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12#ifndef __EDID_H_
13#define __EDID_H_
14
15#include <linux/types.h>
16
17
18#define EDID_SIZE 128
19#define EDID_EXT_SIZE 256
20
21
22#define HDMI_IEEE_OUI 0x000c03
23
24#define GET_BIT(_x, _pos) \
25 (((_x) >> (_pos)) & 1)
26#define GET_BITS(_x, _pos_msb, _pos_lsb) \
27 (((_x) >> (_pos_lsb)) & ((1 << ((_pos_msb) - (_pos_lsb) + 1)) - 1))
28
29
30enum edid_aspect {
31 ASPECT_625 = 0,
32 ASPECT_75,
33 ASPECT_8,
34 ASPECT_5625,
35};
36
37
38struct edid_detailed_timing {
39 unsigned char pixel_clock[2];
40#define EDID_DETAILED_TIMING_PIXEL_CLOCK(_x) \
41 (((((uint32_t)(_x).pixel_clock[1]) << 8) + \
42 (_x).pixel_clock[0]) * 10000)
43 unsigned char horizontal_active;
44 unsigned char horizontal_blanking;
45 unsigned char horizontal_active_blanking_hi;
46#define EDID_DETAILED_TIMING_HORIZONTAL_ACTIVE(_x) \
47 ((GET_BITS((_x).horizontal_active_blanking_hi, 7, 4) << 8) + \
48 (_x).horizontal_active)
49#define EDID_DETAILED_TIMING_HORIZONTAL_BLANKING(_x) \
50 ((GET_BITS((_x).horizontal_active_blanking_hi, 3, 0) << 8) + \
51 (_x).horizontal_blanking)
52 unsigned char vertical_active;
53 unsigned char vertical_blanking;
54 unsigned char vertical_active_blanking_hi;
55#define EDID_DETAILED_TIMING_VERTICAL_ACTIVE(_x) \
56 ((GET_BITS((_x).vertical_active_blanking_hi, 7, 4) << 8) + \
57 (_x).vertical_active)
58#define EDID_DETAILED_TIMING_VERTICAL_BLANKING(_x) \
59 ((GET_BITS((_x).vertical_active_blanking_hi, 3, 0) << 8) + \
60 (_x).vertical_blanking)
61 unsigned char hsync_offset;
62 unsigned char hsync_pulse_width;
63 unsigned char vsync_offset_pulse_width;
64 unsigned char hsync_vsync_offset_pulse_width_hi;
65#define EDID_DETAILED_TIMING_HSYNC_OFFSET(_x) \
66 ((GET_BITS((_x).hsync_vsync_offset_pulse_width_hi, 7, 6) << 8) + \
67 (_x).hsync_offset)
68#define EDID_DETAILED_TIMING_HSYNC_PULSE_WIDTH(_x) \
69 ((GET_BITS((_x).hsync_vsync_offset_pulse_width_hi, 5, 4) << 8) + \
70 (_x).hsync_pulse_width)
71#define EDID_DETAILED_TIMING_VSYNC_OFFSET(_x) \
72 ((GET_BITS((_x).hsync_vsync_offset_pulse_width_hi, 3, 2) << 4) + \
73 GET_BITS((_x).vsync_offset_pulse_width, 7, 4))
74#define EDID_DETAILED_TIMING_VSYNC_PULSE_WIDTH(_x) \
75 ((GET_BITS((_x).hsync_vsync_offset_pulse_width_hi, 1, 0) << 4) + \
76 GET_BITS((_x).vsync_offset_pulse_width, 3, 0))
77 unsigned char himage_size;
78 unsigned char vimage_size;
79 unsigned char himage_vimage_size_hi;
80#define EDID_DETAILED_TIMING_HIMAGE_SIZE(_x) \
81 ((GET_BITS((_x).himage_vimage_size_hi, 7, 4) << 8) + (_x).himage_size)
82#define EDID_DETAILED_TIMING_VIMAGE_SIZE(_x) \
83 ((GET_BITS((_x).himage_vimage_size_hi, 3, 0) << 8) + (_x).vimage_size)
84 unsigned char hborder;
85 unsigned char vborder;
86 unsigned char flags;
87#define EDID_DETAILED_TIMING_FLAG_INTERLACED(_x) \
