From: Florian Fainelli <f.fainelli@gmail.com>
To: Grant Likely <grant.likely@arm.com>,
Calvin Johnson <calvin.johnson@oss.nxp.com>,
"Rafael J . Wysocki" <rafael@kernel.org>,
Jeremy Linton <jeremy.linton@arm.com>,
Andrew Lunn <andrew@lunn.ch>,
Andy Shevchenko <andy.shevchenko@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>
Cc: linux-kernel@vger.kernel.org, linux.cj@gmail.com,
netdev@vger.kernel.org, linux-acpi@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
Diana Madalina Craciun <diana.craciun@nxp.com>,
Laurentiu Tudor <laurentiu.tudor@nxp.com>,
"David S. Miller" <davem@davemloft.net>,
Heiner Kallweit <hkallweit1@gmail.com>,
Jakub Kicinski <kuba@kernel.org>, nd <nd@arm.com>
Subject: Re: [net-next PATCH v1 3/7] net: phy: Introduce fwnode_get_phy_id()
Date: Fri, 2 Oct 2020 08:14:07 -0700 [thread overview]
Message-ID: <679fab8f-d33a-9ce8-1982-788d5f90185e@gmail.com> (raw)
In-Reply-To: <11e6b553-675f-8f3d-f9d5-316dae381457@arm.com>
On 10/2/2020 4:05 AM, Grant Likely wrote:
>
>
> On 30/09/2020 17:04, Calvin Johnson wrote:
>> Extract phy_id from compatible string. This will be used by
>> fwnode_mdiobus_register_phy() to create phy device using the
>> phy_id.
>>
>> Signed-off-by: Calvin Johnson <calvin.johnson@oss.nxp.com>
>> ---
>>
>> drivers/net/phy/phy_device.c | 32 +++++++++++++++++++++++++++++++-
>> include/linux/phy.h | 5 +++++
>> 2 files changed, 36 insertions(+), 1 deletion(-)
>>
>> diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c
>> index c4aec56d0a95..162abde6223d 100644
>> --- a/drivers/net/phy/phy_device.c
>> +++ b/drivers/net/phy/phy_device.c
>> @@ -9,6 +9,7 @@
>> #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
>> +#include <linux/acpi.h>
>> #include <linux/bitmap.h>
>> #include <linux/delay.h>
>> #include <linux/errno.h>
>> @@ -845,6 +846,27 @@ static int get_phy_c22_id(struct mii_bus *bus,
>> int addr, u32 *phy_id)
>> return 0;
>> }
>> +/* Extract the phy ID from the compatible string of the form
>> + * ethernet-phy-idAAAA.BBBB.
>> + */
>> +int fwnode_get_phy_id(struct fwnode_handle *fwnode, u32 *phy_id)
>> +{
>> + unsigned int upper, lower;
>> + const char *cp;
>> + int ret;
>> +
>> + ret = fwnode_property_read_string(fwnode, "compatible", &cp);
>> + if (ret)
>> + return ret;
>> +
>> + if (sscanf(cp, "ethernet-phy-id%4x.%4x", &upper, &lower) == 2) {
>> + *phy_id = ((upper & 0xFFFF) << 16) | (lower & 0xFFFF);
>> + return 0;
>> + }
>> + return -EINVAL;
>> +}
>> +EXPORT_SYMBOL(fwnode_get_phy_id);
>
> This block, and the changes in patch 4 duplicate functions from
> drivers/of/of_mdio.c, but it doesn't refactor anything in
> drivers/of/of_mdio.c to use the new path. Is your intent to bring all of
> the parsing in these functions of "compatible" into the ACPI code path?
>
> If so, then the existing code path needs to be refactored to work with
> fwnode_handle instead of device_node.
>
> If not, then the DT path in these functions should call out to of_mdio,
> while the ACPI path only does what is necessary.
Rob has been asking before to have drivers/of/of_mdio.c be merged or at
least relocated within drivers/net/phy where it would naturally belong.
As a preliminary step towards ACPI support that would seem reasonable to do.
Then, as Grant suggests you can start re-factoring as much as possible
with using fwnode_handle.
--
Florian
next prev parent reply other threads:[~2020-10-02 15:14 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-30 16:04 [net-next PATCH v1 0/7] ACPI support for dpaa2 driver Calvin Johnson
2020-09-30 16:04 ` [net-next PATCH v1 1/7] Documentation: ACPI: DSD: Document MDIO PHY Calvin Johnson
2020-09-30 16:37 ` Rafael J. Wysocki
2020-10-01 13:26 ` Calvin Johnson
2020-10-02 11:08 ` Grant Likely
2020-10-02 14:13 ` Rafael J. Wysocki
2020-09-30 16:04 ` [net-next PATCH v1 2/7] net: phy: Introduce phy related fwnode functions Calvin Johnson
2020-09-30 22:03 ` David Miller
2020-10-01 3:58 ` Calvin Johnson
2020-09-30 16:04 ` [net-next PATCH v1 3/7] net: phy: Introduce fwnode_get_phy_id() Calvin Johnson
2020-09-30 16:34 ` Andrew Lunn
2020-09-30 18:07 ` Russell King - ARM Linux admin
2020-09-30 18:19 ` Andrew Lunn
2020-10-01 4:00 ` Calvin Johnson
2020-10-02 10:48 ` Grant Likely
2020-10-02 11:05 ` Grant Likely
2020-10-02 15:14 ` Florian Fainelli [this message]
2020-10-02 15:50 ` Russell King - ARM Linux admin
2020-10-03 18:03 ` Calvin Johnson
2020-10-03 18:00 ` Calvin Johnson
2020-09-30 16:04 ` [net-next PATCH v1 4/7] net: mdiobus: Introduce fwnode_mdiobus_register_phy() Calvin Johnson
2020-09-30 22:04 ` David Miller
2020-09-30 16:04 ` [net-next PATCH v1 5/7] phylink: introduce phylink_fwnode_phy_connect() Calvin Johnson
2020-09-30 16:04 ` [net-next PATCH v1 6/7] net: dpaa2-mac: Add ACPI support for DPAA2 MAC driver Calvin Johnson
2020-10-01 15:36 ` Andy Shevchenko
2020-10-03 16:30 ` Calvin Johnson
2020-10-02 11:22 ` Grant Likely
2020-10-03 17:39 ` Calvin Johnson
2020-10-07 15:50 ` Calvin Johnson
2020-09-30 16:04 ` [net-next PATCH v1 7/7] net/fsl: Use _ADR ACPI object to register PHYs Calvin Johnson
2020-09-30 16:27 ` Andrew Lunn
2020-09-30 22:04 ` David Miller
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