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ASoC: wm8994: playback => capture
[deliverable/linux.git] / sound / soc / codecs / wm8960.c
CommitLineData
f2644a2c
MB		 1/*
2 * wm8960.c -- WM8960 ALSA SoC Audio driver
3 *
4 * Author: Liam Girdwood
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 */
10
11#include <linux/module.h>
12#include <linux/moduleparam.h>
13#include <linux/init.h>
14#include <linux/delay.h>
15#include <linux/pm.h>
16#include <linux/i2c.h>
17#include <linux/platform_device.h>
18#include <sound/core.h>
19#include <sound/pcm.h>
20#include <sound/pcm_params.h>
21#include <sound/soc.h>
22#include <sound/soc-dapm.h>
23#include <sound/initval.h>
24#include <sound/tlv.h>
25
26#include "wm8960.h"
27
28#define AUDIO_NAME "wm8960"
29
30struct snd_soc_codec_device soc_codec_dev_wm8960;
31
32/* R25 - Power 1 */
33#define WM8960_VREF 0x40
34
35/* R28 - Anti-pop 1 */
36#define WM8960_POBCTRL 0x80
37#define WM8960_BUFDCOPEN 0x10
38#define WM8960_BUFIOEN 0x08
39#define WM8960_SOFT_ST 0x04
40#define WM8960_HPSTBY 0x01
41
42/* R29 - Anti-pop 2 */
43#define WM8960_DISOP 0x40
44
45/*
46 * wm8960 register cache
47 * We can't read the WM8960 register space when we are
48 * using 2 wire for device control, so we cache them instead.
49 */
50static const u16 wm8960_reg[WM8960_CACHEREGNUM] = {
51 0x0097, 0x0097, 0x0000, 0x0000,
52 0x0000, 0x0008, 0x0000, 0x000a,
53 0x01c0, 0x0000, 0x00ff, 0x00ff,
54 0x0000, 0x0000, 0x0000, 0x0000,
55 0x0000, 0x007b, 0x0100, 0x0032,
56 0x0000, 0x00c3, 0x00c3, 0x01c0,
57 0x0000, 0x0000, 0x0000, 0x0000,
58 0x0000, 0x0000, 0x0000, 0x0000,
59 0x0100, 0x0100, 0x0050, 0x0050,
60 0x0050, 0x0050, 0x0000, 0x0000,
61 0x0000, 0x0000, 0x0040, 0x0000,
62 0x0000, 0x0050, 0x0050, 0x0000,
63 0x0002, 0x0037, 0x004d, 0x0080,
64 0x0008, 0x0031, 0x0026, 0x00e9,
65};
66
67struct wm8960_priv {
68 u16 reg_cache[WM8960_CACHEREGNUM];
69 struct snd_soc_codec codec;
70};
71
17a52fd6 72#define wm8960_reset(c) snd_soc_write(c, WM8960_RESET, 0)
f2644a2c
MB		 73
74/* enumerated controls */
75static const char *wm8960_deemph[] = {"None", "32Khz", "44.1Khz", "48Khz"};
76static const char *wm8960_polarity[] = {"No Inversion", "Left Inverted",
77 "Right Inverted", "Stereo Inversion"};
78static const char *wm8960_3d_upper_cutoff[] = {"High", "Low"};
79static const char *wm8960_3d_lower_cutoff[] = {"Low", "High"};
80static const char *wm8960_alcfunc[] = {"Off", "Right", "Left", "Stereo"};
81static const char *wm8960_alcmode[] = {"ALC", "Limiter"};
82
83static const struct soc_enum wm8960_enum[] = {
84 SOC_ENUM_SINGLE(WM8960_DACCTL1, 1, 4, wm8960_deemph),
85 SOC_ENUM_SINGLE(WM8960_DACCTL1, 5, 4, wm8960_polarity),
86 SOC_ENUM_SINGLE(WM8960_DACCTL2, 5, 4, wm8960_polarity),
87 SOC_ENUM_SINGLE(WM8960_3D, 6, 2, wm8960_3d_upper_cutoff),
88 SOC_ENUM_SINGLE(WM8960_3D, 5, 2, wm8960_3d_lower_cutoff),
89 SOC_ENUM_SINGLE(WM8960_ALC1, 7, 4, wm8960_alcfunc),
90 SOC_ENUM_SINGLE(WM8960_ALC3, 8, 2, wm8960_alcmode),
91};
92
93static const DECLARE_TLV_DB_SCALE(adc_tlv, -9700, 50, 0);
94static const DECLARE_TLV_DB_SCALE(dac_tlv, -12700, 50, 1);
95static const DECLARE_TLV_DB_SCALE(bypass_tlv, -2100, 300, 0);
96static const DECLARE_TLV_DB_SCALE(out_tlv, -12100, 100, 1);
97
98static const struct snd_kcontrol_new wm8960_snd_controls[] = {
99SOC_DOUBLE_R_TLV("Capture Volume", WM8960_LINVOL, WM8960_RINVOL,
100 0, 63, 0, adc_tlv),
101SOC_DOUBLE_R("Capture Volume ZC Switch", WM8960_LINVOL, WM8960_RINVOL,
102 6, 1, 0),
103SOC_DOUBLE_R("Capture Switch", WM8960_LINVOL, WM8960_RINVOL,
104 7, 1, 0),
105
106SOC_DOUBLE_R_TLV("Playback Volume", WM8960_LDAC, WM8960_RDAC,
