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-rw-r--r--Documentation/devicetree/bindings/power/reset/qcom,pon.yaml50
-rw-r--r--Documentation/devicetree/bindings/power/supply/mediatek,mt6370-charger.yaml96
-rw-r--r--drivers/power/reset/qcom-pon.c1
-rw-r--r--drivers/power/supply/Kconfig15
-rw-r--r--drivers/power/supply/Makefile1
-rw-r--r--drivers/power/supply/ab8500_chargalg.c8
-rw-r--r--drivers/power/supply/adp5061.c9
-rw-r--r--drivers/power/supply/bq25890_charger.c30
-rw-r--r--drivers/power/supply/bq27xxx_battery.c60
-rw-r--r--drivers/power/supply/cpcap-charger.c2
-rw-r--r--drivers/power/supply/cw2015_battery.c13
-rw-r--r--drivers/power/supply/max1721x_battery.c2
-rw-r--r--drivers/power/supply/mt6370-charger.c961
-rw-r--r--drivers/power/supply/power_supply_sysfs.c2
-rw-r--r--drivers/power/supply/tps65217_charger.c2
-rw-r--r--include/linux/linear_range.h11
-rw-r--r--include/linux/power_supply.h48
17 files changed, 1246 insertions, 65 deletions
diff --git a/Documentation/devicetree/bindings/power/reset/qcom,pon.yaml b/Documentation/devicetree/bindings/power/reset/qcom,pon.yaml
index e7b436d2e757..d96170eecbd2 100644
--- a/Documentation/devicetree/bindings/power/reset/qcom,pon.yaml
+++ b/Documentation/devicetree/bindings/power/reset/qcom,pon.yaml
@@ -15,18 +15,27 @@ description: |
This DT node has pwrkey and resin as sub nodes.
-allOf:
- - $ref: reboot-mode.yaml#
-
properties:
compatible:
enum:
- qcom,pm8916-pon
- qcom,pms405-pon
- qcom,pm8998-pon
+ - qcom,pmk8350-pon
reg:
- maxItems: 1
+ description: |
+ Specifies the SPMI base address for the PON (power-on) peripheral. For
+ PMICs that have the PON peripheral (GEN3) split into PON_HLOS and PON_PBS
+ (e.g. PMK8350), this can hold addresses of both PON_HLOS and PON_PBS
+ peripherals. In that case, the PON_PBS address needs to be specified to
+ facilitate software debouncing on some PMIC.
+ minItems: 1
+ maxItems: 2
+
+ reg-names:
+ minItems: 1
+ maxItems: 2
pwrkey:
type: object
@@ -46,6 +55,39 @@ required:
unevaluatedProperties: false
+allOf:
+ - $ref: reboot-mode.yaml#
+ - if:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - qcom,pm8916-pon
+ - qcom,pms405-pon
+ - qcom,pm8998-pon
+ then:
+ properties:
+ reg:
+ maxItems: 1
+ reg-names:
+ items:
+ - const: pon
+ - if:
+ properties:
+ compatible:
+ contains:
+ const: qcom,pmk8350-pon
+ then:
+ properties:
+ reg:
+ minItems: 1
+ maxItems: 2
+ reg-names:
+ minItems: 1
+ items:
+ - const: hlos
+ - const: pbs
+
examples:
- |
#include <dt-bindings/interrupt-controller/irq.h>
diff --git a/Documentation/devicetree/bindings/power/supply/mediatek,mt6370-charger.yaml b/Documentation/devicetree/bindings/power/supply/mediatek,mt6370-charger.yaml
new file mode 100644
index 000000000000..fd491c598a00
--- /dev/null
+++ b/Documentation/devicetree/bindings/power/supply/mediatek,mt6370-charger.yaml
@@ -0,0 +1,96 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/power/supply/mediatek,mt6370-charger.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: MediaTek MT6370 Battery Charger
+
+maintainers:
+ - ChiaEn Wu <chiaen_wu@richtek.com>
+
+description: |
+ This module is part of the MT6370 MFD device.
+ Provides Battery Charger, Boost for OTG devices and BC1.2 detection.
+
+properties:
+ compatible:
+ const: mediatek,mt6370-charger
+
+ interrupts:
+ description: |
+ Specify what irqs are needed to be handled by MT6370 Charger driver.
+ We need to use the IRQ "MT6370_IRQ_OVPCTRL_UVP_D" to know when USB
+ is plugged in, and then the driver will enable BC1.2 detection.
+ After the hardware of MT6370 completes the BC1.2 detection,
+ IRQ "MT6370_IRQ_ATTACH" will be triggered, and the driver will know
+ the result of BC1.2 detection.
+ When the IRQ "MT6370_IRQ_CHG_MIVR" is triggered, it means that the
+ hardware enters the "Minimum Input Voltage Regulation loop" and
+ a workaround needs to be applied at this time.
+ In summary, "MT6370_IRQ_OVPCTRL_UVP_D", "MT6370_IRQ_ATTACH" and
+ "MT6370_IRQ_CHG_MIVR" are required in this charger driver.
+ items:
+ - description: irq of "USB is plugged in"
+ - description: irq of "BC1.2 is done"
+ - description: irq of "Minimum Input Voltage Regulation loop is active"
+
+ interrupt-names:
+ items:
+ - const: uvp_d_evt
+ - const: attach_i
+ - const: mivr
+
+ io-channels:
+ description: |
+ Use ADC channel to read VBUS, IBUS, IBAT, etc., info.
+ minItems: 1
+ items:
+ - description: |
+ VBUS voltage with lower accuracy (+-75mV) but higher measure
+ range (1~22V)
+ - description: |
+ VBUS voltage with higher accuracy (+-30mV) but lower measure
+ range (1~9.76V)
+ - description: the main system input voltage
+ - description: battery voltage
+ - description: battery temperature-sense input voltage
+ - description: IBUS current (required)
+ - description: battery current
+ - description: |
+ regulated output voltage to supply for the PWM low-side gate driver
+ and the bootstrap capacitor
+ - description: IC junction temperature
+
+ io-channel-names:
+ minItems: 1
+ items:
+ - const: vbusdiv5
+ - const: vbusdiv2
+ - const: vsys
+ - const: vbat
+ - const: ts_bat
+ - const: ibus
+ - const: ibat
+ - const: chg_vddp
+ - const: temp_jc
+
+ usb-otg-vbus-regulator:
+ type: object
+ description: OTG boost regulator.
+ unevaluatedProperties: false
+ $ref: /schemas/regulator/regulator.yaml#
+
+ properties:
+ enable-gpios:
+ maxItems: 1
+
+required:
+ - compatible
+ - interrupts
+ - interrupt-names
+ - io-channels
+
+additionalProperties: false
+
+...
diff --git a/drivers/power/reset/qcom-pon.c b/drivers/power/reset/qcom-pon.c
index 4a688741a88a..16bc01738be9 100644
--- a/drivers/power/reset/qcom-pon.c
+++ b/drivers/power/reset/qcom-pon.c
@@ -82,6 +82,7 @@ static const struct of_device_id pm8916_pon_id_table[] = {
{ .compatible = "qcom,pm8916-pon", .data = (void *)GEN1_REASON_SHIFT },
{ .compatible = "qcom,pms405-pon", .data = (void *)GEN1_REASON_SHIFT },
{ .compatible = "qcom,pm8998-pon", .data = (void *)GEN2_REASON_SHIFT },
+ { .compatible = "qcom,pmk8350-pon", .data = (void *)GEN2_REASON_SHIFT },
{ }
};
MODULE_DEVICE_TABLE(of, pm8916_pon_id_table);
diff --git a/drivers/power/supply/Kconfig b/drivers/power/supply/Kconfig
index 56e70a68679a..0bbfe6a7ce4d 100644
--- a/drivers/power/supply/Kconfig
+++ b/drivers/power/supply/Kconfig
@@ -619,6 +619,21 @@ config CHARGER_MT6360
Average Input Current Regulation, Battery Temperature Sensing,
Over-Temperature Protection, DPDM Detection for BC1.2.
+config CHARGER_MT6370
+ tristate "MediaTek MT6370 Charger Driver"
+ depends on MFD_MT6370
+ depends on REGULATOR
+ depends on IIO
+ select LINEAR_RANGES
+ help
+ Say Y here to enable MT6370 Charger Part.
