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10#include <linux/platform_device.h>
11#include <linux/export.h>
12#include <sound/core.h>
13#include <sound/pcm.h>
14#include <sound/pcm_params.h>
15#include <sound/soc.h>
16
17int snd_soc_calc_frame_size(int sample_size, int channels, int tdm_slots)
18{
19 return sample_size * channels * tdm_slots;
20}
21EXPORT_SYMBOL_GPL(snd_soc_calc_frame_size);
22
23int snd_soc_params_to_frame_size(struct snd_pcm_hw_params *params)
24{
25 int sample_size;
26
27 sample_size = snd_pcm_format_width(params_format(params));
28 if (sample_size < 0)
29 return sample_size;
30
31 return snd_soc_calc_frame_size(sample_size, params_channels(params),
32 1);
33}
34EXPORT_SYMBOL_GPL(snd_soc_params_to_frame_size);
35
36int snd_soc_calc_bclk(int fs, int sample_size, int channels, int tdm_slots)
37{
38 return fs * snd_soc_calc_frame_size(sample_size, channels, tdm_slots);
39}
40EXPORT_SYMBOL_GPL(snd_soc_calc_bclk);
41
42int snd_soc_params_to_bclk(struct snd_pcm_hw_params *params)
43{
44 int ret;
45
46 ret = snd_soc_params_to_frame_size(params);
47
48 if (ret > 0)
49 return ret * params_rate(params);
50 else
51 return ret;
52}
53EXPORT_SYMBOL_GPL(snd_soc_params_to_bclk);
54
55int snd_soc_component_enable_pin(struct snd_soc_component *component,
56 const char *pin)
57{
58 struct snd_soc_dapm_context *dapm =
59 snd_soc_component_get_dapm(component);
60 char *full_name;
61 int ret;
62
63 if (!component->name_prefix)
64 return snd_soc_dapm_enable_pin(dapm, pin);
65
66 full_name = kasprintf(GFP_KERNEL, "%s %s", component->name_prefix, pin);
67 if (!full_name)
68 return -ENOMEM;
69
70 ret = snd_soc_dapm_enable_pin(dapm, full_name);
71 kfree(full_name);
72
73 return ret;
74}
75EXPORT_SYMBOL_GPL(snd_soc_component_enable_pin);
76
77int snd_soc_component_enable_pin_unlocked(struct snd_soc_component *component,
78 const char *pin)
79{
80 struct snd_soc_dapm_context *dapm =
81 snd_soc_component_get_dapm(component);
82 char *full_name;
83 int ret;
84
85 if (!component->name_prefix)
86 return snd_soc_dapm_enable_pin_unlocked(dapm, pin);
87
88 full_name = kasprintf(GFP_KERNEL, "%s %s", component->name_prefix, pin);
89 if (!full_name)
90 return -ENOMEM;
91
92 ret = snd_soc_dapm_enable_pin_unlocked(dapm, full_name);
93 kfree(full_name);
94
95 return ret;
96}
97EXPORT_SYMBOL_GPL(snd_soc_component_enable_pin_unlocked);
98
99int snd_soc_component_disable_pin(struct snd_soc_component *component,
100 const char *pin)
101{
102 struct snd_soc_dapm_context *dapm =
103 snd_soc_component_get_dapm(component);
104 char *full_name;
105 int ret;
106
107 if (!component->name_prefix)
108 return snd_soc_dapm_disable_pin(dapm, pin);
109
110 full_name = kasprintf(GFP_KERNEL, "%s %s", component->name_prefix, pin);
111 if (!full_name)
112 return -ENOMEM;
113
114 ret = snd_soc_dapm_disable_pin(dapm, full_name);
115 kfree(full_name);
116
117 return ret;
118}
119EXPORT_SYMBOL_GPL(snd_soc_component_disable_pin);
120
121int snd_soc_component_disable_pin_unlocked(struct snd_soc_component *component,
122 const char *pin)
123{
124 struct snd_soc_dapm_context *dapm =
125 snd_soc_component_get_dapm(component);
126 char *full_name;
127 int ret;
128
