--- /dev/null
+What: /sys/class/power_supply/rt9467-*/sysoff_enable
+Date: Feb 2023
+KernelVersion: 6.3
+Contact: ChiaEn Wu <chiaen_wu@richtek.com>
+Description:
+ This entry allows enabling the sysoff mode of rt9467 charger
+ devices.
+ If enabled and the input is removed, the internal battery FET
+ is turned off to reduce the leakage from the BAT pin. See
+ device datasheet for details. It's commonly used when the
+ product enter shipping stage. After entering shipping mode,
+ only 'VBUS' or 'Power key" pressed can make it leave this mode.
+ 'Disable' also can help to leave it, but it's more like to
+ abort the action before the device really enter shipping mode.
+
+ Access: Read, Write
+ Valid values:
+ - 1: enabled
+ - 0: disabled
--- /dev/null
+What: /sys/class/power_supply/rt9471-*/sysoff_enable
+Date: Feb 2023
+KernelVersion: 6.3
+Contact: ChiYuan Huang <cy_huang@richtek.com>
+Description:
+ This entry allows enabling the sysoff mode of rt9471 charger devices.
+ If enabled and the input is removed, the internal battery FET is turned
+ off to reduce the leakage from the BAT pin. See device datasheet for details.
+ It's commonly used when the product enter shipping stage. After entering
+ shipping mode, only 'VBUS' or 'Power key" pressed can make it leave this
+ mode. 'Disable' also can help to leave it, but it's more like to abort
+ the action before the device really enter shipping mode.
+
+ Access: Read, Write
+ Valid values:
+ - 1: enabled
+ - 0: disabled
+
+What: /sys/class/power_supply/rt9471-*/port_detect_enable
+Date: Feb 2023
+KernelVersion: 6.3
+Contact: ChiYuan Huang <cy_huang@richtek.com>
+Description:
+ This entry allows enabling the USB BC12 port detect function of rt9471 charger
+ devices. If enabled and VBUS is inserted, device will start to do the BC12
+ port detect and report the usb port type when port detect is done. See
+ datasheet for details. Normally controlled when TypeC/USBPD port integrated.
+
+ Access: Read, Write
+ Valid values:
+ - 1: enabled
+ - 0: disabled
$ref: /schemas/types.yaml#/definitions/uint32
description: The reset value written to the reboot register (32 bit access).
+ priority:
+ default: 192
+
required:
- compatible
- offset
additionalProperties: false
allOf:
+ - $ref: restart-handler.yaml#
- if:
not:
required:
properties:
compatible:
- const: qcom,pm8941-coincell
+ oneOf:
+ - items:
+ - enum:
+ - qcom,pm8998-coincell
+ - const: qcom,pm8941-coincell
+
+ - const: qcom,pm8941-coincell
reg:
maxItems: 1
qcom,rset-ohms:
- description: resistance (in ohms) for current-limiting resistor
+ description: |
+ Resistance (in ohms) for current-limiting resistor. If unspecified,
+ inherit the previous configuration (e.g. from bootloader or hardware
+ default value).
enum: [ 800, 1200, 1700, 2100 ]
qcom,vset-millivolts:
$ref: /schemas/types.yaml#/definitions/uint32
- description: voltage (in millivolts) to apply for charging
+ description: |
+ Voltage (in millivolts) to apply for charging. If unspecified, inherit
+ the previous configuration (e.g. from bootloader or hardware default
+ value).
enum: [ 2500, 3000, 3100, 3200 ]
qcom,charger-disable:
required:
- compatible
- reg
- - qcom,rset-ohms
- - qcom,vset-millivolts
additionalProperties: false
--- /dev/null
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/power/supply/richtek,rt9467-charger.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Richtek RT9467 Switching Battery Charger with Power Path Management
+
+maintainers:
+ - ChiYuan Huang <cy_huang@richtek.com>
+ - ChiaEn Wu <chiaen_wu@richtek.com>
+
+description: |
+ 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.
+
+ Datasheet is available at
+ https://www.richtek.com/assets/product_file/RT9467/DS9467-01.pdf
+
+properties:
+ compatible:
+ const: richtek,rt9467-charger
+
+ reg:
+ maxItems: 1
+
+ wakeup-source: true
+
+ interrupts:
+ maxItems: 1
+
+ charge-enable-gpios:
+ description: GPIO is used to turn on and off charging.
+ maxItems: 1
+
+ usb-otg-vbus-regulator:
+ type: object
+ description: OTG boost regulator.
+ unevaluatedProperties: false
+ $ref: /schemas/regulator/regulator.yaml#
+
+ properties:
+ enable-gpios: true
+
+required:
+ - compatible
+ - reg
+ - wakeup-source
+ - interrupts
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/interrupt-controller/irq.h>
+ #include <dt-bindings/gpio/gpio.h>
+ i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ charger@5b {
+ compatible = "richtek,rt9467-charger";
+ reg = <0x5b>;
+ wakeup-source;
+ interrupts-extended = <&gpio_intc 32 IRQ_TYPE_LEVEL_LOW>;
+ charge-enable-gpios = <&gpio26 1 GPIO_ACTIVE_LOW>;
+
+ rt9467_otg_vbus: usb-otg-vbus-regulator {
+ regulator-name = "rt9467-usb-otg-vbus";
+ regulator-min-microvolt = <4425000>;
+ regulator-max-microvolt = <5825000>;
+ regulator-min-microamp = <500000>;
+ regulator-max-microamp = <3000000>;
+ };
+ };
+ };
--- /dev/null
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/power/supply/richtek,rt9471.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Richtek RT9471 3A Single Cell Switching Battery charger
+
+maintainers:
+ - Alina Yu <alina_yu@richtek.com>
+ - ChiYuan Huang <cy_huang@richtek.com>
+
+description: |
+ RT9471 is a switch-mode single cell Li-Ion/Li-Polymer battery charger for
+ portable applications. It supports USB BC1.2 port detection, current and
+ voltage regulations in both charging and boost mode.
+
+ Datasheet is available at
+ https://www.richtek.com/assets/product_file/RT9471=RT9471D/DS9471D-02.pdf
+
+properties:
+ compatible:
+ const: richtek,rt9471
+
+ reg:
+ maxItems: 1
+
+ charge-enable-gpios:
+ description: GPIO used to turn on and off charging.
+ maxItems: 1
+
+ wakeup-source: true
+
+ interrupts:
+ maxItems: 1
+
+ usb-otg-vbus-regulator:
+ type: object
+ $ref: /schemas/regulator/regulator.yaml#
+ unevaluatedProperties: false
+
+required:
+ - compatible
+ - reg
+ - wakeup-source
+ - interrupts
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/interrupt-controller/irq.h>
+ #include <dt-bindings/gpio/gpio.h>
+ i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ charger@53 {
+ compatible = "richtek,rt9471";
+ reg = <0x53>;
+ charge-enable-gpios = <&gpio26 1 GPIO_ACTIVE_LOW>;
+ wakeup-source;
+ interrupts-extended = <&gpio_intc 32 IRQ_TYPE_EDGE_FALLING>;
+
+ usb-otg-vbus-regulator {
+ regulator-name = "usb-otg-vbus";
+ regulator-min-microvolt = <4850000>;
+ regulator-max-microvolt = <5300000>;
+ regulator-min-microamp = <500000>;
+ regulator-max-microamp = <1200000>;
+ };
+ };
+ };
/* Generic / shared charger / battery settings */
static const char * const tusb1211_chg_det_psy[] = { "tusb1211-charger-detect" };
static const char * const bq24190_psy[] = { "bq24190-charger" };
-static const char * const bq25890_psy[] = { "bq25890-charger" };
+static const char * const bq25890_psy[] = { "bq25890-charger-0" };
static const struct property_entry fg_bq24190_supply_props[] = {
PROPERTY_ENTRY_STRING_ARRAY("supplied-from", bq24190_psy),
help
This driver supports restart for Microsemi Ocelot SoC and similar.
+config POWER_RESET_ODROID_GO_ULTRA_POWEROFF
+ bool "Odroid Go Ultra power-off driver"
+ depends on ARCH_MESON || COMPILE_TEST
+ depends on I2C=y && OF
+ help
+ This driver supports Power off for Odroid Go Ultra device.
+
config POWER_RESET_OXNAS
bool "OXNAS SoC restart driver"
depends on ARCH_OXNAS
obj-$(CONFIG_POWER_RESET_OXNAS) += oxnas-restart.o
obj-$(CONFIG_POWER_RESET_QCOM_PON) += qcom-pon.o
obj-$(CONFIG_POWER_RESET_OCELOT_RESET) += ocelot-reset.o
+obj-$(CONFIG_POWER_RESET_ODROID_GO_ULTRA_POWEROFF) += odroid-go-ultra-poweroff.o
obj-$(CONFIG_POWER_RESET_PIIX4_POWEROFF) += piix4-poweroff.o
obj-$(CONFIG_POWER_RESET_LTC2952) += ltc2952-poweroff.o
obj-$(CONFIG_POWER_RESET_QNAP) += qnap-poweroff.o
--- /dev/null
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (c) 2023 Neil Armstrong <neil.armstrong@linaro.org>
+ */
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/of_platform.h>
+#include <linux/mfd/rk808.h>
+#include <linux/regmap.h>
+#include <linux/module.h>
+#include <linux/reboot.h>
+#include <linux/i2c.h>
+
+/*
+ * The Odroid Go Ultra has 2 PMICs:
+ * - RK818 (manages the battery and USB-C power supply)
+ * - RK817
+ * Both PMICs feeds power to the S922X SoC, so they must be powered-off in sequence.
+ * Vendor does power-off the RK817 first, then the RK818 so here we follow this sequence.
