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-rw-r--r--drivers/power/reset/qcom-pon.c1
-rw-r--r--drivers/power/supply/Kconfig21
-rw-r--r--drivers/power/supply/Makefile2
-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/rk817_charger.c1211
-rw-r--r--drivers/power/supply/tps65217_charger.c2
14 files changed, 2269 insertions, 55 deletions
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 1aa8323ad9f6..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
@@ -708,6 +723,12 @@ config CHARGER_BQ256XX
charge management and system power path management devices for single
cell Li-ion and Li-polymer batteries.
+config CHARGER_RK817
+ tristate "Rockchip RK817 PMIC Battery Charger"
+ depends on MFD_RK808
+ help
+ Say Y to include support for Rockchip RK817 Battery Charger.
+
config CHARGER_SMB347
tristate "Summit Microelectronics SMB3XX Battery Charger"
depends on I2C
diff --git a/drivers/power/supply/Makefile b/drivers/power/supply/Makefile
index 7f02f36aea55..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
@@ -91,6 +92,7 @@ obj-$(CONFIG_CHARGER_BQ2515X) += bq2515x_charger.o
obj-$(CONFIG_CHARGER_BQ25890) += bq25890_charger.o
obj-$(CONFIG_CHARGER_BQ25980) += bq25980_charger.o
obj-$(CONFIG_CHARGER_BQ256XX) += bq256xx_charger.o
+obj-$(CONFIG_CHARGER_RK817) += rk817_charger.o
obj-$(CONFIG_CHARGER_SMB347) += smb347-charger.o
obj-$(CONFIG_CHARGER_TPS65090) += tps65090-charger.o
obj-$(CONFIG_CHARGER_TPS65217) += tps65217_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/rk817_charger.c b/drivers/power/supply/rk817_charger.c
new file mode 100644
index 000000000000..635f051b0821
--- /dev/null
+++ b/drivers/power/supply/rk817_charger.c
@@ -0,0 +1,1211 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Charger Driver for Rockchip rk817
+ *
+ * Copyright (c) 2021 Maya Matuszczyk <maccraft123mc@gmail.com>
+ *
+ * Authors: Maya Matuszczyk <maccraft123mc@gmail.com>
+ * Chris Morgan <macromorgan@hotmail.com>
+ */
+
+#include <asm/unaligned.h>
+#include <linux/devm-helpers.h>
+#include <linux/mfd/rk808.h>
+#include <linux/irq.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/power_supply.h>
+#include <linux/regmap.h>
+
+/* Charging statuses reported by hardware register */
+enum rk817_charge_status {
+ CHRG_OFF,
+ DEAD_CHRG,
+ TRICKLE_CHRG,
+ CC_OR_CV_CHRG,
+ CHARGE_FINISH,
+ USB_OVER_VOL,
+ BAT_TMP_ERR,
+ BAT_TIM_ERR,
+};
+
+/*
+ * Max charging current read to/written from hardware register.
+ * Note how highest value corresponding to 0x7 is the lowest
+ * current, this is per the datasheet.
+ */
+enum rk817_chg_cur {
+ CHG_1A,
+ CHG_1_5A,
+ CHG_2A,
+ CHG_2_5A,
+ CHG_2_75A,
+ CHG_3A,
+ CHG_3_5A,
+ CHG_0_5A,
+};
+
+struct rk817_charger {
+ struct device *dev;
+ struct rk808 *rk808;
+
+ struct power_supply *bat_ps;
+ struct power_supply *chg_ps;
+ bool plugged_in;
+ bool battery_present;
+
+ /*
+ * voltage_k and voltage_b values are used to calibrate the ADC
+ * voltage readings. While they are documented in the BSP kernel and
+ * datasheet as voltage_k and voltage_b, there is no further
+ * information explaining them in more detail.
+ */
+
+ uint32_t voltage_k;
+ uint32_t voltage_b;
+
+ /*
+ * soc - state of charge - like the BSP this is stored as a percentage,
+ * to the thousandth. BSP has a display state of charge (dsoc) and a
+ * remaining state of charge (rsoc). This value will be used for both
+ * purposes here so we don't do any fancy math to try and "smooth" the
+ * charge and just report it as it is. Note for example an soc of 100
+ * is stored as 100000, an soc of 50 is stored as 50000, etc.
+ */
+ int soc;
+
+ /*
+ * Capacity of battery when fully charged, equal or less than design
+ * capacity depending upon wear. BSP kernel saves to nvram in mAh,
+ * so this value is in mAh not the standard uAh.
+ */
+ int fcc_mah;
+
+ /*
+ * Calibrate the SOC on a fully charged battery, this way we can use
+ * the calibrated SOC value to correct for columb counter drift.
