drm/i915/hdcp: Move HDCP enc status timeout to header

DP MST stream encryption status requires time of a link frame
in order to change its status, but as there were some HDCP
encryption timeout observed earlier, it is safer to use
ENCRYPT_STATUS_CHANGE_TIMEOUT_MS timeout for stream status too,
it requires to move the macro to a header.
It will be used by both HDCP{1.x,2.x} stream status timeout.

Related: 'commit 7e90e8d0 ("drm/i915: Increase timeout for Encrypt
status change")'
Cc: Ramalingam C <ramalingam.c@intel.com>
Reviewed-by: Uma Shankar <uma.shankar@intel.com>
Reviewed-by: Ramalingam C <ramalingam.c@intel.com>
Tested-by: Karthik B S <karthik.b.s@intel.com>
Signed-off-by: Anshuman Gupta <anshuman.gupta@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210111081120.28417-7-anshuman.gupta@intel.com

drivers/gpu/drm/i915/display/intel_hdcp.c

@@ -23,7 +23,6 @@
 #include "intel_connector.h"
 
 #define KEY_LOAD_TRIES	5
-#define ENCRYPT_STATUS_CHANGE_TIMEOUT_MS	50
 #define HDCP2_LC_RETRY_CNT			3
 
 static
@@ -762,7 +761,7 @@ static int intel_hdcp_auth(struct intel_connector *connector)
 	if (intel_de_wait_for_set(dev_priv,
 				  HDCP_STATUS(dev_priv, cpu_transcoder, port),
 				  HDCP_STATUS_ENC,
-				  ENCRYPT_STATUS_CHANGE_TIMEOUT_MS)) {
+				  HDCP_ENCRYPT_STATUS_CHANGE_TIMEOUT_MS)) {
 		drm_err(&dev_priv->drm, "Timed out waiting for encryption\n");
 		return -ETIMEDOUT;
 	}
@@ -809,7 +808,7 @@ static int _intel_hdcp_disable(struct intel_connector *connector)
 	intel_de_write(dev_priv, HDCP_CONF(dev_priv, cpu_transcoder, port), 0);
 	if (intel_de_wait_for_clear(dev_priv,
 				    HDCP_STATUS(dev_priv, cpu_transcoder, port),
-				    ~0, ENCRYPT_STATUS_CHANGE_TIMEOUT_MS)) {
+				    ~0, HDCP_ENCRYPT_STATUS_CHANGE_TIMEOUT_MS)) {
 		drm_err(&dev_priv->drm,
 			"Failed to disable HDCP, timeout clearing status\n");
 		return -ETIMEDOUT;
@@ -1641,7 +1640,7 @@ static int hdcp2_enable_encryption(struct intel_connector *connector)
 				    HDCP2_STATUS(dev_priv, cpu_transcoder,
 						 port),
 				    LINK_ENCRYPTION_STATUS,
-				    ENCRYPT_STATUS_CHANGE_TIMEOUT_MS);
+				    HDCP_ENCRYPT_STATUS_CHANGE_TIMEOUT_MS);
 
 	return ret;
 }
@@ -1665,7 +1664,7 @@ static int hdcp2_disable_encryption(struct intel_connector *connector)
 				      HDCP2_STATUS(dev_priv, cpu_transcoder,
 						   port),
 				      LINK_ENCRYPTION_STATUS,
-				      ENCRYPT_STATUS_CHANGE_TIMEOUT_MS);
+				      HDCP_ENCRYPT_STATUS_CHANGE_TIMEOUT_MS);
 	if (ret == -ETIMEDOUT)
 		drm_dbg_kms(&dev_priv->drm, "Disable Encryption Timedout");
 

drivers/gpu/drm/i915/display/intel_hdcp.h

@@ -8,6 +8,8 @@
 
 #include <linux/types.h>
 
+#define HDCP_ENCRYPT_STATUS_CHANGE_TIMEOUT_MS	50
+
 struct drm_connector;
 struct drm_connector_state;
 struct drm_i915_private;