diff options
author | Maciej W. Rozycki <macro@linux-mips.org> | 2007-02-05 16:28:25 -0800 |
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committer | Ralf Baechle <ralf@linux-mips.org> | 2007-02-09 16:23:15 +0000 |
commit | b454cc6636d254fbf6049b73e9560aee76fb04a3 (patch) | |
tree | 5d3d0067ba49fa9e7bb2d6590db3ef8f3c1f499f /drivers/tc/tc-driver.c | |
parent | 5986a2ec35836a878350c54af4bd91b1de6abc59 (diff) |
[TC] MIPS: TURBOchannel update to the driver model
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>
Diffstat (limited to 'drivers/tc/tc-driver.c')
-rw-r--r-- | drivers/tc/tc-driver.c | 110 |
1 files changed, 110 insertions, 0 deletions
diff --git a/drivers/tc/tc-driver.c b/drivers/tc/tc-driver.c new file mode 100644 index 00000000000..16b5bae63c7 --- /dev/null +++ b/drivers/tc/tc-driver.c @@ -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); |