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, "alternate path for SOF firmware.");
20
21static char *tplg_path;
22module_param(tplg_path, charp, 0444);
23MODULE_PARM_DESC(tplg_path, "alternate path for SOF topology.");
24
25const struct dev_pm_ops sof_of_pm = {
26	.prepare = snd_sof_prepare,
27	.complete = snd_sof_complete,
28	SET_SYSTEM_SLEEP_PM_OPS(snd_sof_suspend, snd_sof_resume)
29	SET_RUNTIME_PM_OPS(snd_sof_runtime_suspend, snd_sof_runtime_resume,
30			   NULL)
31};
32EXPORT_SYMBOL(sof_of_pm);
33
34static void sof_of_probe_complete(struct device *dev)
35{
36	/* allow runtime_pm */
37	pm_runtime_set_autosuspend_delay(dev, SND_SOF_SUSPEND_DELAY_MS);
38	pm_runtime_use_autosuspend(dev);
39	pm_runtime_mark_last_busy(dev);
40	pm_runtime_set_active(dev);
41	pm_runtime_enable(dev);
42}
43
44int sof_of_probe(struct platform_device *pdev)
45{
46	struct device *dev = &pdev->dev;
47	const struct sof_dev_desc *desc;
48	struct snd_sof_pdata *sof_pdata;
49
50	dev_info(&pdev->dev, "DT DSP detected");
51
52	sof_pdata = devm_kzalloc(dev, sizeof(*sof_pdata), GFP_KERNEL);
53	if (!sof_pdata)
54		return -ENOMEM;
55
56	desc = device_get_match_data(dev);
57	if (!desc)
58		return -ENODEV;
59
60	if (!desc->ops) {
61		dev_err(dev, "error: no matching DT descriptor ops\n");
62		return -ENODEV;
63	}
64
65	sof_pdata->desc = desc;
66	sof_pdata->dev = &pdev->dev;
67	sof_pdata->fw_filename = desc->default_fw_filename[SOF_IPC];
68
69	if (fw_path)
70		sof_pdata->fw_filename_prefix = fw_path;
71	else
72		sof_pdata->fw_filename_prefix = sof_pdata->desc->default_fw_path[SOF_IPC];
73
74	if (tplg_path)
75		sof_pdata->tplg_filename_prefix = tplg_path;
76	else
77		sof_pdata->tplg_filename_prefix = sof_pdata->desc->default_tplg_path[SOF_IPC];
78
79	/* set callback to be called on successful device probe to enable runtime_pm */
80	sof_pdata->sof_probe_complete = sof_of_probe_complete;
81
82	/* call sof helper for DSP hardware probe */
83	return snd_sof_device_probe(dev, sof_pdata);
84}
85EXPORT_SYMBOL(sof_of_probe);
86
87int sof_of_remove(struct platform_device *pdev)
88{
89	pm_runtime_disable(&pdev->dev);
90
91	/* call sof helper for DSP hardware remove */
92	snd_sof_device_remove(&pdev->dev);
93
94	return 0;
95}
96EXPORT_SYMBOL(sof_of_remove);
97
98void sof_of_shutdown(struct platform_device *pdev)
99{
100	snd_sof_device_shutdown(&pdev->dev);
101}
102EXPORT_SYMBOL(sof_of_shutdown);
103
104MODULE_LICENSE("Dual BSD/GPL");
105