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
33const struct dev_pm_ops sof_of_pm = {
34 .prepare = snd_sof_prepare,
35 .complete = snd_sof_complete,
36 SET_SYSTEM_SLEEP_PM_OPS(snd_sof_suspend, snd_sof_resume)
37 SET_RUNTIME_PM_OPS(snd_sof_runtime_suspend, snd_sof_runtime_resume,
38 NULL)
39};
40EXPORT_SYMBOL(sof_of_pm);
41
42static void sof_of_probe_complete(struct device *dev)
43{
44 /* allow runtime_pm */
45 pm_runtime_set_autosuspend_delay(dev, SND_SOF_SUSPEND_DELAY_MS);
46 pm_runtime_use_autosuspend(dev);
47 pm_runtime_mark_last_busy(dev);
48 pm_runtime_set_active(dev);
49 pm_runtime_enable(dev);
50}
51
52int sof_of_probe(struct platform_device *pdev)
53{
54 struct device *dev = &pdev->dev;
55 const struct sof_dev_desc *desc;
56 struct snd_sof_pdata *sof_pdata;
57
58 dev_info(&pdev->dev, "DT DSP detected");
59
60 sof_pdata = devm_kzalloc(dev, sizeof(*sof_pdata), GFP_KERNEL);
61 if (!sof_pdata)
62 return -ENOMEM;
63
64 desc = device_get_match_data(dev);
65 if (!desc)
66 return -ENODEV;
67
68 if (!desc->ops) {
69 dev_err(dev, "error: no matching DT descriptor ops\n");
70 return -ENODEV;
71 }
72
73 sof_pdata->desc = desc;
74 sof_pdata->dev = &pdev->dev;
75
76 sof_pdata->ipc_file_profile_base.ipc_type = desc->ipc_default;
77 sof_pdata->ipc_file_profile_base.fw_path = fw_path;
78 sof_pdata->ipc_file_profile_base.tplg_path = tplg_path;
79 sof_pdata->ipc_file_profile_base.fw_name = fw_filename;
80 sof_pdata->ipc_file_profile_base.tplg_name = tplg_filename;
81
82 /* set callback to be called on successful device probe to enable runtime_pm */
83 sof_pdata->sof_probe_complete = sof_of_probe_complete;
84
85 /* call sof helper for DSP hardware probe */
86 return snd_sof_device_probe(dev, sof_pdata);
87}
88EXPORT_SYMBOL(sof_of_probe);
89
90void sof_of_remove(struct platform_device *pdev)
91{
92 pm_runtime_disable(&pdev->dev);
93
94 /* call sof helper for DSP hardware remove */
95 snd_sof_device_remove(&pdev->dev);
96}
97EXPORT_SYMBOL(sof_of_remove);
98
99void sof_of_shutdown(struct platform_device *pdev)
100{
101 snd_sof_device_shutdown(&pdev->dev);
102}
103EXPORT_SYMBOL(sof_of_shutdown);
104
105MODULE_LICENSE("Dual BSD/GPL");
106MODULE_DESCRIPTION("SOF support for OF/DT platforms");