2 * wm9705.c -- ALSA Soc WM9705 codec support
4 * Copyright 2008 Ian Molton <spyro@f2s.com>
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License as published by the
8 * Free Software Foundation; Version 2 of the License only.
12 #include <linux/init.h>
13 #include <linux/slab.h>
14 #include <linux/module.h>
15 #include <linux/kernel.h>
16 #include <linux/device.h>
17 #include <sound/core.h>
18 #include <sound/pcm.h>
19 #include <sound/ac97_codec.h>
20 #include <sound/initval.h>
21 #include <sound/soc.h>
22 #include <sound/soc-dapm.h>
27 * WM9705 register cache
29 static const u16 wm9705_reg
[] = {
30 0x6150, 0x8000, 0x8000, 0x8000, /* 0x0 */
31 0x0000, 0x8000, 0x8008, 0x8008, /* 0x8 */
32 0x8808, 0x8808, 0x8808, 0x8808, /* 0x10 */
33 0x8808, 0x0000, 0x8000, 0x0000, /* 0x18 */
34 0x0000, 0x0000, 0x0000, 0x000f, /* 0x20 */
35 0x0605, 0x0000, 0xbb80, 0x0000, /* 0x28 */
36 0x0000, 0xbb80, 0x0000, 0x0000, /* 0x30 */
37 0x0000, 0x2000, 0x0000, 0x0000, /* 0x38 */
38 0x0000, 0x0000, 0x0000, 0x0000, /* 0x40 */
39 0x0000, 0x0000, 0x0000, 0x0000, /* 0x48 */
40 0x0000, 0x0000, 0x0000, 0x0000, /* 0x50 */
41 0x0000, 0x0000, 0x0000, 0x0000, /* 0x58 */
42 0x0000, 0x0000, 0x0000, 0x0000, /* 0x60 */
43 0x0000, 0x0000, 0x0000, 0x0000, /* 0x68 */
44 0x0000, 0x0808, 0x0000, 0x0006, /* 0x70 */
45 0x0000, 0x0000, 0x574d, 0x4c05, /* 0x78 */
48 static const struct snd_kcontrol_new wm9705_snd_ac97_controls
[] = {
49 SOC_DOUBLE("Master Playback Volume", AC97_MASTER
, 8, 0, 31, 1),
50 SOC_SINGLE("Master Playback Switch", AC97_MASTER
, 15, 1, 1),
51 SOC_DOUBLE("Headphone Playback Volume", AC97_HEADPHONE
, 8, 0, 31, 1),
52 SOC_SINGLE("Headphone Playback Switch", AC97_HEADPHONE
, 15, 1, 1),
53 SOC_DOUBLE("PCM Playback Volume", AC97_PCM
, 8, 0, 31, 1),
54 SOC_SINGLE("PCM Playback Switch", AC97_PCM
, 15, 1, 1),
55 SOC_SINGLE("Mono Playback Volume", AC97_MASTER_MONO
, 0, 31, 1),
56 SOC_SINGLE("Mono Playback Switch", AC97_MASTER_MONO
, 15, 1, 1),
57 SOC_SINGLE("PCBeep Playback Volume", AC97_PC_BEEP
, 1, 15, 1),
58 SOC_SINGLE("Phone Playback Volume", AC97_PHONE
, 0, 31, 1),
59 SOC_DOUBLE("Line Playback Volume", AC97_LINE
, 8, 0, 31, 1),
60 SOC_DOUBLE("CD Playback Volume", AC97_CD
, 8, 0, 31, 1),
61 SOC_SINGLE("Mic Playback Volume", AC97_MIC
, 0, 31, 1),
62 SOC_SINGLE("Mic 20dB Boost Switch", AC97_MIC
, 6, 1, 0),
63 SOC_DOUBLE("Capture Volume", AC97_REC_GAIN
, 8, 0, 15, 0),
64 SOC_SINGLE("Capture Switch", AC97_REC_GAIN
, 15, 1, 1),
67 static const char *wm9705_mic
[] = {"Mic 1", "Mic 2"};
68 static const char *wm9705_rec_sel
[] = {"Mic", "CD", "NC", "NC",
69 "Line", "Stereo Mix", "Mono Mix", "Phone"};
71 static const struct soc_enum wm9705_enum_mic
=
72 SOC_ENUM_SINGLE(AC97_GENERAL_PURPOSE
, 8, 2, wm9705_mic
);
73 static const struct soc_enum wm9705_enum_rec_l
=
74 SOC_ENUM_SINGLE(AC97_REC_SEL
, 8, 8, wm9705_rec_sel
);
75 static const struct soc_enum wm9705_enum_rec_r
=
76 SOC_ENUM_SINGLE(AC97_REC_SEL
, 0, 8, wm9705_rec_sel
);
79 static const struct snd_kcontrol_new wm9705_hp_mixer_controls
[] = {
80 SOC_DAPM_SINGLE("PCBeep Playback Switch", AC97_PC_BEEP
, 15, 1, 1),
