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usb: irda: cleanup on ir-usb module

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General cleanup on ir-usb module. Introduced
a common header that could be used also on
usb gadget framework.

Lot's of cleanups and now using macros from the header
file.

Signed-off-by: Felipe Balbi <me@felipebalbi.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Felipe Balbi 2008-06-03 14:47:52 +03:00 committed by Greg Kroah-Hartman
parent b963801164
commit e0d795e4f3
2 changed files with 412 additions and 211 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

456
drivers/usb/serial/ir-usb.c
View file

@ -19,7 +19,12 @@
* was written by Roman Weissgaerber <weissg@vienna.at>, Dag Brattli * was written by Roman Weissgaerber <weissg@vienna.at>, Dag Brattli
* <dag@brattli.net>, and Jean Tourrilhes <jt@hpl.hp.com> * <dag@brattli.net>, and Jean Tourrilhes <jt@hpl.hp.com>
* *
* See Documentation/usb/usb-serial.txt for more information on using this driver * See Documentation/usb/usb-serial.txt for more information on using this
* driver
*
* 2008_Jun_02 Felipe Balbi <me@felipebalbi.com>
* Introduced common header to be used also in USB Gadget Framework.
* Still needs some other style fixes.
* *
* 2007_Jun_21 Alan Cox <alan@redhat.com> * 2007_Jun_21 Alan Cox <alan@redhat.com>
* Minimal cleanups for some of the driver problens and tty layer abuse. * Minimal cleanups for some of the driver problens and tty layer abuse.
@ -59,9 +64,10 @@
#include <linux/tty_flip.h> #include <linux/tty_flip.h>
#include <linux/module.h> #include <linux/module.h>
#include <linux/spinlock.h> #include <linux/spinlock.h>
#include <asm/uaccess.h> #include <linux/uaccess.h>
#include <linux/usb.h> #include <linux/usb.h>
#include <linux/usb/serial.h> #include <linux/usb/serial.h>
#include <linux/usb/irda.h>
/* /*
* Version Information * Version Information
@ -70,100 +76,75 @@
#define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com>" #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com>"
#define DRIVER_DESC "USB IR Dongle driver" #define DRIVER_DESC "USB IR Dongle driver"
/* USB IrDA class spec information */
#define USB_CLASS_IRDA 0x02
#define USB_DT_IRDA 0x21
#define IU_REQ_GET_CLASS_DESC 0x06
#define SPEED_2400 0x01
#define SPEED_9600 0x02
#define SPEED_19200 0x03
#define SPEED_38400 0x04
#define SPEED_57600 0x05
#define SPEED_115200 0x06
#define SPEED_576000 0x07
#define SPEED_1152000 0x08
#define SPEED_4000000 0x09
struct irda_class_desc {
u8 bLength;
u8 bDescriptorType;
u16 bcdSpecRevision;
u8 bmDataSize;
u8 bmWindowSize;
u8 bmMinTurnaroundTime;
u16 wBaudRate;
u8 bmAdditionalBOFs;
u8 bIrdaRateSniff;
u8 bMaxUnicastList;
} __attribute__ ((packed));
static int debug; static int debug;
/* if overridden by the user, then use their value for the size of the read and /* if overridden by the user, then use their value for the size of the read and
* write urbs */ * write urbs */
static int buffer_size; static int buffer_size;
/* if overridden by the user, then use the specified number of XBOFs */ /* if overridden by the user, then use the specified number of XBOFs */
static int xbof = -1; static int xbof = -1;
static int ir_startup (struct usb_serial *serial); static int ir_startup(struct usb_serial *serial);
static int ir_open (struct usb_serial_port *port, struct file *filep); static int ir_open(struct usb_serial_port *port, struct file *filep);
static void ir_close (struct usb_serial_port *port, struct file *filep); static void ir_close(struct usb_serial_port *port, struct file *filep);
static int ir_write (struct usb_serial_port *port, const unsigned char *buf, int count); static int ir_write(struct usb_serial_port *port,
