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power: max17xx: Force POR in Factory

Browse source 
The SOC can become corrupted on battery insertion so
in the factory mode force a POR so it can be recalculated.

Change-Id: Ie16f1cdcd64bc42dc84d70ead95862d2ca080269
Signed-off-by: Kenny Kessler <kenny.kessler@motorola.com>
Reviewed-on: https://gerrit.mot.com/1376496
SLTApproved: Slta Waiver
SME-Granted: SME Approvals Granted
Tested-by: Jira Key
Reviewed-by: Cesar Augusto Marcelino dos Santos <cmsantos@motorola.com>
Reviewed-by: Ryan Lattrel <ryanl@motorola.com>
Reviewed-by: Kenneth Kessler <kennykessler@motorola.com>
Submit-Approved: Jira Key
This commit is contained in:
Kenny Kessler 2019-06-25 10:39:14 -05:00 • committed by Kenneth Kessler
commit bf7648c4b9
1 changed files with 40 additions and 4 deletions
Download patch file Download diff file Expand all files Collapse all files

44
drivers/power/max170xx/max170xx_battery_mmi.c
View file

@ -1250,13 +1250,14 @@ static irqreturn_t max17042_thread_handler(int id, void *dev)
static void max17042_thread_worker(struct work_struct *work)
{
u32 val;
u32 val, val2;
union power_supply_propval ret = {0, };
const char *batt_psy_name;
struct max17042_chip *chip =
container_of(work, struct max17042_chip,
thread_work.work);
struct regmap *map = chip->regmap;
int retval = 0;
if (!chip->batt_psy && chip->pdata->batt_psy_name) {
batt_psy_name = chip->pdata->batt_psy_name;
@ -1265,7 +1266,21 @@ static void max17042_thread_worker(struct work_struct *work)
}
regmap_read(chip->regmap, MAX17042_STATUS, &val);
if ((val & STATUS_POR_BIT) && chip->init_complete) {
if ((val & STATUS_POR_BIT) &&
(chip->init_complete || chip->factory_mode)) {
retval = regmap_read(map, MAX17042_OCVInternal, &val);
if (retval < 0)
val = -EINVAL;
else
val = val * 625 / 8;
retval = regmap_read(map, MAX17042_OCV, &val2);
if (retval < 0)
val2 = -EINVAL;
else
val2 = val2 * 625 / 8;
dev_warn(&chip->client->dev,
"After OCV = %d, OCV Internal = %d\n", val2, val);
dev_warn(&chip->client->dev, "POR Detected, Loading Config\n");
chip->init_complete = 0;
schedule_work(&chip->work);
@ -2453,8 +2468,30 @@ static int max17042_probe(struct i2c_client *client,
val2 &= MAX17050_CFG_REV_MASK;
INIT_WORK(&chip->work, max17042_init_worker);
INIT_DELAYED_WORK(&chip->thread_work, max17042_thread_worker);
if (val & STATUS_POR_BIT) {
if (chip->factory_mode) {
ret = regmap_read(chip->regmap, MAX17042_OCVInternal, &val);
if (ret < 0)
val = -EINVAL;
else
val = val * 625 / 8;
ret = regmap_read(chip->regmap, MAX17042_OCV, &val2);
if (ret < 0)
val2 = -EINVAL;
else
val2 = val2 * 625 / 8;
dev_warn(&client->dev, "Factory Mode so Force POR\n");
dev_warn(&client->dev, "OCV = %d, OCV Internal = %d\n",
val2, val);
regmap_write(chip->regmap, MAX17042_VFSOC0Enable,
MAX17050_FORCE_POR);
chip->init_complete = 0;
schedule_delayed_work(&chip->thread_work,
msecs_to_jiffies(MAX17050_POR_WAIT_MS));
} else if (val & STATUS_POR_BIT) {
dev_warn(&client->dev, "POR Detected, Loading Config\n");
schedule_work(&chip->work);
} else if (val2 != chip->pdata->config_data->revision) {
@ -2478,7 +2515,6 @@ static int max17042_probe(struct i2c_client *client,
"max17042_wake");
INIT_DELAYED_WORK(&chip->iterm_work,
iterm_work);
INIT_DELAYED_WORK(&chip->thread_work, max17042_thread_worker);
schedule_delayed_work(&chip->iterm_work,
msecs_to_jiffies(10000));