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-rw-r--r--drivers/gpu/drm/i915/display/intel_ddi.c3
-rw-r--r--drivers/gpu/drm/i915/display/intel_display_types.h5
-rw-r--r--drivers/gpu/drm/i915/display/intel_dp.c2
-rw-r--r--drivers/gpu/drm/i915/display/intel_hdcp.c33
-rw-r--r--drivers/gpu/drm/i915/display/intel_hdmi.c2
5 files changed, 45 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c
index f186214150e2..81af56409a22 100644
--- a/drivers/gpu/drm/i915/display/intel_ddi.c
+++ b/drivers/gpu/drm/i915/display/intel_ddi.c
@@ -5026,6 +5026,9 @@ void intel_ddi_init(struct drm_i915_private *dev_priv, enum port port)
drm_encoder_init(&dev_priv->drm, &encoder->base, &intel_ddi_funcs,
DRM_MODE_ENCODER_TMDS, "DDI %c", port_name(port));
+ mutex_init(&dig_port->hdcp_mutex);
+ dig_port->num_hdcp_streams = 0;
+
encoder->hotplug = intel_ddi_hotplug;
encoder->compute_output_type = intel_ddi_compute_output_type;
encoder->compute_config = intel_ddi_compute_config;
diff --git a/drivers/gpu/drm/i915/display/intel_display_types.h b/drivers/gpu/drm/i915/display/intel_display_types.h
index d30ec7728a99..b6d0ad171432 100644
--- a/drivers/gpu/drm/i915/display/intel_display_types.h
+++ b/drivers/gpu/drm/i915/display/intel_display_types.h
@@ -1416,6 +1416,11 @@ struct intel_digital_port {
enum phy_fia tc_phy_fia;
u8 tc_phy_fia_idx;
+ /* protects num_hdcp_streams reference count */
+ struct mutex hdcp_mutex;
+ /* the number of pipes using HDCP signalling out of this port */
+ unsigned int num_hdcp_streams;
+
void (*write_infoframe)(struct intel_encoder *encoder,
const struct intel_crtc_state *crtc_state,
unsigned int type,
diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
index c771fa72c2fb..a8f00788217a 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.c
+++ b/drivers/gpu/drm/i915/display/intel_dp.c
@@ -8342,6 +8342,8 @@ bool intel_dp_init(struct drm_i915_private *dev_priv,
intel_encoder = &dig_port->base;
encoder = &intel_encoder->base;
+ mutex_init(&dig_port->hdcp_mutex);
+
if (drm_encoder_init(&dev_priv->drm, &intel_encoder->base,
&intel_dp_enc_funcs, DRM_MODE_ENCODER_TMDS,
"DP %c", port_name(port)))
diff --git a/drivers/gpu/drm/i915/display/intel_hdcp.c b/drivers/gpu/drm/i915/display/intel_hdcp.c
index f4939f63d8dd..7bc8c06f3132 100644
--- a/drivers/gpu/drm/i915/display/intel_hdcp.c
+++ b/drivers/gpu/drm/i915/display/intel_hdcp.c
@@ -792,6 +792,19 @@ static int _intel_hdcp_disable(struct intel_connector *connector)
drm_dbg_kms(&dev_priv->drm, "[%s:%d] HDCP is being disabled...\n",
connector->base.name, connector->base.base.id);
+ /*
+ * If there are other connectors on this port using HDCP, don't disable
+ * it. Instead, toggle the HDCP signalling off on that particular
+ * connector/pipe and exit.
