2 * wm8753.c -- WM8753 ALSA Soc Audio driver
4 * Copyright 2003 Wolfson Microelectronics PLC.
5 * Author: Liam Girdwood <lrg@slimlogic.co.uk>
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License as published by the
9 * Free Software Foundation; either version 2 of the License, or (at your
10 * option) any later version.
13 * The WM8753 is a low power, high quality stereo codec with integrated PCM
14 * codec designed for portable digital telephony applications.
18 * This driver support 2 DAI PCM's. This makes the default PCM available for
19 * HiFi audio (e.g. MP3, ogg) playback/capture and the other PCM available for
22 * Please note that the voice PCM can be connected directly to a Bluetooth
23 * codec or GSM modem and thus cannot be read or written to, although it is
24 * available to be configured with snd_hw_params(), etc and kcontrols in the
27 * Fast DAI switching:-
29 * The driver can now fast switch between the DAI configurations via a
30 * an alsa kcontrol. This allows the PCM to remain open.
34 #include <linux/module.h>
35 #include <linux/moduleparam.h>
36 #include <linux/kernel.h>
37 #include <linux/init.h>
38 #include <linux/delay.h>
40 #include <linux/i2c.h>
41 #include <linux/platform_device.h>
42 #include <linux/spi/spi.h>
43 #include <linux/slab.h>
44 #include <sound/core.h>
45 #include <sound/pcm.h>
46 #include <sound/pcm_params.h>
47 #include <sound/soc.h>
48 #include <sound/soc-dapm.h>
49 #include <sound/initval.h>
50 #include <sound/tlv.h>
51 #include <asm/div64.h>
55 static int caps_charge
= 2000;
56 module_param(caps_charge
, int, 0);
57 MODULE_PARM_DESC(caps_charge
, "WM8753 cap charge time (msecs)");
59 static void wm8753_set_dai_mode(struct snd_soc_codec
*codec
,
60 struct snd_soc_dai
*dai
, unsigned int hifi
);
63 * wm8753 register cache
64 * We can't read the WM8753 register space when we
65 * are using 2 wire for device control, so we cache them instead.
67 static const u16 wm8753_reg
[] = {
68 0x0008, 0x0000, 0x000a, 0x000a,
69 0x0033, 0x0000, 0x0007, 0x00ff,
70 0x00ff, 0x000f, 0x000f, 0x007b,
71 0x0000, 0x0032, 0x0000, 0x00c3,
72 0x00c3, 0x00c0, 0x0000, 0x0000,
73 0x0000, 0x0000, 0x0000, 0x0000,
74 0x0000, 0x0000, 0x0000, 0x0000,
75 0x0000, 0x0000, 0x0000, 0x0055,
76 0x0005, 0x0050, 0x0055, 0x0050,
77 0x0055, 0x0050, 0x0055, 0x0079,
78 0x0079, 0x0079, 0x0079, 0x0079,
79 0x0000, 0x0000, 0x0000, 0x0000,
80 0x0097, 0x0097, 0x0000, 0x0004,
81 0x0000, 0x0083, 0x0024, 0x01ba,
82 0x0000, 0x0083, 0x0024, 0x01ba,
83 0x0000, 0x0000, 0x0000
86 /* codec private data */
88 enum snd_soc_control_type control_type
;
92 u16 reg_cache
[ARRAY_SIZE(wm8753_reg
)];
97 * read wm8753 register cache
99 static inline unsigned int wm8753_read_reg_cache(struct snd_soc_codec
*codec
,
102 u16
*cache
= codec
->reg_cache
;
103 if (reg
< 1 || reg
>= (ARRAY_SIZE(wm8753_reg
) + 1))
105 return cache
[reg
- 1];
109 * write wm8753 register cache
111 static inline void wm8753_write_reg_cache(struct snd_soc_codec
*codec
,
112 unsigned int reg
, unsigned int value
)
114 u16
*cache
= codec
->reg_cache
;
115 if (reg
< 1 || reg
>= (ARRAY_SIZE(wm8753_reg
) + 1))
117 cache
[reg
- 1] = value
;
121 * write to the WM8753 register space
123 static int wm8753_write(struct snd_soc_codec
*codec
, unsigned int reg
,
129 * D15..D9 WM8753 register offset
130 * D8...D0 register data
132 data
[0] = (reg
<< 1) | ((value
>> 8) & 0x0001);
133 data
[1] = value
& 0x00ff;
135 wm8753_write_reg_cache(codec
, reg
, value
);
136 if (codec
->hw_write(codec
->control_data
, data
, 2) == 2)
142 #define wm8753_reset(c) wm8753_write(c, WM8753_RESET, 0)
147 static const char *wm8753_base
[] = {"Linear Control", "Adaptive Boost"};
148 static const char *wm8753_base_filter
[] =
149 {"130Hz @ 48kHz", "200Hz @ 48kHz", "100Hz @ 16kHz", "400Hz @ 48kHz",
150 "100Hz @ 8kHz", "200Hz @ 8kHz"};
151 static const char *wm8753_treble
[] = {"8kHz", "4kHz"};
152 static const char *wm8753_alc_func
[] = {"Off", "Right", "Left", "Stereo"};
153 static const char *wm8753_ng_type
[] = {"Constant PGA Gain", "Mute ADC Output"};
154 static const char *wm8753_3d_func
[] = {"Capture", "Playback"};
155 static const char *wm8753_3d_uc
[] = {"2.2kHz", "1.5kHz"};
156 static const char *wm8753_3d_lc
[] = {"200Hz", "500Hz"};
157 static const char *wm8753_deemp
[] = {"None", "32kHz", "44.1kHz", "48kHz"};
158 static const char *wm8753_mono_mix
[] = {"Stereo", "Left", "Right", "Mono"};
159 static const char *wm8753_dac_phase
[] = {"Non Inverted", "Inverted"};
160 static const char *wm8753_line_mix
[] = {"Line 1 + 2", "Line 1 - 2",
162 static const char *wm8753_mono_mux
[] = {"Line Mix", "Rx Mix"};
163 static const char *wm8753_right_mux
[] = {"Line 2", "Rx Mix"};
164 static const char *wm8753_left_mux
[] = {"Line 1", "Rx Mix"};
165 static const char *wm8753_rxmsel
[] = {"RXP - RXN", "RXP + RXN", "RXP", "RXN"};
166 static const char *wm8753_sidetone_mux
[] = {"Left PGA", "Mic 1", "Mic 2",
168 static const char *wm8753_mono2_src
[] = {"Inverted Mono 1", "Left", "Right",
170 static const char *wm8753_out3
[] = {"VREF", "ROUT2", "Left + Right"};
171 static const char *wm8753_out4
[] = {"VREF", "Capture ST", "LOUT2"};
172 static const char *wm8753_radcsel
[] = {"PGA", "Line or RXP-RXN", "Sidetone"};
173 static const char *wm8753_ladcsel
[] = {"PGA", "Line or RXP-RXN", "Line"};
174 static const char *wm8753_mono_adc
[] = {"Stereo", "Analogue Mix Left",
175 "Analogue Mix Right", "Digital Mono Mix"};
176 static const char *wm8753_adc_hp
[] = {"3.4Hz @ 48kHz", "82Hz @ 16k",
177 "82Hz @ 8kHz", "170Hz @ 8kHz"};
178 static const char *wm8753_adc_filter
[] = {"HiFi", "Voice"};
179 static const char *wm8753_mic_sel
[] = {"Mic 1", "Mic 2", "Mic 3"};
180 static const char *wm8753_dai_mode
[] = {"DAI 0", "DAI 1", "DAI 2", "DAI 3"};
181 static const char *wm8753_dat_sel
[] = {"Stereo", "Left ADC", "Right ADC",
183 static const char *wm8753_rout2_phase
[] = {"Non Inverted", "Inverted"};
185 static const struct soc_enum wm8753_enum
[] = {
186 SOC_ENUM_SINGLE(WM8753_BASS
, 7, 2, wm8753_base
),
187 SOC_ENUM_SINGLE(WM8753_BASS
, 4, 6, wm8753_base_filter
),
