1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * wm9705.c  --  ALSA Soc WM9705 codec support
4 *
5 * Copyright 2008 Ian Molton <spyro@f2s.com>
6 */
7
8#include <linux/init.h>
9#include <linux/slab.h>
10#include <linux/mfd/wm97xx.h>
11#include <linux/module.h>
12#include <linux/kernel.h>
13#include <linux/device.h>
14#include <linux/regmap.h>
15#include <sound/core.h>
16#include <sound/pcm.h>
17#include <sound/ac97_codec.h>
18#include <sound/ac97/codec.h>
19#include <sound/ac97/compat.h>
20#include <sound/initval.h>
21#include <sound/soc.h>
22
23#define WM9705_VENDOR_ID 0x574d4c05
24#define WM9705_VENDOR_ID_MASK 0xffffffff
25
26struct wm9705_priv {
27	struct snd_ac97 *ac97;
28	struct wm97xx_platform_data *mfd_pdata;
29};
30
31static const struct reg_default wm9705_reg_defaults[] = {
32	{ 0x02, 0x8000 },
33	{ 0x04, 0x8000 },
34	{ 0x06, 0x8000 },
35	{ 0x0a, 0x8000 },
36	{ 0x0c, 0x8008 },
37	{ 0x0e, 0x8008 },
38	{ 0x10, 0x8808 },
39	{ 0x12, 0x8808 },
40	{ 0x14, 0x8808 },
41	{ 0x16, 0x8808 },
42	{ 0x18, 0x8808 },
43	{ 0x1a, 0x0000 },
44	{ 0x1c, 0x8000 },
45	{ 0x20, 0x0000 },
46	{ 0x22, 0x0000 },
47	{ 0x26, 0x000f },
48	{ 0x28, 0x0605 },
49	{ 0x2a, 0x0000 },
50	{ 0x2c, 0xbb80 },
51	{ 0x32, 0xbb80 },
52	{ 0x34, 0x2000 },
53	{ 0x5a, 0x0000 },
54	{ 0x5c, 0x0000 },
55	{ 0x72, 0x0808 },
56	{ 0x74, 0x0000 },
57	{ 0x76, 0x0006 },
58	{ 0x78, 0x0000 },
59	{ 0x7a, 0x0000 },
60};
61
62static const struct regmap_config wm9705_regmap_config = {
63	.reg_bits = 16,
64	.reg_stride = 2,
65	.val_bits = 16,
66	.max_register = 0x7e,
67	.cache_type = REGCACHE_MAPLE,
68
69	.volatile_reg = regmap_ac97_default_volatile,
70
71	.reg_defaults = wm9705_reg_defaults,
72	.num_reg_defaults = ARRAY_SIZE(wm9705_reg_defaults),
73};
74
75static const struct snd_kcontrol_new wm9705_snd_ac97_controls[] = {
76	SOC_DOUBLE("Master Playback Volume", AC97_MASTER, 8, 0, 31, 1),
77	SOC_SINGLE("Master Playback Switch", AC97_MASTER, 15, 1, 1),
78	SOC_DOUBLE("Headphone Playback Volume", AC97_HEADPHONE, 8, 0, 31, 1),
79	SOC_SINGLE("Headphone Playback Switch", AC97_HEADPHONE, 15, 1, 1),
80	SOC_DOUBLE("PCM Playback Volume", AC97_PCM, 8, 0, 31, 1),
81	SOC_SINGLE("PCM Playback Switch", AC97_PCM, 15, 1, 1),
82	SOC_SINGLE("Mono Playback Volume", AC97_MASTER_MONO, 0, 31, 1),
83	SOC_SINGLE("Mono Playback Switch", AC97_MASTER_MONO, 15, 1, 1),
84	SOC_SINGLE("PCBeep Playback Volume", AC97_PC_BEEP, 1, 15, 1),
85	SOC_SINGLE("Phone Playback Volume", AC97_PHONE, 0, 31, 1),
86	SOC_DOUBLE("Line Playback Volume", AC97_LINE, 8, 0, 31, 1),
87	SOC_DOUBLE("CD Playback Volume", AC97_CD, 8, 0, 31, 1),
88	SOC_SINGLE("Mic Playback Volume", AC97_MIC, 0, 31, 1),
89	SOC_SINGLE("Mic 20dB Boost Switch", AC97_MIC, 6, 1, 0),
