add idl4k kernel firmware version 1.13.0.105

kernel/drivers/char/lirc/Kconfig

@@ -0,0 +1,229 @@
+# LIRC http://lirc.sf.net/
+# Kernel patch by Flameeyes <dgp85@users.sf.net>
+# Check for new patch at http://flameeyes.web.ctonet.it
+#
+# Thanks to Koos Vriezen <koos.vriezen@xs4all.nl> for the Homebrew support.
+# Thanks to Jeff Clark <jeff@tmtrading.com> for support when I wasn't able
+# to update it and for his patch (found at http://www.clarkmania.com/~jclark/
+# Thanks to Bernhard Rosenkraenzer <bero@arklinux.org> for SMP patch.
+# Thanks to Vince <fuzzy77@free.fr> for the temporary lirc_atiusb driver.
+# Thanks to Paul Miller <pmiller9@users.sourceforge.net> for the new working
+# lirc_atiusb driver.
+
+menu "Linux InfraRed Controller"
+
+config LIRC_SUPPORT
+	tristate "Linux InfraRed Controller"
+
+	config LIRC_MCEUSB
+		tristate "MCE USB Driver"
+		depends on LIRC_SUPPORT && USB
+		help
+		  USB Microsoft IR Transceiver driver
+
+	config LIRC_MCEUSB2
+		tristate "MCE USB Driver"
+		depends on LIRC_SUPPORT && USB
+		help
+		  LIRC driver for the Philips eHome USB Infrared
+		  Transciever and the Microsoft MCE 2005 Remote Control
+
+	config LIRC_SERIAL
+		tristate "Serial Driver"
+		depends on LIRC_SUPPORT && SERIAL_8250
+
+		choice
+			prompt "Serial Receiver Type"
+			depends on LIRC_SERIAL
+
+			config LIRC_HOMEBREW
+				bool "Homebrew"
+
+			config LIRC_SERIAL_ANIMAX
+				bool "Animax"
+
+			config LIRC_SERIAL_IRDEO
+				bool "IRdeo"
+
+			config LIRC_SERIAL_IRDEO_REMOTE
+				bool "IRdeo Remote"
+
+			config LIRC_SERIAL_NSLU2
+				bool "NSLU2"
+
+			config LIRC_SERIAL_IGOR
+				bool "Igor Ceska's variation"
+
+		endchoice
+
+		config LIRC_SERIAL_TRANSMITTER
+			bool "With transmitter diode"
+			depends on LIRC_SERIAL && !LIRC_SERIAL_ANIMAX
+
+		config LIRC_SERIAL_SOFTCARRIER
+			bool "With software carrier"
+			depends on LIRC_SERIAL_TRANSMITTER
+
+		choice
+			prompt "Serial Port"
+			depends on LIRC_SERIAL
+			config LIRC_SERIAL_COM1
+				bool "COM1 (0x3f8, 4)"
+			config LIRC_SERIAL_COM2
+				bool "COM2 (0x2f8, 3)"
+			config LIRC_SERIAL_COM3
+				bool "COM3 (0x3e8, 4)"
+			config LIRC_SERIAL_COM4
+				bool "COM4 (0x2e8, 3)"
+			config LIRC_SERIAL_OTHER
+				bool "Other (custom values)"
+		endchoice
+
+		config LIRC_PORT_SERIAL
+			hex "I/O Port"
+				default "0x3f8" if LIRC_SERIAL_COM1
+				default "0x2f8" if LIRC_SERIAL_COM2
+				default "0x3e8" if LIRC_SERIAL_COM3
+				default "0x2e8" if LIRC_SERIAL_COM4
+			depends on LIRC_SERIAL
+
+		config LIRC_IRQ_SERIAL
+			hex "IRQ"
+				default "4" if LIRC_SERIAL_COM1 || LIRC_SERIAL_COM3
+				default "3" if LIRC_SERIAL_COM2 || LIRC_SERIAL_COM4
+			depends on LIRC_SERIAL
+
+	config LIRC_SIR
+		tristate "SIR Driver"
+		depends on LIRC_SUPPORT
+
+		config LIRC_ON_SA1100
+			bool "LIRC driver for StrongARM SA1100 embedded microprocessor"
+			depends on LIRC_SIR
+
+		choice
+			prompt "SIR Type"
+			depends on LIRC_SIR && !LIRC_ON_SA1100
+
+			config LIRC_SIR_IRDA
+				bool "SIR IrDA (built-in IR ports)"
+
+			config LIRC_SIR_TEKRAM
+				bool "Tekram Irmate 210 (16x50 UART compatible serial port)"
+
+			config LIRC_SIR_ACTISYS_ACT200L
+				bool "Actisys Act200L SIR driver support"
+
+		endchoice
+
+		choice
+			prompt "Serial Port"
+			depends on LIRC_SIR
+			config LIRC_SIR_COM1
+				bool "COM1 (0x3f8, 4)"
+			config LIRC_SIR_COM2
+				bool "COM2 (0x2f8, 3)"
+			config LIRC_SIR_COM3
+				bool "COM3 (0x3e8, 4)"
+			config LIRC_SIR_COM4
+				bool "COM4 (0x2e8, 3)"
+			config LIRC_SIR_OTHER
+				bool "Other (custom values)"
+		endchoice
+
+		config LIRC_PORT_SIR
+			hex "I/O Port"
+				default "0x3f8" if LIRC_SIR_COM1
+				default "0x2f8" if LIRC_SIR_COM2
+				default "0x3e8" if LIRC_SIR_COM3
+				default "0x2e8" if LIRC_SIR_COM4
+			depends on LIRC_SIR
+
+		config LIRC_IRQ_SIR
+			hex "IRQ"
+				default "4" if LIRC_SIR_COM1 || LIRC_SIR_COM3
+				default "3" if LIRC_SIR_COM2 || LIRC_SIR_COM4
+			depends on LIRC_SIR
+
+        config LIRC_STM
+                tristate "STM Driver"
+                depends on LIRC_SUPPORT && CPU_SUBTYPE_ST40
+		help
+		 The IR and UHF RX processors are identical and independent,
+		 except that the IR receiver does not use the noise and
+		 SCD filters. Not all ST platforms support both type of
+		 receivers.
+		 IR RX receiver is the default mode.
+
+		config LIRC_STM_UHF
+			bool "UHF RX receiver processor"
+			depends on LIRC_STM
+			help
+			  Set this option to enable UHF instead of IR remote control input.
+
+			  Note this option has no direct effect in the LiRC driver. It is used by
+			  some boards which have support for both UHF and IR support to set the
+			  configuration parameters passed into the driver. Not all boards have
+			  support for both modes of operation, so this option may have no effect,
+			  and hardware changes (such as changing jumpers) may be required.
+
+	        config LIRC_STM_UHF_SCD
+		        bool "Start Code Detector - SCD"
+			depends on LIRC_STM_UHF
+			default n
+			help
+			  This causes the driver to use SCD on UHF RX mode.
+			  The start code detector detects any programmable start
+			  code on UHF RX input. It works on a time unit called
+			  symbol time. One graphical example to understand how to
+			  configure properly the code, code length and nominal time
+			  values based on Remote Control signals train can be found in
+			  drivers/char/lirc/lirc_stm.c driver.
+
+	        config LIRC_STM_UHF_SCD_CODE
+			hex "Normal code to be detected"
+			default "0x3FFFC028"
+			depends on LIRC_STM_UHF_SCD
+			help
+			 The primary RC to be detected.
+			 Default value for Futarque RC is 0x3FFFC028.
+
+	        config LIRC_STM_UHF_SCD_ALTCODE
+			hex "Alternative code to be detected"
+			default "0x0"
+			depends on LIRC_STM_UHF_SCD
+			help
+			 The second RC to be detected as alternative of the primary.
+			 The primary must be always setup before the use this.
+
+	        config LIRC_STM_UHF_SCD_NTIME
+			hex "Nominal time for a symbol"
+				default "0x1f4"
+			depends on LIRC_STM_UHF_SCD
+			help
+			 Default value for Futarque RC is 0x1f4. The nominal time
+			 is the same for normal and alternative symbols calculation.
+
+		config LIRC_STM_TX
+			depends on LIRC_STM
+			bool "IRB TX transmitter processor"
+			default n
+			help
+			 Say yes if you want enable IR transmission. The IR TX processor is
+			 independent of IR RX mode.
