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Subject[PATCH net-next v9 12/15] net/fsl: Use [acpi|of]_mdiobus_register
Date
From: Calvin Johnson <calvin.johnson@oss.nxp.com>

Depending on the device node type, call the specific OF or ACPI
mdiobus_register function.

Note: For both ACPI and DT cases, endianness of MDIO controllers
need to be specified using the "little-endian" property.

Signed-off-by: Calvin Johnson <calvin.johnson@oss.nxp.com>
Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Acked-by: Grant Likely <grant.likely@arm.com>
---

Changes in v9: none
Changes in v8:
- Directly call the OF or ACPI variants of registering the MDIO bus.
This is needed because the fwnode_mdio.c module should only implement
features which can be achieved without going back to the OF/ACPI
variants. Without this restrictions we directly end up in a dependency
cycle: of_mdio -> fwnode_mdio -> of_mdio.
- Changed the commit title since the fwnode_mdiobus_register() is no
longer available

Changes in v7:
- Include fwnode_mdio.h
- Alphabetically sort header inclusions

Changes in v6: None
Changes in v5: None
Changes in v4:
- Cleanup xgmac_mdio_probe()

Changes in v3:
- Avoid unnecessary line removal
- Remove unused inclusion of acpi.h

Changes in v2: None



drivers/net/ethernet/freescale/xgmac_mdio.c | 30 ++++++++++++++-------
1 file changed, 21 insertions(+), 9 deletions(-)

diff --git a/drivers/net/ethernet/freescale/xgmac_mdio.c b/drivers/net/ethernet/freescale/xgmac_mdio.c
index bfa2826c5545..0b68852379da 100644
--- a/drivers/net/ethernet/freescale/xgmac_mdio.c
+++ b/drivers/net/ethernet/freescale/xgmac_mdio.c
@@ -2,6 +2,7 @@
* QorIQ 10G MDIO Controller
*
* Copyright 2012 Freescale Semiconductor, Inc.
+ * Copyright 2021 NXP
*
* Authors: Andy Fleming <afleming@freescale.com>
* Timur Tabi <timur@freescale.com>
@@ -11,15 +12,17 @@
* kind, whether express or implied.
*/

-#include <linux/kernel.h>
-#include <linux/slab.h>
+#include <linux/acpi.h>
+#include <linux/acpi_mdio.h>
#include <linux/interrupt.h>
-#include <linux/module.h>
-#include <linux/phy.h>
+#include <linux/kernel.h>
#include <linux/mdio.h>
+#include <linux/module.h>
#include <linux/of_address.h>
-#include <linux/of_platform.h>
#include <linux/of_mdio.h>
+#include <linux/of_platform.h>
+#include <linux/phy.h>
+#include <linux/slab.h>

/* Number of microseconds to wait for a register to respond */
#define TIMEOUT 1000
@@ -243,10 +246,10 @@ static int xgmac_mdio_read(struct mii_bus *bus, int phy_id, int regnum)

static int xgmac_mdio_probe(struct platform_device *pdev)
{
- struct device_node *np = pdev->dev.of_node;
- struct mii_bus *bus;
- struct resource *res;
+ struct fwnode_handle *fwnode;
struct mdio_fsl_priv *priv;
+ struct resource *res;
+ struct mii_bus *bus;
int ret;

/* In DPAA-1, MDIO is one of the many FMan sub-devices. The FMan
@@ -279,13 +282,22 @@ static int xgmac_mdio_probe(struct platform_device *pdev)
goto err_ioremap;
}

+ /* For both ACPI and DT cases, endianness of MDIO controller
+ * needs to be specified using "little-endian" property.
+ */
priv->is_little_endian = device_property_read_bool(&pdev->dev,
"little-endian");

priv->has_a011043 = device_property_read_bool(&pdev->dev,
"fsl,erratum-a011043");

- ret = of_mdiobus_register(bus, np);
+ fwnode = pdev->dev.fwnode;
+ if (is_of_node(fwnode))
+ ret = of_mdiobus_register(bus, to_of_node(fwnode));
+ else if (is_acpi_node(fwnode))
+ ret = acpi_mdiobus_register(bus, fwnode);
+ else
+ ret = -EINVAL;
if (ret) {
dev_err(&pdev->dev, "cannot register MDIO bus\n");
goto err_registration;
--
2.31.1
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