[mirror_ubuntu-bionic-kernel.git] / drivers / usb / musb / omap2430.c

/*
 * Copyright (C) 2005-2007 by Texas Instruments
 * Some code has been taken from tusb6010.c
 * Copyrights for that are attributable to:
 * Copyright (C) 2006 Nokia Corporation
 * Tony Lindgren <tony@atomide.com>
 *
 * This file is part of the Inventra Controller Driver for Linux.
 *
 * The Inventra Controller Driver for Linux is free software; you
 * can redistribute it and/or modify it under the terms of the GNU
 * General Public License version 2 as published by the Free Software
 * Foundation.
 *
 * The Inventra Controller Driver for Linux 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 The Inventra Controller Driver for Linux ; if not,
 * write to the Free Software Foundation, Inc., 59 Temple Place,
 * Suite 330, Boston, MA  02111-1307  USA
 *
 */
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/init.h>
#include <linux/list.h>
#include <linux/clk.h>
#include <linux/io.h>
#include <linux/platform_device.h>
#include <linux/dma-mapping.h>

#include "musb_core.h"
#include "omap2430.h"

struct omap2430_glue {
	struct device		*dev;
	struct platform_device	*musb;
};

static struct timer_list musb_idle_timer;

static void musb_do_idle(unsigned long _musb)
{
	struct musb	*musb = (void *)_musb;
	unsigned long	flags;
#ifdef CONFIG_USB_MUSB_HDRC_HCD
	u8	power;
#endif
	u8	devctl;

	spin_lock_irqsave(&musb->lock, flags);

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

	switch (musb->xceiv->state) {
	case OTG_STATE_A_WAIT_BCON:
		devctl &= ~MUSB_DEVCTL_SESSION;
		musb_writeb(musb->mregs, MUSB_DEVCTL, devctl);

		devctl = musb_readb(musb->mregs, MUSB_DEVCTL);
		if (devctl & MUSB_DEVCTL_BDEVICE) {
			musb->xceiv->state = OTG_STATE_B_IDLE;
			MUSB_DEV_MODE(musb);
		} else {
			musb->xceiv->state = OTG_STATE_A_IDLE;
			MUSB_HST_MODE(musb);
		}
		break;
#ifdef CONFIG_USB_MUSB_HDRC_HCD
	case OTG_STATE_A_SUSPEND:
		/* finish RESUME signaling? */
		if (musb->port1_status & MUSB_PORT_STAT_RESUME) {
			power = musb_readb(musb->mregs, MUSB_POWER);
			power &= ~MUSB_POWER_RESUME;
			DBG(1, "root port resume stopped, power %02x\n", power);
			musb_writeb(musb->mregs, MUSB_POWER, power);
			musb->is_active = 1;
			musb->port1_status &= ~(USB_PORT_STAT_SUSPEND
						| MUSB_PORT_STAT_RESUME);
			musb->port1_status |= USB_PORT_STAT_C_SUSPEND << 16;
			usb_hcd_poll_rh_status(musb_to_hcd(musb));
			/* NOTE: it might really be A_WAIT_BCON ... */
			musb->xceiv->state = OTG_STATE_A_HOST;
		}
		break;
#endif
#ifdef CONFIG_USB_MUSB_HDRC_HCD
	case OTG_STATE_A_HOST:
		devctl = musb_readb(musb->mregs, MUSB_DEVCTL);
		if (devctl &  MUSB_DEVCTL_BDEVICE)
			musb->xceiv->state = OTG_STATE_B_IDLE;
		else
			musb->xceiv->state = OTG_STATE_A_WAIT_BCON;
#endif
	default:
		break;
	}
	spin_unlock_irqrestore(&musb->lock, flags);
}


static void omap2430_musb_try_idle(struct musb *musb, unsigned long timeout)
{
	unsigned long		default_timeout = jiffies + msecs_to_jiffies(3);
	static unsigned long	last_timer;

	if (timeout == 0)
		timeout = default_timeout;

