139 lines
3.7 KiB
C
139 lines
3.7 KiB
C
/* $OpenBSD: ihidev.h,v 1.9 2022/09/03 15:48:16 kettenis Exp $ */
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/*
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* HID-over-i2c driver
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*
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* Copyright (c) 2015, 2016 joshua stein <jcs@openbsd.org>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <sys/timeout.h>
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/* from usbdi.h: Match codes. */
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/* First five codes is for a whole device. */
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#define IMATCH_VENDOR_PRODUCT_REV 14
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#define IMATCH_VENDOR_PRODUCT 13
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#define IMATCH_VENDOR_DEVCLASS_DEVPROTO 12
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#define IMATCH_DEVCLASS_DEVSUBCLASS_DEVPROTO 11
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#define IMATCH_DEVCLASS_DEVSUBCLASS 10
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/* Next six codes are for interfaces. */
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#define IMATCH_VENDOR_PRODUCT_REV_CONF_IFACE 9
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#define IMATCH_VENDOR_PRODUCT_CONF_IFACE 8
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#define IMATCH_VENDOR_IFACESUBCLASS_IFACEPROTO 7
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#define IMATCH_VENDOR_IFACESUBCLASS 6
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#define IMATCH_IFACECLASS_IFACESUBCLASS_IFACEPROTO 5
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#define IMATCH_IFACECLASS_IFACESUBCLASS 4
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#define IMATCH_IFACECLASS 3
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#define IMATCH_IFACECLASS_GENERIC 2
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/* Generic driver */
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#define IMATCH_GENERIC 1
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/* No match */
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#define IMATCH_NONE 0
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#define IHIDBUSCF_REPORTID 0
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#define IHIDBUSCF_REPORTID_DEFAULT -1
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#define ihidevcf_reportid cf_loc[IHIDBUSCF_REPORTID]
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#define IHIDEV_UNK_REPORTID IHIDBUSCF_REPORTID_DEFAULT
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/* 5.1.1 - HID Descriptor Format */
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struct i2c_hid_desc {
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uint16_t wHIDDescLength;
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uint16_t bcdVersion;
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uint16_t wReportDescLength;
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uint16_t wReportDescRegister;
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uint16_t wInputRegister;
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uint16_t wMaxInputLength;
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uint16_t wOutputRegister;
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uint16_t wMaxOutputLength;
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uint16_t wCommandRegister;
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uint16_t wDataRegister;
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uint16_t wVendorID;
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uint16_t wProductID;
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uint16_t wVersionID;
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uint32_t reserved;
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} __packed;
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struct ihidev_softc {
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struct device sc_dev;
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i2c_tag_t sc_tag;
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i2c_addr_t sc_addr;
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void *sc_ih;
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u_int sc_hid_desc_addr;
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union {
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uint8_t hid_desc_buf[sizeof(struct i2c_hid_desc)];
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struct i2c_hid_desc hid_desc;
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};
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uint8_t *sc_report;
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int sc_reportlen;
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int sc_nrepid;
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struct ihidev **sc_subdevs;
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u_int sc_isize;
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u_char *sc_ibuf;
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int sc_refcnt;
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int sc_poll;
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int sc_frompoll;
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int sc_fastpoll;
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struct timeout sc_timer;
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int sc_dying;
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};
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struct ihidev {
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struct device sc_idev;
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struct ihidev_softc *sc_parent;
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uint8_t sc_report_id;
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uint8_t sc_state;
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#define IHIDEV_OPEN 0x01 /* device is open */
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void (*sc_intr)(struct ihidev *, void *, u_int);
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int sc_isize;
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int sc_osize;
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int sc_fsize;
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};
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struct ihidev_attach_arg {
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struct i2c_attach_args *iaa;
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struct ihidev_softc *parent;
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uint8_t reportid;
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uint8_t claims[16];
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uint8_t nclaims;
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#define IHIDEV_CLAIM_MULTIPLEID 255
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};
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struct i2c_hid_report_request {
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u_int id;
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u_int type;
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#define I2C_HID_REPORT_TYPE_INPUT 0x1
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#define I2C_HID_REPORT_TYPE_OUTPUT 0x2
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#define I2C_HID_REPORT_TYPE_FEATURE 0x3
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void *data;
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u_int len;
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};
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void ihidev_get_report_desc(struct ihidev_softc *, void **, int *);
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int ihidev_open(struct ihidev *);
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void ihidev_close(struct ihidev *);
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int ihidev_ioctl(struct ihidev *, u_long, caddr_t, int, struct proc *);
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int ihidev_report_type_conv(int);
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int ihidev_set_report(struct device *, int, int, void *, int);
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int ihidev_get_report(struct device *, int, int, void *, int);
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void ihidev_poll(void *);
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