Commit | Line | Data |
---|---|---|
1a59d1b8 | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
1da177e4 LT |
2 | /* |
3 | * Misc and compatibility things | |
c1017a4c | 4 | * Copyright (c) by Jaroslav Kysela <perex@perex.cz> |
1da177e4 LT |
5 | */ |
6 | ||
1da177e4 | 7 | #include <linux/init.h> |
d81a6d71 | 8 | #include <linux/export.h> |
31623caa | 9 | #include <linux/moduleparam.h> |
1da177e4 | 10 | #include <linux/time.h> |
5a0e3ad6 | 11 | #include <linux/slab.h> |
b1d5776d | 12 | #include <linux/ioport.h> |
1da177e4 LT |
13 | #include <sound/core.h> |
14 | ||
36ce99c1 TI |
15 | #ifdef CONFIG_SND_DEBUG |
16 | ||
17 | #ifdef CONFIG_SND_DEBUG_VERBOSE | |
18 | #define DEFAULT_DEBUG_LEVEL 2 | |
19 | #else | |
20 | #define DEFAULT_DEBUG_LEVEL 1 | |
21 | #endif | |
22 | ||
23 | static int debug = DEFAULT_DEBUG_LEVEL; | |
24 | module_param(debug, int, 0644); | |
25 | MODULE_PARM_DESC(debug, "Debug level (0 = disable)"); | |
26 | ||
27 | #endif /* CONFIG_SND_DEBUG */ | |
28 | ||
b1d5776d TI |
29 | void release_and_free_resource(struct resource *res) |
30 | { | |
31 | if (res) { | |
32 | release_resource(res); | |
e38e0cfa | 33 | kfree(res); |
b1d5776d TI |
34 | } |
35 | } | |
c0d3fb39 TI |
36 | EXPORT_SYMBOL(release_and_free_resource); |
37 | ||
1da177e4 | 38 | #ifdef CONFIG_SND_VERBOSE_PRINTK |
36ce99c1 | 39 | /* strip the leading path if the given path is absolute */ |
1b0053a0 | 40 | static const char *sanity_file_name(const char *path) |
1da177e4 | 41 | { |
1b0053a0 TI |
42 | if (*path == '/') |
43 | return strrchr(path, '/') + 1; | |
44 | else | |
45 | return path; | |
46 | } | |
1da177e4 LT |
47 | #endif |
48 | ||
36ce99c1 TI |
49 | #if defined(CONFIG_SND_DEBUG) || defined(CONFIG_SND_VERBOSE_PRINTK) |
50 | void __snd_printk(unsigned int level, const char *path, int line, | |
51 | const char *format, ...) | |
1da177e4 LT |
52 | { |
53 | va_list args; | |
890ee02a | 54 | #ifdef CONFIG_SND_VERBOSE_PRINTK |
b778b3f2 | 55 | int kern_level; |
890ee02a TI |
56 | struct va_format vaf; |
57 | char verbose_fmt[] = KERN_DEFAULT "ALSA %s:%d %pV"; | |
0a4824bf | 58 | bool level_found = false; |
890ee02a TI |
59 | #endif |
60 | ||
7913a499 | 61 | #ifdef CONFIG_SND_DEBUG |
36ce99c1 TI |
62 | if (debug < level) |
63 | return; | |
64 | #endif | |
890ee02a | 65 | |
1da177e4 | 66 | va_start(args, format); |
890ee02a TI |
67 | #ifdef CONFIG_SND_VERBOSE_PRINTK |
68 | vaf.fmt = format; | |
69 | vaf.va = &args; | |
b778b3f2 | 70 | |
0a4824bf PM |
71 | while ((kern_level = printk_get_level(vaf.fmt)) != 0) { |
72 | const char *end_of_header = printk_skip_level(vaf.fmt); | |
73 | ||
74 | /* Ignore KERN_CONT. We print filename:line for each piece. */ | |
75 | if (kern_level >= '0' && kern_level <= '7') { | |
76 | memcpy(verbose_fmt, vaf.fmt, end_of_header - vaf.fmt); | |
77 | level_found = true; | |
78 | } | |
79 | ||
b778b3f2 | 80 | vaf.fmt = end_of_header; |
0a4824bf PM |
81 | } |
82 | ||
83 | if (!level_found && level) | |
b778b3f2 | 84 | memcpy(verbose_fmt, KERN_DEBUG, sizeof(KERN_DEBUG) - 1); |
b778b3f2 | 85 | |
0a4824bf | 86 | printk(verbose_fmt, sanity_file_name(path), line, &vaf); |
890ee02a | 87 | #else |
1da177e4 | 88 | vprintk(format, args); |
890ee02a | 89 | #endif |
1da177e4 | 90 | va_end(args); |
1da177e4 | 91 | } |
36ce99c1 | 92 | EXPORT_SYMBOL_GPL(__snd_printk); |
1da177e4 | 93 | #endif |
d9ea472c TI |
94 | |
95 | #ifdef CONFIG_PCI | |
96 | #include <linux/pci.h> | |
97 | /** | |
d1458279 TI |
98 | * snd_pci_quirk_lookup_id - look up a PCI SSID quirk list |
99 | * @vendor: PCI SSV id | |
100 | * @device: PCI SSD id | |
d9ea472c TI |
101 | * @list: quirk list, terminated by a null entry |
102 | * | |
103 | * Look through the given quirk list and finds a matching entry | |
104 | * with the same PCI SSID. When subdevice is 0, all subdevice | |
105 | * values may match. | |
106 | * | |
107 | * Returns the matched entry pointer, or NULL if nothing matched. | |
108 | */ | |
109 | const struct snd_pci_quirk * | |
d1458279 TI |
110 | snd_pci_quirk_lookup_id(u16 vendor, u16 device, |
111 | const struct snd_pci_quirk *list) | |
d9ea472c TI |
112 | { |
113 | const struct snd_pci_quirk *q; | |
114 | ||
8bd4bb7a | 115 | for (q = list; q->subvendor; q++) { |
d1458279 | 116 | if (q->subvendor != vendor) |
8bd4bb7a TI |
117 | continue; |
118 | if (!q->subdevice || | |
d1458279 | 119 | (device & q->subdevice_mask) == q->subdevice) |
d9ea472c | 120 | return q; |
8bd4bb7a | 121 | } |
d9ea472c TI |
122 | return NULL; |
123 | } | |
d1458279 TI |
124 | EXPORT_SYMBOL(snd_pci_quirk_lookup_id); |
125 | ||
126 | /** | |
127 | * snd_pci_quirk_lookup - look up a PCI SSID quirk list | |
128 | * @pci: pci_dev handle | |
129 | * @list: quirk list, terminated by a null entry | |
130 | * | |
131 | * Look through the given quirk list and finds a matching entry | |
132 | * with the same PCI SSID. When subdevice is 0, all subdevice | |
133 | * values may match. | |
134 | * | |
135 | * Returns the matched entry pointer, or NULL if nothing matched. | |
136 | */ | |
137 | const struct snd_pci_quirk * | |
138 | snd_pci_quirk_lookup(struct pci_dev *pci, const struct snd_pci_quirk *list) | |
139 | { | |
e5b50ada TI |
140 | if (!pci) |
141 | return NULL; | |
d1458279 TI |
142 | return snd_pci_quirk_lookup_id(pci->subsystem_vendor, |
143 | pci->subsystem_device, | |
144 | list); | |
145 | } | |
d9ea472c TI |
146 | EXPORT_SYMBOL(snd_pci_quirk_lookup); |
147 | #endif |