usb: otg: kill langwell_otg driver
authorAlexander Shishkin <alexander.shishkin@linux.intel.com>
Wed, 21 Dec 2011 08:19:38 +0000 (10:19 +0200)
committerFelipe Balbi <balbi@ti.com>
Tue, 24 Jan 2012 13:41:51 +0000 (15:41 +0200)
The way this driver was added by f0ae849 (usb: Add Intel Langwell USB
OTG Transceiver Driver) never even compiled together with langwell_udc,
and that's the only way for it to be useful.

Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: stable@vger.kernel.org # v2.6.31+
Cc: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Cc: Greg Kroah-Hartman <gregkh@suse.de>
Cc: Alan Cox <alan@linux.intel.com>
Cc: linux-usb@vger.kernel.org
Signed-off-by: Felipe Balbi <balbi@ti.com>
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 2a25955881fc77cb2ac97cb6d182b628aecedda7..9105c285f59413f75178ec2cf387b3c0e94dd0f7 100644 (file)
@@ -86,20 +86,6 @@ 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 && PCI && INTEL_SCU_IPC
-       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.
-
 config USB_MSM_OTG
        tristate "OTG support for Qualcomm on-chip USB controller"
        depends on (USB || USB_GADGET) && ARCH_MSM
index b2c5a9598637d98bb5d7e40e74145d33b7a20bea..41aa5098b139973a4b7e961b7227d2718690eb05 100644 (file)
@@ -13,7 +13,6 @@ obj-$(CONFIG_USB_GPIO_VBUS)   += gpio_vbus.o
 obj-$(CONFIG_ISP1301_OMAP)     += isp1301_omap.o
 obj-$(CONFIG_TWL4030_USB)      += twl4030-usb.o
 obj-$(CONFIG_TWL6030_USB)      += twl6030-usb.o
-obj-$(CONFIG_USB_LANGWELL_OTG) += langwell_otg.o
 obj-$(CONFIG_NOP_USB_XCEIV)    += nop-usb-xceiv.o
 obj-$(CONFIG_USB_ULPI)         += ulpi.o
 obj-$(CONFIG_USB_ULPI_VIEWPORT)        += ulpi_viewport.o
diff --git a/drivers/usb/otg/langwell_otg.c b/drivers/usb/otg/langwell_otg.c
deleted file mode 100644 (file)
index f08f784..0000000
+++ /dev/null
@@ -1,2347 +0,0 @@
-/*
- * Intel Langwell USB OTG transceiver driver
- * Copyright (C) 2008 - 2010, 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/usb/hcd.h>
-#include <linux/notifier.h>
-#include <linux/delay.h>
-#include <asm/intel_scu_ipc.h>
-
-#include <linux/usb/langwell_otg.h>
-
-#define        DRIVER_DESC             "Intel Langwell USB OTG transceiver driver"
-#define        DRIVER_VERSION          "July 10, 2010"
-
-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,
-};
-
-/* 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);
-       if (timer == NULL)
-               return timer;
-
-       timer->function = function;
-       timer->expires = expires;
-       timer->data = data;
-       return timer;
-}
-
-static struct langwell_otg_timer *a_wait_vrise_tmr, *a_aidl_bdis_tmr,
-       *b_se0_srp_tmr, *b_srp_init_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(void)
-{
-       struct langwell_otg *lnw = the_transceiver;
-
-       dev_dbg(lnw->dev, "transceiver is updated\n");
-
-       if (!lnw->qwork)
-               return ;
-
-       queue_work(lnw->qwork, &lnw->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 IPC commands */
-static int langwell_otg_set_vbus(struct otg_transceiver *otg, bool enabled)
-{
-       struct langwell_otg             *lnw = the_transceiver;
-       u8                              sub_id;
-
-       dev_dbg(lnw->dev, "%s <--- %s\n", __func__, enabled ? "on" : "off");
-
-       if (enabled)
-               sub_id = 0x8; /* Turn on the VBus */
-       else
-               sub_id = 0x9; /* Turn off the VBus */
-
-       if (intel_scu_ipc_simple_command(0xef, sub_id)) {
-               dev_dbg(lnw->dev, "Failed to set Vbus via IPC commands\n");
-               return -EBUSY;
-       }
-
-       dev_dbg(lnw->dev, "%s --->\n", __func__);
-
-       return 0;
-}
-
-/* charge vbus or discharge vbus through a resistor to ground */
-static void langwell_otg_chrg_vbus(int on)
-{
-       struct langwell_otg     *lnw = the_transceiver;
-       u32     val;
-
-       val = readl(lnw->iotg.base + CI_OTGSC);
-
-       if (on)
-               writel((val & ~OTGSC_INTSTS_MASK) | OTGSC_VC,
-                               lnw->iotg.base + CI_OTGSC);
-       else
-               writel((val & ~OTGSC_INTSTS_MASK) | OTGSC_VD,
-                               lnw->iotg.base + CI_OTGSC);
-}
-
-/* Start SRP */
-static int langwell_otg_start_srp(struct otg_transceiver *otg)
-{
-       struct langwell_otg             *lnw = the_transceiver;
-       struct intel_mid_otg_xceiv      *iotg = &lnw->iotg;
-       u32                             val;
-
-       dev_dbg(lnw->dev, "%s --->\n", __func__);
-
-       val = readl(iotg->base + CI_OTGSC);
-
-       writel((val & ~OTGSC_INTSTS_MASK) | OTGSC_HADP,
-                               iotg->base + CI_OTGSC);
-
-       /* Check if the data plus is finished or not */
-       msleep(8);
-       val = readl(iotg->base + CI_OTGSC);
-       if (val & (OTGSC_HADP | OTGSC_DP))
-               dev_dbg(lnw->dev, "DataLine SRP Error\n");
-
-       /* Disable interrupt - b_sess_vld */
-       val = readl(iotg->base + CI_OTGSC);
-       val &= (~(OTGSC_BSVIE | OTGSC_BSEIE));
-       writel(val, iotg->base + CI_OTGSC);
-
-       /* Start VBus SRP, drive vbus to generate VBus pulse */
-       iotg->otg.set_vbus(&iotg->otg, true);
-       msleep(15);
-       iotg->otg.set_vbus(&iotg->otg, false);
-
-       /* Enable interrupt - b_sess_vld*/
-       val = readl(iotg->base + CI_OTGSC);
-       dev_dbg(lnw->dev, "after VBUS pulse otgsc = %x\n", val);
-
-       val |= (OTGSC_BSVIE | OTGSC_BSEIE);
-       writel(val, iotg->base + CI_OTGSC);
-
-       /* If Vbus is valid, then update the hsm */
-       if (val & OTGSC_BSV) {
-               dev_dbg(lnw->dev, "no b_sess_vld interrupt\n");
-
-               lnw->iotg.hsm.b_sess_vld = 1;
-               langwell_update_transceiver();
-       }
-
-       dev_dbg(lnw->dev, "%s <---\n", __func__);
-       return 0;
-}
-
-/* stop SOF via bus_suspend */
-static void langwell_otg_loc_sof(int on)
-{
-       struct langwell_otg     *lnw = the_transceiver;
-       struct usb_hcd          *hcd;
-       int                     err;
-
-       dev_dbg(lnw->dev, "%s ---> %s\n", __func__, on ? "suspend" : "resume");
-
-       hcd = bus_to_hcd(lnw->iotg.otg.host);
-       if (on)
-               err = hcd->driver->bus_resume(hcd);
-       else
-               err = hcd->driver->bus_suspend(hcd);
-
-       if (err)
-               dev_dbg(lnw->dev, "Fail to resume/suspend USB bus - %d\n", err);
-
-       dev_dbg(lnw->dev, "%s <---\n", __func__);
-}
-
-static int langwell_otg_check_otgsc(void)
-{
-       struct langwell_otg             *lnw = the_transceiver;
-       u32                             otgsc, usbcfg;
-
-       dev_dbg(lnw->dev, "check sync OTGSC and USBCFG registers\n");
-
-       otgsc = readl(lnw->iotg.base + CI_OTGSC);
-       usbcfg = readl(lnw->usbcfg);
-
-       dev_dbg(lnw->dev, "OTGSC = %08x, USBCFG = %08x\n",
-                                       otgsc, usbcfg);
-       dev_dbg(lnw->dev, "OTGSC_AVV = %d\n", !!(otgsc & OTGSC_AVV));
-       dev_dbg(lnw->dev, "USBCFG.VBUSVAL = %d\n",
-                                       !!(usbcfg & USBCFG_VBUSVAL));
-       dev_dbg(lnw->dev, "OTGSC_ASV = %d\n", !!(otgsc & OTGSC_ASV));
-       dev_dbg(lnw->dev, "USBCFG.AVALID = %d\n",
-                                       !!(usbcfg & USBCFG_AVALID));
-       dev_dbg(lnw->dev, "OTGSC_BSV = %d\n", !!(otgsc & OTGSC_BSV));
-       dev_dbg(lnw->dev, "USBCFG.BVALID = %d\n",
-                                       !!(usbcfg & USBCFG_BVALID));
-       dev_dbg(lnw->dev, "OTGSC_BSE = %d\n", !!(otgsc & OTGSC_BSE));
-       dev_dbg(lnw->dev, "USBCFG.SESEND = %d\n",
-                                       !!(usbcfg & USBCFG_SESEND));
-
-       /* Check USBCFG VBusValid/AValid/BValid/SessEnd */
-       if (!!(otgsc & OTGSC_AVV) ^ !!(usbcfg & USBCFG_VBUSVAL)) {
-               dev_dbg(lnw->dev, "OTGSC.AVV != USBCFG.VBUSVAL\n");
-               goto err;
-       }
-       if (!!(otgsc & OTGSC_ASV) ^ !!(usbcfg & USBCFG_AVALID)) {
-               dev_dbg(lnw->dev, "OTGSC.ASV != USBCFG.AVALID\n");
-               goto err;
-       }
-       if (!!(otgsc & OTGSC_BSV) ^ !!(usbcfg & USBCFG_BVALID)) {
-               dev_dbg(lnw->dev, "OTGSC.BSV != USBCFG.BVALID\n");
-               goto err;
-       }
-       if (!!(otgsc & OTGSC_BSE) ^ !!(usbcfg & USBCFG_SESEND)) {
-               dev_dbg(lnw->dev, "OTGSC.BSE != USBCFG.SESSEN\n");
-               goto err;
-       }
-
-       dev_dbg(lnw->dev, "OTGSC and USBCFG are synced\n");
-
-       return 0;
-
-err:
-       dev_warn(lnw->dev, "OTGSC isn't equal to USBCFG\n");
-       return -EPIPE;
-}
-
-
-static void langwell_otg_phy_low_power(int on)
-{
-       struct langwell_otg             *lnw = the_transceiver;
-       struct intel_mid_otg_xceiv      *iotg = &lnw->iotg;
-       u8                              val, phcd;
-       int                             retval;
-
-       dev_dbg(lnw->dev, "%s ---> %s mode\n",
-                       __func__, on ? "Low power" : "Normal");
-
-       phcd = 0x40;
-
-       val = readb(iotg->base + CI_HOSTPC1 + 2);
-
-       if (on) {
-               /* Due to hardware issue, after set PHCD, sync will failed
-                * between USBCFG and OTGSC, so before set PHCD, check if
-                * sync is in process now. If the answer is "yes", then do
-                * not touch PHCD bit */
-               retval = langwell_otg_check_otgsc();
-               if (retval) {
-                       dev_dbg(lnw->dev, "Skip PHCD programming..\n");
-                       return ;
-               }
-
-               writeb(val | phcd, iotg->base + CI_HOSTPC1 + 2);
-       } else
-               writeb(val & ~phcd, iotg->base + CI_HOSTPC1 + 2);
-
-       dev_dbg(lnw->dev, "%s <--- done\n", __func__);
-}
-
-/* After drv vbus, add 5 ms delay to set PHCD */
-static void langwell_otg_phy_low_power_wait(int on)
-{
-       struct langwell_otg     *lnw = the_transceiver;
-
-       dev_dbg(lnw->dev, "add 5ms delay before programing PHCD\n");
-
-       mdelay(5);
-       langwell_otg_phy_low_power(on);
-}
-
-/* Enable/Disable OTG interrupt */
-static void langwell_otg_intr(int on)
-{
-       struct langwell_otg             *lnw = the_transceiver;
