1/*
2 * Phytec pcm030 driver for the PSC of the Freescale MPC52xx
3 * configured as AC97 interface
4 *
5 * Copyright 2008 Jon Smirl, Digispeaker
6 * Author: Jon Smirl <jonsmirl@gmail.com>
7 *
8 * This file is licensed under the terms of the GNU General Public License
9 * version 2. This program is licensed "as is" without any warranty of any
10 * kind, whether express or implied.
11 */
12
13#include <linux/init.h>
14#include <linux/module.h>
15#include <linux/device.h>
16#include <linux/of_device.h>
17#include <linux/of_platform.h>
18
19#include <sound/soc.h>
20
21#include "mpc5200_dma.h"
22
23#define DRV_NAME "pcm030-audio-fabric"
24
25struct pcm030_audio_data {
26	struct snd_soc_card *card;
27	struct platform_device *codec_device;
28};
29
30static struct snd_soc_dai_link pcm030_fabric_dai[] = {
31{
32	.name = "AC97.0",
33	.stream_name = "AC97 Analog",
34	.codec_dai_name = "wm9712-hifi",
35	.cpu_dai_name = "mpc5200-psc-ac97.0",
36	.codec_name = "wm9712-codec",
37},
38{
39	.name = "AC97.1",
40	.stream_name = "AC97 IEC958",
41	.codec_dai_name = "wm9712-aux",
42	.cpu_dai_name = "mpc5200-psc-ac97.1",
43	.codec_name = "wm9712-codec",
44},
45};
46
47static struct snd_soc_card pcm030_card = {
48	.name = "pcm030",
49	.owner = THIS_MODULE,
50	.dai_link = pcm030_fabric_dai,
51	.num_links = ARRAY_SIZE(pcm030_fabric_dai),
52};
53
54static int pcm030_fabric_probe(struct platform_device *op)
55{
56	struct device_node *np = op->dev.of_node;
57	struct device_node *platform_np;
58	struct snd_soc_card *card = &pcm030_card;
59	struct pcm030_audio_data *pdata;
60	int ret;
61	int i;
62
63	if (!of_machine_is_compatible("phytec,pcm030"))
64		return -ENODEV;
65
66	pdata = devm_kzalloc(&op->dev, sizeof(struct pcm030_audio_data),
67			     GFP_KERNEL);
68	if (!pdata)
69		return -ENOMEM;
70
71	card->dev = &op->dev;
72
73	pdata->card = card;
74
75	platform_np = of_parse_phandle(np, "asoc-platform", 0);
76	if (!platform_np) {
77		dev_err(&op->dev, "ac97 not registered\n");
78		return -ENODEV;
79	}
80
81	for (i = 0; i < card->num_links; i++)
82		card->dai_link[i].platform_of_node = platform_np;
83
84	ret = request_module("snd-soc-wm9712");
85	if (ret)
86		dev_err(&op->dev, "request_module returned: %d\n", ret);
87
88	pdata->codec_device = platform_device_alloc("wm9712-codec", -1);
89	if (!pdata->codec_device)
90		dev_err(&op->dev, "platform_device_alloc() failed\n");
91
92	ret = platform_device_add(pdata->codec_device);
93	if (ret)
94		dev_err(&op->dev, "platform_device_add() failed: %d\n", ret);
95
96	ret = snd_soc_register_card(card);
97	if (ret)
98		dev_err(&op->dev, "snd_soc_register_card() failed: %d\n", ret);
99
100	platform_set_drvdata(op, pdata);
101
102	return ret;
103}
104
105static int pcm030_fabric_remove(struct platform_device *op)
106{
107	struct pcm030_audio_data *pdata = platform_get_drvdata(op);
108	int ret;
109
110	ret = snd_soc_unregister_card(pdata->card);
111	platform_device_unregister(pdata->codec_device);
112
113	return ret;
114}
115
116static const struct of_device_id pcm030_audio_match[] = {
117	{ .compatible = "phytec,pcm030-audio-fabric", },
118	{}
119};
120MODULE_DEVICE_TABLE(of, pcm030_audio_match);
121
122static struct platform_driver pcm030_fabric_driver = {
123	.probe		= pcm030_fabric_probe,
124	.remove		= pcm030_fabric_remove,
125	.driver		= {
126		.name	= DRV_NAME,
127		.of_match_table    = pcm030_audio_match,
128	},
129};
130
131module_platform_driver(pcm030_fabric_driver);
132
133
134MODULE_AUTHOR("Jon Smirl <jonsmirl@gmail.com>");
135MODULE_DESCRIPTION(DRV_NAME ": mpc5200 pcm030 fabric driver");
136MODULE_LICENSE("GPL");
137
138