| /* |
| * Copyright (c) 2021 Yonatan Schachter |
| * |
| * SPDX-License-Identifier: Apache-2.0 |
| */ |
| |
| #ifndef ZEPHYR_SOC_ARM_RPI_PICO_RP2_PINCTRL_SOC_H_ |
| #define ZEPHYR_SOC_ARM_RPI_PICO_RP2_PINCTRL_SOC_H_ |
| |
| #include <zephyr/dt-bindings/pinctrl/rpi-pico-rp2040-pinctrl.h> |
| |
| /** |
| * @brief Type to hold a pin's pinctrl configuration. |
| */ |
| struct rpi_pinctrl_soc_pin { |
| /** Pin number 0..29 */ |
| uint32_t pin_num : 5; |
| /** Alternative function (UART, SPI, etc.) */ |
| uint32_t alt_func : 4; |
| /** Maximum current used by a pin, in mA */ |
| uint32_t drive_strength : 4; |
| /** Slew rate, may be either false (slow) or true (fast) */ |
| uint32_t slew_rate : 1; |
| /** Enable the internal pull up resistor */ |
| uint32_t pullup : 1; |
| /** Enable the internal pull down resistor */ |
| uint32_t pulldown : 1; |
| /** Enable the pin as an input */ |
| uint32_t input_enable : 1; |
| /** Enable the internal schmitt trigger */ |
| uint32_t schmitt_enable : 1; |
| }; |
| |
| typedef struct rpi_pinctrl_soc_pin pinctrl_soc_pin_t; |
| |
| /** |
| * @brief Utility macro to initialize each pin. |
| * |
| * @param node_id Node identifier. |
| * @param prop Property name. |
| * @param idx Property entry index. |
| */ |
| #define Z_PINCTRL_STATE_PIN_INIT(node_id, prop, idx) \ |
| { \ |
| RP2_GET_PIN_NUM(DT_PROP_BY_IDX(node_id, prop, idx)), \ |
| RP2_GET_PIN_ALT_FUNC(DT_PROP_BY_IDX(node_id, prop, idx)), \ |
| DT_ENUM_IDX(node_id, drive_strength), \ |
| DT_ENUM_IDX(node_id, slew_rate), \ |
| DT_PROP(node_id, bias_pull_up), \ |
| DT_PROP(node_id, bias_pull_down), \ |
| DT_PROP(node_id, input_enable), \ |
| DT_PROP(node_id, input_schmitt_enable), \ |
| }, |
| |
| /** |
| * @brief Utility macro to initialize state pins contained in a given property. |
| * |
| * @param node_id Node identifier. |
| * @param prop Property name describing state pins. |
| */ |
| #define Z_PINCTRL_STATE_PINS_INIT(node_id, prop) \ |
| {DT_FOREACH_CHILD_VARGS(DT_PHANDLE(node_id, prop), \ |
| DT_FOREACH_PROP_ELEM, pinmux, \ |
| Z_PINCTRL_STATE_PIN_INIT)} |
| |
| #define RP2_GET_PIN_NUM(pinctrl) \ |
| (((pinctrl) >> RP2_PIN_NUM_POS) & RP2_PIN_NUM_MASK) |
| #define RP2_GET_PIN_ALT_FUNC(pinctrl) \ |
| (((pinctrl) >> RP2_ALT_FUNC_POS) & RP2_ALT_FUNC_MASK) |
| |
| #endif /* ZEPHYR_SOC_ARM_RPI_PICO_RP2_PINCTRL_SOC_H_ */ |