2 * wm8731.c -- WM8731 ALSA SoC Audio driver
4 * Copyright 2005 Openedhand Ltd.
6 * Author: Richard Purdie <richard@openedhand.com>
8 * Based on wm8753.c by Liam Girdwood
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 <sound/driver.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 AUDIO_NAME "wm8731"
33 #define WM8731_VERSION "0.12"
39 #define WM8731_DEBUG 0
42 #define dbg(format, arg...) \
43 printk(KERN_DEBUG AUDIO_NAME ": " format "\n" , ## arg)
45 #define dbg(format, arg...) do {} while (0)
47 #define err(format, arg...) \
48 printk(KERN_ERR AUDIO_NAME ": " format "\n" , ## arg)
49 #define info(format, arg...) \
50 printk(KERN_INFO AUDIO_NAME ": " format "\n" , ## arg)
51 #define warn(format, arg...) \
52 printk(KERN_WARNING AUDIO_NAME ": " format "\n" , ## arg)
54 struct snd_soc_codec_device soc_codec_dev_wm8731
;
57 * wm8731 register cache
58 * We can't read the WM8731 register space when we are
59 * using 2 wire for device control, so we cache them instead.
60 * There is no point in caching the reset register
62 static const u16 wm8731_reg
[WM8731_CACHEREGNUM
] = {
63 0x0097, 0x0097, 0x0079, 0x0079,
64 0x000a, 0x0008, 0x009f, 0x000a,
68 #define WM8731_DAIFMT \
69 (SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_LEFT_J | SND_SOC_DAIFMT_RIGHT_J | \
70 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_NB_IF | SND_SOC_DAIFMT_IB_NF | \
74 (SND_SOC_DAIDIR_PLAYBACK | SND_SOC_DAIDIR_CAPTURE)
76 #define WM8731_RATES \
77 (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 | SNDRV_PCM_RATE_16000 | \
78 SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | \
79 SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000)
81 #define WM8731_HIFI_BITS \
82 (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \
83 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
85 static struct snd_soc_dai_mode wm8731_modes
[] = {
86 /* codec frame and clock master modes */
89 .fmt
= WM8731_DAIFMT
| SND_SOC_DAIFMT_CBM_CFM
,
90 .pcmfmt
= WM8731_HIFI_BITS
,
91 .pcmrate
= SNDRV_PCM_RATE_8000
,
93 .flags
= SND_SOC_DAI_BFS_RATE
,
98 .fmt
= WM8731_DAIFMT
| SND_SOC_DAIFMT_CBM_CFM
,
99 .pcmfmt
= WM8731_HIFI_BITS
,
100 .pcmrate
= SNDRV_PCM_RATE_8000
,
101 .pcmdir
= WM8731_DIR
,
102 .flags
= SND_SOC_DAI_BFS_RATE
,
107 .fmt
= WM8731_DAIFMT
| SND_SOC_DAIFMT_CBM_CFM
,
108 .pcmfmt
= WM8731_HIFI_BITS
,
109 .pcmrate
= SNDRV_PCM_RATE_8000
,
110 .pcmdir
= WM8731_DIR
,
111 .flags
= SND_SOC_DAI_BFS_RATE
