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Committer: Michael Beasley <mike@snafu.setup>
[mikesnafu-overlay.git] / sound / soc / codecs / wm8750.c
blob77a857b997a2288e28ca2bc993a446057112dbff
1 /*
2 * wm8750.c -- WM8750 ALSA SoC audio driver
3 *
4 * Copyright 2005 Openedhand Ltd.
5 *
6 * Author: Richard Purdie <richard@openedhand.com>
7 *
8 * Based on WM8753.c
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as
12 * published by the Free Software Foundation.
13 */
14
15 #include <linux/module.h>
16 #include <linux/moduleparam.h>
17 #include <linux/init.h>
18 #include <linux/delay.h>
19 #include <linux/pm.h>
20 #include <linux/i2c.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/soc.h>
26 #include <sound/soc-dapm.h>
27 #include <sound/initval.h>
28
29 #include "wm8750.h"
30
31 #define AUDIO_NAME "WM8750"
32 #define WM8750_VERSION "0.12"
33
34 /*
35 * Debug
36 */
37
38 #define WM8750_DEBUG 0
39
40 #ifdef WM8750_DEBUG
41 #define dbg(format, arg...) \
42 printk(KERN_DEBUG AUDIO_NAME ": " format "\n" , ## arg)
43 #else
44 #define dbg(format, arg...) do {} while (0)
45 #endif
46 #define err(format, arg...) \
47 printk(KERN_ERR AUDIO_NAME ": " format "\n" , ## arg)
48 #define info(format, arg...) \
49 printk(KERN_INFO AUDIO_NAME ": " format "\n" , ## arg)
50 #define warn(format, arg...) \
51 printk(KERN_WARNING AUDIO_NAME ": " format "\n" , ## arg)
52
53 /* codec private data */
54 struct wm8750_priv {
55 unsigned int sysclk;
56 };
57
58 /*
59 * wm8750 register cache
60 * We can't read the WM8750 register space when we
61 * are using 2 wire for device control, so we cache them instead.
62 */
63 static const u16 wm8750_reg[] = {
64 0x0097, 0x0097, 0x0079, 0x0079, /* 0 */
65 0x0000, 0x0008, 0x0000, 0x000a, /* 4 */
66 0x0000, 0x0000, 0x00ff, 0x00ff, /* 8 */
67 0x000f, 0x000f, 0x0000, 0x0000, /* 12 */
68 0x0000, 0x007b, 0x0000, 0x0032, /* 16 */
69 0x0000, 0x00c3, 0x00c3, 0x00c0, /* 20 */
70 0x0000, 0x0000, 0x0000, 0x0000, /* 24 */
71 0x0000, 0x0000, 0x0000, 0x0000, /* 28 */
72 0x0000, 0x0000, 0x0050, 0x0050, /* 32 */
73 0x0050, 0x0050, 0x0050, 0x0050, /* 36 */
74 0x0079, 0x0079, 0x0079, /* 40 */
75 };
76
77 /*
78 * read wm8750 register cache
79 */
80 static inline unsigned int wm8750_read_reg_cache(struct snd_soc_codec *codec,
81 unsigned int reg)
82 {
83 u16 *cache = codec->reg_cache;
84 if (reg > WM8750_CACHE_REGNUM)
85 return -1;
86 return cache[reg];
87 }
88
89 /*
90 * write wm8750 register cache
91 */
92 static inline void wm8750_write_reg_cache(struct snd_soc_codec *codec,
93 unsigned int reg, unsigned int value)
94 {
95 u16 *cache = codec->reg_cache;
96 if (reg > WM8750_CACHE_REGNUM)
97 return;
98 cache[reg] = value;
99 }
100
101 static int wm8750_write(struct snd_soc_codec *codec, unsigned int reg,
102 unsigned int value)
103 {
104 u8 data[2];
105
106 /* data is
107 * D15..D9 WM8753 register offset
108 * D8...D0 register data
109 */
110 data[0] = (reg << 1) | ((value >> 8) & 0x0001);
111 data[1] = value & 0x00ff;
112
113 wm8750_write_reg_cache (codec, reg, value);
114 if (codec->hw_write(codec->control_data, data, 2) == 2)
115 return 0;
116 else
117 return -EIO;
118 }
119
120 #define wm8750_reset(c) wm8750_write(c, WM8750_RESET, 0)
121
122 /*
123 * WM8750 Controls
124 */
125 static const char *wm8750_bass[] = {"Linear Control", "Adaptive Boost"};
126 static const char *wm8750_bass_filter[] = { "130Hz @ 48kHz", "200Hz @ 48kHz" };
127 static const char *wm8750_treble[] = {"8kHz", "4kHz"};
128 static const char *wm8750_3d_lc[] = {"200Hz", "500Hz"};
129 static const char *wm8750_3d_uc[] = {"2.2kHz", "1.5kHz"};
130 static const char *wm8750_3d_func[] = {"Capture", "Playback"};
131 static const char *wm8750_alc_func[] = {"Off", "Right", "Left", "Stereo"};
132 static const char *wm8750_ng_type[] = {"Constant PGA Gain",
133 "Mute ADC Output"};
134 static const char *wm8750_line_mux[] = {"Line 1", "Line 2", "Line 3", "PGA",
135 "Differential"};
136 static const char *wm8750_pga_sel[] = {"Line 1", "Line 2", "Line 3",
137 "Differential"};