-       struct intel_mid_otg_xceiv      *iotg = &lnw->iotg;
-       u32                             val;
-
-       dev_dbg(lnw->dev, "%s ---> %s\n", __func__, on ? "on" : "off");
-
-       val = readl(iotg->base + CI_OTGSC);
-
-       /* OTGSC_INT_MASK doesn't contains 1msInt */
-       if (on) {
-               val = val | (OTGSC_INT_MASK);
-               writel(val, iotg->base + CI_OTGSC);
-       } else {
-               val = val & ~(OTGSC_INT_MASK);
-               writel(val, iotg->base + CI_OTGSC);
-       }
-
-       dev_dbg(lnw->dev, "%s <---\n", __func__);
-}
-
-/* set HAAR: Hardware Assist Auto-Reset */
-static void langwell_otg_HAAR(int on)
-{
-       struct langwell_otg             *lnw = the_transceiver;
-       struct intel_mid_otg_xceiv      *iotg = &lnw->iotg;
-       u32                             val;
-
-       dev_dbg(lnw->dev, "%s ---> %s\n", __func__, on ? "on" : "off");
-
-       val = readl(iotg->base + CI_OTGSC);
-       if (on)
-               writel((val & ~OTGSC_INTSTS_MASK) | OTGSC_HAAR,
-                                       iotg->base + CI_OTGSC);
-       else
-               writel((val & ~OTGSC_INTSTS_MASK) & ~OTGSC_HAAR,
-                                       iotg->base + CI_OTGSC);
-
-       dev_dbg(lnw->dev, "%s <---\n", __func__);
-}
-
-/* set HABA: Hardware Assist B-Disconnect to A-Connect */
-static void langwell_otg_HABA(int on)
-{
-       struct langwell_otg             *lnw = the_transceiver;
-       struct intel_mid_otg_xceiv      *iotg = &lnw->iotg;
-       u32                             val;
-
-       dev_dbg(lnw->dev, "%s ---> %s\n", __func__, on ? "on" : "off");
-
-       val = readl(iotg->base + CI_OTGSC);
-       if (on)
-               writel((val & ~OTGSC_INTSTS_MASK) | OTGSC_HABA,
-                                       iotg->base + CI_OTGSC);
-       else
-               writel((val & ~OTGSC_INTSTS_MASK) & ~OTGSC_HABA,
-                                       iotg->base + CI_OTGSC);
-
-       dev_dbg(lnw->dev, "%s <---\n", __func__);
-}
-
-static int langwell_otg_check_se0_srp(int on)
-{
-       struct langwell_otg     *lnw = the_transceiver;
-       int                     delay_time = TB_SE0_SRP * 10;
-       u32                     val;
-
-       dev_dbg(lnw->dev, "%s --->\n", __func__);
-
-       do {
-               udelay(100);
-               if (!delay_time--)
-                       break;
-               val = readl(lnw->iotg.base + CI_PORTSC1);
-               val &= PORTSC_LS;
-       } while (!val);
-
-       dev_dbg(lnw->dev, "%s <---\n", __func__);
-       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)
-{
-       struct langwell_otg     *lnw = the_transceiver;
-
-       switch (indicator) {
-       case 2:
-       case 4:
-       case 6:
-       case 7:
-               dev_warn(lnw->dev,
-                       "OTG:NSF-%lu - deivce not responding\n", indicator);
-               break;
-       case 3:
-               dev_warn(lnw->dev,
-                       "OTG:NSF-%lu - deivce not supported\n", indicator);
-               break;
-       default:
-               dev_warn(lnw->dev, "Do not have this kind of NSF\n");
-               break;
-       }
-}
-
-/* Initialize timers */
-static int 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);
-       if (a_wait_vrise_tmr == NULL)
-               return -ENOMEM;
-       a_aidl_bdis_tmr = otg_timer_initializer(&set_tmout, TA_AIDL_BDIS,
-                               (unsigned long)&hsm->a_aidl_bdis_tmout);
-       if (a_aidl_bdis_tmr == NULL)
-               return -ENOMEM;
-       b_se0_srp_tmr = otg_timer_initializer(&set_tmout, TB_SE0_SRP,
-                               (unsigned long)&hsm->b_se0_srp);
-       if (b_se0_srp_tmr == NULL)
-               return -ENOMEM;
-       b_srp_init_tmr = otg_timer_initializer(&set_tmout, TB_SRP_INIT,
-                               (unsigned long)&hsm->b_srp_init_tmout);
-       if (b_srp_init_tmr == NULL)
-               return -ENOMEM;
-
-       return 0;
-}
-
-/* Free timers */
-static void langwell_otg_free_timers(void)
-{
-       kfree(a_wait_vrise_tmr);
-       kfree(a_aidl_bdis_tmr);
-       kfree(b_se0_srp_tmr);
-       kfree(b_srp_init_tmr);
-}
-
-/* The timeout callback function to set time out bit */
-static void langwell_otg_timer_fn(unsigned long indicator)
-{
-       struct langwell_otg *lnw = the_transceiver;
-
-       *(int *)indicator = 1;
-
-       dev_dbg(lnw->dev, "kernel timer - timeout\n");
-
-       langwell_update_transceiver();
-}
-
-/* kernel timer used instead of HW based interrupt */
-static void langwell_otg_add_ktimer(enum langwell_otg_timer_type timers)
-{
-       struct langwell_otg             *lnw = the_transceiver;
-       struct intel_mid_otg_xceiv      *iotg = &lnw->iotg;
-       unsigned long           j = jiffies;
-       unsigned long           data, time;
-
-       switch (timers) {
-       case TA_WAIT_VRISE_TMR:
-               iotg->hsm.a_wait_vrise_tmout = 0;
-               data = (unsigned long)&iotg->hsm.a_wait_vrise_tmout;
-               time = TA_WAIT_VRISE;
-               break;
-       case TA_WAIT_BCON_TMR:
-               iotg->hsm.a_wait_bcon_tmout = 0;
-               data = (unsigned long)&iotg->hsm.a_wait_bcon_tmout;
-               time = TA_WAIT_BCON;
-               break;
-       case TA_AIDL_BDIS_TMR:
-               iotg->hsm.a_aidl_bdis_tmout = 0;
-               data = (unsigned long)&iotg->hsm.a_aidl_bdis_tmout;
-               time = TA_AIDL_BDIS;
-               break;
-       case TB_ASE0_BRST_TMR:
-               iotg->hsm.b_ase0_brst_tmout = 0;
-               data = (unsigned long)&iotg->hsm.b_ase0_brst_tmout;
-               time = TB_ASE0_BRST;
-               break;
-       case TB_SRP_INIT_TMR:
-               iotg->hsm.b_srp_init_tmout = 0;
-               data = (unsigned long)&iotg->hsm.b_srp_init_tmout;
-               time = TB_SRP_INIT;
-               break;
-       case TB_SRP_FAIL_TMR:
-               iotg->hsm.b_srp_fail_tmout = 0;
-               data = (unsigned long)&iotg->hsm.b_srp_fail_tmout;
-               time = TB_SRP_FAIL;
-               break;
-       case TB_BUS_SUSPEND_TMR:
-               iotg->hsm.b_bus_suspend_tmout = 0;
-               data = (unsigned long)&iotg->hsm.b_bus_suspend_tmout;
-               time = TB_BUS_SUSPEND;
-               break;
-       default:
-               dev_dbg(lnw->dev, "unknown timer, cannot enable it\n");
-               return;
-       }
-
-       lnw->hsm_timer.data = data;
-       lnw->hsm_timer.function = langwell_otg_timer_fn;
-       lnw->hsm_timer.expires = j + time * HZ / 1000; /* milliseconds */
-
-       add_timer(&lnw->hsm_timer);
-
-       dev_dbg(lnw->dev, "add timer successfully\n");
-}
-
-/* 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;
-       struct intel_mid_otg_xceiv *iotg = &the_transceiver->iotg;
-       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(iotg->base + CI_OTGSC);
-               writel(val32 | OTGSC_1MSE, iotg->base + 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 *lnw = the_transceiver;
-       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(lnw->iotg.base + CI_OTGSC);
-               writel(val32 & ~OTGSC_1MSE, lnw->iotg.base + CI_OTGSC);
-       }
-}
-
-/* Reduce timer count by 1, and find timeout conditions.*/
-static int langwell_otg_tick_timer(u32 *int_sts)
-{
-       struct langwell_otg     *lnw = the_transceiver;
-       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)) {
-               dev_dbg(lnw->dev, "tick timer: disable 1ms int\n");
-               *int_sts = *int_sts & ~OTGSC_1MSE;
-       }
-       return expired;
-}
-
-static void reset_otg(void)
-{
-       struct langwell_otg     *lnw = the_transceiver;
-       int                     delay_time = 1000;
-       u32                     val;
-
-       dev_dbg(lnw->dev, "reseting OTG controller ...\n");
-       val = readl(lnw->iotg.base + CI_USBCMD);
-       writel(val | USBCMD_RST, lnw->iotg.base + CI_USBCMD);
-       do {
-               udelay(100);
-               if (!delay_time--)
-                       dev_dbg(lnw->dev, "reset timeout\n");
-               val = readl(lnw->iotg.base + CI_USBCMD);
-               val &= USBCMD_RST;
-       } while (val != 0);
-       dev_dbg(lnw->dev, "reset done.\n");
-}
-
-static void set_host_mode(void)
-{
-       struct langwell_otg     *lnw = the_transceiver;
-       u32                     val;
-
-       reset_otg();
-       val = readl(lnw->iotg.base + CI_USBMODE);
-       val = (val & (~USBMODE_CM)) | USBMODE_HOST;
-       writel(val, lnw->iotg.base + CI_USBMODE);
-}
-
-static void set_client_mode(void)
-{
-       struct langwell_otg     *lnw = the_transceiver;
-       u32                     val;
-
-       reset_otg();
-       val = readl(lnw->iotg.base + CI_USBMODE);
-       val = (val & (~USBMODE_CM)) | USBMODE_DEVICE;
-       writel(val, lnw->iotg.base + CI_USBMODE);
-}
-
-static void init_hsm(void)
-{
-       struct langwell_otg             *lnw = the_transceiver;
-       struct intel_mid_otg_xceiv      *iotg = &lnw->iotg;
-       u32                             val32;
-
-       /* read OTGSC after reset */
-       val32 = readl(lnw->iotg.base + CI_OTGSC);
-       dev_dbg(lnw->dev, "%s: OTGSC init value = 0x%x\n", __func__, val32);
-
-       /* set init state */
-       if (val32 & OTGSC_ID) {
-               iotg->hsm.id = 1;
-               iotg->otg.default_a = 0;
-               set_client_mode();
-               iotg->otg.state = OTG_STATE_B_IDLE;
-       } else {
-               iotg->hsm.id = 0;
-               iotg->otg.default_a = 1;
-               set_host_mode();
-               iotg->otg.state = OTG_STATE_A_IDLE;
-       }
-
-       /* set session indicator */
-       if (val32 & OTGSC_BSE)
-               iotg->hsm.b_sess_end = 1;
-       if (val32 & OTGSC_BSV)
-               iotg->hsm.b_sess_vld = 1;
-       if (val32 & OTGSC_ASV)
-               iotg->hsm.a_sess_vld = 1;
-       if (val32 & OTGSC_AVV)
-               iotg->hsm.a_vbus_vld = 1;
-
-       /* defautly power the bus */
-       iotg->hsm.a_bus_req = 1;
-       iotg->hsm.a_bus_drop = 0;
-       /* defautly don't request bus as B device */
