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Viewing changes to buildroot/src/oem-audiosdw-lp1836324-1ubuntu1.3/soc/sirf/sirf-audio-port.c

  • Committer: Hui Wang
  • Date: 2019-12-13 02:41:40 UTC
  • Revision ID: hui.wang@canonical.com-20191213024140-1cprdcbl3122fn85
insert pc-oem-dkms

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buildroot/src/oem-audiosdw-lp1836324-1ubuntu1.3/soc/sirf/sirf-audio-port.c
 
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// SPDX-License-Identifier: GPL-2.0-or-later
 
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/*
 
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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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#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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                .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");