88 GET_BIT((_x).flags, 7)
89#define EDID_DETAILED_TIMING_FLAG_STEREO(_x) \
90 GET_BITS((_x).flags, 6, 5)
91#define EDID_DETAILED_TIMING_FLAG_DIGITAL_COMPOSITE(_x) \
92 GET_BITS((_x).flags, 4, 3)
93#define EDID_DETAILED_TIMING_FLAG_POLARITY(_x) \
94 GET_BITS((_x).flags, 2, 1)
95#define EDID_DETAILED_TIMING_FLAG_VSYNC_POLARITY(_x) \
96 GET_BIT((_x).flags, 2)
97#define EDID_DETAILED_TIMING_FLAG_HSYNC_POLARITY(_x) \
98 GET_BIT((_x).flags, 1)
99#define EDID_DETAILED_TIMING_FLAG_INTERLEAVED(_x) \
100 GET_BIT((_x).flags, 0)
101} __attribute__ ((__packed__));
102
103enum edid_monitor_descriptor_types {
104 EDID_MONITOR_DESCRIPTOR_SERIAL = 0xff,
105 EDID_MONITOR_DESCRIPTOR_ASCII = 0xfe,
106 EDID_MONITOR_DESCRIPTOR_RANGE = 0xfd,
107 EDID_MONITOR_DESCRIPTOR_NAME = 0xfc,
108};
109
110struct edid_monitor_descriptor {
111 uint16_t zero_flag_1;
112 unsigned char zero_flag_2;
113 unsigned char type;
114 unsigned char zero_flag_3;
115 union {
116 char string[13];
117 struct {
118 unsigned char vertical_min;
119 unsigned char vertical_max;
120 unsigned char horizontal_min;
121 unsigned char horizontal_max;
122 unsigned char pixel_clock_max;
123 unsigned char gtf_data[8];
124 } range_data;
125 } data;
126} __attribute__ ((__packed__));
127
128struct edid1_info {
129 unsigned char header[8];
130 unsigned char manufacturer_name[2];
131#define EDID1_INFO_MANUFACTURER_NAME_ZERO(_x) \
132 GET_BIT(((_x).manufacturer_name[0]), 7)
133#define EDID1_INFO_MANUFACTURER_NAME_CHAR1(_x) \
134 GET_BITS(((_x).manufacturer_name[0]), 6, 2)
135#define EDID1_INFO_MANUFACTURER_NAME_CHAR2(_x) \
136 ((GET_BITS(((_x).manufacturer_name[0]), 1, 0) << 3) + \
137 GET_BITS(((_x).manufacturer_name[1]), 7, 5))
138#define EDID1_INFO_MANUFACTURER_NAME_CHAR3(_x) \
139 GET_BITS(((_x).manufacturer_name[1]), 4, 0)
140 unsigned char product_code[2];
141#define EDID1_INFO_PRODUCT_CODE(_x) \
142 (((uint16_t)(_x).product_code[1] << 8) + (_x).product_code[0])
143 unsigned char serial_number[4];
144#define EDID1_INFO_SERIAL_NUMBER(_x) \
145 (((uint32_t)(_x).serial_number[3] << 24) + \
146 ((_x).serial_number[2] << 16) + ((_x).serial_number[1] << 8) + \
147 (_x).serial_number[0])
148 unsigned char week;
149 unsigned char year;
150 unsigned char version;
151 unsigned char revision;
152 unsigned char video_input_definition;
153#define EDID1_INFO_VIDEO_INPUT_DIGITAL(_x) \
154 GET_BIT(((_x).video_input_definition), 7)
155#define EDID1_INFO_VIDEO_INPUT_VOLTAGE_LEVEL(_x) \
156 GET_BITS(((_x).video_input_definition), 6, 5)
157#define EDID1_INFO_VIDEO_INPUT_BLANK_TO_BLACK(_x) \
158 GET_BIT(((_x).video_input_definition), 4)
159#define EDID1_INFO_VIDEO_INPUT_SEPARATE_SYNC(_x) \
160 GET_BIT(((_x).video_input_definition), 3)
161#define EDID1_INFO_VIDEO_INPUT_COMPOSITE_SYNC(_x) \
