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David Brownell a9a84c37d1 atmel_lcdfb: backlight control 
On the sam9 EK boards, the LCD backlight is hooked up to a PWM output from
the LCD controller.  It's controlled by "contrast" registers though.

This patch lets boards declare that they have that kind of backlight
control.  The driver can then export this control, letting screenblank and
other operations actually take effect ...  reducing the typically
substantial power drain from the backlight.

Note that it's not fully cooked
  - doesn't force backlight off during system suspend
  - the "power" and "blank" events may not be done right
This should be easily added in the future.

[nicolas.ferre@atmel.com: remove unneeded inline and rename functions]
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Cc: Andrew Victor <linux@maxim.org.za>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: "Antonino A. Daplas" <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 		2008-02-06 10:41:16 -08:00
..
boot Merge branch 'orion' into devel 2008-01-28 13:21:30 +00:00
common [ARM] xtime_seqlock: fix more ARM machines for xtime deadlocking 2008-02-04 13:14:07 +00:00
configs [ARM] 4806/1: ixp4xx: Ethernet support for the nslu2 and nas100d boards 2008-02-04 13:15:26 +00:00
kernel add mm argument to pte/pmd/pud/pgd_free 2008-02-05 09:44:18 -08:00
lib [ARM] spelling fixes 2007-05-20 20:10:32 +01:00
mach-aaec2000 [ARM] Fix timer damage from d3d74453c3 2008-01-28 10:17:12 +00:00
mach-at91 atmel_lcdfb: backlight control 2008-02-06 10:41:16 -08:00
mach-clps711x [ARM] Fix timer damage from d3d74453c3 2008-01-28 10:17:12 +00:00
mach-clps7500 [ARM] Fix timer damage from d3d74453c3 2008-01-28 10:17:12 +00:00
mach-davinci clockevents: fix resume logic 2007-07-21 17:49:15 -07:00
mach-ebsa110 [ARM] Fix timer damage from d3d74453c3 2008-01-28 10:17:12 +00:00
mach-ep93xx Merge branches 'at91', 'ep93xx', 'iop', 'kprobes', 'ks8695', 'misc', 'msm', 's3c2410', 'sa1100' and 'vfp' into devel 2008-01-28 13:21:21 +00:00
mach-footbridge [ARM] Fix timer damage from d3d74453c3 2008-01-28 10:17:12 +00:00
mach-h720x [ARM] Fix timer damage from d3d74453c3 2008-01-28 10:17:12 +00:00
mach-imx Remove references to "make dep" 2008-01-28 23:22:13 +01:00
mach-integrator Merge branches 'at91', 'ep93xx', 'iop', 'kprobes', 'ks8695', 'misc', 'msm', 's3c2410', 'sa1100' and 'vfp' into devel 2008-01-28 13:21:21 +00:00
mach-iop13xx some kmalloc/memset ->kzalloc (tree wide) 2007-07-19 10:04:50 -07:00
mach-iop32x [ARM] 4770/1: GLAN Tank: correct physmap_flash_data width field 2008-01-26 14:58:55 +00:00
mach-iop33x iop3xx: surface the iop3xx DMA and AAU units to the iop-adma driver 2007-07-13 08:06:19 -07:00
mach-ixp4xx [ARM] 4809/2: ixp4xx: Merge dsmg600-power.c into dsmg600-setup.c 2008-02-04 13:15:27 +00:00
mach-ixp23xx [ARM] remove duplicate includes 2008-01-26 14:50:07 +00:00
mach-ixp2000 [ARM] Fix timer damage from d3d74453c3 2008-01-28 10:17:12 +00:00
mach-ks8695 Merge branches 'at91', 'ep93xx', 'iop', 'kprobes', 'ks8695', 'misc', 'msm', 's3c2410', 'sa1100' and 'vfp' into devel 2008-01-28 13:21:21 +00:00