+ */
+ if (dig_port->num_hdcp_streams > 0) {
+ ret = hdcp->shim->toggle_signalling(dig_port,
+ cpu_transcoder, false);
+ if (ret)
+ DRM_ERROR("Failed to disable HDCP signalling\n");
+ return ret;
+ }
+
hdcp->hdcp_encrypted = false;
intel_de_write(dev_priv, HDCP_CONF(dev_priv, cpu_transcoder, port), 0);
if (intel_de_wait_for_clear(dev_priv,
@@ -870,6 +883,8 @@ static struct intel_connector *intel_hdcp_to_connector(struct intel_hdcp *hdcp)
static void intel_hdcp_update_value(struct intel_connector *connector,
u64 value, bool update_property)
{
+ struct drm_device *dev = connector->base.dev;
+ struct intel_digital_port *dig_port = intel_attached_dig_port(connector);
struct intel_hdcp *hdcp = &connector->hdcp;
drm_WARN_ON(connector->base.dev, !mutex_is_locked(&hdcp->mutex));
@@ -877,6 +892,15 @@ static void intel_hdcp_update_value(struct intel_connector *connector,
if (hdcp->value == value)
return;
+ drm_WARN_ON(dev, !mutex_is_locked(&dig_port->hdcp_mutex));
+
+ if (hdcp->value == DRM_MODE_CONTENT_PROTECTION_ENABLED) {
+ if (!drm_WARN_ON(dev, dig_port->num_hdcp_streams == 0))
+ dig_port->num_hdcp_streams--;
+ } else if (value == DRM_MODE_CONTENT_PROTECTION_ENABLED) {
+ dig_port->num_hdcp_streams++;
+ }
+
hdcp->value = value;
if (update_property) {
drm_connector_get(&connector->base);
@@ -895,6 +919,8 @@ static int intel_hdcp_check_link(struct intel_connector *connector)
int ret = 0;
mutex_lock(&hdcp->mutex);
+ mutex_lock(&dig_port->hdcp_mutex);
+
cpu_transcoder = hdcp->cpu_transcoder;
/* Check_link valid only when HDCP1.4 is enabled */
@@ -948,6 +974,7 @@ static int intel_hdcp_check_link(struct intel_connector *connector)
}
out:
+ mutex_unlock(&dig_port->hdcp_mutex);
mutex_unlock(&hdcp->mutex);
return ret;
}
@@ -2047,6 +2074,7 @@ int intel_hdcp_enable(struct intel_connector *connector,
enum transcoder cpu_transcoder, u8 content_type)
{
struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
+ struct intel_digital_port *dig_port = intel_attached_dig_port(connector);
struct intel_hdcp *hdcp = &connector->hdcp;
unsigned long check_link_interval = DRM_HDCP_CHECK_PERIOD_MS;
int ret = -EINVAL;
@@ -2055,6 +2083,7 @@ int intel_hdcp_enable(struct intel_connector *connector,
return -ENOENT;
mutex_lock(&hdcp->mutex);
+ mutex_lock(&dig_port->hdcp_mutex);
drm_WARN_ON(&dev_priv->drm,
hdcp->value == DRM_MODE_CONTENT_PROTECTION_ENABLED);
hdcp->content_type = content_type;
@@ -2089,12 +2118,14 @@ int intel_hdcp_enable(struct intel_connector *connector,
true);
}
+ mutex_unlock(&dig_port->hdcp_mutex);
mutex_unlock(&hdcp->mutex);
return ret;
}
int intel_hdcp_disable(struct intel_connector *connector)
{
+ struct intel_digital_port *dig_port = intel_attached_dig_port(connector);
struct intel_hdcp *hdcp = &connector->hdcp;
int ret = 0;
@@ -2102,6 +2133,7 @@ int intel_hdcp_disable(struct intel_connector *connector)
return -ENOENT;
mutex_lock(&hdcp->mutex);
+ mutex_lock(&dig_port->hdcp_mutex);
if (hdcp->value == DRM_MODE_CONTENT_PROTECTION_UNDESIRED)
goto out;
@@ -2114,6 +2146,7 @@ int intel_hdcp_disable(struct intel_connector *connector)
ret = _intel_hdcp_disable(connector);
out:
+ mutex_unlock(&dig_port->hdcp_mutex);
mutex_unlock(&hdcp->mutex);
cancel_delayed_work_sync(&hdcp->check_work);
return ret;
diff --git a/drivers/gpu/drm/i915/display/intel_hdmi.c b/drivers/gpu/drm/i915/display/intel_hdmi.c
index 3966fcfb7d3a..9c3b1ae2cd2b 100644
--- a/drivers/gpu/drm/i915/display/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/display/intel_hdmi.c
@@ -3341,6 +3341,8 @@ void intel_hdmi_init(struct drm_i915_private *dev_priv,
intel_encoder = &dig_port->base;
+ mutex_init(&dig_port->hdcp_mutex);
+
drm_encoder_init(&dev_priv->drm, &intel_encoder->base,
&intel_hdmi_enc_funcs, DRM_MODE_ENCODER_TMDS,
"HDMI %c", port_name(port));
generated by cgit v1.2.3 (git 2.39.0) at 2025-08-13 08:14:02 +0300