2 * wm8750.c -- WM8750 ALSA SoC audio driver
4 * Copyright 2005 Openedhand Ltd.
6 * Author: Richard Purdie <richard@openedhand.com>
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.
15 #include <linux/module.h>
16 #include <linux/moduleparam.h>
17 #include <linux/init.h>
18 #include <linux/delay.h>
20 #include <linux/i2c.h>
21 #include <linux/platform_device.h>
22 #include <linux/spi/spi.h>
23 #include <sound/core.h>
24 #include <sound/pcm.h>
25 #include <sound/pcm_params.h>
26 #include <sound/soc.h>
27 #include <sound/soc-dapm.h>
28 #include <sound/initval.h>
33 * wm8750 register cache
34 * We can't read the WM8750 register space when we
35 * are using 2 wire for device control, so we cache them instead.
37 static const u16 wm8750_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 */
51 /* codec private data */
54 struct snd_soc_codec codec;
55 u16 reg_cache[ARRAY_SIZE(wm8750_reg)];
58 #define wm8750_reset(c) snd_soc_write(c, WM8750_RESET, 0)
63 static const char *wm8750_bass[] = {"Linear Control", "Adaptive Boost"};
64 static const char *wm8750_bass_filter[] = { "130Hz @ 48kHz", "200Hz @ 48kHz" };
65 static const char *wm8750_treble[] = {"8kHz", "4kHz"};
66 static const char *wm8750_3d_lc[] = {"200Hz", "500Hz"};
67 static const char *wm8750_3d_uc[] = {"2.2kHz", "1.5kHz"};
68 static const char *wm8750_3d_func[] = {"Capture", "Playback"};
69 static const char *wm8750_alc_func[] = {"Off", "Right", "Left", "Stereo"};
70 static const char *wm8750_ng_type[] = {"Constant PGA Gain",
72 static const char *wm8750_line_mux[] = {"Line 1", "Line 2", "Line 3", "PGA",
74 static const char *wm8750_pga_sel[] = {"Line 1", "Line 2", "Line 3",
76 static const char *wm8750_out3[] = {"VREF", "ROUT1 + Vol", "MonoOut",
78 static const char *wm8750_diff_sel[] = {"Line 1", "Line 2"};
79 static const char *wm8750_adcpol[] = {"Normal", "L Invert", "R Invert",
81 static const char *wm8750_deemph[] = {"None", "32Khz", "44.1Khz", "48Khz"};
82 static const char *wm8750_mono_mux[] = {"Stereo", "Mono (Left)",
83 "Mono (Right)", "Digital Mono"};
85 static const struct soc_enum wm8750_enum[] = {
86 SOC_ENUM_SINGLE(WM8750_BASS, 7, 2, wm8750_bass),
87 SOC_ENUM_SINGLE(WM8750_BASS, 6, 2, wm8750_bass_filter),
88 SOC_ENUM_SINGLE(WM8750_TREBLE, 6, 2, wm8750_treble),
89 SOC_ENUM_SINGLE(WM8750_3D, 5, 2, wm8750_3d_lc),
90 SOC_ENUM_SINGLE(WM8750_3D, 6, 2, wm8750_3d_uc),
91 SOC_ENUM_SINGLE(WM8750_3D, 7, 2, wm8750_3d_func),
92 SOC_ENUM_SINGLE(WM8750_ALC1, 7, 4, wm8750_alc_func),
93 SOC_ENUM_SINGLE(WM8750_NGATE, 1, 2, wm8750_ng_type),
94 SOC_ENUM_SINGLE(WM8750_LOUTM1, 0, 5, wm8750_line_mux),
95 SOC_ENUM_SINGLE(WM8750_ROUTM1, 0, 5, wm8750_line_mux),
96 SOC_ENUM_SINGLE(WM8750_LADCIN, 6, 4, wm8750_pga_sel), /* 10 */
97 SOC_ENUM_SINGLE(WM8750_RADCIN, 6, 4, wm8750_pga_sel),
98 SOC_ENUM_SINGLE(WM8750_ADCTL2, 7, 4, wm8750_out3),
99 SOC_ENUM_SINGLE(WM8750_ADCIN, 8, 2, wm8750_diff_sel),
100 SOC_ENUM_SINGLE(WM8750_ADCDAC, 5, 4, wm8750_adcpol),
101 SOC_ENUM_SINGLE(WM8750_ADCDAC, 1, 4, wm8750_deemph),
102 SOC_ENUM_SINGLE(WM8750_ADCIN, 6, 4, wm8750_mono_mux), /* 16 */
106 static const struct snd_kcontrol_new wm8750_snd_controls[] = {
108 SOC_DOUBLE_R("Capture Volume", WM8750_LINVOL, WM8750_RINVOL, 0, 63, 0),