+ The device supports High-Accuracy Voltage/Current Regulation,
+ Average Input Current Regulation, Battery Temperature Sensing,
+ Over-Temperature Protection, DPDM Detection for BC1.2.
+
+ This driver can also be built as a module. If so, the module
+ will be called "mt6370-charger".
+
config CHARGER_QCOM_SMBB
tristate "Qualcomm Switch-Mode Battery Charger and Boost"
depends on MFD_SPMI_PMIC || COMPILE_TEST
diff --git a/drivers/power/supply/Makefile b/drivers/power/supply/Makefile
index 3040a1de81b8..0ee8653e882e 100644
--- a/drivers/power/supply/Makefile
+++ b/drivers/power/supply/Makefile
@@ -82,6 +82,7 @@ obj-$(CONFIG_CHARGER_MAX8997) += max8997_charger.o
obj-$(CONFIG_CHARGER_MAX8998) += max8998_charger.o
obj-$(CONFIG_CHARGER_MP2629) += mp2629_charger.o
obj-$(CONFIG_CHARGER_MT6360) += mt6360_charger.o
+obj-$(CONFIG_CHARGER_MT6370) += mt6370-charger.o
obj-$(CONFIG_CHARGER_QCOM_SMBB) += qcom_smbb.o
obj-$(CONFIG_CHARGER_BQ2415X) += bq2415x_charger.o
obj-$(CONFIG_CHARGER_BQ24190) += bq24190_charger.o
diff --git a/drivers/power/supply/ab8500_chargalg.c b/drivers/power/supply/ab8500_chargalg.c
index ae4be553f424..ea4ad61d4c7e 100644
--- a/drivers/power/supply/ab8500_chargalg.c
+++ b/drivers/power/supply/ab8500_chargalg.c
@@ -252,12 +252,6 @@ static enum power_supply_property ab8500_chargalg_props[] = {
POWER_SUPPLY_PROP_HEALTH,
};
-struct ab8500_chargalg_sysfs_entry {
- struct attribute attr;
- ssize_t (*show)(struct ab8500_chargalg *di, char *buf);
- ssize_t (*store)(struct ab8500_chargalg *di, const char *buf, size_t length);
-};
-
/**
* ab8500_chargalg_safety_timer_expired() - Expiration of the safety timer
* @timer: pointer to the hrtimer structure
@@ -490,8 +484,6 @@ static int ab8500_chargalg_kick_watchdog(struct ab8500_chargalg *di)
static int ab8500_chargalg_ac_en(struct ab8500_chargalg *di, int enable,
int vset_uv, int iset_ua)
{
- static int ab8500_chargalg_ex_ac_enable_toggle;
-
if (!di->ac_chg || !di->ac_chg->ops.enable)
return -ENXIO;
diff --git a/drivers/power/supply/adp5061.c b/drivers/power/supply/adp5061.c
index 003557043ab3..fcf8ff0bc974 100644
--- a/drivers/power/supply/adp5061.c
+++ b/drivers/power/supply/adp5061.c
@@ -427,11 +427,11 @@ static int adp5061_get_chg_type(struct adp5061_state *st,
if (ret < 0)
return ret;
- chg_type = adp5061_chg_type[ADP5061_CHG_STATUS_1_CHG_STATUS(status1)];
- if (chg_type > ADP5061_CHG_FAST_CV)
+ chg_type = ADP5061_CHG_STATUS_1_CHG_STATUS(status1);
+ if (chg_type >= ARRAY_SIZE(adp5061_chg_type))
val->intval = POWER_SUPPLY_STATUS_UNKNOWN;
else
- val->intval = chg_type;
+ val->intval = adp5061_chg_type[chg_type];
return ret;
}
@@ -493,6 +493,9 @@ static int adp5061_get_battery_status(struct adp5061_state *st,
case 0x4: /* VBAT_SNS > VWEAK */
val->intval = POWER_SUPPLY_CAPACITY_LEVEL_NORMAL;
break;
+ default:
+ val->intval = POWER_SUPPLY_CAPACITY_LEVEL_UNKNOWN;
+ break;
}
return ret;
diff --git a/drivers/power/supply/bq25890_charger.c b/drivers/power/supply/bq25890_charger.c
index 06ea7399d151..6020b58c641d 100644
--- a/drivers/power/supply/bq25890_charger.c
+++ b/drivers/power/supply/bq25890_charger.c
@@ -613,6 +613,33 @@ static int bq25890_power_supply_get_property(struct power_supply *psy,
return 0;
}
+static int bq25890_power_supply_set_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ const union power_supply_propval *val)
+{
+ struct bq25890_device *bq = power_supply_get_drvdata(psy);
+ u8 lval;
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT:
+ lval = bq25890_find_idx(val->intval, TBL_IINLIM);
+ return bq25890_field_write(bq, F_IINLIM, lval);
+ default:
+ return -EINVAL;
+ }
+}
+
+static int bq25890_power_supply_property_is_writeable(struct power_supply *psy,
+ enum power_supply_property psp)
+{
+ switch (psp) {
+ case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT:
+ return true;
+ default:
+ return false;
+ }
+}
+
/* On the BQ25892 try to get charger-type info from our supplier */
static void bq25890_charger_external_power_changed(struct power_supply *psy)
{
@@ -874,6 +901,8 @@ static const struct power_supply_desc bq25890_power_supply_desc = {
.properties = bq25890_power_supply_props,
.num_properties = ARRAY_SIZE(bq25890_power_supply_props),
.get_property = bq25890_power_supply_get_property,
+ .set_property = bq25890_power_supply_set_property,
+ .property_is_writeable = bq25890_power_supply_property_is_writeable,
.external_power_changed = bq25890_charger_external_power_changed,
};
@@ -946,6 +975,7 @@ static void bq25890_pump_express_work(struct work_struct *data)
return;
error_print:
+ bq25890_field_write(bq, F_PUMPX_EN, 0);
dev_err(bq->dev, "Failed to request hi-voltage charging\n");
}
diff --git a/drivers/power/supply/bq27xxx_battery.c b/drivers/power/supply/bq27xxx_battery.c
index 35e6a394c0df..8bf048fbd36a 100644
--- a/drivers/power/supply/bq27xxx_battery.c
+++ b/drivers/power/supply/bq27xxx_battery.c
@@ -868,11 +868,11 @@ enum bq27xxx_dm_reg_id {
BQ27XXX_DM_TERMINATE_VOLTAGE,
};
-#define bq27000_dm_regs 0
-#define bq27010_dm_regs 0
-#define bq2750x_dm_regs 0
-#define bq2751x_dm_regs 0
-#define bq2752x_dm_regs 0
+#define bq27000_dm_regs NULL
+#define bq27010_dm_regs NULL
+#define bq2750x_dm_regs NULL
+#define bq2751x_dm_regs NULL
+#define bq2752x_dm_regs NULL
#if 0 /* not yet tested */
static struct bq27xxx_dm_reg bq27500_dm_regs[] = {
@@ -881,24 +881,24 @@ static struct bq27xxx_dm_reg bq27500_dm_regs[] = {
[BQ27XXX_DM_TERMINATE_VOLTAGE] = { 80, 48, 2, 1000, 32767 },
};
#else
-#define bq27500_dm_regs 0
+#define bq27500_dm_regs NULL
#endif
/* todo create data memory definitions from datasheets and test on chips */