107 0, 255, 0, dac_tlv),
108
109SOC_DOUBLE_R_TLV("Headphone Playback Volume", WM8960_LOUT1, WM8960_ROUT1,
110 0, 127, 0, out_tlv),
111SOC_DOUBLE_R("Headphone Playback ZC Switch", WM8960_LOUT1, WM8960_ROUT1,
112 7, 1, 0),
113
114SOC_DOUBLE_R_TLV("Speaker Playback Volume", WM8960_LOUT2, WM8960_ROUT2,
115 0, 127, 0, out_tlv),
116SOC_DOUBLE_R("Speaker Playback ZC Switch", WM8960_LOUT2, WM8960_ROUT2,
117 7, 1, 0),
118SOC_SINGLE("Speaker DC Volume", WM8960_CLASSD3, 3, 5, 0),
119SOC_SINGLE("Speaker AC Volume", WM8960_CLASSD3, 0, 5, 0),
120
121SOC_SINGLE("PCM Playback -6dB Switch", WM8960_DACCTL1, 7, 1, 0),
122SOC_ENUM("ADC Polarity", wm8960_enum[1]),
123SOC_ENUM("Playback De-emphasis", wm8960_enum[0]),
124SOC_SINGLE("ADC High Pass Filter Switch", WM8960_DACCTL1, 0, 1, 0),
125
126SOC_ENUM("DAC Polarity", wm8960_enum[2]),
127
128SOC_ENUM("3D Filter Upper Cut-Off", wm8960_enum[3]),
129SOC_ENUM("3D Filter Lower Cut-Off", wm8960_enum[4]),
130SOC_SINGLE("3D Volume", WM8960_3D, 1, 15, 0),
131SOC_SINGLE("3D Switch", WM8960_3D, 0, 1, 0),
132
133SOC_ENUM("ALC Function", wm8960_enum[5]),
134SOC_SINGLE("ALC Max Gain", WM8960_ALC1, 4, 7, 0),
135SOC_SINGLE("ALC Target", WM8960_ALC1, 0, 15, 1),
136SOC_SINGLE("ALC Min Gain", WM8960_ALC2, 4, 7, 0),
137SOC_SINGLE("ALC Hold Time", WM8960_ALC2, 0, 15, 0),
138SOC_ENUM("ALC Mode", wm8960_enum[6]),
139SOC_SINGLE("ALC Decay", WM8960_ALC3, 4, 15, 0),
140SOC_SINGLE("ALC Attack", WM8960_ALC3, 0, 15, 0),
141
142SOC_SINGLE("Noise Gate Threshold", WM8960_NOISEG, 3, 31, 0),
143SOC_SINGLE("Noise Gate Switch", WM8960_NOISEG, 0, 1, 0),
144
145SOC_DOUBLE_R("ADC PCM Capture Volume", WM8960_LINPATH, WM8960_RINPATH,
146 0, 127, 0),
147
148SOC_SINGLE_TLV("Left Output Mixer Boost Bypass Volume",
149 WM8960_BYPASS1, 4, 7, 1, bypass_tlv),
150SOC_SINGLE_TLV("Left Output Mixer LINPUT3 Volume",
151 WM8960_LOUTMIX, 4, 7, 1, bypass_tlv),
152SOC_SINGLE_TLV("Right Output Mixer Boost Bypass Volume",
153 WM8960_BYPASS2, 4, 7, 1, bypass_tlv),
154SOC_SINGLE_TLV("Right Output Mixer RINPUT3 Volume",
155 WM8960_ROUTMIX, 4, 7, 1, bypass_tlv),
156};
157
158static const struct snd_kcontrol_new wm8960_lin_boost[] = {
159SOC_DAPM_SINGLE("LINPUT2 Switch", WM8960_LINPATH, 6, 1, 0),
160SOC_DAPM_SINGLE("LINPUT3 Switch", WM8960_LINPATH, 7, 1, 0),
161SOC_DAPM_SINGLE("LINPUT1 Switch", WM8960_LINPATH, 8, 1, 0),
162};
163
164static const struct snd_kcontrol_new wm8960_lin[] = {
165SOC_DAPM_SINGLE("Boost Switch", WM8960_LINPATH, 3, 1, 0),
166};
167
168static const struct snd_kcontrol_new wm8960_rin_boost[] = {
169SOC_DAPM_SINGLE("RINPUT2 Switch", WM8960_RINPATH, 6, 1, 0),
170SOC_DAPM_SINGLE("RINPUT3 Switch", WM8960_RINPATH, 7, 1, 0),
171SOC_DAPM_SINGLE("RINPUT1 Switch", WM8960_RINPATH, 8, 1, 0),
172};
173
174static const struct snd_kcontrol_new wm8960_rin[] = {
175SOC_DAPM_SINGLE("Boost Switch", WM8960_RINPATH, 3, 1, 0),
176};
177
178static const struct snd_kcontrol_new wm8960_loutput_mixer[] = {
179SOC_DAPM_SINGLE("PCM Playback Switch", WM8960_LOUTMIX, 8, 1, 0),
180SOC_DAPM_SINGLE("LINPUT3 Switch", WM8960_LOUTMIX, 7, 1, 0),
181SOC_DAPM_SINGLE("Boost Bypass Switch", WM8960_BYPASS1, 7, 1, 0),
182};
183
184static const struct snd_kcontrol_new wm8960_routput_mixer[] = {
185SOC_DAPM_SINGLE("PCM Playback Switch", WM8960_ROUTMIX, 8, 1, 0),
186SOC_DAPM_SINGLE("RINPUT3 Switch", WM8960_ROUTMIX, 7, 1, 0),
187SOC_DAPM_SINGLE("Boost Bypass Switch", WM8960_BYPASS2, 7, 1, 0),
188};
189
190static const struct snd_kcontrol_new wm8960_mono_out[] = {
191SOC_DAPM_SINGLE("Left Switch", WM8960_MONOMIX1, 7, 1, 0),
192SOC_DAPM_SINGLE("Right Switch", WM8960_MONOMIX2, 7, 1, 0),
