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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 | ||
ef473fee MB |
19 | static int sample_rate = 44100; |
20 | ||
22cb839b MB |
21 | static int speyside_wm8962_set_bias_level(struct snd_soc_card *card, |
22 | struct snd_soc_dapm_context *dapm, | |
23 | enum snd_soc_bias_level level) | |
24 | { | |
25 | struct snd_soc_dai *codec_dai = card->rtd[0].codec_dai; | |
26 | int ret; | |
27 | ||
f79e7ff8 MB |
28 | if (dapm->dev != codec_dai->dev) |
29 | return 0; | |
30 | ||
22cb839b MB |
31 | switch (level) { |
32 | case SND_SOC_BIAS_PREPARE: | |
33 | if (dapm->bias_level == SND_SOC_BIAS_STANDBY) { | |
34 | ret = snd_soc_dai_set_pll(codec_dai, WM8962_FLL, | |
35 | WM8962_FLL_MCLK, 32768, | |
ef473fee | 36 | sample_rate * 512); |
22cb839b | 37 | if (ret < 0) |
67d0c479 | 38 | pr_err("Failed to start FLL: %d\n", ret); |
22cb839b MB |
39 | |
40 | ret = snd_soc_dai_set_sysclk(codec_dai, | |
41 | WM8962_SYSCLK_FLL, | |
ef473fee | 42 | sample_rate * 512, |
22cb839b | 43 | SND_SOC_CLOCK_IN); |
67d0c479 | 44 | if (ret < 0) { |
371e7305 | 45 | pr_err("Failed to set SYSCLK: %d\n", ret); |
22cb839b | 46 | return ret; |
67d0c479 | 47 | } |
22cb839b MB |
48 | } |
49 | break; | |
50 | ||
51 | default: | |
52 | break; | |
53 | } | |
54 | ||
55 | return 0; | |
56 | } | |
57 | ||
58 | static int speyside_wm8962_set_bias_level_post(struct snd_soc_card *card, | |
59 | struct snd_soc_dapm_context *dapm, | |
60 | enum snd_soc_bias_level level) | |
61 | { | |
62 | struct snd_soc_dai *codec_dai = card->rtd[0].codec_dai; | |
63 | int ret; | |
64 | ||
f79e7ff8 MB |
65 | if (dapm->dev != codec_dai->dev) |
66 | return 0; | |
67 | ||
22cb839b MB |
68 | switch (level) { |
69 | case SND_SOC_BIAS_STANDBY: | |
70 | ret = snd_soc_dai_set_sysclk(codec_dai, WM8962_SYSCLK_MCLK, | |
71 | 32768, SND_SOC_CLOCK_IN); | |
67d0c479 MB |
72 | if (ret < 0) { |
73 | pr_err("Failed to switch away from FLL: %d\n", ret); | |
22cb839b | 74 | return ret; |
67d0c479 | 75 | } |
22cb839b MB |
76 | |
77 | ret = snd_soc_dai_set_pll(codec_dai, WM8962_FLL, | |
78 | 0, 0, 0); | |
79 | if (ret < 0) { | |
67d0c479 | 80 | pr_err("Failed to stop FLL: %d\n", ret); |
22cb839b MB |
81 | return ret; |
82 | } | |
83 | break; | |
84 | ||
85 | default: | |
86 | break; | |
87 | } | |
88 | ||
89 | dapm->bias_level = level; | |
90 | ||
91 | return 0; | |
92 | } | |
93 | ||
94 | static int speyside_wm8962_hw_params(struct snd_pcm_substream *substream, | |
95 | struct snd_pcm_hw_params *params) | |
96 | { | |
97 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
98 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
99 | struct snd_soc_dai *codec_dai = rtd->codec_dai; | |
100 | int ret; | |
101 | ||
102 | ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S | |
103 | | SND_SOC_DAIFMT_NB_NF | |
104 | | SND_SOC_DAIFMT_CBM_CFM); | |
