ec/roda/it8518: Add another embedded controller

The embedded-controller interface of Roda's Ivy Bridge notebooks is
supposedly programmed by AMI.

Change-Id: I153d831fcea8a3132c7bd1927ff3b445d9a8e92c
Signed-off-by: Dennis Wassenberg <dennis.wassenberg@secunet.com>
Signed-off-by: Nico Huber <nico.huber@secunet.com>
Reviewed-on: https://review.coreboot.org/17288
Tested-by: build bot (Jenkins)
Reviewed-by: Edward O'Callaghan <edward.ocallaghan@koparo.com>

8 files changed, 511 insertions, 0 deletions

diff --git a/src/ec/roda/it8518/Kconfig b/src/ec/roda/it8518/Kconfig
new file mode 100644
index 0000000000..452c34541e
--- /dev/null
+++ b/src/ec/roda/it8518/Kconfig
@@ -0,0 +1,20 @@
+##
+## This file is part of the coreboot project.
+##
+## Copyright (C) 2015 secunet Security Networks AG
+##
+## 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.
+##
+
+config EC_RODA_IT8518
+	bool
+	select EC_ACPI
+	help
+	  Interface to IT8518 embedded controller in Roda notebooks.
diff --git a/src/ec/roda/it8518/Makefile.inc b/src/ec/roda/it8518/Makefile.inc
new file mode 100644
index 0000000000..a0998880d9
--- /dev/null
+++ b/src/ec/roda/it8518/Makefile.inc
@@ -0,0 +1,16 @@
+##
+## This file is part of the coreboot project.
+##
+## Copyright (C) 2015 secunet Security Networks AG
+##
+## 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.
+##
+
+ramstage-$(CONFIG_EC_RODA_IT8518) += ec.c
diff --git a/src/ec/roda/it8518/acpi/ac.asl b/src/ec/roda/it8518/acpi/ac.asl
new file mode 100644
index 0000000000..33c62ee8dd
--- /dev/null
+++ b/src/ec/roda/it8518/acpi/ac.asl
@@ -0,0 +1,29 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2015 secunet Security Networks AG
+ *
+ * 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.
+ */
+
+//SCOPE EC0
+
+Device (AC)
+{
+	Name (_HID, "ACPI0003")
+	Name (_PCL, Package () { \_SB })
+
+	Method (_PSR, 0, NotSerialized)  // _PSR: Power Source
+	{
+		Store ("-----> AC: _PSR", Debug)
+		Store ("<----- AC: _PSR", Debug)
+		Return (PWRS)
+	}
+}
diff --git a/src/ec/roda/it8518/acpi/battery.asl b/src/ec/roda/it8518/acpi/battery.asl
new file mode 100644
index 0000000000..ffe2c2f6e9
--- /dev/null
+++ b/src/ec/roda/it8518/acpi/battery.asl
@@ -0,0 +1,123 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2015 secunet Security Networks AG
+ *
+ * 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.
