[deliverable/linux.git] / drivers / usb / musb / ux500.c

/*
 * Copyright (C) 2010 ST-Ericsson AB
 * Mian Yousaf Kaukab <mian.yousaf.kaukab@stericsson.com>
 *
 * Based on omap2430.c
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/clk.h>
#include <linux/err.h>
#include <linux/io.h>
#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/usb/musb-ux500.h>

#include "musb_core.h"

static struct musb_hdrc_config ux500_musb_hdrc_config = {
	.multipoint	= true,
	.dyn_fifo	= true,
	.num_eps	= 16,
	.ram_bits	= 16,
};

struct ux500_glue {
	struct device		*dev;
	struct platform_device	*musb;
	struct clk		*clk;
};
#define glue_to_musb(g)	platform_get_drvdata(g->musb)

static void ux500_musb_set_vbus(struct musb *musb, int is_on)
{
	u8            devctl;
	unsigned long timeout = jiffies + msecs_to_jiffies(1000);
	/* HDRC controls CPEN, but beware current surges during device
	 * connect.  They can trigger transient overcurrent conditions
	 * that must be ignored.
	 */

	devctl = musb_readb(musb->mregs, MUSB_DEVCTL);

	if (is_on) {
		if (musb->xceiv->state == OTG_STATE_A_IDLE) {
			/* start the session */
			devctl |= MUSB_DEVCTL_SESSION;
			musb_writeb(musb->mregs, MUSB_DEVCTL, devctl);
			/*
			 * Wait for the musb to set as A device to enable the
			 * VBUS
			 */
			while (musb_readb(musb->mregs, MUSB_DEVCTL) & 0x80) {

				if (time_after(jiffies, timeout)) {
					dev_err(musb->controller,
					"configured as A device timeout");
					break;
				}
			}

		} else {
			musb->is_active = 1;
			musb->xceiv->otg->default_a = 1;
			musb->xceiv->state = OTG_STATE_A_WAIT_VRISE;
			devctl |= MUSB_DEVCTL_SESSION;
			MUSB_HST_MODE(musb);
		}
	} else {
		musb->is_active = 0;

		/* NOTE: we're skipping A_WAIT_VFALL -> A_IDLE and jumping
		 * right to B_IDLE...
		 */
		musb->xceiv->otg->default_a = 0;
		devctl &= ~MUSB_DEVCTL_SESSION;
		MUSB_DEV_MODE(musb);
	}
	musb_writeb(musb->mregs, MUSB_DEVCTL, devctl);

	/*
	 * Devctl values will be updated after vbus goes below
	 * session_valid. The time taken depends on the capacitance
	 * on VBUS line. The max discharge time can be upto 1 sec
	 * as per the spec. Typically on our platform, it is 200ms
	 */
	if (!is_on)
		mdelay(200);

	dev_dbg(musb->controller, "VBUS %s, devctl %02x\n",
		usb_otg_state_string(musb->xceiv->state),
		musb_readb(musb->mregs, MUSB_DEVCTL));
}

static int musb_otg_notifications(struct notifier_block *nb,
		unsigned long event, void *unused)
{
	struct musb *musb = container_of(nb, struct musb, nb);

	dev_dbg(musb->controller, "musb_otg_notifications %ld %s\n",
			event, usb_otg_state_string(musb->xceiv->state));

	switch (event) {
	case UX500_MUSB_ID:
		dev_dbg(musb->controller, "ID GND\n");
		ux500_musb_set_vbus(musb, 1);
		break;
	case UX500_MUSB_VBUS:
		dev_dbg(musb->controller, "VBUS Connect\n");
		break;
	case UX500_MUSB_NONE:
		dev_dbg(musb->controller, "VBUS Disconnect\n");
		if (is_host_active(musb))
			ux500_musb_set_vbus(musb, 0);
		else
			musb->xceiv->state = OTG_STATE_B_IDLE;
		break;
	default:
		dev_dbg(musb->controller, "ID float\n");
		return NOTIFY_DONE;
	}
	return NOTIFY_OK;
}

