[PATCH v7 0/6] drm/i915: Enable HDCP 1.4 and 2.2 on Gen12+

[PATCH v7 0/6] drm/i915: Enable HDCP 1.4 and 2.2 on Gen12+

[Ramalingam C]

Enabling the HDCP1.4 and 2.2 on TGL by supporting the HW block movement
from DDI into transcoder.

v7:
  port, transcoder definitions are kept within I915.
  corresponding changes in i915-mei interface.

Ramalingam C (6):
  drm/i915: mei_hdcp: I915 sends ddi index as per ME FW
  drm: port definition is moved back into i915 header
  drm: I915 mei interface is extended for transcoder info
  misc/mei/hdcp: transcoder index in port info
  drm/i915/hdcp: updating the transcoder of the hdcp port
  drm/i915/hdcp: Enable HDCP 1.4 and 2.2 on Gen12+

 drivers/gpu/drm/i915/display/intel_bios.h     |   2 +
 drivers/gpu/drm/i915/display/intel_display.h  |  18 ++
 .../drm/i915/display/intel_display_types.h    |   7 +
 drivers/gpu/drm/i915/display/intel_dp.c       |   3 +
 drivers/gpu/drm/i915/display/intel_dp.h       |   1 +
 drivers/gpu/drm/i915/display/intel_hdcp.c     | 191 +++++++++++++-----
 drivers/gpu/drm/i915/display/intel_hdcp.h     |   2 +
 drivers/gpu/drm/i915/display/intel_hdmi.c     |  12 +-
 drivers/gpu/drm/i915/i915_reg.h               | 124 +++++++++++-
 drivers/misc/mei/hdcp/mei_hdcp.c              |  45 ++---
 drivers/misc/mei/hdcp/mei_hdcp.h              |  16 +-
 include/drm/i915_drm.h                        |  18 --
 include/drm/i915_mei_hdcp_interface.h         |  29 ++-
 13 files changed, 348 insertions(+), 120 deletions(-)

-- 
2.20.1

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[PATCH v7 1/6] drm/i915: mei_hdcp: I915 sends ddi index as per ME FW

[Ramalingam C]

I915 will convert it's port value into ddi index defiend by ME FW
and will pass it as part of hdcp_port_data structure.

Hence we are exposing the enum mei_fw_ddi to I915 through
i915_mei_interface.h.

Signed-off-by: Ramalingam C <ramalingam.c@intel.com>
---
 drivers/gpu/drm/i915/display/intel_hdcp.c | 15 +++++++++-
 drivers/misc/mei/hdcp/mei_hdcp.c          | 34 ++++++++---------------
 drivers/misc/mei/hdcp/mei_hdcp.h          | 12 --------
 include/drm/i915_mei_hdcp_interface.h     | 16 +++++++++--
 4 files changed, 39 insertions(+), 38 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_hdcp.c b/drivers/gpu/drm/i915/display/intel_hdcp.c
index 6ec5ceeab601..534832f435dc 100644
--- a/drivers/gpu/drm/i915/display/intel_hdcp.c
+++ b/drivers/gpu/drm/i915/display/intel_hdcp.c
@@ -1749,13 +1749,26 @@ static const struct component_ops i915_hdcp_component_ops = {
 	.unbind = i915_hdcp_component_unbind,
 };
 
+static inline
+enum mei_fw_ddi intel_get_mei_fw_ddi_index(enum port port)
+{
+	switch (port) {
+	case PORT_A:
+		return MEI_DDI_A;
+	case PORT_B ... PORT_F:
+		return (enum mei_fw_ddi)port;
+	default:
+		return MEI_DDI_INVALID_PORT;
+	}
+}
+
 static inline int initialize_hdcp_port_data(struct intel_connector *connector,
 					    const struct intel_hdcp_shim *shim)
 {
 	struct intel_hdcp *hdcp = &connector->hdcp;
 	struct hdcp_port_data *data = &hdcp->port_data;
 
-	data->port = connector->encoder->port;
+	data->fw_ddi = intel_get_mei_fw_ddi_index(connector->encoder->port);
 	data->port_type = (u8)HDCP_PORT_TYPE_INTEGRATED;
 	data->protocol = (u8)shim->protocol;
 
diff --git a/drivers/misc/mei/hdcp/mei_hdcp.c b/drivers/misc/mei/hdcp/mei_hdcp.c
index c681f6fab342..3638c77eba26 100644
--- a/drivers/misc/mei/hdcp/mei_hdcp.c
+++ b/drivers/misc/mei/hdcp/mei_hdcp.c
@@ -27,18 +27,6 @@
 
 #include "mei_hdcp.h"
 
-static inline u8 mei_get_ddi_index(enum port port)
-{
-	switch (port) {
-	case PORT_A:
-		return MEI_DDI_A;
-	case PORT_B ... PORT_F:
-		return (u8)port;
-	default:
-		return MEI_DDI_INVALID_PORT;
-	}
-}
-
 /**
  * mei_hdcp_initiate_session() - Initiate a Wired HDCP2.2 Tx Session in ME FW
  * @dev: device corresponding to the mei_cl_device
@@ -69,7 +57,7 @@ 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 = mei_get_ddi_index(data->port);
+	session_init_in.port.physical_port = (u8)data->fw_ddi;
 	session_init_in.protocol = data->protocol;
 
 	byte = mei_cldev_send(cldev, (u8 *)&session_init_in,
@@ -138,7 +126,7 @@ 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 = mei_get_ddi_index(data->port);
+	verify_rxcert_in.port.physical_port = (u8)data->fw_ddi;
 
 	verify_rxcert_in.cert_rx = rx_cert->cert_rx;
 	memcpy(verify_rxcert_in.r_rx, &rx_cert->r_rx, HDCP_2_2_RRX_LEN);
@@ -208,7 +196,7 @@ 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 = mei_get_ddi_index(data->port);
+	send_hprime_in.port.physical_port = (u8)data->fw_ddi;
 
 	memcpy(send_hprime_in.h_prime, rx_hprime->h_prime,
 	       HDCP_2_2_H_PRIME_LEN);
@@ -265,7 +253,7 @@ 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 = mei_get_ddi_index(data->port);
+	pairing_info_in.port.physical_port = (u8)data->fw_ddi;
 
 	memcpy(pairing_info_in.e_kh_km, pairing_info->e_kh_km,
 	       HDCP_2_2_E_KH_KM_LEN);
@@ -323,7 +311,7 @@ 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 = mei_get_ddi_index(data->port);
+	lc_init_in.port.physical_port = (u8)data->fw_ddi;
 
 	byte = mei_cldev_send(cldev, (u8 *)&lc_init_in, sizeof(lc_init_in));
 	if (byte < 0) {
@@ -378,7 +366,7 @@ 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 = mei_get_ddi_index(data->port);
+	verify_lprime_in.port.physical_port = (u8)data->fw_ddi;
 
 	memcpy(verify_lprime_in.l_prime, rx_lprime->l_prime,
 	       HDCP_2_2_L_PRIME_LEN);
@@ -435,7 +423,7 @@ 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 = mei_get_ddi_index(data->port);
+	get_skey_in.port.physical_port = (u8)data->fw_ddi;
 
 	byte = mei_cldev_send(cldev, (u8 *)&get_skey_in, sizeof(get_skey_in));
 	if (byte < 0) {
@@ -499,7 +487,7 @@ 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 = mei_get_ddi_index(data->port);
+	verify_repeater_in.port.physical_port = (u8)data->fw_ddi;
 
 	memcpy(verify_repeater_in.rx_info, rep_topology->rx_info,
 	       HDCP_2_2_RXINFO_LEN);
@@ -569,7 +557,7 @@ static int mei_hdcp_verify_mprime(struct device *dev,
 			WIRED_CMD_BUF_LEN_REPEATER_AUTH_STREAM_REQ_MIN_IN;
 
 	verify_mprime_in.port.integrated_port_type = data->port_type;
-	verify_mprime_in.port.physical_port = mei_get_ddi_index(data->port);
+	verify_mprime_in.port.physical_port = (u8)data->fw_ddi;
 
 	memcpy(verify_mprime_in.m_prime, stream_ready->m_prime,
 	       HDCP_2_2_MPRIME_LEN);
@@ -630,7 +618,7 @@ 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 = mei_get_ddi_index(data->port);
+	enable_auth_in.port.physical_port = (u8)data->fw_ddi;
 	enable_auth_in.stream_type = data->streams[0].stream_type;
 
 	byte = mei_cldev_send(cldev, (u8 *)&enable_auth_in,
@@ -684,7 +672,7 @@ 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 = mei_get_ddi_index(data->port);
+	session_close_in.port.physical_port = (u8)data->fw_ddi;
 
 	byte = mei_cldev_send(cldev, (u8 *)&session_close_in,
 			      sizeof(session_close_in));
diff --git a/drivers/misc/mei/hdcp/mei_hdcp.h b/drivers/misc/mei/hdcp/mei_hdcp.h
index e4b1cd54c853..e60282eb2d48 100644
--- a/drivers/misc/mei/hdcp/mei_hdcp.h
+++ b/drivers/misc/mei/hdcp/mei_hdcp.h
@@ -362,16 +362,4 @@ struct wired_cmd_repeater_auth_stream_req_out {
 	struct hdcp_cmd_header	header;
 	struct hdcp_port_id	port;
 } __packed;
-
-enum mei_fw_ddi {
-	MEI_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,
-};
 #endif /* __MEI_HDCP_H__ */
diff --git a/include/drm/i915_mei_hdcp_interface.h b/include/drm/i915_mei_hdcp_interface.h
index 8c344255146a..a97acf1c9710 100644
--- a/include/drm/i915_mei_hdcp_interface.h
+++ b/include/drm/i915_mei_hdcp_interface.h
@@ -42,9 +42,21 @@ enum hdcp_wired_protocol {
 	HDCP_PROTOCOL_DP
 };
 
+enum mei_fw_ddi {
+	MEI_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,
+};
+
 /**
  * struct hdcp_port_data - intel specific HDCP port data
- * @port: port index as per I915
+ * @fw_ddi: ddi index as per ME FW
  * @port_type: HDCP port type as per ME FW classification
  * @protocol: HDCP adaptation as per ME FW
  * @k: No of streams transmitted on a port. Only on DP MST this is != 1
@@ -56,7 +68,7 @@ enum hdcp_wired_protocol {
  *	     streams
  */
 struct hdcp_port_data {
-	enum port port;
+	enum mei_fw_ddi fw_ddi;
 	u8 port_type;
 	u8 protocol;
 	u16 k;
-- 
2.20.1

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[PATCH v7 2/6] drm: port definition is moved back into i915 header

[Ramalingam C]

Handled the need for exposing enum port to mei_hdcp driver, by
converting the port into ddi index as per ME FW.

Hence enum port definition moved into I915 driver itself.

Signed-off-by: Ramalingam C <ramalingam.c@intel.com>
---
 drivers/gpu/drm/i915/display/intel_bios.h    |  2 ++
 drivers/gpu/drm/i915/display/intel_display.h | 18 ++++++++++++++++++
 drivers/gpu/drm/i915/display/intel_dp.h      |  1 +
 include/drm/i915_drm.h                       | 18 ------------------
 4 files changed, 21 insertions(+), 18 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_bios.h b/drivers/gpu/drm/i915/display/intel_bios.h
index 4969189e620f..9415e22435ba 100644
--- a/drivers/gpu/drm/i915/display/intel_bios.h
+++ b/drivers/gpu/drm/i915/display/intel_bios.h
@@ -34,6 +34,8 @@
 
 #include <drm/i915_drm.h>
 
+#include "intel_display.h"
+
 struct drm_i915_private;
 
 enum intel_backlight_type {
diff --git a/drivers/gpu/drm/i915/display/intel_display.h b/drivers/gpu/drm/i915/display/intel_display.h
index e57e6969051d..40610d51327e 100644
--- a/drivers/gpu/drm/i915/display/intel_display.h
+++ b/drivers/gpu/drm/i915/display/intel_display.h
@@ -182,6 +182,24 @@ enum plane_id {
 	for ((__p) = PLANE_PRIMARY; (__p) < I915_MAX_PLANES; (__p)++) \
 		for_each_if((__crtc)->plane_ids_mask & BIT(__p))
 
+enum port {
+	PORT_NONE = -1,
+
+	PORT_A = 0,
+	PORT_B,
+	PORT_C,
+	PORT_D,
+	PORT_E,
+	PORT_F,
+	PORT_G,
+	PORT_H,
+	PORT_I,
+
+	I915_MAX_PORTS
+};
+
+#define port_name(p) ((p) + 'A')
+
 /*
  * Ports identifier referenced from other drivers.
  * Expected to remain stable over time
diff --git a/drivers/gpu/drm/i915/display/intel_dp.h b/drivers/gpu/drm/i915/display/intel_dp.h
index 657bbb1f5ed0..ca05ae799d6e 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.h
+++ b/drivers/gpu/drm/i915/display/intel_dp.h
@@ -11,6 +11,7 @@
 #include <drm/i915_drm.h>
 
 #include "i915_reg.h"
+#include "intel_display.h"
 
 enum pipe;
 struct drm_connector_state;
diff --git a/include/drm/i915_drm.h b/include/drm/i915_drm.h
index 23274cf92712..6722005884db 100644
--- a/include/drm/i915_drm.h
+++ b/include/drm/i915_drm.h
@@ -100,22 +100,4 @@ extern struct resource intel_graphics_stolen_res;
 #define INTEL_GEN11_BSM_DW1	0xc4
 #define   INTEL_BSM_MASK	(-(1u << 20))
 
-enum port {
-	PORT_NONE = -1,
-
-	PORT_A = 0,
-	PORT_B,
-	PORT_C,
-	PORT_D,
-	PORT_E,
-	PORT_F,
-	PORT_G,
-	PORT_H,
-	PORT_I,
-
-	I915_MAX_PORTS
-};
-
-#define port_name(p) ((p) + 'A')
-
 #endif				/* _I915_DRM_H_ */
-- 
2.20.1

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[PATCH v8 2/6] drm: port definition is moved back into i915 header

[Ramalingam C]

Handled the need for exposing enum port to mei_hdcp driver, by
converting the port into ddi index as per ME FW.