-#define bq27510g1_dm_regs 0
-#define bq27510g2_dm_regs 0
-#define bq27510g3_dm_regs 0
-#define bq27520g1_dm_regs 0
-#define bq27520g2_dm_regs 0
-#define bq27520g3_dm_regs 0
-#define bq27520g4_dm_regs 0
-#define bq27521_dm_regs 0
-#define bq27530_dm_regs 0
-#define bq27531_dm_regs 0
-#define bq27541_dm_regs 0
-#define bq27542_dm_regs 0
-#define bq27546_dm_regs 0
-#define bq27742_dm_regs 0
+#define bq27510g1_dm_regs NULL
+#define bq27510g2_dm_regs NULL
+#define bq27510g3_dm_regs NULL
+#define bq27520g1_dm_regs NULL
+#define bq27520g2_dm_regs NULL
+#define bq27520g3_dm_regs NULL
+#define bq27520g4_dm_regs NULL
+#define bq27521_dm_regs NULL
+#define bq27530_dm_regs NULL
+#define bq27531_dm_regs NULL
+#define bq27541_dm_regs NULL
+#define bq27542_dm_regs NULL
+#define bq27546_dm_regs NULL
+#define bq27742_dm_regs NULL
#if 0 /* not yet tested */
static struct bq27xxx_dm_reg bq27545_dm_regs[] = {
@@ -907,7 +907,7 @@ static struct bq27xxx_dm_reg bq27545_dm_regs[] = {
[BQ27XXX_DM_TERMINATE_VOLTAGE] = { 80, 67, 2, 2800, 3700 },
};
#else
-#define bq27545_dm_regs 0
+#define bq27545_dm_regs NULL
#endif
static struct bq27xxx_dm_reg bq27411_dm_regs[] = {
@@ -937,7 +937,7 @@ static struct bq27xxx_dm_reg bq27426_dm_regs[] = {
#if 0 /* not yet tested */
#define bq27441_dm_regs bq27421_dm_regs
#else
-#define bq27441_dm_regs 0
+#define bq27441_dm_regs NULL
#endif
#if 0 /* not yet tested */
@@ -947,13 +947,13 @@ static struct bq27xxx_dm_reg bq27621_dm_regs[] = {
[BQ27XXX_DM_TERMINATE_VOLTAGE] = { 82, 9, 2, 2500, 3700 },
};
#else
-#define bq27621_dm_regs 0
+#define bq27621_dm_regs NULL
#endif
-#define bq27z561_dm_regs 0
-#define bq28z610_dm_regs 0
-#define bq34z100_dm_regs 0
-#define bq78z100_dm_regs 0
+#define bq27z561_dm_regs NULL
+#define bq28z610_dm_regs NULL
+#define bq34z100_dm_regs NULL
+#define bq78z100_dm_regs NULL
#define BQ27XXX_O_ZERO BIT(0)
#define BQ27XXX_O_OTDC BIT(1) /* has OTC/OTD overtemperature flags */
@@ -1044,12 +1044,12 @@ struct bq27xxx_dm_buf {
.block = (di)->dm_regs[i].offset / BQ27XXX_DM_SZ, \
}
-static inline u16 *bq27xxx_dm_reg_ptr(struct bq27xxx_dm_buf *buf,
+static inline __be16 *bq27xxx_dm_reg_ptr(struct bq27xxx_dm_buf *buf,
struct bq27xxx_dm_reg *reg)
{
if (buf->class == reg->subclass_id &&
buf->block == reg->offset / BQ27XXX_DM_SZ)
- return (u16 *) (buf->data + reg->offset % BQ27XXX_DM_SZ);
+ return (__be16 *) (buf->data + reg->offset % BQ27XXX_DM_SZ);
return NULL;
}
@@ -1275,7 +1275,7 @@ static void bq27xxx_battery_update_dm_block(struct bq27xxx_device_info *di,
{
struct bq27xxx_dm_reg *reg = &di->dm_regs[reg_id];
const char *str = bq27xxx_dm_reg_name[reg_id];
- u16 *prev = bq27xxx_dm_reg_ptr(buf, reg);
+ __be16 *prev = bq27xxx_dm_reg_ptr(buf, reg);
if (prev == NULL) {
dev_warn(di->dev, "buffer does not match %s dm spec\n", str);
diff --git a/drivers/power/supply/cpcap-charger.c b/drivers/power/supply/cpcap-charger.c
index 60e0ce105a29..be9764541d52 100644
--- a/drivers/power/supply/cpcap-charger.c
+++ b/drivers/power/supply/cpcap-charger.c
@@ -5,7 +5,7 @@
* Copyright (C) 2017 Tony Lindgren <tony@atomide.com>
*
* Rewritten for Linux power framework with some parts based on
- * on earlier driver found in the Motorola Linux kernel:
+ * earlier driver found in the Motorola Linux kernel:
*
* Copyright (C) 2009-2010 Motorola, Inc.
*/
diff --git a/drivers/power/supply/cw2015_battery.c b/drivers/power/supply/cw2015_battery.c
index 81e17ad80163..6d52641151d9 100644
--- a/drivers/power/supply/cw2015_battery.c
+++ b/drivers/power/supply/cw2015_battery.c
@@ -21,6 +21,7 @@
#include <linux/regmap.h>
#include <linux/time.h>
#include <linux/workqueue.h>
+#include <linux/devm-helpers.h>
#define CW2015_SIZE_BATINFO 64
@@ -698,7 +699,8 @@ static int cw_bat_probe(struct i2c_client *client)
}
cw_bat->battery_workqueue = create_singlethread_workqueue("rk_battery");
- INIT_DELAYED_WORK(&cw_bat->battery_delay_work, cw_bat_work);
+ devm_delayed_work_autocancel(&client->dev,
+ &cw_bat->battery_delay_work, cw_bat_work);
queue_delayed_work(cw_bat->battery_workqueue,
&cw_bat->battery_delay_work, msecs_to_jiffies(10));
return 0;
@@ -725,14 +727,6 @@ static int __maybe_unused cw_bat_resume(struct device *dev)
static SIMPLE_DEV_PM_OPS(cw_bat_pm_ops, cw_bat_suspend, cw_bat_resume);
-static void cw_bat_remove(struct i2c_client *client)
-{
- struct cw_battery *cw_bat = i2c_get_clientdata(client);
-
- cancel_delayed_work_sync(&cw_bat->battery_delay_work);
- power_supply_put_battery_info(cw_bat->rk_bat, cw_bat->battery);
-}
-
static const struct i2c_device_id cw_bat_id_table[] = {
{ "cw2015", 0 },
{ }
@@ -751,7 +745,6 @@ static struct i2c_driver cw_bat_driver = {
.pm = &cw_bat_pm_ops,
},
.probe_new = cw_bat_probe,
- .remove = cw_bat_remove,
.id_table = cw_bat_id_table,
};
diff --git a/drivers/power/supply/max1721x_battery.c b/drivers/power/supply/max1721x_battery.c
index 473e53cd2801..d8d52e09da7b 100644
--- a/drivers/power/supply/max1721x_battery.c
+++ b/drivers/power/supply/max1721x_battery.c
@@ -444,5 +444,5 @@ module_w1_family(w1_max1721x_family);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Alex A. Mihaylov <minimumlaw@rambler.ru>");
-MODULE_DESCRIPTION("Maxim MAX17211/MAX17215 Fuel Gauage IC driver");
+MODULE_DESCRIPTION("Maxim MAX17211/MAX17215 Fuel Gauge IC driver");
MODULE_ALIAS("w1-family-" __stringify(W1_MAX1721X_FAMILY_ID));
diff --git a/drivers/power/supply/mt6370-charger.c b/drivers/power/supply/mt6370-charger.c
new file mode 100644
index 000000000000..f27dae5043f5
--- /dev/null
+++ b/drivers/power/supply/mt6370-charger.c
@@ -0,0 +1,961 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2022 Richtek Technology Corp.
