tree 21eadda04ccd221f910953968439d31ac0acc3a0
parent 675e7c9d71cedee3988b554c47971be77e72d2db
author Serge Semin <Sergey.Semin@baikalelectronics.ru> 1600601333 +0300
committer Mark Brown <broonie@kernel.org> 1601396546 +0100
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spi: dw: Convert CS-override to DW SPI capabilities

There are several vendor-specific versions of the DW SPI controllers,
each of which may have some peculiarities with respect to the original
IP-core. Seeing it has already caused adding flags and a callback into the
DW SPI private data, let's introduce a generic capabilities interface to
tune the generic DW SPI controller driver up in accordance with the
particular controller specifics. It's done by converting a simple
Alpine-specific CS-override capability into the DW SPI controller
capability activated by setting the DW_SPI_CAP_CS_OVERRIDE flag.

Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru>
Link: https://lore.kernel.org/r/20200920112914.26501-10-Sergey.Semin@baikalelectronics.ru
Signed-off-by: Mark Brown <broonie@kernel.org>