Hence enum port definition moved into I915 driver itself.

v2:
  intel_display.h is included in intel_hdcp.h

Signed-off-by: Ramalingam C <ramalingam.c@intel.com>
---
 drivers/gpu/drm/i915/display/intel_bios.h    |  2 ++
 drivers/gpu/drm/i915/display/intel_display.h | 18 ++++++++++++++++++
 drivers/gpu/drm/i915/display/intel_dp.h      |  1 +
 drivers/gpu/drm/i915/display/intel_hdcp.h    |  2 ++
 include/drm/i915_drm.h                       | 18 ------------------
 5 files changed, 23 insertions(+), 18 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_bios.h b/drivers/gpu/drm/i915/display/intel_bios.h
index 4969189e620f..9415e22435ba 100644
--- a/drivers/gpu/drm/i915/display/intel_bios.h
+++ b/drivers/gpu/drm/i915/display/intel_bios.h
@@ -34,6 +34,8 @@
 
 #include <drm/i915_drm.h>
 
+#include "intel_display.h"
+
 struct drm_i915_private;
 
 enum intel_backlight_type {
diff --git a/drivers/gpu/drm/i915/display/intel_display.h b/drivers/gpu/drm/i915/display/intel_display.h
index e57e6969051d..40610d51327e 100644
--- a/drivers/gpu/drm/i915/display/intel_display.h
+++ b/drivers/gpu/drm/i915/display/intel_display.h
@@ -182,6 +182,24 @@ enum plane_id {
 	for ((__p) = PLANE_PRIMARY; (__p) < I915_MAX_PLANES; (__p)++) \
 		for_each_if((__crtc)->plane_ids_mask & BIT(__p))
 
+enum port {
+	PORT_NONE = -1,
+
+	PORT_A = 0,
+	PORT_B,
+	PORT_C,
+	PORT_D,
+	PORT_E,
+	PORT_F,
+	PORT_G,
+	PORT_H,
+	PORT_I,
+
+	I915_MAX_PORTS
+};
+
+#define port_name(p) ((p) + 'A')
+
 /*
  * Ports identifier referenced from other drivers.
  * Expected to remain stable over time
diff --git a/drivers/gpu/drm/i915/display/intel_dp.h b/drivers/gpu/drm/i915/display/intel_dp.h
index 657bbb1f5ed0..ca05ae799d6e 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.h
+++ b/drivers/gpu/drm/i915/display/intel_dp.h
@@ -11,6 +11,7 @@
 #include <drm/i915_drm.h>
 
 #include "i915_reg.h"
+#include "intel_display.h"
 
 enum pipe;
 struct drm_connector_state;
diff --git a/drivers/gpu/drm/i915/display/intel_hdcp.h b/drivers/gpu/drm/i915/display/intel_hdcp.h
index 13555b054930..c46ff19ca2dd 100644
--- a/drivers/gpu/drm/i915/display/intel_hdcp.h
+++ b/drivers/gpu/drm/i915/display/intel_hdcp.h
@@ -10,6 +10,8 @@
 
 #include <drm/i915_drm.h>
 
+#include "intel_display.h"
+
 struct drm_connector;
 struct drm_connector_state;
 struct drm_i915_private;
diff --git a/include/drm/i915_drm.h b/include/drm/i915_drm.h
index 23274cf92712..6722005884db 100644
--- a/include/drm/i915_drm.h
+++ b/include/drm/i915_drm.h
@@ -100,22 +100,4 @@ extern struct resource intel_graphics_stolen_res;
 #define INTEL_GEN11_BSM_DW1	0xc4
 #define   INTEL_BSM_MASK	(-(1u << 20))
 
-enum port {
-	PORT_NONE = -1,
-
-	PORT_A = 0,
-	PORT_B,
-	PORT_C,
-	PORT_D,
-	PORT_E,
-	PORT_F,
-	PORT_G,
-	PORT_H,
-	PORT_I,
-
-	I915_MAX_PORTS
-};
-
-#define port_name(p) ((p) + 'A')
-
 #endif				/* _I915_DRM_H_ */
-- 
2.20.1

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Re: [PATCH v7 2/6] drm: port definition is moved back into i915 header

[Jani Nikula]

On Thu, 22 Aug 2019, Ramalingam C <ramalingam.c@intel.com> wrote:
> Handled the need for exposing enum port to mei_hdcp driver, by
> converting the port into ddi index as per ME FW.
>
> Hence enum port definition moved into I915 driver itself.

For future reference, please consider using the imperative style in the
commit message. For example, "move port definition back to i915 header",
"Hence move enum port definition into i915 driver itself", etc.

There were some complaints from CI, please make sure this builds with
CONFIG_DRM_I915_WERROR=y.

Reviewed-by: Jani Nikula <jani.nikula@intel.com>

>
> Signed-off-by: Ramalingam C <ramalingam.c@intel.com>
> ---
>  drivers/gpu/drm/i915/display/intel_bios.h    |  2 ++
>  drivers/gpu/drm/i915/display/intel_display.h | 18 ++++++++++++++++++
>  drivers/gpu/drm/i915/display/intel_dp.h      |  1 +
>  include/drm/i915_drm.h                       | 18 ------------------
>  4 files changed, 21 insertions(+), 18 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/display/intel_bios.h b/drivers/gpu/drm/i915/display/intel_bios.h
> index 4969189e620f..9415e22435ba 100644
> --- a/drivers/gpu/drm/i915/display/intel_bios.h
> +++ b/drivers/gpu/drm/i915/display/intel_bios.h
> @@ -34,6 +34,8 @@
>  
>  #include <drm/i915_drm.h>
>  
> +#include "intel_display.h"
> +
>  struct drm_i915_private;
>  
>  enum intel_backlight_type {
> diff --git a/drivers/gpu/drm/i915/display/intel_display.h b/drivers/gpu/drm/i915/display/intel_display.h
> index e57e6969051d..40610d51327e 100644
> --- a/drivers/gpu/drm/i915/display/intel_display.h
> +++ b/drivers/gpu/drm/i915/display/intel_display.h
> @@ -182,6 +182,24 @@ enum plane_id {
>  	for ((__p) = PLANE_PRIMARY; (__p) < I915_MAX_PLANES; (__p)++) \
>  		for_each_if((__crtc)->plane_ids_mask & BIT(__p))
>  
> +enum port {
> +	PORT_NONE = -1,
> +
> +	PORT_A = 0,
> +	PORT_B,
> +	PORT_C,
> +	PORT_D,
> +	PORT_E,
> +	PORT_F,
> +	PORT_G,
> +	PORT_H,
> +	PORT_I,
> +
> +	I915_MAX_PORTS
> +};
> +
> +#define port_name(p) ((p) + 'A')
> +
>  /*
>   * Ports identifier referenced from other drivers.
>   * Expected to remain stable over time
> diff --git a/drivers/gpu/drm/i915/display/intel_dp.h b/drivers/gpu/drm/i915/display/intel_dp.h
> index 657bbb1f5ed0..ca05ae799d6e 100644
> --- a/drivers/gpu/drm/i915/display/intel_dp.h
> +++ b/drivers/gpu/drm/i915/display/intel_dp.h
> @@ -11,6 +11,7 @@
>  #include <drm/i915_drm.h>
>  
>  #include "i915_reg.h"
> +#include "intel_display.h"
>  
>  enum pipe;
>  struct drm_connector_state;
> diff --git a/include/drm/i915_drm.h b/include/drm/i915_drm.h
> index 23274cf92712..6722005884db 100644
> --- a/include/drm/i915_drm.h
> +++ b/include/drm/i915_drm.h
> @@ -100,22 +100,4 @@ extern struct resource intel_graphics_stolen_res;
>  #define INTEL_GEN11_BSM_DW1	0xc4
>  #define   INTEL_BSM_MASK	(-(1u << 20))
>  
> -enum port {
> -	PORT_NONE = -1,
> -
> -	PORT_A = 0,
> -	PORT_B,
> -	PORT_C,
> -	PORT_D,
> -	PORT_E,
> -	PORT_F,
> -	PORT_G,
> -	PORT_H,
> -	PORT_I,
> -
> -	I915_MAX_PORTS
> -};
> -
> -#define port_name(p) ((p) + 'A')
> -
>  #endif				/* _I915_DRM_H_ */

-- 
Jani Nikula, Intel Open Source Graphics Center
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[PATCH v7 3/6] drm: I915 mei interface is extended for transcoder info

[Ramalingam C]

I915 needs to send the index of the transcoder as per ME FW.
To support this, enum mei_fw_ddi is defined and added as a member into
the struct hdcp_port_data.

Signed-off-by: Ramalingam C <ramalingam.c@intel.com>
---
 include/drm/i915_mei_hdcp_interface.h | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/include/drm/i915_mei_hdcp_interface.h b/include/drm/i915_mei_hdcp_interface.h
index a97acf1c9710..0de629bf2f62 100644
--- a/include/drm/i915_mei_hdcp_interface.h
+++ b/include/drm/i915_mei_hdcp_interface.h
@@ -54,9 +54,21 @@ enum mei_fw_ddi {
 	MEI_DDI_RANGE_END = MEI_DDI_A,
 };
 
+enum mei_fw_tc {
+	MEI_INVALID_TRANSCODER = 0x00,	/* Invalid transcoder type */
+	MEI_TC_EDP,			/* Transcoder for eDP */
+	MEI_TC_DSI0,			/* Transcoder for DSI0 */
+	MEI_TC_DSI1,			/* Transcoder for DSI1 */
+	MEI_TC_A = 0x10,		/* Transcoder TCA */
+	MEI_TC_B,			/* Transcoder TCB */
+	MEI_TC_C,			/* Transcoder TCC */
+	MEI_TC_D			/* Transcoder TCD */
+};
+
 /**
  * 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
  * @k: No of streams transmitted on a port. Only on DP MST this is != 1
@@ -69,6 +81,7 @@ enum mei_fw_ddi {
  */
 struct hdcp_port_data {
 	enum mei_fw_ddi fw_ddi;
+	enum mei_fw_tc fw_tc;
 	u8 port_type;
 	u8 protocol;
 	u16 k;
-- 
2.20.1

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[PATCH v7 4/6] misc/mei/hdcp: transcoder index in port info

[Ramalingam C]

For gen12+ platform we need to pass the transcoder info
as part of the port info.

Signed-off-by: Ramalingam C <ramalingam.c@intel.com>
---
 drivers/misc/mei/hdcp/mei_hdcp.c | 11 +++++++++++
 drivers/misc/mei/hdcp/mei_hdcp.h |  4 +++-
 2 files changed, 14 insertions(+), 1 deletion(-)

diff --git a/drivers/misc/mei/hdcp/mei_hdcp.c b/drivers/misc/mei/hdcp/mei_hdcp.c
index 3638c77eba26..93027fd96c71 100644
--- a/drivers/misc/mei/hdcp/mei_hdcp.c
+++ b/drivers/misc/mei/hdcp/mei_hdcp.c
@@ -58,6 +58,7 @@ mei_hdcp_initiate_session(struct device *dev, struct hdcp_port_data *data,
 
 	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.protocol = data->protocol;
 
 	byte = mei_cldev_send(cldev, (u8 *)&session_init_in,
@@ -127,6 +128,7 @@ mei_hdcp_verify_receiver_cert_prepare_km(struct device *dev,
 
 	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.cert_rx = rx_cert->cert_rx;
 	memcpy(verify_rxcert_in.r_rx, &rx_cert->r_rx, HDCP_2_2_RRX_LEN);
@@ -197,6 +199,7 @@ mei_hdcp_verify_hprime(struct device *dev, struct hdcp_port_data *data,
 
 	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;
 
 	memcpy(send_hprime_in.h_prime, rx_hprime->h_prime,
 	       HDCP_2_2_H_PRIME_LEN);
@@ -254,6 +257,7 @@ mei_hdcp_store_pairing_info(struct device *dev, struct hdcp_port_data *data,
 
 	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;
 
 	memcpy(pairing_info_in.e_kh_km, pairing_info->e_kh_km,
 	       HDCP_2_2_E_KH_KM_LEN);
@@ -312,6 +316,7 @@ mei_hdcp_initiate_locality_check(struct device *dev,
 
 	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;
 
 	byte = mei_cldev_send(cldev, (u8 *)&lc_init_in, sizeof(lc_init_in));
 	if (byte < 0) {
@@ -367,6 +372,7 @@ mei_hdcp_verify_lprime(struct device *dev, struct hdcp_port_data *data,
 
 	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;
 
 	memcpy(verify_lprime_in.l_prime, rx_lprime->l_prime,
 	       HDCP_2_2_L_PRIME_LEN);
@@ -424,6 +430,7 @@ static int mei_hdcp_get_session_key(struct device *dev,
 
 	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;
 
 	byte = mei_cldev_send(cldev, (u8 *)&get_skey_in, sizeof(get_skey_in));
 	if (byte < 0) {
@@ -488,6 +495,7 @@ mei_hdcp_repeater_check_flow_prepare_ack(struct device *dev,
 
 	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;
 
 	memcpy(verify_repeater_in.rx_info, rep_topology->rx_info,
 	       HDCP_2_2_RXINFO_LEN);
@@ -558,6 +566,7 @@ static int mei_hdcp_verify_mprime(struct device *dev,
 
 	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;
 
 	memcpy(verify_mprime_in.m_prime, stream_ready->m_prime,
 	       HDCP_2_2_MPRIME_LEN);
@@ -619,6 +628,7 @@ static int mei_hdcp_enable_authentication(struct device *dev,
 
 	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.stream_type = data->streams[0].stream_type;
 
 	byte = mei_cldev_send(cldev, (u8 *)&enable_auth_in,
@@ -673,6 +683,7 @@ mei_hdcp_close_session(struct device *dev, struct hdcp_port_data *data)
 
 	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;
 
 	byte = mei_cldev_send(cldev, (u8 *)&session_close_in,
 			      sizeof(session_close_in));
diff --git a/drivers/misc/mei/hdcp/mei_hdcp.h b/drivers/misc/mei/hdcp/mei_hdcp.h
index e60282eb2d48..58e439d2fc1a 100644
--- a/drivers/misc/mei/hdcp/mei_hdcp.h
+++ b/drivers/misc/mei/hdcp/mei_hdcp.h
@@ -184,8 +184,10 @@ struct hdcp_cmd_no_data {
 /* Uniquely identifies the hdcp port being addressed for a given command. */
 struct hdcp_port_id {
 	u8	integrated_port_type;
+	/* Used until Gen11.5. Must be zero for Gen11.5+ */
 	u8	physical_port;
-	u16	reserved;
+	u8	attached_transcoder;
+	u8	reserved;
 } __packed;
 
 /*
-- 
2.20.1

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[PATCH v7 5/6] drm/i915/hdcp: updating the transcoder of the hdcp port

[Ramalingam C]

On gen12+ platforms, HDCP HW is associated to the transcoder.
Hence on every modeset associated transcoder is updated into the
intel_hdcp.