,
116 .fmt
= WM8731_DAIFMT
| SND_SOC_DAIFMT_CBM_CFM
,
117 .pcmfmt
= WM8731_HIFI_BITS
,
118 .pcmrate
= SNDRV_PCM_RATE_8000
,
119 .pcmdir
= WM8731_DIR
,
120 .flags
= SND_SOC_DAI_BFS_RATE
,
127 .fmt
= WM8731_DAIFMT
| SND_SOC_DAIFMT_CBM_CFM
,
128 .pcmfmt
= WM8731_HIFI_BITS
,
129 .pcmrate
= SNDRV_PCM_RATE_32000
,
130 .pcmdir
= WM8731_DIR
,
131 .flags
= SND_SOC_DAI_BFS_RATE
,
136 .fmt
= WM8731_DAIFMT
| SND_SOC_DAIFMT_CBM_CFM
,
137 .pcmfmt
= WM8731_HIFI_BITS
,
138 .pcmrate
= SNDRV_PCM_RATE_32000
,
139 .pcmdir
= WM8731_DIR
,
140 .flags
= SND_SOC_DAI_BFS_RATE
,
147 .fmt
= WM8731_DAIFMT
| SND_SOC_DAIFMT_CBM_CFM
,
148 .pcmfmt
= WM8731_HIFI_BITS
,
149 .pcmrate
= SNDRV_PCM_RATE_44100
| SNDRV_PCM_RATE_48000
,
150 .pcmdir
= WM8731_DIR
,
151 .flags
= SND_SOC_DAI_BFS_RATE
,
156 .fmt
= WM8731_DAIFMT
| SND_SOC_DAIFMT_CBM_CFM
,
157 .pcmfmt
= WM8731_HIFI_BITS
,
158 .pcmrate
= SNDRV_PCM_RATE_44100
| SNDRV_PCM_RATE_48000
,
159 .pcmdir
= WM8731_DIR
,
160 .flags
= SND_SOC_DAI_BFS_RATE
,
167 .fmt
= WM8731_DAIFMT
| SND_SOC_DAIFMT_CBM_CFM
,
168 .pcmfmt
= WM8731_HIFI_BITS
,
169 .pcmrate
= SNDRV_PCM_RATE_88200
| SNDRV_PCM_RATE_96000
,
170 .pcmdir
= WM8731_DIR
,
171 .flags
= SND_SOC_DAI_BFS_RATE
,
176 .fmt
= WM8731_DAIFMT
| SND_SOC_DAIFMT_CBM_CFM
,
177 .pcmfmt
= WM8731_HIFI_BITS
,
178 .pcmrate
= SNDRV_PCM_RATE_88200
| SNDRV_PCM_RATE_96000
,
179 .pcmdir
= WM8731_DIR
,
180 .flags
= SND_SOC_DAI_BFS_RATE
,
185 /* USB codec frame and clock master modes */
188 .fmt
= WM8731_DAIFMT
| SND_SOC_DAIFMT_CBM_CFM
,
189 .pcmfmt
= WM8731_HIFI_BITS
,
190 .pcmrate
= SNDRV_PCM_RATE_8000
,
191 .pcmdir
= WM8731_DIR
,
192 .flags
= SND_SOC_DAI_BFS_DIV
,
194 .bfs
= SND_SOC_FSBD(1),
199 .fmt
= WM8731_DAIFMT
| SND_SOC_DAIFMT_CBM_CFM
,
200 .pcmfmt
= WM8731_HIFI_BITS
,
201 .pcmrate
= SNDRV_PCM_RATE_44100
,
202 .pcmdir
= WM8731_DIR
,
203 .flags
= SND_SOC_DAI_BFS_DIV
,
205 .bfs
= SND_SOC_FSBD(1),
210 .fmt
= WM8731_DAIFMT
| SND_SOC_DAIFMT_CBM_CFM
,
211 .pcmfmt
= WM8731_HIFI_BITS
,
212 .pcmrate
= SNDRV_PCM_RATE_48000
,
213 .pcmdir
= WM8731_DIR
,
214 .flags
= SND_SOC_DAI_BFS_DIV
,
216 .bfs
= SND_SOC_FSBD(1),
221 .fmt
= WM8731_DAIFMT
| SND_SOC_DAIFMT_CBM_CFM
,
222 .pcmfmt
= WM8731_HIFI_BITS
,
223 .pcmrate
= SNDRV_PCM_RATE_88200
,
224 .pcmdir
= WM8731_DIR
,
225 .flags
= SND_SOC_DAI_BFS_DIV
,
227 .bfs
= SND_SOC_FSBD(1),
232 .fmt
= WM8731_DAIFMT
| SND_SOC_DAIFMT_CBM_CFM
,
233 .pcmfmt
= WM8731_HIFI_BITS
,
234 .pcmrate
= SNDRV_PCM_RATE_96000
,
235 .pcmdir
