Re: [PATCH v1 3/6] soc: mediatek: mmsys: add support for MT8195 VPPSYS

[moudy ho <moudy.ho@mediatek.com>]

Hi Angelo,

On Tue, 2022-10-04 at 14:17 +0200, AngeloGioacchino Del Regno wrote:
> Il 04/10/22 11:33, Moudy Ho ha scritto:
> > From: "Roy-CW.Yeh" <roy-cw.yeh@mediatek.com>
> > 
> > Add MT8195 VPPSYS0 and VPPSYS1 driver data.
> > 
> > Signed-off-by: Roy-CW.Yeh <roy-cw.yeh@mediatek.com>
> > ---
> >   drivers/soc/mediatek/mtk-mmsys.c | 20 +++++++++++++++++++-
> >   drivers/soc/mediatek/mtk-mmsys.h |  1 +
> >   2 files changed, 20 insertions(+), 1 deletion(-)
> > 
> > diff --git a/drivers/soc/mediatek/mtk-mmsys.c
> > b/drivers/soc/mediatek/mtk-mmsys.c
> > index d2c7a87aab87..c4d15f99f853 100644
> > --- a/drivers/soc/mediatek/mtk-mmsys.c
> > +++ b/drivers/soc/mediatek/mtk-mmsys.c
> > @@ -149,11 +149,25 @@ static const struct mtk_mmsys_driver_data
> > mt8195_vdosys1_driver_data = {
> >   	.clk_driver = "clk-mt8195-vdo1",
> >   };
> >   
> > +static const struct mtk_mmsys_driver_data
> > mt8195_vppsys0_driver_data = {
> > +	.io_start = 0x14000000,
> > +	.clk_driver = "clk-mt8195-vpp0",
> > +	.is_copies = true,
> > +};
> > +
> > +static const struct mtk_mmsys_driver_data
> > mt8195_vppsys1_driver_data = {
> > +	.io_start = 0x14f00000,
> > +	.clk_driver = "clk-mt8195-vpp1",
> > +	.is_copies = true,
> > +};
> > +
> >   static const struct mtk_mmsys_match_data mt8195_mmsys_match_data
> > = {
> > -	.num_drv_data = 2,
> > +	.num_drv_data = 4,
> 
> After a long discussion, it was chosen to not use the io_start way,
> but to change
> the devicetree compatible....
> 
> Check this series, and rebase on top of it:
> 
https://urldefense.com/v3/__https://patchwork.kernel.org/project/linux-mediatek/list/?series=681097__;!!CTRNKA9wMg0ARbw!3qjICTDNn82OJyHA0U_WAuEnMSy1mL31r14l72jY5rSrBaJN0_tDU_08BBZcEm6V$
>  
> 
> Cheers,
> Angelo
> 

Sorry for not noticing the change here, I'll rebase on it and fix
accordingly.

> >   	.drv_data = {
> >   		&mt8195_vdosys0_driver_data,
> >   		&mt8195_vdosys1_driver_data,
> > +		&mt8195_vppsys0_driver_data,
> > +		&mt8195_vppsys1_driver_data,
> >   	},
> >   };
> >   
> > @@ -360,6 +374,9 @@ static int mtk_mmsys_probe(struct
> > platform_device *pdev)
> >   	if (IS_ERR(clks))
> >   		return PTR_ERR(clks);
> >   
> > +	if (mmsys->data->is_copies)
> 
> I don't get what "is_copies" means, sorry. I'm sure that there's a
> better name
> for this one.
> 

It's a flag to avoid probing the DRM driver multiple times.
Would it be more readable if the name was changed to "is_vppsys"?

> > +		goto out_probe_done;
> > +
> >   	drm = platform_device_register_data(&pdev->dev, "mediatek-drm",
> >   					    PLATFORM_DEVID_AUTO, NULL,
> > 0);
> >   	if (IS_ERR(drm)) {
> 
> Regards,
> Angelo
> 

Thanks and Regards,
Moudy


_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel