#ifndef __HID_H #define __HID_H /* * Copyright (c) 1999 Andreas Gal * Copyright (c) 2000-2001 Vojtech Pavlik * Copyright (c) 2006-2007 Jiri Kosina */ /* * 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 * * Should you need to contact me, the author, you can do so either by * e-mail - mail your message to , or by paper mail: * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic */ /* * USB HID (Human Interface Device) interface class code */ #define USB_INTERFACE_CLASS_HID 3 /* * USB HID interface subclass and protocol codes */ #define USB_INTERFACE_SUBCLASS_BOOT 1 #define USB_INTERFACE_PROTOCOL_KEYBOARD 1 #define USB_INTERFACE_PROTOCOL_MOUSE 2 /* * HID class requests */ #define HID_REQ_GET_REPORT 0x01 #define HID_REQ_GET_IDLE 0x02 #define HID_REQ_GET_PROTOCOL 0x03 #define HID_REQ_SET_REPORT 0x09 #define HID_REQ_SET_IDLE 0x0A #define HID_REQ_SET_PROTOCOL 0x0B /* * HID class descriptor types */ #define HID_DT_HID (USB_TYPE_CLASS | 0x01) #define HID_DT_REPORT (USB_TYPE_CLASS | 0x02) #define HID_DT_PHYSICAL (USB_TYPE_CLASS | 0x03) #define HID_MAX_DESCRIPTOR_SIZE 4096 #ifdef __KERNEL__ #include #include #include #include /* hid_device_id */ #include #include #include /* * We parse each description item into this structure. Short items data * values are expanded to 32-bit signed int, long items contain a pointer * into the data area. */ struct hid_item { unsigned format; __u8 size; __u8 type; __u8 tag; union { __u8 u8; __s8 s8; __u16 u16; __s16 s16; __u32 u32; __s32 s32; __u8 *longdata; } data; }; /* * HID report item format */ #define HID_ITEM_FORMAT_SHORT 0 #define HID_ITEM_FORMAT_LONG 1 /* * Special tag indicating long items */ #define HID_ITEM_TAG_LONG 15 /* * HID report descriptor item type (prefix bit 2,3) */ #define HID_ITEM_TYPE_MAIN 0 #define HID_ITEM_TYPE_GLOBAL 1 #define HID_ITEM_TYPE_LOCAL 2 #define HID_ITEM_TYPE_RESERVED 3 /* * HID report descriptor main item tags */ #define HID_MAIN_ITEM_TAG_INPUT 8 #define HID_MAIN_ITEM_TAG_OUTPUT 9 #define HID_MAIN_ITEM_TAG_FEATURE 11 #define HID_MAIN_ITEM_TAG_BEGIN_COLLECTION 10 #define HID_MAIN_ITEM_TAG_END_COLLECTION 12 /* * HID report descriptor main item contents */ #define HID_MAIN_ITEM_CONSTANT 0x001 #define HID_MAIN_ITEM_VARIABLE 0x002 #define HID_MAIN_ITEM_RELATIVE 0x004 #define HID_MAIN_ITEM_WRAP 0x008 #define HID_MAIN_ITEM_NONLINEAR 0x010 #define HID_MAIN_ITEM_NO_PREFERRED 0x020 #define HID_MAIN_ITEM_NULL_STATE 0x040 #define HID_MAIN_ITEM_VOLATILE 0x080 #define HID_MAIN_ITEM_BUFFERED_BYTE 0x100 /* * HID report descriptor collection item types */ #define HID_COLLECTION_PHYSICAL 0 #define HID_COLLECTION_APPLICATION 1 #define HID_COLLECTION_LOGICAL 2 /* * HID report descriptor global item tags */ #define HID_GLOBAL_ITEM_TAG_USAGE_PAGE 0 #define HID_GLOBAL_ITEM_TAG_LOGICAL_MINIMUM 1 #define HID_GLOBAL_ITEM_TAG_LOGICAL_MAXIMUM 2 #define HID_GLOBAL_ITEM_TAG_PHYSICAL_MINIMUM 3 #define HID_GLOBAL_ITEM_TAG_PHYSICAL_MAXIMUM 4 #define HID_GLOBAL_ITEM_TAG_UNIT_EXPONENT 5 #define HID_GLOBAL_ITEM_TAG_UNIT 6 #define HID_GLOBAL_ITEM_TAG_REPORT_SIZE 7 #define HID_GLOBAL_ITEM_TAG_REPORT_ID 8 #define HID_GLOBAL_ITEM_TAG_REPORT_COUNT 9 #define HID_GLOBAL_ITEM_TAG_PUSH 10 #define HID_GLOBAL_ITEM_TAG_POP 11 /* * HID report descriptor local item tags */ #define HID_LOCAL_ITEM_TAG_USAGE 0 #define HID_LOCAL_ITEM_TAG_USAGE_MINIMUM 1 #define HID_LOCAL_ITEM_TAG_USAGE_MAXIMUM 2 #define HID_LOCAL_ITEM_TAG_DESIGNATOR_INDEX 3 #define HID_LOCAL_ITEM_TAG_DESIGNATOR_MINIMUM 4 #define HID_LOCAL_ITEM_TAG_DESIGNATOR_MAXIMUM 5 #define HID_LOCAL_ITEM_TAG_STRING_INDEX 7 #define