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
20 struct pcm030_audio_data {
21 struct snd_soc_card *card;
22 struct platform_device *codec_device;
23 };
24
25 SND_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
30 SND_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
35 static 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
48 static 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
55 static 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
111 static 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
119 static const struct of_device_id pcm030_audio_match[] = {
120 { .compatible = "phytec,pcm030-audio-fabric", },
121 {}
122 };
123 MODULE_DEVICE_TABLE(of, pcm030_audio_match);
124
125 static 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
134 module_platform_driver(pcm030_fabric_driver);
135
136
137 MODULE_AUTHOR("Jon Smirl <jonsmirl@gmail.com>");
138 MODULE_DESCRIPTION(DRV_NAME ": mpc5200 pcm030 fabric driver");
139 MODULE_LICENSE("GPL");
140
141
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