287 lines
6.5 KiB
C
287 lines
6.5 KiB
C
/*
|
|
* Copyright (c) 2022 Espressif Systems (Shanghai) Co., Ltd.
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*/
|
|
|
|
/* Include esp-idf headers first to avoid redefining BIT() macro */
|
|
#include <hal/gpio_ll.h>
|
|
#include <hal/rtc_io_hal.h>
|
|
|
|
#include <soc.h>
|
|
#include <zephyr/drivers/pinctrl.h>
|
|
#include <zephyr/drivers/pinctrl/pinctrl_esp32_common.h>
|
|
|
|
#ifdef CONFIG_SOC_ESP32C3
|
|
/* gpio structs in esp32c3 series are different from xtensa ones */
|
|
#define out out.data
|
|
#define in in.data
|
|
#define out_w1ts out_w1ts.val
|
|
#define out_w1tc out_w1tc.val
|
|
#endif
|
|
|
|
#ifndef SOC_GPIO_SUPPORT_RTC_INDEPENDENT
|
|
#define SOC_GPIO_SUPPORT_RTC_INDEPENDENT 0
|
|
#endif
|
|
|
|
#define ESP32_INVALID_PORT_ADDR 0UL
|
|
|
|
#define ESP32_GPIO_PORT_ADDR(nodelabel) \
|
|
COND_CODE_1(DT_NODE_EXISTS(DT_NODELABEL(nodelabel)), \
|
|
(DT_REG_ADDR(DT_NODELABEL(nodelabel)),), \
|
|
(ESP32_INVALID_PORT_ADDR))
|
|
|
|
/**
|
|
* @brief Array containing each GPIO port address.
|
|
*
|
|
* Entries will be an invalid address if the port is not enabled.
|
|
*/
|
|
static const uint32_t esp32_gpio_ports_addrs[] = {
|
|
ESP32_GPIO_PORT_ADDR(gpio0)
|
|
ESP32_GPIO_PORT_ADDR(gpio1)
|
|
};
|
|
|
|
/** Number of GPIO ports. */
|
|
static const size_t esp32_gpio_ports_cnt = ARRAY_SIZE(esp32_gpio_ports_addrs);
|
|
|
|
static inline bool rtc_gpio_is_valid_gpio(uint32_t gpio_num)
|
|
{
|
|
#if SOC_RTCIO_INPUT_OUTPUT_SUPPORTED
|
|
return (gpio_num < SOC_GPIO_PIN_COUNT && rtc_io_num_map[gpio_num] >= 0);
|
|
#else
|
|
return false;
|
|
#endif
|
|
}
|
|
|
|
static inline bool esp32_pin_is_valid(uint32_t pin)
|
|
{
|
|
return ((BIT(pin) & SOC_GPIO_VALID_GPIO_MASK) != 0);
|
|
}
|
|
|
|
static inline bool esp32_pin_is_output_capable(uint32_t pin)
|
|
{
|
|
return ((BIT(pin) & SOC_GPIO_VALID_OUTPUT_GPIO_MASK) != 0);
|
|
}
|
|
|
|
static int esp32_pin_apply_config(uint32_t pin, uint32_t flags)
|
|
{
|
|
gpio_dev_t *const gpio_base = (gpio_dev_t *)DT_REG_ADDR(DT_NODELABEL(gpio0));
|
|
uint32_t io_pin = (uint32_t) pin + ((ESP32_PORT_IDX(pin) == 1 && pin < 32) ? 32 : 0);
|
|
int ret = 0;
|
|
|
|
if (!esp32_pin_is_valid(io_pin)) {
|
|
return -EINVAL;
|
|
}
|
|
|
|
#if SOC_RTCIO_INPUT_OUTPUT_SUPPORTED
|
|
if (rtc_gpio_is_valid_gpio(io_pin)) {
|
|
rtcio_hal_function_select(rtc_io_num_map[io_pin], RTCIO_FUNC_DIGITAL);
|
|
}
|
|
#endif
|
|
|
|
if (io_pin >= GPIO_NUM_MAX) {
|
|
ret = -EINVAL;
|
|
goto end;
|
|
}
|
|
|
|
