2 * wm8988.c -- WM8988 ALSA SoC audio driver
4 * Copyright 2009 Wolfson Microelectronics plc
5 * Copyright 2005 Openedhand Ltd.
7 * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation.
14 #include <linux/module.h>
15 #include <linux/moduleparam.h>
16 #include <linux/init.h>
17 #include <linux/delay.h>
19 #include <linux/i2c.h>
20 #include <linux/spi/spi.h>
21 #include <linux/platform_device.h>
22 #include <sound/core.h>
23 #include <sound/pcm.h>
24 #include <sound/pcm_params.h>
25 #include <sound/tlv.h>
26 #include <sound/soc.h>
27 #include <sound/soc-dapm.h>
28 #include <sound/initval.h>
33 * wm8988 register cache
34 * We can't read the WM8988 register space when we
35 * are using 2 wire for device control, so we cache them instead.
37 static const u16 wm8988_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 struct snd_pcm_hw_constraint_list
*sysclk_constraints
;
56 u16 reg_cache
[WM8988_NUM_REG
];
60 #define wm8988_reset(c) snd_soc_write(c, WM8988_RESET, 0)
66 static const char *bass_boost_txt
[] = {"Linear Control", "Adaptive Boost"};
67 static const struct soc_enum bass_boost
=
68 SOC_ENUM_SINGLE(WM8988_BASS
, 7, 2, bass_boost_txt
);
70 static const char *bass_filter_txt
[] = { "130Hz @ 48kHz", "200Hz @ 48kHz" };
71 static const struct soc_enum bass_filter
=
72 SOC_ENUM_SINGLE(WM8988_BASS
, 6, 2, bass_filter_txt
);
74 static const char *treble_txt
[] = {"8kHz", "4kHz"};
75 static const struct soc_enum treble
=
76 SOC_ENUM_SINGLE(WM8988_TREBLE
, 6, 2, treble_txt
);
78 static const char *stereo_3d_lc_txt
[] = {"200Hz", "500Hz"};
79 static const struct soc_enum stereo_3d_lc
=
80 SOC_ENUM_SINGLE(WM8988_3D
, 5, 2, stereo_3d_lc_txt
);
82 static const char *stereo_3d_uc_txt
[] = {"2.2kHz", "1.5kHz"};
83 static const struct soc_enum stereo_3d_uc
=
84 SOC_ENUM_SINGLE(WM8988_3D
, 6, 2, stereo_3d_uc_txt
);
86 static const char *stereo_3d_func_txt
[] = {"Capture", "Playback"};
87 static const struct soc_enum stereo_3d_func
=
88 SOC_ENUM_SINGLE(WM8988_3D
, 7, 2, stereo_3d_func_txt
);
90 static const char *alc_func_txt
[] = {"Off", "Right", "Left", "Stereo"};
91 static const struct soc_enum alc_func
=
92 SOC_ENUM_SINGLE(WM8988_ALC1
, 7, 4, alc_func_txt
);
94 static const char *ng_type_txt
[] = {"Constant PGA Gain",
96 static const struct soc_enum ng_type
=
97 SOC_ENUM_SINGLE(WM8988_NGATE
, 1, 2, ng_type_txt
);
99 static const char *deemph_txt
[] = {"None", "32Khz", "44.1Khz", "48Khz"};
100 static const struct soc_enum deemph
=
101 SOC_ENUM_SINGLE(WM8988_ADCDAC
, 1, 4, deemph_txt
);
103 static const char *adcpol_txt
[] = {"Normal", "L Invert", "R Invert",
105 static const struct soc_enum adcpol
=
106 SOC_ENUM_SINGLE(WM8988_ADCDAC
, 5, 4, adcpol_txt
);
108 static const DECLARE_TLV_DB_SCALE(pga_tlv
, -1725, 75, 0);
109 static const DECLARE_TLV_DB_SCALE(adc_tlv
, -9750, 50, 1);
110 static const DECLARE_TLV_DB_SCALE(dac_tlv
, -12750, 50, 1);
111 static const DECLARE_TLV_DB_SCALE(out_tlv
, -12100, 100, 1);
112 static const DECLARE_TLV_DB_SCALE(bypass_tlv
, -1500, 300, 0);
114 static const struct snd_kcontrol_new wm8988_snd_controls
[] = {
116 SOC_ENUM("Bass Boost", bass_boost
),
117 SOC_ENUM("Bass Filter", bass_filter
),
118 SOC_SINGLE("Bass Volume", WM8988_BASS
, 0, 15, 1),
120 SOC_SINGLE("Treble Volume", WM8988_TREBLE
, 0, 15, 0),
121 SOC_ENUM("Treble Cut-off", treble
),
123 SOC_SINGLE("3D Switch", WM8988_3D
, 0, 1, 0),
