diff options
author | Russell King <rmk@dyn-67.arm.linux.org.uk> | 2005-11-09 12:23:39 -0500 |
---|---|---|
committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2005-11-09 12:23:39 -0500 |
commit | 00d3dcdd96646be6059cc21f2efa94c4edc1eda5 (patch) | |
tree | 0e45a3e4cb62bbd45e6a9a117a78bd911f346dbe /drivers/base/platform.c | |
parent | 330d57fb98a916fa8e1363846540dd420e99499a (diff) |
[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 6d4736e89f1..8827dafba94 100644 --- a/drivers/base/platform.c +++ b/drivers/base/platform.c | |||
@@ -20,6 +20,8 @@ | |||
20 | 20 | ||
21 | #include "base.h" | 21 | #include "base.h" |
22 | 22 | ||
23 | #define to_platform_driver(drv) (container_of((drv), struct platform_driver, driver)) | ||
24 | |||
23 | struct device platform_bus = { | 25 | struct device platform_bus = { |
24 | .bus_id = "platform", | 26 | .bus_id = "platform", |
25 | }; | 27 | }; |
@@ -354,6 +356,77 @@ error: | |||
354 | return ERR_PTR(retval); | 356 | return ERR_PTR(retval); |
355 | } | 357 | } |
356 | 358 | ||
359 | static int platform_drv_probe(struct device *_dev) | ||
360 | { | ||
361 | struct platform_driver *drv = to_platform_driver(_dev->driver); | ||
362 | struct platform_device *dev = to_platform_device(_dev); | ||
363 | |||
364 | return drv->probe(dev); | ||
365 | } | ||
366 | |||
367 | static int platform_drv_remove(struct device *_dev) | ||
368 | { | ||
369 | struct platform_driver *drv = to_platform_driver(_dev->driver); | ||
370 | struct platform_device *dev = to_platform_device(_dev); | ||
371 | |||
372 | return drv->remove(dev); | ||
373 | } | ||
374 | |||
375 | static void platform_drv_shutdown(struct device *_dev) | ||
376 | { | ||
377 | struct platform_driver *drv = to_platform_driver(_dev->driver); | ||
378 | struct platform_device *dev = to_platform_device(_dev); | ||
379 | |||
380 | drv->shutdown(dev); | ||
381 | } | ||
382 | |||
383 | static int platform_drv_suspend(struct device *_dev, pm_message_t state) | ||
384 | { | ||
385 | struct platform_driver *drv = to_platform_driver(_dev->driver); | ||
386 | struct platform_device *dev = to_platform_device(_dev); | ||
387 | |||
388 | return drv->suspend(dev, state); | ||
389 | } | ||
390 | |||
391 | static int platform_drv_resume(struct device *_dev) | ||
392 | { | ||
393 | struct platform_driver *drv = to_platform_driver(_dev->driver); | ||
394 | struct platform_device *dev = to_platform_device(_dev); | ||
395 | |||
396 | return drv->resume(dev); | ||
397 | } | ||
398 | |||
399 | /** | ||
400 | * platform_driver_register | ||
401 | * @drv: platform driver structure | ||
402 | */ | ||
403 | int platform_driver_register(struct platform_driver *drv) | ||
404 | { | ||
405 | drv->driver.bus = &platform_bus_type; | ||
406 | if (drv->probe) | ||
407 | drv->driver.probe = platform_drv_probe; | ||
408 | if (drv->remove) | ||
409 | drv->driver.remove = platform_drv_remove; | ||
410 | if (drv->shutdown) | ||
411 | drv->driver.shutdown = platform_drv_shutdown; | ||
412 | if (drv->suspend) | ||
413 | drv->driver.suspend = platform_drv_suspend; | ||
414 | if (drv->resume) | ||
415 | drv->driver.resume = platform_drv_resume; | ||
416 | return driver_register(&drv->driver); | ||
417 | } | ||
418 | EXPORT_SYMBOL_GPL(platform_driver_register); | ||
419 | |||
420 | /** | ||
421 | * platform_driver_unregister | ||
422 | * @drv: platform driver structure | ||
423 | */ | ||
424 | void platform_driver_unregister(struct platform_driver *drv) | ||
425 | { | ||
426 | driver_unregister(&drv->driver); | ||
427 | } | ||
428 | EXPORT_SYMBOL_GPL(platform_driver_unregister); | ||
429 | |||
357 | 430 | ||
358 | /** | 431 | /** |
359 | * platform_match - bind platform device to platform driver. | 432 | * platform_match - bind platform device to platform driver. |