-
Steffen Trumtrar authored
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:
Philipp Zabel <p.zabel@pengutronix.de> Reviewed-by:
Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by:
Afzal Mohammed <Afzal@ti.com> Tested-by:
Rob Clark <robclark@gmail.com> Tested-by:
Leela Krishna Amudala <leelakrishna.a@gmail.com>
8714c0ce