129 if (!component->name_prefix)
130 return snd_soc_dapm_disable_pin_unlocked(dapm, pin);
131
132 full_name = kasprintf(GFP_KERNEL, "%s %s", component->name_prefix, pin);
133 if (!full_name)
134 return -ENOMEM;
135
136 ret = snd_soc_dapm_disable_pin_unlocked(dapm, full_name);
137 kfree(full_name);
138
139 return ret;
140}
141EXPORT_SYMBOL_GPL(snd_soc_component_disable_pin_unlocked);
142
143int snd_soc_component_nc_pin(struct snd_soc_component *component,
144 const char *pin)
145{
146 struct snd_soc_dapm_context *dapm =
147 snd_soc_component_get_dapm(component);
148 char *full_name;
149 int ret;
150
151 if (!component->name_prefix)
152 return snd_soc_dapm_nc_pin(dapm, pin);
153
154 full_name = kasprintf(GFP_KERNEL, "%s %s", component->name_prefix, pin);
155 if (!full_name)
156 return -ENOMEM;
157
158 ret = snd_soc_dapm_nc_pin(dapm, full_name);
159 kfree(full_name);
160
161 return ret;
162}
163EXPORT_SYMBOL_GPL(snd_soc_component_nc_pin);
164
165int snd_soc_component_nc_pin_unlocked(struct snd_soc_component *component,
166 const char *pin)
167{
168 struct snd_soc_dapm_context *dapm =
169 snd_soc_component_get_dapm(component);
170 char *full_name;
171 int ret;
172
173 if (!component->name_prefix)
174 return snd_soc_dapm_nc_pin_unlocked(dapm, pin);
175
176 full_name = kasprintf(GFP_KERNEL, "%s %s", component->name_prefix, pin);
177 if (!full_name)
178 return -ENOMEM;
179
180 ret = snd_soc_dapm_nc_pin_unlocked(dapm, full_name);
181 kfree(full_name);
182
183 return ret;
184}
185EXPORT_SYMBOL_GPL(snd_soc_component_nc_pin_unlocked);
186
187int snd_soc_component_get_pin_status(struct snd_soc_component *component,
188 const char *pin)
189{
190 struct snd_soc_dapm_context *dapm =
191 snd_soc_component_get_dapm(component);
192 char *full_name;
193 int ret;
194
195 if (!component->name_prefix)
196 return snd_soc_dapm_get_pin_status(dapm, pin);
197
198 full_name = kasprintf(GFP_KERNEL, "%s %s", component->name_prefix, pin);
199 if (!full_name)
200 return -ENOMEM;
201
202 ret = snd_soc_dapm_get_pin_status(dapm, full_name);
203 kfree(full_name);
204
205 return ret;
206}
207EXPORT_SYMBOL_GPL(snd_soc_component_get_pin_status);
208
209int snd_soc_component_force_enable_pin(struct snd_soc_component *component,
210 const char *pin)
211{
212 struct snd_soc_dapm_context *dapm =
213 snd_soc_component_get_dapm(component);
214 char *full_name;
215 int ret;
216
217 if (!component->name_prefix)
218 return snd_soc_dapm_force_enable_pin(dapm, pin);
219
220 full_name = kasprintf(GFP_KERNEL, "%s %s", component->name_prefix, pin);
221 if (!full_name)
222 return -ENOMEM;
223
224 ret = snd_soc_dapm_force_enable_pin(dapm, full_name);
225 kfree(full_name);
226
227 return ret;
228}
229EXPORT_SYMBOL_GPL(snd_soc_component_force_enable_pin);
230
231int snd_soc_component_force_enable_pin_unlocked(
232 struct snd_soc_component *component,
233 const char *pin)
234{
235 struct snd_soc_dapm_context *dapm =
236 snd_soc_component_get_dapm(component);
237 char *full_name;
238 int ret;
239
240 if (!component->name_prefix)
241 return snd_soc_dapm_force_enable_pin_unlocked(dapm, pin);
242
243 full_name = kasprintf(GFP_KERNEL, "%s %s", component->name_prefix, pin);
244 if (!full_name)
245 return -ENOMEM;
