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db2a4165 FM |
1 | /* |
2 | * soc-core.c -- ALSA SoC Audio Layer | |
3 | * | |
4 | * Copyright 2005 Wolfson Microelectronics PLC. | |
0664d888 LG |
5 | * Copyright 2005 Openedhand Ltd. |
6 | * | |
db2a4165 FM |
7 | * Author: Liam Girdwood |
8 | * liam.girdwood@wolfsonmicro.com or linux@wolfsonmicro.com | |
0664d888 LG |
9 | * with code, comments and ideas from :- |
10 | * Richard Purdie <richard@openedhand.com> | |
db2a4165 FM |
11 | * |
12 | * This program is free software; you can redistribute it and/or modify it | |
13 | * under the terms of the GNU General Public License as published by the | |
14 | * Free Software Foundation; either version 2 of the License, or (at your | |
15 | * option) any later version. | |
16 | * | |
17 | * Revision history | |
18 | * 12th Aug 2005 Initial version. | |
19 | * 25th Oct 2005 Working Codec, Interface and Platform registration. | |
20 | * | |
21 | * TODO: | |
22 | * o Add hw rules to enforce rates, etc. | |
23 | * o More testing with other codecs/machines. | |
24 | * o Add more codecs and platforms to ensure good API coverage. | |
25 | * o Support TDM on PCM and I2S | |
26 | */ | |
27 | ||
28 | #include <linux/module.h> | |
29 | #include <linux/moduleparam.h> | |
30 | #include <linux/init.h> | |
31 | #include <linux/delay.h> | |
32 | #include <linux/pm.h> | |
33 | #include <linux/bitops.h> | |
34 | #include <linux/platform_device.h> | |
35 | #include <sound/driver.h> | |
36 | #include <sound/core.h> | |
37 | #include <sound/pcm.h> | |
38 | #include <sound/pcm_params.h> | |
39 | #include <sound/soc.h> | |
40 | #include <sound/soc-dapm.h> | |
41 | #include <sound/initval.h> | |
42 | ||
43 | /* debug */ | |
44 | #define SOC_DEBUG 0 | |
45 | #if SOC_DEBUG | |
46 | #define dbg(format, arg...) printk(format, ## arg) | |
47 | #else | |
48 | #define dbg(format, arg...) | |
49 | #endif | |
50 | /* debug DAI capabilities matching */ | |
51 | #define SOC_DEBUG_DAI 0 | |
52 | #if SOC_DEBUG_DAI | |
53 | #define dbgc(format, arg...) printk(format, ## arg) | |
54 | #else | |
55 | #define dbgc(format, arg...) | |
56 | #endif | |
57 | ||
a71a468a LG |
58 | #define CODEC_CPU(codec, cpu) ((codec << 4) | cpu) |
59 | ||
db2a4165 FM |
60 | static DEFINE_MUTEX(pcm_mutex); |
61 | static DEFINE_MUTEX(io_mutex); | |
db2a4165 FM |
62 | static DECLARE_WAIT_QUEUE_HEAD(soc_pm_waitq); |
63 | ||
64 | /* supported sample rates */ | |
65 | /* ATTENTION: these values depend on the definition in pcm.h! */ | |
66 | static const unsigned int rates[] = { | |
67 | 5512, 8000, 11025, 16000, 22050, 32000, 44100, | |
68 | 48000, 64000, 88200, 96000, 176400, 192000 | |
69 | }; | |
70 | ||
71 | /* | |
72 | * This is a timeout to do a DAPM powerdown after a stream is closed(). | |
73 | * It can be used to eliminate pops between different playback streams, e.g. | |
74 | * between two audio tracks. | |
75 | */ | |
76 | static int pmdown_time = 5000; | |
77 | module_param(pmdown_time, int, 0); | |
78 | MODULE_PARM_DESC(pmdown_time, "DAPM stream powerdown time (msecs)"); | |
79 | ||
80 | #ifdef CONFIG_SND_SOC_AC97_BUS | |
81 | /* unregister ac97 codec */ | |
82 | static int soc_ac97_dev_unregister(struct snd_soc_codec *codec) | |
83 | { | |
84 | if (codec->ac97->dev.bus) | |
85 | device_unregister(&codec->ac97->dev); | |
86 | return 0; | |
87 | } | |
88 | ||
89 | /* stop no dev release warning */ | |
90 | static void soc_ac97_device_release(struct device *dev){} | |
91 | ||
92 | /* register ac97 codec to bus */ | |
93 | static int soc_ac97_dev_register(struct snd_soc_codec *codec) | |
94 | { | |
95 | int err; | |
96 | ||
97 | codec->ac97->dev.bus = &ac97_bus_type; | |
98 | codec->ac97->dev.parent = NULL; | |
99 | codec->ac97->dev.release = soc_ac97_device_release; | |
100 | ||
101 | snprintf(codec->ac97->dev.bus_id, BUS_ID_SIZE, "%d-%d:%s", | |
102 | codec->card->number, 0, codec->name); | |
103 | err = device_register(&codec->ac97->dev); | |
104 | if (err < 0) { | |
105 | snd_printk(KERN_ERR "Can't register ac97 bus\n"); | |
106 | codec->ac97->dev.bus = NULL; | |
107 | return err; | |
108 | } | |
109 | return 0; | |
110 | } | |
111 | #endif | |
112 | ||
113 | static inline const char* get_dai_name(int type) | |
114 | { | |
115 | switch(type) { | |
116 | case SND_SOC_DAI_AC97: | |
117 | return "AC97"; | |
118 | case SND_SOC_DAI_I2S: | |
119 | return "I2S"; | |
120 | case SND_SOC_DAI_PCM: | |
121 | return "PCM"; | |
122 | } | |
123 | return NULL; | |
124 | } | |
125 | ||
126 | /* get rate format from rate */ | |
127 | static inline int soc_get_rate_format(int rate) | |
128 | { | |
129 | int i; | |
130 | ||
131 | for (i = 0; i < ARRAY_SIZE(rates); i++) { | |
132 | if (rates[i] == rate) | |
133 | return 1 << i; | |
134 | } | |
135 | return 0; | |
136 | } | |
137 | ||
138 | /* gets the audio system mclk/sysclk for the given parameters */ | |
139 | static unsigned inline int soc_get_mclk(struct snd_soc_pcm_runtime *rtd, | |
140 | struct snd_soc_clock_info *info) | |
141 | { | |
142 | struct snd_soc_device *socdev = rtd->socdev; | |
143 | struct snd_soc_machine *machine = socdev->machine; | |
144 | int i; | |
145 | ||
146 | /* find the matching machine config and get it's mclk for the given | |
147 | * sample rate and hardware format */ | |
148 | for(i = 0; i < machine->num_links; i++) { | |
149 | if (machine->dai_link[i].cpu_dai == rtd->cpu_dai && | |
150 | machine->dai_link[i].config_sysclk) | |
151 | return machine->dai_link[i].config_sysclk(rtd, info); | |
152 | } | |
153 | return 0; | |
154 | } | |
155 | ||
156 | /* changes a bitclk multiplier mask to a divider mask */ | |
a71a468a | 157 | static u64 soc_bfs_rcw_to_div(u64 bfs, int rate, unsigned int mclk, |
db2a4165 FM |
158 | unsigned int pcmfmt, unsigned int chn) |
159 | { | |
160 | int i, j; | |
a71a468a | 161 | u64 bfs_ = 0; |
db2a4165 FM |
162 | int size = snd_pcm_format_physical_width(pcmfmt), min = 0; |
163 | ||
164 | if (size <= 0) | |
165 | return 0; | |
166 | ||
167 | /* the minimum bit clock that has enough bandwidth */ | |
168 | min = size * rate * chn; | |
a71a468a | 169 | dbgc("rcw --> div min bclk %d with mclk %d\n", min, mclk); |
db2a4165 | 170 | |
a71a468a | 171 | for (i = 0; i < 64; i++) { |
db2a4165 | 172 | if ((bfs >> i) & 0x1) { |
a71a468a LG |
173 | j = min * (i + 1); |
174 | bfs_ |= SND_SOC_FSBD(mclk/j); | |
175 | dbgc("rcw --> div support mult %d\n", | |
176 | SND_SOC_FSBD_REAL(1<<i)); | |
db2a4165 FM |
177 | } |
178 | } | |
179 | ||
180 | return bfs_; | |
181 | } | |
182 | ||
183 | /* changes a bitclk divider mask to a multiplier mask */ | |
a71a468a | 184 | static u64 soc_bfs_div_to_rcw(u64 bfs, int rate, unsigned int mclk, |
db2a4165 FM |
185 | unsigned int pcmfmt, unsigned int chn) |
186 | { | |
187 | int i, j; | |
a71a468a | 188 | u64 bfs_ = 0; |
db2a4165 FM |
189 | |
190 | int size = snd_pcm_format_physical_width(pcmfmt), min = 0; | |
191 | ||
192 | if (size <= 0) | |
193 | return 0; | |
194 | ||
195 | /* the minimum bit clock that has enough bandwidth */ | |
196 | min = size * rate * chn; | |
a71a468a | 197 | dbgc("div to rcw min bclk %d with mclk %d\n", min, mclk); |
db2a4165 | 198 | |
a71a468a | 199 | for (i = 0; i < 64; i++) { |
db2a4165 | 200 | if ((bfs >> i) & 0x1) { |
a71a468a | 201 | j = mclk / (i + 1); |
db2a4165 | 202 | if (j >= min) { |
a71a468a LG |
203 | bfs_ |= SND_SOC_FSBW(j/min); |
204 | dbgc("div --> rcw support div %d\n", | |
205 | SND_SOC_FSBW_REAL(1<<i)); | |
db2a4165 FM |
206 | } |
207 | } | |
208 | } | |
209 | ||
210 | return bfs_; | |
211 | } | |
212 | ||
a71a468a LG |
213 | /* changes a constant bitclk to a multiplier mask */ |
214 | static u64 soc_bfs_rate_to_rcw(u64 bfs, int rate, unsigned int mclk, | |
215 | unsigned int pcmfmt, unsigned int chn) | |
216 | { | |
217 | unsigned int bfs_ = rate * bfs; | |
218 | int size = snd_pcm_format_physical_width(pcmfmt), min = 0; | |
219 | ||
220 | if (size <= 0) | |
221 | return 0; | |
222 | ||
223 | /* the minimum bit clock that has enough bandwidth */ | |
224 | min = size * rate * chn; | |
225 | dbgc("rate --> rcw min bclk %d with mclk %d\n", min, mclk); | |
226 | ||
227 | if (bfs_ < min) | |
228 | return 0; | |
229 | else { | |
230 | bfs_ = SND_SOC_FSBW(bfs_/min); | |
231 | dbgc("rate --> rcw support div %d\n", SND_SOC_FSBW_REAL(bfs_)); | |
232 | return bfs_; | |
233 | } | |
234 | } | |
235 | ||
236 | /* changes a bitclk multiplier mask to a divider mask */ | |
237 | static u64 soc_bfs_rate_to_div(u64 bfs, int rate, unsigned int mclk, | |
238 | unsigned int pcmfmt, unsigned int chn) | |
239 | { | |
240 | unsigned int bfs_ = rate * bfs; | |
241 | int size = snd_pcm_format_physical_width(pcmfmt), min = 0; | |
242 | ||
243 | if (size <= 0) | |
244 | return 0; | |
245 | ||
246 | /* the minimum bit clock that has enough bandwidth */ | |
247 | min = size * rate * chn; | |
248 | dbgc("rate --> div min bclk %d with mclk %d\n", min, mclk); | |
249 | ||
250 | if (bfs_ < min) | |
251 | return 0; | |
252 | else { | |
253 | bfs_ = SND_SOC_FSBW(mclk/bfs_); | |
254 | dbgc("rate --> div support div %d\n", SND_SOC_FSBD_REAL(bfs_)); | |
255 | return bfs_; | |
256 | } | |
257 | } | |
258 | ||
db2a4165 FM |
259 | /* Matches codec DAI and SoC CPU DAI hardware parameters */ |
260 | static int soc_hw_match_params(struct snd_pcm_substream *substream, | |
261 | struct snd_pcm_hw_params *params) | |
262 | { | |
263 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
264 | struct snd_soc_dai_mode *codec_dai_mode = NULL; | |
265 | struct snd_soc_dai_mode *cpu_dai_mode = NULL; | |
266 | struct snd_soc_clock_info clk_info; | |
a71a468a | 267 | unsigned int fs, mclk, rate = params_rate(params), |
db2a4165 FM |
268 | chn, j, k, cpu_bclk, codec_bclk, pcmrate; |
269 | u16 fmt = 0; | |
a71a468a | 270 | u64 codec_bfs, cpu_bfs; |
db2a4165 FM |
271 | |
