1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24#include <linux/mfd/wl1273-core.h>
25#include <linux/slab.h>
26#include <linux/module.h>
27#include <sound/pcm.h>
28#include <sound/pcm_params.h>
29#include <sound/soc.h>
30#include <sound/initval.h>
31
32#include "wl1273.h"
33
34enum wl1273_mode { WL1273_MODE_BT, WL1273_MODE_FM_RX, WL1273_MODE_FM_TX };
35
36
37struct wl1273_priv {
38 enum wl1273_mode mode;
39 struct wl1273_core *core;
40 unsigned int channels;
41};
42
43static int snd_wl1273_fm_set_i2s_mode(struct wl1273_core *core,
44 int rate, int width)
45{
46 struct device *dev = &core->client->dev;
47 int r = 0;
48 u16 mode;
49
50 dev_dbg(dev, "rate: %d\n", rate);
51 dev_dbg(dev, "width: %d\n", width);
52
53 mutex_lock(&core->lock);
54
55 mode = core->i2s_mode & ~WL1273_IS2_WIDTH & ~WL1273_IS2_RATE;
56
57 switch (rate) {
58 case 48000:
59 mode |= WL1273_IS2_RATE_48K;
60 break;
61 case 44100:
62 mode |= WL1273_IS2_RATE_44_1K;
63 break;
64 case 32000:
65 mode |= WL1273_IS2_RATE_32K;
66 break;
67 case 22050:
68 mode |= WL1273_IS2_RATE_22_05K;
69 break;
70 case 16000:
71 mode |= WL1273_IS2_RATE_16K;
72 break;
73 case 12000:
74 mode |= WL1273_IS2_RATE_12K;
75 break;
76 case 11025:
77 mode |= WL1273_IS2_RATE_11_025;
78 break;
79 case 8000:
80 mode |= WL1273_IS2_RATE_8K;
81 break;
82 default:
83 dev_err(dev, "Sampling rate: %d not supported\n", rate);
84 r = -EINVAL;
85 goto out;
86 }
87
88 switch (width) {
89 case 16:
90 mode |= WL1273_IS2_WIDTH_32;
91 break;
92 case 20:
93 mode |= WL1273_IS2_WIDTH_40;
94 break;
95 case 24:
96 mode |= WL1273_IS2_WIDTH_48;
97 break;
98 case 25:
99 mode |= WL1273_IS2_WIDTH_50;
100 break;
101 case 30:
102 mode |= WL1273_IS2_WIDTH_60;
103 break;
104 case 32:
105 mode |= WL1273_IS2_WIDTH_64;
106 break;
107 case 40:
108 mode |= WL1273_IS2_WIDTH_80;
109 break;
110 case 48:
111 mode |= WL1273_IS2_WIDTH_96;
112 break;
113 case 64:
114 mode |= WL1273_IS2_WIDTH_128;
115 break;
116 default:
117 dev_err(dev, "Data width: %d not supported\n", width);
118 r = -EINVAL;
119 goto out;
120 }
121
122 dev_dbg(dev, "WL1273_I2S_DEF_MODE: 0x%04x\n", WL1273_I2S_DEF_MODE);
123 dev_dbg(dev, "core->i2s_mode: 0x%04x\n", core->i2s_mode);
124 dev_dbg(dev, "mode: 0x%04x\n", mode);
125
126 if (core->i2s_mode != mode) {
127 r = core->write(core, WL1273_I2S_MODE_CONFIG_SET, mode);
128 if (r)
129 goto out;
130
131 core->i2s_mode = mode;
132 r = core->write(core, WL1273_AUDIO_ENABLE,
133 WL1273_AUDIO_ENABLE_I2S);
134 if (r)
135 goto out;
136 }
137out:
138 mutex_unlock(&core->lock);
139
140 return r;
141}
142
143static int snd_wl1273_fm_set_channel_number(struct wl1273_core *core,
144 int channel_number)
145{
146 struct device *dev = &core->client->dev;
147 int r = 0;
148
149 dev_dbg(dev, "%s\n", __func__);
150
151 mutex_lock(&core->lock);
152
153 if (core->channel_number == channel_number)
154 goto out;
155
156 if (channel_number == 1 && core->mode == WL1273_MODE_RX)
157 r = core->write(core, WL1273_MOST_MODE_SET, WL1273_RX_MONO);
158 else if (channel_number == 1 && core->mode == WL1273_MODE_TX)
159 r = core->write(core, WL1273_MONO_SET, WL1273_TX_MONO);
160 else if (channel_number == 2 && core->mode == WL1273_MODE_RX)
161 r = core->write(core, WL1273_MOST_MODE_SET, WL1273_RX_STEREO);
