1/*
2 * Copyright 2012-15 Advanced Micro Devices, Inc.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 * OTHER DEALINGS IN THE SOFTWARE.
21 *
22 * Authors: AMD
23 *
24 */
25
26#ifndef __DC_SIGNAL_TYPES_H__
27#define __DC_SIGNAL_TYPES_H__
28
29/* Minimum pixel clock, in KHz. For TMDS signal is 25.00 MHz */
30#define TMDS_MIN_PIXEL_CLOCK 25000
31/* Maximum pixel clock, in KHz. For TMDS signal is 165.00 MHz */
32#define TMDS_MAX_PIXEL_CLOCK 165000
33
34enum signal_type {
35	SIGNAL_TYPE_NONE		= 0L,		/* no signal */
36	SIGNAL_TYPE_DVI_SINGLE_LINK	= (1 << 0),
37	SIGNAL_TYPE_DVI_DUAL_LINK	= (1 << 1),
38	SIGNAL_TYPE_HDMI_TYPE_A		= (1 << 2),
39	SIGNAL_TYPE_LVDS		= (1 << 3),
40	SIGNAL_TYPE_RGB			= (1 << 4),
41	SIGNAL_TYPE_DISPLAY_PORT	= (1 << 5),
42	SIGNAL_TYPE_DISPLAY_PORT_MST	= (1 << 6),
43	SIGNAL_TYPE_EDP			= (1 << 7),
44	SIGNAL_TYPE_VIRTUAL		= (1 << 9),	/* Virtual Display */
45};
46
47static inline const char *signal_type_to_string(const int type)
48{
49	switch (type) {
50	case SIGNAL_TYPE_NONE:
51		return "No signal";
52	case SIGNAL_TYPE_DVI_SINGLE_LINK:
53		return "DVI: Single Link";
54	case SIGNAL_TYPE_DVI_DUAL_LINK:
55		return "DVI: Dual Link";
56	case SIGNAL_TYPE_HDMI_TYPE_A:
57		return "HDMI: TYPE A";
58	case SIGNAL_TYPE_LVDS:
59		return "LVDS";
60	case SIGNAL_TYPE_RGB:
61		return "RGB";
62	case SIGNAL_TYPE_DISPLAY_PORT:
63		return "Display Port";
64	case SIGNAL_TYPE_DISPLAY_PORT_MST:
65		return "Display Port: MST";
66	case SIGNAL_TYPE_EDP:
67		return "Embedded Display Port";
68	case SIGNAL_TYPE_VIRTUAL:
69		return "Virtual";
70	default:
71		return "Unknown";
72	}
73}
74
75/* help functions for signal types manipulation */
76static inline bool dc_is_hdmi_tmds_signal(enum signal_type signal)
77{
78	return (signal == SIGNAL_TYPE_HDMI_TYPE_A);
79}
80
81static inline bool dc_is_hdmi_signal(enum signal_type signal)
82{
83	return (signal == SIGNAL_TYPE_HDMI_TYPE_A);
84}
85
86static inline bool dc_is_dp_sst_signal(enum signal_type signal)
87{
88	return (signal == SIGNAL_TYPE_DISPLAY_PORT ||
89		signal == SIGNAL_TYPE_EDP);
90}
91
92static inline bool dc_is_dp_signal(enum signal_type signal)
93{
94	return (signal == SIGNAL_TYPE_DISPLAY_PORT ||
95		signal == SIGNAL_TYPE_EDP ||
96		signal == SIGNAL_TYPE_DISPLAY_PORT_MST);
97}
98
99static inline bool dc_is_embedded_signal(enum signal_type signal)
100{
101	return (signal == SIGNAL_TYPE_EDP || signal == SIGNAL_TYPE_LVDS);
102}
103
104static inline bool dc_is_lvds_signal(enum signal_type signal)
105{
106	return (signal == SIGNAL_TYPE_LVDS);
107}
108
109static inline bool dc_is_dvi_signal(enum signal_type signal)
110{
111	switch (signal) {
112	case SIGNAL_TYPE_DVI_SINGLE_LINK:
113	case SIGNAL_TYPE_DVI_DUAL_LINK:
114		return true;
115	break;
116	default:
117		return false;
118	}
119}
120
121static inline bool dc_is_dvi_single_link_signal(enum signal_type signal)
122{
123	return (signal == SIGNAL_TYPE_DVI_SINGLE_LINK);
124}
125
126static inline bool dc_is_dual_link_signal(enum signal_type signal)
127{
128	return (signal == SIGNAL_TYPE_DVI_DUAL_LINK);
129}
130
131static inline bool dc_is_audio_capable_signal(enum signal_type signal)
132{
133	return (signal == SIGNAL_TYPE_DISPLAY_PORT ||
134		signal == SIGNAL_TYPE_DISPLAY_PORT_MST ||
135		dc_is_hdmi_signal(signal));
136}
137
138static inline bool dc_is_virtual_signal(enum signal_type signal)
139{
140	return (signal == SIGNAL_TYPE_VIRTUAL);
141}
142
143#endif
144