X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=drivers%2Fusb%2Fhost%2Fehci-generic.c;h=0926986d27372f653faa502beba9e8701668b798;hb=20f06a48332d8dec255e3e808c3c97bb3222c2fd;hp=4444988e36fcace0566c8d99529cabf6b4969f1c;hpb=05195b2cbe5e8bd6df164503a4da9c84a7fe066f;p=u-boot

diff --git a/drivers/usb/host/ehci-generic.c b/drivers/usb/host/ehci-generic.c
index 4444988e36..0926986d27 100644
--- a/drivers/usb/host/ehci-generic.c
+++ b/drivers/usb/host/ehci-generic.c
@@ -6,6 +6,9 @@
 
 #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"
@@ -17,36 +20,179 @@
  */
 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_setup_phy(struct udevice *dev, int index)
+{
+	struct generic_ehci *priv = dev_get_priv(dev);
+	int ret;
+
+	ret = generic_phy_get_by_index(dev, index, &priv->phy);
+	if (ret) {
+		if (ret != -ENOENT) {
+			dev_err(dev, "failed to get usb phy\n");
+			return ret;
+		}
+	} else {
+		ret = generic_phy_init(&priv->phy);
+		if (ret) {
+			dev_err(dev, "failed to init usb phy\n");
+			return ret;
+		}
+
+		ret = generic_phy_power_on(&priv->phy);
+		if (ret) {
+			dev_err(dev, "failed to power on usb phy\n");
+			return generic_phy_exit(&priv->phy);
+		}
+	}
+
+	return 0;
+}
+
+static int ehci_shutdown_phy(struct udevice *dev)
+{
+	struct generic_ehci *priv = dev_get_priv(dev);
+	int ret = 0;
+
+	if (generic_phy_valid(&priv->phy)) {
+		ret = generic_phy_power_off(&priv->phy);
+		if (ret) {
+			dev_err(dev, "failed to power off usb phy\n");
+			return ret;
+		}
+
+		ret = generic_phy_exit(&priv->phy);
+		if (ret) {
+			dev_err(dev, "failed to power off usb phy\n");
+			return ret;
+		}
+	}
+
+	return 0;
+}
+
 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 udevice *clk_dev;
-		int clk_id;
-
-		clk_id = clk_get_by_index(dev, i, &clk_dev);
-		if (clk_id < 0)
-			break;
-		if (clk_enable(clk_dev, clk_id))
-			printf("failed to enable clock (dev=%s, id=%d)\n",
-			       clk_dev->name, clk_id);
+	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;
+		}
 	}
 
-	hccr = map_physmem(dev_get_addr(dev), 0x100, MAP_NOCACHE);
+	err = ehci_setup_phy(dev, 0);
+	if (err)
+
+		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)));
 
-	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:
+	ret = ehci_shutdown_phy(dev);
+	if (ret)
+		dev_err(dev, "failed to shutdown usb 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;
 }
 
 static int ehci_usb_remove(struct udevice *dev)
 {
-	return ehci_deregister(dev);
+	struct generic_ehci *priv = dev_get_priv(dev);
+	int ret;
+
+	ret = ehci_deregister(dev);
+	if (ret)
+		return ret;
+
+	ret = ehci_shutdown_phy(dev);
+	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[] = {