162 else if (channel_number == 2 && core->mode == WL1273_MODE_TX)
163 r = core->write(core, WL1273_MONO_SET, WL1273_TX_STEREO);
164 else
165 r = -EINVAL;
166out:
167 mutex_unlock(&core->lock);
168
169 return r;
170}
171
172static int snd_wl1273_get_audio_route(struct snd_kcontrol *kcontrol,
173 struct snd_ctl_elem_value *ucontrol)
174{
175 struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
176 struct wl1273_priv *wl1273 = snd_soc_component_get_drvdata(component);
177
178 ucontrol->value.enumerated.item[0] = wl1273->mode;
179
180 return 0;
181}
182
183
184
185
186
187
188static const char * const wl1273_audio_route[] = { "Bt", "FmRx", "FmTx" };
189
190static int snd_wl1273_set_audio_route(struct snd_kcontrol *kcontrol,
191 struct snd_ctl_elem_value *ucontrol)
192{
193 struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
194 struct wl1273_priv *wl1273 = snd_soc_component_get_drvdata(component);
195
196 if (wl1273->mode == ucontrol->value.enumerated.item[0])
197 return 0;
198
199
200 if (snd_soc_component_is_active(component))
201 return -EPERM;
202
203 if (ucontrol->value.enumerated.item[0] >= ARRAY_SIZE(wl1273_audio_route))
204 return -EINVAL;
205
206 wl1273->mode = ucontrol->value.enumerated.item[0];
207
208 return 1;
209}
210
211static SOC_ENUM_SINGLE_EXT_DECL(wl1273_enum, wl1273_audio_route);
212
213static int snd_wl1273_fm_audio_get(struct snd_kcontrol *kcontrol,
214 struct snd_ctl_elem_value *ucontrol)
215{
216 struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
217 struct wl1273_priv *wl1273 = snd_soc_component_get_drvdata(component);
218
219 dev_dbg(component->dev, "%s: enter.\n", __func__);
220
221 ucontrol->value.enumerated.item[0] = wl1273->core->audio_mode;
222
223 return 0;
224}
225
226static int snd_wl1273_fm_audio_put(struct snd_kcontrol *kcontrol,
227 struct snd_ctl_elem_value *ucontrol)
228{
229 struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
230 struct wl1273_priv *wl1273 = snd_soc_component_get_drvdata(component);
231 int val, r = 0;
232
233 dev_dbg(component->dev, "%s: enter.\n", __func__);
234
235 val = ucontrol->value.enumerated.item[0];
236 if (wl1273->core->audio_mode == val)
237 return 0;
238
239 r = wl1273->core->set_audio(wl1273->core, val);
240 if (r < 0)
241 return r;
242
243 return 1;
244}
245
246static const char * const wl1273_audio_strings[] = { "Digital", "Analog" };
247
248static SOC_ENUM_SINGLE_EXT_DECL(wl1273_audio_enum, wl1273_audio_strings);
249
250static int snd_wl1273_fm_volume_get(struct snd_kcontrol *kcontrol,
251 struct snd_ctl_elem_value *ucontrol)
252{
253 struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
254 struct wl1273_priv *wl1273 = snd_soc_component_get_drvdata(component);
255
256 dev_dbg(component->dev, "%s: enter.\n", __func__);
257
258 ucontrol->value.integer.value[0] = wl1273->core->volume;
259
260 return 0;
261}
262
263static int snd_wl1273_fm_volume_put(struct snd_kcontrol *kcontrol,
264 struct snd_ctl_elem_value *ucontrol)
265{
266 struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
267 struct wl1273_priv *wl1273 = snd_soc_component_get_drvdata(component);
268 int r;
269
270 dev_dbg(component->dev, "%s: enter.\n", __func__);
271
272 r = wl1273->core->set_volume(wl1273->core,
273 ucontrol->value.integer.value[0]);
274 if (r)
275 return r;
276
277 return 1;
