Re: [PATCH v4 3/3] drm/display: split DSC helpers from DP helpers

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On 2024-05-28 22:39:20, 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.
> 
> Reviewed-by: Jessica Zhang <quic_jesszhan@xxxxxxxxxxx>
> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>

Reviewed-by: Marijn Suijten <marijn.suijten@xxxxxxxxxxxxxx>

> ---
>  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      | 6 +++---
>  6 files changed, 14 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/gpu/drm/amd/amdgpu/Kconfig b/drivers/gpu/drm/amd/amdgpu/Kconfig
> index 4232ab27f990..5933ca8c6b96 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 2ae0eb0638f3..3e3f63479544 100644
> --- a/drivers/gpu/drm/panel/Kconfig
> +++ b/drivers/gpu/drm/panel/Kconfig
> @@ -340,7 +340,7 @@ config DRM_PANEL_LG_SW43408
>  	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 LG sw43408 panel.
> @@ -549,7 +549,7 @@ 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
> @@ -907,7 +907,7 @@ 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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