= WM8731_DIR
,
236 .flags
= SND_SOC_DAI_BFS_DIV
,
238 .bfs
= SND_SOC_FSBD(1),
241 /* codec frame and clock slave modes */
243 .fmt
= WM8731_DAIFMT
| SND_SOC_DAIFMT_CBS_CFS
,
244 .pcmfmt
= WM8731_HIFI_BITS
,
245 .pcmrate
= WM8731_RATES
,
246 .pcmdir
= WM8731_DIR
,
247 .flags
= SND_SOC_DAI_BFS_DIV
,
248 .fs
= SND_SOC_FS_ALL
,
249 .bfs
= SND_SOC_FSB_ALL
,
254 * read wm8731 register cache
256 static inline unsigned int wm8731_read_reg_cache(struct snd_soc_codec
*codec
,
259 u16
*cache
= codec
->reg_cache
;
260 if (reg
== WM8731_RESET
)
262 if (reg
>= WM8731_CACHEREGNUM
)
268 * write wm8731 register cache
270 static inline void wm8731_write_reg_cache(struct snd_soc_codec
*codec
,
271 u16 reg
, unsigned int value
)
273 u16
*cache
= codec
->reg_cache
;
274 if (reg
>= WM8731_CACHEREGNUM
)
280 * write to the WM8731 register space
282 static int wm8731_write(struct snd_soc_codec
*codec
, unsigned int reg
,
288 * D15..D9 WM8731 register offset
289 * D8...D0 register data
291 data
[0] = (reg
<< 1) | ((value
>> 8) & 0x0001);
292 data
[1] = value
& 0x00ff;
294 wm8731_write_reg_cache (codec
, reg
, value
);
295 if (codec
->hw_write(codec
->control_data
, data
, 2) == 2)
301 #define wm8731_reset(c) wm8731_write(c, WM8731_RESET, 0)
303 static const char *wm8731_input_select
[] = {"Line In", "Mic"};
304 static const char *wm8731_deemph
[] = {"None", "32Khz", "44.1Khz", "48Khz"};
306 static const struct soc_enum wm8731_enum
[] = {
307 SOC_ENUM_SINGLE(WM8731_APANA
, 2, 2, wm8731_input_select
),
308 SOC_ENUM_SINGLE(WM8731_APDIGI
, 1, 4, wm8731_deemph
),
311 static const struct snd_kcontrol_new wm8731_snd_controls
[] = {
313 SOC_DOUBLE_R("Master Playback Volume", WM8731_LOUT1V
, WM8731_ROUT1V
,
315 SOC_DOUBLE_R("Master Playback ZC Switch", WM8731_LOUT1V
, WM8731_ROUT1V
,
318 SOC_DOUBLE_R("Capture Volume", WM8731_LINVOL
, WM8731_RINVOL
, 0, 31, 0),
319 SOC_DOUBLE_R("Line Capture Switch", WM8731_LINVOL
, WM8731_RINVOL
, 7, 1, 1),
321 SOC_SINGLE("Mic Boost (+20dB)", WM8731_APANA
, 0, 1, 0),
322 SOC_SINGLE("Capture Mic Switch", WM8731_APANA
, 1, 1, 1),
324 SOC_SINGLE("Sidetone Playback Volume", WM8731_APANA
, 6, 3, 1),
326 SOC_SINGLE("ADC High Pass Filter Switch", WM8731_APDIGI
, 0, 1, 1),
327 SOC_SINGLE("Store DC Offset Switch", WM8731_APDIGI
, 4, 1, 0),
329 SOC_ENUM("Playback De-emphasis", wm8731_enum
[1]),
332 /* add non dapm controls */
333 static int wm8731_add_controls(struct snd_soc_codec
*codec
)
337 for (i
