Revert "USB: Add Intel Langwell USB OTG Transceiver Drive"
authorGreg Kroah-Hartman <gregkh@suse.de>
Tue, 23 Jun 2009 22:58:48 +0000 (15:58 -0700)
committerGreg Kroah-Hartman <gregkh@suse.de>
Sun, 12 Jul 2009 22:16:36 +0000 (15:16 -0700)
This reverts commit 453f77558810ffa669ed5a510a7173ec49def396.

The driver should not have been accepted as the MSRT code is not
in the main kernel yet, which this depends on.

Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Hao Wu <hao.wu@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
drivers/usb/otg/Kconfig
drivers/usb/otg/Makefile
drivers/usb/otg/langwell_otg.c [deleted file]
include/linux/usb/langwell_otg.h [deleted file]

index 69feeec1628ce28bd8744ef5c6048d0b7a12746c..aa884d072f0b4c7202e5b421e52b0ca37a5163de 100644 (file)
@@ -59,18 +59,4 @@ config NOP_USB_XCEIV
         built-in with usb ip or which are autonomous and doesn't require any
         phy programming such as ISP1x04 etc.
 
-config USB_LANGWELL_OTG
-       tristate "Intel Langwell USB OTG dual-role support"
-       depends on USB && MRST
-       select USB_OTG
-       select USB_OTG_UTILS
-       help
-         Say Y here if you want to build Intel Langwell USB OTG
-         transciever driver in kernel. This driver implements role
-         switch between EHCI host driver and Langwell USB OTG
-         client driver.
-
-         To compile this driver as a module, choose M here: the
-         module will be called langwell_otg.
-
 endif # USB || OTG
index 6d1abdd3c0ac9cc1a2cd688dd9fda768ee2562a1..208167856529f26225807cd7edea4fb29a3640e9 100644 (file)
@@ -9,7 +9,6 @@ obj-$(CONFIG_USB_OTG_UTILS)     += otg.o
 obj-$(CONFIG_USB_GPIO_VBUS)    += gpio_vbus.o
 obj-$(CONFIG_ISP1301_OMAP)     += isp1301_omap.o
 obj-$(CONFIG_TWL4030_USB)      += twl4030-usb.o
-obj-$(CONFIG_USB_LANGWELL_OTG) += langwell_otg.o
 obj-$(CONFIG_NOP_USB_XCEIV)    += nop-usb-xceiv.o
 
 ccflags-$(CONFIG_USB_DEBUG)    += -DDEBUG
diff --git a/drivers/usb/otg/langwell_otg.c b/drivers/usb/otg/langwell_otg.c
deleted file mode 100644 (file)
index 6f628d0..0000000
+++ /dev/null
@@ -1,1915 +0,0 @@
-/*
- * Intel Langwell USB OTG transceiver driver
- * Copyright (C) 2008 - 2009, Intel Corporation.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope 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.,
- * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
- *
- */
-/* This driver helps to switch Langwell OTG controller function between host
- * and peripheral. It works with EHCI driver and Langwell client controller
- * driver together.
- */
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/pci.h>
-#include <linux/errno.h>
-#include <linux/interrupt.h>
-#include <linux/kernel.h>
-#include <linux/device.h>
-#include <linux/moduleparam.h>
-#include <linux/usb/ch9.h>
-#include <linux/usb/gadget.h>
-#include <linux/usb.h>
-#include <linux/usb/otg.h>
-#include <linux/notifier.h>
-#include <asm/ipc_defs.h>
-#include <linux/delay.h>
-#include "../core/hcd.h"
-
-#include <linux/usb/langwell_otg.h>
-
-#define        DRIVER_DESC             "Intel Langwell USB OTG transceiver driver"
-#define        DRIVER_VERSION          "3.0.0.32L.0002"
-
-MODULE_DESCRIPTION(DRIVER_DESC);
-MODULE_AUTHOR("Henry Yuan <hang.yuan@intel.com>, Hao Wu <hao.wu@intel.com>");
-MODULE_VERSION(DRIVER_VERSION);
-MODULE_LICENSE("GPL");
-
-static const char driver_name[] = "langwell_otg";
-
-static int langwell_otg_probe(struct pci_dev *pdev,
-                       const struct pci_device_id *id);
-static void langwell_otg_remove(struct pci_dev *pdev);
-static int langwell_otg_suspend(struct pci_dev *pdev, pm_message_t message);
-static int langwell_otg_resume(struct pci_dev *pdev);
-
-static int langwell_otg_set_host(struct otg_transceiver *otg,
-                               struct usb_bus *host);
-static int langwell_otg_set_peripheral(struct otg_transceiver *otg,
-                               struct usb_gadget *gadget);
-static int langwell_otg_start_srp(struct otg_transceiver *otg);
-
-static const struct pci_device_id pci_ids[] = {{
-       .class =        ((PCI_CLASS_SERIAL_USB << 8) | 0xfe),
-       .class_mask =   ~0,
-       .vendor =       0x8086,
-       .device =       0x0811,
-       .subvendor =    PCI_ANY_ID,
-       .subdevice =    PCI_ANY_ID,
-}, { /* end: all zeroes */ }
-};
-
-static struct pci_driver otg_pci_driver = {
-       .name =         (char *) driver_name,
-       .id_table =     pci_ids,
-
-       .probe =        langwell_otg_probe,
-       .remove =       langwell_otg_remove,
-
-       .suspend =      langwell_otg_suspend,
-       .resume =       langwell_otg_resume,
-};
-
-static const char *state_string(enum usb_otg_state state)
-{
-       switch (state) {
-       case OTG_STATE_A_IDLE:
-               return "a_idle";
-       case OTG_STATE_A_WAIT_VRISE:
-               return "a_wait_vrise";
-       case OTG_STATE_A_WAIT_BCON:
-               return "a_wait_bcon";
-       case OTG_STATE_A_HOST:
-               return "a_host";
-       case OTG_STATE_A_SUSPEND:
-               return "a_suspend";
-       case OTG_STATE_A_PERIPHERAL:
-               return "a_peripheral";
-       case OTG_STATE_A_WAIT_VFALL:
-               return "a_wait_vfall";
-       case OTG_STATE_A_VBUS_ERR:
-               return "a_vbus_err";
-       case OTG_STATE_B_IDLE:
-               return "b_idle";
-       case OTG_STATE_B_SRP_INIT:
-               return "b_srp_init";
-       case OTG_STATE_B_PERIPHERAL:
-               return "b_peripheral";
-       case OTG_STATE_B_WAIT_ACON:
-               return "b_wait_acon";
-       case OTG_STATE_B_HOST:
-               return "b_host";
-       default:
-               return "UNDEFINED";
-       }
-}
-
-/* HSM timers */
-static inline struct langwell_otg_timer *otg_timer_initializer
-(void (*function)(unsigned long), unsigned long expires, unsigned long data)
-{
-       struct langwell_otg_timer *timer;
-       timer = kmalloc(sizeof(struct langwell_otg_timer), GFP_KERNEL);
-       timer->function = function;
-       timer->expires = expires;
-       timer->data = data;
-       return timer;
-}
-
-static struct langwell_otg_timer *a_wait_vrise_tmr, *a_wait_bcon_tmr,
-       *a_aidl_bdis_tmr, *b_ase0_brst_tmr, *b_se0_srp_tmr, *b_srp_res_tmr,
-       *b_bus_suspend_tmr;
-
-static struct list_head active_timers;
-
-static struct langwell_otg *the_transceiver;
-
-/* host/client notify transceiver when event affects HNP state */
-void langwell_update_transceiver()
-{
-       otg_dbg("transceiver driver is notified\n");
-       queue_work(the_transceiver->qwork, &the_transceiver->work);
-}
-EXPORT_SYMBOL(langwell_update_transceiver);
-
-static int langwell_otg_set_host(struct otg_transceiver *otg,
-                                       struct usb_bus *host)
-{
-       otg->host = host;
-
-       return 0;
-}
-
-static int langwell_otg_set_peripheral(struct otg_transceiver *otg,
-                                       struct usb_gadget *gadget)
-{
-       otg->gadget = gadget;
-
-       return 0;
-}
-
-static int langwell_otg_set_power(struct otg_transceiver *otg,
-                               unsigned mA)
-{
-       return 0;
-}
-
-/* A-device drives vbus, controlled through PMIC CHRGCNTL register*/
-static void langwell_otg_drv_vbus(int on)
-{
-       struct ipc_pmic_reg_data        pmic_data = {0};
-       struct ipc_pmic_reg_data        battery_data;
-
-       /* Check if battery is attached or not */
-       battery_data.pmic_reg_data[0].register_address = 0xd2;
-       battery_data.ioc = 0;
-       battery_data.num_entries = 1;
-       if (ipc_pmic_register_read(&battery_data)) {
-               otg_dbg("Failed to read PMIC register 0xd2.\n");
-               return;
-       }
-
-       if ((battery_data.pmic_reg_data[0].value & 0x20) == 0) {
-               otg_dbg("no battery attached\n");
-               return;
-       }
-
-       /* Workaround for battery attachment issue */
-       if (battery_data.pmic_reg_data[0].value == 0x34) {
-               otg_dbg("battery \n");
-               return;
-       }
-
-       otg_dbg("battery attached\n");
-
-       pmic_data.ioc = 0;
-       pmic_data.pmic_reg_data[0].register_address = 0xD4;
-       pmic_data.num_entries = 1;
-       if (on)
-               pmic_data.pmic_reg_data[0].value = 0x20;
-       else
-               pmic_data.pmic_reg_data[0].value = 0xc0;
-
-       if (ipc_pmic_register_write(&pmic_data, TRUE))
-               otg_dbg("Failed to write PMIC.\n");
-
-}
-
-/* charge vbus or discharge vbus through a resistor to ground */
-static void langwell_otg_chrg_vbus(int on)
-{
-
-       u32     val;
-
-       val = readl(the_transceiver->regs + CI_OTGSC);
-
-       if (on)
-               writel((val & ~OTGSC_INTSTS_MASK) | OTGSC_VC,
-                               the_transceiver->regs + CI_OTGSC);
-       else
-               writel((val & ~OTGSC_INTSTS_MASK) | OTGSC_VD,
-                               the_transceiver->regs + CI_OTGSC);
-
-}
-
-/* Start SRP */
-static int langwell_otg_start_srp(struct otg_transceiver *otg)
-{
-       u32     val;
-
-       otg_dbg("Start SRP ->\n");
-
-       val = readl(the_transceiver->regs + CI_OTGSC);
-
-       writel((val & ~OTGSC_INTSTS_MASK) | OTGSC_HADP,
-               the_transceiver->regs + CI_OTGSC);
-
-       /* Check if the data plus is finished or not */
-       msleep(8);
-       val = readl(the_transceiver->regs + CI_OTGSC);
-       if (val & (OTGSC_HADP | OTGSC_DP))
-               otg_dbg("DataLine SRP Error\n");
-
-       /* FIXME: VBus SRP */
-
-       return 0;
-}
-
-
-/* stop SOF via bus_suspend */
-static void langwell_otg_loc_sof(int on)
-{
-       struct usb_hcd  *hcd;
-       int             err;
-
-       otg_dbg("loc_sof -> %d\n", on);
-
-       hcd = bus_to_hcd(the_transceiver->otg.host);
-       if (on)
-               err = hcd->driver->bus_resume(hcd);
-       else
