drivers:usb:fsl:Make fsl ehci drv an independent driver module
Make Freescale EHCI driver an independent entity from ehci-hcd.c. This involves - using module_init/module_exit functions - using overrides structure - some necessary code cleanup Signed-off-by: Ramneek Mehresh <ramneek.mehresh@freescale.com> Acked-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Ramneek Mehresh
Greg Kroah-Hartman
Родитель
909eacd748
Коммит
ca07e1c1e4
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@ -137,7 +137,7 @@ config XPS_USB_HCD_XILINX
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devices only.
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config USB_EHCI_FSL
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bool "Support for Freescale PPC on-chip EHCI USB controller"
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tristate "Support for Freescale PPC on-chip EHCI USB controller"
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depends on FSL_SOC
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select USB_EHCI_ROOT_HUB_TT
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select USB_FSL_MPH_DR_OF if OF
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@ -72,6 +72,7 @@ obj-$(CONFIG_USB_R8A66597_HCD) += r8a66597-hcd.o
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obj-$(CONFIG_USB_HWA_HCD) += hwa-hc.o
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obj-$(CONFIG_USB_IMX21_HCD) += imx21-hcd.o
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obj-$(CONFIG_USB_FSL_MPH_DR_OF) += fsl-mph-dr-of.o
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obj-$(CONFIG_USB_EHCI_FSL) += ehci-fsl.o
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obj-$(CONFIG_USB_HCD_BCMA) += bcma-hcd.o
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obj-$(CONFIG_USB_HCD_SSB) += ssb-hcd.o
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obj-$(CONFIG_USB_FUSBH200_HCD) += fusbh200-hcd.o
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@ -1,6 +1,6 @@
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/*
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* Copyright 2005-2009 MontaVista Software, Inc.
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* Copyright 2008,2012 Freescale Semiconductor, Inc.
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* Copyright 2008,2012,2015 Freescale Semiconductor, Inc.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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@ -24,29 +24,38 @@
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/types.h>
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#include <linux/delay.h>
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#include <linux/pm.h>
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#include <linux/err.h>
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#include <linux/usb.h>
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#include <linux/usb/ehci_def.h>
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#include <linux/usb/hcd.h>
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#include <linux/usb/otg.h>
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#include <linux/platform_device.h>
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#include <linux/fsl_devices.h>
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#include "ehci.h"
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#include "ehci-fsl.h"
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#define DRIVER_DESC "Freescale EHCI Host controller driver"
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#define DRV_NAME "ehci-fsl"
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static struct hc_driver __read_mostly fsl_ehci_hc_driver;
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/* configure so an HC device and id are always provided */
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/* always called with process context; sleeping is OK */
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/**
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* usb_hcd_fsl_probe - initialize FSL-based HCDs
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* @drvier: Driver to be used for this HCD
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/*
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* fsl_ehci_drv_probe - initialize FSL-based HCDs
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* @pdev: USB Host Controller being probed
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* Context: !in_interrupt()
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*
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* Allocates basic resources for this USB host controller.
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*
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*/
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static int usb_hcd_fsl_probe(const struct hc_driver *driver,
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struct platform_device *pdev)
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static int fsl_ehci_drv_probe(struct platform_device *pdev)
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{
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struct fsl_usb2_platform_data *pdata;
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struct usb_hcd *hcd;
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@ -86,7 +95,8 @@ static int usb_hcd_fsl_probe(const struct hc_driver *driver,
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}
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irq = res->start;
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hcd = usb_create_hcd(driver, &pdev->dev, dev_name(&pdev->dev));
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hcd = usb_create_hcd(&fsl_ehci_hc_driver, &pdev->dev,
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dev_name(&pdev->dev));
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if (!hcd) {
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retval = -ENOMEM;
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goto err1;
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@ -159,38 +169,6 @@ static int usb_hcd_fsl_probe(const struct hc_driver *driver,
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return retval;
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}
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/* may be called without controller electrically present */
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/* may be called with controller, bus, and devices active */
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/**
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* usb_hcd_fsl_remove - shutdown processing for FSL-based HCDs
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* @dev: USB Host Controller being removed
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* Context: !in_interrupt()
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*
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* Reverses the effect of usb_hcd_fsl_probe().
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*
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*/
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static void usb_hcd_fsl_remove(struct usb_hcd *hcd,
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struct platform_device *pdev)
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{
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struct fsl_usb2_platform_data *pdata = dev_get_platdata(&pdev->dev);
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if (!IS_ERR_OR_NULL(hcd->usb_phy)) {
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otg_set_host(hcd->usb_phy->otg, NULL);
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usb_put_phy(hcd->usb_phy);
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}
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usb_remove_hcd(hcd);
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/*
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* do platform specific un-initialization:
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* release iomux pins, disable clock, etc.
