static int acm_probe(struct usb_interface *intf,
const struct usb_device_id *id)
{
struct usb_cdc_union_desc *union_header = NULL;
struct usb_cdc_country_functional_desc *cfd = NULL;
unsigned char *buffer = intf->altsetting->extra;
int buflen = intf->altsetting->extralen;
struct usb_interface *control_interface;
struct usb_interface *data_interface;
struct usb_endpoint_descriptor *epctrl = NULL;
struct usb_endpoint_descriptor *epread = NULL;
struct usb_endpoint_descriptor *epwrite = NULL;
struct usb_device *usb_dev = interface_to_usbdev(intf);
struct acm *acm;
int minor;
int ctrlsize, readsize;
u8 *buf;
u8 ac_management_function = 0;
u8 call_management_function = 0;
int call_interface_num = -1;
int data_interface_num = -1;
unsigned long quirks;
int num_rx_buf;
int i;
int combined_interfaces = 0;
quirks = (unsigned long)id->driver_info;
num_rx_buf = (quirks == SINGLE_RX_URB) ? 1 : ACM_NR;
if (quirks == NO_UNION_NORMAL) {
data_interface = usb_ifnum_to_if(usb_dev, 1);
control_interface = usb_ifnum_to_if(usb_dev, 0);
goto skip_normal_probe;
}
if (!buffer) {
dev_err(&intf->dev, "Weird descriptor references\n");
return -EINVAL;
}
if (!buflen) {
if (intf->cur_altsetting->endpoint &&
intf->cur_altsetting->endpoint->extralen &&
intf->cur_altsetting->endpoint->extra) {
dev_dbg(&intf->dev,
"Seeking extra descriptors on endpoint\n");
buflen = intf->cur_altsetting->endpoint->extralen;
buffer = intf->cur_altsetting->endpoint->extra;
} else {
dev_err(&intf->dev,
"Zero length descriptor references\n");
return -EINVAL;
}
}
while (buflen > 0) {
if (buffer[1] != USB_DT_CS_INTERFACE) {
dev_err(&intf->dev, "skipping garbage\n");
goto next_desc;
}
switch (buffer[2]) {
case USB_CDC_UNION_TYPE:
if (union_header) {
dev_err(&intf->dev, "More than one "
"union descriptor, skipping ...\n");
goto next_desc;
}
union_header = (struct usb_cdc_union_desc *)buffer;
break;
case USB_CDC_COUNTRY_TYPE:
cfd = (struct usb_cdc_country_functional_desc *)buffer;
break;
case USB_CDC_HEADER_TYPE:
break;
case USB_CDC_ACM_TYPE:
ac_management_function = buffer[3];
break;
case USB_CDC_CALL_MANAGEMENT_TYPE:
call_management_function = buffer[3];
call_interface_num = buffer[4];
if ( (quirks & NOT_A_MODEM) == 0 && (call_management_function & 3) != 3)
dev_err(&intf->dev, "This device cannot do calls on its own. It is not a modem.\n");
break;
default:
dev_dbg(&intf->dev, "Ignoring descriptor: "
"type %02x, length %d\n",
buffer[2], buffer[0]);
break;
}
next_desc:
buflen -= buffer[0];
buffer += buffer[0];
}
if (!union_header) {
if (call_interface_num > 0) {
dev_dbg(&intf->dev, "No union descriptor, using call management descriptor\n");
if (quirks & NO_DATA_INTERFACE)
data_interface = usb_ifnum_to_if(usb_dev, 0);
else
data_interface = usb_ifnum_to_if(usb_dev, (data_interface_num = call_interface_num));
control_interface = intf;
} else {
if (intf->cur_altsetting->desc.bNumEndpoints != 3) {
dev_dbg(&intf->dev,"No union descriptor, giving up\n");
return -ENODEV;
} else {
dev_warn(&intf->dev,"No union descriptor, testing for castrated device\n");
combined_interfaces = 1;
control_interface = data_interface = intf;
goto look_for_collapsed_interface;
}
}
} else {
control_interface = usb_ifnum_to_if(usb_dev, union_header->bMasterInterface0);
data_interface = usb_ifnum_to_if(usb_dev, (data_interface_num = union_header->bSlaveInterface0));
if (!control_interface || !data_interface) {
dev_dbg(&intf->dev, "no interfaces\n");
return -ENODEV;
}
}
if (data_interface_num != call_interface_num)
dev_dbg(&intf->dev, "Separate call control interface. That is not fully supported.\n");
if (control_interface == data_interface) {
dev_warn(&intf->dev,"Control and data interfaces are not separated!\n");
combined_interfaces = 1;
quirks |= NO_CAP_LINE;
if (data_interface->cur_altsetting->desc.bNumEndpoints != 3) {
dev_err(&intf->dev, "This needs exactly 3 endpoints\n");
return -EINVAL;
}
look_for_collapsed_interface:
for (i = 0; i < 3; i++) {
struct usb_endpoint_descriptor *ep;
ep = &data_interface->cur_altsetting->endpoint[i].desc;
if (usb_endpoint_is_int_in(ep))
epctrl = ep;
else if (usb_endpoint_is_bulk_out(ep))
epwrite = ep;
else if (usb_endpoint_is_bulk_in(ep))
epread = ep;
else
return -EINVAL;
}
if (!epctrl || !epread || !epwrite)
return -ENODEV;
else
goto made_compressed_probe;
}
skip_normal_probe:
if (data_interface->cur_altsetting->desc.bInterfaceClass
!= CDC_DATA_INTERFACE_TYPE) {
if (control_interface->cur_altsetting->desc.bInterfaceClass
== CDC_DATA_INTERFACE_TYPE) {
struct usb_interface *t;
dev_dbg(&intf->dev,
"Your device has switched interfaces.\n");
t = control_interface;
control_interface = data_interface;
data_interface = t;
} else {
return -EINVAL;
}
}
if (!combined_interfaces && intf != control_interface)
return -ENODEV;
if (!combined_interfaces && usb_interface_claimed(data_interface)) {
dev_dbg(&intf->dev, "The data interface isn't available\n");
return -EBUSY;
}
if (data_interface->cur_altsetting->desc.bNumEndpoints < 2)
return -EINVAL;
epctrl = &control_interface->cur_altsetting->endpoint[0].desc;
epread = &data_interface->cur_altsetting->endpoint[0].desc;
epwrite = &data_interface->cur_altsetting->endpoint[1].desc;
if (!usb_endpoint_dir_in(epread)) {
struct usb_endpoint_descriptor *t;
dev_dbg(&intf->dev,
"The data interface has switched endpoints\n");
t = epread;
epread = epwrite;
epwrite = t;
}
made_compressed_probe:
dev_dbg(&intf->dev, "interfaces are valid\n");
acm = kzalloc(sizeof(struct acm), GFP_KERNEL);
if (acm == NULL) {
dev_err(&intf->dev, "out of memory (acm kzalloc)\n");
goto alloc_fail;
}
minor = acm_alloc_minor(acm);
if (minor == ACM_TTY_MINORS) {
dev_err(&intf->dev, "no more free acm devices\n");
kfree(acm);
return -ENODEV;
}
ctrlsize = usb_endpoint_maxp(epctrl);
readsize = usb_endpoint_maxp(epread) *
(quirks == SINGLE_RX_URB ? 1 : 2);
acm->combined_interfaces = combined_interfaces;
acm->writesize = usb_endpoint_maxp(epwrite) * 20;
acm->control = control_interface;
acm->data = data_interface;
acm->minor = minor;
