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_codec *codec = rtd->codec; 90 struct snd_soc_dapm_context *dapm = &codec->dapm; 91 92 /* Other pins NC */ 93 snd_soc_dapm_nc_pin(dapm, "HPOUT2P"); 94 snd_soc_dapm_nc_pin(dapm, "HPOUT2N"); 95 snd_soc_dapm_nc_pin(dapm, "SPKOUTLN"); 96 snd_soc_dapm_nc_pin(dapm, "SPKOUTLP"); 97 snd_soc_dapm_nc_pin(dapm, "SPKOUTRP"); 98 snd_soc_dapm_nc_pin(dapm, "SPKOUTRN"); 99 snd_soc_dapm_nc_pin(dapm, "LINEOUT1N"); 100 snd_soc_dapm_nc_pin(dapm, "LINEOUT1P"); 101 snd_soc_dapm_nc_pin(dapm, "LINEOUT2N"); 102 snd_soc_dapm_nc_pin(dapm, "LINEOUT2P"); 103 snd_soc_dapm_nc_pin(dapm, "IN1LP"); 104 snd_soc_dapm_nc_pin(dapm, "IN2LP:VXRN"); 105 snd_soc_dapm_nc_pin(dapm, "IN1RP"); 106 snd_soc_dapm_nc_pin(dapm, "IN2RP:VXRP"); 107 108 return 0; 109 } 110 111 static struct snd_soc_dai_link smdk_dai[] = { 112 { /* Primary DAI i/f */ 113 .name = "WM8994 AIF1", 114 .stream_name = "Pri_Dai", 115 .cpu_dai_name = "samsung-i2s.0", 116 .codec_dai_name = "wm8994-aif1", 117 .platform_name = "samsung-i2s.0", 118 .codec_name = "wm8994-codec", 119 .init = smdk_wm8994_init_paiftx, 120 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | 121 SND_SOC_DAIFMT_CBM_CFM, 122 .ops = &smdk_ops, 123 }, { /* Sec_Fifo Playback i/f */ 124 .name = "Sec_FIFO TX", 125 .stream_name = "Sec_Dai", 126 .cpu_dai_name = "samsung-i2s-sec", 127 .codec_dai_name = "wm8994-aif1", 128 .platform_name = "samsung-i2s-sec", 129 .codec_name = "wm8994-codec", 130 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | 131 SND_SOC_DAIFMT_CBM_CFM, 132 .ops = &smdk_ops, 133 }, 134 }; 135 136 static struct snd_soc_card smdk = { 137 .name = "SMDK-I2S", 138 .owner = THIS_MODULE, 139 .dai_link = smdk_dai, 140 .num_links = ARRAY_SIZE(smdk_dai), 141 }; 142 143 static const struct of_device_id samsung_wm8994_of_match[] = { 144 { .compatible = "samsung,smdk-wm8994", .data = &smdk_board_data }, 145 {}, 146 }; 147 MODULE_DEVICE_TABLE(of, samsung_wm8994_of_match); 148 149 static int smdk_audio_probe(struct platform_device *pdev) 150 { 151 int ret; 152 struct device_node *np = pdev->dev.of_node; 153 struct snd_soc_card *card = &smdk; 154 struct smdk_wm8994_data *board; 155 const struct of_device_id *id; 156 157 card->dev = &pdev->dev; 158 159 board = devm_kzalloc(&pdev->dev, sizeof(*board), GFP_KERNEL); 160 if (!board) 161 return -ENOMEM; 162 163 if (np) { 164 smdk_dai[0].cpu_dai_name = NULL; 165 smdk_dai[0].cpu_of_node = of_parse_phandle(np, 166 "samsung,i2s-controller", 0); 167 if (!smdk_dai[0].cpu_of_node) { 168 dev_err(&pdev->dev, 169 "Property 'samsung,i2s-controller' missing or invalid\n"); 170 ret = -EINVAL; 171 } 172 173 smdk_dai[0].platform_name = NULL; 174 smdk_dai[0].platform_of_node = smdk_dai[0].cpu_of_node; 175 } 176 177 id = of_match_device(of_match_ptr(samsung_wm8994_of_match), &pdev->dev); 178 if (id) 179 *board = *((struct smdk_wm8994_data *)id->data); 180 181 platform_set_drvdata(pdev, board); 182 183 ret = devm_snd_soc_register_card(&pdev->dev, card); 184 185 if (ret) 186 dev_err(&pdev->dev, "snd_soc_register_card() failed:%d\n", ret); 187 188 return ret; 189 } 190 191 static struct platform_driver smdk_audio_driver = { 192 .driver = { 193 .name = "smdk-audio-wm8994", 194 .of_match_table = of_match_ptr(samsung_wm8994_of_match), 195 .pm = &snd_soc_pm_ops, 196 }, 197 .probe = smdk_audio_probe, 198 }; 199 200 module_platform_driver(smdk_audio_driver); 201 202 MODULE_DESCRIPTION("ALSA SoC SMDK WM8994"); 203 MODULE_LICENSE("GPL"); 204 MODULE_ALIAS("platform:smdk-audio-wm8994"); 205