Signed-off-by: Ramalingam C <ramalingam.c@intel.com>
---
 .../drm/i915/display/intel_display_types.h    |  7 +++
 drivers/gpu/drm/i915/display/intel_dp.c       |  3 ++
 drivers/gpu/drm/i915/display/intel_hdcp.c     | 49 ++++++++++++++++++-
 drivers/gpu/drm/i915/display/intel_hdcp.h     |  2 +
 drivers/gpu/drm/i915/display/intel_hdmi.c     |  3 ++
 5 files changed, 63 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/display/intel_display_types.h b/drivers/gpu/drm/i915/display/intel_display_types.h
index 449abaea619f..c6b9f7198ee3 100644
--- a/drivers/gpu/drm/i915/display/intel_display_types.h
+++ b/drivers/gpu/drm/i915/display/intel_display_types.h
@@ -388,6 +388,13 @@ struct intel_hdcp {
 	wait_queue_head_t cp_irq_queue;
 	atomic_t cp_irq_count;
 	int cp_irq_count_cached;
+
+	/*
+	 * HDCP register access for gen12+ need the transcoder associated.
+	 * Transcoder attached to the connector could be changed at modeset.
+	 * Hence caching the transcoder here.
+	 */
+	enum transcoder trans;
 };
 
 struct intel_connector {
diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
index 921ad0a2f7ba..ba5317d56da7 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.c
+++ b/drivers/gpu/drm/i915/display/intel_dp.c
@@ -2244,6 +2244,9 @@ intel_dp_compute_config(struct intel_encoder *encoder,
 
 	intel_psr_compute_config(intel_dp, pipe_config);
 
+	intel_hdcp_transcoder_config(intel_connector,
+				     pipe_config->cpu_transcoder);
+
 	return 0;
 }
 
diff --git a/drivers/gpu/drm/i915/display/intel_hdcp.c b/drivers/gpu/drm/i915/display/intel_hdcp.c
index 534832f435dc..264bda5d484c 100644
--- a/drivers/gpu/drm/i915/display/intel_hdcp.c
+++ b/drivers/gpu/drm/i915/display/intel_hdcp.c
@@ -1762,13 +1762,60 @@ enum mei_fw_ddi intel_get_mei_fw_ddi_index(enum port port)
 	}
 }
 
+static inline
+enum mei_fw_tc intel_get_mei_fw_tc(enum transcoder tc)
+{
+	switch (tc) {
+	case TRANSCODER_A ... TRANSCODER_D:
+		return (enum mei_fw_tc)(tc | 0x10);
+	case TRANSCODER_EDP:
+		return MEI_TC_EDP;
+	case TRANSCODER_DSI_0:
+		return MEI_TC_DSI0;
+	case TRANSCODER_DSI_1:
+		return MEI_TC_DSI1;
+	default:
+		return MEI_INVALID_TRANSCODER;
+	}
+}
+
+void intel_hdcp_transcoder_config(struct intel_connector *connector,
+				  enum transcoder trans)
+{
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
+	struct intel_hdcp *hdcp = &connector->hdcp;
+
+	if (!hdcp->shim)
+		return;
+
+	if (INTEL_GEN(dev_priv) >= 12) {
+		mutex_lock(&hdcp->mutex);
+		hdcp->trans = trans;
+		hdcp->port_data.fw_tc = intel_get_mei_fw_tc(trans);
+		mutex_unlock(&hdcp->mutex);
+	}
+}
+
 static inline int initialize_hdcp_port_data(struct intel_connector *connector,
 					    const struct intel_hdcp_shim *shim)
 {
+	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
 	struct intel_hdcp *hdcp = &connector->hdcp;
 	struct hdcp_port_data *data = &hdcp->port_data;
+	struct intel_crtc *crtc;
+
+	if (INTEL_GEN(dev_priv) < 12) {
+		data->fw_ddi =
+			intel_get_mei_fw_ddi_index(connector->encoder->port);
+	} else {
+		crtc = to_intel_crtc(connector->base.state->crtc);
+		if (crtc) {
+			hdcp->trans = crtc->config->cpu_transcoder;
+			data->fw_tc = intel_get_mei_fw_tc(hdcp->trans);
+		}
+		data->fw_ddi = intel_get_mei_fw_ddi_index(PORT_NONE);
+	}
 
-	data->fw_ddi = intel_get_mei_fw_ddi_index(connector->encoder->port);
 	data->port_type = (u8)HDCP_PORT_TYPE_INTEGRATED;
 	data->protocol = (u8)shim->protocol;
 
diff --git a/drivers/gpu/drm/i915/display/intel_hdcp.h b/drivers/gpu/drm/i915/display/intel_hdcp.h
index 13555b054930..1041b2c11fe9 100644
--- a/drivers/gpu/drm/i915/display/intel_hdcp.h
+++ b/drivers/gpu/drm/i915/display/intel_hdcp.h
@@ -19,6 +19,8 @@ struct intel_hdcp_shim;
 void intel_hdcp_atomic_check(struct drm_connector *connector,
 			     struct drm_connector_state *old_state,
 			     struct drm_connector_state *new_state);
+void intel_hdcp_transcoder_config(struct intel_connector *connector,
+				  enum transcoder trans);
 int intel_hdcp_init(struct intel_connector *connector,
 		    const struct intel_hdcp_shim *hdcp_shim);
 int intel_hdcp_enable(struct intel_connector *connector, u8 content_type);
diff --git a/drivers/gpu/drm/i915/display/intel_hdmi.c b/drivers/gpu/drm/i915/display/intel_hdmi.c
index e02f0faecf02..6e9bb6bd1ee2 100644
--- a/drivers/gpu/drm/i915/display/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/display/intel_hdmi.c
@@ -2431,6 +2431,9 @@ int intel_hdmi_compute_config(struct intel_encoder *encoder,
 		return -EINVAL;
 	}
 
+	intel_hdcp_transcoder_config(intel_hdmi->attached_connector,
+				     pipe_config->cpu_transcoder);
+
 	return 0;
 }
 
-- 
2.20.1

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Re: [PATCH v7 5/6] drm/i915/hdcp: updating the transcoder of the hdcp port

[Jani Nikula]

On Thu, 22 Aug 2019, Ramalingam C <ramalingam.c@intel.com> wrote:
> On gen12+ platforms, HDCP HW is associated to the transcoder.
> Hence on every modeset associated transcoder is updated into the
> intel_hdcp.
>
> Signed-off-by: Ramalingam C <ramalingam.c@intel.com>
> ---
>  .../drm/i915/display/intel_display_types.h    |  7 +++
>  drivers/gpu/drm/i915/display/intel_dp.c       |  3 ++
>  drivers/gpu/drm/i915/display/intel_hdcp.c     | 49 ++++++++++++++++++-
>  drivers/gpu/drm/i915/display/intel_hdcp.h     |  2 +
>  drivers/gpu/drm/i915/display/intel_hdmi.c     |  3 ++
>  5 files changed, 63 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/i915/display/intel_display_types.h b/drivers/gpu/drm/i915/display/intel_display_types.h
> index 449abaea619f..c6b9f7198ee3 100644
> --- a/drivers/gpu/drm/i915/display/intel_display_types.h
> +++ b/drivers/gpu/drm/i915/display/intel_display_types.h
> @@ -388,6 +388,13 @@ struct intel_hdcp {
>  	wait_queue_head_t cp_irq_queue;
>  	atomic_t cp_irq_count;
>  	int cp_irq_count_cached;
> +
> +	/*
> +	 * HDCP register access for gen12+ need the transcoder associated.
> +	 * Transcoder attached to the connector could be changed at modeset.
> +	 * Hence caching the transcoder here.
> +	 */
> +	enum transcoder trans;

$ git grep "enum transcoder" -- drivers/gpu/drm/i915/

Please call this cpu_transcoder.


>  };
>  
>  struct intel_connector {
> diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
> index 921ad0a2f7ba..ba5317d56da7 100644
> --- a/drivers/gpu/drm/i915/display/intel_dp.c
> +++ b/drivers/gpu/drm/i915/display/intel_dp.c
> @@ -2244,6 +2244,9 @@ intel_dp_compute_config(struct intel_encoder *encoder,
>  
>  	intel_psr_compute_config(intel_dp, pipe_config);
>  
> +	intel_hdcp_transcoder_config(intel_connector,
> +				     pipe_config->cpu_transcoder);
> +
>  	return 0;
>  }
>  
> diff --git a/drivers/gpu/drm/i915/display/intel_hdcp.c b/drivers/gpu/drm/i915/display/intel_hdcp.c
> index 534832f435dc..264bda5d484c 100644
> --- a/drivers/gpu/drm/i915/display/intel_hdcp.c
> +++ b/drivers/gpu/drm/i915/display/intel_hdcp.c
> @@ -1762,13 +1762,60 @@ enum mei_fw_ddi intel_get_mei_fw_ddi_index(enum port port)
>  	}
>  }
>  
> +static inline
> +enum mei_fw_tc intel_get_mei_fw_tc(enum transcoder tc)

enum transcoder trancoder or enum transcoder cpu_transcoder.

> +{
> +	switch (tc) {
> +	case TRANSCODER_A ... TRANSCODER_D:
> +		return (enum mei_fw_tc)(tc | 0x10);
> +	case TRANSCODER_EDP:
> +		return MEI_TC_EDP;
> +	case TRANSCODER_DSI_0:
> +		return MEI_TC_DSI0;
> +	case TRANSCODER_DSI_1:
> +		return MEI_TC_DSI1;
> +	default:
> +		return MEI_INVALID_TRANSCODER;
> +	}
> +}
> +
> +void intel_hdcp_transcoder_config(struct intel_connector *connector,
> +				  enum transcoder trans)

enum transcoder trancoder or enum transcoder cpu_transcoder.

> +{
> +	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
> +	struct intel_hdcp *hdcp = &connector->hdcp;
> +
> +	if (!hdcp->shim)
> +		return;
> +
> +	if (INTEL_GEN(dev_priv) >= 12) {
> +		mutex_lock(&hdcp->mutex);
> +		hdcp->trans = trans;
> +		hdcp->port_data.fw_tc = intel_get_mei_fw_tc(trans);
> +		mutex_unlock(&hdcp->mutex);
> +	}
> +}
> +
>  static inline int initialize_hdcp_port_data(struct intel_connector *connector,
>  					    const struct intel_hdcp_shim *shim)
>  {
> +	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
>  	struct intel_hdcp *hdcp = &connector->hdcp;
>  	struct hdcp_port_data *data = &hdcp->port_data;
> +	struct intel_crtc *crtc;
> +
> +	if (INTEL_GEN(dev_priv) < 12) {
> +		data->fw_ddi =
> +			intel_get_mei_fw_ddi_index(connector->encoder->port);
> +	} else {
> +		crtc = to_intel_crtc(connector->base.state->crtc);
> +		if (crtc) {
> +			hdcp->trans = crtc->config->cpu_transcoder;
> +			data->fw_tc = intel_get_mei_fw_tc(hdcp->trans);
> +		}
> +		data->fw_ddi = intel_get_mei_fw_ddi_index(PORT_NONE);
> +	}
>  
> -	data->fw_ddi = intel_get_mei_fw_ddi_index(connector->encoder->port);
>  	data->port_type = (u8)HDCP_PORT_TYPE_INTEGRATED;
>  	data->protocol = (u8)shim->protocol;
>  
> diff --git a/drivers/gpu/drm/i915/display/intel_hdcp.h b/drivers/gpu/drm/i915/display/intel_hdcp.h
> index 13555b054930..1041b2c11fe9 100644
> --- a/drivers/gpu/drm/i915/display/intel_hdcp.h
> +++ b/drivers/gpu/drm/i915/display/intel_hdcp.h
> @@ -19,6 +19,8 @@ struct intel_hdcp_shim;
>  void intel_hdcp_atomic_check(struct drm_connector *connector,
>  			     struct drm_connector_state *old_state,
>  			     struct drm_connector_state *new_state);
> +void intel_hdcp_transcoder_config(struct intel_connector *connector,
> +				  enum transcoder trans);

enum transcoder trancoder or enum transcoder cpu_transcoder.

>  int intel_hdcp_init(struct intel_connector *connector,
>  		    const struct intel_hdcp_shim *hdcp_shim);
>  int intel_hdcp_enable(struct intel_connector *connector, u8 content_type);
> diff --git a/drivers/gpu/drm/i915/display/intel_hdmi.c b/drivers/gpu/drm/i915/display/intel_hdmi.c
> index e02f0faecf02..6e9bb6bd1ee2 100644
> --- a/drivers/gpu/drm/i915/display/intel_hdmi.c
> +++ b/drivers/gpu/drm/i915/display/intel_hdmi.c
> @@ -2431,6 +2431,9 @@ int intel_hdmi_compute_config(struct intel_encoder *encoder,
>  		return -EINVAL;
>  	}
>  
> +	intel_hdcp_transcoder_config(intel_hdmi->attached_connector,
> +				     pipe_config->cpu_transcoder);
> +
>  	return 0;
>  }

-- 
Jani Nikula, Intel Open Source Graphics Center
_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel

[PATCH v7 6/6] drm/i915/hdcp: Enable HDCP 1.4 and 2.2 on Gen12+

[Ramalingam C]

From Gen12 onwards, HDCP HW block is implemented within transcoders.
Till Gen11 HDCP HW block was part of DDI.

Hence required changes in HW programming is handled here.

As ME FW needs the transcoder detail on which HDCP is enabled
on Gen12+ platform, we are populating the detail in hdcp_port_data.

v2:
  _MMIO_TRANS is used [Lucas and Daniel]
  platform check is moved into the caller [Lucas]
v3:
  platform check is moved into a macro [Shashank]
v4:
  Few optimizations in the coding [Shashank]
v5:
  Fixed alignment in macro definition in i915_reg.h [Shashank]
  unused variables "reg" is removed.
v6:
  Configuring the transcoder at compute_config.
  transcoder is used instead of pipe in macros.
  Rebased.
v7:
  transcoder is cached at intel_hdcp
  hdcp_port_data is configured with transcoder index asper ME FW.

