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
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
|
// 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. All rights reserved.
//
// Author: Liam Girdwood <liam.r.girdwood@linux.intel.com>
//
#include <linux/firmware.h>
#include <linux/dmi.h>
#include <linux/module.h>
#include <linux/pci.h>
#include <linux/pm_runtime.h>
#include <sound/soc-acpi.h>
#include <sound/soc-acpi-intel-match.h>
#include <sound/sof.h>
#include "ops.h"
#include "sof-pci-dev.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_pci_debug;
module_param_named(sof_pci_debug, sof_pci_debug, int, 0444);
MODULE_PARM_DESC(sof_pci_debug, "SOF PCI debug options (0x0 all off)");
static const char *sof_override_tplg_name;
#define SOF_PCI_DISABLE_PM_RUNTIME BIT(0)
static int sof_tplg_cb(const struct dmi_system_id *id)
{
sof_override_tplg_name = id->driver_data;
return 1;
}
static const struct dmi_system_id sof_tplg_table[] = {
{
.callback = sof_tplg_cb,
.matches = {
DMI_MATCH(DMI_PRODUCT_FAMILY, "Google_Volteer"),
DMI_MATCH(DMI_OEM_STRING, "AUDIO-MAX98373_ALC5682I_I2S_UP4"),
},
.driver_data = "sof-tgl-rt5682-ssp0-max98373-ssp2.tplg",
},
{}
};
static const struct dmi_system_id community_key_platforms[] = {
{
.ident = "Up Squared",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "AAEON"),
DMI_MATCH(DMI_BOARD_NAME, "UP-APL01"),
}
},
{
.ident = "Up Extreme",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "AAEON"),
DMI_MATCH(DMI_BOARD_NAME, "UP-WHL01"),
}
},
{
.ident = "Google Chromebooks",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Google"),
}
},
{},
};
const struct dev_pm_ops sof_pci_pm = {
.prepare = snd_sof_prepare,
.complete = snd_sof_complete,
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_pci_pm, SND_SOC_SOF_PCI_DEV);
static void sof_pci_probe_complete(struct device *dev)
{
dev_dbg(dev, "Completing SOF PCI probe");
if (sof_pci_debug & SOF_PCI_DISABLE_PM_RUNTIME)
return;
/* allow runtime_pm */
pm_runtime_set_autosuspend_delay(dev, SND_SOF_SUSPEND_DELAY_MS);
pm_runtime_use_autosuspend(dev);
/*
* runtime pm for pci device is "forbidden" by default.
* so call pm_runtime_allow() to enable it.
*/
pm_runtime_allow(dev);
/* mark last_busy for pm_runtime to make sure not suspend immediately */
pm_runtime_mark_last_busy(dev);
/* follow recommendation in pci-driver.c to decrement usage counter */
pm_runtime_put_noidle(dev);
}
int sof_pci_probe(struct pci_dev *pci, const struct pci_device_id *pci_id)
{
struct device *dev = &pci->dev;
const struct sof_dev_desc *desc =
(const struct sof_dev_desc *)pci_id->driver_data;
struct snd_sof_pdata *sof_pdata;
const struct snd_sof_dsp_ops *ops;
int ret;
dev_dbg(&pci->dev, "PCI DSP detected");
/* get ops for platform */
ops = desc->ops;
if (!ops) {
dev_err(dev, "error: no matching PCI descriptor ops\n");
return -ENODEV;
}
sof_pdata = devm_kzalloc(dev, sizeof(*sof_pdata), GFP_KERNEL);
if (!sof_pdata)
return -ENOMEM;
ret = pcim_enable_device(pci);
if (ret < 0)
return ret;
ret = pci_request_regions(pci, "Audio DSP");
if (ret < 0)
return ret;
sof_pdata->name = pci_name(pci);
sof_pdata->desc = (struct sof_dev_desc *)pci_id->driver_data;
sof_pdata->dev = dev;
sof_pdata->fw_filename = desc->default_fw_filename;
/*
* for platforms using the SOF community key, change the
* default path automatically to pick the right files from the
* linux-firmware tree. This can be overridden with the
* fw_path kernel parameter, e.g. for developers.
*/
/* alternate fw and tplg filenames ? */
if (fw_path) {
sof_pdata->fw_filename_prefix = fw_path;
dev_dbg(dev,
"Module parameter used, changed fw path to %s\n",
sof_pdata->fw_filename_prefix);
} else if (dmi_check_system(community_key_platforms)) {
sof_pdata->fw_filename_prefix =
devm_kasprintf(dev, GFP_KERNEL, "%s/%s",
sof_pdata->desc->default_fw_path,
"community");
dev_dbg(dev,
"Platform uses community key, changed fw path to %s\n",
sof_pdata->fw_filename_prefix);
} else {
sof_pdata->fw_filename_prefix =
sof_pdata->desc->default_fw_path;
}
if (tplg_path)
sof_pdata->tplg_filename_prefix = tplg_path;
else
sof_pdata->tplg_filename_prefix =
sof_pdata->desc->default_tplg_path;
dmi_check_system(sof_tplg_table);
if (sof_override_tplg_name)
sof_pdata->tplg_filename = sof_override_tplg_name;
/* set callback to be called on successful device probe to enable runtime_pm */
sof_pdata->sof_probe_complete = sof_pci_probe_complete;
/* call sof helper for DSP hardware probe */
ret = snd_sof_device_probe(dev, sof_pdata);
if (ret)
pci_release_regions(pci);
return ret;
}
EXPORT_SYMBOL_NS(sof_pci_probe, SND_SOC_SOF_PCI_DEV);
void sof_pci_remove(struct pci_dev *pci)
{
/* call sof helper for DSP hardware remove */
snd_sof_device_remove(&pci->dev);
/* follow recommendation in pci-driver.c to increment usage counter */
if (snd_sof_device_probe_completed(&pci->dev) &&
!(sof_pci_debug & SOF_PCI_DISABLE_PM_RUNTIME))
pm_runtime_get_noresume(&pci->dev);
/* release pci regions and disable device */
pci_release_regions(pci);
}
EXPORT_SYMBOL_NS(sof_pci_remove, SND_SOC_SOF_PCI_DEV);
void sof_pci_shutdown(struct pci_dev *pci)
{
snd_sof_device_shutdown(&pci->dev);
}
EXPORT_SYMBOL_NS(sof_pci_shutdown, SND_SOC_SOF_PCI_DEV);
MODULE_LICENSE("Dual BSD/GPL");
|
