From 8a1bb6706be11cd9c1e683e6d242accad0346d6b Mon Sep 17 00:00:00 2001
From: Tim Gesthuizen <tim.gesthuizen@yahoo.de>
Date: Sat, 5 Jan 2019 23:28:18 +0100
Subject: [PATCH 6/7] gnu: Add inputattach service

Add a service that runs inputattach as a daemon to translate events from
serial ports.

* gnu/local.mk: Add gnu/services/hardware.scm
* gnu/services/hardware.scm (<inputattach-configuration>): New record type
* gnu/services/hardware.scm (inputattach-service-type): New service type
* gnu/services/hardware.scm (inputattach-service): New function

squash
---
 gnu/local.mk              |  1 +
 gnu/services/hardware.scm | 71 +++++++++++++++++++++++++++++++++++++++
 2 files changed, 72 insertions(+)
 create mode 100644 gnu/services/hardware.scm

diff --git a/gnu/local.mk b/gnu/local.mk
index 7c319b727..d9e06bd17 100644
--- a/gnu/local.mk
+++ b/gnu/local.mk
@@ -486,6 +486,7 @@ GNU_SYSTEM_MODULES =				\
   %D%/services/docker.scm			\
   %D%/services/authentication.scm		\
   %D%/services/games.scm			\
+  %D%/services/hardware.scm                     \
   %D%/services/kerberos.scm			\
   %D%/services/lirc.scm				\
   %D%/services/virtualization.scm		\
diff --git a/gnu/services/hardware.scm b/gnu/services/hardware.scm
new file mode 100644
index 000000000..f924fb34d
--- /dev/null
+++ b/gnu/services/hardware.scm
@@ -0,0 +1,71 @@
+;;; GNU Guix --- Functional package management for GNU
+;;; Copyright © 2019 Tim Gesthuizen <tim.gesthuizen@yahoo.de>
+;;;
+;;; This file is part of GNU Guix.
+;;;
+;;; GNU Guix is free software; you can redistribute it and/or modify it
+;;; under the terms of the GNU General Public License as published by
+;;; the Free Software Foundation; either version 3 of the License, or (at
+;;; your option) any later version.
+;;;
+;;; GNU Guix is distributed in the hope that it will be useful, but
+;;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;;; GNU General Public License for more details.
+;;;
+;;; You should have received a copy of the GNU General Public License
+;;; along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.
+
+(define-module (gnu services hardware)
+  #:use-module (gnu services)
+  #:use-module (gnu services shepherd)
+  #:use-module (gnu packages admin)
+  #:use-module (gnu packages firmware)
+  #:use-module (guix records)
+  #:use-module (guix gexp)
+  #:use-module (ice-9 match)
+  #:export (inputattach-configuration
+            inputattach-configuration?
+            inputattach-service-type
+            inputattach-service))
+
+(define-record-type* <inputattach-configuration>
+  inputattach-configuration
+  make-inputattach-configuration
+  inputattach-configuration?
+  (devicetype inputattach-configuration-devicetype
+              (default "wacom"))
+  (device inputattach-configuration-device
+          (default "/dev/ttyS0"))
+  (log-file inputattach-configuration-log-file
+            (default #f)))
+
+(define inputattach-shepherd-service
+  (match-lambda
+    (($ <inputattach-configuration> type device log-file)
+     (list (shepherd-service
+            (provision '(inputattach))
+            (requirement '(udev))
+            (documentation "inputattach daemon")
+            (start #~(make-forkexec-constructor
+                      (list (string-append #$inputattach
+                                           "/bin/inputattach")
+                            (string-append "--" #$type)
+                            #$device)
+                      #:log-file #$log-file))
+            (stop #~(make-kill-destructor)))))))
+
+(define inputattach-service-type
+  (service-type
+   (name 'inputattach)
+   (extensions
+    (list (service-extension shepherd-root-service-type
+                             inputattach-shepherd-service)))
+   (default-value (inputattach-configuration))))
+
+(define* (inputattach-service #:key (type "wacom") (device "/dev/ttyS0") (log-file #f))
+  (service inputattach-service-type
+           (inputattach-configuration
+            (devicetype type)
+            (device device)
+            (log-file log-file))))
-- 
2.20.1