openwrtv4/target/linux/ramips/patches-3.8/0080-MIPS-add-ohci-ehci-support.patch

From ec6f3aa022ef6e61f6ca80c6e30610d879654466 Mon Sep 17 00:00:00 2001
From: John Crispin <blogic@openwrt.org>
Date: Thu, 20 Jun 2013 23:33:05 +0200
Subject: [PATCH] MIPS: add ohci/ehci support

Signed-off-by: John Crsipin <blogic@openwrt.org>
---
 arch/mips/ralink/Kconfig         |    2 ++
 drivers/usb/Makefile             |    3 ++-
 drivers/usb/host/ehci-platform.c |   43 ++++++++++++++++++++++++++++++++------
 drivers/usb/host/ohci-platform.c |   37 +++++++++++++++++++++++++++-----
 4 files changed, 73 insertions(+), 12 deletions(-)

diff --git a/arch/mips/ralink/Kconfig b/arch/mips/ralink/Kconfig
index c8d5b6c..7cd1188 100644
--- a/arch/mips/ralink/Kconfig
+++ b/arch/mips/ralink/Kconfig
@@ -27,6 +27,8 @@ choice
 		bool "MT7620"
 		select CLKEVT_RT3352
 		select HW_HAS_PCI
+		select USB_ARCH_HAS_OHCI
+		select USB_ARCH_HAS_EHCI
 
 endchoice
 
diff --git a/drivers/usb/Makefile b/drivers/usb/Makefile
index f5ed3d7..41a4741 100644
--- a/drivers/usb/Makefile
+++ b/drivers/usb/Makefile
@@ -12,6 +12,8 @@ obj-$(CONFIG_USB_DWC3)		+= dwc3/
 
 obj-$(CONFIG_USB_MON)		+= mon/
 
+obj-$(CONFIG_USB_COMMON)	+= phy/
+
 obj-$(CONFIG_PCI)		+= host/
 obj-$(CONFIG_USB_EHCI_HCD)	+= host/
 obj-$(CONFIG_USB_ISP116X_HCD)	+= host/
@@ -46,7 +48,6 @@ obj-$(CONFIG_USB_MICROTEK)	+= image/
 obj-$(CONFIG_USB_SERIAL)	+= serial/
 
 obj-$(CONFIG_USB)		+= misc/
-obj-$(CONFIG_USB_COMMON)	+= phy/
 obj-$(CONFIG_EARLY_PRINTK_DBGP)	+= early/
 
 obj-$(CONFIG_USB_ATM)		+= atm/
diff --git a/drivers/usb/host/ehci-platform.c b/drivers/usb/host/ehci-platform.c
index 58fa0c9..0050df7 100644
--- a/drivers/usb/host/ehci-platform.c
+++ b/drivers/usb/host/ehci-platform.c
@@ -23,6 +23,10 @@
 #include <linux/io.h>
 #include <linux/module.h>
 #include <linux/platform_device.h>
+#include <linux/dma-mapping.h>
+#include <linux/of.h>
+#include <linux/usb/otg.h>
+#include <linux/usb/phy.h>
 #include <linux/usb.h>
 #include <linux/usb/hcd.h>
 #include <linux/usb/ehci_pdriver.h>
@@ -61,22 +65,40 @@ static const struct ehci_driver_overrides platform_overrides __initdata = {
 	.reset =	ehci_platform_reset,
 };
 
+static struct usb_ehci_pdata ehci_platform_defaults;
+
 static int ehci_platform_probe(struct platform_device *dev)
 {
 	struct usb_hcd *hcd;
 	struct resource *res_mem;
-	struct usb_ehci_pdata *pdata = dev->dev.platform_data;
+	struct usb_ehci_pdata *pdata;
 	int irq;
 	int err = -ENOMEM;
 
-	if (!pdata) {
-		WARN_ON(1);
-		return -ENODEV;
-	}
-
 	if (usb_disabled())
 		return -ENODEV;
 
+	/*
+	 * use reasonable defaults so platforms don't have to provide these.
+	 * with DT probing on ARM, none of these are set.
+	 */
+	if (!dev->dev.platform_data)
+		dev->dev.platform_data = &ehci_platform_defaults;
+	if (!dev->dev.dma_mask)
+		dev->dev.dma_mask = &dev->dev.coherent_dma_mask;
+	if (!dev->dev.coherent_dma_mask)
+		dev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
+
+	pdata = dev->dev.platform_data;
+
+#ifdef CONFIG_USB_COMMON
+	hcd->phy = devm_usb_get_phy(&dev->dev, USB_PHY_TYPE_USB2);
+	if (!IS_ERR_OR_NULL(hcd->phy)) {
+		otg_set_host(hcd->phy->otg,
+				&hcd->self);
+		usb_phy_init(hcd->phy);
+	}
+#endif
 	irq = platform_get_irq(dev, 0);
 	if (irq < 0) {
 		dev_err(&dev->dev, "no irq provided");
@@ -138,6 +160,9 @@ static int ehci_platform_remove(struct platform_device *dev)
 	if (pdata->power_off)
 		pdata->power_off(dev);
 