272 | dbg("asoc: match version %s\n", SND_SOC_VERSION); | |
273 | clk_info.rate = rate; | |
274 | pcmrate = soc_get_rate_format(rate); | |
275 | ||
276 | /* try and find a match from the codec and cpu DAI capabilities */ | |
277 | for (j = 0; j < rtd->codec_dai->caps.num_modes; j++) { | |
278 | for (k = 0; k < rtd->cpu_dai->caps.num_modes; k++) { | |
279 | codec_dai_mode = &rtd->codec_dai->caps.mode[j]; | |
280 | cpu_dai_mode = &rtd->cpu_dai->caps.mode[k]; | |
281 | ||
282 | if (!(codec_dai_mode->pcmrate & cpu_dai_mode->pcmrate & | |
283 | pcmrate)) { | |
284 | dbgc("asoc: DAI[%d:%d] failed to match rate\n", j, k); | |
285 | continue; | |
286 | } | |
287 | ||
288 | fmt = codec_dai_mode->fmt & cpu_dai_mode->fmt; | |
289 | if (!(fmt & SND_SOC_DAIFMT_FORMAT_MASK)) { | |
290 | dbgc("asoc: DAI[%d:%d] failed to match format\n", j, k); | |
291 | continue; | |
292 | } | |
293 | ||
294 | if (!(fmt & SND_SOC_DAIFMT_CLOCK_MASK)) { | |
295 | dbgc("asoc: DAI[%d:%d] failed to match clock masters\n", | |
296 | j, k); | |
297 | continue; | |
298 | } | |
299 | ||
300 | if (!(fmt & SND_SOC_DAIFMT_INV_MASK)) { | |
301 | dbgc("asoc: DAI[%d:%d] failed to match invert\n", j, k); | |
302 | continue; | |
303 | } | |
304 | ||
305 | if (!(codec_dai_mode->pcmfmt & cpu_dai_mode->pcmfmt)) { | |
306 | dbgc("asoc: DAI[%d:%d] failed to match pcm format\n", j, k); | |
307 | continue; | |
308 | } | |
309 | ||
310 | if (!(codec_dai_mode->pcmdir & cpu_dai_mode->pcmdir)) { | |
311 | dbgc("asoc: DAI[%d:%d] failed to match direction\n", j, k); | |
312 | continue; | |
313 | } | |
314 | ||
315 | /* todo - still need to add tdm selection */ | |
316 | rtd->cpu_dai->dai_runtime.fmt = | |
317 | rtd->codec_dai->dai_runtime.fmt = | |
318 | 1 << (ffs(fmt & SND_SOC_DAIFMT_FORMAT_MASK) -1) | | |
319 | 1 << (ffs(fmt & SND_SOC_DAIFMT_CLOCK_MASK) - 1) | | |
320 | 1 << (ffs(fmt & SND_SOC_DAIFMT_INV_MASK) - 1); | |
321 | clk_info.bclk_master = | |
322 | rtd->cpu_dai->dai_runtime.fmt & SND_SOC_DAIFMT_CLOCK_MASK; | |
323 | ||
324 | /* make sure the ratio between rate and master | |
325 | * clock is acceptable*/ | |
326 | fs = (cpu_dai_mode->fs & codec_dai_mode->fs); | |
327 | if (fs == 0) { | |
328 | dbgc("asoc: DAI[%d:%d] failed to match FS\n", j, k); | |
329 | continue; | |
330 | } | |
331 | clk_info.fs = rtd->cpu_dai->dai_runtime.fs = | |
332 | rtd->codec_dai->dai_runtime.fs = fs; | |
333 | ||
334 | /* calculate audio system clocking using slowest clocks possible*/ | |
335 | mclk = soc_get_mclk(rtd, &clk_info); | |
336 | if (mclk == 0) { | |
337 | dbgc("asoc: DAI[%d:%d] configuration not clockable\n", j, k); | |
338 | dbgc("asoc: rate %d fs %d master %x\n", rate, fs, | |
339 | clk_info.bclk_master); | |
340 | continue; | |
341 | } | |
342 | ||
343 | /* calculate word size (per channel) and frame size */ | |
344 | rtd->codec_dai->dai_runtime.pcmfmt = | |
345 | rtd->cpu_dai->dai_runtime.pcmfmt = | |
346 | 1 << params_format(params); | |
347 | ||
348 | chn = params_channels(params); | |
349 | /* i2s always has left and right */ | |
350 | if (params_channels(params) == 1 && | |
351 | rtd->cpu_dai->dai_runtime.fmt & (SND_SOC_DAIFMT_I2S | | |
352 | SND_SOC_DAIFMT_RIGHT_J | SND_SOC_DAIFMT_LEFT_J)) | |
353 | chn <<= 1; | |
354 | ||
355 | /* Calculate bfs - the ratio between bitclock and the sample rate | |
356 | * We must take into consideration the dividers and multipliers | |
357 | * used in the codec and cpu DAI modes. We always choose the | |
358 | * lowest possible clocks to reduce power. | |
359 | */ | |
a71a468a LG |
360 | switch (CODEC_CPU(codec_dai_mode->flags, cpu_dai_mode->flags)) { |
361 | case CODEC_CPU(SND_SOC_DAI_BFS_DIV, SND_SOC_DAI_BFS_DIV): | |
db2a4165 FM |
362 | /* cpu & codec bfs dividers */ |
363 | rtd->cpu_dai->dai_runtime.bfs = | |
364 | rtd->codec_dai->dai_runtime.bfs = | |
365 | 1 << (fls(codec_dai_mode->bfs & cpu_dai_mode->bfs) - 1); | |
a71a468a LG |
366 | break; |
367 | case CODEC_CPU(SND_SOC_DAI_BFS_DIV, SND_SOC_DAI_BFS_RCW): | |
368 | /* normalise bfs codec divider & cpu rcw mult */ | |
369 | codec_bfs = soc_bfs_div_to_rcw(codec_dai_mode->bfs, rate, | |
db2a4165 FM |
370 | mclk, rtd->codec_dai->dai_runtime.pcmfmt, chn); |
371 | rtd->cpu_dai->dai_runtime.bfs = | |
372 | 1 << (ffs(codec_bfs & cpu_dai_mode->bfs) - 1); | |
a71a468a | 373 | cpu_bfs = soc_bfs_rcw_to_div(cpu_dai_mode->bfs, rate, mclk, |
db2a4165 FM |
374 | rtd->codec_dai->dai_runtime.pcmfmt, chn); |
375 | rtd->codec_dai->dai_runtime.bfs = | |
376 | 1 << (fls(codec_dai_mode->bfs & cpu_bfs) - 1); | |
a71a468a LG |
377 | break; |
378 | case CODEC_CPU(SND_SOC_DAI_BFS_RCW, SND_SOC_DAI_BFS_DIV): | |
379 | /* normalise bfs codec rcw mult & cpu divider */ | |
380 | codec_bfs = soc_bfs_rcw_to_div(codec_dai_mode->bfs, rate, | |
db2a4165 FM |
381 | mclk, rtd->codec_dai->dai_runtime.pcmfmt, chn); |
382 | rtd->cpu_dai->dai_runtime.bfs = | |
383 | 1 << (fls(codec_bfs & cpu_dai_mode->bfs) -1); | |
a71a468a | 384 | cpu_bfs = soc_bfs_div_to_rcw(cpu_dai_mode->bfs, rate, mclk, |
db2a4165 FM |
385 | rtd->codec_dai->dai_runtime.pcmfmt, chn); |
386 | rtd->codec_dai->dai_runtime.bfs = | |
387 | 1 << (ffs(codec_dai_mode->bfs & cpu_bfs) -1); | |
a71a468a LG |
388 | break; |
389 | case CODEC_CPU(SND_SOC_DAI_BFS_RCW, SND_SOC_DAI_BFS_RCW): | |
390 | /* codec & cpu bfs rate rcw multipliers */ | |
db2a4165 FM |
391 | rtd->cpu_dai->dai_runtime.bfs = |
392 | rtd->codec_dai->dai_runtime.bfs = | |
393 | 1 << (ffs(codec_dai_mode->bfs & cpu_dai_mode->bfs) -1); | |
a71a468a LG |
394 | break; |
395 | case CODEC_CPU(SND_SOC_DAI_BFS_DIV, SND_SOC_DAI_BFS_RATE): | |
396 | /* normalise cpu bfs rate const multiplier & codec div */ | |
397 | cpu_bfs = soc_bfs_rate_to_div(cpu_dai_mode->bfs, rate, | |
398 | mclk, rtd->codec_dai->dai_runtime.pcmfmt, chn); | |
399 | if(codec_dai_mode->bfs & cpu_bfs) { | |
400 | rtd->codec_dai->dai_runtime.bfs = cpu_bfs; | |
401 | rtd->cpu_dai->dai_runtime.bfs = cpu_dai_mode->bfs; | |
402 | } else | |
403 | rtd->cpu_dai->dai_runtime.bfs = 0; | |
404 | break; | |
405 | case CODEC_CPU(SND_SOC_DAI_BFS_RCW, SND_SOC_DAI_BFS_RATE): | |
406 | /* normalise cpu bfs rate const multiplier & codec rcw mult */ | |
407 | cpu_bfs = soc_bfs_rate_to_rcw(cpu_dai_mode->bfs, rate, | |
408 | mclk, rtd->codec_dai->dai_runtime.pcmfmt, chn); | |
409 | if(codec_dai_mode->bfs & cpu_bfs) { | |
410 | rtd->codec_dai->dai_runtime.bfs = cpu_bfs; | |
411 | rtd->cpu_dai->dai_runtime.bfs = cpu_dai_mode->bfs; | |
412 | } else | |
413 | rtd->cpu_dai->dai_runtime.bfs = 0; | |
414 | break; | |
415 | case CODEC_CPU(SND_SOC_DAI_BFS_RATE, SND_SOC_DAI_BFS_RCW): | |
416 | /* normalise cpu bfs rate rcw multiplier & codec const mult */ | |
417 | codec_bfs = soc_bfs_rate_to_rcw(codec_dai_mode->bfs, rate, | |
418 | mclk, rtd->codec_dai->dai_runtime.pcmfmt, chn); | |
419 | if(cpu_dai_mode->bfs & codec_bfs) { | |
420 | rtd->cpu_dai->dai_runtime.bfs = codec_bfs; | |
421 | rtd->codec_dai->dai_runtime.bfs = codec_dai_mode->bfs; | |
422 | } else | |
423 | rtd->cpu_dai->dai_runtime.bfs = 0; | |
424 | break; | |
425 | case CODEC_CPU(SND_SOC_DAI_BFS_RATE, SND_SOC_DAI_BFS_DIV): | |
426 | /* normalise cpu bfs div & codec const mult */ | |
427 | codec_bfs = soc_bfs_rate_to_div(codec_dai_mode->bfs, rate, | |
428 | mclk, rtd->codec_dai->dai_runtime.pcmfmt, chn); | |
2e26e483 | 429 | if(cpu_dai_mode->bfs & codec_bfs) { |
a71a468a LG |
430 | rtd->cpu_dai->dai_runtime.bfs = codec_bfs; |
431 | rtd->codec_dai->dai_runtime.bfs = codec_dai_mode->bfs; | |
432 | } else | |
433 | rtd->cpu_dai->dai_runtime.bfs = 0; | |
434 | break; | |
435 | case CODEC_CPU(SND_SOC_DAI_BFS_RATE, SND_SOC_DAI_BFS_RATE): | |
436 | /* cpu & codec constant mult */ | |
437 | if(codec_dai_mode->bfs == cpu_dai_mode->bfs) | |
438 | rtd->cpu_dai->dai_runtime.bfs = | |
439 | rtd->codec_dai->dai_runtime.bfs = | |
440 | codec_dai_mode->bfs; | |
441 | else | |
442 | rtd->cpu_dai->dai_runtime.bfs = | |
443 | rtd->codec_dai->dai_runtime.bfs = 0; | |
444 | break; | |
db2a4165 FM |
445 | } |
446 | ||
447 | /* make sure the bit clock speed is acceptable */ | |
448 | if (!rtd->cpu_dai->dai_runtime.bfs || | |
449 | !rtd->codec_dai->dai_runtime.bfs) { | |
450 | dbgc("asoc: DAI[%d:%d] failed to match BFS\n", j, k); | |
a71a468a | 451 | dbgc("asoc: cpu_dai %llu codec %llu\n", |
db2a4165 FM |
452 | rtd->cpu_dai->dai_runtime.bfs, |
453 | rtd->codec_dai->dai_runtime.bfs); | |
454 | dbgc("asoc: mclk %d hwfmt %x\n", mclk, fmt); | |
455 | continue; | |
456 | } | |
457 | ||
458 | goto found; | |
459 | } | |
460 | } | |
461 | printk(KERN_ERR "asoc: no matching DAI found between codec and CPU\n"); | |
462 | return -EINVAL; | |
463 | ||
464 | found: | |
465 | /* we have matching DAI's, so complete the runtime info */ | |
466 | rtd->codec_dai->dai_runtime.pcmrate = | |
467 | rtd->cpu_dai->dai_runtime.pcmrate = | |
468 | soc_get_rate_format(rate); | |
469 | ||
470 | rtd->codec_dai->dai_runtime.priv = codec_dai_mode->priv; | |
471 | rtd->cpu_dai->dai_runtime.priv = cpu_dai_mode->priv; | |
472 | rtd->codec_dai->dai_runtime.flags = codec_dai_mode->flags; | |
473 | rtd->cpu_dai->dai_runtime.flags = cpu_dai_mode->flags; | |
474 | ||
475 | /* for debug atm */ | |
476 | dbg("asoc: DAI[%d:%d] Match OK\n", j, k); | |
477 | if (rtd->codec_dai->dai_runtime.flags == SND_SOC_DAI_BFS_DIV) { | |
478 | codec_bclk = (rtd->codec_dai->dai_runtime.fs * params_rate(params)) / | |
479 | SND_SOC_FSBD_REAL(rtd->codec_dai->dai_runtime.bfs); | |
480 | dbg("asoc: codec fs %d mclk %d bfs div %d bclk %d\n", | |
481 | rtd->codec_dai->dai_runtime.fs, mclk, | |
482 | SND_SOC_FSBD_REAL(rtd->codec_dai->dai_runtime.bfs), codec_bclk); | |
a71a468a LG |
483 | } else if(rtd->codec_dai->dai_runtime.flags == SND_SOC_DAI_BFS_RATE) { |
484 | codec_bclk = params_rate(params) * rtd->codec_dai->dai_runtime.bfs; | |
485 | dbg("asoc: codec fs %d mclk %d bfs rate mult %llu bclk %d\n", | |