162 GET_BIT(((_x).video_input_definition), 2)
163#define EDID1_INFO_VIDEO_INPUT_SYNC_ON_GREEN(_x) \
164 GET_BIT(((_x).video_input_definition), 1)
165#define EDID1_INFO_VIDEO_INPUT_SERRATION_V(_x) \
166 GET_BIT(((_x).video_input_definition), 0)
167 unsigned char max_size_horizontal;
168 unsigned char max_size_vertical;
169 unsigned char gamma;
170 unsigned char feature_support;
171#define EDID1_INFO_FEATURE_STANDBY(_x) \
172 GET_BIT(((_x).feature_support), 7)
173#define EDID1_INFO_FEATURE_SUSPEND(_x) \
174 GET_BIT(((_x).feature_support), 6)
175#define EDID1_INFO_FEATURE_ACTIVE_OFF(_x) \
176 GET_BIT(((_x).feature_support), 5)
177#define EDID1_INFO_FEATURE_DISPLAY_TYPE(_x) \
178 GET_BITS(((_x).feature_support), 4, 3)
179#define EDID1_INFO_FEATURE_RGB(_x) \
180 GET_BIT(((_x).feature_support), 2)
181#define EDID1_INFO_FEATURE_PREFERRED_TIMING_MODE(_x) \
182 GET_BIT(((_x).feature_support), 1)
183#define EDID1_INFO_FEATURE_DEFAULT_GTF_SUPPORT(_x) \
184 GET_BIT(((_x).feature_support), 0)
185 unsigned char color_characteristics[10];
186 unsigned char established_timings[3];
187#define EDID1_INFO_ESTABLISHED_TIMING_720X400_70(_x) \
188 GET_BIT(((_x).established_timings[0]), 7)
189#define EDID1_INFO_ESTABLISHED_TIMING_720X400_88(_x) \
190 GET_BIT(((_x).established_timings[0]), 6)
191#define EDID1_INFO_ESTABLISHED_TIMING_640X480_60(_x) \
192 GET_BIT(((_x).established_timings[0]), 5)
193#define EDID1_INFO_ESTABLISHED_TIMING_640X480_67(_x) \
194 GET_BIT(((_x).established_timings[0]), 4)
195#define EDID1_INFO_ESTABLISHED_TIMING_640X480_72(_x) \
196 GET_BIT(((_x).established_timings[0]), 3)
197#define EDID1_INFO_ESTABLISHED_TIMING_640X480_75(_x) \
198 GET_BIT(((_x).established_timings[0]), 2)
199#define EDID1_INFO_ESTABLISHED_TIMING_800X600_56(_x) \
200 GET_BIT(((_x).established_timings[0]), 1)
201#define EDID1_INFO_ESTABLISHED_TIMING_800X600_60(_x) \
202 GET_BIT(((_x).established_timings[0]), 0)
203#define EDID1_INFO_ESTABLISHED_TIMING_800X600_72(_x) \
204 GET_BIT(((_x).established_timings[1]), 7)
205#define EDID1_INFO_ESTABLISHED_TIMING_800X600_75(_x) \
206 GET_BIT(((_x).established_timings[1]), 6)
207#define EDID1_INFO_ESTABLISHED_TIMING_832X624_75(_x) \
208 GET_BIT(((_x).established_timings[1]), 5)
209#define EDID1_INFO_ESTABLISHED_TIMING_1024X768_87I(_x) \
210 GET_BIT(((_x).established_timings[1]), 4)
211#define EDID1_INFO_ESTABLISHED_TIMING_1024X768_60(_x) \
212 GET_BIT(((_x).established_timings[1]), 3)
213#define EDID1_INFO_ESTABLISHED_TIMING_1024X768_70(_x) \
214 GET_BIT(((_x).established_timings[1]), 2)
215#define EDID1_INFO_ESTABLISHED_TIMING_1024X768_75(_x) \
216 GET_BIT(((_x).established_timings[1]), 1)
217#define EDID1_INFO_ESTABLISHED_TIMING_1280X1024_75(_x) \
218 GET_BIT(((_x).established_timings[1]), 0)
