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[IRDA]: Support for Sigmatel STIR421x chip 

This patch enables support for the Sigmatel's STIR421x IrDA chip.
Once patched with Sigmatel's firmware, this chip "almost" follows the
USB-IrDA spec. Thus this patch is against irda-usb.[ch].

The code has been tested by Nick Fedchik on an STIR4210 chipset based
dongle.

Signed-off-by: Samuel Ortiz <samuel.ortiz@nokia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Samuel Ortiz 2006-04-05 22:39:14 -07:00 committed by David S. Miller
parent c1e14a6ea2
commit 137dc0233f
2 changed files with 372 additions and 34 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

363
drivers/net/irda/irda-usb.c
View File

@ -1,7 +1,7 @@
/*****************************************************************************
*
* Filename: irda-usb.c
* Version: 0.9b
* Version: 0.10
* Description: IrDA-USB Driver
* Status: Experimental
* Author: Dag Brattli <dag@brattli.net>
@ -9,6 +9,9 @@
* Copyright (C) 2000, Roman Weissgaerber <weissg@vienna.at>
* Copyright (C) 2001, Dag Brattli <dag@brattli.net>
* Copyright (C) 2001, Jean Tourrilhes <jt@hpl.hp.com>
* Copyright (C) 2004, SigmaTel, Inc. <irquality@sigmatel.com>
* Copyright (C) 2005, Milan Beno <beno@pobox.sk>
* Copyright (C) 2006, Nick Fedchik <nick@fedchik.org.ua>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@ -61,6 +64,7 @@
#include <linux/slab.h>
#include <linux/rtnetlink.h>
#include <linux/usb.h>
#include <linux/firmware.h>
#include "irda-usb.h"
@ -78,8 +82,12 @@ static struct usb_device_id dongles[] = {
{ USB_DEVICE(0x50f, 0x180), .driver_info = IUC_SPEED_BUG | IUC_NO_WINDOW },
/* Extended Systems, Inc., XTNDAccess IrDA USB (ESI-9685) */
{ USB_DEVICE(0x8e9, 0x100), .driver_info = IUC_SPEED_BUG | IUC_NO_WINDOW },
/* SigmaTel STIR4210/4220/4116 USB IrDA (VFIR) Bridge */
{ USB_DEVICE(0x66f, 0x4210), .driver_info = IUC_STIR_4210 | IUC_SPEED_BUG },
{ USB_DEVICE(0x66f, 0x4220), .driver_info = IUC_STIR_4210 | IUC_SPEED_BUG },
{ USB_DEVICE(0x66f, 0x4116), .driver_info = IUC_STIR_4210 | IUC_SPEED_BUG },
{ .match_flags = USB_DEVICE_ID_MATCH_INT_CLASS |
USB_DEVICE_ID_MATCH_INT_SUBCLASS,
USB_DEVICE_ID_MATCH_INT_SUBCLASS,
.bInterfaceClass = USB_CLASS_APP_SPEC,
.bInterfaceSubClass = USB_CLASS_IRDA,
.driver_info = IUC_DEFAULT, },
@ -99,6 +107,7 @@ MODULE_DEVICE_TABLE(usb, dongles);
/*------------------------------------------------------------------*/
static void irda_usb_init_qos(struct irda_usb_cb *self) ;
static struct irda_class_desc *irda_usb_find_class_desc(struct usb_interface *intf);
static void irda_usb_disconnect(struct usb_interface *intf);
static void irda_usb_change_speed_xbofs(struct irda_usb_cb *self);
@ -141,7 +150,24 @@ static void irda_usb_build_header(struct irda_usb_cb *self,
__u8 *header,
int force)
{
/* Set the negotiated link speed */
/* Here we check if we have an STIR421x chip,
* and if either speed or xbofs (or both) needs
* to be changed.
*/
if (self->capability & IUC_STIR_4210 &&
((self->new_speed != -1) || (self->new_xbofs != -1))) {
/* With STIR421x, speed and xBOFs must be set at the same
* time, even if only one of them changes.
