[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;
	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;
	}

	virq = irq_of_parse_and_map(dp, 0);
	if (!virq) {
		ret = -ENODEV;
		goto release_reg;
	}

	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;
	}

	platform_set_drvdata(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 = platform_get_drvdata(dev);

	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 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 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 = dev_get_platdata(&pdev->dev);
	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");
		ret = -ENODEV;
		goto cleanup;
	}

	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);

	platform_set_drvdata(pdev, 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 isp1760_plat_remove(struct platform_device *pdev)
{
	struct resource *mem_res;
	resource_size_t mem_size;
	struct usb_hcd *hcd = platform_get_drvdata(pdev);

	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	= 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;
db11e47d SS	45	struct resource memory;
db11e47d	46	int virq;
e07afd3f	47	resource_size_t res_len;
db11e47d	48	int ret;
3faefc88	49	unsigned int devflags = 0;
3a7655fc	50	enum of_gpio_flags gpio_flags;
8ad028bd	51	u32 bus_width = 0;
3a7655fc JF	52
	53	drvdata = kzalloc(sizeof(*drvdata), GFP_KERNEL);
	54	if (!drvdata)
	55	return -ENOMEM;
db11e47d SS	56
db11e47d SS	57	ret = of_address_to_resource(dp, 0, &memory);
30a0dee7 JL	58	if (ret) {
	59	ret = -ENXIO;
	60	goto free_data;
	61	}
db11e47d	62
e07afd3f TK	63	res_len = resource_size(&memory);
	64
	65	res = request_mem_region(memory.start, res_len, dev_name(&dev->dev));
30a0dee7 JL	66	if (!res) {
	67	ret = -EBUSY;
	68	goto free_data;
	69	}
db11e47d	70
d124a60d NI	71	virq = irq_of_parse_and_map(dp, 0);
d124a60d NI	72	if (!virq) {
db11e47d SS	73	ret = -ENODEV;
	74	goto release_reg;
	75	}
	76
3faefc88 NC	77	if (of_device_is_compatible(dp, "nxp,usb-isp1761"))
	78	devflags \|= ISP1760_FLAG_ISP1761;
	79
3faefc88	80	/* Some systems wire up only 16 of the 32 data lines */
8ad028bd DM	81	of_property_read_u32(dp, "bus-width", &bus_width);
8ad028bd DM	82	if (bus_width == 16)
3faefc88 NC	83	devflags \|= ISP1760_FLAG_BUS_WIDTH_16;
	84
	85	if (of_get_property(dp, "port1-otg", NULL) != NULL)
	86	devflags \|= ISP1760_FLAG_OTG_EN;
	87
	88	if (of_get_property(dp, "analog-oc", NULL) != NULL)
	89	devflags \|= ISP1760_FLAG_ANALOG_OC;
	90
	91	if (of_get_property(dp, "dack-polarity", NULL) != NULL)
	92	devflags \|= ISP1760_FLAG_DACK_POL_HIGH;
	93
	94	if (of_get_property(dp, "dreq-polarity", NULL) != NULL)
	95	devflags \|= ISP1760_FLAG_DREQ_POL_HIGH;
	96
3a7655fc JF	97	drvdata->rst_gpio = of_get_gpio_flags(dp, 0, &gpio_flags);
	98	if (gpio_is_valid(drvdata->rst_gpio)) {
	99	ret = gpio_request(drvdata->rst_gpio, dev_name(&dev->dev));
	100	if (!ret) {