static irqreturn_t ux500_musb_interrupt(int irq, void *__hci)
{
	unsigned long   flags;
	irqreturn_t     retval = IRQ_NONE;
	struct musb     *musb = __hci;

	spin_lock_irqsave(&musb->lock, flags);

	musb->int_usb = musb_readb(musb->mregs, MUSB_INTRUSB);
	musb->int_tx = musb_readw(musb->mregs, MUSB_INTRTX);
	musb->int_rx = musb_readw(musb->mregs, MUSB_INTRRX);

	if (musb->int_usb || musb->int_tx || musb->int_rx)
		retval = musb_interrupt(musb);

	spin_unlock_irqrestore(&musb->lock, flags);

	return retval;
}

static int ux500_musb_init(struct musb *musb)
{
	int status;

	musb->xceiv = usb_get_phy(USB_PHY_TYPE_USB2);
	if (IS_ERR_OR_NULL(musb->xceiv)) {
		pr_err("HS USB OTG: no transceiver configured\n");
		return -EPROBE_DEFER;
	}

	musb->nb.notifier_call = musb_otg_notifications;
	status = usb_register_notifier(musb->xceiv, &musb->nb);
	if (status < 0) {
		dev_dbg(musb->controller, "notification register failed\n");
		return status;
	}

	musb->isr = ux500_musb_interrupt;

	return 0;
}

static int ux500_musb_exit(struct musb *musb)
{
	usb_unregister_notifier(musb->xceiv, &musb->nb);

	usb_put_phy(musb->xceiv);

	return 0;
}

static const struct musb_platform_ops ux500_ops = {
	.init		= ux500_musb_init,
	.exit		= ux500_musb_exit,

	.set_vbus	= ux500_musb_set_vbus,
};

static struct musb_hdrc_platform_data *
ux500_of_probe(struct platform_device *pdev, struct device_node *np)
{
	struct musb_hdrc_platform_data *pdata;
	const char *mode;
	int strlen;

	pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
	if (!pdata)
		return NULL;

	mode = of_get_property(np, "dr_mode", &strlen);
	if (!mode) {
		dev_err(&pdev->dev, "No 'dr_mode' property found\n");
		return NULL;
	}

	if (strlen > 0) {
		if (!strcmp(mode, "host"))
			pdata->mode = MUSB_HOST;
		if (!strcmp(mode, "otg"))
			pdata->mode = MUSB_OTG;
		if (!strcmp(mode, "peripheral"))
			pdata->mode = MUSB_PERIPHERAL;
	}

	return pdata;
}

static int ux500_probe(struct platform_device *pdev)
{
	struct resource musb_resources[2];
	struct musb_hdrc_platform_data	*pdata = pdev->dev.platform_data;
	struct device_node		*np = pdev->dev.of_node;
	struct platform_device		*musb;
	struct ux500_glue		*glue;
	struct clk			*clk;
	int				ret = -ENOMEM;

	if (!pdata) {
		if (np) {
			pdata = ux500_of_probe(pdev, np);
			if (!pdata)
				goto err0;

			pdev->dev.platform_data = pdata;
		} else {
			dev_err(&pdev->dev, "no pdata or device tree found\n");
			goto err0;
		}
	}

	glue = kzalloc(sizeof(*glue), GFP_KERNEL);
	if (!glue) {
		dev_err(&pdev->dev, "failed to allocate glue context\n");
		goto err0;
	}

	musb = platform_device_alloc("musb-hdrc", PLATFORM_DEVID_AUTO);
	if (!musb) {
		dev_err(&pdev->dev, "failed to allocate musb device\n");
		goto err1;
	}

	clk = clk_get(&pdev->dev, "usb");
	if (IS_ERR(clk)) {
		dev_err(&pdev->dev, "failed to get clock\n");
		ret = PTR_ERR(clk);
		goto err3;
	}

	ret = clk_prepare_enable(clk);
	if (ret) {
		dev_err(&pdev->dev, "failed to enable clock\n");
		goto err4;
	}

	musb->dev.parent		= &pdev->dev;
	musb->dev.dma_mask		= &pdev->dev.coherent_dma_mask;
	musb->dev.coherent_dma_mask	= pdev->dev.coherent_dma_mask;
	musb->dev.of_node		= pdev->dev.of_node;

