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From 9a15efea2e55327cf7c813da64589509f9c40786 Mon Sep 17 00:00:00 2001
From: John Crispin <blogic@openwrt.org>
Date: Thu, 16 May 2013 23:11:45 +0200
Subject: [PATCH 161/164] USB: add OHCI/EHCI OF binding
based on f3bc64d6d1f21c1b92d75f233a37b75d77af6963
Signed-off-by: John Crispin <blogic@openwrt.org>
---
arch/mips/ralink/Kconfig | 2 ++
drivers/usb/Makefile | 3 ++-
drivers/usb/host/ehci-platform.c | 44 ++++++++++++++++++++++++++++++++------
drivers/usb/host/ohci-platform.c | 37 +++++++++++++++++++++++++++-----
4 files changed, 74 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 8f5ebce..b766256 100644
--- a/drivers/usb/Makefile
+++ b/drivers/usb/Makefile
@@ -12,6 +12,8 @@ obj-$(CONFIG_USB_DWC3) += dwc3/
obj-$(CONFIG_USB_MON) += mon/
+obj-$(CONFIG_USB_OTG_UTILS) += phy/
+
obj-$(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_OTG_UTILS) += 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 ca75063..ae32410 100644
--- a/drivers/usb/host/ehci-platform.c
+++ b/drivers/usb/host/ehci-platform.c
@@ -18,14 +18,18 @@
*
* Licensed under the GNU/GPL. See COPYING for details.
*/
+#include <linux/dma-mapping.h>
#include <linux/err.h>
#include <linux/kernel.h>
#include <linux/hrtimer.h>
#include <linux/io.h>
#include <linux/module.h>
+#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/usb.h>
#include <linux/usb/hcd.h>
+#include <linux/usb/otg.h>
+#include <linux/usb/phy.h>
#include <linux/usb/ehci_pdriver.h>
#include "ehci.h"
@@ -62,22 +66,32 @@ 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;
+
irq = platform_get_irq(dev, 0);
if (irq < 0) {
dev_err(&dev->dev, "no irq provided");
@@ -105,6 +119,15 @@ static int ehci_platform_probe(struct platform_device *dev)
hcd->rsrc_start = res_mem->start;
hcd->rsrc_len = resource_size(res_mem);
+#ifdef CONFIG_USB_OTG_UTILS
+ 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
+
hcd->regs = devm_ioremap_resource(&dev->dev, res_mem);
if (IS_ERR(hcd->regs)) {
err = PTR_ERR(hcd->regs);
@@ -139,6 +162,9 @@ 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;
}
@@ -183,6 +209,11 @@ 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 },
{ }
@@ -203,6 +234,7 @@ 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 c3e7287..dd9bac6 100644
--- a/drivers/usb/host/ohci-platform.c
+++ b/drivers/usb/host/ohci-platform.c
@@ -16,6 +16,10 @@
#include <linux/err.h>
#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)
{
@@ -88,14 +92,22 @@ 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;
@@ -128,6 +140,12 @@ static int ohci_platform_probe(struct platform_device *dev)
hcd->rsrc_start = res_mem->start;
hcd->rsrc_len = resource_size(res_mem);
+#ifdef CONFIG_USB_OTG_UTILS
+ 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->regs = devm_ioremap_resource(&dev->dev, res_mem);
if (IS_ERR(hcd->regs)) {
err = PTR_ERR(hcd->regs);
@@ -162,6 +180,9 @@ 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;
}
@@ -201,6 +222,11 @@ 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 },
{ }
@@ -221,5 +247,6 @@ 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
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