acm->dev = usb_dev;
acm->ctrl_caps = ac_management_function;
if (quirks & NO_CAP_LINE)
acm->ctrl_caps &= ~USB_CDC_CAP_LINE;
acm->ctrlsize = ctrlsize;
acm->readsize = readsize;
acm->rx_buflimit = num_rx_buf;
INIT_WORK(&acm->work, acm_softint);
spin_lock_init(&acm->write_lock);
spin_lock_init(&acm->read_lock);
mutex_init(&acm->mutex);
acm->rx_endpoint = usb_rcvbulkpipe(usb_dev, epread->bEndpointAddress);
acm->is_int_ep = usb_endpoint_xfer_int(epread);
if (acm->is_int_ep)
acm->bInterval = epread->bInterval;
tty_port_init(&acm->port);
acm->port.ops = &acm_port_ops;
buf = usb_alloc_coherent(usb_dev, ctrlsize, GFP_KERNEL, &acm->ctrl_dma);
if (!buf) {
dev_err(&intf->dev, "out of memory (ctrl buffer alloc)\n");
goto alloc_fail2;
}
acm->ctrl_buffer = buf;
if (acm_write_buffers_alloc(acm) < 0) {
dev_err(&intf->dev, "out of memory (write buffer alloc)\n");
goto alloc_fail4;
}
acm->ctrlurb = usb_alloc_urb(0, GFP_KERNEL);
if (!acm->ctrlurb) {
dev_err(&intf->dev, "out of memory (ctrlurb kmalloc)\n");
goto alloc_fail5;
}
for (i = 0; i < num_rx_buf; i++) {
struct acm_rb *rb = &(acm->read_buffers[i]);
struct urb *urb;
rb->base = usb_alloc_coherent(acm->dev, readsize, GFP_KERNEL,
&rb->dma);
if (!rb->base) {
dev_err(&intf->dev, "out of memory "
"(read bufs usb_alloc_coherent)\n");
goto alloc_fail6;
}
rb->index = i;
rb->instance = acm;
urb = usb_alloc_urb(0, GFP_KERNEL);
if (!urb) {
dev_err(&intf->dev,
"out of memory (read urbs usb_alloc_urb)\n");
goto alloc_fail6;
}
urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
urb->transfer_dma = rb->dma;
if (acm->is_int_ep) {
usb_fill_int_urb(urb, acm->dev,
acm->rx_endpoint,
rb->base,
acm->readsize,
acm_read_bulk_callback, rb,
acm->bInterval);
} else {
usb_fill_bulk_urb(urb, acm->dev,
acm->rx_endpoint,
rb->base,
acm->readsize,
acm_read_bulk_callback, rb);
}
acm->read_urbs[i] = urb;
__set_bit(i, &acm->read_urbs_free);
}
for (i = 0; i < ACM_NW; i++) {
struct acm_wb *snd = &(acm->wb[i]);
snd->urb = usb_alloc_urb(0, GFP_KERNEL);
if (snd->urb == NULL) {
dev_err(&intf->dev,
"out of memory (write urbs usb_alloc_urb)\n");
goto alloc_fail7;
}
if (usb_endpoint_xfer_int(epwrite))
usb_fill_int_urb(snd->urb, usb_dev,
usb_sndbulkpipe(usb_dev, epwrite->bEndpointAddress),
NULL, acm->writesize, acm_write_bulk, snd, epwrite->bInterval);
else
usb_fill_bulk_urb(snd->urb, usb_dev,
usb_sndbulkpipe(usb_dev, epwrite->bEndpointAddress),
NULL, acm->writesize, acm_write_bulk, snd);
snd->urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
snd->instance = acm;
}
usb_set_intfdata(intf, acm);
i = device_create_file(&intf->dev, &dev_attr_bmCapabilities);
if (i < 0)
goto alloc_fail7;
if (cfd) {
acm->country_codes = kmalloc(cfd->bLength - 4, GFP_KERNEL);
if (!acm->country_codes)
goto skip_countries;
acm->country_code_size = cfd->bLength - 4;
memcpy(acm->country_codes, (u8 *)&cfd->wCountyCode0,
cfd->bLength - 4);
acm->country_rel_date = cfd->iCountryCodeRelDate;
i = device_create_file(&intf->dev, &dev_attr_wCountryCodes);
if (i < 0) {
kfree(acm->country_codes);
acm->country_codes = NULL;
acm->country_code_size = 0;
goto skip_countries;
}
i = device_create_file(&intf->dev,
&dev_attr_iCountryCodeRelDate);
if (i < 0) {
device_remove_file(&intf->dev, &dev_attr_wCountryCodes);
kfree(acm->country_codes);
acm->country_codes = NULL;
acm->country_code_size = 0;
goto skip_countries;
}
}
skip_countries:
usb_fill_int_urb(acm->ctrlurb, usb_dev,
usb_rcvintpipe(usb_dev, epctrl->bEndpointAddress),
acm->ctrl_buffer, ctrlsize, acm_ctrl_irq, acm,
epctrl->bInterval ? epctrl->bInterval : 0xff);
acm->ctrlurb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
acm->ctrlurb->transfer_dma = acm->ctrl_dma;
dev_info(&intf->dev, "ttyACM%d: USB ACM device\n", minor);
acm_set_control(acm, acm->ctrlout);
acm->line.dwDTERate = cpu_to_le32(9600);
acm->line.bDataBits = 8;
acm_set_line(acm, &acm->line);
usb_driver_claim_interface(&acm_driver, data_interface, acm);
usb_set_intfdata(data_interface, acm);
usb_get_intf(control_interface);
tty_register_device(acm_tty_driver, minor, &control_interface->dev);
return 0;
alloc_fail7:
for (i = 0; i < ACM_NW; i++)
usb_free_urb(acm->wb[i].urb);
alloc_fail6:
for (i = 0; i < num_rx_buf; i++)
usb_free_urb(acm->read_urbs[i]);
acm_read_buffers_free(acm);
usb_free_urb(acm->ctrlurb);
alloc_fail5:
acm_write_buffers_free(acm);
alloc_fail4:
usb_free_coherent(usb_dev, ctrlsize, acm->ctrl_buffer, acm->ctrl_dma);
alloc_fail2:
acm_release_minor(acm);
kfree(acm);
alloc_fail:
return -ENOMEM;
}
/**
* gserial_setup - initialize TTY driver for one or more ports
* @g: gadget to associate with these ports
* @count: how many ports to support
* Context: may sleep
*
* The TTY stack needs to know in advance how many devices it should
* plan to manage. Use this call to set up the ports you will be
* exporting through USB. Later, connect them to functions based
* on what configuration is activated by the USB host; and disconnect
* them as appropriate.
*
* An example would be a two-configuration device in which both
* configurations expose port 0, but through different functions.
* One configuration could even expose port 1 while the other
* one doesn't.
*
* Returns negative errno or zero.
*/
int gserial_setup(struct usb_gadget *g, unsigned count)
{
unsigned i;
struct usb_cdc_line_coding coding;
int status;
if (count == 0 || count > N_PORTS)
return -EINVAL;
gs_tty_driver = alloc_tty_driver(count);
if (!gs_tty_driver)
return -ENOMEM;
gs_tty_driver->owner = THIS_MODULE;
gs_tty_driver->driver_name = "g_serial";
gs_tty_driver->name = PREFIX;
/* uses dynamically assigned dev_t values */
gs_tty_driver->type = TTY_DRIVER_TYPE_SERIAL;
gs_tty_driver->subtype = SERIAL_TYPE_NORMAL;
gs_tty_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV
| TTY_DRIVER_RESET_TERMIOS;
gs_tty_driver->init_termios = tty_std_termios;
/* 9600-8-N-1 ... matches defaults expected by "usbser.sys" on
* MS-Windows. Otherwise, most of these flags shouldn't affect
* anything unless we were to actually hook up to a serial line.
*/
gs_tty_driver->init_termios.c_cflag =
B9600 | CS8 | CREAD | HUPCL | CLOCAL;
gs_tty_driver->init_termios.c_ispeed = 9600;
gs_tty_driver->init_termios.c_ospeed = 9600;
coding.dwDTERate = cpu_to_le32(9600);
coding.bCharFormat = 8;
coding.bParityType = USB_CDC_NO_PARITY;
coding.bDataBits = USB_CDC_1_STOP_BITS;
tty_set_operations(gs_tty_driver, &gs_tty_ops);
gserial_wq = create_singlethread_workqueue("k_gserial");
if (!gserial_wq) {
status = -ENOMEM;
goto fail;
}
/* make devices be openable */
for (i = 0; i < count; i++) {
mutex_init(&ports[i].lock);
status = gs_port_alloc(i, &coding);
if (status) {
count = i;
goto fail;
}
}
n_ports = count;
/* export the driver ... */
status = tty_register_driver(gs_tty_driver);
if (status) {
put_tty_driver(gs_tty_driver);
pr_err("%s: cannot register, err %d\n",
__func__, status);
goto fail;
}
/* ... and sysfs class devices, so mdev/udev make /dev/ttyGS* */
for (i = 0; i < count; i++) {
struct device *tty_dev;
tty_dev = tty_register_device(gs_tty_driver, i, &g->dev);
if (IS_ERR(tty_dev))
pr_warning("%s: no classdev for port %d, err %ld\n",
__func__, i, PTR_ERR(tty_dev));
}
pr_debug("%s: registered %d ttyGS* device%s\n", __func__,
count, (count == 1) ? "" : "s");
return status;
fail:
while (count--)
kfree(ports[count].port);
destroy_workqueue(gserial_wq);
put_tty_driver(gs_tty_driver);
gs_tty_driver = NULL;
return status;
}
/**
* gserial_setup - initialize TTY driver for one or more ports
* @g: gadget to associate with these ports
* @count: how many ports to support
* Context: may sleep
*
* The TTY stack needs to know in advance how many devices it should
* plan to manage. Use this call to set up the ports you will be
* exporting through USB. Later, connect them to functions based
* on what configuration is activated by the USB host; and disconnect
* them as appropriate.
*
* An example would be a two-configuration device in which both
* configurations expose port 0, but through different functions.
* One configuration could even expose port 1 while the other
* one doesn't.
*
* Returns negative errno or zero.
*/
int gserial_setup(struct usb_gadget *g, unsigned count)
{
unsigned i;
struct usb_cdc_line_coding coding;
int status;
struct device *tty_dev;
if (count == 0 || count > ACM_TTY_COUNT)
return -EINVAL;
/* count:0 is init in the bsp_usb_console_init */
if (count > 1) {
gs_tty_driver = alloc_tty_driver(count-1);
if (!gs_tty_driver)
return -ENOMEM;
gs_tty_driver->driver_name = "g_serial";
gs_tty_driver->name = PREFIX;
/* uses dynamically assigned dev_t values */
gs_tty_driver->type = TTY_DRIVER_TYPE_SERIAL;
gs_tty_driver->subtype = SERIAL_TYPE_NORMAL;
gs_tty_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV;
gs_tty_driver->init_termios = tty_std_termios;
/* 9600-8-N-1 ... matches defaults expected by "usbser.sys" on
* MS-Windows. Otherwise, most of these flags shouldn't affect
* anything unless we were to actually hook up to a serial line.
*/
gs_tty_driver->init_termios.c_cflag =
B9600 | CS8 | CREAD | HUPCL | CLOCAL;
gs_tty_driver->init_termios.c_ispeed = 9600;
gs_tty_driver->init_termios.c_ospeed = 9600;
gs_tty_driver->num = 1;
coding.dwDTERate = cpu_to_le32(9600);
coding.bCharFormat = 8;
coding.bParityType = USB_CDC_NO_PARITY;
coding.bDataBits = USB_CDC_1_STOP_BITS;
tty_set_operations(gs_tty_driver, &gs_tty_ops);
/* export the driver ... */
status = tty_register_driver(gs_tty_driver);
if (status) {
pr_err("%s: cannot register, err %d\n",
__func__, status);
goto fail;
}
}
/* make devices be openable */
for (i = 1; i < count; i++) {
mutex_init(&ports[i].lock);
status = gs_port_alloc(i, &coding);
if (status) {
count = i;
goto fail;
}
}
n_ports = count;
/* 1. reg tty device for console tty */
tty_dev = tty_register_device(gs_console_tty_driver, 0, &g->dev);
if (IS_ERR(tty_dev))
pr_warning("%s: no classdev for port %d, err %ld\n",
__func__, 0, PTR_ERR(tty_dev));
/* 2. reg other tty ... */
/* ... and sysfs class devices, so mdev/udev make /dev/ttyGS* */
for (i = 1; i < count; i++) {
//struct device *tty_dev;
/* i-1 means index start from 0 */
tty_dev = tty_register_device(gs_tty_driver, i-1, &g->dev);
if (IS_ERR(tty_dev))
pr_warning("%s: no classdev for port %d, err %ld\n",
__func__, i, PTR_ERR(tty_dev));
}
pr_vdebug("%s: registered %d ttyGS* device%s\n", __func__,
count, (count == 1) ? "" : "s");
return status;/* [false alarm]:fortify disable */
fail:
/* never free console tty port */
while (count-- > 1)
kfree(ports[count].port);
put_tty_driver(gs_tty_driver);
gs_tty_driver = NULL;
return status;
}
static int acm_probe (struct usb_interface *intf,
const struct usb_device_id *id)
{
struct usb_cdc_union_desc *union_header = NULL;
struct usb_cdc_country_functional_desc *cfd = NULL;
char *buffer = intf->altsetting->extra;
int buflen = intf->altsetting->extralen;
struct usb_interface *control_interface;
struct usb_interface *data_interface;
struct usb_endpoint_descriptor *epctrl;
struct usb_endpoint_descriptor *epread;
struct usb_endpoint_descriptor *epwrite;
struct usb_device *usb_dev = interface_to_usbdev(intf);
struct acm *acm;
int minor;
int ctrlsize,readsize;
u8 *buf;
u8 ac_management_function = 0;
u8 call_management_function = 0;
int call_interface_num = -1;
int data_interface_num;
unsigned long quirks;
int num_rx_buf;
int i;
/* normal quirks */
quirks = (unsigned long)id->driver_info;
num_rx_buf = (quirks == SINGLE_RX_URB) ? 1 : ACM_NR;
/* handle quirks deadly to normal probing*/
if (quirks == NO_UNION_NORMAL) {
data_interface = usb_ifnum_to_if(usb_dev, 1);
control_interface = usb_ifnum_to_if(usb_dev, 0);
goto skip_normal_probe;
}
/* normal probing*/
if (!buffer) {
err("Wierd descriptor references\n");
return -EINVAL;
}
if (!buflen) {
if (intf->cur_altsetting->endpoint->extralen && intf->cur_altsetting->endpoint->extra) {
dev_dbg(&intf->dev,"Seeking extra descriptors on endpoint");
buflen = intf->cur_altsetting->endpoint->extralen;
buffer = intf->cur_altsetting->endpoint->extra;
} else {
err("Zero length descriptor references\n");
return -EINVAL;
}
}
while (buflen > 0) {
if (buffer [1] != USB_DT_CS_INTERFACE) {
err("skipping garbage\n");
goto next_desc;
}
switch (buffer [2]) {
case USB_CDC_UNION_TYPE: /* we've found it */
if (union_header) {
err("More than one union descriptor, skipping ...");
goto next_desc;
}
union_header = (struct usb_cdc_union_desc *)
buffer;
break;
case USB_CDC_COUNTRY_TYPE: /* export through sysfs*/
cfd = (struct usb_cdc_country_functional_desc *)buffer;
break;
case USB_CDC_HEADER_TYPE: /* maybe check version */
break; /* for now we ignore it */
case USB_CDC_ACM_TYPE:
ac_management_function = buffer[3];
break;
case USB_CDC_CALL_MANAGEMENT_TYPE:
call_management_function = buffer[3];
call_interface_num = buffer[4];
if ((call_management_function & 3) != 3)
err("This device cannot do calls on its own. It is no modem.");
break;
default:
err("Ignoring extra header, type %d, length %d", buffer[2], buffer[0]);
break;
}
next_desc:
buflen -= buffer[0];
buffer += buffer[0];
}
if (!union_header) {
if (call_interface_num > 0) {
dev_dbg(&intf->dev,"No union descriptor, using call management descriptor");
data_interface = usb_ifnum_to_if(usb_dev, (data_interface_num = call_interface_num));
