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> | |
da155d5b | 26 | #include <linux/module.h> |
3fabe089 MA |
27 | #include <sound/pcm.h> |
28 | #include <sound/pcm_params.h> | |
0d911bae | 29 | #include <sound/soc.h> |
3fabe089 MA |
30 | #include <sound/initval.h> |
31 | ||
32 | #include "wl1273.h" | |
33 | ||
34 | enum wl1273_mode { WL1273_MODE_BT, WL1273_MODE_FM_RX, WL1273_MODE_FM_TX }; | |
35 | ||
36 | /* codec private data */ | |
37 | struct wl1273_priv { | |
38 | enum wl1273_mode mode; | |
39 | struct wl1273_core *core; | |
40 | unsigned int channels; | |
41 | }; | |
42 | ||
43 | static int snd_wl1273_fm_set_i2s_mode(struct wl1273_core *core, | |
44 | int rate, int width) | |
45 | { | |
228dd545 | 46 | struct device *dev = &core->client->dev; |
3fabe089 MA |
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) { | |
228dd545 | 127 | r = core->write(core, WL1273_I2S_MODE_CONFIG_SET, mode); |
3fabe089 MA |
128 | if (r) |
129 | goto out; | |
130 | ||
131 | core->i2s_mode = mode; | |
228dd545 MA |
132 | r = core->write(core, WL1273_AUDIO_ENABLE, |
133 | WL1273_AUDIO_ENABLE_I2S); | |
3fabe089 MA |
134 | if (r) |
135 | goto out; | |
136 | } | |
137 | out: | |
138 | mutex_unlock(&core->lock); | |
139 | ||
140 | return r; | |
141 | } | |
142 | ||
143 | static int snd_wl1273_fm_set_channel_number(struct wl1273_core *core, | |
144 | int channel_number) | |
145 | { | |
228dd545 | 146 | struct device *dev = &core->client->dev; |
3fabe089 MA |
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) | |
228dd545 | 157 | r = core->write(core, WL1273_MOST_MODE_SET, WL1273_RX_MONO); |
3fabe089 | 158 | else if (channel_number == 1 && core->mode == WL1273_MODE_TX) |
228dd545 | 159 | r = core->write(core, WL1273_MONO_SET, WL1273_TX_MONO); |
3fabe089 | 160 | else if (channel_number == 2 && core->mode == WL1273_MODE_RX) |
228dd545 | 161 | r = core->write(core, WL1273_MOST_MODE_SET, WL1273_RX_STEREO); |
3fabe089 | 162 | else if (channel_number == 2 && core->mode == WL1273_MODE_TX) |
228dd545 | 163 | r = core->write(core, WL1273_MONO_SET, WL1273_TX_STEREO); |
3fabe089 MA |
164 | else |
165 | r = -EINVAL; | |
166 | out: | |
167 | mutex_unlock(&core->lock); | |
168 | ||
169 | return r; | |
170 | } | |
171 | ||
172 | static int snd_wl1273_get_audio_route(struct snd_kcontrol *kcontrol, | |
173 | struct snd_ctl_elem_value *ucontrol) | |
174 | { | |
175 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
176 | struct wl1273_priv *wl1273 = snd_soc_codec_get_drvdata(codec); | |
177 | ||
178 | ucontrol->value.integer.value[0] = wl1273->mode; | |
179 | ||
180 | return 0; | |
181 | } | |
182 | ||
40285f83 MA |
183 | /* |
184 | * TODO: Implement the audio routing in the driver. Now this control | |
185 | * only indicates the setting that has been done elsewhere (in the user | |
186 | * space). | |
187 | */ | |
188 | static const char * const wl1273_audio_route[] = { "Bt", "FmRx", "FmTx" }; | |
3fabe089 MA |
189 | |
190 | static int snd_wl1273_set_audio_route(struct snd_kcontrol *kcontrol, | |
191 | struct snd_ctl_elem_value *ucontrol) | |
192 | { | |
193 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
194 | struct wl1273_priv *wl1273 = snd_soc_codec_get_drvdata(codec); | |
195 | ||
2c4ee9b5 MA |
