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 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;
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);
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);
114 sample_rate = params_rate(params);
119 static struct snd_soc_ops speyside_wm8962_ops = {
120 .hw_params = speyside_wm8962_hw_params,
123 static struct snd_soc_dai_link speyside_wm8962_dai[] = {
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,
135 static const struct snd_kcontrol_new controls[] = {
136 SOC_DAPM_PIN_SWITCH("Main Speaker"),
139 static struct snd_soc_dapm_widget widgets[] = {
140 SND_SOC_DAPM_HP("Headphone", NULL),
141 SND_SOC_DAPM_MIC("Headset Mic", NULL),
143 SND_SOC_DAPM_MIC("DMIC", NULL),
145 SND_SOC_DAPM_SPK("Main Speaker", NULL),
148 static struct snd_soc_dapm_route audio_paths[] = {
149 { "Headphone", NULL, "HPOUTL" },
150 { "Headphone", NULL, "HPOUTR" },
152 { "Main Speaker", NULL, "SPKOUTL" },
153 { "Main Speaker", NULL, "SPKOUTR" },
155 { "Headset Mic", NULL, "MICBIAS" },
156 { "IN4L", NULL, "Headset Mic" },
157 { "IN4R", NULL, "Headset Mic" },
159 { "DMIC", NULL, "MICBIAS" },
160 { "DMICDAT", NULL, "DMIC" },
163 static struct snd_soc_jack speyside_wm8962_headset;
165 /* Headset jack detection DAPM pins */
166 static struct snd_soc_jack_pin speyside_wm8962_headset_pins[] = {
168 .pin = "Headset Mic",
169 .mask = SND_JACK_MICROPHONE,
173 .mask = SND_JACK_MICROPHONE,
177 static int speyside_wm8962_late_probe(struct snd_soc_card *card)
179 struct snd_soc_codec *codec = card->rtd[0].codec;
180 struct snd_soc_dai *codec_dai = card->rtd[0].codec_dai;
183 ret = snd_soc_dai_set_sysclk(codec_dai, WM8962_SYSCLK_MCLK,
184 32768, SND_SOC_CLOCK_IN);
188 ret = snd_soc_jack_new(codec, "Headset",
189 SND_JACK_HEADSET | SND_JACK_BTN_0,
190 &speyside_wm8962_headset);
194 ret = snd_soc_jack_add_pins(&speyside_wm8962_headset,
195 ARRAY_SIZE(speyside_wm8962_headset_pins),
196 speyside_wm8962_headset_pins);
200 wm8962_mic_detect(codec, &speyside_wm8962_headset);
205 static struct snd_soc_card speyside_wm8962 = {
206 .name = "Speyside WM8962",
207 .dai_link = speyside_wm8962_dai,
208 .num_links = ARRAY_SIZE(speyside_wm8962_dai),
210 .set_bias_level = speyside_wm8962_set_bias_level,
211 .set_bias_level_post = speyside_wm8962_set_bias_level_post,
213 .controls = controls,
214 .num_controls = ARRAY_SIZE(controls),
215 .dapm_widgets = widgets,
216 .num_dapm_widgets = ARRAY_SIZE(widgets),
217 .dapm_routes = audio_paths,
218 .num_dapm_routes = ARRAY_SIZE(audio_paths),
220 .late_probe = speyside_wm8962_late_probe,
223 static __devinit int speyside_wm8962_probe(struct platform_device *pdev)
225 struct snd_soc_card *card = &speyside_wm8962;
228 card->dev = &pdev->dev;
230 ret = snd_soc_register_card(card);
232 dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
240 static int __devexit speyside_wm8962_remove(struct platform_device *pdev)
242 struct snd_soc_card *card = platform_get_drvdata(pdev);
244 snd_soc_unregister_card(card);
249 static struct platform_driver speyside_wm8962_driver = {
251 .name = "speyside-wm8962",
252 .owner = THIS_MODULE,
253 .pm = &snd_soc_pm_ops,
255 .probe = speyside_wm8962_probe,
256 .remove = __devexit_p(speyside_wm8962_remove),
259 static int __init speyside_wm8962_audio_init(void)
261 return platform_driver_register(&speyside_wm8962_driver);
263 module_init(speyside_wm8962_audio_init);
265 static void __exit speyside_wm8962_audio_exit(void)
267 platform_driver_unregister(&speyside_wm8962_driver);
269 module_exit(speyside_wm8962_audio_exit);
271 MODULE_DESCRIPTION("Speyside WM8962 audio support");
272 MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
273 MODULE_LICENSE("GPL");
274 MODULE_ALIAS("platform:speyside-wm8962");