| /* |
| * Copyright (c) ENE Technology Inc. |
| * |
| * SPDX-License-Identifier: Apache-2.0 |
| */ |
| |
| #define DT_DRV_COMPAT ene_kb1200_pinctrl |
| |
| #include <zephyr/devicetree.h> |
| #include <zephyr/drivers/pinctrl.h> |
| #include <zephyr/sys/util_macro.h> |
| #include <zephyr/dt-bindings/pinctrl/ene-kb1200-pinctrl.h> |
| #include <zephyr/sys/util.h> |
| #include <reg/gcfg.h> |
| #include <reg/gpio.h> |
| |
| /* |
| * PINMUX_FUNC_A : GPIO Function |
| * PINMUX_FUNC_B : AltOutput 1 Function |
| * PINMUX_FUNC_C : AltOutput 2 Function |
| * PINMUX_FUNC_D : AltOutput 3 Function |
| * PINMUX_FUNC_E : AltOutput 4 Function |
| * |
| * GPIO Alternate Output Function Selection |
| * (PINMUX_FUNC_A) (PINMUX_FUNC_B) (PINMUX_FUNC_C) (PINMUX_FUNC_D) (PINMUX_FUNC_E) |
| * GPIO00 PWMLED0 PWM8 |
| * GPIO01 SER_RXD1 UART_SIN SBUD_DAT |
| * GPIO03 SER_TXD1 UART_SOUT SBUD_CLK |
| * GPIO22 ESBDAT PWM9 |
| * GPIO28 32KOUT SERCLK2 |
| * GPIO36 UARTSOUT SERTXD2 |
| * GPIO5C KSO6 P80DAT |
| * GPIO5D KSO7 P80CLK |
| * GPIO5E KSO8 SERRXD1 |
| * GPIO5F KSO9 SERTXD1 |
| * GPIO71 SDA8 UARTRTS |
| * GPIO38 SCL4 PWM1 |
| */ |
| |
| /* |
| * f is function number |
| * b[7:5] = pin bank |
| * b[4:0] = pin position in bank |
| * b[11:8] = function |
| */ |
| |
| #define ENE_KB1200_PINMUX_PIN(p) FIELD_GET(GENMASK(4, 0), p) |
| #define ENE_KB1200_PINMUX_PORT(p) FIELD_GET(GENMASK(7, 5), p) |
| #define ENE_KB1200_PINMUX_FUNC(p) FIELD_GET(GENMASK(11, 8), p) |
| #define ENE_KB1200_PINMUX_PORT_PIN(p) FIELD_GET(GENMASK(7, 0), p) |
| |
| static const uint32_t gcfg_reg_addr = DT_REG_ADDR(DT_NODELABEL(gcfg)); |
| static const uint32_t gpio_reg_bases[] = { |
| DT_REG_ADDR(DT_NODELABEL(gpio0x1x)), |
| DT_REG_ADDR(DT_NODELABEL(gpio2x3x)), |
| DT_REG_ADDR(DT_NODELABEL(gpio4x5x)), |
| DT_REG_ADDR(DT_NODELABEL(gpio6x7x)), |
| }; |
| |
| static int kb1200_config_pin(uint32_t gpio, uint32_t conf, uint32_t func) |
| { |
| uint32_t port = ENE_KB1200_PINMUX_PORT(gpio); |
| uint32_t pin = (uint32_t)ENE_KB1200_PINMUX_PIN(gpio); |
| struct gpio_regs *gpio_regs = (struct gpio_regs *)gpio_reg_bases[port]; |
| struct gcfg_regs *gcfg_regs = (struct gcfg_regs *)gcfg_reg_addr; |
| |
| if (port >= NUM_KB1200_GPIO_PORTS) { |
| return -EINVAL; |
| } |
| |
| if (func == PINMUX_FUNC_GPIO) { /* only GPIO function */ |
| WRITE_BIT(gpio_regs->GPIOFS, pin, 0); |
| } else { |
| func -= 1; /*for change to GPIOALT setting value*/ |
| switch (gpio) { |
| case GPIO00_PWMLED0_PWM8: |
| WRITE_BIT(gcfg_regs->GPIOALT, 0, func); |
| break; |
| case GPIO01_SERRXD1_UARTSIN: |
| gcfg_regs->GPIOMUX = (gcfg_regs->GPIOMUX & ~(3 << 9)) | (func << 9); |