219#define EDID1_INFO_ESTABLISHED_TIMING_1152X870_75(_x) \
220 GET_BIT(((_x).established_timings[2]), 7)
221 struct {
222 unsigned char xresolution;
223 unsigned char aspect_vfreq;
224 } __attribute__((__packed__)) standard_timings[8];
225#define EDID1_INFO_STANDARD_TIMING_XRESOLUTION(_x, _i) \
226 (((_x).standard_timings[_i]).xresolution)
227#define EDID1_INFO_STANDARD_TIMING_ASPECT(_x, _i) \
228 GET_BITS(((_x).standard_timings[_i].aspect_vfreq), 7, 6)
229#define EDID1_INFO_STANDARD_TIMING_VFREQ(_x, _i) \
230 GET_BITS(((_x).standard_timings[_i].aspect_vfreq), 5, 0)
231 union {
232 unsigned char timing[72];
233 struct edid_monitor_descriptor descriptor[4];
234 } monitor_details;
235 unsigned char extension_flag;
236 unsigned char checksum;
237} __attribute__ ((__packed__));
238
239enum edid_cea861_db_types {
240 EDID_CEA861_DB_AUDIO = 0x01,
241 EDID_CEA861_DB_VIDEO = 0x02,
242 EDID_CEA861_DB_VENDOR = 0x03,
243 EDID_CEA861_DB_SPEAKER = 0x04,
244};
245
246struct edid_cea861_info {
247 unsigned char extension_tag;
248#define EDID_CEA861_EXTENSION_TAG 0x02
249 unsigned char revision;
250 unsigned char dtd_offset;
251 unsigned char dtd_count;
252#define EDID_CEA861_SUPPORTS_UNDERSCAN(_x) \
253 GET_BIT(((_x).dtd_count), 7)
254#define EDID_CEA861_SUPPORTS_BASIC_AUDIO(_x) \
255 GET_BIT(((_x).dtd_count), 6)
256#define EDID_CEA861_SUPPORTS_YUV444(_x) \
257 GET_BIT(((_x).dtd_count), 5)
258#define EDID_CEA861_SUPPORTS_YUV422(_x) \
259 GET_BIT(((_x).dtd_count), 4)
260#define EDID_CEA861_DTD_COUNT(_x) \
261 GET_BITS(((_x).dtd_count), 3, 0)
262 unsigned char data[124];
263#define EDID_CEA861_DB_TYPE(_x, offset) \
264 GET_BITS((_x).data[offset], 7, 5)
265#define EDID_CEA861_DB_LEN(_x, offset) \
266 GET_BITS((_x).data[offset], 4, 0)
267} __attribute__ ((__packed__));
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274void edid_print_info(struct edid1_info *edid_info);
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282int edid_check_info(struct edid1_info *info);
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291int edid_check_checksum(u8 *edid_block);
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303int edid_get_ranges(struct edid1_info *edid, unsigned int *hmin,
304 unsigned int *hmax, unsigned int *vmin,
305 unsigned int *vmax);
306
307struct display_timing;
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324int edid_get_timing_validate(u8 *buf, int buf_size,
325 struct display_timing *timing,
326 int *panel_bits_per_colourp,
327 bool (*mode_valid)(void *priv,
328 const struct display_timing *timing),
329 void *mode_valid_priv);
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342int edid_get_timing(u8 *buf, int buf_size, struct display_timing *timing,
343 int *panel_bits_per_colourp);
344
345#endif
346
