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USB: OHCI: make ohci-ep93xx a separate driver 

Separate the OHCI EP93XX host controller driver from ohci-hcd
host code so that it can be built as a separate driver module.
This work is part of enabling multi-platform kernels on ARM.

Signed-off-by: Manjunath Goudar <manjunath.goudar@linaro.org>
Signed-off-by: Deepak Saxena <dsaxena@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>
This commit is contained in:
Manjunath Goudar 2013-09-21 16:38:45 +05:30 committed by Greg Kroah-Hartman
parent 30330b8fed
commit e2404434b6
4 changed files with 43 additions and 62 deletions
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8
drivers/usb/host/Kconfig
View File

@ -397,6 +397,14 @@ config USB_OHCI_HCD_LPC32XX
Enables support for the on-chip OHCI controller on
NXP chips.
config USB_OHCI_HCD_EP93XX
tristate "Support for EP93XX on-chip OHCI USB controller"
depends on USB_OHCI_HCD && ARCH_EP93XX
default y
---help---
Enables support for the on-chip OHCI controller on
EP93XX chips.
config USB_OHCI_HCD_AT91
tristate "Support for Atmel on-chip OHCI USB controller"
depends on USB_OHCI_HCD && ARCH_AT91

1
drivers/usb/host/Makefile
View File

@ -54,6 +54,7 @@ obj-$(CONFIG_USB_OHCI_HCD_SPEAR) += ohci-spear.o
obj-$(CONFIG_USB_OHCI_HCD_AT91) += ohci-at91.o
obj-$(CONFIG_USB_OHCI_HCD_S3C2410) += ohci-s3c2410.o
obj-$(CONFIG_USB_OHCI_HCD_LPC32XX) += ohci-nxp.o
obj-$(CONFIG_USB_OHCI_HCD_EP93XX) += ohci-ep93xx.o
obj-$(CONFIG_USB_UHCI_HCD) += uhci-hcd.o
obj-$(CONFIG_USB_FHCI_HCD) += fhci.o

78
drivers/usb/host/ohci-ep93xx.c
View File

@ -25,51 +25,24 @@
#include <linux/clk.h>
#include <linux/device.h>
#include <linux/signal.h>
#include <linux/io.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/signal.h>
#include <linux/usb.h>
#include <linux/usb/hcd.h>
#include "ohci.h"
#define DRIVER_DESC "OHCI EP93xx driver"
static const char hcd_name[] = "ohci-ep93xx";
static struct hc_driver __read_mostly ohci_ep93xx_hc_driver;
static struct clk *usb_host_clock;
static int ohci_ep93xx_start(struct usb_hcd *hcd)
{
struct ohci_hcd *ohci = hcd_to_ohci(hcd);
int ret;
if ((ret = ohci_init(ohci)) < 0)
return ret;
if ((ret = ohci_run(ohci)) < 0) {
dev_err(hcd->self.controller, "can't start %s\n",
hcd->self.bus_name);
ohci_stop(hcd);
return ret;
}
return 0;
}
static struct hc_driver ohci_ep93xx_hc_driver = {
.description = hcd_name,
.product_desc = "EP93xx OHCI",
.hcd_priv_size = sizeof(struct ohci_hcd),
.irq = ohci_irq,
.flags = HCD_USB11 | HCD_MEMORY,
.start = ohci_ep93xx_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 int ohci_hcd_ep93xx_drv_probe(struct platform_device *pdev)
{
struct usb_hcd *hcd;
@ -109,8 +82,6 @@ static int ohci_hcd_ep93xx_drv_probe(struct platform_device *pdev)
clk_enable(usb_host_clock);
ohci_hcd_init(hcd_to_ohci(hcd));
ret = usb_add_hcd(hcd, irq, 0);
if (ret)
goto err_clk_disable;
@ -166,7 +137,6 @@ static int ohci_hcd_ep93xx_drv_resume(struct platform_device *pdev)
}
#endif
static struct platform_driver ohci_hcd_ep93xx_driver = {
.probe = ohci_hcd_ep93xx_drv_probe,
.remove = ohci_hcd_ep93xx_drv_remove,
@ -181,4 +151,24 @@ static struct platform_driver ohci_hcd_ep93xx_driver = {
},
};
static int __init ohci_ep93xx_init(void)
{
if (usb_disabled())
return -ENODEV;
pr_info("%s: " DRIVER_DESC "\n", hcd_name);
ohci_init_driver(&ohci_ep93xx_hc_driver, NULL);
return platform_driver_register(&ohci_hcd_ep93xx_driver);
}
module_init(ohci_ep93xx_init);
static void __exit ohci_ep93xx_cleanup(void)
{
platform_driver_unregister(&ohci_hcd_ep93xx_driver);
}
module_exit(ohci_ep93xx_cleanup);
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:ep93xx-ohci");

18
drivers/usb/host/ohci-hcd.c
View File

@ -1182,11 +1182,6 @@ MODULE_LICENSE ("GPL");
#define PLATFORM_DRIVER ohci_hcd_pxa27x_driver
#endif
#ifdef CONFIG_ARCH_EP93XX
#include "ohci-ep93xx.c"
#define EP93XX_PLATFORM_DRIVER ohci_hcd_ep93xx_driver
#endif
#ifdef CONFIG_ARCH_DAVINCI_DA8XX
#include "ohci-da8xx.c"
#define DAVINCI_PLATFORM_DRIVER ohci_hcd_da8xx_driver
@ -1283,12 +1278,6 @@ static int __init ohci_hcd_mod_init(void)
goto error_tmio;
#endif
#ifdef EP93XX_PLATFORM_DRIVER
retval = platform_driver_register(&EP93XX_PLATFORM_DRIVER);
if (retval < 0)
goto error_ep93xx;
#endif
#ifdef DAVINCI_PLATFORM_DRIVER
retval = platform_driver_register(&DAVINCI_PLATFORM_DRIVER);
if (retval < 0)
@ -1302,10 +1291,6 @@ static int __init ohci_hcd_mod_init(void)
platform_driver_unregister(&DAVINCI_PLATFORM_DRIVER);
error_davinci:
#endif
#ifdef EP93XX_PLATFORM_DRIVER
platform_driver_unregister(&EP93XX_PLATFORM_DRIVER);
error_ep93xx:
#endif
#ifdef TMIO_OHCI_DRIVER
platform_driver_unregister(&TMIO_OHCI_DRIVER);
error_tmio:
@ -1346,9 +1331,6 @@ static void __exit ohci_hcd_mod_exit(void)
#ifdef DAVINCI_PLATFORM_DRIVER
platform_driver_unregister(&DAVINCI_PLATFORM_DRIVER);
#endif
#ifdef EP93XX_PLATFORM_DRIVER
platform_driver_unregister(&EP93XX_PLATFORM_DRIVER);
#endif
#ifdef TMIO_OHCI_DRIVER
platform_driver_unregister(&TMIO_OHCI_DRIVER);
#endif