[mirror_ubuntu-artful-kernel.git] / drivers / usb / host / isp1760-if.c

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

#include <linux/usb.h>
#include <linux/io.h>

#include "../core/hcd.h"
#include "isp1760-hcd.h"

#ifdef CONFIG_PPC_OF
#include <linux/of.h>
#include <linux/of_platform.h>
#endif

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

#ifdef CONFIG_PPC_OF
static int of_isp1760_probe(struct of_device *dev,
		const struct of_device_id *match)
{
	struct usb_hcd *hcd;
	struct device_node *dp = dev->node;
	struct resource *res;
	struct resource memory;
	struct of_irq oirq;
	int virq;
	u64 res_len;
	int ret;
	const unsigned int *prop;
	unsigned int devflags = 0;

	ret = of_address_to_resource(dp, 0, &memory);
	if (ret)
		return -ENXIO;

	res = request_mem_region(memory.start, memory.end - memory.start + 1,
			dev_name(&dev->dev));
	if (!res)
		return -EBUSY;

	res_len = memory.end - memory.start + 1;

	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;

	if (of_get_property(dp, "port1-disable", NULL) != NULL)
		devflags |= ISP1760_FLAG_PORT1_DIS;

	/* Some systems wire up only 16 of the 32 data lines */
	prop = of_get_property(dp, "bus-width", NULL);
	if (prop && *prop == 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;

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

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

release_reg:
	release_mem_region(memory.start, memory.end - memory.start + 1);
	return ret;
}

static int of_isp1760_remove(struct of_device *dev)
{
	struct usb_hcd *hcd = dev_get_drvdata(&dev->dev);

	dev_set_drvdata(&dev->dev, NULL);

	usb_remove_hcd(hcd);
	iounmap(hcd->regs);
	release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
	usb_put_hcd(hcd);
	return 0;
}

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

static struct of_platform_driver isp1760_of_driver = {
	.name           = "nxp-isp1760",
	.match_table    = of_isp1760_match,
	.probe          = of_isp1760_probe,
	.remove         = of_isp1760_remove,
};
#endif

#ifdef CONFIG_PCI
static u32 nxp_pci_io_base;
static u32 iolength;
static u32 pci_mem_phy0;
static u32 length;
static u8 __iomem *chip_addr;
static u8 __iomem *iobase;

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;
	int length;
	int status = 1;
	struct usb_hcd *hcd;
	unsigned int devflags = 0;

	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");
		release_mem_region(nxp_pci_io_base, iolength);
		return -ENOMEM;
	}
	/* Grab the PLX PCI shared memory of the ISP 1761 we need  */
	pci_mem_phy0 = pci_resource_start(dev, 3);
	length = pci_resource_len(dev, 3);

	if (length < 0xffff) {
		printk(KERN_ERR "memory length for this resource is less than "
				"required\n");
		release_mem_region(nxp_pci_io_base, iolength);
		iounmap(iobase);
		return  -ENOMEM;
	}

	if (!request_mem_region(pci_mem_phy0, length, "ISP-PCI")) {
		printk(KERN_ERR "host controller already in use\n");
		release_mem_region(nxp_pci_io_base, iolength);
		iounmap(iobase);
		return -EBUSY;
	}

	/* 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);
		retry_count--;
	}

	/* 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);
		goto clean;
	}

	pci_set_master(dev);

	status = readl(iobase + 0x68);
	status |= 0x900;
	writel(status, iobase + 0x68);

	dev->dev.dma_mask = NULL;
	hcd = isp1760_register(pci_mem_phy0, length, dev->irq,
		IRQF_SHARED | IRQF_DISABLED, &dev->dev, dev_name(&dev->dev),
		devflags);
	if (!IS_ERR(hcd)) {
		pci_set_drvdata(dev, hcd);
		return 0;
	}
clean:
	status = -ENODEV;
	iounmap(iobase);
	release_mem_region(pci_mem_phy0, length);
	release_mem_region(nxp_pci_io_base, iolength);
	return 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);

	iounmap(iobase);
	iounmap(chip_addr);

	release_mem_region(nxp_pci_io_base, iolength);
	release_mem_region(pci_mem_phy0, length);
}

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

static const struct pci_device_id isp1760_plx [] = { {
	/* handle any USB 2.0 EHCI controller */
	PCI_DEVICE_CLASS(((PCI_CLASS_BRIDGE_OTHER << 8) | (0x06 << 16)), ~0),
		.driver_data = 0,
},
{ /* end: all zeroes */ }
};
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 __init isp1760_init(void)
{
	int ret;

	init_kmem_once();