124 SOC_SINGLE("3D Volume", WM8988_3D
, 1, 15, 0),
125 SOC_ENUM("3D Lower Cut-off", stereo_3d_lc
),
126 SOC_ENUM("3D Upper Cut-off", stereo_3d_uc
),
127 SOC_ENUM("3D Mode", stereo_3d_func
),
129 SOC_SINGLE("ALC Capture Target Volume", WM8988_ALC1
, 0, 7, 0),
130 SOC_SINGLE("ALC Capture Max Volume", WM8988_ALC1
, 4, 7, 0),
131 SOC_ENUM("ALC Capture Function", alc_func
),
132 SOC_SINGLE("ALC Capture ZC Switch", WM8988_ALC2
, 7, 1, 0),
133 SOC_SINGLE("ALC Capture Hold Time", WM8988_ALC2
, 0, 15, 0),
134 SOC_SINGLE("ALC Capture Decay Time", WM8988_ALC3
, 4, 15, 0),
135 SOC_SINGLE("ALC Capture Attack Time", WM8988_ALC3
, 0, 15, 0),
136 SOC_SINGLE("ALC Capture NG Threshold", WM8988_NGATE
, 3, 31, 0),
137 SOC_ENUM("ALC Capture NG Type", ng_type
),
138 SOC_SINGLE("ALC Capture NG Switch", WM8988_NGATE
, 0, 1, 0),
140 SOC_SINGLE("ZC Timeout Switch", WM8988_ADCTL1
, 0, 1, 0),
142 SOC_DOUBLE_R_TLV("Capture Digital Volume", WM8988_LADC
, WM8988_RADC
,
144 SOC_DOUBLE_R_TLV("Capture Volume", WM8988_LINVOL
, WM8988_RINVOL
,
146 SOC_DOUBLE_R("Capture ZC Switch", WM8988_LINVOL
, WM8988_RINVOL
, 6, 1, 0),
147 SOC_DOUBLE_R("Capture Switch", WM8988_LINVOL
, WM8988_RINVOL
, 7, 1, 1),
149 SOC_ENUM("Playback De-emphasis", deemph
),
151 SOC_ENUM("Capture Polarity", adcpol
),
152 SOC_SINGLE("Playback 6dB Attenuate", WM8988_ADCDAC
, 7, 1, 0),
153 SOC_SINGLE("Capture 6dB Attenuate", WM8988_ADCDAC
, 8, 1, 0),
155 SOC_DOUBLE_R_TLV("PCM Volume", WM8988_LDAC
, WM8988_RDAC
, 0, 255, 0, dac_tlv
),
157 SOC_SINGLE_TLV("Left Mixer Left Bypass Volume", WM8988_LOUTM1
, 4, 7, 1,
159 SOC_SINGLE_TLV("Left Mixer Right Bypass Volume", WM8988_LOUTM2
, 4, 7, 1,
161 SOC_SINGLE_TLV("Right Mixer Left Bypass Volume", WM8988_ROUTM1
, 4, 7, 1,
163 SOC_SINGLE_TLV("Right Mixer Right Bypass Volume", WM8988_ROUTM2
, 4, 7, 1,
166 SOC_DOUBLE_R("Output 1 Playback ZC Switch", WM8988_LOUT1V
,
167 WM8988_ROUT1V
, 7, 1, 0),
168 SOC_DOUBLE_R_TLV("Output 1 Playback Volume", WM8988_LOUT1V
, WM8988_ROUT1V
,
171 SOC_DOUBLE_R("Output 2 Playback ZC Switch", WM8988_LOUT2V
,
172 WM8988_ROUT2V
, 7, 1, 0),
173 SOC_DOUBLE_R_TLV("Output 2 Playback Volume", WM8988_LOUT2V
, WM8988_ROUT2V
,
182 static int wm8988_lrc_control(struct snd_soc_dapm_widget
*w
,
183 struct snd_kcontrol
*kcontrol
, int event
)
185 struct snd_soc_codec
*codec
= w
->codec
;
186 u16 adctl2
= snd_soc_read(codec
, WM8988_ADCTL2
);
188 /* Use the DAC to gate LRC if active, otherwise use ADC */
189 if (snd_soc_read(codec
, WM8988_PWR2
) & 0x180)
194 return snd_soc_write(codec
, WM8988_ADCTL2
, adctl2
);
197 static const char *wm8988_line_texts
[] = {
198 "Line 1", "Line 2", "PGA", "Differential"};
200 static const unsigned int wm8988_line_values
[] = {
203 static const struct soc_enum wm8988_lline_enum
=
204 SOC_VALUE_ENUM_SINGLE(WM8988_LOUTM1
, 0, 7,
205 ARRAY_SIZE(wm8988_line_texts
),
208 static const struct snd_kcontrol_new wm8988_left_line_controls
=
209 SOC_DAPM_VALUE_ENUM("Route", wm8988_lline_enum
);
211 static const struct soc_enum wm8988_rline_enum
=
212 SOC_VALUE_ENUM_SINGLE(WM8988_ROUTM1
, 0, 7,
213 ARRAY_SIZE(wm8988_line_texts
),
216 static const struct snd_kcontrol_new wm8988_right_line_controls
=
217 SOC_DAPM_VALUE_ENUM("Route", wm8988_lline_enum
);
220 static const struct snd_kcontrol_new wm8988_left_mixer_controls
[] = {
221 SOC_DAPM_SINGLE("Playback Switch", WM8988_LOUTM1
, 8, 1, 0),