= 0; i
< ARRAY_SIZE(wm8731_snd_controls
); i
++) {
338 if ((err
= snd_ctl_add(codec
->card
,
339 snd_soc_cnew(&wm8731_snd_controls
[i
],codec
, NULL
))) < 0)
347 static const struct snd_kcontrol_new wm8731_output_mixer_controls
[] = {
348 SOC_DAPM_SINGLE("Line Bypass Switch", WM8731_APANA
, 3, 1, 0),
349 SOC_DAPM_SINGLE("Mic Sidetone Switch", WM8731_APANA
, 5, 1, 0),
350 SOC_DAPM_SINGLE("HiFi Playback Switch", WM8731_APANA
, 4, 1, 0),
354 static const struct snd_kcontrol_new wm8731_input_mux_controls
=
355 SOC_DAPM_ENUM("Input Select", wm8731_enum
[0]);
357 static const struct snd_soc_dapm_widget wm8731_dapm_widgets
[] = {
358 SND_SOC_DAPM_MIXER("Output Mixer", WM8731_PWR
, 4, 1,
359 &wm8731_output_mixer_controls
[0],
360 ARRAY_SIZE(wm8731_output_mixer_controls
)),
361 SND_SOC_DAPM_DAC("DAC", "HiFi Playback", WM8731_PWR
, 3, 1),
362 SND_SOC_DAPM_OUTPUT("LOUT"),
363 SND_SOC_DAPM_OUTPUT("LHPOUT"),
364 SND_SOC_DAPM_OUTPUT("ROUT"),
365 SND_SOC_DAPM_OUTPUT("RHPOUT"),
366 SND_SOC_DAPM_ADC("ADC", "HiFi Capture", WM8731_PWR
, 2, 1),
367 SND_SOC_DAPM_MUX("Input Mux", SND_SOC_NOPM
, 0, 0, &wm8731_input_mux_controls
),
368 SND_SOC_DAPM_PGA("Line Input", WM8731_PWR
, 0, 1, NULL
, 0),
369 SND_SOC_DAPM_MICBIAS("Mic Bias", WM8731_PWR
, 1, 1),
370 SND_SOC_DAPM_INPUT("MICIN"),
371 SND_SOC_DAPM_INPUT("RLINEIN"),
372 SND_SOC_DAPM_INPUT("LLINEIN"),
375 static const char *intercon
[][3] = {
377 {"Output Mixer", "Line Bypass Switch", "Line Input"},
378 {"Output Mixer", "HiFi Playback Switch", "DAC"},
379 {"Output Mixer", "Mic Sidetone Switch", "Mic Bias"},
382 {"RHPOUT", NULL
, "Output Mixer"},
383 {"ROUT", NULL
, "Output Mixer"},
384 {"LHPOUT", NULL
, "Output Mixer"},
385 {"LOUT", NULL
, "Output Mixer"},
388 {"Input Mux", "Line In", "Line Input"},
389 {"Input Mux", "Mic", "Mic Bias"},
390 {"ADC", NULL
, "Input Mux"},
393 {"Line Input", NULL
, "LLINEIN"},
394 {"Line Input", NULL
, "RLINEIN"},
395 {"Mic Bias", NULL
, "MICIN"},
401 static int wm8731_add_widgets(struct snd_soc_codec
*codec
)
405 for(i
= 0; i
< ARRAY_SIZE(wm8731_dapm_widgets
); i
++) {
406 snd_soc_dapm_new_control(codec
, &wm8731_dapm_widgets
[i
]);
409 /* set up audio path interconnects */
410 for(i
= 0; intercon
[i
][0] != NULL
; i
++) {
411 snd_soc_dapm_connect_input(codec
, intercon
[i
][0],
412 intercon
[i
][1], intercon
[i
][2]);
415 snd_soc_dapm_new_widgets(codec
);
428 /* codec mclk clock divider coefficients */
429 static const struct _coeff_div coeff_div
