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/* $OpenBSD: ihidev.h,v 1.1 2016/01/12 01:11:15 jcs Exp $ */
/*
* HID-over-i2c driver
*
* http://download.microsoft.com/download/7/d/d/7dd44bb7-2a7a-4505-ac1c-7227d3d96d5b/hid-over-i2c-protocol-spec-v1-0.docx
*
* Copyright (c) 2015 joshua stein <jcs@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/* from usbdi.h: Match codes. */
/* First five codes is for a whole device. */
#define IMATCH_VENDOR_PRODUCT_REV 14
#define IMATCH_VENDOR_PRODUCT 13
#define IMATCH_VENDOR_DEVCLASS_DEVPROTO 12
#define IMATCH_DEVCLASS_DEVSUBCLASS_DEVPROTO 11
#define IMATCH_DEVCLASS_DEVSUBCLASS 10
/* Next six codes are for interfaces. */
#define IMATCH_VENDOR_PRODUCT_REV_CONF_IFACE 9
#define IMATCH_VENDOR_PRODUCT_CONF_IFACE 8
#define IMATCH_VENDOR_IFACESUBCLASS_IFACEPROTO 7
#define IMATCH_VENDOR_IFACESUBCLASS 6
#define IMATCH_IFACECLASS_IFACESUBCLASS_IFACEPROTO 5
#define IMATCH_IFACECLASS_IFACESUBCLASS 4
#define IMATCH_IFACECLASS 3
#define IMATCH_IFACECLASS_GENERIC 2
/* Generic driver */
#define IMATCH_GENERIC 1
/* No match */
#define IMATCH_NONE 0
#define IHIDBUSCF_REPORTID 0
#define IHIDBUSCF_REPORTID_DEFAULT -1
#define ihidevcf_reportid cf_loc[IHIDBUSCF_REPORTID]
#define IHIDEV_UNK_REPORTID IHIDBUSCF_REPORTID_DEFAULT
/* 5.1.1 - HID Descriptor Format */
struct i2c_hid_desc {
uint16_t wHIDDescLength;
uint16_t bcdVersion;
uint16_t wReportDescLength;
uint16_t wReportDescRegister;
uint16_t wInputRegister;
uint16_t wMaxInputLength;
uint16_t wOutputRegister;
uint16_t wMaxOutputLength;
uint16_t wCommandRegister;
uint16_t wDataRegister;
uint16_t wVendorID;
uint16_t wProductID;
uint16_t wVersionID;
uint32_t reserved;
} __packed;
struct ihidev_softc {
struct device sc_dev;
i2c_tag_t sc_tag;
i2c_addr_t sc_addr;
void *sc_ih;
union {
uint8_t hid_desc_buf[sizeof(struct i2c_hid_desc)];
struct i2c_hid_desc hid_desc;
};
uint8_t *sc_report;
int sc_reportlen;
u_int sc_nrepid;
struct ihidev **sc_subdevs;
u_int sc_isize;
u_char *sc_ibuf;
int sc_refcnt;
};
struct ihidev {
struct device sc_idev;
struct ihidev_softc *sc_parent;
uint8_t sc_report_id;
uint8_t sc_state;
#define IHIDEV_OPEN 0x01 /* device is open */
void (*sc_intr)(struct ihidev *, void *, u_int);
int sc_isize;
int sc_osize;
int sc_fsize;
};
struct ihidev_attach_arg {
struct i2c_attach_args *iaa;
struct ihidev_softc *parent;
uint8_t reportid;
#define IHIDEV_CLAIM_ALLREPORTID 255
};
void ihidev_get_report_desc(struct ihidev_softc *, void **, int *);
int ihidev_open(struct ihidev *);
void ihidev_close(struct ihidev *);
int ihidev_ioctl(struct ihidev *, u_long, caddr_t, int, struct proc *);
int ihidev_set_report(struct ihidev_softc *, int, int, void *, int);
int ihidev_set_report_async(struct ihidev_softc *, int, int, void *, int);
int ihidev_get_report(struct ihidev_softc *, int, int, void *, int);
int ihidev_get_report_async(struct ihidev_softc *, int, int, void *, int,
void *, void (*)(void *, int, void *, int));
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