• Santosh Shilimkar's avatar
    of: configure the platform device dma parameters · 591c1ee4
    Santosh Shilimkar authored
    Retrieve DMA configuration from DT and setup platform device's DMA
    parameters. The DMA configuration in DT has to be specified using
    "dma-ranges" and "dma-coherent" properties if supported.
    We setup dma_pfn_offset using "dma-ranges" and dma_coherent_ops
    using "dma-coherent" device tree properties.
    The set_arch_dma_coherent_ops macro has to be defined by arch if
    it supports coherent dma_ops. Otherwise, set_arch_dma_coherent_ops() is
    declared as nop.
    Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
    Cc: Russell King <linux@arm.linux.org.uk>
    Cc: Arnd Bergmann <arnd@arndb.de>
    Cc: Olof Johansson <olof@lixom.net>
    Cc: Grant Likely <grant.likely@linaro.org>
    Cc: Catalin Marinas <catalin.marinas@arm.com>
    Cc: Linus Walleij <linus.walleij@linaro.org>
    Reviewed-by: default avatarRob Herring <robh@kernel.org>
    Signed-off-by: default avatarGrygorii Strashko <grygorii.strashko@ti.com>
    Signed-off-by: default avatarSantosh Shilimkar <santosh.shilimkar@ti.com>
dma-mapping.h 7.94 KB