static void ir_write_bulk_callback (struct urb *urb); const unsigned char *buf, int count);
static void ir_read_bulk_callback (struct urb *urb); static void ir_write_bulk_callback(struct urb *urb);
static void ir_set_termios (struct usb_serial_port *port, struct ktermios *old_termios); static void ir_read_bulk_callback(struct urb *urb);
static void ir_set_termios(struct usb_serial_port *port,
struct ktermios *old_termios);
/* Not that this lot means you can only have one per system */ /* Not that this lot means you can only have one per system */
static u8 ir_baud = 0; static u8 ir_baud;
static u8 ir_xbof = 0; static u8 ir_xbof;
static u8 ir_add_bof = 0; static u8 ir_add_bof;
static struct usb_device_id id_table [] = { static struct usb_device_id ir_id_table[] = {
{ USB_DEVICE(0x050f, 0x0180) }, /* KC Technology, KC-180 */ { USB_DEVICE(0x050f, 0x0180) }, /* KC Technology, KC-180 */
{ USB_DEVICE(0x08e9, 0x0100) }, /* XTNDAccess */ { USB_DEVICE(0x08e9, 0x0100) }, /* XTNDAccess */
{ USB_DEVICE(0x09c4, 0x0011) }, /* ACTiSys ACT-IR2000U */ { USB_DEVICE(0x09c4, 0x0011) }, /* ACTiSys ACT-IR2000U */
{ USB_INTERFACE_INFO (USB_CLASS_APP_SPEC, USB_CLASS_IRDA, 0) }, { USB_INTERFACE_INFO(USB_CLASS_APP_SPEC, USB_SUBCLASS_IRDA, 0) },
{ } /* Terminating entry */ { } /* Terminating entry */
}; };
MODULE_DEVICE_TABLE (usb, id_table); MODULE_DEVICE_TABLE(usb, ir_id_table);
static struct usb_driver ir_driver = { static struct usb_driver ir_driver = {
.name = "ir-usb", .name = "ir-usb",
.probe = usb_serial_probe, .probe = usb_serial_probe,
.disconnect = usb_serial_disconnect, .disconnect = usb_serial_disconnect,
.id_table = id_table, .id_table = ir_id_table,
.no_dynamic_id = 1, .no_dynamic_id = 1,
}; };
static struct usb_serial_driver ir_device = { static struct usb_serial_driver ir_device = {
.driver = { .driver = {
.owner = THIS_MODULE, .owner = THIS_MODULE,
.name = "ir-usb", .name = "ir-usb",
}, },
.description = "IR Dongle", .description = "IR Dongle",
.usb_driver = &ir_driver, .usb_driver = &ir_driver,
.id_table = id_table, .id_table = ir_id_table,
.num_ports = 1, .num_ports = 1,
.set_termios = ir_set_termios, .set_termios = ir_set_termios,
.attach = ir_startup, .attach = ir_startup,
.open = ir_open, .open = ir_open,
.close = ir_close, .close = ir_close,
.write = ir_write, .write = ir_write,
.write_bulk_callback = ir_write_bulk_callback, .write_bulk_callback = ir_write_bulk_callback,
.read_bulk_callback = ir_read_bulk_callback, .read_bulk_callback = ir_read_bulk_callback,
}; };
static inline void irda_usb_dump_class_desc(struct irda_class_desc *desc) static inline void irda_usb_dump_class_desc(struct usb_irda_cs_descriptor *desc)
{ {
dbg("bLength=%x", desc->bLength); dbg("bLength=%x", desc->bLength);
dbg("bDescriptorType=%x", desc->bDescriptorType); dbg("bDescriptorType=%x", desc->bDescriptorType);
dbg("bcdSpecRevision=%x", desc->bcdSpecRevision); dbg("bcdSpecRevision=%x", __le16_to_cpu(desc->bcdSpecRevision));
dbg("bmDataSize=%x", desc->bmDataSize); dbg("bmDataSize=%x", desc->bmDataSize);
dbg("bmWindowSize=%x", desc->bmWindowSize); dbg("bmWindowSize=%x", desc->bmWindowSize);
dbg("bmMinTurnaroundTime=%d", desc->bmMinTurnaroundTime); dbg("bmMinTurnaroundTime=%d", desc->bmMinTurnaroundTime);
dbg("wBaudRate=%x", desc->wBaudRate); dbg("wBaudRate=%x", __le16_to_cpu(desc->wBaudRate));
dbg("bmAdditionalBOFs=%x", desc->bmAdditionalBOFs); dbg("bmAdditionalBOFs=%x", desc->bmAdditionalBOFs);
dbg("bIrdaRateSniff=%x", desc->bIrdaRateSniff); dbg("bIrdaRateSniff=%x", desc->bIrdaRateSniff);
dbg("bMaxUnicastList=%x", desc->bMaxUnicastList); dbg("bMaxUnicastList=%x", desc->bMaxUnicastList);
@ -181,17 +162,18 @@ static inline void irda_usb_dump_class_desc(struct irda_class_desc *desc)
* *
* Based on the same function in drivers/net/irda/irda-usb.c * Based on the same function in drivers/net/irda/irda-usb.c
