text: /*
   *  Information interface for ALSA driver
   *  Copyright (c) by Jaroslav Kysela <perex@suse.cz>
   *
   *
   *   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
   *
   */
  
  #include <sound/driver.h>
  #include <linux/slab.h>
  #include <linux/time.h>
  #include <sound/core.h>
  #include <sound/minors.h>
  #include <sound/info.h>
  #include <sound/version.h>
  #include <linux/utsname.h>
  
  #if defined(CONFIG_SND_OSSEMUL) && defined(CONFIG_PROC_FS)
  
  /*
   *  OSS compatible part
   */
  
  static DECLARE_MUTEX(strings);
  static char *snd_sndstat_strings[SNDRV_CARDS][SNDRV_OSS_INFO_DEV_COUNT];
  static snd_info_entry_t *snd_sndstat_proc_entry;
  
  int snd_oss_info_register(int dev, int num, char *string)
  {
  	char *x;
  
  	snd_assert(dev >= 0 && dev < SNDRV_OSS_INFO_DEV_COUNT, return -ENXIO);
  	snd_assert(num >= 0 && num < SNDRV_CARDS, return -ENXIO);
  	down(&strings);
  	if (string == NULL) {
  		if ((x = snd_sndstat_strings[num][dev]) != NULL) {
  			kfree(x);
  			x = NULL;
  		}
  	} else {
  		x = snd_kmalloc_strdup(string, GFP_KERNEL);
  		if (x == NULL) {
  			up(&strings);
  			return -ENOMEM;
  		}
  	}
  	snd_sndstat_strings[num][dev] = x;
  	up(&strings);
  	return 0;
  }
  
  extern void snd_card_info_read_oss(snd_info_buffer_t * buffer);
  
  static int snd_sndstat_show_strings(snd_info_buffer_t * buf, char *id, int dev)
  {
  	int idx, ok = -1;
  	char *str;
  
  	snd_iprintf(buf, "\n%s:", id);
  	down(&strings);
  	for (idx = 0; idx < SNDRV_CARDS; idx++) {
  		str = snd_sndstat_strings[idx][dev];
  		if (str) {
  			if (ok < 0) {
  				snd_iprintf(buf, "\n");
  				ok++;
  			}
  			snd_iprintf(buf, "%i: %s\n", idx, str);
  		}
  	}
  	up(&strings);
  	if (ok < 0)
  		snd_iprintf(buf, " NOT ENABLED IN CONFIG\n");
  	return ok;
  }
  
  static void snd_sndstat_proc_read(snd_info_entry_t *entry, snd_info_buffer_t * buffer)
  {
  	snd_iprintf(buffer, "Sound Driver:3.8.1a-980706 (ALSA v" CONFIG_SND_VERSION " emulation code)\n");
  	snd_iprintf(buffer, "Kernel: %s %s %s %s %s\n",
  		    system_utsname.sysname,
  		    system_utsname.nodename,
  		    system_utsname.release,
  		    system_utsname.version,
  		    system_utsname.machine);
  	snd_iprintf(buffer, "Config options: 0\n");
  	snd_iprintf(buffer, "\nInstalled drivers: \n");
  	snd_iprintf(buffer, "Type 10: ALSA emulation\n");
  	snd_iprintf(buffer, "\nCard config: \n");
  	snd_card_info_read_oss(buffer);
  	snd_sndstat_show_strings(buffer, "Audio devices", SNDRV_OSS_INFO_DEV_AUDIO);
  	snd_sndstat_show_strings(buffer, "Synth devices", SNDRV_OSS_INFO_DEV_SYNTH);
  	snd_sndstat_show_strings(buffer, "Midi devices", SNDRV_OSS_INFO_DEV_MIDI);
  	snd_sndstat_show_strings(buffer, "Timers", SNDRV_OSS_INFO_DEV_TIMERS);
  	snd_sndstat_show_strings(buffer, "Mixers", SNDRV_OSS_INFO_DEV_MIXERS);
  }
  
  int snd_info_minor_register(void)
  {
  	snd_info_entry_t *entry;
  
  	memset(snd_sndstat_strings, 0, sizeof(snd_sndstat_strings));
  	if ((entry = snd_info_create_module_entry(THIS_MODULE, "sndstat", snd_oss_root)) != NULL) {
  		entry->content = SNDRV_INFO_CONTENT_TEXT;
  		entry->c.text.read_size = 2048;
  		entry->c.text.read = snd_sndstat_proc_read;
  		if (snd_info_register(entry) < 0) {
  			snd_info_free_entry(entry);
  			entry = NULL;
  		}
  	}
  	snd_sndstat_proc_entry = entry;
  	return 0;
  }
  
  int snd_info_minor_unregister(void)
  {
  	if (snd_sndstat_proc_entry) {
  		snd_info_unregister(snd_sndstat_proc_entry);
  		snd_sndstat_proc_entry = NULL;
  	}
  	return 0;
  }
  
  #else
  
  int snd_info_minor_register(void)
  {
  	return 0;
  }
  
  int snd_info_minor_unregister(void)
  {
  	return 0;
  }
  
  #endif /* CONFIG_SND_OSSEMUL */
  