1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * stac9766.c  --  ALSA SoC STAC9766 codec support
4 *
5 * Copyright 2009 Jon Smirl, Digispeaker
6 * Author: Jon Smirl <jonsmirl@gmail.com>
7 *
8 *  Features:-
9 *
10 *   o Support for AC97 Codec, S/PDIF
11 */
12
13#include <linux/init.h>
14#include <linux/slab.h>
15#include <linux/module.h>
16#include <linux/device.h>
17#include <linux/regmap.h>
18#include <sound/core.h>
19#include <sound/pcm.h>
20#include <sound/ac97_codec.h>
21#include <sound/initval.h>
22#include <sound/pcm_params.h>
23#include <sound/soc.h>
24#include <sound/tlv.h>
25
26#define STAC9766_VENDOR_ID 0x83847666
27#define STAC9766_VENDOR_ID_MASK 0xffffffff
28
29#define AC97_STAC_DA_CONTROL 0x6A
30#define AC97_STAC_ANALOG_SPECIAL 0x6E
31#define AC97_STAC_STEREO_MIC 0x78
32
33static const struct reg_default stac9766_reg_defaults[] = {
34	{ 0x02, 0x8000 },
35	{ 0x04, 0x8000 },
36	{ 0x06, 0x8000 },
37	{ 0x0a, 0x0000 },
38	{ 0x0c, 0x8008 },
39	{ 0x0e, 0x8008 },
40	{ 0x10, 0x8808 },
41	{ 0x12, 0x8808 },
42	{ 0x14, 0x8808 },
43	{ 0x16, 0x8808 },
44	{ 0x18, 0x8808 },
45	{ 0x1a, 0x0000 },
46	{ 0x1c, 0x8000 },
47	{ 0x20, 0x0000 },
48	{ 0x22, 0x0000 },
49	{ 0x28, 0x0a05 },
50	{ 0x2c, 0xbb80 },
51	{ 0x32, 0xbb80 },
52	{ 0x3a, 0x2000 },
53	{ 0x3e, 0x0100 },
54	{ 0x4c, 0x0300 },
55	{ 0x4e, 0xffff },
56	{ 0x50, 0x0000 },
57	{ 0x52, 0x0000 },
58	{ 0x54, 0x0000 },
59	{ 0x6a, 0x0000 },
60	{ 0x6e, 0x1000 },
61	{ 0x72, 0x0000 },
62	{ 0x78, 0x0000 },
63};
64
65static const struct regmap_config stac9766_regmap_config = {
66	.reg_bits = 16,
67	.reg_stride = 2,
68	.val_bits = 16,
69	.max_register = 0x78,
70	.cache_type = REGCACHE_MAPLE,
71
72	.volatile_reg = regmap_ac97_default_volatile,
73
74	.reg_defaults = stac9766_reg_defaults,
75	.num_reg_defaults = ARRAY_SIZE(stac9766_reg_defaults),
76};
77
78static const char *stac9766_record_mux[] = {"Mic", "CD", "Video", "AUX",
79			"Line", "Stereo Mix", "Mono Mix", "Phone"};
80static const char *stac9766_mono_mux[] = {"Mix", "Mic"};
81static const char *stac9766_mic_mux[] = {"Mic1", "Mic2"};
82static const char *stac9766_SPDIF_mux[] = {"PCM", "ADC Record"};
83static const char *stac9766_popbypass_mux[] = {"Normal", "Bypass Mixer"};
84static const char *stac9766_record_all_mux[] = {"All analog",
85	"Analog plus DAC"};
86static const char *stac9766_boost1[] = {"0dB", "10dB"};
87static const char *stac9766_boost2[] = {"0dB", "20dB"};
88static const char *stac9766_stereo_mic[] = {"Off", "On"};
89
90static SOC_ENUM_DOUBLE_DECL(stac9766_record_enum,
91			    AC97_REC_SEL, 8, 0, stac9766_record_mux);
92static SOC_ENUM_SINGLE_DECL(stac9766_mono_enum,
93			    AC97_GENERAL_PURPOSE, 9, stac9766_mono_mux);
94static SOC_ENUM_SINGLE_DECL(stac9766_mic_enum,
95			    AC97_GENERAL_PURPOSE, 8, stac9766_mic_mux);
96static SOC_ENUM_SINGLE_DECL(stac9766_SPDIF_enum,
