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 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 */ 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) 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 struct va_format vaf; 72 char verbose_fmt[] = KERN_DEFAULT "ALSA %s:%d %pV"; 73 #endif 74 75 #ifdef CONFIG_SND_DEBUG 76 if (debug < level) 77 return; 78 #endif 79 80 va_start(args, format); 81 #ifdef CONFIG_SND_VERBOSE_PRINTK 82 vaf.fmt = format; 83 vaf.va = &args; 84 if (format[0] == '<' && format[2] == '>') { 85 memcpy(verbose_fmt, format, 3); 86 vaf.fmt = format + 3; 87 } else if (level) 88 memcpy(verbose_fmt, KERN_DEBUG, 3); 89 printk(verbose_fmt, sanity_file_name(path), line, &vaf); 90 #else 91 vprintk(format, args); 92 #endif 93 va_end(args); 94 } 95 EXPORT_SYMBOL_GPL(__snd_printk); 96 #endif 97 98 #ifdef CONFIG_PCI 99 #include <linux/pci.h> 100 /** 101 * snd_pci_quirk_lookup_id - look up a PCI SSID quirk list 102 * @vendor: PCI SSV id 103 * @device: PCI SSD id 104 * @list: quirk list, terminated by a null entry 105 * 106 * Look through the given quirk list and finds a matching entry 107 * with the same PCI SSID. When subdevice is 0, all subdevice 108 * values may match. 109 * 110 * Returns the matched entry pointer, or NULL if nothing matched. 111 */ 112 const struct snd_pci_quirk * 113 snd_pci_quirk_lookup_id(u16 vendor, u16 device, 114 const struct snd_pci_quirk *list) 115 { 116 const struct snd_pci_quirk *q; 117 118 for (q = list; q->subvendor; q++) { 119 if (q->subvendor != vendor) 120 continue; 121 if (!q->subdevice || 122 (device & q->subdevice_mask) == q->subdevice) 123 return q; 124 } 125 return NULL; 126 } 127 EXPORT_SYMBOL(snd_pci_quirk_lookup_id); 128 129 /** 130 * snd_pci_quirk_lookup - look up a PCI SSID quirk list 131 * @pci: pci_dev handle 132 * @list: quirk list, terminated by a null entry 133 * 134 * Look through the given quirk list and finds a matching entry 135 * with the same PCI SSID. When subdevice is 0, all subdevice 136 * values may match. 137 * 138 * Returns the matched entry pointer, or NULL if nothing matched. 139 */ 140 const struct snd_pci_quirk * 141 snd_pci_quirk_lookup(struct pci_dev *pci, const struct snd_pci_quirk *list) 142 { 143 return snd_pci_quirk_lookup_id(pci->subsystem_vendor, 144 pci->subsystem_device, 145 list); 146 } 147 EXPORT_SYMBOL(snd_pci_quirk_lookup); 148 #endif 149