-       iotg->hsm.b_bus_req = 0;
-       /* no system error */
-       iotg->hsm.a_clr_err = 0;
-
-       langwell_otg_phy_low_power_wait(1);
-}
-
-static void update_hsm(void)
-{
-       struct langwell_otg             *lnw = the_transceiver;
-       struct intel_mid_otg_xceiv      *iotg = &lnw->iotg;
-       u32                             val32;
-
-       /* read OTGSC */
-       val32 = readl(lnw->iotg.base + CI_OTGSC);
-       dev_dbg(lnw->dev, "%s: OTGSC value = 0x%x\n", __func__, val32);
-
-       iotg->hsm.id = !!(val32 & OTGSC_ID);
-       iotg->hsm.b_sess_end = !!(val32 & OTGSC_BSE);
-       iotg->hsm.b_sess_vld = !!(val32 & OTGSC_BSV);
-       iotg->hsm.a_sess_vld = !!(val32 & OTGSC_ASV);
-       iotg->hsm.a_vbus_vld = !!(val32 & OTGSC_AVV);
-}
-
-static irqreturn_t otg_dummy_irq(int irq, void *_dev)
-{
-       struct langwell_otg     *lnw = the_transceiver;
-       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 (lnw->iotg.hsm.b_conn) {
-               lnw->iotg.hsm.b_conn = 0;
-               if (spin_trylock(&lnw->wq_lock)) {
-                       langwell_update_transceiver();
-                       spin_unlock(&lnw->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             *lnw = _dev;
-       struct intel_mid_otg_xceiv      *iotg = &lnw->iotg;
-       u32                             int_sts, int_en;
-       u32                             int_mask = 0;
-       int                             flag = 0;
-
-       int_sts = readl(lnw->iotg.base + 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) {
-               dev_dbg(lnw->dev, "%s: id change int\n", __func__);
-               iotg->hsm.id = (int_sts & OTGSC_ID) ? 1 : 0;
-               dev_dbg(lnw->dev, "id = %d\n", iotg->hsm.id);
-               flag = 1;
-       }
-       if (int_mask & OTGSC_DPIS) {
-               dev_dbg(lnw->dev, "%s: data pulse int\n", __func__);
-               iotg->hsm.a_srp_det = (int_sts & OTGSC_DPS) ? 1 : 0;
-               dev_dbg(lnw->dev, "data pulse = %d\n", iotg->hsm.a_srp_det);
-               flag = 1;
-       }
-       if (int_mask & OTGSC_BSEIS) {
-               dev_dbg(lnw->dev, "%s: b session end int\n", __func__);
-               iotg->hsm.b_sess_end = (int_sts & OTGSC_BSE) ? 1 : 0;
-               dev_dbg(lnw->dev, "b_sess_end = %d\n", iotg->hsm.b_sess_end);
-               flag = 1;
-       }
-       if (int_mask & OTGSC_BSVIS) {
-               dev_dbg(lnw->dev, "%s: b session valid int\n", __func__);
-               iotg->hsm.b_sess_vld = (int_sts & OTGSC_BSV) ? 1 : 0;
-               dev_dbg(lnw->dev, "b_sess_vld = %d\n", iotg->hsm.b_sess_end);
-               flag = 1;
-       }
-       if (int_mask & OTGSC_ASVIS) {
-               dev_dbg(lnw->dev, "%s: a session valid int\n", __func__);
-               iotg->hsm.a_sess_vld = (int_sts & OTGSC_ASV) ? 1 : 0;
-               dev_dbg(lnw->dev, "a_sess_vld = %d\n", iotg->hsm.a_sess_vld);
-               flag = 1;
-       }
-       if (int_mask & OTGSC_AVVIS) {
-               dev_dbg(lnw->dev, "%s: a vbus valid int\n", __func__);
-               iotg->hsm.a_vbus_vld = (int_sts & OTGSC_AVV) ? 1 : 0;
-               dev_dbg(lnw->dev, "a_vbus_vld = %d\n", iotg->hsm.a_vbus_vld);
-               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,
-                                       lnw->iotg.base + CI_OTGSC);
-       if (flag)
-               langwell_update_transceiver();
-
-       return IRQ_HANDLED;
-}
-
-static int langwell_otg_iotg_notify(struct notifier_block *nb,
-                               unsigned long action, void *data)
-{
-       struct langwell_otg             *lnw = the_transceiver;
-       struct intel_mid_otg_xceiv      *iotg = data;
-       int                             flag = 0;
-
-       if (iotg == NULL)
-               return NOTIFY_BAD;
-
-       if (lnw == NULL)
-               return NOTIFY_BAD;
-
-       switch (action) {
-       case MID_OTG_NOTIFY_CONNECT:
-               dev_dbg(lnw->dev, "Lnw OTG Notify Connect Event\n");
-               if (iotg->otg.default_a == 1)
-                       iotg->hsm.b_conn = 1;
-               else
-                       iotg->hsm.a_conn = 1;
-               flag = 1;
-               break;
-       case MID_OTG_NOTIFY_DISCONN:
-               dev_dbg(lnw->dev, "Lnw OTG Notify Disconnect Event\n");
-               if (iotg->otg.default_a == 1)
-                       iotg->hsm.b_conn = 0;
-               else
-                       iotg->hsm.a_conn = 0;
-               flag = 1;
-               break;
-       case MID_OTG_NOTIFY_HSUSPEND:
-               dev_dbg(lnw->dev, "Lnw OTG Notify Host Bus suspend Event\n");
-               if (iotg->otg.default_a == 1)
-                       iotg->hsm.a_suspend_req = 1;
-               else
-                       iotg->hsm.b_bus_req = 0;
-               flag = 1;
-               break;
-       case MID_OTG_NOTIFY_HRESUME:
-               dev_dbg(lnw->dev, "Lnw OTG Notify Host Bus resume Event\n");
-               if (iotg->otg.default_a == 1)
-                       iotg->hsm.b_bus_resume = 1;
-               flag = 1;
-               break;
-       case MID_OTG_NOTIFY_CSUSPEND:
-               dev_dbg(lnw->dev, "Lnw OTG Notify Client Bus suspend Event\n");
-               if (iotg->otg.default_a == 1) {
-                       if (iotg->hsm.b_bus_suspend_vld == 2) {
-                               iotg->hsm.b_bus_suspend = 1;
-                               iotg->hsm.b_bus_suspend_vld = 0;
-                               flag = 1;
-                       } else {
-                               iotg->hsm.b_bus_suspend_vld++;
-                               flag = 0;
-                       }
-               } else {
-                       if (iotg->hsm.a_bus_suspend == 0) {
-                               iotg->hsm.a_bus_suspend = 1;
-                               flag = 1;
-                       }
-               }
-               break;
-       case MID_OTG_NOTIFY_CRESUME:
-               dev_dbg(lnw->dev, "Lnw OTG Notify Client Bus resume Event\n");
-               if (iotg->otg.default_a == 0)
-                       iotg->hsm.a_bus_suspend = 0;
-               flag = 0;
-               break;
-       case MID_OTG_NOTIFY_HOSTADD:
-               dev_dbg(lnw->dev, "Lnw OTG Nofity Host Driver Add\n");
-               flag = 1;
-               break;
-       case MID_OTG_NOTIFY_HOSTREMOVE:
-               dev_dbg(lnw->dev, "Lnw OTG Nofity Host Driver remove\n");
-               flag = 1;
-               break;
-       case MID_OTG_NOTIFY_CLIENTADD:
-               dev_dbg(lnw->dev, "Lnw OTG Nofity Client Driver Add\n");
-               flag = 1;
-               break;
-       case MID_OTG_NOTIFY_CLIENTREMOVE:
-               dev_dbg(lnw->dev, "Lnw OTG Nofity Client Driver remove\n");
-               flag = 1;
-               break;
-       default:
-               dev_dbg(lnw->dev, "Lnw OTG Nofity unknown notify message\n");
-               return NOTIFY_DONE;
-       }
-
-       if (flag)
-               langwell_update_transceiver();
-
-       return NOTIFY_OK;
-}
-
-static void langwell_otg_work(struct work_struct *work)
-{
-       struct langwell_otg             *lnw;
-       struct intel_mid_otg_xceiv      *iotg;
-       int                             retval;
-       struct pci_dev                  *pdev;
-
-       lnw = container_of(work, struct langwell_otg, work);
-       iotg = &lnw->iotg;
-       pdev = to_pci_dev(lnw->dev);
-
-       dev_dbg(lnw->dev, "%s: old state = %s\n", __func__,
-                       otg_state_string(iotg->otg.state));
-
-       switch (iotg->otg.state) {
-       case OTG_STATE_UNDEFINED:
-       case OTG_STATE_B_IDLE:
-               if (!iotg->hsm.id) {
-                       langwell_otg_del_timer(b_srp_init_tmr);
-                       del_timer_sync(&lnw->hsm_timer);
-
-                       iotg->otg.default_a = 1;
-                       iotg->hsm.a_srp_det = 0;
-
-                       langwell_otg_chrg_vbus(0);
-                       set_host_mode();
-                       langwell_otg_phy_low_power(1);
-
-                       iotg->otg.state = OTG_STATE_A_IDLE;
-                       langwell_update_transceiver();
-               } else if (iotg->hsm.b_sess_vld) {
-                       langwell_otg_del_timer(b_srp_init_tmr);
-                       del_timer_sync(&lnw->hsm_timer);
-                       iotg->hsm.b_sess_end = 0;
-                       iotg->hsm.a_bus_suspend = 0;
-                       langwell_otg_chrg_vbus(0);
-
-                       if (lnw->iotg.start_peripheral) {
-                               lnw->iotg.start_peripheral(&lnw->iotg);
-                               iotg->otg.state = OTG_STATE_B_PERIPHERAL;
-                       } else
-                               dev_dbg(lnw->dev, "client driver not loaded\n");
-
-               } else if (iotg->hsm.b_srp_init_tmout) {
-                       iotg->hsm.b_srp_init_tmout = 0;
-                       dev_warn(lnw->dev, "SRP init timeout\n");
-               } else if (iotg->hsm.b_srp_fail_tmout) {
-                       iotg->hsm.b_srp_fail_tmout = 0;
-                       iotg->hsm.b_bus_req = 0;
-
-                       /* No silence failure */
-                       langwell_otg_nsf_msg(6);
-               } else if (iotg->hsm.b_bus_req && iotg->hsm.b_sess_end) {
-                       del_timer_sync(&lnw->hsm_timer);
-                       /* workaround for b_se0_srp detection */
-                       retval = langwell_otg_check_se0_srp(0);
-                       if (retval) {
-                               iotg->hsm.b_bus_req = 0;
-                               dev_dbg(lnw->dev, "LS isn't SE0, try later\n");
-                       } else {
-                               /* clear the PHCD before start srp */
-                               langwell_otg_phy_low_power(0);
-
-                               /* Start SRP */
-                               langwell_otg_add_timer(b_srp_init_tmr);
-                               iotg->otg.start_srp(&iotg->otg);
-                               langwell_otg_del_timer(b_srp_init_tmr);