188 SOC_ENUM_SINGLE(WM8753_TREBLE
, 6, 2, wm8753_treble
),
189 SOC_ENUM_SINGLE(WM8753_ALC1
, 7, 4, wm8753_alc_func
),
190 SOC_ENUM_SINGLE(WM8753_NGATE
, 1, 2, wm8753_ng_type
),
191 SOC_ENUM_SINGLE(WM8753_3D
, 7, 2, wm8753_3d_func
),
192 SOC_ENUM_SINGLE(WM8753_3D
, 6, 2, wm8753_3d_uc
),
193 SOC_ENUM_SINGLE(WM8753_3D
, 5, 2, wm8753_3d_lc
),
194 SOC_ENUM_SINGLE(WM8753_DAC
, 1, 4, wm8753_deemp
),
195 SOC_ENUM_SINGLE(WM8753_DAC
, 4, 4, wm8753_mono_mix
),
196 SOC_ENUM_SINGLE(WM8753_DAC
, 6, 2, wm8753_dac_phase
),
197 SOC_ENUM_SINGLE(WM8753_INCTL1
, 3, 4, wm8753_line_mix
),
198 SOC_ENUM_SINGLE(WM8753_INCTL1
, 2, 2, wm8753_mono_mux
),
199 SOC_ENUM_SINGLE(WM8753_INCTL1
, 1, 2, wm8753_right_mux
),
200 SOC_ENUM_SINGLE(WM8753_INCTL1
, 0, 2, wm8753_left_mux
),
201 SOC_ENUM_SINGLE(WM8753_INCTL2
, 6, 4, wm8753_rxmsel
),
202 SOC_ENUM_SINGLE(WM8753_INCTL2
, 4, 4, wm8753_sidetone_mux
),
203 SOC_ENUM_SINGLE(WM8753_OUTCTL
, 7, 4, wm8753_mono2_src
),
204 SOC_ENUM_SINGLE(WM8753_OUTCTL
, 0, 3, wm8753_out3
),
205 SOC_ENUM_SINGLE(WM8753_ADCTL2
, 7, 3, wm8753_out4
),
206 SOC_ENUM_SINGLE(WM8753_ADCIN
, 2, 3, wm8753_radcsel
),
207 SOC_ENUM_SINGLE(WM8753_ADCIN
, 0, 3, wm8753_ladcsel
),
208 SOC_ENUM_SINGLE(WM8753_ADCIN
, 4, 4, wm8753_mono_adc
),
209 SOC_ENUM_SINGLE(WM8753_ADC
, 2, 4, wm8753_adc_hp
),
210 SOC_ENUM_SINGLE(WM8753_ADC
, 4, 2, wm8753_adc_filter
),
211 SOC_ENUM_SINGLE(WM8753_MICBIAS
, 6, 3, wm8753_mic_sel
),
212 SOC_ENUM_SINGLE(WM8753_IOCTL
, 2, 4, wm8753_dai_mode
),
213 SOC_ENUM_SINGLE(WM8753_ADC
, 7, 4, wm8753_dat_sel
),
214 SOC_ENUM_SINGLE(WM8753_OUTCTL
, 2, 2, wm8753_rout2_phase
),
218 static int wm8753_get_dai(struct snd_kcontrol
*kcontrol
,
219 struct snd_ctl_elem_value
*ucontrol
)
221 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
222 int mode
= wm8753_read_reg_cache(codec
, WM8753_IOCTL
);
224 ucontrol
->value
.integer
.value
[0] = (mode
& 0xc) >> 2;
228 static int wm8753_set_dai(struct snd_kcontrol
*kcontrol
,
229 struct snd_ctl_elem_value
*ucontrol
)
231 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
232 int mode
= wm8753_read_reg_cache(codec
, WM8753_IOCTL
);
233 struct wm8753_priv
*wm8753
= snd_soc_codec_get_drvdata(codec
);
235 if (((mode
& 0xc) >> 2) == ucontrol
->value
.integer
.value
[0])
239 mode
|= (ucontrol
->value
.integer
.value
[0] << 2);
241 wm8753
->dai_func
= ucontrol
->value
.integer
.value
[0];
245 static const DECLARE_TLV_DB_SCALE(rec_mix_tlv
, -1500, 300, 0);
246 static const DECLARE_TLV_DB_SCALE(mic_preamp_tlv
, 1200, 600, 0);
247 static const DECLARE_TLV_DB_SCALE(adc_tlv
, -9750, 50, 1);
248 static const DECLARE_TLV_DB_SCALE(dac_tlv
, -12750, 50, 1);
249 static const unsigned int out_tlv
[] = {
250 TLV_DB_RANGE_HEAD(2),
251 /* 0000000 - 0101111 = "Analogue mute" */
252 0, 48, TLV_DB_SCALE_ITEM(-25500, 0, 0),
253 48, 127, TLV_DB_SCALE_ITEM(-7300, 100, 0),
255 static const DECLARE_TLV_DB_SCALE(mix_tlv
, -1500, 300, 0);
256 static const DECLARE_TLV_DB_SCALE(voice_mix_tlv
, -1200, 300, 0);
257 static const DECLARE_TLV_DB_SCALE(pga_tlv
, -1725, 75, 0);
259 static const struct snd_kcontrol_new wm8753_snd_controls
[] = {
260 SOC_DOUBLE_R_TLV("PCM Volume", WM8753_LDAC
, WM8753_RDAC
, 0, 255, 0, dac_tlv
),
262 SOC_DOUBLE_R_TLV("ADC Capture Volume", WM8753_LADC
, WM8753_RADC
, 0, 255, 0,
265 SOC_DOUBLE_R_TLV("Headphone Playback Volume", WM8753_LOUT1V
, WM8753_ROUT1V
,
267 SOC_DOUBLE_R_TLV("Speaker Playback Volume", WM8753_LOUT2V
, WM8753_ROUT2V
, 0,
270 SOC_SINGLE_TLV("Mono Playback Volume", WM8753_MOUTV
, 0, 127, 0, out_tlv
),
272 SOC_DOUBLE_R_TLV("Bypass Playback Volume", WM8753_LOUTM1
, WM8753_ROUTM1
, 4, 7,
274 SOC_DOUBLE_R_TLV("Sidetone Playback Volume", WM8753_LOUTM2
, WM8753_ROUTM2
, 4,
276 SOC_DOUBLE_R_TLV("Voice Playback Volume", WM8753_LOUTM2
, WM8753_ROUTM2
, 0, 7,
279 SOC_DOUBLE_R("Headphone Playback ZC Switch", WM8753_LOUT1V
, WM8753_ROUT1V
, 7,
281 SOC_DOUBLE_R("Speaker Playback ZC Switch", WM8753_LOUT2V
, WM8753_ROUT2V
, 7,
284 SOC_SINGLE_TLV("Mono Bypass Playback Volume", WM8753_MOUTM1
, 4, 7, 1, mix_tlv
),
285 SOC_SINGLE_TLV("Mono Sidetone Playback Volume", WM8753_MOUTM2
, 4, 7, 1,
287 SOC_SINGLE_TLV("Mono Voice Playback Volume", WM8753_MOUTM2
, 0, 7, 1,
289 SOC_SINGLE("Mono Playback ZC Switch", WM8753_MOUTV
, 7, 1, 0),
291 SOC_ENUM("Bass Boost", wm8753_enum
[0]),
292 SOC_ENUM("Bass Filter", wm8753_enum
[1]),
293 SOC_SINGLE("Bass Volume", WM8753_BASS
, 0, 15, 1),
295 SOC_SINGLE("Treble Volume", WM8753_TREBLE
, 0, 15, 1),
296 SOC_ENUM("Treble Cut-off", wm8753_enum
[2]),
298 SOC_DOUBLE_TLV("Sidetone Capture Volume", WM8753_RECMIX1
, 0, 4, 7, 1,
300 SOC_SINGLE_TLV("Voice Sidetone Capture Volume", WM8753_RECMIX2
, 0, 7, 1,
303 SOC_DOUBLE_R_TLV("Capture Volume", WM8753_LINVOL
, WM8753_RINVOL
, 0, 63, 0,
305 SOC_DOUBLE_R("Capture ZC Switch", WM8753_LINVOL
, WM8753_RINVOL
, 6, 1, 0),
306 SOC_DOUBLE_R("Capture Switch", WM8753_LINVOL
, WM8753_RINVOL
, 7, 1, 1),
308 SOC_ENUM("Capture Filter Select", wm8753_enum
[23]),
309 SOC_ENUM("Capture Filter Cut-off", wm8753_enum
[24]),
310 SOC_SINGLE("Capture Filter Switch", WM8753_ADC
, 0, 1, 1),
312 SOC_SINGLE("ALC Capture Target Volume", WM8753_ALC1
, 0, 7, 0),
313 SOC_SINGLE("ALC Capture Max Volume", WM8753_ALC1
, 4, 7, 0),
314 SOC_ENUM("ALC Capture Function", wm8753_enum
[3]),
315 SOC_SINGLE("ALC Capture ZC Switch", WM8753_ALC2
, 8, 1, 0),
316 SOC_SINGLE("ALC Capture Hold Time", WM8753_ALC2
, 0, 15, 1),
317 SOC_SINGLE("ALC Capture Decay Time", WM8753_ALC3
, 4, 15, 1),
318 SOC_SINGLE("ALC Capture Attack Time", WM8753_ALC3
, 0, 15, 0),
319 SOC_SINGLE("ALC Capture NG Threshold", WM8753_NGATE
, 3, 31, 0),
320 SOC_ENUM("ALC Capture NG Type", wm8753_enum
[4]),
321 SOC_SINGLE("ALC Capture NG Switch", WM8753_NGATE
, 0, 1, 0),
323 SOC_ENUM("3D Function", wm8753_enum
[5]),
324 SOC_ENUM("3D Upper Cut-off", wm8753_enum
[6]),
325 SOC_ENUM("3D Lower Cut-off", wm8753_enum
[7]),
326 SOC_SINGLE("3D Volume", WM8753_3D
, 1, 15, 0),
327 SOC_SINGLE("3D Switch", WM8753_3D
, 0, 1, 0),
329 SOC_SINGLE("Capture 6dB Attenuate", WM8753_ADCTL1
, 2, 1, 0),
330 SOC_SINGLE("Playback 6dB Attenuate", WM8753_ADCTL1
, 1, 1, 0),
332 SOC_ENUM("De-emphasis", wm8753_enum
