Commit 6773f334 authored by Teresa Zepeda Ventura's avatar Teresa Zepeda Ventura Committed by Henrik Brix Andersen
Browse files

drivers: spi: gecko: add new driver for SPI communication via EUSART 



Added a new driver to support SPI communication via EUSART. Since the
Silabs EFR32MG24 family SoCs have only one USART, EUSART support is
necessary for implementing SPI functionality.

Signed-off-by: default avatarTeresa Zepeda Ventura <teresa.zvent@gmail.com>
parent 33594595

drivers/pinctrl/pinctrl_gecko.c

+53 −2
Original line number Diff line number Diff line
@@ -24,6 +24,11 @@ int pinctrl_configure_pins(const pinctrl_soc_pin_t *pins, uint8_t pin_cnt, uintp 
	(void)base;

#endif /*USART_COUNT > 1*/



#ifdef CONFIG_SPI_GECKO_EUSART

	EUSART_TypeDef *ebase = (EUSART_TypeDef *)reg;

	int eusart_num = EUSART_NUM(ebase);

#endif



#endif



#ifdef CONFIG_I2C_GECKO
@@ -171,7 +176,53 @@ int pinctrl_configure_pins(const pinctrl_soc_pin_t *pins, uint8_t pin_cnt, uintp 
#endif /* CONFIG_SOC_FAMILY_SILABS_S1 */

#endif /* CONFIG_UART_GECKO */



#ifdef CONFIG_SPI_GECKO

#ifdef CONFIG_SPI_GECKO_EUSART

		case GECKO_FUN_SPI_SCK:

			pin_config.mode = gpioModePushPull;

			pin_config.out = 1;

			GPIO->EUSARTROUTE[eusart_num].SCLKROUTE =

				(pin_config.port << _GPIO_EUSART_SCLKROUTE_PORT_SHIFT) |

				(pin_config.pin << _GPIO_EUSART_SCLKROUTE_PIN_SHIFT);

			GPIO->EUSARTROUTE[eusart_num].ROUTEEN |= GPIO_EUSART_ROUTEEN_SCLKPEN;

			GPIO_PinModeSet(pin_config.port, pin_config.pin, pin_config.mode,

					pin_config.out);

			break;



		case GECKO_FUN_SPI_CSN:

			pin_config.mode = gpioModePushPull;

			pin_config.out = 1;

			GPIO->EUSARTROUTE[eusart_num].CSROUTE =

				(pin_config.port << _GPIO_EUSART_CSROUTE_PORT_SHIFT) |

				(pin_config.pin << _GPIO_EUSART_CSROUTE_PIN_SHIFT);

			GPIO->EUSARTROUTE[eusart_num].ROUTEEN |= GPIO_EUSART_ROUTEEN_CSPEN;

			GPIO_PinModeSet(pin_config.port, pin_config.pin, pin_config.mode,

					pin_config.out);

			break;



		case GECKO_FUN_SPI_MOSI:

			pin_config.mode = gpioModePushPull;

			pin_config.out = 1;

			GPIO->EUSARTROUTE[eusart_num].TXROUTE =

				(pin_config.port << _GPIO_EUSART_TXROUTE_PORT_SHIFT) |

				(pin_config.pin << _GPIO_EUSART_TXROUTE_PIN_SHIFT);

			GPIO->EUSARTROUTE[eusart_num].ROUTEEN |= GPIO_EUSART_ROUTEEN_TXPEN;

			GPIO_PinModeSet(pin_config.port, pin_config.pin, pin_config.mode,

					pin_config.out);

			break;



		case GECKO_FUN_SPI_MISO:

			pin_config.mode = gpioModeInput;

			pin_config.out = 1;

			GPIO->EUSARTROUTE[eusart_num].RXROUTE =

				(pin_config.port << _GPIO_EUSART_RXROUTE_PORT_SHIFT) |

				(pin_config.pin << _GPIO_EUSART_RXROUTE_PIN_SHIFT);

