drm/radeon/kms: handle !force case in connector detect more gracefully
commit d0d0a225e6ad43314c9aa7ea081f76adc5098ad4 upstream.
When force == false, we don't do load detection in the connector
detect functions. Unforunately, we also return the previous
connector state so we never get disconnect events for DVI-I, DVI-A,
or VGA. Save whether we detected the monitor via load detection
previously and use that to determine whether we return the previous
state or not.
Fixes:
https://bugs.freedesktop.org/show_bug.cgi?id=41561
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/gpu/drm/radeon/radeon_connectors.c b/drivers/gpu/drm/radeon/radeon_connectors.c
index c063da3..404a220 100644
--- a/drivers/gpu/drm/radeon/radeon_connectors.c
+++ b/drivers/gpu/drm/radeon/radeon_connectors.c
@@ -715,6 +715,7 @@
dret = radeon_ddc_probe(radeon_connector,
radeon_connector->requires_extended_probe);
if (dret) {
+ radeon_connector->detected_by_load = false;
if (radeon_connector->edid) {
kfree(radeon_connector->edid);
radeon_connector->edid = NULL;
@@ -741,12 +742,21 @@
} else {
/* if we aren't forcing don't do destructive polling */
- if (!force)
- return connector->status;
+ if (!force) {
+ /* only return the previous status if we last
+ * detected a monitor via load.
+ */
+ if (radeon_connector->detected_by_load)
+ return connector->status;
+ else
+ return ret;
+ }
if (radeon_connector->dac_load_detect && encoder) {
encoder_funcs = encoder->helper_private;
ret = encoder_funcs->detect(encoder, connector);
+ if (ret == connector_status_connected)
+ radeon_connector->detected_by_load = true;
}
}
@@ -888,6 +898,7 @@
dret = radeon_ddc_probe(radeon_connector,
radeon_connector->requires_extended_probe);
if (dret) {
+ radeon_connector->detected_by_load = false;
if (radeon_connector->edid) {
kfree(radeon_connector->edid);
radeon_connector->edid = NULL;
@@ -955,8 +966,13 @@
(connector->connector_type == DRM_MODE_CONNECTOR_HDMIA))
goto out;
+ /* if we aren't forcing don't do destructive polling */
if (!force) {
- ret = connector->status;
+ /* only return the previous status if we last
+ * detected a monitor via load.
+ */
+ if (radeon_connector->detected_by_load)
+ ret = connector->status;
goto out;
}
@@ -980,6 +996,7 @@
ret = encoder_funcs->detect(encoder, connector);
if (ret == connector_status_connected) {
radeon_connector->use_digital = false;
+ radeon_connector->detected_by_load = true;
}
}
break;
diff --git a/drivers/gpu/drm/radeon/radeon_mode.h b/drivers/gpu/drm/radeon/radeon_mode.h
index 68820f5..ed0178f 100644
--- a/drivers/gpu/drm/radeon/radeon_mode.h
+++ b/drivers/gpu/drm/radeon/radeon_mode.h
@@ -447,6 +447,7 @@
struct edid *edid;
void *con_priv;
bool dac_load_detect;
+ bool detected_by_load; /* if the connection status was determined by load */
uint16_t connector_object_id;
struct radeon_hpd hpd;
struct radeon_router router;