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GUI: Fix Tomato RAF theme for all builds. Compilation typo.
[tomato.git] / release / src-rt-6.x.4708 / linux / linux-2.6.36 / sound / soc / codecs / wm8988.c
blob19ad590ca0b390065850ce4ab8b0e4e2fd5d841a
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 <linux/slab.h>
23 #include <sound/core.h>
24 #include <sound/pcm.h>
25 #include <sound/pcm_params.h>
26 #include <sound/tlv.h>
27 #include <sound/soc.h>
28 #include <sound/soc-dapm.h>
29 #include <sound/initval.h>
30
31 #include "wm8988.h"
32
33 /*
34 * wm8988 register cache
35 * We can't read the WM8988 register space when we
36 * are using 2 wire for device control, so we cache them instead.
37 */
38 static const u16 wm8988_reg[] = {
39 0x0097, 0x0097, 0x0079, 0x0079, /* 0 */
40 0x0000, 0x0008, 0x0000, 0x000a, /* 4 */
41 0x0000, 0x0000, 0x00ff, 0x00ff, /* 8 */
42 0x000f, 0x000f, 0x0000, 0x0000, /* 12 */
43 0x0000, 0x007b, 0x0000, 0x0032, /* 16 */
44 0x0000, 0x00c3, 0x00c3, 0x00c0, /* 20 */
45 0x0000, 0x0000, 0x0000, 0x0000, /* 24 */
46 0x0000, 0x0000, 0x0000, 0x0000, /* 28 */
47 0x0000, 0x0000, 0x0050, 0x0050, /* 32 */
48 0x0050, 0x0050, 0x0050, 0x0050, /* 36 */
49 0x0079, 0x0079, 0x0079, /* 40 */
50 };
51
52 /* codec private data */
53 struct wm8988_priv {
54 unsigned int sysclk;
55 struct snd_soc_codec codec;
56 struct snd_pcm_hw_constraint_list *sysclk_constraints;
57 u16 reg_cache[WM8988_NUM_REG];
58 };
59
60
61 #define wm8988_reset(c) snd_soc_write(c, WM8988_RESET, 0)
62
63 /*
64 * WM8988 Controls
65 */
66
67 static const char *bass_boost_txt[] = {"Linear Control", "Adaptive Boost"};
68 static const struct soc_enum bass_boost =
69 SOC_ENUM_SINGLE(WM8988_BASS, 7, 2, bass_boost_txt);
70
71 static const char *bass_filter_txt[] = { "130Hz @ 48kHz", "200Hz @ 48kHz" };
72 static const struct soc_enum bass_filter =
73 SOC_ENUM_SINGLE(WM8988_BASS, 6, 2, bass_filter_txt);
74
75 static const char *treble_txt[] = {"8kHz", "4kHz"};
76 static const struct soc_enum treble =
77 SOC_ENUM_SINGLE(WM8988_TREBLE, 6, 2, treble_txt);
78
79 static const char *stereo_3d_lc_txt[] = {"200Hz", "500Hz"};
80 static const struct soc_enum stereo_3d_lc =
81 SOC_ENUM_SINGLE(WM8988_3D, 5, 2, stereo_3d_lc_txt);
82
83 static const char *stereo_3d_uc_txt[] = {"2.2kHz", "1.5kHz"};
84 static const struct soc_enum stereo_3d_uc =
85 SOC_ENUM_SINGLE(WM8988_3D, 6, 2, stereo_3d_uc_txt);
86
87 static const char *stereo_3d_func_txt[] = {"Capture", "Playback"};
88 static const struct soc_enum stereo_3d_func =
89 SOC_ENUM_SINGLE(WM8988_3D, 7, 2, stereo_3d_func_txt);
90
91 static const char *alc_func_txt[] = {"Off", "Right", "Left", "Stereo"};
92 static const struct soc_enum alc_func =
93 SOC_ENUM_SINGLE(WM8988_ALC1, 7, 4, alc_func_txt);
94
95 static const char *ng_type_txt[] = {"Constant PGA Gain",
96 "Mute ADC Output"};
97 static const struct soc_enum ng_type =
98 SOC_ENUM_SINGLE(WM8988_NGATE, 1, 2, ng_type_txt);
99
100 static const char *deemph_txt[] = {"None", "32Khz", "44.1Khz", "48Khz"};
101 static const struct soc_enum deemph =
102 SOC_ENUM_SINGLE(WM8988_ADCDAC, 1, 4, deemph_txt);
103
104 static const char *adcpol_txt[] = {"Normal", "L Invert", "R Invert",
105 "L + R Invert"};
106 static const struct soc_enum adcpol =
107 SOC_ENUM_SINGLE(WM8988_ADCDAC, 5, 4, adcpol_txt);
108
109 static const DECLARE_TLV_DB_SCALE(pga_tlv, -1725, 75, 0);
110 static const DECLARE_TLV_DB_SCALE(adc_tlv, -9750, 50, 1);
111 static const DECLARE_TLV_DB_SCALE(dac_tlv, -12750, 50, 1);
112 static const DECLARE_TLV_DB_SCALE(out_tlv, -12100, 100, 1);
113 static const DECLARE_TLV_DB_SCALE(bypass_tlv, -1500, 300, 0);
114
115 static const struct snd_kcontrol_new wm8988_snd_controls[] = {
116
117 SOC_ENUM("Bass Boost", bass_boost),
118 SOC_ENUM("Bass Filter", bass_filter),
119 SOC_SINGLE("Bass Volume", WM8988_BASS, 0, 15, 1),
120
121 SOC_SINGLE("Treble Volume", WM8988_TREBLE, 0, 15, 0),
