271 lines
6.2 KiB
C
271 lines
6.2 KiB
C
/*
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* Speyside with WM8962 audio support
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*
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* Copyright 2011 Wolfson Microelectronics
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*/
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#include <sound/soc.h>
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#include <sound/soc-dapm.h>
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#include <sound/jack.h>
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#include <linux/gpio.h>
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#include "../codecs/wm8962.h"
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static int speyside_wm8962_set_bias_level(struct snd_soc_card *card,
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struct snd_soc_dapm_context *dapm,
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enum snd_soc_bias_level level)
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{
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struct snd_soc_dai *codec_dai = card->rtd[0].codec_dai;
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int ret;
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if (dapm->dev != codec_dai->dev)
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return 0;
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switch (level) {
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case SND_SOC_BIAS_PREPARE:
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if (dapm->bias_level == SND_SOC_BIAS_STANDBY) {
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ret = snd_soc_dai_set_pll(codec_dai, WM8962_FLL,
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WM8962_FLL_MCLK, 32768,
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44100 * 256);
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if (ret < 0)
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pr_err("Failed to start FLL: %d\n", ret);
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ret = snd_soc_dai_set_sysclk(codec_dai,
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WM8962_SYSCLK_FLL,
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44100 * 256,
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SND_SOC_CLOCK_IN);
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if (ret < 0) {
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pr_err("Failed to set SYSCLK: %d\n", ret);
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return ret;
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}
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}
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break;
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default:
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break;
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}
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return 0;
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}
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static int speyside_wm8962_set_bias_level_post(struct snd_soc_card *card,
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struct snd_soc_dapm_context *dapm,
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enum snd_soc_bias_level level)
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{
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struct snd_soc_dai *codec_dai = card->rtd[0].codec_dai;
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int ret;
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if (dapm->dev != codec_dai->dev)
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return 0;
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switch (level) {
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case SND_SOC_BIAS_STANDBY:
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ret = snd_soc_dai_set_sysclk(codec_dai, WM8962_SYSCLK_MCLK,
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32768, SND_SOC_CLOCK_IN);
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if (ret < 0) {
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pr_err("Failed to switch away from FLL: %d\n", ret);
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return ret;
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}
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ret = snd_soc_dai_set_pll(codec_dai, WM8962_FLL,
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0, 0, 0);
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if (ret < 0) {
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pr_err("Failed to stop FLL: %d\n", ret);
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return ret;
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}
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break;
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default:
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break;
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}
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dapm->bias_level = level;
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return 0;
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}
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static int speyside_wm8962_hw_params(struct snd_pcm_substream *substream,
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struct snd_pcm_hw_params *params)
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{
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struct snd_soc_pcm_runtime *rtd = substream->private_data;
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struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
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struct snd_soc_dai *codec_dai = rtd->codec_dai;
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int ret;
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ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S
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| SND_SOC_DAIFMT_NB_NF
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| SND_SOC_DAIFMT_CBM_CFM);
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if (ret < 0)
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return ret;
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ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S
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| SND_SOC_DAIFMT_NB_NF
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| SND_SOC_DAIFMT_CBM_CFM);
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if (ret < 0)
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return ret;
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return 0;
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}
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static struct snd_soc_ops speyside_wm8962_ops = {
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.hw_params = speyside_wm8962_hw_params,
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};
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static struct snd_soc_dai_link speyside_wm8962_dai[] = {
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{
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.name = "CPU",
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.stream_name = "CPU",
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.cpu_dai_name = "samsung-i2s.0",
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.codec_dai_name = "wm8962",
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.platform_name = "samsung-audio",
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.codec_name = "wm8962.1-001a",
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.ops = &speyside_wm8962_ops,
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},
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};
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static const struct snd_kcontrol_new controls[] = {
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SOC_DAPM_PIN_SWITCH("Main Speaker"),
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};
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static struct snd_soc_dapm_widget widgets[] = {
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SND_SOC_DAPM_HP("Headphone", NULL),
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SND_SOC_DAPM_MIC("Headset Mic", NULL),
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SND_SOC_DAPM_MIC("DMIC", NULL),