90	SOC_DOUBLE("Capture Volume", AC97_REC_GAIN, 8, 0, 15, 0),
91	SOC_SINGLE("Capture Switch", AC97_REC_GAIN, 15, 1, 1),
92};
93
94static const char *wm9705_mic[] = {"Mic 1", "Mic 2"};
95static const char *wm9705_rec_sel[] = {"Mic", "CD", "NC", "NC",
96	"Line", "Stereo Mix", "Mono Mix", "Phone"};
97
98static SOC_ENUM_SINGLE_DECL(wm9705_enum_mic,
99			    AC97_GENERAL_PURPOSE, 8, wm9705_mic);
100static SOC_ENUM_SINGLE_DECL(wm9705_enum_rec_l,
101			    AC97_REC_SEL, 8, wm9705_rec_sel);
102static SOC_ENUM_SINGLE_DECL(wm9705_enum_rec_r,
103			    AC97_REC_SEL, 0, wm9705_rec_sel);
104
105/* Headphone Mixer */
106static const struct snd_kcontrol_new wm9705_hp_mixer_controls[] = {
107	SOC_DAPM_SINGLE("PCBeep Playback Switch", AC97_PC_BEEP, 15, 1, 1),
108	SOC_DAPM_SINGLE("CD Playback Switch", AC97_CD, 15, 1, 1),
109	SOC_DAPM_SINGLE("Mic Playback Switch", AC97_MIC, 15, 1, 1),
110	SOC_DAPM_SINGLE("Phone Playback Switch", AC97_PHONE, 15, 1, 1),
111	SOC_DAPM_SINGLE("Line Playback Switch", AC97_LINE, 15, 1, 1),
112};
113
114/* Mic source */
115static const struct snd_kcontrol_new wm9705_mic_src_controls =
116	SOC_DAPM_ENUM("Route", wm9705_enum_mic);
117
118/* Capture source */
119static const struct snd_kcontrol_new wm9705_capture_selectl_controls =
120	SOC_DAPM_ENUM("Route", wm9705_enum_rec_l);
121static const struct snd_kcontrol_new wm9705_capture_selectr_controls =
122	SOC_DAPM_ENUM("Route", wm9705_enum_rec_r);
123
124/* DAPM widgets */
125static const struct snd_soc_dapm_widget wm9705_dapm_widgets[] = {
126	SND_SOC_DAPM_MUX("Mic Source", SND_SOC_NOPM, 0, 0,
127		&wm9705_mic_src_controls),
128	SND_SOC_DAPM_MUX("Left Capture Source", SND_SOC_NOPM, 0, 0,
129		&wm9705_capture_selectl_controls),
130	SND_SOC_DAPM_MUX("Right Capture Source", SND_SOC_NOPM, 0, 0,
131		&wm9705_capture_selectr_controls),
132	SND_SOC_DAPM_DAC("Left DAC", "Left HiFi Playback",
133		SND_SOC_NOPM, 0, 0),
134	SND_SOC_DAPM_DAC("Right DAC", "Right HiFi Playback",
135		SND_SOC_NOPM, 0, 0),
136	SND_SOC_DAPM_MIXER_NAMED_CTL("HP Mixer", SND_SOC_NOPM, 0, 0,
137		&wm9705_hp_mixer_controls[0],
138		ARRAY_SIZE(wm9705_hp_mixer_controls)),
139	SND_SOC_DAPM_MIXER("Mono Mixer", SND_SOC_NOPM, 0, 0, NULL, 0),
140	SND_SOC_DAPM_ADC("Left ADC", "Left HiFi Capture", SND_SOC_NOPM, 0, 0),
141	SND_SOC_DAPM_ADC("Right ADC", "Right HiFi Capture", SND_SOC_NOPM, 0, 0),
142	SND_SOC_DAPM_PGA("Headphone PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
143	SND_SOC_DAPM_PGA("Speaker PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
144	SND_SOC_DAPM_PGA("Line PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
145	SND_SOC_DAPM_PGA("Line out PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
146	SND_SOC_DAPM_PGA("Mono PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