97			    AC97_STAC_DA_CONTROL, 1, stac9766_SPDIF_mux);
98static SOC_ENUM_SINGLE_DECL(stac9766_popbypass_enum,
99			    AC97_GENERAL_PURPOSE, 15, stac9766_popbypass_mux);
100static SOC_ENUM_SINGLE_DECL(stac9766_record_all_enum,
101			    AC97_STAC_ANALOG_SPECIAL, 12,
102			    stac9766_record_all_mux);
103static SOC_ENUM_SINGLE_DECL(stac9766_boost1_enum,
104			    AC97_MIC, 6, stac9766_boost1); /* 0/10dB */
105static SOC_ENUM_SINGLE_DECL(stac9766_boost2_enum,
106			    AC97_STAC_ANALOG_SPECIAL, 2, stac9766_boost2); /* 0/20dB */
107static SOC_ENUM_SINGLE_DECL(stac9766_stereo_mic_enum,
108			    AC97_STAC_STEREO_MIC, 2, stac9766_stereo_mic);
109
110static const SNDRV_CTL_TLVD_DECLARE_DB_SCALE(master_tlv, -4650, 150, 0);
111static const SNDRV_CTL_TLVD_DECLARE_DB_SCALE(record_tlv,     0, 150, 0);
112static const SNDRV_CTL_TLVD_DECLARE_DB_SCALE(beep_tlv,   -4500, 300, 0);
113static const SNDRV_CTL_TLVD_DECLARE_DB_SCALE(mix_tlv,    -3450, 150, 0);
114
115static const struct snd_kcontrol_new stac9766_snd_ac97_controls[] = {
116	SOC_DOUBLE_TLV("Speaker Volume", AC97_MASTER, 8, 0, 31, 1, master_tlv),
117	SOC_SINGLE("Speaker Switch", AC97_MASTER, 15, 1, 1),
118	SOC_DOUBLE_TLV("Headphone Volume", AC97_HEADPHONE, 8, 0, 31, 1,
119		       master_tlv),
120	SOC_SINGLE("Headphone Switch", AC97_HEADPHONE, 15, 1, 1),
121	SOC_SINGLE_TLV("Mono Out Volume", AC97_MASTER_MONO, 0, 31, 1,
122		       master_tlv),
123	SOC_SINGLE("Mono Out Switch", AC97_MASTER_MONO, 15, 1, 1),
124
125	SOC_DOUBLE_TLV("Record Volume", AC97_REC_GAIN, 8, 0, 15, 0, record_tlv),
126	SOC_SINGLE("Record Switch", AC97_REC_GAIN, 15, 1, 1),
127
128
129	SOC_SINGLE_TLV("Beep Volume", AC97_PC_BEEP, 1, 15, 1, beep_tlv),
130	SOC_SINGLE("Beep Switch", AC97_PC_BEEP, 15, 1, 1),
131	SOC_SINGLE("Beep Frequency", AC97_PC_BEEP, 5, 127, 1),
132	SOC_SINGLE_TLV("Phone Volume", AC97_PHONE, 0, 31, 1, mix_tlv),
133	SOC_SINGLE("Phone Switch", AC97_PHONE, 15, 1, 1),
134
135	SOC_ENUM("Mic Boost1", stac9766_boost1_enum),
136	SOC_ENUM("Mic Boost2", stac9766_boost2_enum),
137	SOC_SINGLE_TLV("Mic Volume", AC97_MIC, 0, 31, 1, mix_tlv),
138	SOC_SINGLE("Mic Switch", AC97_MIC, 15, 1, 1),
139	SOC_ENUM("Stereo Mic", stac9766_stereo_mic_enum),
140
141	SOC_DOUBLE_TLV("Line Volume", AC97_LINE, 8, 0, 31, 1, mix_tlv),
142	SOC_SINGLE("Line Switch", AC97_LINE, 15, 1, 1),
143	SOC_DOUBLE_TLV("CD Volume", AC97_CD, 8, 0, 31, 1, mix_tlv),
144	SOC_SINGLE("CD Switch", AC97_CD, 15, 1, 1),
145	SOC_DOUBLE_TLV("AUX Volume", AC97_AUX, 8, 0, 31, 1, mix_tlv),
146	SOC_SINGLE("AUX Switch", AC97_AUX, 15, 1, 1),
147	SOC_DOUBLE_TLV("Video Volume", AC97_VIDEO, 8, 0, 31, 1, mix_tlv),
148	SOC_SINGLE("Video Switch", AC97_VIDEO, 15, 1, 1),
149
150	SOC_DOUBLE_TLV("DAC Volume", AC97_PCM, 8, 0, 31, 1, mix_tlv),
151	SOC_SINGLE("DAC Switch", AC97_PCM, 15, 1, 1),
