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Subject[RFC PATCH 3/5] power/generic-adc-battery: Add support for temperature and add check for charge from iio current channel
Date
From: Marek Belisko <marek.belisko@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.belisko@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
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