+ */
+ bool soc_cal;
+
+ /* Implementation specific immutable properties from device tree */
+ int res_div;
+ int sleep_enter_current_ua;
+ int sleep_filter_current_ua;
+ int bat_charge_full_design_uah;
+ int bat_voltage_min_design_uv;
+ int bat_voltage_max_design_uv;
+
+ /* Values updated periodically by driver for display. */
+ int charge_now_uah;
+ int volt_avg_uv;
+ int cur_avg_ua;
+ int max_chg_cur_ua;
+ int max_chg_volt_uv;
+ int charge_status;
+ int charger_input_volt_avg_uv;
+
+ /* Work queue to periodically update values. */
+ struct delayed_work work;
+};
+
+/* ADC coefficients extracted from BSP kernel */
+#define ADC_TO_CURRENT(adc_value, res_div) \
+ (adc_value * 172 / res_div)
+
+#define CURRENT_TO_ADC(current, samp_res) \
+ (current * samp_res / 172)
+
+#define CHARGE_TO_ADC(capacity, res_div) \
+ (capacity * res_div * 3600 / 172 * 1000)
+
+#define ADC_TO_CHARGE_UAH(adc_value, res_div) \
+ (adc_value / 3600 * 172 / res_div)
+
+static u8 rk817_chg_cur_to_reg(u32 chg_cur_ma)
+{
+ if (chg_cur_ma >= 3500)
+ return CHG_3_5A;
+ else if (chg_cur_ma >= 3000)
+ return CHG_3A;
+ else if (chg_cur_ma >= 2750)
+ return CHG_2_75A;
+ else if (chg_cur_ma >= 2500)
+ return CHG_2_5A;
+ else if (chg_cur_ma >= 2000)
+ return CHG_2A;
+ else if (chg_cur_ma >= 1500)
+ return CHG_1_5A;
+ else if (chg_cur_ma >= 1000)
+ return CHG_1A;
+ else if (chg_cur_ma >= 500)
+ return CHG_0_5A;
+ else
+ return -EINVAL;
+}
+
+static int rk817_chg_cur_from_reg(u8 reg)
+{
+ switch (reg) {
+ case CHG_0_5A:
+ return 500000;
+ case CHG_1A:
+ return 1000000;
+ case CHG_1_5A:
+ return 1500000;
+ case CHG_2A:
+ return 2000000;
+ case CHG_2_5A:
+ return 2500000;
+ case CHG_2_75A:
+ return 2750000;
+ case CHG_3A:
+ return 3000000;
+ case CHG_3_5A:
+ return 3500000;
+ default:
+ return -EINVAL;
+ }
+}
+
+static void rk817_bat_calib_vol(struct rk817_charger *charger)
+{
+ uint32_t vcalib0 = 0;
+ uint32_t vcalib1 = 0;
+ u8 bulk_reg[2];
+
+ /* calibrate voltage */
+ regmap_bulk_read(charger->rk808->regmap, RK817_GAS_GAUGE_VCALIB0_H,
+ bulk_reg, 2);
+ vcalib0 = get_unaligned_be16(bulk_reg);
+
+ regmap_bulk_read(charger->rk808->regmap, RK817_GAS_GAUGE_VCALIB1_H,
+ bulk_reg, 2);
+ vcalib1 = get_unaligned_be16(bulk_reg);
+
+ /* values were taken from BSP kernel */
+ charger->voltage_k = (4025 - 2300) * 1000 /
+ ((vcalib1 - vcalib0) ? (vcalib1 - vcalib0) : 1);
+ charger->voltage_b = 4025 - (charger->voltage_k * vcalib1) / 1000;
+}
+
+static void rk817_bat_calib_cur(struct rk817_charger *charger)
+{
+ u8 bulk_reg[2];
+
+ /* calibrate current */
+ regmap_bulk_read(charger->rk808->regmap, RK817_GAS_GAUGE_IOFFSET_H,
+ bulk_reg, 2);
+ regmap_bulk_write(charger->rk808->regmap, RK817_GAS_GAUGE_CAL_OFFSET_H,
+ bulk_reg, 2);
+}
+
+/*
+ * note that only the fcc_mah is really used by this driver, the other values
+ * are to ensure we can remain backwards compatible with the BSP kernel.
+ */
+static int rk817_record_battery_nvram_values(struct rk817_charger *charger)
+{
+ u8 bulk_reg[3];
+ int ret, rsoc;
+
+ /*
+ * write the soc value to the nvram location used by the BSP kernel
+ * for the dsoc value.
+ */
+ put_unaligned_le24(charger->soc, bulk_reg);
+ ret = regmap_bulk_write(charger->rk808->regmap, RK817_GAS_GAUGE_BAT_R1,
+ bulk_reg, 3);
+ if (ret < 0)
+ return ret;
+ /*
+ * write the remaining capacity in mah to the nvram location used by
+ * the BSP kernel for the rsoc value.
+ */
+ rsoc = (charger->soc * charger->fcc_mah) / 100000;
+ put_unaligned_le24(rsoc, bulk_reg);
+ ret = regmap_bulk_write(charger->rk808->regmap, RK817_GAS_GAUGE_DATA0,
+ bulk_reg, 3);
+ if (ret < 0)
+ return ret;
+ /* write the fcc_mah in mAh, just as the BSP kernel does. */
+ put_unaligned_le24(charger->fcc_mah, bulk_reg);
+ ret = regmap_bulk_write(charger->rk808->regmap, RK817_GAS_GAUGE_DATA3,
+ bulk_reg, 3);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+static int rk817_bat_calib_cap(struct rk817_charger *charger)
+{
+ struct rk808 *rk808 = charger->rk808;
+ int tmp, charge_now, charge_now_adc, volt_avg;
+ u8 bulk_reg[4];
+
+ /* Calibrate the soc and fcc on a fully charged battery */
+
+ if (charger->charge_status == CHARGE_FINISH && (!charger->soc_cal)) {
+ /*
+ * soc should be 100000 and columb counter should show the full
+ * charge capacity. Note that if the device is unplugged for a
+ * period of several days the columb counter will have a large
+ * margin of error, so setting it back to the full charge on
+ * a completed charge cycle should correct this (my device was
+ * showing 33% battery after 3 days unplugged when it should
+ * have been closer to 95% based on voltage and charge
+ * current).
+ */
+
+ charger->soc = 100000;
+ charge_now_adc = CHARGE_TO_ADC(charger->fcc_mah,
+ charger->res_div);
+ put_unaligned_be32(charge_now_adc, bulk_reg);
+ regmap_bulk_write(rk808->regmap, RK817_GAS_GAUGE_Q_INIT_H3,
+ bulk_reg, 4);
+
+ charger->soc_cal = 1;
+ dev_dbg(charger->dev,
+ "Fully charged. SOC is %d, full capacity is %d\n",
+ charger->soc, charger->fcc_mah * 1000);
+ }
+
+ /*
+ * The columb counter can drift up slightly, so we should correct for
+ * it. But don't correct it until we're at 100% soc.
+ */
+ if (charger->charge_status == CHARGE_FINISH && charger->soc_cal) {
+ regmap_bulk_read(rk808->regmap, RK817_GAS_GAUGE_Q_PRES_H3,
+ bulk_reg, 4);
+ charge_now_adc = get_unaligned_be32(bulk_reg);
+ if (charge_now_adc < 0)
+ return charge_now_adc;
+ charge_now = ADC_TO_CHARGE_UAH(charge_now_adc,
+ charger->res_div);
+
+ /*
+ * Re-init columb counter with updated values to correct drift.
+ */
+ if (charge_now / 1000 > charger->fcc_mah) {
+ dev_dbg(charger->dev,
+ "Recalibrating columb counter to %d uah\n",
+ charge_now);
+ /*
+ * Order of operations matters here to ensure we keep
+ * enough precision until the last step to keep from
+ * making needless updates to columb counter.
