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 #include <linux/of.h> 14 15 /* 16 * Default CFG switch settings to use this driver: 17 * SMDKV310: CFG5-1000, CFG7-111111 18 */ 19 20 /* 21 * Configure audio route as :- 22 * $ amixer sset 'DAC1' on,on 23 * $ amixer sset 'Right Headphone Mux' 'DAC' 24 * $ amixer sset 'Left Headphone Mux' 'DAC' 25 * $ amixer sset 'DAC1R Mixer AIF1.1' on 26 * $ amixer sset 'DAC1L Mixer AIF1.1' on 27 * $ amixer sset 'IN2L' on 28 * $ amixer sset 'IN2L PGA IN2LN' on 29 * $ amixer sset 'MIXINL IN2L' on 30 * $ amixer sset 'AIF1ADC1L Mixer ADC/DMIC' on 31 * $ amixer sset 'IN2R' on 32 * $ amixer sset 'IN2R PGA IN2RN' on 33 * $ amixer sset 'MIXINR IN2R' on 34 * $ amixer sset 'AIF1ADC1R Mixer ADC/DMIC' on 35 */ 36 37 /* SMDK has a 16.934MHZ crystal attached to WM8994 */ 38 #define SMDK_WM8994_FREQ 16934000 39 40 static int smdk_hw_params(struct snd_pcm_substream *substream, 41 struct snd_pcm_hw_params *params) 42 { 43 struct snd_soc_pcm_runtime *rtd = substream->private_data; 44 struct snd_soc_dai *cpu_dai = rtd->cpu_dai; 45 struct snd_soc_dai *codec_dai = rtd->codec_dai; 46 unsigned int pll_out; 47 int ret; 48 49 /* AIF1CLK should be >=3MHz for optimal performance */ 50 if (params_format(params) == SNDRV_PCM_FORMAT_S24_LE) 51 pll_out = params_rate(params) * 384; 52 else if (params_rate(params) == 8000 || params_rate(params) == 11025) 53 pll_out = params_rate(params) * 512; 54 else 55 pll_out = params_rate(params) * 256; 56 57 ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S 58 | SND_SOC_DAIFMT_NB_NF 59 | SND_SOC_DAIFMT_CBM_CFM); 60 if (ret < 0) 61 return ret; 62 63 ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S 64 | SND_SOC_DAIFMT_NB_NF 65 | SND_SOC_DAIFMT_CBM_CFM); 66 if (ret < 0) 67 return ret; 68 69 ret = snd_soc_dai_set_pll(codec_dai, WM8994_FLL1, WM8994_FLL_SRC_MCLK1, 70 SMDK_WM8994_FREQ, pll_out); 71 if (ret < 0) 72 return ret; 73 74 ret = snd_soc_dai_set_sysclk(codec_dai, WM8994_SYSCLK_FLL1, 75 pll_out, SND_SOC_CLOCK_IN); 76 if (ret < 0) 77 return ret; 78 79 return 0; 80 } 81 82 /* 83 * SMDK WM8994 DAI operations. 84 */ 85 static struct snd_soc_ops smdk_ops = { 86 .hw_params = smdk_hw_params, 87 }; 88 89 static int smdk_wm8994_init_paiftx(struct snd_soc_pcm_runtime *rtd) 90 { 91 struct snd_soc_codec *codec = rtd->codec; 92 struct snd_soc_dapm_context *dapm = &codec->dapm; 93 94 /* HeadPhone */ 95 snd_soc_dapm_enable_pin(dapm, "HPOUT1R"); 96 snd_soc_dapm_enable_pin(dapm, "HPOUT1L"); 97 98 /* MicIn */ 99 snd_soc_dapm_enable_pin(dapm, "IN1LN"); 100 snd_soc_dapm_enable_pin(dapm, "IN1RN"); 101 102 /* LineIn */ 103 snd_soc_dapm_enable_pin(dapm, "IN2LN"); 104 snd_soc_dapm_enable_pin(dapm, "IN2RN"); 105 