summaryrefslogtreecommitdiffstats
path: root/drivers/gpu/drm/drm_modes.c
diff options
context:
space:
mode:
authorSteve Longerbeam <slongerbeam@gmail.com>2014-12-19 03:00:22 +0100
committerPhilipp Zabel <p.zabel@pengutronix.de>2015-01-07 19:15:02 +0100
commitd490f455f4ac3d97fbf109deae1e017b26acffda (patch)
treefbc74071bf55874018edc4a704f1f79c01857b35 /drivers/gpu/drm/drm_modes.c
parentgpu: ipu-di: remove some non-functional code (diff)
downloadlinux-d490f455f4ac3d97fbf109deae1e017b26acffda.tar.xz
linux-d490f455f4ac3d97fbf109deae1e017b26acffda.zip
drm_modes: add drm_display_mode_to_videomode
Add conversion from drm_display_mode to videomode. Signed-off-by: Steve Longerbeam <steve_longerbeam@mentor.com> 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.c40
1 files changed, 40 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_modes.c b/drivers/gpu/drm/drm_modes.c
index 6d8b941c8200..9731aeba40a6 100644
--- a/drivers/gpu/drm/drm_modes.c
+++ b/drivers/gpu/drm/drm_modes.c
@@ -615,6 +615,46 @@ void drm_display_mode_from_videomode(const struct videomode *vm,
}
EXPORT_SYMBOL_GPL(drm_display_mode_from_videomode);
+/**
+ * drm_display_mode_to_videomode - fill in @vm using @dmode,
+ * @dmode: drm_display_mode structure to use as source
+ * @vm: videomode structure to use as destination
+ *
+ * Fills out @vm using the display mode specified in @dmode.
+ */
+void drm_display_mode_to_videomode(const struct drm_display_mode *dmode,
+ struct videomode *vm)
+{
+ vm->hactive = dmode->hdisplay;
+ vm->hfront_porch = dmode->hsync_start - dmode->hdisplay;
+ vm->hsync_len = dmode->hsync_end - dmode->hsync_start;
+ vm->hback_porch = dmode->htotal - dmode->hsync_end;
+
+ vm->vactive = dmode->vdisplay;
+ vm->vfront_porch = dmode->vsync_start - dmode->vdisplay;
+ vm->vsync_len = dmode->vsync_end - dmode->vsync_start;
+ vm->vback_porch = dmode->vtotal - dmode->vsync_end;
+
+ vm->pixelclock = dmode->clock * 1000;
+
+ vm->flags = 0;
+ if (dmode->flags & DRM_MODE_FLAG_PHSYNC)
+ vm->flags |= DISPLAY_FLAGS_HSYNC_HIGH;
+ else if (dmode->flags & DRM_MODE_FLAG_NHSYNC)
+ vm->flags |= DISPLAY_FLAGS_HSYNC_LOW;
+ if (dmode->flags & DRM_MODE_FLAG_PVSYNC)
+ vm->flags |= DISPLAY_FLAGS_VSYNC_HIGH;
+ else if (dmode->flags & DRM_MODE_FLAG_NVSYNC)
+ vm->flags |= DISPLAY_FLAGS_VSYNC_LOW;
+ if (dmode->flags & DRM_MODE_FLAG_INTERLACE)
+ vm->flags |= DISPLAY_FLAGS_INTERLACED;
+ if (dmode->flags & DRM_MODE_FLAG_DBLSCAN)
+ vm->flags |= DISPLAY_FLAGS_DOUBLESCAN;
+ if (dmode->flags & DRM_MODE_FLAG_DBLCLK)
+ vm->flags |= DISPLAY_FLAGS_DOUBLECLK;
+}
+EXPORT_SYMBOL_GPL(drm_display_mode_to_videomode);
+
#ifdef CONFIG_OF
/**
* of_get_drm_display_mode - get a drm_display_mode from devicetree