xref: /openbmc/linux/sound/soc/codecs/wm9705.c (revision 82003e04)
1 /*
2  * wm9705.c  --  ALSA Soc WM9705 codec support
3  *
4  * Copyright 2008 Ian Molton <spyro@f2s.com>
5  *
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.
9  *
10  */
11 
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 
23 #include "wm9705.h"
24 
25 #define WM9705_VENDOR_ID 0x574d4c05
26 #define WM9705_VENDOR_ID_MASK 0xffffffff
27 
28 /*
29  * WM9705 register cache
30  */
31 static const u16 wm9705_reg[] = {
32 	0x6150, 0x8000, 0x8000, 0x8000, /* 0x0  */
33 	0x0000, 0x8000, 0x8008, 0x8008, /* 0x8  */
34 	0x8808, 0x8808, 0x8808, 0x8808, /* 0x10 */
35 	0x8808, 0x0000, 0x8000, 0x0000, /* 0x18 */
36 	0x0000, 0x0000, 0x0000, 0x000f, /* 0x20 */
37 	0x0605, 0x0000, 0xbb80, 0x0000, /* 0x28 */
38 	0x0000, 0xbb80, 0x0000, 0x0000, /* 0x30 */
39 	0x0000, 0x2000, 0x0000, 0x0000, /* 0x38 */
40 	0x0000, 0x0000, 0x0000, 0x0000, /* 0x40 */
41 	0x0000, 0x0000, 0x0000, 0x0000, /* 0x48 */
42 	0x0000, 0x0000, 0x0000, 0x0000, /* 0x50 */
43 	0x0000, 0x0000, 0x0000, 0x0000, /* 0x58 */
44 	0x0000, 0x0000, 0x0000, 0x0000, /* 0x60 */
45 	0x0000, 0x0000, 0x0000, 0x0000, /* 0x68 */
46 	0x0000, 0x0808, 0x0000, 0x0006, /* 0x70 */
47 	0x0000, 0x0000, 0x574d, 0x4c05, /* 0x78 */
48 };
49 
50 static const struct snd_kcontrol_new wm9705_snd_ac97_controls[] = {
51 	SOC_DOUBLE("Master Playback Volume", AC97_MASTER, 8, 0, 31, 1),
52 	SOC_SINGLE("Master Playback Switch", AC97_MASTER, 15, 1, 1),
53 	SOC_DOUBLE("Headphone Playback Volume", AC97_HEADPHONE, 8, 0, 31, 1),
54 	SOC_SINGLE("Headphone Playback Switch", AC97_HEADPHONE, 15, 1, 1),
55 	SOC_DOUBLE("PCM Playback Volume", AC97_PCM, 8, 0, 31, 1),
56 	SOC_SINGLE("PCM Playback Switch", AC97_PCM, 15, 1, 1),
57 	SOC_SINGLE("Mono Playback Volume", AC97_MASTER_MONO, 0, 31, 1),
58 	SOC_SINGLE("Mono Playback Switch", AC97_MASTER_MONO, 15, 1, 1),
59 	SOC_SINGLE("PCBeep Playback Volume", AC97_PC_BEEP, 1, 15, 1),
60 	SOC_SINGLE("Phone Playback Volume", AC97_PHONE, 0, 31, 1),
61 	SOC_DOUBLE("Line Playback Volume", AC97_LINE, 8, 0, 31, 1),
62 	SOC_DOUBLE("CD Playback Volume", AC97_CD, 8, 0, 31, 1),
63 	SOC_SINGLE("Mic Playback Volume", AC97_MIC, 0, 31, 1),
64 	SOC_SINGLE("Mic 20dB Boost Switch", AC97_MIC, 6, 1, 0),
65 	SOC_DOUBLE("Capture Volume", AC97_REC_GAIN, 8, 0, 15, 0),
66 	SOC_SINGLE("Capture Switch", AC97_REC_GAIN, 15, 1, 1),
67 };
68 
69 static const char *wm9705_mic[] = {"Mic 1", "Mic 2"};
70 static const char *wm9705_rec_sel[] = {"Mic", "CD", "NC", "NC",
71 	"Line", "Stereo Mix", "Mono Mix", "Phone"};
72 
73 static SOC_ENUM_SINGLE_DECL(wm9705_enum_mic,
74 			    AC97_GENERAL_PURPOSE, 8, wm9705_mic);
75 static SOC_ENUM_SINGLE_DECL(wm9705_enum_rec_l,
76 			    AC97_REC_SEL, 8, wm9705_rec_sel);
