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GobiSerial.c
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/*===========================================================================
FILE:
GobiSerial.c
DESCRIPTION:
Linux Qualcomm Serial USB driver Implementation
PUBLIC DRIVER FUNCTIONS:
GobiProbe
GobiOpen
GobiClose
GobiReadBulkCallback
GobiSerialSuspend
GobiSerialResume (if kernel is less than 2.6.24)
Copyright (c) 2011, Code Aurora Forum. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
* Neither the name of Code Aurora Forum nor
the names of its contributors may be used to endorse or promote
products derived from this software without specific prior written
permission.
Alternatively, provided that this notice is retained in full, this software
may be relicensed by the recipient under the terms of the GNU General Public
License version 2 ("GPL") and only version 2, in which case the provisions of
the GPL apply INSTEAD OF those given above. If the recipient relicenses the
software under the GPL, then the identification text in the MODULE_LICENSE
macro must be changed to reflect "GPLv2" instead of "Dual BSD/GPL". Once a
recipient changes the license terms to the GPL, subsequent recipients shall
not relicense under alternate licensing terms, including the BSD or dual
BSD/GPL terms. In addition, the following license statement immediately
below and between the words START and END shall also then apply when this
software is relicensed under the GPL:
START
This program is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License version 2 and only version 2 as
published by the Free Software Foundation.
This program is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
details.
You should have received a copy of the GNU General Public License along with
this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
END
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
==========================================================================*/
//---------------------------------------------------------------------------
// Include Files
//---------------------------------------------------------------------------
#include <linux/tty.h>
#include <linux/tty_flip.h>
#include <linux/usb.h>
#include <linux/usb/serial.h>
#include <linux/version.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/serial.h>
/* Determine if we are in a particular kernel series */
#define KERNEL_SERIES(x, y) \
((LINUX_VERSION_CODE >> 8) == (KERNEL_VERSION( x,y,0 ) >> 8))
//---------------------------------------------------------------------------
// Global variables and definitions
//---------------------------------------------------------------------------
// Version Information
#define DRIVER_VERSION "2020-08-17/SWI_2.42"
#define DRIVER_AUTHOR "Qualcomm Innovation Center"
#define DRIVER_DESC "GobiSerial"
#define NUM_BULK_EPS 1
#define MAX_BULK_EPS 6
#define SWIMS_USB_REQUEST_SetHostPower 0x09
#define SET_CONTROL_LINE_STATE_REQUEST_TYPE 0x21
#define SET_CONTROL_LINE_STATE_REQUEST 0x22
#define CONTROL_DTR 0x01
#define CONTROL_RTS 0x02
#define RETURN_ENODEV_WHEN_NULL_PTR(ptr)\
if(unlikely(!ptr))\
{\
return -ENODEV;\
}
#define RETURN_WHEN_NULL_PTR(ptr)\
if(unlikely(!ptr))\
{\
return;\
}
// Debug flag
static int debug;
// flow control flag
static int flow_control = 1;
// allow port open to success even when GPS control message failed
static int ignore_gps_start_error = 1;
#define OPEN_GPS_DELAY_IN_SECOND 10
// Open GPS port delay
static int delay_open_gps_port = OPEN_GPS_DELAY_IN_SECOND;
// Number of serial interfaces
static int nNumInterfaces;
// Enable Zero Lenght Payload on USB3 in QDL Mode
static int iusb3_zlp_enable = 1;
// Global pointer to usb_serial_generic_close function
// This function is not exported, which is why we have to use a pointer
// instead of just calling it.
