rpi-config: Add ENABLE_IR variable for infrared

Users who want infrared device tree overlays gpio-ir and
gpio-ir-tx to be set in config.txt can now easily do it through
variable ENABLE_IR, for example in local.conf:

ENABLE_IR = "1"

By default the GPIO pin for gpio-ir is set to 18 and the pin for
gpio-ir-tx is 17. Both pins can be easily changed by modifying
variables GPIO_IR and GPIO_IR_TX (for example in local.conf).

Signed-off-by: Leon Anavi <leon.anavi@konsulko.com>

1 files changed, 9 insertions, 0 deletions

diff --git a/recipes-bsp/bootfiles/rpi-config_git.bb b/recipes-bsp/bootfiles/rpi-config_git.bb
index 5315676..d964de5 100644
--- a/recipes-bsp/bootfiles/rpi-config_git.bb
+++ b/recipes-bsp/bootfiles/rpi-config_git.bb
@@ -25,6 +25,8 @@ PITFT35r="${@bb.utils.contains("MACHINE_FEATURES", "pitft35r", "1", "0", d)}"
 
 VC4GRAPHICS="${@bb.utils.contains("MACHINE_FEATURES", "vc4graphics", "1", "0", d)}"
 VC4DTBO ?= "vc4-kms-v3d"
+GPIO_IR ?= "18"
+GPIO_IR_TX ?= "17"
 
 inherit deploy nopackages
 
@@ -161,6 +163,13 @@ do_deploy() {
         echo "enable_uart=1" >>${DEPLOYDIR}/bcm2835-bootfiles/config.txt
     fi
 
+    # Infrared support
+    if [ "${ENABLE_IR}" = "1" ]; then
+        echo "# Enable infrared" >>${DEPLOYDIR}/bcm2835-bootfiles/config.txt
+        echo "dtoverlay=gpio-ir,gpio_pin=${GPIO_IR}" >>${DEPLOYDIR}/bcm2835-bootfiles/config.txt
+        echo "dtoverlay=gpio-ir-tx,gpio_pin=${GPIO_IR_TX}" >>${DEPLOYDIR}/bcm2835-bootfiles/config.txt
+    fi
+
     # VC4 Graphics support
     if [ "${VC4GRAPHICS}" = "1" ]; then
         echo "# Enable VC4 Graphics" >> ${DEPLOYDIR}/bcm2835-bootfiles/config.txt