[deliverable/linux.git] / drivers / extcon / extcon-palmas.c

/*
 * Palmas USB transceiver driver
 *
 * Copyright (C) 2013 Texas Instruments Incorporated - http://www.ti.com
 * 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.
 *
 * Author: Graeme Gregory <gg@slimlogic.co.uk>
 * Author: Kishon Vijay Abraham I <kishon@ti.com>
 *
 * Based on twl6030_usb.c
 *
 * Author: Hema HK <hemahk@ti.com>
 *
 * 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.
 */

#include <linux/module.h>
#include <linux/interrupt.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <linux/err.h>
#include <linux/mfd/palmas.h>
#include <linux/of.h>
#include <linux/of_platform.h>

static const unsigned int palmas_extcon_cable[] = {
	EXTCON_USB,
	EXTCON_USB_HOST,
	EXTCON_NONE,
};

static const int mutually_exclusive[] = {0x3, 0x0};

static void palmas_usb_wakeup(struct palmas *palmas, int enable)
{
	if (enable)
		palmas_write(palmas, PALMAS_USB_OTG_BASE, PALMAS_USB_WAKEUP,
			PALMAS_USB_WAKEUP_ID_WK_UP_COMP);
	else
		palmas_write(palmas, PALMAS_USB_OTG_BASE, PALMAS_USB_WAKEUP, 0);
}

static irqreturn_t palmas_vbus_irq_handler(int irq, void *_palmas_usb)
{
	struct palmas_usb *palmas_usb = _palmas_usb;
	struct extcon_dev *edev = palmas_usb->edev;
	unsigned int vbus_line_state;

	palmas_read(palmas_usb->palmas, PALMAS_INTERRUPT_BASE,
		PALMAS_INT3_LINE_STATE, &vbus_line_state);

	if (vbus_line_state & PALMAS_INT3_LINE_STATE_VBUS) {
		if (palmas_usb->linkstat != PALMAS_USB_STATE_VBUS) {
			palmas_usb->linkstat = PALMAS_USB_STATE_VBUS;
			extcon_set_cable_state_(edev, EXTCON_USB, true);
			dev_info(palmas_usb->dev, "USB cable is attached\n");
		} else {
			dev_dbg(palmas_usb->dev,
				"Spurious connect event detected\n");
		}
	} else if (!(vbus_line_state & PALMAS_INT3_LINE_STATE_VBUS)) {
		if (palmas_usb->linkstat == PALMAS_USB_STATE_VBUS) {
			palmas_usb->linkstat = PALMAS_USB_STATE_DISCONNECT;
			extcon_set_cable_state_(edev, EXTCON_USB, false);
			dev_info(palmas_usb->dev, "USB cable is detached\n");
		} else {
			dev_dbg(palmas_usb->dev,
				"Spurious disconnect event detected\n");
		}
	}

	return IRQ_HANDLED;
}

static irqreturn_t palmas_id_irq_handler(int irq, void *_palmas_usb)
{
	unsigned int set, id_src;
	struct palmas_usb *palmas_usb = _palmas_usb;
	struct extcon_dev *edev = palmas_usb->edev;

	palmas_read(palmas_usb->palmas, PALMAS_USB_OTG_BASE,
		PALMAS_USB_ID_INT_LATCH_SET, &set);
	palmas_read(palmas_usb->palmas, PALMAS_USB_OTG_BASE,
		PALMAS_USB_ID_INT_SRC, &id_src);

