texts[uinfo->value.enumerated.item]); | |
1795 | return 0; | |
1796 | } | |
1797 | EXPORT_SYMBOL_GPL(snd_soc_info_enum_ext); | |
1798 | ||
1799 | /** | |
1800 | * snd_soc_info_volsw_ext - external single mixer info callback | |
1801 | * @kcontrol: mixer control | |
1802 | * @uinfo: control element information | |
1803 | * | |
1804 | * Callback to provide information about a single external mixer control. | |
1805 | * | |
1806 | * Returns 0 for success. | |
1807 | */ | |
1808 | int snd_soc_info_volsw_ext(struct snd_kcontrol *kcontrol, | |
1809 | struct snd_ctl_elem_info *uinfo) | |
1810 | { | |
1811 | int mask = kcontrol->private_value; | |
1812 | ||
1813 | uinfo->type = | |
1814 | mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER; | |
1815 | uinfo->count = 1; | |
1816 | uinfo->value.integer.min = 0; | |
1817 | uinfo->value.integer.max = mask; | |
1818 | return 0; | |
1819 | } | |
1820 | EXPORT_SYMBOL_GPL(snd_soc_info_volsw_ext); | |
1821 | ||
1822 | /** | |
1823 | * snd_soc_info_bool_ext - external single boolean mixer info callback | |
1824 | * @kcontrol: mixer control | |
1825 | * @uinfo: control element information | |
1826 | * | |
1827 | * Callback to provide information about a single boolean external mixer control. | |
1828 | * | |
1829 | * Returns 0 for success. | |
1830 | */ | |
1831 | int snd_soc_info_bool_ext(struct snd_kcontrol *kcontrol, | |
1832 | struct snd_ctl_elem_info *uinfo) | |
1833 | { | |
1834 | uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; | |
1835 | uinfo->count = 1; | |
1836 | uinfo->value.integer.min = 0; | |
1837 | uinfo->value.integer.max = 1; | |
1838 | return 0; | |
1839 | } | |
1840 | EXPORT_SYMBOL_GPL(snd_soc_info_bool_ext); | |
1841 | ||
1842 | /** | |
1843 | * snd_soc_info_volsw - single mixer info callback | |
1844 | * @kcontrol: mixer control | |
1845 | * @uinfo: control element information | |
1846 | * | |
1847 | * Callback to provide information about a single mixer control. | |
1848 | * | |
1849 | * Returns 0 for success. | |
1850 | */ | |
1851 | int snd_soc_info_volsw(struct snd_kcontrol *kcontrol, | |
1852 | struct snd_ctl_elem_info *uinfo) | |
1853 | { | |
1854 | int mask = (kcontrol->private_value >> 16) & 0xff; | |
1855 | int shift = (kcontrol->private_value >> 8) & 0x0f; | |
1856 | int rshift = (kcontrol->private_value >> 12) & 0x0f; | |
1857 | ||
1858 | uinfo->type = | |
1859 | mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER; | |
1860 | uinfo->count = shift == rshift ? 1 : 2; | |
1861 | uinfo->value.integer.min = 0; | |
1862 | uinfo->value.integer.max = mask; | |
1863 | return 0; | |
1864 | } | |
1865 | EXPORT_SYMBOL_GPL(snd_soc_info_volsw); | |
1866 | ||
1867 | /** | |
1868 | * snd_soc_get_volsw - single mixer get callback | |
1869 | * @kcontrol: mixer control | |
1870 | * @uinfo: control element information | |
1871 | * | |
1872 | * Callback to get the value of a single mixer control. | |
1873 | * | |
1874 | * Returns 0 for success. | |
1875 | */ | |
1876 | int snd_soc_get_volsw(struct snd_kcontrol *kcontrol, | |
1877 | struct snd_ctl_elem_value *ucontrol) | |
1878 | { | |
1879 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
1880 | int reg = kcontrol->private_value & 0xff; | |
1881 | int shift = (kcontrol->private_value >> 8) & 0x0f; | |
