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 #include <linux/of_device.h> 15 16 /* 17 * Default CFG switch settings to use this driver: 18 * SMDKV310: CFG5-1000, CFG7-111111 19 */ 20 21 /* 22 * Configure audio route as :- 23 * $ amixer sset 'DAC1' on,on 24 * $ amixer sset 'Right Headphone Mux' 'DAC' 25 * $ amixer sset 'Left Headphone Mux' 'DAC' 26 * $ amixer sset 'DAC1R Mixer AIF1.1' on 27 * $ amixer sset 'DAC1L Mixer AIF1.1' on 28 * $ amixer sset 'IN2L' on 29 * $ amixer sset 'IN2L PGA IN2LN' on 30 * $ amixer sset 'MIXINL IN2L' on 31 * $ amixer sset 'AIF1ADC1L Mixer ADC/DMIC' on 32 * $ amixer sset 'IN2R' on 33 * $ amixer sset 'IN2R PGA IN2RN' on 34 * $ amixer sset 'MIXINR IN2R' on 35 * $ amixer sset 'AIF1ADC1R Mixer ADC/DMIC' on 36 */ 37 38 /* SMDK has a 16.934MHZ crystal attached to WM8994 */ 39 #define SMDK_WM8994_FREQ 16934000 40 41 struct smdk_wm8994_data { 42 int mclk1_rate; 43 }; 44 45 /* Default SMDKs */ 46 static struct smdk_wm8994_data smdk_board_data = { 47 .mclk1_rate = SMDK_WM8994_FREQ, 48 }; 49 50 static int smdk_hw_params(struct snd_pcm_substream *substream, 51 struct snd_pcm_hw_params *params) 52 { 53 struct snd_soc_pcm_runtime *rtd = substream->private_data; 54 struct snd_soc_dai *codec_dai = rtd->codec_dai; 55 unsigned int pll_out; 56 int ret; 57 58 /* AIF1CLK should be >=3MHz for optimal performance */ 59 if (params_format(params) == SNDRV_PCM_FORMAT_S24_LE) 60 pll_out = params_rate(params) * 384; 61 else if (params_rate(params) == 8000 || params_rate(params) == 11025) 62 pll_out = params_rate(params) * 512; 63 else 64 pll_out = params_rate(params) * 256; 65 66 ret = snd_soc_dai_set_pll(codec_dai, WM8994_FLL1, WM8994_FLL_SRC_MCLK1, 67 SMDK_WM8994_FREQ, pll_out); 68 if (ret < 0) 69 return ret; 70 71 ret = snd_soc_dai_set_sysclk(codec_dai, WM8994_SYSCLK_FLL1, 72 pll_out, SND_SOC_CLOCK_IN); 73 if (ret < 0) 74 return ret; 75 76 return 0; 77 } 78 79 /* 80 * SMDK WM8994 DAI operations. 81 */ 82 static struct snd_soc_ops smdk_ops = { 83 .hw_params = smdk_hw_params, 84 }; 85 86 static int smdk_wm8994_init_paiftx(struct snd_soc_pcm_runtime *rtd) 87 { 88 struct snd_soc_codec *codec = rtd->codec; 89 struct snd_soc_dapm_context *dapm = &codec->dapm; 90 91 /* HeadPhone */ 92 snd_soc_dapm_enable_pin(dapm, "HPOUT1R"); 93 snd_soc_dapm_enable_pin(dapm, "HPOUT1L"); 94 95 /* MicIn */ 96 snd_soc_dapm_enable_pin(dapm, "IN1LN"); 97 snd_soc_dapm_enable_pin(dapm, "IN1RN"); 98 99 /* LineIn */ 100 snd_soc_dapm_enable_pin(dapm, "IN2LN"); 101 snd_soc_dapm_enable_pin(dapm, "IN2RN"); 102 103 /* Other pins NC */ 104 snd_soc_dapm_nc_pin(dapm, "HPOUT2P"); 105 snd_soc_dapm_nc_pin(dapm, "HPOUT2N"); 106 snd_soc_dapm_nc_pin(dapm, "SPKOUTLN"); 107 snd_soc_dapm_nc_pin(dapm, "SPKOUTLP"); 108 snd_soc_dapm_nc_pin(dapm, "SPKOUTRP"); 109 snd_soc_dapm_nc_pin(dapm, "SPKOUTRN"); 110 snd_soc_dapm_nc_pin(dapm, "LINEOUT1N"); 111 snd_soc_dapm_nc_pin(dapm, "LINEOUT1P"); 112 snd_soc_dapm_nc_pin(dapm, "LINEOUT2N"); 