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backend/drm: set "max bpc" to the max

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"max bpc" is a maximum value, the driver is free to choose a
smaller value depending on the bandwidth available.

Some faulty monitors misbehave with higher bpc values. We'll add
a workaround if users get hit by these in practice.

References: https://gitlab.freedesktop.org/wayland/weston/-/issues/612
This commit is contained in:
Simon Ser 2022-06-07 15:03:39 +02:00 • committed by Isaac Freund
parent 1f1c0275be
commit 1d581656c7
5 changed files with 43 additions and 0 deletions
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1
include/backend/drm/drm.h
View file

@ -119,6 +119,7 @@ struct wlr_drm_connector {
enum wlr_drm_connector_status status;
bool desired_enabled;
uint32_t id;
uint64_t max_bpc;
struct wlr_drm_lease *lease;
struct wlr_drm_crtc *crtc;

4
include/backend/drm/properties.h
View file

@ -21,6 +21,7 @@ union wlr_drm_connector_props {
uint32_t non_desktop;
uint32_t panel_orientation; // not guaranteed to exist
uint32_t content_type; // not guaranteed to exist
uint32_t max_bpc; // not guaranteed to exist
// atomic-modesetting only
@ -76,4 +77,7 @@ bool get_drm_prop(int fd, uint32_t obj, uint32_t prop, uint64_t *ret);
void *get_drm_prop_blob(int fd, uint32_t obj, uint32_t prop, size_t *ret_len);
char *get_drm_prop_enum(int fd, uint32_t obj, uint32_t prop);
bool introspect_drm_prop_range(int fd, uint32_t prop_id,
uint64_t *min, uint64_t *max);
#endif