davinci: DA830/OMAP-L137 EVM: use runtime detection for UI card

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This patch supports runtime detection of DA830 UI card and
eliminates the need for DA830_UI config option. Successful
probe of GPIO expander present on the UI card is used to
detect its presence. For this reason, GPIO_PCF857X is auto-
selected when DA830 EVM is configured. In case the UI card
is absent, the probe fails in reasonable time.

As a side effect this patch also gets rid of the voilation
of Documentation/SubmittingPatches section 2.2 in function
da830_evm_ui_expander_setup()

Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>

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Sekhar Nori 2009-10-21 21:18:20 +05:30 • committed by Kevin Hilman

parent a0433ac30c

commit 77316f0575

2 changed files with 67 additions and 70 deletions

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17

arch/arm/mach-davinci/Kconfig

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120

arch/arm/mach-davinci/board-da830-evm.c

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