[Bug 74964] [BYT]I-G-T/testdisplay && 1920x1080i showing half screen

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=74964

Chris Wilson <chris at chris-wilson.co.uk> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |NEEDINFO

--- Comment #7 from Chris Wilson <chris at chris-wilson.co.uk> ---
A quick test would be to try:

diff --git a/drivers/gpu/drm/i915/intel_display.c
b/drivers/gpu/drm/i915/intel_display.c
index d5eafd1..d58966a 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -5333,7 +5333,7 @@ static void i9xx_set_pipeconf(struct intel_crtc
*intel_crtc)

        if (!IS_GEN2(dev) &&
            intel_crtc->config.adjusted_mode.flags & DRM_MODE_FLAG_INTERLACE)
-               pipeconf |= PIPECONF_INTERLACE_W_FIELD_INDICATION;
+               pipeconf |= PIPECONF_INTERLACE_W_SYNC_SHIFT_PANEL;
        else
                pipeconf |= PIPECONF_PROGRESSIVE;


(This is likely to regress HDMI though and !BYT - but we should also see a
similar bug on gm45.)

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