[coreboot-gerrit] Patch set updated for coreboot: ec/lenovo/h8: Add tablet mode switch method

[Nicola Corna (nicola@corna.info)]

Nicola Corna (nicola at corna.info) just uploaded a new patch set to gerrit, which you can find at https://review.coreboot.org/18328

-gerrit

commit cff9de517d8f11d68027e0d0285c7da2ec7d07d7
Author: Nicola Corna <nicola at corna.info>
Date:   Sat Feb 11 14:00:03 2017 +0100

    ec/lenovo/h8: Add tablet mode switch method
    
    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.
    
    Change-Id: Ic9ffea2ffe507b3692d1dd7411c52b813ec32146
    Signed-off-by: Nicola Corna <nicola at corna.info>
---
 src/ec/lenovo/h8/acpi/ec.asl | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/ec/lenovo/h8/acpi/ec.asl b/src/ec/lenovo/h8/acpi/ec.asl
index b69acf8..497dde4 100644
--- a/src/ec/lenovo/h8/acpi/ec.asl
+++ b/src/ec/lenovo/h8/acpi/ec.asl
@@ -32,6 +32,9 @@ Device(EC)
 				HSPA, 1,
 		Offset (0x0C),
 				LEDS, 8,	/* LED state */
+		Offset (0x0F),
+				    , 7,
+				TBSW, 1,	/* Tablet mode switch */
 		Offset (0x1a),
 				DKR2, 1,	/* Dock register 2 */
 		Offset (0x2a),
@@ -354,6 +357,11 @@ Device(EC)
 		{
 			Return (0x07FFFFFF)
 		}
+		/* Report tablet mode switch state */
+		Method (MHKG, 0, NotSerialized)
+		{
+			Return (TBSW << 3)
+		}
 		/* Version */
 		Method (MHKV, 0, NotSerialized)
 		{