+
+	config LIRC_STM_DEBUG
+		depends on LIRC_STM
+		bool "Driver debug"
+		default n
+		help
+		  Say yes if you want enable some debug printk information
+
+	config LIRC_TTUSBIR
+	        tristate "Technotrend USB IR Receiver"
+	        depends on LIRC_SUPPORT && USB
+	        help
+	          Driver for the Technotrend USB IR Receiver
+
+endmenu
+

kernel/drivers/char/lirc/Makefile

@@ -0,0 +1,13 @@
+#
+# Makefile for LIRC drivers
+#
+# Copyright (C) 2004-2009 STMicroelectronics
+# Author  Angelo Castello <angelo.castello@st.com>
+
+obj-$(CONFIG_LIRC_SUPPORT) += lirc_dev.o
+obj-$(CONFIG_LIRC_MCEUSB2) += lirc_mceusb2.o
+obj-$(CONFIG_LIRC_MCEUSB) += lirc_mceusb.o
+obj-$(CONFIG_LIRC_SERIAL) += lirc_serial.o
+obj-$(CONFIG_LIRC_SIR) += lirc_sir.o
+obj-$(CONFIG_LIRC_STM) += lirc_stm.o
+obj-$(CONFIG_LIRC_TTUSBIR) += lirc_ttusbir.o

kernel/drivers/char/lirc/kcompat.h

@@ -0,0 +1,402 @@
+/*      $Id: kcompat.h,v 5.44 2009/03/22 08:45:47 lirc Exp $      */
+
+#ifndef _KCOMPAT_H
+#define _KCOMPAT_H
+
+#include <linux/version.h>
+
+#ifndef __func__
+#define __func__ __FUNCTION__
+#endif
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 16)
+#define LIRC_THIS_MODULE(x) x,
+#else /* >= 2.6.16 */
+#define LIRC_THIS_MODULE(x)
+#endif
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 0)
+
+#include <linux/device.h>
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 18)
+#define LIRC_HAVE_DEVFS
+#define LIRC_HAVE_DEVFS_26
+#endif
+
+#define LIRC_HAVE_SYSFS
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 13)
+
+typedef struct class_simple lirc_class_t;
+
+static inline lirc_class_t *class_create(struct module *owner, char *name)
+{
+	return class_simple_create(owner, name);
+}
+
+static inline void class_destroy(lirc_class_t *cls)
+{
+	class_simple_destroy(cls);
+}
+
+#define lirc_device_create(cs, parent, dev, drvdata, fmt, args...) \
+	class_simple_device_add(cs, dev, parent, fmt, ## args)
+
+static inline void lirc_device_destroy(lirc_class_t *cls, dev_t devt)
+{
+	class_simple_device_remove(devt);
+}
+
+#else /* >= 2.6.13 */
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 15)
+
+#define lirc_device_create(cs, parent, dev, drvdata, fmt, args...) \
+	class_device_create(cs, dev, parent, fmt, ## args)
+
+#else /* >= 2.6.15 */
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 26)
+
+#define lirc_device_create(cs, parent, dev, drvdata, fmt, args...) \
+	class_device_create(cs, NULL, dev, parent, fmt, ## args)
+
+#else /* >= 2.6.26 */
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 27)
+
+#define lirc_device_create(cs, parent, dev, drvdata, fmt, args...) \
+	device_create(cs, parent, dev, fmt, ## args)
+
+#else /* >= 2.6.27 */
+
+#define lirc_device_create device_create
+
+#endif /* >= 2.6.27 */
+
+#endif /* >= 2.6.26 */
+
+#define LIRC_DEVFS_PREFIX
+
+#endif /* >= 2.6.15 */
+
+typedef struct class lirc_class_t;
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 26)
+
+#define lirc_device_destroy class_device_destroy
+
+#else
+
+#define lirc_device_destroy device_destroy
+
+#endif
+
+#endif /* >= 2.6.13 */
+
+#elif LINUX_VERSION_CODE >= KERNEL_VERSION(2, 4, 0)
+#define LIRC_HAVE_DEVFS
+#define LIRC_HAVE_DEVFS_24
+#endif
+
+#ifndef LIRC_DEVFS_PREFIX
+#define LIRC_DEVFS_PREFIX "usb/"
+#endif
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 3, 0)
+#include <linux/timer.h>
+#include <linux/interrupt.h>
+static inline void del_timer_sync(struct timer_list *timerlist)
+{
+	start_bh_atomic();
+	del_timer(timerlist);
+	end_bh_atomic();
+}
+#endif
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 0)
+#ifdef daemonize
+#undef daemonize
+#endif
+#define daemonize(name) do {		\
+					\
+	lock_kernel();			\
+					\
+	exit_mm(current);		\
+	exit_files(current);		\
+	exit_fs(current);		\
+	current->session = 1;		\
+	current->pgrp = 1;		\
+	current->euid = 0;		\
+	current->tty = NULL;		\
+	sigfillset(&current->blocked);	\
+					\
+	strcpy(current->comm, name);	\
+					\
+	unlock_kernel();		\
+					\
+} while (0)
+
+/* Not sure when this was introduced, sometime during 2.5.X */
+#define MODULE_PARM_int(x) MODULE_PARM(x, "i")
+#define MODULE_PARM_bool(x) MODULE_PARM(x, "i")
+#define MODULE_PARM_long(x) MODULE_PARM(x, "l")
+#define module_param(x, y, z) MODULE_PARM_##y(x)
+#else
+#include <linux/moduleparam.h>
+#endif /* Linux < 2.6.0 */
+
+/* DevFS header */
+#if defined(LIRC_HAVE_DEVFS)
+#include <linux/devfs_fs_kernel.h>
+#endif
+
+#ifdef LIRC_HAVE_DEVFS_24
+#ifdef register_chrdev
+#undef register_chrdev
+#endif
+#define register_chrdev devfs_register_chrdev
+#ifdef unregister_chrdev
+#undef unregister_chrdev
+#endif
+#define unregister_chrdev devfs_unregister_chrdev
+#endif /* DEVFS 2.4 */
+
+#ifndef LIRC_HAVE_SYSFS
+#define class_destroy(x) do { } while (0)
+#define class_create(x, y) NULL
+#define lirc_device_destroy(x, y) do { } while (0)
+#define lirc_device_create(x, y, z, xx, yy, zz) 0
+#define IS_ERR(x) 0
+typedef struct class_simple
+{
+	int notused;
+} lirc_class_t;
+#endif /* No SYSFS */
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 5, 0)
+#define KERNEL_2_5
+
+/*
+ * We still are using MOD_INC_USE_COUNT/MOD_DEC_USE_COUNT in the set_use_inc
+ * function of all modules for 2.4 kernel compatibility.
+ *
+ * For 2.6 kernels reference counting is done in lirc_dev by
+ * try_module_get()/module_put() because the old approach is racy.
+ *
+ */
+#ifdef MOD_INC_USE_COUNT
+#undef MOD_INC_USE_COUNT
+#endif
+#define MOD_INC_USE_COUNT
+
+#ifdef MOD_DEC_USE_COUNT
+#undef MOD_DEC_USE_COUNT
+#endif
+#define MOD_DEC_USE_COUNT
+
+#ifdef EXPORT_NO_SYMBOLS
+#undef EXPORT_NO_SYMBOLS
+#endif
+#define EXPORT_NO_SYMBOLS
+
+#else  /* Kernel < 2.5.0 */
+
+static inline int try_module_get(struct module *module)
+{
+	return 1;
+}
+
+static inline void module_put(struct module *module)
+{
+}
+
+#endif /* Kernel >= 2.5.0 */
+
+#ifndef MODULE_LICENSE
+#define MODULE_LICENSE(x)
+#endif
+
+#ifndef MODULE_PARM_DESC
+#define MODULE_PARM_DESC(x, y)
+#endif
+
+#ifndef MODULE_ALIAS_CHARDEV_MAJOR
+#define MODULE_ALIAS_CHARDEV_MAJOR(x)
+#endif
+
+#ifndef MODULE_DEVICE_TABLE
+#define MODULE_DEVICE_TABLE(x, y)
+#endif
+
+#include <linux/interrupt.h>
+#ifndef IRQ_RETVAL
+typedef void irqreturn_t;
+#define IRQ_NONE
+#define IRQ_HANDLED
+#define IRQ_RETVAL(x)
+#endif
+
+#ifndef MOD_IN_USE
+#ifdef CONFIG_MODULE_UNLOAD
+#define MOD_IN_USE module_refcount(THIS_MODULE)
+#else
+#error "LIRC modules currently require"
+#error "  'Loadable module support  --->  Module unloading'"
+#error "to be enabled in the kernel"
+#endif
+#endif
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 18)
+#if !defined(local_irq_save)
+#define local_irq_save(flags) do { save_flags(flags); cli(); } while (0)
+#endif
+#if !defined(local_irq_restore)
+#define local_irq_restore(flags) do { restore_flags(flags); } while (0)
+#endif
+#endif
+
+#if KERNEL_VERSION(2, 4, 0) <= LINUX_VERSION_CODE
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 4, 22)
+#include <linux/pci.h>
+static inline char *pci_name(struct pci_dev *pdev)
+{
+	return pdev->slot_name;
+}
+#endif /* kernel < 2.4.22 */
+#endif /* kernel >= 2.4.0 */
+
+/*************************** I2C specific *****************************/
+#include <linux/i2c.h>
+
+#ifndef I2C_CLIENT_END
+#error "********************************************************"
+#error " Sorry, this driver needs the new I2C stack.            "
+#error " You can get it at http://www2.lm-sensors.nu/~lm78/.    "
+#error "********************************************************"
+#endif
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 5, 0)
+
+#undef i2c_get_clientdata
+#define i2c_get_clientdata(client) ((client)->data)
+
+
+#undef i2c_set_clientdata
+#define i2c_set_clientdata(client_ptr, new_data) do { \
+	(client_ptr)->data = new_data; \
+} while (0)
+
+
+#endif
+
+/* removed in 2.6.14 */
+#ifndef I2C_ALGO_BIT
+#   define I2C_ALGO_BIT 0
+#endif
+
+/* removed in 2.6.16 */
+#ifndef I2C_DRIVERID_EXP3
+#  define I2C_DRIVERID_EXP3 0xf003
+#endif
+
+/*************************** USB specific *****************************/
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 4, 0)
+#include <linux/usb.h>
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 8)
+static inline int usb_kill_urb(struct urb *urb)
+{
+	return usb_unlink_urb(urb);
+}
+#endif
+
+/* removed in 2.6.14 */
+#ifndef URB_ASYNC_UNLINK
+#define URB_ASYNC_UNLINK 0
+#endif
+#endif
+
+/*************************** bttv specific ****************************/
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 15) /* BTTV_* -> BTTV_BOARD_* */
