info_oss.c 3.9 KB

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