[PATCH] GTA02: bq27000 report current charge

[Paul Fertser]

Using HAL for E's battery gadget highlighted an oddity: the kernel exposed
last full charge property but didn't expose current charge property. This
resulted in the wrong computation of current battery capacity by E's gadget
(and probably other programs as well).

This patch exposes a corresponding bq27000 register to make E battery
gadget happy (it is still not showing correct values because of bugs in HAL
resulting in 3 batteries (apm emulation and usb supply being bogus here)
instead of one).

Signed-off-by: Paul Fertser <fercerpav at gmail.com>
---
 drivers/power/bq27000_battery.c |    8 ++++++++
 1 files changed, 8 insertions(+), 0 deletions(-)

diff --git a/drivers/power/bq27000_battery.c b/drivers/power/bq27000_battery.c
index 7e8b3f8..593cbe6 100644
--- a/drivers/power/bq27000_battery.c
+++ b/drivers/power/bq27000_battery.c
@@ -115,6 +115,7 @@ struct bq27000_bat_regs {
 	int		ai;
 	int		flags;
 	int		lmd;
+	int		nac;
 	int		rsoc;
 	int		temp;
 	int		tte;
@@ -271,6 +272,11 @@ use_bat:
 			return di->regs.lmd;
 		val->intval = (di->regs.lmd * 3570) / di->pdata->rsense_mohms;
 		break;
+	case POWER_SUPPLY_PROP_CHARGE_NOW:
+		if (di->regs.nac < 0)
+			return di->regs.nac;
+		val->intval = (di->regs.nac * 3570) / di->pdata->rsense_mohms;
+		break;
 	case POWER_SUPPLY_PROP_TEMP:
 		if (di->regs.temp < 0)
 			return di->regs.temp;
@@ -323,6 +329,7 @@ static void bq27000_battery_work(struct work_struct *work)
 		regs.ai    = hdq_read16(di, BQ27000_AI_L);
 		regs.flags = (di->pdata->hdq_read)(BQ27000_FLAGS);
 		regs.lmd   = hdq_read16(di, BQ27000_LMD_L);
+		regs.nac   = hdq_read16(di, BQ27000_NAC_L);
 		regs.rsoc  = (di->pdata->hdq_read)(BQ27000_RSOC);
 		regs.temp  = hdq_read16(di, BQ27000_TEMP_L);
 		regs.tte   = hdq_read16(di, BQ27000_TTE_L);
@@ -345,6 +352,7 @@ static enum power_supply_property bq27000_battery_props[] = {
 	POWER_SUPPLY_PROP_VOLTAGE_NOW,
 	POWER_SUPPLY_PROP_CURRENT_NOW,
 	POWER_SUPPLY_PROP_CHARGE_FULL,
+	POWER_SUPPLY_PROP_CHARGE_NOW,
 	POWER_SUPPLY_PROP_TEMP,
 	POWER_SUPPLY_PROP_TECHNOLOGY,
 	POWER_SUPPLY_PROP_PRESENT,
-- 
1.6.0.6