+#define BTTV_BOARD_UNKNOWN         BTTV_UNKNOWN
+#define BTTV_BOARD_PXELVWPLTVPAK   BTTV_PXELVWPLTVPAK
+#define BTTV_BOARD_PXELVWPLTVPRO   BTTV_PXELVWPLTVPRO
+#define BTTV_BOARD_PV_BT878P_9B    BTTV_PV_BT878P_9B
+#define BTTV_BOARD_PV_BT878P_PLUS  BTTV_PV_BT878P_PLUS
+#define BTTV_BOARD_AVERMEDIA       BTTV_AVERMEDIA
+#define BTTV_BOARD_AVPHONE98       BTTV_AVPHONE98
+#define BTTV_BOARD_AVERMEDIA98     BTTV_AVERMEDIA98
+#define BTTV_BOARD_CHRONOS_VS2     BTTV_CHRONOS_VS2
+#define BTTV_BOARD_MIRO            BTTV_MIRO
+#define BTTV_BOARD_DYNALINK        BTTV_DYNALINK
+#define BTTV_BOARD_WINVIEW_601     BTTV_WINVIEW_601
+#ifdef BTTV_KWORLD
+#define BTTV_BOARD_KWORLD          BTTV_KWORLD
+#endif
+#define BTTV_BOARD_MAGICTVIEW061   BTTV_MAGICTVIEW061
+#define BTTV_BOARD_MAGICTVIEW063   BTTV_MAGICTVIEW063
+#define BTTV_BOARD_PHOEBE_TVMAS    BTTV_PHOEBE_TVMAS
+#ifdef BTTV_BESTBUY_EASYTV2
+#define BTTV_BOARD_BESTBUY_EASYTV  BTTV_BESTBUY_EASYTV
+#define BTTV_BOARD_BESTBUY_EASYTV2 BTTV_BESTBUY_EASYTV2
+#endif
+#define BTTV_BOARD_FLYVIDEO        BTTV_FLYVIDEO
+#define BTTV_BOARD_FLYVIDEO_98     BTTV_FLYVIDEO_98
+#define BTTV_BOARD_TYPHOON_TVIEW   BTTV_TYPHOON_TVIEW
+#ifdef BTTV_FLYVIDEO_98FM
+#define BTTV_BOARD_FLYVIDEO_98FM   BTTV_FLYVIDEO_98FM
+#endif
+#define BTTV_BOARD_WINFAST2000     BTTV_WINFAST2000
+#ifdef BTTV_GVBCTV5PCI
+#define BTTV_BOARD_GVBCTV5PCI      BTTV_GVBCTV5PCI
+#endif
+#endif  /* end BTTV_* -> BTTV_BOARD_* */
+
+
+/******************************* pm.h *********************************/
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 0)
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 11)
+typedef u32 pm_message_t;
+#endif /* kernel < 2.6.11 */
+#endif /* kernel >= 2.6.0 */
+
+/*************************** interrupt.h ******************************/
+/* added in 2.6.18, old defines removed in 2.6.24 */
+#ifndef IRQF_DISABLED
+#define IRQF_DISABLED SA_INTERRUPT
+#endif
+#ifndef IRQF_SHARED
+#define IRQF_SHARED SA_SHIRQ
+#endif
+
+/*************************** spinlock.h *******************************/
+/* added in 2.6.11 */
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 11)
+#define DEFINE_SPINLOCK(x) spinlock_t x = SPIN_LOCK_UNLOCKED
+#endif
+
+/***************************** slab.h *********************************/
+/* added in 2.6.14 */
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 14)
+static inline void *kzalloc(size_t size, gfp_t flags)
+{
+        void *ret = kmalloc(size, flags);
+        if (ret)
+                memset(ret, 0, size);
+        return ret;
+}
+#endif
+
+/****************************** fs.h **********************************/
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 0)
+static inline unsigned iminor(struct inode *inode)
+{
+	return MINOR(inode->i_rdev);
+}
+#endif
+
+#endif /* _KCOMPAT_H */

kernel/drivers/char/lirc/lirc_dev.h

@@ -0,0 +1,344 @@
+/*
+ * LIRC base driver
+ *
+ * (L) by Artur Lipowski <alipowski@interia.pl>
+ *        This code is licensed under GNU GPL
+ *
+ * $Id: lirc_dev.h,v 1.37 2009/03/15 09:34:00 lirc Exp $
+ *
+ */
+
+#ifndef _LINUX_LIRC_DEV_H
+#define _LINUX_LIRC_DEV_H
+
+#include <linux/version.h>
+#define LIRC_REMOVE_DURING_EXPORT
+#ifndef LIRC_REMOVE_DURING_EXPORT
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 11)
+/* when was it really introduced? */
+#define LIRC_HAVE_KFIFO
+#endif
+#endif
+#define MAX_IRCTL_DEVICES 4
+#define BUFLEN            16
+
+#define mod(n, div) ((n) % (div))
+
+#include <linux/slab.h>
+#include <linux/fs.h>
+#ifdef LIRC_HAVE_KFIFO
+#include <linux/kfifo.h>
+#endif
+
+struct lirc_buffer {
+	wait_queue_head_t wait_poll;
+	spinlock_t lock;
+	unsigned int chunk_size;
+	unsigned int size; /* in chunks */
+	/* Using chunks instead of bytes pretends to simplify boundary checking
+	 * And should allow for some performance fine tunning later */
+#ifdef LIRC_HAVE_KFIFO
+	struct kfifo *fifo;
+#else
+	unsigned int fill; /* in chunks */
+	int head, tail;    /* in chunks */
+	unsigned char *data;
+#endif
+};
+#ifndef LIRC_HAVE_KFIFO
+static inline void lirc_buffer_lock(struct lirc_buffer *buf,
+				    unsigned long *flags)
+{
+	spin_lock_irqsave(&buf->lock, *flags);
+}
+static inline void lirc_buffer_unlock(struct lirc_buffer *buf,
+				      unsigned long *flags)
+{
+	spin_unlock_irqrestore(&buf->lock, *flags);
+}
+static inline void _lirc_buffer_clear(struct lirc_buffer *buf)
+{
+	buf->head = 0;
+	buf->tail = 0;
+	buf->fill = 0;
+}
+#endif
+static inline void lirc_buffer_clear(struct lirc_buffer *buf)
+{
+#ifdef LIRC_HAVE_KFIFO
+	if (buf->fifo)
+		kfifo_reset(buf->fifo);
+#else
+	unsigned long flags;
+	lirc_buffer_lock(buf, &flags);
+	_lirc_buffer_clear(buf);
+	lirc_buffer_unlock(buf, &flags);
+#endif
+}
+static inline int lirc_buffer_init(struct lirc_buffer *buf,
+				    unsigned int chunk_size,
+				    unsigned int size)
+{
+	init_waitqueue_head(&buf->wait_poll);
+	spin_lock_init(&buf->lock);
+#ifndef LIRC_HAVE_KFIFO
+	_lirc_buffer_clear(buf);
+#endif
+	buf->chunk_size = chunk_size;
+	buf->size = size;
+#ifdef LIRC_HAVE_KFIFO
+	buf->fifo = kfifo_alloc(size*chunk_size, GFP_KERNEL, &buf->lock);
+	if (!buf->fifo)
+		return -ENOMEM;
+#else
+	buf->data = kmalloc(size*chunk_size, GFP_KERNEL);
+	if (buf->data == NULL)
+		return -ENOMEM;
+	memset(buf->data, 0, size*chunk_size);
+#endif
+	return 0;
+}
+static inline void lirc_buffer_free(struct lirc_buffer *buf)
+{
+#ifdef LIRC_HAVE_KFIFO
+	if (buf->fifo)
+		kfifo_free(buf->fifo);
+#else
+	kfree(buf->data);
+	buf->data = NULL;
+	buf->head = 0;
+	buf->tail = 0;
+	buf->fill = 0;
+	buf->chunk_size = 0;
+	buf->size = 0;
+#endif
+}
+#ifndef LIRC_HAVE_KFIFO
+static inline int  _lirc_buffer_full(struct lirc_buffer *buf)
+{
+	return (buf->fill >= buf->size);
+}
+#endif
+static inline int  lirc_buffer_full(struct lirc_buffer *buf)
+{
+#ifdef LIRC_HAVE_KFIFO
+	return kfifo_len(buf->fifo) == buf->size * buf->chunk_size;
+#else
+	unsigned long flags;
+	int ret;
+	lirc_buffer_lock(buf, &flags);
+	ret = _lirc_buffer_full(buf);
+	lirc_buffer_unlock(buf, &flags);
+	return ret;
+#endif
+}
+#ifndef LIRC_HAVE_KFIFO
+static inline int  _lirc_buffer_empty(struct lirc_buffer *buf)
+{
+	return !(buf->fill);
+}
+#endif
+static inline int  lirc_buffer_empty(struct lirc_buffer *buf)
+{
+#ifdef LIRC_HAVE_KFIFO
+	return !kfifo_len(buf->fifo);
+#else
+	unsigned long flags;
+	int ret;
+	lirc_buffer_lock(buf, &flags);
+	ret = _lirc_buffer_empty(buf);
+	lirc_buffer_unlock(buf, &flags);
+	return ret;
+#endif
+}
+#ifndef LIRC_HAVE_KFIFO
+static inline int  _lirc_buffer_available(struct lirc_buffer *buf)
+{
+	return (buf->size - buf->fill);
+}
+#endif
+static inline int  lirc_buffer_available(struct lirc_buffer *buf)
+{
+#ifdef LIRC_HAVE_KFIFO
+	return buf->size - (kfifo_len(buf->fifo) / buf->chunk_size);
+#else
+	unsigned long flags;
+	int ret;
+	lirc_buffer_lock(buf, &flags);
+	ret = _lirc_buffer_available(buf);
+	lirc_buffer_unlock(buf, &flags);
+	return ret;
+#endif
+}
+#ifndef LIRC_HAVE_KFIFO
+static inline void _lirc_buffer_read_1(struct lirc_buffer *buf,
+				       unsigned char *dest)
+{
+	memcpy(dest, &buf->data[buf->head*buf->chunk_size], buf->chunk_size);
+	buf->head = mod(buf->head+1, buf->size);
+	buf->fill -= 1;
+}
+#endif
+static inline void lirc_buffer_read(struct lirc_buffer *buf,
+				    unsigned char *dest)
+{
+#ifdef LIRC_HAVE_KFIFO
+	if (kfifo_len(buf->fifo) >= buf->chunk_size)
+		kfifo_get(buf->fifo, dest, buf->chunk_size);
+#else
+	unsigned long flags;
+	lirc_buffer_lock(buf, &flags);
+	_lirc_buffer_read_1(buf, dest);
+	lirc_buffer_unlock(buf, &flags);
+#endif
+}
+#ifndef LIRC_HAVE_KFIFO
+static inline void _lirc_buffer_write_1(struct lirc_buffer *buf,
+				      unsigned char *orig)
+{
+	memcpy(&buf->data[buf->tail*buf->chunk_size], orig, buf->chunk_size);
+	buf->tail = mod(buf->tail+1, buf->size);
+	buf->fill++;
+}
+#endif
+static inline void lirc_buffer_write(struct lirc_buffer *buf,
+				     unsigned char *orig)
+{
+#ifdef LIRC_HAVE_KFIFO
+	kfifo_put(buf->fifo, orig, buf->chunk_size);
+#else
+	unsigned long flags;
+	lirc_buffer_lock(buf, &flags);
+	_lirc_buffer_write_1(buf, orig);
+	lirc_buffer_unlock(buf, &flags);
+#endif
+}
+#ifndef LIRC_HAVE_KFIFO
+static inline void _lirc_buffer_write_n(struct lirc_buffer *buf,
+					unsigned char *orig, int count)
+{
+	int space1;
+	if (buf->head > buf->tail)
+		space1 = buf->head - buf->tail;
+	else
+		space1 = buf->size - buf->tail;
+
+	if (count > space1) {
+		memcpy(&buf->data[buf->tail * buf->chunk_size], orig,
+		       space1 * buf->chunk_size);