	/* Never idle if active, or when VBUS timeout is not set as host */
	if (musb->is_active || ((musb->a_wait_bcon == 0)
			&& (musb->xceiv->state == OTG_STATE_A_WAIT_BCON))) {
		DBG(4, "%s active, deleting timer\n", otg_state_string(musb));
		del_timer(&musb_idle_timer);
		last_timer = jiffies;
		return;
	}

	if (time_after(last_timer, timeout)) {
		if (!timer_pending(&musb_idle_timer))
			last_timer = timeout;
		else {
			DBG(4, "Longer idle timer already pending, ignoring\n");
			return;
		}
	}
	last_timer = timeout;

	DBG(4, "%s inactive, for idle timer for %lu ms\n",
		otg_state_string(musb),
		(unsigned long)jiffies_to_msecs(timeout - jiffies));
	mod_timer(&musb_idle_timer, timeout);
}

static void omap2430_musb_enable(struct musb *musb)
{
}

static void omap2430_musb_disable(struct musb *musb)
{
}

static void omap2430_musb_set_vbus(struct musb *musb, int is_on)
{
	u8		devctl;
	/* 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) {
		musb->is_active = 1;
		musb->xceiv->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->default_a = 0;
		musb->xceiv->state = OTG_STATE_B_IDLE;
		devctl &= ~MUSB_DEVCTL_SESSION;

		MUSB_DEV_MODE(musb);
	}
	musb_writeb(musb->mregs, MUSB_DEVCTL, devctl);

	DBG(1, "VBUS %s, devctl %02x "
		/* otg %3x conf %08x prcm %08x */ "\n",
		otg_state_string(musb),
		musb_readb(musb->mregs, MUSB_DEVCTL));
}

static int omap2430_musb_resume(struct musb *musb);

static int omap2430_musb_set_mode(struct musb *musb, u8 musb_mode)
{
	u8	devctl = musb_readb(musb->mregs, MUSB_DEVCTL);

	devctl |= MUSB_DEVCTL_SESSION;
	musb_writeb(musb->mregs, MUSB_DEVCTL, devctl);

	return 0;
}

static int omap2430_musb_init(struct musb *musb)
{
	u32 l;
	struct device *dev = musb->controller;
	struct musb_hdrc_platform_data *plat = dev->platform_data;
	struct omap_musb_board_data *data = plat->board_data;

	/* We require some kind of external transceiver, hooked
	 * up through ULPI.  TWL4030-family PMICs include one,
	 * which needs a driver, drivers aren't always needed.
	 */
	musb->xceiv = otg_get_transceiver();
	if (!musb->xceiv) {
		pr_err("HS USB OTG: no transceiver configured\n");
		return -ENODEV;
	}

	omap2430_musb_resume(musb);

	l = musb_readl(musb->mregs, OTG_SYSCONFIG);
	l &= ~ENABLEWAKEUP;	/* disable wakeup */
	l &= ~NOSTDBY;		/* remove possible nostdby */
	l |= SMARTSTDBY;	/* enable smart standby */
	l &= ~AUTOIDLE;		/* disable auto idle */
	l &= ~NOIDLE;		/* remove possible noidle */
	l |= SMARTIDLE;		/* enable smart idle */
	/*
	 * MUSB AUTOIDLE don't work in 3430.
	 * Workaround by Richard Woodruff/TI
	 */
	if (!cpu_is_omap3430())
		l |= AUTOIDLE;		/* enable auto idle */
	musb_writel(musb->mregs, OTG_SYSCONFIG, l);

	l = musb_readl(musb->mregs, OTG_INTERFSEL);

	if (data->interface_type == MUSB_INTERFACE_UTMI) {
		/* OMAP4 uses Internal PHY GS70 which uses UTMI interface */
		l &= ~ULPI_12PIN;       /* Disable ULPI */
		l |= UTMI_8BIT;         /* Enable UTMI  */
	} else {
		l |= ULPI_12PIN;
	}

	musb_writel(musb->mregs, OTG_INTERFSEL, l);

	pr_debug("HS USB OTG: revision 0x%x, sysconfig 0x%02x, "
			"sysstatus 0x%x, intrfsel 0x%x, simenable  0x%x\n",
			musb_readl(musb->mregs, OTG_REVISION),
			musb_readl(musb->mregs, OTG_SYSCONFIG),
			musb_readl(musb->mregs, OTG_SYSSTATUS),
			musb_readl(musb->mregs, OTG_INTERFSEL),
			musb_readl(musb->mregs, OTG_SIMENABLE));

