From: Paulo Zanoni <paulo.r.zanoni at intel.com>
My laptop has two 1440x900 modes: one is the fixed_mode and the other
has different timings. If I use xrandr to switch from the fixed mode to
the "other" 1440x900 mode, xrandr will tell me the change was
successful, but nothing was actually done: I'm still using the
fixed_mode. This patch allows us to use other modes if hdisplay and
vdisplay are the same.
Signed-off-by: Paulo Zanoni <paulo.r.zanoni at intel.com>
---
drivers/gpu/drm/i915/intel_panel.c | 6 ++++++
1 files changed, 6 insertions(+), 0 deletions(-)
Apply on top of danvet's interlaced branch.
diff --git a/drivers/gpu/drm/i915/intel_panel.c b/drivers/gpu/drm/i915/intel_panel.c
index 230a141..62ca771 100644
--- a/drivers/gpu/drm/i915/intel_panel.c
+++ b/drivers/gpu/drm/i915/intel_panel.c
@@ -36,6 +36,12 @@ void
intel_fixed_panel_mode(struct drm_display_mode *fixed_mode,
struct drm_display_mode *adjusted_mode)
{
+ /* Allow modes that match the panel fixed_mode resolution but have
+ * different timings */
+ if (adjusted_mode->hdisplay == fixed_mode->hdisplay &&
+ adjusted_mode->vdisplay == fixed_mode->vdisplay)
+ return;
+
adjusted_mode->hdisplay = fixed_mode->hdisplay;
adjusted_mode->hsync_start = fixed_mode->hsync_start;
adjusted_mode->hsync_end = fixed_mode->hsync_end;
--
1.7.8.3