+ */
+ charge_now_adc = CHARGE_TO_ADC(charger->fcc_mah,
+ charger->res_div);
+ put_unaligned_be32(charge_now_adc, bulk_reg);
+ regmap_bulk_write(rk808->regmap,
+ RK817_GAS_GAUGE_Q_INIT_H3,
+ bulk_reg, 4);
+ }
+ }
+
+ /*
+ * Calibrate the fully charged capacity when we previously had a full
+ * battery (soc_cal = 1) and are now empty (at or below minimum design
+ * voltage). If our columb counter is still positive, subtract that
+ * from our fcc value to get a calibrated fcc, and if our columb
+ * counter is negative add that to our fcc (but not to exceed our
+ * design capacity).
+ */
+ regmap_bulk_read(charger->rk808->regmap, RK817_GAS_GAUGE_BAT_VOL_H,
+ bulk_reg, 2);
+ tmp = get_unaligned_be16(bulk_reg);
+ volt_avg = (charger->voltage_k * tmp) + 1000 * charger->voltage_b;
+ if (volt_avg <= charger->bat_voltage_min_design_uv &&
+ charger->soc_cal) {
+ regmap_bulk_read(rk808->regmap, RK817_GAS_GAUGE_Q_PRES_H3,
+ bulk_reg, 4);
+ charge_now_adc = get_unaligned_be32(bulk_reg);
+ charge_now = ADC_TO_CHARGE_UAH(charge_now_adc,
+ charger->res_div);
+ /*
+ * Note, if charge_now is negative this will add it (what we
+ * want) and if it's positive this will subtract (also what
+ * we want).
+ */
+ charger->fcc_mah = charger->fcc_mah - (charge_now / 1000);
+
+ dev_dbg(charger->dev,
+ "Recalibrating full charge capacity to %d uah\n",
+ charger->fcc_mah * 1000);
+ }
+
+ rk817_record_battery_nvram_values(charger);
+
+ return 0;
+}
+
+static void rk817_read_props(struct rk817_charger *charger)
+{
+ int tmp, reg;
+ u8 bulk_reg[4];
+
+ /*
+ * Recalibrate voltage and current readings if we need to BSP does both
+ * on CUR_CALIB_UPD, ignoring VOL_CALIB_UPD. Curiously enough, both
+ * documentation and the BSP show that you perform an update if bit 7
+ * is 1, but you clear the status by writing a 1 to bit 7.
+ */
+ regmap_read(charger->rk808->regmap, RK817_GAS_GAUGE_ADC_CONFIG1, &reg);
+ if (reg & RK817_VOL_CUR_CALIB_UPD) {
+ rk817_bat_calib_cur(charger);
+ rk817_bat_calib_vol(charger);
+ regmap_write_bits(charger->rk808->regmap,
+ RK817_GAS_GAUGE_ADC_CONFIG1,
+ RK817_VOL_CUR_CALIB_UPD,
+ RK817_VOL_CUR_CALIB_UPD);
+ }
+
+ /* Update reported charge. */
+ regmap_bulk_read(charger->rk808->regmap, RK817_GAS_GAUGE_Q_PRES_H3,
+ bulk_reg, 4);
+ tmp = get_unaligned_be32(bulk_reg);
+ charger->charge_now_uah = ADC_TO_CHARGE_UAH(tmp, charger->res_div);
+ if (charger->charge_now_uah < 0)
+ charger->charge_now_uah = 0;
+ if (charger->charge_now_uah > charger->fcc_mah * 1000)
+ charger->charge_now_uah = charger->fcc_mah * 1000;
+
+ /* Update soc based on reported charge. */
+ charger->soc = charger->charge_now_uah * 100 / charger->fcc_mah;
+
+ /* Update reported voltage. */
+ regmap_bulk_read(charger->rk808->regmap, RK817_GAS_GAUGE_BAT_VOL_H,
+ bulk_reg, 2);
+ tmp = get_unaligned_be16(bulk_reg);
+ charger->volt_avg_uv = (charger->voltage_k * tmp) + 1000 *
+ charger->voltage_b;
+
+ /*
+ * Update reported current. Note value from registers is a signed 16
+ * bit int.
+ */
+ regmap_bulk_read(charger->rk808->regmap, RK817_GAS_GAUGE_BAT_CUR_H,
+ bulk_reg, 2);
+ tmp = (short int)get_unaligned_be16(bulk_reg);
+ charger->cur_avg_ua = ADC_TO_CURRENT(tmp, charger->res_div);
+
+ /*
+ * Update the max charge current. This value shouldn't change, but we
+ * can read it to report what the PMIC says it is instead of simply
+ * returning the default value.
+ */
+ regmap_read(charger->rk808->regmap, RK817_PMIC_CHRG_OUT, &reg);
+ charger->max_chg_cur_ua =
+ rk817_chg_cur_from_reg(reg & RK817_CHRG_CUR_SEL);
+
+ /*
+ * Update max charge voltage. Like the max charge current this value
+ * shouldn't change, but we can report what the PMIC says.
+ */
+ regmap_read(charger->rk808->regmap, RK817_PMIC_CHRG_OUT, &reg);
+ charger->max_chg_volt_uv = ((((reg & RK817_CHRG_VOL_SEL) >> 4) *
+ 50000) + 4100000);
+
+ /* Check if battery still present. */
+ regmap_read(charger->rk808->regmap, RK817_PMIC_CHRG_STS, &reg);
+ charger->battery_present = (reg & RK817_BAT_EXS);
+
+ /* Get which type of charge we are using (if any). */
+ regmap_read(charger->rk808->regmap, RK817_PMIC_CHRG_STS, &reg);
+ charger->charge_status = (reg >> 4) & 0x07;
+
+ /*
+ * Get charger input voltage. Note that on my example hardware (an
+ * Odroid Go Advance) the voltage of the power connector is measured
+ * on the register labelled USB in the datasheet; I don't know if this
+ * is how it is designed or just a quirk of the implementation. I
+ * believe this will also measure the voltage of the USB output when in
+ * OTG mode, if that is the case we may need to change this in the
+ * future to return 0 if the power supply status is offline (I can't
+ * test this with my current implementation. Also, when the voltage
+ * should be zero sometimes the ADC still shows a single bit (which
+ * would register as 20000uv). When this happens set it to 0.