#ifdef CONFIG_PPC_OF
	ret = of_register_platform_driver(&isp1760_of_driver);
	if (ret) {
		deinit_kmem_cache();
		return ret;
	}
#endif
#ifdef CONFIG_PCI
	ret = pci_register_driver(&isp1761_pci_driver);
	if (ret)
		goto unreg_of;
#endif
	return ret;

#ifdef CONFIG_PCI
unreg_of:
#endif
#ifdef CONFIG_PPC_OF
	of_unregister_platform_driver(&isp1760_of_driver);
#endif
	deinit_kmem_cache();
	return ret;
}
module_init(isp1760_init);

static void __exit isp1760_exit(void)
{
#ifdef CONFIG_PPC_OF
	of_unregister_platform_driver(&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
	6	*
	7	* (c) 2007 Sebastian Siewior <bigeasy@linutronix.de>
	8	*
	9	*/
	10
	11	#include <linux/usb.h>
	12	#include <linux/io.h>
	13
	14	#include "../core/hcd.h"
	15	#include "isp1760-hcd.h"
	16
ff30bf1c	17	#ifdef CONFIG_PPC_OF
db11e47d SS	18	#include <linux/of.h>
	19	#include <linux/of_platform.h>
	20	#endif
	21
ff30bf1c	22	#ifdef CONFIG_PCI
db11e47d SS	23	#include <linux/pci.h>
	24	#endif
	25
ff30bf1c	26	#ifdef CONFIG_PPC_OF
db11e47d SS	27	static int of_isp1760_probe(struct of_device *dev,
	28	const struct of_device_id *match)
	29	{
	30	struct usb_hcd *hcd;
	31	struct device_node *dp = dev->node;
	32	struct resource *res;
	33	struct resource memory;
	34	struct of_irq oirq;
	35	int virq;
	36	u64 res_len;
	37	int ret;
3faefc88 NC	38	const unsigned int *prop;
3faefc88 NC	39	unsigned int devflags = 0;
db11e47d SS	40
	41	ret = of_address_to_resource(dp, 0, &memory);
	42	if (ret)
	43	return -ENXIO;
	44
	45	res = request_mem_region(memory.start, memory.end - memory.start + 1,
7071a3ce	46	dev_name(&dev->dev));
db11e47d SS	47	if (!res)
	48	return -EBUSY;
	49
	50	res_len = memory.end - memory.start + 1;
	51
	52	if (of_irq_map_one(dp, 0, &oirq)) {
	53	ret = -ENODEV;
	54	goto release_reg;
	55	}
	56
	57	virq = irq_create_of_mapping(oirq.controller, oirq.specifier,
	58	oirq.size);
	59
3faefc88 NC	60	if (of_device_is_compatible(dp, "nxp,usb-isp1761"))
	61	devflags \|= ISP1760_FLAG_ISP1761;
	62
	63	if (of_get_property(dp, "port1-disable", NULL) != NULL)
	64	devflags \|= ISP1760_FLAG_PORT1_DIS;
	65
	66	/* Some systems wire up only 16 of the 32 data lines */
	67	prop = of_get_property(dp, "bus-width", NULL);
	68	if (prop && *prop == 16)
	69	devflags \|= ISP1760_FLAG_BUS_WIDTH_16;
	70
	71	if (of_get_property(dp, "port1-otg", NULL) != NULL)
	72	devflags \|= ISP1760_FLAG_OTG_EN;
	73
	74	if (of_get_property(dp, "analog-oc", NULL) != NULL)
	75	devflags \|= ISP1760_FLAG_ANALOG_OC;
	76
	77	if (of_get_property(dp, "dack-polarity", NULL) != NULL)
	78	devflags \|= ISP1760_FLAG_DACK_POL_HIGH;
	79
	80	if (of_get_property(dp, "dreq-polarity", NULL) != NULL)
	81	devflags \|= ISP1760_FLAG_DREQ_POL_HIGH;
	82
db11e47d	83	hcd = isp1760_register(memory.start, res_len, virq,
3faefc88 NC	84	IRQF_SHARED \| IRQF_DISABLED, &dev->dev, dev_name(&dev->dev),
3faefc88 NC	85	devflags);
db11e47d SS	86	if (IS_ERR(hcd)) {
	87	ret = PTR_ERR(hcd);
	88	goto release_reg;
	89	}
	90
	91	dev_set_drvdata(&dev->dev, hcd);
	92	return ret;
	93
	94	release_reg:
	95	release_mem_region(memory.start, memory.end - memory.start + 1);
	96	return ret;
	97	}
	98
	99	static int of_isp1760_remove(struct of_device *dev)
	100	{
	101	struct usb_hcd *hcd = dev_get_drvdata(&dev->dev);
	102
