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Linux/sound/soc/codecs/stac9766.c

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  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 
 33 static 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 
 65 static 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_RBTREE,
 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 
 78 static const char *stac9766_record_mux[] = {"Mic", "CD", "Video", "AUX",
 79                         "Line", "Stereo Mix", "Mono Mix", "Phone"};
 80 static const char *stac9766_mono_mux[] = {"Mix", "Mic"};
 81 static const char *stac9766_mic_mux[] = {"Mic1", "Mic2"};
 82 static const char *stac9766_SPDIF_mux[] = {"PCM", "ADC Record"};
 83 static const char *stac9766_popbypass_mux[] = {"Normal", "Bypass Mixer"};
 84 static const char *stac9766_record_all_mux[] = {"All analog",
 85         "Analog plus DAC"};
 86 static const char *stac9766_boost1[] = {"0dB", "10dB"};
 87 static const char *stac9766_boost2[] = {"0dB", "20dB"};
 88 static const char *stac9766_stereo_mic[] = {"Off", "On"};
 89 
 90 static SOC_ENUM_DOUBLE_DECL(stac9766_record_enum,
 91                             AC97_REC_SEL, 8, 0, stac9766_record_mux);
 92 static SOC_ENUM_SINGLE_DECL(stac9766_mono_enum,
 93                             AC97_GENERAL_PURPOSE, 9, stac9766_mono_mux);
 94 static SOC_ENUM_SINGLE_DECL(stac9766_mic_enum,
 95                             AC97_GENERAL_PURPOSE, 8, stac9766_mic_mux);
 96 static SOC_ENUM_SINGLE_DECL(stac9766_SPDIF_enum,
 97                             AC97_STAC_DA_CONTROL, 1, stac9766_SPDIF_mux);
 98 static SOC_ENUM_SINGLE_DECL(stac9766_popbypass_enum,
 99                             AC97_GENERAL_PURPOSE, 15, stac9766_popbypass_mux);
100 static SOC_ENUM_SINGLE_DECL(stac9766_record_all_enum,
101                             AC97_STAC_ANALOG_SPECIAL, 12,
102                             stac9766_record_all_mux);
103 static SOC_ENUM_SINGLE_DECL(stac9766_boost1_enum,
104                             AC97_MIC, 6, stac9766_boost1); /* 0/10dB */
105 static SOC_ENUM_SINGLE_DECL(stac9766_boost2_enum,
106                             AC97_STAC_ANALOG_SPECIAL, 2, stac9766_boost2); /* 0/20dB */
107 static SOC_ENUM_SINGLE_DECL(stac9766_stereo_mic_enum,
108                             AC97_STAC_STEREO_MIC, 2, stac9766_stereo_mic);
109 
110 static const SNDRV_CTL_TLVD_DECLARE_DB_SCALE(master_tlv, -4650, 150, 0);
111 static const SNDRV_CTL_TLVD_DECLARE_DB_SCALE(record_tlv,     0, 150, 0);
112 static const SNDRV_CTL_TLVD_DECLARE_DB_SCALE(beep_tlv,   -4500, 300, 0);
113 static const SNDRV_CTL_TLVD_DECLARE_DB_SCALE(mix_tlv,    -3450, 150, 0);
114 
115 static 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 
164 static 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 
182 static 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 
199 static 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 
216 static 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 
224 static const struct snd_soc_dai_ops stac9766_dai_ops_analog = {
225         .prepare = ac97_analog_prepare,
226 };
227 
228 static const struct snd_soc_dai_ops stac9766_dai_ops_digital = {
229         .prepare = ac97_digital_prepare,
230 };
231 
232 static 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 
271 static 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;
292 err_free_ac97:
293         snd_soc_free_ac97_component(ac97);
294         return ret;
295 }
296 
297 static 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 
305 static 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         .non_legacy_dai_naming  = 1,
317 
318 };
319 
320 static int stac9766_probe(struct platform_device *pdev)
321 {
322         return devm_snd_soc_register_component(&pdev->dev,
323                         &soc_component_dev_stac9766, stac9766_dai, ARRAY_SIZE(stac9766_dai));
324 }
325 
326 static struct platform_driver stac9766_codec_driver = {
327         .driver = {
328                         .name = "stac9766-codec",
329         },
330 
331         .probe = stac9766_probe,
332 };
333 
334 module_platform_driver(stac9766_codec_driver);
335 
336 MODULE_DESCRIPTION("ASoC stac9766 driver");
337 MODULE_AUTHOR("Jon Smirl <jonsmirl@gmail.com>");
338 MODULE_LICENSE("GPL");
339 

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