1882 | int rshift = (kcontrol->private_value >> 12) & 0x0f; | |
1883 | int mask = (kcontrol->private_value >> 16) & 0xff; | |
1884 | int invert = (kcontrol->private_value >> 24) & 0x01; | |
1885 | ||
1886 | ucontrol->value.integer.value[0] = | |
1887 | (snd_soc_read(codec, reg) >> shift) & mask; | |
1888 | if (shift != rshift) | |
1889 | ucontrol->value.integer.value[1] = | |
1890 | (snd_soc_read(codec, reg) >> rshift) & mask; | |
1891 | if (invert) { | |
1892 | ucontrol->value.integer.value[0] = | |
1893 | mask - ucontrol->value.integer.value[0]; | |
1894 | if (shift != rshift) | |
1895 | ucontrol->value.integer.value[1] = | |
1896 | mask - ucontrol->value.integer.value[1]; | |
1897 | } | |
1898 | ||
1899 | return 0; | |
1900 | } | |
1901 | EXPORT_SYMBOL_GPL(snd_soc_get_volsw); | |
1902 | ||
1903 | /** | |
1904 | * snd_soc_put_volsw - single mixer put callback | |
1905 | * @kcontrol: mixer control | |
1906 | * @uinfo: control element information | |
1907 | * | |
1908 | * Callback to set the value of a single mixer control. | |
1909 | * | |
1910 | * Returns 0 for success. | |
1911 | */ | |
1912 | int snd_soc_put_volsw(struct snd_kcontrol *kcontrol, | |
1913 | struct snd_ctl_elem_value *ucontrol) | |
1914 | { | |
1915 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
1916 | int reg = kcontrol->private_value & 0xff; | |
1917 | int shift = (kcontrol->private_value >> 8) & 0x0f; | |
1918 | int rshift = (kcontrol->private_value >> 12) & 0x0f; | |
1919 | int mask = (kcontrol->private_value >> 16) & 0xff; | |
1920 | int invert = (kcontrol->private_value >> 24) & 0x01; | |
1921 | int err; | |
1922 | unsigned short val, val2, val_mask; | |
1923 | ||
1924 | val = (ucontrol->value.integer.value[0] & mask); | |
1925 | if (invert) | |
1926 | val = mask - val; | |
1927 | val_mask = mask << shift; | |
1928 | val = val << shift; | |
1929 | if (shift != rshift) { | |
1930 | val2 = (ucontrol->value.integer.value[1] & mask); | |
1931 | if (invert) | |
1932 | val2 = mask - val2; | |
1933 | val_mask |= mask << rshift; | |
1934 | val |= val2 << rshift; | |
1935 | } | |
1936 | err = snd_soc_update_bits(codec, reg, val_mask, val); | |
1937 | return err; | |
1938 | } | |
1939 | EXPORT_SYMBOL_GPL(snd_soc_put_volsw); | |
1940 | ||
1941 | /** | |
1942 | * snd_soc_info_volsw_2r - double mixer info callback | |
1943 | * @kcontrol: mixer control | |
1944 | * @uinfo: control element information | |
1945 | * | |
1946 | * Callback to provide information about a double mixer control that | |
1947 | * spans 2 codec registers. | |
1948 | * | |
1949 | * Returns 0 for success. | |
1950 | */ | |
1951 | int snd_soc_info_volsw_2r(struct snd_kcontrol *kcontrol, | |
1952 | struct snd_ctl_elem_info *uinfo) | |
1953 | { | |
1954 | int mask = (kcontrol->private_value >> 12) & 0xff; | |
1955 | ||
1956 | uinfo->type = | |
1957 | mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER; | |
1958 | uinfo->count = 2; | |
1959 | uinfo->value.integer.min = 0; | |
1960 | uinfo->value.integer.max = mask; | |
1961 | return 0; | |
1962 | } | |
1963 | EXPORT_SYMBOL_GPL(snd_soc_info_volsw_2r); | |
1964 | ||
1965 | /** | |
1966 | * snd_soc_get_volsw_2r - double mixer get callback | |
1967 | * @kcontrol: mixer control | |
1968 | * @uinfo: control element information | |
1969 | * | |
1970 | * Callback to get the value of a double mixer control that spans 2 registers. | |
