Merge tag 'sound-4.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai...
[sfrench/cifs-2.6.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                 .platform_name = "ux500-msp-i2s.1",
37                 .codec_name = "ab8500-codec.0",
38                 .init = mop500_ab8500_machine_init,
39                 .ops = mop500_ab8500_ops,
40         },
41         {
42                 .name = "ab8500_1",
43                 .stream_name = "ab8500_1",
44                 .cpu_dai_name = "ux500-msp-i2s.3",
45                 .codec_dai_name = "ab8500-codec-dai.1",
46                 .platform_name = "ux500-msp-i2s.3",
47                 .codec_name = "ab8500-codec.0",
48                 .init = NULL,
49                 .ops = mop500_ab8500_ops,
50         },
51 };
52
53 static struct snd_soc_card mop500_card = {
54         .name = "MOP500-card",
55         .owner = THIS_MODULE,
56         .probe = NULL,
57         .dai_link = mop500_dai_links,
58         .num_links = ARRAY_SIZE(mop500_dai_links),
59 };
60
61 static void mop500_of_node_put(void)
62 {
63         int i;
64
65         for (i = 0; i < 2; i++) {
66                 of_node_put(mop500_dai_links[i].cpu_of_node);
67                 of_node_put(mop500_dai_links[i].codec_of_node);
68         }
69 }
70
71 static int mop500_of_probe(struct platform_device *pdev,
72                            struct device_node *np)
73 {
74         struct device_node *codec_np, *msp_np[2];
75         int i;
76
77         msp_np[0] = of_parse_phandle(np, "stericsson,cpu-dai", 0);
78         msp_np[1] = of_parse_phandle(np, "stericsson,cpu-dai", 1);
79         codec_np  = of_parse_phandle(np, "stericsson,audio-codec", 0);
80
81         if (!(msp_np[0] && msp_np[1] && codec_np)) {
82                 dev_err(&pdev->dev, "Phandle missing or invalid\n");
83                 mop500_of_node_put();
84                 return -EINVAL;
85         }
86
87         for (i = 0; i < 2; i++) {
88                 mop500_dai_links[i].cpu_of_node = msp_np[i];
89                 mop500_dai_links[i].cpu_dai_name = NULL;
90                 mop500_dai_links[i].platform_of_node = msp_np[i];
91                 mop500_dai_links[i].platform_name = NULL;
92                 mop500_dai_links[i].codec_of_node = codec_np;
93                 mop500_dai_links[i].codec_name = NULL;
94         }
95
96         snd_soc_of_parse_card_name(&mop500_card, "stericsson,card-name");
97
98         return 0;
99 }
100
101 static int mop500_probe(struct platform_device *pdev)
102 {
103         struct device_node *np = pdev->dev.of_node;
104         int ret;
105
106         dev_dbg(&pdev->dev, "%s: Enter.\n", __func__);
107
108         mop500_card.dev = &pdev->dev;
109
110         if (np) {
111                 ret = mop500_of_probe(pdev, np);
112                 if (ret)
113                         return ret;
114         }
115
116         dev_dbg(&pdev->dev, "%s: Card %s: Set platform drvdata.\n",
117                 __func__, mop500_card.name);
118         platform_set_drvdata(pdev, &mop500_card);
119
120         snd_soc_card_set_drvdata(&mop500_card, NULL);
121
122         dev_dbg(&pdev->dev, "%s: Card %s: num_links = %d\n",
123                 __func__, mop500_card.name, mop500_card.num_links);
124         dev_dbg(&pdev->dev, "%s: Card %s: DAI-link 0: name = %s\n",
125                 __func__, mop500_card.name, mop500_card.dai_link[0].name);
126         dev_dbg(&pdev->dev, "%s: Card %s: DAI-link 0: stream_name = %s\n",
127                 __func__, mop500_card.name,
128                 mop500_card.dai_link[0].stream_name);
129
130         ret = snd_soc_register_card(&mop500_card);
131         if (ret)
132                 dev_err(&pdev->dev,
133                         "Error: snd_soc_register_card failed (%d)!\n", ret);
134
135         return ret;
136 }
137
138 static int mop500_remove(struct platform_device *pdev)
139 {
140         struct snd_soc_card *mop500_card = platform_get_drvdata(pdev);
141
142         pr_debug("%s: Enter.\n", __func__);
143
144         snd_soc_unregister_card(mop500_card);
145         mop500_ab8500_remove(mop500_card);
146         mop500_of_node_put();
147
148         return 0;
149 }
150
151 static const struct of_device_id snd_soc_mop500_match[] = {
152         { .compatible = "stericsson,snd-soc-mop500", },
153         {},
154 };
155 MODULE_DEVICE_TABLE(of, snd_soc_mop500_match);
156
157 static struct platform_driver snd_soc_mop500_driver = {
158         .driver = {
159                 .name = "snd-soc-mop500",
160                 .of_match_table = snd_soc_mop500_match,
161         },
162         .probe = mop500_probe,
163         .remove = mop500_remove,
164 };
165
166 module_platform_driver(snd_soc_mop500_driver);