[Bug 105887] [GLK] no signal after switch resolution from 1080p at 23.98

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=105887

--- Comment #109 from Clinton Taylor <clinton.a.taylor at intel.com> ---
> Maybe the connector check causes the
> initial issue here?

Daniel,
   Using the v3 patch could you apply the following diff? 

Thanks,-Clint

diff --git a/drivers/gpu/drm/i915/intel_ddi.c
b/drivers/gpu/drm/i915/intel_ddi.c
index 89bb5ce..b2ff394 100644
--- a/drivers/gpu/drm/i915/intel_ddi.c
+++ b/drivers/gpu/drm/i915/intel_ddi.c
@@ -1818,15 +1818,16 @@ void intel_ddi_disable_transcoder_func(const struct
inte

        i915_reg_t reg = TRANS_DDI_FUNC_CTL(cpu_transcoder);
        uint32_t val = I915_READ(reg);
-
        val &= ~(TRANS_DDI_FUNC_ENABLE | TRANS_DDI_PORT_MASK |
TRANS_DDI_DP_VC_P
        val |= TRANS_DDI_PORT_NONE;
        I915_WRITE(reg, val);

+       DRM_ERROR(" *** connector type = %d\n", crtc_state->output_types);
        if (dev_priv->quirks & QUIRK_INCREASE_DDI_DISABLED_TIME &&
-           intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI)) {
-               msleep(DDI_DISABLED_QUIRK_TIME);
+           (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI) ||
+            intel_crtc_has_type(crtc_state, INTEL_OUTPUT_UNUSED))) {
                DRM_DEBUG_KMS("Quirk Increase DDI disabled time\n");
+               msleep(DDI_DISABLED_QUIRK_TIME);
        }
 }

diff --git a/drivers/gpu/drm/i915/intel_display.c
b/drivers/gpu/drm/i915/intel_d
index ff42268..d3ad9c1 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -14956,7 +14956,6 @@ static int intel_dmi_reverse_brightness(const struct
dmi
        /* ASRock ITX*/
        { 0x3185, 0x1849, 0x2212, quirk_increase_ddi_disabled_time },
        { 0x3184, 0x1849, 0x2212, quirk_increase_ddi_disabled_time },
-
 };

 static void intel_init_quirks(struct drm_device *dev)

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