@@ -2325,7 +2325,7 @@ void intel_ddi_init(struct drm_device *dev, enum port port)
struct intel_digital_port *intel_dig_port;
struct intel_encoder *intel_encoder;
struct drm_encoder *encoder;
- bool init_hdmi, init_dp;
+ bool init_hdmi, init_dp, init_lspcon = false;
int max_lanes;
if (I915_READ(DDI_BUF_CTL(PORT_A)) & DDI_A_4_LANES) {
@@ -2357,6 +2357,19 @@ void intel_ddi_init(struct drm_device *dev, enum port port)
init_hdmi = (dev_priv->vbt.ddi_port_info[port].supports_dvi ||
dev_priv->vbt.ddi_port_info[port].supports_hdmi);
init_dp = dev_priv->vbt.ddi_port_info[port].supports_dp;
+
+ if (intel_bios_is_lspcon_present(dev_priv, port)) {
+ /*
+ * Lspcon device needs to be driven with DP connector
+ * with special detection sequence. So make sure DP
+ * is initialized before lspcon.
+ */
+ init_dp = true;
+ init_lspcon = true;
+ init_hdmi = false;
+ DRM_DEBUG_KMS("VBT says port %c has lspcon\n", port_name(port));
+ }
+
if (!init_dp && !init_hdmi) {
DRM_DEBUG_KMS("VBT says port %c is not DVI/HDMI/DP compatible, respect it\n",
port_name(port));
@@ -2432,6 +2445,20 @@ void intel_ddi_init(struct drm_device *dev, enum port port)
goto err;
}
+ if (init_lspcon) {
+ if (lspcon_init(intel_dig_port))
+ /* TODO: handle hdmi info frame part */
+ DRM_DEBUG_KMS("LSPCON init success on port %c\n",
+ port_name(port));
+ else
+ /*
+ * LSPCON init faied, but DP init was success, so
+ * lets try to drive as DP++ port.
+ */
+ DRM_ERROR("LSPCON init failed on port %c\n",
+ port_name(port));
+ }
+
return;
err:
This patch adds initialization code for lspcon. What we are doing here is: - Check if lspcon is configured in VBT for this port - If lspcon is configured, initialize it and configure it as DP port. V2: Addressed Ville's review comments: - Not adding AVI IF functions for LSPCON display now. This part will be added once the dig_port level AVI-IF series gets merged. V3: Rebase V4: Rebase Signed-off-by: Shashank Sharma <shashank.sharma@intel.com> Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com> --- drivers/gpu/drm/i915/intel_ddi.c | 29 ++++++++++++++++++++++++++++- 1 file changed, 28 insertions(+), 1 deletion(-)