*/ */
static struct irda_class_desc *irda_usb_find_class_desc(struct usb_device *dev, unsigned int ifnum) static struct usb_irda_cs_descriptor *
irda_usb_find_class_desc(struct usb_device *dev, unsigned int ifnum)
{ {
struct irda_class_desc *desc; struct usb_irda_cs_descriptor *desc;
int ret; int ret;
desc = kzalloc(sizeof (struct irda_class_desc), GFP_KERNEL); desc = kzalloc(sizeof(*desc), GFP_KERNEL);
if (desc == NULL) if (!desc)
return NULL; return NULL;
ret = usb_control_msg(dev, usb_rcvctrlpipe(dev,0), ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
IU_REQ_GET_CLASS_DESC, USB_REQ_CS_IRDA_GET_CLASS_DESC,
USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE, USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE,
0, ifnum, desc, sizeof(*desc), 1000); 0, ifnum, desc, sizeof(*desc), 1000);
@ -199,17 +181,18 @@ static struct irda_class_desc *irda_usb_find_class_desc(struct usb_device *dev,
if (ret < sizeof(*desc)) { if (ret < sizeof(*desc)) {
dbg("%s - class descriptor read %s (%d)", dbg("%s - class descriptor read %s (%d)",
__func__, __func__,
(ret<0) ? "failed" : "too short", (ret < 0) ? "failed" : "too short",
ret); ret);
goto error; goto error;
} }
if (desc->bDescriptorType != USB_DT_IRDA) { if (desc->bDescriptorType != USB_DT_CS_IRDA) {
dbg("%s - bad class descriptor type", __func__); dbg("%s - bad class descriptor type", __func__);
goto error; goto error;
} }
irda_usb_dump_class_desc(desc); irda_usb_dump_class_desc(desc);
return desc; return desc;
error: error:
kfree(desc); kfree(desc);
return NULL; return NULL;
@ -219,64 +202,100 @@ static struct irda_class_desc *irda_usb_find_class_desc(struct usb_device *dev,
static u8 ir_xbof_change(u8 xbof) static u8 ir_xbof_change(u8 xbof)
{ {
u8 result; u8 result;
/* reference irda-usb.c */ /* reference irda-usb.c */
switch(xbof) { switch (xbof) {
case 48: result = 0x10; break; case 48:
case 28: result = 0x10;
case 24: result = 0x20; break; break;
default: case 28:
case 12: result = 0x30; break; case 24:
case 5: result = 0x20;
case 6: result = 0x40; break; break;
case 3: result = 0x50; break; default:
case 2: result = 0x60; break; case 12:
case 1: result = 0x70; break; result = 0x30;
case 0: result = 0x80; break; break;
case 5:
case 6:
result = 0x40;
break;
case 3:
result = 0x50;
break;
case 2:
result = 0x60;
break;
case 1:
result = 0x70;
break;
case 0:
result = 0x80;
break;
} }
return(result); return(result);
} }
static int ir_startup (struct usb_serial *serial) static int ir_startup(struct usb_serial *serial)
{ {
struct irda_class_desc *irda_desc; struct usb_irda_cs_descriptor *irda_desc;
irda_desc = irda_usb_find_class_desc (serial->dev, 0); irda_desc = irda_usb_find_class_desc(serial->dev, 0);
if (irda_desc == NULL) { if (!irda_desc) {
dev_err (&serial->dev->dev, "IRDA class descriptor not found, device not bound\n"); dev_err(&serial->dev->dev,
"IRDA class descriptor not found, device not bound\n");
return -ENODEV; return -ENODEV;
} }
dbg ("%s - Baud rates supported:%s%s%s%s%s%s%s%s%s", dbg("%s - Baud rates supported:%s%s%s%s%s%s%s%s%s",
__func__, __func__,
(irda_desc->wBaudRate & 0x0001) ? " 2400" : "", (irda_desc->wBaudRate & USB_IRDA_BR_2400) ? " 2400" : "",
(irda_desc->wBaudRate & 0x0002) ? " 9600" : "", (irda_desc->wBaudRate & USB_IRDA_BR_9600) ? " 9600" : "",
(irda_desc->wBaudRate & 0x0004) ? " 19200" : "", (irda_desc->wBaudRate & USB_IRDA_BR_19200) ? " 19200" : "",
(irda_desc->wBaudRate & 0x0008) ? " 38400" : "", (irda_desc->wBaudRate & USB_IRDA_BR_38400) ? " 38400" : "",
(irda_desc->wBaudRate & 0x0010) ? " 57600" : "", (irda_desc->wBaudRate & USB_IRDA_BR_57600) ? " 57600" : "",
(irda_desc->wBaudRate & 0x0020) ? " 115200" : "", (irda_desc->wBaudRate & USB_IRDA_BR_115200) ? " 115200" : "",
