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Linux 2.6.31.8
[linux/fpc-iii.git] / sound / soc / codecs / wm8988.c
blob8c0fdf84aac341bf3718d73f6255f714cd66cb47
1 /*
2 * wm8988.c -- WM8988 ALSA SoC audio driver
3 *
4 * Copyright 2009 Wolfson Microelectronics plc
5 * Copyright 2005 Openedhand Ltd.
6 *
7 * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation.
12 */
13
14 #include <linux/module.h>
15 #include <linux/moduleparam.h>
16 #include <linux/init.h>
17 #include <linux/delay.h>
18 #include <linux/pm.h>
19 #include <linux/i2c.h>
20 #include <linux/spi/spi.h>
21 #include <linux/platform_device.h>
22 #include <sound/core.h>
23 #include <sound/pcm.h>
24 #include <sound/pcm_params.h>
25 #include <sound/tlv.h>
26 #include <sound/soc.h>
27 #include <sound/soc-dapm.h>
28 #include <sound/initval.h>
29
30 #include "wm8988.h"
31
32 /*
33 * wm8988 register cache
34 * We can't read the WM8988 register space when we
35 * are using 2 wire for device control, so we cache them instead.
36 */
37 static const u16 wm8988_reg[] = {
38 0x0097, 0x0097, 0x0079, 0x0079, /* 0 */
39 0x0000, 0x0008, 0x0000, 0x000a, /* 4 */
40 0x0000, 0x0000, 0x00ff, 0x00ff, /* 8 */
41 0x000f, 0x000f, 0x0000, 0x0000, /* 12 */
42 0x0000, 0x007b, 0x0000, 0x0032, /* 16 */
43 0x0000, 0x00c3, 0x00c3, 0x00c0, /* 20 */
44 0x0000, 0x0000, 0x0000, 0x0000, /* 24 */
45 0x0000, 0x0000, 0x0000, 0x0000, /* 28 */
46 0x0000, 0x0000, 0x0050, 0x0050, /* 32 */
47 0x0050, 0x0050, 0x0050, 0x0050, /* 36 */
48 0x0079, 0x0079, 0x0079, /* 40 */
49 };
50
51 /* codec private data */
52 struct wm8988_priv {
53 unsigned int sysclk;
54 struct snd_soc_codec codec;
55 struct snd_pcm_hw_constraint_list *sysclk_constraints;
56 u16 reg_cache[WM8988_NUM_REG];
57 };
58
59
60 /*
61 * read wm8988 register cache
62 */
63 static inline unsigned int wm8988_read_reg_cache(struct snd_soc_codec *codec,
64 unsigned int reg)
65 {
66 u16 *cache = codec->reg_cache;
67 if (reg > WM8988_NUM_REG)
68 return -1;
69 return cache[reg];
70 }
71
72 /*
73 * write wm8988 register cache
74 */
75 static inline void wm8988_write_reg_cache(struct snd_soc_codec *codec,
76 unsigned int reg, unsigned int value)
77 {
78 u16 *cache = codec->reg_cache;
79 if (reg > WM8988_NUM_REG)
80 return;
81 cache[reg] = value;
82 }
83
84 static int wm8988_write(struct snd_soc_codec *codec, unsigned int reg,
85 unsigned int value)
86 {
87 u8 data[2];
88
89 /* data is
90 * D15..D9 WM8753 register offset
91 * D8...D0 register data
92 */
93 data[0] = (reg << 1) | ((value >> 8) & 0x0001);
94 data[1] = value & 0x00ff;
95
96 wm8988_write_reg_cache(codec, reg, value);
97 if (codec->hw_write(codec->control_data, data, 2) == 2)
98 return 0;
99 else
100 return -EIO;
101 }
102
103 #define wm8988_reset(c) wm8988_write(c, WM8988_RESET, 0)
104
105 /*
106 * WM8988 Controls
107 */
108
109 static const char *bass_boost_txt[] = {"Linear Control", "Adaptive Boost"};
110 static const struct soc_enum bass_boost =
111 SOC_ENUM_SINGLE(WM8988_BASS, 7, 2, bass_boost_txt);
112
113 static const char *bass_filter_txt[] = { "130Hz @ 48kHz", "200Hz @ 48kHz" };
114 static const struct soc_enum bass_filter =
115 SOC_ENUM_SINGLE(WM8988_BASS, 6, 2, bass_filter_txt);
116
117 static const char *treble_txt[] = {"8kHz", "4kHz"};
118 static const struct soc_enum treble =
119 SOC_ENUM_SINGLE(WM8988_TREBLE, 6, 2, treble_txt);
120
121 static const char *stereo_3d_lc_txt[] = {"200Hz", "500Hz"};
122 static const struct soc_enum stereo_3d_lc =
123 SOC_ENUM_SINGLE(WM8988_3D, 5, 2, stereo_3d_lc_txt);
124
125 static const char *stereo_3d_uc_txt[] = {"2.2kHz", "1.5kHz"};
126 static const struct soc_enum stereo_3d_uc =
127 SOC_ENUM_SINGLE(WM8988_3D, 6, 2, stereo_3d_uc_txt);
128
129 static const char *stereo_3d_func_txt[] = {"Capture", "Playback"};
130 static const struct soc_enum stereo_3d_func =
131 SOC_ENUM_SINGLE(WM8988_3D, 7, 2, stereo_3d_func_txt);
132
133 static const char *alc_func_txt[] = {"Off", "Right", "Left", "Stereo"};
134 static const struct soc_enum alc_func =
135 SOC_ENUM_SINGLE(WM8988_ALC1, 7, 4, alc_func_txt);
136
137 static const char *ng_type_txt[] = {"Constant PGA Gain",
138 "Mute ADC Output"};
139 static const struct soc_enum ng_type =