+ */
+ regmap_bulk_read(charger->rk808->regmap, RK817_GAS_GAUGE_USB_VOL_H,
+ bulk_reg, 2);
+ reg = get_unaligned_be16(bulk_reg);
+ if (reg > 1) {
+ tmp = ((charger->voltage_k * reg / 1000 + charger->voltage_b) *
+ 60 / 46);
+ charger->charger_input_volt_avg_uv = tmp * 1000;
+ } else {
+ charger->charger_input_volt_avg_uv = 0;
+ }
+
+ /* Calibrate battery capacity and soc. */
+ rk817_bat_calib_cap(charger);
+}
+
+static int rk817_bat_get_prop(struct power_supply *ps,
+ enum power_supply_property prop,
+ union power_supply_propval *val)
+{
+ struct rk817_charger *charger = power_supply_get_drvdata(ps);
+
+ switch (prop) {
+ case POWER_SUPPLY_PROP_PRESENT:
+ val->intval = charger->battery_present;
+ break;
+ case POWER_SUPPLY_PROP_STATUS:
+ if (charger->cur_avg_ua < 0) {
+ val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
+ break;
+ }
+ switch (charger->charge_status) {
+ case CHRG_OFF:
+ val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING;
+ break;
+ /*
+ * Dead charge is documented, but not explained. I never
+ * observed it but assume it's a pre-charge for a dead
+ * battery.
+ */
+ case DEAD_CHRG:
+ case TRICKLE_CHRG:
+ case CC_OR_CV_CHRG:
+ val->intval = POWER_SUPPLY_STATUS_CHARGING;
+ break;
+ case CHARGE_FINISH:
+ val->intval = POWER_SUPPLY_STATUS_FULL;
+ break;
+ default:
+ val->intval = POWER_SUPPLY_STATUS_UNKNOWN;
+ return -EINVAL;
+
+ }
+ break;
+ case POWER_SUPPLY_PROP_CHARGE_TYPE:
+ switch (charger->charge_status) {
+ case CHRG_OFF:
+ case CHARGE_FINISH:
+ val->intval = POWER_SUPPLY_CHARGE_TYPE_NONE;
+ break;
+ case TRICKLE_CHRG:
+ val->intval = POWER_SUPPLY_CHARGE_TYPE_TRICKLE;
+ break;
+ case DEAD_CHRG:
+ case CC_OR_CV_CHRG:
+ val->intval = POWER_SUPPLY_CHARGE_TYPE_STANDARD;
+ break;
+ default:
+ val->intval = POWER_SUPPLY_CHARGE_TYPE_UNKNOWN;
+ break;
+ }
+ break;
+ case POWER_SUPPLY_PROP_CHARGE_FULL:
+ val->intval = charger->fcc_mah * 1000;
+ break;
+ case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN:
+ val->intval = charger->bat_charge_full_design_uah;
+ break;
+ case POWER_SUPPLY_PROP_CHARGE_EMPTY_DESIGN:
+ val->intval = 0;
+ break;
+ case POWER_SUPPLY_PROP_CHARGE_NOW:
+ val->intval = charger->charge_now_uah;
+ break;
+ case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN:
+ val->intval = charger->bat_voltage_min_design_uv;
+ break;
+ case POWER_SUPPLY_PROP_CAPACITY:
+ /* Add 500 so that values like 99999 are 100% not 99%. */
+ val->intval = (charger->soc + 500) / 1000;
+ if (val->intval > 100)
+ val->intval = 100;
+ if (val->intval < 0)
+ val->intval = 0;
+ break;
+ case POWER_SUPPLY_PROP_VOLTAGE_AVG:
+ val->intval = charger->volt_avg_uv;
+ break;
+ case POWER_SUPPLY_PROP_CURRENT_AVG:
+ val->intval = charger->cur_avg_ua;
+ break;
+ case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX:
+ val->intval = charger->max_chg_cur_ua;
+ break;
+ case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX:
+ val->intval = charger->max_chg_volt_uv;
+ break;
+ case POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN:
+ val->intval = charger->bat_voltage_max_design_uv;
+ break;
+ default:
+ return -EINVAL;
+ }
+ return 0;
+}
+
+static int rk817_chg_get_prop(struct power_supply *ps,
+ enum power_supply_property prop,
+ union power_supply_propval *val)
+{
+ struct rk817_charger *charger = power_supply_get_drvdata(ps);
+
+ switch (prop) {
+ case POWER_SUPPLY_PROP_ONLINE:
+ val->intval = charger->plugged_in;
+ break;
+ case POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN:
+ /* max voltage from datasheet at 5.5v (default 5.0v) */
+ val->intval = 5500000;
+ break;
+ case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN:
+ /* min voltage from datasheet at 3.8v (default 5.0v) */
+ val->intval = 3800000;
+ break;
+ case POWER_SUPPLY_PROP_VOLTAGE_AVG:
+ val->intval = charger->charger_input_volt_avg_uv;
+ break;
+ /*
+ * While it's possible that other implementations could use different
+ * USB types, the current implementation for this PMIC (the Odroid Go
+ * Advance) only uses a dedicated charging port with no rx/tx lines.
+ */
+ case POWER_SUPPLY_PROP_USB_TYPE:
+ val->intval = POWER_SUPPLY_USB_TYPE_DCP;
+ break;
+ default:
+ return -EINVAL;
+ }
+ return 0;
+
+}
+
+static irqreturn_t rk817_plug_in_isr(int irq, void *cg)
+{
+ struct rk817_charger *charger;
+
+ charger = (struct rk817_charger *)cg;
+ charger->plugged_in = 1;
+ power_supply_changed(charger->chg_ps);
+ power_supply_changed(charger->bat_ps);
+ /* try to recalibrate capacity if we hit full charge. */
+ charger->soc_cal = 0;
+
+ rk817_read_props(charger);
+
+ dev_dbg(charger->dev, "Power Cord Inserted\n");
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t rk817_plug_out_isr(int irq, void *cg)
+{
+ struct rk817_charger *charger;
+ struct rk808 *rk808;
+
+ charger = (struct rk817_charger *)cg;
+ rk808 = charger->rk808;
+ charger->plugged_in = 0;
+ power_supply_changed(charger->bat_ps);
+ power_supply_changed(charger->chg_ps);
+
+ /*
+ * For some reason the bits of RK817_PMIC_CHRG_IN reset whenever the
+ * power cord is unplugged. This was not documented in the BSP kernel
+ * or the datasheet and only discovered by trial and error. Set minimum
+ * USB input voltage to 4.5v and enable USB voltage input limit.