109 SOC_DOUBLE_R("Capture ZC Switch", WM8750_LINVOL, WM8750_RINVOL, 6, 1, 0),
110 SOC_DOUBLE_R("Capture Switch", WM8750_LINVOL, WM8750_RINVOL, 7, 1, 1),
112 SOC_DOUBLE_R("Headphone Playback ZC Switch", WM8750_LOUT1V,
113 WM8750_ROUT1V, 7, 1, 0),
114 SOC_DOUBLE_R("Speaker Playback ZC Switch", WM8750_LOUT2V,
115 WM8750_ROUT2V, 7, 1, 0),
117 SOC_ENUM("Playback De-emphasis", wm8750_enum[15]),
119 SOC_ENUM("Capture Polarity", wm8750_enum[14]),
120 SOC_SINGLE("Playback 6dB Attenuate", WM8750_ADCDAC, 7, 1, 0),
121 SOC_SINGLE("Capture 6dB Attenuate", WM8750_ADCDAC, 8, 1, 0),
123 SOC_DOUBLE_R("PCM Volume", WM8750_LDAC, WM8750_RDAC, 0, 255, 0),
125 SOC_ENUM("Bass Boost", wm8750_enum[0]),
126 SOC_ENUM("Bass Filter", wm8750_enum[1]),
127 SOC_SINGLE("Bass Volume", WM8750_BASS, 0, 15, 1),
129 SOC_SINGLE("Treble Volume", WM8750_TREBLE, 0, 15, 1),
130 SOC_ENUM("Treble Cut-off", wm8750_enum[2]),
132 SOC_SINGLE("3D Switch", WM8750_3D, 0, 1, 0),
133 SOC_SINGLE("3D Volume", WM8750_3D, 1, 15, 0),
134 SOC_ENUM("3D Lower Cut-off", wm8750_enum[3]),
135 SOC_ENUM("3D Upper Cut-off", wm8750_enum[4]),
136 SOC_ENUM("3D Mode", wm8750_enum[5]),
138 SOC_SINGLE("ALC Capture Target Volume", WM8750_ALC1, 0, 7, 0),
139 SOC_SINGLE("ALC Capture Max Volume", WM8750_ALC1, 4, 7, 0),
140 SOC_ENUM("ALC Capture Function", wm8750_enum[6]),
141 SOC_SINGLE("ALC Capture ZC Switch", WM8750_ALC2, 7, 1, 0),
142 SOC_SINGLE("ALC Capture Hold Time", WM8750_ALC2, 0, 15, 0),
143 SOC_SINGLE("ALC Capture Decay Time", WM8750_ALC3, 4, 15, 0),
144 SOC_SINGLE("ALC Capture Attack Time", WM8750_ALC3, 0, 15, 0),
145 SOC_SINGLE("ALC Capture NG Threshold", WM8750_NGATE, 3, 31, 0),
146 SOC_ENUM("ALC Capture NG Type", wm8750_enum[4]),
147 SOC_SINGLE("ALC Capture NG Switch", WM8750_NGATE, 0, 1, 0),
149 SOC_SINGLE("Left ADC Capture Volume", WM8750_LADC, 0, 255, 0),
150 SOC_SINGLE("Right ADC Capture Volume", WM8750_RADC, 0, 255, 0),
152 SOC_SINGLE("ZC Timeout Switch", WM8750_ADCTL1, 0, 1, 0),
153 SOC_SINGLE("Playback Invert Switch", WM8750_ADCTL1, 1, 1, 0),
155 SOC_SINGLE("Right Speaker Playback Invert Switch", WM8750_ADCTL2, 4, 1, 0),
158 /* ADCDAC Bit 0 - ADCHPD */
159 /* ADCDAC Bit 4 - HPOR */
160 /* ADCTL1 Bit 2,3 - DATSEL */
161 /* ADCTL1 Bit 4,5 - DMONOMIX */
162 /* ADCTL1 Bit 6,7 - VSEL */
163 /* ADCTL2 Bit 2 - LRCM */
164 /* ADCTL2 Bit 3 - TRI */
165 /* ADCTL3 Bit 5 - HPFLREN */
166 /* ADCTL3 Bit 6 - VROI */
167 /* ADCTL3 Bit 7,8 - ADCLRM */
168 /* ADCIN Bit 4 - LDCM */
169 /* ADCIN Bit 5 - RDCM */
171 SOC_DOUBLE_R("Mic Boost", WM8750_LADCIN, WM8750_RADCIN, 4, 3, 0),
173 SOC_DOUBLE_R("Bypass Left Playback Volume", WM8750_LOUTM1,
174 WM8750_LOUTM2, 4, 7, 1),
175 SOC_DOUBLE_R("Bypass Right Playback Volume", WM8750_ROUTM1,
176 WM8750_ROUTM2, 4, 7, 1),
177 SOC_DOUBLE_R("Bypass Mono Playback Volume", WM8750_MOUTM1,
178 WM8750_MOUTM2, 4, 7, 1),
180 SOC_SINGLE("Mono Playback ZC Switch", WM8750_MOUTV, 7, 1, 0),
182 SOC_DOUBLE_R("Headphone Playback Volume", WM8750_LOUT1V, WM8750_ROUT1V,
184 SOC_DOUBLE_R("Speaker Playback Volume", WM8750_LOUT2V, WM8750_ROUT2V,
187 SOC_SINGLE("Mono Playback Volume", WM8750_MOUTV, 0, 127, 0),
196 static const struct snd_kcontrol_new wm8750_left_mixer_controls[] = {
