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