122 SOC_ENUM("Treble Cut-off", treble),
123
124 SOC_SINGLE("3D Switch", WM8988_3D, 0, 1, 0),
125 SOC_SINGLE("3D Volume", WM8988_3D, 1, 15, 0),
126 SOC_ENUM("3D Lower Cut-off", stereo_3d_lc),
127 SOC_ENUM("3D Upper Cut-off", stereo_3d_uc),
128 SOC_ENUM("3D Mode", stereo_3d_func),
129
130 SOC_SINGLE("ALC Capture Target Volume", WM8988_ALC1, 0, 7, 0),
131 SOC_SINGLE("ALC Capture Max Volume", WM8988_ALC1, 4, 7, 0),
132 SOC_ENUM("ALC Capture Function", alc_func),
133 SOC_SINGLE("ALC Capture ZC Switch", WM8988_ALC2, 7, 1, 0),
134 SOC_SINGLE("ALC Capture Hold Time", WM8988_ALC2, 0, 15, 0),
135 SOC_SINGLE("ALC Capture Decay Time", WM8988_ALC3, 4, 15, 0),
136 SOC_SINGLE("ALC Capture Attack Time", WM8988_ALC3, 0, 15, 0),
137 SOC_SINGLE("ALC Capture NG Threshold", WM8988_NGATE, 3, 31, 0),
138 SOC_ENUM("ALC Capture NG Type", ng_type),
139 SOC_SINGLE("ALC Capture NG Switch", WM8988_NGATE, 0, 1, 0),
140
141 SOC_SINGLE("ZC Timeout Switch", WM8988_ADCTL1, 0, 1, 0),
142
143 SOC_DOUBLE_R_TLV("Capture Digital Volume", WM8988_LADC, WM8988_RADC,
144 0, 255, 0, adc_tlv),
145 SOC_DOUBLE_R_TLV("Capture Volume", WM8988_LINVOL, WM8988_RINVOL,
146 0, 63, 0, pga_tlv),
147 SOC_DOUBLE_R("Capture ZC Switch", WM8988_LINVOL, WM8988_RINVOL, 6, 1, 0),
148 SOC_DOUBLE_R("Capture Switch", WM8988_LINVOL, WM8988_RINVOL, 7, 1, 1),
149
150 SOC_ENUM("Playback De-emphasis", deemph),
151
152 SOC_ENUM("Capture Polarity", adcpol),
153 SOC_SINGLE("Playback 6dB Attenuate", WM8988_ADCDAC, 7, 1, 0),
154 SOC_SINGLE("Capture 6dB Attenuate", WM8988_ADCDAC, 8, 1, 0),
155
156 SOC_DOUBLE_R_TLV("PCM Volume", WM8988_LDAC, WM8988_RDAC, 0, 255, 0, dac_tlv),
157
158 SOC_SINGLE_TLV("Left Mixer Left Bypass Volume", WM8988_LOUTM1, 4, 7, 1,
159 bypass_tlv),
160 SOC_SINGLE_TLV("Left Mixer Right Bypass Volume", WM8988_LOUTM2, 4, 7, 1,
161 bypass_tlv),
162 SOC_SINGLE_TLV("Right Mixer Left Bypass Volume", WM8988_ROUTM1, 4, 7, 1,
163 bypass_tlv),
164 SOC_SINGLE_TLV("Right Mixer Right Bypass Volume", WM8988_ROUTM2, 4, 7, 1,
165 bypass_tlv),
166
167 SOC_DOUBLE_R("Output 1 Playback ZC Switch", WM8988_LOUT1V,
168 WM8988_ROUT1V, 7, 1, 0),
169 SOC_DOUBLE_R_TLV("Output 1 Playback Volume", WM8988_LOUT1V, WM8988_ROUT1V,
170 0, 127, 0, out_tlv),
171
172 SOC_DOUBLE_R("Output 2 Playback ZC Switch", WM8988_LOUT2V,
173 WM8988_ROUT2V, 7, 1, 0),
174 SOC_DOUBLE_R_TLV("Output 2 Playback Volume", WM8988_LOUT2V, WM8988_ROUT2V,
175 0, 127, 0, out_tlv),
176
177 };
178
179 /*
180 * DAPM Controls
181 */
182
183 static int wm8988_lrc_control(struct snd_soc_dapm_widget *w,
184 struct snd_kcontrol *kcontrol, int event)
185 {
186 struct snd_soc_codec *codec = w->codec;
187 u16 adctl2 = snd_soc_read(codec, WM8988_ADCTL2);
188
189 /* Use the DAC to gate LRC if active, otherwise use ADC */
190 if (snd_soc_read(codec, WM8988_PWR2) & 0x180)
191 adctl2 &= ~0x4;
192 else
193 adctl2 |= 0x4;
194
195 return snd_soc_write(codec, WM8988_ADCTL2, adctl2);
196 }
197
198 static const char *wm8988_line_texts[] = {
199 "Line 1", "Line 2", "PGA", "Differential"};
200
201 static const unsigned int wm8988_line_values[] = {
202 0, 1, 3, 4};
203
204 static const struct soc_enum wm8988_lline_enum =
205 SOC_VALUE_ENUM_SINGLE(WM8988_LOUTM1, 0, 7,
206 ARRAY_SIZE(wm8988_line_texts),
207 wm8988_line_texts,
208 wm8988_line_values);
209 static const struct snd_kcontrol_new wm8988_left_line_controls =
210 SOC_DAPM_VALUE_ENUM("Route", wm8988_lline_enum);
211
212 static const struct soc_enum wm8988_rline_enum =
213 SOC_VALUE_ENUM_SINGLE(WM8988_ROUTM1, 0, 7,
214 ARRAY_SIZE(wm8988_line_texts),
215 wm8988_line_texts,
216 wm8988_line_values);
217 static const struct snd_kcontrol_new wm8988_right_line_controls =
218 SOC_DAPM_VALUE_ENUM("Route", wm8988_lline_enum);
219
220 /* Left Mixer */
221 static const struct snd_kcontrol_new wm8988_left_mixer_controls[] = {
222 SOC_DAPM_SINGLE("Playback Switch", WM8988_LOUTM1, 8, 1, 0),
223 SOC_DAPM_SINGLE("Left Bypass Switch", WM8988_LOUTM1, 7, 1, 0),
