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 .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 .owner = THIS_MODULE, 56 .probe = NULL, 57 .dai_link = mop500_dai_links, 58 .num_links = ARRAY_SIZE(mop500_dai_links), 59 }; 60 61 static void mop500_of_node_put(void) 62 { 63 int i; 64 65 for (i = 0; i < 2; i++) { 66 if (mop500_dai_links[i].cpu_of_node) 67 of_node_put((struct device_node *) 68 mop500_dai_links[i].cpu_of_node); 69 if (mop500_dai_links[i].codec_of_node) 70 of_node_put((struct device_node *) 71 mop500_dai_links[i].codec_of_node); 72 } 73 } 74 75 static int mop500_of_probe(struct platform_device *pdev, 76 struct device_node *np) 77 { 78 struct device_node *codec_np, *msp_np[2]; 79 int i; 80 81 msp_np[0] = of_parse_phandle(np, "stericsson,cpu-dai", 0); 82 msp_np[1] = of_parse_phandle(np, "stericsson,cpu-dai", 1); 83 codec_np = of_parse_phandle(np, "stericsson,audio-codec", 0); 84 85 if (!(msp_np[0] && msp_np[1] && codec_np)) { 86 dev_err(&pdev->dev, "Phandle missing or invalid\n"); 87 mop500_of_node_put(); 88 return -EINVAL; 89 } 90 91 for (i = 0; i < 2; i++) { 92 mop500_dai_links[i].cpu_of_node = msp_np[i]; 93 mop500_dai_links[i].cpu_dai_name = NULL; 94 mop500_dai_links[i].platform_of_node = msp_np[i]; 95 mop500_dai_links[i].platform_name = NULL; 96 mop500_dai_links[i].codec_of_node = codec_np; 97 mop500_dai_links[i].codec_name = NULL; 98 } 99 100 snd_soc_of_parse_card_name(&mop500_card, "stericsson,card-name"); 101 102 return 0; 103 } 104 105 static int mop500_probe(struct platform_device *pdev) 106 { 107 struct device_node *np = pdev->dev.of_node; 108 int ret; 109 110 dev_dbg(&pdev->dev, "%s: Enter.\n", __func__); 111 112 mop500_card.dev = &pdev->dev; 113 114 if (np) { 115 ret = mop500_of_probe(pdev, np); 116 if (ret) 117 return ret; 118 } 119 120 dev_dbg(&pdev->dev, "%s: Card %s: Set platform drvdata.\n", 121 __func__, mop500_card.name); 122 platform_set_drvdata(pdev, &mop500_card); 123 124 snd_soc_card_set_drvdata(&mop500_card, NULL); 125 126 dev_dbg(&pdev->dev, "%s: Card %s: num_links = %d\n", 127 __func__, mop500_card.name, mop500_card.num_links); 128 dev_dbg(&pdev->dev, "%s: Card %s: DAI-link 0: name = %s\n", 129 __func__, mop500_card.name, mop500_card.dai_link[0].name); 130 dev_dbg(&pdev->dev, "%s: Card %s: DAI-link 0: stream_name = %s\n", 131 __func__, mop500_card.name, 132 mop500_card.dai_link[0].stream_name); 133 134 ret = snd_soc_register_card(&mop500_card); 135 if (ret) 136 dev_err(&pdev->dev, 137 "Error: snd_soc_register_card failed (%d)!\n", ret); 138 139 return ret; 140 } 141 142 static int mop500_remove(struct platform_device *pdev) 143 { 144 struct snd_soc_card *mop500_card = platform_get_drvdata(pdev); 145 146 pr_debug("%s: Enter.\n", __func__); 147 148 snd_soc_unregister_card(mop500_card); 149 mop500_ab8500_remove(mop500_card); 150 mop500_of_node_put(); 151 152 return 0; 153 } 154 155 static const struct of_device_id snd_soc_mop500_match[] = { 156 { .compatible = "stericsson,snd-soc-mop500", }, 157 {}, 158 }; 159 160 static struct platform_driver snd_soc_mop500_driver = { 161 .driver = { 162 .owner = THIS_MODULE, 163 .name = "snd-soc-mop500", 164 .of_match_table = snd_soc_mop500_match, 165 }, 166 .probe = mop500_probe, 167 .remove = mop500_remove, 168 }; 169 170 module_platform_driver(snd_soc_mop500_driver); 171