[] = {
431 {12288000, 48000, 256, 0x0, 0x0, 0x0},
432 {18432000, 48000, 384, 0x0, 0x1, 0x0},
433 {12000000, 48000, 250, 0x0, 0x0, 0x1},
436 {12288000, 32000, 384, 0x6, 0x0, 0x0},
437 {18432000, 32000, 576, 0x6, 0x1, 0x0},
440 {12288000, 8000, 1536, 0x3, 0x0, 0x0},
441 {18432000, 8000, 2304, 0x3, 0x1, 0x0},
442 {11289600, 8000, 1408, 0xb, 0x0, 0x0},
443 {16934400, 8000, 2112, 0xb, 0x1, 0x0},
444 {12000000, 8000, 1500, 0x3, 0x0, 0x1},
447 {12288000, 96000, 128, 0x7, 0x0, 0x0},
448 {18432000, 96000, 192, 0x7, 0x1, 0x0},
449 {12000000, 96000, 125, 0x7, 0x0, 0x1},
452 {11289600, 44100, 256, 0x8, 0x0, 0x0},
453 {16934400, 44100, 384, 0x8, 0x1, 0x0},
454 {12000000, 44100, 272, 0x8, 0x1, 0x1},
457 {11289600, 88200, 128, 0xf, 0x0, 0x0},
458 {16934400, 88200, 192, 0xf, 0x1, 0x0},
459 {12000000, 88200, 136, 0xf, 0x1, 0x1},
462 static inline int get_coeff(int mclk
, int rate
)
466 for (i
= 0; i
< ARRAY_SIZE(coeff_div
); i
++) {
467 if (coeff_div
[i
].rate
== rate
&& coeff_div
[i
].mclk
== mclk
)
473 /* WM8731 supports numerous clocks per sample rate */
474 static unsigned int wm8731_config_sysclk(struct snd_soc_codec_dai
*dai
,
475 struct snd_soc_clock_info
*info
, unsigned int clk
)
479 /* check that the calculated FS and rate actually match a clock from
480 * the machine driver */
481 if (info
->fs
* info
->rate
== clk
)
487 static int wm8731_pcm_prepare(struct snd_pcm_substream
*substream
)
489 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
490 struct snd_soc_device
*socdev
= rtd
->socdev
;
491 struct snd_soc_codec
*codec
= socdev
->codec
;
492 u16 iface
= 0, srate
;
493 int i
= get_coeff(rtd
->codec_dai
->mclk
,
494 snd_soc_get_rate(rtd
->codec_dai
->dai_runtime
.pcmrate
));
496 /* set master/slave audio interface */
497 switch (rtd
->codec_dai
->dai_runtime
.fmt
& SND_SOC_DAIFMT_CLOCK_MASK
) {
498 case SND_SOC_DAIFMT_CBM_CFM
:
501 case SND_SOC_DAIFMT_CBS_CFS
:
504 srate
= (coeff_div
[i
].sr
<< 2) |
505 (coeff_div
[i
].bosr
<< 1) | coeff_div
[i
].usb
;
506 wm8731_write(codec
, WM8731_SRATE
, srate
);
508 /* interface format */
509 switch (rtd
->codec_dai
->dai_runtime
.fmt
& SND_SOC_DAIFMT_FORMAT_MASK
) {
510 case SND_SOC_DAIFMT_I2S
:
513 case SND_SOC_DAIFMT_RIGHT_J
:
515 case SND_SOC_DAIFMT_LEFT_J
:
518 case SND_SOC_DAIFMT_DSP_A
:
521 case SND_SOC_DAIFMT_DSP_B
:
527 switch (rtd
->codec_dai
->dai_runtime
.pcmfmt
) {
528 case SNDRV_PCM_FMTBIT_S16_LE
:
530 case SNDRV_PCM_FMTBIT_S20_3LE
