From: Calvin Johnson <calvin.johnson@oss.nxp.com>
To: Andy Shevchenko <andy.shevchenko@gmail.com>
Cc: Grant Likely <grant.likely@arm.com>,
"Rafael J . Wysocki" <rafael@kernel.org>,
Jeremy Linton <jeremy.linton@arm.com>,
Andrew Lunn <andrew@lunn.ch>,
Florian Fainelli <f.fainelli@gmail.com>,
Russell King - ARM Linux admin <linux@armlinux.org.uk>,
Cristi Sovaiala <cristian.sovaiala@nxp.com>,
Florin Laurentiu Chiculita <florinlaurentiu.chiculita@nxp.com>,
Ioana Ciornei <ioana.ciornei@nxp.com>,
Madalin Bucur <madalin.bucur@oss.nxp.com>,
Heikki Krogerus <heikki.krogerus@linux.intel.com>,
Marcin Wojtas <mw@semihalf.com>,
Pieter Jansen Van Vuuren <pieter.jansenvv@bamboosystems.io>,
Jon <jon@solid-run.com>, "linux.cj" <linux.cj@gmail.com>,
Laurentiu Tudor <laurentiu.tudor@nxp.com>,
Diana Madalina Craciun <diana.craciun@nxp.com>,
ACPI Devel Maling List <linux-acpi@vger.kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
linux-arm Mailing List <linux-arm-kernel@lists.infradead.org>,
netdev <netdev@vger.kernel.org>,
"David S. Miller" <davem@davemloft.net>,
Heiner Kallweit <hkallweit1@gmail.com>,
Jakub Kicinski <kuba@kernel.org>
Subject: Re: [net-next PATCH v2 08/14] net: mdiobus: Introduce fwnode_mdiobus_register()
Date: Fri, 18 Dec 2020 11:10:44 +0530 [thread overview]
Message-ID: <20201218054044.GB14594@lsv03152.swis.in-blr01.nxp.com> (raw)
In-Reply-To: <CAHp75Vf69NuxqcJntQi+CT1QN4cpdr2LYNzo6=t-pBWcWgufPA@mail.gmail.com>
On Tue, Dec 15, 2020 at 07:53:26PM +0200, Andy Shevchenko wrote:
> On Tue, Dec 15, 2020 at 6:44 PM Calvin Johnson
> <calvin.johnson@oss.nxp.com> wrote:
> >
> > Introduce fwnode_mdiobus_register() to register PHYs on the mdiobus.
> > If the fwnode is DT node, then call of_mdiobus_register().
> > If it is an ACPI node, then:
> > - disable auto probing of mdiobus
> > - register mdiobus
> > - save fwnode to mdio structure
> > - loop over child nodes & register a phy_device for each PHY
>
> ...
>
> > +/**
> > + * fwnode_mdiobus_register - Register mii_bus and create PHYs from fwnode
> > + * @mdio: pointer to mii_bus structure
> > + * @fwnode: pointer to fwnode of MDIO bus.
> > + *
> > + * This function registers the mii_bus structure and registers a phy_device
> > + * for each child node of @fwnode.
> > + */
> > +int fwnode_mdiobus_register(struct mii_bus *mdio, struct fwnode_handle *fwnode)
> > +{
> > + struct fwnode_handle *child;
> > + unsigned long long addr;
> > + acpi_status status;
> > + int ret;
> > +
> > + if (is_of_node(fwnode)) {
> > + return of_mdiobus_register(mdio, to_of_node(fwnode));
> > + } else if (is_acpi_node(fwnode)) {
>
> I would rather see this as simple as
>
> if (is_of_node(fwnode))
> return of_mdiobus_register(mdio, to_of_node(fwnode));
> if (is_acpi_node(fwnode))
> return acpi_mdiobus_register(mdio, fwnode);
>
> where the latter one is defined somewhere in drivers/acpi/.
Makes sense. I'll do it. But I think it will be better to place
acpi_mdiobus_register() here itself in the network subsystem, maybe
/drivers/net/mdio/acpi_mdio.c.