-               err = hcd->driver->bus_suspend(hcd);
-
-       if (err)
-               otg_dbg("Failed to resume/suspend bus - %d\n", err);
-}
-
-static void langwell_otg_phy_low_power(int on)
-{
-       u32     val;
-
-       otg_dbg("phy low power mode-> %d\n", on);
-
-       val = readl(the_transceiver->regs + CI_HOSTPC1);
-       if (on)
-               writel(val | HOSTPC1_PHCD, the_transceiver->regs + CI_HOSTPC1);
-       else
-               writel(val & ~HOSTPC1_PHCD, the_transceiver->regs + CI_HOSTPC1);
-}
-
-/* Enable/Disable OTG interrupt */
-static void langwell_otg_intr(int on)
-{
-       u32 val;
-
-       otg_dbg("interrupt -> %d\n", on);
-
-       val = readl(the_transceiver->regs + CI_OTGSC);
-       if (on) {
-               val = val | (OTGSC_INTEN_MASK | OTGSC_IDPU);
-               writel(val, the_transceiver->regs + CI_OTGSC);
-       } else {
-               val = val & ~(OTGSC_INTEN_MASK | OTGSC_IDPU);
-               writel(val, the_transceiver->regs + CI_OTGSC);
-       }
-}
-
-/* set HAAR: Hardware Assist Auto-Reset */
-static void langwell_otg_HAAR(int on)
-{
-       u32     val;
-
-       otg_dbg("HAAR -> %d\n", on);
-
-       val = readl(the_transceiver->regs + CI_OTGSC);
-       if (on)
-               writel((val & ~OTGSC_INTSTS_MASK) | OTGSC_HAAR,
-                               the_transceiver->regs + CI_OTGSC);
-       else
-               writel((val & ~OTGSC_INTSTS_MASK) & ~OTGSC_HAAR,
-                               the_transceiver->regs + CI_OTGSC);
-}
-
-/* set HABA: Hardware Assist B-Disconnect to A-Connect */
-static void langwell_otg_HABA(int on)
-{
-       u32     val;
-
-       otg_dbg("HABA -> %d\n", on);
-
-       val = readl(the_transceiver->regs + CI_OTGSC);
-       if (on)
-               writel((val & ~OTGSC_INTSTS_MASK) | OTGSC_HABA,
-                               the_transceiver->regs + CI_OTGSC);
-       else
-               writel((val & ~OTGSC_INTSTS_MASK) & ~OTGSC_HABA,
-                               the_transceiver->regs + CI_OTGSC);
-}
-
-static int langwell_otg_check_se0_srp(int on)
-{
-       u32 val;
-
-       int delay_time = TB_SE0_SRP * 10; /* step is 100us */
-
-       otg_dbg("check_se0_srp -> \n");
-
-       do {
-               udelay(100);
-               if (!delay_time--)
-                       break;
-               val = readl(the_transceiver->regs + CI_PORTSC1);
-               val &= PORTSC_LS;
-       } while (!val);
-
-       otg_dbg("check_se0_srp <- \n");
-       return val;
-}
-
-/* The timeout callback function to set time out bit */
-static void set_tmout(unsigned long indicator)
-{
-       *(int *)indicator = 1;
-}
-
-void langwell_otg_nsf_msg(unsigned long indicator)
-{
-       switch (indicator) {
-       case 2:
-       case 4:
-       case 6:
-       case 7:
-               printk(KERN_ERR "OTG:NSF-%lu - deivce not responding\n",
-                               indicator);
-               break;
-       case 3:
-               printk(KERN_ERR "OTG:NSF-%lu - deivce not supported\n",
-                               indicator);
-               break;
-       default:
-               printk(KERN_ERR "Do not have this kind of NSF\n");
-               break;
-       }
-}
-
-/* Initialize timers */
-static void langwell_otg_init_timers(struct otg_hsm *hsm)
-{
-       /* HSM used timers */
-       a_wait_vrise_tmr = otg_timer_initializer(&set_tmout, TA_WAIT_VRISE,
-                               (unsigned long)&hsm->a_wait_vrise_tmout);
-       a_wait_bcon_tmr = otg_timer_initializer(&set_tmout, TA_WAIT_BCON,
-                               (unsigned long)&hsm->a_wait_bcon_tmout);
-       a_aidl_bdis_tmr = otg_timer_initializer(&set_tmout, TA_AIDL_BDIS,
-                               (unsigned long)&hsm->a_aidl_bdis_tmout);
-       b_ase0_brst_tmr = otg_timer_initializer(&set_tmout, TB_ASE0_BRST,
-                               (unsigned long)&hsm->b_ase0_brst_tmout);
-       b_se0_srp_tmr = otg_timer_initializer(&set_tmout, TB_SE0_SRP,
-                               (unsigned long)&hsm->b_se0_srp);
-       b_srp_res_tmr = otg_timer_initializer(&set_tmout, TB_SRP_RES,
-                               (unsigned long)&hsm->b_srp_res_tmout);
-       b_bus_suspend_tmr = otg_timer_initializer(&set_tmout, TB_BUS_SUSPEND,
-                               (unsigned long)&hsm->b_bus_suspend_tmout);
-}
-
-/* Free timers */
-static void langwell_otg_free_timers(void)
-{
-       kfree(a_wait_vrise_tmr);
-       kfree(a_wait_bcon_tmr);
-       kfree(a_aidl_bdis_tmr);
-       kfree(b_ase0_brst_tmr);
-       kfree(b_se0_srp_tmr);
-       kfree(b_srp_res_tmr);
-       kfree(b_bus_suspend_tmr);
-}
-
-/* Add timer to timer list */
-static void langwell_otg_add_timer(void *gtimer)
-{
-       struct langwell_otg_timer *timer = (struct langwell_otg_timer *)gtimer;
-       struct langwell_otg_timer *tmp_timer;
-       u32     val32;
-
-       /* Check if the timer is already in the active list,
-        * if so update timer count
-        */
-       list_for_each_entry(tmp_timer, &active_timers, list)
-               if (tmp_timer == timer) {
-                       timer->count = timer->expires;
-                       return;
-               }
-       timer->count = timer->expires;
-
-       if (list_empty(&active_timers)) {
-               val32 = readl(the_transceiver->regs + CI_OTGSC);
-               writel(val32 | OTGSC_1MSE, the_transceiver->regs + CI_OTGSC);
-       }
-
-       list_add_tail(&timer->list, &active_timers);
-}
-
-/* Remove timer from the timer list; clear timeout status */
-static void langwell_otg_del_timer(void *gtimer)
-{
-       struct langwell_otg_timer *timer = (struct langwell_otg_timer *)gtimer;
-       struct langwell_otg_timer *tmp_timer, *del_tmp;
-       u32 val32;
-
-       list_for_each_entry_safe(tmp_timer, del_tmp, &active_timers, list)
-               if (tmp_timer == timer)
-                       list_del(&timer->list);
-
-       if (list_empty(&active_timers)) {
-               val32 = readl(the_transceiver->regs + CI_OTGSC);
-               writel(val32 & ~OTGSC_1MSE, the_transceiver->regs + CI_OTGSC);
-       }
-}
-
-/* Reduce timer count by 1, and find timeout conditions.*/
-static int langwell_otg_tick_timer(u32 *int_sts)
-{
-       struct langwell_otg_timer *tmp_timer, *del_tmp;
-       int expired = 0;
-
-       list_for_each_entry_safe(tmp_timer, del_tmp, &active_timers, list) {
-               tmp_timer->count--;
-               /* check if timer expires */
-               if (!tmp_timer->count) {
-                       list_del(&tmp_timer->list);
-                       tmp_timer->function(tmp_timer->data);
-                       expired = 1;
-               }
-       }
-
-       if (list_empty(&active_timers)) {
-               otg_dbg("tick timer: disable 1ms int\n");
-               *int_sts = *int_sts & ~OTGSC_1MSE;
-       }
-       return expired;
-}
-
-static void reset_otg(void)
-{
-       u32     val;
-       int     delay_time = 1000;
-
-       otg_dbg("reseting OTG controller ...\n");
-       val = readl(the_transceiver->regs + CI_USBCMD);
-       writel(val | USBCMD_RST, the_transceiver->regs + CI_USBCMD);
-       do {
-               udelay(100);
-               if (!delay_time--)
-                       otg_dbg("reset timeout\n");
-               val = readl(the_transceiver->regs + CI_USBCMD);
-               val &= USBCMD_RST;
-       } while (val != 0);
-       otg_dbg("reset done.\n");
-}
-
-static void set_host_mode(void)
-{
-       u32     val;
-
-       reset_otg();
-       val = readl(the_transceiver->regs + CI_USBMODE);
-       val = (val & (~USBMODE_CM)) | USBMODE_HOST;
-       writel(val, the_transceiver->regs + CI_USBMODE);
-}
-
-static void set_client_mode(void)
-{
-       u32     val;
-
-       reset_otg();
-       val = readl(the_transceiver->regs + CI_USBMODE);
-       val = (val & (~USBMODE_CM)) | USBMODE_DEVICE;
-       writel(val, the_transceiver->regs + CI_USBMODE);
-}
-
-static void init_hsm(void)
-{
-       struct langwell_otg     *langwell = the_transceiver;
-       u32                     val32;
-
-       /* read OTGSC after reset */
-       val32 = readl(langwell->regs + CI_OTGSC);
-       otg_dbg("%s: OTGSC init value = 0x%x\n", __func__, val32);
-
-       /* set init state */
-       if (val32 & OTGSC_ID) {
-               langwell->hsm.id = 1;
-               langwell->otg.default_a = 0;
-               set_client_mode();
-               langwell->otg.state = OTG_STATE_B_IDLE;
-               langwell_otg_drv_vbus(0);
-       } else {
-               langwell->hsm.id = 0;
-               langwell->otg.default_a = 1;
-               set_host_mode();
-               langwell->otg.state = OTG_STATE_A_IDLE;
-       }
-
-       /* set session indicator */
-       if (val32 & OTGSC_BSE)
-               langwell->hsm.b_sess_end = 1;
-       if (val32 & OTGSC_BSV)
-               langwell->hsm.b_sess_vld = 1;
-       if (val32 & OTGSC_ASV)
-               langwell->hsm.a_sess_vld = 1;
-       if (val32 & OTGSC_AVV)
-               langwell->hsm.a_vbus_vld = 1;
-
-       /* defautly power the bus */
-       langwell->hsm.a_bus_req = 1;
-       langwell->hsm.a_bus_drop = 0;
-       /* defautly don't request bus as B device */
-       langwell->hsm.b_bus_req = 0;
-       /* no system error */
-       langwell->hsm.a_clr_err = 0;
-}
-
-static irqreturn_t otg_dummy_irq(int irq, void *_dev)
-{
-       void __iomem    *reg_base = _dev;
-       u32     val;
-       u32     int_mask = 0;
-
-       val = readl(reg_base + CI_USBMODE);
-       if ((val & USBMODE_CM) != USBMODE_DEVICE)
-               return IRQ_NONE;
-
-       val = readl(reg_base + CI_USBSTS);
-       int_mask = val & INTR_DUMMY_MASK;
-
-       if (int_mask == 0)
-               return IRQ_NONE;
-
-       /* clear hsm.b_conn here since host driver can't detect it
-       *  otg_dummy_irq called means B-disconnect happened.
