1 /* 2 * Copyright (c) 2022 Espressif Systems (Shanghai) Co., Ltd. 3 * 4 * SPDX-License-Identifier: Apache-2.0 5 */ 6 7 #ifndef ZEPHYR_INCLUDE_DT_BINDINGS_PINCTRL_ESP_PINCTRL_COMMON_H_ 8 #define ZEPHYR_INCLUDE_DT_BINDINGS_PINCTRL_ESP_PINCTRL_COMMON_H_ 9 10 #include <zephyr/dt-bindings/dt-util.h> 11 12 #define ESP32_PIN_NUM_SHIFT 0U 13 #define ESP32_PIN_NUM_MASK 0x3FU 14 15 /* 16 * Definitions used to extract I/O 17 * signal indexes used by the GPIO 18 * matrix signal routing mechanism 19 */ 20 #define ESP32_PIN_SIGI_MASK 0x1FFU 21 #define ESP32_PIN_SIGI_SHIFT 6U 22 #define ESP32_PIN_SIGO_MASK 0x1FFU 23 #define ESP32_PIN_SIGO_SHIFT 15U 24 #define ESP_SIG_INVAL ESP32_PIN_SIGI_MASK 25 26 #define ESP32_PINMUX(pin, sig_i, sig_o) \ 27 (((pin & ESP32_PIN_NUM_MASK) << ESP32_PIN_NUM_SHIFT) | \ 28 ((sig_i & ESP32_PIN_SIGI_MASK) << ESP32_PIN_SIGI_SHIFT) | \ 29 ((sig_o & ESP32_PIN_SIGO_MASK) << ESP32_PIN_SIGO_SHIFT)) 30 31 /* 32 * Definitions used to extract pin 33 * properties: bias, drive and 34 * initial pin level 35 */ 36 #define ESP32_PIN_BIAS_SHIFT 0U 37 #define ESP32_PIN_BIAS_MASK 0x3U 38 #define ESP32_PIN_DRV_SHIFT 2U 39 #define ESP32_PIN_DRV_MASK 0x3U 40 #define ESP32_PIN_OUT_SHIFT 4U 41 #define ESP32_PIN_OUT_MASK 0x3U 42 #define ESP32_PIN_EN_DIR_SHIFT 6U 43 #define ESP32_PIN_EN_DIR_MASK 0x3U 44 45 /* Bias definitions */ 46 #define ESP32_NO_PULL 0x1 47 #define ESP32_PULL_UP 0x2 48 #define ESP32_PULL_DOWN 0x3 49 50 /* Pin drive definitions */ 51 #define ESP32_PUSH_PULL 0x1 52 #define ESP32_OPEN_DRAIN 0x2 53 54 /* 55 * An output pin can be initialized 56 * to either high or low 57 */ 58 #define ESP32_PIN_OUT_HIGH 0x1 59 #define ESP32_PIN_OUT_LOW 0x2 60 61 /* 62 * Enable input or output on pin 63 * regardless of its direction 64 */ 65 #define ESP32_PIN_OUT_EN 0x1 66 #define ESP32_PIN_IN_EN 0x2 67 68 /* 69 * These flags are used by the pinctrl 70 * driver, based on the DTS properties 71 * assigned to a specific pin state 72 */ 73 #define ESP32_NO_PULL_FLAG BIT(0) 74 #define ESP32_PULL_UP_FLAG BIT(1) 75 #define ESP32_PULL_DOWN_FLAG BIT(2) 76 #define ESP32_PUSH_PULL_FLAG BIT(3) 77 #define ESP32_OPEN_DRAIN_FLAG BIT(4) 78 #define ESP32_DIR_INP_FLAG BIT(5) 79 #define ESP32_DIR_OUT_FLAG BIT(6) 80 #define ESP32_PIN_OUT_HIGH_FLAG BIT(7) 81 #define ESP32_PIN_OUT_LOW_FLAG BIT(8) 82 #define ESP32_PIN_OUT_EN_FLAG BIT(9) 83 #define ESP32_PIN_IN_EN_FLAG BIT(10) 84 85 #endif /* ZEPHYR_INCLUDE_DT_BINDINGS_PINCTRL_ESP_PINCTRL_COMMON_H_ */ 86