	101	if (!(gpio_flags & OF_GPIO_ACTIVE_LOW)) {
	102	devflags \|= ISP1760_FLAG_RESET_ACTIVE_HIGH;
	103	gpio_direction_output(drvdata->rst_gpio, 0);
	104	} else {
	105	gpio_direction_output(drvdata->rst_gpio, 1);
	106	}
	107	} else {
	108	drvdata->rst_gpio = ret;
	109	}
db11e47d SS	110	}
db11e47d SS	111
3a7655fc JF	112	drvdata->hcd = isp1760_register(memory.start, res_len, virq,
	113	IRQF_SHARED, drvdata->rst_gpio,
	114	&dev->dev, dev_name(&dev->dev),
	115	devflags);
	116	if (IS_ERR(drvdata->hcd)) {
	117	ret = PTR_ERR(drvdata->hcd);
	118	goto free_gpio;
	119	}
	120
477527ba	121	platform_set_drvdata(dev, drvdata);
db11e47d SS	122	return ret;
db11e47d SS	123
3a7655fc JF	124	free_gpio:
	125	if (gpio_is_valid(drvdata->rst_gpio))
	126	gpio_free(drvdata->rst_gpio);
db11e47d	127	release_reg:
e07afd3f	128	release_mem_region(memory.start, res_len);
30a0dee7	129	free_data:
3a7655fc	130	kfree(drvdata);
db11e47d SS	131	return ret;
	132	}
	133
2dc11581	134	static int of_isp1760_remove(struct platform_device *dev)
db11e47d	135	{
477527ba	136	struct isp1760 *drvdata = platform_get_drvdata(dev);
db11e47d	137
3a7655fc JF	138	usb_remove_hcd(drvdata->hcd);
	139	iounmap(drvdata->hcd->regs);
	140	release_mem_region(drvdata->hcd->rsrc_start, drvdata->hcd->rsrc_len);
	141	usb_put_hcd(drvdata->hcd);
	142
	143	if (gpio_is_valid(drvdata->rst_gpio))
	144	gpio_free(drvdata->rst_gpio);
	145
	146	kfree(drvdata);
db11e47d SS	147	return 0;
	148	}
	149
c4386ad0	150	static const struct of_device_id of_isp1760_match[] = {
db11e47d SS	151	{
	152	.compatible = "nxp,usb-isp1760",
	153	},
3faefc88 NC	154	{
	155	.compatible = "nxp,usb-isp1761",
	156	},
db11e47d SS	157	{ },
	158	};
	159	MODULE_DEVICE_TABLE(of, of_isp1760_match);
	160
d35fb641	161	static struct platform_driver isp1760_of_driver = {
4018294b GL	162	.driver = {
	163	.name = "nxp-isp1760",
	164	.owner = THIS_MODULE,
	165	.of_match_table = of_isp1760_match,
	166	},
db11e47d SS	167	.probe = of_isp1760_probe,
	168	.remove = of_isp1760_remove,
	169	};
	170	#endif
	171
ff30bf1c	172	#ifdef CONFIG_PCI
41ac7b3a	173	static int isp1761_pci_probe(struct pci_dev *dev,
db11e47d SS	174	const struct pci_device_id *id)
	175	{
	176	u8 latency, limit;
	177	__u32 reg_data;
	178	int retry_count;
db11e47d	179	struct usb_hcd *hcd;
3faefc88	180	unsigned int devflags = 0;
6013bbba KB	181	int ret_status = 0;
	182
	183	resource_size_t pci_mem_phy0;
	184	resource_size_t memlength;
	185
	186	u8 __iomem *chip_addr;
	187	u8 __iomem *iobase;
	188	resource_size_t nxp_pci_io_base;
	189	resource_size_t iolength;
db11e47d SS	190
	191	if (usb_disabled())
	192	return -ENODEV;
	193
	194	if (pci_enable_device(dev) < 0)
	195	return -ENODEV;
	196
	197	if (!dev->irq)
	198	return -ENODEV;
	199
	200	/* Grab the PLX PCI mem maped port start address we need */
	201	nxp_pci_io_base = pci_resource_start(dev, 0);
	202	iolength = pci_resource_len(dev, 0);
