[deliverable/linux.git] / drivers / usb / chipidea / usbmisc_imx.c

/*
 * Copyright 2012 Freescale Semiconductor, Inc.
 *
 * The code contained herein is licensed under the GNU General Public
 * License. You may obtain a copy of the GNU General Public License
 * Version 2 or later at the following locations:
 *
 * http://www.opensource.org/licenses/gpl-license.html
 * http://www.gnu.org/copyleft/gpl.html
 */

#include <linux/module.h>
#include <linux/of_platform.h>
#include <linux/err.h>
#include <linux/io.h>
#include <linux/delay.h>

#include "ci_hdrc_imx.h"

#define MX25_USB_PHY_CTRL_OFFSET	0x08
#define MX25_BM_EXTERNAL_VBUS_DIVIDER	BIT(23)

#define MX25_EHCI_INTERFACE_SINGLE_UNI	(2 << 0)
#define MX25_EHCI_INTERFACE_DIFF_UNI	(0 << 0)
#define MX25_EHCI_INTERFACE_MASK	(0xf)

#define MX25_OTG_SIC_SHIFT		29
#define MX25_OTG_SIC_MASK		(0x3 << MX25_OTG_SIC_SHIFT)
#define MX25_OTG_PM_BIT			BIT(24)
#define MX25_OTG_PP_BIT			BIT(11)
#define MX25_OTG_OCPOL_BIT		BIT(3)

#define MX25_H1_SIC_SHIFT		21
#define MX25_H1_SIC_MASK		(0x3 << MX25_H1_SIC_SHIFT)
#define MX25_H1_PP_BIT			BIT(18)
#define MX25_H1_PM_BIT			BIT(16)
#define MX25_H1_IPPUE_UP_BIT		BIT(7)
#define MX25_H1_IPPUE_DOWN_BIT		BIT(6)
#define MX25_H1_TLL_BIT			BIT(5)
#define MX25_H1_USBTE_BIT		BIT(4)
#define MX25_H1_OCPOL_BIT		BIT(2)

#define MX27_H1_PM_BIT			BIT(8)
#define MX27_H2_PM_BIT			BIT(16)
#define MX27_OTG_PM_BIT			BIT(24)

#define MX53_USB_OTG_PHY_CTRL_0_OFFSET	0x08
#define MX53_USB_OTG_PHY_CTRL_1_OFFSET	0x0c
#define MX53_USB_UH2_CTRL_OFFSET	0x14
#define MX53_USB_UH3_CTRL_OFFSET	0x18
#define MX53_BM_OVER_CUR_DIS_H1		BIT(5)
#define MX53_BM_OVER_CUR_DIS_OTG	BIT(8)
#define MX53_BM_OVER_CUR_DIS_UHx	BIT(30)
#define MX53_USB_PHYCTRL1_PLLDIV_MASK	0x3
#define MX53_USB_PLL_DIV_24_MHZ		0x01

#define MX6_BM_OVER_CUR_DIS		BIT(7)
#define MX6_BM_WAKEUP_ENABLE		BIT(10)
#define MX6_BM_ID_WAKEUP		BIT(16)
#define MX6_BM_VBUS_WAKEUP		BIT(17)
#define MX6_BM_WAKEUP_INTR		BIT(31)

#define VF610_OVER_CUR_DIS		BIT(7)

struct usbmisc_ops {
	/* It's called once when probe a usb device */
	int (*init)(struct imx_usbmisc_data *data);
	/* It's called once after adding a usb device */
	int (*post)(struct imx_usbmisc_data *data);
	/* It's called when we need to enable/disable usb wakeup */
	int (*set_wakeup)(struct imx_usbmisc_data *data, bool enabled);
};

struct imx_usbmisc {
	void __iomem *base;
	spinlock_t lock;
	const struct usbmisc_ops *ops;
};

static int usbmisc_imx25_init(struct imx_usbmisc_data *data)
{
	struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
	unsigned long flags;
	u32 val = 0;

	if (data->index > 1)
		return -EINVAL;

