| Message ID | 20230329-rfc-msm-dsc-helper-v11-1-30270e1eeac3@quicinc.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Introduce MSM-specific DSC helpers | expand |
On 2023-05-17 11:51:10, Jessica Zhang wrote: > Add helpers to calculate det_thresh_flatness and initial_scale_value as > these calculations are defined within the DSC spec. > > Signed-off-by: Jessica Zhang <quic_jesszhan@quicinc.com> Was this r-b dropped because of changing the return types in v10->v11? Reviewed-by: Marijn Suijten <marijn.suijten@somainline.org> > --- > include/drm/display/drm_dsc_helper.h | 10 ++++++++++ > 1 file changed, 10 insertions(+) > > diff --git a/include/drm/display/drm_dsc_helper.h b/include/drm/display/drm_dsc_helper.h > index 0bb0c3afd740..528dfb5e25fc 100644 > --- a/include/drm/display/drm_dsc_helper.h > +++ b/include/drm/display/drm_dsc_helper.h > @@ -25,5 +25,15 @@ void drm_dsc_set_rc_buf_thresh(struct drm_dsc_config *vdsc_cfg); > int drm_dsc_setup_rc_params(struct drm_dsc_config *vdsc_cfg, enum drm_dsc_params_kind kind); > int drm_dsc_compute_rc_parameters(struct drm_dsc_config *vdsc_cfg); > > +static inline u8 drm_dsc_initial_scale_value(const struct drm_dsc_config *dsc) > +{ > + return 8 * dsc->rc_model_size / (dsc->rc_model_size - dsc->initial_offset); > +} > + > +static inline u32 drm_dsc_flatness_det_thresh(const struct drm_dsc_config *dsc) > +{ > + return 2 << (dsc->bits_per_component - 8); > +} > + > #endif /* _DRM_DSC_HELPER_H_ */ > > > -- > 2.40.1 >
On 5/17/2023 2:13 PM, Marijn Suijten wrote: > On 2023-05-17 11:51:10, Jessica Zhang wrote: >> Add helpers to calculate det_thresh_flatness and initial_scale_value as >> these calculations are defined within the DSC spec. >> >> Signed-off-by: Jessica Zhang <quic_jesszhan@quicinc.com> > > Was this r-b dropped because of changing the return types in v10->v11? Hi Marijn, Yea. I'm not sure what the protocol is for keeping/dropping r-b tags, so dropped the r-b because I wasn't sure if the change counted as significant. Thanks, Jessica Zhang > > Reviewed-by: Marijn Suijten <marijn.suijten@somainline.org> > >> --- >> include/drm/display/drm_dsc_helper.h | 10 ++++++++++ >> 1 file changed, 10 insertions(+) >> >> diff --git a/include/drm/display/drm_dsc_helper.h b/include/drm/display/drm_dsc_helper.h >> index 0bb0c3afd740..528dfb5e25fc 100644 >> --- a/include/drm/display/drm_dsc_helper.h >> +++ b/include/drm/display/drm_dsc_helper.h >> @@ -25,5 +25,15 @@ void drm_dsc_set_rc_buf_thresh(struct drm_dsc_config *vdsc_cfg); >> int drm_dsc_setup_rc_params(struct drm_dsc_config *vdsc_cfg, enum drm_dsc_params_kind kind); >> int drm_dsc_compute_rc_parameters(struct drm_dsc_config *vdsc_cfg); >> >> +static inline u8 drm_dsc_initial_scale_value(const struct drm_dsc_config *dsc) >> +{ >> + return 8 * dsc->rc_model_size / (dsc->rc_model_size - dsc->initial_offset); >> +} >> + >> +static inline u32 drm_dsc_flatness_det_thresh(const struct drm_dsc_config *dsc) >> +{ >> + return 2 << (dsc->bits_per_component - 8); >> +} >> + >> #endif /* _DRM_DSC_HELPER_H_ */ >> >> >> -- >> 2.40.1 >>
