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_device.h>
13#include <linux/of_platform.h>
14
15#include <sound/soc.h>
16
17#include "mpc5200_dma.h"
18
19#define DRV_NAME "pcm030-audio-fabric"
20
21struct pcm030_audio_data {
22	struct snd_soc_card *card;
23	struct platform_device *codec_device;
24};
25
26SND_SOC_DAILINK_DEFS(analog,
27	DAILINK_COMP_ARRAY(COMP_CPU("mpc5200-psc-ac97.0")),
28	DAILINK_COMP_ARRAY(COMP_CODEC("wm9712-codec", "wm9712-hifi")),
29	DAILINK_COMP_ARRAY(COMP_EMPTY()));
30
31SND_SOC_DAILINK_DEFS(iec958,
32	DAILINK_COMP_ARRAY(COMP_CPU("mpc5200-psc-ac97.1")),
33	DAILINK_COMP_ARRAY(COMP_CODEC("wm9712-codec", "wm9712-aux")),
34	DAILINK_COMP_ARRAY(COMP_EMPTY()));
35
36static struct snd_soc_dai_link pcm030_fabric_dai[] = {
37{
38	.name = "AC97.0",
39	.stream_name = "AC97 Analog",
40	SND_SOC_DAILINK_REG(analog),
41},
42{
43	.name = "AC97.1",
44	.stream_name = "AC97 IEC958",
45	SND_SOC_DAILINK_REG(iec958),
46},
47};
48
49static struct snd_soc_card pcm030_card = {
50	.name = "pcm030",
51	.owner = THIS_MODULE,
52	.dai_link = pcm030_fabric_dai,
53	.num_links = ARRAY_SIZE(pcm030_fabric_dai),
54};
55
56static int pcm030_fabric_probe(struct platform_device *op)
57{
58	struct device_node *np = op->dev.of_node;
59	struct device_node *platform_np;
60	struct snd_soc_card *card = &pcm030_card;
61	struct pcm030_audio_data *pdata;
62	struct snd_soc_dai_link *dai_link;
63	int ret;
64	int i;
65
66	if (!of_machine_is_compatible("phytec,pcm030"))
67		return -ENODEV;
68
69	pdata = devm_kzalloc(&op->dev, sizeof(struct pcm030_audio_data),
70			     GFP_KERNEL);
71	if (!pdata)
72		return -ENOMEM;
73
74	card->dev = &op->dev;
75
76	pdata->card = card;
77
78	platform_np = of_parse_phandle(np, "asoc-platform", 0);
79	if (!platform_np) {
80		dev_err(&op->dev, "ac97 not registered\n");
81		return -ENODEV;
82	}
83
84	for_each_card_prelinks(card, i, dai_link)
85		dai_link->platforms->of_node = platform_np;
86
87	ret = request_module("snd-soc-wm9712");
88	if (ret)
89		dev_err(&op->dev, "request_module returned: %d\n", ret);
90
91	pdata->codec_device = platform_device_alloc("wm9712-codec", -1);
92	if (!pdata->codec_device)
93		dev_err(&op->dev, "platform_device_alloc() failed\n");
94
95	ret = platform_device_add(pdata->codec_device);
96	if (ret) {
97		dev_err(&op->dev, "platform_device_add() failed: %d\n", ret);
98		platform_device_put(pdata->codec_device);
99	}
100
101	ret = snd_soc_register_card(card);
102	if (ret) {
103		dev_err(&op->dev, "snd_soc_register_card() failed: %d\n", ret);
104		platform_device_unregister(pdata->codec_device);
105	}
106
107	platform_set_drvdata(op, pdata);
108	return ret;
109
110}
111
112static void pcm030_fabric_remove(struct platform_device *op)
113{
114	struct pcm030_audio_data *pdata = platform_get_drvdata(op);
115
116	snd_soc_unregister_card(pdata->card);
117	platform_device_unregister(pdata->codec_device);
118}
119
120static const struct of_device_id pcm030_audio_match[] = {
121	{ .compatible = "phytec,pcm030-audio-fabric", },
122	{}
123};
124MODULE_DEVICE_TABLE(of, pcm030_audio_match);
125
126static struct platform_driver pcm030_fabric_driver = {
127	.probe		= pcm030_fabric_probe,
128	.remove_new	= pcm030_fabric_remove,
129	.driver		= {
130		.name	= DRV_NAME,
131		.of_match_table    = pcm030_audio_match,
132	},
133};
134
135module_platform_driver(pcm030_fabric_driver);
136
137
138MODULE_AUTHOR("Jon Smirl <jonsmirl@gmail.com>");
139MODULE_DESCRIPTION(DRV_NAME ": mpc5200 pcm030 fabric driver");
140MODULE_LICENSE("GPL");
141
142