[PATCH 23/49] rc-loopback: add RCIOCGIRRX ioctl support

["David Härdeman" <david@hardeman.nu>]

As an example, this patch adds support for the new RCIOCGIRRX ioctl
to rc-loopback.

Signed-off-by: David Härdeman <david@hardeman.nu>
---
 drivers/media/rc/rc-loopback.c |   22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/drivers/media/rc/rc-loopback.c b/drivers/media/rc/rc-loopback.c
index bc67d2f..565318c 100644
--- a/drivers/media/rc/rc-loopback.c
+++ b/drivers/media/rc/rc-loopback.c
@@ -181,6 +181,27 @@ static int loop_set_carrier_report(struct rc_dev *dev, int enable)
 	return 0;
 }
 
+/**
+ * loop_get_ir_rx() - returns the current RX settings
+ * @dev: the &struct rc_dev to get the settings for
+ * @rx: the &struct rc_ir_rx to fill in with the current settings
+ *
+ * This function is used to return the current RX settings.
+ */
+static void loop_get_ir_rx(struct rc_dev *dev, struct rc_ir_rx *rx)
+{
+	struct loopback_dev *lodev = dev->priv;
+
+	rx->rx_supported = RXMASK_REGULAR | RXMASK_LEARNING;
+	rx->rx_connected = RXMASK_REGULAR | RXMASK_LEARNING;
+	rx->rx_enabled = lodev->learning ? RXMASK_LEARNING : RXMASK_REGULAR;
+	rx->rx_learning = RXMASK_LEARNING;
+	rx->freq_min = lodev->rxcarriermin;
+	rx->freq_max = lodev->rxcarriermax;
+	rx->duty_min = 1;
+	rx->duty_max = 99;
+}
+
 static int __init loop_init(void)
 {
 	struct rc_dev *rc;
@@ -214,6 +235,7 @@ static int __init loop_init(void)
 	rc->s_idle		= loop_set_idle;
 	rc->s_learning_mode	= loop_set_learning_mode;
 	rc->s_carrier_report	= loop_set_carrier_report;
+	rc->get_ir_rx		= loop_get_ir_rx;
 
 	loopdev.txmask		= RXMASK_REGULAR;
 	loopdev.txcarrier	= 36000;