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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 | ||
f79e7ff8 MB |
26 | if (dapm->dev != codec_dai->dev) |
27 | return 0; | |
28 | ||
22cb839b MB |
29 | switch (level) { |
30 | case SND_SOC_BIAS_PREPARE: | |
31 | if (dapm->bias_level == SND_SOC_BIAS_STANDBY) { | |
32 | ret = snd_soc_dai_set_pll(codec_dai, WM8962_FLL, | |
33 | WM8962_FLL_MCLK, 32768, | |
34 | 44100 * 256); | |
35 | if (ret < 0) | |
67d0c479 | 36 | pr_err("Failed to start FLL: %d\n", ret); |
22cb839b MB |
37 | |
38 | ret = snd_soc_dai_set_sysclk(codec_dai, | |
39 | WM8962_SYSCLK_FLL, | |
40 | 44100 * 256, | |
41 | SND_SOC_CLOCK_IN); | |
67d0c479 | 42 | if (ret < 0) { |
371e7305 | 43 | pr_err("Failed to set SYSCLK: %d\n", ret); |
22cb839b | 44 | return ret; |
67d0c479 | 45 | } |
22cb839b MB |
46 | } |
47 | break; | |
48 | ||
49 | default: | |
50 | break; | |
51 | } | |
52 | ||
53 | return 0; | |
54 | } | |
55 | ||
56 | static int speyside_wm8962_set_bias_level_post(struct snd_soc_card *card, | |
57 | struct snd_soc_dapm_context *dapm, | |
58 | enum snd_soc_bias_level level) | |
59 | { | |
60 | struct snd_soc_dai *codec_dai = card->rtd[0].codec_dai; | |
61 | int ret; | |
62 | ||
f79e7ff8 MB |
63 | if (dapm->dev != codec_dai->dev) |
64 | return 0; | |
65 | ||
22cb839b MB |
66 | switch (level) { |
67 | case SND_SOC_BIAS_STANDBY: | |
68 | ret = snd_soc_dai_set_sysclk(codec_dai, WM8962_SYSCLK_MCLK, | |
69 | 32768, SND_SOC_CLOCK_IN); | |
67d0c479 MB |
70 | if (ret < 0) { |
71 | pr_err("Failed to switch away from FLL: %d\n", ret); | |
22cb839b | 72 | return ret; |
67d0c479 | 73 | } |
22cb839b MB |
74 | |
75 | ret = snd_soc_dai_set_pll(codec_dai, WM8962_FLL, | |
76 | 0, 0, 0); | |
77 | if (ret < 0) { | |
67d0c479 | 78 | pr_err("Failed to stop FLL: %d\n", ret); |
22cb839b MB |
79 | return ret; |
80 | } | |
81 | break; | |
82 | ||
83 | default: | |
84 | break; | |
85 | } | |
86 | ||
87 | dapm->bias_level = level; | |
88 | ||
89 | return 0; | |
90 | } | |
91 | ||
92 | static int speyside_wm8962_hw_params(struct snd_pcm_substream *substream, | |
93 | struct snd_pcm_hw_params *params) | |
94 | { | |
95 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
96 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
97 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
98 | int ret; | |
99 | ||
100 | ret = snd_soc_dai_set_fmt(codec_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 | ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S | |
107 | | SND_SOC_DAIFMT_NB_NF | |
108 | | SND_SOC_DAIFMT_CBM_CFM); | |
109 | if (ret < 0) | |
110 | return ret; | |
111 | ||
112 | return 0; | |
113 | } | |
114 | ||
115 | static struct snd_soc_ops speyside_wm8962_ops = { | |
116 | .hw_params = speyside_wm8962_hw_params, | |
117 | }; | |
118 | ||
119 | static struct snd_soc_dai_link speyside_wm8962_dai[] = { | |
120 | { | |
121 | .name = "CPU", | |
122 | .stream_name = "CPU", | |
123 | .cpu_dai_name = "samsung-i2s.0", | |
124 | .codec_dai_name = "wm8962", | |
125 | .platform_name = "samsung-audio", | |
126 | .codec_name = "wm8962.1-001a", | |
127 | .ops = &speyside_wm8962_ops, | |
128 | }, | |
129 | }; | |
130 | ||
131 | static const struct snd_kcontrol_new controls[] = { | |
132 | SOC_DAPM_PIN_SWITCH("Main Speaker"), | |
133 | }; | |
134 | ||
135 | static struct snd_soc_dapm_widget widgets[] = { | |
136 | SND_SOC_DAPM_HP("Headphone", NULL), | |
137 | SND_SOC_DAPM_MIC("Headset Mic", NULL), | |
138 | ||
139 | SND_SOC_DAPM_MIC("DMIC", NULL), | |
140 | ||
141 | SND_SOC_DAPM_SPK("Main Speaker", NULL), | |
142 | }; | |
143 | ||
144 | static struct snd_soc_dapm_route audio_paths[] = { | |
145 | { "Headphone", NULL, "HPOUTL" }, | |
146 | { "Headphone", NULL, "HPOUTR" }, | |
147 | ||
148 | { "Main Speaker", NULL, "SPKOUTL" }, | |
149 | { "Main Speaker", NULL, "SPKOUTR" }, | |
150 | ||
151 | { "MICBIAS", NULL, "Headset Mic" }, | |
152 | { "IN4L", NULL, "MICBIAS" }, | |
153 | { "IN4R", NULL, "MICBIAS" }, | |
154 | ||
155 | { "MICBIAS", NULL, "DMIC" }, | |
156 | { "DMICDAT", NULL, "MICBIAS" }, | |
157 | }; | |
158 | ||
159 | static struct snd_soc_jack speyside_wm8962_headset; | |
160 | ||
161 | /* Headset jack detection DAPM pins */ | |
162 | static struct snd_soc_jack_pin speyside_wm8962_headset_pins[] = { | |
163 | { | |
164 | .pin = "Headset Mic", | |
165 | .mask = SND_JACK_MICROPHONE, | |
166 | }, | |
167 | { | |
168 | .pin = "Headphone", | |
169 | .mask = SND_JACK_MICROPHONE, | |
170 | }, | |
171 | }; | |
172 | ||
173 | static int speyside_wm8962_late_probe(struct snd_soc_card *card) | |
174 | { | |
175 | struct snd_soc_codec *codec = card->rtd[0].codec; | |
176 | struct snd_soc_dai *codec_dai = card->rtd[0].codec_dai; | |
177 | int ret; | |
178 | ||
179 | ret = snd_soc_dai_set_sysclk(codec_dai, WM8962_SYSCLK_MCLK, | |
180 | 32768, SND_SOC_CLOCK_IN); | |
181 | if (ret < 0) | |
182 | return ret; | |
183 | ||
184 | ret = snd_soc_jack_new(codec, "Headset", | |
185 | SND_JACK_HEADSET | SND_JACK_BTN_0, | |
186 | &speyside_wm8962_headset); | |
187 | if (ret) | |
188 | return ret; | |
189 | ||
190 | ret = snd_soc_jack_add_pins(&speyside_wm8962_headset, | |
191 | ARRAY_SIZE(speyside_wm8962_headset_pins), | |
192 | speyside_wm8962_headset_pins); | |
193 | if (ret) | |
194 | return ret; | |
195 | ||
196 | wm8962_mic_detect(codec, &speyside_wm8962_headset); | |
197 | ||
198 | return 0; | |
199 | } | |
200 | ||
201 | static struct snd_soc_card speyside_wm8962 = { | |
202 | .name = "Speyside WM8962", | |
203 | .dai_link = speyside_wm8962_dai, | |
204 | .num_links = ARRAY_SIZE(speyside_wm8962_dai), | |
205 | ||
206 | .set_bias_level = speyside_wm8962_set_bias_level, | |
207 | .set_bias_level_post = speyside_wm8962_set_bias_level_post, | |
208 | ||
209 | .controls = controls, | |
210 | .num_controls = ARRAY_SIZE(controls), | |
211 | .dapm_widgets = widgets, | |
212 | .num_dapm_widgets = ARRAY_SIZE(widgets), | |
213 | .dapm_routes = audio_paths, | |
214 | .num_dapm_routes = ARRAY_SIZE(audio_paths), | |
215 | ||
216 | .late_probe = speyside_wm8962_late_probe, | |
217 | }; | |
218 | ||
219 | static __devinit int speyside_wm8962_probe(struct platform_device *pdev) | |
220 | { | |
221 | struct snd_soc_card *card = &speyside_wm8962; | |
222 | int ret; | |
223 | ||
224 | card->dev = &pdev->dev; | |
225 | ||
226 | ret = snd_soc_register_card(card); | |
227 | if (ret) { | |
228 | dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n", | |
229 | ret); | |
230 | return ret; | |
231 | } | |
232 | ||
233 | return 0; | |
234 | } | |
235 | ||
236 | static int __devexit speyside_wm8962_remove(struct platform_device *pdev) | |
237 | { | |
238 | struct snd_soc_card *card = platform_get_drvdata(pdev); | |
239 | ||
240 | snd_soc_unregister_card(card); | |
241 | ||
242 | return 0; | |
243 | } | |
244 | ||
245 | static struct platform_driver speyside_wm8962_driver = { | |
246 | .driver = { | |
247 | .name = "speyside-wm8962", | |
248 | .owner = THIS_MODULE, | |
249 | .pm = &snd_soc_pm_ops, | |
250 | }, | |
251 | .probe = speyside_wm8962_probe, | |
252 | .remove = __devexit_p(speyside_wm8962_remove), | |
253 | }; | |
254 | ||
255 | static int __init speyside_wm8962_audio_init(void) | |
256 | { | |
257 | return platform_driver_register(&speyside_wm8962_driver); | |
258 | } | |
259 | module_init(speyside_wm8962_audio_init); | |
260 | ||
261 | static void __exit speyside_wm8962_audio_exit(void) | |
262 | { | |
263 | platform_driver_unregister(&speyside_wm8962_driver); | |
264 | } | |
265 | module_exit(speyside_wm8962_audio_exit); | |
266 | ||
267 | MODULE_DESCRIPTION("Speyside WM8962 audio support"); | |
268 | MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>"); | |
269 | MODULE_LICENSE("GPL"); | |
270 | MODULE_ALIAS("platform:speyside-wm8962"); |