[PATCH v3 RESEND 2/3] power: supply: rt9467: Add Richtek RT9467 charger driver
From: ChiaEn Wu
Date: Tue Jan 03 2023 - 02:30:29 EST
From: ChiaEn Wu <chiaen_wu@xxxxxxxxxxx>
RT9467 is a switch-mode single cell Li-Ion/Li-Polymer battery charger
for portable applications.
It integrates a synchronous PWM controller, power MOSFETs,
input current sensing and regulation, high-accuracy voltage regulation,
and charge termination. The charge current is regulated through
integrated sensing resistors.
The RT9467 also features USB On-The-Go (OTG) support. It also integrates
D+/D- pin for USB host/charging port detection.
Co-developed-by: ChiYuan Huang <cy_huang@xxxxxxxxxxx>
Signed-off-by: ChiYuan Huang <cy_huang@xxxxxxxxxxx>
Signed-off-by: ChiaEn Wu <chiaen_wu@xxxxxxxxxxx>
---
drivers/power/supply/Kconfig | 19 +
drivers/power/supply/Makefile | 1 +
drivers/power/supply/rt9467-charger.c | 1282 +++++++++++++++++++++++++
3 files changed, 1302 insertions(+)
create mode 100644 drivers/power/supply/rt9467-charger.c
diff --git a/drivers/power/supply/Kconfig b/drivers/power/supply/Kconfig
index 0bbfe6a7ce4d..2208ab61eac5 100644
--- a/drivers/power/supply/Kconfig
+++ b/drivers/power/supply/Kconfig
@@ -793,6 +793,25 @@ config CHARGER_RT9455
help
Say Y to enable support for Richtek RT9455 battery charger.
+config CHARGER_RT9467
+ tristate "Richtek RT9467 Battery Charger Driver"
+ depends on I2C && GPIOLIB && REGULATOR
+ select REGMAP_I2C
+ select REGMAP_IRQ
+ select LINEAR_RANGES
+ help
+ Say Y here to enable RT9467 Battery Charger.
+ RT9467 is a switch-mode single cell Li-Ion/Li-Polymer battery charger
+ for portable applications. It integrates a synchronous PWM controller,
+ power MOSFETs, input current sensing and regulation, high-accuracy
+ voltage regulation, and charge termination. The charge current is
+ regulated through integrated sensing resistors. It also features
+ USB On-The-Go (OTG) support and integrates D+/D- pin for USB
+ host/charging port detection.
+
+ This driver can also be built as a module. If so, the module
+ will be called "rt9467-charger".
+
config CHARGER_CROS_USBPD
tristate "ChromeOS EC based USBPD charger"
depends on CROS_USBPD_NOTIFY
diff --git a/drivers/power/supply/Makefile b/drivers/power/supply/Makefile
index 0ee8653e882e..9e9a603f2a4f 100644
--- a/drivers/power/supply/Makefile
+++ b/drivers/power/supply/Makefile
@@ -57,6 +57,7 @@ obj-$(CONFIG_BATTERY_MAX1721X) += max1721x_battery.o
obj-$(CONFIG_BATTERY_Z2) += z2_battery.o
obj-$(CONFIG_BATTERY_RT5033) += rt5033_battery.o
obj-$(CONFIG_CHARGER_RT9455) += rt9455_charger.o
+obj-$(CONFIG_CHARGER_RT9467) += rt9467-charger.o
obj-$(CONFIG_BATTERY_S3C_ADC) += s3c_adc_battery.o
obj-$(CONFIG_BATTERY_TWL4030_MADC) += twl4030_madc_battery.o
obj-$(CONFIG_CHARGER_88PM860X) += 88pm860x_charger.o
diff --git a/drivers/power/supply/rt9467-charger.c b/drivers/power/supply/rt9467-charger.c
new file mode 100644
index 000000000000..96ad0d7d3af4
--- /dev/null
+++ b/drivers/power/supply/rt9467-charger.c
@@ -0,0 +1,1282 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2022 Richtek Technology Corp.
+ *
+ * Author: ChiYuan Huang <cy_huang@xxxxxxxxxxx>
+ * ChiaEn Wu <chiaen_wu@xxxxxxxxxxx>
+ */
+
+#include <linux/bits.h>
+#include <linux/bitfield.h>
+#include <linux/completion.h>
+#include <linux/delay.h>
+#include <linux/gpio/consumer.h>
+#include <linux/i2c.h>
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <linux/kstrtox.h>
+#include <linux/linear_range.h>
+#include <linux/module.h>
+#include <linux/mod_devicetable.h>
+#include <linux/mutex.h>
+#include <linux/of.h>
+#include <linux/power_supply.h>
+#include <linux/regmap.h>
+#include <linux/regulator/driver.h>
+#include <linux/units.h>
+#include <linux/sysfs.h>
+
+#define RT9467_REG_CORE_CTRL0 0x00
+#define RT9467_REG_CHG_CTRL1 0x01
+#define RT9467_REG_CHG_CTRL2 0x02
+#define RT9467_REG_CHG_CTRL3 0x03
+#define RT9467_REG_CHG_CTRL4 0x04
+#define RT9467_REG_CHG_CTRL5 0x05
+#define RT9467_REG_CHG_CTRL6 0x06
+#define RT9467_REG_CHG_CTRL7 0x07
+#define RT9467_REG_CHG_CTRL8 0x08
+#define RT9467_REG_CHG_CTRL9 0x09
+#define RT9467_REG_CHG_CTRL10 0x0A
+#define RT9467_REG_CHG_CTRL12 0x0C
+#define RT9467_REG_CHG_CTRL13 0x0D
+#define RT9467_REG_CHG_CTRL14 0x0E
+#define RT9467_REG_CHG_ADC 0x11
+#define RT9467_REG_CHG_DPDM1 0x12
+#define RT9467_REG_CHG_DPDM2 0x13
+#define RT9467_REG_DEVICE_ID 0x40
+#define RT9467_REG_CHG_STAT 0x42
+#define RT9467_REG_ADC_DATA_H 0x44
+#define RT9467_REG_CHG_STATC 0x50
+#define RT9467_REG_CHG_IRQ1 0x53
+#define RT9467_REG_CHG_STATC_CTRL 0x60
+#define RT9467_REG_CHG_IRQ1_CTRL 0x63
+
+#define RT9467_MASK_PWR_RDY BIT(7)
+#define RT9467_MASK_MIVR_STAT BIT(6)
+#define RT9467_MASK_OTG_CSEL GENMASK(2, 0)
+#define RT9467_MASK_OTG_VSEL GENMASK(7, 2)