222 SOC_DAPM_SINGLE("Left Bypass Switch", WM8988_LOUTM1
, 7, 1, 0),
223 SOC_DAPM_SINGLE("Right Playback Switch", WM8988_LOUTM2
, 8, 1, 0),
224 SOC_DAPM_SINGLE("Right Bypass Switch", WM8988_LOUTM2
, 7, 1, 0),
228 static const struct snd_kcontrol_new wm8988_right_mixer_controls
[] = {
229 SOC_DAPM_SINGLE("Left Playback Switch", WM8988_ROUTM1
, 8, 1, 0),
230 SOC_DAPM_SINGLE("Left Bypass Switch", WM8988_ROUTM1
, 7, 1, 0),
231 SOC_DAPM_SINGLE("Playback Switch", WM8988_ROUTM2
, 8, 1, 0),
232 SOC_DAPM_SINGLE("Right Bypass Switch", WM8988_ROUTM2
, 7, 1, 0),
235 static const char *wm8988_pga_sel
[] = {"Line 1", "Line 2", "Differential"};
236 static const unsigned int wm8988_pga_val
[] = { 0, 1, 3 };
239 static const struct soc_enum wm8988_lpga_enum
=
240 SOC_VALUE_ENUM_SINGLE(WM8988_LADCIN
, 6, 3,
241 ARRAY_SIZE(wm8988_pga_sel
),
244 static const struct snd_kcontrol_new wm8988_left_pga_controls
=
245 SOC_DAPM_VALUE_ENUM("Route", wm8988_lpga_enum
);
248 static const struct soc_enum wm8988_rpga_enum
=
249 SOC_VALUE_ENUM_SINGLE(WM8988_RADCIN
, 6, 3,
250 ARRAY_SIZE(wm8988_pga_sel
),
253 static const struct snd_kcontrol_new wm8988_right_pga_controls
=
254 SOC_DAPM_VALUE_ENUM("Route", wm8988_rpga_enum
);
256 /* Differential Mux */
257 static const char *wm8988_diff_sel
[] = {"Line 1", "Line 2"};
258 static const struct soc_enum diffmux
=
259 SOC_ENUM_SINGLE(WM8988_ADCIN
, 8, 2, wm8988_diff_sel
);
260 static const struct snd_kcontrol_new wm8988_diffmux_controls
=
261 SOC_DAPM_ENUM("Route", diffmux
);
264 static const char *wm8988_mono_mux
[] = {"Stereo", "Mono (Left)",
265 "Mono (Right)", "Digital Mono"};
266 static const struct soc_enum monomux
=
267 SOC_ENUM_SINGLE(WM8988_ADCIN
, 6, 4, wm8988_mono_mux
);
268 static const struct snd_kcontrol_new wm8988_monomux_controls
=
269 SOC_DAPM_ENUM("Route", monomux
);
271 static const struct snd_soc_dapm_widget wm8988_dapm_widgets
[] = {
272 SND_SOC_DAPM_MICBIAS("Mic Bias", WM8988_PWR1
, 1, 0),
274 SND_SOC_DAPM_MUX("Differential Mux", SND_SOC_NOPM
, 0, 0,
275 &wm8988_diffmux_controls
),
276 SND_SOC_DAPM_MUX("Left ADC Mux", SND_SOC_NOPM
, 0, 0,
277 &wm8988_monomux_controls
),
278 SND_SOC_DAPM_MUX("Right ADC Mux", SND_SOC_NOPM
, 0, 0,
279 &wm8988_monomux_controls
),
281 SND_SOC_DAPM_MUX("Left PGA Mux", WM8988_PWR1
, 5, 0,
282 &wm8988_left_pga_controls
),
283 SND_SOC_DAPM_MUX("Right PGA Mux", WM8988_PWR1
, 4, 0,
284 &wm8988_right_pga_controls
),
286 SND_SOC_DAPM_MUX("Left Line Mux", SND_SOC_NOPM
, 0, 0,
287 &wm8988_left_line_controls
),
288 SND_SOC_DAPM_MUX("Right Line Mux", SND_SOC_NOPM
, 0, 0,
289 &wm8988_right_line_controls
),
291 SND_SOC_DAPM_ADC("Right ADC", "Right Capture", WM8988_PWR1
, 2, 0),
292 SND_SOC_DAPM_ADC("Left ADC", "Left Capture", WM8988_PWR1
, 3, 0),
294 SND_SOC_DAPM_DAC("Right DAC", "Right Playback", WM8988_PWR2
, 7, 0),
295 SND_SOC_DAPM_DAC("Left DAC", "Left Playback", WM8988_PWR2
, 8, 0),
297 SND_SOC_DAPM_MIXER("Left Mixer", SND_SOC_NOPM
, 0, 0,
298 &wm8988_left_mixer_controls
[0],
299 ARRAY_SIZE(wm8988_left_mixer_controls
)),
300 SND_SOC_DAPM_MIXER("Right Mixer", SND_SOC_NOPM
, 0, 0,
301 &wm8988_right_mixer_controls
[0],
302 ARRAY_SIZE(wm8988_right_mixer_controls
)),
304 SND_SOC_DAPM_PGA("Right Out 2", WM8988_PWR2
, 3, 0, NULL
, 0),
305 SND_SOC_DAPM_PGA("Left Out 2", WM8988_PWR2
, 4, 0, NULL
, 0),
306 SND_SOC_DAPM_PGA("Right Out 1", WM8988_PWR2
, 5, 0, NULL
, 0),
