usb: dwc3: use the phy bulk API to get phys

Get a group of phys by the phy bulk API

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Signed-off-by: Frank Wunderlich <frank-w@public-files.de>
Reviewed-by: Weijie Gao <weijie.gao@mediatek.com>

drivers/usb/dwc3/core.c

@@ -838,87 +838,32 @@ MODULE_LICENSE("GPL v2");
 MODULE_DESCRIPTION("DesignWare USB3 DRD Controller Driver");
 
 #if CONFIG_IS_ENABLED(PHY) && CONFIG_IS_ENABLED(DM_USB)
-int dwc3_setup_phy(struct udevice *dev, struct phy **array, int *num_phys)
+int dwc3_setup_phy(struct udevice *dev, struct phy_bulk *phys)
 {
-	int i, ret, count;
+	int ret;
-	struct phy *usb_phys;
 
-	/* Return if no phy declared */
+	ret = generic_phy_get_bulk(dev, phys);
-	if (!dev_read_prop(dev, "phys", NULL))
+	if (ret)
-		return 0;
+		return ret;
-	count = dev_count_phandle_with_args(dev, "phys", "#phy-cells");
-	if (count <= 0)
-		return count;
 
-	usb_phys = devm_kcalloc(dev, count, sizeof(struct phy),
+	ret = generic_phy_init_bulk(phys);
-				GFP_KERNEL);
+	if (ret)
-	if (!usb_phys)
+		return ret;
-		return -ENOMEM;
 
-	for (i = 0; i < count; i++) {
+	ret = generic_phy_power_on_bulk(phys);
-		ret = generic_phy_get_by_index(dev, i, &usb_phys[i]);
+	if (ret)
-		if (ret && ret != -ENOENT) {
+		generic_phy_exit_bulk(phys);
-			pr_err("Failed to get USB PHY%d for %s\n",
-			       i, dev->name);
-			return ret;
-		}
-	}
-
-	for (i = 0; i < count; i++) {
-		ret = generic_phy_init(&usb_phys[i]);
-		if (ret) {
-			pr_err("Can't init USB PHY%d for %s\n",
-			       i, dev->name);
-			goto phys_init_err;
-		}
-	}
-
-	for (i = 0; i < count; i++) {
-		ret = generic_phy_power_on(&usb_phys[i]);
-		if (ret) {
-			pr_err("Can't power USB PHY%d for %s\n",
-			       i, dev->name);
-			goto phys_poweron_err;
-		}
-	}
-
-	*array = usb_phys;
-	*num_phys =  count;
-	return 0;
-
-phys_poweron_err:
-	for (i = count - 1; i >= 0; i--)
-		generic_phy_power_off(&usb_phys[i]);
-
-	for (i = 0; i < count; i++)
-		generic_phy_exit(&usb_phys[i]);
-
-	return ret;
-
-phys_init_err:
-	for (; i >= 0; i--)
-		generic_phy_exit(&usb_phys[i]);
 
 	return ret;
 }
 
-int dwc3_shutdown_phy(struct udevice *dev, struct phy *usb_phys, int num_phys)
+int dwc3_shutdown_phy(struct udevice *dev, struct phy_bulk *phys)
 {
-	int i, ret;
+	int ret;
 
-	for (i = 0; i < num_phys; i++) {
+	ret = generic_phy_power_off_bulk(phys);
-		if (!generic_phy_valid(&usb_phys[i]))
+	ret |= generic_phy_exit_bulk(phys);
-			continue;
+	return ret;
-
-		ret = generic_phy_power_off(&usb_phys[i]);
-		ret |= generic_phy_exit(&usb_phys[i]);
-		if (ret) {
-			pr_err("Can't shutdown USB PHY%d for %s\n",
-			       i, dev->name);
-		}
-	}
-
-	return 0;
 }
 #endif
 

drivers/usb/dwc3/dwc3-generic.c

@@ -33,8 +33,7 @@ struct dwc3_generic_plat {
 struct dwc3_generic_priv {
 	void *base;
 	struct dwc3 dwc3;
-	struct phy *phys;
+	struct phy_bulk phys;
-	int num_phys;
 };
 
 struct dwc3_generic_host_priv {
@@ -56,7 +55,7 @@ static int dwc3_generic_probe(struct udevice *dev,
 	dwc3_of_parse(dwc3);
 #endif
 
