platform/x86: intel_pmc_core: Dump low power status registers on an S0ix.y failure

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Platforms prior to Tiger Lake has no sub-states of S0ix and accessing
device PM states that are latched whenever there is a PC10 entry is
possible with the help of slp_s0_debug_status and slp_s0_dbg_latch
debugfs entries.

If a platform has sub-states of S0ix, no such entries are created.
Hence, dump low power status registers on resume When any attempt to
enter any low power state was unsuccessful.

Cc: Srinivas Pandruvada <srinivas.pandruvada@intel.com>
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: David Box <david.e.box@intel.com>
Suggested-by: David Box <david.e.box@intel.com>
Signed-off-by: Gayatri Kammela <gayatri.kammela@intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

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Gayatri Kammela 2020-02-04 15:01:59 -08:00 • committed by Andy Shevchenko

parent 913f984a83

commit 2e36ac08a9

1 changed files with 4 additions and 0 deletions

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drivers/platform/x86/intel_pmc_core.c

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