[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 MX6SX_BM_DPDM_WAKEUP_EN		BIT(29)
#define MX6_BM_WAKEUP_INTR		BIT(31)
#define MX6_USB_OTG1_PHY_CTRL		0x18
/* For imx6dql, it is host-only controller, for later imx6, it is otg's */
#define MX6_USB_OTG2_PHY_CTRL		0x1c
#define MX6SX_USB_VBUS_WAKEUP_SOURCE(v)	(v << 8)
#define MX6SX_USB_VBUS_WAKEUP_SOURCE_VBUS	MX6SX_USB_VBUS_WAKEUP_SOURCE(0)
#define MX6SX_USB_VBUS_WAKEUP_SOURCE_AVALID	MX6SX_USB_VBUS_WAKEUP_SOURCE(1)
#define MX6SX_USB_VBUS_WAKEUP_SOURCE_BVALID	MX6SX_USB_VBUS_WAKEUP_SOURCE(2)
#define MX6SX_USB_VBUS_WAKEUP_SOURCE_SESS_END	MX6SX_USB_VBUS_WAKEUP_SOURCE(3)

#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_imx6sx_init(struct imx_usbmisc_data *data)
{
	void __iomem *reg = NULL;
	unsigned long flags;
	struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
	u32 val;

	usbmisc_imx6q_init(data);

	if (data->index == 0 || data->index == 1) {
		reg = usbmisc->base + MX6_USB_OTG1_PHY_CTRL + data->index * 4;
		spin_lock_irqsave(&usbmisc->lock, flags);
		/* Set vbus wakeup source as bvalid */
		val = readl(reg);
		writel(val | MX6SX_USB_VBUS_WAKEUP_SOURCE_BVALID, reg);
		/*
		 * Disable dp/dm wakeup in device mode when vbus is
		 * not there.
		 */
		val = readl(usbmisc->base + data->index * 4);
		writel(val & ~MX6SX_BM_DPDM_WAKEUP_EN,
			usbmisc->base + data->index * 4);
		spin_unlock_irqrestore(&usbmisc->lock, flags);
	}

	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,
};

static const struct usbmisc_ops imx6sx_usbmisc_ops = {
	.set_wakeup = usbmisc_imx6q_set_wakeup,
	.init = usbmisc_imx6sx_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,
	},
	{
		.compatible = "fsl,imx6sx-usbmisc",
		.data = &imx6sx_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)
8721a752	61	#define MX6SX_BM_DPDM_WAKEUP_EN BIT(29)
f636cec5	62	#define MX6_BM_WAKEUP_INTR BIT(31)
8721a752 PC	63	#define MX6_USB_OTG1_PHY_CTRL 0x18
	64	/* For imx6dql, it is host-only controller, for later imx6, it is otg's */
	65	#define MX6_USB_OTG2_PHY_CTRL 0x1c
	66	#define MX6SX_USB_VBUS_WAKEUP_SOURCE(v) (v << 8)
	67	#define MX6SX_USB_VBUS_WAKEUP_SOURCE_VBUS MX6SX_USB_VBUS_WAKEUP_SOURCE(0)
	68	#define MX6SX_USB_VBUS_WAKEUP_SOURCE_AVALID MX6SX_USB_VBUS_WAKEUP_SOURCE(1)
	69	#define MX6SX_USB_VBUS_WAKEUP_SOURCE_BVALID MX6SX_USB_VBUS_WAKEUP_SOURCE(2)
	70	#define MX6SX_USB_VBUS_WAKEUP_SOURCE_SESS_END MX6SX_USB_VBUS_WAKEUP_SOURCE(3)
d142d6be	71
f40017e0 SA	72	#define VF610_OVER_CUR_DIS BIT(7)
f40017e0 SA	73
05986ba9 SH	74	struct usbmisc_ops {
	75	/* It's called once when probe a usb device */
	76	int (init)(struct imx_usbmisc_data data);
	77	/* It's called once after adding a usb device */
	78	int (post)(struct imx_usbmisc_data data);
f636cec5 PC	79	/* It's called when we need to enable/disable usb wakeup */
f636cec5 PC	80	int (set_wakeup)(struct imx_usbmisc_data data, bool enabled);
05986ba9 SH	81	};
05986ba9 SH	82
a7bc2fdf	83	struct imx_usbmisc {
d142d6be RZ	84	void __iomem *base;
d142d6be RZ	85	spinlock_t lock;
e609108a	86	const struct usbmisc_ops *ops;
d142d6be RZ	87	};
d142d6be RZ	88
72ee92d1 DC	89	static int usbmisc_imx25_init(struct imx_usbmisc_data *data)