+	if (pdata == &ehci_platform_defaults)
+		dev->dev.platform_data = NULL;
+
 	return 0;
 }
 
@@ -182,6 +207,11 @@ static int ehci_platform_resume(struct device *dev)
 #define ehci_platform_resume	NULL
 #endif /* CONFIG_PM */
 
+static const struct of_device_id ralink_ehci_ids[] = {
+	{ .compatible = "ralink,rt3xxx-ehci", },
+	{}
+};
+
 static const struct platform_device_id ehci_platform_table[] = {
 	{ "ehci-platform", 0 },
 	{ }
@@ -202,6 +232,7 @@ static struct platform_driver ehci_platform_driver = {
 		.owner	= THIS_MODULE,
 		.name	= "ehci-platform",
 		.pm	= &ehci_platform_pm_ops,
+		.of_match_table = of_match_ptr(ralink_ehci_ids),
 	}
 };
 
diff --git a/drivers/usb/host/ohci-platform.c b/drivers/usb/host/ohci-platform.c
index 084503b..3a60f96 100644
--- a/drivers/usb/host/ohci-platform.c
+++ b/drivers/usb/host/ohci-platform.c
@@ -15,6 +15,10 @@
  */
 #include <linux/platform_device.h>
 #include <linux/usb/ohci_pdriver.h>
+#include <linux/dma-mapping.h>
+#include <linux/of.h>
+
+static struct usb_ohci_pdata ohci_platform_defaults;
 
 static int ohci_platform_reset(struct usb_hcd *hcd)
 {
@@ -87,14 +91,22 @@ static int ohci_platform_probe(struct platform_device *dev)
 {
 	struct usb_hcd *hcd;
 	struct resource *res_mem;
-	struct usb_ohci_pdata *pdata = dev->dev.platform_data;
+	struct usb_ohci_pdata *pdata;
 	int irq;
 	int err = -ENOMEM;
 
-	if (!pdata) {
-		WARN_ON(1);
-		return -ENODEV;
-	}
+	/*
+	 * use reasonable defaults so platforms don't have to provide these.
+	 * with DT probing on ARM, none of these are set.
+	 */
+	if (!dev->dev.platform_data)
+		dev->dev.platform_data = &ohci_platform_defaults;
+	if (!dev->dev.dma_mask)
+		dev->dev.dma_mask = &dev->dev.coherent_dma_mask;
+	if (!dev->dev.coherent_dma_mask)
+		dev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
+
+	pdata = dev->dev.platform_data;
 
 	if (usb_disabled())
 		return -ENODEV;
@@ -124,6 +136,12 @@ static int ohci_platform_probe(struct platform_device *dev)
 		goto err_power;
 	}
 
+#ifdef CONFIG_USB_COMMON
+	hcd->phy = devm_usb_get_phy(&dev->dev, USB_PHY_TYPE_USB2);
+	if (!IS_ERR_OR_NULL(hcd->phy))
+		usb_phy_init(hcd->phy);
+#endif
+
 	hcd->rsrc_start = res_mem->start;
 	hcd->rsrc_len = resource_size(res_mem);
 
@@ -161,6 +179,9 @@ static int ohci_platform_remove(struct platform_device *dev)
 	if (pdata->power_off)
 		pdata->power_off(dev);
 
+	if (pdata == &ohci_platform_defaults)
+		dev->dev.platform_data = NULL;
+
 	return 0;
 }
 
@@ -200,6 +221,11 @@ static int ohci_platform_resume(struct device *dev)
 #define ohci_platform_resume	NULL
 #endif /* CONFIG_PM */
 
+static const struct of_device_id ralink_ohci_ids[] = {
+	{ .compatible = "ralink,rt3xxx-ohci", },
+	{}
+};
+
 static const struct platform_device_id ohci_platform_table[] = {
 	{ "ohci-platform", 0 },
 	{ }
@@ -220,5 +246,6 @@ static struct platform_driver ohci_platform_driver = {
 		.owner	= THIS_MODULE,
 		.name	= "ohci-platform",
 		.pm	= &ohci_platform_pm_ops,
+		.of_match_table = of_match_ptr(ralink_ohci_ids),
 	}
 };
-- 
1.7.10.4