77 static SOC_ENUM_SINGLE_DECL(wm9705_enum_rec_r,
78 			    AC97_REC_SEL, 0, wm9705_rec_sel);
79 
80 /* Headphone Mixer */
81 static const struct snd_kcontrol_new wm9705_hp_mixer_controls[] = {
82 	SOC_DAPM_SINGLE("PCBeep Playback Switch", AC97_PC_BEEP, 15, 1, 1),
83 	SOC_DAPM_SINGLE("CD Playback Switch", AC97_CD, 15, 1, 1),
84 	SOC_DAPM_SINGLE("Mic Playback Switch", AC97_MIC, 15, 1, 1),
85 	SOC_DAPM_SINGLE("Phone Playback Switch", AC97_PHONE, 15, 1, 1),
86 	SOC_DAPM_SINGLE("Line Playback Switch", AC97_LINE, 15, 1, 1),
87 };
88 
89 /* Mic source */
90 static const struct snd_kcontrol_new wm9705_mic_src_controls =
91 	SOC_DAPM_ENUM("Route", wm9705_enum_mic);
92 
93 /* Capture source */
94 static const struct snd_kcontrol_new wm9705_capture_selectl_controls =
95 	SOC_DAPM_ENUM("Route", wm9705_enum_rec_l);
96 static const struct snd_kcontrol_new wm9705_capture_selectr_controls =
97 	SOC_DAPM_ENUM("Route", wm9705_enum_rec_r);
98 
99 /* DAPM widgets */
100 static const struct snd_soc_dapm_widget wm9705_dapm_widgets[] = {
101 	SND_SOC_DAPM_MUX("Mic Source", SND_SOC_NOPM, 0, 0,
102 		&wm9705_mic_src_controls),
103 	SND_SOC_DAPM_MUX("Left Capture Source", SND_SOC_NOPM, 0, 0,
104 		&wm9705_capture_selectl_controls),
105 	SND_SOC_DAPM_MUX("Right Capture Source", SND_SOC_NOPM, 0, 0,
106 		&wm9705_capture_selectr_controls),
107 	SND_SOC_DAPM_DAC("Left DAC", "Left HiFi Playback",
108 		SND_SOC_NOPM, 0, 0),
109 	SND_SOC_DAPM_DAC("Right DAC", "Right HiFi Playback",
110 		SND_SOC_NOPM, 0, 0),
111 	SND_SOC_DAPM_MIXER_NAMED_CTL("HP Mixer", SND_SOC_NOPM, 0, 0,
112 		&wm9705_hp_mixer_controls[0],
113 		ARRAY_SIZE(wm9705_hp_mixer_controls)),
114 	SND_SOC_DAPM_MIXER("Mono Mixer", SND_SOC_NOPM, 0, 0, NULL, 0),
115 	SND_SOC_DAPM_ADC("Left ADC", "Left HiFi Capture", SND_SOC_NOPM, 0, 0),
116 	SND_SOC_DAPM_ADC("Right ADC", "Right HiFi Capture", SND_SOC_NOPM, 0, 0),
117 	SND_SOC_DAPM_PGA("Headphone PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
118 	SND_SOC_DAPM_PGA("Speaker PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
119 	SND_SOC_DAPM_PGA("Line PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
120 	SND_SOC_DAPM_PGA("Line out PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
121 	SND_SOC_DAPM_PGA("Mono PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
122 	SND_SOC_DAPM_PGA("Phone PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
123 	SND_SOC_DAPM_PGA("Mic PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
124 	SND_SOC_DAPM_PGA("PCBEEP PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
125 	SND_SOC_DAPM_PGA("CD PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
126 	SND_SOC_DAPM_PGA("ADC PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
