diff options
| author | Hans-Christian Egtvedt <hans-christian.egtvedt@atmel.com> | 2008-07-23 21:31:48 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-07-24 10:47:41 -0700 |
| commit | 3e074058d72486676f6fdf6fe803200c62dcb403 (patch) | |
| tree | de9d8c426198e9a10a04593abe8011c1e1822564 /drivers/video/backlight/Kconfig | |
| parent | 2d04a4a72d7e1519b4838f24bdd4b5d0f3f426dc (diff) | |
fbdev: LCD backlight driver using Atmel PWM driver
This patch adds a platform driver using the ATMEL PWM driver to control a
backlight which requires a PWM signal and optional GPIO signal for discrete
on/off signal. It has been tested on Favr-32 board from EarthLCD.
The driver is configurable by supplying a struct with the platform data. See
the include/linux/atmel-pwm-bl.h for details.
The board code for Favr-32 will be submitted to the AVR32 kernel list.
Signed-off-by: Hans-Christian Egtvedt <hans-christian.egtvedt@atmel.com>
Cc: Krzysztof Helt <krzysztof.h1@poczta.fm>
Cc: Haavard Skinnemoen <hskinnemoen@atmel.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/video/backlight/Kconfig')
| -rw-r--r-- | drivers/video/backlight/Kconfig | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/video/backlight/Kconfig b/drivers/video/backlight/Kconfig index b289e197e55..98d9faf4970 100644 --- a/drivers/video/backlight/Kconfig +++ b/drivers/video/backlight/Kconfig @@ -87,6 +87,18 @@ config BACKLIGHT_ATMEL_LCDC If in doubt, it's safe to enable this option; it doesn't kick in unless the board's description says it's wired that way. +config BACKLIGHT_ATMEL_PWM + tristate "Atmel PWM backlight control" + depends on BACKLIGHT_CLASS_DEVICE && ATMEL_PWM + default n + help + Say Y here if you want to use the PWM peripheral in Atmel AT91 and + AVR32 devices. This driver will need additional platform data to know + which PWM instance to use and how to configure it. + + To compile this driver as a module, choose M here: the module will be + called atmel-pwm-bl. + config BACKLIGHT_CORGI tristate "Generic (aka Sharp Corgi) Backlight Driver" depends on BACKLIGHT_CLASS_DEVICE |