platform/x86: ISST: Add suspend/resume callbacks

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To support S3/S4 with TPMI interface add suspend/resume callbacks.
Here HW state is stored in suspend callback and restored during
resume callback.

The hardware state which needs to be stored/restored:
- CLOS configuration
- CLOS Association
- SST-CP enable/disable status
- SST-PP perf level setting

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Suggested-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Zhang Rui <rui.zhang@intel.com>
Tested-by: Pragya Tanwar <pragya.tanwar@intel.com>
Link: https://lore.kernel.org/r/20230308070642.1727167-9-srinivas.pandruvada@linux.intel.com
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>

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Srinivas Pandruvada 2023-03-07 23:06:42 -08:00 • committed by Hans de Goede

parent f8e0077a9d

commit 91576acab0

3 changed files with 70 additions and 0 deletions

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19

drivers/platform/x86/intel/speed_select_if/isst_tpmi.c

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49

drivers/platform/x86/intel/speed_select_if/isst_tpmi_core.c

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2

drivers/platform/x86/intel/speed_select_if/isst_tpmi_core.h

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