Hi Beomho, On Mon, Mar 09, 2015 at 10:23:10AM +0900, Beomho Seo wrote: > This patch add device driver of Richtek RT5033 PMIC. The driver support > switching charger. rt5033 charger provide three charging mode. > Three charging mode are pre charge mode, fast cahrge mode and constant voltage > mode. They are have vary charge rate, charge parameters. The charge parameters > can be controlled by i2c interface. Driver looks mostly ok, but I have some comments [inline]. > Cc: Sebastian Reichel <sre@xxxxxxxxxx> > Cc: Dmitry Eremin-Solenikov <dbaryshkov@xxxxxxxxx> > Cc: David Woodhouse <dwmw2@xxxxxxxxxxxxx> > Signed-off-by: Beomho Seo <beomho.seo@xxxxxxxxxxx> > Acked-by: Chanwoo Choi <cw00.choi@xxxxxxxxxxx> > --- > Changes in v5 > - none. > Changes in v4 > - Change power supply type to POWER_SUPPLY_TYPE_MAINS. > Changes in v3 > Changes in v2 > - none > > drivers/power/Kconfig | 8 + > drivers/power/Makefile | 1 + > drivers/power/rt5033_charger.c | 485 ++++++++++++++++++++++++++++++++++++++++ > 3 files changed, 494 insertions(+) > create mode 100644 drivers/power/rt5033_charger.c > > diff --git a/drivers/power/Kconfig b/drivers/power/Kconfig > index 27b751b..67e9af7 100644 > --- a/drivers/power/Kconfig > +++ b/drivers/power/Kconfig > @@ -418,6 +418,14 @@ config BATTERY_RT5033 > The fuelgauge calculates and determines the battery state of charge > according to battery open circuit voltage. > > +config CHARGER_RT5033 > + tristate "RT5033 battery charger support" > + depends on MFD_RT5033 > + help > + This adds support for battery charger in Richtek RT5033 PMIC. > + The device supports pre-charge mode, fast charge mode and > + constant voltage mode. > + > source "drivers/power/reset/Kconfig" > > endif # POWER_SUPPLY > diff --git a/drivers/power/Makefile b/drivers/power/Makefile > index 36f9e0d..c5d72e0 100644 > --- a/drivers/power/Makefile > +++ b/drivers/power/Makefile > @@ -59,6 +59,7 @@ obj-$(CONFIG_CHARGER_BQ2415X) += bq2415x_charger.o > obj-$(CONFIG_CHARGER_BQ24190) += bq24190_charger.o > obj-$(CONFIG_CHARGER_BQ24735) += bq24735-charger.o > obj-$(CONFIG_POWER_AVS) += avs/ > +obj-$(CONFIG_POWER_RT5033) += rt5033_charger.o this should be obj-$(CONFIG_CHARGER_RT5033) += rt5033_charger.o according to your Kconfig patch. How did you test it actually? > obj-$(CONFIG_CHARGER_SMB347) += smb347-charger.o > obj-$(CONFIG_CHARGER_TPS65090) += tps65090-charger.o > obj-$(CONFIG_POWER_RESET) += reset/ > diff --git a/drivers/power/rt5033_charger.c b/drivers/power/rt5033_charger.c > new file mode 100644 > index 0000000..7f8f6c3 > --- /dev/null > +++ b/drivers/power/rt5033_charger.c > > [...] > > +static int rt5033_get_charger_current(struct rt5033_charger *charger, > + enum power_supply_property psp) > +{ > + struct regmap *regmap = charger->rt5033->regmap; > + unsigned int state, reg_data, data; > + > + if (psp == POWER_SUPPLY_PROP_CURRENT_MAX) > + return RT5033_CHG_MAX_CURRENT; drop this psp check and the psp parameter to this function, so that the function only takes care of the current current. > + regmap_read(regmap, RT5033_REG_CHG_CTRL5, ®_data); > + > + state = (reg_data >> RT5033_CHGCTRL5_ICHG_SHIFT) & 0xf; > + > + if (state > RT5033_CHG_MAX_CURRENT) > + state = RT5033_CHG_MAX_CURRENT; > + > + data = state * 100 + 700; > + > + return data; > +} > + > +static int rt5033_get_charge_voltage(struct rt5033_charger *charger, > + enum power_supply_property psp) > +{ > + struct regmap *regmap = charger->rt5033->regmap; > + unsigned int state, reg_data, data; > + > + if (psp == POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX) > + return RT5033_CHARGER_CONST_VOLTAGE_LIMIT_MAX; drop this psp check and the psp parameter to this function, so that the function only takes care of the current voltage. > + regmap_read(regmap, RT5033_REG_CHG_CTRL2, ®_data); > + > + state = reg_data >> 2; > + > + data = RT5033_CHARGER_CONST_VOLTAGE_LIMIT_MIN + > + RT5033_CHARGER_CONST_VOLTAGE_STEP_NUM * state; > + > + if (data > RT5033_CHARGER_CONST_VOLTAGE_LIMIT_MAX) > + data = RT5033_CHARGER_CONST_VOLTAGE_LIMIT_MAX; > + > + return data; > +} > > [...] > > + > +static