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 | { | |
ea53bf77 | 175 | struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol); |
3fabe089 MA |
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 | { | |
ea53bf77 | 193 | struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol); |
3fabe089 MA |
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 | 199 | /* Do not allow changes while stream is running */ |
5c898e74 | 200 | if (snd_soc_codec_is_active(codec)) |
3fabe089 MA |
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 | ||
4ec20a97 | 212 | static SOC_ENUM_SINGLE_EXT_DECL(wl1273_enum, wl1273_audio_route); |
3fabe089 MA |
213 | |
214 | static int snd_wl1273_fm_audio_get(struct snd_kcontrol *kcontrol, | |
215 | struct snd_ctl_elem_value *ucontrol) | |
216 | { | |
ea53bf77 | 217 | struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol); |
3fabe089 MA |
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 | { | |
ea53bf77 | 230 | struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol); |
3fabe089 MA |
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 | 248 | |
4ec20a97 | 249 | static SOC_ENUM_SINGLE_EXT_DECL(wl1273_audio_enum, wl1273_audio_strings); |
3fabe089 MA |
250 | |
251 | static int snd_wl1273_fm_volume_get(struct snd_kcontrol *kcontrol, | |
252 | struct snd_ctl_elem_value *ucontrol) | |
253 | { | |
ea53bf77 | 254 | struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol); |
3fabe089 MA |
255 | struct wl1273_priv *wl1273 = snd_soc_codec_get_drvdata(codec); |
256 | ||
257 | dev_dbg(codec->dev, "%s: enter.\n", __func__); | |
258 | ||
259 | ucontrol->value.integer.value[0] = wl1273->core->volume; | |
260 | ||
261 | return 0; | |
262 | } | |
263 | ||
264 | static int snd_wl1273_fm_volume_put(struct snd_kcontrol *kcontrol, | |
265 | struct snd_ctl_elem_value *ucontrol) | |
266 | { | |
ea53bf77 | 267 | struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol); |
3fabe089 MA |
268 | struct wl1273_priv *wl1273 = snd_soc_codec_get_drvdata(codec); |
269 | int r; | |
270 | ||
271 | dev_dbg(codec->dev, "%s: enter.\n", __func__); | |
272 | ||
228dd545 MA |
273 | r = wl1273->core->set_volume(wl1273->core, |
274 | ucontrol->value.integer.value[0]); | |
3fabe089 MA |
275 | if (r) |
276 | return r; | |
277 | ||
278 | return 1; | |
279 | } | |
280 | ||
281 | static const struct snd_kcontrol_new wl1273_controls[] = { | |
282 | SOC_ENUM_EXT("Codec Mode", wl1273_enum, | |
283 | snd_wl1273_get_audio_route, snd_wl1273_set_audio_route), | |
284 | SOC_ENUM_EXT("Audio Switch", wl1273_audio_enum, | |
285 | snd_wl1273_fm_audio_get, snd_wl1273_fm_audio_put), | |
286 | SOC_SINGLE_EXT("Volume", 0, 0, WL1273_MAX_VOLUME, 0, | |
287 | snd_wl1273_fm_volume_get, snd_wl1273_fm_volume_put), | |
288 | }; | |
289 | ||
e29deb48 MB |
290 | static const struct snd_soc_dapm_widget wl1273_dapm_widgets[] = { |
291 | SND_SOC_DAPM_INPUT("RX"), | |
292 | ||
293 | SND_SOC_DAPM_OUTPUT("TX"), | |
294 | }; | |
295 | ||
296 | static const struct snd_soc_dapm_route wl1273_dapm_routes[] = { | |
297 | { "Capture", NULL, "RX" }, | |
298 | ||
299 | { "TX", NULL, "Playback" }, | |
300 | }; | |
301 | ||
3fabe089 MA |
302 | static int wl1273_startup(struct snd_pcm_substream *substream, |
303 | struct snd_soc_dai *dai) | |
304 | { | |
e6968a17 | 305 | struct snd_soc_codec *codec = dai->codec; |
3fabe089 MA |