+ */
+
+//SCOPE EC0
+
+Device (BAT0)
+{
+	Name (_HID, EISAID ("PNP0C0A"))
+	Name (_UID, 1)
+	Name (_PCL, Package () { \_SB })
+
+
+	//
+	// Default Static Battery Information
+	//
+	Name (PBIF, Package (13)
+	{
+		1,		//  0: Power Unit
+		4800,		//  1: Design Capacity
+		4650,		//  2: Last Full Charge Capacity
+		1,		//  3: Battery Technology(Rechargeable)
+		12608,		//  4: Design Voltage 10.8V
+		0,		//  5: Design capacity of warning
+		0,		//  6: Design capacity of low
+		0,		//  7: Battery capacity granularity 1
+		0,		//  8: Battery capacity granularity 2
+		"BAT0",		//  9: Model Number
+		"RT672",	// 10: Serial Number
+		"LiON",		// 11: Battery Type
+		"ASP"		// 12: OEM Information
+	})
+
+
+	Name (PBST, Package (4)
+	{
+		0x00000000,	// Battery State
+		0xFFFFFFFF,	// Battery Present Rate
+		0xFFFFFFFF,	// Battery Remaining Capacity
+		0xFFFFFFFF,	// Battery Present Voltage
+	})
+
+
+	// Battery Slot Status
+	Method (_STA, 0, Serialized)
+	{
+		Store ("-----> BAT0: _STA", Debug)
+
+		Store (0x0F, Local0)
+
+		Store (ECPS, Local1)
+		And (Local1, 0x02, Local1)
+		If (LEqual (Local1, 0x02))
+		{
+			Store (0x1F, Local0)
+		}
+
+		Store ("<----- BAT0: _STA", Debug)
+
+		Return (Local0)
+	}
+
+	Method (_BIF, 0, Serialized)
+	{
+		Store ("-----> BAT0: _BIF", Debug)
+
+		Store (B0FC, Index (PBIF, 0x02))
+		Store (Divide (Multiply (B0FC, 6), 100), Index (PBIF, 0x05))
+		Store (Divide (Multiply (B0FC, 3), 100), Index (PBIF, 0x06))
+
+		Store ("<----- BAT0: _BIF", Debug)
+
+		Return (PBIF)
+	}
+
+	Method (_BST, 0, Serialized)
+	{
+		Store ("-----> BAT0: _BST", Debug)
+
+		Store (B0ST, Local0)
+		And (Local0, 0x40, Local0)
+		If (LEqual (Local0, 0x40))
+		{
+			If (LEqual (PWRS, 1))
+			{
+				Store (0x00, Index (PBST, 0x00))
+			}
+			Else
+			{
+				Store (0x01, Index (PBST, 0x00))
+			}
+		}
+		Else
+		{
+			Store (0x02, Index (PBST, 0x00))
+		}
+
+		Store (B0AC, Local1)
+		If (LGreaterEqual (Local1, 0x8000))
+		{
+			Subtract (0x00010000, Local1, Local1)
+		}
+
+		Store (Local1, Index (PBST, 0x01))
+		Store (B0RC, Index (PBST, 0x02))
+		Store (B0VT, Index (PBST, 0x03))
+
+		Store ("<----- BAT0: _BST", Debug)
+
+		Return (PBST)
+	}
+}
diff --git a/src/ec/roda/it8518/acpi/ec.asl b/src/ec/roda/it8518/acpi/ec.asl
new file mode 100644
index 0000000000..e0639e2590
--- /dev/null
+++ b/src/ec/roda/it8518/acpi/ec.asl
@@ -0,0 +1,210 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2015 secunet Security Networks AG
+ *
+ * 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.
+ */
+
+#include <drivers/pc80/pc/ps2_controller.asl>
+
+Device (EC0)
+{
+	Name (_HID, EISAID ("PNP0C09"))		// ACPI Embedded Controller
+	Name (_UID, 1)
+	Name (_GPE, Add(EC_SCI_GPI, 16))	// GPE for Runtime SCI
+	Name (PWRS, 1)
+	Name (LIDS, 1)
+
+	// EC RAM fields
+	OperationRegion(ERAM, EmbeddedControl, 0, 0xFF)
+	Field (ERAM, ByteAcc, NoLock, Preserve)
+	{
+		Offset(0x00),		// [Configuration Space 0x0]
+		Offset(0x02),		// [Configuration Space 0x2]
+		B0ST, 16,		// Battery 0 State
+		B0FC, 16,		// Battery 0 Last Full Charge Capacity
+		B0RC, 16,		// Battery 0 Remaining Capacity
+		B0U1, 16,		// Unknown
+		B0VT, 16,		// Battery 0 Present Voltage
+		B0AC, 16,		// Battery 0 Present Rate
+		Offset(0x40),		// [Configuration Space 0x40]
+		ECOS, 8,		// OS System Type (0: DOS, 1: ACPI-compatible)
+		CPUT, 8,		// CPU Temperature
+		LOCT, 8,		// LOC Temperature
+		OEMT, 8,		// OEM Temperature
+		Offset (0x48),		// [Configuration Space 0x48]
+		ECPS, 8,		// EC Power Source
+		Offset (0x50),		// [Configuration Space 0x50]