	if ((set & PALMAS_USB_ID_INT_SRC_ID_GND) &&
				(id_src & PALMAS_USB_ID_INT_SRC_ID_GND)) {
		palmas_write(palmas_usb->palmas, PALMAS_USB_OTG_BASE,
			PALMAS_USB_ID_INT_LATCH_CLR,
			PALMAS_USB_ID_INT_EN_HI_CLR_ID_GND);
		palmas_usb->linkstat = PALMAS_USB_STATE_ID;
		extcon_set_cable_state_(edev, EXTCON_USB_HOST, true);
		dev_info(palmas_usb->dev, "USB-HOST cable is attached\n");
	} else if ((set & PALMAS_USB_ID_INT_SRC_ID_FLOAT) &&
				(id_src & PALMAS_USB_ID_INT_SRC_ID_FLOAT)) {
		palmas_write(palmas_usb->palmas, PALMAS_USB_OTG_BASE,
			PALMAS_USB_ID_INT_LATCH_CLR,
			PALMAS_USB_ID_INT_EN_HI_CLR_ID_FLOAT);
		palmas_usb->linkstat = PALMAS_USB_STATE_DISCONNECT;
		extcon_set_cable_state_(edev, EXTCON_USB_HOST, false);
		dev_info(palmas_usb->dev, "USB-HOST cable is detached\n");
	} else if ((palmas_usb->linkstat == PALMAS_USB_STATE_ID) &&
				(!(set & PALMAS_USB_ID_INT_SRC_ID_GND))) {
		palmas_usb->linkstat = PALMAS_USB_STATE_DISCONNECT;
		extcon_set_cable_state_(edev, EXTCON_USB_HOST, false);
		dev_info(palmas_usb->dev, "USB-HOST cable is detached\n");
	} else if ((palmas_usb->linkstat == PALMAS_USB_STATE_DISCONNECT) &&
				(id_src & PALMAS_USB_ID_INT_SRC_ID_GND)) {
		palmas_usb->linkstat = PALMAS_USB_STATE_ID;
		extcon_set_cable_state_(edev, EXTCON_USB_HOST, true);
		dev_info(palmas_usb->dev, " USB-HOST cable is attached\n");
	}

	return IRQ_HANDLED;
}

static void palmas_enable_irq(struct palmas_usb *palmas_usb)
{
	palmas_write(palmas_usb->palmas, PALMAS_USB_OTG_BASE,
		PALMAS_USB_VBUS_CTRL_SET,
		PALMAS_USB_VBUS_CTRL_SET_VBUS_ACT_COMP);

	palmas_write(palmas_usb->palmas, PALMAS_USB_OTG_BASE,
		PALMAS_USB_ID_CTRL_SET, PALMAS_USB_ID_CTRL_SET_ID_ACT_COMP);

	palmas_write(palmas_usb->palmas, PALMAS_USB_OTG_BASE,
		PALMAS_USB_ID_INT_EN_HI_SET,
		PALMAS_USB_ID_INT_EN_HI_SET_ID_GND |
		PALMAS_USB_ID_INT_EN_HI_SET_ID_FLOAT);

	if (palmas_usb->enable_vbus_detection)
		palmas_vbus_irq_handler(palmas_usb->vbus_irq, palmas_usb);

	/* cold plug for host mode needs this delay */
	if (palmas_usb->enable_id_detection) {
		msleep(30);
		palmas_id_irq_handler(palmas_usb->id_irq, palmas_usb);
	}
}

static int palmas_usb_probe(struct platform_device *pdev)
{
	struct palmas *palmas = dev_get_drvdata(pdev->dev.parent);
	struct palmas_usb_platform_data	*pdata = dev_get_platdata(&pdev->dev);
	struct device_node *node = pdev->dev.of_node;
	struct palmas_usb *palmas_usb;
	int status;

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

	if (node && !pdata) {
		palmas_usb->wakeup = of_property_read_bool(node, "ti,wakeup");
		palmas_usb->enable_id_detection = of_property_read_bool(node,
						"ti,enable-id-detection");
		palmas_usb->enable_vbus_detection = of_property_read_bool(node,
						"ti,enable-vbus-detection");
	} else {
		palmas_usb->wakeup = true;
		palmas_usb->enable_id_detection = true;
		palmas_usb->enable_vbus_detection = true;

		if (pdata)
			palmas_usb->wakeup = pdata->wakeup;
	}

	palmas->usb = palmas_usb;
	palmas_usb->palmas = palmas;

	palmas_usb->dev	 = &pdev->dev;