+ *
+ * Author: ChiaEn Wu <chiaen_wu@richtek.com>
+ */
+
+#include <linux/bitfield.h>
+#include <linux/bits.h>
+#include <linux/devm-helpers.h>
+#include <linux/gpio/consumer.h>
+#include <linux/iio/consumer.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <linux/linear_range.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/power_supply.h>
+#include <linux/regmap.h>
+#include <linux/regulator/driver.h>
+#include <linux/workqueue.h>
+
+#define MT6370_REG_CHG_CTRL1 0x111
+#define MT6370_REG_CHG_CTRL2 0x112
+#define MT6370_REG_CHG_CTRL3 0x113
+#define MT6370_REG_CHG_CTRL4 0x114
+#define MT6370_REG_CHG_CTRL5 0x115
+#define MT6370_REG_CHG_CTRL6 0x116
+#define MT6370_REG_CHG_CTRL7 0x117
+#define MT6370_REG_CHG_CTRL8 0x118
+#define MT6370_REG_CHG_CTRL9 0x119
+#define MT6370_REG_CHG_CTRL10 0x11A
+#define MT6370_REG_DEVICE_TYPE 0x122
+#define MT6370_REG_USB_STATUS1 0x127
+#define MT6370_REG_CHG_STAT 0x14A
+#define MT6370_REG_FLED_EN 0x17E
+#define MT6370_REG_CHG_STAT1 0X1D0
+#define MT6370_REG_OVPCTRL_STAT 0x1D8
+
+#define MT6370_VOBST_MASK GENMASK(7, 2)
+#define MT6370_OTG_PIN_EN_MASK BIT(1)
+#define MT6370_OPA_MODE_MASK BIT(0)
+#define MT6370_OTG_OC_MASK GENMASK(2, 0)
+
+#define MT6370_MIVR_IBUS_TH_100_mA 100000
+#define MT6370_ADC_CHAN_IBUS 5
+#define MT6370_ADC_CHAN_MAX 9
+
+enum mt6370_chg_reg_field {
+ /* MT6370_REG_CHG_CTRL2 */
+ F_IINLMTSEL, F_CFO_EN, F_CHG_EN,
+ /* MT6370_REG_CHG_CTRL3 */
+ F_IAICR, F_AICR_EN, F_ILIM_EN,
+ /* MT6370_REG_CHG_CTRL4 */
+ F_VOREG,
+ /* MT6370_REG_CHG_CTRL6 */
+ F_VMIVR,
+ /* MT6370_REG_CHG_CTRL7 */
+ F_ICHG,
+ /* MT6370_REG_CHG_CTRL8 */
+ F_IPREC,
+ /* MT6370_REG_CHG_CTRL9 */
+ F_IEOC,
+ /* MT6370_REG_DEVICE_TYPE */
+ F_USBCHGEN,
+ /* MT6370_REG_USB_STATUS1 */
+ F_USB_STAT, F_CHGDET,
+ /* MT6370_REG_CHG_STAT */
+ F_CHG_STAT, F_BOOST_STAT, F_VBAT_LVL,
+ /* MT6370_REG_FLED_EN */
+ F_FL_STROBE,
+ /* MT6370_REG_CHG_STAT1 */
+ F_CHG_MIVR_STAT,
+ /* MT6370_REG_OVPCTRL_STAT */
+ F_UVP_D_STAT,
+ F_MAX
+};
+
+enum mt6370_irq {
+ MT6370_IRQ_ATTACH_I = 0,
+ MT6370_IRQ_UVP_D_EVT,
+ MT6370_IRQ_MIVR,
+ MT6370_IRQ_MAX
+};
+
+struct mt6370_priv {
+ struct device *dev;
+ struct iio_channel *iio_adcs;
+ struct mutex attach_lock;
+ struct power_supply *psy;
+ struct regmap *regmap;
+ struct regmap_field *rmap_fields[F_MAX];
+ struct regulator_dev *rdev;
+ struct workqueue_struct *wq;
+ struct work_struct bc12_work;
+ struct delayed_work mivr_dwork;
+ unsigned int irq_nums[MT6370_IRQ_MAX];
+ int attach;
+ int psy_usb_type;
+ bool pwr_rdy;
+};
+
+enum mt6370_usb_status {
+ MT6370_USB_STAT_NO_VBUS = 0,
+ MT6370_USB_STAT_VBUS_FLOW_IS_UNDER_GOING,
+ MT6370_USB_STAT_SDP,
+ MT6370_USB_STAT_SDP_NSTD,
+ MT6370_USB_STAT_DCP,
+ MT6370_USB_STAT_CDP,
+ MT6370_USB_STAT_MAX
+};
+
+struct mt6370_chg_field {
+ const char *name;
+ const struct linear_range *range;
+ struct reg_field field;
+};
+
+enum {
+ MT6370_RANGE_F_IAICR = 0,
+ MT6370_RANGE_F_VOREG,
+ MT6370_RANGE_F_VMIVR,
+ MT6370_RANGE_F_ICHG,
+ MT6370_RANGE_F_IPREC,
+ MT6370_RANGE_F_IEOC,
+ MT6370_RANGE_F_MAX
+};
+
+static const struct linear_range mt6370_chg_ranges[MT6370_RANGE_F_MAX] = {
+ LINEAR_RANGE_IDX(MT6370_RANGE_F_IAICR, 100000, 0x0, 0x3F, 50000),
+ LINEAR_RANGE_IDX(MT6370_RANGE_F_VOREG, 3900000, 0x0, 0x51, 10000),
+ LINEAR_RANGE_IDX(MT6370_RANGE_F_VMIVR, 3900000, 0x0, 0x5F, 100000),
+ LINEAR_RANGE_IDX(MT6370_RANGE_F_ICHG, 900000, 0x08, 0x31, 100000),
+ LINEAR_RANGE_IDX(MT6370_RANGE_F_IPREC, 100000, 0x0, 0x0F, 50000),
+ LINEAR_RANGE_IDX(MT6370_RANGE_F_IEOC, 100000, 0x0, 0x0F, 50000),
+};
+
+#define MT6370_CHG_FIELD(_fd, _reg, _lsb, _msb) \
+[_fd] = { \
+ .name = #_fd, \
+ .range = NULL, \
+ .field = REG_FIELD(_reg, _lsb, _msb), \
+}
+
+#define MT6370_CHG_FIELD_RANGE(_fd, _reg, _lsb, _msb) \
+[_fd] = { \
+ .name = #_fd, \
+ .range = &mt6370_chg_ranges[MT6370_RANGE_##_fd], \
+ .field = REG_FIELD(_reg, _lsb, _msb), \
+}
+
+static const struct mt6370_chg_field mt6370_chg_fields[F_MAX] = {
+ MT6370_CHG_FIELD(F_IINLMTSEL, MT6370_REG_CHG_CTRL2, 2, 3),
+ MT6370_CHG_FIELD(F_CFO_EN, MT6370_REG_CHG_CTRL2, 1, 1),
+ MT6370_CHG_FIELD(F_CHG_EN, MT6370_REG_CHG_CTRL2, 0, 0),
+ MT6370_CHG_FIELD_RANGE(F_IAICR, MT6370_REG_CHG_CTRL3, 2, 7),
+ MT6370_CHG_FIELD(F_AICR_EN, MT6370_REG_CHG_CTRL3, 1, 1),
+ MT6370_CHG_FIELD(F_ILIM_EN, MT6370_REG_CHG_CTRL3, 0, 0),
+ MT6370_CHG_FIELD_RANGE(F_VOREG, MT6370_REG_CHG_CTRL4, 1, 7),
+ MT6370_CHG_FIELD_RANGE(F_VMIVR, MT6370_REG_CHG_CTRL6, 1, 7),
+ MT6370_CHG_FIELD_RANGE(F_ICHG, MT6370_REG_CHG_CTRL7, 2, 7),
+ MT6370_CHG_FIELD_RANGE(F_IPREC, MT6370_REG_CHG_CTRL8, 0, 3),
+ MT6370_CHG_FIELD_RANGE(F_IEOC, MT6370_REG_CHG_CTRL9, 4, 7),
+ MT6370_CHG_FIELD(F_USBCHGEN, MT6370_REG_DEVICE_TYPE, 7, 7),
+ MT6370_CHG_FIELD(F_USB_STAT, MT6370_REG_USB_STATUS1, 4, 6),
+ MT6370_CHG_FIELD(F_CHGDET, MT6370_REG_USB_STATUS1, 3, 3),
+ MT6370_CHG_FIELD(F_CHG_STAT, MT6370_REG_CHG_STAT, 6, 7),
+ MT6370_CHG_FIELD(F_BOOST_STAT, MT6370_REG_CHG_STAT, 3, 3),
+ MT6370_CHG_FIELD(F_VBAT_LVL, MT6370_REG_CHG_STAT, 5, 5),
+ MT6370_CHG_FIELD(F_FL_STROBE, MT6370_REG_FLED_EN, 2, 2),
+ MT6370_CHG_FIELD(F_CHG_MIVR_STAT, MT6370_REG_CHG_STAT1, 6, 6),
+ MT6370_CHG_FIELD(F_UVP_D_STAT, MT6370_REG_OVPCTRL_STAT, 4, 4),
+};
+
+static inline int mt6370_chg_field_get(struct mt6370_priv *priv,
+ enum mt6370_chg_reg_field fd,
+ unsigned int *val)
+{
+ int ret;
+ unsigned int reg_val;
+
+ ret = regmap_field_read(priv->rmap_fields[fd], &reg_val);