+ */
+
+struct odroid_go_ultra_poweroff_data {
+ struct device *dev;
+ struct device *rk817;
+ struct device *rk818;
+};
+
+static int odroid_go_ultra_poweroff_prepare(struct sys_off_data *data)
+{
+ struct odroid_go_ultra_poweroff_data *poweroff_data = data->cb_data;
+ struct regmap *rk817, *rk818;
+ int ret;
+
+ /* RK817 Regmap */
+ rk817 = dev_get_regmap(poweroff_data->rk817, NULL);
+ if (!rk817) {
+ dev_err(poweroff_data->dev, "failed to get rk817 regmap\n");
+ return notifier_from_errno(-EINVAL);
+ }
+
+ /* RK818 Regmap */
+ rk818 = dev_get_regmap(poweroff_data->rk818, NULL);
+ if (!rk818) {
+ dev_err(poweroff_data->dev, "failed to get rk818 regmap\n");
+ return notifier_from_errno(-EINVAL);
+ }
+
+ dev_info(poweroff_data->dev, "Setting PMICs for power off");
+
+ /* RK817 */
+ ret = regmap_update_bits(rk817, RK817_SYS_CFG(3), DEV_OFF, DEV_OFF);
+ if (ret) {
+ dev_err(poweroff_data->dev, "failed to poweroff rk817\n");
+ return notifier_from_errno(ret);
+ }
+
+ /* RK818 */
+ ret = regmap_update_bits(rk818, RK818_DEVCTRL_REG, DEV_OFF, DEV_OFF);
+ if (ret) {
+ dev_err(poweroff_data->dev, "failed to poweroff rk818\n");
+ return notifier_from_errno(ret);
+ }
+
+ return NOTIFY_OK;
+}
+
+static void odroid_go_ultra_poweroff_put_pmic_device(void *data)
+{
+ struct device *dev = data;
+
+ put_device(dev);
+}
+
+static int odroid_go_ultra_poweroff_get_pmic_device(struct device *dev, const char *compatible,
+ struct device **pmic)
+{
+ struct device_node *pmic_node;
+ struct i2c_client *pmic_client;
+
+ pmic_node = of_find_compatible_node(NULL, NULL, compatible);
+ if (!pmic_node)
+ return -ENODEV;
+
+ pmic_client = of_find_i2c_device_by_node(pmic_node);
+ of_node_put(pmic_node);
+ if (!pmic_client)
+ return -EPROBE_DEFER;
+
+ *pmic = &pmic_client->dev;
+
+ return devm_add_action_or_reset(dev, odroid_go_ultra_poweroff_put_pmic_device, *pmic);
+}
+
+static int odroid_go_ultra_poweroff_probe(struct platform_device *pdev)
+{
+ struct odroid_go_ultra_poweroff_data *poweroff_data;
+ int ret;
+
+ poweroff_data = devm_kzalloc(&pdev->dev, sizeof(*poweroff_data), GFP_KERNEL);
+ if (!poweroff_data)
+ return -ENOMEM;
+
+ dev_set_drvdata(&pdev->dev, poweroff_data);
+
+ /* RK818 PMIC Device */
+ ret = odroid_go_ultra_poweroff_get_pmic_device(&pdev->dev, "rockchip,rk818",
+ &poweroff_data->rk818);
+ if (ret)
+ return dev_err_probe(&pdev->dev, ret, "failed to get rk818 mfd data\n");
+
+ /* RK817 PMIC Device */
+ ret = odroid_go_ultra_poweroff_get_pmic_device(&pdev->dev, "rockchip,rk817",
+ &poweroff_data->rk817);
+ if (ret)
+ return dev_err_probe(&pdev->dev, ret, "failed to get rk817 mfd data\n");
+
+ /* Register as SYS_OFF_MODE_POWER_OFF_PREPARE because regmap_update_bits may sleep */
+ ret = devm_register_sys_off_handler(&pdev->dev,
+ SYS_OFF_MODE_POWER_OFF_PREPARE,
+ SYS_OFF_PRIO_DEFAULT,
+ odroid_go_ultra_poweroff_prepare,
+ poweroff_data);
+ if (ret)
+ return dev_err_probe(&pdev->dev, ret, "failed to register sys-off handler\n");
+
+ dev_info(&pdev->dev, "Registered Power-Off handler\n");
+
+ return 0;
+}
+static struct platform_device *pdev;
+
+static struct platform_driver odroid_go_ultra_poweroff_driver = {
+ .driver = {
+ .name = "odroid-go-ultra-poweroff",
+ },
+ .probe = odroid_go_ultra_poweroff_probe,
+};
+
+static int __init odroid_go_ultra_poweroff_init(void)
+{
+ int ret;
+
+ /* Only create when running on the Odroid Go Ultra device */
+ if (!of_device_is_compatible(of_root, "hardkernel,odroid-go-ultra"))
+ return -ENODEV;
+
+ ret = platform_driver_register(&odroid_go_ultra_poweroff_driver);
+ if (ret)
+ return ret;
+
+ pdev = platform_device_register_resndata(NULL, "odroid-go-ultra-poweroff", -1,
+ NULL, 0, NULL, 0);
+
+ if (IS_ERR(pdev)) {
+ platform_driver_unregister(&odroid_go_ultra_poweroff_driver);
+ return PTR_ERR(pdev);
+ }
+
+ return 0;
+}
+
+static void __exit odroid_go_ultra_poweroff_exit(void)
+{
+ /* Only delete when running on the Odroid Go Ultra device */
+ if (!of_device_is_compatible(of_root, "hardkernel,odroid-go-ultra"))
+ return;
+
+ platform_device_unregister(pdev);
+ platform_driver_unregister(&odroid_go_ultra_poweroff_driver);
+}
+
+module_init(odroid_go_ultra_poweroff_init);
+module_exit(odroid_go_ultra_poweroff_exit);
+
+MODULE_AUTHOR("Neil Armstrong <neil.armstrong@linaro.org>");
+MODULE_DESCRIPTION("Odroid Go Ultra poweroff driver");
+MODULE_LICENSE("GPL");
struct syscon_reboot_context *ctx;
struct device *dev = &pdev->dev;
int mask_err, value_err;
+ int priority;
int err;
ctx = devm_kzalloc(&pdev->dev, sizeof(*ctx), GFP_KERNEL);
return PTR_ERR(ctx->map);
}
+ if (of_property_read_s32(pdev->dev.of_node, "priority", &priority))
+ priority = 192;
+
if (of_property_read_u32(pdev->dev.of_node, "offset", &ctx->offset))
return -EINVAL;
}
ctx->restart_handler.notifier_call = syscon_restart_handle;
- ctx->restart_handler.priority = 192;
+ ctx->restart_handler.priority = priority;
err = register_restart_handler(&ctx->restart_handler);
if (err)
dev_err(dev, "can't register restart notifier (err=%d)\n", err);
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_RT9471
+ tristate "Richtek RT9471 battery charger driver"
+ depends on I2C && GPIOLIB && REGULATOR
+ select REGMAP_I2C
+ select REGMAP_IRQ
+ select LINEAR_RANGES
+ help
+ This adds support for Richtek RT9471 battery charger. RT9471 is
+ highly-integrated switch mode battery charger which is system power
+ patch manageable device for single cell Li-Ion and Li-polymer battery.
+ It can support BC12 detection on DPDM, and current and voltage
+ regulation on both charging and boost mode.
+
+ This driver can also be built as a module. If so, the module will be
+ called rt9471.
