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Full support for Ginger Console
[linux-ginger.git] / sound / soc / codecs / wm8988.c
blob3f530f8a972af3547a9da579e4db2f8f519e4e58
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 #define wm8988_reset(c) snd_soc_write(c, WM8988_RESET, 0)
61
62 /*
63 * WM8988 Controls
64 */
65
66 static const char *bass_boost_txt[] = {"Linear Control", "Adaptive Boost"};
67 static const struct soc_enum bass_boost =
68 SOC_ENUM_SINGLE(WM8988_BASS, 7, 2, bass_boost_txt);
69
70 static const char *bass_filter_txt[] = { "130Hz @ 48kHz", "200Hz @ 48kHz" };
71 static const struct soc_enum bass_filter =
72 SOC_ENUM_SINGLE(WM8988_BASS, 6, 2, bass_filter_txt);
73
74 static const char *treble_txt[] = {"8kHz", "4kHz"};
75 static const struct soc_enum treble =
76 SOC_ENUM_SINGLE(WM8988_TREBLE, 6, 2, treble_txt);
77
78 static const char *stereo_3d_lc_txt[] = {"200Hz", "500Hz"};
79 static const struct soc_enum stereo_3d_lc =
80 SOC_ENUM_SINGLE(WM8988_3D, 5, 2, stereo_3d_lc_txt);
81
82 static const char *stereo_3d_uc_txt[] = {"2.2kHz", "1.5kHz"};
83 static const struct soc_enum stereo_3d_uc =
84 SOC_ENUM_SINGLE(WM8988_3D, 6, 2, stereo_3d_uc_txt);
85
86 static const char *stereo_3d_func_txt[] = {"Capture", "Playback"};
87 static const struct soc_enum stereo_3d_func =
88 SOC_ENUM_SINGLE(WM8988_3D, 7, 2, stereo_3d_func_txt);
89
90 static const char *alc_func_txt[] = {"Off", "Right", "Left", "Stereo"};
91 static const struct soc_enum alc_func =
92 SOC_ENUM_SINGLE(WM8988_ALC1, 7, 4, alc_func_txt);
93
94 static const char *ng_type_txt[] = {"Constant PGA Gain",
95 "Mute ADC Output"};
96 static const struct soc_enum ng_type =
97 SOC_ENUM_SINGLE(WM8988_NGATE, 1, 2, ng_type_txt);
98
99 static const char *deemph_txt[] = {"None", "32Khz", "44.1Khz", "48Khz"};
100 static const struct soc_enum deemph =
101 SOC_ENUM_SINGLE(WM8988_ADCDAC, 1, 4, deemph_txt);
102
103 static const char *adcpol_txt[] = {"Normal", "L Invert", "R Invert",
104 "L + R Invert"};
105 static const struct soc_enum adcpol =
106 SOC_ENUM_SINGLE(WM8988_ADCDAC, 5, 4, adcpol_txt);
107
108 static const DECLARE_TLV_DB_SCALE(pga_tlv, -1725, 75, 0);
109 static const DECLARE_TLV_DB_SCALE(adc_tlv, -9750, 50, 1);
110 static const DECLARE_TLV_DB_SCALE(dac_tlv, -12750, 50, 1);
111 static const DECLARE_TLV_DB_SCALE(out_tlv, -12100, 100, 1);
112 static const DECLARE_TLV_DB_SCALE(bypass_tlv, -1500, 300, 0);
113
114 static const struct snd_kcontrol_new wm8988_snd_controls[] = {
115
116 SOC_ENUM("Bass Boost", bass_boost),
117 SOC_ENUM("Bass Filter", bass_filter),
118 SOC_SINGLE("Bass Volume", WM8988_BASS, 0, 15, 1),
119
120 SOC_SINGLE("Treble Volume", WM8988_TREBLE, 0, 15, 0),
121 SOC_ENUM("Treble Cut-off", treble),
122
123 SOC_SINGLE("3D Switch", WM8988_3D, 0, 1, 0),
124 SOC_SINGLE("3D Volume", WM8988_3D, 1, 15, 0),
125 SOC_ENUM("3D Lower Cut-off", stereo_3d_lc),
126 SOC_ENUM("3D Upper Cut-off", stereo_3d_uc),
127 SOC_ENUM("3D Mode", stereo_3d_func),
128
129 SOC_SINGLE("ALC Capture Target Volume", WM8988_ALC1, 0, 7, 0),
130 SOC_SINGLE("ALC Capture Max Volume", WM8988_ALC1, 4, 7, 0),
131 SOC_ENUM("ALC Capture Function", alc_func),
132 SOC_SINGLE("ALC Capture ZC Switch", WM8988_ALC2, 7, 1, 0),
133 SOC_SINGLE("ALC Capture Hold Time", WM8988_ALC2, 0, 15, 0),
134 SOC_SINGLE("ALC Capture Decay Time", WM8988_ALC3, 4, 15, 0),
135 SOC_SINGLE("ALC Capture Attack Time", WM8988_ALC3, 0, 15, 0),
136 SOC_SINGLE("ALC Capture NG Threshold", WM8988_NGATE, 3, 31, 0),
137 SOC_ENUM("ALC Capture NG Type", ng_type),
138 SOC_SINGLE("ALC Capture NG Switch", WM8988_NGATE, 0, 1, 0),
139
140 SOC_SINGLE("ZC Timeout Switch", WM8988_ADCTL1, 0, 1, 0),
