[deliverable/linux.git] / drivers / usb / host / ehci-orion.c

/*
 * drivers/usb/host/ehci-orion.c
 *
 * Tzachi Perelstein <tzachi@marvell.com>
 *
 * This file is licensed under  the terms of the GNU General Public
 * License version 2. This program is licensed "as is" without any
 * warranty of any kind, whether express or implied.
 */

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/mbus.h>
#include <plat/ehci-orion.h>

#define rdl(off)	__raw_readl(hcd->regs + (off))
#define wrl(off, val)	__raw_writel((val), hcd->regs + (off))

#define USB_CMD			0x140
#define USB_MODE		0x1a8
#define USB_CAUSE		0x310
#define USB_MASK		0x314
#define USB_WINDOW_CTRL(i)	(0x320 + ((i) << 4))
#define USB_WINDOW_BASE(i)	(0x324 + ((i) << 4))
#define USB_IPG			0x360
#define USB_PHY_PWR_CTRL	0x400
#define USB_PHY_TX_CTRL		0x420
#define USB_PHY_RX_CTRL		0x430
#define USB_PHY_IVREF_CTRL	0x440
#define USB_PHY_TST_GRP_CTRL	0x450

/*
 * Implement Orion USB controller specification guidelines
 */
static void orion_usb_phy_v1_setup(struct usb_hcd *hcd)
{
	/* The below GLs are according to the Orion Errata document */
	/*
	 * Clear interrupt cause and mask
	 */
	wrl(USB_CAUSE, 0);
	wrl(USB_MASK, 0);

	/*
	 * Reset controller
	 */
	wrl(USB_CMD, rdl(USB_CMD) | 0x2);
	while (rdl(USB_CMD) & 0x2);

	/*
	 * GL# USB-10: Set IPG for non start of frame packets
	 * Bits[14:8]=0xc
	 */
	wrl(USB_IPG, (rdl(USB_IPG) & ~0x7f00) | 0xc00);

	/*
	 * GL# USB-9: USB 2.0 Power Control
	 * BG_VSEL[7:6]=0x1
	 */
	wrl(USB_PHY_PWR_CTRL, (rdl(USB_PHY_PWR_CTRL) & ~0xc0)| 0x40);

	/*
	 * GL# USB-1: USB PHY Tx Control - force calibration to '8'
	 * TXDATA_BLOCK_EN[21]=0x1, EXT_RCAL_EN[13]=0x1, IMP_CAL[6:3]=0x8
	 */
	wrl(USB_PHY_TX_CTRL, (rdl(USB_PHY_TX_CTRL) & ~0x78) | 0x202040);

	/*
	 * GL# USB-3 GL# USB-9: USB PHY Rx Control
	 * RXDATA_BLOCK_LENGHT[31:30]=0x3, EDGE_DET_SEL[27:26]=0,
	 * CDR_FASTLOCK_EN[21]=0, DISCON_THRESHOLD[9:8]=0, SQ_THRESH[7:4]=0x1
	 */
	wrl(USB_PHY_RX_CTRL, (rdl(USB_PHY_RX_CTRL) & ~0xc2003f0) | 0xc0000010);

	/*
	 * GL# USB-3 GL# USB-9: USB PHY IVREF Control
	 * PLLVDD12[1:0]=0x2, RXVDD[5:4]=0x3, Reserved[19]=0
	 */
	wrl(USB_PHY_IVREF_CTRL, (rdl(USB_PHY_IVREF_CTRL) & ~0x80003 ) | 0x32);

	/*
	 * GL# USB-3 GL# USB-9: USB PHY Test Group Control
	 * REG_FIFO_SQ_RST[15]=0
	 */
	wrl(USB_PHY_TST_GRP_CTRL, rdl(USB_PHY_TST_GRP_CTRL) & ~0x8000);

	/*
	 * Stop and reset controller
	 */
	wrl(USB_CMD, rdl(USB_CMD) & ~0x1);
	wrl(USB_CMD, rdl(USB_CMD) | 0x2);
	while (rdl(USB_CMD) & 0x2);

