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Diffstat (limited to 'include/linux/hiddev.h')
| -rw-r--r-- | include/linux/hiddev.h | 240 |
1 files changed, 240 insertions, 0 deletions
diff --git a/include/linux/hiddev.h b/include/linux/hiddev.h new file mode 100644 index 00000000000..945ba1ad14a --- /dev/null +++ b/include/linux/hiddev.h @@ -0,0 +1,240 @@ +#ifndef _HIDDEV_H +#define _HIDDEV_H + +/* + * $Id: hiddev.h,v 1.2 2001/04/26 11:26:09 vojtech Exp $ + * + * Copyright (c) 1999-2000 Vojtech Pavlik + * + * Sponsored by SuSE + */ + +/* + * 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 <vojtech@suse.cz>, or by paper mail: + * Vojtech Pavlik, Ucitelska 1576, Prague 8, 182 00 Czech Republic + */ + +/* + * The event structure itself + */ + +struct hiddev_event { + unsigned hid; + signed int value; +}; + +struct hiddev_devinfo { + __u32 bustype; + __u32 busnum; + __u32 devnum; + __u32 ifnum; + __s16 vendor; + __s16 product; + __s16 version; + __u32 num_applications; +}; + +struct hiddev_collection_info { + __u32 index; + __u32 type; + __u32 usage; + __u32 level; +}; + +#define HID_STRING_SIZE 256 +struct hiddev_string_descriptor { + __s32 index; + char value[HID_STRING_SIZE]; +}; + +struct hiddev_report_info { + __u32 report_type; + __u32 report_id; + __u32 num_fields; +}; + +/* To do a GUSAGE/SUSAGE, fill in at least usage_code, report_type and + * report_id. Set report_id to REPORT_ID_UNKNOWN if the rest of the fields + * are unknown. Otherwise use a usage_ref struct filled in from a previous + * successful GUSAGE call to save time. To actually send a value to the + * device, perform a SUSAGE first, followed by a SREPORT. An INITREPORT or a + * GREPORT isn't necessary for a GUSAGE to return valid data. + */ +#define HID_REPORT_ID_UNKNOWN 0xffffffff +#define HID_REPORT_ID_FIRST 0x00000100 +#define HID_REPORT_ID_NEXT 0x00000200 +#define HID_REPORT_ID_MASK 0x000000ff +#define HID_REPORT_ID_MAX 0x000000ff + +#define HID_REPORT_TYPE_INPUT 1 +#define HID_REPORT_TYPE_OUTPUT 2 +#define HID_REPORT_TYPE_FEATURE 3 +#define HID_REPORT_TYPE_MIN 1 +#define HID_REPORT_TYPE_MAX 3 + +struct hiddev_field_info { + __u32 report_type; + __u32 report_id; + __u32 field_index; + __u32 maxusage; + __u32 flags; + __u32 physical; /* physical usage for this field */ + __u32 logical; /* logical usage for this field */ + __u32 application; /* application usage for this field */ + __s32 logical_minimum; + __s32 logical_maximum; + __s32 physical_minimum; + __s32 physical_maximum; + __u32 unit_exponent; + __u32 unit; +}; + +/* Fill in report_type, report_id and field_index to get the information on a + * field. + */ +#define HID_FIELD_CONSTANT 0x001 +#define HID_FIELD_VARIABLE 0x002 +#define HID_FIELD_RELATIVE 0x004 +#define HID_FIELD_WRAP 0x008 +#define HID_FIELD_NONLINEAR 0x010 +#define HID_FIELD_NO_PREFERRED 0x020 +#define HID_FIELD_NULL_STATE 0x040 +#define HID_FIELD_VOLATILE 0x080 +#define HID_FIELD_BUFFERED_BYTE 0x100 + +struct hiddev_usage_ref { + __u32 report_type; + __u32 report_id; + __u32 field_index; + __u32 usage_index; + __u32 usage_code; + __s32 value; +}; + +/* hiddev_usage_ref_multi is used for sending multiple bytes to a control. + * It really manifests itself as setting the value of consecutive usages */ +#define HID_MAX_MULTI_USAGES 1024 +struct hiddev_usage_ref_multi { + struct hiddev_usage_ref uref; + __u32 num_values; + __s32 values[HID_MAX_MULTI_USAGES]; +}; + +/* FIELD_INDEX_NONE is returned in read() data