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	int kern_level;
72	struct va_format vaf;
73	char verbose_fmt[] = KERN_DEFAULT "ALSA %s:%d %pV";
74#endif
75
76#ifdef CONFIG_SND_DEBUG
77	if (debug < level)
78		return;
79#endif
80
81	va_start(args, format);
82#ifdef CONFIG_SND_VERBOSE_PRINTK
83	vaf.fmt = format;
84	vaf.va = &args;
85
86	kern_level = printk_get_level(format);
87	if (kern_level) {
88		const char *end_of_header = printk_skip_level(format);
89		memcpy(verbose_fmt, format, end_of_header - format);
90		vaf.fmt = end_of_header;
91	} else if (level)
92		memcpy(verbose_fmt, KERN_DEBUG, sizeof(KERN_DEBUG) - 1);
93	printk(verbose_fmt, sanity_file_name(path), line, &vaf);
94
95#else
96	vprintk(format, args);
97#endif
98	va_end(args);
99}
100EXPORT_SYMBOL_GPL(__snd_printk);
101#endif
102
103#ifdef CONFIG_PCI
104#include <linux/pci.h>
105/**
106 * snd_pci_quirk_lookup_id - look up a PCI SSID quirk list
107 * @vendor: PCI SSV id
108 * @device: PCI SSD id
109 * @list: quirk list, terminated by a null entry
110 *
111 * Look through the given quirk list and finds a matching entry
112 * with the same PCI SSID.  When subdevice is 0, all subdevice
113 * values may match.
114 *
115 * Returns the matched entry pointer, or NULL if nothing matched.
116 */
117const struct snd_pci_quirk *
118snd_pci_quirk_lookup_id(u16 vendor, u16 device,
119			const struct snd_pci_quirk *list)
120{
121	const struct snd_pci_quirk *q;
122
123	for (q = list; q->subvendor; q++) {
124		if (q->subvendor != vendor)
125			continue;
126		if (!q->subdevice ||
127		    (device & q->subdevice_mask) == q->subdevice)
128			return q;
129	}
130	return NULL;
131}
132EXPORT_SYMBOL(snd_pci_quirk_lookup_id);
133
134/**
135 * snd_pci_quirk_lookup - look up a PCI SSID quirk list
136 * @pci: pci_dev handle
137 * @list: quirk list, terminated by a null entry
138 *
139 * Look through the given quirk list and finds a matching entry
140 * with the same PCI SSID.  When subdevice is 0, all subdevice
141 * values may match.
142 *
143 * Returns the matched entry pointer, or NULL if nothing matched.
144 */
145const struct snd_pci_quirk *
146snd_pci_quirk_lookup(struct pci_dev *pci, const struct snd_pci_quirk *list)
147{
148	if (!pci)
149		return NULL;
150	return snd_pci_quirk_lookup_id(pci->subsystem_vendor,
151				       pci->subsystem_device,
152				       list);
153}
154EXPORT_SYMBOL(snd_pci_quirk_lookup);
155#endif
156