+		memcpy(&buf->data[0], orig + (space1 * buf->chunk_size),
+		       (count - space1) * buf->chunk_size);
+	} else {
+		memcpy(&buf->data[buf->tail * buf->chunk_size], orig,
+		       count * buf->chunk_size);
+	}
+	buf->tail = mod(buf->tail + count, buf->size);
+	buf->fill += count;
+}
+#endif
+static inline void lirc_buffer_write_n(struct lirc_buffer *buf,
+				       unsigned char *orig, int count)
+{
+#ifdef LIRC_HAVE_KFIFO
+	kfifo_put(buf->fifo, orig, count * buf->chunk_size);
+#else
+	unsigned long flags;
+	lirc_buffer_lock(buf, &flags);
+	_lirc_buffer_write_n(buf, orig, count);
+	lirc_buffer_unlock(buf, &flags);
+#endif
+}
+
+struct lirc_driver {
+	char name[40];
+	int minor;
+	unsigned long code_length;
+	unsigned int buffer_size; /* in chunks holding one code each */
+	int sample_rate;
+	unsigned long features;
+	void *data;
+	int (*add_to_buf) (void *data, struct lirc_buffer *buf);
+#ifndef LIRC_REMOVE_DURING_EXPORT
+	wait_queue_head_t* (*get_queue) (void *data);
+#endif
+	struct lirc_buffer *rbuf;
+	int (*set_use_inc) (void *data);
+	void (*set_use_dec) (void *data);
+	struct file_operations *fops;
+	struct device *dev;
+	struct module *owner;
+};
+/* name:
+ * this string will be used for logs
+ *
+ * minor:
+ * indicates minor device (/dev/lirc) number for registered driver
+ * if caller fills it with negative value, then the first free minor
+ * number will be used (if available)
+ *
+ * code_length:
+ * length of the remote control key code expressed in bits
+ *
+ * sample_rate:
+ * sample_rate equal to 0 means that no polling will be performed and
+ * add_to_buf will be triggered by external events (through task queue
+ * returned by get_queue)
+ *
+ * data:
+ * it may point to any driver data and this pointer will be passed to
+ * all callback functions
+ *
+ * add_to_buf:
+ * add_to_buf will be called after specified period of the time or
+ * triggered by the external event, this behavior depends on value of
+ * the sample_rate this function will be called in user context. This
+ * routine should return 0 if data was added to the buffer and
+ * -ENODATA if none was available. This should add some number of bits
+ * evenly divisible by code_length to the buffer
+ *
+ * get_queue:
+ * this callback should return a pointer to the task queue which will
+ * be used for external event waiting
+ *
+ * rbuf:
+ * if not NULL, it will be used as a read buffer, you will have to
+ * write to the buffer by other means, like irq's (see also
+ * lirc_serial.c).
+ *
+ * set_use_inc:
+ * set_use_inc will be called after device is opened
+ *
+ * set_use_dec:
+ * set_use_dec will be called after device is closed
+ *
+ * fops:
+ * file_operations for drivers which don't fit the current driver model.
+ *
+ * Some ioctl's can be directly handled by lirc_dev if the driver's
+ * ioctl function is NULL or if it returns -ENOIOCTLCMD (see also
+ * lirc_serial.c).
+ *
+ * owner:
+ * the module owning this struct
+ *
+ */
+
+
+/* following functions can be called ONLY from user context
+ *
+ * returns negative value on error or minor number
+ * of the registered device if success
+ * contents of the structure pointed by d is copied
+ */
+extern int lirc_register_driver(struct lirc_driver *d);
+
+/* returns negative value on error or 0 if success
+*/
+extern int lirc_unregister_driver(int minor);
+
+/* Returns the private data stored in the lirc_driver
+ * associated with the given device file pointer.
+ */
+void *lirc_get_pdata(struct file *file);
+
+#endif

kernel/drivers/char/lirc/lirc_mceusb.c

@@ -0,0 +1,867 @@
+/*
+ * USB Microsoft IR Transceiver driver - 0.2
+ *
+ * Copyright (c) 2003-2004 Dan Conti (dconti@acm.wwu.edu)
+ *
+ * The Microsoft IR Transceiver is a neat little IR receiver with two
+ * emitters on it designed for Windows Media Center. This driver might
+ * work for all media center remotes, but I have only tested it with
+ * the philips model. The first revision of this driver only supports
+ * the receive function - the transmit function will be much more
+ * tricky due to the nature of the hardware. Microsoft chose to build
+ * this device inexpensively, therefore making it extra dumb.
+ * There is no interrupt endpoint on this device; all usb traffic
+ * happens over two bulk endpoints. As a result of this, poll() for
+ * this device is an actual hardware poll (instead of a receive queue
+ * check) and is rather expensive.
+ *
+ * All trademarks property of their respective owners.
+ *
+ * TODO
+ *   - Fix up minor number, registration of major/minor with usb subsystem
+ *
+ */
+
+#include <linux/autoconf.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <linux/smp_lock.h>
+#include <linux/usb.h>
+#ifdef KERNEL_2_5
+#include <linux/completion.h>
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 19)
+#include <asm/uaccess.h>
+#else
+#include <linux/uaccess.h>
+#endif
+#else
+#include <linux/spinlock.h>
+#include <linux/list.h>
+#include <linux/fcntl.h>
+#include <linux/poll.h>
+#include <linux/sched.h>
+#include <linux/signal.h>
+#endif
+
+#ifdef CONFIG_USB_DEBUG
+static int debug = 1;
+#else
+static int debug;
+#endif
+
+#include "kcompat.h"
+#include <linux/lirc.h>
+#include "lirc_dev.h"
+
+/* Use our own dbg macro */
+#define dprintk(fmt, args...)				\
+	do {						\
+		if (debug)				\
+			printk(KERN_DEBUG __FILE__ ": "	\
+			       fmt "\n", ## args);	\
+	} while (0)
+
+/* Version Information */
+#define DRIVER_VERSION "v0.2"
+#define DRIVER_AUTHOR "Dan Conti, dconti@acm.wwu.edu"
+#define DRIVER_DESC "USB Microsoft IR Transceiver Driver"
+#define DRIVER_NAME "lirc_mceusb"
+
+/* Define these values to match your device */
+#define USB_MCEUSB_VENDOR_ID	0x045e
+#define USB_MCEUSB_PRODUCT_ID	0x006d
+
+/* table of devices that work with this driver */
+static struct usb_device_id mceusb_table[] = {
+	/* USB Microsoft IR Transceiver */
+	{ USB_DEVICE(USB_MCEUSB_VENDOR_ID, USB_MCEUSB_PRODUCT_ID) },
+	/* Terminating entry */
+	{ }
+};
+
+/* we can have up to this number of device plugged in at once */
+#define MAX_DEVICES		16
+
+/* Structure to hold all of our device specific stuff */
+struct mceusb_device {
+	struct usb_device *udev; /* save off the usb device pointer */
+	struct usb_interface *interface; /* the interface for this device */
+	unsigned char minor;	 /* the starting minor number for this device */
+	unsigned char num_ports; /* the number of ports this device has */
+	char num_interrupt_in;	 /* number of interrupt in endpoints */
+	char num_bulk_in;	 /* number of bulk in endpoints */
+	char num_bulk_out;	 /* number of bulk out endpoints */
+
+	unsigned char *bulk_in_buffer;	/* the buffer to receive data */
+	int bulk_in_size;		/* the size of the receive buffer */
+	__u8 bulk_in_endpointAddr;	/* the address of bulk in endpoint */
+
+	unsigned char *bulk_out_buffer;	/* the buffer to send data */
+	int bulk_out_size;		/* the size of the send buffer */
+	struct urb *write_urb;		/* the urb used to send data */
+	__u8 bulk_out_endpointAddr;	/* the address of bulk out endpoint */
+
+	wait_queue_head_t wait_q; /* for timeouts */
+	struct mutex lock;	/* locks this structure */
+
+	struct lirc_driver *driver;
+
+	lirc_t lircdata[256]; /* place to store data until lirc processes it */
+	int lircidx;		/* current index */
+	int lirccnt;		/* remaining values */
+
+	int usb_valid_bytes_in_bulk_buffer; /* leftover data from prior read */
+	int mce_bytes_left_in_packet;	/* for packets split across reads */
+
+	/* Value to hold the last received space; 0 if last value
+	 * received was a pulse */
+	int last_space;
+
+#ifdef KERNEL_2_5
+	dma_addr_t dma_in;
+	dma_addr_t dma_out;
+#endif
+};
+
+#define MCE_TIME_UNIT 50
+
+/* driver api */
+#ifdef KERNEL_2_5
+static int mceusb_probe(struct usb_interface *interface,
+			const struct usb_device_id *id);
+static void mceusb_disconnect(struct usb_interface *interface);
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 19)
+static void mceusb_write_bulk_callback(struct urb *urb, struct pt_regs *regs);
+#else
+static void mceusb_write_bulk_callback(struct urb *urb);
+#endif
+#else
+static void *mceusb_probe(struct usb_device *dev, unsigned int ifnum,
+			  const struct usb_device_id *id);
+static void mceusb_disconnect(struct usb_device *dev, void *ptr);
+static void mceusb_write_bulk_callback(struct urb *urb);
+#endif
+
+/* read data from the usb bus; convert to mode2 */
+static int msir_fetch_more_data(struct mceusb_device *dev, int dont_block);
+
+/* helper functions */
+static void msir_cleanup(struct mceusb_device *dev);
