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systemd-stable/hwdb.d/meson.build
Takashi Sakamoto f125f8b1ba hwdb: add hardware database for unit of IEEE 1394
Current udev rules configures group owner of firewire character device
to video group, corresponding to nodes in IEEE 1394 in below cases:

1.the node with any unit for any minor version of IIDC version 1
  specification defined by 1394 Trading Association
2.the node with any unit for specification defined by Point Grey Research
3.the node with any unit for AV/C device v1.0 defined by 1394 Trading
  Association
4.the node with any unit for vendor-unique protocol defined by 1394
  Trading Association

Nevertheless, case 3 and 4 can cover the node with any unit for audio
function as well. In the cases, it's convenient to assign audio group.

Additionally, some nodes are known to have layout different from
the specification defined by 1394 Trading Association. In the case,
it's required to add rules specific to them.

Furthermore, some nodes have no fields for vendor name and model name in
configuration ROM. In the case, it's required to add entries to hardware
database for users convenience.

For the above reasons, this commit adds rules to use information in
hardware database for known units in IEEE 1394. One database entry
corresponds to one unit. Two types of key are used to match the unit;
customized key from node context, kernel modalias of unit context.
The entry has the type of function, at least. Supplementally, it has
vendor and model names.

For your information, below statements with Python pyparsing module are
expected to parse all of the custom key and module alias in the list:

```
subsystem_prefix = pp.Literal('ieee1394:').suppress()
hex_to_int = lambda a: int(a[0], 16)

node_prefix = pp.Literal('node:').suppress()
prefixed_lower_hex = pp.Combine(pp.Literal('0x') + pp.Word(pp.srange('[a-z0-9]'), exact=6)).setParseAction(hex_to_int)
ven_in_node = pp.dictOf(pp.Literal('ven'), prefixed_lower_hex)
mo_in_node = pp.dictOf(pp.Literal('mo'), prefixed_lower_hex)
unit_in_node = pp.Group(prefixed_lower_hex + pp.Literal(':').suppress() + prefixed_lower_hex)
units_in_node = pp.Group(pp.Literal('units') + pp.ZeroOrMore(pp.Literal('*')).suppress() + unit_in_node + pp.ZeroOrMore(pp.Literal('*')).suppress())
node_parser = subsystem_prefix + node_prefix + ven_in_node + pp.Optional(mo_in_node) + units_in_node

higher_hex = pp.Word(pp.srange('[A-Z0-9]'), exact=8).setParseAction(hex_to_int)
ven_in_unit = pp.dictOf(pp.Literal('ven'), higher_hex)
mo_literal_in_unit = pp.dictOf(pp.Literal('mo'), higher_hex)
mo_in_unit = pp.dictOf(pp.Literal('mo'), higher_hex ^ pp.Literal('*'))
sp_in_unit = pp.dictOf(pp.Literal('sp'), higher_hex)
ver_in_unit = pp.dictOf(pp.Literal('ver'), higher_hex)
unit_parser = subsystem_prefix + ven_in_unit + mo_in_unit + sp_in_unit + ver_in_unit

key_parser = node_parser ^ unit_parser
```

Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
2021-04-07 11:49:22 +09:00

77 lines
2.4 KiB
Meson

# SPDX-License-Identifier: LGPL-2.1-or-later
# Those files right now are not supported by the grammar. Also,
# they are very long but quite repetitive and the parser is not very fast.
# So we don't "test" them.
hwdb_files_notest = files('''
README
20-dmi-id.hwdb
20-pci-vendor-model.hwdb
20-pci-classes.hwdb
20-usb-vendor-model.hwdb
20-usb-classes.hwdb
20-sdio-vendor-model.hwdb
20-sdio-classes.hwdb
20-bluetooth-vendor-product.hwdb
20-acpi-vendor.hwdb
20-OUI.hwdb
20-net-ifname.hwdb
20-vmbus-class.hwdb
'''.split())
hwdb_files_test = files('''
60-autosuspend.hwdb
60-autosuspend-fingerprint-reader.hwdb
60-evdev.hwdb
60-input-id.hwdb
60-keyboard.hwdb
60-sensor.hwdb
70-joystick.hwdb
70-mouse.hwdb
70-pointingstick.hwdb
70-touchpad.hwdb
80-ieee1394-unit-function.hwdb
'''.split())
if conf.get('ENABLE_HWDB') == 1
auto_suspend_rules = custom_target(
'60-autosuspend-chromiumos.hwdb',
output : '60-autosuspend-chromiumos.hwdb',
command : make_autosuspend_rules_py,
capture : true,
install : true,
install_dir: udevhwdbdir)
install_data(hwdb_files_notest,
hwdb_files_test,
install_dir : udevhwdbdir)
if install_sysconfdir
meson.add_install_script('sh', '-c',
mkdir_p.format(join_paths(sysconfdir, 'udev/hwdb.d')))
meson.add_install_script('sh', '-c',
'test -n "$DESTDIR" || @0@/systemd-hwdb update'
.format(rootbindir))
endif
if want_tests != 'false'
parse_hwdb_py = find_program('parse_hwdb.py')
test('parse-hwdb',
parse_hwdb_py,
args : [hwdb_files_test,
auto_suspend_rules],
timeout : 90)
endif
endif
############################################################
run_target(
'update-hwdb',
command : [update_hwdb_sh, meson.current_source_dir()])
run_target(
'update-hwdb-autosuspend',
command : [update_hwdb_autosuspend_sh, project_source_root])