diff options
| author | Rajat Jain <rajatja@google.com> | 2019-04-17 16:01:54 -0700 |
|---|---|---|
| committer | Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2019-05-06 17:54:42 +0300 |
| commit | 2ac8d46dce1b62d19be6a4fa37334c185b1c75fa (patch) | |
| tree | b2999144eebb31b970973d11ba5a6b20cb96b600 /drivers/platform/x86/intel_pmc_core.h | |
| parent | 6c96a78c7b3201ac012c6e3b487e41e4558fa621 (diff) | |
| download | linux-2ac8d46dce1b62d19be6a4fa37334c185b1c75fa.tar.bz2 | |
platform/x86: intel_pmc_core: Allow to dump debug registers on S0ix failure
Add a module parameter which when enabled, will check on resume, if the
last S0ix attempt was successful. If not, the driver would warn and provide
helpful debug information (which gets latched during the failed suspend
attempt) to debug the S0ix failure.
This information is very useful to debug S0ix failures. Specially since
the latched debug information will be lost (over-written) if the system
attempts to go into runtime (or imminent) S0ix again after that failed
suspend attempt.
Signed-off-by: Rajat Jain <rajatja@google.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Diffstat (limited to 'drivers/platform/x86/intel_pmc_core.h')
| -rw-r--r-- | drivers/platform/x86/intel_pmc_core.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/platform/x86/intel_pmc_core.h b/drivers/platform/x86/intel_pmc_core.h index 88d9c0653a5f..fdee5772e532 100644 --- a/drivers/platform/x86/intel_pmc_core.h +++ b/drivers/platform/x86/intel_pmc_core.h @@ -241,6 +241,9 @@ struct pmc_reg_map { * @pmc_xram_read_bit: flag to indicate whether PMC XRAM shadow registers * used to read MPHY PG and PLL status are available * @mutex_lock: mutex to complete one transcation + * @check_counters: On resume, check if counters are getting incremented + * @pc10_counter: PC10 residency counter + * @s0ix_counter: S0ix residency (step adjusted) * * pmc_dev contains info about power management controller device. */ @@ -253,6 +256,10 @@ struct pmc_dev { #endif /* CONFIG_DEBUG_FS */ int pmc_xram_read_bit; struct mutex lock; /* generic mutex lock for PMC Core */ + + bool check_counters; /* Check for counter increments on resume */ + u64 pc10_counter; + u64 s0ix_counter; }; #endif /* PMC_CORE_H */ |