spi: rspi: Extract rspi_pio_transfer()

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The various PIO loops are very similar. Consolidate into a single
function rspi_pio_transfer().

Both buffer pointers can be NULL, as RSPI supports TX-only mode, and
Dual/Quad SPI Transfers are unidirectional.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Mark Brown <broonie@linaro.org>

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Geert Uytterhoeven 2014-06-02 15:38:07 +02:00 • committed by Mark Brown

parent b42e03596d

commit 6837b8e91d

1 changed files with 33 additions and 62 deletions

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95

drivers/spi/spi-rspi.c

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