127 	SND_SOC_DAPM_OUTPUT("HPOUTL"),
128 	SND_SOC_DAPM_OUTPUT("HPOUTR"),
129 	SND_SOC_DAPM_OUTPUT("LOUT"),
130 	SND_SOC_DAPM_OUTPUT("ROUT"),
131 	SND_SOC_DAPM_OUTPUT("MONOOUT"),
132 	SND_SOC_DAPM_INPUT("PHONE"),
133 	SND_SOC_DAPM_INPUT("LINEINL"),
134 	SND_SOC_DAPM_INPUT("LINEINR"),
135 	SND_SOC_DAPM_INPUT("CDINL"),
136 	SND_SOC_DAPM_INPUT("CDINR"),
137 	SND_SOC_DAPM_INPUT("PCBEEP"),
138 	SND_SOC_DAPM_INPUT("MIC1"),
139 	SND_SOC_DAPM_INPUT("MIC2"),
140 };
141 
142 /* Audio map
143  * WM9705 has no switches to disable the route from the inputs to the HP mixer
144  * so in order to prevent active inputs from forcing the audio outputs to be
145  * constantly enabled, we use the mutes on those inputs to simulate such
146  * controls.
147  */
148 static const struct snd_soc_dapm_route wm9705_audio_map[] = {
149 	/* HP mixer */
150 	{"HP Mixer", "PCBeep Playback Switch", "PCBEEP PGA"},
151 	{"HP Mixer", "CD Playback Switch", "CD PGA"},
152 	{"HP Mixer", "Mic Playback Switch", "Mic PGA"},
153 	{"HP Mixer", "Phone Playback Switch", "Phone PGA"},
154 	{"HP Mixer", "Line Playback Switch", "Line PGA"},
155 	{"HP Mixer", NULL, "Left DAC"},
156 	{"HP Mixer", NULL, "Right DAC"},
157 
158 	/* mono mixer */
159 	{"Mono Mixer", NULL, "HP Mixer"},
160 
161 	/* outputs */
162 	{"Headphone PGA", NULL, "HP Mixer"},
163 	{"HPOUTL", NULL, "Headphone PGA"},
164 	{"HPOUTR", NULL, "Headphone PGA"},
165 	{"Line out PGA", NULL, "HP Mixer"},
166 	{"LOUT", NULL, "Line out PGA"},
167 	{"ROUT", NULL, "Line out PGA"},
168 	{"Mono PGA", NULL, "Mono Mixer"},
169 	{"MONOOUT", NULL, "Mono PGA"},
170 
171 	/* inputs */
172 	{"CD PGA", NULL, "CDINL"},
173 	{"CD PGA", NULL, "CDINR"},
174 	{"Line PGA", NULL, "LINEINL"},
175 	{"Line PGA", NULL, "LINEINR"},
176 	{"Phone PGA", NULL, "PHONE"},
177 	{"Mic Source", "Mic 1", "MIC1"},
178 	{"Mic Source", "Mic 2", "MIC2"},
179 	{"Mic PGA", NULL, "Mic Source"},
180 	{"PCBEEP PGA", NULL, "PCBEEP"},
181 
182 	/* Left capture selector */
183 	{"Left Capture Source", "Mic", "Mic Source"},
184 	{"Left Capture Source", "CD", "CDINL"},
185 	{"Left Capture Source", "Line", "LINEINL"},
186 	{"Left Capture Source", "Stereo Mix", "HP Mixer"},
187 	{"Left Capture Source", "Mono Mix", "HP Mixer"},
188 	{"Left Capture Source", "Phone", "PHONE"},
189 
190 	/* Right capture source */
191 	{"Right Capture Source", "Mic", "Mic Source"},
192 	{"Right Capture Source", "CD", "CDINR"},
193 	{"Right Capture Source", "Line", "LINEINR"},
194 	{"Right Capture Source", "Stereo Mix", "HP Mixer"},
195 	{"Right Capture Source", "Mono Mix", "HP Mixer"},
196 	{"Right Capture Source", "Phone", "PHONE"},
197 
198 	{"ADC PGA", NULL, "Left Capture Source"},
199 	{"ADC PGA", NULL, "Right Capture Source"},
200 
201 	/* ADC's */