control_interface = intf;
} else {
dev_dbg(&intf->dev,"No union descriptor, giving up");
return -ENODEV;
}
} else {
control_interface = usb_ifnum_to_if(usb_dev, union_header->bMasterInterface0);
data_interface = usb_ifnum_to_if(usb_dev, (data_interface_num = union_header->bSlaveInterface0));
if (!control_interface || !data_interface) {
dev_dbg(&intf->dev,"no interfaces");
return -ENODEV;
}
}
if (data_interface_num != call_interface_num)
dev_dbg(&intf->dev,"Seperate call control interface. That is not fully supported.");
skip_normal_probe:
/*workaround for switched interfaces */
if (data_interface->cur_altsetting->desc.bInterfaceClass != CDC_DATA_INTERFACE_TYPE) {
if (control_interface->cur_altsetting->desc.bInterfaceClass == CDC_DATA_INTERFACE_TYPE) {
struct usb_interface *t;
dev_dbg(&intf->dev,"Your device has switched interfaces.");
t = control_interface;
control_interface = data_interface;
data_interface = t;
} else {
return -EINVAL;
}
}
/* Accept probe requests only for the control interface */
if (intf != control_interface)
return -ENODEV;
if (usb_interface_claimed(data_interface)) { /* valid in this context */
dev_dbg(&intf->dev,"The data interface isn't available");
return -EBUSY;
}
if (data_interface->cur_altsetting->desc.bNumEndpoints < 2)
return -EINVAL;
epctrl = &control_interface->cur_altsetting->endpoint[0].desc;
epread = &data_interface->cur_altsetting->endpoint[0].desc;
epwrite = &data_interface->cur_altsetting->endpoint[1].desc;
/* workaround for switched endpoints */
if (!usb_endpoint_dir_in(epread)) {
/* descriptors are swapped */
struct usb_endpoint_descriptor *t;
dev_dbg(&intf->dev,"The data interface has switched endpoints");
t = epread;
epread = epwrite;
epwrite = t;
}
dbg("interfaces are valid");
for (minor = 0; minor < ACM_TTY_MINORS && acm_table[minor]; minor++);
if (minor == ACM_TTY_MINORS) {
err("no more free acm devices");
return -ENODEV;
}
if (!(acm = kzalloc(sizeof(struct acm), GFP_KERNEL))) {
dev_dbg(&intf->dev, "out of memory (acm kzalloc)");
goto alloc_fail;
}
ctrlsize = le16_to_cpu(epctrl->wMaxPacketSize);
readsize = le16_to_cpu(epread->wMaxPacketSize)* ( quirks == SINGLE_RX_URB ? 1 : 2);
acm->writesize = le16_to_cpu(epwrite->wMaxPacketSize);
acm->control = control_interface;
acm->data = data_interface;
acm->minor = minor;
acm->dev = usb_dev;
acm->ctrl_caps = ac_management_function;
acm->ctrlsize = ctrlsize;
acm->readsize = readsize;
acm->rx_buflimit = num_rx_buf;
acm->urb_task.func = acm_rx_tasklet;
acm->urb_task.data = (unsigned long) acm;
INIT_WORK(&acm->work, acm_softint);
spin_lock_init(&acm->throttle_lock);
spin_lock_init(&acm->write_lock);
spin_lock_init(&acm->read_lock);
acm->write_ready = 1;
acm->rx_endpoint = usb_rcvbulkpipe(usb_dev, epread->bEndpointAddress);
buf = usb_buffer_alloc(usb_dev, ctrlsize, GFP_KERNEL, &acm->ctrl_dma);
if (!buf) {
dev_dbg(&intf->dev, "out of memory (ctrl buffer alloc)");
goto alloc_fail2;
}
acm->ctrl_buffer = buf;
if (acm_write_buffers_alloc(acm) < 0) {
dev_dbg(&intf->dev, "out of memory (write buffer alloc)");
goto alloc_fail4;
}
acm->ctrlurb = usb_alloc_urb(0, GFP_KERNEL);
if (!acm->ctrlurb) {
dev_dbg(&intf->dev, "out of memory (ctrlurb kmalloc)");
goto alloc_fail5;
}
for (i = 0; i < num_rx_buf; i++) {
struct acm_ru *rcv = &(acm->ru[i]);
if (!(rcv->urb = usb_alloc_urb(0, GFP_KERNEL))) {
dev_dbg(&intf->dev, "out of memory (read urbs usb_alloc_urb)");
goto alloc_fail7;
}
rcv->urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
rcv->instance = acm;
}
for (i = 0; i < num_rx_buf; i++) {
struct acm_rb *buf = &(acm->rb[i]);
if (!(buf->base = usb_buffer_alloc(acm->dev, readsize, GFP_KERNEL, &buf->dma))) {
dev_dbg(&intf->dev, "out of memory (read bufs usb_buffer_alloc)");
goto alloc_fail7;
}
}
acm->writeurb = usb_alloc_urb(0, GFP_KERNEL);
if (!acm->writeurb) {
dev_dbg(&intf->dev, "out of memory (writeurb kmalloc)");
goto alloc_fail7;
}
usb_set_intfdata (intf, acm);
i = device_create_file(&intf->dev, &dev_attr_bmCapabilities);
if (i < 0)
goto alloc_fail8;
if (cfd) { /* export the country data */
acm->country_codes = kmalloc(cfd->bLength - 4, GFP_KERNEL);
if (!acm->country_codes)
goto skip_countries;
acm->country_code_size = cfd->bLength - 4;
memcpy(acm->country_codes, (u8 *)&cfd->wCountyCode0, cfd->bLength - 4);
acm->country_rel_date = cfd->iCountryCodeRelDate;
i = device_create_file(&intf->dev, &dev_attr_wCountryCodes);
if (i < 0) {
kfree(acm->country_codes);
goto skip_countries;
}
i = device_create_file(&intf->dev, &dev_attr_iCountryCodeRelDate);
if (i < 0) {
kfree(acm->country_codes);
goto skip_countries;
}
}
skip_countries:
usb_fill_int_urb(acm->ctrlurb, usb_dev, usb_rcvintpipe(usb_dev, epctrl->bEndpointAddress),
acm->ctrl_buffer, ctrlsize, acm_ctrl_irq, acm, epctrl->bInterval);
acm->ctrlurb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
acm->ctrlurb->transfer_dma = acm->ctrl_dma;
usb_fill_bulk_urb(acm->writeurb, usb_dev, usb_sndbulkpipe(usb_dev, epwrite->bEndpointAddress),
NULL, acm->writesize, acm_write_bulk, acm);
acm->writeurb->transfer_flags |= URB_NO_FSBR | URB_NO_TRANSFER_DMA_MAP;
dev_info(&intf->dev, "ttyACM%d: USB ACM device\n", minor);
acm_set_control(acm, acm->ctrlout);
acm->line.dwDTERate = cpu_to_le32(9600);
acm->line.bDataBits = 8;
acm_set_line(acm, &acm->line);
usb_driver_claim_interface(&acm_driver, data_interface, acm);
usb_get_intf(control_interface);
tty_register_device(acm_tty_driver, minor, &control_interface->dev);
acm_table[minor] = acm;
return 0;
alloc_fail8:
usb_free_urb(acm->writeurb);
alloc_fail7:
for (i = 0; i < num_rx_buf; i++)
usb_buffer_free(usb_dev, acm->readsize, acm->rb[i].base, acm->rb[i].dma);
for (i = 0; i < num_rx_buf; i++)
usb_free_urb(acm->ru[i].urb);
usb_free_urb(acm->ctrlurb);
alloc_fail5:
acm_write_buffers_free(acm);
alloc_fail4:
usb_buffer_free(usb_dev, ctrlsize, acm->ctrl_buffer, acm->ctrl_dma);
alloc_fail2:
kfree(acm);
alloc_fail:
return -ENOMEM;
}
static int __init smd_tty_init(void)
{
int ret;
int n;
int idx;
smd_tty_driver = alloc_tty_driver(MAX_SMD_TTYS);
if (smd_tty_driver == 0)
return -ENOMEM;
smd_tty_driver->owner = THIS_MODULE;
smd_tty_driver->driver_name = "smd_tty_driver";
smd_tty_driver->name = "smd";
smd_tty_driver->major = 0;
smd_tty_driver->minor_start = 0;
smd_tty_driver->type = TTY_DRIVER_TYPE_SERIAL;
smd_tty_driver->subtype = SERIAL_TYPE_NORMAL;
smd_tty_driver->init_termios = tty_std_termios;
smd_tty_driver->init_termios.c_iflag = 0;
smd_tty_driver->init_termios.c_oflag = 0;
smd_tty_driver->init_termios.c_cflag = B38400 | CS8 | CREAD;
smd_tty_driver->init_termios.c_lflag = 0;
smd_tty_driver->flags = TTY_DRIVER_RESET_TERMIOS |
TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV;
tty_set_operations(smd_tty_driver, &smd_tty_ops);
ret = tty_register_driver(smd_tty_driver);
if (ret) {
put_tty_driver(smd_tty_driver);
pr_err("%s: driver registration failed %d\n", __func__, ret);
return ret;
}
for (n = 0; n < ARRAY_SIZE(smd_configs); ++n) {
idx = smd_configs[n].tty_dev_index;
if (smd_configs[n].dev_name == NULL)
smd_configs[n].dev_name = smd_configs[n].port_name;
#if 0
if (idx == DS_IDX) {
/*
* DS port uses the kernel API starting with
* 8660 Fusion. Only register the userspace
* platform device for older targets.
*/
int legacy_ds = 0;
legacy_ds |= cpu_is_msm7x01() || cpu_is_msm7x25();
legacy_ds |= cpu_is_msm7x27() || cpu_is_msm7x30();
legacy_ds |= cpu_is_qsd8x50() || cpu_is_msm8x55();
/*
* use legacy mode for 8660 Standalone (subtype 0)
*/
legacy_ds |= cpu_is_msm8x60() &&
(socinfo_get_platform_subtype() == 0x0);
if (!legacy_ds)
continue;
}
#endif
tty_register_device(smd_tty_driver, idx, 0);
init_completion(&smd_tty[idx].ch_allocated);
/* register platform device */
smd_tty[idx].driver.probe = smd_tty_dummy_probe;
smd_tty[idx].driver.driver.name = smd_configs[n].dev_name;
smd_tty[idx].driver.driver.owner = THIS_MODULE;
spin_lock_init(&smd_tty[idx].reset_lock);
smd_tty[idx].is_open = 0;
setup_timer(&smd_tty[idx].buf_req_timer, buf_req_retry,
(unsigned long)&smd_tty[idx]);
init_waitqueue_head(&smd_tty[idx].ch_opened_wait_queue);
ret = platform_driver_register(&smd_tty[idx].driver);
if (ret) {
pr_err("%s: init failed %d (%d)\n", __func__, idx, ret);
smd_tty[idx].driver.probe = NULL;
goto out;
}
smd_tty[idx].smd = &smd_configs[n];
}
INIT_DELAYED_WORK(&loopback_work, loopback_probe_worker);
return 0;
out:
/* unregister platform devices */
for (n = 0; n < ARRAY_SIZE(smd_configs); ++n) {
idx = smd_configs[n].tty_dev_index;
if (smd_tty[idx].driver.probe) {
platform_driver_unregister(&smd_tty[idx].driver);
tty_unregister_device(smd_tty_driver, idx);
}
}
tty_unregister_driver(smd_tty_driver);
put_tty_driver(smd_tty_driver);
return ret;
}
static int __init lge_dm_tty_init(void)
{
int ret = 0;
struct device *tty_dev;
struct dm_tty *lge_dm_tty_drv;
#ifdef CONFIG_TTY_PORT
tty_port_init(&dm_tty_port);
#endif /* CONFIG_TTY_PORT */
pr_info(DM_TTY_MODULE_NAME ": %s\n", __func__);
if(lge_dm_tty != NULL)
{
lge_dm_tty_drv = lge_dm_tty;
}
else
{
lge_dm_tty_drv = kzalloc(sizeof(struct dm_tty), GFP_KERNEL);
if (lge_dm_tty_drv == NULL) {
pr_info(DM_TTY_MODULE_NAME "%s:"
"failed to allocate lge_dm_tty", __func__);
return 0;
}
lge_dm_tty = lge_dm_tty_drv;
}
lge_dm_tty_drv->tty_drv = alloc_tty_driver(MAX_DM_TTY_DRV);
if (!lge_dm_tty_drv->tty_drv) {
pr_info(DM_TTY_MODULE_NAME ": %s - tty_drv is NULL", __func__);
kfree(lge_dm_tty_drv);
return 0;
}
lge_dm_tty_drv->tty_drv->name = "lge_dm_tty";
lge_dm_tty_drv->tty_drv->owner = THIS_MODULE;
lge_dm_tty_drv->tty_drv->driver_name = "lge_dm_tty";
/* uses dynamically assigned dev_t values */
lge_dm_tty_drv->tty_drv->type = TTY_DRIVER_TYPE_SERIAL;
lge_dm_tty_drv->tty_drv->subtype = SERIAL_TYPE_NORMAL;
lge_dm_tty_drv->tty_drv->flags = TTY_DRIVER_REAL_RAW
| TTY_DRIVER_DYNAMIC_DEV
| TTY_DRIVER_RESET_TERMIOS;
/* initializing the tty driver */
lge_dm_tty_drv->tty_drv->init_termios = tty_std_termios;
lge_dm_tty_drv->tty_drv->init_termios.c_iflag = IGNBRK | IGNPAR;
lge_dm_tty_drv->tty_drv->init_termios.c_oflag = 0;
lge_dm_tty_drv->tty_drv->init_termios.c_cflag =
B9600 | CS8 | CREAD | HUPCL | CLOCAL;
lge_dm_tty_drv->tty_drv->init_termios.c_lflag = 0;
tty_set_operations(lge_dm_tty_drv->tty_drv, &lge_dm_tty_ops);
#ifdef CONFIG_TTY_PORT
tty_port_link_device(&dm_tty_port, lge_dm_tty_drv->tty_drv, 0);
#endif /* CONFIG_TTY_PORT */
ret = tty_register_driver(lge_dm_tty_drv->tty_drv);
if (ret) {
put_tty_driver(lge_dm_tty_drv->tty_drv);
#ifdef CONFIG_TTY_PORT
tty_port_destroy(&dm_tty_port);
#endif /* CONFIG_TTY_PORT */
pr_info(DM_TTY_MODULE_NAME ": %s:"
"tty_register_driver() ""failed\n",
__func__);
lge_dm_tty_drv->tty_drv = NULL;
kfree(lge_dm_tty_drv);
return 0;
}
tty_dev = tty_register_device(lge_dm_tty_drv->tty_drv, 0, NULL);
if (IS_ERR(tty_dev)) {
pr_info(DM_TTY_MODULE_NAME ": %s:"
"tty_register_device() " "failed\n",
__func__);
tty_unregister_driver(lge_dm_tty_drv->tty_drv);
put_tty_driver(lge_dm_tty_drv->tty_drv);
#ifdef CONFIG_TTY_PORT
tty_port_destroy(&dm_tty_port);
#endif /* CONFIG_TTY_PORT */
kfree(lge_dm_tty_drv);
return 0;
}
init_waitqueue_head(&lge_dm_tty_drv->waitq);
lge_dm_tty_drv->tty_state = DM_TTY_REGISTERED;
/* data initialization */
dm_modem_response = kzalloc(DM_TTY_TX_MAX_PACKET_SIZE, GFP_KERNEL);
if (dm_modem_response == NULL)
pr_info(DM_TTY_MODULE_NAME ": %s: dm_modem_response ""failed\n",
__func__);
dm_modem_request = kzalloc(DM_TTY_RX_MAX_PACKET_SIZE, GFP_KERNEL);
if (dm_modem_request == NULL)
pr_info(DM_TTY_MODULE_NAME ": %s: dm_modem_request ""failed\n",
__func__);
dm_modem_response_header_length = sizeof(struct dm_router_header);
dm_modem_response_header = kzalloc(dm_modem_response_header_length,
GFP_KERNEL);
if (dm_modem_response_header == NULL)
pr_info(DM_TTY_MODULE_NAME ": %s: dm_modem_response_header "
"failed\n", __func__);
dm_modem_request_header_length = sizeof(struct dm_router_header);
dm_modem_request_header = kzalloc(dm_modem_request_header_length,
GFP_KERNEL);
if (dm_modem_request_header == NULL)
pr_info(DM_TTY_MODULE_NAME ": %s: dm_modem_request_header "
"failed\n", __func__);
dm_modem_response_body_length =
sizeof(struct dm_router_modem_response_body);
dm_modem_response_body = kzalloc(dm_modem_response_body_length,
GFP_KERNEL);
if (dm_modem_response_body == NULL)
pr_info(DM_TTY_MODULE_NAME ": %s: dm_modem_response_body "
"failed\n", __func__);
return 0;
}
static int acm_probe(struct usb_interface *intf,
const struct usb_device_id *id)
{
struct usb_cdc_union_desc *union_header = NULL;
struct usb_cdc_country_functional_desc *cfd = NULL;
unsigned char *buffer = intf->altsetting->extra;
int buflen = intf->altsetting->extralen;
struct usb_interface *control_interface;
struct usb_interface *data_interface;
struct usb_endpoint_descriptor *epctrl = NULL;
struct usb_endpoint_descriptor *epread = NULL;
struct usb_endpoint_descriptor *epwrite = NULL;
struct usb_device *usb_dev = interface_to_usbdev(intf);
struct acm *acm;
int minor;
int ctrlsize, readsize;
u8 *buf;
u8 ac_management_function = 0;
u8 call_management_function = 0;
int call_interface_num = -1;
int data_interface_num;
unsigned long quirks;
int num_rx_buf;
int i;
int combined_interfaces = 0;
/* normal quirks */
quirks = (unsigned long)id->driver_info;
num_rx_buf = (quirks == SINGLE_RX_URB) ? 1 : ACM_NR;
/* handle quirks deadly to normal probing*/