193};
194
195static const struct snd_soc_dapm_widget wm8960_dapm_widgets[] = {
196SND_SOC_DAPM_INPUT("LINPUT1"),
197SND_SOC_DAPM_INPUT("RINPUT1"),
198SND_SOC_DAPM_INPUT("LINPUT2"),
199SND_SOC_DAPM_INPUT("RINPUT2"),
200SND_SOC_DAPM_INPUT("LINPUT3"),
201SND_SOC_DAPM_INPUT("RINPUT3"),
202
203SND_SOC_DAPM_MICBIAS("MICB", WM8960_POWER1, 1, 0),
204
205SND_SOC_DAPM_MIXER("Left Boost Mixer", WM8960_POWER1, 5, 0,
206 wm8960_lin_boost, ARRAY_SIZE(wm8960_lin_boost)),
207SND_SOC_DAPM_MIXER("Right Boost Mixer", WM8960_POWER1, 4, 0,
208 wm8960_rin_boost, ARRAY_SIZE(wm8960_rin_boost)),
209
210SND_SOC_DAPM_MIXER("Left Input Mixer", WM8960_POWER3, 5, 0,
211 wm8960_lin, ARRAY_SIZE(wm8960_lin)),
212SND_SOC_DAPM_MIXER("Right Input Mixer", WM8960_POWER3, 4, 0,
213 wm8960_rin, ARRAY_SIZE(wm8960_rin)),
214
215SND_SOC_DAPM_ADC("Left ADC", "Capture", WM8960_POWER2, 3, 0),
216SND_SOC_DAPM_ADC("Right ADC", "Capture", WM8960_POWER2, 2, 0),
217
218SND_SOC_DAPM_DAC("Left DAC", "Playback", WM8960_POWER2, 8, 0),
219SND_SOC_DAPM_DAC("Right DAC", "Playback", WM8960_POWER2, 7, 0),
220
221SND_SOC_DAPM_MIXER("Left Output Mixer", WM8960_POWER3, 3, 0,
222 &wm8960_loutput_mixer[0],
223 ARRAY_SIZE(wm8960_loutput_mixer)),
224SND_SOC_DAPM_MIXER("Right Output Mixer", WM8960_POWER3, 2, 0,
225 &wm8960_routput_mixer[0],
226 ARRAY_SIZE(wm8960_routput_mixer)),
227
228SND_SOC_DAPM_MIXER("Mono Output Mixer", WM8960_POWER2, 1, 0,
229 &wm8960_mono_out[0],
230 ARRAY_SIZE(wm8960_mono_out)),
231
232SND_SOC_DAPM_PGA("LOUT1 PGA", WM8960_POWER2, 6, 0, NULL, 0),
233SND_SOC_DAPM_PGA("ROUT1 PGA", WM8960_POWER2, 5, 0, NULL, 0),
234
235SND_SOC_DAPM_PGA("Left Speaker PGA", WM8960_POWER2, 4, 0, NULL, 0),
236SND_SOC_DAPM_PGA("Right Speaker PGA", WM8960_POWER2, 3, 0, NULL, 0),
237
238SND_SOC_DAPM_PGA("Right Speaker Output", WM8960_CLASSD1, 7, 0, NULL, 0),
239SND_SOC_DAPM_PGA("Left Speaker Output", WM8960_CLASSD1, 6, 0, NULL, 0),
240
241SND_SOC_DAPM_OUTPUT("SPK_LP"),
242SND_SOC_DAPM_OUTPUT("SPK_LN"),
243SND_SOC_DAPM_OUTPUT("HP_L"),
244SND_SOC_DAPM_OUTPUT("HP_R"),
245SND_SOC_DAPM_OUTPUT("SPK_RP"),
246SND_SOC_DAPM_OUTPUT("SPK_RN"),
247SND_SOC_DAPM_OUTPUT("OUT3"),
248};
249
250static const struct snd_soc_dapm_route audio_paths[] = {
251 { "Left Boost Mixer", "LINPUT1 Switch", "LINPUT1" },
252 { "Left Boost Mixer", "LINPUT2 Switch", "LINPUT2" },
253 { "Left Boost Mixer", "LINPUT3 Switch", "LINPUT3" },
254
255 { "Left Input Mixer", "Boost Switch", "Left Boost Mixer", },
256 { "Left Input Mixer", NULL, "LINPUT1", }, /* Really Boost Switch */
257 { "Left Input Mixer", NULL, "LINPUT2" },
258 { "Left Input Mixer", NULL, "LINPUT3" },
259
260 { "Right Boost Mixer", "RINPUT1 Switch", "RINPUT1" },
261 { "Right Boost Mixer", "RINPUT2 Switch", "RINPUT2" },
262 { "Right Boost Mixer", "RINPUT3 Switch", "RINPUT3" },
263
264 { "Right Input Mixer", "Boost Switch", "Right Boost Mixer", },
265 { "Right Input Mixer", NULL, "RINPUT1", }, /* Really Boost Switch */
266 { "Right Input Mixer", NULL, "RINPUT2" },
267 { "Right Input Mixer", NULL, "LINPUT3" },
268
269 { "Left ADC", NULL, "Left Input Mixer" },
270 { "Right ADC", NULL, "Right Input Mixer" },
271
272 { "Left Output Mixer", "LINPUT3 Switch", "LINPUT3" },
273 { "Left Output Mixer", "Boost Bypass Switch", "Left Boost Mixer"} ,
274 { "Left Output Mixer", "PCM Playback Switch", "Left DAC" },
275
276 { "Right Output Mixer", "RINPUT3 Switch", "RINPUT3" },
277 { "Right Output Mixer", "Boost Bypass Switch", "Right Boost Mixer" } ,
278 { "Right Output Mixer", "PCM Playback Switch", "Right DAC" },
279
280 { "Mono Output Mixer", "Left Switch", "Left Output Mixer" },