	palmas_usb->id_otg_irq = regmap_irq_get_virq(palmas->irq_data,
						PALMAS_ID_OTG_IRQ);
	palmas_usb->id_irq = regmap_irq_get_virq(palmas->irq_data,
						PALMAS_ID_IRQ);
	palmas_usb->vbus_otg_irq = regmap_irq_get_virq(palmas->irq_data,
						PALMAS_VBUS_OTG_IRQ);
	palmas_usb->vbus_irq = regmap_irq_get_virq(palmas->irq_data,
						PALMAS_VBUS_IRQ);

	palmas_usb_wakeup(palmas, palmas_usb->wakeup);

	platform_set_drvdata(pdev, palmas_usb);

	palmas_usb->edev = devm_extcon_dev_allocate(&pdev->dev,
						    palmas_extcon_cable);
	if (IS_ERR(palmas_usb->edev)) {
		dev_err(&pdev->dev, "failed to allocate extcon device\n");
		return -ENOMEM;
	}
	palmas_usb->edev->mutually_exclusive = mutually_exclusive;

	status = devm_extcon_dev_register(&pdev->dev, palmas_usb->edev);
	if (status) {
		dev_err(&pdev->dev, "failed to register extcon device\n");
		return status;
	}

	if (palmas_usb->enable_id_detection) {
		status = devm_request_threaded_irq(palmas_usb->dev,
				palmas_usb->id_irq,
				NULL, palmas_id_irq_handler,
				IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING |
				IRQF_ONESHOT | IRQF_EARLY_RESUME,
				"palmas_usb_id", palmas_usb);
		if (status < 0) {
			dev_err(&pdev->dev, "can't get IRQ %d, err %d\n",
					palmas_usb->id_irq, status);
			return status;
		}
	}

	if (palmas_usb->enable_vbus_detection) {
		status = devm_request_threaded_irq(palmas_usb->dev,
				palmas_usb->vbus_irq, NULL,
				palmas_vbus_irq_handler,
				IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING |
				IRQF_ONESHOT | IRQF_EARLY_RESUME,
				"palmas_usb_vbus", palmas_usb);
		if (status < 0) {
			dev_err(&pdev->dev, "can't get IRQ %d, err %d\n",
					palmas_usb->vbus_irq, status);
			return status;
		}
	}

	palmas_enable_irq(palmas_usb);
	device_set_wakeup_capable(&pdev->dev, true);
	return 0;
}

#ifdef CONFIG_PM_SLEEP
static int palmas_usb_suspend(struct device *dev)
{
	struct palmas_usb *palmas_usb = dev_get_drvdata(dev);

	if (device_may_wakeup(dev)) {
		if (palmas_usb->enable_vbus_detection)
			enable_irq_wake(palmas_usb->vbus_irq);
		if (palmas_usb->enable_id_detection)
			enable_irq_wake(palmas_usb->id_irq);
	}
	return 0;
}

static int palmas_usb_resume(struct device *dev)
{
	struct palmas_usb *palmas_usb = dev_get_drvdata(dev);

	if (device_may_wakeup(dev)) {
		if (palmas_usb->enable_vbus_detection)
			disable_irq_wake(palmas_usb->vbus_irq);
		if (palmas_usb->enable_id_detection)
			disable_irq_wake(palmas_usb->id_irq);
	}
	return 0;
};
#endif

static SIMPLE_DEV_PM_OPS(palmas_pm_ops, palmas_usb_suspend, palmas_usb_resume);

static const struct of_device_id of_palmas_match_tbl[] = {
	{ .compatible = "ti,palmas-usb", },
	{ .compatible = "ti,palmas-usb-vid", },
	{ .compatible = "ti,twl6035-usb", },
	{ .compatible = "ti,twl6035-usb-vid", },
	{ /* end */ }
};

static struct platform_driver palmas_usb_driver = {
	.probe = palmas_usb_probe,
	.driver = {
		.name = "palmas-usb",
		.of_match_table = of_palmas_match_tbl,
		.pm = &palmas_pm_ops,
	},
};

module_platform_driver(palmas_usb_driver);

