1 files changed, 77 insertions, 95 deletions

diff --git a/drivers/usb/host/ohci-platform.c b/drivers/usb/host/ohci-platform.c
index 61fe2b985070..2e4bb5cc2165 100644
--- a/drivers/usb/host/ohci-platform.c
+++ b/drivers/usb/host/ohci-platform.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Generic platform ohci driver
  *
@@ -11,8 +12,6 @@
  * Copyright 2000-2002 David Brownell
  * Copyright 1999 Linus Torvalds
  * Copyright 1999 Gregory P. Smith
- *
- * Licensed under the GNU/GPL. See COPYING for details.
  */
 
 #include <linux/clk.h>
@@ -22,35 +21,31 @@
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/err.h>
-#include <linux/phy/phy.h>
+#include <linux/of.h>
 #include <linux/platform_device.h>
 #include <linux/pm_runtime.h>
 #include <linux/reset.h>
 #include <linux/usb/ohci_pdriver.h>
 #include <linux/usb.h>
 #include <linux/usb/hcd.h>
+#include <linux/usb/of.h>
 
 #include "ohci.h"
 
 #define DRIVER_DESC "OHCI generic platform driver"
-#define OHCI_MAX_CLKS 3
-#define OHCI_MAX_RESETS 2
+#define OHCI_MAX_CLKS 4
 #define hcd_to_ohci_priv(h) ((struct ohci_platform_priv *)hcd_to_ohci(h)->priv)
 
 struct ohci_platform_priv {
 	struct clk *clks[OHCI_MAX_CLKS];
-	struct reset_control *resets[OHCI_MAX_RESETS];
-	struct phy **phys;
-	int num_phys;
+	struct reset_control *resets;
 };
 
-static const char hcd_name[] = "ohci-platform";
-
 static int ohci_platform_power_on(struct platform_device *dev)
 {
 	struct usb_hcd *hcd = platform_get_drvdata(dev);
 	struct ohci_platform_priv *priv = hcd_to_ohci_priv(hcd);
-	int clk, ret, phy_num;
+	int clk, ret;
 
 	for (clk = 0; clk < OHCI_MAX_CLKS && priv->clks[clk]; clk++) {
 		ret = clk_prepare_enable(priv->clks[clk]);
@@ -58,24 +53,8 @@ static int ohci_platform_power_on(struct platform_device *dev)
 			goto err_disable_clks;
 	}
 
-	for (phy_num = 0; phy_num < priv->num_phys; phy_num++) {
-		ret = phy_init(priv->phys[phy_num]);
-		if (ret)
-			goto err_exit_phy;
-		ret = phy_power_on(priv->phys[phy_num]);
-		if (ret) {
-			phy_exit(priv->phys[phy_num]);
-			goto err_exit_phy;
-		}
-	}
-
 	return 0;
 
-err_exit_phy:
-	while (--phy_num >= 0) {
-		phy_power_off(priv->phys[phy_num]);
-		phy_exit(priv->phys[phy_num]);
-	}
 err_disable_clks:
 	while (--clk >= 0)
 		clk_disable_unprepare(priv->clks[clk]);
@@ -87,16 +66,10 @@ static void ohci_platform_power_off(struct platform_device *dev)
 {
 	struct usb_hcd *hcd = platform_get_drvdata(dev);
 	struct ohci_platform_priv *priv = hcd_to_ohci_priv(hcd);
-	int clk, phy_num;
-
-	for (phy_num = 0; phy_num < priv->num_phys; phy_num++) {
-		phy_power_off(priv->phys[phy_num]);
-		phy_exit(priv->phys[phy_num]);
-	}
+	int clk;
 
 	for (clk = OHCI_MAX_CLKS - 1; clk >= 0; clk--)
-		if (priv->clks[clk])
-			clk_disable_unprepare(priv->clks[clk]);
+		clk_disable_unprepare(priv->clks[clk]);
 }
 
 static struct hc_driver __read_mostly ohci_platform_hc_driver;
@@ -119,7 +92,7 @@ static int ohci_platform_probe(struct platform_device *dev)
 	struct usb_ohci_pdata *pdata = dev_get_platdata(&dev->dev);
 	struct ohci_platform_priv *priv;
 	struct ohci_hcd *ohci;
-	int err, irq, phy_num, clk = 0, rst = 0;
+	int err, irq, clk = 0;
 
 	if (usb_disabled())
 		return -ENODEV;
@@ -136,10 +109,8 @@ static int ohci_platform_probe(struct platform_device *dev)
 		return err;
 
 	irq = platform_get_irq(dev, 0);
-	if (irq < 0) {
-		dev_err(&dev->dev, "no irq provided");
+	if (irq < 0)
 		return irq;
-	}
 
 	hcd = usb_create_hcd(&ohci_platform_hc_driver, &dev->dev,
 			dev_name(&dev->dev));
@@ -171,29 +142,6 @@ static int ohci_platform_probe(struct platform_device *dev)
 		of_property_read_u32(dev->dev.of_node, "num-ports",
 				     &ohci->num_ports);
 
