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[08/62] ARM: davinci: use explicit 'select' for DA850_EVM

Message ID 1395257399-359545-9-git-send-email-arnd@arndb.de (mailing list archive)
State New, archived
Headers show

Commit Message

Arnd Bergmann March 19, 2014, 7:29 p.m. UTC
The DAVINCI_DA850_EVM board uses an unusual method to
enable the GPIO_PCA953X and KEYBOARD_GPIO_POLLED symbols,
which leads to the dependencies on these symbols being
ignored. As GPIO_PCA953X actually requires I2C, that
can lead to build failures when I2C is disabled.

This patch removes the duplicate symbol definitions
and instead adds equivalent 'select' statements that
are conditional on the underlying dependencies.

A different question whether we actually want to automatically
enable them at all or rather put them into defconfig,
but that should be a separate patch.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Sekhar Nori <nsekhar@ti.com>
Cc: Kevin Hilman <khilman@deeprootsystems.com>
Cc: davinci-linux-open-source@linux.davincidsp.com
---
 arch/arm/mach-davinci/Kconfig | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

Comments

Sekhar Nori March 20, 2014, 12:47 p.m. UTC | #1
On Thursday 20 March 2014 12:59 AM, Arnd Bergmann wrote:
> The DAVINCI_DA850_EVM board uses an unusual method to
> enable the GPIO_PCA953X and KEYBOARD_GPIO_POLLED symbols,
> which leads to the dependencies on these symbols being
> ignored. As GPIO_PCA953X actually requires I2C, that
> can lead to build failures when I2C is disabled.
> 
> This patch removes the duplicate symbol definitions

I am okay with this..

> and instead adds equivalent 'select' statements that
> are conditional on the underlying dependencies.

.. but not sure this is needed. The PCA953X was defaulted to y mainly
because the IO expander was used to detect presence of daughter cards.
Even then, I don't think there is any need to force its selection.

> 
> A different question whether we actually want to automatically
> enable them at all or rather put them into defconfig,
> but that should be a separate patch.

It can be enabled through defconfig as you said. I agree that can be a
separate patch. For now, just dropping the replicated Kconfig symbols
should be okay.

Thanks,
Sekhar
diff mbox

Patch

diff --git a/arch/arm/mach-davinci/Kconfig b/arch/arm/mach-davinci/Kconfig
index 3b98e34..df794e9 100644
--- a/arch/arm/mach-davinci/Kconfig
+++ b/arch/arm/mach-davinci/Kconfig
@@ -163,6 +163,8 @@  config MACH_DAVINCI_DA850_EVM
 	bool "TI DA850/OMAP-L138/AM18x Reference Platform"
 	default ARCH_DAVINCI_DA850
 	depends on ARCH_DAVINCI_DA850
+	select GPIO_PCA953X if I2C
+	select KEYBOARD_GPIO_POLLED if GPIOLIB
 	help
 	  Say Y here to select the TI DA850/OMAP-L138/AM18x Evaluation Module.
 
@@ -209,11 +211,6 @@  config DA850_WL12XX
 	  Say Y if you want to use a wl1271 expansion card connected to the
 	  AM18x EVM.
 
-config GPIO_PCA953X
-	default MACH_DAVINCI_DA850_EVM
-
-config KEYBOARD_GPIO_POLLED
-	default MACH_DAVINCI_DA850_EVM
 
 config MACH_MITYOMAPL138
 	bool "Critical Link MityDSP-L138/MityARM-1808 SoM"