307 SND_SOC_DAPM_PGA("Left Out 1", WM8988_PWR2
, 6, 0, NULL
, 0),
309 SND_SOC_DAPM_POST("LRC control", wm8988_lrc_control
),
311 SND_SOC_DAPM_OUTPUT("LOUT1"),
312 SND_SOC_DAPM_OUTPUT("ROUT1"),
313 SND_SOC_DAPM_OUTPUT("LOUT2"),
314 SND_SOC_DAPM_OUTPUT("ROUT2"),
315 SND_SOC_DAPM_OUTPUT("VREF"),
317 SND_SOC_DAPM_INPUT("LINPUT1"),
318 SND_SOC_DAPM_INPUT("LINPUT2"),
319 SND_SOC_DAPM_INPUT("RINPUT1"),
320 SND_SOC_DAPM_INPUT("RINPUT2"),
323 static const struct snd_soc_dapm_route audio_map
[] = {
325 { "Left Line Mux", "Line 1", "LINPUT1" },
326 { "Left Line Mux", "Line 2", "LINPUT2" },
327 { "Left Line Mux", "PGA", "Left PGA Mux" },
328 { "Left Line Mux", "Differential", "Differential Mux" },
330 { "Right Line Mux", "Line 1", "RINPUT1" },
331 { "Right Line Mux", "Line 2", "RINPUT2" },
332 { "Right Line Mux", "PGA", "Right PGA Mux" },
333 { "Right Line Mux", "Differential", "Differential Mux" },
335 { "Left PGA Mux", "Line 1", "LINPUT1" },
336 { "Left PGA Mux", "Line 2", "LINPUT2" },
337 { "Left PGA Mux", "Differential", "Differential Mux" },
339 { "Right PGA Mux", "Line 1", "RINPUT1" },
340 { "Right PGA Mux", "Line 2", "RINPUT2" },
341 { "Right PGA Mux", "Differential", "Differential Mux" },
343 { "Differential Mux", "Line 1", "LINPUT1" },
344 { "Differential Mux", "Line 1", "RINPUT1" },
345 { "Differential Mux", "Line 2", "LINPUT2" },
346 { "Differential Mux", "Line 2", "RINPUT2" },
348 { "Left ADC Mux", "Stereo", "Left PGA Mux" },
349 { "Left ADC Mux", "Mono (Left)", "Left PGA Mux" },
350 { "Left ADC Mux", "Digital Mono", "Left PGA Mux" },
352 { "Right ADC Mux", "Stereo", "Right PGA Mux" },
353 { "Right ADC Mux", "Mono (Right)", "Right PGA Mux" },
354 { "Right ADC Mux", "Digital Mono", "Right PGA Mux" },
356 { "Left ADC", NULL
, "Left ADC Mux" },
357 { "Right ADC", NULL
, "Right ADC Mux" },
359 { "Left Line Mux", "Line 1", "LINPUT1" },
360 { "Left Line Mux", "Line 2", "LINPUT2" },
361 { "Left Line Mux", "PGA", "Left PGA Mux" },
362 { "Left Line Mux", "Differential", "Differential Mux" },
364 { "Right Line Mux", "Line 1", "RINPUT1" },
365 { "Right Line Mux", "Line 2", "RINPUT2" },
366 { "Right Line Mux", "PGA", "Right PGA Mux" },
367 { "Right Line Mux", "Differential", "Differential Mux" },
369 { "Left Mixer", "Playback Switch", "Left DAC" },
370 { "Left Mixer", "Left Bypass Switch", "Left Line Mux" },
371 { "Left Mixer", "Right Playback Switch", "Right DAC" },
372 { "Left Mixer", "Right Bypass Switch", "Right Line Mux" },
374 { "Right Mixer", "Left Playback Switch", "Left DAC" },
375 { "Right Mixer", "Left Bypass Switch", "Left Line Mux" },
376 { "Right Mixer", "Playback Switch", "Right DAC" },
377 { "Right Mixer", "Right Bypass Switch", "Right Line Mux" },
379 { "Left Out 1", NULL
, "Left Mixer" },
380 { "LOUT1", NULL
, "Left Out 1" },
381 { "Right Out 1", NULL
, "Right Mixer" },
382 { "ROUT1", NULL
, "Right Out 1" },
384 { "Left Out 2", NULL
, "Left Mixer" },
385 { "LOUT2", NULL
, "Left Out 2" },
386 { "Right Out 2", NULL
, "Right Mixer" },
387 { "ROUT2", NULL
, "Right Out 2" },
398 /* codec hifi mclk clock divider coefficients */
399 static const struct _coeff_div coeff_div
[] = {
401 {12288000, 8000, 1536, 0x6, 0x0},
402 {11289600, 8000, 1408, 0x16, 0x0},
403 {18432000, 8000, 2304, 0x7, 0x0},
404 {16934400, 8000, 2112, 0x17, 0x0},
405 {12000000, 8000, 1500, 0x6, 0x1},
408 {11289600, 11025, 1024, 0x18, 0x0},
409 {16934400, 11025, 1536, 0x19, 0x0},