113 snd_soc_dapm_nc_pin(dapm, "LINEOUT2P"); 114 snd_soc_dapm_nc_pin(dapm, "IN1LP"); 115 snd_soc_dapm_nc_pin(dapm, "IN2LP:VXRN"); 116 snd_soc_dapm_nc_pin(dapm, "IN1RP"); 117 snd_soc_dapm_nc_pin(dapm, "IN2RP:VXRP"); 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-i2s.0", 129 .codec_name = "wm8994-codec", 130 .init = smdk_wm8994_init_paiftx, 131 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | 132 SND_SOC_DAIFMT_CBM_CFM, 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-sec", 138 .codec_dai_name = "wm8994-aif1", 139 .platform_name = "samsung-i2s-sec", 140 .codec_name = "wm8994-codec", 141 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | 142 SND_SOC_DAIFMT_CBM_CFM, 143 .ops = &smdk_ops, 144 }, 145 }; 146 147 static struct snd_soc_card smdk = { 148 .name = "SMDK-I2S", 149 .owner = THIS_MODULE, 150 .dai_link = smdk_dai, 151 .num_links = ARRAY_SIZE(smdk_dai), 152 }; 153 154 #ifdef CONFIG_OF 155 static const struct of_device_id samsung_wm8994_of_match[] = { 156 { .compatible = "samsung,smdk-wm8994", .data = &smdk_board_data }, 157 {}, 158 }; 159 MODULE_DEVICE_TABLE(of, samsung_wm8994_of_match); 160 #endif /* CONFIG_OF */ 161 162 static int smdk_audio_probe(struct platform_device *pdev) 163 { 164 int ret; 165 struct device_node *np = pdev->dev.of_node; 166 struct snd_soc_card *card = &smdk; 167 struct smdk_wm8994_data *board; 168 const struct of_device_id *id; 169 170 card->dev = &pdev->dev; 171 172 board = devm_kzalloc(&pdev->dev, sizeof(*board), GFP_KERNEL); 173 if (!board) 174 return -ENOMEM; 175 176 if (np) { 177 smdk_dai[0].cpu_dai_name = NULL; 178 smdk_dai[0].cpu_of_node = of_parse_phandle(np, 179 "samsung,i2s-controller", 0); 180 if (!smdk_dai[0].cpu_of_node) { 181 dev_err(&pdev->dev, 182 "Property 'samsung,i2s-controller' missing or invalid\n"); 183 ret = -EINVAL; 184 } 185 186 smdk_dai[0].platform_name = NULL; 187 smdk_dai[0].platform_of_node = smdk_dai[0].cpu_of_node; 188 } 189 190 id = of_match_device(samsung_wm8994_of_match, &pdev->dev); 191 if (id) 192 *board = *((struct smdk_wm8994_data *)id->data); 193 194 platform_set_drvdata(pdev, board); 195 196 ret = snd_soc_register_card(card); 197 198 if (ret) 199 dev_err(&pdev->dev, "snd_soc_register_card() failed:%d\n", ret); 200 201 return ret; 202 } 203 204 static int smdk_audio_remove(struct platform_device *pdev) 205 { 206 struct snd_soc_card *card = platform_get_drvdata(pdev); 207 208 snd_soc_unregister_card(card); 209 210 return 0; 211 } 212 213 static struct platform_driver smdk_audio_driver = { 214 .driver = { 215 .name = "smdk-audio-wm8894", 216 .owner = THIS_MODULE, 217 .of_match_table = of_match_ptr(samsung_wm8994_of_match), 218 }, 219 .probe = smdk_audio_probe, 220 .remove = smdk_audio_remove, 221 }; 222 223 module_platform_driver(smdk_audio_driver); 224 225 MODULE_DESCRIPTION("ALSA SoC SMDK WM8994"); 226 MODULE_LICENSE("GPL"); 227 MODULE_ALIAS("platform:smdk-audio-wm8994"); 228