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authorShuah Khan <shuah.kh@samsung.com>2014-02-21 21:50:16 -0300
committerMauro Carvalho Chehab <m.chehab@samsung.com>2014-03-03 06:46:25 -0300
commit5025076aadfeaf774f341b852b997f2bc718da6a (patch)
tree576014647316baca40e8030867460ec2e2e2e705 /drivers/media/usb/em28xx/em28xx-input.c
parentca2b46dacbf5caaa070c0195c794a35b49b189d1 (diff)
downloadlinux-5025076aadfeaf774f341b852b997f2bc718da6a.tar.bz2
[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: Shuah Khan <shuah.kh@samsung.com> Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
Diffstat (limited to 'drivers/media/usb/em28xx/em28xx-input.c')
-rw-r--r--drivers/media/usb/em28xx/em28xx-input.c37
1 files changed, 37 insertions, 0 deletions
diff --git a/drivers/media/usb/em28xx/em28xx-input.c b/drivers/media/usb/em28xx/em28xx-input.c
index 048e5b680499..47a2c1dcccbf 100644
--- a/drivers/media/usb/em28xx/em28xx-input.c
+++ b/drivers/media/usb/em28xx/em28xx-input.c
@@ -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)