MODULE_ALIAS("platform:palmas-usb");
MODULE_AUTHOR("Graeme Gregory <gg@slimlogic.co.uk>");
MODULE_DESCRIPTION("Palmas USB transceiver driver");
MODULE_LICENSE("GPL");
MODULE_DEVICE_TABLE(of, of_palmas_match_tbl);
Commit	Line	Data
b1f254e3 GG	1	/*
	2	* Palmas USB transceiver driver
	3	*
	4	* Copyright (C) 2013 Texas Instruments Incorporated - http://www.ti.com
	5	* This program is free software; you can redistribute it and/or modify
	6	* it under the terms of the GNU General Public License as published by
	7	* the Free Software Foundation; either version 2 of the License, or
	8	* (at your option) any later version.
	9	*
	10	* Author: Graeme Gregory <gg@slimlogic.co.uk>
	11	* Author: Kishon Vijay Abraham I <kishon@ti.com>
	12	*
	13	* Based on twl6030_usb.c
	14	*
	15	* Author: Hema HK <hemahk@ti.com>
	16	*
	17	* This program is distributed in the hope that it will be useful,
	18	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	19	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	20	* GNU General Public License for more details.
	21	*/
	22
	23	#include <linux/module.h>
	24	#include <linux/interrupt.h>
	25	#include <linux/platform_device.h>
f63d32d4	26	#include <linux/slab.h>
b1f254e3 GG	27	#include <linux/err.h>
	28	#include <linux/mfd/palmas.h>
	29	#include <linux/of.h>
	30	#include <linux/of_platform.h>
	31
73b6ecdb	32	static const unsigned int palmas_extcon_cable[] = {
2a9de9c0 CC	33	EXTCON_USB,
	34	EXTCON_USB_HOST,
	35	EXTCON_NONE,
b1f254e3 GG	36	};
	37
	38	static const int mutually_exclusive[] = {0x3, 0x0};
	39
	40	static void palmas_usb_wakeup(struct palmas *palmas, int enable)
	41	{
	42	if (enable)
	43	palmas_write(palmas, PALMAS_USB_OTG_BASE, PALMAS_USB_WAKEUP,
	44	PALMAS_USB_WAKEUP_ID_WK_UP_COMP);
	45	else
	46	palmas_write(palmas, PALMAS_USB_OTG_BASE, PALMAS_USB_WAKEUP, 0);
	47	}
	48
	49	static irqreturn_t palmas_vbus_irq_handler(int irq, void *_palmas_usb)
	50	{
	51	struct palmas_usb *palmas_usb = _palmas_usb;
2a9de9c0	52	struct extcon_dev *edev = palmas_usb->edev;
b1f254e3 GG	53	unsigned int vbus_line_state;
	54
	55	palmas_read(palmas_usb->palmas, PALMAS_INTERRUPT_BASE,
	56	PALMAS_INT3_LINE_STATE, &vbus_line_state);
	57
	58	if (vbus_line_state & PALMAS_INT3_LINE_STATE_VBUS) {
	59	if (palmas_usb->linkstat != PALMAS_USB_STATE_VBUS) {
	60	palmas_usb->linkstat = PALMAS_USB_STATE_VBUS;
2a9de9c0	61	extcon_set_cable_state_(edev, EXTCON_USB, true);
002945f0	62	dev_info(palmas_usb->dev, "USB cable is attached\n");
b1f254e3 GG	63	} else {
	64	dev_dbg(palmas_usb->dev,
	65	"Spurious connect event detected\n");
	66	}
	67	} else if (!(vbus_line_state & PALMAS_INT3_LINE_STATE_VBUS)) {
	68	if (palmas_usb->linkstat == PALMAS_USB_STATE_VBUS) {
	69	palmas_usb->linkstat = PALMAS_USB_STATE_DISCONNECT;