278}
279
280static const struct snd_kcontrol_new wl1273_controls[] = {
281 SOC_ENUM_EXT("Codec Mode", wl1273_enum,
282 snd_wl1273_get_audio_route, snd_wl1273_set_audio_route),
283 SOC_ENUM_EXT("Audio Switch", wl1273_audio_enum,
284 snd_wl1273_fm_audio_get, snd_wl1273_fm_audio_put),
285 SOC_SINGLE_EXT("Volume", 0, 0, WL1273_MAX_VOLUME, 0,
286 snd_wl1273_fm_volume_get, snd_wl1273_fm_volume_put),
287};
288
289static const struct snd_soc_dapm_widget wl1273_dapm_widgets[] = {
290 SND_SOC_DAPM_INPUT("RX"),
291
292 SND_SOC_DAPM_OUTPUT("TX"),
293};
294
295static const struct snd_soc_dapm_route wl1273_dapm_routes[] = {
296 { "Capture", NULL, "RX" },
297
298 { "TX", NULL, "Playback" },
299};
300
301static int wl1273_startup(struct snd_pcm_substream *substream,
302 struct snd_soc_dai *dai)
303{
304 struct snd_soc_component *component = dai->component;
305 struct wl1273_priv *wl1273 = snd_soc_component_get_drvdata(component);
306
307 switch (wl1273->mode) {
308 case WL1273_MODE_BT:
309 snd_pcm_hw_constraint_single(substream->runtime,
310 SNDRV_PCM_HW_PARAM_RATE, 8000);
311 snd_pcm_hw_constraint_single(substream->runtime,
312 SNDRV_PCM_HW_PARAM_CHANNELS, 1);
313 break;
314 case WL1273_MODE_FM_RX:
315 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
316 pr_err("Cannot play in RX mode.\n");
317 return -EINVAL;
318 }
319 break;
320 case WL1273_MODE_FM_TX:
321 if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
322 pr_err("Cannot capture in TX mode.\n");
323 return -EINVAL;
324 }
325 break;
326 default:
327 return -EINVAL;
328 break;
329 }
330
331 return 0;
332}
333
334static int wl1273_hw_params(struct snd_pcm_substream *substream,
335 struct snd_pcm_hw_params *params,
336 struct snd_soc_dai *dai)
337{
338 struct wl1273_priv *wl1273 = snd_soc_component_get_drvdata(dai->component);
339 struct wl1273_core *core = wl1273->core;
340 unsigned int rate, width, r;
341
342 if (params_width(params) != 16) {
343 dev_err(dai->dev, "%d bits/sample not supported\n",
344 params_width(params));
345 return -EINVAL;
346 }
347
348 rate = params_rate(params);
349 width = hw_param_interval(params, SNDRV_PCM_HW_PARAM_SAMPLE_BITS)->min;
350
351 if (wl1273->mode == WL1273_MODE_BT) {
352 if (rate != 8000) {
353 pr_err("Rate %d not supported.\n", params_rate(params));
354 return -EINVAL;
355 }
356
357 if (params_channels(params) != 1) {
358 pr_err("Only mono supported.\n");
359 return -EINVAL;
360 }
361
362 return 0;
363 }
364
365 if (wl1273->mode == WL1273_MODE_FM_TX &&
366 substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
367 pr_err("Only playback supported with TX.\n");
368 return -EINVAL;
369 }
370
371 if (wl1273->mode == WL1273_MODE_FM_RX &&
372 substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
373 pr_err("Only capture supported with RX.\n");
374 return -EINVAL;
375 }
376
377 if (wl1273->mode != WL1273_MODE_FM_RX &&
378 wl1273->mode != WL1273_MODE_FM_TX) {
379 pr_err("Unexpected mode: %d.\n", wl1273->mode);
380 return -EINVAL;
381 }
382
383 r = snd_wl1273_fm_set_i2s_mode(core, rate, width);
384 if (r)
385 return r;
386
387 wl1273->channels = params_channels(params);
388 r = snd_wl1273_fm_set_channel_number(core, wl1273->channels);
389 if (r)
390 return r;
391
392 return 0;
393}
394
395static const struct snd_soc_dai_ops wl1273_dai_ops = {