141
142 SOC_DOUBLE_R_TLV("Capture Digital Volume", WM8988_LADC, WM8988_RADC,
143 0, 255, 0, adc_tlv),
144 SOC_DOUBLE_R_TLV("Capture Volume", WM8988_LINVOL, WM8988_RINVOL,
145 0, 63, 0, pga_tlv),
146 SOC_DOUBLE_R("Capture ZC Switch", WM8988_LINVOL, WM8988_RINVOL, 6, 1, 0),
147 SOC_DOUBLE_R("Capture Switch", WM8988_LINVOL, WM8988_RINVOL, 7, 1, 1),
148
149 SOC_ENUM("Playback De-emphasis", deemph),
150
151 SOC_ENUM("Capture Polarity", adcpol),
152 SOC_SINGLE("Playback 6dB Attenuate", WM8988_ADCDAC, 7, 1, 0),
153 SOC_SINGLE("Capture 6dB Attenuate", WM8988_ADCDAC, 8, 1, 0),
154
155 SOC_DOUBLE_R_TLV("PCM Volume", WM8988_LDAC, WM8988_RDAC, 0, 255, 0, dac_tlv),
156
157 SOC_SINGLE_TLV("Left Mixer Left Bypass Volume", WM8988_LOUTM1, 4, 7, 1,
158 bypass_tlv),
159 SOC_SINGLE_TLV("Left Mixer Right Bypass Volume", WM8988_LOUTM2, 4, 7, 1,
160 bypass_tlv),
161 SOC_SINGLE_TLV("Right Mixer Left Bypass Volume", WM8988_ROUTM1, 4, 7, 1,
162 bypass_tlv),
163 SOC_SINGLE_TLV("Right Mixer Right Bypass Volume", WM8988_ROUTM2, 4, 7, 1,
164 bypass_tlv),
165
166 SOC_DOUBLE_R("Output 1 Playback ZC Switch", WM8988_LOUT1V,
167 WM8988_ROUT1V, 7, 1, 0),
168 SOC_DOUBLE_R_TLV("Output 1 Playback Volume", WM8988_LOUT1V, WM8988_ROUT1V,
169 0, 127, 0, out_tlv),
170
171 SOC_DOUBLE_R("Output 2 Playback ZC Switch", WM8988_LOUT2V,
172 WM8988_ROUT2V, 7, 1, 0),
173 SOC_DOUBLE_R_TLV("Output 2 Playback Volume", WM8988_LOUT2V, WM8988_ROUT2V,
174 0, 127, 0, out_tlv),
175
176 };
177
178 /*
179 * DAPM Controls
180 */
181
182 static int wm8988_lrc_control(struct snd_soc_dapm_widget *w,
183 struct snd_kcontrol *kcontrol, int event)
184 {
185 struct snd_soc_codec *codec = w->codec;
186 u16 adctl2 = snd_soc_read(codec, WM8988_ADCTL2);
187
188 /* Use the DAC to gate LRC if active, otherwise use ADC */
189 if (snd_soc_read(codec, WM8988_PWR2) & 0x180)
190 adctl2 &= ~0x4;
191 else
192 adctl2 |= 0x4;
193
194 return snd_soc_write(codec, WM8988_ADCTL2, adctl2);
195 }
196
197 static const char *wm8988_line_texts[] = {
198 "Line 1", "Line 2", "PGA", "Differential"};
199
200 static const unsigned int wm8988_line_values[] = {
201 0, 1, 3, 4};
202
203 static const struct soc_enum wm8988_lline_enum =
204 SOC_VALUE_ENUM_SINGLE(WM8988_LOUTM1, 0, 7,
205 ARRAY_SIZE(wm8988_line_texts),
206 wm8988_line_texts,
207 wm8988_line_values);
208 static const struct snd_kcontrol_new wm8988_left_line_controls =
209 SOC_DAPM_VALUE_ENUM("Route", wm8988_lline_enum);
210
211 static const struct soc_enum wm8988_rline_enum =
212 SOC_VALUE_ENUM_SINGLE(WM8988_ROUTM1, 0, 7,
213 ARRAY_SIZE(wm8988_line_texts),
214 wm8988_line_texts,
215 wm8988_line_values);
216 static const struct snd_kcontrol_new wm8988_right_line_controls =
217 SOC_DAPM_VALUE_ENUM("Route", wm8988_lline_enum);
218
219 /* Left Mixer */
220 static const struct snd_kcontrol_new wm8988_left_mixer_controls[] = {
221 SOC_DAPM_SINGLE("Playback Switch", WM8988_LOUTM1, 8, 1, 0),
222 SOC_DAPM_SINGLE("Left Bypass Switch", WM8988_LOUTM1, 7, 1, 0),
223 SOC_DAPM_SINGLE("Right Playback Switch", WM8988_LOUTM2, 8, 1, 0),
224 SOC_DAPM_SINGLE("Right Bypass Switch", WM8988_LOUTM2, 7, 1, 0),
225 };
226
227 /* Right Mixer */
228 static const struct snd_kcontrol_new wm8988_right_mixer_controls[] = {
229 SOC_DAPM_SINGLE("Left Playback Switch", WM8988_ROUTM1, 8, 1, 0),
230 SOC_DAPM_SINGLE("Left Bypass Switch", WM8988_ROUTM1, 7, 1, 0),
231 SOC_DAPM_SINGLE("Playback Switch", WM8988_ROUTM2, 8, 1, 0),
232 SOC_DAPM_SINGLE("Right Bypass Switch", WM8988_ROUTM2, 7, 1, 0),
233 };
234
235 static const char *wm8988_pga_sel[] = {"Line 1", "Line 2", "Differential"};
236 static const unsigned int wm8988_pga_val[] = { 0, 1, 3 };
237
238 /* Left PGA Mux */
