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#include <linux/pci.h>
#include <linux/acpi.h>
#include <linux/slab.h>
#include <acpi/acpi_drivers.h>
#include <acpi/acpi_bus.h>
#include "drmP.h"
#include "drm.h"
#include "drm_sarea.h"
#include "drm_crtc_helper.h"
#include "radeon.h"
#include <linux/vga_switcheroo.h>
/* Call the ATIF method
*
* Note: currently we discard the output
*/
static int radeon_atif_call(acpi_handle handle)
{
acpi_status status;
union acpi_object atif_arg_elements[2];
struct acpi_object_list atif_arg;
struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL};
atif_arg.count = 2;
atif_arg.pointer = &atif_arg_elements[0];
atif_arg_elements[0].type = ACPI_TYPE_INTEGER;
atif_arg_elements[0].integer.value = 0;
atif_arg_elements[1].type = ACPI_TYPE_INTEGER;
atif_arg_elements[1].integer.value = 0;
status = acpi_evaluate_object(handle, "ATIF", &atif_arg, &buffer);
/* Fail only if calling the method fails and ATIF is supported */
if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) {
DRM_DEBUG_DRIVER("failed to evaluate ATIF got %s\n",
acpi_format_exception(status));
kfree(buffer.pointer);
return 1;
}
kfree(buffer.pointer);
return 0;
}
/* Call all ACPI methods here */
int radeon_acpi_init(struct radeon_device *rdev)
{
acpi_handle handle;
int ret;
/* Get the device handle */
handle = DEVICE_ACPI_HANDLE(&rdev->pdev->dev);
/* No need to proceed if we're sure that ATIF is not supported */
if (!ASIC_IS_AVIVO(rdev) || !rdev->bios || !handle)
return 0;
/* Call the ATIF method */
ret = radeon_atif_call(handle);
if (ret)
return ret;
return 0;
}
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