138 static const char *wm8750_out3[] = {"VREF", "ROUT1 + Vol", "MonoOut",
139 "ROUT1"};
140 static const char *wm8750_diff_sel[] = {"Line 1", "Line 2"};
141 static const char *wm8750_adcpol[] = {"Normal", "L Invert", "R Invert",
142 "L + R Invert"};
143 static const char *wm8750_deemph[] = {"None", "32Khz", "44.1Khz", "48Khz"};
144 static const char *wm8750_mono_mux[] = {"Stereo", "Mono (Left)",
145 "Mono (Right)", "Digital Mono"};
146
147 static const struct soc_enum wm8750_enum[] = {
148 SOC_ENUM_SINGLE(WM8750_BASS, 7, 2, wm8750_bass),
149 SOC_ENUM_SINGLE(WM8750_BASS, 6, 2, wm8750_bass_filter),
150 SOC_ENUM_SINGLE(WM8750_TREBLE, 6, 2, wm8750_treble),
151 SOC_ENUM_SINGLE(WM8750_3D, 5, 2, wm8750_3d_lc),
152 SOC_ENUM_SINGLE(WM8750_3D, 6, 2, wm8750_3d_uc),
153 SOC_ENUM_SINGLE(WM8750_3D, 7, 2, wm8750_3d_func),
154 SOC_ENUM_SINGLE(WM8750_ALC1, 7, 4, wm8750_alc_func),
155 SOC_ENUM_SINGLE(WM8750_NGATE, 1, 2, wm8750_ng_type),
156 SOC_ENUM_SINGLE(WM8750_LOUTM1, 0, 5, wm8750_line_mux),
157 SOC_ENUM_SINGLE(WM8750_ROUTM1, 0, 5, wm8750_line_mux),
158 SOC_ENUM_SINGLE(WM8750_LADCIN, 6, 4, wm8750_pga_sel), /* 10 */
159 SOC_ENUM_SINGLE(WM8750_RADCIN, 6, 4, wm8750_pga_sel),
160 SOC_ENUM_SINGLE(WM8750_ADCTL2, 7, 4, wm8750_out3),
161 SOC_ENUM_SINGLE(WM8750_ADCIN, 8, 2, wm8750_diff_sel),
162 SOC_ENUM_SINGLE(WM8750_ADCDAC, 5, 4, wm8750_adcpol),
163 SOC_ENUM_SINGLE(WM8750_ADCDAC, 1, 4, wm8750_deemph),
164 SOC_ENUM_SINGLE(WM8750_ADCIN, 6, 4, wm8750_mono_mux), /* 16 */
165
166 };
167
168 static const struct snd_kcontrol_new wm8750_snd_controls[] = {
169
170 SOC_DOUBLE_R("Capture Volume", WM8750_LINVOL, WM8750_RINVOL, 0, 63, 0),
171 SOC_DOUBLE_R("Capture ZC Switch", WM8750_LINVOL, WM8750_RINVOL, 6, 1, 0),
172 SOC_DOUBLE_R("Capture Switch", WM8750_LINVOL, WM8750_RINVOL, 7, 1, 1),
173
174 SOC_DOUBLE_R("Headphone Playback ZC Switch", WM8750_LOUT1V,
175 WM8750_ROUT1V, 7, 1, 0),
176 SOC_DOUBLE_R("Speaker Playback ZC Switch", WM8750_LOUT2V,
177 WM8750_ROUT2V, 7, 1, 0),
178
179 SOC_ENUM("Playback De-emphasis", wm8750_enum[15]),
180
181 SOC_ENUM("Capture Polarity", wm8750_enum[14]),
182 SOC_SINGLE("Playback 6dB Attenuate", WM8750_ADCDAC, 7, 1, 0),
183 SOC_SINGLE("Capture 6dB Attenuate", WM8750_ADCDAC, 8, 1, 0),
184
185 SOC_DOUBLE_R("PCM Volume", WM8750_LDAC, WM8750_RDAC, 0, 255, 0),
186
187 SOC_ENUM("Bass Boost", wm8750_enum[0]),
188 SOC_ENUM("Bass Filter", wm8750_enum[1]),
189 SOC_SINGLE("Bass Volume", WM8750_BASS, 0, 15, 1),
190
191 SOC_SINGLE("Treble Volume", WM8750_TREBLE, 0, 15, 1),
192 SOC_ENUM("Treble Cut-off", wm8750_enum[2]),
193
194 SOC_SINGLE("3D Switch", WM8750_3D, 0, 1, 0),
195 SOC_SINGLE("3D Volume", WM8750_3D, 1, 15, 0),
196 SOC_ENUM("3D Lower Cut-off", wm8750_enum[3]),
197 SOC_ENUM("3D Upper Cut-off", wm8750_enum[4]),
198 SOC_ENUM("3D Mode", wm8750_enum[5]),
199
200 SOC_SINGLE("ALC Capture Target Volume", WM8750_ALC1, 0, 7, 0),
201 SOC_SINGLE("ALC Capture Max Volume", WM8750_ALC1, 4, 7, 0),
202 SOC_ENUM("ALC Capture Function", wm8750_enum[6]),
203 SOC_SINGLE("ALC Capture ZC Switch", WM8750_ALC2, 7, 1, 0),
204 SOC_SINGLE("ALC Capture Hold Time", WM8750_ALC2, 0, 15, 0),
205 SOC_SINGLE("ALC Capture Decay Time", WM8750_ALC3, 4, 15, 0),
206 SOC_SINGLE("ALC Capture Attack Time", WM8750_ALC3, 0, 15, 0),
207 SOC_SINGLE("ALC Capture NG Threshold", WM8750_NGATE, 3, 31, 0),
208 SOC_ENUM("ALC Capture NG Type", wm8750_enum[4]),
209 SOC_SINGLE("ALC Capture NG Switch", WM8750_NGATE, 0, 1, 0),
210
211 SOC_SINGLE("Left ADC Capture Volume", WM8750_LADC, 0, 255, 0),
212 SOC_SINGLE("Right ADC Capture Volume", WM8750_RADC, 0, 255, 0),
213
214 SOC_SINGLE("ZC Timeout Switch", WM8750_ADCTL1, 0, 1, 0),
215 SOC_SINGLE("Playback Invert Switch", WM8750_ADCTL1, 1, 1, 0),
216
217 SOC_SINGLE("Right Speaker Playback Invert Switch", WM8750_ADCTL2, 4, 1, 0),
218
219 /* Unimplemented */
220 /* ADCDAC Bit 0 - ADCHPD */
221 /* ADCDAC Bit 4 - HPOR */
222 /* ADCTL1 Bit 2,3 - DATSEL */
223 /* ADCTL1 Bit 4,5 - DMONOMIX */
224 /* ADCTL1 Bit 6,7 - VSEL */
225 /* ADCTL2 Bit 2 - LRCM */
226 /* ADCTL2 Bit 3 - TRI */
227 /* ADCTL3 Bit 5 - HPFLREN */
