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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 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 W83627DHG 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 and controlling power
* saving mode on logical devices or the whole chip.
*
* LDN State
* 0x0 FDC Not implemented
* 0x1 PP Not implemented
* 0x2 UARTA Implemented, partially tested
* 0x3 UARTB UART only, partially tested
* 0x5 KBC Implemented, untested
* 0x6 SPI Not implemented
* 0x7 GPIO6 Not implemented
* 0x8 WDT0&PLED Not implemented
* 0x9 GPIO2-5 Not implemented
* 0xa ACPI Not implemented
* 0xb HWM Resources, PM only
* 0xc PECI&SST 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
* W83627DHG_SHOW_UARTA If defined, UARTA will be exposed.
* W83627DHG_SHOW_UARTB If defined, UARTB will be exposed.
* W83627DHG_SHOW_KBC If defined, the KBC will be exposed.
* W83627DHG_SHOW_PS2M If defined, PS/2 mouse support will be exposed.
* W83627DHG_SHOW_HWMON If defined, the hardware monitor will be exposed.
*/
#undef SUPERIO_CHIP_NAME
#define SUPERIO_CHIP_NAME W83627DHG
#include <superio/acpi/pnp.asl>
Device(SUPERIO_DEV) {
Name (_HID, EisaId("PNP0A05"))
Name (_STR, Unicode("Winbond W83627DHG 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 (ADDR, DATA, ByteAcc, NoLock, Preserve)
{
Offset (0x07),
PNP_LOGICAL_DEVICE, 8, /* Logical device selector */
Offset (0x22),
FDPW, 1, /* FDC Power Down */
, 2,
PRPW, 1, /* PRT Power Down */
UAPW, 1, /* UART A Power Down */
UBPW, 1, /* UART B Power Down */
HWPW, 1, /* HWM Power Down */
Offset (0x23),
IPD, 1, /* Immediate Chip Power Down */
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 */
Offset (0x72),
PNP_IRQ1, 8, /* Second IRQ */
Offset (0x74),
PNP_DMA0, 8, /* DMA */
Offset (0xf3),
SULM, 8, /* Suspend LED Mode Register */
}
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
#undef PNP_EXIT_SPECIAL_REG
#undef PNP_EXIT_SPECIAL_VAL
#define PNP_ENTER_MAGIC_1ST 0x87
#define PNP_ENTER_MAGIC_2ND 0x87
#define PNP_EXIT_MAGIC_1ST 0xaa
#include <superio/acpi/pnp_config.asl>
/* PM: indicate IPD (Immediate Power Down) bit state as D0/D2 */
Method (_PSC) {
ENTER_CONFIG_MODE (PNP_NO_LDN_CHANGE)
Store (IPD, Local0)
EXIT_CONFIG_MODE ()
If (Local0) { Return (2) }
Else { Return (0) }
}
/* PM: Switch to D0 by setting IPD low */
Method (_PS0) {
ENTER_CONFIG_MODE (PNP_NO_LDN_CHANGE)
Store (Zero, IPD)
EXIT_CONFIG_MODE ()
}
/* PM: Switch to D2 by setting IPD high */
Method (_PS2) {
ENTER_CONFIG_MODE (PNP_NO_LDN_CHANGE)
Store (One, IPD)
EXIT_CONFIG_MODE ()
}
/* Suspend LED: Write given three-bit value into appropriate register.
From the datasheet:
000 - drive pin constantly high
001 - drive 0.5Hz pulses
010 - drive pin constantly low
011 - drive 2Hz pulses
100 - drive 1Hz pulses
101 - drive 4Hz pulses
110 - drive 0.25Hz pulses
111 - drive 0.25Hz pulses
(all pulses with 50% duty cycle) */
#define SUPERIO_SUSL_LDN 9
Method (SUSL, 1, Serialized) {
ENTER_CONFIG_MODE (SUPERIO_SUSL_LDN)
Store (SULM, Local0)
And (Local0, 0x1f, Local0)
Or (Local0, ShiftLeft (Arg0, 5), Local0)
Store (Local0, SULM)
EXIT_CONFIG_MODE ()
}
#ifdef W83627DHG_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 2
#define SUPERIO_UART_PM_REG UAPW
#define SUPERIO_UART_PM_VAL 0
#define SUPERIO_UART_PM_LDN PNP_NO_LDN_CHANGE
#include <superio/acpi/pnp_uart.asl>
#endif
#ifdef W83627DHG_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 3
#define SUPERIO_UART_PM_REG UBPW
#define SUPERIO_UART_PM_VAL 0
#define SUPERIO_UART_PM_LDN PNP_NO_LDN_CHANGE
#include <superio/acpi/pnp_uart.asl>
#endif
#ifdef W83627DHG_SHOW_KBC
#undef SUPERIO_KBC_LDN
#undef SUPERIO_KBC_PS2M
#undef SUPERIO_KBC_PS2LDN
#define SUPERIO_KBC_LDN 5
#ifdef W83627DHG_SHOW_PS2M
#define SUPERIO_KBC_PS2M 1
#endif
#include <superio/acpi/pnp_kbc.asl>
#endif
#ifdef W83627DHG_SHOW_HWMON
#undef SUPERIO_PNP_LDN
#undef SUPERIO_PNP_DDN
#undef SUPERIO_PNP_PM_REG
#undef SUPERIO_PNP_PM_VAL
#undef SUPERIO_PNP_PM_LDN
#undef SUPERIO_PNP_IO0
#undef SUPERIO_PNP_IO1
#undef SUPERIO_PNP_IRQ0
#undef SUPERIO_PNP_IRQ1
#undef SUPERIO_PNP_DMA
#define SUPERIO_PNP_LDN 11
#define SUPERIO_PNP_PM_REG HWPW
#define SUPERIO_PNP_PM_VAL 0
#define SUPERIO_PNP_PM_LDN PNP_NO_LDN_CHANGE
#define SUPERIO_PNP_IO0 0x08, 0x08
#define SUPERIO_PNP_IRQ0 1
#include <superio/acpi/pnp_generic.asl>
#endif
}
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