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SND_SOC_DAPM_SPK("Main Speaker", NULL),
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};
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static struct snd_soc_dapm_route audio_paths[] = {
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{ "Headphone", NULL, "HPOUTL" },
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{ "Headphone", NULL, "HPOUTR" },
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{ "Main Speaker", NULL, "SPKOUTL" },
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{ "Main Speaker", NULL, "SPKOUTR" },
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{ "MICBIAS", NULL, "Headset Mic" },
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{ "IN4L", NULL, "MICBIAS" },
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{ "IN4R", NULL, "MICBIAS" },
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{ "MICBIAS", NULL, "DMIC" },
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{ "DMICDAT", NULL, "MICBIAS" },
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};
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static struct snd_soc_jack speyside_wm8962_headset;
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/* Headset jack detection DAPM pins */
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static struct snd_soc_jack_pin speyside_wm8962_headset_pins[] = {
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{
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.pin = "Headset Mic",
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.mask = SND_JACK_MICROPHONE,
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},
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{
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.pin = "Headphone",
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.mask = SND_JACK_MICROPHONE,
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},
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};
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static int speyside_wm8962_late_probe(struct snd_soc_card *card)
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{
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struct snd_soc_codec *codec = card->rtd[0].codec;
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struct snd_soc_dai *codec_dai = card->rtd[0].codec_dai;
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int ret;
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ret = snd_soc_dai_set_sysclk(codec_dai, WM8962_SYSCLK_MCLK,
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32768, SND_SOC_CLOCK_IN);
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if (ret < 0)
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return ret;
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ret = snd_soc_jack_new(codec, "Headset",
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SND_JACK_HEADSET | SND_JACK_BTN_0,
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&speyside_wm8962_headset);
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if (ret)
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return ret;
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ret = snd_soc_jack_add_pins(&speyside_wm8962_headset,
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ARRAY_SIZE(speyside_wm8962_headset_pins),
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speyside_wm8962_headset_pins);
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if (ret)
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return ret;
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wm8962_mic_detect(codec, &speyside_wm8962_headset);
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return 0;
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}
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static struct snd_soc_card speyside_wm8962 = {
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.name = "Speyside WM8962",
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.dai_link = speyside_wm8962_dai,
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.num_links = ARRAY_SIZE(speyside_wm8962_dai),
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.set_bias_level = speyside_wm8962_set_bias_level,
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.set_bias_level_post = speyside_wm8962_set_bias_level_post,
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.controls = controls,
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.num_controls = ARRAY_SIZE(controls),
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.dapm_widgets = widgets,
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.num_dapm_widgets = ARRAY_SIZE(widgets),
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.dapm_routes = audio_paths,
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.num_dapm_routes = ARRAY_SIZE(audio_paths),
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.late_probe = speyside_wm8962_late_probe,
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};
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static __devinit int speyside_wm8962_probe(struct platform_device *pdev)
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{
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struct snd_soc_card *card = &speyside_wm8962;
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int ret;
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card->dev = &pdev->dev;
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ret = snd_soc_register_card(card);
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if (ret) {
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dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
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ret);
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return ret;
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}
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return 0;
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}
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static int __devexit speyside_wm8962_remove(struct platform_device *pdev)
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{
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struct snd_soc_card *card = platform_get_drvdata(pdev);
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snd_soc_unregister_card(card);
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return 0;
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}
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static struct platform_driver speyside_wm8962_driver = {
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.driver = {
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.name = "speyside-wm8962",
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.owner = THIS_MODULE,
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.pm = &snd_soc_pm_ops,
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},
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.probe = speyside_wm8962_probe,
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.remove = __devexit_p(speyside_wm8962_remove),
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};
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static int __init speyside_wm8962_audio_init(void)
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{
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return platform_driver_register(&speyside_wm8962_driver);
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}
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module_init(speyside_wm8962_audio_init);
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static void __exit speyside_wm8962_audio_exit(void)
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{
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platform_driver_unregister(&speyside_wm8962_driver);
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}
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module_exit(speyside_wm8962_audio_exit);
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MODULE_DESCRIPTION("Speyside WM8962 audio support");
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MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
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MODULE_LICENSE("GPL");
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MODULE_ALIAS("platform:speyside-wm8962");
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