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22cb839b MB |
1 | /* |
2 | * Speyside with WM8962 audio support | |
3 | * | |
4 | * Copyright 2011 Wolfson Microelectronics | |
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; either version 2 of the License, or (at your | |
9 | * option) any later version. | |
10 | */ | |
11 | ||
12 | #include <sound/soc.h> | |
13 | #include <sound/soc-dapm.h> | |
14 | #include <sound/jack.h> | |
15 | #include <linux/gpio.h> | |
16 | ||
17 | #include "../codecs/wm8962.h" | |
18 | ||
19 | static int speyside_wm8962_set_bias_level(struct snd_soc_card *card, | |
20 | struct snd_soc_dapm_context *dapm, | |
21 | enum snd_soc_bias_level level) | |
22 | { | |
23 | struct snd_soc_dai *codec_dai = card->rtd[0].codec_dai; | |
24 | int ret; | |
25 | ||
26 | switch (level) { | |
27 | case SND_SOC_BIAS_PREPARE: | |
28 | if (dapm->bias_level == SND_SOC_BIAS_STANDBY) { | |
29 | ret = snd_soc_dai_set_pll(codec_dai, WM8962_FLL, | |
30 | WM8962_FLL_MCLK, 32768, | |
31 | 44100 * 256); | |
32 | if (ret < 0) | |
67d0c479 | 33 | pr_err("Failed to start FLL: %d\n", ret); |
22cb839b MB |
34 | |
35 | ret = snd_soc_dai_set_sysclk(codec_dai, | |
36 | WM8962_SYSCLK_FLL, | |
37 | 44100 * 256, | |
38 | SND_SOC_CLOCK_IN); | |
67d0c479 | 39 | if (ret < 0) { |
371e7305 | 40 | pr_err("Failed to set SYSCLK: %d\n", ret); |
22cb839b | 41 | return ret; |
67d0c479 | 42 | } |
22cb839b MB |
43 | } |
44 | break; | |
45 | ||
46 | default: | |
47 | break; | |
48 | } | |
49 | ||
50 | return 0; | |
51 | } | |
52 | ||
53 | static int speyside_wm8962_set_bias_level_post(struct snd_soc_card *card, | |
54 | struct snd_soc_dapm_context *dapm, | |
55 | enum snd_soc_bias_level level) | |
56 | { | |
57 | struct snd_soc_dai *codec_dai = card->rtd[0].codec_dai; | |
58 | int ret; | |
59 | ||
60 | switch (level) { | |
61 | case SND_SOC_BIAS_STANDBY: | |
62 | ret = snd_soc_dai_set_sysclk(codec_dai, WM8962_SYSCLK_MCLK, | |
63 | 32768, SND_SOC_CLOCK_IN); | |
67d0c479 MB |
64 | if (ret < 0) { |
65 | pr_err("Failed to switch away from FLL: %d\n", ret); | |
22cb839b | 66 | return ret; |
67d0c479 | 67 | } |
22cb839b MB |
68 | |
69 | ret = snd_soc_dai_set_pll(codec_dai, WM8962_FLL, | |
70 | 0, 0, 0); | |
71 | if (ret < 0) { | |
67d0c479 | 72 | pr_err("Failed to stop FLL: %d\n", ret); |
22cb839b MB |
73 | return ret; |
74 | } | |
75 | break; | |
76 | ||
77 | default: | |
78 | break; | |
79 | } | |
80 | ||
81 | dapm->bias_level = level; | |
82 | ||
83 | return 0; | |
84 | } | |
85 | ||
86 | static int speyside_wm8962_hw_params(struct snd_pcm_substream *substream, | |
87 | struct snd_pcm_hw_params *params) | |
88 | { | |
89 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
90 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
91 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
92 | int ret; | |
93 | ||
94 | ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S | |
95 | | SND_SOC_DAIFMT_NB_NF | |
96 | | SND_SOC_DAIFMT_CBM_CFM); | |
97 | if (ret < 0) | |
98 | return ret; | |
99 | ||
100 | ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S | |
101 | | SND_SOC_DAIFMT_NB_NF | |
102 | | SND_SOC_DAIFMT_CBM_CFM); | |
103 | if (ret < 0) | |
104 | return ret; | |
105 | ||
106 | return 0; | |
107 | } | |
108 | ||
109 | static struct snd_soc_ops speyside_wm8962_ops = { | |
110 | .hw_params = speyside_wm8962_hw_params, | |
111 | }; | |
112 | ||
113 | static struct snd_soc_dai_link speyside_wm8962_dai[] = { | |
114 | { | |
115 | .name = "CPU", | |
116 | .stream_name = "CPU", | |
117 | .cpu_dai_name = "samsung-i2s.0", | |
118 | .codec_dai_name = "wm8962", | |
119 | .platform_name = "samsung-audio", | |
120 | .codec_name = "wm8962.1-001a", | |
121 | .ops = &speyside_wm8962_ops, | |
122 | }, | |
123 | }; | |
124 | ||
125 | static const struct snd_kcontrol_new controls[] = { | |
126 | SOC_DAPM_PIN_SWITCH("Main Speaker"), | |
127 | }; | |
128 | ||
129 | static struct snd_soc_dapm_widget widgets[] = { | |
130 | SND_SOC_DAPM_HP("Headphone", NULL), | |
131 | SND_SOC_DAPM_MIC("Headset Mic", NULL), | |
132 | ||
133 | SND_SOC_DAPM_MIC("DMIC", NULL), | |
134 | ||
135 | SND_SOC_DAPM_SPK("Main Speaker", NULL), | |
136 | }; | |
