sound/drivers/vx/vx_hwdep.c

Source file repositories/reference/linux-study-clean/sound/drivers/vx/vx_hwdep.c

File Facts

System
Linux kernel
Corpus path
sound/drivers/vx/vx_hwdep.c
Extension
.c
Size
2640 bytes
Lines
113
Domain
Driver Families
Bucket
sound/drivers
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 (request_firmware(&fw, path, chip->card->dev)) {
			dev_err(chip->card->dev, "vx: can't load firmware %s\n", path);
			return -ENOENT;
		}
		err = chip->ops->load_dsp(chip, i, fw);
		if (err < 0) {
			release_firmware(fw);
			return err;
		}
		if (i == 1)
			chip->chip_status |= VX_STAT_XILINX_LOADED;
#ifdef CONFIG_PM
		chip->firmware[i] = fw;
#else
		release_firmware(fw);
#endif
	}

	/* ok, we reached to the last one */
	/* create the devices if not built yet */
	err = snd_vx_pcm_new(chip);
	if (err < 0)
		return err;

	err = snd_vx_mixer_new(chip);
	if (err < 0)
		return err;

	if (chip->ops->add_controls) {
		err = chip->ops->add_controls(chip);
		if (err < 0)
			return err;
	}

	chip->chip_status |= VX_STAT_DEVICE_INIT;
	chip->chip_status |= VX_STAT_CHIP_INIT;

	return snd_card_register(chip->card);
}

/* exported */
void snd_vx_free_firmware(struct vx_core *chip)
{
#ifdef CONFIG_PM
	int i;
	for (i = 0; i < 4; i++)
		release_firmware(chip->firmware[i]);
#endif
}

EXPORT_SYMBOL(snd_vx_setup_firmware);
EXPORT_SYMBOL(snd_vx_free_firmware);

Annotation

Implementation Notes