usb: phy: move all PHY drivers to drivers/usb/phy/

that's a much more reasonable location for
those drivers. It helps us saving drivers/usb/otg/
for when we actually start adding generic OTG
code.

Also completely delete drivers/usb/otg/ as there's
nothing left there.

Signed-off-by: Felipe Balbi <balbi@ti.com>

1 files changed, 0 insertions, 596 deletions

diff --git a/drivers/usb/otg/ab8500-usb.c b/drivers/usb/otg/ab8500-usb.c
deleted file mode 100644
index 2d86f26a0183..000000000000
--- a/drivers/usb/otg/ab8500-usb.c
+++ /dev/null
@@ -1,596 +0,0 @@
-/*
- * drivers/usb/otg/ab8500_usb.c
- *
- * USB transceiver driver for AB8500 chip
- *
- * Copyright (C) 2010 ST-Ericsson AB
- * Mian Yousaf Kaukab <mian.yousaf.kaukab@stericsson.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.
- *
- * 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.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- */
-
-#include <linux/module.h>
-#include <linux/platform_device.h>
-#include <linux/usb/otg.h>
-#include <linux/slab.h>
-#include <linux/notifier.h>
-#include <linux/interrupt.h>
-#include <linux/delay.h>
-#include <linux/mfd/abx500.h>
-#include <linux/mfd/abx500/ab8500.h>
-
-#define AB8500_MAIN_WD_CTRL_REG 0x01
-#define AB8500_USB_LINE_STAT_REG 0x80
-#define AB8500_USB_PHY_CTRL_REG 0x8A
-
-#define AB8500_BIT_OTG_STAT_ID (1 << 0)
-#define AB8500_BIT_PHY_CTRL_HOST_EN (1 << 0)
-#define AB8500_BIT_PHY_CTRL_DEVICE_EN (1 << 1)
-#define AB8500_BIT_WD_CTRL_ENABLE (1 << 0)
-#define AB8500_BIT_WD_CTRL_KICK (1 << 1)
-
-#define AB8500_V1x_LINK_STAT_WAIT (HZ/10)
-#define AB8500_WD_KICK_DELAY_US 100 /* usec */
-#define AB8500_WD_V11_DISABLE_DELAY_US 100 /* usec */
-#define AB8500_WD_V10_DISABLE_DELAY_MS 100 /* ms */
-
-/* Usb line status register */
-enum ab8500_usb_link_status {
-	USB_LINK_NOT_CONFIGURED = 0,
-	USB_LINK_STD_HOST_NC,
-	USB_LINK_STD_HOST_C_NS,
-	USB_LINK_STD_HOST_C_S,
-	USB_LINK_HOST_CHG_NM,
-	USB_LINK_HOST_CHG_HS,
-	USB_LINK_HOST_CHG_HS_CHIRP,
-	USB_LINK_DEDICATED_CHG,
-	USB_LINK_ACA_RID_A,
-	USB_LINK_ACA_RID_B,
-	USB_LINK_ACA_RID_C_NM,
-	USB_LINK_ACA_RID_C_HS,
-	USB_LINK_ACA_RID_C_HS_CHIRP,
-	USB_LINK_HM_IDGND,
-	USB_LINK_RESERVED,
-	USB_LINK_NOT_VALID_LINK
-};
-
-struct ab8500_usb {
-	struct usb_phy phy;
-	struct device *dev;
-	int irq_num_id_rise;
-	int irq_num_id_fall;
-	int irq_num_vbus_rise;
-	int irq_num_vbus_fall;
-	int irq_num_link_status;
-	unsigned vbus_draw;
-	struct delayed_work dwork;
-	struct work_struct phy_dis_work;
-	unsigned long link_status_wait;
-	int rev;
-};
-
-static inline struct ab8500_usb *phy_to_ab(struct usb_phy *x)
-{
-	return container_of(x, struct ab8500_usb, phy);
-}
-
-static void ab8500_usb_wd_workaround(struct ab8500_usb *ab)
-{
-	abx500_set_register_interruptible(ab->dev,
-		AB8500_SYS_CTRL2_BLOCK,
-		AB8500_MAIN_WD_CTRL_REG,
-		AB8500_BIT_WD_CTRL_ENABLE);
-
-	udelay(AB8500_WD_KICK_DELAY_US);
-
-	abx500_set_register_interruptible(ab->dev,
-		AB8500_SYS_CTRL2_BLOCK,
-		AB8500_MAIN_WD_CTRL_REG,