>
> > + /* Mask out all PHYs from auto probing. */
> > + mdio->phy_mask = ~0;
> > + ret = mdiobus_register(mdio);
> > + if (ret)
> > + return ret;
> > +
> > + mdio->dev.fwnode = fwnode;
> > + /* Loop over the child nodes and register a phy_device for each PHY */
> > + fwnode_for_each_child_node(fwnode, child) {
>
> > + status = acpi_evaluate_integer(ACPI_HANDLE_FWNODE(child),
> > + "_ADR", NULL, &addr);
> > + if (ACPI_FAILURE(status)) {
>
> Isn't it fwnode_get_id() now?
Yes. Will change it.
>
> > + pr_debug("_ADR returned %d\n", status);
> > + continue;
> > + }
>
> > + if (addr < 0 || addr >= PHY_MAX_ADDR)
> > + continue;
>
> addr can't be less than 0.
Yes. will update in v3.
>
> > + ret = fwnode_mdiobus_register_phy(mdio, child, addr);
> > + if (ret == -ENODEV)
> > + dev_err(&mdio->dev,
> > + "MDIO device at address %lld is missing.\n",
> > + addr);
> > + }
> > + return 0;
> > + }
> > + return -EINVAL;
> > +}
>
> --
> With Best Regards,
> Andy Shevchenko
next prev parent reply other threads:[~2020-12-18 5:42 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-12-15 16:43 [net-next PATCH v2 00/14] ACPI support for dpaa2 driver Calvin Johnson
2020-12-15 16:43 ` [net-next PATCH v2 01/14] Documentation: ACPI: DSD: Document MDIO PHY Calvin Johnson
2020-12-15 16:43 ` [net-next PATCH v2 02/14] net: phy: Introduce phy related fwnode functions Calvin Johnson
2020-12-15 17:23 ` Andy Shevchenko
2020-12-17 7:32 ` Calvin Johnson
2020-12-15 16:43 ` [net-next PATCH v2 03/14] of: mdio: Refactor of_phy_find_device() Calvin Johnson
2020-12-15 16:43 ` [net-next PATCH v2 04/14] net: phy: Introduce fwnode_get_phy_id() Calvin Johnson
2020-12-15 17:28 ` Andy Shevchenko
2020-12-17 8:28 ` Calvin Johnson
2020-12-17 9:44 ` Andy Shevchenko
2020-12-15 16:43 ` [net-next PATCH v2 05/14] of: mdio: Refactor of_get_phy_id() Calvin Johnson
2020-12-15 16:43 ` [net-next PATCH v2 06/14] net: mdiobus: Introduce fwnode_mdiobus_register_phy() Calvin Johnson
2020-12-15 17:33 ` Andy Shevchenko
2020-12-18 5:34 ` Calvin Johnson
2020-12-18 15:35 ` Andy Shevchenko
2020-12-15 16:43 ` [net-next PATCH v2 07/14] of: mdio: Refactor of_mdiobus_register_phy() Calvin Johnson
2020-12-15 16:43 ` [net-next PATCH v2 08/14] net: mdiobus: Introduce fwnode_mdiobus_register() Calvin Johnson
2020-12-15 17:53 ` Andy Shevchenko
2020-12-18 5:40 ` Calvin Johnson [this message]
2020-12-18 15:36 ` Andy Shevchenko
2020-12-15 16:43 ` [net-next PATCH v2 09/14] net/fsl: Use fwnode_mdiobus_register() Calvin Johnson
2020-12-15 17:55 ` Andy Shevchenko
2020-12-18 5:48 ` Calvin Johnson
2020-12-15 16:43 ` [net-next PATCH v2 10/14] device property: Introduce fwnode_get_id() Calvin Johnson
2020-12-15 17:00 ` Laurent Pinchart
2020-12-15 17:49 ` Andy Shevchenko
2020-12-18 6:09 ` Calvin Johnson
2020-12-15 17:45 ` Andy Shevchenko
2020-12-18 6:12 ` Calvin Johnson
2020-12-15 16:43 ` [net-next PATCH v2 11/14] phylink: introduce phylink_fwnode_phy_connect() Calvin Johnson
2020-12-15 16:43 ` [net-next PATCH v2 12/14] net: phylink: Refactor phylink_of_phy_connect() Calvin Johnson
2020-12-15 16:43 ` [net-next PATCH v2 13/14] net: phy: Introduce fwnode_mdio_find_device() Calvin Johnson
2020-12-15 16:43 ` [net-next PATCH v2 14/14] net: dpaa2-mac: Add ACPI support for DPAA2 MAC driver Calvin Johnson
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