[deliverable/linux.git] / drivers / usb / host / isp1760-if.c

/*
 * Glue code for the ISP1760 driver and bus
 * Currently there is support for
 * - OpenFirmware
 * - PCI
 * - PDEV (generic platform device centralized driver model)
 *
 * (c) 2007 Sebastian Siewior <bigeasy@linutronix.de>
 *
 */

#include <linux/usb.h>
#include <linux/io.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/usb/isp1760.h>
#include <linux/usb/hcd.h>

#include "isp1760-hcd.h"

#if defined(CONFIG_OF) && defined(CONFIG_OF_IRQ)
#include <linux/slab.h>
#include <linux/of.h>
#include <linux/of_platform.h>
#include <linux/of_address.h>
#include <linux/of_irq.h>
#include <linux/of_gpio.h>
#endif

#ifdef CONFIG_PCI
#include <linux/pci.h>
#endif

#if defined(CONFIG_OF) && defined(CONFIG_OF_IRQ)
struct isp1760 {
	struct usb_hcd *hcd;
	int rst_gpio;
};

static int of_isp1760_probe(struct platform_device *dev)
{
	struct isp1760 *drvdata;
	struct device_node *dp = dev->dev.of_node;
	struct resource *res;
	struct resource memory;
	struct of_irq oirq;
	int virq;
	resource_size_t res_len;
	int ret;
	unsigned int devflags = 0;
	enum of_gpio_flags gpio_flags;
	u32 bus_width = 0;

	drvdata = kzalloc(sizeof(*drvdata), GFP_KERNEL);
	if (!drvdata)
		return -ENOMEM;

	ret = of_address_to_resource(dp, 0, &memory);
	if (ret) {
		ret = -ENXIO;
		goto free_data;
	}

	res_len = resource_size(&memory);

	res = request_mem_region(memory.start, res_len, dev_name(&dev->dev));
	if (!res) {
		ret = -EBUSY;
		goto free_data;
	}

	if (of_irq_map_one(dp, 0, &oirq)) {
		ret = -ENODEV;
		goto release_reg;
	}

	virq = irq_create_of_mapping(oirq.controller, oirq.specifier,
			oirq.size);

	if (of_device_is_compatible(dp, "nxp,usb-isp1761"))
		devflags |= ISP1760_FLAG_ISP1761;

	/* Some systems wire up only 16 of the 32 data lines */
	of_property_read_u32(dp, "bus-width", &bus_width);
	if (bus_width == 16)
		devflags |= ISP1760_FLAG_BUS_WIDTH_16;

	if (of_get_property(dp, "port1-otg", NULL) != NULL)
		devflags |= ISP1760_FLAG_OTG_EN;

	if (of_get_property(dp, "analog-oc", NULL) != NULL)
		devflags |= ISP1760_FLAG_ANALOG_OC;

	if (of_get_property(dp, "dack-polarity", NULL) != NULL)
		devflags |= ISP1760_FLAG_DACK_POL_HIGH;

	if (of_get_property(dp, "dreq-polarity", NULL) != NULL)
		devflags |= ISP1760_FLAG_DREQ_POL_HIGH;

	drvdata->rst_gpio = of_get_gpio_flags(dp, 0, &gpio_flags);
	if (gpio_is_valid(drvdata->rst_gpio)) {
		ret = gpio_request(drvdata->rst_gpio, dev_name(&dev->dev));
		if (!ret) {
			if (!(gpio_flags & OF_GPIO_ACTIVE_LOW)) {
				devflags |= ISP1760_FLAG_RESET_ACTIVE_HIGH;
				gpio_direction_output(drvdata->rst_gpio, 0);
			} else {
				gpio_direction_output(drvdata->rst_gpio, 1);
			}
		} else {
			drvdata->rst_gpio = ret;
		}
	}

	drvdata->hcd = isp1760_register(memory.start, res_len, virq,
					IRQF_SHARED, drvdata->rst_gpio,
					&dev->dev, dev_name(&dev->dev),
					devflags);
	if (IS_ERR(drvdata->hcd)) {
		ret = PTR_ERR(drvdata->hcd);
		goto free_gpio;
	}

	dev_set_drvdata(&dev->dev, drvdata);
	return ret;

free_gpio:
	if (gpio_is_valid(drvdata->rst_gpio))
		gpio_free(drvdata->rst_gpio);
release_reg:
	release_mem_region(memory.start, res_len);
free_data:
	kfree(drvdata);
	return ret;
}

