Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit dd37eed7 authored by Jeremy Kerr's avatar Jeremy Kerr Committed by Greg Kroah-Hartman
Browse files

drivers/fsi: add driver to device matches 



Driver bind to devices based on the engine types & (optional) versions.

Signed-off-by: default avatarJeremy Kerr <jk@ozlabs.org>
Signed-off-by: default avatarChris Bostic <cbostic@us.ibm.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent fda07a6c

drivers/fsi/fsi-core.c

+21 −0
Original line number Diff line number Diff line
@@ -19,8 +19,29 @@ 


/* FSI core & Linux bus type definitions */



static int fsi_bus_match(struct device *dev, struct device_driver *drv)

{

	struct fsi_device *fsi_dev = to_fsi_dev(dev);

	struct fsi_driver *fsi_drv = to_fsi_drv(drv);

	const struct fsi_device_id *id;



	if (!fsi_drv->id_table)

		return 0;



	for (id = fsi_drv->id_table; id->engine_type; id++) {

		if (id->engine_type != fsi_dev->engine_type)

			continue;

		if (id->version == FSI_VERSION_ANY ||

				id->version == fsi_dev->version)

			return 1;

	}



	return 0;

}



struct bus_type fsi_bus_type = {

	.name		= "fsi",

	.match		= fsi_bus_match,

};

EXPORT_SYMBOL_GPL(fsi_bus_type);

include/linux/fsi.h

+19 −2
Original line number Diff line number Diff line
@@ -19,10 +19,27 @@ 


struct fsi_device {

	struct device		dev;

	u8			engine_type;

	u8			version;

};



struct fsi_device_id {

	u8	engine_type;

	u8	version;

};



#define FSI_VERSION_ANY		0



#define FSI_DEVICE(t) \

	.engine_type = (t), .version = FSI_VERSION_ANY,



#define FSI_DEVICE_VERSIONED(t, v) \

	.engine_type = (t), .version = (v),





struct fsi_driver {

	struct device_driver		drv;

	const struct fsi_device_id	*id_table;

};



#define to_fsi_dev(devp) container_of(devp, struct fsi_device, dev)