Commit | Line | Data |
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3fabe089 MA |
1 | /* |
2 | * ALSA SoC WL1273 codec driver | |
3 | * | |
4 | * Author: Matti Aaltonen, <matti.j.aaltonen@nokia.com> | |
5 | * | |
40285f83 | 6 | * Copyright: (C) 2010, 2011 Nokia Corporation |
3fabe089 MA |
7 | * |
8 | * This program is free software; you can redistribute it and/or | |
9 | * modify it under the terms of the GNU General Public License | |
10 | * version 2 as published by the Free Software Foundation. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, but | |
13 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | * General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with this program; if not, write to the Free Software | |
19 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA | |
20 | * 02110-1301 USA | |
21 | * | |
22 | */ | |
23 | ||
24 | #include <linux/mfd/wl1273-core.h> | |
25 | #include <linux/slab.h> | |
26 | #include <sound/pcm.h> | |
27 | #include <sound/pcm_params.h> | |
0d911bae | 28 | #include <sound/soc.h> |
3fabe089 MA |
29 | #include <sound/initval.h> |
30 | ||
31 | #include "wl1273.h" | |
32 | ||
33 | enum wl1273_mode { WL1273_MODE_BT, WL1273_MODE_FM_RX, WL1273_MODE_FM_TX }; | |
34 | ||
35 | /* codec private data */ | |
36 | struct wl1273_priv { | |
37 | enum wl1273_mode mode; | |
38 | struct wl1273_core *core; | |
39 | unsigned int channels; | |
40 | }; | |
41 | ||
42 | static int snd_wl1273_fm_set_i2s_mode(struct wl1273_core *core, | |
43 | int rate, int width) | |
44 | { | |
228dd545 | 45 | struct device *dev = &core->client->dev; |
3fabe089 MA |
46 | int r = 0; |
47 | u16 mode; | |
48 | ||
49 | dev_dbg(dev, "rate: %d\n", rate); | |
50 | dev_dbg(dev, "width: %d\n", width); | |
51 | ||
52 | mutex_lock(&core->lock); | |
53 | ||
54 | mode = core->i2s_mode & ~WL1273_IS2_WIDTH & ~WL1273_IS2_RATE; | |
55 | ||
56 | switch (rate) { | |
57 | case 48000: | |
58 | mode |= WL1273_IS2_RATE_48K; | |
59 | break; | |
60 | case 44100: | |
61 | mode |= WL1273_IS2_RATE_44_1K; | |
62 | break; | |
63 | case 32000: | |
64 | mode |= WL1273_IS2_RATE_32K; | |
65 | break; | |
66 | case 22050: | |
67 | mode |= WL1273_IS2_RATE_22_05K; | |
68 | break; | |
69 | case 16000: | |
70 | mode |= WL1273_IS2_RATE_16K; | |
71 | break; | |
72 | case 12000: | |
73 | mode |= WL1273_IS2_RATE_12K; | |
74 | break; | |
75 | case 11025: | |
76 | mode |= WL1273_IS2_RATE_11_025; | |
77 | break; | |
78 | case 8000: | |
79 | mode |= WL1273_IS2_RATE_8K; | |
80 | break; | |
81 | default: | |
82 | dev_err(dev, "Sampling rate: %d not supported\n", rate); | |
83 | r = -EINVAL; | |
84 | goto out; | |
85 | } | |
86 | ||
87 | switch (width) { | |
88 | case 16: | |
89 | mode |= WL1273_IS2_WIDTH_32; | |
90 | break; | |
91 | case 20: | |
92 | mode |= WL1273_IS2_WIDTH_40; | |
93 | break; | |
94 | case 24: | |
95 | mode |= WL1273_IS2_WIDTH_48; | |
96 | break; | |
97 | case 25: | |
98 | mode |= WL1273_IS2_WIDTH_50; | |
99 | break; | |
100 | case 30: | |
101 | mode |= WL1273_IS2_WIDTH_60; | |
102 | break; | |
103 | case 32: | |
104 | mode |= WL1273_IS2_WIDTH_64; | |
105 | break; | |
106 | case 40: | |
107 | mode |= WL1273_IS2_WIDTH_80; | |
108 | break; | |
109 | case 48: | |
110 | mode |= WL1273_IS2_WIDTH_96; | |
111 | break; | |
112 | case 64: | |
113 | mode |= WL1273_IS2_WIDTH_128; | |
114 | break; | |
115 | default: | |
116 | dev_err(dev, "Data width: %d not supported\n", width); | |
117 | r = -EINVAL; | |
118 | goto out; | |
119 | } | |
120 | ||
