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| author | Chris Wilson <chris@chris-wilson.co.uk> | 2011-02-09 20:01:16 +0000 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2011-02-09 21:36:32 +0000 |
| commit | 139467433e50926d22338e9dc754feaaf94b9db0 (patch) | |
| tree | 4b427c7e2541012d5d9c8119bf78eb4fd09ba26e /drivers | |
| parent | ac66808814036b4c33dd98091b2176ae6157f1a8 (diff) | |
| download | linux-stable-139467433e50926d22338e9dc754feaaf94b9db0.tar.gz linux-stable-139467433e50926d22338e9dc754feaaf94b9db0.tar.bz2 linux-stable-139467433e50926d22338e9dc754feaaf94b9db0.zip | |
drm/i915/sdvo: If we have an EDID confirm it matches the mode of the connection
If we have an EDID for a digital panel, but we are probing a non-TMDS
connector then we know that this is a false detection, and vice versa.
This should reduce the number of bogus outputs on multi-function
adapters that report the same output on multiple connectors.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=34101
Reported-by: Sebastien Caty <sebastien.caty@mrnf.gouv.qc.ca>
Tested-by: Sebastien Caty <sebastien.caty@mrnf.gouv.qc.ca>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: stable@kernel.org
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_sdvo.c | 32 |
1 files changed, 27 insertions, 5 deletions
diff --git a/drivers/gpu/drm/i915/intel_sdvo.c b/drivers/gpu/drm/i915/intel_sdvo.c index 6a09c1413d60..d2dd90a9a101 100644 --- a/drivers/gpu/drm/i915/intel_sdvo.c +++ b/drivers/gpu/drm/i915/intel_sdvo.c @@ -46,6 +46,7 @@ SDVO_TV_MASK) #define IS_TV(c) (c->output_flag & SDVO_TV_MASK) +#define IS_TMDS(c) (c->output_flag & SDVO_TMDS_MASK) #define IS_LVDS(c) (c->output_flag & SDVO_LVDS_MASK) #define IS_TV_OR_LVDS(c) (c->output_flag & (SDVO_TV_MASK | SDVO_LVDS_MASK)) @@ -1359,7 +1360,8 @@ intel_sdvo_hdmi_sink_detect(struct drm_connector *connector) intel_sdvo->has_hdmi_monitor = drm_detect_hdmi_monitor(edid); intel_sdvo->has_hdmi_audio = drm_detect_monitor_audio(edid); } - } + } else + status = connector_status_disconnected; connector->display_info.raw_edid = NULL; kfree(edid); } @@ -1407,10 +1409,25 @@ intel_sdvo_detect(struct drm_connector *connector, bool force) if ((intel_sdvo_connector->output_flag & response) == 0) ret = connector_status_disconnected; - else if (response & SDVO_TMDS_MASK) + else if (IS_TMDS(intel_sdvo_connector)) ret = intel_sdvo_hdmi_sink_detect(connector); - else - ret = connector_status_connected; + else { + struct edid *edid; + + /* if we have an edid check it matches the connection */ + edid = intel_sdvo_get_edid(connector); + if (edid == NULL) + edid = intel_sdvo_get_analog_edid(connector); + if (edid != NULL) { + if (edid->input & DRM_EDID_INPUT_DIGITAL) + ret = connector_status_disconnected; + else + ret = connector_status_connected; + connector->display_info.raw_edid = NULL; + kfree(edid); + } else + ret = connector_status_connected; + } /* May update encoder flag for like clock for SDVO TV, etc.*/ if (ret == connector_status_connected) { @@ -1446,10 +1463,15 @@ static void intel_sdvo_get_ddc_modes(struct drm_connector *connector) edid = intel_sdvo_get_analog_edid(connector); if (edid != NULL) { - if (edid->input & DRM_EDID_INPUT_DIGITAL) { + struct intel_sdvo_connector *intel_sdvo_connector = to_intel_sdvo_connector(connector); + bool monitor_is_digital = !!(edid->input & DRM_EDID_INPUT_DIGITAL); + bool connector_is_digital = !!IS_TMDS(intel_sdvo_connector); + + if (connector_is_digital == monitor_is_digital) { drm_mode_connector_update_edid_property(connector, edid); drm_add_edid_modes(connector, edid); } + connector->display_info.raw_edid = NULL; kfree(edid); } |