Hi Enric, On Fri, Apr 21, 2017 at 05:50:32PM +0200, Enric Balletbo i Serra wrote: > Allow the possibility to configure the charge and the current voltage of > the charger and also the NTC type for battery temperature measurement. > > Signed-off-by: Enric Balletbo i Serra <enric.balletbo@xxxxxxxxxxxxx> > --- > Changes since v1: > - Requested by Rob Herring > - Rename ti,charge-* to charge-* to be standard properties. > - Use unit suffixes as per bindings/property-units.txt > --- > .../bindings/power/supply/tps65217_charger.txt | 15 ++ > drivers/power/supply/tps65217_charger.c | 187 +++++++++++++++++++-- > include/linux/mfd/tps65217.h | 2 + > 3 files changed, 192 insertions(+), 12 deletions(-) > > diff --git a/Documentation/devicetree/bindings/power/supply/tps65217_charger.txt b/Documentation/devicetree/bindings/power/supply/tps65217_charger.txt > index a11072c..4415618 100644 > --- a/Documentation/devicetree/bindings/power/supply/tps65217_charger.txt > +++ b/Documentation/devicetree/bindings/power/supply/tps65217_charger.txt > @@ -6,6 +6,18 @@ Required Properties: > Should be <0> for the USB charger and <1> for the AC adapter. > -interrupt-names: Should be "USB" and "AC" > > +Optional properties: > +-charge-voltage-microvolt: set the charge voltage. The value can be: 4100000, > + 4150000, 4200000, 4250000; default: 4100000 > + > +-charge-current-microamp: set the charging current. The value can be: 300000, > + 400000, 500000, 700000; default: 500000 These two are battery specific. Please use newly introduced "simple-battery" instead. See https://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply.git/commit/?h=for-next&id=ecc931a585b3b2567da772233215f59b56fb42f9 https://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply.git/commit/?h=for-next&id=fb38342a5ae6e4f438256e98e4c29a7916195125 > +-ti,ntc-type: set the NTC type for battery temperature measurement. The value > + must be 0 or 1, where: > + 0 – 100k (curve 1, B = 3960) > + 1 – 10k (curve 2, B = 3480) (default) > + This looks fine. Might make sense to move this into its own patch. > This node is a subnode of the tps65217 PMIC. > > Example: > @@ -14,4 +26,7 @@ Example: > compatible = "ti,tps65217-charger"; > interrupts = <0>, <1>; > interrupt-names = "USB", "AC"; > + charge-voltage-microvolt = <4100000>; > + charge-current-microamp = <500000>; > + ti,ntc-type = <1>; > }; > diff --git a/drivers/power/supply/tps65217_charger.c b/drivers/power/supply/tps65217_charger.c > index 1f52340..087f29c 100644 > --- a/drivers/power/supply/tps65217_charger.c > +++ b/drivers/power/supply/tps65217_charger.c > @@ -39,6 +39,12 @@ > #define NUM_CHARGER_IRQS 2 > #define POLL_INTERVAL (HZ * 2) > > +struct tps65217_charger_platform_data { > + u32 charge_current_uamp; > + u32 charge_voltage_uvolt; > + int ntc_type; > +}; > + > struct tps65217_charger { > struct tps65217 *tps; > struct device *dev; > @@ -48,16 +54,82 @@ struct tps65217_charger { > int prev_online; > > struct task_struct *poll_task; > + struct tps65217_charger_platform_data *pdata; > }; > > static enum power_supply_property tps65217_charger_props[] = { > POWER_SUPPLY_PROP_ONLINE, > }; > > -static int tps65217_config_charger(struct tps65217_charger *charger) > +static int tps65217_set_charge_current(struct tps65217_charger *charger, > + unsigned int uamp) > +{ > + int ret, val; > + > + dev_dbg(charger->dev, "setting