	spin_lock_irqsave(&usbmisc->lock, flags);
	switch (data->index) {
	case 0:
		val = readl(usbmisc->base);
		val &= ~(MX25_OTG_SIC_MASK | MX25_OTG_PP_BIT);
		val |= (MX25_EHCI_INTERFACE_DIFF_UNI & MX25_EHCI_INTERFACE_MASK) << MX25_OTG_SIC_SHIFT;
		val |= (MX25_OTG_PM_BIT | MX25_OTG_OCPOL_BIT);
		writel(val, usbmisc->base);
		break;
	case 1:
		val = readl(usbmisc->base);
		val &= ~(MX25_H1_SIC_MASK | MX25_H1_PP_BIT |  MX25_H1_IPPUE_UP_BIT);
		val |= (MX25_EHCI_INTERFACE_SINGLE_UNI & MX25_EHCI_INTERFACE_MASK) << MX25_H1_SIC_SHIFT;
		val |= (MX25_H1_PM_BIT | MX25_H1_OCPOL_BIT | MX25_H1_TLL_BIT |
			MX25_H1_USBTE_BIT | MX25_H1_IPPUE_DOWN_BIT);

		writel(val, usbmisc->base);

		break;
	}
	spin_unlock_irqrestore(&usbmisc->lock, flags);

	return 0;
}

static int usbmisc_imx25_post(struct imx_usbmisc_data *data)
{
	struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
	void __iomem *reg;
	unsigned long flags;
	u32 val;

	if (data->index > 2)
		return -EINVAL;

	if (data->evdo) {
		spin_lock_irqsave(&usbmisc->lock, flags);
		reg = usbmisc->base + MX25_USB_PHY_CTRL_OFFSET;
		val = readl(reg);
		writel(val | MX25_BM_EXTERNAL_VBUS_DIVIDER, reg);
		spin_unlock_irqrestore(&usbmisc->lock, flags);
		usleep_range(5000, 10000); /* needed to stabilize voltage */
	}

	return 0;
}

static int usbmisc_imx27_init(struct imx_usbmisc_data *data)
{
	struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
	unsigned long flags;
	u32 val;

	switch (data->index) {
	case 0:
		val = MX27_OTG_PM_BIT;
		break;
	case 1:
		val = MX27_H1_PM_BIT;
		break;
	case 2:
		val = MX27_H2_PM_BIT;
		break;
	default:
		return -EINVAL;
	};

	spin_lock_irqsave(&usbmisc->lock, flags);
	if (data->disable_oc)
		val = readl(usbmisc->base) | val;
	else
		val = readl(usbmisc->base) & ~val;
	writel(val, usbmisc->base);
	spin_unlock_irqrestore(&usbmisc->lock, flags);

	return 0;
}

static int usbmisc_imx53_init(struct imx_usbmisc_data *data)
{
	struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
	void __iomem *reg = NULL;
	unsigned long flags;
	u32 val = 0;

	if (data->index > 3)
		return -EINVAL;

	/* Select a 24 MHz reference clock for the PHY  */
	val = readl(usbmisc->base + MX53_USB_OTG_PHY_CTRL_1_OFFSET);
	val &= ~MX53_USB_PHYCTRL1_PLLDIV_MASK;
	val |= MX53_USB_PLL_DIV_24_MHZ;
	writel(val, usbmisc->base + MX53_USB_OTG_PHY_CTRL_1_OFFSET);

	if (data->disable_oc) {
		spin_lock_irqsave(&usbmisc->lock, flags);
		switch (data->index) {
		case 0:
			reg = usbmisc->base + MX53_USB_OTG_PHY_CTRL_0_OFFSET;
			val = readl(reg) | MX53_BM_OVER_CUR_DIS_OTG;
			break;
		case 1:
			reg = usbmisc->base + MX53_USB_OTG_PHY_CTRL_0_OFFSET;
			val = readl(reg) | MX53_BM_OVER_CUR_DIS_H1;
			break;
		case 2:
			reg = usbmisc->base + MX53_USB_UH2_CTRL_OFFSET;
			val = readl(reg) | MX53_BM_OVER_CUR_DIS_UHx;
			break;
		case 3:
			reg = usbmisc->base + MX53_USB_UH3_CTRL_OFFSET;
			val = readl(reg) | MX53_BM_OVER_CUR_DIS_UHx;
			break;
		}
		if (reg && val)
			writel(val, reg);
		spin_unlock_irqrestore(&usbmisc->lock, flags);
	}