410 {12000000, 11025, 1088, 0x19, 0x1},
413 {12288000, 16000, 768, 0xa, 0x0},
414 {18432000, 16000, 1152, 0xb, 0x0},
415 {12000000, 16000, 750, 0xa, 0x1},
418 {11289600, 22050, 512, 0x1a, 0x0},
419 {16934400, 22050, 768, 0x1b, 0x0},
420 {12000000, 22050, 544, 0x1b, 0x1},
423 {12288000, 32000, 384, 0xc, 0x0},
424 {18432000, 32000, 576, 0xd, 0x0},
425 {12000000, 32000, 375, 0xa, 0x1},
428 {11289600, 44100, 256, 0x10, 0x0},
429 {16934400, 44100, 384, 0x11, 0x0},
430 {12000000, 44100, 272, 0x11, 0x1},
433 {12288000, 48000, 256, 0x0, 0x0},
434 {18432000, 48000, 384, 0x1, 0x0},
435 {12000000, 48000, 250, 0x0, 0x1},
438 {11289600, 88200, 128, 0x1e, 0x0},
439 {16934400, 88200, 192, 0x1f, 0x0},
440 {12000000, 88200, 136, 0x1f, 0x1},
443 {12288000, 96000, 128, 0xe, 0x0},
444 {18432000, 96000, 192, 0xf, 0x0},
445 {12000000, 96000, 125, 0xe, 0x1},
448 static inline int get_coeff(int mclk
, int rate
)
452 for (i
= 0; i
< ARRAY_SIZE(coeff_div
); i
++) {
453 if (coeff_div
[i
].rate
== rate
&& coeff_div
[i
].mclk
== mclk
)
460 /* The set of rates we can generate from the above for each SYSCLK */
462 static unsigned int rates_12288
[] = {
463 8000, 12000, 16000, 24000, 24000, 32000, 48000, 96000,
466 static struct snd_pcm_hw_constraint_list constraints_12288
= {
467 .count
= ARRAY_SIZE(rates_12288
),
471 static unsigned int rates_112896
[] = {
472 8000, 11025, 22050, 44100,
475 static struct snd_pcm_hw_constraint_list constraints_112896
= {
476 .count
= ARRAY_SIZE(rates_112896
),
477 .list
= rates_112896
,
480 static unsigned int rates_12
[] = {
481 8000, 11025, 12000, 16000, 22050, 2400, 32000, 41100, 48000,
485 static struct snd_pcm_hw_constraint_list constraints_12
= {
486 .count
= ARRAY_SIZE(rates_12
),
491 * Note that this should be called from init rather than from hw_params.
493 static int wm8988_set_dai_sysclk(struct snd_soc_dai
*codec_dai
,
494 int clk_id
, unsigned int freq
, int dir
)
496 struct snd_soc_codec
*codec
= codec_dai
->codec
;
497 struct wm8988_priv
*wm8988
= codec
->private_data
;
504 wm8988
->sysclk_constraints
= &constraints_112896
;
505 wm8988
->sysclk
= freq
;
512 wm8988
->sysclk_constraints
= &constraints_12288
;
513 wm8988
->sysclk
= freq
;
518 wm8988
->sysclk_constraints
= &constraints_12
;
519 wm8988
->sysclk
= freq
;
525 static int wm8988_set_dai_fmt(struct snd_soc_dai
*codec_dai
,
528 struct snd_soc_codec
*codec
= codec_dai
->codec
;
531 /* set master/slave audio interface */
532 switch (fmt
& SND_SOC_DAIFMT_MASTER_MASK
) {
533 case SND_SOC_DAIFMT_CBM_CFM
:
536 case SND_SOC_DAIFMT_CBS_CFS
:
542 /* interface format */
543 switch (fmt
& SND_SOC_DAIFMT_FORMAT_MASK
) {
544 case SND_SOC_DAIFMT_I2S
:
547 case SND_SOC_DAIFMT_RIGHT_J
:
549 case SND_SOC_DAIFMT_LEFT_J
:
552 case SND_SOC_DAIFMT_DSP_A
:
555 case SND_SOC_DAIFMT_DSP_B
:
562 /* clock inversion */
563 switch (fmt
& SND_SOC_DAIFMT_INV_MASK
) {
564 case SND_SOC_DAIFMT_NB_NF
:
566 case SND_SOC_DAIFMT_IB_IF
:
569 case SND_SOC_DAIFMT_IB_NF
:
572 case SND_SOC_DAIFMT_NB_IF
:
579 snd_soc_write(codec
, WM8988_IFACE
, iface
);
583 static int wm8988_pcm_startup(struct snd_pcm_substream
*substream
,
584 struct snd_soc_dai
*dai
)
586 struct snd_soc_codec
*codec
= dai
->codec
;
587 struct wm8988_priv
*wm8988
= codec
->private_data
;
589 /* The set of sample rates that can be supported depends on the
590 * MCLK supplied to the CODEC - enforce this.