#if (LINUX_VERSION_CODE <= KERNEL_VERSION( 2,6,26 ))
void (* gpClose)(
struct usb_serial_port *,
struct file * );
#elif (LINUX_VERSION_CODE <= KERNEL_VERSION( 2,6,30 ))
void (* gpClose)(
struct tty_struct *,
struct usb_serial_port *,
struct file * );
#else // > 2.6.30
void (* gpClose)( struct usb_serial_port * );
#endif
// DBG macro
#define DBG( format, arg... ) \
if (debug == 1)\
{ \
printk( KERN_INFO "GobiSerial::%s " format, __FUNCTION__, ## arg ); \
} \
struct gobi_serial_intf_private {
spinlock_t susp_lock;
unsigned int suspended:1;
struct sierra_port_private *pPortdata;
};
/*=========================================================================*/
// Function Prototypes
/*=========================================================================*/
// Attach to correct interfaces
static int GobiProbe(
struct usb_serial * pSerial,
const struct usb_device_id * pID );
// Start GPS if GPS port, run usb_serial_generic_open
#if (LINUX_VERSION_CODE <= KERNEL_VERSION( 2,6,26 ))
int GobiOpen(
struct usb_serial_port * pPort,
struct file * pFilp );
#elif (LINUX_VERSION_CODE <= KERNEL_VERSION( 2,6,31 ))
int GobiOpen(
struct tty_struct * pTTY,
struct usb_serial_port * pPort,
struct file * pFilp );
#else // > 2.6.31
int GobiOpen(
struct tty_struct * pTTY,
struct usb_serial_port * pPort );
#endif
// Stop GPS if GPS port, run usb_serial_generic_close
#if (LINUX_VERSION_CODE <= KERNEL_VERSION( 2,6,26 ))
void GobiClose(
struct usb_serial_port *,
struct file * );
#elif (LINUX_VERSION_CODE <= KERNEL_VERSION( 2,6,30 ))
void GobiClose(
struct tty_struct *,
struct usb_serial_port *,
struct file * );
#else // > 2.6.30
void GobiClose( struct usb_serial_port * );
#endif
// Read data from USB, push to TTY and user space
static void GobiReadBulkCallback( struct urb * pURB );
// Set reset_resume flag
int GobiSerialSuspend(
struct usb_interface * pIntf,
pm_message_t powerEvent );
int GobiUSBSerialSuspend(struct usb_serial *serial, pm_message_t message);
int GobiUSBSerialResume(struct usb_serial *serial);
int GobiUSBSerialResetResume(struct usb_serial *serial);
void GobiUSBSerialDisconnect(struct usb_serial * serial);
static int Gobi_write(struct tty_struct *tty, struct usb_serial_port *port,
const unsigned char *buf, int count);
bool IsDeviceUnbinding(struct usb_serial *serial);
void GobiUSBSendZeroConfigMsg(struct usb_serial *serial);
int gobi_usb_bulk_msg(struct usb_device *usb_dev, unsigned int pipe,
void *data, int len, int *actual_length,
int timeout);
#if (LINUX_VERSION_CODE <= KERNEL_VERSION( 2,6,23 ))
// Restart URBs killed during usb_serial_suspend
int GobiSerialResume( struct usb_interface * pIntf );
#endif
void stop_read_write_urbs(struct usb_serial *serial);
#define MDM9X15_DEVICE(vend, prod) \
USB_DEVICE(vend, prod), \
.driver_info = BIT(1) | BIT(8) | BIT(10) | BIT(11)
#define G3K_DEVICE(vend, prod) \
USB_DEVICE(vend, prod), \
.driver_info = BIT(0)
#if ((KERNEL_SERIES( 3,4 ) && LINUX_VERSION_CODE >= KERNEL_VERSION( 3,4,34 )) || \