	return 0;
}

static int usbmisc_imx6q_set_wakeup
	(struct imx_usbmisc_data *data, bool enabled)
{
	struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
	unsigned long flags;
	u32 val;
	u32 wakeup_setting = (MX6_BM_WAKEUP_ENABLE |
		MX6_BM_VBUS_WAKEUP | MX6_BM_ID_WAKEUP);
	int ret = 0;

	if (data->index > 3)
		return -EINVAL;

	spin_lock_irqsave(&usbmisc->lock, flags);
	val = readl(usbmisc->base + data->index * 4);
	if (enabled) {
		val |= wakeup_setting;
		writel(val, usbmisc->base + data->index * 4);
	} else {
		if (val & MX6_BM_WAKEUP_INTR)
			pr_debug("wakeup int at ci_hdrc.%d\n", data->index);
		val &= ~wakeup_setting;
		writel(val, usbmisc->base + data->index * 4);
	}
	spin_unlock_irqrestore(&usbmisc->lock, flags);

	return ret;
}

static int usbmisc_imx6q_init(struct imx_usbmisc_data *data)
{
	struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
	unsigned long flags;
	u32 reg;

	if (data->index > 3)
		return -EINVAL;

	if (data->disable_oc) {
		spin_lock_irqsave(&usbmisc->lock, flags);
		reg = readl(usbmisc->base + data->index * 4);
		writel(reg | MX6_BM_OVER_CUR_DIS,
			usbmisc->base + data->index * 4);
		spin_unlock_irqrestore(&usbmisc->lock, flags);
	}

	usbmisc_imx6q_set_wakeup(data, false);

	return 0;
}

static int usbmisc_vf610_init(struct imx_usbmisc_data *data)
{
	struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
	u32 reg;

	/*
	 * Vybrid only has one misc register set, but in two different
	 * areas. These is reflected in two instances of this driver.
	 */
	if (data->index >= 1)
		return -EINVAL;

	if (data->disable_oc) {
		reg = readl(usbmisc->base);
		writel(reg | VF610_OVER_CUR_DIS, usbmisc->base);
	}

	return 0;
}

static const struct usbmisc_ops imx25_usbmisc_ops = {
	.init = usbmisc_imx25_init,
	.post = usbmisc_imx25_post,
};

static const struct usbmisc_ops imx27_usbmisc_ops = {
	.init = usbmisc_imx27_init,
};

static const struct usbmisc_ops imx53_usbmisc_ops = {
	.init = usbmisc_imx53_init,
};

static const struct usbmisc_ops imx6q_usbmisc_ops = {
	.set_wakeup = usbmisc_imx6q_set_wakeup,
	.init = usbmisc_imx6q_init,
};

static const struct usbmisc_ops vf610_usbmisc_ops = {
	.init = usbmisc_vf610_init,
};

int imx_usbmisc_init(struct imx_usbmisc_data *data)
{
	struct imx_usbmisc *usbmisc;

	if (!data)
		return 0;

	usbmisc = dev_get_drvdata(data->dev);
	if (!usbmisc->ops->init)
		return 0;
	return usbmisc->ops->init(data);
}
EXPORT_SYMBOL_GPL(imx_usbmisc_init);

int imx_usbmisc_init_post(struct imx_usbmisc_data *data)
{
	struct imx_usbmisc *usbmisc;

	if (!data)
		return 0;

	usbmisc = dev_get_drvdata(data->dev);
	if (!usbmisc->ops->post)
		return 0;
	return usbmisc->ops->post(data);
}
EXPORT_SYMBOL_GPL(imx_usbmisc_init_post);

int imx_usbmisc_set_wakeup(struct imx_usbmisc_data *data, bool enabled)
{
	struct imx_usbmisc *usbmisc;

	if (!data)
		return 0;

	usbmisc = dev_get_drvdata(data->dev);
	if (!usbmisc->ops->set_wakeup)
		return 0;
	return usbmisc->ops->set_wakeup(data, enabled);
}
EXPORT_SYMBOL_GPL(imx_usbmisc_set_wakeup);