+
config CHARGER_CROS_USBPD
tristate "ChromeOS EC based USBPD charger"
depends on CROS_USBPD_NOTIFY
obj-$(CONFIG_BATTERY_MAX1721X) += max1721x_battery.o
obj-$(CONFIG_BATTERY_RT5033) += rt5033_battery.o
obj-$(CONFIG_CHARGER_RT9455) += rt9455_charger.o
+obj-$(CONFIG_CHARGER_RT9467) += rt9467-charger.o
+obj-$(CONFIG_CHARGER_RT9471) += rt9471.o
obj-$(CONFIG_BATTERY_TWL4030_MADC) += twl4030_madc_battery.o
obj-$(CONFIG_CHARGER_88PM860X) += 88pm860x_charger.o
obj-$(CONFIG_CHARGER_PCF50633) += pcf50633-charger.o
static ssize_t charge_full_show(struct ab8500_fg *di, char *buf)
{
- return sprintf(buf, "%d\n", di->bat_cap.max_mah);
+ return sysfs_emit(buf, "%d\n", di->bat_cap.max_mah);
}
static ssize_t charge_full_store(struct ab8500_fg *di, const char *buf,
static ssize_t charge_now_show(struct ab8500_fg *di, char *buf)
{
- return sprintf(buf, "%d\n", di->bat_cap.prev_mah);
+ return sysfs_emit(buf, "%d\n", di->bat_cap.prev_mah);
}
static ssize_t charge_now_store(struct ab8500_fg *di, const char *buf,
goto fail;
}
- return scnprintf(buf, PAGE_SIZE, "%d\n", (reg_value & 0x7F));
+ return sysfs_emit(buf, "%d\n", (reg_value & 0x7F));
fail:
return ret;
goto fail;
}
- return scnprintf(buf, PAGE_SIZE, "%d\n", (reg_value & 0x7F));
+ return sysfs_emit(buf, "%d\n", (reg_value & 0x7F));
fail:
return ret;
goto fail;
}
- return scnprintf(buf, PAGE_SIZE, "%d\n", (reg_value & 0xF));
+ return sysfs_emit(buf, "%d\n", (reg_value & 0xF));
fail:
return ret;
goto fail;
}
- return scnprintf(buf, PAGE_SIZE, "%d\n", (reg_value & 0x7F));
+ return sysfs_emit(buf, "%d\n", (reg_value & 0x7F));
fail:
return ret;
goto fail;
}
- return scnprintf(buf, PAGE_SIZE, "%d\n", (reg_value & 0xF0) >> 4);
+ return sysfs_emit(buf, "%d\n", (reg_value & 0xF0) >> 4);
fail:
return ret;
if (ret < 0)
goto fail;
- return scnprintf(buf, PAGE_SIZE, "%d\n", (reg_value & 0x1));
+ return sysfs_emit(buf, "%d\n", (reg_value & 0x1));
fail:
return ret;
goto fail;
}
- return scnprintf(buf, PAGE_SIZE, "%d\n", ((reg_value & 0x10) >> 4));
+ return sysfs_emit(buf, "%d\n", ((reg_value & 0x10) >> 4));
fail:
return ret;
goto fail;
}
- return scnprintf(buf, PAGE_SIZE, "%d\n", (reg_value & 0x7));
+ return sysfs_emit(buf, "%d\n", (reg_value & 0x7));
fail:
return ret;
goto fail;
}
- return scnprintf(buf, PAGE_SIZE, "%d\n", ((reg_value & 0x20) >> 5));
+ return sysfs_emit(buf, "%d\n", ((reg_value & 0x20) >> 5));
fail:
return ret;
ret = bq2415x_exec_command(bq, command);
if (ret < 0)
return ret;
- return sprintf(buf, "%d\n", ret);
+ return sysfs_emit(buf, "%d\n", ret);
}
/*
struct bq2415x_device *bq = power_supply_get_drvdata(psy);
if (bq->timer_error)
- return sprintf(buf, "%s\n", bq->timer_error);
+ return sysfs_emit(buf, "%s\n", bq->timer_error);
if (bq->autotimer)
- return sprintf(buf, "auto\n");
- return sprintf(buf, "off\n");
+ return sysfs_emit(buf, "auto\n");
+ return sysfs_emit(buf, "off\n");
}
/*
ssize_t ret = 0;
if (bq->automode > 0)
- ret += sprintf(buf+ret, "auto (");
+ ret += sysfs_emit_at(buf, ret, "auto (");
switch (bq->mode) {
case BQ2415X_MODE_OFF:
- ret += sprintf(buf+ret, "off");
+ ret += sysfs_emit_at(buf, ret, "off");
break;
case BQ2415X_MODE_NONE:
- ret += sprintf(buf+ret, "none");
+ ret += sysfs_emit_at(buf, ret, "none");
break;
case BQ2415X_MODE_HOST_CHARGER:
- ret += sprintf(buf+ret, "host");
+ ret += sysfs_emit_at(buf, ret, "host");
break;
case BQ2415X_MODE_DEDICATED_CHARGER:
- ret += sprintf(buf+ret, "dedicated");
+ ret += sysfs_emit_at(buf, ret, "dedicated");
break;
case BQ2415X_MODE_BOOST:
- ret += sprintf(buf+ret, "boost");
+ ret += sysfs_emit_at(buf, ret, "boost");
break;
}
if (bq->automode > 0)
- ret += sprintf(buf+ret, ")");
+ ret += sysfs_emit_at(buf, ret, ")");
- ret += sprintf(buf+ret, "\n");
+ ret += sysfs_emit_at(buf, ret, "\n");
return ret;
}
switch (bq->reported_mode) {
case BQ2415X_MODE_OFF:
- return sprintf(buf, "off\n");
+ return sysfs_emit(buf, "off\n");
case BQ2415X_MODE_NONE:
- return sprintf(buf, "none\n");
+ return sysfs_emit(buf, "none\n");
case BQ2415X_MODE_HOST_CHARGER:
- return sprintf(buf, "host\n");
+ return sysfs_emit(buf, "host\n");
case BQ2415X_MODE_DEDICATED_CHARGER:
- return sprintf(buf, "dedicated\n");
+ return sysfs_emit(buf, "dedicated\n");
case BQ2415X_MODE_BOOST:
- return sprintf(buf, "boost\n");
+ return sysfs_emit(buf, "boost\n");
}
return -EINVAL;
int ret = bq2415x_i2c_read(bq, reg);
if (ret < 0)
- return sprintf(buf, "%#.2x=error %d\n", reg, ret);
- return sprintf(buf, "%#.2x=%#.2x\n", reg, ret);
+ return sysfs_emit(buf, "%#.2x=error %d\n", reg, ret);
+ return sysfs_emit(buf, "%#.2x=%#.2x\n", reg, ret);
}
/* show all raw values of chip register, format per line: 'register=value' */
if (ret < 0)
return ret;
- return sprintf(buf, "%d\n", ret);
+ return sysfs_emit(buf, "%d\n", ret);
}
/* set *_enable entries */
ret = bq2415x_exec_command(bq, command);
if (ret < 0)
return ret;
- return sprintf(buf, "%d\n", ret);
+ return sysfs_emit(buf, "%d\n", ret);
}
static DEVICE_ATTR(current_limit, S_IWUSR | S_IRUGO,
if (ret)
count = ret;
else
- count = scnprintf(buf, PAGE_SIZE, "%hhx\n", v);
+ count = sysfs_emit(buf, "%hhx\n", v);
pm_runtime_mark_last_busy(bdi->dev);
pm_runtime_put_autosuspend(bdi->dev);
struct power_supply *psy = dev_get_drvdata(dev);
struct bq24257_device *bq = power_supply_get_drvdata(psy);
- return scnprintf(buf, PAGE_SIZE, "%u\n",
- bq24257_vovp_map[bq->init_data.vovp]);
+ return sysfs_emit(buf, "%u\n", bq24257_vovp_map[bq->init_data.vovp]);
}
static ssize_t bq24257_show_in_dpm_voltage(struct device *dev,
struct power_supply *psy = dev_get_drvdata(dev);
struct bq24257_device *bq = power_supply_get_drvdata(psy);
- return scnprintf(buf, PAGE_SIZE, "%u\n",
- bq24257_vindpm_map[bq->init_data.vindpm]);
+ return sysfs_emit(buf, "%u\n", bq24257_vindpm_map[bq->init_data.vindpm]);
}
static ssize_t bq24257_sysfs_show_enable(struct device *dev,
if (ret < 0)
return ret;
- return scnprintf(buf, PAGE_SIZE, "%d\n", ret);
+ return sysfs_emit(buf, "%d\n", ret);
}
static ssize_t bq24257_sysfs_set_enable(struct device *dev,
return ret;
ret = bq->chip_info->bq256xx_set_ichg(bq,
- bat_info->constant_charge_current_max_ua);
+ bq->chip_info->bq256xx_def_ichg);
if (ret)
return ret;
return ret;
ret = bq->chip_info->bq256xx_set_vbatreg(bq,
- bat_info->constant_charge_voltage_max_uv);
+ bq->chip_info->bq256xx_def_vbatreg);
if (ret)
return ret;
struct bq25890_state {
u8 online;
+ u8 hiz;
u8 chrg_status;
u8 chrg_fault;
u8 vsys_status;
struct i2c_client *client;
struct device *dev;
struct power_supply *charger;
+ struct power_supply *secondary_chrg;
+ struct power_supply_desc desc;
+ char name[28]; /* "bq25890-charger-%d" */
+ int id;
struct usb_phy *usb_phy;
struct notifier_block usb_nb;
bool skip_reset;
bool read_back_init_data;
+ bool force_hiz;
u32 pump_express_vbus_max;
+ u32 iinlim_percentage;
enum bq25890_chip_version chip_version;
struct bq25890_init_data init_data;
struct bq25890_state state;
struct mutex lock; /* protect state data */
};
+static DEFINE_IDR(bq25890_id);
+static DEFINE_MUTEX(bq25890_id_mutex);
+
static const struct regmap_range bq25890_readonly_reg_ranges[] = {
regmap_reg_range(0x0b, 0x0c),
regmap_reg_range(0x0e, 0x13),
return bq25890_find_val(ret, TBL_VBUSV);
}
-static int bq25890_power_supply_get_property(struct power_supply *psy,
- enum power_supply_property psp,
- union power_supply_propval *val)
+static void bq25890_update_state(struct bq25890_device *bq,
+ enum power_supply_property psp,
+ struct bq25890_state *state)
{
- struct bq25890_device *bq = power_supply_get_drvdata(psy);
- struct bq25890_state state;
bool do_adc_conv;
int ret;
mutex_lock(&bq->lock);
/* update state in case we lost an interrupt */
__bq25890_handle_irq(bq);
- state = bq->state;
- do_adc_conv = !state.online && bq25890_is_adc_property(psp);
+ *state = bq->state;
+ do_adc_conv = (!state->online || state->hiz) && bq25890_is_adc_property(psp);
if (do_adc_conv)
bq25890_field_write(bq, F_CONV_START, 1);
mutex_unlock(&bq->lock);
if (do_adc_conv)
regmap_field_read_poll_timeout(bq->rmap_fields[F_CONV_START],
ret, !ret, 25000, 1000000);
+}
+
+static int bq25890_power_supply_get_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ struct bq25890_device *bq = power_supply_get_drvdata(psy);
+ struct bq25890_state state;
+ int ret;
+
+ bq25890_update_state(bq, psp, &state);
switch (psp) {
case POWER_SUPPLY_PROP_STATUS:
- if (!state.online)
+ if (!state.online || state.hiz)
val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
else if (state.chrg_status == STATUS_NOT_CHARGING)
val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING;
break;
case POWER_SUPPLY_PROP_CHARGE_TYPE:
- if (!state.online || state.chrg_status == STATUS_NOT_CHARGING ||
+ if (!state.online || state.hiz ||
+ state.chrg_status == STATUS_NOT_CHARGING ||
state.chrg_status == STATUS_TERMINATION_DONE)
val->intval = POWER_SUPPLY_CHARGE_TYPE_NONE;
else if (state.chrg_status == STATUS_PRE_CHARGING)
break;
case POWER_SUPPLY_PROP_ONLINE:
- val->intval = state.online;
+ val->intval = state.online && !state.hiz;
break;
case POWER_SUPPLY_PROP_HEALTH:
const union power_supply_propval *val)
{
struct bq25890_device *bq = power_supply_get_drvdata(psy);
- int maxval;
+ struct bq25890_state state;
+ int maxval, ret;
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);
+ case POWER_SUPPLY_PROP_ONLINE:
+ ret = bq25890_field_write(bq, F_EN_HIZ, !val->intval);
+ if (!ret)
+ bq->force_hiz = !val->intval;
+ bq25890_update_state(bq, psp, &state);
+ return ret;
default:
return -EINVAL;
}
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_ONLINE:
return true;
default:
return false;
}
}
+/*
+ * If there are multiple chargers the maximum current the external power-supply
+ * can deliver needs to be divided over the chargers. This is done according
+ * to the bq->iinlim_percentage setting.
