228 lines
6.1 KiB
C
228 lines
6.1 KiB
C
// SPDX-License-Identifier: (GPL-2.0+
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//
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// DSP machine driver
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//
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// Copyright (c) 2012-2013 by Tensilica Inc. ALL RIGHTS RESERVED.
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// Copyright 2018 NXP
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#include <linux/module.h>
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#include <linux/of_platform.h>
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#include <linux/i2c.h>
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#include <linux/of_gpio.h>
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#include <linux/slab.h>
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#include <linux/gpio.h>
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#include <linux/clk.h>
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#include <sound/soc.h>
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#include <sound/jack.h>
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#include <sound/control.h>
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#include <sound/pcm_params.h>
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#include <sound/soc-dapm.h>
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struct imx_dsp_audio_data {
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struct snd_soc_dai_link dai[2];
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struct snd_soc_card card;
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};
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static int imx_dsp_hw_params(struct snd_pcm_substream *substream,
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struct snd_pcm_hw_params *params)
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{
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struct snd_soc_pcm_runtime *rtd = substream->private_data;
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struct snd_soc_dai *codec_dai = rtd->codec_dai;
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int ret;
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u32 dai_format = SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_LEFT_J |
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SND_SOC_DAIFMT_CBS_CFS;
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ret = snd_soc_dai_set_sysclk(codec_dai, 0,
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24576000, SND_SOC_CLOCK_IN);
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if (ret) {
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dev_err(rtd->dev, "failed to set codec sysclk: %d\n", ret);
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return ret;
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}
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ret = snd_soc_dai_set_fmt(codec_dai, dai_format);
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if (ret) {
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dev_err(rtd->dev, "failed to set codec dai fmt: %d\n", ret);
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return ret;
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}
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return 0;
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}
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static struct snd_soc_ops imx_dsp_ops_be = {
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.hw_params = imx_dsp_hw_params,
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};
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static int be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
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struct snd_pcm_hw_params *params) {
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struct snd_interval *rate;
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struct snd_interval *channels;
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struct snd_mask *mask;
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rate = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
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rate->max = rate->min = 48000;
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channels = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
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channels->max = channels->min = 2;
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mask = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
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snd_mask_none(mask);
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snd_mask_set(mask, SNDRV_PCM_FORMAT_S16_LE);
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return 0;
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}
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static const struct snd_soc_dapm_route imx_dsp_audio_map[] = {
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{"Playback", NULL, "Compress Playback"},/* dai route for be and fe */
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{"Playback", NULL, "Playback"},
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};
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static int imx_dsp_audio_probe(struct platform_device *pdev)
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{
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struct device_node *cpu_np=NULL, *codec_np=NULL, *platform_np=NULL;
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struct snd_soc_dai_link_component *comp;
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struct platform_device *cpu_pdev;
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struct imx_dsp_audio_data *data;
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int ret;
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data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
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if (!data) {
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ret = -ENOMEM;
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goto fail;
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}
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comp = devm_kzalloc(&pdev->dev, 6 * sizeof(*comp), GFP_KERNEL);
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if (!comp) {
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ret = -ENOMEM;
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goto fail;
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}
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cpu_np = of_parse_phandle(pdev->dev.of_node, "cpu-dai", 0);
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if (!cpu_np) {
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dev_err(&pdev->dev, "cpu dai phandle missing or invalid\n");
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ret = -EINVAL;
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goto fail;
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}
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cpu_pdev = of_find_device_by_node(cpu_np);
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if (!cpu_pdev) {
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dev_err(&pdev->dev, "failed to find rpmsg platform device\n");
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ret = -EINVAL;
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goto fail;
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}
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codec_np = of_parse_phandle(pdev->dev.of_node, "audio-codec", 0);
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if (!codec_np) {
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dev_err(&pdev->dev, "phandle missing or invalid\n");
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ret = -EINVAL;
