tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 * Copyright 2018 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#include "mod_info_packet.h"
27#include "core_types.h"
28#include "dc_types.h"
29#include "mod_shared.h"
30
31#define HDMI_INFOFRAME_TYPE_VENDOR 0x81
32
33enum ColorimetryRGBDP {
34 ColorimetryRGB_DP_sRGB = 0,
35 ColorimetryRGB_DP_AdobeRGB = 3,
36 ColorimetryRGB_DP_P3 = 4,
37 ColorimetryRGB_DP_CustomColorProfile = 5,
38 ColorimetryRGB_DP_ITU_R_BT2020RGB = 6,
39};
40enum ColorimetryYCCDP {
41 ColorimetryYCC_DP_ITU601 = 0,
42 ColorimetryYCC_DP_ITU709 = 1,
43 ColorimetryYCC_DP_AdobeYCC = 5,
44 ColorimetryYCC_DP_ITU2020YCC = 6,
45 ColorimetryYCC_DP_ITU2020YCbCr = 7,
46};
47
48void mod_build_vsc_infopacket(const struct dc_stream_state *stream,
49 struct dc_info_packet *info_packet)
50{
51 unsigned int vscPacketRevision = 0;
52 unsigned int i;
53 unsigned int pixelEncoding = 0;
54 unsigned int colorimetryFormat = 0;
55 bool stereo3dSupport = false;
56
57 if (stream->timing.timing_3d_format != TIMING_3D_FORMAT_NONE && stream->view_format != VIEW_3D_FORMAT_NONE) {
58 vscPacketRevision = 1;
59 stereo3dSupport = true;
60 }
61
62 /*VSC packet set to 2 when DP revision >= 1.2*/
63 if (stream->psr_version != 0)
64 vscPacketRevision = 2;
65
66 if (stream->timing.pixel_encoding == PIXEL_ENCODING_YCBCR420)
67 vscPacketRevision = 5;
68
69 /* VSC packet not needed based on the features
70 * supported by this DP display
71 */
72 if (vscPacketRevision == 0)
73 return;
74
75 if (vscPacketRevision == 0x2) {
76 /* Secondary-data Packet ID = 0*/
77 info_packet->hb0 = 0x00;
78 /* 07h - Packet Type Value indicating Video
79 * Stream Configuration packet
80 */
81 info_packet->hb1 = 0x07;
82 /* 02h = VSC SDP supporting 3D stereo and PSR
83 * (applies to eDP v1.3 or higher).
84 */
85 info_packet->hb2 = 0x02;
86 /* 08h = VSC packet supporting 3D stereo + PSR
87 * (HB2 = 02h).
88 */
89 info_packet->hb3 = 0x08;
90
91 for (i = 0; i < 28; i++)
92 info_packet->sb[i] = 0;
93
94 info_packet->valid = true;
95 }
96
97 if (vscPacketRevision == 0x1) {
98
99 info_packet->hb0 = 0x00; // Secondary-data Packet ID = 0
100 info_packet->hb1 = 0x07; // 07h = Packet Type Value indicating Video Stream Configuration packet
101 info_packet->hb2 = 0x01; // 01h = Revision number. VSC SDP supporting 3D stereo only
102 info_packet->hb3 = 0x01; // 01h = VSC SDP supporting 3D stereo only (HB2 = 01h).
103
104 info_packet->valid = true;
105 }
106
107 if (stereo3dSupport) {
108 /* ==============================================================================================================|
109 * A. STEREO 3D
110 * ==============================================================================================================|
111 * VSC Payload (1 byte) From DP1.2 spec
112 *
113 * Bits 3:0 (Stereo Interface Method Code) | Bits 7:4 (Stereo Interface Method Specific Parameter)
114 * -----------------------------------------------------------------------------------------------------
115 * 0 = Non Stereo Video | Must be set to 0x0
116 * -----------------------------------------------------------------------------------------------------
117 * 1 = Frame/Field Sequential | 0x0: L + R view indication based on MISC1 bit 2:1
118 * | 0x1: Right when Stereo Signal = 1
119 * | 0x2: Left when Stereo Signal = 1
120 * | (others reserved)
121 * -----------------------------------------------------------------------------------------------------
122 * 2 = Stacked Frame | 0x0: Left view is on top and right view on bottom
123 * | (others reserved)
124 * -----------------------------------------------------------------------------------------------------
125 * 3 = Pixel Interleaved | 0x0: horiz interleaved, right view pixels on even lines
126 * | 0x1: horiz interleaved, right view pixels on odd lines
127 * | 0x2: checker board, start with left view pixel
128 * | 0x3: vertical interleaved, start with left view pixels
129 * | 0x4: vertical interleaved, start with right view pixels
130 * | (others reserved)
131 * -----------------------------------------------------------------------------------------------------
132 * 4 = Side-by-side | 0x0: left half represents left eye view
133 * | 0x1: left half represents right eye view
134 */
135 switch (stream->timing.timing_3d_format) {
136 case TIMING_3D_FORMAT_HW_FRAME_PACKING:
137 case TIMING_3D_FORMAT_SW_FRAME_PACKING:
138 case TIMING_3D_FORMAT_TOP_AND_BOTTOM:
139 case TIMING_3D_FORMAT_TB_SW_PACKED:
140 info_packet->sb[0] = 0x02; // Stacked Frame, Left view is on top and right view on bottom.