228 /* ADCTL3 Bit 6 - VROI */
229 /* ADCTL3 Bit 7,8 - ADCLRM */
230 /* ADCIN Bit 4 - LDCM */
231 /* ADCIN Bit 5 - RDCM */
232
233 SOC_DOUBLE_R("Mic Boost", WM8750_LADCIN, WM8750_RADCIN, 4, 3, 0),
234
235 SOC_DOUBLE_R("Bypass Left Playback Volume", WM8750_LOUTM1,
236 WM8750_LOUTM2, 4, 7, 1),
237 SOC_DOUBLE_R("Bypass Right Playback Volume", WM8750_ROUTM1,
238 WM8750_ROUTM2, 4, 7, 1),
239 SOC_DOUBLE_R("Bypass Mono Playback Volume", WM8750_MOUTM1,
240 WM8750_MOUTM2, 4, 7, 1),
241
242 SOC_SINGLE("Mono Playback ZC Switch", WM8750_MOUTV, 7, 1, 0),
243
244 SOC_DOUBLE_R("Headphone Playback Volume", WM8750_LOUT1V, WM8750_ROUT1V,
245 0, 127, 0),
246 SOC_DOUBLE_R("Speaker Playback Volume", WM8750_LOUT2V, WM8750_ROUT2V,
247 0, 127, 0),
248
249 SOC_SINGLE("Mono Playback Volume", WM8750_MOUTV, 0, 127, 0),
250
251 };
252
253 /* add non dapm controls */
254 static int wm8750_add_controls(struct snd_soc_codec *codec)
255 {
256 int err, i;
257
258 for (i = 0; i < ARRAY_SIZE(wm8750_snd_controls); i++) {
259 err = snd_ctl_add(codec->card,
260 snd_soc_cnew(&wm8750_snd_controls[i],codec, NULL));
261 if (err < 0)
262 return err;
263 }
264 return 0;
265 }
266
267 /*
268 * DAPM Controls
269 */
270
271 /* Left Mixer */
272 static const struct snd_kcontrol_new wm8750_left_mixer_controls[] = {
273 SOC_DAPM_SINGLE("Playback Switch", WM8750_LOUTM1, 8, 1, 0),
274 SOC_DAPM_SINGLE("Left Bypass Switch", WM8750_LOUTM1, 7, 1, 0),
275 SOC_DAPM_SINGLE("Right Playback Switch", WM8750_LOUTM2, 8, 1, 0),
276 SOC_DAPM_SINGLE("Right Bypass Switch", WM8750_LOUTM2, 7, 1, 0),
277 };
278
279 /* Right Mixer */
280 static const struct snd_kcontrol_new wm8750_right_mixer_controls[] = {
281 SOC_DAPM_SINGLE("Left Playback Switch", WM8750_ROUTM1, 8, 1, 0),
282 SOC_DAPM_SINGLE("Left Bypass Switch", WM8750_ROUTM1, 7, 1, 0),
283 SOC_DAPM_SINGLE("Playback Switch", WM8750_ROUTM2, 8, 1, 0),
284 SOC_DAPM_SINGLE("Right Bypass Switch", WM8750_ROUTM2, 7, 1, 0),
285 };
286
287 /* Mono Mixer */
288 static const struct snd_kcontrol_new wm8750_mono_mixer_controls[] = {
289 SOC_DAPM_SINGLE("Left Playback Switch", WM8750_MOUTM1, 8, 1, 0),
290 SOC_DAPM_SINGLE("Left Bypass Switch", WM8750_MOUTM1, 7, 1, 0),
291 SOC_DAPM_SINGLE("Right Playback Switch", WM8750_MOUTM2, 8, 1, 0),
292 SOC_DAPM_SINGLE("Right Bypass Switch", WM8750_MOUTM2, 7, 1, 0),
293 };
294
295 /* Left Line Mux */
296 static const struct snd_kcontrol_new wm8750_left_line_controls =
297 SOC_DAPM_ENUM("Route", wm8750_enum[8]);
298
299 /* Right Line Mux */
300 static const struct snd_kcontrol_new wm8750_right_line_controls =
301 SOC_DAPM_ENUM("Route", wm8750_enum[9]);
302
303 /* Left PGA Mux */
304 static const struct snd_kcontrol_new wm8750_left_pga_controls =
305 SOC_DAPM_ENUM("Route", wm8750_enum[10]);
306
307 /* Right PGA Mux */
308 static const struct snd_kcontrol_new wm8750_right_pga_controls =
309 SOC_DAPM_ENUM("Route", wm8750_enum[11]);
310
311 /* Out 3 Mux */
312 static const struct snd_kcontrol_new wm8750_out3_controls =
313 SOC_DAPM_ENUM("Route", wm8750_enum[12]);
314
315 /* Differential Mux */
316 static const struct snd_kcontrol_new wm8750_diffmux_controls =
317 SOC_DAPM_ENUM("Route", wm8750_enum[13]);
318
319 /* Mono ADC Mux */
320 static const struct snd_kcontrol_new wm8750_monomux_controls =
321 SOC_DAPM_ENUM("Route", wm8750_enum[16]);
322
323 static const struct snd_soc_dapm_widget wm8750_dapm_widgets[] = {
324 SND_SOC_DAPM_MIXER("Left Mixer", SND_SOC_NOPM, 0, 0,
325 &wm8750_left_mixer_controls[0],
326 ARRAY_SIZE(wm8750_left_mixer_controls)),
327 SND_SOC_DAPM_MIXER("Right Mixer", SND_SOC_NOPM, 0, 0,
328 &wm8750_right_mixer_controls[0],
329 ARRAY_SIZE(wm8750_right_mixer_controls)),
330 SND_SOC_DAPM_MIXER("Mono Mixer", WM8750_PWR2, 2, 0,
331 &wm8750_mono_mixer_controls[0],
332 ARRAY_SIZE(wm8750_mono_mixer_controls)),
333
334 SND_SOC_DAPM_PGA("Right Out 2", WM8750_PWR2, 3, 0, NULL, 0),
335 SND_SOC_DAPM_PGA("Left Out 2", WM8750_PWR2, 4, 0, NULL, 0),
336 SND_SOC_DAPM_PGA("Right Out 1", WM8750_PWR2, 5, 0, NULL, 0),
337 SND_SOC_DAPM_PGA("Left Out 1", WM8750_PWR2, 6, 0, NULL, 0),
