diff options
| -rw-r--r-- | drivers/gpu/drm/vc4/vc4_kms.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/gpu/drm/vc4/vc4_kms.c b/drivers/gpu/drm/vc4/vc4_kms.c index 16e233e1406e..af3ee3dcdab6 100644 --- a/drivers/gpu/drm/vc4/vc4_kms.c +++ b/drivers/gpu/drm/vc4/vc4_kms.c @@ -620,6 +620,23 @@ vc4_atomic_check(struct drm_device *dev, struct drm_atomic_state *state) struct drm_crtc *crtc; int i, ret; + /* + * Since the HVS FIFOs are shared across all the pixelvalves and + * the TXP (and thus all the CRTCs), we need to pull the current + * state of all the enabled CRTCs so that an update to a single + * CRTC still keeps the previous FIFOs enabled and assigned to + * the same CRTCs, instead of evaluating only the CRTC being + * modified. + */ + list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { + if (!crtc->state->enable) + continue; + + crtc_state = drm_atomic_get_crtc_state(state, crtc); + if (IS_ERR(crtc_state)) + return PTR_ERR(crtc_state); + } + for_each_new_crtc_in_state(state, crtc, crtc_state, i) { struct vc4_crtc_state *vc4_crtc_state = to_vc4_crtc_state(crtc_state); |