drm/radeon/kms: add support for encoder cloning.
The RN50 really needs this since its a single crtc card,
however other gpus may benefit from it as well.
Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/drivers/gpu/drm/radeon/radeon_display.c b/drivers/gpu/drm/radeon/radeon_display.c
index 5859109..62b0237 100644
--- a/drivers/gpu/drm/radeon/radeon_display.c
+++ b/drivers/gpu/drm/radeon/radeon_display.c
@@ -324,6 +324,7 @@
ret = radeon_get_legacy_connector_info_from_table(dev);
}
if (ret) {
+ radeon_setup_encoder_clones(dev);
radeon_print_display_setup(dev);
list_for_each_entry(drm_connector, &dev->mode_config.connector_list, head)
radeon_ddc_dump(drm_connector);
diff --git a/drivers/gpu/drm/radeon/radeon_encoders.c b/drivers/gpu/drm/radeon/radeon_encoders.c
index 57a29f3..52e484f 100644
--- a/drivers/gpu/drm/radeon/radeon_encoders.c
+++ b/drivers/gpu/drm/radeon/radeon_encoders.c
@@ -35,6 +35,51 @@
bool radeon_atom_get_tv_timings(struct radeon_device *rdev, int index,
struct drm_display_mode *mode);
+static uint32_t radeon_encoder_clones(struct drm_encoder *encoder)
+{
+ struct drm_device *dev = encoder->dev;
+ struct radeon_device *rdev = dev->dev_private;
+ struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
+ struct drm_encoder *clone_encoder;
+ uint32_t index_mask = 0;
+ int count;
+
+ /* DIG routing gets problematic */
+ if (rdev->family >= CHIP_R600)
+ return index_mask;
+ /* LVDS/TV are too wacky */
+ if (radeon_encoder->devices & ATOM_DEVICE_LCD_SUPPORT)
+ return index_mask;
+ /* DVO requires 2x ppll clocks depending on tmds chip */
+ if (radeon_encoder->devices & ATOM_DEVICE_DFP2_SUPPORT)
+ return index_mask;
+
+ count = -1;
+ list_for_each_entry(clone_encoder, &dev->mode_config.encoder_list, head) {
+ struct radeon_encoder *radeon_clone = to_radeon_encoder(clone_encoder);
+ count++;
+
+ if (clone_encoder == encoder)
+ continue;
+ if (radeon_clone->devices & (ATOM_DEVICE_LCD_SUPPORT))
+ continue;
+ if (radeon_clone->devices & ATOM_DEVICE_DFP2_SUPPORT)
+ continue;
+ else
+ index_mask |= (1 << count);
+ }
+ return index_mask;
+}
+
+void radeon_setup_encoder_clones(struct drm_device *dev)
+{
+ struct drm_encoder *encoder;
+
+ list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
+ encoder->possible_clones = radeon_encoder_clones(encoder);
+ }
+}
+
uint32_t
radeon_get_encoder_id(struct drm_device *dev, uint32_t supported_device, uint8_t dac)
{
@@ -1341,7 +1386,6 @@
encoder->possible_crtcs = 0x1;
else
encoder->possible_crtcs = 0x3;
- encoder->possible_clones = 0;
radeon_encoder->enc_priv = NULL;
diff --git a/drivers/gpu/drm/radeon/radeon_legacy_encoders.c b/drivers/gpu/drm/radeon/radeon_legacy_encoders.c
index ae554bf..36ac476 100644
--- a/drivers/gpu/drm/radeon/radeon_legacy_encoders.c
+++ b/drivers/gpu/drm/radeon/radeon_legacy_encoders.c
@@ -1331,7 +1331,6 @@
encoder->possible_crtcs = 0x1;
else
encoder->possible_crtcs = 0x3;
- encoder->possible_clones = 0;
radeon_encoder->enc_priv = NULL;
diff --git a/drivers/gpu/drm/radeon/radeon_mode.h b/drivers/gpu/drm/radeon/radeon_mode.h
index d7a29ce..5c25930 100644
--- a/drivers/gpu/drm/radeon/radeon_mode.h
+++ b/drivers/gpu/drm/radeon/radeon_mode.h
@@ -377,6 +377,8 @@
uint32_t *post_div_p,
int flags);
+extern void radeon_setup_encoder_clones(struct drm_device *dev);
+
struct drm_encoder *radeon_encoder_legacy_lvds_add(struct drm_device *dev, int bios_index);
struct drm_encoder *radeon_encoder_legacy_primary_dac_add(struct drm_device *dev, int bios_index, int with_tv);
struct drm_encoder *radeon_encoder_legacy_tv_dac_add(struct drm_device *dev, int bios_index, int with_tv);