ec: add support for KBC1126 in HP laptops

- let the coreboot build system insert the two blobs to the coreboot image
- EC and Super I/O initialization
- ACPI support

Tested on 2760p, 8460p, 2570p, 8470p.

Issue:

Kernel gives the following error:

  ACPI Error: No handler for Region [ECRM] (...) [EmbeddedControl]
  ACPI Error: Region EmbeddedControl (ID=3) has no handler

TODO:

- consider moving the Super I/O initialization code to ramstage, or
  reuse the existing sio/smsc/kbc1100 code (if so, how to add the
  additional kbc1126 specific functions to sio/kbc1100)
- sort out the ACPI code which is mostly from the ACPI dump of vendor
  firmware
- find out why the digitizer in hp/2760p doesn't work
- GRUB payload freezing on all HP Elitebooks may be related to EC

Change-Id: I6b16eb7e26303eda740f52d667dedb7cc04b4ef0
Signed-off-by: Iru Cai <mytbk920423@gmail.com>
Reviewed-on: https://review.coreboot.org/19072
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

1 files changed, 30 insertions, 0 deletions

diff --git a/src/ec/hp/kbc1126/acpi/lid.asl b/src/ec/hp/kbc1126/acpi/lid.asl
new file mode 100644
index 0000000000..c123c4c1f1
--- /dev/null
+++ b/src/ec/hp/kbc1126/acpi/lid.asl
@@ -0,0 +1,30 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2017 Iru Cai <mytbk920423@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * 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.
+ */
+
+Device (LID)
+{
+	Name (_HID, EisaId ("PNP0C0D"))
+	Method (_LID, 0, NotSerialized)
+	{
+		Local0 = CLID
+		Return (Local0)
+	}
+}
+
+Method (_Q0A, 0, NotSerialized)
+{
+	Store ("EC: LID STATUS", Debug)
+	Notify (LID, 0x80)
+}