	if (is_host_enabled(musb))
		musb->board_set_vbus = omap2430_musb_set_vbus;

	setup_timer(&musb_idle_timer, musb_do_idle, (unsigned long) musb);

	return 0;
}

#ifdef CONFIG_PM
void musb_platform_save_context(struct musb *musb,
		struct musb_context_registers *musb_context)
{
	musb_context->otg_sysconfig = musb_readl(musb->mregs, OTG_SYSCONFIG);
	musb_context->otg_forcestandby = musb_readl(musb->mregs, OTG_FORCESTDBY);
}

void musb_platform_restore_context(struct musb *musb,
		struct musb_context_registers *musb_context)
{
	musb_writel(musb->mregs, OTG_SYSCONFIG, musb_context->otg_sysconfig);
	musb_writel(musb->mregs, OTG_FORCESTDBY, musb_context->otg_forcestandby);
}
#endif

static int omap2430_musb_suspend(struct musb *musb)
{
	u32 l;

	if (!musb->clock)
		return 0;

	/* in any role */
	l = musb_readl(musb->mregs, OTG_FORCESTDBY);
	l |= ENABLEFORCE;	/* enable MSTANDBY */
	musb_writel(musb->mregs, OTG_FORCESTDBY, l);

	l = musb_readl(musb->mregs, OTG_SYSCONFIG);
	l |= ENABLEWAKEUP;	/* enable wakeup */
	musb_writel(musb->mregs, OTG_SYSCONFIG, l);

	otg_set_suspend(musb->xceiv, 1);

	if (musb->set_clock)
		musb->set_clock(musb->clock, 0);
	else
		clk_disable(musb->clock);

	return 0;
}

static int omap2430_musb_resume(struct musb *musb)
{
	u32 l;

	if (!musb->clock)
		return 0;

	otg_set_suspend(musb->xceiv, 0);

	if (musb->set_clock)
		musb->set_clock(musb->clock, 1);
	else
		clk_enable(musb->clock);

	l = musb_readl(musb->mregs, OTG_SYSCONFIG);
	l &= ~ENABLEWAKEUP;	/* disable wakeup */
	musb_writel(musb->mregs, OTG_SYSCONFIG, l);

	l = musb_readl(musb->mregs, OTG_FORCESTDBY);
	l &= ~ENABLEFORCE;	/* disable MSTANDBY */
	musb_writel(musb->mregs, OTG_FORCESTDBY, l);

	return 0;
}

static int omap2430_musb_exit(struct musb *musb)
{

	omap2430_musb_suspend(musb);

	otg_put_transceiver(musb->xceiv);
	return 0;
}

const struct musb_platform_ops musb_ops = {
	.init		= omap2430_musb_init,
	.exit		= omap2430_musb_exit,

	.suspend	= omap2430_musb_suspend,
	.resume		= omap2430_musb_resume,

	.enable		= omap2430_musb_enable,
	.disable	= omap2430_musb_disable,

	.set_mode	= omap2430_musb_set_mode,
	.try_idle	= omap2430_musb_try_idle,

	.set_vbus	= omap2430_musb_set_vbus,
};

static u64 omap2430_dmamask = DMA_BIT_MASK(32);

static int __init omap2430_probe(struct platform_device *pdev)
{
	struct musb_hdrc_platform_data	*pdata = pdev->dev.platform_data;
	struct platform_device		*musb;
	struct omap2430_glue		*glue;

	int				ret = -ENOMEM;

	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", -1);
	if (!musb) {
		dev_err(&pdev->dev, "failed to allocate musb device\n");
		goto err1;
	}

	musb->dev.parent		= &pdev->dev;
	musb->dev.dma_mask		= &omap2430_dmamask;
	musb->dev.coherent_dma_mask	= omap2430_dmamask;