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goto fail;
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}
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platform_np = of_parse_phandle(pdev->dev.of_node, "audio-platform", 0);
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if (!platform_np) {
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dev_err(&pdev->dev, "platform missing or invalid\n");
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ret = -EINVAL;
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goto fail;
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}
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data->dai[0].cpus = &comp[0];
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data->dai[0].codecs = &comp[1];
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data->dai[0].platforms = &comp[2];
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data->dai[0].num_cpus = 1;
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data->dai[0].num_codecs = 1;
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data->dai[0].num_platforms = 1;
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data->dai[0].name = "dsp hifi fe";
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data->dai[0].stream_name = "dsp hifi fe";
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data->dai[0].codecs->dai_name = "snd-soc-dummy-dai";
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data->dai[0].codecs->name = "snd-soc-dummy";
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data->dai[0].cpus->dai_name = dev_name(&cpu_pdev->dev);
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data->dai[0].cpus->of_node = cpu_np;
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data->dai[0].platforms->of_node = platform_np;
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data->dai[0].playback_only = true;
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data->dai[0].capture_only = false;
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data->dai[0].dpcm_playback = 1;
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data->dai[0].dpcm_capture = 0;
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data->dai[0].dynamic = 1,
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data->dai[0].ignore_pmdown_time = 1,
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data->dai[0].dai_fmt = SND_SOC_DAIFMT_LEFT_J |
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SND_SOC_DAIFMT_NB_NF |
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SND_SOC_DAIFMT_CBS_CFS;
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data->dai[1].cpus = &comp[3];
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data->dai[1].codecs = &comp[4];
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data->dai[1].platforms = &comp[5];
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data->dai[1].num_cpus = 1;
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data->dai[1].num_codecs = 1;
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data->dai[1].num_platforms = 1;
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data->dai[1].name = "dsp hifi be";
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data->dai[1].stream_name = "dsp hifi be";
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data->dai[1].codecs->dai_name = "cs42888";
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data->dai[1].codecs->of_node = codec_np;
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data->dai[1].cpus->dai_name = "snd-soc-dummy-dai";
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data->dai[1].cpus->name = "snd-soc-dummy";
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data->dai[1].platforms->name = "snd-soc-dummy";
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data->dai[1].playback_only = true;
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data->dai[1].capture_only = false;
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data->dai[1].dpcm_playback = 1;
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data->dai[1].dpcm_capture = 0;
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data->dai[1].no_pcm = 1,
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data->dai[1].ignore_pmdown_time = 1,
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data->dai[1].dai_fmt = SND_SOC_DAIFMT_LEFT_J |
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SND_SOC_DAIFMT_NB_NF |
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SND_SOC_DAIFMT_CBS_CFS;
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data->dai[1].ops = &imx_dsp_ops_be;
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data->dai[1].be_hw_params_fixup = be_hw_params_fixup;
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data->card.dapm_routes = imx_dsp_audio_map;
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data->card.num_dapm_routes = ARRAY_SIZE(imx_dsp_audio_map);
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data->card.num_links = 2;
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data->card.dai_link = data->dai;
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data->card.dev = &pdev->dev;
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data->card.owner = THIS_MODULE;
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ret = snd_soc_of_parse_card_name(&data->card, "model");
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if (ret)
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goto fail;
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platform_set_drvdata(pdev, &data->card);
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snd_soc_card_set_drvdata(&data->card, data);
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ret = devm_snd_soc_register_card(&pdev->dev, &data->card);
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if (ret) {
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dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret);
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goto fail;
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}
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fail:
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if (cpu_np)
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of_node_put(cpu_np);
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if (codec_np)
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of_node_put(codec_np);
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if (platform_np)
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of_node_put(platform_np);
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return ret;
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}
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static const struct of_device_id imx_dsp_audio_dt_ids[] = {
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{ .compatible = "fsl,imx-dsp-audio", },
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{ /* sentinel */ }
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};
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MODULE_DEVICE_TABLE(of, imx_dsp_audio_dt_ids);
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static struct platform_driver imx_dsp_audio_driver = {
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.driver = {
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.name = "imx-dsp-audio",
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.owner = THIS_MODULE,
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.pm = &snd_soc_pm_ops,
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.of_match_table = imx_dsp_audio_dt_ids,
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},
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.probe = imx_dsp_audio_probe,
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};
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module_platform_driver(imx_dsp_audio_driver);
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MODULE_LICENSE("GPL v2");
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