bool lspcon_init(struct intel_digital_port *intel_dig_port)
{
struct intel_dp *dp = &intel_dig_port->dp;
struct intel_lspcon *lspcon = &intel_dig_port->lspcon;
struct drm_device *dev = intel_dig_port->base.base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
if (!IS_GEN9(dev_priv)) {
DRM_ERROR("LSPCON is supported on GEN9 only\n");
return false;
}
lspcon->active = false;
lspcon->mode = DRM_LSPCON_MODE_INVALID;
if (!lspcon_probe(lspcon)) {
DRM_ERROR("Failed to probe lspcon\n");
return false;
}
/*
* In the SW state machine, lets Put LSPCON in PCON mode only.
* In this way, it will work with both HDMI 1.4 sinks as well as HDMI
* 2.0 sinks.
*/
if (lspcon->active && lspcon->mode != DRM_LSPCON_MODE_PCON) {
if (lspcon_change_mode(lspcon, DRM_LSPCON_MODE_PCON,
true) < 0) {
DRM_ERROR("LSPCON mode change to PCON failed\n");
return false;
}
}
if (!intel_dp_read_dpcd(dp)) {
DRM_ERROR("LSPCON DPCD read failed\n");
return false;
}
lspcon->desc_valid = intel_dp_read_desc(dp);
DRM_DEBUG_KMS("Success: LSPCON init\n");
return true;
}
bool lspcon_init(struct intel_digital_port *intel_dig_port)
{
struct intel_dp *dp = &intel_dig_port->dp;
struct intel_lspcon *lspcon = &intel_dig_port->lspcon;
struct drm_device *dev = intel_dig_port->base.base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
struct drm_connector *connector = &dp->attached_connector->base;
if (!HAS_LSPCON(dev_priv)) {
DRM_ERROR("LSPCON is not supported on this platform\n");
return false;
}
lspcon->active = false;
lspcon->mode = DRM_LSPCON_MODE_INVALID;
if (!lspcon_probe(lspcon)) {
DRM_ERROR("Failed to probe lspcon\n");
return false;
}
if (!intel_dp_read_dpcd(dp)) {
DRM_ERROR("LSPCON DPCD read failed\n");
return false;
}
if (!lspcon_detect_vendor(lspcon)) {
DRM_ERROR("LSPCON vendor detection failed\n");
return false;
}
connector->ycbcr_420_allowed = true;
lspcon->active = true;
DRM_DEBUG_KMS("Success: LSPCON init\n");
return true;
}