-                               langwell_otg_add_ktimer(TB_SRP_FAIL_TMR);
-
-                               /* reset PHY low power mode here */
-                               langwell_otg_phy_low_power_wait(1);
-                       }
-               }
-               break;
-       case OTG_STATE_B_SRP_INIT:
-               if (!iotg->hsm.id) {
-                       iotg->otg.default_a = 1;
-                       iotg->hsm.a_srp_det = 0;
-
-                       /* Turn off VBus */
-                       iotg->otg.set_vbus(&iotg->otg, false);
-                       langwell_otg_chrg_vbus(0);
-                       set_host_mode();
-                       langwell_otg_phy_low_power(1);
-                       iotg->otg.state = OTG_STATE_A_IDLE;
-                       langwell_update_transceiver();
-               } else if (iotg->hsm.b_sess_vld) {
-                       langwell_otg_chrg_vbus(0);
-                       if (lnw->iotg.start_peripheral) {
-                               lnw->iotg.start_peripheral(&lnw->iotg);
-                               iotg->otg.state = OTG_STATE_B_PERIPHERAL;
-                       } else
-                               dev_dbg(lnw->dev, "client driver not loaded\n");
-               }
-               break;
-       case OTG_STATE_B_PERIPHERAL:
-               if (!iotg->hsm.id) {
-                       iotg->otg.default_a = 1;
-                       iotg->hsm.a_srp_det = 0;
-
-                       langwell_otg_chrg_vbus(0);
-
-                       if (lnw->iotg.stop_peripheral)
-                               lnw->iotg.stop_peripheral(&lnw->iotg);
-                       else
-                               dev_dbg(lnw->dev,
-                                       "client driver has been removed.\n");
-
-                       set_host_mode();
-                       langwell_otg_phy_low_power(1);
-                       iotg->otg.state = OTG_STATE_A_IDLE;
-                       langwell_update_transceiver();
-               } else if (!iotg->hsm.b_sess_vld) {
-                       iotg->hsm.b_hnp_enable = 0;
-
-                       if (lnw->iotg.stop_peripheral)
-                               lnw->iotg.stop_peripheral(&lnw->iotg);
-                       else
-                               dev_dbg(lnw->dev,
-                                       "client driver has been removed.\n");
-
-                       iotg->otg.state = OTG_STATE_B_IDLE;
-               } else if (iotg->hsm.b_bus_req && iotg->otg.gadget &&
-                                       iotg->otg.gadget->b_hnp_enable &&
-                                       iotg->hsm.a_bus_suspend) {
-
-                       if (lnw->iotg.stop_peripheral)
-                               lnw->iotg.stop_peripheral(&lnw->iotg);
-                       else
-                               dev_dbg(lnw->dev,
-                                       "client driver has been removed.\n");
-
-                       langwell_otg_HAAR(1);
-                       iotg->hsm.a_conn = 0;
-
-                       if (lnw->iotg.start_host) {
-                               lnw->iotg.start_host(&lnw->iotg);
-                               iotg->otg.state = OTG_STATE_B_WAIT_ACON;
-                       } else
-                               dev_dbg(lnw->dev,
-                                               "host driver not loaded.\n");
-
-                       iotg->hsm.a_bus_resume = 0;
-                       langwell_otg_add_ktimer(TB_ASE0_BRST_TMR);
-               }
-               break;
-
-       case OTG_STATE_B_WAIT_ACON:
-               if (!iotg->hsm.id) {
-                       /* delete hsm timer for b_ase0_brst_tmr */
-                       del_timer_sync(&lnw->hsm_timer);
-
-                       iotg->otg.default_a = 1;
-                       iotg->hsm.a_srp_det = 0;
-
-                       langwell_otg_chrg_vbus(0);
-
-                       langwell_otg_HAAR(0);
-                       if (lnw->iotg.stop_host)
-                               lnw->iotg.stop_host(&lnw->iotg);
-                       else
-                               dev_dbg(lnw->dev,
-                                       "host driver has been removed.\n");
-
-                       set_host_mode();
-                       langwell_otg_phy_low_power(1);
-                       iotg->otg.state = OTG_STATE_A_IDLE;
-                       langwell_update_transceiver();
-               } else if (!iotg->hsm.b_sess_vld) {
-                       /* delete hsm timer for b_ase0_brst_tmr */
-                       del_timer_sync(&lnw->hsm_timer);
-
-                       iotg->hsm.b_hnp_enable = 0;
-                       iotg->hsm.b_bus_req = 0;
-
-                       langwell_otg_chrg_vbus(0);
-                       langwell_otg_HAAR(0);
-
-                       if (lnw->iotg.stop_host)
-                               lnw->iotg.stop_host(&lnw->iotg);
-                       else
-                               dev_dbg(lnw->dev,
-                                       "host driver has been removed.\n");
-
-                       set_client_mode();
-                       langwell_otg_phy_low_power(1);
-                       iotg->otg.state = OTG_STATE_B_IDLE;
-               } else if (iotg->hsm.a_conn) {
-                       /* delete hsm timer for b_ase0_brst_tmr */
-                       del_timer_sync(&lnw->hsm_timer);
-
-                       langwell_otg_HAAR(0);
-                       iotg->otg.state = OTG_STATE_B_HOST;
-                       langwell_update_transceiver();
-               } else if (iotg->hsm.a_bus_resume ||
-                               iotg->hsm.b_ase0_brst_tmout) {
-                       /* delete hsm timer for b_ase0_brst_tmr */
-                       del_timer_sync(&lnw->hsm_timer);
-
-                       langwell_otg_HAAR(0);
-                       langwell_otg_nsf_msg(7);
-
-                       if (lnw->iotg.stop_host)
-                               lnw->iotg.stop_host(&lnw->iotg);
-                       else
-                               dev_dbg(lnw->dev,
-                                       "host driver has been removed.\n");
-
-                       iotg->hsm.a_bus_suspend = 0;
-                       iotg->hsm.b_bus_req = 0;
-
-                       if (lnw->iotg.start_peripheral)
-                               lnw->iotg.start_peripheral(&lnw->iotg);
-                       else
-                               dev_dbg(lnw->dev,
-                                       "client driver not loaded.\n");
-
-                       iotg->otg.state = OTG_STATE_B_PERIPHERAL;
-               }
-               break;
-
-       case OTG_STATE_B_HOST:
-               if (!iotg->hsm.id) {
-                       iotg->otg.default_a = 1;
-                       iotg->hsm.a_srp_det = 0;
-
-                       langwell_otg_chrg_vbus(0);
-
-                       if (lnw->iotg.stop_host)
-                               lnw->iotg.stop_host(&lnw->iotg);
-                       else
-                               dev_dbg(lnw->dev,
-                                       "host driver has been removed.\n");
-
-                       set_host_mode();
-                       langwell_otg_phy_low_power(1);
-                       iotg->otg.state = OTG_STATE_A_IDLE;
-                       langwell_update_transceiver();
-               } else if (!iotg->hsm.b_sess_vld) {
-                       iotg->hsm.b_hnp_enable = 0;
-                       iotg->hsm.b_bus_req = 0;
-
-                       langwell_otg_chrg_vbus(0);
-                       if (lnw->iotg.stop_host)
-                               lnw->iotg.stop_host(&lnw->iotg);
-                       else
-                               dev_dbg(lnw->dev,
-                                       "host driver has been removed.\n");
-
-                       set_client_mode();
-                       langwell_otg_phy_low_power(1);
-                       iotg->otg.state = OTG_STATE_B_IDLE;
-               } else if ((!iotg->hsm.b_bus_req) ||
-                               (!iotg->hsm.a_conn)) {
-                       iotg->hsm.b_bus_req = 0;
-                       langwell_otg_loc_sof(0);
-
-                       if (lnw->iotg.stop_host)
-                               lnw->iotg.stop_host(&lnw->iotg);
-                       else
-                               dev_dbg(lnw->dev,
-                                       "host driver has been removed.\n");
-
-                       iotg->hsm.a_bus_suspend = 0;
-
-                       if (lnw->iotg.start_peripheral)
-                               lnw->iotg.start_peripheral(&lnw->iotg);
-                       else
-                               dev_dbg(lnw->dev,
-                                               "client driver not loaded.\n");
-
-                       iotg->otg.state = OTG_STATE_B_PERIPHERAL;
-               }
-               break;
-
-       case OTG_STATE_A_IDLE:
-               iotg->otg.default_a = 1;
-               if (iotg->hsm.id) {
-                       iotg->otg.default_a = 0;
-                       iotg->hsm.b_bus_req = 0;
-                       iotg->hsm.vbus_srp_up = 0;
-
-                       langwell_otg_chrg_vbus(0);
-                       set_client_mode();
-                       langwell_otg_phy_low_power(1);
-                       iotg->otg.state = OTG_STATE_B_IDLE;
-                       langwell_update_transceiver();
-               } else if (!iotg->hsm.a_bus_drop &&
-                       (iotg->hsm.a_srp_det || iotg->hsm.a_bus_req)) {
-                       langwell_otg_phy_low_power(0);
-
-                       /* Turn on VBus */
-                       iotg->otg.set_vbus(&iotg->otg, true);
-
-                       iotg->hsm.vbus_srp_up = 0;
-                       iotg->hsm.a_wait_vrise_tmout = 0;
-                       langwell_otg_add_timer(a_wait_vrise_tmr);
-                       iotg->otg.state = OTG_STATE_A_WAIT_VRISE;
-                       langwell_update_transceiver();
-               } else if (!iotg->hsm.a_bus_drop && iotg->hsm.a_sess_vld) {
-                       iotg->hsm.vbus_srp_up = 1;