enum power_supply_property rt5033_charger_props[] = { > + POWER_SUPPLY_PROP_STATUS, > + POWER_SUPPLY_PROP_CHARGE_TYPE, > + POWER_SUPPLY_PROP_CURRENT_NOW, > + POWER_SUPPLY_PROP_CURRENT_MAX, > + POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE, > + POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX, > + POWER_SUPPLY_PROP_MODEL_NAME, > + POWER_SUPPLY_PROP_MANUFACTURER, > +}; > + > +static int rt5033_charger_get_property(struct power_supply *psy, > + enum power_supply_property psp, > + union power_supply_propval *val) > +{ > + struct rt5033_charger *charger = container_of(psy, > + struct rt5033_charger, psy); > + int ret = 0; > + > + switch (psp) { > + case POWER_SUPPLY_PROP_STATUS: > + val->intval = rt5033_get_charger_state(charger); > + break; > + case POWER_SUPPLY_PROP_CHARGE_TYPE: > + val->intval = rt5033_get_charger_type(charger); > + break; > + case POWER_SUPPLY_PROP_CURRENT_NOW: > + case POWER_SUPPLY_PROP_CURRENT_MAX: > + val->intval = rt5033_get_charger_current(charger, psp); > + break; remove the special handling of POWER_SUPPLY_PROP_CURRENT_MAX in rt5033_get_charger_current() and do it like this: case POWER_SUPPLY_PROP_CURRENT_NOW: val->intval = rt5033_get_charger_current(charger); break; case POWER_SUPPLY_PROP_CURRENT_MAX: val->intval = RT5033_CHG_MAX_CURRENT; break; > + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE: > + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX: > + val->intval = rt5033_get_charge_voltage(charger, psp); > + break; same as current handling: case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE: val->intval = rt5033_get_charge_voltage(charger); break; case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX: val->intval = RT5033_CHARGER_CONST_VOLTAGE_LIMIT_MAX; break; > + case POWER_SUPPLY_PROP_MODEL_NAME: > + val->strval = RT5033_CHARGER_MODEL; > + break; > + case POWER_SUPPLY_PROP_MANUFACTURER: > + val->strval = RT5033_MANUFACTURER; > + break; > + default: > + return -EINVAL; > + } > + > + return ret; > +} > > [...] > > +static int rt5033_charger_probe(struct platform_device *pdev) > +{ > + struct rt5033_charger *charger; > + struct rt5033_dev *rt5033 = dev_get_drvdata(pdev->dev.parent); > + int ret; > + > + charger = devm_kzalloc(&pdev->dev, sizeof(*charger), GFP_KERNEL); > + if (!charger) > + return -ENOMEM; > + > + platform_set_drvdata(pdev, charger); > + charger->dev = &pdev->dev; > + charger->rt5033 = rt5033; > + > + charger->chg = rt5033_charger_dt_init(pdev); > + if (IS_ERR_OR_NULL(charger->chg)) > + return -ENODEV; > + > + ret = rt5033_charger_reg_init(charger); > + if (ret) > + return ret; > + > + charger->psy.name = "rt5033-charger", > + charger->psy.type = POWER_SUPPLY_TYPE_MAINS, > + charger->psy.properties = rt5033_charger_props, > + charger->psy.num_properties = ARRAY_SIZE(rt5033_charger_props), > + charger->psy.get_property = rt5033_charger_get_property, > + > + ret = power_supply_register(&pdev->dev, &charger->psy); > + if (ret) { > + dev_err(&pdev->dev, "Failed to register power supply\n"); > + return ret; > + } We have devm_power_supply_register() now, which would result in complete removal of the rt5033_charger_remove() function :) > + return 0; > +} > + > +static int rt5033_charger_remove(struct platform_device *pdev) > +{ > + struct rt5033_charger *charger = platform_get_drvdata(pdev); > + > + power_supply_unregister(&charger->psy); > + > + return 0; > +} > + > +static const struct platform_device_id rt5033_charger_id[] = { > + { "rt5033-charger", }, > + { } > +}; > +MODULE_DEVICE_TABLE(platform, rt5033_charger_id); > + > +static struct platform_driver rt5033_charger_driver = { > + .driver = { > + .name = "rt5033-charger", > + }, > + .probe = rt5033_charger_probe, > + .remove = rt5033_charger_remove, > + .id_table = rt5033_charger_id, > +}; > +module_platform_driver(rt5033_charger_driver); > + > +MODULE_DESCRIPTION("Richtek RT5033 charger driver"); > +MODULE_AUTHOR("Beomho Seo <beomho.seo@xxxxxxxxxxx>"); > +MODULE_LICENSE("GPL"); This should be MODULE_LICENSE("GPL v2"); -- Sebastian
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