diff mbox series

[v4,07/30] drm/dp: Add DP_HBLANK_EXPANSION_CAPABLE and DSC_PASSTHROUGH_EN DPCD flags

Message ID 20231030155843.2251023-8-imre.deak@intel.com (mailing list archive)
State New, archived
Headers show
Series None | expand

Commit Message

Imre Deak Oct. 30, 2023, 3:58 p.m. UTC 
Add the DPCD flag to enable DSC passthrough in a last branch device,
used in a follow-up i915 patch.

Also add a flag to detect HBLANK expansion support in a branch device,
used by a workaround in a follow-up i915 patch.

Cc: Lyude Paul <lyude@redhat.com>
Cc: dri-devel@lists.freedesktop.org
Reviewed-by: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
---
 include/drm/display/drm_dp.h | 2 ++
 1 file changed, 2 insertions(+)

Comments

Lyude Paul Nov. 7, 2023, 10:35 p.m. UTC | #1 
Reviewed-by: Lyude Paul <lyude@redhat.com>

On Mon, 2023-10-30 at 17:58 +0200, Imre Deak wrote:
> Add the DPCD flag to enable DSC passthrough in a last branch device,
> used in a follow-up i915 patch.
> 
> Also add a flag to detect HBLANK expansion support in a branch device,
> used by a workaround in a follow-up i915 patch.
> 
> Cc: Lyude Paul <lyude@redhat.com>
> Cc: dri-devel@lists.freedesktop.org
> Reviewed-by: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>
> Signed-off-by: Imre Deak <imre.deak@intel.com>
> ---
>  include/drm/display/drm_dp.h | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/include/drm/display/drm_dp.h b/include/drm/display/drm_dp.h
> index e69cece404b3c..763d45a612f35 100644
> --- a/include/drm/display/drm_dp.h
> +++ b/include/drm/display/drm_dp.h
> @@ -148,6 +148,7 @@
>  #define DP_RECEIVE_PORT_0_CAP_0		    0x008
>  # define DP_LOCAL_EDID_PRESENT		    (1 << 1)
>  # define DP_ASSOCIATED_TO_PRECEDING_PORT    (1 << 2)
> +# define DP_HBLANK_EXPANSION_CAPABLE        (1 << 3)
>  
>  #define DP_RECEIVE_PORT_0_BUFFER_SIZE	    0x009
>  
> @@ -699,6 +700,7 @@
>  
>  #define DP_DSC_ENABLE                       0x160   /* DP 1.4 */
>  # define DP_DECOMPRESSION_EN                (1 << 0)
> +# define DP_DSC_PASSTHROUGH_EN		    (1 << 1)
>  #define DP_DSC_CONFIGURATION				0x161	/* DP 2.0 */
>  
>  #define DP_PSR_EN_CFG				0x170   /* XXX 1.2? */
diff mbox series

Patch

diff --git a/include/drm/display/drm_dp.h b/include/drm/display/drm_dp.h
index e69cece404b3c..763d45a612f35 100644
--- a/include/drm/display/drm_dp.h
+++ b/include/drm/display/drm_dp.h
@@ -148,6 +148,7 @@ 
 #define DP_RECEIVE_PORT_0_CAP_0		    0x008
 # define DP_LOCAL_EDID_PRESENT		    (1 << 1)
 # define DP_ASSOCIATED_TO_PRECEDING_PORT    (1 << 2)
+# define DP_HBLANK_EXPANSION_CAPABLE        (1 << 3)
 
 #define DP_RECEIVE_PORT_0_BUFFER_SIZE	    0x009
 
@@ -699,6 +700,7 @@ 
 
 #define DP_DSC_ENABLE                       0x160   /* DP 1.4 */
 # define DP_DECOMPRESSION_EN                (1 << 0)
+# define DP_DSC_PASSTHROUGH_EN		    (1 << 1)
 #define DP_DSC_CONFIGURATION				0x161	/* DP 2.0 */
 
 #define DP_PSR_EN_CFG				0x170   /* XXX 1.2? */