-               } else if (!iotg->hsm.a_sess_vld && iotg->hsm.vbus_srp_up) {
-                       msleep(10);
-                       langwell_otg_phy_low_power(0);
-
-                       /* Turn on VBus */
-                       iotg->otg.set_vbus(&iotg->otg, true);
-                       iotg->hsm.a_srp_det = 1;
-                       iotg->hsm.vbus_srp_up = 0;
-                       iotg->hsm.a_wait_vrise_tmout = 0;
-                       langwell_otg_add_timer(a_wait_vrise_tmr);
-                       iotg->otg.state = OTG_STATE_A_WAIT_VRISE;
-                       langwell_update_transceiver();
-               } else if (!iotg->hsm.a_sess_vld &&
-                               !iotg->hsm.vbus_srp_up) {
-                       langwell_otg_phy_low_power(1);
-               }
-               break;
-       case OTG_STATE_A_WAIT_VRISE:
-               if (iotg->hsm.id) {
-                       langwell_otg_del_timer(a_wait_vrise_tmr);
-                       iotg->hsm.b_bus_req = 0;
-                       iotg->otg.default_a = 0;
-
-                       /* Turn off VBus */
-                       iotg->otg.set_vbus(&iotg->otg, false);
-                       set_client_mode();
-                       langwell_otg_phy_low_power_wait(1);
-                       iotg->otg.state = OTG_STATE_B_IDLE;
-               } else if (iotg->hsm.a_vbus_vld) {
-                       langwell_otg_del_timer(a_wait_vrise_tmr);
-                       iotg->hsm.b_conn = 0;
-                       if (lnw->iotg.start_host)
-                               lnw->iotg.start_host(&lnw->iotg);
-                       else {
-                               dev_dbg(lnw->dev, "host driver not loaded.\n");
-                               break;
-                       }
-
-                       langwell_otg_add_ktimer(TA_WAIT_BCON_TMR);
-                       iotg->otg.state = OTG_STATE_A_WAIT_BCON;
-               } else if (iotg->hsm.a_wait_vrise_tmout) {
-                       iotg->hsm.b_conn = 0;
-                       if (iotg->hsm.a_vbus_vld) {
-                               if (lnw->iotg.start_host)
-                                       lnw->iotg.start_host(&lnw->iotg);
-                               else {
-                                       dev_dbg(lnw->dev,
-                                               "host driver not loaded.\n");
-                                       break;
-                               }
-                               langwell_otg_add_ktimer(TA_WAIT_BCON_TMR);
-                               iotg->otg.state = OTG_STATE_A_WAIT_BCON;
-                       } else {
-
-                               /* Turn off VBus */
-                               iotg->otg.set_vbus(&iotg->otg, false);
-                               langwell_otg_phy_low_power_wait(1);
-                               iotg->otg.state = OTG_STATE_A_VBUS_ERR;
-                       }
-               }
-               break;
-       case OTG_STATE_A_WAIT_BCON:
-               if (iotg->hsm.id) {
-                       /* delete hsm timer for a_wait_bcon_tmr */
-                       del_timer_sync(&lnw->hsm_timer);
-
-                       iotg->otg.default_a = 0;
-                       iotg->hsm.b_bus_req = 0;
-
-                       if (lnw->iotg.stop_host)
-                               lnw->iotg.stop_host(&lnw->iotg);
-                       else
-                               dev_dbg(lnw->dev,
-                                       "host driver has been removed.\n");
-
-                       /* Turn off VBus */
-                       iotg->otg.set_vbus(&iotg->otg, false);
-                       set_client_mode();
-                       langwell_otg_phy_low_power_wait(1);
-                       iotg->otg.state = OTG_STATE_B_IDLE;
-                       langwell_update_transceiver();
-               } else if (!iotg->hsm.a_vbus_vld) {
-                       /* delete hsm timer for a_wait_bcon_tmr */
-                       del_timer_sync(&lnw->hsm_timer);
-
-                       if (lnw->iotg.stop_host)
-                               lnw->iotg.stop_host(&lnw->iotg);
-                       else
-                               dev_dbg(lnw->dev,
-                                       "host driver has been removed.\n");
-
-                       /* Turn off VBus */
-                       iotg->otg.set_vbus(&iotg->otg, false);
-                       langwell_otg_phy_low_power_wait(1);
-                       iotg->otg.state = OTG_STATE_A_VBUS_ERR;
-               } else if (iotg->hsm.a_bus_drop ||
-                               (iotg->hsm.a_wait_bcon_tmout &&
-                               !iotg->hsm.a_bus_req)) {
-                       /* delete hsm timer for a_wait_bcon_tmr */
-                       del_timer_sync(&lnw->hsm_timer);
-
-                       if (lnw->iotg.stop_host)
-                               lnw->iotg.stop_host(&lnw->iotg);
-                       else
-                               dev_dbg(lnw->dev,
-                                       "host driver has been removed.\n");
-
-                       /* Turn off VBus */
-                       iotg->otg.set_vbus(&iotg->otg, false);
-                       iotg->otg.state = OTG_STATE_A_WAIT_VFALL;
-               } else if (iotg->hsm.b_conn) {
-                       /* delete hsm timer for a_wait_bcon_tmr */
-                       del_timer_sync(&lnw->hsm_timer);
-
-                       iotg->hsm.a_suspend_req = 0;
-                       iotg->otg.state = OTG_STATE_A_HOST;
-                       if (iotg->hsm.a_srp_det && iotg->otg.host &&
-                                       !iotg->otg.host->b_hnp_enable) {
-                               /* SRP capable peripheral-only device */
-                               iotg->hsm.a_bus_req = 1;
-                               iotg->hsm.a_srp_det = 0;
-                       } else if (!iotg->hsm.a_bus_req && iotg->otg.host &&
-                                       iotg->otg.host->b_hnp_enable) {
-                               /* It is not safe enough to do a fast
-                                * transition from A_WAIT_BCON to
-                                * A_SUSPEND */
-                               msleep(10000);
-                               if (iotg->hsm.a_bus_req)
-                                       break;
-
-                               if (request_irq(pdev->irq,
-                                       otg_dummy_irq, IRQF_SHARED,
-                                       driver_name, iotg->base) != 0) {
-                                       dev_dbg(lnw->dev,
-                                               "request interrupt %d fail\n",
-                                               pdev->irq);
-                               }
-
-                               langwell_otg_HABA(1);
-                               iotg->hsm.b_bus_resume = 0;
-                               iotg->hsm.a_aidl_bdis_tmout = 0;
-
-                               langwell_otg_loc_sof(0);
-                               /* clear PHCD to enable HW timer */
-                               langwell_otg_phy_low_power(0);
-                               langwell_otg_add_timer(a_aidl_bdis_tmr);
-                               iotg->otg.state = OTG_STATE_A_SUSPEND;
-                       } else if (!iotg->hsm.a_bus_req && iotg->otg.host &&
-                               !iotg->otg.host->b_hnp_enable) {
-                               if (lnw->iotg.stop_host)
-                                       lnw->iotg.stop_host(&lnw->iotg);
-                               else
-                                       dev_dbg(lnw->dev,
-                                               "host driver removed.\n");
-
-                               /* Turn off VBus */
-                               iotg->otg.set_vbus(&iotg->otg, false);
-                               iotg->otg.state = OTG_STATE_A_WAIT_VFALL;
-                       }
-               }
-               break;
-       case OTG_STATE_A_HOST:
-               if (iotg->hsm.id) {
-                       iotg->otg.default_a = 0;
-                       iotg->hsm.b_bus_req = 0;
-
-                       if (lnw->iotg.stop_host)
-                               lnw->iotg.stop_host(&lnw->iotg);
-                       else
-                               dev_dbg(lnw->dev,
-                                       "host driver has been removed.\n");
-
-                       /* Turn off VBus */
-                       iotg->otg.set_vbus(&iotg->otg, false);
-                       set_client_mode();
-                       langwell_otg_phy_low_power_wait(1);
-                       iotg->otg.state = OTG_STATE_B_IDLE;
-                       langwell_update_transceiver();
-               } else if (iotg->hsm.a_bus_drop ||
-                               (iotg->otg.host &&
-                               !iotg->otg.host->b_hnp_enable &&
-                                       !iotg->hsm.a_bus_req)) {
-                       if (lnw->iotg.stop_host)
-                               lnw->iotg.stop_host(&lnw->iotg);
-                       else
-                               dev_dbg(lnw->dev,
-                                       "host driver has been removed.\n");
-
-                       /* Turn off VBus */
-                       iotg->otg.set_vbus(&iotg->otg, false);
-                       iotg->otg.state = OTG_STATE_A_WAIT_VFALL;
-               } else if (!iotg->hsm.a_vbus_vld) {
-                       if (lnw->iotg.stop_host)
-                               lnw->iotg.stop_host(&lnw->iotg);
-                       else
-                               dev_dbg(lnw->dev,
-                                       "host driver has been removed.\n");
-
-                       /* Turn off VBus */
-                       iotg->otg.set_vbus(&iotg->otg, false);
-                       langwell_otg_phy_low_power_wait(1);
-                       iotg->otg.state = OTG_STATE_A_VBUS_ERR;
-               } else if (iotg->otg.host &&
-                               iotg->otg.host->b_hnp_enable &&