338 SND_SOC_DAPM_DAC("Right DAC", "Right Playback", WM8750_PWR2, 7, 0),
339 SND_SOC_DAPM_DAC("Left DAC", "Left Playback", WM8750_PWR2, 8, 0),
340
341 SND_SOC_DAPM_MICBIAS("Mic Bias", WM8750_PWR1, 1, 0),
342 SND_SOC_DAPM_ADC("Right ADC", "Right Capture", WM8750_PWR1, 2, 0),
343 SND_SOC_DAPM_ADC("Left ADC", "Left Capture", WM8750_PWR1, 3, 0),
344
345 SND_SOC_DAPM_MUX("Left PGA Mux", WM8750_PWR1, 5, 0,
346 &wm8750_left_pga_controls),
347 SND_SOC_DAPM_MUX("Right PGA Mux", WM8750_PWR1, 4, 0,
348 &wm8750_right_pga_controls),
349 SND_SOC_DAPM_MUX("Left Line Mux", SND_SOC_NOPM, 0, 0,
350 &wm8750_left_line_controls),
351 SND_SOC_DAPM_MUX("Right Line Mux", SND_SOC_NOPM, 0, 0,
352 &wm8750_right_line_controls),
353
354 SND_SOC_DAPM_MUX("Out3 Mux", SND_SOC_NOPM, 0, 0, &wm8750_out3_controls),
355 SND_SOC_DAPM_PGA("Out 3", WM8750_PWR2, 1, 0, NULL, 0),
356 SND_SOC_DAPM_PGA("Mono Out 1", WM8750_PWR2, 2, 0, NULL, 0),
357
358 SND_SOC_DAPM_MUX("Differential Mux", SND_SOC_NOPM, 0, 0,
359 &wm8750_diffmux_controls),
360 SND_SOC_DAPM_MUX("Left ADC Mux", SND_SOC_NOPM, 0, 0,
361 &wm8750_monomux_controls),
362 SND_SOC_DAPM_MUX("Right ADC Mux", SND_SOC_NOPM, 0, 0,
363 &wm8750_monomux_controls),
364
365 SND_SOC_DAPM_OUTPUT("LOUT1"),
366 SND_SOC_DAPM_OUTPUT("ROUT1"),
367 SND_SOC_DAPM_OUTPUT("LOUT2"),
368 SND_SOC_DAPM_OUTPUT("ROUT2"),
369 SND_SOC_DAPM_OUTPUT("MONO"),
370 SND_SOC_DAPM_OUTPUT("OUT3"),
371
372 SND_SOC_DAPM_INPUT("LINPUT1"),
373 SND_SOC_DAPM_INPUT("LINPUT2"),
374 SND_SOC_DAPM_INPUT("LINPUT3"),
375 SND_SOC_DAPM_INPUT("RINPUT1"),
376 SND_SOC_DAPM_INPUT("RINPUT2"),
377 SND_SOC_DAPM_INPUT("RINPUT3"),
378 };
379
380 static const char *audio_map[][3] = {
381 /* left mixer */
382 {"Left Mixer", "Playback Switch", "Left DAC"},
383 {"Left Mixer", "Left Bypass Switch", "Left Line Mux"},
384 {"Left Mixer", "Right Playback Switch", "Right DAC"},
385 {"Left Mixer", "Right Bypass Switch", "Right Line Mux"},
386
387 /* right mixer */
388 {"Right Mixer", "Left Playback Switch", "Left DAC"},
389 {"Right Mixer", "Left Bypass Switch", "Left Line Mux"},
390 {"Right Mixer", "Playback Switch", "Right DAC"},
391 {"Right Mixer", "Right Bypass Switch", "Right Line Mux"},
392
393 /* left out 1 */
394 {"Left Out 1", NULL, "Left Mixer"},
395 {"LOUT1", NULL, "Left Out 1"},
396
397 /* left out 2 */
398 {"Left Out 2", NULL, "Left Mixer"},
399 {"LOUT2", NULL, "Left Out 2"},
400
401 /* right out 1 */
402 {"Right Out 1", NULL, "Right Mixer"},
403 {"ROUT1", NULL, "Right Out 1"},
404
405 /* right out 2 */
406 {"Right Out 2", NULL, "Right Mixer"},
407 {"ROUT2", NULL, "Right Out 2"},
408
409 /* mono mixer */
410 {"Mono Mixer", "Left Playback Switch", "Left DAC"},
411 {"Mono Mixer", "Left Bypass Switch", "Left Line Mux"},
412 {"Mono Mixer", "Right Playback Switch", "Right DAC"},
413 {"Mono Mixer", "Right Bypass Switch", "Right Line Mux"},
414
415 /* mono out */
416 {"Mono Out 1", NULL, "Mono Mixer"},
417 {"MONO1", NULL, "Mono Out 1"},
418
419 /* out 3 */
420 {"Out3 Mux", "VREF", "VREF"},
421 {"Out3 Mux", "ROUT1 + Vol", "ROUT1"},
422 {"Out3 Mux", "ROUT1", "Right Mixer"},
423 {"Out3 Mux", "MonoOut", "MONO1"},
424 {"Out 3", NULL, "Out3 Mux"},
425 {"OUT3", NULL, "Out 3"},
426
427 /* Left Line Mux */
428 {"Left Line Mux", "Line 1", "LINPUT1"},
429 {"Left Line Mux", "Line 2", "LINPUT2"},
430 {"Left Line Mux", "Line 3", "LINPUT3"},
431 {"Left Line Mux", "PGA", "Left PGA Mux"},
432 {"Left Line Mux", "Differential", "Differential Mux"},
433
434 /* Right Line Mux */
435 {"Right Line Mux", "Line 1", "RINPUT1"},
436 {"Right Line Mux", "Line 2", "RINPUT2"},
437 {"Right Line Mux", "Line 3", "RINPUT3"},
438 {"Right Line Mux", "PGA", "Right PGA Mux"},
439 {"Right Line Mux", "Differential", "Differential Mux"},
440
441 /* Left PGA Mux */
442 {"Left PGA Mux", "Line 1", "LINPUT1"},
443 {"Left PGA Mux", "Line 2", "LINPUT2"},
444 {"Left PGA Mux", "Line 3", "LINPUT3"},
445 {"Left PGA Mux", "Differential", "Differential Mux"},
446
447 /* Right PGA Mux */
448 {"Right PGA Mux", "Line 1", "RINPUT1"},
449 {"Right PGA Mux", "Line 2", "RINPUT2"},