224 SOC_DAPM_SINGLE("Right Playback Switch", WM8988_LOUTM2, 8, 1, 0),
225 SOC_DAPM_SINGLE("Right Bypass Switch", WM8988_LOUTM2, 7, 1, 0),
226 };
227
228 /* Right Mixer */
229 static const struct snd_kcontrol_new wm8988_right_mixer_controls[] = {
230 SOC_DAPM_SINGLE("Left Playback Switch", WM8988_ROUTM1, 8, 1, 0),
231 SOC_DAPM_SINGLE("Left Bypass Switch", WM8988_ROUTM1, 7, 1, 0),
232 SOC_DAPM_SINGLE("Playback Switch", WM8988_ROUTM2, 8, 1, 0),
233 SOC_DAPM_SINGLE("Right Bypass Switch", WM8988_ROUTM2, 7, 1, 0),
234 };
235
236 static const char *wm8988_pga_sel[] = {"Line 1", "Line 2", "Differential"};
237 static const unsigned int wm8988_pga_val[] = { 0, 1, 3 };
238
239 /* Left PGA Mux */
240 static const struct soc_enum wm8988_lpga_enum =
241 SOC_VALUE_ENUM_SINGLE(WM8988_LADCIN, 6, 3,
242 ARRAY_SIZE(wm8988_pga_sel),
243 wm8988_pga_sel,
244 wm8988_pga_val);
245 static const struct snd_kcontrol_new wm8988_left_pga_controls =
246 SOC_DAPM_VALUE_ENUM("Route", wm8988_lpga_enum);
247
248 /* Right PGA Mux */
249 static const struct soc_enum wm8988_rpga_enum =
250 SOC_VALUE_ENUM_SINGLE(WM8988_RADCIN, 6, 3,
251 ARRAY_SIZE(wm8988_pga_sel),
252 wm8988_pga_sel,
253 wm8988_pga_val);
254 static const struct snd_kcontrol_new wm8988_right_pga_controls =
255 SOC_DAPM_VALUE_ENUM("Route", wm8988_rpga_enum);
256
257 /* Differential Mux */
258 static const char *wm8988_diff_sel[] = {"Line 1", "Line 2"};
259 static const struct soc_enum diffmux =
260 SOC_ENUM_SINGLE(WM8988_ADCIN, 8, 2, wm8988_diff_sel);
261 static const struct snd_kcontrol_new wm8988_diffmux_controls =
262 SOC_DAPM_ENUM("Route", diffmux);
263
264 /* Mono ADC Mux */
265 static const char *wm8988_mono_mux[] = {"Stereo", "Mono (Left)",
266 "Mono (Right)", "Digital Mono"};
267 static const struct soc_enum monomux =
268 SOC_ENUM_SINGLE(WM8988_ADCIN, 6, 4, wm8988_mono_mux);
269 static const struct snd_kcontrol_new wm8988_monomux_controls =
270 SOC_DAPM_ENUM("Route", monomux);
271
272 static const struct snd_soc_dapm_widget wm8988_dapm_widgets[] = {
273 SND_SOC_DAPM_MICBIAS("Mic Bias", WM8988_PWR1, 1, 0),
274
275 SND_SOC_DAPM_MUX("Differential Mux", SND_SOC_NOPM, 0, 0,
276 &wm8988_diffmux_controls),
277 SND_SOC_DAPM_MUX("Left ADC Mux", SND_SOC_NOPM, 0, 0,
278 &wm8988_monomux_controls),
279 SND_SOC_DAPM_MUX("Right ADC Mux", SND_SOC_NOPM, 0, 0,
280 &wm8988_monomux_controls),
281
282 SND_SOC_DAPM_MUX("Left PGA Mux", WM8988_PWR1, 5, 0,
283 &wm8988_left_pga_controls),
284 SND_SOC_DAPM_MUX("Right PGA Mux", WM8988_PWR1, 4, 0,
285 &wm8988_right_pga_controls),
286
287 SND_SOC_DAPM_MUX("Left Line Mux", SND_SOC_NOPM, 0, 0,
288 &wm8988_left_line_controls),
289 SND_SOC_DAPM_MUX("Right Line Mux", SND_SOC_NOPM, 0, 0,
290 &wm8988_right_line_controls),
291
292 SND_SOC_DAPM_ADC("Right ADC", "Right Capture", WM8988_PWR1, 2, 0),
293 SND_SOC_DAPM_ADC("Left ADC", "Left Capture", WM8988_PWR1, 3, 0),
294
295 SND_SOC_DAPM_DAC("Right DAC", "Right Playback", WM8988_PWR2, 7, 0),
296 SND_SOC_DAPM_DAC("Left DAC", "Left Playback", WM8988_PWR2, 8, 0),
297
298 SND_SOC_DAPM_MIXER("Left Mixer", SND_SOC_NOPM, 0, 0,
299 &wm8988_left_mixer_controls[0],
300 ARRAY_SIZE(wm8988_left_mixer_controls)),
301 SND_SOC_DAPM_MIXER("Right Mixer", SND_SOC_NOPM, 0, 0,
302 &wm8988_right_mixer_controls[0],
303 ARRAY_SIZE(wm8988_right_mixer_controls)),
304
305 SND_SOC_DAPM_PGA("Right Out 2", WM8988_PWR2, 3, 0, NULL, 0),
306 SND_SOC_DAPM_PGA("Left Out 2", WM8988_PWR2, 4, 0, NULL, 0),
307 SND_SOC_DAPM_PGA("Right Out 1", WM8988_PWR2, 5, 0, NULL, 0),
308 SND_SOC_DAPM_PGA("Left Out 1", WM8988_PWR2, 6, 0, NULL, 0),
309
310 SND_SOC_DAPM_POST("LRC control", wm8988_lrc_control),
311
312 SND_SOC_DAPM_OUTPUT("LOUT1"),
313 SND_SOC_DAPM_OUTPUT("ROUT1"),
314 SND_SOC_DAPM_OUTPUT("LOUT2"),
315 SND_SOC_DAPM_OUTPUT("ROUT2"),
316 SND_SOC_DAPM_OUTPUT("VREF"),
317
318 SND_SOC_DAPM_INPUT("LINPUT1"),
319 SND_SOC_DAPM_INPUT("LINPUT2"),
