[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 <[email protected]>
 * Author: Kishon Vijay Abraham I <[email protected]>
 *
 * Based on twl6030_usb.c
 *
 * Author: Hema HK <[email protected]>
 *
 * 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 char *palmas_extcon_cable[] = {
	[0] = "USB",
	[1] = "USB-HOST",
	NULL,
};

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;
	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(palmas_usb->edev, "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(palmas_usb->edev, "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;

	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(palmas_usb->edev, "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(palmas_usb->edev, "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(palmas_usb->edev, "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(palmas_usb->edev, "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->name = kstrdup(node->name, GFP_KERNEL);
	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");
		kfree(palmas_usb->edev->name);
		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);
			kfree(palmas_usb->edev->name);
			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);
			kfree(palmas_usb->edev->name);
			return status;
		}
	}

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

static int palmas_usb_remove(struct platform_device *pdev)
{
	struct palmas_usb *palmas_usb = platform_get_drvdata(pdev);

	kfree(palmas_usb->edev->name);

	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,
	.remove = palmas_usb_remove,
	.driver = {
		.name = "palmas-usb",
		.of_match_table = of_palmas_match_tbl,
		.owner = THIS_MODULE,
		.pm = &palmas_pm_ops,
	},
};

module_platform_driver(palmas_usb_driver);

