sound/hda/codecs/cmedia.c

Source file repositories/reference/linux-study-clean/sound/hda/codecs/cmedia.c

File Facts

System
Linux kernel
Corpus path
sound/hda/codecs/cmedia.c
Extension
.c
Size
2380 bytes
Lines
100
Domain
Driver Families
Bucket
sound/hda
Inferred role
Driver Families: implementation source
Status
source 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 (!snd_hda_gen_add_kctl(spec, NULL, &amp_kctl)) {
				err = -ENOMEM;
				goto error;
			}
		}
	}

	return 0;

 error:
	snd_hda_gen_remove(codec);
	return err;
}

static const struct hda_codec_ops cmedia_codec_ops = {
	.probe = cmedia_probe,
	.remove = snd_hda_gen_remove,
	.build_controls = snd_hda_gen_build_controls,
	.build_pcms = snd_hda_gen_build_pcms,
	.init = snd_hda_gen_init,
	.unsol_event = snd_hda_jack_unsol_event,
	.check_power_status = snd_hda_gen_check_power_status,
	.stream_pm = snd_hda_gen_stream_pm,
};

/*
 * driver entries
 */
static const struct hda_device_id snd_hda_id_cmedia[] = {
	HDA_CODEC_ID(0x13f68888, "CMI8888"),
	HDA_CODEC_ID(0x13f69880, "CMI9880"),
	HDA_CODEC_ID(0x434d4980, "CMI9880"),
	{} /* terminator */
};
MODULE_DEVICE_TABLE(hdaudio, snd_hda_id_cmedia);

MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("C-Media HD-audio codec");

static struct hda_codec_driver cmedia_driver = {
	.id = snd_hda_id_cmedia,
	.ops = &cmedia_codec_ops,
};

module_hda_codec_driver(cmedia_driver);

Annotation

Implementation Notes