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video: ARM CLCD: backlight support for OF

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If the device is probed from device tree, we can support
backlight. This is used with some systems such as the
ST Microelectronics Nomadik.

We have to add HAS_IOMEM to the dependencies of CLCD since
the backlight class device will now be selected, and if it
gets selected on an arch that does not have IOMEM,
compilation will fail.

Cc: Pawel Moll <pawel.moll@arm.com>
Cc: Rob Herring <robh@kernel.org>
Cc: Russell King <linux@arm.linux.org.uk>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
This commit is contained in:
Linus Walleij 2016-06-16 11:36:13 +02:00 • committed by Tomi Valkeinen
parent 1d1e56f414
commit c38162be30
3 changed files with 46 additions and 1 deletions
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3
include/linux/amba/clcd.h
View file

@ -93,6 +93,8 @@ enum {
CLCD_CAP_ALL = CLCD_CAP_BGR | CLCD_CAP_RGB,
};
struct backlight_device;
struct clcd_panel {
struct fb_videomode mode;
signed short width; /* width in mm */
@ -105,6 +107,7 @@ struct clcd_panel {
fixedtimings:1,
grayscale:1;
unsigned int connector;
struct backlight_device *backlight;
};
struct clcd_regs {