592 if (!wm8988
->sysclk
) {
594 "No MCLK configured, call set_sysclk() on init\n");
598 snd_pcm_hw_constraint_list(substream
->runtime
, 0,
599 SNDRV_PCM_HW_PARAM_RATE
,
600 wm8988
->sysclk_constraints
);
605 static int wm8988_pcm_hw_params(struct snd_pcm_substream
*substream
,
606 struct snd_pcm_hw_params
*params
,
607 struct snd_soc_dai
*dai
)
609 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
610 struct snd_soc_device
*socdev
= rtd
->socdev
;
611 struct snd_soc_codec
*codec
= socdev
->card
->codec
;
612 struct wm8988_priv
*wm8988
= codec
->private_data
;
613 u16 iface
= snd_soc_read(codec
, WM8988_IFACE
) & 0x1f3;
614 u16 srate
= snd_soc_read(codec
, WM8988_SRATE
) & 0x180;
617 coeff
= get_coeff(wm8988
->sysclk
, params_rate(params
));
619 coeff
= get_coeff(wm8988
->sysclk
/ 2, params_rate(params
));
624 "Unable to configure sample rate %dHz with %dHz MCLK\n",
625 params_rate(params
), wm8988
->sysclk
);
630 switch (params_format(params
)) {
631 case SNDRV_PCM_FORMAT_S16_LE
:
633 case SNDRV_PCM_FORMAT_S20_3LE
:
636 case SNDRV_PCM_FORMAT_S24_LE
:
639 case SNDRV_PCM_FORMAT_S32_LE
:
644 /* set iface & srate */
645 snd_soc_write(codec
, WM8988_IFACE
, iface
);
647 snd_soc_write(codec
, WM8988_SRATE
, srate
|
648 (coeff_div
[coeff
].sr
<< 1) | coeff_div
[coeff
].usb
);
653 static int wm8988_mute(struct snd_soc_dai
*dai
, int mute
)
655 struct snd_soc_codec
*codec
= dai
->codec
;
656 u16 mute_reg
= snd_soc_read(codec
, WM8988_ADCDAC
) & 0xfff7;
659 snd_soc_write(codec
, WM8988_ADCDAC
, mute_reg
| 0x8);
661 snd_soc_write(codec
, WM8988_ADCDAC
, mute_reg
);
665 static int wm8988_set_bias_level(struct snd_soc_codec
*codec
,
666 enum snd_soc_bias_level level
)
668 u16 pwr_reg
= snd_soc_read(codec
, WM8988_PWR1
) & ~0x1c1;
671 case SND_SOC_BIAS_ON
:
674 case SND_SOC_BIAS_PREPARE
:
675 /* VREF, VMID=2x50k, digital enabled */
676 snd_soc_write(codec
, WM8988_PWR1
, pwr_reg
| 0x00c0);
679 case SND_SOC_BIAS_STANDBY
:
680 if (codec
->bias_level
== SND_SOC_BIAS_OFF
) {
681 /* VREF, VMID=2x5k */
682 snd_soc_write(codec
, WM8988_PWR1
, pwr_reg
| 0x1c1);
688 /* VREF, VMID=2*500k, digital stopped */
689 snd_soc_write(codec
, WM8988_PWR1
, pwr_reg
| 0x0141);
692 case SND_SOC_BIAS_OFF
:
693 snd_soc_write(codec
, WM8988_PWR1
, 0x0000);
696 codec
->bias_level
= level
;
700 #define WM8988_RATES SNDRV_PCM_RATE_8000_96000
702 #define WM8988_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
703 SNDRV_PCM_FMTBIT_S24_LE)
705 static struct snd_soc_dai_ops wm8988_ops
= {
706 .startup
= wm8988_pcm_startup
,
707 .hw_params
= wm8988_pcm_hw_params
,
708 .set_fmt
= wm8988_set_dai_fmt
,
709 .set_sysclk
= wm8988_set_dai_sysclk
,
710 .digital_mute
= wm8988_mute
,
713 struct snd_soc_dai wm8988_dai
= {
716 .stream_name
= "Playback",
719 .rates
= WM8988_RATES
,
720 .formats
= WM8988_FORMATS
,
723 .stream_name
= "Capture",
726 .rates
= WM8988_RATES
,
727 .formats
= WM8988_FORMATS
,
730 .symmetric_rates
= 1,
732 EXPORT_SYMBOL_GPL(wm8988_dai
);
734 static int wm8988_suspend(struct platform_device
*pdev
, pm_message_t state
)
736 struct snd_soc_device
*socdev
= platform_get_drvdata(pdev
);
737 struct snd_soc_codec
*codec
= socdev
->card
->codec
;
739 wm8988_set_bias_level(codec
, SND_SOC_BIAS_OFF
);
743 static int wm8988_resume(struct platform_device