if (quirks == NO_UNION_NORMAL) {
data_interface = usb_ifnum_to_if(usb_dev, 1);
control_interface = usb_ifnum_to_if(usb_dev, 0);
goto skip_normal_probe;
}
/* normal probing*/
if (!buffer) {
dev_err(&intf->dev, "Weird descriptor references\n");
return -EINVAL;
}
if (!buflen) {
if (intf->cur_altsetting->endpoint->extralen &&
intf->cur_altsetting->endpoint->extra) {
dev_dbg(&intf->dev,
"Seeking extra descriptors on endpoint\n");
buflen = intf->cur_altsetting->endpoint->extralen;
buffer = intf->cur_altsetting->endpoint->extra;
} else {
dev_err(&intf->dev,
"Zero length descriptor references\n");
return -EINVAL;
}
}
while (buflen > 0) {
if (buffer[1] != USB_DT_CS_INTERFACE) {
dev_err(&intf->dev, "skipping garbage\n");
goto next_desc;
}
switch (buffer[2]) {
case USB_CDC_UNION_TYPE: /* we've found it */
if (union_header) {
dev_err(&intf->dev, "More than one "
"union descriptor, skipping ...\n");
goto next_desc;
}
union_header = (struct usb_cdc_union_desc *)buffer;
break;
case USB_CDC_COUNTRY_TYPE: /* export through sysfs*/
cfd = (struct usb_cdc_country_functional_desc *)buffer;
break;
case USB_CDC_HEADER_TYPE: /* maybe check version */
break; /* for now we ignore it */
case USB_CDC_ACM_TYPE:
ac_management_function = buffer[3];
break;
case USB_CDC_CALL_MANAGEMENT_TYPE:
call_management_function = buffer[3];
call_interface_num = buffer[4];
if ((call_management_function & 3) != 3)
dev_err(&intf->dev, "This device cannot do calls on its own. It is not a modem.\n");
break;
default:
/* there are LOTS more CDC descriptors that
* could legitimately be found here.
*/
dev_dbg(&intf->dev, "Ignoring descriptor: "
"type %02x, length %d\n",
buffer[2], buffer[0]);
break;
}
next_desc:
buflen -= buffer[0];
buffer += buffer[0];
}
if (!union_header) {
if (call_interface_num > 0) {
dev_dbg(&intf->dev, "No union descriptor, using call management descriptor\n");
data_interface = usb_ifnum_to_if(usb_dev, (data_interface_num = call_interface_num));
control_interface = intf;
} else {
if (intf->cur_altsetting->desc.bNumEndpoints != 3) {
dev_dbg(&intf->dev,"No union descriptor, giving up\n");
return -ENODEV;
} else {
dev_warn(&intf->dev,"No union descriptor, testing for castrated device\n");
combined_interfaces = 1;
control_interface = data_interface = intf;
goto look_for_collapsed_interface;
}
}
} else {
control_interface = usb_ifnum_to_if(usb_dev, union_header->bMasterInterface0);
data_interface = usb_ifnum_to_if(usb_dev, (data_interface_num = union_header->bSlaveInterface0));
if (!control_interface || !data_interface) {
dev_dbg(&intf->dev, "no interfaces\n");
return -ENODEV;
}
}
if (data_interface_num != call_interface_num)
dev_dbg(&intf->dev, "Separate call control interface. That is not fully supported.\n");
if (control_interface == data_interface) {
/* some broken devices designed for windows work this way */
dev_warn(&intf->dev,"Control and data interfaces are not separated!\n");
combined_interfaces = 1;
/* a popular other OS doesn't use it */
quirks |= NO_CAP_LINE;
if (data_interface->cur_altsetting->desc.bNumEndpoints != 3) {
dev_err(&intf->dev, "This needs exactly 3 endpoints\n");
return -EINVAL;
}
look_for_collapsed_interface:
for (i = 0; i < 3; i++) {
struct usb_endpoint_descriptor *ep;
ep = &data_interface->cur_altsetting->endpoint[i].desc;
if (usb_endpoint_is_int_in(ep))
epctrl = ep;
else if (usb_endpoint_is_bulk_out(ep))
epwrite = ep;
else if (usb_endpoint_is_bulk_in(ep))
epread = ep;
else
return -EINVAL;
}
if (!epctrl || !epread || !epwrite)
return -ENODEV;
else
goto made_compressed_probe;
}
skip_normal_probe:
/*workaround for switched interfaces */
if (data_interface->cur_altsetting->desc.bInterfaceClass
!= CDC_DATA_INTERFACE_TYPE) {
if (control_interface->cur_altsetting->desc.bInterfaceClass
== CDC_DATA_INTERFACE_TYPE) {
struct usb_interface *t;
dev_dbg(&intf->dev,
"Your device has switched interfaces.\n");
t = control_interface;
control_interface = data_interface;
data_interface = t;
} else {
return -EINVAL;
}
}
/* Accept probe requests only for the control interface */
if (!combined_interfaces && intf != control_interface)
return -ENODEV;
if (!combined_interfaces && usb_interface_claimed(data_interface)) {
/* valid in this context */
dev_dbg(&intf->dev, "The data interface isn't available\n");
return -EBUSY;
}
if (data_interface->cur_altsetting->desc.bNumEndpoints < 2)
return -EINVAL;
epctrl = &control_interface->cur_altsetting->endpoint[0].desc;
epread = &data_interface->cur_altsetting->endpoint[0].desc;
epwrite = &data_interface->cur_altsetting->endpoint[1].desc;
/* workaround for switched endpoints */
if (!usb_endpoint_dir_in(epread)) {
/* descriptors are swapped */
struct usb_endpoint_descriptor *t;
dev_dbg(&intf->dev,
"The data interface has switched endpoints\n");
t = epread;
epread = epwrite;
epwrite = t;
}
made_compressed_probe:
dbg("interfaces are valid");
for (minor = 0; minor < ACM_TTY_MINORS && acm_table[minor]; minor++);
if (minor == ACM_TTY_MINORS) {
dev_err(&intf->dev, "no more free acm devices\n");
return -ENODEV;
}
acm = kzalloc(sizeof(struct acm), GFP_KERNEL);
if (acm == NULL) {
dev_dbg(&intf->dev, "out of memory (acm kzalloc)\n");
goto alloc_fail;
}
ctrlsize = le16_to_cpu(epctrl->wMaxPacketSize);
readsize = le16_to_cpu(epread->wMaxPacketSize) *
(quirks == SINGLE_RX_URB ? 1 : 2);
acm->combined_interfaces = combined_interfaces;
acm->writesize = le16_to_cpu(epwrite->wMaxPacketSize) * 20;
acm->control = control_interface;
acm->data = data_interface;
acm->minor = minor;
acm->dev = usb_dev;
acm->ctrl_caps = ac_management_function;
if (quirks & NO_CAP_LINE)
acm->ctrl_caps &= ~USB_CDC_CAP_LINE;
acm->ctrlsize = ctrlsize;
acm->readsize = readsize;
acm->rx_buflimit = num_rx_buf;
acm->urb_task.func = acm_rx_tasklet;
acm->urb_task.data = (unsigned long) acm;
INIT_WORK(&acm->work, acm_softint);
INIT_WORK(&acm->waker, acm_waker);
init_waitqueue_head(&acm->drain_wait);
spin_lock_init(&acm->throttle_lock);
spin_lock_init(&acm->write_lock);
spin_lock_init(&acm->read_lock);
mutex_init(&acm->mutex);