450 {"Right PGA Mux", "Line 3", "RINPUT3"},
451 {"Right PGA Mux", "Differential", "Differential Mux"},
452
453 /* Differential Mux */
454 {"Differential Mux", "Line 1", "LINPUT1"},
455 {"Differential Mux", "Line 1", "RINPUT1"},
456 {"Differential Mux", "Line 2", "LINPUT2"},
457 {"Differential Mux", "Line 2", "RINPUT2"},
458
459 /* Left ADC Mux */
460 {"Left ADC Mux", "Stereo", "Left PGA Mux"},
461 {"Left ADC Mux", "Mono (Left)", "Left PGA Mux"},
462 {"Left ADC Mux", "Digital Mono", "Left PGA Mux"},
463
464 /* Right ADC Mux */
465 {"Right ADC Mux", "Stereo", "Right PGA Mux"},
466 {"Right ADC Mux", "Mono (Right)", "Right PGA Mux"},
467 {"Right ADC Mux", "Digital Mono", "Right PGA Mux"},
468
469 /* ADC */
470 {"Left ADC", NULL, "Left ADC Mux"},
471 {"Right ADC", NULL, "Right ADC Mux"},
472
473 /* terminator */
474 {NULL, NULL, NULL},
475 };
476
477 static int wm8750_add_widgets(struct snd_soc_codec *codec)
478 {
479 int i;
480
481 for(i = 0; i < ARRAY_SIZE(wm8750_dapm_widgets); i++) {
482 snd_soc_dapm_new_control(codec, &wm8750_dapm_widgets[i]);
483 }
484
485 /* set up audio path audio_mapnects */
486 for(i = 0; audio_map[i][0] != NULL; i++) {
487 snd_soc_dapm_connect_input(codec, audio_map[i][0],
488 audio_map[i][1], audio_map[i][2]);
489 }
490
491 snd_soc_dapm_new_widgets(codec);
492 return 0;
493 }
494
495 struct _coeff_div {
496 u32 mclk;
497 u32 rate;
498 u16 fs;
499 u8 sr:5;
500 u8 usb:1;
501 };
502
503 /* codec hifi mclk clock divider coefficients */
504 static const struct _coeff_div coeff_div[] = {
505 /* 8k */
506 {12288000, 8000, 1536, 0x6, 0x0},
507 {11289600, 8000, 1408, 0x16, 0x0},
508 {18432000, 8000, 2304, 0x7, 0x0},
509 {16934400, 8000, 2112, 0x17, 0x0},
510 {12000000, 8000, 1500, 0x6, 0x1},
511
512 /* 11.025k */
513 {11289600, 11025, 1024, 0x18, 0x0},
514 {16934400, 11025, 1536, 0x19, 0x0},
515 {12000000, 11025, 1088, 0x19, 0x1},
516
517 /* 16k */
518 {12288000, 16000, 768, 0xa, 0x0},
519 {18432000, 16000, 1152, 0xb, 0x0},
520 {12000000, 16000, 750, 0xa, 0x1},
521
522 /* 22.05k */
523 {11289600, 22050, 512, 0x1a, 0x0},
524 {16934400, 22050, 768, 0x1b, 0x0},
525 {12000000, 22050, 544, 0x1b, 0x1},
526
527 /* 32k */
528 {12288000, 32000, 384, 0xc, 0x0},
529 {18432000, 32000, 576, 0xd, 0x0},
530 {12000000, 32000, 375, 0xa, 0x1},
531
532 /* 44.1k */
533 {11289600, 44100, 256, 0x10, 0x0},
534 {16934400, 44100, 384, 0x11, 0x0},
535 {12000000, 44100, 272, 0x11, 0x1},
536
537 /* 48k */
538 {12288000, 48000, 256, 0x0, 0x0},
539 {18432000, 48000, 384, 0x1, 0x0},
540 {12000000, 48000, 250, 0x0, 0x1},
541
542 /* 88.2k */
543 {11289600, 88200, 128, 0x1e, 0x0},
544 {16934400, 88200, 192, 0x1f, 0x0},
545 {12000000, 88200, 136, 0x1f, 0x1},
546
547 /* 96k */
548 {12288000, 96000, 128, 0xe, 0x0},
549 {18432000, 96000, 192, 0xf, 0x0},
550 {12000000, 96000, 125, 0xe, 0x1},
551 };
552
553 static inline int get_coeff(int mclk, int rate)
554 {
555 int i;
556
557 for (i = 0; i < ARRAY_SIZE(coeff_div); i++) {
558 if (coeff_div[i].rate == rate && coeff_div[i].mclk == mclk)
559 return i;
560 }
561
562 printk(KERN_ERR "wm8750: could not get coeff for mclk %d @ rate %d\n",
563 mclk, rate);
564 return -EINVAL;
565 }
566
567 static int wm8750_set_dai_sysclk(struct snd_soc_codec_dai *codec_dai,
568 int clk_id, unsigned int freq, int dir)
569 {
570 struct snd_soc_codec *codec = codec_dai->codec;
571 struct wm8750_priv *wm8750 = codec->private_data;
572
573 switch (freq) {
574 case 11289600:
575 case 12000000:
576 case 12288000:
577 case 16934400:
578 case 18432000:
579 wm8750->sysclk = freq;
580 return 0;
581 }
582 return -EINVAL;
583 }
584
585 static int wm8750_set_dai_fmt(struct snd_soc_codec_dai *codec_dai,
586 unsigned int fmt)
587 {
588 struct snd_soc_codec *codec = codec_dai->codec;
589 u16 iface = 0;
590
591 /* set master/slave audio interface */
592 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
593 case SND_SOC_DAIFMT_CBM_CFM:
594 iface = 0x0040;
595 break;
596 case SND_SOC_DAIFMT_CBS_CFS:
597 break;
598 default:
599 return -EINVAL;
600 }
601
