blob: ff770b53a6aa87fe933d3090694850edc54b8c80 [file] [log] [blame] [edit]
/*
* Copyright (c) 2022 Antmicro <www.antmicro.com>
*
* SPDX-License-Identifier: Apache-2.0
*/
#define DT_DRV_COMPAT sifive_pinctrl
#include <zephyr/arch/cpu.h>
#include <zephyr/devicetree.h>
#include <zephyr/drivers/pinctrl.h>
#include <zephyr/dt-bindings/pinctrl/sifive-pinctrl.h>
#include <soc.h>
#define PINCTRL_BASE_ADDR DT_INST_REG_ADDR(0)
#define PINCTRL_IOF_EN (PINCTRL_BASE_ADDR + 0x0)
#define PINCTRL_IOF_SEL (PINCTRL_BASE_ADDR + 0x4)
static int pinctrl_sifive_set(uint32_t pin, uint32_t func)
{
uint32_t val;
if (func > SIFIVE_PINMUX_IOF1 || pin >= SIFIVE_PINMUX_PINS) {
return -EINVAL;
}
val = sys_read32(PINCTRL_IOF_SEL);
if (func == SIFIVE_PINMUX_IOF1) {
val |= (SIFIVE_PINMUX_IOF1 << pin);
} else {
val &= ~(SIFIVE_PINMUX_IOF1 << pin);
}
sys_write32(val, PINCTRL_IOF_SEL);
/* Enable IO function for this pin */
val = sys_read32(PINCTRL_IOF_EN);
val |= BIT(pin);
sys_write32(val, PINCTRL_IOF_EN);
return 0;
}
int pinctrl_configure_pins(const pinctrl_soc_pin_t *pins, uint8_t pin_cnt, uintptr_t reg)
{
ARG_UNUSED(reg);
int i;
for (i = 0; i < pin_cnt; i++) {
pinctrl_sifive_set(pins[i].pin, pins[i].iof);
}
return 0;
}