+ */
+ regmap_write_bits(rk808->regmap, RK817_PMIC_CHRG_IN,
+ RK817_USB_VLIM_SEL, (0x05 << 4));
+ regmap_write_bits(rk808->regmap, RK817_PMIC_CHRG_IN, RK817_USB_VLIM_EN,
+ (0x01 << 7));
+
+ /*
+ * Set average USB input current limit to 1.5A and enable USB current
+ * input limit.
+ */
+ regmap_write_bits(rk808->regmap, RK817_PMIC_CHRG_IN,
+ RK817_USB_ILIM_SEL, 0x03);
+ regmap_write_bits(rk808->regmap, RK817_PMIC_CHRG_IN, RK817_USB_ILIM_EN,
+ (0x01 << 3));
+
+ rk817_read_props(charger);
+
+ dev_dbg(charger->dev, "Power Cord Removed\n");
+
+ return IRQ_HANDLED;
+}
+
+static enum power_supply_property rk817_bat_props[] = {
+ POWER_SUPPLY_PROP_PRESENT,
+ POWER_SUPPLY_PROP_STATUS,
+ POWER_SUPPLY_PROP_CHARGE_TYPE,
+ POWER_SUPPLY_PROP_CHARGE_FULL,
+ POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
+ POWER_SUPPLY_PROP_CHARGE_EMPTY_DESIGN,
+ POWER_SUPPLY_PROP_CHARGE_NOW,
+ POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX,
+ POWER_SUPPLY_PROP_VOLTAGE_AVG,
+ POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX,
+ POWER_SUPPLY_PROP_CURRENT_AVG,
+ POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN,
+ POWER_SUPPLY_PROP_CAPACITY,
+ POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN,
+};
+
+static enum power_supply_property rk817_chg_props[] = {
+ POWER_SUPPLY_PROP_ONLINE,
+ POWER_SUPPLY_PROP_USB_TYPE,
+ POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN,
+ POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN,
+ POWER_SUPPLY_PROP_VOLTAGE_AVG,
+};
+
+static enum power_supply_usb_type rk817_usb_type[] = {
+ POWER_SUPPLY_USB_TYPE_DCP,
+ POWER_SUPPLY_USB_TYPE_UNKNOWN,
+};
+
+static const struct power_supply_desc rk817_bat_desc = {
+ .name = "rk817-battery",
+ .type = POWER_SUPPLY_TYPE_BATTERY,
+ .properties = rk817_bat_props,
+ .num_properties = ARRAY_SIZE(rk817_bat_props),
+ .get_property = rk817_bat_get_prop,
+};
+
+static const struct power_supply_desc rk817_chg_desc = {
+ .name = "rk817-charger",
+ .type = POWER_SUPPLY_TYPE_USB,
+ .usb_types = rk817_usb_type,
+ .num_usb_types = ARRAY_SIZE(rk817_usb_type),
+ .properties = rk817_chg_props,
+ .num_properties = ARRAY_SIZE(rk817_chg_props),
+ .get_property = rk817_chg_get_prop,
+};
+
+static int rk817_read_battery_nvram_values(struct rk817_charger *charger)
+{
+ u8 bulk_reg[3];
+ int ret;
+
+ /* Read the nvram data for full charge capacity. */
+ ret = regmap_bulk_read(charger->rk808->regmap,
+ RK817_GAS_GAUGE_DATA3, bulk_reg, 3);
+ if (ret < 0)
+ return ret;
+ charger->fcc_mah = get_unaligned_le24(bulk_reg);
+
+ /*
+ * Sanity checking for values equal to zero or less than would be
+ * practical for this device (BSP Kernel assumes 500mAH or less) for
+ * practicality purposes. Also check if the value is too large and
+ * correct it.
+ */
+ if ((charger->fcc_mah < 500) ||
+ ((charger->fcc_mah * 1000) > charger->bat_charge_full_design_uah)) {
+ dev_info(charger->dev,
+ "Invalid NVRAM max charge, setting to %u uAH\n",
+ charger->bat_charge_full_design_uah);
+ charger->fcc_mah = charger->bat_charge_full_design_uah / 1000;
+ }
+
+ /*
+ * Read the nvram for state of charge. Sanity check for values greater
+ * than 100 (10000). If the value is off it should get corrected
+ * automatically when the voltage drops to the min (soc is 0) or when
+ * the battery is full (soc is 100).
+ */
+ ret = regmap_bulk_read(charger->rk808->regmap,
+ RK817_GAS_GAUGE_BAT_R1, bulk_reg, 3);
+ if (ret < 0)
+ return ret;
+ charger->soc = get_unaligned_le24(bulk_reg);
+ if (charger->soc > 10000)
+ charger->soc = 10000;
+
+ return 0;
+}
+
+static int
+rk817_read_or_set_full_charge_on_boot(struct rk817_charger *charger,
+ struct power_supply_battery_info *bat_info)
+{
+ struct rk808 *rk808 = charger->rk808;
+ u8 bulk_reg[4];
+ u32 boot_voltage, boot_charge_mah, tmp;
+ int ret, reg, off_time;
+ bool first_boot;
+
+ /*
+ * Check if the battery is uninitalized. If it is, the columb counter
+ * needs to be set up.
+ */
+ ret = regmap_read(rk808->regmap, RK817_GAS_GAUGE_GG_STS, &reg);
+ if (ret < 0)
+ return ret;
+ first_boot = reg & RK817_BAT_CON;
+ /*
+ * If the battery is uninitialized, use the poweron voltage and an ocv
+ * lookup to guess our charge. The number won't be very accurate until
+ * we hit either our minimum voltage (0%) or full charge (100%).
+ */
+ if (first_boot) {
+ regmap_bulk_read(rk808->regmap, RK817_GAS_GAUGE_PWRON_VOL_H,
+ bulk_reg, 2);
+ tmp = get_unaligned_be16(bulk_reg);
+ boot_voltage = (charger->voltage_k * tmp) +
+ 1000 * charger->voltage_b;
+ /*
+ * Since only implementation has no working thermistor, assume
+ * 20C for OCV lookup. If lookup fails, report error with OCV
+ * table.