320 SND_SOC_DAPM_INPUT("RINPUT1"),
321 SND_SOC_DAPM_INPUT("RINPUT2"),
322 };
323
324 static const struct snd_soc_dapm_route audio_map[] = {
325
326 { "Left Line Mux", "Line 1", "LINPUT1" },
327 { "Left Line Mux", "Line 2", "LINPUT2" },
328 { "Left Line Mux", "PGA", "Left PGA Mux" },
329 { "Left Line Mux", "Differential", "Differential Mux" },
330
331 { "Right Line Mux", "Line 1", "RINPUT1" },
332 { "Right Line Mux", "Line 2", "RINPUT2" },
333 { "Right Line Mux", "PGA", "Right PGA Mux" },
334 { "Right Line Mux", "Differential", "Differential Mux" },
335
336 { "Left PGA Mux", "Line 1", "LINPUT1" },
337 { "Left PGA Mux", "Line 2", "LINPUT2" },
338 { "Left PGA Mux", "Differential", "Differential Mux" },
339
340 { "Right PGA Mux", "Line 1", "RINPUT1" },
341 { "Right PGA Mux", "Line 2", "RINPUT2" },
342 { "Right PGA Mux", "Differential", "Differential Mux" },
343
344 { "Differential Mux", "Line 1", "LINPUT1" },
345 { "Differential Mux", "Line 1", "RINPUT1" },
346 { "Differential Mux", "Line 2", "LINPUT2" },
347 { "Differential Mux", "Line 2", "RINPUT2" },
348
349 { "Left ADC Mux", "Stereo", "Left PGA Mux" },
350 { "Left ADC Mux", "Mono (Left)", "Left PGA Mux" },
351 { "Left ADC Mux", "Digital Mono", "Left PGA Mux" },
352
353 { "Right ADC Mux", "Stereo", "Right PGA Mux" },
354 { "Right ADC Mux", "Mono (Right)", "Right PGA Mux" },
355 { "Right ADC Mux", "Digital Mono", "Right PGA Mux" },
356
357 { "Left ADC", NULL, "Left ADC Mux" },
358 { "Right ADC", NULL, "Right ADC Mux" },
359
360 { "Left Line Mux", "Line 1", "LINPUT1" },
361 { "Left Line Mux", "Line 2", "LINPUT2" },
362 { "Left Line Mux", "PGA", "Left PGA Mux" },
363 { "Left Line Mux", "Differential", "Differential Mux" },
364
365 { "Right Line Mux", "Line 1", "RINPUT1" },
366 { "Right Line Mux", "Line 2", "RINPUT2" },
367 { "Right Line Mux", "PGA", "Right PGA Mux" },
368 { "Right Line Mux", "Differential", "Differential Mux" },
369
370 { "Left Mixer", "Playback Switch", "Left DAC" },
371 { "Left Mixer", "Left Bypass Switch", "Left Line Mux" },
372 { "Left Mixer", "Right Playback Switch", "Right DAC" },
373 { "Left Mixer", "Right Bypass Switch", "Right Line Mux" },
374
375 { "Right Mixer", "Left Playback Switch", "Left DAC" },
376 { "Right Mixer", "Left Bypass Switch", "Left Line Mux" },
377 { "Right Mixer", "Playback Switch", "Right DAC" },
378 { "Right Mixer", "Right Bypass Switch", "Right Line Mux" },
379
380 { "Left Out 1", NULL, "Left Mixer" },
381 { "LOUT1", NULL, "Left Out 1" },
382 { "Right Out 1", NULL, "Right Mixer" },
383 { "ROUT1", NULL, "Right Out 1" },
384
385 { "Left Out 2", NULL, "Left Mixer" },
386 { "LOUT2", NULL, "Left Out 2" },
387 { "Right Out 2", NULL, "Right Mixer" },
388 { "ROUT2", NULL, "Right Out 2" },
389 };
390
391 struct _coeff_div {
392 u32 mclk;
393 u32 rate;
394 u16 fs;
395 u8 sr:5;
396 u8 usb:1;
397 };
398
399 /* codec hifi mclk clock divider coefficients */
400 static const struct _coeff_div coeff_div[] = {
401 /* 8k */
402 {12288000, 8000, 1536, 0x6, 0x0},
403 {11289600, 8000, 1408, 0x16, 0x0},
404 {18432000, 8000, 2304, 0x7, 0x0},
405 {16934400, 8000, 2112, 0x17, 0x0},
406 {12000000, 8000, 1500, 0x6, 0x1},
407
408 /* 11.025k */
409 {11289600, 11025, 1024, 0x18, 0x0},
410 {16934400, 11025, 1536, 0x19, 0x0},
411 {12000000, 11025, 1088, 0x19, 0x1},
412
413 /* 16k */
414 {12288000, 16000, 768, 0xa, 0x0},
415 {18432000, 16000, 1152, 0xb, 0x0},
416 {12000000, 16000, 750, 0xa, 0x1},
417
418 /* 22.05k */
419 {11289600, 22050, 512, 0x1a, 0x0},
420 {16934400, 22050, 768, 0x1b, 0x0},
421 {12000000, 22050, 544, 0x1b, 0x1},
422
423 /* 32k */
424 {12288000, 32000, 384, 0xc, 0x0},
425 {18432000, 32000, 576, 0xd, 0x0},
426 {12000000, 32000, 375, 0xa, 0x1},
427
428 /* 44.1k */
429 {11289600, 44100, 256, 0x10, 0x0},
430 {16934400, 44100, 384, 0x11, 0x0},
431 {12000000, 44100, 272, 0x11, 0x1},
432
433 /* 48k */
434 {12288000, 48000, 256, 0x0, 0x0},