(KERNEL_SERIES( 3,2 ) && LINUX_VERSION_CODE >= KERNEL_VERSION( 3,2,0 )) || \
(KERNEL_SERIES( 3,5 ) && LINUX_VERSION_CODE >= KERNEL_VERSION( 3,5,0 )) || \
(KERNEL_SERIES( 3,7 ) && LINUX_VERSION_CODE >= KERNEL_VERSION( 3,7,10 )) || \
(KERNEL_SERIES( 3,8 ) && LINUX_VERSION_CODE >= KERNEL_VERSION( 3,8,1) ) || \
(LINUX_VERSION_CODE >= KERNEL_VERSION( 3,8,1) ))
/* workaround for upstream commit b2ca699076573c94fee9a73cb0d8645383b602a0 */
#warning "Assuming disc_mutex is locked external to the module"
static inline void Gobi_lock_disc_mutex(struct usb_serial *serial) {
if (LINUX_VERSION_CODE < KERNEL_VERSION( 3,12,0) )
{
WARN_ON(!mutex_is_locked(&serial->disc_mutex));
}
}
static inline void Gobi_unlock_disc_mutex(struct usb_serial *serial) {}
#else
/* use the legacy method of locking disc_mutex in this driver */
#warning "Using legacy method of locking disc_mutex"
static inline void Gobi_lock_disc_mutex(struct usb_serial *serial) {
mutex_lock(&serial->disc_mutex);
}
static inline void Gobi_unlock_disc_mutex(struct usb_serial *serial) {
mutex_unlock(&serial->disc_mutex);
}
#endif
/*=========================================================================*/
// Qualcomm Gobi 3000 VID/PIDs
/*=========================================================================*/
static struct usb_device_id GobiVIDPIDTable[] =
{
{ USB_DEVICE(0x05c6, 0x920c) }, // Gobi 3000 QDL
{ USB_DEVICE(0x05c6, 0x920d) }, // Gobi 3000 Composite
/* Sierra Wireless QMI VID/PID */
{ USB_DEVICE(0x1199, 0x68A2),
.driver_info = BIT(8) | BIT(19) | BIT(20) |
BIT(10) | BIT(11) /* in case a MDM9x15 switched to 0x68a2 */
},
/* Sierra Wireless QMI MC78/WP7/AR7 */
{ USB_DEVICE(0x1199, 0x68C0),
/* blacklist the interface */
/* whitelist interfaces 5 for raw data */
.driver_info = BIT(1) | BIT(6) | BIT(8) | BIT(10) | BIT(11) | BIT(12) | BIT(13)
},
/* Sierra Wireless QMI MC74xx/EM74xx */
{ USB_DEVICE(0x1199, 0x9071),
/* blacklist the interface */
.driver_info = BIT(1) | BIT(4) | BIT(5) | BIT(6) | BIT(8) | BIT(10) | BIT(11) | BIT(12) | BIT(13)
},
/* Sierra Wireless QMI MC74xx/EM74xx */
{ USB_DEVICE(0x1199, 0x9070),
/* blacklist the interface */
.driver_info = BIT(1) | BIT(4) | BIT(5) | BIT(6) | BIT(8) | BIT(10) | BIT(11) | BIT(12) | BIT(13)
},
/* Sierra Wireless QMI AR759x */
{ USB_DEVICE(0x1199, 0x9100),
/* blacklist the interface */
/* whitelist interfaces 5 & 6 for raw data and open sim resp. */
.driver_info = BIT(1) | BIT(8) | BIT(10) | BIT(11) | BIT(12) | BIT(13)
},
/* Sierra Wireless QMI AR758x */
{ USB_DEVICE(0x1199, 0x9102),
/* blacklist the interface */
/* whitelist interfaces 5 & 6 for raw data and open sim resp. */
.driver_info = BIT(1) | BIT(8) | BIT(10) | BIT(11) | BIT(12) | BIT(13)
},
/* Sierra Wireless QMI MC75xx/EM75xx BOOT*/
{ USB_DEVICE(0x1199, 0x9090),
/* blacklist the interface */
.driver_info = BIT(1) | BIT(5) | BIT(6) | BIT(8) | BIT(10) | BIT(11) | BIT(12) | BIT(13)
},
{ USB_DEVICE(0x1199, 0x9091),
/* blacklist the interface */
.driver_info = BIT(1) | BIT(5) | BIT(6) | BIT(8) | BIT(10) | BIT(11) | BIT(12) | BIT(13)
