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 
34 enum 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 
signal_type_to_string(const int type)47 static 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 */
dc_is_hdmi_tmds_signal(enum signal_type signal)76 static inline bool dc_is_hdmi_tmds_signal(enum signal_type signal)
77 {
78 	return (signal == SIGNAL_TYPE_HDMI_TYPE_A);
79 }
80 
dc_is_hdmi_signal(enum signal_type signal)81 static inline bool dc_is_hdmi_signal(enum signal_type signal)
82 {
83 	return (signal == SIGNAL_TYPE_HDMI_TYPE_A);
84 }
85 
dc_is_dp_sst_signal(enum signal_type signal)86 static 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 
dc_is_dp_signal(enum signal_type signal)92 static 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 
dc_is_embedded_signal(enum signal_type signal)99 static inline bool dc_is_embedded_signal(enum signal_type signal)
100 {
101 	return (signal == SIGNAL_TYPE_EDP || signal == SIGNAL_TYPE_LVDS);
102 }
103 
dc_is_lvds_signal(enum signal_type signal)104 static inline bool dc_is_lvds_signal(enum signal_type signal)
105 {
106 	return (signal == SIGNAL_TYPE_LVDS);
107 }
108 
dc_is_dvi_signal(enum signal_type signal)109 static 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 
dc_is_dvi_single_link_signal(enum signal_type signal)121 static inline bool dc_is_dvi_single_link_signal(enum signal_type signal)
122 {
123 	return (signal == SIGNAL_TYPE_DVI_SINGLE_LINK);
124 }
125 
dc_is_dual_link_signal(enum signal_type signal)126 static inline bool dc_is_dual_link_signal(enum signal_type signal)
127 {
128 	return (signal == SIGNAL_TYPE_DVI_DUAL_LINK);
129 }
130 
dc_is_audio_capable_signal(enum signal_type signal)131 static 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 		signal == SIGNAL_TYPE_VIRTUAL ||
136 		dc_is_hdmi_signal(signal));
137 }
138 
dc_is_virtual_signal(enum signal_type signal)139 static inline bool dc_is_virtual_signal(enum signal_type signal)
140 {
141 	return (signal == SIGNAL_TYPE_VIRTUAL);
142 }
143 
144 #endif
145