led-daemon: use different GPIO base for each platform

PandABlocks · May 20, 2021 · f25cb3b · f25cb3b
1 parent 11f4cbd
commit f25cb3b
Showing 1 changed file with 12 additions and 2 deletions.
diff --git a/rootfs/led-daemon/led-daemon b/rootfs/led-daemon/led-daemon
@@ -14,9 +14,19 @@ GRAIN=100000        # Our timing granularity: 100ms in microseconds
 # LED initialisation
 
 # The LED GPIO numbers are determined from the physical GPIO numbers (50 for the
-# STA status LED, 51 for the DIA diagnostic LED), but an offset of 906 is added
+# STA status LED, 51 for the DIA diagnostic LED), but an offset is added
 # for somewhat mysterious reasons.
-GPIO_BASE=906
+ZYNQ_GPIO_BASE=906
+ZYNQMP_GPIO_BASE=338
+if [ -e /sys/class/gpio/gpiochip${ZYNQ_GPIO_BASE} ]; then
+    GPIO_BASE=${ZYNQ_GPIO_BASE}
+elif [ -e /sys/class/gpio/gpiochip${ZYNQMP_GPIO_BASE} ]; then
+    GPIO_BASE=${ZYNQMP_GPIO_BASE}
+else
+    echo "Unknown GPIO chip"
+    exit -1
+fi
+
 STA_LED_GPIO=$((GPIO_BASE + 51))
 DIA_LED_GPIO=$((GPIO_BASE + 50))