diff options
| author | Lothar Waßmann <LW@KARO-electronics.de> | 2016-07-12 15:30:02 +0200 |
|---|---|---|
| committer | Philipp Zabel <p.zabel@pengutronix.de> | 2016-08-08 11:44:20 +0200 |
| commit | d72daa0d75e8fe71368113350254b9da2c64b235 (patch) | |
| tree | 5a47353d2217b38e099624bd954bf919c2f1ee40 /drivers/gpu/drm/drm_modes.c | |
| parent | Linux 4.8-rc1 (diff) | |
| download | linux-d72daa0d75e8fe71368113350254b9da2c64b235.tar.xz linux-d72daa0d75e8fe71368113350254b9da2c64b235.zip | |
drm: add a helper function to extract 'de-active' and 'pixelclk-active' from DT
add a helper function to extract information about pixel clock and DE
polarity from DT for use by of_get_drm_display_mode().
While at it, convert spaces to tabs in indentation in drm_modes.h.
Signed-off-by: Lothar Waßmann <LW@KARO-electronics.de>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Diffstat (limited to 'drivers/gpu/drm/drm_modes.c')
| -rw-r--r-- | drivers/gpu/drm/drm_modes.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_modes.c b/drivers/gpu/drm/drm_modes.c index fc5040ae5f25..51804e5c58b9 100644 --- a/drivers/gpu/drm/drm_modes.c +++ b/drivers/gpu/drm/drm_modes.c @@ -657,6 +657,21 @@ void drm_display_mode_to_videomode(const struct drm_display_mode *dmode, } EXPORT_SYMBOL_GPL(drm_display_mode_to_videomode); +void drm_bus_flags_from_videomode(const struct videomode *vm, u32 *bus_flags) +{ + *bus_flags = 0; + if (vm->flags & DISPLAY_FLAGS_PIXDATA_POSEDGE) + *bus_flags |= DRM_BUS_FLAG_PIXDATA_POSEDGE; + if (vm->flags & DISPLAY_FLAGS_PIXDATA_NEGEDGE) + *bus_flags |= DRM_BUS_FLAG_PIXDATA_NEGEDGE; + + if (vm->flags & DISPLAY_FLAGS_DE_LOW) + *bus_flags |= DRM_BUS_FLAG_DE_LOW; + if (vm->flags & DISPLAY_FLAGS_DE_HIGH) + *bus_flags |= DRM_BUS_FLAG_DE_HIGH; +} +EXPORT_SYMBOL_GPL(drm_bus_flags_from_videomode); + #ifdef CONFIG_OF /** * of_get_drm_display_mode - get a drm_display_mode from devicetree |