-       */
-       if (the_transceiver->hsm.b_conn) {
-               the_transceiver->hsm.b_conn = 0;
-               if (spin_trylock(&the_transceiver->wq_lock)) {
-                       queue_work(the_transceiver->qwork,
-                               &the_transceiver->work);
-                       spin_unlock(&the_transceiver->wq_lock);
-               }
-       }
-       /* Clear interrupts */
-       writel(int_mask, reg_base + CI_USBSTS);
-       return IRQ_HANDLED;
-}
-
-static irqreturn_t otg_irq(int irq, void *_dev)
-{
-       struct  langwell_otg *langwell = _dev;
-       u32     int_sts, int_en;
-       u32     int_mask = 0;
-       int     flag = 0;
-
-       int_sts = readl(langwell->regs + CI_OTGSC);
-       int_en = (int_sts & OTGSC_INTEN_MASK) >> 8;
-       int_mask = int_sts & int_en;
-       if (int_mask == 0)
-               return IRQ_NONE;
-
-       if (int_mask & OTGSC_IDIS) {
-               otg_dbg("%s: id change int\n", __func__);
-               langwell->hsm.id = (int_sts & OTGSC_ID) ? 1 : 0;
-               flag = 1;
-       }
-       if (int_mask & OTGSC_DPIS) {
-               otg_dbg("%s: data pulse int\n", __func__);
-               langwell->hsm.a_srp_det = (int_sts & OTGSC_DPS) ? 1 : 0;
-               flag = 1;
-       }
-       if (int_mask & OTGSC_BSEIS) {
-               otg_dbg("%s: b session end int\n", __func__);
-               langwell->hsm.b_sess_end = (int_sts & OTGSC_BSE) ? 1 : 0;
-               flag = 1;
-       }
-       if (int_mask & OTGSC_BSVIS) {
-               otg_dbg("%s: b session valid int\n", __func__);
-               langwell->hsm.b_sess_vld = (int_sts & OTGSC_BSV) ? 1 : 0;
-               flag = 1;
-       }
-       if (int_mask & OTGSC_ASVIS) {
-               otg_dbg("%s: a session valid int\n", __func__);
-               langwell->hsm.a_sess_vld = (int_sts & OTGSC_ASV) ? 1 : 0;
-               flag = 1;
-       }
-       if (int_mask & OTGSC_AVVIS) {
-               otg_dbg("%s: a vbus valid int\n", __func__);
-               langwell->hsm.a_vbus_vld = (int_sts & OTGSC_AVV) ? 1 : 0;
-               flag = 1;
-       }
-
-       if (int_mask & OTGSC_1MSS) {
-               /* need to schedule otg_work if any timer is expired */
-               if (langwell_otg_tick_timer(&int_sts))
-                       flag = 1;
-       }
-
-       writel((int_sts & ~OTGSC_INTSTS_MASK) | int_mask,
-                       langwell->regs + CI_OTGSC);
-       if (flag)
-               queue_work(langwell->qwork, &langwell->work);
-
-       return IRQ_HANDLED;
-}
-
-static void langwell_otg_work(struct work_struct *work)
-{
-       struct langwell_otg *langwell = container_of(work,
-                                       struct langwell_otg, work);
-       int     retval;
-
-       otg_dbg("%s: old state = %s\n", __func__,
-                       state_string(langwell->otg.state));
-
-       switch (langwell->otg.state) {
-       case OTG_STATE_UNDEFINED:
-       case OTG_STATE_B_IDLE:
-               if (!langwell->hsm.id) {
-                       langwell_otg_del_timer(b_srp_res_tmr);
-                       langwell->otg.default_a = 1;
-                       langwell->hsm.a_srp_det = 0;
-
-                       langwell_otg_chrg_vbus(0);
-                       langwell_otg_drv_vbus(0);
-
-                       set_host_mode();
-                       langwell->otg.state = OTG_STATE_A_IDLE;
-                       queue_work(langwell->qwork, &langwell->work);
-               } else if (langwell->hsm.b_srp_res_tmout) {
-                       langwell->hsm.b_srp_res_tmout = 0;
-                       langwell->hsm.b_bus_req = 0;
-                       langwell_otg_nsf_msg(6);
-               } else if (langwell->hsm.b_sess_vld) {
-                       langwell_otg_del_timer(b_srp_res_tmr);
-                       langwell->hsm.b_sess_end = 0;
-                       langwell->hsm.a_bus_suspend = 0;
-
-                       langwell_otg_chrg_vbus(0);
-                       if (langwell->client_ops) {
-                               langwell->client_ops->resume(langwell->pdev);
-                               langwell->otg.state = OTG_STATE_B_PERIPHERAL;
-                       } else
-                               otg_dbg("client driver not loaded.\n");
-
-               } else if (langwell->hsm.b_bus_req &&
-                               (langwell->hsm.b_sess_end)) {
-                       /* workaround for b_se0_srp detection */
-                       retval = langwell_otg_check_se0_srp(0);
-                       if (retval) {
-                               langwell->hsm.b_bus_req = 0;
-                               otg_dbg("LS is not SE0, try again later\n");
-                       } else {
-                               /* Start SRP */
-                               langwell_otg_start_srp(&langwell->otg);
-                               langwell_otg_add_timer(b_srp_res_tmr);
-                       }
-               }
-               break;
-       case OTG_STATE_B_SRP_INIT:
-               if (!langwell->hsm.id) {
-                       langwell->otg.default_a = 1;
-                       langwell->hsm.a_srp_det = 0;
-
-                       langwell_otg_drv_vbus(0);
-                       langwell_otg_chrg_vbus(0);
-
-                       langwell->otg.state = OTG_STATE_A_IDLE;
-                       queue_work(langwell->qwork, &langwell->work);
-               } else if (langwell->hsm.b_sess_vld) {
-                       langwell_otg_chrg_vbus(0);
-                       if (langwell->client_ops) {
-                               langwell->client_ops->resume(langwell->pdev);
-                               langwell->otg.state = OTG_STATE_B_PERIPHERAL;
-                       } else
-                               otg_dbg("client driver not loaded.\n");
-               }
-               break;
-       case OTG_STATE_B_PERIPHERAL:
-               if (!langwell->hsm.id) {
-                       langwell->otg.default_a = 1;
-                       langwell->hsm.a_srp_det = 0;
-
-                       langwell_otg_drv_vbus(0);
-                       langwell_otg_chrg_vbus(0);
-                       set_host_mode();
-
-                       if (langwell->client_ops) {
-                               langwell->client_ops->suspend(langwell->pdev,
-                                       PMSG_FREEZE);
-                       } else
-                               otg_dbg("client driver has been removed.\n");
-
-                       langwell->otg.state = OTG_STATE_A_IDLE;
-                       queue_work(langwell->qwork, &langwell->work);
-               } else if (!langwell->hsm.b_sess_vld) {
-                       langwell->hsm.b_hnp_enable = 0;
-
-                       if (langwell->client_ops) {
-                               langwell->client_ops->suspend(langwell->pdev,
-                                       PMSG_FREEZE);
-                       } else
-                               otg_dbg("client driver has been removed.\n");
-
-                       langwell->otg.state = OTG_STATE_B_IDLE;
-               } else if (langwell->hsm.b_bus_req && langwell->hsm.b_hnp_enable
-                       && langwell->hsm.a_bus_suspend) {
-
-                       if (langwell->client_ops) {
-                               langwell->client_ops->suspend(langwell->pdev,
-                                       PMSG_FREEZE);
-                       } else
-                               otg_dbg("client driver has been removed.\n");
-
-                       langwell_otg_HAAR(1);
-                       langwell->hsm.a_conn = 0;
-
-                       if (langwell->host_ops) {
-                               langwell->host_ops->probe(langwell->pdev,
-                                       langwell->host_ops->id_table);
-                               langwell->otg.state = OTG_STATE_B_WAIT_ACON;
-                       } else
-                               otg_dbg("host driver not loaded.\n");
-
-                       langwell->hsm.a_bus_resume = 0;
-                       langwell->hsm.b_ase0_brst_tmout = 0;
-                       langwell_otg_add_timer(b_ase0_brst_tmr);
-               }
-               break;
-
-       case OTG_STATE_B_WAIT_ACON:
-               if (!langwell->hsm.id) {
-                       langwell_otg_del_timer(b_ase0_brst_tmr);
-                       langwell->otg.default_a = 1;
-                       langwell->hsm.a_srp_det = 0;
-
-                       langwell_otg_drv_vbus(0);
-                       langwell_otg_chrg_vbus(0);
-                       set_host_mode();
-
-                       langwell_otg_HAAR(0);
-                       if (langwell->host_ops)
-                               langwell->host_ops->remove(langwell->pdev);
-                       else
-                               otg_dbg("host driver has been removed.\n");
-                       langwell->otg.state = OTG_STATE_A_IDLE;
-                       queue_work(langwell->qwork, &langwell->work);
-               } else if (!langwell->hsm.b_sess_vld) {
-                       langwell_otg_del_timer(b_ase0_brst_tmr);
-                       langwell->hsm.b_hnp_enable = 0;
-                       langwell->hsm.b_bus_req = 0;
-                       langwell_otg_chrg_vbus(0);
-                       langwell_otg_HAAR(0);
-
-                       if (langwell->host_ops)
-                               langwell->host_ops->remove(langwell->pdev);
-                       else
-                               otg_dbg("host driver has been removed.\n");
-                       langwell->otg.state = OTG_STATE_B_IDLE;
-               } else if (langwell->hsm.a_conn) {
-                       langwell_otg_del_timer(b_ase0_brst_tmr);
-                       langwell_otg_HAAR(0);
-                       langwell->otg.state = OTG_STATE_B_HOST;
-                       queue_work(langwell->qwork, &langwell->work);
-               } else if (langwell->hsm.a_bus_resume ||
-                               langwell->hsm.b_ase0_brst_tmout) {
-                       langwell_otg_del_timer(b_ase0_brst_tmr);
-                       langwell_otg_HAAR(0);
-                       langwell_otg_nsf_msg(7);
-
-                       if (langwell->host_ops)
-                               langwell->host_ops->remove(langwell->pdev);
-                       else
-                               otg_dbg("host driver has been removed.\n");
-
-                       langwell->hsm.a_bus_suspend = 0;
-                       langwell->hsm.b_bus_req = 0;
-
-                       if (langwell->client_ops)
-                               langwell->client_ops->resume(langwell->pdev);
-                       else
-                               otg_dbg("client driver not loaded.\n");
-
-                       langwell->otg.state = OTG_STATE_B_PERIPHERAL;
-               }
-               break;
-
-       case OTG_STATE_B_HOST:
-               if (!langwell->hsm.id) {
-                       langwell->otg.default_a = 1;
-                       langwell->hsm.a_srp_det = 0;
-
-                       langwell_otg_drv_vbus(0);