	glue->dev			= &pdev->dev;
	glue->musb			= musb;
	glue->clk			= clk;

	pdata->platform_ops		= &ux500_ops;
	pdata->config 			= &ux500_musb_hdrc_config;

	platform_set_drvdata(pdev, glue);

	memset(musb_resources, 0x00, sizeof(*musb_resources) *
			ARRAY_SIZE(musb_resources));

	musb_resources[0].name = pdev->resource[0].name;
	musb_resources[0].start = pdev->resource[0].start;
	musb_resources[0].end = pdev->resource[0].end;
	musb_resources[0].flags = pdev->resource[0].flags;

	musb_resources[1].name = pdev->resource[1].name;
	musb_resources[1].start = pdev->resource[1].start;
	musb_resources[1].end = pdev->resource[1].end;
	musb_resources[1].flags = pdev->resource[1].flags;

	ret = platform_device_add_resources(musb, musb_resources,
			ARRAY_SIZE(musb_resources));
	if (ret) {
		dev_err(&pdev->dev, "failed to add resources\n");
		goto err5;
	}

	ret = platform_device_add_data(musb, pdata, sizeof(*pdata));
	if (ret) {
		dev_err(&pdev->dev, "failed to add platform_data\n");
		goto err5;
	}

	ret = platform_device_add(musb);
	if (ret) {
		dev_err(&pdev->dev, "failed to register musb device\n");
		goto err5;
	}

	return 0;

err5:
	clk_disable_unprepare(clk);

err4:
	clk_put(clk);

err3:
	platform_device_put(musb);

err1:
	kfree(glue);

err0:
	return ret;
}

static int ux500_remove(struct platform_device *pdev)
{
	struct ux500_glue	*glue = platform_get_drvdata(pdev);

	platform_device_unregister(glue->musb);
	clk_disable_unprepare(glue->clk);
	clk_put(glue->clk);
	kfree(glue);

	return 0;
}

#ifdef CONFIG_PM
static int ux500_suspend(struct device *dev)
{
	struct ux500_glue	*glue = dev_get_drvdata(dev);
	struct musb		*musb = glue_to_musb(glue);

	usb_phy_set_suspend(musb->xceiv, 1);
	clk_disable_unprepare(glue->clk);

	return 0;
}

static int ux500_resume(struct device *dev)
{
	struct ux500_glue	*glue = dev_get_drvdata(dev);
	struct musb		*musb = glue_to_musb(glue);
	int			ret;

	ret = clk_prepare_enable(glue->clk);
	if (ret) {
		dev_err(dev, "failed to enable clock\n");
		return ret;
	}

	usb_phy_set_suspend(musb->xceiv, 0);

	return 0;
}

static const struct dev_pm_ops ux500_pm_ops = {
	.suspend	= ux500_suspend,
	.resume		= ux500_resume,
};

#define DEV_PM_OPS	(&ux500_pm_ops)
#else
#define DEV_PM_OPS	NULL
#endif

static const struct of_device_id ux500_match[] = {
        { .compatible = "stericsson,db8500-musb", },
        {}
};

static struct platform_driver ux500_driver = {
	.probe		= ux500_probe,
	.remove		= ux500_remove,
	.driver		= {
		.name	= "musb-ux500",
		.pm	= DEV_PM_OPS,
		.of_match_table = ux500_match,
	},
};

