Once EDID is parsed, the monitor HDMI support information is available
through drm_display_info.is_hdmi. Retriving the same information is less
efficient. Change to drm_display_info.is_hdmi

This is a TODO task in Documentation/gpu/todo.rst

Also, correct an inacurracy or bug in
radeon_connector_get_edid()/radeon_connector_free_edid(). Two variables
have EDID data:
- struct radeon_connector.edid
- struct drm_connector.edid_blob_ptr
The second is updated by calling drm_connector_update_edid_property() or
drm_get_edid() - which internally calls drm_connector_update_edid_property().
drm_display_info.is_hdmi is updated when this function is called.
radeon_connector_get_edid() calls drm_get_edid() to update
drm_connector.edid_blob_ptr/drm_display_info only in some cases. Change it
to be always up to date, so drm_display_info is always correct.
As counterpart, reset these values in radeon_connector_free_edid().

This second change is necessary for the previous one to work properly.

Signed-off-by: Claudio Suarez <c...@net-c.es>
---
 drivers/gpu/drm/radeon/atombios_encoders.c |  6 +++---
 drivers/gpu/drm/radeon/radeon_connectors.c | 15 +++++++++------
 drivers/gpu/drm/radeon/radeon_display.c    |  2 +-
 drivers/gpu/drm/radeon/radeon_encoders.c   |  4 ++--
 4 files changed, 15 insertions(+), 12 deletions(-)

diff --git a/drivers/gpu/drm/radeon/atombios_encoders.c 
b/drivers/gpu/drm/radeon/atombios_encoders.c
index 0fce73b9a646..844f61a36f20 100644
--- a/drivers/gpu/drm/radeon/atombios_encoders.c
+++ b/drivers/gpu/drm/radeon/atombios_encoders.c
@@ -713,7 +713,7 @@ atombios_get_encoder_mode(struct drm_encoder *encoder)
                        if (radeon_connector->use_digital &&
                            (radeon_connector->audio == RADEON_AUDIO_ENABLE))
                                return ATOM_ENCODER_MODE_HDMI;
-                       else if 
(drm_detect_hdmi_monitor(radeon_connector_edid(connector)) &&
+                       else if (connector->display_info.is_hdmi &&
                                 (radeon_connector->audio == RADEON_AUDIO_AUTO))
                                return ATOM_ENCODER_MODE_HDMI;
                        else if (radeon_connector->use_digital)
@@ -732,7 +732,7 @@ atombios_get_encoder_mode(struct drm_encoder *encoder)
                if (radeon_audio != 0) {
                        if (radeon_connector->audio == RADEON_AUDIO_ENABLE)
                                return ATOM_ENCODER_MODE_HDMI;
-                       else if 
(drm_detect_hdmi_monitor(radeon_connector_edid(connector)) &&
+                       else if (connector->display_info.is_hdmi &&
                                 (radeon_connector->audio == RADEON_AUDIO_AUTO))
                                return ATOM_ENCODER_MODE_HDMI;
                        else
@@ -756,7 +756,7 @@ atombios_get_encoder_mode(struct drm_encoder *encoder)
                } else if (radeon_audio != 0) {
                        if (radeon_connector->audio == RADEON_AUDIO_ENABLE)
                                return ATOM_ENCODER_MODE_HDMI;
-                       else if 
(drm_detect_hdmi_monitor(radeon_connector_edid(connector)) &&
+                       else if (connector->display_info.is_hdmi &&
                                 (radeon_connector->audio == RADEON_AUDIO_AUTO))
                                return ATOM_ENCODER_MODE_HDMI;
                        else
diff --git a/drivers/gpu/drm/radeon/radeon_connectors.c 
b/drivers/gpu/drm/radeon/radeon_connectors.c
index 607ad5620bd9..deaae181ac59 100644
--- a/drivers/gpu/drm/radeon/radeon_connectors.c
+++ b/drivers/gpu/drm/radeon/radeon_connectors.c
@@ -130,7 +130,7 @@ int radeon_get_monitor_bpc(struct drm_connector *connector)
        case DRM_MODE_CONNECTOR_DVII:
        case DRM_MODE_CONNECTOR_HDMIB:
                if (radeon_connector->use_digital) {
-                       if 
(drm_detect_hdmi_monitor(radeon_connector_edid(connector))) {
+                       if (connector->display_info.is_hdmi) {
                                if (connector->display_info.bpc)
                                        bpc = connector->display_info.bpc;
                        }
@@ -138,7 +138,7 @@ int radeon_get_monitor_bpc(struct drm_connector *connector)
                break;
        case DRM_MODE_CONNECTOR_DVID:
        case DRM_MODE_CONNECTOR_HDMIA:
-               if (drm_detect_hdmi_monitor(radeon_connector_edid(connector))) {
+               if (connector->display_info.is_hdmi) {
                        if (connector->display_info.bpc)
                                bpc = connector->display_info.bpc;
                }
@@ -147,7 +147,7 @@ int radeon_get_monitor_bpc(struct drm_connector *connector)
                dig_connector = radeon_connector->con_priv;
                if ((dig_connector->dp_sink_type == 
CONNECTOR_OBJECT_ID_DISPLAYPORT) ||
                    (dig_connector->dp_sink_type == CONNECTOR_OBJECT_ID_eDP) ||
-                   drm_detect_hdmi_monitor(radeon_connector_edid(connector))) {
+                   connector->display_info.is_hdmi) {
                        if (connector->display_info.bpc)
                                bpc = connector->display_info.bpc;
                }
@@ -171,7 +171,7 @@ int radeon_get_monitor_bpc(struct drm_connector *connector)
                break;
        }
 