db2a4165 | 486 | rtd->codec_dai->dai_runtime.fs, mclk, |
a71a468a LG |
487 | rtd->codec_dai->dai_runtime.bfs, codec_bclk); |
488 | } else if (rtd->cpu_dai->dai_runtime.flags == SND_SOC_DAI_BFS_RCW) { | |
489 | codec_bclk = params_rate(params) * params_channels(params) * | |
490 | snd_pcm_format_physical_width(rtd->codec_dai->dai_runtime.pcmfmt) * | |
491 | SND_SOC_FSBW_REAL(rtd->codec_dai->dai_runtime.bfs); | |
492 | dbg("asoc: codec fs %d mclk %d bfs rcw mult %d bclk %d\n", | |
493 | rtd->codec_dai->dai_runtime.fs, mclk, | |
494 | SND_SOC_FSBW_REAL(rtd->codec_dai->dai_runtime.bfs), codec_bclk); | |
495 | } else | |
496 | codec_bclk = 0; | |
497 | ||
db2a4165 FM |
498 | if (rtd->cpu_dai->dai_runtime.flags == SND_SOC_DAI_BFS_DIV) { |
499 | cpu_bclk = (rtd->cpu_dai->dai_runtime.fs * params_rate(params)) / | |
500 | SND_SOC_FSBD_REAL(rtd->cpu_dai->dai_runtime.bfs); | |
501 | dbg("asoc: cpu fs %d mclk %d bfs div %d bclk %d\n", | |
502 | rtd->cpu_dai->dai_runtime.fs, mclk, | |
503 | SND_SOC_FSBD_REAL(rtd->cpu_dai->dai_runtime.bfs), cpu_bclk); | |
a71a468a LG |
504 | } else if (rtd->cpu_dai->dai_runtime.flags == SND_SOC_DAI_BFS_RATE) { |
505 | cpu_bclk = params_rate(params) * rtd->cpu_dai->dai_runtime.bfs; | |
506 | dbg("asoc: cpu fs %d mclk %d bfs rate mult %llu bclk %d\n", | |
db2a4165 | 507 | rtd->cpu_dai->dai_runtime.fs, mclk, |
a71a468a LG |
508 | rtd->cpu_dai->dai_runtime.bfs, cpu_bclk); |
509 | } else if (rtd->cpu_dai->dai_runtime.flags == SND_SOC_DAI_BFS_RCW) { | |
510 | cpu_bclk = params_rate(params) * params_channels(params) * | |
511 | snd_pcm_format_physical_width(rtd->cpu_dai->dai_runtime.pcmfmt) * | |
512 | SND_SOC_FSBW_REAL(rtd->cpu_dai->dai_runtime.bfs); | |
513 | dbg("asoc: cpu fs %d mclk %d bfs mult rcw %d bclk %d\n", | |
514 | rtd->cpu_dai->dai_runtime.fs, mclk, | |
515 | SND_SOC_FSBW_REAL(rtd->cpu_dai->dai_runtime.bfs), cpu_bclk); | |
516 | } else | |
517 | cpu_bclk = 0; | |
db2a4165 FM |
518 | |
519 | /* | |
520 | * Check we have matching bitclocks. If we don't then it means the | |
521 | * sysclock returned by either the codec or cpu DAI (selected by the | |
522 | * machine sysclock function) is wrong compared with the supported DAI | |
0664d888 LG |
523 | * modes for the codec or cpu DAI. Check your codec or CPU DAI |
524 | * config_sysclock() functions. | |
db2a4165 | 525 | */ |
a71a468a | 526 | if (cpu_bclk != codec_bclk && cpu_bclk){ |
db2a4165 FM |
527 | printk(KERN_ERR |
528 | "asoc: codec and cpu bitclocks differ, audio may be wrong speed\n" | |
529 | ); | |
530 | printk(KERN_ERR "asoc: codec %d != cpu %d\n", codec_bclk, cpu_bclk); | |
531 | } | |
532 | ||
533 | switch(rtd->cpu_dai->dai_runtime.fmt & SND_SOC_DAIFMT_CLOCK_MASK) { | |
534 | case SND_SOC_DAIFMT_CBM_CFM: | |
535 | dbg("asoc: DAI codec BCLK master, LRC master\n"); | |
536 | break; | |
537 | case SND_SOC_DAIFMT_CBS_CFM: | |
538 | dbg("asoc: DAI codec BCLK slave, LRC master\n"); | |
539 | break; | |
540 | case SND_SOC_DAIFMT_CBM_CFS: | |
541 | dbg("asoc: DAI codec BCLK master, LRC slave\n"); | |
542 | break; | |
543 | case SND_SOC_DAIFMT_CBS_CFS: | |
544 | dbg("asoc: DAI codec BCLK slave, LRC slave\n"); | |
545 | break; | |
546 | } | |
547 | dbg("asoc: mode %x, invert %x\n", | |
548 | rtd->cpu_dai->dai_runtime.fmt & SND_SOC_DAIFMT_FORMAT_MASK, | |
549 | rtd->cpu_dai->dai_runtime.fmt & SND_SOC_DAIFMT_INV_MASK); | |
550 | dbg("asoc: audio rate %d chn %d fmt %x\n", params_rate(params), | |
551 | params_channels(params), params_format(params)); | |
552 | ||
553 | return 0; | |
554 | } | |
555 | ||
556 | static inline u32 get_rates(struct snd_soc_dai_mode *modes, int nmodes) | |
557 | { | |
558 | int i; | |
559 | u32 rates = 0; | |
560 | ||
561 | for(i = 0; i < nmodes; i++) | |
562 | rates |= modes[i].pcmrate; | |
563 | ||
564 | return rates; | |
565 | } | |
566 | ||
567 | static inline u64 get_formats(struct snd_soc_dai_mode *modes, int nmodes) | |
568 | { | |
569 | int i; | |
570 | u64 formats = 0; | |
571 | ||
572 | for(i = 0; i < nmodes; i++) | |
573 | formats |= modes[i].pcmfmt; | |
574 | ||
575 | return formats; | |
576 | } | |
577 | ||
578 | /* | |
579 | * Called by ALSA when a PCM substream is opened, the runtime->hw record is | |
580 | * then initialized and any private data can be allocated. This also calls | |
581 | * startup for the cpu DAI, platform, machine and codec DAI. | |
582 | */ | |
583 | static int soc_pcm_open(struct snd_pcm_substream *substream) | |
584 | { | |
585 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
586 | struct snd_soc_device *socdev = rtd->socdev; | |
587 | struct snd_pcm_runtime *runtime = substream->runtime; | |
588 | struct snd_soc_machine *machine = socdev->machine; | |
589 | struct snd_soc_platform *platform = socdev->platform; | |
590 | struct snd_soc_codec_dai *codec_dai = rtd->codec_dai; | |
591 | struct snd_soc_cpu_dai *cpu_dai = rtd->cpu_dai; | |
592 | int ret = 0; | |
593 | ||
594 | mutex_lock(&pcm_mutex); | |
595 | ||
596 | /* startup the audio subsystem */ | |
597 | if (rtd->cpu_dai->ops.startup) { | |
598 | ret = rtd->cpu_dai->ops.startup(substream); | |
599 | if (ret < 0) { | |
600 | printk(KERN_ERR "asoc: can't open interface %s\n", | |
601 | rtd->cpu_dai->name); | |
602 | goto out; | |
603 | } | |
604 | } | |
605 | ||
606 | if (platform->pcm_ops->open) { | |
607 | ret = platform->pcm_ops->open(substream); | |
608 | if (ret < 0) { | |
609 | printk(KERN_ERR "asoc: can't open platform %s\n", platform->name); | |
610 | goto platform_err; | |
611 | } | |
612 | } | |
613 | ||
614 | if (machine->ops && machine->ops->startup) { | |
615 | ret = machine->ops->startup(substream); | |
616 | if (ret < 0) { | |
617 | printk(KERN_ERR "asoc: %s startup failed\n", machine->name); | |
618 | goto machine_err; | |
619 | } | |
620 | } | |
621 | ||
622 | if (rtd->codec_dai->ops.startup) { | |
623 | ret = rtd->codec_dai->ops.startup(substream); | |
624 | if (ret < 0) { | |
625 | printk(KERN_ERR "asoc: can't open codec %s\n", | |
626 | rtd->codec_dai->name); | |
627 | goto codec_dai_err; | |
628 | } | |
629 | } | |
630 | ||
631 | /* create runtime params from DMA, codec and cpu DAI */ | |
632 | if (runtime->hw.rates) | |
633 | runtime->hw.rates &= | |
634 | get_rates(codec_dai->caps.mode, codec_dai->caps.num_modes) & | |
635 | get_rates(cpu_dai->caps.mode, cpu_dai->caps.num_modes); | |
636 | else | |
637 | runtime->hw.rates = | |
638 | get_rates(codec_dai->caps.mode, codec_dai->caps.num_modes) & | |
639 | get_rates(cpu_dai->caps.mode, cpu_dai->caps.num_modes); | |
640 | if (runtime->hw.formats) | |
641 | runtime->hw.formats &= | |
642 | get_formats(codec_dai->caps.mode, codec_dai->caps.num_modes) & | |
643 | get_formats(cpu_dai->caps.mode, cpu_dai->caps.num_modes); | |
644 | else | |
645 | runtime->hw.formats = | |
646 | get_formats(codec_dai->caps.mode, codec_dai->caps.num_modes) & | |
647 | get_formats(cpu_dai->caps.mode, cpu_dai->caps.num_modes); | |
648 | ||
649 | /* Check that the codec and cpu DAI's are compatible */ | |
650 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
651 | runtime->hw.rate_min = | |
652 | max(rtd->codec_dai->playback.rate_min, | |
653 | rtd->cpu_dai->playback.rate_min); | |
654 | runtime->hw.rate_max = | |
655 | min(rtd->codec_dai->playback.rate_max, | |
656 | rtd->cpu_dai->playback.rate_max); | |
657 | runtime->hw.channels_min = | |
658 | max(rtd->codec_dai->playback.channels_min, | |
659 | rtd->cpu_dai->playback.channels_min); | |
660 | runtime->hw.channels_max = | |
661 | min(rtd->codec_dai->playback.channels_max, | |
662 | rtd->cpu_dai->playback.channels_max); | |
663 | } else { | |
664 | runtime->hw.rate_min = | |
665 | max(rtd->codec_dai->capture.rate_min, | |
666 | rtd->cpu_dai->capture.rate_min); | |
667 | runtime->hw.rate_max = | |
668 | min(rtd->codec_dai->capture.rate_max, | |
669 | rtd->cpu_dai->capture.rate_max); | |
670 | runtime->hw.channels_min = | |
671 | max(rtd->codec_dai->capture.channels_min, | |
672 | rtd->cpu_dai->capture.channels_min); | |
673 | runtime->hw.channels_max = | |
674 | min(rtd->codec_dai->capture.channels_max, | |
675 | rtd->cpu_dai->capture.channels_max); | |
676 | } | |
677 | ||
678 | snd_pcm_limit_hw_rates(runtime); | |
679 | if (!runtime->hw.rates) { | |
680 | printk(KERN_ERR "asoc: %s <-> %s No matching rates\n", | |
681 | rtd->codec_dai->name, rtd->cpu_dai->name); | |
682 | goto codec_dai_err; | |
683 | } | |
684 | if (!runtime->hw.formats) { | |
685 | printk(KERN_ERR "asoc: %s <-> %s No matching formats\n", | |
686 | rtd->codec_dai->name, rtd->cpu_dai->name); | |
687 | goto codec_dai_err; | |
688 | } | |
689 | if (!runtime->hw.channels_min || !runtime->hw.channels_max) { | |
690 | printk(KERN_ERR "asoc: %s <-> %s No matching channels\n", | |
691 | rtd->codec_dai->name, rtd->cpu_dai->name); | |
692 | goto codec_dai_err; | |
693 | } | |
694 | ||
695 | dbg("asoc: %s <-> %s info:\n", rtd->codec_dai->name, rtd->cpu_dai->name); | |
b5c5fd24 LG |
696 | dbg("asoc: rate mask 0x%x\n", runtime->hw.rates); |
697 | dbg("asoc: min ch %d max ch %d\n", runtime->hw.channels_min, | |
698 | runtime->hw.channels_max); | |
699 | dbg("asoc: min rate %d max rate %d\n", runtime->hw.rate_min, | |
700 | runtime->hw.rate_max); | |
db2a4165 FM |
701 | |
702 | ||
703 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
704 | rtd->cpu_dai->playback.active = rtd->codec_dai->playback.active = 1; | |
705 | else | |
706 | rtd->cpu_dai->capture.active = rtd->codec_dai->capture.active = 1; | |
707 | rtd->cpu_dai->active = rtd->codec_dai->active = 1; | |
708 | rtd->cpu_dai->runtime = runtime; | |
709 | socdev->codec->active++; | |
710 | mutex_unlock(&pcm_mutex); | |
711 | return 0; | |
712 | ||
713 | codec_dai_err: | |
714 | if (machine->ops && machine->ops->shutdown) | |
715 | machine->ops->shutdown(substream); | |
716 | ||
717 | machine_err: | |