+static void set_use_dec(void *data);
+static int set_use_inc(void *data);
+
+/* array of pointers to our devices that are currently connected */
+static struct mceusb_device *minor_table[MAX_DEVICES];
+
+/* lock to protect the minor_table structure */
+static DEFINE_MUTEX(minor_table_mutex);
+static void mceusb_setup(struct usb_device *udev);
+
+/* usb specific object needed to register this driver with the usb subsystem */
+static struct usb_driver mceusb_driver = {
+	LIRC_THIS_MODULE(.owner = THIS_MODULE)
+	.name		= DRIVER_NAME,
+	.probe		= mceusb_probe,
+	.disconnect	= mceusb_disconnect,
+	.id_table	= mceusb_table,
+};
+
+static void mceusb_delete(struct mceusb_device *dev)
+{
+	dprintk("%s", __func__);
+	minor_table[dev->minor] = NULL;
+#ifdef KERNEL_2_5
+	usb_buffer_free(dev->udev, dev->bulk_in_size,
+			dev->bulk_in_buffer, dev->dma_in);
+	usb_buffer_free(dev->udev, dev->bulk_out_size,
+			dev->bulk_out_buffer, dev->dma_out);
+#else
+	if (dev->bulk_in_buffer != NULL)
+		kfree(dev->bulk_in_buffer);
+	if (dev->bulk_out_buffer != NULL)
+		kfree(dev->bulk_out_buffer);
+#endif
+	if (dev->write_urb != NULL)
+		usb_free_urb(dev->write_urb);
+	kfree(dev);
+}
+
+static void mceusb_setup(struct usb_device *udev)
+{
+	char data[8];
+	int res;
+
+	memset(data, 0, 8);
+
+	/* Get Status */
+	res = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
+			      USB_REQ_GET_STATUS, USB_DIR_IN,
+			      0, 0, data, 2, HZ * 3);
+
+	/*    res = usb_get_status( udev, 0, 0, data ); */
+	dprintk("%s - res = %d status = 0x%x 0x%x", __func__,
+		res, data[0], data[1]);
+
+	/*
+	 * This is a strange one. They issue a set address to the device
+	 * on the receive control pipe and expect a certain value pair back
+	 */
+	memset(data, 0, 8);
+
+	res = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
+			      5, USB_TYPE_VENDOR, 0, 0,
+			      data, 2, HZ * 3);
+	dprintk("%s - res = %d, devnum = %d", __func__, res, udev->devnum);
+	dprintk("%s - data[0] = %d, data[1] = %d", __func__,
+		data[0], data[1]);
+
+
+	/* set feature */
+	res = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
+			      USB_REQ_SET_FEATURE, USB_TYPE_VENDOR,
+			      0xc04e, 0x0000, NULL, 0, HZ * 3);
+
+	dprintk("%s - res = %d", __func__, res);
+
+	/*
+	 * These two are sent by the windows driver, but stall for
+	 * me. I don't have an analyzer on the Linux side so I can't
+	 * see what is actually different and why the device takes
+	 * issue with them
+	 */
+#if 0
+	/* this is some custom control message they send */
+	res = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
+			      0x04, USB_TYPE_VENDOR,
+			      0x0808, 0x0000, NULL, 0, HZ * 3);
+
+	dprintk("%s - res = %d", __func__, res);
+
+	/* this is another custom control message they send */
+	res = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
+			      0x02, USB_TYPE_VENDOR,
+			      0x0000, 0x0100, NULL, 0, HZ * 3);
+
+	dprintk("%s - res = %d", __func__, res);
+#endif
+}
+
+static void msir_cleanup(struct mceusb_device *dev)
+{
+	memset(dev->bulk_in_buffer, 0, dev->bulk_in_size);
+
+	dev->usb_valid_bytes_in_bulk_buffer = 0;
+
+	dev->last_space = PULSE_MASK;
+
+	dev->mce_bytes_left_in_packet = 0;
+	dev->lircidx = 0;
+	dev->lirccnt = 0;
+	memset(dev->lircdata, 0, sizeof(dev->lircdata));
+}
+
+static int set_use_inc(void *data)
+{
+	MOD_INC_USE_COUNT;
+	return 0;
+}
+
+static void set_use_dec(void *data)
+{
+	MOD_DEC_USE_COUNT;
+}
+
+/*
+ * msir_fetch_more_data
+ *
+ * The goal here is to read in more remote codes from the remote. In
+ * the event that the remote isn't sending us anything, the caller
+ * will block until a key is pressed (i.e. this performs phys read,
+ * filtering, and queueing of data) unless dont_block is set to 1; in
+ * this situation, it will perform a few reads and will exit out if it
+ * does not see any appropriate data
+ *
+ * dev->lock should be locked when this function is called - fine grain
+ * locking isn't really important here anyways
+ *
+ * This routine always returns the number of words available
+ *
+ */
+static int msir_fetch_more_data(struct mceusb_device *dev, int dont_block)
+{
+	int retries = 0;
+	int words_to_read =
+		(sizeof(dev->lircdata)/sizeof(lirc_t)) - dev->lirccnt;
+	int partial, this_read = 0;
+	int bulkidx = 0;
+	int bytes_left_in_packet = 0;
+	signed char *signedp = (signed char *)dev->bulk_in_buffer;
+
+	if (words_to_read == 0)
+		return dev->lirccnt;
+
+	/*
+	 * this forces all existing data to be read by lirc before we
+	 * issue another usb command. this is the only form of
+	 * throttling we have
+	 */
+	if (dev->lirccnt)
+		return dev->lirccnt;
+
+	/* reserve room for our leading space */
+	if (dev->last_space)
+		words_to_read--;
+
+	while (words_to_read) {
+		/* handle signals and USB disconnects */
+		if (signal_pending(current))
+			return dev->lirccnt ? dev->lirccnt : -EINTR;
+
+		bulkidx = 0;
+
+		/* perform data read (phys or from previous buffer) */
+
+		/* use leftovers if present, otherwise perform a read */
+		if (dev->usb_valid_bytes_in_bulk_buffer) {
+			this_read = dev->usb_valid_bytes_in_bulk_buffer;
+			partial = this_read;
+			dev->usb_valid_bytes_in_bulk_buffer = 0;
+		} else {
+			int retval;
+
+			this_read = dev->bulk_in_size;
+			partial = 0;
+			retval = usb_bulk_msg(dev->udev,
+					usb_rcvbulkpipe(dev->udev,
+						dev->bulk_in_endpointAddr),
+					(unsigned char *)dev->bulk_in_buffer,
+					this_read, &partial, HZ*10);
+
+			/*
+			 * retry a few times on overruns; map all
+			 * other errors to -EIO
+			 */
+			if (retval) {
+				if (retval == -EOVERFLOW && retries < 5) {
+					retries++;
+					interruptible_sleep_on_timeout(
+						&dev->wait_q, HZ);
+					continue;
+				} else
+					return -EIO;
+			}
+
+			retries = 0;
+			if (partial)
+				this_read = partial;
+
+			/* skip the header */
+			bulkidx += 2;
+
+			/* check for empty reads (header only) */
+			if (this_read == 2) {
+				/* assume no data */
+				if (dont_block)
+					break;
+
+				/*
+				 * sleep for a bit before performing
+				 * another read
+				 */
+				interruptible_sleep_on_timeout(&dev->wait_q, 1);
+				continue;
+			}
+		}
+
+		/* process data */
+
+		/* at this point this_read is > 0 */
+		while (bulkidx < this_read &&
+		       (words_to_read > (dev->last_space ? 1 : 0))) {
+			/* while( bulkidx < this_read && words_to_read) */
+			int keycode;
+			int pulse = 0;
+
+			/* read packet length if needed */
+			if (!bytes_left_in_packet) {
+				/*
+				 * we assume we are on a packet length
+				 * value. it is possible, in some
+				 * cases, to get a packet that does
+				 * not start with a length, apparently
+				 * due to some sort of fragmenting,
+				 * but occasionally we do not receive
+				 * the second half of a fragment
+				 */
+				bytes_left_in_packet =
+					128 + signedp[bulkidx++];
+
+				/*
+				 * unfortunately rather than keep all
+				 * the data in the packetized format,
+				 * the transceiver sends a trailing 8
+				 * bytes that aren't part of the
+				 * transmission from the remote,
+				 * aren't packetized, and don't really
+				 * have any value. we can basically
+				 * tell we have hit them if 1) we have
+				 * a loooong space currently stored
+				 * up, and 2) the bytes_left value for
+				 * this packet is obviously wrong
+				 */
+				if (bytes_left_in_packet > 4) {
+					if (dev->mce_bytes_left_in_packet) {
+						bytes_left_in_packet =
+						  dev->mce_bytes_left_in_packet;
+						bulkidx--;
+					}
+					bytes_left_in_packet = 0;
+					bulkidx = this_read;
+				}
+
+				/*
+				 * always clear this if we have a
+				 * valid packet
+				 */
+				dev->mce_bytes_left_in_packet = 0;
+
+				/*
+				 * continue here to verify we haven't
+				 * hit the end of the bulk_in
+				 */
+				continue;
+
+			}
+
+			/* generate mode2 */
+
+			keycode = signedp[bulkidx++];
+			if (keycode < 0) {
+				pulse = 1;
+				keycode += 128;
+			}
+			keycode *= MCE_TIME_UNIT;
+
+			bytes_left_in_packet--;
+
+			if (pulse) {
+				if (dev->last_space) {
+					dev->lircdata[dev->lirccnt++] =
+						dev->last_space;
+					dev->last_space = 0;
+					words_to_read--;
+
+					/* clear for the pulse */
+					dev->lircdata[dev->lirccnt] = 0;
+				}
+				dev->lircdata[dev->lirccnt] += keycode;
+				dev->lircdata[dev->lirccnt] |= PULSE_BIT;
+			} else {
+				/*
+				 * on pulse->space transition, add one
+				 * for the existing pulse
+				 */
+				if (dev->lircdata[dev->lirccnt] &&
+				    !dev->last_space) {
+					dev->lirccnt++;
+					words_to_read--;
+				}
+