147	SND_SOC_DAPM_PGA("Phone PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
148	SND_SOC_DAPM_PGA("Mic PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
149	SND_SOC_DAPM_PGA("PCBEEP PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
150	SND_SOC_DAPM_PGA("CD PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
151	SND_SOC_DAPM_PGA("ADC PGA", SND_SOC_NOPM, 0, 0, NULL, 0),
152	SND_SOC_DAPM_OUTPUT("HPOUTL"),
153	SND_SOC_DAPM_OUTPUT("HPOUTR"),
154	SND_SOC_DAPM_OUTPUT("LOUT"),
155	SND_SOC_DAPM_OUTPUT("ROUT"),
156	SND_SOC_DAPM_OUTPUT("MONOOUT"),
157	SND_SOC_DAPM_INPUT("PHONE"),
158	SND_SOC_DAPM_INPUT("LINEINL"),
159	SND_SOC_DAPM_INPUT("LINEINR"),
160	SND_SOC_DAPM_INPUT("CDINL"),
161	SND_SOC_DAPM_INPUT("CDINR"),
162	SND_SOC_DAPM_INPUT("PCBEEP"),
163	SND_SOC_DAPM_INPUT("MIC1"),
164	SND_SOC_DAPM_INPUT("MIC2"),
165};
166
167/* Audio map
168 * WM9705 has no switches to disable the route from the inputs to the HP mixer
169 * so in order to prevent active inputs from forcing the audio outputs to be
170 * constantly enabled, we use the mutes on those inputs to simulate such
171 * controls.
172 */
173static const struct snd_soc_dapm_route wm9705_audio_map[] = {
174	/* HP mixer */
175	{"HP Mixer", "PCBeep Playback Switch", "PCBEEP PGA"},
176	{"HP Mixer", "CD Playback Switch", "CD PGA"},
177	{"HP Mixer", "Mic Playback Switch", "Mic PGA"},
178	{"HP Mixer", "Phone Playback Switch", "Phone PGA"},
179	{"HP Mixer", "Line Playback Switch", "Line PGA"},
180	{"HP Mixer", NULL, "Left DAC"},
181	{"HP Mixer", NULL, "Right DAC"},
182
183	/* mono mixer */
184	{"Mono Mixer", NULL, "HP Mixer"},
185
186	/* outputs */
187	{"Headphone PGA", NULL, "HP Mixer"},
188	{"HPOUTL", NULL, "Headphone PGA"},
189	{"HPOUTR", NULL, "Headphone PGA"},
190	{"Line out PGA", NULL, "HP Mixer"},
191	{"LOUT", NULL, "Line out PGA"},
192	{"ROUT", NULL, "Line out PGA"},
193	{"Mono PGA", NULL, "Mono Mixer"},
194	{"MONOOUT", NULL, "Mono PGA"},
195
196	/* inputs */
197	{"CD PGA", NULL, "CDINL"},
198	{"CD PGA", NULL, "CDINR"},
199	{"Line PGA", NULL, "LINEINL"},
200	{"Line PGA", NULL, "LINEINR"},
201	{"Phone PGA", NULL, "PHONE"},
202	{"Mic Source", "Mic 1", "MIC1"},
203	{"Mic Source", "Mic 2", "MIC2"},
204	{"Mic PGA", NULL, "Mic Source"},
205	{"PCBEEP PGA", NULL, "PCBEEP"},
206
207	/* Left capture selector */
208	{"Left Capture Source", "Mic", "Mic Source"},
209	{"Left Capture Source", "CD", "CDINL"},
210	{"Left Capture Source", "Line", "LINEINL"},
211	{"Left Capture Source", "Stereo Mix", "HP Mixer"},
212	{"Left Capture Source", "Mono Mix", "HP Mixer"},
213	{"Left Capture Source", "Phone", "PHONE"},
214
215	/* Right capture source */
216	{"Right Capture Source", "Mic", "Mic Source"},