718 | if (platform->pcm_ops->close) | |
719 | platform->pcm_ops->close(substream); | |
720 | ||
721 | platform_err: | |
722 | if (rtd->cpu_dai->ops.shutdown) | |
723 | rtd->cpu_dai->ops.shutdown(substream); | |
724 | out: | |
725 | mutex_unlock(&pcm_mutex); | |
726 | return ret; | |
727 | } | |
728 | ||
729 | /* | |
730 | * Power down the audio subsytem pmdown_time msecs after close is called. | |
731 | * This is to ensure there are no pops or clicks in between any music tracks | |
732 | * due to DAPM power cycling. | |
733 | */ | |
4484bb2e | 734 | static void close_delayed_work(struct work_struct *work) |
db2a4165 | 735 | { |
4484bb2e AM |
736 | struct snd_soc_device *socdev = |
737 | container_of(work, struct snd_soc_device, delayed_work.work); | |
db2a4165 FM |
738 | struct snd_soc_codec *codec = socdev->codec; |
739 | struct snd_soc_codec_dai *codec_dai; | |
740 | int i; | |
741 | ||
742 | mutex_lock(&pcm_mutex); | |
743 | for(i = 0; i < codec->num_dai; i++) { | |
744 | codec_dai = &codec->dai[i]; | |
745 | ||
746 | dbg("pop wq checking: %s status: %s waiting: %s\n", | |
747 | codec_dai->playback.stream_name, | |
748 | codec_dai->playback.active ? "active" : "inactive", | |
749 | codec_dai->pop_wait ? "yes" : "no"); | |
750 | ||
751 | /* are we waiting on this codec DAI stream */ | |
752 | if (codec_dai->pop_wait == 1) { | |
753 | ||
754 | codec_dai->pop_wait = 0; | |
755 | snd_soc_dapm_stream_event(codec, codec_dai->playback.stream_name, | |
756 | SND_SOC_DAPM_STREAM_STOP); | |
757 | ||
758 | /* power down the codec power domain if no longer active */ | |
759 | if (codec->active == 0) { | |
760 | dbg("pop wq D3 %s %s\n", codec->name, | |
761 | codec_dai->playback.stream_name); | |
762 | if (codec->dapm_event) | |
763 | codec->dapm_event(codec, SNDRV_CTL_POWER_D3hot); | |
764 | } | |
765 | } | |
766 | } | |
767 | mutex_unlock(&pcm_mutex); | |
768 | } | |
769 | ||
770 | /* | |
771 | * Called by ALSA when a PCM substream is closed. Private data can be | |
772 | * freed here. The cpu DAI, codec DAI, machine and platform are also | |
773 | * shutdown. | |
774 | */ | |
775 | static int soc_codec_close(struct snd_pcm_substream *substream) | |
776 | { | |
777 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
778 | struct snd_soc_device *socdev = rtd->socdev; | |
779 | struct snd_soc_machine *machine = socdev->machine; | |
780 | struct snd_soc_platform *platform = socdev->platform; | |
781 | struct snd_soc_codec *codec = socdev->codec; | |
782 | ||
783 | mutex_lock(&pcm_mutex); | |
784 | ||
785 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
786 | rtd->cpu_dai->playback.active = rtd->codec_dai->playback.active = 0; | |
787 | else | |
788 | rtd->cpu_dai->capture.active = rtd->codec_dai->capture.active = 0; | |
789 | ||
790 | if (rtd->codec_dai->playback.active == 0 && | |
791 | rtd->codec_dai->capture.active == 0) { | |
792 | rtd->cpu_dai->active = rtd->codec_dai->active = 0; | |
793 | } | |
794 | codec->active--; | |
795 | ||
796 | if (rtd->cpu_dai->ops.shutdown) | |
797 | rtd->cpu_dai->ops.shutdown(substream); | |
798 | ||
799 | if (rtd->codec_dai->ops.shutdown) | |
800 | rtd->codec_dai->ops.shutdown(substream); | |
801 | ||
802 | if (machine->ops && machine->ops->shutdown) | |
803 | machine->ops->shutdown(substream); | |
804 | ||
805 | if (platform->pcm_ops->close) | |
806 | platform->pcm_ops->close(substream); | |
807 | rtd->cpu_dai->runtime = NULL; | |
808 | ||
809 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
810 | /* start delayed pop wq here for playback streams */ | |
811 | rtd->codec_dai->pop_wait = 1; | |
4bb09523 | 812 | schedule_delayed_work(&socdev->delayed_work, |
db2a4165 FM |
813 | msecs_to_jiffies(pmdown_time)); |
814 | } else { | |
815 | /* capture streams can be powered down now */ | |
816 | snd_soc_dapm_stream_event(codec, rtd->codec_dai->capture.stream_name, | |
817 | SND_SOC_DAPM_STREAM_STOP); | |
818 | ||
819 | if (codec->active == 0 && rtd->codec_dai->pop_wait == 0){ | |
820 | if (codec->dapm_event) | |
821 | codec->dapm_event(codec, SNDRV_CTL_POWER_D3hot); | |
822 | } | |
823 | } | |
824 | ||
825 | mutex_unlock(&pcm_mutex); | |
826 | return 0; | |
827 | } | |
828 | ||
829 | /* | |
830 | * Called by ALSA when the PCM substream is prepared, can set format, sample | |
831 | * rate, etc. This function is non atomic and can be called multiple times, | |
832 | * it can refer to the runtime info. | |
833 | */ | |
834 | static int soc_pcm_prepare(struct snd_pcm_substream *substream) | |
835 | { | |
836 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
837 | struct snd_soc_device *socdev = rtd->socdev; | |
838 | struct snd_soc_platform *platform = socdev->platform; | |
839 | struct snd_soc_codec *codec = socdev->codec; | |
840 | int ret = 0; | |
841 | ||
842 | mutex_lock(&pcm_mutex); | |
843 | if (platform->pcm_ops->prepare) { | |
844 | ret = platform->pcm_ops->prepare(substream); | |
a71a468a LG |
845 | if (ret < 0) { |
846 | printk(KERN_ERR "asoc: platform prepare error\n"); | |
db2a4165 | 847 | goto out; |
a71a468a | 848 | } |
db2a4165 FM |
849 | } |
850 | ||
851 | if (rtd->codec_dai->ops.prepare) { | |
852 | ret = rtd->codec_dai->ops.prepare(substream); | |
a71a468a LG |
853 | if (ret < 0) { |
854 | printk(KERN_ERR "asoc: codec DAI prepare error\n"); | |
db2a4165 | 855 | goto out; |
a71a468a | 856 | } |
db2a4165 FM |
857 | } |
858 | ||
859 | if (rtd->cpu_dai->ops.prepare) | |
860 | ret = rtd->cpu_dai->ops.prepare(substream); | |
861 | ||
862 | /* we only want to start a DAPM playback stream if we are not waiting | |
863 | * on an existing one stopping */ | |
864 | if (rtd->codec_dai->pop_wait) { | |
865 | /* we are waiting for the delayed work to start */ | |
866 | if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) | |
867 | snd_soc_dapm_stream_event(codec, | |
868 | rtd->codec_dai->capture.stream_name, | |
869 | SND_SOC_DAPM_STREAM_START); | |
870 | else { | |
871 | rtd->codec_dai->pop_wait = 0; | |
4484bb2e | 872 | cancel_delayed_work(&socdev->delayed_work); |
db2a4165 FM |
873 | if (rtd->codec_dai->digital_mute) |
874 | rtd->codec_dai->digital_mute(codec, rtd->codec_dai, 0); | |
875 | } | |
876 | } else { | |
877 | /* no delayed work - do we need to power up codec */ | |
878 | if (codec->dapm_state != SNDRV_CTL_POWER_D0) { | |
879 | ||
880 | if (codec->dapm_event) | |
881 | codec->dapm_event(codec, SNDRV_CTL_POWER_D1); | |
882 | ||
883 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
884 | snd_soc_dapm_stream_event(codec, | |
885 | rtd->codec_dai->playback.stream_name, | |
886 | SND_SOC_DAPM_STREAM_START); | |
887 | else | |
888 | snd_soc_dapm_stream_event(codec, | |
889 | rtd->codec_dai->capture.stream_name, | |
890 | SND_SOC_DAPM_STREAM_START); | |
891 | ||
892 | if (codec->dapm_event) | |
893 | codec->dapm_event(codec, SNDRV_CTL_POWER_D0); | |
894 | if (rtd->codec_dai->digital_mute) | |
895 | rtd->codec_dai->digital_mute(codec, rtd->codec_dai, 0); | |
896 | ||
897 | } else { | |
898 | /* codec already powered - power on widgets */ | |
899 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
900 | snd_soc_dapm_stream_event(codec, | |
901 | rtd->codec_dai->playback.stream_name, | |
902 | SND_SOC_DAPM_STREAM_START); | |
903 | else | |
904 | snd_soc_dapm_stream_event(codec, | |
905 | rtd->codec_dai->capture.stream_name, | |
906 | SND_SOC_DAPM_STREAM_START); | |
907 | if (rtd->codec_dai->digital_mute) | |
908 | rtd->codec_dai->digital_mute(codec, rtd->codec_dai, 0); | |
909 | } | |
910 | } | |
911 | ||
912 | out: | |
913 | mutex_unlock(&pcm_mutex); | |
914 | return ret; | |
915 | } | |
916 | ||
917 | /* | |
918 | * Called by ALSA when the hardware params are set by application. This | |
919 | * function can also be called multiple times and can allocate buffers | |
920 | * (using snd_pcm_lib_* ). It's non-atomic. | |
921 | */ | |
922 | static int soc_pcm_hw_params(struct snd_pcm_substream *substream, | |
923 | struct snd_pcm_hw_params *params) | |
924 | { | |
925 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
926 | struct snd_soc_device *socdev = rtd->socdev; | |
927 | struct snd_soc_platform *platform = socdev->platform; | |
928 | struct snd_soc_machine *machine = socdev->machine; | |
929 | int ret = 0; | |
930 | ||
931 | mutex_lock(&pcm_mutex); | |
932 | ||
933 | /* we don't need to match any AC97 params */ | |
934 | if (rtd->cpu_dai->type != SND_SOC_DAI_AC97) { | |
935 | ret = soc_hw_match_params(substream, params); | |
936 | if (ret < 0) | |
937 | goto out; | |
938 | } else { | |
939 | struct snd_soc_clock_info clk_info; | |
940 | clk_info.rate = params_rate(params); | |
941 | ret = soc_get_mclk(rtd, &clk_info); | |
942 | if (ret < 0) | |
943 | goto out; | |
944 | } | |
945 | ||
946 | if (rtd->codec_dai->ops.hw_params) { | |
947 | ret = rtd->codec_dai->ops.hw_params(substream, params); | |
948 | if (ret < 0) { | |
949 | printk(KERN_ERR "asoc: can't set codec %s hw params\n", | |
950 | rtd->codec_dai->name); | |
951 | goto out; | |
952 | } | |
953 | } | |
954 | ||
955 | if (rtd->cpu_dai->ops.hw_params) { | |
956 | ret = rtd->cpu_dai->ops.hw_params(substream, params); | |
957 | if (ret < 0) { | |
958 | printk(KERN_ERR "asoc: can't set interface %s hw params\n", | |
959 | rtd->cpu_dai->name); | |
960 | goto interface_err; | |
961 | } | |
962 | } | |
963 | ||
964 | if (platform->pcm_ops->hw_params) { | |
965 | ret = platform->pcm_ops->hw_params(substream, params); | |
966 | if (ret < 0) { | |
967 | printk(KERN_ERR "asoc: can't set platform %s hw params\n", | |
968 | platform->name); | |
969 | goto platform_err; | |
970 | } | |
971 | } | |
972 | ||
973 | if (machine->ops && machine->ops->hw_params) { | |
974 | ret = machine->ops->hw_params(substream, params); | |
975 | if (ret < 0) { | |
976 | printk(KERN_ERR "asoc: machine hw_params failed\n"); | |
977 | goto machine_err; | |