281 { "Mono Output Mixer", "Right Switch", "Right Output Mixer" },
282
283 { "LOUT1 PGA", NULL, "Left Output Mixer" },
284 { "ROUT1 PGA", NULL, "Right Output Mixer" },
285
286 { "HP_L", NULL, "LOUT1 PGA" },
287 { "HP_R", NULL, "ROUT1 PGA" },
288
289 { "Left Speaker PGA", NULL, "Left Output Mixer" },
290 { "Right Speaker PGA", NULL, "Right Output Mixer" },
291
292 { "Left Speaker Output", NULL, "Left Speaker PGA" },
293 { "Right Speaker Output", NULL, "Right Speaker PGA" },
294
295 { "SPK_LN", NULL, "Left Speaker Output" },
296 { "SPK_LP", NULL, "Left Speaker Output" },
297 { "SPK_RN", NULL, "Right Speaker Output" },
298 { "SPK_RP", NULL, "Right Speaker Output" },
299
300 { "OUT3", NULL, "Mono Output Mixer", }
301};
302
303static int wm8960_add_widgets(struct snd_soc_codec *codec)
304{
305 snd_soc_dapm_new_controls(codec, wm8960_dapm_widgets,
306 ARRAY_SIZE(wm8960_dapm_widgets));
307
308 snd_soc_dapm_add_routes(codec, audio_paths, ARRAY_SIZE(audio_paths));
309
f2644a2c
MB		 310 return 0;
311}
312
313static int wm8960_set_dai_fmt(struct snd_soc_dai *codec_dai,
314 unsigned int fmt)
315{
316 struct snd_soc_codec *codec = codec_dai->codec;
317 u16 iface = 0;
318
319 /* set master/slave audio interface */
320 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
321 case SND_SOC_DAIFMT_CBM_CFM:
322 iface |= 0x0040;
323 break;
324 case SND_SOC_DAIFMT_CBS_CFS:
325 break;
326 default:
327 return -EINVAL;
328 }
329
330 /* interface format */
331 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
332 case SND_SOC_DAIFMT_I2S:
333 iface |= 0x0002;
334 break;
335 case SND_SOC_DAIFMT_RIGHT_J:
336 break;
337 case SND_SOC_DAIFMT_LEFT_J:
338 iface |= 0x0001;
339 break;
340 case SND_SOC_DAIFMT_DSP_A:
341 iface |= 0x0003;
342 break;
343 case SND_SOC_DAIFMT_DSP_B:
344 iface |= 0x0013;
345 break;
346 default:
347 return -EINVAL;
348 }
349
350 /* clock inversion */
351 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
352 case SND_SOC_DAIFMT_NB_NF:
353 break;
354 case SND_SOC_DAIFMT_IB_IF:
355 iface |= 0x0090;
356 break;
357 case SND_SOC_DAIFMT_IB_NF:
358 iface |= 0x0080;
359 break;
360 case SND_SOC_DAIFMT_NB_IF:
361 iface |= 0x0010;
362 break;
363 default:
364 return -EINVAL;
365 }
366
367 /* set iface */
17a52fd6 368 snd_soc_write(codec, WM8960_IFACE1, iface);
f2644a2c
MB		 369 return 0;
370}
371
372static int wm8960_hw_params(struct snd_pcm_substream *substream,
373 struct snd_pcm_hw_params *params,
374 struct snd_soc_dai *dai)
375{
376 struct snd_soc_pcm_runtime *rtd = substream->private_data;
377 struct snd_soc_device *socdev = rtd->socdev;
378 struct snd_soc_codec *codec = socdev->card->codec;
17a52fd6 379 u16 iface = snd_soc_read(codec, WM8960_IFACE1) & 0xfff3;
f2644a2c
MB		 380
381 /* bit size */
382 switch (params_format(params)) {
383 case SNDRV_PCM_FORMAT_S16_LE:
384 break;
385 case SNDRV_PCM_FORMAT_S20_3LE:
386 iface |= 0x0004;
387 break;
388 case SNDRV_PCM_FORMAT_S24_LE:
389 iface |= 0x0008;
390 break;
391 }
392
393 /* set iface */
17a52fd6 394 snd_soc_write(codec, WM8960_IFACE1, iface);
f2644a2c
MB		 395 return 0;
396}
397
398static int wm8960_mute(struct snd_soc_dai *dai, int mute)
399{
400 struct snd_soc_codec *codec = dai->codec;
17a52fd6 401 u16 mute_reg = snd_soc_read(codec, WM8960_DACCTL1) & 0xfff7;
f2644a2c
MB		 402
403 if (mute)
17a52fd6 404 snd_soc_write(codec, WM8960_DACCTL1, mute_reg | 0x8);
f2644a2c 405 else
17a52fd6 406 snd_soc_write(codec, WM8960_DACCTL1, mute_reg);
f2644a2c
MB		 407 return 0;
408}
409
410static int wm8960_set_bias_level(struct snd_soc_codec *codec,
411 enum snd_soc_bias_level level)
412{
