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platform/x86: intel-vbtn: Use acpi_evaluate_integer()

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Use acpi_evaluate_integer() instead of open-coding it.

This is a preparation patch for adding a intel_vbtn_has_switches()
helper function.

Fixes: de9647efeaa9 ("platform/x86: intel-vbtn: Only activate tablet mode switch on 2-in-1's")
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
This commit is contained in:
Hans de Goede 2020-05-02 20:29:47 +02:00 committed by Andy Shevchenko
parent 409f3aed82
commit 18937875a2
1 changed files with 6 additions and 13 deletions
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19
drivers/platform/x86/intel-vbtn.c
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@ -119,28 +119,21 @@ static void detect_tablet_mode(struct platform_device *device)
const char *chassis_type = dmi_get_system_info(DMI_CHASSIS_TYPE);
struct intel_vbtn_priv *priv = dev_get_drvdata(&device->dev);
acpi_handle handle = ACPI_HANDLE(&device->dev);
struct acpi_buffer vgbs_output = { ACPI_ALLOCATE_BUFFER, NULL };
union acpi_object *obj;
unsigned long long vgbs;
acpi_status status;
int m;
if (!(chassis_type && strcmp(chassis_type, "31") == 0))
goto out;
return;
status = acpi_evaluate_object(handle, "VGBS", NULL, &vgbs_output);
status = acpi_evaluate_integer(handle, "VGBS", NULL, &vgbs);
if (ACPI_FAILURE(status))
goto out;
return;
obj = vgbs_output.pointer;
if (!(obj && obj->type == ACPI_TYPE_INTEGER))
goto out;
m = !(obj->integer.value & TABLET_MODE_FLAG);
m = !(vgbs & TABLET_MODE_FLAG);
input_report_switch(priv->input_dev, SW_TABLET_MODE, m);
m = (obj->integer.value & DOCK_MODE_FLAG) ? 1 : 0;
m = (vgbs & DOCK_MODE_FLAG) ? 1 : 0;
input_report_switch(priv->input_dev, SW_DOCK, m);
out:
kfree(vgbs_output.pointer);
}
static int intel_vbtn_probe(struct platform_device *device)