-                               !iotg->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(pdev->irq, otg_dummy_irq, IRQF_SHARED,
-                                       driver_name, iotg->base) != 0) {
-                               dev_dbg(lnw->dev,
-                                       "request interrupt %d failed\n",
-                                               pdev->irq);
-                       }
-
-                       /* set HABA */
-                       langwell_otg_HABA(1);
-                       iotg->hsm.b_bus_resume = 0;
-                       iotg->hsm.a_aidl_bdis_tmout = 0;
-                       langwell_otg_loc_sof(0);
-                       /* clear PHCD to enable HW timer */
-                       langwell_otg_phy_low_power(0);
-                       langwell_otg_add_timer(a_aidl_bdis_tmr);
-                       iotg->otg.state = OTG_STATE_A_SUSPEND;
-               } else if (!iotg->hsm.b_conn || !iotg->hsm.a_bus_req) {
-                       langwell_otg_add_ktimer(TA_WAIT_BCON_TMR);
-                       iotg->otg.state = OTG_STATE_A_WAIT_BCON;
-               }
-               break;
-       case OTG_STATE_A_SUSPEND:
-               if (iotg->hsm.id) {
-                       langwell_otg_del_timer(a_aidl_bdis_tmr);
-                       langwell_otg_HABA(0);
-                       free_irq(pdev->irq, iotg->base);
-                       iotg->otg.default_a = 0;
-                       iotg->hsm.b_bus_req = 0;
-
-                       if (lnw->iotg.stop_host)
-                               lnw->iotg.stop_host(&lnw->iotg);
-                       else
-                               dev_dbg(lnw->dev,
-                                       "host driver has been removed.\n");
-
-                       /* Turn off VBus */
-                       iotg->otg.set_vbus(&iotg->otg, false);
-                       set_client_mode();
-                       langwell_otg_phy_low_power(1);
-                       iotg->otg.state = OTG_STATE_B_IDLE;
-                       langwell_update_transceiver();
-               } else if (iotg->hsm.a_bus_req ||
-                               iotg->hsm.b_bus_resume) {
-                       langwell_otg_del_timer(a_aidl_bdis_tmr);
-                       langwell_otg_HABA(0);
-                       free_irq(pdev->irq, iotg->base);
-                       iotg->hsm.a_suspend_req = 0;
-                       langwell_otg_loc_sof(1);
-                       iotg->otg.state = OTG_STATE_A_HOST;
-               } else if (iotg->hsm.a_aidl_bdis_tmout ||
-                               iotg->hsm.a_bus_drop) {
-                       langwell_otg_del_timer(a_aidl_bdis_tmr);
-                       langwell_otg_HABA(0);
-                       free_irq(pdev->irq, iotg->base);
-                       if (lnw->iotg.stop_host)
-                               lnw->iotg.stop_host(&lnw->iotg);
-                       else
-                               dev_dbg(lnw->dev,
-                                       "host driver has been removed.\n");
-
-                       /* Turn off VBus */
-                       iotg->otg.set_vbus(&iotg->otg, false);
-                       iotg->otg.state = OTG_STATE_A_WAIT_VFALL;
-               } else if (!iotg->hsm.b_conn && iotg->otg.host &&
-                               iotg->otg.host->b_hnp_enable) {
-                       langwell_otg_del_timer(a_aidl_bdis_tmr);
-                       langwell_otg_HABA(0);
-                       free_irq(pdev->irq, iotg->base);
-
-                       if (lnw->iotg.stop_host)
-                               lnw->iotg.stop_host(&lnw->iotg);
-                       else
-                               dev_dbg(lnw->dev,
-                                       "host driver has been removed.\n");
-
-                       iotg->hsm.b_bus_suspend = 0;
-                       iotg->hsm.b_bus_suspend_vld = 0;
-
-                       /* msleep(200); */
-                       if (lnw->iotg.start_peripheral)
-                               lnw->iotg.start_peripheral(&lnw->iotg);
-                       else
-                               dev_dbg(lnw->dev,
-                                       "client driver not loaded.\n");
-
-                       langwell_otg_add_ktimer(TB_BUS_SUSPEND_TMR);
-                       iotg->otg.state = OTG_STATE_A_PERIPHERAL;
-                       break;
-               } else if (!iotg->hsm.a_vbus_vld) {
-                       langwell_otg_del_timer(a_aidl_bdis_tmr);
-                       langwell_otg_HABA(0);
-                       free_irq(pdev->irq, iotg->base);
-                       if (lnw->iotg.stop_host)
-                               lnw->iotg.stop_host(&lnw->iotg);
-                       else
-                               dev_dbg(lnw->dev,
-                                       "host driver has been removed.\n");
-
-                       /* Turn off VBus */
-                       iotg->otg.set_vbus(&iotg->otg, false);
-                       langwell_otg_phy_low_power_wait(1);
-                       iotg->otg.state = OTG_STATE_A_VBUS_ERR;
-               }
-               break;
-       case OTG_STATE_A_PERIPHERAL:
-               if (iotg->hsm.id) {
-                       /* delete hsm timer for b_bus_suspend_tmr */
-                       del_timer_sync(&lnw->hsm_timer);
-                       iotg->otg.default_a = 0;
-                       iotg->hsm.b_bus_req = 0;
-                       if (lnw->iotg.stop_peripheral)
-                               lnw->iotg.stop_peripheral(&lnw->iotg);
-                       else
-                               dev_dbg(lnw->dev,
-                                       "client driver has been removed.\n");
-
-                       /* Turn off VBus */
-                       iotg->otg.set_vbus(&iotg->otg, false);
-                       set_client_mode();
-                       langwell_otg_phy_low_power_wait(1);
-                       iotg->otg.state = OTG_STATE_B_IDLE;
-                       langwell_update_transceiver();
-               } else if (!iotg->hsm.a_vbus_vld) {
-                       /* delete hsm timer for b_bus_suspend_tmr */
-                       del_timer_sync(&lnw->hsm_timer);
-
-                       if (lnw->iotg.stop_peripheral)
-                               lnw->iotg.stop_peripheral(&lnw->iotg);
-                       else
-                               dev_dbg(lnw->dev,
-                                       "client driver has been removed.\n");
-
-                       /* Turn off VBus */
-                       iotg->otg.set_vbus(&iotg->otg, false);
-                       langwell_otg_phy_low_power_wait(1);
-                       iotg->otg.state = OTG_STATE_A_VBUS_ERR;
-               } else if (iotg->hsm.a_bus_drop) {
-                       /* delete hsm timer for b_bus_suspend_tmr */
-                       del_timer_sync(&lnw->hsm_timer);
-
-                       if (lnw->iotg.stop_peripheral)
-                               lnw->iotg.stop_peripheral(&lnw->iotg);
-                       else
-                               dev_dbg(lnw->dev,
-                                       "client driver has been removed.\n");
-
-                       /* Turn off VBus */
-                       iotg->otg.set_vbus(&iotg->otg, false);
-                       iotg->otg.state = OTG_STATE_A_WAIT_VFALL;
-               } else if (iotg->hsm.b_bus_suspend) {
-                       /* delete hsm timer for b_bus_suspend_tmr */
-                       del_timer_sync(&lnw->hsm_timer);
-
-                       if (lnw->iotg.stop_peripheral)
-                               lnw->iotg.stop_peripheral(&lnw->iotg);
-                       else
-                               dev_dbg(lnw->dev,
-                                       "client driver has been removed.\n");
-
-                       if (lnw->iotg.start_host)
-                               lnw->iotg.start_host(&lnw->iotg);
-                       else
-                               dev_dbg(lnw->dev,
-                                               "host driver not loaded.\n");
-                       langwell_otg_add_ktimer(TA_WAIT_BCON_TMR);
-                       iotg->otg.state = OTG_STATE_A_WAIT_BCON;
-               } else if (iotg->hsm.b_bus_suspend_tmout) {
-                       u32     val;
-                       val = readl(lnw->iotg.base + CI_PORTSC1);
-                       if (!(val & PORTSC_SUSP))
-                               break;
-
-                       if (lnw->iotg.stop_peripheral)
-                               lnw->iotg.stop_peripheral(&lnw->iotg);
-                       else
-                               dev_dbg(lnw->dev,
-                                       "client driver has been removed.\n");
-
-                       if (lnw->iotg.start_host)
-                               lnw->iotg.start_host(&lnw->iotg);
-                       else
-                               dev_dbg(lnw->dev,
-                                               "host driver not loaded.\n");
-                       langwell_otg_add_ktimer(TA_WAIT_BCON_TMR);
-                       iotg->otg.state = OTG_STATE_A_WAIT_BCON;
-               }
-               break;
-       case OTG_STATE_A_VBUS_ERR:
-               if (iotg->hsm.id) {
-                       iotg->otg.default_a = 0;
-                       iotg->hsm.a_clr_err = 0;
-                       iotg->hsm.a_srp_det = 0;
-                       set_client_mode();
-                       langwell_otg_phy_low_power(1);
-                       iotg->otg.state = OTG_STATE_B_IDLE;
-                       langwell_update_transceiver();
-               } else if (iotg->hsm.a_clr_err) {
-                       iotg->hsm.a_clr_err = 0;
-                       iotg->hsm.a_srp_det = 0;
-                       reset_otg();
-                       init_hsm();
-                       if (iotg->otg.state == OTG_STATE_A_IDLE)
-                               langwell_update_transceiver();
-               } else {
-                       /* FW will clear PHCD bit when any VBus
-                        * event detected. Reset PHCD to 1 again */
