From: Sean Paul <seanp...@chromium.org>
This is a bit of housecleaning for a future patch. Instead of sprinkling
hdcp->value assignments and prop_work scheduling everywhere, introduce a
function to do it for us.
Signed-off-by: Sean Paul <seanp...@chromium.org>
---
drivers/gpu/drm/i915/display/intel_hdcp.c | 67 ++++++++++++++++-------
1 file changed, 46 insertions(+), 21 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_hdcp.c
b/drivers/gpu/drm/i915/display/intel_hdcp.c
index 0966a8ec47d2..f34763fa5b42 100644
--- a/drivers/gpu/drm/i915/display/intel_hdcp.c
+++ b/drivers/gpu/drm/i915/display/intel_hdcp.c
@@ -846,6 +846,21 @@ struct intel_connector *intel_hdcp_to_connector(struct
intel_hdcp *hdcp)
return container_of(hdcp, struct intel_connector, hdcp);
}
+static void intel_hdcp_update_value(struct intel_connector *connector,
+ u64 value, bool update_property)
+{
+ struct intel_hdcp *hdcp = &connector->hdcp;
+
+ WARN_ON(!mutex_is_locked(&hdcp->mutex));
+
+ if (hdcp->value == value)
+ return;
+
+ hdcp->value = value;
+ if (update_property)
+ schedule_work(&hdcp->prop_work);
+}
+
/* Implements Part 3 of the HDCP authorization procedure */
static int intel_hdcp_check_link(struct intel_connector *connector)
{
@@ -872,15 +887,16 @@ static int intel_hdcp_check_link(struct intel_connector
*connector)
I915_READ(HDCP_STATUS(dev_priv, cpu_transcoder,
port)));
ret = -ENXIO;
- hdcp->value = DRM_MODE_CONTENT_PROTECTION_DESIRED;
- schedule_work(&hdcp->prop_work);
+ intel_hdcp_update_value(connector,
+ DRM_MODE_CONTENT_PROTECTION_DESIRED,
+ true);
goto out;
}
if (hdcp->shim->check_link(intel_dig_port)) {
if (hdcp->value != DRM_MODE_CONTENT_PROTECTION_UNDESIRED) {
- hdcp->value = DRM_MODE_CONTENT_PROTECTION_ENABLED;
- schedule_work(&hdcp->prop_work);
+ intel_hdcp_update_value(connector,
+ DRM_MODE_CONTENT_PROTECTION_ENABLED, true);
}
goto out;
}
@@ -891,16 +907,18 @@ static int intel_hdcp_check_link(struct intel_connector
*connector)
ret = _intel_hdcp_disable(connector);
if (ret) {
DRM_ERROR("Failed to disable hdcp (%d)\n", ret);
- hdcp->value = DRM_MODE_CONTENT_PROTECTION_DESIRED;
- schedule_work(&hdcp->prop_work);
+ intel_hdcp_update_value(connector,
+ DRM_MODE_CONTENT_PROTECTION_DESIRED,
+ true);
goto out;
}
ret = _intel_hdcp_enable(connector);
if (ret) {
DRM_ERROR("Failed to enable hdcp (%d)\n", ret);
- hdcp->value = DRM_MODE_CONTENT_PROTECTION_DESIRED;
- schedule_work(&hdcp->prop_work);
+ intel_hdcp_update_value(connector,
+ DRM_MODE_CONTENT_PROTECTION_DESIRED,
+ true);
goto out;
}
@@ -1706,16 +1724,18 @@ static int intel_hdcp2_check_link(struct
intel_connector *connector)
I915_READ(HDCP2_STATUS(dev_priv, cpu_transcoder,
port)));
ret = -ENXIO;
- hdcp->value = DRM_MODE_CONTENT_PROTECTION_DESIRED;
- schedule_work(&hdcp->prop_work);
+ intel_hdcp_update_value(connector,
+ DRM_MODE_CONTENT_PROTECTION_DESIRED,
+ true);
goto out;
}
ret = hdcp->shim->check_2_2_link(intel_dig_port);
if (ret == HDCP_LINK_PROTECTED) {
if (hdcp->value != DRM_MODE_CONTENT_PROTECTION_UNDESIRED) {
- hdcp->value = DRM_MODE_CONTENT_PROTECTION_ENABLED;
- schedule_work(&hdcp->prop_work);
+ intel_hdcp_update_value(connector,
+ DRM_MODE_CONTENT_PROTECTION_ENABLED,
+ true);
}
goto out;
}
@@ -1727,8 +1747,9 @@ static int intel_hdcp2_check_link(struct intel_connector
*connector)
DRM_DEBUG_KMS("HDCP2.2 Downstream topology change\n");
ret = hdcp2_authenticate_repeater_topology(connector);
if (!ret) {
- hdcp->value = DRM_MODE_CONTENT_PROTECTION_ENABLED;
- schedule_work(&hdcp->prop_work);
+ intel_hdcp_update_value(connector,
+ DRM_MODE_CONTENT_PROTECTION_ENABLED,
+ true);
goto out;
}
DRM_DEBUG_KMS("[%s:%d] Repeater topology auth failed.(%d)\n",
@@ -1743,8 +1764,8 @@ static int intel_hdcp2_check_link(struct intel_connector
*connector)
if (ret) {
DRM_ERROR("[%s:%d] Failed to disable hdcp2.2 (%d)\n",
connector->base.name, connector->base.base.id, ret);
- hdcp->value = DRM_MODE_CONTENT_PROTECTION_DESIRED;
- schedule_work(&hdcp->prop_work);
+ intel_hdcp_update_value(connector,
+ DRM_MODE_CONTENT_PROTECTION_DESIRED, true);
goto out;
}
@@ -1753,8 +1774,9 @@ static int intel_hdcp2_check_link(struct intel_connector
*connector)
DRM_DEBUG_KMS("[%s:%d] Failed to enable hdcp2.2 (%d)\n",
connector->base.name, connector->base.base.id,
ret);
- hdcp->value = DRM_MODE_CONTENT_PROTECTION_DESIRED;
- schedule_work(&hdcp->prop_work);
+ intel_hdcp_update_value(connector,
+ DRM_MODE_CONTENT_PROTECTION_DESIRED,
+ true);
goto out;
}
@@ -2004,8 +2026,9 @@ int intel_hdcp_enable(struct intel_connector *connector,
u8 content_type)
if (!ret) {
schedule_delayed_work(&hdcp->check_work, check_link_interval);
- hdcp->value = DRM_MODE_CONTENT_PROTECTION_ENABLED;
- schedule_work(&hdcp->prop_work);
+ intel_hdcp_update_value(connector,
+ DRM_MODE_CONTENT_PROTECTION_ENABLED,
+ true);
}
mutex_unlock(&hdcp->mutex);
@@ -2023,7 +2046,9 @@ int intel_hdcp_disable(struct intel_connector *connector)
mutex_lock(&hdcp->mutex);
if (hdcp->value != DRM_MODE_CONTENT_PROTECTION_UNDESIRED) {
- hdcp->value = DRM_MODE_CONTENT_PROTECTION_UNDESIRED;
+ intel_hdcp_update_value(connector,
+ DRM_MODE_CONTENT_PROTECTION_UNDESIRED,
+ false);
if (hdcp->hdcp2_encrypted)
ret = _intel_hdcp2_disable(connector);
else if (hdcp->hdcp_encrypted)
--
Sean Paul, Software Engineer, Google / Chromium OS
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