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backend/drm: remove workaround for amdgpu DP MST

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Closes: https://github.com/swaywm/wlroots/issues/2533
This commit is contained in:
Simon Ser 2020-12-10 21:56:49 +01:00
parent 12ede67c62
commit 4c363a564f
1 changed files with 5 additions and 36 deletions
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41
backend/drm/drm.c
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@ -1209,8 +1209,8 @@ static void realloc_crtcs(struct wlr_drm_backend *drm) {
} }
static uint32_t get_possible_crtcs(int fd, drmModeRes *res, static uint32_t get_possible_crtcs(int fd, drmModeRes *res,
drmModeConnector *conn, bool is_mst) { drmModeConnector *conn) {
uint32_t ret = 0; uint32_t possible_crtcs = 0;
for (int i = 0; i < conn->count_encoders; ++i) { for (int i = 0; i < conn->count_encoders; ++i) {
drmModeEncoder *enc = drmModeGetEncoder(fd, conn->encoders[i]); drmModeEncoder *enc = drmModeGetEncoder(fd, conn->encoders[i]);
@ -1218,33 +1218,12 @@ static uint32_t get_possible_crtcs(int fd, drmModeRes *res,
continue; continue;
} }
ret |= enc->possible_crtcs; possible_crtcs |= enc->possible_crtcs;
drmModeFreeEncoder(enc); drmModeFreeEncoder(enc);
} }
// Sometimes DP MST connectors report no encoders, so we'll loop though return possible_crtcs;
// all of the encoders of the MST type instead.
// TODO: See if there is a better solution.
if (!is_mst || ret) {
return ret;
}
for (int i = 0; i < res->count_encoders; ++i) {
drmModeEncoder *enc = drmModeGetEncoder(fd, res->encoders[i]);
if (!enc) {
continue;
}
if (enc->encoder_type == DRM_MODE_ENCODER_DPMST) {
ret |= enc->possible_crtcs;
}
drmModeFreeEncoder(enc);
}
return ret;
} }
void scan_drm_connectors(struct wlr_drm_backend *drm) { void scan_drm_connectors(struct wlr_drm_backend *drm) {
@ -1405,17 +1384,7 @@ void scan_drm_connectors(struct wlr_drm_backend *drm) {
wl_list_insert(&wlr_conn->output.modes, &mode->wlr_mode.link); wl_list_insert(&wlr_conn->output.modes, &mode->wlr_mode.link);
} }
size_t path_len; wlr_conn->possible_crtc = get_possible_crtcs(drm->fd, res, drm_conn);
bool is_mst = false;
char *path = get_drm_prop_blob(drm->fd, wlr_conn->id,
wlr_conn->props.path, &path_len);
if (path && path_len > 4 && strncmp(path, "mst:", 4) == 0) {
is_mst = true;
}
free(path);
wlr_conn->possible_crtc = get_possible_crtcs(drm->fd, res, drm_conn,
is_mst);
if (wlr_conn->possible_crtc == 0) { if (wlr_conn->possible_crtc == 0) {
wlr_log(WLR_ERROR, "No CRTC possible for connector '%s'", wlr_log(WLR_ERROR, "No CRTC possible for connector '%s'",
wlr_conn->output.name); wlr_conn->output.name);