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UPSTREAM: ec/lenovo/h8: Add tablet mode switch method

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thinkpad_acpi expects a MHKG method which returns the current
state of the tablet mode switch shifted left by 3. If such
method is not found, subsequent laptop/tablet mode events are
ignored.

Tested on a X220T.

BUG=none
BRANCH=none
TEST=none

Change-Id: I0f07edd24cb8edef45ae62df7edc06fcc1aeb68c
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: 47f87bd93f
Original-Change-Id: Ic9ffea2ffe507b3692d1dd7411c52b813ec32146
Original-Signed-off-by: Nicola Corna <nicola@corna.info>
Original-Reviewed-on: https://review.coreboot.org/18328
Original-Tested-by: build bot (Jenkins)
Original-Reviewed-by: Alexander Couzens <lynxis@fe80.eu>
Reviewed-on: https://chromium-review.googlesource.com/449816
This commit is contained in:
Nicola Corna 2017-02-11 14:00:03 +01:00 • committed by chrome-bot
parent 66a199125c
commit 34a248384e
1 changed files with 8 additions and 0 deletions
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8
src/ec/lenovo/h8/acpi/ec.asl
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@ -32,6 +32,9 @@ Device(EC)
HSPA, 1, HSPA, 1,
Offset (0x0C), Offset (0x0C),
LEDS, 8, /* LED state */ LEDS, 8, /* LED state */
Offset (0x0F),
, 7,
TBSW, 1, /* Tablet mode switch */
Offset (0x1a), Offset (0x1a),
DKR2, 1, /* Dock register 2 */ DKR2, 1, /* Dock register 2 */
Offset (0x2a), Offset (0x2a),
@ -354,6 +357,11 @@ Device(EC)
{ {
Return (0x07FFFFFF) Return (0x07FFFFFF)
} }
/* Report tablet mode switch state */
Method (MHKG, 0, NotSerialized)
{
Return (TBSW << 3)
}
/* Version */ /* Version */
Method (MHKV, 0, NotSerialized) Method (MHKV, 0, NotSerialized)
{ {