	203
	204	if (!request_mem_region(nxp_pci_io_base, iolength, "ISP1761 IO MEM")) {
	205	printk(KERN_ERR "request region #1\n");
	206	return -EBUSY;
	207	}
	208
	209	iobase = ioremap_nocache(nxp_pci_io_base, iolength);
	210	if (!iobase) {
	211	printk(KERN_ERR "ioremap #1\n");
6013bbba KB	212	ret_status = -ENOMEM;
6013bbba KB	213	goto cleanup1;
db11e47d SS	214	}
	215	/* Grab the PLX PCI shared memory of the ISP 1761 we need */
	216	pci_mem_phy0 = pci_resource_start(dev, 3);
6013bbba KB	217	memlength = pci_resource_len(dev, 3);
	218	if (memlength < 0xffff) {
	219	printk(KERN_ERR "memory length for this resource is wrong\n");
	220	ret_status = -ENOMEM;
	221	goto cleanup2;
db11e47d SS	222	}
db11e47d SS	223
6013bbba	224	if (!request_mem_region(pci_mem_phy0, memlength, "ISP-PCI")) {
db11e47d	225	printk(KERN_ERR "host controller already in use\n");
6013bbba KB	226	ret_status = -EBUSY;
	227	goto cleanup2;
	228	}
	229
	230	/* map available memory */
	231	chip_addr = ioremap_nocache(pci_mem_phy0,memlength);
	232	if (!chip_addr) {
	233	printk(KERN_ERR "Error ioremap failed\n");
	234	ret_status = -ENOMEM;
	235	goto cleanup3;
db11e47d SS	236	}
	237
	238	/* bad pci latencies can contribute to overruns */
	239	pci_read_config_byte(dev, PCI_LATENCY_TIMER, &latency);
	240	if (latency) {
	241	pci_read_config_byte(dev, PCI_MAX_LAT, &limit);
	242	if (limit && limit < latency)
	243	pci_write_config_byte(dev, PCI_LATENCY_TIMER, limit);
	244	}
	245
	246	/* Try to check whether we can access Scratch Register of
	247	* Host Controller or not. The initial PCI access is retried until
	248	* local init for the PCI bridge is completed
	249	*/
	250	retry_count = 20;
	251	reg_data = 0;
	252	while ((reg_data != 0xFACE) && retry_count) {
	253	/*by default host is in 16bit mode, so
	254	* io operations at this stage must be 16 bit
	255	* */
	256	writel(0xface, chip_addr + HC_SCRATCH_REG);
	257	udelay(100);
6013bbba	258	reg_data = readl(chip_addr + HC_SCRATCH_REG) & 0x0000ffff;
db11e47d SS	259	retry_count--;
	260	}
	261
6013bbba KB	262	iounmap(chip_addr);
6013bbba KB	263
db11e47d SS	264	/* Host Controller presence is detected by writing to scratch register
	265	* and reading back and checking the contents are same or not
	266	*/
	267	if (reg_data != 0xFACE) {
802f389a	268	dev_err(&dev->dev, "scratch register mismatch %x\n", reg_data);
6013bbba KB	269	ret_status = -ENOMEM;
6013bbba KB	270	goto cleanup3;
db11e47d SS	271	}
	272
	273	pci_set_master(dev);
	274
6013bbba KB	275	/* configure PLX PCI chip to pass interrupts */
	276	#define PLX_INT_CSR_REG 0x68
	277	reg_data = readl(iobase + PLX_INT_CSR_REG);
	278	reg_data \|= 0x900;
	279	writel(reg_data, iobase + PLX_INT_CSR_REG);
db11e47d SS	280
db11e47d SS	281	dev->dev.dma_mask = NULL;
6013bbba	282	hcd = isp1760_register(pci_mem_phy0, memlength, dev->irq,
3a7655fc	283	IRQF_SHARED, -ENOENT, &dev->dev, dev_name(&dev->dev),
