greybus: spi: add inprogress bit to xfer_flags

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When a SPI transfer needs to be split by more than one greybus spi
transfer operation, we need to indicate it so the controller can handle
the chip select lines correctly.

Add a new bit to indicate it, GB_SPI_XFER_INPROGRESS, and create an
helper function to calculate when the transfer is done. As we need this
information also in other places.

Signed-off-by: Rui Miguel Silva <rui.silva@linaro.org>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>

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This commit is contained in:

Rui Miguel Silva 2016-05-16 10:33:21 +01:00 • committed by Greg Kroah-Hartman

parent 22e26a3a13

commit 3a238fc784

2 changed files with 15 additions and 2 deletions

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1

drivers/staging/greybus/greybus_protocols.h

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16

drivers/staging/greybus/spilib.c

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