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realtek: mdio: provide individual bus probing function

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rtmdio_probe() is a do-it-all setup function. It creates one
control structure and one bus. In the future multiple busses
will be created. As a preparation carve out the bus specific
part into an individual probing function.

Signed-off-by: Markus Stockhausen <markus.stockhausen@gmx.de>
Link: https://github.com/openwrt/openwrt/pull/22604
Signed-off-by: Robert Marko <robimarko@gmail.com>
This commit is contained in:
Markus Stockhausen 2026-03-25 16:04:59 +01:00 committed by Robert Marko
parent 6069fe9ae1
commit 82d98592a6
1 changed files with 34 additions and 22 deletions
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56
target/linux/realtek/files-6.12/drivers/net/mdio/mdio-realtek-otto.c
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@ -908,32 +908,12 @@ static int rtmdio_map_ports(struct device *dev)
return 0;
}
static int rtmdio_probe(struct platform_device *pdev)
static int rtmdio_probe_one(struct device *dev, struct rtmdio_ctrl *ctrl)
{
struct device *dev = &pdev->dev;
struct rtmdio_ctrl *ctrl;
struct rtmdio_chan *chan;
struct mii_bus *bus;
int ret, addr;
ctrl = devm_kzalloc(dev, sizeof(*ctrl), GFP_KERNEL);
if (!ctrl)
return -ENOMEM;
platform_set_drvdata(pdev, ctrl);
ctrl->cfg = (const struct rtmdio_config *)device_get_match_data(dev);
ctrl->map = syscon_node_to_regmap(pdev->dev.of_node->parent);
if (IS_ERR(ctrl->map))
return PTR_ERR(ctrl->map);
ret = rtmdio_map_ports(dev);
if (ret) {
for_each_phy(ctrl, addr)
of_node_put(ctrl->port[addr].dn);
return ret;
}
rtmdio_setup_smi_topology(ctrl);
bus = devm_mdiobus_alloc_size(dev, sizeof(*chan));
if (!bus)
return -ENOMEM;
@ -954,7 +934,7 @@ static int rtmdio_probe(struct platform_device *pdev)
ret = devm_mdiobus_register(dev, bus);
if (ret)
return ret;
return dev_err_probe(dev, ret, "cannot register MDIO bus\n");
for_each_phy(ctrl, addr) {
if (!ret)
@ -965,12 +945,44 @@ static int rtmdio_probe(struct platform_device *pdev)
if (ret)
return ret;
/*
* TODO: This polling setup needs to be relocated into rtmdio_probe(). It is a generic
* function and not bus specific. But this will require more rework of the data
* structures. For now it is easier to hand over the single bus that was just created.
*/
if (ctrl->cfg->setup_polling)
ctrl->cfg->setup_polling(bus);
return 0;
}
static int rtmdio_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct rtmdio_ctrl *ctrl;
int ret, addr;
ctrl = devm_kzalloc(dev, sizeof(*ctrl), GFP_KERNEL);
if (!ctrl)
return -ENOMEM;
platform_set_drvdata(pdev, ctrl);
ctrl->cfg = (const struct rtmdio_config *)device_get_match_data(dev);
ctrl->map = syscon_node_to_regmap(pdev->dev.of_node->parent);
if (IS_ERR(ctrl->map))
return PTR_ERR(ctrl->map);
ret = rtmdio_map_ports(dev);
if (ret) {
for_each_phy(ctrl, addr)
of_node_put(ctrl->port[addr].dn);
return ret;
}
rtmdio_setup_smi_topology(ctrl);
return rtmdio_probe_one(dev, ctrl);
}
static const struct rtmdio_config rtmdio_838x_cfg = {
.num_phys = 28,
.raw_page = 4095,