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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
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");
1/*
2 * stac9766.c -- ALSA SoC STAC9766 codec support
3 *
4 * Copyright 2009 Jon Smirl, Digispeaker
5 * Author: Jon Smirl <jonsmirl@gmail.com>
6 *
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License as published by the
9 * Free Software Foundation; either version 2 of the License, or (at your
10 * option) any later version.
11 *
12 * Features:-
13 *
14 * o Support for AC97 Codec, S/PDIF
15 */
16
17#include <linux/init.h>
18#include <linux/slab.h>
19#include <linux/module.h>
20#include <linux/device.h>
21#include <sound/core.h>
22#include <sound/pcm.h>
23#include <sound/ac97_codec.h>
24#include <sound/initval.h>
25#include <sound/pcm_params.h>
26#include <sound/soc.h>
27#include <sound/tlv.h>
28
29#include "stac9766.h"
30
31/*
32 * STAC9766 register cache
33 */
34static const u16 stac9766_reg[] = {
35 0x6A90, 0x8000, 0x8000, 0x8000, /* 6 */
36 0x0000, 0x0000, 0x8008, 0x8008, /* e */
37 0x8808, 0x8808, 0x8808, 0x8808, /* 16 */
38 0x8808, 0x0000, 0x8000, 0x0000, /* 1e */
39 0x0000, 0x0000, 0x0000, 0x000f, /* 26 */
40 0x0a05, 0x0400, 0xbb80, 0x0000, /* 2e */
41 0x0000, 0xbb80, 0x0000, 0x0000, /* 36 */
42 0x0000, 0x2000, 0x0000, 0x0100, /* 3e */
43 0x0000, 0x0000, 0x0080, 0x0000, /* 46 */
44 0x0000, 0x0000, 0x0003, 0xffff, /* 4e */
45 0x0000, 0x0000, 0x0000, 0x0000, /* 56 */
46 0x4000, 0x0000, 0x0000, 0x0000, /* 5e */
47 0x1201, 0xFFFF, 0xFFFF, 0x0000, /* 66 */
48 0x0000, 0x0000, 0x0000, 0x0000, /* 6e */
49 0x0000, 0x0000, 0x0000, 0x0006, /* 76 */
50 0x0000, 0x0000, 0x0000, 0x0000, /* 7e */
51};
52
53static const char *stac9766_record_mux[] = {"Mic", "CD", "Video", "AUX",
54 "Line", "Stereo Mix", "Mono Mix", "Phone"};
55static const char *stac9766_mono_mux[] = {"Mix", "Mic"};
56static const char *stac9766_mic_mux[] = {"Mic1", "Mic2"};
57static const char *stac9766_SPDIF_mux[] = {"PCM", "ADC Record"};
58static const char *stac9766_popbypass_mux[] = {"Normal", "Bypass Mixer"};
59static const char *stac9766_record_all_mux[] = {"All analog",
60 "Analog plus DAC"};
61static const char *stac9766_boost1[] = {"0dB", "10dB"};
62static const char *stac9766_boost2[] = {"0dB", "20dB"};
63static const char *stac9766_stereo_mic[] = {"Off", "On"};
64
65static SOC_ENUM_DOUBLE_DECL(stac9766_record_enum,
66 AC97_REC_SEL, 8, 0, stac9766_record_mux);
67static SOC_ENUM_SINGLE_DECL(stac9766_mono_enum,
68 AC97_GENERAL_PURPOSE, 9, stac9766_mono_mux);
69static SOC_ENUM_SINGLE_DECL(stac9766_mic_enum,
70 AC97_GENERAL_PURPOSE, 8, stac9766_mic_mux);
71static SOC_ENUM_SINGLE_DECL(stac9766_SPDIF_enum,
72 AC97_STAC_DA_CONTROL, 1, stac9766_SPDIF_mux);
73static SOC_ENUM_SINGLE_DECL(stac9766_popbypass_enum,
74 AC97_GENERAL_PURPOSE, 15, stac9766_popbypass_mux);
75static SOC_ENUM_SINGLE_DECL(stac9766_record_all_enum,
76 AC97_STAC_ANALOG_SPECIAL, 12,
77 stac9766_record_all_mux);
78static SOC_ENUM_SINGLE_DECL(stac9766_boost1_enum,
79 AC97_MIC, 6, stac9766_boost1); /* 0/10dB */
80static SOC_ENUM_SINGLE_DECL(stac9766_boost2_enum,
81 AC97_STAC_ANALOG_SPECIAL, 2, stac9766_boost2); /* 0/20dB */
82static SOC_ENUM_SINGLE_DECL(stac9766_stereo_mic_enum,
83 AC97_STAC_STEREO_MIC, 2, stac9766_stereo_mic);
84
85static const DECLARE_TLV_DB_LINEAR(master_tlv, -4600, 0);