-		(AB8500_BIT_WD_CTRL_ENABLE
-		| AB8500_BIT_WD_CTRL_KICK));
-
-	if (ab->rev > 0x10) /* v1.1 v2.0 */
-		udelay(AB8500_WD_V11_DISABLE_DELAY_US);
-	else /* v1.0 */
-		msleep(AB8500_WD_V10_DISABLE_DELAY_MS);
-
-	abx500_set_register_interruptible(ab->dev,
-		AB8500_SYS_CTRL2_BLOCK,
-		AB8500_MAIN_WD_CTRL_REG,
-		0);
-}
-
-static void ab8500_usb_phy_ctrl(struct ab8500_usb *ab, bool sel_host,
-					bool enable)
-{
-	u8 ctrl_reg;
-	abx500_get_register_interruptible(ab->dev,
-				AB8500_USB,
-				AB8500_USB_PHY_CTRL_REG,
-				&ctrl_reg);
-	if (sel_host) {
-		if (enable)
-			ctrl_reg |= AB8500_BIT_PHY_CTRL_HOST_EN;
-		else
-			ctrl_reg &= ~AB8500_BIT_PHY_CTRL_HOST_EN;
-	} else {
-		if (enable)
-			ctrl_reg |= AB8500_BIT_PHY_CTRL_DEVICE_EN;
-		else
-			ctrl_reg &= ~AB8500_BIT_PHY_CTRL_DEVICE_EN;
-	}
-
-	abx500_set_register_interruptible(ab->dev,
-				AB8500_USB,
-				AB8500_USB_PHY_CTRL_REG,
-				ctrl_reg);
-
-	/* Needed to enable the phy.*/
-	if (enable)
-		ab8500_usb_wd_workaround(ab);
-}
-
-#define ab8500_usb_host_phy_en(ab)	ab8500_usb_phy_ctrl(ab, true, true)
-#define ab8500_usb_host_phy_dis(ab)	ab8500_usb_phy_ctrl(ab, true, false)
-#define ab8500_usb_peri_phy_en(ab)	ab8500_usb_phy_ctrl(ab, false, true)
-#define ab8500_usb_peri_phy_dis(ab)	ab8500_usb_phy_ctrl(ab, false, false)
-
-static int ab8500_usb_link_status_update(struct ab8500_usb *ab)
-{
-	u8 reg;
-	enum ab8500_usb_link_status lsts;
-	void *v = NULL;
-	enum usb_phy_events event;
-
-	abx500_get_register_interruptible(ab->dev,
-			AB8500_USB,
-			AB8500_USB_LINE_STAT_REG,
-			&reg);
-
-	lsts = (reg >> 3) & 0x0F;
-
-	switch (lsts) {
-	case USB_LINK_NOT_CONFIGURED:
-	case USB_LINK_RESERVED:
-	case USB_LINK_NOT_VALID_LINK:
-		/* TODO: Disable regulators. */
-		ab8500_usb_host_phy_dis(ab);
-		ab8500_usb_peri_phy_dis(ab);
-		ab->phy.state = OTG_STATE_B_IDLE;
-		ab->phy.otg->default_a = false;
-		ab->vbus_draw = 0;
-		event = USB_EVENT_NONE;
-		break;
-
-	case USB_LINK_STD_HOST_NC:
-	case USB_LINK_STD_HOST_C_NS:
-	case USB_LINK_STD_HOST_C_S:
-	case USB_LINK_HOST_CHG_NM:
-	case USB_LINK_HOST_CHG_HS:
-	case USB_LINK_HOST_CHG_HS_CHIRP:
-		if (ab->phy.otg->gadget) {
-			/* TODO: Enable regulators. */
-			ab8500_usb_peri_phy_en(ab);
-			v = ab->phy.otg->gadget;
-		}
-		event = USB_EVENT_VBUS;
-		break;
-
-	case USB_LINK_HM_IDGND:
-		if (ab->phy.otg->host) {
-			/* TODO: Enable regulators. */
-			ab8500_usb_host_phy_en(ab);
-			v = ab->phy.otg->host;
-		}
-		ab->phy.state = OTG_STATE_A_IDLE;
-		ab->phy.otg->default_a = true;
-		event = USB_EVENT_ID;
-		break;
-
-	case USB_LINK_ACA_RID_A:
-	case USB_LINK_ACA_RID_B:
-		/* TODO */
-	case USB_LINK_ACA_RID_C_NM:
-	case USB_LINK_ACA_RID_C_HS:
-	case USB_LINK_ACA_RID_C_HS_CHIRP:
-	case USB_LINK_DEDICATED_CHG:
-		/* TODO: vbus_draw */
-		event = USB_EVENT_CHARGER;
-		break;
-	}
-
-	atomic_notifier_call_chain(&ab->phy.notifier, event, v);
-
-	return 0;
-}
-
-static void ab8500_usb_delayed_work(struct work_struct *work)
-{
-	struct ab8500_usb *ab = container_of(work, struct ab8500_usb,