+				dev->last_space += keycode;
+			}
+		}
+	}
+
+	/* save off some info if we're exiting mid-packet, or with leftovers */
+	if (bytes_left_in_packet)
+		dev->mce_bytes_left_in_packet = bytes_left_in_packet;
+	if (bulkidx < this_read) {
+		dev->usb_valid_bytes_in_bulk_buffer = (this_read - bulkidx);
+		memcpy(dev->bulk_in_buffer, &(dev->bulk_in_buffer[bulkidx]),
+		       dev->usb_valid_bytes_in_bulk_buffer);
+	}
+	return dev->lirccnt;
+}
+
+/**
+ * mceusb_add_to_buf: called by lirc_dev to fetch all available keys
+ * this is used as a polling interface for us: since we set
+ * driver->sample_rate we will periodically get the below call to
+ * check for new data returns 0 on success, or -ENODATA if nothing is
+ * available
+ */
+static int mceusb_add_to_buf(void *data, struct lirc_buffer *buf)
+{
+	struct mceusb_device *dev = (struct mceusb_device *) data;
+
+	mutex_lock(&dev->lock);
+
+	if (!dev->lirccnt) {
+		int res;
+		dev->lircidx = 0;
+
+		res = msir_fetch_more_data(dev, 1);
+
+		if (res == 0)
+			res = -ENODATA;
+		if (res < 0) {
+			mutex_unlock(&dev->lock);
+			return res;
+		}
+	}
+
+	if (dev->lirccnt) {
+		int keys_to_copy;
+
+		/* determine available buffer space and available data */
+		keys_to_copy = lirc_buffer_available(buf);
+		if (keys_to_copy > dev->lirccnt)
+			keys_to_copy = dev->lirccnt;
+
+		lirc_buffer_write_n(buf,
+			(unsigned char *) &(dev->lircdata[dev->lircidx]),
+			keys_to_copy);
+		dev->lircidx += keys_to_copy;
+		dev->lirccnt -= keys_to_copy;
+
+		mutex_unlock(&dev->lock);
+		return 0;
+	}
+
+	mutex_unlock(&dev->lock);
+	return -ENODATA;
+}
+
+#if defined(KERNEL_2_5) && LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 19)
+static void mceusb_write_bulk_callback(struct urb *urb, struct pt_regs *regs)
+#else
+static void mceusb_write_bulk_callback(struct urb *urb)
+#endif
+{
+	struct mceusb_device *dev = (struct mceusb_device *)urb->context;
+
+	dprintk("%s - minor %d", __func__, dev->minor);
+
+	if ((urb->status != -ENOENT) &&
+	    (urb->status != -ECONNRESET)) {
+		dprintk("%s - nonzero write buld status received: %d",
+			__func__, urb->status);
+		return;
+	}
+
+	return;
+}
+
+/**
+ * mceusb_probe
+ *
+ * Called by the usb core when a new device is connected that it
+ * thinks this driver might be interested in.
+ */
+#ifdef KERNEL_2_5
+static int mceusb_probe(struct usb_interface *interface,
+			const struct usb_device_id *id)
+{
+	struct usb_device *udev = interface_to_usbdev(interface);
+	struct usb_host_interface *iface_desc;
+#else
+static void *mceusb_probe(struct usb_device *udev, unsigned int ifnum,
+			  const struct usb_device_id *id)
+{
+	struct usb_interface *interface = &udev->actconfig->interface[ifnum];
+	struct usb_interface_descriptor *iface_desc;
+#endif
+	struct mceusb_device *dev = NULL;
+	struct usb_endpoint_descriptor *endpoint;
+
+	struct lirc_driver *driver;
+
+	int minor;
+	size_t buffer_size;
+	int i;
+	int retval = -ENOMEM;
+	char junk[64];
+	int partial = 0;
+
+	/* See if the device offered us matches what we can accept */
+	if (cpu_to_le16(udev->descriptor.idVendor) != USB_MCEUSB_VENDOR_ID ||
+	    cpu_to_le16(udev->descriptor.idProduct) != USB_MCEUSB_PRODUCT_ID) {
+		dprintk("Wrong Vendor/Product IDs");
+#ifdef KERNEL_2_5
+		return -ENODEV;
+#else
+		return NULL;
+#endif
+	}
+
+	/* select a "subminor" number (part of a minor number) */
+	mutex_lock(&minor_table_mutex);
+	for (minor = 0; minor < MAX_DEVICES; ++minor) {
+		if (minor_table[minor] == NULL)
+			break;
+	}
+	if (minor >= MAX_DEVICES) {
+		printk(KERN_INFO "Too many devices plugged in, "
+		       "can not handle this device.\n");
+		goto error;
+	}
+
+	/* allocate memory for our device state and initialize it */
+	dev = kzalloc(sizeof(struct mceusb_device), GFP_KERNEL);
+	if (dev == NULL) {
+		err("Out of memory");
+#ifdef KERNEL_2_5
+		retval = -ENOMEM;
+#endif
+		goto error;
+	}
+	minor_table[minor] = dev;
+
+	mutex_init(&dev->lock);
+	dev->udev = udev;
+	dev->interface = interface;
+	dev->minor = minor;
+
+	/*
+	 * set up the endpoint information, check out the endpoints.
+	 * use only the first bulk-in and bulk-out endpoints
+	 */
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 5)
+	iface_desc = &interface->altsetting[0];
+#else
+	iface_desc = interface->cur_altsetting;
+#endif
+
+#ifdef KERNEL_2_5
+	for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
+		endpoint = &iface_desc->endpoint[i].desc;
+#else
+	for (i = 0; i < iface_desc->bNumEndpoints; ++i) {
+		endpoint = &iface_desc->endpoint[i];
+#endif
+		if ((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK) &&
+		    ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) ==
+		     USB_ENDPOINT_XFER_BULK)) {
+			dprintk("we found a bulk in endpoint");
+			buffer_size = endpoint->wMaxPacketSize;
+			dev->bulk_in_size = buffer_size;
+			dev->bulk_in_endpointAddr = endpoint->bEndpointAddress;
+#ifdef KERNEL_2_5
+			dev->bulk_in_buffer =
+				usb_buffer_alloc(udev, buffer_size,
+						 GFP_ATOMIC, &dev->dma_in);
+#else
+			dev->bulk_in_buffer = kmalloc(buffer_size, GFP_KERNEL);
+#endif
+			if (!dev->bulk_in_buffer) {
+				err("Couldn't allocate bulk_in_buffer");
+				goto error;
+			}
+		}
+
+		if (((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
+		    == 0x00)
+		    && ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) ==
+		    USB_ENDPOINT_XFER_BULK)) {
+			dprintk("we found a bulk out endpoint");
+#ifdef KERNEL_2_5
+			dev->write_urb = usb_alloc_urb(0, GFP_KERNEL);
+#else
+			dev->write_urb = usb_alloc_urb(0);
+#endif
+			if (!dev->write_urb) {
+				err("No free urbs available");
+				goto error;
+			}
+			buffer_size = endpoint->wMaxPacketSize;
+			dev->bulk_out_size = buffer_size;
+			dev->bulk_out_endpointAddr = endpoint->bEndpointAddress;
+#ifdef KERNEL_2_5
+			dev->bulk_out_buffer =
+				usb_buffer_alloc(udev, buffer_size,
+						 GFP_ATOMIC, &dev->dma_out);
+#else
+			dev->bulk_out_buffer = kmalloc(buffer_size, GFP_KERNEL);
+#endif
+			if (!dev->bulk_out_buffer) {
+				err("Couldn't allocate bulk_out_buffer");
+				goto error;
+			}
+#ifdef KERNEL_2_5
+			usb_fill_bulk_urb(dev->write_urb, udev,
+				      usb_sndbulkpipe
+				      (udev, endpoint->bEndpointAddress),
+				      dev->bulk_out_buffer, buffer_size,
+				      mceusb_write_bulk_callback, dev);
+			dev->write_urb->transfer_dma = dev->dma_out;
+			dev->write_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
+#else
+			FILL_BULK_URB(dev->write_urb, udev,
+				      usb_sndbulkpipe(udev,
+						endpoint->bEndpointAddress),
+				      dev->bulk_out_buffer, buffer_size,
+				      mceusb_write_bulk_callback, dev);
+#endif
+		}
+	}
+
+	if (!(dev->bulk_in_endpointAddr && dev->bulk_out_endpointAddr)) {
+		err("Couldn't find both bulk-in and bulk-out endpoints");
+		goto error;
+	}
+
+	/* init the waitq */
+	init_waitqueue_head(&dev->wait_q);
+
+
+	/* Set up our lirc driver */
+	driver = kzalloc(sizeof(struct lirc_driver), GFP_KERNEL);
+	if (!driver) {
+		err("out of memory");
+		goto error;
+	}
+
+	strcpy(driver->name, DRIVER_NAME " ");
+	driver->minor = minor;
+	driver->code_length = sizeof(lirc_t) * 8;
+	driver->features = LIRC_CAN_REC_MODE2; /* | LIRC_CAN_SEND_MODE2; */
+	driver->data = dev;
+	driver->buffer_size = 128;
+	driver->set_use_inc = &set_use_inc;
+	driver->set_use_dec = &set_use_dec;
+	driver->sample_rate = 80;   /* sample at 100hz (10ms) */
+	driver->add_to_buf = &mceusb_add_to_buf;
+#ifdef LIRC_HAVE_SYSFS
+	driver->dev = &interface->dev;
+#endif
+	driver->owner = THIS_MODULE;
+	if (lirc_register_driver(driver) < 0) {
+		kfree(driver);
+		goto error;
+	}
+	dev->driver = driver;
+
+	/*
+	 * clear off the first few messages. these look like
+	 * calibration or test data, i can't really tell
+	 * this also flushes in case we have random ir data queued up
+	 */
+	for (i = 0; i < 40; i++)
+		(void) usb_bulk_msg(udev,
+				    usb_rcvbulkpipe(udev,
+						    dev->bulk_in_endpointAddr),
+				    junk, 64, &partial, HZ*10);
+
+	msir_cleanup(dev);
+	mceusb_setup(udev);
+
+#ifdef KERNEL_2_5
+	/* we can register the device now, as it is ready */
+	usb_set_intfdata(interface, dev);
+#endif
+	mutex_unlock(&minor_table_mutex);
+#ifdef KERNEL_2_5
+	return 0;
+#else
+	return dev;
+#endif
+error:
+	if (likely(dev))
+		mceusb_delete(dev);
+
+	dev = NULL;
+	dprintk("%s: retval = %x", __func__, retval);
+	mutex_unlock(&minor_table_mutex);
+#ifdef KERNEL_2_5
+	return retval;
+#else
+	return NULL;
+#endif
+}
+
+/**
+ * mceusb_disconnect
+ *
+ * Called by the usb core when the device is removed from the system.
