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 #include <linux/mutex.h> 32 33 #if defined(CONFIG_SND_OSSEMUL) && defined(CONFIG_PROC_FS) 34 35 /* 36 * OSS compatible part 37 */ 38 39 static DEFINE_MUTEX(strings); 40 static char *snd_sndstat_strings[SNDRV_CARDS][SNDRV_OSS_INFO_DEV_COUNT]; 41 static struct snd_info_entry *snd_sndstat_proc_entry; 42 43 int snd_oss_info_register(int dev, int num, char *string) 44 { 45 char *x; 46 47 snd_assert(dev >= 0 && dev < SNDRV_OSS_INFO_DEV_COUNT, return -ENXIO); 48 snd_assert(num >= 0 && num < SNDRV_CARDS, return -ENXIO); 49 mutex_lock(&strings); 50 if (string == NULL) { 51 if ((x = snd_sndstat_strings[num][dev]) != NULL) { 52 kfree(x); 53 x = NULL; 54 } 55 } else { 56 x = kstrdup(string, GFP_KERNEL); 57 if (x == NULL) { 58 mutex_unlock(&strings); 59 return -ENOMEM; 60 } 61 } 62 snd_sndstat_strings[num][dev] = x; 63 mutex_unlock(&strings); 64 return 0; 65 } 66 67 extern void snd_card_info_read_oss(struct snd_info_buffer *buffer); 68 69 static int snd_sndstat_show_strings(struct snd_info_buffer *buf, char *id, int dev) 70 { 71 int idx, ok = -1; 72 char *str; 73 74 snd_iprintf(buf, "\n%s:", id); 75 mutex_lock(&strings); 76 for (idx = 0; idx < SNDRV_CARDS; idx++) { 77 str = snd_sndstat_strings[idx][dev]; 78 if (str) { 79 if (ok < 0) { 80 snd_iprintf(buf, "\n"); 81 ok++; 82 } 83 snd_iprintf(buf, "%i: %s\n", idx, str); 84 } 85 } 86 mutex_unlock(&strings); 87 if (ok < 0) 88 snd_iprintf(buf, " NOT ENABLED IN CONFIG\n"); 89 return ok; 90 } 91 92 static void snd_sndstat_proc_read(struct snd_info_entry *entry, 93 struct snd_info_buffer *buffer) 94 { 95 snd_iprintf(buffer, "Sound Driver:3.8.1a-980706 (ALSA v" CONFIG_SND_VERSION " emulation code)\n"); 96 snd_iprintf(buffer, "Kernel: %s %s %s %s %s\n", 97 system_utsname.sysname, 98 system_utsname.nodename, 99 system_utsname.release, 100 system_utsname.version, 101 system_utsname.machine); 102 snd_iprintf(buffer, "Config options: 0\n"); 103 snd_iprintf(buffer, "\nInstalled drivers: \n"); 104 snd_iprintf(buffer, "Type 10: ALSA emulation\n"); 105 snd_iprintf(buffer, "\nCard config: \n"); 106 snd_card_info_read_oss(buffer); 107 snd_sndstat_show_strings(buffer, "Audio devices", SNDRV_OSS_INFO_DEV_AUDIO); 108 snd_sndstat_show_strings(buffer, "Synth devices", SNDRV_OSS_INFO_DEV_SYNTH); 109 snd_sndstat_show_strings(buffer, "Midi devices", SNDRV_OSS_INFO_DEV_MIDI); 110 snd_sndstat_show_strings(buffer, "Timers", SNDRV_OSS_INFO_DEV_TIMERS); 111 snd_sndstat_show_strings(buffer, "Mixers", SNDRV_OSS_INFO_DEV_MIXERS); 112 } 113 114 int snd_info_minor_register(void) 115 { 116 struct snd_info_entry *entry; 117 118 memset(snd_sndstat_strings, 0, sizeof(snd_sndstat_strings)); 119 if ((entry = snd_info_create_module_entry(THIS_MODULE, "sndstat", snd_oss_root)) != NULL) { 120 entry->c.text.read_size = 2048; 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 if (snd_sndstat_proc_entry) { 134 snd_info_unregister(snd_sndstat_proc_entry); 135 snd_sndstat_proc_entry = NULL; 136 } 137 return 0; 138 } 139 140 #endif /* CONFIG_SND_OSSEMUL */ 141