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74 lines
2.2 KiB
74 lines
2.2 KiB
/* |
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* Copyright (c) 2021 Yonatan Schachter |
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* |
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* SPDX-License-Identifier: Apache-2.0 |
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*/ |
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#ifndef ZEPHYR_SOC_ARM_RPI_PICO_RP2_PINCTRL_SOC_H_ |
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#define ZEPHYR_SOC_ARM_RPI_PICO_RP2_PINCTRL_SOC_H_ |
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#include <zephyr/dt-bindings/pinctrl/rpi-pico-pinctrl-common.h> |
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/** |
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* @brief Type to hold a pin's pinctrl configuration. |
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*/ |
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struct rpi_pinctrl_soc_pin { |
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/** Pin number 0..29 */ |
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uint32_t pin_num : 5; |
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/** Alternative function (UART, SPI, etc.) */ |
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uint32_t alt_func : 4; |
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/** Maximum current used by a pin, in mA */ |
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uint32_t drive_strength : 4; |
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/** Slew rate, may be either false (slow) or true (fast) */ |
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uint32_t slew_rate : 1; |
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/** Enable the internal pull up resistor */ |
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uint32_t pullup : 1; |
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/** Enable the internal pull down resistor */ |
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uint32_t pulldown : 1; |
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/** Enable the pin as an input */ |
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uint32_t input_enable : 1; |
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/** Enable the internal schmitt trigger */ |
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uint32_t schmitt_enable : 1; |
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/** Output-enable override */ |
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uint32_t oe_override : 2; |
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}; |
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typedef struct rpi_pinctrl_soc_pin pinctrl_soc_pin_t; |
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/** |
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* @brief Utility macro to initialize each pin. |
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* |
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* @param node_id Node identifier. |
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* @param prop Property name. |
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* @param idx Property entry index. |
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*/ |
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#define Z_PINCTRL_STATE_PIN_INIT(node_id, prop, idx) \ |
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{ \ |
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RP2_GET_PIN_NUM(DT_PROP_BY_IDX(node_id, prop, idx)), \ |
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RP2_GET_PIN_ALT_FUNC(DT_PROP_BY_IDX(node_id, prop, idx)), \ |
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DT_ENUM_IDX(node_id, drive_strength), \ |
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DT_ENUM_IDX(node_id, slew_rate), \ |
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DT_PROP(node_id, bias_pull_up), \ |
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DT_PROP(node_id, bias_pull_down), \ |
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DT_PROP(node_id, input_enable), \ |
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DT_PROP(node_id, input_schmitt_enable), \ |
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DT_PROP(node_id, raspberrypi_oe_override), \ |
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}, |
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/** |
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* @brief Utility macro to initialize state pins contained in a given property. |
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* |
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* @param node_id Node identifier. |
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* @param prop Property name describing state pins. |
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*/ |
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#define Z_PINCTRL_STATE_PINS_INIT(node_id, prop) \ |
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{DT_FOREACH_CHILD_VARGS(DT_PHANDLE(node_id, prop), \ |
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DT_FOREACH_PROP_ELEM, pinmux, \ |
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Z_PINCTRL_STATE_PIN_INIT)} |
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#define RP2_GET_PIN_NUM(pinctrl) \ |
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(((pinctrl) >> RP2_PIN_NUM_POS) & RP2_PIN_NUM_MASK) |
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#define RP2_GET_PIN_ALT_FUNC(pinctrl) \ |
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(((pinctrl) >> RP2_ALT_FUNC_POS) & RP2_ALT_FUNC_MASK) |
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#endif /* ZEPHYR_SOC_ARM_RPI_PICO_RP2_PINCTRL_SOC_H_ */
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