-                       langwell_otg_chrg_vbus(0);
-                       set_host_mode();
-                       if (langwell->host_ops)
-                               langwell->host_ops->remove(langwell->pdev);
-                       else
-                               otg_dbg("host driver has been removed.\n");
-                       langwell->otg.state = OTG_STATE_A_IDLE;
-                       queue_work(langwell->qwork, &langwell->work);
-               } else if (!langwell->hsm.b_sess_vld) {
-                       langwell->hsm.b_hnp_enable = 0;
-                       langwell->hsm.b_bus_req = 0;
-                       langwell_otg_chrg_vbus(0);
-                       if (langwell->host_ops)
-                               langwell->host_ops->remove(langwell->pdev);
-                       else
-                               otg_dbg("host driver has been removed.\n");
-                       langwell->otg.state = OTG_STATE_B_IDLE;
-               } else if ((!langwell->hsm.b_bus_req) ||
-                               (!langwell->hsm.a_conn)) {
-                       langwell->hsm.b_bus_req = 0;
-                       langwell_otg_loc_sof(0);
-                       if (langwell->host_ops)
-                               langwell->host_ops->remove(langwell->pdev);
-                       else
-                               otg_dbg("host driver has been removed.\n");
-
-                       langwell->hsm.a_bus_suspend = 0;
-
-                       if (langwell->client_ops)
-                               langwell->client_ops->resume(langwell->pdev);
-                       else
-                               otg_dbg("client driver not loaded.\n");
-
-                       langwell->otg.state = OTG_STATE_B_PERIPHERAL;
-               }
-               break;
-
-       case OTG_STATE_A_IDLE:
-               langwell->otg.default_a = 1;
-               if (langwell->hsm.id) {
-                       langwell->otg.default_a = 0;
-                       langwell->hsm.b_bus_req = 0;
-                       langwell_otg_drv_vbus(0);
-                       langwell_otg_chrg_vbus(0);
-
-                       langwell->otg.state = OTG_STATE_B_IDLE;
-                       queue_work(langwell->qwork, &langwell->work);
-               } else if (langwell->hsm.a_sess_vld) {
-                       langwell_otg_drv_vbus(1);
-                       langwell->hsm.a_srp_det = 1;
-                       langwell->hsm.a_wait_vrise_tmout = 0;
-                       langwell_otg_add_timer(a_wait_vrise_tmr);
-                       langwell->otg.state = OTG_STATE_A_WAIT_VRISE;
-                       queue_work(langwell->qwork, &langwell->work);
-               } else if (!langwell->hsm.a_bus_drop &&
-                       (langwell->hsm.a_srp_det || langwell->hsm.a_bus_req)) {
-                       langwell_otg_drv_vbus(1);
-                       langwell->hsm.a_wait_vrise_tmout = 0;
-                       langwell_otg_add_timer(a_wait_vrise_tmr);
-                       langwell->otg.state = OTG_STATE_A_WAIT_VRISE;
-                       queue_work(langwell->qwork, &langwell->work);
-               }
-               break;
-       case OTG_STATE_A_WAIT_VRISE:
-               if (langwell->hsm.id) {
-                       langwell_otg_del_timer(a_wait_vrise_tmr);
-                       langwell->hsm.b_bus_req = 0;
-                       langwell->otg.default_a = 0;
-                       langwell_otg_drv_vbus(0);
-                       langwell->otg.state = OTG_STATE_B_IDLE;
-               } else if (langwell->hsm.a_vbus_vld) {
-                       langwell_otg_del_timer(a_wait_vrise_tmr);
-                       if (langwell->host_ops)
-                               langwell->host_ops->probe(langwell->pdev,
-                                               langwell->host_ops->id_table);
-                       else
-                               otg_dbg("host driver not loaded.\n");
-                       langwell->hsm.b_conn = 0;
-                       langwell->hsm.a_set_b_hnp_en = 0;
-                       langwell->hsm.a_wait_bcon_tmout = 0;
-                       langwell_otg_add_timer(a_wait_bcon_tmr);
-                       langwell->otg.state = OTG_STATE_A_WAIT_BCON;
-               } else if (langwell->hsm.a_wait_vrise_tmout) {
-                       if (langwell->hsm.a_vbus_vld) {
-                               if (langwell->host_ops)
-                                       langwell->host_ops->probe(
-                                               langwell->pdev,
-                                               langwell->host_ops->id_table);
-                               else
-                                       otg_dbg("host driver not loaded.\n");
-                               langwell->hsm.b_conn = 0;
-                               langwell->hsm.a_set_b_hnp_en = 0;
-                               langwell->hsm.a_wait_bcon_tmout = 0;
-                               langwell_otg_add_timer(a_wait_bcon_tmr);
-                               langwell->otg.state = OTG_STATE_A_WAIT_BCON;
-                       } else {
-                               langwell_otg_drv_vbus(0);
-                               langwell->otg.state = OTG_STATE_A_VBUS_ERR;
-                       }
-               }
-               break;
-       case OTG_STATE_A_WAIT_BCON:
-               if (langwell->hsm.id) {
-                       langwell_otg_del_timer(a_wait_bcon_tmr);
-
-                       langwell->otg.default_a = 0;
-                       langwell->hsm.b_bus_req = 0;
-                       if (langwell->host_ops)
-                               langwell->host_ops->remove(langwell->pdev);
-                       else
-                               otg_dbg("host driver has been removed.\n");
-                       langwell_otg_drv_vbus(0);
-                       langwell->otg.state = OTG_STATE_B_IDLE;
-                       queue_work(langwell->qwork, &langwell->work);
-               } else if (!langwell->hsm.a_vbus_vld) {
-                       langwell_otg_del_timer(a_wait_bcon_tmr);
-
-                       if (langwell->host_ops)
-                               langwell->host_ops->remove(langwell->pdev);
-                       else
-                               otg_dbg("host driver has been removed.\n");
-                       langwell_otg_drv_vbus(0);
-                       langwell->otg.state = OTG_STATE_A_VBUS_ERR;
-               } else if (langwell->hsm.a_bus_drop ||
-                               (langwell->hsm.a_wait_bcon_tmout &&
-                               !langwell->hsm.a_bus_req)) {
-                       langwell_otg_del_timer(a_wait_bcon_tmr);
-
-                       if (langwell->host_ops)
-                               langwell->host_ops->remove(langwell->pdev);
-                       else
-                               otg_dbg("host driver has been removed.\n");
-                       langwell_otg_drv_vbus(0);
-                       langwell->otg.state = OTG_STATE_A_WAIT_VFALL;
-               } else if (langwell->hsm.b_conn) {
-                       langwell_otg_del_timer(a_wait_bcon_tmr);
-
-                       langwell->hsm.a_suspend_req = 0;
-                       langwell->otg.state = OTG_STATE_A_HOST;
-                       if (!langwell->hsm.a_bus_req &&
-                               langwell->hsm.a_set_b_hnp_en) {
-                               /* It is not safe enough to do a fast
-                                * transistion from A_WAIT_BCON to
-                                * A_SUSPEND */
-                               msleep(10000);
-                               if (langwell->hsm.a_bus_req)
-                                       break;
-
-                               if (request_irq(langwell->pdev->irq,
-                                       otg_dummy_irq, IRQF_SHARED,
-                                       driver_name, langwell->regs) != 0) {
-                                       otg_dbg("request interrupt %d fail\n",
-                                       langwell->pdev->irq);
-                               }
-
-                               langwell_otg_HABA(1);
-                               langwell->hsm.b_bus_resume = 0;
-                               langwell->hsm.a_aidl_bdis_tmout = 0;
-                               langwell_otg_add_timer(a_aidl_bdis_tmr);
-
-                               langwell_otg_loc_sof(0);
-                               langwell->otg.state = OTG_STATE_A_SUSPEND;
-                       } else if (!langwell->hsm.a_bus_req &&
-                               !langwell->hsm.a_set_b_hnp_en) {
-                               struct pci_dev *pdev = langwell->pdev;
-                               if (langwell->host_ops)
-                                       langwell->host_ops->remove(pdev);
-                               else
-                                       otg_dbg("host driver removed.\n");
-                               langwell_otg_drv_vbus(0);
-                               langwell->otg.state = OTG_STATE_A_WAIT_VFALL;
-                       }
-               }
-               break;
-       case OTG_STATE_A_HOST:
-               if (langwell->hsm.id) {
-                       langwell->otg.default_a = 0;
-                       langwell->hsm.b_bus_req = 0;
-                       if (langwell->host_ops)
-                               langwell->host_ops->remove(langwell->pdev);
-                       else
-                               otg_dbg("host driver has been removed.\n");
-                       langwell_otg_drv_vbus(0);
-                       langwell->otg.state = OTG_STATE_B_IDLE;
-                       queue_work(langwell->qwork, &langwell->work);
-               } else if (langwell->hsm.a_bus_drop ||
-               (!langwell->hsm.a_set_b_hnp_en && !langwell->hsm.a_bus_req)) {
-                       if (langwell->host_ops)
-                               langwell->host_ops->remove(langwell->pdev);
-                       else
-                               otg_dbg("host driver has been removed.\n");
-                       langwell_otg_drv_vbus(0);
-                       langwell->otg.state = OTG_STATE_A_WAIT_VFALL;
-               } else if (!langwell->hsm.a_vbus_vld) {
-                       if (langwell->host_ops)
-                               langwell->host_ops->remove(langwell->pdev);
-                       else
-                               otg_dbg("host driver has been removed.\n");
-                       langwell_otg_drv_vbus(0);
-                       langwell->otg.state = OTG_STATE_A_VBUS_ERR;
-               } else if (langwell->hsm.a_set_b_hnp_en
-                               && !langwell->hsm.a_bus_req) {
-                       /* Set HABA to enable hardware assistance to signal
-                        *  A-connect after receiver B-disconnect. Hardware
-                        *  will then set client mode and enable URE, SLE and
-                        *  PCE after the assistance. otg_dummy_irq is used to
-                        *  clean these ints when client driver is not resumed.