140 SOC_ENUM_SINGLE(WM8988_NGATE, 1, 2, ng_type_txt);
141
142 static const char *deemph_txt[] = {"None", "32Khz", "44.1Khz", "48Khz"};
143 static const struct soc_enum deemph =
144 SOC_ENUM_SINGLE(WM8988_ADCDAC, 1, 4, deemph_txt);
145
146 static const char *adcpol_txt[] = {"Normal", "L Invert", "R Invert",
147 "L + R Invert"};
148 static const struct soc_enum adcpol =
149 SOC_ENUM_SINGLE(WM8988_ADCDAC, 5, 4, adcpol_txt);
150
151 static const DECLARE_TLV_DB_SCALE(pga_tlv, -1725, 75, 0);
152 static const DECLARE_TLV_DB_SCALE(adc_tlv, -9750, 50, 1);
153 static const DECLARE_TLV_DB_SCALE(dac_tlv, -12750, 50, 1);
154 static const DECLARE_TLV_DB_SCALE(out_tlv, -12100, 100, 1);
155 static const DECLARE_TLV_DB_SCALE(bypass_tlv, -1500, 300, 0);
156
157 static const struct snd_kcontrol_new wm8988_snd_controls[] = {
158
159 SOC_ENUM("Bass Boost", bass_boost),
160 SOC_ENUM("Bass Filter", bass_filter),
161 SOC_SINGLE("Bass Volume", WM8988_BASS, 0, 15, 1),
162
163 SOC_SINGLE("Treble Volume", WM8988_TREBLE, 0, 15, 0),
164 SOC_ENUM("Treble Cut-off", treble),
165
166 SOC_SINGLE("3D Switch", WM8988_3D, 0, 1, 0),
167 SOC_SINGLE("3D Volume", WM8988_3D, 1, 15, 0),
168 SOC_ENUM("3D Lower Cut-off", stereo_3d_lc),
169 SOC_ENUM("3D Upper Cut-off", stereo_3d_uc),
170 SOC_ENUM("3D Mode", stereo_3d_func),
171
172 SOC_SINGLE("ALC Capture Target Volume", WM8988_ALC1, 0, 7, 0),
173 SOC_SINGLE("ALC Capture Max Volume", WM8988_ALC1, 4, 7, 0),
174 SOC_ENUM("ALC Capture Function", alc_func),
175 SOC_SINGLE("ALC Capture ZC Switch", WM8988_ALC2, 7, 1, 0),
176 SOC_SINGLE("ALC Capture Hold Time", WM8988_ALC2, 0, 15, 0),
177 SOC_SINGLE("ALC Capture Decay Time", WM8988_ALC3, 4, 15, 0),
178 SOC_SINGLE("ALC Capture Attack Time", WM8988_ALC3, 0, 15, 0),
179 SOC_SINGLE("ALC Capture NG Threshold", WM8988_NGATE, 3, 31, 0),
180 SOC_ENUM("ALC Capture NG Type", ng_type),
181 SOC_SINGLE("ALC Capture NG Switch", WM8988_NGATE, 0, 1, 0),
182
183 SOC_SINGLE("ZC Timeout Switch", WM8988_ADCTL1, 0, 1, 0),
184
185 SOC_DOUBLE_R_TLV("Capture Digital Volume", WM8988_LADC, WM8988_RADC,
186 0, 255, 0, adc_tlv),
187 SOC_DOUBLE_R_TLV("Capture Volume", WM8988_LINVOL, WM8988_RINVOL,
188 0, 63, 0, pga_tlv),
189 SOC_DOUBLE_R("Capture ZC Switch", WM8988_LINVOL, WM8988_RINVOL, 6, 1, 0),
190 SOC_DOUBLE_R("Capture Switch", WM8988_LINVOL, WM8988_RINVOL, 7, 1, 1),
191
192 SOC_ENUM("Playback De-emphasis", deemph),
193
194 SOC_ENUM("Capture Polarity", adcpol),
195 SOC_SINGLE("Playback 6dB Attenuate", WM8988_ADCDAC, 7, 1, 0),
196 SOC_SINGLE("Capture 6dB Attenuate", WM8988_ADCDAC, 8, 1, 0),
197
198 SOC_DOUBLE_R_TLV("PCM Volume", WM8988_LDAC, WM8988_RDAC, 0, 255, 0, dac_tlv),
199
200 SOC_SINGLE_TLV("Left Mixer Left Bypass Volume", WM8988_LOUTM1, 4, 7, 1,
201 bypass_tlv),
202 SOC_SINGLE_TLV("Left Mixer Right Bypass Volume", WM8988_LOUTM2, 4, 7, 1,
203 bypass_tlv),
204 SOC_SINGLE_TLV("Right Mixer Left Bypass Volume", WM8988_ROUTM1, 4, 7, 1,
205 bypass_tlv),
206 SOC_SINGLE_TLV("Right Mixer Right Bypass Volume", WM8988_ROUTM2, 4, 7, 1,
207 bypass_tlv),
208
209 SOC_DOUBLE_R("Output 1 Playback ZC Switch", WM8988_LOUT1V,
210 WM8988_ROUT1V, 7, 1, 0),
211 SOC_DOUBLE_R_TLV("Output 1 Playback Volume", WM8988_LOUT1V, WM8988_ROUT1V,
212 0, 127, 0, out_tlv),
213
214 SOC_DOUBLE_R("Output 2 Playback ZC Switch", WM8988_LOUT2V,
215 WM8988_ROUT2V, 7, 1, 0),
216 SOC_DOUBLE_R_TLV("Output 2 Playback Volume", WM8988_LOUT2V, WM8988_ROUT2V,
217 0, 127, 0, out_tlv),
218
219 };
220
221 /*
222 * DAPM Controls
223 */
224
225 static int wm8988_lrc_control(struct snd_soc_dapm_widget *w,
226 struct snd_kcontrol *kcontrol, int event)
227 {
228 struct snd_soc_codec *codec = w->codec;
229 u16 adctl2 = wm8988_read_reg_cache(codec, WM8988_ADCTL2);
230
231 /* Use the DAC to gate LRC if active, otherwise use ADC */
232 if (wm8988_read_reg_cache(codec, WM8988_PWR2) & 0x180)
233 adctl2 &= ~0x4;
234 else
235 adctl2 |= 0x4;
236
237 return wm8988_write(codec, WM8988_ADCTL2, adctl2);
238 }
239
240 static const char *wm8988_line_texts[] = {
241 "Line 1", "Line 2", "PGA", "Differential"};
242
243 static const unsigned int wm8988_line_values[] = {
244 0, 1, 3, 4};
245