HID_LOCAL_ITEM_TAG_STRING_MINIMUM 8 #define HID_LOCAL_ITEM_TAG_STRING_MAXIMUM 9 #define HID_LOCAL_ITEM_TAG_DELIMITER 10 /* * HID usage tables */ #define HID_USAGE_PAGE 0xffff0000 #define HID_UP_UNDEFINED 0x00000000 #define HID_UP_GENDESK 0x00010000 #define HID_UP_SIMULATION 0x00020000 #define HID_UP_KEYBOARD 0x00070000 #define HID_UP_LED 0x00080000 #define HID_UP_BUTTON 0x00090000 #define HID_UP_ORDINAL 0x000a0000 #define HID_UP_CONSUMER 0x000c0000 #define HID_UP_DIGITIZER 0x000d0000 #define HID_UP_PID 0x000f0000 #define HID_UP_HPVENDOR 0xff7f0000 #define HID_UP_MSVENDOR 0xff000000 #define HID_UP_CUSTOM 0x00ff0000 #define HID_UP_LOGIVENDOR 0xffbc0000 #define HID_USAGE 0x0000ffff #define HID_GD_POINTER 0x00010001 #define HID_GD_MOUSE 0x00010002 #define HID_GD_JOYSTICK 0x00010004 #define HID_GD_GAMEPAD 0x00010005 #define HID_GD_KEYBOARD 0x00010006 #define HID_GD_KEYPAD 0x00010007 #define HID_GD_MULTIAXIS 0x00010008 #define HID_GD_X 0x00010030 #define HID_GD_Y 0x00010031 #define HID_GD_Z 0x00010032 #define HID_GD_RX 0x00010033 #define HID_GD_RY 0x00010034 #define HID_GD_RZ 0x00010035 #define HID_GD_SLIDER 0x00010036 #define HID_GD_DIAL 0x00010037 #define HID_GD_WHEEL 0x00010038 #define HID_GD_HATSWITCH 0x00010039 #define HID_GD_BUFFER 0x0001003a #define HID_GD_BYTECOUNT 0x0001003b #define HID_GD_MOTION 0x0001003c #define HID_GD_START 0x0001003d #define HID_GD_SELECT 0x0001003e #define HID_GD_VX 0x00010040 #define HID_GD_VY 0x00010041 #define HID_GD_VZ 0x00010042 #define HID_GD_VBRX 0x00010043 #define HID_GD_VBRY 0x00010044 #define HID_GD_VBRZ 0x00010045 #define HID_GD_VNO 0x00010046 #define HID_GD_FEATURE 0x00010047 #define HID_GD_UP 0x00010090 #define HID_GD_DOWN 0x00010091 #define HID_GD_RIGHT 0x00010092 #define HID_GD_LEFT 0x00010093 /* * HID report types --- Ouch! HID spec says 1 2 3! */ #define HID_INPUT_REPORT 0 #define HID_OUTPUT_REPORT 1 #define HID_FEATURE_REPORT 2 /* * HID connect requests */ #define HID_CONNECT_HIDINPUT 0x01 #define HID_CONNECT_HIDINPUT_FORCE 0x02 #define HID_CONNECT_HIDRAW 0x04 #define HID_CONNECT_HIDDEV 0x08 #define HID_CONNECT_HIDDEV_FORCE 0x10 #define HID_CONNECT_FF 0x20 #define HID_CONNECT_DEFAULT (HID_CONNECT_HIDINPUT|HID_CONNECT_HIDRAW| \ HID_CONNECT_HIDDEV|HID_CONNECT_FF) /* * HID device quirks. */ /* * Increase this if you need to configure more HID quirks at module load time */ #define MAX_USBHID_BOOT_QUIRKS 4 #define HID_QUIRK_INVERT 0x00000001 #define HID_QUIRK_NOTOUCH 0x00000002 #define HID_QUIRK_IGNORE 0x00000004 #define HID_QUIRK_NOGET 0x00000008 #define HID_QUIRK_BADPAD 0x00000020 #define HID_QUIRK_MULTI_INPUT 0x00000040 #define HID_QUIRK_SKIP_OUTPUT_REPORTS 0x00010000 #define HID_QUIRK_FULLSPEED_INTERVAL 0x10000000 /* * This is the global environment of the parser. This information is * persistent for main-items. The global environment can be saved and * restored with PUSH/POP statements. */ struct hid_global { unsigned usage_page; __s32 logical_minimum; __s32 logical_maximum; __s32 physical_minimum; __s32 physical_maximum; __s32 unit_exponent; unsigned unit; unsigned report_id; unsigned report_size; unsigned report_count; }; /* * This is the local environment. It is persistent up the next main-item. */ #define HID_MAX_USAGES 12288 #define HID_DEFAULT_NUM_COLLECTIONS 16 struct hid_local { unsigned usage[HID_MAX_USAGES]; /* usage array */ unsigned collection_index[HID_MAX_USAGES]; /* collection index array */ unsigned usage_index; unsigned usage_minimum; unsigned delimiter_depth; unsigned delimiter_branch; }; /* * This is the collection stack. We climb up the stack to