Use the new GPIO descriptor interface to handle the panel's enable GPIO.
This considerably simplifies the code.
Signed-off-by: NAlexandre Courbot <acourbot@nvidia.com>
[treding@nvidia.com: rework to improve readability]
Signed-off-by: NThierry Reding <treding@nvidia.com>

The LP129QE LCD has an LED backlight and a display resolution of
2560x1700 pixels.
Signed-off-by: NThierry Reding <treding@nvidia.com>

This stashes away the EDID data so that the sysfs per-connector file
"edid" can display it. Without this change, the "edid" file is always
empty.
Signed-off-by: NStephen Warren <swarren@nvidia.com>
Signed-off-by: NThierry Reding <treding@nvidia.com>

The Chunghwa CLAA101WA01A is a 10.1" 1366x768 panel, which can be
supported by the simple panel driver.
Signed-off-by: NStephen Warren <swarren@nvidia.com>
Signed-off-by: NThierry Reding <treding@nvidia.com>

The Samsung LNT101NT05 10.1" WXVGA panel can be supported by the simple panel
driver.

Cc: linux-fbdev@vger.kernel.org
Cc: dri-devel@lists.freedesktop.org
Cc: David Airlie <airlied@linux.ie>
Signed-off-by: NMarc Dietrich <marvin24@gmx.de>
Signed-off-by: NThierry Reding <treding@nvidia.com>

The Panasonic VVX10F004B0 is a 10.1" WUXGA TFT LCD panel connected using
four DSI lanes.
Signed-off-by: NThierry Reding <treding@nvidia.com>

Add a driver for simple panels. Such panels can have a regulator that
provides the supply voltage and a separate GPIO to enable the panel.
Optionally the panels can have a backlight associated with them so it
can be enabled or disabled according to the panel's power management
mode.

Support is added for two panels: An AU Optronics 10.1" WSVGA and a
Chunghwa Picture Tubes 10.1" WXGA panel.
Signed-off-by: NThierry Reding <treding@nvidia.com>