[PATCH 10/15] drm/i915/tv: Make TV mode autoselection actually useable

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From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>

The current code insists on picking a new TV mode when
switching between component and non-component cables.
That's super annoying. Let's just keep the current TV
mode unless the new cable type actually disagrees with it.

Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
---
 drivers/gpu/drm/i915/intel_tv.c | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_tv.c b/drivers/gpu/drm/i915/intel_tv.c
index 433f538261c1..32a8786fe0da 100644
--- a/drivers/gpu/drm/i915/intel_tv.c
+++ b/drivers/gpu/drm/i915/intel_tv.c
@@ -1253,16 +1253,18 @@ static void intel_tv_find_better_format(struct drm_connector *connector)
 	const struct tv_mode *tv_mode = intel_tv_mode_find(connector->state);
 	int i;
 
-	if ((intel_tv->type == DRM_MODE_CONNECTOR_Component) ==
-		tv_mode->component_only)
+	/* Component supports everything so we can keep the current mode */
+	if (intel_tv->type == DRM_MODE_CONNECTOR_Component)
 		return;
 
+	/* If the current mode is fine don't change it */
+	if (!tv_mode->component_only)
+		return;
 
 	for (i = 0; i < ARRAY_SIZE(tv_modes); i++) {
-		tv_mode = tv_modes + i;
+		tv_mode = &tv_modes[i];
 
-		if ((intel_tv->type == DRM_MODE_CONNECTOR_Component) ==
-			tv_mode->component_only)
+		if (!tv_mode->component_only)
 			break;
 	}
 
-- 
2.18.1

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