static int of_isp1760_remove(struct platform_device *dev)
{
	struct isp1760 *drvdata = dev_get_drvdata(&dev->dev);

	dev_set_drvdata(&dev->dev, NULL);

	usb_remove_hcd(drvdata->hcd);
	iounmap(drvdata->hcd->regs);
	release_mem_region(drvdata->hcd->rsrc_start, drvdata->hcd->rsrc_len);
	usb_put_hcd(drvdata->hcd);

	if (gpio_is_valid(drvdata->rst_gpio))
		gpio_free(drvdata->rst_gpio);

	kfree(drvdata);
	return 0;
}

static const struct of_device_id of_isp1760_match[] = {
	{
		.compatible = "nxp,usb-isp1760",
	},
	{
		.compatible = "nxp,usb-isp1761",
	},
	{ },
};
MODULE_DEVICE_TABLE(of, of_isp1760_match);

static struct platform_driver isp1760_of_driver = {
	.driver = {
		.name = "nxp-isp1760",
		.owner = THIS_MODULE,
		.of_match_table = of_isp1760_match,
	},
	.probe          = of_isp1760_probe,
	.remove         = of_isp1760_remove,
};
#endif

#ifdef CONFIG_PCI
static int __devinit isp1761_pci_probe(struct pci_dev *dev,
		const struct pci_device_id *id)
{
	u8 latency, limit;
	__u32 reg_data;
	int retry_count;
	struct usb_hcd *hcd;
	unsigned int devflags = 0;
	int ret_status = 0;

	resource_size_t pci_mem_phy0;
	resource_size_t memlength;

	u8 __iomem *chip_addr;
	u8 __iomem *iobase;
	resource_size_t nxp_pci_io_base;
	resource_size_t iolength;

	if (usb_disabled())
		return -ENODEV;

	if (pci_enable_device(dev) < 0)
		return -ENODEV;

	if (!dev->irq)
		return -ENODEV;

	/* Grab the PLX PCI mem maped port start address we need  */
	nxp_pci_io_base = pci_resource_start(dev, 0);
	iolength = pci_resource_len(dev, 0);

	if (!request_mem_region(nxp_pci_io_base, iolength, "ISP1761 IO MEM")) {
		printk(KERN_ERR "request region #1\n");
		return -EBUSY;
	}

	iobase = ioremap_nocache(nxp_pci_io_base, iolength);
	if (!iobase) {
		printk(KERN_ERR "ioremap #1\n");
		ret_status = -ENOMEM;
		goto cleanup1;
	}
	/* Grab the PLX PCI shared memory of the ISP 1761 we need  */
	pci_mem_phy0 = pci_resource_start(dev, 3);
	memlength = pci_resource_len(dev, 3);
	if (memlength < 0xffff) {
		printk(KERN_ERR "memory length for this resource is wrong\n");
		ret_status = -ENOMEM;
		goto cleanup2;
	}

	if (!request_mem_region(pci_mem_phy0, memlength, "ISP-PCI")) {
		printk(KERN_ERR "host controller already in use\n");
		ret_status = -EBUSY;
		goto cleanup2;
	}

	/* map available memory */
	chip_addr = ioremap_nocache(pci_mem_phy0,memlength);
	if (!chip_addr) {
		printk(KERN_ERR "Error ioremap failed\n");
		ret_status = -ENOMEM;
		goto cleanup3;
	}

	/* bad pci latencies can contribute to overruns */
	pci_read_config_byte(dev, PCI_LATENCY_TIMER, &latency);
	if (latency) {
		pci_read_config_byte(dev, PCI_MAX_LAT, &limit);
		if (limit && limit < latency)
			pci_write_config_byte(dev, PCI_LATENCY_TIMER, limit);
	}

	/* Try to check whether we can access Scratch Register of
	 * Host Controller or not. The initial PCI access is retried until
	 * local init for the PCI bridge is completed
	 */
	retry_count = 20;
	reg_data = 0;
	while ((reg_data != 0xFACE) && retry_count) {
		/*by default host is in 16bit mode, so
		 * io operations at this stage must be 16 bit
		 * */
		writel(0xface, chip_addr + HC_SCRATCH_REG);
		udelay(100);
		reg_data = readl(chip_addr + HC_SCRATCH_REG) & 0x0000ffff;
		retry_count--;
	}

	iounmap(chip_addr);