On 2023-05-17 14:32:42, Jessica Zhang wrote: > > > On 5/17/2023 2:13 PM, Marijn Suijten wrote: > > On 2023-05-17 11:51:10, Jessica Zhang wrote: > >> Add helpers to calculate det_thresh_flatness and initial_scale_value as > >> these calculations are defined within the DSC spec. > >> > >> Signed-off-by: Jessica Zhang <quic_jesszhan@quicinc.com> > > > > Was this r-b dropped because of changing the return types in v10->v11? > > Hi Marijn, > > Yea. I'm not sure what the protocol is for keeping/dropping r-b tags, so > dropped the r-b because I wasn't sure if the change counted as significant. Yeah, seems to be standard practice on nontrivial changes but in this case I left a review on a patch that already has my r-b, and you changed exactly what I requested. Probably fine either way. - Marijn > > Thanks, > > Jessica Zhang > > > > > Reviewed-by: Marijn Suijten <marijn.suijten@somainline.org> > > > >> --- > >> include/drm/display/drm_dsc_helper.h | 10 ++++++++++ > >> 1 file changed, 10 insertions(+) > >> > >> diff --git a/include/drm/display/drm_dsc_helper.h b/include/drm/display/drm_dsc_helper.h > >> index 0bb0c3afd740..528dfb5e25fc 100644 > >> --- a/include/drm/display/drm_dsc_helper.h > >> +++ b/include/drm/display/drm_dsc_helper.h > >> @@ -25,5 +25,15 @@ void drm_dsc_set_rc_buf_thresh(struct drm_dsc_config *vdsc_cfg); > >> int drm_dsc_setup_rc_params(struct drm_dsc_config *vdsc_cfg, enum drm_dsc_params_kind kind); > >> int drm_dsc_compute_rc_parameters(struct drm_dsc_config *vdsc_cfg); > >> > >> +static inline u8 drm_dsc_initial_scale_value(const struct drm_dsc_config *dsc) > >> +{ > >> + return 8 * dsc->rc_model_size / (dsc->rc_model_size - dsc->initial_offset); > >> +} > >> + > >> +static inline u32 drm_dsc_flatness_det_thresh(const struct drm_dsc_config *dsc) > >> +{ > >> + return 2 << (dsc->bits_per_component - 8); > >> +} > >> + > >> #endif /* _DRM_DSC_HELPER_H_ */ > >> > >> > >> -- > >> 2.40.1 > >>
On 18/05/2023 01:58, Marijn Suijten wrote: > On 2023-05-17 14:32:42, Jessica Zhang wrote: >> >> >> On 5/17/2023 2:13 PM, Marijn Suijten wrote: >>> On 2023-05-17 11:51:10, Jessica Zhang wrote: >>>> Add helpers to calculate det_thresh_flatness and initial_scale_value as >>>> these calculations are defined within the DSC spec. >>>> >>>> Signed-off-by: Jessica Zhang <quic_jesszhan@quicinc.com> >>> >>> Was this r-b dropped because of changing the return types in v10->v11? >> >> Hi Marijn, >> >> Yea. I'm not sure what the protocol is for keeping/dropping r-b tags, so >> dropped the r-b because I wasn't sure if the change counted as significant. > > Yeah, seems to be standard practice on nontrivial changes but in this > case I left a review on a patch that already has my r-b, and you changed > exactly what I requested. Probably fine either way. Yes. Usually for trivial changes (e.g. whitespaces, renames, commit message changes) one can keep the RB/AB/TB tags.
diff --git a/include/drm/display/drm_dsc_helper.h b/include/drm/display/drm_dsc_helper.h index 0bb0c3afd740..528dfb5e25fc 100644 --- a/include/drm/display/drm_dsc_helper.h +++ b/include/drm/display/drm_dsc_helper.h @@ -25,5 +25,15 @@ void drm_dsc_set_rc_buf_thresh(struct drm_dsc_config *vdsc_cfg); int drm_dsc_setup_rc_params(struct drm_dsc_config *vdsc_cfg, enum drm_dsc_params_kind kind); int drm_dsc_compute_rc_parameters(struct drm_dsc_config *vdsc_cfg); +static inline u8 drm_dsc_initial_scale_value(const struct drm_dsc_config *dsc) +{ + return 8 * dsc->rc_model_size / (dsc->rc_model_size - dsc->initial_offset); +} + +static inline u32 drm_dsc_flatness_det_thresh(const struct drm_dsc_config *dsc) +{ + return 2 << (dsc->bits_per_component - 8); +} + #endif /* _DRM_DSC_HELPER_H_ */
Add helpers to calculate det_thresh_flatness and initial_scale_value as these calculations are defined within the DSC spec. Signed-off-by: Jessica Zhang <quic_jesszhan@quicinc.com> --- include/drm/display/drm_dsc_helper.h | 10 ++++++++++ 1 file changed, 10 insertions(+)