Messages in this thread | | | Date | Tue, 8 Jul 2014 17:40:10 -0400 | From | Tejun Heo <> | Subject | Re: [PATCH v9 3/7] ata: libahci: allow to use multiple PHYs |
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Hey,
On Tue, Jul 08, 2014 at 07:49:00PM +0200, Antoine Ténart wrote: > > So, yeah, it's being used both as input and output and we also have > > the arguments which affect port_map, right? It does seem confusing. > > I do see priv->port_map as being automatically set and then restricted > if needed by the port_map input here. I don't see how that's confusing. > The only modification is we restrict the port_map parameter to the set > of available ports. The port_map argument affected priv->port_map before > this patch.
It is confusing. If you wanna pass around available ports in hpriv, please add a separate field and replace the arguments to save_initial_config().
> > Well, so does clk. Let's say clk is more restricted and phy can be > > one or more per port and thus needs to be dynamic. If so, shouldn't > > we at least have some correlation between phys and ports? It bothers > > me that now libahci is carrying random number of resources that it has > > no idea how to associate with the ports it manages. What if later we > > want to involve phy driver in power managing unoccupied ports? > > I see. This is a first (working) attempt to have a one node per port. I > agree that would be nice to have a correlation between ports and PHYs. > This can definitively be added when needed without changing the dt > bindings as only the internal representation changes. This would also > require to get all phys from the port nodes, which is again internal > stuff. > > Don't you think we can go by steps, and have a following up series for > this when needed (like in a power managing series for unoccupied ports)?
I don't know. It isn't exactly difficult to make it per-port, is it? We already have ahci_port_priv and wouldn't the code actually be simpler that way?
Thanks.
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