[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;
	}

	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 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 = 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 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	= 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
	121	dev_set_drvdata(&dev->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	{
3a7655fc	136	struct isp1760 *drvdata = dev_get_drvdata(&dev->dev);
db11e47d SS	137
	138	dev_set_drvdata(&dev->dev, NULL);
	139
3a7655fc JF	140	usb_remove_hcd(drvdata->hcd);
	141	iounmap(drvdata->hcd->regs);
	142	release_mem_region(drvdata->hcd->rsrc_start, drvdata->hcd->rsrc_len);
	143	usb_put_hcd(drvdata->hcd);
	144
	145	if (gpio_is_valid(drvdata->rst_gpio))
	146	gpio_free(drvdata->rst_gpio);
	147
	148	kfree(drvdata);
db11e47d SS	149	return 0;
	150	}
	151
c4386ad0	152	static const struct of_device_id of_isp1760_match[] = {
db11e47d SS	153	{
	154	.compatible = "nxp,usb-isp1760",
	155	},
3faefc88 NC	156	{
	157	.compatible = "nxp,usb-isp1761",
	158	},
db11e47d SS	159	{ },
	160	};
	161	MODULE_DEVICE_TABLE(of, of_isp1760_match);
	162
d35fb641	163	static struct platform_driver isp1760_of_driver = {
4018294b GL	164	.driver = {
	165	.name = "nxp-isp1760",
	166	.owner = THIS_MODULE,
	167	.of_match_table = of_isp1760_match,
	168	},
db11e47d SS	169	.probe = of_isp1760_probe,
	170	.remove = of_isp1760_remove,
	171	};
	172	#endif
	173
ff30bf1c	174	#ifdef CONFIG_PCI
41ac7b3a	175	static int isp1761_pci_probe(struct pci_dev *dev,
db11e47d SS	176	const struct pci_device_id *id)
	177	{
	178	u8 latency, limit;
	179	__u32 reg_data;
	180	int retry_count;
db11e47d	181	struct usb_hcd *hcd;
3faefc88	182	unsigned int devflags = 0;
6013bbba KB	183	int ret_status = 0;
	184
	185	resource_size_t pci_mem_phy0;
	186	resource_size_t memlength;
	187
	188	u8 __iomem *chip_addr;
	189	u8 __iomem *iobase;
	190	resource_size_t nxp_pci_io_base;
	191	resource_size_t iolength;
db11e47d SS	192
	193	if (usb_disabled())
	194	return -ENODEV;
	195
	196	if (pci_enable_device(dev) < 0)
	197	return -ENODEV;
	198
	199	if (!dev->irq)
	200	return -ENODEV;
	201
	202	/* Grab the PLX PCI mem maped port start address we need */
	203	nxp_pci_io_base = pci_resource_start(dev, 0);
	204	iolength = pci_resource_len(dev, 0);
	205
	206	if (!request_mem_region(nxp_pci_io_base, iolength, "ISP1761 IO MEM")) {
	207	printk(KERN_ERR "request region #1\n");
	208	return -EBUSY;
	209	}
	210
	211	iobase = ioremap_nocache(nxp_pci_io_base, iolength);
	212	if (!iobase) {
	213	printk(KERN_ERR "ioremap #1\n");
6013bbba KB	214	ret_status = -ENOMEM;
6013bbba KB	215	goto cleanup1;
db11e47d SS	216	}
	217	/* Grab the PLX PCI shared memory of the ISP 1761 we need */
	218	pci_mem_phy0 = pci_resource_start(dev, 3);
6013bbba KB	219	memlength = pci_resource_len(dev, 3);
	220	if (memlength < 0xffff) {
	221	printk(KERN_ERR "memory length for this resource is wrong\n");
	222	ret_status = -ENOMEM;
	223	goto cleanup2;
db11e47d SS	224	}
db11e47d SS	225
6013bbba	226	if (!request_mem_region(pci_mem_phy0, memlength, "ISP-PCI")) {
db11e47d	227	printk(KERN_ERR "host controller already in use\n");
6013bbba KB	228	ret_status = -EBUSY;
	229	goto cleanup2;
	230	}
	231
	232	/* map available memory */
	233	chip_addr = ioremap_nocache(pci_mem_phy0,memlength);
	234	if (!chip_addr) {
	235	printk(KERN_ERR "Error ioremap failed\n");
	236	ret_status = -ENOMEM;
	237	goto cleanup3;
db11e47d SS	238	}
	239
	240	/* bad pci latencies can contribute to overruns */
	241	pci_read_config_byte(dev, PCI_LATENCY_TIMER, &latency);
	242	if (latency) {
	243	pci_read_config_byte(dev, PCI_MAX_LAT, &limit);
	244	if (limit && limit < latency)
	245	pci_write_config_byte(dev, PCI_LATENCY_TIMER, limit);
	246	}
	247
	248	/* Try to check whether we can access Scratch Register of
	249	* Host Controller or not. The initial PCI access is retried until
	250	* local init for the PCI bridge is completed
	251	*/
	252	retry_count = 20;
	253	reg_data = 0;
	254	while ((reg_data != 0xFACE) && retry_count) {
	255	/*by default host is in 16bit mode, so