/* Set pin function as GPIO */
|
|
gpio_ll_iomux_func_sel(GPIO_PIN_MUX_REG[io_pin], PIN_FUNC_GPIO);
|
|
|
|
if (flags & ESP32_PULL_UP_FLAG) {
|
|
if (!rtc_gpio_is_valid_gpio(io_pin) || SOC_GPIO_SUPPORT_RTC_INDEPENDENT) {
|
|
gpio_ll_pulldown_dis(&GPIO, io_pin);
|
|
gpio_ll_pullup_en(&GPIO, io_pin);
|
|
} else {
|
|
#if SOC_RTCIO_INPUT_OUTPUT_SUPPORTED
|
|
int rtcio_num = rtc_io_num_map[io_pin];
|
|
|
|
rtcio_hal_pulldown_disable(rtc_io_num_map[io_pin]);
|
|
|
|
if (rtc_io_desc[rtcio_num].pullup) {
|
|
rtcio_hal_pullup_enable(rtc_io_num_map[io_pin]);
|
|
} else {
|
|
ret = -ENOTSUP;
|
|
goto end;
|
|
}
|
|
#endif
|
|
}
|
|
} else if (flags & ESP32_PULL_DOWN_FLAG) {
|
|
if (!rtc_gpio_is_valid_gpio(io_pin) || SOC_GPIO_SUPPORT_RTC_INDEPENDENT) {
|
|
gpio_ll_pullup_dis(&GPIO, io_pin);
|
|
gpio_ll_pulldown_en(&GPIO, io_pin);
|
|
} else {
|
|
#if SOC_RTCIO_INPUT_OUTPUT_SUPPORTED
|
|
int rtcio_num = rtc_io_num_map[io_pin];
|
|
|
|
rtcio_hal_pulldown_enable(rtc_io_num_map[io_pin]);
|
|
|
|
if (rtc_io_desc[rtcio_num].pullup) {
|
|
rtcio_hal_pullup_disable(rtc_io_num_map[io_pin]);
|
|
} else {
|
|
ret = -ENOTSUP;
|
|
goto end;
|
|
}
|
|
#endif
|
|
}
|
|
}
|
|
|
|
if (flags & ESP32_DIR_OUT_FLAG) {
|
|
if (!esp32_pin_is_output_capable(pin)) {
|
|
ret = -EINVAL;
|
|
goto end;
|
|
}
|
|
|
|
if (flags & ESP32_OPEN_DRAIN_FLAG) {
|
|
gpio_ll_od_enable(gpio_base, io_pin);
|
|
} else {
|
|
gpio_ll_od_disable(gpio_base, io_pin);
|
|
}
|
|
|
|
/* Set output pin initial value */
|
|
if (flags & ESP32_PIN_OUT_HIGH_FLAG) {
|
|
gpio_ll_set_level(gpio_base, io_pin, 1);
|
|
} else if (flags & ESP32_PIN_OUT_LOW_FLAG) {
|
|
gpio_ll_set_level(gpio_base, io_pin, 0);
|
|
}
|
|
|
|
gpio_ll_output_enable(&GPIO, io_pin);
|
|
esp_rom_gpio_matrix_out(io_pin, SIG_GPIO_OUT_IDX, false, false);
|
|
} else {
|
|
gpio_ll_output_disable(&GPIO, io_pin);
|
|
}
|
|
|
|
if (flags & ESP32_DIR_INP_FLAG) {
|
|
gpio_ll_input_enable(&GPIO, io_pin);
|
|
} else {
|
|
gpio_ll_input_disable(&GPIO, io_pin);
|
|
}
|
|
|
|
end:
|
|
return ret;
|
|
}
|
|
|
|
static int esp32_pin_configure(const uint32_t pin_mux, const uint32_t pin_cfg)
|
|
{
|
|
uint32_t port_addr;
|
|
uint32_t pin_num = ESP32_PIN_NUM(pin_mux);
|
|
uint32_t sig_in = ESP32_PIN_SIGI(pin_mux);
|
|
uint32_t sig_out = ESP32_PIN_SIGO(pin_mux);
|
|
uint32_t flags = 0;
|
|
|
|
if (ESP32_PORT_IDX(pin_num) >= esp32_gpio_ports_cnt) {
|
|
return -EINVAL;
|
|
}
|
|
|
|
port_addr = esp32_gpio_ports_addrs[ESP32_PORT_IDX(pin_num)];
|
|
|
|
if (port_addr == ESP32_INVALID_PORT_ADDR) {