	103	dev_set_drvdata(&dev->dev, NULL);
	104
	105	usb_remove_hcd(hcd);
	106	iounmap(hcd->regs);
	107	release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
	108	usb_put_hcd(hcd);
	109	return 0;
	110	}
	111
	112	static struct of_device_id of_isp1760_match[] = {
	113	{
	114	.compatible = "nxp,usb-isp1760",
	115	},
3faefc88 NC	116	{
	117	.compatible = "nxp,usb-isp1761",
	118	},
db11e47d SS	119	{ },
	120	};
	121	MODULE_DEVICE_TABLE(of, of_isp1760_match);
	122
	123	static struct of_platform_driver isp1760_of_driver = {
	124	.name = "nxp-isp1760",
	125	.match_table = of_isp1760_match,
	126	.probe = of_isp1760_probe,
	127	.remove = of_isp1760_remove,
	128	};
	129	#endif
	130
ff30bf1c	131	#ifdef CONFIG_PCI
db11e47d SS	132	static u32 nxp_pci_io_base;
	133	static u32 iolength;
	134	static u32 pci_mem_phy0;
	135	static u32 length;
6399e7ac AV	136	static u8 __iomem *chip_addr;
6399e7ac AV	137	static u8 __iomem *iobase;
db11e47d SS	138
	139	static int __devinit isp1761_pci_probe(struct pci_dev *dev,
	140	const struct pci_device_id *id)
	141	{
	142	u8 latency, limit;
	143	__u32 reg_data;
	144	int retry_count;
	145	int length;
	146	int status = 1;
	147	struct usb_hcd *hcd;
3faefc88	148	unsigned int devflags = 0;
db11e47d SS	149
	150	if (usb_disabled())
	151	return -ENODEV;
	152
	153	if (pci_enable_device(dev) < 0)
	154	return -ENODEV;
	155
	156	if (!dev->irq)
	157	return -ENODEV;
	158
	159	/* Grab the PLX PCI mem maped port start address we need */
	160	nxp_pci_io_base = pci_resource_start(dev, 0);
	161	iolength = pci_resource_len(dev, 0);
	162
	163	if (!request_mem_region(nxp_pci_io_base, iolength, "ISP1761 IO MEM")) {
	164	printk(KERN_ERR "request region #1\n");
	165	return -EBUSY;
	166	}
	167
	168	iobase = ioremap_nocache(nxp_pci_io_base, iolength);
	169	if (!iobase) {
	170	printk(KERN_ERR "ioremap #1\n");
	171	release_mem_region(nxp_pci_io_base, iolength);
	172	return -ENOMEM;
	173	}
	174	/* Grab the PLX PCI shared memory of the ISP 1761 we need */
	175	pci_mem_phy0 = pci_resource_start(dev, 3);
	176	length = pci_resource_len(dev, 3);
	177
	178	if (length < 0xffff) {
	179	printk(KERN_ERR "memory length for this resource is less than "
	180	"required\n");
	181	release_mem_region(nxp_pci_io_base, iolength);
	182	iounmap(iobase);
	183	return -ENOMEM;
	184	}
	185
	186	if (!request_mem_region(pci_mem_phy0, length, "ISP-PCI")) {
	187	printk(KERN_ERR "host controller already in use\n");
	188	release_mem_region(nxp_pci_io_base, iolength);
	189	iounmap(iobase);
	190	return -EBUSY;
	191	}
	192
	193	/* bad pci latencies can contribute to overruns */
	194	pci_read_config_byte(dev, PCI_LATENCY_TIMER, &latency);
	195	if (latency) {
	196	pci_read_config_byte(dev, PCI_MAX_LAT, &limit);
	197	if (limit && limit < latency)
	198	pci_write_config_byte(dev, PCI_LATENCY_TIMER, limit);
	199	}
	200
	201	/* Try to check whether we can access Scratch Register of
	202	* Host Controller or not. The initial PCI access is retried until
	203	* local init for the PCI bridge is completed
	204	*/
	205	retry_count = 20;
	206	reg_data = 0;
	207	while ((reg_data != 0xFACE) && retry_count) {
	208	/*by default host is in 16bit mode, so
	209	* io operations at this stage must be 16 bit
	210	* */
	211	writel(0xface, chip_addr + HC_SCRATCH_REG);