:
533 case SNDRV_PCM_FMTBIT_S24_LE
:
536 case SNDRV_PCM_FMTBIT_S32_LE
:
541 /* clock inversion */
542 switch (rtd
->codec_dai
->dai_runtime
.fmt
& SND_SOC_DAIFMT_INV_MASK
) {
543 case SND_SOC_DAIFMT_NB_NF
:
545 case SND_SOC_DAIFMT_IB_IF
:
548 case SND_SOC_DAIFMT_IB_NF
:
551 case SND_SOC_DAIFMT_NB_IF
:
557 wm8731_write(codec
, WM8731_IFACE
, iface
);
560 wm8731_write(codec
, WM8731_ACTIVE
, 0x0001);
564 static void wm8731_shutdown(struct snd_pcm_substream
*substream
)
566 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
567 struct snd_soc_device
*socdev
= rtd
->socdev
;
568 struct snd_soc_codec
*codec
= socdev
->codec
;
571 if (!codec
->active
) {
573 wm8731_write(codec
, WM8731_ACTIVE
, 0x0);
577 static int wm8731_mute(struct snd_soc_codec
*codec
,
578 struct snd_soc_codec_dai
*dai
, int mute
)
580 u16 mute_reg
= wm8731_read_reg_cache(codec
, WM8731_APDIGI
) & 0xfff7;
582 wm8731_write(codec
, WM8731_APDIGI
, mute_reg
| 0x8);
584 wm8731_write(codec
, WM8731_APDIGI
, mute_reg
);
588 static int wm8731_dapm_event(struct snd_soc_codec
*codec
, int event
)
590 u16 reg
= wm8731_read_reg_cache(codec
, WM8731_PWR
) & 0xff7f;
593 case SNDRV_CTL_POWER_D0
: /* full On */
594 /* vref/mid, osc on, dac unmute */
595 wm8731_write(codec
, WM8731_PWR
, reg
);
597 case SNDRV_CTL_POWER_D1
: /* partial On */
598 case SNDRV_CTL_POWER_D2
: /* partial On */
600 case SNDRV_CTL_POWER_D3hot
: /* Off, with power */
601 /* everything off except vref/vmid, */
602 wm8731_write(codec
, WM8731_PWR
, reg
| 0x0040);
604 case SNDRV_CTL_POWER_D3cold
: /* Off, without power */
605 /* everything off, dac mute, inactive */
606 wm8731_write(codec
, WM8731_ACTIVE
, 0x0);
607 wm8731_write(codec
, WM8731_PWR
, 0xffff);
610 codec
->dapm_state
= event
;
614 struct snd_soc_codec_dai wm8731_dai
= {
617 .stream_name
= "Playback",
622 .stream_name
= "Capture",
626 .config_sysclk
= wm8731_config_sysclk
,
627 .digital_mute
= wm8731_mute
,
629 .prepare
= wm8731_pcm_prepare
,
630 .shutdown
= wm8731_shutdown
,
633 .num_modes
= ARRAY_SIZE(wm8731_modes
),
634 .mode
= wm8731_modes
,
637 EXPORT_SYMBOL_GPL(wm8731_dai
);
639 static int wm8731_suspend(struct platform_device
*pdev
, pm_message_t state
)
641 struct snd_soc_device
*socdev
= platform_get_drvdata(pdev
);
642 struct snd_soc_codec
*codec
= socdev
->codec
;
644 wm8731_write(codec
, WM8731_ACTIVE
, 0x0);
645 wm8731_dapm_event(codec
, SNDRV_CTL_POWER_D3cold
);
