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ODROID-XU4: regulator: s2mps11: call shutdown function to poweroff

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Added .shutdown function to s2mps11 to help poweroff the board successfully.
The device driver clears the register to turn off the PMIC.

s2mps11-pmic: S2MPS11_REG_CTRL1 reg value 16:00000000000000000000000000010000

Console log.

 * Unmounting temporary filesystems...                                   [ OK ]
 * Deactivating swap...                                                  [ OK ]
 * Unmounting local filesystems...                                       [ OK ]
 * Will now halt
[  209.020280] reboot: Power down
[  209.122039] Power down failed, please power off system manually.

Change-Id: If6ea0dec154b00ceeaaddbac393c67dc35c26279
Signed-off-by: Anand Moon <linux.amoon@gmail.com>
Signed-off-by: memeka <mihailescu2m@gmail.com>
Signed-off-by: Marian Mihailescu <mihailescu2m@gmail.com>
This commit is contained in:
Anand Moon
2015-07-12 18:41:20 +05:30
committed by Dongjin Kim
parent 314bd8b0a0
commit 69da2fd9ac
1 changed files with 26 additions and 0 deletions
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26
drivers/regulator/s2mps11.c
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@@ -1244,6 +1244,31 @@ out:
return ret;
}
static void s2mps11_pmic_shutdown(struct platform_device *pdev)
{
struct sec_pmic_dev *iodev = dev_get_drvdata(pdev->dev.parent);
unsigned int reg_val, ret;
ret = regmap_read(iodev->regmap_pmic, S2MPS11_REG_CTRL1, &reg_val);
if (ret < 0) {
dev_crit(&pdev->dev, "could not read S2MPS11_REG_CTRL1 value\n");
} else {
/*
* s2mps11-pmic: S2MPS11_REG_CTRL1 reg value
* is 00000000000000000000000000010000
* clear the S2MPS11_REG_CTRL1 0x10 value to shutdown.
*/
if (reg_val & BIT(4)) {
ret = regmap_update_bits(iodev->regmap_pmic,
S2MPS11_REG_CTRL1,
BIT(4), BIT(0));
if (ret)
dev_crit(&pdev->dev,
"could not write S2MPS11_REG_CTRL1 value\n");
}
}
}
static const struct platform_device_id s2mps11_pmic_id[] = {
{ "s2mps11-regulator", S2MPS11X},
{ "s2mps13-regulator", S2MPS13X},
@@ -1259,6 +1284,7 @@ static struct platform_driver s2mps11_pmic_driver = {
.name = "s2mps11-pmic",
},
.probe = s2mps11_pmic_probe,
.shutdown = s2mps11_pmic_shutdown,
.id_table = s2mps11_pmic_id,
};