	/* Host Controller presence is detected by writing to scratch register
	 * and reading back and checking the contents are same or not
	 */
	if (reg_data != 0xFACE) {
		dev_err(&dev->dev, "scratch register mismatch %x\n", reg_data);
		ret_status = -ENOMEM;
		goto cleanup3;
	}

	pci_set_master(dev);

	/* configure PLX PCI chip to pass interrupts */
#define PLX_INT_CSR_REG 0x68
	reg_data = readl(iobase + PLX_INT_CSR_REG);
	reg_data |= 0x900;
	writel(reg_data, iobase + PLX_INT_CSR_REG);

	dev->dev.dma_mask = NULL;
	hcd = isp1760_register(pci_mem_phy0, memlength, dev->irq,
		IRQF_SHARED, -ENOENT, &dev->dev, dev_name(&dev->dev),
		devflags);
	if (IS_ERR(hcd)) {
		ret_status = -ENODEV;
		goto cleanup3;
	}

	/* done with PLX IO access */
	iounmap(iobase);
	release_mem_region(nxp_pci_io_base, iolength);

	pci_set_drvdata(dev, hcd);
	return 0;

cleanup3:
	release_mem_region(pci_mem_phy0, memlength);
cleanup2:
	iounmap(iobase);
cleanup1:
	release_mem_region(nxp_pci_io_base, iolength);
	return ret_status;
}

static void isp1761_pci_remove(struct pci_dev *dev)
{
	struct usb_hcd *hcd;

	hcd = pci_get_drvdata(dev);

	usb_remove_hcd(hcd);
	iounmap(hcd->regs);
	release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
	usb_put_hcd(hcd);

	pci_disable_device(dev);
}

static void isp1761_pci_shutdown(struct pci_dev *dev)
{
	printk(KERN_ERR "ips1761_pci_shutdown\n");
}

static const struct pci_device_id isp1760_plx [] = {
	{
		.class          = PCI_CLASS_BRIDGE_OTHER << 8,
		.class_mask     = ~0,
		.vendor		= PCI_VENDOR_ID_PLX,
		.device		= 0x5406,
		.subvendor	= PCI_VENDOR_ID_PLX,
		.subdevice	= 0x9054,
	},
	{ }
};
MODULE_DEVICE_TABLE(pci, isp1760_plx);

static struct pci_driver isp1761_pci_driver = {
	.name =         "isp1760",
	.id_table =     isp1760_plx,
	.probe =        isp1761_pci_probe,
	.remove =       isp1761_pci_remove,
	.shutdown =     isp1761_pci_shutdown,
};
#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;
	struct isp1760_platform_data *priv = pdev->dev.platform_data;
	unsigned int devflags = 0;
	unsigned long irqflags = IRQF_SHARED;

	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;

	if (priv) {
		if (priv->is_isp1761)
			devflags |= ISP1760_FLAG_ISP1761;
		if (priv->bus_width_16)
			devflags |= ISP1760_FLAG_BUS_WIDTH_16;
		if (priv->port1_otg)
			devflags |= ISP1760_FLAG_OTG_EN;
		if (priv->analog_oc)
			devflags |= ISP1760_FLAG_ANALOG_OC;
		if (priv->dack_polarity_high)
			devflags |= ISP1760_FLAG_DACK_POL_HIGH;
		if (priv->dreq_polarity_high)
			devflags |= ISP1760_FLAG_DREQ_POL_HIGH;
	}

	hcd = isp1760_register(mem_res->start, mem_size, irq_res->start,
			       irqflags, -ENOENT,
			       &pdev->dev, dev_name(&pdev->dev), devflags);

	dev_set_drvdata(&pdev->dev, hcd);

	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;
	struct usb_hcd *hcd = dev_get_drvdata(&pdev->dev);

	usb_remove_hcd(hcd);

	mem_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	mem_size = resource_size(mem_res);
	release_mem_region(mem_res->start, mem_size);

	usb_put_hcd(hcd);

	return 0;
}

static struct platform_driver isp1760_plat_driver = {
	.probe	= isp1760_plat_probe,
	.remove	= __devexit_p(isp1760_plat_remove),
	.driver	= {
		.name	= "isp1760",
	},
};

static int __init isp1760_init(void)
{
	int ret, any_ret = -ENODEV;

	init_kmem_once();

