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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2012 Google Inc. All rights reserved.
*
* 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 INTEL_LYNXPOINT_LP_GPIO_H
#define INTEL_LYNXPOINT_LP_GPIO_H
/* LynxPoint LP GPIOBASE Registers */
#define GPIO_OWNER(set) (0x00 + ((set) * 4))
#define GPIO_PIRQ_APIC_EN 0x10
#define GPIO_BLINK 0x18
#define GPIO_SER_BLINK 0x1c
#define GPIO_SER_BLINK_CS 0x20
#define GPIO_SER_BLINK_DATA 0x24
#define GPIO_ROUTE(set) (0x30 + ((set) * 4))
#define GPIO_RESET(set) (0x60 + ((set) * 4))
#define GPIO_GLOBAL_CONFIG 0x7c
#define GPIO_IRQ_IS(set) (0x80 + ((set) * 4))
#define GPIO_IRQ_IE(set) (0x90 + ((set) * 4))
#define GPIO_CONFIG0(gpio) (0x100 + ((gpio) * 8))
#define GPIO_CONFIG1(gpio) (0x104 + ((gpio) * 8))
#define MAX_GPIO_NUMBER 94 /* zero based */
#define GPIO_LIST_END 0xffffffff
/* conf0 */
#define GPIO_MODE_NATIVE (0 << 0)
#define GPIO_MODE_GPIO (1 << 0)
#define GPIO_DIR_OUTPUT (0 << 2)
#define GPIO_DIR_INPUT (1 << 2)
#define GPIO_NO_INVERT (0 << 3)
#define GPIO_INVERT (1 << 3)
#define GPIO_IRQ_EDGE (0 << 4)
#define GPIO_IRQ_LEVEL (1 << 4)
#define GPI_LEVEL (1 << 30)
#define GPO_LEVEL_SHIFT 31
#define GPO_LEVEL_MASK (1UL << GPO_LEVEL_SHIFT)
#define GPO_LEVEL_LOW (0UL << GPO_LEVEL_SHIFT)
#define GPO_LEVEL_HIGH (1UL << GPO_LEVEL_SHIFT)
/* conf1 */
#define GPIO_PULL_NONE (0 << 0)
#define GPIO_PULL_DOWN (1 << 0)
#define GPIO_PULL_UP (2 << 0)
#define GPIO_SENSE_ENABLE (0 << 2)
#define GPIO_SENSE_DISABLE (1 << 2)
/* owner */
#define GPIO_OWNER_ACPI 0
#define GPIO_OWNER_GPIO 1
/* route */
#define GPIO_ROUTE_SCI 0
#define GPIO_ROUTE_SMI 1
/* irqen */
#define GPIO_IRQ_DISABLE 0
#define GPIO_IRQ_ENABLE 1
/* blink */
#define GPO_NO_BLINK 0
#define GPO_BLINK 1
/* reset */
#define GPIO_RESET_PWROK 0
#define GPIO_RESET_RSMRST 1
/* pirq route to io-apic */
#define GPIO_PIRQ_APIC_MASK 0
#define GPIO_PIRQ_APIC_ROUTE 1
#define LP_GPIO_END \
{ .conf0 = GPIO_LIST_END }
#define LP_GPIO_NATIVE \
{ .conf0 = GPIO_MODE_NATIVE }
#define LP_GPIO_UNUSED \
{ .conf0 = GPIO_MODE_GPIO | GPIO_DIR_INPUT, \
.owner = GPIO_OWNER_GPIO, \
.conf1 = GPIO_SENSE_DISABLE }
#define LP_GPIO_ACPI_SCI \
{ .conf0 = GPIO_MODE_GPIO | GPIO_DIR_INPUT | GPIO_INVERT, \
.owner = GPIO_OWNER_ACPI, \
.route = GPIO_ROUTE_SCI }
#define LP_GPIO_ACPI_SMI \
{ .conf0 = GPIO_MODE_GPIO | GPIO_DIR_INPUT | GPIO_INVERT, \
.owner = GPIO_OWNER_ACPI, \
.route = GPIO_ROUTE_SMI }
#define LP_GPIO_INPUT \
{ .conf0 = GPIO_MODE_GPIO | GPIO_DIR_INPUT, \
.owner = GPIO_OWNER_GPIO }
#define LP_GPIO_INPUT_INVERT \
{ .conf0 = GPIO_MODE_GPIO | GPIO_DIR_INPUT | GPIO_INVERT, \
.owner = GPIO_OWNER_GPIO }
#define LP_GPIO_IRQ_EDGE \
{ .conf0 = GPIO_MODE_GPIO | GPIO_DIR_INPUT | GPIO_IRQ_EDGE, \
.owner = GPIO_OWNER_GPIO, \
.irqen = GPIO_IRQ_ENABLE }
#define LP_GPIO_IRQ_LEVEL \
{ .conf0 = GPIO_MODE_GPIO | GPIO_DIR_INPUT | GPIO_IRQ_LEVEL, \
.owner = GPIO_OWNER_GPIO, \
.irqen = GPIO_IRQ_ENABLE }
#define LP_GPIO_PIRQ \
{ .conf0 = GPIO_MODE_GPIO | GPIO_DIR_INPUT, \
.owner = GPIO_OWNER_GPIO, \
.pirq = GPIO_PIRQ_APIC_ROUTE }
#define LP_GPIO_OUT_HIGH \
{ .conf0 = GPIO_MODE_GPIO | GPIO_DIR_OUTPUT | GPO_LEVEL_HIGH, \
.owner = GPIO_OWNER_GPIO, \
.conf1 = GPIO_SENSE_DISABLE }
#define LP_GPIO_OUT_LOW \
{ .conf0 = GPIO_MODE_GPIO | GPIO_DIR_OUTPUT | GPO_LEVEL_LOW, \
.owner = GPIO_OWNER_GPIO, \
.conf1 = GPIO_SENSE_DISABLE }
struct pch_lp_gpio_map {
u8 gpio;
u32 conf0;
u32 conf1;
u8 owner;
u8 route;
u8 irqen;
u8 reset;
u8 blink;
u8 pirq;
} __packed;
/* Configure GPIOs with mainboard provided settings */
void setup_pch_lp_gpios(const struct pch_lp_gpio_map map[]);
/* get GPIO pin value */
int get_gpio(int gpio_num);
/*
* get a number comprised of multiple GPIO values. gpio_num_array points to
* the array of gpio pin numbers to scan, terminated by -1.
*/
unsigned get_gpios(const int *gpio_num_array);
void set_gpio(int gpio_num, int value);
int gpio_is_native(int gpio_num);
#endif
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