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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
View file

@ -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,
};

16
backend/drm/drm.c
View file

@ -581,12 +581,24 @@ static void fill_empty_gamma_table(size_t size,
static size_t drm_connector_get_gamma_size(struct wlr_output *output) {
struct wlr_drm_connector *conn = get_drm_connector_from_output(output);
struct wlr_drm_backend *drm = get_drm_backend_from_backend(output->backend);
struct wlr_drm_crtc *crtc = conn->crtc;
if (conn->crtc) {
return drm->iface->crtc_get_gamma_size(drm, conn->crtc);
if (crtc == NULL) {
return 0;
}
if (crtc->props.gamma_lut_size == 0) {
return (size_t)crtc->legacy_crtc->gamma_size;
}
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 gamma_lut_size;
}
bool set_drm_connector_gamma(struct wlr_output *output, size_t size,

6
backend/drm/legacy.c
View file

@ -117,12 +117,6 @@ bool drm_legacy_crtc_set_gamma(struct wlr_drm_backend *drm,
return true;
}
static size_t legacy_crtc_get_gamma_size(struct wlr_drm_backend *drm,
struct wlr_drm_crtc *crtc) {
return (size_t)crtc->legacy_crtc->gamma_size;
}
const struct wlr_drm_interface legacy_iface = {
.crtc_commit = legacy_crtc_commit,
.crtc_get_gamma_size = legacy_crtc_get_gamma_size,
};

3
include/backend/drm/iface.h
View file

@ -16,9 +16,6 @@ struct wlr_drm_interface {
// Commit al pending changes on a CRTC.
bool (*crtc_commit)(struct wlr_drm_backend *drm,
struct wlr_drm_connector *conn, uint32_t flags);
// Get the gamma lut size of a crtc
size_t (*crtc_get_gamma_size)(struct wlr_drm_backend *drm,
struct wlr_drm_crtc *crtc);
};
extern const struct wlr_drm_interface atomic_iface;

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

@ -31,13 +31,13 @@ union wlr_drm_crtc_props {
uint32_t rotation;
uint32_t scaling_mode;
uint32_t vrr_enabled;
uint32_t gamma_lut;
uint32_t gamma_lut_size;
// atomic-modesetting only
uint32_t active;
uint32_t mode_id;
uint32_t gamma_lut;
uint32_t gamma_lut_size;
};
uint32_t props[6];
};