1 /*
2  * Efika 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/interrupt.h>
16 #include <linux/device.h>
17 #include <linux/delay.h>
18 #include <linux/of_device.h>
19 #include <linux/of_platform.h>
20 #include <linux/dma-mapping.h>
21 
22 #include <sound/core.h>
23 #include <sound/pcm.h>
24 #include <sound/pcm_params.h>
25 #include <sound/initval.h>
26 #include <sound/soc.h>
27 
28 #include "mpc5200_dma.h"
29 
30 #define DRV_NAME "efika-audio-fabric"
31 
32 SND_SOC_DAILINK_DEFS(analog,
33 	DAILINK_COMP_ARRAY(COMP_CPU("mpc5200-psc-ac97.0")),
34 	DAILINK_COMP_ARRAY(COMP_CODEC("stac9766-codec",
35 				      "stac9766-hifi-analog")),
36 	DAILINK_COMP_ARRAY(COMP_PLATFORM("mpc5200-pcm-audio")));
37 
38 SND_SOC_DAILINK_DEFS(iec958,
39 	DAILINK_COMP_ARRAY(COMP_CPU("mpc5200-psc-ac97.1")),
40 	DAILINK_COMP_ARRAY(COMP_CODEC("stac9766-codec",
41 				      "stac9766-hifi-IEC958")),
42 	DAILINK_COMP_ARRAY(COMP_PLATFORM("mpc5200-pcm-audio")));
43 
44 static struct snd_soc_dai_link efika_fabric_dai[] = {
45 {
46 	.name = "AC97",
47 	.stream_name = "AC97 Analog",
48 	SND_SOC_DAILINK_REG(analog),
49 },
50 {
51 	.name = "AC97",
52 	.stream_name = "AC97 IEC958",
53 	SND_SOC_DAILINK_REG(iec958),
54 },
55 };
56 
57 static struct snd_soc_card card = {
58 	.name = "Efika",
59 	.owner = THIS_MODULE,
60 	.dai_link = efika_fabric_dai,
61 	.num_links = ARRAY_SIZE(efika_fabric_dai),
62 };
63 
64 static __init int efika_fabric_init(void)
65 {
66 	struct platform_device *pdev;
67 	int rc;
68 
69 	if (!of_machine_is_compatible("bplan,efika"))
70 		return -ENODEV;
71 
72 	pdev = platform_device_alloc("soc-audio", 1);
73 	if (!pdev) {
74 		pr_err("efika_fabric_init: platform_device_alloc() failed\n");
75 		return -ENODEV;
76 	}
77 
78 	platform_set_drvdata(pdev, &card);
79 
80 	rc = platform_device_add(pdev);
81 	if (rc) {
82 		pr_err("efika_fabric_init: platform_device_add() failed\n");
83 		platform_device_put(pdev);
84 		return -ENODEV;
85 	}
86 	return 0;
87 }
88 
89 module_init(efika_fabric_init);
90 
91 
92 MODULE_AUTHOR("Jon Smirl <jonsmirl@gmail.com>");
93 MODULE_DESCRIPTION(DRV_NAME ": mpc5200 Efika fabric driver");
94 MODULE_LICENSE("GPL");
95 
96