Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / sound / core / info_oss.c

diff --git a/kernel/sound/core/info_oss.c b/kernel/sound/core/info_oss.c
new file mode 100644 (file)
index 0000000..83c29db
--- /dev/null
+++ b/kernel/sound/core/info_oss.c
@@ -0,0 +1,138 @@
+/*
+ *  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 <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 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 */