[ALSA] Remove xxx_t typedefs: OSS-emulation
[linux-2.6.git] / sound / core / info_oss.c
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 */