Signed-off-by: Ramalingam C <ramalingam.c@intel.com>
Reviewed-by: Shashank Sharma <shashank.sharma@intel.com> [v5]
---
 drivers/gpu/drm/i915/display/intel_hdcp.c | 129 +++++++++++++---------
 drivers/gpu/drm/i915/display/intel_hdmi.c |   9 +-
 drivers/gpu/drm/i915/i915_reg.h           | 124 +++++++++++++++++++--
 3 files changed, 199 insertions(+), 63 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_hdcp.c b/drivers/gpu/drm/i915/display/intel_hdcp.c
index 264bda5d484c..80df581a0bfd 100644
--- a/drivers/gpu/drm/i915/display/intel_hdcp.c
+++ b/drivers/gpu/drm/i915/display/intel_hdcp.c
@@ -18,6 +18,7 @@
 #include "intel_display_types.h"
 #include "intel_hdcp.h"
 #include "intel_sideband.h"
+#include "intel_connector.h"
 
 #define KEY_LOAD_TRIES	5
 #define ENCRYPT_STATUS_CHANGE_TIMEOUT_MS	50
@@ -105,24 +106,17 @@ bool intel_hdcp2_capable(struct intel_connector *connector)
 	return capable;
 }
 
-static inline bool intel_hdcp_in_use(struct intel_connector *connector)
+static inline bool intel_hdcp_in_use(struct drm_i915_private *dev_priv,
+				     enum transcoder tc, enum port port)
 {
-	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
-	enum port port = connector->encoder->port;
-	u32 reg;
-
-	reg = I915_READ(PORT_HDCP_STATUS(port));
-	return reg & HDCP_STATUS_ENC;
+	return I915_READ(HDCP_STATUS(dev_priv, tc, port)) & HDCP_STATUS_ENC;
 }
 
-static inline bool intel_hdcp2_in_use(struct intel_connector *connector)
+static inline bool intel_hdcp2_in_use(struct drm_i915_private *dev_priv,
+				      enum transcoder tc, enum port port)
 {
-	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
-	enum port port = connector->encoder->port;
-	u32 reg;
-
-	reg = I915_READ(HDCP2_STATUS_DDI(port));
-	return reg & LINK_ENCRYPTION_STATUS;
+	return I915_READ(HDCP2_STATUS(dev_priv, tc, port)) &
+	       LINK_ENCRYPTION_STATUS;
 }
 
 static int intel_hdcp_poll_ksv_fifo(struct intel_digital_port *intel_dig_port,
@@ -253,9 +247,28 @@ static int intel_write_sha_text(struct drm_i915_private *dev_priv, u32 sha_text)
 }
 
 static
-u32 intel_hdcp_get_repeater_ctl(struct intel_digital_port *intel_dig_port)
+u32 intel_hdcp_get_repeater_ctl(struct drm_i915_private *dev_priv,
+				enum transcoder tc, enum port port)
 {
-	enum port port = intel_dig_port->base.port;
+	if (INTEL_GEN(dev_priv) >= 12) {
+		switch (tc) {
+		case TRANSCODER_A:
+			return HDCP_TRANSA_REP_PRESENT |
+			       HDCP_TRANSA_SHA1_M0;
+		case TRANSCODER_B:
+			return HDCP_TRANSB_REP_PRESENT |
+			       HDCP_TRANSB_SHA1_M0;
+		case TRANSCODER_C:
+			return HDCP_TRANSC_REP_PRESENT |
+			       HDCP_TRANSC_SHA1_M0;
+		/* FIXME: Add a case for PIPE_D */
+		default:
+			DRM_ERROR("Unknown transcoder %d\n", tc);
+			break;
+		}
+		return -EINVAL;
+	}
+
 	switch (port) {
 	case PORT_A:
 		return HDCP_DDIA_REP_PRESENT | HDCP_DDIA_SHA1_M0;
@@ -268,18 +281,21 @@ u32 intel_hdcp_get_repeater_ctl(struct intel_digital_port *intel_dig_port)
 	case PORT_E:
 		return HDCP_DDIE_REP_PRESENT | HDCP_DDIE_SHA1_M0;
 	default:
+		DRM_ERROR("Unknown port %d\n", port);
 		break;
 	}
-	DRM_ERROR("Unknown port %d\n", port);
 	return -EINVAL;
 }
 
 static
-int intel_hdcp_validate_v_prime(struct intel_digital_port *intel_dig_port,
+int intel_hdcp_validate_v_prime(struct intel_connector *connector,
 				const struct intel_hdcp_shim *shim,
 				u8 *ksv_fifo, u8 num_downstream, u8 *bstatus)
 {
+	struct intel_digital_port *intel_dig_port = conn_to_dig_port(connector);
 	struct drm_i915_private *dev_priv;
+	enum transcoder tc = connector->hdcp.trans;
+	enum port port = intel_dig_port->base.port;
 	u32 vprime, sha_text, sha_leftovers, rep_ctl;
 	int ret, i, j, sha_idx;
 
@@ -306,7 +322,7 @@ int intel_hdcp_validate_v_prime(struct intel_digital_port *intel_dig_port,
 	sha_idx = 0;
 	sha_text = 0;
 	sha_leftovers = 0;
-	rep_ctl = intel_hdcp_get_repeater_ctl(intel_dig_port);
+	rep_ctl = intel_hdcp_get_repeater_ctl(dev_priv, tc, port);
 	I915_WRITE(HDCP_REP_CTL, rep_ctl | HDCP_SHA1_TEXT_32);
 	for (i = 0; i < num_downstream; i++) {
 		unsigned int sha_empty;
@@ -548,7 +564,7 @@ int intel_hdcp_auth_downstream(struct intel_connector *connector)
 	 * V prime atleast twice.
 	 */
 	for (i = 0; i < tries; i++) {
-		ret = intel_hdcp_validate_v_prime(intel_dig_port, shim,
+		ret = intel_hdcp_validate_v_prime(connector, shim,
 						  ksv_fifo, num_downstream,
 						  bstatus);
 		if (!ret)
@@ -576,6 +592,7 @@ static int intel_hdcp_auth(struct intel_connector *connector)
 	struct drm_device *dev = connector->base.dev;
 	const struct intel_hdcp_shim *shim = hdcp->shim;
 	struct drm_i915_private *dev_priv;
+	enum transcoder tc = connector->hdcp.trans;
 	enum port port;
 	unsigned long r0_prime_gen_start;
 	int ret, i, tries = 2;
@@ -615,18 +632,18 @@ static int intel_hdcp_auth(struct intel_connector *connector)
 
 	/* Initialize An with 2 random values and acquire it */
 	for (i = 0; i < 2; i++)
-		I915_WRITE(PORT_HDCP_ANINIT(port), get_random_u32());
-	I915_WRITE(PORT_HDCP_CONF(port), HDCP_CONF_CAPTURE_AN);
+		I915_WRITE(HDCP_ANINIT(dev_priv, tc, port), get_random_u32());
+	I915_WRITE(HDCP_CONF(dev_priv, tc, port), HDCP_CONF_CAPTURE_AN);
 
 	/* Wait for An to be acquired */
-	if (intel_de_wait_for_set(dev_priv, PORT_HDCP_STATUS(port),
+	if (intel_de_wait_for_set(dev_priv, HDCP_STATUS(dev_priv, tc, port),
 				  HDCP_STATUS_AN_READY, 1)) {
 		DRM_ERROR("Timed out waiting for An\n");
 		return -ETIMEDOUT;
 	}
 
-	an.reg[0] = I915_READ(PORT_HDCP_ANLO(port));
-	an.reg[1] = I915_READ(PORT_HDCP_ANHI(port));
+	an.reg[0] = I915_READ(HDCP_ANLO(dev_priv, tc, port));
+	an.reg[1] = I915_READ(HDCP_ANHI(dev_priv, tc, port));
 	ret = shim->write_an_aksv(intel_dig_port, an.shim);
 	if (ret)
 		return ret;
@@ -644,24 +661,24 @@ static int intel_hdcp_auth(struct intel_connector *connector)
 		return -EPERM;
 	}
 
-	I915_WRITE(PORT_HDCP_BKSVLO(port), bksv.reg[0]);
-	I915_WRITE(PORT_HDCP_BKSVHI(port), bksv.reg[1]);
+	I915_WRITE(HDCP_BKSVLO(dev_priv, tc, port), bksv.reg[0]);
+	I915_WRITE(HDCP_BKSVHI(dev_priv, tc, port), bksv.reg[1]);
 
 	ret = shim->repeater_present(intel_dig_port, &repeater_present);
 	if (ret)
 		return ret;
 	if (repeater_present)
 		I915_WRITE(HDCP_REP_CTL,
-			   intel_hdcp_get_repeater_ctl(intel_dig_port));
+			   intel_hdcp_get_repeater_ctl(dev_priv, tc, port));
 
 	ret = shim->toggle_signalling(intel_dig_port, true);
 	if (ret)
 		return ret;
 
-	I915_WRITE(PORT_HDCP_CONF(port), HDCP_CONF_AUTH_AND_ENC);
+	I915_WRITE(HDCP_CONF(dev_priv, tc, port), HDCP_CONF_AUTH_AND_ENC);
 
 	/* Wait for R0 ready */
-	if (wait_for(I915_READ(PORT_HDCP_STATUS(port)) &
+	if (wait_for(I915_READ(HDCP_STATUS(dev_priv, tc, port)) &
 		     (HDCP_STATUS_R0_READY | HDCP_STATUS_ENC), 1)) {
 		DRM_ERROR("Timed out waiting for R0 ready\n");
 		return -ETIMEDOUT;
@@ -689,22 +706,22 @@ static int intel_hdcp_auth(struct intel_connector *connector)
 		ret = shim->read_ri_prime(intel_dig_port, ri.shim);
 		if (ret)
 			return ret;
-		I915_WRITE(PORT_HDCP_RPRIME(port), ri.reg);
+		I915_WRITE(HDCP_RPRIME(dev_priv, tc, port), ri.reg);
 
 		/* Wait for Ri prime match */
-		if (!wait_for(I915_READ(PORT_HDCP_STATUS(port)) &
+		if (!wait_for(I915_READ(HDCP_STATUS(dev_priv, tc, port)) &
 		    (HDCP_STATUS_RI_MATCH | HDCP_STATUS_ENC), 1))
 			break;
 	}
 
 	if (i == tries) {
 		DRM_DEBUG_KMS("Timed out waiting for Ri prime match (%x)\n",
-			      I915_READ(PORT_HDCP_STATUS(port)));
+			      I915_READ(HDCP_STATUS(dev_priv, tc, port)));
 		return -ETIMEDOUT;
 	}
 
 	/* Wait for encryption confirmation */
-	if (intel_de_wait_for_set(dev_priv, PORT_HDCP_STATUS(port),
+	if (intel_de_wait_for_set(dev_priv, HDCP_STATUS(dev_priv, tc, port),
 				  HDCP_STATUS_ENC,
 				  ENCRYPT_STATUS_CHANGE_TIMEOUT_MS)) {
 		DRM_ERROR("Timed out waiting for encryption\n");
@@ -729,15 +746,16 @@ static int _intel_hdcp_disable(struct intel_connector *connector)
 	struct drm_i915_private *dev_priv = connector->base.dev->dev_private;
 	struct intel_digital_port *intel_dig_port = conn_to_dig_port(connector);
 	enum port port = intel_dig_port->base.port;
+	enum transcoder tc = hdcp->trans;
 	int ret;
 
 	DRM_DEBUG_KMS("[%s:%d] HDCP is being disabled...\n",
 		      connector->base.name, connector->base.base.id);
 
 	hdcp->hdcp_encrypted = false;
-	I915_WRITE(PORT_HDCP_CONF(port), 0);
-	if (intel_de_wait_for_clear(dev_priv, PORT_HDCP_STATUS(port), ~0,
-				    ENCRYPT_STATUS_CHANGE_TIMEOUT_MS)) {
+	I915_WRITE(HDCP_CONF(dev_priv, tc, port), 0);
+	if (intel_de_wait_for_clear(dev_priv, HDCP_STATUS(dev_priv, tc, port),
+				    ~0, ENCRYPT_STATUS_CHANGE_TIMEOUT_MS)) {
 		DRM_ERROR("Failed to disable HDCP, timeout clearing status\n");
 		return -ETIMEDOUT;
 	}
@@ -808,9 +826,11 @@ static int intel_hdcp_check_link(struct intel_connector *connector)
 	struct drm_i915_private *dev_priv = connector->base.dev->dev_private;
 	struct intel_digital_port *intel_dig_port = conn_to_dig_port(connector);
 	enum port port = intel_dig_port->base.port;
+	enum transcoder tc;
 	int ret = 0;
 
 	mutex_lock(&hdcp->mutex);
+	tc = hdcp->trans;
 
 	/* Check_link valid only when HDCP1.4 is enabled */
 	if (hdcp->value != DRM_MODE_CONTENT_PROTECTION_ENABLED ||
@@ -819,10 +839,10 @@ static int intel_hdcp_check_link(struct intel_connector *connector)
 		goto out;
 	}
 
-	if (WARN_ON(!intel_hdcp_in_use(connector))) {
+	if (WARN_ON(!intel_hdcp_in_use(dev_priv, tc, port))) {
 		DRM_ERROR("%s:%d HDCP link stopped encryption,%x\n",
 			  connector->base.name, connector->base.base.id,
-			  I915_READ(PORT_HDCP_STATUS(port)));
+			  I915_READ(HDCP_STATUS(dev_priv, tc, port)));
 		ret = -ENXIO;
 		hdcp->value = DRM_MODE_CONTENT_PROTECTION_DESIRED;
 		schedule_work(&hdcp->prop_work);
@@ -1493,10 +1513,11 @@ static int hdcp2_enable_encryption(struct intel_connector *connector)
 	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
 	struct intel_hdcp *hdcp = &connector->hdcp;
 	enum port port = connector->encoder->port;
+	enum transcoder tc = hdcp->trans;
 	int ret;
 
-	WARN_ON(I915_READ(HDCP2_STATUS_DDI(port)) & LINK_ENCRYPTION_STATUS);
-
+	WARN_ON(I915_READ(HDCP2_STATUS(dev_priv, tc, port)) &
+		LINK_ENCRYPTION_STATUS);
 	if (hdcp->shim->toggle_signalling) {
 		ret = hdcp->shim->toggle_signalling(intel_dig_port, true);
 		if (ret) {
@@ -1506,14 +1527,14 @@ static int hdcp2_enable_encryption(struct intel_connector *connector)
 		}
 	}
 
-	if (I915_READ(HDCP2_STATUS_DDI(port)) & LINK_AUTH_STATUS) {
+	if (I915_READ(HDCP2_STATUS(dev_priv, tc, port)) & LINK_AUTH_STATUS) {
 		/* Link is Authenticated. Now set for Encryption */
-		I915_WRITE(HDCP2_CTL_DDI(port),
-			   I915_READ(HDCP2_CTL_DDI(port)) |
+		I915_WRITE(HDCP2_CTL(dev_priv, tc, port),
+			   I915_READ(HDCP2_CTL(dev_priv, tc, port)) |
 			   CTL_LINK_ENCRYPTION_REQ);
 	}
 
-	ret = intel_de_wait_for_set(dev_priv, HDCP2_STATUS_DDI(port),
+	ret = intel_de_wait_for_set(dev_priv, HDCP2_STATUS(dev_priv, tc, port),
 				    LINK_ENCRYPTION_STATUS,
 				    ENCRYPT_STATUS_CHANGE_TIMEOUT_MS);
 
@@ -1526,14 +1547,18 @@ static int hdcp2_disable_encryption(struct intel_connector *connector)
 	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
 	struct intel_hdcp *hdcp = &connector->hdcp;
 	enum port port = connector->encoder->port;
+	enum transcoder tc = hdcp->trans;
 	int ret;
 