72ee92d1 DC	90	{
f40017e0	91	struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
72ee92d1 DC	92	unsigned long flags;
	93	u32 val = 0;
	94
	95	if (data->index > 1)
	96	return -EINVAL;
	97
	98	spin_lock_irqsave(&usbmisc->lock, flags);
	99	switch (data->index) {
	100	case 0:
	101	val = readl(usbmisc->base);
	102	val &= ~(MX25_OTG_SIC_MASK \| MX25_OTG_PP_BIT);
	103	val \|= (MX25_EHCI_INTERFACE_DIFF_UNI & MX25_EHCI_INTERFACE_MASK) << MX25_OTG_SIC_SHIFT;
	104	val \|= (MX25_OTG_PM_BIT \| MX25_OTG_OCPOL_BIT);
	105	writel(val, usbmisc->base);
	106	break;
	107	case 1:
	108	val = readl(usbmisc->base);
	109	val &= ~(MX25_H1_SIC_MASK \| MX25_H1_PP_BIT \| MX25_H1_IPPUE_UP_BIT);
	110	val \|= (MX25_EHCI_INTERFACE_SINGLE_UNI & MX25_EHCI_INTERFACE_MASK) << MX25_H1_SIC_SHIFT;
	111	val \|= (MX25_H1_PM_BIT \| MX25_H1_OCPOL_BIT \| MX25_H1_TLL_BIT \|
	112	MX25_H1_USBTE_BIT \| MX25_H1_IPPUE_DOWN_BIT);
	113
	114	writel(val, usbmisc->base);
	115
	116	break;
	117	}
	118	spin_unlock_irqrestore(&usbmisc->lock, flags);
	119
	120	return 0;
	121	}
	122
05986ba9	123	static int usbmisc_imx25_post(struct imx_usbmisc_data *data)
a0685330	124	{
f40017e0	125	struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
a0685330 MG	126	void __iomem *reg;
	127	unsigned long flags;
	128	u32 val;
	129
05986ba9 SH	130	if (data->index > 2)
05986ba9 SH	131	return -EINVAL;
a0685330	132
05986ba9	133	if (data->evdo) {
a0685330	134	spin_lock_irqsave(&usbmisc->lock, flags);
8d1dc4d0	135	reg = usbmisc->base + MX25_USB_PHY_CTRL_OFFSET;
a0685330 MG	136	val = readl(reg);
	137	writel(val \| MX25_BM_EXTERNAL_VBUS_DIVIDER, reg);
	138	spin_unlock_irqrestore(&usbmisc->lock, flags);
	139	usleep_range(5000, 10000); /* needed to stabilize voltage */
	140	}
	141
	142	return 0;
	143	}
	144
9f90e111 AS	145	static int usbmisc_imx27_init(struct imx_usbmisc_data *data)
9f90e111 AS	146	{
f40017e0	147	struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
9f90e111 AS	148	unsigned long flags;
	149	u32 val;
	150
	151	switch (data->index) {
	152	case 0:
	153	val = MX27_OTG_PM_BIT;
	154	break;
	155	case 1:
	156	val = MX27_H1_PM_BIT;
	157	break;
	158	case 2:
	159	val = MX27_H2_PM_BIT;
	160	break;
	161	default:
	162	return -EINVAL;
	163	};
	164
	165	spin_lock_irqsave(&usbmisc->lock, flags);
	166	if (data->disable_oc)
	167	val = readl(usbmisc->base) \| val;
	168	else
	169	val = readl(usbmisc->base) & ~val;
	170	writel(val, usbmisc->base);
	171	spin_unlock_irqrestore(&usbmisc->lock, flags);
	172
	173	return 0;
	174	}
	175
05986ba9	176	static int usbmisc_imx53_init(struct imx_usbmisc_data *data)
f0c910b6	177	{
f40017e0	178	struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
f0c910b6 MG	179	void __iomem *reg = NULL;
	180	unsigned long flags;
	181	u32 val = 0;
	182
05986ba9 SH	183	if (data->index > 3)
05986ba9 SH	184	return -EINVAL;
f0c910b6	185
33f92a8a	186	/* Select a 24 MHz reference clock for the PHY */
4a1d6cf1	187	val = readl(usbmisc->base + MX53_USB_OTG_PHY_CTRL_1_OFFSET);
33f92a8a FE	188	val &= ~MX53_USB_PHYCTRL1_PLLDIV_MASK;
	189	val \|= MX53_USB_PLL_DIV_24_MHZ;
