media: lirc: scancode rc devices should have a lirc device too

Now that the lirc interface supports scancodes, RC scancode devices
can also have a lirc device. The only receiving feature they will have
enabled is LIRC_CAN_REC_SCANCODE.

Note that CEC devices have no lirc device, since they can be controlled
from their /dev/cecN chardev.
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

drivers/media/rc/ir-lirc-codec.c

@@ -304,6 +304,9 @@ static long ir_lirc_ioctl(struct file *filep, unsigned int cmd,
 
 	switch (cmd) {
 	case LIRC_GET_FEATURES:
+		if (dev->driver_type == RC_DRIVER_SCANCODE)
+			val |= LIRC_CAN_REC_SCANCODE;
+
 		if (dev->driver_type == RC_DRIVER_IR_RAW) {
 			val |= LIRC_CAN_REC_MODE2 | LIRC_CAN_REC_SCANCODE;
 			if (dev->rx_resolution)
@@ -344,11 +347,19 @@ static long ir_lirc_ioctl(struct file *filep, unsigned int cmd,
 		break;
 
 	case LIRC_SET_REC_MODE:
-		if (dev->driver_type == RC_DRIVER_IR_RAW_TX)
+		switch (dev->driver_type) {
+		case RC_DRIVER_IR_RAW_TX:
 			return -ENOTTY;
-
-		if (!(val == LIRC_MODE_MODE2 || val == LIRC_MODE_SCANCODE))
-			return -EINVAL;
+		case RC_DRIVER_SCANCODE:
+			if (val != LIRC_MODE_SCANCODE)
+				return -EINVAL;
+			break;
+		case RC_DRIVER_IR_RAW:
+			if (!(val == LIRC_MODE_MODE2 ||
+			      val == LIRC_MODE_SCANCODE))
+				return -EINVAL;
+			break;
+		}
 
 		dev->rec_mode = val;
 		return 0;

drivers/media/rc/lirc_dev.c

@@ -57,7 +57,10 @@ int ir_lirc_register(struct rc_dev *dev)
 	dev->lirc_dev.release = lirc_release_device;
 	dev->send_mode = LIRC_MODE_PULSE;
 
-	dev->rec_mode = LIRC_MODE_MODE2;
+	if (dev->driver_type == RC_DRIVER_SCANCODE)
+		dev->rec_mode = LIRC_MODE_SCANCODE;
+	else
+		dev->rec_mode = LIRC_MODE_MODE2;
 
 	if (dev->driver_type == RC_DRIVER_IR_RAW) {
 		if (kfifo_alloc(&dev->rawir, MAX_IR_EVENT_SIZE, GFP_KERNEL))

drivers/media/rc/rc-main.c

@@ -1814,7 +1814,7 @@ int rc_register_device(struct rc_dev *dev)
 	}
 
 	/* Ensure that the lirc kfifo is setup before we start the thread */
-	if (dev->driver_type != RC_DRIVER_SCANCODE) {
+	if (dev->allowed_protocols != RC_PROTO_BIT_CEC) {
 		rc = ir_lirc_register(dev);
 		if (rc < 0)
 			goto out_rx;
@@ -1835,7 +1835,7 @@ int rc_register_device(struct rc_dev *dev)
 	return 0;
 
 out_lirc:
-	if (dev->driver_type != RC_DRIVER_SCANCODE)
+	if (dev->allowed_protocols != RC_PROTO_BIT_CEC)
 		ir_lirc_unregister(dev);
 out_rx:
 	rc_free_rx_device(dev);
@@ -1898,7 +1898,7 @@ void rc_unregister_device(struct rc_dev *dev)
 	 * lirc device should be freed with dev->registered = false, so
 	 * that userspace polling will get notified.
 	 */
-	if (dev->driver_type != RC_DRIVER_SCANCODE)
+	if (dev->allowed_protocols != RC_PROTO_BIT_CEC)
 		ir_lirc_unregister(dev);
 
 	device_del(&dev->dev);