2a9de9c0	70	extcon_set_cable_state_(edev, EXTCON_USB, false);
002945f0	71	dev_info(palmas_usb->dev, "USB cable is detached\n");
b1f254e3 GG	72	} else {
	73	dev_dbg(palmas_usb->dev,
	74	"Spurious disconnect event detected\n");
	75	}
	76	}
	77
	78	return IRQ_HANDLED;
	79	}
	80
	81	static irqreturn_t palmas_id_irq_handler(int irq, void *_palmas_usb)
	82	{
b7d2d5be	83	unsigned int set, id_src;
b1f254e3	84	struct palmas_usb *palmas_usb = _palmas_usb;
2a9de9c0	85	struct extcon_dev *edev = palmas_usb->edev;
b1f254e3 GG	86
	87	palmas_read(palmas_usb->palmas, PALMAS_USB_OTG_BASE,
	88	PALMAS_USB_ID_INT_LATCH_SET, &set);
b7d2d5be GC	89	palmas_read(palmas_usb->palmas, PALMAS_USB_OTG_BASE,
b7d2d5be GC	90	PALMAS_USB_ID_INT_SRC, &id_src);
b1f254e3	91
b7d2d5be GC	92	if ((set & PALMAS_USB_ID_INT_SRC_ID_GND) &&
b7d2d5be GC	93	(id_src & PALMAS_USB_ID_INT_SRC_ID_GND)) {
b1f254e3 GG	94	palmas_write(palmas_usb->palmas, PALMAS_USB_OTG_BASE,
	95	PALMAS_USB_ID_INT_LATCH_CLR,
	96	PALMAS_USB_ID_INT_EN_HI_CLR_ID_GND);
	97	palmas_usb->linkstat = PALMAS_USB_STATE_ID;
2a9de9c0	98	extcon_set_cable_state_(edev, EXTCON_USB_HOST, true);
002945f0	99	dev_info(palmas_usb->dev, "USB-HOST cable is attached\n");
b7d2d5be GC	100	} else if ((set & PALMAS_USB_ID_INT_SRC_ID_FLOAT) &&
b7d2d5be GC	101	(id_src & PALMAS_USB_ID_INT_SRC_ID_FLOAT)) {
b1f254e3 GG	102	palmas_write(palmas_usb->palmas, PALMAS_USB_OTG_BASE,
	103	PALMAS_USB_ID_INT_LATCH_CLR,
	104	PALMAS_USB_ID_INT_EN_HI_CLR_ID_FLOAT);
	105	palmas_usb->linkstat = PALMAS_USB_STATE_DISCONNECT;
2a9de9c0	106	extcon_set_cable_state_(edev, EXTCON_USB_HOST, false);
002945f0 LD	107	dev_info(palmas_usb->dev, "USB-HOST cable is detached\n");
	108	} else if ((palmas_usb->linkstat == PALMAS_USB_STATE_ID) &&
	109	(!(set & PALMAS_USB_ID_INT_SRC_ID_GND))) {
	110	palmas_usb->linkstat = PALMAS_USB_STATE_DISCONNECT;
2a9de9c0	111	extcon_set_cable_state_(edev, EXTCON_USB_HOST, false);
002945f0	112	dev_info(palmas_usb->dev, "USB-HOST cable is detached\n");
b7d2d5be GC	113	} else if ((palmas_usb->linkstat == PALMAS_USB_STATE_DISCONNECT) &&
	114	(id_src & PALMAS_USB_ID_INT_SRC_ID_GND)) {
	115	palmas_usb->linkstat = PALMAS_USB_STATE_ID;
2a9de9c0	116	extcon_set_cable_state_(edev, EXTCON_USB_HOST, true);
b7d2d5be	117	dev_info(palmas_usb->dev, " USB-HOST cable is attached\n");
b1f254e3 GG	118	}
	119
	120	return IRQ_HANDLED;
	121	}
	122
	123	static void palmas_enable_irq(struct palmas_usb *palmas_usb)
	124	{
	125	palmas_write(palmas_usb->palmas, PALMAS_USB_OTG_BASE,
	126	PALMAS_USB_VBUS_CTRL_SET,
	127	PALMAS_USB_VBUS_CTRL_SET_VBUS_ACT_COMP);
	128
	129	palmas_write(palmas_usb->palmas, PALMAS_USB_OTG_BASE,
	130	PALMAS_USB_ID_CTRL_SET, PALMAS_USB_ID_CTRL_SET_ID_ACT_COMP);
	131
	132	palmas_write(palmas_usb->palmas, PALMAS_USB_OTG_BASE,
	133	PALMAS_USB_ID_INT_EN_HI_SET,
