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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2011 The Chromium OS Authors. All rights reserved.
* Copyright (C) 2013 Sage Electronic Engineering, LLC.
*
* 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_I89XX_GPIO_H
#define INTEL_I89XX_GPIO_H
#include <compiler.h>
#define GPIO_MODE_NATIVE 0
#define GPIO_MODE_GPIO 1
#define GPIO_MODE_NONE 1
#define GPIO_DIR_OUTPUT 0
#define GPIO_DIR_INPUT 1
#define GPIO_NO_INVERT 0
#define GPIO_INVERT 1
#define GPIO_LEVEL_LOW 0
#define GPIO_LEVEL_HIGH 1
#define GPIO_NO_BLINK 0
#define GPIO_BLINK 1
#define GPIO_RESET_PWROK 0
#define GPIO_RESET_RSMRST 1
struct pch_gpio_set1 {
u32 gpio0 : 1;
u32 gpio1 : 1;
u32 gpio2 : 1;
u32 gpio3 : 1;
u32 gpio4 : 1;
u32 gpio5 : 1;
u32 gpio6 : 1;
u32 gpio7 : 1;
u32 gpio8 : 1;
u32 gpio9 : 1;
u32 gpio10 : 1;
u32 gpio11 : 1;
u32 gpio12 : 1;
u32 gpio13 : 1;
u32 gpio14 : 1;
u32 gpio15 : 1;
u32 gpio16 : 1;
u32 gpio17 : 1;
u32 gpio18 : 1;
u32 gpio19 : 1;
u32 gpio20 : 1;
u32 gpio21 : 1;
u32 gpio22 : 1;
u32 gpio23 : 1;
u32 gpio24 : 1;
u32 gpio25 : 1;
u32 gpio26 : 1;
u32 gpio27 : 1;
u32 gpio28 : 1;
u32 gpio29 : 1;
u32 gpio30 : 1;
u32 gpio31 : 1;
} __packed;
struct pch_gpio_set2 {
u32 gpio32 : 1;
u32 gpio33 : 1;
u32 gpio34 : 1;
u32 gpio35 : 1;
u32 gpio36 : 1;
u32 gpio37 : 1;
u32 gpio38 : 1;
u32 gpio39 : 1;
u32 gpio40 : 1;
u32 gpio41 : 1;
u32 gpio42 : 1;
u32 gpio43 : 1;
u32 gpio44 : 1;
u32 gpio45 : 1;
u32 gpio46 : 1;
u32 gpio47 : 1;
u32 gpio48 : 1;
u32 gpio49 : 1;
u32 gpio50 : 1;
u32 gpio51 : 1;
u32 gpio52 : 1;
u32 gpio53 : 1;
u32 gpio54 : 1;
u32 gpio55 : 1;
u32 gpio56 : 1;
u32 gpio57 : 1;
u32 gpio58 : 1;
u32 gpio59 : 1;
u32 gpio60 : 1;
u32 gpio61 : 1;
u32 gpio62 : 1;
u32 gpio63 : 1;
} __packed;
struct pch_gpio_set3 {
u32 gpio64 : 1;
u32 gpio65 : 1;
u32 gpio66 : 1;
u32 gpio67 : 1;
u32 gpio68 : 1;
u32 gpio69 : 1;
u32 gpio70 : 1;
u32 gpio71 : 1;
u32 gpio72 : 1;
u32 gpio73 : 1;
u32 gpio74 : 1;
u32 gpio75 : 1;
u32 fill_bitfield : 20;
} __packed;
struct pch_gpio_map {
union {
struct {
const struct pch_gpio_set1 *mode;
const struct pch_gpio_set1 *direction;
const struct pch_gpio_set1 *level;
const struct pch_gpio_set1 *reset;
const struct pch_gpio_set1 *invert;
const struct pch_gpio_set1 *blink;
} set1;
struct {
const u32 *mode;
const u32 *direction;
const u32 *level;
const u32 *reset;
const u32 *invert;
const u32 *blink;
} set1_vals;
};
union {
struct {
const struct pch_gpio_set2 *mode;
const struct pch_gpio_set2 *direction;
const struct pch_gpio_set2 *level;
const struct pch_gpio_set2 *reset;
} set2;
struct {
const u32 *mode;
const u32 *direction;
const u32 *level;
const u32 *reset;
} set2_vals;
};
union {
struct {
const struct pch_gpio_set3 *mode;
const struct pch_gpio_set3 *direction;
const struct pch_gpio_set3 *level;
const struct pch_gpio_set3 *reset;
} set3;
struct {
const u32 *mode;
const u32 *direction;
const u32 *level;
const u32 *reset;
} set3_vals;
};
};
/* Configure GPIOs with mainboard provided settings */
void setup_pch_gpios(const struct pch_gpio_map *gpio);
/* get GPIO and set pin values */
int get_gpio(int gpio_num);
void set_gpio(int gpio_num);
void clear_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);
#endif
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