[PATCH] Rewritten backlight infrastructure for portable Apple computers
This patch contains a total rewrite of the backlight infrastructure for
portable Apple computers. Backward compatibility is retained. A sysfs
interface allows userland to control the brightness with more steps than
before. Userland is allowed to upload a brightness curve for different
monitors, similar to Mac OS X.
[akpm@osdl.org: add needed exports]
Signed-off-by: Michael Hanselmann <linux-kernel@hansmi.ch>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: "Antonino A. Daplas" <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/drivers/video/Kconfig b/drivers/video/Kconfig
index 5a2840a..168ede7 100644
--- a/drivers/video/Kconfig
+++ b/drivers/video/Kconfig
@@ -86,6 +86,11 @@
combination with certain motherboards and monitors are known to
suffer from this problem.
+config FB_BACKLIGHT
+ bool
+ depends on FB
+ default n
+
config FB_MODE_HELPERS
bool "Enable Video Mode Handling Helpers"
depends on FB
@@ -717,6 +722,16 @@
independently validate video mode parameters, you should say Y
here.
+config FB_NVIDIA_BACKLIGHT
+ bool "Support for backlight control"
+ depends on FB_NVIDIA && PPC_PMAC
+ select FB_BACKLIGHT
+ select BACKLIGHT_LCD_SUPPORT
+ select BACKLIGHT_CLASS_DEVICE
+ default y
+ help
+ Say Y here if you want to control the backlight of your display.
+
config FB_RIVA
tristate "nVidia Riva support"
depends on FB && PCI
@@ -755,6 +770,16 @@
of debugging informations to provide to the maintainer when
something goes wrong.
+config FB_RIVA_BACKLIGHT
+ bool "Support for backlight control"
+ depends on FB_RIVA && PPC_PMAC
+ select FB_BACKLIGHT
+ select BACKLIGHT_LCD_SUPPORT
+ select BACKLIGHT_CLASS_DEVICE
+ default y
+ help
+ Say Y here if you want to control the backlight of your display.
+
config FB_I810
tristate "Intel 810/815 support (EXPERIMENTAL)"
depends on FB && EXPERIMENTAL && PCI && X86_32
@@ -993,6 +1018,7 @@
There is a product page at
http://apps.ati.com/ATIcompare/
+
config FB_RADEON_I2C
bool "DDC/I2C for ATI Radeon support"
depends on FB_RADEON
@@ -1000,6 +1026,16 @@
help
Say Y here if you want DDC/I2C support for your Radeon board.
+config FB_RADEON_BACKLIGHT
+ bool "Support for backlight control"
+ depends on FB_RADEON && PPC_PMAC
+ select FB_BACKLIGHT
+ select BACKLIGHT_LCD_SUPPORT
+ select BACKLIGHT_CLASS_DEVICE
+ default y
+ help
+ Say Y here if you want to control the backlight of your display.
+
config FB_RADEON_DEBUG
bool "Lots of debug output from Radeon driver"
depends on FB_RADEON
@@ -1024,6 +1060,16 @@
To compile this driver as a module, choose M here: the
module will be called aty128fb.
+config FB_ATY128_BACKLIGHT
+ bool "Support for backlight control"
+ depends on FB_ATY128 && PPC_PMAC
+ select FB_BACKLIGHT
+ select BACKLIGHT_LCD_SUPPORT
+ select BACKLIGHT_CLASS_DEVICE
+ default y
+ help
+ Say Y here if you want to control the backlight of your display.
+
config FB_ATY
tristate "ATI Mach64 display support" if PCI || ATARI
depends on FB && !SPARC32
@@ -1066,6 +1112,16 @@
is at
<http://support.ati.com/products/pc/mach64/graphics_xpression.html>.
+config FB_ATY_BACKLIGHT
+ bool "Support for backlight control"
+ depends on FB_ATY && PPC_PMAC
+ select FB_BACKLIGHT
+ select BACKLIGHT_LCD_SUPPORT
+ select BACKLIGHT_CLASS_DEVICE
+ default y
+ help
+ Say Y here if you want to control the backlight of your display.
+
config FB_S3TRIO
bool "S3 Trio display support"
depends on (FB = y) && PPC && BROKEN