396 .startup = wl1273_startup,
397 .hw_params = wl1273_hw_params,
398};
399
400static struct snd_soc_dai_driver wl1273_dai = {
401 .name = "wl1273-fm",
402 .playback = {
403 .stream_name = "Playback",
404 .channels_min = 1,
405 .channels_max = 2,
406 .rates = SNDRV_PCM_RATE_8000_48000,
407 .formats = SNDRV_PCM_FMTBIT_S16_LE},
408 .capture = {
409 .stream_name = "Capture",
410 .channels_min = 1,
411 .channels_max = 2,
412 .rates = SNDRV_PCM_RATE_8000_48000,
413 .formats = SNDRV_PCM_FMTBIT_S16_LE},
414 .ops = &wl1273_dai_ops,
415};
416
417
418int wl1273_get_format(struct snd_soc_component *component, unsigned int *fmt)
419{
420 struct wl1273_priv *wl1273;
421
422 if (component == NULL || fmt == NULL)
423 return -EINVAL;
424
425 wl1273 = snd_soc_component_get_drvdata(component);
426
427 switch (wl1273->mode) {
428 case WL1273_MODE_FM_RX:
429 case WL1273_MODE_FM_TX:
430 *fmt = SND_SOC_DAIFMT_I2S |
431 SND_SOC_DAIFMT_NB_NF |
432 SND_SOC_DAIFMT_CBM_CFM;
433
434 break;
435 case WL1273_MODE_BT:
436 *fmt = SND_SOC_DAIFMT_DSP_A |
437 SND_SOC_DAIFMT_IB_NF |
438 SND_SOC_DAIFMT_CBM_CFM;
439
440 break;
441 default:
442 return -EINVAL;
443 }
444
445 return 0;
446}
447EXPORT_SYMBOL_GPL(wl1273_get_format);
448
449static int wl1273_probe(struct snd_soc_component *component)
450{
451 struct wl1273_core **core = component->dev->platform_data;
452 struct wl1273_priv *wl1273;
453
454 dev_dbg(component->dev, "%s.\n", __func__);
455
456 if (!core) {
457 dev_err(component->dev, "Platform data is missing.\n");
458 return -EINVAL;
459 }
460
461 wl1273 = kzalloc(sizeof(struct wl1273_priv), GFP_KERNEL);
462 if (!wl1273)
463 return -ENOMEM;
464
465 wl1273->mode = WL1273_MODE_BT;
466 wl1273->core = *core;
467
468 snd_soc_component_set_drvdata(component, wl1273);
469
470 return 0;
471}
472
473static void wl1273_remove(struct snd_soc_component *component)
474{
475 struct wl1273_priv *wl1273 = snd_soc_component_get_drvdata(component);
476
477 dev_dbg(component->dev, "%s\n", __func__);
478 kfree(wl1273);
479}
480
481static const struct snd_soc_component_driver soc_component_dev_wl1273 = {
482 .probe = wl1273_probe,
483 .remove = wl1273_remove,
484 .controls = wl1273_controls,
485 .num_controls = ARRAY_SIZE(wl1273_controls),
486 .dapm_widgets = wl1273_dapm_widgets,
487 .num_dapm_widgets = ARRAY_SIZE(wl1273_dapm_widgets),
488 .dapm_routes = wl1273_dapm_routes,
489 .num_dapm_routes = ARRAY_SIZE(wl1273_dapm_routes),
490 .idle_bias_on = 1,
491 .use_pmdown_time = 1,
492 .endianness = 1,
493 .non_legacy_dai_naming = 1,
494};
495
496static int wl1273_platform_probe(struct platform_device *pdev)
497{
498 return devm_snd_soc_register_component(&pdev->dev,
499 &soc_component_dev_wl1273,
500 &wl1273_dai, 1);
501}
502
503static int wl1273_platform_remove(struct platform_device *pdev)
504{
505 return 0;
506}
507
508MODULE_ALIAS("platform:wl1273-codec");
509
510static struct platform_driver wl1273_platform_driver = {
511 .driver = {
512 .name = "wl1273-codec",
513 },
514 .probe = wl1273_platform_probe,
515 .remove = wl1273_platform_remove,
516};
517
518module_platform_driver(wl1273_platform_driver);
519
520MODULE_AUTHOR("Matti Aaltonen <matti.j.aaltonen@nokia.com>");
521MODULE_DESCRIPTION("ASoC WL1273 codec driver");
522MODULE_LICENSE("GPL");
523
