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 #endif 62 63 #if defined(CONFIG_SND_DEBUG) || defined(CONFIG_SND_VERBOSE_PRINTK) 64 void __snd_printk(unsigned int level, const char *path, int line, 65 const char *format, ...) 66 { 67 va_list args; 68 #ifdef CONFIG_SND_VERBOSE_PRINTK 69 struct va_format vaf; 70 char verbose_fmt[] = KERN_DEFAULT "ALSA %s:%d %pV"; 71 #endif 72 73 #ifdef CONFIG_SND_DEBUG 74 if (debug < level) 75 return; 76 #endif 77 78 va_start(args, format); 79 #ifdef CONFIG_SND_VERBOSE_PRINTK 80 vaf.fmt = format; 81 vaf.va = &args; 82 if (format[0] == '<' && format[2] == '>') { 83 memcpy(verbose_fmt, format, 3); 84 vaf.fmt = format + 3; 85 } else if (level) 86 memcpy(verbose_fmt, KERN_DEBUG, 3); 87 printk(verbose_fmt, sanity_file_name(path), line, &vaf); 88 #else 89 vprintk(format, args); 90 #endif 91 va_end(args); 92 } 93 EXPORT_SYMBOL_GPL(__snd_printk); 94 #endif 95 96 #ifdef CONFIG_PCI 97 #include <linux/pci.h> 98 /** 99 * snd_pci_quirk_lookup_id - look up a PCI SSID quirk list 100 * @vendor: PCI SSV id 101 * @device: PCI SSD id 102 * @list: quirk list, terminated by a null entry 103 * 104 * Look through the given quirk list and finds a matching entry 105 * with the same PCI SSID. When subdevice is 0, all subdevice 106 * values may match. 107 * 108 * Returns the matched entry pointer, or NULL if nothing matched. 109 */ 110 const struct snd_pci_quirk * 111 snd_pci_quirk_lookup_id(u16 vendor, u16 device, 112 const struct snd_pci_quirk *list) 113 { 114 const struct snd_pci_quirk *q; 115 116 for (q = list; q->subvendor; q++) { 117 if (q->subvendor != vendor) 118 continue; 119 if (!q->subdevice || 120 (device & q->subdevice_mask) == q->subdevice) 121 return q; 122 } 123 return NULL; 124 } 125 EXPORT_SYMBOL(snd_pci_quirk_lookup_id); 126 127 /** 128 * snd_pci_quirk_lookup - look up a PCI SSID quirk list 129 * @pci: pci_dev handle 130 * @list: quirk list, terminated by a null entry 131 * 132 * Look through the given quirk list and finds a matching entry 133 * with the same PCI SSID. When subdevice is 0, all subdevice 134 * values may match. 135 * 136 * Returns the matched entry pointer, or NULL if nothing matched. 137 */ 138 const struct snd_pci_quirk * 139 snd_pci_quirk_lookup(struct pci_dev *pci, const struct snd_pci_quirk *list) 140 { 141 return snd_pci_quirk_lookup_id(pci->subsystem_vendor, 142 pci->subsystem_device, 143 list); 144 } 145 EXPORT_SYMBOL(snd_pci_quirk_lookup); 146 #endif 147