static const struct of_device_id usbmisc_imx_dt_ids[] = {
	{
		.compatible = "fsl,imx25-usbmisc",
		.data = &imx25_usbmisc_ops,
	},
	{
		.compatible = "fsl,imx35-usbmisc",
		.data = &imx25_usbmisc_ops,
	},
	{
		.compatible = "fsl,imx27-usbmisc",
		.data = &imx27_usbmisc_ops,
	},
	{
		.compatible = "fsl,imx51-usbmisc",
		.data = &imx53_usbmisc_ops,
	},
	{
		.compatible = "fsl,imx53-usbmisc",
		.data = &imx53_usbmisc_ops,
	},
	{
		.compatible = "fsl,imx6q-usbmisc",
		.data = &imx6q_usbmisc_ops,
	},
	{
		.compatible = "fsl,vf610-usbmisc",
		.data = &vf610_usbmisc_ops,
	},
	{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, usbmisc_imx_dt_ids);

static int usbmisc_imx_probe(struct platform_device *pdev)
{
	struct resource	*res;
	struct imx_usbmisc *data;
	struct of_device_id *tmp_dev;

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

	spin_lock_init(&data->lock);

	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	data->base = devm_ioremap_resource(&pdev->dev, res);
	if (IS_ERR(data->base))
		return PTR_ERR(data->base);

	tmp_dev = (struct of_device_id *)
		of_match_device(usbmisc_imx_dt_ids, &pdev->dev);
	data->ops = (const struct usbmisc_ops *)tmp_dev->data;
	platform_set_drvdata(pdev, data);

	return 0;
}

static int usbmisc_imx_remove(struct platform_device *pdev)
{
	return 0;
}

static struct platform_driver usbmisc_imx_driver = {
	.probe = usbmisc_imx_probe,
	.remove = usbmisc_imx_remove,
	.driver = {
		.name = "usbmisc_imx",
		.of_match_table = usbmisc_imx_dt_ids,
	 },
};

module_platform_driver(usbmisc_imx_driver);

