[RFC][PATCH 0/4] lcd: platform-lcd: Add lcd panel and device tree support

[grant.likely@secretlab.ca (Grant Likely)]

On Mon, Jan 02, 2012 at 11:24:31AM +0530, Thomas Abraham wrote:
> The platform-lcd driver depends on platform-specific callbacks to setup the
> lcd panel. These callbacks are supplied using driver's platform data. But
> for adding device tree support for platform-lcd driver, providing such
> callbacks is not possible (without using auxdata).
> 
> Since the callbacks are usually lcd panel specific, it is possible to include
> the lcd panel specific setup and control functionality in the platform-lcd
> driver itself, thereby eliminating the need for supplying platform specific
> callbacks to the driver. The platform-lcd driver can include support for
> multiple lcd panels.
> 
> This patchset removes the need for platform data for platform-lcd driver and
> adds support which can be used to implement lcd panel specific functionality
> in the driver. As an example, the support for Hydis hv070wsa lcd panel is added
> to the platform-lcd driver which is then used on the Exynos4 based Origen board.
> This currently breaks build for other users of platform-lcd driver. Those can be
> fixed if this approach is acceptable.

Approach looks okay to me.  I've not looked too deeply though.

g.

> 
> Thomas Abraham (4):
>   lcd: platform-lcd: Eliminate need for platform data
>   lcd: platform-lcd: Add support for Hydis hv070wsa lcd panel
>   ARM: Exynos: Remove platform data of platform-lcd driver
>   lcd: platform-lcd: Add device tree support
> 
>  arch/arm/mach-exynos/mach-origen.c     |   25 +-----
>  drivers/video/backlight/Kconfig        |    6 ++
>  drivers/video/backlight/platform_lcd.c |  128 ++++++++++++++++++++++++++++---
>  include/video/platform_lcd.h           |   11 +--
>  4 files changed, 129 insertions(+), 41 deletions(-)
>