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>
32 #define WM8750_VERSION "0.12"
34 /* codec private data */
40 * wm8750 register cache
41 * We can't read the WM8750 register space when we
42 * are using 2 wire for device control, so we cache them instead.
44 static const u16 wm8750_reg
[] = {
45 0x0097, 0x0097, 0x0079, 0x0079, /* 0 */
46 0x0000, 0x0008, 0x0000, 0x000a, /* 4 */
47 0x0000, 0x0000, 0x00ff, 0x00ff, /* 8 */
48 0x000f, 0x000f, 0x0000, 0x0000, /* 12 */
49 0x0000, 0x007b, 0x0000, 0x0032, /* 16 */
50 0x0000, 0x00c3, 0x00c3, 0x00c0, /* 20 */
51 0x0000, 0x0000, 0x0000, 0x0000, /* 24 */
52 0x0000, 0x0000, 0x0000, 0x0000, /* 28 */
53 0x0000, 0x0000, 0x0050, 0x0050, /* 32 */
54 0x0050, 0x0050, 0x0050, 0x0050, /* 36 */
55 0x0079, 0x0079, 0x0079, /* 40 */
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
));
406 snd_soc_dapm_new_widgets(codec
);
418 /* codec hifi mclk clock divider coefficients */
419 static const struct _coeff_div coeff_div
[] = {
421 {12288000, 8000, 1536, 0x6, 0x0},
422 {11289600, 8000, 1408, 0x16, 0x0},
423 {18432000, 8000, 2304, 0x7, 0x0},
424 {16934400, 8000, 2112, 0x17, 0x0},
425 {12000000, 8000, 1500, 0x6, 0x1},
428 {11289600, 11025, 1024, 0x18, 0x0},
429 {16934400, 11025, 1536, 0x19, 0x0},
430 {12000000, 11025, 1088, 0x19, 0x1},
433 {12288000, 16000, 768, 0xa, 0x0},
434 {18432000, 16000, 1152, 0xb, 0x0},
435 {12000000, 16000, 750, 0xa, 0x1},
438 {11289600, 22050, 512, 0x1a, 0x0},
439 {16934400, 22050, 768, 0x1b, 0x0},
440 {12000000, 22050, 544, 0x1b, 0x1},
443 {12288000, 32000, 384, 0xc, 0x0},
444 {18432000, 32000, 576, 0xd, 0x0},
445 {12000000, 32000, 375, 0xa, 0x1},
448 {11289600, 44100, 256, 0x10, 0x0},
449 {16934400, 44100, 384, 0x11, 0x0},
450 {12000000, 44100, 272, 0x11, 0x1},
453 {12288000, 48000, 256, 0x0, 0x0},
454 {18432000, 48000, 384, 0x1, 0x0},
455 {12000000, 48000, 250, 0x0, 0x1},
458 {11289600, 88200, 128, 0x1e, 0x0},
459 {16934400, 88200, 192, 0x1f, 0x0},
460 {12000000, 88200, 136, 0x1f, 0x1},
463 {12288000, 96000, 128, 0xe, 0x0},
464 {18432000, 96000, 192, 0xf, 0x0},
465 {12000000, 96000, 125, 0xe, 0x1},
468 static inline int get_coeff(int mclk
, int rate
)
472 for (i
= 0; i
< ARRAY_SIZE(coeff_div
); i
++) {
473 if (coeff_div
[i
].rate
== rate
&& coeff_div
[i
].mclk
== mclk
)
477 printk(KERN_ERR
"wm8750: could not get coeff for mclk %d @ rate %d\n",
482 static int wm8750_set_dai_sysclk(struct snd_soc_dai
*codec_dai
,
483 int clk_id
, unsigned int freq
, int dir
)
485 struct snd_soc_codec
*codec
= codec_dai
->codec
;
486 struct wm8750_priv
*wm8750
= codec
->private_data
;
494 wm8750
->sysclk
= freq
;
500 static int wm8750_set_dai_fmt(struct snd_soc_dai
*codec_dai
,
503 struct snd_soc_codec
*codec
= codec_dai
->codec
;
506 /* set master/slave audio interface */
507 switch (fmt
& SND_SOC_DAIFMT_MASTER_MASK
) {
508 case SND_SOC_DAIFMT_CBM_CFM
:
511 case SND_SOC_DAIFMT_CBS_CFS
:
517 /* interface format */
518 switch (fmt
& SND_SOC_DAIFMT_FORMAT_MASK
) {
