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iio: accel: bmc150: Set label based on accel-location on 2-accel yoga-style 2-in-1s
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@redhat.com> Link: https://lore.kernel.org/r/20210207160901.110643-3-hdegoede@redhat.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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1 changed files with 12 additions and 6 deletions
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@ -443,26 +443,32 @@ static bool bmc150_apply_acpi_orientation(struct device *dev,
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struct iio_mount_matrix *orientation)
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{
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struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
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struct iio_dev *indio_dev = dev_get_drvdata(dev);
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struct acpi_device *adev = ACPI_COMPANION(dev);
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char *name, *alt_name, *label, *str;
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union acpi_object *obj, *elements;
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char *name, *alt_name, *str;
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acpi_status status;
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int i, j, val[3];
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if (!adev || !acpi_dev_hid_uid_match(adev, "BOSC0200", NULL))
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return false;
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if (strcmp(dev_name(dev), "i2c-BOSC0200:base") == 0)
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if (strcmp(dev_name(dev), "i2c-BOSC0200:base") == 0) {
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alt_name = "ROMK";
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else
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label = "accel-base";
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} else {
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alt_name = "ROMS";
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label = "accel-display";
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}
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if (acpi_has_method(adev->handle, "ROTM"))
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if (acpi_has_method(adev->handle, "ROTM")) {
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name = "ROTM";
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else if (acpi_has_method(adev->handle, alt_name))
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} else if (acpi_has_method(adev->handle, alt_name)) {
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name = alt_name;
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else
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indio_dev->label = label;
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} else {
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return false;
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}
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status = acpi_evaluate_object(adev->handle, name, NULL, &buffer);
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if (ACPI_FAILURE(status)) {
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