1 /* 2 * smdk_wm8994.c 3 * 4 * This program is free software; you can redistribute it and/or modify it 5 * under the terms of the GNU General Public License as published by the 6 * Free Software Foundation; either version 2 of the License, or (at your 7 * option) any later version. 8 */ 9 10 #include "../codecs/wm8994.h" 11 #include <sound/pcm_params.h> 12 13 /* 14 * Default CFG switch settings to use this driver: 15 * SMDKV310: CFG5-1000, CFG7-111111 16 */ 17 18 /* 19 * Configure audio route as :- 20 * $ amixer sset 'DAC1' on,on 21 * $ amixer sset 'Right Headphone Mux' 'DAC' 22 * $ amixer sset 'Left Headphone Mux' 'DAC' 23 * $ amixer sset 'DAC1R Mixer AIF1.1' on 24 * $ amixer sset 'DAC1L Mixer AIF1.1' on 25 * $ amixer sset 'IN2L' on 26 * $ amixer sset 'IN2L PGA IN2LN' on 27 * $ amixer sset 'MIXINL IN2L' on 28 * $ amixer sset 'AIF1ADC1L Mixer ADC/DMIC' on 29 * $ amixer sset 'IN2R' on 30 * $ amixer sset 'IN2R PGA IN2RN' on 31 * $ amixer sset 'MIXINR IN2R' on 32 * $ amixer sset 'AIF1ADC1R Mixer ADC/DMIC' on 33 */ 34 35 /* SMDK has a 16.934MHZ crystal attached to WM8994 */ 36 #define SMDK_WM8994_FREQ 16934000 37 38 static int smdk_hw_params(struct snd_pcm_substream *substream, 39 struct snd_pcm_hw_params *params) 40 { 41 struct snd_soc_pcm_runtime *rtd = substream->private_data; 42 struct snd_soc_dai *cpu_dai = rtd->cpu_dai; 43 struct snd_soc_dai *codec_dai = rtd->codec_dai; 44 unsigned int pll_out; 45 int ret; 46 47 /* AIF1CLK should be >=3MHz for optimal performance */ 48 if (params_format(params) == SNDRV_PCM_FORMAT_S24_LE) 49 pll_out = params_rate(params) * 384; 50 else if (params_rate(params) == 8000 || params_rate(params) == 11025) 51 pll_out = params_rate(params) * 512; 52 else 53 pll_out = params_rate(params) * 256; 54 55 ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S 56 | SND_SOC_DAIFMT_NB_NF 57 | SND_SOC_DAIFMT_CBM_CFM); 58 if (ret < 0) 59 return ret; 60 61 ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S 62 | SND_SOC_DAIFMT_NB_NF 63 | SND_SOC_DAIFMT_CBM_CFM); 64 if (ret < 0) 65 return ret; 66 67 ret = snd_soc_dai_set_pll(codec_dai, WM8994_FLL1, WM8994_FLL_SRC_MCLK1, 68 SMDK_WM8994_FREQ, pll_out); 69 if (ret < 0) 70 return ret; 71 72 ret = snd_soc_dai_set_sysclk(codec_dai, WM8994_SYSCLK_FLL1, 73 pll_out, SND_SOC_CLOCK_IN); 74 if (ret < 0) 75 return ret; 76 77 return 0; 78 } 79 80 /* 81 * SMDK WM8994 DAI operations. 82 */ 83 static struct snd_soc_ops smdk_ops = { 84 .hw_params = smdk_hw_params, 85 }; 86 87 static int smdk_wm8994_init_paiftx(struct snd_soc_pcm_runtime *rtd) 88 { 89 struct snd_soc_codec *codec = rtd->codec; 90 struct snd_soc_dapm_context *dapm = &codec->dapm; 91 92 /* HeadPhone */ 93 snd_soc_dapm_enable_pin(dapm, "HPOUT1R"); 94 snd_soc_dapm_enable_pin(dapm, "HPOUT1L"); 95 96 /* MicIn */ 97 snd_soc_dapm_enable_pin(dapm, "IN1LN"); 98 snd_soc_dapm_enable_pin(dapm, "IN1RN"); 99 100 /* LineIn */ 101 snd_soc_dapm_enable_pin(dapm, "IN2LN"); 102 snd_soc_dapm_enable_pin(dapm, "IN2RN"); 103 104 /* Other pins NC */ 105 snd_soc_dapm_nc_pin(dapm, "HPOUT2P"); 106 snd_soc_dapm_nc_pin(dapm, "HPOUT2N"); 107 snd_soc_dapm_nc_pin(dapm, "SPKOUTLN"); 108 snd_soc_dapm_nc_pin(dapm, "SPKOUTLP"); 109 snd_soc_dapm_nc_pin(dapm, "SPKOUTRP"); 110 snd_soc_dapm_nc_pin(dapm, "SPKOUTRN"); 111 snd_soc_dapm_nc_pin(dapm, "LINEOUT1N"); 112 snd_soc_dapm_nc_pin(dapm, "LINEOUT1P"); 113 snd_soc_dapm_nc_pin(dapm, "LINEOUT2N"); 114 snd_soc_dapm_nc_pin(dapm, "LINEOUT2P"); 115 snd_soc_dapm_nc_pin(dapm, "IN1LP"); 116 snd_soc_dapm_nc_pin(dapm, "IN2LP:VXRN"); 117 snd_soc_dapm_nc_pin(dapm, "IN1RP"); 118 snd_soc_dapm_nc_pin(dapm, "IN2RP:VXRP"); 119 120 snd_soc_dapm_sync(dapm); 121 122 return 0; 123 } 124 125 static struct snd_soc_dai_link smdk_dai[] = { 126 { /* Primary DAI i/f */ 127 .name = "WM8994 AIF1", 128 .stream_name = "Pri_Dai", 129 .cpu_dai_name = "samsung-i2s.0", 130 .codec_dai_name = "wm8994-aif1", 131 .platform_name = "samsung-audio", 132 .codec_name = "wm8994-codec", 133 .init = smdk_wm8994_init_paiftx, 134 .ops = &smdk_ops, 135 }, { /* Sec_Fifo Playback i/f */ 136 .name = "Sec_FIFO TX", 137 .stream_name = "Sec_Dai", 138 .cpu_dai_name = "samsung-i2s.4", 139 .codec_dai_name = "wm8994-aif1", 140 .platform_name = "samsung-audio", 141 .codec_name = "wm8994-codec", 142 .ops = &smdk_ops, 143 }, 144 }; 145 146 static struct snd_soc_card smdk = { 147 .name = "SMDK-I2S", 148 .dai_link = smdk_dai, 149 .num_links = ARRAY_SIZE(smdk_dai), 150 }; 151 152 static struct platform_device *smdk_snd_device; 153 154 static int __init smdk_audio_init(void) 155 { 156 int ret; 157 158 smdk_snd_device = platform_device_alloc("soc-audio", -1); 159 if (!smdk_snd_device) 160 return -ENOMEM; 161 162 platform_set_drvdata(smdk_snd_device, &smdk); 163 164 ret = platform_device_add(smdk_snd_device); 165 if (ret) 166 platform_device_put(smdk_snd_device); 167 168 return ret; 169 } 170 module_init(smdk_audio_init); 171 172 static void __exit smdk_audio_exit(void) 173 { 174 platform_device_unregister(smdk_snd_device); 175 } 176 module_exit(smdk_audio_exit); 177 178 MODULE_DESCRIPTION("ALSA SoC SMDK WM8994"); 179 MODULE_LICENSE("GPL"); 180