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[TC] MIPS: TURBOchannel update to the driver model
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This is a set of changes to convert support for the TURBOchannel bus to the
driver model.  It implements the usual set of calls similar to what other bus
drivers have: tc_register_driver(), tc_unregister_driver(), etc.  All the
platform-specific bits have been removed and headers from asm-mips/dec/ have
been merged into linux/tc.h, which should be included by drivers.

Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Maciej W. Rozycki authored and Ralf Baechle committed Feb 9, 2007
1 parent 5986a2e commit b454cc6
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5 changes: 5 additions & 0 deletions MAINTAINERS
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Expand Up @@ -3287,6 +3287,11 @@ L: vtun@office.satix.net
W: http://vtun.sourceforge.net/tun
S: Maintained

TURBOCHANNEL SUBSYSTEM
P: Maciej W. Rozycki
M: macro@linux-mips.org
S: Maintained

U14-34F SCSI DRIVER
P: Dario Ballabio
M: ballabio_dario@emc.com
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2 changes: 1 addition & 1 deletion drivers/tc/Makefile
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Expand Up @@ -4,7 +4,7 @@

# Object file lists.

obj-$(CONFIG_TC) += tc.o
obj-$(CONFIG_TC) += tc.o tc-driver.o
obj-$(CONFIG_ZS) += zs.o
obj-$(CONFIG_VT) += lk201.o lk201-map.o lk201-remap.o

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110 changes: 110 additions & 0 deletions drivers/tc/tc-driver.c
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@@ -0,0 +1,110 @@
/*
* TURBOchannel driver services.
*
* Copyright (c) 2005 James Simmons
* Copyright (c) 2006 Maciej W. Rozycki
*
* Loosely based on drivers/dio/dio-driver.c and
* drivers/pci/pci-driver.c.
*
* This file is subject to the terms and conditions of the GNU
* General Public License. See the file "COPYING" in the main
* directory of this archive for more details.
*/

#include <linux/init.h>
#include <linux/module.h>
#include <linux/tc.h>

/**
* tc_register_driver - register a new TC driver
* @drv: the driver structure to register
*
* Adds the driver structure to the list of registered drivers
* Returns a negative value on error, otherwise 0.
* If no error occurred, the driver remains registered even if
* no device was claimed during registration.
*/
int tc_register_driver(struct tc_driver *tdrv)
{
return driver_register(&tdrv->driver);
}
EXPORT_SYMBOL(tc_register_driver);

/**
* tc_unregister_driver - unregister a TC driver
* @drv: the driver structure to unregister
*
* Deletes the driver structure from the list of registered TC drivers,
* gives it a chance to clean up by calling its remove() function for
* each device it was responsible for, and marks those devices as
* driverless.
*/
void tc_unregister_driver(struct tc_driver *tdrv)
{
driver_unregister(&tdrv->driver);
}
EXPORT_SYMBOL(tc_unregister_driver);

/**
* tc_match_device - tell if a TC device structure has a matching
* TC device ID structure
* @tdrv: the TC driver to earch for matching TC device ID strings
* @tdev: the TC device structure to match against
*
* Used by a driver to check whether a TC device present in the
* system is in its list of supported devices. Returns the matching
* tc_device_id structure or %NULL if there is no match.
*/
const struct tc_device_id *tc_match_device(struct tc_driver *tdrv,
struct tc_dev *tdev)
{
const struct tc_device_id *id = tdrv->id_table;

if (id) {
while (id->name[0] || id->vendor[0]) {
if (strcmp(tdev->name, id->name) == 0 &&
strcmp(tdev->vendor, id->vendor) == 0)
return id;
id++;
}
}
return NULL;
}
EXPORT_SYMBOL(tc_match_device);

/**
* tc_bus_match - Tell if a device structure has a matching
* TC device ID structure
* @dev: the device structure to match against
* @drv: the device driver to search for matching TC device ID strings
*
* Used by a driver to check whether a TC device present in the
* system is in its list of supported devices. Returns 1 if there
* is a match or 0 otherwise.
*/
static int tc_bus_match(struct device *dev, struct device_driver *drv)
{
struct tc_dev *tdev = to_tc_dev(dev);
struct tc_driver *tdrv = to_tc_driver(drv);
const struct tc_device_id *id;

id = tc_match_device(tdrv, tdev);
if (id)
return 1;

return 0;
}

struct bus_type tc_bus_type = {
.name = "tc",
.match = tc_bus_match,
};
EXPORT_SYMBOL(tc_bus_type);

static int __init tc_driver_init(void)
{
return bus_register(&tc_bus_type);
}

postcore_initcall(tc_driver_init);
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