-		priv->num_phys = of_count_phandle_with_args(dev->dev.of_node,
-				"phys", "#phy-cells");
-
-		if (priv->num_phys > 0) {
-			priv->phys = devm_kcalloc(&dev->dev, priv->num_phys,
-					    sizeof(struct phy *), GFP_KERNEL);
-			if (!priv->phys)
-				return -ENOMEM;
-		} else
-			priv->num_phys = 0;
-
-		for (phy_num = 0; phy_num < priv->num_phys; phy_num++) {
-			priv->phys[phy_num] = devm_of_phy_get_by_index(
-					&dev->dev, dev->dev.of_node, phy_num);
-			if (IS_ERR(priv->phys[phy_num])) {
-				err = PTR_ERR(priv->phys[phy_num]);
-				goto err_put_hcd;
-			} else if (!hcd->phy) {
-				/* Avoiding phy_get() in usb_add_hcd() */
-				hcd->phy = priv->phys[phy_num];
-			}
-		}
-
 		for (clk = 0; clk < OHCI_MAX_CLKS; clk++) {
 			priv->clks[clk] = of_clk_get(dev->dev.of_node, clk);
 			if (IS_ERR(priv->clks[clk])) {
@@ -204,21 +152,17 @@ static int ohci_platform_probe(struct platform_device *dev)
 				break;
 			}
 		}
-		for (rst = 0; rst < OHCI_MAX_RESETS; rst++) {
-			priv->resets[rst] =
-				devm_reset_control_get_shared_by_index(
-								&dev->dev, rst);
-			if (IS_ERR(priv->resets[rst])) {
-				err = PTR_ERR(priv->resets[rst]);
-				if (err == -EPROBE_DEFER)
-					goto err_reset;
-				priv->resets[rst] = NULL;
-				break;
-			}
-			err = reset_control_deassert(priv->resets[rst]);
-			if (err)
-				goto err_reset;
+
+		priv->resets = devm_reset_control_array_get_optional_shared(
+								&dev->dev);
+		if (IS_ERR(priv->resets)) {
+			err = PTR_ERR(priv->resets);
+			goto err_put_clks;
 		}
+
+		err = reset_control_deassert(priv->resets);
+		if (err)
+			goto err_put_clks;
 	}
 
 	if (pdata->big_endian_desc)
@@ -255,8 +199,7 @@ static int ohci_platform_probe(struct platform_device *dev)
 			goto err_reset;
 	}
 
-	res_mem = platform_get_resource(dev, IORESOURCE_MEM, 0);
-	hcd->regs = devm_ioremap_resource(&dev->dev, res_mem);
+	hcd->regs = devm_platform_get_and_ioremap_resource(dev, 0, &res_mem);
 	if (IS_ERR(hcd->regs)) {
 		err = PTR_ERR(hcd->regs);
 		goto err_power;
@@ -264,6 +207,8 @@ static int ohci_platform_probe(struct platform_device *dev)
 	hcd->rsrc_start = res_mem->start;
 	hcd->rsrc_len = resource_size(res_mem);
 
+	hcd->tpl_support = of_usb_host_tpl_support(dev->dev.of_node);
+
 	err = usb_add_hcd(hcd, irq, IRQF_SHARED);
 	if (err)
 		goto err_power;
@@ -279,12 +224,11 @@ err_power:
 		pdata->power_off(dev);
 err_reset:
 	pm_runtime_disable(&dev->dev);
-	while (--rst >= 0)
-		reset_control_assert(priv->resets[rst]);
+	reset_control_assert(priv->resets);
 err_put_clks:
 	while (--clk >= 0)
 		clk_put(priv->clks[clk]);
-err_put_hcd:
+
 	if (pdata == &ohci_platform_defaults)
 		dev->dev.platform_data = NULL;
 
@@ -293,12 +237,12 @@ err_put_hcd:
 	return err;
 }
 
-static int ohci_platform_remove(struct platform_device *dev)
+static void ohci_platform_remove(struct platform_device *dev)
 {
 	struct usb_hcd *hcd = platform_get_drvdata(dev);
 	struct usb_ohci_pdata *pdata = dev_get_platdata(&dev->dev);
 	struct ohci_platform_priv *priv = hcd_to_ohci_priv(hcd);
-	int clk, rst;
+	int clk;
 
 	pm_runtime_get_sync(&dev->dev);
 	usb_remove_hcd(hcd);
@@ -306,8 +250,7 @@ static int ohci_platform_remove(struct platform_device *dev)
 	if (pdata->power_off)
 		pdata->power_off(dev);
 
