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1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * Information interface for ALSA driver
4 * Copyright (c) by Jaroslav Kysela <perex@perex.cz>
5 */
6
7#include <linux/slab.h>
8#include <linux/time.h>
9#include <linux/string.h>
10#include <linux/export.h>
11#include <sound/core.h>
12#include <sound/minors.h>
13#include <sound/info.h>
14#include <linux/utsname.h>
15#include <linux/mutex.h>
16
17/*
18 * OSS compatible part
19 */
20
21static DEFINE_MUTEX(strings);
22static char *snd_sndstat_strings[SNDRV_CARDS][SNDRV_OSS_INFO_DEV_COUNT];
23
24int snd_oss_info_register(int dev, int num, char *string)
25{
26 char *x;
27
28 if (snd_BUG_ON(dev < 0 || dev >= SNDRV_OSS_INFO_DEV_COUNT))
29 return -ENXIO;
30 if (snd_BUG_ON(num < 0 || num >= SNDRV_CARDS))
31 return -ENXIO;
32 mutex_lock(&strings);
33 if (string == NULL) {
34 if ((x = snd_sndstat_strings[num][dev]) != NULL) {
35 kfree(x);
36 x = NULL;
37 }
38 } else {
39 x = kstrdup(string, GFP_KERNEL);
40 if (x == NULL) {
41 mutex_unlock(&strings);
42 return -ENOMEM;
43 }
44 }
45 snd_sndstat_strings[num][dev] = x;
46 mutex_unlock(&strings);
47 return 0;
48}
49EXPORT_SYMBOL(snd_oss_info_register);
50
51static int snd_sndstat_show_strings(struct snd_info_buffer *buf, char *id, int dev)
52{
53 int idx, ok = -1;
54 char *str;
55
56 snd_iprintf(buf, "\n%s:", id);
57 mutex_lock(&strings);
58 for (idx = 0; idx < SNDRV_CARDS; idx++) {
59 str = snd_sndstat_strings[idx][dev];
60 if (str) {
61 if (ok < 0) {
62 snd_iprintf(buf, "\n");
63 ok++;
64 }
65 snd_iprintf(buf, "%i: %s\n", idx, str);
66 }
67 }
68 mutex_unlock(&strings);
69 if (ok < 0)
70 snd_iprintf(buf, " NOT ENABLED IN CONFIG\n");
71 return ok;
72}
73
74static void snd_sndstat_proc_read(struct snd_info_entry *entry,
75 struct snd_info_buffer *buffer)
76{
77 snd_iprintf(buffer, "Sound Driver:3.8.1a-980706 (ALSA emulation code)\n");
78 snd_iprintf(buffer, "Kernel: %s %s %s %s %s\n",
79 init_utsname()->sysname,
80 init_utsname()->nodename,
81 init_utsname()->release,
82 init_utsname()->version,
83 init_utsname()->machine);
84 snd_iprintf(buffer, "Config options: 0\n");
85 snd_iprintf(buffer, "\nInstalled drivers: \n");
86 snd_iprintf(buffer, "Type 10: ALSA emulation\n");
87 snd_iprintf(buffer, "\nCard config: \n");
88 snd_card_info_read_oss(buffer);
89 snd_sndstat_show_strings(buffer, "Audio devices", SNDRV_OSS_INFO_DEV_AUDIO);
90 snd_sndstat_show_strings(buffer, "Synth devices", SNDRV_OSS_INFO_DEV_SYNTH);
91 snd_sndstat_show_strings(buffer, "Midi devices", SNDRV_OSS_INFO_DEV_MIDI);
92 snd_sndstat_show_strings(buffer, "Timers", SNDRV_OSS_INFO_DEV_TIMERS);
93 snd_sndstat_show_strings(buffer, "Mixers", SNDRV_OSS_INFO_DEV_MIXERS);
94}
95
96int __init snd_info_minor_register(void)
97{
98 struct snd_info_entry *entry;
99
100 memset(snd_sndstat_strings, 0, sizeof(snd_sndstat_strings));
101 entry = snd_info_create_module_entry(THIS_MODULE, "sndstat",
102 snd_oss_root);
103 if (!entry)
104 return -ENOMEM;
105 entry->c.text.read = snd_sndstat_proc_read;
106 return snd_info_register(entry); /* freed in error path */