*/
if (self->new_speed == -1)
self->new_speed = self->speed ;
if (self->new_xbofs == -1)
self->new_xbofs = self->xbofs ;
}
/* Set the link speed */
if (self->new_speed != -1) {
/* Hum... Ugly hack :-(
* Some device are not compliant with the spec and change
@ -191,7 +217,11 @@ static void irda_usb_build_header(struct irda_usb_cb *self,
*header = SPEED_4000000;
self->new_xbofs = 0;
break;
}
case 16000000:
*header = SPEED_16000000;
self->new_xbofs = 0;
break;
}
} else
/* No change */
*header = 0;
@ -235,6 +265,32 @@ static void irda_usb_build_header(struct irda_usb_cb *self,
}
}
/*
* calculate turnaround time for SigmaTel header
*/
static __u8 get_turnaround_time(struct sk_buff *skb)
{
int turnaround_time = irda_get_mtt(skb);
if ( turnaround_time == 0 )
return 0;
else if ( turnaround_time <= 10 )
return 1;
else if ( turnaround_time <= 50 )
return 2;
else if ( turnaround_time <= 100 )
return 3;
else if ( turnaround_time <= 500 )
return 4;
else if ( turnaround_time <= 1000 )
return 5;
else if ( turnaround_time <= 5000 )
return 6;
else
return 7;
}
/*------------------------------------------------------------------*/
/*
* Send a command to change the speed of the dongle
@ -262,12 +318,18 @@ static void irda_usb_change_speed_xbofs(struct irda_usb_cb *self)
/* Set the new speed and xbofs in this fake frame */
irda_usb_build_header(self, frame, 1);
if ( self->capability & IUC_STIR_4210 ) {
if (frame[0] == 0) return ; // do nothing if no change
frame[1] = 0; // other parameters don't change here
frame[2] = 0;
}
/* Submit the 0 length IrDA frame to trigger new speed settings */
usb_fill_bulk_urb(urb, self->usbdev,
usb_sndbulkpipe(self->usbdev, self->bulk_out_ep),
frame, IRDA_USB_SPEED_MTU,
speed_bulk_callback, self);
urb->transfer_buffer_length = USB_IRDA_HEADER;
urb->transfer_buffer_length = self->header_length;
urb->transfer_flags = 0;
/* Irq disabled -> GFP_ATOMIC */
@ -383,16 +445,35 @@ static int irda_usb_hard_xmit(struct sk_buff *skb, struct net_device *netdev)
* allocation will be done lower in skb_push().
* Also, we don't use directly skb_cow(), because it require
* headroom >= 16, which force unnecessary copies - Jean II */
if (skb_headroom(skb) < USB_IRDA_HEADER) {
if (skb_headroom(skb) < self->header_length) {
IRDA_DEBUG(0, "%s(), Insuficient skb headroom.\n", __FUNCTION__);
if (skb_cow(skb, USB_IRDA_HEADER)) {
if (skb_cow(skb, self->header_length)) {
IRDA_WARNING("%s(), failed skb_cow() !!!\n", __FUNCTION__);
goto drop;
}
}
/* Change setting for next frame */
irda_usb_build_header(self, skb_push(skb, USB_IRDA_HEADER), 0);
if ( self->capability & IUC_STIR_4210 ) {
__u8 turnaround_time;
__u8* frame;
turnaround_time = get_turnaround_time( skb );
frame= skb_push(skb, self->header_length);
irda_usb_build_header(self, frame, 0);
frame[2] = turnaround_time;
if ((skb->len != 0) &&
((skb->len % 128) == 0) &&
((skb->len % 512) != 0)) {
/* add extra byte for special SigmaTel feature */
frame[1] = 1;
skb_put(skb, 1);
} else {
frame[1] = 0;
}
} else {
irda_usb_build_header(self, skb_push(skb, self->header_length), 0);
}
/* FIXME: Make macro out of this one */
((struct irda_skb_cb *)skb->cb)->context = self;
