drm/i915/hdcp: Use generic names for HDCP helpers and structs

pre MTL we interact with mei interface to talk to
firmware and enable CP but going forward we will talk to gsc cs
because of which we are making all names for HDCP helpers and
structures generic as either mei or gsc cs maybe used.

Change the include/drm/i915_mei_hdcp_interface.h to
include/drm/i915_hdcp_interface.h

Change the i915_hdcp_interface.h header naming convention to
suit generic f/w type.
%s/MEI_/HDCP_
%s/mei_dev/hdcp_dev

Change structure name Accordingly.
%s/i915_hdcp_comp_master/i915_hdcp_master
%s/i915_hdcp_component_ops/i915_hdcp_ops

--v6
-make each patch build individually [Jani]

--v8
-change ME FW to ME/GSC FW [Ankit]
-fix formatting issue [Ankit]

--v9
-fix commit message and header [Uma]

--v10
-rename comp variable [Uma]

Cc: Tomas Winkler <tomas.winkler@intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Uma Shankar <uma.shankar@intel.com>
Cc: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Signed-off-by: Anshuman Gupta <anshuman.gupta@intel.com>
Signed-off-by: Suraj Kandpal <suraj.kandpal@intel.com>
Reviewed-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Reviewed-by: Uma Shankar <uma.shankar@intel.com>
Acked-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Uma Shankar <uma.shankar@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230316092927.668980-3-suraj.kandpal@intel.com

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

@@ -395,7 +395,7 @@ struct intel_display {
 	} gmbus;
 
 	struct {
-		struct i915_hdcp_comp_master *master;
+		struct i915_hdcp_master *master;
 		bool comp_added;
 
 		/* Mutex to protect the above hdcp component related values. */

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

@@ -43,7 +43,7 @@
 #include <drm/drm_rect.h>
 #include <drm/drm_vblank.h>
 #include <drm/drm_vblank_work.h>
-#include <drm/i915_mei_hdcp_interface.h>
+#include <drm/i915_hdcp_interface.h>
 #include <media/cec-notifier.h>
 
 #include "i915_vma.h"

drivers/misc/mei/hdcp/mei_hdcp.c

@@ -23,7 +23,7 @@
 #include <linux/component.h>
 #include <drm/drm_connector.h>
 #include <drm/i915_component.h>
-#include <drm/i915_mei_hdcp_interface.h>
+#include <drm/i915_hdcp_interface.h>
 
 #include "mei_hdcp.h"
 
@@ -57,8 +57,8 @@ mei_hdcp_initiate_session(struct device *dev, struct hdcp_port_data *data,
 				WIRED_CMD_BUF_LEN_INITIATE_HDCP2_SESSION_IN;
 
 	session_init_in.port.integrated_port_type = data->port_type;
-	session_init_in.port.physical_port = (u8)data->fw_ddi;
-	session_init_in.port.attached_transcoder = (u8)data->fw_tc;
+	session_init_in.port.physical_port = (u8)data->hdcp_ddi;
+	session_init_in.port.attached_transcoder = (u8)data->hdcp_transcoder;
 	session_init_in.protocol = data->protocol;
 
 	byte = mei_cldev_send(cldev, (u8 *)&session_init_in,
@@ -127,8 +127,8 @@ mei_hdcp_verify_receiver_cert_prepare_km(struct device *dev,
 				WIRED_CMD_BUF_LEN_VERIFY_RECEIVER_CERT_IN;
 
 	verify_rxcert_in.port.integrated_port_type = data->port_type;
-	verify_rxcert_in.port.physical_port = (u8)data->fw_ddi;
-	verify_rxcert_in.port.attached_transcoder = (u8)data->fw_tc;
+	verify_rxcert_in.port.physical_port = (u8)data->hdcp_ddi;
+	verify_rxcert_in.port.attached_transcoder = (u8)data->hdcp_transcoder;
 
 	verify_rxcert_in.cert_rx = rx_cert->cert_rx;
 	memcpy(verify_rxcert_in.r_rx, &rx_cert->r_rx, HDCP_2_2_RRX_LEN);
@@ -198,8 +198,8 @@ mei_hdcp_verify_hprime(struct device *dev, struct hdcp_port_data *data,
 	send_hprime_in.header.buffer_len = WIRED_CMD_BUF_LEN_AKE_SEND_HPRIME_IN;
 
