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qemu-e2k/include/hw/display/edid.h

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display/edid: add edid generator to qemu. EDID is a metadata format to describe monitors. On physical hardware the monitor has an eeprom with that data block which can be read over i2c bus. On a linux system you can usually find the EDID data block in /sys/class/drm/$card/$connector/edid. xorg ships a edid-decode utility which you can use to turn the blob into readable form. I think it would be a good idea to use EDID for virtual displays too. Needs changes in both qemu and guest kms drivers. This patch is the first step, it adds an generator for EDID blobs to qemu. Comes with a qemu-edid test tool included. With EDID we can pass more information to the guest. Names and serial numbers, so the guests display configuration has no boring "Unknown Monitor". List of video modes. Display resolution, pretty important in case we want add HiDPI support some day. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Message-id: 20180925075646.25114-2-kraxel@redhat.com
2018-09-25 09:56:42 +02:00
#ifndef EDID_H
#define EDID_H
typedef struct qemu_edid_info {
const char *vendor;
const char *name;
const char *serial;
uint32_t dpi;
uint32_t prefx;
uint32_t prefy;
uint32_t maxx;
uint32_t maxy;
} qemu_edid_info;
void qemu_edid_generate(uint8_t *edid, size_t size,
qemu_edid_info *info);
display/edid: add qemu_edid_size() Helper function to figure the size of a edid blob, by checking how many extensions are present. Both the base edid blob and the extensions are 128 bytes in size. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Message-id: 20180925075646.25114-3-kraxel@redhat.com
2018-09-25 09:56:43 +02:00
size_t qemu_edid_size(uint8_t *edid);
display/edid: add edid generator to qemu. EDID is a metadata format to describe monitors. On physical hardware the monitor has an eeprom with that data block which can be read over i2c bus. On a linux system you can usually find the EDID data block in /sys/class/drm/$card/$connector/edid. xorg ships a edid-decode utility which you can use to turn the blob into readable form. I think it would be a good idea to use EDID for virtual displays too. Needs changes in both qemu and guest kms drivers. This patch is the first step, it adds an generator for EDID blobs to qemu. Comes with a qemu-edid test tool included. With EDID we can pass more information to the guest. Names and serial numbers, so the guests display configuration has no boring "Unknown Monitor". List of video modes. Display resolution, pretty important in case we want add HiDPI support some day. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Message-id: 20180925075646.25114-2-kraxel@redhat.com
2018-09-25 09:56:42 +02:00
#endif /* EDID_H */