drivers/macintosh/macio_asic.c

Source file repositories/reference/linux-study-clean/drivers/macintosh/macio_asic.c

File Facts

System
Linux kernel
Corpus path
drivers/macintosh/macio_asic.c
Extension
.c
Size
20858 bytes
Lines
799
Domain
Driver Families
Bucket
drivers/macintosh
Inferred role
Driver Families: operation-table or driver-model contract
Status
pattern 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

static int macio_bus_match(struct device *dev, const struct device_driver *drv)
{
	const struct of_device_id * matches = drv->of_match_table;

	if (!matches) 
		return 0;

	return of_match_device(matches, dev) != NULL;
}

struct macio_dev *macio_dev_get(struct macio_dev *dev)
{
	struct device *tmp;

	if (!dev)
		return NULL;
	tmp = get_device(&dev->ofdev.dev);
	if (tmp)
		return to_macio_device(tmp);
	else
		return NULL;
}

void macio_dev_put(struct macio_dev *dev)
{
	if (dev)
		put_device(&dev->ofdev.dev);
}


static int macio_device_probe(struct device *dev)
{
	int error = -ENODEV;
	struct macio_driver *drv;
	struct macio_dev *macio_dev;
	const struct of_device_id *match;

	drv = to_macio_driver(dev->driver);
	macio_dev = to_macio_device(dev);

	if (!drv->probe)
		return error;

	macio_dev_get(macio_dev);

	match = of_match_device(drv->driver.of_match_table, dev);
	if (match)
		error = drv->probe(macio_dev, match);
	if (error)
		macio_dev_put(macio_dev);

	return error;
}

static void macio_device_remove(struct device *dev)
{
	struct macio_dev * macio_dev = to_macio_device(dev);
	struct macio_driver * drv = to_macio_driver(dev->driver);

	if (dev->driver && drv->remove)
		drv->remove(macio_dev);
	macio_dev_put(macio_dev);
}

static void macio_device_shutdown(struct device *dev)
{
	struct macio_dev * macio_dev = to_macio_device(dev);
	struct macio_driver * drv = to_macio_driver(dev->driver);

	if (dev->driver && drv->shutdown)
		drv->shutdown(macio_dev);
}

static int macio_device_suspend(struct device *dev, pm_message_t state)
{
	struct macio_dev * macio_dev = to_macio_device(dev);
	struct macio_driver * drv = to_macio_driver(dev->driver);

	if (dev->driver && drv->suspend)
		return drv->suspend(macio_dev, state);
	return 0;
}

static int macio_device_resume(struct device * dev)
{
	struct macio_dev * macio_dev = to_macio_device(dev);
	struct macio_driver * drv = to_macio_driver(dev->driver);

	if (dev->driver && drv->resume)
		return drv->resume(macio_dev);

Annotation

Implementation Notes