diff options
| author | Yunfan Zhang <yunfanz@nvidia.com> | 2013-03-14 11:55:37 +0800 |
|---|---|---|
| committer | Riham Haidar <rhaidar@nvidia.com> | 2013-03-19 16:03:14 -0700 |
| commit | 98f518b471f75168b54c417be13bc512a4f3d178 (patch) | |
| tree | f57db85e072b06eb8a44d627e3fe17ae70341e68 /drivers/regulator | |
| parent | cb0d7198ae26005a8572f013aa339d49987a33db (diff) | |
regulator: bq2419x: add power off on suspend support
Add flag power_off_on_suspend to support shutdown output
unconditionally when suspend.
Change-Id: Iff958a82271c05d4d519246d85e8ab616ff79c5a
Signed-off-by: Yunfan Zhang <yunfanz@nvidia.com>
Reviewed-on: http://git-master/r/209393
Reviewed-by: Automatic_Commit_Validation_User
GVS: Gerrit_Virtual_Submit
Reviewed-by: Laxman Dewangan <ldewangan@nvidia.com>
Diffstat (limited to 'drivers/regulator')
| -rw-r--r-- | drivers/regulator/bq2419x-regulator.c | 35 |
1 files changed, 34 insertions, 1 deletions
diff --git a/drivers/regulator/bq2419x-regulator.c b/drivers/regulator/bq2419x-regulator.c index 8dd9b0358b31..e4f660212cc4 100644 --- a/drivers/regulator/bq2419x-regulator.c +++ b/drivers/regulator/bq2419x-regulator.c @@ -3,7 +3,7 @@ * * Regulator driver for BQ2419X charger. * - * Copyright (c) 2012-2013, NVIDIA Corporation. + * Copyright (c) 2012-2013, NVIDIA CORPORATION. All rights reserved. * * Author: Laxman Dewangan <ldewangan@nvidia.com> * @@ -41,6 +41,7 @@ struct bq2419x_regulator_info { struct regulator_dev *rdev; struct bq2419x_chip *chip; int gpio_otg_iusb; + bool power_off_on_suspend; struct mutex mutex; int shutdown_complete; }; @@ -179,6 +180,7 @@ static int __devinit bq2419x_regulator_probe(struct platform_device *pdev) bq->chip = dev_get_drvdata(pdev->dev.parent); bq->gpio_otg_iusb = pdata->gpio_otg_iusb; + bq->power_off_on_suspend = pdata->power_off_on_suspend; bq->desc.name = "bq2419x-vbus"; bq->desc.id = 0; bq->desc.ops = &bq2419x_dcdc_ops; @@ -239,10 +241,41 @@ static int __devexit bq2419x_regulator_remove(struct platform_device *pdev) return 0; } +#ifdef CONFIG_PM_SLEEP +static int bq2419x_reg_suspend(struct device *dev) +{ + struct bq2419x_regulator_info *bq = dev_get_drvdata(dev); + + if (bq->power_off_on_suspend && bq2419x_dcdc_is_enabled(bq->rdev) > 0) + bq2419x_dcdc_disable(bq->rdev); + return 0; +} + +static int bq2419x_reg_resume(struct device *dev) +{ + struct bq2419x_regulator_info *bq = dev_get_drvdata(dev); + + /* Turn on regulator that might be turned off by bq2419x_reg_suspend() + * and that should be turned on according to the regulators properties. + */ + if (bq->power_off_on_suspend && + (bq->rdev->use_count > 0 || bq->rdev->constraints->always_on)) + bq2419x_dcdc_enable(bq->rdev); + return 0; +} + +static const struct dev_pm_ops bq2419x_reg_pm_ops = { + SET_SYSTEM_SLEEP_PM_OPS(bq2419x_reg_suspend, bq2419x_reg_resume) +}; +#endif + static struct platform_driver bq2419x_regulator_driver = { .driver = { .name = "bq2419x-pmic", .owner = THIS_MODULE, +#ifdef CONFIG_PM_SLEEP + .pm = &bq2419x_reg_pm_ops, +#endif }, .probe = bq2419x_regulator_probe, .shutdown = bq2419x_regulator_shutdown, |