/*      $Id: kcompat.h,v 5.36 2008/05/14 16:37:49 lirc Exp $      */

#ifndef _KCOMPAT_H
#define _KCOMPAT_H

#include <linux/version.h>

#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, 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, 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, fmt, args...) \
	class_device_create(cs, NULL, dev, parent, fmt, ## args)

#else /* >= 2.6.26 */

#define lirc_device_create device_create

#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_class_destroy(x, y) do { } while (0)
#define lirc_class_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

#endif /* _KCOMPAT_H */
