From: Sumeet Pawnikar <sumeet.r.pawnikar@intel.com>
Date: Thu, 5 May 2022 22:30:19 +0530
Subject: ACPI: DPTF: Add support for high frequency impedance notification
Patch-mainline: v5.19-rc1
Git-commit: 42e5ed0618030543e4f679afa5e42ec8ab9337bb
References: jsc#PED-1408

Add high frequency impedance notification support under DPTF.
This returns high frequency impedance value that can be obtained
from battery fuel gauge whenever there is change over a threshold.
Also, corrected the typo from IMPEDANCED_CHNGED to IMPEDANCE_CHANGED.

Signed-off-by: Sumeet Pawnikar <sumeet.r.pawnikar@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Lee, Chun-Yi <jlee@suse.com>
---
 drivers/acpi/dptf/dptf_power.c |    5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

--- a/drivers/acpi/dptf/dptf_power.c
+++ b/drivers/acpi/dptf/dptf_power.c
@@ -115,7 +115,7 @@ static const struct attribute_group dptf
 #define POWER_STATE_CHANGED		0x81
 #define STEADY_STATE_POWER_CHANGED	0x83
 #define POWER_PROP_CHANGE_EVENT	0x84
-#define IMPEDANCED_CHNGED		0x85
+#define IMPEDANCE_CHANGED		0x85
 #define VOLTAGE_CURRENT_CHANGED	0x86
 
 static long long dptf_participant_type(acpi_handle handle)
@@ -148,6 +148,9 @@ static void dptf_power_notify(acpi_handl
 	case STEADY_STATE_POWER_CHANGED:
 		attr = "max_steady_state_power_mw";
 		break;
+	case IMPEDANCE_CHANGED:
+		attr = "high_freq_impedance_mohm";
+		break;
 	case VOLTAGE_CURRENT_CHANGED:
 		attr = "no_load_voltage_mv";
 		break;