121 | dev_dbg(dev, "WL1273_I2S_DEF_MODE: 0x%04x\n", WL1273_I2S_DEF_MODE); | |
122 | dev_dbg(dev, "core->i2s_mode: 0x%04x\n", core->i2s_mode); | |
123 | dev_dbg(dev, "mode: 0x%04x\n", mode); | |
124 | ||
125 | if (core->i2s_mode != mode) { | |
228dd545 | 126 | r = core->write(core, WL1273_I2S_MODE_CONFIG_SET, mode); |
3fabe089 MA |
127 | if (r) |
128 | goto out; | |
129 | ||
130 | core->i2s_mode = mode; | |
228dd545 MA |
131 | r = core->write(core, WL1273_AUDIO_ENABLE, |
132 | WL1273_AUDIO_ENABLE_I2S); | |
3fabe089 MA |
133 | if (r) |
134 | goto out; | |
135 | } | |
136 | out: | |
137 | mutex_unlock(&core->lock); | |
138 | ||
139 | return r; | |
140 | } | |
141 | ||
142 | static int snd_wl1273_fm_set_channel_number(struct wl1273_core *core, | |
143 | int channel_number) | |
144 | { | |
228dd545 | 145 | struct device *dev = &core->client->dev; |
3fabe089 MA |
146 | int r = 0; |
147 | ||
148 | dev_dbg(dev, "%s\n", __func__); | |
149 | ||
150 | mutex_lock(&core->lock); | |
151 | ||
152 | if (core->channel_number == channel_number) | |
153 | goto out; | |
154 | ||
155 | if (channel_number == 1 && core->mode == WL1273_MODE_RX) | |
228dd545 | 156 | r = core->write(core, WL1273_MOST_MODE_SET, WL1273_RX_MONO); |
3fabe089 | 157 | else if (channel_number == 1 && core->mode == WL1273_MODE_TX) |
228dd545 | 158 | r = core->write(core, WL1273_MONO_SET, WL1273_TX_MONO); |
3fabe089 | 159 | else if (channel_number == 2 && core->mode == WL1273_MODE_RX) |
228dd545 | 160 | r = core->write(core, WL1273_MOST_MODE_SET, WL1273_RX_STEREO); |
3fabe089 | 161 | else if (channel_number == 2 && core->mode == WL1273_MODE_TX) |
228dd545 | 162 | r = core->write(core, WL1273_MONO_SET, WL1273_TX_STEREO); |
3fabe089 MA |
163 | else |
164 | r = -EINVAL; | |
165 | out: | |
166 | mutex_unlock(&core->lock); | |
167 | ||
168 | return r; | |
169 | } | |
170 | ||
171 | static int snd_wl1273_get_audio_route(struct snd_kcontrol *kcontrol, | |
172 | struct snd_ctl_elem_value *ucontrol) | |
173 | { | |
174 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
175 | struct wl1273_priv *wl1273 = snd_soc_codec_get_drvdata(codec); | |
176 | ||
177 | ucontrol->value.integer.value[0] = wl1273->mode; | |
178 | ||
179 | return 0; | |
180 | } | |
181 | ||
40285f83 MA |
182 | /* |
183 | * TODO: Implement the audio routing in the driver. Now this control | |
184 | * only indicates the setting that has been done elsewhere (in the user | |
185 | * space). | |
186 | */ | |
187 | static const char * const wl1273_audio_route[] = { "Bt", "FmRx", "FmTx" }; | |
3fabe089 MA |
188 | |
189 | static int snd_wl1273_set_audio_route(struct snd_kcontrol *kcontrol, | |
190 | struct snd_ctl_elem_value *ucontrol) | |
191 | { | |
192 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
193 | struct wl1273_priv *wl1273 = snd_soc_codec_get_drvdata(codec); | |
194 | ||
2c4ee9b5 MA |
195 | if (wl1273->mode == ucontrol->value.integer.value[0]) |
196 | return 0; | |
197 | ||
3fabe089 MA |
198 | /* Do not allow changes while stream is running */ |
199 | if (codec->active) | |
200 | return -EPERM; | |
201 | ||
202 | if (ucontrol->value.integer.value[0] < 0 || | |
203 | ucontrol->value.integer.value[0] >= ARRAY_SIZE(wl1273_audio_route)) | |
204 | return -EINVAL; | |
205 | ||
206 | wl1273->mode = ucontrol->value.integer.value[0]; | |
207 | ||
208 | return 1; | |
209 | } | |
210 | ||
211 | static const struct soc_enum wl1273_enum = | |
212 | SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(wl1273_audio_route), wl1273_audio_route); | |
