Add bb_miiphy_bus function for designware bitbang feature.
Signed-off-by: Jim Liu <jjl...@nuvoton.com>
---
drivers/net/designware.c | 109 ++++++++++++++++++++++++++++++++++++++-
drivers/net/designware.h | 3 ++
2 files changed, 111 insertions(+), 1 deletion(-)
diff --git a/drivers/net/designware.c b/drivers/net/designware.c
index e09ca3313d..c539afc620 100644
--- a/drivers/net/designware.c
+++ b/drivers/net/designware.c
@@ -757,6 +757,32 @@ int designware_eth_probe(struct udevice *dev)
}
priv->bus = miiphy_get_dev_by_name(dev->name);
+#if defined(CONFIG_BITBANGMII) && defined(CONFIG_DM_GPIO)
+ if (dev_read_bool(dev, "snps,bitbang-mii")) {
+ printf("\n%s: use bitbang mii..\n", dev->name);
+ ret = gpio_request_by_name(dev, "snps,mdc-gpio", 0,
+ &priv->mdc_gpio, GPIOD_IS_OUT);
+ if (ret) {
+ printf("no mdc-gpio\n");
+ return ret;
+ }
+
+ ret = gpio_request_by_name(dev, "snps,mdio-gpio", 0,
+ &priv->mdio_gpio, GPIOD_IS_OUT);
+
+ if (ret) {
+ printf("no mdio-gpio\n");
+ return ret;
+ }
+ dm_gpio_set_value(&priv->mdc_gpio, 1);
+ bb_miiphy_buses[0].priv = priv;
+ sprintf(bb_miiphy_buses[0].name, dev->name);
+ priv->bus->read = bb_miiphy_read;
+ priv->bus->write = bb_miiphy_write;
+ priv->bus->reset = NULL;
+ }
+#endif
+
ret = dw_phy_init(priv, dev);
debug("%s, ret=%d\n", __func__, ret);
if (!ret)
@@ -826,7 +852,7 @@ int designware_eth_of_to_plat(struct udevice *dev)
reset_flags |= GPIOD_ACTIVE_LOW;
ret = gpio_request_by_name(dev, "snps,reset-gpio", 0,
- &priv->reset_gpio, reset_flags);
+ &priv->reset_gpio, reset_flags);
if (ret == 0) {
ret = dev_read_u32_array(dev, "snps,reset-delays-us",
dw_pdata->reset_delays, 3);
@@ -866,3 +892,84 @@ static struct pci_device_id supported[] = {
};
U_BOOT_PCI_DEVICE(eth_designware, supported);
+
+#if defined(CONFIG_BITBANGMII) && CONFIG_IS_ENABLED(DM_GPIO)
+int dw_eth_bb_init(struct bb_miiphy_bus *bus)
+{
+ return 0;
+}
+
+static int dw_eth_bb_mdio_active(struct bb_miiphy_bus *bus)
+{
+ struct dw_eth_dev *priv = bus->priv;
+ struct gpio_desc *desc = &priv->mdio_gpio;
+ desc->flags = 0;
+ dm_gpio_set_dir_flags(&priv->mdio_gpio, GPIOD_IS_OUT);
+
+ return 0;
+}
+
+static int dw_eth_bb_mdio_tristate(struct bb_miiphy_bus *bus)
+{
+ struct dw_eth_dev *priv = bus->priv;
+ struct gpio_desc *desc = &priv->mdio_gpio;
+ desc->flags = 0;
+ dm_gpio_set_dir_flags(&priv->mdio_gpio, GPIOD_IS_IN);
+
+ return 0;
+}
+
+static int dw_eth_bb_set_mdio(struct bb_miiphy_bus *bus, int v)
+{
+ struct dw_eth_dev *priv = bus->priv;
+
+ if (v)
+ dm_gpio_set_value(&priv->mdio_gpio, 1);
+ else
+ dm_gpio_set_value(&priv->mdio_gpio, 0);
+
+ return 0;
+}
+
+static int dw_eth_bb_get_mdio(struct bb_miiphy_bus *bus, int *v)
+{
+ struct dw_eth_dev *priv = bus->priv;
+
+ *v = dm_gpio_get_value(&priv->mdio_gpio);
+ return 0;
+}
+
+static int dw_eth_bb_set_mdc(struct bb_miiphy_bus *bus, int v)
+{
+ struct dw_eth_dev *priv = bus->priv;
+
+ if (v)
+ dm_gpio_set_value(&priv->mdc_gpio, 1);
+ else
+ dm_gpio_set_value(&priv->mdc_gpio, 0);
+
+ return 0;
+}
+
+static int dw_eth_bb_delay(struct bb_miiphy_bus *bus)
+{
+ udelay(1);
+
+ return 0;
+}
+
+struct bb_miiphy_bus bb_miiphy_buses[] = {
+ {
+ .name = "dw_eth_bb",
+ .init = dw_eth_bb_init,
+ .mdio_active = dw_eth_bb_mdio_active,
+ .mdio_tristate = dw_eth_bb_mdio_tristate,
+ .set_mdio = dw_eth_bb_set_mdio,
+ .get_mdio = dw_eth_bb_get_mdio,
+ .set_mdc = dw_eth_bb_set_mdc,
+ .delay = dw_eth_bb_delay,
+ }
+};
+
+int bb_miiphy_buses_num = ARRAY_SIZE(bb_miiphy_buses);
+#endif
diff --git a/drivers/net/designware.h b/drivers/net/designware.h
index 9da4e902cb..68ca5d9cd0 100644
--- a/drivers/net/designware.h
+++ b/drivers/net/designware.h
@@ -235,6 +235,9 @@ struct dw_eth_dev {
struct eth_dma_regs *dma_regs_p;
#if CONFIG_IS_ENABLED(DM_GPIO)
struct gpio_desc reset_gpio;
+ struct gpio_desc mdc_gpio;
+ struct gpio_desc mdio_gpio;
+ int mdio_val;
#endif
#ifdef CONFIG_CLK
struct clk *clocks; /* clock list */
--
2.17.1
