100 lines
2.2 KiB
C
100 lines
2.2 KiB
C
// SPDX-License-Identifier: GPL-2.0
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// Copyright (c) 2018, Linaro Limited
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#include <linux/module.h>
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#include <linux/platform_device.h>
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#include <linux/of_device.h>
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#include <sound/soc.h>
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#include <sound/soc-dapm.h>
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#include <sound/pcm.h>
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#include "common.h"
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static int apq8096_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
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struct snd_pcm_hw_params *params)
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{
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struct snd_interval *rate = hw_param_interval(params,
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SNDRV_PCM_HW_PARAM_RATE);
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struct snd_interval *channels = hw_param_interval(params,
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SNDRV_PCM_HW_PARAM_CHANNELS);
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rate->min = rate->max = 48000;
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channels->min = channels->max = 2;
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return 0;
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}
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static void apq8096_add_be_ops(struct snd_soc_card *card)
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{
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struct snd_soc_dai_link *link = card->dai_link;
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int i, num_links = card->num_links;
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for (i = 0; i < num_links; i++) {
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if (link->no_pcm == 1)
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link->be_hw_params_fixup = apq8096_be_hw_params_fixup;
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link++;
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}
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}
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static int apq8096_platform_probe(struct platform_device *pdev)
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{
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struct snd_soc_card *card;
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struct device *dev = &pdev->dev;
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int ret;
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card = kzalloc(sizeof(*card), GFP_KERNEL);
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if (!card)
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return -ENOMEM;
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card->dev = dev;
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dev_set_drvdata(dev, card);
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ret = qcom_snd_parse_of(card);
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if (ret) {
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dev_err(dev, "Error parsing OF data\n");
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goto err;
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}
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apq8096_add_be_ops(card);
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ret = snd_soc_register_card(card);
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if (ret)
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goto err_card_register;
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return 0;
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err_card_register:
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kfree(card->dai_link);
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err:
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kfree(card);
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return ret;
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}
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static int apq8096_platform_remove(struct platform_device *pdev)
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{
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struct snd_soc_card *card = dev_get_drvdata(&pdev->dev);
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snd_soc_unregister_card(card);
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kfree(card->dai_link);
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kfree(card);
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return 0;
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}
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static const struct of_device_id msm_snd_apq8096_dt_match[] = {
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{.compatible = "qcom,apq8096-sndcard"},
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{}
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};
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MODULE_DEVICE_TABLE(of, msm_snd_apq8096_dt_match);
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static struct platform_driver msm_snd_apq8096_driver = {
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.probe = apq8096_platform_probe,
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.remove = apq8096_platform_remove,
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.driver = {
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.name = "msm-snd-apq8096",
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.of_match_table = msm_snd_apq8096_dt_match,
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},
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};
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module_platform_driver(msm_snd_apq8096_driver);
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MODULE_AUTHOR("Srinivas Kandagatla <srinivas.kandagatla@linaro.org");
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MODULE_DESCRIPTION("APQ8096 ASoC Machine Driver");
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MODULE_LICENSE("GPL v2");
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