213 | ||
214 | static int snd_wl1273_fm_audio_get(struct snd_kcontrol *kcontrol, | |
215 | struct snd_ctl_elem_value *ucontrol) | |
216 | { | |
217 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
218 | struct wl1273_priv *wl1273 = snd_soc_codec_get_drvdata(codec); | |
219 | ||
220 | dev_dbg(codec->dev, "%s: enter.\n", __func__); | |
221 | ||
222 | ucontrol->value.integer.value[0] = wl1273->core->audio_mode; | |
223 | ||
224 | return 0; | |
225 | } | |
226 | ||
227 | static int snd_wl1273_fm_audio_put(struct snd_kcontrol *kcontrol, | |
228 | struct snd_ctl_elem_value *ucontrol) | |
229 | { | |
230 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
231 | struct wl1273_priv *wl1273 = snd_soc_codec_get_drvdata(codec); | |
232 | int val, r = 0; | |
233 | ||
234 | dev_dbg(codec->dev, "%s: enter.\n", __func__); | |
235 | ||
236 | val = ucontrol->value.integer.value[0]; | |
237 | if (wl1273->core->audio_mode == val) | |
238 | return 0; | |
239 | ||
228dd545 | 240 | r = wl1273->core->set_audio(wl1273->core, val); |
3fabe089 MA |
241 | if (r < 0) |
242 | return r; | |
243 | ||
244 | return 1; | |
245 | } | |
246 | ||
40285f83 | 247 | static const char * const wl1273_audio_strings[] = { "Digital", "Analog" }; |
3fabe089 MA |
248 | |
249 | static const struct soc_enum wl1273_audio_enum = | |
250 | SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(wl1273_audio_strings), | |
251 | wl1273_audio_strings); | |
252 | ||
253 | static int snd_wl1273_fm_volume_get(struct snd_kcontrol *kcontrol, | |
254 | struct snd_ctl_elem_value *ucontrol) | |
255 | { | |
256 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
257 | struct wl1273_priv *wl1273 = snd_soc_codec_get_drvdata(codec); | |
258 | ||
259 | dev_dbg(codec->dev, "%s: enter.\n", __func__); | |
260 | ||
261 | ucontrol->value.integer.value[0] = wl1273->core->volume; | |
262 | ||
263 | return 0; | |
264 | } | |
265 | ||
266 | static int snd_wl1273_fm_volume_put(struct snd_kcontrol *kcontrol, | |
267 | struct snd_ctl_elem_value *ucontrol) | |
268 | { | |
269 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
270 | struct wl1273_priv *wl1273 = snd_soc_codec_get_drvdata(codec); | |
271 | int r; | |
272 | ||
273 | dev_dbg(codec->dev, "%s: enter.\n", __func__); | |
274 | ||
228dd545 MA |
275 | r = wl1273->core->set_volume(wl1273->core, |
276 | ucontrol->value.integer.value[0]); | |
3fabe089 MA |
277 | if (r) |
278 | return r; | |
279 | ||
280 | return 1; | |
281 | } | |
282 | ||
283 | static const struct snd_kcontrol_new wl1273_controls[] = { | |
284 | SOC_ENUM_EXT("Codec Mode", wl1273_enum, | |
285 | snd_wl1273_get_audio_route, snd_wl1273_set_audio_route), | |
286 | SOC_ENUM_EXT("Audio Switch", wl1273_audio_enum, | |
287 | snd_wl1273_fm_audio_get, snd_wl1273_fm_audio_put), | |
288 | SOC_SINGLE_EXT("Volume", 0, 0, WL1273_MAX_VOLUME, 0, | |
289 | snd_wl1273_fm_volume_get, snd_wl1273_fm_volume_put), | |
290 | }; | |
291 | ||
292 | static int wl1273_startup(struct snd_pcm_substream *substream, | |
293 | struct snd_soc_dai *dai) | |
294 | { | |
295 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
296 | struct snd_soc_codec *codec = rtd->codec; | |
297 | struct wl1273_priv *wl1273 = snd_soc_codec_get_drvdata(codec); | |
298 | ||
299 | switch (wl1273->mode) { | |
300 | case WL1273_MODE_BT: | |
301 | snd_pcm_hw_constraint_minmax(substream->runtime, | |
302 | SNDRV_PCM_HW_PARAM_RATE, | |
303 | 8000, 8000); | |
304 | snd_pcm_hw_constraint_minmax(substream->runtime, | |
