| /* |
| * Copyright (c) 2016 Open-RnD Sp. z o.o. |
| * Copyright (c) 2016 BayLibre, SAS |
| * |
| * SPDX-License-Identifier: Apache-2.0 |
| */ |
| |
| #include <errno.h> |
| |
| #include "soc.h" |
| #include "soc_pinmux.h" |
| #include <device.h> |
| #include <misc/util.h> |
| #include <pinmux/stm32/pinmux_stm32.h> |
| #include <drivers/clock_control/stm32_clock_control.h> |
| |
| static const stm32_pin_func_t pin_pa9_funcs[] = { |
| [STM32L4X_PINMUX_FUNC_PA9_USART1_TX - 1] = |
| STM32L4X_PIN_CONFIG_PUSH_PULL, |
| }; |
| |
| static const stm32_pin_func_t pin_pa10_funcs[] = { |
| [STM32L4X_PINMUX_FUNC_PA10_USART1_RX - 1] = |
| STM32L4X_PIN_CONFIG_BIAS_HIGH_IMPEDANCE, |
| }; |
| |
| static const stm32_pin_func_t pin_pa2_funcs[] = { |
| [STM32L4X_PINMUX_FUNC_PA2_USART2_TX - 1] = |
| STM32L4X_PIN_CONFIG_PUSH_PULL, |
| }; |
| |
| static const stm32_pin_func_t pin_pa3_funcs[] = { |
| [STM32L4X_PINMUX_FUNC_PA3_USART2_RX - 1] = |
| STM32L4X_PIN_CONFIG_BIAS_HIGH_IMPEDANCE, |
| }; |
| |
| static const stm32_pin_func_t pin_pb6_funcs[] = { |
| [STM32L4X_PINMUX_FUNC_PB6_I2C1_SCL - 1] = |
| STM32L4X_PIN_CONFIG_OPEN_DRAIN_PULL_UP, |
| }; |
| |
| static const stm32_pin_func_t pin_pb7_funcs[] = { |
| [STM32L4X_PINMUX_FUNC_PB7_I2C1_SDA - 1] = |
| STM32L4X_PIN_CONFIG_OPEN_DRAIN_PULL_UP, |
| }; |
| |
| static const stm32_pin_func_t pin_pb10_funcs[] = { |
| [STM32L4X_PINMUX_FUNC_PB10_USART3_TX - 1] = |
| STM32L4X_PIN_CONFIG_PUSH_PULL, |
| }; |
| |
| static const stm32_pin_func_t pin_pb11_funcs[] = { |
| [STM32L4X_PINMUX_FUNC_PB11_USART3_RX - 1] = |
| STM32L4X_PIN_CONFIG_BIAS_HIGH_IMPEDANCE, |
| }; |
| |
| static const stm32_pin_func_t pin_pa0_funcs[] = { |
| [STM32L4X_PINMUX_FUNC_PA0_PWM2_CH1 - 1] = |
| STM32L4X_PIN_CONFIG_PUSH_PULL, |
| }; |
| |
| /** |
| * @brief pin configuration |
| */ |
| static const struct stm32_pinmux_conf pins[] = { |
| STM32_PIN_CONF(STM32_PIN_PA0, pin_pa0_funcs), |
| STM32_PIN_CONF(STM32_PIN_PA2, pin_pa2_funcs), |
| STM32_PIN_CONF(STM32_PIN_PA3, pin_pa3_funcs), |
| STM32_PIN_CONF(STM32_PIN_PA9, pin_pa9_funcs), |
| STM32_PIN_CONF(STM32_PIN_PA10, pin_pa10_funcs), |
| STM32_PIN_CONF(STM32_PIN_PB6, pin_pb6_funcs), |
| STM32_PIN_CONF(STM32_PIN_PB7, pin_pb7_funcs), |
| STM32_PIN_CONF(STM32_PIN_PB10, pin_pb10_funcs), |
| STM32_PIN_CONF(STM32_PIN_PB11, pin_pb11_funcs), |
| }; |
| |
| int stm32_get_pin_config(int pin, int func) |
| { |
| /* GPIO function is always available, to save space it is not |
| * listed in alternate functions array |
| */ |
| if (func == STM32_PINMUX_FUNC_GPIO) { |
| return STM32L4X_PIN_CONFIG_BIAS_HIGH_IMPEDANCE; |
| } |
| |
| /* analog function is another 'known' setting */ |
| if (func == STM32_PINMUX_FUNC_ANALOG) { |
| return STM32L4X_PIN_CONFIG_ANALOG; |
| } |
| |
| for (int i = 0; i < ARRAY_SIZE(pins); i++) { |
| if (pins[i].pin == pin) { |
| if ((func - 1) >= pins[i].nfuncs) { |
| return -EINVAL; |
| } |
| |
| return pins[i].funcs[func - 1]; |
| } |
| } |
| return -EINVAL; |
| } |