246 static const struct soc_enum wm8988_lline_enum =
247 SOC_VALUE_ENUM_SINGLE(WM8988_LOUTM1, 0, 7,
248 ARRAY_SIZE(wm8988_line_texts),
249 wm8988_line_texts,
250 wm8988_line_values);
251 static const struct snd_kcontrol_new wm8988_left_line_controls =
252 SOC_DAPM_VALUE_ENUM("Route", wm8988_lline_enum);
253
254 static const struct soc_enum wm8988_rline_enum =
255 SOC_VALUE_ENUM_SINGLE(WM8988_ROUTM1, 0, 7,
256 ARRAY_SIZE(wm8988_line_texts),
257 wm8988_line_texts,
258 wm8988_line_values);
259 static const struct snd_kcontrol_new wm8988_right_line_controls =
260 SOC_DAPM_VALUE_ENUM("Route", wm8988_lline_enum);
261
262 /* Left Mixer */
263 static const struct snd_kcontrol_new wm8988_left_mixer_controls[] = {
264 SOC_DAPM_SINGLE("Playback Switch", WM8988_LOUTM1, 8, 1, 0),
265 SOC_DAPM_SINGLE("Left Bypass Switch", WM8988_LOUTM1, 7, 1, 0),
266 SOC_DAPM_SINGLE("Right Playback Switch", WM8988_LOUTM2, 8, 1, 0),
267 SOC_DAPM_SINGLE("Right Bypass Switch", WM8988_LOUTM2, 7, 1, 0),
268 };
269
270 /* Right Mixer */
271 static const struct snd_kcontrol_new wm8988_right_mixer_controls[] = {
272 SOC_DAPM_SINGLE("Left Playback Switch", WM8988_ROUTM1, 8, 1, 0),
273 SOC_DAPM_SINGLE("Left Bypass Switch", WM8988_ROUTM1, 7, 1, 0),
274 SOC_DAPM_SINGLE("Playback Switch", WM8988_ROUTM2, 8, 1, 0),
275 SOC_DAPM_SINGLE("Right Bypass Switch", WM8988_ROUTM2, 7, 1, 0),
276 };
277
278 static const char *wm8988_pga_sel[] = {"Line 1", "Line 2", "Differential"};
279 static const unsigned int wm8988_pga_val[] = { 0, 1, 3 };
280
281 /* Left PGA Mux */
282 static const struct soc_enum wm8988_lpga_enum =
283 SOC_VALUE_ENUM_SINGLE(WM8988_LADCIN, 6, 3,
284 ARRAY_SIZE(wm8988_pga_sel),
285 wm8988_pga_sel,
286 wm8988_pga_val);
287 static const struct snd_kcontrol_new wm8988_left_pga_controls =
288 SOC_DAPM_VALUE_ENUM("Route", wm8988_lpga_enum);
289
290 /* Right PGA Mux */
291 static const struct soc_enum wm8988_rpga_enum =
292 SOC_VALUE_ENUM_SINGLE(WM8988_RADCIN, 6, 3,
293 ARRAY_SIZE(wm8988_pga_sel),
294 wm8988_pga_sel,
295 wm8988_pga_val);
296 static const struct snd_kcontrol_new wm8988_right_pga_controls =
297 SOC_DAPM_VALUE_ENUM("Route", wm8988_rpga_enum);
298
299 /* Differential Mux */
300 static const char *wm8988_diff_sel[] = {"Line 1", "Line 2"};
301 static const struct soc_enum diffmux =
302 SOC_ENUM_SINGLE(WM8988_ADCIN, 8, 2, wm8988_diff_sel);
303 static const struct snd_kcontrol_new wm8988_diffmux_controls =
304 SOC_DAPM_ENUM("Route", diffmux);
305
306 /* Mono ADC Mux */
307 static const char *wm8988_mono_mux[] = {"Stereo", "Mono (Left)",
308 "Mono (Right)", "Digital Mono"};
309 static const struct soc_enum monomux =
310 SOC_ENUM_SINGLE(WM8988_ADCIN, 6, 4, wm8988_mono_mux);
311 static const struct snd_kcontrol_new wm8988_monomux_controls =
312 SOC_DAPM_ENUM("Route", monomux);
313
314 static const struct snd_soc_dapm_widget wm8988_dapm_widgets[] = {
315 SND_SOC_DAPM_MICBIAS("Mic Bias", WM8988_PWR1, 1, 0),
316
317 SND_SOC_DAPM_MUX("Differential Mux", SND_SOC_NOPM, 0, 0,
318 &wm8988_diffmux_controls),
319 SND_SOC_DAPM_MUX("Left ADC Mux", SND_SOC_NOPM, 0, 0,
320 &wm8988_monomux_controls),
321 SND_SOC_DAPM_MUX("Right ADC Mux", SND_SOC_NOPM, 0, 0,
322 &wm8988_monomux_controls),
323
324 SND_SOC_DAPM_MUX("Left PGA Mux", WM8988_PWR1, 5, 0,
325 &wm8988_left_pga_controls),
326 SND_SOC_DAPM_MUX("Right PGA Mux", WM8988_PWR1, 4, 0,
327 &wm8988_right_pga_controls),
328
329 SND_SOC_DAPM_MUX("Left Line Mux", SND_SOC_NOPM, 0, 0,
330 &wm8988_left_line_controls),
331 SND_SOC_DAPM_MUX("Right Line Mux", SND_SOC_NOPM, 0, 0,
332 &wm8988_right_line_controls),
333
334 SND_SOC_DAPM_ADC("Right ADC", "Right Capture", WM8988_PWR1, 2, 0),
335 SND_SOC_DAPM_ADC("Left ADC", "Left Capture", WM8988_PWR1, 3, 0),
336
337 SND_SOC_DAPM_DAC("Right DAC", "Right Playback", WM8988_PWR2, 7, 0),
338 SND_SOC_DAPM_DAC("Left DAC", "Left Playback", WM8988_PWR2, 8, 0),
339
340 SND_SOC_DAPM_MIXER("Left Mixer", SND_SOC_NOPM, 0, 0,
341 &wm8988_left_mixer_controls[0],
342 ARRAY_SIZE(wm8988_left_mixer_controls)),
343 SND_SOC_DAPM_MIXER("Right Mixer", SND_SOC_NOPM, 0, 0,
344 &wm8988_right_mixer_controls[0],
345 ARRAY_SIZE(wm8988_right_mixer_controls)),
346