+ */
+static int bq25890_charger_get_scaled_iinlim_regval(struct bq25890_device *bq,
+ int iinlim_ua)
+{
+ iinlim_ua = iinlim_ua * bq->iinlim_percentage / 100;
+ return bq25890_find_idx(iinlim_ua, TBL_IINLIM);
+}
+
/* On the BQ25892 try to get charger-type info from our supplier */
static void bq25890_charger_external_power_changed(struct power_supply *psy)
{
switch (val.intval) {
case POWER_SUPPLY_USB_TYPE_DCP:
- input_current_limit = bq25890_find_idx(2000000, TBL_IINLIM);
+ input_current_limit = bq25890_charger_get_scaled_iinlim_regval(bq, 2000000);
if (bq->pump_express_vbus_max) {
queue_delayed_work(system_power_efficient_wq,
&bq->pump_express_work,
break;
case POWER_SUPPLY_USB_TYPE_CDP:
case POWER_SUPPLY_USB_TYPE_ACA:
- input_current_limit = bq25890_find_idx(1500000, TBL_IINLIM);
+ input_current_limit = bq25890_charger_get_scaled_iinlim_regval(bq, 1500000);
break;
case POWER_SUPPLY_USB_TYPE_SDP:
default:
- input_current_limit = bq25890_find_idx(500000, TBL_IINLIM);
+ input_current_limit = bq25890_charger_get_scaled_iinlim_regval(bq, 500000);
}
bq25890_field_write(bq, F_IINLIM, input_current_limit);
} state_fields[] = {
{F_CHG_STAT, &state->chrg_status},
{F_PG_STAT, &state->online},
+ {F_EN_HIZ, &state->hiz},
{F_VSYS_STAT, &state->vsys_status},
{F_BOOST_FAULT, &state->boost_fault},
{F_BAT_FAULT, &state->bat_fault},
*state_fields[i].data = ret;
}
- dev_dbg(bq->dev, "S:CHG/PG/VSYS=%d/%d/%d, F:CHG/BOOST/BAT/NTC=%d/%d/%d/%d\n",
- state->chrg_status, state->online, state->vsys_status,
- state->chrg_fault, state->boost_fault, state->bat_fault,
- state->ntc_fault);
+ dev_dbg(bq->dev, "S:CHG/PG/HIZ/VSYS=%d/%d/%d/%d, F:CHG/BOOST/BAT/NTC=%d/%d/%d/%d\n",
+ state->chrg_status, state->online,
+ state->hiz, state->vsys_status,
+ state->chrg_fault, state->boost_fault,
+ state->bat_fault, state->ntc_fault);
return 0;
}
static irqreturn_t __bq25890_handle_irq(struct bq25890_device *bq)
{
+ bool adc_conv_rate, new_adc_conv_rate;
struct bq25890_state new_state;
int ret;
if (!memcmp(&bq->state, &new_state, sizeof(new_state)))
return IRQ_NONE;
- if (!new_state.online && bq->state.online) { /* power removed */
- /* disable ADC */
- ret = bq25890_field_write(bq, F_CONV_RATE, 0);
+ /*
+ * Restore HiZ bit in case it was set by user. The chip does not retain
+ * this bit on cable replug, hence the bit must be reset manually here.
+ */
+ if (new_state.online && !bq->state.online && bq->force_hiz) {
+ ret = bq25890_field_write(bq, F_EN_HIZ, bq->force_hiz);
if (ret < 0)
goto error;
- } else if (new_state.online && !bq->state.online) { /* power inserted */
- /* enable ADC, to have control of charge current/voltage */
- ret = bq25890_field_write(bq, F_CONV_RATE, 1);
+ new_state.hiz = 1;
+ }
+
+ /* Should period ADC sampling be enabled? */
+ adc_conv_rate = bq->state.online && !bq->state.hiz;
+ new_adc_conv_rate = new_state.online && !new_state.hiz;
+
+ if (new_adc_conv_rate != adc_conv_rate) {
+ ret = bq25890_field_write(bq, F_CONV_RATE, new_adc_conv_rate);
if (ret < 0)
goto error;
}
}
/* Configure ADC for continuous conversions when charging */
- ret = bq25890_field_write(bq, F_CONV_RATE, !!bq->state.online);
+ ret = bq25890_field_write(bq, F_CONV_RATE, bq->state.online && !bq->state.hiz);
if (ret < 0) {
dev_dbg(bq->dev, "Config ADC failed %d\n", ret);
return ret;
};
static const struct power_supply_desc bq25890_power_supply_desc = {
- .name = "bq25890-charger",
.type = POWER_SUPPLY_TYPE_USB,
.properties = bq25890_power_supply_props,
.num_properties = ARRAY_SIZE(bq25890_power_supply_props),
{
struct power_supply_config psy_cfg = { .drv_data = bq, };
+ /* Get ID for the device */
+ mutex_lock(&bq25890_id_mutex);
+ bq->id = idr_alloc(&bq25890_id, bq, 0, 0, GFP_KERNEL);
+ mutex_unlock(&bq25890_id_mutex);
+ if (bq->id < 0)
+ return bq->id;
+
+ snprintf(bq->name, sizeof(bq->name), "bq25890-charger-%d", bq->id);
+ bq->desc = bq25890_power_supply_desc;
+ bq->desc.name = bq->name;
+
psy_cfg.supplied_to = bq25890_charger_supplied_to;
psy_cfg.num_supplicants = ARRAY_SIZE(bq25890_charger_supplied_to);
- bq->charger = devm_power_supply_register(bq->dev,
- &bq25890_power_supply_desc,
- &psy_cfg);
+ bq->charger = devm_power_supply_register(bq->dev, &bq->desc, &psy_cfg);
return PTR_ERR_OR_ZERO(bq->charger);
}
{
struct bq25890_device *bq =
container_of(data, struct bq25890_device, pump_express_work.work);
+ union power_supply_propval value;
int voltage, i, ret;
dev_dbg(bq->dev, "Start to request input voltage increasing\n");
+ /* If there is a second charger put in Hi-Z mode */
+ if (bq->secondary_chrg) {
+ value.intval = 0;
+ power_supply_set_property(bq->secondary_chrg, POWER_SUPPLY_PROP_ONLINE, &value);
+ }
+
/* Enable current pulse voltage control protocol */
ret = bq25890_field_write(bq, F_PUMPX_EN, 1);
if (ret < 0)
bq25890_field_write(bq, F_PUMPX_EN, 0);
+ if (bq->secondary_chrg) {
+ value.intval = 1;
+ power_supply_set_property(bq->secondary_chrg, POWER_SUPPLY_PROP_ONLINE, &value);
+ }
+
dev_info(bq->dev, "Hi-voltage charging requested, input voltage is %d mV\n",
voltage);
static int bq25890_vbus_enable(struct regulator_dev *rdev)
{
struct bq25890_device *bq = rdev_get_drvdata(rdev);
+ union power_supply_propval val = {
+ .intval = 0,
+ };
+
+ /*
+ * When enabling 5V boost / Vbus output, we need to put the secondary
+ * charger in Hi-Z mode to avoid it trying to charge the secondary
+ * battery from the 5V boost output.
