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