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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> | |
da155d5b | 16 | #include <linux/module.h> |
22cb839b MB |
17 | |
18 | #include "../codecs/wm8962.h" | |
19 | ||
ef473fee MB |
20 | static int sample_rate = 44100; |
21 | ||
22cb839b MB |
22 | static int speyside_wm8962_set_bias_level(struct snd_soc_card *card, |
23 | struct snd_soc_dapm_context *dapm, | |
24 | enum snd_soc_bias_level level) | |
25 | { | |
26 | struct snd_soc_dai *codec_dai = card->rtd[0].codec_dai; | |
27 | int ret; | |
28 | ||
f79e7ff8 MB |
29 | if (dapm->dev != codec_dai->dev) |
30 | return 0; | |
31 | ||
22cb839b MB |
32 | switch (level) { |
33 | case SND_SOC_BIAS_PREPARE: | |
34 | if (dapm->bias_level == SND_SOC_BIAS_STANDBY) { | |
35 | ret = snd_soc_dai_set_pll(codec_dai, WM8962_FLL, | |
36 | WM8962_FLL_MCLK, 32768, | |
ef473fee | 37 | sample_rate * 512); |
22cb839b | 38 | if (ret < 0) |
67d0c479 | 39 | pr_err("Failed to start FLL: %d\n", ret); |
22cb839b MB |
40 | |
41 | ret = snd_soc_dai_set_sysclk(codec_dai, | |
42 | WM8962_SYSCLK_FLL, | |
ef473fee | 43 | sample_rate * 512, |
22cb839b | 44 | SND_SOC_CLOCK_IN); |
67d0c479 | 45 | if (ret < 0) { |
371e7305 | 46 | pr_err("Failed to set SYSCLK: %d\n", ret); |
22cb839b | 47 | return ret; |
67d0c479 | 48 | } |
22cb839b MB |
49 | } |
50 | break; | |
51 | ||
52 | default: | |
53 | break; | |
54 | } | |
55 | ||
56 | return 0; | |
57 | } | |
58 | ||
59 | static int speyside_wm8962_set_bias_level_post(struct snd_soc_card *card, | |
60 | struct snd_soc_dapm_context *dapm, | |
61 | enum snd_soc_bias_level level) | |
62 | { | |
63 | struct snd_soc_dai *codec_dai = card->rtd[0].codec_dai; | |
64 | int ret; | |
65 | ||
f79e7ff8 MB |
66 | if (dapm->dev != codec_dai->dev) |
67 | return 0; | |
68 | ||
22cb839b MB |
69 | switch (level) { |
70 | case SND_SOC_BIAS_STANDBY: | |
71 | ret = snd_soc_dai_set_sysclk(codec_dai, WM8962_SYSCLK_MCLK, | |
72 | 32768, SND_SOC_CLOCK_IN); | |
67d0c479 MB |
73 | if (ret < 0) { |
74 | pr_err("Failed to switch away from FLL: %d\n", ret); | |
22cb839b | 75 | return ret; |
67d0c479 | 76 | } |
22cb839b MB |
77 | |
78 | ret = snd_soc_dai_set_pll(codec_dai, WM8962_FLL, | |
79 | 0, 0, 0); | |
80 | if (ret < 0) { | |
67d0c479 | 81 | pr_err("Failed to stop FLL: %d\n", ret); |
22cb839b MB |
82 | return ret; |
83 | } | |
84 | break; | |
85 | ||
86 | default: | |
87 | break; | |
88 | } | |
89 | ||
90 | dapm->bias_level = level; | |
91 | ||
92 | return 0; | |
93 | } | |
94 | ||
95 | static int speyside_wm8962_hw_params(struct snd_pcm_substream *substream, | |
96 | struct snd_pcm_hw_params *params) | |
97 | { | |
ef473fee MB |
98 | sample_rate = params_rate(params); |
99 | ||
22cb839b MB |
100 | return 0; |
101 | } | |
102 | ||
103 | static struct snd_soc_ops speyside_wm8962_ops = { | |
104 | .hw_params = speyside_wm8962_hw_params, | |
105 | }; | |
106 | ||
107 | static struct snd_soc_dai_link speyside_wm8962_dai[] = { | |
108 | { | |
109 | .name = "CPU", | |
110 | .stream_name = "CPU", | |
111 | .cpu_dai_name = "samsung-i2s.0", | |
112 | .codec_dai_name = "wm8962", | |
113 | .platform_name = "samsung-audio", | |
114 | .codec_name = "wm8962.1-001a", | |
44fdd433 MB |
115 | .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
116 | | SND_SOC_DAIFMT_CBM_CFM, | |
22cb839b MB |
117 | .ops = &speyside_wm8962_ops, |
118 | }, | |
119 | }; | |
120 | ||
121 | static const struct snd_kcontrol_new controls[] = { | |
122 | SOC_DAPM_PIN_SWITCH("Main Speaker"), | |
8c756158 | 123 | SOC_DAPM_PIN_SWITCH("DMIC"), |
22cb839b MB |
124 | }; |
125 | ||
126 | static struct snd_soc_dapm_widget widgets[] = { | |
127 | SND_SOC_DAPM_HP("Headphone", NULL), | |
128 | SND_SOC_DAPM_MIC("Headset Mic", NULL), | |
129 | ||
130 | SND_SOC_DAPM_MIC("DMIC", NULL), | |
7564463c | 131 | SND_SOC_DAPM_MIC("AMIC", NULL), |
22cb839b MB |
132 | |
133 | SND_SOC_DAPM_SPK("Main Speaker", NULL), | |
134 | }; | |
135 | ||
136 | static struct snd_soc_dapm_route audio_paths[] = { | |
137 | { "Headphone", NULL, "HPOUTL" }, | |
138 | { "Headphone", NULL, "HPOUTR" }, | |
139 | ||
140 | { "Main Speaker", NULL, "SPKOUTL" }, | |