+ if (ret)
+ return ret;
+
+ if (mt6370_chg_fields[fd].range)
+ return linear_range_get_value(mt6370_chg_fields[fd].range,
+ reg_val, val);
+
+ *val = reg_val;
+ return 0;
+}
+
+static inline int mt6370_chg_field_set(struct mt6370_priv *priv,
+ enum mt6370_chg_reg_field fd,
+ unsigned int val)
+{
+ int ret;
+ bool f;
+ const struct linear_range *r;
+
+ if (mt6370_chg_fields[fd].range) {
+ r = mt6370_chg_fields[fd].range;
+
+ if (fd == F_VMIVR) {
+ ret = linear_range_get_selector_high(r, val, &val, &f);
+ if (ret)
+ val = r->max_sel;
+ } else {
+ linear_range_get_selector_within(r, val, &val);
+ }
+ }
+
+ return regmap_field_write(priv->rmap_fields[fd], val);
+}
+
+enum {
+ MT6370_CHG_STAT_READY = 0,
+ MT6370_CHG_STAT_CHARGE_IN_PROGRESS,
+ MT6370_CHG_STAT_DONE,
+ MT6370_CHG_STAT_FAULT,
+ MT6370_CHG_STAT_MAX
+};
+
+enum {
+ MT6370_ATTACH_STAT_DETACH = 0,
+ MT6370_ATTACH_STAT_ATTACH_WAIT_FOR_BC12,
+ MT6370_ATTACH_STAT_ATTACH_BC12_DONE,
+ MT6370_ATTACH_STAT_ATTACH_MAX
+};
+
+static int mt6370_chg_otg_of_parse_cb(struct device_node *of,
+ const struct regulator_desc *rdesc,
+ struct regulator_config *rcfg)
+{
+ struct mt6370_priv *priv = rcfg->driver_data;
+
+ rcfg->ena_gpiod = fwnode_gpiod_get_index(of_fwnode_handle(of),
+ "enable", 0, GPIOD_OUT_LOW |
+ GPIOD_FLAGS_BIT_NONEXCLUSIVE,
+ rdesc->name);
+ if (IS_ERR(rcfg->ena_gpiod)) {
+ rcfg->ena_gpiod = NULL;
+ return 0;
+ }
+
+ return regmap_update_bits(priv->regmap, MT6370_REG_CHG_CTRL1,
+ MT6370_OTG_PIN_EN_MASK,
+ MT6370_OTG_PIN_EN_MASK);
+}
+
+static void mt6370_chg_bc12_work_func(struct work_struct *work)
+{
+ struct mt6370_priv *priv = container_of(work, struct mt6370_priv,
+ bc12_work);
+ int ret;
+ bool rpt_psy = false;
+ unsigned int attach, usb_stat;
+
+ mutex_lock(&priv->attach_lock);
+ attach = priv->attach;
+
+ switch (attach) {
+ case MT6370_ATTACH_STAT_DETACH:
+ usb_stat = 0;
+ break;
+ case MT6370_ATTACH_STAT_ATTACH_WAIT_FOR_BC12:
+ ret = mt6370_chg_field_set(priv, F_USBCHGEN, attach);
+ if (ret)
+ dev_err(priv->dev, "Failed to enable USB CHG EN\n");
+ goto bc12_work_func_out;
+ case MT6370_ATTACH_STAT_ATTACH_BC12_DONE:
+ ret = mt6370_chg_field_get(priv, F_USB_STAT, &usb_stat);
+ if (ret) {
+ dev_err(priv->dev, "Failed to get USB status\n");
+ goto bc12_work_func_out;
+ }
+ break;
+ default:
+ dev_err(priv->dev, "Invalid attach state\n");
+ goto bc12_work_func_out;
+ }
+
+ rpt_psy = true;
+
+ switch (usb_stat) {
+ case MT6370_USB_STAT_SDP:
+ case MT6370_USB_STAT_SDP_NSTD:
+ priv->psy_usb_type = POWER_SUPPLY_USB_TYPE_SDP;
+ break;
+ case MT6370_USB_STAT_DCP:
+ priv->psy_usb_type = POWER_SUPPLY_USB_TYPE_DCP;
+ break;
+ case MT6370_USB_STAT_CDP:
+ priv->psy_usb_type = POWER_SUPPLY_USB_TYPE_CDP;
+ break;
+ case MT6370_USB_STAT_NO_VBUS:
+ case MT6370_USB_STAT_VBUS_FLOW_IS_UNDER_GOING:
+ default:
+ priv->psy_usb_type = POWER_SUPPLY_USB_TYPE_UNKNOWN;
+ break;
+ }
+
+bc12_work_func_out:
+ mutex_unlock(&priv->attach_lock);
+
+ if (rpt_psy)
+ power_supply_changed(priv->psy);
+}
+
+static int mt6370_chg_toggle_cfo(struct mt6370_priv *priv)
+{
+ int ret;
+ unsigned int fl_strobe;
+
+ /* check if flash led in strobe mode */
+ ret = mt6370_chg_field_get(priv, F_FL_STROBE, &fl_strobe);
+ if (ret) {
+ dev_err(priv->dev, "Failed to get FL_STROBE_EN\n");
+ return ret;
+ }
+
+ if (fl_strobe) {
+ dev_err(priv->dev, "Flash led is still in strobe mode\n");
+ return ret;
+ }
+
+ /* cfo off */
+ ret = mt6370_chg_field_set(priv, F_CFO_EN, 0);
+ if (ret) {
+ dev_err(priv->dev, "Failed to disable CFO_EN\n");
+ return ret;
+ }
+
+ /* cfo on */
+ ret = mt6370_chg_field_set(priv, F_CFO_EN, 1);
+ if (ret)
+ dev_err(priv->dev, "Failed to enable CFO_EN\n");
+
+ return ret;
+}
+
+static int mt6370_chg_read_adc_chan(struct mt6370_priv *priv, unsigned int chan,
+ int *val)
+{
+ int ret;
+
+ if (chan >= MT6370_ADC_CHAN_MAX)
+ return -EINVAL;
+
+ ret = iio_read_channel_processed(&priv->iio_adcs[chan], val);
+ if (ret)
+ dev_err(priv->dev, "Failed to read ADC\n");
+
+ return ret;
+}
+
+static void mt6370_chg_mivr_dwork_func(struct work_struct *work)
+{
+ struct mt6370_priv *priv = container_of(work, struct mt6370_priv,
+ mivr_dwork.work);
+ int ret;
+ unsigned int mivr_stat, ibus;
+
+ ret = mt6370_chg_field_get(priv, F_CHG_MIVR_STAT, &mivr_stat);
+ if (ret) {
+ dev_err(priv->dev, "Failed to get mivr state\n");
+ goto mivr_handler_out;
+ }
+
+ if (!mivr_stat)
+ goto mivr_handler_out;
+
+ ret = mt6370_chg_read_adc_chan(priv, MT6370_ADC_CHAN_IBUS, &ibus);
+ if (ret) {
+ dev_err(priv->dev, "Failed to get ibus\n");
+ goto mivr_handler_out;
+ }
+
+ if (ibus < MT6370_MIVR_IBUS_TH_100_mA) {
+ ret = mt6370_chg_toggle_cfo(priv);
+ if (ret)
+ dev_err(priv->dev, "Failed to toggle cfo\n");
+ }
+
+mivr_handler_out:
+ enable_irq(priv->irq_nums[MT6370_IRQ_MIVR]);
+ pm_relax(priv->dev);
+}
+
+static void mt6370_chg_pwr_rdy_check(struct mt6370_priv *priv)
+{
+ int ret;
+ unsigned int opposite_pwr_rdy, otg_en;
+ union power_supply_propval val;
+
+ /* Check in OTG mode or not */
+ ret = mt6370_chg_field_get(priv, F_BOOST_STAT, &otg_en);
+ if (ret) {
+ dev_err(priv->dev, "Failed to get OTG state\n");
+ return;
+ }
+
+ if (otg_en)
+ return;
+
+ ret = mt6370_chg_field_get(priv, F_UVP_D_STAT, &opposite_pwr_rdy);
+ if (ret) {
+ dev_err(priv->dev, "Failed to get opposite power ready state\n");
+ return;
+ }
+
+ val.intval = opposite_pwr_rdy ?
