projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 495eb7f8 SP |
1 | /* SPDX-License-Identifier: MIT */ |
| 2 | /* | |
| 3 | * Copyright (C) 2017 Google, Inc. | |
| 4 | * | |
| 5 | * Authors: | |
| 6 | * Sean Paul <seanpaul@chromium.org> | |
| 7 | */ | |
| 8 | ||
| 9 | #ifndef _DRM_HDCP_H_INCLUDED_ | |
| 10 | #define _DRM_HDCP_H_INCLUDED_ | |
| 11 | ||
| 12 | /* Period of hdcp checks (to ensure we're still authenticated) */ | |
| 13 | #define DRM_HDCP_CHECK_PERIOD_MS (128 * 16) | |
| 14 | ||
| 15 | /* Shared lengths/masks between HDMI/DVI/DisplayPort */ | |
| 16 | #define DRM_HDCP_AN_LEN 8 | |
| 17 | #define DRM_HDCP_BSTATUS_LEN 2 | |
| 18 | #define DRM_HDCP_KSV_LEN 5 | |
| 19 | #define DRM_HDCP_RI_LEN 2 | |
| 20 | #define DRM_HDCP_V_PRIME_PART_LEN 4 | |
| 21 | #define DRM_HDCP_V_PRIME_NUM_PARTS 5 | |
| 22 | #define DRM_HDCP_NUM_DOWNSTREAM(x) (x & 0x3f) | |
| 49d85d03 R |
23 | #define DRM_HDCP_MAX_CASCADE_EXCEEDED(x) (x & BIT(3)) |
| 24 | #define DRM_HDCP_MAX_DEVICE_EXCEEDED(x) (x & BIT(7)) | |
| 495eb7f8 SP |
25 | |
| 26 | /* Slave address for the HDCP registers in the receiver */ | |
| 27 | #define DRM_HDCP_DDC_ADDR 0x3A | |
| 28 | ||
| 29 | /* HDCP register offsets for HDMI/DVI devices */ | |
| 30 | #define DRM_HDCP_DDC_BKSV 0x00 | |
| 31 | #define DRM_HDCP_DDC_RI_PRIME 0x08 | |
| 32 | #define DRM_HDCP_DDC_AKSV 0x10 | |
| 33 | #define DRM_HDCP_DDC_AN 0x18 | |
| 34 | #define DRM_HDCP_DDC_V_PRIME(h) (0x20 + h * 4) | |
| 35 | #define DRM_HDCP_DDC_BCAPS 0x40 | |
| 36 | #define DRM_HDCP_DDC_BCAPS_REPEATER_PRESENT BIT(6) | |
| 37 | #define DRM_HDCP_DDC_BCAPS_KSV_FIFO_READY BIT(5) | |
| 38 | #define DRM_HDCP_DDC_BSTATUS 0x41 | |
| 39 | #define DRM_HDCP_DDC_KSV_FIFO 0x43 | |
| 40 | ||
| 41 | #endif |