178 lines
4.6 KiB
C
178 lines
4.6 KiB
C
/*
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* smdk_wm8994.c
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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 "../codecs/wm8994.h"
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#include <sound/pcm_params.h>
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/*
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* Default CFG switch settings to use this driver:
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* SMDKV310: CFG5-1000, CFG7-111111
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*/
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/*
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* Configure audio route as :-
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* $ amixer sset 'DAC1' on,on
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* $ amixer sset 'Right Headphone Mux' 'DAC'
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* $ amixer sset 'Left Headphone Mux' 'DAC'
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* $ amixer sset 'DAC1R Mixer AIF1.1' on
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* $ amixer sset 'DAC1L Mixer AIF1.1' on
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* $ amixer sset 'IN2L' on
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* $ amixer sset 'IN2L PGA IN2LN' on
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* $ amixer sset 'MIXINL IN2L' on
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* $ amixer sset 'AIF1ADC1L Mixer ADC/DMIC' on
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* $ amixer sset 'IN2R' on
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* $ amixer sset 'IN2R PGA IN2RN' on
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* $ amixer sset 'MIXINR IN2R' on
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* $ amixer sset 'AIF1ADC1R Mixer ADC/DMIC' on
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*/
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/* SMDK has a 16.934MHZ crystal attached to WM8994 */
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#define SMDK_WM8994_FREQ 16934000
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static int smdk_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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unsigned int pll_out;
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int ret;
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/* AIF1CLK should be >=3MHz for optimal performance */
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if (params_format(params) == SNDRV_PCM_FORMAT_S24_LE)
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pll_out = params_rate(params) * 384;
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else if (params_rate(params) == 8000 || params_rate(params) == 11025)
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pll_out = params_rate(params) * 512;
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else
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pll_out = params_rate(params) * 256;
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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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ret = snd_soc_dai_set_pll(codec_dai, WM8994_FLL1, WM8994_FLL_SRC_MCLK1,
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SMDK_WM8994_FREQ, pll_out);
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if (ret < 0)
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return ret;
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ret = snd_soc_dai_set_sysclk(codec_dai, WM8994_SYSCLK_FLL1,
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pll_out, SND_SOC_CLOCK_IN);
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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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/*
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* SMDK WM8994 DAI operations.
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*/
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static struct snd_soc_ops smdk_ops = {
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.hw_params = smdk_hw_params,
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};
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static int smdk_wm8994_init_paiftx(struct snd_soc_pcm_runtime *rtd)
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{
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struct snd_soc_codec *codec = rtd->codec;
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struct snd_soc_dapm_context *dapm = &codec->dapm;
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/* HeadPhone */
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snd_soc_dapm_enable_pin(dapm, "HPOUT1R");
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snd_soc_dapm_enable_pin(dapm, "HPOUT1L");
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/* MicIn */
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snd_soc_dapm_enable_pin(dapm, "IN1LN");
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snd_soc_dapm_enable_pin(dapm, "IN1RN");
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/* LineIn */
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snd_soc_dapm_enable_pin(dapm, "IN2LN");
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snd_soc_dapm_enable_pin(dapm, "IN2RN");
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/* Other pins NC */
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snd_soc_dapm_nc_pin(dapm, "HPOUT2P");
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snd_soc_dapm_nc_pin(dapm, "HPOUT2N");
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snd_soc_dapm_nc_pin(dapm, "SPKOUTLN");
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snd_soc_dapm_nc_pin(dapm, "SPKOUTLP");
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snd_soc_dapm_nc_pin(dapm, "SPKOUTRP");
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snd_soc_dapm_nc_pin(dapm, "SPKOUTRN");
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snd_soc_dapm_nc_pin(dapm, "LINEOUT1N");
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snd_soc_dapm_nc_pin(dapm, "LINEOUT1P");
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snd_soc_dapm_nc_pin(dapm, "LINEOUT2N");
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snd_soc_dapm_nc_pin(dapm, "LINEOUT2P");
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snd_soc_dapm_nc_pin(dapm, "IN1LP");
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snd_soc_dapm_nc_pin(dapm, "IN2LP:VXRN");
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snd_soc_dapm_nc_pin(dapm, "IN1RP");
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snd_soc_dapm_nc_pin(dapm, "IN2RP:VXRP");
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return 0;
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}
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static struct snd_soc_dai_link smdk_dai[] = {
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{ /* Primary DAI i/f */
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.name = "WM8994 AIF1",
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.stream_name = "Pri_Dai",
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.cpu_dai_name = "samsung-i2s.0",
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.codec_dai_name = "wm8994-aif1",
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.platform_name = "samsung-audio",
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.codec_name = "wm8994-codec",
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.init = smdk_wm8994_init_paiftx,
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.ops = &smdk_ops,
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}, { /* Sec_Fifo Playback i/f */
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.name = "Sec_FIFO TX",
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.stream_name = "Sec_Dai",
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.cpu_dai_name = "samsung-i2s.4",
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.codec_dai_name = "wm8994-aif1",
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.platform_name = "samsung-audio",
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.codec_name = "wm8994-codec",
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.ops = &smdk_ops,
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},
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};
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static struct snd_soc_card smdk = {
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.name = "SMDK-I2S",
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.dai_link = smdk_dai,
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.num_links = ARRAY_SIZE(smdk_dai),
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};
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static struct platform_device *smdk_snd_device;
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static int __init smdk_audio_init(void)
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{
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int ret;
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smdk_snd_device = platform_device_alloc("soc-audio", -1);
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if (!smdk_snd_device)
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return -ENOMEM;
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platform_set_drvdata(smdk_snd_device, &smdk);
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ret = platform_device_add(smdk_snd_device);
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if (ret)
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platform_device_put(smdk_snd_device);
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return ret;
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}
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module_init(smdk_audio_init);
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static void __exit smdk_audio_exit(void)
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{
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platform_device_unregister(smdk_snd_device);
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}
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module_exit(smdk_audio_exit);
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MODULE_DESCRIPTION("ALSA SoC SMDK WM8994");
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MODULE_LICENSE("GPL");
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