[8]),
333 SOC_ENUM("Playback Mono Mix", wm8753_enum
[9]),
334 SOC_ENUM("Playback Phase", wm8753_enum
[10]),
336 SOC_SINGLE_TLV("Mic2 Capture Volume", WM8753_INCTL1
, 7, 3, 0, mic_preamp_tlv
),
337 SOC_SINGLE_TLV("Mic1 Capture Volume", WM8753_INCTL1
, 5, 3, 0, mic_preamp_tlv
),
339 SOC_ENUM_EXT("DAI Mode", wm8753_enum
[26], wm8753_get_dai
, wm8753_set_dai
),
341 SOC_ENUM("ADC Data Select", wm8753_enum
[27]),
342 SOC_ENUM("ROUT2 Phase", wm8753_enum
[28]),
350 static const struct snd_kcontrol_new wm8753_left_mixer_controls
[] = {
351 SOC_DAPM_SINGLE("Voice Playback Switch", WM8753_LOUTM2
, 8, 1, 0),
352 SOC_DAPM_SINGLE("Sidetone Playback Switch", WM8753_LOUTM2
, 7, 1, 0),
353 SOC_DAPM_SINGLE("Left Playback Switch", WM8753_LOUTM1
, 8, 1, 0),
354 SOC_DAPM_SINGLE("Bypass Playback Switch", WM8753_LOUTM1
, 7, 1, 0),
358 static const struct snd_kcontrol_new wm8753_right_mixer_controls
[] = {
359 SOC_DAPM_SINGLE("Voice Playback Switch", WM8753_ROUTM2
, 8, 1, 0),
360 SOC_DAPM_SINGLE("Sidetone Playback Switch", WM8753_ROUTM2
, 7, 1, 0),
361 SOC_DAPM_SINGLE("Right Playback Switch", WM8753_ROUTM1
, 8, 1, 0),
362 SOC_DAPM_SINGLE("Bypass Playback Switch", WM8753_ROUTM1
, 7, 1, 0),
366 static const struct snd_kcontrol_new wm8753_mono_mixer_controls
[] = {
367 SOC_DAPM_SINGLE("Left Playback Switch", WM8753_MOUTM1
, 8, 1, 0),
368 SOC_DAPM_SINGLE("Right Playback Switch", WM8753_MOUTM2
, 8, 1, 0),
369 SOC_DAPM_SINGLE("Voice Playback Switch", WM8753_MOUTM2
, 3, 1, 0),
370 SOC_DAPM_SINGLE("Sidetone Playback Switch", WM8753_MOUTM2
, 7, 1, 0),
371 SOC_DAPM_SINGLE("Bypass Playback Switch", WM8753_MOUTM1
, 7, 1, 0),
375 static const struct snd_kcontrol_new wm8753_mono2_controls
=
376 SOC_DAPM_ENUM("Route", wm8753_enum
[17]);
379 static const struct snd_kcontrol_new wm8753_out3_controls
=
380 SOC_DAPM_ENUM("Route", wm8753_enum
[18]);
383 static const struct snd_kcontrol_new wm8753_out4_controls
=
384 SOC_DAPM_ENUM("Route", wm8753_enum
[19]);
387 static const struct snd_kcontrol_new wm8753_adc_mono_controls
=
388 SOC_DAPM_ENUM("Route", wm8753_enum
[22]);
391 static const struct snd_kcontrol_new wm8753_record_mixer_controls
[] = {
392 SOC_DAPM_SINGLE("Voice Capture Switch", WM8753_RECMIX2
, 3, 1, 0),
393 SOC_DAPM_SINGLE("Left Capture Switch", WM8753_RECMIX1
, 3, 1, 0),
394 SOC_DAPM_SINGLE("Right Capture Switch", WM8753_RECMIX1
, 7, 1, 0),
398 static const struct snd_kcontrol_new wm8753_adc_left_controls
=
399 SOC_DAPM_ENUM("Route", wm8753_enum
[21]);
402 static const struct snd_kcontrol_new wm8753_adc_right_controls
=
403 SOC_DAPM_ENUM("Route", wm8753_enum
[20]);
406 static const struct snd_kcontrol_new wm8753_mic_mux_controls
=
407 SOC_DAPM_ENUM("Route", wm8753_enum
[16]);
410 static const struct snd_kcontrol_new wm8753_alc_mixer_controls
[] = {
411 SOC_DAPM_SINGLE("Line Capture Switch", WM8753_INCTL2
, 3, 1, 0),
412 SOC_DAPM_SINGLE("Mic2 Capture Switch", WM8753_INCTL2
, 2, 1, 0),
413 SOC_DAPM_SINGLE("Mic1 Capture Switch", WM8753_INCTL2
, 1, 1, 0),
414 SOC_DAPM_SINGLE("Rx Capture Switch", WM8753_INCTL2
, 0, 1, 0),
418 static const struct snd_kcontrol_new wm8753_line_left_controls
=
419 SOC_DAPM_ENUM("Route", wm8753_enum
[14]);
422 static const struct snd_kcontrol_new wm8753_line_right_controls
=
423 SOC_DAPM_ENUM("Route", wm8753_enum
[13]);
426 static const struct snd_kcontrol_new wm8753_line_mono_controls
=
427 SOC_DAPM_ENUM("Route", wm8753_enum
[12]);
429 /* Line mux and mixer */
430 static const struct snd_kcontrol_new wm8753_line_mux_mix_controls
=
431 SOC_DAPM_ENUM("Route", wm8753_enum
[11]);
433 /* Rx mux and mixer */
434 static const struct snd_kcontrol_new wm8753_rx_mux_mix_controls
=
435 SOC_DAPM_ENUM("Route", wm8753_enum
[15]);
437 /* Mic Selector Mux */
438 static const struct snd_kcontrol_new wm8753_mic_sel_mux_controls
=
439 SOC_DAPM_ENUM("Route", wm8753_enum
[25]);
441 static const struct snd_soc_dapm_widget wm8753_dapm_widgets
[] = {
442 SND_SOC_DAPM_MICBIAS("Mic Bias", WM8753_PWR1
, 5, 0),
443 SND_SOC_DAPM_MIXER("Left Mixer", WM8753_PWR4
, 0, 0,
444 &wm8753_left_mixer_controls
[0], ARRAY_SIZE(wm8753_left_mixer_controls
)),
445 SND_SOC_DAPM_PGA("Left Out 1", WM8753_PWR3
, 8, 0, NULL
, 0),
446 SND_SOC_DAPM_PGA("Left Out 2", WM8753_PWR3
, 6, 0, NULL
, 0),
447 SND_SOC_DAPM_DAC("Left DAC", "Left HiFi Playback", WM8753_PWR1
, 3, 0),
448 SND_SOC_DAPM_OUTPUT("LOUT1"),
449 SND_SOC_DAPM_OUTPUT("LOUT2"),
450 SND_SOC_DAPM_MIXER("Right Mixer", WM8753_PWR4
, 1, 0,
451 &wm8753_right_mixer_controls
[0], ARRAY_SIZE(wm8753_right_mixer_controls
)),
452 SND_SOC_DAPM_PGA("Right Out 1", WM8753_PWR3
, 7, 0, NULL
, 0),
453 SND_SOC_DAPM_PGA("Right Out 2", WM8753_PWR3
, 5, 0, NULL
, 0),
454 SND_SOC_DAPM_DAC("Right DAC", "Right HiFi Playback", WM8753_PWR1
, 2, 0),
455 SND_SOC_DAPM_OUTPUT("ROUT1"),
456 SND_SOC_DAPM_OUTPUT("ROUT2"),
457 SND_SOC_DAPM_MIXER("Mono Mixer", WM8753_PWR4
, 2, 0,
458 &wm8753_mono_mixer_controls
[0], ARRAY_SIZE(wm8753_mono_mixer_controls
)),
459 SND_SOC_DAPM_PGA("Mono Out 1", WM8753_PWR3
, 2, 0, NULL
, 0),
460 SND_SOC_DAPM_PGA("Mono Out 2", WM8753_PWR3
, 1, 0, NULL
, 0),
461 SND_SOC_DAPM_DAC("Voice DAC", "Voice Playback", WM8753_PWR1
, 4, 0),
462 SND_SOC_DAPM_OUTPUT("MONO1"),
463 SND_SOC_DAPM_MUX("Mono 2 Mux", SND_SOC_NOPM
, 0, 0, &wm8753_mono2_controls
),
464 SND_SOC_DAPM_OUTPUT("MONO2"),
465 SND_SOC_DAPM_MIXER("Out3 Left + Right", -1, 0, 0, NULL
, 0),
466 SND_SOC_DAPM_MUX("Out3 Mux", SND_SOC_NOPM
, 0, 0, &wm8753_out3_controls
),
467 SND_SOC_DAPM_PGA("Out 3", WM8753_PWR3
, 4, 0, NULL
, 0),
468 SND_SOC_DAPM_OUTPUT("OUT3"),
469 SND_SOC_DAPM_MUX("Out4 Mux", SND_SOC_NOPM
, 0, 0, &wm8753_out4_controls
),
470 SND_SOC_DAPM_PGA("Out 4", WM8753_PWR3
, 3, 0, NULL
, 0),
471 SND_SOC_DAPM_OUTPUT("OUT4"),
472 SND_SOC_DAPM_MIXER("Playback Mixer", WM8753_PWR4
, 3, 0,
473 &wm8753_record_mixer_controls
[0],
474 ARRAY_SIZE(wm8753_record_mixer_controls
)),
475 SND_SOC_DAPM_ADC("Left ADC", "Left Capture", WM8753_PWR2
, 3, 0),
476 SND_SOC_DAPM_ADC("Right ADC", "Right Capture", WM8753_PWR2
, 2, 0),
477 SND_SOC_DAPM_MUX("Capture Left Mixer", SND_SOC_NOPM
, 0, 0,
478 &wm8753_adc_mono_controls
),
