diff options
| author | Steffen Trumtrar <s.trumtrar@pengutronix.de> | 2012-12-17 14:20:17 +0100 |
|---|---|---|
| committer | Steffen Trumtrar <s.trumtrar@pengutronix.de> | 2013-01-24 09:03:04 +0100 |
| commit | 8714c0cecfc28f7ce73a520be4831f09743c4fd7 (patch) | |
| tree | e0115b23586ce857c0a1257a7a26d638bf2aa3b3 /drivers/video/Kconfig | |
| parent | ea4f3111ef0daffa1d11fded6f375227febca458 (diff) | |
video: add display_timing and videomode
Add display_timing structure and the according helper functions. This allows
the description of a display via its supported timing parameters.
Also, add helper functions to convert from display timings to a generic videomode
structure.
The struct display_timing specifies all needed parameters to describe the signal
properties of a display in one mode. This includes
- ranges for signals that may have min-, max- and typical values
- single integers for signals that can be on, off or are ignored
- booleans for signals that are either on or off
As a display may support multiple modes like this, a struct display_timings is
added, that holds all given struct display_timing pointers and declares the
native mode of the display.
Although a display may state that a signal can be in a range, it is driven with
fixed values that indicate a videomode. Therefore graphic drivers don't need all
the information of struct display_timing, but would generate a videomode from
the given set of supported signal timings and work with that.
The video subsystems all define their own structs that describe a mode and work
with that (e.g. fb_videomode or drm_display_mode). To slowly replace all those
various structures and allow code reuse across those subsystems, add struct
videomode as a generic description.
This patch only includes the most basic fields in struct videomode. All missing
fields that are needed to have a really generic video mode description can be
added at a later stage.
Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Reviewed-by: Thierry Reding <thierry.reding@avionic-design.de>
Acked-by: Thierry Reding <thierry.reding@avionic-design.de>
Tested-by: Thierry Reding <thierry.reding@avionic-design.de>
Tested-by: Philipp Zabel <p.zabel@pengutronix.de>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Tested-by: Afzal Mohammed <Afzal@ti.com>
Tested-by: Rob Clark <robclark@gmail.com>
Tested-by: Leela Krishna Amudala <leelakrishna.a@gmail.com>
Diffstat (limited to 'drivers/video/Kconfig')
| -rw-r--r-- | drivers/video/Kconfig | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/video/Kconfig b/drivers/video/Kconfig index e7068c508800..09a8f0d8a3d4 100644 --- a/drivers/video/Kconfig +++ b/drivers/video/Kconfig @@ -33,6 +33,12 @@ config VIDEO_OUTPUT_CONTROL This framework adds support for low-level control of the video output switch. +config DISPLAY_TIMING + bool + +config VIDEOMODE + bool + menuconfig FB tristate "Support for frame buffer devices" ---help--- |