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| author | Hans de Goede <hdegoede@redhat.com> | 2021-12-30 12:57:47 +0100 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2021-12-30 17:34:27 +0100 |
| commit | f85196bdd5a50da74670250564740fc852b3c239 (patch) | |
| tree | c01b6fab74809039c742efea72b43a359a4442c0 /fs/unicode | |
| parent | 99ece713773bfa17fdb4ee2a1fb3b7bee82e4b1a (diff) | |
ACPI: scan: Create platform device for BCM4752 and LNV4752 ACPI nodes
BCM4752 and LNV4752 ACPI nodes describe a Broadcom 4752 GPS module
attached to an UART of the system.
The GPS modules talk a custom protocol which only works with a closed-
source Android gpsd daemon which knows this protocol.
The ACPI nodes also describe GPIOs to turn the GPS on/off these are
handled by the net/rfkill/rfkill-gpio.c code. This handling predates the
addition of enumeration of ACPI instantiated serdevs to the kernel and
was broken by that addition, because the ACPI scan code now no longer
instantiates platform_device-s for these nodes.
Rename the i2c_multi_instantiate_ids HID list to ignore_serial_bus_ids
and add the BCM4752 and LNV4752 HIDs, so that rfkill-gpio gets
a platform_device to bind to again; and so that a tty cdev for gpsd
gets created for these.
Fixes: e361d1f85855 ("ACPI / scan: Fix enumeration for special UART devices")
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'fs/unicode')
0 files changed, 0 insertions, 0 deletions