+ *
+ */
+#ifdef KERNEL_2_5
+static void mceusb_disconnect(struct usb_interface *interface)
+#else
+static void mceusb_disconnect(struct usb_device *udev, void *ptr)
+#endif
+{
+	struct mceusb_device *dev;
+	int minor;
+#ifdef KERNEL_2_5
+	dev = usb_get_intfdata(interface);
+	usb_set_intfdata(interface, NULL);
+#else
+	dev = (struct mceusb_device *)ptr;
+#endif
+
+	mutex_lock(&minor_table_mutex);
+	mutex_lock(&dev->lock);
+	minor = dev->minor;
+
+	/* unhook lirc things */
+	lirc_unregister_driver(minor);
+	lirc_buffer_free(dev->driver->rbuf);
+	kfree(dev->driver->rbuf);
+	kfree(dev->driver);
+
+	mutex_unlock(&dev->lock);
+	mceusb_delete(dev);
+
+	printk(KERN_INFO "Microsoft IR Transceiver #%d now disconnected\n",
+	       minor);
+	mutex_unlock(&minor_table_mutex);
+}
+
+
+
+static int __init usb_mceusb_init(void)
+{
+	int result;
+
+	/* register this driver with the USB subsystem */
+	result = usb_register(&mceusb_driver);
+#ifdef KERNEL_2_5
+	if (result) {
+#else
+	if (result < 0) {
+#endif
+		err("usb_register failed for the " DRIVER_NAME
+		    " driver. error number %d", result);
+#ifdef KERNEL_2_5
+		return result;
+#else
+		return -1;
+#endif
+	}
+
+	printk(KERN_INFO DRIVER_DESC " " DRIVER_VERSION "\n");
+	return 0;
+}
+
+
+static void __exit usb_mceusb_exit(void)
+{
+	usb_deregister(&mceusb_driver);
+}
+
+module_init(usb_mceusb_init);
+module_exit(usb_mceusb_exit);
+
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_AUTHOR(DRIVER_AUTHOR);
+MODULE_LICENSE("GPL");
+MODULE_DEVICE_TABLE(usb, mceusb_table);
+
+module_param(debug, int, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(debug, "Debug enabled or not");
+
+EXPORT_NO_SYMBOLS;

kernel/drivers/char/lirc/lirc_ttusbir.c

@@ -0,0 +1,410 @@
+/*
+ * lirc_ttusbir.c
+ *
+ * lirc_ttusbir - LIRC device driver for the TechnoTrend USB IR Receiver
+ *
+ * Copyright (C) 2007 Stefan Macher <st_maker-lirc@yahoo.de>
+ *
+ * This LIRC driver provides access to the TechnoTrend USB IR Receiver.
+ * The receiver delivers the IR signal as raw sampled true/false data in
+ * isochronous USB packets each of size 128 byte.
+ * Currently the driver reduces the sampling rate by factor of 8 as this
+ * is still more than enough to decode RC-5 - others should be analyzed.
+ * But the driver does not rely on RC-5 it should be able to decode every
+ * IR signal that is not too fast.
+ */
+
+/*
+ *  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
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include <linux/version.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/errno.h>
+#include <linux/slab.h>
+#include <linux/usb.h>
+
+#include <linux/lirc.h>
+#include "kcompat.h"
+#include "lirc_dev.h"
+
+MODULE_DESCRIPTION("TechnoTrend USB IR device driver for LIRC");
+MODULE_AUTHOR("Stefan Macher (st_maker-lirc@yahoo.de)");
+MODULE_LICENSE("GPL");
+
+/* #define DEBUG */
+#ifdef DEBUG
+#define DPRINTK printk
+#else
+#define DPRINTK(_x_, a...)
+#endif
+
+/* function declarations */
+static int probe(struct usb_interface *intf, const struct usb_device_id *id);
+static void disconnect(struct usb_interface *intf);
+#if defined(KERNEL_2_5) && LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 19)
+static void urb_complete(struct urb *urb, struct pt_regs *pt_regs);
+#else
+static void urb_complete(struct urb *urb);
+#endif
+static int set_use_inc(void *data);
+static void set_use_dec(void *data);
+
+static int num_urbs = 2;
+module_param(num_urbs, int, S_IRUGO);
+MODULE_PARM_DESC(num_urbs,
+		 "Number of URBs in queue. Try to increase to 4 in case "
+		 "of problems (default: 2; minimum: 2)");
+
+/* table of devices that work with this driver */
+static struct usb_device_id device_id_table[] = {
+	/* TechnoTrend USB IR Receiver */
+	{ USB_DEVICE(0x0B48, 0x2003) },
+	/* Terminating entry */
+	{ }
+};
+MODULE_DEVICE_TABLE(usb, device_id_table);
+
+/* USB driver definition */
+static struct usb_driver usb_driver = {
+	.name = "TTUSBIR",
+	.id_table = &(device_id_table[0]),
+	.probe = probe,
+	.disconnect = disconnect,
+};
+
+/* USB device definition */
+struct ttusbir_device {
+	struct usb_driver *usb_driver;
+	struct usb_device *udev;
+	struct usb_interface *interf;
+	struct usb_class_driver class_driver;
+	unsigned int ifnum; /* Interface number to use */
+	unsigned int alt_setting; /* alternate setting to use */
+	unsigned int endpoint; /* Endpoint to use */
+	struct urb **urb; /* num_urb URB pointers*/
+	char **buffer; /* 128 byte buffer for each URB */
+	struct lirc_buffer rbuf; /* Buffer towards LIRC */
+	struct lirc_driver driver;
+	int minor;
+	int last_pulse; /* remembers if last received byte was pulse or space */
+	int last_num; /* remembers how many last bytes appeared */
+	int opened;
+};
+
+/*** LIRC specific functions ***/
+static int set_use_inc(void *data)
+{
+	int i, retval;
+	struct ttusbir_device *ttusbir = data;
+
+	DPRINTK("Sending first URBs\n");
+	/* @TODO Do I need to check if I am already opened */
+	ttusbir->opened = 1;
+
+	for (i = 0; i < num_urbs; i++) {
+		retval = usb_submit_urb(ttusbir->urb[i], GFP_KERNEL);
+		if (retval) {
+			err("%s: usb_submit_urb failed on urb %d",
+			    __func__, i);
+			return retval;
+		}
+	}
+	return 0;
+}
+
+static void set_use_dec(void *data)
+{
+	struct ttusbir_device *ttusbir = data;
+
+	DPRINTK("Device closed\n");
+
+	ttusbir->opened = 0;
+}
+
+/*** USB specific functions ***/
+
+/*
+ * This mapping table is used to do a very simple filtering of the
+ * input signal.
