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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