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Commit 8285052e authored by Alex Deucher's avatar Alex Deucher
Browse files

drm/amdgpu: add new ATIF ACPI method 



Used for fetching external GPU information.

Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 166c8178

drivers/gpu/drm/amd/include/amd_acpi.h

+12 −0
Original line number Diff line number Diff line
@@ -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