From 60c7353c6b23537448c7b24498f7bbf8973a81ef Mon Sep 17 00:00:00 2001 From: Hans de Goede Date: Thu, 24 Feb 2022 12:02:40 +0100 Subject: Input: soc_button_array - add support for Microsoft Surface 3 (MSHW0028) buttons The drivers/platform/surface/surface3_button.c code is alsmost a 1:1 copy of the soc_button_array code. The only big difference is that it binds to an i2c_client rather then to a platform_device. The cause of this is the ACPI resources for the MSHW0028 device containing a bogus I2cSerialBusV2 resource which causes the kernel to instantiate an i2c_client for it instead of a platform_device. Add "MSHW0028" to the ignore_serial_bus_ids[] list in drivers/apci/scan.c, so that a platform_device will be instantiated and add support for the MSHW0028 HID to soc_button_array. This fully replaces surface3_button, which will be removed in a separate commit (since it binds to the now no longer created i2c_client it no longer does anyyhing after this commit). Note the MSHW0028 id is used by Microsoft to describe the tablet buttons on both the Surface 3 and the Surface 3 Pro and the actual API/implementation for the Surface 3 Pro is quite different. The changes in this commit should not impact the separate surfacepro3_button driver: 1. Because of the bogus I2cSerialBusV2 resource problem that driver binds to the acpi_device itself, so instantiating a platform_device instead of an i2c_client does not matter. 2. The soc_button_array driver will not bind to the MSHW0028 device on the Surface 3 Pro, because it has no GPIO resources. Signed-off-by: Hans de Goede Reviewed-by: Maximilian Luz Acked-by: Rafael J. Wysocki Acked-by: Dmitry Torokhov Link: https://lore.kernel.org/r/20220224110241.9613-2-hdegoede@redhat.com --- drivers/acpi/scan.c | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'drivers/acpi') diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c index 4463c2eda61e..e993c8b253f5 100644 --- a/drivers/acpi/scan.c +++ b/drivers/acpi/scan.c @@ -1749,6 +1749,11 @@ static bool acpi_device_enumeration_by_parent(struct acpi_device *device) {"INT3515", }, /* Non-conforming _HID for Cirrus Logic already released */ {"CLSA0100", }, + /* + * Some ACPI devs contain SerialBus resources even though they are not + * attached to a serial bus at all. + */ + {"MSHW0028", }, /* * HIDs of device with an UartSerialBusV2 resource for which userspace * expects a regular tty cdev to be created (instead of the in kernel -- cgit v1.2.3