-	WARN_ON(!(I915_READ(HDCP2_STATUS_DDI(port)) & LINK_ENCRYPTION_STATUS));
+	WARN_ON(!(I915_READ(HDCP2_STATUS(dev_priv, tc, port)) &
+			    LINK_ENCRYPTION_STATUS));
 
-	I915_WRITE(HDCP2_CTL_DDI(port),
-		   I915_READ(HDCP2_CTL_DDI(port)) & ~CTL_LINK_ENCRYPTION_REQ);
+	I915_WRITE(HDCP2_CTL(dev_priv, tc, port),
+		   I915_READ(HDCP2_CTL(dev_priv, tc, port)) &
+		   ~CTL_LINK_ENCRYPTION_REQ);
 
-	ret = intel_de_wait_for_clear(dev_priv, HDCP2_STATUS_DDI(port),
+	ret = intel_de_wait_for_clear(dev_priv,
+				      HDCP2_STATUS(dev_priv, tc, port),
 				      LINK_ENCRYPTION_STATUS,
 				      ENCRYPT_STATUS_CHANGE_TIMEOUT_MS);
 	if (ret == -ETIMEDOUT)
@@ -1632,9 +1657,11 @@ static int intel_hdcp2_check_link(struct intel_connector *connector)
 	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
 	struct intel_hdcp *hdcp = &connector->hdcp;
 	enum port port = connector->encoder->port;
+	enum transcoder tc;
 	int ret = 0;
 
 	mutex_lock(&hdcp->mutex);
+	tc = hdcp->trans;
 
 	/* hdcp2_check_link is expected only when HDCP2.2 is Enabled */
 	if (hdcp->value != DRM_MODE_CONTENT_PROTECTION_ENABLED ||
@@ -1643,9 +1670,9 @@ static int intel_hdcp2_check_link(struct intel_connector *connector)
 		goto out;
 	}
 
-	if (WARN_ON(!intel_hdcp2_in_use(connector))) {
+	if (WARN_ON(!intel_hdcp2_in_use(dev_priv, tc, port))) {
 		DRM_ERROR("HDCP2.2 link stopped the encryption, %x\n",
-			  I915_READ(HDCP2_STATUS_DDI(port)));
+			  I915_READ(HDCP2_STATUS(dev_priv, tc, port)));
 		ret = -ENXIO;
 		hdcp->value = DRM_MODE_CONTENT_PROTECTION_DESIRED;
 		schedule_work(&hdcp->prop_work);
diff --git a/drivers/gpu/drm/i915/display/intel_hdmi.c b/drivers/gpu/drm/i915/display/intel_hdmi.c
index 6e9bb6bd1ee2..509c6826ae6b 100644
--- a/drivers/gpu/drm/i915/display/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/display/intel_hdmi.c
@@ -1491,7 +1491,10 @@ bool intel_hdmi_hdcp_check_link(struct intel_digital_port *intel_dig_port)
 {
 	struct drm_i915_private *dev_priv =
 		intel_dig_port->base.base.dev->dev_private;
+	struct intel_connector *connector =
+		intel_dig_port->hdmi.attached_connector;
 	enum port port = intel_dig_port->base.port;
+	enum transcoder tc = connector->hdcp.trans;
 	int ret;
 	union {
 		u32 reg;
@@ -1502,13 +1505,13 @@ bool intel_hdmi_hdcp_check_link(struct intel_digital_port *intel_dig_port)
 	if (ret)
 		return false;
 
-	I915_WRITE(PORT_HDCP_RPRIME(port), ri.reg);
+	I915_WRITE(HDCP_RPRIME(dev_priv, tc, port), ri.reg);
 
 	/* Wait for Ri prime match */
-	if (wait_for(I915_READ(PORT_HDCP_STATUS(port)) &
+	if (wait_for(I915_READ(HDCP_STATUS(dev_priv, tc, port)) &
 		     (HDCP_STATUS_RI_MATCH | HDCP_STATUS_ENC), 1)) {
 		DRM_ERROR("Ri' mismatch detected, link check failed (%x)\n",
-			  I915_READ(PORT_HDCP_STATUS(port)));
+			  I915_READ(HDCP_STATUS(dev_priv, tc, port)));
 		return false;
 	}
 	return true;
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 2abd199093c5..572e4cba847a 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -9256,12 +9256,20 @@ enum skl_power_gate {
 
 /* HDCP Repeater Registers */
 #define HDCP_REP_CTL			_MMIO(0x66d00)
+#define  HDCP_TRANSA_REP_PRESENT	BIT(31)
+#define  HDCP_TRANSB_REP_PRESENT	BIT(30)
+#define  HDCP_TRANSC_REP_PRESENT	BIT(29)
+#define  HDCP_TRANSD_REP_PRESENT	BIT(28)
 #define  HDCP_DDIB_REP_PRESENT		BIT(30)
 #define  HDCP_DDIA_REP_PRESENT		BIT(29)
 #define  HDCP_DDIC_REP_PRESENT		BIT(28)
 #define  HDCP_DDID_REP_PRESENT		BIT(27)
 #define  HDCP_DDIF_REP_PRESENT		BIT(26)
 #define  HDCP_DDIE_REP_PRESENT		BIT(25)
+#define  HDCP_TRANSA_SHA1_M0		(1 << 20)
+#define  HDCP_TRANSB_SHA1_M0		(2 << 20)
+#define  HDCP_TRANSC_SHA1_M0		(3 << 20)
+#define  HDCP_TRANSD_SHA1_M0		(4 << 20)
 #define  HDCP_DDIB_SHA1_M0		(1 << 20)
 #define  HDCP_DDIA_SHA1_M0		(2 << 20)
 #define  HDCP_DDIC_SHA1_M0		(3 << 20)
@@ -9301,15 +9309,92 @@ enum skl_power_gate {
 					  _PORTE_HDCP_AUTHENC, \
 					  _PORTF_HDCP_AUTHENC) + (x))
 #define PORT_HDCP_CONF(port)		_PORT_HDCP_AUTHENC(port, 0x0)
+#define _TRANSA_HDCP_CONF		0x66400
+#define _TRANSB_HDCP_CONF		0x66500
+#define TRANS_HDCP_CONF(trans)		_MMIO_TRANS(trans, _TRANSA_HDCP_CONF, \
+						    _TRANSB_HDCP_CONF)
+#define HDCP_CONF(dev_priv, trans, port) \
+					(INTEL_GEN(dev_priv) >= 12 ? \
+					 TRANS_HDCP_CONF(trans) : \
+					 PORT_HDCP_CONF(port))
+
 #define  HDCP_CONF_CAPTURE_AN		BIT(0)
 #define  HDCP_CONF_AUTH_AND_ENC		(BIT(1) | BIT(0))
 #define PORT_HDCP_ANINIT(port)		_PORT_HDCP_AUTHENC(port, 0x4)
+#define _TRANSA_HDCP_ANINIT		0x66404
+#define _TRANSB_HDCP_ANINIT		0x66504
+#define TRANS_HDCP_ANINIT(trans)	_MMIO_TRANS(trans, \
+						    _TRANSA_HDCP_ANINIT, \
+						    _TRANSB_HDCP_ANINIT)
+#define HDCP_ANINIT(dev_priv, trans, port) \
+					(INTEL_GEN(dev_priv) >= 12 ? \
+					 TRANS_HDCP_ANINIT(trans) : \
+					 PORT_HDCP_ANINIT(port))
+
 #define PORT_HDCP_ANLO(port)		_PORT_HDCP_AUTHENC(port, 0x8)
+#define _TRANSA_HDCP_ANLO		0x66408
+#define _TRANSB_HDCP_ANLO		0x66508
+#define TRANS_HDCP_ANLO(trans)		_MMIO_TRANS(trans, _TRANSA_HDCP_ANLO, \
+						    _TRANSB_HDCP_ANLO)
+#define HDCP_ANLO(dev_priv, trans, port) \
+					(INTEL_GEN(dev_priv) >= 12 ? \
+					 TRANS_HDCP_ANLO(trans) : \
+					 PORT_HDCP_ANLO(port))
+
 #define PORT_HDCP_ANHI(port)		_PORT_HDCP_AUTHENC(port, 0xC)
+#define _TRANSA_HDCP_ANHI		0x6640C
+#define _TRANSB_HDCP_ANHI		0x6650C
+#define TRANS_HDCP_ANHI(trans)		_MMIO_TRANS(trans, _TRANSA_HDCP_ANHI, \
+						    _TRANSB_HDCP_ANHI)
+#define HDCP_ANHI(dev_priv, trans, port) \
+					(INTEL_GEN(dev_priv) >= 12 ? \
+					 TRANS_HDCP_ANHI(trans) : \
+					 PORT_HDCP_ANHI(port))
+
 #define PORT_HDCP_BKSVLO(port)		_PORT_HDCP_AUTHENC(port, 0x10)
+#define _TRANSA_HDCP_BKSVLO		0x66410
+#define _TRANSB_HDCP_BKSVLO		0x66510
+#define TRANS_HDCP_BKSVLO(trans)	_MMIO_TRANS(trans, \
+						    _TRANSA_HDCP_BKSVLO, \
+						    _TRANSB_HDCP_BKSVLO)
+#define HDCP_BKSVLO(dev_priv, trans, port) \
+					(INTEL_GEN(dev_priv) >= 12 ? \
+					 TRANS_HDCP_BKSVLO(trans) : \
+					 PORT_HDCP_BKSVLO(port))
+
 #define PORT_HDCP_BKSVHI(port)		_PORT_HDCP_AUTHENC(port, 0x14)
+#define _TRANSA_HDCP_BKSVHI		0x66414
+#define _TRANSB_HDCP_BKSVHI		0x66514
+#define TRANS_HDCP_BKSVHI(trans)	_MMIO_TRANS(trans, \
+						    _TRANSA_HDCP_BKSVHI, \
+						    _TRANSB_HDCP_BKSVHI)
+#define HDCP_BKSVHI(dev_priv, trans, port) \
+					(INTEL_GEN(dev_priv) >= 12 ? \
+					 TRANS_HDCP_BKSVHI(trans) : \
+					 PORT_HDCP_BKSVHI(port))
+
 #define PORT_HDCP_RPRIME(port)		_PORT_HDCP_AUTHENC(port, 0x18)
+#define _TRANSA_HDCP_RPRIME		0x66418
+#define _TRANSB_HDCP_RPRIME		0x66518
+#define TRANS_HDCP_RPRIME(trans)	_MMIO_TRANS(trans, \
+						    _TRANSA_HDCP_RPRIME, \
+						    _TRANSB_HDCP_RPRIME)
+#define HDCP_RPRIME(dev_priv, trans, port) \
+					(INTEL_GEN(dev_priv) >= 12 ? \
+					 TRANS_HDCP_RPRIME(trans) : \
+					 PORT_HDCP_RPRIME(port))
+
 #define PORT_HDCP_STATUS(port)		_PORT_HDCP_AUTHENC(port, 0x1C)
+#define _TRANSA_HDCP_STATUS		0x6641C
+#define _TRANSB_HDCP_STATUS		0x6651C
+#define TRANS_HDCP_STATUS(trans)	_MMIO_TRANS(trans, \
+						    _TRANSA_HDCP_STATUS, \
+						    _TRANSB_HDCP_STATUS)
+#define HDCP_STATUS(dev_priv, trans, port) \
+					(INTEL_GEN(dev_priv) >= 12 ? \
+					 TRANS_HDCP_STATUS(trans) : \
+					 PORT_HDCP_STATUS(port))
+
 #define  HDCP_STATUS_STREAM_A_ENC	BIT(31)
 #define  HDCP_STATUS_STREAM_B_ENC	BIT(30)
 #define  HDCP_STATUS_STREAM_C_ENC	BIT(29)
@@ -9336,23 +9421,44 @@ enum skl_power_gate {
 					  _PORTD_HDCP2_BASE, \
 					  _PORTE_HDCP2_BASE, \
 					  _PORTF_HDCP2_BASE) + (x))
-
-#define HDCP2_AUTH_DDI(port)		_PORT_HDCP2_BASE(port, 0x98)
+#define PORT_HDCP2_AUTH(port)		_PORT_HDCP2_BASE(port, 0x98)
+#define _TRANSA_HDCP2_AUTH		0x66498
+#define _TRANSB_HDCP2_AUTH		0x66598
+#define TRANS_HDCP2_AUTH(trans)		_MMIO_TRANS(trans, _TRANSA_HDCP2_AUTH, \
+						    _TRANSB_HDCP2_AUTH)
 #define   AUTH_LINK_AUTHENTICATED	BIT(31)
 #define   AUTH_LINK_TYPE		BIT(30)
 #define   AUTH_FORCE_CLR_INPUTCTR	BIT(19)
 #define   AUTH_CLR_KEYS			BIT(18)
-
-#define HDCP2_CTL_DDI(port)		_PORT_HDCP2_BASE(port, 0xB0)
+#define HDCP2_AUTH(dev_priv, trans, port) \
+					(INTEL_GEN(dev_priv) >= 12 ? \
+					 TRANS_HDCP2_AUTH(trans) : \
+					 PORT_HDCP2_AUTH(port))
+
+#define PORT_HDCP2_CTL(port)		_PORT_HDCP2_BASE(port, 0xB0)
+#define _TRANSA_HDCP2_CTL		0x664B0
+#define _TRANSB_HDCP2_CTL		0x665B0
+#define TRANS_HDCP2_CTL(trans)		_MMIO_TRANS(trans, _TRANSA_HDCP2_CTL, \
+						    _TRANSB_HDCP2_CTL)
 #define   CTL_LINK_ENCRYPTION_REQ	BIT(31)
-
-#define HDCP2_STATUS_DDI(port)		_PORT_HDCP2_BASE(port, 0xB4)
-#define   STREAM_ENCRYPTION_STATUS_A	BIT(31)
-#define   STREAM_ENCRYPTION_STATUS_B	BIT(30)
-#define   STREAM_ENCRYPTION_STATUS_C	BIT(29)
+#define HDCP2_CTL(dev_priv, trans, port) \
+					(INTEL_GEN(dev_priv) >= 12 ? \
+					 TRANS_HDCP2_CTL(trans) : \
+					 PORT_HDCP2_CTL(port))
+
+#define PORT_HDCP2_STATUS(port)		_PORT_HDCP2_BASE(port, 0xB4)
+#define _TRANSA_HDCP2_STATUS		0x664B4
+#define _TRANSB_HDCP2_STATUS		0x665B4
+#define TRANS_HDCP2_STATUS(trans)	_MMIO_TRANS(trans, \
+						    _TRANSA_HDCP2_STATUS, \
+						    _TRANSB_HDCP2_STATUS)
 #define   LINK_TYPE_STATUS		BIT(22)
 #define   LINK_AUTH_STATUS		BIT(21)
 #define   LINK_ENCRYPTION_STATUS	BIT(20)
+#define HDCP2_STATUS(dev_priv, trans, port) \
+					(INTEL_GEN(dev_priv) >= 12 ? \
+					 TRANS_HDCP2_STATUS(trans) : \
+					 PORT_HDCP2_STATUS(port))
 