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*/
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if (pdata->exit)
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pdata->exit(pdev);
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usb_put_hcd(hcd);
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}
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static int ehci_fsl_setup_phy(struct usb_hcd *hcd,
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enum fsl_usb2_phy_modes phy_mode,
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unsigned int port_offset)
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@ -636,79 +614,77 @@ static int ehci_start_port_reset(struct usb_hcd *hcd, unsigned port)
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#define ehci_start_port_reset NULL
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#endif /* CONFIG_USB_OTG */
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static const struct hc_driver ehci_fsl_hc_driver = {
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.description = hcd_name,
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.product_desc = "Freescale On-Chip EHCI Host Controller",
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.hcd_priv_size = sizeof(struct ehci_fsl),
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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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static struct ehci_driver_overrides ehci_fsl_overrides __initdata = {
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.extra_priv_size = sizeof(struct ehci_fsl),
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.reset = ehci_fsl_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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.bus_suspend = ehci_bus_suspend,
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.bus_resume = ehci_bus_resume,
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.start_port_reset = ehci_start_port_reset,
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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_fsl_drv_probe(struct platform_device *pdev)
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{
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if (usb_disabled())
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return -ENODEV;
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/**
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* fsl_ehci_drv_remove - shutdown processing for FSL-based HCDs
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* @dev: USB Host Controller being removed
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* Context: !in_interrupt()
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*
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* Reverses the effect of usb_hcd_fsl_probe().
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*
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*/
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/* FIXME we only want one one probe() not two */
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return usb_hcd_fsl_probe(&ehci_fsl_hc_driver, pdev);
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}
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static int ehci_fsl_drv_remove(struct platform_device *pdev)
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static int fsl_ehci_drv_remove(struct platform_device *pdev)
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{
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struct fsl_usb2_platform_data *pdata = dev_get_platdata(&pdev->dev);
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struct usb_hcd *hcd = platform_get_drvdata(pdev);
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/* FIXME we only want one one remove() not two */
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usb_hcd_fsl_remove(hcd, pdev);
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if (!IS_ERR_OR_NULL(hcd->usb_phy)) {
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otg_set_host(hcd->usb_phy->otg, NULL);
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usb_put_phy(hcd->usb_phy);
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}
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usb_remove_hcd(hcd);
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/*
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* do platform specific un-initialization:
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* release iomux pins, disable clock, etc.
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*/
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if (pdata->exit)
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pdata->exit(pdev);
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usb_put_hcd(hcd);
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return 0;
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}
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MODULE_ALIAS("platform:fsl-ehci");
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static struct platform_driver ehci_fsl_driver = {
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.probe = ehci_fsl_drv_probe,
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.remove = ehci_fsl_drv_remove,
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.probe = fsl_ehci_drv_probe,
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.remove = fsl_ehci_drv_remove,
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.shutdown = usb_hcd_platform_shutdown,
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.driver = {
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.name = "fsl-ehci",
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.pm = EHCI_FSL_PM_OPS,
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},
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};
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static int __init ehci_fsl_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(DRV_NAME ": " DRIVER_DESC "\n");
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ehci_init_driver(&fsl_ehci_hc_driver, &ehci_fsl_overrides);
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fsl_ehci_hc_driver.product_desc =
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"Freescale On-Chip EHCI Host Controller";
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fsl_ehci_hc_driver.start_port_reset = ehci_start_port_reset;
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return platform_driver_register(&ehci_fsl_driver);
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}
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module_init(ehci_fsl_init);
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static void __exit ehci_fsl_cleanup(void)
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{
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platform_driver_unregister(&ehci_fsl_driver);
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}
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module_exit(ehci_fsl_cleanup);
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MODULE_DESCRIPTION(DRIVER_DESC);
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MODULE_LICENSE("GPL");
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MODULE_ALIAS("platform:" DRV_NAME);
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@ -1250,11 +1250,6 @@ MODULE_DESCRIPTION(DRIVER_DESC);
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MODULE_AUTHOR (DRIVER_AUTHOR);
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MODULE_LICENSE ("GPL");
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#ifdef CONFIG_USB_EHCI_FSL
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#include "ehci-fsl.c"
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#define PLATFORM_DRIVER ehci_fsl_driver
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#endif
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#ifdef CONFIG_USB_EHCI_SH
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#include "ehci-sh.c"
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#define PLATFORM_DRIVER ehci_hcd_sh_driver
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