pitft: Add basic support for PiTFT

Add basic support for PiTFT display by using device-trees.

In order get it working below configurations must be active in
local.conf:

MACHINE_FEATURES += "pitft"
 - This will enable SPI bus and i2c device-trees, it will also setup
   framebuffer for console and x server on PiTFT.

[Support #70]

Signed-off-by: Petter Mabäcker <petter@technux.se>
Signed-off-by: Andrei Gherzan <andrei@gherzan.ro>

1 files changed, 4 insertions, 2 deletions

diff --git a/recipes-bsp/bootfiles/rpi-config_git.bb b/recipes-bsp/bootfiles/rpi-config_git.bb
index 138cb37..bfe00d1 100644
--- a/recipes-bsp/bootfiles/rpi-config_git.bb
+++ b/recipes-bsp/bootfiles/rpi-config_git.bb
@@ -15,6 +15,8 @@ S = "${WORKDIR}/git"
 
 PR = "r4"
 
+PITFT="${@bb.utils.contains("MACHINE_FEATURES", "pitft", "1", "0", d)}"
+
 inherit deploy
 
 do_deploy() {
@@ -71,12 +73,12 @@ do_deploy() {
     fi
 
     # SPI bus support
-    if [ -n "${ENABLE_SPI_BUS}" ]; then
+    if [ -n "${ENABLE_SPI_BUS}" ] || [ "${PITFT}" = "1" ]; then
         echo "# Enable SPI bus" >>${DEPLOYDIR}/bcm2835-bootfiles/config.txt
         echo "dtparam=spi=on" >>${DEPLOYDIR}/bcm2835-bootfiles/config.txt
     fi
 
-    if [ -n "${ENABLE_I2C}" ]; then
+    if [ -n "${ENABLE_I2C}" ] || [ "${PITFT}" = "1" ]; then
         echo "# Enable I2C" >>${DEPLOYDIR}/bcm2835-bootfiles/config.txt
         echo "dtparam=i2c1=on" >>${DEPLOYDIR}/bcm2835-bootfiles/config.txt
         echo "dtparam=i2c_arm=on" >>${DEPLOYDIR}/bcm2835-bootfiles/config.txt