Merge tag 'fbdev-fixes-3.13' of git://git.kernel.org/pub/scm/linux/kernel/git/tomba...
[linux-drm-fsl-dcu.git] / sound / soc / fsl / pcm030-audio-fabric.c
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
25 struct pcm030_audio_data {
26         struct snd_soc_card *card;
27         struct platform_device *codec_device;
28 };
29
30 static 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
47 static 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
54 static 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
105 static 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
116 static struct of_device_id pcm030_audio_match[] = {
117         { .compatible = "phytec,pcm030-audio-fabric", },
118         {}
119 };
120 MODULE_DEVICE_TABLE(of, pcm030_audio_match);
121
122 static struct platform_driver pcm030_fabric_driver = {
123         .probe          = pcm030_fabric_probe,
124         .remove         = pcm030_fabric_remove,
125         .driver         = {
126                 .name   = DRV_NAME,
127                 .owner  = THIS_MODULE,
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