-						dwork.work);
-
-	ab8500_usb_link_status_update(ab);
-}
-
-static irqreturn_t ab8500_usb_v1x_common_irq(int irq, void *data)
-{
-	struct ab8500_usb *ab = (struct ab8500_usb *) data;
-
-	/* Wait for link status to become stable. */
-	schedule_delayed_work(&ab->dwork, ab->link_status_wait);
-
-	return IRQ_HANDLED;
-}
-
-static irqreturn_t ab8500_usb_v1x_vbus_fall_irq(int irq, void *data)
-{
-	struct ab8500_usb *ab = (struct ab8500_usb *) data;
-
-	/* Link status will not be updated till phy is disabled. */
-	ab8500_usb_peri_phy_dis(ab);
-
-	/* Wait for link status to become stable. */
-	schedule_delayed_work(&ab->dwork, ab->link_status_wait);
-
-	return IRQ_HANDLED;
-}
-
-static irqreturn_t ab8500_usb_v20_irq(int irq, void *data)
-{
-	struct ab8500_usb *ab = (struct ab8500_usb *) data;
-
-	ab8500_usb_link_status_update(ab);
-
-	return IRQ_HANDLED;
-}
-
-static void ab8500_usb_phy_disable_work(struct work_struct *work)
-{
-	struct ab8500_usb *ab = container_of(work, struct ab8500_usb,
-						phy_dis_work);
-
-	if (!ab->phy.otg->host)
-		ab8500_usb_host_phy_dis(ab);
-
-	if (!ab->phy.otg->gadget)
-		ab8500_usb_peri_phy_dis(ab);
-}
-
-static int ab8500_usb_set_power(struct usb_phy *phy, unsigned mA)
-{
-	struct ab8500_usb *ab;
-
-	if (!phy)
-		return -ENODEV;
-
-	ab = phy_to_ab(phy);
-
-	ab->vbus_draw = mA;
-
-	if (mA)
-		atomic_notifier_call_chain(&ab->phy.notifier,
-				USB_EVENT_ENUMERATED, ab->phy.otg->gadget);
-	return 0;
-}
-
-/* TODO: Implement some way for charging or other drivers to read
- * ab->vbus_draw.
- */
-
-static int ab8500_usb_set_suspend(struct usb_phy *x, int suspend)
-{
-	/* TODO */
-	return 0;
-}
-
-static int ab8500_usb_set_peripheral(struct usb_otg *otg,
-					struct usb_gadget *gadget)
-{
-	struct ab8500_usb *ab;
-
-	if (!otg)
-		return -ENODEV;
-
-	ab = phy_to_ab(otg->phy);
-
-	/* Some drivers call this function in atomic context.
-	 * Do not update ab8500 registers directly till this
-	 * is fixed.
-	 */
-
-	if (!gadget) {
-		/* TODO: Disable regulators. */
-		otg->gadget = NULL;
-		schedule_work(&ab->phy_dis_work);
-	} else {
-		otg->gadget = gadget;
-		otg->phy->state = OTG_STATE_B_IDLE;
-
-		/* Phy will not be enabled if cable is already
-		 * plugged-in. Schedule to enable phy.
-		 * Use same delay to avoid any race condition.
-		 */
-		schedule_delayed_work(&ab->dwork, ab->link_status_wait);
-	}
-
-	return 0;
-}
-
-static int ab8500_usb_set_host(struct usb_otg *otg, struct usb_bus *host)
-{
-	struct ab8500_usb *ab;
-
-	if (!otg)
-		return -ENODEV;
-
-	ab = phy_to_ab(otg->phy);
-
-	/* Some drivers call this function in atomic context.
-	 * Do not update ab8500 registers directly till this
-	 * is fixed.
-	 */
-
-	if (!host) {
-		/* TODO: Disable regulators. */
-		otg->host = NULL;
-		schedule_work(&ab->phy_dis_work);
-	} else {
-		otg->host = host;
-		/* Phy will not be enabled if cable is already
-		 * plugged-in. Schedule to enable phy.
-		 * Use same delay to avoid any race condition.