charge current to %d uA\n", uamp); > + > + if (uamp == 300000) > + val = 0x00; > + else if (uamp == 400000) > + val = 0x01; > + else if (uamp == 500000) > + val = 0x02; > + else if (uamp == 700000) > + val = 0x03; > + else > + return -EINVAL; > + > + ret = tps65217_set_bits(charger->tps, TPS65217_REG_CHGCONFIG3, > + TPS65217_CHGCONFIG3_ICHRG_MASK, > + val << TPS65217_CHGCONFIG3_ICHRG_SHIFT, > + TPS65217_PROTECT_NONE); > + if (ret) { > + dev_err(charger->dev, > + "failed to set ICHRG setting to 0x%02x (err: %d)\n", > + val, ret); > + return ret; > + } > + > + return 0; > +} > + > +static int tps65217_set_charge_voltage(struct tps65217_charger *charger, > + unsigned int uvolt) > +{ > + int ret, val; > + > + dev_dbg(charger->dev, "setting charge voltage to %d uV\n", uvolt); > + > + if (uvolt != 4100000 && uvolt != 4150000 && > + uvolt != 4200000 && uvolt != 4250000) > + return -EINVAL; > + > + val = (uvolt - 4100000) / 50000; > + > + ret = tps65217_set_bits(charger->tps, TPS65217_REG_CHGCONFIG2, > + TPS65217_CHGCONFIG2_VOREG_MASK, > + val << TPS65217_CHGCONFIG2_VOREG_SHIFT, > + TPS65217_PROTECT_NONE); > + if (ret) { > + dev_err(charger->dev, > + "failed to set VOCHG setting to 0x%02x (err: %d)\n", > + val, ret); > + return ret; > + } > + > + return 0; > +} > + > +static int tps65217_set_ntc_type(struct tps65217_charger *charger, > + unsigned int ntc) > { > int ret; > > + dev_dbg(charger->dev, "setting NTC type to %d\n", ntc); > + > + if (ntc != 0 && ntc != 1) > + return -EINVAL; > + > /* > * tps65217 rev. G, p. 31 (see p. 32 for NTC schematic) > * > @@ -74,14 +146,57 @@ static int tps65217_config_charger(struct tps65217_charger *charger) > * NTC TYPE (for battery temperature measurement) > * 0 – 100k (curve 1, B = 3960) > * 1 – 10k (curve 2, B = 3480) (default on reset) > - * > */ > - ret = tps65217_clear_bits(charger->tps, TPS65217_REG_CHGCONFIG1, > - TPS65217_CHGCONFIG1_NTC_TYPE, > - TPS65217_PROTECT_NONE); > + if (ntc) { > + ret = tps65217_set_bits(charger->tps, TPS65217_REG_CHGCONFIG1, > + TPS65217_CHGCONFIG1_NTC_TYPE, > + TPS65217_CHGCONFIG1_NTC_TYPE, > + TPS65217_PROTECT_NONE); > + if (ret) { > + dev_err(charger->dev, > + "failed to set NTC type to 10K: %d\n", ret); > + return ret; > + } > + } else { > + ret = tps65217_clear_bits(charger->tps, TPS65217_REG_CHGCONFIG1, > + TPS65217_CHGCONFIG1_NTC_TYPE, > + TPS65217_PROTECT_NONE); > + if (ret) { > + dev_err(charger->dev, > + "failed to set NTC type to 100K: %d\n", ret); > + return ret; > + } > + } > + > + return 0; > +} > + > +static int tps65217_config_charger(struct tps65217_charger *charger) > +{ > + int ret; > + struct tps65217_charger_platform_data *pdata = charger->pdata; > + > + if (!charger->pdata) > + return -EINVAL; > + > + ret = tps65217_set_charge_voltage(charger, pdata->charge_voltage_uvolt); > if (ret) { > dev_err(charger->dev, > - "failed to set 100k NTC setting: %d\n", ret); > + "failed to set charge voltage setting: %d\n", ret); > + return ret; > + } > + > + ret = tps65217_set_charge_current(charger, pdata->charge_current_uamp); > + if (ret) { > + dev_err(charger->dev, > + "failed to set charge current setting: %d\n", ret); > + return ret; > + } > + > + ret = tps65217_set_ntc_type(charger, pdata->ntc_type); > + if (ret) { > + dev_err(charger->dev, > + "failed to set NTC type setting: %d\n", ret); > return ret; > } > > @@ -185,6 +300,48 @@ static