197 SOC_DAPM_SINGLE("Playback Switch", WM8750_LOUTM1, 8, 1, 0),
198 SOC_DAPM_SINGLE("Left Bypass Switch", WM8750_LOUTM1, 7, 1, 0),
199 SOC_DAPM_SINGLE("Right Playback Switch", WM8750_LOUTM2, 8, 1, 0),
200 SOC_DAPM_SINGLE("Right Bypass Switch", WM8750_LOUTM2, 7, 1, 0),
204 static const struct snd_kcontrol_new wm8750_right_mixer_controls[] = {
205 SOC_DAPM_SINGLE("Left Playback Switch", WM8750_ROUTM1, 8, 1, 0),
206 SOC_DAPM_SINGLE("Left Bypass Switch", WM8750_ROUTM1, 7, 1, 0),
207 SOC_DAPM_SINGLE("Playback Switch", WM8750_ROUTM2, 8, 1, 0),
208 SOC_DAPM_SINGLE("Right Bypass Switch", WM8750_ROUTM2, 7, 1, 0),
212 static const struct snd_kcontrol_new wm8750_mono_mixer_controls[] = {
213 SOC_DAPM_SINGLE("Left Playback Switch", WM8750_MOUTM1, 8, 1, 0),
214 SOC_DAPM_SINGLE("Left Bypass Switch", WM8750_MOUTM1, 7, 1, 0),
215 SOC_DAPM_SINGLE("Right Playback Switch", WM8750_MOUTM2, 8, 1, 0),
216 SOC_DAPM_SINGLE("Right Bypass Switch", WM8750_MOUTM2, 7, 1, 0),
220 static const struct snd_kcontrol_new wm8750_left_line_controls =
221 SOC_DAPM_ENUM("Route", wm8750_enum[8]);
224 static const struct snd_kcontrol_new wm8750_right_line_controls =
225 SOC_DAPM_ENUM("Route", wm8750_enum[9]);
228 static const struct snd_kcontrol_new wm8750_left_pga_controls =
229 SOC_DAPM_ENUM("Route", wm8750_enum[10]);
232 static const struct snd_kcontrol_new wm8750_right_pga_controls =
233 SOC_DAPM_ENUM("Route", wm8750_enum[11]);
236 static const struct snd_kcontrol_new wm8750_out3_controls =
237 SOC_DAPM_ENUM("Route", wm8750_enum[12]);
239 /* Differential Mux */
240 static const struct snd_kcontrol_new wm8750_diffmux_controls =
241 SOC_DAPM_ENUM("Route", wm8750_enum[13]);
244 static const struct snd_kcontrol_new wm8750_monomux_controls =
245 SOC_DAPM_ENUM("Route", wm8750_enum[16]);
247 static const struct snd_soc_dapm_widget wm8750_dapm_widgets[] = {
248 SND_SOC_DAPM_MIXER("Left Mixer", SND_SOC_NOPM, 0, 0,
249 &wm8750_left_mixer_controls[0],
250 ARRAY_SIZE(wm8750_left_mixer_controls)),
251 SND_SOC_DAPM_MIXER("Right Mixer", SND_SOC_NOPM, 0, 0,
252 &wm8750_right_mixer_controls[0],
253 ARRAY_SIZE(wm8750_right_mixer_controls)),
254 SND_SOC_DAPM_MIXER("Mono Mixer", WM8750_PWR2, 2, 0,
255 &wm8750_mono_mixer_controls[0],
256 ARRAY_SIZE(wm8750_mono_mixer_controls)),
258 SND_SOC_DAPM_PGA("Right Out 2", WM8750_PWR2, 3, 0, NULL, 0),
259 SND_SOC_DAPM_PGA("Left Out 2", WM8750_PWR2, 4, 0, NULL, 0),
260 SND_SOC_DAPM_PGA("Right Out 1", WM8750_PWR2, 5, 0, NULL, 0),
261 SND_SOC_DAPM_PGA("Left Out 1", WM8750_PWR2, 6, 0, NULL, 0),
262 SND_SOC_DAPM_DAC("Right DAC", "Right Playback", WM8750_PWR2, 7, 0),
263 SND_SOC_DAPM_DAC("Left DAC", "Left Playback", WM8750_PWR2, 8, 0),
265 SND_SOC_DAPM_MICBIAS("Mic Bias", WM8750_PWR1, 1, 0),
266 SND_SOC_DAPM_ADC("Right ADC", "Right Capture", WM8750_PWR1, 2, 0),
267 SND_SOC_DAPM_ADC("Left ADC", "Left Capture", WM8750_PWR1, 3, 0),
269 SND_SOC_DAPM_MUX("Left PGA Mux", WM8750_PWR1, 5, 0,
270 &wm8750_left_pga_controls),
271 SND_SOC_DAPM_MUX("Right PGA Mux", WM8750_PWR1, 4, 0,
272 &wm8750_right_pga_controls),
273 SND_SOC_DAPM_MUX("Left Line Mux", SND_SOC_NOPM, 0, 0,
274 &wm8750_left_line_controls),