+ */
+ if (bq->secondary_chrg)
+ power_supply_set_property(bq->secondary_chrg, POWER_SUPPLY_PROP_ONLINE, &val);
return bq25890_set_otg_cfg(bq, 1);
}
static int bq25890_vbus_disable(struct regulator_dev *rdev)
{
struct bq25890_device *bq = rdev_get_drvdata(rdev);
+ union power_supply_propval val = {
+ .intval = 1,
+ };
+ int ret;
+
+ ret = bq25890_set_otg_cfg(bq, 0);
+ if (ret)
+ return ret;
- return bq25890_set_otg_cfg(bq, 0);
+ if (bq->secondary_chrg)
+ power_supply_set_property(bq->secondary_chrg, POWER_SUPPLY_PROP_ONLINE, &val);
+
+ return 0;
}
static int bq25890_vbus_is_enabled(struct regulator_dev *rdev)
{
int ret;
struct bq25890_init_data *init = &bq->init_data;
+ const char *str;
+ u32 val;
+
+ ret = device_property_read_string(bq->dev, "linux,secondary-charger-name", &str);
+ if (ret == 0) {
+ bq->secondary_chrg = power_supply_get_by_name(str);
+ if (!bq->secondary_chrg)
+ return -EPROBE_DEFER;
+ }
/* Optional, left at 0 if property is not present */
device_property_read_u32(bq->dev, "linux,pump-express-vbus-max",
&bq->pump_express_vbus_max);
+ ret = device_property_read_u32(bq->dev, "linux,iinlim-percentage", &val);
+ if (ret == 0) {
+ if (val > 100) {
+ dev_err(bq->dev, "Error linux,iinlim-percentage %u > 100\n", val);
+ return -EINVAL;
+ }
+ bq->iinlim_percentage = val;
+ } else {
+ bq->iinlim_percentage = 100;
+ }
+
bq->skip_reset = device_property_read_bool(bq->dev, "linux,skip-reset");
bq->read_back_init_data = device_property_read_bool(bq->dev,
"linux,read-back-settings");
struct bq25890_device *bq = data;
cancel_delayed_work_sync(&bq->pump_express_work);
+
+ if (bq->id >= 0) {
+ mutex_lock(&bq25890_id_mutex);
+ idr_remove(&bq25890_id, bq->id);
+ mutex_unlock(&bq25890_id_mutex);
+ }
}
static int bq25890_probe(struct i2c_client *client)
bq->client = client;
bq->dev = dev;
+ bq->id = -1;
mutex_init(&bq->lock);
INIT_DELAYED_WORK(&bq->pump_express_work, bq25890_pump_express_work);
if (di->opts & BQ27XXX_O_ZERO) {
if (di->cache.flags & BQ27000_FLAG_FC)
level = POWER_SUPPLY_CAPACITY_LEVEL_FULL;
- else if (di->cache.flags & BQ27000_FLAG_EDV1)
- level = POWER_SUPPLY_CAPACITY_LEVEL_LOW;
else if (di->cache.flags & BQ27000_FLAG_EDVF)
level = POWER_SUPPLY_CAPACITY_LEVEL_CRITICAL;
+ else if (di->cache.flags & BQ27000_FLAG_EDV1)
+ level = POWER_SUPPLY_CAPACITY_LEVEL_LOW;
else
level = POWER_SUPPLY_CAPACITY_LEVEL_NORMAL;
} else if (di->opts & BQ27Z561_O_BITS) {
} else {
if (di->cache.flags & BQ27XXX_FLAG_FC)
level = POWER_SUPPLY_CAPACITY_LEVEL_FULL;
- else if (di->cache.flags & BQ27XXX_FLAG_SOC1)
- level = POWER_SUPPLY_CAPACITY_LEVEL_LOW;
else if (di->cache.flags & BQ27XXX_FLAG_SOCF)
level = POWER_SUPPLY_CAPACITY_LEVEL_CRITICAL;
+ else if (di->cache.flags & BQ27XXX_FLAG_SOC1)
+ level = POWER_SUPPLY_CAPACITY_LEVEL_LOW;
else
level = POWER_SUPPLY_CAPACITY_LEVEL_NORMAL;
}
struct charger_regulator *charger
= container_of(attr, struct charger_regulator, attr_name);
- return sprintf(buf, "%s\n", charger->regulator_name);
+ return sysfs_emit(buf, "%s\n", charger->regulator_name);
}
static ssize_t charger_state_show(struct device *dev,
if (!charger->externally_control)
state = regulator_is_enabled(charger->consumer);
- return sprintf(buf, "%s\n", state ? "enabled" : "disabled");
+ return sysfs_emit(buf, "%s\n", state ? "enabled" : "disabled");
}
static ssize_t charger_externally_control_show(struct device *dev,
struct charger_regulator *charger = container_of(attr,
struct charger_regulator, attr_externally_control);
- return sprintf(buf, "%d\n", charger->externally_control);
+ return sysfs_emit(buf, "%d\n", charger->externally_control);
}
static ssize_t charger_externally_control_store(struct device *dev,
goto err_psy_reg_bu;
}
- ret = request_irq(gpio_to_irq(COLLIE_GPIO_CO),
+ ret = request_irq(gpiod_to_irq(collie_bat_main.gpio_full),
collie_bat_gpio_isr,
IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
"main full", &collie_bat_main);
static void collie_bat_remove(struct ucb1x00_dev *dev)
{
- free_irq(gpio_to_irq(COLLIE_GPIO_CO), &collie_bat_main);
+ free_irq(gpiod_to_irq(collie_bat_main.gpio_full), &collie_bat_main);
power_supply_unregister(collie_bat_bu.psy);
power_supply_unregister(collie_bat_main.psy);
int irq, ret;
irq = platform_get_irq_byname(pdev, irq_name);
- if (irq < 0) {
- dev_err(dev, "Failed to get IRQ CHG_STATUS: %d\n", irq);
+ if (irq < 0)
return irq;
- }
ret = request_threaded_irq(irq, NULL, handler, IRQF_ONESHOT, irq_name,
charger);
static void da9150_charger_unregister_irq(struct platform_device *pdev,
const char *irq_name)
{
- struct device *dev = &pdev->dev;
struct da9150_charger *charger = platform_get_drvdata(pdev);
int irq;
irq = platform_get_irq_byname(pdev, irq_name);
- if (irq < 0) {
- dev_err(dev, "Failed to get IRQ CHG_STATUS: %d\n", irq);
+ if (irq < 0)
return;
- }
free_irq(irq, charger);
}
if (ret < 0)
return ret;
- return sprintf(buf, "%d\n",
+ return sysfs_emit(buf, "%d\n",
!!(control_reg & DS2780_CONTROL_REG_PMOD));
}
if (ret < 0)
return ret;
- ret = sprintf(buf, "%d\n", sense_resistor);
+ ret = sysfs_emit(buf, "%d\n", sense_resistor);
return ret;
}
if (ret < 0)
return ret;
- return sprintf(buf, "%d\n", rsgain);
+ return sysfs_emit(buf, "%d\n", rsgain);
}
static ssize_t ds2780_set_rsgain_setting(struct device *dev,
if (ret < 0)
return ret;
- ret = sprintf(buf, "%d\n", sfr & DS2780_SFR_REG_PIOSC);
+ ret = sysfs_emit(buf, "%d\n", sfr & DS2780_SFR_REG_PIOSC);
return ret;
}
if (ret < 0)
return ret;
- return sprintf(buf, "%d\n",
+ return sysfs_emit(buf, "%d\n",
!!(control_reg & DS2781_CONTROL_PMOD));
}
if (ret < 0)
return ret;
- ret = sprintf(buf, "%d\n", sense_resistor);
+ ret = sysfs_emit(buf, "%d\n", sense_resistor);
return ret;
}
if (ret < 0)
return ret;
- return sprintf(buf, "%d\n", rsgain);
+ return sysfs_emit(buf, "%d\n", rsgain);
}
static ssize_t ds2781_set_rsgain_setting(struct device *dev,
if (ret < 0)
return ret;
- ret = sprintf(buf, "%d\n", sfr & DS2781_SFR_PIOSC);
+ ret = sysfs_emit(buf, "%d\n", sfr & DS2781_SFR_PIOSC);
return ret;
}
lp8788_read_byte(pchg->lp, LP8788_CHG_STATUS, &data);
state = (data & LP8788_CHG_STATE_M) >> LP8788_CHG_STATE_S;
- return scnprintf(buf, PAGE_SIZE, "%s\n", desc[state]);
+ return sysfs_emit(buf, "%s\n", desc[state]);
}
static ssize_t lp8788_show_eoc_time(struct device *dev,
lp8788_read_byte(pchg->lp, LP8788_CHG_EOC, &val);
val = (val & LP8788_CHG_EOC_TIME_M) >> LP8788_CHG_EOC_TIME_S;
- return scnprintf(buf, PAGE_SIZE, "End Of Charge Time: %s\n",
- stime[val]);
+ return sysfs_emit(buf, "End Of Charge Time: %s\n", stime[val]);
}
static ssize_t lp8788_show_eoc_level(struct device *dev,
val = (val & LP8788_CHG_EOC_LEVEL_M) >> LP8788_CHG_EOC_LEVEL_S;
level = mode ? abs_level[val] : relative_level[val];
- return scnprintf(buf, PAGE_SIZE, "End Of Charge Level: %s\n", level);
+ return sysfs_emit(buf, "End Of Charge Level: %s\n", level);
}
static DEVICE_ATTR(charger_status, S_IRUSR, lp8788_show_charger_status, NULL);
}
}
- return sprintf(buf, "%s\n", result);
+ return sysfs_emit(buf, "%s\n", result);
}
static DEVICE_ATTR_RO(charge_status);
if (ret)
return ret;
- return sprintf(buf, "%d\n", val.intval);
+ return sysfs_emit(buf, "%d\n", val.intval);
}
static DEVICE_ATTR_RO(vbat);
if (ret)
return ret;
- return sprintf(buf, "%d\n", val.intval);
+ return sysfs_emit(buf, "%d\n", val.intval);
}
static DEVICE_ATTR_RO(vbat_avg);
if (ret)
return ret;
- return sprintf(buf, "%d\n", val.intval);
+ return sysfs_emit(buf, "%d\n", val.intval);
}
static DEVICE_ATTR_RO(ibat);
if (ret)
return ret;
- return sprintf(buf, "%u\n", regval & BIT(2) ? 1 : 0);