305 | SNDRV_PCM_HW_PARAM_CHANNELS, 1, 1); | |
306 | break; | |
307 | case WL1273_MODE_FM_RX: | |
308 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
309 | pr_err("Cannot play in RX mode.\n"); | |
310 | return -EINVAL; | |
311 | } | |
312 | break; | |
313 | case WL1273_MODE_FM_TX: | |
314 | if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) { | |
315 | pr_err("Cannot capture in TX mode.\n"); | |
316 | return -EINVAL; | |
317 | } | |
318 | break; | |
319 | default: | |
320 | return -EINVAL; | |
321 | break; | |
322 | } | |
323 | ||
324 | return 0; | |
325 | } | |
326 | ||
327 | static int wl1273_hw_params(struct snd_pcm_substream *substream, | |
328 | struct snd_pcm_hw_params *params, | |
329 | struct snd_soc_dai *dai) | |
330 | { | |
331 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
332 | struct wl1273_priv *wl1273 = snd_soc_codec_get_drvdata(rtd->codec); | |
333 | struct wl1273_core *core = wl1273->core; | |
334 | unsigned int rate, width, r; | |
335 | ||
336 | if (params_format(params) != SNDRV_PCM_FORMAT_S16_LE) { | |
337 | pr_err("Only SNDRV_PCM_FORMAT_S16_LE supported.\n"); | |
338 | return -EINVAL; | |
339 | } | |
340 | ||
341 | rate = params_rate(params); | |
342 | width = hw_param_interval(params, SNDRV_PCM_HW_PARAM_SAMPLE_BITS)->min; | |
343 | ||
344 | if (wl1273->mode == WL1273_MODE_BT) { | |
345 | if (rate != 8000) { | |
346 | pr_err("Rate %d not supported.\n", params_rate(params)); | |
347 | return -EINVAL; | |
348 | } | |
349 | ||
350 | if (params_channels(params) != 1) { | |
351 | pr_err("Only mono supported.\n"); | |
352 | return -EINVAL; | |
353 | } | |
354 | ||
355 | return 0; | |
356 | } | |
357 | ||
358 | if (wl1273->mode == WL1273_MODE_FM_TX && | |
359 | substream->stream == SNDRV_PCM_STREAM_CAPTURE) { | |
360 | pr_err("Only playback supported with TX.\n"); | |
361 | return -EINVAL; | |
362 | } | |
363 | ||
364 | if (wl1273->mode == WL1273_MODE_FM_RX && | |
365 | substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
366 | pr_err("Only capture supported with RX.\n"); | |
367 | return -EINVAL; | |
368 | } | |
369 | ||
370 | if (wl1273->mode != WL1273_MODE_FM_RX && | |
371 | wl1273->mode != WL1273_MODE_FM_TX) { | |
372 | pr_err("Unexpected mode: %d.\n", wl1273->mode); | |
373 | return -EINVAL; | |
374 | } | |
375 | ||
376 | r = snd_wl1273_fm_set_i2s_mode(core, rate, width); | |
377 | if (r) | |
378 | return r; | |
379 | ||
380 | wl1273->channels = params_channels(params); | |
381 | r = snd_wl1273_fm_set_channel_number(core, wl1273->channels); | |
382 | if (r) | |
383 | return r; | |
384 | ||
385 | return 0; | |
386 | } | |
387 | ||
388 | static struct snd_soc_dai_ops wl1273_dai_ops = { | |
389 | .startup = wl1273_startup, | |
390 | .hw_params = wl1273_hw_params, | |
391 | }; | |
392 | ||
393 | static struct snd_soc_dai_driver wl1273_dai = { | |
394 | .name = "wl1273-fm", | |
395 | .playback = { | |
396 | .stream_name = "Playback", | |
397 | .channels_min = 1, | |
398 | .channels_max = 2, | |
399 | .rates = SNDRV_PCM_RATE_8000_48000, | |
400 | .formats = SNDRV_PCM_FMTBIT_S16_LE}, | |
401 | .capture = { | |
402 | .stream_name = "Capture", | |
403 | .channels_min = 1, | |
404 | .channels_max = 2, | |
405 | .rates = SNDRV_PCM_RATE_8000_48000, | |
406 | .formats = SNDRV_PCM_FMTBIT_S16_LE}, | |
407 | .ops = &wl1273_dai_ops, | |
408 | }; | |
409 | ||
410 | /* Audio interface format for the soc_card driver */ | |
411 | int wl1273_get_format(struct snd_soc_codec *codec, unsigned int *fmt) | |