413 struct wm8960_data *pdata = codec->dev->platform_data;
414 u16 reg;
415
416 switch (level) {
417 case SND_SOC_BIAS_ON:
418 break;
419
420 case SND_SOC_BIAS_PREPARE:
421 /* Set VMID to 2x50k */
17a52fd6 422 reg = snd_soc_read(codec, WM8960_POWER1);
f2644a2c
MB		 423 reg &= ~0x180;
424 reg |= 0x80;
17a52fd6 425 snd_soc_write(codec, WM8960_POWER1, reg);
f2644a2c
MB		 426 break;
427
428 case SND_SOC_BIAS_STANDBY:
429 if (codec->bias_level == SND_SOC_BIAS_OFF) {
430 /* Enable anti-pop features */
17a52fd6 431 snd_soc_write(codec, WM8960_APOP1,
f2644a2c
MB		 432 WM8960_POBCTRL | WM8960_SOFT_ST |
433 WM8960_BUFDCOPEN | WM8960_BUFIOEN);
434
435 /* Discharge HP output */
436 reg = WM8960_DISOP;
437 if (pdata)
438 reg |= pdata->dres << 4;
17a52fd6 439 snd_soc_write(codec, WM8960_APOP2, reg);
f2644a2c
MB		 440
441 msleep(400);
442
17a52fd6 443 snd_soc_write(codec, WM8960_APOP2, 0);
f2644a2c
MB		 444
445 /* Enable & ramp VMID at 2x50k */
17a52fd6 446 reg = snd_soc_read(codec, WM8960_POWER1);
f2644a2c 447 reg |= 0x80;
17a52fd6 448 snd_soc_write(codec, WM8960_POWER1, reg);
f2644a2c
MB		 449 msleep(100);
450
451 /* Enable VREF */
17a52fd6 452 snd_soc_write(codec, WM8960_POWER1, reg | WM8960_VREF);
f2644a2c
MB		 453
454 /* Disable anti-pop features */
17a52fd6 455 snd_soc_write(codec, WM8960_APOP1, WM8960_BUFIOEN);
f2644a2c
MB		 456 }
457
458 /* Set VMID to 2x250k */
17a52fd6 459 reg = snd_soc_read(codec, WM8960_POWER1);
f2644a2c
MB		 460 reg &= ~0x180;
461 reg |= 0x100;
17a52fd6 462 snd_soc_write(codec, WM8960_POWER1, reg);
f2644a2c
MB		 463 break;
464
465 case SND_SOC_BIAS_OFF:
466 /* Enable anti-pop features */
17a52fd6 467 snd_soc_write(codec, WM8960_APOP1,
f2644a2c
MB		 468 WM8960_POBCTRL | WM8960_SOFT_ST |
469 WM8960_BUFDCOPEN | WM8960_BUFIOEN);
470
471 /* Disable VMID and VREF, let them discharge */
17a52fd6 472 snd_soc_write(codec, WM8960_POWER1, 0);
f2644a2c
MB		 473 msleep(600);
474
17a52fd6 475 snd_soc_write(codec, WM8960_APOP1, 0);
f2644a2c
MB		 476 break;
477 }
478
479 codec->bias_level = level;
480
481 return 0;
482}
483
484/* PLL divisors */
485struct _pll_div {
486 u32 pre_div:1;
487 u32 n:4;
488 u32 k:24;
489};
490
491/* The size in bits of the pll divide multiplied by 10
492 * to allow rounding later */
493#define FIXED_PLL_SIZE ((1 << 24) * 10)
494
495static int pll_factors(unsigned int source, unsigned int target,
496 struct _pll_div *pll_div)
497{
498 unsigned long long Kpart;
499 unsigned int K, Ndiv, Nmod;
500
501 pr_debug("WM8960 PLL: setting %dHz->%dHz\n", source, target);
502
503 /* Scale up target to PLL operating frequency */
504 target *= 4;
505
506 Ndiv = target / source;
507 if (Ndiv < 6) {
508 source >>= 1;
509 pll_div->pre_div = 1;
510 Ndiv = target / source;
511 } else
512 pll_div->pre_div = 0;
513
514 if ((Ndiv < 6) || (Ndiv > 12)) {
515 pr_err("WM8960 PLL: Unsupported N=%d\n", Ndiv);
516 return -EINVAL;
517 }
518
519 pll_div->n = Ndiv;
520 Nmod = target % source;
521 Kpart = FIXED_PLL_SIZE * (long long)Nmod;
522
523 do_div(Kpart, source);
524
525 K = Kpart & 0xFFFFFFFF;
526
527 /* Check if we need to round */
528 if ((K % 10) >= 5)
529 K += 5;
530
531 /* Move down to proper range now rounding is done */
532 K /= 10;
533
534 pll_div->k = K;
535
536 pr_debug("WM8960 PLL: N=%x K=%x pre_div=%d\n",
537 pll_div->n, pll_div->k, pll_div->pre_div);
538
539 return 0;
540}
541
85488037
MB		 542static int wm8960_set_dai_pll(struct snd_soc_dai *codec_dai, int pll_id,
543 int source, unsigned int freq_in, unsigned int freq_out)
f2644a2c
MB		 544{
545 struct snd_soc_codec *codec = codec_dai->codec;
546 u16 reg;
547 static struct _pll_div pll_div;