1971 | * | |
1972 | * Returns 0 for success. | |
1973 | */ | |
1974 | int snd_soc_get_volsw_2r(struct snd_kcontrol *kcontrol, | |
1975 | struct snd_ctl_elem_value *ucontrol) | |
1976 | { | |
1977 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
1978 | int reg = kcontrol->private_value & 0xff; | |
1979 | int reg2 = (kcontrol->private_value >> 24) & 0xff; | |
1980 | int shift = (kcontrol->private_value >> 8) & 0x0f; | |
1981 | int mask = (kcontrol->private_value >> 12) & 0xff; | |
1982 | int invert = (kcontrol->private_value >> 20) & 0x01; | |
1983 | ||
1984 | ucontrol->value.integer.value[0] = | |
1985 | (snd_soc_read(codec, reg) >> shift) & mask; | |
1986 | ucontrol->value.integer.value[1] = | |
1987 | (snd_soc_read(codec, reg2) >> shift) & mask; | |
1988 | if (invert) { | |
1989 | ucontrol->value.integer.value[0] = | |
1990 | mask - ucontrol->value.integer.value[0]; | |
1991 | ucontrol->value.integer.value[1] = | |
1992 | mask - ucontrol->value.integer.value[1]; | |
1993 | } | |
1994 | ||
1995 | return 0; | |
1996 | } | |
1997 | EXPORT_SYMBOL_GPL(snd_soc_get_volsw_2r); | |
1998 | ||
1999 | /** | |
2000 | * snd_soc_put_volsw_2r - double mixer set callback | |
2001 | * @kcontrol: mixer control | |
2002 | * @uinfo: control element information | |
2003 | * | |
2004 | * Callback to set the value of a double mixer control that spans 2 registers. | |
2005 | * | |
2006 | * Returns 0 for success. | |
2007 | */ | |
2008 | int snd_soc_put_volsw_2r(struct snd_kcontrol *kcontrol, | |
2009 | struct snd_ctl_elem_value *ucontrol) | |
2010 | { | |
2011 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
2012 | int reg = kcontrol->private_value & 0xff; | |
2013 | int reg2 = (kcontrol->private_value >> 24) & 0xff; | |
2014 | int shift = (kcontrol->private_value >> 8) & 0x0f; | |
2015 | int mask = (kcontrol->private_value >> 12) & 0xff; | |
2016 | int invert = (kcontrol->private_value >> 20) & 0x01; | |
2017 | int err; | |
2018 | unsigned short val, val2, val_mask; | |
2019 | ||
2020 | val_mask = mask << shift; | |
2021 | val = (ucontrol->value.integer.value[0] & mask); | |
2022 | val2 = (ucontrol->value.integer.value[1] & mask); | |
2023 | ||
2024 | if (invert) { | |
2025 | val = mask - val; | |
2026 | val2 = mask - val2; | |
2027 | } | |
2028 | ||
2029 | val = val << shift; | |
2030 | val2 = val2 << shift; | |
2031 | ||
2032 | if ((err = snd_soc_update_bits(codec, reg, val_mask, val)) < 0) | |
2033 | return err; | |
2034 | ||
2035 | err = snd_soc_update_bits(codec, reg2, val_mask, val2); | |
2036 | return err; | |
2037 | } | |
2038 | EXPORT_SYMBOL_GPL(snd_soc_put_volsw_2r); | |
2039 | ||
2040 | static int __devinit snd_soc_init(void) | |
2041 | { | |
2042 | printk(KERN_INFO "ASoC version %s\n", SND_SOC_VERSION); | |
2043 | return platform_driver_register(&soc_driver); | |
2044 | } | |
2045 | ||
2046 | static void snd_soc_exit(void) | |
2047 | { | |
2048 | platform_driver_unregister(&soc_driver); | |
2049 | } | |
2050 | ||
2051 | module_init(snd_soc_init); | |
2052 | module_exit(snd_soc_exit); | |
2053 | ||
2054 | /* Module information */ | |
2055 | MODULE_AUTHOR("Liam Girdwood, liam.girdwood@wolfsonmicro.com, www.wolfsonmicro.com"); | |
2056 | MODULE_DESCRIPTION("ALSA SoC Core"); | |
2057 | MODULE_LICENSE("GPL"); |