| break; |
| case GPIO03_SERTXD1_UARTSOUT: |
| gcfg_regs->GPIOMUX = (gcfg_regs->GPIOMUX & ~(3 << 9)) | (func << 9); |
| break; |
| case GPIO22_ESBDAT_PWM9: |
| WRITE_BIT(gcfg_regs->GPIOALT, 1, func); |
| break; |
| case GPIO28_32KOUT_SERCLK2: |
| WRITE_BIT(gcfg_regs->GPIOALT, 2, func); |
| break; |
| case GPIO36_UARTSOUT_SERTXD2: |
| WRITE_BIT(gcfg_regs->GPIOALT, 3, func); |
| break; |
| case GPIO5C_KSO6_P80DAT: |
| WRITE_BIT(gcfg_regs->GPIOALT, 4, func); |
| break; |
| case GPIO5D_KSO7_P80CLK: |
| WRITE_BIT(gcfg_regs->GPIOALT, 5, func); |
| break; |
| case GPIO5E_KSO8_SERRXD1: |
| WRITE_BIT(gcfg_regs->GPIOALT, 6, func); |
| break; |
| case GPIO5F_KSO9_SERTXD1: |
| WRITE_BIT(gcfg_regs->GPIOALT, 7, func); |
| break; |
| case GPIO71_SDA8_UARTRTS: |
| WRITE_BIT(gcfg_regs->GPIOALT, 8, func); |
| break; |
| case GPIO38_SCL4_PWM1: |
| WRITE_BIT(gcfg_regs->GPIOALT, 9, func); |
| break; |
| } |
| WRITE_BIT(gpio_regs->GPIOFS, pin, 1); |
| } |
| /*Input always enable for loopback*/ |
| WRITE_BIT(gpio_regs->GPIOIE, pin, 1); |
| |
| if (conf & BIT(ENE_KB1200_NO_PUD_POS)) { |
| WRITE_BIT(gpio_regs->GPIOPU, pin, 0); |
| WRITE_BIT(gpio_regs->GPIOPD, pin, 0); |
| } |
| if (conf & BIT(ENE_KB1200_PU_POS)) { |
| WRITE_BIT(gpio_regs->GPIOPU, pin, 1); |
| } |
| if (conf & BIT(ENE_KB1200_PD_POS)) { |
| WRITE_BIT(gpio_regs->GPIOPD, pin, 1); |
| } |
| |
| if (conf & BIT(ENE_KB1200_OUT_DIS_POS)) { |
| WRITE_BIT(gpio_regs->GPIOOE, pin, 0); |
| } |
| if (conf & BIT(ENE_KB1200_OUT_EN_POS)) { |
| WRITE_BIT(gpio_regs->GPIOOE, pin, 1); |
| } |
| |
| if (conf & BIT(ENE_KB1200_OUT_LO_POS)) { |
| WRITE_BIT(gpio_regs->GPIOD, pin, 0); |
| } |
| if (conf & BIT(ENE_KB1200_OUT_HI_POS)) { |
| WRITE_BIT(gpio_regs->GPIOD, pin, 1); |
| } |
| |
| if (conf & BIT(ENE_KB1200_PUSH_PULL_POS)) { |
| WRITE_BIT(gpio_regs->GPIOOD, pin, 0); |
| } |
| if (conf & BIT(ENE_KB1200_OPEN_DRAIN_POS)) { |
| WRITE_BIT(gpio_regs->GPIOOD, pin, 1); |
| } |
| |
| if (conf & BIT(ENE_KB1200_PIN_LOW_POWER_POS)) { |
| WRITE_BIT(gpio_regs->GPIOLV, pin, 1); |
| } |
| |
| return 0; |
| } |
| |
| int pinctrl_configure_pins(const pinctrl_soc_pin_t *pins, uint8_t pin_cnt, uintptr_t reg) |
| { |
| uint32_t portpin, pinmux, func; |
| int ret; |
| |
| ARG_UNUSED(reg); |
| |
| for (uint8_t i = 0U; i < pin_cnt; i++) { |
| pinmux = pins[i]; |
| |
| func = ENE_KB1200_PINMUX_FUNC(pinmux); |
| if (func >= PINMUX_FUNC_MAX) { |
| return -EINVAL; |
| } |
| |
| portpin = ENE_KB1200_PINMUX_PORT_PIN(pinmux); |
| |
| ret = kb1200_config_pin(portpin, pinmux, func); |
| if (ret < 0) { |
| return ret; |
| } |
| } |
| |
| return 0; |
| } |