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/slab.h> 25 #include <linux/ioport.h> 26 #include <sound/core.h> 27 28 #ifdef CONFIG_SND_DEBUG 29 30 #ifdef CONFIG_SND_DEBUG_VERBOSE 31 #define DEFAULT_DEBUG_LEVEL 2 32 #else 33 #define DEFAULT_DEBUG_LEVEL 1 34 #endif 35 36 static int debug = DEFAULT_DEBUG_LEVEL; 37 module_param(debug, int, 0644); 38 MODULE_PARM_DESC(debug, "Debug level (0 = disable)"); 39 40 #endif /* CONFIG_SND_DEBUG */ 41 42 void release_and_free_resource(struct resource *res) 43 { 44 if (res) { 45 release_resource(res); 46 kfree(res); 47 } 48 } 49 50 EXPORT_SYMBOL(release_and_free_resource); 51 52 #ifdef CONFIG_SND_VERBOSE_PRINTK 53 /* strip the leading path if the given path is absolute */ 54 static const char *sanity_file_name(const char *path) 55 { 56 if (*path == '/') 57 return strrchr(path, '/') + 1; 58 else 59 return path; 60 } 61 62 /* print file and line with a certain printk prefix */ 63 static int print_snd_pfx(unsigned int level, const char *path, int line, 64 const char *format) 65 { 66 const char *file = sanity_file_name(path); 67 char tmp[] = "<0>"; 68 const char *pfx = level ? KERN_DEBUG : KERN_DEFAULT; 69 int ret = 0; 70 71 if (format[0] == '<' && format[2] == '>') { 72 tmp[1] = format[1]; 73 pfx = tmp; 74 ret = 1; 75 } 76 printk("%sALSA %s:%d: ", pfx, file, line); 77 return ret; 78 } 79 #else 80 #define print_snd_pfx(level, path, line, format) 0 81 #endif 82 83 #if defined(CONFIG_SND_DEBUG) || defined(CONFIG_SND_VERBOSE_PRINTK) 84 void __snd_printk(unsigned int level, const char *path, int line, 85 const char *format, ...) 86 { 87 va_list args; 88 89 #ifdef CONFIG_SND_DEBUG 90 if (debug < level) 91 return; 92 #endif 93 va_start(args, format); 94 if (print_snd_pfx(level, path, line, format)) 95 format += 3; /* skip the printk level-prefix */ 96 vprintk(format, args); 97 va_end(args); 98 } 99 EXPORT_SYMBOL_GPL(__snd_printk); 100 #endif 101 102 #ifdef CONFIG_PCI 103 #include <linux/pci.h> 104 /** 105 * snd_pci_quirk_lookup_id - look up a PCI SSID quirk list 106 * @vendor: PCI SSV id 107 * @device: PCI SSD id 108 * @list: quirk list, terminated by a null entry 109 * 110 * Look through the given quirk list and finds a matching entry 111 * with the same PCI SSID. When subdevice is 0, all subdevice 112 * values may match. 113 * 114 * Returns the matched entry pointer, or NULL if nothing matched. 115 */ 116 const struct snd_pci_quirk * 117 snd_pci_quirk_lookup_id(u16 vendor, u16 device, 118 const struct snd_pci_quirk *list) 119 { 120 const struct snd_pci_quirk *q; 121 122 for (q = list; q->subvendor; q++) { 123 if (q->subvendor != vendor) 124 continue; 125 if (!q->subdevice || 126 (device & q->subdevice_mask) == q->subdevice) 127 return q; 128 } 129 return NULL; 130 } 131 EXPORT_SYMBOL(snd_pci_quirk_lookup_id); 132 133 /** 134 * snd_pci_quirk_lookup - look up a PCI SSID quirk list 135 * @pci: pci_dev handle 136 * @list: quirk list, terminated by a null entry 137 * 138 * Look through the given quirk list and finds a matching entry 139 * with the same PCI SSID. When subdevice is 0, all subdevice 140 * values may match. 141 * 142 * Returns the matched entry pointer, or NULL if nothing matched. 143 */ 144 const struct snd_pci_quirk * 145 snd_pci_quirk_lookup(struct pci_dev *pci, const struct snd_pci_quirk *list) 146 { 147 return snd_pci_quirk_lookup_id(pci->subsystem_vendor, 148 pci->subsystem_device, 149 list); 150 } 151 EXPORT_SYMBOL(snd_pci_quirk_lookup); 152 #endif 153