002945f0 LD	134	PALMAS_USB_ID_INT_EN_HI_SET_ID_GND \|
002945f0 LD	135	PALMAS_USB_ID_INT_EN_HI_SET_ID_FLOAT);
b1f254e3	136
7281e05a LD	137	if (palmas_usb->enable_vbus_detection)
7281e05a LD	138	palmas_vbus_irq_handler(palmas_usb->vbus_irq, palmas_usb);
b1f254e3 GG	139
b1f254e3 GG	140	/* cold plug for host mode needs this delay */
7281e05a LD	141	if (palmas_usb->enable_id_detection) {
	142	msleep(30);
	143	palmas_id_irq_handler(palmas_usb->id_irq, palmas_usb);
	144	}
b1f254e3 GG	145	}
	146
	147	static int palmas_usb_probe(struct platform_device *pdev)
	148	{
	149	struct palmas *palmas = dev_get_drvdata(pdev->dev.parent);
7c0f6558	150	struct palmas_usb_platform_data *pdata = dev_get_platdata(&pdev->dev);
b1f254e3 GG	151	struct device_node *node = pdev->dev.of_node;
	152	struct palmas_usb *palmas_usb;
	153	int status;
	154
b1f254e3 GG	155	palmas_usb = devm_kzalloc(&pdev->dev, sizeof(*palmas_usb), GFP_KERNEL);
	156	if (!palmas_usb)
	157	return -ENOMEM;
	158
7281e05a LD	159	if (node && !pdata) {
	160	palmas_usb->wakeup = of_property_read_bool(node, "ti,wakeup");
	161	palmas_usb->enable_id_detection = of_property_read_bool(node,
	162	"ti,enable-id-detection");
	163	palmas_usb->enable_vbus_detection = of_property_read_bool(node,
	164	"ti,enable-vbus-detection");
	165	} else {
	166	palmas_usb->wakeup = true;
	167	palmas_usb->enable_id_detection = true;
	168	palmas_usb->enable_vbus_detection = true;
	169
	170	if (pdata)
	171	palmas_usb->wakeup = pdata->wakeup;
	172	}
	173
b1f254e3 GG	174	palmas->usb = palmas_usb;
	175	palmas_usb->palmas = palmas;
	176
	177	palmas_usb->dev = &pdev->dev;
	178
	179	palmas_usb->id_otg_irq = regmap_irq_get_virq(palmas->irq_data,
	180	PALMAS_ID_OTG_IRQ);
	181	palmas_usb->id_irq = regmap_irq_get_virq(palmas->irq_data,
	182	PALMAS_ID_IRQ);
	183	palmas_usb->vbus_otg_irq = regmap_irq_get_virq(palmas->irq_data,
	184	PALMAS_VBUS_OTG_IRQ);
	185	palmas_usb->vbus_irq = regmap_irq_get_virq(palmas->irq_data,
	186	PALMAS_VBUS_IRQ);
	187
7281e05a	188	palmas_usb_wakeup(palmas, palmas_usb->wakeup);
b1f254e3 GG	189
	190	platform_set_drvdata(pdev, palmas_usb);
	191
3f79a3fb CC	192	palmas_usb->edev = devm_extcon_dev_allocate(&pdev->dev,
	193	palmas_extcon_cable);
	194	if (IS_ERR(palmas_usb->edev)) {
	195	dev_err(&pdev->dev, "failed to allocate extcon device\n");
	196	return -ENOMEM;
	197	}
3f79a3fb	198	palmas_usb->edev->mutually_exclusive = mutually_exclusive;
b1f254e3	199
3f79a3fb	200	status = devm_extcon_dev_register(&pdev->dev, palmas_usb->edev);
b1f254e3 GG	201	if (status) {
	202	dev_err(&pdev->dev, "failed to register extcon device\n");
	203	return status;
	204	}
	205
7281e05a LD	206	if (palmas_usb->enable_id_detection) {
	207	status = devm_request_threaded_irq(palmas_usb->dev,
	208	palmas_usb->id_irq,
	209	NULL, palmas_id_irq_handler,
