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 <sound/core.h>
26 #include <sound/minors.h>
27 #include <sound/info.h>
28 #include <sound/version.h>
29 #include <linux/utsname.h>
30
31 #if defined(CONFIG_SND_OSSEMUL) && defined(CONFIG_PROC_FS)
32
33 /*
34 * OSS compatible part
35 */
36
37 static DECLARE_MUTEX(strings);
38 static char *snd_sndstat_strings[SNDRV_CARDS][SNDRV_OSS_INFO_DEV_COUNT];
39 static snd_info_entry_t *snd_sndstat_proc_entry;
40
41 int snd_oss_info_register(int dev, int num, char *string)
42 {
43 char *x;
44
45 snd_assert(dev >= 0 && dev < SNDRV_OSS_INFO_DEV_COUNT, return -ENXIO);
46 snd_assert(num >= 0 && num < SNDRV_CARDS, return -ENXIO);
47 down(&strings);
48 if (string == NULL) {
49 if ((x = snd_sndstat_strings[num][dev]) != NULL) {
50 kfree(x);
51 x = NULL;
52 }
53 } else {
54 x = snd_kmalloc_strdup(string, GFP_KERNEL);
55 if (x == NULL) {
56 up(&strings);
57 return -ENOMEM;
58 }
59 }
60 snd_sndstat_strings[num][dev] = x;
61 up(&strings);
62 return 0;
63 }
64
65 extern void snd_card_info_read_oss(snd_info_buffer_t * buffer);
66
67 static int snd_sndstat_show_strings(snd_info_buffer_t * buf, char *id, int dev)
68 {
69 int idx, ok = -1;
70 char *str;
71
72 snd_iprintf(buf, "\n%s:", id);
73 down(&strings);
74 for (idx = 0; idx < SNDRV_CARDS; idx++) {
75 str = snd_sndstat_strings[idx][dev];
76 if (str) {
77 if (ok < 0) {
78 snd_iprintf(buf, "\n");
79 ok++;
80 }
81 snd_iprintf(buf, "%i: %s\n", idx, str);
82 }
83 }
84 up(&strings);
85 if (ok < 0)
86 snd_iprintf(buf, " NOT ENABLED IN CONFIG\n");
87 return ok;
88 }
89
90 static void snd_sndstat_proc_read(snd_info_entry_t *entry, snd_info_buffer_t * buffer)
91 {
92 snd_iprintf(buffer, "Sound Driver:3.8.1a-980706 (ALSA v" CONFIG_SND_VERSION " emulation code)\n");
93 snd_iprintf(buffer, "Kernel: %s %s %s %s %s\n",
94 system_utsname.sysname,
95 system_utsname.nodename,
96 system_utsname.release,
97 system_utsname.version,
98 system_utsname.machine);
99 snd_iprintf(buffer, "Config options: 0\n");
100 snd_iprintf(buffer, "\nInstalled drivers: \n");
101 snd_iprintf(buffer, "Type 10: ALSA emulation\n");
102 snd_iprintf(buffer, "\nCard config: \n");
103 snd_card_info_read_oss(buffer);
104 snd_sndstat_show_strings(buffer, "Audio devices", SNDRV_OSS_INFO_DEV_AUDIO);
105 snd_sndstat_show_strings(buffer, "Synth devices", SNDRV_OSS_INFO_DEV_SYNTH);
106 snd_sndstat_show_strings(buffer, "Midi devices", SNDRV_OSS_INFO_DEV_MIDI);
107 snd_sndstat_show_strings(buffer, "Timers", SNDRV_OSS_INFO_DEV_TIMERS);
108 snd_sndstat_show_strings(buffer, "Mixers", SNDRV_OSS_INFO_DEV_MIXERS);
109 }
110
111 int snd_info_minor_register(void)
112 {
113 snd_info_entry_t *entry;
114
115 memset(snd_sndstat_strings, 0, sizeof(snd_sndstat_strings));
116 if ((entry = snd_info_create_module_entry(THIS_MODULE, "sndstat", snd_oss_root)) != NULL) {
117 entry->c.text.read_size = 2048;
118 entry->c.text.read = snd_sndstat_proc_read;
119 if (snd_info_register(entry) < 0) {
120 snd_info_free_entry(entry);
121 entry = NULL;
122 }
123 }
124 snd_sndstat_proc_entry = entry;
125 return 0;
126 }
127
128 int snd_info_minor_unregister(void)
129 {
130 if (snd_sndstat_proc_entry) {
131 snd_info_unregister(snd_sndstat_proc_entry);
132 snd_sndstat_proc_entry = NULL;
133 }
134 return 0;
135 }
136
137 #endif /* CONFIG_SND_OSSEMUL */
138
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