239 static const struct soc_enum wm8988_lpga_enum =
240 SOC_VALUE_ENUM_SINGLE(WM8988_LADCIN, 6, 3,
241 ARRAY_SIZE(wm8988_pga_sel),
242 wm8988_pga_sel,
243 wm8988_pga_val);
244 static const struct snd_kcontrol_new wm8988_left_pga_controls =
245 SOC_DAPM_VALUE_ENUM("Route", wm8988_lpga_enum);
246
247 /* Right PGA Mux */
248 static const struct soc_enum wm8988_rpga_enum =
249 SOC_VALUE_ENUM_SINGLE(WM8988_RADCIN, 6, 3,
250 ARRAY_SIZE(wm8988_pga_sel),
251 wm8988_pga_sel,
252 wm8988_pga_val);
253 static const struct snd_kcontrol_new wm8988_right_pga_controls =
254 SOC_DAPM_VALUE_ENUM("Route", wm8988_rpga_enum);
255
256 /* Differential Mux */
257 static const char *wm8988_diff_sel[] = {"Line 1", "Line 2"};
258 static const struct soc_enum diffmux =
259 SOC_ENUM_SINGLE(WM8988_ADCIN, 8, 2, wm8988_diff_sel);
260 static const struct snd_kcontrol_new wm8988_diffmux_controls =
261 SOC_DAPM_ENUM("Route", diffmux);
262
263 /* Mono ADC Mux */
264 static const char *wm8988_mono_mux[] = {"Stereo", "Mono (Left)",
265 "Mono (Right)", "Digital Mono"};
266 static const struct soc_enum monomux =
267 SOC_ENUM_SINGLE(WM8988_ADCIN, 6, 4, wm8988_mono_mux);
268 static const struct snd_kcontrol_new wm8988_monomux_controls =
269 SOC_DAPM_ENUM("Route", monomux);
270
271 static const struct snd_soc_dapm_widget wm8988_dapm_widgets[] = {
272 SND_SOC_DAPM_MICBIAS("Mic Bias", WM8988_PWR1, 1, 0),
273
274 SND_SOC_DAPM_MUX("Differential Mux", SND_SOC_NOPM, 0, 0,
275 &wm8988_diffmux_controls),
276 SND_SOC_DAPM_MUX("Left ADC Mux", SND_SOC_NOPM, 0, 0,
277 &wm8988_monomux_controls),
278 SND_SOC_DAPM_MUX("Right ADC Mux", SND_SOC_NOPM, 0, 0,
279 &wm8988_monomux_controls),
280
281 SND_SOC_DAPM_MUX("Left PGA Mux", WM8988_PWR1, 5, 0,
282 &wm8988_left_pga_controls),
283 SND_SOC_DAPM_MUX("Right PGA Mux", WM8988_PWR1, 4, 0,
284 &wm8988_right_pga_controls),
285
286 SND_SOC_DAPM_MUX("Left Line Mux", SND_SOC_NOPM, 0, 0,
287 &wm8988_left_line_controls),
288 SND_SOC_DAPM_MUX("Right Line Mux", SND_SOC_NOPM, 0, 0,
289 &wm8988_right_line_controls),
290
291 SND_SOC_DAPM_ADC("Right ADC", "Right Capture", WM8988_PWR1, 2, 0),
292 SND_SOC_DAPM_ADC("Left ADC", "Left Capture", WM8988_PWR1, 3, 0),
293
294 SND_SOC_DAPM_DAC("Right DAC", "Right Playback", WM8988_PWR2, 7, 0),
295 SND_SOC_DAPM_DAC("Left DAC", "Left Playback", WM8988_PWR2, 8, 0),
296
297 SND_SOC_DAPM_MIXER("Left Mixer", SND_SOC_NOPM, 0, 0,
298 &wm8988_left_mixer_controls[0],
299 ARRAY_SIZE(wm8988_left_mixer_controls)),
300 SND_SOC_DAPM_MIXER("Right Mixer", SND_SOC_NOPM, 0, 0,
301 &wm8988_right_mixer_controls[0],
302 ARRAY_SIZE(wm8988_right_mixer_controls)),
303
304 SND_SOC_DAPM_PGA("Right Out 2", WM8988_PWR2, 3, 0, NULL, 0),
305 SND_SOC_DAPM_PGA("Left Out 2", WM8988_PWR2, 4, 0, NULL, 0),
306 SND_SOC_DAPM_PGA("Right Out 1", WM8988_PWR2, 5, 0, NULL, 0),
307 SND_SOC_DAPM_PGA("Left Out 1", WM8988_PWR2, 6, 0, NULL, 0),
308
309 SND_SOC_DAPM_POST("LRC control", wm8988_lrc_control),
310
311 SND_SOC_DAPM_OUTPUT("LOUT1"),
312 SND_SOC_DAPM_OUTPUT("ROUT1"),
313 SND_SOC_DAPM_OUTPUT("LOUT2"),
314 SND_SOC_DAPM_OUTPUT("ROUT2"),
315 SND_SOC_DAPM_OUTPUT("VREF"),
316
317 SND_SOC_DAPM_INPUT("LINPUT1"),
318 SND_SOC_DAPM_INPUT("LINPUT2"),
319 SND_SOC_DAPM_INPUT("RINPUT1"),
320 SND_SOC_DAPM_INPUT("RINPUT2"),
321 };
322
323 static const struct snd_soc_dapm_route audio_map[] = {
324
325 { "Left Line Mux", "Line 1", "LINPUT1" },
326 { "Left Line Mux", "Line 2", "LINPUT2" },
327 { "Left Line Mux", "PGA", "Left PGA Mux" },
328 { "Left Line Mux", "Differential", "Differential Mux" },
329
330 { "Right Line Mux", "Line 1", "RINPUT1" },
331 { "Right Line Mux", "Line 2", "RINPUT2" },
