@@ -170,6 +170,14 @@ config USB_EHCI_HCD_SPEAR
Enables support for the on-chip EHCI controller on
ST SPEAr chips.
+config USB_EHCI_HCD_AT91
+ tristate "Support for Atmel on-chip EHCI USB controller"
+ depends on USB_EHCI_HCD && ARCH_AT91
+ default y
+ ---help---
+ Enables support for the on-chip EHCI controller on
+ Atmel chips.
+
config USB_EHCI_MSM
bool "Support for MSM on-chip EHCI USB controller"
depends on USB_EHCI_HCD && ARCH_MSM
@@ -28,6 +28,7 @@ obj-$(CONFIG_USB_EHCI_PCI) += ehci-pci.o
obj-$(CONFIG_USB_EHCI_HCD_PLATFORM) += ehci-platform.o
obj-$(CONFIG_USB_EHCI_MXC) += ehci-mxc.o
obj-$(CONFIG_USB_EHCI_HCD_SPEAR) += ehci-spear.o
+obj-$(CONFIG_USB_EHCI_HCD_AT91) += ehci-atmel.o
obj-$(CONFIG_USB_OXU210HP_HCD) += oxu210hp-hcd.o
obj-$(CONFIG_USB_ISP116X_HCD) += isp116x-hcd.o
@@ -15,6 +15,19 @@
#include <linux/platform_device.h>
#include <linux/of.h>
#include <linux/of_platform.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/usb.h>
+#include <linux/usb/hcd.h>
+#include <linux/io.h>
+#include <linux/dma-mapping.h>
+
+#include "ehci.h"
+
+#define DRIVER_DESC "EHCI atmel driver"
+
+static const char hcd_name[] = "ehci-atmel";
+static struct hc_driver __read_mostly ehci_atmel_hc_driver;
/* interface and function clocks */
static struct clk *iclk, *fclk;
@@ -50,51 +63,6 @@ static void atmel_stop_ehci(struct platform_device *pdev)
/*-------------------------------------------------------------------------*/
-static int ehci_atmel_setup(struct usb_hcd *hcd)
-{
- struct ehci_hcd *ehci = hcd_to_ehci(hcd);
-
- /* registers start at offset 0x0 */
- ehci->caps = hcd->regs;
-
- return ehci_setup(hcd);
-}
-
-static const struct hc_driver ehci_atmel_hc_driver = {
- .description = hcd_name,
- .product_desc = "Atmel EHCI UHP HS",
- .hcd_priv_size = sizeof(struct ehci_hcd),
-
- /* generic hardware linkage */
- .irq = ehci_irq,
- .flags = HCD_MEMORY | HCD_USB2,
-
- /* basic lifecycle operations */
- .reset = ehci_atmel_setup,
- .start = ehci_run,
- .stop = ehci_stop,
- .shutdown = ehci_shutdown,
-
- /* managing i/o requests and associated device resources */
- .urb_enqueue = ehci_urb_enqueue,
- .urb_dequeue = ehci_urb_dequeue,
- .endpoint_disable = ehci_endpoint_disable,
- .endpoint_reset = ehci_endpoint_reset,
-
- /* scheduling support */
- .get_frame_number = ehci_get_frame,
-
- /* root hub support */
- .hub_status_data = ehci_hub_status_data,
- .hub_control = ehci_hub_control,
- .bus_suspend = ehci_bus_suspend,
- .bus_resume = ehci_bus_resume,
- .relinquish_port = ehci_relinquish_port,
- .port_handed_over = ehci_port_handed_over,
-
- .clear_tt_buffer_complete = ehci_clear_tt_buffer_complete,
-};
-
static u64 at91_ehci_dma_mask = DMA_BIT_MASK(32);
static int ehci_atmel_drv_probe(struct platform_device *pdev)
@@ -102,6 +70,7 @@ static int ehci_atmel_drv_probe(struct platform_device *pdev)
struct usb_hcd *hcd;
const struct hc_driver *driver = &ehci_atmel_hc_driver;
struct resource *res;
+ struct ehci_hcd *ehci;
int irq;
int retval;
@@ -162,6 +131,10 @@ static int ehci_atmel_drv_probe(struct platform_device *pdev)
goto fail_request_resource;
}
+ ehci = hcd_to_ehci(hcd);
+ /* registers start at offset 0x0 */
+ ehci->caps = hcd->regs;
+
atmel_start_ehci(pdev);
retval = usb_add_hcd(hcd, irq, IRQF_SHARED);
@@ -213,3 +186,25 @@ static struct platform_driver ehci_atmel_driver = {
.of_match_table = of_match_ptr(atmel_ehci_dt_ids),
},
};
+
+static int __init ehci_atmel_init(void)
+{
+ if (usb_disabled())
+ return -ENODEV;
+
+ pr_info("%s: " DRIVER_DESC "\n", hcd_name);
+ ehci_init_driver(&ehci_atmel_hc_driver, NULL);
+ return platform_driver_register(&ehci_atmel_driver);
+}
+module_init(ehci_atmel_init);
+
+static void __exit ehci_atmel_cleanup(void)
+{
+ platform_driver_unregister(&ehci_atmel_driver);
+}
+module_exit(ehci_atmel_cleanup);
+
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_ALIAS("platform:atmel-ehci");
+MODULE_AUTHOR("Nicolas Ferre");
+MODULE_LICENSE("GPL");
@@ -352,7 +352,7 @@ static void ehci_silence_controller(struct ehci_hcd *ehci)
* This forcibly disables dma and IRQs, helping kexec and other cases
* where the next system software may expect clean state.
*/
-static void ehci_shutdown(struct usb_hcd *hcd)
+void ehci_shutdown(struct usb_hcd *hcd)
{
struct ehci_hcd *ehci = hcd_to_ehci(hcd);
@@ -366,6 +366,7 @@ static void ehci_shutdown(struct usb_hcd *hcd)
hrtimer_cancel(&ehci->hrtimer);
}
+EXPORT_SYMBOL_GPL(ehci_shutdown);
/*-------------------------------------------------------------------------*/
@@ -1282,11 +1283,6 @@ MODULE_LICENSE ("GPL");
#define PLATFORM_DRIVER ehci_hcd_w90x900_driver
#endif
-#ifdef CONFIG_ARCH_AT91
-#include "ehci-atmel.c"
-#define PLATFORM_DRIVER ehci_atmel_driver
-#endif
-
#ifdef CONFIG_USB_OCTEON_EHCI
#include "ehci-octeon.c"
#define PLATFORM_DRIVER ehci_octeon_driver
@@ -1342,6 +1338,7 @@ MODULE_LICENSE ("GPL");
!IS_ENABLED(CONFIG_USB_CHIPIDEA_HOST) && \
!IS_ENABLED(CONFIG_USB_EHCI_MXC) && \
!IS_ENABLED(CONFIG_PLAT_SPEAR) && \
+ !IS_ENABLED(CONFIG_ARCH_AT91) && \
!defined(PLATFORM_DRIVER) && \
!defined(PS3_SYSTEM_BUS_DRIVER) && \
!defined(OF_PLATFORM_DRIVER) && \
@@ -798,6 +798,7 @@ struct ehci_driver_overrides {
extern void ehci_init_driver(struct hc_driver *drv,
const struct ehci_driver_overrides *over);
extern int ehci_setup(struct usb_hcd *hcd);
+extern void ehci_shutdown(struct usb_hcd *hcd);
#ifdef CONFIG_PM
extern int ehci_suspend(struct usb_hcd *hcd, bool do_wakeup);