86static const DECLARE_TLV_DB_LINEAR(record_tlv, 0, 2250);
87static const DECLARE_TLV_DB_LINEAR(beep_tlv, -4500, 0);
88static const DECLARE_TLV_DB_LINEAR(mix_tlv, -3450, 1200);
89
90static const struct snd_kcontrol_new stac9766_snd_ac97_controls[] = {
91 SOC_DOUBLE_TLV("Speaker Volume", AC97_MASTER, 8, 0, 31, 1, master_tlv),
92 SOC_SINGLE("Speaker Switch", AC97_MASTER, 15, 1, 1),
93 SOC_DOUBLE_TLV("Headphone Volume", AC97_HEADPHONE, 8, 0, 31, 1,
94 master_tlv),
95 SOC_SINGLE("Headphone Switch", AC97_HEADPHONE, 15, 1, 1),
96 SOC_SINGLE_TLV("Mono Out Volume", AC97_MASTER_MONO, 0, 31, 1,
97 master_tlv),
98 SOC_SINGLE("Mono Out Switch", AC97_MASTER_MONO, 15, 1, 1),
99
100 SOC_DOUBLE_TLV("Record Volume", AC97_REC_GAIN, 8, 0, 15, 0, record_tlv),
101 SOC_SINGLE("Record Switch", AC97_REC_GAIN, 15, 1, 1),
102
103
104 SOC_SINGLE_TLV("Beep Volume", AC97_PC_BEEP, 1, 15, 1, beep_tlv),
105 SOC_SINGLE("Beep Switch", AC97_PC_BEEP, 15, 1, 1),
106 SOC_SINGLE("Beep Frequency", AC97_PC_BEEP, 5, 127, 1),
107 SOC_SINGLE_TLV("Phone Volume", AC97_PHONE, 0, 31, 1, mix_tlv),
108 SOC_SINGLE("Phone Switch", AC97_PHONE, 15, 1, 1),
109
110 SOC_ENUM("Mic Boost1", stac9766_boost1_enum),
111 SOC_ENUM("Mic Boost2", stac9766_boost2_enum),
112 SOC_SINGLE_TLV("Mic Volume", AC97_MIC, 0, 31, 1, mix_tlv),
113 SOC_SINGLE("Mic Switch", AC97_MIC, 15, 1, 1),
114 SOC_ENUM("Stereo Mic", stac9766_stereo_mic_enum),
115
116 SOC_DOUBLE_TLV("Line Volume", AC97_LINE, 8, 0, 31, 1, mix_tlv),
117 SOC_SINGLE("Line Switch", AC97_LINE, 15, 1, 1),
118 SOC_DOUBLE_TLV("CD Volume", AC97_CD, 8, 0, 31, 1, mix_tlv),
119 SOC_SINGLE("CD Switch", AC97_CD, 15, 1, 1),
120 SOC_DOUBLE_TLV("AUX Volume", AC97_AUX, 8, 0, 31, 1, mix_tlv),
121 SOC_SINGLE("AUX Switch", AC97_AUX, 15, 1, 1),
122 SOC_DOUBLE_TLV("Video Volume", AC97_VIDEO, 8, 0, 31, 1, mix_tlv),
123 SOC_SINGLE("Video Switch", AC97_VIDEO, 15, 1, 1),
124
125 SOC_DOUBLE_TLV("DAC Volume", AC97_PCM, 8, 0, 31, 1, mix_tlv),
126 SOC_SINGLE("DAC Switch", AC97_PCM, 15, 1, 1),
127 SOC_SINGLE("Loopback Test Switch", AC97_GENERAL_PURPOSE, 7, 1, 0),
128 SOC_SINGLE("3D Volume", AC97_3D_CONTROL, 3, 2, 1),
129 SOC_SINGLE("3D Switch", AC97_GENERAL_PURPOSE, 13, 1, 0),
130
131 SOC_ENUM("SPDIF Mux", stac9766_SPDIF_enum),
132 SOC_ENUM("Mic1/2 Mux", stac9766_mic_enum),
133 SOC_ENUM("Record All Mux", stac9766_record_all_enum),
134 SOC_ENUM("Record Mux", stac9766_record_enum),
135 SOC_ENUM("Mono Mux", stac9766_mono_enum),
136 SOC_ENUM("Pop Bypass Mux", stac9766_popbypass_enum),
137};
138
139static int stac9766_ac97_write(struct snd_soc_codec *codec, unsigned int reg,
140 unsigned int val)
141{
142 u16 *cache = codec->reg_cache;
143
144 if (reg > AC97_STAC_PAGE0) {
145 stac9766_ac97_write(codec, AC97_INT_PAGING, 0);
146 soc_ac97_ops->write(codec->ac97, reg, val);
147 stac9766_ac97_write(codec, AC97_INT_PAGING, 1);
148 return 0;
149 }
150 if (reg / 2 >= ARRAY_SIZE(stac9766_reg))
151 return -EIO;
152
153 soc_ac97_ops->write(codec->ac97, reg, val);
154 cache[reg / 2] = val;
155 return 0;
156}
157
158static unsigned int stac9766_ac97_read(struct snd_soc_codec *codec,
159 unsigned int reg)
160{
161 u16 val = 0, *cache = codec->reg_cache;
162
163 if (reg > AC97_STAC_PAGE0) {
164 stac9766_ac97_write(codec, AC97_INT_PAGING, 0);
165 val = soc_ac97_ops->read(codec->ac97, reg - AC97_STAC_PAGE0);
166 stac9766_ac97_write(codec, AC97_INT_PAGING, 1);
