1 | // SPDX-License-Identifier: GPL-2.0 |
2 | // |
3 | // Phytec pcm030 driver for the PSC of the Freescale MPC52xx |
4 | // configured as AC97 interface |
5 | // |
6 | // Copyright 2008 Jon Smirl, Digispeaker |
7 | // Author: Jon Smirl <jonsmirl@gmail.com> |
8 | |
9 | #include <linux/init.h> |
10 | #include <linux/module.h> |
11 | #include <linux/device.h> |
12 | #include <linux/of.h> |
13 | |
14 | #include <sound/soc.h> |
15 | |
16 | #include "mpc5200_dma.h" |
17 | |
18 | #define DRV_NAME "pcm030-audio-fabric" |
19 | |
20 | struct pcm030_audio_data { |
21 | struct snd_soc_card *card; |
22 | struct platform_device *codec_device; |
23 | }; |
24 | |
25 | SND_SOC_DAILINK_DEFS(analog, |
26 | DAILINK_COMP_ARRAY(COMP_CPU("mpc5200-psc-ac97.0" )), |
27 | DAILINK_COMP_ARRAY(COMP_CODEC("wm9712-codec" , "wm9712-hifi" )), |
28 | DAILINK_COMP_ARRAY(COMP_EMPTY())); |
29 | |
30 | SND_SOC_DAILINK_DEFS(iec958, |
31 | DAILINK_COMP_ARRAY(COMP_CPU("mpc5200-psc-ac97.1" )), |
32 | DAILINK_COMP_ARRAY(COMP_CODEC("wm9712-codec" , "wm9712-aux" )), |
33 | DAILINK_COMP_ARRAY(COMP_EMPTY())); |
34 | |
35 | static struct snd_soc_dai_link pcm030_fabric_dai[] = { |
36 | { |
37 | .name = "AC97.0" , |
38 | .stream_name = "AC97 Analog" , |
39 | SND_SOC_DAILINK_REG(analog), |
40 | }, |
41 | { |
42 | .name = "AC97.1" , |
43 | .stream_name = "AC97 IEC958" , |
44 | SND_SOC_DAILINK_REG(iec958), |
45 | }, |
46 | }; |
47 | |
48 | static struct snd_soc_card pcm030_card = { |
49 | .name = "pcm030" , |
50 | .owner = THIS_MODULE, |
51 | .dai_link = pcm030_fabric_dai, |
52 | .num_links = ARRAY_SIZE(pcm030_fabric_dai), |
53 | }; |
54 | |
55 | static int pcm030_fabric_probe(struct platform_device *op) |
56 | { |
57 | struct device_node *np = op->dev.of_node; |
58 | struct device_node *platform_np; |
59 | struct snd_soc_card *card = &pcm030_card; |
60 | struct pcm030_audio_data *pdata; |
61 | struct snd_soc_dai_link *dai_link; |
62 | int ret; |
63 | int i; |
64 | |
65 | if (!of_machine_is_compatible(compat: "phytec,pcm030" )) |
66 | return -ENODEV; |
67 | |
68 | pdata = devm_kzalloc(dev: &op->dev, size: sizeof(struct pcm030_audio_data), |
69 | GFP_KERNEL); |
70 | if (!pdata) |
71 | return -ENOMEM; |
72 | |
73 | card->dev = &op->dev; |
74 | |
75 | pdata->card = card; |
76 | |
77 | platform_np = of_parse_phandle(np, phandle_name: "asoc-platform" , index: 0); |
78 | if (!platform_np) { |
79 | dev_err(&op->dev, "ac97 not registered\n" ); |
80 | return -ENODEV; |
81 | } |
82 | |
83 | for_each_card_prelinks(card, i, dai_link) |
84 | dai_link->platforms->of_node = platform_np; |
85 | |
86 | ret = request_module("snd-soc-wm9712" ); |
87 | if (ret) |
88 | dev_err(&op->dev, "request_module returned: %d\n" , ret); |
89 | |
90 | pdata->codec_device = platform_device_alloc(name: "wm9712-codec" , id: -1); |
91 | if (!pdata->codec_device) |
92 | dev_err(&op->dev, "platform_device_alloc() failed\n" ); |
93 | |
94 | ret = platform_device_add(pdev: pdata->codec_device); |
95 | if (ret) { |
96 | dev_err(&op->dev, "platform_device_add() failed: %d\n" , ret); |
97 | platform_device_put(pdev: pdata->codec_device); |
98 | } |
99 | |
100 | ret = snd_soc_register_card(card); |
101 | if (ret) { |
102 | dev_err(&op->dev, "snd_soc_register_card() failed: %d\n" , ret); |
103 | platform_device_unregister(pdata->codec_device); |
104 | } |
105 | |
106 | platform_set_drvdata(pdev: op, data: pdata); |
107 | return ret; |
108 | |
109 | } |
110 | |
111 | static void pcm030_fabric_remove(struct platform_device *op) |
112 | { |
113 | struct pcm030_audio_data *pdata = platform_get_drvdata(pdev: op); |
114 | |
115 | snd_soc_unregister_card(card: pdata->card); |
116 | platform_device_unregister(pdata->codec_device); |
117 | } |
118 | |
119 | static const struct of_device_id pcm030_audio_match[] = { |
120 | { .compatible = "phytec,pcm030-audio-fabric" , }, |
121 | {} |
122 | }; |
123 | MODULE_DEVICE_TABLE(of, pcm030_audio_match); |
124 | |
125 | static struct platform_driver pcm030_fabric_driver = { |
126 | .probe = pcm030_fabric_probe, |
127 | .remove_new = pcm030_fabric_remove, |
128 | .driver = { |
129 | .name = DRV_NAME, |
130 | .of_match_table = pcm030_audio_match, |
131 | }, |
132 | }; |
133 | |
134 | module_platform_driver(pcm030_fabric_driver); |
135 | |
136 | |
137 | MODULE_AUTHOR("Jon Smirl <jonsmirl@gmail.com>" ); |
138 | MODULE_DESCRIPTION(DRV_NAME ": mpc5200 pcm030 fabric driver" ); |
139 | MODULE_LICENSE("GPL" ); |
140 | |
141 | |