-	for (rst = 0; rst < OHCI_MAX_RESETS && priv->resets[rst]; rst++)
-		reset_control_assert(priv->resets[rst]);
+	reset_control_assert(priv->resets);
 
 	for (clk = 0; clk < OHCI_MAX_CLKS && priv->clks[clk]; clk++)
 		clk_put(priv->clks[clk]);
@@ -319,8 +262,6 @@ static int ohci_platform_remove(struct platform_device *dev)
 
 	if (pdata == &ohci_platform_defaults)
 		dev->dev.platform_data = NULL;
-
-	return 0;
 }
 
 #ifdef CONFIG_PM_SLEEP
@@ -329,6 +270,7 @@ static int ohci_platform_suspend(struct device *dev)
 	struct usb_hcd *hcd = dev_get_drvdata(dev);
 	struct usb_ohci_pdata *pdata = dev->platform_data;
 	struct platform_device *pdev = to_platform_device(dev);
+	struct ohci_platform_priv *priv = hcd_to_ohci_priv(hcd);
 	bool do_wakeup = device_may_wakeup(dev);
 	int ret;
 
@@ -339,24 +281,55 @@ static int ohci_platform_suspend(struct device *dev)
 	if (pdata->power_suspend)
 		pdata->power_suspend(pdev);
 
+	ret = reset_control_assert(priv->resets);
+	if (ret) {
+		if (pdata->power_on)
+			pdata->power_on(pdev);
+
+		ohci_resume(hcd, false);
+	}
+
 	return ret;
 }
 
-static int ohci_platform_resume(struct device *dev)
+static int ohci_platform_resume_common(struct device *dev, bool hibernated)
 {
 	struct usb_hcd *hcd = dev_get_drvdata(dev);
 	struct usb_ohci_pdata *pdata = dev_get_platdata(dev);
 	struct platform_device *pdev = to_platform_device(dev);
+	struct ohci_platform_priv *priv = hcd_to_ohci_priv(hcd);
+	int err;
+
+	err = reset_control_deassert(priv->resets);
+	if (err)
+		return err;
 
 	if (pdata->power_on) {
-		int err = pdata->power_on(pdev);
-		if (err < 0)
+		err = pdata->power_on(pdev);
+		if (err < 0) {
+			reset_control_assert(priv->resets);
 			return err;
+		}
 	}
 
-	ohci_resume(hcd, false);
+	ohci_resume(hcd, hibernated);
+
+	pm_runtime_disable(dev);
+	pm_runtime_set_active(dev);
+	pm_runtime_enable(dev);
+
 	return 0;
 }
+
+static int ohci_platform_resume(struct device *dev)
+{
+	return ohci_platform_resume_common(dev, false);
+}
+
+static int ohci_platform_restore(struct device *dev)
+{
+	return ohci_platform_resume_common(dev, true);
+}
 #endif /* CONFIG_PM_SLEEP */
 
 static const struct of_device_id ohci_platform_ids[] = {
@@ -373,8 +346,16 @@ static const struct platform_device_id ohci_platform_table[] = {
 };
 MODULE_DEVICE_TABLE(platform, ohci_platform_table);
 
-static SIMPLE_DEV_PM_OPS(ohci_platform_pm_ops, ohci_platform_suspend,
-	ohci_platform_resume);
+#ifdef CONFIG_PM_SLEEP
+static const struct dev_pm_ops ohci_platform_pm_ops = {
+	.suspend = ohci_platform_suspend,
+	.resume = ohci_platform_resume,
+	.freeze = ohci_platform_suspend,
+	.thaw = ohci_platform_resume,
+	.poweroff = ohci_platform_suspend,
+	.restore = ohci_platform_restore,
+};
+#endif
 
 static struct platform_driver ohci_platform_driver = {
 	.id_table	= ohci_platform_table,
@@ -383,8 +364,11 @@ static struct platform_driver ohci_platform_driver = {
 	.shutdown	= usb_hcd_platform_shutdown,
 	.driver		= {
 		.name	= "ohci-platform",
+#ifdef CONFIG_PM_SLEEP
 		.pm	= &ohci_platform_pm_ops,
+#endif
 		.of_match_table = ohci_platform_ids,
+		.probe_type = PROBE_PREFER_ASYNCHRONOUS,
 	}
 };
 
@@ -393,8 +377,6 @@ static int __init ohci_platform_init(void)
 	if (usb_disabled())
 		return -ENODEV;
 
-	pr_info("%s: " DRIVER_DESC "\n", hcd_name);
-
 	ohci_init_driver(&ohci_platform_hc_driver, &platform_overrides);
 	return platform_driver_register(&ohci_platform_driver);
 }