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 #include <linux/module.h> 13 14 /* 15 * Default CFG switch settings to use this driver: 16 * SMDKV310: CFG5-1000, CFG7-111111 17 */ 18 19 /* 20 * Configure audio route as :- 21 * $ amixer sset 'DAC1' on,on 22 * $ amixer sset 'Right Headphone Mux' 'DAC' 23 * $ amixer sset 'Left Headphone Mux' 'DAC' 24 * $ amixer sset 'DAC1R Mixer AIF1.1' on 25 * $ amixer sset 'DAC1L Mixer AIF1.1' on 26 * $ amixer sset 'IN2L' on 27 * $ amixer sset 'IN2L PGA IN2LN' on 28 * $ amixer sset 'MIXINL IN2L' on 29 * $ amixer sset 'AIF1ADC1L Mixer ADC/DMIC' on 30 * $ amixer sset 'IN2R' on 31 * $ amixer sset 'IN2R PGA IN2RN' on 32 * $ amixer sset 'MIXINR IN2R' on 33 * $ amixer sset 'AIF1ADC1R Mixer ADC/DMIC' on 34 */ 35 36 /* SMDK has a 16.934MHZ crystal attached to WM8994 */ 37 #define SMDK_WM8994_FREQ 16934000 38 39 static int smdk_hw_params(struct snd_pcm_substream *substream, 40 struct snd_pcm_hw_params *params) 41 { 42 struct snd_soc_pcm_runtime *rtd = substream->private_data; 43 struct snd_soc_dai *cpu_dai = rtd->cpu_dai; 44 struct snd_soc_dai *codec_dai = rtd->codec_dai; 45 unsigned int pll_out; 46 int ret; 47 48 /* AIF1CLK should be >=3MHz for optimal performance */ 49 if (params_format(params) == SNDRV_PCM_FORMAT_S24_LE) 50 pll_out = params_rate(params) * 384; 51 else if (params_rate(params) == 8000 || params_rate(params) == 11025) 52 pll_out = params_rate(params) * 512; 53 else 54 pll_out = params_rate(params) * 256; 55 56 ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S 57 | SND_SOC_DAIFMT_NB_NF 58 | SND_SOC_DAIFMT_CBM_CFM); 59 if (ret < 0) 60 return ret; 61 62 ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S 63 | SND_SOC_DAIFMT_NB_NF 64 | SND_SOC_DAIFMT_CBM_CFM); 65 if (ret < 0) 66 return ret; 67 68 ret = snd_soc_dai_set_pll(codec_dai, WM8994_FLL1, WM8994_FLL_SRC_MCLK1, 69 SMDK_WM8994_FREQ, pll_out); 70 if (ret < 0) 71 return ret; 72 73 ret = snd_soc_dai_set_sysclk(codec_dai, WM8994_SYSCLK_FLL1, 74 pll_out, SND_SOC_CLOCK_IN); 75 if (ret < 0) 76 return ret; 77 78 return 0; 79 } 80 81 /* 82 * SMDK WM8994 DAI operations. 83 */ 84 static struct snd_soc_ops smdk_ops = { 85 .hw_params = smdk_hw_params, 86 }; 87 88 static int smdk_wm8994_init_paiftx(struct snd_soc_pcm_runtime *rtd) 89 { 90 struct snd_soc_codec *codec = rtd->codec; 91 struct snd_soc_dapm_context *dapm = &codec->dapm; 92 93 /* HeadPhone */ 94 snd_soc_dapm_enable_pin(dapm, "HPOUT1R"); 95 snd_soc_dapm_enable_pin(dapm, "HPOUT1L"); 96 97 /* MicIn */ 98 snd_soc_dapm_enable_pin(dapm, "IN1LN"); 99 snd_soc_dapm_enable_pin(dapm, "IN1RN"); 100 101 /* LineIn */ 102 snd_soc_dapm_enable_pin(dapm, "IN2LN"); 103 snd_soc_dapm_enable_pin(dapm, "IN2RN"); 104 105 /* Other pins NC */ 106 snd_soc_dapm_nc_pin(dapm, "HPOUT2P"); 107 snd_soc_dapm_nc_pin(dapm, "HPOUT2N"); 108 snd_soc_dapm_nc_pin(dapm, "SPKOUTLN"); 109 snd_soc_dapm_nc_pin(dapm, "SPKOUTLP"); 110 snd_soc_dapm_nc_pin(dapm, "SPKOUTRP"); 111 snd_soc_dapm_nc_pin(dapm, "SPKOUTRN"); 112 snd_soc_dapm_nc_pin(dapm, "LINEOUT1N"); 113 snd_soc_dapm_nc_pin(dapm, "LINEOUT1P"); 114 snd_soc_dapm_nc_pin(dapm, "LINEOUT2N"); 115 snd_soc_dapm_nc_pin(dapm, "LINEOUT2P"); 116 snd_soc_dapm_nc_pin(dapm, "IN1LP"); 117 snd_soc_dapm_nc_pin(dapm, "IN2LP:VXRN"); 118 snd_soc_dapm_nc_pin(dapm, "IN1RP"); 119 snd_soc_dapm_nc_pin(dapm, "IN2RP:VXRP"); 120 121 return 0; 122 } 123 124 static struct snd_soc_dai_link smdk_dai[] = { 125 { /* Primary DAI i/f */ 126 .name = "WM8994 AIF1", 127 .stream_name = "Pri_Dai", 128 .cpu_dai_name = "samsung-i2s.0", 129 .codec_dai_name = "wm8994-aif1", 130 .platform_name = "samsung-i2s.0", 131 .codec_name = "wm8994-codec", 132 .init = smdk_wm8994_init_paiftx, 133 .ops = &smdk_ops, 134 }, { /* Sec_Fifo Playback i/f */ 135 .name = "Sec_FIFO TX", 136 .stream_name = "Sec_Dai", 137 .cpu_dai_name = "samsung-i2s.4", 138 .codec_dai_name = "wm8994-aif1", 139 .platform_name = "samsung-i2s.4", 140 .codec_name = "wm8994-codec", 141 .ops = &smdk_ops, 142 }, 143 }; 144 145 static struct snd_soc_card smdk = { 146 .name = "SMDK-I2S", 147 .owner = THIS_MODULE, 148 .dai_link = smdk_dai, 149 .num_links = ARRAY_SIZE(smdk_dai), 150 }; 151 152 153 static int smdk_audio_probe(struct platform_device *pdev) 154 { 155 int ret; 156 struct snd_soc_card *card = &smdk; 157 158 card->dev = &pdev->dev; 159 ret = snd_soc_register_card(card); 160 161 if (ret) 162 dev_err(&pdev->dev, "snd_soc_register_card() failed:%d\n", ret); 163 164 return ret; 165 } 166 167 static int smdk_audio_remove(struct platform_device *pdev) 168 { 169 struct snd_soc_card *card = platform_get_drvdata(pdev); 170 171 snd_soc_unregister_card(card); 172 173 return 0; 174 } 175 176 static struct platform_driver smdk_audio_driver = { 177 .driver = { 178 .name = "smdk-audio", 179 .owner = THIS_MODULE, 180 }, 181 .probe = smdk_audio_probe, 182 .remove = smdk_audio_remove, 183 }; 184 185 module_platform_driver(smdk_audio_driver); 186 187 MODULE_DESCRIPTION("ALSA SoC SMDK WM8994"); 188 MODULE_LICENSE("GPL"); 189 MODULE_ALIAS("platform:smdk-audio"); 190