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 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 */ 76 static inline bool dc_is_hdmi_tmds_signal(enum signal_type signal) 77 { 78 return (signal == SIGNAL_TYPE_HDMI_TYPE_A); 79 } 80 81 static inline bool dc_is_hdmi_signal(enum signal_type signal) 82 { 83 return (signal == SIGNAL_TYPE_HDMI_TYPE_A); 84 } 85 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 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 99 static inline bool dc_is_embedded_signal(enum signal_type signal) 100 { 101 return (signal == SIGNAL_TYPE_EDP || signal == SIGNAL_TYPE_LVDS); 102 } 103 104 static inline bool dc_is_lvds_signal(enum signal_type signal) 105 { 106 return (signal == SIGNAL_TYPE_LVDS); 107 } 108 109 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 } 120 121 /** 122 * dc_is_rgb_signal() - Whether the signal is analog RGB. 123 * 124 * Returns whether the given signal type is an analog RGB signal 125 * that is used with a DAC on VGA or DVI-I connectors. 126 * Not to be confused with other uses of "RGB", such as RGB color space. 127 */ 128 static inline bool dc_is_rgb_signal(enum signal_type signal) 129 { 130 return (signal == SIGNAL_TYPE_RGB); 131 } 132 133 static inline bool dc_is_tmds_signal(enum signal_type signal) 134 { 135 switch (signal) { 136 case SIGNAL_TYPE_DVI_SINGLE_LINK: 137 case SIGNAL_TYPE_DVI_DUAL_LINK: 138 case SIGNAL_TYPE_HDMI_TYPE_A: 139 return true; 140 break; 141 default: 142 return false; 143 } 144 } 145 146 static inline bool dc_is_dvi_single_link_signal(enum signal_type signal) 147 { 148 return (signal == SIGNAL_TYPE_DVI_SINGLE_LINK); 149 } 150 151 static inline bool dc_is_dual_link_signal(enum signal_type signal) 152 { 153 return (signal == SIGNAL_TYPE_DVI_DUAL_LINK); 154 } 155 156 static inline bool dc_is_audio_capable_signal(enum signal_type signal) 157 { 158 return (signal == SIGNAL_TYPE_DISPLAY_PORT || 159 signal == SIGNAL_TYPE_DISPLAY_PORT_MST || 160 dc_is_hdmi_signal(signal)); 161 } 162 163 static inline bool dc_is_virtual_signal(enum signal_type signal) 164 { 165 return (signal == SIGNAL_TYPE_VIRTUAL); 166 } 167 168 #endif 169