152	SOC_SINGLE("Loopback Test Switch", AC97_GENERAL_PURPOSE, 7, 1, 0),
153	SOC_SINGLE("3D Volume", AC97_3D_CONTROL, 3, 2, 1),
154	SOC_SINGLE("3D Switch", AC97_GENERAL_PURPOSE, 13, 1, 0),
155
156	SOC_ENUM("SPDIF Mux", stac9766_SPDIF_enum),
157	SOC_ENUM("Mic1/2 Mux", stac9766_mic_enum),
158	SOC_ENUM("Record All Mux", stac9766_record_all_enum),
159	SOC_ENUM("Record Mux", stac9766_record_enum),
160	SOC_ENUM("Mono Mux", stac9766_mono_enum),
161	SOC_ENUM("Pop Bypass Mux", stac9766_popbypass_enum),
162};
163
164static int ac97_analog_prepare(struct snd_pcm_substream *substream,
165			       struct snd_soc_dai *dai)
166{
167	struct snd_soc_component *component = dai->component;
168	struct snd_pcm_runtime *runtime = substream->runtime;
169	unsigned short reg;
170
171	/* enable variable rate audio, disable SPDIF output */
172	snd_soc_component_update_bits(component, AC97_EXTENDED_STATUS, 0x5, 0x1);
173
174	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
175		reg = AC97_PCM_FRONT_DAC_RATE;
176	else
177		reg = AC97_PCM_LR_ADC_RATE;
178
179	return snd_soc_component_write(component, reg, runtime->rate);
180}
181
182static int ac97_digital_prepare(struct snd_pcm_substream *substream,
183				struct snd_soc_dai *dai)
184{
185	struct snd_soc_component *component = dai->component;
186	struct snd_pcm_runtime *runtime = substream->runtime;
187	unsigned short reg;
188
189	snd_soc_component_write(component, AC97_SPDIF, 0x2002);
190
191	/* Enable VRA and SPDIF out */
192	snd_soc_component_update_bits(component, AC97_EXTENDED_STATUS, 0x5, 0x5);
193
194	reg = AC97_PCM_FRONT_DAC_RATE;
195
196	return snd_soc_component_write(component, reg, runtime->rate);
197}
198
199static int stac9766_set_bias_level(struct snd_soc_component *component,
200				   enum snd_soc_bias_level level)
201{
202	switch (level) {
203	case SND_SOC_BIAS_ON: /* full On */
204	case SND_SOC_BIAS_PREPARE: /* partial On */
205	case SND_SOC_BIAS_STANDBY: /* Off, with power */
206		snd_soc_component_write(component, AC97_POWERDOWN, 0x0000);
207		break;
208	case SND_SOC_BIAS_OFF: /* Off, without power */
209		/* disable everything including AC link */
210		snd_soc_component_write(component, AC97_POWERDOWN, 0xffff);
211		break;
212	}
213	return 0;
214}
215
216static int stac9766_component_resume(struct snd_soc_component *component)
217{
218	struct snd_ac97 *ac97 = snd_soc_component_get_drvdata(component);
219
220	return snd_ac97_reset(ac97, true, STAC9766_VENDOR_ID,
221		STAC9766_VENDOR_ID_MASK);
222}
223
224static const struct snd_soc_dai_ops stac9766_dai_ops_analog = {
225	.prepare = ac97_analog_prepare,
226};
227
228static const struct snd_soc_dai_ops stac9766_dai_ops_digital = {
229	.prepare = ac97_digital_prepare,
230};
231
232static struct snd_soc_dai_driver stac9766_dai[] = {
233{
234	.name = "stac9766-hifi-analog",
235
236	/* stream cababilities */
