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regulator: max77802: set opmode to normal if off is read from hw

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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@gmail.com>
Signed-off-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
Reviewed-by: Doug Anderson <dianders@chromium.org>
Tested-by: Yuvaraj Kumar CD <yuvaraj.cd@samsung.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
This commit is contained in:
Javier Martinez Canillas 2014-08-26 13:37:41 +02:00 committed by Mark Brown
parent 29b9c31802
commit aea8dfb9f3
1 changed files with 11 additions and 1 deletions
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12
drivers/regulator/max77802.c
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@ -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,
&regulators[i], &config);