diff options
Diffstat (limited to 'target/linux/goldfish/patches-2.6.30/0071-PM-earlysuspend-Add-console-switch-when-user-reque.patch')
| -rw-r--r-- | target/linux/goldfish/patches-2.6.30/0071-PM-earlysuspend-Add-console-switch-when-user-reque.patch | 133 |
1 files changed, 133 insertions, 0 deletions
diff --git a/target/linux/goldfish/patches-2.6.30/0071-PM-earlysuspend-Add-console-switch-when-user-reque.patch b/target/linux/goldfish/patches-2.6.30/0071-PM-earlysuspend-Add-console-switch-when-user-reque.patch new file mode 100644 index 0000000000..602b92425a --- /dev/null +++ b/target/linux/goldfish/patches-2.6.30/0071-PM-earlysuspend-Add-console-switch-when-user-reque.patch @@ -0,0 +1,133 @@ +From 0083b2afe89dea4a06bfd967b164318ad0bccd11 Mon Sep 17 00:00:00 2001 +From: =?utf-8?q?Arve=20Hj=C3=B8nnev=C3=A5g?= <arve@android.com> +Date: Wed, 15 Oct 2008 17:52:20 -0700 +Subject: [PATCH 071/134] PM: earlysuspend: Add console switch when user requested sleep state changes. +MIME-Version: 1.0 +Content-Type: text/plain; charset=utf-8 +Content-Transfer-Encoding: 8bit + +Signed-off-by: Arve Hjønnevåg <arve@android.com> +--- + kernel/power/Kconfig | 17 ++++++++ + kernel/power/Makefile | 1 + + kernel/power/consoleearlysuspend.c | 78 ++++++++++++++++++++++++++++++++++++ + 3 files changed, 96 insertions(+), 0 deletions(-) + create mode 100644 kernel/power/consoleearlysuspend.c + +--- a/kernel/power/Kconfig ++++ b/kernel/power/Kconfig +@@ -157,6 +157,23 @@ config EARLYSUSPEND + Call early suspend handlers when the user requested sleep state + changes. + ++choice ++ prompt "User-space screen access" ++ default CONSOLE_EARLYSUSPEND ++ depends on HAS_EARLYSUSPEND ++ ++ config NO_USER_SPACE_SCREEN_ACCESS_CONTROL ++ bool "None" ++ ++ config CONSOLE_EARLYSUSPEND ++ bool "Console switch on early-suspend" ++ depends on HAS_EARLYSUSPEND && VT ++ ---help--- ++ Register early suspend handler to perform a console switch to ++ when user-space should stop drawing to the screen and a switch ++ back when it should resume. ++endchoice ++ + config HIBERNATION + bool "Hibernation (aka 'suspend to disk')" + depends on PM && SWAP && ARCH_HIBERNATION_POSSIBLE +--- a/kernel/power/Makefile ++++ b/kernel/power/Makefile +@@ -9,6 +9,7 @@ obj-$(CONFIG_FREEZER) += process.o + obj-$(CONFIG_WAKELOCK) += wakelock.o + obj-$(CONFIG_USER_WAKELOCK) += userwakelock.o + obj-$(CONFIG_EARLYSUSPEND) += earlysuspend.o ++obj-$(CONFIG_CONSOLE_EARLYSUSPEND) += consoleearlysuspend.o + obj-$(CONFIG_HIBERNATION) += swsusp.o disk.o snapshot.o swap.o user.o + + obj-$(CONFIG_MAGIC_SYSRQ) += poweroff.o +--- /dev/null ++++ b/kernel/power/consoleearlysuspend.c +@@ -0,0 +1,78 @@ ++/* kernel/power/consoleearlysuspend.c ++ * ++ * Copyright (C) 2005-2008 Google, Inc. ++ * ++ * This software is licensed under the terms of the GNU General Public ++ * License version 2, as published by the Free Software Foundation, and ++ * may be copied, distributed, and modified under those terms. ++ * ++ * This program 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. ++ * ++ */ ++ ++#include <linux/console.h> ++#include <linux/earlysuspend.h> ++#include <linux/kbd_kern.h> ++#include <linux/module.h> ++#include <linux/vt_kern.h> ++#include <linux/wait.h> ++ ++#define EARLY_SUSPEND_CONSOLE (MAX_NR_CONSOLES-1) ++ ++static int orig_fgconsole; ++static void console_early_suspend(struct early_suspend *h) ++{ ++ acquire_console_sem(); ++ orig_fgconsole = fg_console; ++ if (vc_allocate(EARLY_SUSPEND_CONSOLE)) ++ goto err; ++ if (set_console(EARLY_SUSPEND_CONSOLE)) ++ goto err; ++ release_console_sem(); ++ ++ if (vt_waitactive(EARLY_SUSPEND_CONSOLE)) ++ pr_warning("console_early_suspend: Can't switch VCs.\n"); ++ return; ++err: ++ pr_warning("console_early_suspend: Can't set console\n"); ++ release_console_sem(); ++} ++ ++static void console_late_resume(struct early_suspend *h) ++{ ++ int ret; ++ acquire_console_sem(); ++ ret = set_console(orig_fgconsole); ++ release_console_sem(); ++ if (ret) { ++ pr_warning("console_late_resume: Can't set console.\n"); ++ return; ++ } ++ ++ if (vt_waitactive(orig_fgconsole)) ++ pr_warning("console_late_resume: Can't switch VCs.\n"); ++} ++ ++static struct early_suspend console_early_suspend_desc = { ++ .level = EARLY_SUSPEND_LEVEL_STOP_DRAWING, ++ .suspend = console_early_suspend, ++ .resume = console_late_resume, ++}; ++ ++static int __init console_early_suspend_init(void) ++{ ++ register_early_suspend(&console_early_suspend_desc); ++ return 0; ++} ++ ++static void __exit console_early_suspend_exit(void) ++{ ++ unregister_early_suspend(&console_early_suspend_desc); ++} ++ ++module_init(console_early_suspend_init); ++module_exit(console_early_suspend_exit); ++ |