-                        */
-                       if (request_irq(langwell->pdev->irq,
-                               otg_dummy_irq, IRQF_SHARED, driver_name,
-                               langwell->regs) != 0) {
-                               otg_dbg("request interrupt %d failed\n",
-                                               langwell->pdev->irq);
-                       }
-
-                       /* set HABA */
-                       langwell_otg_HABA(1);
-                       langwell->hsm.b_bus_resume = 0;
-                       langwell->hsm.a_aidl_bdis_tmout = 0;
-                       langwell_otg_add_timer(a_aidl_bdis_tmr);
-                       langwell_otg_loc_sof(0);
-                       langwell->otg.state = OTG_STATE_A_SUSPEND;
-               } else if (!langwell->hsm.b_conn || !langwell->hsm.a_bus_req) {
-                       langwell->hsm.a_wait_bcon_tmout = 0;
-                       langwell->hsm.a_set_b_hnp_en = 0;
-                       langwell_otg_add_timer(a_wait_bcon_tmr);
-                       langwell->otg.state = OTG_STATE_A_WAIT_BCON;
-               }
-               break;
-       case OTG_STATE_A_SUSPEND:
-               if (langwell->hsm.id) {
-                       langwell_otg_del_timer(a_aidl_bdis_tmr);
-                       langwell_otg_HABA(0);
-                       free_irq(langwell->pdev->irq, langwell->regs);
-                       langwell->otg.default_a = 0;
-                       langwell->hsm.b_bus_req = 0;
-                       if (langwell->host_ops)
-                               langwell->host_ops->remove(langwell->pdev);
-                       else
-                               otg_dbg("host driver has been removed.\n");
-                       langwell_otg_drv_vbus(0);
-                       langwell->otg.state = OTG_STATE_B_IDLE;
-                       queue_work(langwell->qwork, &langwell->work);
-               } else if (langwell->hsm.a_bus_req ||
-                               langwell->hsm.b_bus_resume) {
-                       langwell_otg_del_timer(a_aidl_bdis_tmr);
-                       langwell_otg_HABA(0);
-                       free_irq(langwell->pdev->irq, langwell->regs);
-                       langwell->hsm.a_suspend_req = 0;
-                       langwell_otg_loc_sof(1);
-                       langwell->otg.state = OTG_STATE_A_HOST;
-               } else if (langwell->hsm.a_aidl_bdis_tmout ||
-                               langwell->hsm.a_bus_drop) {
-                       langwell_otg_del_timer(a_aidl_bdis_tmr);
-                       langwell_otg_HABA(0);
-                       free_irq(langwell->pdev->irq, langwell->regs);
-                       if (langwell->host_ops)
-                               langwell->host_ops->remove(langwell->pdev);
-                       else
-                               otg_dbg("host driver has been removed.\n");
-                       langwell_otg_drv_vbus(0);
-                       langwell->otg.state = OTG_STATE_A_WAIT_VFALL;
-               } else if (!langwell->hsm.b_conn &&
-                               langwell->hsm.a_set_b_hnp_en) {
-                       langwell_otg_del_timer(a_aidl_bdis_tmr);
-                       langwell_otg_HABA(0);
-                       free_irq(langwell->pdev->irq, langwell->regs);
-
-                       if (langwell->host_ops)
-                               langwell->host_ops->remove(langwell->pdev);
-                       else
-                               otg_dbg("host driver has been removed.\n");
-
-                       langwell->hsm.b_bus_suspend = 0;
-                       langwell->hsm.b_bus_suspend_vld = 0;
-                       langwell->hsm.b_bus_suspend_tmout = 0;
-
-                       /* msleep(200); */
-                       if (langwell->client_ops)
-                               langwell->client_ops->resume(langwell->pdev);
-                       else
-                               otg_dbg("client driver not loaded.\n");
-
-                       langwell_otg_add_timer(b_bus_suspend_tmr);
-                       langwell->otg.state = OTG_STATE_A_PERIPHERAL;
-                       break;
-               } else if (!langwell->hsm.a_vbus_vld) {
-                       langwell_otg_del_timer(a_aidl_bdis_tmr);
-                       langwell_otg_HABA(0);
-                       free_irq(langwell->pdev->irq, langwell->regs);
-                       if (langwell->host_ops)
-                               langwell->host_ops->remove(langwell->pdev);
-                       else
-                               otg_dbg("host driver has been removed.\n");
-                       langwell_otg_drv_vbus(0);
-                       langwell->otg.state = OTG_STATE_A_VBUS_ERR;
-               }
-               break;
-       case OTG_STATE_A_PERIPHERAL:
-               if (langwell->hsm.id) {
-                       langwell_otg_del_timer(b_bus_suspend_tmr);
-                       langwell->otg.default_a = 0;
-                       langwell->hsm.b_bus_req = 0;
-                       if (langwell->client_ops)
-                               langwell->client_ops->suspend(langwell->pdev,
-                                       PMSG_FREEZE);
-                       else
-                               otg_dbg("client driver has been removed.\n");
-                       langwell_otg_drv_vbus(0);
-                       langwell->otg.state = OTG_STATE_B_IDLE;
-                       queue_work(langwell->qwork, &langwell->work);
-               } else if (!langwell->hsm.a_vbus_vld) {
-                       langwell_otg_del_timer(b_bus_suspend_tmr);
-                       if (langwell->client_ops)
-                               langwell->client_ops->suspend(langwell->pdev,
-                                       PMSG_FREEZE);
-                       else
-                               otg_dbg("client driver has been removed.\n");
-                       langwell_otg_drv_vbus(0);
-                       langwell->otg.state = OTG_STATE_A_VBUS_ERR;
-               } else if (langwell->hsm.a_bus_drop) {
-                       langwell_otg_del_timer(b_bus_suspend_tmr);
-                       if (langwell->client_ops)
-                               langwell->client_ops->suspend(langwell->pdev,
-                                       PMSG_FREEZE);
-                       else
-                               otg_dbg("client driver has been removed.\n");
-                       langwell_otg_drv_vbus(0);
-                       langwell->otg.state = OTG_STATE_A_WAIT_VFALL;
-               } else if (langwell->hsm.b_bus_suspend) {
-                       langwell_otg_del_timer(b_bus_suspend_tmr);
-                       if (langwell->client_ops)
-                               langwell->client_ops->suspend(langwell->pdev,
-                                       PMSG_FREEZE);
-                       else
-                               otg_dbg("client driver has been removed.\n");
-
-                       if (langwell->host_ops)
-                               langwell->host_ops->probe(langwell->pdev,
-                                               langwell->host_ops->id_table);
-                       else
-                               otg_dbg("host driver not loaded.\n");
-                       langwell->hsm.a_set_b_hnp_en = 0;
-                       langwell->hsm.a_wait_bcon_tmout = 0;
-                       langwell_otg_add_timer(a_wait_bcon_tmr);
-                       langwell->otg.state = OTG_STATE_A_WAIT_BCON;
-               } else if (langwell->hsm.b_bus_suspend_tmout) {
-                       u32     val;
-                       val = readl(langwell->regs + CI_PORTSC1);
-                       if (!(val & PORTSC_SUSP))
-                               break;
-                       if (langwell->client_ops)
-                               langwell->client_ops->suspend(langwell->pdev,
-                                               PMSG_FREEZE);
-                       else
-                               otg_dbg("client driver has been removed.\n");
-                       if (langwell->host_ops)
-                               langwell->host_ops->probe(langwell->pdev,
-                                               langwell->host_ops->id_table);
-                       else
-                               otg_dbg("host driver not loaded.\n");
-                       langwell->hsm.a_set_b_hnp_en = 0;
-                       langwell->hsm.a_wait_bcon_tmout = 0;
-                       langwell_otg_add_timer(a_wait_bcon_tmr);
-                       langwell->otg.state = OTG_STATE_A_WAIT_BCON;
-               }
-               break;
-       case OTG_STATE_A_VBUS_ERR:
-               if (langwell->hsm.id) {
-                       langwell->otg.default_a = 0;
-                       langwell->hsm.a_clr_err = 0;
-                       langwell->hsm.a_srp_det = 0;
-                       langwell->otg.state = OTG_STATE_B_IDLE;
-                       queue_work(langwell->qwork, &langwell->work);
-               } else if (langwell->hsm.a_clr_err) {
-                       langwell->hsm.a_clr_err = 0;
-                       langwell->hsm.a_srp_det = 0;
-                       reset_otg();
-                       init_hsm();
-                       if (langwell->otg.state == OTG_STATE_A_IDLE)
-                               queue_work(langwell->qwork, &langwell->work);
-               }
-               break;
-       case OTG_STATE_A_WAIT_VFALL:
-               if (langwell->hsm.id) {