275 SND_SOC_DAPM_MUX("Right Line Mux", SND_SOC_NOPM, 0, 0,
276 &wm8750_right_line_controls),
278 SND_SOC_DAPM_MUX("Out3 Mux", SND_SOC_NOPM, 0, 0, &wm8750_out3_controls),
279 SND_SOC_DAPM_PGA("Out 3", WM8750_PWR2, 1, 0, NULL, 0),
280 SND_SOC_DAPM_PGA("Mono Out 1", WM8750_PWR2, 2, 0, NULL, 0),
282 SND_SOC_DAPM_MUX("Differential Mux", SND_SOC_NOPM, 0, 0,
283 &wm8750_diffmux_controls),
284 SND_SOC_DAPM_MUX("Left ADC Mux", SND_SOC_NOPM, 0, 0,
285 &wm8750_monomux_controls),
286 SND_SOC_DAPM_MUX("Right ADC Mux", SND_SOC_NOPM, 0, 0,
287 &wm8750_monomux_controls),
289 SND_SOC_DAPM_OUTPUT("LOUT1"),
290 SND_SOC_DAPM_OUTPUT("ROUT1"),
291 SND_SOC_DAPM_OUTPUT("LOUT2"),
292 SND_SOC_DAPM_OUTPUT("ROUT2"),
293 SND_SOC_DAPM_OUTPUT("MONO1"),
294 SND_SOC_DAPM_OUTPUT("OUT3"),
295 SND_SOC_DAPM_OUTPUT("VREF"),
297 SND_SOC_DAPM_INPUT("LINPUT1"),
298 SND_SOC_DAPM_INPUT("LINPUT2"),
299 SND_SOC_DAPM_INPUT("LINPUT3"),
300 SND_SOC_DAPM_INPUT("RINPUT1"),
301 SND_SOC_DAPM_INPUT("RINPUT2"),
302 SND_SOC_DAPM_INPUT("RINPUT3"),
305 static const struct snd_soc_dapm_route audio_map[] = {
307 {"Left Mixer", "Playback Switch", "Left DAC"},
308 {"Left Mixer", "Left Bypass Switch", "Left Line Mux"},
309 {"Left Mixer", "Right Playback Switch", "Right DAC"},
310 {"Left Mixer", "Right Bypass Switch", "Right Line Mux"},
313 {"Right Mixer", "Left Playback Switch", "Left DAC"},
314 {"Right Mixer", "Left Bypass Switch", "Left Line Mux"},
315 {"Right Mixer", "Playback Switch", "Right DAC"},
316 {"Right Mixer", "Right Bypass Switch", "Right Line Mux"},
319 {"Left Out 1", NULL, "Left Mixer"},
320 {"LOUT1", NULL, "Left Out 1"},
323 {"Left Out 2", NULL, "Left Mixer"},
324 {"LOUT2", NULL, "Left Out 2"},
327 {"Right Out 1", NULL, "Right Mixer"},
328 {"ROUT1", NULL, "Right Out 1"},
331 {"Right Out 2", NULL, "Right Mixer"},
332 {"ROUT2", NULL, "Right Out 2"},
335 {"Mono Mixer", "Left Playback Switch", "Left DAC"},
336 {"Mono Mixer", "Left Bypass Switch", "Left Line Mux"},
337 {"Mono Mixer", "Right Playback Switch", "Right DAC"},
338 {"Mono Mixer", "Right Bypass Switch", "Right Line Mux"},
341 {"Mono Out 1", NULL, "Mono Mixer"},
342 {"MONO1", NULL, "Mono Out 1"},
345 {"Out3 Mux", "VREF", "VREF"},
346 {"Out3 Mux", "ROUT1 + Vol", "ROUT1"},
347 {"Out3 Mux", "ROUT1", "Right Mixer"},
348 {"Out3 Mux", "MonoOut", "MONO1"},
349 {"Out 3", NULL, "Out3 Mux"},
350 {"OUT3", NULL, "Out 3"},
353 {"Left Line Mux", "Line 1", "LINPUT1"},
354 {"Left Line Mux", "Line 2", "LINPUT2"},
355 {"Left Line Mux", "Line 3", "LINPUT3"},
356 {"Left Line Mux", "PGA", "Left PGA Mux"},
357 {"Left Line Mux", "Differential", "Differential Mux"},
360 {"Right Line Mux", "Line 1", "RINPUT1"},
361 {"Right Line Mux", "Line 2", "RINPUT2"},
362 {"Right Line Mux", "Line 3", "RINPUT3"},
363 {"Right Line Mux", "PGA", "Right PGA Mux"},
364 {"Right Line Mux", "Differential", "Differential Mux"},
367 {"Left PGA Mux", "Line 1", "LINPUT1"},
368 {"Left PGA Mux", "Line 2", "LINPUT2"},
369 {"Left PGA Mux", "Line 3", "LINPUT3"},
370 {"Left PGA Mux", "Differential", "Differential Mux"},
373 {"Right PGA Mux", "Line 1", "RINPUT1"},
374 {"Right PGA Mux", "Line 2", "RINPUT2"},
375 {"Right PGA Mux", "Line 3", "RINPUT3"},
376 {"Right PGA Mux", "Differential", "Differential Mux"},
