Linux kernel mirror (for testing)
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1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 * Copyright (c) 2024, The Linux Foundation. All rights reserved.
4 */
5
6#ifndef _DP_UTILS_H_
7#define _DP_UTILS_H_
8
9#include <linux/bitfield.h>
10#include <linux/bits.h>
11#include <drm/display/drm_dp_helper.h>
12
13#define HEADER_BYTE_0_BIT 0
14#define PARITY_BYTE_0_BIT 8
15#define HEADER_BYTE_1_BIT 16
16#define PARITY_BYTE_1_BIT 24
17#define HEADER_BYTE_2_BIT 0
18#define PARITY_BYTE_2_BIT 8
19#define HEADER_BYTE_3_BIT 16
20#define PARITY_BYTE_3_BIT 24
21
22#define HEADER_0_MASK GENMASK(7, 0)
23#define PARITY_0_MASK GENMASK(15, 8)
24#define HEADER_1_MASK GENMASK(23, 16)
25#define PARITY_1_MASK GENMASK(31, 24)
26#define HEADER_2_MASK GENMASK(7, 0)
27#define PARITY_2_MASK GENMASK(15, 8)
28#define HEADER_3_MASK GENMASK(23, 16)
29#define PARITY_3_MASK GENMASK(31, 24)
30
31u8 msm_dp_utils_get_g0_value(u8 data);
32u8 msm_dp_utils_get_g1_value(u8 data);
33u8 msm_dp_utils_calculate_parity(u32 data);
34void msm_dp_utils_pack_sdp_header(struct dp_sdp_header *sdp_header, u32 header_buff[2]);
35
36#endif /* _DP_UTILS_H_ */