306 | struct wl1273_priv *wl1273 = snd_soc_codec_get_drvdata(codec); |
307 | ||
308 | switch (wl1273->mode) { | |
309 | case WL1273_MODE_BT: | |
310 | snd_pcm_hw_constraint_minmax(substream->runtime, | |
311 | SNDRV_PCM_HW_PARAM_RATE, | |
312 | 8000, 8000); | |
313 | snd_pcm_hw_constraint_minmax(substream->runtime, | |
314 | SNDRV_PCM_HW_PARAM_CHANNELS, 1, 1); | |
315 | break; | |
316 | case WL1273_MODE_FM_RX: | |
317 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
318 | pr_err("Cannot play in RX mode.\n"); | |
319 | return -EINVAL; | |
320 | } | |
321 | break; | |
322 | case WL1273_MODE_FM_TX: | |
323 | if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) { | |
324 | pr_err("Cannot capture in TX mode.\n"); | |
325 | return -EINVAL; | |
326 | } | |
327 | break; | |
328 | default: | |
329 | return -EINVAL; | |
330 | break; | |
331 | } | |
332 | ||
333 | return 0; | |
334 | } | |
335 | ||
336 | static int wl1273_hw_params(struct snd_pcm_substream *substream, | |
337 | struct snd_pcm_hw_params *params, | |
338 | struct snd_soc_dai *dai) | |
339 | { | |
e6968a17 | 340 | struct wl1273_priv *wl1273 = snd_soc_codec_get_drvdata(dai->codec); |
3fabe089 MA |
341 | struct wl1273_core *core = wl1273->core; |
342 | unsigned int rate, width, r; | |
343 | ||
9630181a MB |
344 | if (params_width(params) != 16) { |
345 | dev_err(dai->dev, "%d bits/sample not supported\n", | |
346 | params_width(params)); | |
3fabe089 MA |
347 | return -EINVAL; |
348 | } | |
349 | ||
350 | rate = params_rate(params); | |
351 | width = hw_param_interval(params, SNDRV_PCM_HW_PARAM_SAMPLE_BITS)->min; | |
352 | ||
353 | if (wl1273->mode == WL1273_MODE_BT) { | |
354 | if (rate != 8000) { | |
355 | pr_err("Rate %d not supported.\n", params_rate(params)); | |
356 | return -EINVAL; | |
357 | } | |
358 | ||
359 | if (params_channels(params) != 1) { | |
360 | pr_err("Only mono supported.\n"); | |
361 | return -EINVAL; | |
362 | } | |
363 | ||
364 | return 0; | |
365 | } | |
366 | ||
367 | if (wl1273->mode == WL1273_MODE_FM_TX && | |
368 | substream->stream == SNDRV_PCM_STREAM_CAPTURE) { | |
369 | pr_err("Only playback supported with TX.\n"); | |
370 | return -EINVAL; | |
371 | } | |
372 | ||
373 | if (wl1273->mode == WL1273_MODE_FM_RX && | |
374 | substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
375 | pr_err("Only capture supported with RX.\n"); | |
376 | return -EINVAL; | |
377 | } | |
378 | ||
379 | if (wl1273->mode != WL1273_MODE_FM_RX && | |
380 | wl1273->mode != WL1273_MODE_FM_TX) { | |
381 | pr_err("Unexpected mode: %d.\n", wl1273->mode); | |
382 | return -EINVAL; | |
383 | } | |
384 | ||
385 | r = snd_wl1273_fm_set_i2s_mode(core, rate, width); | |
386 | if (r) | |
387 | return r; | |
388 | ||
389 | wl1273->channels = params_channels(params); | |
390 | r = snd_wl1273_fm_set_channel_number(core, wl1273->channels); | |
391 | if (r) | |
392 | return r; | |
393 | ||
394 | return 0; | |
395 | } | |
396 | ||
85e7652d | 397 | static const struct snd_soc_dai_ops wl1273_dai_ops = { |
3fabe089 MA |
398 | .startup = wl1273_startup, |
399 | .hw_params = wl1273_hw_params, | |
400 | }; | |
401 | ||
402 | static struct snd_soc_dai_driver wl1273_dai = { | |
403 | .name = "wl1273-fm", | |
404 | .playback = { | |
405 | .stream_name = "Playback", | |
406 | .channels_min = 1, | |
407 | .channels_max = 2, | |
408 | .rates = SNDRV_PCM_RATE_8000_48000, | |
409 | .formats = SNDRV_PCM_FMTBIT_S16_LE}, | |