378 /* Differential Mux */
379 {"Differential Mux", "Line 1", "LINPUT1"},
380 {"Differential Mux", "Line 1", "RINPUT1"},
381 {"Differential Mux", "Line 2", "LINPUT2"},
382 {"Differential Mux", "Line 2", "RINPUT2"},
385 {"Left ADC Mux", "Stereo", "Left PGA Mux"},
386 {"Left ADC Mux", "Mono (Left)", "Left PGA Mux"},
387 {"Left ADC Mux", "Digital Mono", "Left PGA Mux"},
390 {"Right ADC Mux", "Stereo", "Right PGA Mux"},
391 {"Right ADC Mux", "Mono (Right)", "Right PGA Mux"},
392 {"Right ADC Mux", "Digital Mono", "Right PGA Mux"},
395 {"Left ADC", NULL, "Left ADC Mux"},
396 {"Right ADC", NULL, "Right ADC Mux"},
399 static int wm8750_add_widgets(struct snd_soc_codec *codec)
401 snd_soc_dapm_new_controls(codec, wm8750_dapm_widgets,
402 ARRAY_SIZE(wm8750_dapm_widgets));
404 snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
417 /* codec hifi mclk clock divider coefficients */
418 static const struct _coeff_div coeff_div[] = {
420 {12288000, 8000, 1536, 0x6, 0x0},
421 {11289600, 8000, 1408, 0x16, 0x0},
422 {18432000, 8000, 2304, 0x7, 0x0},
423 {16934400, 8000, 2112, 0x17, 0x0},
424 {12000000, 8000, 1500, 0x6, 0x1},
427 {11289600, 11025, 1024, 0x18, 0x0},
428 {16934400, 11025, 1536, 0x19, 0x0},
429 {12000000, 11025, 1088, 0x19, 0x1},
432 {12288000, 16000, 768, 0xa, 0x0},
433 {18432000, 16000, 1152, 0xb, 0x0},
434 {12000000, 16000, 750, 0xa, 0x1},
437 {11289600, 22050, 512, 0x1a, 0x0},
438 {16934400, 22050, 768, 0x1b, 0x0},
439 {12000000, 22050, 544, 0x1b, 0x1},
442 {12288000, 32000, 384, 0xc, 0x0},
443 {18432000, 32000, 576, 0xd, 0x0},
444 {12000000, 32000, 375, 0xa, 0x1},
447 {11289600, 44100, 256, 0x10, 0x0},
448 {16934400, 44100, 384, 0x11, 0x0},
449 {12000000, 44100, 272, 0x11, 0x1},
452 {12288000, 48000, 256, 0x0, 0x0},
453 {18432000, 48000, 384, 0x1, 0x0},
454 {12000000, 48000, 250, 0x0, 0x1},
457 {11289600, 88200, 128, 0x1e, 0x0},
458 {16934400, 88200, 192, 0x1f, 0x0},
459 {12000000, 88200, 136, 0x1f, 0x1},
462 {12288000, 96000, 128, 0xe, 0x0},
463 {18432000, 96000, 192, 0xf, 0x0},
464 {12000000, 96000, 125, 0xe, 0x1},
467 static inline int get_coeff(int mclk, int rate)
471 for (i = 0; i < ARRAY_SIZE(coeff_div); i++) {
472 if (coeff_div[i].rate == rate && coeff_div[i].mclk == mclk)
476 printk(KERN_ERR "wm8750: could not get coeff for mclk %d @ rate %d\n",
481 static int wm8750_set_dai_sysclk(struct snd_soc_dai *codec_dai,
482 int clk_id, unsigned int freq, int dir)
484 struct snd_soc_codec *codec = codec_dai->codec;
485 struct wm8750_priv *wm8750 = codec->private_data;
493 wm8750->sysclk = freq;
499 static int wm8750_set_dai_fmt(struct snd_soc_dai *codec_dai,
502 struct snd_soc_codec *codec = codec_dai->codec;
505 /* set master/slave audio interface */
506 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
507 case SND_SOC_DAIFMT_CBM_CFM:
510 case SND_SOC_DAIFMT_CBS_CFS:
516 /* interface format */
517 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
518 case SND_SOC_DAIFMT_I2S:
521 case SND_SOC_DAIFMT_RIGHT_J:
523 case SND_SOC_DAIFMT_LEFT_J:
526 case SND_SOC_DAIFMT_DSP_A:
529 case SND_SOC_DAIFMT_DSP_B:
536 /* clock inversion */
537 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