MODULE_ALIAS("platform:usbmisc-imx");
MODULE_LICENSE("GPL v2");
MODULE_DESCRIPTION("driver for imx usb non-core registers");
MODULE_AUTHOR("Richard Zhao <richard.zhao@freescale.com>");
Commit	Line	Data
d142d6be RZ	1	/*
	2	* Copyright 2012 Freescale Semiconductor, Inc.
	3	*
	4	* The code contained herein is licensed under the GNU General Public
	5	* License. You may obtain a copy of the GNU General Public License
	6	* Version 2 or later at the following locations:
	7	*
	8	* http://www.opensource.org/licenses/gpl-license.html
	9	* http://www.gnu.org/copyleft/gpl.html
	10	*/
	11
	12	#include <linux/module.h>
	13	#include <linux/of_platform.h>
d142d6be RZ	14	#include <linux/err.h>
d142d6be RZ	15	#include <linux/io.h>
a0685330	16	#include <linux/delay.h>
d142d6be	17
8e22978c	18	#include "ci_hdrc_imx.h"
d142d6be	19
a0685330 MG	20	#define MX25_USB_PHY_CTRL_OFFSET 0x08
	21	#define MX25_BM_EXTERNAL_VBUS_DIVIDER BIT(23)
	22
72ee92d1 DC	23	#define MX25_EHCI_INTERFACE_SINGLE_UNI (2 << 0)
	24	#define MX25_EHCI_INTERFACE_DIFF_UNI (0 << 0)
	25	#define MX25_EHCI_INTERFACE_MASK (0xf)
	26
	27	#define MX25_OTG_SIC_SHIFT 29
	28	#define MX25_OTG_SIC_MASK (0x3 << MX25_OTG_SIC_SHIFT)
	29	#define MX25_OTG_PM_BIT BIT(24)
	30	#define MX25_OTG_PP_BIT BIT(11)
	31	#define MX25_OTG_OCPOL_BIT BIT(3)
	32
	33	#define MX25_H1_SIC_SHIFT 21
	34	#define MX25_H1_SIC_MASK (0x3 << MX25_H1_SIC_SHIFT)
	35	#define MX25_H1_PP_BIT BIT(18)
	36	#define MX25_H1_PM_BIT BIT(16)
	37	#define MX25_H1_IPPUE_UP_BIT BIT(7)
	38	#define MX25_H1_IPPUE_DOWN_BIT BIT(6)
	39	#define MX25_H1_TLL_BIT BIT(5)
	40	#define MX25_H1_USBTE_BIT BIT(4)
	41	#define MX25_H1_OCPOL_BIT BIT(2)
	42
9f90e111 AS	43	#define MX27_H1_PM_BIT BIT(8)
	44	#define MX27_H2_PM_BIT BIT(16)
	45	#define MX27_OTG_PM_BIT BIT(24)
	46
f0c910b6	47	#define MX53_USB_OTG_PHY_CTRL_0_OFFSET 0x08
33f92a8a	48	#define MX53_USB_OTG_PHY_CTRL_1_OFFSET 0x0c
f0c910b6 MG	49	#define MX53_USB_UH2_CTRL_OFFSET 0x14
	50	#define MX53_USB_UH3_CTRL_OFFSET 0x18
	51	#define MX53_BM_OVER_CUR_DIS_H1 BIT(5)
	52	#define MX53_BM_OVER_CUR_DIS_OTG BIT(8)
	53	#define MX53_BM_OVER_CUR_DIS_UHx BIT(30)
33f92a8a FE	54	#define MX53_USB_PHYCTRL1_PLLDIV_MASK 0x3
33f92a8a FE	55	#define MX53_USB_PLL_DIV_24_MHZ 0x01
f0c910b6	56
e609108a	57	#define MX6_BM_OVER_CUR_DIS BIT(7)
f636cec5 PC	58	#define MX6_BM_WAKEUP_ENABLE BIT(10)
	59	#define MX6_BM_ID_WAKEUP BIT(16)
	60	#define MX6_BM_VBUS_WAKEUP BIT(17)
	61	#define MX6_BM_WAKEUP_INTR BIT(31)
d142d6be	62
f40017e0 SA	63	#define VF610_OVER_CUR_DIS BIT(7)
f40017e0 SA	64
05986ba9 SH	65	struct usbmisc_ops {
	66	/* It's called once when probe a usb device */
	67	int (init)(struct imx_usbmisc_data data);
	68	/* It's called once after adding a usb device */
	69	int (post)(struct imx_usbmisc_data data);
f636cec5 PC	70	/* It's called when we need to enable/disable usb wakeup */
f636cec5 PC	71	int (set_wakeup)(struct imx_usbmisc_data data, bool enabled);
05986ba9 SH	72	};
05986ba9 SH	73
a7bc2fdf	74	struct imx_usbmisc {
d142d6be RZ	75	void __iomem *base;
d142d6be RZ	76	spinlock_t lock;
e609108a	77	const struct usbmisc_ops *ops;
d142d6be RZ	78	};
d142d6be RZ	79
72ee92d1 DC	80	static int usbmisc_imx25_init(struct imx_usbmisc_data *data)
72ee92d1 DC	81	{
f40017e0	82	struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
72ee92d1 DC	83	unsigned long flags;
	84	u32 val = 0;
	85
	86	if (data->index > 1)
	87	return -EINVAL;