978 | } | |
979 | } | |
980 | ||
981 | out: | |
982 | mutex_unlock(&pcm_mutex); | |
983 | return ret; | |
984 | ||
985 | machine_err: | |
986 | if (platform->pcm_ops->hw_free) | |
987 | platform->pcm_ops->hw_free(substream); | |
988 | ||
989 | platform_err: | |
990 | if (rtd->cpu_dai->ops.hw_free) | |
991 | rtd->cpu_dai->ops.hw_free(substream); | |
992 | ||
993 | interface_err: | |
994 | if (rtd->codec_dai->ops.hw_free) | |
995 | rtd->codec_dai->ops.hw_free(substream); | |
996 | ||
997 | mutex_unlock(&pcm_mutex); | |
998 | return ret; | |
999 | } | |
1000 | ||
1001 | /* | |
1002 | * Free's resources allocated by hw_params, can be called multiple times | |
1003 | */ | |
1004 | static int soc_pcm_hw_free(struct snd_pcm_substream *substream) | |
1005 | { | |
1006 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
1007 | struct snd_soc_device *socdev = rtd->socdev; | |
1008 | struct snd_soc_platform *platform = socdev->platform; | |
1009 | struct snd_soc_codec *codec = socdev->codec; | |
1010 | struct snd_soc_machine *machine = socdev->machine; | |
1011 | ||
1012 | mutex_lock(&pcm_mutex); | |
1013 | ||
1014 | /* apply codec digital mute */ | |
1015 | if (!codec->active && rtd->codec_dai->digital_mute) | |
1016 | rtd->codec_dai->digital_mute(codec, rtd->codec_dai, 1); | |
1017 | ||
1018 | /* free any machine hw params */ | |
1019 | if (machine->ops && machine->ops->hw_free) | |
1020 | machine->ops->hw_free(substream); | |
1021 | ||
1022 | /* free any DMA resources */ | |
1023 | if (platform->pcm_ops->hw_free) | |
1024 | platform->pcm_ops->hw_free(substream); | |
1025 | ||
1026 | /* now free hw params for the DAI's */ | |
1027 | if (rtd->codec_dai->ops.hw_free) | |
1028 | rtd->codec_dai->ops.hw_free(substream); | |
1029 | ||
1030 | if (rtd->cpu_dai->ops.hw_free) | |
1031 | rtd->cpu_dai->ops.hw_free(substream); | |
1032 | ||
1033 | mutex_unlock(&pcm_mutex); | |
1034 | return 0; | |
1035 | } | |
1036 | ||
1037 | static int soc_pcm_trigger(struct snd_pcm_substream *substream, int cmd) | |
1038 | { | |
1039 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
1040 | struct snd_soc_device *socdev = rtd->socdev; | |
1041 | struct snd_soc_platform *platform = socdev->platform; | |
1042 | int ret; | |
1043 | ||
1044 | if (rtd->codec_dai->ops.trigger) { | |
1045 | ret = rtd->codec_dai->ops.trigger(substream, cmd); | |
1046 | if (ret < 0) | |
1047 | return ret; | |
1048 | } | |
1049 | ||
1050 | if (platform->pcm_ops->trigger) { | |
1051 | ret = platform->pcm_ops->trigger(substream, cmd); | |
1052 | if (ret < 0) | |
1053 | return ret; | |
1054 | } | |
1055 | ||
1056 | if (rtd->cpu_dai->ops.trigger) { | |
1057 | ret = rtd->cpu_dai->ops.trigger(substream, cmd); | |
1058 | if (ret < 0) | |
1059 | return ret; | |
1060 | } | |
1061 | return 0; | |
1062 | } | |
1063 | ||
1064 | /* ASoC PCM operations */ | |
1065 | static struct snd_pcm_ops soc_pcm_ops = { | |
1066 | .open = soc_pcm_open, | |
1067 | .close = soc_codec_close, | |
1068 | .hw_params = soc_pcm_hw_params, | |
1069 | .hw_free = soc_pcm_hw_free, | |
1070 | .prepare = soc_pcm_prepare, | |
1071 | .trigger = soc_pcm_trigger, | |
1072 | }; | |
1073 | ||
1074 | #ifdef CONFIG_PM | |
1075 | /* powers down audio subsystem for suspend */ | |
1076 | static int soc_suspend(struct platform_device *pdev, pm_message_t state) | |
1077 | { | |
1078 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
1079 | struct snd_soc_machine *machine = socdev->machine; | |
1080 | struct snd_soc_platform *platform = socdev->platform; | |
1081 | struct snd_soc_codec_device *codec_dev = socdev->codec_dev; | |
1082 | struct snd_soc_codec *codec = socdev->codec; | |
1083 | int i; | |
1084 | ||
1085 | /* mute any active DAC's */ | |
1086 | for(i = 0; i < machine->num_links; i++) { | |
1087 | struct snd_soc_codec_dai *dai = machine->dai_link[i].codec_dai; | |
1088 | if (dai->digital_mute && dai->playback.active) | |
1089 | dai->digital_mute(codec, dai, 1); | |
1090 | } | |
1091 | ||
1092 | if (machine->suspend_pre) | |
1093 | machine->suspend_pre(pdev, state); | |
1094 | ||
1095 | for(i = 0; i < machine->num_links; i++) { | |
1096 | struct snd_soc_cpu_dai *cpu_dai = machine->dai_link[i].cpu_dai; | |
1097 | if (cpu_dai->suspend && cpu_dai->type != SND_SOC_DAI_AC97) | |
1098 | cpu_dai->suspend(pdev, cpu_dai); | |
1099 | if (platform->suspend) | |
1100 | platform->suspend(pdev, cpu_dai); | |
1101 | } | |
1102 | ||
1103 | /* close any waiting streams and save state */ | |
4bb09523 | 1104 | flush_scheduled_work(); |
db2a4165 FM |
1105 | codec->suspend_dapm_state = codec->dapm_state; |
1106 | ||
1107 | for(i = 0; i < codec->num_dai; i++) { | |
1108 | char *stream = codec->dai[i].playback.stream_name; | |
1109 | if (stream != NULL) | |
1110 | snd_soc_dapm_stream_event(codec, stream, | |
1111 | SND_SOC_DAPM_STREAM_SUSPEND); | |
1112 | stream = codec->dai[i].capture.stream_name; | |
1113 | if (stream != NULL) | |
1114 | snd_soc_dapm_stream_event(codec, stream, | |
1115 | SND_SOC_DAPM_STREAM_SUSPEND); | |
1116 | } | |
1117 | ||
1118 | if (codec_dev->suspend) | |
1119 | codec_dev->suspend(pdev, state); | |
1120 | ||
1121 | for(i = 0; i < machine->num_links; i++) { | |
1122 | struct snd_soc_cpu_dai *cpu_dai = machine->dai_link[i].cpu_dai; | |
1123 | if (cpu_dai->suspend && cpu_dai->type == SND_SOC_DAI_AC97) | |
1124 | cpu_dai->suspend(pdev, cpu_dai); | |
1125 | } | |
1126 | ||
1127 | if (machine->suspend_post) | |
1128 | machine->suspend_post(pdev, state); | |
1129 | ||
1130 | return 0; | |
1131 | } | |
1132 | ||
1133 | /* powers up audio subsystem after a suspend */ | |
1134 | static int soc_resume(struct platform_device *pdev) | |
1135 | { | |
1136 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
1137 | struct snd_soc_machine *machine = socdev->machine; | |
1138 | struct snd_soc_platform *platform = socdev->platform; | |
1139 | struct snd_soc_codec_device *codec_dev = socdev->codec_dev; | |
1140 | struct snd_soc_codec *codec = socdev->codec; | |
1141 | int i; | |
1142 | ||
1143 | if (machine->resume_pre) | |
1144 | machine->resume_pre(pdev); | |
1145 | ||
1146 | for(i = 0; i < machine->num_links; i++) { | |
1147 | struct snd_soc_cpu_dai *cpu_dai = machine->dai_link[i].cpu_dai; | |
1148 | if (cpu_dai->resume && cpu_dai->type == SND_SOC_DAI_AC97) | |
1149 | cpu_dai->resume(pdev, cpu_dai); | |
1150 | } | |
1151 | ||
1152 | if (codec_dev->resume) | |
1153 | codec_dev->resume(pdev); | |
1154 | ||
1155 | for(i = 0; i < codec->num_dai; i++) { | |
1156 | char* stream = codec->dai[i].playback.stream_name; | |
1157 | if (stream != NULL) | |
1158 | snd_soc_dapm_stream_event(codec, stream, | |
1159 | SND_SOC_DAPM_STREAM_RESUME); | |
1160 | stream = codec->dai[i].capture.stream_name; | |
1161 | if (stream != NULL) | |
1162 | snd_soc_dapm_stream_event(codec, stream, | |
1163 | SND_SOC_DAPM_STREAM_RESUME); | |
1164 | } | |
1165 | ||
1166 | /* unmute any active DAC's */ | |
1167 | for(i = 0; i < machine->num_links; i++) { | |
1168 | struct snd_soc_codec_dai *dai = machine->dai_link[i].codec_dai; | |
1169 | if (dai->digital_mute && dai->playback.active) | |
1170 | dai->digital_mute(codec, dai, 0); | |
1171 | } | |
1172 | ||
1173 | for(i = 0; i < machine->num_links; i++) { | |
1174 | struct snd_soc_cpu_dai *cpu_dai = machine->dai_link[i].cpu_dai; | |
1175 | if (cpu_dai->resume && cpu_dai->type != SND_SOC_DAI_AC97) | |
1176 | cpu_dai->resume(pdev, cpu_dai); | |
1177 | if (platform->resume) | |
1178 | platform->resume(pdev, cpu_dai); | |
1179 | } | |
1180 | ||
1181 | if (machine->resume_post) | |
1182 | machine->resume_post(pdev); | |
1183 | ||
1184 | return 0; | |
1185 | } | |
1186 | ||
1187 | #else | |
1188 | #define soc_suspend NULL | |
1189 | #define soc_resume NULL | |
1190 | #endif | |
1191 | ||
1192 | /* probes a new socdev */ | |
1193 | static int soc_probe(struct platform_device *pdev) | |
1194 | { | |
1195 | int ret = 0, i; | |
1196 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
1197 | struct snd_soc_machine *machine = socdev->machine; | |
1198 | struct snd_soc_platform *platform = socdev->platform; | |
1199 | struct snd_soc_codec_device *codec_dev = socdev->codec_dev; | |
1200 | ||
1201 | if (machine->probe) { | |
1202 | ret = machine->probe(pdev); | |
1203 | if(ret < 0) | |
1204 | return ret; | |
1205 | } | |
1206 | ||
1207 | for (i = 0; i < machine->num_links; i++) { | |
1208 | struct snd_soc_cpu_dai *cpu_dai = machine->dai_link[i].cpu_dai; | |
1209 | if (cpu_dai->probe) { | |
1210 | ret = cpu_dai->probe(pdev); | |
1211 | if(ret < 0) | |
1212 | goto cpu_dai_err; | |
1213 | } | |
1214 | } | |
1215 | ||
1216 | if (codec_dev->probe) { | |
1217 | ret = codec_dev->probe(pdev); | |
1218 | if(ret < 0) | |
1219 | goto cpu_dai_err; | |
1220 | } | |
1221 | ||
1222 | if (platform->probe) { | |
1223 | ret = platform->probe(pdev); | |
1224 | if(ret < 0) | |
1225 | goto platform_err; | |
1226 | } | |
1227 | ||
1228 | /* DAPM stream work */ | |
4484bb2e | 1229 | INIT_DELAYED_WORK(&socdev->delayed_work, close_delayed_work); |
db2a4165 FM |
1230 | return 0; |
1231 | ||
db2a4165 FM |
1232 | platform_err: |
1233 | if (codec_dev->remove) | |
1234 | codec_dev->remove(pdev); | |
1235 | ||
1236 | cpu_dai_err: | |
1237 | for (i--; i > 0; i--) { | |
1238 | struct snd_soc_cpu_dai *cpu_dai = machine->dai_link[i].cpu_dai; | |
1239 | if (cpu_dai->remove) | |
1240 | cpu_dai->remove(pdev); | |
1241 | } | |
1242 | ||
1243 | if (machine->remove) | |
1244 | machine->remove(pdev); | |
1245 | ||
1246 | return ret; | |
1247 | } | |
1248 | ||
1249 | /* removes a socdev */ | |
1250 | static int soc_remove(struct platform_device *pdev) | |
1251 | { | |
1252 | int i; | |
1253 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); | |
1254 | struct snd_soc_machine *machine = socdev->machine; | |
1255 | struct snd_soc_platform *platform = socdev->platform; | |
