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authorZhang Rui <rui.zhang@intel.com>2008-10-27 17:01:02 -0400
committerLen Brown <len.brown@intel.com>2008-10-28 01:53:19 -0400
commited206fac87d65917280b6c3edd3f01125d4095c9 (patch)
tree5197b6d5fbab8f78e4451320b5a1f4f06f62f404 /Documentation
parent49fdf6785fd660e18a1eb4588928f47e9fa29a9a (diff)
ACPI: bugfix reporting of event handler status
Introduce a new flag showing whether the event has an event handler/method. For all the GPEs and Fixed Events, 1. ACPI_EVENT_FLAG_HANDLE is cleared, it's an "invalid" ACPI event. 2. Both ACPI_EVENT_FLAG_HANDLE and ACPI_EVENT_FLAG_DISABLE are set, it's "disabled". 3. Both ACPI_EVENT_FLAG_HANDLE and ACPI_EVENT_FLAG_ENABLE are set, it's "enabled". 4. Both ACPI_EVENT_FLAG_HANDLE and ACPI_EVENT_FLAG_WAKE_ENABLE are set, it's "wake_enabled". Among other things, this prevents incorrect reporting of ACPI events as being "invalid" when it's really just (temporarily) "disabled". Signed-off-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/ABI/testing/sysfs-firmware-acpi16
1 files changed, 8 insertions, 8 deletions
diff --git a/Documentation/ABI/testing/sysfs-firmware-acpi b/Documentation/ABI/testing/sysfs-firmware-acpi
index f27be7d1a49f..e8ffc70ffe12 100644
--- a/Documentation/ABI/testing/sysfs-firmware-acpi
+++ b/Documentation/ABI/testing/sysfs-firmware-acpi
@@ -89,7 +89,7 @@ Description:
89 89
90 error - an interrupt that can't be accounted for above. 90 error - an interrupt that can't be accounted for above.
91 91
92 invalid: it's either a wakeup GPE or a GPE/Fixed Event that 92 invalid: it's either a GPE or a Fixed Event that
93 doesn't have an event handler. 93 doesn't have an event handler.
94 94
95 disable: the GPE/Fixed Event is valid but disabled. 95 disable: the GPE/Fixed Event is valid but disabled.
@@ -117,30 +117,30 @@ Description:
117 and other user space applications so that the machine won't shutdown 117 and other user space applications so that the machine won't shutdown
118 when pressing the power button. 118 when pressing the power button.
119 # cat ff_pwr_btn 119 # cat ff_pwr_btn
120 0 120 0 enabled
121 # press the power button for 3 times; 121 # press the power button for 3 times;
122 # cat ff_pwr_btn 122 # cat ff_pwr_btn
123 3 123 3 enabled
124 # echo disable > ff_pwr_btn 124 # echo disable > ff_pwr_btn
125 # cat ff_pwr_btn 125 # cat ff_pwr_btn
126 disable 126 3 disabled
127 # press the power button for 3 times; 127 # press the power button for 3 times;
128 # cat ff_pwr_btn 128 # cat ff_pwr_btn
129 disable 129 3 disabled
130 # echo enable > ff_pwr_btn 130 # echo enable > ff_pwr_btn
131 # cat ff_pwr_btn 131 # cat ff_pwr_btn
132 4 132 4 enabled
133 /* 133 /*
134 * this is because the status bit is set even if the enable bit is cleared, 134 * this is because the status bit is set even if the enable bit is cleared,
135 * and it triggers an ACPI fixed event when the enable bit is set again 135 * and it triggers an ACPI fixed event when the enable bit is set again
136 */ 136 */
137 # press the power button for 3 times; 137 # press the power button for 3 times;
138 # cat ff_pwr_btn 138 # cat ff_pwr_btn
139 7 139 7 enabled
140 # echo disable > ff_pwr_btn 140 # echo disable > ff_pwr_btn
141 # press the power button for 3 times; 141 # press the power button for 3 times;
142 # echo clear > ff_pwr_btn /* clear the status bit */ 142 # echo clear > ff_pwr_btn /* clear the status bit */
143 # echo disable > ff_pwr_btn 143 # echo disable > ff_pwr_btn
144 # cat ff_pwr_btn 144 # cat ff_pwr_btn
145 7 145 7 enabled
146 146