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

	platform_set_drvdata(pdev, glue);

	ret = platform_device_add_resources(musb, pdev->resource,
			pdev->num_resources);
	if (ret) {
		dev_err(&pdev->dev, "failed to add resources\n");
		goto err2;
	}

	ret = platform_device_add_data(musb, pdata, sizeof(*pdata));
	if (ret) {
		dev_err(&pdev->dev, "failed to add platform_data\n");
		goto err2;
	}

	ret = platform_device_add(musb);
	if (ret) {
		dev_err(&pdev->dev, "failed to register musb device\n");
		goto err2;
	}

	return 0;

err2:
	platform_device_put(musb);

err1:
	kfree(glue);

err0:
	return ret;
}

static int __exit omap2430_remove(struct platform_device *pdev)
{
	struct omap2430_glue		*glue = platform_get_drvdata(pdev);

	platform_device_del(glue->musb);
	platform_device_put(glue->musb);
	kfree(glue);

	return 0;
}

static struct platform_driver omap2430_driver = {
	.remove		= __exit_p(omap2430_remove),
	.driver		= {
		.name	= "musb-omap2430",
	},
};

MODULE_DESCRIPTION("OMAP2PLUS MUSB Glue Layer");
MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>");
MODULE_LICENSE("GPL v2");

static int __init omap2430_init(void)
{
	return platform_driver_probe(&omap2430_driver, omap2430_probe);
}
subsys_initcall(omap2430_init);

