viafb: add a driver for GPIO lines

This is a simple gpiolib driver giving access to the GPIO lines in the
VIA framebuffer system.  A simple mechanism exists for switching lines
between GPIO and I2C, but it's only compile-time for now.

Cc: ScottFang@viatech.com.cn
Cc: JosephChan@via.com.tw
Cc: Harald Welte <laforge@gnumonks.org>
Acked-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/video/Kconfig b/drivers/video/Kconfig
index 6e16244f3ed1..22c1662de964 100644
--- a/drivers/video/Kconfig
+++ b/drivers/video/Kconfig
@@ -1511,6 +1511,7 @@ config FB_VIA
        select FB_CFB_IMAGEBLIT
        select I2C_ALGOBIT
        select I2C
+       select GPIOLIB
        help
           This is the frame buffer device driver for Graphics chips of VIA
           UniChrome (Pro) Family (CLE266,PM800/CN400,P4M800CE/P4M800Pro/
@@ -1520,6 +1521,7 @@ config FB_VIA
 
           To compile this driver as a module, choose M here: the
           module will be called viafb.
+
 config FB_NEOMAGIC
         tristate "NeoMagic display support"
         depends on FB && PCI