+#define RT9467_MASK_OTG_EN BIT(0)
+#define RT9467_MASK_ADC_IN_SEL GENMASK(7, 4)
+#define RT9467_MASK_ADC_START BIT(0)
+
+#define RT9467_NUM_IRQ_REGS 4
+#define RT9467_ICHG_MIN_uA 100000
+#define RT9467_ICHG_MAX_uA 5000000
+#define RT9467_CV_MAX_uV 4710000
+#define RT9467_OTG_MIN_uV 4425000
+#define RT9467_OTG_MAX_uV 5825000
+#define RT9467_OTG_STEP_uV 25000
+#define RT9467_NUM_VOTG (RT9467_OTG_MAX_uV - RT9467_OTG_MIN_uV + 1)
+#define RT9467_AICLVTH_GAP_uV 200000
+#define RT9467_ADCCONV_TIME_MS 35
+
+#define RT9466_VID 0x8
+#define RT9467_VID 0x9
+
+/* IRQ number */
+#define RT9467_IRQ_TS_STATC 0
+#define RT9467_IRQ_CHG_FAULT 1
+#define RT9467_IRQ_CHG_STATC 2
+#define RT9467_IRQ_CHG_TMR 3
+#define RT9467_IRQ_CHG_BATABS 4
+#define RT9467_IRQ_CHG_ADPBAD 5
+#define RT9467_IRQ_CHG_RVP 6
+#define RT9467_IRQ_OTP 7
+
+#define RT9467_IRQ_CHG_AICLM 8
+#define RT9467_IRQ_CHG_ICHGM 9
+#define RT9467_IRQ_WDTMR 11
+#define RT9467_IRQ_SSFINISH 12
+#define RT9467_IRQ_CHG_RECHG 13
+#define RT9467_IRQ_CHG_TERM 14
+#define RT9467_IRQ_CHG_IEOC 15
+
+#define RT9467_IRQ_ADC_DONE 16
+#define RT9467_IRQ_PUMPX_DONE 17
+#define RT9467_IRQ_BST_BATUV 21
+#define RT9467_IRQ_BST_MIDOV 22
+#define RT9467_IRQ_BST_OLP 23
+
+#define RT9467_IRQ_ATTACH 24
+#define RT9467_IRQ_DETACH 25
+#define RT9467_IRQ_HVDCP_DET 29
+#define RT9467_IRQ_CHGDET 30
+#define RT9467_IRQ_DCDT 31
+
+enum rt9467_fields {
+ /* RT9467_REG_CORE_CTRL0 */
+ F_RST = 0,
+ /* RT9467_REG_CHG_CTRL1 */
+ F_HZ, F_OTG_PIN_EN, F_OPA_MODE,
+ /* RT9467_REG_CHG_CTRL2 */
+ F_SHIP_MODE, F_TE, F_IINLMTSEL, F_CFO_EN, F_CHG_EN,
+ /* RT9467_REG_CHG_CTRL3 */
+ F_IAICR, F_ILIM_EN,
+ /* RT9467_REG_CHG_CTRL4 */
+ F_VOREG,
+ /* RT9467_REG_CHG_CTRL6 */
+ F_VMIVR,
+ /* RT9467_REG_CHG_CTRL7 */
+ F_ICHG,
+ /* RT9467_REG_CHG_CTRL8 */
+ F_IPREC,
+ /* RT9467_REG_CHG_CTRL9 */
+ F_IEOC,
+ /* RT9467_REG_CHG_CTRL12 */
+ F_WT_FC,
+ /* RT9467_REG_CHG_CTRL13 */
+ F_OCP,
+ /* RT9467_REG_CHG_CTRL14 */
+ F_AICL_MEAS, F_AICL_VTH,
+ /* RT9467_REG_CHG_DPDM1 */
+ F_USBCHGEN,
+ /* RT9467_REG_CHG_DPDM2 */
+ F_USB_STATUS,
+ /* RT9467_REG_DEVICE_ID */
+ F_VENDOR,
+ /* RT9467_REG_CHG_STAT */
+ F_CHG_STAT,
+ /* RT9467_REG_CHG_STATC */
+ F_PWR_RDY, F_CHG_MIVR,
+ F_MAX_FIELDS
+};
+
+static const struct regmap_irq rt9467_irqs[] = {
+ REGMAP_IRQ_REG_LINE(RT9467_IRQ_TS_STATC, 8),
+ REGMAP_IRQ_REG_LINE(RT9467_IRQ_CHG_FAULT, 8),
+ REGMAP_IRQ_REG_LINE(RT9467_IRQ_CHG_STATC, 8),
+ REGMAP_IRQ_REG_LINE(RT9467_IRQ_CHG_TMR, 8),
+ REGMAP_IRQ_REG_LINE(RT9467_IRQ_CHG_BATABS, 8),
+ REGMAP_IRQ_REG_LINE(RT9467_IRQ_CHG_ADPBAD, 8),
+ REGMAP_IRQ_REG_LINE(RT9467_IRQ_CHG_RVP, 8),
+ REGMAP_IRQ_REG_LINE(RT9467_IRQ_OTP, 8),
+ REGMAP_IRQ_REG_LINE(RT9467_IRQ_CHG_AICLM, 8),
+ REGMAP_IRQ_REG_LINE(RT9467_IRQ_CHG_ICHGM, 8),
+ REGMAP_IRQ_REG_LINE(RT9467_IRQ_WDTMR, 8),
+ REGMAP_IRQ_REG_LINE(RT9467_IRQ_SSFINISH, 8),
+ REGMAP_IRQ_REG_LINE(RT9467_IRQ_CHG_RECHG, 8),
+ REGMAP_IRQ_REG_LINE(RT9467_IRQ_CHG_TERM, 8),
+ REGMAP_IRQ_REG_LINE(RT9467_IRQ_CHG_IEOC, 8),
+ REGMAP_IRQ_REG_LINE(RT9467_IRQ_ADC_DONE, 8),
+ REGMAP_IRQ_REG_LINE(RT9467_IRQ_PUMPX_DONE, 8),
+ REGMAP_IRQ_REG_LINE(RT9467_IRQ_BST_BATUV, 8),
+ REGMAP_IRQ_REG_LINE(RT9467_IRQ_BST_MIDOV, 8),
+ REGMAP_IRQ_REG_LINE(RT9467_IRQ_BST_OLP, 8),
+ REGMAP_IRQ_REG_LINE(RT9467_IRQ_ATTACH, 8),
+ REGMAP_IRQ_REG_LINE(RT9467_IRQ_DETACH, 8),
+ REGMAP_IRQ_REG_LINE(RT9467_IRQ_HVDCP_DET, 8),
+ REGMAP_IRQ_REG_LINE(RT9467_IRQ_CHGDET, 8),
+ REGMAP_IRQ_REG_LINE(RT9467_IRQ_DCDT, 8)
+};
+
+static const struct regmap_irq_chip rt9467_irq_chip = {
+ .name = "rt9467-irqs",
+ .status_base = RT9467_REG_CHG_IRQ1,
+ .mask_base = RT9467_REG_CHG_IRQ1_CTRL,
+ .num_regs = RT9467_NUM_IRQ_REGS,
+ .irqs = rt9467_irqs,
+ .num_irqs = ARRAY_SIZE(rt9467_irqs),
+};
+
+enum rt9467_ranges {
+ RT9467_RANGE_IAICR = 0,
+ RT9467_RANGE_VOREG,
+ RT9467_RANGE_VMIVR,
+ RT9467_RANGE_ICHG,
+ RT9467_RANGE_IPREC,
+ RT9467_RANGE_IEOC,
+ RT9467_RANGE_AICL_VTH,
+ RT9467_RANGES_MAX
+};
+
+static const struct linear_range rt9467_ranges[RT9467_RANGES_MAX] = {
+ LINEAR_RANGE_IDX(RT9467_RANGE_IAICR, 100000, 0x0, 0x3F, 50000),
+ LINEAR_RANGE_IDX(RT9467_RANGE_VOREG, 3900000, 0x0, 0x51, 10000),
+ LINEAR_RANGE_IDX(RT9467_RANGE_VMIVR, 3900000, 0x0, 0x5F, 100000),
+ LINEAR_RANGE_IDX(RT9467_RANGE_ICHG, 900000, 0x08, 0x31, 100000),
+ LINEAR_RANGE_IDX(RT9467_RANGE_IPREC, 100000, 0x0, 0x0F, 50000),
+ LINEAR_RANGE_IDX(RT9467_RANGE_IEOC, 100000, 0x0, 0x0F, 50000),
+ LINEAR_RANGE_IDX(RT9467_RANGE_AICL_VTH, 4100000, 0x0, 0x7, 100000),
+};
+
+static const struct reg_field rt9467_chg_fields[] = {
+ [F_RST] = REG_FIELD(RT9467_REG_CORE_CTRL0, 7, 7),
+ [F_HZ] = REG_FIELD(RT9467_REG_CHG_CTRL1, 2, 2),
+ [F_OTG_PIN_EN] = REG_FIELD(RT9467_REG_CHG_CTRL1, 1, 1),
+ [F_OPA_MODE] = REG_FIELD(RT9467_REG_CHG_CTRL1, 0, 0),
