From 149c36a346f63fa4be7d1432d7b1b3095a95bf47 Mon Sep 17 00:00:00 2001 From: Adam Jackson Date: Thu, 29 Apr 2010 14:05:18 -0400 Subject: [PATCH] drm/i915: Be extra careful about A/D matching for multifunction SDVO If we're both RGB and TMDS capable, we'll have set up one connector for each. When determining connectivity, require analog/digital state in the EDID block to match analog/digital support in the connector. Otherwise, both DVI and VGA will appear to be connected. Signed-off-by: Adam Jackson Signed-off-by: Eric Anholt --- drivers/gpu/drm/i915/intel_sdvo.c | 45 +++++++++++++++---------------- 1 file changed, 21 insertions(+), 24 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_sdvo.c b/drivers/gpu/drm/i915/intel_sdvo.c index 5192723637b5..5ad5a098b5bb 100644 --- a/drivers/gpu/drm/i915/intel_sdvo.c +++ b/drivers/gpu/drm/i915/intel_sdvo.c @@ -1504,16 +1504,17 @@ intel_analog_is_connected(struct drm_device *dev) } enum drm_connector_status -intel_sdvo_hdmi_sink_detect(struct drm_connector *connector, u16 response) +intel_sdvo_hdmi_sink_detect(struct drm_connector *connector) { struct drm_encoder *encoder = intel_attached_encoder(connector); struct intel_encoder *intel_encoder = enc_to_intel_encoder(encoder); struct intel_sdvo_priv *sdvo_priv = intel_encoder->dev_priv; + struct intel_connector *intel_connector = to_intel_connector(connector); + struct intel_sdvo_connector *sdvo_connector = intel_connector->dev_priv; enum drm_connector_status status = connector_status_connected; struct edid *edid = NULL; - edid = drm_get_edid(connector, - intel_encoder->ddc_bus); + edid = drm_get_edid(connector, intel_encoder->ddc_bus); /* This is only applied to SDVO cards with multiple outputs */ if (edid == NULL && intel_sdvo_multifunc_encoder(intel_encoder)) { @@ -1526,8 +1527,7 @@ intel_sdvo_hdmi_sink_detect(struct drm_connector *connector, u16 response) */ while(temp_ddc > 1) { sdvo_priv->ddc_bus = temp_ddc; - edid = drm_get_edid(connector, - intel_encoder->ddc_bus); + edid = drm_get_edid(connector, intel_encoder->ddc_bus); if (edid) { /* * When we can get the EDID, maybe it is the @@ -1544,28 +1544,25 @@ intel_sdvo_hdmi_sink_detect(struct drm_connector *connector, u16 response) /* when there is no edid and no monitor is connected with VGA * port, try to use the CRT ddc to read the EDID for DVI-connector */ - if (edid == NULL && - sdvo_priv->analog_ddc_bus && + if (edid == NULL && sdvo_priv->analog_ddc_bus && !intel_analog_is_connected(connector->dev)) - edid = drm_get_edid(connector, - sdvo_priv->analog_ddc_bus); + edid = drm_get_edid(connector, sdvo_priv->analog_ddc_bus); + if (edid != NULL) { - /* Don't report the output as connected if it's a DVI-I - * connector with a non-digital EDID coming out. - */ - if (response & (SDVO_OUTPUT_TMDS0 | SDVO_OUTPUT_TMDS1)) { - if (edid->input & DRM_EDID_INPUT_DIGITAL) - sdvo_priv->is_hdmi = - drm_detect_hdmi_monitor(edid); - else - status = connector_status_disconnected; - } + bool is_digital = !!(edid->input & DRM_EDID_INPUT_DIGITAL); + bool need_digital = !!(sdvo_connector->output_flag & SDVO_TMDS_MASK); - kfree(edid); - connector->display_info.raw_edid = NULL; + /* DDC bus is shared, match EDID to connector type */ + if (is_digital && need_digital) + sdvo_priv->is_hdmi = drm_detect_hdmi_monitor(edid); + else if (is_digital != need_digital) + status = connector_status_disconnected; - } else if (response & (SDVO_OUTPUT_TMDS0 | SDVO_OUTPUT_TMDS1)) + connector->display_info.raw_edid = NULL; + } else status = connector_status_disconnected; + + kfree(edid); return status; } @@ -1601,8 +1598,8 @@ static enum drm_connector_status intel_sdvo_detect(struct drm_connector *connect if ((sdvo_connector->output_flag & response) == 0) ret = connector_status_disconnected; - else if (response & (SDVO_OUTPUT_TMDS0 | SDVO_OUTPUT_TMDS1)) - ret = intel_sdvo_hdmi_sink_detect(connector, response); + else if (response & SDVO_TMDS_MASK) + ret = intel_sdvo_hdmi_sink_detect(connector); else ret = connector_status_connected; -- 2.39.5