519 case SND_SOC_DAIFMT_I2S
:
522 case SND_SOC_DAIFMT_RIGHT_J
:
524 case SND_SOC_DAIFMT_LEFT_J
:
527 case SND_SOC_DAIFMT_DSP_A
:
530 case SND_SOC_DAIFMT_DSP_B
:
537 /* clock inversion */
538 switch (fmt
& SND_SOC_DAIFMT_INV_MASK
) {
539 case SND_SOC_DAIFMT_NB_NF
:
541 case SND_SOC_DAIFMT_IB_IF
:
544 case SND_SOC_DAIFMT_IB_NF
:
547 case SND_SOC_DAIFMT_NB_IF
:
554 snd_soc_write(codec
, WM8750_IFACE
, iface
);
558 static int wm8750_pcm_hw_params(struct snd_pcm_substream
*substream
,
559 struct snd_pcm_hw_params
*params
,
560 struct snd_soc_dai
*dai
)
562 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
563 struct snd_soc_device
*socdev
= rtd
->socdev
;
564 struct snd_soc_codec
*codec
= socdev
->card
->codec
;
565 struct wm8750_priv
*wm8750
= codec
->private_data
;
566 u16 iface
= snd_soc_read(codec
, WM8750_IFACE
) & 0x1f3;
567 u16 srate
= snd_soc_read(codec
, WM8750_SRATE
) & 0x1c0;
568 int coeff
= get_coeff(wm8750
->sysclk
, params_rate(params
));
571 switch (params_format(params
)) {
572 case SNDRV_PCM_FORMAT_S16_LE
:
574 case SNDRV_PCM_FORMAT_S20_3LE
:
577 case SNDRV_PCM_FORMAT_S24_LE
:
580 case SNDRV_PCM_FORMAT_S32_LE
:
585 /* set iface & srate */
586 snd_soc_write(codec
, WM8750_IFACE
, iface
);
588 snd_soc_write(codec
, WM8750_SRATE
, srate
|
589 (coeff_div
[coeff
].sr
<< 1) | coeff_div
[coeff
].usb
);
594 static int wm8750_mute(struct snd_soc_dai
*dai
, int mute
)
596 struct snd_soc_codec
*codec
= dai
->codec
;
597 u16 mute_reg
= snd_soc_read(codec
, WM8750_ADCDAC
) & 0xfff7;
600 snd_soc_write(codec
, WM8750_ADCDAC
, mute_reg
| 0x8);
602 snd_soc_write(codec
, WM8750_ADCDAC
, mute_reg
);
606 static int wm8750_set_bias_level(struct snd_soc_codec
*codec
,
607 enum snd_soc_bias_level level
)
609 u16 pwr_reg
= snd_soc_read(codec
, WM8750_PWR1
) & 0xfe3e;
612 case SND_SOC_BIAS_ON
:
613 /* set vmid to 50k and unmute dac */
614 snd_soc_write(codec
, WM8750_PWR1
, pwr_reg
| 0x00c0);
616 case SND_SOC_BIAS_PREPARE
:
617 /* set vmid to 5k for quick power up */
618 snd_soc_write(codec
, WM8750_PWR1
, pwr_reg
| 0x01c1);
620 case SND_SOC_BIAS_STANDBY
:
621 /* mute dac and set vmid to 500k, enable VREF */
622 snd_soc_write(codec
, WM8750_PWR1
, pwr_reg
| 0x0141);
624 case SND_SOC_BIAS_OFF
:
625 snd_soc_write(codec
, WM8750_PWR1
, 0x0001);
628 codec
->bias_level
= level
;
632 #define WM8750_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
633 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_44100 | \
634 SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000)
636 #define WM8750_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
637 SNDRV_PCM_FMTBIT_S24_LE)
639 static struct snd_soc_dai_ops wm8750_dai_ops
= {
640 .hw_params
= wm8750_pcm_hw_params
,
641 .digital_mute
= wm8750_mute
,
642 .set_fmt
= wm8750_set_dai_fmt
,
643 .set_sysclk
= wm8750_set_dai_sysclk
,
646 struct snd_soc_dai wm8750_dai
= {
649 .stream_name
= "Playback",
652 .rates
= WM8750_RATES
,
653 .formats
= WM8750_FORMATS
,},
655 .stream_name
