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-rw-r--r--drivers/gpu/drm/radeon/Makefile1
-rw-r--r--drivers/gpu/drm/radeon/radeon.h7
-rw-r--r--drivers/gpu/drm/radeon/radeon_acpi.c67
-rw-r--r--drivers/gpu/drm/radeon/radeon_kms.c8
4 files changed, 82 insertions, 1 deletions
diff --git a/drivers/gpu/drm/radeon/Makefile b/drivers/gpu/drm/radeon/Makefile
index 84b1f2729d43..aebe00875041 100644
--- a/drivers/gpu/drm/radeon/Makefile
+++ b/drivers/gpu/drm/radeon/Makefile
@@ -69,5 +69,6 @@ radeon-y += radeon_device.o radeon_asic.o radeon_kms.o \
radeon-$(CONFIG_COMPAT) += radeon_ioc32.o
radeon-$(CONFIG_VGA_SWITCHEROO) += radeon_atpx_handler.o
+radeon-$(CONFIG_ACPI) += radeon_acpi.o
obj-$(CONFIG_DRM_RADEON)+= radeon.o
diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h
index ab61aaa887bb..a5c1a3e9dd39 100644
--- a/drivers/gpu/drm/radeon/radeon.h
+++ b/drivers/gpu/drm/radeon/radeon.h
@@ -1414,6 +1414,13 @@ extern void r700_cp_fini(struct radeon_device *rdev);
extern void evergreen_disable_interrupt_state(struct radeon_device *rdev);
extern int evergreen_irq_set(struct radeon_device *rdev);
+/* radeon_acpi.c */
+#if defined(CONFIG_ACPI)
+extern int radeon_acpi_init(struct radeon_device *rdev);
+#else
+static inline int radeon_acpi_init(struct radeon_device *rdev) { return 0; }
+#endif
+
/* evergreen */
struct evergreen_mc_save {
u32 vga_control[6];
diff --git a/drivers/gpu/drm/radeon/radeon_acpi.c b/drivers/gpu/drm/radeon/radeon_acpi.c
new file mode 100644
index 000000000000..e366434035cb
--- /dev/null
+++ b/drivers/gpu/drm/radeon/radeon_acpi.c
@@ -0,0 +1,67 @@
+#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) {
+ printk(KERN_INFO "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;
+
+ /* No need to proceed if we're sure that ATIF is not supported */
+ if (!ASIC_IS_AVIVO(rdev) || !rdev->bios)
+ return 0;
+
+ /* Get the device handle */
+ handle = DEVICE_ACPI_HANDLE(&rdev->pdev->dev);
+
+ /* Call the ATIF method */
+ ret = radeon_atif_call(handle);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
diff --git a/drivers/gpu/drm/radeon/radeon_kms.c b/drivers/gpu/drm/radeon/radeon_kms.c
index 6a70c0dc7f92..70fda6361cd0 100644
--- a/drivers/gpu/drm/radeon/radeon_kms.c
+++ b/drivers/gpu/drm/radeon/radeon_kms.c
@@ -49,7 +49,7 @@ int radeon_driver_unload_kms(struct drm_device *dev)
int radeon_driver_load_kms(struct drm_device *dev, unsigned long flags)
{
struct radeon_device *rdev;
- int r;
+ int r, acpi_status;
rdev = kzalloc(sizeof(struct radeon_device), GFP_KERNEL);
if (rdev == NULL) {
@@ -77,6 +77,12 @@ int radeon_driver_load_kms(struct drm_device *dev, unsigned long flags)
dev_err(&dev->pdev->dev, "Fatal error during GPU init\n");
goto out;
}
+
+ /* Call ACPI methods */
+ acpi_status = radeon_acpi_init(rdev);
+ if (acpi_status)
+ dev_err(&dev->pdev->dev, "Error during ACPI methods call\n");
+
/* Again modeset_init should fail only on fatal error
* otherwise it should provide enough functionalities
* for shadowfb to run