MODULE_DESCRIPTION("UX500 MUSB Glue Layer");
MODULE_AUTHOR("Mian Yousaf Kaukab <mian.yousaf.kaukab@stericsson.com>");
MODULE_LICENSE("GPL v2");
module_platform_driver(ux500_driver);
Commit	Line	Data
4bc36fd3 MYK	1	/*
	2	* Copyright (C) 2010 ST-Ericsson AB
	3	* Mian Yousaf Kaukab <mian.yousaf.kaukab@stericsson.com>
	4	*
	5	* Based on omap2430.c
	6	*
	7	* This program is free software; you can redistribute it and/or modify
	8	* it under the terms of the GNU General Public License as published by
	9	* the Free Software Foundation; either version 2 of the License, or
	10	* (at your option) any later version.
	11	*
	12	* This program is distributed in the hope that it will be useful,
	13	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	14	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	15	* GNU General Public License for more details.
	16	*
	17	* You should have received a copy of the GNU General Public License
	18	* along with this program; if not, write to the Free Software
	19	* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
	20	*/
	21
	22	#include <linux/module.h>
	23	#include <linux/kernel.h>
	24	#include <linux/init.h>
	25	#include <linux/clk.h>
ded017ee	26	#include <linux/err.h>
4bc36fd3	27	#include <linux/io.h>
313bdb11	28	#include <linux/of.h>
4bc36fd3	29	#include <linux/platform_device.h>
af6882be	30	#include <linux/usb/musb-ux500.h>
4bc36fd3 MYK	31
	32	#include "musb_core.h"
	33
a20b1b79 LJ	34	static struct musb_hdrc_config ux500_musb_hdrc_config = {
	35	.multipoint = true,
	36	.dyn_fifo = true,
	37	.num_eps = 16,
	38	.ram_bits = 16,
	39	};
	40
4bc36fd3 MYK	41	struct ux500_glue {
	42	struct device *dev;
	43	struct platform_device *musb;
	44	struct clk *clk;
	45	};
	46	#define glue_to_musb(g) platform_get_drvdata(g->musb)
	47
996a9d26 FB	48	static void ux500_musb_set_vbus(struct musb *musb, int is_on)
	49	{
	50	u8 devctl;
	51	unsigned long timeout = jiffies + msecs_to_jiffies(1000);
	52	/* HDRC controls CPEN, but beware current surges during device
	53	* connect. They can trigger transient overcurrent conditions
	54	* that must be ignored.
	55	*/
	56
	57	devctl = musb_readb(musb->mregs, MUSB_DEVCTL);
	58
	59	if (is_on) {
	60	if (musb->xceiv->state == OTG_STATE_A_IDLE) {
	61	/* start the session */
	62	devctl \|= MUSB_DEVCTL_SESSION;
	63	musb_writeb(musb->mregs, MUSB_DEVCTL, devctl);
	64	/*
	65	* Wait for the musb to set as A device to enable the
	66	* VBUS
	67	*/
	68	while (musb_readb(musb->mregs, MUSB_DEVCTL) & 0x80) {
	69
	70	if (time_after(jiffies, timeout)) {
	71	dev_err(musb->controller,
	72	"configured as A device timeout");
	73	break;
	74	}
	75	}
	76
	77	} else {
	78	musb->is_active = 1;
	79	musb->xceiv->otg->default_a = 1;
	80	musb->xceiv->state = OTG_STATE_A_WAIT_VRISE;
	81	devctl \|= MUSB_DEVCTL_SESSION;
	82	MUSB_HST_MODE(musb);
	83	}
	84	} else {
	85	musb->is_active = 0;
	86
	87	/* NOTE: we're skipping A_WAIT_VFALL -> A_IDLE and jumping
	88	* right to B_IDLE...
	89	*/
	90	musb->xceiv->otg->default_a = 0;
	91	devctl &= ~MUSB_DEVCTL_SESSION;
	92	MUSB_DEV_MODE(musb);
	93	}
	94	musb_writeb(musb->mregs, MUSB_DEVCTL, devctl);
