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| author | Hans de Goede <hdegoede@redhat.com> | 2023-04-13 11:36:24 +0200 |
|---|---|---|
| committer | Benjamin Tissoires <benjamin.tissoires@redhat.com> | 2023-04-13 16:27:42 +0200 |
| commit | 728ec8b6eda8f61dfeb2a4154e90c134d307e1de (patch) | |
| tree | 7c08bcfd96f633545affef4aa16885c99da8c00d /drivers/hid/i2c-hid/Kconfig | |
| parent | HID: i2c-hid-of: Consistenly use dev local variable in probe() (diff) | |
| download | linux-728ec8b6eda8f61dfeb2a4154e90c134d307e1de.tar.xz linux-728ec8b6eda8f61dfeb2a4154e90c134d307e1de.zip | |
HID: i2c-hid-of: Allow using i2c-hid-of on non OF platforms
There are some x86 tablets / 2-in-1s which ship with Android as their
factory OS image. These have pretty broken ACPI tables, relying on
everything being hardcoded in the factory kernel image.
platform/x86/x86-android-tablets.c manually instantiates i2c-clients for
i2c devices on these tablets to make them work with the mainline kernel.
The Lenovo Yoga Book 1 (yb1-x90f/l) is such a 2-in-1. It has 2 I2C-HID
devices its main touchscreen and a Wacom digitizer. Its main touchscreen
can alternatively also be used in HiDeep's native protocol mode but
for the Wacom digitizer we really need I2C-HID.
This patch allows using i2c-hid-of on non OF platforms so that it can
bind to a non ACPI instantiated i2c_client on x86 for the Wacom digitizer.
Note the driver already has an "i2c-over-hid" i2c_device_id (rather then
an of_device_id).
Besides enabling building on non-OF platforms this also replaces
the only of_property_read_u32() call with device_property_read_u32() note
that other properties where already read using device_property_read_...().
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Link: https://lore.kernel.org/r/20230413093625.71146-3-hdegoede@redhat.com
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Diffstat (limited to 'drivers/hid/i2c-hid/Kconfig')
| -rw-r--r-- | drivers/hid/i2c-hid/Kconfig | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/hid/i2c-hid/Kconfig b/drivers/hid/i2c-hid/Kconfig index 4439be7fa74d..3be17109301a 100644 --- a/drivers/hid/i2c-hid/Kconfig +++ b/drivers/hid/i2c-hid/Kconfig @@ -23,12 +23,14 @@ config I2C_HID_ACPI config I2C_HID_OF tristate "HID over I2C transport layer Open Firmware driver" - depends on OF + # No "depends on OF" because this can also be used for manually + # (board-file) instantiated "hid-over-i2c" type i2c-clients. select I2C_HID_CORE help Say Y here if you use a keyboard, a touchpad, a touchscreen, or any other HID based devices which is connected to your computer via I2C. - This driver supports Open Firmware (Device Tree)-based systems. + This driver supports Open Firmware (Device Tree)-based systems as + well as binding to manually (board-file) instantiated i2c-hid-clients. If unsure, say N. |