332 { "Right Line Mux", "PGA", "Right PGA Mux" },
333 { "Right Line Mux", "Differential", "Differential Mux" },
334
335 { "Left PGA Mux", "Line 1", "LINPUT1" },
336 { "Left PGA Mux", "Line 2", "LINPUT2" },
337 { "Left PGA Mux", "Differential", "Differential Mux" },
338
339 { "Right PGA Mux", "Line 1", "RINPUT1" },
340 { "Right PGA Mux", "Line 2", "RINPUT2" },
341 { "Right PGA Mux", "Differential", "Differential Mux" },
342
343 { "Differential Mux", "Line 1", "LINPUT1" },
344 { "Differential Mux", "Line 1", "RINPUT1" },
345 { "Differential Mux", "Line 2", "LINPUT2" },
346 { "Differential Mux", "Line 2", "RINPUT2" },
347
348 { "Left ADC Mux", "Stereo", "Left PGA Mux" },
349 { "Left ADC Mux", "Mono (Left)", "Left PGA Mux" },
350 { "Left ADC Mux", "Digital Mono", "Left PGA Mux" },
351
352 { "Right ADC Mux", "Stereo", "Right PGA Mux" },
353 { "Right ADC Mux", "Mono (Right)", "Right PGA Mux" },
354 { "Right ADC Mux", "Digital Mono", "Right PGA Mux" },
355
356 { "Left ADC", NULL, "Left ADC Mux" },
357 { "Right ADC", NULL, "Right ADC Mux" },
358
359 { "Left Line Mux", "Line 1", "LINPUT1" },
360 { "Left Line Mux", "Line 2", "LINPUT2" },
361 { "Left Line Mux", "PGA", "Left PGA Mux" },
362 { "Left Line Mux", "Differential", "Differential Mux" },
363
364 { "Right Line Mux", "Line 1", "RINPUT1" },
365 { "Right Line Mux", "Line 2", "RINPUT2" },
366 { "Right Line Mux", "PGA", "Right PGA Mux" },
367 { "Right Line Mux", "Differential", "Differential Mux" },
368
369 { "Left Mixer", "Playback Switch", "Left DAC" },
370 { "Left Mixer", "Left Bypass Switch", "Left Line Mux" },
371 { "Left Mixer", "Right Playback Switch", "Right DAC" },
372 { "Left Mixer", "Right Bypass Switch", "Right Line Mux" },
373
374 { "Right Mixer", "Left Playback Switch", "Left DAC" },
375 { "Right Mixer", "Left Bypass Switch", "Left Line Mux" },
376 { "Right Mixer", "Playback Switch", "Right DAC" },
377 { "Right Mixer", "Right Bypass Switch", "Right Line Mux" },
378
379 { "Left Out 1", NULL, "Left Mixer" },
380 { "LOUT1", NULL, "Left Out 1" },
381 { "Right Out 1", NULL, "Right Mixer" },
382 { "ROUT1", NULL, "Right Out 1" },
383
384 { "Left Out 2", NULL, "Left Mixer" },
385 { "LOUT2", NULL, "Left Out 2" },
386 { "Right Out 2", NULL, "Right Mixer" },
387 { "ROUT2", NULL, "Right Out 2" },
388 };
389
390 struct _coeff_div {
391 u32 mclk;
392 u32 rate;
393 u16 fs;
394 u8 sr:5;
395 u8 usb:1;
396 };
397
398 /* codec hifi mclk clock divider coefficients */
399 static const struct _coeff_div coeff_div[] = {
400 /* 8k */
401 {12288000, 8000, 1536, 0x6, 0x0},
402 {11289600, 8000, 1408, 0x16, 0x0},
403 {18432000, 8000, 2304, 0x7, 0x0},
404 {16934400, 8000, 2112, 0x17, 0x0},
405 {12000000, 8000, 1500, 0x6, 0x1},
406
407 /* 11.025k */
408 {11289600, 11025, 1024, 0x18, 0x0},
409 {16934400, 11025, 1536, 0x19, 0x0},
410 {12000000, 11025, 1088, 0x19, 0x1},
411
412 /* 16k */
413 {12288000, 16000, 768, 0xa, 0x0},
414 {18432000, 16000, 1152, 0xb, 0x0},
415 {12000000, 16000, 750, 0xa, 0x1},
416
417 /* 22.05k */
418 {11289600, 22050, 512, 0x1a, 0x0},
419 {16934400, 22050, 768, 0x1b, 0x0},
420 {12000000, 22050, 544, 0x1b, 0x1},
421
422 /* 32k */
423 {12288000, 32000, 384, 0xc, 0x0},
424 {18432000, 32000, 576, 0xd, 0x0},
425 {12000000, 32000, 375, 0xa, 0x1},
426
427 /* 44.1k */
428 {11289600, 44100, 256, 0x10, 0x0},
429 {16934400, 44100, 384, 0x11, 0x0},
430 {12000000, 44100, 272, 0x11, 0x1},
431
432 /* 48k */
433 {12288000, 48000, 256, 0x0, 0x0},
434 {18432000, 48000, 384, 0x1, 0x0},
435 {12000000, 48000, 250, 0x0, 0x1},
436
437 /* 88.2k */
438 {11289600, 88200, 128, 0x1e, 0x0},
439 {16934400, 88200, 192, 0x1f, 0x0},
440 {12000000, 88200, 136, 0x1f, 0x1},
441
442 /* 96k */
