---
- hosts: localhost
  become: yes
  vars:
    power_max_multi: 0.90 # should not exceed 1.0, must be a float. note: driver seems to do its own rounding
    power_max: "{{ power_max_b64['content'] | b64decode }}"
    power_cap_float: "{{ power_max |float * power_max_multi }}"
    power_cap: "{{ power_cap_float |int }}"
    card: card0 # default to card0
    base_profiles: # standard tuned profiles available on Fedora, should dynamically discover?
      - balanced
      - desktop
      - latency-performance
      - network-latency
      - network-throughput
      - powersave
      - virtual-host
    amdgpu_profiles: # statically defined mapping of the contents in /sys/class/drm/{{ card }}/device/pp_power_profile_mode
#      - { name: 'bootup_default', value: 0 }
#      - { name: '3D_fullscreen', value: 1 }
      - { name: 'powersaving', value: 2 }
      - { name: 'video', value: 3 }
      - { name: 'VR', value: 4 }
#      - { name: 'compute', value: 5 }
#      - { name: 'custom', value: 6 }
  handlers:
    - name: restart tuned
      ansible.builtin.service:
        name: tuned
        state: restarted
  tasks:
    - name: find hwmon/max power capability file for {{ card }}
      find:
        paths: /sys/class/drm/{{ card }}/device/hwmon
        file_type: file
        recurse: yes
        use_regex: yes
        patterns:
          - '^power1_cap_max$'
      register: hwmon
    - name: get max power capability for {{ card }}
      slurp:
        src: "{{ hwmon.files.0.path }}"
      register: power_max_b64
    - name: ensure tuned is installed
      package:
        name: tuned
        state: present
    - name: create custom profile directories
      file:
        state: directory
        path: /etc/tuned/{{ item.1 }}-amdgpu-{{ item.0.name }}
        mode: "0755"
      with_nested:
        - "{{ amdgpu_profiles }}"
        - "{{ base_profiles }}"
    - name: template custom tuned profiles
      template:
        src: templates/tuned.conf.j2
        dest: /etc/tuned/{{ item.1 }}-amdgpu-{{ item.0.name }}/tuned.conf
        owner: root
        group: root
        mode: "0644"
      with_nested:
        - "{{ amdgpu_profiles }}"
        - "{{ base_profiles }}"
      notify: restart tuned