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