	ret = platform_driver_register(&isp1760_plat_driver);
	if (!ret)
		any_ret = 0;
#if defined(CONFIG_OF) && defined(CONFIG_OF_IRQ)
	ret = platform_driver_register(&isp1760_of_driver);
	if (!ret)
		any_ret = 0;
#endif
#ifdef CONFIG_PCI
	ret = pci_register_driver(&isp1761_pci_driver);
	if (!ret)
		any_ret = 0;
#endif

	if (any_ret)
		deinit_kmem_cache();
	return any_ret;
}
module_init(isp1760_init);

static void __exit isp1760_exit(void)
{
	platform_driver_unregister(&isp1760_plat_driver);
#if defined(CONFIG_OF) && defined(CONFIG_OF_IRQ)
	platform_driver_unregister(&isp1760_of_driver);
#endif
#ifdef CONFIG_PCI
	pci_unregister_driver(&isp1761_pci_driver);
#endif
	deinit_kmem_cache();
}
module_exit(isp1760_exit);
Commit	Line	Data
db11e47d SS	1	/*
	2	* Glue code for the ISP1760 driver and bus
	3	* Currently there is support for
	4	* - OpenFirmware
	5	* - PCI
9da69c60	6	* - PDEV (generic platform device centralized driver model)
db11e47d SS	7	*
	8	* (c) 2007 Sebastian Siewior <bigeasy@linutronix.de>
	9	*
	10	*/
	11
	12	#include <linux/usb.h>
	13	#include <linux/io.h>
6eb0de82	14	#include <linux/module.h>
f7e7aa58	15	#include <linux/platform_device.h>
9da69c60	16	#include <linux/usb/isp1760.h>
27729aad	17	#include <linux/usb/hcd.h>
db11e47d	18
db11e47d SS	19	#include "isp1760-hcd.h"
db11e47d SS	20
abf058e1	21	#if defined(CONFIG_OF) && defined(CONFIG_OF_IRQ)
3a7655fc	22	#include <linux/slab.h>
db11e47d SS	23	#include <linux/of.h>
db11e47d SS	24	#include <linux/of_platform.h>
8f5d6215 JF	25	#include <linux/of_address.h>
8f5d6215 JF	26	#include <linux/of_irq.h>
3a7655fc	27	#include <linux/of_gpio.h>
db11e47d SS	28	#endif
db11e47d SS	29
ff30bf1c	30	#ifdef CONFIG_PCI
db11e47d SS	31	#include <linux/pci.h>
	32	#endif
	33
abf058e1	34	#if defined(CONFIG_OF) && defined(CONFIG_OF_IRQ)
3a7655fc JF	35	struct isp1760 {
	36	struct usb_hcd *hcd;
	37	int rst_gpio;
	38	};
	39
d35fb641	40	static int of_isp1760_probe(struct platform_device *dev)
db11e47d	41	{
3a7655fc	42	struct isp1760 *drvdata;
61c7a080	43	struct device_node *dp = dev->dev.of_node;
db11e47d SS	44	struct resource *res;
	45	struct resource memory;
	46	struct of_irq oirq;
	47	int virq;
e07afd3f	48	resource_size_t res_len;
db11e47d	49	int ret;
3faefc88	50	unsigned int devflags = 0;
3a7655fc	51	enum of_gpio_flags gpio_flags;
8ad028bd	52	u32 bus_width = 0;
3a7655fc JF	53
	54	drvdata = kzalloc(sizeof(*drvdata), GFP_KERNEL);
	55	if (!drvdata)
	56	return -ENOMEM;
db11e47d SS	57
db11e47d SS	58	ret = of_address_to_resource(dp, 0, &memory);
30a0dee7 JL	59	if (ret) {
	60	ret = -ENXIO;
	61	goto free_data;
	62	}
db11e47d	63
e07afd3f TK	64	res_len = resource_size(&memory);
	65
	66	res = request_mem_region(memory.start, res_len, dev_name(&dev->dev));
30a0dee7 JL	67	if (!res) {
	68	ret = -EBUSY;
	69	goto free_data;
	70	}
db11e47d	71
db11e47d SS	72	if (of_irq_map_one(dp, 0, &oirq)) {
	73	ret = -ENODEV;
	74	goto release_reg;
	75	}
	76
	77	virq = irq_create_of_mapping(oirq.controller, oirq.specifier,
	78	oirq.size);
	79
3faefc88 NC	80	if (of_device_is_compatible(dp, "nxp,usb-isp1761"))