int tps65217_charger_poll_task(void *data) > return 0; > } > > +#ifdef CONFIG_OF > +static struct tps65217_charger_platform_data *tps65217_charger_pdata_init( > + struct platform_device *pdev) > +{ > + struct tps65217_charger_platform_data *pdata; > + struct device_node *np = pdev->dev.of_node; > + int ret; > + > + if (!np) { > + dev_err(&pdev->dev, "No charger OF node\n"); > + return ERR_PTR(-EINVAL); > + } > + > + pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); > + if (!pdata) > + return ERR_PTR(-ENOMEM); > + > + ret = of_property_read_u32(np, "charge-voltage-microvolt", > + &pdata->charge_voltage_uvolt); > + if (ret) > + pdata->charge_voltage_uvolt = 4100000; > + > + ret = of_property_read_u32(np, "charge-current-microamp", > + &pdata->charge_current_uamp); > + if (ret) > + pdata->charge_current_uamp = 500000; struct power_supply_battery_info info = {}; power_supply_get_battery_info(tps65217, &info); The simple-battery framework does not yet provide charge current/voltage, so you will need to add that first. Please Cc Liam on that patch. > + ret = of_property_read_u32(np, "ti,ntc-type", > + &pdata->ntc_type); > + if (ret) > + pdata->ntc_type = 1; /* 10k (curve 2, B = 3480) */ Please use device_property_read_u32(dev, ...) instead. > + > + return pdata; > +} > +#else /* CONFIG_OF */ > +static struct tps65217_charger_platform_data *tps65217_charger_pdata_init( > + struct platform_device *pdev) > +{ > + return NULL; > +} > +#endif /* CONFIG_OF */ > + > static const struct power_supply_desc tps65217_charger_desc = { > .name = "tps65217-charger", > .type = POWER_SUPPLY_TYPE_MAINS, > @@ -214,6 +371,18 @@ static int tps65217_charger_probe(struct platform_device *pdev) > cfg.of_node = pdev->dev.of_node; > cfg.drv_data = charger; > > + charger->pdata = tps65217_charger_pdata_init(pdev); > + if (IS_ERR(charger->pdata)) { > + dev_err(charger->dev, "failed: getting platform data\n"); > + return PTR_ERR(charger->pdata); > + } > + > + ret = tps65217_config_charger(charger); > + if (ret < 0) { > + dev_err(charger->dev, "charger config failed, err %d\n", ret); > + return ret; > + } > + > charger->psy = devm_power_supply_register(&pdev->dev, > &tps65217_charger_desc, > &cfg); > @@ -225,12 +394,6 @@ static int tps65217_charger_probe(struct platform_device *pdev) > irq[0] = platform_get_irq_byname(pdev, "USB"); > irq[1] = platform_get_irq_byname(pdev, "AC"); > > - ret = tps65217_config_charger(charger); > - if (ret < 0) { > - dev_err(charger->dev, "charger config failed, err %d\n", ret); > - return ret; > - } > - > /* Create a polling thread if an interrupt is invalid */ > if (irq[0] < 0 || irq[1] < 0) { > poll_task = kthread_run(tps65217_charger_poll_task, > diff --git a/include/linux/mfd/tps65217.h b/include/linux/mfd/tps65217.h > index eac2857..d040062 100644 > --- a/include/linux/mfd/tps65217.h > +++ b/include/linux/mfd/tps65217.h > @@ -103,8 +103,10 @@ > #define TPS65217_CHGCONFIG2_DYNTMR BIT(7) > #define TPS65217_CHGCONFIG2_VPREGHG BIT(6) > #define TPS65217_CHGCONFIG2_VOREG_MASK 0x30 > +#define TPS65217_CHGCONFIG2_VOREG_SHIFT 4 > > #define TPS65217_CHGCONFIG3_ICHRG_MASK 0xC0 > +#define TPS65217_CHGCONFIG3_ICHRG_SHIFT 6 > #define TPS65217_CHGCONFIG3_DPPMTH_MASK 0x30 > #define TPS65217_CHGCONFIG2_PCHRGT BIT(3) > #define TPS65217_CHGCONFIG2_TERMIF 0x06 -- Sebastian
Attachment:
signature.asc
Description: PGP signature