(irda_desc->wBaudRate & 0x0040) ? " 576000" : "", (irda_desc->wBaudRate & USB_IRDA_BR_576000) ? " 576000" : "",
(irda_desc->wBaudRate & 0x0080) ? " 1152000" : "", (irda_desc->wBaudRate & USB_IRDA_BR_1152000) ? " 1152000" : "",
(irda_desc->wBaudRate & 0x0100) ? " 4000000" : ""); (irda_desc->wBaudRate & USB_IRDA_BR_4000000) ? " 4000000" : "");
switch( irda_desc->bmAdditionalBOFs ) { switch (irda_desc->bmAdditionalBOFs) {
case 0x01: ir_add_bof = 48; break; case USB_IRDA_AB_48:
case 0x02: ir_add_bof = 24; break; ir_add_bof = 48;
case 0x04: ir_add_bof = 12; break; break;
case 0x08: ir_add_bof = 6; break; case USB_IRDA_AB_24:
case 0x10: ir_add_bof = 3; break; ir_add_bof = 24;
case 0x20: ir_add_bof = 2; break; break;
case 0x40: ir_add_bof = 1; break; case USB_IRDA_AB_12:
case 0x80: ir_add_bof = 0; break; ir_add_bof = 12;
default:; break;
case USB_IRDA_AB_6:
ir_add_bof = 6;
break;
case USB_IRDA_AB_3:
ir_add_bof = 3;
break;
case USB_IRDA_AB_2:
ir_add_bof = 2;
break;
case USB_IRDA_AB_1:
ir_add_bof = 1;
break;
case USB_IRDA_AB_0:
ir_add_bof = 0;
break;
default:
break;
} }
kfree (irda_desc); kfree(irda_desc);
return 0; return 0;
} }
static int ir_open (struct usb_serial_port *port, struct file *filp) static int ir_open(struct usb_serial_port *port, struct file *filp)
{ {
char *buffer; char *buffer;
int result = 0; int result = 0;
@ -285,43 +304,46 @@ static int ir_open (struct usb_serial_port *port, struct file *filp)
if (buffer_size) { if (buffer_size) {
/* override the default buffer sizes */ /* override the default buffer sizes */
buffer = kmalloc (buffer_size, GFP_KERNEL); buffer = kmalloc(buffer_size, GFP_KERNEL);
if (!buffer) { if (!buffer) {
dev_err (&port->dev, "%s - out of memory.\n", __func__); dev_err(&port->dev, "%s - out of memory.\n", __func__);
return -ENOMEM; return -ENOMEM;
} }
kfree (port->read_urb->transfer_buffer); kfree(port->read_urb->transfer_buffer);
port->read_urb->transfer_buffer = buffer; port->read_urb->transfer_buffer = buffer;
port->read_urb->transfer_buffer_length = buffer_size; port->read_urb->transfer_buffer_length = buffer_size;
buffer = kmalloc (buffer_size, GFP_KERNEL); buffer = kmalloc(buffer_size, GFP_KERNEL);
if (!buffer) { if (!buffer) {
dev_err (&port->dev, "%s - out of memory.\n", __func__); dev_err(&port->dev, "%s - out of memory.\n", __func__);
return -ENOMEM; return -ENOMEM;
} }
kfree (port->write_urb->transfer_buffer); kfree(port->write_urb->transfer_buffer);
port->write_urb->transfer_buffer = buffer; port->write_urb->transfer_buffer = buffer;
port->write_urb->transfer_buffer_length = buffer_size; port->write_urb->transfer_buffer_length = buffer_size;
port->bulk_out_size = buffer_size; port->bulk_out_size = buffer_size;
} }
/* Start reading from the device */ /* Start reading from the device */
usb_fill_bulk_urb ( usb_fill_bulk_urb(
port->read_urb, port->read_urb,
port->serial->dev, port->serial->dev,
usb_rcvbulkpipe(port->serial->dev, port->bulk_in_endpointAddress), usb_rcvbulkpipe(port->serial->dev,
port->bulk_in_endpointAddress),
port->read_urb->transfer_buffer, port->read_urb->transfer_buffer,
port->read_urb->transfer_buffer_length, port->read_urb->transfer_buffer_length,
ir_read_bulk_callback, ir_read_bulk_callback,
port); port);
result = usb_submit_urb(port->read_urb, GFP_KERNEL); result = usb_submit_urb(port->read_urb, GFP_KERNEL);
if (result) if (result)
dev_err(&port->dev, "%s - failed submitting read urb, error %d\n", __func__, result); dev_err(&port->dev,
"%s - failed submitting read urb, error %d\n",
__func__, result);
return result; return result;
} }
static void ir_close (struct usb_serial_port *port, struct file * filp) static void ir_close(struct usb_serial_port *port, struct file *filp)
{ {