= "Capture",
658 .rates
= WM8750_RATES
,
659 .formats
= WM8750_FORMATS
,},
660 .ops
= &wm8750_dai_ops
,
662 EXPORT_SYMBOL_GPL(wm8750_dai
);
664 static void wm8750_work(struct work_struct
*work
)
666 struct snd_soc_codec
*codec
=
667 container_of(work
, struct snd_soc_codec
, delayed_work
.work
);
668 wm8750_set_bias_level(codec
, codec
->bias_level
);
671 static int wm8750_suspend(struct platform_device
*pdev
, pm_message_t state
)
673 struct snd_soc_device
*socdev
= platform_get_drvdata(pdev
);
674 struct snd_soc_codec
*codec
= socdev
->card
->codec
;
676 wm8750_set_bias_level(codec
, SND_SOC_BIAS_OFF
);
680 static int wm8750_resume(struct platform_device
*pdev
)
682 struct snd_soc_device
*socdev
= platform_get_drvdata(pdev
);
683 struct snd_soc_codec
*codec
= socdev
->card
->codec
;
686 u16
*cache
= codec
->reg_cache
;
688 /* Sync reg_cache with the hardware */
689 for (i
= 0; i
< ARRAY_SIZE(wm8750_reg
); i
++) {
690 if (i
== WM8750_RESET
)
692 data
[0] = (i
<< 1) | ((cache
[i
] >> 8) & 0x0001);
693 data
[1] = cache
[i
] & 0x00ff;
694 codec
->hw_write(codec
->control_data
, data
, 2);
697 wm8750_set_bias_level(codec
, SND_SOC_BIAS_STANDBY
);
699 /* charge wm8750 caps */
700 if (codec
->suspend_bias_level
== SND_SOC_BIAS_ON
) {
701 wm8750_set_bias_level(codec
, SND_SOC_BIAS_PREPARE
);
702 codec
->bias_level
= SND_SOC_BIAS_ON
;
703 schedule_delayed_work(&codec
->delayed_work
,
704 msecs_to_jiffies(1000));
711 * initialise the WM8750 driver
712 * register the mixer and dsp interfaces with the kernel
714 static int wm8750_init(struct snd_soc_device
*socdev
,
715 enum snd_soc_control_type control
)
717 struct snd_soc_codec
*codec
= socdev
->card
->codec
;
720 codec
->name
= "WM8750";
721 codec
->owner
= THIS_MODULE
;
722 codec
->set_bias_level
= wm8750_set_bias_level
;
723 codec
->dai
= &wm8750_dai
;
725 codec
->reg_cache_size
= ARRAY_SIZE(wm8750_reg
);
726 codec
->reg_cache
= kmemdup(wm8750_reg
, sizeof(wm8750_reg
), GFP_KERNEL
);
727 if (codec
->reg_cache
== NULL
)
730 ret
= snd_soc_codec_set_cache_io(codec
, 7, 9, control
);
732 printk(KERN_ERR
"wm8750: failed to set cache I/O: %d\n", ret
);
736 ret
= wm8750_reset(codec
);
738 printk(KERN_ERR
"wm8750: failed to reset: %d\n", ret
);
743 ret
= snd_soc_new_pcms(socdev
, SNDRV_DEFAULT_IDX1
, SNDRV_DEFAULT_STR1
);
745 printk(KERN_ERR
"wm8750: failed to create pcms\n");
749 /* charge output caps */
750 wm8750_set_bias_level(codec
, SND_SOC_BIAS_PREPARE
);
751 codec
->bias_level
= SND_SOC_BIAS_STANDBY
;
752 schedule_delayed_work(&codec
->delayed_work
, msecs_to_jiffies(1000));
754 /* set the update bits */
755 reg
= snd_soc_read(codec
, WM8750_LDAC
);
756 snd_soc_write(codec
, WM8750_LDAC
, reg
| 0x0100);
757 reg
= snd_soc_read(codec
, WM8750_RDAC
);
758 snd_soc_write(codec
, WM8750_RDAC
, reg
| 0x0100);
759 reg
= snd_soc_read(codec
, WM8750_LOUT1V
);
760 snd_soc_write(codec
, WM8750_LOUT1V
, reg
| 0x0100);
761 reg
= snd_soc_read(codec
, WM8750_ROUT1V
);
762 snd_soc_write(codec