-                       langwell->otg.default_a = 0;
-                       langwell->otg.state = OTG_STATE_B_IDLE;
-                       queue_work(langwell->qwork, &langwell->work);
-               } else if (langwell->hsm.a_bus_req) {
-                       langwell_otg_drv_vbus(1);
-                       langwell->hsm.a_wait_vrise_tmout = 0;
-                       langwell_otg_add_timer(a_wait_vrise_tmr);
-                       langwell->otg.state = OTG_STATE_A_WAIT_VRISE;
-               } else if (!langwell->hsm.a_sess_vld) {
-                       langwell->hsm.a_srp_det = 0;
-                       langwell_otg_drv_vbus(0);
-                       set_host_mode();
-                       langwell->otg.state = OTG_STATE_A_IDLE;
-               }
-               break;
-       default:
-               ;
-       }
-
-       otg_dbg("%s: new state = %s\n", __func__,
-                       state_string(langwell->otg.state));
-}
-
-       static ssize_t
-show_registers(struct device *_dev, struct device_attribute *attr, char *buf)
-{
-       struct langwell_otg *langwell;
-       char *next;
-       unsigned size;
-       unsigned t;
-
-       langwell = the_transceiver;
-       next = buf;
-       size = PAGE_SIZE;
-
-       t = scnprintf(next, size,
-               "\n"
-               "USBCMD = 0x%08x \n"
-               "USBSTS = 0x%08x \n"
-               "USBINTR = 0x%08x \n"
-               "ASYNCLISTADDR = 0x%08x \n"
-               "PORTSC1 = 0x%08x \n"
-               "HOSTPC1 = 0x%08x \n"
-               "OTGSC = 0x%08x \n"
-               "USBMODE = 0x%08x \n",
-               readl(langwell->regs + 0x30),
-               readl(langwell->regs + 0x34),
-               readl(langwell->regs + 0x38),
-               readl(langwell->regs + 0x48),
-               readl(langwell->regs + 0x74),
-               readl(langwell->regs + 0xb4),
-               readl(langwell->regs + 0xf4),
-               readl(langwell->regs + 0xf8)
-               );
-       size -= t;
-       next += t;
-
-       return PAGE_SIZE - size;
-}
-static DEVICE_ATTR(registers, S_IRUGO, show_registers, NULL);
-
-static ssize_t
-show_hsm(struct device *_dev, struct device_attribute *attr, char *buf)
-{
-       struct langwell_otg *langwell;
-       char *next;
-       unsigned size;
-       unsigned t;
-
-       langwell = the_transceiver;
-       next = buf;
-       size = PAGE_SIZE;
-
-       t = scnprintf(next, size,
-               "\n"
-               "current state = %s\n"
-               "a_bus_resume = \t%d\n"
-               "a_bus_suspend = \t%d\n"
-               "a_conn = \t%d\n"
-               "a_sess_vld = \t%d\n"
-               "a_srp_det = \t%d\n"
-               "a_vbus_vld = \t%d\n"
-               "b_bus_resume = \t%d\n"
-               "b_bus_suspend = \t%d\n"
-               "b_conn = \t%d\n"
-               "b_se0_srp = \t%d\n"
-               "b_sess_end = \t%d\n"
-               "b_sess_vld = \t%d\n"
-               "id = \t%d\n"
-               "a_set_b_hnp_en = \t%d\n"
-               "b_srp_done = \t%d\n"
-               "b_hnp_enable = \t%d\n"
-               "a_wait_vrise_tmout = \t%d\n"
-               "a_wait_bcon_tmout = \t%d\n"
-               "a_aidl_bdis_tmout = \t%d\n"
-               "b_ase0_brst_tmout = \t%d\n"
-               "a_bus_drop = \t%d\n"
-               "a_bus_req = \t%d\n"
-               "a_clr_err = \t%d\n"
-               "a_suspend_req = \t%d\n"
-               "b_bus_req = \t%d\n"
-               "b_bus_suspend_tmout = \t%d\n"
-               "b_bus_suspend_vld = \t%d\n",
-               state_string(langwell->otg.state),
-               langwell->hsm.a_bus_resume,
-               langwell->hsm.a_bus_suspend,
-               langwell->hsm.a_conn,
-               langwell->hsm.a_sess_vld,
-               langwell->hsm.a_srp_det,
-               langwell->hsm.a_vbus_vld,
-               langwell->hsm.b_bus_resume,
-               langwell->hsm.b_bus_suspend,
-               langwell->hsm.b_conn,
-               langwell->hsm.b_se0_srp,
-               langwell->hsm.b_sess_end,
-               langwell->hsm.b_sess_vld,
-               langwell->hsm.id,
-               langwell->hsm.a_set_b_hnp_en,
-               langwell->hsm.b_srp_done,
-               langwell->hsm.b_hnp_enable,
-               langwell->hsm.a_wait_vrise_tmout,
-               langwell->hsm.a_wait_bcon_tmout,
-               langwell->hsm.a_aidl_bdis_tmout,
-               langwell->hsm.b_ase0_brst_tmout,
-               langwell->hsm.a_bus_drop,
-               langwell->hsm.a_bus_req,
-               langwell->hsm.a_clr_err,
-               langwell->hsm.a_suspend_req,
-               langwell->hsm.b_bus_req,
-               langwell->hsm.b_bus_suspend_tmout,
-               langwell->hsm.b_bus_suspend_vld
-               );
-       size -= t;
-       next += t;
-
-       return PAGE_SIZE - size;
-}
-static DEVICE_ATTR(hsm, S_IRUGO, show_hsm, NULL);
-
-static ssize_t
-get_a_bus_req(struct device *dev, struct device_attribute *attr, char *buf)
-{
-       struct langwell_otg *langwell;
-       char *next;
-       unsigned size;
-       unsigned t;
-
-       langwell =  the_transceiver;
-       next = buf;
-       size = PAGE_SIZE;
-
-       t = scnprintf(next, size, "%d", langwell->hsm.a_bus_req);
-       size -= t;
-       next += t;
-
-       return PAGE_SIZE - size;
-}
-
-static ssize_t
-set_a_bus_req(struct device *dev, struct device_attribute *attr,
-               const char *buf, size_t count)
-{
-       struct langwell_otg *langwell;
-       langwell = the_transceiver;
-       if (!langwell->otg.default_a)
-               return -1;
-       if (count > 2)
-               return -1;
-
-       if (buf[0] == '0') {
-               langwell->hsm.a_bus_req = 0;
-               otg_dbg("a_bus_req = 0\n");
-       } else if (buf[0] == '1') {
-               /* If a_bus_drop is TRUE, a_bus_req can't be set */
-               if (langwell->hsm.a_bus_drop)
-                       return -1;
-               langwell->hsm.a_bus_req = 1;
-               otg_dbg("a_bus_req = 1\n");
-       }
-       if (spin_trylock(&langwell->wq_lock)) {
-               queue_work(langwell->qwork, &langwell->work);
-               spin_unlock(&langwell->wq_lock);
-       }
-       return count;
-}
-static DEVICE_ATTR(a_bus_req, S_IRUGO | S_IWUGO, get_a_bus_req, set_a_bus_req);
-
-static ssize_t
-get_a_bus_drop(struct device *dev, struct device_attribute *attr, char *buf)
-{
-       struct langwell_otg *langwell;
-       char *next;
-       unsigned size;
-       unsigned t;
-
-       langwell =  the_transceiver;
-       next = buf;
-       size = PAGE_SIZE;
-
-       t = scnprintf(next, size, "%d", langwell->hsm.a_bus_drop);
-       size -= t;
-       next += t;
-
-       return PAGE_SIZE - size;
-}
-
-static ssize_t
-set_a_bus_drop(struct device *dev, struct device_attribute *attr,
-               const char *buf, size_t count)
-{
-       struct langwell_otg *langwell;
-       langwell = the_transceiver;
-       if (!langwell->otg.default_a)
-               return -1;
-       if (count > 2)
-               return -1;
-
-       if (buf[0] == '0') {
-               langwell->hsm.a_bus_drop = 0;
-               otg_dbg("a_bus_drop = 0\n");
-       } else if (buf[0] == '1') {
-               langwell->hsm.a_bus_drop = 1;
-               langwell->hsm.a_bus_req = 0;
-               otg_dbg("a_bus_drop = 1, then a_bus_req = 0\n");
-       }
-       if (spin_trylock(&langwell->wq_lock)) {
-               queue_work(langwell->qwork, &langwell->work);
-               spin_unlock(&langwell->wq_lock);
-       }
-       return count;
-}
-static DEVICE_ATTR(a_bus_drop, S_IRUGO | S_IWUGO,
-       get_a_bus_drop, set_a_bus_drop);
-
-static ssize_t
-get_b_bus_req(struct device *dev, struct device_attribute *attr, char *buf)
-{
-       struct langwell_otg *langwell;
-       char *next;
-       unsigned size;
-       unsigned t;
-
-       langwell =  the_transceiver;
-       next = buf;
-       size = PAGE_SIZE;
-
-       t = scnprintf(next, size, "%d", langwell->hsm.b_bus_req);
-       size -= t;
-       next += t;
-
-       return PAGE_SIZE - size;
-}
-
-static ssize_t
-set_b_bus_req(struct device *dev, struct device_attribute *attr,
-               const char *buf, size_t count)
-{
-       struct langwell_otg *langwell;
-       langwell = the_transceiver;
-
-       if (langwell->otg.default_a)
-               return -1;
-
-       if (count > 2)
-               return -1;
-
-       if (buf[0] == '0') {
-               langwell->hsm.b_bus_req = 0;
-               otg_dbg("b_bus_req = 0\n");
-       } else if (buf[0] == '1') {
-               langwell->hsm.b_bus_req = 1;
-               otg_dbg("b_bus_req = 1\n");
-       }
-       if (spin_trylock(&langwell->wq_lock)) {
-               queue_work(langwell->qwork, &langwell->work);
-               spin_unlock(&langwell->wq_lock);
-       }
-       return count;
-}
-static DEVICE_ATTR(b_bus_req, S_IRUGO | S_IWUGO, get_b_bus_req, set_b_bus_req);
-
-static ssize_t
-set_a_clr_err(struct device *dev, struct device_attribute *attr,
-               const char *buf, size_t count)
-{
-       struct langwell_otg *langwell;
-       langwell = the_transceiver;
-
-       if (!langwell->otg.default_a)
-               return -1;
-       if (count > 2)
-               return -1;
-
-       if (buf[0] == '1') {
-               langwell->hsm.a_clr_err = 1;
-               otg_dbg("a_clr_err = 1\n");
-       }
-       if (spin_trylock(&langwell->wq_lock)) {
-               queue_work(langwell->qwork, &langwell->work);
