Commit Graph

8 Commits

Author SHA1 Message Date
Vladimir Kondratyev
5f47c5a3a3 hid: Add hid_ioctl method to HID interface
hid_ioctl method executes arbitrary transport backend command.
Format of the command is defined by hardware transport driver.

It is intended to assist HID device drivers to execute non-HID commands
on hybrid devices like Elan and Apple touchpads which can be switched
between HID and proprietary modes.

MFC after:	2 month
2022-03-03 02:35:23 +03:00
Vladimir Kondratyev
be75951af1 hid: Add extra constant to units of measurement
Some devices like eGalax touchscreens use value of 0x33 instead of 0x13
for inches as unit of measure.

Reported by:	Mark Kane <mark_AT_kane_DOT_mn>
MFC after:	1 week
2021-08-16 23:13:24 +03:00
Warner Losh
db2f512381 hid: bump HID_ITEM_MAXUSAGES to 8
My YOGA requires a minimum of 7 to parse w/o an error. Since the memory savings
are trivial and the yoga a popular system, bump the default up to 8. There's no
API/ABI issues in doing this. This hid_item struct isn't exported to userland
and the one libusbhid has is different and only shares a name...

MFC After: 3 days
Reviewed by: wulf@
Differential Revision: https://reviews.freebsd.org/D28543
2021-02-08 15:31:39 -07:00
Vladimir Kondratyev
9be6b22da9 hidraw(4): Add HIDRAW_MAKE_UHID_ALIAS kernel option
which installs /dev/uhid# alias to hidraw character device for
compatibility with some existing uhid(4) users like Firefox.
As side effect it renames traditional uhid(4) driver to hidraw
to make possible using of common unit number allocator.

Requested by:	Greg V <greg_unrelenting.technology>
Reviewed by:	hselasky (as part of D27992)
2021-01-08 02:18:44 +03:00
Vladimir Kondratyev
961a3535db hid: Import HID transport method definitions and helper functions.
Create an abstract HID interface that provides hardware independent
access to HID capabilities and functions through the device tree.

hid_if.m resembles existing USBHID KPI and consist of next methods:

HID method		USBHID variant
-----------------------------------------------------------------------
hid_intr_setup		usbd_transfer_setup	(INTERRUPT IN xfer)
hid_intr_unsetup	usbd_transfer_unsetup	(INTERRUPT IN xfer)
hid_intr_start		usbd_transfer_start	(INTERRUPT IN xfer)
hid_intr_stop		usbd_transfer_drain	(INTERRUPT IN xfer)
hid_intr_poll		usbd_transfer_poll	(INTERRUPT IN xfer)

hid_get_rdesc		usbd_req_get_report_descriptor
hid_read		No direct analog. Not intended for common use.
hid_write		uhid(4) write()
hid_get_report		usbd_req_get_report
hid_set_report		usbd_req_set_report
hid_set_idle		usbd_req_set_idle
hid_set_protocol	usbd_req_set_protocol

This change is part of D27888
2021-01-08 02:18:42 +03:00
Vladimir Kondratyev
1975878673 hid: Import functions and constants required by new subsystem
This does an import of quirk stubs, debugging macros from USB code and
numerous usage constants used by dependent drivers.

Besides, this change renames some functions to get a better matching
with userland library and NetBSD/OpenBSD HID code. Namely:

- Old hid_report_size() renamed to hid_report_size_max()
- New hid_report_size() calculates size of given report rather than
  maximum size of all reports.
- hid_get_data_unsigned() renamed to hid_get_udata()
- hid_put_data_unsigned() renamed to hid_put_udata()

Compat shim functions are provided in usbhid.h to make possible compile
of legacy code unmodified after this change.

Reviewed by:	manu, hselasky
Differential revision:	https://reviews.freebsd.org/D27887
2021-01-08 02:18:42 +03:00
Vladimir Kondratyev
67de2db262 Factor-out hardware-independent part of USB HID support to new module
It will be used by the upcoming HID-over-i2C implementation.  Should be
no-op, except hid.ko module dependency is to be added to affected drivers.

Reviewed by:	hselasky, manu
Differential revision:	https://reviews.freebsd.org/D27867
2021-01-08 02:18:42 +03:00
Vladimir Kondratyev
1ffa5c63f4 Copy HID over USB support files to new sys/dev/hid directory 2021-01-08 02:18:42 +03:00