linux-kernel - Re: [PATCH v6 3/6] drm/msm/dpu: enable compression bit in cfg2 for DSC

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Date: Fri, 31 May 2024 10:17:38 -0700
From: Jessica Zhang <quic_jesszhan@...cinc.com>
To: Jun Nie <jun.nie@...aro.org>, Rob Clark <robdclark@...il.com>,
        "Abhinav
 Kumar" <quic_abhinavk@...cinc.com>,
        Dmitry Baryshkov
	<dmitry.baryshkov@...aro.org>,
        Sean Paul <sean@...rly.run>,
        Marijn Suijten
	<marijn.suijten@...ainline.org>,
        David Airlie <airlied@...il.com>, "Daniel
 Vetter" <daniel@...ll.ch>,
        Vinod Koul <vkoul@...nel.org>
CC: <linux-arm-msm@...r.kernel.org>, <dri-devel@...ts.freedesktop.org>,
        <freedreno@...ts.freedesktop.org>, <linux-kernel@...r.kernel.org>,
        "Neil
 Armstrong" <neil.armstrong@...aro.org>
Subject: Re: [PATCH v6 3/6] drm/msm/dpu: enable compression bit in cfg2 for
 DSC



On 5/29/2024 10:56 PM, Jun Nie wrote:
> Enable compression bit in cfg2 register for DSC in the DSI case
> per hardware version.
> 
> Signed-off-by: Jun Nie <jun.nie@...aro.org>
> Tested-by: Neil Armstrong <neil.armstrong@...aro.org> # on SM8550-QRD
> Tested-by: Neil Armstrong <neil.armstrong@...aro.org> # on SM8650-QRD
> Tested-by: Neil Armstrong <neil.armstrong@...aro.org> # on SM8650-HDK
> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>

Hi Jun,

LGTM

Reviewed-by: Jessica Zhang <quic_jesszhan@...cinc.com>

Thanks,

Jessica Zhang

> ---
>   drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_vid.c | 3 ++-
>   drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.c          | 8 +++++++-
>   drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.h          | 3 ++-
>   3 files changed, 11 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_vid.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_vid.c
> index 925ec6ada0e1..f2aab3e7c783 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_vid.c
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_vid.c
> @@ -307,7 +307,8 @@ static void dpu_encoder_phys_vid_setup_timing_engine(
>   
>   	spin_lock_irqsave(phys_enc->enc_spinlock, lock_flags);
>   	phys_enc->hw_intf->ops.setup_timing_gen(phys_enc->hw_intf,
> -			&timing_params, fmt);
> +			&timing_params, fmt,
> +			phys_enc->dpu_kms->catalog->mdss_ver);
>   	phys_enc->hw_ctl->ops.setup_intf_cfg(phys_enc->hw_ctl, &intf_cfg);
>   
>   	/* setup which pp blk will connect to this intf */
> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.c
> index f97221423249..fa6debda0774 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.c
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.c
> @@ -98,7 +98,8 @@
>   
>   static void dpu_hw_intf_setup_timing_engine(struct dpu_hw_intf *intf,
>   		const struct dpu_hw_intf_timing_params *p,
> -		const struct msm_format *fmt)
> +		const struct msm_format *fmt,
> +		const struct dpu_mdss_version *mdss_ver)
>   {
>   	struct dpu_hw_blk_reg_map *c = &intf->hw;
>   	u32 hsync_period, vsync_period;
> @@ -177,6 +178,11 @@ static void dpu_hw_intf_setup_timing_engine(struct dpu_hw_intf *intf,
>   	if (p->wide_bus_en && !dp_intf)
>   		data_width = p->width >> 1;
>   
> +	/* TODO: handle DSC+DP case, we only handle DSC+DSI case so far */
> +	if (p->compression_en && !dp_intf &&
> +	    mdss_ver->core_major_ver >= 7)
> +		intf_cfg2 |= INTF_CFG2_DCE_DATA_COMPRESS;
> +
>   	hsync_data_start_x = hsync_start_x;
>   	hsync_data_end_x =  hsync_start_x + data_width - 1;
>   
> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.h
> index f9015c67a574..ef947bf77693 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.h
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.h
> @@ -81,7 +81,8 @@ struct dpu_hw_intf_cmd_mode_cfg {
>   struct dpu_hw_intf_ops {
>   	void (*setup_timing_gen)(struct dpu_hw_intf *intf,
>   			const struct dpu_hw_intf_timing_params *p,
> -			const struct msm_format *fmt);
> +			const struct msm_format *fmt,
> +			const struct dpu_mdss_version *mdss_ver);
>   
>   	void (*setup_prg_fetch)(struct dpu_hw_intf *intf,
>   			const struct dpu_hw_intf_prog_fetch *fetch);
> 
> -- 
> 2.34.1
>