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1// SPDX-License-Identifier: GPL-2.02//3// Phytec pcm030 driver for the PSC of the Freescale MPC52xx4// configured as AC97 interface5//6// Copyright 2008 Jon Smirl, Digispeaker7// Author: Jon Smirl <jonsmirl@gmail.com>8 9#include <linux/init.h>10#include <linux/module.h>11#include <linux/device.h>12#include <linux/of.h>13 14#include <sound/soc.h>15 16#include "mpc5200_dma.h"17 18#define DRV_NAME "pcm030-audio-fabric"19 20struct pcm030_audio_data {21 struct snd_soc_card *card;22 struct platform_device *codec_device;23};24 25SND_SOC_DAILINK_DEFS(analog,26 DAILINK_COMP_ARRAY(COMP_CPU("mpc5200-psc-ac97.0")),27 DAILINK_COMP_ARRAY(COMP_CODEC("wm9712-codec", "wm9712-hifi")),28 DAILINK_COMP_ARRAY(COMP_EMPTY()));29 30SND_SOC_DAILINK_DEFS(iec958,31 DAILINK_COMP_ARRAY(COMP_CPU("mpc5200-psc-ac97.1")),32 DAILINK_COMP_ARRAY(COMP_CODEC("wm9712-codec", "wm9712-aux")),33 DAILINK_COMP_ARRAY(COMP_EMPTY()));34 35static struct snd_soc_dai_link pcm030_fabric_dai[] = {36{37 .name = "AC97.0",38 .stream_name = "AC97 Analog",39 SND_SOC_DAILINK_REG(analog),40},41{42 .name = "AC97.1",43 .stream_name = "AC97 IEC958",44 SND_SOC_DAILINK_REG(iec958),45},46};47 48static struct snd_soc_card pcm030_card = {49 .name = "pcm030",50 .owner = THIS_MODULE,51 .dai_link = pcm030_fabric_dai,52 .num_links = ARRAY_SIZE(pcm030_fabric_dai),53};54 55static int pcm030_fabric_probe(struct platform_device *op)56{57 struct device_node *np = op->dev.of_node;58 struct device_node *platform_np;59 struct snd_soc_card *card = &pcm030_card;60 struct pcm030_audio_data *pdata;61 struct snd_soc_dai_link *dai_link;62 int ret;63 int i;64 65 if (!of_machine_is_compatible("phytec,pcm030"))66 return -ENODEV;67 68 pdata = devm_kzalloc(&op->dev, sizeof(struct pcm030_audio_data),69 GFP_KERNEL);70 if (!pdata)71 return -ENOMEM;72 73 card->dev = &op->dev;74 75 pdata->card = card;76 77 platform_np = of_parse_phandle(np, "asoc-platform", 0);78 if (!platform_np) {79 dev_err(&op->dev, "ac97 not registered\n");80 return -ENODEV;81 }82 83 for_each_card_prelinks(card, i, dai_link)84 dai_link->platforms->of_node = platform_np;85 86 ret = request_module("snd-soc-wm9712");87 if (ret)88 dev_err(&op->dev, "request_module returned: %d\n", ret);89 90 pdata->codec_device = platform_device_alloc("wm9712-codec", -1);91 if (!pdata->codec_device)92 dev_err(&op->dev, "platform_device_alloc() failed\n");93 94 ret = platform_device_add(pdata->codec_device);95 if (ret) {96 dev_err(&op->dev, "platform_device_add() failed: %d\n", ret);97 platform_device_put(pdata->codec_device);98 }99 100 ret = snd_soc_register_card(card);101 if (ret) {102 dev_err(&op->dev, "snd_soc_register_card() failed: %d\n", ret);103 platform_device_unregister(pdata->codec_device);104 }105 106 platform_set_drvdata(op, pdata);107 return ret;108 109}110 111static void pcm030_fabric_remove(struct platform_device *op)112{113 struct pcm030_audio_data *pdata = platform_get_drvdata(op);114 115 snd_soc_unregister_card(pdata->card);116 platform_device_unregister(pdata->codec_device);117}118 119static const struct of_device_id pcm030_audio_match[] = {120 { .compatible = "phytec,pcm030-audio-fabric", },121 {}122};123MODULE_DEVICE_TABLE(of, pcm030_audio_match);124 125static struct platform_driver pcm030_fabric_driver = {126 .probe = pcm030_fabric_probe,127 .remove = pcm030_fabric_remove,128 .driver = {129 .name = DRV_NAME,130 .of_match_table = pcm030_audio_match,131 },132};133 134module_platform_driver(pcm030_fabric_driver);135 136 137MODULE_AUTHOR("Jon Smirl <jonsmirl@gmail.com>");138MODULE_DESCRIPTION(DRV_NAME ": mpc5200 pcm030 fabric driver");139MODULE_LICENSE("GPL");140 141