Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * Information interface for ALSA driver | |
c1017a4c | 3 | * Copyright (c) by Jaroslav Kysela <perex@perex.cz> |
1da177e4 LT |
4 | * |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, write to the Free Software | |
18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
19 | * | |
20 | */ | |
21 | ||
1da177e4 LT |
22 | #include <linux/slab.h> |
23 | #include <linux/time.h> | |
543537bd | 24 | #include <linux/string.h> |
d81a6d71 | 25 | #include <linux/export.h> |
1da177e4 LT |
26 | #include <sound/core.h> |
27 | #include <sound/minors.h> | |
28 | #include <sound/info.h> | |
1da177e4 | 29 | #include <linux/utsname.h> |
1a60d4c5 | 30 | #include <linux/mutex.h> |
1da177e4 | 31 | |
1da177e4 LT |
32 | /* |
33 | * OSS compatible part | |
34 | */ | |
35 | ||
1a60d4c5 | 36 | static DEFINE_MUTEX(strings); |
1da177e4 | 37 | static char *snd_sndstat_strings[SNDRV_CARDS][SNDRV_OSS_INFO_DEV_COUNT]; |
1da177e4 LT |
38 | |
39 | int snd_oss_info_register(int dev, int num, char *string) | |
40 | { | |
41 | char *x; | |
42 | ||
7eaa943c TI |
43 | if (snd_BUG_ON(dev < 0 || dev >= SNDRV_OSS_INFO_DEV_COUNT)) |
44 | return -ENXIO; | |
45 | if (snd_BUG_ON(num < 0 || num >= SNDRV_CARDS)) | |
46 | return -ENXIO; | |
1a60d4c5 | 47 | mutex_lock(&strings); |
1da177e4 LT |
48 | if (string == NULL) { |
49 | if ((x = snd_sndstat_strings[num][dev]) != NULL) { | |
50 | kfree(x); | |
51 | x = NULL; | |
52 | } | |
53 | } else { | |
543537bd | 54 | x = kstrdup(string, GFP_KERNEL); |
1da177e4 | 55 | if (x == NULL) { |
1a60d4c5 | 56 | mutex_unlock(&strings); |
1da177e4 LT |
57 | return -ENOMEM; |
58 | } | |
59 | } | |
60 | snd_sndstat_strings[num][dev] = x; | |
1a60d4c5 | 61 | mutex_unlock(&strings); |
1da177e4 LT |
62 | return 0; |
63 | } | |
64 | ||
c0d3fb39 TI |
65 | EXPORT_SYMBOL(snd_oss_info_register); |
66 | ||
174c1f65 | 67 | static int snd_sndstat_show_strings(struct snd_info_buffer *buf, char *id, int dev) |
1da177e4 LT |
68 | { |
69 | int idx, ok = -1; | |
70 | char *str; | |
71 | ||
72 | snd_iprintf(buf, "\n%s:", id); | |
1a60d4c5 | 73 | mutex_lock(&strings); |
1da177e4 LT |
74 | for (idx = 0; idx < SNDRV_CARDS; idx++) { |
75 | str = snd_sndstat_strings[idx][dev]; | |
76 | if (str) { | |
77 | if (ok < 0) { | |
78 | snd_iprintf(buf, "\n"); | |
79 | ok++; | |
80 | } | |
81 | snd_iprintf(buf, "%i: %s\n", idx, str); | |
82 | } | |
83 | } | |
1a60d4c5 | 84 | mutex_unlock(&strings); |
1da177e4 LT |
85 | if (ok < 0) |
86 | snd_iprintf(buf, " NOT ENABLED IN CONFIG\n"); | |
87 | return ok; | |
88 | } | |
89 | ||
174c1f65 TI |
90 | static void snd_sndstat_proc_read(struct snd_info_entry *entry, |
91 | struct snd_info_buffer *buffer) | |
1da177e4 | 92 | { |
42662748 | 93 | snd_iprintf(buffer, "Sound Driver:3.8.1a-980706 (ALSA emulation code)\n"); |
1da177e4 | 94 | snd_iprintf(buffer, "Kernel: %s %s %s %s %s\n", |
96b644bd SH |
95 | init_utsname()->sysname, |
96 | init_utsname()->nodename, | |
97 | init_utsname()->release, | |
98 | init_utsname()->version, | |
99 | init_utsname()->machine); | |
1da177e4 LT |
100 | snd_iprintf(buffer, "Config options: 0\n"); |
101 | snd_iprintf(buffer, "\nInstalled drivers: \n"); | |
102 | snd_iprintf(buffer, "Type 10: ALSA emulation\n"); | |
103 | snd_iprintf(buffer, "\nCard config: \n"); | |
104 | snd_card_info_read_oss(buffer); | |
105 | snd_sndstat_show_strings(buffer, "Audio devices", SNDRV_OSS_INFO_DEV_AUDIO); | |
106 | snd_sndstat_show_strings(buffer, "Synth devices", SNDRV_OSS_INFO_DEV_SYNTH); | |
107 | snd_sndstat_show_strings(buffer, "Midi devices", SNDRV_OSS_INFO_DEV_MIDI); | |
108 | snd_sndstat_show_strings(buffer, "Timers", SNDRV_OSS_INFO_DEV_TIMERS); | |
109 | snd_sndstat_show_strings(buffer, "Mixers", SNDRV_OSS_INFO_DEV_MIXERS); | |
110 | } | |
111 | ||
a0dca822 | 112 | int __init snd_info_minor_register(void) |
1da177e4 | 113 | { |
174c1f65 | 114 | struct snd_info_entry *entry; |
1da177e4 LT |
115 | |
116 | memset(snd_sndstat_strings, 0, sizeof(snd_sndstat_strings)); | |
a0dca822 TI |
117 | entry = snd_info_create_module_entry(THIS_MODULE, "sndstat", |
118 | snd_oss_root); | |
119 | if (!entry) | |
120 | return -ENOMEM; | |
121 | entry->c.text.read = snd_sndstat_proc_read; | |
122 | return snd_info_register(entry); /* freed in error path */ | |
1da177e4 | 123 | } |