linux-kernel - Re: [RFC PATCH 03/13] drm/msm/dsi: add support for dsc data

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Date:   Fri, 28 May 2021 02:45:07 +0300
From:   Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To:     Vinod Koul <vkoul@...nel.org>, Rob Clark <robdclark@...il.com>
Cc:     linux-arm-msm@...r.kernel.org,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Jonathan Marek <jonathan@...ek.ca>,
        Abhinav Kumar <abhinavk@...eaurora.org>,
        linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        freedreno@...ts.freedesktop.org
Subject: Re: [RFC PATCH 03/13] drm/msm/dsi: add support for dsc data

On 21/05/2021 15:49, Vinod Koul wrote:
> DSC needs some configuration from device tree, add support to read and
> store these params and add DSC structures in msm_drv
> 
> Signed-off-by: Vinod Koul <vkoul@...nel.org>
> ---
>   drivers/gpu/drm/msm/dsi/dsi_host.c | 170 +++++++++++++++++++++++++++++
>   drivers/gpu/drm/msm/msm_drv.h      |  32 ++++++
>   2 files changed, 202 insertions(+)
> 


[skipped]


>   		DRM_DEV_ERROR(dev, "%s: invalid lane configuration %d\n",
> diff --git a/drivers/gpu/drm/msm/msm_drv.h b/drivers/gpu/drm/msm/msm_drv.h
> index 2668941df529..26661dd43936 100644
> --- a/drivers/gpu/drm/msm/msm_drv.h
> +++ b/drivers/gpu/drm/msm/msm_drv.h
> @@ -30,6 +30,7 @@
>   #include <drm/drm_plane_helper.h>
>   #include <drm/drm_probe_helper.h>
>   #include <drm/drm_fb_helper.h>
> +#include <drm/drm_dsc.h>
>   #include <drm/msm_drm.h>
>   #include <drm/drm_gem.h>
>   
> @@ -70,6 +71,16 @@ enum msm_mdp_plane_property {
>   #define MSM_GPU_MAX_RINGS 4
>   #define MAX_H_TILES_PER_DISPLAY 2
>   
> +/**
> + * enum msm_display_compression_type - compression method used for pixel stream
> + * @MSM_DISPLAY_COMPRESSION_NONE:	Pixel data is not compressed
> + * @MSM_DISPLAY_COMPRESSION_DSC:	DSC compresison is used
> + */
> +enum msm_display_compression_type {
> +	MSM_DISPLAY_COMPRESSION_NONE,
> +	MSM_DISPLAY_COMPRESSION_DSC,
> +};
> +

Seems to be unused

>   /**
>    * enum msm_display_caps - features/capabilities supported by displays
>    * @MSM_DISPLAY_CAP_VID_MODE:           Video or "active" mode supported



-- 
With best wishes
Dmitry