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Staging: ipack: Implement device matching on the bus level.

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Devices are match based upon their vendor and device ids.  Since
the individual drivers provide a list of supported ids they do not
need to implement the matching themselves.

Signed-off-by: Jens Taprogge <jens.taprogge@taprogge.org>
Signed-off-by: Samuel Iglesias Gonsálvez <siglesias@igalia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jens Taprogge 2012-09-04 17:01:19 +02:00 committed by Greg Kroah-Hartman
parent fdfc8cf5d2
commit 4aa09d47d4
3 changed files with 34 additions and 35 deletions
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24
drivers/staging/ipack/devices/ipoctal.c
View File

@ -777,27 +777,6 @@ static const struct tty_operations ipoctal_fops = {
.hangup = ipoctal_hangup,
};
static int ipoctal_match(struct ipack_device *dev)
{
int res;
unsigned char board_id;
if ((!dev->bus->ops) || (!dev->bus->ops->map_space) ||
(!dev->bus->ops->unmap_space))
return 0;
res = dev->bus->ops->map_space(dev, 0, IPACK_ID_SPACE);
if (res)
return 0;
res = ipoctal_check_model(dev, &board_id);
dev->bus->ops->unmap_space(dev, IPACK_ID_SPACE);
if (!res)
return 1;
return 0;
}
static int ipoctal_probe(struct ipack_device *dev)
{
int res;
@ -858,8 +837,7 @@ static DEFINE_IPACK_DEVICE_TABLE(ipoctal_ids) = {
MODULE_DEVICE_TABLE(ipack, ipoctal_ids);
static const struct ipack_driver_ops ipoctal_drv_ops = {
.match = ipoctal_match,
.probe = ipoctal_probe,
.probe = ipoctal_probe,
.remove = ipoctal_remove,
};

43
drivers/staging/ipack/ipack.c
View File

@ -26,20 +26,43 @@ static void ipack_device_release(struct device *dev)
kfree(device);
}
static int ipack_bus_match(struct device *device, struct device_driver *driver)
static inline const struct ipack_device_id *
ipack_match_one_device(const struct ipack_device_id *id,
const struct ipack_device *device)
{
int ret;
struct ipack_device *dev = to_ipack_dev(device);
struct ipack_driver *drv = to_ipack_driver(driver);
if ((id->format == IPACK_ANY_ID || id->format == device->id_format) &&
(id->vendor == IPACK_ANY_ID || id->vendor == device->id_vendor) &&
(id->device == IPACK_ANY_ID || id->device == device->id_device))
return id;
return NULL;
}
if ((!drv->ops) || (!drv->ops->match))
return -EINVAL;
static const struct ipack_device_id *
ipack_match_id(const struct ipack_device_id *ids, struct ipack_device *idev)
{
if (ids) {
while (ids->vendor || ids->device) {
if (ipack_match_one_device(ids, idev))
return ids;
ids++;
}
}
return NULL;
}
ret = drv->ops->match(dev);
if (ret)
dev->driver = drv;
static int ipack_bus_match(struct device *dev, struct device_driver *drv)
{
struct ipack_device *idev = to_ipack_dev(dev);
struct ipack_driver *idrv = to_ipack_driver(drv);
const struct ipack_device_id *found_id;
return ret;
found_id = ipack_match_id(idrv->id_table, idev);
if (found_id) {
idev->driver = idrv;
return 1;
}
return 0;
}
static int ipack_bus_probe(struct device *device)

2
drivers/staging/ipack/ipack.h
View File

@ -84,13 +84,11 @@ struct ipack_device {
/**
* struct ipack_driver_ops -- callbacks to mezzanine driver for installing/removing one device
*
* @match: Match function
* @probe: Probe function
* @remove: tell the driver that the carrier board wants to remove one device
*/
struct ipack_driver_ops {
int (*match) (struct ipack_device *dev);
int (*probe) (struct ipack_device *dev);
void (*remove) (struct ipack_device *dev);
};