Re: [PATCH v2 2/7] drm: rcar-du: Add num_rpf to struct rcar_du_device_info

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Hi Biju,

Thank you for the patch.

On Wed, Mar 16, 2022 at 01:10:55PM +0000, Biju Das wrote:
> Number of RPF's VSP is different on R-Car and RZ/G2L
>  R-Car Gen3 -> 5 RPFs
>  R-Car Gen2 -> 4 RPFs
>  RZ/G2L -> 2 RPFs
> 
> Add num_rpf to struct rcar_du_device_info to support later
> SoC without any code changes.
> 
> Signed-off-by: Biju Das <biju.das.jz@xxxxxxxxxxxxxx>
> ---
> v1->v2:
>  * No change
> RFC->v1:
>  * Fixed the comment for num_rpf s/rpf's/RPFs/ and s/vsp/VSP/
> RFC:
>  * https://patchwork.kernel.org/project/linux-renesas-soc/patch/20220112174612.10773-12-biju.das.jz@xxxxxxxxxxxxxx/
> ---
>  drivers/gpu/drm/rcar-du/rcar_du_drv.c | 17 +++++++++++++++++
>  drivers/gpu/drm/rcar-du/rcar_du_drv.h |  2 ++
>  drivers/gpu/drm/rcar-du/rcar_du_vsp.c |  6 +-----
>  3 files changed, 20 insertions(+), 5 deletions(-)
> 
> diff --git a/drivers/gpu/drm/rcar-du/rcar_du_drv.c b/drivers/gpu/drm/rcar-du/rcar_du_drv.c
> index 957ea97541d5..1bc7325aa356 100644
> --- a/drivers/gpu/drm/rcar-du/rcar_du_drv.c
> +++ b/drivers/gpu/drm/rcar-du/rcar_du_drv.c
> @@ -55,6 +55,7 @@ static const struct rcar_du_device_info rzg1_du_r8a7743_info = {
>  		},
>  	},
>  	.num_lvds = 1,
> +	.num_rpf = 4,
>  };
>  
>  static const struct rcar_du_device_info rzg1_du_r8a7745_info = {
> @@ -77,6 +78,7 @@ static const struct rcar_du_device_info rzg1_du_r8a7745_info = {
>  			.port = 1,
>  		},
>  	},
> +	.num_rpf = 4,
>  };
>  
>  static const struct rcar_du_device_info rzg1_du_r8a77470_info = {
> @@ -104,6 +106,7 @@ static const struct rcar_du_device_info rzg1_du_r8a77470_info = {
>  			.port = 2,
>  		},
>  	},
> +	.num_rpf = 4,
>  };
>  
>  static const struct rcar_du_device_info rcar_du_r8a774a1_info = {
> @@ -133,6 +136,7 @@ static const struct rcar_du_device_info rcar_du_r8a774a1_info = {
>  		},
>  	},
>  	.num_lvds = 1,
> +	.num_rpf = 5,
>  	.dpll_mask =  BIT(1),
>  };
>  
> @@ -163,6 +167,7 @@ static const struct rcar_du_device_info rcar_du_r8a774b1_info = {
>  		},
>  	},
>  	.num_lvds = 1,
> +	.num_rpf = 5,
>  	.dpll_mask =  BIT(1),
>  };
>  
> @@ -190,6 +195,7 @@ static const struct rcar_du_device_info rcar_du_r8a774c0_info = {
>  		},
>  	},
>  	.num_lvds = 2,
> +	.num_rpf = 4,
>  	.lvds_clk_mask =  BIT(1) | BIT(0),
>  };
>  
> @@ -220,6 +226,7 @@ static const struct rcar_du_device_info rcar_du_r8a774e1_info = {
>  		},
>  	},
>  	.num_lvds = 1,
> +	.num_rpf = 5,
>  	.dpll_mask =  BIT(1),
>  };
>  
> @@ -272,6 +279,7 @@ static const struct rcar_du_device_info rcar_du_r8a7790_info = {
>  		},
>  	},
>  	.num_lvds = 2,
> +	.num_rpf = 4,
>  };
>  
>  /* M2-W (r8a7791) and M2-N (r8a7793) are identical */
> @@ -297,6 +305,7 @@ static const struct rcar_du_device_info rcar_du_r8a7791_info = {
>  		},
>  	},
>  	.num_lvds = 1,
> +	.num_rpf = 4,
>  };
>  
>  static const struct rcar_du_device_info rcar_du_r8a7792_info = {
> @@ -317,6 +326,7 @@ static const struct rcar_du_device_info rcar_du_r8a7792_info = {
>  			.port = 1,
>  		},
>  	},
> +	.num_rpf = 4,
>  };
>  
>  static const struct rcar_du_device_info rcar_du_r8a7794_info = {
> @@ -340,6 +350,7 @@ static const struct rcar_du_device_info rcar_du_r8a7794_info = {
>  			.port = 1,
>  		},
>  	},
> +	.num_rpf = 4,
>  };
>  
>  static const struct rcar_du_device_info rcar_du_r8a7795_info = {
> @@ -373,6 +384,7 @@ static const struct rcar_du_device_info rcar_du_r8a7795_info = {
>  		},
>  	},
>  	.num_lvds = 1,
> +	.num_rpf = 5,
>  	.dpll_mask =  BIT(2) | BIT(1),
>  };
>  
> @@ -403,6 +415,7 @@ static const struct rcar_du_device_info rcar_du_r8a7796_info = {
>  		},
>  	},
>  	.num_lvds = 1,
> +	.num_rpf = 5,
>  	.dpll_mask =  BIT(1),
>  };
>  
> @@ -433,6 +446,7 @@ static const struct rcar_du_device_info rcar_du_r8a77965_info = {
>  		},
>  	},
>  	.num_lvds = 1,
> +	.num_rpf = 5,
>  	.dpll_mask =  BIT(1),
>  };
>  
> @@ -459,6 +473,7 @@ static const struct rcar_du_device_info rcar_du_r8a77970_info = {
>  		},
>  	},
>  	.num_lvds = 1,
> +	.num_rpf = 5,
>  };
>  
>  static const struct rcar_du_device_info rcar_du_r8a7799x_info = {
> @@ -486,6 +501,7 @@ static const struct rcar_du_device_info rcar_du_r8a7799x_info = {
>  		},
>  	},
>  	.num_lvds = 2,
> +	.num_rpf = 5,
>  	.lvds_clk_mask =  BIT(1) | BIT(0),
>  };
>  
> @@ -505,6 +521,7 @@ static const struct rcar_du_device_info rcar_du_r8a779a0_info = {
>  			.port = 1,
>  		},
>  	},
> +	.num_rpf = 5,
>  	.dsi_clk_mask =  BIT(1) | BIT(0),
>  };
>  
> diff --git a/drivers/gpu/drm/rcar-du/rcar_du_drv.h b/drivers/gpu/drm/rcar-du/rcar_du_drv.h
> index 101f42df86ea..68c5de59d18d 100644
> --- a/drivers/gpu/drm/rcar-du/rcar_du_drv.h
> +++ b/drivers/gpu/drm/rcar-du/rcar_du_drv.h
> @@ -69,6 +69,7 @@ struct rcar_du_output_routing {
>   * @channels_mask: bit mask of available DU channels
>   * @routes: array of CRTC to output routes, indexed by output (RCAR_DU_OUTPUT_*)
>   * @num_lvds: number of internal LVDS encoders
> + * @num_rpf: max number of RPFs in VSP

