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>

1 files changed, 17 insertions, 0 deletions

diff --git a/drivers/media/IR/ir-keytable.c b/drivers/media/IR/ir-keytable.c
index fcb0f0c..99cad82 100644
--- a/drivers/media/IR/ir-keytable.c
+++ b/drivers/media/IR/ir-keytable.c
@@ -446,6 +446,19 @@ void ir_keydown(struct input_dev *dev, int scancode)
 }
 EXPORT_SYMBOL_GPL(ir_keydown);
 
+static int ir_open(struct input_dev *input_dev)
+{
+	struct ir_input_dev *ir_dev = input_get_drvdata(input_dev);
+
+	return ir_dev->props->open(ir_dev->props->priv);
+}
+
+static void ir_close(struct input_dev *input_dev)
+{
+	struct ir_input_dev *ir_dev = input_get_drvdata(input_dev);
+
+	ir_dev->props->close(ir_dev->props->priv);
+}
 
 /**
  * ir_input_register() - sets the IR keycode table and add the handlers
@@ -495,6 +508,10 @@ int ir_input_register(struct input_dev *input_dev,
 
 	ir_copy_table(&ir_dev->rc_tab, rc_tab);
 	ir_dev->props = props;
+	if (props && props->open)
+		input_dev->open = ir_open;
+	if (props && props->close)
+		input_dev->close = ir_close;
 
 	/* set the bits for the keys */
 	IR_dprintk(1, "key map size: %d\n", rc_tab->size);