 /* Per-pipe DDI Function Control */
 #define _TRANS_DDI_FUNC_CTL_A		0x60400
-- 
2.20.1

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Re: [PATCH v7 6/6] drm/i915/hdcp: Enable HDCP 1.4 and 2.2 on Gen12+

[Jani Nikula]

On Thu, 22 Aug 2019, Ramalingam C <ramalingam.c@intel.com> wrote:
> From Gen12 onwards, HDCP HW block is implemented within transcoders.
> Till Gen11 HDCP HW block was part of DDI.
>
> Hence required changes in HW programming is handled here.
>
> As ME FW needs the transcoder detail on which HDCP is enabled
> on Gen12+ platform, we are populating the detail in hdcp_port_data.
>
> v2:
>   _MMIO_TRANS is used [Lucas and Daniel]
>   platform check is moved into the caller [Lucas]
> v3:
>   platform check is moved into a macro [Shashank]
> v4:
>   Few optimizations in the coding [Shashank]
> v5:
>   Fixed alignment in macro definition in i915_reg.h [Shashank]
>   unused variables "reg" is removed.
> v6:
>   Configuring the transcoder at compute_config.
>   transcoder is used instead of pipe in macros.
>   Rebased.
> v7:
>   transcoder is cached at intel_hdcp
>   hdcp_port_data is configured with transcoder index asper ME FW.
>
> Signed-off-by: Ramalingam C <ramalingam.c@intel.com>
> Reviewed-by: Shashank Sharma <shashank.sharma@intel.com> [v5]
> ---
>  drivers/gpu/drm/i915/display/intel_hdcp.c | 129 +++++++++++++---------
>  drivers/gpu/drm/i915/display/intel_hdmi.c |   9 +-
>  drivers/gpu/drm/i915/i915_reg.h           | 124 +++++++++++++++++++--
>  3 files changed, 199 insertions(+), 63 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/display/intel_hdcp.c b/drivers/gpu/drm/i915/display/intel_hdcp.c
> index 264bda5d484c..80df581a0bfd 100644
> --- a/drivers/gpu/drm/i915/display/intel_hdcp.c
> +++ b/drivers/gpu/drm/i915/display/intel_hdcp.c
> @@ -18,6 +18,7 @@
>  #include "intel_display_types.h"
>  #include "intel_hdcp.h"
>  #include "intel_sideband.h"
> +#include "intel_connector.h"
>  
>  #define KEY_LOAD_TRIES	5
>  #define ENCRYPT_STATUS_CHANGE_TIMEOUT_MS	50
> @@ -105,24 +106,17 @@ bool intel_hdcp2_capable(struct intel_connector *connector)
>  	return capable;
>  }
>  
> -static inline bool intel_hdcp_in_use(struct intel_connector *connector)
> +static inline bool intel_hdcp_in_use(struct drm_i915_private *dev_priv,
> +				     enum transcoder tc, enum port port)

enum transcoder trancoder or enum transcoder cpu_transcoder.

same throughout.

BR,
Jani.

