Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1/*
2 * Misc and compatibility things
3 * Copyright (c) by Jaroslav Kysela <perex@perex.cz>
4 *
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19 *
20 */
21
22#include <linux/init.h>
23#include <linux/export.h>
24#include <linux/moduleparam.h>
25#include <linux/time.h>
26#include <linux/slab.h>
27#include <linux/ioport.h>
28#include <sound/core.h>
29
30#ifdef CONFIG_SND_DEBUG
31
32#ifdef CONFIG_SND_DEBUG_VERBOSE
33#define DEFAULT_DEBUG_LEVEL 2
34#else
35#define DEFAULT_DEBUG_LEVEL 1
36#endif
37
38static int debug = DEFAULT_DEBUG_LEVEL;
39module_param(debug, int, 0644);
40MODULE_PARM_DESC(debug, "Debug level (0 = disable)");
41
42#endif /* CONFIG_SND_DEBUG */
43
44void release_and_free_resource(struct resource *res)
45{
46 if (res) {
47 release_resource(res);
48 kfree(res);
49 }
50}
51
52EXPORT_SYMBOL(release_and_free_resource);
53
54#ifdef CONFIG_SND_VERBOSE_PRINTK
55/* strip the leading path if the given path is absolute */
56static const char *sanity_file_name(const char *path)
57{
58 if (*path == '/')
59 return strrchr(path, '/') + 1;
60 else
61 return path;
62}
63#endif
64
65#if defined(CONFIG_SND_DEBUG) || defined(CONFIG_SND_VERBOSE_PRINTK)
66void __snd_printk(unsigned int level, const char *path, int line,
67 const char *format, ...)
68{
69 va_list args;
70#ifdef CONFIG_SND_VERBOSE_PRINTK
71 struct va_format vaf;
72 char verbose_fmt[] = KERN_DEFAULT "ALSA %s:%d %pV";
73#endif
74
75#ifdef CONFIG_SND_DEBUG
76 if (debug < level)
77 return;
78#endif
79
80 va_start(args, format);
81#ifdef CONFIG_SND_VERBOSE_PRINTK
82 vaf.fmt = format;
83 vaf.va = &args;
84 if (format[0] == '<' && format[2] == '>') {
85 memcpy(verbose_fmt, format, 3);
86 vaf.fmt = format + 3;
87 } else if (level)
88 memcpy(verbose_fmt, KERN_DEBUG, 3);
89 printk(verbose_fmt, sanity_file_name(path), line, &vaf);
90#else
91 vprintk(format, args);
92#endif
93 va_end(args);
94}
95EXPORT_SYMBOL_GPL(__snd_printk);
96#endif
97
98#ifdef CONFIG_PCI
99#include <linux/pci.h>
100/**
101 * snd_pci_quirk_lookup_id - look up a PCI SSID quirk list
102 * @vendor: PCI SSV id
103 * @device: PCI SSD id
104 * @list: quirk list, terminated by a null entry
105 *
106 * Look through the given quirk list and finds a matching entry
107 * with the same PCI SSID. When subdevice is 0, all subdevice
108 * values may match.
109 *
110 * Returns the matched entry pointer, or NULL if nothing matched.
111 */
112const struct snd_pci_quirk *
113snd_pci_quirk_lookup_id(u16 vendor, u16 device,
114 const struct snd_pci_quirk *list)
115{
116 const struct snd_pci_quirk *q;
117
118 for (q = list; q->subvendor; q++) {
119 if (q->subvendor != vendor)
120 continue;
121 if (!q->subdevice ||
122 (device & q->subdevice_mask) == q->subdevice)
123 return q;
124 }
125 return NULL;
126}
127EXPORT_SYMBOL(snd_pci_quirk_lookup_id);
128
129/**
130 * snd_pci_quirk_lookup - look up a PCI SSID quirk list
131 * @pci: pci_dev handle
132 * @list: quirk list, terminated by a null entry
133 *
134 * Look through the given quirk list and finds a matching entry
135 * with the same PCI SSID. When subdevice is 0, all subdevice
136 * values may match.
137 *
138 * Returns the matched entry pointer, or NULL if nothing matched.
139 */
140const struct snd_pci_quirk *
141snd_pci_quirk_lookup(struct pci_dev *pci, const struct snd_pci_quirk *list)
142{
143 return snd_pci_quirk_lookup_id(pci->subsystem_vendor,
144 pci->subsystem_device,
145 list);
146}
147EXPORT_SYMBOL(snd_pci_quirk_lookup);
148#endif