USB: EHCI: split ehci-omap out to a separate driver
This patch (as1645) converts ehci-omap over to the new "ehci-hcd is a
library" approach, so that it can coexist peacefully with other EHCI
platform drivers and can make use of the private area allocated at
the end of struct ehci_hcd.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/usb/host/ehci-omap.c b/drivers/usb/host/ehci-omap.c
index 0555ee4..fa66757 100644
--- a/drivers/usb/host/ehci-omap.c
+++ b/drivers/usb/host/ehci-omap.c
@@ -36,6 +36,9 @@
* - convert to use hwmod and runtime PM
*/
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/io.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <linux/usb/ulpi.h>
@@ -43,6 +46,10 @@
#include <linux/pm_runtime.h>
#include <linux/gpio.h>
#include <linux/clk.h>
+#include <linux/usb.h>
+#include <linux/usb/hcd.h>
+
+#include "ehci.h"
#include <linux/platform_data/usb-omap.h>
@@ -57,9 +64,11 @@
#define EHCI_INSNREG05_ULPI_EXTREGADD_SHIFT 8
#define EHCI_INSNREG05_ULPI_WRDATA_SHIFT 0
-/*-------------------------------------------------------------------------*/
+#define DRIVER_DESC "OMAP-EHCI Host Controller driver"
-static const struct hc_driver ehci_omap_hc_driver;
+static const char hcd_name[] = "ehci-omap";
+
+/*-------------------------------------------------------------------------*/
static inline void ehci_write(void __iomem *base, u32 reg, u32 val)
@@ -166,6 +175,12 @@
/* configure so an HC device and id are always provided */
/* always called with process context; sleeping is OK */
+static struct hc_driver __read_mostly ehci_omap_hc_driver;
+
+static const struct ehci_driver_overrides ehci_omap_overrides __initdata = {
+ .reset = omap_ehci_init,
+};
+
/**
* ehci_hcd_omap_probe - initialize TI-based HCDs
*
@@ -315,56 +330,33 @@
/*.suspend = ehci_hcd_omap_suspend, */
/*.resume = ehci_hcd_omap_resume, */
.driver = {
- .name = "ehci-omap",
+ .name = hcd_name,
}
};
/*-------------------------------------------------------------------------*/
-static const struct hc_driver ehci_omap_hc_driver = {
- .description = hcd_name,
- .product_desc = "OMAP-EHCI Host Controller",
- .hcd_priv_size = sizeof(struct ehci_hcd),
+static int __init ehci_omap_init(void)
+{
+ if (usb_disabled())
+ return -ENODEV;
- /*
- * generic hardware linkage
- */
- .irq = ehci_irq,
- .flags = HCD_MEMORY | HCD_USB2,
+ pr_info("%s: " DRIVER_DESC "\n", hcd_name);
- /*
- * basic lifecycle operations
- */
- .reset = omap_ehci_init,
- .start = ehci_run,
- .stop = ehci_stop,
- .shutdown = ehci_shutdown,
+ ehci_init_driver(&ehci_omap_hc_driver, &ehci_omap_overrides);
+ return platform_driver_register(&ehci_hcd_omap_driver);
+}
+module_init(ehci_omap_init);
- /*
- * 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,
-
- .clear_tt_buffer_complete = ehci_clear_tt_buffer_complete,
-};
+static void __exit ehci_omap_cleanup(void)
+{
+ platform_driver_unregister(&ehci_hcd_omap_driver);
+}
+module_exit(ehci_omap_cleanup);
MODULE_ALIAS("platform:ehci-omap");
MODULE_AUTHOR("Texas Instruments, Inc.");
MODULE_AUTHOR("Felipe Balbi <felipe.balbi@nokia.com>");
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_LICENSE("GPL");