 	send_hprime_in.port.integrated_port_type = data->port_type;
-	send_hprime_in.port.physical_port = (u8)data->fw_ddi;
-	send_hprime_in.port.attached_transcoder = (u8)data->fw_tc;
+	send_hprime_in.port.physical_port = (u8)data->hdcp_ddi;
+	send_hprime_in.port.attached_transcoder = (u8)data->hdcp_transcoder;
 
 	memcpy(send_hprime_in.h_prime, rx_hprime->h_prime,
 	       HDCP_2_2_H_PRIME_LEN);
@@ -256,8 +256,8 @@ mei_hdcp_store_pairing_info(struct device *dev, struct hdcp_port_data *data,
 					WIRED_CMD_BUF_LEN_SEND_PAIRING_INFO_IN;
 
 	pairing_info_in.port.integrated_port_type = data->port_type;
-	pairing_info_in.port.physical_port = (u8)data->fw_ddi;
-	pairing_info_in.port.attached_transcoder = (u8)data->fw_tc;
+	pairing_info_in.port.physical_port = (u8)data->hdcp_ddi;
+	pairing_info_in.port.attached_transcoder = (u8)data->hdcp_transcoder;
 
 	memcpy(pairing_info_in.e_kh_km, pairing_info->e_kh_km,
 	       HDCP_2_2_E_KH_KM_LEN);
@@ -315,8 +315,8 @@ mei_hdcp_initiate_locality_check(struct device *dev,
 	lc_init_in.header.buffer_len = WIRED_CMD_BUF_LEN_INIT_LOCALITY_CHECK_IN;
 
 	lc_init_in.port.integrated_port_type = data->port_type;
-	lc_init_in.port.physical_port = (u8)data->fw_ddi;
-	lc_init_in.port.attached_transcoder = (u8)data->fw_tc;
+	lc_init_in.port.physical_port = (u8)data->hdcp_ddi;
+	lc_init_in.port.attached_transcoder = (u8)data->hdcp_transcoder;
 
 	byte = mei_cldev_send(cldev, (u8 *)&lc_init_in, sizeof(lc_init_in));
 	if (byte < 0) {
@@ -371,8 +371,8 @@ mei_hdcp_verify_lprime(struct device *dev, struct hdcp_port_data *data,
 					WIRED_CMD_BUF_LEN_VALIDATE_LOCALITY_IN;
 
 	verify_lprime_in.port.integrated_port_type = data->port_type;
-	verify_lprime_in.port.physical_port = (u8)data->fw_ddi;
-	verify_lprime_in.port.attached_transcoder = (u8)data->fw_tc;
+	verify_lprime_in.port.physical_port = (u8)data->hdcp_ddi;
+	verify_lprime_in.port.attached_transcoder = (u8)data->hdcp_transcoder;
 
 	memcpy(verify_lprime_in.l_prime, rx_lprime->l_prime,
 	       HDCP_2_2_L_PRIME_LEN);
@@ -429,8 +429,8 @@ static int mei_hdcp_get_session_key(struct device *dev,
 	get_skey_in.header.buffer_len = WIRED_CMD_BUF_LEN_GET_SESSION_KEY_IN;
 
 	get_skey_in.port.integrated_port_type = data->port_type;
-	get_skey_in.port.physical_port = (u8)data->fw_ddi;
-	get_skey_in.port.attached_transcoder = (u8)data->fw_tc;
+	get_skey_in.port.physical_port = (u8)data->hdcp_ddi;
+	get_skey_in.port.attached_transcoder = (u8)data->hdcp_transcoder;
 
 	byte = mei_cldev_send(cldev, (u8 *)&get_skey_in, sizeof(get_skey_in));
 	if (byte < 0) {
@@ -494,8 +494,8 @@ mei_hdcp_repeater_check_flow_prepare_ack(struct device *dev,
 					WIRED_CMD_BUF_LEN_VERIFY_REPEATER_IN;
 
 	verify_repeater_in.port.integrated_port_type = data->port_type;
-	verify_repeater_in.port.physical_port = (u8)data->fw_ddi;
-	verify_repeater_in.port.attached_transcoder = (u8)data->fw_tc;
+	verify_repeater_in.port.physical_port = (u8)data->hdcp_ddi;
+	verify_repeater_in.port.attached_transcoder = (u8)data->hdcp_transcoder;
 
