| Message ID | 20231212002245.23715-14-quic_abhinavk@quicinc.com (mailing list archive) |
|---|---|
| State | Superseded |
| Headers | show |
| Series | Add CDM support for MSM writeback | expand |
On Tue, 12 Dec 2023 at 02:23, Abhinav Kumar <quic_abhinavk@quicinc.com> wrote: > > Reserve CDM blocks for writeback if the format of the output fb > is YUV. At the moment, the reservation is done only for writeback > but can easily be extended by relaxing the checks once other > interfaces are ready to output YUV. > > changes in v3: > - squash CDM disable during encoder cleanup into this change > > changes in v2: > - use needs_cdm from topology struct > - drop fb related checks from atomic_mode_set() > > Signed-off-by: Abhinav Kumar <quic_abhinavk@quicinc.com> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Minor nit below which I should probably handle while applying the patch. > --- > drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c | 37 +++++++++++++++++++++ > 1 file changed, 37 insertions(+) > > diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c > index 889e9bb42715..989ee8c0e5b4 100644 > --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c > +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c > @@ -16,6 +16,7 @@ > #include <drm/drm_crtc.h> > #include <drm/drm_file.h> > #include <drm/drm_probe_helper.h> > +#include <drm/drm_framebuffer.h> > > #include "msm_drv.h" > #include "dpu_kms.h" > @@ -26,6 +27,7 @@ > #include "dpu_hw_dspp.h" > #include "dpu_hw_dsc.h" > #include "dpu_hw_merge3d.h" > +#include "dpu_hw_cdm.h" > #include "dpu_formats.h" > #include "dpu_encoder_phys.h" > #include "dpu_crtc.h" > @@ -582,6 +584,7 @@ static int dpu_encoder_virt_atomic_check( > struct drm_display_mode *adj_mode; > struct msm_display_topology topology; > struct dpu_global_state *global_state; > + struct drm_framebuffer *fb; > struct drm_dsc_config *dsc; > int i = 0; > int ret = 0; > @@ -622,6 +625,22 @@ static int dpu_encoder_virt_atomic_check( > > topology = dpu_encoder_get_topology(dpu_enc, dpu_kms, adj_mode, crtc_state, dsc); > > + /* > + * Use CDM only for writeback at the moment as other interfaces cannot handle it. > + * if writeback itself cannot handle cdm for some reason it will fail in its atomic_check() > + * earlier. What about s/handle/use/ ? > + */ > + if (dpu_enc->disp_info.intf_type == INTF_WB && conn_state->writeback_job) { > + fb = conn_state->writeback_job->fb; > + > + if (fb && DPU_FORMAT_IS_YUV(to_dpu_format(msm_framebuffer_format(fb)))) > + topology.needs_cdm = true; > + if (topology.needs_cdm && !dpu_enc->cur_master->hw_cdm) > + crtc_state->mode_changed = true; > + else if (!topology.needs_cdm && dpu_enc->cur_master->hw_cdm) > + crtc_state->mode_changed = true; > + } > + > /* > * Release and Allocate resources on every modeset > * Dont allocate when active is false. > @@ -1062,6 +1081,15 @@ static void dpu_encoder_virt_atomic_mode_set(struct drm_encoder *drm_enc, > > dpu_enc->dsc_mask = dsc_mask; > > + if (dpu_enc->disp_info.intf_type == INTF_WB && conn_state->writeback_job) { > + struct dpu_hw_blk *hw_cdm = NULL; > + > + dpu_rm_get_assigned_resources(&dpu_kms->rm, global_state, > + drm_enc->base.id, DPU_HW_BLK_CDM, > + &hw_cdm, 1); > + dpu_enc->cur_master->hw_cdm = hw_cdm ? to_dpu_hw_cdm(hw_cdm) : NULL; > + } > + > cstate = to_dpu_crtc_state(crtc_state); > > for (i = 0; i < num_lm; i++) { > @@ -2050,6 +2078,15 @@ void dpu_encoder_helper_phys_cleanup(struct dpu_encoder_phys *phys_enc) > phys_enc->hw_pp->merge_3d->idx); > } > > + if (phys_enc->hw_cdm) { > + if (phys_enc->hw_cdm->ops.bind_pingpong_blk && phys_enc->hw_pp) > + phys_enc->hw_cdm->ops.bind_pingpong_blk(phys_enc->hw_cdm, > + PINGPONG_NONE); > + if (phys_enc->hw_ctl->ops.update_pending_flush_cdm) > + phys_enc->hw_ctl->ops.update_pending_flush_cdm(phys_enc->hw_ctl, > + phys_enc->hw_cdm->idx); > + } > + > if (dpu_enc->dsc) { > dpu_encoder_unprep_dsc(dpu_enc); > dpu_enc->dsc = NULL; > -- > 2.40.1 >
