[PATCH v2] ACPI: DPTF: Add support for high frequency impedance notification

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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@xxxxxxxxx>
---
v1-->v2 : Addressed review comment recevied from Srinivas Pandruvada to add
          corrected the spelling from IMPEDANCED_CHNGED to IMPEDANCE_CHANGED
          under commit message. 
---
 drivers/acpi/dptf/dptf_power.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/acpi/dptf/dptf_power.c b/drivers/acpi/dptf/dptf_power.c
index dc1f52a5b3f4..2ef53ca88714 100644
--- a/drivers/acpi/dptf/dptf_power.c
+++ b/drivers/acpi/dptf/dptf_power.c
@@ -117,7 +117,7 @@ static const struct attribute_group dptf_battery_attribute_group = {
 #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)
@@ -150,6 +150,9 @@ static void dptf_power_notify(acpi_handle handle, u32 event, void *data)
 	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;
-- 
2.17.1




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