	256	* io operations at this stage must be 16 bit
	257	* */
	258	writel(0xface, chip_addr + HC_SCRATCH_REG);
	259	udelay(100);
6013bbba	260	reg_data = readl(chip_addr + HC_SCRATCH_REG) & 0x0000ffff;
db11e47d SS	261	retry_count--;
	262	}
	263
6013bbba KB	264	iounmap(chip_addr);
6013bbba KB	265
db11e47d SS	266	/* Host Controller presence is detected by writing to scratch register
	267	* and reading back and checking the contents are same or not
	268	*/
	269	if (reg_data != 0xFACE) {
802f389a	270	dev_err(&dev->dev, "scratch register mismatch %x\n", reg_data);
6013bbba KB	271	ret_status = -ENOMEM;
6013bbba KB	272	goto cleanup3;
db11e47d SS	273	}
	274
	275	pci_set_master(dev);
	276
6013bbba KB	277	/* configure PLX PCI chip to pass interrupts */
	278	#define PLX_INT_CSR_REG 0x68
	279	reg_data = readl(iobase + PLX_INT_CSR_REG);
	280	reg_data \|= 0x900;
	281	writel(reg_data, iobase + PLX_INT_CSR_REG);
db11e47d SS	282
db11e47d SS	283	dev->dev.dma_mask = NULL;
6013bbba	284	hcd = isp1760_register(pci_mem_phy0, memlength, dev->irq,
3a7655fc	285	IRQF_SHARED, -ENOENT, &dev->dev, dev_name(&dev->dev),
3faefc88	286	devflags);
6013bbba KB	287	if (IS_ERR(hcd)) {
	288	ret_status = -ENODEV;
	289	goto cleanup3;
ce5dee50	290	}
6013bbba KB	291
6013bbba KB	292	/* done with PLX IO access */
db11e47d	293	iounmap(iobase);
db11e47d	294	release_mem_region(nxp_pci_io_base, iolength);
6013bbba KB	295
	296	pci_set_drvdata(dev, hcd);
	297	return 0;
	298
	299	cleanup3:
	300	release_mem_region(pci_mem_phy0, memlength);
	301	cleanup2:
	302	iounmap(iobase);
	303	cleanup1:
	304	release_mem_region(nxp_pci_io_base, iolength);
	305	return ret_status;
db11e47d	306	}
6013bbba	307
db11e47d SS	308	static void isp1761_pci_remove(struct pci_dev *dev)
	309	{
	310	struct usb_hcd *hcd;
	311
	312	hcd = pci_get_drvdata(dev);
	313
	314	usb_remove_hcd(hcd);
	315	iounmap(hcd->regs);
	316	release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
	317	usb_put_hcd(hcd);
	318
	319	pci_disable_device(dev);
db11e47d SS	320	}
	321
	322	static void isp1761_pci_shutdown(struct pci_dev *dev)
	323	{
	324	printk(KERN_ERR "ips1761_pci_shutdown\n");
	325	}
	326
6c073568 SAS	327	static const struct pci_device_id isp1760_plx [] = {
	328	{
	329	.class = PCI_CLASS_BRIDGE_OTHER << 8,
	330	.class_mask = ~0,
	331	.vendor = PCI_VENDOR_ID_PLX,
	332	.device = 0x5406,
	333	.subvendor = PCI_VENDOR_ID_PLX,
	334	.subdevice = 0x9054,
	335	},
	336	{ }
db11e47d SS	337	};
	338	MODULE_DEVICE_TABLE(pci, isp1760_plx);
	339
	340	static struct pci_driver isp1761_pci_driver = {
	341	.name = "isp1760",
	342	.id_table = isp1760_plx,
	343	.probe = isp1761_pci_probe,
	344	.remove = isp1761_pci_remove,
	345	.shutdown = isp1761_pci_shutdown,
	346	};
	347	#endif
	348
41ac7b3a	349	static int isp1760_plat_probe(struct platform_device *pdev)
f7e7aa58 CM	350	{
	351	int ret = 0;
	352	struct usb_hcd *hcd;
	353	struct resource *mem_res;
	354	struct resource *irq_res;
	355	resource_size_t mem_size;
9da69c60 MH	356	struct isp1760_platform_data *priv = pdev->dev.platform_data;
9da69c60 MH	357	unsigned int devflags = 0;
b5dd18d8	358	unsigned long irqflags = IRQF_SHARED;
f7e7aa58 CM	359
	360	mem_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	361	if (!mem_res) {
	362	pr_warning("isp1760: Memory resource not available\n");
	363	ret = -ENODEV;
	364	goto out;
	365	}
	366	mem_size = resource_size(mem_res);
	367	if (!request_mem_region(mem_res->start, mem_size, "isp1760")) {
	368	pr_warning("isp1760: Cannot reserve the memory resource\n");
	369	ret = -EBUSY;
	370	goto out;
	371	}
	372
	373	irq_res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
	374	if (!irq_res) {
	375	pr_warning("isp1760: IRQ resource not available\n");
	376	return -ENODEV;
	377	}
	378	irqflags \|= irq_res->flags & IRQF_TRIGGER_MASK;
	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 MG	398
	399	dev_set_drvdata(&pdev->dev, hcd);
	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;
310e9e33 MG	420	struct usb_hcd *hcd = dev_get_drvdata(&pdev->dev);
	421
	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);