, WM8750_ROUT1V
, reg
| 0x0100);
763 reg
= snd_soc_read(codec
, WM8750_LOUT2V
);
764 snd_soc_write(codec
, WM8750_LOUT2V
, reg
| 0x0100);
765 reg
= snd_soc_read(codec
, WM8750_ROUT2V
);
766 snd_soc_write(codec
, WM8750_ROUT2V
, reg
| 0x0100);
767 reg
= snd_soc_read(codec
, WM8750_LINVOL
);
768 snd_soc_write(codec
, WM8750_LINVOL
, reg
| 0x0100);
769 reg
= snd_soc_read(codec
, WM8750_RINVOL
);
770 snd_soc_write(codec
, WM8750_RINVOL
, reg
| 0x0100);
772 snd_soc_add_controls(codec
, wm8750_snd_controls
,
773 ARRAY_SIZE(wm8750_snd_controls
));
774 wm8750_add_widgets(codec
);
775 ret
= snd_soc_init_card(socdev
);
777 printk(KERN_ERR
"wm8750: failed to register card\n");
783 snd_soc_free_pcms(socdev
);
784 snd_soc_dapm_free(socdev
);
786 kfree(codec
->reg_cache
);
790 /* If the i2c layer weren't so broken, we could pass this kind of data
792 static struct snd_soc_device
*wm8750_socdev
;
794 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
797 * WM8750 2 wire address is determined by GPIO5
798 * state during powerup.
803 static int wm8750_i2c_probe(struct i2c_client
*i2c
,
804 const struct i2c_device_id
*id
)
806 struct snd_soc_device
*socdev
= wm8750_socdev
;
807 struct snd_soc_codec
*codec
= socdev
->card
->codec
;
810 i2c_set_clientdata(i2c
, codec
);
811 codec
->control_data
= i2c
;
813 ret
= wm8750_init(socdev
, SND_SOC_I2C
);
815 pr_err("failed to initialise WM8750\n");
820 static int wm8750_i2c_remove(struct i2c_client
*client
)
822 struct snd_soc_codec
*codec
= i2c_get_clientdata(client
);
823 kfree(codec
->reg_cache
);
827 static const struct i2c_device_id wm8750_i2c_id
[] = {
831 MODULE_DEVICE_TABLE(i2c
, wm8750_i2c_id
);
833 static struct i2c_driver wm8750_i2c_driver
= {
835 .name
= "WM8750 I2C Codec",
836 .owner
= THIS_MODULE
,
838 .probe
= wm8750_i2c_probe
,
839 .remove
= wm8750_i2c_remove
,
840 .id_table
= wm8750_i2c_id
,
843 static int wm8750_add_i2c_device(struct platform_device
*pdev
,
844 const struct wm8750_setup_data
*setup
)
846 struct i2c_board_info info
;
847 struct i2c_adapter
*adapter
;
848 struct i2c_client
*client
;
851 ret
= i2c_add_driver(&wm8750_i2c_driver
);
853 dev_err(&pdev
->dev
, "can't add i2c driver\n");
857 memset(&info
, 0, sizeof(struct i2c_board_info
));
858 info
.addr
= setup
->i2c_address
;
859 strlcpy(info
.type
, "wm8750", I2C_NAME_SIZE
);
861 adapter
= i2c_get_adapter(setup
->i2c_bus
);
863 dev_err(&pdev
->dev
, "can't get i2c adapter %d\n",
868 client
= i2c_new_device(adapter
, &info
);
869 i2c_put_adapter(adapter
);
871 dev_err(&pdev
->dev
, "can't add i2c device at 0x%x\n",
872 (unsigned int)info
.addr
);
879 i2c_del_driver(&wm8750_i2c_driver
);
884 #if defined(CONFIG_SPI_MASTER)
885 static int __devinit
wm8750_spi_probe(struct spi_device
*spi
)
887 struct snd_soc_device
*socdev
= wm8750_socdev
;
888 struct snd_soc_codec
*codec
= socdev
->card
->codec
;
891 codec
->control_data
= spi
;
893 ret
= wm8750_init(socdev
, SND_SOC_SPI
);
895 dev_err(&spi
->dev