-                       langwell_otg_phy_low_power(1);
-               }
-               break;
-       case OTG_STATE_A_WAIT_VFALL:
-               if (iotg->hsm.id) {
-                       iotg->otg.default_a = 0;
-                       set_client_mode();
-                       langwell_otg_phy_low_power(1);
-                       iotg->otg.state = OTG_STATE_B_IDLE;
-                       langwell_update_transceiver();
-               } else if (iotg->hsm.a_bus_req) {
-
-                       /* Turn on VBus */
-                       iotg->otg.set_vbus(&iotg->otg, true);
-                       iotg->hsm.a_wait_vrise_tmout = 0;
-                       langwell_otg_add_timer(a_wait_vrise_tmr);
-                       iotg->otg.state = OTG_STATE_A_WAIT_VRISE;
-               } else if (!iotg->hsm.a_sess_vld) {
-                       iotg->hsm.a_srp_det = 0;
-                       set_host_mode();
-                       langwell_otg_phy_low_power(1);
-                       iotg->otg.state = OTG_STATE_A_IDLE;
-               }
-               break;
-       default:
-               ;
-       }
-
-       dev_dbg(lnw->dev, "%s: new state = %s\n", __func__,
-                       otg_state_string(iotg->otg.state));
-}
-
-static ssize_t
-show_registers(struct device *_dev, struct device_attribute *attr, char *buf)
-{
-       struct langwell_otg     *lnw = the_transceiver;
-       char                    *next;
-       unsigned                size, t;
-
-       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(lnw->iotg.base + 0x30),
-               readl(lnw->iotg.base + 0x34),
-               readl(lnw->iotg.base + 0x38),
-               readl(lnw->iotg.base + 0x48),
-               readl(lnw->iotg.base + 0x74),
-               readl(lnw->iotg.base + 0xb4),
-               readl(lnw->iotg.base + 0xf4),
-               readl(lnw->iotg.base + 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             *lnw = the_transceiver;
-       struct intel_mid_otg_xceiv      *iotg = &lnw->iotg;
-       char                            *next;
-       unsigned                        size, t;
-
-       next = buf;
-       size = PAGE_SIZE;
-
-       if (iotg->otg.host)
-               iotg->hsm.a_set_b_hnp_en = iotg->otg.host->b_hnp_enable;
-
-       if (iotg->otg.gadget)
-               iotg->hsm.b_hnp_enable = iotg->otg.gadget->b_hnp_enable;
-
-       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",
-               otg_state_string(iotg->otg.state),
-               iotg->hsm.a_bus_resume,
-               iotg->hsm.a_bus_suspend,
-               iotg->hsm.a_conn,
-               iotg->hsm.a_sess_vld,
-               iotg->hsm.a_srp_det,
-               iotg->hsm.a_vbus_vld,
-               iotg->hsm.b_bus_resume,
-               iotg->hsm.b_bus_suspend,
-               iotg->hsm.b_conn,
-               iotg->hsm.b_se0_srp,
-               iotg->hsm.b_sess_end,
-               iotg->hsm.b_sess_vld,
-               iotg->hsm.id,
-               iotg->hsm.a_set_b_hnp_en,
-               iotg->hsm.b_srp_done,
-               iotg->hsm.b_hnp_enable,
-               iotg->hsm.a_wait_vrise_tmout,
-               iotg->hsm.a_wait_bcon_tmout,
-               iotg->hsm.a_aidl_bdis_tmout,
-               iotg->hsm.b_ase0_brst_tmout,
-               iotg->hsm.a_bus_drop,
-               iotg->hsm.a_bus_req,
-               iotg->hsm.a_clr_err,
-               iotg->hsm.a_suspend_req,
-               iotg->hsm.b_bus_req,
-               iotg->hsm.b_bus_suspend_tmout,
-               iotg->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     *lnw = the_transceiver;
-       char                    *next;
-       unsigned                size, t;
-
-       next = buf;
-       size = PAGE_SIZE;
-
-       t = scnprintf(next, size, "%d", lnw->iotg.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             *lnw = the_transceiver;
-       struct intel_mid_otg_xceiv      *iotg = &lnw->iotg;
-
-       if (!iotg->otg.default_a)
-               return -1;
-       if (count > 2)
-               return -1;
-
-       if (buf[0] == '0') {
-               iotg->hsm.a_bus_req = 0;
-               dev_dbg(lnw->dev, "User request: a_bus_req = 0\n");
-       } else if (buf[0] == '1') {
-               /* If a_bus_drop is TRUE, a_bus_req can't be set */
-               if (iotg->hsm.a_bus_drop)
-                       return -1;
-               iotg->hsm.a_bus_req = 1;
-               dev_dbg(lnw->dev, "User request: a_bus_req = 1\n");
-       }
-       if (spin_trylock(&lnw->wq_lock)) {
-               langwell_update_transceiver();
-               spin_unlock(&lnw->wq_lock);
-       }
-       return count;
-}
-static DEVICE_ATTR(a_bus_req, S_IRUGO | S_IWUSR, 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     *lnw = the_transceiver;
-       char                    *next;
-       unsigned                size, t;
-
-       next = buf;
-       size = PAGE_SIZE;
-
-       t = scnprintf(next, size, "%d", lnw->iotg.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             *lnw = the_transceiver;
-       struct intel_mid_otg_xceiv      *iotg = &lnw->iotg;
-
-       if (!iotg->otg.default_a)
-               return -1;
-       if (count > 2)
-               return -1;
-
-       if (buf[0] == '0') {
-               iotg->hsm.a_bus_drop = 0;
-               dev_dbg(lnw->dev, "User request: a_bus_drop = 0\n");
-       } else if (buf[0] == '1') {
-               iotg->hsm.a_bus_drop = 1;
-               iotg->hsm.a_bus_req = 0;
-               dev_dbg(lnw->dev, "User request: a_bus_drop = 1\n");
-               dev_dbg(lnw->dev, "User request: and a_bus_req = 0\n");
-       }
-       if (spin_trylock(&lnw->wq_lock)) {
-               langwell_update_transceiver();
-               spin_unlock(&lnw->wq_lock);
-       }
-       return count;
-}
-static DEVICE_ATTR(a_bus_drop, S_IRUGO | S_IWUSR, 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     *lnw = the_transceiver;
-       char                    *next;
-       unsigned                size, t;
-
-       next = buf;
-       size = PAGE_SIZE;
-
-       t = scnprintf(next, size, "%d", lnw->iotg.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             *lnw = the_transceiver;
-       struct intel_mid_otg_xceiv      *iotg = &lnw->iotg;
-
-       if (iotg->otg.default_a)
-               return -1;
-
-       if (count > 2)
-               return -1;
-
-       if (buf[0] == '0') {
-               iotg->hsm.b_bus_req = 0;
-               dev_dbg(lnw->dev, "User request: b_bus_req = 0\n");
-       } else if (buf[0] == '1') {
-               iotg->hsm.b_bus_req = 1;
-               dev_dbg(lnw->dev, "User request: b_bus_req = 1\n");
-       }
-       if (spin_trylock(&lnw->wq_lock)) {
-               langwell_update_transceiver();
-               spin_unlock(&lnw->wq_lock);
-       }
-       return count;
-}
-static DEVICE_ATTR(b_bus_req, S_IRUGO | S_IWUSR, 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             *lnw = the_transceiver;
-       struct intel_mid_otg_xceiv      *iotg = &lnw->iotg;
-
-       if (!iotg->otg.default_a)
-               return -1;
-       if (count > 2)
-               return -1;
-
-       if (buf[0] == '1') {
-               iotg->hsm.a_clr_err = 1;
-               dev_dbg(lnw->dev, "User request: a_clr_err = 1\n");
-       }
-       if (spin_trylock(&lnw->wq_lock)) {
-               langwell_update_transceiver();
-               spin_unlock(&lnw->wq_lock);
-       }
-       return count;
-}
-static DEVICE_ATTR(a_clr_err, S_IWUSR, 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,
-};
-
-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     *lnw;
-       char                    qname[] = "langwell_otg_queue";
-
-       retval = 0;
-       dev_dbg(&pdev->dev, "\notg controller is detected.\n");
-       if (pci_enable_device(pdev) < 0) {
-               retval = -ENODEV;
-               goto done;
-       }
-
-       lnw = kzalloc(sizeof *lnw, GFP_KERNEL);
-       if (lnw == NULL) {
-               retval = -ENOMEM;
-               goto done;
-       }
-       the_transceiver = lnw;
-
-       /* 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;
-       }
-       lnw->region = 1;
-
-       base = ioremap_nocache(resource, len);
-       if (base == NULL) {
-               retval = -EFAULT;
-               goto err;
-       }
-       lnw->iotg.base = base;
-
-       if (!request_mem_region(USBCFG_ADDR, USBCFG_LEN, driver_name)) {
-               retval = -EBUSY;
-               goto err;
-       }
-       lnw->cfg_region = 1;
-
-       /* For the SCCB.USBCFG register */
-       base = ioremap_nocache(USBCFG_ADDR, USBCFG_LEN);
-       if (base == NULL) {
-               retval = -EFAULT;
-               goto err;
-       }
-       lnw->usbcfg = base;
-
-       if (!pdev->irq) {
-               dev_dbg(&pdev->dev, "No IRQ.\n");
-               retval = -ENODEV;
-               goto err;
-       }
-
-       lnw->qwork = create_singlethread_workqueue(qname);
-       if (!lnw->qwork) {
-               dev_dbg(&pdev->dev, "cannot create workqueue %s\n", qname);
-               retval = -ENOMEM;
-               goto err;
-       }
-       INIT_WORK(&lnw->work, langwell_otg_work);
-
-       /* OTG common part */
-       lnw->dev = &pdev->dev;
-       lnw->iotg.otg.dev = lnw->dev;
-       lnw->iotg.otg.label = driver_name;
-       lnw->iotg.otg.set_host = langwell_otg_set_host;
-       lnw->iotg.otg.set_peripheral = langwell_otg_set_peripheral;
-       lnw->iotg.otg.set_power = langwell_otg_set_power;
-       lnw->iotg.otg.set_vbus = langwell_otg_set_vbus;
-       lnw->iotg.otg.start_srp = langwell_otg_start_srp;
-       lnw->iotg.otg.state = OTG_STATE_UNDEFINED;
-
-       if (otg_set_transceiver(&lnw->iotg.otg)) {
-               dev_dbg(lnw->dev, "can't set transceiver\n");
-               retval = -EBUSY;
-               goto err;
-       }
-
-       reset_otg();
-       init_hsm();
-
-       spin_lock_init(&lnw->lock);
-       spin_lock_init(&lnw->wq_lock);
-       INIT_LIST_HEAD(&active_timers);
-       retval = langwell_otg_init_timers(&lnw->iotg.hsm);
-       if (retval) {
-               dev_dbg(&pdev->dev, "Failed to init timers\n");