	/*
	 * GL# USB-5 Streaming disable REG_USB_MODE[4]=1
	 * TBD: This need to be done after each reset!
	 * GL# USB-4 Setup USB Host mode
	 */
	wrl(USB_MODE, 0x13);
}

static int ehci_orion_setup(struct usb_hcd *hcd)
{
	struct ehci_hcd *ehci = hcd_to_ehci(hcd);
	int retval;

	hcd->has_tt = 1;

	retval = ehci_halt(ehci);
	if (retval)
		return retval;

	/*
	 * data structure init
	 */
	retval = ehci_init(hcd);
	if (retval)
		return retval;

	ehci_reset(ehci);

	ehci_port_power(ehci, 0);

	return retval;
}

static const struct hc_driver ehci_orion_hc_driver = {
	.description = hcd_name,
	.product_desc = "Marvell Orion EHCI",
	.hcd_priv_size = sizeof(struct ehci_hcd),

	/*
	 * generic hardware linkage
	 */
	.irq = ehci_irq,
	.flags = HCD_MEMORY | HCD_USB2,

	/*
	 * basic lifecycle operations
	 */
	.reset = ehci_orion_setup,
	.start = ehci_run,
	.stop = ehci_stop,
	.shutdown = ehci_shutdown,

	/*
	 * managing i/o requests and associated device resources
	 */
	.urb_enqueue = ehci_urb_enqueue,
	.urb_dequeue = ehci_urb_dequeue,
	.endpoint_disable = ehci_endpoint_disable,
	.endpoint_reset = ehci_endpoint_reset,

	/*
	 * scheduling support
	 */
	.get_frame_number = ehci_get_frame,

	/*
	 * root hub support
	 */
	.hub_status_data = ehci_hub_status_data,
	.hub_control = ehci_hub_control,
	.bus_suspend = ehci_bus_suspend,
	.bus_resume = ehci_bus_resume,
	.relinquish_port = ehci_relinquish_port,
	.port_handed_over = ehci_port_handed_over,

	.clear_tt_buffer_complete = ehci_clear_tt_buffer_complete,
};

static void __init
ehci_orion_conf_mbus_windows(struct usb_hcd *hcd,
				struct mbus_dram_target_info *dram)
{
	int i;

	for (i = 0; i < 4; i++) {
		wrl(USB_WINDOW_CTRL(i), 0);
		wrl(USB_WINDOW_BASE(i), 0);
	}

	for (i = 0; i < dram->num_cs; i++) {
		struct mbus_dram_window *cs = dram->cs + i;

		wrl(USB_WINDOW_CTRL(i), ((cs->size - 1) & 0xffff0000) |
					(cs->mbus_attr << 8) |
					(dram->mbus_dram_target_id << 4) | 1);
		wrl(USB_WINDOW_BASE(i), cs->base);
	}
}

static int __devinit ehci_orion_drv_probe(struct platform_device *pdev)
{
	struct orion_ehci_data *pd = pdev->dev.platform_data;
	struct resource *res;
	struct usb_hcd *hcd;
	struct ehci_hcd *ehci;
	void __iomem *regs;
	int irq, err;

	if (usb_disabled())
		return -ENODEV;

	pr_debug("Initializing Orion-SoC USB Host Controller\n");

	irq = platform_get_irq(pdev, 0);
	if (irq <= 0) {
		dev_err(&pdev->dev,
			"Found HC with no IRQ. Check %s setup!\n",
			dev_name(&pdev->dev));
		err = -ENODEV;
		goto err1;
	}