479 SND_SOC_DAPM_MUX("Capture Right Mixer", SND_SOC_NOPM
, 0, 0,
480 &wm8753_adc_mono_controls
),
481 SND_SOC_DAPM_MUX("Capture Left Mux", SND_SOC_NOPM
, 0, 0,
482 &wm8753_adc_left_controls
),
483 SND_SOC_DAPM_MUX("Capture Right Mux", SND_SOC_NOPM
, 0, 0,
484 &wm8753_adc_right_controls
),
485 SND_SOC_DAPM_MUX("Mic Sidetone Mux", SND_SOC_NOPM
, 0, 0,
486 &wm8753_mic_mux_controls
),
487 SND_SOC_DAPM_PGA("Left Capture Volume", WM8753_PWR2
, 5, 0, NULL
, 0),
488 SND_SOC_DAPM_PGA("Right Capture Volume", WM8753_PWR2
, 4, 0, NULL
, 0),
489 SND_SOC_DAPM_MIXER("ALC Mixer", WM8753_PWR2
, 6, 0,
490 &wm8753_alc_mixer_controls
[0], ARRAY_SIZE(wm8753_alc_mixer_controls
)),
491 SND_SOC_DAPM_MUX("Line Left Mux", SND_SOC_NOPM
, 0, 0,
492 &wm8753_line_left_controls
),
493 SND_SOC_DAPM_MUX("Line Right Mux", SND_SOC_NOPM
, 0, 0,
494 &wm8753_line_right_controls
),
495 SND_SOC_DAPM_MUX("Line Mono Mux", SND_SOC_NOPM
, 0, 0,
496 &wm8753_line_mono_controls
),
497 SND_SOC_DAPM_MUX("Line Mixer", WM8753_PWR2
, 0, 0,
498 &wm8753_line_mux_mix_controls
),
499 SND_SOC_DAPM_MUX("Rx Mixer", WM8753_PWR2
, 1, 0,
500 &wm8753_rx_mux_mix_controls
),
501 SND_SOC_DAPM_PGA("Mic 1 Volume", WM8753_PWR2
, 8, 0, NULL
, 0),
502 SND_SOC_DAPM_PGA("Mic 2 Volume", WM8753_PWR2
, 7, 0, NULL
, 0),
503 SND_SOC_DAPM_MUX("Mic Selection Mux", SND_SOC_NOPM
, 0, 0,
504 &wm8753_mic_sel_mux_controls
),
505 SND_SOC_DAPM_INPUT("LINE1"),
506 SND_SOC_DAPM_INPUT("LINE2"),
507 SND_SOC_DAPM_INPUT("RXP"),
508 SND_SOC_DAPM_INPUT("RXN"),
509 SND_SOC_DAPM_INPUT("ACIN"),
510 SND_SOC_DAPM_OUTPUT("ACOP"),
511 SND_SOC_DAPM_INPUT("MIC1N"),
512 SND_SOC_DAPM_INPUT("MIC1"),
513 SND_SOC_DAPM_INPUT("MIC2N"),
514 SND_SOC_DAPM_INPUT("MIC2"),
515 SND_SOC_DAPM_VMID("VREF"),
518 static const struct snd_soc_dapm_route audio_map
[] = {
520 {"Left Mixer", "Left Playback Switch", "Left DAC"},
521 {"Left Mixer", "Voice Playback Switch", "Voice DAC"},
522 {"Left Mixer", "Sidetone Playback Switch", "Mic Sidetone Mux"},
523 {"Left Mixer", "Bypass Playback Switch", "Line Left Mux"},
526 {"Right Mixer", "Right Playback Switch", "Right DAC"},
527 {"Right Mixer", "Voice Playback Switch", "Voice DAC"},
528 {"Right Mixer", "Sidetone Playback Switch", "Mic Sidetone Mux"},
529 {"Right Mixer", "Bypass Playback Switch", "Line Right Mux"},
532 {"Mono Mixer", "Voice Playback Switch", "Voice DAC"},
533 {"Mono Mixer", "Left Playback Switch", "Left DAC"},
534 {"Mono Mixer", "Right Playback Switch", "Right DAC"},
535 {"Mono Mixer", "Sidetone Playback Switch", "Mic Sidetone Mux"},
536 {"Mono Mixer", "Bypass Playback Switch", "Line Mono Mux"},
539 {"Left Out 1", NULL
, "Left Mixer"},
540 {"Left Out 2", NULL
, "Left Mixer"},
541 {"LOUT1", NULL
, "Left Out 1"},
542 {"LOUT2", NULL
, "Left Out 2"},
545 {"Right Out 1", NULL
, "Right Mixer"},
546 {"Right Out 2", NULL
, "Right Mixer"},
547 {"ROUT1", NULL
, "Right Out 1"},
548 {"ROUT2", NULL
, "Right Out 2"},
551 {"Mono Out 1", NULL
, "Mono Mixer"},
552 {"MONO1", NULL
, "Mono Out 1"},
555 {"Mono 2 Mux", "Left + Right", "Out3 Left + Right"},
556 {"Mono 2 Mux", "Inverted Mono 1", "MONO1"},
557 {"Mono 2 Mux", "Left", "Left Mixer"},
558 {"Mono 2 Mux", "Right", "Right Mixer"},
559 {"Mono Out 2", NULL
, "Mono 2 Mux"},
560 {"MONO2", NULL
, "Mono Out 2"},
563 {"Out3 Left + Right", NULL
, "Left Mixer"},
564 {"Out3 Left + Right", NULL
, "Right Mixer"},
565 {"Out3 Mux", "VREF", "VREF"},
566 {"Out3 Mux", "Left + Right", "Out3 Left + Right"},
567 {"Out3 Mux", "ROUT2", "ROUT2"},
568 {"Out 3", NULL
, "Out3 Mux"},
569 {"OUT3", NULL
, "Out 3"},
572 {"Out4 Mux", "VREF", "VREF"},
573 {"Out4 Mux", "Capture ST", "Playback Mixer"},
574 {"Out4 Mux", "LOUT2", "LOUT2"},
575 {"Out 4", NULL
, "Out4 Mux"},
576 {"OUT4", NULL
, "Out 4"},
579 {"Playback Mixer", "Left Capture Switch", "Left Mixer"},
580 {"Playback Mixer", "Voice Capture Switch", "Mono Mixer"},
581 {"Playback Mixer", "Right Capture Switch", "Right Mixer"},
583 /* Mic/SideTone Mux */
584 {"Mic Sidetone Mux", "Left PGA", "Left Capture Volume"},
585 {"Mic Sidetone Mux", "Right PGA", "Right Capture Volume"},
586 {"Mic Sidetone Mux", "Mic 1", "Mic 1 Volume"},
587 {"Mic Sidetone Mux", "Mic 2", "Mic 2 Volume"},
589 /* Capture Left Mux */
590 {"Capture Left Mux", "PGA", "Left Capture Volume"},
591 {"Capture Left Mux", "Line or RXP-RXN", "Line Left Mux"},
592 {"Capture Left Mux", "Line", "LINE1"},
594 /* Capture Right Mux */
595 {"Capture Right Mux", "PGA", "Right Capture Volume"},
596 {"Capture Right Mux", "Line or RXP-RXN", "Line Right Mux"},
597 {"Capture Right Mux", "Sidetone", "Playback Mixer"},
599 /* Mono Capture mixer-mux */
600 {"Capture Right Mixer", "Stereo", "Capture Right Mux"},
601 {"Capture Left Mixer", "Stereo", "Capture Left Mux"},
602 {"Capture Left Mixer", "Analogue Mix Left", "Capture Left Mux"},
603 {"Capture Left Mixer", "Analogue Mix Left", "Capture Right Mux"},
604 {"Capture Right Mixer", "Analogue Mix Right", "Capture Left Mux"},
605 {"Capture Right Mixer", "Analogue Mix Right", "Capture Right Mux"},
606 {"Capture Left Mixer", "Digital Mono Mix", "Capture Left Mux"},
607 {"Capture Left Mixer", "Digital Mono Mix", "Capture Right Mux"},
608 {"Capture Right Mixer", "Digital Mono Mix", "Capture Left Mux"},
609 {"Capture Right Mixer", "Digital Mono Mix", "Capture Right Mux"},
612 {"Left ADC", NULL
, "Capture Left Mixer"},
613 {"Right ADC", NULL
, "Capture Right Mixer"},
615 /* Left Capture Volume */
616 {"Left Capture Volume", NULL
, "ACIN"},
618 /* Right Capture Volume */
619 {"Right Capture Volume", NULL
, "Mic 2 Volume"},
622 {"ALC Mixer", "Line Capture Switch", "Line Mixer"},
623 {"ALC Mixer", "Mic2 Capture Switch", "Mic 2 Volume"},
624 {"ALC Mixer", "Mic1 Capture Switch", "Mic 1 Volume"},
625 {"ALC Mixer", "Rx Capture Switch", "Rx Mixer"},
628 {"Line Left Mux", "Line 1", "LINE1"},
629 {"Line Left Mux", "Rx Mix", "Rx Mixer"},
632 {"Line Right Mux", "Line 2", "LINE2"},
633 {"Line Right Mux", "Rx Mix", "Rx Mixer"},
636 {"Line Mono Mux", "Line Mix", "Line Mixer"},
637 {"Line Mono Mux", "Rx Mix", "Rx Mixer"},
640 {"Line Mixer", "Line 1 + 2", "LINE1"},
641 {"Line Mixer", "Line 1 - 2", "LINE1"},