static void __exit omap2430_exit(void)
{
	platform_driver_unregister(&omap2430_driver);
}
module_exit(omap2430_exit);
Commit	Line	Data
550a7375 FB	1	/*
	2	* Copyright (C) 2005-2007 by Texas Instruments
	3	* Some code has been taken from tusb6010.c
	4	* Copyrights for that are attributable to:
	5	* Copyright (C) 2006 Nokia Corporation
550a7375 FB	6	* Tony Lindgren <tony@atomide.com>
	7	*
	8	* This file is part of the Inventra Controller Driver for Linux.
	9	*
	10	* The Inventra Controller Driver for Linux is free software; you
	11	* can redistribute it and/or modify it under the terms of the GNU
	12	* General Public License version 2 as published by the Free Software
	13	* Foundation.
	14	*
	15	* The Inventra Controller Driver for Linux is distributed in
	16	* the hope that it will be useful, but WITHOUT ANY WARRANTY;
	17	* without even the implied warranty of MERCHANTABILITY or
	18	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
	19	* License for more details.
	20	*
	21	* You should have received a copy of the GNU General Public License
	22	* along with The Inventra Controller Driver for Linux ; if not,
	23	* write to the Free Software Foundation, Inc., 59 Temple Place,
	24	* Suite 330, Boston, MA 02111-1307 USA
	25	*
	26	*/
	27	#include <linux/module.h>
	28	#include <linux/kernel.h>
	29	#include <linux/sched.h>
550a7375 FB	30	#include <linux/init.h>
	31	#include <linux/list.h>
	32	#include <linux/clk.h>
	33	#include <linux/io.h>
dc09886b FB	34	#include <linux/platform_device.h>
dc09886b FB	35	#include <linux/dma-mapping.h>
550a7375	36
550a7375 FB	37	#include "musb_core.h"
	38	#include "omap2430.h"
	39
a3cee12a FB	40	struct omap2430_glue {
	41	struct device *dev;
	42	struct platform_device *musb;
	43	};
	44
550a7375 FB	45	static struct timer_list musb_idle_timer;
	46
	47	static void musb_do_idle(unsigned long _musb)
	48	{
	49	struct musb musb = (void )_musb;
	50	unsigned long flags;
eef767b7	51	#ifdef CONFIG_USB_MUSB_HDRC_HCD
550a7375	52	u8 power;
eef767b7	53	#endif
550a7375 FB	54	u8 devctl;
550a7375 FB	55
550a7375 FB	56	spin_lock_irqsave(&musb->lock, flags);
550a7375 FB	57
71783e0d DB	58	devctl = musb_readb(musb->mregs, MUSB_DEVCTL);
71783e0d DB	59
84e250ff	60	switch (musb->xceiv->state) {
550a7375 FB	61	case OTG_STATE_A_WAIT_BCON:
	62	devctl &= ~MUSB_DEVCTL_SESSION;
	63	musb_writeb(musb->mregs, MUSB_DEVCTL, devctl);
	64
	65	devctl = musb_readb(musb->mregs, MUSB_DEVCTL);
	66	if (devctl & MUSB_DEVCTL_BDEVICE) {
84e250ff	67	musb->xceiv->state = OTG_STATE_B_IDLE;
550a7375 FB	68	MUSB_DEV_MODE(musb);
550a7375 FB	69	} else {
84e250ff	70	musb->xceiv->state = OTG_STATE_A_IDLE;
550a7375 FB	71	MUSB_HST_MODE(musb);
	72	}
	73	break;
	74	#ifdef CONFIG_USB_MUSB_HDRC_HCD
	75	case OTG_STATE_A_SUSPEND:
	76	/* finish RESUME signaling? */
	77	if (musb->port1_status & MUSB_PORT_STAT_RESUME) {
	78	power = musb_readb(musb->mregs, MUSB_POWER);
	79	power &= ~MUSB_POWER_RESUME;
	80	DBG(1, "root port resume stopped, power %02x\n", power);
	81	musb_writeb(musb->mregs, MUSB_POWER, power);
	82	musb->is_active = 1;
	83	musb->port1_status &= ~(USB_PORT_STAT_SUSPEND
	84	\| MUSB_PORT_STAT_RESUME);
	85	musb->port1_status \|= USB_PORT_STAT_C_SUSPEND << 16;
	86	usb_hcd_poll_rh_status(musb_to_hcd(musb));
	87	/* NOTE: it might really be A_WAIT_BCON ... */
84e250ff	88	musb->xceiv->state = OTG_STATE_A_HOST;
550a7375 FB	89	}
	90	break;
	91	#endif
	92	#ifdef CONFIG_USB_MUSB_HDRC_HCD
	93	case OTG_STATE_A_HOST:
	94	devctl = musb_readb(musb->mregs, MUSB_DEVCTL);
	95	if (devctl & MUSB_DEVCTL_BDEVICE)
84e250ff	96	musb->xceiv->state = OTG_STATE_B_IDLE;
550a7375	97	else