|
|
return -EINVAL;
|
|
}
|
|
|
|
switch (ESP32_PIN_BIAS(pin_cfg)) {
|
|
case ESP32_PULL_UP:
|
|
flags |= ESP32_PULL_UP_FLAG;
|
|
break;
|
|
case ESP32_PULL_DOWN:
|
|
flags |= ESP32_PULL_DOWN_FLAG;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
switch (ESP32_PIN_DRV(pin_cfg)) {
|
|
case ESP32_PUSH_PULL:
|
|
flags |= ESP32_PUSH_PULL_FLAG;
|
|
break;
|
|
case ESP32_OPEN_DRAIN:
|
|
flags |= ESP32_OPEN_DRAIN_FLAG;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
if (sig_in == ESP_SIG_INVAL && sig_out == ESP_SIG_INVAL) {
|
|
return -ENOTSUP;
|
|
}
|
|
|
|
if (sig_in != ESP_SIG_INVAL) {
|
|
flags |= ESP32_DIR_INP_FLAG;
|
|
}
|
|
|
|
if (sig_out != ESP_SIG_INVAL) {
|
|
flags |= ESP32_DIR_OUT_FLAG;
|
|
}
|
|
|
|
switch (ESP32_PIN_MODE_OUT(pin_cfg)) {
|
|
case ESP32_PIN_OUT_HIGH:
|
|
flags |= ESP32_PIN_OUT_HIGH_FLAG;
|
|
break;
|
|
case ESP32_PIN_OUT_LOW:
|
|
flags |= ESP32_PIN_OUT_LOW_FLAG;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
if (flags & ESP32_PIN_OUT_HIGH_FLAG) {
|
|
if (ESP32_PORT_IDX(pin_num) == 0) {
|
|
gpio_dev_t *const gpio_dev =
|
|
(gpio_dev_t *)DT_REG_ADDR(DT_NODELABEL(gpio0));
|
|
gpio_dev->out_w1ts = pin_num;
|
|
#if DT_NODE_HAS_STATUS(DT_NODELABEL(gpio1), okay)
|
|
} else {
|
|
gpio_dev_t *const gpio_dev =
|
|
(gpio_dev_t *)DT_REG_ADDR(DT_NODELABEL(gpio1));
|
|
gpio_dev->out1_w1ts.data = pin_num;
|
|
#endif
|
|
}
|
|
}
|
|
|
|
if (flags & ESP32_PIN_OUT_LOW_FLAG) {
|
|
if (ESP32_PORT_IDX(pin_num) == 0) {
|
|
gpio_dev_t *const gpio_dev =
|
|
(gpio_dev_t *)DT_REG_ADDR(DT_NODELABEL(gpio0));
|
|
gpio_dev->out_w1tc = pin_num;
|
|
#if DT_NODE_HAS_STATUS(DT_NODELABEL(gpio1), okay)
|
|
} else {
|
|
gpio_dev_t *const gpio_dev =
|
|
(gpio_dev_t *)DT_REG_ADDR(DT_NODELABEL(gpio1));
|
|
gpio_dev->out1_w1tc.data = pin_num;
|
|
#endif
|
|
}
|
|
}
|
|
|
|
esp32_pin_apply_config(pin_num, flags);
|
|
|
|
if (flags & ESP32_DIR_OUT_FLAG) {
|
|
esp_rom_gpio_matrix_out(pin_num, sig_out, 0, 0);
|
|
}
|
|
|
|
if (flags & ESP32_DIR_INP_FLAG) {
|
|
esp_rom_gpio_matrix_in(pin_num, sig_in, 0);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int pinctrl_configure_pins(const pinctrl_soc_pin_t *pins, uint8_t pin_cnt,
|
|
uintptr_t reg)
|
|
{
|
|
uint32_t pin_mux, pin_cfg;
|
|
int ret = 0;
|
|
|
|
ARG_UNUSED(reg);
|
|
|
|
for (uint8_t i = 0U; i < pin_cnt; i++) {
|
|
pin_mux = pins[i].pinmux;
|
|
pin_cfg = pins[i].pincfg;
|
|
|
|
ret = esp32_pin_configure(pin_mux, pin_cfg);
|
|
if (ret < 0) {
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|