642 {"Line Mixer", "Line 1 + 2", "LINE2"},
643 {"Line Mixer", "Line 1 - 2", "LINE2"},
644 {"Line Mixer", "Line 1", "LINE1"},
645 {"Line Mixer", "Line 2", "LINE2"},
648 {"Rx Mixer", "RXP - RXN", "RXP"},
649 {"Rx Mixer", "RXP + RXN", "RXP"},
650 {"Rx Mixer", "RXP - RXN", "RXN"},
651 {"Rx Mixer", "RXP + RXN", "RXN"},
652 {"Rx Mixer", "RXP", "RXP"},
653 {"Rx Mixer", "RXN", "RXN"},
656 {"Mic 1 Volume", NULL
, "MIC1N"},
657 {"Mic 1 Volume", NULL
, "Mic Selection Mux"},
660 {"Mic 2 Volume", NULL
, "MIC2N"},
661 {"Mic 2 Volume", NULL
, "MIC2"},
663 /* Mic Selector Mux */
664 {"Mic Selection Mux", "Mic 1", "MIC1"},
665 {"Mic Selection Mux", "Mic 2", "MIC2N"},
666 {"Mic Selection Mux", "Mic 3", "MIC2"},
669 {"ACOP", NULL
, "ALC Mixer"},
672 static int wm8753_add_widgets(struct snd_soc_codec
*codec
)
674 snd_soc_dapm_new_controls(codec
, wm8753_dapm_widgets
,
675 ARRAY_SIZE(wm8753_dapm_widgets
));
677 snd_soc_dapm_add_routes(codec
, audio_map
, ARRAY_SIZE(audio_map
));
689 /* The size in bits of the pll divide multiplied by 10
690 * to allow rounding later */
691 #define FIXED_PLL_SIZE ((1 << 22) * 10)
693 static void pll_factors(struct _pll_div
*pll_div
, unsigned int target
,
697 unsigned int K
, Ndiv
, Nmod
;
699 Ndiv
= target
/ source
;
703 Ndiv
= target
/ source
;
707 if ((Ndiv
< 6) || (Ndiv
> 12))
709 "wm8753: unsupported N = %u\n", Ndiv
);
712 Nmod
= target
% source
;
713 Kpart
= FIXED_PLL_SIZE
* (long long)Nmod
;
715 do_div(Kpart
, source
);
717 K
= Kpart
& 0xFFFFFFFF;
719 /* Check if we need to round */
723 /* Move down to proper range now rounding is done */
729 static int wm8753_set_dai_pll(struct snd_soc_dai
*codec_dai
, int pll_id
,
730 int source
, unsigned int freq_in
, unsigned int freq_out
)
734 struct snd_soc_codec
*codec
= codec_dai
->codec
;
736 if (pll_id
< WM8753_PLL1
|| pll_id
> WM8753_PLL2
)
739 if (pll_id
== WM8753_PLL1
) {
742 reg
= wm8753_read_reg_cache(codec
, WM8753_CLOCK
) & 0xffef;
746 reg
= wm8753_read_reg_cache(codec
, WM8753_CLOCK
) & 0xfff7;
749 if (!freq_in
|| !freq_out
) {
751 wm8753_write(codec
, WM8753_PLL1CTL1
+ offset
, 0x0026);
752 wm8753_write(codec
, WM8753_CLOCK
, reg
);
756 struct _pll_div pll_div
;
758 pll_factors(&pll_div
, freq_out
* 8, freq_in
);
760 /* set up N and K PLL divisor ratios */
761 /* bits 8:5 = PLL_N, bits 3:0 = PLL_K[21:18] */
762 value
= (pll_div
.n
<< 5) + ((pll_div
.k
& 0x3c0000) >> 18);
763 wm8753_write(codec
, WM8753_PLL1CTL2
+ offset
, value
);
765 /* bits 8:0 = PLL_K[17:9] */
766 value
= (pll_div
.k
& 0x03fe00) >> 9;
767 wm8753_write(codec
, WM8753_PLL1CTL3
+ offset
, value
);
769 /* bits 8:0 = PLL_K[8:0] */
770 value
= pll_div
.k
& 0x0001ff;
771 wm8753_write(codec
, WM8753_PLL1CTL4
+ offset
, value
);
773 /* set PLL as input and enable */
774 wm8753_write(codec
, WM8753_PLL1CTL1
+ offset
, 0x0027 |
775 (pll_div
.div2
<< 3));
776 wm8753_write(codec
, WM8753_CLOCK
, reg
| enable
);
788 /* codec hifi mclk (after PLL) clock divider coefficients */
789 static const struct _coeff_div coeff_div
[] = {
791 {12288000, 8000, 0x6, 0x0},
792 {11289600, 8000, 0x16, 0x0},
793 {18432000, 8000, 0x7, 0x0},
794 {16934400, 8000, 0x17, 0x0},
795 {12000000, 8000, 0x6, 0x1},
798 {11289600, 11025, 0x18, 0x0},
799 {16934400, 11025, 0x19, 0x0},
800 {12000000, 11025, 0x19, 0x1},
803 {12288000, 16000, 0xa, 0x0},
804 {18432000, 16000, 0xb, 0x0},
805 {12000000, 16000, 0xa, 0x1},
808 {11289600, 22050, 0x1a, 0x0},
809 {16934400, 22050, 0x1b, 0x0},
810 {12000000, 22050, 0x1b, 0x1},
813 {12288000, 32000, 0xc, 0x0},
814 {18432000, 32000, 0xd, 0x0},
815 {12000000, 32000, 0xa, 0x1},
818 {11289600, 44100, 0x10, 0x0},
819 {16934400, 44100, 0x11, 0x0},
820 {12000000, 44100, 0x11, 0x1},
823 {12288000, 48000, 0x0, 0x0},
824 {18432000, 48000, 0x1, 0x0},
825 {12000000, 48000, 0x0, 0x1},
828 {11289600, 88200, 0x1e, 0x0},
829 {16934400, 88200, 0x1f, 0x0},
830 {12000000, 88200, 0x1f, 0x1},
833 {12288000, 96000, 0xe, 0x0},
834 {18432000, 96000, 0xf, 0x0},
835 {12000000, 96000, 0xe, 0x1},
838 static int get_coeff(int mclk
, int rate
)
842 for (i
= 0; i
< ARRAY_SIZE(coeff_div
); i
++) {
843 if (coeff_div
[i
].rate
== rate
&& coeff_div
[i
].mclk
== mclk
)
850 * Clock after PLL and dividers
852 static int wm8753_set_dai_sysclk(struct snd_soc_dai
*codec_dai
,
853 int clk_id
, unsigned int freq
, int dir
)
855 struct snd_soc_codec
*codec
= codec_dai
->codec
;
856 struct wm8753_priv
*wm8753
= snd_soc_codec_get_drvdata(codec
);
864 if (clk_id
== WM8753_MCLK
) {
865 wm8753
->sysclk
= freq
;
867 } else if (clk_id
== WM8753_PCMCLK
) {
868 wm8753
->pcmclk
= freq
;
877 * Set's ADC and Voice DAC format.
879 static int wm8753_vdac_adc_set_dai_fmt(struct snd_soc_dai
*codec_dai
,
882 struct snd_soc_codec
*codec
= codec_dai
->codec
;
883 u16 voice
= wm8753_read_reg_cache(codec
, WM8753_PCM
) & 0x01ec;
885 /* interface format */
886 switch (fmt
& SND_SOC_DAIFMT_FORMAT_MASK
) {
887 case SND_SOC_DAIFMT_I2S
:
890 case SND_SOC_DAIFMT_RIGHT_J
:
892 case SND_SOC_DAIFMT_LEFT_J
:
895 case SND_SOC_DAIFMT_DSP_A
:
898 case SND_SOC_DAIFMT_DSP_B
:
905 wm8753_write(codec
, WM8753_PCM
, voice
);
909 static int wm8753_pcm_startup(struct snd_pcm_substream
*substream
,
910 struct snd_soc_dai
*dai
)
912 wm8753_set_dai_mode(dai
->codec
, dai
, 0);
917 * Set PCM DAI bit size and sample rate.
919 static int wm8753_pcm_hw_params(struct snd_pcm_substream
*substream
,
920 struct snd_pcm_hw_params
*params
,
921 struct snd_soc_dai
*dai
)
923 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
924 struct snd_soc_codec
*codec
= rtd
->codec
;
925 struct wm8753_priv
*wm8753
= snd_soc_codec_get_drvdata(codec
);
926 u16 voice
= wm8753_read_reg_cache(codec
, WM8753_PCM
) & 0x01f3;
927 u16 srate
= wm8753_read_reg_cache(codec
, WM8753_SRATE1
) & 0x017f;
930 switch (params_format(params
)) {
931 case SNDRV_PCM_FORMAT_S16_LE
:
933 case SNDRV_PCM_FORMAT_S20_3LE
:
936 case SNDRV_PCM_FORMAT_S24_LE
:
939 case SNDRV_PCM_FORMAT_S32_LE
:
945 if (params_rate(params
) * 384 == wm8753
->pcmclk
)
947 wm8753_write(codec
, WM8753_SRATE1
, srate
);
949 wm8753_write(codec
, WM8753_PCM
, voice
);
954 * Set's PCM dai fmt and BCLK.