@ -795,7 +876,7 @@ static void irda_usb_receive(struct urb *urb, struct pt_regs *regs)
}
/* Check for empty frames */
if (urb->actual_length <= USB_IRDA_HEADER) {
if (urb->actual_length <= self->header_length) {
IRDA_WARNING("%s(), empty frame!\n", __FUNCTION__);
goto done;
}
@ -816,7 +897,11 @@ static void irda_usb_receive(struct urb *urb, struct pt_regs *regs)
docopy = (urb->actual_length < IRDA_RX_COPY_THRESHOLD);
/* Allocate a new skb */
newskb = dev_alloc_skb(docopy ? urb->actual_length : IRDA_SKB_MAX_MTU);
if ( self->capability & IUC_STIR_4210 )
newskb = dev_alloc_skb(docopy ? urb->actual_length : IRDA_SKB_MAX_MTU + USB_IRDA_SIGMATEL_HEADER);
else
newskb = dev_alloc_skb(docopy ? urb->actual_length : IRDA_SKB_MAX_MTU);
if (!newskb) {
self->stats.rx_dropped++;
/* We could deliver the current skb, but this would stall
@ -845,7 +930,7 @@ static void irda_usb_receive(struct urb *urb, struct pt_regs *regs)
/* Set proper length on skb & remove USB-IrDA header */
skb_put(dataskb, urb->actual_length);
skb_pull(dataskb, USB_IRDA_HEADER);
skb_pull(dataskb, self->header_length);
/* Ask the networking layer to queue the packet for the IrDA stack */
dataskb->dev = self->netdev;
@ -937,6 +1022,191 @@ static int irda_usb_is_receiving(struct irda_usb_cb *self)
return 0; /* For now */
}
#define STIR421X_PATCH_PRODUCT_VERSION_STR "Product Version: "
#define STIR421X_PATCH_COMPONENT_VERSION_STR "Component Version: "
#define STIR421X_PATCH_DATA_TAG_STR "STMP"
#define STIR421X_PATCH_FILE_VERSION_MAX_OFFSET 512 /* version info is before here */
#define STIR421X_PATCH_FILE_IMAGE_MAX_OFFSET 512 /* patch image starts before here */
#define STIR421X_PATCH_FILE_END_OF_HEADER_TAG 0x1A /* marks end of patch file header (PC DOS text file EOF character) */
/*
* Known firmware patches for STIR421x dongles
*/
static char * stir421x_patches[] = {
"42101001.sb",
"42101002.sb",
};
static int stir421x_get_patch_version(unsigned char * patch, const unsigned long patch_len)
{
unsigned int version_offset;
unsigned long version_major, version_minor, version_build;
unsigned char * version_start;
int version_found = 0;
for (version_offset = 0;
version_offset < STIR421X_PATCH_FILE_END_OF_HEADER_TAG;
version_offset++) {
if (!memcmp(patch + version_offset,
STIR421X_PATCH_PRODUCT_VERSION_STR,
sizeof(STIR421X_PATCH_PRODUCT_VERSION_STR) - 1)) {
version_found = 1;
version_start = patch +
version_offset +
sizeof(STIR421X_PATCH_PRODUCT_VERSION_STR) - 1;
break;
}
}
/* We couldn't find a product version on this patch */
if (!version_found)
return -EINVAL;
/* Let's check if the product version is dotted */
if (version_start[3] != '.' ||
version_start[7] != '.')
return -EINVAL;
version_major = simple_strtoul(version_start, NULL, 10);
version_minor = simple_strtoul(version_start + 4, NULL, 10);
version_build = simple_strtoul(version_start + 8, NULL, 10);
IRDA_DEBUG(2, "%s(), Major: %ld Minor: %ld Build: %ld\n",
__FUNCTION__,
version_major, version_minor, version_build);
return (((version_major) << 12) +
((version_minor) << 8) +
((version_build / 10) << 4) +
(version_build % 10));
}
static int stir421x_upload_patch (struct irda_usb_cb *self,
unsigned char * patch,
const unsigned int patch_len)
{
int retval = 0;