determine * application and function of each field. */ struct hid_collection { unsigned type; unsigned usage; unsigned level; }; struct hid_usage { unsigned hid; /* hid usage code */ unsigned collection_index; /* index into collection array */ /* hidinput data */ __u16 code; /* input driver code */ __u8 type; /* input driver type */ __s8 hat_min; /* hat switch fun */ __s8 hat_max; /* ditto */ __s8 hat_dir; /* ditto */ }; struct hid_input; struct hid_field { unsigned physical; /* physical usage for this field */ unsigned logical; /* logical usage for this field */ unsigned application; /* application usage for this field */ struct hid_usage *usage; /* usage table for this function */ unsigned maxusage; /* maximum usage index */ unsigned flags; /* main-item flags (i.e. volatile,array,constant) */ unsigned report_offset; /* bit offset in the report */ unsigned report_size; /* size of this field in the report */ unsigned report_count; /* number of this field in the report */ unsigned report_type; /* (input,output,feature) */ __s32 *value; /* last known value(s) */ __s32 logical_minimum; __s32 logical_maximum; __s32 physical_minimum; __s32 physical_maximum; __s32 unit_exponent; unsigned unit; struct hid_report *report; /* associated report */ unsigned index; /* index into report->field[] */ /* hidinput data */ struct hid_input *hidinput; /* associated input structure */ __u16 dpad; /* dpad input code */ }; #define HID_MAX_FIELDS 64 struct hid_report { struct list_head list; unsigned id; /* id of this report */ unsigned type; /* report type */ struct hid_field *field[HID_MAX_FIELDS]; /* fields of the report */ unsigned maxfield; /* maximum valid field index */ unsigned size; /* size of the report (bits) */ struct hid_device *device; /* associated device */ }; struct hid_report_enum { unsigned numbered; struct list_head report_list; struct hid_report *report_id_hash[256]; }; #define HID_REPORT_TYPES 3 #define HID_MIN_BUFFER_SIZE 64 /* make sure there is at least a packet size of space */ #define HID_MAX_BUFFER_SIZE 4096 /* 4kb */ #define HID_CONTROL_FIFO_SIZE 256 /* to init devices with >100 reports */ #define HID_OUTPUT_FIFO_SIZE 64 struct hid_control_fifo { unsigned char dir; struct hid_report *report; char *raw_report; }; struct hid_output_fifo { struct hid_report *report; char *raw_report; }; #define HID_CLAIMED_INPUT 1 #define HID_CLAIMED_HIDDEV 2 #define HID_CLAIMED_HIDRAW 4 #define HID_STAT_ADDED 1 #define HID_STAT_PARSED 2 struct hid_input { struct list_head list; struct hid_report *report; struct input_dev *input; }; enum hid_type { HID_TYPE_OTHER = 0, HID_TYPE_USBMOUSE }; struct hid_driver; struct hid_ll_driver; struct hid_device { /* device report descriptor */ __u8 *rdesc; unsigned rsize; struct hid_collection *collection; /* List of HID collections */ unsigned collection_size; /* Number of allocated hid_collections */ unsigned maxcollection; /* Number of parsed collections */ unsigned maxapplication; /* Number of applications */ __u16 bus; /* BUS ID */ __u32 vendor; /* Vendor ID */ __u32 product; /* Product ID */ __u32 version; /* HID version */ enum hid_type type; /* device type (mouse, kbd, ...) */ unsigned country; /* HID country */ struct hid_report_enum report_enum[HID_REPORT_TYPES]; struct device dev; /* device */ struct hid_driver *driver; struct hid_ll_driver *ll_driver; unsigned int status; /* see STAT flags above */ unsigned claimed; /* Claimed by hidinput, hiddev? */ unsigned quirks; /* Various quirks the device can pull on us */ struct list_head inputs; /* The list of inputs */ void *hiddev; /* The hiddev structure */ void *hidraw; int minor; /* Hiddev minor number */ int open; /* is the device open by anyone? */ char name[128]; /* Device name */ char phys[64]; /* Device physical location */ char uniq[64]; /* Device unique identifier (serial #) */ /* debugfs */ struct dentry *debug_dir; struct dentry *debug_rdesc; void *driver_data; /* temporary hid_ff handling (until moved to the drivers) */ int (*ff_init)(struct hid_device *); /* hiddev event handler */ int (*hiddev_connect)(struct hid_device *, unsigned int); void (*hiddev_hid_event) (struct hid_device *, struct hid_field *field, struct hid_usage *, __s32); void (*hiddev_report_event) (struct hid_device *, struct hid_report *); /* handler for raw output data, used by hidraw */ int (*hid_output_raw_report) (struct hid_device *, __u8 *, size_t); }; static inline void *hid_get_drvdata(struct hid_device *hdev) { return dev_get_drvdata(&hdev->dev); } static inline void hid_set_drvdata(struct hid_device *hdev, void *data) { dev_set_drvdata(&hdev->dev, data); } #define HID_GLOBAL_STACK_SIZE 4 #define HID_COLLECTION_STACK_SIZE 4 struct hid_parser { struct hid_global global; struct hid_global global_stack[HID_GLOBAL_STACK_SIZE]; unsigned global_stack_ptr; struct hid_local local; unsigned collection_stack[HID_COLLECTION_STACK_SIZE]; unsigned collection_stack_ptr; struct hid_device *device; }; struct hid_class_descriptor { __u8 bDescriptorType; __le16 wDescriptorLength; } __attribute__ ((packed)); struct hid_descriptor { __u8 bLength; __u8 bDescriptorType; __le16 bcdHID; __u8 bCountryCode; __u8 bNumDescriptors; struct hid_class_descriptor desc[1]; } __attribute__ ((packed)); #define HID_DEVICE(b, ven, prod) \ .bus = (b), \ .vendor = (ven), .product = (prod) #define HID_USB_DEVICE(ven, prod) HID_DEVICE(BUS_USB, ven, prod) #define HID_BLUETOOTH_DEVICE(ven, prod) HID_DEVICE(BUS_BLUETOOTH, ven, prod) #define HID_REPORT_ID(rep) \ .report_type = (rep) #define HID_USAGE_ID(uhid, utype, ucode) \ .usage_hid = (uhid), .usage_type = (utype), .usage_code = (ucode) /* we don't want to catch types and codes equal to 0 */ #define HID_TERMINATOR (HID_ANY_ID - 1) struct hid_report_id { __u32 report_type; }; struct hid_usage_id { __u32 usage_hid; __u32 usage_type; __u32 usage_code; }; /** * struct hid_driver * @name: driver name (e.g. "Footech_bar-wheel") * @id_table: which devices is this driver for (must be non-NULL for probe * to be called) * @dyn_list: list of dynamically added device ids * @dyn_lock: lock protecting @dyn_list * @probe: new device inserted * @remove: device removed (NULL if not a hot-plug capable driver) * @report_table: on which reports to call raw_event (NULL means all) * @raw_event: if report in report_table, this hook is called (NULL means nop) * @usage_table: on which events to call event (NULL means all) * @event: if usage in usage_table, this hook is called (NULL means nop) * @report_fixup: called before report descriptor parsing (NULL means nop) * @input_mapping: invoked on input registering before mapping an usage * @input_mapped: invoked on input registering after mapping an usage * * raw_event and event should return 0 on no action performed, 1 when no * further processing should be done and negative on error * * input_mapping shall return a negative value to completely ignore this usage * (e.g. doubled or invalid usage), zero to continue with parsing of this * usage by generic code (no special handling needed) or positive to skip * generic parsing (needed special handling which was done in the hook already) * input_mapped shall