spi: davinci: enable GPIO lines to be used as chip selects

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Sometimes, the chip selects provided by SPI module are
muxed with other functionality and cannot be used in
some designs. In such cases, it becomes convenient to use
an available GPIO line as chip select.

This patch enables the DaVinci SPI driver to treat specific
GPIO lines as chip selects based on information provided in
platform data.

Signed-off-by: Brian Niebuhr <bniebuhr@efjohnson.com>
Tested-By: Michael Williamson <michael.williamson@criticallink.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>

...

This commit is contained in:

Brian Niebuhr 2010-08-13 10:57:44 +05:30 • committed by Sekhar Nori

parent cfbc5d1d8f

commit 23853973d9

2 changed files with 35 additions and 7 deletions

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3

arch/arm/mach-davinci/include/mach/spi.h

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39

drivers/spi/davinci_spi.c

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