-               spin_unlock(&langwell->wq_lock);
-       }
-       return count;
-}
-static DEVICE_ATTR(a_clr_err, S_IWUGO, NULL, set_a_clr_err);
-
-static struct attribute *inputs_attrs[] = {
-       &dev_attr_a_bus_req.attr,
-       &dev_attr_a_bus_drop.attr,
-       &dev_attr_b_bus_req.attr,
-       &dev_attr_a_clr_err.attr,
-       NULL,
-};
-
-static struct attribute_group debug_dev_attr_group = {
-       .name = "inputs",
-       .attrs = inputs_attrs,
-};
-
-int langwell_register_host(struct pci_driver *host_driver)
-{
-       int     ret = 0;
-
-       the_transceiver->host_ops = host_driver;
-       queue_work(the_transceiver->qwork, &the_transceiver->work);
-       otg_dbg("host controller driver is registered\n");
-
-       return ret;
-}
-EXPORT_SYMBOL(langwell_register_host);
-
-void langwell_unregister_host(struct pci_driver *host_driver)
-{
-       if (the_transceiver->host_ops)
-               the_transceiver->host_ops->remove(the_transceiver->pdev);
-       the_transceiver->host_ops = NULL;
-       the_transceiver->hsm.a_bus_drop = 1;
-       queue_work(the_transceiver->qwork, &the_transceiver->work);
-       otg_dbg("host controller driver is unregistered\n");
-}
-EXPORT_SYMBOL(langwell_unregister_host);
-
-int langwell_register_peripheral(struct pci_driver *client_driver)
-{
-       int     ret = 0;
-
-       if (client_driver)
-               ret = client_driver->probe(the_transceiver->pdev,
-                               client_driver->id_table);
-       if (!ret) {
-               the_transceiver->client_ops = client_driver;
-               queue_work(the_transceiver->qwork, &the_transceiver->work);
-               otg_dbg("client controller driver is registered\n");
-       }
-
-       return ret;
-}
-EXPORT_SYMBOL(langwell_register_peripheral);
-
-void langwell_unregister_peripheral(struct pci_driver *client_driver)
-{
-       if (the_transceiver->client_ops)
-               the_transceiver->client_ops->remove(the_transceiver->pdev);
-       the_transceiver->client_ops = NULL;
-       the_transceiver->hsm.b_bus_req = 0;
-       queue_work(the_transceiver->qwork, &the_transceiver->work);
-       otg_dbg("client controller driver is unregistered\n");
-}
-EXPORT_SYMBOL(langwell_unregister_peripheral);
-
-static int langwell_otg_probe(struct pci_dev *pdev,
-               const struct pci_device_id *id)
-{
-       unsigned long           resource, len;
-       void __iomem            *base = NULL;
-       int                     retval;
-       u32                     val32;
-       struct langwell_otg     *langwell;
-       char                    qname[] = "langwell_otg_queue";
-
-       retval = 0;
-       otg_dbg("\notg controller is detected.\n");
-       if (pci_enable_device(pdev) < 0) {
-               retval = -ENODEV;
-               goto done;
-       }
-
-       langwell = kzalloc(sizeof *langwell, GFP_KERNEL);
-       if (langwell == NULL) {
-               retval = -ENOMEM;
-               goto done;
-       }
-       the_transceiver = langwell;
-
-       /* control register: BAR 0 */
-       resource = pci_resource_start(pdev, 0);
-       len = pci_resource_len(pdev, 0);
-       if (!request_mem_region(resource, len, driver_name)) {
-               retval = -EBUSY;
-               goto err;
-       }
-       langwell->region = 1;
-
-       base = ioremap_nocache(resource, len);
-       if (base == NULL) {
-               retval = -EFAULT;
-               goto err;
-       }
-       langwell->regs = base;
-
-       if (!pdev->irq) {
-               otg_dbg("No IRQ.\n");
-               retval = -ENODEV;
-               goto err;
-       }
-
-       langwell->qwork = create_workqueue(qname);
-       if (!langwell->qwork) {
-               otg_dbg("cannot create workqueue %s\n", qname);
-               retval = -ENOMEM;
-               goto err;
-       }
-       INIT_WORK(&langwell->work, langwell_otg_work);
-
-       /* OTG common part */
-       langwell->pdev = pdev;
-       langwell->otg.dev = &pdev->dev;
-       langwell->otg.label = driver_name;
-       langwell->otg.set_host = langwell_otg_set_host;
-       langwell->otg.set_peripheral = langwell_otg_set_peripheral;
-       langwell->otg.set_power = langwell_otg_set_power;
-       langwell->otg.start_srp = langwell_otg_start_srp;
-       langwell->otg.state = OTG_STATE_UNDEFINED;
-       if (otg_set_transceiver(&langwell->otg)) {
-               otg_dbg("can't set transceiver\n");
-               retval = -EBUSY;
-               goto err;
-       }
-
-       reset_otg();
-       init_hsm();
-
-       spin_lock_init(&langwell->lock);
-       spin_lock_init(&langwell->wq_lock);
-       INIT_LIST_HEAD(&active_timers);
-       langwell_otg_init_timers(&langwell->hsm);
-
-       if (request_irq(pdev->irq, otg_irq, IRQF_SHARED,
-                               driver_name, langwell) != 0) {
-               otg_dbg("request interrupt %d failed\n", pdev->irq);
-               retval = -EBUSY;
-               goto err;
-       }
-
-       /* enable OTGSC int */
-       val32 = OTGSC_DPIE | OTGSC_BSEIE | OTGSC_BSVIE |
-               OTGSC_ASVIE | OTGSC_AVVIE | OTGSC_IDIE | OTGSC_IDPU;
-       writel(val32, langwell->regs + CI_OTGSC);
-
-       retval = device_create_file(&pdev->dev, &dev_attr_registers);
-       if (retval < 0) {
-               otg_dbg("Can't register sysfs attribute: %d\n", retval);
-               goto err;
-       }
-
-       retval = device_create_file(&pdev->dev, &dev_attr_hsm);
-       if (retval < 0) {
-               otg_dbg("Can't hsm sysfs attribute: %d\n", retval);
-               goto err;
-       }
-
-       retval = sysfs_create_group(&pdev->dev.kobj, &debug_dev_attr_group);
-       if (retval < 0) {
-               otg_dbg("Can't register sysfs attr group: %d\n", retval);
-               goto err;
-       }
-
-       if (langwell->otg.state == OTG_STATE_A_IDLE)
-               queue_work(langwell->qwork, &langwell->work);
-
-       return 0;
-
-err:
-       if (the_transceiver)
-               langwell_otg_remove(pdev);
-done:
-       return retval;
-}
-
-static void langwell_otg_remove(struct pci_dev *pdev)
-{
-       struct langwell_otg *langwell;
-
-       langwell = the_transceiver;
-
-       if (langwell->qwork) {
-               flush_workqueue(langwell->qwork);
-               destroy_workqueue(langwell->qwork);
-       }
-       langwell_otg_free_timers();
-
-       /* disable OTGSC interrupt as OTGSC doesn't change in reset */
-       writel(0, langwell->regs + CI_OTGSC);
-
-       if (pdev->irq)
-               free_irq(pdev->irq, langwell);
-       if (langwell->regs)
-               iounmap(langwell->regs);
-       if (langwell->region)
-               release_mem_region(pci_resource_start(pdev, 0),
-                               pci_resource_len(pdev, 0));
-
-       otg_set_transceiver(NULL);
-       pci_disable_device(pdev);
-       sysfs_remove_group(&pdev->dev.kobj, &debug_dev_attr_group);
-       device_remove_file(&pdev->dev, &dev_attr_hsm);
-       device_remove_file(&pdev->dev, &dev_attr_registers);
-       kfree(langwell);
-       langwell = NULL;
-}
-
-static void transceiver_suspend(struct pci_dev *pdev)
-{
-       pci_save_state(pdev);
-       pci_set_power_state(pdev, PCI_D3hot);
-       langwell_otg_phy_low_power(1);
-}
-
-static int langwell_otg_suspend(struct pci_dev *pdev, pm_message_t message)
-{
-       int     ret = 0;
-       struct langwell_otg *langwell;
-
-       langwell = the_transceiver;
-
-       /* Disbale OTG interrupts */
-       langwell_otg_intr(0);
-
-       if (pdev->irq)
-               free_irq(pdev->irq, langwell);
-
-       /* Prevent more otg_work */
-       flush_workqueue(langwell->qwork);
-       spin_lock(&langwell->wq_lock);
-
-       /* start actions */
-       switch (langwell->otg.state) {
-       case OTG_STATE_A_IDLE:
-       case OTG_STATE_B_IDLE:
-       case OTG_STATE_A_WAIT_VFALL:
-       case OTG_STATE_A_VBUS_ERR:
-               transceiver_suspend(pdev);
-               break;
-       case OTG_STATE_A_WAIT_VRISE:
-               langwell_otg_del_timer(a_wait_vrise_tmr);
-               langwell->hsm.a_srp_det = 0;
-               langwell_otg_drv_vbus(0);
-               langwell->otg.state = OTG_STATE_A_IDLE;
-               transceiver_suspend(pdev);
-               break;
-       case OTG_STATE_A_WAIT_BCON:
-               langwell_otg_del_timer(a_wait_bcon_tmr);
-               if (langwell->host_ops)
-                       ret = langwell->host_ops->suspend(pdev, message);
-               langwell_otg_drv_vbus(0);
-               break;
-       case OTG_STATE_A_HOST:
-               if (langwell->host_ops)
-                       ret = langwell->host_ops->suspend(pdev, message);
-               langwell_otg_drv_vbus(0);
-               langwell_otg_phy_low_power(1);
-               break;
-       case OTG_STATE_A_SUSPEND:
-               langwell_otg_del_timer(a_aidl_bdis_tmr);
-               langwell_otg_HABA(0);
-               if (langwell->host_ops)
-                       langwell->host_ops->remove(pdev);
-               else
-                       otg_dbg("host driver has been removed.\n");
-               langwell_otg_drv_vbus(0);
-               transceiver_suspend(pdev);
-               langwell->otg.state = OTG_STATE_A_WAIT_VFALL;
-               break;
-       case OTG_STATE_A_PERIPHERAL:
-               if (langwell->client_ops)
-                       ret = langwell->client_ops->suspend(pdev, message);
-               else
-                       otg_dbg("client driver has been removed.\n");