from the kernel when flags + * is set to (HIDDEV_FLAG_UREF | HIDDEV_FLAG_REPORT) and a new report has + * been sent by the device + */ +#define HID_FIELD_INDEX_NONE 0xffffffff + +/* + * Protocol version. + */ + +#define HID_VERSION 0x010004 + +/* + * IOCTLs (0x00 - 0x7f) + */ + +#define HIDIOCGVERSION _IOR('H', 0x01, int) +#define HIDIOCAPPLICATION _IO('H', 0x02) +#define HIDIOCGDEVINFO _IOR('H', 0x03, struct hiddev_devinfo) +#define HIDIOCGSTRING _IOR('H', 0x04, struct hiddev_string_descriptor) +#define HIDIOCINITREPORT _IO('H', 0x05) +#define HIDIOCGNAME(len) _IOC(_IOC_READ, 'H', 0x06, len) +#define HIDIOCGREPORT _IOW('H', 0x07, struct hiddev_report_info) +#define HIDIOCSREPORT _IOW('H', 0x08, struct hiddev_report_info) +#define HIDIOCGREPORTINFO _IOWR('H', 0x09, struct hiddev_report_info) +#define HIDIOCGFIELDINFO _IOWR('H', 0x0A, struct hiddev_field_info) +#define HIDIOCGUSAGE _IOWR('H', 0x0B, struct hiddev_usage_ref) +#define HIDIOCSUSAGE _IOW('H', 0x0C, struct hiddev_usage_ref) +#define HIDIOCGUCODE _IOWR('H', 0x0D, struct hiddev_usage_ref) +#define HIDIOCGFLAG _IOR('H', 0x0E, int) +#define HIDIOCSFLAG _IOW('H', 0x0F, int) +#define HIDIOCGCOLLECTIONINDEX _IOW('H', 0x10, struct hiddev_usage_ref) +#define HIDIOCGCOLLECTIONINFO _IOWR('H', 0x11, struct hiddev_collection_info) +#define HIDIOCGPHYS(len) _IOC(_IOC_READ, 'H', 0x12, len) + +/* For writing/reading to multiple/consecutive usages */ +#define HIDIOCGUSAGES _IOWR('H', 0x13, struct hiddev_usage_ref_multi) +#define HIDIOCSUSAGES _IOW('H', 0x14, struct hiddev_usage_ref_multi) + +/* + * Flags to be used in HIDIOCSFLAG + */ +#define HIDDEV_FLAG_UREF 0x1 +#define HIDDEV_FLAG_REPORT 0x2 +#define HIDDEV_FLAGS 0x3 + +/* To traverse the input report descriptor info for a HID device, perform the + * following: + * + * rinfo.report_type = HID_REPORT_TYPE_INPUT; + * rinfo.report_id = HID_REPORT_ID_FIRST; + * ret = ioctl(fd, HIDIOCGREPORTINFO, &rinfo); + * + * while (ret >= 0) { + * for (i = 0; i < rinfo.num_fields; i++) { + * finfo.report_type = rinfo.report_type; + * finfo.report_id = rinfo.report_id; + * finfo.field_index = i; + * ioctl(fd, HIDIOCGFIELDINFO, &finfo); + * for (j = 0; j < finfo.maxusage; j++) { + * uref.field_index = i; + * uref.usage_index = j; + * ioctl(fd, HIDIOCGUCODE, &uref); + * ioctl(fd, HIDIOCGUSAGE, &uref); + * } + * } + * rinfo.report_id |= HID_REPORT_ID_NEXT; + * ret = ioctl(fd, HIDIOCGREPORTINFO, &rinfo); + * } + */ + + +#ifdef __KERNEL__ + +/* + * In-kernel definitions. + */ + +struct hid_device; +struct hid_usage; +struct hid_field; +struct hid_report; + +#ifdef CONFIG_USB_HIDDEV +int hiddev_connect(struct hid_device *); +void hiddev_disconnect(struct hid_device *); +void hiddev_hid_event(struct hid_device *hid, struct hid_field *field, + struct hid_usage *usage, __s32 value, struct pt_regs *regs); +void hiddev_report_event(struct hid_device *hid, struct hid_report *report); +int __init hiddev_init(void); +void hiddev_exit(void); +#else +static inline int hiddev_connect(struct hid_device *hid) { return -1; } +static inline void hiddev_disconnect(struct hid_device *hid) { } +static inline void hiddev_hid_event(struct hid_device *hid, struct hid_field *field, + struct hid_usage *usage, __s32 value, struct pt_regs *regs) { } +static inline void hiddev_report_event(struct hid_device *hid, struct hid_report *report) { } +static inline int hiddev_init(void) { return 0; } +static inline void hiddev_exit(void) { } +#endif + +#endif +#endif |