347 SND_SOC_DAPM_PGA("Right Out 2", WM8988_PWR2, 3, 0, NULL, 0),
348 SND_SOC_DAPM_PGA("Left Out 2", WM8988_PWR2, 4, 0, NULL, 0),
349 SND_SOC_DAPM_PGA("Right Out 1", WM8988_PWR2, 5, 0, NULL, 0),
350 SND_SOC_DAPM_PGA("Left Out 1", WM8988_PWR2, 6, 0, NULL, 0),
351
352 SND_SOC_DAPM_POST("LRC control", wm8988_lrc_control),
353
354 SND_SOC_DAPM_OUTPUT("LOUT1"),
355 SND_SOC_DAPM_OUTPUT("ROUT1"),
356 SND_SOC_DAPM_OUTPUT("LOUT2"),
357 SND_SOC_DAPM_OUTPUT("ROUT2"),
358 SND_SOC_DAPM_OUTPUT("VREF"),
359
360 SND_SOC_DAPM_INPUT("LINPUT1"),
361 SND_SOC_DAPM_INPUT("LINPUT2"),
362 SND_SOC_DAPM_INPUT("RINPUT1"),
363 SND_SOC_DAPM_INPUT("RINPUT2"),
364 };
365
366 static const struct snd_soc_dapm_route audio_map[] = {
367
368 { "Left Line Mux", "Line 1", "LINPUT1" },
369 { "Left Line Mux", "Line 2", "LINPUT2" },
370 { "Left Line Mux", "PGA", "Left PGA Mux" },
371 { "Left Line Mux", "Differential", "Differential Mux" },
372
373 { "Right Line Mux", "Line 1", "RINPUT1" },
374 { "Right Line Mux", "Line 2", "RINPUT2" },
375 { "Right Line Mux", "PGA", "Right PGA Mux" },
376 { "Right Line Mux", "Differential", "Differential Mux" },
377
378 { "Left PGA Mux", "Line 1", "LINPUT1" },
379 { "Left PGA Mux", "Line 2", "LINPUT2" },
380 { "Left PGA Mux", "Differential", "Differential Mux" },
381
382 { "Right PGA Mux", "Line 1", "RINPUT1" },
383 { "Right PGA Mux", "Line 2", "RINPUT2" },
384 { "Right PGA Mux", "Differential", "Differential Mux" },
385
386 { "Differential Mux", "Line 1", "LINPUT1" },
387 { "Differential Mux", "Line 1", "RINPUT1" },
388 { "Differential Mux", "Line 2", "LINPUT2" },
389 { "Differential Mux", "Line 2", "RINPUT2" },
390
391 { "Left ADC Mux", "Stereo", "Left PGA Mux" },
392 { "Left ADC Mux", "Mono (Left)", "Left PGA Mux" },
393 { "Left ADC Mux", "Digital Mono", "Left PGA Mux" },
394
395 { "Right ADC Mux", "Stereo", "Right PGA Mux" },
396 { "Right ADC Mux", "Mono (Right)", "Right PGA Mux" },
397 { "Right ADC Mux", "Digital Mono", "Right PGA Mux" },
398
399 { "Left ADC", NULL, "Left ADC Mux" },
400 { "Right ADC", NULL, "Right ADC Mux" },
401
402 { "Left Line Mux", "Line 1", "LINPUT1" },
403 { "Left Line Mux", "Line 2", "LINPUT2" },
404 { "Left Line Mux", "PGA", "Left PGA Mux" },
405 { "Left Line Mux", "Differential", "Differential Mux" },
406
407 { "Right Line Mux", "Line 1", "RINPUT1" },
408 { "Right Line Mux", "Line 2", "RINPUT2" },
409 { "Right Line Mux", "PGA", "Right PGA Mux" },
410 { "Right Line Mux", "Differential", "Differential Mux" },
411
412 { "Left Mixer", "Playback Switch", "Left DAC" },
413 { "Left Mixer", "Left Bypass Switch", "Left Line Mux" },
414 { "Left Mixer", "Right Playback Switch", "Right DAC" },
415 { "Left Mixer", "Right Bypass Switch", "Right Line Mux" },
416
417 { "Right Mixer", "Left Playback Switch", "Left DAC" },
418 { "Right Mixer", "Left Bypass Switch", "Left Line Mux" },
419 { "Right Mixer", "Playback Switch", "Right DAC" },
420 { "Right Mixer", "Right Bypass Switch", "Right Line Mux" },
421
422 { "Left Out 1", NULL, "Left Mixer" },
423 { "LOUT1", NULL, "Left Out 1" },
424 { "Right Out 1", NULL, "Right Mixer" },
425 { "ROUT1", NULL, "Right Out 1" },
426
427 { "Left Out 2", NULL, "Left Mixer" },
428 { "LOUT2", NULL, "Left Out 2" },
429 { "Right Out 2", NULL, "Right Mixer" },
430 { "ROUT2", NULL, "Right Out 2" },
431 };
432
433 struct _coeff_div {
434 u32 mclk;
435 u32 rate;
436 u16 fs;
437 u8 sr:5;
438 u8 usb:1;
439 };
440
441 /* codec hifi mclk clock divider coefficients */
442 static const struct _coeff_div coeff_div[] = {
443 /* 8k */
444 {12288000, 8000, 1536, 0x6, 0x0},
445 {11289600, 8000, 1408, 0x16, 0x0},
446 {18432000, 8000, 2304, 0x7, 0x0},
447 {16934400, 8000, 2112, 0x17, 0x0},
448 {12000000, 8000, 1500, 0x6, 0x1},
449
450 /* 11.025k */
451 {11289600, 11025, 1024, 0x18, 0x0},
452 {16934400, 11025, 1536, 0x19, 0x0},
453 {12000000, 11025, 1088, 0x19, 0x1},
454
455 /* 16k */
456 {12288000, 16000, 768, 0xa, 0x0},
457 {18432000, 16000, 1152, 0xb, 0x0},
458 {12000000, 16000, 750, 0xa, 0x1},
459
460 /* 22.05k */
461 {11289600, 22050, 512, 0x1a, 0x0},
462 {16934400, 22050, 768, 0x1b, 0x0},
463 {12000000, 22050, 544, 0x1b, 0x1},
464
465 /* 32k */
466 {12288000, 32000, 384, 0xc, 0x0},