+ [F_SHIP_MODE] = REG_FIELD(RT9467_REG_CHG_CTRL2, 7, 7),
+ [F_TE] = REG_FIELD(RT9467_REG_CHG_CTRL2, 4, 4),
+ [F_IINLMTSEL] = REG_FIELD(RT9467_REG_CHG_CTRL2, 2, 3),
+ [F_CFO_EN] = REG_FIELD(RT9467_REG_CHG_CTRL2, 1, 1),
+ [F_CHG_EN] = REG_FIELD(RT9467_REG_CHG_CTRL2, 0, 0),
+ [F_IAICR] = REG_FIELD(RT9467_REG_CHG_CTRL3, 2, 7),
+ [F_ILIM_EN] = REG_FIELD(RT9467_REG_CHG_CTRL3, 0, 0),
+ [F_VOREG] = REG_FIELD(RT9467_REG_CHG_CTRL4, 1, 7),
+ [F_VMIVR] = REG_FIELD(RT9467_REG_CHG_CTRL6, 1, 7),
+ [F_ICHG] = REG_FIELD(RT9467_REG_CHG_CTRL7, 2, 7),
+ [F_IPREC] = REG_FIELD(RT9467_REG_CHG_CTRL8, 0, 3),
+ [F_IEOC] = REG_FIELD(RT9467_REG_CHG_CTRL9, 4, 7),
+ [F_WT_FC] = REG_FIELD(RT9467_REG_CHG_CTRL12, 5, 7),
+ [F_OCP] = REG_FIELD(RT9467_REG_CHG_CTRL13, 2, 2),
+ [F_AICL_MEAS] = REG_FIELD(RT9467_REG_CHG_CTRL14, 7, 7),
+ [F_AICL_VTH] = REG_FIELD(RT9467_REG_CHG_CTRL14, 0, 2),
+ [F_USBCHGEN] = REG_FIELD(RT9467_REG_CHG_DPDM1, 7, 7),
+ [F_USB_STATUS] = REG_FIELD(RT9467_REG_CHG_DPDM2, 0, 2),
+ [F_VENDOR] = REG_FIELD(RT9467_REG_DEVICE_ID, 4, 7),
+ [F_CHG_STAT] = REG_FIELD(RT9467_REG_CHG_STAT, 6, 7),
+ [F_PWR_RDY] = REG_FIELD(RT9467_REG_CHG_STATC, 7, 7),
+ [F_CHG_MIVR] = REG_FIELD(RT9467_REG_CHG_STATC, 6, 6),
+};
+
+enum {
+ RT9467_STAT_READY = 0,
+ RT9467_STAT_PROGRESS,
+ RT9467_STAT_CHARGE_DONE,
+ RT9467_STAT_FAULT
+};
+
+enum rt9467_adc_chan {
+ RT9467_ADC_VBUS_DIV5 = 0,
+ RT9467_ADC_VBUS_DIV2,
+ RT9467_ADC_VSYS,
+ RT9467_ADC_VBAT,
+ RT9467_ADC_TS_BAT,
+ RT9467_ADC_IBUS,
+ RT9467_ADC_IBAT,
+ RT9467_ADC_REGN,
+ RT9467_ADC_TEMP_JC
+};
+
+enum rt9467_chg_type {
+ RT9467_CHG_TYPE_NOVBUS = 0,
+ RT9467_CHG_TYPE_UNDER_GOING,
+ RT9467_CHG_TYPE_SDP,
+ RT9467_CHG_TYPE_SDPNSTD,
+ RT9467_CHG_TYPE_DCP,
+ RT9467_CHG_TYPE_CDP,
+ RT9467_CHG_TYPE_MAX
+};
+
+enum rt9467_iin_limit_sel {
+ RT9467_IINLMTSEL_3_2A = 0,
+ RT9467_IINLMTSEL_CHG_TYP,
+ RT9467_IINLMTSEL_AICR,
+ RT9467_IINLMTSEL_LOWER_LEVEL, /* lower of above three */
+};
+
+struct rt9467_chg_data {
+ struct device *dev;
+ struct regmap *regmap;
+ struct regmap_field *rm_field[F_MAX_FIELDS];
+ struct regmap_irq_chip_data *irq_chip_data;
+ struct power_supply *psy;
+ struct mutex adc_lock;
+ struct mutex attach_lock;
+ struct mutex ichg_ieoc_lock;
+ struct regulator_dev *rdev;
+ struct completion aicl_done;
+ enum power_supply_usb_type psy_usb_type;
+ unsigned int old_stat;
+ unsigned int vid;
+ int ichg_ua;
+ int ieoc_ua;
+};
+
+static int rt9467_otg_of_parse_cb(struct device_node *of,
+ const struct regulator_desc *desc,
+ struct regulator_config *cfg)
+{
+ struct rt9467_chg_data *data = cfg->driver_data;
+
+ cfg->ena_gpiod = fwnode_gpiod_get_index(of_fwnode_handle(of),
+ "enable", 0, GPIOD_OUT_LOW |
+ GPIOD_FLAGS_BIT_NONEXCLUSIVE,
+ desc->name);
+ if (IS_ERR(cfg->ena_gpiod)) {
+ cfg->ena_gpiod = NULL;
+ return 0;
+ }
+
+ return regmap_field_write(data->rm_field[F_OTG_PIN_EN], 1);
+}
+
+static const struct regulator_ops rt9467_otg_regulator_ops = {
+ .enable = regulator_enable_regmap,
+ .disable = regulator_disable_regmap,
+ .is_enabled = regulator_is_enabled_regmap,
+ .list_voltage = regulator_list_voltage_linear,
+ .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 rt9467_otg_microamp[] = {
+ 500000, 700000, 1100000, 1300000, 1800000, 2100000, 2400000, 3000000
+};
+
+static const struct regulator_desc rt9467_otg_desc = {
+ .name = "rt9476-usb-otg-vbus",
+ .of_match = "usb-otg-vbus-regulator",
+ .of_parse_cb = rt9467_otg_of_parse_cb,
+ .type = REGULATOR_VOLTAGE,
+ .owner = THIS_MODULE,
+ .min_uV = RT9467_OTG_MIN_uV,
+ .uV_step = RT9467_OTG_STEP_uV,
+ .n_voltages = RT9467_NUM_VOTG,
+ .curr_table = rt9467_otg_microamp,
+ .n_current_limits = ARRAY_SIZE(rt9467_otg_microamp),
+ .csel_reg = RT9467_REG_CHG_CTRL10,
+ .csel_mask = RT9467_MASK_OTG_CSEL,
+ .vsel_reg = RT9467_REG_CHG_CTRL5,
+ .vsel_mask = RT9467_MASK_OTG_VSEL,
+ .enable_reg = RT9467_REG_CHG_CTRL1,
+ .enable_mask = RT9467_MASK_OTG_EN,
+ .ops = &rt9467_otg_regulator_ops,
+};
+
+static int rt9467_register_otg_regulator(struct rt9467_chg_data *data)
+{
+ struct regulator_config cfg = {
+ .dev = data->dev,
+ .regmap = data->regmap,
+ .driver_data = data,
+ };
+
+ data->rdev = devm_regulator_register(data->dev, &rt9467_otg_desc, &cfg);
+ return PTR_ERR_OR_ZERO(data->rdev);
+}
+
+static int rt9467_get_value_from_ranges(struct rt9467_chg_data *data,
+ enum rt9467_fields field,
+ enum rt9467_ranges rsel,
+ int *value)
+{
+ const struct linear_range *range = rt9467_ranges + rsel;
+ unsigned int sel;
+ int ret;
+
+ ret = regmap_field_read(data->rm_field[field], &sel);
+ if (ret)
+ return ret;
+
+ return linear_range_get_value(range, sel, value);
+}
+
+static int rt9467_set_value_from_ranges(struct rt9467_chg_data *data,
+ enum rt9467_fields field,
+ enum rt9467_ranges rsel,
+ int value)
