sound/core/info_oss.c

Source file repositories/reference/linux-study-clean/sound/core/info_oss.c

File Facts

System
Linux kernel
Corpus path
sound/core/info_oss.c
Extension
.c
Size
2811 bytes
Lines
103
Domain
Driver Families
Bucket
sound/core
Inferred role
Driver Families: exported/initcall integration point
Status
integration implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

if (str) {
			if (ok < 0) {
				snd_iprintf(buf, "\n");
				ok++;
			}
			snd_iprintf(buf, "%i: %s\n", idx, str);
		}
	}
	if (ok < 0)
		snd_iprintf(buf, " NOT ENABLED IN CONFIG\n");
	return ok;
}

static void snd_sndstat_proc_read(struct snd_info_entry *entry,
				  struct snd_info_buffer *buffer)
{
	snd_iprintf(buffer, "Sound Driver:3.8.1a-980706 (ALSA emulation code)\n");
	snd_iprintf(buffer, "Kernel: %s %s %s %s %s\n",
		    init_utsname()->sysname,
		    init_utsname()->nodename,
		    init_utsname()->release,
		    init_utsname()->version,
		    init_utsname()->machine);
	snd_iprintf(buffer, "Config options: 0\n");
	snd_iprintf(buffer, "\nInstalled drivers: \n");
	snd_iprintf(buffer, "Type 10: ALSA emulation\n");
	snd_iprintf(buffer, "\nCard config: \n");
	snd_card_info_read_oss(buffer);
	snd_sndstat_show_strings(buffer, "Audio devices", SNDRV_OSS_INFO_DEV_AUDIO);
	snd_sndstat_show_strings(buffer, "Synth devices", SNDRV_OSS_INFO_DEV_SYNTH);
	snd_sndstat_show_strings(buffer, "Midi devices", SNDRV_OSS_INFO_DEV_MIDI);
	snd_sndstat_show_strings(buffer, "Timers", SNDRV_OSS_INFO_DEV_TIMERS);
	snd_sndstat_show_strings(buffer, "Mixers", SNDRV_OSS_INFO_DEV_MIXERS);
}

int __init snd_info_minor_register(void)
{
	struct snd_info_entry *entry;

	memset(snd_sndstat_strings, 0, sizeof(snd_sndstat_strings));
	entry = snd_info_create_module_entry(THIS_MODULE, "sndstat",
					     snd_oss_root);
	if (!entry)
		return -ENOMEM;
	entry->c.text.read = snd_sndstat_proc_read;
	return snd_info_register(entry); /* freed in error path */
}

Annotation

Implementation Notes