467 {18432000, 32000, 576, 0xd, 0x0},
468 {12000000, 32000, 375, 0xa, 0x1},
469
470 /* 44.1k */
471 {11289600, 44100, 256, 0x10, 0x0},
472 {16934400, 44100, 384, 0x11, 0x0},
473 {12000000, 44100, 272, 0x11, 0x1},
474
475 /* 48k */
476 {12288000, 48000, 256, 0x0, 0x0},
477 {18432000, 48000, 384, 0x1, 0x0},
478 {12000000, 48000, 250, 0x0, 0x1},
479
480 /* 88.2k */
481 {11289600, 88200, 128, 0x1e, 0x0},
482 {16934400, 88200, 192, 0x1f, 0x0},
483 {12000000, 88200, 136, 0x1f, 0x1},
484
485 /* 96k */
486 {12288000, 96000, 128, 0xe, 0x0},
487 {18432000, 96000, 192, 0xf, 0x0},
488 {12000000, 96000, 125, 0xe, 0x1},
489 };
490
491 static inline int get_coeff(int mclk, int rate)
492 {
493 int i;
494
495 for (i = 0; i < ARRAY_SIZE(coeff_div); i++) {
496 if (coeff_div[i].rate == rate && coeff_div[i].mclk == mclk)
497 return i;
498 }
499
500 return -EINVAL;
501 }
502
503 /* The set of rates we can generate from the above for each SYSCLK */
504
505 static unsigned int rates_12288[] = {
506 8000, 12000, 16000, 24000, 24000, 32000, 48000, 96000,
507 };
508
509 static struct snd_pcm_hw_constraint_list constraints_12288 = {
510 .count = ARRAY_SIZE(rates_12288),
511 .list = rates_12288,
512 };
513
514 static unsigned int rates_112896[] = {
515 8000, 11025, 22050, 44100,
516 };
517
518 static struct snd_pcm_hw_constraint_list constraints_112896 = {
519 .count = ARRAY_SIZE(rates_112896),
520 .list = rates_112896,
521 };
522
523 static unsigned int rates_12[] = {
524 8000, 11025, 12000, 16000, 22050, 2400, 32000, 41100, 48000,
525 48000, 88235, 96000,
526 };
527
528 static struct snd_pcm_hw_constraint_list constraints_12 = {
529 .count = ARRAY_SIZE(rates_12),
530 .list = rates_12,
531 };
532
533 /*
534 * Note that this should be called from init rather than from hw_params.
535 */
536 static int wm8988_set_dai_sysclk(struct snd_soc_dai *codec_dai,
537 int clk_id, unsigned int freq, int dir)
538 {
539 struct snd_soc_codec *codec = codec_dai->codec;
540 struct wm8988_priv *wm8988 = codec->private_data;
541
542 switch (freq) {
543 case 11289600:
544 case 18432000:
545 case 22579200:
546 case 36864000:
547 wm8988->sysclk_constraints = &constraints_112896;
548 wm8988->sysclk = freq;
549 return 0;
550
551 case 12288000:
552 case 16934400:
553 case 24576000:
554 case 33868800:
555 wm8988->sysclk_constraints = &constraints_12288;
556 wm8988->sysclk = freq;
557 return 0;
558
559 case 12000000:
560 case 24000000:
561 wm8988->sysclk_constraints = &constraints_12;
562 wm8988->sysclk = freq;
563 return 0;
564 }
565 return -EINVAL;
566 }
567
568 static int wm8988_set_dai_fmt(struct snd_soc_dai *codec_dai,
569 unsigned int fmt)
570 {
571 struct snd_soc_codec *codec = codec_dai->codec;
572 u16 iface = 0;
573
574 /* set master/slave audio interface */
575 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
576 case SND_SOC_DAIFMT_CBM_CFM:
577 iface = 0x0040;
578 break;
579 case SND_SOC_DAIFMT_CBS_CFS:
580 break;
581 default:
582 return -EINVAL;
583 }
584
585 /* interface format */
586 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
587 case SND_SOC_DAIFMT_I2S:
588 iface |= 0x0002;
589 break;
590 case SND_SOC_DAIFMT_RIGHT_J:
591 break;
592 case SND_SOC_DAIFMT_LEFT_J:
593 iface |= 0x0001;
594 break;
595 case SND_SOC_DAIFMT_DSP_A:
596 iface |= 0x0003;
597 break;
598 case SND_SOC_DAIFMT_DSP_B:
599 iface |= 0x0013;
600 break;
601 default:
602 return -EINVAL;
603 }
604
605 /* clock inversion */
606 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
607 case SND_SOC_DAIFMT_NB_NF:
608 break;
609 case SND_SOC_DAIFMT_IB_IF:
610 iface |= 0x0090;
611 break;
612 case SND_SOC_DAIFMT_IB_NF:
613 iface |= 0x0080;
614 break;
615 case SND_SOC_DAIFMT_NB_IF:
616 iface |= 0x0010;
617 break;
618 default:
619 return -EINVAL;
620 }
621
622 wm8988_write(codec, WM8988_IFACE, iface);
623 return 0;
624 }
625
626 static int wm8988_pcm_startup(struct snd_pcm_substream *substream,
627 struct snd_soc_dai *dai)
628 {
629 struct snd_soc_codec *codec = dai->codec;
630 struct wm8988_priv *wm8988 = codec->private_data;
631
632 /* The set of sample rates that can be supported depends on the
633 * MCLK supplied to the CODEC - enforce this.