-		 */
-		schedule_delayed_work(&ab->dwork, ab->link_status_wait);
-	}
-
-	return 0;
-}
-
-static void ab8500_usb_irq_free(struct ab8500_usb *ab)
-{
-	if (ab->rev < 0x20) {
-		free_irq(ab->irq_num_id_rise, ab);
-		free_irq(ab->irq_num_id_fall, ab);
-		free_irq(ab->irq_num_vbus_rise, ab);
-		free_irq(ab->irq_num_vbus_fall, ab);
-	} else {
-		free_irq(ab->irq_num_link_status, ab);
-	}
-}
-
-static int ab8500_usb_v1x_res_setup(struct platform_device *pdev,
-				struct ab8500_usb *ab)
-{
-	int err;
-
-	ab->irq_num_id_rise = platform_get_irq_byname(pdev, "ID_WAKEUP_R");
-	if (ab->irq_num_id_rise < 0) {
-		dev_err(&pdev->dev, "ID rise irq not found\n");
-		return ab->irq_num_id_rise;
-	}
-	err = request_threaded_irq(ab->irq_num_id_rise, NULL,
-		ab8500_usb_v1x_common_irq,
-		IRQF_NO_SUSPEND | IRQF_SHARED,
-		"usb-id-rise", ab);
-	if (err < 0) {
-		dev_err(ab->dev, "request_irq failed for ID rise irq\n");
-		goto fail0;
-	}
-
-	ab->irq_num_id_fall = platform_get_irq_byname(pdev, "ID_WAKEUP_F");
-	if (ab->irq_num_id_fall < 0) {
-		dev_err(&pdev->dev, "ID fall irq not found\n");
-		return ab->irq_num_id_fall;
-	}
-	err = request_threaded_irq(ab->irq_num_id_fall, NULL,
-		ab8500_usb_v1x_common_irq,
-		IRQF_NO_SUSPEND | IRQF_SHARED,
-		"usb-id-fall", ab);
-	if (err < 0) {
-		dev_err(ab->dev, "request_irq failed for ID fall irq\n");
-		goto fail1;
-	}
-
-	ab->irq_num_vbus_rise = platform_get_irq_byname(pdev, "VBUS_DET_R");
-	if (ab->irq_num_vbus_rise < 0) {
-		dev_err(&pdev->dev, "VBUS rise irq not found\n");
-		return ab->irq_num_vbus_rise;
-	}
-	err = request_threaded_irq(ab->irq_num_vbus_rise, NULL,
-		ab8500_usb_v1x_common_irq,
-		IRQF_NO_SUSPEND | IRQF_SHARED,
-		"usb-vbus-rise", ab);
-	if (err < 0) {
-		dev_err(ab->dev, "request_irq failed for Vbus rise irq\n");
-		goto fail2;
-	}
-
-	ab->irq_num_vbus_fall = platform_get_irq_byname(pdev, "VBUS_DET_F");
-	if (ab->irq_num_vbus_fall < 0) {
-		dev_err(&pdev->dev, "VBUS fall irq not found\n");
-		return ab->irq_num_vbus_fall;
-	}
-	err = request_threaded_irq(ab->irq_num_vbus_fall, NULL,
-		ab8500_usb_v1x_vbus_fall_irq,
-		IRQF_NO_SUSPEND | IRQF_SHARED,
-		"usb-vbus-fall", ab);
-	if (err < 0) {
-		dev_err(ab->dev, "request_irq failed for Vbus fall irq\n");
-		goto fail3;
-	}
-
-	return 0;
-fail3:
-	free_irq(ab->irq_num_vbus_rise, ab);
-fail2:
-	free_irq(ab->irq_num_id_fall, ab);
-fail1:
-	free_irq(ab->irq_num_id_rise, ab);
-fail0:
-	return err;
-}
-
-static int ab8500_usb_v2_res_setup(struct platform_device *pdev,
-				struct ab8500_usb *ab)
-{
-	int err;
-
-	ab->irq_num_link_status = platform_get_irq_byname(pdev,
-						"USB_LINK_STATUS");
-	if (ab->irq_num_link_status < 0) {
-		dev_err(&pdev->dev, "Link status irq not found\n");
-		return ab->irq_num_link_status;
-	}
-
-	err = request_threaded_irq(ab->irq_num_link_status, NULL,
-		ab8500_usb_v20_irq,
-		IRQF_NO_SUSPEND | IRQF_SHARED,
-		"usb-link-status", ab);
-	if (err < 0) {
-		dev_err(ab->dev,
