spi: dw: Add KeemBay Master capability

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In a further commit we'll have to get rid of the update_cr0() callback and
define a DW SSI capability instead. Since Keem Bay master/slave
functionality is controller by the CTRL0 register bitfield, we need to
first move the master mode selection into the internal corresponding
update_cr0 method, which would be activated by means of the dedicated
DW_SPI_CAP_KEEMBAY_MST capability setup.

Note this will be also useful if the driver will be ever altered to
support the DW SPI slave interface.

Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru>
Link: https://lore.kernel.org/r/20200920112914.26501-11-Sergey.Semin@baikalelectronics.ru
Signed-off-by: Mark Brown <broonie@kernel.org>

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Serge Semin 2020-09-20 14:28:54 +03:00 • committed by Mark Brown

parent cc760f3143

commit ffb7ca54c9

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3 changed files with 15 additions and 17 deletions

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4

drivers/spi/spi-dw-core.c

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20

drivers/spi/spi-dw-mmio.c

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8

drivers/spi/spi-dw.h

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