-               langwell_otg_drv_vbus(0);
-               transceiver_suspend(pdev);
-               langwell->otg.state = OTG_STATE_A_WAIT_VFALL;
-               break;
-       case OTG_STATE_B_HOST:
-               if (langwell->host_ops)
-                       langwell->host_ops->remove(pdev);
-               else
-                       otg_dbg("host driver has been removed.\n");
-               langwell->hsm.b_bus_req = 0;
-               transceiver_suspend(pdev);
-               langwell->otg.state = OTG_STATE_B_IDLE;
-               break;
-       case OTG_STATE_B_PERIPHERAL:
-               if (langwell->client_ops)
-                       ret = langwell->client_ops->suspend(pdev, message);
-               else
-                       otg_dbg("client driver has been removed.\n");
-               break;
-       case OTG_STATE_B_WAIT_ACON:
-               langwell_otg_del_timer(b_ase0_brst_tmr);
-               langwell_otg_HAAR(0);
-               if (langwell->host_ops)
-                       langwell->host_ops->remove(pdev);
-               else
-                       otg_dbg("host driver has been removed.\n");
-               langwell->hsm.b_bus_req = 0;
-               langwell->otg.state = OTG_STATE_B_IDLE;
-               transceiver_suspend(pdev);
-               break;
-       default:
-               otg_dbg("error state before suspend\n ");
-               break;
-       }
-       spin_unlock(&langwell->wq_lock);
-
-       return ret;
-}
-
-static void transceiver_resume(struct pci_dev *pdev)
-{
-       pci_restore_state(pdev);
-       pci_set_power_state(pdev, PCI_D0);
-       langwell_otg_phy_low_power(0);
-}
-
-static int langwell_otg_resume(struct pci_dev *pdev)
-{
-       int     ret = 0;
-       struct langwell_otg *langwell;
-
-       langwell = the_transceiver;
-
-       spin_lock(&langwell->wq_lock);
-
-       switch (langwell->otg.state) {
-       case OTG_STATE_A_IDLE:
-       case OTG_STATE_B_IDLE:
-       case OTG_STATE_A_WAIT_VFALL:
-       case OTG_STATE_A_VBUS_ERR:
-               transceiver_resume(pdev);
-               break;
-       case OTG_STATE_A_WAIT_BCON:
-               langwell_otg_add_timer(a_wait_bcon_tmr);
-               langwell_otg_drv_vbus(1);
-               if (langwell->host_ops)
-                       ret = langwell->host_ops->resume(pdev);
-               break;
-       case OTG_STATE_A_HOST:
-               langwell_otg_drv_vbus(1);
-               langwell_otg_phy_low_power(0);
-               if (langwell->host_ops)
-                       ret = langwell->host_ops->resume(pdev);
-               break;
-       case OTG_STATE_B_PERIPHERAL:
-               if (langwell->client_ops)
-                       ret = langwell->client_ops->resume(pdev);
-               else
-                       otg_dbg("client driver not loaded.\n");
-               break;
-       default:
-               otg_dbg("error state before suspend\n ");
-               break;
-       }
-
-       if (request_irq(pdev->irq, otg_irq, IRQF_SHARED,
-                               driver_name, the_transceiver) != 0) {
-               otg_dbg("request interrupt %d failed\n", pdev->irq);
-               ret = -EBUSY;
-       }
-
-       /* enable OTG interrupts */
-       langwell_otg_intr(1);
-
-       spin_unlock(&langwell->wq_lock);
-
-       queue_work(langwell->qwork, &langwell->work);
-
-
-       return ret;
-}
-
-static int __init langwell_otg_init(void)
-{
-       return pci_register_driver(&otg_pci_driver);
-}
-module_init(langwell_otg_init);
-
-static void __exit langwell_otg_cleanup(void)
-{
-       pci_unregister_driver(&otg_pci_driver);
-}
-module_exit(langwell_otg_cleanup);
diff --git a/include/linux/usb/langwell_otg.h b/include/linux/usb/langwell_otg.h
deleted file mode 100644 (file)
index e115ae6..0000000
+++ /dev/null
@@ -1,177 +0,0 @@
-/*
- * Intel Langwell USB OTG transceiver driver
- * Copyright (C) 2008, Intel Corporation.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope 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.,
- * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
- *
- */
-
-#ifndef __LANGWELL_OTG_H__
-#define __LANGWELL_OTG_H__
-
-/* notify transceiver driver about OTG events */
-extern void langwell_update_transceiver(void);
-/* HCD register bus driver */
-extern int langwell_register_host(struct pci_driver *host_driver);
-/* HCD unregister bus driver */
-extern void langwell_unregister_host(struct pci_driver *host_driver);
-/* DCD register bus driver */
-extern int langwell_register_peripheral(struct pci_driver *client_driver);
-/* DCD unregister bus driver */
-extern void langwell_unregister_peripheral(struct pci_driver *client_driver);
-/* No silent failure, output warning message */
-extern void langwell_otg_nsf_msg(unsigned long message);
-
-#define CI_USBCMD              0x30
-#      define USBCMD_RST               BIT(1)
-#      define USBCMD_RS                BIT(0)
-#define CI_USBSTS              0x34
-#      define USBSTS_SLI               BIT(8)
-#      define USBSTS_URI               BIT(6)
-#      define USBSTS_PCI               BIT(2)
-#define CI_PORTSC1             0x74
-#      define PORTSC_PP                BIT(12)
-#      define PORTSC_LS                (BIT(11) | BIT(10))
-#      define PORTSC_SUSP              BIT(7)
-#      define PORTSC_CCS               BIT(0)
-#define CI_HOSTPC1             0xb4
-#      define HOSTPC1_PHCD             BIT(22)
-#define CI_OTGSC               0xf4
-#      define OTGSC_DPIE               BIT(30)
-#      define OTGSC_1MSE               BIT(29)
-#      define OTGSC_BSEIE              BIT(28)
-#      define OTGSC_BSVIE              BIT(27)
-#      define OTGSC_ASVIE              BIT(26)
-#      define OTGSC_AVVIE              BIT(25)
-#      define OTGSC_IDIE               BIT(24)
-#      define OTGSC_DPIS               BIT(22)
-#      define OTGSC_1MSS               BIT(21)
-#      define OTGSC_BSEIS              BIT(20)
-#      define OTGSC_BSVIS              BIT(19)
-#      define OTGSC_ASVIS              BIT(18)
-#      define OTGSC_AVVIS              BIT(17)
-#      define OTGSC_IDIS               BIT(16)
-#      define OTGSC_DPS                BIT(14)
-#      define OTGSC_1MST               BIT(13)
-#      define OTGSC_BSE                BIT(12)
-#      define OTGSC_BSV                BIT(11)
-#      define OTGSC_ASV                BIT(10)
-#      define OTGSC_AVV                BIT(9)
-#      define OTGSC_ID                 BIT(8)
-#      define OTGSC_HABA               BIT(7)
-#      define OTGSC_HADP               BIT(6)
-#      define OTGSC_IDPU               BIT(5)
-#      define OTGSC_DP                 BIT(4)
-#      define OTGSC_OT                 BIT(3)
-#      define OTGSC_HAAR               BIT(2)
-#      define OTGSC_VC                 BIT(1)
-#      define OTGSC_VD                 BIT(0)
-#      define OTGSC_INTEN_MASK         (0x7f << 24)
-#      define OTGSC_INTSTS_MASK        (0x7f << 16)
-#define CI_USBMODE             0xf8
-#      define USBMODE_CM               (BIT(1) | BIT(0))
-#      define USBMODE_IDLE             0
-#      define USBMODE_DEVICE           0x2
-#      define USBMODE_HOST             0x3
-
-#define INTR_DUMMY_MASK (USBSTS_SLI | USBSTS_URI | USBSTS_PCI)
-
-struct otg_hsm {
-       /* Input */
-       int a_bus_resume;
-       int a_bus_suspend;
-       int a_conn;
-       int a_sess_vld;
-       int a_srp_det;
-       int a_vbus_vld;
-       int b_bus_resume;
-       int b_bus_suspend;
-       int b_conn;
-       int b_se0_srp;
-       int b_sess_end;
-       int b_sess_vld;
-       int id;
-
-       /* Internal variables */
-       int a_set_b_hnp_en;
-       int b_srp_done;
-       int b_hnp_enable;
-
-       /* Timeout indicator for timers */
-       int a_wait_vrise_tmout;
-       int a_wait_bcon_tmout;
-       int a_aidl_bdis_tmout;
-       int b_ase0_brst_tmout;
-       int b_bus_suspend_tmout;
-       int b_srp_res_tmout;
-
-       /* Informative variables */
-       int a_bus_drop;
-       int a_bus_req;
-       int a_clr_err;
-       int a_suspend_req;
-       int b_bus_req;
-
-       /* Output */
-       int drv_vbus;
-       int loc_conn;
-       int loc_sof;
-
-       /* Others */
-       int b_bus_suspend_vld;
-};
-
-#define TA_WAIT_VRISE  100
-#define TA_WAIT_BCON   30000
-#define TA_AIDL_BDIS   15000
-#define TB_ASE0_BRST   5000
-#define TB_SE0_SRP     2
-#define TB_SRP_RES     100
-#define TB_BUS_SUSPEND 500
-
-struct langwell_otg_timer {
-       unsigned long expires;  /* Number of count increase to timeout */
-       unsigned long count;    /* Tick counter */
-       void (*function)(unsigned long);        /* Timeout function */
-       unsigned long data;     /* Data passed to function */
-       struct list_head list;
-};
-
-struct langwell_otg {
-       struct otg_transceiver  otg;
-       struct otg_hsm          hsm;
-       void __iomem            *regs;
-       unsigned                region;
-       struct pci_driver       *host_ops;
-       struct pci_driver       *client_ops;
-       struct pci_dev          *pdev;
-       struct work_struct      work;
-       struct workqueue_struct *qwork;
-       spinlock_t              lock;
-       spinlock_t              wq_lock;
-};
-
-static inline struct langwell_otg *otg_to_langwell(struct otg_transceiver *otg)
-{
-       return container_of(otg, struct langwell_otg, otg);
-}
-
-#ifdef DEBUG
-#define otg_dbg(fmt, args...) \
-       printk(KERN_DEBUG fmt , ## args)
-#else
-#define otg_dbg(fmt, args...) \
-       do { } while (0)
-#endif /* DEBUG */
-#endif /* __LANGWELL_OTG_H__ */