| // SPDX-License-Identifier: GPL-2.0-only |
| /* Copyright (c) 2011-2014, 2017-2018, The Linux Foundation. All rights reserved. |
| */ |
| |
| #include <linux/init.h> |
| #include <linux/module.h> |
| #include <linux/platform_device.h> |
| #include <linux/of_device.h> |
| #include <sound/core.h> |
| #include <sound/soc.h> |
| #include <sound/pcm.h> |
| |
| #define DRV_NAME "msm-pcm-hostless" |
| |
| static int msm_pcm_hostless_prepare(struct snd_pcm_substream *substream) |
| { |
| if (!substream) { |
| pr_err("%s: invalid params\n", __func__); |
| return -EINVAL; |
| } |
| pm_qos_remove_request(&substream->latency_pm_qos_req); |
| return 0; |
| } |
| |
| static const struct snd_pcm_ops msm_pcm_hostless_ops = { |
| .prepare = msm_pcm_hostless_prepare |
| }; |
| |
| static struct snd_soc_component_driver msm_soc_hostless_component = { |
| .name = DRV_NAME, |
| .ops = &msm_pcm_hostless_ops, |
| }; |
| |
| static int msm_pcm_hostless_probe(struct platform_device *pdev) |
| { |
| |
| pr_debug("%s: dev name %s\n", __func__, dev_name(&pdev->dev)); |
| return snd_soc_register_component(&pdev->dev, |
| &msm_soc_hostless_component, |
| NULL, 0); |
| } |
| |
| static int msm_pcm_hostless_remove(struct platform_device *pdev) |
| { |
| snd_soc_unregister_component(&pdev->dev); |
| return 0; |
| } |
| |
| static const struct of_device_id msm_pcm_hostless_dt_match[] = { |
| {.compatible = "qcom,msm-pcm-hostless"}, |
| {} |
| }; |
| |
| static struct platform_driver msm_pcm_hostless_driver = { |
| .driver = { |
| .name = "msm-pcm-hostless", |
| .owner = THIS_MODULE, |
| .of_match_table = msm_pcm_hostless_dt_match, |
| }, |
| .probe = msm_pcm_hostless_probe, |
| .remove = msm_pcm_hostless_remove, |
| }; |
| |
| int __init msm_pcm_hostless_init(void) |
| { |
| return platform_driver_register(&msm_pcm_hostless_driver); |
| } |
| |
| void msm_pcm_hostless_exit(void) |
| { |
| platform_driver_unregister(&msm_pcm_hostless_driver); |
| } |
| |
| MODULE_DESCRIPTION("Hostless platform driver"); |
| MODULE_LICENSE("GPL v2"); |