109 lines
3.4 KiB
C
109 lines
3.4 KiB
C
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/*
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* include/uapi/video/nvhdcp.h
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*
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* nvhdcp.h: tegra dc hdcp declarations.
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*
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* Copyright (c) 2016-2020, NVIDIA CORPORATION, All rights reserved.
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*
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* This software is licensed under the terms of the GNU General Public
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* License version 2, as published by the Free Software Foundation, and
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* may be copied, distributed, and modified under those terms.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#ifndef __UAPI_LINUX_NVHDCP_H_
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#define __UAPI_LINUX_NVHDCP_H_
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#include <linux/fb.h>
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#include <linux/types.h>
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#include <asm-generic/ioctl.h>
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/* maximum receivers and repeaters connected at a time */
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#define TEGRA_NVHDCP_MAX_DEVS 127
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/* values for value_flags */
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#define TEGRA_NVHDCP_FLAG_AN 0x0001
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#define TEGRA_NVHDCP_FLAG_AKSV 0x0002
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#define TEGRA_NVHDCP_FLAG_BKSV 0x0004
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#define TEGRA_NVHDCP_FLAG_BSTATUS 0x0008 /* repeater status */
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#define TEGRA_NVHDCP_FLAG_CN 0x0010 /* c_n */
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#define TEGRA_NVHDCP_FLAG_CKSV 0x0020 /* c_ksv */
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#define TEGRA_NVHDCP_FLAG_DKSV 0x0040 /* d_ksv */
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#define TEGRA_NVHDCP_FLAG_KP 0x0080 /* k_prime */
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#define TEGRA_NVHDCP_FLAG_S 0x0100 /* hdcp_status */
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#define TEGRA_NVHDCP_FLAG_CS 0x0200 /* connection state */
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#define TEGRA_NVHDCP_FLAG_V 0x0400
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#define TEGRA_NVHDCP_FLAG_MP 0x0800
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#define TEGRA_NVHDCP_FLAG_BKSVLIST 0x1000
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/* values for packet_results */
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#define TEGRA_NVHDCP_RESULT_SUCCESS 0
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#define TEGRA_NVHDCP_RESULT_UNSUCCESSFUL 1
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#define TEGRA_NVHDCP_RESULT_PENDING 0x103
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#define TEGRA_NVHDCP_RESULT_LINK_FAILED 0xc0000013
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/* TODO: replace with -EINVAL */
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#define TEGRA_NVHDCP_RESULT_INVALID_PARAMETER 0xc000000d
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#define TEGRA_NVHDCP_RESULT_INVALID_PARAMETER_MIX 0xc0000030
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/* TODO: replace with -ENOMEM */
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#define TEGRA_NVHDCP_RESULT_NO_MEMORY 0xc0000017
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struct tegra_nvhdcp_packet {
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__u32 value_flags; // (IN/OUT)
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__u32 packet_results; // (OUT)
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__u64 c_n; // (IN) upstream exchange number
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__u64 c_ksv; // (IN)
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__u32 b_status; // (OUT) link/repeater status for HDMI
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__u64 hdcp_status; // (OUT) READ_S
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__u64 cs; // (OUT) Connection State
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__u64 k_prime; // (OUT)
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__u64 a_n; // (OUT)
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__u64 a_ksv; // (OUT)
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__u64 b_ksv; // (OUT)
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__u64 d_ksv; // (OUT)
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__u8 v_prime[20]; // (OUT) 160-bit
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__u64 m_prime; // (OUT)
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// (OUT) Valid KSVs in the bKsvList. Maximum is 127 devices
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__u32 num_bksv_list;
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// (OUT) Up to 127 receivers & repeaters
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__u64 bksv_list[TEGRA_NVHDCP_MAX_DEVS];
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__u32 hdcp22;
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__u32 port; /* (OUT) DP or HDMI */
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__u32 binfo; /* (OUT) link/repeater status for DP */
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__u32 sor; /* (OUT) SOR or SOR1 */
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};
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/* parameters to TEGRAIO_NVHDCP_SET_POLICY */
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#define TEGRA_NVHDCP_POLICY_ON_DEMAND 0
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#define TEGRA_NVHDCP_POLICY_ALWAYS_ON 1
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#define TEGRA_NVHDCP_POLICY_ALWAYS_OFF 2
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/* ioctls */
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#define TEGRAIO_NVHDCP_ON _IO('F', 0x70)
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#define TEGRAIO_NVHDCP_OFF _IO('F', 0x71)
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#define TEGRAIO_NVHDCP_SET_POLICY _IOW('F', 0x72, __u32)
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#define TEGRAIO_NVHDCP_READ_M _IOWR('F', 0x73, struct tegra_nvhdcp_packet)
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#define TEGRAIO_NVHDCP_READ_S _IOWR('F', 0x74, struct tegra_nvhdcp_packet)
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#define TEGRAIO_NVHDCP_RENEGOTIATE _IO('F', 0x75)
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#define TEGRAIO_NVHDCP_HDCP_STATE _IOR('F', 0x76, struct tegra_nvhdcp_packet)
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#define TEGRAIO_NVHDCP_RECV_CAPABLE _IOR('F', 0x77, __u32)
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/* distinguish between HDMI and DP ports */
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#define TEGRA_NVHDCP_PORT_DP 2
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#define TEGRA_NVHDCP_PORT_HDMI 3
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#endif
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