217	{"Right Capture Source", "CD", "CDINR"},
218	{"Right Capture Source", "Line", "LINEINR"},
219	{"Right Capture Source", "Stereo Mix", "HP Mixer"},
220	{"Right Capture Source", "Mono Mix", "HP Mixer"},
221	{"Right Capture Source", "Phone", "PHONE"},
222
223	{"ADC PGA", NULL, "Left Capture Source"},
224	{"ADC PGA", NULL, "Right Capture Source"},
225
226	/* ADC's */
227	{"Left ADC",  NULL, "ADC PGA"},
228	{"Right ADC", NULL, "ADC PGA"},
229};
230
231static int ac97_prepare(struct snd_pcm_substream *substream,
232			struct snd_soc_dai *dai)
233{
234	struct snd_soc_component *component = dai->component;
235	int reg;
236
237	snd_soc_component_update_bits(component, AC97_EXTENDED_STATUS, 0x1, 0x1);
238
239	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
240		reg = AC97_PCM_FRONT_DAC_RATE;
241	else
242		reg = AC97_PCM_LR_ADC_RATE;
243
244	return snd_soc_component_write(component, reg, substream->runtime->rate);
245}
246
247#define WM9705_AC97_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 | \
248			SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | \
249			SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | \
250			SNDRV_PCM_RATE_48000)
251
252static const struct snd_soc_dai_ops wm9705_dai_ops = {
253	.prepare	= ac97_prepare,
254};
255
256static struct snd_soc_dai_driver wm9705_dai[] = {
257	{
258		.name = "wm9705-hifi",
259		.playback = {
260			.stream_name = "HiFi Playback",
261			.channels_min = 1,
262			.channels_max = 2,
263			.rates = WM9705_AC97_RATES,
264			.formats = SND_SOC_STD_AC97_FMTS,
265		},
266		.capture = {
267			.stream_name = "HiFi Capture",
268			.channels_min = 1,
269			.channels_max = 2,
270			.rates = WM9705_AC97_RATES,
271			.formats = SND_SOC_STD_AC97_FMTS,
272		},
273		.ops = &wm9705_dai_ops,
274	},
275	{
276		.name = "wm9705-aux",
277		.playback = {
278			.stream_name = "Aux Playback",
279			.channels_min = 1,
280			.channels_max = 1,
281			.rates = WM9705_AC97_RATES,
282			.formats = SNDRV_PCM_FMTBIT_S16_LE,
283		},
284	}
285};
286
287#ifdef CONFIG_PM
288static int wm9705_soc_suspend(struct snd_soc_component *component)
289{
290	regcache_cache_bypass(component->regmap, true);
291	snd_soc_component_write(component, AC97_POWERDOWN, 0xffff);
292	regcache_cache_bypass(component->regmap, false);
293
294	return 0;
295}
296
297static int wm9705_soc_resume(struct snd_soc_component *component)
298{
299	struct wm9705_priv *wm9705 = snd_soc_component_get_drvdata(component);
300	int ret;
301
302	ret = snd_ac97_reset(wm9705->ac97, true, WM9705_VENDOR_ID,
303		WM9705_VENDOR_ID_MASK);
304	if (ret < 0)
305		return ret;
306
307	snd_soc_component_cache_sync(component);
308
309	return 0;
310}
311#else
312#define wm9705_soc_suspend NULL