196 | if (wl1273->mode == ucontrol->value.integer.value[0]) |
197 | return 0; | |
198 | ||
3fabe089 MA |
199 | /* Do not allow changes while stream is running */ |
200 | if (codec->active) | |
201 | return -EPERM; | |
202 | ||
203 | if (ucontrol->value.integer.value[0] < 0 || | |
204 | ucontrol->value.integer.value[0] >= ARRAY_SIZE(wl1273_audio_route)) | |
205 | return -EINVAL; | |
206 | ||
207 | wl1273->mode = ucontrol->value.integer.value[0]; | |
208 | ||
209 | return 1; | |
210 | } | |
211 | ||
212 | static const struct soc_enum wl1273_enum = | |
213 | SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(wl1273_audio_route), wl1273_audio_route); | |
214 | ||
215 | static int snd_wl1273_fm_audio_get(struct snd_kcontrol *kcontrol, | |
216 | struct snd_ctl_elem_value *ucontrol) | |
217 | { | |
218 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
219 | struct wl1273_priv *wl1273 = snd_soc_codec_get_drvdata(codec); | |
220 | ||
221 | dev_dbg(codec->dev, "%s: enter.\n", __func__); | |
222 | ||
223 | ucontrol->value.integer.value[0] = wl1273->core->audio_mode; | |
224 | ||
225 | return 0; | |
226 | } | |
227 | ||
228 | static int snd_wl1273_fm_audio_put(struct snd_kcontrol *kcontrol, | |
229 | struct snd_ctl_elem_value *ucontrol) | |
230 | { | |
231 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
232 | struct wl1273_priv *wl1273 = snd_soc_codec_get_drvdata(codec); | |
233 | int val, r = 0; | |
234 | ||
235 | dev_dbg(codec->dev, "%s: enter.\n", __func__); | |
236 | ||
237 | val = ucontrol->value.integer.value[0]; | |
238 | if (wl1273->core->audio_mode == val) | |
239 | return 0; | |
240 | ||
228dd545 | 241 | r = wl1273->core->set_audio(wl1273->core, val); |
3fabe089 MA |
242 | if (r < 0) |
243 | return r; | |
244 | ||
245 | return 1; | |
246 | } | |
247 | ||
40285f83 | 248 | static const char * const wl1273_audio_strings[] = { "Digital", "Analog" }; |
3fabe089 MA |
249 | |
250 | static const struct soc_enum wl1273_audio_enum = | |
251 | SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(wl1273_audio_strings), | |
252 | wl1273_audio_strings); | |
253 | ||
254 | static int snd_wl1273_fm_volume_get(struct snd_kcontrol *kcontrol, | |
255 | struct snd_ctl_elem_value *ucontrol) | |
256 | { | |
257 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
258 | struct wl1273_priv *wl1273 = snd_soc_codec_get_drvdata(codec); | |
259 | ||
260 | dev_dbg(codec->dev, "%s: enter.\n", __func__); | |
261 | ||
262 | ucontrol->value.integer.value[0] = wl1273->core->volume; | |
263 | ||
264 | return 0; | |
265 | } | |
266 | ||
267 | static int snd_wl1273_fm_volume_put(struct snd_kcontrol *kcontrol, | |
268 | struct snd_ctl_elem_value *ucontrol) | |
269 | { | |
270 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
271 | struct wl1273_priv *wl1273 = snd_soc_codec_get_drvdata(codec); | |
272 | int r; | |
273 | ||
274 | dev_dbg(codec->dev, "%s: enter.\n", __func__); | |
275 | ||
228dd545 MA |
276 | r = wl1273->core->set_volume(wl1273->core, |
277 | ucontrol->value.integer.value[0]); | |
3fabe089 MA |
278 | if (r) |
279 | return r; | |
280 | ||
281 | return 1; | |
282 | } | |
283 | ||
284 | static const struct snd_kcontrol_new wl1273_controls[] = { | |
285 | SOC_ENUM_EXT("Codec Mode", wl1273_enum, | |