	88
	89	spin_lock_irqsave(&usbmisc->lock, flags);
	90	switch (data->index) {
	91	case 0:
	92	val = readl(usbmisc->base);
	93	val &= ~(MX25_OTG_SIC_MASK \| MX25_OTG_PP_BIT);
	94	val \|= (MX25_EHCI_INTERFACE_DIFF_UNI & MX25_EHCI_INTERFACE_MASK) << MX25_OTG_SIC_SHIFT;
	95	val \|= (MX25_OTG_PM_BIT \| MX25_OTG_OCPOL_BIT);
	96	writel(val, usbmisc->base);
	97	break;
	98	case 1:
	99	val = readl(usbmisc->base);
	100	val &= ~(MX25_H1_SIC_MASK \| MX25_H1_PP_BIT \| MX25_H1_IPPUE_UP_BIT);
	101	val \|= (MX25_EHCI_INTERFACE_SINGLE_UNI & MX25_EHCI_INTERFACE_MASK) << MX25_H1_SIC_SHIFT;
	102	val \|= (MX25_H1_PM_BIT \| MX25_H1_OCPOL_BIT \| MX25_H1_TLL_BIT \|
	103	MX25_H1_USBTE_BIT \| MX25_H1_IPPUE_DOWN_BIT);
	104
	105	writel(val, usbmisc->base);
	106
	107	break;
	108	}
	109	spin_unlock_irqrestore(&usbmisc->lock, flags);
	110
	111	return 0;
	112	}
	113
05986ba9	114	static int usbmisc_imx25_post(struct imx_usbmisc_data *data)
a0685330	115	{
f40017e0	116	struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
a0685330 MG	117	void __iomem *reg;
	118	unsigned long flags;
	119	u32 val;
	120
05986ba9 SH	121	if (data->index > 2)
05986ba9 SH	122	return -EINVAL;
a0685330	123
05986ba9	124	if (data->evdo) {
a0685330	125	spin_lock_irqsave(&usbmisc->lock, flags);
8d1dc4d0	126	reg = usbmisc->base + MX25_USB_PHY_CTRL_OFFSET;
a0685330 MG	127	val = readl(reg);
	128	writel(val \| MX25_BM_EXTERNAL_VBUS_DIVIDER, reg);
	129	spin_unlock_irqrestore(&usbmisc->lock, flags);
	130	usleep_range(5000, 10000); /* needed to stabilize voltage */
	131	}
	132
	133	return 0;
	134	}
	135
9f90e111 AS	136	static int usbmisc_imx27_init(struct imx_usbmisc_data *data)
9f90e111 AS	137	{
f40017e0	138	struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
9f90e111 AS	139	unsigned long flags;
	140	u32 val;
	141
	142	switch (data->index) {
	143	case 0:
	144	val = MX27_OTG_PM_BIT;
	145	break;
	146	case 1:
	147	val = MX27_H1_PM_BIT;
	148	break;
	149	case 2:
	150	val = MX27_H2_PM_BIT;
	151	break;
	152	default:
	153	return -EINVAL;
	154	};
	155
	156	spin_lock_irqsave(&usbmisc->lock, flags);
	157	if (data->disable_oc)
	158	val = readl(usbmisc->base) \| val;
	159	else
	160	val = readl(usbmisc->base) & ~val;
	161	writel(val, usbmisc->base);
	162	spin_unlock_irqrestore(&usbmisc->lock, flags);
	163
	164	return 0;
	165	}
	166
05986ba9	167	static int usbmisc_imx53_init(struct imx_usbmisc_data *data)
f0c910b6	168	{
f40017e0	169	struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
f0c910b6 MG	170	void __iomem *reg = NULL;
	171	unsigned long flags;
	172	u32 val = 0;
	173
05986ba9 SH	174	if (data->index > 3)
05986ba9 SH	175	return -EINVAL;
f0c910b6	176
33f92a8a	177	/* Select a 24 MHz reference clock for the PHY */
4a1d6cf1	178	val = readl(usbmisc->base + MX53_USB_OTG_PHY_CTRL_1_OFFSET);
33f92a8a FE	179	val &= ~MX53_USB_PHYCTRL1_PLLDIV_MASK;
	180	val \|= MX53_USB_PLL_DIV_24_MHZ;
	181	writel(val, usbmisc->base + MX53_USB_OTG_PHY_CTRL_1_OFFSET);
	182
05986ba9	183	if (data->disable_oc) {
f0c910b6	184	spin_lock_irqsave(&usbmisc->lock, flags);
05986ba9	185	switch (data->index) {
f0c910b6 MG	186	case 0:
	187	reg = usbmisc->base + MX53_USB_OTG_PHY_CTRL_0_OFFSET;
	188	val = readl(reg) \| MX53_BM_OVER_CUR_DIS_OTG;
	189	break;
	190	case 1:
	191	reg = usbmisc->base + MX53_USB_OTG_PHY_CTRL_0_OFFSET;
	192	val = readl(reg) \| MX53_BM_OVER_CUR_DIS_H1;
	193	break;
	194	case 2:
	195	reg = usbmisc->base + MX53_USB_UH2_CTRL_OFFSET;
	196	val = readl(reg) \| MX53_BM_OVER_CUR_DIS_UHx;
	197	break;
	198	case 3:
	199	reg = usbmisc->base + MX53_USB_UH3_CTRL_OFFSET;
	200	val = readl(reg) \| MX53_BM_OVER_CUR_DIS_UHx;
	201	break;
	202	}
	203	if (reg && val)
	204	writel(val, reg);
	205	spin_unlock_irqrestore(&usbmisc->lock, flags);
	206	}
	207
	208	return 0;
	209	}
	210
f636cec5 PC	211	static int usbmisc_imx6q_set_wakeup
	212	(struct imx_usbmisc_data *data, bool enabled)
	213	{
	214	struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
	215	unsigned long flags;
	216	u32 val;
	217	u32 wakeup_setting = (MX6_BM_WAKEUP_ENABLE \|
	218	MX6_BM_VBUS_WAKEUP \| MX6_BM_ID_WAKEUP);
	219	int ret = 0;
	220
	221	if (data->index > 3)
	222	return -EINVAL;
	223
	224	spin_lock_irqsave(&usbmisc->lock, flags);
	225	val = readl(usbmisc->base + data->index * 4);
	226	if (enabled) {
	227	val \|= wakeup_setting;
	228	writel(val, usbmisc->base + data->index * 4);
	229	} else {
	230	if (val & MX6_BM_WAKEUP_INTR)
	231	pr_debug("wakeup int at ci_hdrc.%d\n", data->index);
	232	val &= ~wakeup_setting;
	233	writel(val, usbmisc->base + data->index * 4);
	234	}
	235	spin_unlock_irqrestore(&usbmisc->lock, flags);
	236
	237	return ret;
	238	}
	239
05986ba9	240	static int usbmisc_imx6q_init(struct imx_usbmisc_data *data)
d142d6be	241	{
f40017e0	242	struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
d142d6be RZ	243	unsigned long flags;
	244	u32 reg;
	245
05986ba9 SH	246	if (data->index > 3)
05986ba9 SH	247	return -EINVAL;
d142d6be	248
05986ba9	249	if (data->disable_oc) {
d142d6be	250	spin_lock_irqsave(&usbmisc->lock, flags);
05986ba9	251	reg = readl(usbmisc->base + data->index * 4);
e609108a	252	writel(reg \| MX6_BM_OVER_CUR_DIS,
05986ba9	253	usbmisc->base + data->index * 4);
d142d6be RZ	254	spin_unlock_irqrestore(&usbmisc->lock, flags);
	255	}
	256
f636cec5 PC	257	usbmisc_imx6q_set_wakeup(data, false);
f636cec5 PC	258
d142d6be RZ	259	return 0;
	260	}
	261
f40017e0 SA	262	static int usbmisc_vf610_init(struct imx_usbmisc_data *data)
	263	{
	264	struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
	265	u32 reg;
	266
	267	/*
	268	* Vybrid only has one misc register set, but in two different
	269	* areas. These is reflected in two instances of this driver.
	270	*/
	271	if (data->index >= 1)
	272	return -EINVAL;
	273
	274	if (data->disable_oc) {
	275	reg = readl(usbmisc->base);
	276	writel(reg \| VF610_OVER_CUR_DIS, usbmisc->base);
	277	}
	278
	279	return 0;
	280	}
	281
a0685330	282	static const struct usbmisc_ops imx25_usbmisc_ops = {
72ee92d1	283	.init = usbmisc_imx25_init,
a0685330 MG	284	.post = usbmisc_imx25_post,
	285	};
	286
9f90e111 AS	287	static const struct usbmisc_ops imx27_usbmisc_ops = {
	288	.init = usbmisc_imx27_init,
	289	};
	290
f0c910b6 MG	291	static const struct usbmisc_ops imx53_usbmisc_ops = {
	292	.init = usbmisc_imx53_init,
	293	};
	294
d142d6be	295	static const struct usbmisc_ops imx6q_usbmisc_ops = {
f636cec5	296	.set_wakeup = usbmisc_imx6q_set_wakeup,
d142d6be RZ	297	.init = usbmisc_imx6q_init,
	298	};
	299
f40017e0 SA	300	static const struct usbmisc_ops vf610_usbmisc_ops = {
	301	.init = usbmisc_vf610_init,
	302	};
	303
05986ba9 SH	304	int imx_usbmisc_init(struct imx_usbmisc_data *data)
05986ba9 SH	305	{
a4cf1b14 PC	306	struct imx_usbmisc *usbmisc;
	307
	308	if (!data)
	309	return 0;
f40017e0	310
