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authorManjunath Goudar <manjunath.goudar@linaro.org>2013-06-03 20:46:08 +0530
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2013-06-03 11:02:26 -0700
commit928fb68e2357be8d82efd03d1a8555d8fa0713e6 (patch)
tree5624c034483620faea8f75cd123acf7fa44410ca
parent2373536537efa4d9d71da12a666c081ebc9a1ba1 (diff)
downloadlinux-928fb68e2357be8d82efd03d1a8555d8fa0713e6.tar.bz2
USB: OHCI: make ohci-platform a separate driver
This patch splits the ohci-platform code from ohci-hcd out into its own separate driver module.This work is part of enabling multi-platform kernels on ARM. In V2: -Passed "hcd" argument instead of "ohci" in ohci_setup() because it is using "struct usb_hcd" argument. In V3: -Directly passed "hcd" argument not required to call ohci_to_hcd() function. Signed-off-by: Manjunath Goudar <manjunath.goudar@linaro.org> Acked-by: Alan Stern <stern@rowland.harvard.edu> Cc: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r--drivers/usb/host/Kconfig2
-rw-r--r--drivers/usb/host/Makefile1
-rw-r--r--drivers/usb/host/ohci-hcd.c6
-rw-r--r--drivers/usb/host/ohci-platform.c88
4 files changed, 44 insertions, 53 deletions
diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig
index 972ddd39c1de..d61a026b9248 100644
--- a/drivers/usb/host/Kconfig
+++ b/drivers/usb/host/Kconfig
@@ -481,7 +481,7 @@ config USB_CNS3XXX_OHCI
It is needed for low-speed USB 1.0 device support.
config USB_OHCI_HCD_PLATFORM
- bool "Generic OHCI driver for a platform device"
+ tristate "Generic OHCI driver for a platform device"
default n
---help---
Adds an OHCI host driver for a generic platform device, which
diff --git a/drivers/usb/host/Makefile b/drivers/usb/host/Makefile
index dbc785d6b4a1..b41fa5f9c279 100644
--- a/drivers/usb/host/Makefile
+++ b/drivers/usb/host/Makefile
@@ -40,6 +40,7 @@ obj-$(CONFIG_USB_ISP1362_HCD) += isp1362-hcd.o
obj-$(CONFIG_USB_OHCI_HCD) += ohci-hcd.o
obj-$(CONFIG_USB_OHCI_HCD_PCI) += ohci-pci.o
+obj-$(CONFIG_USB_OHCI_HCD_PLATFORM) += ohci-platform.o
obj-$(CONFIG_USB_UHCI_HCD) += uhci-hcd.o
obj-$(CONFIG_USB_FHCI_HCD) += fhci.o
diff --git a/drivers/usb/host/ohci-hcd.c b/drivers/usb/host/ohci-hcd.c
index 52959a1f0708..4847ee971db9 100644
--- a/drivers/usb/host/ohci-hcd.c
+++ b/drivers/usb/host/ohci-hcd.c
@@ -1262,12 +1262,8 @@ MODULE_LICENSE ("GPL");
#define PLATFORM_DRIVER ohci_hcd_tilegx_driver
#endif
-#ifdef CONFIG_USB_OHCI_HCD_PLATFORM
-#include "ohci-platform.c"
-#define PLATFORM_DRIVER ohci_platform_driver
-#endif
-
#if !IS_ENABLED(CONFIG_USB_OHCI_HCD_PCI) && \
+ !IS_ENABLED(CONFIG_USB_OHCI_HCD_PLATFORM) && \
!defined(PLATFORM_DRIVER) && \
!defined(OMAP1_PLATFORM_DRIVER) && \
!defined(OMAP3_PLATFORM_DRIVER) && \
diff --git a/drivers/usb/host/ohci-platform.c b/drivers/usb/host/ohci-platform.c
index 76a3531bf9d1..bc30475c3a23 100644
--- a/drivers/usb/host/ohci-platform.c
+++ b/drivers/usb/host/ohci-platform.c
@@ -13,16 +13,28 @@
*
* Licensed under the GNU/GPL. See COPYING for details.