141 break;
142 case TIMING_3D_FORMAT_DP_HDMI_INBAND_FA:
143 case TIMING_3D_FORMAT_INBAND_FA:
144 info_packet->sb[0] = 0x01; // Frame/Field Sequential, L + R view indication based on MISC1 bit 2:1
145 break;
146 case TIMING_3D_FORMAT_SIDE_BY_SIDE:
147 case TIMING_3D_FORMAT_SBS_SW_PACKED:
148 info_packet->sb[0] = 0x04; // Side-by-side
149 break;
150 default:
151 info_packet->sb[0] = 0x00; // No Stereo Video, Shall be cleared to 0x0.
152 break;
153 }
154
155 }
156
157 /* 05h = VSC SDP supporting 3D stereo, PSR2, and Pixel Encoding/Colorimetry Format indication.
158 * Added in DP1.3, a DP Source device is allowed to indicate the pixel encoding/colorimetry
159 * format to the DP Sink device with VSC SDP only when the DP Sink device supports it
160 * (i.e., VSC_SDP_EXTENSION_FOR_COLORIMETRY_SUPPORTED bit in the DPRX_FEATURE_ENUMERATION_LIST
161 * register (DPCD Address 02210h, bit 3) is set to 1).
162 * (Requires VSC_SDP_EXTENSION_FOR_COLORIMETRY_SUPPORTED bit set to 1 in DPCD 02210h. This
163 * DPCD register is exposed in the new Extended Receiver Capability field for DPCD Rev. 1.4
164 * (and higher). When MISC1. bit 6. is Set to 1, a Source device uses a VSC SDP to indicate
165 * the Pixel Encoding/Colorimetry Format and that a Sink device must ignore MISC1, bit 7, and
166 * MISC0, bits 7:1 (MISC1, bit 7. and MISC0, bits 7:1 become "don't care").)
167 */
168 if (vscPacketRevision == 0x5) {
169 /* Secondary-data Packet ID = 0 */
170 info_packet->hb0 = 0x00;
171 /* 07h - Packet Type Value indicating Video Stream Configuration packet */
172 info_packet->hb1 = 0x07;
173 /* 05h = VSC SDP supporting 3D stereo, PSR2, and Pixel Encoding/Colorimetry Format indication. */
174 info_packet->hb2 = 0x05;
175 /* 13h = VSC SDP supporting 3D stereo, + PSR2, + Pixel Encoding/Colorimetry Format indication (HB2 = 05h). */
176 info_packet->hb3 = 0x13;
177
178 info_packet->valid = true;
179
180 /* Set VSC SDP fields for pixel encoding and colorimetry format from DP 1.3 specs
181 * Data Bytes DB 18~16
182 * Bits 3:0 (Colorimetry Format) | Bits 7:4 (Pixel Encoding)
183 * ----------------------------------------------------------------------------------------------------
184 * 0x0 = sRGB | 0 = RGB
185 * 0x1 = RGB Wide Gamut Fixed Point
186 * 0x2 = RGB Wide Gamut Floating Point
187 * 0x3 = AdobeRGB
188 * 0x4 = DCI-P3
189 * 0x5 = CustomColorProfile
190 * (others reserved)
191 * ----------------------------------------------------------------------------------------------------
192 * 0x0 = ITU-R BT.601 | 1 = YCbCr444
193 * 0x1 = ITU-R BT.709
194 * 0x2 = xvYCC601
195 * 0x3 = xvYCC709
196 * 0x4 = sYCC601
197 * 0x5 = AdobeYCC601
198 * 0x6 = ITU-R BT.2020 Y'cC'bcC'rc
199 * 0x7 = ITU-R BT.2020 Y'C'bC'r
200 * (others reserved)
201 * ----------------------------------------------------------------------------------------------------
202 * 0x0 = ITU-R BT.601 | 2 = YCbCr422
203 * 0x1 = ITU-R BT.709
204 * 0x2 = xvYCC601
205 * 0x3 = xvYCC709
206 * 0x4 = sYCC601
207 * 0x5 = AdobeYCC601
208 * 0x6 = ITU-R BT.2020 Y'cC'bcC'rc
209 * 0x7 = ITU-R BT.2020 Y'C'bC'r
210 * (others reserved)
211 * ----------------------------------------------------------------------------------------------------
212 * 0x0 = ITU-R BT.601 | 3 = YCbCr420
213 * 0x1 = ITU-R BT.709
214 * 0x2 = xvYCC601
215 * 0x3 = xvYCC709
216 * 0x4 = sYCC601
217 * 0x5 = AdobeYCC601
218 * 0x6 = ITU-R BT.2020 Y'cC'bcC'rc
219 * 0x7 = ITU-R BT.2020 Y'C'bC'r
220 * (others reserved)
