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/*
* Arm SCP/MCP Software
* Copyright (c) 2018-2020, Arm Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include "low_level_access.h"
#include "synquacer_mmap.h"
#include <sysdef_option.h>
#include <internal/gpio.h>
#include <mod_synquacer_system.h>
#include <fwk_log.h>
#include <fwk_macros.h>
#include <inttypes.h>
#include <stddef.h>
#include <stdint.h>
static const uint8_t prmux_pingrp[] = CONFIG_SCB_PRMUX_PINGRP;
static const uint8_t gpio_direction[] = CONFIG_SCB_GPIO_DIRECTION;
static const uint8_t gpio_function[] = CONFIG_SCB_GPIO_FUNCTION;
void prmux_set_pingrp(void *prmux_base_addr, uint32_t idx, uint32_t pingrp)
{
if (idx > PRMUX_MAX_IDX) {
FWK_LOG_ERR("Error@%s idx(%" PRIu32 ") too big", __func__, idx);
return;
}
writel((uint32_t)prmux_base_addr + (idx << 2), pingrp);
}
void gpio_set_data(void *gpio_base_addr, uint32_t idx, uint8_t value)
{
if (idx > GPIO_MAX_IDX) {
FWK_LOG_ERR("Error@%s idx(%" PRIu32 ") too big", __func__, idx);
return;
}
writel((uint32_t)gpio_base_addr + (idx << 2), value);
}
uint8_t gpio_get_data(void *gpio_base_addr, uint32_t idx)
{
if (idx > GPIO_MAX_IDX) {
FWK_LOG_ERR("Error@%s idx(%" PRIu32 ") too big", __func__, idx);
return 0;
}
return readl((uint32_t)gpio_base_addr + (idx << 2));
}
void gpio_set_direction(void *gpio_base_addr, uint32_t idx, uint8_t value)
{
if (idx > GPIO_MAX_IDX) {
FWK_LOG_ERR("Error@%s idx(%" PRIu32 ") too big", __func__, idx);
return;
}
writel((uint32_t)gpio_base_addr + 0x10 + (idx << 2), value);
}
uint8_t gpio_get_direction(void *gpio_base_addr, uint32_t idx)
{
if (idx > GPIO_MAX_IDX) {
FWK_LOG_ERR("Error@%s idx(%" PRIu32 ") too big", __func__, idx);
return 0;
}
return readl((uint32_t)gpio_base_addr + 0x10 + (idx << 2));
}
void gpio_set_function(void *gpio_base_addr, uint32_t idx, uint8_t value)
{
if (idx > GPIO_MAX_IDX) {
FWK_LOG_ERR("Error@%s idx(%" PRIu32 ") too big", __func__, idx);
return;
}
writel((uint32_t)gpio_base_addr + 0x20 + (idx << 2), value);
}
uint8_t gpio_get_function(void *gpio_base_addr, uint32_t idx)
{
if (idx > GPIO_MAX_IDX) {
FWK_LOG_ERR("Error@%s idx(%" PRIu32 ") too big", __func__, idx);
return 0;
}
return readl((uint32_t)gpio_base_addr + 0x20 + (idx << 2));
}
void fw_gpio_init(void)
{
size_t i;
uint32_t gpio_initial_values;
uint32_t gpio_desc_num;
const struct sysdef_option_gpio_desc *gpio_desc_p;
FWK_LOG_INFO("[SYSTEM] Setting up PRMUX");
for (i = 0; i < FWK_ARRAY_SIZE(prmux_pingrp); i++) {
prmux_set_pingrp(
(void *)CONFIG_SOC_PRMUX_BASE_ADDR, i, prmux_pingrp[i]);
}
FWK_LOG_INFO("[SYSTEM] Finished setting up PRMUX");
FWK_LOG_INFO("[SYSTEM] Setting up GPIO");
for (i = 0; i < FWK_ARRAY_SIZE(gpio_function); i++)
gpio_set_function((void *)CONFIG_SOC_AP_GPIO_BASE, i, gpio_function[i]);
for (i = 0; i < FWK_ARRAY_SIZE(gpio_direction); i++)
gpio_set_direction(
(void *)CONFIG_SOC_AP_GPIO_BASE, i, gpio_direction[i]);
FWK_LOG_INFO("[SYSTEM] Finished setting up GPIO");
gpio_initial_values =
(gpio_get_data((void *)CONFIG_SOC_AP_GPIO_BASE, 3) << 24) |
(gpio_get_data((void *)CONFIG_SOC_AP_GPIO_BASE, 2) << 16) |
(gpio_get_data((void *)CONFIG_SOC_AP_GPIO_BASE, 1) << 8) |
gpio_get_data((void *)CONFIG_SOC_AP_GPIO_BASE, 0);
FWK_LOG_INFO(
"[SYSTEM] Initial GPIO input values = 0x%08" PRIx32 ": ",
gpio_initial_values);
gpio_desc_num = sysdef_option_get_gpio_desc(&gpio_desc_p);
for (i = 0; i < gpio_desc_num; i++) {
if (((gpio_initial_values >> gpio_desc_p->pin_no) & 0x1) ==
(gpio_desc_p->inv ? 1 : 0)) {
/* prepend "!" if the target signal is not asserted */
FWK_LOG_INFO("!");
}
FWK_LOG_INFO("%s ", gpio_desc_p->str);
}
}
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