Tested-by: Yuvaraj Kumar CD <yuvaraj.cd@xxxxxxxxxxx> On Tue, Aug 26, 2014 at 5:07 PM, Javier Martinez Canillas <javier.martinez@xxxxxxxxxxxxxxx> wrote: > The max77802 driver reads the default operating mode (opmode) > set for regulators when enabled from the hardware registers. > > But if a regulator is disabled and the system warm restarted, > the hardware reports OFF as the opmode so the regulator is > not enabled. Default to operating mode NORMAL if OFF is read > from the hardware register. > > Reported-by: Yuvaraj Cd <yuvaraj.lkml@xxxxxxxxx> > Signed-off-by: Javier Martinez Canillas <javier.martinez@xxxxxxxxxxxxxxx> > --- > > This patch fixes the issue reported in https://lkml.org/lkml/2014/8/25/69 > > drivers/regulator/max77802.c | 12 +++++++++++- > 1 file changed, 11 insertions(+), 1 deletion(-) > > diff --git a/drivers/regulator/max77802.c b/drivers/regulator/max77802.c > index ad1caa9..967e109 100644 > --- a/drivers/regulator/max77802.c > +++ b/drivers/regulator/max77802.c > @@ -540,7 +540,17 @@ static int max77802_pmic_probe(struct platform_device *pdev) > config.of_node = pdata->regulators[i].of_node; > > ret = regmap_read(iodev->regmap, regulators[i].enable_reg, &val); > - max77802->opmode[id] = val >> shift & MAX77802_OPMODE_MASK; > + val = val >> shift & MAX77802_OPMODE_MASK; > + > + /* > + * If the regulator is disabled and the system warm rebooted, > + * the hardware reports OFF as the regulator operating mode. > + * Default to operating mode NORMAL in that case. > + */ > + if (val == MAX77802_OPMODE_OFF) > + max77802->opmode[id] = MAX77802_OPMODE_NORMAL; > + else > + max77802->opmode[id] = val; > > rdev = devm_regulator_register(&pdev->dev, > ®ulators[i], &config); > -- > 2.0.1 > -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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