-			"request_irq failed for link status irq\n");
-		return err;
-	}
-
-	return 0;
-}
-
-static int ab8500_usb_probe(struct platform_device *pdev)
-{
-	struct ab8500_usb	*ab;
-	struct usb_otg		*otg;
-	int err;
-	int rev;
-
-	rev = abx500_get_chip_id(&pdev->dev);
-	if (rev < 0) {
-		dev_err(&pdev->dev, "Chip id read failed\n");
-		return rev;
-	} else if (rev < 0x10) {
-		dev_err(&pdev->dev, "Unsupported AB8500 chip\n");
-		return -ENODEV;
-	}
-
-	ab = kzalloc(sizeof *ab, GFP_KERNEL);
-	if (!ab)
-		return -ENOMEM;
-
-	otg = kzalloc(sizeof *otg, GFP_KERNEL);
-	if (!otg) {
-		kfree(ab);
-		return -ENOMEM;
-	}
-
-	ab->dev			= &pdev->dev;
-	ab->rev			= rev;
-	ab->phy.dev		= ab->dev;
-	ab->phy.otg		= otg;
-	ab->phy.label		= "ab8500";
-	ab->phy.set_suspend	= ab8500_usb_set_suspend;
-	ab->phy.set_power	= ab8500_usb_set_power;
-	ab->phy.state		= OTG_STATE_UNDEFINED;
-
-	otg->phy		= &ab->phy;
-	otg->set_host		= ab8500_usb_set_host;
-	otg->set_peripheral	= ab8500_usb_set_peripheral;
-
-	platform_set_drvdata(pdev, ab);
-
-	ATOMIC_INIT_NOTIFIER_HEAD(&ab->phy.notifier);
-
-	/* v1: Wait for link status to become stable.
-	 * all: Updates form set_host and set_peripheral as they are atomic.
-	 */
-	INIT_DELAYED_WORK(&ab->dwork, ab8500_usb_delayed_work);
-
-	/* all: Disable phy when called from set_host and set_peripheral */
-	INIT_WORK(&ab->phy_dis_work, ab8500_usb_phy_disable_work);
-
-	if (ab->rev < 0x20) {
-		err = ab8500_usb_v1x_res_setup(pdev, ab);
-		ab->link_status_wait = AB8500_V1x_LINK_STAT_WAIT;
-	} else {
-		err = ab8500_usb_v2_res_setup(pdev, ab);
-	}
-
-	if (err < 0)
-		goto fail0;
-
-	err = usb_add_phy(&ab->phy, USB_PHY_TYPE_USB2);
-	if (err) {
-		dev_err(&pdev->dev, "Can't register transceiver\n");
-		goto fail1;
-	}
-
-	dev_info(&pdev->dev, "AB8500 usb driver initialized\n");
-
-	return 0;
-fail1:
-	ab8500_usb_irq_free(ab);
-fail0:
-	kfree(otg);
-	kfree(ab);
-	return err;
-}
-
-static int ab8500_usb_remove(struct platform_device *pdev)
-{
-	struct ab8500_usb *ab = platform_get_drvdata(pdev);
-
-	ab8500_usb_irq_free(ab);
-
-	cancel_delayed_work_sync(&ab->dwork);
-
-	cancel_work_sync(&ab->phy_dis_work);
-
-	usb_remove_phy(&ab->phy);
-
-	ab8500_usb_host_phy_dis(ab);
-	ab8500_usb_peri_phy_dis(ab);
-
-	platform_set_drvdata(pdev, NULL);
-
-	kfree(ab->phy.otg);
-	kfree(ab);
-
-	return 0;
-}
-
-static struct platform_driver ab8500_usb_driver = {
-	.probe		= ab8500_usb_probe,
-	.remove		= ab8500_usb_remove,
-	.driver		= {
-		.name	= "ab8500-usb",
-		.owner	= THIS_MODULE,
-	},
-};
-
-static int __init ab8500_usb_init(void)
-{
-	return platform_driver_register(&ab8500_usb_driver);
-}
-subsys_initcall(ab8500_usb_init);
-
-static void __exit ab8500_usb_exit(void)
-{
-	platform_driver_unregister(&ab8500_usb_driver);
-}
-module_exit(ab8500_usb_exit);
-
-MODULE_ALIAS("platform:ab8500_usb");
-MODULE_AUTHOR("ST-Ericsson AB");
-MODULE_DESCRIPTION("AB8500 usb transceiver driver");
-MODULE_LICENSE("GPL");