 	memcpy(verify_repeater_in.rx_info, rep_topology->rx_info,
 	       HDCP_2_2_RXINFO_LEN);
@@ -572,8 +572,8 @@ static int mei_hdcp_verify_mprime(struct device *dev,
 	verify_mprime_in->header.buffer_len = cmd_size  - sizeof(verify_mprime_in->header);
 
 	verify_mprime_in->port.integrated_port_type = data->port_type;
-	verify_mprime_in->port.physical_port = (u8)data->fw_ddi;
-	verify_mprime_in->port.attached_transcoder = (u8)data->fw_tc;
+	verify_mprime_in->port.physical_port = (u8)data->hdcp_ddi;
+	verify_mprime_in->port.attached_transcoder = (u8)data->hdcp_transcoder;
 
 	memcpy(verify_mprime_in->m_prime, stream_ready->m_prime, HDCP_2_2_MPRIME_LEN);
 	drm_hdcp_cpu_to_be24(verify_mprime_in->seq_num_m, data->seq_num_m);
@@ -634,8 +634,8 @@ static int mei_hdcp_enable_authentication(struct device *dev,
 	enable_auth_in.header.buffer_len = WIRED_CMD_BUF_LEN_ENABLE_AUTH_IN;
 
 	enable_auth_in.port.integrated_port_type = data->port_type;
-	enable_auth_in.port.physical_port = (u8)data->fw_ddi;
-	enable_auth_in.port.attached_transcoder = (u8)data->fw_tc;
+	enable_auth_in.port.physical_port = (u8)data->hdcp_ddi;
+	enable_auth_in.port.attached_transcoder = (u8)data->hdcp_transcoder;
 	enable_auth_in.stream_type = data->streams[0].stream_type;
 
 	byte = mei_cldev_send(cldev, (u8 *)&enable_auth_in,
@@ -689,8 +689,8 @@ mei_hdcp_close_session(struct device *dev, struct hdcp_port_data *data)
 				WIRED_CMD_BUF_LEN_CLOSE_SESSION_IN;
 
 	session_close_in.port.integrated_port_type = data->port_type;
-	session_close_in.port.physical_port = (u8)data->fw_ddi;
-	session_close_in.port.attached_transcoder = (u8)data->fw_tc;
+	session_close_in.port.physical_port = (u8)data->hdcp_ddi;
+	session_close_in.port.attached_transcoder = (u8)data->hdcp_transcoder;
 
 	byte = mei_cldev_send(cldev, (u8 *)&session_close_in,
 			      sizeof(session_close_in));
@@ -715,7 +715,7 @@ mei_hdcp_close_session(struct device *dev, struct hdcp_port_data *data)
 	return 0;
 }
 
-static const struct i915_hdcp_component_ops mei_hdcp_ops = {
+static const struct i915_hdcp_ops mei_hdcp_ops = {
 	.owner = THIS_MODULE,
 	.initiate_hdcp2_session = mei_hdcp_initiate_session,
 	.verify_receiver_cert_prepare_km =
@@ -735,13 +735,12 @@ static const struct i915_hdcp_component_ops mei_hdcp_ops = {
 static int mei_component_master_bind(struct device *dev)
 {
 	struct mei_cl_device *cldev = to_mei_cl_device(dev);
-	struct i915_hdcp_comp_master *comp_master =
-						mei_cldev_get_drvdata(cldev);
+	struct i915_hdcp_master *comp_master = mei_cldev_get_drvdata(cldev);
 	int ret;
 
 	dev_dbg(dev, "%s\n", __func__);
 	comp_master->ops = &mei_hdcp_ops;
-	comp_master->mei_dev = dev;
+	comp_master->hdcp_dev = dev;
 	ret = component_bind_all(dev, comp_master);
 	if (ret < 0)
 		return ret;
@@ -752,8 +751,7 @@ static int mei_component_master_bind(struct device *dev)
 static void mei_component_master_unbind(struct device *dev)
 {
 	struct mei_cl_device *cldev = to_mei_cl_device(dev);
-	struct i915_hdcp_comp_master *comp_master =
-						mei_cldev_get_drvdata(cldev);
+	struct i915_hdcp_master *comp_master = mei_cldev_get_drvdata(cldev);
 
 	dev_dbg(dev, "%s\n", __func__);
 	component_unbind_all(dev, comp_master);
@@ -801,7 +799,7 @@ static int mei_hdcp_component_match(struct device *dev, int subcomponent,
 static int mei_hdcp_probe(struct mei_cl_device *cldev,
 			  const struct mei_cl_device_id *id)
 {
-	struct i915_hdcp_comp_master *comp_master;
+	struct i915_hdcp_master *comp_master;
 	struct component_match *master_match;
 	int ret;
 
