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drivercore: Add of_match_table to the common device drivers

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OF-style matching can be available to any device, on any type of bus.
This patch allows any driver to provide an OF match table when CONFIG_OF
is enabled so that drivers can be bound against devices described in
the device tree.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Grant Likely 2010-04-13 16:13:01 -07:00
parent 173b3a7a05
commit 597b9d1e44
4 changed files with 14 additions and 7 deletions
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5
arch/powerpc/kernel/ibmebus.c
View file

@ -201,8 +201,11 @@ static int ibmebus_create_devices(const struct of_device_id *matches)
int ibmebus_register_driver(struct of_platform_driver *drv)
{
if (!drv->driver.of_match_table)
drv->driver.of_match_table = drv->match_table;
/* If the driver uses devices that ibmebus doesn't know, add them */
ibmebus_create_devices(drv->match_table);
ibmebus_create_devices(drv->driver.of_match_table);
return of_register_driver(drv, &ibmebus_bus_type);
}

5
drivers/macintosh/macio_asic.c
View file

@ -40,8 +40,7 @@ static struct macio_chip *macio_on_hold;
static int macio_bus_match(struct device *dev, struct device_driver *drv)
{
struct macio_dev * macio_dev = to_macio_device(dev);
struct macio_driver * macio_drv = to_macio_driver(drv);
const struct of_device_id * matches = macio_drv->match_table;
const struct of_device_id * matches = drv->of_match_table;
if (!matches)
return 0;
@ -84,7 +83,7 @@ static int macio_device_probe(struct device *dev)
macio_dev_get(macio_dev);
match = of_match_device(drv->match_table, &macio_dev->ofdev);
match = of_match_device(drv->driver.of_match_table, &macio_dev->ofdev);
if (match)
error = drv->probe(macio_dev, match);
if (error)

7
drivers/of/platform.c
View file

@ -22,8 +22,7 @@ extern struct device_attribute of_platform_device_attrs[];
static int of_platform_bus_match(struct device *dev, struct device_driver *drv)
{
struct of_device *of_dev = to_of_device(dev);
struct of_platform_driver *of_drv = to_of_platform_driver(drv);
const struct of_device_id *matches = of_drv->match_table;
const struct of_device_id *matches = drv->of_match_table;
if (!matches)
return 0;
@ -46,7 +45,7 @@ static int of_platform_device_probe(struct device *dev)
of_dev_get(of_dev);
match = of_match_device(drv->match_table, of_dev);
match = of_match_device(drv->driver.of_match_table, of_dev);
if (match)
error = drv->probe(of_dev, match);
if (error)
@ -391,6 +390,8 @@ int of_register_driver(struct of_platform_driver *drv, struct bus_type *bus)
drv->driver.name = drv->name;
if (!drv->driver.owner)
drv->driver.owner = drv->owner;
if (!drv->driver.of_match_table)
drv->driver.of_match_table = drv->match_table;
drv->driver.bus = bus;
/* register with core */

4
include/linux/device.h
View file

@ -129,6 +129,10 @@ struct device_driver {
bool suppress_bind_attrs; /* disables bind/unbind via sysfs */
#if defined(CONFIG_OF)
const struct of_device_id *of_match_table;
#endif
int (*probe) (struct device *dev);
int (*remove) (struct device *dev);
void (*shutdown) (struct device *dev);