linux-kernel - [RFC PATCH 2/2] logind: Allow lid status remains "closed"

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Date:	Tue, 17 May 2016 16:27:40 +0800
From:	Lv Zheng <lv.zheng@...el.com>
To:	"Rafael J. Wysocki" <rafael.j.wysocki@...el.com>,
	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	Len Brown <len.brown@...el.com>
Cc:	Lv Zheng <lv.zheng@...el.com>, Lv Zheng <zetalog@...il.com>,
	<linux-kernel@...r.kernel.org>, linux-acpi@...r.kernel.org,
	"Bastien Nocera:" <hadess@...ess.net>
Subject: [RFC PATCH 2/2] logind: Allow lid status remains "closed"

This patch adds an option to allow the lid status to remain closed.
However we are not systemd developers, and this patch may be wrong.
It's just a demo on how the issue can be addressed in systemd.

Signed-off-by: Lv Zheng <lv.zheng@...el.com>
Cc: Bastien Nocera: <hadess@...ess.net>
---
Index: systemd/src/login/logind-gperf.gperf
===================================================================
--- systemd.orig/src/login/logind-gperf.gperf
+++ systemd/src/login/logind-gperf.gperf
@@ -29,6 +29,7 @@ Login.PowerKeyIgnoreInhibited,     confi
 Login.SuspendKeyIgnoreInhibited,   config_parse_bool,          0, offsetof(Manager, suspend_key_ignore_inhibited)
 Login.HibernateKeyIgnoreInhibited, config_parse_bool,          0, offsetof(Manager, hibernate_key_ignore_inhibited)
 Login.LidSwitchIgnoreInhibited,    config_parse_bool,          0, offsetof(Manager, lid_switch_ignore_inhibited)
+Login.LidSwitchLevelTriggered,     config_parse_bool,          0, offsetof(Manager, lid_switch_level_triggered)
 Login.HoldoffTimeoutSec,           config_parse_sec,           0, offsetof(Manager, holdoff_timeout_usec)
 Login.IdleAction,                  config_parse_handle_action, 0, offsetof(Manager, idle_action)
 Login.IdleActionSec,               config_parse_sec,           0, offsetof(Manager, idle_action_usec)
Index: systemd/src/login/logind.c
===================================================================
--- systemd.orig/src/login/logind.c
+++ systemd/src/login/logind.c
@@ -62,6 +62,7 @@ static Manager *manager_new(void) {
         m->handle_lid_switch = HANDLE_SUSPEND;
         m->handle_lid_switch_docked = HANDLE_IGNORE;
         m->lid_switch_ignore_inhibited = true;
+        m->lid_switch_level_triggered = true;
         m->holdoff_timeout_usec = 30 * USEC_PER_SEC;
 
         m->idle_action_usec = 30 * USEC_PER_MINUTE;
Index: systemd/src/login/logind.h
===================================================================
--- systemd.orig/src/login/logind.h
+++ systemd/src/login/logind.h
@@ -123,6 +123,7 @@ struct Manager {
         bool suspend_key_ignore_inhibited;
         bool hibernate_key_ignore_inhibited;
         bool lid_switch_ignore_inhibited;
+        bool lid_switch_level_triggered;
 
         bool remove_ipc;
 
Index: systemd/src/login/logind-button.c
===================================================================
--- systemd.orig/src/login/logind-button.c
+++ systemd/src/login/logind-button.c
@@ -123,6 +123,9 @@ static int button_install_check_event_so
         int r;
         assert(b);
 
+        if (!b->manager->lid_switch_level_triggered)
+                return 0;
+
         /* Install a post handler, so that we keep rechecking as long as the lid is closed. */
 
         if (b->check_event_source)