167 return val;
168 }
169 if (reg / 2 >= ARRAY_SIZE(stac9766_reg))
170 return -EIO;
171
172 if (reg == AC97_RESET || reg == AC97_GPIO_STATUS ||
173 reg == AC97_INT_PAGING || reg == AC97_VENDOR_ID1 ||
174 reg == AC97_VENDOR_ID2) {
175
176 val = soc_ac97_ops->read(codec->ac97, reg);
177 return val;
178 }
179 return cache[reg / 2];
180}
181
182static int ac97_analog_prepare(struct snd_pcm_substream *substream,
183 struct snd_soc_dai *dai)
184{
185 struct snd_soc_codec *codec = dai->codec;
186 struct snd_pcm_runtime *runtime = substream->runtime;
187 unsigned short reg, vra;
188
189 vra = stac9766_ac97_read(codec, AC97_EXTENDED_STATUS);
190
191 vra |= 0x1; /* enable variable rate audio */
192 vra &= ~0x4; /* disable SPDIF output */
193
194 stac9766_ac97_write(codec, AC97_EXTENDED_STATUS, vra);
195
196 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
197 reg = AC97_PCM_FRONT_DAC_RATE;
198 else
199 reg = AC97_PCM_LR_ADC_RATE;
200
201 return stac9766_ac97_write(codec, reg, runtime->rate);
202}
203
204static int ac97_digital_prepare(struct snd_pcm_substream *substream,
205 struct snd_soc_dai *dai)
206{
207 struct snd_soc_codec *codec = dai->codec;
208 struct snd_pcm_runtime *runtime = substream->runtime;
209 unsigned short reg, vra;
210
211 stac9766_ac97_write(codec, AC97_SPDIF, 0x2002);
212
213 vra = stac9766_ac97_read(codec, AC97_EXTENDED_STATUS);
214 vra |= 0x5; /* Enable VRA and SPDIF out */
215
216 stac9766_ac97_write(codec, AC97_EXTENDED_STATUS, vra);
217
218 reg = AC97_PCM_FRONT_DAC_RATE;
219
220 return stac9766_ac97_write(codec, reg, runtime->rate);
221}
222
223static int stac9766_set_bias_level(struct snd_soc_codec *codec,
224 enum snd_soc_bias_level level)
225{
226 switch (level) {
227 case SND_SOC_BIAS_ON: /* full On */
228 case SND_SOC_BIAS_PREPARE: /* partial On */
229 case SND_SOC_BIAS_STANDBY: /* Off, with power */
230 stac9766_ac97_write(codec, AC97_POWERDOWN, 0x0000);
231 break;
232 case SND_SOC_BIAS_OFF: /* Off, without power */
233 /* disable everything including AC link */
234 stac9766_ac97_write(codec, AC97_POWERDOWN, 0xffff);
235 break;
236 }
237 codec->dapm.bias_level = level;
238 return 0;
239}
240
241static int stac9766_reset(struct snd_soc_codec *codec, int try_warm)
242{
243 if (try_warm && soc_ac97_ops->warm_reset) {
244 soc_ac97_ops->warm_reset(codec->ac97);
245 if (stac9766_ac97_read(codec, 0) == stac9766_reg[0])
246 return 1;
247 }
248
249 soc_ac97_ops->reset(codec->ac97);
250 if (soc_ac97_ops->warm_reset)
251 soc_ac97_ops->warm_reset(codec->ac97);
252 if (stac9766_ac97_read(codec, 0) != stac9766_reg[0])
253 return -EIO;
254 return 0;
255}
256
257static int stac9766_codec_suspend(struct snd_soc_codec *codec)
258{
259 stac9766_set_bias_level(codec, SND_SOC_BIAS_OFF);
260 return 0;
261}
262
263static int stac9766_codec_resume(struct snd_soc_codec *codec)
264{
265 u16 id, reset;
266
267 reset = 0;
268 /* give the codec an AC97 warm reset to start the link */
269reset:
270 if (reset > 5) {
271 printk(KERN_ERR "stac9766 failed to resume");
272 return -EIO;
273 }
274 codec->ac97->bus->ops->warm_reset(codec->ac97);
275 id = soc_ac97_ops->read(codec->ac97, AC97_VENDOR_ID2);
276 if (id != 0x4c13) {
277 stac9766_reset(codec, 0);
278 reset++;
279 goto reset;
280 }
281 stac9766_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
282
283 return 0;
284}
