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backend/drm: remove wlr_drm_crtc.legacy_crtc

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We only need it for one thing: gamma size. Moreover, some bits in
the drmModeCrtc will become out-of-date, for instance the current
mode, so let's avoid caching the whole struct and only keep what
we know won't change.
This commit is contained in:
Simon Ser 2022-12-15 19:31:06 +01:00
parent 8b18352318
commit 8b8921d57b
2 changed files with 11 additions and 5 deletions
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14
backend/drm/drm.c
View File

@ -267,7 +267,15 @@ bool init_drm_resources(struct wlr_drm_backend *drm) {
for (size_t i = 0; i < drm->num_crtcs; ++i) {
struct wlr_drm_crtc *crtc = &drm->crtcs[i];
crtc->id = res->crtcs[i];
crtc->legacy_crtc = drmModeGetCrtc(drm->fd, crtc->id);
drmModeCrtc *drm_crtc = drmModeGetCrtc(drm->fd, crtc->id);
if (drm_crtc == NULL) {
wlr_log_errno(WLR_ERROR, "drmModeGetCrtc failed");
goto error_res;
}
crtc->legacy_gamma_size = drm_crtc->gamma_size;
drmModeFreeCrtc(drm_crtc);
get_drm_crtc_props(drm->fd, crtc->id, &crtc->props);
}
@ -294,8 +302,6 @@ void finish_drm_resources(struct wlr_drm_backend *drm) {
for (size_t i = 0; i < drm->num_crtcs; ++i) {
struct wlr_drm_crtc *crtc = &drm->crtcs[i];
drmModeFreeCrtc(crtc->legacy_crtc);
if (crtc->mode_id) {
drmModeDestroyPropertyBlob(drm->fd, crtc->mode_id);
}
@ -669,7 +675,7 @@ static bool drm_connector_commit(struct wlr_output *output,
size_t drm_crtc_get_gamma_lut_size(struct wlr_drm_backend *drm,
struct wlr_drm_crtc *crtc) {
if (crtc->props.gamma_lut_size == 0 || drm->iface == &legacy_iface) {
return (size_t)crtc->legacy_crtc->gamma_size;
return (size_t)crtc->legacy_gamma_size;
}
uint64_t gamma_lut_size;

2
include/backend/drm/drm.h
View File

@ -41,7 +41,7 @@ struct wlr_drm_crtc {
uint32_t gamma_lut;
// Legacy only
drmModeCrtc *legacy_crtc;
int legacy_gamma_size;
struct wlr_drm_plane *primary;
struct wlr_drm_plane *cursor;