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

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Hi Laurent,

Thanks for the feedback.

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

OK, Will fix this.

Cheers,
Biju

> 
> 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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