*/
+
+#include <linux/hrtimer.h>
+#include <linux/io.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
#include <linux/err.h>
#include <linux/platform_device.h>
#include <linux/usb/ohci_pdriver.h>
+#include <linux/usb.h>
+#include <linux/usb/hcd.h>
+
+#include "ohci.h"
+
+#define DRIVER_DESC "OHCI generic platform driver"
+
+static const char hcd_name[] = "ohci-platform";
static int ohci_platform_reset(struct usb_hcd *hcd)
{
struct platform_device *pdev = to_platform_device(hcd->self.controller);
struct usb_ohci_pdata *pdata = pdev->dev.platform_data;
struct ohci_hcd *ohci = hcd_to_ohci(hcd);
- int err;
if (pdata->big_endian_desc)
ohci->flags |= OHCI_QUIRK_BE_DESC;
@@ -30,58 +42,17 @@ static int ohci_platform_reset(struct usb_hcd *hcd)
ohci->flags |= OHCI_QUIRK_BE_MMIO;
if (pdata->no_big_frame_no)
ohci->flags |= OHCI_QUIRK_FRAME_NO;
-
- ohci_hcd_init(ohci);
-
if (pdata->num_ports)
ohci->num_ports = pdata->num_ports;
- err = ohci_init(ohci);
-
- return err;
-}
-
-static int ohci_platform_start(struct usb_hcd *hcd)
-{
- struct ohci_hcd *ohci = hcd_to_ohci(hcd);
- int err;
-
- err = ohci_run(ohci);
- if (err < 0) {
- ohci_err(ohci, "can't start\n");
- ohci_stop(hcd);
- }
-
- return err;
+ return ohci_setup(hcd);
}
-static const struct hc_driver ohci_platform_hc_driver = {
- .description = hcd_name,
- .product_desc = "Generic Platform OHCI Controller",
- .hcd_priv_size = sizeof(struct ohci_hcd),
+static struct hc_driver __read_mostly ohci_platform_hc_driver;
- .irq = ohci_irq,
- .flags = HCD_MEMORY | HCD_USB11,
-
- .reset = ohci_platform_reset,
- .start = ohci_platform_start,
- .stop = ohci_stop,
- .shutdown = ohci_shutdown,
-
- .urb_enqueue = ohci_urb_enqueue,
- .urb_dequeue = ohci_urb_dequeue,
- .endpoint_disable = ohci_endpoint_disable,
-
- .get_frame_number = ohci_get_frame,
-
- .hub_status_data = ohci_hub_status_data,
- .hub_control = ohci_hub_control,
-#ifdef CONFIG_PM
- .bus_suspend = ohci_bus_suspend,
- .bus_resume = ohci_bus_resume,
-#endif
-
- .start_port_reset = ohci_start_port_reset,
+static const struct ohci_driver_overrides platform_overrides __initconst = {
+ .product_desc = "Generic Platform OHCI controller",
+ .reset = ohci_platform_reset,
};
static int ohci_platform_probe(struct platform_device *dev)
@@ -222,3 +193,26 @@ static struct platform_driver ohci_platform_driver = {
.pm = &ohci_platform_pm_ops,
}
};
+
+static int __init ohci_platform_init(void)
+{
+ if (usb_disabled())
+ return -ENODEV;
+
+ pr_info("%s: " DRIVER_DESC "\n", hcd_name);
+
+ ohci_init_driver(&ohci_platform_hc_driver, &platform_overrides);
+ return platform_driver_register(&ohci_platform_driver);
+}
+module_init(ohci_platform_init);
+
+static void __exit ohci_platform_cleanup(void)
+{
+ platform_driver_unregister(&ohci_platform_driver);
+}
+module_exit(ohci_platform_cleanup);
+
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_AUTHOR("Hauke Mehrtens");
+MODULE_AUTHOR("Alan Stern");
+MODULE_LICENSE("GPL");