			GPIO->EUSARTROUTE[EUSART_NUM(EUSART1)].ROUTEEN |= GPIO_EUSART_ROUTEEN_RXPEN;

			GPIO_PinModeSet(pin_config.port, pin_config.pin, pin_config.mode,

					pin_config.out);

			break;

#endif /*CONFIG_SPI_GECKO_EUSART*/



#ifdef CONFIG_SPI_GECKO_USART

#ifdef CONFIG_SOC_FAMILY_SILABS_S1

		case GECKO_FUN_SPIM_SCK:

			pin_config.mode = gpioModePushPull;
@@ -287,7 +338,7 @@ int pinctrl_configure_pins(const pinctrl_soc_pin_t *pins, uint8_t pin_cnt, uintp 
					pin_config.out);

			break;

#endif /* CONFIG_SOC_FAMILY_SILABS_S1 */

#endif /* CONFIG_SPI_GECKO */

#endif /* CONFIG_SPI_GECKO_USART */



#ifdef CONFIG_I2C_GECKO

		case GECKO_FUN_I2C_SDA:

drivers/spi/CMakeLists.txt

+2 −1
Original line number Diff line number Diff line
@@ -28,7 +28,8 @@ zephyr_library_sources_ifdef(CONFIG_SPI_LITEX spi_litex.c) 
zephyr_library_sources_ifdef(CONFIG_SPI_LITEX_LITESPI	spi_litex_litespi.c)

zephyr_library_sources_ifdef(CONFIG_SPI_OC_SIMPLE	spi_oc_simple.c)

zephyr_library_sources_ifdef(CONFIG_SPI_XEC_QMSPI	spi_xec_qmspi.c)

zephyr_library_sources_ifdef(CONFIG_SPI_GECKO		spi_gecko.c)

zephyr_library_sources_ifdef(CONFIG_SPI_GECKO_USART		spi_gecko_usart.c)

zephyr_library_sources_ifdef(CONFIG_SPI_GECKO_EUSART	spi_gecko_eusart.c)

zephyr_library_sources_ifdef(CONFIG_SPI_XLNX_AXI_QUADSPI spi_xlnx_axi_quadspi.c)

zephyr_library_sources_ifdef(CONFIG_ESP32_SPIM		spi_esp32_spim.c)

zephyr_library_sources_ifdef(CONFIG_SPI_TEST		spi_test.c)

drivers/spi/Kconfig

+3 −1
Original line number Diff line number Diff line
@@ -111,7 +111,9 @@ source "drivers/spi/Kconfig.oc_simple" 


source "drivers/spi/Kconfig.xec_qmspi"



source "drivers/spi/Kconfig.gecko"

source "drivers/spi/Kconfig.gecko_usart"



source "drivers/spi/Kconfig.gecko_eusart"



source "drivers/spi/Kconfig.xlnx"

drivers/spi/Kconfig.gecko_eusart

0 → 100644
+13 −0
Original line number Diff line number Diff line 
# Gecko SPI configuration option



# Copyright (c) 2024 Daikin Comfort Technologies North America, Inc.

# SPDX-License-Identifier: Apache-2.0



config SPI_GECKO_EUSART

	bool "Gecko EUSART SPI controller driver"

	default y

	depends on DT_HAS_SILABS_GECKO_SPI_EUSART_ENABLED

	depends on GPIO

	select SOC_GECKO_EUSART

	help

	  Enable the EUSART SPI peripherals on Gecko

drivers/spi/Kconfig.gecko→drivers/spi/Kconfig.gecko_usart

+1 −1
Original line number Diff line number Diff line
@@ -3,7 +3,7 @@ 
# Copyright (c) 2019 Christian Taedcke <hacking@taedcke.com>

# SPDX-License-Identifier: Apache-2.0



config SPI_GECKO

config SPI_GECKO_USART

	bool "Gecko SPI controller driver"

	default y

	depends on DT_HAS_SILABS_GECKO_SPI_USART_ENABLED

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