956 static int wm8753_pcm_set_dai_fmt(struct snd_soc_dai
*codec_dai
,
959 struct snd_soc_codec
*codec
= codec_dai
->codec
;
962 voice
= wm8753_read_reg_cache(codec
, WM8753_PCM
) & 0x011f;
963 ioctl
= wm8753_read_reg_cache(codec
, WM8753_IOCTL
) & 0x015d;
965 /* set master/slave audio interface */
966 switch (fmt
& SND_SOC_DAIFMT_MASTER_MASK
) {
967 case SND_SOC_DAIFMT_CBS_CFS
:
969 case SND_SOC_DAIFMT_CBM_CFM
:
971 case SND_SOC_DAIFMT_CBM_CFS
:
978 /* clock inversion */
979 switch (fmt
& SND_SOC_DAIFMT_FORMAT_MASK
) {
980 case SND_SOC_DAIFMT_DSP_A
:
981 case SND_SOC_DAIFMT_DSP_B
:
982 /* frame inversion not valid for DSP modes */
983 switch (fmt
& SND_SOC_DAIFMT_INV_MASK
) {
984 case SND_SOC_DAIFMT_NB_NF
:
986 case SND_SOC_DAIFMT_IB_NF
:
993 case SND_SOC_DAIFMT_I2S
:
994 case SND_SOC_DAIFMT_RIGHT_J
:
995 case SND_SOC_DAIFMT_LEFT_J
:
997 switch (fmt
& SND_SOC_DAIFMT_INV_MASK
) {
998 case SND_SOC_DAIFMT_NB_NF
:
1000 case SND_SOC_DAIFMT_IB_IF
:
1003 case SND_SOC_DAIFMT_IB_NF
:
1006 case SND_SOC_DAIFMT_NB_IF
:
1017 wm8753_write(codec
, WM8753_PCM
, voice
);
1018 wm8753_write(codec
, WM8753_IOCTL
, ioctl
);
1022 static int wm8753_set_dai_clkdiv(struct snd_soc_dai
*codec_dai
,
1023 int div_id
, int div
)
1025 struct snd_soc_codec
*codec
= codec_dai
->codec
;
1030 reg
= wm8753_read_reg_cache(codec
, WM8753_CLOCK
) & 0x003f;
1031 wm8753_write(codec
, WM8753_CLOCK
, reg
| div
);
1033 case WM8753_BCLKDIV
:
1034 reg
= wm8753_read_reg_cache(codec
, WM8753_SRATE2
) & 0x01c7;
1035 wm8753_write(codec
, WM8753_SRATE2
, reg
| div
);
1037 case WM8753_VXCLKDIV
:
1038 reg
= wm8753_read_reg_cache(codec
, WM8753_SRATE2
) & 0x003f;
1039 wm8753_write(codec
, WM8753_SRATE2
, reg
| div
);
1048 * Set's HiFi DAC format.
1050 static int wm8753_hdac_set_dai_fmt(struct snd_soc_dai
*codec_dai
,
1053 struct snd_soc_codec
*codec
= codec_dai
->codec
;
1054 u16 hifi
= wm8753_read_reg_cache(codec
, WM8753_HIFI
) & 0x01e0;
1056 /* interface format */
1057 switch (fmt
& SND_SOC_DAIFMT_FORMAT_MASK
) {
1058 case SND_SOC_DAIFMT_I2S
:
1061 case SND_SOC_DAIFMT_RIGHT_J
:
1063 case SND_SOC_DAIFMT_LEFT_J
:
1066 case SND_SOC_DAIFMT_DSP_A
:
1069 case SND_SOC_DAIFMT_DSP_B
:
1076 wm8753_write(codec
, WM8753_HIFI
, hifi
);
1081 * Set's I2S DAI format.
1083 static int wm8753_i2s_set_dai_fmt(struct snd_soc_dai
*codec_dai
,
1086 struct snd_soc_codec
*codec
= codec_dai
->codec
;
1089 hifi
= wm8753_read_reg_cache(codec
, WM8753_HIFI
) & 0x011f;
1090 ioctl
= wm8753_read_reg_cache(codec
, WM8753_IOCTL
) & 0x00ae;
1092 /* set master/slave audio interface */
1093 switch (fmt
& SND_SOC_DAIFMT_MASTER_MASK
) {
1094 case SND_SOC_DAIFMT_CBS_CFS
:
1096 case SND_SOC_DAIFMT_CBM_CFM
:
1098 case SND_SOC_DAIFMT_CBM_CFS
:
1105 /* clock inversion */
1106 switch (fmt
& SND_SOC_DAIFMT_FORMAT_MASK
) {
1107 case SND_SOC_DAIFMT_DSP_A
:
1108 case SND_SOC_DAIFMT_DSP_B
:
1109 /* frame inversion not valid for DSP modes */
1110 switch (fmt
& SND_SOC_DAIFMT_INV_MASK
) {
1111 case SND_SOC_DAIFMT_NB_NF
:
1113 case SND_SOC_DAIFMT_IB_NF
:
1120 case SND_SOC_DAIFMT_I2S
:
1121 case SND_SOC_DAIFMT_RIGHT_J
:
1122 case SND_SOC_DAIFMT_LEFT_J
:
1124 switch (fmt
& SND_SOC_DAIFMT_INV_MASK
) {
1125 case SND_SOC_DAIFMT_NB_NF
:
1127 case SND_SOC_DAIFMT_IB_IF
:
1130 case SND_SOC_DAIFMT_IB_NF
:
1133 case SND_SOC_DAIFMT_NB_IF
:
1144 wm8753_write(codec
, WM8753_HIFI
, hifi
);
1145 wm8753_write(codec
, WM8753_IOCTL
, ioctl
);
1149 static int wm8753_i2s_startup(struct snd_pcm_substream
*substream
,
1150 struct snd_soc_dai
*dai
)
1152 wm8753_set_dai_mode(dai
->codec
, dai
, 1);
1157 * Set PCM DAI bit size and sample rate.
1159 static int wm8753_i2s_hw_params(struct snd_pcm_substream
*substream
,
1160 struct snd_pcm_hw_params
*params
,
1161 struct snd_soc_dai
*dai
)
1163 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
1164 struct snd_soc_codec
*codec
= rtd
->codec
;
1165 struct wm8753_priv
*wm8753
= snd_soc_codec_get_drvdata(codec
);
1166 u16 srate
= wm8753_read_reg_cache(codec
, WM8753_SRATE1
) & 0x01c0;
1167 u16 hifi
= wm8753_read_reg_cache(codec
, WM8753_HIFI
) & 0x01f3;
1170 /* is digital filter coefficient valid ? */
1171 coeff
= get_coeff(wm8753
->sysclk
, params_rate(params
));
1173 printk(KERN_ERR
"wm8753 invalid MCLK or rate\n");
1176 wm8753_write(codec
, WM8753_SRATE1
, srate
| (coeff_div
[coeff
].sr
<< 1) |
1177 coeff_div
[coeff
].usb
);
1180 switch (params_format(params
)) {
1181 case SNDRV_PCM_FORMAT_S16_LE
:
1183 case SNDRV_PCM_FORMAT_S20_3LE
:
1186 case SNDRV_PCM_FORMAT_S24_LE
:
1189 case SNDRV_PCM_FORMAT_S32_LE
:
1194 wm8753_write(codec
, WM8753_HIFI
, hifi
);
1198 static int wm8753_mode1v_set_dai_fmt(struct snd_soc_dai
*codec_dai
,
1201 struct snd_soc_codec
*codec
= codec_dai
->codec
;
1204 /* set clk source as pcmclk */
1205 clock
= wm8753_read_reg_cache(codec
, WM8753_CLOCK
) & 0xfffb;
1206 wm8753_write(codec
, WM8753_CLOCK
, clock
);
1208 if (wm8753_vdac_adc_set_dai_fmt(codec_dai
, fmt
) < 0)
1210 return wm8753_pcm_set_dai_fmt(codec_dai
, fmt
);
1213 static int wm8753_mode1h_set_dai_fmt(struct snd_soc_dai
*codec_dai
,
1216 if (wm8753_hdac_set_dai_fmt(codec_dai
, fmt
) < 0)
1218 return wm8753_i2s_set_dai_fmt(codec_dai
, fmt
);
1221 static int wm8753_mode2_set_dai_fmt(struct snd_soc_dai
*codec_dai
,
1224 struct snd_soc_codec
*codec
= codec_dai
->codec
;
1227 /* set clk source as pcmclk */
1228 clock
= wm8753_read_reg_cache(codec
, WM8753_CLOCK
) & 0xfffb;
1229 wm8753_write(codec
, WM8753_CLOCK
, clock
);
1231 if (wm8753_vdac_adc_set_dai_fmt(codec_dai
, fmt
) < 0)
1233 return wm8753_i2s_set_dai_fmt(codec_dai
, fmt
);
1236 static int wm8753_mode3_4_set_dai_fmt(struct snd_soc_dai
*codec_dai
,
1239 struct snd_soc_codec
*codec
= codec_dai
->codec
;
1242 /* set clk source as mclk */
1243 clock
= wm8753_read_reg_cache(codec
, WM8753_CLOCK
) & 0xfffb;
1244 wm8753_write(codec
, WM8753_CLOCK
, clock
| 0x4);
1246 if (wm8753_hdac_set_dai_fmt(codec_dai
, fmt
) < 0)
1248 if (wm8753_vdac_adc_set_dai_fmt(codec_dai
, fmt
) < 0)
1250 return wm8753_i2s_set_dai_fmt(codec_dai
, fmt
);
1253 static int wm8753_mute(struct snd_soc_dai
*dai
, int mute
)
1255 struct snd_soc_codec
*codec
= dai
->codec
;
1256 u16 mute_reg
= wm8753_read_reg_cache(codec
, WM8753_DAC
) & 0xfff7;
1257 struct wm8753_priv
*wm8753
= snd_soc_codec_get_drvdata(codec
);
1259 /* the digital mute covers the HiFi and Voice DAC's on the WM8753.
