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authorVille Syrjälä <ville.syrjala@linux.intel.com>2016-10-03 10:55:16 +0300
committerJani Nikula <jani.nikula@intel.com>2016-10-10 16:06:43 +0300
commit16c83fad79ca912b8b5bbdcb5272794a2be41262 (patch)
treeec1845b4730340a479485d0e7bff37d6d933b3c5 /drivers/gpu
parent1015811609c0328b5ed670d07748591b837e74eb (diff)
downloadlinux-16c83fad79ca912b8b5bbdcb5272794a2be41262.tar.bz2
drm/i915: Allow DP to work w/o EDID
Allow returning "connected" or "unknown" connector status for DP branch devices that don't have an EDID. Currently we'd claim the thing as "disconnected" if there is no EDID. This stuff used to broken already, I think, but it got more broken by commit f21a21983ef1 ("drm/i915: Splitting intel_dp_detect") Cc: Damien Cassou <damien@cassou.me> Cc: freedesktop.org@gp.mailgun.org Cc: Arno <blouin.arno@gmail.com> Cc: Shubhangi Shrivastava <shubhangi.shrivastava@intel.com> Cc: Sivakumar Thulasimani <sivakumar.thulasimani@intel.com> Cc: Ander Conselvan de Oliveira <conselvan2@gmail.com> Cc: stable@vger.kernel.org Tested-by: Arno <blouin.arno@gmail.com> Fixes: f21a21983ef1 ("drm/i915: Splitting intel_dp_detect") Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=83348 Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1475481316-8194-2-git-send-email-ville.syrjala@linux.intel.com Reviewed-by: Ander Conselvan de Oliveira <conselvan2@gmail.com> (cherry picked from commit 5cb651a7959310ef4dbb0b93f005b10286789656) Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Diffstat (limited to 'drivers/gpu')
-rw-r--r--drivers/gpu/drm/i915/intel_dp.c22
1 files changed, 9 insertions, 13 deletions
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index 43d6fd3c460b..14a3cf0b7213 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -4337,7 +4337,7 @@ intel_dp_unset_edid(struct intel_dp *intel_dp)
intel_dp->has_audio = false;
}
-static void
+static enum drm_connector_status
intel_dp_long_pulse(struct intel_connector *intel_connector)
{
struct drm_connector *connector = &intel_connector->base;
@@ -4361,7 +4361,7 @@ intel_dp_long_pulse(struct intel_connector *intel_connector)
else
status = connector_status_disconnected;
- if (status != connector_status_connected) {
+ if (status == connector_status_disconnected) {
intel_dp->compliance_test_active = 0;
intel_dp->compliance_test_type = 0;
intel_dp->compliance_test_data = 0;
@@ -4423,8 +4423,8 @@ intel_dp_long_pulse(struct intel_connector *intel_connector)
intel_dp->aux.i2c_defer_count = 0;
intel_dp_set_edid(intel_dp);
-
- status = connector_status_connected;
+ if (is_edp(intel_dp) || intel_connector->detect_edid)
+ status = connector_status_connected;
intel_dp->detect_done = true;
/* Try to read the source of the interrupt */
@@ -4443,12 +4443,11 @@ intel_dp_long_pulse(struct intel_connector *intel_connector)
}
out:
- if ((status != connector_status_connected) &&
- (intel_dp->is_mst == false))
+ if (status != connector_status_connected && !intel_dp->is_mst)
intel_dp_unset_edid(intel_dp);
intel_display_power_put(to_i915(dev), power_domain);
- return;
+ return status;
}
static enum drm_connector_status
@@ -4457,7 +4456,7 @@ intel_dp_detect(struct drm_connector *connector, bool force)
struct intel_dp *intel_dp = intel_attached_dp(connector);
struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp);
struct intel_encoder *intel_encoder = &intel_dig_port->base;
- struct intel_connector *intel_connector = to_intel_connector(connector);
+ enum drm_connector_status status = connector->status;
DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
connector->base.id, connector->name);
@@ -4472,14 +4471,11 @@ intel_dp_detect(struct drm_connector *connector, bool force)
/* If full detect is not performed yet, do a full detect */
if (!intel_dp->detect_done)
- intel_dp_long_pulse(intel_dp->attached_connector);
+ status = intel_dp_long_pulse(intel_dp->attached_connector);
intel_dp->detect_done = false;
- if (is_edp(intel_dp) || intel_connector->detect_edid)
- return connector_status_connected;
- else
- return connector_status_disconnected;
+ return status;
}
static void