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 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 .platform_name = "ux500-msp-i2s.1", 37 .codec_name = "ab8500-codec.0", 38 .init = mop500_ab8500_machine_init, 39 .ops = mop500_ab8500_ops, 40 }, 41 { 42 .name = "ab8500_1", 43 .stream_name = "ab8500_1", 44 .cpu_dai_name = "ux500-msp-i2s.3", 45 .codec_dai_name = "ab8500-codec-dai.1", 46 .platform_name = "ux500-msp-i2s.3", 47 .codec_name = "ab8500-codec.0", 48 .init = NULL, 49 .ops = mop500_ab8500_ops, 50 }, 51 }; 52 53 static struct snd_soc_card mop500_card = { 54 .name = "MOP500-card", 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 if (mop500_dai_links[i].cpu_of_node) 66 of_node_put((struct device_node *) 67 mop500_dai_links[i].cpu_of_node); 68 if (mop500_dai_links[i].codec_of_node) 69 of_node_put((struct device_node *) 70 mop500_dai_links[i].codec_of_node); 71 } 72 } 73 74 static int mop500_of_probe(struct platform_device *pdev, 75 struct device_node *np) 76 { 77 struct device_node *codec_np, *msp_np[2]; 78 int i; 79 80 msp_np[0] = of_parse_phandle(np, "stericsson,cpu-dai", 0); 81 msp_np[1] = of_parse_phandle(np, "stericsson,cpu-dai", 1); 82 codec_np = of_parse_phandle(np, "stericsson,audio-codec", 0); 83 84 if (!(msp_np[0] && msp_np[1] && codec_np)) { 85 dev_err(&pdev->dev, "Phandle missing or invalid\n"); 86 mop500_of_node_put(); 87 return -EINVAL; 88 } 89 90 for (i = 0; i < 2; i++) { 91 mop500_dai_links[i].cpu_of_node = msp_np[i]; 92 mop500_dai_links[i].cpu_dai_name = NULL; 93 mop500_dai_links[i].codec_of_node = codec_np; 94 mop500_dai_links[i].codec_name = NULL; 95 } 96 97 snd_soc_of_parse_card_name(&mop500_card, "stericsson,card-name"); 98 99 return 0; 100 } 101 102 static int mop500_probe(struct platform_device *pdev) 103 { 104 struct device_node *np = pdev->dev.of_node; 105 int ret; 106 107 dev_dbg(&pdev->dev, "%s: Enter.\n", __func__); 108 109 mop500_card.dev = &pdev->dev; 110 111 if (np) { 112 ret = mop500_of_probe(pdev, np); 113 if (ret) 114 return ret; 115 } 116 117 dev_dbg(&pdev->dev, "%s: Card %s: Set platform drvdata.\n", 118 __func__, mop500_card.name); 119 platform_set_drvdata(pdev, &mop500_card); 120 121 snd_soc_card_set_drvdata(&mop500_card, NULL); 122 123 dev_dbg(&pdev->dev, "%s: Card %s: num_links = %d\n", 124 __func__, mop500_card.name, mop500_card.num_links); 125 dev_dbg(&pdev->dev, "%s: Card %s: DAI-link 0: name = %s\n", 126 __func__, mop500_card.name, mop500_card.dai_link[0].name); 127 dev_dbg(&pdev->dev, "%s: Card %s: DAI-link 0: stream_name = %s\n", 128 __func__, mop500_card.name, 129 mop500_card.dai_link[0].stream_name); 130 131 ret = snd_soc_register_card(&mop500_card); 132 if (ret) 133 dev_err(&pdev->dev, 134 "Error: snd_soc_register_card failed (%d)!\n", ret); 135 136 return ret; 137 } 138 139 static int mop500_remove(struct platform_device *pdev) 140 { 141 struct snd_soc_card *mop500_card = platform_get_drvdata(pdev); 142 143 pr_debug("%s: Enter.\n", __func__); 144 145 snd_soc_unregister_card(mop500_card); 146 mop500_ab8500_remove(mop500_card); 147 mop500_of_node_put(); 148 149 return 0; 150 } 151 152 static const struct of_device_id snd_soc_mop500_match[] = { 153 { .compatible = "stericsson,snd-soc-mop500", }, 154 {}, 155 }; 156 157 static struct platform_driver snd_soc_mop500_driver = { 158 .driver = { 159 .owner = THIS_MODULE, 160 .name = "snd-soc-mop500", 161 .of_match_table = snd_soc_mop500_match, 162 }, 163 .probe = mop500_probe, 164 .remove = mop500_remove, 165 }; 166 167 module_platform_driver(snd_soc_mop500_driver); 168