435 {18432000, 48000, 384, 0x1, 0x0},
436 {12000000, 48000, 250, 0x0, 0x1},
437
438 /* 88.2k */
439 {11289600, 88200, 128, 0x1e, 0x0},
440 {16934400, 88200, 192, 0x1f, 0x0},
441 {12000000, 88200, 136, 0x1f, 0x1},
442
443 /* 96k */
444 {12288000, 96000, 128, 0xe, 0x0},
445 {18432000, 96000, 192, 0xf, 0x0},
446 {12000000, 96000, 125, 0xe, 0x1},
447 };
448
449 static inline int get_coeff(int mclk, int rate)
450 {
451 int i;
452
453 for (i = 0; i < ARRAY_SIZE(coeff_div); i++) {
454 if (coeff_div[i].rate == rate && coeff_div[i].mclk == mclk)
455 return i;
456 }
457
458 return -EINVAL;
459 }
460
461 /* The set of rates we can generate from the above for each SYSCLK */
462
463 static unsigned int rates_12288[] = {
464 8000, 12000, 16000, 24000, 24000, 32000, 48000, 96000,
465 };
466
467 static struct snd_pcm_hw_constraint_list constraints_12288 = {
468 .count = ARRAY_SIZE(rates_12288),
469 .list = rates_12288,
470 };
471
472 static unsigned int rates_112896[] = {
473 8000, 11025, 22050, 44100,
474 };
475
476 static struct snd_pcm_hw_constraint_list constraints_112896 = {
477 .count = ARRAY_SIZE(rates_112896),
478 .list = rates_112896,
479 };
480
481 static unsigned int rates_12[] = {
482 8000, 11025, 12000, 16000, 22050, 2400, 32000, 41100, 48000,
483 48000, 88235, 96000,
484 };
485
486 static struct snd_pcm_hw_constraint_list constraints_12 = {
487 .count = ARRAY_SIZE(rates_12),
488 .list = rates_12,
489 };
490
491 /*
492 * Note that this should be called from init rather than from hw_params.
493 */
494 static int wm8988_set_dai_sysclk(struct snd_soc_dai *codec_dai,
495 int clk_id, unsigned int freq, int dir)
496 {
497 struct snd_soc_codec *codec = codec_dai->codec;
498 struct wm8988_priv *wm8988 = snd_soc_codec_get_drvdata(codec);
499
500 switch (freq) {
501 case 11289600:
502 case 18432000:
503 case 22579200:
504 case 36864000:
505 wm8988->sysclk_constraints = &constraints_112896;
506 wm8988->sysclk = freq;
507 return 0;
508
509 case 12288000:
510 case 16934400:
511 case 24576000:
512 case 33868800:
513 wm8988->sysclk_constraints = &constraints_12288;
514 wm8988->sysclk = freq;
515 return 0;
516
517 case 12000000:
518 case 24000000:
519 wm8988->sysclk_constraints = &constraints_12;
520 wm8988->sysclk = freq;
521 return 0;
522 }
523 return -EINVAL;
524 }
525
526 static int wm8988_set_dai_fmt(struct snd_soc_dai *codec_dai,
527 unsigned int fmt)
528 {
529 struct snd_soc_codec *codec = codec_dai->codec;
530 u16 iface = 0;
531
532 /* set master/slave audio interface */
533 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
534 case SND_SOC_DAIFMT_CBM_CFM:
535 iface = 0x0040;
536 break;
537 case SND_SOC_DAIFMT_CBS_CFS:
538 break;
539 default:
540 return -EINVAL;
541 }
542
543 /* interface format */
544 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
545 case SND_SOC_DAIFMT_I2S:
546 iface |= 0x0002;
547 break;
548 case SND_SOC_DAIFMT_RIGHT_J:
549 break;
550 case SND_SOC_DAIFMT_LEFT_J:
551 iface |= 0x0001;
552 break;
553 case SND_SOC_DAIFMT_DSP_A:
554 iface |= 0x0003;
555 break;
556 case SND_SOC_DAIFMT_DSP_B:
557 iface |= 0x0013;
558 break;
559 default:
560 return -EINVAL;
561 }
562
563 /* clock inversion */
564 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
565 case SND_SOC_DAIFMT_NB_NF:
566 break;
567 case SND_SOC_DAIFMT_IB_IF:
568 iface |= 0x0090;
569 break;
570 case SND_SOC_DAIFMT_IB_NF:
571 iface |= 0x0080;
572 break;
573 case SND_SOC_DAIFMT_NB_IF:
574 iface |= 0x0010;
575 break;
576 default:
577 return -EINVAL;
578 }
579
580 snd_soc_write(codec, WM8988_IFACE, iface);
581 return 0;
582 }
583
584 static int wm8988_pcm_startup(struct snd_pcm_substream *substream,
585 struct snd_soc_dai *dai)
586 {
587 struct snd_soc_codec *codec = dai->codec;
588 struct wm8988_priv *wm8988 = snd_soc_codec_get_drvdata(codec);
589
590 /* The set of sample rates that can be supported depends on the
591 * MCLK supplied to the CODEC - enforce this.