84e250ff	98	musb->xceiv->state = OTG_STATE_A_WAIT_BCON;
550a7375 FB	99	#endif
	100	default:
	101	break;
	102	}
	103	spin_unlock_irqrestore(&musb->lock, flags);
	104	}
	105
	106
743411b3	107	static void omap2430_musb_try_idle(struct musb *musb, unsigned long timeout)
550a7375 FB	108	{
	109	unsigned long default_timeout = jiffies + msecs_to_jiffies(3);
	110	static unsigned long last_timer;
	111
	112	if (timeout == 0)
	113	timeout = default_timeout;
	114
	115	/* Never idle if active, or when VBUS timeout is not set as host */
	116	if (musb->is_active \|\| ((musb->a_wait_bcon == 0)
84e250ff	117	&& (musb->xceiv->state == OTG_STATE_A_WAIT_BCON))) {
550a7375 FB	118	DBG(4, "%s active, deleting timer\n", otg_state_string(musb));
	119	del_timer(&musb_idle_timer);
	120	last_timer = jiffies;
	121	return;
	122	}
	123
	124	if (time_after(last_timer, timeout)) {
	125	if (!timer_pending(&musb_idle_timer))
	126	last_timer = timeout;
	127	else {
	128	DBG(4, "Longer idle timer already pending, ignoring\n");
	129	return;
	130	}
	131	}
	132	last_timer = timeout;
	133
	134	DBG(4, "%s inactive, for idle timer for %lu ms\n",
	135	otg_state_string(musb),
	136	(unsigned long)jiffies_to_msecs(timeout - jiffies));
	137	mod_timer(&musb_idle_timer, timeout);
	138	}
	139
743411b3	140	static void omap2430_musb_enable(struct musb *musb)
550a7375 FB	141	{
550a7375 FB	142	}
743411b3 FB	143
743411b3 FB	144	static void omap2430_musb_disable(struct musb *musb)
550a7375 FB	145	{
550a7375 FB	146	}
743411b3 FB	147
743411b3 FB	148	static void omap2430_musb_set_vbus(struct musb *musb, int is_on)
550a7375 FB	149	{
	150	u8 devctl;
	151	/* HDRC controls CPEN, but beware current surges during device
	152	* connect. They can trigger transient overcurrent conditions
	153	* that must be ignored.
	154	*/
	155
	156	devctl = musb_readb(musb->mregs, MUSB_DEVCTL);
	157
	158	if (is_on) {
	159	musb->is_active = 1;
84e250ff DB	160	musb->xceiv->default_a = 1;
84e250ff DB	161	musb->xceiv->state = OTG_STATE_A_WAIT_VRISE;
550a7375 FB	162	devctl \|= MUSB_DEVCTL_SESSION;
	163
	164	MUSB_HST_MODE(musb);
	165	} else {
	166	musb->is_active = 0;
	167
	168	/* NOTE: we're skipping A_WAIT_VFALL -> A_IDLE and
	169	* jumping right to B_IDLE...
	170	*/
	171
84e250ff DB	172	musb->xceiv->default_a = 0;
84e250ff DB	173	musb->xceiv->state = OTG_STATE_B_IDLE;
550a7375 FB	174	devctl &= ~MUSB_DEVCTL_SESSION;
	175
	176	MUSB_DEV_MODE(musb);
	177	}
	178	musb_writeb(musb->mregs, MUSB_DEVCTL, devctl);
	179
	180	DBG(1, "VBUS %s, devctl %02x "
	181	/* otg %3x conf %08x prcm %08x */ "\n",
	182	otg_state_string(musb),
	183	musb_readb(musb->mregs, MUSB_DEVCTL));
	184	}
550a7375	185
743411b3	186	static int omap2430_musb_resume(struct musb *musb);
550a7375	187
743411b3	188	static int omap2430_musb_set_mode(struct musb *musb, u8 musb_mode)
550a7375 FB	189	{
	190	u8 devctl = musb_readb(musb->mregs, MUSB_DEVCTL);
	191
	192	devctl \|= MUSB_DEVCTL_SESSION;
	193	musb_writeb(musb->mregs, MUSB_DEVCTL, devctl);
	194
96a274d1	195	return 0;
550a7375 FB	196	}
550a7375 FB	197
743411b3	198	static int omap2430_musb_init(struct musb *musb)
550a7375 FB	199	{
550a7375 FB	200	u32 l;
ea65df57 HK	201	struct device *dev = musb->controller;
	202	struct musb_hdrc_platform_data *plat = dev->platform_data;
	203	struct omap_musb_board_data *data = plat->board_data;
550a7375	204
84e250ff DB	205	/* We require some kind of external transceiver, hooked
	206	* up through ULPI. TWL4030-family PMICs include one,
	207	* which needs a driver, drivers aren't always needed.
	208	*/
	209	musb->xceiv = otg_get_transceiver();
	210	if (!musb->xceiv) {
	211	pr_err("HS USB OTG: no transceiver configured\n");