+ MT6370_ATTACH_STAT_DETACH :
+ MT6370_ATTACH_STAT_ATTACH_WAIT_FOR_BC12;
+
+ ret = power_supply_set_property(priv->psy, POWER_SUPPLY_PROP_ONLINE,
+ &val);
+ if (ret)
+ dev_err(priv->dev, "Failed to start attach/detach flow\n");
+}
+
+static int mt6370_chg_get_online(struct mt6370_priv *priv,
+ union power_supply_propval *val)
+{
+ mutex_lock(&priv->attach_lock);
+ val->intval = !!priv->attach;
+ mutex_unlock(&priv->attach_lock);
+
+ return 0;
+}
+
+static int mt6370_chg_get_status(struct mt6370_priv *priv,
+ union power_supply_propval *val)
+{
+ int ret;
+ unsigned int chg_stat;
+ union power_supply_propval online;
+
+ ret = power_supply_get_property(priv->psy, POWER_SUPPLY_PROP_ONLINE,
+ &online);
+ if (ret) {
+ dev_err(priv->dev, "Failed to get online status\n");
+ return ret;
+ }
+
+ if (!online.intval) {
+ val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
+ return 0;
+ }
+
+ ret = mt6370_chg_field_get(priv, F_CHG_STAT, &chg_stat);
+ if (ret)
+ return ret;
+
+ switch (chg_stat) {
+ case MT6370_CHG_STAT_READY:
+ case MT6370_CHG_STAT_FAULT:
+ val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING;
+ return ret;
+ case MT6370_CHG_STAT_CHARGE_IN_PROGRESS:
+ val->intval = POWER_SUPPLY_STATUS_CHARGING;
+ return ret;
+ case MT6370_CHG_STAT_DONE:
+ val->intval = POWER_SUPPLY_STATUS_FULL;
+ return ret;
+ default:
+ val->intval = POWER_SUPPLY_STATUS_UNKNOWN;
+ return ret;
+ }
+}
+
+static int mt6370_chg_get_charge_type(struct mt6370_priv *priv,
+ union power_supply_propval *val)
+{
+ int type, ret;
+ unsigned int chg_stat, vbat_lvl;
+
+ ret = mt6370_chg_field_get(priv, F_CHG_STAT, &chg_stat);
+ if (ret)
+ return ret;
+
+ ret = mt6370_chg_field_get(priv, F_VBAT_LVL, &vbat_lvl);
+ if (ret)
+ return ret;
+
+ switch (chg_stat) {
+ case MT6370_CHG_STAT_CHARGE_IN_PROGRESS:
+ if (vbat_lvl)
+ type = POWER_SUPPLY_CHARGE_TYPE_FAST;
+ else
+ type = POWER_SUPPLY_CHARGE_TYPE_TRICKLE;
+ break;
+ case MT6370_CHG_STAT_READY:
+ case MT6370_CHG_STAT_DONE:
+ case MT6370_CHG_STAT_FAULT:
+ default:
+ type = POWER_SUPPLY_CHARGE_TYPE_NONE;
+ break;
+ }
+
+ val->intval = type;
+
+ return 0;
+}
+
+static int mt6370_chg_set_online(struct mt6370_priv *priv,
+ const union power_supply_propval *val)
+{
+ bool pwr_rdy = !!val->intval;
+
+ mutex_lock(&priv->attach_lock);
+ if (pwr_rdy == !!priv->attach) {
+ dev_err(priv->dev, "pwr_rdy is same(%d)\n", pwr_rdy);
+ mutex_unlock(&priv->attach_lock);
+ return 0;
+ }
+
+ priv->attach = pwr_rdy;
+ mutex_unlock(&priv->attach_lock);
+
+ if (!queue_work(priv->wq, &priv->bc12_work))
+ dev_err(priv->dev, "bc12 work has already queued\n");
+
+ return 0;
+}
+
+static int mt6370_chg_get_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ struct mt6370_priv *priv = power_supply_get_drvdata(psy);
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_ONLINE:
+ return mt6370_chg_get_online(priv, val);
+ case POWER_SUPPLY_PROP_STATUS:
+ return mt6370_chg_get_status(priv, val);
+ case POWER_SUPPLY_PROP_CHARGE_TYPE:
+ return mt6370_chg_get_charge_type(priv, val);
+ case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT:
+ return mt6370_chg_field_get(priv, F_ICHG, &val->intval);
+ case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX:
+ val->intval = linear_range_get_max_value(&mt6370_chg_ranges[MT6370_RANGE_F_ICHG]);
+ return 0;
+ case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE:
+ return mt6370_chg_field_get(priv, F_VOREG, &val->intval);
+ case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX:
+ val->intval = linear_range_get_max_value(&mt6370_chg_ranges[MT6370_RANGE_F_VOREG]);
+ return 0;
+ case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT:
+ return mt6370_chg_field_get(priv, F_IAICR, &val->intval);
+ case POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT:
+ return mt6370_chg_field_get(priv, F_VMIVR, &val->intval);
+ case POWER_SUPPLY_PROP_PRECHARGE_CURRENT:
+ return mt6370_chg_field_get(priv, F_IPREC, &val->intval);
+ case POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT:
+ return mt6370_chg_field_get(priv, F_IEOC, &val->intval);
+ case POWER_SUPPLY_PROP_USB_TYPE:
+ val->intval = priv->psy_usb_type;
+ return 0;
+ default:
+ return -EINVAL;
+ }
+}
+
+static int mt6370_chg_set_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ const union power_supply_propval *val)
+{
+ struct mt6370_priv *priv = power_supply_get_drvdata(psy);
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_ONLINE:
+ return mt6370_chg_set_online(priv, val);
+ case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT:
+ return mt6370_chg_field_set(priv, F_ICHG, val->intval);
+ case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE:
+ return mt6370_chg_field_set(priv, F_VOREG, val->intval);
+ case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT:
+ return mt6370_chg_field_set(priv, F_IAICR, val->intval);
+ case POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT:
+ return mt6370_chg_field_set(priv, F_VMIVR, val->intval);
+ case POWER_SUPPLY_PROP_PRECHARGE_CURRENT:
+ return mt6370_chg_field_set(priv, F_IPREC, val->intval);
+ case POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT:
+ return mt6370_chg_field_set(priv, F_IEOC, val->intval);
+ default:
+ return -EINVAL;
+ }
+}
+
+static int mt6370_chg_property_is_writeable(struct power_supply *psy,
+ enum power_supply_property psp)
+{
+ switch (psp) {
+ case POWER_SUPPLY_PROP_ONLINE:
+ case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT:
+ case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE:
+ case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT:
+ case POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT:
+ case POWER_SUPPLY_PROP_PRECHARGE_CURRENT:
+ case POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT:
+ return 1;
+ default:
+ return 0;
+ }
+}
+
+static enum power_supply_property mt6370_chg_properties[] = {
+ POWER_SUPPLY_PROP_ONLINE,
+ POWER_SUPPLY_PROP_STATUS,
+ POWER_SUPPLY_PROP_CHARGE_TYPE,
+ POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT,
+ POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX,
+ POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE,
+ POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX,
+ POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT,
+ POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT,
+ POWER_SUPPLY_PROP_PRECHARGE_CURRENT,
+ POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT,
+ POWER_SUPPLY_PROP_USB_TYPE,
+};
+
+static enum power_supply_usb_type mt6370_chg_usb_types[] = {
+ POWER_SUPPLY_USB_TYPE_UNKNOWN,
+ POWER_SUPPLY_USB_TYPE_SDP,
+ POWER_SUPPLY_USB_TYPE_CDP,
+ POWER_SUPPLY_USB_TYPE_DCP,
+};
+
+static const struct power_supply_desc mt6370_chg_psy_desc = {
+ .name = "mt6370-charger",
+ .type = POWER_SUPPLY_TYPE_USB,
+ .properties = mt6370_chg_properties,
+ .num_properties = ARRAY_SIZE(mt6370_chg_properties),
+ .get_property = mt6370_chg_get_property,
+ .set_property = mt6370_chg_set_property,
+ .property_is_writeable = mt6370_chg_property_is_writeable,
