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Commit 495eb7f8 authored by Sean Paul's avatar Sean Paul
Browse files

drm: Add some HDCP related #defines 



In preparation for implementing HDCP in i915, add some HDCP related
register offsets and defines. The dpcd register offsets will go in
drm_dp_helper.h whereas the ddc offsets along with generic HDCP stuff
will get stuffed in drm_hdcp.h, which is new.

Changes in v2:
- drm_hdcp.h gets MIT license (Daniel)
Changes in v3:
- None
Changes in v4:
- None
Changes in v5:
- None
Changes in v6:
- SPDX license

Cc: Daniel Vetter <daniel.vetter@intel.com>
Reviewed-by: default avatarRamalingam C <ramalingm.c@intel.com>
Signed-off-by: default avatarSean Paul <seanpaul@chromium.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20180108195545.218615-5-seanpaul@chromium.org
parent 24557865

include/drm/drm_dp_helper.h

+17 −0
Original line number Diff line number Diff line
@@ -836,6 +836,23 @@ 
#define DP_CEC_TX_MESSAGE_BUFFER               0x3020

#define DP_CEC_MESSAGE_BUFFER_LENGTH             0x10



#define DP_AUX_HDCP_BKSV		0x68000

#define DP_AUX_HDCP_RI_PRIME		0x68005

#define DP_AUX_HDCP_AKSV		0x68007

#define DP_AUX_HDCP_AN			0x6800C

#define DP_AUX_HDCP_V_PRIME(h)		(0x68014 + h * 4)

#define DP_AUX_HDCP_BCAPS		0x68028

# define DP_BCAPS_REPEATER_PRESENT	BIT(1)

# define DP_BCAPS_HDCP_CAPABLE		BIT(0)

#define DP_AUX_HDCP_BSTATUS		0x68029

# define DP_BSTATUS_REAUTH_REQ		BIT(3)

# define DP_BSTATUS_LINK_FAILURE	BIT(2)

# define DP_BSTATUS_R0_PRIME_READY	BIT(1)

# define DP_BSTATUS_READY		BIT(0)

#define DP_AUX_HDCP_BINFO		0x6802A

#define DP_AUX_HDCP_KSV_FIFO		0x6802C

#define DP_AUX_HDCP_AINFO		0x6803B



/* DP 1.2 Sideband message defines */

/* peer device type - DP 1.2a Table 2-92 */

#define DP_PEER_DEVICE_NONE		0x0

include/drm/drm_hdcp.h

0 → 100644
+39 −0
Original line number Diff line number Diff line 
/* SPDX-License-Identifier: MIT */

/*

 * Copyright (C) 2017 Google, Inc.

 *

 * Authors:

 * Sean Paul <seanpaul@chromium.org>

 */



#ifndef _DRM_HDCP_H_INCLUDED_

#define _DRM_HDCP_H_INCLUDED_



/* Period of hdcp checks (to ensure we're still authenticated) */

#define DRM_HDCP_CHECK_PERIOD_MS		(128 * 16)



/* Shared lengths/masks between HDMI/DVI/DisplayPort */

#define DRM_HDCP_AN_LEN				8

#define DRM_HDCP_BSTATUS_LEN			2

#define DRM_HDCP_KSV_LEN			5

#define DRM_HDCP_RI_LEN				2

#define DRM_HDCP_V_PRIME_PART_LEN		4

#define DRM_HDCP_V_PRIME_NUM_PARTS		5

#define DRM_HDCP_NUM_DOWNSTREAM(x)		(x & 0x3f)



/* Slave address for the HDCP registers in the receiver */

#define DRM_HDCP_DDC_ADDR			0x3A



/* HDCP register offsets for HDMI/DVI devices */

#define DRM_HDCP_DDC_BKSV			0x00

#define DRM_HDCP_DDC_RI_PRIME			0x08

#define DRM_HDCP_DDC_AKSV			0x10

#define DRM_HDCP_DDC_AN				0x18

#define DRM_HDCP_DDC_V_PRIME(h)			(0x20 + h * 4)

#define DRM_HDCP_DDC_BCAPS			0x40

#define  DRM_HDCP_DDC_BCAPS_REPEATER_PRESENT	BIT(6)

#define  DRM_HDCP_DDC_BCAPS_KSV_FIFO_READY	BIT(5)

#define DRM_HDCP_DDC_BSTATUS			0x41

#define DRM_HDCP_DDC_KSV_FIFO			0x43



#endif