Hi,
> > (And in the long run we should use or write a tool to generate EDIDs
> > instead of using assembly with macros. And like Jon already mentioned in
> > the other thread, even the assembly probably shouldn't be under
> > Documentation. But I digress.)
>
> If we do that, maybe stuff the EDID things into Documentation/gpu? Would
> need an ack from media folks I think, but imo would make sense.
Oh, btw: I've written a edid generator for qemu for the virtual display
devices, and I've also added a small test tool so you don't have to boot
a virtual machine to test the thing. Will ship with the upcoming qemu
3.1 release. You might find this useful ...
cheers,
Gerd
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# qemu-edid -h
This is a test tool for the qemu edid generator.
Typically you'll pipe the output into edid-decode
to check if the generator works correctly.
usage: qemu-edid <options>
options:
-h print this text
-o <file> set output file (stdout by default)
-v <vendor> set monitor vendor (three letters)
-n <name> set monitor name
-s <serial> set monitor serial
-d <dpi> set display resolution
-x <prefx> set preferred width
-y <prefy> set preferred height
-X <maxx> set maximum width
-Y <maxy> set maximum height
# qemu-edid | edid-decode
Extracted contents:
header: 00 ff ff ff ff ff ff 00
serial number: 49 14 34 12 00 00 00 00 2a 18
version: 01 04
basic params: a5 28 1e 78 06
chroma info: ee 91 a3 54 4c 99 26 0f 50 54
established: 21 08 00
standard: e1 c0 d1 c0 01 01 01 01 01 01 01 01 01 01 01 01
descriptor 1: 25 20 00 66 41 00 1a 30 00 1e 33 40 93 2e 11 00 00 18
descriptor 2: 00 00 00 fd 00 32 7d 1e a0 78 01 0a 20 20 20 20 20 20
descriptor 3: 00 00 00 fc 00 51 45 4d 55 20 4d 6f 6e 69 74 6f 72 0a
descriptor 4: 00 00 00 f7 00 0a 00 4a a2 24 29 20 00 00 00 00 00 00
extensions: 01
checksum: 19
Manufacturer: RHT Model 1234 Serial Number 0
Made week 42 of 2014
EDID version: 1.4
Digital display
8 bits per primary color channel
DisplayPort interface
Maximum image size: 40 cm x 30 cm
Gamma: 2.20
Supported color formats: RGB 4:4:4
Default (sRGB) color space is primary color space
First detailed timing is preferred timing
Established timings supported:
640x480@60Hz
800x600@60Hz
1024x768@60Hz
Standard timings supported:
2048x1152@60Hz
1920x1080@60Hz
Detailed mode: Clock 82.290 MHz, 403 mm x 302 mm
1024 1280 1310 1382 hborder 0
768 771 774 794 vborder 0
-hsync -vsync
Monitor ranges (bare limits): 50-125Hz V, 30-160kHz H, max dotclock 1200MHz
Monitor name: QEMU Monitor
Established timings III
Has 1 extension blocks
Checksum: 0x19 (valid)
CEA extension block
Extension version: 3
6 bytes of CEA data
Video data block
VIC 125 Unknown mode
VIC 101 4096x2160@50Hz
VIC 96 3840x2160@50Hz
VIC 89 2560x1080@50Hz
VIC 31 1920x1080@50Hz
0 native detailed modes
Checksum: 0xf2 (valid)