dbg("%s - port %d", __func__, port->number); dbg("%s - port %d", __func__, port->number);
@ -329,7 +351,8 @@ static void ir_close (struct usb_serial_port *port, struct file * filp)
usb_kill_urb(port->read_urb); usb_kill_urb(port->read_urb);
} }
static int ir_write (struct usb_serial_port *port, const unsigned char *buf, int count) static int ir_write(struct usb_serial_port *port,
const unsigned char *buf, int count)
{ {
unsigned char *transfer_buffer; unsigned char *transfer_buffer;
int result; int result;
@ -338,7 +361,7 @@ static int ir_write (struct usb_serial_port *port, const unsigned char *buf, int
dbg("%s - port = %d, count = %d", __func__, port->number, count); dbg("%s - port = %d, count = %d", __func__, port->number, count);
if (!port->tty) { if (!port->tty) {
dev_err (&port->dev, "%s - no tty???\n", __func__); dev_err(&port->dev, "%s - no tty???\n", __func__);
return 0; return 0;
} }
@ -359,7 +382,7 @@ static int ir_write (struct usb_serial_port *port, const unsigned char *buf, int
/* /*
* The first byte of the packet we send to the device contains an * The first byte of the packet we send to the device contains an
* inband header which indicates an additional number of BOFs and * inbound header which indicates an additional number of BOFs and
* a baud rate change. * a baud rate change.
* *
* See section 5.4.2.2 of the USB IrDA spec. * See section 5.4.2.2 of the USB IrDA spec.
@ -367,9 +390,9 @@ static int ir_write (struct usb_serial_port *port, const unsigned char *buf, int
*transfer_buffer = ir_xbof | ir_baud; *transfer_buffer = ir_xbof | ir_baud;
++transfer_buffer; ++transfer_buffer;
memcpy (transfer_buffer, buf, transfer_size); memcpy(transfer_buffer, buf, transfer_size);
usb_fill_bulk_urb ( usb_fill_bulk_urb(
port->write_urb, port->write_urb,
port->serial->dev, port->serial->dev,
usb_sndbulkpipe(port->serial->dev, usb_sndbulkpipe(port->serial->dev,
@ -381,17 +404,19 @@ static int ir_write (struct usb_serial_port *port, const unsigned char *buf, int
port->write_urb->transfer_flags = URB_ZERO_PACKET; port->write_urb->transfer_flags = URB_ZERO_PACKET;
result = usb_submit_urb (port->write_urb, GFP_ATOMIC); result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
if (result) { if (result) {
port->write_urb_busy = 0; port->write_urb_busy = 0;
dev_err(&port->dev, "%s - failed submitting write urb, error %d\n", __func__, result); dev_err(&port->dev,
"%s - failed submitting write urb, error %d\n",
__func__, result);
} else } else
result = transfer_size; result = transfer_size;
return result; return result;
} }
static void ir_write_bulk_callback (struct urb *urb) static void ir_write_bulk_callback(struct urb *urb)
{ {
struct usb_serial_port *port = urb->context; struct usb_serial_port *port = urb->context;
int status = urb->status; int status = urb->status;
@ -405,7 +430,7 @@ static void ir_write_bulk_callback (struct urb *urb)
return; return;
} }
usb_serial_debug_data ( usb_serial_debug_data(
debug, debug,
&port->dev, &port->dev,
__func__, __func__,
@ -415,7 +440,7 @@ static void ir_write_bulk_callback (struct urb *urb)
usb_serial_port_softint(port); usb_serial_port_softint(port);
} }
static void ir_read_bulk_callback (struct urb *urb) static void ir_read_bulk_callback(struct urb *urb)
{ {
struct usb_serial_port *port = urb->context; struct usb_serial_port *port = urb->context;
struct tty_struct *tty; struct tty_struct *tty;
@ -431,68 +456,69 @@ static void ir_read_bulk_callback (struct urb *urb)
} }
switch (status) { switch (status) {
case 0: /* Successful */ case 0: /* Successful */
/* /*
* The first byte of the packet we get from the device * The first byte of the packet we get from the device
* contains a busy indicator and baud rate change. * contains a busy indicator and baud rate change.