592 */
593 if (!wm8988->sysclk) {
594 dev_err(codec->dev,
595 "No MCLK configured, call set_sysclk() on init\n");
596 return -EINVAL;
597 }
598
599 snd_pcm_hw_constraint_list(substream->runtime, 0,
600 SNDRV_PCM_HW_PARAM_RATE,
601 wm8988->sysclk_constraints);
602
603 return 0;
604 }
605
606 static int wm8988_pcm_hw_params(struct snd_pcm_substream *substream,
607 struct snd_pcm_hw_params *params,
608 struct snd_soc_dai *dai)
609 {
610 struct snd_soc_pcm_runtime *rtd = substream->private_data;
611 struct snd_soc_device *socdev = rtd->socdev;
612 struct snd_soc_codec *codec = socdev->card->codec;
613 struct wm8988_priv *wm8988 = snd_soc_codec_get_drvdata(codec);
614 u16 iface = snd_soc_read(codec, WM8988_IFACE) & 0x1f3;
615 u16 srate = snd_soc_read(codec, WM8988_SRATE) & 0x180;
616 int coeff;
617
618 coeff = get_coeff(wm8988->sysclk, params_rate(params));
619 if (coeff < 0) {
620 coeff = get_coeff(wm8988->sysclk / 2, params_rate(params));
621 srate |= 0x40;
622 }
623 if (coeff < 0) {
624 dev_err(codec->dev,
625 "Unable to configure sample rate %dHz with %dHz MCLK\n",
626 params_rate(params), wm8988->sysclk);
627 return coeff;
628 }
629
630 /* bit size */
631 switch (params_format(params)) {
632 case SNDRV_PCM_FORMAT_S16_LE:
633 break;
634 case SNDRV_PCM_FORMAT_S20_3LE:
635 iface |= 0x0004;
636 break;
637 case SNDRV_PCM_FORMAT_S24_LE:
638 iface |= 0x0008;
639 break;
640 case SNDRV_PCM_FORMAT_S32_LE:
641 iface |= 0x000c;
642 break;
643 }
644
645 /* set iface & srate */
646 snd_soc_write(codec, WM8988_IFACE, iface);
647 if (coeff >= 0)
648 snd_soc_write(codec, WM8988_SRATE, srate |
649 (coeff_div[coeff].sr << 1) | coeff_div[coeff].usb);
650
651 return 0;
652 }
653
654 static int wm8988_mute(struct snd_soc_dai *dai, int mute)
655 {
656 struct snd_soc_codec *codec = dai->codec;
657 u16 mute_reg = snd_soc_read(codec, WM8988_ADCDAC) & 0xfff7;
658
659 if (mute)
660 snd_soc_write(codec, WM8988_ADCDAC, mute_reg | 0x8);
661 else
662 snd_soc_write(codec, WM8988_ADCDAC, mute_reg);
663 return 0;
664 }
665
666 static int wm8988_set_bias_level(struct snd_soc_codec *codec,
667 enum snd_soc_bias_level level)
668 {
669 u16 pwr_reg = snd_soc_read(codec, WM8988_PWR1) & ~0x1c1;
670
671 switch (level) {
672 case SND_SOC_BIAS_ON:
673 break;
674
675 case SND_SOC_BIAS_PREPARE:
676 /* VREF, VMID=2x50k, digital enabled */
677 snd_soc_write(codec, WM8988_PWR1, pwr_reg | 0x00c0);
678 break;
679
680 case SND_SOC_BIAS_STANDBY:
681 if (codec->bias_level == SND_SOC_BIAS_OFF) {
682 /* VREF, VMID=2x5k */
683 snd_soc_write(codec, WM8988_PWR1, pwr_reg | 0x1c1);
684
685 /* Charge caps */
686 msleep(100);
687 }
688
689 /* VREF, VMID=2*500k, digital stopped */
690 snd_soc_write(codec, WM8988_PWR1, pwr_reg | 0x0141);
691 break;
692
693 case SND_SOC_BIAS_OFF:
694 snd_soc_write(codec, WM8988_PWR1, 0x0000);
695 break;
696 }
697 codec->bias_level = level;
698 return 0;
699 }
700
701 #define WM8988_RATES SNDRV_PCM_RATE_8000_96000
702
703 #define WM8988_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
704 SNDRV_PCM_FMTBIT_S24_LE)
705
706 static struct snd_soc_dai_ops wm8988_ops = {
707 .startup = wm8988_pcm_startup,
708 .hw_params = wm8988_pcm_hw_params,
709 .set_fmt = wm8988_set_dai_fmt,
710 .set_sysclk = wm8988_set_dai_sysclk,
711 .digital_mute = wm8988_mute,
712 };
713
714 struct snd_soc_dai wm8988_dai = {
715 .name = "WM8988",
716 .playback = {
717 .stream_name = "Playback",
718 .channels_min = 1,
719 .channels_max = 2,
720 .rates = WM8988_RATES,
721 .formats = WM8988_FORMATS,
722 },
723 .capture = {
724 .stream_name = "Capture",
725 .channels_min = 1,
726 .channels_max = 2,
727 .rates = WM8988_RATES,
728 .formats = WM8988_FORMATS,
729 },
730 .ops = &wm8988_ops,
731 .symmetric_rates = 1,
732 };
733 EXPORT_SYMBOL_GPL(wm8988_dai);
734
735 static int wm8988_suspend(struct platform_device *pdev, pm_message_t state)
736 {