acm->rx_endpoint = usb_rcvbulkpipe(usb_dev, epread->bEndpointAddress);
acm->is_int_ep = usb_endpoint_xfer_int(epread);
if (acm->is_int_ep)
acm->bInterval = epread->bInterval;
tty_port_init(&acm->port);
acm->port.ops = &acm_port_ops;
buf = usb_buffer_alloc(usb_dev, ctrlsize, GFP_KERNEL, &acm->ctrl_dma);
if (!buf) {
dev_dbg(&intf->dev, "out of memory (ctrl buffer alloc)\n");
goto alloc_fail2;
}
acm->ctrl_buffer = buf;
if (acm_write_buffers_alloc(acm) < 0) {
dev_dbg(&intf->dev, "out of memory (write buffer alloc)\n");
goto alloc_fail4;
}
acm->ctrlurb = usb_alloc_urb(0, GFP_KERNEL);
if (!acm->ctrlurb) {
dev_dbg(&intf->dev, "out of memory (ctrlurb kmalloc)\n");
goto alloc_fail5;
}
for (i = 0; i < num_rx_buf; i++) {
struct acm_ru *rcv = &(acm->ru[i]);
rcv->urb = usb_alloc_urb(0, GFP_KERNEL);
if (rcv->urb == NULL) {
dev_dbg(&intf->dev,
"out of memory (read urbs usb_alloc_urb)\n");
goto alloc_fail7;
}
rcv->urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
rcv->instance = acm;
}
for (i = 0; i < num_rx_buf; i++) {
struct acm_rb *rb = &(acm->rb[i]);
rb->base = usb_buffer_alloc(acm->dev, readsize,
GFP_KERNEL, &rb->dma);
if (!rb->base) {
dev_dbg(&intf->dev,
"out of memory (read bufs usb_buffer_alloc)\n");
goto alloc_fail7;
}
}
for (i = 0; i < ACM_NW; i++) {
struct acm_wb *snd = &(acm->wb[i]);
snd->urb = usb_alloc_urb(0, GFP_KERNEL);
if (snd->urb == NULL) {
dev_dbg(&intf->dev,
"out of memory (write urbs usb_alloc_urb)");
goto alloc_fail7;
}
if (usb_endpoint_xfer_int(epwrite))
usb_fill_int_urb(snd->urb, usb_dev,
usb_sndbulkpipe(usb_dev, epwrite->bEndpointAddress),
NULL, acm->writesize, acm_write_bulk, snd, epwrite->bInterval);
else
usb_fill_bulk_urb(snd->urb, usb_dev,
usb_sndbulkpipe(usb_dev, epwrite->bEndpointAddress),
NULL, acm->writesize, acm_write_bulk, snd);
snd->urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
snd->instance = acm;
}
usb_set_intfdata(intf, acm);
i = device_create_file(&intf->dev, &dev_attr_bmCapabilities);
if (i < 0)
goto alloc_fail8;
if (cfd) { /* export the country data */
acm->country_codes = kmalloc(cfd->bLength - 4, GFP_KERNEL);
if (!acm->country_codes)
goto skip_countries;
acm->country_code_size = cfd->bLength - 4;
memcpy(acm->country_codes, (u8 *)&cfd->wCountyCode0,
cfd->bLength - 4);
acm->country_rel_date = cfd->iCountryCodeRelDate;
i = device_create_file(&intf->dev, &dev_attr_wCountryCodes);
if (i < 0) {
kfree(acm->country_codes);
goto skip_countries;
}
i = device_create_file(&intf->dev,
&dev_attr_iCountryCodeRelDate);
if (i < 0) {
kfree(acm->country_codes);
goto skip_countries;
}
}
skip_countries:
usb_fill_int_urb(acm->ctrlurb, usb_dev,
usb_rcvintpipe(usb_dev, epctrl->bEndpointAddress),
acm->ctrl_buffer, ctrlsize, acm_ctrl_irq, acm,
/* works around buggy devices */
epctrl->bInterval ? epctrl->bInterval : 0xff);
acm->ctrlurb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
acm->ctrlurb->transfer_dma = acm->ctrl_dma;
dev_info(&intf->dev, "ttyACM%d: USB ACM device\n", minor);
acm_set_control(acm, acm->ctrlout);
acm->line.dwDTERate = cpu_to_le32(9600);
acm->line.bDataBits = 8;
acm_set_line(acm, &acm->line);
usb_driver_claim_interface(&acm_driver, data_interface, acm);
usb_set_intfdata(data_interface, acm);
usb_get_intf(control_interface);
tty_register_device(acm_tty_driver, minor, &control_interface->dev);
acm_table[minor] = acm;
return 0;
alloc_fail8:
for (i = 0; i < ACM_NW; i++)
usb_free_urb(acm->wb[i].urb);
alloc_fail7:
acm_read_buffers_free(acm);
for (i = 0; i < num_rx_buf; i++)
usb_free_urb(acm->ru[i].urb);
usb_free_urb(acm->ctrlurb);
alloc_fail5:
acm_write_buffers_free(acm);
alloc_fail4:
usb_buffer_free(usb_dev, ctrlsize, acm->ctrl_buffer, acm->ctrl_dma);
alloc_fail2:
kfree(acm);
alloc_fail:
return -ENOMEM;
}
static int __init spi_tty_init(void)
{
int retval;
struct spi_tty_s *spi_tty;
SPI_IPC_INFO("%s\n", __func__);
tx_size = 0L;
tx_time = 0L;
tx_count = 0L;
write_count = 0L;
spi_tty_gbl = kmalloc(sizeof(*spi_tty), GFP_KERNEL);
if (spi_tty_gbl == NULL) {
pr_err("%s: Cannot malloc mem!\n", __func__);
return -ENOMEM;
}
memset(spi_tty_gbl, 0x0, sizeof(*spi_tty));
spi_tty = spi_tty_gbl;
spi_tty->write_buf = spi_tty_buf_alloc();
if (!spi_tty->write_buf) {
kfree(spi_tty_gbl);
pr_err("failed to malloc spi_tty write buf!\n");
return -ENOMEM;
}
spi_tty->throttle = 0;
spi_tty->open_count = 0;
spi_tty->tx_null = 0;
spin_lock_init(&spi_tty->port_lock);
mutex_init(&spi_tty->work_lock);
INIT_WORK(&spi_tty->write_work, spi_tty_write_worker);
wake_lock_init(&spi_tty->wakelock, WAKE_LOCK_SUSPEND, "spi_tty_wakelock");
init_waitqueue_head(&spi_tty->write_wait);
spi_tty->write_buf_full = 0;
spi_tty->work_queue = create_singlethread_workqueue("spi_tty_wq");
if (spi_tty->work_queue == NULL) {
kfree(spi_tty);
kfree(spi_big_trans.tx_buf);
pr_err("Failed to create work queue\n");
return -ESRCH;
}
spi_message_init(&spi_big_msg);
spi_big_trans.tx_buf = kmalloc(SPI_TRANSACTION_LEN*2, GFP_KERNEL);
if (!spi_big_trans.tx_buf) {
kfree(spi_tty);
pr_err("%s: Cannot malloc mem!\n", __func__);
return -ENOMEM;
}
spi_big_trans.rx_buf =
(char*)spi_big_trans.tx_buf + SPI_TRANSACTION_LEN;
spi_message_add_tail(&spi_big_trans, &spi_big_msg);
spi_tty_driver = alloc_tty_driver(SPI_TTY_MINORS);
if (!spi_tty_driver)
return -ENOMEM;
spi_tty_driver->owner = THIS_MODULE;
spi_tty_driver->driver_name = "spi_modem";
spi_tty_driver->name = "ttySPI";
spi_tty_driver->major = SPI_TTY_MAJOR;
spi_tty_driver->type = TTY_DRIVER_TYPE_SERIAL;
spi_tty_driver->subtype = SERIAL_TYPE_NORMAL;
spi_tty_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV;
spi_tty_driver->init_termios = tty_std_termios;
spi_tty_driver->init_termios.c_cflag =
B9600 | CS8 | CREAD | HUPCL | CLOCAL;
tty_set_operations(spi_tty_driver, &serial_ops);
retval = tty_register_driver(spi_tty_driver);
if (retval) {
pr_err("failed to register spi_tty tty driver");
put_tty_driver(spi_tty_driver);
return retval;
}
tty_register_device(spi_tty_driver, 0, NULL);
/*
* If spi_tty_register_device() was called before spi_tty_init(), fill
* in the blanks. Yeah, it's ugly.