MODULE_ALIAS("platform:palmas-usb");
MODULE_AUTHOR("Graeme Gregory <[email protected]>");
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 <[email protected]>
	11	* Author: Kishon Vijay Abraham I <[email protected]>
	12	*
	13	* Based on twl6030_usb.c
	14	*
	15	* Author: Hema HK <[email protected]>
	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
	32	static const char *palmas_extcon_cable[] = {
	33	[0] = "USB",
	34	[1] = "USB-HOST",
	35	NULL,
	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;
	52	unsigned int vbus_line_state;
	53
	54	palmas_read(palmas_usb->palmas, PALMAS_INTERRUPT_BASE,
	55	PALMAS_INT3_LINE_STATE, &vbus_line_state);
	56
	57	if (vbus_line_state & PALMAS_INT3_LINE_STATE_VBUS) {
	58	if (palmas_usb->linkstat != PALMAS_USB_STATE_VBUS) {
	59	palmas_usb->linkstat = PALMAS_USB_STATE_VBUS;
3f79a3fb	60	extcon_set_cable_state(palmas_usb->edev, "USB", true);
002945f0	61	dev_info(palmas_usb->dev, "USB cable is attached\n");
b1f254e3 GG	62	} else {
	63	dev_dbg(palmas_usb->dev,
	64	"Spurious connect event detected\n");
	65	}
	66	} else if (!(vbus_line_state & PALMAS_INT3_LINE_STATE_VBUS)) {
	67	if (palmas_usb->linkstat == PALMAS_USB_STATE_VBUS) {
	68	palmas_usb->linkstat = PALMAS_USB_STATE_DISCONNECT;
3f79a3fb	69	extcon_set_cable_state(palmas_usb->edev, "USB", false);
002945f0	70	dev_info(palmas_usb->dev, "USB cable is detached\n");
b1f254e3 GG	71	} else {
	72	dev_dbg(palmas_usb->dev,
	73	"Spurious disconnect event detected\n");
	74	}
	75	}
	76
	77	return IRQ_HANDLED;
	78	}
	79
	80	static irqreturn_t palmas_id_irq_handler(int irq, void *_palmas_usb)
	81	{
b7d2d5be	82	unsigned int set, id_src;
b1f254e3 GG	83	struct palmas_usb *palmas_usb = _palmas_usb;
	84
	85	palmas_read(palmas_usb->palmas, PALMAS_USB_OTG_BASE,
	86	PALMAS_USB_ID_INT_LATCH_SET, &set);
b7d2d5be GC	87	palmas_read(palmas_usb->palmas, PALMAS_USB_OTG_BASE,
b7d2d5be GC	88	PALMAS_USB_ID_INT_SRC, &id_src);
b1f254e3	89
b7d2d5be GC	90	if ((set & PALMAS_USB_ID_INT_SRC_ID_GND) &&
b7d2d5be GC	91	(id_src & PALMAS_USB_ID_INT_SRC_ID_GND)) {
b1f254e3 GG	92	palmas_write(palmas_usb->palmas, PALMAS_USB_OTG_BASE,
	93	PALMAS_USB_ID_INT_LATCH_CLR,
	94	PALMAS_USB_ID_INT_EN_HI_CLR_ID_GND);
	95	palmas_usb->linkstat = PALMAS_USB_STATE_ID;
3f79a3fb	96	extcon_set_cable_state(palmas_usb->edev, "USB-HOST", true);
002945f0	97	dev_info(palmas_usb->dev, "USB-HOST cable is attached\n");
b7d2d5be GC	98	} else if ((set & PALMAS_USB_ID_INT_SRC_ID_FLOAT) &&
b7d2d5be GC	99	(id_src & PALMAS_USB_ID_INT_SRC_ID_FLOAT)) {
b1f254e3 GG	100	palmas_write(palmas_usb->palmas, PALMAS_USB_OTG_BASE,
	101	PALMAS_USB_ID_INT_LATCH_CLR,
	102	PALMAS_USB_ID_INT_EN_HI_CLR_ID_FLOAT);
	103	palmas_usb->linkstat = PALMAS_USB_STATE_DISCONNECT;
3f79a3fb	104	extcon_set_cable_state(palmas_usb->edev, "USB-HOST", false);
002945f0 LD	105	dev_info(palmas_usb->dev, "USB-HOST cable is detached\n");
	106	} else if ((palmas_usb->linkstat == PALMAS_USB_STATE_ID) &&
	107	(!(set & PALMAS_USB_ID_INT_SRC_ID_GND))) {
	108	palmas_usb->linkstat = PALMAS_USB_STATE_DISCONNECT;
3f79a3fb	109	extcon_set_cable_state(palmas_usb->edev, "USB-HOST", false);
002945f0	110	dev_info(palmas_usb->dev, "USB-HOST cable is detached\n");
