2 * Misc and compatibility things
3 * Copyright (c) by Jaroslav Kysela <perex@perex.cz>
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.
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.
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
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>
30 #ifdef CONFIG_SND_DEBUG
32 #ifdef CONFIG_SND_DEBUG_VERBOSE
33 #define DEFAULT_DEBUG_LEVEL 2
35 #define DEFAULT_DEBUG_LEVEL 1
38 static int debug = DEFAULT_DEBUG_LEVEL;
39 module_param(debug, int, 0644);
40 MODULE_PARM_DESC(debug, "Debug level (0 = disable)");
42 #endif /* CONFIG_SND_DEBUG */
44 void release_and_free_resource(struct resource *res)
47 release_resource(res);
51 EXPORT_SYMBOL(release_and_free_resource);
53 #ifdef CONFIG_SND_VERBOSE_PRINTK
54 /* strip the leading path if the given path is absolute */
55 static const char *sanity_file_name(const char *path)
58 return strrchr(path, '/') + 1;
64 #if defined(CONFIG_SND_DEBUG) || defined(CONFIG_SND_VERBOSE_PRINTK)
65 void __snd_printk(unsigned int level, const char *path, int line,
66 const char *format, ...)
69 #ifdef CONFIG_SND_VERBOSE_PRINTK
72 char verbose_fmt[] = KERN_DEFAULT "ALSA %s:%d %pV";
73 bool level_found = false;
76 #ifdef CONFIG_SND_DEBUG
81 va_start(args, format);
82 #ifdef CONFIG_SND_VERBOSE_PRINTK
86 while ((kern_level = printk_get_level(vaf.fmt)) != 0) {
87 const char *end_of_header = printk_skip_level(vaf.fmt);
89 /* Ignore KERN_CONT. We print filename:line for each piece. */
90 if (kern_level >= '0' && kern_level <= '7') {
91 memcpy(verbose_fmt, vaf.fmt, end_of_header - vaf.fmt);
95 vaf.fmt = end_of_header;
98 if (!level_found && level)
99 memcpy(verbose_fmt, KERN_DEBUG, sizeof(KERN_DEBUG) - 1);
101 printk(verbose_fmt, sanity_file_name(path), line, &vaf);
103 vprintk(format, args);
107 EXPORT_SYMBOL_GPL(__snd_printk);
111 #include <linux/pci.h>
113 * snd_pci_quirk_lookup_id - look up a PCI SSID quirk list
114 * @vendor: PCI SSV id
115 * @device: PCI SSD id
116 * @list: quirk list, terminated by a null entry
118 * Look through the given quirk list and finds a matching entry
119 * with the same PCI SSID. When subdevice is 0, all subdevice
122 * Returns the matched entry pointer, or NULL if nothing matched.
124 const struct snd_pci_quirk *
125 snd_pci_quirk_lookup_id(u16 vendor, u16 device,
126 const struct snd_pci_quirk *list)
128 const struct snd_pci_quirk *q;
130 for (q = list; q->subvendor; q++) {
131 if (q->subvendor != vendor)
134 (device & q->subdevice_mask) == q->subdevice)
139 EXPORT_SYMBOL(snd_pci_quirk_lookup_id);
142 * snd_pci_quirk_lookup - look up a PCI SSID quirk list
143 * @pci: pci_dev handle
144 * @list: quirk list, terminated by a null entry
146 * Look through the given quirk list and finds a matching entry
147 * with the same PCI SSID. When subdevice is 0, all subdevice
150 * Returns the matched entry pointer, or NULL if nothing matched.
152 const struct snd_pci_quirk *
153 snd_pci_quirk_lookup(struct pci_dev *pci, const struct snd_pci_quirk *list)
157 return snd_pci_quirk_lookup_id(pci->subsystem_vendor,
158 pci->subsystem_device,
161 EXPORT_SYMBOL(snd_pci_quirk_lookup);