Add support for PiTFT 2.8" with capacitive touch

Add support for the Adafruit PiTFT Plus 320x240 2.8" TFT with
Capacitive Touchscreen, using the same patterns used for the other
versions of the PiTFT screens.

Signed-off-by: Erik Botö <erik.boto@gmail.com>

3 files changed, 8 insertions, 0 deletions

diff --git a/conf/machine/include/rpi-base.inc b/conf/machine/include/rpi-base.inc
index 36a8daf..9772fd9 100644
--- a/conf/machine/include/rpi-base.inc
+++ b/conf/machine/include/rpi-base.inc
@@ -30,6 +30,7 @@ RPI_KERNEL_DEVICETREE_OVERLAYS ?= " \
     overlays/pi3-miniuart-bt.dtbo \
     overlays/pitft22.dtbo \
     overlays/pitft28-resistive.dtbo \
+    overlays/pitft28-capacitive.dtbo \
     overlays/pitft35-resistive.dtbo \
     overlays/pps-gpio.dtbo \
     overlays/rpi-ft5406.dtbo \
diff --git a/docs/extra-build-config.md b/docs/extra-build-config.md
index 1f7ef68..a2b68d8 100644
--- a/docs/extra-build-config.md
+++ b/docs/extra-build-config.md
@@ -204,6 +204,7 @@ modelname should be added as a MACHINE_FEATURES in local.conf like below:
 List of currently supported models:
 * pitft22
 * pitft28r
+* pitft28c
 * pitft35r
 
 ## Misc. display
diff --git a/recipes-bsp/bootfiles/rpi-config_git.bb b/recipes-bsp/bootfiles/rpi-config_git.bb
index 160bc16..5315676 100644
--- a/recipes-bsp/bootfiles/rpi-config_git.bb
+++ b/recipes-bsp/bootfiles/rpi-config_git.bb
@@ -20,6 +20,7 @@ INHIBIT_DEFAULT_DEPS = "1"
 PITFT="${@bb.utils.contains("MACHINE_FEATURES", "pitft", "1", "0", d)}"
 PITFT22="${@bb.utils.contains("MACHINE_FEATURES", "pitft22", "1", "0", d)}"
 PITFT28r="${@bb.utils.contains("MACHINE_FEATURES", "pitft28r", "1", "0", d)}"
+PITFT28c="${@bb.utils.contains("MACHINE_FEATURES", "pitft28c", "1", "0", d)}"
 PITFT35r="${@bb.utils.contains("MACHINE_FEATURES", "pitft35r", "1", "0", d)}"
 
 VC4GRAPHICS="${@bb.utils.contains("MACHINE_FEATURES", "vc4graphics", "1", "0", d)}"
@@ -144,6 +145,11 @@ do_deploy() {
         echo "# Enable PITFT28r display" >>${DEPLOYDIR}/bcm2835-bootfiles/config.txt
         echo "dtoverlay=pitft28-resistive,rotate=90,speed=32000000,txbuflen=32768" >>${DEPLOYDIR}/bcm2835-bootfiles/config.txt
     fi
+    if [ "${PITFT28c}" = "1" ]; then
+        echo "# Enable PITFT28c display" >>${DEPLOYDIR}/bcm2835-bootfiles/config.txt
+        echo "dtoverlay=pitft28-capacitive,rotate=90,speed=32000000,txbuflen=32768" >>${DEPLOYDIR}/bcm2835-bootfiles/config.txt
+        echo "dtoverlay=pitft28-capacitive,touch-swapxy,touch-invx" >>${DEPLOYDIR}/bcm2835-bootfiles/config.txt
+    fi
     if [ "${PITFT35r}" = "1" ]; then
         echo "# Enable PITFT35r display" >>${DEPLOYDIR}/bcm2835-bootfiles/config.txt
         echo "dtoverlay=pitft35-resistive,rotate=90,speed=42000000,fps=20" >>${DEPLOYDIR}/bcm2835-bootfiles/config.txt