	81	devflags \|= ISP1760_FLAG_ISP1761;
	82
3faefc88	83	/* Some systems wire up only 16 of the 32 data lines */
8ad028bd DM	84	of_property_read_u32(dp, "bus-width", &bus_width);
8ad028bd DM	85	if (bus_width == 16)
3faefc88 NC	86	devflags \|= ISP1760_FLAG_BUS_WIDTH_16;
	87
	88	if (of_get_property(dp, "port1-otg", NULL) != NULL)
	89	devflags \|= ISP1760_FLAG_OTG_EN;
	90
	91	if (of_get_property(dp, "analog-oc", NULL) != NULL)
	92	devflags \|= ISP1760_FLAG_ANALOG_OC;
	93
	94	if (of_get_property(dp, "dack-polarity", NULL) != NULL)
	95	devflags \|= ISP1760_FLAG_DACK_POL_HIGH;
	96
	97	if (of_get_property(dp, "dreq-polarity", NULL) != NULL)
	98	devflags \|= ISP1760_FLAG_DREQ_POL_HIGH;
	99
3a7655fc JF	100	drvdata->rst_gpio = of_get_gpio_flags(dp, 0, &gpio_flags);
	101	if (gpio_is_valid(drvdata->rst_gpio)) {
	102	ret = gpio_request(drvdata->rst_gpio, dev_name(&dev->dev));
	103	if (!ret) {
	104	if (!(gpio_flags & OF_GPIO_ACTIVE_LOW)) {
	105	devflags \|= ISP1760_FLAG_RESET_ACTIVE_HIGH;
	106	gpio_direction_output(drvdata->rst_gpio, 0);
	107	} else {
	108	gpio_direction_output(drvdata->rst_gpio, 1);
	109	}
	110	} else {
	111	drvdata->rst_gpio = ret;
	112	}
db11e47d SS	113	}
db11e47d SS	114
3a7655fc JF	115	drvdata->hcd = isp1760_register(memory.start, res_len, virq,
	116	IRQF_SHARED, drvdata->rst_gpio,
	117	&dev->dev, dev_name(&dev->dev),
	118	devflags);
	119	if (IS_ERR(drvdata->hcd)) {
	120	ret = PTR_ERR(drvdata->hcd);
	121	goto free_gpio;
	122	}
	123
	124	dev_set_drvdata(&dev->dev, drvdata);
db11e47d SS	125	return ret;
db11e47d SS	126
3a7655fc JF	127	free_gpio:
	128	if (gpio_is_valid(drvdata->rst_gpio))
	129	gpio_free(drvdata->rst_gpio);
db11e47d	130	release_reg:
e07afd3f	131	release_mem_region(memory.start, res_len);
30a0dee7	132	free_data:
3a7655fc	133	kfree(drvdata);
db11e47d SS	134	return ret;
	135	}
	136
2dc11581	137	static int of_isp1760_remove(struct platform_device *dev)
db11e47d	138	{
3a7655fc	139	struct isp1760 *drvdata = dev_get_drvdata(&dev->dev);
db11e47d SS	140
	141	dev_set_drvdata(&dev->dev, NULL);
	142
3a7655fc JF	143	usb_remove_hcd(drvdata->hcd);
	144	iounmap(drvdata->hcd->regs);
	145	release_mem_region(drvdata->hcd->rsrc_start, drvdata->hcd->rsrc_len);
	146	usb_put_hcd(drvdata->hcd);
	147
	148	if (gpio_is_valid(drvdata->rst_gpio))
	149	gpio_free(drvdata->rst_gpio);
	150
	151	kfree(drvdata);
db11e47d SS	152	return 0;
	153	}
	154
c4386ad0	155	static const struct of_device_id of_isp1760_match[] = {
db11e47d SS	156	{
	157	.compatible = "nxp,usb-isp1760",
	158	},
3faefc88 NC	159	{
	160	.compatible = "nxp,usb-isp1761",
	161	},
db11e47d SS	162	{ },
	163	};
	164	MODULE_DEVICE_TABLE(of, of_isp1760_match);
	165
d35fb641	166	static struct platform_driver isp1760_of_driver = {
4018294b GL	167	.driver = {
	168	.name = "nxp-isp1760",
	169	.owner = THIS_MODULE,
	170	.of_match_table = of_isp1760_match,
	171	},
db11e47d SS	172	.probe = of_isp1760_probe,
	173	.remove = of_isp1760_remove,
	174	};
	175	#endif
	176
ff30bf1c	177	#ifdef CONFIG_PCI
db11e47d SS	178	static int __devinit isp1761_pci_probe(struct pci_dev *dev,
	179	const struct pci_device_id *id)