602 /* interface format */
603 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
604 case SND_SOC_DAIFMT_I2S:
605 iface |= 0x0002;
606 break;
607 case SND_SOC_DAIFMT_RIGHT_J:
608 break;
609 case SND_SOC_DAIFMT_LEFT_J:
610 iface |= 0x0001;
611 break;
612 case SND_SOC_DAIFMT_DSP_A:
613 iface |= 0x0003;
614 break;
615 case SND_SOC_DAIFMT_DSP_B:
616 iface |= 0x0013;
617 break;
618 default:
619 return -EINVAL;
620 }
621
622 /* clock inversion */
623 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
624 case SND_SOC_DAIFMT_NB_NF:
625 break;
626 case SND_SOC_DAIFMT_IB_IF:
627 iface |= 0x0090;
628 break;
629 case SND_SOC_DAIFMT_IB_NF:
630 iface |= 0x0080;
631 break;
632 case SND_SOC_DAIFMT_NB_IF:
633 iface |= 0x0010;
634 break;
635 default:
636 return -EINVAL;
637 }
638
639 wm8750_write(codec, WM8750_IFACE, iface);
640 return 0;
641 }
642
643 static int wm8750_pcm_hw_params(struct snd_pcm_substream *substream,
644 struct snd_pcm_hw_params *params)
645 {
646 struct snd_soc_pcm_runtime *rtd = substream->private_data;
647 struct snd_soc_device *socdev = rtd->socdev;
648 struct snd_soc_codec *codec = socdev->codec;
649 struct wm8750_priv *wm8750 = codec->private_data;
650 u16 iface = wm8750_read_reg_cache(codec, WM8750_IFACE) & 0x1f3;
651 u16 srate = wm8750_read_reg_cache(codec, WM8750_SRATE) & 0x1c0;
652 int coeff = get_coeff(wm8750->sysclk, params_rate(params));
653
654 /* bit size */
655 switch (params_format(params)) {
656 case SNDRV_PCM_FORMAT_S16_LE:
657 break;
658 case SNDRV_PCM_FORMAT_S20_3LE:
659 iface |= 0x0004;
660 break;
661 case SNDRV_PCM_FORMAT_S24_LE:
662 iface |= 0x0008;
663 break;
664 case SNDRV_PCM_FORMAT_S32_LE:
665 iface |= 0x000c;
666 break;
667 }
668
669 /* set iface & srate */
670 wm8750_write(codec, WM8750_IFACE, iface);
671 if (coeff >= 0)
672 wm8750_write(codec, WM8750_SRATE, srate |
673 (coeff_div[coeff].sr << 1) | coeff_div[coeff].usb);
674
675 return 0;
676 }
677
678 static int wm8750_mute(struct snd_soc_codec_dai *dai, int mute)
679 {
680 struct snd_soc_codec *codec = dai->codec;
681 u16 mute_reg = wm8750_read_reg_cache(codec, WM8750_ADCDAC) & 0xfff7;
682
683 if (mute)
684 wm8750_write(codec, WM8750_ADCDAC, mute_reg | 0x8);
685 else
686 wm8750_write(codec, WM8750_ADCDAC, mute_reg);
687 return 0;
688 }
689
690 static int wm8750_dapm_event(struct snd_soc_codec *codec, int event)
691 {
692 u16 pwr_reg = wm8750_read_reg_cache(codec, WM8750_PWR1) & 0xfe3e;
693
694 switch (event) {
695 case SNDRV_CTL_POWER_D0: /* full On */
696 /* set vmid to 50k and unmute dac */
697 wm8750_write(codec, WM8750_PWR1, pwr_reg | 0x00c0);
698 break;
699 case SNDRV_CTL_POWER_D1: /* partial On */
700 case SNDRV_CTL_POWER_D2: /* partial On */
701 /* set vmid to 5k for quick power up */
702 wm8750_write(codec, WM8750_PWR1, pwr_reg | 0x01c1);
703 break;
704 case SNDRV_CTL_POWER_D3hot: /* Off, with power */
705 /* mute dac and set vmid to 500k, enable VREF */
706 wm8750_write(codec, WM8750_PWR1, pwr_reg | 0x0141);
707 break;
708 case SNDRV_CTL_POWER_D3cold: /* Off, without power */
709 wm8750_write(codec, WM8750_PWR1, 0x0001);
710 break;
711 }
712 codec->dapm_state = event;
713 return 0;
714 }
715
716 #define WM8750_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
717 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_44100 | \
718 SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000)
719
720 #define WM8750_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
721 SNDRV_PCM_FMTBIT_S24_LE)
722
723 struct snd_soc_codec_dai wm8750_dai = {
724 .name = "WM8750",
725 .playback = {
726 .stream_name = "Playback",
727 .channels_min = 1,
728 .channels_max = 2,
729 .rates = WM8750_RATES,
730 .formats = WM8750_FORMATS,},
731 .capture = {
732 .stream_name = "Capture",
733 .channels_min = 1,
734 .channels_max = 2,
735 .rates = WM8750_RATES,
736 .formats = WM8750_FORMATS,},
737 .ops = {
738 .hw_params = wm8750_pcm_hw_params,
739 },
740 .dai_ops = {
741 .digital_mute = wm8750_mute,
742 .set_fmt = wm8750_set_dai_fmt,
743 .set_sysclk = wm8750_set_dai_sysclk,
744 },
745 };