737 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
738 struct snd_soc_codec *codec = socdev->card->codec;
739
740 wm8988_set_bias_level(codec, SND_SOC_BIAS_OFF);
741 return 0;
742 }
743
744 static int wm8988_resume(struct platform_device *pdev)
745 {
746 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
747 struct snd_soc_codec *codec = socdev->card->codec;
748 int i;
749 u8 data[2];
750 u16 *cache = codec->reg_cache;
751
752 /* Sync reg_cache with the hardware */
753 for (i = 0; i < WM8988_NUM_REG; i++) {
754 if (i == WM8988_RESET)
755 continue;
756 data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001);
757 data[1] = cache[i] & 0x00ff;
758 codec->hw_write(codec->control_data, data, 2);
759 }
760
761 wm8988_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
762
763 return 0;
764 }
765
766 static struct snd_soc_codec *wm8988_codec;
767
768 static int wm8988_probe(struct platform_device *pdev)
769 {
770 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
771 struct snd_soc_codec *codec;
772 int ret = 0;
773
774 if (wm8988_codec == NULL) {
775 dev_err(&pdev->dev, "Codec device not registered\n");
776 return -ENODEV;
777 }
778
779 socdev->card->codec = wm8988_codec;
780 codec = wm8988_codec;
781
782 /* register pcms */
783 ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
784 if (ret < 0) {
785 dev_err(codec->dev, "failed to create pcms: %d\n", ret);
786 goto pcm_err;
787 }
788
789 snd_soc_add_controls(codec, wm8988_snd_controls,
790 ARRAY_SIZE(wm8988_snd_controls));
791 snd_soc_dapm_new_controls(codec, wm8988_dapm_widgets,
792 ARRAY_SIZE(wm8988_dapm_widgets));
793 snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
794
795 return ret;
796
797 pcm_err:
798 return ret;
799 }
800
801 static int wm8988_remove(struct platform_device *pdev)
802 {
803 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
804
805 snd_soc_free_pcms(socdev);
806 snd_soc_dapm_free(socdev);
807
808 return 0;
809 }
810
811 struct snd_soc_codec_device soc_codec_dev_wm8988 = {
812 .probe = wm8988_probe,
813 .remove = wm8988_remove,
814 .suspend = wm8988_suspend,
815 .resume = wm8988_resume,
816 };
817 EXPORT_SYMBOL_GPL(soc_codec_dev_wm8988);
818
819 static int wm8988_register(struct wm8988_priv *wm8988,
820 enum snd_soc_control_type control)
821 {
822 struct snd_soc_codec *codec = &wm8988->codec;
823 int ret;
824 u16 reg;
825
826 if (wm8988_codec) {
827 dev_err(codec->dev, "Another WM8988 is registered\n");
828 ret = -EINVAL;
829 goto err;
830 }
831
832 mutex_init(&codec->mutex);
833 INIT_LIST_HEAD(&codec->dapm_widgets);
834 INIT_LIST_HEAD(&codec->dapm_paths);
835
836 snd_soc_codec_set_drvdata(codec, wm8988);
837 codec->name = "WM8988";
838 codec->owner = THIS_MODULE;
839 codec->dai = &wm8988_dai;
840 codec->num_dai = 1;
841 codec->reg_cache_size = ARRAY_SIZE(wm8988->reg_cache);
842 codec->reg_cache = &wm8988->reg_cache;
843 codec->bias_level = SND_SOC_BIAS_OFF;
844 codec->set_bias_level = wm8988_set_bias_level;
845
846 memcpy(codec->reg_cache, wm8988_reg,
847 sizeof(wm8988_reg));
848
849 ret = snd_soc_codec_set_cache_io(codec, 7, 9, control);
850 if (ret < 0) {
851 dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
852 goto err;
853 }
854
855 ret = wm8988_reset(codec);
856 if (ret < 0) {
857 dev_err(codec->dev, "Failed to issue reset\n");
858 goto err;
859 }
860
861 /* set the update bits (we always update left then right) */
862 reg = snd_soc_read(codec, WM8988_RADC);
863 snd_soc_write(codec, WM8988_RADC, reg | 0x100);
864 reg = snd_soc_read(codec, WM8988_RDAC);
865 snd_soc_write(codec, WM8988_RDAC, reg | 0x0100);
866 reg = snd_soc_read(codec, WM8988_ROUT1V);
867 snd_soc_write(codec, WM8988_ROUT1V, reg | 0x0100);
868 reg = snd_soc_read(codec, WM8988_ROUT2V);
869 snd_soc_write(codec, WM8988_ROUT2V, reg | 0x0100);
870 reg = snd_soc_read(codec, WM8988_RINVOL);
871 snd_soc_write(codec, WM8988_RINVOL, reg | 0x0100);
