Subject: [DRM/I915]: Sync the mode validation for INTERLACE/DBLSCAN
From: Zhao Yakui <yakui.z...@intel.com>
Sync the mode validation for INTERLACE/DBLSCAN
This covers:
Check whether the INTERLACE/DBLSCAN is supported by output device. If
not, the mode containing the flag of INTERLACE/DBLSCAN will be marked
as unsupported.
Signed-off-by: Zhao Yakui <yakui.z...@intel.com>
---
drivers/gpu/drm/drm_crtc_helper.c | 25 +++++++++++++++++++++++++
1 file changed, 25 insertions(+)
Index: linux-2.6/drivers/gpu/drm/drm_crtc_helper.c
===================================================================
--- linux-2.6.orig/drivers/gpu/drm/drm_crtc_helper.c 2009-03-20
11:47:32.000000000 +0800
+++ linux-2.6/drivers/gpu/drm/drm_crtc_helper.c 2009-03-20 13:36:22.000000000
+0800
@@ -41,6 +41,23 @@
968, 1056, 0, 600, 601, 605, 628, 0,
DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
};
+static void drm_mode_validate_flag(struct drm_connector *connector,
+ int flags)
+{
+ struct drm_display_mode *mode, *t;
+ if (flags == (DRM_MODE_FLAG_DBLSCAN |
+ DRM_MODE_FLAG_INTERLACE))
+ return ;
+
+ list_for_each_entry_safe(mode, t, &connector->modes, head) {
+ if (mode->flags & DRM_MODE_FLAG_INTERLACE &&
+ !(flags & DRM_MODE_FLAG_INTERLACE))
+ mode->status = MODE_NO_INTERLACE;
+ if (mode->flags & DRM_MODE_FLAG_DBLSCAN &&
+ !(flags & DRM_MODE_FLAG_DBLSCAN))
+ mode->status = MODE_NO_DBLESCAN;
+ }
+}
/**
* drm_helper_probe_connector_modes - get complete set of display modes
@@ -96,6 +113,14 @@
if (maxX && maxY)
drm_mode_validate_size(dev, &connector->modes, maxX,
maxY, 0);
+ {
+ int flags = (connector->interlace_allowed ?
+ DRM_MODE_FLAG_INTERLACE : 0) |
+ (connector->doublescan_allowed ?
+ DRM_MODE_FLAG_DBLSCAN : 0);
+ drm_mode_validate_flag(connector, flags);
+
+ }
list_for_each_entry_safe(mode, t, &connector->modes, head) {
if (mode->status == MODE_OK)
mode->status = connector_funcs->mode_valid(connector,
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