88 lines
2.1 KiB
C
88 lines
2.1 KiB
C
/*
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* SiRF Audio port driver
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*
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* Copyright (c) 2011 Cambridge Silicon Radio Limited, a CSR plc group company.
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*
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* Licensed under GPLv2 or later.
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*/
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#include <linux/module.h>
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#include <sound/soc.h>
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#include <sound/dmaengine_pcm.h>
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struct sirf_audio_port {
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struct regmap *regmap;
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struct snd_dmaengine_dai_dma_data playback_dma_data;
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struct snd_dmaengine_dai_dma_data capture_dma_data;
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};
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static int sirf_audio_port_dai_probe(struct snd_soc_dai *dai)
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{
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struct sirf_audio_port *port = snd_soc_dai_get_drvdata(dai);
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snd_soc_dai_init_dma_data(dai, &port->playback_dma_data,
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&port->capture_dma_data);
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return 0;
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}
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static struct snd_soc_dai_driver sirf_audio_port_dai = {
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.probe = sirf_audio_port_dai_probe,
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.name = "sirf-audio-port",
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.id = 0,
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.playback = {
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.channels_min = 2,
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.channels_max = 2,
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.rates = SNDRV_PCM_RATE_48000,
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.formats = SNDRV_PCM_FMTBIT_S16_LE,
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},
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.capture = {
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.channels_min = 1,
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.channels_max = 2,
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.rates = SNDRV_PCM_RATE_48000,
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.formats = SNDRV_PCM_FMTBIT_S16_LE,
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},
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};
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static const struct snd_soc_component_driver sirf_audio_port_component = {
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.name = "sirf-audio-port",
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};
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static int sirf_audio_port_probe(struct platform_device *pdev)
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{
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int ret;
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struct sirf_audio_port *port;
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port = devm_kzalloc(&pdev->dev,
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sizeof(struct sirf_audio_port), GFP_KERNEL);
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if (!port)
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return -ENOMEM;
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ret = devm_snd_soc_register_component(&pdev->dev,
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&sirf_audio_port_component, &sirf_audio_port_dai, 1);
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if (ret)
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return ret;
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platform_set_drvdata(pdev, port);
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return devm_snd_dmaengine_pcm_register(&pdev->dev, NULL, 0);
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}
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static const struct of_device_id sirf_audio_port_of_match[] = {
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{ .compatible = "sirf,audio-port", },
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{}
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};
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MODULE_DEVICE_TABLE(of, sirf_audio_port_of_match);
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static struct platform_driver sirf_audio_port_driver = {
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.driver = {
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.name = "sirf-audio-port",
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.owner = THIS_MODULE,
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.of_match_table = sirf_audio_port_of_match,
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},
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.probe = sirf_audio_port_probe,
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};
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module_platform_driver(sirf_audio_port_driver);
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MODULE_DESCRIPTION("SiRF Audio Port driver");
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MODULE_AUTHOR("RongJun Ying <Rongjun.Ying@csr.com>");
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MODULE_LICENSE("GPL v2");
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