649 static int wm8731_resume(struct platform_device
*pdev
)
651 struct snd_soc_device
*socdev
= platform_get_drvdata(pdev
);
652 struct snd_soc_codec
*codec
= socdev
->codec
;
655 u16
*cache
= codec
->reg_cache
;
657 /* Sync reg_cache with the hardware */
658 for (i
= 0; i
< ARRAY_SIZE(wm8731_reg
); i
++) {
659 data
[0] = (i
<< 1) | ((cache
[i
] >> 8) & 0x0001);
660 data
[1] = cache
[i
] & 0x00ff;
661 codec
->hw_write(codec
->control_data
, data
, 2);
663 wm8731_dapm_event(codec
, SNDRV_CTL_POWER_D3hot
);
664 wm8731_dapm_event(codec
, codec
->suspend_dapm_state
);
669 * initialise the WM8731 driver
670 * register the mixer and dsp interfaces with the kernel
672 static int wm8731_init(struct snd_soc_device
*socdev
)
674 struct snd_soc_codec
*codec
= socdev
->codec
;
677 codec
->name
= "WM8731";
678 codec
->owner
= THIS_MODULE
;
679 codec
->read
= wm8731_read_reg_cache
;
680 codec
->write
= wm8731_write
;
681 codec
->dapm_event
= wm8731_dapm_event
;
682 codec
->dai
= &wm8731_dai
;
684 codec
->reg_cache_size
= ARRAY_SIZE(wm8731_reg
);
687 kzalloc(sizeof(u16
) * ARRAY_SIZE(wm8731_reg
), GFP_KERNEL
);
688 if (codec
->reg_cache
== NULL
)
690 memcpy(codec
->reg_cache
,
691 wm8731_reg
, sizeof(u16
) * ARRAY_SIZE(wm8731_reg
));
692 codec
->reg_cache_size
= sizeof(u16
) * ARRAY_SIZE(wm8731_reg
);
697 ret
= snd_soc_new_pcms(socdev
, SNDRV_DEFAULT_IDX1
, SNDRV_DEFAULT_STR1
);
699 printk(KERN_ERR
"wm8731: failed to create pcms\n");
703 /* power on device */
704 wm8731_dapm_event(codec
, SNDRV_CTL_POWER_D3hot
);
706 /* set the update bits */
707 reg
= wm8731_read_reg_cache(codec
, WM8731_LOUT1V
);
708 wm8731_write(codec
, WM8731_LOUT1V
, reg
| 0x0100);
709 reg
= wm8731_read_reg_cache(codec
, WM8731_ROUT1V
);
710 wm8731_write(codec
, WM8731_ROUT1V
, reg
| 0x0100);
711 reg
= wm8731_read_reg_cache(codec
, WM8731_LINVOL
);
712 wm8731_write(codec
, WM8731_LINVOL
, reg
| 0x0100);
713 reg
= wm8731_read_reg_cache(codec
, WM8731_RINVOL
);
714 wm8731_write(codec
, WM8731_RINVOL
, reg
| 0x0100);
716 wm8731_add_controls(codec
);
717 wm8731_add_widgets(codec
);
718 ret
= snd_soc_register_card(socdev
);
720 printk(KERN_ERR
"wm8731: failed to register card\n");
727 snd_soc_free_pcms(socdev
);
728 snd_soc_dapm_free(socdev
);
730 kfree(codec
->reg_cache
);
734 static struct snd_soc_device
*wm8731_socdev
;
736 #if defined (CONFIG_I2C) || defined (CONFIG_I2C_MODULE)
739 * WM8731 2 wire address is determined by GPIO5
740 * state during powerup.