	190	writel(val, usbmisc->base + MX53_USB_OTG_PHY_CTRL_1_OFFSET);
	191
05986ba9	192	if (data->disable_oc) {
f0c910b6	193	spin_lock_irqsave(&usbmisc->lock, flags);
05986ba9	194	switch (data->index) {
f0c910b6 MG	195	case 0:
	196	reg = usbmisc->base + MX53_USB_OTG_PHY_CTRL_0_OFFSET;
	197	val = readl(reg) \| MX53_BM_OVER_CUR_DIS_OTG;
	198	break;
	199	case 1:
	200	reg = usbmisc->base + MX53_USB_OTG_PHY_CTRL_0_OFFSET;
	201	val = readl(reg) \| MX53_BM_OVER_CUR_DIS_H1;
	202	break;
	203	case 2:
	204	reg = usbmisc->base + MX53_USB_UH2_CTRL_OFFSET;
	205	val = readl(reg) \| MX53_BM_OVER_CUR_DIS_UHx;
	206	break;
	207	case 3:
	208	reg = usbmisc->base + MX53_USB_UH3_CTRL_OFFSET;
	209	val = readl(reg) \| MX53_BM_OVER_CUR_DIS_UHx;
	210	break;
	211	}
	212	if (reg && val)
	213	writel(val, reg);
	214	spin_unlock_irqrestore(&usbmisc->lock, flags);
	215	}
	216
	217	return 0;
	218	}
	219
f636cec5 PC	220	static int usbmisc_imx6q_set_wakeup
	221	(struct imx_usbmisc_data *data, bool enabled)
	222	{
	223	struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
	224	unsigned long flags;
	225	u32 val;
	226	u32 wakeup_setting = (MX6_BM_WAKEUP_ENABLE \|
	227	MX6_BM_VBUS_WAKEUP \| MX6_BM_ID_WAKEUP);
	228	int ret = 0;
	229
	230	if (data->index > 3)
	231	return -EINVAL;
	232
	233	spin_lock_irqsave(&usbmisc->lock, flags);
	234	val = readl(usbmisc->base + data->index * 4);
	235	if (enabled) {
	236	val \|= wakeup_setting;
	237	writel(val, usbmisc->base + data->index * 4);
	238	} else {
	239	if (val & MX6_BM_WAKEUP_INTR)
	240	pr_debug("wakeup int at ci_hdrc.%d\n", data->index);
	241	val &= ~wakeup_setting;
	242	writel(val, usbmisc->base + data->index * 4);
	243	}
	244	spin_unlock_irqrestore(&usbmisc->lock, flags);
	245
	246	return ret;
	247	}
	248
05986ba9	249	static int usbmisc_imx6q_init(struct imx_usbmisc_data *data)
d142d6be	250	{
f40017e0	251	struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
d142d6be RZ	252	unsigned long flags;
	253	u32 reg;
	254
05986ba9 SH	255	if (data->index > 3)
05986ba9 SH	256	return -EINVAL;
d142d6be	257
05986ba9	258	if (data->disable_oc) {
d142d6be	259	spin_lock_irqsave(&usbmisc->lock, flags);
05986ba9	260	reg = readl(usbmisc->base + data->index * 4);
e609108a	261	writel(reg \| MX6_BM_OVER_CUR_DIS,
05986ba9	262	usbmisc->base + data->index * 4);
d142d6be RZ	263	spin_unlock_irqrestore(&usbmisc->lock, flags);
	264	}
	265
f636cec5 PC	266	usbmisc_imx6q_set_wakeup(data, false);
f636cec5 PC	267
d142d6be RZ	268	return 0;
	269	}
	270
8721a752 PC	271	static int usbmisc_imx6sx_init(struct imx_usbmisc_data *data)
	272	{
	273	void __iomem *reg = NULL;
	274	unsigned long flags;
	275	struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
	276	u32 val;
8721a752 PC	277
	278	usbmisc_imx6q_init(data);
	279
	280	if (data->index == 0 \|\| data->index == 1) {
	281	reg = usbmisc->base + MX6_USB_OTG1_PHY_CTRL + data->index * 4;
	282	spin_lock_irqsave(&usbmisc->lock, flags);
	283	/* Set vbus wakeup source as bvalid */
	284	val = readl(reg);
	285	writel(val \| MX6SX_USB_VBUS_WAKEUP_SOURCE_BVALID, reg);
	286	/*
	287	* Disable dp/dm wakeup in device mode when vbus is
	288	* not there.