},
{ USB_DEVICE(0x1199, 0x90b0),
/* blacklist the interface */
.driver_info = BIT(1) | BIT(5) | BIT(6) | BIT(8) | BIT(10) | BIT(11) | BIT(12) | BIT(13)
},
{ USB_DEVICE(0x1199, 0x90b1),
/* blacklist the interface */
.driver_info = BIT(1) | BIT(5) | BIT(6) | BIT(8) | BIT(10) | BIT(11) | BIT(12) | BIT(13)
},
{ USB_DEVICE(0x1199, 0x90c0),
/* blacklist the interface */
.driver_info = BIT(1) | BIT(5) | BIT(6) | BIT(8) | BIT(10) | BIT(11) | BIT(12) | BIT(13)
},
{ USB_DEVICE(0x1199, 0x90c1),
/* blacklist the interface */
.driver_info = BIT(1) | BIT(5) | BIT(6) | BIT(8) | BIT(10) | BIT(11) | BIT(12) | BIT(13)
},
/* Sierra Wireless QMI RC51xx APP*/
{ USB_DEVICE(0x1199, 0x9081),
/* blacklist the interface */
.driver_info = BIT(1) | BIT(4) | BIT(5) | BIT(6) | BIT(8) | BIT(10) | BIT(11) | BIT(12) | BIT(13)
},
/* Sierra Wireless QMI RC51xx BOOT*/
{ USB_DEVICE(0x1199, 0x9080),
/* blacklist the interface */
.driver_info = BIT(1) | BIT(4) | BIT(5) | BIT(6) | BIT(8) | BIT(10) | BIT(11) | BIT(12) | BIT(13)
},
{G3K_DEVICE(0x1199, 0x9010)},
{G3K_DEVICE(0x1199, 0x9011)},
{G3K_DEVICE(0x1199, 0x9012)},
{G3K_DEVICE(0x1199, 0x9013)},
{G3K_DEVICE(0x1199, 0x9014)},
{G3K_DEVICE(0x1199, 0x9015)},
{G3K_DEVICE(0x1199, 0x9018)},
{G3K_DEVICE(0x1199, 0x9019)},
{MDM9X15_DEVICE(0x1199, 0x9040)},
{MDM9X15_DEVICE(0x1199, 0x9041)},
{MDM9X15_DEVICE(0x1199, 0x9051)},
{MDM9X15_DEVICE(0x1199, 0x9053)},
{MDM9X15_DEVICE(0x1199, 0x9054)},
{MDM9X15_DEVICE(0x1199, 0x9055)},
{MDM9X15_DEVICE(0x1199, 0x9056)},
{MDM9X15_DEVICE(0x1199, 0x9060)},
{MDM9X15_DEVICE(0x1199, 0x9061)},
{ } // Terminating entry
};
MODULE_DEVICE_TABLE( usb, GobiVIDPIDTable );
enum {
eSendUnknown=-1,
eSendStart=0,
eSendEnd=1,
};
/* per port private data */
struct sierra_port_private {
/* Settings for the port */
int rts_state; /* Handshaking pins (outputs) */
int dtr_state;
int isClosing;
int iGPSStartState;
unsigned long ulExpires;
int iUsb3ZlpEnable;
};
int gobi_usb_serial_generic_resume(struct usb_interface *intf)
{
struct usb_serial *serial = usb_get_intfdata(intf);
return usb_serial_generic_resume(serial);
}
/*=========================================================================*/
// Struct usb_serial_driver
// Driver structure we register with the USB core
/*=========================================================================*/
static struct usb_driver GobiDriver =
{
.name = "GobiSerial",
#if (LINUX_VERSION_CODE < KERNEL_VERSION( 3,5,0 ))
.probe = usb_serial_probe,
.disconnect = usb_serial_disconnect,
#endif
.id_table = GobiVIDPIDTable,
#ifdef CONFIG_PM
.suspend = usb_serial_suspend,
.resume = gobi_usb_serial_generic_resume,
.reset_resume = gobi_usb_serial_generic_resume,
.supports_autosuspend = true,
#else
.suspend = NULL,
.resume = NULL,
.supports_autosuspend = false,
#endif
};
static int Gobi_calc_interface(struct usb_serial *serial)
{
int interface;
struct usb_interface *p_interface;
struct usb_host_interface *p_host_interface;
dev_dbg(&serial->dev->dev, "%s\n", __func__);