+{
+ const struct linear_range *range = rt9467_ranges + rsel;
+ unsigned int sel;
+ bool found;
+ int ret;
+
+ if (rsel == RT9467_RANGE_VMIVR) {
+ ret = linear_range_get_selector_high(range, value, &sel, &found);
+ if (ret)
+ value = range->max_sel;
+ } else {
+ linear_range_get_selector_within(range, value, &sel);
+ }
+
+ return regmap_field_write(data->rm_field[field], sel);
+}
+
+static int rt9467_get_adc_sel(enum rt9467_adc_chan chan, int *sel)
+{
+ switch (chan) {
+ case RT9467_ADC_VBUS_DIV5:
+ case RT9467_ADC_VBUS_DIV2:
+ case RT9467_ADC_VSYS:
+ case RT9467_ADC_VBAT:
+ *sel = chan + 1;
+ return 0;
+ case RT9467_ADC_TS_BAT:
+ *sel = chan + 2;
+ return 0;
+ case RT9467_ADC_IBUS:
+ case RT9467_ADC_IBAT:
+ *sel = chan + 3;
+ return 0;
+ case RT9467_ADC_REGN:
+ case RT9467_ADC_TEMP_JC:
+ *sel = chan + 4;
+ return 0;
+ default:
+ return -EINVAL;
+ }
+}
+
+static int rt9467_get_adc_raw_data(struct rt9467_chg_data *data,
+ enum rt9467_adc_chan chan, int *val)
+{
+ unsigned int adc_stat, reg_val, adc_sel;
+ __be16 chan_raw_data;
+ int ret;
+
+ mutex_lock(&data->adc_lock);
+
+ ret = rt9467_get_adc_sel(chan, &adc_sel);
+ if (ret)
+ goto adc_unlock;
+
+ ret = regmap_write(data->regmap, RT9467_REG_CHG_ADC, 0);
+ if (ret) {
+ dev_err(data->dev, "Failed to clear ADC enable\n");
+ goto adc_unlock;
+ }
+
+ reg_val = RT9467_MASK_ADC_START | FIELD_PREP(RT9467_MASK_ADC_IN_SEL, adc_sel);
+ ret = regmap_write(data->regmap, RT9467_REG_CHG_ADC, reg_val);
+ if (ret)
+ goto adc_unlock;
+
+ /* Minimum wait time for one channel processing */
+ msleep(RT9467_ADCCONV_TIME_MS);
+
+ ret = regmap_read_poll_timeout(data->regmap, RT9467_REG_CHG_ADC,
+ adc_stat,
+ !(adc_stat & RT9467_MASK_ADC_START),
+ MILLI, RT9467_ADCCONV_TIME_MS * MILLI);
+ if (ret) {
+ dev_err(data->dev, "Failed to wait ADC conversion, chan = %d\n", chan);
+ goto adc_unlock;
+ }
+
+ ret = regmap_raw_read(data->regmap, RT9467_REG_ADC_DATA_H,
+ &chan_raw_data, sizeof(chan_raw_data));
+ if (ret)
+ goto adc_unlock;
+
+ *val = be16_to_cpu(chan_raw_data);
+
+adc_unlock:
+ mutex_unlock(&data->adc_lock);
+ return ret;
+}
+
+static int rt9467_get_adc(struct rt9467_chg_data *data,
+ enum rt9467_adc_chan chan, int *val)
+{
+ unsigned int aicr_ua, ichg_ua;
+ int ret;
+
+ ret = rt9467_get_adc_raw_data(data, chan, val);
+ if (ret)
+ return ret;
+
+ switch (chan) {
+ case RT9467_ADC_VBUS_DIV5:
+ *val *= 25000;
+ return 0;
+ case RT9467_ADC_VBUS_DIV2:
+ *val *= 10000;
+ return 0;
+ case RT9467_ADC_VBAT:
+ case RT9467_ADC_VSYS:
+ case RT9467_ADC_REGN:
+ *val *= 5000;
+ return 0;
+ case RT9467_ADC_TS_BAT:
+ *val /= 400;
+ return 0;
+ case RT9467_ADC_IBUS:
+ /* UUG MOS turn-on ratio will affect the IBUS adc scale */
+ ret = rt9467_get_value_from_ranges(data, F_IAICR,
+ RT9467_RANGE_IAICR, &aicr_ua);
+ if (ret)
+ return ret;
+
+ *val *= aicr_ua < 400000 ? 29480 : 50000;
+ return 0;
+ case RT9467_ADC_IBAT:
+ /* PP MOS turn-on ratio will affect the ICHG adc scale */
+ ret = rt9467_get_value_from_ranges(data, F_ICHG,
+ RT9467_RANGE_ICHG, &ichg_ua);
+ if (ret)
+ return ret;
+
+ *val *= ichg_ua <= 400000 ? 28500 :
+ ichg_ua <= 800000 ? 31500 : 500000;
+ return 0;
+ case RT9467_ADC_TEMP_JC:
+ *val = ((*val * 2) - 40) * 10;
+ return 0;
+ default:
+ return -EINVAL;
+ }
+}
+
+static int rt9467_psy_get_status(struct rt9467_chg_data *data, int *state)
+{
+ unsigned int status;
+ int ret;
+
+ ret = regmap_field_read(data->rm_field[F_CHG_STAT], &status);
+ if (ret)
+ return ret;
+
+ switch (status) {
+ case RT9467_STAT_READY:
+ *state = POWER_SUPPLY_STATUS_NOT_CHARGING;
+ return 0;
+ case RT9467_STAT_PROGRESS:
+ *state = POWER_SUPPLY_STATUS_CHARGING;
+ return 0;
+ case RT9467_STAT_CHARGE_DONE:
+ *state = POWER_SUPPLY_STATUS_FULL;
+ return 0;
+ default:
+ *state = POWER_SUPPLY_STATUS_UNKNOWN;
+ return 0;
+ }
+}
+
+static int rt9467_psy_set_ichg(struct rt9467_chg_data *data, int microamp)
+{
+ int ret;
+
+ mutex_lock(&data->ichg_ieoc_lock);
+
+ if (microamp < 500000) {
+ dev_err(data->dev, "Minimum value must be 500mA\n");
+ microamp = 500000;
+ }
+
+ ret = rt9467_set_value_from_ranges(data, F_ICHG, RT9467_RANGE_ICHG, microamp);
+ if (ret)
+ goto out;
+
+ ret = rt9467_get_value_from_ranges(data, F_ICHG, RT9467_RANGE_ICHG,
+ &data->ichg_ua);
+ if (ret)
+ goto out;
+
+out:
+ mutex_unlock(&data->ichg_ieoc_lock);
+ return ret;
+}
+
+static int rt9467_run_aicl(struct rt9467_chg_data *data)
+{
+ unsigned int statc, aicl_vth;
+ int mivr_vth, aicr_get;
+ int ret = 0;
+
+
+ ret = regmap_read(data->regmap, RT9467_REG_CHG_STATC, &statc);
+ if (ret) {
+ dev_err(data->dev, "Failed to read status\n");
+ return ret;
+ }
+
+ if (!(statc & RT9467_MASK_PWR_RDY) || !(statc & RT9467_MASK_MIVR_STAT)) {
+ dev_info(data->dev, "Condition not matched %d\n", statc);