3faefc88	284	devflags);
6013bbba KB	285	if (IS_ERR(hcd)) {
	286	ret_status = -ENODEV;
	287	goto cleanup3;
ce5dee50	288	}
6013bbba KB	289
6013bbba KB	290	/* done with PLX IO access */
db11e47d	291	iounmap(iobase);
db11e47d	292	release_mem_region(nxp_pci_io_base, iolength);
6013bbba KB	293
	294	pci_set_drvdata(dev, hcd);
	295	return 0;
	296
	297	cleanup3:
	298	release_mem_region(pci_mem_phy0, memlength);
	299	cleanup2:
	300	iounmap(iobase);
	301	cleanup1:
	302	release_mem_region(nxp_pci_io_base, iolength);
	303	return ret_status;
db11e47d	304	}
6013bbba	305
db11e47d SS	306	static void isp1761_pci_remove(struct pci_dev *dev)
	307	{
	308	struct usb_hcd *hcd;
	309
	310	hcd = pci_get_drvdata(dev);
	311
	312	usb_remove_hcd(hcd);
	313	iounmap(hcd->regs);
	314	release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
	315	usb_put_hcd(hcd);
	316
	317	pci_disable_device(dev);
db11e47d SS	318	}
	319
	320	static void isp1761_pci_shutdown(struct pci_dev *dev)
	321	{
	322	printk(KERN_ERR "ips1761_pci_shutdown\n");
	323	}
	324
6c073568 SAS	325	static const struct pci_device_id isp1760_plx [] = {
	326	{
	327	.class = PCI_CLASS_BRIDGE_OTHER << 8,
	328	.class_mask = ~0,
	329	.vendor = PCI_VENDOR_ID_PLX,
	330	.device = 0x5406,
	331	.subvendor = PCI_VENDOR_ID_PLX,
	332	.subdevice = 0x9054,
	333	},
	334	{ }
db11e47d SS	335	};
	336	MODULE_DEVICE_TABLE(pci, isp1760_plx);
	337
	338	static struct pci_driver isp1761_pci_driver = {
	339	.name = "isp1760",
	340	.id_table = isp1760_plx,
	341	.probe = isp1761_pci_probe,
	342	.remove = isp1761_pci_remove,
	343	.shutdown = isp1761_pci_shutdown,
	344	};
	345	#endif
	346
41ac7b3a	347	static int isp1760_plat_probe(struct platform_device *pdev)
f7e7aa58 CM	348	{
	349	int ret = 0;
	350	struct usb_hcd *hcd;
	351	struct resource *mem_res;
	352	struct resource *irq_res;
	353	resource_size_t mem_size;
d4f09e28	354	struct isp1760_platform_data *priv = dev_get_platdata(&pdev->dev);
9da69c60	355	unsigned int devflags = 0;
b5dd18d8	356	unsigned long irqflags = IRQF_SHARED;
f7e7aa58 CM	357
	358	mem_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	359	if (!mem_res) {
	360	pr_warning("isp1760: Memory resource not available\n");
	361	ret = -ENODEV;
	362	goto out;
	363	}
	364	mem_size = resource_size(mem_res);
	365	if (!request_mem_region(mem_res->start, mem_size, "isp1760")) {
	366	pr_warning("isp1760: Cannot reserve the memory resource\n");
	367	ret = -EBUSY;
	368	goto out;
	369	}
	370
	371	irq_res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
	372	if (!irq_res) {
	373	pr_warning("isp1760: IRQ resource not available\n");
72d9c8b6 LC	374	ret = -ENODEV;
72d9c8b6 LC	375	goto cleanup;
f7e7aa58	376	}
72d9c8b6	377
f7e7aa58 CM	378	irqflags \|= irq_res->flags & IRQF_TRIGGER_MASK;
f7e7aa58 CM	379
9da69c60 MH	380	if (priv) {
	381	if (priv->is_isp1761)
	382	devflags \|= ISP1760_FLAG_ISP1761;
	383	if (priv->bus_width_16)