-       if (drm_detect_hdmi_monitor(radeon_connector_edid(connector))) {
+       if (connector->display_info.is_hdmi) {
                /* hdmi deep color only implemented on DCE4+ */
                if ((bpc > 8) && !ASIC_IS_DCE4(rdev)) {
                        DRM_DEBUG("%s: HDMI deep color %d bpc unsupported. 
Using 8 bpc.\n",
@@ -348,6 +348,8 @@ static void radeon_connector_get_edid(struct drm_connector 
*connector)
                        /* some servers provide a hardcoded edid in rom for 
KVMs */
                        radeon_connector->edid = 
radeon_bios_get_hardcoded_edid(rdev);
                }
+               if (radeon_connector->edid)
+                       drm_connector_update_edid_property(connector, 
radeon_connector->edid);
        }
 }
 
@@ -358,6 +360,7 @@ static void radeon_connector_free_edid(struct drm_connector 
*connector)
        if (radeon_connector->edid) {
                kfree(radeon_connector->edid);
                radeon_connector->edid = NULL;
+               drm_connector_update_edid_property(connector, NULL);
        }
 }
 
@@ -1496,7 +1499,7 @@ static enum drm_mode_status radeon_dvi_mode_valid(struct 
drm_connector *connecto
                    (radeon_connector->connector_object_id == 
CONNECTOR_OBJECT_ID_DUAL_LINK_DVI_D) ||
                    (radeon_connector->connector_object_id == 
CONNECTOR_OBJECT_ID_HDMI_TYPE_B))
                        return MODE_OK;
-               else if (ASIC_IS_DCE6(rdev) && 
drm_detect_hdmi_monitor(radeon_connector_edid(connector))) {
+               else if (ASIC_IS_DCE6(rdev) && connector->display_info.is_hdmi) 
{
                        /* HDMI 1.3+ supports max clock of 340 Mhz */
                        if (mode->clock > 340000)
                                return MODE_CLOCK_HIGH;
@@ -1804,7 +1807,7 @@ static enum drm_mode_status radeon_dp_mode_valid(struct 
drm_connector *connector
                    (radeon_dig_connector->dp_sink_type == 
CONNECTOR_OBJECT_ID_eDP)) {
                        return radeon_dp_mode_valid_helper(connector, mode);
                } else {
-                       if (ASIC_IS_DCE6(rdev) && 
drm_detect_hdmi_monitor(radeon_connector_edid(connector))) {
+                       if (ASIC_IS_DCE6(rdev) && 
connector->display_info.is_hdmi) {
                                /* HDMI 1.3+ supports max clock of 340 Mhz */
                                if (mode->clock > 340000)
                                        return MODE_CLOCK_HIGH;
diff --git a/drivers/gpu/drm/radeon/radeon_display.c 
b/drivers/gpu/drm/radeon/radeon_display.c
index 573154268d43..f406933a8f1d 100644
--- a/drivers/gpu/drm/radeon/radeon_display.c
+++ b/drivers/gpu/drm/radeon/radeon_display.c
@@ -1720,7 +1720,7 @@ bool radeon_crtc_scaling_mode_fixup(struct drm_crtc *crtc,
                            (!(mode->flags & DRM_MODE_FLAG_INTERLACE)) &&
                            ((radeon_encoder->underscan_type == UNDERSCAN_ON) ||
                             ((radeon_encoder->underscan_type == 
UNDERSCAN_AUTO) &&
-                             
drm_detect_hdmi_monitor(radeon_connector_edid(connector)) &&
+                             connector->display_info.is_hdmi &&
                              is_hdtv_mode(mode)))) {
                                if (radeon_encoder->underscan_hborder != 0)
                                        radeon_crtc->h_border = 
radeon_encoder->underscan_hborder;
diff --git a/drivers/gpu/drm/radeon/radeon_encoders.c 
b/drivers/gpu/drm/radeon/radeon_encoders.c
index 46549d5179ee..b999464f213a 100644
--- a/drivers/gpu/drm/radeon/radeon_encoders.c
+++ b/drivers/gpu/drm/radeon/radeon_encoders.c
@@ -383,7 +383,7 @@ bool radeon_dig_monitor_is_duallink(struct drm_encoder 
*encoder,
        case DRM_MODE_CONNECTOR_HDMIB:
                if (radeon_connector->use_digital) {
                        /* HDMI 1.3 supports up to 340 Mhz over single link */
-                       if (ASIC_IS_DCE6(rdev) && 
drm_detect_hdmi_monitor(radeon_connector_edid(connector))) {
+                       if (ASIC_IS_DCE6(rdev) && 
connector->display_info.is_hdmi) {
                                if (pixel_clock > 340000)
                                        return true;
                                else
@@ -408,7 +408,7 @@ bool radeon_dig_monitor_is_duallink(struct drm_encoder 
*encoder,
                        return false;
                else {
                        /* HDMI 1.3 supports up to 340 Mhz over single link */
-                       if (ASIC_IS_DCE6(rdev) && 
drm_detect_hdmi_monitor(radeon_connector_edid(connector))) {
+                       if (ASIC_IS_DCE6(rdev) && 
connector->display_info.is_hdmi) {
                                if (pixel_clock > 340000)
                                        return true;
                                else
-- 
2.33.0



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