• Geert Uytterhoeven's avatar
    spi: Generalize SPI "master" to "controller" · 8caab75f
    Geert Uytterhoeven authored
    Now struct spi_master is used for both SPI master and slave controllers,
    it makes sense to rename it to struct spi_controller, and replace
    "master" by "controller" where appropriate.
    
    For now this conversion is done for SPI core infrastructure only.
    Wrappers are provided for backwards compatibility, until all SPI drivers
    have been converted.
    
    Noteworthy details:
      - SPI_MASTER_GPIO_SS is retained, as it only makes sense for SPI
        master controllers,
      - spi_busnum_to_master() is retained, as it looks up masters only,
      - A new field spi_device.controller is added, but spi_device.master is
        retained for compatibility (both are always initialized by
        spi_alloc_device()),
      - spi_flash_read() is used by SPI masters only.
    Signed-off-by: default avatarGeert Uytterhoeven <geert+renesas@glider.be>
    Signed-off-by: default avatarMark Brown <broonie@kernel.org>
    8caab75f
spi.h 3.27 KB