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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
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>
Paulo Marques543537b2005-06-23 00:09:02 -070025#include <linux/string.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070026#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
38static DECLARE_MUTEX(strings);
39static char *snd_sndstat_strings[SNDRV_CARDS][SNDRV_OSS_INFO_DEV_COUNT];
40static snd_info_entry_t *snd_sndstat_proc_entry;
41
42int 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 {
Paulo Marques543537b2005-06-23 00:09:02 -070055 x = kstrdup(string, GFP_KERNEL);
Linus Torvalds1da177e2005-04-16 15:20:36 -070056 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
66extern void snd_card_info_read_oss(snd_info_buffer_t * buffer);
67
68static int snd_sndstat_show_strings(snd_info_buffer_t * 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
91static void snd_sndstat_proc_read(snd_info_entry_t *entry, snd_info_buffer_t * buffer)
92{
93 snd_iprintf(buffer, "Sound Driver:3.8.1a-980706 (ALSA v" CONFIG_SND_VERSION " emulation code)\n");
94 snd_iprintf(buffer, "Kernel: %s %s %s %s %s\n",
95 system_utsname.sysname,
96 system_utsname.nodename,
97 system_utsname.release,
98 system_utsname.version,
99 system_utsname.machine);
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
112int snd_info_minor_register(void)
113{
114 snd_info_entry_t *entry;
115
116 memset(snd_sndstat_strings, 0, sizeof(snd_sndstat_strings));
117 if ((entry = snd_info_create_module_entry(THIS_MODULE, "sndstat", snd_oss_root)) != NULL) {
118 entry->c.text.read_size = 2048;
119 entry->c.text.read = snd_sndstat_proc_read;
120 if (snd_info_register(entry) < 0) {
121 snd_info_free_entry(entry);
122 entry = NULL;
123 }
124 }
125 snd_sndstat_proc_entry = entry;
126 return 0;
127}
128
129int snd_info_minor_unregister(void)
130{
131 if (snd_sndstat_proc_entry) {
132 snd_info_unregister(snd_sndstat_proc_entry);
133 snd_sndstat_proc_entry = NULL;
134 }
135 return 0;
136}
137
138#endif /* CONFIG_SND_OSSEMUL */