	289	*/
	290	val = readl(usbmisc->base + data->index * 4);
	291	writel(val & ~MX6SX_BM_DPDM_WAKEUP_EN,
	292	usbmisc->base + data->index * 4);
	293	spin_unlock_irqrestore(&usbmisc->lock, flags);
	294	}
	295
1fcefbdf	296	return 0;
8721a752 PC	297	}
8721a752 PC	298
f40017e0 SA	299	static int usbmisc_vf610_init(struct imx_usbmisc_data *data)
	300	{
	301	struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
	302	u32 reg;
	303
	304	/*
	305	* Vybrid only has one misc register set, but in two different
	306	* areas. These is reflected in two instances of this driver.
	307	*/
	308	if (data->index >= 1)
	309	return -EINVAL;
	310
	311	if (data->disable_oc) {
	312	reg = readl(usbmisc->base);
	313	writel(reg \| VF610_OVER_CUR_DIS, usbmisc->base);
	314	}
	315
	316	return 0;
	317	}
	318
a0685330	319	static const struct usbmisc_ops imx25_usbmisc_ops = {
72ee92d1	320	.init = usbmisc_imx25_init,
a0685330 MG	321	.post = usbmisc_imx25_post,
	322	};
	323
9f90e111 AS	324	static const struct usbmisc_ops imx27_usbmisc_ops = {
	325	.init = usbmisc_imx27_init,
	326	};
	327
f0c910b6 MG	328	static const struct usbmisc_ops imx53_usbmisc_ops = {
	329	.init = usbmisc_imx53_init,
	330	};
	331
d142d6be	332	static const struct usbmisc_ops imx6q_usbmisc_ops = {
f636cec5	333	.set_wakeup = usbmisc_imx6q_set_wakeup,
d142d6be RZ	334	.init = usbmisc_imx6q_init,
	335	};
	336
f40017e0 SA	337	static const struct usbmisc_ops vf610_usbmisc_ops = {
	338	.init = usbmisc_vf610_init,
	339	};
	340
8721a752 PC	341	static const struct usbmisc_ops imx6sx_usbmisc_ops = {
	342	.set_wakeup = usbmisc_imx6q_set_wakeup,
	343	.init = usbmisc_imx6sx_init,
	344	};
	345
05986ba9 SH	346	int imx_usbmisc_init(struct imx_usbmisc_data *data)
05986ba9 SH	347	{
a4cf1b14 PC	348	struct imx_usbmisc *usbmisc;
	349
	350	if (!data)
	351	return 0;
f40017e0	352
a4cf1b14	353	usbmisc = dev_get_drvdata(data->dev);
05986ba9 SH	354	if (!usbmisc->ops->init)
	355	return 0;
	356	return usbmisc->ops->init(data);
	357	}
	358	EXPORT_SYMBOL_GPL(imx_usbmisc_init);
	359
	360	int imx_usbmisc_init_post(struct imx_usbmisc_data *data)
	361	{
a4cf1b14 PC	362	struct imx_usbmisc *usbmisc;
	363
	364	if (!data)
	365	return 0;
f40017e0	366
a4cf1b14	367	usbmisc = dev_get_drvdata(data->dev);
05986ba9 SH	368	if (!usbmisc->ops->post)
	369	return 0;
	370	return usbmisc->ops->post(data);
	371	}
	372	EXPORT_SYMBOL_GPL(imx_usbmisc_init_post);
	373
f636cec5 PC	374	int imx_usbmisc_set_wakeup(struct imx_usbmisc_data *data, bool enabled)
	375	{
	376	struct imx_usbmisc *usbmisc;
	377
	378	if (!data)
	379	return 0;
	380
	381	usbmisc = dev_get_drvdata(data->dev);
	382	if (!usbmisc->ops->set_wakeup)
	383	return 0;