443 {12288000, 96000, 128, 0xe, 0x0},
444 {18432000, 96000, 192, 0xf, 0x0},
445 {12000000, 96000, 125, 0xe, 0x1},
446 };
447
448 static inline int get_coeff(int mclk, int rate)
449 {
450 int i;
451
452 for (i = 0; i < ARRAY_SIZE(coeff_div); i++) {
453 if (coeff_div[i].rate == rate && coeff_div[i].mclk == mclk)
454 return i;
455 }
456
457 return -EINVAL;
458 }
459
460 /* The set of rates we can generate from the above for each SYSCLK */
461
462 static unsigned int rates_12288[] = {
463 8000, 12000, 16000, 24000, 24000, 32000, 48000, 96000,
464 };
465
466 static struct snd_pcm_hw_constraint_list constraints_12288 = {
467 .count = ARRAY_SIZE(rates_12288),
468 .list = rates_12288,
469 };
470
471 static unsigned int rates_112896[] = {
472 8000, 11025, 22050, 44100,
473 };
474
475 static struct snd_pcm_hw_constraint_list constraints_112896 = {
476 .count = ARRAY_SIZE(rates_112896),
477 .list = rates_112896,
478 };
479
480 static unsigned int rates_12[] = {
481 8000, 11025, 12000, 16000, 22050, 2400, 32000, 41100, 48000,
482 48000, 88235, 96000,
483 };
484
485 static struct snd_pcm_hw_constraint_list constraints_12 = {
486 .count = ARRAY_SIZE(rates_12),
487 .list = rates_12,
488 };
489
490 /*
491 * Note that this should be called from init rather than from hw_params.
492 */
493 static int wm8988_set_dai_sysclk(struct snd_soc_dai *codec_dai,
494 int clk_id, unsigned int freq, int dir)
495 {
496 struct snd_soc_codec *codec = codec_dai->codec;
497 struct wm8988_priv *wm8988 = codec->private_data;
498
499 switch (freq) {
500 case 11289600:
501 case 18432000:
502 case 22579200:
503 case 36864000:
504 wm8988->sysclk_constraints = &constraints_112896;
505 wm8988->sysclk = freq;
506 return 0;
507
508 case 12288000:
509 case 16934400:
510 case 24576000:
511 case 33868800:
512 wm8988->sysclk_constraints = &constraints_12288;
513 wm8988->sysclk = freq;
514 return 0;
515
516 case 12000000:
517 case 24000000:
518 wm8988->sysclk_constraints = &constraints_12;
519 wm8988->sysclk = freq;
520 return 0;
521 }
522 return -EINVAL;
523 }
524
525 static int wm8988_set_dai_fmt(struct snd_soc_dai *codec_dai,
526 unsigned int fmt)
527 {
528 struct snd_soc_codec *codec = codec_dai->codec;
529 u16 iface = 0;
530
531 /* set master/slave audio interface */
532 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
533 case SND_SOC_DAIFMT_CBM_CFM:
534 iface = 0x0040;
535 break;
536 case SND_SOC_DAIFMT_CBS_CFS:
537 break;
538 default:
539 return -EINVAL;
540 }
541
542 /* interface format */
543 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
544 case SND_SOC_DAIFMT_I2S:
545 iface |= 0x0002;
546 break;
547 case SND_SOC_DAIFMT_RIGHT_J:
548 break;
549 case SND_SOC_DAIFMT_LEFT_J:
550 iface |= 0x0001;
551 break;
552 case SND_SOC_DAIFMT_DSP_A:
553 iface |= 0x0003;
554 break;
555 case SND_SOC_DAIFMT_DSP_B:
556 iface |= 0x0013;
557 break;
558 default:
559 return -EINVAL;
560 }
561
562 /* clock inversion */
563 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
564 case SND_SOC_DAIFMT_NB_NF:
565 break;
566 case SND_SOC_DAIFMT_IB_IF:
567 iface |= 0x0090;
568 break;
569 case SND_SOC_DAIFMT_IB_NF:
570 iface |= 0x0080;
571 break;
572 case SND_SOC_DAIFMT_NB_IF:
573 iface |= 0x0010;
574 break;
575 default:
576 return -EINVAL;
577 }
578
579 snd_soc_write(codec, WM8988_IFACE, iface);
580 return 0;
581 }
582
583 static int wm8988_pcm_startup(struct snd_pcm_substream *substream,
584 struct snd_soc_dai *dai)
585 {
586 struct snd_soc_codec *codec = dai->codec;
587 struct wm8988_priv *wm8988 = codec->private_data;
588
589 /* The set of sample rates that can be supported depends on the
590 * MCLK supplied to the CODEC - enforce this.
