spi: rspi: Merge rspi_*_dma() into rspi_dma_transfer()

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rspi_send_dma() and rspi_send_receive_dma() are very similar. Consolidate
into a single function rspi_dma_transfer(), and add missing checks for
dmaengine_submit() failures.

Both sg_table pointer parameters can be NULL, as RSPI supports TX-only
mode, and unidirectional DMA transfers will also be needed later for
Dual/Quad DMA support.

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 15:38:15 +02:00 • committed by Mark Brown

parent e4b52dc462

commit c52fb6d634

1 changed files with 61 additions and 78 deletions

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139

drivers/spi/spi-rspi.c

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