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cb6f584496
The subconnector property indicates the connector sub-type. This is useful because that usually indicates what kind of connector the user has plugged in to their monitor, e.g. a DisplayPort-to-DVI cable will indicate a DVI subconnector. Also some laptops have non-DP connectors that are internally linked to a DP port on the GPU. Set the output description accordingly. See https://drmdb.emersion.fr/properties/3233857728/subconnector
75 lines
1.7 KiB
C
75 lines
1.7 KiB
C
#ifndef BACKEND_DRM_PROPERTIES_H
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#define BACKEND_DRM_PROPERTIES_H
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#include <stdbool.h>
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#include <stdint.h>
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/*
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* These types contain the property ids for several DRM objects.
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* See https://01.org/linuxgraphics/gfx-docs/drm/gpu/drm-kms.html#kms-properties
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* for more details.
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*/
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union wlr_drm_connector_props {
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struct {
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uint32_t edid;
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uint32_t dpms;
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uint32_t link_status; // not guaranteed to exist
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uint32_t path;
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uint32_t vrr_capable; // not guaranteed to exist
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uint32_t subconnector; // not guaranteed to exist
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// atomic-modesetting only
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uint32_t crtc_id;
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};
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uint32_t props[4];
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};
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union wlr_drm_crtc_props {
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struct {
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// Neither of these are guaranteed to exist
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uint32_t vrr_enabled;
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uint32_t gamma_lut;
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uint32_t gamma_lut_size;
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// atomic-modesetting only
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uint32_t active;
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uint32_t mode_id;
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};
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uint32_t props[6];
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};
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union wlr_drm_plane_props {
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struct {
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uint32_t type;
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uint32_t rotation; // Not guaranteed to exist
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uint32_t in_formats; // Not guaranteed to exist
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// atomic-modesetting only
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uint32_t src_x;
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uint32_t src_y;
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uint32_t src_w;
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uint32_t src_h;
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uint32_t crtc_x;
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uint32_t crtc_y;
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uint32_t crtc_w;
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uint32_t crtc_h;
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uint32_t fb_id;
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uint32_t crtc_id;
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};
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uint32_t props[13];
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};
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bool get_drm_connector_props(int fd, uint32_t id,
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union wlr_drm_connector_props *out);
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bool get_drm_crtc_props(int fd, uint32_t id, union wlr_drm_crtc_props *out);
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bool get_drm_plane_props(int fd, uint32_t id, union wlr_drm_plane_props *out);
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bool get_drm_prop(int fd, uint32_t obj, uint32_t prop, uint64_t *ret);
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void *get_drm_prop_blob(int fd, uint32_t obj, uint32_t prop, size_t *ret_len);
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char *get_drm_prop_enum(int fd, uint32_t obj, uint32_t prop);
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#endif
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