, "failed to initialise WM8750\n");
900 static int __devexit
wm8750_spi_remove(struct spi_device
*spi
)
905 static struct spi_driver wm8750_spi_driver
= {
908 .bus
= &spi_bus_type
,
909 .owner
= THIS_MODULE
,
911 .probe
= wm8750_spi_probe
,
912 .remove
= __devexit_p(wm8750_spi_remove
),
916 static int wm8750_probe(struct platform_device
*pdev
)
918 struct snd_soc_device
*socdev
= platform_get_drvdata(pdev
);
919 struct wm8750_setup_data
*setup
= socdev
->codec_data
;
920 struct snd_soc_codec
*codec
;
921 struct wm8750_priv
*wm8750
;
924 pr_info("WM8750 Audio Codec %s", WM8750_VERSION
);
925 codec
= kzalloc(sizeof(struct snd_soc_codec
), GFP_KERNEL
);
929 wm8750
= kzalloc(sizeof(struct wm8750_priv
), GFP_KERNEL
);
930 if (wm8750
== NULL
) {
935 codec
->private_data
= wm8750
;
936 socdev
->card
->codec
= codec
;
937 mutex_init(&codec
->mutex
);
938 INIT_LIST_HEAD(&codec
->dapm_widgets
);
939 INIT_LIST_HEAD(&codec
->dapm_paths
);
940 wm8750_socdev
= socdev
;
941 INIT_DELAYED_WORK(&codec
->delayed_work
, wm8750_work
);
945 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
946 if (setup
->i2c_address
) {
947 ret
= wm8750_add_i2c_device(pdev
, setup
);
950 #if defined(CONFIG_SPI_MASTER)
952 ret
= spi_register_driver(&wm8750_spi_driver
);
954 printk(KERN_ERR
"can't add spi driver");
959 kfree(codec
->private_data
);
966 * This function forces any delayed work to be queued and run.
968 static int run_delayed_work(struct delayed_work
*dwork
)
972 /* cancel any work waiting to be queued. */
973 ret
= cancel_delayed_work(dwork
);
975 /* if there was any work waiting then we run it now and
976 * wait for it's completion */
978 schedule_delayed_work(dwork
, 0);
979 flush_scheduled_work();
984 /* power down chip */
985 static int wm8750_remove(struct platform_device
*pdev
)
987 struct snd_soc_device
*socdev
= platform_get_drvdata(pdev
);
988 struct snd_soc_codec
*codec
= socdev
->card
->codec
;
990 if (codec
->control_data
)
991 wm8750_set_bias_level(codec
, SND_SOC_BIAS_OFF
);
992 run_delayed_work(&codec
->delayed_work
);
993 snd_soc_free_pcms(socdev
);
994 snd_soc_dapm_free(socdev
);
995 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
996 i2c_unregister_device(codec
->control_data
);
997 i2c_del_driver(&wm8750_i2c_driver
);
999 #if defined(CONFIG_SPI_MASTER)
1000 spi_unregister_driver(&wm8750_spi_driver
);
1002 kfree(codec
->private_data
);
1008 struct snd_soc_codec_device soc_codec_dev_wm8750
= {
1009 .probe
= wm8750_probe
,
1010 .remove
= wm8750_remove
,
1011 .suspend
= wm8750_suspend
,
1012 .resume
= wm8750_resume
,
1014 EXPORT_SYMBOL_GPL(soc_codec_dev_wm8750
);
1016 static int __init
wm8750_modinit(void)
1018 return snd_soc_register_dai(&wm8750_dai
);
1020 module_init(wm8750_modinit
);
1022 static void __exit
wm8750_exit(void)
1024 snd_soc_unregister_dai(&wm8750_dai
);
1026 module_exit(wm8750_exit
);
1028 MODULE_DESCRIPTION("ASoC WM8750 driver");
1029 MODULE_AUTHOR("Liam Girdwood");
1030 MODULE_LICENSE("GPL");