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backlight: lp855x_bl: support new LP8555 device

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LP8555 is one of the LP855x family devices.

This device needs pre_init_device() and post_init_device() driver
structure.  It's same as LP8557, so the device configuration code is
shared with LP8557.  Backlight outputs are generated from dual DC-DC boost
converters.  It's configurable EPROM settings which are defined in the
platform data.

Driver documentation and device tree bindings are updated.

Signed-off-by: Milo Kim <milo.kim@ti.com>
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Milo Kim 2013-11-12 15:08:57 -08:00 • committed by Linus Torvalds
parent b300645aec
commit 5812c13a4e
5 changed files with 67 additions and 7 deletions
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5
Documentation/backlight/lp855x-driver.txt
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@ -4,7 +4,8 @@ Kernel driver lp855x
Backlight driver for LP855x ICs
Supported chips:
Texas Instruments LP8550, LP8551, LP8552, LP8553, LP8556 and LP8557
Texas Instruments LP8550, LP8551, LP8552, LP8553, LP8555, LP8556 and
LP8557
Author: Milo(Woogyom) Kim <milo.kim@ti.com>
@ -24,7 +25,7 @@ Value : pwm based or register based
2) chip_id
The lp855x chip id.
Value : lp8550/lp8551/lp8552/lp8553/lp8556/lp8557
Value : lp8550/lp8551/lp8552/lp8553/lp8555/lp8556/lp8557
Platform data for lp855x
------------------------