* See section 5.4.1.2 of the USB IrDA spec. * See section 5.4.1.2 of the USB IrDA spec.
*/ */
if ((*data & 0x0f) > 0) if ((*data & 0x0f) > 0)
ir_baud = *data & 0x0f; ir_baud = *data & 0x0f;
usb_serial_debug_data ( usb_serial_debug_data(
debug, debug,
&port->dev, &port->dev,
__func__, __func__,
urb->actual_length, urb->actual_length,
data); data);
tty = port->tty; tty = port->tty;
if (tty_buffer_request_room(tty, urb->actual_length - 1)) { if (tty_buffer_request_room(tty, urb->actual_length - 1)) {
tty_insert_flip_string(tty, data+1, urb->actual_length - 1); tty_insert_flip_string(tty, data + 1,
tty_flip_buffer_push(tty); urb->actual_length - 1);
} tty_flip_buffer_push(tty);
}
/* /*
* No break here. * No break here.
* We want to resubmit the urb so we can read * We want to resubmit the urb so we can read
* again. * again.
*/ */
case -EPROTO: /* taking inspiration from pl2303.c */ case -EPROTO: /* taking inspiration from pl2303.c */
/* Continue trying to always read */ /* Continue trying to always read */
usb_fill_bulk_urb ( usb_fill_bulk_urb(
port->read_urb, port->read_urb,
port->serial->dev, port->serial->dev,
usb_rcvbulkpipe(port->serial->dev, usb_rcvbulkpipe(port->serial->dev,
port->bulk_in_endpointAddress), port->bulk_in_endpointAddress),
port->read_urb->transfer_buffer, port->read_urb->transfer_buffer,
port->read_urb->transfer_buffer_length, port->read_urb->transfer_buffer_length,
ir_read_bulk_callback, ir_read_bulk_callback,
port); port);
result = usb_submit_urb(port->read_urb, GFP_ATOMIC); result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
if (result) if (result)
dev_err(&port->dev, "%s - failed resubmitting read urb, error %d\n", dev_err(&port->dev,
__func__, result); "%s - failed resubmitting read urb, error %d\n",
__func__, result);
break ; break;
default:
dbg("%s - nonzero read bulk status received: %d",
__func__,
status);
break ;
default:
dbg("%s - nonzero read bulk status received: %d",
__func__,
status);
break;
} }
return; return;
} }
static void ir_set_termios (struct usb_serial_port *port, struct ktermios *old_termios) static void ir_set_termios(struct usb_serial_port *port,
struct ktermios *old_termios)
{ {
unsigned char *transfer_buffer; unsigned char *transfer_buffer;
int result; int result;
@ -510,19 +536,36 @@ static void ir_set_termios (struct usb_serial_port *port, struct ktermios *old_t
*/ */
switch (baud) { switch (baud) {
case 2400: ir_baud = SPEED_2400; break; case 2400:
case 9600: ir_baud = SPEED_9600; break; ir_baud = USB_IRDA_BR_2400;
case 19200: ir_baud = SPEED_19200; break; break;
case 38400: ir_baud = SPEED_38400; break; case 9600:
case 57600: ir_baud = SPEED_57600; break; ir_baud = USB_IRDA_BR_9600;
case 115200: ir_baud = SPEED_115200; break; break;
case 576000: ir_baud = SPEED_576000; break; case 19200:
case 1152000: ir_baud = SPEED_1152000; break; ir_baud = USB_IRDA_BR_19200;
case 4000000: ir_baud = SPEED_4000000; break; break;
break; case 38400:
default: ir_baud = USB_IRDA_BR_38400;
ir_baud = SPEED_9600; break;
baud = 9600; case 57600:
ir_baud = USB_IRDA_BR_57600;
break;
case 115200:
ir_baud = USB_IRDA_BR_115200;
break;
case 576000:
ir_baud = USB_IRDA_BR_576000;
break;
case 1152000:
ir_baud = USB_IRDA_BR_1152000;
break;
case 4000000:
ir_baud = USB_IRDA_BR_4000000;
break;
default:
ir_baud = USB_IRDA_BR_9600;
baud = 9600;
} }
if (xbof == -1) if (xbof == -1)
@ -538,10 +581,11 @@ static void ir_set_termios (struct usb_serial_port *port, struct ktermios *old_t
transfer_buffer = port->write_urb->transfer_buffer; transfer_buffer = port->write_urb->transfer_buffer;
*transfer_buffer = ir_xbof | ir_baud; *transfer_buffer = ir_xbof | ir_baud;
usb_fill_bulk_urb ( usb_fill_bulk_urb(
port->write_urb, port->write_urb,
port->serial->dev, port->serial->dev,
usb_sndbulkpipe(port->serial->dev, port->bulk_out_endpointAddress), usb_sndbulkpipe(port->serial->dev,
port->bulk_out_endpointAddress),
port->write_urb->transfer_buffer, port->write_urb->transfer_buffer,
1, 1,
ir_write_bulk_callback, ir_write_bulk_callback,
@ -549,38 +593,44 @@ static void ir_set_termios (struct usb_serial_port *port, struct ktermios *old_t
port->write_urb->transfer_flags = URB_ZERO_PACKET; port->write_urb->transfer_flags = URB_ZERO_PACKET;
result = usb_submit_urb (port->write_urb, GFP_KERNEL); result = usb_submit_urb(port->write_urb, GFP_KERNEL);
if (result) if (result)
dev_err(&port->dev, "%s - failed submitting write urb, error %d\n", __func__, result); dev_err(&port->dev,
"%s - failed submitting write urb, error %d\n",
__func__, result);
/* Only speed changes are supported */ /* Only speed changes are supported */
tty_termios_copy_hw(port->tty->termios, old_termios); tty_termios_copy_hw(port->tty->termios, old_termios);
tty_encode_baud_rate(port->tty, baud, baud); tty_encode_baud_rate(port->tty, baud, baud);
} }
static int __init ir_init(void)
static int __init ir_init (void)
{ {
int retval; int retval;
retval = usb_serial_register(&ir_device); retval = usb_serial_register(&ir_device);
if (retval) if (retval)
goto failed_usb_serial_register; goto failed_usb_serial_register;
retval = usb_register(&ir_driver); retval = usb_register(&ir_driver);
if (retval) if (retval)
goto failed_usb_register; goto failed_usb_register;
info(DRIVER_DESC " " DRIVER_VERSION); info(DRIVER_DESC " " DRIVER_VERSION);
return 0; return 0;
failed_usb_register: failed_usb_register:
usb_serial_deregister(&ir_device); usb_serial_deregister(&ir_device);
failed_usb_serial_register: failed_usb_serial_register:
return retval; return retval;
} }
static void __exit ir_exit(void)
static void __exit ir_exit (void)
{ {
usb_deregister (&ir_driver); usb_deregister(&ir_driver);
usb_serial_deregister (&ir_device); usb_serial_deregister(&ir_device);
} }

151
include/linux/usb/irda.h Normal file
View file

@ -0,0 +1,151 @@
/*
* USB IrDA Bridge Device Definition
*/
#ifndef __LINUX_USB_IRDA_H
#define __LINUX_USB_IRDA_H
/* This device should use Application-specific class */
#define USB_SUBCLASS_IRDA 0x02
/*-------------------------------------------------------------------------*/
/* Class-Specific requests (bRequest field) */
