Hi, On Tue, Aug 15, 2017 at 10:04:57PM +0200, Hans de Goede wrote: > Register the 5V boost converter as a regulator named "usb_otg_vbus". > > This commit also adds support for bq24190_platform_data, through which > non device-tree platforms can pass the regulator_init_data (containing > mappings for the consumer amongst other things). > > Signed-off-by: Hans de Goede <[email protected]> > --- > Changes in v2: > -Use "usb_otg_vbus" as default name for the regulator > -Add support for passing regulator_init_data for non device-tree platforms > -Register the regulator later, to avoid it showing up and shortly later > disappearing again on probe errors (e.g. -EPROBE_DEFER). > --- > drivers/power/supply/bq24190_charger.c | 126 > +++++++++++++++++++++++++++++++++ > include/linux/power/bq24190_charger.h | 18 +++++ > 2 files changed, 144 insertions(+) > create mode 100644 include/linux/power/bq24190_charger.h > > diff --git a/drivers/power/supply/bq24190_charger.c > b/drivers/power/supply/bq24190_charger.c > index d5a707e..073cd9d 100644 > --- a/drivers/power/supply/bq24190_charger.c > +++ b/drivers/power/supply/bq24190_charger.c > @@ -16,6 +16,9 @@ > #include <linux/of_device.h> > #include <linux/pm_runtime.h> > #include <linux/power_supply.h> > +#include <linux/power/bq24190_charger.h> > +#include <linux/regulator/driver.h> > +#include <linux/regulator/machine.h> > #include <linux/workqueue.h> > #include <linux/gpio.h> > #include <linux/i2c.h> > @@ -504,6 +507,125 @@ static int bq24190_sysfs_create_group(struct > bq24190_dev_info *bdi) > static inline void bq24190_sysfs_remove_group(struct bq24190_dev_info *bdi) > {} > #endif > > +#ifdef CONFIG_REGULATOR > + > +static int bq24190_vbus_enable(struct regulator_dev *dev) > +{ > + struct bq24190_dev_info *bdi = rdev_get_drvdata(dev); > + int ret; > + > + ret = pm_runtime_get_sync(bdi->dev); > + if (ret < 0) { > + dev_warn(bdi->dev, "pm_runtime_get failed: %i\n", ret); > + pm_runtime_put_noidle(bdi->dev); > + return ret; > + } > + > + ret = bq24190_write_mask(bdi, BQ24190_REG_POC, > + BQ24190_REG_POC_CHG_CONFIG_MASK, > + BQ24190_REG_POC_CHG_CONFIG_SHIFT, > + BQ24190_REG_POC_CHG_CONFIG_OTG); > + > + pm_runtime_mark_last_busy(bdi->dev); > + pm_runtime_put_autosuspend(bdi->dev); > + > + return ret; > +} > + > +static int bq24190_vbus_disable(struct regulator_dev *dev) > +{ > + struct bq24190_dev_info *bdi = rdev_get_drvdata(dev); > + int ret; > + > + ret = pm_runtime_get_sync(bdi->dev); > + if (ret < 0) { > + dev_warn(bdi->dev, "pm_runtime_get failed: %i\n", ret); > + pm_runtime_put_noidle(bdi->dev); > + return ret; > + } > + > + ret = bq24190_write_mask(bdi, BQ24190_REG_POC, > + BQ24190_REG_POC_CHG_CONFIG_MASK, > + BQ24190_REG_POC_CHG_CONFIG_SHIFT, > + BQ24190_REG_POC_CHG_CONFIG_CHARGE); > + > + pm_runtime_mark_last_busy(bdi->dev); > + pm_runtime_put_autosuspend(bdi->dev); > + > + return ret; > +}
Let's reduce code duplication:
static int bq24190_vbus_set(dev, val) {
...