+ .usb_types = mt6370_chg_usb_types,
+ .num_usb_types = ARRAY_SIZE(mt6370_chg_usb_types),
+};
+
+static const struct regulator_ops mt6370_chg_otg_ops = {
+ .list_voltage = regulator_list_voltage_linear,
+ .enable = regulator_enable_regmap,
+ .disable = regulator_disable_regmap,
+ .is_enabled = regulator_is_enabled_regmap,
+ .set_voltage_sel = regulator_set_voltage_sel_regmap,
+ .get_voltage_sel = regulator_get_voltage_sel_regmap,
+ .set_current_limit = regulator_set_current_limit_regmap,
+ .get_current_limit = regulator_get_current_limit_regmap,
+};
+
+static const u32 mt6370_chg_otg_oc_ma[] = {
+ 500000, 700000, 1100000, 1300000, 1800000, 2100000, 2400000,
+};
+
+static const struct regulator_desc mt6370_chg_otg_rdesc = {
+ .of_match = "usb-otg-vbus-regulator",
+ .of_parse_cb = mt6370_chg_otg_of_parse_cb,
+ .name = "mt6370-usb-otg-vbus",
+ .ops = &mt6370_chg_otg_ops,
+ .owner = THIS_MODULE,
+ .type = REGULATOR_VOLTAGE,
+ .min_uV = 4425000,
+ .uV_step = 25000,
+ .n_voltages = 57,
+ .vsel_reg = MT6370_REG_CHG_CTRL5,
+ .vsel_mask = MT6370_VOBST_MASK,
+ .enable_reg = MT6370_REG_CHG_CTRL1,
+ .enable_mask = MT6370_OPA_MODE_MASK,
+ .curr_table = mt6370_chg_otg_oc_ma,
+ .n_current_limits = ARRAY_SIZE(mt6370_chg_otg_oc_ma),
+ .csel_reg = MT6370_REG_CHG_CTRL10,
+ .csel_mask = MT6370_OTG_OC_MASK,
+};
+
+static int mt6370_chg_init_rmap_fields(struct mt6370_priv *priv)
+{
+ int i;
+ const struct mt6370_chg_field *fds = mt6370_chg_fields;
+
+ for (i = 0; i < F_MAX; i++) {
+ priv->rmap_fields[i] = devm_regmap_field_alloc(priv->dev,
+ priv->regmap,
+ fds[i].field);
+ if (IS_ERR(priv->rmap_fields[i]))
+ return dev_err_probe(priv->dev,
+ PTR_ERR(priv->rmap_fields[i]),
+ "Failed to allocate regmapfield[%s]\n",
+ fds[i].name);
+ }
+
+ return 0;
+}
+
+static int mt6370_chg_init_setting(struct mt6370_priv *priv)
+{
+ int ret;
+
+ /* Disable usb_chg_en */
+ ret = mt6370_chg_field_set(priv, F_USBCHGEN, 0);
+ if (ret) {
+ dev_err(priv->dev, "Failed to disable usb_chg_en\n");
+ return ret;
+ }
+
+ /* Disable input current limit */
+ ret = mt6370_chg_field_set(priv, F_ILIM_EN, 0);
+ if (ret) {
+ dev_err(priv->dev, "Failed to disable input current limit\n");
+ return ret;
+ }
+
+ /* ICHG/IEOC Workaround, ICHG can not be set less than 900mA */
+ ret = mt6370_chg_field_set(priv, F_ICHG, 900000);
+ if (ret) {
+ dev_err(priv->dev, "Failed to set ICHG to 900mA");
+ return ret;
+ }
+
+ /* Change input current limit selection to using IAICR results */
+ ret = mt6370_chg_field_set(priv, F_IINLMTSEL, 2);
+ if (ret) {
+ dev_err(priv->dev, "Failed to set IINLMTSEL\n");
+ return ret;
+ }
+
+ return 0;
+}
+
+#define MT6370_CHG_DT_PROP_DECL(_name, _type, _field) \
+{ \
+ .name = "mediatek,chg-" #_name, \
+ .type = MT6370_PARSE_TYPE_##_type, \
+ .fd = _field, \
+}
+
+static int mt6370_chg_init_otg_regulator(struct mt6370_priv *priv)
+{
+ struct regulator_config rcfg = {
+ .dev = priv->dev,
+ .regmap = priv->regmap,
+ .driver_data = priv,
+ };
+
+ priv->rdev = devm_regulator_register(priv->dev, &mt6370_chg_otg_rdesc,
+ &rcfg);
+
+ return PTR_ERR_OR_ZERO(priv->rdev);
+}
+
+static int mt6370_chg_init_psy(struct mt6370_priv *priv)
+{
+ struct power_supply_config cfg = {
+ .drv_data = priv,
+ .of_node = dev_of_node(priv->dev),
+ };
+
+ priv->psy = devm_power_supply_register(priv->dev, &mt6370_chg_psy_desc,
+ &cfg);
+
+ return PTR_ERR_OR_ZERO(priv->psy);
+}
+
+static void mt6370_chg_destroy_attach_lock(void *data)
+{
+ struct mutex *attach_lock = data;
+
+ mutex_destroy(attach_lock);
+}
+
+static void mt6370_chg_destroy_wq(void *data)
+{
+ struct workqueue_struct *wq = data;
+
+ flush_workqueue(wq);
+ destroy_workqueue(wq);
+}
+
+static irqreturn_t mt6370_attach_i_handler(int irq, void *data)
+{
+ struct mt6370_priv *priv = data;
+ unsigned int otg_en;
+ int ret;
+
+ /* Check in OTG mode or not */
+ ret = mt6370_chg_field_get(priv, F_BOOST_STAT, &otg_en);
+ if (ret) {
+ dev_err(priv->dev, "Failed to get OTG state\n");
+ return IRQ_NONE;
+ }
+
+ if (otg_en)
+ return IRQ_HANDLED;
+
+ mutex_lock(&priv->attach_lock);
+ priv->attach = MT6370_ATTACH_STAT_ATTACH_BC12_DONE;
+ mutex_unlock(&priv->attach_lock);
+
+ if (!queue_work(priv->wq, &priv->bc12_work))
+ dev_err(priv->dev, "bc12 work has already queued\n");
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t mt6370_uvp_d_evt_handler(int irq, void *data)
+{
+ struct mt6370_priv *priv = data;
+
+ mt6370_chg_pwr_rdy_check(priv);
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t mt6370_mivr_handler(int irq, void *data)
+{
+ struct mt6370_priv *priv = data;
+
+ pm_stay_awake(priv->dev);
+ disable_irq_nosync(priv->irq_nums[MT6370_IRQ_MIVR]);
+ schedule_delayed_work(&priv->mivr_dwork, msecs_to_jiffies(200));
+
+ return IRQ_HANDLED;
+}
+
+#define MT6370_CHG_IRQ(_name) \
+{ \
+ .name = #_name, \
+ .handler = mt6370_##_name##_handler, \
+}
+
+static int mt6370_chg_init_irq(struct mt6370_priv *priv)
+{
+ int i, ret;
+ const struct {
+ char *name;
+ irq_handler_t handler;
+ } mt6370_chg_irqs[] = {
+ MT6370_CHG_IRQ(attach_i),
+ MT6370_CHG_IRQ(uvp_d_evt),
+ MT6370_CHG_IRQ(mivr),
+ };
+
+ for (i = 0; i < ARRAY_SIZE(mt6370_chg_irqs); i++) {
+ ret = platform_get_irq_byname(to_platform_device(priv->dev),
+ mt6370_chg_irqs[i].name);
+ if (ret < 0)
+ return dev_err_probe(priv->dev, ret,
+ "Failed to get irq %s\n",
+ mt6370_chg_irqs[i].name);
+
+ priv->irq_nums[i] = ret;
+ ret = devm_request_threaded_irq(priv->dev, ret, NULL,
+ mt6370_chg_irqs[i].handler,
+ IRQF_TRIGGER_FALLING,
+ dev_name(priv->dev), priv);
+ if (ret)
+ return dev_err_probe(priv->dev, ret,
+ "Failed to request irq %s\n",
+ mt6370_chg_irqs[i].name);
+ }
+
+ return 0;
+}
+
+static int mt6370_chg_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct mt6370_priv *priv;
+ int ret;
+
+ priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
+
+ priv->dev = &pdev->dev;
+
+ priv->regmap = dev_get_regmap(pdev->dev.parent, NULL);
+ if (!priv->regmap)
+ return dev_err_probe(dev, -ENODEV, "Failed to get regmap\n");
+
+ ret = mt6370_chg_init_rmap_fields(priv);
+ if (ret)
+ return dev_err_probe(dev, ret, "Failed to init regmap fields\n");
+
+ platform_set_drvdata(pdev, priv);
+
+ priv->iio_adcs = devm_iio_channel_get_all(priv->dev);
+ if (IS_ERR(priv->iio_adcs))
+ return dev_err_probe(dev, PTR_ERR(priv->iio_adcs),
+ "Failed to get iio adc\n");
+
+ ret = mt6370_chg_init_otg_regulator(priv);
+ if (ret)
+ return dev_err_probe(dev, ret, "Failed to init OTG regulator\n");
+
+ ret = mt6370_chg_init_psy(priv);
+ if (ret)
+ return dev_err_probe(dev, ret, "Failed to init psy\n");
+
+ mutex_init(&priv->attach_lock);
+ ret = devm_add_action_or_reset(dev, mt6370_chg_destroy_attach_lock,
+ &priv->attach_lock);
+ if (ret)
+ return dev_err_probe(dev, ret, "Failed to init attach lock\n");
+
+ priv->attach = MT6370_ATTACH_STAT_DETACH;
+
+ priv->wq = create_singlethread_workqueue(dev_name(priv->dev));
+ if (!priv->wq)
+ return dev_err_probe(dev, -ENOMEM,
+ "Failed to create workqueue\n");
+