548 int ret;
549
550 if (freq_in && freq_out) {
551 ret = pll_factors(freq_in, freq_out, &pll_div);
552 if (ret != 0)
553 return ret;
554 }
555
556 /* Disable the PLL: even if we are changing the frequency the
557 * PLL needs to be disabled while we do so. */
17a52fd6
MB		 558 snd_soc_write(codec, WM8960_CLOCK1,
559 snd_soc_read(codec, WM8960_CLOCK1) & ~1);
560 snd_soc_write(codec, WM8960_POWER2,
561 snd_soc_read(codec, WM8960_POWER2) & ~1);
f2644a2c
MB		 562
563 if (!freq_in || !freq_out)
564 return 0;
565
17a52fd6 566 reg = snd_soc_read(codec, WM8960_PLL1) & ~0x3f;
f2644a2c
MB		 567 reg |= pll_div.pre_div << 4;
568 reg |= pll_div.n;
569
570 if (pll_div.k) {
571 reg |= 0x20;
572
17a52fd6
MB		 573 snd_soc_write(codec, WM8960_PLL2, (pll_div.k >> 18) & 0x3f);
574 snd_soc_write(codec, WM8960_PLL3, (pll_div.k >> 9) & 0x1ff);
575 snd_soc_write(codec, WM8960_PLL4, pll_div.k & 0x1ff);
f2644a2c 576 }
17a52fd6 577 snd_soc_write(codec, WM8960_PLL1, reg);
f2644a2c
MB		 578
579 /* Turn it on */
17a52fd6
MB		 580 snd_soc_write(codec, WM8960_POWER2,
581 snd_soc_read(codec, WM8960_POWER2) | 1);
f2644a2c 582 msleep(250);
17a52fd6
MB		 583 snd_soc_write(codec, WM8960_CLOCK1,
584 snd_soc_read(codec, WM8960_CLOCK1) | 1);
f2644a2c
MB		 585
586 return 0;
587}
588
589static int wm8960_set_dai_clkdiv(struct snd_soc_dai *codec_dai,
590 int div_id, int div)
591{
592 struct snd_soc_codec *codec = codec_dai->codec;
593 u16 reg;
594
595 switch (div_id) {
596 case WM8960_SYSCLKSEL:
17a52fd6
MB		 597 reg = snd_soc_read(codec, WM8960_CLOCK1) & 0x1fe;
598 snd_soc_write(codec, WM8960_CLOCK1, reg | div);
f2644a2c
MB		 599 break;
600 case WM8960_SYSCLKDIV:
17a52fd6
MB		 601 reg = snd_soc_read(codec, WM8960_CLOCK1) & 0x1f9;
602 snd_soc_write(codec, WM8960_CLOCK1, reg | div);
f2644a2c
MB		 603 break;
604 case WM8960_DACDIV:
17a52fd6
MB		 605 reg = snd_soc_read(codec, WM8960_CLOCK1) & 0x1c7;
606 snd_soc_write(codec, WM8960_CLOCK1, reg | div);
f2644a2c
MB		 607 break;
608 case WM8960_OPCLKDIV:
17a52fd6
MB		 609 reg = snd_soc_read(codec, WM8960_PLL1) & 0x03f;
610 snd_soc_write(codec, WM8960_PLL1, reg | div);
f2644a2c
MB		 611 break;
612 case WM8960_DCLKDIV:
17a52fd6
MB		 613 reg = snd_soc_read(codec, WM8960_CLOCK2) & 0x03f;
614 snd_soc_write(codec, WM8960_CLOCK2, reg | div);
f2644a2c
MB		 615 break;
616 case WM8960_TOCLKSEL:
17a52fd6
MB		 617 reg = snd_soc_read(codec, WM8960_ADDCTL1) & 0x1fd;
618 snd_soc_write(codec, WM8960_ADDCTL1, reg | div);
f2644a2c
MB		 619 break;
620 default:
621 return -EINVAL;
622 }
623
624 return 0;
625}
626
627#define WM8960_RATES SNDRV_PCM_RATE_8000_48000
628
629#define WM8960_FORMATS \
630 (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \
631 SNDRV_PCM_FMTBIT_S24_LE)
632
633static struct snd_soc_dai_ops wm8960_dai_ops = {
634 .hw_params = wm8960_hw_params,
635 .digital_mute = wm8960_mute,
636 .set_fmt = wm8960_set_dai_fmt,
637 .set_clkdiv = wm8960_set_dai_clkdiv,
638 .set_pll = wm8960_set_dai_pll,
639};
640
641struct snd_soc_dai wm8960_dai = {
642 .name = "WM8960",
643 .playback = {
644 .stream_name = "Playback",
645 .channels_min = 1,
646 .channels_max = 2,
647 .rates = WM8960_RATES,
648 .formats = WM8960_FORMATS,},
649 .capture = {
650 .stream_name = "Capture",
651 .channels_min = 1,
652 .channels_max = 2,
653 .rates = WM8960_RATES,
654 .formats = WM8960_FORMATS,},
655 .ops = &wm8960_dai_ops,
656 .symmetric_rates = 1,
657};
658EXPORT_SYMBOL_GPL(wm8960_dai);
659
660static int wm8960_suspend(struct platform_device *pdev, pm_message_t state)
661{
662 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
663 struct snd_soc_codec *codec = socdev->card->codec;