+ return 0;
+ }
+
+ ret = rt9467_get_value_from_ranges(data, F_VMIVR, RT9467_RANGE_VMIVR,
+ &mivr_vth);
+ if (ret) {
+ dev_err(data->dev, "Failed to get mivr\n");
+ return ret;
+ }
+
+ /* AICL_VTH = MIVR_VTH + 200mV */
+ aicl_vth = mivr_vth + RT9467_AICLVTH_GAP_uV;
+ ret = rt9467_set_value_from_ranges(data, F_AICL_VTH,
+ RT9467_RANGE_AICL_VTH, aicl_vth);
+
+ /* Trigger AICL function */
+ ret = regmap_field_write(data->rm_field[F_AICL_MEAS], 1);
+ if (ret) {
+ dev_err(data->dev, "Failed to set aicl measurement\n");
+ return ret;
+ }
+
+ reinit_completion(&data->aicl_done);
+ ret = wait_for_completion_timeout(&data->aicl_done, msecs_to_jiffies(3500));
+ if (ret)
+ return ret;
+
+ ret = rt9467_get_value_from_ranges(data, F_IAICR, RT9467_RANGE_IAICR, &aicr_get);
+ if (ret) {
+ dev_err(data->dev, "Failed to get aicr\n");
+ return ret;
+ }
+
+ dev_info(data->dev, "aicr get = %d uA\n", aicr_get);
+ return 0;
+}
+
+static int rt9467_psy_set_ieoc(struct rt9467_chg_data *data, int microamp)
+{
+ int ret;
+
+ mutex_lock(&data->ichg_ieoc_lock);
+
+ ret = rt9467_set_value_from_ranges(data, F_IEOC, RT9467_RANGE_IEOC, microamp);
+ if (ret)
+ goto out;
+
+ ret = rt9467_get_value_from_ranges(data, F_IEOC, RT9467_RANGE_IEOC, &data->ieoc_ua);
+ if (ret)
+ goto out;
+
+out:
+ mutex_unlock(&data->ichg_ieoc_lock);
+ return ret;
+}
+
+static const enum power_supply_usb_type rt9467_chg_usb_types[] = {
+ POWER_SUPPLY_USB_TYPE_UNKNOWN,
+ POWER_SUPPLY_USB_TYPE_SDP,
+ POWER_SUPPLY_USB_TYPE_DCP,
+ POWER_SUPPLY_USB_TYPE_CDP,
+};
+
+static const enum power_supply_property rt9467_chg_properties[] = {
+ POWER_SUPPLY_PROP_STATUS,
+ POWER_SUPPLY_PROP_ONLINE,
+ POWER_SUPPLY_PROP_CURRENT_MAX,
+ 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_USB_TYPE,
+ POWER_SUPPLY_PROP_PRECHARGE_CURRENT,
+ POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT,
+};
+
+static int rt9467_psy_get_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ struct rt9467_chg_data *data = power_supply_get_drvdata(psy);
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_STATUS:
+ return rt9467_psy_get_status(data, &val->intval);
+ case POWER_SUPPLY_PROP_ONLINE:
+ return regmap_field_read(data->rm_field[F_PWR_RDY], &val->intval);
+ case POWER_SUPPLY_PROP_CURRENT_MAX:
+ mutex_lock(&data->attach_lock);
+ if (data->psy_usb_type == POWER_SUPPLY_USB_TYPE_UNKNOWN ||
+ data->psy_usb_type == POWER_SUPPLY_USB_TYPE_SDP)
+ val->intval = 500000;
+ else
+ val->intval = 1500000;
+ mutex_unlock(&data->attach_lock);
+ return 0;
+ case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT:
+ mutex_lock(&data->ichg_ieoc_lock);
+ val->intval = data->ichg_ua;
+ mutex_unlock(&data->ichg_ieoc_lock);
+ return 0;
+ case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX:
+ val->intval = RT9467_ICHG_MAX_uA;
+ return 0;
+ case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE:
+ return rt9467_get_value_from_ranges(data, F_VOREG,
+ RT9467_RANGE_VOREG,
+ &val->intval);
+ case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX:
+ val->intval = RT9467_CV_MAX_uV;
+ return 0;
+ case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT:
+ return rt9467_get_value_from_ranges(data, F_IAICR,
+ RT9467_RANGE_IAICR,
+ &val->intval);
+ case POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT:
+ return rt9467_get_value_from_ranges(data, F_VMIVR,
+ RT9467_RANGE_VMIVR,
+ &val->intval);
+ case POWER_SUPPLY_PROP_USB_TYPE:
+ mutex_lock(&data->attach_lock);
+ val->intval = data->psy_usb_type;
+ mutex_unlock(&data->attach_lock);
+ return 0;
+ case POWER_SUPPLY_PROP_PRECHARGE_CURRENT:
+ return rt9467_get_value_from_ranges(data, F_IPREC,
+ RT9467_RANGE_IPREC,
+ &val->intval);
+ case POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT:
+ mutex_lock(&data->ichg_ieoc_lock);
+ val->intval = data->ieoc_ua;
+ mutex_unlock(&data->ichg_ieoc_lock);
+ return 0;
+ default:
+ return -ENODATA;
+ }
+}
+
+static int rt9467_psy_set_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ const union power_supply_propval *val)
+{
+ struct rt9467_chg_data *data = power_supply_get_drvdata(psy);
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_STATUS:
+ return regmap_field_write(data->rm_field[F_CHG_EN], val->intval);
+ case POWER_SUPPLY_PROP_ONLINE:
+ return regmap_field_write(data->rm_field[F_HZ], val->intval);
+ case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT:
+ return rt9467_psy_set_ichg(data, val->intval);
+ case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE:
+ return rt9467_set_value_from_ranges(data, F_VOREG,
+ RT9467_RANGE_VOREG, val->intval);
+ case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT:
+ if (val->intval == -1)
+ return rt9467_run_aicl(data);
+ else
+ return rt9467_set_value_from_ranges(data, F_IAICR,