+ return sysfs_emit(buf, "%u\n", regval & BIT(2) ? 1 : 0);
}
static ssize_t force_telemetry_store(struct device *dev,
if (ret)
return ret;
- return sprintf(buf, "%u\n",
+ return sysfs_emit(buf, "%u\n",
regval == LTC4162L_ARM_SHIP_MODE_MAGIC ? 1 : 0);
}
break;
}
- return scnprintf(buf, PAGE_SIZE, "%u\n", val);
+ return sysfs_emit(buf, "%u\n", val);
}
static ssize_t store_fast_charge_timer(struct device *dev,
}
if (!info->ManufacturerName[0])
- strncpy(info->ManufacturerName, DEF_MFG_NAME,
+ strscpy(info->ManufacturerName, DEF_MFG_NAME,
2 * MAX1721X_REG_MFG_NUMB);
if (get_string(info, MAX1721X_REG_DEV_STR,
switch (dev_name & MAX172XX_DEV_MASK) {
case MAX172X1_DEV:
- strncpy(info->DeviceName, DEF_DEV_NAME_MAX17211,
+ strscpy(info->DeviceName, DEF_DEV_NAME_MAX17211,
2 * MAX1721X_REG_DEV_NUMB);
break;
case MAX172X5_DEV:
- strncpy(info->DeviceName, DEF_DEV_NAME_MAX17215,
+ strscpy(info->DeviceName, DEF_DEV_NAME_MAX17215,
2 * MAX1721X_REG_DEV_NUMB);
break;
default:
- strncpy(info->DeviceName, DEF_DEV_NAME_UNKNOWN,
+ strscpy(info->DeviceName, DEF_DEV_NAME_UNKNOWN,
2 * MAX1721X_REG_DEV_NUMB);
}
}
return rv;
}
-static int max77650_charger_disable(struct max77650_charger_data *chg)
+static void max77650_charger_disable(struct max77650_charger_data *chg)
{
int rv;
MAX77650_CHARGER_DISABLED);
if (rv)
dev_err(chg->dev, "unable to disable the charger: %d\n", rv);
-
- return rv;
}
static irqreturn_t max77650_charger_check_status(int irq, void *data)
{
struct max77650_charger_data *chg = platform_get_drvdata(pdev);
- return max77650_charger_disable(chg);
+ max77650_charger_disable(chg);
+
+ return 0;
}
static const struct of_device_id max77650_charger_of_match[] = {
break;
}
- return scnprintf(buf, PAGE_SIZE, "%u\n", val);
+ return sysfs_emit(buf, "%u\n", val);
}
static int max77693_set_fast_charge_timer(struct max77693_charger *chg,
else
val = data * 50000;
- return scnprintf(buf, PAGE_SIZE, "%u\n", val);
+ return sysfs_emit(buf, "%u\n", val);
}
static int max77693_set_top_off_threshold_current(struct max77693_charger *chg,
val = data * 10;
- return scnprintf(buf, PAGE_SIZE, "%u\n", val);
+ return sysfs_emit(buf, "%u\n", val);
}
static int max77693_set_top_off_timer(struct max77693_charger *chg,
return ret;
rval = (rval >> 4) * 10;
- return sprintf(buf, "%d mohm\n", rval);
+ return sysfs_emit(buf, "%d mohm\n", rval);
}
static ssize_t batt_impedance_compensation_store(struct device *dev,
if (ret < 0)
return ret;
- return sprintf(buf, "%d\n", ec_byte);
+ return sysfs_emit(buf, "%d\n", ec_byte);
}
static struct device_attribute olpc_bat_error = {
u8 mbcs2 = pcf50633_reg_read(mbc->pcf, PCF50633_REG_MBCS2);
u8 chgmod = (mbcs2 & PCF50633_MBCS2_MBC_MASK);
- return sprintf(buf, "%d\n", chgmod);
+ return sysfs_emit(buf, "%d\n", chgmod);
}
static DEVICE_ATTR(chgmode, S_IRUGO, show_chgmode, NULL);
else
ma = 0;
- return sprintf(buf, "%u\n", ma);
+ return sysfs_emit(buf, "%u\n", ma);
}
static ssize_t set_usblim(struct device *dev,
ma = (mbc->pcf->pdata->charger_reference_current_ma * mbcc5) >> 8;
- return sprintf(buf, "%u\n", ma);
+ return sysfs_emit(buf, "%u\n", ma);
}
static ssize_t set_chglim(struct device *dev,
thermal_zone_device_unregister(psy->tzd);
}
-/* thermal cooling device callbacks */
-static int ps_get_max_charge_cntl_limit(struct thermal_cooling_device *tcd,
- unsigned long *state)
-{
- struct power_supply *psy;
- union power_supply_propval val;
- int ret;
-
- psy = tcd->devdata;
- ret = power_supply_get_property(psy,
- POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT_MAX, &val);
- if (ret)
- return ret;
-
- *state = val.intval;
-
- return ret;
-}
-
-static int ps_get_cur_charge_cntl_limit(struct thermal_cooling_device *tcd,
- unsigned long *state)
-{
- struct power_supply *psy;
- union power_supply_propval val;
- int ret;
-
- psy = tcd->devdata;
- ret = power_supply_get_property(psy,
- POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT, &val);
- if (ret)
- return ret;
-
- *state = val.intval;
-
- return ret;
-}
-
-static int ps_set_cur_charge_cntl_limit(struct thermal_cooling_device *tcd,
- unsigned long state)
-{
- struct power_supply *psy;
- union power_supply_propval val;
- int ret;
-
- psy = tcd->devdata;
- val.intval = state;
- ret = psy->desc->set_property(psy,
- POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT, &val);
-
- return ret;
-}
-
-static const struct thermal_cooling_device_ops psy_tcd_ops = {
- .get_max_state = ps_get_max_charge_cntl_limit,
- .get_cur_state = ps_get_cur_charge_cntl_limit,
- .set_cur_state = ps_set_cur_charge_cntl_limit,
-};
-
-static int psy_register_cooler(struct power_supply *psy)
-{
- /* Register for cooling device if psy can control charging */
- if (psy_has_property(psy->desc, POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT)) {
- psy->tcd = thermal_cooling_device_register(
- (char *)psy->desc->name,
- psy, &psy_tcd_ops);
- return PTR_ERR_OR_ZERO(psy->tcd);
- }
-
- return 0;
-}
-
-static void psy_unregister_cooler(struct power_supply *psy)
-{
- if (IS_ERR_OR_NULL(psy->tcd))
- return;
- thermal_cooling_device_unregister(psy->tcd);
-}
#else
static int psy_register_thermal(struct power_supply *psy)
{
static void psy_unregister_thermal(struct power_supply *psy)
{
}
-
-static int psy_register_cooler(struct power_supply *psy)
-{
- return 0;
-}
-
-static void psy_unregister_cooler(struct power_supply *psy)
-{
-}
#endif
static struct power_supply *__must_check
if (rc)
goto register_thermal_failed;
- rc = psy_register_cooler(psy);
- if (rc)
- goto register_cooler_failed;
-
rc = power_supply_create_triggers(psy);
if (rc)
goto create_triggers_failed;
add_hwmon_sysfs_failed:
power_supply_remove_triggers(psy);
create_triggers_failed:
- psy_unregister_cooler(psy);
-register_cooler_failed:
psy_unregister_thermal(psy);
register_thermal_failed:
wakeup_init_failed:
sysfs_remove_link(&psy->dev.kobj, "powers");
power_supply_remove_hwmon_sysfs(psy);
power_supply_remove_triggers(psy);
- psy_unregister_cooler(psy);
psy_unregister_thermal(psy);
device_init_wakeup(&psy->dev, false);
device_unregister(&psy->dev);
#include <linux/device.h>
#include <linux/power_supply.h>
#include <linux/slab.h>
+#include <linux/leds.h>
#include "power_supply.h"
usb_type = desc->usb_types[i];
if (value->intval == usb_type) {
- count += sprintf(buf + count, "[%s] ",
+ count += sysfs_emit_at(buf, count, "[%s] ",
POWER_SUPPLY_USB_TYPE_TEXT[usb_type]);
match = true;
} else {
- count += sprintf(buf + count, "%s ",
+ count += sysfs_emit_at(buf, count, "%s ",
POWER_SUPPLY_USB_TYPE_TEXT[usb_type]);
}
}
if (ps_attr->text_values_len > 0 &&
value.intval < ps_attr->text_values_len && value.intval >= 0) {
- return sprintf(buf, "%s\n", ps_attr->text_values[value.intval]);
+ return sysfs_emit(buf, "%s\n", ps_attr->text_values[value.intval]);
}
switch (psp) {
&value, buf);
break;
case POWER_SUPPLY_PROP_MODEL_NAME ... POWER_SUPPLY_PROP_SERIAL_NUMBER:
- ret = sprintf(buf, "%s\n", value.strval);
+ ret = sysfs_emit(buf, "%s\n", value.strval);
break;
default:
- ret = sprintf(buf, "%d\n", value.intval);
+ ret = sysfs_emit(buf, "%d\n", value.intval);
}
return ret;
--- /dev/null
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2022 Richtek Technology Corp.
+ *
+ * Author: ChiYuan Huang <cy_huang@richtek.com>
+ * ChiaEn Wu <chiaen_wu@richtek.com>
+ */
+
+#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 attach 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@richtek.com>");
+MODULE_AUTHOR("ChiaEn Wu <chiaen_wu@richtek.com>");
+MODULE_LICENSE("GPL");
--- /dev/null
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2022 Richtek Technology Corp.