a4cf1b14	311	usbmisc = dev_get_drvdata(data->dev);
05986ba9 SH	312	if (!usbmisc->ops->init)
	313	return 0;
	314	return usbmisc->ops->init(data);
	315	}
	316	EXPORT_SYMBOL_GPL(imx_usbmisc_init);
	317
	318	int imx_usbmisc_init_post(struct imx_usbmisc_data *data)
	319	{
a4cf1b14 PC	320	struct imx_usbmisc *usbmisc;
	321
	322	if (!data)
	323	return 0;
f40017e0	324
a4cf1b14	325	usbmisc = dev_get_drvdata(data->dev);
05986ba9 SH	326	if (!usbmisc->ops->post)
	327	return 0;
	328	return usbmisc->ops->post(data);
	329	}
	330	EXPORT_SYMBOL_GPL(imx_usbmisc_init_post);
	331
f636cec5 PC	332	int imx_usbmisc_set_wakeup(struct imx_usbmisc_data *data, bool enabled)
	333	{
	334	struct imx_usbmisc *usbmisc;
	335
	336	if (!data)
	337	return 0;
	338
	339	usbmisc = dev_get_drvdata(data->dev);
	340	if (!usbmisc->ops->set_wakeup)
	341	return 0;
	342	return usbmisc->ops->set_wakeup(data, enabled);
	343	}
	344	EXPORT_SYMBOL_GPL(imx_usbmisc_set_wakeup);
	345
a7bc2fdf	346	static const struct of_device_id usbmisc_imx_dt_ids[] = {
a0685330 MG	347	{
	348	.compatible = "fsl,imx25-usbmisc",
	349	.data = &imx25_usbmisc_ops,
	350	},
72ee92d1 DC	351	{
	352	.compatible = "fsl,imx35-usbmisc",
	353	.data = &imx25_usbmisc_ops,
	354	},
9f90e111 AS	355	{
	356	.compatible = "fsl,imx27-usbmisc",
	357	.data = &imx27_usbmisc_ops,
	358	},
c4962e03 AS	359	{
	360	.compatible = "fsl,imx51-usbmisc",
	361	.data = &imx53_usbmisc_ops,
	362	},
f0c910b6 MG	363	{
	364	.compatible = "fsl,imx53-usbmisc",
	365	.data = &imx53_usbmisc_ops,
	366	},
e609108a MKB	367	{
	368	.compatible = "fsl,imx6q-usbmisc",
	369	.data = &imx6q_usbmisc_ops,
	370	},
f40017e0 SA	371	{
	372	.compatible = "fsl,vf610-usbmisc",
	373	.data = &vf610_usbmisc_ops,
	374	},
d142d6be RZ	375	{ /* sentinel */ }
d142d6be RZ	376	};
269b83dc	377	MODULE_DEVICE_TABLE(of, usbmisc_imx_dt_ids);
d142d6be	378
a7bc2fdf	379	static int usbmisc_imx_probe(struct platform_device *pdev)
d142d6be RZ	380	{
d142d6be RZ	381	struct resource *res;
a7bc2fdf	382	struct imx_usbmisc *data;
e609108a	383	struct of_device_id *tmp_dev;
d142d6be	384
d142d6be RZ	385	data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
	386	if (!data)
	387	return -ENOMEM;
	388
	389	spin_lock_init(&data->lock);
	390
	391	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
148e1134 TR	392	data->base = devm_ioremap_resource(&pdev->dev, res);
	393	if (IS_ERR(data->base))
	394	return PTR_ERR(data->base);
d142d6be	395
e609108a MKB	396	tmp_dev = (struct of_device_id *)
	397	of_match_device(usbmisc_imx_dt_ids, &pdev->dev);
	398	data->ops = (const struct usbmisc_ops *)tmp_dev->data;
f40017e0	399	platform_set_drvdata(pdev, data);
d142d6be	400
d142d6be RZ	401	return 0;
	402	}
	403
a7bc2fdf	404	static int usbmisc_imx_remove(struct platform_device *pdev)
d142d6be	405	{
d142d6be RZ	406	return 0;
	407	}
	408
a7bc2fdf MG	409	static struct platform_driver usbmisc_imx_driver = {
	410	.probe = usbmisc_imx_probe,
	411	.remove = usbmisc_imx_remove,
d142d6be	412	.driver = {
a7bc2fdf	413	.name = "usbmisc_imx",
a7bc2fdf	414	.of_match_table = usbmisc_imx_dt_ids,
d142d6be RZ	415	},
	416	};
	417
0404ae03	418	module_platform_driver(usbmisc_imx_driver);
d142d6be	419
a7bc2fdf	420	MODULE_ALIAS("platform:usbmisc-imx");
d142d6be	421	MODULE_LICENSE("GPL v2");
a7bc2fdf	422	MODULE_DESCRIPTION("driver for imx usb non-core registers");
d142d6be	423	MODULE_AUTHOR("Richard Zhao <richard.zhao@freescale.com>");