202 	{"Left ADC",  NULL, "ADC PGA"},
203 	{"Right ADC", NULL, "ADC PGA"},
204 };
205 
206 /* We use a register cache to enhance read performance. */
207 static unsigned int ac97_read(struct snd_soc_codec *codec, unsigned int reg)
208 {
209 	struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);
210 	u16 *cache = codec->reg_cache;
211 
212 	switch (reg) {
213 	case AC97_RESET:
214 	case AC97_VENDOR_ID1:
215 	case AC97_VENDOR_ID2:
216 		return soc_ac97_ops->read(ac97, reg);
217 	default:
218 		reg = reg >> 1;
219 
220 		if (reg >= (ARRAY_SIZE(wm9705_reg)))
221 			return -EIO;
222 
223 		return cache[reg];
224 	}
225 }
226 
227 static int ac97_write(struct snd_soc_codec *codec, unsigned int reg,
228 	unsigned int val)
229 {
230 	struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);
231 	u16 *cache = codec->reg_cache;
232 
233 	soc_ac97_ops->write(ac97, reg, val);
234 	reg = reg >> 1;
235 	if (reg < (ARRAY_SIZE(wm9705_reg)))
236 		cache[reg] = val;
237 
238 	return 0;
239 }
240 
241 static int ac97_prepare(struct snd_pcm_substream *substream,
242 			struct snd_soc_dai *dai)
243 {
244 	struct snd_soc_codec *codec = dai->codec;
245 	int reg;
246 	u16 vra;
247 
248 	vra = ac97_read(codec, AC97_EXTENDED_STATUS);
249 	ac97_write(codec, AC97_EXTENDED_STATUS, vra | 0x1);
250 
251 	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
252 		reg = AC97_PCM_FRONT_DAC_RATE;
253 	else
254 		reg = AC97_PCM_LR_ADC_RATE;
255 
256 	return ac97_write(codec, reg, substream->runtime->rate);
257 }
258 
259 #define WM9705_AC97_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 | \
260 			SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | \
261 			SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | \
262 			SNDRV_PCM_RATE_48000)
263 
264 static const struct snd_soc_dai_ops wm9705_dai_ops = {
265 	.prepare	= ac97_prepare,
266 };
267 
268 static struct snd_soc_dai_driver wm9705_dai[] = {
269 	{
270 		.name = "wm9705-hifi",
271 		.playback = {
272 			.stream_name = "HiFi Playback",
273 			.channels_min = 1,
274 			.channels_max = 2,
275 			.rates = WM9705_AC97_RATES,
276 			.formats = SND_SOC_STD_AC97_FMTS,
277 		},
278 		.capture = {
279 			.stream_name = "HiFi Capture",
280 			.channels_min = 1,
281 			.channels_max = 2,
282 			.rates = WM9705_AC97_RATES,
283 			.formats = SND_SOC_STD_AC97_FMTS,
284 		},
285 		.ops = &wm9705_dai_ops,
286 	},
287 	{
288 		.name = "wm9705-aux",
289 		.playback = {
290 			.stream_name = "Aux Playback",
291 			.channels_min = 1,
292 			.channels_max = 1,
293 			.rates = WM9705_AC97_RATES,
294 			.formats = SNDRV_PCM_FMTBIT_S16_LE,
295 		},
296 	}
297 };
298 
299 #ifdef CONFIG_PM
300 static int wm9705_soc_suspend(struct snd_soc_codec *codec)
301 {
