1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Information interface for ALSA driver
4 * Copyright (c) by Jaroslav Kysela <perex@perex.cz>
7 #include <linux/slab.h>
8 #include <linux/time.h>
9 #include <linux/string.h>
10 #include <linux/export.h>
11 #include <sound/core.h>
12 #include <sound/minors.h>
13 #include <sound/info.h>
14 #include <linux/utsname.h>
15 #include <linux/mutex.h>
21 static DEFINE_MUTEX(strings);
22 static char *snd_sndstat_strings[SNDRV_CARDS][SNDRV_OSS_INFO_DEV_COUNT];
24 int snd_oss_info_register(int dev, int num, char *string)
28 if (snd_BUG_ON(dev < 0 || dev >= SNDRV_OSS_INFO_DEV_COUNT))
30 if (snd_BUG_ON(num < 0 || num >= SNDRV_CARDS))
34 x = snd_sndstat_strings[num][dev];
40 x = kstrdup(string, GFP_KERNEL);
42 mutex_unlock(&strings);
46 snd_sndstat_strings[num][dev] = x;
47 mutex_unlock(&strings);
50 EXPORT_SYMBOL(snd_oss_info_register);
52 static int snd_sndstat_show_strings(struct snd_info_buffer *buf, char *id, int dev)
57 snd_iprintf(buf, "\n%s:", id);
59 for (idx = 0; idx < SNDRV_CARDS; idx++) {
60 str = snd_sndstat_strings[idx][dev];
63 snd_iprintf(buf, "\n");
66 snd_iprintf(buf, "%i: %s\n", idx, str);
69 mutex_unlock(&strings);
71 snd_iprintf(buf, " NOT ENABLED IN CONFIG\n");
75 static void snd_sndstat_proc_read(struct snd_info_entry *entry,
76 struct snd_info_buffer *buffer)
78 snd_iprintf(buffer, "Sound Driver:3.8.1a-980706 (ALSA emulation code)\n");
79 snd_iprintf(buffer, "Kernel: %s %s %s %s %s\n",
80 init_utsname()->sysname,
81 init_utsname()->nodename,
82 init_utsname()->release,
83 init_utsname()->version,
84 init_utsname()->machine);
85 snd_iprintf(buffer, "Config options: 0\n");
86 snd_iprintf(buffer, "\nInstalled drivers: \n");
87 snd_iprintf(buffer, "Type 10: ALSA emulation\n");
88 snd_iprintf(buffer, "\nCard config: \n");
89 snd_card_info_read_oss(buffer);
90 snd_sndstat_show_strings(buffer, "Audio devices", SNDRV_OSS_INFO_DEV_AUDIO);
91 snd_sndstat_show_strings(buffer, "Synth devices", SNDRV_OSS_INFO_DEV_SYNTH);
92 snd_sndstat_show_strings(buffer, "Midi devices", SNDRV_OSS_INFO_DEV_MIDI);
93 snd_sndstat_show_strings(buffer, "Timers", SNDRV_OSS_INFO_DEV_TIMERS);
94 snd_sndstat_show_strings(buffer, "Mixers", SNDRV_OSS_INFO_DEV_MIXERS);
97 int __init snd_info_minor_register(void)
99 struct snd_info_entry *entry;
101 memset(snd_sndstat_strings, 0, sizeof(snd_sndstat_strings));
102 entry = snd_info_create_module_entry(THIS_MODULE, "sndstat",
106 entry->c.text.read = snd_sndstat_proc_read;
107 return snd_info_register(entry); /* freed in error path */