/* Get the interface structure pointer from the serial struct */
p_interface = serial->interface;
/* Get a pointer to the host interface structure */
p_host_interface = p_interface->cur_altsetting;
/* read the interface descriptor for this active altsetting
* to find out the interface number we are on
*/
interface = p_host_interface->desc.bInterfaceNumber;
return interface;
}
static int Gobi_send_setup(struct usb_serial_port *port)
{
struct usb_serial *serial = NULL;
struct sierra_port_private *portdata = NULL;
__u16 interface = 0;
int val = 0;
int retval;
RETURN_ENODEV_WHEN_NULL_PTR(port);
dev_dbg(&port->dev, "%s\n", __func__);
serial = port->serial;
RETURN_ENODEV_WHEN_NULL_PTR(serial);
portdata = usb_get_serial_port_data(port);
RETURN_ENODEV_WHEN_NULL_PTR(portdata);
if (portdata->dtr_state)
val |= CONTROL_DTR;
if (portdata->rts_state)
val |= CONTROL_RTS;
/* obtain interface for usb control message below */
if (serial->num_ports == 1) {
interface = Gobi_calc_interface(serial);
}
else {
dev_err(&port->dev,
"flow control is not supported for %d serial port\n",
serial->num_ports);
return -ENODEV;
}
retval = usb_autopm_get_interface(serial->interface);
if (retval < 0)
{
return retval;
}
retval = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
SET_CONTROL_LINE_STATE_REQUEST,
SET_CONTROL_LINE_STATE_REQUEST_TYPE,
val, interface, NULL, 0, USB_CTRL_SET_TIMEOUT);
usb_autopm_put_interface(serial->interface);
return retval;
}
static void Gobi_dtr_rts(struct usb_serial_port *port, int on)
{
struct usb_serial *serial = NULL;
struct sierra_port_private *portdata = NULL;
RETURN_WHEN_NULL_PTR(port);
serial = port->serial;
RETURN_WHEN_NULL_PTR(serial);
portdata = usb_get_serial_port_data(port);
RETURN_WHEN_NULL_PTR(portdata);
portdata->rts_state = on;
portdata->dtr_state = on;
/* only send down the usb control message if enabled */
if (serial->dev && flow_control) {
Gobi_lock_disc_mutex(serial);
if (!serial->disconnected)
{
Gobi_send_setup(port);
}
Gobi_unlock_disc_mutex(serial);
}
}
/*
* swiState
* 0x0000 Host device is awake
* 0x0001 Host device is suspended
*/
static int set_power_state(struct usb_device *udev, __u16 swiState)
{
int result;
dev_dbg(&udev->dev, "%s\n", __func__);
result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
SWIMS_USB_REQUEST_SetHostPower, /* __u8 request */
USB_TYPE_VENDOR, /* __u8 request type */
swiState, /* __u16 value */
0, /* __u16 index */
NULL, /* void *data */
0, /* __u16 size */
USB_CTRL_SET_TIMEOUT); /* int timeout */
return result;
}
static int Gobi_startup(struct usb_serial *serial)
{
struct usb_serial_port *port = NULL;
struct sierra_port_private *portdata = NULL;
struct gobi_serial_intf_private *intfdata = NULL;
int i;
RETURN_ENODEV_WHEN_NULL_PTR(serial);
RETURN_ENODEV_WHEN_NULL_PTR(serial->dev)
dev_dbg(&serial->dev->dev, "%s\n", __func__);
if (serial->num_ports) {
/* Note: One big piece of memory is allocated for all ports
* private data in one shot. This memory is split into equal
* pieces for each port.
