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net: dsa: dsa_loop: remove usage of mdio_board_info

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dsa_loop is the last remaining user of mdio_board_info. Let's remove
using mdio_board_info, so that support for it can be dropped from
phylib.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Tested-by: Vladimir Oltean <olteanv@gmail.com>
Link: https://patch.msgid.link/da9563a4-8e14-41cf-bfea-cf5f1b58a4b7@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Heiner Kallweit 2025-09-13 23:07:08 +02:00 committed by Jakub Kicinski
parent 2479cba209
commit 41357bc7b9
4 changed files with 60 additions and 62 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

3
drivers/net/dsa/Makefile
View file

@ -2,9 +2,6 @@
obj-$(CONFIG_NET_DSA_BCM_SF2) += bcm-sf2.o
bcm-sf2-objs := bcm_sf2.o bcm_sf2_cfp.o
obj-$(CONFIG_NET_DSA_LOOP) += dsa_loop.o
ifdef CONFIG_NET_DSA_LOOP
obj-$(CONFIG_FIXED_PHY) += dsa_loop_bdinfo.o
endif
obj-$(CONFIG_NET_DSA_KS8995) += ks8995.o
obj-$(CONFIG_NET_DSA_MT7530) += mt7530.o
obj-$(CONFIG_NET_DSA_MT7530_MDIO) += mt7530-mdio.o

63
drivers/net/dsa/dsa_loop.c
View file

@ -17,7 +17,19 @@
#include <linux/dsa/loop.h>
#include <net/dsa.h>
#include "dsa_loop.h"
#define DSA_LOOP_NUM_PORTS 6
#define DSA_LOOP_CPU_PORT (DSA_LOOP_NUM_PORTS - 1)
#define NUM_FIXED_PHYS (DSA_LOOP_NUM_PORTS - 2)
struct dsa_loop_pdata {
/* Must be first, such that dsa_register_switch() can access this
* without gory pointer manipulations
*/
struct dsa_chip_data cd;
const char *name;
unsigned int enabled_ports;
const char *netdev;
};
static struct dsa_loop_mib_entry dsa_loop_mibs[] = {
[DSA_LOOP_PHY_READ_OK] = { "phy_read_ok", },
@ -27,6 +39,7 @@ static struct dsa_loop_mib_entry dsa_loop_mibs[] = {
};
static struct phy_device *phydevs[PHY_MAX_ADDR];
static struct mdio_device *switch_mdiodev;
enum dsa_loop_devlink_resource_id {
DSA_LOOP_DEVLINK_PARAM_ID_VTU,
@ -392,6 +405,42 @@ static void dsa_loop_phydevs_unregister(void)
}
}
static int __init dsa_loop_create_switch_mdiodev(void)
{
static struct dsa_loop_pdata dsa_loop_pdata = {
.cd = {
.port_names[0] = "lan1",
.port_names[1] = "lan2",
.port_names[2] = "lan3",
.port_names[3] = "lan4",
.port_names[DSA_LOOP_CPU_PORT] = "cpu",
},
.name = "DSA mockup driver",
.enabled_ports = 0x1f,
.netdev = "eth0",
};
struct mii_bus *bus;
int ret = -ENODEV;
bus = mdio_find_bus("fixed-0");
if (WARN_ON(!bus))
return ret;
switch_mdiodev = mdio_device_create(bus, 31);
if (IS_ERR(switch_mdiodev))
goto out;
strscpy(switch_mdiodev->modalias, "dsa-loop");
switch_mdiodev->dev.platform_data = &dsa_loop_pdata;
ret = mdio_device_register(switch_mdiodev);
if (ret)
mdio_device_free(switch_mdiodev);
out:
put_device(&bus->dev);
return ret;
}
static int __init dsa_loop_init(void)
{
struct fixed_phy_status status = {
@ -402,12 +451,19 @@ static int __init dsa_loop_init(void)
unsigned int i;
int ret;
ret = dsa_loop_create_switch_mdiodev();
if (ret)
return ret;
for (i = 0; i < NUM_FIXED_PHYS; i++)
phydevs[i] = fixed_phy_register(&status, NULL);
ret = mdio_driver_register(&dsa_loop_drv);
if (ret)
if (ret) {
dsa_loop_phydevs_unregister();
mdio_device_remove(switch_mdiodev);
mdio_device_free(switch_mdiodev);
}
return ret;
}
@ -417,10 +473,11 @@ static void __exit dsa_loop_exit(void)
{
mdio_driver_unregister(&dsa_loop_drv);
dsa_loop_phydevs_unregister();
mdio_device_remove(switch_mdiodev);
mdio_device_free(switch_mdiodev);
}
module_exit(dsa_loop_exit);
MODULE_SOFTDEP("pre: dsa_loop_bdinfo");
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Florian Fainelli");
MODULE_DESCRIPTION("DSA loopback driver");

20
drivers/net/dsa/dsa_loop.h
View file

@ -1,20 +0,0 @@
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __DSA_LOOP_H
#define __DSA_LOOP_H
struct dsa_chip_data;
struct dsa_loop_pdata {
/* Must be first, such that dsa_register_switch() can access this
* without gory pointer manipulations
*/
struct dsa_chip_data cd;
const char *name;
unsigned int enabled_ports;
const char *netdev;
};
#define DSA_LOOP_NUM_PORTS 6
#define DSA_LOOP_CPU_PORT (DSA_LOOP_NUM_PORTS - 1)
#endif /* __DSA_LOOP_H */

36
drivers/net/dsa/dsa_loop_bdinfo.c
View file

@ -1,36 +0,0 @@
// SPDX-License-Identifier: GPL-2.0-only
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/phy.h>
#include <net/dsa.h>
#include "dsa_loop.h"
static struct dsa_loop_pdata dsa_loop_pdata = {
.cd = {
.port_names[0] = "lan1",
.port_names[1] = "lan2",
.port_names[2] = "lan3",
.port_names[3] = "lan4",
.port_names[DSA_LOOP_CPU_PORT] = "cpu",
},
.name = "DSA mockup driver",
.enabled_ports = 0x1f,
.netdev = "eth0",
};
static const struct mdio_board_info bdinfo = {
.bus_id = "fixed-0",
.modalias = "dsa-loop",
.mdio_addr = 31,
.platform_data = &dsa_loop_pdata,
};
static int __init dsa_loop_bdinfo_init(void)
{
return mdiobus_register_board_info(&bdinfo, 1);
}
arch_initcall(dsa_loop_bdinfo_init)
MODULE_DESCRIPTION("DSA mock-up switch driver");
MODULE_LICENSE("GPL");