#define USB_REQ_CS_IRDA_RECEIVING 1
#define USB_REQ_CS_IRDA_CHECK_MEDIA_BUSY 3
#define USB_REQ_CS_IRDA_RATE_SNIFF 4
#define USB_REQ_CS_IRDA_UNICAST_LIST 5
#define USB_REQ_CS_IRDA_GET_CLASS_DESC 6
/*-------------------------------------------------------------------------*/
/* Class-Specific descriptor */
#define USB_DT_CS_IRDA 0x21
/*-------------------------------------------------------------------------*/
/* Data sizes */
#define USB_IRDA_DS_2048 (1 << 5)
#define USB_IRDA_DS_1024 (1 << 4)
#define USB_IRDA_DS_512 (1 << 3)
#define USB_IRDA_DS_256 (1 << 2)
#define USB_IRDA_DS_128 (1 << 1)
#define USB_IRDA_DS_64 (1 << 0)
/* Window sizes */
#define USB_IRDA_WS_7 (1 << 6)
#define USB_IRDA_WS_6 (1 << 5)
#define USB_IRDA_WS_5 (1 << 4)
#define USB_IRDA_WS_4 (1 << 3)
#define USB_IRDA_WS_3 (1 << 2)
#define USB_IRDA_WS_2 (1 << 1)
#define USB_IRDA_WS_1 (1 << 0)
/* Min turnaround times in usecs */
#define USB_IRDA_MTT_0 (1 << 7)
#define USB_IRDA_MTT_10 (1 << 6)
#define USB_IRDA_MTT_50 (1 << 5)
#define USB_IRDA_MTT_100 (1 << 4)
#define USB_IRDA_MTT_500 (1 << 3)
#define USB_IRDA_MTT_1000 (1 << 2)
#define USB_IRDA_MTT_5000 (1 << 1)
#define USB_IRDA_MTT_10000 (1 << 0)
/* Baud rates */
#define USB_IRDA_BR_4000000 (1 << 8)
#define USB_IRDA_BR_1152000 (1 << 7)
#define USB_IRDA_BR_576000 (1 << 6)
#define USB_IRDA_BR_115200 (1 << 5)
#define USB_IRDA_BR_57600 (1 << 4)
#define USB_IRDA_BR_38400 (1 << 3)
#define USB_IRDA_BR_19200 (1 << 2)
#define USB_IRDA_BR_9600 (1 << 1)
#define USB_IRDA_BR_2400 (1 << 0)
/* Additional BOFs */
#define USB_IRDA_AB_0 (1 << 7)
#define USB_IRDA_AB_1 (1 << 6)
#define USB_IRDA_AB_2 (1 << 5)
#define USB_IRDA_AB_3 (1 << 4)
#define USB_IRDA_AB_6 (1 << 3)
#define USB_IRDA_AB_12 (1 << 2)
#define USB_IRDA_AB_24 (1 << 1)
#define USB_IRDA_AB_48 (1 << 0)
/* IRDA Rate Sniff */
#define USB_IRDA_RATE_SNIFF 1
/*-------------------------------------------------------------------------*/
struct usb_irda_cs_descriptor {
__u8 bLength;
__u8 bDescriptorType;
__le16 bcdSpecRevision;
__u8 bmDataSize;
__u8 bmWindowSize;
__u8 bmMinTurnaroundTime;
__le16 wBaudRate;
__u8 bmAdditionalBOFs;
__u8 bIrdaRateSniff;
__u8 bMaxUnicastList;
} __attribute__ ((packed));
/*-------------------------------------------------------------------------*/
/* Data Format */
#define USB_IRDA_STATUS_MEDIA_BUSY (1 << 7)
/* The following is a 4-bit value used for both
* inbound and outbound headers:
*
* 0 - speed ignored
* 1 - 2400 bps
* 2 - 9600 bps
* 3 - 19200 bps
* 4 - 38400 bps
* 5 - 57600 bps
* 6 - 115200 bps
* 7 - 576000 bps
* 8 - 1.152 Mbps
* 9 - 5 mbps
* 10..15 - Reserved
*/
#define USB_IRDA_STATUS_LINK_SPEED 0x0f
/* The following is a 4-bit value used only for
* outbound header:
*
* 0 - No change (BOF ignored)
* 1 - 48 BOFs
* 2 - 24 BOFs
* 3 - 12 BOFs
* 4 - 6 BOFs
* 5 - 3 BOFs
* 6 - 2 BOFs
* 7 - 1 BOFs
* 8 - 0 BOFs
* 9..15 - Reserved
*/
#define USB_IRDA_EXTRA_BOFS 0xf0
struct usb_irda_inbound_header {
__u8 bmStatus;
};
struct usb_irda_outbound_header {
__u8 bmChange;
};
#endif /* __LINUX_USB_IRDA_H */