+ RT9467_RANGE_IAICR,
+ val->intval);
+ case POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT:
+ return rt9467_set_value_from_ranges(data, F_VMIVR,
+ RT9467_RANGE_VMIVR, val->intval);
+ case POWER_SUPPLY_PROP_PRECHARGE_CURRENT:
+ return rt9467_set_value_from_ranges(data, F_IPREC,
+ RT9467_RANGE_IPREC, val->intval);
+ case POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT:
+ return rt9467_psy_set_ieoc(data, val->intval);
+ case POWER_SUPPLY_PROP_USB_TYPE:
+ return regmap_field_write(data->rm_field[F_USBCHGEN], val->intval);
+ default:
+ return -EINVAL;
+ }
+}
+
+static int rt9467_chg_prop_is_writeable(struct power_supply *psy,
+ enum power_supply_property psp)
+{
+ switch (psp) {
+ case POWER_SUPPLY_PROP_STATUS:
+ 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_CHARGE_TERM_CURRENT:
+ case POWER_SUPPLY_PROP_PRECHARGE_CURRENT:
+ case POWER_SUPPLY_PROP_USB_TYPE:
+ return 1;
+ default:
+ return 0;
+ }
+}
+
+static const struct power_supply_desc rt9467_chg_psy_desc = {
+ .name = "rt9467-charger",
+ .type = POWER_SUPPLY_TYPE_USB,
+ .usb_types = rt9467_chg_usb_types,
+ .num_usb_types = ARRAY_SIZE(rt9467_chg_usb_types),
+ .properties = rt9467_chg_properties,
+ .num_properties = ARRAY_SIZE(rt9467_chg_properties),
+ .property_is_writeable = rt9467_chg_prop_is_writeable,
+ .get_property = rt9467_psy_get_property,
+ .set_property = rt9467_psy_set_property,
+};
+
+static inline struct rt9467_chg_data *psy_device_to_chip(struct device *dev)
+{
+ return power_supply_get_drvdata(to_power_supply(dev));
+}
+
+static ssize_t sysoff_enable_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct rt9467_chg_data *data = psy_device_to_chip(dev);
+ unsigned int sysoff_enable;
+ int ret;
+
+ ret = regmap_field_read(data->rm_field[F_SHIP_MODE], &sysoff_enable);
+ if (ret)
+ return ret;
+
+ return sysfs_emit(buf, "%d\n", sysoff_enable);
+}
+
+static ssize_t sysoff_enable_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct rt9467_chg_data *data = psy_device_to_chip(dev);
+ unsigned int tmp;
+ int ret;
+
+ ret = kstrtouint(buf, 10, &tmp);
+ if (ret)
+ return ret;
+
+ ret = regmap_field_write(data->rm_field[F_SHIP_MODE], !!tmp);
+ if (ret)
+ return ret;
+
+ return count;
+}
+
+static DEVICE_ATTR_RW(sysoff_enable);
+
+static struct attribute *rt9467_sysfs_attrs[] = {
+ &dev_attr_sysoff_enable.attr,
+ NULL
+};
+
+ATTRIBUTE_GROUPS(rt9467_sysfs);
+
+static int rt9467_register_psy(struct rt9467_chg_data *data)
+{
+ struct power_supply_config cfg = {
+ .drv_data = data,
+ .of_node = dev_of_node(data->dev),
+ .attr_grp = rt9467_sysfs_groups,
+ };
+
+ data->psy = devm_power_supply_register(data->dev, &rt9467_chg_psy_desc,
+ &cfg);
+ return PTR_ERR_OR_ZERO(data->psy);
+}
+
+static int rt9467_mivr_handler(struct rt9467_chg_data *data)
+{
+ unsigned int mivr_act;
+ int ret, ibus_ma;
+
+ /*
+ * back-boost workaround
+ * If (mivr_active & ibus < 100mA), toggle cfo bit
+ */
+ ret = regmap_field_read(data->rm_field[F_CHG_MIVR], &mivr_act);
+ if (ret) {
+ dev_err(data->dev, "Failed to read MIVR stat\n");
+ return ret;
+ }
+
+ if (!mivr_act)
+ return 0;
+
+ ret = rt9467_get_adc(data, RT9467_ADC_IBUS, &ibus_ma);
+ if (ret) {
+ dev_err(data->dev, "Failed to get IBUS\n");
+ return ret;
+ }
+
+ if (ibus_ma < 100000) {
+ ret = regmap_field_write(data->rm_field[F_CFO_EN], 0);
+ ret |= regmap_field_write(data->rm_field[F_CFO_EN], 1);
+ if (ret)
+ dev_err(data->dev, "Failed to toggle cfo\n");
+ }
+
+ return ret;
+}
+
+static irqreturn_t rt9467_statc_handler(int irq, void *priv)
+{
+ struct rt9467_chg_data *data = priv;
+ unsigned int new_stat, evts = 0;
+ int ret;
+
+ ret = regmap_read(data->regmap, RT9467_REG_CHG_STATC, &new_stat);
+ if (ret) {
+ dev_err(data->dev, "Failed to read chg_statc\n");
+ return IRQ_NONE;
+ }
+
+ evts = data->old_stat ^ new_stat;
+ data->old_stat = new_stat;
+
+ if ((evts & new_stat) & RT9467_MASK_MIVR_STAT) {
+ ret = rt9467_mivr_handler(data);
+ if (ret)
+ dev_err(data->dev, "Failed to handle mivr stat\n");
+ }
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t rt9467_wdt_handler(int irq, void *priv)
+{
+ struct rt9467_chg_data *data = priv;
+ unsigned int dev_id;
+ int ret;
+
+ /* Any i2c communication can kick watchdog timer */
+ ret = regmap_read(data->regmap, RT9467_REG_DEVICE_ID, &dev_id);
+ if (ret) {
+ dev_err(data->dev, "Failed to kick wdt (%d)\n", ret);
+ return IRQ_NONE;
+ }
+
+ return IRQ_HANDLED;
+}
+
+static int rt9467_report_usb_state(struct rt9467_chg_data *data)
+{
+ unsigned int usb_stat, power_ready;
+ bool psy_changed = true;
+ int ret;
+
+ ret = regmap_field_read(data->rm_field[F_USB_STATUS], &usb_stat);
+ ret |= regmap_field_read(data->rm_field[F_PWR_RDY], &power_ready);
+ if (ret)
+ return ret;
+