int actual_len;
unsigned int i = 0, download_amount = 0;
unsigned char * patch_chunk;
IRDA_DEBUG (2, "%s(), Uploading STIR421x Patch\n", __FUNCTION__);
patch_chunk = kzalloc(STIR421X_MAX_PATCH_DOWNLOAD_SIZE, GFP_KERNEL);
if (patch_chunk == NULL)
return -ENOMEM;
/* break up patch into 1023-byte sections */
for (i = 0; retval >= 0 && i < patch_len; i += download_amount) {
download_amount = patch_len - i;
if (download_amount > STIR421X_MAX_PATCH_DOWNLOAD_SIZE)
download_amount = STIR421X_MAX_PATCH_DOWNLOAD_SIZE;
/* download the patch section */
memcpy(patch_chunk, patch + i, download_amount);
retval = usb_bulk_msg (self->usbdev,
usb_sndbulkpipe (self->usbdev,
self->bulk_out_ep),
patch_chunk, download_amount,
&actual_len, msecs_to_jiffies (500));
IRDA_DEBUG (2, "%s(), Sent %u bytes\n", __FUNCTION__,
actual_len);
if (retval == 0)
mdelay(10);
}
kfree(patch_chunk);
if (i != patch_len) {
IRDA_ERROR ("%s(), Pushed %d bytes (!= patch_len (%d))\n",
__FUNCTION__, i, patch_len);
retval = -EIO;
}
if (retval < 0)
/* todo - mark device as not ready */
IRDA_ERROR ("%s(), STIR421x patch upload failed (%d)\n",
__FUNCTION__, retval);
return retval;
}
static int stir421x_patch_device(struct irda_usb_cb *self)
{
unsigned int i, patch_found = 0, data_found = 0, data_offset;
int patch_version, ret = 0;
const struct firmware *fw_entry;
for (i = 0; i < ARRAY_SIZE(stir421x_patches); i++) {
if(request_firmware(&fw_entry, stir421x_patches[i], &self->usbdev->dev) != 0) {
IRDA_ERROR( "%s(), Patch %s is not available\n", __FUNCTION__, stir421x_patches[i]);
continue;
}
/* We found a patch from userspace */
patch_version = stir421x_get_patch_version (fw_entry->data, fw_entry->size);
if (patch_version < 0) {
/* Couldn't fetch a version, let's move on to the next file */
IRDA_ERROR("%s(), version parsing failed\n", __FUNCTION__);
ret = patch_version;
release_firmware(fw_entry);
continue;
}
if (patch_version != self->usbdev->descriptor.bcdDevice) {
/* Patch version and device don't match */
IRDA_ERROR ("%s(), wrong patch version (%d <-> %d)\n",
__FUNCTION__,
patch_version, self->usbdev->descriptor.bcdDevice);
ret = -EINVAL;
release_firmware(fw_entry);
continue;
}
/* If we're here, we've found a correct patch */
patch_found = 1;
break;
}
/* We couldn't find a valid firmware, let's leave */
if (!patch_found)
return ret;
/* The actual image starts after the "STMP" keyword */
for (data_offset = 0; data_offset < STIR421X_PATCH_FILE_IMAGE_MAX_OFFSET; data_offset++) {
if (!memcmp(fw_entry->data + data_offset,
STIR421X_PATCH_DATA_TAG_STR,
sizeof(STIR421X_PATCH_FILE_IMAGE_MAX_OFFSET))) {
IRDA_DEBUG(2, "%s(), found patch data for STIR421x at offset %d\n",
__FUNCTION__, data_offset);
data_found = 1;
break;
}
}
/* We couldn't find "STMP" from the header */
if (!data_found)
return -EINVAL;
/* Let's upload the patch to the target */
ret = stir421x_upload_patch(self,
&fw_entry->data[data_offset + sizeof(STIR421X_PATCH_FILE_IMAGE_MAX_OFFSET)],
fw_entry->size - (data_offset + sizeof(STIR421X_PATCH_FILE_IMAGE_MAX_OFFSET)));
release_firmware(fw_entry);
return ret;
}
/********************** IRDA DEVICE CALLBACKS **********************/
/*
* Main calls from the IrDA/Network subsystem.
