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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * Misc and compatibility things
Jaroslav Kyselac1017a42007-10-15 09:50:19 +02003 * Copyright (c) by Jaroslav Kysela <perex@perex.cz>
Linus Torvalds1da177e2005-04-16 15:20:36 -07004 *
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
Linus Torvalds1da177e2005-04-16 15:20:36 -070022#include <linux/init.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070023#include <linux/time.h>
Takashi Iwaib1d57762005-10-10 11:56:31 +020024#include <linux/ioport.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070025#include <sound/core.h>
26
Takashi Iwai36ce99c2009-08-27 16:45:07 +020027#ifdef CONFIG_SND_DEBUG
28
29#ifdef CONFIG_SND_DEBUG_VERBOSE
30#define DEFAULT_DEBUG_LEVEL 2
31#else
32#define DEFAULT_DEBUG_LEVEL 1
33#endif
34
35static int debug = DEFAULT_DEBUG_LEVEL;
36module_param(debug, int, 0644);
37MODULE_PARM_DESC(debug, "Debug level (0 = disable)");
38
39#endif /* CONFIG_SND_DEBUG */
40
Takashi Iwaib1d57762005-10-10 11:56:31 +020041void release_and_free_resource(struct resource *res)
42{
43 if (res) {
44 release_resource(res);
Takashi Iwaie38e0cf2005-10-10 11:59:52 +020045 kfree(res);
Takashi Iwaib1d57762005-10-10 11:56:31 +020046 }
47}
48
Takashi Iwaic0d3fb32006-04-28 15:13:39 +020049EXPORT_SYMBOL(release_and_free_resource);
50
Linus Torvalds1da177e2005-04-16 15:20:36 -070051#ifdef CONFIG_SND_VERBOSE_PRINTK
Takashi Iwai36ce99c2009-08-27 16:45:07 +020052/* strip the leading path if the given path is absolute */
Takashi Iwai1b0053a2009-08-27 12:34:54 +020053static const char *sanity_file_name(const char *path)
Linus Torvalds1da177e2005-04-16 15:20:36 -070054{
Takashi Iwai1b0053a2009-08-27 12:34:54 +020055 if (*path == '/')
56 return strrchr(path, '/') + 1;
57 else
58 return path;
59}
60
Takashi Iwai36ce99c2009-08-27 16:45:07 +020061/* print file and line with a certain printk prefix */
62static int print_snd_pfx(unsigned int level, const char *path, int line,
63 const char *format)
Takashi Iwai1b0053a2009-08-27 12:34:54 +020064{
65 const char *file = sanity_file_name(path);
Takashi Iwai36ce99c2009-08-27 16:45:07 +020066 char tmp[] = "<0>";
67 const char *pfx = level ? KERN_DEBUG : KERN_DEFAULT;
68 int ret = 0;
Takashi Iwaic0d3fb32006-04-28 15:13:39 +020069
Takashi Iwai36ce99c2009-08-27 16:45:07 +020070 if (format[0] == '<' && format[2] == '>') {
71 tmp[1] = format[1];
72 pfx = tmp;
73 ret = 1;
74 }
75 printk("%sALSA %s:%d: ", pfx, file, line);
76 return ret;
77}
78#else
79#define print_snd_pfx(level, path, line, format) 0
Linus Torvalds1da177e2005-04-16 15:20:36 -070080#endif
81
Takashi Iwai36ce99c2009-08-27 16:45:07 +020082#if defined(CONFIG_SND_DEBUG) || defined(CONFIG_SND_VERBOSE_PRINTK)
83void __snd_printk(unsigned int level, const char *path, int line,
84 const char *format, ...)
Linus Torvalds1da177e2005-04-16 15:20:36 -070085{
86 va_list args;
87
Takashi Iwai36ce99c2009-08-27 16:45:07 +020088#ifdef CONFIG_SND_DEBUG
89 if (debug < level)
90 return;
91#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -070092 va_start(args, format);
Takashi Iwai36ce99c2009-08-27 16:45:07 +020093 if (print_snd_pfx(level, path, line, format))
94 format += 3; /* skip the printk level-prefix */
Linus Torvalds1da177e2005-04-16 15:20:36 -070095 vprintk(format, args);
96 va_end(args);
Linus Torvalds1da177e2005-04-16 15:20:36 -070097}
Takashi Iwai36ce99c2009-08-27 16:45:07 +020098EXPORT_SYMBOL_GPL(__snd_printk);
Linus Torvalds1da177e2005-04-16 15:20:36 -070099#endif
Takashi Iwaid9ea4722006-11-24 15:34:06 +0100100
101#ifdef CONFIG_PCI
102#include <linux/pci.h>
103/**
104 * snd_pci_quirk_lookup - look up a PCI SSID quirk list
105 * @pci: pci_dev handle
106 * @list: quirk list, terminated by a null entry
107 *
108 * Look through the given quirk list and finds a matching entry
109 * with the same PCI SSID. When subdevice is 0, all subdevice
110 * values may match.
111 *
112 * Returns the matched entry pointer, or NULL if nothing matched.
113 */
114const struct snd_pci_quirk *
115snd_pci_quirk_lookup(struct pci_dev *pci, const struct snd_pci_quirk *list)
116{
117 const struct snd_pci_quirk *q;
118
Takashi Iwai8bd4bb72009-01-30 17:27:45 +0100119 for (q = list; q->subvendor; q++) {
120 if (q->subvendor != pci->subsystem_vendor)
121 continue;
122 if (!q->subdevice ||
123 (pci->subsystem_device & q->subdevice_mask) == q->subdevice)
Takashi Iwaid9ea4722006-11-24 15:34:06 +0100124 return q;
Takashi Iwai8bd4bb72009-01-30 17:27:45 +0100125 }
Takashi Iwaid9ea4722006-11-24 15:34:06 +0100126 return NULL;
127}
Takashi Iwaid9ea4722006-11-24 15:34:06 +0100128EXPORT_SYMBOL(snd_pci_quirk_lookup);
129#endif