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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>
This commit is contained in:
Alan Stern 2013-03-12 12:44:39 +02:00 committed by Greg Kroah-Hartman
parent a1645eefc8
commit 54a419668b
4 changed files with 37 additions and 48 deletions
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2
drivers/usb/host/Kconfig
View File

@ -155,7 +155,7 @@ config USB_EHCI_MXC
Variation of ARC USB block used in some Freescale chips.
config USB_EHCI_HCD_OMAP
bool "EHCI support for OMAP3 and later chips"
tristate "EHCI support for OMAP3 and later chips"
depends on USB_EHCI_HCD && ARCH_OMAP
default y
---help---

1
drivers/usb/host/Makefile
View File

@ -27,6 +27,7 @@ obj-$(CONFIG_USB_EHCI_HCD) += ehci-hcd.o
obj-$(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-$(CONFIG_USB_EHCI_HCD_OMAP) += ehci-omap.o
obj-$(CONFIG_USB_OXU210HP_HCD) += oxu210hp-hcd.o
obj-$(CONFIG_USB_ISP116X_HCD) += isp116x-hcd.o

6
drivers/usb/host/ehci-hcd.c
View File

@ -1252,11 +1252,6 @@ MODULE_LICENSE ("GPL");
#define PLATFORM_DRIVER ehci_hcd_sh_driver
#endif
#ifdef CONFIG_USB_EHCI_HCD_OMAP
#include "ehci-omap.c"
#define PLATFORM_DRIVER ehci_hcd_omap_driver
#endif
#ifdef CONFIG_PPC_PS3
#include "ehci-ps3.c"
#define PS3_SYSTEM_BUS_DRIVER ps3_ehci_driver
@ -1346,6 +1341,7 @@ MODULE_LICENSE ("GPL");
!IS_ENABLED(CONFIG_USB_EHCI_HCD_PLATFORM) && \
!IS_ENABLED(CONFIG_USB_CHIPIDEA_HOST) && \
!IS_ENABLED(CONFIG_USB_EHCI_MXC) && \
!IS_ENABLED(CONFIG_USB_EHCI_HCD_OMAP) && \
!defined(PLATFORM_DRIVER) && \
!defined(PS3_SYSTEM_BUS_DRIVER) && \
!defined(OF_PLATFORM_DRIVER) && \

76
drivers/usb/host/ehci-omap.c
View File

@ -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 @@ static void disable_put_regulator(
/* 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 @@ static struct platform_driver ehci_hcd_omap_driver = {
/*.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");