*pdev
)
745 struct snd_soc_device
*socdev
= platform_get_drvdata(pdev
);
746 struct snd_soc_codec
*codec
= socdev
->card
->codec
;
749 u16
*cache
= codec
->reg_cache
;
751 /* Sync reg_cache with the hardware */
752 for (i
= 0; i
< WM8988_NUM_REG
; i
++) {
753 if (i
== WM8988_RESET
)
755 data
[0] = (i
<< 1) | ((cache
[i
] >> 8) & 0x0001);
756 data
[1] = cache
[i
] & 0x00ff;
757 codec
->hw_write(codec
->control_data
, data
, 2);
760 wm8988_set_bias_level(codec
, SND_SOC_BIAS_STANDBY
);
765 static struct snd_soc_codec
*wm8988_codec
;
767 static int wm8988_probe(struct platform_device
*pdev
)
769 struct snd_soc_device
*socdev
= platform_get_drvdata(pdev
);
770 struct snd_soc_codec
*codec
;
773 if (wm8988_codec
== NULL
) {
774 dev_err(&pdev
->dev
, "Codec device not registered\n");
778 socdev
->card
->codec
= wm8988_codec
;
779 codec
= wm8988_codec
;
782 ret
= snd_soc_new_pcms(socdev
, SNDRV_DEFAULT_IDX1
, SNDRV_DEFAULT_STR1
);
784 dev_err(codec
->dev
, "failed to create pcms: %d\n", ret
);
788 snd_soc_add_controls(codec
, wm8988_snd_controls
,
789 ARRAY_SIZE(wm8988_snd_controls
));
790 snd_soc_dapm_new_controls(codec
, wm8988_dapm_widgets
,
791 ARRAY_SIZE(wm8988_dapm_widgets
));
792 snd_soc_dapm_add_routes(codec
, audio_map
, ARRAY_SIZE(audio_map
));
793 snd_soc_dapm_new_widgets(codec
);
795 ret
= snd_soc_init_card(socdev
);
797 dev_err(codec
->dev
, "failed to register card: %d\n", ret
);
804 snd_soc_free_pcms(socdev
);
805 snd_soc_dapm_free(socdev
);
810 static int wm8988_remove(struct platform_device
*pdev
)
812 struct snd_soc_device
*socdev
= platform_get_drvdata(pdev
);
814 snd_soc_free_pcms(socdev
);
815 snd_soc_dapm_free(socdev
);
820 struct snd_soc_codec_device soc_codec_dev_wm8988
= {
821 .probe
= wm8988_probe
,
822 .remove
= wm8988_remove
,
823 .suspend
= wm8988_suspend
,
824 .resume
= wm8988_resume
,
826 EXPORT_SYMBOL_GPL(soc_codec_dev_wm8988
);
828 static int wm8988_register(struct wm8988_priv
*wm8988
,
829 enum snd_soc_control_type control
)
831 struct snd_soc_codec
*codec
= &wm8988
->codec
;
836 dev_err(codec
->dev
, "Another WM8988 is registered\n");
841 mutex_init(&codec
->mutex
);
842 INIT_LIST_HEAD(&codec
->dapm_widgets
);
843 INIT_LIST_HEAD(&codec
->dapm_paths
);
845 codec
->private_data
= wm8988
;
846 codec
->name
= "WM8988";
847 codec
->owner
= THIS_MODULE
;
848 codec
->dai
= &wm8988_dai
;
850 codec
->reg_cache_size
= ARRAY_SIZE(wm8988
->reg_cache
);
851 codec
->reg_cache
= &wm8988
->reg_cache
;
852 codec
->bias_level
= SND_SOC_BIAS_OFF
;
853 codec
->set_bias_level
= wm8988_set_bias_level
;
855 memcpy(codec
->reg_cache
, wm8988_reg
,
858 ret
= snd_soc_codec_set_cache_io(codec
, 7, 9, control
);
860 dev_err(codec
->dev
, "Failed to set cache I/O: %d\n", ret
);
864 ret
= wm8988_reset(codec
);
866 dev_err(codec
->dev
, "Failed to issue reset\n");
870 /* set the update bits (we always update left then right) */
871 reg
= snd_soc_read(codec
, WM8988_RADC
);
872 snd_soc_write(codec
, WM8988_RADC
, reg
| 0x100);
873 reg
= snd_soc_read(codec
, WM8988_RDAC
);
874 snd_soc_write(codec
, WM8988_RDAC
, reg
| 0x0100);
875 reg
= snd_soc_read(codec
, WM8988_ROUT1V
);
876 snd_soc_write(codec
, WM8988_ROUT1V
, reg
| 0x0100);
877 reg
= snd_soc_read(codec
, WM8988_ROUT2V
);
878 snd_soc_write(codec
