Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
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");