diff options
Diffstat (limited to 'sound/core/info_oss.c')
| -rw-r--r-- | sound/core/info_oss.c | 139 |
1 files changed, 139 insertions, 0 deletions
diff --git a/sound/core/info_oss.c b/sound/core/info_oss.c new file mode 100644 index 00000000..cf42ab50 --- /dev/null +++ b/sound/core/info_oss.c @@ -0,0 +1,139 @@ +/* + * Information interface for ALSA driver + * Copyright (c) by Jaroslav Kysela <perex@perex.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 <linux/slab.h> +#include <linux/time.h> +#include <linux/string.h> +#include <linux/export.h> +#include <sound/core.h> +#include <sound/minors.h> +#include <sound/info.h> +#include <sound/version.h> +#include <linux/utsname.h> +#include <linux/mutex.h> + +#if defined(CONFIG_SND_OSSEMUL) && defined(CONFIG_PROC_FS) + +/* + * OSS compatible part + */ + +static DEFINE_MUTEX(strings); +static char *snd_sndstat_strings[SNDRV_CARDS][SNDRV_OSS_INFO_DEV_COUNT]; +static struct snd_info_entry *snd_sndstat_proc_entry; + +int snd_oss_info_register(int dev, int num, char *string) +{ + char *x; + + if (snd_BUG_ON(dev < 0 || dev >= SNDRV_OSS_INFO_DEV_COUNT)) + return -ENXIO; + if (snd_BUG_ON(num < 0 || num >= SNDRV_CARDS)) + return -ENXIO; + mutex_lock(&strings); + if (string == NULL) { + if ((x = snd_sndstat_strings[num][dev]) != NULL) { + kfree(x); + x = NULL; + } + } else { + x = kstrdup(string, GFP_KERNEL); + if (x == NULL) { + mutex_unlock(&strings); + return -ENOMEM; + } + } + snd_sndstat_strings[num][dev] = x; + mutex_unlock(&strings); + return 0; +} + +EXPORT_SYMBOL(snd_oss_info_register); + +static int snd_sndstat_show_strings(struct snd_info_buffer *buf, char *id, int dev) +{ + int idx, ok = -1; + char *str; + + snd_iprintf(buf, "\n%s:", id); + mutex_lock(&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); + } + } + mutex_unlock(&strings); + if (ok < 0) + snd_iprintf(buf, " NOT ENABLED IN CONFIG\n"); + return ok; +} + +static void snd_sndstat_proc_read(struct snd_info_entry *entry, + struct snd_info_buffer *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", + init_utsname()->sysname, + init_utsname()->nodename, + init_utsname()->release, + init_utsname()->version, + init_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) +{ + struct snd_info_entry *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->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) +{ + snd_info_free_entry(snd_sndstat_proc_entry); + snd_sndstat_proc_entry = NULL; + return 0; +} + +#endif /* CONFIG_SND_OSSEMUL */ |