591 */
592 if (!wm8988->sysclk) {
593 dev_err(codec->dev,
594 "No MCLK configured, call set_sysclk() on init\n");
595 return -EINVAL;
596 }
597
598 snd_pcm_hw_constraint_list(substream->runtime, 0,
599 SNDRV_PCM_HW_PARAM_RATE,
600 wm8988->sysclk_constraints);
601
602 return 0;
603 }
604
605 static int wm8988_pcm_hw_params(struct snd_pcm_substream *substream,
606 struct snd_pcm_hw_params *params,
607 struct snd_soc_dai *dai)
608 {
609 struct snd_soc_pcm_runtime *rtd = substream->private_data;
610 struct snd_soc_device *socdev = rtd->socdev;
611 struct snd_soc_codec *codec = socdev->card->codec;
612 struct wm8988_priv *wm8988 = codec->private_data;
613 u16 iface = snd_soc_read(codec, WM8988_IFACE) & 0x1f3;
614 u16 srate = snd_soc_read(codec, WM8988_SRATE) & 0x180;
615 int coeff;
616
617 coeff = get_coeff(wm8988->sysclk, params_rate(params));
618 if (coeff < 0) {
619 coeff = get_coeff(wm8988->sysclk / 2, params_rate(params));
620 srate |= 0x40;
621 }
622 if (coeff < 0) {
623 dev_err(codec->dev,
624 "Unable to configure sample rate %dHz with %dHz MCLK\n",
625 params_rate(params), wm8988->sysclk);
626 return coeff;
627 }
628
629 /* bit size */
630 switch (params_format(params)) {
631 case SNDRV_PCM_FORMAT_S16_LE:
632 break;
633 case SNDRV_PCM_FORMAT_S20_3LE:
634 iface |= 0x0004;
635 break;
636 case SNDRV_PCM_FORMAT_S24_LE:
637 iface |= 0x0008;
638 break;
639 case SNDRV_PCM_FORMAT_S32_LE:
640 iface |= 0x000c;
641 break;
642 }
643
644 /* set iface & srate */
645 snd_soc_write(codec, WM8988_IFACE, iface);
646 if (coeff >= 0)
647 snd_soc_write(codec, WM8988_SRATE, srate |
648 (coeff_div[coeff].sr << 1) | coeff_div[coeff].usb);
649
650 return 0;
651 }
652
653 static int wm8988_mute(struct snd_soc_dai *dai, int mute)
654 {
655 struct snd_soc_codec *codec = dai->codec;
656 u16 mute_reg = snd_soc_read(codec, WM8988_ADCDAC) & 0xfff7;
657
658 if (mute)
659 snd_soc_write(codec, WM8988_ADCDAC, mute_reg | 0x8);
660 else
661 snd_soc_write(codec, WM8988_ADCDAC, mute_reg);
662 return 0;
663 }
664
665 static int wm8988_set_bias_level(struct snd_soc_codec *codec,
666 enum snd_soc_bias_level level)
667 {
668 u16 pwr_reg = snd_soc_read(codec, WM8988_PWR1) & ~0x1c1;
669
670 switch (level) {
671 case SND_SOC_BIAS_ON:
672 break;
673
674 case SND_SOC_BIAS_PREPARE:
675 /* VREF, VMID=2x50k, digital enabled */
676 snd_soc_write(codec, WM8988_PWR1, pwr_reg | 0x00c0);
677 break;
678
679 case SND_SOC_BIAS_STANDBY:
680 if (codec->bias_level == SND_SOC_BIAS_OFF) {
681 /* VREF, VMID=2x5k */
682 snd_soc_write(codec, WM8988_PWR1, pwr_reg | 0x1c1);
683
684 /* Charge caps */
685 msleep(100);
686 }
687
688 /* VREF, VMID=2*500k, digital stopped */
689 snd_soc_write(codec, WM8988_PWR1, pwr_reg | 0x0141);
690 break;
691
692 case SND_SOC_BIAS_OFF:
693 snd_soc_write(codec, WM8988_PWR1, 0x0000);
694 break;
695 }
696 codec->bias_level = level;
697 return 0;
698 }
699
700 #define WM8988_RATES SNDRV_PCM_RATE_8000_96000
701
702 #define WM8988_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
703 SNDRV_PCM_FMTBIT_S24_LE)
704
705 static struct snd_soc_dai_ops wm8988_ops = {
706 .startup = wm8988_pcm_startup,
707 .hw_params = wm8988_pcm_hw_params,
708 .set_fmt = wm8988_set_dai_fmt,
709 .set_sysclk = wm8988_set_dai_sysclk,
710 .digital_mute = wm8988_mute,
711 };
712
713 struct snd_soc_dai wm8988_dai = {
714 .name = "WM8988",
715 .playback = {
716 .stream_name = "Playback",
717 .channels_min = 1,
718 .channels_max = 2,
719 .rates = WM8988_RATES,
720 .formats = WM8988_FORMATS,
721 },
722 .capture = {
723 .stream_name = "Capture",
724 .channels_min = 1,
725 .channels_max = 2,
726 .rates = WM8988_RATES,
727 .formats = WM8988_FORMATS,
728 },
729 .ops = &wm8988_ops,
730 .symmetric_rates = 1,
731 };
732 EXPORT_SYMBOL_GPL(wm8988_dai);
733
734 static int wm8988_suspend(struct platform_device *pdev, pm_message_t state)
735 {
736 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
737 struct snd_soc_codec *codec = socdev->card->codec;
738
739 wm8988_set_bias_level(codec, SND_SOC_BIAS_OFF);
740 return 0;
741 }
742
743 static int wm8988_resume(struct platform_device *pdev)
744 {
745 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
746 struct snd_soc_codec *codec = socdev->card->codec;
747 int i;
748 u8 data[2];
749 u16 *cache = codec->reg_cache;