746 EXPORT_SYMBOL_GPL(wm8750_dai);
747
748 static void wm8750_work(struct work_struct *work)
749 {
750 struct snd_soc_codec *codec =
751 container_of(work, struct snd_soc_codec, delayed_work.work);
752 wm8750_dapm_event(codec, codec->dapm_state);
753 }
754
755 static int wm8750_suspend(struct platform_device *pdev, pm_message_t state)
756 {
757 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
758 struct snd_soc_codec *codec = socdev->codec;
759
760 wm8750_dapm_event(codec, SNDRV_CTL_POWER_D3cold);
761 return 0;
762 }
763
764 static int wm8750_resume(struct platform_device *pdev)
765 {
766 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
767 struct snd_soc_codec *codec = socdev->codec;
768 int i;
769 u8 data[2];
770 u16 *cache = codec->reg_cache;
771
772 /* Sync reg_cache with the hardware */
773 for (i = 0; i < ARRAY_SIZE(wm8750_reg); i++) {
774 if (i == WM8750_RESET)
775 continue;
776 data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001);
777 data[1] = cache[i] & 0x00ff;
778 codec->hw_write(codec->control_data, data, 2);
779 }
780
781 wm8750_dapm_event(codec, SNDRV_CTL_POWER_D3hot);
782
783 /* charge wm8750 caps */
784 if (codec->suspend_dapm_state == SNDRV_CTL_POWER_D0) {
785 wm8750_dapm_event(codec, SNDRV_CTL_POWER_D2);
786 codec->dapm_state = SNDRV_CTL_POWER_D0;
787 schedule_delayed_work(&codec->delayed_work, msecs_to_jiffies(1000));
788 }
789
790 return 0;
791 }
792
793 /*
794 * initialise the WM8750 driver
795 * register the mixer and dsp interfaces with the kernel
796 */
797 static int wm8750_init(struct snd_soc_device *socdev)
798 {
799 struct snd_soc_codec *codec = socdev->codec;
800 int reg, ret = 0;
801
802 codec->name = "WM8750";
803 codec->owner = THIS_MODULE;
804 codec->read = wm8750_read_reg_cache;
805 codec->write = wm8750_write;
806 codec->dapm_event = wm8750_dapm_event;
807 codec->dai = &wm8750_dai;
808 codec->num_dai = 1;
809 codec->reg_cache_size = sizeof(wm8750_reg);
810 codec->reg_cache = kmemdup(wm8750_reg, sizeof(wm8750_reg), GFP_KERNEL);
811 if (codec->reg_cache == NULL)
812 return -ENOMEM;
813
814 wm8750_reset(codec);
815
816 /* register pcms */
817 ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
818 if (ret < 0) {
819 printk(KERN_ERR "wm8750: failed to create pcms\n");
820 goto pcm_err;
821 }
822
823 /* charge output caps */
824 wm8750_dapm_event(codec, SNDRV_CTL_POWER_D2);
825 codec->dapm_state = SNDRV_CTL_POWER_D3hot;
826 schedule_delayed_work(&codec->delayed_work, msecs_to_jiffies(1000));
827
828 /* set the update bits */
829 reg = wm8750_read_reg_cache(codec, WM8750_LDAC);
830 wm8750_write(codec, WM8750_LDAC, reg | 0x0100);
831 reg = wm8750_read_reg_cache(codec, WM8750_RDAC);
832 wm8750_write(codec, WM8750_RDAC, reg | 0x0100);
833 reg = wm8750_read_reg_cache(codec, WM8750_LOUT1V);
834 wm8750_write(codec, WM8750_LOUT1V, reg | 0x0100);
835 reg = wm8750_read_reg_cache(codec, WM8750_ROUT1V);
836 wm8750_write(codec, WM8750_ROUT1V, reg | 0x0100);
837 reg = wm8750_read_reg_cache(codec, WM8750_LOUT2V);
838 wm8750_write(codec, WM8750_LOUT2V, reg | 0x0100);
839 reg = wm8750_read_reg_cache(codec, WM8750_ROUT2V);
840 wm8750_write(codec, WM8750_ROUT2V, reg | 0x0100);
841 reg = wm8750_read_reg_cache(codec, WM8750_LINVOL);
842 wm8750_write(codec, WM8750_LINVOL, reg | 0x0100);
843 reg = wm8750_read_reg_cache(codec, WM8750_RINVOL);
844 wm8750_write(codec, WM8750_RINVOL, reg | 0x0100);
845
846 wm8750_add_controls(codec);
847 wm8750_add_widgets(codec);
848 ret = snd_soc_register_card(socdev);
849 if (ret < 0) {
850 printk(KERN_ERR "wm8750: failed to register card\n");
851 goto card_err;
852 }
853 return ret;
854
855 card_err:
856 snd_soc_free_pcms(socdev);
857 snd_soc_dapm_free(socdev);
858 pcm_err:
859 kfree(codec->reg_cache);
860 return ret;
861 }
862
863 /* If the i2c layer weren't so broken, we could pass this kind of data
864 around */
865 static struct snd_soc_device *wm8750_socdev;
866
867 #if defined (CONFIG_I2C) || defined (CONFIG_I2C_MODULE)
868
869 /*
870 * WM8731 2 wire address is determined by GPIO5
871 * state during powerup.
