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 
47 /* help functions for signal types manipulation */
dc_is_hdmi_tmds_signal(enum signal_type signal)48 static inline bool dc_is_hdmi_tmds_signal(enum signal_type signal)
49 {
50 	return (signal == SIGNAL_TYPE_HDMI_TYPE_A);
51 }
52 
dc_is_hdmi_signal(enum signal_type signal)53 static inline bool dc_is_hdmi_signal(enum signal_type signal)
54 {
55 	return (signal == SIGNAL_TYPE_HDMI_TYPE_A);
56 }
57 
dc_is_dp_sst_signal(enum signal_type signal)58 static inline bool dc_is_dp_sst_signal(enum signal_type signal)
59 {
60 	return (signal == SIGNAL_TYPE_DISPLAY_PORT ||
61 		signal == SIGNAL_TYPE_EDP);
62 }
63 
dc_is_dp_signal(enum signal_type signal)64 static inline bool dc_is_dp_signal(enum signal_type signal)
65 {
66 	return (signal == SIGNAL_TYPE_DISPLAY_PORT ||
67 		signal == SIGNAL_TYPE_EDP ||
68 		signal == SIGNAL_TYPE_DISPLAY_PORT_MST);
69 }
70 
dc_is_embedded_signal(enum signal_type signal)71 static inline bool dc_is_embedded_signal(enum signal_type signal)
72 {
73 	return (signal == SIGNAL_TYPE_EDP || signal == SIGNAL_TYPE_LVDS);
74 }
75 
dc_is_lvds_signal(enum signal_type signal)76 static inline bool dc_is_lvds_signal(enum signal_type signal)
77 {
78 	return (signal == SIGNAL_TYPE_LVDS);
79 }
80 
dc_is_dvi_signal(enum signal_type signal)81 static inline bool dc_is_dvi_signal(enum signal_type signal)
82 {
83 	switch (signal) {
84 	case SIGNAL_TYPE_DVI_SINGLE_LINK:
85 	case SIGNAL_TYPE_DVI_DUAL_LINK:
86 		return true;
87 	break;
88 	default:
89 		return false;
90 	}
91 }
92 
dc_is_dvi_single_link_signal(enum signal_type signal)93 static inline bool dc_is_dvi_single_link_signal(enum signal_type signal)
94 {
95 	return (signal == SIGNAL_TYPE_DVI_SINGLE_LINK);
96 }
97 
dc_is_dual_link_signal(enum signal_type signal)98 static inline bool dc_is_dual_link_signal(enum signal_type signal)
99 {
100 	return (signal == SIGNAL_TYPE_DVI_DUAL_LINK);
101 }
102 
dc_is_audio_capable_signal(enum signal_type signal)103 static inline bool dc_is_audio_capable_signal(enum signal_type signal)
104 {
105 	return (signal == SIGNAL_TYPE_DISPLAY_PORT ||
106 		signal == SIGNAL_TYPE_DISPLAY_PORT_MST ||
107 		dc_is_hdmi_signal(signal));
108 }
109 
dc_is_virtual_signal(enum signal_type signal)110 static inline bool dc_is_virtual_signal(enum signal_type signal)
111 {
112 	return (signal == SIGNAL_TYPE_VIRTUAL);
113 }
114 
115 #endif
116