538 case SND_SOC_DAIFMT_NB_NF:
540 case SND_SOC_DAIFMT_IB_IF:
543 case SND_SOC_DAIFMT_IB_NF:
546 case SND_SOC_DAIFMT_NB_IF:
553 snd_soc_write(codec, WM8750_IFACE, iface);
557 static int wm8750_pcm_hw_params(struct snd_pcm_substream *substream,
558 struct snd_pcm_hw_params *params,
559 struct snd_soc_dai *dai)
561 struct snd_soc_pcm_runtime *rtd = substream->private_data;
562 struct snd_soc_device *socdev = rtd->socdev;
563 struct snd_soc_codec *codec = socdev->card->codec;
564 struct wm8750_priv *wm8750 = codec->private_data;
565 u16 iface = snd_soc_read(codec, WM8750_IFACE) & 0x1f3;
566 u16 srate = snd_soc_read(codec, WM8750_SRATE) & 0x1c0;
567 int coeff = get_coeff(wm8750->sysclk, params_rate(params));
570 switch (params_format(params)) {
571 case SNDRV_PCM_FORMAT_S16_LE:
573 case SNDRV_PCM_FORMAT_S20_3LE:
576 case SNDRV_PCM_FORMAT_S24_LE:
579 case SNDRV_PCM_FORMAT_S32_LE:
584 /* set iface & srate */
585 snd_soc_write(codec, WM8750_IFACE, iface);
587 snd_soc_write(codec, WM8750_SRATE, srate |
588 (coeff_div[coeff].sr << 1) | coeff_div[coeff].usb);
593 static int wm8750_mute(struct snd_soc_dai *dai, int mute)
595 struct snd_soc_codec *codec = dai->codec;
596 u16 mute_reg = snd_soc_read(codec, WM8750_ADCDAC) & 0xfff7;
599 snd_soc_write(codec, WM8750_ADCDAC, mute_reg | 0x8);
601 snd_soc_write(codec, WM8750_ADCDAC, mute_reg);
605 static int wm8750_set_bias_level(struct snd_soc_codec *codec,
606 enum snd_soc_bias_level level)
608 u16 pwr_reg = snd_soc_read(codec, WM8750_PWR1) & 0xfe3e;
611 case SND_SOC_BIAS_ON:
612 /* set vmid to 50k and unmute dac */
613 snd_soc_write(codec, WM8750_PWR1, pwr_reg | 0x00c0);
615 case SND_SOC_BIAS_PREPARE:
617 case SND_SOC_BIAS_STANDBY:
618 if (codec->bias_level == SND_SOC_BIAS_OFF) {
620 snd_soc_write(codec, WM8750_PWR1, pwr_reg | 0x01c1);
626 /* mute dac and set vmid to 500k, enable VREF */
627 snd_soc_write(codec, WM8750_PWR1, pwr_reg | 0x0141);
629 case SND_SOC_BIAS_OFF:
630 snd_soc_write(codec, WM8750_PWR1, 0x0001);
633 codec->bias_level = level;
637 #define WM8750_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
638 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_44100 | \
639 SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000)
641 #define WM8750_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
642 SNDRV_PCM_FMTBIT_S24_LE)
644 static struct snd_soc_dai_ops wm8750_dai_ops = {
645 .hw_params = wm8750_pcm_hw_params,
646 .digital_mute = wm8750_mute,
647 .set_fmt = wm8750_set_dai_fmt,
648 .set_sysclk = wm8750_set_dai_sysclk,
651 struct snd_soc_dai wm8750_dai = {
654 .stream_name = "Playback",
657 .rates = WM8750_RATES,
658 .formats = WM8750_FORMATS,},
660 .stream_name = "Capture",
663 .rates = WM8750_RATES,
664 .formats = WM8750_FORMATS,},
665 .ops = &wm8750_dai_ops,
667 EXPORT_SYMBOL_GPL(wm8750_dai);
669 static int wm8750_suspend(struct platform_device *pdev, pm_message_t state)
671 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
672 struct snd_soc_codec *codec = socdev->card->codec;
674 wm8750_set_bias_level(codec, SND_SOC_BIAS_OFF);
678 static int wm8750_resume(struct platform_device *pdev)
680 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