, WM8988_ROUT2V
, reg
| 0x0100);
879 reg
= snd_soc_read(codec
, WM8988_RINVOL
);
880 snd_soc_write(codec
, WM8988_RINVOL
, reg
| 0x0100);
882 wm8988_set_bias_level(&wm8988
->codec
, SND_SOC_BIAS_STANDBY
);
884 wm8988_dai
.dev
= codec
->dev
;
886 wm8988_codec
= codec
;
888 ret
= snd_soc_register_codec(codec
);
890 dev_err(codec
->dev
, "Failed to register codec: %d\n", ret
);
894 ret
= snd_soc_register_dai(&wm8988_dai
);
896 dev_err(codec
->dev
, "Failed to register DAI: %d\n", ret
);
897 snd_soc_unregister_codec(codec
);
904 snd_soc_unregister_codec(codec
);
910 static void wm8988_unregister(struct wm8988_priv
*wm8988
)
912 wm8988_set_bias_level(&wm8988
->codec
, SND_SOC_BIAS_OFF
);
913 snd_soc_unregister_dai(&wm8988_dai
);
914 snd_soc_unregister_codec(&wm8988
->codec
);
919 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
920 static int wm8988_i2c_probe(struct i2c_client
*i2c
,
921 const struct i2c_device_id
*id
)
923 struct wm8988_priv
*wm8988
;
924 struct snd_soc_codec
*codec
;
926 wm8988
= kzalloc(sizeof(struct wm8988_priv
), GFP_KERNEL
);
930 codec
= &wm8988
->codec
;
932 i2c_set_clientdata(i2c
, wm8988
);
933 codec
->control_data
= i2c
;
935 codec
->dev
= &i2c
->dev
;
937 return wm8988_register(wm8988
, SND_SOC_I2C
);
940 static int wm8988_i2c_remove(struct i2c_client
*client
)
942 struct wm8988_priv
*wm8988
= i2c_get_clientdata(client
);
943 wm8988_unregister(wm8988
);
947 static const struct i2c_device_id wm8988_i2c_id
[] = {
951 MODULE_DEVICE_TABLE(i2c
, wm8988_i2c_id
);
953 static struct i2c_driver wm8988_i2c_driver
= {
956 .owner
= THIS_MODULE
,
958 .probe
= wm8988_i2c_probe
,
959 .remove
= wm8988_i2c_remove
,
960 .id_table
= wm8988_i2c_id
,
964 #if defined(CONFIG_SPI_MASTER)
965 static int __devinit
wm8988_spi_probe(struct spi_device
*spi
)
967 struct wm8988_priv
*wm8988
;
968 struct snd_soc_codec
*codec
;
970 wm8988
= kzalloc(sizeof(struct wm8988_priv
), GFP_KERNEL
);
974 codec
= &wm8988
->codec
;
975 codec
->control_data
= spi
;
976 codec
->dev
= &spi
->dev
;
978 dev_set_drvdata(&spi
->dev
, wm8988
);
980 return wm8988_register(wm8988
, SND_SOC_SPI
);
983 static int __devexit
wm8988_spi_remove(struct spi_device
*spi
)
985 struct wm8988_priv
*wm8988
= dev_get_drvdata(&spi
->dev
);
987 wm8988_unregister(wm8988
);
992 static struct spi_driver wm8988_spi_driver
= {
995 .bus
= &spi_bus_type
,
996 .owner
= THIS_MODULE
,
998 .probe
= wm8988_spi_probe
,
999 .remove
= __devexit_p(wm8988_spi_remove
),
1003 static int __init
wm8988_modinit(void)
1007 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
1008 ret
= i2c_add_driver(&wm8988_i2c_driver
);
1010 pr_err("WM8988: Unable to register I2C driver: %d\n", ret
);
1012 #if defined(CONFIG_SPI_MASTER)
1013 ret
= spi_register_driver(&wm8988_spi_driver
);
1015 pr_err("WM8988: Unable to register SPI driver: %d\n", ret
);
1019 module_init(wm8988_modinit
);
1021 static void __exit
wm8988_exit(void)
1023 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
1024 i2c_del_driver(&wm8988_i2c_driver
);
1026 #if defined(CONFIG_SPI_MASTER)
1027 spi_unregister_driver(&wm8988_spi_driver
);
1030 module_exit(wm8988_exit
);
1033 MODULE_DESCRIPTION("ASoC WM8988 driver");
1034 MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
1035 MODULE_LICENSE("GPL");