1260 * make sure we check if they are not both active when we mute */
1261 if (mute
&& wm8753
->dai_func
== 1) {
1263 wm8753_write(codec
, WM8753_DAC
, mute_reg
| 0x8);
1266 wm8753_write(codec
, WM8753_DAC
, mute_reg
| 0x8);
1268 wm8753_write(codec
, WM8753_DAC
, mute_reg
);
1274 static int wm8753_set_bias_level(struct snd_soc_codec
*codec
,
1275 enum snd_soc_bias_level level
)
1277 u16 pwr_reg
= wm8753_read_reg_cache(codec
, WM8753_PWR1
) & 0xfe3e;
1280 case SND_SOC_BIAS_ON
:
1281 /* set vmid to 50k and unmute dac */
1282 wm8753_write(codec
, WM8753_PWR1
, pwr_reg
| 0x00c0);
1284 case SND_SOC_BIAS_PREPARE
:
1285 /* set vmid to 5k for quick power up */
1286 wm8753_write(codec
, WM8753_PWR1
, pwr_reg
| 0x01c1);
1288 case SND_SOC_BIAS_STANDBY
:
1289 /* mute dac and set vmid to 500k, enable VREF */
1290 wm8753_write(codec
, WM8753_PWR1
, pwr_reg
| 0x0141);
1292 case SND_SOC_BIAS_OFF
:
1293 wm8753_write(codec
, WM8753_PWR1
, 0x0001);
1296 codec
->bias_level
= level
;
1300 #define WM8753_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
1301 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 |\
1302 SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 |\
1303 SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000)
1305 #define WM8753_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
1306 SNDRV_PCM_FMTBIT_S24_LE)
1309 * The WM8753 supports upto 4 different and mutually exclusive DAI
1310 * configurations. This gives 2 PCM's available for use, hifi and voice.
1311 * NOTE: The Voice PCM cannot play or capture audio to the CPU as it's DAI
1312 * is connected between the wm8753 and a BT codec or GSM modem.
1314 * 1. Voice over PCM DAI - HIFI DAC over HIFI DAI
1315 * 2. Voice over HIFI DAI - HIFI disabled
1316 * 3. Voice disabled - HIFI over HIFI
1317 * 4. Voice disabled - HIFI over HIFI, uses voice DAI LRC for capture
1319 static struct snd_soc_dai_ops wm8753_dai_ops_hifi_mode1
= {
1320 .startup
= wm8753_i2s_startup
,
1321 .hw_params
= wm8753_i2s_hw_params
,
1322 .digital_mute
= wm8753_mute
,
1323 .set_fmt
= wm8753_mode1h_set_dai_fmt
,
1324 .set_clkdiv
= wm8753_set_dai_clkdiv
,
1325 .set_pll
= wm8753_set_dai_pll
,
1326 .set_sysclk
= wm8753_set_dai_sysclk
,
1329 static struct snd_soc_dai_ops wm8753_dai_ops_voice_mode1
= {
1330 .startup
= wm8753_pcm_startup
,
1331 .hw_params
= wm8753_pcm_hw_params
,
1332 .digital_mute
= wm8753_mute
,
1333 .set_fmt
= wm8753_mode1v_set_dai_fmt
,
1334 .set_clkdiv
= wm8753_set_dai_clkdiv
,
1335 .set_pll
= wm8753_set_dai_pll
,
1336 .set_sysclk
= wm8753_set_dai_sysclk
,
1339 static struct snd_soc_dai_ops wm8753_dai_ops_voice_mode2
= {
1340 .startup
= wm8753_pcm_startup
,
1341 .hw_params
= wm8753_pcm_hw_params
,
1342 .digital_mute
= wm8753_mute
,
1343 .set_fmt
= wm8753_mode2_set_dai_fmt
,
1344 .set_clkdiv
= wm8753_set_dai_clkdiv
,
1345 .set_pll
= wm8753_set_dai_pll
,
1346 .set_sysclk
= wm8753_set_dai_sysclk
,
1349 static struct snd_soc_dai_ops wm8753_dai_ops_hifi_mode3
= {
1350 .startup
= wm8753_i2s_startup
,
1351 .hw_params
= wm8753_i2s_hw_params
,
1352 .digital_mute
= wm8753_mute
,
1353 .set_fmt
= wm8753_mode3_4_set_dai_fmt
,
1354 .set_clkdiv
= wm8753_set_dai_clkdiv
,
1355 .set_pll
= wm8753_set_dai_pll
,
1356 .set_sysclk
= wm8753_set_dai_sysclk
,
1359 static struct snd_soc_dai_ops wm8753_dai_ops_hifi_mode4
= {
1360 .startup
= wm8753_i2s_startup
,
1361 .hw_params
= wm8753_i2s_hw_params
,
1362 .digital_mute
= wm8753_mute
,
1363 .set_fmt
= wm8753_mode3_4_set_dai_fmt
,
1364 .set_clkdiv
= wm8753_set_dai_clkdiv
,
1365 .set_pll
= wm8753_set_dai_pll
,
1366 .set_sysclk
= wm8753_set_dai_sysclk
,
1369 static struct snd_soc_dai_driver wm8753_all_dai
[] = {
1370 /* DAI HiFi mode 1 */
1371 { .name
= "wm8753-hifi",
1373 .stream_name
= "HiFi Playback",
1376 .rates
= WM8753_RATES
,
1377 .formats
= WM8753_FORMATS
},
1378 .capture
= { /* dummy for fast DAI switching */
1379 .stream_name
= "Capture",
1382 .rates
= WM8753_RATES
,
1383 .formats
= WM8753_FORMATS
},
1384 .ops
= &wm8753_dai_ops_hifi_mode1
,
1386 /* DAI Voice mode 1 */
1387 { .name
= "wm8753-voice",
1389 .stream_name
= "Voice Playback",
1392 .rates
= WM8753_RATES
,
1393 .formats
= WM8753_FORMATS
,},
1395 .stream_name
= "Capture",
1398 .rates
= WM8753_RATES
,
1399 .formats
= WM8753_FORMATS
,},
1400 .ops
= &wm8753_dai_ops_voice_mode1
,
1402 /* DAI HiFi mode 2 - dummy */
1403 { .name
= "wm8753-hifi",
1405 /* DAI Voice mode 2 */
1406 { .name
= "wm8753-voice",
1408 .stream_name
= "Voice Playback",
1411 .rates
= WM8753_RATES
,
1412 .formats
= WM8753_FORMATS
,},
1414 .stream_name
= "Capture",
1417 .rates
= WM8753_RATES
,
1418 .formats
= WM8753_FORMATS
,},
1419 .ops
= &wm8753_dai_ops_voice_mode2
,
1421 /* DAI HiFi mode 3 */
1422 { .name
= "wm8753-hifi",
1424 .stream_name
= "HiFi Playback",
1427 .rates
= WM8753_RATES
,
1428 .formats
= WM8753_FORMATS
,},
1430 .stream_name
= "Capture",
1433 .rates
= WM8753_RATES
,
1434 .formats
= WM8753_FORMATS
,},
1435 .ops
= &wm8753_dai_ops_hifi_mode3
,
1437 /* DAI Voice mode 3 - dummy */
1438 { .name
= "wm8753-voice",
1440 /* DAI HiFi mode 4 */
1441 { .name
= "wm8753-hifi",
1443 .stream_name
= "HiFi Playback",
1446 .rates
= WM8753_RATES
,
1447 .formats
= WM8753_FORMATS
,},
1449 .stream_name
= "Capture",
1452 .rates
= WM8753_RATES
,
1453 .formats
= WM8753_FORMATS
,},
1454 .ops
= &wm8753_dai_ops_hifi_mode4
,
1456 /* DAI Voice mode 4 - dummy */
1457 { .name
= "wm8753-voice",
1461 static struct snd_soc_dai_driver wm8753_dai
[] = {
1463 .name
= "wm8753-aif0",
1466 .name
= "wm8753-aif1",
1470 static void wm8753_set_dai_mode(struct snd_soc_codec
*codec
,
1471 struct snd_soc_dai
*dai
, unsigned int hifi
)
1473 struct wm8753_priv
*wm8753
= snd_soc_codec_get_drvdata(codec
);
1475 if (wm8753
->dai_func
< 4) {
1477 dai
->driver
= &wm8753_all_dai
[wm8753
->dai_func
<< 1];
1479 dai
->driver
= &wm8753_all_dai
[(wm8753
->dai_func
<< 1) + 1];
1481 wm8753_write(codec
, WM8753_IOCTL
, wm8753
->dai_func
);
1484 static void wm8753_work(struct work_struct
*work
)
1486 struct snd_soc_codec
*codec
=
1487 container_of(work
, struct snd_soc_codec
, delayed_work
.work
);
1488 wm8753_set_bias_level(codec
, codec
->bias_level
);
1491 static int wm8753_suspend(struct snd_soc_codec
*codec
, pm_message_t state
)
1493 wm8753_set_bias_level(codec
, SND_SOC_BIAS_OFF
);
1497 static int wm8753_resume(struct snd_soc_codec
*codec
)
1501 u16
*cache
= codec
->reg_cache
;
1503 /* Sync reg_cache with the hardware */
1504 for (i
= 0; i
< ARRAY_SIZE(wm8753_reg
); i
++) {
1505 if (i
+ 1 == WM8753_RESET
)
1508 /* No point in writing hardware default values back */
1509 if (cache
[i
] == wm8753_reg
[i
])
1512 data
[0] = ((i
+ 1) << 1) | ((cache
[i
] >> 8) & 0x0001);
1513 data
[1] = cache
[i
] & 0x00ff;
1514 codec
->hw_write(codec
->control_data
, data
, 2);
1517 wm8753_set_bias_level(codec
, SND_SOC_BIAS_STANDBY
);
1519 /* charge wm8753 caps */
1520 if (codec
->suspend_bias_level
== SND_SOC_BIAS_ON
) {
1521 wm8753_set_bias_level(codec
, SND_SOC_BIAS_PREPARE
);
1522 codec
->bias_level
= SND_SOC_BIAS_ON
;
1523 schedule_delayed_work(&codec
->delayed_work
,
1524 msecs_to_jiffies(caps_charge
));
1531 * This function forces any delayed work to be queued and run.