681 struct snd_soc_codec *codec = socdev->card->codec;
684 u16 *cache = codec->reg_cache;
686 /* Sync reg_cache with the hardware */
687 for (i = 0; i < ARRAY_SIZE(wm8750_reg); i++) {
688 if (i == WM8750_RESET)
690 data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001);
691 data[1] = cache[i] & 0x00ff;
692 codec->hw_write(codec->control_data, data, 2);
695 wm8750_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
700 static struct snd_soc_codec *wm8750_codec;
702 static int wm8750_probe(struct platform_device *pdev)
704 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
705 struct snd_soc_codec *codec;
709 dev_err(&pdev->dev, "WM8750 codec not yet registered\n");
713 socdev->card->codec = wm8750_codec;
714 codec = wm8750_codec;
717 ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
719 printk(KERN_ERR "wm8750: failed to create pcms\n");
723 snd_soc_add_controls(codec, wm8750_snd_controls,
724 ARRAY_SIZE(wm8750_snd_controls));
725 wm8750_add_widgets(codec);
733 /* power down chip */
734 static int wm8750_remove(struct platform_device *pdev)
736 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
738 snd_soc_free_pcms(socdev);
739 snd_soc_dapm_free(socdev);
744 struct snd_soc_codec_device soc_codec_dev_wm8750 = {
745 .probe = wm8750_probe,
746 .remove = wm8750_remove,
747 .suspend = wm8750_suspend,
748 .resume = wm8750_resume,
750 EXPORT_SYMBOL_GPL(soc_codec_dev_wm8750);
753 * initialise the WM8750 driver
754 * register the mixer and dsp interfaces with the kernel
756 static int wm8750_register(struct wm8750_priv *wm8750,
757 enum snd_soc_control_type control)
759 struct snd_soc_codec *codec = &wm8750->codec;
763 dev_err(codec->dev, "Multiple WM8750 devices not supported\n");
768 mutex_init(&codec->mutex);
769 INIT_LIST_HEAD(&codec->dapm_widgets);
770 INIT_LIST_HEAD(&codec->dapm_paths);
772 codec->name = "WM8750";
773 codec->owner = THIS_MODULE;
774 codec->bias_level = SND_SOC_BIAS_STANDBY;
775 codec->set_bias_level = wm8750_set_bias_level;
776 codec->dai = &wm8750_dai;
778 codec->private_data = wm8750;
779 codec->reg_cache_size = ARRAY_SIZE(wm8750->reg_cache) + 1;
780 codec->reg_cache = &wm8750->reg_cache;
781 codec->private_data = wm8750;
783 memcpy(codec->reg_cache, wm8750_reg, sizeof(wm8750->reg_cache));
785 ret = snd_soc_codec_set_cache_io(codec, 7, 9, control);
787 printk(KERN_ERR "wm8750: failed to set cache I/O: %d\n", ret);
791 ret = wm8750_reset(codec);
793 printk(KERN_ERR "wm8750: failed to reset: %d\n", ret);
797 /* charge output caps */
798 wm8750_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
800 /* set the update bits */
801 reg = snd_soc_read(codec, WM8750_LDAC);
802 snd_soc_write(codec, WM8750_LDAC, reg | 0x0100);
803 reg = snd_soc_read(codec, WM8750_RDAC);
804 snd_soc_write(codec, WM8750_RDAC, reg | 0x0100);
805 reg = snd_soc_read(codec, WM8750_LOUT1V);
806 snd_soc_write(codec, WM8750_LOUT1V, reg | 0x0100);
807 reg = snd_soc_read(codec, WM8750_ROUT1V);
808 snd_soc_write(codec, WM8750_ROUT1V, reg | 0x0100);
809 reg = snd_soc_read(codec, WM8750_LOUT2V);
810 snd_soc_write(codec, WM8750_LOUT2V, reg | 0x0100);
811 reg = snd_soc_read(codec, WM8750_ROUT2V);
812 snd_soc_write(codec, WM8750_ROUT2V, reg | 0x0100);
