[PATCH 09/14] net: ravb: Support up to two instances

[Paul Barker]

Several Renesas SoCs in the RZ/G2L family have two Ethernet interfaces.
To support this second interface, we extend the bb_miiphy_buses[] array
and keep track of the current bus index in ravb_of_to_plat().

Support for an arbitrary number of instances is not implemented - it is
expected that bb_miiphy_buses will be replaced with a proper device
model/uclass implementation before that is needed.

Signed-off-by: Paul Barker <paul.barker...@bp.renesas.com>
---
 drivers/net/ravb.c | 28 ++++++++++++++++++++++++----
 1 file changed, 24 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ravb.c b/drivers/net/ravb.c
index f1401d2f6ed2..9b33ce929618 100644
--- a/drivers/net/ravb.c
+++ b/drivers/net/ravb.c
@@ -11,6 +11,7 @@
 #include <clk.h>
 #include <cpu_func.h>
 #include <dm.h>
+#include <dm/device_compat.h>
 #include <errno.h>
 #include <log.h>
 #include <miiphy.h>
@@ -494,6 +495,7 @@ static int ravb_probe(struct udevice *dev)
 {
        struct eth_pdata *pdata = dev_get_plat(dev);
        struct ravb_priv *eth = dev_get_priv(dev);
+       struct bb_miiphy_bus *phybus;
        struct mii_dev *mdiodev;
        void __iomem *iobase;
        int ret;
@@ -513,7 +515,8 @@ static int ravb_probe(struct udevice *dev)
 
        mdiodev->read = bb_miiphy_read;
        mdiodev->write = bb_miiphy_write;
-       bb_miiphy_buses[0].priv = eth;
+       phybus = (struct bb_miiphy_bus *)pdata->priv_pdata;
+       phybus->priv = eth;
        snprintf(mdiodev->name, sizeof(mdiodev->name), dev->name);
 
        ret = mdio_register(mdiodev);
@@ -625,7 +628,17 @@ int ravb_bb_delay(struct bb_miiphy_bus *bus)
 
 struct bb_miiphy_bus bb_miiphy_buses[] = {
        {
-               .name           = "ravb",
+               .name           = "ravb0",
+               .init           = ravb_bb_init,
+               .mdio_active    = ravb_bb_mdio_active,
+               .mdio_tristate  = ravb_bb_mdio_tristate,
+               .set_mdio       = ravb_bb_set_mdio,
+               .get_mdio       = ravb_bb_get_mdio,
+               .set_mdc        = ravb_bb_set_mdc,
+               .delay          = ravb_bb_delay,
+       },
+       {
+               .name           = "ravb1",
                .init           = ravb_bb_init,
                .mdio_active    = ravb_bb_mdio_active,
                .mdio_tristate  = ravb_bb_mdio_tristate,
@@ -646,10 +659,16 @@ static const struct eth_ops ravb_ops = {
        .write_hwaddr           = ravb_write_hwaddr,
 };
 
+static int bb_miiphy_index;
+
 int ravb_of_to_plat(struct udevice *dev)
 {
        struct eth_pdata *pdata = dev_get_plat(dev);
-       const fdt32_t *cell;
+
+       if (bb_miiphy_index >= bb_miiphy_buses_num) {
+               dev_err(dev, "ravb driver supports only 1 or 2 devices!\n");
+               return -EOVERFLOW;
+       }
 
        pdata->iobase = dev_read_addr(dev);
 
@@ -662,7 +681,8 @@ int ravb_of_to_plat(struct udevice *dev)
        if (cell)
                pdata->max_speed = fdt32_to_cpu(*cell);
 
-       sprintf(bb_miiphy_buses[0].name, dev->name);
+       pdata->priv_pdata = &bb_miiphy_buses[bb_miiphy_index];
+       sprintf(bb_miiphy_buses[bb_miiphy_index++].name, dev->name);
 
        return 0;
 }
-- 
2.43.0