+ if (!power_ready)
+ usb_stat = RT9467_CHG_TYPE_NOVBUS;
+
+ mutex_lock(&data->attach_lock);
+
+ switch (usb_stat) {
+ case RT9467_CHG_TYPE_NOVBUS:
+ data->psy_usb_type = POWER_SUPPLY_USB_TYPE_UNKNOWN;
+ break;
+ case RT9467_CHG_TYPE_SDP:
+ data->psy_usb_type = POWER_SUPPLY_USB_TYPE_SDP;
+ break;
+ case RT9467_CHG_TYPE_SDPNSTD:
+ data->psy_usb_type = POWER_SUPPLY_USB_TYPE_DCP;
+ break;
+ case RT9467_CHG_TYPE_DCP:
+ data->psy_usb_type = POWER_SUPPLY_USB_TYPE_DCP;
+ break;
+ case RT9467_CHG_TYPE_CDP:
+ data->psy_usb_type = POWER_SUPPLY_USB_TYPE_CDP;
+ break;
+ case RT9467_CHG_TYPE_UNDER_GOING:
+ default:
+ psy_changed = false;
+ break;
+ }
+
+ mutex_unlock(&data->attach_lock);
+
+ if (psy_changed)
+ power_supply_changed(data->psy);
+
+ return 0;
+}
+
+static irqreturn_t rt9467_usb_state_handler(int irq, void *priv)
+{
+ struct rt9467_chg_data *data = priv;
+ int ret;
+
+ ret = rt9467_report_usb_state(data);
+ if (ret) {
+ dev_err(data->dev, "Failed to report attache type (%d)\n", ret);
+ return IRQ_NONE;
+ }
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t rt9467_aiclmeas_handler(int irq, void *priv)
+{
+ struct rt9467_chg_data *data = priv;
+
+ complete(&data->aicl_done);
+ return IRQ_HANDLED;
+}
+
+#define RT9467_IRQ_DESC(_name, _handler_func, _hwirq) \
+{ \
+ .name = #_name, \
+ .handler = rt9467_##_handler_func##_handler, \
+ .hwirq = _hwirq, \
+}
+
+static int rt9467_request_interrupt(struct rt9467_chg_data *data)
+{
+ struct device *dev = data->dev;
+ static const struct {
+ const char *name;
+ int hwirq;
+ irq_handler_t handler;
+ } rt9467_exclusive_irqs[] = {
+ RT9467_IRQ_DESC(statc, statc, RT9467_IRQ_TS_STATC),
+ RT9467_IRQ_DESC(wdt, wdt, RT9467_IRQ_WDTMR),
+ RT9467_IRQ_DESC(attach, usb_state, RT9467_IRQ_ATTACH),
+ RT9467_IRQ_DESC(detach, usb_state, RT9467_IRQ_DETACH),
+ RT9467_IRQ_DESC(aiclmeas, aiclmeas, RT9467_IRQ_CHG_AICLM),
+ }, rt9466_exclusive_irqs[] = {
+ RT9467_IRQ_DESC(statc, statc, RT9467_IRQ_TS_STATC),
+ RT9467_IRQ_DESC(wdt, wdt, RT9467_IRQ_WDTMR),
+ RT9467_IRQ_DESC(aiclmeas, aiclmeas, RT9467_IRQ_CHG_AICLM),
+ }, *chg_irqs;
+ int num_chg_irqs, i, virq, ret;
+
+ if (data->vid == RT9466_VID) {
+ chg_irqs = rt9466_exclusive_irqs;
+ num_chg_irqs = ARRAY_SIZE(rt9466_exclusive_irqs);
+ } else {
+ chg_irqs = rt9467_exclusive_irqs;
+ num_chg_irqs = ARRAY_SIZE(rt9467_exclusive_irqs);
+ }
+
+ for (i = 0; i < num_chg_irqs; i++) {
+ virq = regmap_irq_get_virq(data->irq_chip_data, chg_irqs[i].hwirq);
+ if (virq <= 0)
+ return dev_err_probe(dev, virq, "Failed to get (%s) irq\n",
+ chg_irqs[i].name);
+
+ ret = devm_request_threaded_irq(dev, virq, NULL, chg_irqs[i].handler,
+ IRQF_ONESHOT, chg_irqs[i].name, data);
+ if (ret)
+ return dev_err_probe(dev, ret, "Failed to request (%s) irq\n",
+ chg_irqs[i].name);
+ }
+
+ return 0;
+}
+
+static int rt9467_do_charger_init(struct rt9467_chg_data *data)
+{
+ struct device *dev = data->dev;
+ int ret;
+
+ ret = regmap_write(data->regmap, RT9467_REG_CHG_ADC, 0);
+ if (ret)
+ return dev_err_probe(dev, ret, "Failed to reset ADC\n");
+
+ ret = rt9467_get_value_from_ranges(data, F_ICHG, RT9467_RANGE_ICHG,
+ &data->ichg_ua);
+ ret |= rt9467_get_value_from_ranges(data, F_IEOC, RT9467_RANGE_IEOC,
+ &data->ieoc_ua);
+ if (ret)
+ return dev_err_probe(dev, ret, "Failed to init ichg/ieoc value\n");
+
+ ret = regmap_update_bits(data->regmap, RT9467_REG_CHG_STATC_CTRL,
+ RT9467_MASK_PWR_RDY | RT9467_MASK_MIVR_STAT, 0);
+ if (ret)
+ return dev_err_probe(dev, ret, "Failed to make statc unmask\n");
+
+ /* Select IINLMTSEL to use AICR */
+ ret = regmap_field_write(data->rm_field[F_IINLMTSEL],
+ RT9467_IINLMTSEL_AICR);
+ if (ret)
+ return dev_err_probe(dev, ret, "Failed to set iinlmtsel to AICR\n");
+
+ /* Wait for AICR Rampping */
+ msleep(150);
+
+ /* Disable hardware ILIM */
+ ret = regmap_field_write(data->rm_field[F_ILIM_EN], 0);
+ if (ret)
+ return dev_err_probe(dev, ret, "Failed to disable hardware ILIM\n");
+
+ /* Set inductor OCP to high level */
+ ret = regmap_field_write(data->rm_field[F_OCP], 1);
+ if (ret)
+ return dev_err_probe(dev, ret, "Failed to set higher inductor OCP level\n");
+
+ /* Set charge termination default enable */
+ ret = regmap_field_write(data->rm_field[F_TE], 1);
+ if (ret)
+ return dev_err_probe(dev, ret, "Failed to set TE=1\n");
+
+ /* Set 12hrs fast charger timer */
+ ret = regmap_field_write(data->rm_field[F_WT_FC], 4);
+ if (ret)
+ return dev_err_probe(dev, ret, "Failed to set WT_FC\n");
+
+ /* Toggle BC12 function */
+ ret = regmap_field_write(data->rm_field[F_USBCHGEN], 0);
+ if (ret)
+ return dev_err_probe(dev, ret, "Failed to disable BC12\n");
+
+ return regmap_field_write(data->rm_field[F_USBCHGEN], 1);
+}
+
+static bool rt9467_is_accessible_reg(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case 0x00 ... 0x1A:
