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chromeec: Add ACPI device for PD MCU and handle related EC host event

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Add ACPI device for PD MCU, if present. Call Notify routine when the
corresponding EC host event is received.

BUG=chrome-os-partner:31361
TEST=Manual on Samus. Enable EC_ENABLE_PD_MCU_DEVICE, unmask PD MCU host
event, and verify ACPI Notify routine is called when host event is sent
from EC.
BRANCH=None.

Change-Id: I6db61031e434d7ecb211802a4caeaba051e22a28
Signed-off-by: Shawn Nematbakhsh <shawnn@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/214809
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-by: Alec Berg <alecaberg@chromium.org>
This commit is contained in:
Shawn Nematbakhsh 2014-08-28 11:33:41 -07:00 • committed by chrome-internal-fetch
commit 226b349e40
3 changed files with 39 additions and 0 deletions
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13
src/ec/google/chromeec/acpi/ec.asl
View file

@ -303,6 +303,15 @@ Device (EC0)
}
}
#ifdef EC_ENABLE_PD_MCU_DEVICE
// PD event
Method (_Q16, 0, NotSerialized)
{
Store ("EC: GOT PD EVENT", Debug)
Notify (ECPD, 0x80)
}
#endif
/*
* Dynamic Platform Thermal Framework support
*/
@ -435,4 +444,8 @@ Device (EC0)
#ifdef EC_ENABLE_ALS_DEVICE
#include "als.asl"
#endif
#ifdef EC_ENABLE_PD_MCU_DEVICE
#include "pd.asl"
#endif
}

25
src/ec/google/chromeec/acpi/pd.asl Normal file
View file

@ -0,0 +1,25 @@
/*
* This file is part of the coreboot project.
*
* Copyright (C) 2014 Google Inc.
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
Device (ECPD)
{
Name (_HID, "GOOG0003")
Name (_UID, 1)
Name (_DDN, "EC PD Device")
}

1
src/ec/google/chromeec/ec_commands.h
View file

@ -253,6 +253,7 @@ enum host_event_code {
EC_HOST_EVENT_HANG_DETECT = 20,
/* Hang detect logic detected a hang and warm rebooted the AP */
EC_HOST_EVENT_HANG_REBOOT = 21,
EC_HOST_EVENT_PD_MCU = 22,
/*
* The high bit of the event mask is not used as a host event code. If