backend/session: use drmIsKMS
This moves the magic incantation into libdrm and is clearer. See
[1] for details.
While at it, fixup the doc comment and improve logging.
[1]: 523b3658aa
This commit is contained in:
parent
6c3d080e25
commit
fb933d3204
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@ -337,9 +337,8 @@ bool wlr_session_change_vt(struct wlr_session *session, unsigned vt) {
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return libseat_switch_session(session->seat_handle, vt) == 0;
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return libseat_switch_session(session->seat_handle, vt) == 0;
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}
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}
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/* Tests if 'path' is KMS compatible by trying to open it.
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/* Tests if 'path' is KMS compatible by trying to open it. Returns the opened
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* It leaves the open device in *fd_out it it succeeds.
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* device on success. */
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*/
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static struct wlr_device *open_if_kms(struct wlr_session *restrict session,
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static struct wlr_device *open_if_kms(struct wlr_session *restrict session,
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const char *restrict path) {
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const char *restrict path) {
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if (!path) {
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if (!path) {
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@ -351,25 +350,13 @@ static struct wlr_device *open_if_kms(struct wlr_session *restrict session,
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return NULL;
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return NULL;
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}
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}
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// The kernel errors out with EOPNOTSUPP if DRIVER_MODESET isn't set
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if (!drmIsKMS(dev->fd)) {
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drmModeRes *res = drmModeGetResources(dev->fd);
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wlr_log(WLR_DEBUG, "Ignoring '%s': not a KMS device", path);
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if (!res) {
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wlr_session_close_file(session, dev);
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if (errno != EOPNOTSUPP) {
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return NULL;
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wlr_log_errno(WLR_ERROR, "drmModeGetResources(%s) failed", path);
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}
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goto out_dev;
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}
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}
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if (res->count_crtcs == 0) {
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drmModeFreeResources(res);
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goto out_dev;
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}
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drmModeFreeResources(res);
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return dev;
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return dev;
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out_dev:
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wlr_session_close_file(session, dev);
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return NULL;
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}
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}
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static ssize_t explicit_find_gpus(struct wlr_session *session,
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static ssize_t explicit_find_gpus(struct wlr_session *session,
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@ -96,7 +96,7 @@ internal_features = {
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wayland_server = dependency('wayland-server', version: '>=1.19')
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wayland_server = dependency('wayland-server', version: '>=1.19')
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wayland_client = dependency('wayland-client')
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wayland_client = dependency('wayland-client')
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drm = dependency('libdrm', version: '>=2.4.95')
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drm = dependency('libdrm', version: '>=2.4.105')
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gbm = dependency('gbm', version: '>=17.1.0')
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gbm = dependency('gbm', version: '>=17.1.0')
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libinput = dependency('libinput', version: '>=1.14.0')
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libinput = dependency('libinput', version: '>=1.14.0')
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xkbcommon = dependency('xkbcommon')
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xkbcommon = dependency('xkbcommon')
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