[Intel-gfx] [PATCH] drm/i915/sdvo: Shut up state checker with hdmi cards on gen3

[Daniel Vetter]

The hdmi bits simply don't exist, so nerf them. I think audio doesn't
work on gen3 at all, and for the limited color range we should
probably use the colorimetry sdvo paramater instead of the bit in the
port.

But fixing sdvo isn't my goal, I just want to get the backtrace out of
the way, and this takes care of that.

Still, while at it fix the missing read-out of the gen4 audio bit,
maybe that part even works ...

Signed-off-by: Daniel Vetter <daniel.vetter at intel.com>
---
 drivers/gpu/drm/i915/intel_sdvo.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/drivers/gpu/drm/i915/intel_sdvo.c b/drivers/gpu/drm/i915/intel_sdvo.c
index bea8152ae859..0403e30dfabc 100644
--- a/drivers/gpu/drm/i915/intel_sdvo.c
+++ b/drivers/gpu/drm/i915/intel_sdvo.c
@@ -1113,6 +1113,7 @@ static bool intel_sdvo_compute_config(struct intel_encoder *encoder,
 				      struct intel_crtc_state *pipe_config,
 				      struct drm_connector_state *conn_state)
 {
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
 	struct intel_sdvo *intel_sdvo = to_sdvo(encoder);
 	struct intel_sdvo_connector_state *intel_sdvo_state =
 		to_intel_sdvo_connector_state(conn_state);
@@ -1174,6 +1175,12 @@ static bool intel_sdvo_compute_config(struct intel_encoder *encoder,
 			pipe_config->limited_color_range = true;
 	}
 
+	/* gen3 doesn't do the hdmi bits in the SDVO register */
+	if (INTEL_GEN(dev_priv) < 4) {
+		pipe_config->limited_color_range = false;
+		pipe_config->has_audio = false;
+	}
+
 	/* Clock computation needs to happen after pixel multiplier. */
 	if (intel_sdvo->is_tv)
 		i9xx_adjust_sdvo_tv_clock(pipe_config);
@@ -1480,6 +1487,9 @@ static void intel_sdvo_get_config(struct intel_encoder *encoder,
 	if (sdvox & HDMI_COLOR_RANGE_16_235)
 		pipe_config->limited_color_range = true;
 
+	if (sdvox & SDVO_AUDIO_ENABLE)
+		pipe_config->has_audio = true;
+
 	if (intel_sdvo_get_value(intel_sdvo, SDVO_CMD_GET_ENCODE,
 				 &val, 1)) {
 		if (val == SDVO_ENCODE_HDMI)
-- 
2.13.3