-	rc = dwc3_setup_phy(dev, &priv->phys, &priv->num_phys);
+	rc = dwc3_setup_phy(dev, &priv->phys);
 	if (rc)
 		return rc;
 
@@ -79,7 +78,7 @@ static int dwc3_generic_remove(struct udevice *dev,
 	struct dwc3 *dwc3 = &priv->dwc3;
 
 	dwc3_remove(dwc3);
-	dwc3_shutdown_phy(dev, priv->phys, priv->num_phys);
+	dwc3_shutdown_phy(dev, &priv->phys);
 	unmap_physmem(dwc3->regs, MAP_NOCACHE);
 
 	return 0;

drivers/usb/host/xhci-dwc3.c

@@ -19,8 +19,7 @@
 #include <linux/usb/otg.h>
 
 struct xhci_dwc3_platdata {
-	struct phy *usb_phys;
+	struct phy_bulk *usb_phys;
-	int num_phys;
 };
 
 void dwc3_set_mode(struct dwc3 *dwc3_reg, u32 mode)
@@ -125,7 +124,7 @@ static int xhci_dwc3_probe(struct udevice *dev)
 	hcor = (struct xhci_hcor *)((uintptr_t)hccr +
 			HC_LENGTH(xhci_readl(&(hccr)->cr_capbase)));
 
-	ret = dwc3_setup_phy(dev, &plat->usb_phys, &plat->num_phys);
+	ret = dwc3_setup_phy(dev, plat->usb_phys);
 	if (ret && (ret != -ENOTSUPP))
 		return ret;
 
@@ -168,7 +167,7 @@ static int xhci_dwc3_remove(struct udevice *dev)
 {
 	struct xhci_dwc3_platdata *plat = dev_get_platdata(dev);
 
-	dwc3_shutdown_phy(dev, plat->usb_phys, plat->num_phys);
+	dwc3_shutdown_phy(dev, plat->usb_phys);
 
 	return xhci_deregister(dev);
 }

include/dwc3-uboot.h

@@ -9,6 +9,7 @@
 #ifndef __DWC3_UBOOT_H_
 #define __DWC3_UBOOT_H_
 
+#include <generic-phy.h>
 #include <linux/usb/otg.h>
 #include <linux/usb/phy.h>
 
@@ -43,17 +44,15 @@ void dwc3_uboot_handle_interrupt(int index);
 
 struct phy;
 #if CONFIG_IS_ENABLED(PHY) && CONFIG_IS_ENABLED(DM_USB)
-int dwc3_setup_phy(struct udevice *dev, struct phy **array, int *num_phys);
+int dwc3_setup_phy(struct udevice *dev, struct phy_bulk *phys);
-int dwc3_shutdown_phy(struct udevice *dev, struct phy *usb_phys, int num_phys);
+int dwc3_shutdown_phy(struct udevice *dev, struct phy_bulk *phys);
 #else
-static inline int dwc3_setup_phy(struct udevice *dev, struct phy **array,
+static inline int dwc3_setup_phy(struct udevice *dev, struct phy_bulk *phys)
-				 int *num_phys)
 {
 	return -ENOTSUPP;
 }
 
-static inline int dwc3_shutdown_phy(struct udevice *dev, struct phy *usb_phys,
+static inline int dwc3_shutdown_phy(struct udevice *dev, struct phy_bulk *phys)
-				    int num_phys)
 {
 	return -ENOTSUPP;
 }