1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * Copyright (C) 2014 Marvell 4 * 5 * Thomas Petazzoni <thomas.petazzoni@free-electrons.com> 6 */ 7 8 #include <linux/module.h> 9 #include <linux/moduleparam.h> 10 #include <linux/interrupt.h> 11 #include <linux/platform_device.h> 12 #include <linux/slab.h> 13 #include <sound/soc.h> 14 #include <linux/of.h> 15 #include <linux/platform_data/asoc-kirkwood.h> 16 #include "../codecs/cs42l51.h" 17 18 static int a370db_hw_params(struct snd_pcm_substream *substream, 19 struct snd_pcm_hw_params *params) 20 { 21 struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); 22 struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0); 23 unsigned int freq; 24 25 switch (params_rate(params)) { 26 default: 27 case 44100: 28 freq = 11289600; 29 break; 30 case 48000: 31 freq = 12288000; 32 break; 33 case 96000: 34 freq = 24576000; 35 break; 36 } 37 38 return snd_soc_dai_set_sysclk(codec_dai, 0, freq, SND_SOC_CLOCK_IN); 39 } 40 41 static const struct snd_soc_ops a370db_ops = { 42 .hw_params = a370db_hw_params, 43 }; 44 45 static const struct snd_soc_dapm_widget a370db_dapm_widgets[] = { 46 SND_SOC_DAPM_HP("Out Jack", NULL), 47 SND_SOC_DAPM_LINE("In Jack", NULL), 48 }; 49 50 static const struct snd_soc_dapm_route a370db_route[] = { 51 { "Out Jack", NULL, "HPL" }, 52 { "Out Jack", NULL, "HPR" }, 53 { "AIN1L", NULL, "In Jack" }, 54 { "AIN1L", NULL, "In Jack" }, 55 }; 56 57 SND_SOC_DAILINK_DEFS(analog, 58 DAILINK_COMP_ARRAY(COMP_CPU("i2s")), 59 DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "cs42l51-hifi")), 60 DAILINK_COMP_ARRAY(COMP_EMPTY())); 61 62 SND_SOC_DAILINK_DEFS(spdif_out, 63 DAILINK_COMP_ARRAY(COMP_CPU("spdif")), 64 DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "dit-hifi")), 65 DAILINK_COMP_ARRAY(COMP_EMPTY())); 66 67 SND_SOC_DAILINK_DEFS(spdif_in, 68 DAILINK_COMP_ARRAY(COMP_CPU("spdif")), 69 DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "dir-hifi")), 70 DAILINK_COMP_ARRAY(COMP_EMPTY())); 71 72 static struct snd_soc_dai_link a370db_dai[] = { 73 { 74 .name = "CS42L51", 75 .stream_name = "analog", 76 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS, 77 .ops = &a370db_ops, 78 SND_SOC_DAILINK_REG(analog), 79 }, 80 { 81 .name = "S/PDIF out", 82 .stream_name = "spdif-out", 83 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS, 84 SND_SOC_DAILINK_REG(spdif_out), 85 }, 86 { 87 .name = "S/PDIF in", 88 .stream_name = "spdif-in", 89 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS, 90 SND_SOC_DAILINK_REG(spdif_in), 91 }, 92 }; 93 94 static struct snd_soc_card a370db = { 95 .name = "a370db", 96 .owner = THIS_MODULE, 97 .dai_link = a370db_dai, 98 .num_links = ARRAY_SIZE(a370db_dai), 99 .dapm_widgets = a370db_dapm_widgets, 100 .num_dapm_widgets = ARRAY_SIZE(a370db_dapm_widgets), 101 .dapm_routes = a370db_route, 102 .num_dapm_routes = ARRAY_SIZE(a370db_route), 103 }; 104 105 static int a370db_probe(struct platform_device *pdev) 106 { 107 struct snd_soc_card *card = &a370db; 108 109 card->dev = &pdev->dev; 110 111 a370db_dai[0].cpus->of_node = 112 of_parse_phandle(pdev->dev.of_node, 113 "marvell,audio-controller", 0); 114 a370db_dai[0].platforms->of_node = a370db_dai[0].cpus->of_node; 115 116 a370db_dai[0].codecs->of_node = 117 of_parse_phandle(pdev->dev.of_node, 118 "marvell,audio-codec", 0); 119 120 a370db_dai[1].cpus->of_node = a370db_dai[0].cpus->of_node; 121 a370db_dai[1].platforms->of_node = a370db_dai[0].cpus->of_node; 122 123 a370db_dai[1].codecs->of_node = 124 of_parse_phandle(pdev->dev.of_node, 125 "marvell,audio-codec", 1); 126 127 a370db_dai[2].cpus->of_node = a370db_dai[0].cpus->of_node; 128 a370db_dai[2].platforms->of_node = a370db_dai[0].cpus->of_node; 129 130 a370db_dai[2].codecs->of_node = 131 of_parse_phandle(pdev->dev.of_node, 132 "marvell,audio-codec", 2); 133 134 return devm_snd_soc_register_card(card->dev, card); 135 } 136 137 static const struct of_device_id a370db_dt_ids[] = { 138 { .compatible = "marvell,a370db-audio" }, 139 { }, 140 }; 141 MODULE_DEVICE_TABLE(of, a370db_dt_ids); 142 143 static struct platform_driver a370db_driver = { 144 .driver = { 145 .name = "a370db-audio", 146 .of_match_table = of_match_ptr(a370db_dt_ids), 147 }, 148 .probe = a370db_probe, 149 }; 150 151 module_platform_driver(a370db_driver); 152 153 MODULE_AUTHOR("Thomas Petazzoni <thomas.petazzoni@free-electrons.com>"); 154 MODULE_DESCRIPTION("ALSA SoC a370db audio client"); 155 MODULE_LICENSE("GPL"); 156 MODULE_ALIAS("platform:a370db-audio"); 157