On 12/16/2024 2:24 PM, Dmitry Baryshkov wrote:
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.baryshkov@xxxxxxxxxx>
---
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.
hmm, if you would indeed like it to be a separate API , the removal from
the above chunk should go together in the same patch otherwise it looks
redundant.
+
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);