	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	if (!res) {
		dev_err(&pdev->dev,
			"Found HC with no register addr. Check %s setup!\n",
			dev_name(&pdev->dev));
		err = -ENODEV;
		goto err1;
	}

	if (!request_mem_region(res->start, resource_size(res),
				ehci_orion_hc_driver.description)) {
		dev_dbg(&pdev->dev, "controller already in use\n");
		err = -EBUSY;
		goto err1;
	}

	regs = ioremap(res->start, resource_size(res));
	if (regs == NULL) {
		dev_dbg(&pdev->dev, "error mapping memory\n");
		err = -EFAULT;
		goto err2;
	}

	hcd = usb_create_hcd(&ehci_orion_hc_driver,
			&pdev->dev, dev_name(&pdev->dev));
	if (!hcd) {
		err = -ENOMEM;
		goto err3;
	}

	hcd->rsrc_start = res->start;
	hcd->rsrc_len = resource_size(res);
	hcd->regs = regs;

	ehci = hcd_to_ehci(hcd);
	ehci->caps = hcd->regs + 0x100;
	ehci->regs = hcd->regs + 0x100 +
		HC_LENGTH(ehci, ehci_readl(ehci, &ehci->caps->hc_capbase));
	ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params);
	hcd->has_tt = 1;
	ehci->sbrn = 0x20;

	/*
	 * (Re-)program MBUS remapping windows if we are asked to.
	 */
	if (pd != NULL && pd->dram != NULL)
		ehci_orion_conf_mbus_windows(hcd, pd->dram);

	/*
	 * setup Orion USB controller.
	 */
	switch (pd->phy_version) {
	case EHCI_PHY_NA:	/* dont change USB phy settings */
		break;
	case EHCI_PHY_ORION:
		orion_usb_phy_v1_setup(hcd);
		break;
	case EHCI_PHY_DD:
	case EHCI_PHY_KW:
	default:
		printk(KERN_WARNING "Orion ehci -USB phy version isn't supported.\n");
	}

	err = usb_add_hcd(hcd, irq, IRQF_SHARED | IRQF_DISABLED);
	if (err)
		goto err4;

	return 0;

err4:
	usb_put_hcd(hcd);
err3:
	iounmap(regs);
err2:
	release_mem_region(res->start, resource_size(res));
err1:
	dev_err(&pdev->dev, "init %s fail, %d\n",
		dev_name(&pdev->dev), err);

	return err;
}

static int __exit ehci_orion_drv_remove(struct platform_device *pdev)
{
	struct usb_hcd *hcd = platform_get_drvdata(pdev);

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

	return 0;
}

MODULE_ALIAS("platform:orion-ehci");

