1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Copyright (C) ST-Ericsson SA 2012 4 * 5 * Author: Ola Lilja (ola.o.lilja@stericsson.com) 6 * for ST-Ericsson. 7 */ 8 9 #include <asm/mach-types.h> 10 11 #include <linux/module.h> 12 #include <linux/io.h> 13 #include <linux/spi/spi.h> 14 #include <linux/of.h> 15 16 #include <sound/soc.h> 17 #include <sound/initval.h> 18 19 #include "ux500_pcm.h" 20 #include "ux500_msp_dai.h" 21 22 #include "mop500_ab8500.h" 23 24 /* Define the whole MOP500 soundcard, linking platform to the codec-drivers */ 25 SND_SOC_DAILINK_DEFS(link1, 26 DAILINK_COMP_ARRAY(COMP_CPU("ux500-msp-i2s.1")), 27 DAILINK_COMP_ARRAY(COMP_CODEC("ab8500-codec.0", "ab8500-codec-dai.0")), 28 DAILINK_COMP_ARRAY(COMP_PLATFORM("ux500-msp-i2s.1"))); 29 30 SND_SOC_DAILINK_DEFS(link2, 31 DAILINK_COMP_ARRAY(COMP_CPU("ux500-msp-i2s.3")), 32 DAILINK_COMP_ARRAY(COMP_CODEC("ab8500-codec.0", "ab8500-codec-dai.1")), 33 DAILINK_COMP_ARRAY(COMP_PLATFORM("ux500-msp-i2s.3"))); 34 35 static struct snd_soc_dai_link mop500_dai_links[] = { 36 { 37 .name = "ab8500_0", 38 .stream_name = "ab8500_0", 39 .init = mop500_ab8500_machine_init, 40 .ops = mop500_ab8500_ops, 41 SND_SOC_DAILINK_REG(link1), 42 }, 43 { 44 .name = "ab8500_1", 45 .stream_name = "ab8500_1", 46 .init = NULL, 47 .ops = mop500_ab8500_ops, 48 SND_SOC_DAILINK_REG(link2), 49 }, 50 }; 51 52 static struct snd_soc_card mop500_card = { 53 .name = "MOP500-card", 54 .owner = THIS_MODULE, 55 .probe = NULL, 56 .dai_link = mop500_dai_links, 57 .num_links = ARRAY_SIZE(mop500_dai_links), 58 }; 59 60 static void mop500_of_node_put(void) 61 { 62 int i; 63 64 for (i = 0; i < 2; i++) 65 of_node_put(mop500_dai_links[i].cpus->of_node); 66 67 /* Both links use the same codec, which is refcounted only once */ 68 of_node_put(mop500_dai_links[0].codecs->of_node); 69 } 70 71 static int mop500_of_probe(struct platform_device *pdev, 72 struct device_node *np) 73 { 74 struct device_node *codec_np, *msp_np[2]; 75 int i; 76 77 msp_np[0] = of_parse_phandle(np, "stericsson,cpu-dai", 0); 78 msp_np[1] = of_parse_phandle(np, "stericsson,cpu-dai", 1); 79 codec_np = of_parse_phandle(np, "stericsson,audio-codec", 0); 80 81 if (!(msp_np[0] && msp_np[1] && codec_np)) { 82 dev_err(&pdev->dev, "Phandle missing or invalid\n"); 83 for (i = 0; i < 2; i++) 84 of_node_put(msp_np[i]); 85 of_node_put(codec_np); 86 return -EINVAL; 87 } 88 89 for (i = 0; i < 2; i++) { 90 mop500_dai_links[i].cpus->of_node = msp_np[i]; 91 mop500_dai_links[i].cpus->dai_name = NULL; 92 mop500_dai_links[i].platforms->of_node = msp_np[i]; 93 mop500_dai_links[i].platforms->name = NULL; 94 mop500_dai_links[i].codecs->of_node = codec_np; 95 mop500_dai_links[i].codecs->name = NULL; 96 } 97 98 snd_soc_of_parse_card_name(&mop500_card, "stericsson,card-name"); 99 100 return 0; 101 } 102 103 static int mop500_probe(struct platform_device *pdev) 104 { 105 struct device_node *np = pdev->dev.of_node; 106 int ret; 107 108 dev_dbg(&pdev->dev, "%s: Enter.\n", __func__); 109 110 mop500_card.dev = &pdev->dev; 111 112 ret = mop500_of_probe(pdev, np); 113 if (ret) 114 return ret; 115 116 dev_dbg(&pdev->dev, "%s: Card %s: Set platform drvdata.\n", 117 __func__, mop500_card.name); 118 119 snd_soc_card_set_drvdata(&mop500_card, NULL); 120 121 dev_dbg(&pdev->dev, "%s: Card %s: num_links = %d\n", 122 __func__, mop500_card.name, mop500_card.num_links); 123 dev_dbg(&pdev->dev, "%s: Card %s: DAI-link 0: name = %s\n", 124 __func__, mop500_card.name, mop500_card.dai_link[0].name); 125 dev_dbg(&pdev->dev, "%s: Card %s: DAI-link 0: stream_name = %s\n", 126 __func__, mop500_card.name, 127 mop500_card.dai_link[0].stream_name); 128 129 ret = snd_soc_register_card(&mop500_card); 130 if (ret) 131 dev_err(&pdev->dev, 132 "Error: snd_soc_register_card failed (%d)!\n", ret); 133 134 return ret; 135 } 136 137 static int mop500_remove(struct platform_device *pdev) 138 { 139 struct snd_soc_card *card = platform_get_drvdata(pdev); 140 141 pr_debug("%s: Enter.\n", __func__); 142 143 snd_soc_unregister_card(card); 144 mop500_ab8500_remove(card); 145 mop500_of_node_put(); 146 147 return 0; 148 } 149 150 static const struct of_device_id snd_soc_mop500_match[] = { 151 { .compatible = "stericsson,snd-soc-mop500", }, 152 {}, 153 }; 154 MODULE_DEVICE_TABLE(of, snd_soc_mop500_match); 155 156 static struct platform_driver snd_soc_mop500_driver = { 157 .driver = { 158 .name = "snd-soc-mop500", 159 .of_match_table = snd_soc_mop500_match, 160 }, 161 .probe = mop500_probe, 162 .remove = mop500_remove, 163 }; 164 165 module_platform_driver(snd_soc_mop500_driver); 166 167 MODULE_LICENSE("GPL v2"); 168 MODULE_DESCRIPTION("ASoC MOP500 board driver"); 169 MODULE_AUTHOR("Ola Lilja"); 170