drm/radeon/kms: parse DCE5 encoder caps when setting up encoders

Needed to tell which DIG encoders are HBR2 capable for DP 1.2.

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

3 files changed, 41 insertions, 10 deletions

diff --git a/drivers/gpu/drm/radeon/radeon_atombios.c b/drivers/gpu/drm/radeon/radeon_atombios.c
index 11573d085e61..a2dfe257079c 100644
--- a/drivers/gpu/drm/radeon/radeon_atombios.c
+++ b/drivers/gpu/drm/radeon/radeon_atombios.c
@@ -37,7 +37,7 @@ radeon_get_encoder_enum(struct drm_device *dev, uint32_t supported_device,
 extern void radeon_link_encoder_connector(struct drm_device *dev);
 extern void
 radeon_add_atom_encoder(struct drm_device *dev, uint32_t encoder_enum,
-                        uint32_t supported_device);
+                        uint32_t supported_device, u16 caps);
 
 /* from radeon_connector.c */
 extern void
@@ -537,6 +537,7 @@ bool radeon_get_atom_connector_info_from_object_table(struct drm_device *dev)
         u16 size, data_offset;
         u8 frev, crev;
         ATOM_CONNECTOR_OBJECT_TABLE *con_obj;
+        ATOM_ENCODER_OBJECT_TABLE *enc_obj;
         ATOM_OBJECT_TABLE *router_obj;
         ATOM_DISPLAY_OBJECT_PATH_TABLE *path_obj;
         ATOM_OBJECT_HEADER *obj_header;
@@ -561,6 +562,9 @@ bool radeon_get_atom_connector_info_from_object_table(struct drm_device *dev)
         con_obj = (ATOM_CONNECTOR_OBJECT_TABLE *)
             (ctx->bios + data_offset +
              le16_to_cpu(obj_header->usConnectorObjectTableOffset));
+        enc_obj = (ATOM_ENCODER_OBJECT_TABLE *)
+            (ctx->bios + data_offset +
+             le16_to_cpu(obj_header->usEncoderObjectTableOffset));
         router_obj = (ATOM_OBJECT_TABLE *)
                 (ctx->bios + data_offset +
                  le16_to_cpu(obj_header->usRouterObjectTableOffset));
@@ -666,14 +670,35 @@ bool radeon_get_atom_connector_info_from_object_table(struct drm_device *dev)
                                      OBJECT_TYPE_MASK) >> OBJECT_TYPE_SHIFT;
 
                                 if (grph_obj_type == GRAPH_OBJECT_TYPE_ENCODER) {
-                                        u16 encoder_obj = le16_to_cpu(path->usGraphicObjIds[j]);
-
-                                        radeon_add_atom_encoder(dev,
-                                                                encoder_obj,
-                                                                le16_to_cpu
-                                                                (path->
-                                                                 usDeviceTag));
+                                        for (k = 0; k < enc_obj->ucNumberOfObjects; k++) {
+                                                u16 encoder_obj = le16_to_cpu(enc_obj->asObjects[k].usObjectID);
+                                                if (le16_to_cpu(path->usGraphicObjIds[j]) == encoder_obj) {
+                                                        ATOM_COMMON_RECORD_HEADER *record = (ATOM_COMMON_RECORD_HEADER *)
+                                                                (ctx->bios + data_offset +
+                                                                 le16_to_cpu(enc_obj->asObjects[k].usRecordOffset));
+                                                        ATOM_ENCODER_CAP_RECORD *cap_record;
+                                                        u16 caps = 0;
 
+                                                        while (record->ucRecordType > 0 &&
+                                                               record->ucRecordType <= ATOM_MAX_OBJECT_RECORD_NUMBER) {
+                                                                switch (record->ucRecordType) {
+                                                                case ATOM_ENCODER_CAP_RECORD_TYPE:
+                                                                        cap_record =(ATOM_ENCODER_CAP_RECORD *)
+                                                                                record;
+                                                                        caps = le16_to_cpu(cap_record->usEncoderCap);
+                                                                        break;
+                                                                }
+                                                                record = (ATOM_COMMON_RECORD_HEADER *)
+                                                                        ((char *)record + record->ucRecordSize);
+                                                        }
+                                                        radeon_add_atom_encoder(dev,
+                                                                                encoder_obj,
+                                                                                le16_to_cpu
+                                                                                (path->
+                                                                                 usDeviceTag),
+                                                                                caps);
+                                                }
+                                        }
                                 } else if (grph_obj_type == GRAPH_OBJECT_TYPE_ROUTER) {
                                         for (k = 0; k < router_obj->ucNumberOfObjects; k++) {
                                                 u16 router_obj_id = le16_to_cpu(router_obj->asObjects[k].usObjectID);
@@ -1007,7 +1032,8 @@ bool radeon_get_atom_connector_info_from_supported_devices_table(struct
                                                 radeon_get_encoder_enum(dev,
                                                                       (1 << i),
                                                                       dac),
-                                                (1 << i));
+                                                (1 << i),
+                                                0);
                 else
                         radeon_add_legacy_encoder(dev,
                                                   radeon_get_encoder_enum(dev,
diff --git a/drivers/gpu/drm/radeon/radeon_encoders.c b/drivers/gpu/drm/radeon/radeon_encoders.c
index 3866c648423b..e7a948f60587 100644
--- a/drivers/gpu/drm/radeon/radeon_encoders.c
+++ b/drivers/gpu/drm/radeon/radeon_encoders.c
@@ -2046,7 +2046,10 @@ radeon_atombios_set_dig_info(struct radeon_encoder *radeon_encoder)
 }
 
 void
-radeon_add_atom_encoder(struct drm_device *dev, uint32_t encoder_enum, uint32_t supported_device)
+radeon_add_atom_encoder(struct drm_device *dev,
+                        uint32_t encoder_enum,
+                        uint32_t supported_device,
+                        u16 caps)
 {
         struct radeon_device *rdev = dev->dev_private;
         struct drm_encoder *encoder;
@@ -2089,6 +2092,7 @@ radeon_add_atom_encoder(struct drm_device *dev, uint32_t encoder_enum, uint32_t
         radeon_encoder->rmx_type = RMX_OFF;
         radeon_encoder->underscan_type = UNDERSCAN_OFF;
         radeon_encoder->is_ext_encoder = false;
+        radeon_encoder->caps = caps;
 
         switch (radeon_encoder->encoder_id) {
         case ENCODER_OBJECT_ID_INTERNAL_LVDS:
diff --git a/drivers/gpu/drm/radeon/radeon_mode.h b/drivers/gpu/drm/radeon/radeon_mode.h
index fd185f783a31..12bdeab91c86 100644
--- a/drivers/gpu/drm/radeon/radeon_mode.h
+++ b/drivers/gpu/drm/radeon/radeon_mode.h
@@ -379,6 +379,7 @@ struct radeon_encoder {
         int hdmi_audio_workaround;
         int hdmi_buffer_status;
         bool is_ext_encoder;
+        u16 caps;
 };
 
 struct radeon_connector_atom_dig {