There may be multiple ways of controlling the backlight on a given
machine.  Allow drivers to expose the type of interface they are
providing, making it possible for userspace to make appropriate policy
decisions.
Signed-off-by: NMatthew Garrett <mjg@redhat.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: David Airlie <airlied@linux.ie>
Cc: Alex Deucher <alexdeucher@gmail.com>
Cc: Ben Skeggs <bskeggs@redhat.com>
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: Len Brown <lenb@kernel.org>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Add support for the MacBookAir3,1 and MacBookAir3,2 to the mbp-nvidia-bl
driver.
Signed-off-by: NEdgar (gimli) Hucek <gimli@dark-green.com>
Acked-by: NRichard Purdie <rpurdie@linux.intel.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Fix DMI_SYS_VENDOR for MacBook1,1.

When the MacBook1,1 came out Apple was still named Apple Computer, I am
not sure if this applies to older MacBook2,1 versions aswell.
Signed-off-by: NSteffen Röcker <sroecker@gmail.com>
Signed-off-by: NRichard Purdie <rpurdie@linux.intel.com>

Add support for all remaining models not yet present in Linus'/Richard
Purdie's tree nor Evan McClain's patch to finally complete the list.
Signed-off-by: NMario Schwalbe <schwalbe@inf.tu-dresden.de>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NRichard Purdie <rpurdie@linux.intel.com>

This adds the MacBook 1,1 2,1 3,1 4,1 and 4,2 to the DMI tables.
Signed-off-by: NEvan McClain <evan.mcclain@gatech.edu>
Signed-off-by: NRichard Purdie <rpurdie@linux.intel.com>

Values such as max_brightness should be set before backlights are
registered, but the current API doesn't allow that. Add a parameter to
backlight_device_register and update drivers to ensure that they
set this correctly.
Signed-off-by: NMatthew Garrett <mjg@redhat.com>
Signed-off-by: NRichard Purdie <rpurdie@linux.intel.com>

This adds the MacBookPro 5,3 and 5,4 to the DMI tables.
Signed-off-by: NDaniel Ritz <daniel.ritz@gmx.ch>
Signed-off-by: NRichard Purdie <rpurdie@linux.intel.com>

Signed-off-by: NEmese Revfy <re.emese@gmail.com>
Signed-off-by: NRichard Purdie <rpurdie@linux.intel.com>

This patch adds support for the new Apple models MacBook 5,1,
MacBook Pro 5,1, MacBook Pro 5,2, MacBook Pro 5,5. It's just a
device table update.
Signed-off-by: NMario Schwalbe <schwalbe@inf.tu-dresden.de>
Signed-off-by: NRichard Purdie <rpurdie@linux.intel.com>

Add LCD backlight support for the Intel GMA965 found in the MacBookAir
1,1.
Signed-off-by: NHenrik Rydberg <rydberg@euromail.se>
Acked-by: NMatthew Garrett <mjg@redhat.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NRichard Purdie <rpurdie@linux.intel.com>

This patch adds a debug switch to enable (little) diagnostic
output, to help to trace down the remaining problems.
Signed-off-by: NMario Schwalbe <schwalbe@inf.tu-dresden.de>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NRichard Purdie <rpurdie@linux.intel.com>

This patch adds support for the new Apple models incorporating an Nvidia
chipset.  Apple still uses the same protocol as on older models, but the
registers moved to a different address. To do this, two sets of functions
are added for the Intel/Nvidia chipset models and passed by the DMI_MATCH
function.

The initial code has been contributed by Hu Gang <hugang@soulinfo.com>.

The driver is known to work on MacBook Pro 3, MacBook Pro 4 and MacBook
Pro 5.

Its known to work with limitations on MacBook 5 / MacBook Air 2. Changing
brightness within X doesn't work, if using Nvidia's proprietary graphics
driver with no known fix at present. Changing brightness on a text console
or using the open-source driver does work.

MacBook Pro 5 has a known bug where the initial brightness after bootup is
the last recently used brightness (in Mac OSX), while the firmware reports
maximum. Impossible to fix.

[akpm@linux-foundation.org: build fix]
[rpurdie@linux.intel.com: Rebased the patch against latest git]
Signed-off-by: NMario Schwalbe <schwalbe@inf.tu-dresden.de>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NRichard Purdie <rpurdie@linux.intel.com>

Add suspend/resume support to the backlight core and enable use of it
by appropriate drivers.
Signed-off-by: NRichard Purdie <rpurdie@linux.intel.com>

Use new MODULE_DEVICE_TABLE(dmi, ...) facility. There's no need for
every driver to screw it up for themselves, when the alias can be
generated automatically.
Signed-off-by: NDavid Woodhouse <David.Woodhouse@intel.com>

Nvidia-based Apple Macbook Pros don't appear to handle backlight control
through the graphics card registers or ACPI, but instead trigger changes
via SMI calls. This driver registers a generic backlight device that
lets existing userspace deal with it. Code derived from Julien Blache's
Pommed application.
Signed-off-by: NJulien Blache <jb@jblache.org>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>
Signed-off-by: NRichard Purdie <rpurdie@rpsys.net>