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author | Russell King <rmk@dyn-67.arm.linux.org.uk> | 2005-11-09 17:23:39 (GMT) |
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committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2005-11-09 17:23:39 (GMT) |
commit | 00d3dcdd96646be6059cc21f2efa94c4edc1eda5 (patch) | |
tree | 0e45a3e4cb62bbd45e6a9a117a78bd911f346dbe /drivers/base/platform.c | |
parent | 330d57fb98a916fa8e1363846540dd420e99499a (diff) | |
download | linux-fsl-qoriq-00d3dcdd96646be6059cc21f2efa94c4edc1eda5.tar.xz |
[DRIVER MODEL] Add platform_driver
Introduce struct platform_driver. This allows the platform device
driver methods to be passed a platform_device structure instead of
instead of a plain device structure, and therefore requiring casting
in every platform driver.
We introduce this in such a way that any existing platform drivers
registered directly via driver_register continue to work as before,
thereby allowing a gradual conversion to the new platform_driver
methods.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/base/platform.c')
-rw-r--r-- | drivers/base/platform.c | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/drivers/base/platform.c b/drivers/base/platform.c index 6d4736e..8827daf 100644 --- a/drivers/base/platform.c +++ b/drivers/base/platform.c @@ -20,6 +20,8 @@ #include "base.h" +#define to_platform_driver(drv) (container_of((drv), struct platform_driver, driver)) + struct device platform_bus = { .bus_id = "platform", }; @@ -354,6 +356,77 @@ error: return ERR_PTR(retval); } +static int platform_drv_probe(struct device *_dev) +{ + struct platform_driver *drv = to_platform_driver(_dev->driver); + struct platform_device *dev = to_platform_device(_dev); + + return drv->probe(dev); +} + +static int platform_drv_remove(struct device *_dev) +{ + struct platform_driver *drv = to_platform_driver(_dev->driver); + struct platform_device *dev = to_platform_device(_dev); + + return drv->remove(dev); +} + +static void platform_drv_shutdown(struct device *_dev) +{ + struct platform_driver *drv = to_platform_driver(_dev->driver); + struct platform_device *dev = to_platform_device(_dev); + + drv->shutdown(dev); +} + +static int platform_drv_suspend(struct device *_dev, pm_message_t state) +{ + struct platform_driver *drv = to_platform_driver(_dev->driver); + struct platform_device *dev = to_platform_device(_dev); + + return drv->suspend(dev, state); +} + +static int platform_drv_resume(struct device *_dev) +{ + struct platform_driver *drv = to_platform_driver(_dev->driver); + struct platform_device *dev = to_platform_device(_dev); + + return drv->resume(dev); +} + +/** + * platform_driver_register + * @drv: platform driver structure + */ +int platform_driver_register(struct platform_driver *drv) +{ + drv->driver.bus = &platform_bus_type; + if (drv->probe) + drv->driver.probe = platform_drv_probe; + if (drv->remove) + drv->driver.remove = platform_drv_remove; + if (drv->shutdown) + drv->driver.shutdown = platform_drv_shutdown; + if (drv->suspend) + drv->driver.suspend = platform_drv_suspend; + if (drv->resume) + drv->driver.resume = platform_drv_resume; + return driver_register(&drv->driver); +} +EXPORT_SYMBOL_GPL(platform_driver_register); + +/** + * platform_driver_unregister + * @drv: platform driver structure + */ +void platform_driver_unregister(struct platform_driver *drv) +{ + driver_unregister(&drv->driver); +} +EXPORT_SYMBOL_GPL(platform_driver_unregister); + /** * platform_match - bind platform device to platform driver. |