285
286static const struct snd_soc_dai_ops stac9766_dai_ops_analog = {
287 .prepare = ac97_analog_prepare,
288};
289
290static const struct snd_soc_dai_ops stac9766_dai_ops_digital = {
291 .prepare = ac97_digital_prepare,
292};
293
294static struct snd_soc_dai_driver stac9766_dai[] = {
295{
296 .name = "stac9766-hifi-analog",
297 .ac97_control = 1,
298
299 /* stream cababilities */
300 .playback = {
301 .stream_name = "stac9766 analog",
302 .channels_min = 1,
303 .channels_max = 2,
304 .rates = SNDRV_PCM_RATE_8000_48000,
305 .formats = SND_SOC_STD_AC97_FMTS,
306 },
307 .capture = {
308 .stream_name = "stac9766 analog",
309 .channels_min = 1,
310 .channels_max = 2,
311 .rates = SNDRV_PCM_RATE_8000_48000,
312 .formats = SND_SOC_STD_AC97_FMTS,
313 },
314 /* alsa ops */
315 .ops = &stac9766_dai_ops_analog,
316},
317{
318 .name = "stac9766-hifi-IEC958",
319 .ac97_control = 1,
320
321 /* stream cababilities */
322 .playback = {
323 .stream_name = "stac9766 IEC958",
324 .channels_min = 1,
325 .channels_max = 2,
326 .rates = SNDRV_PCM_RATE_32000 | \
327 SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000,
328 .formats = SNDRV_PCM_FORMAT_IEC958_SUBFRAME_BE,
329 },
330 /* alsa ops */
331 .ops = &stac9766_dai_ops_digital,
332}
333};
334
335static int stac9766_codec_probe(struct snd_soc_codec *codec)
336{
337 int ret = 0;
338
339 ret = snd_soc_new_ac97_codec(codec, soc_ac97_ops, 0);
340 if (ret < 0)
341 goto codec_err;
342
343 /* do a cold reset for the controller and then try
344 * a warm reset followed by an optional cold reset for codec */
345 stac9766_reset(codec, 0);
346 ret = stac9766_reset(codec, 1);
347 if (ret < 0) {
348 printk(KERN_ERR "Failed to reset STAC9766: AC97 link error\n");
349 goto codec_err;
350 }
351
352 stac9766_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
353
354 snd_soc_add_codec_controls(codec, stac9766_snd_ac97_controls,
355 ARRAY_SIZE(stac9766_snd_ac97_controls));
356
357 return 0;
358
359codec_err:
360 snd_soc_free_ac97_codec(codec);
361 return ret;
362}
363
364static int stac9766_codec_remove(struct snd_soc_codec *codec)
365{
366 snd_soc_free_ac97_codec(codec);
367 return 0;
368}
369
370static struct snd_soc_codec_driver soc_codec_dev_stac9766 = {
371 .write = stac9766_ac97_write,
372 .read = stac9766_ac97_read,
373 .set_bias_level = stac9766_set_bias_level,
374 .probe = stac9766_codec_probe,
375 .remove = stac9766_codec_remove,
376 .suspend = stac9766_codec_suspend,
377 .resume = stac9766_codec_resume,
378 .reg_cache_size = ARRAY_SIZE(stac9766_reg),
379 .reg_word_size = sizeof(u16),
380 .reg_cache_step = 2,
381 .reg_cache_default = stac9766_reg,
382};
383
384static int stac9766_probe(struct platform_device *pdev)
385{
386 return snd_soc_register_codec(&pdev->dev,
387 &soc_codec_dev_stac9766, stac9766_dai, ARRAY_SIZE(stac9766_dai));
388}
389
390static int stac9766_remove(struct platform_device *pdev)
391{
392 snd_soc_unregister_codec(&pdev->dev);
393 return 0;
394}
395
396static struct platform_driver stac9766_codec_driver = {
397 .driver = {
398 .name = "stac9766-codec",
399 .owner = THIS_MODULE,
400 },
401
402 .probe = stac9766_probe,
403 .remove = stac9766_remove,
404};
405
406module_platform_driver(stac9766_codec_driver);
407
408MODULE_DESCRIPTION("ASoC stac9766 driver");
409MODULE_AUTHOR("Jon Smirl <jonsmirl@gmail.com>");
410MODULE_LICENSE("GPL");