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 * License terms: 9 */ 10 11 #include <asm/mach-types.h> 12 13 #include <linux/module.h> 14 #include <linux/io.h> 15 #include <linux/spi/spi.h> 16 #include <linux/of.h> 17 18 #include <sound/soc.h> 19 #include <sound/initval.h> 20 21 #include "ux500_pcm.h" 22 #include "ux500_msp_dai.h" 23 24 #include "mop500_ab8500.h" 25 26 /* Define the whole MOP500 soundcard, linking platform to the codec-drivers */ 27 SND_SOC_DAILINK_DEFS(link1, 28 DAILINK_COMP_ARRAY(COMP_CPU("ux500-msp-i2s.1")), 29 DAILINK_COMP_ARRAY(COMP_CODEC("ab8500-codec.0", "ab8500-codec-dai.0")), 30 DAILINK_COMP_ARRAY(COMP_PLATFORM("ux500-msp-i2s.1"))); 31 32 SND_SOC_DAILINK_DEFS(link2, 33 DAILINK_COMP_ARRAY(COMP_CPU("ux500-msp-i2s.3")), 34 DAILINK_COMP_ARRAY(COMP_CODEC("ab8500-codec.0", "ab8500-codec-dai.1")), 35 DAILINK_COMP_ARRAY(COMP_PLATFORM("ux500-msp-i2s.3"))); 36 37 static struct snd_soc_dai_link mop500_dai_links[] = { 38 { 39 .name = "ab8500_0", 40 .stream_name = "ab8500_0", 41 .init = mop500_ab8500_machine_init, 42 .ops = mop500_ab8500_ops, 43 SND_SOC_DAILINK_REG(link1), 44 }, 45 { 46 .name = "ab8500_1", 47 .stream_name = "ab8500_1", 48 .init = NULL, 49 .ops = mop500_ab8500_ops, 50 SND_SOC_DAILINK_REG(link2), 51 }, 52 }; 53 54 static struct snd_soc_card mop500_card = { 55 .name = "MOP500-card", 56 .owner = THIS_MODULE, 57 .probe = NULL, 58 .dai_link = mop500_dai_links, 59 .num_links = ARRAY_SIZE(mop500_dai_links), 60 }; 61 62 static void mop500_of_node_put(void) 63 { 64 int i; 65 66 for (i = 0; i < 2; i++) 67 of_node_put(mop500_dai_links[i].cpus->of_node); 68 69 /* Both links use the same codec, which is refcounted only once */ 70 of_node_put(mop500_dai_links[0].codecs->of_node); 71 } 72 73 static int mop500_of_probe(struct platform_device *pdev, 74 struct device_node *np) 75 { 76 struct device_node *codec_np, *msp_np[2]; 77 int i; 78 79 msp_np[0] = of_parse_phandle(np, "stericsson,cpu-dai", 0); 80 msp_np[1] = of_parse_phandle(np, "stericsson,cpu-dai", 1); 81 codec_np = of_parse_phandle(np, "stericsson,audio-codec", 0); 82 83 if (!(msp_np[0] && msp_np[1] && codec_np)) { 84 dev_err(&pdev->dev, "Phandle missing or invalid\n"); 85 for (i = 0; i < 2; i++) 86 of_node_put(msp_np[i]); 87 of_node_put(codec_np); 88 return -EINVAL; 89 } 90 91 for (i = 0; i < 2; i++) { 92 mop500_dai_links[i].cpus->of_node = msp_np[i]; 93 mop500_dai_links[i].cpus->dai_name = NULL; 94 mop500_dai_links[i].platforms->of_node = msp_np[i]; 95 mop500_dai_links[i].platforms->name = NULL; 96 mop500_dai_links[i].codecs->of_node = codec_np; 97 mop500_dai_links[i].codecs->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); 122 123 snd_soc_card_set_drvdata(&mop500_card, NULL); 124 125 dev_dbg(&pdev->dev, "%s: Card %s: num_links = %d\n", 126 __func__, mop500_card.name, mop500_card.num_links); 127 dev_dbg(&pdev->dev, "%s: Card %s: DAI-link 0: name = %s\n", 128 __func__, mop500_card.name, mop500_card.dai_link[0].name); 129 dev_dbg(&pdev->dev, "%s: Card %s: DAI-link 0: stream_name = %s\n", 130 __func__, mop500_card.name, 131 mop500_card.dai_link[0].stream_name); 132 133 ret = snd_soc_register_card(&mop500_card); 134 if (ret) 135 dev_err(&pdev->dev, 136 "Error: snd_soc_register_card failed (%d)!\n", ret); 137 138 return ret; 139 } 140 141 static int mop500_remove(struct platform_device *pdev) 142 { 143 struct snd_soc_card *mop500_card = platform_get_drvdata(pdev); 144 145 pr_debug("%s: Enter.\n", __func__); 146 147 snd_soc_unregister_card(mop500_card); 148 mop500_ab8500_remove(mop500_card); 149 mop500_of_node_put(); 150 151 return 0; 152 } 153 154 static const struct of_device_id snd_soc_mop500_match[] = { 155 { .compatible = "stericsson,snd-soc-mop500", }, 156 {}, 157 }; 158 MODULE_DEVICE_TABLE(of, snd_soc_mop500_match); 159 160 static struct platform_driver snd_soc_mop500_driver = { 161 .driver = { 162 .name = "snd-soc-mop500", 163 .of_match_table = snd_soc_mop500_match, 164 }, 165 .probe = mop500_probe, 166 .remove = mop500_remove, 167 }; 168 169 module_platform_driver(snd_soc_mop500_driver); 170 171 MODULE_LICENSE("GPL v2"); 172 MODULE_DESCRIPTION("ASoC MOP500 board driver"); 173 MODULE_AUTHOR("Ola Lilja"); 174