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a731e217 RY |
1 | /* |
2 | * SiRF Audio port driver | |
3 | * | |
4 | * Copyright (c) 2011 Cambridge Silicon Radio Limited, a CSR plc group company. | |
5 | * | |
6 | * Licensed under GPLv2 or later. | |
7 | */ | |
8 | #include <linux/module.h> | |
a731e217 RY |
9 | #include <sound/soc.h> |
10 | #include <sound/dmaengine_pcm.h> | |
11 | ||
a731e217 RY |
12 | struct sirf_audio_port { |
13 | struct regmap *regmap; | |
14 | struct snd_dmaengine_dai_dma_data playback_dma_data; | |
15 | struct snd_dmaengine_dai_dma_data capture_dma_data; | |
16 | }; | |
17 | ||
a731e217 RY |
18 | |
19 | static int sirf_audio_port_dai_probe(struct snd_soc_dai *dai) | |
20 | { | |
21 | struct sirf_audio_port *port = snd_soc_dai_get_drvdata(dai); | |
22 | snd_soc_dai_init_dma_data(dai, &port->playback_dma_data, | |
23 | &port->capture_dma_data); | |
24 | return 0; | |
25 | } | |
26 | ||
a731e217 RY |
27 | static struct snd_soc_dai_driver sirf_audio_port_dai = { |
28 | .probe = sirf_audio_port_dai_probe, | |
29 | .name = "sirf-audio-port", | |
30 | .id = 0, | |
31 | .playback = { | |
32 | .channels_min = 2, | |
33 | .channels_max = 2, | |
34 | .rates = SNDRV_PCM_RATE_48000, | |
35 | .formats = SNDRV_PCM_FMTBIT_S16_LE, | |
36 | }, | |
37 | .capture = { | |
38 | .channels_min = 1, | |
39 | .channels_max = 2, | |
40 | .rates = SNDRV_PCM_RATE_48000, | |
41 | .formats = SNDRV_PCM_FMTBIT_S16_LE, | |
42 | }, | |
a731e217 RY |
43 | }; |
44 | ||
45 | static const struct snd_soc_component_driver sirf_audio_port_component = { | |
46 | .name = "sirf-audio-port", | |
47 | }; | |
48 | ||
a731e217 RY |
49 | static int sirf_audio_port_probe(struct platform_device *pdev) |
50 | { | |
51 | int ret; | |
52 | struct sirf_audio_port *port; | |
a731e217 RY |
53 | |
54 | port = devm_kzalloc(&pdev->dev, | |
55 | sizeof(struct sirf_audio_port), GFP_KERNEL); | |
56 | if (!port) | |
57 | return -ENOMEM; | |
58 | ||
a731e217 RY |
59 | ret = devm_snd_soc_register_component(&pdev->dev, |
60 | &sirf_audio_port_component, &sirf_audio_port_dai, 1); | |
61 | if (ret) | |
62 | return ret; | |
63 | ||
64 | platform_set_drvdata(pdev, port); | |
65 | return devm_snd_dmaengine_pcm_register(&pdev->dev, NULL, 0); | |
66 | } | |
67 | ||
68 | static const struct of_device_id sirf_audio_port_of_match[] = { | |
69 | { .compatible = "sirf,audio-port", }, | |
70 | {} | |
71 | }; | |
72 | MODULE_DEVICE_TABLE(of, sirf_audio_port_of_match); | |
73 | ||
74 | static struct platform_driver sirf_audio_port_driver = { | |
75 | .driver = { | |
76 | .name = "sirf-audio-port", | |
a731e217 RY |
77 | .of_match_table = sirf_audio_port_of_match, |
78 | }, | |
79 | .probe = sirf_audio_port_probe, | |
80 | }; | |
81 | ||
82 | module_platform_driver(sirf_audio_port_driver); | |
83 | ||
84 | MODULE_DESCRIPTION("SiRF Audio Port driver"); | |
85 | MODULE_AUTHOR("RongJun Ying <Rongjun.Ying@csr.com>"); | |
86 | MODULE_LICENSE("GPL v2"); |