1256 | struct snd_soc_codec_device *codec_dev = socdev->codec_dev; | |
1257 | ||
db2a4165 FM |
1258 | if (platform->remove) |
1259 | platform->remove(pdev); | |
1260 | ||
1261 | if (codec_dev->remove) | |
1262 | codec_dev->remove(pdev); | |
1263 | ||
1264 | for (i = 0; i < machine->num_links; i++) { | |
1265 | struct snd_soc_cpu_dai *cpu_dai = machine->dai_link[i].cpu_dai; | |
1266 | if (cpu_dai->remove) | |
1267 | cpu_dai->remove(pdev); | |
1268 | } | |
1269 | ||
1270 | if (machine->remove) | |
1271 | machine->remove(pdev); | |
1272 | ||
1273 | return 0; | |
1274 | } | |
1275 | ||
1276 | /* ASoC platform driver */ | |
1277 | static struct platform_driver soc_driver = { | |
1278 | .driver = { | |
1279 | .name = "soc-audio", | |
1280 | }, | |
1281 | .probe = soc_probe, | |
1282 | .remove = soc_remove, | |
1283 | .suspend = soc_suspend, | |
1284 | .resume = soc_resume, | |
1285 | }; | |
1286 | ||
1287 | /* create a new pcm */ | |
1288 | static int soc_new_pcm(struct snd_soc_device *socdev, | |
1289 | struct snd_soc_dai_link *dai_link, int num) | |
1290 | { | |
1291 | struct snd_soc_codec *codec = socdev->codec; | |
1292 | struct snd_soc_codec_dai *codec_dai = dai_link->codec_dai; | |
1293 | struct snd_soc_cpu_dai *cpu_dai = dai_link->cpu_dai; | |
1294 | struct snd_soc_pcm_runtime *rtd; | |
1295 | struct snd_pcm *pcm; | |
1296 | char new_name[64]; | |
1297 | int ret = 0, playback = 0, capture = 0; | |
1298 | ||
1299 | rtd = kzalloc(sizeof(struct snd_soc_pcm_runtime), GFP_KERNEL); | |
1300 | if (rtd == NULL) | |
1301 | return -ENOMEM; | |
1302 | rtd->cpu_dai = cpu_dai; | |
1303 | rtd->codec_dai = codec_dai; | |
1304 | rtd->socdev = socdev; | |
1305 | ||
1306 | /* check client and interface hw capabilities */ | |
1307 | sprintf(new_name, "%s %s-%s-%d",dai_link->stream_name, codec_dai->name, | |
1308 | get_dai_name(cpu_dai->type), num); | |
1309 | ||
1310 | if (codec_dai->playback.channels_min) | |
1311 | playback = 1; | |
1312 | if (codec_dai->capture.channels_min) | |
1313 | capture = 1; | |
1314 | ||
1315 | ret = snd_pcm_new(codec->card, new_name, codec->pcm_devs++, playback, | |
1316 | capture, &pcm); | |
1317 | if (ret < 0) { | |
1318 | printk(KERN_ERR "asoc: can't create pcm for codec %s\n", codec->name); | |
1319 | kfree(rtd); | |
1320 | return ret; | |
1321 | } | |
1322 | ||
1323 | pcm->private_data = rtd; | |
1324 | soc_pcm_ops.mmap = socdev->platform->pcm_ops->mmap; | |
1325 | soc_pcm_ops.pointer = socdev->platform->pcm_ops->pointer; | |
1326 | soc_pcm_ops.ioctl = socdev->platform->pcm_ops->ioctl; | |
1327 | soc_pcm_ops.copy = socdev->platform->pcm_ops->copy; | |
1328 | soc_pcm_ops.silence = socdev->platform->pcm_ops->silence; | |
1329 | soc_pcm_ops.ack = socdev->platform->pcm_ops->ack; | |
1330 | soc_pcm_ops.page = socdev->platform->pcm_ops->page; | |
1331 | ||
1332 | if (playback) | |
1333 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &soc_pcm_ops); | |
1334 | ||
1335 | if (capture) | |
1336 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &soc_pcm_ops); | |
1337 | ||
1338 | ret = socdev->platform->pcm_new(codec->card, codec_dai, pcm); | |
1339 | if (ret < 0) { | |
1340 | printk(KERN_ERR "asoc: platform pcm constructor failed\n"); | |
1341 | kfree(rtd); | |
1342 | return ret; | |
1343 | } | |
1344 | ||
1345 | pcm->private_free = socdev->platform->pcm_free; | |
1346 | printk(KERN_INFO "asoc: %s <-> %s mapping ok\n", codec_dai->name, | |
1347 | cpu_dai->name); | |
1348 | return ret; | |
1349 | } | |
1350 | ||
1351 | /* codec register dump */ | |
1352 | static ssize_t codec_reg_show(struct device *dev, | |
1353 | struct device_attribute *attr, char *buf) | |
1354 | { | |
1355 | struct snd_soc_device *devdata = dev_get_drvdata(dev); | |
1356 | struct snd_soc_codec *codec = devdata->codec; | |
1357 | int i, step = 1, count = 0; | |
1358 | ||
1359 | if (!codec->reg_cache_size) | |
1360 | return 0; | |
1361 | ||
1362 | if (codec->reg_cache_step) | |
1363 | step = codec->reg_cache_step; | |
1364 | ||
1365 | count += sprintf(buf, "%s registers\n", codec->name); | |
1366 | for(i = 0; i < codec->reg_cache_size; i += step) | |
1367 | count += sprintf(buf + count, "%2x: %4x\n", i, codec->read(codec, i)); | |
1368 | ||
1369 | return count; | |
1370 | } | |
1371 | static DEVICE_ATTR(codec_reg, 0444, codec_reg_show, NULL); | |
1372 | ||
1373 | /** | |
1374 | * snd_soc_new_ac97_codec - initailise AC97 device | |
1375 | * @codec: audio codec | |
1376 | * @ops: AC97 bus operations | |
1377 | * @num: AC97 codec number | |
1378 | * | |
1379 | * Initialises AC97 codec resources for use by ad-hoc devices only. | |
1380 | */ | |
1381 | int snd_soc_new_ac97_codec(struct snd_soc_codec *codec, | |
1382 | struct snd_ac97_bus_ops *ops, int num) | |
1383 | { | |
1384 | mutex_lock(&codec->mutex); | |
1385 | ||
1386 | codec->ac97 = kzalloc(sizeof(struct snd_ac97), GFP_KERNEL); | |
1387 | if (codec->ac97 == NULL) { | |
1388 | mutex_unlock(&codec->mutex); | |
1389 | return -ENOMEM; | |
1390 | } | |
1391 | ||
1392 | codec->ac97->bus = kzalloc(sizeof(struct snd_ac97_bus), GFP_KERNEL); | |
1393 | if (codec->ac97->bus == NULL) { | |
1394 | kfree(codec->ac97); | |
1395 | codec->ac97 = NULL; | |
1396 | mutex_unlock(&codec->mutex); | |
1397 | return -ENOMEM; | |
1398 | } | |
1399 | ||
1400 | codec->ac97->bus->ops = ops; | |
1401 | codec->ac97->num = num; | |
1402 | mutex_unlock(&codec->mutex); | |
1403 | return 0; | |
1404 | } | |
1405 | EXPORT_SYMBOL_GPL(snd_soc_new_ac97_codec); | |
1406 | ||
1407 | /** | |
1408 | * snd_soc_free_ac97_codec - free AC97 codec device | |
1409 | * @codec: audio codec | |
1410 | * | |
1411 | * Frees AC97 codec device resources. | |
1412 | */ | |
1413 | void snd_soc_free_ac97_codec(struct snd_soc_codec *codec) | |
1414 | { | |
1415 | mutex_lock(&codec->mutex); | |
1416 | kfree(codec->ac97->bus); | |
1417 | kfree(codec->ac97); | |
1418 | codec->ac97 = NULL; | |
1419 | mutex_unlock(&codec->mutex); | |
1420 | } | |
1421 | EXPORT_SYMBOL_GPL(snd_soc_free_ac97_codec); | |
1422 | ||
1423 | /** | |
1424 | * snd_soc_update_bits - update codec register bits | |
1425 | * @codec: audio codec | |
1426 | * @reg: codec register | |
1427 | * @mask: register mask | |
1428 | * @value: new value | |
1429 | * | |
1430 | * Writes new register value. | |
1431 | * | |
1432 | * Returns 1 for change else 0. | |
1433 | */ | |
1434 | int snd_soc_update_bits(struct snd_soc_codec *codec, unsigned short reg, | |
1435 | unsigned short mask, unsigned short value) | |
1436 | { | |
1437 | int change; | |
1438 | unsigned short old, new; | |
1439 | ||
1440 | mutex_lock(&io_mutex); | |
1441 | old = snd_soc_read(codec, reg); | |
1442 | new = (old & ~mask) | value; | |
1443 | change = old != new; | |
1444 | if (change) | |
1445 | snd_soc_write(codec, reg, new); | |
1446 | ||
1447 | mutex_unlock(&io_mutex); | |
1448 | return change; | |
1449 | } | |
1450 | EXPORT_SYMBOL_GPL(snd_soc_update_bits); | |
1451 | ||
1452 | /** | |
1453 | * snd_soc_test_bits - test register for change | |
1454 | * @codec: audio codec | |
1455 | * @reg: codec register | |
1456 | * @mask: register mask | |
1457 | * @value: new value | |
1458 | * | |
1459 | * Tests a register with a new value and checks if the new value is | |
1460 | * different from the old value. | |
1461 | * | |
1462 | * Returns 1 for change else 0. | |
1463 | */ | |
1464 | int snd_soc_test_bits(struct snd_soc_codec *codec, unsigned short reg, | |
1465 | unsigned short mask, unsigned short value) | |
1466 | { | |
1467 | int change; | |
1468 | unsigned short old, new; | |
1469 | ||
1470 | mutex_lock(&io_mutex); | |
1471 | old = snd_soc_read(codec, reg); | |
1472 | new = (old & ~mask) | value; | |
1473 | change = old != new; | |
1474 | mutex_unlock(&io_mutex); | |
1475 | ||
1476 | return change; | |
1477 | } | |
1478 | EXPORT_SYMBOL_GPL(snd_soc_test_bits); | |
1479 | ||
1480 | /** | |
1481 | * snd_soc_get_rate - get int sample rate | |
1482 | * @hwpcmrate: the hardware pcm rate | |
1483 | * | |
1484 | * Returns the audio rate integaer value, else 0. | |
1485 | */ | |
1486 | int snd_soc_get_rate(int hwpcmrate) | |
1487 | { | |
1488 | int rate = ffs(hwpcmrate) - 1; | |
1489 | ||
1490 | if (rate > ARRAY_SIZE(rates)) | |
1491 | return 0; | |
1492 | return rates[rate]; | |
1493 | } | |
1494 | EXPORT_SYMBOL_GPL(snd_soc_get_rate); | |
1495 | ||
1496 | /** | |
1497 | * snd_soc_new_pcms - create new sound card and pcms | |
1498 | * @socdev: the SoC audio device | |
1499 | * | |
1500 | * Create a new sound card based upon the codec and interface pcms. | |
1501 | * | |
1502 | * Returns 0 for success, else error. | |
1503 | */ | |
1504 | int snd_soc_new_pcms(struct snd_soc_device *socdev, int idx, const char * xid) | |
1505 | { | |
1506 | struct snd_soc_codec *codec = socdev->codec; | |
1507 | struct snd_soc_machine *machine = socdev->machine; | |
1508 | int ret = 0, i; | |
1509 | ||
1510 | mutex_lock(&codec->mutex); | |
1511 | ||
1512 | /* register a sound card */ | |
1513 | codec->card = snd_card_new(idx, xid, codec->owner, 0); | |
1514 | if (!codec->card) { | |
1515 | printk(KERN_ERR "asoc: can't create sound card for codec %s\n", | |
1516 | codec->name); | |
1517 | mutex_unlock(&codec->mutex); | |
1518 | return -ENODEV; | |
1519 | } | |
1520 | ||
1521 | codec->card->dev = socdev->dev; | |
1522 | codec->card->private_data = codec; | |
1523 | strncpy(codec->card->driver, codec->name, sizeof(codec->card->driver)); | |
1524 | ||
1525 | /* create the pcms */ | |
1526 | for(i = 0; i < machine->num_links; i++) { | |
1527 | ret = soc_new_pcm(socdev, &machine->dai_link[i], i); | |
1528 | if (ret < 0) { | |
1529 | printk(KERN_ERR "asoc: can't create pcm %s\n", | |
1530 | machine->dai_link[i].stream_name); | |
1531 | mutex_unlock(&codec->mutex); | |
1532 | return ret; | |
1533 | } | |
1534 | } | |
1535 | ||