81 SOC_DAPM_SINGLE("CD Playback Switch", AC97_CD
, 15, 1, 1),
82 SOC_DAPM_SINGLE("Mic Playback Switch", AC97_MIC
, 15, 1, 1),
83 SOC_DAPM_SINGLE("Phone Playback Switch", AC97_PHONE
, 15, 1, 1),
84 SOC_DAPM_SINGLE("Line Playback Switch", AC97_LINE
, 15, 1, 1),
88 static const struct snd_kcontrol_new wm9705_mic_src_controls
=
89 SOC_DAPM_ENUM("Route", wm9705_enum_mic
);
92 static const struct snd_kcontrol_new wm9705_capture_selectl_controls
=
93 SOC_DAPM_ENUM("Route", wm9705_enum_rec_l
);
94 static const struct snd_kcontrol_new wm9705_capture_selectr_controls
=
95 SOC_DAPM_ENUM("Route", wm9705_enum_rec_r
);
98 static const struct snd_soc_dapm_widget wm9705_dapm_widgets
[] = {
99 SND_SOC_DAPM_MUX("Mic Source", SND_SOC_NOPM
, 0, 0,
100 &wm9705_mic_src_controls
),
101 SND_SOC_DAPM_MUX("Left Capture Source", SND_SOC_NOPM
, 0, 0,
102 &wm9705_capture_selectl_controls
),
103 SND_SOC_DAPM_MUX("Right Capture Source", SND_SOC_NOPM
, 0, 0,
104 &wm9705_capture_selectr_controls
),
105 SND_SOC_DAPM_DAC("Left DAC", "Left HiFi Playback",
107 SND_SOC_DAPM_DAC("Right DAC", "Right HiFi Playback",
109 SND_SOC_DAPM_MIXER_NAMED_CTL("HP Mixer", SND_SOC_NOPM
, 0, 0,
110 &wm9705_hp_mixer_controls
[0],
111 ARRAY_SIZE(wm9705_hp_mixer_controls
)),
112 SND_SOC_DAPM_MIXER("Mono Mixer", SND_SOC_NOPM
, 0, 0, NULL
, 0),
113 SND_SOC_DAPM_ADC("Left ADC", "Left HiFi Capture", SND_SOC_NOPM
, 0, 0),
114 SND_SOC_DAPM_ADC("Right ADC", "Right HiFi Capture", SND_SOC_NOPM
, 0, 0),
115 SND_SOC_DAPM_PGA("Headphone PGA", SND_SOC_NOPM
, 0, 0, NULL
, 0),
116 SND_SOC_DAPM_PGA("Speaker PGA", SND_SOC_NOPM
, 0, 0, NULL
, 0),
117 SND_SOC_DAPM_PGA("Line PGA", SND_SOC_NOPM
, 0, 0, NULL
, 0),
118 SND_SOC_DAPM_PGA("Line out PGA", SND_SOC_NOPM
, 0, 0, NULL
, 0),
119 SND_SOC_DAPM_PGA("Mono PGA", SND_SOC_NOPM
, 0, 0, NULL
, 0),
120 SND_SOC_DAPM_PGA("Phone PGA", SND_SOC_NOPM
, 0, 0, NULL
, 0),
121 SND_SOC_DAPM_PGA("Mic PGA", SND_SOC_NOPM
, 0, 0, NULL
, 0),
122 SND_SOC_DAPM_PGA("PCBEEP PGA", SND_SOC_NOPM
, 0, 0, NULL
, 0),
123 SND_SOC_DAPM_PGA("CD PGA", SND_SOC_NOPM
, 0, 0, NULL
, 0),
124 SND_SOC_DAPM_PGA("ADC PGA", SND_SOC_NOPM
, 0, 0, NULL
, 0),
125 SND_SOC_DAPM_OUTPUT("HPOUTL"),
126 SND_SOC_DAPM_OUTPUT("HPOUTR"),
127 SND_SOC_DAPM_OUTPUT("LOUT"),
128 SND_SOC_DAPM_OUTPUT("ROUT"),
129 SND_SOC_DAPM_OUTPUT("MONOOUT"),
130 SND_SOC_DAPM_INPUT("PHONE"),
131 SND_SOC_DAPM_INPUT("LINEINL"),
132 SND_SOC_DAPM_INPUT("LINEINR"),
133 SND_SOC_DAPM_INPUT("CDINL"),
134 SND_SOC_DAPM_INPUT("CDINR"),
135 SND_SOC_DAPM_INPUT("PCBEEP"),
136 SND_SOC_DAPM_INPUT("MIC1"),
137 SND_SOC_DAPM_INPUT("MIC2"),
141 * WM9705 has no switches to disable the route from the inputs to the HP mixer
142 * so in order to prevent active inputs from forcing the audio outputs to be
143 * constantly enabled, we use the mutes on those inputs to simulate such
146 static const struct snd_soc_dapm_route audio_map
[] = {
148 {"HP Mixer", "PCBeep Playback Switch", "PCBEEP PGA"},
149 {"HP Mixer", "CD Playback Switch", "CD PGA"},
150 {"HP Mixer", "Mic Playback Switch", "Mic PGA"},
151 {"HP Mixer", "Phone Playback Switch", "Phone PGA"},
