[PATCH v2 0/3] Adjust dGPU handling for BACO

[Mario Limonciello]

This series adjusts the handling for dGPUs when the system is going into
s2idle.  The intent is to match the following truth table below:

+-------------------+----------------------------------+----------------------------------+-----------------------------+
|                   | s2idle (no FADT)                 | s2idle (FADT)                    | deep                        |
+-------------------+----------------------------------+----------------------------------+-----------------------------+
| APU Prepare       | 0                                | 0                                | 0                           |
| APU Suspend       | Run                              | Run                              | Run                         |
| BACO dGPU Prepare | 1 if suspended                   | 1 if suspended                   | 1 if suspended              |
| BACO dGPU Suspend | Runtime suspend if prepare was 0 | Runtime suspend if prepare was 0 | S3 suspend if prepare was 0 |
| BOCO dGPU Prepare | 1                                | 1                                | 1 if suspended              |
| BOCO dGPU Suspend | Runtime suspend if prepare was 0 | Runtime suspend if prepare was 0 | S3 suspend if prepare was 0 |
+-------------------+----------------------------------+----------------------------------+-----------------------------+

That is BACO and BOCO are handled very similarly when system is doing s2idle.

v1->v2:
 * Rework flags and flow
 * Try to do runtime suspend first, and if it fails do system suspend

Mario Limonciello (3):
  drm/amd: Allow dGPUs that support BACO to use smart suspend
  drm/amd: Don't always set s3 for dGPUs in all sleep modes
  drm/amd: Add special handling for system s0ix state w/ dGPUs

 drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c | 11 +++---
 drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c  | 44 +++++++++++++++---------
 2 files changed, 34 insertions(+), 21 deletions(-)

-- 
2.34.1