664
665 wm8960_set_bias_level(codec, SND_SOC_BIAS_OFF);
666 return 0;
667}
668
669static int wm8960_resume(struct platform_device *pdev)
670{
671 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
672 struct snd_soc_codec *codec = socdev->card->codec;
673 int i;
674 u8 data[2];
675 u16 *cache = codec->reg_cache;
676
677 /* Sync reg_cache with the hardware */
678 for (i = 0; i < ARRAY_SIZE(wm8960_reg); i++) {
679 data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001);
680 data[1] = cache[i] & 0x00ff;
681 codec->hw_write(codec->control_data, data, 2);
682 }
683
684 wm8960_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
685 wm8960_set_bias_level(codec, codec->suspend_bias_level);
686 return 0;
687}
688
689static struct snd_soc_codec *wm8960_codec;
690
691static int wm8960_probe(struct platform_device *pdev)
692{
693 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
694 struct snd_soc_codec *codec;
695 int ret = 0;
696
697 if (wm8960_codec == NULL) {
698 dev_err(&pdev->dev, "Codec device not registered\n");
699 return -ENODEV;
700 }
701
702 socdev->card->codec = wm8960_codec;
703 codec = wm8960_codec;
704
705 /* register pcms */
706 ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
707 if (ret < 0) {
708 dev_err(codec->dev, "failed to create pcms: %d\n", ret);
709 goto pcm_err;
710 }
711
712 snd_soc_add_controls(codec, wm8960_snd_controls,
713 ARRAY_SIZE(wm8960_snd_controls));
714 wm8960_add_widgets(codec);
f2644a2c
MB		 715
716 return ret;
717
f2644a2c
MB		 718pcm_err:
719 return ret;
720}
721
722/* power down chip */
723static int wm8960_remove(struct platform_device *pdev)
724{
725 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
726
727 snd_soc_free_pcms(socdev);
728 snd_soc_dapm_free(socdev);
729
730 return 0;
731}
732
733struct snd_soc_codec_device soc_codec_dev_wm8960 = {
734 .probe = wm8960_probe,
735 .remove = wm8960_remove,
736 .suspend = wm8960_suspend,
737 .resume = wm8960_resume,
738};
739EXPORT_SYMBOL_GPL(soc_codec_dev_wm8960);
740
7084a42b
MB		 741static int wm8960_register(struct wm8960_priv *wm8960,
742 enum snd_soc_control_type control)
f2644a2c
MB		 743{
744 struct wm8960_data *pdata = wm8960->codec.dev->platform_data;
745 struct snd_soc_codec *codec = &wm8960->codec;
746 int ret;
747 u16 reg;
748
749 if (wm8960_codec) {
750 dev_err(codec->dev, "Another WM8960 is registered\n");
1a01417e
MB		 751 ret = -EINVAL;
752 goto err;
f2644a2c
MB		 753 }
754
755 if (!pdata) {
756 dev_warn(codec->dev, "No platform data supplied\n");
757 } else {
758 if (pdata->dres > WM8960_DRES_MAX) {
759 dev_err(codec->dev, "Invalid DRES: %d\n", pdata->dres);
760 pdata->dres = 0;
761 }
762 }
763
764 mutex_init(&codec->mutex);
765 INIT_LIST_HEAD(&codec->dapm_widgets);
766 INIT_LIST_HEAD(&codec->dapm_paths);
767
768 codec->private_data = wm8960;
769 codec->name = "WM8960";
770 codec->owner = THIS_MODULE;
f2644a2c
MB		 771 codec->bias_level = SND_SOC_BIAS_OFF;
772 codec->set_bias_level = wm8960_set_bias_level;
773 codec->dai = &wm8960_dai;
774 codec->num_dai = 1;
775 codec->reg_cache_size = WM8960_CACHEREGNUM;
776 codec->reg_cache = &wm8960->reg_cache;
777
778 memcpy(codec->reg_cache, wm8960_reg, sizeof(wm8960_reg));
779
7084a42b 780 ret = snd_soc_codec_set_cache_io(codec, 7, 9, control);
17a52fd6
MB		 781 if (ret < 0) {
782 dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
783 goto err;
784 }
785
f2644a2c
MB		 786 ret = wm8960_reset(codec);
787 if (ret < 0) {
788 dev_err(codec->dev, "Failed to issue reset\n");
1a01417e 789 goto err;
f2644a2c
MB		 790 }
791
792 wm8960_dai.dev = codec->dev;
