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backend/drm: GAMMA_LUT_SIZE isn't atomic

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GAMMA_LUT_SIZE isn't an atomic property. It can be used with the legacy
interface too. So we can unify both codepaths and remove
wlr_drm_interface.crtc_get_gamma_size.

It's no guaranteed to exist though, so we still need to keep the
fallback.
This commit is contained in:
Simon Ser 2020-05-09 16:50:50 +02:00
parent da63d11d34
commit 06d5aa5780
5 changed files with 17 additions and 31 deletions
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17
backend/drm/atomic.c
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@ -240,23 +240,6 @@ static bool atomic_crtc_commit(struct wlr_drm_backend *drm,
return true;
}
static size_t atomic_crtc_get_gamma_size(struct wlr_drm_backend *drm,
struct wlr_drm_crtc *crtc) {
if (crtc->props.gamma_lut_size == 0) {
return legacy_iface.crtc_get_gamma_size(drm, crtc);
}
uint64_t gamma_lut_size;
if (!get_drm_prop(drm->fd, crtc->id, crtc->props.gamma_lut_size,
&gamma_lut_size)) {
wlr_log(WLR_ERROR, "Unable to get gamma lut size");
return 0;
}
return (size_t)gamma_lut_size;
}
const struct wlr_drm_interface atomic_iface = {
.crtc_commit = atomic_crtc_commit,
.crtc_get_gamma_size = atomic_crtc_get_gamma_size,
};