static struct platform_driver ehci_orion_driver = {
	.probe		= ehci_orion_drv_probe,
	.remove		= __exit_p(ehci_orion_drv_remove),
	.shutdown	= usb_hcd_platform_shutdown,
	.driver.name	= "orion-ehci",
};
Commit	Line	Data
e96ffe2f TP	1	/*
	2	* drivers/usb/host/ehci-orion.c
	3	*
	4	* Tzachi Perelstein <tzachi@marvell.com>
	5	*
	6	* This file is licensed under the terms of the GNU General Public
	7	* License version 2. This program is licensed "as is" without any
	8	* warranty of any kind, whether express or implied.
	9	*/
	10
	11	#include <linux/kernel.h>
	12	#include <linux/module.h>
	13	#include <linux/platform_device.h>
92aecfa9	14	#include <linux/mbus.h>
6f088f1d	15	#include <plat/ehci-orion.h>
e96ffe2f TP	16
	17	#define rdl(off) __raw_readl(hcd->regs + (off))
	18	#define wrl(off, val) __raw_writel((val), hcd->regs + (off))
	19
e96ffe2f TP	20	#define USB_CMD 0x140
e96ffe2f TP	21	#define USB_MODE 0x1a8
92aecfa9 LB	22	#define USB_CAUSE 0x310
	23	#define USB_MASK 0x314
	24	#define USB_WINDOW_CTRL(i) (0x320 + ((i) << 4))
	25	#define USB_WINDOW_BASE(i) (0x324 + ((i) << 4))
e96ffe2f TP	26	#define USB_IPG 0x360
	27	#define USB_PHY_PWR_CTRL 0x400
	28	#define USB_PHY_TX_CTRL 0x420
	29	#define USB_PHY_RX_CTRL 0x430
	30	#define USB_PHY_IVREF_CTRL 0x440
	31	#define USB_PHY_TST_GRP_CTRL 0x450
	32
	33	/*
	34	* Implement Orion USB controller specification guidelines
	35	*/
fb6f5529	36	static void orion_usb_phy_v1_setup(struct usb_hcd *hcd)
e96ffe2f	37	{
fb6f5529	38	/* The below GLs are according to the Orion Errata document */
e96ffe2f TP	39	/*
	40	* Clear interrupt cause and mask
	41	*/
	42	wrl(USB_CAUSE, 0);
	43	wrl(USB_MASK, 0);
	44
	45	/*
	46	* Reset controller
	47	*/
	48	wrl(USB_CMD, rdl(USB_CMD) \| 0x2);
	49	while (rdl(USB_CMD) & 0x2);
	50
	51	/*
	52	* GL# USB-10: Set IPG for non start of frame packets
	53	* Bits[14:8]=0xc
	54	*/
	55	wrl(USB_IPG, (rdl(USB_IPG) & ~0x7f00) \| 0xc00);
	56
	57	/*
	58	* GL# USB-9: USB 2.0 Power Control
	59	* BG_VSEL[7:6]=0x1
	60	*/
	61	wrl(USB_PHY_PWR_CTRL, (rdl(USB_PHY_PWR_CTRL) & ~0xc0)\| 0x40);
	62
	63	/*
	64	* GL# USB-1: USB PHY Tx Control - force calibration to '8'
	65	* TXDATA_BLOCK_EN[21]=0x1, EXT_RCAL_EN[13]=0x1, IMP_CAL[6:3]=0x8
	66	*/
	67	wrl(USB_PHY_TX_CTRL, (rdl(USB_PHY_TX_CTRL) & ~0x78) \| 0x202040);
	68
	69	/*
	70	* GL# USB-3 GL# USB-9: USB PHY Rx Control
	71	* RXDATA_BLOCK_LENGHT[31:30]=0x3, EDGE_DET_SEL[27:26]=0,
	72	* CDR_FASTLOCK_EN[21]=0, DISCON_THRESHOLD[9:8]=0, SQ_THRESH[7:4]=0x1
	73	*/
	74	wrl(USB_PHY_RX_CTRL, (rdl(USB_PHY_RX_CTRL) & ~0xc2003f0) \| 0xc0000010);
	75
	76	/*
	77	* GL# USB-3 GL# USB-9: USB PHY IVREF Control
	78	* PLLVDD12[1:0]=0x2, RXVDD[5:4]=0x3, Reserved[19]=0
	79	*/
	80	wrl(USB_PHY_IVREF_CTRL, (rdl(USB_PHY_IVREF_CTRL) & ~0x80003 ) \| 0x32);
	81
	82	/*
	83	* GL# USB-3 GL# USB-9: USB PHY Test Group Control
	84	* REG_FIFO_SQ_RST[15]=0
	85	*/
	86	wrl(USB_PHY_TST_GRP_CTRL, rdl(USB_PHY_TST_GRP_CTRL) & ~0x8000);
	87
	88	/*
	89	* Stop and reset controller
	90	*/
	91	wrl(USB_CMD, rdl(USB_CMD) & ~0x1);
	92	wrl(USB_CMD, rdl(USB_CMD) \| 0x2);