1536 | mutex_unlock(&codec->mutex); | |
1537 | return ret; | |
1538 | } | |
1539 | EXPORT_SYMBOL_GPL(snd_soc_new_pcms); | |
1540 | ||
1541 | /** | |
1542 | * snd_soc_register_card - register sound card | |
1543 | * @socdev: the SoC audio device | |
1544 | * | |
1545 | * Register a SoC sound card. Also registers an AC97 device if the | |
1546 | * codec is AC97 for ad hoc devices. | |
1547 | * | |
1548 | * Returns 0 for success, else error. | |
1549 | */ | |
1550 | int snd_soc_register_card(struct snd_soc_device *socdev) | |
1551 | { | |
1552 | struct snd_soc_codec *codec = socdev->codec; | |
1553 | struct snd_soc_machine *machine = socdev->machine; | |
12e74f7d | 1554 | int ret = 0, i, ac97 = 0, err = 0; |
db2a4165 FM |
1555 | |
1556 | mutex_lock(&codec->mutex); | |
1557 | for(i = 0; i < machine->num_links; i++) { | |
12e74f7d LG |
1558 | if (socdev->machine->dai_link[i].init) { |
1559 | err = socdev->machine->dai_link[i].init(codec); | |
1560 | if (err < 0) { | |
1561 | printk(KERN_ERR "asoc: failed to init %s\n", | |
1562 | socdev->machine->dai_link[i].stream_name); | |
1563 | continue; | |
1564 | } | |
1565 | } | |
db2a4165 FM |
1566 | if (socdev->machine->dai_link[i].cpu_dai->type == SND_SOC_DAI_AC97) |
1567 | ac97 = 1; | |
1568 | } | |
1569 | snprintf(codec->card->shortname, sizeof(codec->card->shortname), | |
1570 | "%s", machine->name); | |
1571 | snprintf(codec->card->longname, sizeof(codec->card->longname), | |
1572 | "%s (%s)", machine->name, codec->name); | |
1573 | ||
1574 | ret = snd_card_register(codec->card); | |
1575 | if (ret < 0) { | |
1576 | printk(KERN_ERR "asoc: failed to register soundcard for codec %s\n", | |
1577 | codec->name); | |
12e74f7d | 1578 | goto out; |
db2a4165 FM |
1579 | } |
1580 | ||
1581 | #ifdef CONFIG_SND_SOC_AC97_BUS | |
12e74f7d LG |
1582 | if (ac97) { |
1583 | ret = soc_ac97_dev_register(codec); | |
1584 | if (ret < 0) { | |
1585 | printk(KERN_ERR "asoc: AC97 device register failed\n"); | |
1586 | snd_card_free(codec->card); | |
1587 | goto out; | |
1588 | } | |
1589 | } | |
db2a4165 FM |
1590 | #endif |
1591 | ||
12e74f7d LG |
1592 | err = snd_soc_dapm_sys_add(socdev->dev); |
1593 | if (err < 0) | |
1594 | printk(KERN_WARNING "asoc: failed to add dapm sysfs entries\n"); | |
1595 | ||
1596 | err = device_create_file(socdev->dev, &dev_attr_codec_reg); | |
1597 | if (err < 0) | |
1598 | printk(KERN_WARNING "asoc: failed to add codec sysfs entries\n"); | |
1599 | out: | |
db2a4165 FM |
1600 | mutex_unlock(&codec->mutex); |
1601 | return ret; | |
1602 | } | |
1603 | EXPORT_SYMBOL_GPL(snd_soc_register_card); | |
1604 | ||
1605 | /** | |
1606 | * snd_soc_free_pcms - free sound card and pcms | |
1607 | * @socdev: the SoC audio device | |
1608 | * | |
1609 | * Frees sound card and pcms associated with the socdev. | |
1610 | * Also unregister the codec if it is an AC97 device. | |
1611 | */ | |
1612 | void snd_soc_free_pcms(struct snd_soc_device *socdev) | |
1613 | { | |
1614 | struct snd_soc_codec *codec = socdev->codec; | |
1615 | ||
1616 | mutex_lock(&codec->mutex); | |
1617 | #ifdef CONFIG_SND_SOC_AC97_BUS | |
1618 | if (codec->ac97) | |
1619 | soc_ac97_dev_unregister(codec); | |
1620 | #endif | |
1621 | ||
1622 | if (codec->card) | |
1623 | snd_card_free(codec->card); | |
1624 | device_remove_file(socdev->dev, &dev_attr_codec_reg); | |
1625 | mutex_unlock(&codec->mutex); | |
1626 | } | |
1627 | EXPORT_SYMBOL_GPL(snd_soc_free_pcms); | |
1628 | ||
1629 | /** | |
1630 | * snd_soc_set_runtime_hwparams - set the runtime hardware parameters | |
1631 | * @substream: the pcm substream | |
1632 | * @hw: the hardware parameters | |
1633 | * | |
1634 | * Sets the substream runtime hardware parameters. | |
1635 | */ | |
1636 | int snd_soc_set_runtime_hwparams(struct snd_pcm_substream *substream, | |
1637 | const struct snd_pcm_hardware *hw) | |
1638 | { | |
1639 | struct snd_pcm_runtime *runtime = substream->runtime; | |
1640 | runtime->hw.info = hw->info; | |
1641 | runtime->hw.formats = hw->formats; | |
1642 | runtime->hw.period_bytes_min = hw->period_bytes_min; | |
1643 | runtime->hw.period_bytes_max = hw->period_bytes_max; | |
1644 | runtime->hw.periods_min = hw->periods_min; | |
1645 | runtime->hw.periods_max = hw->periods_max; | |
1646 | runtime->hw.buffer_bytes_max = hw->buffer_bytes_max; | |
1647 | runtime->hw.fifo_size = hw->fifo_size; | |
1648 | return 0; | |
1649 | } | |
1650 | EXPORT_SYMBOL_GPL(snd_soc_set_runtime_hwparams); | |
1651 | ||
1652 | /** | |
1653 | * snd_soc_cnew - create new control | |
1654 | * @_template: control template | |
1655 | * @data: control private data | |
1656 | * @lnng_name: control long name | |
1657 | * | |
1658 | * Create a new mixer control from a template control. | |
1659 | * | |
1660 | * Returns 0 for success, else error. | |
1661 | */ | |
1662 | struct snd_kcontrol *snd_soc_cnew(const struct snd_kcontrol_new *_template, | |
1663 | void *data, char *long_name) | |
1664 | { | |
1665 | struct snd_kcontrol_new template; | |
1666 | ||
1667 | memcpy(&template, _template, sizeof(template)); | |
1668 | if (long_name) | |
1669 | template.name = long_name; | |
1670 | template.access = SNDRV_CTL_ELEM_ACCESS_READWRITE; | |
1671 | template.index = 0; | |
1672 | ||
1673 | return snd_ctl_new1(&template, data); | |
1674 | } | |
1675 | EXPORT_SYMBOL_GPL(snd_soc_cnew); | |
1676 | ||
1677 | /** | |
1678 | * snd_soc_info_enum_double - enumerated double mixer info callback | |
1679 | * @kcontrol: mixer control | |
1680 | * @uinfo: control element information | |
1681 | * | |
1682 | * Callback to provide information about a double enumerated | |
1683 | * mixer control. | |
1684 | * | |
1685 | * Returns 0 for success. | |
1686 | */ | |
1687 | int snd_soc_info_enum_double(struct snd_kcontrol *kcontrol, | |
1688 | struct snd_ctl_elem_info *uinfo) | |
1689 | { | |
1690 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
1691 | ||
1692 | uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED; | |
1693 | uinfo->count = e->shift_l == e->shift_r ? 1 : 2; | |
1694 | uinfo->value.enumerated.items = e->mask; | |
1695 | ||
1696 | if (uinfo->value.enumerated.item > e->mask - 1) | |
1697 | uinfo->value.enumerated.item = e->mask - 1; | |
1698 | strcpy(uinfo->value.enumerated.name, | |
1699 | e->texts[uinfo->value.enumerated.item]); | |
1700 | return 0; | |
1701 | } | |
1702 | EXPORT_SYMBOL_GPL(snd_soc_info_enum_double); | |
1703 | ||
1704 | /** | |
1705 | * snd_soc_get_enum_double - enumerated double mixer get callback | |
1706 | * @kcontrol: mixer control | |
1707 | * @uinfo: control element information | |
1708 | * | |
1709 | * Callback to get the value of a double enumerated mixer. | |
1710 | * | |
1711 | * Returns 0 for success. | |
1712 | */ | |
1713 | int snd_soc_get_enum_double(struct snd_kcontrol *kcontrol, | |
1714 | struct snd_ctl_elem_value *ucontrol) | |
1715 | { | |
1716 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
1717 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
1718 | unsigned short val, bitmask; | |
1719 | ||
1720 | for (bitmask = 1; bitmask < e->mask; bitmask <<= 1) | |
1721 | ; | |
1722 | val = snd_soc_read(codec, e->reg); | |
1723 | ucontrol->value.enumerated.item[0] = (val >> e->shift_l) & (bitmask - 1); | |
1724 | if (e->shift_l != e->shift_r) | |
1725 | ucontrol->value.enumerated.item[1] = | |
1726 | (val >> e->shift_r) & (bitmask - 1); | |
1727 | ||
1728 | return 0; | |
1729 | } | |
1730 | EXPORT_SYMBOL_GPL(snd_soc_get_enum_double); | |
1731 | ||
1732 | /** | |
1733 | * snd_soc_put_enum_double - enumerated double mixer put callback | |
1734 | * @kcontrol: mixer control | |
1735 | * @uinfo: control element information | |
1736 | * | |
1737 | * Callback to set the value of a double enumerated mixer. | |
1738 | * | |
1739 | * Returns 0 for success. | |
1740 | */ | |
1741 | int snd_soc_put_enum_double(struct snd_kcontrol *kcontrol, | |
1742 | struct snd_ctl_elem_value *ucontrol) | |
1743 | { | |
1744 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
1745 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
1746 | unsigned short val; | |
1747 | unsigned short mask, bitmask; | |
1748 | ||
1749 | for (bitmask = 1; bitmask < e->mask; bitmask <<= 1) | |
1750 | ; | |
1751 | if (ucontrol->value.enumerated.item[0] > e->mask - 1) | |
1752 | return -EINVAL; | |
1753 | val = ucontrol->value.enumerated.item[0] << e->shift_l; | |
1754 | mask = (bitmask - 1) << e->shift_l; | |
1755 | if (e->shift_l != e->shift_r) { | |
1756 | if (ucontrol->value.enumerated.item[1] > e->mask - 1) | |
1757 | return -EINVAL; | |
1758 | val |= ucontrol->value.enumerated.item[1] << e->shift_r; | |
1759 | mask |= (bitmask - 1) << e->shift_r; | |
1760 | } | |
1761 | ||
1762 | return snd_soc_update_bits(codec, e->reg, mask, val); | |
1763 | } | |
1764 | EXPORT_SYMBOL_GPL(snd_soc_put_enum_double); | |
1765 | ||
1766 | /** | |
1767 | * snd_soc_info_enum_ext - external enumerated single mixer info callback | |
1768 | * @kcontrol: mixer control | |
1769 | * @uinfo: control element information | |
1770 | * | |
1771 | * Callback to provide information about an external enumerated | |
1772 | * single mixer. | |
1773 | * | |
1774 | * Returns 0 for success. | |
1775 | */ | |
1776 | int snd_soc_info_enum_ext(struct snd_kcontrol *kcontrol, | |
1777 | struct snd_ctl_elem_info *uinfo) | |
1778 | { | |
1779 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
1780 | ||
1781 | uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED; | |
1782 | uinfo->count = 1; | |
1783 | uinfo->value.enumerated.items = e->mask; | |
1784 | ||
1785 | if (uinfo->value.enumerated.item > e->mask - 1) | |
1786 | uinfo->value.enumerated.item = e->mask - 1; | |
1787 | strcpy(uinfo->value.enumerated.name, | |
1788 | e->texts[uinfo->value.enumerated.item]); | |
1789 | return 0; | |
1790 | } | |
1791 | EXPORT_SYMBOL_GPL(snd_soc_info_enum_ext); | |
