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1 | /* |
2 | * Information interface for ALSA driver |
3 | * Copyright (c) by Jaroslav Kysela <perex@perex.cz> |
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 | |
22 | #include <linux/slab.h> |
23 | #include <linux/time.h> |
24 | #include <linux/string.h> |
25 | #include <sound/core.h> |
26 | #include <sound/minors.h> |
27 | #include <sound/info.h> |
28 | #include <sound/version.h> |
29 | #include <linux/utsname.h> |
30 | #include <linux/mutex.h> |
31 | |
32 | #if defined(CONFIG_SND_OSSEMUL) && defined(CONFIG_PROC_FS) |
33 | |
34 | /* |
35 | * OSS compatible part |
36 | */ |
37 | |
38 | static DEFINE_MUTEX(strings); |
39 | static char *snd_sndstat_strings[SNDRV_CARDS][SNDRV_OSS_INFO_DEV_COUNT]; |
40 | static struct snd_info_entry *snd_sndstat_proc_entry; |
41 | |
42 | int snd_oss_info_register(int dev, int num, char *string) |
43 | { |
44 | char *x; |
45 | |
46 | if (snd_BUG_ON(dev < 0 || dev >= SNDRV_OSS_INFO_DEV_COUNT)) |
47 | return -ENXIO; |
48 | if (snd_BUG_ON(num < 0 || num >= SNDRV_CARDS)) |
49 | return -ENXIO; |
50 | mutex_lock(&strings); |
51 | if (string == NULL) { |
52 | if ((x = snd_sndstat_strings[num][dev]) != NULL) { |
53 | kfree(x); |
54 | x = NULL; |
55 | } |
56 | } else { |
57 | x = kstrdup(string, GFP_KERNEL); |
58 | if (x == NULL) { |
59 | mutex_unlock(&strings); |
60 | return -ENOMEM; |
61 | } |
62 | } |
63 | snd_sndstat_strings[num][dev] = x; |
64 | mutex_unlock(&strings); |
65 | return 0; |
66 | } |
67 | |
68 | EXPORT_SYMBOL(snd_oss_info_register); |
69 | |
70 | static int snd_sndstat_show_strings(struct snd_info_buffer *buf, char *id, int dev) |
71 | { |
72 | int idx, ok = -1; |
73 | char *str; |
74 | |
75 | snd_iprintf(buf, "\n%s:", id); |
76 | mutex_lock(&strings); |
77 | for (idx = 0; idx < SNDRV_CARDS; idx++) { |
78 | str = snd_sndstat_strings[idx][dev]; |
79 | if (str) { |
80 | if (ok < 0) { |
81 | snd_iprintf(buf, "\n"); |
82 | ok++; |
83 | } |
84 | snd_iprintf(buf, "%i: %s\n", idx, str); |
85 | } |
86 | } |
87 | mutex_unlock(&strings); |
88 | if (ok < 0) |
89 | snd_iprintf(buf, " NOT ENABLED IN CONFIG\n"); |
90 | return ok; |
91 | } |
92 | |
93 | static void snd_sndstat_proc_read(struct snd_info_entry *entry, |
94 | struct snd_info_buffer *buffer) |
95 | { |
96 | snd_iprintf(buffer, "Sound Driver:3.8.1a-980706 (ALSA v" CONFIG_SND_VERSION " emulation code)\n"); |
97 | snd_iprintf(buffer, "Kernel: %s %s %s %s %s\n", |
98 | init_utsname()->sysname, |
99 | init_utsname()->nodename, |
100 | init_utsname()->release, |
101 | init_utsname()->version, |
102 | init_utsname()->machine); |
103 | snd_iprintf(buffer, "Config options: 0\n"); |
104 | snd_iprintf(buffer, "\nInstalled drivers: \n"); |
105 | snd_iprintf(buffer, "Type 10: ALSA emulation\n"); |
106 | snd_iprintf(buffer, "\nCard config: \n"); |
107 | snd_card_info_read_oss(buffer); |
108 | snd_sndstat_show_strings(buffer, "Audio devices", SNDRV_OSS_INFO_DEV_AUDIO); |
109 | snd_sndstat_show_strings(buffer, "Synth devices", SNDRV_OSS_INFO_DEV_SYNTH); |
110 | snd_sndstat_show_strings(buffer, "Midi devices", SNDRV_OSS_INFO_DEV_MIDI); |
111 | snd_sndstat_show_strings(buffer, "Timers", SNDRV_OSS_INFO_DEV_TIMERS); |
112 | snd_sndstat_show_strings(buffer, "Mixers", SNDRV_OSS_INFO_DEV_MIXERS); |
113 | } |
114 | |
115 | int snd_info_minor_register(void) |
116 | { |
117 | struct snd_info_entry *entry; |
118 | |
119 | memset(snd_sndstat_strings, 0, sizeof(snd_sndstat_strings)); |
120 | if ((entry = snd_info_create_module_entry(THIS_MODULE, "sndstat", snd_oss_root)) != NULL) { |
121 | entry->c.text.read = snd_sndstat_proc_read; |
122 | if (snd_info_register(entry) < 0) { |
123 | snd_info_free_entry(entry); |
124 | entry = NULL; |
125 | } |
126 | } |
127 | snd_sndstat_proc_entry = entry; |
128 | return 0; |
129 | } |
130 | |
131 | int snd_info_minor_unregister(void) |
132 | { |
133 | snd_info_free_entry(snd_sndstat_proc_entry); |
134 | snd_sndstat_proc_entry = NULL; |
135 | return 0; |
136 | } |
137 | |
138 | #endif /* CONFIG_SND_OSSEMUL */ |
139 |
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