Attach HDR property for Gen9 devices with MCA LSPCON
chips.
v2: Cleaned HDR property attachment logic based on capability
as per Jani Nikula's suggestion.
v3: Fixed the HDR property attachment logic as per the new changes
by Kai-Feng to align with lspcon detection failure on some devices.
Signed-off-by: Uma Shankar <uma.shan...@intel.com>
---
drivers/gpu/drm/i915/display/intel_ddi.c | 20 +++++++++++++++++++-
drivers/gpu/drm/i915/display/intel_lspcon.c | 6 +++++-
drivers/gpu/drm/i915/display/intel_lspcon.h | 1 +
3 files changed, 25 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c
b/drivers/gpu/drm/i915/display/intel_ddi.c
index b4c520348b3b..5ad92e9861af 100644
--- a/drivers/gpu/drm/i915/display/intel_ddi.c
+++ b/drivers/gpu/drm/i915/display/intel_ddi.c
@@ -5111,7 +5111,7 @@ void intel_ddi_init(struct drm_i915_private *dev_priv,
enum port port)
{
struct intel_digital_port *dig_port;
struct intel_encoder *encoder;
- bool init_hdmi, init_dp;
+ bool init_hdmi, init_dp, init_lspcon = false;
enum phy phy = intel_port_to_phy(dev_priv, port);
/*
@@ -5137,6 +5137,7 @@ void intel_ddi_init(struct drm_i915_private *dev_priv,
enum port port)
* is initialized before lspcon.
*/
init_dp = true;
+ init_lspcon = true;
init_hdmi = false;
drm_dbg_kms(&dev_priv->drm, "VBT says port %c has lspcon\n",
port_name(port));
@@ -5256,6 +5257,23 @@ void intel_ddi_init(struct drm_i915_private *dev_priv,
enum port port)
intel_infoframe_init(dig_port);
+ if (init_lspcon) {
+ if (lspcon_init(dig_port))
+ /* TODO: handle hdmi info frame part */
+ drm_dbg_kms(&dev_priv->drm,
+ "LSPCON init success on port %c\n",
+ port_name(port));
+ else
+ /*
+ * LSPCON init failed at driver load, this will be
re-attempted
+ * after hotplug.
+ * Note: There is an issue on some LSPCON
configurations which
+ * triggered the need for this WA.
+ */
+ drm_dbg_kms(&dev_priv->drm, "LSPCON init failed at
driver load on port %c\n",
+ port_name(port));
+ }
+
return;
err:
diff --git a/drivers/gpu/drm/i915/display/intel_lspcon.c
b/drivers/gpu/drm/i915/display/intel_lspcon.c
index 04951cec9625..440d2b3c2212 100644
--- a/drivers/gpu/drm/i915/display/intel_lspcon.c
+++ b/drivers/gpu/drm/i915/display/intel_lspcon.c
@@ -563,7 +563,7 @@ void lspcon_wait_pcon_mode(struct intel_lspcon *lspcon)
lspcon_wait_mode(lspcon, DRM_LSPCON_MODE_PCON);
}
-static bool lspcon_init(struct intel_digital_port *dig_port)
+bool lspcon_init(struct intel_digital_port *dig_port)
{
struct intel_dp *dp = &dig_port->dp;
struct intel_lspcon *lspcon = &dig_port->lspcon;
@@ -588,6 +588,10 @@ static bool lspcon_init(struct intel_digital_port
*dig_port)
}
lspcon_detect_hdr_capability(lspcon);
+ if (lspcon->hdr_supported)
+ drm_object_attach_property(&connector->base,
+
connector->dev->mode_config.hdr_output_metadata_property,
+ 0);
connector->ycbcr_420_allowed = true;
lspcon->active = true;
diff --git a/drivers/gpu/drm/i915/display/intel_lspcon.h
b/drivers/gpu/drm/i915/display/intel_lspcon.h
index 00722f8aec1a..9505e234e2fd 100644
--- a/drivers/gpu/drm/i915/display/intel_lspcon.h
+++ b/drivers/gpu/drm/i915/display/intel_lspcon.h
@@ -15,6 +15,7 @@ struct intel_digital_port;
struct intel_encoder;
struct intel_lspcon;
+bool lspcon_init(struct intel_digital_port *dig_port);
void lspcon_resume(struct intel_digital_port *dig_port);
void lspcon_wait_pcon_mode(struct intel_lspcon *lspcon);
void lspcon_write_infoframe(struct intel_encoder *encoder,
--
2.26.2
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