Commit 29e409f0 authored by Andrew Bresticker's avatar Andrew Bresticker Committed by Greg Kroah-Hartman
Browse files

xhci: Allow xHCI drivers to be built as separate modules 



Instead of building all of the xHCI code into a single module, separate
it out into the core (xhci-hcd), PCI (xhci-pci, now selected by the new
config option CONFIG_USB_XHCI_PCI), and platform (xhci-plat) drivers.
Also update the PCI/platform drivers with module descriptions/licenses
and have them register their respective drivers in their initcalls.

Signed-off-by: default avatarAndrew Bresticker <abrestic@chromium.org>
Signed-off-by: default avatarMathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 436e8c7d

drivers/usb/host/Kconfig

+5 −0
Original line number Diff line number Diff line
@@ -26,6 +26,11 @@ config USB_XHCI_HCD 


if USB_XHCI_HCD



config USB_XHCI_PCI

       tristate

       depends on PCI

       default y



config USB_XHCI_PLATFORM

	tristate

drivers/usb/host/Makefile

+6 −6
Original line number Diff line number Diff line
@@ -15,22 +15,22 @@ fhci-$(CONFIG_FHCI_DEBUG) += fhci-dbg.o 
xhci-hcd-y := xhci.o xhci-mem.o

xhci-hcd-y += xhci-ring.o xhci-hub.o xhci-dbg.o

xhci-hcd-y += xhci-trace.o

xhci-hcd-$(CONFIG_PCI)	+= xhci-pci.o



ifneq ($(CONFIG_USB_XHCI_PLATFORM), )

	xhci-hcd-y		+= xhci-plat.o

xhci-plat-hcd-y := xhci-plat.o

ifneq ($(CONFIG_USB_XHCI_MVEBU), )

	xhci-hcd-y		+= xhci-mvebu.o

	xhci-plat-hcd-y		+= xhci-mvebu.o

endif

ifneq ($(CONFIG_USB_XHCI_RCAR), )

	xhci-hcd-y		+= xhci-rcar.o

endif

	xhci-plat-hcd-y		+= xhci-rcar.o

endif



obj-$(CONFIG_USB_WHCI_HCD)	+= whci/



obj-$(CONFIG_PCI)		+= pci-quirks.o



obj-$(CONFIG_USB_XHCI_PCI)	+= xhci-pci.o

obj-$(CONFIG_USB_XHCI_PLATFORM) += xhci-plat-hcd.o



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

drivers/usb/host/xhci-pci.c

+7 −2
Original line number Diff line number Diff line
@@ -355,7 +355,7 @@ static struct pci_driver xhci_pci_driver = { 
#endif

};



int __init xhci_register_pci(void)

static int __init xhci_pci_init(void)

{

	xhci_init_driver(&xhci_pci_hc_driver, xhci_pci_setup);

#ifdef CONFIG_PM
@@ -364,8 +364,13 @@ int __init xhci_register_pci(void) 
#endif

	return pci_register_driver(&xhci_pci_driver);

}

module_init(xhci_pci_init);



void xhci_unregister_pci(void)

static void __exit xhci_pci_exit(void)

{

	pci_unregister_driver(&xhci_pci_driver);

}

module_exit(xhci_pci_exit);



MODULE_DESCRIPTION("xHCI PCI Host Controller Driver");

MODULE_LICENSE("GPL");

drivers/usb/host/xhci-plat.c

+7 −2
Original line number Diff line number Diff line
@@ -247,14 +247,19 @@ static struct platform_driver usb_xhci_driver = { 
};

MODULE_ALIAS("platform:xhci-hcd");



int xhci_register_plat(void)

static int __init xhci_plat_init(void)

{

	xhci_init_driver(&xhci_plat_hc_driver, xhci_plat_setup);

	xhci_plat_hc_driver.start = xhci_plat_start;

	return platform_driver_register(&usb_xhci_driver);

}

module_init(xhci_plat_init);



void xhci_unregister_plat(void)

static void __exit xhci_plat_exit(void)

{

	platform_driver_unregister(&usb_xhci_driver);

}

module_exit(xhci_plat_exit);



MODULE_DESCRIPTION("xHCI Platform Host Controller Driver");

MODULE_LICENSE("GPL");

drivers/usb/host/xhci.c

+0 −22
Original line number Diff line number Diff line
@@ -4982,18 +4982,6 @@ MODULE_LICENSE("GPL"); 


static int __init xhci_hcd_init(void)

{

	int retval;



	retval = xhci_register_pci();

	if (retval < 0) {

		pr_debug("Problem registering PCI driver.\n");

		return retval;

	}

	retval = xhci_register_plat();

	if (retval < 0) {

		pr_debug("Problem registering platform driver.\n");

		goto unreg_pci;

	}

	/*

	 * Check the compiler generated sizes of structures that must be laid

	 * out in specific ways for hardware access.
@@ -5012,15 +5000,5 @@ static int __init xhci_hcd_init(void) 
	/* xhci_run_regs has eight fields and embeds 128 xhci_intr_regs */

	BUILD_BUG_ON(sizeof(struct xhci_run_regs) != (8+8*128)*32/8);

	return 0;

unreg_pci:

	xhci_unregister_pci();

	return retval;

}

module_init(xhci_hcd_init);
 


static void __exit xhci_hcd_cleanup(void)

{

	xhci_unregister_pci();

	xhci_unregister_plat();

}

module_exit(xhci_hcd_cleanup);

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