1// SPDX-License-Identifier: GPL-2.0
2//
3// Phytec pcm030 driver for the PSC of the Freescale MPC52xx
4// configured as AC97 interface
5//
6// Copyright 2008 Jon Smirl, Digispeaker
7// 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_new	= 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