Merge remote-tracking branch 'asoc/fix/intel' into asoc-linus
[muen/linux.git] / sound / soc / ux500 / mop500.c
1 /*
2  * Copyright (C) ST-Ericsson SA 2012
3  *
4  * Author: Ola Lilja (ola.o.lilja@stericsson.com)
5  *         for ST-Ericsson.
6  *
7  * License terms:
8  *
9  * This program is free software; you can redistribute it and/or modify
10  * it under the terms of the GNU General Public License version 2 as published
11  * by the Free Software Foundation.
12  */
13
14 #include <asm/mach-types.h>
15
16 #include <linux/module.h>
17 #include <linux/io.h>
18 #include <linux/spi/spi.h>
19 #include <linux/of.h>
20
21 #include <sound/soc.h>
22 #include <sound/initval.h>
23
24 #include "ux500_pcm.h"
25 #include "ux500_msp_dai.h"
26
27 #include "mop500_ab8500.h"
28
29 /* Define the whole MOP500 soundcard, linking platform to the codec-drivers  */
30 static struct snd_soc_dai_link mop500_dai_links[] = {
31         {
32                 .name = "ab8500_0",
33                 .stream_name = "ab8500_0",
34                 .cpu_dai_name = "ux500-msp-i2s.1",
35                 .codec_dai_name = "ab8500-codec-dai.0",
36                 .codec_name = "ab8500-codec.0",
37                 .init = mop500_ab8500_machine_init,
38                 .ops = mop500_ab8500_ops,
39         },
40         {
41                 .name = "ab8500_1",
42                 .stream_name = "ab8500_1",
43                 .cpu_dai_name = "ux500-msp-i2s.3",
44                 .codec_dai_name = "ab8500-codec-dai.1",
45                 .codec_name = "ab8500-codec.0",
46                 .init = NULL,
47                 .ops = mop500_ab8500_ops,
48         },
49 };
50
51 static struct snd_soc_card mop500_card = {
52         .name = "MOP500-card",
53         .owner = THIS_MODULE,
54         .probe = NULL,
55         .dai_link = mop500_dai_links,
56         .num_links = ARRAY_SIZE(mop500_dai_links),
57 };
58
59 static void mop500_of_node_put(void)
60 {
61         int i;
62
63         for (i = 0; i < 2; i++) {
64                 of_node_put(mop500_dai_links[i].cpu_of_node);
65                 of_node_put(mop500_dai_links[i].codec_of_node);
66         }
67 }
68
69 static int mop500_of_probe(struct platform_device *pdev,
70                            struct device_node *np)
71 {
72         struct device_node *codec_np, *msp_np[2];
73         int i;
74
75         msp_np[0] = of_parse_phandle(np, "stericsson,cpu-dai", 0);
76         msp_np[1] = of_parse_phandle(np, "stericsson,cpu-dai", 1);
77         codec_np  = of_parse_phandle(np, "stericsson,audio-codec", 0);
78
79         if (!(msp_np[0] && msp_np[1] && codec_np)) {
80                 dev_err(&pdev->dev, "Phandle missing or invalid\n");
81                 mop500_of_node_put();
82                 return -EINVAL;
83         }
84
85         for (i = 0; i < 2; i++) {
86                 mop500_dai_links[i].cpu_of_node = msp_np[i];
87                 mop500_dai_links[i].cpu_dai_name = NULL;
88                 mop500_dai_links[i].codec_of_node = codec_np;
89                 mop500_dai_links[i].codec_name = NULL;
90         }
91
92         snd_soc_of_parse_card_name(&mop500_card, "stericsson,card-name");
93
94         return 0;
95 }
96
97 static int mop500_probe(struct platform_device *pdev)
98 {
99         struct device_node *np = pdev->dev.of_node;
100         int ret;
101
102         dev_dbg(&pdev->dev, "%s: Enter.\n", __func__);
103
104         mop500_card.dev = &pdev->dev;
105
106         if (np) {
107                 ret = mop500_of_probe(pdev, np);
108                 if (ret)
109                         return ret;
110         }
111
112         dev_dbg(&pdev->dev, "%s: Card %s: Set platform drvdata.\n",
113                 __func__, mop500_card.name);
114         platform_set_drvdata(pdev, &mop500_card);
115
116         snd_soc_card_set_drvdata(&mop500_card, NULL);
117
118         dev_dbg(&pdev->dev, "%s: Card %s: num_links = %d\n",
119                 __func__, mop500_card.name, mop500_card.num_links);
120         dev_dbg(&pdev->dev, "%s: Card %s: DAI-link 0: name = %s\n",
121                 __func__, mop500_card.name, mop500_card.dai_link[0].name);
122         dev_dbg(&pdev->dev, "%s: Card %s: DAI-link 0: stream_name = %s\n",
123                 __func__, mop500_card.name,
124                 mop500_card.dai_link[0].stream_name);
125
126         ret = snd_soc_register_card(&mop500_card);
127         if (ret)
128                 dev_err(&pdev->dev,
129                         "Error: snd_soc_register_card failed (%d)!\n", ret);
130
131         return ret;
132 }
133
134 static int mop500_remove(struct platform_device *pdev)
135 {
136         struct snd_soc_card *mop500_card = platform_get_drvdata(pdev);
137
138         pr_debug("%s: Enter.\n", __func__);
139
140         snd_soc_unregister_card(mop500_card);
141         mop500_ab8500_remove(mop500_card);
142         mop500_of_node_put();
143
144         return 0;
145 }
146
147 static const struct of_device_id snd_soc_mop500_match[] = {
148         { .compatible = "stericsson,snd-soc-mop500", },
149         {},
150 };
151 MODULE_DEVICE_TABLE(of, snd_soc_mop500_match);
152
153 static struct platform_driver snd_soc_mop500_driver = {
154         .driver = {
155                 .name = "snd-soc-mop500",
156                 .of_match_table = snd_soc_mop500_match,
157         },
158         .probe = mop500_probe,
159         .remove = mop500_remove,
160 };
161
162 module_platform_driver(snd_soc_mop500_driver);