}
static int bq24190_vbus_enable(dev) {
return bq24190_vbus_set(dev, BQ24190_REG_POC_CHG_CONFIG_OTG);
}
static int bq24190_vbus_disable(dev) {
return bq24190_vbus_set(dev, BQ24190_REG_POC_CHG_CONFIG_CHARGE);
}
> +static int bq24190_vbus_is_enabled(struct regulator_dev *dev)
> +{
> + struct bq24190_dev_info *bdi = rdev_get_drvdata(dev);
> + int ret;
> + u8 val;
> +
> + ret = pm_runtime_get_sync(bdi->dev);
> + if (ret < 0) {
> + dev_warn(bdi->dev, "pm_runtime_get failed: %i\n", ret);
> + pm_runtime_put_noidle(bdi->dev);
> + return ret;
> + }
> +
> + ret = bq24190_read_mask(bdi, BQ24190_REG_POC,
> + BQ24190_REG_POC_CHG_CONFIG_MASK,
> + BQ24190_REG_POC_CHG_CONFIG_SHIFT, &val);
> +
> + pm_runtime_mark_last_busy(bdi->dev);
> + pm_runtime_put_autosuspend(bdi->dev);
> +
> + return ret ? ret : val == BQ24190_REG_POC_CHG_CONFIG_OTG;
> +}
> +
> +static const struct regulator_ops bq24190_vbus_ops = {
> + .enable = bq24190_vbus_enable,
> + .disable = bq24190_vbus_disable,
> + .is_enabled = bq24190_vbus_is_enabled,
> +};
> +
> +static const struct regulator_desc bq24190_vbus_desc = {
> + .name = "usb_otg_vbus",
> + .type = REGULATOR_VOLTAGE,
> + .owner = THIS_MODULE,
> + .ops = &bq24190_vbus_ops,
> + .fixed_uV = 5000000,
> + .n_voltages = 1,
> +};
> +
> +static const struct regulator_init_data bq24190_vbus_init_data = {
> + .constraints = {
> + .valid_ops_mask = REGULATOR_CHANGE_STATUS,
> + },
> +};
> +
> +static int bq24190_register_vbus_regulator(struct bq24190_dev_info *bdi)
> +{
> + struct bq24190_platform_data *pdata = bdi->dev->platform_data;
> + struct regulator_config cfg = { };
> + struct regulator_dev *reg;
> + int ret = 0;
> +
> + cfg.dev = bdi->dev;
> + if (pdata && pdata->regulator_init_data)
> + cfg.init_data = pdata->regulator_init_data;
> + else
> + cfg.init_data = &bq24190_vbus_init_data;
> + cfg.driver_data = bdi;
> + reg = devm_regulator_register(bdi->dev, &bq24190_vbus_desc, &cfg);
> + if (IS_ERR(reg)) {
> + ret = PTR_ERR(reg);
> + dev_err(bdi->dev, "Can't register regulator: %d\n", ret);
> + }
> +
> + return ret;
> +}
> +#else
> +static int bq24190_register_vbus_regulator(struct bq24190_dev_info *bdi)
> +{
> + return 0;
> +}
> +#endif
> +
> /*
> * According to the "Host Mode and default Mode" section of the
> * manual, a write to any register causes the bq24190 to switch
> @@ -1577,6 +1699,10 @@ static int bq24190_probe(struct i2c_client *client,
> goto out_sysfs;
> }
>
> + ret = bq24190_register_vbus_regulator(bdi);
> + if (ret < 0)
> + goto out_sysfs;
> +
> if (bdi->extcon) {
> INIT_DELAYED_WORK(&bdi->extcon_work, bq24190_extcon_work);
> bdi->extcon_nb.notifier_call = bq24190_extcon_event;
> diff --git a/include/linux/power/bq24190_charger.h
> b/include/linux/power/bq24190_charger.h
> new file mode 100644
> index 0000000..45ce7f1
> --- /dev/null
> +++ b/include/linux/power/bq24190_charger.h
> @@ -0,0 +1,18 @@
> +/*
> + * Platform data for the TI bq24190 battery charger driver.
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License version 2 as
> + * published by the Free Software Foundation.
> + */
> +
> +#ifndef _BQ24190_CHARGER_H_
> +#define _BQ24190_CHARGER_H_
> +
> +#include <linux/regulator/machine.h>
> +
> +struct bq24190_platform_data {
> + const struct regulator_init_data *regulator_init_data;
> +};
> +
> +#endif
> --
> 2.9.4
>
Otherwise looks fine to me.
-- Sebastian
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