2 * Speyside with WM8962 audio support
4 * Copyright 2011 Wolfson Microelectronics
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.
12 #include <sound/soc.h>
13 #include <sound/soc-dapm.h>
14 #include <sound/jack.h>
15 #include <linux/gpio.h>
17 #include "../codecs/wm8962.h"
19 static int sample_rate = 44100;
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)
25 struct snd_soc_dai *codec_dai = card->rtd[0].codec_dai;
28 if (dapm->dev != codec_dai->dev)
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,
38 pr_err("Failed to start FLL: %d\n", ret);
40 ret = snd_soc_dai_set_sysclk(codec_dai,
45 pr_err("Failed to set SYSCLK: %d\n", ret);
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)
62 struct snd_soc_dai *codec_dai = card->rtd[0].codec_dai;
65 if (dapm->dev != codec_dai->dev)
69 case SND_SOC_BIAS_STANDBY:
70 ret = snd_soc_dai_set_sysclk(codec_dai, WM8962_SYSCLK_MCLK,
71 32768, SND_SOC_CLOCK_IN);
73 pr_err("Failed to switch away from FLL: %d\n", ret);
77 ret = snd_soc_dai_set_pll(codec_dai, WM8962_FLL,
80 pr_err("Failed to stop FLL: %d\n", ret);
89 dapm->bias_level = level;
94 static int speyside_wm8962_hw_params(struct snd_pcm_substream *substream,
95 struct snd_pcm_hw_params *params)
97 sample_rate = params_rate(params);
102 static struct snd_soc_ops speyside_wm8962_ops = {
103 .hw_params = speyside_wm8962_hw_params,
106 static struct snd_soc_dai_link speyside_wm8962_dai[] = {
109 .stream_name = "CPU",
110 .cpu_dai_name = "samsung-i2s.0",
111 .codec_dai_name = "wm8962",
112 .platform_name = "samsung-audio",
113 .codec_name = "wm8962.1-001a",
114 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
115 | SND_SOC_DAIFMT_CBM_CFM,
116 .ops = &speyside_wm8962_ops,
120 static const struct snd_kcontrol_new controls[] = {
121 SOC_DAPM_PIN_SWITCH("Main Speaker"),
122 SOC_DAPM_PIN_SWITCH("DMIC"),
125 static struct snd_soc_dapm_widget widgets[] = {
126 SND_SOC_DAPM_HP("Headphone", NULL),
127 SND_SOC_DAPM_MIC("Headset Mic", NULL),
129 SND_SOC_DAPM_MIC("DMIC", NULL),
130 SND_SOC_DAPM_MIC("AMIC", NULL),
132 SND_SOC_DAPM_SPK("Main Speaker", NULL),
135 static struct snd_soc_dapm_route audio_paths[] = {
136 { "Headphone", NULL, "HPOUTL" },
137 { "Headphone", NULL, "HPOUTR" },
139 { "Main Speaker", NULL, "SPKOUTL" },
140 { "Main Speaker", NULL, "SPKOUTR" },
142 { "Headset Mic", NULL, "MICBIAS" },
143 { "IN4L", NULL, "Headset Mic" },
144 { "IN4R", NULL, "Headset Mic" },
146 { "AMIC", NULL, "MICBIAS" },
147 { "IN1L", NULL, "AMIC" },
148 { "IN1R", NULL, "AMIC" },
150 { "DMIC", NULL, "MICBIAS" },
151 { "DMICDAT", NULL, "DMIC" },
154 static struct snd_soc_jack speyside_wm8962_headset;
156 /* Headset jack detection DAPM pins */
157 static struct snd_soc_jack_pin speyside_wm8962_headset_pins[] = {
159 .pin = "Headset Mic",
160 .mask = SND_JACK_MICROPHONE,
164 .mask = SND_JACK_MICROPHONE,
168 static int speyside_wm8962_late_probe(struct snd_soc_card *card)
170 struct snd_soc_codec *codec = card->rtd[0].codec;
171 struct snd_soc_dai *codec_dai = card->rtd[0].codec_dai;
174 ret = snd_soc_dai_set_sysclk(codec_dai, WM8962_SYSCLK_MCLK,
175 32768, SND_SOC_CLOCK_IN);
179 ret = snd_soc_jack_new(codec, "Headset",
180 SND_JACK_HEADSET | SND_JACK_BTN_0,
181 &speyside_wm8962_headset);
185 ret = snd_soc_jack_add_pins(&speyside_wm8962_headset,
186 ARRAY_SIZE(speyside_wm8962_headset_pins),
187 speyside_wm8962_headset_pins);
191 wm8962_mic_detect(codec, &speyside_wm8962_headset);
196 static struct snd_soc_card speyside_wm8962 = {
197 .name = "Speyside WM8962",
198 .dai_link = speyside_wm8962_dai,
199 .num_links = ARRAY_SIZE(speyside_wm8962_dai),
201 .set_bias_level = speyside_wm8962_set_bias_level,
202 .set_bias_level_post = speyside_wm8962_set_bias_level_post,
204 .controls = controls,
205 .num_controls = ARRAY_SIZE(controls),
206 .dapm_widgets = widgets,
207 .num_dapm_widgets = ARRAY_SIZE(widgets),
208 .dapm_routes = audio_paths,
209 .num_dapm_routes = ARRAY_SIZE(audio_paths),
211 .late_probe = speyside_wm8962_late_probe,
214 static __devinit int speyside_wm8962_probe(struct platform_device *pdev)
216 struct snd_soc_card *card = &speyside_wm8962;
219 card->dev = &pdev->dev;
221 ret = snd_soc_register_card(card);
223 dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
231 static int __devexit speyside_wm8962_remove(struct platform_device *pdev)
233 struct snd_soc_card *card = platform_get_drvdata(pdev);
235 snd_soc_unregister_card(card);
240 static struct platform_driver speyside_wm8962_driver = {
242 .name = "speyside-wm8962",
243 .owner = THIS_MODULE,
244 .pm = &snd_soc_pm_ops,
246 .probe = speyside_wm8962_probe,
247 .remove = __devexit_p(speyside_wm8962_remove),
250 static int __init speyside_wm8962_audio_init(void)
252 return platform_driver_register(&speyside_wm8962_driver);
254 module_init(speyside_wm8962_audio_init);
256 static void __exit speyside_wm8962_audio_exit(void)
258 platform_driver_unregister(&speyside_wm8962_driver);
260 module_exit(speyside_wm8962_audio_exit);
262 MODULE_DESCRIPTION("Speyside WM8962 audio support");
263 MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
264 MODULE_LICENSE("GPL");
265 MODULE_ALIAS("platform:speyside-wm8962");