1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Copyright (C) ST-Ericsson SA 2012
4 *
5 * Author: Ola Lilja (ola.o.lilja@stericsson.com)
6 * for ST-Ericsson.
7 */
8
9 #include <asm/mach-types.h>
10
11 #include <linux/module.h>
12 #include <linux/io.h>
13 #include <linux/spi/spi.h>
14 #include <linux/of.h>
15
16 #include <sound/soc.h>
17 #include <sound/initval.h>
18
19 #include "ux500_pcm.h"
20 #include "ux500_msp_dai.h"
21
22 #include "mop500_ab8500.h"
23
24 /* Define the whole MOP500 soundcard, linking platform to the codec-drivers */
25 SND_SOC_DAILINK_DEFS(link1,
26 DAILINK_COMP_ARRAY(COMP_CPU("ux500-msp-i2s.1")),
27 DAILINK_COMP_ARRAY(COMP_CODEC("ab8500-codec.0", "ab8500-codec-dai.0")),
28 DAILINK_COMP_ARRAY(COMP_PLATFORM("ux500-msp-i2s.1")));
29
30 SND_SOC_DAILINK_DEFS(link2,
31 DAILINK_COMP_ARRAY(COMP_CPU("ux500-msp-i2s.3")),
32 DAILINK_COMP_ARRAY(COMP_CODEC("ab8500-codec.0", "ab8500-codec-dai.1")),
33 DAILINK_COMP_ARRAY(COMP_PLATFORM("ux500-msp-i2s.3")));
34
35 static struct snd_soc_dai_link mop500_dai_links[] = {
36 {
37 .name = "ab8500_0",
38 .stream_name = "ab8500_0",
39 .init = mop500_ab8500_machine_init,
40 .ops = mop500_ab8500_ops,
41 SND_SOC_DAILINK_REG(link1),
42 },
43 {
44 .name = "ab8500_1",
45 .stream_name = "ab8500_1",
46 .init = NULL,
47 .ops = mop500_ab8500_ops,
48 SND_SOC_DAILINK_REG(link2),
49 },
50 };
51
52 static struct snd_soc_card mop500_card = {
53 .name = "MOP500-card",
54 .owner = THIS_MODULE,
55 .probe = NULL,
56 .dai_link = mop500_dai_links,
57 .num_links = ARRAY_SIZE(mop500_dai_links),
58 };
59
60 static void mop500_of_node_put(void)
61 {
62 int i;
63
64 for (i = 0; i < 2; i++)
65 of_node_put(mop500_dai_links[i].cpus->of_node);
66
67 /* Both links use the same codec, which is refcounted only once */
68 of_node_put(mop500_dai_links[0].codecs->of_node);
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 for (i = 0; i < 2; i++)
84 of_node_put(msp_np[i]);
85 of_node_put(codec_np);
86 return -EINVAL;
87 }
88
89 for (i = 0; i < 2; i++) {
90 mop500_dai_links[i].cpus->of_node = msp_np[i];
91 mop500_dai_links[i].cpus->dai_name = NULL;
92 mop500_dai_links[i].platforms->of_node = msp_np[i];
93 mop500_dai_links[i].platforms->name = NULL;
94 mop500_dai_links[i].codecs->of_node = codec_np;
95 mop500_dai_links[i].codecs->name = NULL;
96 }
97
98 snd_soc_of_parse_card_name(&mop500_card, "stericsson,card-name");
99
100 return 0;
101 }
102
103 static int mop500_probe(struct platform_device *pdev)
104 {
105 struct device_node *np = pdev->dev.of_node;
106 int ret;
107
108 dev_dbg(&pdev->dev, "%s: Enter.\n", __func__);
109
110 mop500_card.dev = &pdev->dev;
111
112 ret = mop500_of_probe(pdev, np);
113 if (ret)
114 return ret;
115
116 dev_dbg(&pdev->dev, "%s: Card %s: Set platform drvdata.\n",
117 __func__, mop500_card.name);
118
119 snd_soc_card_set_drvdata(&mop500_card, NULL);
120
121 dev_dbg(&pdev->dev, "%s: Card %s: num_links = %d\n",
122 __func__, mop500_card.name, mop500_card.num_links);
123 dev_dbg(&pdev->dev, "%s: Card %s: DAI-link 0: name = %s\n",
124 __func__, mop500_card.name, mop500_card.dai_link[0].name);
125 dev_dbg(&pdev->dev, "%s: Card %s: DAI-link 0: stream_name = %s\n",
126 __func__, mop500_card.name,
127 mop500_card.dai_link[0].stream_name);
128
129 ret = snd_soc_register_card(&mop500_card);
130 if (ret)
131 dev_err(&pdev->dev,
132 "Error: snd_soc_register_card failed (%d)!\n", ret);
133
134 return ret;
135 }
136
137 static void mop500_remove(struct platform_device *pdev)
138 {
139 struct snd_soc_card *card = platform_get_drvdata(pdev);
140
141 pr_debug("%s: Enter.\n", __func__);
142
143 snd_soc_unregister_card(card);
144 mop500_ab8500_remove(card);
145 mop500_of_node_put();
146 }
147
148 static const struct of_device_id snd_soc_mop500_match[] = {
149 { .compatible = "stericsson,snd-soc-mop500", },
150 {},
151 };
152 MODULE_DEVICE_TABLE(of, snd_soc_mop500_match);
153
154 static struct platform_driver snd_soc_mop500_driver = {
155 .driver = {
156 .name = "snd-soc-mop500",
157 .of_match_table = snd_soc_mop500_match,
158 },
159 .probe = mop500_probe,
160 .remove_new = mop500_remove,
161 };
162
163 module_platform_driver(snd_soc_mop500_driver);
164
165 MODULE_LICENSE("GPL v2");
166 MODULE_DESCRIPTION("ASoC MOP500 board driver");
167 MODULE_AUTHOR("Ola Lilja");
168
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