	210	IRQF_TRIGGER_FALLING \| IRQF_TRIGGER_RISING \|
	211	IRQF_ONESHOT \| IRQF_EARLY_RESUME,
	212	"palmas_usb_id", palmas_usb);
	213	if (status < 0) {
	214	dev_err(&pdev->dev, "can't get IRQ %d, err %d\n",
b1f254e3	215	palmas_usb->id_irq, status);
b4dad55a	216	return status;
7281e05a	217	}
b1f254e3 GG	218	}
b1f254e3 GG	219
7281e05a LD	220	if (palmas_usb->enable_vbus_detection) {
	221	status = devm_request_threaded_irq(palmas_usb->dev,
	222	palmas_usb->vbus_irq, NULL,
	223	palmas_vbus_irq_handler,
	224	IRQF_TRIGGER_FALLING \| IRQF_TRIGGER_RISING \|
	225	IRQF_ONESHOT \| IRQF_EARLY_RESUME,
	226	"palmas_usb_vbus", palmas_usb);
	227	if (status < 0) {
	228	dev_err(&pdev->dev, "can't get IRQ %d, err %d\n",
b1f254e3	229	palmas_usb->vbus_irq, status);
b4dad55a	230	return status;
7281e05a	231	}
b1f254e3 GG	232	}
	233
	234	palmas_enable_irq(palmas_usb);
024783ef	235	device_set_wakeup_capable(&pdev->dev, true);
b1f254e3	236	return 0;
b1f254e3 GG	237	}
b1f254e3 GG	238
024783ef LD	239	#ifdef CONFIG_PM_SLEEP
	240	static int palmas_usb_suspend(struct device *dev)
	241	{
	242	struct palmas_usb *palmas_usb = dev_get_drvdata(dev);
	243
	244	if (device_may_wakeup(dev)) {
7281e05a LD	245	if (palmas_usb->enable_vbus_detection)
	246	enable_irq_wake(palmas_usb->vbus_irq);
	247	if (palmas_usb->enable_id_detection)
	248	enable_irq_wake(palmas_usb->id_irq);
024783ef LD	249	}
	250	return 0;
	251	}
	252
	253	static int palmas_usb_resume(struct device *dev)
	254	{
	255	struct palmas_usb *palmas_usb = dev_get_drvdata(dev);
	256
	257	if (device_may_wakeup(dev)) {
7281e05a LD	258	if (palmas_usb->enable_vbus_detection)
	259	disable_irq_wake(palmas_usb->vbus_irq);
	260	if (palmas_usb->enable_id_detection)
	261	disable_irq_wake(palmas_usb->id_irq);
024783ef LD	262	}
	263	return 0;
	264	};
	265	#endif
	266
8d4288fb	267	static SIMPLE_DEV_PM_OPS(palmas_pm_ops, palmas_usb_suspend, palmas_usb_resume);
024783ef	268
3bc2ac7d	269	static const struct of_device_id of_palmas_match_tbl[] = {
b1f254e3	270	{ .compatible = "ti,palmas-usb", },
5fbc77d6	271	{ .compatible = "ti,palmas-usb-vid", },
b1f254e3	272	{ .compatible = "ti,twl6035-usb", },
5fbc77d6	273	{ .compatible = "ti,twl6035-usb-vid", },
b1f254e3 GG	274	{ /* end */ }
	275	};
	276
	277	static struct platform_driver palmas_usb_driver = {
	278	.probe = palmas_usb_probe,
b1f254e3 GG	279	.driver = {
	280	.name = "palmas-usb",
	281	.of_match_table = of_palmas_match_tbl,
024783ef	282	.pm = &palmas_pm_ops,
b1f254e3 GG	283	},
	284	};
	285
	286	module_platform_driver(palmas_usb_driver);
	287
	288	MODULE_ALIAS("platform:palmas-usb");
	289	MODULE_AUTHOR("Graeme Gregory <gg@slimlogic.co.uk>");
	290	MODULE_DESCRIPTION("Palmas USB transceiver driver");
	291	MODULE_LICENSE("GPL");
	292	MODULE_DEVICE_TABLE(of, of_palmas_match_tbl);