b7d2d5be GC	111	} else if ((palmas_usb->linkstat == PALMAS_USB_STATE_DISCONNECT) &&
	112	(id_src & PALMAS_USB_ID_INT_SRC_ID_GND)) {
	113	palmas_usb->linkstat = PALMAS_USB_STATE_ID;
3f79a3fb	114	extcon_set_cable_state(palmas_usb->edev, "USB-HOST", true);
b7d2d5be	115	dev_info(palmas_usb->dev, " USB-HOST cable is attached\n");
b1f254e3 GG	116	}
	117
	118	return IRQ_HANDLED;
	119	}
	120
	121	static void palmas_enable_irq(struct palmas_usb *palmas_usb)
	122	{
	123	palmas_write(palmas_usb->palmas, PALMAS_USB_OTG_BASE,
	124	PALMAS_USB_VBUS_CTRL_SET,
	125	PALMAS_USB_VBUS_CTRL_SET_VBUS_ACT_COMP);
	126
	127	palmas_write(palmas_usb->palmas, PALMAS_USB_OTG_BASE,
	128	PALMAS_USB_ID_CTRL_SET, PALMAS_USB_ID_CTRL_SET_ID_ACT_COMP);
	129
	130	palmas_write(palmas_usb->palmas, PALMAS_USB_OTG_BASE,
	131	PALMAS_USB_ID_INT_EN_HI_SET,
002945f0 LD	132	PALMAS_USB_ID_INT_EN_HI_SET_ID_GND \|
002945f0 LD	133	PALMAS_USB_ID_INT_EN_HI_SET_ID_FLOAT);
b1f254e3	134
7281e05a LD	135	if (palmas_usb->enable_vbus_detection)
7281e05a LD	136	palmas_vbus_irq_handler(palmas_usb->vbus_irq, palmas_usb);
b1f254e3 GG	137
b1f254e3 GG	138	/* cold plug for host mode needs this delay */
7281e05a LD	139	if (palmas_usb->enable_id_detection) {
	140	msleep(30);
	141	palmas_id_irq_handler(palmas_usb->id_irq, palmas_usb);
	142	}
b1f254e3 GG	143	}
	144
	145	static int palmas_usb_probe(struct platform_device *pdev)
	146	{
	147	struct palmas *palmas = dev_get_drvdata(pdev->dev.parent);
7c0f6558	148	struct palmas_usb_platform_data *pdata = dev_get_platdata(&pdev->dev);
b1f254e3 GG	149	struct device_node *node = pdev->dev.of_node;
	150	struct palmas_usb *palmas_usb;
	151	int status;
	152
b1f254e3 GG	153	palmas_usb = devm_kzalloc(&pdev->dev, sizeof(*palmas_usb), GFP_KERNEL);
	154	if (!palmas_usb)
	155	return -ENOMEM;
	156
7281e05a LD	157	if (node && !pdata) {
	158	palmas_usb->wakeup = of_property_read_bool(node, "ti,wakeup");
	159	palmas_usb->enable_id_detection = of_property_read_bool(node,
	160	"ti,enable-id-detection");
	161	palmas_usb->enable_vbus_detection = of_property_read_bool(node,
	162	"ti,enable-vbus-detection");
	163	} else {
	164	palmas_usb->wakeup = true;
	165	palmas_usb->enable_id_detection = true;
	166	palmas_usb->enable_vbus_detection = true;
	167
	168	if (pdata)
	169	palmas_usb->wakeup = pdata->wakeup;
	170	}
	171
b1f254e3 GG	172	palmas->usb = palmas_usb;
	173	palmas_usb->palmas = palmas;
	174
	175	palmas_usb->dev = &pdev->dev;
	176
	177	palmas_usb->id_otg_irq = regmap_irq_get_virq(palmas->irq_data,
	178	PALMAS_ID_OTG_IRQ);
	179	palmas_usb->id_irq = regmap_irq_get_virq(palmas->irq_data,
	180	PALMAS_ID_IRQ);
	181	palmas_usb->vbus_otg_irq = regmap_irq_get_virq(palmas->irq_data,
	182	PALMAS_VBUS_OTG_IRQ);
	183	palmas_usb->vbus_irq = regmap_irq_get_virq(palmas->irq_data,
	184	PALMAS_VBUS_IRQ);
	185
7281e05a	186	palmas_usb_wakeup(palmas, palmas_usb->wakeup);
b1f254e3 GG	187
	188	platform_set_drvdata(pdev, palmas_usb);
	189
3f79a3fb CC	190	palmas_usb->edev = devm_extcon_dev_allocate(&pdev->dev,
	191	palmas_extcon_cable);
	192	if (IS_ERR(palmas_usb->edev)) {
	193	dev_err(&pdev->dev, "failed to allocate extcon device\n");
	194	return -ENOMEM;
	195	}
	196	palmas_usb->edev->name = kstrdup(node->name, GFP_KERNEL);
3f79a3fb	197	palmas_usb->edev->mutually_exclusive = mutually_exclusive;