1792 | ||
1793 | /** | |
1794 | * snd_soc_info_volsw_ext - external single mixer info callback | |
1795 | * @kcontrol: mixer control | |
1796 | * @uinfo: control element information | |
1797 | * | |
1798 | * Callback to provide information about a single external mixer control. | |
1799 | * | |
1800 | * Returns 0 for success. | |
1801 | */ | |
1802 | int snd_soc_info_volsw_ext(struct snd_kcontrol *kcontrol, | |
1803 | struct snd_ctl_elem_info *uinfo) | |
1804 | { | |
1805 | int mask = kcontrol->private_value; | |
1806 | ||
1807 | uinfo->type = | |
1808 | mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER; | |
1809 | uinfo->count = 1; | |
1810 | uinfo->value.integer.min = 0; | |
1811 | uinfo->value.integer.max = mask; | |
1812 | return 0; | |
1813 | } | |
1814 | EXPORT_SYMBOL_GPL(snd_soc_info_volsw_ext); | |
1815 | ||
1816 | /** | |
1817 | * snd_soc_info_bool_ext - external single boolean mixer info callback | |
1818 | * @kcontrol: mixer control | |
1819 | * @uinfo: control element information | |
1820 | * | |
1821 | * Callback to provide information about a single boolean external mixer control. | |
1822 | * | |
1823 | * Returns 0 for success. | |
1824 | */ | |
1825 | int snd_soc_info_bool_ext(struct snd_kcontrol *kcontrol, | |
1826 | struct snd_ctl_elem_info *uinfo) | |
1827 | { | |
1828 | uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; | |
1829 | uinfo->count = 1; | |
1830 | uinfo->value.integer.min = 0; | |
1831 | uinfo->value.integer.max = 1; | |
1832 | return 0; | |
1833 | } | |
1834 | EXPORT_SYMBOL_GPL(snd_soc_info_bool_ext); | |
1835 | ||
1836 | /** | |
1837 | * snd_soc_info_volsw - single mixer info callback | |
1838 | * @kcontrol: mixer control | |
1839 | * @uinfo: control element information | |
1840 | * | |
1841 | * Callback to provide information about a single mixer control. | |
1842 | * | |
1843 | * Returns 0 for success. | |
1844 | */ | |
1845 | int snd_soc_info_volsw(struct snd_kcontrol *kcontrol, | |
1846 | struct snd_ctl_elem_info *uinfo) | |
1847 | { | |
1848 | int mask = (kcontrol->private_value >> 16) & 0xff; | |
1849 | int shift = (kcontrol->private_value >> 8) & 0x0f; | |
1850 | int rshift = (kcontrol->private_value >> 12) & 0x0f; | |
1851 | ||
1852 | uinfo->type = | |
1853 | mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER; | |
1854 | uinfo->count = shift == rshift ? 1 : 2; | |
1855 | uinfo->value.integer.min = 0; | |
1856 | uinfo->value.integer.max = mask; | |
1857 | return 0; | |
1858 | } | |
1859 | EXPORT_SYMBOL_GPL(snd_soc_info_volsw); | |
1860 | ||
1861 | /** | |
1862 | * snd_soc_get_volsw - single mixer get callback | |
1863 | * @kcontrol: mixer control | |
1864 | * @uinfo: control element information | |
1865 | * | |
1866 | * Callback to get the value of a single mixer control. | |
1867 | * | |
1868 | * Returns 0 for success. | |
1869 | */ | |
1870 | int snd_soc_get_volsw(struct snd_kcontrol *kcontrol, | |
1871 | struct snd_ctl_elem_value *ucontrol) | |
1872 | { | |
1873 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
1874 | int reg = kcontrol->private_value & 0xff; | |
1875 | int shift = (kcontrol->private_value >> 8) & 0x0f; | |
1876 | int rshift = (kcontrol->private_value >> 12) & 0x0f; | |
1877 | int mask = (kcontrol->private_value >> 16) & 0xff; | |
1878 | int invert = (kcontrol->private_value >> 24) & 0x01; | |
1879 | ||
1880 | ucontrol->value.integer.value[0] = | |
1881 | (snd_soc_read(codec, reg) >> shift) & mask; | |
1882 | if (shift != rshift) | |
1883 | ucontrol->value.integer.value[1] = | |
1884 | (snd_soc_read(codec, reg) >> rshift) & mask; | |
1885 | if (invert) { | |
1886 | ucontrol->value.integer.value[0] = | |
1887 | mask - ucontrol->value.integer.value[0]; | |
1888 | if (shift != rshift) | |
1889 | ucontrol->value.integer.value[1] = | |
1890 | mask - ucontrol->value.integer.value[1]; | |
1891 | } | |
1892 | ||
1893 | return 0; | |
1894 | } | |
1895 | EXPORT_SYMBOL_GPL(snd_soc_get_volsw); | |
1896 | ||
1897 | /** | |
1898 | * snd_soc_put_volsw - single mixer put callback | |
1899 | * @kcontrol: mixer control | |
1900 | * @uinfo: control element information | |
1901 | * | |
1902 | * Callback to set the value of a single mixer control. | |
1903 | * | |
1904 | * Returns 0 for success. | |
1905 | */ | |
1906 | int snd_soc_put_volsw(struct snd_kcontrol *kcontrol, | |
1907 | struct snd_ctl_elem_value *ucontrol) | |
1908 | { | |
1909 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
1910 | int reg = kcontrol->private_value & 0xff; | |
1911 | int shift = (kcontrol->private_value >> 8) & 0x0f; | |
1912 | int rshift = (kcontrol->private_value >> 12) & 0x0f; | |
1913 | int mask = (kcontrol->private_value >> 16) & 0xff; | |
1914 | int invert = (kcontrol->private_value >> 24) & 0x01; | |
1915 | int err; | |
1916 | unsigned short val, val2, val_mask; | |
1917 | ||
1918 | val = (ucontrol->value.integer.value[0] & mask); | |
1919 | if (invert) | |
1920 | val = mask - val; | |
1921 | val_mask = mask << shift; | |
1922 | val = val << shift; | |
1923 | if (shift != rshift) { | |
1924 | val2 = (ucontrol->value.integer.value[1] & mask); | |
1925 | if (invert) | |
1926 | val2 = mask - val2; | |
1927 | val_mask |= mask << rshift; | |
1928 | val |= val2 << rshift; | |
1929 | } | |
1930 | err = snd_soc_update_bits(codec, reg, val_mask, val); | |
1931 | return err; | |
1932 | } | |
1933 | EXPORT_SYMBOL_GPL(snd_soc_put_volsw); | |
1934 | ||
1935 | /** | |
1936 | * snd_soc_info_volsw_2r - double mixer info callback | |
1937 | * @kcontrol: mixer control | |
1938 | * @uinfo: control element information | |
1939 | * | |
1940 | * Callback to provide information about a double mixer control that | |
1941 | * spans 2 codec registers. | |
1942 | * | |
1943 | * Returns 0 for success. | |
1944 | */ | |
1945 | int snd_soc_info_volsw_2r(struct snd_kcontrol *kcontrol, | |
1946 | struct snd_ctl_elem_info *uinfo) | |
1947 | { | |
1948 | int mask = (kcontrol->private_value >> 12) & 0xff; | |
1949 | ||
1950 | uinfo->type = | |
1951 | mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER; | |
1952 | uinfo->count = 2; | |
1953 | uinfo->value.integer.min = 0; | |
1954 | uinfo->value.integer.max = mask; | |
1955 | return 0; | |
1956 | } | |
1957 | EXPORT_SYMBOL_GPL(snd_soc_info_volsw_2r); | |
1958 | ||
1959 | /** | |
1960 | * snd_soc_get_volsw_2r - double mixer get callback | |
1961 | * @kcontrol: mixer control | |
1962 | * @uinfo: control element information | |
1963 | * | |
1964 | * Callback to get the value of a double mixer control that spans 2 registers. | |
1965 | * | |
1966 | * Returns 0 for success. | |
1967 | */ | |
1968 | int snd_soc_get_volsw_2r(struct snd_kcontrol *kcontrol, | |
1969 | struct snd_ctl_elem_value *ucontrol) | |
1970 | { | |
1971 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
1972 | int reg = kcontrol->private_value & 0xff; | |
1973 | int reg2 = (kcontrol->private_value >> 24) & 0xff; | |
1974 | int shift = (kcontrol->private_value >> 8) & 0x0f; | |
1975 | int mask = (kcontrol->private_value >> 12) & 0xff; | |
1976 | int invert = (kcontrol->private_value >> 20) & 0x01; | |
1977 | ||
1978 | ucontrol->value.integer.value[0] = | |
1979 | (snd_soc_read(codec, reg) >> shift) & mask; | |
1980 | ucontrol->value.integer.value[1] = | |
1981 | (snd_soc_read(codec, reg2) >> shift) & mask; | |
1982 | if (invert) { | |
1983 | ucontrol->value.integer.value[0] = | |
1984 | mask - ucontrol->value.integer.value[0]; | |
1985 | ucontrol->value.integer.value[1] = | |
1986 | mask - ucontrol->value.integer.value[1]; | |
1987 | } | |
1988 | ||
1989 | return 0; | |
1990 | } | |
1991 | EXPORT_SYMBOL_GPL(snd_soc_get_volsw_2r); | |
1992 | ||
1993 | /** | |
1994 | * snd_soc_put_volsw_2r - double mixer set callback | |
1995 | * @kcontrol: mixer control | |
1996 | * @uinfo: control element information | |
1997 | * | |
1998 | * Callback to set the value of a double mixer control that spans 2 registers. | |
1999 | * | |
2000 | * Returns 0 for success. | |
2001 | */ | |
2002 | int snd_soc_put_volsw_2r(struct snd_kcontrol *kcontrol, | |
2003 | struct snd_ctl_elem_value *ucontrol) | |
2004 | { | |
2005 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
2006 | int reg = kcontrol->private_value & 0xff; | |
2007 | int reg2 = (kcontrol->private_value >> 24) & 0xff; | |
2008 | int shift = (kcontrol->private_value >> 8) & 0x0f; | |
2009 | int mask = (kcontrol->private_value >> 12) & 0xff; | |
2010 | int invert = (kcontrol->private_value >> 20) & 0x01; | |
2011 | int err; | |
2012 | unsigned short val, val2, val_mask; | |
2013 | ||
2014 | val_mask = mask << shift; | |
2015 | val = (ucontrol->value.integer.value[0] & mask); | |
2016 | val2 = (ucontrol->value.integer.value[1] & mask); | |
2017 | ||
2018 | if (invert) { | |
2019 | val = mask - val; | |
2020 | val2 = mask - val2; | |
2021 | } | |
2022 | ||
2023 | val = val << shift; | |
2024 | val2 = val2 << shift; | |
2025 | ||
2026 | if ((err = snd_soc_update_bits(codec, reg, val_mask, val)) < 0) | |
2027 | return err; | |
2028 | ||
2029 | err = snd_soc_update_bits(codec, reg2, val_mask, val2); | |
2030 | return err; | |
2031 | } | |
2032 | EXPORT_SYMBOL_GPL(snd_soc_put_volsw_2r); | |
2033 | ||
2034 | static int __devinit snd_soc_init(void) | |
2035 | { | |
2036 | printk(KERN_INFO "ASoC version %s\n", SND_SOC_VERSION); | |
2037 | return platform_driver_register(&soc_driver); | |
2038 | } | |
2039 | ||
2040 | static void snd_soc_exit(void) | |
2041 | { | |
2042 | platform_driver_unregister(&soc_driver); | |
2043 | } | |
2044 | ||
2045 | module_init(snd_soc_init); | |
2046 | module_exit(snd_soc_exit); | |
2047 | ||
2048 | /* Module information */ | |
2049 | MODULE_AUTHOR("Liam Girdwood, liam.girdwood@wolfsonmicro.com, www.wolfsonmicro.com"); | |
2050 | MODULE_DESCRIPTION("ALSA SoC Core"); | |
2051 | MODULE_LICENSE("GPL"); |