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 int kern_level; 72 struct va_format vaf; 73 char verbose_fmt[] = KERN_DEFAULT "ALSA %s:%d %pV"; 74 #endif 75 76 #ifdef CONFIG_SND_DEBUG 77 if (debug < level) 78 return; 79 #endif 80 81 va_start(args, format); 82 #ifdef CONFIG_SND_VERBOSE_PRINTK 83 vaf.fmt = format; 84 vaf.va = &args; 85 86 kern_level = printk_get_level(format); 87 if (kern_level) { 88 const char *end_of_header = printk_skip_level(format); 89 memcpy(verbose_fmt, format, end_of_header - format); 90 vaf.fmt = end_of_header; 91 } else if (level) 92 memcpy(verbose_fmt, KERN_DEBUG, sizeof(KERN_DEBUG) - 1); 93 printk(verbose_fmt, sanity_file_name(path), line, &vaf); 94 95 #else 96 vprintk(format, args); 97 #endif 98 va_end(args); 99 } 100 EXPORT_SYMBOL_GPL(__snd_printk); 101 #endif 102 103 #ifdef CONFIG_PCI 104 #include <linux/pci.h> 105 /** 106 * snd_pci_quirk_lookup_id - look up a PCI SSID quirk list 107 * @vendor: PCI SSV id 108 * @device: PCI SSD id 109 * @list: quirk list, terminated by a null entry 110 * 111 * Look through the given quirk list and finds a matching entry 112 * with the same PCI SSID. When subdevice is 0, all subdevice 113 * values may match. 114 * 115 * Returns the matched entry pointer, or NULL if nothing matched. 116 */ 117 const struct snd_pci_quirk * 118 snd_pci_quirk_lookup_id(u16 vendor, u16 device, 119 const struct snd_pci_quirk *list) 120 { 121 const struct snd_pci_quirk *q; 122 123 for (q = list; q->subvendor; q++) { 124 if (q->subvendor != vendor) 125 continue; 126 if (!q->subdevice || 127 (device & q->subdevice_mask) == q->subdevice) 128 return q; 129 } 130 return NULL; 131 } 132 EXPORT_SYMBOL(snd_pci_quirk_lookup_id); 133 134 /** 135 * snd_pci_quirk_lookup - look up a PCI SSID quirk list 136 * @pci: pci_dev handle 137 * @list: quirk list, terminated by a null entry 138 * 139 * Look through the given quirk list and finds a matching entry 140 * with the same PCI SSID. When subdevice is 0, all subdevice 141 * values may match. 142 * 143 * Returns the matched entry pointer, or NULL if nothing matched. 144 */ 145 const struct snd_pci_quirk * 146 snd_pci_quirk_lookup(struct pci_dev *pci, const struct snd_pci_quirk *list) 147 { 148 return snd_pci_quirk_lookup_id(pci->subsystem_vendor, 149 pci->subsystem_device, 150 list); 151 } 152 EXPORT_SYMBOL(snd_pci_quirk_lookup); 153 #endif 154