New variable boot_config_lines, version 1.1

Author: infothrill

README.md

@@ -1,7 +1,7 @@
 Ansible role: rpi-boot-config
 =============================
 
-Minimal role to manage config entries in a Raspberry PI [boot config](http://www.raspberrypi.org/documentation/configuration/config-txt.md). After changing the boot config, it will restart the raspberry pi and wait for it to come back. This requires that the *ansible_host* is set correctly in the inventory:
+Minimal role to manage config entries in a Raspberry PI [boot config](http://www.raspberrypi.org/documentation/configuration/config-txt.md). After changing the boot config, it will restart the raspberry pi and wait for it to come back. This requires either the `inventory_hostname` is resolvable or that the `ansible_host` is set correctly in the inventory:
 
 	[all]
 	raspberry ansible_host=192.168.1.101
@@ -17,12 +17,27 @@ Role Variables
 
 Available variables are listed below, along with default values (see defaults/main.yml):
 
-	boot_config: {}
+**boot\_config\_lines**, optional
 
-This is the only variable for this role right now. If used, it has to be a dictionary with key value pairs, each of which will be set in the boot config. Example:
+List of verbatim config lines to be put into `/boot/config.txt` (no assertions about uniqueness are made). Example:
+
+```
+boot_config_lines:
+	- "gpu_mem=196"
+	- "dtoverlay=pi3-disable-wifi"
+	- "dtoverlay=pi3-disable-bt"
+```
+
+
+**boot\_config**, optional
+
+Dictionary where every key translates to a unique setting in `/boot/config.txt`. Example:
+
+```
+boot_config:
+	gpu_mem: '196'
+```
 
-	boot_config:
-		gpu_mem: 196
 
 Dependencies
 ------------
@@ -34,7 +49,17 @@ Example Playbook
 
     - hosts: raspberrypis
       roles:
-	      - { role: rpi_boot_config, boot_config: {'gpu_mem': '196'} }
+	      - { role: rpi_boot_config, boot_config_lines: ['gpu_mem=196'] }
+
+Changelog
+---------
+
+### 1.1
+* added new, optional variable `boot_config_lines`
+
+### 1.0
+* initial release
+
 
 License
 -------

defaults/main.yml

@@ -1,4 +1,8 @@
 ---
 # defaults for rpi-boot-config
+
 boot_config: {}
 #  gpu_mem: 64
+
+boot_config_lines: []
+#  - "gpu_mem=64"

tasks/main.yml

@@ -1,20 +1,30 @@
 ---
 # tasks file for rpi-boot-config
-- name: "adjust /boot/config.txt"
-  lineinfile: line='{{ item.key }}={{ item.value }}'
-    dest=/boot/config.txt
-    regexp="^{{ item.key }}="
+- name: "adjust /boot/config.txt based on boot_config"
+  lineinfile:
+    line: '{{ item.key }}={{ item.value }}'
+    dest: /boot/config.txt
+    regexp: "^{{ item.key }}="
   with_dict: '{{ boot_config }}'
   register: _boot_config
 
+- name: "adjust /boot/config.txt based on boot_config_lines"
+  lineinfile:
+    line: '{{ item }}'
+    dest: /boot/config.txt
+    regexp: "^{{ item }}"
+  with_items: '{{ boot_config_lines }}'
+  register: _boot_config_lines
+
 - name: restart machine
   shell: sleep 2 && shutdown -r now "/boot/config.txt config changed"
   async: 1
   poll: 0
   ignore_errors: true
-  when: _boot_config.changed
+  when: _boot_config.changed or _boot_config_lines.changed
+
 
 - name: waiting for machine to come back
-  local_action: wait_for port=22 host="{{ ansible_host }}" delay=20 timeout=120
+  local_action: wait_for port=22 host="{{ ansible_host|default(inventory_hostname) }}" delay=20 timeout=120
   become: false
-  when: _boot_config.changed
+  when: _boot_config.changed or _boot_config_lines.changed