313#define wm9705_soc_resume NULL
314#endif
315
316static int wm9705_soc_probe(struct snd_soc_component *component)
317{
318	struct wm9705_priv *wm9705 = snd_soc_component_get_drvdata(component);
319	struct regmap *regmap;
320
321	if (wm9705->mfd_pdata) {
322		wm9705->ac97 = wm9705->mfd_pdata->ac97;
323		regmap = wm9705->mfd_pdata->regmap;
324	} else if (IS_ENABLED(CONFIG_SND_SOC_AC97_BUS)) {
325		wm9705->ac97 = snd_soc_new_ac97_component(component, WM9705_VENDOR_ID,
326						      WM9705_VENDOR_ID_MASK);
327		if (IS_ERR(wm9705->ac97)) {
328			dev_err(component->dev, "Failed to register AC97 codec\n");
329			return PTR_ERR(wm9705->ac97);
330		}
331
332		regmap = regmap_init_ac97(wm9705->ac97, &wm9705_regmap_config);
333		if (IS_ERR(regmap)) {
334			snd_soc_free_ac97_component(wm9705->ac97);
335			return PTR_ERR(regmap);
336		}
337	} else {
338		return -ENXIO;
339	}
340
341	snd_soc_component_set_drvdata(component, wm9705->ac97);
342	snd_soc_component_init_regmap(component, regmap);
343
344	return 0;
345}
346
347static void wm9705_soc_remove(struct snd_soc_component *component)
348{
349	struct wm9705_priv *wm9705 = snd_soc_component_get_drvdata(component);
350
351	if (IS_ENABLED(CONFIG_SND_SOC_AC97_BUS) && !wm9705->mfd_pdata) {
352		snd_soc_component_exit_regmap(component);
353		snd_soc_free_ac97_component(wm9705->ac97);
354	}
355}
356
357static const struct snd_soc_component_driver soc_component_dev_wm9705 = {
358	.probe			= wm9705_soc_probe,
359	.remove			= wm9705_soc_remove,
360	.suspend		= wm9705_soc_suspend,
361	.resume			= wm9705_soc_resume,
362	.controls		= wm9705_snd_ac97_controls,
363	.num_controls		= ARRAY_SIZE(wm9705_snd_ac97_controls),
364	.dapm_widgets		= wm9705_dapm_widgets,
365	.num_dapm_widgets	= ARRAY_SIZE(wm9705_dapm_widgets),
366	.dapm_routes		= wm9705_audio_map,
367	.num_dapm_routes	= ARRAY_SIZE(wm9705_audio_map),
368	.idle_bias_on		= 1,
369	.use_pmdown_time	= 1,
370	.endianness		= 1,
371};
372
373static int wm9705_probe(struct platform_device *pdev)
374{
375	struct wm9705_priv *wm9705;
376
377	wm9705 = devm_kzalloc(&pdev->dev, sizeof(*wm9705), GFP_KERNEL);
378	if (wm9705 == NULL)
379		return -ENOMEM;
380
381	wm9705->mfd_pdata = dev_get_platdata(&pdev->dev);
382	platform_set_drvdata(pdev, wm9705);
383
384	return devm_snd_soc_register_component(&pdev->dev,
385			&soc_component_dev_wm9705, wm9705_dai, ARRAY_SIZE(wm9705_dai));
386}
387
388static struct platform_driver wm9705_codec_driver = {
389	.driver = {
390			.name = "wm9705-codec",
391	},
392
393	.probe = wm9705_probe,
394};
395
396module_platform_driver(wm9705_codec_driver);
397
398MODULE_DESCRIPTION("ASoC WM9705 driver");
399MODULE_AUTHOR("Ian Molton");
400MODULE_LICENSE("GPL v2");
401