sof-of-dev.c

  1// SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
  2//
  3// Copyright 2019 NXP
  4//
  5// Author: Daniel Baluta <daniel.baluta@nxp.com>
  6//
  7
  8#include <linux/firmware.h>
  9#include <linux/module.h>
 10#include <linux/moduleparam.h>
 11#include <linux/pm_runtime.h>
 12#include <sound/sof.h>
 13
 14#include "sof-of-dev.h"
 15#include "ops.h"
 16
 17static char *fw_path;
 18module_param(fw_path, charp, 0444);
 19MODULE_PARM_DESC(fw_path, "deprecated - moved to snd-sof module.");
 20
 21static char *fw_filename;
 22module_param(fw_filename, charp, 0444);
 23MODULE_PARM_DESC(fw_filename, "deprecated - moved to snd-sof module.");
 24
 25static char *tplg_path;
 26module_param(tplg_path, charp, 0444);
 27MODULE_PARM_DESC(tplg_path, "deprecated - moved to snd-sof module.");
 28
 29static char *tplg_filename;
 30module_param(tplg_filename, charp, 0444);
 31MODULE_PARM_DESC(tplg_filename, "deprecated - moved to snd-sof module.");
 32
 33EXPORT_DEV_PM_OPS(sof_of_pm) = {
 34	.prepare = snd_sof_prepare,
 35	.complete = snd_sof_complete,
 36	SYSTEM_SLEEP_PM_OPS(snd_sof_suspend, snd_sof_resume)
 37	RUNTIME_PM_OPS(snd_sof_runtime_suspend, snd_sof_runtime_resume, NULL)
 38};
 39
 40static void sof_of_probe_complete(struct device *dev)
 41{
 42	/* allow runtime_pm */
 43	pm_runtime_set_autosuspend_delay(dev, SND_SOF_SUSPEND_DELAY_MS);
 44	pm_runtime_use_autosuspend(dev);
 45	pm_runtime_mark_last_busy(dev);
 46	pm_runtime_set_active(dev);
 47	pm_runtime_enable(dev);
 48}
 49
 50int sof_of_probe(struct platform_device *pdev)
 51{
 52	struct device *dev = &pdev->dev;
 53	const struct sof_dev_desc *desc;
 54	struct snd_sof_pdata *sof_pdata;
 55
 56	dev_info(&pdev->dev, "DT DSP detected");
 57
 58	sof_pdata = devm_kzalloc(dev, sizeof(*sof_pdata), GFP_KERNEL);
 59	if (!sof_pdata)
 60		return -ENOMEM;
 61
 62	desc = device_get_match_data(dev);
 63	if (!desc)
 64		return -ENODEV;
 65
 66	if (!desc->ops) {
 67		dev_err(dev, "error: no matching DT descriptor ops\n");
 68		return -ENODEV;
 69	}
 70
 71	sof_pdata->desc = desc;
 72	sof_pdata->dev = &pdev->dev;
 73
 74	sof_pdata->ipc_file_profile_base.ipc_type = desc->ipc_default;
 75	sof_pdata->ipc_file_profile_base.fw_path = fw_path;
 76	sof_pdata->ipc_file_profile_base.tplg_path = tplg_path;
 77	sof_pdata->ipc_file_profile_base.fw_name = fw_filename;
 78	sof_pdata->ipc_file_profile_base.tplg_name = tplg_filename;
 79
 80	/* set callback to be called on successful device probe to enable runtime_pm */
 81	sof_pdata->sof_probe_complete = sof_of_probe_complete;
 82
 83	/* call sof helper for DSP hardware probe */
 84	return snd_sof_device_probe(dev, sof_pdata);
 85}
 86EXPORT_SYMBOL(sof_of_probe);
 87
 88void sof_of_remove(struct platform_device *pdev)
 89{
 90	pm_runtime_disable(&pdev->dev);
 91
 92	/* call sof helper for DSP hardware remove */
 93	snd_sof_device_remove(&pdev->dev);
 94}
 95EXPORT_SYMBOL(sof_of_remove);
 96
 97void sof_of_shutdown(struct platform_device *pdev)
 98{
 99	snd_sof_device_shutdown(&pdev->dev);
100}
101EXPORT_SYMBOL(sof_of_shutdown);
102
103MODULE_LICENSE("Dual BSD/GPL");
104MODULE_DESCRIPTION("SOF support for OF/DT platforms");