add brightness control for I2C monitors

bin/brightness-i2c

@@ -0,0 +1,11 @@
+#! /bin/zsh
+
+OPERATOR="${1}"
+AMOUNT="${2}"
+
+BUSES=(${(s/:/)OVER_ENV_MONITORS_I2C})
+
+for BUS in ${BUSES}
+do
+	ddcutil --skip-ddc-checks --noverify --verbose --bus=${BUS} setvcp 0x10 "${OPERATOR}" "${AMOUNT}"
+done

lib/prompt-init

@@ -5,6 +5,12 @@ zmodload zsh/datetime
 OVER_PROMPT_CFG="/etc/over/env/prompt.cfg"
 OVER_PROMPT_TITLE=""
 
+which ddcutil > /dev/null
+if [[ $? -eq 0 ]]; then
+	local I2C_IDS=($(ddcutil detect --terse | grep "I2C bus" | sed "s/^.*-//"))
+	export OVER_ENV_MONITORS_I2C=${(j|:|)I2C_IDS}
+fi
+
 if [[ -a "$OVER_PROMPT_CFG" ]]; then
 	source "$OVER_PROMPT_CFG"
 fi