634 */
635 if (!wm8988->sysclk) {
636 dev_err(codec->dev,
637 "No MCLK configured, call set_sysclk() on init\n");
638 return -EINVAL;
639 }
640
641 snd_pcm_hw_constraint_list(substream->runtime, 0,
642 SNDRV_PCM_HW_PARAM_RATE,
643 wm8988->sysclk_constraints);
644
645 return 0;
646 }
647
648 static int wm8988_pcm_hw_params(struct snd_pcm_substream *substream,
649 struct snd_pcm_hw_params *params,
650 struct snd_soc_dai *dai)
651 {
652 struct snd_soc_pcm_runtime *rtd = substream->private_data;
653 struct snd_soc_device *socdev = rtd->socdev;
654 struct snd_soc_codec *codec = socdev->card->codec;
655 struct wm8988_priv *wm8988 = codec->private_data;
656 u16 iface = wm8988_read_reg_cache(codec, WM8988_IFACE) & 0x1f3;
657 u16 srate = wm8988_read_reg_cache(codec, WM8988_SRATE) & 0x180;
658 int coeff;
659
660 coeff = get_coeff(wm8988->sysclk, params_rate(params));
661 if (coeff < 0) {
662 coeff = get_coeff(wm8988->sysclk / 2, params_rate(params));
663 srate |= 0x40;
664 }
665 if (coeff < 0) {
666 dev_err(codec->dev,
667 "Unable to configure sample rate %dHz with %dHz MCLK\n",
668 params_rate(params), wm8988->sysclk);
669 return coeff;
670 }
671
672 /* bit size */
673 switch (params_format(params)) {
674 case SNDRV_PCM_FORMAT_S16_LE:
675 break;
676 case SNDRV_PCM_FORMAT_S20_3LE:
677 iface |= 0x0004;
678 break;
679 case SNDRV_PCM_FORMAT_S24_LE:
680 iface |= 0x0008;
681 break;
682 case SNDRV_PCM_FORMAT_S32_LE:
683 iface |= 0x000c;
684 break;
685 }
686
687 /* set iface & srate */
688 wm8988_write(codec, WM8988_IFACE, iface);
689 if (coeff >= 0)
690 wm8988_write(codec, WM8988_SRATE, srate |
691 (coeff_div[coeff].sr << 1) | coeff_div[coeff].usb);
692
693 return 0;
694 }
695
696 static int wm8988_mute(struct snd_soc_dai *dai, int mute)
697 {
698 struct snd_soc_codec *codec = dai->codec;
699 u16 mute_reg = wm8988_read_reg_cache(codec, WM8988_ADCDAC) & 0xfff7;
700
701 if (mute)
702 wm8988_write(codec, WM8988_ADCDAC, mute_reg | 0x8);
703 else
704 wm8988_write(codec, WM8988_ADCDAC, mute_reg);
705 return 0;
706 }
707
708 static int wm8988_set_bias_level(struct snd_soc_codec *codec,
709 enum snd_soc_bias_level level)
710 {
711 u16 pwr_reg = wm8988_read_reg_cache(codec, WM8988_PWR1) & ~0x1c1;
712
713 switch (level) {
714 case SND_SOC_BIAS_ON:
715 break;
716
717 case SND_SOC_BIAS_PREPARE:
718 /* VREF, VMID=2x50k, digital enabled */
719 wm8988_write(codec, WM8988_PWR1, pwr_reg | 0x00c0);
720 break;
721
722 case SND_SOC_BIAS_STANDBY:
723 if (codec->bias_level == SND_SOC_BIAS_OFF) {
724 /* VREF, VMID=2x5k */
725 wm8988_write(codec, WM8988_PWR1, pwr_reg | 0x1c1);
726
727 /* Charge caps */
728 msleep(100);
729 }
730
731 /* VREF, VMID=2*500k, digital stopped */
732 wm8988_write(codec, WM8988_PWR1, pwr_reg | 0x0141);
733 break;
734
735 case SND_SOC_BIAS_OFF:
736 wm8988_write(codec, WM8988_PWR1, 0x0000);
737 break;
738 }
739 codec->bias_level = level;
740 return 0;
741 }
742
743 #define WM8988_RATES SNDRV_PCM_RATE_8000_96000
744
745 #define WM8988_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
746 SNDRV_PCM_FMTBIT_S24_LE)
747
748 static struct snd_soc_dai_ops wm8988_ops = {
749 .startup = wm8988_pcm_startup,
750 .hw_params = wm8988_pcm_hw_params,
751 .set_fmt = wm8988_set_dai_fmt,
752 .set_sysclk = wm8988_set_dai_sysclk,
753 .digital_mute = wm8988_mute,
754 };
755
756 struct snd_soc_dai wm8988_dai = {
757 .name = "WM8988",
758 .playback = {
759 .stream_name = "Playback",
760 .channels_min = 1,
761 .channels_max = 2,
762 .rates = WM8988_RATES,
763 .formats = WM8988_FORMATS,
764 },
765 .capture = {
766 .stream_name = "Capture",
767 .channels_min = 1,
768 .channels_max = 2,
769 .rates = WM8988_RATES,
770 .formats = WM8988_FORMATS,
771 },
772 .ops = &wm8988_ops,
773 .symmetric_rates = 1,
774 };
775 EXPORT_SYMBOL_GPL(wm8988_dai);
776
777 static int wm8988_suspend(struct platform_device *pdev, pm_message_t state)
778 {
779 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
780 struct snd_soc_codec *codec = socdev->card->codec;
781
782 wm8988_set_bias_level(codec, SND_SOC_BIAS_OFF);
783 return 0;
784 }
785
786 static int wm8988_resume(struct platform_device *pdev)