+ */
+ charger->soc = power_supply_batinfo_ocv2cap(bat_info,
+ boot_voltage,
+ 20) * 1000;
+ if (charger->soc < 0)
+ charger->soc = 0;
+
+ /* Guess that full charge capacity is the design capacity */
+ charger->fcc_mah = charger->bat_charge_full_design_uah / 1000;
+ /*
+ * Set battery as "set up". BSP driver uses this value even
+ * though datasheet claims it's a read-only value.
+ */
+ regmap_write_bits(rk808->regmap, RK817_GAS_GAUGE_GG_STS,
+ RK817_BAT_CON, 0);
+ /* Save nvram values */
+ ret = rk817_record_battery_nvram_values(charger);
+ if (ret < 0)
+ return ret;
+ } else {
+ ret = rk817_read_battery_nvram_values(charger);
+ if (ret < 0)
+ return ret;
+
+ regmap_bulk_read(rk808->regmap, RK817_GAS_GAUGE_Q_PRES_H3,
+ bulk_reg, 4);
+ tmp = get_unaligned_be32(bulk_reg);
+ if (tmp < 0)
+ tmp = 0;
+ boot_charge_mah = ADC_TO_CHARGE_UAH(tmp,
+ charger->res_div) / 1000;
+ /*
+ * Check if the columb counter has been off for more than 300
+ * minutes as it tends to drift downward. If so, re-init soc
+ * with the boot voltage instead. Note the unit values for the
+ * OFF_CNT register appear to be in decaminutes and stops
+ * counting at 2550 (0xFF) minutes. BSP kernel used OCV, but
+ * for me occasionally that would show invalid values. Boot
+ * voltage is only accurate for me on first poweron (not
+ * reboots), but we shouldn't ever encounter an OFF_CNT more
+ * than 0 on a reboot anyway.
+ */
+ regmap_read(rk808->regmap, RK817_GAS_GAUGE_OFF_CNT, &off_time);
+ if (off_time >= 30) {
+ regmap_bulk_read(rk808->regmap,
+ RK817_GAS_GAUGE_PWRON_VOL_H,
+ bulk_reg, 2);
+ tmp = get_unaligned_be16(bulk_reg);
+ boot_voltage = (charger->voltage_k * tmp) +
+ 1000 * charger->voltage_b;
+ charger->soc =
+ power_supply_batinfo_ocv2cap(bat_info,
+ boot_voltage,
+ 20) * 1000;
+ } else {
+ charger->soc = (boot_charge_mah * 1000 * 100 /
+ charger->fcc_mah);
+ }
+ }
+
+ regmap_bulk_read(rk808->regmap, RK817_GAS_GAUGE_PWRON_VOL_H,
+ bulk_reg, 2);
+ tmp = get_unaligned_be16(bulk_reg);
+ boot_voltage = (charger->voltage_k * tmp) + 1000 * charger->voltage_b;
+ regmap_bulk_read(rk808->regmap, RK817_GAS_GAUGE_Q_PRES_H3,
+ bulk_reg, 4);
+ tmp = get_unaligned_be32(bulk_reg);
+ if (tmp < 0)
+ tmp = 0;
+ boot_charge_mah = ADC_TO_CHARGE_UAH(tmp, charger->res_div) / 1000;
+ regmap_bulk_read(rk808->regmap, RK817_GAS_GAUGE_OCV_VOL_H,
+ bulk_reg, 2);
+ tmp = get_unaligned_be16(bulk_reg);
+ boot_voltage = (charger->voltage_k * tmp) + 1000 * charger->voltage_b;
+
+ /*
+ * Now we have our full charge capacity and soc, init the columb
+ * counter.
+ */
+ boot_charge_mah = charger->soc * charger->fcc_mah / 100 / 1000;
+ if (boot_charge_mah > charger->fcc_mah)
+ boot_charge_mah = charger->fcc_mah;
+ tmp = CHARGE_TO_ADC(boot_charge_mah, charger->res_div);
+ put_unaligned_be32(tmp, bulk_reg);
+ ret = regmap_bulk_write(rk808->regmap, RK817_GAS_GAUGE_Q_INIT_H3,
+ bulk_reg, 4);
+ if (ret < 0)
+ return ret;
+
+ /* Set QMAX value to max design capacity. */
+ tmp = CHARGE_TO_ADC((charger->bat_charge_full_design_uah / 1000),
+ charger->res_div);
+ put_unaligned_be32(tmp, bulk_reg);
+ ret = regmap_bulk_write(rk808->regmap, RK817_GAS_GAUGE_Q_MAX_H3,
+ bulk_reg, 4);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+static int rk817_battery_init(struct rk817_charger *charger,
+ struct power_supply_battery_info *bat_info)
+{
+ struct rk808 *rk808 = charger->rk808;
+ u32 tmp, max_chg_vol_mv, max_chg_cur_ma;
+ u8 max_chg_vol_reg, chg_term_i_reg, max_chg_cur_reg;
+ int ret, chg_term_ma;
+ u8 bulk_reg[2];
+
+ /* Get initial plug state */
+ regmap_read(rk808->regmap, RK817_SYS_STS, &tmp);
+ charger->plugged_in = (tmp & RK817_PLUG_IN_STS);
+
+ /*
+ * Turn on all ADC functions to measure battery, USB, and sys voltage,
+ * as well as batt temp. Note only tested implementation so far does
+ * not use a battery with a thermistor.
+ */
+ regmap_write(rk808->regmap, RK817_GAS_GAUGE_ADC_CONFIG0, 0xfc);
+
+ /*
+ * Set relax mode voltage sampling interval and ADC offset calibration
+ * interval to 8 minutes to mirror BSP kernel. Set voltage and current
+ * modes to average to mirror BSP kernel.