@@ -846,8 +844,7 @@ static int mei_hdcp_probe(struct mei_cl_device *cldev,
 
 static void mei_hdcp_remove(struct mei_cl_device *cldev)
 {
-	struct i915_hdcp_comp_master *comp_master =
-						mei_cldev_get_drvdata(cldev);
+	struct i915_hdcp_master *comp_master = mei_cldev_get_drvdata(cldev);
 	int ret;
 
 	component_master_del(&cldev->dev, &mei_component_master_ops);

include/drm/i915_mei_hdcp_interface.h → include/drm/i915_hdcp_interface.h

@@ -6,15 +6,15 @@
  * Ramalingam C <ramalingam.c@intel.com>
  */
 
-#ifndef _I915_MEI_HDCP_INTERFACE_H_
-#define _I915_MEI_HDCP_INTERFACE_H_
+#ifndef _I915_HDCP_INTERFACE_H_
+#define _I915_HDCP_INTERFACE_H_
 
 #include <linux/mutex.h>
 #include <linux/device.h>
 #include <drm/display/drm_hdcp.h>
 
 /**
- * enum hdcp_port_type - HDCP port implementation type defined by ME FW
+ * enum hdcp_port_type - HDCP port implementation type defined by ME/GSC FW
  * @HDCP_PORT_TYPE_INVALID: Invalid hdcp port type
  * @HDCP_PORT_TYPE_INTEGRATED: In-Host HDCP2.x port
  * @HDCP_PORT_TYPE_LSPCON: HDCP2.2 discrete wired Tx port with LSPCON
@@ -41,46 +41,46 @@ enum hdcp_wired_protocol {
 	HDCP_PROTOCOL_DP
 };
 
-enum mei_fw_ddi {
-	MEI_DDI_INVALID_PORT = 0x0,
+enum hdcp_ddi {
+	HDCP_DDI_INVALID_PORT = 0x0,
 
-	MEI_DDI_B = 1,
-	MEI_DDI_C,
-	MEI_DDI_D,
-	MEI_DDI_E,
-	MEI_DDI_F,
-	MEI_DDI_A = 7,
-	MEI_DDI_RANGE_END = MEI_DDI_A,
+	HDCP_DDI_B = 1,
+	HDCP_DDI_C,
+	HDCP_DDI_D,
+	HDCP_DDI_E,
+	HDCP_DDI_F,
+	HDCP_DDI_A = 7,
+	HDCP_DDI_RANGE_END = HDCP_DDI_A,
 };
 
 /**
- * enum mei_fw_tc - ME Firmware defined index for transcoders
- * @MEI_INVALID_TRANSCODER: Index for Invalid transcoder
- * @MEI_TRANSCODER_EDP: Index for EDP Transcoder
- * @MEI_TRANSCODER_DSI0: Index for DSI0 Transcoder
- * @MEI_TRANSCODER_DSI1: Index for DSI1 Transcoder
- * @MEI_TRANSCODER_A: Index for Transcoder A
- * @MEI_TRANSCODER_B: Index for Transcoder B
- * @MEI_TRANSCODER_C: Index for Transcoder C
- * @MEI_TRANSCODER_D: Index for Transcoder D
+ * enum hdcp_tc - ME/GSC Firmware defined index for transcoders
+ * @HDCP_INVALID_TRANSCODER: Index for Invalid transcoder
+ * @HDCP_TRANSCODER_EDP: Index for EDP Transcoder
+ * @HDCP_TRANSCODER_DSI0: Index for DSI0 Transcoder
+ * @HDCP_TRANSCODER_DSI1: Index for DSI1 Transcoder
+ * @HDCP_TRANSCODER_A: Index for Transcoder A
+ * @HDCP_TRANSCODER_B: Index for Transcoder B
+ * @HDCP_TRANSCODER_C: Index for Transcoder C
+ * @HDCP_TRANSCODER_D: Index for Transcoder D
  */
-enum mei_fw_tc {
-	MEI_INVALID_TRANSCODER = 0x00,
-	MEI_TRANSCODER_EDP,
-	MEI_TRANSCODER_DSI0,
-	MEI_TRANSCODER_DSI1,
-	MEI_TRANSCODER_A = 0x10,
-	MEI_TRANSCODER_B,
-	MEI_TRANSCODER_C,
-	MEI_TRANSCODER_D
+enum hdcp_transcoder {
+	HDCP_INVALID_TRANSCODER = 0x00,
+	HDCP_TRANSCODER_EDP,
+	HDCP_TRANSCODER_DSI0,
+	HDCP_TRANSCODER_DSI1,
+	HDCP_TRANSCODER_A = 0x10,
+	HDCP_TRANSCODER_B,
+	HDCP_TRANSCODER_C,
+	HDCP_TRANSCODER_D
 };
 