+ *
+ * Authors: Alina Yu <alina_yu@richtek.com>
+ * ChiYuan Huang <cy_huang@richtek.com>
+ */
+
+#include <linux/bits.h>
+#include <linux/gpio/consumer.h>
+#include <linux/i2c.h>
+#include <linux/interrupt.h>
+#include <linux/kstrtox.h>
+#include <linux/linear_range.h>
+#include <linux/mod_devicetable.h>
+#include <linux/module.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/sysfs.h>
+
+#define RT9471_REG_OTGCFG 0x00
+#define RT9471_REG_TOP 0x01
+#define RT9471_REG_FUNC 0x02
+#define RT9471_REG_IBUS 0x03
+#define RT9471_REG_VBUS 0x04
+#define RT9471_REG_PRECHG 0x05
+#define RT9471_REG_VCHG 0x07
+#define RT9471_REG_ICHG 0x08
+#define RT9471_REG_CHGTMR 0x09
+#define RT9471_REG_EOC 0x0A
+#define RT9471_REG_INFO 0x0B
+#define RT9471_REG_JEITA 0x0C
+#define RT9471_REG_PUMP_EXP 0x0D
+#define RT9471_REG_DPDMDET 0x0E
+#define RT9471_REG_ICSTAT 0x0F
+#define RT9471_REG_STAT0 0x10
+#define RT9471_REG_STAT1 0x11
+#define RT9471_REG_STAT2 0x12
+#define RT9471_REG_IRQ0 0x20
+#define RT9471_REG_MASK0 0x30
+
+#define RT9471_OTGCV_MASK GENMASK(7, 6)
+#define RT9471_OTGCC_MASK BIT(0)
+#define RT9471_OTGEN_MASK BIT(1)
+#define RT9471_CHGFAULT_MASK GENMASK(4, 1)
+
+#define RT9471_NUM_IRQ_REGS 4
+#define RT9471_OTGCV_MINUV 4850000
+#define RT9471_OTGCV_STEPUV 150000
+#define RT9471_NUM_VOTG 4
+#define RT9471_VCHG_MAXUV 4700000
+#define RT9471_ICHG_MAXUA 3150000
+
+/* Device ID */
+#define RT9470_DEVID 0x09
+#define RT9470D_DEVID 0x0A
+#define RT9471_DEVID 0x0D
+#define RT9471D_DEVID 0x0E
+
+/* IRQ number */
+#define RT9471_IRQ_BC12_DONE 0
+#define RT9471_IRQ_DETACH 1
+#define RT9471_IRQ_RECHG 2
+#define RT9471_IRQ_CHG_DONE 3
+#define RT9471_IRQ_BG_CHG 4
+#define RT9471_IRQ_IE0C 5
+#define RT9471_IRQ_CHG_RDY 6
+#define RT9471_IRQ_VBUS_GD 7
+#define RT9471_IRQ_CHG_BATOV 9
+#define RT9471_IRQ_CHG_SYSOV 10
+#define RT9471_IRQ_CHG_TOUT 11
+#define RT9471_IRQ_CHG_BUSUV 12
+#define RT9471_IRQ_CHG_THREG 13
+#define RT9471_IRQ_CHG_AICR 14
+#define RT9471_IRQ_CHG_MIVR 15
+#define RT9471_IRQ_SYS_SHORT 16
+#define RT9471_IRQ_SYS_MIN 17
+#define RT9471_IRQ_AICC_DONE 18
+#define RT9471_IRQ_PE_DONE 19
+#define RT9471_IRQ_JEITA_COLD 20
+#define RT9471_IRQ_JEITA_COOL 21
+#define RT9471_IRQ_JEITA_WARM 22
+#define RT9471_IRQ_JEITA_HOT 23
+#define RT9471_IRQ_OTG_FAULT 24
+#define RT9471_IRQ_OTG_LBP 25
+#define RT9471_IRQ_OTG_CC 26
+#define RT9471_IRQ_WDT 29
+#define RT9471_IRQ_VAC_OV 30
+#define RT9471_IRQ_OTP 31
+
+enum rt9471_fields {
+ F_WDT = 0,
+ F_WDT_RST,
+ F_CHG_EN,
+ F_HZ,
+ F_BATFET_DIS,
+ F_AICR,
+ F_AICC_EN,
+ F_MIVR,
+ F_IPRE_CHG,
+ F_VPRE_CHG,
+ F_VBAT_REG,
+ F_ICHG_REG,
+ F_EOC_RST,
+ F_TE,
+ F_IEOC_CHG,
+ F_DEVICE_ID,
+ F_REG_RST,
+ F_BC12_EN,
+ F_IC_STAT,
+ F_PORT_STAT,
+ F_ST_CHG_DONE,
+ F_ST_CHG_RDY,
+ F_ST_VBUS_GD,
+ F_MAX_FIELDS
+};
+
+enum rt9471_ranges {
+ RT9471_RANGE_AICR = 0,
+ RT9471_RANGE_MIVR,
+ RT9471_RANGE_IPRE,
+ RT9471_RANGE_VCHG,
+ RT9471_RANGE_ICHG,
+ RT9471_RANGE_IEOC,
+ RT9471_MAX_RANGES
+};
+
+enum {
+ RT9471_PORTSTAT_APPLE_10W = 8,
+ RT9471_PORTSTAT_SAMSUNG_10W,
+ RT9471_PORTSTAT_APPLE_5W,
+ RT9471_PORTSTAT_APPLE_12W,
+ RT9471_PORTSTAT_NSTD,
+ RT9471_PORTSTAT_SDP,
+ RT9471_PORTSTAT_CDP,
+ RT9471_PORTSTAT_DCP,
+};
+
+struct rt9471_chip {
+ struct device *dev;
+ struct regmap *regmap;
+ struct regmap_field *rm_fields[F_MAX_FIELDS];
+ struct regmap_irq_chip_data *irq_chip_data;
+ struct regulator_dev *otg_rdev;
+ struct power_supply *psy;
+ struct power_supply_desc psy_desc;
+ struct mutex var_lock;
+ enum power_supply_usb_type psy_usb_type;
+ int psy_usb_curr;
+};
+
+static const struct reg_field rt9471_reg_fields[F_MAX_FIELDS] = {
+ [F_WDT] = REG_FIELD(RT9471_REG_TOP, 0, 0),
+ [F_WDT_RST] = REG_FIELD(RT9471_REG_TOP, 1, 1),
+ [F_CHG_EN] = REG_FIELD(RT9471_REG_FUNC, 0, 0),
+ [F_HZ] = REG_FIELD(RT9471_REG_FUNC, 5, 5),
+ [F_BATFET_DIS] = REG_FIELD(RT9471_REG_FUNC, 7, 7),
+ [F_AICR] = REG_FIELD(RT9471_REG_IBUS, 0, 5),
+ [F_AICC_EN] = REG_FIELD(RT9471_REG_IBUS, 7, 7),
+ [F_MIVR] = REG_FIELD(RT9471_REG_VBUS, 0, 3),
+ [F_IPRE_CHG] = REG_FIELD(RT9471_REG_PRECHG, 0, 3),
+ [F_VPRE_CHG] = REG_FIELD(RT9471_REG_PRECHG, 4, 6),
+ [F_VBAT_REG] = REG_FIELD(RT9471_REG_VCHG, 0, 6),
+ [F_ICHG_REG] = REG_FIELD(RT9471_REG_ICHG, 0, 5),
+ [F_EOC_RST] = REG_FIELD(RT9471_REG_EOC, 0, 0),
+ [F_TE] = REG_FIELD(RT9471_REG_EOC, 1, 1),
+ [F_IEOC_CHG] = REG_FIELD(RT9471_REG_EOC, 4, 7),
+ [F_DEVICE_ID] = REG_FIELD(RT9471_REG_INFO, 3, 6),
+ [F_REG_RST] = REG_FIELD(RT9471_REG_INFO, 7, 7),
+ [F_BC12_EN] = REG_FIELD(RT9471_REG_DPDMDET, 7, 7),
+ [F_IC_STAT] = REG_FIELD(RT9471_REG_ICSTAT, 0, 3),
+ [F_PORT_STAT] = REG_FIELD(RT9471_REG_ICSTAT, 4, 7),
+ [F_ST_CHG_DONE] = REG_FIELD(RT9471_REG_STAT0, 3, 3),
+ [F_ST_CHG_RDY] = REG_FIELD(RT9471_REG_STAT0, 6, 6),
+ [F_ST_VBUS_GD] = REG_FIELD(RT9471_REG_STAT0, 7, 7),
+};
+
+static const struct linear_range rt9471_chg_ranges[RT9471_MAX_RANGES] = {
+ [RT9471_RANGE_AICR] = { .min = 50000, .min_sel = 1, .max_sel = 63, .step = 50000 },
+ [RT9471_RANGE_MIVR] = { .min = 3900000, .min_sel = 0, .max_sel = 15, .step = 100000 },
+ [RT9471_RANGE_IPRE] = { .min = 50000, .min_sel = 0, .max_sel = 15, .step = 50000 },
+ [RT9471_RANGE_VCHG] = { .min = 3900000, .min_sel = 0, .max_sel = 80, .step = 10000 },
+ [RT9471_RANGE_ICHG] = { .min = 0, .min_sel = 0, .max_sel = 63, .step = 50000 },
+ [RT9471_RANGE_IEOC] = { .min = 50000, .min_sel = 0, .max_sel = 15, .step = 50000 },
+};
+
+static int rt9471_set_value_by_field_range(struct rt9471_chip *chip,
+ enum rt9471_fields field,
+ enum rt9471_ranges range, int val)
+{
+ unsigned int sel;
+
+ if (val < 0)
+ return -EINVAL;
+
+ linear_range_get_selector_within(rt9471_chg_ranges + range, val, &sel);
+
+ return regmap_field_write(chip->rm_fields[field], sel);
+}
+
+
+static int rt9471_get_value_by_field_range(struct rt9471_chip *chip,
+ enum rt9471_fields field,
+ enum rt9471_ranges range, int *val)
+{
+ unsigned int sel, rvalue;
+ int ret;
+
+ ret = regmap_field_read(chip->rm_fields[field], &sel);
+ if (ret)
+ return ret;
+
+ ret = linear_range_get_value(rt9471_chg_ranges + range, sel, &rvalue);
+ if (ret)
+ return ret;
+
+ *val = rvalue;
+ return 0;
+}
+
+static int rt9471_set_ieoc(struct rt9471_chip *chip, int microamp)
+{
+ int ret;
+
+ if (microamp == 0)
+ return regmap_field_write(chip->rm_fields[F_TE], 0);
+
+ ret = rt9471_set_value_by_field_range(chip, F_IEOC_CHG, RT9471_RANGE_IEOC, microamp);
+ if (ret)
+ return ret;
+
+ /* After applying the new IEOC value, enable charge termination */
+ return regmap_field_write(chip->rm_fields[F_TE], 1);
+}
+
+static int rt9471_get_ieoc(struct rt9471_chip *chip, int *microamp)
+{
+ unsigned int chg_term_enable;
+ int ret;
+
+ ret = regmap_field_read(chip->rm_fields[F_TE], &chg_term_enable);
+ if (ret)
+ return ret;
+
+ if (!chg_term_enable) {
+ *microamp = 0;
+ return 0;
+ }
+
+ return rt9471_get_value_by_field_range(chip, F_IEOC_CHG, RT9471_RANGE_IEOC, microamp);
+}
+
+static int rt9471_get_status(struct rt9471_chip *chip, int *status)
+{
+ unsigned int chg_ready, chg_done, fault_stat;
+ int ret;
+
+ ret = regmap_field_read(chip->rm_fields[F_ST_CHG_RDY], &chg_ready);
+ if (ret)
+ return ret;
+
