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Date: Thu, 18 Dec 2014 18:00:22 -0800
From: Steve Longerbeam <slongerbeam@...il.com>
To: dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
linux-fbdev@...r.kernel.org, David Airlie <airlied@...ux.ie>,
Philipp Zabel <p.zabel@...gutronix.de>,
Jean-Christophe Plagniol-Villard <plagnioj@...osoft.com>,
Tomi Valkeinen <tomi.valkeinen@...com>
Cc: Russell King <rmk+kernel@....linux.org.uk>,
Fabio Estevam <fabio.estevam@...escale.com>,
Shawn Guo <shawn.guo@...aro.org>,
Denis Carikli <denis@...rea.com>,
Jiada Wang <jiada_wang@...tor.com>,
Steve Longerbeam <steve_longerbeam@...tor.com>
Subject: [PATCH v2 3/7] drm_modes: add videomode_from_drm_display_mode
Add conversion from drm_display_mode to videomode.
Signed-off-by: Steve Longerbeam <steve_longerbeam@...tor.com>
---
drivers/gpu/drm/drm_modes.c | 40 ++++++++++++++++++++++++++++++++++++++++
include/drm/drm_modes.h | 2 ++
2 files changed, 42 insertions(+)
diff --git a/drivers/gpu/drm/drm_modes.c b/drivers/gpu/drm/drm_modes.c
index 6d8b941..583a391 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);
+/**
+ * videomode_from_drm_display_mode - 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 videomode_from_drm_display_mode(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(videomode_from_drm_display_mode);
+
#ifdef CONFIG_OF
/**
* of_get_drm_display_mode - get a drm_display_mode from devicetree
diff --git a/include/drm/drm_modes.h b/include/drm/drm_modes.h
index 91d0582..60c0144 100644
--- a/include/drm/drm_modes.h
+++ b/include/drm/drm_modes.h
@@ -197,6 +197,8 @@ struct drm_display_mode *drm_gtf_mode_complex(struct drm_device *dev,
int GTF_K, int GTF_2J);
void drm_display_mode_from_videomode(const struct videomode *vm,
struct drm_display_mode *dmode);
+void videomode_from_drm_display_mode(const struct drm_display_mode *dmode,
+ struct videomode *vm);
int of_get_drm_display_mode(struct device_node *np,
struct drm_display_mode *dmode,
int index);
--
1.7.9.5
--
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