744 static unsigned short normal_i2c
[] = { 0, I2C_CLIENT_END
};
746 /* Magic definition of all other variables and things */
749 static struct i2c_driver wm8731_i2c_driver
;
750 static struct i2c_client client_template
;
752 /* If the i2c layer weren't so broken, we could pass this kind of data
755 static int wm8731_codec_probe(struct i2c_adapter
*adap
, int addr
, int kind
)
757 struct snd_soc_device
*socdev
= wm8731_socdev
;
758 struct wm8731_setup_data
*setup
= socdev
->codec_data
;
759 struct snd_soc_codec
*codec
= socdev
->codec
;
760 struct i2c_client
*i2c
;
763 if (addr
!= setup
->i2c_address
)
766 client_template
.adapter
= adap
;
767 client_template
.addr
= addr
;
769 i2c
= kzalloc(sizeof(struct i2c_client
), GFP_KERNEL
);
774 memcpy(i2c
, &client_template
, sizeof(struct i2c_client
));
775 i2c_set_clientdata(i2c
, codec
);
776 codec
->control_data
= i2c
;
778 ret
= i2c_attach_client(i2c
);
780 err("failed to attach codec at addr %x\n", addr
);
784 ret
= wm8731_init(socdev
);
786 err("failed to initialise WM8731\n");
797 static int wm8731_i2c_detach(struct i2c_client
*client
)
799 struct snd_soc_codec
* codec
= i2c_get_clientdata(client
);
800 i2c_detach_client(client
);
801 kfree(codec
->reg_cache
);
806 static int wm8731_i2c_attach(struct i2c_adapter
*adap
)
808 return i2c_probe(adap
, &addr_data
, wm8731_codec_probe
);
811 /* corgi i2c codec control layer */
812 static struct i2c_driver wm8731_i2c_driver
= {
814 .name
= "WM8731 I2C Codec",
815 .owner
= THIS_MODULE
,
817 .id
= I2C_DRIVERID_WM8731
,
818 .attach_adapter
= wm8731_i2c_attach
,
819 .detach_client
= wm8731_i2c_detach
,
823 static struct i2c_client client_template
= {
825 .driver
= &wm8731_i2c_driver
,
829 static int wm8731_probe(struct platform_device
*pdev
)
831 struct snd_soc_device
*socdev
= platform_get_drvdata(pdev
);
832 struct wm8731_setup_data
*setup
;
833 struct snd_soc_codec
*codec
;
836 info("WM8731 Audio Codec %s", WM8731_VERSION
);
838 setup
= socdev
->codec_data
;
839 codec
= kzalloc(sizeof(struct snd_soc_codec
), GFP_KERNEL
);
843 socdev
->codec
= codec
;
844 mutex_init(&codec
->mutex
);
845 INIT_LIST_HEAD(&codec
->dapm_widgets
);
846 INIT_LIST_HEAD(&codec
->dapm_paths
);
848 wm8731_socdev
= socdev
;
849 #if defined (CONFIG_I2C) || defined (CONFIG_I2C_MODULE)
850 if (setup
->i2c_address
) {
851 normal_i2c
[0] = setup
->i2c_address
;
852 codec
->hw_write
= (hw_write_t
)i2c_master_send
;
853 ret
= i2c_add_driver(&wm8731_i2c_driver
);
855 printk(KERN_ERR
"can't add i2c driver");
858 /* Add other interfaces here */
863 /* power down chip */
864 static int wm8731_remove(struct platform_device
*pdev
)
866 struct snd_soc_device
*socdev
= platform_get_drvdata(pdev
);
867 struct snd_soc_codec
*codec
= socdev
->codec
;
869 if (codec
->control_data
)
870 wm8731_dapm_event(codec
, SNDRV_CTL_POWER_D3cold
);
872 snd_soc_free_pcms(socdev
);
873 snd_soc_dapm_free(socdev
);
874 #if defined (CONFIG_I2C) || defined (CONFIG_I2C_MODULE)
875 i2c_del_driver(&wm8731_i2c_driver
);
882 struct snd_soc_codec_device soc_codec_dev_wm8731
= {
883 .probe
= wm8731_probe
,
884 .remove
= wm8731_remove
,
885 .suspend
= wm8731_suspend
,
886 .resume
= wm8731_resume
,
889 EXPORT_SYMBOL_GPL(soc_codec_dev_wm8731
);
891 MODULE_DESCRIPTION("ASoC WM8731 driver");
892 MODULE_AUTHOR("Richard Purdie");
893 MODULE_LICENSE("GPL");