	95
	96	/*
	97	* Devctl values will be updated after vbus goes below
	98	* session_valid. The time taken depends on the capacitance
	99	* on VBUS line. The max discharge time can be upto 1 sec
	100	* as per the spec. Typically on our platform, it is 200ms
	101	*/
	102	if (!is_on)
	103	mdelay(200);
	104
	105	dev_dbg(musb->controller, "VBUS %s, devctl %02x\n",
	106	usb_otg_state_string(musb->xceiv->state),
	107	musb_readb(musb->mregs, MUSB_DEVCTL));
	108	}
	109
0135522c FB	110	static int musb_otg_notifications(struct notifier_block *nb,
	111	unsigned long event, void *unused)
	112	{
	113	struct musb *musb = container_of(nb, struct musb, nb);
	114
	115	dev_dbg(musb->controller, "musb_otg_notifications %ld %s\n",
	116	event, usb_otg_state_string(musb->xceiv->state));
	117
	118	switch (event) {
af6882be	119	case UX500_MUSB_ID:
0135522c FB	120	dev_dbg(musb->controller, "ID GND\n");
	121	ux500_musb_set_vbus(musb, 1);
	122	break;
af6882be	123	case UX500_MUSB_VBUS:
0135522c	124	dev_dbg(musb->controller, "VBUS Connect\n");
0135522c	125	break;
af6882be	126	case UX500_MUSB_NONE:
0135522c FB	127	dev_dbg(musb->controller, "VBUS Disconnect\n");
	128	if (is_host_active(musb))
	129	ux500_musb_set_vbus(musb, 0);
	130	else
	131	musb->xceiv->state = OTG_STATE_B_IDLE;
	132	break;
	133	default:
	134	dev_dbg(musb->controller, "ID float\n");
	135	return NOTIFY_DONE;
	136	}
	137	return NOTIFY_OK;
	138	}
	139
baef653a PDS	140	static irqreturn_t ux500_musb_interrupt(int irq, void *__hci)
	141	{
	142	unsigned long flags;
	143	irqreturn_t retval = IRQ_NONE;
	144	struct musb *musb = __hci;
	145
	146	spin_lock_irqsave(&musb->lock, flags);
	147
	148	musb->int_usb = musb_readb(musb->mregs, MUSB_INTRUSB);
	149	musb->int_tx = musb_readw(musb->mregs, MUSB_INTRTX);
	150	musb->int_rx = musb_readw(musb->mregs, MUSB_INTRRX);
	151
	152	if (musb->int_usb \|\| musb->int_tx \|\| musb->int_rx)
	153	retval = musb_interrupt(musb);
	154
	155	spin_unlock_irqrestore(&musb->lock, flags);
	156
	157	return retval;
	158	}
	159
4bc36fd3 MYK	160	static int ux500_musb_init(struct musb *musb)
4bc36fd3 MYK	161	{
0135522c FB	162	int status;
0135522c FB	163
662dca54	164	musb->xceiv = usb_get_phy(USB_PHY_TYPE_USB2);
ded017ee	165	if (IS_ERR_OR_NULL(musb->xceiv)) {
4bc36fd3	166	pr_err("HS USB OTG: no transceiver configured\n");
25736e0c	167	return -EPROBE_DEFER;
4bc36fd3 MYK	168	}
4bc36fd3 MYK	169
0135522c FB	170	musb->nb.notifier_call = musb_otg_notifications;
	171	status = usb_register_notifier(musb->xceiv, &musb->nb);
	172	if (status < 0) {
	173	dev_dbg(musb->controller, "notification register failed\n");
	174	return status;
	175	}
	176
baef653a PDS	177	musb->isr = ux500_musb_interrupt;
baef653a PDS	178
4bc36fd3 MYK	179	return 0;
	180	}
	181
	182	static int ux500_musb_exit(struct musb *musb)
	183	{
0135522c FB	184	usb_unregister_notifier(musb->xceiv, &musb->nb);
0135522c FB	185
721002ec	186	usb_put_phy(musb->xceiv);
4bc36fd3 MYK	187
	188	return 0;
	189	}
	190
	191	static const struct musb_platform_ops ux500_ops = {
	192	.init = ux500_musb_init,
	193	.exit = ux500_musb_exit,