	93	while (rdl(USB_CMD) & 0x2);
	94
	95	/*
	96	* GL# USB-5 Streaming disable REG_USB_MODE[4]=1
	97	* TBD: This need to be done after each reset!
	98	* GL# USB-4 Setup USB Host mode
	99	*/
	100	wrl(USB_MODE, 0x13);
	101	}
	102
103	static int ehci_orion_setup(struct usb_hcd *hcd)
104	{
105	struct ehci_hcd *ehci = hcd_to_ehci(hcd);
106	int retval;
107
bcf40815 MC	108	hcd->has_tt = 1;
bcf40815 MC	109
e96ffe2f TP	110	retval = ehci_halt(ehci);
	111	if (retval)
	112	return retval;
	113
	114	/*
	115	* data structure init
	116	*/
	117	retval = ehci_init(hcd);
	118	if (retval)
	119	return retval;
	120
bcf40815	121	ehci_reset(ehci);
129bd474	122
e96ffe2f TP	123	ehci_port_power(ehci, 0);
	124
	125	return retval;
	126	}
	127
	128	static const struct hc_driver ehci_orion_hc_driver = {
	129	.description = hcd_name,
	130	.product_desc = "Marvell Orion EHCI",
	131	.hcd_priv_size = sizeof(struct ehci_hcd),
	132
	133	/*
	134	* generic hardware linkage
	135	*/
	136	.irq = ehci_irq,
	137	.flags = HCD_MEMORY \| HCD_USB2,
	138
	139	/*
	140	* basic lifecycle operations
	141	*/
	142	.reset = ehci_orion_setup,
	143	.start = ehci_run,
e96ffe2f TP	144	.stop = ehci_stop,
	145	.shutdown = ehci_shutdown,
	146
	147	/*
	148	* managing i/o requests and associated device resources
	149	*/
	150	.urb_enqueue = ehci_urb_enqueue,
	151	.urb_dequeue = ehci_urb_dequeue,
	152	.endpoint_disable = ehci_endpoint_disable,
b18ffd49	153	.endpoint_reset = ehci_endpoint_reset,
e96ffe2f TP	154
	155	/*
	156	* scheduling support
	157	*/
	158	.get_frame_number = ehci_get_frame,
	159
	160	/*
	161	* root hub support
	162	*/
	163	.hub_status_data = ehci_hub_status_data,
	164	.hub_control = ehci_hub_control,
	165	.bus_suspend = ehci_bus_suspend,
	166	.bus_resume = ehci_bus_resume,
a8e51775	167	.relinquish_port = ehci_relinquish_port,
3a31155c	168	.port_handed_over = ehci_port_handed_over,
914b7012 AS	169
914b7012 AS	170	.clear_tt_buffer_complete = ehci_clear_tt_buffer_complete,
e96ffe2f TP	171	};
e96ffe2f TP	172
92aecfa9 LB	173	static void __init
	174	ehci_orion_conf_mbus_windows(struct usb_hcd *hcd,
	175	struct mbus_dram_target_info *dram)
	176	{
	177	int i;
	178
	179	for (i = 0; i < 4; i++) {
	180	wrl(USB_WINDOW_CTRL(i), 0);
	181	wrl(USB_WINDOW_BASE(i), 0);
	182	}
	183
	184	for (i = 0; i < dram->num_cs; i++) {
	185	struct mbus_dram_window *cs = dram->cs + i;
	186
	187	wrl(USB_WINDOW_CTRL(i), ((cs->size - 1) & 0xffff0000) \|
	188	(cs->mbus_attr << 8) \|
	189	(dram->mbus_dram_target_id << 4) \| 1);
	190	wrl(USB_WINDOW_BASE(i), cs->base);
	191	}
	192	}
	193
dc2f2b75	194	static int __devinit ehci_orion_drv_probe(struct platform_device *pdev)
e96ffe2f	195	{
92aecfa9	196	struct orion_ehci_data *pd = pdev->dev.platform_data;
e96ffe2f TP	197	struct resource *res;
	198	struct usb_hcd *hcd;
	199	struct ehci_hcd *ehci;
	200	void __iomem *regs;
	201	int irq, err;
	202
	203	if (usb_disabled())
	204	return -ENODEV;
	205
	206	pr_debug("Initializing Orion-SoC USB Host Controller\n");
	207
	208	irq = platform_get_irq(pdev, 0);
	209	if (irq <= 0) {
	210	dev_err(&pdev->dev,