302 	struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);
303 
304 	soc_ac97_ops->write(ac97, AC97_POWERDOWN, 0xffff);
305 
306 	return 0;
307 }
308 
309 static int wm9705_soc_resume(struct snd_soc_codec *codec)
310 {
311 	struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);
312 	int i, ret;
313 	u16 *cache = codec->reg_cache;
314 
315 	ret = snd_ac97_reset(ac97, true, WM9705_VENDOR_ID,
316 		WM9705_VENDOR_ID_MASK);
317 	if (ret < 0)
318 		return ret;
319 
320 	for (i = 2; i < ARRAY_SIZE(wm9705_reg) << 1; i += 2) {
321 		soc_ac97_ops->write(ac97, i, cache[i>>1]);
322 	}
323 
324 	return 0;
325 }
326 #else
327 #define wm9705_soc_suspend NULL
328 #define wm9705_soc_resume NULL
329 #endif
330 
331 static int wm9705_soc_probe(struct snd_soc_codec *codec)
332 {
333 	struct snd_ac97 *ac97;
334 
335 	ac97 = snd_soc_new_ac97_codec(codec, WM9705_VENDOR_ID,
336 		WM9705_VENDOR_ID_MASK);
337 	if (IS_ERR(ac97)) {
338 		dev_err(codec->dev, "Failed to register AC97 codec\n");
339 		return PTR_ERR(ac97);
340 	}
341 
342 	snd_soc_codec_set_drvdata(codec, ac97);
343 
344 	return 0;
345 }
346 
347 static int wm9705_soc_remove(struct snd_soc_codec *codec)
348 {
349 	struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);
350 
351 	snd_soc_free_ac97_codec(ac97);
352 	return 0;
353 }
354 
355 static const struct snd_soc_codec_driver soc_codec_dev_wm9705 = {
356 	.probe = 	wm9705_soc_probe,
357 	.remove = 	wm9705_soc_remove,
358 	.suspend =	wm9705_soc_suspend,
359 	.resume =	wm9705_soc_resume,
360 	.read = ac97_read,
361 	.write = ac97_write,
362 	.reg_cache_size = ARRAY_SIZE(wm9705_reg),
363 	.reg_word_size = sizeof(u16),
364 	.reg_cache_step = 2,
365 	.reg_cache_default = wm9705_reg,
366 
367 	.component_driver = {
368 		.controls		= wm9705_snd_ac97_controls,
369 		.num_controls		= ARRAY_SIZE(wm9705_snd_ac97_controls),
370 		.dapm_widgets		= wm9705_dapm_widgets,
371 		.num_dapm_widgets	= ARRAY_SIZE(wm9705_dapm_widgets),
372 		.dapm_routes		= wm9705_audio_map,
373 		.num_dapm_routes	= ARRAY_SIZE(wm9705_audio_map),
374 	},
375 };
376 
377 static int wm9705_probe(struct platform_device *pdev)
378 {
379 	return snd_soc_register_codec(&pdev->dev,
380 			&soc_codec_dev_wm9705, wm9705_dai, ARRAY_SIZE(wm9705_dai));
381 }
382 
383 static int wm9705_remove(struct platform_device *pdev)
384 {
385 	snd_soc_unregister_codec(&pdev->dev);
386 	return 0;
387 }
388 
389 static struct platform_driver wm9705_codec_driver = {
390 	.driver = {
391 			.name = "wm9705-codec",
392 	},
393 
394 	.probe = wm9705_probe,
395 	.remove = wm9705_remove,
396 };
397 
398 module_platform_driver(wm9705_codec_driver);
399 
400 MODULE_DESCRIPTION("ASoC WM9705 driver");
401 MODULE_AUTHOR("Ian Molton");
402 MODULE_LICENSE("GPL v2");
403