750
751 /* Sync reg_cache with the hardware */
752 for (i = 0; i < WM8988_NUM_REG; i++) {
753 if (i == WM8988_RESET)
754 continue;
755 data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001);
756 data[1] = cache[i] & 0x00ff;
757 codec->hw_write(codec->control_data, data, 2);
758 }
759
760 wm8988_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
761
762 return 0;
763 }
764
765 static struct snd_soc_codec *wm8988_codec;
766
767 static int wm8988_probe(struct platform_device *pdev)
768 {
769 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
770 struct snd_soc_codec *codec;
771 int ret = 0;
772
773 if (wm8988_codec == NULL) {
774 dev_err(&pdev->dev, "Codec device not registered\n");
775 return -ENODEV;
776 }
777
778 socdev->card->codec = wm8988_codec;
779 codec = wm8988_codec;
780
781 /* register pcms */
782 ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
783 if (ret < 0) {
784 dev_err(codec->dev, "failed to create pcms: %d\n", ret);
785 goto pcm_err;
786 }
787
788 snd_soc_add_controls(codec, wm8988_snd_controls,
789 ARRAY_SIZE(wm8988_snd_controls));
790 snd_soc_dapm_new_controls(codec, wm8988_dapm_widgets,
791 ARRAY_SIZE(wm8988_dapm_widgets));
792 snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
793 snd_soc_dapm_new_widgets(codec);
794
795 ret = snd_soc_init_card(socdev);
796 if (ret < 0) {
797 dev_err(codec->dev, "failed to register card: %d\n", ret);
798 goto card_err;
799 }
800
801 return ret;
802
803 card_err:
804 snd_soc_free_pcms(socdev);
805 snd_soc_dapm_free(socdev);
806 pcm_err:
807 return ret;
808 }
809
810 static int wm8988_remove(struct platform_device *pdev)
811 {
812 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
813
814 snd_soc_free_pcms(socdev);
815 snd_soc_dapm_free(socdev);
816
817 return 0;
818 }
819
820 struct snd_soc_codec_device soc_codec_dev_wm8988 = {
821 .probe = wm8988_probe,
822 .remove = wm8988_remove,
823 .suspend = wm8988_suspend,
824 .resume = wm8988_resume,
825 };
826 EXPORT_SYMBOL_GPL(soc_codec_dev_wm8988);
827
828 static int wm8988_register(struct wm8988_priv *wm8988,
829 enum snd_soc_control_type control)
830 {
831 struct snd_soc_codec *codec = &wm8988->codec;
832 int ret;
833 u16 reg;
834
835 if (wm8988_codec) {
836 dev_err(codec->dev, "Another WM8988 is registered\n");
837 ret = -EINVAL;
838 goto err;
839 }
840
841 mutex_init(&codec->mutex);
842 INIT_LIST_HEAD(&codec->dapm_widgets);
843 INIT_LIST_HEAD(&codec->dapm_paths);
844
845 codec->private_data = wm8988;
846 codec->name = "WM8988";
847 codec->owner = THIS_MODULE;
848 codec->dai = &wm8988_dai;
849 codec->num_dai = 1;
850 codec->reg_cache_size = ARRAY_SIZE(wm8988->reg_cache);
851 codec->reg_cache = &wm8988->reg_cache;
852 codec->bias_level = SND_SOC_BIAS_OFF;
853 codec->set_bias_level = wm8988_set_bias_level;
854
855 memcpy(codec->reg_cache, wm8988_reg,
856 sizeof(wm8988_reg));
857
858 ret = snd_soc_codec_set_cache_io(codec, 7, 9, control);
859 if (ret < 0) {
860 dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
861 goto err;
862 }
863
864 ret = wm8988_reset(codec);
865 if (ret < 0) {
866 dev_err(codec->dev, "Failed to issue reset\n");
867 goto err;
868 }
869
870 /* set the update bits (we always update left then right) */
871 reg = snd_soc_read(codec, WM8988_RADC);
872 snd_soc_write(codec, WM8988_RADC, reg | 0x100);
873 reg = snd_soc_read(codec, WM8988_RDAC);
874 snd_soc_write(codec, WM8988_RDAC, reg | 0x0100);
875 reg = snd_soc_read(codec, WM8988_ROUT1V);
876 snd_soc_write(codec, WM8988_ROUT1V, reg | 0x0100);
877 reg = snd_soc_read(codec, WM8988_ROUT2V);
878 snd_soc_write(codec, WM8988_ROUT2V, reg | 0x0100);
879 reg = snd_soc_read(codec, WM8988_RINVOL);
880 snd_soc_write(codec, WM8988_RINVOL, reg | 0x0100);
881
882 wm8988_set_bias_level(&wm8988->codec, SND_SOC_BIAS_STANDBY);
883
884 wm8988_dai.dev = codec->dev;
885
886 wm8988_codec = codec;
887
888 ret = snd_soc_register_codec(codec);
889 if (ret != 0) {
890 dev_err(codec->dev, "Failed to register codec: %d\n", ret);
891 goto err;
892 }
893
894 ret = snd_soc_register_dai(&wm8988_dai);
895 if (ret != 0) {
896 dev_err(codec->dev, "Failed to register DAI: %d\n", ret);
897 snd_soc_unregister_codec(codec);
898 goto err_codec;
899 }
900
901 return 0;
902
903 err_codec:
904 snd_soc_unregister_codec(codec);