412 | { | |
413 | struct wl1273_priv *wl1273; | |
414 | ||
415 | if (codec == NULL || fmt == NULL) | |
416 | return -EINVAL; | |
417 | ||
418 | wl1273 = snd_soc_codec_get_drvdata(codec); | |
419 | ||
420 | switch (wl1273->mode) { | |
421 | case WL1273_MODE_FM_RX: | |
422 | case WL1273_MODE_FM_TX: | |
423 | *fmt = SND_SOC_DAIFMT_I2S | | |
424 | SND_SOC_DAIFMT_NB_NF | | |
425 | SND_SOC_DAIFMT_CBM_CFM; | |
426 | ||
427 | break; | |
428 | case WL1273_MODE_BT: | |
429 | *fmt = SND_SOC_DAIFMT_DSP_A | | |
430 | SND_SOC_DAIFMT_IB_NF | | |
431 | SND_SOC_DAIFMT_CBM_CFM; | |
432 | ||
433 | break; | |
434 | default: | |
435 | return -EINVAL; | |
436 | } | |
437 | ||
438 | return 0; | |
439 | } | |
440 | EXPORT_SYMBOL_GPL(wl1273_get_format); | |
441 | ||
442 | static int wl1273_probe(struct snd_soc_codec *codec) | |
443 | { | |
9e554696 | 444 | struct wl1273_core **core = codec->dev->platform_data; |
3fabe089 MA |
445 | struct wl1273_priv *wl1273; |
446 | int r; | |
447 | ||
448 | dev_dbg(codec->dev, "%s.\n", __func__); | |
449 | ||
450 | if (!core) { | |
451 | dev_err(codec->dev, "Platform data is missing.\n"); | |
452 | return -EINVAL; | |
453 | } | |
454 | ||
455 | wl1273 = kzalloc(sizeof(struct wl1273_priv), GFP_KERNEL); | |
456 | if (wl1273 == NULL) { | |
457 | dev_err(codec->dev, "Cannot allocate memory.\n"); | |
458 | return -ENOMEM; | |
459 | } | |
460 | ||
461 | wl1273->mode = WL1273_MODE_BT; | |
462 | wl1273->core = *core; | |
463 | ||
464 | snd_soc_codec_set_drvdata(codec, wl1273); | |
465 | mutex_init(&codec->mutex); | |
466 | ||
467 | r = snd_soc_add_controls(codec, wl1273_controls, | |
468 | ARRAY_SIZE(wl1273_controls)); | |
469 | if (r) | |
470 | kfree(wl1273); | |
471 | ||
472 | return r; | |
473 | } | |
474 | ||
475 | static int wl1273_remove(struct snd_soc_codec *codec) | |
476 | { | |
477 | struct wl1273_priv *wl1273 = snd_soc_codec_get_drvdata(codec); | |
478 | ||
479 | dev_dbg(codec->dev, "%s\n", __func__); | |
480 | kfree(wl1273); | |
481 | ||
482 | return 0; | |
483 | } | |
484 | ||
485 | static struct snd_soc_codec_driver soc_codec_dev_wl1273 = { | |
486 | .probe = wl1273_probe, | |
487 | .remove = wl1273_remove, | |
488 | }; | |
489 | ||
490 | static int __devinit wl1273_platform_probe(struct platform_device *pdev) | |
491 | { | |
492 | return snd_soc_register_codec(&pdev->dev, &soc_codec_dev_wl1273, | |
493 | &wl1273_dai, 1); | |
494 | } | |
495 | ||
496 | static int __devexit wl1273_platform_remove(struct platform_device *pdev) | |
497 | { | |
498 | snd_soc_unregister_codec(&pdev->dev); | |
499 | return 0; | |
500 | } | |
501 | ||
502 | MODULE_ALIAS("platform:wl1273-codec"); | |
503 | ||
504 | static struct platform_driver wl1273_platform_driver = { | |
505 | .driver = { | |
506 | .name = "wl1273-codec", | |
507 | .owner = THIS_MODULE, | |
508 | }, | |
509 | .probe = wl1273_platform_probe, | |
510 | .remove = __devexit_p(wl1273_platform_remove), | |
511 | }; | |
512 | ||
513 | static int __init wl1273_init(void) | |
514 | { | |
515 | return platform_driver_register(&wl1273_platform_driver); | |
516 | } | |
517 | module_init(wl1273_init); | |
518 | ||
519 | static void __exit wl1273_exit(void) | |
520 | { | |
521 | platform_driver_unregister(&wl1273_platform_driver); | |
522 | } | |
523 | module_exit(wl1273_exit); | |
524 | ||
525 | MODULE_AUTHOR("Matti Aaltonen <matti.j.aaltonen@nokia.com>"); | |
526 | MODULE_DESCRIPTION("ASoC WL1273 codec driver"); | |
527 | MODULE_LICENSE("GPL"); |