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 #define DRV_NAME "pcm030-audio-fabric"
17
18 struct pcm030_audio_data {
19 struct snd_soc_card *card;
20 struct platform_device *codec_device;
21 };
22
23 SND_SOC_DAILINK_DEFS(analog,
24 DAILINK_COMP_ARRAY(COMP_CPU("mpc5200-psc-ac97.0")),
25 DAILINK_COMP_ARRAY(COMP_CODEC("wm9712-codec", "wm9712-hifi")),
26 DAILINK_COMP_ARRAY(COMP_EMPTY()));
27
28 SND_SOC_DAILINK_DEFS(iec958,
29 DAILINK_COMP_ARRAY(COMP_CPU("mpc5200-psc-ac97.1")),
30 DAILINK_COMP_ARRAY(COMP_CODEC("wm9712-codec", "wm9712-aux")),
31 DAILINK_COMP_ARRAY(COMP_EMPTY()));
32
33 static struct snd_soc_dai_link pcm030_fabric_dai[] = {
34 {
35 .name = "AC97.0",
36 .stream_name = "AC97 Analog",
37 SND_SOC_DAILINK_REG(analog),
38 },
39 {
40 .name = "AC97.1",
41 .stream_name = "AC97 IEC958",
42 SND_SOC_DAILINK_REG(iec958),
43 },
44 };
45
46 static struct snd_soc_card pcm030_card = {
47 .name = "pcm030",
48 .owner = THIS_MODULE,
49 .dai_link = pcm030_fabric_dai,
50 .num_links = ARRAY_SIZE(pcm030_fabric_dai),
51 };
52
pcm030_fabric_probe(struct platform_device * op)53 static int pcm030_fabric_probe(struct platform_device *op)
54 {
55 struct device_node *np = op->dev.of_node;
56 struct device_node *platform_np;
57 struct snd_soc_card *card = &pcm030_card;
58 struct pcm030_audio_data *pdata;
59 struct snd_soc_dai_link *dai_link;
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_each_card_prelinks(card, i, dai_link)
82 dai_link->platforms->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 platform_device_put(pdata->codec_device);
96 }
97
98 ret = snd_soc_register_card(card);
99 if (ret) {
100 dev_err(&op->dev, "snd_soc_register_card() failed: %d\n", ret);
101 platform_device_unregister(pdata->codec_device);
102 }
103
104 platform_set_drvdata(op, pdata);
105 return ret;
106
107 }
108
pcm030_fabric_remove(struct platform_device * op)109 static void pcm030_fabric_remove(struct platform_device *op)
110 {
111 struct pcm030_audio_data *pdata = platform_get_drvdata(op);
112
113 snd_soc_unregister_card(pdata->card);
114 platform_device_unregister(pdata->codec_device);
115 }
116
117 static const struct of_device_id pcm030_audio_match[] = {
118 { .compatible = "phytec,pcm030-audio-fabric", },
119 {}
120 };
121 MODULE_DEVICE_TABLE(of, pcm030_audio_match);
122
123 static struct platform_driver pcm030_fabric_driver = {
124 .probe = pcm030_fabric_probe,
125 .remove = pcm030_fabric_remove,
126 .driver = {
127 .name = DRV_NAME,
128 .of_match_table = pcm030_audio_match,
129 },
130 };
131
132 module_platform_driver(pcm030_fabric_driver);
133
134
135 MODULE_AUTHOR("Jon Smirl <jonsmirl@gmail.com>");
136 MODULE_DESCRIPTION(DRV_NAME ": mpc5200 pcm030 fabric driver");
137 MODULE_LICENSE("GPL");
138
139