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/time.h> 24 #include <linux/ioport.h> 25 #include <sound/core.h> 26 27 #ifdef CONFIG_SND_DEBUG 28 29 #ifdef CONFIG_SND_DEBUG_VERBOSE 30 #define DEFAULT_DEBUG_LEVEL 2 31 #else 32 #define DEFAULT_DEBUG_LEVEL 1 33 #endif 34 35 static int debug = DEFAULT_DEBUG_LEVEL; 36 module_param(debug, int, 0644); 37 MODULE_PARM_DESC(debug, "Debug level (0 = disable)"); 38 39 #endif /* CONFIG_SND_DEBUG */ 40 41 void release_and_free_resource(struct resource *res) 42 { 43 if (res) { 44 release_resource(res); 45 kfree(res); 46 } 47 } 48 49 EXPORT_SYMBOL(release_and_free_resource); 50 51 #ifdef CONFIG_SND_VERBOSE_PRINTK 52 /* strip the leading path if the given path is absolute */ 53 static const char *sanity_file_name(const char *path) 54 { 55 if (*path == '/') 56 return strrchr(path, '/') + 1; 57 else 58 return path; 59 } 60 61 /* print file and line with a certain printk prefix */ 62 static int print_snd_pfx(unsigned int level, const char *path, int line, 63 const char *format) 64 { 65 const char *file = sanity_file_name(path); 66 char tmp[] = "<0>"; 67 const char *pfx = level ? KERN_DEBUG : KERN_DEFAULT; 68 int ret = 0; 69 70 if (format[0] == '<' && format[2] == '>') { 71 tmp[1] = format[1]; 72 pfx = tmp; 73 ret = 1; 74 } 75 printk("%sALSA %s:%d: ", pfx, file, line); 76 return ret; 77 } 78 #else 79 #define print_snd_pfx(level, path, line, format) 0 80 #endif 81 82 #if defined(CONFIG_SND_DEBUG) || defined(CONFIG_SND_VERBOSE_PRINTK) 83 void __snd_printk(unsigned int level, const char *path, int line, 84 const char *format, ...) 85 { 86 va_list args; 87 88 #ifdef CONFIG_SND_DEBUG 89 if (debug < level) 90 return; 91 #endif 92 va_start(args, format); 93 if (print_snd_pfx(level, path, line, format)) 94 format += 3; /* skip the printk level-prefix */ 95 vprintk(format, args); 96 va_end(args); 97 } 98 EXPORT_SYMBOL_GPL(__snd_printk); 99 #endif 100 101 #ifdef CONFIG_PCI 102 #include <linux/pci.h> 103 /** 104 * snd_pci_quirk_lookup - look up a PCI SSID quirk list 105 * @pci: pci_dev handle 106 * @list: quirk list, terminated by a null entry 107 * 108 * Look through the given quirk list and finds a matching entry 109 * with the same PCI SSID. When subdevice is 0, all subdevice 110 * values may match. 111 * 112 * Returns the matched entry pointer, or NULL if nothing matched. 113 */ 114 const struct snd_pci_quirk * 115 snd_pci_quirk_lookup(struct pci_dev *pci, const struct snd_pci_quirk *list) 116 { 117 const struct snd_pci_quirk *q; 118 119 for (q = list; q->subvendor; q++) { 120 if (q->subvendor != pci->subsystem_vendor) 121 continue; 122 if (!q->subdevice || 123 (pci->subsystem_device & q->subdevice_mask) == q->subdevice) 124 return q; 125 } 126 return NULL; 127 } 128 EXPORT_SYMBOL(snd_pci_quirk_lookup); 129 #endif 130