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c index 889e9bb42715..989ee8c0e5b4 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c @@ -16,6 +16,7 @@ #include <drm/drm_crtc.h> #include <drm/drm_file.h> #include <drm/drm_probe_helper.h> +#include <drm/drm_framebuffer.h> #include "msm_drv.h" #include "dpu_kms.h" @@ -26,6 +27,7 @@ #include "dpu_hw_dspp.h" #include "dpu_hw_dsc.h" #include "dpu_hw_merge3d.h" +#include "dpu_hw_cdm.h" #include "dpu_formats.h" #include "dpu_encoder_phys.h" #include "dpu_crtc.h" @@ -582,6 +584,7 @@ static int dpu_encoder_virt_atomic_check( struct drm_display_mode *adj_mode; struct msm_display_topology topology; struct dpu_global_state *global_state; + struct drm_framebuffer *fb; struct drm_dsc_config *dsc; int i = 0; int ret = 0; @@ -622,6 +625,22 @@ static int dpu_encoder_virt_atomic_check( topology = dpu_encoder_get_topology(dpu_enc, dpu_kms, adj_mode, crtc_state, dsc); + /* + * Use CDM only for writeback at the moment as other interfaces cannot handle it. + * if writeback itself cannot handle cdm for some reason it will fail in its atomic_check() + * earlier. + */ + if (dpu_enc->disp_info.intf_type == INTF_WB && conn_state->writeback_job) { + fb = conn_state->writeback_job->fb; + + if (fb && DPU_FORMAT_IS_YUV(to_dpu_format(msm_framebuffer_format(fb)))) + topology.needs_cdm = true; + if (topology.needs_cdm && !dpu_enc->cur_master->hw_cdm) + crtc_state->mode_changed = true; + else if (!topology.needs_cdm && dpu_enc->cur_master->hw_cdm) + crtc_state->mode_changed = true; + } + /* * Release and Allocate resources on every modeset * Dont allocate when active is false. @@ -1062,6 +1081,15 @@ static void dpu_encoder_virt_atomic_mode_set(struct drm_encoder *drm_enc, dpu_enc->dsc_mask = dsc_mask; + if (dpu_enc->disp_info.intf_type == INTF_WB && conn_state->writeback_job) { + struct dpu_hw_blk *hw_cdm = NULL; + + dpu_rm_get_assigned_resources(&dpu_kms->rm, global_state, + drm_enc->base.id, DPU_HW_BLK_CDM, + &hw_cdm, 1); + dpu_enc->cur_master->hw_cdm = hw_cdm ? to_dpu_hw_cdm(hw_cdm) : NULL; + } + cstate = to_dpu_crtc_state(crtc_state); for (i = 0; i < num_lm; i++) { @@ -2050,6 +2078,15 @@ void dpu_encoder_helper_phys_cleanup(struct dpu_encoder_phys *phys_enc) phys_enc->hw_pp->merge_3d->idx); } + if (phys_enc->hw_cdm) { + if (phys_enc->hw_cdm->ops.bind_pingpong_blk && phys_enc->hw_pp) + phys_enc->hw_cdm->ops.bind_pingpong_blk(phys_enc->hw_cdm, + PINGPONG_NONE); + if (phys_enc->hw_ctl->ops.update_pending_flush_cdm) + phys_enc->hw_ctl->ops.update_pending_flush_cdm(phys_enc->hw_ctl, + phys_enc->hw_cdm->idx); + } + if (dpu_enc->dsc) { dpu_encoder_unprep_dsc(dpu_enc); dpu_enc->dsc = NULL;
Reserve CDM blocks for writeback if the format of the output fb is YUV. At the moment, the reservation is done only for writeback but can easily be extended by relaxing the checks once other interfaces are ready to output YUV. changes in v3: - squash CDM disable during encoder cleanup into this change changes in v2: - use needs_cdm from topology struct - drop fb related checks from atomic_mode_set() Signed-off-by: Abhinav Kumar <quic_abhinavk@quicinc.com> --- drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c | 37 +++++++++++++++++++++ 1 file changed, 37 insertions(+)