	212	return -ENODEV;
	213	}
	214
743411b3	215	omap2430_musb_resume(musb);
550a7375	216
8573e6a6	217	l = musb_readl(musb->mregs, OTG_SYSCONFIG);
550a7375 FB	218	l &= ~ENABLEWAKEUP; /* disable wakeup */
	219	l &= ~NOSTDBY; /* remove possible nostdby */
	220	l \|= SMARTSTDBY; /* enable smart standby */
	221	l &= ~AUTOIDLE; /* disable auto idle */
	222	l &= ~NOIDLE; /* remove possible noidle */
	223	l \|= SMARTIDLE; /* enable smart idle */
9a4b5e36 NM	224	/*
	225	* MUSB AUTOIDLE don't work in 3430.
	226	* Workaround by Richard Woodruff/TI
	227	*/
	228	if (!cpu_is_omap3430())
	229	l \|= AUTOIDLE; /* enable auto idle */
8573e6a6	230	musb_writel(musb->mregs, OTG_SYSCONFIG, l);
550a7375	231
8573e6a6	232	l = musb_readl(musb->mregs, OTG_INTERFSEL);
de2e1b0c MM	233
	234	if (data->interface_type == MUSB_INTERFACE_UTMI) {
	235	/* OMAP4 uses Internal PHY GS70 which uses UTMI interface */
	236	l &= ~ULPI_12PIN; /* Disable ULPI */
	237	l \|= UTMI_8BIT; /* Enable UTMI */
	238	} else {
	239	l \|= ULPI_12PIN;
	240	}
	241
8573e6a6	242	musb_writel(musb->mregs, OTG_INTERFSEL, l);
550a7375 FB	243
	244	pr_debug("HS USB OTG: revision 0x%x, sysconfig 0x%02x, "
	245	"sysstatus 0x%x, intrfsel 0x%x, simenable 0x%x\n",
8573e6a6 FB	246	musb_readl(musb->mregs, OTG_REVISION),
	247	musb_readl(musb->mregs, OTG_SYSCONFIG),
	248	musb_readl(musb->mregs, OTG_SYSSTATUS),
	249	musb_readl(musb->mregs, OTG_INTERFSEL),
	250	musb_readl(musb->mregs, OTG_SIMENABLE));
550a7375	251
550a7375	252	if (is_host_enabled(musb))
743411b3	253	musb->board_set_vbus = omap2430_musb_set_vbus;
550a7375 FB	254
	255	setup_timer(&musb_idle_timer, musb_do_idle, (unsigned long) musb);
	256
	257	return 0;
	258	}
	259
4f712e01	260	#ifdef CONFIG_PM
8573e6a6 FB	261	void musb_platform_save_context(struct musb *musb,
8573e6a6 FB	262	struct musb_context_registers *musb_context)
4f712e01	263	{
8573e6a6 FB	264	musb_context->otg_sysconfig = musb_readl(musb->mregs, OTG_SYSCONFIG);
8573e6a6 FB	265	musb_context->otg_forcestandby = musb_readl(musb->mregs, OTG_FORCESTDBY);
4f712e01 AKG	266	}
4f712e01 AKG	267
8573e6a6 FB	268	void musb_platform_restore_context(struct musb *musb,
8573e6a6 FB	269	struct musb_context_registers *musb_context)
4f712e01	270	{
8573e6a6 FB	271	musb_writel(musb->mregs, OTG_SYSCONFIG, musb_context->otg_sysconfig);
8573e6a6 FB	272	musb_writel(musb->mregs, OTG_FORCESTDBY, musb_context->otg_forcestandby);
4f712e01 AKG	273	}
	274	#endif
	275
743411b3	276	static int omap2430_musb_suspend(struct musb *musb)
550a7375 FB	277	{
	278	u32 l;
	279
	280	if (!musb->clock)
	281	return 0;
	282
	283	/* in any role */
8573e6a6	284	l = musb_readl(musb->mregs, OTG_FORCESTDBY);
550a7375	285	l \|= ENABLEFORCE; /* enable MSTANDBY */
8573e6a6	286	musb_writel(musb->mregs, OTG_FORCESTDBY, l);
550a7375	287
8573e6a6	288	l = musb_readl(musb->mregs, OTG_SYSCONFIG);
550a7375	289	l \|= ENABLEWAKEUP; /* enable wakeup */
8573e6a6	290	musb_writel(musb->mregs, OTG_SYSCONFIG, l);
550a7375	291
84e250ff	292	otg_set_suspend(musb->xceiv, 1);
550a7375 FB	293
	294	if (musb->set_clock)
	295	musb->set_clock(musb->clock, 0);
	296	else
	297	clk_disable(musb->clock);
	298
	299	return 0;
	300	}
	301
743411b3	302	static int omap2430_musb_resume(struct musb *musb)
550a7375 FB	303	{
	304	u32 l;
	305
	306	if (!musb->clock)
	307	return 0;
	308
84e250ff	309	otg_set_suspend(musb->xceiv, 0);
550a7375 FB	310
	311	if (musb->set_clock)
	312	musb->set_clock(musb->clock, 1);
	313	else
	314	clk_enable(musb->clock);
	315
8573e6a6	316	l = musb_readl(musb->mregs, OTG_SYSCONFIG);
550a7375	317	l &= ~ENABLEWAKEUP; /* disable wakeup */
