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1 | /* | |
2 | * Information interface for ALSA driver | |
3 | * Copyright (c) by Jaroslav Kysela <perex@suse.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 <sound/driver.h> | |
23 | #include <linux/slab.h> | |
24 | #include <linux/time.h> | |
25 | #include <linux/string.h> | |
26 | #include <sound/core.h> | |
27 | #include <sound/minors.h> | |
28 | #include <sound/info.h> | |
29 | #include <sound/version.h> | |
30 | #include <linux/utsname.h> | |
31 | ||
32 | #if defined(CONFIG_SND_OSSEMUL) && defined(CONFIG_PROC_FS) | |
33 | ||
34 | /* | |
35 | * OSS compatible part | |
36 | */ | |
37 | ||
38 | static DECLARE_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 | snd_assert(dev >= 0 && dev < SNDRV_OSS_INFO_DEV_COUNT, return -ENXIO); | |
47 | snd_assert(num >= 0 && num < SNDRV_CARDS, return -ENXIO); | |
48 | down(&strings); | |
49 | if (string == NULL) { | |
50 | if ((x = snd_sndstat_strings[num][dev]) != NULL) { | |
51 | kfree(x); | |
52 | x = NULL; | |
53 | } | |
54 | } else { | |
55 | x = kstrdup(string, GFP_KERNEL); | |
56 | if (x == NULL) { | |
57 | up(&strings); | |
58 | return -ENOMEM; | |
59 | } | |
60 | } | |
61 | snd_sndstat_strings[num][dev] = x; | |
62 | up(&strings); | |
63 | return 0; | |
64 | } | |
65 | ||
66 | extern void snd_card_info_read_oss(struct snd_info_buffer *buffer); | |
67 | ||
68 | static int snd_sndstat_show_strings(struct snd_info_buffer *buf, char *id, int dev) | |
69 | { | |
70 | int idx, ok = -1; | |
71 | char *str; | |
72 | ||
73 | snd_iprintf(buf, "\n%s:", id); | |
74 | down(&strings); | |
75 | for (idx = 0; idx < SNDRV_CARDS; idx++) { | |
76 | str = snd_sndstat_strings[idx][dev]; | |
77 | if (str) { | |
78 | if (ok < 0) { | |
79 | snd_iprintf(buf, "\n"); | |
80 | ok++; | |
81 | } | |
82 | snd_iprintf(buf, "%i: %s\n", idx, str); | |
83 | } | |
84 | } | |
85 | up(&strings); | |
86 | if (ok < 0) | |
87 | snd_iprintf(buf, " NOT ENABLED IN CONFIG\n"); | |
88 | return ok; | |
89 | } | |
90 | ||
91 | static void snd_sndstat_proc_read(struct snd_info_entry *entry, | |
92 | struct snd_info_buffer *buffer) | |
93 | { | |
94 | snd_iprintf(buffer, "Sound Driver:3.8.1a-980706 (ALSA v" CONFIG_SND_VERSION " emulation code)\n"); | |
95 | snd_iprintf(buffer, "Kernel: %s %s %s %s %s\n", | |
96 | system_utsname.sysname, | |
97 | system_utsname.nodename, | |
98 | system_utsname.release, | |
99 | system_utsname.version, | |
100 | system_utsname.machine); | |
101 | snd_iprintf(buffer, "Config options: 0\n"); | |
102 | snd_iprintf(buffer, "\nInstalled drivers: \n"); | |
103 | snd_iprintf(buffer, "Type 10: ALSA emulation\n"); | |
104 | snd_iprintf(buffer, "\nCard config: \n"); | |
105 | snd_card_info_read_oss(buffer); | |
106 | snd_sndstat_show_strings(buffer, "Audio devices", SNDRV_OSS_INFO_DEV_AUDIO); | |
107 | snd_sndstat_show_strings(buffer, "Synth devices", SNDRV_OSS_INFO_DEV_SYNTH); | |
108 | snd_sndstat_show_strings(buffer, "Midi devices", SNDRV_OSS_INFO_DEV_MIDI); | |
109 | snd_sndstat_show_strings(buffer, "Timers", SNDRV_OSS_INFO_DEV_TIMERS); | |
110 | snd_sndstat_show_strings(buffer, "Mixers", SNDRV_OSS_INFO_DEV_MIXERS); | |
111 | } | |
112 | ||
113 | int snd_info_minor_register(void) | |
114 | { | |
115 | struct snd_info_entry *entry; | |
116 | ||
117 | memset(snd_sndstat_strings, 0, sizeof(snd_sndstat_strings)); | |
118 | if ((entry = snd_info_create_module_entry(THIS_MODULE, "sndstat", snd_oss_root)) != NULL) { | |
119 | entry->c.text.read_size = 2048; | |
120 | entry->c.text.read = snd_sndstat_proc_read; | |
121 | if (snd_info_register(entry) < 0) { | |
122 | snd_info_free_entry(entry); | |
123 | entry = NULL; | |
124 | } | |
125 | } | |
126 | snd_sndstat_proc_entry = entry; | |
127 | return 0; | |
128 | } | |
129 | ||
130 | int snd_info_minor_unregister(void) | |
131 | { | |
132 | if (snd_sndstat_proc_entry) { | |
133 | snd_info_unregister(snd_sndstat_proc_entry); | |
134 | snd_sndstat_proc_entry = NULL; | |
135 | } | |
136 | return 0; | |
137 | } | |
138 | ||
139 | #endif /* CONFIG_SND_OSSEMUL */ |