soc/fsl/pcm030-audio-fabric.c

0001 // SPDX-License-Identifier: GPL-2.0
0002 //
0003 // Phytec pcm030 driver for the PSC of the Freescale MPC52xx
0004 // configured as AC97 interface
0005 //
0006 // Copyright 2008 Jon Smirl, Digispeaker
0007 // Author: Jon Smirl <jonsmirl@gmail.com>
0008
0009 #include <linux/init.h>
0010 #include <linux/module.h>
0011 #include <linux/device.h>
0012 #include <linux/of_device.h>
0013 #include <linux/of_platform.h>
0014
0015 #include <sound/soc.h>
0016
0017 #include "mpc5200_dma.h"
0018
0019 #define DRV_NAME "pcm030-audio-fabric"
0020
0021 struct pcm030_audio_data {
0022     struct snd_soc_card *card;
0023     struct platform_device *codec_device;
0024 };
0025
0026 SND_SOC_DAILINK_DEFS(analog,
0027     DAILINK_COMP_ARRAY(COMP_CPU("mpc5200-psc-ac97.0")),
0028     DAILINK_COMP_ARRAY(COMP_CODEC("wm9712-codec", "wm9712-hifi")),
0029     DAILINK_COMP_ARRAY(COMP_EMPTY()));
0030
0031 SND_SOC_DAILINK_DEFS(iec958,
0032     DAILINK_COMP_ARRAY(COMP_CPU("mpc5200-psc-ac97.1")),
0033     DAILINK_COMP_ARRAY(COMP_CODEC("wm9712-codec", "wm9712-aux")),
0034     DAILINK_COMP_ARRAY(COMP_EMPTY()));
0035
0036 static struct snd_soc_dai_link pcm030_fabric_dai[] = {
0037 {
0038     .name = "AC97.0",
0039     .stream_name = "AC97 Analog",
0040     SND_SOC_DAILINK_REG(analog),
0041 },
0042 {
0043     .name = "AC97.1",
0044     .stream_name = "AC97 IEC958",
0045     SND_SOC_DAILINK_REG(iec958),
0046 },
0047 };
0048
0049 static struct snd_soc_card pcm030_card = {
0050     .name = "pcm030",
0051     .owner = THIS_MODULE,
0052     .dai_link = pcm030_fabric_dai,
0053     .num_links = ARRAY_SIZE(pcm030_fabric_dai),
0054 };
0055
0056 static int pcm030_fabric_probe(struct platform_device *op)
0057 {
0058     struct device_node *np = op->dev.of_node;
0059     struct device_node *platform_np;
0060     struct snd_soc_card *card = &pcm030_card;
0061     struct pcm030_audio_data *pdata;
0062     struct snd_soc_dai_link *dai_link;
0063     int ret;
0064     int i;
0065
0066     if (!of_machine_is_compatible("phytec,pcm030"))
0067         return -ENODEV;
0068
0069     pdata = devm_kzalloc(&op->dev, sizeof(struct pcm030_audio_data),
0070                  GFP_KERNEL);
0071     if (!pdata)
0072         return -ENOMEM;
0073
0074     card->dev = &op->dev;
0075
0076     pdata->card = card;
0077
0078     platform_np = of_parse_phandle(np, "asoc-platform", 0);
0079     if (!platform_np) {
0080         dev_err(&op->dev, "ac97 not registered\n");
0081         return -ENODEV;
0082     }
0083
0084     for_each_card_prelinks(card, i, dai_link)
0085         dai_link->platforms->of_node = platform_np;
0086
0087     ret = request_module("snd-soc-wm9712");
0088     if (ret)
0089         dev_err(&op->dev, "request_module returned: %d\n", ret);
0090
0091     pdata->codec_device = platform_device_alloc("wm9712-codec", -1);
0092     if (!pdata->codec_device)
0093         dev_err(&op->dev, "platform_device_alloc() failed\n");
0094
0095     ret = platform_device_add(pdata->codec_device);
0096     if (ret) {
0097         dev_err(&op->dev, "platform_device_add() failed: %d\n", ret);
0098         platform_device_put(pdata->codec_device);
0099     }
0100
0101     ret = snd_soc_register_card(card);
0102     if (ret) {
0103         dev_err(&op->dev, "snd_soc_register_card() failed: %d\n", ret);
0104         platform_device_unregister(pdata->codec_device);
0105     }
0106
0107     platform_set_drvdata(op, pdata);
0108     return ret;
0109
0110 }
0111
0112 static int pcm030_fabric_remove(struct platform_device *op)
0113 {
0114     struct pcm030_audio_data *pdata = platform_get_drvdata(op);
0115
0116     snd_soc_unregister_card(pdata->card);
0117     platform_device_unregister(pdata->codec_device);
0118
0119     return 0;
0120 }
0121
0122 static const struct of_device_id pcm030_audio_match[] = {
0123     { .compatible = "phytec,pcm030-audio-fabric", },
0124     {}
0125 };
0126 MODULE_DEVICE_TABLE(of, pcm030_audio_match);
0127
0128 static struct platform_driver pcm030_fabric_driver = {
0129     .probe      = pcm030_fabric_probe,
0130     .remove     = pcm030_fabric_remove,
0131     .driver     = {
0132         .name   = DRV_NAME,
0133         .of_match_table    = pcm030_audio_match,
0134     },
0135 };
0136
0137 module_platform_driver(pcm030_fabric_driver);
0138
0139
0140 MODULE_AUTHOR("Jon Smirl <jonsmirl@gmail.com>");
0141 MODULE_DESCRIPTION(DRV_NAME ": mpc5200 pcm030 fabric driver");
0142 MODULE_LICENSE("GPL");
0143