	180	{
	181	u8 latency, limit;
	182	__u32 reg_data;
	183	int retry_count;
db11e47d	184	struct usb_hcd *hcd;
3faefc88	185	unsigned int devflags = 0;
6013bbba KB	186	int ret_status = 0;
	187
	188	resource_size_t pci_mem_phy0;
	189	resource_size_t memlength;
	190
	191	u8 __iomem *chip_addr;
	192	u8 __iomem *iobase;
	193	resource_size_t nxp_pci_io_base;
	194	resource_size_t iolength;
db11e47d SS	195
	196	if (usb_disabled())
	197	return -ENODEV;
	198
	199	if (pci_enable_device(dev) < 0)
	200	return -ENODEV;
	201
	202	if (!dev->irq)
	203	return -ENODEV;
	204
	205	/* Grab the PLX PCI mem maped port start address we need */
	206	nxp_pci_io_base = pci_resource_start(dev, 0);
	207	iolength = pci_resource_len(dev, 0);
	208
	209	if (!request_mem_region(nxp_pci_io_base, iolength, "ISP1761 IO MEM")) {
	210	printk(KERN_ERR "request region #1\n");
	211	return -EBUSY;
	212	}
	213
	214	iobase = ioremap_nocache(nxp_pci_io_base, iolength);
	215	if (!iobase) {
	216	printk(KERN_ERR "ioremap #1\n");
6013bbba KB	217	ret_status = -ENOMEM;
6013bbba KB	218	goto cleanup1;
db11e47d SS	219	}
	220	/* Grab the PLX PCI shared memory of the ISP 1761 we need */
	221	pci_mem_phy0 = pci_resource_start(dev, 3);
6013bbba KB	222	memlength = pci_resource_len(dev, 3);
	223	if (memlength < 0xffff) {
	224	printk(KERN_ERR "memory length for this resource is wrong\n");
	225	ret_status = -ENOMEM;
	226	goto cleanup2;
db11e47d SS	227	}
db11e47d SS	228
6013bbba	229	if (!request_mem_region(pci_mem_phy0, memlength, "ISP-PCI")) {
db11e47d	230	printk(KERN_ERR "host controller already in use\n");
6013bbba KB	231	ret_status = -EBUSY;
	232	goto cleanup2;
	233	}
	234
	235	/* map available memory */
	236	chip_addr = ioremap_nocache(pci_mem_phy0,memlength);
	237	if (!chip_addr) {
	238	printk(KERN_ERR "Error ioremap failed\n");
	239	ret_status = -ENOMEM;
	240	goto cleanup3;
db11e47d SS	241	}
	242
	243	/* bad pci latencies can contribute to overruns */
	244	pci_read_config_byte(dev, PCI_LATENCY_TIMER, &latency);
	245	if (latency) {
	246	pci_read_config_byte(dev, PCI_MAX_LAT, &limit);
	247	if (limit && limit < latency)
	248	pci_write_config_byte(dev, PCI_LATENCY_TIMER, limit);
	249	}
	250
	251	/* Try to check whether we can access Scratch Register of
	252	* Host Controller or not. The initial PCI access is retried until
	253	* local init for the PCI bridge is completed
	254	*/
	255	retry_count = 20;
	256	reg_data = 0;
	257	while ((reg_data != 0xFACE) && retry_count) {
	258	/*by default host is in 16bit mode, so
	259	* io operations at this stage must be 16 bit
	260	* */
	261	writel(0xface, chip_addr + HC_SCRATCH_REG);
	262	udelay(100);
6013bbba	263	reg_data = readl(chip_addr + HC_SCRATCH_REG) & 0x0000ffff;
db11e47d SS	264	retry_count--;
	265	}
	266
6013bbba KB	267	iounmap(chip_addr);
6013bbba KB	268
db11e47d SS	269	/* Host Controller presence is detected by writing to scratch register
	270	* and reading back and checking the contents are same or not
	271	*/
	272	if (reg_data != 0xFACE) {
802f389a	273	dev_err(&dev->dev, "scratch register mismatch %x\n", reg_data);