+ */
+ regmap_write(rk808->regmap, RK817_GAS_GAUGE_GG_CON, 0x04);
+
+ /* Calibrate voltage like the BSP does here. */
+ rk817_bat_calib_vol(charger);
+
+ /* Write relax threshold, derived from sleep enter current. */
+ tmp = CURRENT_TO_ADC(charger->sleep_enter_current_ua,
+ charger->res_div);
+ put_unaligned_be16(tmp, bulk_reg);
+ regmap_bulk_write(rk808->regmap, RK817_GAS_GAUGE_RELAX_THRE_H,
+ bulk_reg, 2);
+
+ /* Write sleep sample current, derived from sleep filter current. */
+ tmp = CURRENT_TO_ADC(charger->sleep_filter_current_ua,
+ charger->res_div);
+ put_unaligned_be16(tmp, bulk_reg);
+ regmap_bulk_write(rk808->regmap, RK817_GAS_GAUGE_SLEEP_CON_SAMP_CUR_H,
+ bulk_reg, 2);
+
+ /* Restart battery relax voltage */
+ regmap_write_bits(rk808->regmap, RK817_GAS_GAUGE_GG_STS,
+ RK817_RELAX_VOL_UPD, (0x0 << 2));
+
+ /*
+ * Set OCV Threshold Voltage to 127.5mV. This was hard coded like this
+ * in the BSP.
+ */
+ regmap_write(rk808->regmap, RK817_GAS_GAUGE_OCV_THRE_VOL, 0xff);
+
+ /*
+ * Set maximum charging voltage to battery max voltage. Trying to be
+ * incredibly safe with these value, as setting them wrong could
+ * overcharge the battery, which would be very bad.
+ */
+ max_chg_vol_mv = bat_info->constant_charge_voltage_max_uv / 1000;
+ max_chg_cur_ma = bat_info->constant_charge_current_max_ua / 1000;
+
+ if (max_chg_vol_mv < 4100) {
+ return dev_err_probe(charger->dev, -EINVAL,
+ "invalid max charger voltage, value %u unsupported\n",
+ max_chg_vol_mv * 1000);
+ }
+ if (max_chg_vol_mv > 4450) {
+ dev_info(charger->dev,
+ "Setting max charge voltage to 4450000uv\n");
+ max_chg_vol_mv = 4450;
+ }
+
+ if (max_chg_cur_ma < 500) {
+ return dev_err_probe(charger->dev, -EINVAL,
+ "invalid max charger current, value %u unsupported\n",
+ max_chg_cur_ma * 1000);
+ }
+ if (max_chg_cur_ma > 3500)
+ dev_info(charger->dev,
+ "Setting max charge current to 3500000ua\n");
+
+ /*
+ * Now that the values are sanity checked, if we subtract 4100 from the
+ * max voltage and divide by 50, we conviently get the exact value for
+ * the registers, which are 4.1v, 4.15v, 4.2v, 4.25v, 4.3v, 4.35v,
+ * 4.4v, and 4.45v; these correspond to values 0x00 through 0x07.
+ */
+ max_chg_vol_reg = (max_chg_vol_mv - 4100) / 50;
+
+ max_chg_cur_reg = rk817_chg_cur_to_reg(max_chg_cur_ma);
+
+ if (max_chg_vol_reg < 0 || max_chg_vol_reg > 7) {
+ return dev_err_probe(charger->dev, -EINVAL,
+ "invalid max charger voltage, value %u unsupported\n",
+ max_chg_vol_mv * 1000);
+ }
+ if (max_chg_cur_reg < 0 || max_chg_cur_reg > 7) {
+ return dev_err_probe(charger->dev, -EINVAL,
+ "invalid max charger current, value %u unsupported\n",
+ max_chg_cur_ma * 1000);
+ }
+
+ /*
+ * Write the values to the registers, and deliver an emergency warning
+ * in the event they are not written correctly.
+ */
+ ret = regmap_write_bits(rk808->regmap, RK817_PMIC_CHRG_OUT,
+ RK817_CHRG_VOL_SEL, (max_chg_vol_reg << 4));
+ if (ret) {
+ dev_emerg(charger->dev,
+ "Danger, unable to set max charger voltage: %u\n",
+ ret);
+ }
+
+ ret = regmap_write_bits(rk808->regmap, RK817_PMIC_CHRG_OUT,
+ RK817_CHRG_CUR_SEL, max_chg_cur_reg);
+ if (ret) {
+ dev_emerg(charger->dev,
+ "Danger, unable to set max charger current: %u\n",
+ ret);
+ }
+
+ /* Set charge finishing mode to analog */
+ regmap_write_bits(rk808->regmap, RK817_PMIC_CHRG_TERM,
+ RK817_CHRG_TERM_ANA_DIG, (0x0 << 2));
+
+ /*
+ * Set charge finish current, warn if value not in range and keep
+ * default.
+ */
+ chg_term_ma = bat_info->charge_term_current_ua / 1000;
+ if (chg_term_ma < 150 || chg_term_ma > 400) {
+ dev_warn(charger->dev,
+ "Invalid charge termination %u, keeping default\n",
+ chg_term_ma * 1000);
+ chg_term_ma = 200;
+ }
+
+ /*
+ * Values of 150ma, 200ma, 300ma, and 400ma correspond to 00, 01, 10,
+ * and 11.
+ */
+ chg_term_i_reg = (chg_term_ma - 100) / 100;
+ regmap_write_bits(rk808->regmap, RK817_PMIC_CHRG_TERM,
+ RK817_CHRG_TERM_ANA_SEL, chg_term_i_reg);
+
+ ret = rk817_read_or_set_full_charge_on_boot(charger, bat_info);
+ if (ret < 0)
+ return ret;
+
+ /*
+ * Set minimum USB input voltage to 4.5v and enable USB voltage input
+ * limit.
+ */
+ regmap_write_bits(rk808->regmap, RK817_PMIC_CHRG_IN,
+ RK817_USB_VLIM_SEL, (0x05 << 4));
+ regmap_write_bits(rk808->regmap, RK817_PMIC_CHRG_IN, RK817_USB_VLIM_EN,
+ (0x01 << 7));
+
+ /*
+ * Set average USB input current limit to 1.5A and enable USB current
+ * input limit.
