1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
|
// SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
//
// This file is provided under a dual BSD/GPLv2 license. When using or
// redistributing this file, you may do so under either license.
//
// Copyright(c) 2018 Intel Corporation
//
// Author: Liam Girdwood <liam.r.girdwood@linux.intel.com>
//
#include <linux/acpi.h>
#include <linux/firmware.h>
#include <linux/module.h>
#include <linux/pm_runtime.h>
#include <sound/soc-acpi.h>
#include <sound/soc-acpi-intel-match.h>
#include <sound/sof.h>
#include "../intel/common/soc-intel-quirks.h"
#include "ops.h"
#include "sof-acpi-dev.h"
/* platform specific devices */
#include "intel/shim.h"
static char *fw_path;
module_param(fw_path, charp, 0444);
MODULE_PARM_DESC(fw_path, "alternate path for SOF firmware.");
static char *tplg_path;
module_param(tplg_path, charp, 0444);
MODULE_PARM_DESC(tplg_path, "alternate path for SOF topology.");
static int sof_acpi_debug;
module_param_named(sof_acpi_debug, sof_acpi_debug, int, 0444);
MODULE_PARM_DESC(sof_acpi_debug, "SOF ACPI debug options (0x0 all off)");
#define SOF_ACPI_DISABLE_PM_RUNTIME BIT(0)
const struct dev_pm_ops sof_acpi_pm = {
SET_SYSTEM_SLEEP_PM_OPS(snd_sof_suspend, snd_sof_resume)
SET_RUNTIME_PM_OPS(snd_sof_runtime_suspend, snd_sof_runtime_resume,
snd_sof_runtime_idle)
};
EXPORT_SYMBOL_NS(sof_acpi_pm, SND_SOC_SOF_ACPI_DEV);
static void sof_acpi_probe_complete(struct device *dev)
{
dev_dbg(dev, "Completing SOF ACPI probe");
if (sof_acpi_debug & SOF_ACPI_DISABLE_PM_RUNTIME)
return;
/* allow runtime_pm */
pm_runtime_set_autosuspend_delay(dev, SND_SOF_SUSPEND_DELAY_MS);
pm_runtime_use_autosuspend(dev);
pm_runtime_enable(dev);
}
int sof_acpi_probe(struct platform_device *pdev, const struct sof_dev_desc *desc)
{
struct device *dev = &pdev->dev;
struct snd_sof_pdata *sof_pdata;
dev_dbg(dev, "ACPI DSP detected");
sof_pdata = devm_kzalloc(dev, sizeof(*sof_pdata), GFP_KERNEL);
if (!sof_pdata)
return -ENOMEM;
if (!desc->ops) {
dev_err(dev, "error: no matching ACPI descriptor ops\n");
return -ENODEV;
}
sof_pdata->desc = desc;
sof_pdata->dev = &pdev->dev;
sof_pdata->ipc_file_profile_base.ipc_type = desc->ipc_default;
sof_pdata->ipc_file_profile_base.fw_path = fw_path;
sof_pdata->ipc_file_profile_base.tplg_path = tplg_path;
/* set callback to be called on successful device probe to enable runtime_pm */
sof_pdata->sof_probe_complete = sof_acpi_probe_complete;
/* call sof helper for DSP hardware probe */
return snd_sof_device_probe(dev, sof_pdata);
}
EXPORT_SYMBOL_NS(sof_acpi_probe, SND_SOC_SOF_ACPI_DEV);
void sof_acpi_remove(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
if (!(sof_acpi_debug & SOF_ACPI_DISABLE_PM_RUNTIME))
pm_runtime_disable(dev);
/* call sof helper for DSP hardware remove */
snd_sof_device_remove(dev);
}
EXPORT_SYMBOL_NS(sof_acpi_remove, SND_SOC_SOF_ACPI_DEV);
MODULE_LICENSE("Dual BSD/GPL");
MODULE_DESCRIPTION("SOF support for ACPI platforms");
|