107}
1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * Information interface for ALSA driver
4 * Copyright (c) by Jaroslav Kysela <perex@perex.cz>
5 */
6
7#include <linux/slab.h>
8#include <linux/time.h>
9#include <linux/string.h>
10#include <linux/export.h>
11#include <sound/core.h>
12#include <sound/minors.h>
13#include <sound/info.h>
14#include <linux/utsname.h>
15#include <linux/mutex.h>
16
17/*
18 * OSS compatible part
19 */
20
21static DEFINE_MUTEX(strings);
22static char *snd_sndstat_strings[SNDRV_CARDS][SNDRV_OSS_INFO_DEV_COUNT];
23
24int snd_oss_info_register(int dev, int num, char *string)
25{
26 char *x;
27
28 if (snd_BUG_ON(dev < 0 || dev >= SNDRV_OSS_INFO_DEV_COUNT))
29 return -ENXIO;
30 if (snd_BUG_ON(num < 0 || num >= SNDRV_CARDS))
31 return -ENXIO;
32 mutex_lock(&strings);
33 if (string == NULL) {
34 x = snd_sndstat_strings[num][dev];
35 if (x) {
36 kfree(x);
37 x = NULL;
38 }
39 } else {
40 x = kstrdup(string, GFP_KERNEL);
41 if (x == NULL) {
42 mutex_unlock(&strings);
43 return -ENOMEM;
44 }
45 }
46 snd_sndstat_strings[num][dev] = x;
47 mutex_unlock(&strings);
48 return 0;
49}
50EXPORT_SYMBOL(snd_oss_info_register);
51
52static int snd_sndstat_show_strings(struct snd_info_buffer *buf, char *id, int dev)
53{
54 int idx, ok = -1;
55 char *str;
56
57 snd_iprintf(buf, "\n%s:", id);
58 mutex_lock(&strings);
59 for (idx = 0; idx < SNDRV_CARDS; idx++) {
60 str = snd_sndstat_strings[idx][dev];
61 if (str) {
62 if (ok < 0) {
63 snd_iprintf(buf, "\n");
64 ok++;
65 }
66 snd_iprintf(buf, "%i: %s\n", idx, str);
67 }
68 }
69 mutex_unlock(&strings);
70 if (ok < 0)
71 snd_iprintf(buf, " NOT ENABLED IN CONFIG\n");
72 return ok;
73}
74
75static void snd_sndstat_proc_read(struct snd_info_entry *entry,
76 struct snd_info_buffer *buffer)
77{
78 snd_iprintf(buffer, "Sound Driver:3.8.1a-980706 (ALSA emulation code)\n");
79 snd_iprintf(buffer, "Kernel: %s %s %s %s %s\n",
80 init_utsname()->sysname,
81 init_utsname()->nodename,
82 init_utsname()->release,
83 init_utsname()->version,
84 init_utsname()->machine);
85 snd_iprintf(buffer, "Config options: 0\n");
86 snd_iprintf(buffer, "\nInstalled drivers: \n");
87 snd_iprintf(buffer, "Type 10: ALSA emulation\n");
88 snd_iprintf(buffer, "\nCard config: \n");
89 snd_card_info_read_oss(buffer);
90 snd_sndstat_show_strings(buffer, "Audio devices", SNDRV_OSS_INFO_DEV_AUDIO);
91 snd_sndstat_show_strings(buffer, "Synth devices", SNDRV_OSS_INFO_DEV_SYNTH);
92 snd_sndstat_show_strings(buffer, "Midi devices", SNDRV_OSS_INFO_DEV_MIDI);
93 snd_sndstat_show_strings(buffer, "Timers", SNDRV_OSS_INFO_DEV_TIMERS);
94 snd_sndstat_show_strings(buffer, "Mixers", SNDRV_OSS_INFO_DEV_MIXERS);
95}
96
97int __init snd_info_minor_register(void)
98{
99 struct snd_info_entry *entry;
100
101 memset(snd_sndstat_strings, 0, sizeof(snd_sndstat_strings));
102 entry = snd_info_create_module_entry(THIS_MODULE, "sndstat",
103 snd_oss_root);
104 if (!entry)
105 return -ENOMEM;
106 entry->c.text.read = snd_sndstat_proc_read;
107 return snd_info_register(entry); /* freed in error path */
108}