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  */
30static 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
53static 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
61static 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
71static 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
101static 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
138static 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
151static const struct of_device_id snd_soc_mop500_match[] = {
152	{ .compatible = "stericsson,snd-soc-mop500", },
153	{},
154};
155MODULE_DEVICE_TABLE(of, snd_soc_mop500_match);
156
157static 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
166module_platform_driver(snd_soc_mop500_driver);
167