Commit f7e7aa58 authored by Catalin Marinas's avatar Catalin Marinas Committed by Greg Kroah-Hartman
Browse files

USB: Add platform device support for the ISP1760 USB chip 



Currently, the driver only supports PCI and PPC_OF but there are
boards like ARM RealView where this is a platform device. The patch adds
the necessary functions and registration to the isp1760-if.c file and
modifies the corresponding Makefile and Kconfig to be able to use this
driver even if PCI and PPC_OF are not enabled.

Signed-off-by: default avatarCatalin Marinas <catalin.marinas@arm.com>
Cc: Sebastian Siewior <bigeasy@linutronix.de>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent f9031f2c

drivers/usb/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -19,6 +19,7 @@ obj-$(CONFIG_USB_SL811_HCD) += host/ 
obj-$(CONFIG_USB_U132_HCD)	+= host/

obj-$(CONFIG_USB_R8A66597_HCD)	+= host/

obj-$(CONFIG_USB_HWA_HCD)	+= host/

obj-$(CONFIG_USB_ISP1760_HCD)	+= host/



obj-$(CONFIG_USB_C67X00_HCD)	+= c67x00/

drivers/usb/host/Kconfig

+1 −1
Original line number Diff line number Diff line
@@ -120,7 +120,7 @@ config USB_ISP116X_HCD 


config USB_ISP1760_HCD

	tristate "ISP 1760 HCD support"

	depends on USB && EXPERIMENTAL && (PCI || PPC_OF)

	depends on USB && EXPERIMENTAL

	---help---

	  The ISP1760 chip is a USB 2.0 host controller.

drivers/usb/host/isp1760-if.c

+79 −16
Original line number Diff line number Diff line
@@ -10,6 +10,7 @@ 


#include <linux/usb.h>

#include <linux/io.h>

#include <linux/platform_device.h>



#include "../core/hcd.h"

#include "isp1760-hcd.h"
@@ -300,39 +301,101 @@ static struct pci_driver isp1761_pci_driver = { 
};

#endif



static int __devinit isp1760_plat_probe(struct platform_device *pdev)

{

	int ret = 0;

	struct usb_hcd *hcd;

	struct resource *mem_res;

	struct resource *irq_res;

	resource_size_t mem_size;

	unsigned long irqflags = IRQF_SHARED | IRQF_DISABLED;



	mem_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);

	if (!mem_res) {

		pr_warning("isp1760: Memory resource not available\n");

		ret = -ENODEV;

		goto out;

	}

	mem_size = resource_size(mem_res);

	if (!request_mem_region(mem_res->start, mem_size, "isp1760")) {

		pr_warning("isp1760: Cannot reserve the memory resource\n");

		ret = -EBUSY;

		goto out;

	}



	irq_res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);

	if (!irq_res) {

		pr_warning("isp1760: IRQ resource not available\n");

		return -ENODEV;

	}

	irqflags |= irq_res->flags & IRQF_TRIGGER_MASK;



	hcd = isp1760_register(mem_res->start, mem_size, irq_res->start,

			       irqflags, &pdev->dev, dev_name(&pdev->dev), 0);

	if (IS_ERR(hcd)) {

		pr_warning("isp1760: Failed to register the HCD device\n");

		ret = -ENODEV;

		goto cleanup;

	}



	pr_info("ISP1760 USB device initialised\n");

	return ret;



cleanup:

	release_mem_region(mem_res->start, mem_size);

out:

	return ret;

}



static int __devexit isp1760_plat_remove(struct platform_device *pdev)

{

	struct resource *mem_res;

	resource_size_t mem_size;



	mem_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);

	mem_size = resource_size(mem_res);

	release_mem_region(mem_res->start, mem_size);



	return 0;

}



static struct platform_driver isp1760_plat_driver = {

	.probe	= isp1760_plat_probe,

	.remove	= isp1760_plat_remove,

	.driver	= {

		.name	= "isp1760",

	},

};



static int __init isp1760_init(void)

{

	int ret;

	int ret, any_ret = -ENODEV;



	init_kmem_once();



	ret = platform_driver_register(&isp1760_plat_driver);

	if (!ret)

		any_ret = 0;

#ifdef CONFIG_PPC_OF

	ret = of_register_platform_driver(&isp1760_of_driver);

	if (ret) {

		deinit_kmem_cache();

		return ret;

	}

	if (!ret)

		any_ret = 0;

#endif

#ifdef CONFIG_PCI

	ret = pci_register_driver(&isp1761_pci_driver);

	if (ret)

		goto unreg_of;

	if (!ret)

		any_ret = 0;

#endif

	return ret;



#ifdef CONFIG_PCI

unreg_of:

#endif

#ifdef CONFIG_PPC_OF

	of_unregister_platform_driver(&isp1760_of_driver);

#endif

	if (any_ret)

		deinit_kmem_cache();

	return ret;

	return any_ret;

}

module_init(isp1760_init);



static void __exit isp1760_exit(void)

{

	platform_driver_unregister(&isp1760_plat_driver);

#ifdef CONFIG_PPC_OF

	of_unregister_platform_driver(&isp1760_of_driver);

#endif

CRA Git | Maintained and supported by SUSTech CRA and CCSE