246
247 ret = snd_soc_dapm_force_enable_pin_unlocked(dapm, full_name);
248 kfree(full_name);
249
250 return ret;
251}
252EXPORT_SYMBOL_GPL(snd_soc_component_force_enable_pin_unlocked);
253
254static const struct snd_pcm_hardware dummy_dma_hardware = {
255
256 .info = SNDRV_PCM_INFO_INTERLEAVED |
257 SNDRV_PCM_INFO_BLOCK_TRANSFER,
258 .buffer_bytes_max = 128*1024,
259 .period_bytes_min = PAGE_SIZE,
260 .period_bytes_max = PAGE_SIZE*2,
261 .periods_min = 2,
262 .periods_max = 128,
263};
264
265static int dummy_dma_open(struct snd_pcm_substream *substream)
266{
267 struct snd_soc_pcm_runtime *rtd = substream->private_data;
268
269
270 if (!rtd->dai_link->no_pcm)
271 snd_soc_set_runtime_hwparams(substream, &dummy_dma_hardware);
272
273 return 0;
274}
275
276static const struct snd_pcm_ops snd_dummy_dma_ops = {
277 .open = dummy_dma_open,
278 .ioctl = snd_pcm_lib_ioctl,
279};
280
281static const struct snd_soc_component_driver dummy_platform = {
282 .ops = &snd_dummy_dma_ops,
283};
284
285static const struct snd_soc_component_driver dummy_codec = {
286 .idle_bias_on = 1,
287 .use_pmdown_time = 1,
288 .endianness = 1,
289 .non_legacy_dai_naming = 1,
290};
291
292#define STUB_RATES SNDRV_PCM_RATE_8000_192000
293#define STUB_FORMATS (SNDRV_PCM_FMTBIT_S8 | \
294 SNDRV_PCM_FMTBIT_U8 | \
295 SNDRV_PCM_FMTBIT_S16_LE | \
296 SNDRV_PCM_FMTBIT_U16_LE | \
297 SNDRV_PCM_FMTBIT_S24_LE | \
298 SNDRV_PCM_FMTBIT_U24_LE | \
299 SNDRV_PCM_FMTBIT_S32_LE | \
300 SNDRV_PCM_FMTBIT_U32_LE | \
301 SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE)
302
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310
311static struct snd_soc_dai_driver dummy_dai = {
312 .name = "snd-soc-dummy-dai",
313 .playback = {
314 .stream_name = "Playback",
315 .channels_min = 1,
316 .channels_max = 384,
317 .rates = STUB_RATES,
318 .formats = STUB_FORMATS,
319 },
320 .capture = {
321 .stream_name = "Capture",
322 .channels_min = 1,
323 .channels_max = 384,
324 .rates = STUB_RATES,
325 .formats = STUB_FORMATS,
326 },
327};
328
329int snd_soc_dai_is_dummy(struct snd_soc_dai *dai)
330{
331 if (dai->driver == &dummy_dai)
332 return 1;
333 return 0;
334}
335
336static int snd_soc_dummy_probe(struct platform_device *pdev)
337{
338 int ret;
339
340 ret = devm_snd_soc_register_component(&pdev->dev,
341 &dummy_codec, &dummy_dai, 1);
342 if (ret < 0)
343 return ret;
344
345 ret = devm_snd_soc_register_component(&pdev->dev, &dummy_platform,
346 NULL, 0);
347
348 return ret;
349}
350
351static struct platform_driver soc_dummy_driver = {
352 .driver = {
353 .name = "snd-soc-dummy",
354 },
355 .probe = snd_soc_dummy_probe,
356};
357
358static struct platform_device *soc_dummy_dev;
359
360int __init snd_soc_util_init(void)
361{
362 int ret;
363
364 soc_dummy_dev =
365 platform_device_register_simple("snd-soc-dummy", -1, NULL, 0);
366 if (IS_ERR(soc_dummy_dev))
367 return PTR_ERR(soc_dummy_dev);
368
369 ret = platform_driver_register(&soc_dummy_driver);
370 if (ret != 0)
371 platform_device_unregister(soc_dummy_dev);
372
373 return ret;
374}
375
376void __exit snd_soc_util_exit(void)
377{
378 platform_driver_unregister(&soc_dummy_driver);
379 platform_device_unregister(soc_dummy_dev);
380}
381
