Some 2-in-1 laptops / convertibles with 360° (yoga-style) hinges,
use 2 bmc150 accelerometers, defined by a single BOSC0200 ACPI
device node (1 in their base and 1 in their display).
Since in this case we know the location of each accelerometer,
set the label for the accelerometers to the standardized
"accel-display" resp. "accel-base" labels. This way userspace
can use the labels to get the location.
This was tested on a Lenovo ThinkPad Yoga 11e 4th gen (N3450 CPU).
Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx>
---
drivers/iio/accel/bmc150-accel-core.c | 18 ++++++++++++------
1 file changed, 12 insertions(+), 6 deletions(-)
diff --git a/drivers/iio/accel/bmc150-accel-core.c b/drivers/iio/accel/bmc150-accel-core.c
index 7e425ebcd7ea..b0dbd12cbf42 100644
--- a/drivers/iio/accel/bmc150-accel-core.c
+++ b/drivers/iio/accel/bmc150-accel-core.c
@@ -443,26 +443,32 @@ static bool bmc150_apply_acpi_orientation(struct device *dev,
struct iio_mount_matrix *orientation)
{
struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
+ struct iio_dev *indio_dev = dev_get_drvdata(dev);
struct acpi_device *adev = ACPI_COMPANION(dev);
+ char *name, *alt_name, *label, *str;
union acpi_object *obj, *elements;
- char *name, *alt_name, *str;
acpi_status status;
int i, j, val[3];
if (!adev || !acpi_dev_hid_uid_match(adev, "BOSC0200", NULL))
return false;
- if (strcmp(dev_name(dev), "i2c-BOSC0200:base") == 0)
+ if (strcmp(dev_name(dev), "i2c-BOSC0200:base") == 0) {
alt_name = "ROMK";
- else
+ label = "accel-base";
+ } else {
alt_name = "ROMS";
+ label = "accel-display";
+ }
- if (acpi_has_method(adev->handle, "ROTM"))
+ if (acpi_has_method(adev->handle, "ROTM")) {
name = "ROTM";
- else if (acpi_has_method(adev->handle, alt_name))
+ } else if (acpi_has_method(adev->handle, alt_name)) {
name = alt_name;
- else
+ indio_dev->label = label;
+ } else {
return false;
+ }
status = acpi_evaluate_object(adev->handle, name, NULL, &buffer);
if (ACPI_FAILURE(status)) {
--
2.30.0
