linux-stable.git/drivers/video/backlight, branch linux-2.6.26.y

backlight: Add OMAP1 PWL backlight driver

2008-02-07T09:31:52+00:00

This adds the OMAP1 PWL-based LCD backlight driver.  It's been in the OMAP
tree for some time.  Note that OMAP2 can do similar things with the generic
timers which have PWM outputs.  Such timers are more generic than the PWL
found on OMAP1 chips, but have a different EMI profile because they aren't
driven by a pseudorandom number generator.

[akpm@linux-foundation.org: cleanups]
Signed-off-by: David Brownell 
Signed-off-by: Andrzej Zaborowski 
Signed-off-by: Andrew Morton 
Signed-off-by: Richard Purdie

backlight: Avoid unecessary driver callbacks

2008-02-07T09:31:52+00:00

Avoid driver callbacks when the brightness hasn't changed since
they're not necessary.

Signed-off-by: Helge Deller 
Signed-off-by: Richard Purdie

atmel_lcdfb: backlight control

2008-02-06T18:41:16+00:00

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 
Signed-off-by: Nicolas Ferre 
Cc: Andrew Victor 
Cc: Russell King 
Cc: "Antonino A. Daplas" 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

fbdev: change asm/uaccess.h to linux/uaccess.h

2007-10-16T16:43:17+00:00

This patch replaces  with  after the
checkpatch.pl hint.  The include of  is removed if the driver
does not use it.

Signed-off-by: Krzysztof Helt 
Signed-off-by: Antonino Daplas 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

Merge git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6

2007-10-13T16:49:04+00:00

* git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6: (124 commits)
  sh: allow building for both r2d boards in same binary.
  sh: fix r2d board detection
  sh: Discard .exit.text/.exit.data at runtime.
  sh: Fix up some section alignments in linker script.
  sh: Fix SH-4 DMAC CHCR masking.
  sh: Rip out left-over nommu cond syscall cruft.
  sh: Make kgdb i-cache flushing less inept.
  sh: kgdb section mismatches and tidying.
  sh: cleanup struct irqaction initializers.
  sh: early_printk tidying.
  video: pvr2fb: Add TV (RGB) support to Dreamcast PVR driver.
  sh: Conditionalize gUSA support.
  sh: Follow gUSA preempt changes in __switch_to().
  sh: Tidy up gUSA preempt handling.
  sh: __copy_user() optimizations for small copies.
  sh: clkfwk: Support multi-level clock propagation.
  sh: Fix URAM start address on SH7785.
  sh: Use boot_cpu_data for CPU probe.
  sh: Support extended mode TLB on SH-X3.
  sh: Bump MAX_ACTIVE_REGIONS for SH7785.
  ...

backlight: Convert corgi backlight driver into a more generic driver

2007-10-11T21:24:13+00:00

Convert the corgi backlight driver to a more generic version
so it can be reused by other code rather than being Zaurus/PXA
specific.

Signed-off-by: Richard Purdie

backlight: Add Samsung LTV350QV LCD driver

2007-10-11T21:24:12+00:00

This patch adds support for powering on and off the Samsung LTV350QV LCD
panel via SPI.  The driver responds to framebuffer power management, it
powers off the panel on reboot/halt/poweroff.  It can also be controlled
through sysfs.  The panel is powered up when the module is loaded, and off
when the module is unloaded.  Verified on AVR32 STK1000.

Signed-off-by: Haavard Skinnemoen 
Signed-off-by: David Brownell 
Signed-off-by: Richard Purdie

backlight: Fix cr_bllcd allocations and error paths

2007-10-11T21:24:12+00:00

After fixing the too small memory allocation in cr_backlight_probe()
from drivers/video/backlight/cr_bllcd.c
(commit e3bbb3f05339de438faf54124f25c92e6fe4ac2e) I noticed that the
Coverity checker also thought there were a few memory leaks in there.
I took a closer look and confirmed that there were indeed several
leaks.

At the start of the function we allocate storage for a
'struct cr_panel' and store the pointer in a variable named 'crp'.

Then we call pci_get_device() and pci_read_config_byte() and if
either of them fail we return without freeing the memory allocated
for the 'struct cr_panel'. These two leaks are easy to fix since we
don't even use 'crp' for anything up to this point, so I simply
moved the allocation further down in the function so it only happens
just before we actually need it.

A bit further down we call backlight_device_register() and store the
result in 'crp->cr_backlight_device'. In case of error we return
'crp->cr_backlight_device' from the function, thus leaking 'crp'
itself. The same thing happens with the call to lcd_device_register().
To fix these two leaks I declare two new pointers to hold the return
values, so that in case of error we can return the pointer (as before)
but without leaking 'crp'.

This version of the patch also adds missing
backlight_device_unregister() / lcd_device_unregister() / pci_dev_put()
calls to error paths.
  Thanks to Richard Purdie  for noticing.

Signed-off-by: Jesper Juhl 
Signed-off-by: Andrew Morton 
Signed-off-by: Richard Purdie

backlight/leds: Make two structs static

2007-10-11T21:24:12+00:00

This patch makes two needlessly global structs static.

Signed-off-by: Adrian Bunk 
Signed-off-by: Andrew Morton 
Signed-off-by: Richard Purdie

backlight: Fix up hp680_bl build.

2007-09-21T02:57:53+00:00

Trivial build fixes.

Signed-off-by: Kristoffer Ericson 
Signed-off-by: Paul Mundt