1533 static int run_delayed_work(struct delayed_work
*dwork
)
1537 /* cancel any work waiting to be queued. */
1538 ret
= cancel_delayed_work(dwork
);
1540 /* if there was any work waiting then we run it now and
1541 * wait for it's completion */
1543 schedule_delayed_work(dwork
, 0);
1544 flush_scheduled_work();
1549 static int wm8753_probe(struct snd_soc_codec
*codec
)
1551 struct wm8753_priv
*wm8753
= snd_soc_codec_get_drvdata(codec
);
1554 codec
->bias_level
= SND_SOC_BIAS_OFF
,
1555 codec
->control_data
= wm8753
->control_data
;
1556 INIT_DELAYED_WORK(&codec
->delayed_work
, wm8753_work
);
1558 ret
= snd_soc_codec_set_cache_io(codec
, 7, 9, wm8753
->control_type
);
1560 dev_err(codec
->dev
, "Failed to set cache I/O: %d\n", ret
);
1564 ret
= wm8753_reset(codec
);
1566 dev_err(codec
->dev
, "Failed to issue reset: %d\n", ret
);
1570 wm8753_set_bias_level(codec
, SND_SOC_BIAS_STANDBY
);
1571 wm8753
->dai_func
= 0;
1573 /* charge output caps */
1574 wm8753_set_bias_level(codec
, SND_SOC_BIAS_PREPARE
);
1575 schedule_delayed_work(&codec
->delayed_work
,
1576 msecs_to_jiffies(caps_charge
));
1578 /* set the update bits */
1579 reg
= wm8753_read_reg_cache(codec
, WM8753_LDAC
);
1580 wm8753_write(codec
, WM8753_LDAC
, reg
| 0x0100);
1581 reg
= wm8753_read_reg_cache(codec
, WM8753_RDAC
);
1582 wm8753_write(codec
, WM8753_RDAC
, reg
| 0x0100);
1583 reg
= wm8753_read_reg_cache(codec
, WM8753_LADC
);
1584 wm8753_write(codec
, WM8753_LADC
, reg
| 0x0100);
1585 reg
= wm8753_read_reg_cache(codec
, WM8753_RADC
);
1586 wm8753_write(codec
, WM8753_RADC
, reg
| 0x0100);
1587 reg
= wm8753_read_reg_cache(codec
, WM8753_LOUT1V
);
1588 wm8753_write(codec
, WM8753_LOUT1V
, reg
| 0x0100);
1589 reg
= wm8753_read_reg_cache(codec
, WM8753_ROUT1V
);
1590 wm8753_write(codec
, WM8753_ROUT1V
, reg
| 0x0100);
1591 reg
= wm8753_read_reg_cache(codec
, WM8753_LOUT2V
);
1592 wm8753_write(codec
, WM8753_LOUT2V
, reg
| 0x0100);
1593 reg
= wm8753_read_reg_cache(codec
, WM8753_ROUT2V
);
1594 wm8753_write(codec
, WM8753_ROUT2V
, reg
| 0x0100);
1595 reg
= wm8753_read_reg_cache(codec
, WM8753_LINVOL
);
1596 wm8753_write(codec
, WM8753_LINVOL
, reg
| 0x0100);
1597 reg
= wm8753_read_reg_cache(codec
, WM8753_RINVOL
);
1598 wm8753_write(codec
, WM8753_RINVOL
, reg
| 0x0100);
1600 snd_soc_add_controls(codec
, wm8753_snd_controls
,
1601 ARRAY_SIZE(wm8753_snd_controls
));
1602 wm8753_add_widgets(codec
);
1606 run_delayed_work(&codec
->delayed_work
);
1610 /* power down chip */
1611 static int wm8753_remove(struct snd_soc_codec
*codec
)
1613 run_delayed_work(&codec
->delayed_work
);
1614 wm8753_set_bias_level(codec
, SND_SOC_BIAS_OFF
);
1619 static struct snd_soc_codec_driver soc_codec_dev_wm8753
= {
1620 .probe
= wm8753_probe
,
1621 .remove
= wm8753_remove
,
1622 .suspend
= wm8753_suspend
,
1623 .resume
= wm8753_resume
,
1624 .set_bias_level
= wm8753_set_bias_level
,
1625 .reg_cache_size
= sizeof(wm8753_reg
),
1626 .reg_word_size
= sizeof(u16
),
1627 .reg_cache_default
= wm8753_reg
,
1630 #if defined(CONFIG_SPI_MASTER)
1631 static int __devinit
wm8753_spi_probe(struct spi_device
*spi
)
1633 struct wm8753_priv
*wm8753
;
1636 wm8753
= kzalloc(sizeof(struct wm8753_priv
), GFP_KERNEL
);
1640 wm8753
->control_data
= spi
;
1641 wm8753
->control_type
= SND_SOC_SPI
;
1642 spi_set_drvdata(spi
, wm8753
);
1644 ret
= snd_soc_register_codec(&spi
->dev
,
1645 &soc_codec_dev_wm8753
, wm8753_dai
, ARRAY_SIZE(wm8753_dai
));
1651 static int __devexit
wm8753_spi_remove(struct spi_device
*spi
)
1653 snd_soc_unregister_codec(&spi
->dev
);
1654 kfree(spi_get_drvdata(spi
));
1658 static struct spi_driver wm8753_spi_driver
= {
1660 .name
= "wm8753-codec",
1661 .bus
= &spi_bus_type
,
1662 .owner
= THIS_MODULE
,
1664 .probe
= wm8753_spi_probe
,
1665 .remove
= __devexit_p(wm8753_spi_remove
),
1667 #endif /* CONFIG_SPI_MASTER */
1669 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
1670 static __devinit
int wm8753_i2c_probe(struct i2c_client
*i2c
,
1671 const struct i2c_device_id
*id
)
1673 struct wm8753_priv
*wm8753
;
1676 wm8753
= kzalloc(sizeof(struct wm8753_priv
), GFP_KERNEL
);
1680 i2c_set_clientdata(i2c
, wm8753
);
1681 wm8753
->control_data
= i2c
;
1682 wm8753
->control_type
= SND_SOC_I2C
;
1684 ret
= snd_soc_register_codec(&i2c
->dev
,
1685 &soc_codec_dev_wm8753
, wm8753_dai
, ARRAY_SIZE(wm8753_dai
));
1691 static __devexit
int wm8753_i2c_remove(struct i2c_client
*client
)
1693 snd_soc_unregister_codec(&client
->dev
);
1694 kfree(i2c_get_clientdata(client
));
1698 static const struct i2c_device_id wm8753_i2c_id
[] = {
1702 MODULE_DEVICE_TABLE(i2c
, wm8753_i2c_id
);
1704 static struct i2c_driver wm8753_i2c_driver
= {
1706 .name
= "wm8753-codec",
1707 .owner
= THIS_MODULE
,
1709 .probe
= wm8753_i2c_probe
,
1710 .remove
= __devexit_p(wm8753_i2c_remove
),
1711 .id_table
= wm8753_i2c_id
,
1715 static int __init
wm8753_modinit(void)
1718 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
1719 ret
= i2c_add_driver(&wm8753_i2c_driver
);
1721 printk(KERN_ERR
"Failed to register wm8753 I2C driver: %d\n",
1725 #if defined(CONFIG_SPI_MASTER)
1726 ret
= spi_register_driver(&wm8753_spi_driver
);
1728 printk(KERN_ERR
"Failed to register wm8753 SPI driver: %d\n",
1734 module_init(wm8753_modinit
);
1736 static void __exit
wm8753_exit(void)
1738 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
1739 i2c_del_driver(&wm8753_i2c_driver
);
1741 #if defined(CONFIG_SPI_MASTER)
1742 spi_unregister_driver(&wm8753_spi_driver
);
1745 module_exit(wm8753_exit
);
1747 MODULE_DESCRIPTION("ASoC WM8753 driver");
1748 MODULE_AUTHOR("Liam Girdwood");
1749 MODULE_LICENSE("GPL");