*/
portdata = (struct sierra_port_private *)kzalloc
(sizeof(*portdata) * serial->num_ports, GFP_KERNEL);
if (!portdata) {
dev_dbg(&serial->dev->dev, "%s: No memory!\n", __func__);
return -ENOMEM;
}
}
intfdata = usb_get_serial_data(serial);
if(intfdata)
{
intfdata->pPortdata = portdata;
}
else
{
kfree(portdata);
return -ENOMEM;
}
/* Now setup per port private data */
for (i = 0; i < serial->num_ports; i++, portdata++) {
struct sierra_port_private *privatedata;
privatedata = portdata;
privatedata->iGPSStartState = eSendUnknown;
privatedata->ulExpires = jiffies + msecs_to_jiffies(delay_open_gps_port*1000);
port = serial->port[i];
privatedata->iUsb3ZlpEnable = iusb3_zlp_enable;
/* Set the port private data pointer */
usb_set_serial_port_data(port, portdata);
}
return 0;
}
void Gobi_portremove(struct usb_serial_port *port)
{
struct sierra_port_private *portdata = NULL;
struct gobi_serial_intf_private *intfdata = NULL;
u8 port_number;
// Test parameters
// RETURN_ENODEV_WHEN_NULL_PTR(port);
portdata = usb_get_serial_port_data(port);
usb_set_serial_port_data(port, NULL);
intfdata = usb_get_serial_data(port->serial);
#if (LINUX_VERSION_CODE >= KERNEL_VERSION( 3,11,0 ))
port_number = (u8)port->port_number;
#else
port_number = (u8)port->number;
#endif
if(port_number==0)
{
if(intfdata)
{
intfdata->pPortdata = NULL;
}
if(portdata)
kfree(portdata);
}
// return 0;
}
void GobiUSBSendZeroConfigMsg(struct usb_serial *serial)
{
int ret = 0;
DBG("\n");
if(!serial)
{
return ;
}
if(!serial->dev)
{
return ;
}
ret = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
USB_REQ_SET_CONFIGURATION, 0,
serial->dev->actconfig->desc.bConfigurationValue, 0,
NULL, 0, USB_CTRL_SET_TIMEOUT);
if (ret < 0)
{
printk( KERN_INFO "Send ZERO CONF FAIL!\n" );
}
}
bool IsDeviceUnbinding(struct usb_serial *serial)
{
struct usb_device *udev = NULL;
struct usb_interface *interface = NULL;
DBG("\n");
if((!serial)||
(!serial->interface) ||
(!serial->interface->cur_altsetting))
{
return false;
}
#if (LINUX_VERSION_CODE >= KERNEL_VERSION( 2,6,33 ))
if(serial->interface->resetting_device)
{
return false;
}
#endif
if (serial->num_ports < 1)
{
return false;
}
interface = serial->interface;
if(!serial->dev)
{
return false;
}
udev = serial->dev;
if((!udev)||
(!udev->parent))
{
return false;
}
if ((udev->parent->state == USB_STATE_NOTATTACHED )||
(udev->state == USB_STATE_NOTATTACHED ))
{
return false;
}
if(interface->cur_altsetting->desc.bInterfaceNumber!=0)
{
return false;
}
if(interface->condition == USB_INTERFACE_UNBINDING)
{
return true;
}
return false;
}
static void Gobi_release(struct usb_serial *serial)
{
int i;
struct usb_serial_port *port;
struct sierra_port_private *portdata;
struct gobi_serial_intf_private *intfdata = NULL;
if(!serial)
return ;
if(!serial->dev)
return ;
dev_dbg(&serial->dev->dev, "%s\n", __func__);
//Set USB CONFIGURATION to ZERO
if(IsDeviceUnbinding(serial))
{
GobiUSBSendZeroConfigMsg(serial);
}
intfdata = usb_get_serial_data(serial);
usb_set_serial_data(serial,NULL);
stop_read_write_urbs(serial);
if (serial->num_ports > 0) {
port = serial->port[0];
if (port)
{
/* Note: The entire piece of memory that was allocated
* in the startup routine can be released by passing
* a pointer to the beginning of the piece.
* This address corresponds to the address of the chunk
* that was given to port 0.
