Hi,
On Thu, Nov 16, 2023 at 06:39:40PM +0800, Andy Yan wrote:
> > > vop2->sys_grf = syscon_regmap_lookup_by_phandle(dev->of_node, "rockchip,grf");
> > This already lacks an error check, shame on me...
> >
> > > + vop2->vop_grf = syscon_regmap_lookup_by_phandle(dev->of_node, "rockchip,vop-grf");
> > > + vop2->vo1_grf = syscon_regmap_lookup_by_phandle(dev->of_node, "rockchip,vo1-grf");
> > > + vop2->sys_pmu = syscon_regmap_lookup_by_phandle(dev->of_node, "rockchip,pmu");
> > ... but please don't duplicate that.
>
> It a little difficult to find a proper way to do the check, as not every soc need all these phandles.
>
> Do i need check it per soc?
I suggest adding a u32 flags to struct vop2_data and then have
something like this:
if (vop2_data->flags & VOP2_HAS_VOP_GRF) {
vop2->vop_grf = syscon_regmap_lookup_by_phandle(dev->of_node, "rockchip,vop-grf");
if (IS_ERR(vop2->vop_grf))
return dev_err_probe(dev, PTR_ERR(vop2->vop_grf) "cannot get vop-grf");
}
if (vop2_data->flags & VOP2_HAS_VO1_GRF) {
vop2->vo1_grf = syscon_regmap_lookup_by_phandle(dev->of_node, "rockchip,vo1-grf");
if (IS_ERR(vop2->vo1_grf))
return dev_err_probe(dev, PTR_ERR(vop2->vo1_grf) "cannot get vo1-grf");
}
...
Greetings,
-- Sebastian
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