141 | { "Main Speaker", NULL, "SPKOUTR" }, | |
142 | ||
086d7f80 MB |
143 | { "Headset Mic", NULL, "MICBIAS" }, |
144 | { "IN4L", NULL, "Headset Mic" }, | |
145 | { "IN4R", NULL, "Headset Mic" }, | |
22cb839b | 146 | |
7564463c MB |
147 | { "AMIC", NULL, "MICBIAS" }, |
148 | { "IN1L", NULL, "AMIC" }, | |
149 | { "IN1R", NULL, "AMIC" }, | |
150 | ||
086d7f80 MB |
151 | { "DMIC", NULL, "MICBIAS" }, |
152 | { "DMICDAT", NULL, "DMIC" }, | |
22cb839b MB |
153 | }; |
154 | ||
155 | static struct snd_soc_jack speyside_wm8962_headset; | |
156 | ||
157 | /* Headset jack detection DAPM pins */ | |
158 | static struct snd_soc_jack_pin speyside_wm8962_headset_pins[] = { | |
159 | { | |
160 | .pin = "Headset Mic", | |
161 | .mask = SND_JACK_MICROPHONE, | |
162 | }, | |
163 | { | |
164 | .pin = "Headphone", | |
165 | .mask = SND_JACK_MICROPHONE, | |
166 | }, | |
167 | }; | |
168 | ||
169 | static int speyside_wm8962_late_probe(struct snd_soc_card *card) | |
170 | { | |
171 | struct snd_soc_codec *codec = card->rtd[0].codec; | |
172 | struct snd_soc_dai *codec_dai = card->rtd[0].codec_dai; | |
173 | int ret; | |
174 | ||
175 | ret = snd_soc_dai_set_sysclk(codec_dai, WM8962_SYSCLK_MCLK, | |
176 | 32768, SND_SOC_CLOCK_IN); | |
177 | if (ret < 0) | |
178 | return ret; | |
179 | ||
180 | ret = snd_soc_jack_new(codec, "Headset", | |
181 | SND_JACK_HEADSET | SND_JACK_BTN_0, | |
182 | &speyside_wm8962_headset); | |
183 | if (ret) | |
184 | return ret; | |
185 | ||
186 | ret = snd_soc_jack_add_pins(&speyside_wm8962_headset, | |
187 | ARRAY_SIZE(speyside_wm8962_headset_pins), | |
188 | speyside_wm8962_headset_pins); | |
189 | if (ret) | |
190 | return ret; | |
191 | ||
192 | wm8962_mic_detect(codec, &speyside_wm8962_headset); | |
193 | ||
194 | return 0; | |
195 | } | |
196 | ||
197 | static struct snd_soc_card speyside_wm8962 = { | |
198 | .name = "Speyside WM8962", | |
199 | .dai_link = speyside_wm8962_dai, | |
200 | .num_links = ARRAY_SIZE(speyside_wm8962_dai), | |
201 | ||
202 | .set_bias_level = speyside_wm8962_set_bias_level, | |
203 | .set_bias_level_post = speyside_wm8962_set_bias_level_post, | |
204 | ||
205 | .controls = controls, | |
206 | .num_controls = ARRAY_SIZE(controls), | |
207 | .dapm_widgets = widgets, | |
208 | .num_dapm_widgets = ARRAY_SIZE(widgets), | |
209 | .dapm_routes = audio_paths, | |
210 | .num_dapm_routes = ARRAY_SIZE(audio_paths), | |
211 | ||
212 | .late_probe = speyside_wm8962_late_probe, | |
213 | }; | |
214 | ||
215 | static __devinit int speyside_wm8962_probe(struct platform_device *pdev) | |
216 | { | |
217 | struct snd_soc_card *card = &speyside_wm8962; | |
218 | int ret; | |
219 | ||
220 | card->dev = &pdev->dev; | |
221 | ||
222 | ret = snd_soc_register_card(card); | |
223 | if (ret) { | |
224 | dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n", | |
225 | ret); | |
226 | return ret; | |
227 | } | |
228 | ||
229 | return 0; | |
230 | } | |
231 | ||
232 | static int __devexit speyside_wm8962_remove(struct platform_device *pdev) | |
233 | { | |
234 | struct snd_soc_card *card = platform_get_drvdata(pdev); | |
235 | ||
236 | snd_soc_unregister_card(card); | |
237 | ||
238 | return 0; | |
239 | } | |
240 | ||
241 | static struct platform_driver speyside_wm8962_driver = { | |
242 | .driver = { | |
243 | .name = "speyside-wm8962", | |
244 | .owner = THIS_MODULE, | |
245 | .pm = &snd_soc_pm_ops, | |
246 | }, | |
247 | .probe = speyside_wm8962_probe, | |
248 | .remove = __devexit_p(speyside_wm8962_remove), | |
249 | }; | |
250 | ||
251 | static int __init speyside_wm8962_audio_init(void) | |
252 | { | |
253 | return platform_driver_register(&speyside_wm8962_driver); | |
254 | } | |
255 | module_init(speyside_wm8962_audio_init); | |
256 | ||
257 | static void __exit speyside_wm8962_audio_exit(void) | |
258 | { | |
259 | platform_driver_unregister(&speyside_wm8962_driver); | |
260 | } | |
261 | module_exit(speyside_wm8962_audio_exit); | |
262 | ||
263 | MODULE_DESCRIPTION("Speyside WM8962 audio support"); | |
264 | MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>"); | |
265 | MODULE_LICENSE("GPL"); | |
266 | MODULE_ALIAS("platform:speyside-wm8962"); |