V4L/DVB: ir-core: Add callbacks for input/evdev open/close on IR core

Especially when IR needs to do polling, it generates lots of wakeups per
second. This makes no sense, if the input event device is closed.

Adds a callback handler to the IR hardware driver, to allow registering
an open/close ops.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

2 files changed, 3 insertions, 0 deletions

diff --git a/include/media/ir-common.h b/include/media/ir-common.h
index 87f2ec78deb8..e403a9a5281a 100644
--- a/include/media/ir-common.h
+++ b/include/media/ir-common.h
@@ -50,6 +50,7 @@ struct card_ir {
         struct ir_input_state   ir;
         char                    name[32];
         char                    phys[32];
+        int                     users;
 
         u32                     running:1;
         struct ir_dev_props     props;
diff --git a/include/media/ir-core.h b/include/media/ir-core.h
index c704fa7cc11e..9a2f3084ffec 100644
--- a/include/media/ir-core.h
+++ b/include/media/ir-core.h
@@ -56,6 +56,8 @@ struct ir_dev_props {
         unsigned long allowed_protos;
         void            *priv;
         int (*change_protocol)(void *priv, u64 ir_type);
+        int (*open)(void *priv);
+        void (*close)(void *priv);
 };
 
 struct ir_raw_event {