+		LUXH, 8,		// Ambient Light Illuminance High
+		LUXL, 8,		// Ambient Light Illuminance Low
+		Offset (0x5B),		// [Configuration Space 0x5B]
+		BRIG, 8,		// Brightness
+	} // End of ERAM
+
+	Method (_STA, 0, NotSerialized)  // _STA: Status
+	{
+		Return (0x0F)
+	}
+
+	Method (_CRS, 0, NotSerialized)
+	{
+		Return (ResourceTemplate()
+		{
+			IO (Decode16, 0x62, 0x62, 0x00, 0x01)
+			IO (Decode16, 0x66, 0x66, 0x00, 0x01)
+		})
+	}
+
+	Method (_REG, 2, NotSerialized)
+	{
+		Store ("-----> EC: _REG", Debug)
+
+		Store (0x01, ECOS)
+
+		Store ("<----- EC: _REG", Debug)
+	}
+
+	Method (_Q29, 0, NotSerialized)		// _Qxx: EC Query
+	{
+		Store ("-----> EC: _Q29", Debug)
+
+		Store (1, PWRS)
+		Notify (AC, 0x80)
+		Notify (AC, 0x00)
+		Notify (BAT0, 0x00)
+		Notify (BAT0, 0x80)
+
+		Store ("<----- EC: _Q29", Debug)
+	}
+
+	Method (_Q31, 0, NotSerialized)		// _Qxx: EC Query
+	{
+		Store ("-----> EC: _Q31", Debug)
+
+		Store (0, PWRS)
+		Notify (AC, 0x80)
+		Notify (AC, 0x00)
+		Notify (BAT0, 0x00)
+		Notify (BAT0, 0x80)
+
+		Store ("<----- EC: _Q31", Debug)
+	}
+
+	Method (_Q32, 0, NotSerialized)		// _Qxx: EC Query
+	{
+		Store ("-----> EC: _Q32", Debug)
+
+		Sleep (2500)
+		Notify (BAT0, 0x00)
+		Notify (BAT0, 0x80)
+		Notify (BAT0, 0x81)
+		Notify (BAT0, 0x82)
+
+		Store ("<----- EC: _Q32", Debug)
+	}
+
+	Method (_Q33, 0, NotSerialized)		// _Qxx: EC Query
+	{
+		Store ("-----> EC: _Q33", Debug)
+
+		Sleep (2500)
+		Notify (BAT0, 0x00)
+		Notify (BAT0, 0x80)
+		Notify (BAT0, 0x81)
+		Notify (BAT0, 0x82)
+
+		Store ("<---- EC: _Q33", Debug)
+	}
+
+	Method (_Q36, 0, NotSerialized)		// _Qxx: EC Query
+	{
+		Store ("-----> EC: _Q36", Debug)
+
+		Notify (BAT0, 0x80)
+
+		Store ("<----- EC: _Q36", Debug)
+	}
+
+	Method (_Q37, 0, NotSerialized)		// _Qxx: EC Query
+	{
+		Store ("-----> EC: _Q37", Debug)
+
+		Notify (BAT0, 0x80)
+
+		Store ("<----- EC: _Q37", Debug)
+	}
+
+	Method (_Q43, 0, NotSerialized)		// _Qxx: EC Query
+	{
+		Store ("-----> EC: _Q43", Debug)
+
+                Store (BRIG, Local0)
+                Increment (Local0)
+                If (LGreater (Local0, 0xAA)) {
+			Store (0xAA, Local0)
+                }
+                Store (Local0, BRIG)
+
+		\_SB.PCI0.GFX0.INCB ()
+
+		Store ("<---- EC: _Q43", Debug)
+	}
+
+	Method (_Q44, 0, NotSerialized)		// _Qxx: EC Query
+	{
+		Store ("-----> EC: _Q44", Debug)
+
+                Store (BRIG, Local0)
+                Decrement (Local0)
+                If (LLess (Local0, 0xA0))
+                {
+			Store (0xA0, Local0)
+                }
+                Store (Local0, BRIG)
+
+		\_SB.PCI0.GFX0.DECB ()
+
+		Store ("<---- EC: _Q44", Debug)
+	}
+
+	Method (_Q45, 0, NotSerialized)		// _Qxx: EC Query
+	{
+		Store ("-----> EC: _Q45", Debug)
+
+		Store (0, LIDS)
+		Notify (LID, 0x80)
+
+		Store ("<----- EC: _Q45", Debug)
+	}
+
+	Method (_Q46, 0, NotSerialized)		// _Qxx: EC Query
+	{
+		Store ("-----> EC: _Q46", Debug)
+
+		Store (1, LIDS)
+		Notify (LID, 0x80)
+
+		Store ("<----- EC: _Q46", Debug)
+	}
+
+	Method (_Q70, 0, NotSerialized)		// _Qxx: EC Query
+	{
+		Store ("-----> EC: _Q70", Debug)
+
+		Notify (ALSD, 0x80)
+
+		Store ("<----- EC: _Q70", Debug)
+	}
+
+	#include "battery.asl"
+	#include "ac.asl"
+	#include "lid.asl"
+}
diff --git a/src/ec/roda/it8518/acpi/lid.asl b/src/ec/roda/it8518/acpi/lid.asl
new file mode 100644
index 0000000000..f793838863
--- /dev/null
+++ b/src/ec/roda/it8518/acpi/lid.asl
@@ -0,0 +1,27 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2015 secunet Security Networks AG
+ *
+ * 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.