105 | if (ret < 0) | |
106 | return ret; | |
107 | ||
108 | ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S | |
109 | | SND_SOC_DAIFMT_NB_NF | |
110 | | SND_SOC_DAIFMT_CBM_CFM); | |
111 | if (ret < 0) | |
112 | return ret; | |
113 | ||
ef473fee MB |
114 | sample_rate = params_rate(params); |
115 | ||
22cb839b MB |
116 | return 0; |
117 | } | |
118 | ||
119 | static struct snd_soc_ops speyside_wm8962_ops = { | |
120 | .hw_params = speyside_wm8962_hw_params, | |
121 | }; | |
122 | ||
123 | static struct snd_soc_dai_link speyside_wm8962_dai[] = { | |
124 | { | |
125 | .name = "CPU", | |
126 | .stream_name = "CPU", | |
127 | .cpu_dai_name = "samsung-i2s.0", | |
128 | .codec_dai_name = "wm8962", | |
129 | .platform_name = "samsung-audio", | |
130 | .codec_name = "wm8962.1-001a", | |
131 | .ops = &speyside_wm8962_ops, | |
132 | }, | |
133 | }; | |
134 | ||
135 | static const struct snd_kcontrol_new controls[] = { | |
136 | SOC_DAPM_PIN_SWITCH("Main Speaker"), | |
137 | }; | |
138 | ||
139 | static struct snd_soc_dapm_widget widgets[] = { | |
140 | SND_SOC_DAPM_HP("Headphone", NULL), | |
141 | SND_SOC_DAPM_MIC("Headset Mic", NULL), | |
142 | ||
143 | SND_SOC_DAPM_MIC("DMIC", NULL), | |
7564463c | 144 | SND_SOC_DAPM_MIC("AMIC", NULL), |
22cb839b MB |
145 | |
146 | SND_SOC_DAPM_SPK("Main Speaker", NULL), | |
147 | }; | |
148 | ||
149 | static struct snd_soc_dapm_route audio_paths[] = { | |
150 | { "Headphone", NULL, "HPOUTL" }, | |
151 | { "Headphone", NULL, "HPOUTR" }, | |
152 | ||
153 | { "Main Speaker", NULL, "SPKOUTL" }, | |
154 | { "Main Speaker", NULL, "SPKOUTR" }, | |
155 | ||
086d7f80 MB |
156 | { "Headset Mic", NULL, "MICBIAS" }, |
157 | { "IN4L", NULL, "Headset Mic" }, | |
158 | { "IN4R", NULL, "Headset Mic" }, | |
22cb839b | 159 | |
7564463c MB |
160 | { "AMIC", NULL, "MICBIAS" }, |
161 | { "IN1L", NULL, "AMIC" }, | |
162 | { "IN1R", NULL, "AMIC" }, | |
163 | ||
086d7f80 MB |
164 | { "DMIC", NULL, "MICBIAS" }, |
165 | { "DMICDAT", NULL, "DMIC" }, | |
22cb839b MB |
166 | }; |
167 | ||
168 | static struct snd_soc_jack speyside_wm8962_headset; | |
169 | ||
170 | /* Headset jack detection DAPM pins */ | |
171 | static struct snd_soc_jack_pin speyside_wm8962_headset_pins[] = { | |
172 | { | |
173 | .pin = "Headset Mic", | |
174 | .mask = SND_JACK_MICROPHONE, | |
175 | }, | |
176 | { | |
177 | .pin = "Headphone", | |
178 | .mask = SND_JACK_MICROPHONE, | |
179 | }, | |
180 | }; | |
181 | ||
182 | static int speyside_wm8962_late_probe(struct snd_soc_card *card) | |
183 | { | |
184 | struct snd_soc_codec *codec = card->rtd[0].codec; | |
185 | struct snd_soc_dai *codec_dai = card->rtd[0].codec_dai; | |
186 | int ret; | |
187 | ||
188 | ret = snd_soc_dai_set_sysclk(codec_dai, WM8962_SYSCLK_MCLK, | |
189 | 32768, SND_SOC_CLOCK_IN); | |
190 | if (ret < 0) | |
191 | return ret; | |
192 | ||
