On Mon, Dec 16, 2024 at 11:46:21AM -0800, Abhinav Kumar wrote:
>
>
> On 12/15/2024 2:44 PM, Dmitry Baryshkov wrote:
> > It's the dp_panel's duty to clear the MMSS_DP_DSC_DTO register. Once DP
> > driver gets DSC support, it will handle that register in other places
> > too. Split a call to write 0x0 to that register to a separate function.
> >
> > Signed-off-by: Dmitry Baryshkov <dmitry.barysh...@linaro.org>
> > ---
> > drivers/gpu/drm/msm/dp/dp_catalog.c | 8 ++++++++
> > drivers/gpu/drm/msm/dp/dp_catalog.h | 2 ++
> > drivers/gpu/drm/msm/dp/dp_ctrl.c | 2 ++
> > 3 files changed, 12 insertions(+)
> >
> > diff --git a/drivers/gpu/drm/msm/dp/dp_catalog.c
> > b/drivers/gpu/drm/msm/dp/dp_catalog.c
> > index
> > 7b7eadb2f83b169d8df27ee93589abe05b38f3ae..354ec834f9357c4797fc08a4532e69acc67b4317
> > 100644
> > --- a/drivers/gpu/drm/msm/dp/dp_catalog.c
> > +++ b/drivers/gpu/drm/msm/dp/dp_catalog.c
> > @@ -1039,6 +1039,14 @@ void msm_dp_catalog_panel_tpg_disable(struct
> > msm_dp_catalog *msm_dp_catalog)
> > msm_dp_write_p0(catalog, MMSS_DP_TIMING_ENGINE_EN, 0x0);
> > }
> > +void msm_dp_catalog_panel_clear_dsc_dto(struct msm_dp_catalog
> > *msm_dp_catalog)
> > +{
> > + struct msm_dp_catalog_private *catalog = container_of(msm_dp_catalog,
> > + struct msm_dp_catalog_private, msm_dp_catalog);
> > +
> > + msm_dp_write_p0(catalog, MMSS_DP_DSC_DTO, 0x0);
> > +}
>
> This is already done msm_dp_catalog_ctrl_config_msa(), this is either a
> duplicate or redundant.
>
> void msm_dp_catalog_ctrl_config_msa(..........)
> {
> **********
> msm_dp_write_link(catalog, REG_DP_SOFTWARE_NVID, nvid);
> msm_dp_write_p0(catalog, MMSS_DP_DSC_DTO, 0x0);
> }
The chunk to remove it got squashed into a different patch.
>
> > +
> > static void __iomem *msm_dp_ioremap(struct platform_device *pdev, int
> > idx, size_t *len)
> > {
> > struct resource *res;
> > diff --git a/drivers/gpu/drm/msm/dp/dp_catalog.h
> > b/drivers/gpu/drm/msm/dp/dp_catalog.h
> > index
> > 6678b0ac9a67881244884d59487fa288d33d1be7..08bb42e91b779633875dbeb4130bc55a6571cfb1
> > 100644
> > --- a/drivers/gpu/drm/msm/dp/dp_catalog.h
> > +++ b/drivers/gpu/drm/msm/dp/dp_catalog.h
> > @@ -92,6 +92,8 @@ void msm_dp_catalog_panel_tpg_enable(struct
> > msm_dp_catalog *msm_dp_catalog,
> > struct drm_display_mode *drm_mode);
> > void msm_dp_catalog_panel_tpg_disable(struct msm_dp_catalog
> > *msm_dp_catalog);
> > +void msm_dp_catalog_panel_clear_dsc_dto(struct msm_dp_catalog
> > *msm_dp_catalog);
> > +
> > struct msm_dp_catalog *msm_dp_catalog_get(struct device *dev);
> > /* DP Audio APIs */
> > diff --git a/drivers/gpu/drm/msm/dp/dp_ctrl.c
> > b/drivers/gpu/drm/msm/dp/dp_ctrl.c
> > index
> > 9c463ae2f8fae916661fef1c7e225f55c1026478..b9c461fee96f8fae9259ce03a32e1155b42d17bb
> > 100644
> > --- a/drivers/gpu/drm/msm/dp/dp_ctrl.c
> > +++ b/drivers/gpu/drm/msm/dp/dp_ctrl.c
> > @@ -2011,6 +2011,8 @@ int msm_dp_ctrl_on_stream(struct msm_dp_ctrl
> > *msm_dp_ctrl, bool force_link_train
> > pixel_rate_orig,
> > ctrl->panel->msm_dp_mode.out_fmt_is_yuv_420);
> > + msm_dp_catalog_panel_clear_dsc_dto(ctrl->catalog);
> > +
> > msm_dp_ctrl_setup_tr_unit(ctrl);
> > msm_dp_catalog_ctrl_state_ctrl(ctrl->catalog, DP_STATE_CTRL_SEND_VIDEO);
> >
--
With best wishes
Dmitry