872
873 wm8988_set_bias_level(&wm8988->codec, SND_SOC_BIAS_STANDBY);
874
875 wm8988_dai.dev = codec->dev;
876
877 wm8988_codec = codec;
878
879 ret = snd_soc_register_codec(codec);
880 if (ret != 0) {
881 dev_err(codec->dev, "Failed to register codec: %d\n", ret);
882 goto err;
883 }
884
885 ret = snd_soc_register_dai(&wm8988_dai);
886 if (ret != 0) {
887 dev_err(codec->dev, "Failed to register DAI: %d\n", ret);
888 goto err_codec;
889 }
890
891 return 0;
892
893 err_codec:
894 snd_soc_unregister_codec(codec);
895 err:
896 kfree(wm8988);
897 return ret;
898 }
899
900 static void wm8988_unregister(struct wm8988_priv *wm8988)
901 {
902 wm8988_set_bias_level(&wm8988->codec, SND_SOC_BIAS_OFF);
903 snd_soc_unregister_dai(&wm8988_dai);
904 snd_soc_unregister_codec(&wm8988->codec);
905 kfree(wm8988);
906 wm8988_codec = NULL;
907 }
908
909 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
910 static int wm8988_i2c_probe(struct i2c_client *i2c,
911 const struct i2c_device_id *id)
912 {
913 struct wm8988_priv *wm8988;
914 struct snd_soc_codec *codec;
915
916 wm8988 = kzalloc(sizeof(struct wm8988_priv), GFP_KERNEL);
917 if (wm8988 == NULL)
918 return -ENOMEM;
919
920 codec = &wm8988->codec;
921
922 i2c_set_clientdata(i2c, wm8988);
923 codec->control_data = i2c;
924
925 codec->dev = &i2c->dev;
926
927 return wm8988_register(wm8988, SND_SOC_I2C);
928 }
929
930 static int wm8988_i2c_remove(struct i2c_client *client)
931 {
932 struct wm8988_priv *wm8988 = i2c_get_clientdata(client);
933 wm8988_unregister(wm8988);
934 return 0;
935 }
936
937 static const struct i2c_device_id wm8988_i2c_id[] = {
938 { "wm8988", 0 },
939 { }
940 };
941 MODULE_DEVICE_TABLE(i2c, wm8988_i2c_id);
942
943 static struct i2c_driver wm8988_i2c_driver = {
944 .driver = {
945 .name = "WM8988",
946 .owner = THIS_MODULE,
947 },
948 .probe = wm8988_i2c_probe,
949 .remove = wm8988_i2c_remove,
950 .id_table = wm8988_i2c_id,
951 };
952 #endif
953
954 #if defined(CONFIG_SPI_MASTER)
955 static int __devinit wm8988_spi_probe(struct spi_device *spi)
956 {
957 struct wm8988_priv *wm8988;
958 struct snd_soc_codec *codec;
959
960 wm8988 = kzalloc(sizeof(struct wm8988_priv), GFP_KERNEL);
961 if (wm8988 == NULL)
962 return -ENOMEM;
963
964 codec = &wm8988->codec;
965 codec->control_data = spi;
966 codec->dev = &spi->dev;
967
968 dev_set_drvdata(&spi->dev, wm8988);
969
970 return wm8988_register(wm8988, SND_SOC_SPI);
971 }
972
973 static int __devexit wm8988_spi_remove(struct spi_device *spi)
974 {
975 struct wm8988_priv *wm8988 = dev_get_drvdata(&spi->dev);
976
977 wm8988_unregister(wm8988);
978
979 return 0;
980 }
981
982 static struct spi_driver wm8988_spi_driver = {
983 .driver = {
984 .name = "wm8988",
985 .bus = &spi_bus_type,
986 .owner = THIS_MODULE,
987 },
988 .probe = wm8988_spi_probe,
989 .remove = __devexit_p(wm8988_spi_remove),
990 };
991 #endif
992
993 static int __init wm8988_modinit(void)
994 {
995 int ret;
996
997 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
998 ret = i2c_add_driver(&wm8988_i2c_driver);
999 if (ret != 0)
1000 pr_err("WM8988: Unable to register I2C driver: %d\n", ret);
1001 #endif
1002 #if defined(CONFIG_SPI_MASTER)
1003 ret = spi_register_driver(&wm8988_spi_driver);
1004 if (ret != 0)
1005 pr_err("WM8988: Unable to register SPI driver: %d\n", ret);
1006 #endif
1007 return ret;
1008 }
1009 module_init(wm8988_modinit);
1010
1011 static void __exit wm8988_exit(void)
1012 {
1013 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
1014 i2c_del_driver(&wm8988_i2c_driver);
1015 #endif
1016 #if defined(CONFIG_SPI_MASTER)
1017 spi_unregister_driver(&wm8988_spi_driver);
1018 #endif
1019 }
1020 module_exit(wm8988_exit);
1021
1022
1023 MODULE_DESCRIPTION("ASoC WM8988 driver");
1024 MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
1025 MODULE_LICENSE("GPL");
Tomato firmware and modifications.