793
794 wm8960_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
795
796 /* Latch the update bits */
17a52fd6
MB		 797 reg = snd_soc_read(codec, WM8960_LINVOL);
798 snd_soc_write(codec, WM8960_LINVOL, reg | 0x100);
799 reg = snd_soc_read(codec, WM8960_RINVOL);
800 snd_soc_write(codec, WM8960_RINVOL, reg | 0x100);
801 reg = snd_soc_read(codec, WM8960_LADC);
802 snd_soc_write(codec, WM8960_LADC, reg | 0x100);
803 reg = snd_soc_read(codec, WM8960_RADC);
804 snd_soc_write(codec, WM8960_RADC, reg | 0x100);
805 reg = snd_soc_read(codec, WM8960_LDAC);
806 snd_soc_write(codec, WM8960_LDAC, reg | 0x100);
807 reg = snd_soc_read(codec, WM8960_RDAC);
808 snd_soc_write(codec, WM8960_RDAC, reg | 0x100);
809 reg = snd_soc_read(codec, WM8960_LOUT1);
810 snd_soc_write(codec, WM8960_LOUT1, reg | 0x100);
811 reg = snd_soc_read(codec, WM8960_ROUT1);
812 snd_soc_write(codec, WM8960_ROUT1, reg | 0x100);
813 reg = snd_soc_read(codec, WM8960_LOUT2);
814 snd_soc_write(codec, WM8960_LOUT2, reg | 0x100);
815 reg = snd_soc_read(codec, WM8960_ROUT2);
816 snd_soc_write(codec, WM8960_ROUT2, reg | 0x100);
f2644a2c
MB		 817
818 wm8960_codec = codec;
819
820 ret = snd_soc_register_codec(codec);
821 if (ret != 0) {
822 dev_err(codec->dev, "Failed to register codec: %d\n", ret);
1a01417e 823 goto err;
f2644a2c
MB		 824 }
825
826 ret = snd_soc_register_dai(&wm8960_dai);
827 if (ret != 0) {
828 dev_err(codec->dev, "Failed to register DAI: %d\n", ret);
1a01417e 829 goto err_codec;
f2644a2c
MB		 830 }
831
832 return 0;
1a01417e
MB		 833
834err_codec:
835 snd_soc_unregister_codec(codec);
836err:
837 kfree(wm8960);
838 return ret;
f2644a2c
MB		 839}
840
841static void wm8960_unregister(struct wm8960_priv *wm8960)
842{
843 wm8960_set_bias_level(&wm8960->codec, SND_SOC_BIAS_OFF);
844 snd_soc_unregister_dai(&wm8960_dai);
845 snd_soc_unregister_codec(&wm8960->codec);
846 kfree(wm8960);
847 wm8960_codec = NULL;
848}
849
850static __devinit int wm8960_i2c_probe(struct i2c_client *i2c,
851 const struct i2c_device_id *id)
852{
853 struct wm8960_priv *wm8960;
854 struct snd_soc_codec *codec;
855
856 wm8960 = kzalloc(sizeof(struct wm8960_priv), GFP_KERNEL);
857 if (wm8960 == NULL)
858 return -ENOMEM;
859
860 codec = &wm8960->codec;
f2644a2c
MB		 861
862 i2c_set_clientdata(i2c, wm8960);
863 codec->control_data = i2c;
864
865 codec->dev = &i2c->dev;
866
7084a42b 867 return wm8960_register(wm8960, SND_SOC_I2C);
f2644a2c
MB		 868}
869
870static __devexit int wm8960_i2c_remove(struct i2c_client *client)
871{
872 struct wm8960_priv *wm8960 = i2c_get_clientdata(client);
873 wm8960_unregister(wm8960);
874 return 0;
875}
876
877static const struct i2c_device_id wm8960_i2c_id[] = {
878 { "wm8960", 0 },
879 { }
880};
881MODULE_DEVICE_TABLE(i2c, wm8960_i2c_id);
882
883static struct i2c_driver wm8960_i2c_driver = {
884 .driver = {
885 .name = "WM8960 I2C Codec",
886 .owner = THIS_MODULE,
887 },
888 .probe = wm8960_i2c_probe,
889 .remove = __devexit_p(wm8960_i2c_remove),
890 .id_table = wm8960_i2c_id,
891};
892
893static int __init wm8960_modinit(void)
894{
895 int ret;
896
897 ret = i2c_add_driver(&wm8960_i2c_driver);
898 if (ret != 0) {
899 printk(KERN_ERR "Failed to register WM8960 I2C driver: %d\n",
900 ret);
901 }
902
903 return ret;
904}
905module_init(wm8960_modinit);
906
907static void __exit wm8960_exit(void)
908{
909 i2c_del_driver(&wm8960_i2c_driver);
910}
911module_exit(wm8960_exit);
912
913
914MODULE_DESCRIPTION("ASoC WM8960 driver");
915MODULE_AUTHOR("Liam Girdwood");
916MODULE_LICENSE("GPL");
Linux kernel - Deliverables
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