+ case 0x20 ... 0x38:
+ case 0x40 ... 0x49:
+ case 0x50 ... 0x57:
+ case 0x60 ... 0x67:
+ case 0x70 ... 0x79:
+ case 0x82 ... 0x85:
+ return true;
+ default:
+ return false;
+ }
+}
+
+static const struct regmap_config rt9467_regmap_config = {
+ .reg_bits = 8,
+ .val_bits = 8,
+ .max_register = 0x85,
+ .writeable_reg = rt9467_is_accessible_reg,
+ .readable_reg = rt9467_is_accessible_reg,
+};
+
+static int rt9467_check_vendor_info(struct rt9467_chg_data *data)
+{
+ unsigned int vid;
+ int ret;
+
+ ret = regmap_field_read(data->rm_field[F_VENDOR], &vid);
+ if (ret) {
+ dev_err(data->dev, "Failed to get vid\n");
+ return ret;
+ }
+
+ if ((vid != RT9466_VID) && (vid != RT9467_VID))
+ return dev_err_probe(data->dev, -ENODEV,
+ "VID not correct [0x%02X]\n", vid);
+
+ data->vid = vid;
+ return 0;
+}
+
+static int rt9467_reset_chip(struct rt9467_chg_data *data)
+{
+ int ret;
+
+ /* Disable HZ before reset chip */
+ ret = regmap_field_write(data->rm_field[F_HZ], 0);
+ if (ret)
+ return ret;
+
+ return regmap_field_write(data->rm_field[F_RST], 1);
+}
+
+static void rt9467_chg_destroy_adc_lock(void *data)
+{
+ struct mutex *adc_lock = data;
+
+ mutex_destroy(adc_lock);
+}
+
+static void rt9467_chg_destroy_attach_lock(void *data)
+{
+ struct mutex *attach_lock = data;
+
+ mutex_destroy(attach_lock);
+}
+
+static void rt9467_chg_destroy_ichg_ieoc_lock(void *data)
+{
+ struct mutex *ichg_ieoc_lock = data;
+
+ mutex_destroy(ichg_ieoc_lock);
+}
+
+static void rt9467_chg_complete_aicl_done(void *data)
+{
+ struct completion *aicl_done = data;
+
+ complete(aicl_done);
+}
+
+static int rt9467_charger_probe(struct i2c_client *i2c)
+{
+ struct device *dev = &i2c->dev;
+ struct rt9467_chg_data *data;
+ struct gpio_desc *ceb_gpio;
+ int ret;
+
+ data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
+ if (!data)
+ return -ENOMEM;
+
+ data->dev = &i2c->dev;
+ i2c_set_clientdata(i2c, data);
+
+ /* Default pull charge enable gpio to make 'CHG_EN' by SW control only */
+ ceb_gpio = devm_gpiod_get_optional(dev, "charge-enable", GPIOD_OUT_LOW);
+ if (IS_ERR(ceb_gpio))
+ return dev_err_probe(dev, PTR_ERR(ceb_gpio),
+ "Failed to config charge enable gpio\n");
+
+ data->regmap = devm_regmap_init_i2c(i2c, &rt9467_regmap_config);
+ if (IS_ERR(data->regmap))
+ return dev_err_probe(dev, PTR_ERR(data->regmap),
+ "Failed to init regmap\n");
+
+ ret = devm_regmap_field_bulk_alloc(dev, data->regmap,
+ data->rm_field, rt9467_chg_fields,
+ ARRAY_SIZE(rt9467_chg_fields));
+ if (ret)
+ return dev_err_probe(dev, ret, "Failed to alloc regmap fields\n");
+
+ ret = rt9467_check_vendor_info(data);
+ if (ret)
+ return dev_err_probe(dev, ret, "Failed to check vendor info");
+
+ ret = rt9467_reset_chip(data);
+ if (ret)
+ return dev_err_probe(dev, ret, "Failed to reset chip\n");
+
+ ret = devm_regmap_add_irq_chip(dev, data->regmap, i2c->irq,
+ IRQF_TRIGGER_LOW | IRQF_ONESHOT, 0,
+ &rt9467_irq_chip, &data->irq_chip_data);
+ if (ret)
+ return dev_err_probe(dev, ret, "Failed to add irq chip\n");
+
+ mutex_init(&data->adc_lock);
+ ret = devm_add_action_or_reset(dev, rt9467_chg_destroy_adc_lock,
+ &data->adc_lock);
+ if (ret)
+ return dev_err_probe(dev, ret, "Failed to init ADC lock\n");
+
+ mutex_init(&data->attach_lock);
+ ret = devm_add_action_or_reset(dev, rt9467_chg_destroy_attach_lock,
+ &data->attach_lock);
+ if (ret)
+ return dev_err_probe(dev, ret, "Failed to init attach lock\n");
+
+ mutex_init(&data->ichg_ieoc_lock);
+ ret = devm_add_action_or_reset(dev, rt9467_chg_destroy_ichg_ieoc_lock,
+ &data->ichg_ieoc_lock);
+ if (ret)
+ return dev_err_probe(dev, ret, "Failed to init ICHG/IEOC lock\n");
+
+ init_completion(&data->aicl_done);
+ ret = devm_add_action_or_reset(dev, rt9467_chg_complete_aicl_done,
+ &data->aicl_done);
+ if (ret)
+ return dev_err_probe(dev, ret, "Failed to init AICL done completion\n");
+
+ ret = rt9467_do_charger_init(data);
+ if (ret)
+ return ret;
+
+ ret = rt9467_register_otg_regulator(data);
+ if (ret)
+ return ret;
+
+ ret = rt9467_register_psy(data);
+ if (ret)
+ return ret;
+
+ return rt9467_request_interrupt(data);
+}
+
+static const struct of_device_id rt9467_charger_of_match_table[] = {
+ { .compatible = "richtek,rt9467", },
+ {}
+};
+MODULE_DEVICE_TABLE(of, rt9467_charger_of_match_table);
+
+static struct i2c_driver rt9467_charger_driver = {
+ .driver = {
+ .name = "rt9467-charger",
+ .of_match_table = rt9467_charger_of_match_table,
+ },
+ .probe_new = rt9467_charger_probe,
+};
+module_i2c_driver(rt9467_charger_driver);
+
+MODULE_DESCRIPTION("Richtek RT9467 Charger Driver");
+MODULE_AUTHOR("ChiYuan Huang <cy_huang@xxxxxxxxxxx>");
+MODULE_AUTHOR("ChiaEn Wu <chiaen_wu@xxxxxxxxxxx>");
+MODULE_LICENSE("GPL");
--
2.25.1