410 | .capture = { | |
411 | .stream_name = "Capture", | |
412 | .channels_min = 1, | |
413 | .channels_max = 2, | |
414 | .rates = SNDRV_PCM_RATE_8000_48000, | |
415 | .formats = SNDRV_PCM_FMTBIT_S16_LE}, | |
416 | .ops = &wl1273_dai_ops, | |
417 | }; | |
418 | ||
419 | /* Audio interface format for the soc_card driver */ | |
420 | int wl1273_get_format(struct snd_soc_codec *codec, unsigned int *fmt) | |
421 | { | |
422 | struct wl1273_priv *wl1273; | |
423 | ||
424 | if (codec == NULL || fmt == NULL) | |
425 | return -EINVAL; | |
426 | ||
427 | wl1273 = snd_soc_codec_get_drvdata(codec); | |
428 | ||
429 | switch (wl1273->mode) { | |
430 | case WL1273_MODE_FM_RX: | |
431 | case WL1273_MODE_FM_TX: | |
432 | *fmt = SND_SOC_DAIFMT_I2S | | |
433 | SND_SOC_DAIFMT_NB_NF | | |
434 | SND_SOC_DAIFMT_CBM_CFM; | |
435 | ||
436 | break; | |
437 | case WL1273_MODE_BT: | |
438 | *fmt = SND_SOC_DAIFMT_DSP_A | | |
439 | SND_SOC_DAIFMT_IB_NF | | |
440 | SND_SOC_DAIFMT_CBM_CFM; | |
441 | ||
442 | break; | |
443 | default: | |
444 | return -EINVAL; | |
445 | } | |
446 | ||
447 | return 0; | |
448 | } | |
449 | EXPORT_SYMBOL_GPL(wl1273_get_format); | |
450 | ||
451 | static int wl1273_probe(struct snd_soc_codec *codec) | |
452 | { | |
9e554696 | 453 | struct wl1273_core **core = codec->dev->platform_data; |
3fabe089 | 454 | struct wl1273_priv *wl1273; |
3fabe089 MA |
455 | |
456 | dev_dbg(codec->dev, "%s.\n", __func__); | |
457 | ||
458 | if (!core) { | |
459 | dev_err(codec->dev, "Platform data is missing.\n"); | |
460 | return -EINVAL; | |
461 | } | |
462 | ||
463 | wl1273 = kzalloc(sizeof(struct wl1273_priv), GFP_KERNEL); | |
ac872d3d | 464 | if (!wl1273) |
3fabe089 | 465 | return -ENOMEM; |
3fabe089 MA |
466 | |
467 | wl1273->mode = WL1273_MODE_BT; | |
468 | wl1273->core = *core; | |
469 | ||
470 | snd_soc_codec_set_drvdata(codec, wl1273); | |
3fabe089 | 471 | |
c8b5d089 | 472 | return 0; |
3fabe089 MA |
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, | |
e29deb48 | 488 | |
c8b5d089 LPC |
489 | .controls = wl1273_controls, |
490 | .num_controls = ARRAY_SIZE(wl1273_controls), | |
e29deb48 MB |
491 | .dapm_widgets = wl1273_dapm_widgets, |
492 | .num_dapm_widgets = ARRAY_SIZE(wl1273_dapm_widgets), | |
493 | .dapm_routes = wl1273_dapm_routes, | |
494 | .num_dapm_routes = ARRAY_SIZE(wl1273_dapm_routes), | |
3fabe089 MA |
495 | }; |
496 | ||
7a79e94e | 497 | static int wl1273_platform_probe(struct platform_device *pdev) |
3fabe089 MA |
498 | { |
499 | return snd_soc_register_codec(&pdev->dev, &soc_codec_dev_wl1273, | |
500 | &wl1273_dai, 1); | |
501 | } | |
502 | ||
7a79e94e | 503 | static int wl1273_platform_remove(struct platform_device *pdev) |
3fabe089 MA |
504 | { |
505 | snd_soc_unregister_codec(&pdev->dev); | |
506 | return 0; | |
507 | } | |
508 | ||
509 | MODULE_ALIAS("platform:wl1273-codec"); | |
510 | ||
511 | static struct platform_driver wl1273_platform_driver = { | |
512 | .driver = { | |
513 | .name = "wl1273-codec", | |
3fabe089 MA |
514 | }, |
515 | .probe = wl1273_platform_probe, | |
7a79e94e | 516 | .remove = wl1273_platform_remove, |
3fabe089 MA |
517 | }; |
518 | ||
5bbcc3c0 | 519 | module_platform_driver(wl1273_platform_driver); |
3fabe089 MA |
520 | |
521 | MODULE_AUTHOR("Matti Aaltonen <matti.j.aaltonen@nokia.com>"); | |
522 | MODULE_DESCRIPTION("ASoC WL1273 codec driver"); | |
523 | MODULE_LICENSE("GPL"); |