+ */
+
+//SCOPE EC0
+
+Device (LID)
+{
+	Name (_HID, EisaId ("PNP0C0D"))  // _HID: Hardware ID
+	Method (_LID, 0, NotSerialized)  // _LID: Lid Status
+	{
+		Store ("-----> LID0: _LID", Debug)
+		Store ("<----- LID0: _LID", Debug)
+		Return (LIDS)
+	}
+}
diff --git a/src/ec/roda/it8518/chip.h b/src/ec/roda/it8518/chip.h
new file mode 100644
index 0000000000..44891e84fa
--- /dev/null
+++ b/src/ec/roda/it8518/chip.h
@@ -0,0 +1,28 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2015-2016 secunet Security Networks AG
+ *
+ * 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.
+ */
+
+#ifndef _EC_RODA_IT8518_CHIP_H
+#define _EC_RODA_IT8518_CHIP_H
+
+#include <device/device.h>
+
+struct chip_operations;
+extern struct chip_operations ec_roda_it8518_ops;
+
+struct ec_roda_it8518_config {
+	u8 cpuhot_limit;	/* temperature in °C which asserts PROCHOT# */
+};
+
+#endif /* _EC_RODA_IT8518_CHIP_H */
diff --git a/src/ec/roda/it8518/ec.c b/src/ec/roda/it8518/ec.c
new file mode 100644
index 0000000000..707d9e9371
--- /dev/null
+++ b/src/ec/roda/it8518/ec.c
@@ -0,0 +1,58 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2015 secunet Security Networks AG
+ *
+ * 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.
+ */
+
+#include <console/console.h>
+#include <device/device.h>
+#include <device/pnp.h>
+#include <pc80/keyboard.h>
+#include <ec/acpi/ec.h>
+#include <stdlib.h>
+
+#include "chip.h"
+
+static void it8518_init(struct device *dev)
+{
+	const struct ec_roda_it8518_config *const conf = dev->chip_info;
+
+	if (!dev->enabled)
+		return;
+
+	if (conf && conf->cpuhot_limit)
+		ec_write(0xb2, conf->cpuhot_limit);
+
+	printk(BIOS_DEBUG, "Roda IT8518: Initializing keyboard.\n");
+	pc_keyboard_init(NO_AUX_DEVICE);
+}
+
+static struct device_operations ops = {
+	.init             = it8518_init,
+	.read_resources   = DEVICE_NOOP,
+	.enable_resources = DEVICE_NOOP,
+};
+
+static struct pnp_info pnp_dev_info[] = {
+	{ &ops, 0, 0, { 0, 0 }, }
+};
+
+static void enable_dev(struct device *dev)
+{
+	pnp_enable_devices(dev, &pnp_ops, ARRAY_SIZE(pnp_dev_info),
+			   pnp_dev_info);
+}
+
+struct chip_operations ec_roda_it8518_ops = {
+	CHIP_NAME("Roda IT8518 EC")
+	.enable_dev = enable_dev
+};