s/max //

Reviewed-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>

>   * @dpll_mask: bit mask of DU channels equipped with a DPLL
>   * @dsi_clk_mask: bitmask of channels that can use the DSI clock as dot clock
>   * @lvds_clk_mask: bitmask of channels that can use the LVDS clock as dot clock
> @@ -80,6 +81,7 @@ struct rcar_du_device_info {
>  	unsigned int channels_mask;
>  	struct rcar_du_output_routing routes[RCAR_DU_OUTPUT_MAX];
>  	unsigned int num_lvds;
> +	unsigned int num_rpf;
>  	unsigned int dpll_mask;
>  	unsigned int dsi_clk_mask;
>  	unsigned int lvds_clk_mask;
> diff --git a/drivers/gpu/drm/rcar-du/rcar_du_vsp.c b/drivers/gpu/drm/rcar-du/rcar_du_vsp.c
> index b7fc5b069cbc..cf045a203aa5 100644
> --- a/drivers/gpu/drm/rcar-du/rcar_du_vsp.c
> +++ b/drivers/gpu/drm/rcar-du/rcar_du_vsp.c
> @@ -415,11 +415,7 @@ int rcar_du_vsp_init(struct rcar_du_vsp *vsp, struct device_node *np,
>  	if (ret < 0)
>  		return ret;
>  
> -	 /*
> -	  * The VSP2D (Gen3) has 5 RPFs, but the VSP1D (Gen2) is limited to
> -	  * 4 RPFs.
> -	  */
> -	num_planes = rcdu->info->gen >= 3 ? 5 : 4;
> +	num_planes = rcdu->info->num_rpf;
>  
>  	vsp->planes = kcalloc(num_planes, sizeof(*vsp->planes), GFP_KERNEL);
>  	if (!vsp->planes)

-- 
Regards,

Laurent Pinchart



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