152 {"HP Mixer", "Line Playback Switch", "Line PGA"},
153 {"HP Mixer", NULL
, "Left DAC"},
154 {"HP Mixer", NULL
, "Right DAC"},
157 {"Mono Mixer", NULL
, "HP Mixer"},
160 {"Headphone PGA", NULL
, "HP Mixer"},
161 {"HPOUTL", NULL
, "Headphone PGA"},
162 {"HPOUTR", NULL
, "Headphone PGA"},
163 {"Line out PGA", NULL
, "HP Mixer"},
164 {"LOUT", NULL
, "Line out PGA"},
165 {"ROUT", NULL
, "Line out PGA"},
166 {"Mono PGA", NULL
, "Mono Mixer"},
167 {"MONOOUT", NULL
, "Mono PGA"},
170 {"CD PGA", NULL
, "CDINL"},
171 {"CD PGA", NULL
, "CDINR"},
172 {"Line PGA", NULL
, "LINEINL"},
173 {"Line PGA", NULL
, "LINEINR"},
174 {"Phone PGA", NULL
, "PHONE"},
175 {"Mic Source", "Mic 1", "MIC1"},
176 {"Mic Source", "Mic 2", "MIC2"},
177 {"Mic PGA", NULL
, "Mic Source"},
178 {"PCBEEP PGA", NULL
, "PCBEEP"},
180 /* Left capture selector */
181 {"Left Capture Source", "Mic", "Mic Source"},
182 {"Left Capture Source", "CD", "CDINL"},
183 {"Left Capture Source", "Line", "LINEINL"},
184 {"Left Capture Source", "Stereo Mix", "HP Mixer"},
185 {"Left Capture Source", "Mono Mix", "HP Mixer"},
186 {"Left Capture Source", "Phone", "PHONE"},
188 /* Right capture source */
189 {"Right Capture Source", "Mic", "Mic Source"},
190 {"Right Capture Source", "CD", "CDINR"},
191 {"Right Capture Source", "Line", "LINEINR"},
192 {"Right Capture Source", "Stereo Mix", "HP Mixer"},
193 {"Right Capture Source", "Mono Mix", "HP Mixer"},
194 {"Right Capture Source", "Phone", "PHONE"},
196 {"ADC PGA", NULL
, "Left Capture Source"},
197 {"ADC PGA", NULL
, "Right Capture Source"},
200 {"Left ADC", NULL
, "ADC PGA"},
201 {"Right ADC", NULL
, "ADC PGA"},
204 static int wm9705_add_widgets(struct snd_soc_codec
*codec
)
206 struct snd_soc_dapm_context
*dapm
= &codec
->dapm
;
208 snd_soc_dapm_new_controls(dapm
, wm9705_dapm_widgets
,
209 ARRAY_SIZE(wm9705_dapm_widgets
));
210 snd_soc_dapm_add_routes(dapm
, audio_map
, ARRAY_SIZE(audio_map
));
215 /* We use a register cache to enhance read performance. */
216 static unsigned int ac97_read(struct snd_soc_codec
*codec
, unsigned int reg
)
218 u16
*cache
= codec
->reg_cache
;
222 case AC97_VENDOR_ID1
:
223 case AC97_VENDOR_ID2
:
224 return soc_ac97_ops
.read(codec
->ac97
, reg
);
228 if (reg
>= (ARRAY_SIZE(wm9705_reg
)))
235 static int ac97_write(struct snd_soc_codec
*codec
, unsigned int reg
,
238 u16
*cache
= codec
->reg_cache
;
240 soc_ac97_ops
.write(codec
->ac97
, reg
, val
);
242 if (reg
< (ARRAY_SIZE(wm9705_reg
)))
248 static int ac97_prepare(struct snd_pcm_substream
*substream
,
249 struct snd_soc_dai
*dai
)
251 struct snd_pcm_runtime
*runtime
= substream
->runtime
;
252 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
253 struct snd_soc_codec
*codec
= rtd
->codec
;
257 vra
= ac97_read(codec
, AC97_EXTENDED_STATUS
);
258 ac97_write(codec
, AC97_EXTENDED_STATUS
, vra
| 0x1);
260 if (substream
->stream
== SNDRV_PCM_STREAM_PLAYBACK
)
261 reg
= AC97_PCM_FRONT_DAC_RATE
;
263 reg
= AC97_PCM_LR_ADC_RATE
;
265 return ac97_write(codec
, reg
, runtime
->rate
);
268 #define WM9705_AC97_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 | \
269 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | \
