dp_hw.h

 1/* SPDX-License-Identifier: GPL-2.0-or-later */
 2/* Copyright (c) 2024 Hisilicon Limited. */
 3
 4#ifndef DP_KAPI_H
 5#define DP_KAPI_H
 6
 7#include <linux/types.h>
 8#include <linux/delay.h>
 9#include <drm/drm_device.h>
10#include <drm/drm_encoder.h>
11#include <drm/drm_connector.h>
12#include <drm/drm_print.h>
13#include <drm/display/drm_dp_helper.h>
14
15struct hibmc_dp_dev;
16
17enum hibmc_hpd_status {
18	HIBMC_HPD_OUT,
19	HIBMC_HPD_IN,
20};
21
22enum hibmc_dp_cbar_pattern {
23	CBAR_COLOR_BAR,
24	CBAR_WHITE,
25	CBAR_RED,
26	CBAR_ORANGE,
27	CBAR_YELLOW,
28	CBAR_GREEN,
29	CBAR_CYAN,
30	CBAR_BLUE,
31	CBAR_PURPLE,
32	CBAR_BLACK,
33};
34
35struct hibmc_dp_color_raw {
36	enum hibmc_dp_cbar_pattern pattern;
37	u32 r_value;
38	u32 g_value;
39	u32 b_value;
40};
41
42struct hibmc_dp_cbar_cfg {
43	u8 enable;
44	u8 self_timing;
45	u8 dynamic_rate; /* 0:static, 1-255(frame):dynamic */
46	enum hibmc_dp_cbar_pattern pattern;
47};
48
49struct hibmc_dp {
50	struct hibmc_dp_dev *dp_dev;
51	struct drm_device *drm_dev;
52	struct drm_encoder encoder;
53	struct drm_connector connector;
54	void __iomem *mmio;
55	struct drm_dp_aux aux;
56	struct hibmc_dp_cbar_cfg cfg;
57	u32 irq_status;
58};
59
60int hibmc_dp_hw_init(struct hibmc_dp *dp);
61int hibmc_dp_mode_set(struct hibmc_dp *dp, struct drm_display_mode *mode);
62void hibmc_dp_display_en(struct hibmc_dp *dp, bool enable);
63void hibmc_dp_set_cbar(struct hibmc_dp *dp, const struct hibmc_dp_cbar_cfg *cfg);
64void hibmc_dp_reset_link(struct hibmc_dp *dp);
65void hibmc_dp_hpd_cfg(struct hibmc_dp *dp);
66void hibmc_dp_enable_int(struct hibmc_dp *dp);
67void hibmc_dp_disable_int(struct hibmc_dp *dp);
68bool hibmc_dp_check_hpd_status(struct hibmc_dp *dp, int exp_status);
69u8 hibmc_dp_get_link_rate(struct hibmc_dp *dp);
70u8 hibmc_dp_get_lanes(struct hibmc_dp *dp);
71
72#endif