6013bbba KB	274	ret_status = -ENOMEM;
6013bbba KB	275	goto cleanup3;
db11e47d SS	276	}
	277
	278	pci_set_master(dev);
	279
6013bbba KB	280	/* configure PLX PCI chip to pass interrupts */
	281	#define PLX_INT_CSR_REG 0x68
	282	reg_data = readl(iobase + PLX_INT_CSR_REG);
	283	reg_data \|= 0x900;
	284	writel(reg_data, iobase + PLX_INT_CSR_REG);
db11e47d SS	285
db11e47d SS	286	dev->dev.dma_mask = NULL;
6013bbba	287	hcd = isp1760_register(pci_mem_phy0, memlength, dev->irq,
3a7655fc	288	IRQF_SHARED, -ENOENT, &dev->dev, dev_name(&dev->dev),
3faefc88	289	devflags);
6013bbba KB	290	if (IS_ERR(hcd)) {
	291	ret_status = -ENODEV;
	292	goto cleanup3;
ce5dee50	293	}
6013bbba KB	294
6013bbba KB	295	/* done with PLX IO access */
db11e47d	296	iounmap(iobase);
db11e47d	297	release_mem_region(nxp_pci_io_base, iolength);
6013bbba KB	298
	299	pci_set_drvdata(dev, hcd);
	300	return 0;
	301
	302	cleanup3:
	303	release_mem_region(pci_mem_phy0, memlength);
	304	cleanup2:
	305	iounmap(iobase);
	306	cleanup1:
	307	release_mem_region(nxp_pci_io_base, iolength);
	308	return ret_status;
db11e47d	309	}
6013bbba	310
db11e47d SS	311	static void isp1761_pci_remove(struct pci_dev *dev)
	312	{
	313	struct usb_hcd *hcd;
	314
	315	hcd = pci_get_drvdata(dev);
	316
	317	usb_remove_hcd(hcd);
	318	iounmap(hcd->regs);
	319	release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
	320	usb_put_hcd(hcd);
	321
	322	pci_disable_device(dev);
db11e47d SS	323	}
	324
	325	static void isp1761_pci_shutdown(struct pci_dev *dev)
	326	{
	327	printk(KERN_ERR "ips1761_pci_shutdown\n");
	328	}
	329
6c073568 SAS	330	static const struct pci_device_id isp1760_plx [] = {
	331	{
	332	.class = PCI_CLASS_BRIDGE_OTHER << 8,
	333	.class_mask = ~0,
	334	.vendor = PCI_VENDOR_ID_PLX,
	335	.device = 0x5406,
	336	.subvendor = PCI_VENDOR_ID_PLX,
	337	.subdevice = 0x9054,
	338	},
	339	{ }
db11e47d SS	340	};
	341	MODULE_DEVICE_TABLE(pci, isp1760_plx);
	342
	343	static struct pci_driver isp1761_pci_driver = {
	344	.name = "isp1760",
	345	.id_table = isp1760_plx,
	346	.probe = isp1761_pci_probe,
	347	.remove = isp1761_pci_remove,
	348	.shutdown = isp1761_pci_shutdown,
	349	};
	350	#endif
	351
f7e7aa58 CM	352	static int __devinit isp1760_plat_probe(struct platform_device *pdev)
	353	{
	354	int ret = 0;
	355	struct usb_hcd *hcd;
	356	struct resource *mem_res;
	357	struct resource *irq_res;
	358	resource_size_t mem_size;
9da69c60 MH	359	struct isp1760_platform_data *priv = pdev->dev.platform_data;
9da69c60 MH	360	unsigned int devflags = 0;
b5dd18d8	361	unsigned long irqflags = IRQF_SHARED;
f7e7aa58 CM	362
	363	mem_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	364	if (!mem_res) {
	365	pr_warning("isp1760: Memory resource not available\n");
	366	ret = -ENODEV;
	367	goto out;
	368	}
	369	mem_size = resource_size(mem_res);
	370	if (!request_mem_region(mem_res->start, mem_size, "isp1760")) {
	371	pr_warning("isp1760: Cannot reserve the memory resource\n");
	372	ret = -EBUSY;
	373	goto out;
	374	}
	375
	376	irq_res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
	377	if (!irq_res) {
