| [Unit] |
| Description=Enable fans |
| ConditionKernelCommandLine=|czechlight=sdn-inline-g2 |
| ConditionKernelCommandLine=|czechlight=sdn-roadm-add-drop-g2 |
| ConditionKernelCommandLine=|czechlight=sdn-roadm-coherent-a-d-g2 |
| ConditionKernelCommandLine=|czechlight=sdn-roadm-hires-add-drop-g2 |
| ConditionKernelCommandLine=|czechlight=sdn-roadm-line-g2 |
| ConditionKernelCommandLine=|czechlight=sdn-roadm-hires-add-drop-g2 |
| |
| [Service] |
| Type=oneshot |
| RemainAfterExit=yes |
| # The driver only supports enabling RPM input when setting RPM mode. It also does not reset the RPM input when switching back to PWM mode. |
| # So, we first enable RPM mode (2), this sets the TACH_ENABLE bit and then set PWM mode, because RPM mode doesn't work anyway. |
| ExecStart=/bin/bash -c 'for FAN in /sys/bus/i2c/devices/1-0020/hwmon/hwmon*/pwm{1,2,3,4}_enable; do echo 2 > "$FAN"; echo 1 > "$FAN"; done' |