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Wake keyboard task when lid opens

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If keyboard scanning is active when the lid closes, it will disable
scanning put the scan task to sleep.  We need a corresponding task
wake when the lid opens, or scanning will be stuck off (until
something else happens, like poking the power button).

BUG=chrome-os-partner:22190
BRANCH=peppy
TEST=Hold down a key.  Use a magnet to trigger the lid switch.  Scanning
     should stop while the lid is "closed", and restart when the magnet is
     moved to "open" the lid again.

Change-Id: I0a900f17f65b75cbdb45950cea7f50190d2bf9b1
Signed-off-by: Randall Spangler <rspangler@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/170993
Reviewed-by: Bill Richardson <wfrichar@chromium.org>
This commit is contained in:
Randall Spangler
2013-09-27 16:29:10 -07:00
committed by chrome-internal-fetch
parent 5ee634b1a5
commit 6d522eef9d
1 changed files with 13 additions and 0 deletions
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13
common/keyboard_scan.c
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@@ -8,6 +8,7 @@
#include "chipset.h"
#include "common.h"
#include "console.h"
#include "hooks.h"
#include "host_command.h"
#include "keyboard_config.h"
#include "keyboard_protocol.h"
@@ -555,6 +556,18 @@ void keyboard_scan_enable(int enable)
}
}
#ifdef CONFIG_LID_SWITCH
static void keyboard_lid_change(void)
{
/* If lid is open, wake the keyboard task */
if (lid_is_open())
task_wake(TASK_ID_KEYSCAN);
}
DECLARE_HOOK(HOOK_LID_CHANGE, keyboard_lid_change, HOOK_PRIO_DEFAULT);
#endif
/*****************************************************************************/
/* Host commands */