	212	udelay(100);
213	reg_data = readl(chip_addr + HC_SCRATCH_REG);
214	retry_count--;
215	}
216
217	/* Host Controller presence is detected by writing to scratch register
218	* and reading back and checking the contents are same or not
219	*/
220	if (reg_data != 0xFACE) {
802f389a	221	dev_err(&dev->dev, "scratch register mismatch %x\n", reg_data);
db11e47d SS	222	goto clean;
	223	}
	224
	225	pci_set_master(dev);
	226
	227	status = readl(iobase + 0x68);
	228	status \|= 0x900;
	229	writel(status, iobase + 0x68);
	230
	231	dev->dev.dma_mask = NULL;
	232	hcd = isp1760_register(pci_mem_phy0, length, dev->irq,
3faefc88 NC	233	IRQF_SHARED \| IRQF_DISABLED, &dev->dev, dev_name(&dev->dev),
3faefc88 NC	234	devflags);
ce5dee50 JB	235	if (!IS_ERR(hcd)) {
ce5dee50 JB	236	pci_set_drvdata(dev, hcd);
db11e47d	237	return 0;
ce5dee50	238	}
db11e47d SS	239	clean:
	240	status = -ENODEV;
	241	iounmap(iobase);
	242	release_mem_region(pci_mem_phy0, length);
	243	release_mem_region(nxp_pci_io_base, iolength);
	244	return status;
	245	}
	246	static void isp1761_pci_remove(struct pci_dev *dev)
	247	{
	248	struct usb_hcd *hcd;
	249
	250	hcd = pci_get_drvdata(dev);
	251
	252	usb_remove_hcd(hcd);
	253	iounmap(hcd->regs);
	254	release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
	255	usb_put_hcd(hcd);
	256
	257	pci_disable_device(dev);
	258
	259	iounmap(iobase);
	260	iounmap(chip_addr);
	261
	262	release_mem_region(nxp_pci_io_base, iolength);
	263	release_mem_region(pci_mem_phy0, length);
	264	}
	265
	266	static void isp1761_pci_shutdown(struct pci_dev *dev)
	267	{
	268	printk(KERN_ERR "ips1761_pci_shutdown\n");
	269	}
	270
	271	static const struct pci_device_id isp1760_plx [] = { {
	272	/* handle any USB 2.0 EHCI controller */
	273	PCI_DEVICE_CLASS(((PCI_CLASS_BRIDGE_OTHER << 8) \| (0x06 << 16)), ~0),
	274	.driver_data = 0,
	275	},
	276	{ /* end: all zeroes */ }
	277	};
	278	MODULE_DEVICE_TABLE(pci, isp1760_plx);
	279
	280	static struct pci_driver isp1761_pci_driver = {
	281	.name = "isp1760",
	282	.id_table = isp1760_plx,
	283	.probe = isp1761_pci_probe,
	284	.remove = isp1761_pci_remove,
	285	.shutdown = isp1761_pci_shutdown,
	286	};
	287	#endif
	288
	289	static int __init isp1760_init(void)
	290	{
ff30bf1c	291	int ret;
db11e47d SS	292
	293	init_kmem_once();
	294
ff30bf1c	295	#ifdef CONFIG_PPC_OF
db11e47d SS	296	ret = of_register_platform_driver(&isp1760_of_driver);
	297	if (ret) {
	298	deinit_kmem_cache();
	299	return ret;
	300	}
	301	#endif
ff30bf1c	302	#ifdef CONFIG_PCI
db11e47d SS	303	ret = pci_register_driver(&isp1761_pci_driver);
	304	if (ret)
	305	goto unreg_of;
	306	#endif
	307	return ret;
	308
ff30bf1c	309	#ifdef CONFIG_PCI
db11e47d SS	310	unreg_of:
db11e47d SS	311	#endif
ff30bf1c	312	#ifdef CONFIG_PPC_OF
db11e47d SS	313	of_unregister_platform_driver(&isp1760_of_driver);
	314	#endif
	315	deinit_kmem_cache();
	316	return ret;
	317	}
	318	module_init(isp1760_init);
	319
	320	static void __exit isp1760_exit(void)
	321	{
ff30bf1c	322	#ifdef CONFIG_PPC_OF
db11e47d SS	323	of_unregister_platform_driver(&isp1760_of_driver);
db11e47d SS	324	#endif
ff30bf1c	325	#ifdef CONFIG_PCI
db11e47d SS	326	pci_unregister_driver(&isp1761_pci_driver);
	327	#endif
	328	deinit_kmem_cache();
	329	}
	330	module_exit(isp1760_exit);