8573e6a6	318	musb_writel(musb->mregs, OTG_SYSCONFIG, l);
550a7375	319
8573e6a6	320	l = musb_readl(musb->mregs, OTG_FORCESTDBY);
550a7375	321	l &= ~ENABLEFORCE; /* disable MSTANDBY */
8573e6a6	322	musb_writel(musb->mregs, OTG_FORCESTDBY, l);
550a7375 FB	323
	324	return 0;
	325	}
	326
743411b3	327	static int omap2430_musb_exit(struct musb *musb)
550a7375 FB	328	{
550a7375 FB	329
743411b3	330	omap2430_musb_suspend(musb);
550a7375	331
f4053874	332	otg_put_transceiver(musb->xceiv);
550a7375 FB	333	return 0;
550a7375 FB	334	}
743411b3 FB	335
	336	const struct musb_platform_ops musb_ops = {
	337	.init = omap2430_musb_init,
	338	.exit = omap2430_musb_exit,
	339
	340	.suspend = omap2430_musb_suspend,
	341	.resume = omap2430_musb_resume,
	342
	343	.enable = omap2430_musb_enable,
	344	.disable = omap2430_musb_disable,
	345
	346	.set_mode = omap2430_musb_set_mode,
	347	.try_idle = omap2430_musb_try_idle,
	348
	349	.set_vbus = omap2430_musb_set_vbus,
	350	};
dc09886b FB	351
	352	static u64 omap2430_dmamask = DMA_BIT_MASK(32);
	353
	354	static int __init omap2430_probe(struct platform_device *pdev)
	355	{
	356	struct musb_hdrc_platform_data *pdata = pdev->dev.platform_data;
	357	struct platform_device *musb;
a3cee12a	358	struct omap2430_glue *glue;
dc09886b FB	359
	360	int ret = -ENOMEM;
	361
a3cee12a FB	362	glue = kzalloc(sizeof(*glue), GFP_KERNEL);
	363	if (!glue) {
	364	dev_err(&pdev->dev, "failed to allocate glue context\n");
	365	goto err0;
	366	}
	367
dc09886b FB	368	musb = platform_device_alloc("musb-hdrc", -1);
	369	if (!musb) {
	370	dev_err(&pdev->dev, "failed to allocate musb device\n");
a3cee12a	371	goto err1;
dc09886b FB	372	}
	373
	374	musb->dev.parent = &pdev->dev;
	375	musb->dev.dma_mask = &omap2430_dmamask;
	376	musb->dev.coherent_dma_mask = omap2430_dmamask;
	377
a3cee12a FB	378	glue->dev = &pdev->dev;
	379	glue->musb = musb;
	380
	381	platform_set_drvdata(pdev, glue);
dc09886b FB	382
	383	ret = platform_device_add_resources(musb, pdev->resource,
	384	pdev->num_resources);
	385	if (ret) {
	386	dev_err(&pdev->dev, "failed to add resources\n");
a3cee12a	387	goto err2;
dc09886b FB	388	}
	389
	390	ret = platform_device_add_data(musb, pdata, sizeof(*pdata));
	391	if (ret) {
	392	dev_err(&pdev->dev, "failed to add platform_data\n");
a3cee12a	393	goto err2;
dc09886b FB	394	}
	395
	396	ret = platform_device_add(musb);
	397	if (ret) {
	398	dev_err(&pdev->dev, "failed to register musb device\n");
a3cee12a	399	goto err2;
dc09886b FB	400	}
	401
	402	return 0;
	403
a3cee12a	404	err2:
dc09886b FB	405	platform_device_put(musb);
dc09886b FB	406
a3cee12a FB	407	err1:
	408	kfree(glue);
	409
dc09886b FB	410	err0:
	411	return ret;
	412	}
	413
	414	static int __exit omap2430_remove(struct platform_device *pdev)
	415	{
a3cee12a	416	struct omap2430_glue *glue = platform_get_drvdata(pdev);
dc09886b	417
a3cee12a FB	418	platform_device_del(glue->musb);
	419	platform_device_put(glue->musb);
	420	kfree(glue);
dc09886b FB	421
	422	return 0;
	423	}
	424
	425	static struct platform_driver omap2430_driver = {
	426	.remove = __exit_p(omap2430_remove),
	427	.driver = {
	428	.name = "musb-omap2430",
	429	},
	430	};
	431
	432	MODULE_DESCRIPTION("OMAP2PLUS MUSB Glue Layer");
	433	MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>");
	434	MODULE_LICENSE("GPL v2");
	435
	436	static int __init omap2430_init(void)
	437	{
	438	return platform_driver_probe(&omap2430_driver, omap2430_probe);
	439	}
	440	subsys_initcall(omap2430_init);
	441
	442	static void __exit omap2430_exit(void)
	443	{
	444	platform_driver_unregister(&omap2430_driver);
	445	}
	446	module_exit(omap2430_exit);