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