gecko-pinctrl.h

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/*
 * Copyright (c) 2022 Silicon Labs
 * SPDX-License-Identifier: Apache-2.0
 */
 
#ifndef ZEPHYR_INCLUDE_DT_BINDINGS_PINCTRL_GECKO_PINCTRL_H_
#define ZEPHYR_INCLUDE_DT_BINDINGS_PINCTRL_GECKO_PINCTRL_H_
 
/*
 * The whole GECKO_pin configuration information is encoded in a 32-bit bitfield
 * organized as follows:
 *
 * - 31..24: Pin function.
 * - 23..16: Reserved.
 * - 15..8:  Port for UART_RX/UART_TX functions.
 * - 7..0:   Pin number for UART_RX/UART_TX functions.
 * - 15..8:  Reserved for UART_LOC function.
 * - 7..0:   Loc for UART_LOC function.
 */
 
#define GECKO_FUN_POS 24U
#define GECKO_FUN_MSK 0xFFU
 
#define GECKO_PIN_POS 0U
#define GECKO_PIN_MSK 0xFFU
 
#define GECKO_PORT_POS 8U
#define GECKO_PORT_MSK 0xFFU
 
#define GECKO_LOC_POS 0U
#define GECKO_LOC_MSK 0xFFU
 
#define GECKO_FUN_UART_TX  0U
#define GECKO_FUN_UART_RX  1U
#define GECKO_FUN_UART_RTS 2U
#define GECKO_FUN_UART_CTS 3U
#define GECKO_FUN_UART_LOC 4U
 
#define GECKO_FUN_SPI_MISO 5U
#define GECKO_FUN_SPI_MOSI 6U
#define GECKO_FUN_SPI_CSN  7U
#define GECKO_FUN_SPI_SCK  8U
 
#define GECKO_FUN_I2C_SDA 9U
#define GECKO_FUN_I2C_SCL 10U
#define GECKO_FUN_I2C_SDA_LOC 11U
#define GECKO_FUN_I2C_SCL_LOC 12U
 
#define GECKO_PSEL(fun, port, pin)                                                                 \
        (((GECKO_PORT_##port & GECKO_PORT_MSK) << GECKO_PORT_POS) |                                \
         ((GECKO_PIN(##pin##) & GECKO_PIN_MSK) << GECKO_PIN_POS) |                                 \
         ((GECKO_FUN_##fun & GECKO_FUN_MSK) << GECKO_FUN_POS))
 
#define GECKO_LOC(fun, loc)                                                                        \
        (((GECKO_LOCATION(##loc##) & GECKO_LOC_MSK) << GECKO_LOC_POS) |                            \
         ((GECKO_FUN_##fun##_LOC & GECKO_FUN_MSK) << GECKO_FUN_POS))
 
#endif /* ZEPHYR_INCLUDE_DT_BINDINGS_PINCTRL_GECKO_PINCTRL_H_ */