blob: d3618393573a0cccfdf176592ac1d77440d8d3a6 [file] [log] [blame] [edit]
/*
* Copyright (c) 2022 Schlumberger
*
* SPDX-License-Identifier: Apache-2.0
*/
#define DT_DRV_COMPAT infineon_xmc4xxx_pinctrl
#include <zephyr/devicetree.h>
#include <zephyr/drivers/pinctrl.h>
#include <zephyr/dt-bindings/pinctrl/xmc4xxx-pinctrl.h>
#include <xmc_gpio.h>
#define GPIO_REG_SIZE 0x100
static int pinctrl_configure_pin(const pinctrl_soc_pin_t pinmux)
{
int port_id, pin, alt_fun, hwctrl;
XMC_GPIO_CONFIG_t pin_cfg = {0};
XMC_GPIO_PORT_t *gpio_port;
port_id = XMC4XXX_PINMUX_GET_PORT(pinmux);
if (port_id >= DT_INST_REG_SIZE(0) / GPIO_REG_SIZE) {
return -EINVAL;
}
pin = XMC4XXX_PINMUX_GET_PIN(pinmux);
if (XMC4XXX_PINMUX_GET_PULL_DOWN(pinmux)) {
pin_cfg.mode = XMC_GPIO_MODE_INPUT_PULL_DOWN;
}
if (XMC4XXX_PINMUX_GET_PULL_UP(pinmux)) {
pin_cfg.mode = XMC_GPIO_MODE_INPUT_PULL_UP;
}
if (XMC4XXX_PINMUX_GET_INV_INPUT(pinmux)) {
pin_cfg.mode |= 0x4;
}
if (XMC4XXX_PINMUX_GET_OPEN_DRAIN(pinmux)) {
pin_cfg.mode = XMC_GPIO_MODE_OUTPUT_OPEN_DRAIN;
}
if (XMC4XXX_PINMUX_GET_PUSH_PULL(pinmux)) {
pin_cfg.mode = XMC_GPIO_MODE_OUTPUT_PUSH_PULL;
}
alt_fun = XMC4XXX_PINMUX_GET_ALT(pinmux);
pin_cfg.mode |= alt_fun << PORT0_IOCR0_PC0_Pos;
/* only has effect if mode is push_pull */
if (XMC4XXX_PINMUX_GET_OUT_HIGH(pinmux)) {
pin_cfg.output_level = XMC_GPIO_OUTPUT_LEVEL_HIGH;
}
/* only has effect if mode is push_pull */
if (XMC4XXX_PINMUX_GET_OUT_LOW(pinmux)) {
pin_cfg.output_level = XMC_GPIO_OUTPUT_LEVEL_LOW;
}
/* only has effect if mode is push_pull */
pin_cfg.output_strength = XMC4XXX_PINMUX_GET_DRIVE(pinmux);
gpio_port = (XMC_GPIO_PORT_t *)((uint32_t)DT_INST_REG_ADDR(0) + port_id * GPIO_REG_SIZE);
XMC_GPIO_Init(gpio_port, pin, &pin_cfg);
hwctrl = XMC4XXX_PINMUX_GET_HWCTRL(pinmux);
if (hwctrl) {
XMC_GPIO_SetHardwareControl(gpio_port, pin, hwctrl);
}
return 0;
}
int pinctrl_configure_pins(const pinctrl_soc_pin_t *pins, uint8_t pin_cnt, uintptr_t reg)
{
ARG_UNUSED(reg);
for (uint8_t i = 0U; i < pin_cnt; i++) {
int ret = pinctrl_configure_pin(*pins++);
if (ret < 0) {
return ret;
}
}
return 0;
}