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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2011 Christoph Grenz <christophg+cb@grenz-bonn.de>
* Copyright (C) 2013, 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.
*/
/*
* Include this file into a mainboard's DSDT _SB device tree and it will
* expose the IT8786E SuperIO and some of its functionality.
*
* It allows the change of IO ports, IRQs and DMA settings on logical
* devices, disabling and reenabling logical devices.
*
* LDN State
* 0x1 UARTA Implemented, untested
* 0x2 UARTB Implemented, untested
* 0x3 PP Not implemented
* 0x4 EC Not implemented
* 0x5 KBC Implemented, untested
* 0x6 MOUSE Implemented, untested
* 0x7 GPIO Not implemented
* 0x8 UARTC Implemented, untested
* 0x9 UARTD Implemented, untested
* 0xa UARTE Not implemented
* 0xb UARTF Not implemented
* 0xc CIR Not implemented
*
* Controllable through preprocessor defines:
* SUPERIO_DEV Device identifier for this SIO (e.g. SIO0)
* SUPERIO_PNP_BASE I/O address of the first PnP configuration register
* IT8786E_SHOW_UARTA If defined, UARTA will be exposed.
* IT8786E_SHOW_UARTB If defined, UARTB will be exposed.
* IT8786E_SHOW_UARTC If defined, UARTC will be exposed.
* IT8786E_SHOW_UARTD If defined, UARTD will be exposed.
* IT8786E_SHOW_KBC If defined, the KBC will be exposed.
* IT8786E_SHOW_PS2M If defined, PS/2 mouse support will be exposed.
*/
#undef SUPERIO_CHIP_NAME
#define SUPERIO_CHIP_NAME IT8786E
#include <superio/acpi/pnp.asl>
#undef PNP_DEFAULT_PSC
#define PNP_DEFAULT_PSC Return (0) /* no power management */
#define CONFIGURE_CONTROL CCTL
Device (SUPERIO_DEV) {
Name (_HID, EisaId("PNP0A05"))
Name (_STR, Unicode("ITE IT8786E Super I/O"))
Name (_UID, SUPERIO_UID(SUPERIO_DEV,))
/* Mutex for accesses to the configuration ports */
Mutex (CRMX, 1)
/* SuperIO configuration ports */
OperationRegion (CREG, SystemIO, SUPERIO_PNP_BASE, 0x02)
Field (CREG, ByteAcc, NoLock, Preserve)
{
PNP_ADDR_REG, 8,
PNP_DATA_REG, 8
}
IndexField (PNP_ADDR_REG, PNP_DATA_REG, ByteAcc, NoLock, Preserve)
{
Offset (0x02),
CONFIGURE_CONTROL, 8, /* Global configure control */
Offset (0x07),
PNP_LOGICAL_DEVICE, 8, /* Logical device selector */
Offset (0x30),
PNP_DEVICE_ACTIVE, 1, /* Logical device activation */
Offset (0x60),
PNP_IO0_HIGH_BYTE, 8, /* First I/O port base - high byte */
PNP_IO0_LOW_BYTE, 8, /* First I/O port base - low byte */
Offset (0x62),
PNP_IO1_HIGH_BYTE, 8, /* Second I/O port base - high byte */
PNP_IO1_LOW_BYTE, 8, /* Second I/O port base - low byte */
Offset (0x70),
PNP_IRQ0, 8, /* First IRQ */
}
Method (_CRS)
{
/* Announce the used i/o ports to the OS */
Return (ResourceTemplate () {
IO (Decode16, SUPERIO_PNP_BASE, SUPERIO_PNP_BASE,
0x01, 0x02)
})
}
#undef PNP_ENTER_MAGIC_1ST
#undef PNP_ENTER_MAGIC_2ND
#undef PNP_ENTER_MAGIC_3RD
#undef PNP_ENTER_MAGIC_4TH
#undef PNP_EXIT_MAGIC_1ST
#define PNP_ENTER_MAGIC_1ST 0x87
#define PNP_ENTER_MAGIC_2ND 0x01
#define PNP_ENTER_MAGIC_3RD 0x55
#if SUPERIO_PNP_BASE == 0x2e
#define PNP_ENTER_MAGIC_4TH 0x55
#else
#define PNP_ENTER_MAGIC_4TH 0xaa
#endif
#define PNP_EXIT_SPECIAL_REG CONFIGURE_CONTROL
#define PNP_EXIT_SPECIAL_VAL 0x02
#include <superio/acpi/pnp_config.asl>
#ifdef IT8786E_SHOW_UARTA
#undef SUPERIO_UART_LDN
#undef SUPERIO_UART_DDN
#undef SUPERIO_UART_PM_REG
#undef SUPERIO_UART_PM_VAL
#undef SUPERIO_UART_PM_LDN
#define SUPERIO_UART_LDN 1
#include <superio/acpi/pnp_uart.asl>
#endif
#ifdef IT8786E_SHOW_UARTB
#undef SUPERIO_UART_LDN
#undef SUPERIO_UART_DDN
#undef SUPERIO_UART_PM_REG
#undef SUPERIO_UART_PM_VAL
#undef SUPERIO_UART_PM_LDN
#define SUPERIO_UART_LDN 2
#include <superio/acpi/pnp_uart.asl>
#endif
#ifdef IT8786E_SHOW_KBC
#undef SUPERIO_KBC_LDN
#undef SUPERIO_KBC_PS2M
#undef SUPERIO_KBC_PS2LDN
#define SUPERIO_KBC_LDN 5
#ifdef IT8786E_SHOW_PS2M
#define SUPERIO_KBC_PS2LDN 6
#endif
#include <superio/acpi/pnp_kbc.asl>
#endif
#ifdef IT8786E_SHOW_UARTC
#undef SUPERIO_UART_LDN
#undef SUPERIO_UART_DDN
#undef SUPERIO_UART_PM_REG
#undef SUPERIO_UART_PM_VAL
#undef SUPERIO_UART_PM_LDN
#define SUPERIO_UART_LDN 8
#include <superio/acpi/pnp_uart.asl>
#endif
#ifdef IT8786E_SHOW_UARTD
#undef SUPERIO_UART_LDN
#undef SUPERIO_UART_DDN
#undef SUPERIO_UART_PM_REG
#undef SUPERIO_UART_PM_VAL
#undef SUPERIO_UART_PM_LDN
#define SUPERIO_UART_LDN 9
#include <superio/acpi/pnp_uart.asl>
#endif
}
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