new file mode 100755
@@ -0,0 +1,39 @@
+#!/bin/bash
+
+if [[ $# -lt 1 ]]; then
+ echo "$0 fw_filename"
+ exit 1
+fi
+
+file_in="$1"
+file_out_bin=${file_in}.bin
+
+print_val ()
+{
+ val="$1"
+ printf "0x%.2x" "$val" | xxd -r -p >> ${file_out_bin}
+}
+
+rm -f ${file_out_bin}
+
+size=`cat ${file_in} | wc -w`
+
+checksum=0
+i=1
+for val in `cat ${file_in}`; do
+ val="0x$val"
+ if [[ $i == $size ]]; then
+ # Config_Fresh
+ print_val 0x01
+ elif [[ $i == $((size-1)) ]]; then
+ # Config_Chksum
+ checksum=$(( (~ checksum + 1) & 0xFF))
+ print_val $checksum
+ else
+ checksum=$((checksum + val))
+ print_val $val
+ fi
+ i=$((i+1))
+done
+
+echo "Wrote ${file_out_bin}"
This patch is not meant to be applied. It can be used to test updates to the goodix touchscreen configuration. It provides a bash script to help generate a new configuration starting from the one read from the device. Below are instructions on how to test that the config is correctly updated for goodix 911 touchscreens. For other models you need to replace 911 with your model ID. On the target: - dump current configuration of the device: $ cat /sys/class/input/input4/device/dump_config > goodix_911_cfg On the host: - modify some fields from goodix_911_cfg (e.g. change resolution of x/y axes, maximum reported touch points, switch X,Y axes). For more details check datasheet for format of Configuration Registers. - run tools/touch-goodix-generate-fw.sh on the modified script to obtain a valid config (it needs to recompute the checksum, set Config_Fresh to 1 and generate the binary config firmware image): $ ./tools/touch-goodix-generate-fw.sh goodix_911_cfg - copy goodix_911_cfg.bin on the target in /lib/firmware - when the goodix driver is initialized it will read the new config firmware from /lib/firmware/goodix_911_cfg.bin and write it to the device - check that the new firmware was actually written to the device by reading the config again on the target from /sys/class/input/input4/device/dump_config. Also check that Config_Fresh has been reset to 0. You can also check if the functionality changed in the config has actually changed (reported resolution for x/y has changed, x,y axis are switched, etc.) Signed-off-by: Irina Tirdea <irina.tirdea@intel.com> --- tools/touch-goodix-generate-fw.sh | 39 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 39 insertions(+) create mode 100755 tools/touch-goodix-generate-fw.sh