63af3c00e9
Add support for SPI host command backend for STM32 chips family. Unfortunately, the current SPI API can't be used to handle the host commands communication. The main issues are unknown command size sent by the host(the SPI transaction sends/receives specific number of bytes) and need to constant sending status byte(the SPI module is enabled and disabled per transaction). Thus the SPI backend includes basic SPI STM32 driver adjusted to host command specification. Signed-off-by: Dawid Niedzwiecki <dawidn@google.com>
104 lines
3 KiB
Text
104 lines
3 KiB
Text
# Host Command backend configs
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# Copyright (c) 2020 Google LLC
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# SPDX-License-Identifier: Apache-2.0
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DT_CHOSEN_ESPI_BACKEND := zephyr,host-cmd-espi-backend
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DT_CHOSEN_SHI_BACKEND := zephyr,host-cmd-shi-backend
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DT_CHOSEN_UART_BACKEND := zephyr,host-cmd-uart-backend
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DT_CHOSEN_SPI_BACKEND := zephyr,host-cmd-spi-backend
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config EC_HOST_CMD_BACKEND_SIMULATOR
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bool "Embedded Controller Host Command Backend Simulator"
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depends on SOC_POSIX
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help
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Enable the EC host command simulator.
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config EC_HOST_CMD_BACKEND_ESPI
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bool "Host commands support using eSPI bus"
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default $(dt_chosen_enabled,$(DT_CHOSEN_ESPI_BACKEND))
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depends on ESPI_PERIPHERAL_EC_HOST_CMD
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depends on ESPI_PERIPHERAL_CUSTOM_OPCODE
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help
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Enable support for Embedded Controller host commands using
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the eSPI bus.
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config EC_HOST_CMD_BACKEND_SHI
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bool "Host commands support using SHI"
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default $(dt_chosen_enabled,$(DT_CHOSEN_SHI_BACKEND))
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help
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Enable support for Embedded Controller host commands using
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the Serial Host Interface.
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config EC_HOST_CMD_BACKEND_UART
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bool "Host commands support using UART"
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default $(dt_chosen_enabled,$(DT_CHOSEN_UART_BACKEND))
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depends on UART_ASYNC_API
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help
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Enable support for Embedded Controller host commands using
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the UART.
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config EC_HOST_CMD_BACKEND_SPI
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bool "Host commands support using SPI"
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help
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Enable support for Embedded Controller host commands using
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the SPI.
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if EC_HOST_CMD_BACKEND_SHI
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choice EC_HOST_CMD_BACKEND_SHI_DRIVER
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prompt "SHI driver"
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default EC_HOST_CMD_BACKEND_SHI_NPCX if SOC_FAMILY_NPCX
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default EC_HOST_CMD_BACKEND_SHI_ITE if SOC_IT8XXX2
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config EC_HOST_CMD_BACKEND_SHI_NPCX
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bool "SHI by Nuvoton"
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depends on DT_HAS_NUVOTON_NPCX_SHI_ENABLED
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help
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This option enables the driver for SHI backend in the
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Nuvoton NPCX chip.
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config EC_HOST_CMD_BACKEND_SHI_ITE
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bool "SHI by ITE"
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depends on DT_HAS_ITE_IT8XXX2_SHI_ENABLED
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help
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This option enables the driver for SHI backend in the
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ITE IT8xxx2 chips family.
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endchoice
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config EC_HOST_CMD_BACKEND_SHI_MAX_REQUEST
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int "Max data size for the version 3 request packet"
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default 544 if EC_HOST_CMD_BACKEND_SHI_NPCX
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default 256 if EC_HOST_CMD_BACKEND_SHI_ITE
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help
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This option indicates maximum data size for a version 3 request
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packet. This must be big enough to handle the biggest possible
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request.
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config EC_HOST_CMD_BACKEND_SHI_MAX_RESPONSE
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int "Max data size for the version 3 response packet"
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default 544 if EC_HOST_CMD_BACKEND_SHI_NPCX
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default 248 if EC_HOST_CMD_BACKEND_SHI_ITE
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help
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This option indicates maximum data size for a version 3 response
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packet. This must be big enough to handle the biggest possible
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response.
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endif # EC_HOST_CMD_BACKEND_SHI
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if EC_HOST_CMD_BACKEND_SPI
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choice EC_HOST_CMD_BACKEND_SPI_DRIVER
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prompt "SHI driver"
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default EC_HOST_CMD_BACKEND_SPI_STM32 if DT_HAS_ST_STM32_SPI_HOST_CMD_ENABLED
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config EC_HOST_CMD_BACKEND_SPI_STM32
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bool "SPI by STM32"
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help
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This option enables the driver for SPI backend in the
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STM32 chip family.
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endchoice
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endif # EC_HOST_CMD_BACKEND_SPI
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