+ */
+ regmap_write_bits(rk808->regmap, RK817_PMIC_CHRG_IN,
+ RK817_USB_ILIM_SEL, 0x03);
+ regmap_write_bits(rk808->regmap, RK817_PMIC_CHRG_IN, RK817_USB_ILIM_EN,
+ (0x01 << 3));
+
+ return 0;
+}
+
+static void rk817_charging_monitor(struct work_struct *work)
+{
+ struct rk817_charger *charger;
+
+ charger = container_of(work, struct rk817_charger, work.work);
+
+ rk817_read_props(charger);
+
+ /* Run every 8 seconds like the BSP driver did. */
+ queue_delayed_work(system_wq, &charger->work, msecs_to_jiffies(8000));
+}
+
+static int rk817_charger_probe(struct platform_device *pdev)
+{
+ struct rk808 *rk808 = dev_get_drvdata(pdev->dev.parent);
+ struct rk817_charger *charger;
+ struct device_node *node;
+ struct power_supply_battery_info *bat_info;
+ struct device *dev = &pdev->dev;
+ struct power_supply_config pscfg = {};
+ int plugin_irq, plugout_irq;
+ int of_value;
+ int ret;
+
+ node = of_get_child_by_name(dev->parent->of_node, "charger");
+ if (!node)
+ return -ENODEV;
+
+ charger = devm_kzalloc(&pdev->dev, sizeof(*charger), GFP_KERNEL);
+ if (!charger)
+ return -ENOMEM;
+
+ charger->rk808 = rk808;
+
+ charger->dev = &pdev->dev;
+ platform_set_drvdata(pdev, charger);
+
+ rk817_bat_calib_vol(charger);
+
+ pscfg.drv_data = charger;
+ pscfg.of_node = node;
+
+ /*
+ * Get sample resistor value. Note only values of 10000 or 20000
+ * microohms are allowed. Schematic for my test implementation (an
+ * Odroid Go Advance) shows a 10 milliohm resistor for reference.
+ */
+ ret = of_property_read_u32(node, "rockchip,resistor-sense-micro-ohms",
+ &of_value);
+ if (ret < 0) {
+ return dev_err_probe(dev, ret,
+ "Error reading sample resistor value\n");
+ }
+ /*
+ * Store as a 1 or a 2, since all we really use the value for is as a
+ * divisor in some calculations.
+ */
+ charger->res_div = (of_value == 20000) ? 2 : 1;
+
+ /*
+ * Get sleep enter current value. Not sure what this value is for
+ * other than to help calibrate the relax threshold.
+ */
+ ret = of_property_read_u32(node,
+ "rockchip,sleep-enter-current-microamp",
+ &of_value);
+ if (ret < 0) {
+ return dev_err_probe(dev, ret,
+ "Error reading sleep enter cur value\n");
+ }
+ charger->sleep_enter_current_ua = of_value;
+
+ /* Get sleep filter current value */
+ ret = of_property_read_u32(node,
+ "rockchip,sleep-filter-current-microamp",
+ &of_value);
+ if (ret < 0) {
+ return dev_err_probe(dev, ret,
+ "Error reading sleep filter cur value\n");
+ }
+
+ charger->sleep_filter_current_ua = of_value;
+
+ charger->bat_ps = devm_power_supply_register(&pdev->dev,
+ &rk817_bat_desc, &pscfg);
+
+ charger->chg_ps = devm_power_supply_register(&pdev->dev,
+ &rk817_chg_desc, &pscfg);
+
+ if (IS_ERR(charger->chg_ps))
+ return dev_err_probe(dev, -EINVAL,
+ "Battery failed to probe\n");
+
+ if (IS_ERR(charger->chg_ps))
+ return dev_err_probe(dev, -EINVAL,
+ "Charger failed to probe\n");
+
+ ret = power_supply_get_battery_info(charger->bat_ps,
+ &bat_info);
+ if (ret) {
+ return dev_err_probe(dev, ret,
+ "Unable to get battery info: %d\n", ret);
+ }
+
+ if ((bat_info->charge_full_design_uah <= 0) ||
+ (bat_info->voltage_min_design_uv <= 0) ||
+ (bat_info->voltage_max_design_uv <= 0) ||
+ (bat_info->constant_charge_voltage_max_uv <= 0) ||
+ (bat_info->constant_charge_current_max_ua <= 0) ||
+ (bat_info->charge_term_current_ua <= 0)) {
+ return dev_err_probe(dev, -EINVAL,
+ "Required bat info missing or invalid\n");
+ }
+
+ charger->bat_charge_full_design_uah = bat_info->charge_full_design_uah;
+ charger->bat_voltage_min_design_uv = bat_info->voltage_min_design_uv;
+ charger->bat_voltage_max_design_uv = bat_info->voltage_max_design_uv;
+
+ /*
+ * Has to run after power_supply_get_battery_info as it depends on some
+ * values discovered from that routine.
+ */
+ ret = rk817_battery_init(charger, bat_info);
+ if (ret)
+ return ret;
+
+ power_supply_put_battery_info(charger->bat_ps, bat_info);
+
+ plugin_irq = platform_get_irq(pdev, 0);
+ if (plugin_irq < 0)
+ return plugin_irq;
+
+ plugout_irq = platform_get_irq(pdev, 1);
+ if (plugout_irq < 0)
+ return plugout_irq;
+
+ ret = devm_request_threaded_irq(charger->dev, plugin_irq, NULL,
+ rk817_plug_in_isr,
+ IRQF_TRIGGER_RISING | IRQF_ONESHOT,
+ "rk817_plug_in", charger);
+ if (ret) {
+ return dev_err_probe(&pdev->dev, ret,
+ "plug_in_irq request failed!\n");
+ }
+
+ ret = devm_request_threaded_irq(charger->dev, plugout_irq, NULL,
+ rk817_plug_out_isr,
+ IRQF_TRIGGER_RISING | IRQF_ONESHOT,
+ "rk817_plug_out", charger);
+ if (ret) {
+ return dev_err_probe(&pdev->dev, ret,
+ "plug_out_irq request failed!\n");
+ }
+
+ ret = devm_delayed_work_autocancel(&pdev->dev, &charger->work,
+ rk817_charging_monitor);
+ if (ret)
+ return ret;
+
+ /* Force the first update immediately. */
+ mod_delayed_work(system_wq, &charger->work, 0);
+
+ return 0;
+}
+
+
+static struct platform_driver rk817_charger_driver = {
+ .probe = rk817_charger_probe,
+ .driver = {
+ .name = "rk817-charger",
+ },
+};
+module_platform_driver(rk817_charger_driver);
+
+MODULE_DESCRIPTION("Battery power supply driver for RK817 PMIC");
+MODULE_AUTHOR("Maya Matuszczyk <maccraft123mc@gmail.com>");
+MODULE_AUTHOR("Chris Morgan <macromorgan@hotmail.com>");
+MODULE_LICENSE("GPL");
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
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-30 19:15:09 +0100