905 err:
906 kfree(wm8988);
907 return ret;
908 }
909
910 static void wm8988_unregister(struct wm8988_priv *wm8988)
911 {
912 wm8988_set_bias_level(&wm8988->codec, SND_SOC_BIAS_OFF);
913 snd_soc_unregister_dai(&wm8988_dai);
914 snd_soc_unregister_codec(&wm8988->codec);
915 kfree(wm8988);
916 wm8988_codec = NULL;
917 }
918
919 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
920 static int wm8988_i2c_probe(struct i2c_client *i2c,
921 const struct i2c_device_id *id)
922 {
923 struct wm8988_priv *wm8988;
924 struct snd_soc_codec *codec;
925
926 wm8988 = kzalloc(sizeof(struct wm8988_priv), GFP_KERNEL);
927 if (wm8988 == NULL)
928 return -ENOMEM;
929
930 codec = &wm8988->codec;
931
932 i2c_set_clientdata(i2c, wm8988);
933 codec->control_data = i2c;
934
935 codec->dev = &i2c->dev;
936
937 return wm8988_register(wm8988, SND_SOC_I2C);
938 }
939
940 static int wm8988_i2c_remove(struct i2c_client *client)
941 {
942 struct wm8988_priv *wm8988 = i2c_get_clientdata(client);
943 wm8988_unregister(wm8988);
944 return 0;
945 }
946
947 #ifdef CONFIG_PM
948 static int wm8988_i2c_suspend(struct i2c_client *client, pm_message_t msg)
949 {
950 return snd_soc_suspend_device(&client->dev);
951 }
952
953 static int wm8988_i2c_resume(struct i2c_client *client)
954 {
955 return snd_soc_resume_device(&client->dev);
956 }
957 #else
958 #define wm8988_i2c_suspend NULL
959 #define wm8988_i2c_resume NULL
960 #endif
961
962 static const struct i2c_device_id wm8988_i2c_id[] = {
963 { "wm8988", 0 },
964 { }
965 };
966 MODULE_DEVICE_TABLE(i2c, wm8988_i2c_id);
967
968 static struct i2c_driver wm8988_i2c_driver = {
969 .driver = {
970 .name = "WM8988",
971 .owner = THIS_MODULE,
972 },
973 .probe = wm8988_i2c_probe,
974 .remove = wm8988_i2c_remove,
975 .suspend = wm8988_i2c_suspend,
976 .resume = wm8988_i2c_resume,
977 .id_table = wm8988_i2c_id,
978 };
979 #endif
980
981 #if defined(CONFIG_SPI_MASTER)
982 static int __devinit wm8988_spi_probe(struct spi_device *spi)
983 {
984 struct wm8988_priv *wm8988;
985 struct snd_soc_codec *codec;
986
987 wm8988 = kzalloc(sizeof(struct wm8988_priv), GFP_KERNEL);
988 if (wm8988 == NULL)
989 return -ENOMEM;
990
991 codec = &wm8988->codec;
992 codec->control_data = spi;
993 codec->dev = &spi->dev;
994
995 dev_set_drvdata(&spi->dev, wm8988);
996
997 return wm8988_register(wm8988, SND_SOC_SPI);
998 }
999
1000 static int __devexit wm8988_spi_remove(struct spi_device *spi)
1001 {
1002 struct wm8988_priv *wm8988 = dev_get_drvdata(&spi->dev);
1003
1004 wm8988_unregister(wm8988);
1005
1006 return 0;
1007 }
1008
1009 #ifdef CONFIG_PM
1010 static int wm8988_spi_suspend(struct spi_device *spi, pm_message_t msg)
1011 {
1012 return snd_soc_suspend_device(&spi->dev);
1013 }
1014
1015 static int wm8988_spi_resume(struct spi_device *spi)
1016 {
1017 return snd_soc_resume_device(&spi->dev);
1018 }
1019 #else
1020 #define wm8988_spi_suspend NULL
1021 #define wm8988_spi_resume NULL
1022 #endif
1023
1024 static struct spi_driver wm8988_spi_driver = {
1025 .driver = {
1026 .name = "wm8988",
1027 .bus = &spi_bus_type,
1028 .owner = THIS_MODULE,
1029 },
1030 .probe = wm8988_spi_probe,
1031 .remove = __devexit_p(wm8988_spi_remove),
1032 .suspend = wm8988_spi_suspend,
1033 .resume = wm8988_spi_resume,
1034 };
1035 #endif
1036
1037 static int __init wm8988_modinit(void)
1038 {
1039 int ret;
1040
1041 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
1042 ret = i2c_add_driver(&wm8988_i2c_driver);
1043 if (ret != 0)
1044 pr_err("WM8988: Unable to register I2C driver: %d\n", ret);
1045 #endif
1046 #if defined(CONFIG_SPI_MASTER)
1047 ret = spi_register_driver(&wm8988_spi_driver);
1048 if (ret != 0)
1049 pr_err("WM8988: Unable to register SPI driver: %d\n", ret);
1050 #endif
1051 return ret;
1052 }
1053 module_init(wm8988_modinit);
1054
1055 static void __exit wm8988_exit(void)
1056 {
1057 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
1058 i2c_del_driver(&wm8988_i2c_driver);
1059 #endif
1060 #if defined(CONFIG_SPI_MASTER)
1061 spi_unregister_driver(&wm8988_spi_driver);
1062 #endif
1063 }
1064 module_exit(wm8988_exit);
1065
1066
1067 MODULE_DESCRIPTION("ASoC WM8988 driver");
1068 MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
1069 MODULE_LICENSE("GPL");
Linux for Ginger Game Console