mach-l7200 [ARM] Remove compatibility layer for ARM irqs 2006-11-30 12:24:47 +00:00
mach-lh7a40x [ARM] Fix timer damage from d3d74453c3 2008-01-28 10:17:12 +00:00
mach-msm [ARM] msm: dma support for MSM7X00A 2008-01-26 14:39:14 +00:00
mach-mx3 [ARM] Fix timer damage from d3d74453c3 2008-01-28 10:17:12 +00:00
mach-netx Remove references to "make dep" 2008-01-28 23:22:13 +01:00
mach-ns9xxx [ARM] 4595/1: ns9xxx: define registers as void __iomem * instead of volatile u32 2007-10-12 23:43:41 +01:00
mach-omap1 Merge branch 'pxa-plat' into devel 2008-01-28 13:21:38 +00:00
mach-omap2 Merge branch 'pxa-plat' into devel 2008-01-28 13:21:38 +00:00
mach-orion [ARM] Orion: implement power-off method for QNAP TS-109/209 2008-01-26 15:04:04 +00:00
mach-pnx4008 [ARM] Fix timer damage from d3d74453c3 2008-01-28 10:17:12 +00:00
mach-pxa gpiolib support for the PXA architecture 2008-02-05 09:44:13 -08:00
mach-realview [ARM] 4822/1: RealView: Change the REALVIEW_MPCORE configuration option 2008-02-04 17:52:28 +00:00
mach-rpc [ARM] rpc: convert an outb() to writeb() 2007-07-20 21:29:39 +01:00
mach-s3c2400 [ARM] 4157/2: S3C24XX: move arch/arch/mach-s3c2410 into cpu components 2007-02-11 17:36:09 +00:00
mach-s3c2410 Merge branches 'at91', 'ep93xx', 'iop', 'kprobes', 'ks8695', 'misc', 'msm', 's3c2410', 'sa1100' and 'vfp' into devel 2008-01-28 13:21:21 +00:00
mach-s3c2412 [ARM] 4791/1: S3C2412: Make fclk a parent of msysclk 2008-01-28 13:20:52 +00:00
mach-s3c2440 [ARM] 4794/1: S3C24XX: Comonise S3C2440 and S3C2442 clock code 2008-01-28 13:20:52 +00:00
mach-s3c2442 [ARM] 4794/1: S3C24XX: Comonise S3C2440 and S3C2442 clock code 2008-01-28 13:20:52 +00:00
mach-s3c2443 Driver core: change sysdev classes to use dynamic kobject names 2008-01-24 20:40:40 -08:00
mach-sa1100 Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm 2008-02-04 15:29:53 -08:00
mach-shark [ARM] Fix timer damage from d3d74453c3 2008-01-28 10:17:12 +00:00
mach-versatile [ARM] 4454/1: Use word accesses in Versatile PCI config reads 2007-07-02 13:39:35 +01:00
mm add mm argument to pte/pmd/pud/pgd_free 2008-02-05 09:44:18 -08:00
nwfpe Convert files to UTF-8 and some cleanups 2007-10-19 23:21:04 +02:00
oprofile Driver core: change sysdev classes to use dynamic kobject names 2008-01-24 20:40:40 -08:00
plat-iop [ARM] xtime_seqlock: fix more ARM machines for xtime deadlocking 2008-02-04 13:14:07 +00:00
plat-mxc [ARM] 4461/1: MXC platform and i.MX31ADS core support 2007-07-22 15:44:46 +01:00
plat-omap Merge branch 'blk-end-request' of git://git.kernel.dk/linux-2.6-block 2008-01-29 08:51:32 +11:00
plat-s3c [ARM] 4518/1: S3C: Rename watchdog configuration options 2007-07-22 16:44:38 +01:00
plat-s3c24xx Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm 2008-02-04 15:29:53 -08:00
tools [ARM] Update mach-types 2008-01-26 14:47:48 +00:00
vfp [ARM] 4583/1: ARMv7: Add VFPv3 support 2008-01-26 14:41:28 +00:00
Kconfig gpiolib support for the PXA architecture 2008-02-05 09:44:13 -08:00
Kconfig-nommu [ARM] 4532/1: allow configuration of processor ID 2007-10-12 23:43:02 +01:00
Kconfig.debug [ARM] CONFIG_DEBUG_STACK_USAGE 2008-01-26 14:50:06 +00:00
Makefile Merge branch 'orion' into devel 2008-01-28 13:21:30 +00:00