237	.playback = {
238		.stream_name = "stac9766 analog",
239		.channels_min = 1,
240		.channels_max = 2,
241		.rates = SNDRV_PCM_RATE_8000_48000,
242		.formats = SND_SOC_STD_AC97_FMTS,
243	},
244	.capture = {
245		.stream_name = "stac9766 analog",
246		.channels_min = 1,
247		.channels_max = 2,
248		.rates = SNDRV_PCM_RATE_8000_48000,
249		.formats = SND_SOC_STD_AC97_FMTS,
250	},
251	/* alsa ops */
252	.ops = &stac9766_dai_ops_analog,
253},
254{
255	.name = "stac9766-hifi-IEC958",
256
257	/* stream cababilities */
258	.playback = {
259		.stream_name = "stac9766 IEC958",
260		.channels_min = 1,
261		.channels_max = 2,
262		.rates = SNDRV_PCM_RATE_32000 | \
263			SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000,
264		.formats = SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_BE,
265	},
266	/* alsa ops */
267	.ops = &stac9766_dai_ops_digital,
268}
269};
270
271static int stac9766_component_probe(struct snd_soc_component *component)
272{
273	struct snd_ac97 *ac97;
274	struct regmap *regmap;
275	int ret;
276
277	ac97 = snd_soc_new_ac97_component(component, STAC9766_VENDOR_ID,
278			STAC9766_VENDOR_ID_MASK);
279	if (IS_ERR(ac97))
280		return PTR_ERR(ac97);
281
282	regmap = regmap_init_ac97(ac97, &stac9766_regmap_config);
283	if (IS_ERR(regmap)) {
284		ret = PTR_ERR(regmap);
285		goto err_free_ac97;
286	}
287
288	snd_soc_component_init_regmap(component, regmap);
289	snd_soc_component_set_drvdata(component, ac97);
290
291	return 0;
292err_free_ac97:
293	snd_soc_free_ac97_component(ac97);
294	return ret;
295}
296
297static void stac9766_component_remove(struct snd_soc_component *component)
298{
299	struct snd_ac97 *ac97 = snd_soc_component_get_drvdata(component);
300
301	snd_soc_component_exit_regmap(component);
302	snd_soc_free_ac97_component(ac97);
303}
304
305static const struct snd_soc_component_driver soc_component_dev_stac9766 = {
306	.controls		= stac9766_snd_ac97_controls,
307	.num_controls		= ARRAY_SIZE(stac9766_snd_ac97_controls),
308	.set_bias_level		= stac9766_set_bias_level,
309	.probe			= stac9766_component_probe,
310	.remove			= stac9766_component_remove,
311	.resume			= stac9766_component_resume,
312	.suspend_bias_off	= 1,
313	.idle_bias_on		= 1,
314	.use_pmdown_time	= 1,
315	.endianness		= 1,
316};
317
318static int stac9766_probe(struct platform_device *pdev)
319{
320	return devm_snd_soc_register_component(&pdev->dev,
321			&soc_component_dev_stac9766, stac9766_dai, ARRAY_SIZE(stac9766_dai));
322}
323
324static struct platform_driver stac9766_codec_driver = {
325	.driver = {
326			.name = "stac9766-codec",
327	},
328
329	.probe = stac9766_probe,
330};
331
332module_platform_driver(stac9766_codec_driver);
333
334MODULE_DESCRIPTION("ASoC stac9766 driver");
335MODULE_AUTHOR("Jon Smirl <jonsmirl@gmail.com>");
336MODULE_LICENSE("GPL");
337