@ -972,6 +1242,11 @@ static int irda_usb_net_open(struct net_device *netdev)
return -1;
}
if(self->needspatch) {
IRDA_WARNING("%s(), device needs patch\n", __FUNCTION__) ;
return -EIO ;
}
/* Initialise default speed and xbofs value
* (IrLAP will change that soon) */
self->speed = -1;
@ -1050,7 +1325,7 @@ static int irda_usb_net_close(struct net_device *netdev)
del_timer(&self->rx_defer_timer);
/* Deallocate all the Rx path buffers (URBs and skb) */
for (i = 0; i < IU_MAX_RX_URBS; i++) {
for (i = 0; i < self->max_rx_urb; i++) {
struct urb *urb = self->rx_urb[i];
struct sk_buff *skb = (struct sk_buff *) urb->context;
/* Cancel the receive command */
@ -1426,8 +1701,22 @@ static int irda_usb_probe(struct usb_interface *intf,
spin_lock_init(&self->lock);
init_timer(&self->rx_defer_timer);
self->capability = id->driver_info;
self->needspatch = ((self->capability & IUC_STIR_4210) != 0) ;
/* Create all of the needed urbs */
for (i = 0; i < IU_MAX_RX_URBS; i++) {
if (self->capability & IUC_STIR_4210) {
self->max_rx_urb = IU_SIGMATEL_MAX_RX_URBS;
self->header_length = USB_IRDA_SIGMATEL_HEADER;
} else {
self->max_rx_urb = IU_MAX_RX_URBS;
self->header_length = USB_IRDA_HEADER;
}
self->rx_urb = kzalloc(self->max_rx_urb * sizeof(struct urb *),
GFP_KERNEL);
for (i = 0; i < self->max_rx_urb; i++) {
self->rx_urb[i] = usb_alloc_urb(0, GFP_KERNEL);
if (!self->rx_urb[i]) {
goto err_out_1;
@ -1479,17 +1768,28 @@ static int irda_usb_probe(struct usb_interface *intf,
goto err_out_3;
}
self->usbdev = dev;
/* Find IrDA class descriptor */
irda_desc = irda_usb_find_class_desc(intf);
ret = -ENODEV;
if (irda_desc == NULL)
goto err_out_3;
if (self->needspatch) {
ret = usb_control_msg (self->usbdev, usb_sndctrlpipe (self->usbdev, 0),
0x02, 0x40, 0, 0, 0, 0, msecs_to_jiffies(500));
if (ret < 0) {
IRDA_DEBUG (0, "usb_control_msg failed %d\n", ret);
goto err_out_3;
} else {
mdelay(10);
}
}
self->irda_desc = irda_desc;
self->present = 1;
self->netopen = 0;
self->capability = id->driver_info;
self->usbdev = dev;
self->usbintf = intf;
/* Allocate the buffer for speed changes */
@ -1508,6 +1808,28 @@ static int irda_usb_probe(struct usb_interface *intf,
IRDA_MESSAGE("IrDA: Registered device %s\n", net->name);
usb_set_intfdata(intf, self);
if (self->needspatch) {
/* Now we fetch and upload the firmware patch */
ret = stir421x_patch_device(self);
self->needspatch = (ret < 0);
if (ret < 0) {
printk("patch_device failed\n");
goto err_out_4;
}
/* replace IrDA class descriptor with what patched device is now reporting */
irda_desc = irda_usb_find_class_desc (self->usbintf);
if (irda_desc == NULL) {
ret = -ENODEV;
goto err_out_4;
}
if (self->irda_desc)
kfree (self->irda_desc);
self->irda_desc = irda_desc;
irda_usb_init_qos(self);
}
return 0;
err_out_4:
@ -1518,7 +1840,7 @@ err_out_3:
err_out_2:
usb_free_urb(self->tx_urb);
err_out_1:
for (i = 0; i < IU_MAX_RX_URBS; i++) {
for (i = 0; i < self->max_rx_urb; i++) {
if (self->rx_urb[i])
usb_free_urb(self->rx_urb[i]);
}
@ -1571,7 +1893,7 @@ static void irda_usb_disconnect(struct usb_interface *intf)
/*netif_device_detach(self->netdev);*/
netif_stop_queue(self->netdev);
/* Stop all the receive URBs. Must be synchronous. */
for (i = 0; i < IU_MAX_RX_URBS; i++)
for (i = 0; i < self->max_rx_urb; i++)
usb_kill_urb(self->rx_urb[i]);
/* Cancel Tx and speed URB.
