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/*
* include/video/nvhdcp.h
*
* Copyright (c) 2010-2011, NVIDIA Corporation.
*
* This software is licensed under the terms of the GNU General Public
* License version 2, as published by the Free Software Foundation, and
* may be copied, distributed, and modified under those terms.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*/
#ifndef _LINUX_NVHDCP_H_
#define _LINUX_NVHDCP_H_
#include <linux/fb.h>
#include <linux/types.h>
#include <asm/ioctl.h>
/* maximum receivers and repeaters connected at a time */
#define TEGRA_NVHDCP_MAX_DEVS 127
/* values for value_flags */
#define TEGRA_NVHDCP_FLAG_AN 0x0001
#define TEGRA_NVHDCP_FLAG_AKSV 0x0002
#define TEGRA_NVHDCP_FLAG_BKSV 0x0004
#define TEGRA_NVHDCP_FLAG_BSTATUS 0x0008 /* repeater status */
#define TEGRA_NVHDCP_FLAG_CN 0x0010 /* c_n */
#define TEGRA_NVHDCP_FLAG_CKSV 0x0020 /* c_ksv */
#define TEGRA_NVHDCP_FLAG_DKSV 0x0040 /* d_ksv */
#define TEGRA_NVHDCP_FLAG_KP 0x0080 /* k_prime */
#define TEGRA_NVHDCP_FLAG_S 0x0100 /* hdcp_status */
#define TEGRA_NVHDCP_FLAG_CS 0x0200 /* connection state */
#define TEGRA_NVHDCP_FLAG_V 0x0400
#define TEGRA_NVHDCP_FLAG_MP 0x0800
#define TEGRA_NVHDCP_FLAG_BKSVLIST 0x1000
/* values for packet_results */
#define TEGRA_NVHDCP_RESULT_SUCCESS 0
#define TEGRA_NVHDCP_RESULT_UNSUCCESSFUL 1
#define TEGRA_NVHDCP_RESULT_PENDING 0x103
#define TEGRA_NVHDCP_RESULT_LINK_FAILED 0xc0000013
/* TODO: replace with -EINVAL */
#define TEGRA_NVHDCP_RESULT_INVALID_PARAMETER 0xc000000d
#define TEGRA_NVHDCP_RESULT_INVALID_PARAMETER_MIX 0xc0000030
/* TODO: replace with -ENOMEM */
#define TEGRA_NVHDCP_RESULT_NO_MEMORY 0xc0000017
struct tegra_nvhdcp_packet {
__u32 value_flags; // (IN/OUT)
__u32 packet_results; // (OUT)
__u64 c_n; // (IN) upstream exchange number
__u64 c_ksv; // (IN)
__u32 b_status; // (OUT) link/repeater status
__u64 hdcp_status; // (OUT) READ_S
__u64 cs; // (OUT) Connection State
__u64 k_prime; // (OUT)
__u64 a_n; // (OUT)
__u64 a_ksv; // (OUT)
__u64 b_ksv; // (OUT)
__u64 d_ksv; // (OUT)
__u8 v_prime[20]; // (OUT) 160-bit
__u64 m_prime; // (OUT)
// (OUT) Valid KSVs in the bKsvList. Maximum is 127 devices
__u32 num_bksv_list;
// (OUT) Up to 127 receivers & repeaters
__u64 bksv_list[TEGRA_NVHDCP_MAX_DEVS];
};
/* parameters to TEGRAIO_NVHDCP_SET_POLICY */
#define TEGRA_NVHDCP_POLICY_ON_DEMAND 0
#define TEGRA_NVHDCP_POLICY_ALWAYS_ON 1
/* ioctls */
#define TEGRAIO_NVHDCP_ON _IO('F', 0x70)
#define TEGRAIO_NVHDCP_OFF _IO('F', 0x71)
#define TEGRAIO_NVHDCP_SET_POLICY _IOW('F', 0x72, __u32)
#define TEGRAIO_NVHDCP_READ_M _IOWR('F', 0x73, struct tegra_nvhdcp_packet)
#define TEGRAIO_NVHDCP_READ_S _IOWR('F', 0x74, struct tegra_nvhdcp_packet)
#define TEGRAIO_NVHDCP_RENEGOTIATE _IO('F', 0x75)
#endif
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