286 | snd_wl1273_get_audio_route, snd_wl1273_set_audio_route), | |
287 | SOC_ENUM_EXT("Audio Switch", wl1273_audio_enum, | |
288 | snd_wl1273_fm_audio_get, snd_wl1273_fm_audio_put), | |
289 | SOC_SINGLE_EXT("Volume", 0, 0, WL1273_MAX_VOLUME, 0, | |
290 | snd_wl1273_fm_volume_get, snd_wl1273_fm_volume_put), | |
291 | }; | |
292 | ||
293 | static int wl1273_startup(struct snd_pcm_substream *substream, | |
294 | struct snd_soc_dai *dai) | |
295 | { | |
e6968a17 | 296 | struct snd_soc_codec *codec = dai->codec; |
3fabe089 MA |
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 | { | |
e6968a17 | 331 | struct wl1273_priv *wl1273 = snd_soc_codec_get_drvdata(dai->codec); |
3fabe089 MA |
332 | struct wl1273_core *core = wl1273->core; |
333 | unsigned int rate, width, r; | |
334 | ||
335 | if (params_format(params) != SNDRV_PCM_FORMAT_S16_LE) { | |
336 | pr_err("Only SNDRV_PCM_FORMAT_S16_LE supported.\n"); | |
337 | return -EINVAL; | |
338 | } | |
339 | ||
340 | rate = params_rate(params); | |
341 | width = hw_param_interval(params, SNDRV_PCM_HW_PARAM_SAMPLE_BITS)->min; | |
342 | ||
343 | if (wl1273->mode == WL1273_MODE_BT) { | |
344 | if (rate != 8000) { | |
345 | pr_err("Rate %d not supported.\n", params_rate(params)); | |
346 | return -EINVAL; | |
347 | } | |
348 | ||
349 | if (params_channels(params) != 1) { | |
350 | pr_err("Only mono supported.\n"); | |
351 | return -EINVAL; | |
352 | } | |
353 | ||
354 | return 0; | |
355 | } | |
356 | ||
357 | if (wl1273->mode == WL1273_MODE_FM_TX && | |
358 | substream->stream == SNDRV_PCM_STREAM_CAPTURE) { | |
359 | pr_err("Only playback supported with TX.\n"); | |
360 | return -EINVAL; | |
361 | } | |
362 | ||
363 | if (wl1273->mode == WL1273_MODE_FM_RX && | |
364 | substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
365 | pr_err("Only capture supported with RX.\n"); | |
366 | return -EINVAL; | |
367 | } | |
368 | ||
369 | if (wl1273->mode != WL1273_MODE_FM_RX && | |
370 | wl1273->mode != WL1273_MODE_FM_TX) { | |
371 | pr_err("Unexpected mode: %d.\n", wl1273->mode); | |
372 | return -EINVAL; | |
373 | } | |
374 | ||
375 | r = snd_wl1273_fm_set_i2s_mode(core, rate, width); | |
376 | if (r) | |
377 | return r; | |
378 | ||
379 | wl1273->channels = params_channels(params); | |
380 | r = snd_wl1273_fm_set_channel_number(core, wl1273->channels); | |
381 | if (r) | |
382 | return r; | |
383 | ||
384 | return 0; | |
385 | } | |
386 | ||
85e7652d | 387 | static const struct snd_soc_dai_ops wl1273_dai_ops = { |
3fabe089 MA |
388 | .startup = wl1273_startup, |
389 | .hw_params = wl1273_hw_params, | |
390 | }; | |
391 | ||
392 | static struct snd_soc_dai_driver wl1273_dai = { | |
393 | .name = "wl1273-fm", | |
394 | .playback = { | |
395 | .stream_name = "Playback", | |
396 | .channels_min = 1, | |
397 | .channels_max = 2, | |
398 | .rates = SNDRV_PCM_RATE_8000_48000, | |
399 | .formats = SNDRV_PCM_FMTBIT_S16_LE}, | |
400 | .capture = { | |
401 | .stream_name = "Capture", | |
402 | .channels_min = 1, | |
403 | .channels_max = 2, | |
404 | .rates = SNDRV_PCM_RATE_8000_48000, | |
405 | .formats = SNDRV_PCM_FMTBIT_S16_LE}, | |
406 | .ops = &wl1273_dai_ops, | |
407 | }; | |
408 | ||
409 | /* Audio interface format for the soc_card driver */ | |
410 | int wl1273_get_format(struct snd_soc_codec *codec, unsigned int *fmt) | |
