[RFC PATCH 3/5] power/generic-adc-battery: Add support for temperature and add check for charge from iio current channel

[Marek Belisko]

From: Marek Belisko <marek.beli...@gmail.com>

Status reporting not working yet. During boot when workqueue is called status
is updated (by reading iio current channel but value is -705 (reason unknown as 
later
report correct value).

Signed-off-by: Marek Belisko <marek.beli...@gmail.com>
---
 drivers/power/supply/generic-adc-battery.c | 18 +++++++++++++++---
 1 file changed, 15 insertions(+), 3 deletions(-)

diff --git a/drivers/power/supply/generic-adc-battery.c 
b/drivers/power/supply/generic-adc-battery.c
index d4daa6a..0d27b59 100644
--- a/drivers/power/supply/generic-adc-battery.c
+++ b/drivers/power/supply/generic-adc-battery.c
@@ -31,6 +31,7 @@ enum gab_chan_type {
        GAB_VOLTAGE = 0,
        GAB_CURRENT,
        GAB_POWER,
+       GAB_TEMPERATURE,
        GAB_MAX_CHAN_TYPE
 };
 
@@ -41,7 +42,8 @@ enum gab_chan_type {
 static const char *const gab_chan_name[] = {
        [GAB_VOLTAGE]   = "voltage",
        [GAB_CURRENT]   = "current",
-       [GAB_POWER]             = "power",
+       [GAB_POWER]     = "power",
+       [GAB_TEMPERATURE] = "temperature",
 };
 
 struct gab {
@@ -78,6 +80,7 @@ static const enum power_supply_property gab_props[] = {
        POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN,
        POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN,
        POWER_SUPPLY_PROP_MODEL_NAME,
+       POWER_SUPPLY_PROP_TEMP,
 };
 
 /*
@@ -123,6 +126,8 @@ static enum gab_chan_type gab_prop_to_chan(enum 
power_supply_property psp)
                return GAB_VOLTAGE;
        case POWER_SUPPLY_PROP_CURRENT_NOW:
                return GAB_CURRENT;
+       case POWER_SUPPLY_PROP_TEMP:
+               return GAB_TEMPERATURE;
        default:
                WARN_ON(1);
                break;
@@ -176,6 +181,7 @@ static int gab_get_property(struct power_supply *psy,
        case POWER_SUPPLY_PROP_VOLTAGE_NOW:
        case POWER_SUPPLY_PROP_CURRENT_NOW:
        case POWER_SUPPLY_PROP_POWER_NOW:
+       case POWER_SUPPLY_PROP_TEMP:
                ret = read_channel(adc_bat, psp, &result);
                if (ret < 0)
                        goto err;
@@ -210,13 +216,19 @@ static void gab_work(struct work_struct *work)
        struct delayed_work *delayed_work;
        bool is_plugged;
        int status;
+       int ret, iio_charge;
 
        delayed_work = to_delayed_work(work);
        adc_bat = container_of(delayed_work, struct gab, bat_work);
        pdata = adc_bat->pdata;
        status = adc_bat->status;
-
-       is_plugged = power_supply_am_i_supplied(adc_bat->psy);
+       ret = read_channel(adc_bat, POWER_SUPPLY_PROP_CURRENT_NOW, &iio_charge);
+       if (ret < 0) {
+               pr_info("Cannot read current channel, ret:%d\n", ret);
+               iio_charge = 0;
+       } else
+               pr_info("iio_charge:%d\n", iio_charge);
+       is_plugged = power_supply_am_i_supplied(adc_bat->psy) || (iio_charge > 
0);
        adc_bat->cable_plugged = is_plugged;
 
        if (!is_plugged)
-- 
2.7.4