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 <sound/soc.h> 13 #include <linux/module.h> 14 #include <linux/of.h> 15 #include <linux/of_device.h> 16 17 /* 18 * Default CFG switch settings to use this driver: 19 * SMDKV310: CFG5-1000, CFG7-111111 20 */ 21 22 /* 23 * Configure audio route as :- 24 * $ amixer sset 'DAC1' on,on 25 * $ amixer sset 'Right Headphone Mux' 'DAC' 26 * $ amixer sset 'Left Headphone Mux' 'DAC' 27 * $ amixer sset 'DAC1R Mixer AIF1.1' on 28 * $ amixer sset 'DAC1L Mixer AIF1.1' on 29 * $ amixer sset 'IN2L' on 30 * $ amixer sset 'IN2L PGA IN2LN' on 31 * $ amixer sset 'MIXINL IN2L' on 32 * $ amixer sset 'AIF1ADC1L Mixer ADC/DMIC' on 33 * $ amixer sset 'IN2R' on 34 * $ amixer sset 'IN2R PGA IN2RN' on 35 * $ amixer sset 'MIXINR IN2R' on 36 * $ amixer sset 'AIF1ADC1R Mixer ADC/DMIC' on 37 */ 38 39 /* SMDK has a 16.934MHZ crystal attached to WM8994 */ 40 #define SMDK_WM8994_FREQ 16934000 41 42 struct smdk_wm8994_data { 43 int mclk1_rate; 44 }; 45 46 /* Default SMDKs */ 47 static struct smdk_wm8994_data smdk_board_data = { 48 .mclk1_rate = SMDK_WM8994_FREQ, 49 }; 50 51 static int smdk_hw_params(struct snd_pcm_substream *substream, 52 struct snd_pcm_hw_params *params) 53 { 54 struct snd_soc_pcm_runtime *rtd = substream->private_data; 55 struct snd_soc_dai *codec_dai = rtd->codec_dai; 56 unsigned int pll_out; 57 int ret; 58 59 /* AIF1CLK should be >=3MHz for optimal performance */ 60 if (params_width(params) == 24) 61 pll_out = params_rate(params) * 384; 62 else if (params_rate(params) == 8000 || params_rate(params) == 11025) 63 pll_out = params_rate(params) * 512; 64 else 65 pll_out = params_rate(params) * 256; 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_dapm_context *dapm = &rtd->card->dapm; 90 91 /* Other pins NC */ 92 snd_soc_dapm_nc_pin(dapm, "HPOUT2P"); 93 snd_soc_dapm_nc_pin(dapm, "HPOUT2N"); 94 snd_soc_dapm_nc_pin(dapm, "SPKOUTLN"); 95 snd_soc_dapm_nc_pin(dapm, "SPKOUTLP"); 96 snd_soc_dapm_nc_pin(dapm, "SPKOUTRP"); 97 snd_soc_dapm_nc_pin(dapm, "SPKOUTRN"); 98 snd_soc_dapm_nc_pin(dapm, "LINEOUT1N"); 99 snd_soc_dapm_nc_pin(dapm, "LINEOUT1P"); 100 snd_soc_dapm_nc_pin(dapm, "LINEOUT2N"); 101 snd_soc_dapm_nc_pin(dapm, "LINEOUT2P"); 102 snd_soc_dapm_nc_pin(dapm, "IN1LP"); 103 snd_soc_dapm_nc_pin(dapm, "IN2LP:VXRN"); 104 snd_soc_dapm_nc_pin(dapm, "IN1RP"); 105 snd_soc_dapm_nc_pin(dapm, "IN2RP:VXRP"); 106 107 return 0; 108 } 109 110 static struct snd_soc_dai_link smdk_dai[] = { 111 { /* Primary DAI i/f */ 112 .name = "WM8994 AIF1", 113 .stream_name = "Pri_Dai", 114 .cpu_dai_name = "samsung-i2s.0", 115 .codec_dai_name = "wm8994-aif1", 116 .platform_name = "samsung-i2s.0", 117 .codec_name = "wm8994-codec", 118 .init = smdk_wm8994_init_paiftx, 119 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | 120 SND_SOC_DAIFMT_CBM_CFM, 121 .ops = &smdk_ops, 122 }, { /* Sec_Fifo Playback i/f */ 123 .name = "Sec_FIFO TX", 124 .stream_name = "Sec_Dai", 125 .cpu_dai_name = "samsung-i2s-sec", 126 .codec_dai_name = "wm8994-aif1", 127 .platform_name = "samsung-i2s-sec", 128 .codec_name = "wm8994-codec", 129 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | 130 SND_SOC_DAIFMT_CBM_CFM, 131 .ops = &smdk_ops, 132 }, 133 }; 134 135 static struct snd_soc_card smdk = { 136 .name = "SMDK-I2S", 137 .owner = THIS_MODULE, 138 .dai_link = smdk_dai, 139 .num_links = ARRAY_SIZE(smdk_dai), 140 }; 141 142 static const struct of_device_id samsung_wm8994_of_match[] = { 143 { .compatible = "samsung,smdk-wm8994", .data = &smdk_board_data }, 144 {}, 145 }; 146 MODULE_DEVICE_TABLE(of, samsung_wm8994_of_match); 147 148 static int smdk_audio_probe(struct platform_device *pdev) 149 { 150 int ret; 151 struct device_node *np = pdev->dev.of_node; 152 struct snd_soc_card *card = &smdk; 153 struct smdk_wm8994_data *board; 154 const struct of_device_id *id; 155 156 card->dev = &pdev->dev; 157 158 board = devm_kzalloc(&pdev->dev, sizeof(*board), GFP_KERNEL); 159 if (!board) 160 return -ENOMEM; 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 id = of_match_device(of_match_ptr(samsung_wm8994_of_match), &pdev->dev); 177 if (id) 178 *board = *((struct smdk_wm8994_data *)id->data); 179 180 platform_set_drvdata(pdev, board); 181 182 ret = devm_snd_soc_register_card(&pdev->dev, card); 183 184 if (ret) 185 dev_err(&pdev->dev, "snd_soc_register_card() failed:%d\n", ret); 186 187 return ret; 188 } 189 190 static struct platform_driver smdk_audio_driver = { 191 .driver = { 192 .name = "smdk-audio-wm8994", 193 .of_match_table = of_match_ptr(samsung_wm8994_of_match), 194 .pm = &snd_soc_pm_ops, 195 }, 196 .probe = smdk_audio_probe, 197 }; 198 199 module_platform_driver(smdk_audio_driver); 200 201 MODULE_DESCRIPTION("ALSA SoC SMDK WM8994"); 202 MODULE_LICENSE("GPL"); 203 MODULE_ALIAS("platform:smdk-audio-wm8994"); 204