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USB: EHCI: make ehci-w90X900 a separate driver
Separate the W90X900(W90P910) on-chip host controller driver from
ehci-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;
however, note that other changes are still needed before W90X900(W90P910)
can be booted with a multi-platform kernel
and an ehci driver that only works on one of them.
With the infrastructure added by Alan Stern in patch 3e0232039
"USB: EHCI: prepare to make ehci-hcd a library module", we can
avoid this problem by turning a bus glue into a separate
module, as we do here for the w90X900 bus glue.
This patch is rebased on greghk/usb-next 3.12 rc1.
Signed-off-by: Manjunath Goudar <manjunath.goudar@linaro.org>
Signed-off-by: Deepak Saxena <dsaxena@linaro.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Wan ZongShun <mcuos.com@gmail.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
parent
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@ -224,7 +224,7 @@ config USB_EHCI_MV
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on-chip EHCI USB controller" for those.
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config USB_W90X900_EHCI
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bool "W90X900(W90P910) EHCI support"
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tristate "W90X900(W90P910) EHCI support"
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depends on ARCH_W90X900
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---help---
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Enables support for the W90X900 USB controller
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@ -38,6 +38,7 @@ obj-$(CONFIG_USB_EHCI_S5P) += ehci-s5p.o
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obj-$(CONFIG_USB_EHCI_HCD_AT91) += ehci-atmel.o
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obj-$(CONFIG_USB_EHCI_MSM) += ehci-msm.o
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obj-$(CONFIG_USB_EHCI_TEGRA) += ehci-tegra.o
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obj-$(CONFIG_USB_W90X900_EHCI) += ehci-w90x900.o
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obj-$(CONFIG_USB_OXU210HP_HCD) += oxu210hp-hcd.o
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obj-$(CONFIG_USB_ISP116X_HCD) += isp116x-hcd.o
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@ -1238,11 +1238,6 @@ MODULE_LICENSE ("GPL");
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#define XILINX_OF_PLATFORM_DRIVER ehci_hcd_xilinx_of_driver
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#endif
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#ifdef CONFIG_USB_W90X900_EHCI
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#include "ehci-w90x900.c"
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#define PLATFORM_DRIVER ehci_hcd_w90x900_driver
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#endif
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#ifdef CONFIG_USB_OCTEON_EHCI
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#include "ehci-octeon.c"
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#define PLATFORM_DRIVER ehci_octeon_driver
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@ -11,13 +11,28 @@
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*
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*/
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#include <linux/dma-mapping.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/of.h>
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#include <linux/platform_device.h>
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#include <linux/usb.h>
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#include <linux/usb/hcd.h>
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#include "ehci.h"
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/* enable phy0 and phy1 for w90p910 */
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#define ENPHY (0x01<<8)
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#define PHY0_CTR (0xA4)
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#define PHY1_CTR (0xA8)
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#define DRIVER_DESC "EHCI w90x900 driver"
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static const char hcd_name[] = "ehci-w90x900 ";
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static struct hc_driver __read_mostly ehci_w90x900_hc_driver;
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static int usb_w90x900_probe(const struct hc_driver *driver,
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struct platform_device *pdev)
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{
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@ -90,8 +105,8 @@ err1:
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return retval;
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}
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static
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void usb_w90x900_remove(struct usb_hcd *hcd, struct platform_device *pdev)
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static void usb_w90x900_remove(struct usb_hcd *hcd,
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struct platform_device *pdev)
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{
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usb_remove_hcd(hcd);
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iounmap(hcd->regs);
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@ -99,54 +114,6 @@ void usb_w90x900_remove(struct usb_hcd *hcd, struct platform_device *pdev)
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usb_put_hcd(hcd);
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}
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static const struct hc_driver ehci_w90x900_hc_driver = {
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.description = hcd_name,
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.product_desc = "Nuvoton w90x900 EHCI Host Controller",
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.hcd_priv_size = sizeof(struct ehci_hcd),
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/*
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* generic hardware linkage
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*/
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.irq = ehci_irq,
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.flags = HCD_USB2|HCD_MEMORY|HCD_BH,
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/*
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* basic lifecycle operations
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*/
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.reset = ehci_setup,
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.start = ehci_run,
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.stop = ehci_stop,
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.shutdown = ehci_shutdown,
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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 = ehci_urb_enqueue,
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.urb_dequeue = ehci_urb_dequeue,
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.endpoint_disable = ehci_endpoint_disable,
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.endpoint_reset = ehci_endpoint_reset,
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/*
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* scheduling support
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*/
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.get_frame_number = ehci_get_frame,
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/*
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* root hub support
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*/
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.hub_status_data = ehci_hub_status_data,
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.hub_control = ehci_hub_control,
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#ifdef CONFIG_PM
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.bus_suspend = ehci_bus_suspend,
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.bus_resume = ehci_bus_resume,
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#endif
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.relinquish_port = ehci_relinquish_port,
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.port_handed_over = ehci_port_handed_over,
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.clear_tt_buffer_complete = ehci_clear_tt_buffer_complete,
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};
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static int ehci_w90x900_probe(struct platform_device *pdev)
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{
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if (usb_disabled())
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@ -173,7 +140,25 @@ static struct platform_driver ehci_hcd_w90x900_driver = {
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},
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};
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static int __init ehci_w90X900_init(void)
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{
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if (usb_disabled())
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return -ENODEV;
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pr_info("%s: " DRIVER_DESC "\n", hcd_name);
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ehci_init_driver(&ehci_w90x900_hc_driver, NULL);
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return platform_driver_register(&ehci_hcd_w90x900_driver);
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}
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module_init(ehci_w90X900_init);
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static void __exit ehci_w90X900_cleanup(void)
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{
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platform_driver_unregister(&ehci_hcd_w90x900_driver);
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}
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module_exit(ehci_w90X900_cleanup);
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MODULE_DESCRIPTION(DRIVER_DESC);
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MODULE_AUTHOR("Wan ZongShun <mcuos.com@gmail.com>");
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MODULE_DESCRIPTION("w90p910 usb ehci driver!");
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MODULE_LICENSE("GPL");
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MODULE_ALIAS("platform:w90p910-ehci");
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MODULE_LICENSE("GPL v2");
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