Commit 5025076a authored by Shuah Khan's avatar Shuah Khan Committed by Mauro Carvalho Chehab
Browse files

[media] em28xx-input: implement em28xx_ops: suspend/resume hooks 



Implement em28xx_ops: suspend/resume hooks. em28xx usb driver will
invoke em28xx_ops: suspend and resume hooks for all its extensions
from its suspend() and resume() interfaces.

[m.chehab@samsung.com: Fix a breakage caused by calling a non-existing
 function call: schedule_delayed_work_sync(), and test if IR was defined
 at suspend/resume]

Signed-off-by: default avatarShuah Khan <shuah.kh@samsung.com>
Signed-off-by: default avatarMauro Carvalho Chehab <m.chehab@samsung.com>
parent ca2b46da

drivers/media/usb/em28xx/em28xx-input.c

+37 −0
Original line number Diff line number Diff line
@@ -827,11 +827,48 @@ static int em28xx_ir_fini(struct em28xx *dev) 
	return 0;

}



static int em28xx_ir_suspend(struct em28xx *dev)

{

	struct em28xx_IR *ir = dev->ir;



	if (dev->is_audio_only)

		return 0;



	em28xx_info("Suspending input extension");

	if (ir)

		cancel_delayed_work_sync(&ir->work);

	cancel_delayed_work_sync(&dev->buttons_query_work);

	/* is canceling delayed work sufficient or does the rc event

	   kthread needs stopping? kthread is stopped in

	   ir_raw_event_unregister() */

	return 0;

}



static int em28xx_ir_resume(struct em28xx *dev)

{

	struct em28xx_IR *ir = dev->ir;



	if (dev->is_audio_only)

		return 0;



	em28xx_info("Resuming input extension");

	/* if suspend calls ir_raw_event_unregister(), the should call

	   ir_raw_event_register() */

	if (ir)

		schedule_delayed_work(&ir->work, msecs_to_jiffies(ir->polling));

	if (dev->num_button_polling_addresses)

		schedule_delayed_work(&dev->buttons_query_work,

			       msecs_to_jiffies(dev->button_polling_interval));

	return 0;

}



static struct em28xx_ops rc_ops = {

	.id   = EM28XX_RC,

	.name = "Em28xx Input Extension",

	.init = em28xx_ir_init,

	.fini = em28xx_ir_fini,

	.suspend = em28xx_ir_suspend,

	.resume = em28xx_ir_resume,

};



static int __init em28xx_rc_register(void)