872 * low = 0x1a
873 * high = 0x1b
874 */
875 static unsigned short normal_i2c[] = { 0, I2C_CLIENT_END };
876
877 /* Magic definition of all other variables and things */
878 I2C_CLIENT_INSMOD;
879
880 static struct i2c_driver wm8750_i2c_driver;
881 static struct i2c_client client_template;
882
883 static int wm8750_codec_probe(struct i2c_adapter *adap, int addr, int kind)
884 {
885 struct snd_soc_device *socdev = wm8750_socdev;
886 struct wm8750_setup_data *setup = socdev->codec_data;
887 struct snd_soc_codec *codec = socdev->codec;
888 struct i2c_client *i2c;
889 int ret;
890
891 if (addr != setup->i2c_address)
892 return -ENODEV;
893
894 client_template.adapter = adap;
895 client_template.addr = addr;
896
897 i2c = kmemdup(&client_template, sizeof(client_template), GFP_KERNEL);
898 if (i2c == NULL) {
899 kfree(codec);
900 return -ENOMEM;
901 }
902 i2c_set_clientdata(i2c, codec);
903 codec->control_data = i2c;
904
905 ret = i2c_attach_client(i2c);
906 if (ret < 0) {
907 err("failed to attach codec at addr %x\n", addr);
908 goto err;
909 }
910
911 ret = wm8750_init(socdev);
912 if (ret < 0) {
913 err("failed to initialise WM8750\n");
914 goto err;
915 }
916 return ret;
917
918 err:
919 kfree(codec);
920 kfree(i2c);
921 return ret;
922 }
923
924 static int wm8750_i2c_detach(struct i2c_client *client)
925 {
926 struct snd_soc_codec *codec = i2c_get_clientdata(client);
927 i2c_detach_client(client);
928 kfree(codec->reg_cache);
929 kfree(client);
930 return 0;
931 }
932
933 static int wm8750_i2c_attach(struct i2c_adapter *adap)
934 {
935 return i2c_probe(adap, &addr_data, wm8750_codec_probe);
936 }
937
938 /* corgi i2c codec control layer */
939 static struct i2c_driver wm8750_i2c_driver = {
940 .driver = {
941 .name = "WM8750 I2C Codec",
942 .owner = THIS_MODULE,
943 },
944 .id = I2C_DRIVERID_WM8750,
945 .attach_adapter = wm8750_i2c_attach,
946 .detach_client = wm8750_i2c_detach,
947 .command = NULL,
948 };
949
950 static struct i2c_client client_template = {
951 .name = "WM8750",
952 .driver = &wm8750_i2c_driver,
953 };
954 #endif
955
956 static int wm8750_probe(struct platform_device *pdev)
957 {
958 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
959 struct wm8750_setup_data *setup = socdev->codec_data;
960 struct snd_soc_codec *codec;
961 struct wm8750_priv *wm8750;
962 int ret = 0;
963
964 info("WM8750 Audio Codec %s", WM8750_VERSION);
965 codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
966 if (codec == NULL)
967 return -ENOMEM;
968
969 wm8750 = kzalloc(sizeof(struct wm8750_priv), GFP_KERNEL);
970 if (wm8750 == NULL) {
971 kfree(codec);
972 return -ENOMEM;
973 }
974
975 codec->private_data = wm8750;
976 socdev->codec = codec;
977 mutex_init(&codec->mutex);
978 INIT_LIST_HEAD(&codec->dapm_widgets);
979 INIT_LIST_HEAD(&codec->dapm_paths);
980 wm8750_socdev = socdev;
981 INIT_DELAYED_WORK(&codec->delayed_work, wm8750_work);
982
983 #if defined (CONFIG_I2C) || defined (CONFIG_I2C_MODULE)
984 if (setup->i2c_address) {
985 normal_i2c[0] = setup->i2c_address;
986 codec->hw_write = (hw_write_t)i2c_master_send;
987 ret = i2c_add_driver(&wm8750_i2c_driver);
988 if (ret != 0)
989 printk(KERN_ERR "can't add i2c driver");
990 }
991 #else
992 /* Add other interfaces here */
993 #endif
994
995 return ret;
996 }
997
998 /*
999 * This function forces any delayed work to be queued and run.
1000 */
1001 static int run_delayed_work(struct delayed_work *dwork)
1002 {
1003 int ret;
1004
1005 /* cancel any work waiting to be queued. */
1006 ret = cancel_delayed_work(dwork);
1007
1008 /* if there was any work waiting then we run it now and
1009 * wait for it's completion */
1010 if (ret) {
1011 schedule_delayed_work(dwork, 0);
1012 flush_scheduled_work();
1013 }
1014 return ret;
1015 }
1016
1017 /* power down chip */
1018 static int wm8750_remove(struct platform_device *pdev)
1019 {
1020 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
1021 struct snd_soc_codec *codec = socdev->codec;
1022
1023 if (codec->control_data)
1024 wm8750_dapm_event(codec, SNDRV_CTL_POWER_D3cold);
1025 run_delayed_work(&codec->delayed_work);
1026 snd_soc_free_pcms(socdev);
1027 snd_soc_dapm_free(socdev);
1028 #if defined (CONFIG_I2C) || defined (CONFIG_I2C_MODULE)
1029 i2c_del_driver(&wm8750_i2c_driver);
1030 #endif
1031 kfree(codec->private_data);
1032 kfree(codec);
1033
1034 return 0;
1035 }
1036
1037 struct snd_soc_codec_device soc_codec_dev_wm8750 = {
1038 .probe = wm8750_probe,
1039 .remove = wm8750_remove,
1040 .suspend = wm8750_suspend,
1041 .resume = wm8750_resume,
1042 };
1043
1044 EXPORT_SYMBOL_GPL(soc_codec_dev_wm8750);
1045
1046 MODULE_DESCRIPTION("ASoC WM8750 driver");
1047 MODULE_AUTHOR("Liam Girdwood");
1048 MODULE_LICENSE("GPL");
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