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sound/core/misc.c 3.79 KB
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
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  /*
   *  Misc and compatibility things
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   *  Copyright (c) by Jaroslav Kysela <perex@perex.cz>
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   *
   *
   *   This program is free software; you can redistribute it and/or modify
   *   it under the terms of the GNU General Public License as published by
   *   the Free Software Foundation; either version 2 of the License, or
   *   (at your option) any later version.
   *
   *   This program is distributed in the hope that it will be useful,
   *   but WITHOUT ANY WARRANTY; without even the implied warranty of
   *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   *   GNU General Public License for more details.
   *
   *   You should have received a copy of the GNU General Public License
   *   along with this program; if not, write to the Free Software
   *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
   *
   */
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2
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  #include <linux/init.h>
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  #include <linux/export.h>
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  #include <linux/moduleparam.h>
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  #include <linux/time.h>
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  #include <linux/slab.h>
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  #include <linux/ioport.h>
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  #include <sound/core.h>
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  #ifdef CONFIG_SND_DEBUG
  
  #ifdef CONFIG_SND_DEBUG_VERBOSE
  #define DEFAULT_DEBUG_LEVEL	2
  #else
  #define DEFAULT_DEBUG_LEVEL	1
  #endif
  
  static int debug = DEFAULT_DEBUG_LEVEL;
  module_param(debug, int, 0644);
  MODULE_PARM_DESC(debug, "Debug level (0 = disable)");
  
  #endif /* CONFIG_SND_DEBUG */
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  void release_and_free_resource(struct resource *res)
  {
  	if (res) {
  		release_resource(res);
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  		kfree(res);
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  	}
  }
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  EXPORT_SYMBOL(release_and_free_resource);
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  #ifdef CONFIG_SND_VERBOSE_PRINTK
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  /* strip the leading path if the given path is absolute */
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  static const char *sanity_file_name(const char *path)
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  {
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  	if (*path == '/')
  		return strrchr(path, '/') + 1;
  	else
  		return path;
  }
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  #endif
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  #if defined(CONFIG_SND_DEBUG) || defined(CONFIG_SND_VERBOSE_PRINTK)
  void __snd_printk(unsigned int level, const char *path, int line,
  		  const char *format, ...)
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  {
  	va_list args;
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  #ifdef CONFIG_SND_VERBOSE_PRINTK
  	struct va_format vaf;
  	char verbose_fmt[] = KERN_DEFAULT "ALSA %s:%d %pV";
  #endif
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  #ifdef CONFIG_SND_DEBUG	
  	if (debug < level)
  		return;
  #endif
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  	va_start(args, format);
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  #ifdef CONFIG_SND_VERBOSE_PRINTK
  	vaf.fmt = format;
  	vaf.va = &args;
  	if (format[0] == '<' && format[2] == '>') {
  		memcpy(verbose_fmt, format, 3);
  		vaf.fmt = format + 3;
  	} else if (level)
  		memcpy(verbose_fmt, KERN_DEBUG, 3);
  	printk(verbose_fmt, sanity_file_name(path), line, &vaf);
  #else
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  	vprintk(format, args);
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  #endif
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  	va_end(args);
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  }
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  EXPORT_SYMBOL_GPL(__snd_printk);
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  #endif
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  #ifdef CONFIG_PCI
  #include <linux/pci.h>
  /**
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   * snd_pci_quirk_lookup_id - look up a PCI SSID quirk list
   * @vendor: PCI SSV id
   * @device: PCI SSD id
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   * @list: quirk list, terminated by a null entry
   *
   * Look through the given quirk list and finds a matching entry
   * with the same PCI SSID.  When subdevice is 0, all subdevice
   * values may match.
   *
   * Returns the matched entry pointer, or NULL if nothing matched.
   */
  const struct snd_pci_quirk *
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  snd_pci_quirk_lookup_id(u16 vendor, u16 device,
  			const struct snd_pci_quirk *list)
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  {
  	const struct snd_pci_quirk *q;
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  	for (q = list; q->subvendor; q++) {
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  		if (q->subvendor != vendor)
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  			continue;
  		if (!q->subdevice ||
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  		    (device & q->subdevice_mask) == q->subdevice)
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  			return q;
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  	}
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  	return NULL;
  }
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  EXPORT_SYMBOL(snd_pci_quirk_lookup_id);
  
  /**
   * snd_pci_quirk_lookup - look up a PCI SSID quirk list
   * @pci: pci_dev handle
   * @list: quirk list, terminated by a null entry
   *
   * Look through the given quirk list and finds a matching entry
   * with the same PCI SSID.  When subdevice is 0, all subdevice
   * values may match.
   *
   * Returns the matched entry pointer, or NULL if nothing matched.
   */
  const struct snd_pci_quirk *
  snd_pci_quirk_lookup(struct pci_dev *pci, const struct snd_pci_quirk *list)
  {
  	return snd_pci_quirk_lookup_id(pci->subsystem_vendor,
  				       pci->subsystem_device,
  				       list);
  }
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  EXPORT_SYMBOL(snd_pci_quirk_lookup);
  #endif