411 | { | |
412 | struct wl1273_priv *wl1273; | |
413 | ||
414 | if (codec == NULL || fmt == NULL) | |
415 | return -EINVAL; | |
416 | ||
417 | wl1273 = snd_soc_codec_get_drvdata(codec); | |
418 | ||
419 | switch (wl1273->mode) { | |
420 | case WL1273_MODE_FM_RX: | |
421 | case WL1273_MODE_FM_TX: | |
422 | *fmt = SND_SOC_DAIFMT_I2S | | |
423 | SND_SOC_DAIFMT_NB_NF | | |
424 | SND_SOC_DAIFMT_CBM_CFM; | |
425 | ||
426 | break; | |
427 | case WL1273_MODE_BT: | |
428 | *fmt = SND_SOC_DAIFMT_DSP_A | | |
429 | SND_SOC_DAIFMT_IB_NF | | |
430 | SND_SOC_DAIFMT_CBM_CFM; | |
431 | ||
432 | break; | |
433 | default: | |
434 | return -EINVAL; | |
435 | } | |
436 | ||
437 | return 0; | |
438 | } | |
439 | EXPORT_SYMBOL_GPL(wl1273_get_format); | |
440 | ||
441 | static int wl1273_probe(struct snd_soc_codec *codec) | |
442 | { | |
9e554696 | 443 | struct wl1273_core **core = codec->dev->platform_data; |
3fabe089 MA |
444 | struct wl1273_priv *wl1273; |
445 | int r; | |
446 | ||
447 | dev_dbg(codec->dev, "%s.\n", __func__); | |
448 | ||
449 | if (!core) { | |
450 | dev_err(codec->dev, "Platform data is missing.\n"); | |
451 | return -EINVAL; | |
452 | } | |
453 | ||
454 | wl1273 = kzalloc(sizeof(struct wl1273_priv), GFP_KERNEL); | |
455 | if (wl1273 == NULL) { | |
456 | dev_err(codec->dev, "Cannot allocate memory.\n"); | |
457 | return -ENOMEM; | |
458 | } | |
459 | ||
460 | wl1273->mode = WL1273_MODE_BT; | |
461 | wl1273->core = *core; | |
462 | ||
463 | snd_soc_codec_set_drvdata(codec, wl1273); | |
3fabe089 | 464 | |
022658be | 465 | r = snd_soc_add_codec_controls(codec, wl1273_controls, |
3fabe089 MA |
466 | ARRAY_SIZE(wl1273_controls)); |
467 | if (r) | |
468 | kfree(wl1273); | |
469 | ||
470 | return r; | |
471 | } | |
472 | ||
473 | static int wl1273_remove(struct snd_soc_codec *codec) | |
474 | { | |
475 | struct wl1273_priv *wl1273 = snd_soc_codec_get_drvdata(codec); | |
476 | ||
477 | dev_dbg(codec->dev, "%s\n", __func__); | |
478 | kfree(wl1273); | |
479 | ||
480 | return 0; | |
481 | } | |
482 | ||
483 | static struct snd_soc_codec_driver soc_codec_dev_wl1273 = { | |
484 | .probe = wl1273_probe, | |
485 | .remove = wl1273_remove, | |
486 | }; | |
487 | ||
7a79e94e | 488 | static int wl1273_platform_probe(struct platform_device *pdev) |
3fabe089 MA |
489 | { |
490 | return snd_soc_register_codec(&pdev->dev, &soc_codec_dev_wl1273, | |
491 | &wl1273_dai, 1); | |
492 | } | |
493 | ||
7a79e94e | 494 | static int wl1273_platform_remove(struct platform_device *pdev) |
3fabe089 MA |
495 | { |
496 | snd_soc_unregister_codec(&pdev->dev); | |
497 | return 0; | |
498 | } | |
499 | ||
500 | MODULE_ALIAS("platform:wl1273-codec"); | |
501 | ||
502 | static struct platform_driver wl1273_platform_driver = { | |
503 | .driver = { | |
504 | .name = "wl1273-codec", | |
505 | .owner = THIS_MODULE, | |
506 | }, | |
507 | .probe = wl1273_platform_probe, | |
7a79e94e | 508 | .remove = wl1273_platform_remove, |
3fabe089 MA |
509 | }; |
510 | ||
5bbcc3c0 | 511 | module_platform_driver(wl1273_platform_driver); |
3fabe089 MA |
512 | |
513 | MODULE_AUTHOR("Matti Aaltonen <matti.j.aaltonen@nokia.com>"); | |
514 | MODULE_DESCRIPTION("ASoC WL1273 codec driver"); | |
515 | MODULE_LICENSE("GPL"); |