>  {
> -	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
> -	enum port port = connector->encoder->port;
> -	u32 reg;
> -
> -	reg = I915_READ(PORT_HDCP_STATUS(port));
> -	return reg & HDCP_STATUS_ENC;
> +	return I915_READ(HDCP_STATUS(dev_priv, tc, port)) & HDCP_STATUS_ENC;
>  }
>  
> -static inline bool intel_hdcp2_in_use(struct intel_connector *connector)
> +static inline bool intel_hdcp2_in_use(struct drm_i915_private *dev_priv,
> +				      enum transcoder tc, enum port port)
>  {
> -	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
> -	enum port port = connector->encoder->port;
> -	u32 reg;
> -
> -	reg = I915_READ(HDCP2_STATUS_DDI(port));
> -	return reg & LINK_ENCRYPTION_STATUS;
> +	return I915_READ(HDCP2_STATUS(dev_priv, tc, port)) &
> +	       LINK_ENCRYPTION_STATUS;
>  }
>  
>  static int intel_hdcp_poll_ksv_fifo(struct intel_digital_port *intel_dig_port,
> @@ -253,9 +247,28 @@ static int intel_write_sha_text(struct drm_i915_private *dev_priv, u32 sha_text)
>  }
>  
>  static
> -u32 intel_hdcp_get_repeater_ctl(struct intel_digital_port *intel_dig_port)
> +u32 intel_hdcp_get_repeater_ctl(struct drm_i915_private *dev_priv,
> +				enum transcoder tc, enum port port)
>  {
> -	enum port port = intel_dig_port->base.port;
> +	if (INTEL_GEN(dev_priv) >= 12) {
> +		switch (tc) {
> +		case TRANSCODER_A:
> +			return HDCP_TRANSA_REP_PRESENT |
> +			       HDCP_TRANSA_SHA1_M0;
> +		case TRANSCODER_B:
> +			return HDCP_TRANSB_REP_PRESENT |
> +			       HDCP_TRANSB_SHA1_M0;
> +		case TRANSCODER_C:
> +			return HDCP_TRANSC_REP_PRESENT |
> +			       HDCP_TRANSC_SHA1_M0;
> +		/* FIXME: Add a case for PIPE_D */
> +		default:
> +			DRM_ERROR("Unknown transcoder %d\n", tc);
> +			break;
> +		}
> +		return -EINVAL;
> +	}
> +
>  	switch (port) {
>  	case PORT_A:
>  		return HDCP_DDIA_REP_PRESENT | HDCP_DDIA_SHA1_M0;
> @@ -268,18 +281,21 @@ u32 intel_hdcp_get_repeater_ctl(struct intel_digital_port *intel_dig_port)
>  	case PORT_E:
>  		return HDCP_DDIE_REP_PRESENT | HDCP_DDIE_SHA1_M0;
>  	default:
> +		DRM_ERROR("Unknown port %d\n", port);
>  		break;
>  	}
> -	DRM_ERROR("Unknown port %d\n", port);
>  	return -EINVAL;
>  }
>  
>  static
> -int intel_hdcp_validate_v_prime(struct intel_digital_port *intel_dig_port,
> +int intel_hdcp_validate_v_prime(struct intel_connector *connector,
>  				const struct intel_hdcp_shim *shim,
>  				u8 *ksv_fifo, u8 num_downstream, u8 *bstatus)
>  {
> +	struct intel_digital_port *intel_dig_port = conn_to_dig_port(connector);
>  	struct drm_i915_private *dev_priv;
> +	enum transcoder tc = connector->hdcp.trans;
> +	enum port port = intel_dig_port->base.port;
>  	u32 vprime, sha_text, sha_leftovers, rep_ctl;
>  	int ret, i, j, sha_idx;
>  
> @@ -306,7 +322,7 @@ int intel_hdcp_validate_v_prime(struct intel_digital_port *intel_dig_port,
>  	sha_idx = 0;
>  	sha_text = 0;
>  	sha_leftovers = 0;
> -	rep_ctl = intel_hdcp_get_repeater_ctl(intel_dig_port);
> +	rep_ctl = intel_hdcp_get_repeater_ctl(dev_priv, tc, port);
>  	I915_WRITE(HDCP_REP_CTL, rep_ctl | HDCP_SHA1_TEXT_32);
>  	for (i = 0; i < num_downstream; i++) {
>  		unsigned int sha_empty;
> @@ -548,7 +564,7 @@ int intel_hdcp_auth_downstream(struct intel_connector *connector)
>  	 * V prime atleast twice.
>  	 */
>  	for (i = 0; i < tries; i++) {
> -		ret = intel_hdcp_validate_v_prime(intel_dig_port, shim,
> +		ret = intel_hdcp_validate_v_prime(connector, shim,
>  						  ksv_fifo, num_downstream,
>  						  bstatus);
>  		if (!ret)
> @@ -576,6 +592,7 @@ static int intel_hdcp_auth(struct intel_connector *connector)
>  	struct drm_device *dev = connector->base.dev;
>  	const struct intel_hdcp_shim *shim = hdcp->shim;
>  	struct drm_i915_private *dev_priv;
> +	enum transcoder tc = connector->hdcp.trans;
>  	enum port port;
>  	unsigned long r0_prime_gen_start;
>  	int ret, i, tries = 2;
> @@ -615,18 +632,18 @@ static int intel_hdcp_auth(struct intel_connector *connector)
>  
>  	/* Initialize An with 2 random values and acquire it */
>  	for (i = 0; i < 2; i++)
> -		I915_WRITE(PORT_HDCP_ANINIT(port), get_random_u32());
> -	I915_WRITE(PORT_HDCP_CONF(port), HDCP_CONF_CAPTURE_AN);
> +		I915_WRITE(HDCP_ANINIT(dev_priv, tc, port), get_random_u32());
> +	I915_WRITE(HDCP_CONF(dev_priv, tc, port), HDCP_CONF_CAPTURE_AN);
>  
>  	/* Wait for An to be acquired */
> -	if (intel_de_wait_for_set(dev_priv, PORT_HDCP_STATUS(port),
> +	if (intel_de_wait_for_set(dev_priv, HDCP_STATUS(dev_priv, tc, port),
>  				  HDCP_STATUS_AN_READY, 1)) {
>  		DRM_ERROR("Timed out waiting for An\n");
>  		return -ETIMEDOUT;
>  	}
>  
> -	an.reg[0] = I915_READ(PORT_HDCP_ANLO(port));
> -	an.reg[1] = I915_READ(PORT_HDCP_ANHI(port));
> +	an.reg[0] = I915_READ(HDCP_ANLO(dev_priv, tc, port));
> +	an.reg[1] = I915_READ(HDCP_ANHI(dev_priv, tc, port));
>  	ret = shim->write_an_aksv(intel_dig_port, an.shim);
>  	if (ret)
>  		return ret;
> @@ -644,24 +661,24 @@ static int intel_hdcp_auth(struct intel_connector *connector)
>  		return -EPERM;
>  	}
>  
> -	I915_WRITE(PORT_HDCP_BKSVLO(port), bksv.reg[0]);
> -	I915_WRITE(PORT_HDCP_BKSVHI(port), bksv.reg[1]);
> +	I915_WRITE(HDCP_BKSVLO(dev_priv, tc, port), bksv.reg[0]);
> +	I915_WRITE(HDCP_BKSVHI(dev_priv, tc, port), bksv.reg[1]);
>  
>  	ret = shim->repeater_present(intel_dig_port, &repeater_present);
>  	if (ret)
>  		return ret;
>  	if (repeater_present)
>  		I915_WRITE(HDCP_REP_CTL,
> -			   intel_hdcp_get_repeater_ctl(intel_dig_port));
> +			   intel_hdcp_get_repeater_ctl(dev_priv, tc, port));
>  
>  	ret = shim->toggle_signalling(intel_dig_port, true);
>  	if (ret)
>  		return ret;
>  
> -	I915_WRITE(PORT_HDCP_CONF(port), HDCP_CONF_AUTH_AND_ENC);
> +	I915_WRITE(HDCP_CONF(dev_priv, tc, port), HDCP_CONF_AUTH_AND_ENC);
>  
>  	/* Wait for R0 ready */
> -	if (wait_for(I915_READ(PORT_HDCP_STATUS(port)) &
> +	if (wait_for(I915_READ(HDCP_STATUS(dev_priv, tc, port)) &
>  		     (HDCP_STATUS_R0_READY | HDCP_STATUS_ENC), 1)) {
>  		DRM_ERROR("Timed out waiting for R0 ready\n");
>  		return -ETIMEDOUT;
> @@ -689,22 +706,22 @@ static int intel_hdcp_auth(struct intel_connector *connector)
>  		ret = shim->read_ri_prime(intel_dig_port, ri.shim);
>  		if (ret)
>  			return ret;
> -		I915_WRITE(PORT_HDCP_RPRIME(port), ri.reg);
> +		I915_WRITE(HDCP_RPRIME(dev_priv, tc, port), ri.reg);
>  
>  		/* Wait for Ri prime match */
> -		if (!wait_for(I915_READ(PORT_HDCP_STATUS(port)) &
> +		if (!wait_for(I915_READ(HDCP_STATUS(dev_priv, tc, port)) &
>  		    (HDCP_STATUS_RI_MATCH | HDCP_STATUS_ENC), 1))
>  			break;
>  	}
>  
>  	if (i == tries) {
>  		DRM_DEBUG_KMS("Timed out waiting for Ri prime match (%x)\n",
> -			      I915_READ(PORT_HDCP_STATUS(port)));
> +			      I915_READ(HDCP_STATUS(dev_priv, tc, port)));
>  		return -ETIMEDOUT;
>  	}
>  
>  	/* Wait for encryption confirmation */
> -	if (intel_de_wait_for_set(dev_priv, PORT_HDCP_STATUS(port),
> +	if (intel_de_wait_for_set(dev_priv, HDCP_STATUS(dev_priv, tc, port),
>  				  HDCP_STATUS_ENC,
>  				  ENCRYPT_STATUS_CHANGE_TIMEOUT_MS)) {
>  		DRM_ERROR("Timed out waiting for encryption\n");
> @@ -729,15 +746,16 @@ static int _intel_hdcp_disable(struct intel_connector *connector)
>  	struct drm_i915_private *dev_priv = connector->base.dev->dev_private;
>  	struct intel_digital_port *intel_dig_port = conn_to_dig_port(connector);
>  	enum port port = intel_dig_port->base.port;
> +	enum transcoder tc = hdcp->trans;
>  	int ret;
>  
>  	DRM_DEBUG_KMS("[%s:%d] HDCP is being disabled...\n",
>  		      connector->base.name, connector->base.base.id);
>  
>  	hdcp->hdcp_encrypted = false;
> -	I915_WRITE(PORT_HDCP_CONF(port), 0);
> -	if (intel_de_wait_for_clear(dev_priv, PORT_HDCP_STATUS(port), ~0,
> -				    ENCRYPT_STATUS_CHANGE_TIMEOUT_MS)) {
> +	I915_WRITE(HDCP_CONF(dev_priv, tc, port), 0);
> +	if (intel_de_wait_for_clear(dev_priv, HDCP_STATUS(dev_priv, tc, port),
> +				    ~0, ENCRYPT_STATUS_CHANGE_TIMEOUT_MS)) {
>  		DRM_ERROR("Failed to disable HDCP, timeout clearing status\n");
>  		return -ETIMEDOUT;
>  	}
> @@ -808,9 +826,11 @@ static int intel_hdcp_check_link(struct intel_connector *connector)
>  	struct drm_i915_private *dev_priv = connector->base.dev->dev_private;
>  	struct intel_digital_port *intel_dig_port = conn_to_dig_port(connector);
>  	enum port port = intel_dig_port->base.port;
> +	enum transcoder tc;
>  	int ret = 0;
>  
>  	mutex_lock(&hdcp->mutex);
> +	tc = hdcp->trans;
>  
>  	/* Check_link valid only when HDCP1.4 is enabled */
>  	if (hdcp->value != DRM_MODE_CONTENT_PROTECTION_ENABLED ||
> @@ -819,10 +839,10 @@ static int intel_hdcp_check_link(struct intel_connector *connector)
>  		goto out;
>  	}
>  
> -	if (WARN_ON(!intel_hdcp_in_use(connector))) {
> +	if (WARN_ON(!intel_hdcp_in_use(dev_priv, tc, port))) {
>  		DRM_ERROR("%s:%d HDCP link stopped encryption,%x\n",
>  			  connector->base.name, connector->base.base.id,
> -			  I915_READ(PORT_HDCP_STATUS(port)));
> +			  I915_READ(HDCP_STATUS(dev_priv, tc, port)));
>  		ret = -ENXIO;
>  		hdcp->value = DRM_MODE_CONTENT_PROTECTION_DESIRED;
>  		schedule_work(&hdcp->prop_work);
> @@ -1493,10 +1513,11 @@ static int hdcp2_enable_encryption(struct intel_connector *connector)
>  	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
>  	struct intel_hdcp *hdcp = &connector->hdcp;
>  	enum port port = connector->encoder->port;
> +	enum transcoder tc = hdcp->trans;
>  	int ret;
>  
> -	WARN_ON(I915_READ(HDCP2_STATUS_DDI(port)) & LINK_ENCRYPTION_STATUS);
> -
> +	WARN_ON(I915_READ(HDCP2_STATUS(dev_priv, tc, port)) &
> +		LINK_ENCRYPTION_STATUS);
>  	if (hdcp->shim->toggle_signalling) {
>  		ret = hdcp->shim->toggle_signalling(intel_dig_port, true);
>  		if (ret) {
> @@ -1506,14 +1527,14 @@ static int hdcp2_enable_encryption(struct intel_connector *connector)
>  		}
>  	}
>  
> -	if (I915_READ(HDCP2_STATUS_DDI(port)) & LINK_AUTH_STATUS) {
> +	if (I915_READ(HDCP2_STATUS(dev_priv, tc, port)) & LINK_AUTH_STATUS) {
>  		/* Link is Authenticated. Now set for Encryption */
> -		I915_WRITE(HDCP2_CTL_DDI(port),
> -			   I915_READ(HDCP2_CTL_DDI(port)) |
> +		I915_WRITE(HDCP2_CTL(dev_priv, tc, port),
> +			   I915_READ(HDCP2_CTL(dev_priv, tc, port)) |
>  			   CTL_LINK_ENCRYPTION_REQ);
>  	}
>  
> -	ret = intel_de_wait_for_set(dev_priv, HDCP2_STATUS_DDI(port),
> +	ret = intel_de_wait_for_set(dev_priv, HDCP2_STATUS(dev_priv, tc, port),
>  				    LINK_ENCRYPTION_STATUS,
>  				    ENCRYPT_STATUS_CHANGE_TIMEOUT_MS);
>  
> @@ -1526,14 +1547,18 @@ static int hdcp2_disable_encryption(struct intel_connector *connector)
>  	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
>  	struct intel_hdcp *hdcp = &connector->hdcp;
>  	enum port port = connector->encoder->port;
> +	enum transcoder tc = hdcp->trans;
>  	int ret;
>  
> -	WARN_ON(!(I915_READ(HDCP2_STATUS_DDI(port)) & LINK_ENCRYPTION_STATUS));
> +	WARN_ON(!(I915_READ(HDCP2_STATUS(dev_priv, tc, port)) &
> +			    LINK_ENCRYPTION_STATUS));
>  
> -	I915_WRITE(HDCP2_CTL_DDI(port),
> -		   I915_READ(HDCP2_CTL_DDI(port)) & ~CTL_LINK_ENCRYPTION_REQ);
> +	I915_WRITE(HDCP2_CTL(dev_priv, tc, port),
> +		   I915_READ(HDCP2_CTL(dev_priv, tc, port)) &
> +		   ~CTL_LINK_ENCRYPTION_REQ);
>  
> -	ret = intel_de_wait_for_clear(dev_priv, HDCP2_STATUS_DDI(port),
> +	ret = intel_de_wait_for_clear(dev_priv,
> +				      HDCP2_STATUS(dev_priv, tc, port),
>  				      LINK_ENCRYPTION_STATUS,
>  				      ENCRYPT_STATUS_CHANGE_TIMEOUT_MS);
>  	if (ret == -ETIMEDOUT)
> @@ -1632,9 +1657,11 @@ static int intel_hdcp2_check_link(struct intel_connector *connector)
>  	struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
>  	struct intel_hdcp *hdcp = &connector->hdcp;
>  	enum port port = connector->encoder->port;
> +	enum transcoder tc;
>  	int ret = 0;
>  
>  	mutex_lock(&hdcp->mutex);
> +	tc = hdcp->trans;
>  
>  	/* hdcp2_check_link is expected only when HDCP2.2 is Enabled */
>  	if (hdcp->value != DRM_MODE_CONTENT_PROTECTION_ENABLED ||
> @@ -1643,9 +1670,9 @@ static int intel_hdcp2_check_link(struct intel_connector *connector)
>  		goto out;
>  	}
>  
> -	if (WARN_ON(!intel_hdcp2_in_use(connector))) {
> +	if (WARN_ON(!intel_hdcp2_in_use(dev_priv, tc, port))) {
>  		DRM_ERROR("HDCP2.2 link stopped the encryption, %x\n",
> -			  I915_READ(HDCP2_STATUS_DDI(port)));
> +			  I915_READ(HDCP2_STATUS(dev_priv, tc, port)));
>  		ret = -ENXIO;
>  		hdcp->value = DRM_MODE_CONTENT_PROTECTION_DESIRED;
>  		schedule_work(&hdcp->prop_work);
> diff --git a/drivers/gpu/drm/i915/display/intel_hdmi.c b/drivers/gpu/drm/i915/display/intel_hdmi.c
> index 6e9bb6bd1ee2..509c6826ae6b 100644
> --- a/drivers/gpu/drm/i915/display/intel_hdmi.c
> +++ b/drivers/gpu/drm/i915/display/intel_hdmi.c
> @@ -1491,7 +1491,10 @@ bool intel_hdmi_hdcp_check_link(struct intel_digital_port *intel_dig_port)
>  {
>  	struct drm_i915_private *dev_priv =
>  		intel_dig_port->base.base.dev->dev_private;
> +	struct intel_connector *connector =
> +		intel_dig_port->hdmi.attached_connector;
>  	enum port port = intel_dig_port->base.port;
> +	enum transcoder tc = connector->hdcp.trans;
>  	int ret;
>  	union {
>  		u32 reg;
> @@ -1502,13 +1505,13 @@ bool intel_hdmi_hdcp_check_link(struct intel_digital_port *intel_dig_port)
>  	if (ret)
>  		return false;
>  
> -	I915_WRITE(PORT_HDCP_RPRIME(port), ri.reg);
> +	I915_WRITE(HDCP_RPRIME(dev_priv, tc, port), ri.reg);
>  
>  	/* Wait for Ri prime match */
> -	if (wait_for(I915_READ(PORT_HDCP_STATUS(port)) &
> +	if (wait_for(I915_READ(HDCP_STATUS(dev_priv, tc, port)) &
>  		     (HDCP_STATUS_RI_MATCH | HDCP_STATUS_ENC), 1)) {
>  		DRM_ERROR("Ri' mismatch detected, link check failed (%x)\n",
> -			  I915_READ(PORT_HDCP_STATUS(port)));
> +			  I915_READ(HDCP_STATUS(dev_priv, tc, port)));
>  		return false;
>  	}
>  	return true;
> diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
> index 2abd199093c5..572e4cba847a 100644
> --- a/drivers/gpu/drm/i915/i915_reg.h
> +++ b/drivers/gpu/drm/i915/i915_reg.h
> @@ -9256,12 +9256,20 @@ enum skl_power_gate {
>  
>  /* HDCP Repeater Registers */
>  #define HDCP_REP_CTL			_MMIO(0x66d00)
> +#define  HDCP_TRANSA_REP_PRESENT	BIT(31)
> +#define  HDCP_TRANSB_REP_PRESENT	BIT(30)
> +#define  HDCP_TRANSC_REP_PRESENT	BIT(29)
> +#define  HDCP_TRANSD_REP_PRESENT	BIT(28)
>  #define  HDCP_DDIB_REP_PRESENT		BIT(30)
>  #define  HDCP_DDIA_REP_PRESENT		BIT(29)
>  #define  HDCP_DDIC_REP_PRESENT		BIT(28)
>  #define  HDCP_DDID_REP_PRESENT		BIT(27)
>  #define  HDCP_DDIF_REP_PRESENT		BIT(26)
>  #define  HDCP_DDIE_REP_PRESENT		BIT(25)
> +#define  HDCP_TRANSA_SHA1_M0		(1 << 20)
> +#define  HDCP_TRANSB_SHA1_M0		(2 << 20)
> +#define  HDCP_TRANSC_SHA1_M0		(3 << 20)
> +#define  HDCP_TRANSD_SHA1_M0		(4 << 20)
>  #define  HDCP_DDIB_SHA1_M0		(1 << 20)
>  #define  HDCP_DDIA_SHA1_M0		(2 << 20)
>  #define  HDCP_DDIC_SHA1_M0		(3 << 20)
> @@ -9301,15 +9309,92 @@ enum skl_power_gate {
>  					  _PORTE_HDCP_AUTHENC, \
>  					  _PORTF_HDCP_AUTHENC) + (x))
>  #define PORT_HDCP_CONF(port)		_PORT_HDCP_AUTHENC(port, 0x0)
> +#define _TRANSA_HDCP_CONF		0x66400
> +#define _TRANSB_HDCP_CONF		0x66500
> +#define TRANS_HDCP_CONF(trans)		_MMIO_TRANS(trans, _TRANSA_HDCP_CONF, \
> +						    _TRANSB_HDCP_CONF)
> +#define HDCP_CONF(dev_priv, trans, port) \
> +					(INTEL_GEN(dev_priv) >= 12 ? \
> +					 TRANS_HDCP_CONF(trans) : \
> +					 PORT_HDCP_CONF(port))
> +
>  #define  HDCP_CONF_CAPTURE_AN		BIT(0)
>  #define  HDCP_CONF_AUTH_AND_ENC		(BIT(1) | BIT(0))
>  #define PORT_HDCP_ANINIT(port)		_PORT_HDCP_AUTHENC(port, 0x4)
> +#define _TRANSA_HDCP_ANINIT		0x66404
> +#define _TRANSB_HDCP_ANINIT		0x66504
> +#define TRANS_HDCP_ANINIT(trans)	_MMIO_TRANS(trans, \
> +						    _TRANSA_HDCP_ANINIT, \
> +						    _TRANSB_HDCP_ANINIT)
> +#define HDCP_ANINIT(dev_priv, trans, port) \
> +					(INTEL_GEN(dev_priv) >= 12 ? \
> +					 TRANS_HDCP_ANINIT(trans) : \
> +					 PORT_HDCP_ANINIT(port))
> +
>  #define PORT_HDCP_ANLO(port)		_PORT_HDCP_AUTHENC(port, 0x8)
> +#define _TRANSA_HDCP_ANLO		0x66408
> +#define _TRANSB_HDCP_ANLO		0x66508
> +#define TRANS_HDCP_ANLO(trans)		_MMIO_TRANS(trans, _TRANSA_HDCP_ANLO, \
> +						    _TRANSB_HDCP_ANLO)
> +#define HDCP_ANLO(dev_priv, trans, port) \
> +					(INTEL_GEN(dev_priv) >= 12 ? \
> +					 TRANS_HDCP_ANLO(trans) : \
> +					 PORT_HDCP_ANLO(port))
> +
>  #define PORT_HDCP_ANHI(port)		_PORT_HDCP_AUTHENC(port, 0xC)
> +#define _TRANSA_HDCP_ANHI		0x6640C
> +#define _TRANSB_HDCP_ANHI		0x6650C
> +#define TRANS_HDCP_ANHI(trans)		_MMIO_TRANS(trans, _TRANSA_HDCP_ANHI, \
> +						    _TRANSB_HDCP_ANHI)
> +#define HDCP_ANHI(dev_priv, trans, port) \
> +					(INTEL_GEN(dev_priv) >= 12 ? \
> +					 TRANS_HDCP_ANHI(trans) : \
> +					 PORT_HDCP_ANHI(port))
> +
>  #define PORT_HDCP_BKSVLO(port)		_PORT_HDCP_AUTHENC(port, 0x10)
> +#define _TRANSA_HDCP_BKSVLO		0x66410
> +#define _TRANSB_HDCP_BKSVLO		0x66510
> +#define TRANS_HDCP_BKSVLO(trans)	_MMIO_TRANS(trans, \
> +						    _TRANSA_HDCP_BKSVLO, \
> +						    _TRANSB_HDCP_BKSVLO)
> +#define HDCP_BKSVLO(dev_priv, trans, port) \
> +					(INTEL_GEN(dev_priv) >= 12 ? \
> +					 TRANS_HDCP_BKSVLO(trans) : \
> +					 PORT_HDCP_BKSVLO(port))
> +
>  #define PORT_HDCP_BKSVHI(port)		_PORT_HDCP_AUTHENC(port, 0x14)
> +#define _TRANSA_HDCP_BKSVHI		0x66414
> +#define _TRANSB_HDCP_BKSVHI		0x66514
> +#define TRANS_HDCP_BKSVHI(trans)	_MMIO_TRANS(trans, \
> +						    _TRANSA_HDCP_BKSVHI, \
> +						    _TRANSB_HDCP_BKSVHI)
> +#define HDCP_BKSVHI(dev_priv, trans, port) \
> +					(INTEL_GEN(dev_priv) >= 12 ? \
> +					 TRANS_HDCP_BKSVHI(trans) : \
> +					 PORT_HDCP_BKSVHI(port))
> +
>  #define PORT_HDCP_RPRIME(port)		_PORT_HDCP_AUTHENC(port, 0x18)
> +#define _TRANSA_HDCP_RPRIME		0x66418
> +#define _TRANSB_HDCP_RPRIME		0x66518
> +#define TRANS_HDCP_RPRIME(trans)	_MMIO_TRANS(trans, \
> +						    _TRANSA_HDCP_RPRIME, \
> +						    _TRANSB_HDCP_RPRIME)
> +#define HDCP_RPRIME(dev_priv, trans, port) \
> +					(INTEL_GEN(dev_priv) >= 12 ? \
> +					 TRANS_HDCP_RPRIME(trans) : \
> +					 PORT_HDCP_RPRIME(port))
> +
>  #define PORT_HDCP_STATUS(port)		_PORT_HDCP_AUTHENC(port, 0x1C)
> +#define _TRANSA_HDCP_STATUS		0x6641C
> +#define _TRANSB_HDCP_STATUS		0x6651C
> +#define TRANS_HDCP_STATUS(trans)	_MMIO_TRANS(trans, \
> +						    _TRANSA_HDCP_STATUS, \
> +						    _TRANSB_HDCP_STATUS)
> +#define HDCP_STATUS(dev_priv, trans, port) \
> +					(INTEL_GEN(dev_priv) >= 12 ? \
> +					 TRANS_HDCP_STATUS(trans) : \
> +					 PORT_HDCP_STATUS(port))
> +
>  #define  HDCP_STATUS_STREAM_A_ENC	BIT(31)
>  #define  HDCP_STATUS_STREAM_B_ENC	BIT(30)
>  #define  HDCP_STATUS_STREAM_C_ENC	BIT(29)
> @@ -9336,23 +9421,44 @@ enum skl_power_gate {
>  					  _PORTD_HDCP2_BASE, \
>  					  _PORTE_HDCP2_BASE, \
>  					  _PORTF_HDCP2_BASE) + (x))
> -
> -#define HDCP2_AUTH_DDI(port)		_PORT_HDCP2_BASE(port, 0x98)
> +#define PORT_HDCP2_AUTH(port)		_PORT_HDCP2_BASE(port, 0x98)
> +#define _TRANSA_HDCP2_AUTH		0x66498
> +#define _TRANSB_HDCP2_AUTH		0x66598
> +#define TRANS_HDCP2_AUTH(trans)		_MMIO_TRANS(trans, _TRANSA_HDCP2_AUTH, \
> +						    _TRANSB_HDCP2_AUTH)
>  #define   AUTH_LINK_AUTHENTICATED	BIT(31)
>  #define   AUTH_LINK_TYPE		BIT(30)
>  #define   AUTH_FORCE_CLR_INPUTCTR	BIT(19)
>  #define   AUTH_CLR_KEYS			BIT(18)
> -
> -#define HDCP2_CTL_DDI(port)		_PORT_HDCP2_BASE(port, 0xB0)
> +#define HDCP2_AUTH(dev_priv, trans, port) \
> +					(INTEL_GEN(dev_priv) >= 12 ? \
> +					 TRANS_HDCP2_AUTH(trans) : \
> +					 PORT_HDCP2_AUTH(port))
> +
> +#define PORT_HDCP2_CTL(port)		_PORT_HDCP2_BASE(port, 0xB0)
> +#define _TRANSA_HDCP2_CTL		0x664B0
> +#define _TRANSB_HDCP2_CTL		0x665B0
> +#define TRANS_HDCP2_CTL(trans)		_MMIO_TRANS(trans, _TRANSA_HDCP2_CTL, \
> +						    _TRANSB_HDCP2_CTL)
>  #define   CTL_LINK_ENCRYPTION_REQ	BIT(31)
> -
> -#define HDCP2_STATUS_DDI(port)		_PORT_HDCP2_BASE(port, 0xB4)
> -#define   STREAM_ENCRYPTION_STATUS_A	BIT(31)
> -#define   STREAM_ENCRYPTION_STATUS_B	BIT(30)
> -#define   STREAM_ENCRYPTION_STATUS_C	BIT(29)
> +#define HDCP2_CTL(dev_priv, trans, port) \
> +					(INTEL_GEN(dev_priv) >= 12 ? \
> +					 TRANS_HDCP2_CTL(trans) : \
> +					 PORT_HDCP2_CTL(port))
> +
> +#define PORT_HDCP2_STATUS(port)		_PORT_HDCP2_BASE(port, 0xB4)
> +#define _TRANSA_HDCP2_STATUS		0x664B4
> +#define _TRANSB_HDCP2_STATUS		0x665B4
> +#define TRANS_HDCP2_STATUS(trans)	_MMIO_TRANS(trans, \
> +						    _TRANSA_HDCP2_STATUS, \
> +						    _TRANSB_HDCP2_STATUS)
>  #define   LINK_TYPE_STATUS		BIT(22)
>  #define   LINK_AUTH_STATUS		BIT(21)
>  #define   LINK_ENCRYPTION_STATUS	BIT(20)
> +#define HDCP2_STATUS(dev_priv, trans, port) \
> +					(INTEL_GEN(dev_priv) >= 12 ? \
> +					 TRANS_HDCP2_STATUS(trans) : \
> +					 PORT_HDCP2_STATUS(port))
>  
>  /* Per-pipe DDI Function Control */
>  #define _TRANS_DDI_FUNC_CTL_A		0x60400