996a9d26 FB	194
996a9d26 FB	195	.set_vbus = ux500_musb_set_vbus,
4bc36fd3 MYK	196	};
4bc36fd3 MYK	197
313bdb11 LJ	198	static struct musb_hdrc_platform_data *
	199	ux500_of_probe(struct platform_device pdev, struct device_node np)
	200	{
	201	struct musb_hdrc_platform_data *pdata;
	202	const char *mode;
	203	int strlen;
	204
	205	pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
	206	if (!pdata)
	207	return NULL;
	208
	209	mode = of_get_property(np, "dr_mode", &strlen);
	210	if (!mode) {
	211	dev_err(&pdev->dev, "No 'dr_mode' property found\n");
	212	return NULL;
	213	}
	214
	215	if (strlen > 0) {
	216	if (!strcmp(mode, "host"))
	217	pdata->mode = MUSB_HOST;
	218	if (!strcmp(mode, "otg"))
	219	pdata->mode = MUSB_OTG;
	220	if (!strcmp(mode, "peripheral"))
	221	pdata->mode = MUSB_PERIPHERAL;
	222	}
	223
	224	return pdata;
	225	}
	226
41ac7b3a	227	static int ux500_probe(struct platform_device *pdev)
4bc36fd3	228	{
09fc7d22	229	struct resource musb_resources[2];
4bc36fd3	230	struct musb_hdrc_platform_data *pdata = pdev->dev.platform_data;
313bdb11	231	struct device_node *np = pdev->dev.of_node;
4bc36fd3 MYK	232	struct platform_device *musb;
	233	struct ux500_glue *glue;
	234	struct clk *clk;
4bc36fd3 MYK	235	int ret = -ENOMEM;
4bc36fd3 MYK	236
313bdb11 LJ	237	if (!pdata) {
	238	if (np) {
	239	pdata = ux500_of_probe(pdev, np);
	240	if (!pdata)
	241	goto err0;
	242
	243	pdev->dev.platform_data = pdata;
	244	} else {
	245	dev_err(&pdev->dev, "no pdata or device tree found\n");
	246	goto err0;
	247	}
	248	}
	249
4bc36fd3 MYK	250	glue = kzalloc(sizeof(*glue), GFP_KERNEL);
	251	if (!glue) {
	252	dev_err(&pdev->dev, "failed to allocate glue context\n");
	253	goto err0;
	254	}
	255
2f771164	256	musb = platform_device_alloc("musb-hdrc", PLATFORM_DEVID_AUTO);
4bc36fd3 MYK	257	if (!musb) {
4bc36fd3 MYK	258	dev_err(&pdev->dev, "failed to allocate musb device\n");
2f771164	259	goto err1;
4bc36fd3 MYK	260	}
	261
	262	clk = clk_get(&pdev->dev, "usb");
	263	if (IS_ERR(clk)) {
	264	dev_err(&pdev->dev, "failed to get clock\n");
	265	ret = PTR_ERR(clk);
65b3d52d	266	goto err3;
4bc36fd3 MYK	267	}
4bc36fd3 MYK	268
99d17cfa	269	ret = clk_prepare_enable(clk);
4bc36fd3 MYK	270	if (ret) {
4bc36fd3 MYK	271	dev_err(&pdev->dev, "failed to enable clock\n");
65b3d52d	272	goto err4;
4bc36fd3 MYK	273	}
	274
	275	musb->dev.parent = &pdev->dev;
1e6eebb4	276	musb->dev.dma_mask = &pdev->dev.coherent_dma_mask;
87266064	277	musb->dev.coherent_dma_mask = pdev->dev.coherent_dma_mask;
313bdb11	278	musb->dev.of_node = pdev->dev.of_node;
4bc36fd3 MYK	279
	280	glue->dev = &pdev->dev;
	281	glue->musb = musb;
	282	glue->clk = clk;
	283
	284	pdata->platform_ops = &ux500_ops;
a20b1b79	285	pdata->config = &ux500_musb_hdrc_config;
4bc36fd3 MYK	286
	287	platform_set_drvdata(pdev, glue);
	288
09fc7d22 FB	289	memset(musb_resources, 0x00, sizeof(musb_resources)
	290	ARRAY_SIZE(musb_resources));
	291
	292	musb_resources[0].name = pdev->resource[0].name;
	293	musb_resources[0].start = pdev->resource[0].start;
	294	musb_resources[0].end = pdev->resource[0].end;
	295	musb_resources[0].flags = pdev->resource[0].flags;