813 reg = snd_soc_read(codec, WM8750_LINVOL);
814 snd_soc_write(codec, WM8750_LINVOL, reg | 0x0100);
815 reg = snd_soc_read(codec, WM8750_RINVOL);
816 snd_soc_write(codec, WM8750_RINVOL, reg | 0x0100);
818 wm8750_codec = codec;
820 ret = snd_soc_register_codec(codec);
822 dev_err(codec->dev, "Failed to register codec: %d\n", ret);
826 ret = snd_soc_register_dais(&wm8750_dai, 1);
828 dev_err(codec->dev, "Failed to register DAIs: %d\n", ret);
835 snd_soc_unregister_codec(codec);
841 static void wm8750_unregister(struct wm8750_priv *wm8750)
843 wm8750_set_bias_level(&wm8750->codec, SND_SOC_BIAS_OFF);
844 snd_soc_unregister_dais(&wm8750_dai, 1);
845 snd_soc_unregister_codec(&wm8750->codec);
850 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
853 * WM8750 2 wire address is determined by GPIO5
854 * state during powerup.
859 static int wm8750_i2c_probe(struct i2c_client *i2c,
860 const struct i2c_device_id *id)
862 struct snd_soc_codec *codec;
863 struct wm8750_priv *wm8750;
865 wm8750 = kzalloc(sizeof(struct wm8750_priv), GFP_KERNEL);
869 codec = &wm8750->codec;
870 codec->control_data = i2c;
871 i2c_set_clientdata(i2c, wm8750);
873 codec->dev = &i2c->dev;
875 return wm8750_register(wm8750, SND_SOC_I2C);
878 static int wm8750_i2c_remove(struct i2c_client *client)
880 struct wm8750_priv *wm8750 = i2c_get_clientdata(client);
881 wm8750_unregister(wm8750);
885 static const struct i2c_device_id wm8750_i2c_id[] = {
889 MODULE_DEVICE_TABLE(i2c, wm8750_i2c_id);
891 static struct i2c_driver wm8750_i2c_driver = {
893 .name = "WM8750 I2C Codec",
894 .owner = THIS_MODULE,
896 .probe = wm8750_i2c_probe,
897 .remove = wm8750_i2c_remove,
898 .id_table = wm8750_i2c_id,
902 #if defined(CONFIG_SPI_MASTER)
903 static int __devinit wm8750_spi_probe(struct spi_device *spi)
905 struct snd_soc_codec *codec;
906 struct wm8750_priv *wm8750;
908 wm8750 = kzalloc(sizeof(struct wm8750_priv), GFP_KERNEL);
912 codec = &wm8750->codec;
913 codec->control_data = spi;
914 codec->dev = &spi->dev;
916 dev_set_drvdata(&spi->dev, wm8750);
918 return wm8750_register(wm8750, SND_SOC_SPI);
921 static int __devexit wm8750_spi_remove(struct spi_device *spi)
923 struct wm8750_priv *wm8750 = dev_get_drvdata(&spi->dev);
924 wm8750_unregister(wm8750);
928 static struct spi_driver wm8750_spi_driver = {
931 .bus = &spi_bus_type,
932 .owner = THIS_MODULE,
934 .probe = wm8750_spi_probe,
935 .remove = __devexit_p(wm8750_spi_remove),
939 static int __init wm8750_modinit(void)
942 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
943 ret = i2c_add_driver(&wm8750_i2c_driver);
945 pr_err("Failed to register WM8750 I2C driver: %d\n", ret);
947 #if defined(CONFIG_SPI_MASTER)
948 ret = spi_register_driver(&wm8750_spi_driver);
950 pr_err("Failed to register WM8750 SPI driver: %d\n", ret);
954 module_init(wm8750_modinit);
956 static void __exit wm8750_exit(void)
958 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
959 i2c_del_driver(&wm8750_i2c_driver);
961 #if defined(CONFIG_SPI_MASTER)
962 spi_unregister_driver(&wm8750_spi_driver);
965 module_exit(wm8750_exit);
967 MODULE_DESCRIPTION("ASoC WM8750 driver");
968 MODULE_AUTHOR("Liam Girdwood");
969 MODULE_LICENSE("GPL");