* Make sure it's synchronous to avoid races. */
@ -1586,8 +1908,9 @@ static void irda_usb_disconnect(struct usb_interface *intf)
self->usbintf = NULL;
/* Clean up our urbs */
for (i = 0; i < IU_MAX_RX_URBS; i++)
for (i = 0; i < self->max_rx_urb; i++)
usb_free_urb(self->rx_urb[i]);
kfree(self->rx_urb);
/* Clean up Tx and speed URB */
usb_free_urb(self->tx_urb);
usb_free_urb(self->speed_urb);
@ -1648,6 +1971,6 @@ module_exit(usb_irda_cleanup);
*/
module_param(qos_mtt_bits, int, 0);
MODULE_PARM_DESC(qos_mtt_bits, "Minimum Turn Time");
MODULE_AUTHOR("Roman Weissgaerber <weissg@vienna.at>, Dag Brattli <dag@brattli.net> and Jean Tourrilhes <jt@hpl.hp.com>");
MODULE_DESCRIPTION("IrDA-USB Dongle Driver");
MODULE_AUTHOR("Roman Weissgaerber <weissg@vienna.at>, Dag Brattli <dag@brattli.net>, Jean Tourrilhes <jt@hpl.hp.com> and Nick Fedchik <nick@fedchik.org.ua>");
MODULE_DESCRIPTION("IrDA-USB Dongle Driver");
MODULE_LICENSE("GPL");

43
drivers/net/irda/irda-usb.h
View File

@ -1,7 +1,7 @@
/*****************************************************************************
*
* Filename: irda-usb.h
* Version: 0.9b
* Version: 0.10
* Description: IrDA-USB Driver
* Status: Experimental
* Author: Dag Brattli <dag@brattli.net>
@ -9,6 +9,9 @@
* Copyright (C) 2001, Roman Weissgaerber <weissg@vienna.at>
* Copyright (C) 2000, Dag Brattli <dag@brattli.net>
* Copyright (C) 2001, Jean Tourrilhes <jt@hpl.hp.com>
* Copyright (C) 2004, SigmaTel, Inc. <irquality@sigmatel.com>
* Copyright (C) 2005, Milan Beno <beno@pobox.sk>
* Copyright (C) 2006, Nick FEdchik <nick@fedchik.org.ua>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@ -31,6 +34,9 @@
#include <net/irda/irda.h>
#include <net/irda/irda_device.h> /* struct irlap_cb */
#define PATCH_FILE_SIZE_MAX 65536
#define PATCH_FILE_SIZE_MIN 80
#define RX_COPY_THRESHOLD 200
#define IRDA_USB_MAX_MTU 2051
#define IRDA_USB_SPEED_MTU 64 /* Weird, but work like this */
@ -79,15 +85,16 @@
/* Inbound header */
#define MEDIA_BUSY 0x80
#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
#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
#define SPEED_16000000 0x0a
/* Basic capabilities */
#define IUC_DEFAULT 0x00 /* Basic device compliant with 1.0 spec */
@ -100,11 +107,14 @@
#define IUC_SMALL_PKT 0x10 /* Device doesn't behave with big Rx packets */
#define IUC_MAX_WINDOW 0x20 /* Device underestimate the Rx window */
#define IUC_MAX_XBOFS 0x40 /* Device need more xbofs than advertised */
#define IUC_STIR_4210 0x80 /* SigmaTel 4210/4220/4116 VFIR */
/* USB class definitions */
#define USB_IRDA_HEADER 0x01
#define USB_CLASS_IRDA 0x02 /* USB_CLASS_APP_SPEC subclass */
#define USB_DT_IRDA 0x21
#define USB_IRDA_HEADER 0x01
#define USB_CLASS_IRDA 0x02 /* USB_CLASS_APP_SPEC subclass */
#define USB_DT_IRDA 0x21
#define USB_IRDA_SIGMATEL_HEADER 0x03
#define IU_SIGMATEL_MAX_RX_URBS (IU_MAX_ACTIVE_RX_URBS + USB_IRDA_SIGMATEL_HEADER)
struct irda_class_desc {
__u8 bLength;
@ -123,6 +133,7 @@ struct irda_class_desc {
* (6.2.5, USB-IrDA class spec 1.0) */
#define IU_REQ_GET_CLASS_DESC 0x06
#define STIR421X_MAX_PATCH_DOWNLOAD_SIZE 1023
struct irda_usb_cb {
struct irda_class_desc *irda_desc;
@ -136,7 +147,8 @@ struct irda_usb_cb {
__u16 bulk_out_mtu; /* Max Tx packet size in bytes */
__u8 bulk_int_ep; /* Interrupt Endpoint assignments */
struct urb *rx_urb[IU_MAX_RX_URBS]; /* URBs used to receive data frames */
__u8 max_rx_urb;
struct urb **rx_urb; /* URBs used to receive data frames */
struct urb *idle_rx_urb; /* Pointer to idle URB in Rx path */
struct urb *tx_urb; /* URB used to send data frames */
struct urb *speed_urb; /* URB used to send speed commands */
@ -157,6 +169,9 @@ struct irda_usb_cb {
__u32 speed; /* Current speed */
__s32 new_speed; /* speed we need to set */
__u8 header_length; /* USB-IrDA frame header size */
int needspatch; /* device needs firmware patch */
struct timer_list rx_defer_timer; /* Wait for Rx error to clear */
};