	378	pr_warning("isp1760: IRQ resource not available\n");
	379	return -ENODEV;
	380	}
	381	irqflags \|= irq_res->flags & IRQF_TRIGGER_MASK;
	382
9da69c60 MH	383	if (priv) {
	384	if (priv->is_isp1761)
	385	devflags \|= ISP1760_FLAG_ISP1761;
	386	if (priv->bus_width_16)
	387	devflags \|= ISP1760_FLAG_BUS_WIDTH_16;
	388	if (priv->port1_otg)
	389	devflags \|= ISP1760_FLAG_OTG_EN;
	390	if (priv->analog_oc)
	391	devflags \|= ISP1760_FLAG_ANALOG_OC;
	392	if (priv->dack_polarity_high)
	393	devflags \|= ISP1760_FLAG_DACK_POL_HIGH;
	394	if (priv->dreq_polarity_high)
	395	devflags \|= ISP1760_FLAG_DREQ_POL_HIGH;
	396	}
	397
f7e7aa58	398	hcd = isp1760_register(mem_res->start, mem_size, irq_res->start,
3a7655fc JF	399	irqflags, -ENOENT,
3a7655fc JF	400	&pdev->dev, dev_name(&pdev->dev), devflags);
310e9e33 MG	401
	402	dev_set_drvdata(&pdev->dev, hcd);
	403
f7e7aa58 CM	404	if (IS_ERR(hcd)) {
	405	pr_warning("isp1760: Failed to register the HCD device\n");
	406	ret = -ENODEV;
	407	goto cleanup;
	408	}
	409
	410	pr_info("ISP1760 USB device initialised\n");
	411	return ret;
	412
	413	cleanup:
	414	release_mem_region(mem_res->start, mem_size);
	415	out:
	416	return ret;
	417	}
	418
	419	static int __devexit isp1760_plat_remove(struct platform_device *pdev)
	420	{
	421	struct resource *mem_res;
	422	resource_size_t mem_size;
310e9e33 MG	423	struct usb_hcd *hcd = dev_get_drvdata(&pdev->dev);
	424
	425	usb_remove_hcd(hcd);
f7e7aa58 CM	426
	427	mem_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	428	mem_size = resource_size(mem_res);
	429	release_mem_region(mem_res->start, mem_size);
	430
310e9e33 MG	431	usb_put_hcd(hcd);
310e9e33 MG	432
f7e7aa58 CM	433	return 0;
	434	}
	435
	436	static struct platform_driver isp1760_plat_driver = {
	437	.probe = isp1760_plat_probe,
4198e4f7	438	.remove = __devexit_p(isp1760_plat_remove),
f7e7aa58 CM	439	.driver = {
	440	.name = "isp1760",
	441	},
	442	};
	443
db11e47d SS	444	static int __init isp1760_init(void)
db11e47d SS	445	{
f7e7aa58	446	int ret, any_ret = -ENODEV;
db11e47d SS	447
	448	init_kmem_once();
	449
f7e7aa58 CM	450	ret = platform_driver_register(&isp1760_plat_driver);
	451	if (!ret)
	452	any_ret = 0;
abf058e1	453	#if defined(CONFIG_OF) && defined(CONFIG_OF_IRQ)
d35fb641	454	ret = platform_driver_register(&isp1760_of_driver);
f7e7aa58 CM	455	if (!ret)
f7e7aa58 CM	456	any_ret = 0;
db11e47d	457	#endif
ff30bf1c	458	#ifdef CONFIG_PCI
db11e47d	459	ret = pci_register_driver(&isp1761_pci_driver);
f7e7aa58 CM	460	if (!ret)
f7e7aa58 CM	461	any_ret = 0;
db11e47d	462	#endif
db11e47d	463
f7e7aa58 CM	464	if (any_ret)
	465	deinit_kmem_cache();
	466	return any_ret;
db11e47d SS	467	}
	468	module_init(isp1760_init);
	469
	470	static void __exit isp1760_exit(void)
	471	{
f7e7aa58	472	platform_driver_unregister(&isp1760_plat_driver);
abf058e1	473	#if defined(CONFIG_OF) && defined(CONFIG_OF_IRQ)
d35fb641	474	platform_driver_unregister(&isp1760_of_driver);
db11e47d	475	#endif
ff30bf1c	476	#ifdef CONFIG_PCI
db11e47d SS	477	pci_unregister_driver(&isp1761_pci_driver);
	478	#endif
	479	deinit_kmem_cache();
	480	}
	481	module_exit(isp1760_exit);