193 | ret = snd_soc_jack_new(codec, "Headset", | |
194 | SND_JACK_HEADSET | SND_JACK_BTN_0, | |
195 | &speyside_wm8962_headset); | |
196 | if (ret) | |
197 | return ret; | |
198 | ||
199 | ret = snd_soc_jack_add_pins(&speyside_wm8962_headset, | |
200 | ARRAY_SIZE(speyside_wm8962_headset_pins), | |
201 | speyside_wm8962_headset_pins); | |
202 | if (ret) | |
203 | return ret; | |
204 | ||
205 | wm8962_mic_detect(codec, &speyside_wm8962_headset); | |
206 | ||
207 | return 0; | |
208 | } | |
209 | ||
210 | static struct snd_soc_card speyside_wm8962 = { | |
211 | .name = "Speyside WM8962", | |
212 | .dai_link = speyside_wm8962_dai, | |
213 | .num_links = ARRAY_SIZE(speyside_wm8962_dai), | |
214 | ||
215 | .set_bias_level = speyside_wm8962_set_bias_level, | |
216 | .set_bias_level_post = speyside_wm8962_set_bias_level_post, | |
217 | ||
218 | .controls = controls, | |
219 | .num_controls = ARRAY_SIZE(controls), | |
220 | .dapm_widgets = widgets, | |
221 | .num_dapm_widgets = ARRAY_SIZE(widgets), | |
222 | .dapm_routes = audio_paths, | |
223 | .num_dapm_routes = ARRAY_SIZE(audio_paths), | |
224 | ||
225 | .late_probe = speyside_wm8962_late_probe, | |
226 | }; | |
227 | ||
228 | static __devinit int speyside_wm8962_probe(struct platform_device *pdev) | |
229 | { | |
230 | struct snd_soc_card *card = &speyside_wm8962; | |
231 | int ret; | |
232 | ||
233 | card->dev = &pdev->dev; | |
234 | ||
235 | ret = snd_soc_register_card(card); | |
236 | if (ret) { | |
237 | dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n", | |
238 | ret); | |
239 | return ret; | |
240 | } | |
241 | ||
242 | return 0; | |
243 | } | |
244 | ||
245 | static int __devexit speyside_wm8962_remove(struct platform_device *pdev) | |
246 | { | |
247 | struct snd_soc_card *card = platform_get_drvdata(pdev); | |
248 | ||
249 | snd_soc_unregister_card(card); | |
250 | ||
251 | return 0; | |
252 | } | |
253 | ||
254 | static struct platform_driver speyside_wm8962_driver = { | |
255 | .driver = { | |
256 | .name = "speyside-wm8962", | |
257 | .owner = THIS_MODULE, | |
258 | .pm = &snd_soc_pm_ops, | |
259 | }, | |
260 | .probe = speyside_wm8962_probe, | |
261 | .remove = __devexit_p(speyside_wm8962_remove), | |
262 | }; | |
263 | ||
264 | static int __init speyside_wm8962_audio_init(void) | |
265 | { | |
266 | return platform_driver_register(&speyside_wm8962_driver); | |
267 | } | |
268 | module_init(speyside_wm8962_audio_init); | |
269 | ||
270 | static void __exit speyside_wm8962_audio_exit(void) | |
271 | { | |
272 | platform_driver_unregister(&speyside_wm8962_driver); | |
273 | } | |
274 | module_exit(speyside_wm8962_audio_exit); | |
275 | ||
276 | MODULE_DESCRIPTION("Speyside WM8962 audio support"); | |
277 | MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>"); | |
278 | MODULE_LICENSE("GPL"); | |
279 | MODULE_ALIAS("platform:speyside-wm8962"); |