1 /* 2 * Copyright (C) 2014 Marvell 3 * 4 * Thomas Petazzoni <thomas.petazzoni@free-electrons.com> 5 * 6 * This program is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU General Public License as 8 * published by the Free Software Foundation; either version 2 of the 9 * License, or (at your option) any later version. 10 */ 11 12 #include <linux/module.h> 13 #include <linux/moduleparam.h> 14 #include <linux/interrupt.h> 15 #include <linux/platform_device.h> 16 #include <linux/slab.h> 17 #include <sound/soc.h> 18 #include <linux/of.h> 19 #include <linux/platform_data/asoc-kirkwood.h> 20 #include "../codecs/cs42l51.h" 21 22 static int a370db_hw_params(struct snd_pcm_substream *substream, 23 struct snd_pcm_hw_params *params) 24 { 25 struct snd_soc_pcm_runtime *rtd = substream->private_data; 26 struct snd_soc_dai *codec_dai = rtd->codec_dai; 27 unsigned int freq; 28 29 switch (params_rate(params)) { 30 default: 31 case 44100: 32 freq = 11289600; 33 break; 34 case 48000: 35 freq = 12288000; 36 break; 37 case 96000: 38 freq = 24576000; 39 break; 40 } 41 42 return snd_soc_dai_set_sysclk(codec_dai, 0, freq, SND_SOC_CLOCK_IN); 43 } 44 45 static struct snd_soc_ops a370db_ops = { 46 .hw_params = a370db_hw_params, 47 }; 48 49 static const struct snd_soc_dapm_widget a370db_dapm_widgets[] = { 50 SND_SOC_DAPM_HP("Out Jack", NULL), 51 SND_SOC_DAPM_LINE("In Jack", NULL), 52 }; 53 54 static const struct snd_soc_dapm_route a370db_route[] = { 55 { "Out Jack", NULL, "HPL" }, 56 { "Out Jack", NULL, "HPR" }, 57 { "AIN1L", NULL, "In Jack" }, 58 { "AIN1L", NULL, "In Jack" }, 59 }; 60 61 static struct snd_soc_dai_link a370db_dai[] = { 62 { 63 .name = "CS42L51", 64 .stream_name = "analog", 65 .cpu_dai_name = "i2s", 66 .codec_dai_name = "cs42l51-hifi", 67 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS, 68 .ops = &a370db_ops, 69 }, 70 { 71 .name = "S/PDIF out", 72 .stream_name = "spdif-out", 73 .cpu_dai_name = "spdif", 74 .codec_dai_name = "dit-hifi", 75 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS, 76 }, 77 { 78 .name = "S/PDIF in", 79 .stream_name = "spdif-in", 80 .cpu_dai_name = "spdif", 81 .codec_dai_name = "dir-hifi", 82 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS, 83 }, 84 }; 85 86 static struct snd_soc_card a370db = { 87 .name = "a370db", 88 .owner = THIS_MODULE, 89 .dai_link = a370db_dai, 90 .num_links = ARRAY_SIZE(a370db_dai), 91 .dapm_widgets = a370db_dapm_widgets, 92 .num_dapm_widgets = ARRAY_SIZE(a370db_dapm_widgets), 93 .dapm_routes = a370db_route, 94 .num_dapm_routes = ARRAY_SIZE(a370db_route), 95 }; 96 97 static int a370db_probe(struct platform_device *pdev) 98 { 99 struct snd_soc_card *card = &a370db; 100 101 card->dev = &pdev->dev; 102 103 a370db_dai[0].cpu_of_node = 104 of_parse_phandle(pdev->dev.of_node, 105 "marvell,audio-controller", 0); 106 a370db_dai[0].platform_of_node = a370db_dai[0].cpu_of_node; 107 108 a370db_dai[0].codec_of_node = 109 of_parse_phandle(pdev->dev.of_node, 110 "marvell,audio-codec", 0); 111 112 a370db_dai[1].cpu_of_node = a370db_dai[0].cpu_of_node; 113 a370db_dai[1].platform_of_node = a370db_dai[0].cpu_of_node; 114 115 a370db_dai[1].codec_of_node = 116 of_parse_phandle(pdev->dev.of_node, 117 "marvell,audio-codec", 1); 118 119 a370db_dai[2].cpu_of_node = a370db_dai[0].cpu_of_node; 120 a370db_dai[2].platform_of_node = a370db_dai[0].cpu_of_node; 121 122 a370db_dai[2].codec_of_node = 123 of_parse_phandle(pdev->dev.of_node, 124 "marvell,audio-codec", 2); 125 126 return devm_snd_soc_register_card(card->dev, card); 127 } 128 129 static const struct of_device_id a370db_dt_ids[] = { 130 { .compatible = "marvell,a370db-audio" }, 131 { }, 132 }; 133 134 static struct platform_driver a370db_driver = { 135 .driver = { 136 .name = "a370db-audio", 137 .of_match_table = of_match_ptr(a370db_dt_ids), 138 }, 139 .probe = a370db_probe, 140 }; 141 142 module_platform_driver(a370db_driver); 143 144 MODULE_AUTHOR("Thomas Petazzoni <thomas.petazzoni@free-electrons.com>"); 145 MODULE_DESCRIPTION("ALSA SoC a370db audio client"); 146 MODULE_LICENSE("GPL"); 147 MODULE_ALIAS("platform:a370db-audio"); 148