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
38 static int debug = DEFAULT_DEBUG_LEVEL;
39 module_param(debug, int, 0644);
40 MODULE_PARM_DESC(debug, "Debug level (0 = disable)");
41
42 #endif /* CONFIG_SND_DEBUG */
43
release_and_free_resource(struct resource * res)44 void release_and_free_resource(struct resource *res)
45 {
46 if (res) {
47 release_resource(res);
48 kfree(res);
49 }
50 }
51
52 EXPORT_SYMBOL(release_and_free_resource);
53
54 #ifdef CONFIG_SND_VERBOSE_PRINTK
55 /* strip the leading path if the given path is absolute */
sanity_file_name(const char * path)56 static 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)
__snd_printk(unsigned int level,const char * path,int line,const char * format,...)66 void __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 }
100 EXPORT_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 */
117 const struct snd_pci_quirk *
snd_pci_quirk_lookup_id(u16 vendor,u16 device,const struct snd_pci_quirk * list)118 snd_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 }
132 EXPORT_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 */
145 const struct snd_pci_quirk *
snd_pci_quirk_lookup(struct pci_dev * pci,const struct snd_pci_quirk * list)146 snd_pci_quirk_lookup(struct pci_dev *pci, const struct snd_pci_quirk *list)
147 {
148 return snd_pci_quirk_lookup_id(pci->subsystem_vendor,
149 pci->subsystem_device,
150 list);
151 }
152 EXPORT_SYMBOL(snd_pci_quirk_lookup);
153 #endif
154