*/
portdata = usb_get_serial_port_data(port);
usb_set_serial_port_data(port, NULL);
if(portdata)
{
intfdata->pPortdata = NULL;
kfree(portdata);
}
else
{
if(intfdata)
{
portdata = intfdata->pPortdata;
if(portdata)
{
kfree(portdata);
}
intfdata->pPortdata = NULL;
}
}
}
}
for (i = 0; i < serial->num_ports; ++i) {
port = serial->port[i];
if (!port)
{
continue;
}
usb_set_serial_port_data(port, NULL);
}
if(intfdata)
{
kfree(intfdata);
}
}
/*=========================================================================*/
// Struct usb_serial_driver
/*=========================================================================*/
static struct usb_serial_driver gGobiDevice =
{
.driver =
{
.owner = THIS_MODULE,
.name = "GobiSerial driver",
},
.description = "GobiSerial",
.id_table = GobiVIDPIDTable,
.usb_driver = &GobiDriver,
.num_ports = NUM_BULK_EPS,
.probe = GobiProbe,
.open = GobiOpen,
#if (LINUX_VERSION_CODE < KERNEL_VERSION( 2,6,25 ))
.num_interrupt_in = NUM_DONT_CARE,
.num_bulk_in = 1,
.num_bulk_out = 1,
#endif
.write = Gobi_write,
/* TODO PowerPC RD1020DB kernel 3.0 support
*/
/* register read_bulk_callback in order to resume upon -EPROTO
*/
.read_bulk_callback = GobiReadBulkCallback,
.dtr_rts = Gobi_dtr_rts,
.attach = Gobi_startup,
.port_remove = Gobi_portremove,
.release = Gobi_release,
.disconnect = GobiUSBSerialDisconnect,
#ifdef CONFIG_PM
.suspend = GobiUSBSerialSuspend,
.resume = GobiUSBSerialResume,
#if (LINUX_VERSION_CODE >= KERNEL_VERSION( 3,5,0 ))
.reset_resume = GobiUSBSerialResetResume,
#endif
#endif
};
#if (LINUX_VERSION_CODE >= KERNEL_VERSION( 3,4,0 ))
static struct usb_serial_driver * const serial_drivers[] = {
&gGobiDevice, NULL
};
#endif
//---------------------------------------------------------------------------
// USB serial core overridding Methods
//---------------------------------------------------------------------------
/*===========================================================================
METHOD:
GobiProbe (Free Method)
DESCRIPTION:
Attach to correct interfaces
PARAMETERS:
pSerial [ I ] - Serial structure
pID [ I ] - VID PID table
RETURN VALUE:
int - negative error code on failure
zero on success
===========================================================================*/
static int GobiProbe(
struct usb_serial * pSerial,
const struct usb_device_id * pID )
{
// Assume failure
int nRetval = -ENODEV;
int nInterfaceNum;
struct usb_host_endpoint * pEndpoint;
int endpointIndex;
int numEndpoints;
struct gobi_serial_intf_private *intfdata;
DBG( "\n" );
// Test parameters
if ( (pSerial == NULL)
|| (pSerial->dev == NULL)
|| (pSerial->dev->actconfig == NULL)
|| (pSerial->interface == NULL)
|| (pSerial->interface->cur_altsetting == NULL)
|| (pSerial->type == NULL) )
{
DBG( "invalid parameter\n" );
return -EINVAL;
}
intfdata = kzalloc(sizeof(*intfdata), GFP_KERNEL);
if (!intfdata)
return -ENOMEM;
spin_lock_init(&intfdata->susp_lock);
usb_set_serial_data(pSerial, intfdata);
nNumInterfaces = pSerial->dev->actconfig->desc.bNumInterfaces;
DBG( "Num Interfaces = %d\n", nNumInterfaces );
nInterfaceNum = pSerial->interface->cur_altsetting->desc.bInterfaceNumber;
DBG( "This Interface = %d\n", nInterfaceNum );
#ifdef CONFIG_PM
pSerial->dev->reset_resume = 0;
#endif
if (nNumInterfaces == 1)
{
// QDL mode?