b1f254e3	198
3f79a3fb	199	status = devm_extcon_dev_register(&pdev->dev, palmas_usb->edev);
b1f254e3 GG	200	if (status) {
b1f254e3 GG	201	dev_err(&pdev->dev, "failed to register extcon device\n");
3f79a3fb	202	kfree(palmas_usb->edev->name);
b1f254e3 GG	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);
3f79a3fb	216	kfree(palmas_usb->edev->name);
b4dad55a	217	return status;
7281e05a	218	}
b1f254e3 GG	219	}
b1f254e3 GG	220
7281e05a LD	221	if (palmas_usb->enable_vbus_detection) {
	222	status = devm_request_threaded_irq(palmas_usb->dev,
	223	palmas_usb->vbus_irq, NULL,
	224	palmas_vbus_irq_handler,
	225	IRQF_TRIGGER_FALLING \| IRQF_TRIGGER_RISING \|
	226	IRQF_ONESHOT \| IRQF_EARLY_RESUME,
	227	"palmas_usb_vbus", palmas_usb);
	228	if (status < 0) {
	229	dev_err(&pdev->dev, "can't get IRQ %d, err %d\n",
b1f254e3	230	palmas_usb->vbus_irq, status);
3f79a3fb	231	kfree(palmas_usb->edev->name);
b4dad55a	232	return status;
7281e05a	233	}
b1f254e3 GG	234	}
	235
	236	palmas_enable_irq(palmas_usb);
024783ef	237	device_set_wakeup_capable(&pdev->dev, true);
b1f254e3	238	return 0;
b1f254e3 GG	239	}
	240
	241	static int palmas_usb_remove(struct platform_device *pdev)
	242	{
	243	struct palmas_usb *palmas_usb = platform_get_drvdata(pdev);
	244
3f79a3fb	245	kfree(palmas_usb->edev->name);
b1f254e3 GG	246
	247	return 0;
	248	}
	249
024783ef LD	250	#ifdef CONFIG_PM_SLEEP
	251	static int palmas_usb_suspend(struct device *dev)
	252	{
	253	struct palmas_usb *palmas_usb = dev_get_drvdata(dev);
	254
	255	if (device_may_wakeup(dev)) {
7281e05a LD	256	if (palmas_usb->enable_vbus_detection)
	257	enable_irq_wake(palmas_usb->vbus_irq);
	258	if (palmas_usb->enable_id_detection)
	259	enable_irq_wake(palmas_usb->id_irq);
024783ef LD	260	}
	261	return 0;
	262	}
	263
	264	static int palmas_usb_resume(struct device *dev)
	265	{
	266	struct palmas_usb *palmas_usb = dev_get_drvdata(dev);
	267
	268	if (device_may_wakeup(dev)) {
7281e05a LD	269	if (palmas_usb->enable_vbus_detection)
	270	disable_irq_wake(palmas_usb->vbus_irq);
	271	if (palmas_usb->enable_id_detection)
	272	disable_irq_wake(palmas_usb->id_irq);
024783ef LD	273	}
	274	return 0;
	275	};
	276	#endif
	277
8d4288fb	278	static SIMPLE_DEV_PM_OPS(palmas_pm_ops, palmas_usb_suspend, palmas_usb_resume);
024783ef	279
3bc2ac7d	280	static const struct of_device_id of_palmas_match_tbl[] = {
b1f254e3	281	{ .compatible = "ti,palmas-usb", },
5fbc77d6	282	{ .compatible = "ti,palmas-usb-vid", },
b1f254e3	283	{ .compatible = "ti,twl6035-usb", },
5fbc77d6	284	{ .compatible = "ti,twl6035-usb-vid", },
b1f254e3 GG	285	{ /* end */ }
	286	};
	287
	288	static struct platform_driver palmas_usb_driver = {
	289	.probe = palmas_usb_probe,
	290	.remove = palmas_usb_remove,
	291	.driver = {
	292	.name = "palmas-usb",
	293	.of_match_table = of_palmas_match_tbl,
	294	.owner = THIS_MODULE,
024783ef	295	.pm = &palmas_pm_ops,
b1f254e3 GG	296	},
	297	};
	298
	299	module_platform_driver(palmas_usb_driver);
	300
	301	MODULE_ALIAS("platform:palmas-usb");
	302	MODULE_AUTHOR("Graeme Gregory <[email protected]>");
	303	MODULE_DESCRIPTION("Palmas USB transceiver driver");
	304	MODULE_LICENSE("GPL");
	305	MODULE_DEVICE_TABLE(of, of_palmas_match_tbl);