*/
if (spi_tty_dev)
spi_tty_dev->callback_context = spi_tty;
return retval;
}
static int __init lge_tty_atcmd_init(void)
{
int ret;
printk(KERN_INFO"%s: initialize atcmd-ttys\n", __func__);
/* allocate and initialize downstream buffers */
down_stream_buffer.buf_addr = kmalloc(BUF_SIZE, GFP_KERNEL);
if (down_stream_buffer.buf_addr == NULL)
goto down_stream_buf_alloc_error;
down_stream_buffer.head = 0;
down_stream_buffer.tail = 0;
down_stream_buffer.fifo_mask = BUF_SIZE - 1;
down_stream_buffer.size = BUF_SIZE;
down_stream_buffer.count = 0;
down_stream_buffer.lock = &atcmd_ds_buf_lock;
/* allocate and initialize upstream buffers */
up_stream_buffer.buf_addr = kmalloc(BUF_SIZE, GFP_KERNEL);
if (up_stream_buffer.buf_addr == NULL)
goto up_stream_buf_alloc_error;
up_stream_buffer.head = 0;
up_stream_buffer.tail = 0;
up_stream_buffer.fifo_mask = BUF_SIZE - 1;
up_stream_buffer.size = BUF_SIZE;
up_stream_buffer.count = 0;
up_stream_buffer.lock = &atcmd_us_buf_lock;
/* allocate tty driver */
atcmd_tty_driver = alloc_tty_driver(MAX_ATCMD_TTYS);
if (atcmd_tty_driver == 0)
goto tty_alloc_error;
/* setting tty */
atcmd_tty_driver->owner = THIS_MODULE;
atcmd_tty_driver->driver_name = "atcmd-tty-driver";
atcmd_tty_driver->name = "atcmd-tty";
atcmd_tty_driver->major = 0;
atcmd_tty_driver->minor_start = 0;
atcmd_tty_driver->type = TTY_DRIVER_TYPE_SERIAL;
atcmd_tty_driver->subtype = SERIAL_TYPE_NORMAL;
atcmd_tty_driver->init_termios = tty_std_termios;
atcmd_tty_driver->init_termios.c_iflag = 0;
atcmd_tty_driver->init_termios.c_oflag = 0;
atcmd_tty_driver->init_termios.c_cflag = B38400 | CS8 | CREAD;
atcmd_tty_driver->init_termios.c_lflag = 0;
atcmd_tty_driver->flags = TTY_DRIVER_RESET_TERMIOS |
TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV;
tty_set_operations(atcmd_tty_driver, &atcmd_tty_ops);
ret = tty_register_driver(atcmd_tty_driver);
if (ret)
return ret;
/* this should be dynamic */
tty_register_device(atcmd_tty_driver, 0, 0);
tty_register_device(atcmd_tty_driver, 1, 0);
return 0;
tty_alloc_error:
kfree(up_stream_buffer.buf_addr);
up_stream_buf_alloc_error:
kfree(down_stream_buffer.buf_addr);
down_stream_buf_alloc_error:
return -ENOMEM;
}
static int __init hsic_tty_init(void)
{
int ret;
int n;
unsigned port_num;
pr_debug("%s\n", __func__);
hsic_tty_driver = alloc_tty_driver(MAX_HSIC_TTYS);
if (hsic_tty_driver == 0)
return -ENOMEM;
hsic_tty_driver->owner = THIS_MODULE;
hsic_tty_driver->driver_name = "hsic_tty_driver";
hsic_tty_driver->name = "hsic";
hsic_tty_driver->major = 0;
hsic_tty_driver->minor_start = 0;
hsic_tty_driver->type = TTY_DRIVER_TYPE_SERIAL;
hsic_tty_driver->subtype = SERIAL_TYPE_NORMAL;
hsic_tty_driver->init_termios = tty_std_termios;
hsic_tty_driver->init_termios.c_iflag = 0;
hsic_tty_driver->init_termios.c_oflag = 0;
hsic_tty_driver->init_termios.c_cflag = B38400 | CS8 | CREAD;
hsic_tty_driver->init_termios.c_lflag = 0;
hsic_tty_driver->flags = TTY_DRIVER_RESET_TERMIOS |
TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV;
tty_set_operations(hsic_tty_driver, &hsic_tty_ops);
ret = tty_register_driver(hsic_tty_driver);
if (ret) {
put_tty_driver(hsic_tty_driver);
pr_err("%s: driver registration failed %d\n", __func__, ret);
return ret;
}
port_num = hsic_tty_data_setup(1, HSIC_TTY_SERIAL);
if (port_num < 0)
{
pr_err("%s: hsic_tty_data_setup failed\n", __func__);
goto out;
}
ret = hsic_tty_ctrl_setup(1, HSIC_TTY_SERIAL);
if (ret < 0)
{
pr_err("%s: hsic_tty_ctrl_setup failed\n", __func__);
goto out;
}
hsic_tty.client_port_num = port_num;
#ifdef CONFIG_MODEM_SUPPORT
spin_lock_init(&hsic_tty.lock);
spin_lock_init(&hsic_tty.reset_lock);
hsic_tty.connect = hsic_tty_connect;
hsic_tty.get_dtr = hsic_tty_get_dtr;
hsic_tty.get_rts = hsic_tty_get_rts;
hsic_tty.send_carrier_detect = hsic_tty_send_carrier_detect;
hsic_tty.send_ring_indicator = hsic_tty_send_ring_indicator;
hsic_tty.send_modem_ctrl_bits = hsic_tty_send_modem_ctrl_bits;
hsic_tty.disconnect = hsic_tty_disconnect;
hsic_tty.send_break = hsic_tty_send_break;;
#endif
hsic_tty.tty = NULL;
ret = hsic_tty_ctrl_connect(&hsic_tty, port_num);
if (ret) {
pr_err("%s: hsic_tty_ctrl_connect failed: err:%d\n",
__func__, ret);
goto out;
}
ret = hsic_tty_data_connect(&hsic_tty, port_num);
if (ret) {
pr_err("%s: hsic_tty_data_connect failed: err:%d\n",
__func__, ret);
hsic_tty_ctrl_disconnect(&hsic_tty, port_num);
goto out;
}
for (n = 0; n < MAX_HSIC_TTYS; ++n)
{
pr_info("%s: %d\n", __func__, n);
tty_register_device(hsic_tty_driver, n, 0);
}
return 0;
out:
tty_unregister_driver(hsic_tty_driver);
put_tty_driver(hsic_tty_driver);
return ret;
}
