| Message ID | 20240924-concurrent-wb-v2-2-7849f900e863@quicinc.com (mailing list archive) |
|---|---|
| State | Superseded |
| Headers | show |
| Series | drm/msm/dpu: Add Concurrent Writeback Support for DPU 10.x+ | expand |
On Tue, Sep 24, 2024 at 03:59:18PM GMT, Jessica Zhang wrote: > Check that all encoders attached to a given CRTC are valid > possible_clones of each other. > > Signed-off-by: Jessica Zhang <quic_jesszhan@quicinc.com> > --- > drivers/gpu/drm/drm_atomic_helper.c | 23 +++++++++++++++++++++++ > 1 file changed, 23 insertions(+) > > diff --git a/drivers/gpu/drm/drm_atomic_helper.c b/drivers/gpu/drm/drm_atomic_helper.c > index 43cdf39019a4..cc4001804fdc 100644 > --- a/drivers/gpu/drm/drm_atomic_helper.c > +++ b/drivers/gpu/drm/drm_atomic_helper.c > @@ -574,6 +574,25 @@ mode_valid(struct drm_atomic_state *state) > return 0; > } > > +static int drm_atomic_check_valid_clones(struct drm_atomic_state *state, > + struct drm_crtc *crtc) > +{ > + struct drm_encoder *drm_enc; > + struct drm_crtc_state *crtc_state = drm_atomic_get_new_crtc_state(state, > + crtc); > + > + drm_for_each_encoder_mask(drm_enc, crtc->dev, crtc_state->encoder_mask) { > + if ((crtc_state->encoder_mask & drm_enc->possible_clones) != > + crtc_state->encoder_mask) { > + DRM_DEBUG("crtc%d failed valid clone check for mask 0x%x\n", > + crtc->base.id, crtc_state->encoder_mask); > + return -EINVAL; > + } > + } > + > + return 0; > +} > + > /** > * drm_atomic_helper_check_modeset - validate state object for modeset changes > * @dev: DRM device > @@ -745,6 +764,10 @@ drm_atomic_helper_check_modeset(struct drm_device *dev, > ret = drm_atomic_add_affected_planes(state, crtc); > if (ret != 0) > return ret; > + > + ret = drm_atomic_check_valid_clones(state, crtc); > + if (ret != 0) > + return ret; > } Pretty much the same comment, we should have kunit tests for this. Maxime
diff --git a/drivers/gpu/drm/drm_atomic_helper.c b/drivers/gpu/drm/drm_atomic_helper.c index 43cdf39019a4..cc4001804fdc 100644 --- a/drivers/gpu/drm/drm_atomic_helper.c +++ b/drivers/gpu/drm/drm_atomic_helper.c @@ -574,6 +574,25 @@ mode_valid(struct drm_atomic_state *state) return 0; } +static int drm_atomic_check_valid_clones(struct drm_atomic_state *state, + struct drm_crtc *crtc) +{ + struct drm_encoder *drm_enc; + struct drm_crtc_state *crtc_state = drm_atomic_get_new_crtc_state(state, + crtc); + + drm_for_each_encoder_mask(drm_enc, crtc->dev, crtc_state->encoder_mask) { + if ((crtc_state->encoder_mask & drm_enc->possible_clones) != + crtc_state->encoder_mask) { + DRM_DEBUG("crtc%d failed valid clone check for mask 0x%x\n", + crtc->base.id, crtc_state->encoder_mask); + return -EINVAL; + } + } + + return 0; +} + /** * drm_atomic_helper_check_modeset - validate state object for modeset changes * @dev: DRM device @@ -745,6 +764,10 @@ drm_atomic_helper_check_modeset(struct drm_device *dev, ret = drm_atomic_add_affected_planes(state, crtc); if (ret != 0) return ret; + + ret = drm_atomic_check_valid_clones(state, crtc); + if (ret != 0) + return ret; } /*
Check that all encoders attached to a given CRTC are valid possible_clones of each other. Signed-off-by: Jessica Zhang <quic_jesszhan@quicinc.com> --- drivers/gpu/drm/drm_atomic_helper.c | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+)