nvec_battery:Handling critical battery condition

1. nvec.h:Correcting enum ordering for NvEcBatterySubtype
   as per ECI specs.
   NvEcBatterySubtype_SetRemainingCapacityAlarm and
   NvEcBatterySubtype_GetRemainingCapacityAlar
   >> Verified

2. Registering interrupt for LOW_BAT# from T20 pinmux table:-
   GPIO interrupt for Low battery on port w and pin 3
>> Already verified on Wince.
   On Android when 0% power is left device
   is shutdown. Harmony has this setting around 9.3V which is
   less when the battery is at 0%.

3. Enabling LOW_BAT# as a wakeup source 11 from suspend
>> As point no. 2 is wokring this should also work.
   This is not verfied as in suspend battery discharge
   is slow.

4. Enabling Low capacity alarm as a wakeup source suspend
>> As remaining capacity alarm is working this should also
   work.
   This is not verfied as in suspend battery discharge
   is slow.

5. Setting the 10% of Design capacit as threshold for
   Remaining capacity alaram event.
>> Verified

6. Adding 4 functions which are needed for EC firmware validation
   NvOdmBatterySetRemCapacityAlarm
   NvOdmBatteryGetRemCapacityAlarm
   NvOdmBatterySetConfiguration
   NvOdmBatteryGetConfiguration
>> Verified

7. Calling kernel_power_off() when device is running on only battery
   and it is ctitically low to gracefully shutdown the system.
>> Verified

Tested on harmony + eclair + battery

Change-Id: I6f4c8a1866ba63c293813b180cc5b74714aa23cd
Reviewed-on: http://git-master/r/976
Reviewed-by: Sachin Nikam <snikam@nvidia.com>
Tested-by: Sachin Nikam <snikam@nvidia.com>
Tested-by: Bharat Nihalani <bnihalani@nvidia.com>
Reviewed-by: Gary King <gking@nvidia.com>

2 files changed, 10 insertions, 1 deletions

diff --git a/arch/arm/mach-tegra/odm_kit/query/harmony/nvodm_query.c b/arch/arm/mach-tegra/odm_kit/query/harmony/nvodm_query.c
index 63116a5d9557..b21a8bd57ed5 100644
--- a/arch/arm/mach-tegra/odm_kit/query/harmony/nvodm_query.c
+++ b/arch/arm/mach-tegra/odm_kit/query/harmony/nvodm_query.c
@@ -305,7 +305,7 @@ static NvOdmWakeupPadInfo s_NvOdmWakeupPadInfo[] =
     {NV_FALSE,  8, NvOdmWakeupPadPolarity_AnyEdge}, // Wake Event  8 - gmi_wp_n (MICRO SD_CD)
     {NV_FALSE,  9, NvOdmWakeupPadPolarity_High},    // Wake Event  9 - gp3_ps[2] (KB_COL10)
     {NV_FALSE, 10, NvOdmWakeupPadPolarity_High},    // Wake Event 10 - gmi_ad21 (Accelerometer_TH/TAP)
-    {NV_FALSE, 11, NvOdmWakeupPadPolarity_Low},     // Wake Event 11 - spi2_cs2 (PEN_INT, AUDIO-IRQ)
+    {NV_TRUE,  11, NvOdmWakeupPadPolarity_Low},     // Wake Event 11 - spi2_cs2 (PEN_INT, AUDIO-IRQ, LOW_BAT#)
     {NV_FALSE, 12, NvOdmWakeupPadPolarity_Low},     // Wake Event 12 - spi2_cs1 (HEADSET_DET, not used)
     {NV_FALSE, 13, NvOdmWakeupPadPolarity_Low},     // Wake Event 13 - sdio1_dat1
     {NV_FALSE, 14, NvOdmWakeupPadPolarity_High},    // Wake Event 14 - gp3_pv[6] (WLAN_INT)
diff --git a/arch/arm/mach-tegra/odm_kit/query/harmony/nvodm_query_gpio.c b/arch/arm/mach-tegra/odm_kit/query/harmony/nvodm_query_gpio.c
index 1868bffa7fd7..8d384db176ee 100644
--- a/arch/arm/mach-tegra/odm_kit/query/harmony/nvodm_query_gpio.c
+++ b/arch/arm/mach-tegra/odm_kit/query/harmony/nvodm_query_gpio.c
@@ -153,6 +153,11 @@ static const NvOdmGpioPinInfo s_WakeFromKeyBoard[] = {
     {NVODM_PORT('a'), 0, NvOdmGpioPinActiveState_Low}   // EC Keyboard Wakeup
 };
 
+static const NvOdmGpioPinInfo s_Battery[] = {
+    // Low Battery
+    {NVODM_PORT('w'), 3, NvOdmGpioPinActiveState_Low},
+};
+
 const NvOdmGpioPinInfo *NvOdmQueryGpioPinMap(NvOdmGpioPinGroup Group,
     NvU32 Instance, NvU32 *pCount)
 {
@@ -224,6 +229,10 @@ const NvOdmGpioPinInfo *NvOdmQueryGpioPinMap(NvOdmGpioPinGroup Group,
             *pCount = NVODM_ARRAY_SIZE(s_WakeFromKeyBoard);
             return s_WakeFromKeyBoard;
 
+        case NvOdmGpioPinGroup_Battery:
+            *pCount = NVODM_ARRAY_SIZE(s_Battery);
+            return s_Battery;
+
         default:
             *pCount = 0;
             return NULL;