if ((nInterfaceNum == 0) || (nInterfaceNum == 1))
{
DBG( "QDL port found\n" );
nRetval = usb_set_interface( pSerial->dev,
nInterfaceNum,
0 );
if (nRetval < 0)
{
DBG( "Could not set interface, error %d\n", nRetval );
}
}
else
{
DBG( "Incorrect QDL interface number\n" );
}
}
else if (nNumInterfaces > 1)
{
/* Composite mode */
if (pSerial->interface->cur_altsetting->desc.bInterfaceClass != USB_CLASS_VENDOR_SPEC )
{
DBG( "Ignoring non vendor class interface #%d\n", nInterfaceNum );
usb_set_serial_data(pSerial, NULL);
kfree(intfdata);
return -ENODEV;
}
else if (pID->driver_info &&
test_bit(nInterfaceNum, &pID->driver_info)) {
DBG( "Ignoring blacklisted interface #%d\n", nInterfaceNum );
usb_set_serial_data(pSerial, NULL);
kfree(intfdata);
return -ENODEV;
}
else
{
nRetval = usb_set_interface( pSerial->dev,
nInterfaceNum,
0 );
if (nRetval < 0)
{
DBG( "Could not set interface, error %d\n", nRetval );
}
// Check for recursion
if (pSerial->type->close != GobiClose)
{
// Store usb_serial_generic_close in gpClose
gpClose = pSerial->type->close;
pSerial->type->close = GobiClose;
}
}
}
if (nRetval == 0 && nNumInterfaces > 1 )
{
// Clearing endpoint halt is a magic handshake that brings
// the device out of low power (airplane) mode
// NOTE: FCC verification should be done before this, if required
numEndpoints = pSerial->interface->cur_altsetting
->desc.bInterfaceNumber;
for (endpointIndex = 0; endpointIndex < numEndpoints; endpointIndex++)
{
pEndpoint = pSerial->interface->cur_altsetting->endpoint
+ endpointIndex;
if (pEndpoint != NULL
&& usb_endpoint_dir_out( &pEndpoint->desc ) == true)
{
int pipe = usb_sndbulkpipe( pSerial->dev,
pEndpoint->desc.bEndpointAddress );
nRetval = usb_clear_halt( pSerial->dev, pipe );
// Should only be one
break;
}
}
}
return nRetval;
}
/*===========================================================================
METHOD:
IsGPSPort (Free Method)
DESCRIPTION:
Determines whether the interface is GPS port
PARAMETERS:
pPort [ I ] - USB serial port structure
RETURN VALUE:
bool- true if this is a GPS port
- false otherwise
===========================================================================*/
bool IsGPSPort(struct usb_serial_port * pPort )
{
DBG( "Product=0x%x, Interface=0x%x\n",
cpu_to_le16(pPort->serial->dev->descriptor.idProduct),
pPort->serial->interface->cur_altsetting->desc.bInterfaceNumber);
switch (cpu_to_le16(pPort->serial->dev->descriptor.idProduct))
{
case 0x68A2: /* Sierra Wireless QMI */
case 0x68C0:
case 0x9041:
case 0x9071:
case 0x9070:
//9x50
case 0x9090:
//9x50
case 0x9091:
case 0x90b0:
case 0x90b1:
case 0x9100:
case 0x9102:
if (pPort->serial->interface->cur_altsetting->desc.bInterfaceNumber == 2)
return true;
break;
case 0x9011: /* Sierra Wireless G3K */
case 0x9013: /* Sierra Wireless G3K */
case 0x9015: /* Sierra Wireless G3K */
case 0x9019: /* Sierra Wireless G3K */
case 0x371D: /* G3K */
if (pPort->serial->interface->cur_altsetting->desc.bInterfaceNumber == 3)
return true;
break;
default:
return false;
break;
}
return false;
}
/*===========================================================================
METHOD:
GobiOpen (Free Method)
DESCRIPTION:
Start GPS if GPS port, run usb_serial_generic_open
PARAMETERS:
pTTY [ I ] - TTY structure (only on kernels <= 2.6.26)
pPort [ I ] - USB serial port structure