#include <common.h>
#include <clk.h>
+#include <dm/ofnode.h>
+#include <generic-phy.h>
+#include <reset.h>
#include <asm/io.h>
#include <dm.h>
#include "ehci.h"
*/
struct generic_ehci {
struct ehci_ctrl ctrl;
+ struct clk *clocks;
+ struct reset_ctl *resets;
+ struct phy phy;
+ int clock_count;
+ int reset_count;
};
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;
-
- for (i = 0; ; i++) {
- struct clk clk;
- int ret;
-
- ret = clk_get_by_index(dev, i, &clk);
- if (ret < 0)
- break;
- if (clk_enable(&clk))
- printf("failed to enable clock %d\n", i);
- clk_free(&clk);
+ 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) {
+ error("failed to enable clock %d\n", i);
+ clk_free(&priv->clocks[i]);
+ goto clk_err;
+ }
+ priv->clock_count++;
+ }
+ } else {
+ if (clock_nb != -ENOENT) {
+ error("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])) {
+ error("failed to deassert reset %d\n", i);
+ reset_free(&priv->resets[i]);
+ goto reset_err;
+ }
+ priv->reset_count++;
+ }
+ } else {
+ if (reset_nb != -ENOENT) {
+ error("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) {
+ error("failed to get usb phy\n");
+ goto reset_err;
+ }
+ } else {
+
+ err = generic_phy_init(&priv->phy);
+ if (err) {
+ error("failed to init usb phy\n");
+ goto reset_err;
+ }
}
- hccr = map_physmem(dev_get_addr(dev), 0x100, MAP_NOCACHE);
+ hccr = map_physmem(devfdt_get_addr(dev), 0x100, MAP_NOCACHE);
hcor = (struct ehci_hcor *)((uintptr_t)hccr +
HC_LENGTH(ehci_readl(&hccr->cr_capbase)));
- return ehci_register(dev, hccr, hcor, NULL, 0, USB_INIT_HOST);
+ 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)
+ error("failed to release phy\n");
+ }
+
+reset_err:
+ ret = reset_release_all(priv->resets, priv->reset_count);
+ if (ret)
+ error("failed to assert all resets\n");
+clk_err:
+ ret = clk_release_all(priv->clocks, priv->clock_count);
+ if (ret)
+ error("failed to disable all clocks\n");
+
+ return err;
+}
+
+static int ehci_usb_remove(struct udevice *dev)
+{
+ struct generic_ehci *priv = dev_get_priv(dev);
+ int ret;
+
+ ret = ehci_deregister(dev);
+ if (ret)
+ return ret;
+
+ if (generic_phy_valid(&priv->phy)) {
+ ret = generic_phy_exit(&priv->phy);
+ if (ret)
+ return ret;
+ }
+
+ ret = reset_release_all(priv->resets, priv->reset_count);
+ if (ret)
+ return ret;
+
+ return clk_release_all(priv->clocks, priv->clock_count);
}
static const struct udevice_id ehci_usb_ids[] = {
.id = UCLASS_USB,
.of_match = ehci_usb_ids,
.probe = ehci_usb_probe,
- .remove = ehci_deregister,
+ .remove = ehci_usb_remove,
.ops = &ehci_usb_ops,
.priv_auto_alloc_size = sizeof(struct generic_ehci),
.flags = DM_FLAG_ALLOC_PRIV_DMA,