[PATCH 0/2] Fixes for PMF driver after S4

["Mario Limonciello (AMD)" <superm1@kernel.org>]

Lars Francke reported that the PMF driver fails to work afer S4 with:
  ccp 0000:c3:00.2: tee: command 0x5 timed out, disabling PSP

This is because there is a TA loaded to the TEE environment that
is lost during S4.  The TEE rings need to be reinitialized and the
TA needs to be reloaded.

This series adds those flows.

Note:
I validated this on top of 6.18-rc6.  I could reproduce Lars'
original issue on a Strix laptop and then confirmed that after
applying these two patches that PMF continues to work after resume.
I ran a handful of S4 cycles, module unload tests and reboot tests.

Mario Limonciello (AMD) (1):
  crypto: ccp - Add an S4 restore flow

Shyam Sundar S K (1):
  platform/x86/amd/pmf: Prevent TEE errors after hibernate

 drivers/crypto/ccp/sp-dev.c           | 13 ++++++
 drivers/crypto/ccp/sp-dev.h           |  1 +
 drivers/crypto/ccp/sp-pci.c           | 16 ++++++-
 drivers/crypto/ccp/tee-dev.c          |  6 +++
 drivers/crypto/ccp/tee-dev.h          |  1 +
 drivers/platform/x86/amd/pmf/core.c   | 62 ++++++++++++++++++++++++++-
 drivers/platform/x86/amd/pmf/pmf.h    | 10 +++++
 drivers/platform/x86/amd/pmf/tee-if.c | 12 ++----
 8 files changed, 110 insertions(+), 11 deletions(-)

-- 
2.43.0