+ ret = devm_add_action_or_reset(dev, mt6370_chg_destroy_wq, priv->wq);
+ if (ret)
+ return dev_err_probe(dev, ret, "Failed to init wq\n");
+
+ ret = devm_work_autocancel(dev, &priv->bc12_work, mt6370_chg_bc12_work_func);
+ if (ret)
+ return dev_err_probe(dev, ret, "Failed to init bc12 work\n");
+
+ ret = devm_delayed_work_autocancel(dev, &priv->mivr_dwork, mt6370_chg_mivr_dwork_func);
+ if (ret)
+ return dev_err_probe(dev, ret, "Failed to init mivr delayed work\n");
+
+ ret = mt6370_chg_init_setting(priv);
+ if (ret)
+ return dev_err_probe(dev, ret,
+ "Failed to init mt6370 charger setting\n");
+
+ ret = mt6370_chg_init_irq(priv);
+ if (ret)
+ return ret;
+
+ mt6370_chg_pwr_rdy_check(priv);
+
+ return 0;
+}
+
+static const struct of_device_id mt6370_chg_of_match[] = {
+ { .compatible = "mediatek,mt6370-charger", },
+ {}
+};
+MODULE_DEVICE_TABLE(of, mt6370_chg_of_match);
+
+static struct platform_driver mt6370_chg_driver = {
+ .probe = mt6370_chg_probe,
+ .driver = {
+ .name = "mt6370-charger",
+ .of_match_table = mt6370_chg_of_match,
+ },
+};
+module_platform_driver(mt6370_chg_driver);
+
+MODULE_AUTHOR("ChiaEn Wu <chiaen_wu@richtek.com>");
+MODULE_DESCRIPTION("MediaTek MT6370 Charger Driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/power/supply/power_supply_sysfs.c b/drivers/power/supply/power_supply_sysfs.c
index 4239591e1522..5369abaceb5c 100644
--- a/drivers/power/supply/power_supply_sysfs.c
+++ b/drivers/power/supply/power_supply_sysfs.c
@@ -442,7 +442,7 @@ static int add_prop_uevent(struct device *dev, struct kobj_uevent_env *env,
if (ret == -ENODEV || ret == -ENODATA) {
/*
* When a battery is absent, we expect -ENODEV. Don't abort;
- * send the uevent with at least the the PRESENT=0 property
+ * send the uevent with at least the PRESENT=0 property
*/
return 0;
}
diff --git a/drivers/power/supply/tps65217_charger.c b/drivers/power/supply/tps65217_charger.c
index ba33d1617e0b..a4bc9f2a10bc 100644
--- a/drivers/power/supply/tps65217_charger.c
+++ b/drivers/power/supply/tps65217_charger.c
@@ -50,7 +50,7 @@ static int tps65217_config_charger(struct tps65217_charger *charger)
* tps65217 rev. G, p. 31 (see p. 32 for NTC schematic)
*
* The device can be configured to support a 100k NTC (B = 3960) by
- * setting the the NTC_TYPE bit in register CHGCONFIG1 to 1. However it
+ * setting the NTC_TYPE bit in register CHGCONFIG1 to 1. However it
* is not recommended to do so. In sleep mode, the charger continues
* charging the battery, but all register values are reset to default
* values. Therefore, the charger would get the wrong temperature
diff --git a/include/linux/linear_range.h b/include/linux/linear_range.h
index fd3d0b358f22..2e4f4c3539c0 100644
--- a/include/linux/linear_range.h
+++ b/include/linux/linear_range.h
@@ -26,6 +26,17 @@ struct linear_range {
unsigned int step;
};
+#define LINEAR_RANGE(_min, _min_sel, _max_sel, _step) \
+ { \
+ .min = _min, \
+ .min_sel = _min_sel, \
+ .max_sel = _max_sel, \
+ .step = _step, \
+ }
+
+#define LINEAR_RANGE_IDX(_idx, _min, _min_sel, _max_sel, _step) \
+ [_idx] = LINEAR_RANGE(_min, _min_sel, _max_sel, _step)
+
unsigned int linear_range_values_in_range(const struct linear_range *r);
unsigned int linear_range_values_in_range_array(const struct linear_range *r,
int ranges);
diff --git a/include/linux/power_supply.h b/include/linux/power_supply.h
index cb380c1d9459..aa2c4a7c4826 100644
--- a/include/linux/power_supply.h
+++ b/include/linux/power_supply.h
@@ -374,9 +374,37 @@ struct power_supply_vbat_ri_table {
* These timers should be chosen to align with the typical discharge curve
* for the battery.
*
- * When the main CC/CV charging is complete the battery can optionally be
- * maintenance charged at the voltages from this table: a table of settings is
- * traversed using a slightly lower current and voltage than what is used for
+ * Ordinary CC/CV charging will stop charging when the charge current goes
+ * below charge_term_current_ua, and then restart it (if the device is still
+ * plugged into the charger) at charge_restart_voltage_uv. This happens in most
+ * consumer products because the power usage while connected to a charger is
+ * not zero, and devices are not manufactured to draw power directly from the
+ * charger: instead they will at all times dissipate the battery a little, like
+ * the power used in standby mode. This will over time give a charge graph
+ * such as this:
+ *
+ * Energy
+ * ^ ... ... ... ... ... ... ...
+ * | . . . . . . . . . . . . .
+ * | .. . .. . .. . .. . .. . .. . ..
+ * |. .. .. .. .. .. ..
+ * +-------------------------------------------------------------------> t
+ *
+ * Practically this means that the Li-ions are wandering back and forth in the
+ * battery and this causes degeneration of the battery anode and cathode.
+ * To prolong the life of the battery, maintenance charging is applied after
+ * reaching charge_term_current_ua to hold up the charge in the battery while
+ * consuming power, thus lowering the wear on the battery:
+ *
+ * Energy
+ * ^ .......................................
+ * | . ......................
+ * | ..
+ * |.
+ * +-------------------------------------------------------------------> t
+ *
+ * Maintenance charging uses the voltages from this table: a table of settings
+ * is traversed using a slightly lower current and voltage than what is used for
* CC/CV charging. The maintenance charging will for safety reasons not go on
* indefinately: we lower the current and voltage with successive maintenance
* settings, then disable charging completely after we reach the last one,
@@ -385,14 +413,22 @@ struct power_supply_vbat_ri_table {
* ordinary CC/CV charging from there.
*
* As an example, a Samsung EB425161LA Lithium-Ion battery is CC/CV charged
- * at 900mA to 4340mV, then maintenance charged at 600mA and 4150mV for
- * 60 hours, then maintenance charged at 600mA and 4100mV for 200 hours.
+ * at 900mA to 4340mV, then maintenance charged at 600mA and 4150mV for up to
+ * 60 hours, then maintenance charged at 600mA and 4100mV for up to 200 hours.
* After this the charge cycle is restarted waiting for
* charge_restart_voltage_uv.
*
* For most mobile electronics this type of maintenance charging is enough for
* the user to disconnect the device and make use of it before both maintenance
- * charging cycles are complete.
+ * charging cycles are complete, if the current and voltage has been chosen
+ * appropriately. These need to be determined from battery discharge curves
+ * and expected standby current.
+ *
+ * If the voltage anyway drops to charge_restart_voltage_uv during maintenance
+ * charging, ordinary CC/CV charging is restarted. This can happen if the
+ * device is e.g. actively used during charging, so more current is drawn than
+ * the expected stand-by current. Also overvoltage protection will be applied
+ * as usual.
*/
struct power_supply_maintenance_charge_table {
int charge_current_max_ua;
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-26 16:28:21 +0000