787 {
788 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
789 struct snd_soc_codec *codec = socdev->card->codec;
790 int i;
791 u8 data[2];
792 u16 *cache = codec->reg_cache;
793
794 /* Sync reg_cache with the hardware */
795 for (i = 0; i < WM8988_NUM_REG; i++) {
796 if (i == WM8988_RESET)
797 continue;
798 data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001);
799 data[1] = cache[i] & 0x00ff;
800 codec->hw_write(codec->control_data, data, 2);
801 }
802
803 wm8988_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
804
805 return 0;
806 }
807
808 static struct snd_soc_codec *wm8988_codec;
809
810 static int wm8988_probe(struct platform_device *pdev)
811 {
812 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
813 struct snd_soc_codec *codec;
814 int ret = 0;
815
816 if (wm8988_codec == NULL) {
817 dev_err(&pdev->dev, "Codec device not registered\n");
818 return -ENODEV;
819 }
820
821 socdev->card->codec = wm8988_codec;
822 codec = wm8988_codec;
823
824 /* register pcms */
825 ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
826 if (ret < 0) {
827 dev_err(codec->dev, "failed to create pcms: %d\n", ret);
828 goto pcm_err;
829 }
830
831 snd_soc_add_controls(codec, wm8988_snd_controls,
832 ARRAY_SIZE(wm8988_snd_controls));
833 snd_soc_dapm_new_controls(codec, wm8988_dapm_widgets,
834 ARRAY_SIZE(wm8988_dapm_widgets));
835 snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
836 snd_soc_dapm_new_widgets(codec);
837
838 ret = snd_soc_init_card(socdev);
839 if (ret < 0) {
840 dev_err(codec->dev, "failed to register card: %d\n", ret);
841 goto card_err;
842 }
843
844 return ret;
845
846 card_err:
847 snd_soc_free_pcms(socdev);
848 snd_soc_dapm_free(socdev);
849 pcm_err:
850 return ret;
851 }
852
853 static int wm8988_remove(struct platform_device *pdev)
854 {
855 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
856
857 snd_soc_free_pcms(socdev);
858 snd_soc_dapm_free(socdev);
859
860 return 0;
861 }
862
863 struct snd_soc_codec_device soc_codec_dev_wm8988 = {
864 .probe = wm8988_probe,
865 .remove = wm8988_remove,
866 .suspend = wm8988_suspend,
867 .resume = wm8988_resume,
868 };
869 EXPORT_SYMBOL_GPL(soc_codec_dev_wm8988);
870
871 static int wm8988_register(struct wm8988_priv *wm8988)
872 {
873 struct snd_soc_codec *codec = &wm8988->codec;
874 int ret;
875 u16 reg;
876
877 if (wm8988_codec) {
878 dev_err(codec->dev, "Another WM8988 is registered\n");
879 ret = -EINVAL;
880 goto err;
881 }
882
883 mutex_init(&codec->mutex);
884 INIT_LIST_HEAD(&codec->dapm_widgets);
885 INIT_LIST_HEAD(&codec->dapm_paths);
886
887 codec->private_data = wm8988;
888 codec->name = "WM8988";
889 codec->owner = THIS_MODULE;
890 codec->read = wm8988_read_reg_cache;
891 codec->write = wm8988_write;
892 codec->dai = &wm8988_dai;
893 codec->num_dai = 1;
894 codec->reg_cache_size = ARRAY_SIZE(wm8988->reg_cache);
895 codec->reg_cache = &wm8988->reg_cache;
896 codec->bias_level = SND_SOC_BIAS_OFF;
897 codec->set_bias_level = wm8988_set_bias_level;
898
899 memcpy(codec->reg_cache, wm8988_reg,
900 sizeof(wm8988_reg));
901
902 ret = wm8988_reset(codec);
903 if (ret < 0) {
904 dev_err(codec->dev, "Failed to issue reset\n");
905 return ret;
906 }
907
908 /* set the update bits (we always update left then right) */
909 reg = wm8988_read_reg_cache(codec, WM8988_RADC);
910 wm8988_write(codec, WM8988_RADC, reg | 0x100);
911 reg = wm8988_read_reg_cache(codec, WM8988_RDAC);
912 wm8988_write(codec, WM8988_RDAC, reg | 0x0100);
913 reg = wm8988_read_reg_cache(codec, WM8988_ROUT1V);
914 wm8988_write(codec, WM8988_ROUT1V, reg | 0x0100);
915 reg = wm8988_read_reg_cache(codec, WM8988_ROUT2V);
916 wm8988_write(codec, WM8988_ROUT2V, reg | 0x0100);
917 reg = wm8988_read_reg_cache(codec, WM8988_RINVOL);
918 wm8988_write(codec, WM8988_RINVOL, reg | 0x0100);
919
920 wm8988_set_bias_level(&wm8988->codec, SND_SOC_BIAS_STANDBY);
921
922 wm8988_dai.dev = codec->dev;
923
924 wm8988_codec = codec;
925
926 ret = snd_soc_register_codec(codec);
927 if (ret != 0) {
928 dev_err(codec->dev, "Failed to register codec: %d\n", ret);
929 return ret;
930 }
931
