[PATCH 04/15] drm/radeon: replace drm_detect_hdmi_monitor() with drm_display_info.is_hdmi

[Claudio Suarez <cssk@net-c.es>]

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 <cssk@net-c.es>
---
 drivers/gpu/drm/radeon/atombios_encoders.c |  6 +++---
 drivers/gpu/drm/radeon/radeon_connectors.c | 20 ++++++++++++++------
 drivers/gpu/drm/radeon/radeon_display.c    |  2 +-
 drivers/gpu/drm/radeon/radeon_encoders.c   |  4 ++--
 drivers/gpu/drm/radeon/radeon_mode.h       |  1 +
 5 files changed, 21 insertions(+), 12 deletions(-)

diff --git a/drivers/gpu/drm/radeon/atombios_encoders.c b/drivers/gpu/drm/radeon/atombios_encoders.c
index 0fce73b9a646..29a140732f71 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 (radeon_connector_is_hdmi_monitor(connector) &&
 				 (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 (radeon_connector_is_hdmi_monitor(connector) &&
 				 (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 (radeon_connector_is_hdmi_monitor(connector) &&
 				 (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..0200f094467c 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 (radeon_connector_is_hdmi_monitor(connector)) {
 				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 (radeon_connector_is_hdmi_monitor(connector)) {
 			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))) {
+		    radeon_connector_is_hdmi_monitor(connector)) {
 			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 (radeon_connector_is_hdmi_monitor(connector)) {
 		/* 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) && radeon_connector_is_hdmi_monitor(connector)) {
 			/* HDMI 1.3+ supports max clock of 340 Mhz */
 			if (mode->clock > 340000)
 				return MODE_CLOCK_HIGH;
@@ -1649,6 +1652,11 @@ bool radeon_connector_is_dp12_capable(struct drm_connector *connector)
 	return false;
 }
 
+bool radeon_connector_is_hdmi_monitor(struct drm_connector *connector)
+{
+	return connector->display_info.is_hdmi;
+}
+
 static enum drm_connector_status
 radeon_dp_detect(struct drm_connector *connector, bool force)
 {
@@ -1804,7 +1812,7 @@ 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) && radeon_connector_is_hdmi_monitor(connector)) {
 				/* 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..0d1f79156ab2 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)) &&
+			      radeon_connector_is_hdmi_monitor(connector) &&
 			      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..8f65fa744f48 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) && radeon_connector_is_hdmi_monitor(connector)) {
 				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) && radeon_connector_is_hdmi_monitor(connector)) {
 				if (pixel_clock > 340000)
 					return true;
 				else
diff --git a/drivers/gpu/drm/radeon/radeon_mode.h b/drivers/gpu/drm/radeon/radeon_mode.h
index fe16f140a6b4..e591179d5e5d 100644
--- a/drivers/gpu/drm/radeon/radeon_mode.h
+++ b/drivers/gpu/drm/radeon/radeon_mode.h
@@ -739,6 +739,7 @@ extern bool radeon_dig_monitor_is_duallink(struct drm_encoder *encoder,
 extern u16 radeon_encoder_get_dp_bridge_encoder_id(struct drm_encoder *encoder);
 extern u16 radeon_connector_encoder_get_dp_bridge_encoder_id(struct drm_connector *connector);
 extern bool radeon_connector_is_dp12_capable(struct drm_connector *connector);
+bool radeon_connector_is_hdmi_monitor(struct drm_connector *connector);
 extern int radeon_get_monitor_bpc(struct drm_connector *connector);
 
 extern struct edid *radeon_connector_edid(struct drm_connector *connector);
-- 
2.33.0