-- 
Jani Nikula, Intel Open Source Graphics Center
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✗ Fi.CI.BAT: failure for drm/i915: Enable HDCP 1.4 and 2.2 on Gen12+ (rev5)

[Patchwork]

== Series Details ==

Series: drm/i915: Enable HDCP 1.4 and 2.2 on Gen12+ (rev5)
URL   : https://patchwork.freedesktop.org/series/63432/
State : failure

== Summary ==

CALL    scripts/checksyscalls.sh
  CALL    scripts/atomic/check-atomics.sh
  DESCEND  objtool
  CHK     include/generated/compile.h
  CC      drivers/gpu/drm/i915/display/intel_dvo.h.s
  CC      drivers/gpu/drm/i915/display/intel_crt.h.s
  CC      drivers/gpu/drm/i915/display/intel_gmbus.h.s
  CC      drivers/gpu/drm/i915/display/intel_display_types.h.s
  CC      drivers/gpu/drm/i915/display/intel_dsi.h.s
  CC      drivers/gpu/drm/i915/display/intel_atomic_plane.h.s
  CC      drivers/gpu/drm/i915/display/intel_combo_phy.h.s
  CC      drivers/gpu/drm/i915/display/intel_overlay.h.s
  CC      drivers/gpu/drm/i915/display/intel_panel.h.s
  CC      drivers/gpu/drm/i915/display/intel_dp_link_training.h.s
  CC      drivers/gpu/drm/i915/display/intel_dp_aux_backlight.h.s
  CC      drivers/gpu/drm/i915/display/intel_bios.h.s
  CC      drivers/gpu/drm/i915/display/intel_opregion.h.s
  CC      drivers/gpu/drm/i915/display/intel_lspcon.h.s
  CC      drivers/gpu/drm/i915/display/intel_dp_mst.h.s
  CC      drivers/gpu/drm/i915/display/intel_pipe_crc.h.s
  CC      drivers/gpu/drm/i915/display/intel_fifo_underrun.h.s
  CC      drivers/gpu/drm/i915/display/intel_display_power.h.s
  CC      drivers/gpu/drm/i915/display/intel_connector.h.s
  CC      drivers/gpu/drm/i915/display/intel_tv.h.s
  CC      drivers/gpu/drm/i915/display/intel_hdcp.h.s
In file included from <command-line>:0:0:
./drivers/gpu/drm/i915/display/intel_hdcp.h:23:12: error: ‘enum transcoder’ declared inside parameter list will not be visible outside of this definition or declaration [-Werror]
       enum transcoder trans);
            ^~~~~~~~~~
./drivers/gpu/drm/i915/display/intel_hdcp.h:28:64: error: ‘enum port’ declared inside parameter list will not be visible outside of this definition or declaration [-Werror]
 bool is_hdcp_supported(struct drm_i915_private *dev_priv, enum port port);
                                                                ^~~~
cc1: all warnings being treated as errors
scripts/Makefile.build:308: recipe for target 'drivers/gpu/drm/i915/display/intel_hdcp.h.s' failed
make[5]: *** [drivers/gpu/drm/i915/display/intel_hdcp.h.s] Error 1
scripts/Makefile.build:497: recipe for target 'drivers/gpu/drm/i915/display' failed
make[4]: *** [drivers/gpu/drm/i915/display] Error 2
scripts/Makefile.build:497: recipe for target 'drivers/gpu/drm/i915' failed
make[3]: *** [drivers/gpu/drm/i915] Error 2
scripts/Makefile.build:497: recipe for target 'drivers/gpu/drm' failed
make[2]: *** [drivers/gpu/drm] Error 2
scripts/Makefile.build:497: recipe for target 'drivers/gpu' failed
make[1]: *** [drivers/gpu] Error 2
Makefile:1083: recipe for target 'drivers' failed
make: *** [drivers] Error 2

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Re: [PATCH v7 0/6] drm/i915: Enable HDCP 1.4 and 2.2 on Gen12+

[Jani Nikula]

On Thu, 22 Aug 2019, Ramalingam C <ramalingam.c@intel.com> wrote:
> Enabling the HDCP1.4 and 2.2 on TGL by supporting the HW block movement
> from DDI into transcoder.
>
> v7:
>   port, transcoder definitions are kept within I915.
>   corresponding changes in i915-mei interface.

I had some superficial comments here and there, won't do detailed review
of the series, but I like this overall approach better than exposing the
definitions from i915.

Acked-by: Jani Nikula <jani.nikula@intel.com>


>
> Ramalingam C (6):
>   drm/i915: mei_hdcp: I915 sends ddi index as per ME FW
>   drm: port definition is moved back into i915 header
>   drm: I915 mei interface is extended for transcoder info
>   misc/mei/hdcp: transcoder index in port info
>   drm/i915/hdcp: updating the transcoder of the hdcp port
>   drm/i915/hdcp: Enable HDCP 1.4 and 2.2 on Gen12+
>
>  drivers/gpu/drm/i915/display/intel_bios.h     |   2 +
>  drivers/gpu/drm/i915/display/intel_display.h  |  18 ++
>  .../drm/i915/display/intel_display_types.h    |   7 +
>  drivers/gpu/drm/i915/display/intel_dp.c       |   3 +
>  drivers/gpu/drm/i915/display/intel_dp.h       |   1 +
>  drivers/gpu/drm/i915/display/intel_hdcp.c     | 191 +++++++++++++-----
>  drivers/gpu/drm/i915/display/intel_hdcp.h     |   2 +
>  drivers/gpu/drm/i915/display/intel_hdmi.c     |  12 +-
>  drivers/gpu/drm/i915/i915_reg.h               | 124 +++++++++++-
>  drivers/misc/mei/hdcp/mei_hdcp.c              |  45 ++---
>  drivers/misc/mei/hdcp/mei_hdcp.h              |  16 +-
>  include/drm/i915_drm.h                        |  18 --
>  include/drm/i915_mei_hdcp_interface.h         |  29 ++-
>  13 files changed, 348 insertions(+), 120 deletions(-)

-- 
Jani Nikula, Intel Open Source Graphics Center
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✗ Fi.CI.BUILD: failure for drm/i915: Enable HDCP 1.4 and 2.2 on Gen12+ (rev6)

[Patchwork]

== Series Details ==

Series: drm/i915: Enable HDCP 1.4 and 2.2 on Gen12+ (rev6)
URL   : https://patchwork.freedesktop.org/series/63432/
State : failure

== Summary ==

CALL    scripts/checksyscalls.sh
  CALL    scripts/atomic/check-atomics.sh
  DESCEND  objtool
  CHK     include/generated/compile.h
  CC      drivers/gpu/drm/i915/display/intel_dvo.h.s
  CC      drivers/gpu/drm/i915/display/intel_gmbus.h.s
  CC      drivers/gpu/drm/i915/display/intel_display_types.h.s
  CC      drivers/gpu/drm/i915/display/intel_dsi.h.s
  CC      drivers/gpu/drm/i915/display/intel_atomic_plane.h.s
  CC      drivers/gpu/drm/i915/display/intel_combo_phy.h.s
  CC      drivers/gpu/drm/i915/display/intel_overlay.h.s
  CC      drivers/gpu/drm/i915/display/intel_panel.h.s
  CC      drivers/gpu/drm/i915/display/intel_dp_link_training.h.s
  CC      drivers/gpu/drm/i915/display/intel_dp_aux_backlight.h.s
  CC      drivers/gpu/drm/i915/display/intel_bios.h.s
  CC      drivers/gpu/drm/i915/display/intel_opregion.h.s
  CC      drivers/gpu/drm/i915/display/intel_lspcon.h.s
  CC      drivers/gpu/drm/i915/display/intel_dp_mst.h.s
  CC      drivers/gpu/drm/i915/display/intel_pipe_crc.h.s
  CC      drivers/gpu/drm/i915/display/intel_fifo_underrun.h.s
  CC      drivers/gpu/drm/i915/display/intel_quirks.h.s
  CC      drivers/gpu/drm/i915/display/intel_display_power.h.s
  CC      drivers/gpu/drm/i915/display/intel_connector.h.s
  CC      drivers/gpu/drm/i915/display/intel_tv.h.s
  CC      drivers/gpu/drm/i915/display/intel_hdcp.h.s
  CC      drivers/gpu/drm/i915/display/intel_color.h.s
  CC      drivers/gpu/drm/i915/display/intel_dvo_dev.h.s
  CC      drivers/gpu/drm/i915/display/intel_sdvo_regs.h.s
  CC      drivers/gpu/drm/i915/display/intel_lpe_audio.h.s
  CC      drivers/gpu/drm/i915/display/intel_sdvo.h.s
In file included from <command-line>:0:0:
./drivers/gpu/drm/i915/display/intel_sdvo.h:21:29: error: ‘enum port’ declared inside parameter list will not be visible outside of this definition or declaration [-Werror]
        i915_reg_t reg, enum port port);
                             ^~~~
cc1: all warnings being treated as errors
scripts/Makefile.build:308: recipe for target 'drivers/gpu/drm/i915/display/intel_sdvo.h.s' failed
make[5]: *** [drivers/gpu/drm/i915/display/intel_sdvo.h.s] Error 1
scripts/Makefile.build:497: recipe for target 'drivers/gpu/drm/i915/display' failed
make[4]: *** [drivers/gpu/drm/i915/display] Error 2
scripts/Makefile.build:497: recipe for target 'drivers/gpu/drm/i915' failed
make[3]: *** [drivers/gpu/drm/i915] Error 2
scripts/Makefile.build:497: recipe for target 'drivers/gpu/drm' failed
make[2]: *** [drivers/gpu/drm] Error 2
scripts/Makefile.build:497: recipe for target 'drivers/gpu' failed
make[1]: *** [drivers/gpu] Error 2
Makefile:1083: recipe for target 'drivers' failed
make: *** [drivers] Error 2

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