106 /* Other pins NC */ 107 snd_soc_dapm_nc_pin(dapm, "HPOUT2P"); 108 snd_soc_dapm_nc_pin(dapm, "HPOUT2N"); 109 snd_soc_dapm_nc_pin(dapm, "SPKOUTLN"); 110 snd_soc_dapm_nc_pin(dapm, "SPKOUTLP"); 111 snd_soc_dapm_nc_pin(dapm, "SPKOUTRP"); 112 snd_soc_dapm_nc_pin(dapm, "SPKOUTRN"); 113 snd_soc_dapm_nc_pin(dapm, "LINEOUT1N"); 114 snd_soc_dapm_nc_pin(dapm, "LINEOUT1P"); 115 snd_soc_dapm_nc_pin(dapm, "LINEOUT2N"); 116 snd_soc_dapm_nc_pin(dapm, "LINEOUT2P"); 117 snd_soc_dapm_nc_pin(dapm, "IN1LP"); 118 snd_soc_dapm_nc_pin(dapm, "IN2LP:VXRN"); 119 snd_soc_dapm_nc_pin(dapm, "IN1RP"); 120 snd_soc_dapm_nc_pin(dapm, "IN2RP:VXRP"); 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-i2s.0", 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-sec", 139 .codec_dai_name = "wm8994-aif1", 140 .platform_name = "samsung-i2s-sec", 141 .codec_name = "wm8994-codec", 142 .ops = &smdk_ops, 143 }, 144 }; 145 146 static struct snd_soc_card smdk = { 147 .name = "SMDK-I2S", 148 .owner = THIS_MODULE, 149 .dai_link = smdk_dai, 150 .num_links = ARRAY_SIZE(smdk_dai), 151 }; 152 153 154 static int smdk_audio_probe(struct platform_device *pdev) 155 { 156 int ret; 157 struct device_node *np = pdev->dev.of_node; 158 struct snd_soc_card *card = &smdk; 159 160 card->dev = &pdev->dev; 161 162 if (np) { 163 smdk_dai[0].cpu_dai_name = NULL; 164 smdk_dai[0].cpu_of_node = of_parse_phandle(np, 165 "samsung,i2s-controller", 0); 166 if (!smdk_dai[0].cpu_of_node) { 167 dev_err(&pdev->dev, 168 "Property 'samsung,i2s-controller' missing or invalid\n"); 169 ret = -EINVAL; 170 } 171 172 smdk_dai[0].platform_name = NULL; 173 smdk_dai[0].platform_of_node = smdk_dai[0].cpu_of_node; 174 } 175 176 ret = snd_soc_register_card(card); 177 178 if (ret) 179 dev_err(&pdev->dev, "snd_soc_register_card() failed:%d\n", ret); 180 181 return ret; 182 } 183 184 static int smdk_audio_remove(struct platform_device *pdev) 185 { 186 struct snd_soc_card *card = platform_get_drvdata(pdev); 187 188 snd_soc_unregister_card(card); 189 190 return 0; 191 } 192 193 #ifdef CONFIG_OF 194 static const struct of_device_id samsung_wm8994_of_match[] = { 195 { .compatible = "samsung,smdk-wm8994", }, 196 {}, 197 }; 198 MODULE_DEVICE_TABLE(of, samsung_wm8994_of_match); 199 #endif /* CONFIG_OF */ 200 201 static struct platform_driver smdk_audio_driver = { 202 .driver = { 203 .name = "smdk-audio", 204 .owner = THIS_MODULE, 205 .of_match_table = of_match_ptr(samsung_wm8994_of_match), 206 }, 207 .probe = smdk_audio_probe, 208 .remove = smdk_audio_remove, 209 }; 210 211 module_platform_driver(smdk_audio_driver); 212 213 MODULE_DESCRIPTION("ALSA SoC SMDK WM8994"); 214 MODULE_LICENSE("GPL"); 215 MODULE_ALIAS("platform:smdk-audio"); 216