Used for fetching external GPU information.
Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
---
drivers/gpu/drm/amd/include/amd_acpi.h | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/drivers/gpu/drm/amd/include/amd_acpi.h b/drivers/gpu/drm/amd/include/amd_acpi.h
index 50e8933..9b9699f 100644
--- a/drivers/gpu/drm/amd/include/amd_acpi.h
+++ b/drivers/gpu/drm/amd/include/amd_acpi.h
@@ -146,6 +146,7 @@ struct atcs_pref_req_output {
# define ATIF_SET_PANEL_EXPANSION_MODE_IN_CMOS_SUPPORTED (1 << 7)
# define ATIF_TEMPERATURE_CHANGE_NOTIFICATION_SUPPORTED (1 << 12)
# define ATIF_GET_GRAPHICS_DEVICE_TYPES_SUPPORTED (1 << 14)
+# define ATIF_GET_EXTERNAL_GPU_INFORMATION_SUPPORTED (1 << 20)
#define ATIF_FUNCTION_GET_SYSTEM_PARAMETERS 0x1
/* ARG0: ATIF_FUNCTION_GET_SYSTEM_PARAMETERS
* ARG1: none
@@ -300,6 +301,17 @@ struct atcs_pref_req_output {
# define ATIF_XGP_PORT (1 << 1)
# define ATIF_VGA_ENABLED_GRAPHICS_DEVICE (1 << 2)
# define ATIF_XGP_PORT_IN_DOCK (1 << 3)
+#define ATIF_FUNCTION_GET_EXTERNAL_GPU_INFORMATION 0x15
+/* ARG0: ATIF_FUNCTION_GET_EXTERNAL_GPU_INFORMATION
+ * ARG1: none
+ * OUTPUT:
+ * WORD - number of reported external gfx devices
+ * WORD - device structure size in bytes (excludes device size field)
+ * WORD - flags \
+ * WORD - bus number / repeated structure
+ */
+/* flags */
+# define ATIF_EXTERNAL_GRAPHICS_PORT (1 << 0)
/* ATPX */
#define ATPX_FUNCTION_VERIFY_INTERFACE 0x0
--
2.5.5
