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USB: EHCI: make ehci-mv a separate driver

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This is done do that it could be enabled alongside other platform EHCI
glue drivers on multiplatform kernels.

Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Lubomir Rintel 2018-08-22 22:42:56 +02:00 committed by Greg Kroah-Hartman
parent b32abf8f5d
commit 0440fa3d1b
4 changed files with 43 additions and 61 deletions
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2
drivers/usb/host/Kconfig
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@ -276,7 +276,7 @@ config USB_EHCI_EXYNOS
Enable support for the Samsung Exynos SOC's on-chip EHCI controller.
config USB_EHCI_MV
bool "EHCI support for Marvell PXA/MMP USB controller"
tristate "EHCI support for Marvell PXA/MMP USB controller"
depends on (ARCH_PXA || ARCH_MMP)
select USB_EHCI_ROOT_HUB_TT
---help---

1
drivers/usb/host/Makefile
View File

@ -87,6 +87,7 @@ obj-$(CONFIG_USB_IMX21_HCD) += imx21-hcd.o
obj-$(CONFIG_USB_FSL_USB2) += fsl-mph-dr-of.o
obj-$(CONFIG_USB_EHCI_FSL) += fsl-mph-dr-of.o
obj-$(CONFIG_USB_EHCI_FSL) += ehci-fsl.o
obj-$(CONFIG_USB_EHCI_MV) += ehci-mv.o
obj-$(CONFIG_USB_HCD_BCMA) += bcma-hcd.o
obj-$(CONFIG_USB_HCD_SSB) += ssb-hcd.o
obj-$(CONFIG_USB_FOTG210_HCD) += fotg210-hcd.o

5
drivers/usb/host/ehci-hcd.c
View File

@ -1286,11 +1286,6 @@ MODULE_LICENSE ("GPL");
#define PLATFORM_DRIVER ehci_grlib_driver
#endif
#ifdef CONFIG_USB_EHCI_MV
#include "ehci-mv.c"
#define PLATFORM_DRIVER ehci_mv_driver
#endif
static int __init ehci_hcd_init(void)
{
int retval = 0;

96
drivers/usb/host/ehci-mv.c
View File

@ -12,12 +12,17 @@
#include <linux/err.h>
#include <linux/usb/otg.h>
#include <linux/platform_data/mv_usb.h>
#include <linux/io.h>
#include <linux/usb/hcd.h>
#include "ehci.h"
#define CAPLENGTH_MASK (0xff)
struct ehci_hcd_mv {
struct usb_hcd *hcd;
#define hcd_to_ehci_hcd_mv(h) ((struct ehci_hcd_mv *)hcd_to_ehci(h)->priv)
struct ehci_hcd_mv {
/* Which mode does this ehci running OTG/Host ? */
int mode;
@ -66,7 +71,7 @@ static void mv_ehci_disable(struct ehci_hcd_mv *ehci_mv)
static int mv_ehci_reset(struct usb_hcd *hcd)
{
struct device *dev = hcd->self.controller;
struct ehci_hcd_mv *ehci_mv = dev_get_drvdata(dev);
struct ehci_hcd_mv *ehci_mv = hcd_to_ehci_hcd_mv(hcd);
int retval;
if (ehci_mv == NULL) {
@ -83,46 +88,11 @@ static int mv_ehci_reset(struct usb_hcd *hcd)
return retval;
}
static const struct hc_driver mv_ehci_hc_driver = {
.description = hcd_name,
.product_desc = "Marvell EHCI",
.hcd_priv_size = sizeof(struct ehci_hcd),
static struct hc_driver __read_mostly ehci_platform_hc_driver;
/*
* generic hardware linkage
*/
.irq = ehci_irq,
.flags = HCD_MEMORY | HCD_USB2 | HCD_BH,
/*
* basic lifecycle operations
*/
.reset = mv_ehci_reset,
.start = ehci_run,
.stop = ehci_stop,
.shutdown = ehci_shutdown,
/*
* 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,
.clear_tt_buffer_complete = ehci_clear_tt_buffer_complete,
/*
* 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,
static const struct ehci_driver_overrides platform_overrides __initconst = {
.reset = mv_ehci_reset,
.extra_priv_size = sizeof(struct ehci_hcd_mv),
};
static int mv_ehci_probe(struct platform_device *pdev)
@ -143,19 +113,13 @@ static int mv_ehci_probe(struct platform_device *pdev)
if (usb_disabled())
return -ENODEV;
hcd = usb_create_hcd(&mv_ehci_hc_driver, &pdev->dev, "mv ehci");
hcd = usb_create_hcd(&ehci_platform_hc_driver, &pdev->dev, "mv ehci");
if (!hcd)
return -ENOMEM;
ehci_mv = devm_kzalloc(&pdev->dev, sizeof(*ehci_mv), GFP_KERNEL);
if (ehci_mv == NULL) {
retval = -ENOMEM;
goto err_put_hcd;
}
platform_set_drvdata(pdev, ehci_mv);
platform_set_drvdata(pdev, hcd);
ehci_mv = hcd_to_ehci_hcd_mv(hcd);
ehci_mv->pdata = pdata;
ehci_mv->hcd = hcd;
ehci_mv->clk = devm_clk_get(&pdev->dev, NULL);
if (IS_ERR(ehci_mv->clk)) {
@ -262,8 +226,8 @@ err_put_hcd:
static int mv_ehci_remove(struct platform_device *pdev)
{
struct ehci_hcd_mv *ehci_mv = platform_get_drvdata(pdev);
struct usb_hcd *hcd = ehci_mv->hcd;
struct usb_hcd *hcd = platform_get_drvdata(pdev);
struct ehci_hcd_mv *ehci_mv = hcd_to_ehci_hcd_mv(hcd);
if (hcd->rh_registered)
usb_remove_hcd(hcd);
@ -295,8 +259,8 @@ static const struct platform_device_id ehci_id_table[] = {
static void mv_ehci_shutdown(struct platform_device *pdev)
{
struct ehci_hcd_mv *ehci_mv = platform_get_drvdata(pdev);
struct usb_hcd *hcd = ehci_mv->hcd;
struct usb_hcd *hcd = platform_get_drvdata(pdev);
struct ehci_hcd_mv *ehci_mv = hcd_to_ehci_hcd_mv(hcd);
if (!hcd->rh_registered)
return;
@ -315,3 +279,25 @@ static struct platform_driver ehci_mv_driver = {
},
.id_table = ehci_id_table,
};
static int __init ehci_platform_init(void)
{
if (usb_disabled())
return -ENODEV;
ehci_init_driver(&ehci_platform_hc_driver, &platform_overrides);
return platform_driver_register(&ehci_mv_driver);
}
module_init(ehci_platform_init);
static void __exit ehci_platform_cleanup(void)
{
platform_driver_unregister(&ehci_mv_driver);
}
module_exit(ehci_platform_cleanup);
MODULE_DESCRIPTION("Marvell EHCI driver");
MODULE_AUTHOR("Chao Xie <chao.xie@marvell.com>");
MODULE_AUTHOR("Neil Zhang <zhangwm@marvell.com>");
MODULE_ALIAS("mv-ehci");
MODULE_LICENSE("GPL");