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@@ -19,19 +19,36 @@
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* This file is licenced under the GPL.
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*/
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-#include <linux/platform_device.h>
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#include <linux/clk.h>
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+#include <linux/io.h>
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+#include <linux/kernel.h>
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+#include <linux/module.h>
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+#include <linux/platform_device.h>
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#include <linux/platform_data/usb-ohci-s3c2410.h>
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+#include <linux/usb.h>
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+#include <linux/usb/hcd.h>
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+
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+#include "ohci.h"
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+
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#define valid_port(idx) ((idx) == 1 || (idx) == 2)
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/* clock device associated with the hcd */
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+
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+#define DRIVER_DESC "OHCI S3C2410 driver"
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+
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+static const char hcd_name[] = "ohci-s3c2410";
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+
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static struct clk *clk;
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static struct clk *usb_clk;
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/* forward definitions */
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+static int (*orig_ohci_hub_control)(struct usb_hcd *hcd, u16 typeReq,
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+ u16 wValue, u16 wIndex, char *buf, u16 wLength);
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+static int (*orig_ohci_hub_status_data)(struct usb_hcd *hcd, char *buf);
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+
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static void s3c2410_hcd_oc(struct s3c2410_hcd_info *info, int port_oc);
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/* conversion functions */
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@@ -93,7 +110,7 @@ ohci_s3c2410_hub_status_data(struct usb_hcd *hcd, char *buf)
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int orig;
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int portno;
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- orig = ohci_hub_status_data(hcd, buf);
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+ orig = orig_ohci_hub_status_data(hcd, buf);
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if (info == NULL)
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return orig;
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@@ -164,7 +181,7 @@ static int ohci_s3c2410_hub_control(
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* process the request straight away and exit */
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if (info == NULL) {
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- ret = ohci_hub_control(hcd, typeReq, wValue,
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+ ret = orig_ohci_hub_control(hcd, typeReq, wValue,
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wIndex, buf, wLength);
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goto out;
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}
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@@ -214,7 +231,7 @@ static int ohci_s3c2410_hub_control(
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break;
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}
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- ret = ohci_hub_control(hcd, typeReq, wValue, wIndex, buf, wLength);
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+ ret = orig_ohci_hub_control(hcd, typeReq, wValue, wIndex, buf, wLength);
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if (ret)
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goto out;
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@@ -374,8 +391,6 @@ static int usb_hcd_s3c2410_probe(const struct hc_driver *driver,
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s3c2410_start_hc(dev, hcd);
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- ohci_hcd_init(hcd_to_ohci(hcd));
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-
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retval = usb_add_hcd(hcd, dev->resource[1].start, 0);
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if (retval != 0)
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goto err_ioremap;
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@@ -392,71 +407,7 @@ static int usb_hcd_s3c2410_probe(const struct hc_driver *driver,
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/*-------------------------------------------------------------------------*/
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-static int
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-ohci_s3c2410_start(struct usb_hcd *hcd)
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-{
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- struct ohci_hcd *ohci = hcd_to_ohci(hcd);
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- int ret;
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-
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- ret = ohci_init(ohci);
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- if (ret < 0)
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- return ret;
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-
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- ret = ohci_run(ohci);
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- if (ret < 0) {
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- dev_err(hcd->self.controller, "can't start %s\n",
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- hcd->self.bus_name);
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- ohci_stop(hcd);
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- return ret;
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- }
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-
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- return 0;
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-}
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-
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-
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-static const struct hc_driver ohci_s3c2410_hc_driver = {
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- .description = hcd_name,
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- .product_desc = "S3C24XX OHCI",
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- .hcd_priv_size = sizeof(struct ohci_hcd),
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-
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- /*
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- * generic hardware linkage
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- */
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- .irq = ohci_irq,
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- .flags = HCD_USB11 | HCD_MEMORY,
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-
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- /*
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- * basic lifecycle operations
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- */
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- .start = ohci_s3c2410_start,
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- .stop = ohci_stop,
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- .shutdown = ohci_shutdown,
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-
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- /*
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- * managing i/o requests and associated device resources
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- */
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- .urb_enqueue = ohci_urb_enqueue,
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- .urb_dequeue = ohci_urb_dequeue,
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- .endpoint_disable = ohci_endpoint_disable,
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-
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- /*
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- * scheduling support
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- */
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- .get_frame_number = ohci_get_frame,
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-
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- /*
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- * root hub support
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- */
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- .hub_status_data = ohci_s3c2410_hub_status_data,
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- .hub_control = ohci_s3c2410_hub_control,
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-#ifdef CONFIG_PM
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- .bus_suspend = ohci_bus_suspend,
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- .bus_resume = ohci_bus_resume,
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-#endif
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- .start_port_reset = ohci_start_port_reset,
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-};
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-
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-/* device driver */
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+static struct hc_driver __read_mostly ohci_s3c2410_hc_driver;
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static int ohci_hcd_s3c2410_drv_probe(struct platform_device *pdev)
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{
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@@ -533,4 +484,39 @@ static struct platform_driver ohci_hcd_s3c2410_driver = {
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},
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};
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+static int __init ohci_s3c2410_init(void)
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+{
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+ if (usb_disabled())
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+ return -ENODEV;
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+
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+ pr_info("%s: " DRIVER_DESC "\n", hcd_name);
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+ ohci_init_driver(&ohci_s3c2410_hc_driver, NULL);
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+
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+ /*
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+ * The Samsung HW has some unusual quirks, which require
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+ * Sumsung-specific workarounds. We override certain hc_driver
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+ * functions here to achieve that. We explicitly do not enhance
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+ * ohci_driver_overrides to allow this more easily, since this
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+ * is an unusual case, and we don't want to encourage others to
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+ * override these functions by making it too easy.
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+ */
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+
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+ orig_ohci_hub_control = ohci_s3c2410_hc_driver.hub_control;
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+ orig_ohci_hub_status_data = ohci_s3c2410_hc_driver.hub_status_data;
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+
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+ ohci_s3c2410_hc_driver.hub_status_data = ohci_s3c2410_hub_status_data;
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+ ohci_s3c2410_hc_driver.hub_control = ohci_s3c2410_hub_control;
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+
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+ return platform_driver_register(&ohci_hcd_s3c2410_driver);
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+}
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+module_init(ohci_s3c2410_init);
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+
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+static void __exit ohci_s3c2410_cleanup(void)
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+{
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+ platform_driver_unregister(&ohci_hcd_s3c2410_driver);
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+}
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+module_exit(ohci_s3c2410_cleanup);
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+
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+MODULE_DESCRIPTION(DRIVER_DESC);
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+MODULE_LICENSE("GPL");
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MODULE_ALIAS("platform:s3c2410-ohci");
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Manjunath Goudar