platform/x86/intel/pmc: core: Report duration of time in HW sleep state

intel_pmc_core displays a warning when the module parameter
`warn_on_s0ix_failures` is set and a suspend didn't get to a HW sleep
state.

Report this to the standard kernel reporting infrastructure so that
userspace software can query after the suspend cycle is done.

Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Suggested-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Reviewed-by: David E. Box <david.e.box@linux.intel.com>
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

diff --git a/drivers/platform/x86/intel/pmc/core.c b/drivers/platform/x86/intel/pmc/core.c
index 925c5d6..298f27b 100644 (file)
--- a/drivers/platform/x86/intel/pmc/core.c
+++ b/drivers/platform/x86/intel/pmc/core.c
@@ -1153,6 +1153,8 @@ static int pmc_core_probe(struct platform_device *pdev)
        pmc_core_do_dmi_quirks(pmcdev);
 
        pmc_core_dbgfs_register(pmcdev);
+       pm_report_max_hw_sleep(FIELD_MAX(SLP_S0_RES_COUNTER_MASK) *
+                              pmc_core_adjust_slp_s0_step(pmcdev, 1));
 
        device_initialized = true;
        dev_info(&pdev->dev, " initialized\n");
@@ -1214,6 +1216,8 @@ static inline bool pmc_core_is_s0ix_failed(struct pmc_dev *pmcdev)
        if (pmc_core_dev_state_get(pmcdev, &s0ix_counter))
                return false;
 
+       pm_report_hw_sleep_time((u32)(s0ix_counter - pmcdev->s0ix_counter));
+
        if (s0ix_counter == pmcdev->s0ix_counter)
                return true;
 

diff --git a/drivers/platform/x86/intel/pmc/core.h b/drivers/platform/x86/intel/pmc/core.h
index 51d73ef..9ca9b97 100644 (file)
--- a/drivers/platform/x86/intel/pmc/core.h
+++ b/drivers/platform/x86/intel/pmc/core.h
@@ -16,6 +16,8 @@
 #include <linux/bits.h>
 #include <linux/platform_device.h>
 
+#define SLP_S0_RES_COUNTER_MASK                        GENMASK(31, 0)
+
 #define PMC_BASE_ADDR_DEFAULT                  0xFE000000
 
 /* Sunrise Point Power Management Controller PCI Device ID */