Re: [PATCH v3 1/3] drm/display: split DSC helpers from DP helpers

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On 5/21/2024 11:25 PM, Dmitry Baryshkov wrote:
Currently the DRM DSC functions are selected by the
DRM_DISPLAY_DP_HELPER Kconfig symbol. This is not optimal, since the DSI
code (both panel and host drivers) end up selecting the seemingly
irrelevant DP helpers. Split the DSC code to be guarded by the separate
DRM_DISPLAY_DSC_HELPER Kconfig symbol.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>

Hi Dmitry,

LGTM

Reviewed-by: Jessica Zhang <quic_jesszhan@xxxxxxxxxxx>

Thanks,

Jessica Zhang

---
  drivers/gpu/drm/amd/amdgpu/Kconfig | 1 +
  drivers/gpu/drm/display/Kconfig    | 6 ++++++
  drivers/gpu/drm/display/Makefile   | 3 ++-
  drivers/gpu/drm/i915/Kconfig       | 1 +
  drivers/gpu/drm/msm/Kconfig        | 1 +
  drivers/gpu/drm/panel/Kconfig      | 4 ++--
  6 files changed, 13 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/Kconfig b/drivers/gpu/drm/amd/amdgpu/Kconfig
index 22d88f8ef527..b69d5c4a5367 100644
--- a/drivers/gpu/drm/amd/amdgpu/Kconfig
+++ b/drivers/gpu/drm/amd/amdgpu/Kconfig
@@ -6,6 +6,7 @@ config DRM_AMDGPU
  	depends on !UML
  	select FW_LOADER
  	select DRM_DISPLAY_DP_HELPER
+	select DRM_DISPLAY_DSC_HELPER
  	select DRM_DISPLAY_HDMI_HELPER
  	select DRM_DISPLAY_HDCP_HELPER
  	select DRM_DISPLAY_HELPER
diff --git a/drivers/gpu/drm/display/Kconfig b/drivers/gpu/drm/display/Kconfig
index 864a6488bfdf..f524cf95dec3 100644
--- a/drivers/gpu/drm/display/Kconfig
+++ b/drivers/gpu/drm/display/Kconfig
@@ -59,6 +59,12 @@ config DRM_DISPLAY_DP_TUNNEL_STATE_DEBUG
If in doubt, say "N". +config DRM_DISPLAY_DSC_HELPER
+	bool
+	depends on DRM_DISPLAY_HELPER
+	help
+	  DRM display helpers for VESA DSC (used by DSI and DisplayPort).
+
  config DRM_DISPLAY_HDCP_HELPER
  	bool
  	depends on DRM_DISPLAY_HELPER
diff --git a/drivers/gpu/drm/display/Makefile b/drivers/gpu/drm/display/Makefile
index 17d2cc73ff56..2ec71e15c3cb 100644
--- a/drivers/gpu/drm/display/Makefile
+++ b/drivers/gpu/drm/display/Makefile
@@ -6,7 +6,8 @@ drm_display_helper-y := drm_display_helper_mod.o
  drm_display_helper-$(CONFIG_DRM_DISPLAY_DP_HELPER) += \
  	drm_dp_dual_mode_helper.o \
  	drm_dp_helper.o \
-	drm_dp_mst_topology.o \
+	drm_dp_mst_topology.o
+drm_display_helper-$(CONFIG_DRM_DISPLAY_DSC_HELPER) += \
  	drm_dsc_helper.o
  drm_display_helper-$(CONFIG_DRM_DISPLAY_DP_TUNNEL) += \
  	drm_dp_tunnel.o
diff --git a/drivers/gpu/drm/i915/Kconfig b/drivers/gpu/drm/i915/Kconfig
index 5932024f8f95..117b84260b1c 100644
--- a/drivers/gpu/drm/i915/Kconfig
+++ b/drivers/gpu/drm/i915/Kconfig
@@ -11,6 +11,7 @@ config DRM_I915
  	select SHMEM
  	select TMPFS
  	select DRM_DISPLAY_DP_HELPER
+	select DRM_DISPLAY_DSC_HELPER
  	select DRM_DISPLAY_HDCP_HELPER
  	select DRM_DISPLAY_HDMI_HELPER
  	select DRM_DISPLAY_HELPER
diff --git a/drivers/gpu/drm/msm/Kconfig b/drivers/gpu/drm/msm/Kconfig
index 1931ecf73e32..6dcd26180611 100644
--- a/drivers/gpu/drm/msm/Kconfig
+++ b/drivers/gpu/drm/msm/Kconfig
@@ -111,6 +111,7 @@ config DRM_MSM_DSI
  	depends on DRM_MSM
  	select DRM_PANEL
  	select DRM_MIPI_DSI
+	select DRM_DISPLAY_DSC_HELPER
  	default y
  	help
  	  Choose this option if you have a need for MIPI DSI connector
diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig
index 982324ef5a41..4a2f621433ef 100644
--- a/drivers/gpu/drm/panel/Kconfig
+++ b/drivers/gpu/drm/panel/Kconfig
@@ -547,7 +547,7 @@ config DRM_PANEL_RAYDIUM_RM692E5
  	depends on OF
  	depends on DRM_MIPI_DSI
  	depends on BACKLIGHT_CLASS_DEVICE
-	select DRM_DISPLAY_DP_HELPER
+	select DRM_DISPLAY_DSC_HELPER
  	select DRM_DISPLAY_HELPER
  	help
  	  Say Y here if you want to enable support for Raydium RM692E5-based
@@ -905,7 +905,7 @@ config DRM_PANEL_VISIONOX_R66451
  	depends on OF
  	depends on DRM_MIPI_DSI
  	depends on BACKLIGHT_CLASS_DEVICE
-	select DRM_DISPLAY_DP_HELPER
+	select DRM_DISPLAY_DSC_HELPER
  	select DRM_DISPLAY_HELPER
  	help
  	  Say Y here if you want to enable support for Visionox

--
2.39.2





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