-               goto err;
-       }
-
-       init_timer(&lnw->hsm_timer);
-       ATOMIC_INIT_NOTIFIER_HEAD(&lnw->iotg.iotg_notifier);
-
-       lnw->iotg_notifier.notifier_call = langwell_otg_iotg_notify;
-
-       retval = intel_mid_otg_register_notifier(&lnw->iotg,
-                                               &lnw->iotg_notifier);
-       if (retval) {
-               dev_dbg(lnw->dev, "Failed to register notifier\n");
-               goto err;
-       }
-
-       if (request_irq(pdev->irq, otg_irq, IRQF_SHARED,
-                               driver_name, lnw) != 0) {
-               dev_dbg(lnw->dev, "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, lnw->iotg.base + CI_OTGSC);
-
-       retval = device_create_file(&pdev->dev, &dev_attr_registers);
-       if (retval < 0) {
-               dev_dbg(lnw->dev,
-                       "Can't register sysfs attribute: %d\n", retval);
-               goto err;
-       }
-
-       retval = device_create_file(&pdev->dev, &dev_attr_hsm);
-       if (retval < 0) {
-               dev_dbg(lnw->dev, "Can't hsm sysfs attribute: %d\n", retval);
-               goto err;
-       }
-
-       retval = sysfs_create_group(&pdev->dev.kobj, &debug_dev_attr_group);
-       if (retval < 0) {
-               dev_dbg(lnw->dev,
-                       "Can't register sysfs attr group: %d\n", retval);
-               goto err;
-       }
-
-       if (lnw->iotg.otg.state == OTG_STATE_A_IDLE)
-               langwell_update_transceiver();
-
-       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 *lnw = the_transceiver;
-
-       if (lnw->qwork) {
-               flush_workqueue(lnw->qwork);
-               destroy_workqueue(lnw->qwork);
-       }
-       intel_mid_otg_unregister_notifier(&lnw->iotg, &lnw->iotg_notifier);
-       langwell_otg_free_timers();
-
-       /* disable OTGSC interrupt as OTGSC doesn't change in reset */
-       writel(0, lnw->iotg.base + CI_OTGSC);
-
-       if (pdev->irq)
-               free_irq(pdev->irq, lnw);
-       if (lnw->usbcfg)
-               iounmap(lnw->usbcfg);
-       if (lnw->cfg_region)
-               release_mem_region(USBCFG_ADDR, USBCFG_LEN);
-       if (lnw->iotg.base)
-               iounmap(lnw->iotg.base);
-       if (lnw->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(lnw);
-       lnw = 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)
-{
-       struct langwell_otg             *lnw = the_transceiver;
-       struct intel_mid_otg_xceiv      *iotg = &lnw->iotg;
-       int                             ret = 0;
-
-       /* Disbale OTG interrupts */
-       langwell_otg_intr(0);
-
-       if (pdev->irq)
-               free_irq(pdev->irq, lnw);
-
-       /* Prevent more otg_work */
-       flush_workqueue(lnw->qwork);
-       destroy_workqueue(lnw->qwork);
-       lnw->qwork = NULL;
-
-       /* start actions */
-       switch (iotg->otg.state) {
-       case OTG_STATE_A_WAIT_VFALL:
-               iotg->otg.state = OTG_STATE_A_IDLE;
-       case OTG_STATE_A_IDLE:
-       case OTG_STATE_B_IDLE:
-       case OTG_STATE_A_VBUS_ERR:
-               transceiver_suspend(pdev);
-               break;
-       case OTG_STATE_A_WAIT_VRISE:
-               langwell_otg_del_timer(a_wait_vrise_tmr);
-               iotg->hsm.a_srp_det = 0;
-
-               /* Turn off VBus */
-               iotg->otg.set_vbus(&iotg->otg, false);
-               iotg->otg.state = OTG_STATE_A_IDLE;
-               transceiver_suspend(pdev);
-               break;
-       case OTG_STATE_A_WAIT_BCON:
-               del_timer_sync(&lnw->hsm_timer);
-               if (lnw->iotg.stop_host)
-                       lnw->iotg.stop_host(&lnw->iotg);
-               else
-                       dev_dbg(&pdev->dev, "host driver has been removed.\n");
-
-               iotg->hsm.a_srp_det = 0;
-
-               /* Turn off VBus */
-               iotg->otg.set_vbus(&iotg->otg, false);
-               iotg->otg.state = OTG_STATE_A_IDLE;
-               transceiver_suspend(pdev);
-               break;
-       case OTG_STATE_A_HOST:
-               if (lnw->iotg.stop_host)
-                       lnw->iotg.stop_host(&lnw->iotg);
-               else
-                       dev_dbg(&pdev->dev, "host driver has been removed.\n");
-
-               iotg->hsm.a_srp_det = 0;
-
-               /* Turn off VBus */
-               iotg->otg.set_vbus(&iotg->otg, false);
-
-               iotg->otg.state = OTG_STATE_A_IDLE;
-               transceiver_suspend(pdev);
-               break;
-       case OTG_STATE_A_SUSPEND:
-               langwell_otg_del_timer(a_aidl_bdis_tmr);
-               langwell_otg_HABA(0);
-               if (lnw->iotg.stop_host)
-                       lnw->iotg.stop_host(&lnw->iotg);
-               else
-                       dev_dbg(lnw->dev, "host driver has been removed.\n");
-               iotg->hsm.a_srp_det = 0;
-
-               /* Turn off VBus */
-               iotg->otg.set_vbus(&iotg->otg, false);
-               iotg->otg.state = OTG_STATE_A_IDLE;
-               transceiver_suspend(pdev);
-               break;
-       case OTG_STATE_A_PERIPHERAL:
-               del_timer_sync(&lnw->hsm_timer);
-
-               if (lnw->iotg.stop_peripheral)
-                       lnw->iotg.stop_peripheral(&lnw->iotg);
-               else
-                       dev_dbg(&pdev->dev,
-                               "client driver has been removed.\n");
-               iotg->hsm.a_srp_det = 0;
-
-               /* Turn off VBus */
-               iotg->otg.set_vbus(&iotg->otg, false);
-               iotg->otg.state = OTG_STATE_A_IDLE;
-               transceiver_suspend(pdev);
-               break;
-       case OTG_STATE_B_HOST:
-               if (lnw->iotg.stop_host)
-                       lnw->iotg.stop_host(&lnw->iotg);
-               else
-                       dev_dbg(&pdev->dev, "host driver has been removed.\n");
-               iotg->hsm.b_bus_req = 0;
-               iotg->otg.state = OTG_STATE_B_IDLE;
-               transceiver_suspend(pdev);
-               break;
-       case OTG_STATE_B_PERIPHERAL:
-               if (lnw->iotg.stop_peripheral)
-                       lnw->iotg.stop_peripheral(&lnw->iotg);
-               else
-                       dev_dbg(&pdev->dev,
-                               "client driver has been removed.\n");
-               iotg->otg.state = OTG_STATE_B_IDLE;
-               transceiver_suspend(pdev);
-               break;
-       case OTG_STATE_B_WAIT_ACON:
-               /* delete hsm timer for b_ase0_brst_tmr */
-               del_timer_sync(&lnw->hsm_timer);
-
-               langwell_otg_HAAR(0);
-
-               if (lnw->iotg.stop_host)
-                       lnw->iotg.stop_host(&lnw->iotg);
-               else
-                       dev_dbg(&pdev->dev, "host driver has been removed.\n");
-               iotg->hsm.b_bus_req = 0;
-               iotg->otg.state = OTG_STATE_B_IDLE;
-               transceiver_suspend(pdev);
-               break;
-       default:
-               dev_dbg(lnw->dev, "error state before suspend\n");
-               break;
-       }
-
-       return ret;
-}
-
-static void transceiver_resume(struct pci_dev *pdev)
-{
-       pci_restore_state(pdev);
-       pci_set_power_state(pdev, PCI_D0);
-}
-
-static int langwell_otg_resume(struct pci_dev *pdev)
-{
-       struct langwell_otg     *lnw = the_transceiver;
-       int                     ret = 0;
-
-       transceiver_resume(pdev);
-
-       lnw->qwork = create_singlethread_workqueue("langwell_otg_queue");
-       if (!lnw->qwork) {
-               dev_dbg(&pdev->dev, "cannot create langwell otg workqueuen");
-               ret = -ENOMEM;
-               goto error;
-       }
-
-       if (request_irq(pdev->irq, otg_irq, IRQF_SHARED,
-                               driver_name, lnw) != 0) {
-               dev_dbg(&pdev->dev, "request interrupt %d failed\n", pdev->irq);
-               ret = -EBUSY;
-               goto error;
-       }
-
-       /* enable OTG interrupts */
-       langwell_otg_intr(1);
-
-       update_hsm();
-
-       langwell_update_transceiver();
-
-       return ret;
-error:
-       langwell_otg_intr(0);
-       transceiver_suspend(pdev);
-       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 51f17b1..0000000
+++ /dev/null
@@ -1,139 +0,0 @@
-/*
- * Intel Langwell USB OTG transceiver driver
- * Copyright (C) 2008 - 2010, 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
-
-#include <linux/usb/intel_mid_otg.h>
-
-#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_INT_MASK           (0x5f << 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 USBCFG_ADDR                    0xff10801c
-#define USBCFG_LEN                     4
-#      define USBCFG_VBUSVAL           BIT(14)
-#      define USBCFG_AVALID            BIT(13)
-#      define USBCFG_BVALID            BIT(12)
-#      define USBCFG_SESEND            BIT(11)
-
-#define INTR_DUMMY_MASK (USBSTS_SLI | USBSTS_URI | USBSTS_PCI)
-
-enum langwell_otg_timer_type {
-       TA_WAIT_VRISE_TMR,
-       TA_WAIT_BCON_TMR,
-       TA_AIDL_BDIS_TMR,
-       TB_ASE0_BRST_TMR,
-       TB_SE0_SRP_TMR,
-       TB_SRP_INIT_TMR,
-       TB_SRP_FAIL_TMR,
-       TB_BUS_SUSPEND_TMR
-};
-
-#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_INIT    100
-#define TB_SRP_FAIL    5500
-#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 intel_mid_otg_xceiv      iotg;
-       struct device                   *dev;
-
-       void __iomem                    *usbcfg;        /* SCCBUSB config Reg */
-
-       unsigned                        region;
-       unsigned                        cfg_region;
-
-       struct work_struct              work;
-       struct workqueue_struct         *qwork;
-       struct timer_list               hsm_timer;
-
-       spinlock_t                      lock;
-       spinlock_t                      wq_lock;
-
-       struct notifier_block           iotg_notifier;
-};
-
-static inline
-struct langwell_otg *mid_xceiv_to_lnw(struct intel_mid_otg_xceiv *iotg)
-{
-       return container_of(iotg, struct langwell_otg, iotg);
-}
-
-#endif /* __LANGWELL_OTG_H__ */