932 ret = snd_soc_register_dai(&wm8988_dai);
933 if (ret != 0) {
934 dev_err(codec->dev, "Failed to register DAI: %d\n", ret);
935 snd_soc_unregister_codec(codec);
936 return ret;
937 }
938
939 return 0;
940
941 err:
942 kfree(wm8988);
943 return ret;
944 }
945
946 static void wm8988_unregister(struct wm8988_priv *wm8988)
947 {
948 wm8988_set_bias_level(&wm8988->codec, SND_SOC_BIAS_OFF);
949 snd_soc_unregister_dai(&wm8988_dai);
950 snd_soc_unregister_codec(&wm8988->codec);
951 kfree(wm8988);
952 wm8988_codec = NULL;
953 }
954
955 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
956 static int wm8988_i2c_probe(struct i2c_client *i2c,
957 const struct i2c_device_id *id)
958 {
959 struct wm8988_priv *wm8988;
960 struct snd_soc_codec *codec;
961
962 wm8988 = kzalloc(sizeof(struct wm8988_priv), GFP_KERNEL);
963 if (wm8988 == NULL)
964 return -ENOMEM;
965
966 codec = &wm8988->codec;
967 codec->hw_write = (hw_write_t)i2c_master_send;
968
969 i2c_set_clientdata(i2c, wm8988);
970 codec->control_data = i2c;
971
972 codec->dev = &i2c->dev;
973
974 return wm8988_register(wm8988);
975 }
976
977 static int wm8988_i2c_remove(struct i2c_client *client)
978 {
979 struct wm8988_priv *wm8988 = i2c_get_clientdata(client);
980 wm8988_unregister(wm8988);
981 return 0;
982 }
983
984 static const struct i2c_device_id wm8988_i2c_id[] = {
985 { "wm8988", 0 },
986 { }
987 };
988 MODULE_DEVICE_TABLE(i2c, wm8988_i2c_id);
989
990 static struct i2c_driver wm8988_i2c_driver = {
991 .driver = {
992 .name = "WM8988",
993 .owner = THIS_MODULE,
994 },
995 .probe = wm8988_i2c_probe,
996 .remove = wm8988_i2c_remove,
997 .id_table = wm8988_i2c_id,
998 };
999 #endif
1000
1001 #if defined(CONFIG_SPI_MASTER)
1002 static int wm8988_spi_write(struct spi_device *spi, const char *data, int len)
1003 {
1004 struct spi_transfer t;
1005 struct spi_message m;
1006 u8 msg[2];
1007
1008 if (len <= 0)
1009 return 0;
1010
1011 msg[0] = data[0];
1012 msg[1] = data[1];
1013
1014 spi_message_init(&m);
1015 memset(&t, 0, (sizeof t));
1016
1017 t.tx_buf = &msg[0];
1018 t.len = len;
1019
1020 spi_message_add_tail(&t, &m);
1021 spi_sync(spi, &m);
1022
1023 return len;
1024 }
1025
1026 static int __devinit wm8988_spi_probe(struct spi_device *spi)
1027 {
1028 struct wm8988_priv *wm8988;
1029 struct snd_soc_codec *codec;
1030
1031 wm8988 = kzalloc(sizeof(struct wm8988_priv), GFP_KERNEL);
1032 if (wm8988 == NULL)
1033 return -ENOMEM;
1034
1035 codec = &wm8988->codec;
1036 codec->hw_write = (hw_write_t)wm8988_spi_write;
1037 codec->control_data = spi;
1038 codec->dev = &spi->dev;
1039
1040 dev_set_drvdata(&spi->dev, wm8988);
1041
1042 return wm8988_register(wm8988);
1043 }
1044
1045 static int __devexit wm8988_spi_remove(struct spi_device *spi)
1046 {
1047 struct wm8988_priv *wm8988 = dev_get_drvdata(&spi->dev);
1048
1049 wm8988_unregister(wm8988);
1050
1051 return 0;
1052 }
1053
1054 static struct spi_driver wm8988_spi_driver = {
1055 .driver = {
1056 .name = "wm8988",
1057 .bus = &spi_bus_type,
1058 .owner = THIS_MODULE,
1059 },
1060 .probe = wm8988_spi_probe,
1061 .remove = __devexit_p(wm8988_spi_remove),
1062 };
1063 #endif
1064
1065 static int __init wm8988_modinit(void)
1066 {
1067 int ret;
1068
1069 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
1070 ret = i2c_add_driver(&wm8988_i2c_driver);
1071 if (ret != 0)
1072 pr_err("WM8988: Unable to register I2C driver: %d\n", ret);
1073 #endif
1074 #if defined(CONFIG_SPI_MASTER)
1075 ret = spi_register_driver(&wm8988_spi_driver);
1076 if (ret != 0)
1077 pr_err("WM8988: Unable to register SPI driver: %d\n", ret);
1078 #endif
1079 return ret;
1080 }
1081 module_init(wm8988_modinit);
1082
1083 static void __exit wm8988_exit(void)
1084 {
1085 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
1086 i2c_del_driver(&wm8988_i2c_driver);
1087 #endif
1088 #if defined(CONFIG_SPI_MASTER)
1089 spi_unregister_driver(&wm8988_spi_driver);
1090 #endif
1091 }
1092 module_exit(wm8988_exit);
1093
1094
1095 MODULE_DESCRIPTION("ASoC WM8988 driver");
1096 MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
1097 MODULE_LICENSE("GPL");
Linux with added FPC-III support