	296
	297	musb_resources[1].name = pdev->resource[1].name;
	298	musb_resources[1].start = pdev->resource[1].start;
	299	musb_resources[1].end = pdev->resource[1].end;
	300	musb_resources[1].flags = pdev->resource[1].flags;
	301
	302	ret = platform_device_add_resources(musb, musb_resources,
	303	ARRAY_SIZE(musb_resources));
4bc36fd3 MYK	304	if (ret) {
4bc36fd3 MYK	305	dev_err(&pdev->dev, "failed to add resources\n");
65b3d52d	306	goto err5;
4bc36fd3 MYK	307	}
	308
	309	ret = platform_device_add_data(musb, pdata, sizeof(*pdata));
	310	if (ret) {
	311	dev_err(&pdev->dev, "failed to add platform_data\n");
65b3d52d	312	goto err5;
4bc36fd3 MYK	313	}
	314
	315	ret = platform_device_add(musb);
	316	if (ret) {
	317	dev_err(&pdev->dev, "failed to register musb device\n");
65b3d52d	318	goto err5;
4bc36fd3 MYK	319	}
	320
	321	return 0;
	322
65b3d52d	323	err5:
99d17cfa	324	clk_disable_unprepare(clk);
4bc36fd3	325
65b3d52d	326	err4:
4bc36fd3 MYK	327	clk_put(clk);
4bc36fd3 MYK	328
65b3d52d	329	err3:
4bc36fd3 MYK	330	platform_device_put(musb);
	331
	332	err1:
	333	kfree(glue);
	334
	335	err0:
	336	return ret;
	337	}
	338
fb4e98ab	339	static int ux500_remove(struct platform_device *pdev)
4bc36fd3 MYK	340	{
	341	struct ux500_glue *glue = platform_get_drvdata(pdev);
	342
4b0de6f3	343	platform_device_unregister(glue->musb);
99d17cfa	344	clk_disable_unprepare(glue->clk);
4bc36fd3 MYK	345	clk_put(glue->clk);
	346	kfree(glue);
	347
	348	return 0;
	349	}
	350
	351	#ifdef CONFIG_PM
	352	static int ux500_suspend(struct device *dev)
	353	{
	354	struct ux500_glue *glue = dev_get_drvdata(dev);
	355	struct musb *musb = glue_to_musb(glue);
	356
b96d3b08	357	usb_phy_set_suspend(musb->xceiv, 1);
99d17cfa	358	clk_disable_unprepare(glue->clk);
4bc36fd3 MYK	359
	360	return 0;
	361	}
	362
	363	static int ux500_resume(struct device *dev)
	364	{
	365	struct ux500_glue *glue = dev_get_drvdata(dev);
	366	struct musb *musb = glue_to_musb(glue);
	367	int ret;
	368
99d17cfa	369	ret = clk_prepare_enable(glue->clk);
4bc36fd3 MYK	370	if (ret) {
	371	dev_err(dev, "failed to enable clock\n");
	372	return ret;
	373	}
	374
b96d3b08	375	usb_phy_set_suspend(musb->xceiv, 0);
4bc36fd3 MYK	376
	377	return 0;
	378	}
	379
	380	static const struct dev_pm_ops ux500_pm_ops = {
	381	.suspend = ux500_suspend,
	382	.resume = ux500_resume,
	383	};
	384
	385	#define DEV_PM_OPS (&ux500_pm_ops)
	386	#else
	387	#define DEV_PM_OPS NULL
	388	#endif
	389
313bdb11 LJ	390	static const struct of_device_id ux500_match[] = {
	391	{ .compatible = "stericsson,db8500-musb", },
	392	{}
	393	};
	394
4bc36fd3	395	static struct platform_driver ux500_driver = {
e9e8c85e	396	.probe = ux500_probe,
7690417d	397	.remove = ux500_remove,
4bc36fd3 MYK	398	.driver = {
	399	.name = "musb-ux500",
	400	.pm = DEV_PM_OPS,
313bdb11	401	.of_match_table = ux500_match,
4bc36fd3 MYK	402	},
	403	};
	404
	405	MODULE_DESCRIPTION("UX500 MUSB Glue Layer");
	406	MODULE_AUTHOR("Mian Yousaf Kaukab <mian.yousaf.kaukab@stericsson.com>");
	407	MODULE_LICENSE("GPL v2");
0e7090a6	408	module_platform_driver(ux500_driver);