V4L/DVB: ir-core: add two functions to report keyup/keydown events

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

2 files changed, 60 insertions, 1 deletions

diff --git a/drivers/media/IR/ir-keytable.c b/drivers/media/IR/ir-keytable.c
index 73fe4bec83bc..e59290febf81 100644
--- a/drivers/media/IR/ir-keytable.c
+++ b/drivers/media/IR/ir-keytable.c
@@ -365,7 +365,7 @@ static int ir_setkeycode(struct input_dev *dev,
  *
  * This routine is used by the input routines when a key is pressed at the
  * IR. The scancode is received and needs to be converted into a keycode.
- * If the key is not found, it returns KEY_UNKNOWN. Otherwise, returns the
+ * If the key is not found, it returns KEY_RESERVED. Otherwise, returns the
  * corresponding keycode from the table.
  */
 u32 ir_g_keycode_from_table(struct input_dev *dev, u32 scancode)
@@ -392,6 +392,61 @@ u32 ir_g_keycode_from_table(struct input_dev *dev, u32 scancode)
 EXPORT_SYMBOL_GPL(ir_g_keycode_from_table);
 
 /**
+ * ir_keyup() - generates input event to cleanup a key press
+ * @input_dev:  the struct input_dev descriptor of the device
+ *
+ * This routine is used by the input routines when a key is pressed at the
+ * IR. It reports a keyup input event via input_report_key().
+ */
+void ir_keyup(struct input_dev *dev)
+{
+        struct ir_input_dev *ir = input_get_drvdata(dev);
+
+        if (!ir->keypressed)
+                return;
+
+        input_report_key(dev, ir->keycode, 0);
+        input_sync(dev);
+        ir->keypressed = 0;
+}
+EXPORT_SYMBOL_GPL(ir_keyup);
+
+/**
+ * ir_keydown() - generates input event for a key press
+ * @input_dev:  the struct input_dev descriptor of the device
+ * @scancode:   the scancode that we're seeking
+ *
+ * This routine is used by the input routines when a key is pressed at the
+ * IR. It gets the keycode for a scancode and reports an input event via
+ * input_report_key().
+ */
+void ir_keydown(struct input_dev *dev, int scancode)
+{
+        struct ir_input_dev *ir = input_get_drvdata(dev);
+
+        u32 keycode = ir_g_keycode_from_table(dev, scancode);
+
+        /* If already sent a keydown, do a keyup */
+        if (ir->keypressed)
+                ir_keyup(dev);
+
+        if (KEY_RESERVED == keycode)
+                return;
+
+        ir->keycode = keycode;
+        ir->keypressed = 1;
+
+        IR_dprintk(1, "%s: key down event, key 0x%04x, scancode 0x%04x\n",
+                dev->name, keycode, scancode);
+
+        input_report_key(dev, ir->keycode, 1);
+        input_sync(dev);
+
+}
+EXPORT_SYMBOL_GPL(ir_keydown);
+
+
+/**
  * ir_input_register() - sets the IR keycode table and add the handlers
  *                          for keymap table get/set
  * @input_dev:  the struct input_dev descriptor of the device
diff --git a/include/media/ir-core.h b/include/media/ir-core.h
index 369969d90779..198fd61f0da9 100644
--- a/include/media/ir-core.h
+++ b/include/media/ir-core.h
@@ -72,6 +72,10 @@ struct ir_input_dev {
         unsigned long                   devno;          /* device number */
         const struct ir_dev_props       *props;         /* Device properties */
         struct ir_raw_event_ctrl        *raw;           /* for raw pulse/space events */
+
+        /* key info - needed by IR keycode handlers */
+        u32                             keycode;        /* linux key code */
+        int                             keypressed;     /* current state */
 };
 
 #define to_ir_input_dev(_attr) container_of(_attr, struct ir_input_dev, attr)