221 * ----------------------------------------------------------------------------------------------------
222 * 0x0 =DICOM Part14 Grayscale | 4 = Yonly
223 * Display Function
224 * (others reserved)
225 */
226
227 /* Set Pixel Encoding */
228 switch (stream->timing.pixel_encoding) {
229 case PIXEL_ENCODING_RGB:
230 pixelEncoding = 0x0; /* RGB = 0h */
231 break;
232 case PIXEL_ENCODING_YCBCR444:
233 pixelEncoding = 0x1; /* YCbCr444 = 1h */
234 break;
235 case PIXEL_ENCODING_YCBCR422:
236 pixelEncoding = 0x2; /* YCbCr422 = 2h */
237 break;
238 case PIXEL_ENCODING_YCBCR420:
239 pixelEncoding = 0x3; /* YCbCr420 = 3h */
240 break;
241 default:
242 pixelEncoding = 0x0; /* default RGB = 0h */
243 break;
244 }
245
246 /* Set Colorimetry format based on pixel encoding */
247 switch (stream->timing.pixel_encoding) {
248 case PIXEL_ENCODING_RGB:
249 if ((stream->output_color_space == COLOR_SPACE_SRGB) ||
250 (stream->output_color_space == COLOR_SPACE_SRGB_LIMITED))
251 colorimetryFormat = ColorimetryRGB_DP_sRGB;
252 else if (stream->output_color_space == COLOR_SPACE_ADOBERGB)
253 colorimetryFormat = ColorimetryRGB_DP_AdobeRGB;
254 else if ((stream->output_color_space == COLOR_SPACE_2020_RGB_FULLRANGE) ||
255 (stream->output_color_space == COLOR_SPACE_2020_RGB_LIMITEDRANGE))
256 colorimetryFormat = ColorimetryRGB_DP_ITU_R_BT2020RGB;
257 break;
258
259 case PIXEL_ENCODING_YCBCR444:
260 case PIXEL_ENCODING_YCBCR422:
261 case PIXEL_ENCODING_YCBCR420:
262 /* Note: xvYCC probably not supported correctly here on DP since colorspace translation
263 * loses distinction between BT601 vs xvYCC601 in translation
264 */
265 if (stream->output_color_space == COLOR_SPACE_YCBCR601)
266 colorimetryFormat = ColorimetryYCC_DP_ITU601;
267 else if (stream->output_color_space == COLOR_SPACE_YCBCR709)
268 colorimetryFormat = ColorimetryYCC_DP_ITU709;
269 else if (stream->output_color_space == COLOR_SPACE_ADOBERGB)
270 colorimetryFormat = ColorimetryYCC_DP_AdobeYCC;
271 else if (stream->output_color_space == COLOR_SPACE_2020_YCBCR)
272 colorimetryFormat = ColorimetryYCC_DP_ITU2020YCbCr;
273 break;
274
275 default:
276 colorimetryFormat = ColorimetryRGB_DP_sRGB;
277 break;
278 }
279
280 info_packet->sb[16] = (pixelEncoding << 4) | colorimetryFormat;
281
282 /* Set color depth */
283 switch (stream->timing.display_color_depth) {
284 case COLOR_DEPTH_666:
285 /* NOTE: This is actually not valid for YCbCr pixel encoding to have 6 bpc
286 * as of DP1.4 spec, but value of 0 probably reserved here for potential future use.
287 */
288 info_packet->sb[17] = 0;
289 break;
290 case COLOR_DEPTH_888:
291 info_packet->sb[17] = 1;
292 break;
293 case COLOR_DEPTH_101010:
294 info_packet->sb[17] = 2;
295 break;
296 case COLOR_DEPTH_121212:
297 info_packet->sb[17] = 3;
298 break;
299 /*case COLOR_DEPTH_141414: -- NO SUCH FORMAT IN DP SPEC */
300 case COLOR_DEPTH_161616:
301 info_packet->sb[17] = 4;
302 break;
303 default:
304 info_packet->sb[17] = 0;
305 break;
306 }
307
308 /* all YCbCr are always limited range */
309 if ((stream->output_color_space == COLOR_SPACE_SRGB_LIMITED) ||
310 (stream->output_color_space == COLOR_SPACE_2020_RGB_LIMITEDRANGE) ||
311 (pixelEncoding != 0x0)) {
312 info_packet->sb[17] |= 0x80; /* DB17 bit 7 set to 1 for CEA timing. */
313 }
314
315 /* Content Type (Bits 2:0)
316 * 0 = Not defined.
317 * 1 = Graphics.
318 * 2 = Photo.
319 * 3 = Video.
320 * 4 = Game.
321 */
322 info_packet->sb[18] = 0;
323 }
324
325}
326