+ * For a value with at least 4 bits set it returns 0xFF otherwise
+ * 0x00.  For faster IR signals this can not be used. But for RC-5 we
+ * still have about 14 samples per pulse/space, i.e. we sample with 14
+ * times higher frequency than the signal frequency
+ */
+const unsigned char map_table[] =
+{
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF,
+	0x00, 0x00, 0x00, 0xFF, 0x00, 0xFF, 0xFF, 0xFF,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF,
+	0x00, 0x00, 0x00, 0xFF, 0x00, 0xFF, 0xFF, 0xFF,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF,
+	0x00, 0x00, 0x00, 0xFF, 0x00, 0xFF, 0xFF, 0xFF,
+	0x00, 0x00, 0x00, 0xFF, 0x00, 0xFF, 0xFF, 0xFF,
+	0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF,
+	0x00, 0x00, 0x00, 0xFF, 0x00, 0xFF, 0xFF, 0xFF,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF,
+	0x00, 0x00, 0x00, 0xFF, 0x00, 0xFF, 0xFF, 0xFF,
+	0x00, 0x00, 0x00, 0xFF, 0x00, 0xFF, 0xFF, 0xFF,
+	0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF,
+	0x00, 0x00, 0x00, 0xFF, 0x00, 0xFF, 0xFF, 0xFF,
+	0x00, 0x00, 0x00, 0xFF, 0x00, 0xFF, 0xFF, 0xFF,
+	0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+	0x00, 0x00, 0x00, 0xFF, 0x00, 0xFF, 0xFF, 0xFF,
+	0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+	0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+	0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF
+};
+
+#if defined(KERNEL_2_5) && LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 19)
+static void urb_complete(struct urb *urb, struct pt_regs *pt_regs)
+#else
+static void urb_complete(struct urb *urb)
+#endif
+{
+	struct ttusbir_device *ttusbir;
+	unsigned char *buf;
+	int i;
+	lirc_t l;
+
+	ttusbir = urb->context;
+
+	if (!ttusbir->opened)
+		return;
+
+	buf = (unsigned char *)urb->transfer_buffer;
+
+	for (i = 0; i < 128; i++) {
+		/* Here we do the filtering and some kind of down sampling */
+		buf[i] = ~map_table[buf[i]];
+		if (ttusbir->last_pulse == buf[i]) {
+			if (ttusbir->last_num < PULSE_MASK/63)
+				ttusbir->last_num++;
+		/*
+		 * else we are in a idle period and do not need to
+		 * increment any longer
+		 */
+		} else {
+			l = ttusbir->last_num * 62; /* about 62 = us/byte */
+			if (ttusbir->last_pulse) /* pulse or space? */
+				l |= PULSE_BIT;
+			if (!lirc_buffer_full(&ttusbir->rbuf)) {
+				lirc_buffer_write(&ttusbir->rbuf, (void *)&l);
+				wake_up_interruptible(&ttusbir->rbuf.wait_poll);
+			}
+			ttusbir->last_num = 0;
+			ttusbir->last_pulse = buf[i];
+		}
+	}
+	usb_submit_urb(urb, GFP_ATOMIC); /* keep data rolling :-) */
+}
+
+/*
+ * Called whenever the USB subsystem thinks we could be the right driver
+ * to handle this device
+ */
+static int probe(struct usb_interface *intf, const struct usb_device_id *id)
+{
+	int alt_set, endp;
+	int found = 0;
+	int i, j;
+	int struct_size;
+	struct usb_host_interface *host_interf;
+	struct usb_interface_descriptor *interf_desc;
+	struct usb_host_endpoint *host_endpoint;
+	struct ttusbir_device *ttusbir;
+
+	DPRINTK("Module ttusbir probe\n");
+
+	/* To reduce memory fragmentation we use only one allocation */
+	struct_size =  sizeof(struct ttusbir_device) +
+		(sizeof(struct urb *) * num_urbs) +
+		(sizeof(char *) * num_urbs) +
+		(num_urbs * 128);
+	ttusbir = kzalloc(struct_size, GFP_KERNEL);
+	if (!ttusbir)
+		return -ENOMEM;
+
+	ttusbir->urb = (struct urb **)((char *)ttusbir +
+				      sizeof(struct ttusbir_device));
+	ttusbir->buffer = (char **)((char *)ttusbir->urb +
+				   (sizeof(struct urb *) * num_urbs));
+	for (i = 0; i < num_urbs; i++)
+		ttusbir->buffer[i] = (char *)ttusbir->buffer +
+			(sizeof(char *)*num_urbs) + (i * 128);
+
+	ttusbir->usb_driver = &usb_driver;
+	ttusbir->alt_setting = -1;
+	/* @TODO check if error can be returned */
+	ttusbir->udev = usb_get_dev(interface_to_usbdev(intf));
+	ttusbir->interf = intf;
+	ttusbir->last_pulse = 0x00;
+	ttusbir->last_num = 0;
+
+	/*
+	 * Now look for interface setting we can handle
+	 * We are searching for the alt setting where end point
+	 * 0x82 has max packet size 16
+	 */
+	for (alt_set = 0; alt_set < intf->num_altsetting && !found; alt_set++) {
+		host_interf = &intf->altsetting[alt_set];
+		interf_desc = &host_interf->desc;
+		for (endp = 0; endp < interf_desc->bNumEndpoints; endp++) {
+			host_endpoint = &host_interf->endpoint[endp];
+			if ((host_endpoint->desc.bEndpointAddress == 0x82) &&
+			    (host_endpoint->desc.wMaxPacketSize == 0x10)) {
+				ttusbir->alt_setting = alt_set;
+				ttusbir->endpoint = endp;
+				found = 1;
+				break;
+			}
+		}
+	}
+	if (ttusbir->alt_setting != -1)
+		DPRINTK("alt setting: %d\n", ttusbir->alt_setting);
+	else {
+		err("Could not find alternate setting\n");
+		kfree(ttusbir);
+		return -EINVAL;
+	}
+
+	/* OK lets setup this interface setting */
+	usb_set_interface(ttusbir->udev, 0, ttusbir->alt_setting);
+
+	/* Store device info in interface structure */
+	usb_set_intfdata(intf, ttusbir);
+
+	/* Register as a LIRC driver */
+	if (lirc_buffer_init(&ttusbir->rbuf, sizeof(lirc_t), 256) < 0) {
+		err("Could not get memory for LIRC data buffer\n");
+		usb_set_intfdata(intf, NULL);
+		kfree(ttusbir);
+		return -ENOMEM;
+	}
+	strcpy(ttusbir->driver.name, "TTUSBIR");
+	ttusbir->driver.minor = -1;
+	ttusbir->driver.code_length = 1;
+	ttusbir->driver.sample_rate = 0;
+	ttusbir->driver.data = ttusbir;
+	ttusbir->driver.add_to_buf = NULL;
+#ifndef LIRC_REMOVE_DURING_EXPORT
+	ttusbir->driver.get_queue = NULL;
+#endif
+	ttusbir->driver.rbuf = &ttusbir->rbuf;
+	ttusbir->driver.set_use_inc = set_use_inc;
+	ttusbir->driver.set_use_dec = set_use_dec;
+	ttusbir->driver.fops = NULL;
+	ttusbir->driver.dev = &intf->dev;
+	ttusbir->driver.owner = THIS_MODULE;
+	ttusbir->driver.features = LIRC_CAN_REC_MODE2;
+	ttusbir->minor = lirc_register_driver(&ttusbir->driver);
+	if (ttusbir->minor < 0) {
+		err("Error registering as LIRC driver\n");
+		usb_set_intfdata(intf, NULL);
+		lirc_buffer_free(&ttusbir->rbuf);
+		kfree(ttusbir);
+		return -EIO;
+	}
+
+	/* Allocate and setup the URB that we will use to talk to the device */
+	for (i = 0; i < num_urbs; i++) {
+		ttusbir->urb[i] = usb_alloc_urb(8, GFP_KERNEL);
+		if (!ttusbir->urb[i]) {
+			err("Could not allocate memory for the URB\n");
+			for (j = i - 1; j >= 0; j--)
+				kfree(ttusbir->urb[j]);
+			lirc_buffer_free(&ttusbir->rbuf);
+			lirc_unregister_driver(ttusbir->minor);
+			kfree(ttusbir);
+			usb_set_intfdata(intf, NULL);
+			return -ENOMEM;
+		}
+		ttusbir->urb[i]->dev = ttusbir->udev;
+		ttusbir->urb[i]->context = ttusbir;
+		ttusbir->urb[i]->pipe = usb_rcvisocpipe(ttusbir->udev,
+							ttusbir->endpoint);
+		ttusbir->urb[i]->interval = 1;
+		ttusbir->urb[i]->transfer_flags = URB_ISO_ASAP;
+		ttusbir->urb[i]->transfer_buffer = &ttusbir->buffer[i][0];
+		ttusbir->urb[i]->complete = urb_complete;
+		ttusbir->urb[i]->number_of_packets = 8;
+		ttusbir->urb[i]->transfer_buffer_length = 128;
+		for (j = 0; j < 8; j++) {
+			ttusbir->urb[i]->iso_frame_desc[j].offset = j*16;
+			ttusbir->urb[i]->iso_frame_desc[j].length = 16;
+		}
+	}
+	return 0;
+}
+
+/**
+ * Called when the driver is unloaded or the device is unplugged
+ */
+static void disconnect(struct usb_interface *intf)
+{
+	int i;
+	struct ttusbir_device *ttusbir;
+
+	DPRINTK("Module ttusbir disconnect\n");
+
+	ttusbir = (struct ttusbir_device *) usb_get_intfdata(intf);
+	usb_set_intfdata(intf, NULL);
+	lirc_unregister_driver(ttusbir->minor);
+	DPRINTK("unregistered\n");
+
+	for (i = 0; i < num_urbs; i++) {
+		usb_kill_urb(ttusbir->urb[i]);
+		usb_free_urb(ttusbir->urb[i]);
+	}
+	DPRINTK("URBs killed\n");
+	lirc_buffer_free(&ttusbir->rbuf);
+	kfree(ttusbir);
+}
+
+static int ttusbir_init_module(void)
+{
+	int result;
+
+	DPRINTK(KERN_DEBUG "Module ttusbir init\n");
+
+	/* register this driver with the USB subsystem */
+	result = usb_register(&usb_driver);
+	if (result)
+		err("usb_register failed. Error number %d", result);
+	return result;
+}
+
+static void ttusbir_exit_module(void)
+{
+	printk(KERN_DEBUG "Module ttusbir exit\n");
+	usb_deregister(&usb_driver);
+}
+
+module_init(ttusbir_init_module);
+module_exit(ttusbir_exit_module);