 /**
  * struct hdcp_port_data - intel specific HDCP port data
- * @fw_ddi: ddi index as per ME FW
- * @fw_tc: transcoder index as per ME FW
- * @port_type: HDCP port type as per ME FW classification
- * @protocol: HDCP adaptation as per ME FW
+ * @hdcp_ddi: ddi index as per ME/GSC FW
+ * @hdcp_transcoder: transcoder index as per ME/GSC FW
+ * @port_type: HDCP port type as per ME/GSC FW classification
+ * @protocol: HDCP adaptation as per ME/GSC FW
  * @k: No of streams transmitted on a port. Only on DP MST this is != 1
  * @seq_num_m: Count of RepeaterAuth_Stream_Manage msg propagated.
  *	       Initialized to 0 on AKE_INIT. Incremented after every successful
@@ -90,8 +90,8 @@ enum mei_fw_tc {
  *	     streams
  */
 struct hdcp_port_data {
-	enum mei_fw_ddi fw_ddi;
-	enum mei_fw_tc fw_tc;
+	enum hdcp_ddi hdcp_ddi;
+	enum hdcp_transcoder hdcp_transcoder;
 	u8 port_type;
 	u8 protocol;
 	u16 k;
@@ -100,7 +100,7 @@ struct hdcp_port_data {
 };
 
 /**
- * struct i915_hdcp_component_ops- ops for HDCP2.2 services.
+ * struct i915_hdcp_ops- ops for HDCP2.2 services.
  * @owner: Module providing the ops
  * @initiate_hdcp2_session: Initiate a Wired HDCP2.2 Tx Session.
  *			    And Prepare AKE_Init.
@@ -119,9 +119,9 @@ struct hdcp_port_data {
  * @close_hdcp_session: Close the Wired HDCP Tx session per port.
  *			This also disables the authenticated state of the port.
  */
-struct i915_hdcp_component_ops {
+struct i915_hdcp_ops {
 	/**
-	 * @owner: mei_hdcp module
+	 * @owner: hdcp module
 	 */
 	struct module *owner;
 
@@ -168,17 +168,17 @@ struct i915_hdcp_component_ops {
 };
 
 /**
- * struct i915_hdcp_component_master - Used for communication between i915
- * and mei_hdcp drivers for the HDCP2.2 services
- * @mei_dev: device that provide the HDCP2.2 service from MEI Bus.
- * @hdcp_ops: Ops implemented by mei_hdcp driver, used by i915 driver.
+ * struct i915_hdcp_master - Used for communication between i915
+ * and hdcp drivers for the HDCP2.2 services
+ * @hdcp_dev: device that provide the HDCP2.2 service from MEI Bus.
+ * @hdcp_ops: Ops implemented by hdcp driver or intel_hdcp_gsc , used by i915 driver.
  */
-struct i915_hdcp_comp_master {
-	struct device *mei_dev;
-	const struct i915_hdcp_component_ops *ops;
+struct i915_hdcp_master {
+	struct device *hdcp_dev;
+	const struct i915_hdcp_ops *ops;
 
 	/* To protect the above members. */
 	struct mutex mutex;
 };
 
-#endif /* _I915_MEI_HDCP_INTERFACE_H_ */
+#endif /* _I915_HDCP_INTERFACE_H_ */