return negative to inform the layer that this usage * should not be considered for further processing or zero to notify that * no processing was performed and should be done in a generic manner * Both these functions may be NULL which means the same behavior as returning * zero from them. */ struct hid_driver { char *name; const struct hid_device_id *id_table; struct list_head dyn_list; spinlock_t dyn_lock; int (*probe)(struct hid_device *dev, const struct hid_device_id *id); void (*remove)(struct hid_device *dev); const struct hid_report_id *report_table; int (*raw_event)(struct hid_device *hdev, struct hid_report *report, u8 *data, int size); const struct hid_usage_id *usage_table; int (*event)(struct hid_device *hdev, struct hid_field *field, struct hid_usage *usage, __s32 value); void (*report_fixup)(struct hid_device *hdev, __u8 *buf, unsigned int size); int (*input_mapping)(struct hid_device *hdev, struct hid_input *hidinput, struct hid_field *field, struct hid_usage *usage, unsigned long **bit, int *max); int (*input_mapped)(struct hid_device *hdev, struct hid_input *hidinput, struct hid_field *field, struct hid_usage *usage, unsigned long **bit, int *max); /* private: */ struct device_driver driver; }; /** * hid_ll_driver - low level driver callbacks * @start: called on probe to start the device * @stop: called on remove * @open: called by input layer on open * @close: called by input layer on close * @hidinput_input_event: event input event (e.g. ff or leds) * @parse: this method is called only once to parse the device data, * shouldn't allocate anything to not leak memory */ struct hid_ll_driver { int (*start)(struct hid_device *hdev); void (*stop)(struct hid_device *hdev); int (*open)(struct hid_device *hdev); void (*close)(struct hid_device *hdev); int (*power)(struct hid_device *hdev, int level); int (*hidinput_input_event) (struct input_dev *idev, unsigned int type, unsigned int code, int value); int (*parse)(struct hid_device *hdev); }; #define PM_HINT_FULLON 1<<5 #define PM_HINT_NORMAL 1<<1 /* Applications from HID Usage Tables 4/8/99 Version 1.1 */ /* We ignore a few input applications that are not widely used */ #define IS_INPUT_APPLICATION(a) (((a >= 0x00010000) && (a <= 0x00010008)) || (a == 0x00010080) || (a == 0x000c0001) || (a == 0x000d0002)) /* HID core API */ #ifdef CONFIG_HID_DEBUG extern int hid_debug; #endif extern int hid_add_device(struct hid_device *); extern void hid_destroy_device(struct hid_device *); extern int __must_check __hid_register_driver(struct hid_driver *, struct module *, const char *mod_name); static inline int __must_check hid_register_driver(struct hid_driver *driver) { return __hid_register_driver(driver, THIS_MODULE, KBUILD_MODNAME); } extern void hid_unregister_driver(struct hid_driver *); extern void hidinput_hid_event(struct hid_device *, struct hid_field *, struct hid_usage *, __s32); extern void hidinput_report_event(struct hid_device *hid, struct hid_report *report); extern int hidinput_connect(struct hid_device *hid, unsigned int force); extern void hidinput_disconnect(struct hid_device *); int hid_set_field(struct hid_field *, unsigned, __s32); int hid_input_report(struct hid_device *, int type, u8 *, int, int); int hidinput_find_field(struct hid_device *hid, unsigned int type, unsigned int code, struct hid_field **field); void hid_output_report(struct hid_report *report, __u8 *data); struct hid_device *hid_allocate_device(void); int hid_parse_report(struct hid_device *hid, __u8 *start, unsigned size); int hid_check_keys_pressed(struct hid_device *hid); int hid_connect(struct hid_device *hid, unsigned int connect_mask); /** * hid_map_usage - map usage input bits * * @hidinput: hidinput which we are interested in * @usage: usage to fill in * @bit: pointer to input->{}bit (out parameter) * @max: maximal valid usage->code to consider later (out parameter) * @type: input event type (EV_KEY, EV_REL, ...) * @c: code which corresponds to this usage and type */ static inline void hid_map_usage(struct hid_input *hidinput, struct hid_usage *usage, unsigned long **bit, int *max, __u8 type, __u16 c) { struct input_dev *input = hidinput->input; usage->type = type; usage->code = c; switch (type) { case EV_ABS: *bit = input->absbit; *max = ABS_MAX; break; case EV_REL: *bit = input->relbit; *max = REL_MAX; break; case EV_KEY: *bit = input->keybit; *max = KEY_MAX; break; case EV_LED: *bit = input->ledbit; *max = LED_MAX; break; } } /** * hid_map_usage_clear - map usage input bits and clear the input bit * * The same as hid_map_usage, except the @c bit is also cleared in supported * bits (@bit). */ static inline void hid_map_usage_clear(struct hid_input *hidinput, struct hid_usage *usage, unsigned long **bit, int *max, __u8 type, __u16 c) { hid_map_usage(hidinput, usage, bit, max, type, c); clear_bit(c, *bit); } /** * hid_parse - parse HW reports * * @hdev: hid device * * Call this from probe after you set up the device (if needed). Your * report_fixup will be called (if non-NULL) after reading raw report from * device before passing it to hid layer for real parsing. */ static inline int __must_check hid_parse(struct hid_device *hdev) { int ret; if (hdev->status & HID_STAT_PARSED) return 0; ret = hdev->ll_driver->parse(hdev); if (!ret) hdev->status |= HID_STAT_PARSED; return ret; } /** * hid_hw_start - start underlaying HW * * @hdev: hid device * @connect_mask: which outputs to connect, see HID_CONNECT_* * * Call this in probe function *after* hid_parse. This will setup HW buffers * and start the device (if not deffered to device open). hid_hw_stop must be * called if this was successfull. */ static inline int __must_check hid_hw_start(struct hid_device *hdev, unsigned int connect_mask) { int ret = hdev->ll_driver->start(hdev); if (ret || !connect_mask) return ret; ret = hid_connect(hdev, connect_mask); if (ret) hdev->ll_driver->stop(hdev); return ret; } /** * hid_hw_stop - stop underlaying HW * * @hdev: hid device * * This is usually called from remove function or from probe when something * failed and hid_hw_start was called already. */ static inline void hid_hw_stop(struct hid_device *hdev) { hdev->ll_driver->stop(hdev); } void hid_report_raw_event(struct hid_device *hid, int type, u8 *data, int size, int interrupt); extern int hid_generic_init(void); extern void hid_generic_exit(void); /* HID quirks API */ u32 usbhid_lookup_quirk(const u16 idVendor, const u16 idProduct); int usbhid_quirks_init(char **quirks_param); void usbhid_quirks_exit(void); void usbhid_set_leds(struct hid_device *hid); #ifdef CONFIG_HID_PID int hid_pidff_init(struct hid_device *hid); #else #define hid_pidff_init NULL #endif #ifdef CONFIG_HID_DEBUG #define dbg_hid(format, arg...) if (hid_debug) \ printk(KERN_DEBUG "%s: " format ,\ __FILE__ , ## arg) #define dbg_hid_line(format, arg...) if (hid_debug) \ printk(format, ## arg) #else static inline int __attribute__((format(printf, 1, 2))) dbg_hid(const char *fmt, ...) { return 0; } #define dbg_hid_line dbg_hid #endif /* HID_DEBUG */ #define err_hid(format, arg...) printk(KERN_ERR "%s: " format "\n" , \ __FILE__ , ## arg) #endif /* HID_FF */ #endif