	384	devflags \|= ISP1760_FLAG_BUS_WIDTH_16;
	385	if (priv->port1_otg)
	386	devflags \|= ISP1760_FLAG_OTG_EN;
	387	if (priv->analog_oc)
	388	devflags \|= ISP1760_FLAG_ANALOG_OC;
	389	if (priv->dack_polarity_high)
	390	devflags \|= ISP1760_FLAG_DACK_POL_HIGH;
	391	if (priv->dreq_polarity_high)
	392	devflags \|= ISP1760_FLAG_DREQ_POL_HIGH;
	393	}
	394
f7e7aa58	395	hcd = isp1760_register(mem_res->start, mem_size, irq_res->start,
3a7655fc JF	396	irqflags, -ENOENT,
3a7655fc JF	397	&pdev->dev, dev_name(&pdev->dev), devflags);
310e9e33	398
477527ba	399	platform_set_drvdata(pdev, hcd);
310e9e33	400
f7e7aa58 CM	401	if (IS_ERR(hcd)) {
	402	pr_warning("isp1760: Failed to register the HCD device\n");
	403	ret = -ENODEV;
	404	goto cleanup;
	405	}
	406
	407	pr_info("ISP1760 USB device initialised\n");
	408	return ret;
	409
	410	cleanup:
	411	release_mem_region(mem_res->start, mem_size);
	412	out:
	413	return ret;
	414	}
	415
fb4e98ab	416	static int isp1760_plat_remove(struct platform_device *pdev)
f7e7aa58 CM	417	{
	418	struct resource *mem_res;
	419	resource_size_t mem_size;
477527ba	420	struct usb_hcd *hcd = platform_get_drvdata(pdev);
310e9e33 MG	421
310e9e33 MG	422	usb_remove_hcd(hcd);
f7e7aa58 CM	423
	424	mem_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	425	mem_size = resource_size(mem_res);
	426	release_mem_region(mem_res->start, mem_size);
	427
310e9e33 MG	428	usb_put_hcd(hcd);
310e9e33 MG	429
f7e7aa58 CM	430	return 0;
	431	}
	432
	433	static struct platform_driver isp1760_plat_driver = {
	434	.probe = isp1760_plat_probe,
7690417d	435	.remove = isp1760_plat_remove,
f7e7aa58 CM	436	.driver = {
	437	.name = "isp1760",
	438	},
	439	};
	440
db11e47d SS	441	static int __init isp1760_init(void)
db11e47d SS	442	{
f7e7aa58	443	int ret, any_ret = -ENODEV;
db11e47d SS	444
	445	init_kmem_once();
	446
f7e7aa58 CM	447	ret = platform_driver_register(&isp1760_plat_driver);
	448	if (!ret)
	449	any_ret = 0;
abf058e1	450	#if defined(CONFIG_OF) && defined(CONFIG_OF_IRQ)
d35fb641	451	ret = platform_driver_register(&isp1760_of_driver);
f7e7aa58 CM	452	if (!ret)
f7e7aa58 CM	453	any_ret = 0;
db11e47d	454	#endif
ff30bf1c	455	#ifdef CONFIG_PCI
db11e47d	456	ret = pci_register_driver(&isp1761_pci_driver);
f7e7aa58 CM	457	if (!ret)
f7e7aa58 CM	458	any_ret = 0;
db11e47d	459	#endif
db11e47d	460
f7e7aa58 CM	461	if (any_ret)
	462	deinit_kmem_cache();
	463	return any_ret;
db11e47d SS	464	}
	465	module_init(isp1760_init);
	466
	467	static void __exit isp1760_exit(void)
	468	{
f7e7aa58	469	platform_driver_unregister(&isp1760_plat_driver);
abf058e1	470	#if defined(CONFIG_OF) && defined(CONFIG_OF_IRQ)
d35fb641	471	platform_driver_unregister(&isp1760_of_driver);
db11e47d	472	#endif
ff30bf1c	473	#ifdef CONFIG_PCI
db11e47d SS	474	pci_unregister_driver(&isp1761_pci_driver);
	475	#endif
	476	deinit_kmem_cache();
	477	}
	478	module_exit(isp1760_exit);