137 | ||
138 | static struct snd_soc_dapm_route audio_paths[] = { | |
139 | { "Headphone", NULL, "HPOUTL" }, | |
140 | { "Headphone", NULL, "HPOUTR" }, | |
141 | ||
142 | { "Main Speaker", NULL, "SPKOUTL" }, | |
143 | { "Main Speaker", NULL, "SPKOUTR" }, | |
144 | ||
145 | { "MICBIAS", NULL, "Headset Mic" }, | |
146 | { "IN4L", NULL, "MICBIAS" }, | |
147 | { "IN4R", NULL, "MICBIAS" }, | |
148 | ||
149 | { "MICBIAS", NULL, "DMIC" }, | |
150 | { "DMICDAT", NULL, "MICBIAS" }, | |
151 | }; | |
152 | ||
153 | static struct snd_soc_jack speyside_wm8962_headset; | |
154 | ||
155 | /* Headset jack detection DAPM pins */ | |
156 | static struct snd_soc_jack_pin speyside_wm8962_headset_pins[] = { | |
157 | { | |
158 | .pin = "Headset Mic", | |
159 | .mask = SND_JACK_MICROPHONE, | |
160 | }, | |
161 | { | |
162 | .pin = "Headphone", | |
163 | .mask = SND_JACK_MICROPHONE, | |
164 | }, | |
165 | }; | |
166 | ||
167 | static int speyside_wm8962_late_probe(struct snd_soc_card *card) | |
168 | { | |
169 | struct snd_soc_codec *codec = card->rtd[0].codec; | |
170 | struct snd_soc_dai *codec_dai = card->rtd[0].codec_dai; | |
171 | int ret; | |
172 | ||
173 | ret = snd_soc_dai_set_sysclk(codec_dai, WM8962_SYSCLK_MCLK, | |
174 | 32768, SND_SOC_CLOCK_IN); | |
175 | if (ret < 0) | |
176 | return ret; | |
177 | ||
178 | ret = snd_soc_jack_new(codec, "Headset", | |
179 | SND_JACK_HEADSET | SND_JACK_BTN_0, | |
180 | &speyside_wm8962_headset); | |
181 | if (ret) | |
182 | return ret; | |
183 | ||
184 | ret = snd_soc_jack_add_pins(&speyside_wm8962_headset, | |
185 | ARRAY_SIZE(speyside_wm8962_headset_pins), | |
186 | speyside_wm8962_headset_pins); | |
187 | if (ret) | |
188 | return ret; | |
189 | ||
190 | wm8962_mic_detect(codec, &speyside_wm8962_headset); | |
191 | ||
192 | return 0; | |
193 | } | |
194 | ||
195 | static struct snd_soc_card speyside_wm8962 = { | |
196 | .name = "Speyside WM8962", | |
197 | .dai_link = speyside_wm8962_dai, | |
198 | .num_links = ARRAY_SIZE(speyside_wm8962_dai), | |
199 | ||
200 | .set_bias_level = speyside_wm8962_set_bias_level, | |
201 | .set_bias_level_post = speyside_wm8962_set_bias_level_post, | |
202 | ||
203 | .controls = controls, | |
204 | .num_controls = ARRAY_SIZE(controls), | |
205 | .dapm_widgets = widgets, | |
206 | .num_dapm_widgets = ARRAY_SIZE(widgets), | |
207 | .dapm_routes = audio_paths, | |
208 | .num_dapm_routes = ARRAY_SIZE(audio_paths), | |
209 | ||
210 | .late_probe = speyside_wm8962_late_probe, | |
211 | }; | |
212 | ||
213 | static __devinit int speyside_wm8962_probe(struct platform_device *pdev) | |
214 | { | |
215 | struct snd_soc_card *card = &speyside_wm8962; | |
216 | int ret; | |
217 | ||
218 | card->dev = &pdev->dev; | |
219 | ||
220 | ret = snd_soc_register_card(card); | |
221 | if (ret) { | |
222 | dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n", | |
223 | ret); | |
224 | return ret; | |
225 | } | |
226 | ||
227 | return 0; | |
228 | } | |
229 | ||
230 | static int __devexit speyside_wm8962_remove(struct platform_device *pdev) | |
231 | { | |
232 | struct snd_soc_card *card = platform_get_drvdata(pdev); | |
233 | ||
234 | snd_soc_unregister_card(card); | |
235 | ||
236 | return 0; | |
237 | } | |
238 | ||
239 | static struct platform_driver speyside_wm8962_driver = { | |
240 | .driver = { | |
241 | .name = "speyside-wm8962", | |
242 | .owner = THIS_MODULE, | |
243 | .pm = &snd_soc_pm_ops, | |
244 | }, | |
245 | .probe = speyside_wm8962_probe, | |
246 | .remove = __devexit_p(speyside_wm8962_remove), | |
247 | }; | |
248 | ||
249 | static int __init speyside_wm8962_audio_init(void) | |
250 | { | |
251 | return platform_driver_register(&speyside_wm8962_driver); | |
252 | } | |
253 | module_init(speyside_wm8962_audio_init); | |
254 | ||
255 | static void __exit speyside_wm8962_audio_exit(void) | |
256 | { | |
257 | platform_driver_unregister(&speyside_wm8962_driver); | |
258 | } | |
259 | module_exit(speyside_wm8962_audio_exit); | |
260 | ||
261 | MODULE_DESCRIPTION("Speyside WM8962 audio support"); | |
262 | MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>"); | |
263 | MODULE_LICENSE("GPL"); | |
264 | MODULE_ALIAS("platform:speyside-wm8962"); |