	211	"Found HC with no IRQ. Check %s setup!\n",
7071a3ce	212	dev_name(&pdev->dev));
e96ffe2f TP	213	err = -ENODEV;
	214	goto err1;
	215	}
	216
	217	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	218	if (!res) {
	219	dev_err(&pdev->dev,
	220	"Found HC with no register addr. Check %s setup!\n",
7071a3ce	221	dev_name(&pdev->dev));
e96ffe2f TP	222	err = -ENODEV;
	223	goto err1;
	224	}
	225
5672b7e6	226	if (!request_mem_region(res->start, resource_size(res),
e96ffe2f TP	227	ehci_orion_hc_driver.description)) {
	228	dev_dbg(&pdev->dev, "controller already in use\n");
	229	err = -EBUSY;
	230	goto err1;
	231	}
	232
5672b7e6	233	regs = ioremap(res->start, resource_size(res));
e96ffe2f TP	234	if (regs == NULL) {
	235	dev_dbg(&pdev->dev, "error mapping memory\n");
	236	err = -EFAULT;
	237	goto err2;
	238	}
	239
	240	hcd = usb_create_hcd(&ehci_orion_hc_driver,
7071a3ce	241	&pdev->dev, dev_name(&pdev->dev));
e96ffe2f TP	242	if (!hcd) {
	243	err = -ENOMEM;
	244	goto err3;
	245	}
	246
	247	hcd->rsrc_start = res->start;
5672b7e6	248	hcd->rsrc_len = resource_size(res);
e96ffe2f TP	249	hcd->regs = regs;
	250
	251	ehci = hcd_to_ehci(hcd);
	252	ehci->caps = hcd->regs + 0x100;
	253	ehci->regs = hcd->regs + 0x100 +
c430131a	254	HC_LENGTH(ehci, ehci_readl(ehci, &ehci->caps->hc_capbase));
e96ffe2f	255	ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params);
a8e51775	256	hcd->has_tt = 1;
e96ffe2f TP	257	ehci->sbrn = 0x20;
e96ffe2f TP	258
92aecfa9 LB	259	/*
	260	* (Re-)program MBUS remapping windows if we are asked to.
	261	*/
	262	if (pd != NULL && pd->dram != NULL)
	263	ehci_orion_conf_mbus_windows(hcd, pd->dram);
	264
e96ffe2f	265	/*
fb6f5529	266	* setup Orion USB controller.
e96ffe2f	267	*/
fb6f5529 RS	268	switch (pd->phy_version) {
	269	case EHCI_PHY_NA: /* dont change USB phy settings */
	270	break;
	271	case EHCI_PHY_ORION:
	272	orion_usb_phy_v1_setup(hcd);
	273	break;
	274	case EHCI_PHY_DD:
	275	case EHCI_PHY_KW:
	276	default:
	277	printk(KERN_WARNING "Orion ehci -USB phy version isn't supported.\n");
	278	}
e96ffe2f TP	279
	280	err = usb_add_hcd(hcd, irq, IRQF_SHARED \| IRQF_DISABLED);
	281	if (err)
	282	goto err4;
	283
	284	return 0;
	285
	286	err4:
	287	usb_put_hcd(hcd);
	288	err3:
	289	iounmap(regs);
	290	err2:
5672b7e6	291	release_mem_region(res->start, resource_size(res));
e96ffe2f TP	292	err1:
e96ffe2f TP	293	dev_err(&pdev->dev, "init %s fail, %d\n",
7071a3ce	294	dev_name(&pdev->dev), err);
e96ffe2f TP	295
	296	return err;
	297	}
	298
	299	static int __exit ehci_orion_drv_remove(struct platform_device *pdev)
	300	{
	301	struct usb_hcd *hcd = platform_get_drvdata(pdev);
	302
	303	usb_remove_hcd(hcd);
	304	iounmap(hcd->regs);
	305	release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
	306	usb_put_hcd(hcd);
	307
	308	return 0;
	309	}
	310
	311	MODULE_ALIAS("platform:orion-ehci");
	312
	313	static struct platform_driver ehci_orion_driver = {
	314	.probe = ehci_orion_drv_probe,
	315	.remove = __exit_p(ehci_orion_drv_remove),
	316	.shutdown = usb_hcd_platform_shutdown,
	317	.driver.name = "orion-ehci",
	318	};