	384	return usbmisc->ops->set_wakeup(data, enabled);
	385	}
	386	EXPORT_SYMBOL_GPL(imx_usbmisc_set_wakeup);
	387
a7bc2fdf	388	static const struct of_device_id usbmisc_imx_dt_ids[] = {
a0685330 MG	389	{
	390	.compatible = "fsl,imx25-usbmisc",
	391	.data = &imx25_usbmisc_ops,
	392	},
72ee92d1 DC	393	{
	394	.compatible = "fsl,imx35-usbmisc",
	395	.data = &imx25_usbmisc_ops,
	396	},
9f90e111 AS	397	{
	398	.compatible = "fsl,imx27-usbmisc",
	399	.data = &imx27_usbmisc_ops,
	400	},
c4962e03 AS	401	{
	402	.compatible = "fsl,imx51-usbmisc",
	403	.data = &imx53_usbmisc_ops,
	404	},
f0c910b6 MG	405	{
	406	.compatible = "fsl,imx53-usbmisc",
	407	.data = &imx53_usbmisc_ops,
	408	},
e609108a MKB	409	{
	410	.compatible = "fsl,imx6q-usbmisc",
	411	.data = &imx6q_usbmisc_ops,
	412	},
f40017e0 SA	413	{
	414	.compatible = "fsl,vf610-usbmisc",
	415	.data = &vf610_usbmisc_ops,
	416	},
8721a752 PC	417	{
	418	.compatible = "fsl,imx6sx-usbmisc",
	419	.data = &imx6sx_usbmisc_ops,
	420	},
d142d6be RZ	421	{ /* sentinel */ }
d142d6be RZ	422	};
269b83dc	423	MODULE_DEVICE_TABLE(of, usbmisc_imx_dt_ids);
d142d6be	424
a7bc2fdf	425	static int usbmisc_imx_probe(struct platform_device *pdev)
d142d6be RZ	426	{
d142d6be RZ	427	struct resource *res;
a7bc2fdf	428	struct imx_usbmisc *data;
e609108a	429	struct of_device_id *tmp_dev;
d142d6be	430
d142d6be RZ	431	data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
	432	if (!data)
	433	return -ENOMEM;
	434
	435	spin_lock_init(&data->lock);
	436
	437	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
148e1134 TR	438	data->base = devm_ioremap_resource(&pdev->dev, res);
	439	if (IS_ERR(data->base))
	440	return PTR_ERR(data->base);
d142d6be	441
e609108a MKB	442	tmp_dev = (struct of_device_id *)
	443	of_match_device(usbmisc_imx_dt_ids, &pdev->dev);
	444	data->ops = (const struct usbmisc_ops *)tmp_dev->data;
f40017e0	445	platform_set_drvdata(pdev, data);
d142d6be	446
d142d6be RZ	447	return 0;
	448	}
	449
a7bc2fdf	450	static int usbmisc_imx_remove(struct platform_device *pdev)
d142d6be	451	{
d142d6be RZ	452	return 0;
	453	}
	454
a7bc2fdf MG	455	static struct platform_driver usbmisc_imx_driver = {
	456	.probe = usbmisc_imx_probe,
	457	.remove = usbmisc_imx_remove,
d142d6be	458	.driver = {
a7bc2fdf	459	.name = "usbmisc_imx",
a7bc2fdf	460	.of_match_table = usbmisc_imx_dt_ids,
d142d6be RZ	461	},
	462	};
	463
0404ae03	464	module_platform_driver(usbmisc_imx_driver);
d142d6be	465
a7bc2fdf	466	MODULE_ALIAS("platform:usbmisc-imx");
d142d6be	467	MODULE_LICENSE("GPL v2");
a7bc2fdf	468	MODULE_DESCRIPTION("driver for imx usb non-core registers");
d142d6be	469	MODULE_AUTHOR("Richard Zhao <richard.zhao@freescale.com>");