static int ehci_usb_probe(struct udevice *dev)
{
struct generic_ehci *priv = dev_get_priv(dev);
struct ehci_hccr *hccr;
struct ehci_hcor *hcor;
int i, err, ret, clock_nb, reset_nb;
err = 0;
priv->clock_count = 0;
clock_nb = ofnode_count_phandle_with_args(dev_ofnode(dev), "clocks",
"#clock-cells");
if (clock_nb > 0) {
priv->clocks = devm_kcalloc(dev, clock_nb, sizeof(struct clk),
GFP_KERNEL);
if (!priv->clocks)
return -ENOMEM;
for (i = 0; i < clock_nb; i++) {
err = clk_get_by_index(dev, i, &priv->clocks[i]);
if (err < 0)
break;
err = clk_enable(&priv->clocks[i]);
if (err) {
pr_err("failed to enable clock %d\n", i);
clk_free(&priv->clocks[i]);
goto clk_err;
}
priv->clock_count++;
}
} else {
if (clock_nb != -ENOENT) {
pr_err("failed to get clock phandle(%d)\n", clock_nb);
return clock_nb;
}
}
priv->reset_count = 0;
reset_nb = ofnode_count_phandle_with_args(dev_ofnode(dev), "resets",
"#reset-cells");
if (reset_nb > 0) {
priv->resets = devm_kcalloc(dev, reset_nb,
sizeof(struct reset_ctl),
GFP_KERNEL);
if (!priv->resets)
return -ENOMEM;
for (i = 0; i < reset_nb; i++) {
err = reset_get_by_index(dev, i, &priv->resets[i]);
if (err < 0)
break;
if (reset_deassert(&priv->resets[i])) {
pr_err("failed to deassert reset %d\n", i);
reset_free(&priv->resets[i]);
goto reset_err;
}
priv->reset_count++;
}
} else {
if (reset_nb != -ENOENT) {
pr_err("failed to get reset phandle(%d)\n", reset_nb);
goto clk_err;
}
}
err = generic_phy_get_by_index(dev, 0, &priv->phy);
if (err) {
if (err != -ENOENT) {
pr_err("failed to get usb phy\n");
goto reset_err;
}
} else {
err = generic_phy_init(&priv->phy);
if (err) {
pr_err("failed to init usb phy\n");
goto reset_err;
}
}
hccr = map_physmem(dev_read_addr(dev), 0x100, MAP_NOCACHE);
hcor = (struct ehci_hcor *)((uintptr_t)hccr +
HC_LENGTH(ehci_readl(&hccr->cr_capbase)));
err = ehci_register(dev, hccr, hcor, NULL, 0, USB_INIT_HOST);
if (err)
goto phy_err;
return 0;
phy_err:
if (generic_phy_valid(&priv->phy)) {
ret = generic_phy_exit(&priv->phy);
if (ret)
pr_err("failed to release phy\n");
}
reset_err:
ret = reset_release_all(priv->resets, priv->reset_count);
if (ret)
pr_err("failed to assert all resets\n");
clk_err:
ret = clk_release_all(priv->clocks, priv->clock_count);
if (ret)
pr_err("failed to disable all clocks\n");
return err;
}
int dev_count_phandle_with_args(struct udevice *dev, const char *list_name,
const char *cells_name)
{
return ofnode_count_phandle_with_args(dev_ofnode(dev), list_name,
cells_name);
}
