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| author | Philipp Zabel <p.zabel@pengutronix.de> | 2014-12-11 18:32:44 +0100 |
|---|---|---|
| committer | Thierry Reding <treding@nvidia.com> | 2015-04-02 19:04:12 +0200 |
| commit | 2938931f3732a4ec70c299e221ec8dea01dfd796 (patch) | |
| tree | 4f08dd05bd203e91000989c1dea8804a35c735df /include/drm/drm_panel.h | |
| parent | 725c9d40f3fe61256903adfab868f302e249fa2a (diff) | |
| download | linux-2938931f3732a4ec70c299e221ec8dea01dfd796.tar.gz linux-2938931f3732a4ec70c299e221ec8dea01dfd796.tar.bz2 linux-2938931f3732a4ec70c299e221ec8dea01dfd796.zip | |
drm/panel: Add display timing support
Many panel data sheets, additionally to typical values, list allowed
ranges for timings such as hsync/vsync lengths, porches, and the pixel
clock rate. These can be stored in a struct display_timing, to be used
by an encoder mode_fixup callback to clamp user provided timing values
or to validate workarounds for clock source limitations.
This patch adds a new drm_panel_funcs callback that returns the panel's
available display_timing entries.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Diffstat (limited to 'include/drm/drm_panel.h')
| -rw-r--r-- | include/drm/drm_panel.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/drm/drm_panel.h b/include/drm/drm_panel.h index 1fbcc96063a7..13ff44b28893 100644 --- a/include/drm/drm_panel.h +++ b/include/drm/drm_panel.h @@ -29,6 +29,7 @@ struct drm_connector; struct drm_device; struct drm_panel; +struct display_timing; /** * struct drm_panel_funcs - perform operations on a given panel @@ -38,6 +39,8 @@ struct drm_panel; * @enable: enable panel (turn on back light, etc.) * @get_modes: add modes to the connector that the panel is attached to and * return the number of modes added + * @get_timings: copy display timings into the provided array and return + * the number of display timings available * * The .prepare() function is typically called before the display controller * starts to transmit video data. Panel drivers can use this to turn the panel @@ -68,6 +71,8 @@ struct drm_panel_funcs { int (*prepare)(struct drm_panel *panel); int (*enable)(struct drm_panel *panel); int (*get_modes)(struct drm_panel *panel); + int (*get_timings)(struct drm_panel *panel, unsigned int num_timings, + struct display_timing *timings); }; struct drm_panel { |