270 SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | \
271 SNDRV_PCM_RATE_48000)
273 static struct snd_soc_dai_ops wm9705_dai_ops
= {
274 .prepare
= ac97_prepare
,
277 static struct snd_soc_dai_driver wm9705_dai
[] = {
279 .name
= "wm9705-hifi",
282 .stream_name
= "HiFi Playback",
285 .rates
= WM9705_AC97_RATES
,
286 .formats
= SND_SOC_STD_AC97_FMTS
,
289 .stream_name
= "HiFi Capture",
292 .rates
= WM9705_AC97_RATES
,
293 .formats
= SND_SOC_STD_AC97_FMTS
,
295 .ops
= &wm9705_dai_ops
,
298 .name
= "wm9705-aux",
300 .stream_name
= "Aux Playback",
303 .rates
= WM9705_AC97_RATES
,
304 .formats
= SNDRV_PCM_FMTBIT_S16_LE
,
309 static int wm9705_reset(struct snd_soc_codec
*codec
)
311 if (soc_ac97_ops
.reset
) {
312 soc_ac97_ops
.reset(codec
->ac97
);
313 if (ac97_read(codec
, 0) == wm9705_reg
[0])
314 return 0; /* Success */
321 static int wm9705_soc_suspend(struct snd_soc_codec
*codec
, pm_message_t msg
)
323 soc_ac97_ops
.write(codec
->ac97
, AC97_POWERDOWN
, 0xffff);
328 static int wm9705_soc_resume(struct snd_soc_codec
*codec
)
331 u16
*cache
= codec
->reg_cache
;
333 ret
= wm9705_reset(codec
);
335 printk(KERN_ERR
"could not reset AC97 codec\n");
339 for (i
= 2; i
< ARRAY_SIZE(wm9705_reg
) << 1; i
+= 2) {
340 soc_ac97_ops
.write(codec
->ac97
, i
, cache
[i
>>1]);
346 #define wm9705_soc_suspend NULL
347 #define wm9705_soc_resume NULL
350 static int wm9705_soc_probe(struct snd_soc_codec
*codec
)
354 printk(KERN_INFO
"WM9705 SoC Audio Codec\n");
356 ret
= snd_soc_new_ac97_codec(codec
, &soc_ac97_ops
, 0);
358 printk(KERN_ERR
"wm9705: failed to register AC97 codec\n");
362 ret
= wm9705_reset(codec
);
366 snd_soc_add_controls(codec
, wm9705_snd_ac97_controls
,
367 ARRAY_SIZE(wm9705_snd_ac97_controls
));
368 wm9705_add_widgets(codec
);
373 snd_soc_free_ac97_codec(codec
);
377 static int wm9705_soc_remove(struct snd_soc_codec
*codec
)
379 snd_soc_free_ac97_codec(codec
);
383 static struct snd_soc_codec_driver soc_codec_dev_wm9705
= {
384 .probe
= wm9705_soc_probe
,
385 .remove
= wm9705_soc_remove
,
386 .suspend
= wm9705_soc_suspend
,
387 .resume
= wm9705_soc_resume
,
390 .reg_cache_size
= ARRAY_SIZE(wm9705_reg
),
391 .reg_word_size
= sizeof(u16
),
393 .reg_cache_default
= wm9705_reg
,
396 static __devinit
int wm9705_probe(struct platform_device
*pdev
)
398 return snd_soc_register_codec(&pdev
->dev
,
399 &soc_codec_dev_wm9705
, wm9705_dai
, ARRAY_SIZE(wm9705_dai
));
402 static int __devexit
wm9705_remove(struct platform_device
*pdev
)
404 snd_soc_unregister_codec(&pdev
->dev
);
408 static struct platform_driver wm9705_codec_driver
= {
410 .name
= "wm9705-codec",
411 .owner
= THIS_MODULE
,
414 .probe
= wm9705_probe
,
415 .remove
= __devexit_p(wm9705_remove
),
418 static int __init
wm9705_init(void)
420 return platform_driver_register(&wm9705_codec_driver
);
422 module_init(wm9705_init
);
424 static void __exit
wm9705_exit(void)
426 platform_driver_unregister(&wm9705_codec_driver
);
428 module_exit(wm9705_exit
);
430 MODULE_DESCRIPTION("ASoC WM9705 driver");
431 MODULE_AUTHOR("Ian Molton");
432 MODULE_LICENSE("GPL v2");