+ ret = regmap_field_read(chip->rm_fields[F_ST_CHG_DONE], &chg_done);
+ if (ret)
+ return ret;
+
+ ret = regmap_read(chip->regmap, RT9471_REG_STAT1, &fault_stat);
+ if (ret)
+ return ret;
+
+ fault_stat &= RT9471_CHGFAULT_MASK;
+
+ if (chg_ready && chg_done)
+ *status = POWER_SUPPLY_STATUS_FULL;
+ else if (chg_ready && fault_stat)
+ *status = POWER_SUPPLY_STATUS_NOT_CHARGING;
+ else if (chg_ready && !fault_stat)
+ *status = POWER_SUPPLY_STATUS_CHARGING;
+ else
+ *status = POWER_SUPPLY_STATUS_DISCHARGING;
+
+ return 0;
+}
+
+static int rt9471_get_vbus_good(struct rt9471_chip *chip, int *stat)
+{
+ unsigned int vbus_gd;
+ int ret;
+
+ ret = regmap_field_read(chip->rm_fields[F_ST_VBUS_GD], &vbus_gd);
+ if (ret)
+ return ret;
+
+ *stat = vbus_gd;
+ return 0;
+}
+
+static int rt9471_get_usb_type(struct rt9471_chip *chip, int *usb_type)
+{
+ mutex_lock(&chip->var_lock);
+ *usb_type = chip->psy_usb_type;
+ mutex_unlock(&chip->var_lock);
+
+ return 0;
+}
+
+static int rt9471_get_usb_type_current(struct rt9471_chip *chip,
+ int *microamp)
+{
+ mutex_lock(&chip->var_lock);
+ *microamp = chip->psy_usb_curr;
+ mutex_unlock(&chip->var_lock);
+
+ return 0;
+}
+
+static enum power_supply_property rt9471_charger_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,
+ POWER_SUPPLY_PROP_MODEL_NAME,
+ POWER_SUPPLY_PROP_MANUFACTURER,
+};
+
+static enum power_supply_usb_type rt9471_charger_usb_types[] = {
+ POWER_SUPPLY_USB_TYPE_UNKNOWN,
+ POWER_SUPPLY_USB_TYPE_SDP,
+ POWER_SUPPLY_USB_TYPE_DCP,
+ POWER_SUPPLY_USB_TYPE_CDP,
+ POWER_SUPPLY_USB_TYPE_APPLE_BRICK_ID,
+};
+
+static int rt9471_charger_property_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_PRECHARGE_CURRENT:
+ case POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT:
+ return 1;
+ default:
+ return 0;
+ }
+}
+
+static int rt9471_charger_set_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ const union power_supply_propval *val)
+{
+ struct rt9471_chip *chip = power_supply_get_drvdata(psy);
+ int value = val->intval;
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_STATUS:
+ return regmap_field_write(chip->rm_fields[F_CHG_EN], !!value);
+ case POWER_SUPPLY_PROP_ONLINE:
+ return regmap_field_write(chip->rm_fields[F_HZ], !value);
+ case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT:
+ return rt9471_set_value_by_field_range(chip, F_ICHG_REG, RT9471_RANGE_ICHG, value);
+ case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE:
+ return rt9471_set_value_by_field_range(chip, F_VBAT_REG, RT9471_RANGE_VCHG, value);
+ case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT:
+ return rt9471_set_value_by_field_range(chip, F_AICR, RT9471_RANGE_AICR, value);
+ case POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT:
+ return rt9471_set_value_by_field_range(chip, F_MIVR, RT9471_RANGE_MIVR, value);
+ case POWER_SUPPLY_PROP_PRECHARGE_CURRENT:
+ return rt9471_set_value_by_field_range(chip, F_IPRE_CHG, RT9471_RANGE_IPRE, value);
+ case POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT:
+ return rt9471_set_ieoc(chip, val->intval);
+ default:
+ return -EINVAL;
+ }
+}
+
+static const char * const rt9471_manufacturer = "Richtek Technology Corp.";
+static const char * const rt9471_model = "RT9471";
+
+static int rt9471_charger_get_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ struct rt9471_chip *chip = power_supply_get_drvdata(psy);
+ int *pvalue = &val->intval;
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_STATUS:
+ return rt9471_get_status(chip, pvalue);
+ case POWER_SUPPLY_PROP_ONLINE:
+ return rt9471_get_vbus_good(chip, pvalue);
+ case POWER_SUPPLY_PROP_CURRENT_MAX:
+ return rt9471_get_usb_type_current(chip, pvalue);
+ case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT:
+ return rt9471_get_value_by_field_range(chip, F_ICHG_REG, RT9471_RANGE_ICHG, pvalue);
+ case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX:
+ *pvalue = RT9471_ICHG_MAXUA;
+ return 0;
+ case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE:
+ return rt9471_get_value_by_field_range(chip, F_VBAT_REG, RT9471_RANGE_VCHG, pvalue);
+ case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX:
+ val->intval = RT9471_VCHG_MAXUV;
+ return 0;
+ case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT:
+ return rt9471_get_value_by_field_range(chip, F_AICR, RT9471_RANGE_AICR, pvalue);
+ case POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT:
+ return rt9471_get_value_by_field_range(chip, F_MIVR, RT9471_RANGE_MIVR, pvalue);
+ case POWER_SUPPLY_PROP_USB_TYPE:
+ return rt9471_get_usb_type(chip, pvalue);
+ case POWER_SUPPLY_PROP_PRECHARGE_CURRENT:
+ return rt9471_get_value_by_field_range(chip, F_IPRE_CHG, RT9471_RANGE_IPRE, pvalue);
+ case POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT:
+ return rt9471_get_ieoc(chip, pvalue);
+ case POWER_SUPPLY_PROP_MODEL_NAME:
+ val->strval = rt9471_model;
+ return 0;
+ case POWER_SUPPLY_PROP_MANUFACTURER:
+ val->strval = rt9471_manufacturer;
+ return 0;
+ default:
+ return -ENODATA;
+ }
+}
+
+static irqreturn_t rt9471_vbus_gd_handler(int irqno, void *devid)
+{
+ struct rt9471_chip *chip = devid;
+
+ power_supply_changed(chip->psy);
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t rt9471_detach_handler(int irqno, void *devid)
+{
+ struct rt9471_chip *chip = devid;
+ unsigned int vbus_gd;
+ int ret;
+
+ ret = regmap_field_read(chip->rm_fields[F_ST_VBUS_GD], &vbus_gd);
+ if (ret)
+ return IRQ_NONE;
+
+ /* Only focus on really detached */
+ if (vbus_gd)
+ return IRQ_HANDLED;
+
+ mutex_lock(&chip->var_lock);
+ chip->psy_usb_type = POWER_SUPPLY_USB_TYPE_UNKNOWN;
+ chip->psy_usb_curr = 0;
+ mutex_unlock(&chip->var_lock);
+
+ power_supply_changed(chip->psy);
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t rt9471_bc12_done_handler(int irqno, void *devid)
+{
+ struct rt9471_chip *chip = devid;
+ enum power_supply_usb_type usb_type;
+ unsigned int port_stat;
+ int usb_curr, ret;
+
+ ret = regmap_field_read(chip->rm_fields[F_PORT_STAT], &port_stat);
+ if (ret)
+ return IRQ_NONE;
+
+ switch (port_stat) {
+ case RT9471_PORTSTAT_APPLE_10W:
+ usb_type = POWER_SUPPLY_USB_TYPE_APPLE_BRICK_ID;
+ usb_curr = 2000000;
+ break;
+ case RT9471_PORTSTAT_APPLE_5W:
+ usb_type = POWER_SUPPLY_USB_TYPE_APPLE_BRICK_ID;
+ usb_curr = 1000000;
+ break;
+ case RT9471_PORTSTAT_APPLE_12W:
+ usb_type = POWER_SUPPLY_USB_TYPE_APPLE_BRICK_ID;
+ usb_curr = 2400000;
+ break;
+ case RT9471_PORTSTAT_SAMSUNG_10W:
+ usb_type = POWER_SUPPLY_USB_TYPE_DCP;
+ usb_curr = 2000000;
+ break;
+ case RT9471_PORTSTAT_DCP:
+ usb_type = POWER_SUPPLY_USB_TYPE_DCP;
+ usb_curr = 1500000;
+ break;
+ case RT9471_PORTSTAT_NSTD:
+ case RT9471_PORTSTAT_SDP:
+ usb_type = POWER_SUPPLY_USB_TYPE_SDP;
+ usb_curr = 500000;
+ break;
+ case RT9471_PORTSTAT_CDP:
+ usb_type = POWER_SUPPLY_USB_TYPE_CDP;
+ usb_curr = 1500000;
+ break;
+ default:
+ usb_type = POWER_SUPPLY_USB_TYPE_UNKNOWN;
+ usb_curr = 0;
+ break;
+ }
+
+ mutex_lock(&chip->var_lock);
+ chip->psy_usb_type = usb_type;
+ chip->psy_usb_curr = usb_curr;
+ mutex_unlock(&chip->var_lock);
+
+ power_supply_changed(chip->psy);
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t rt9471_wdt_handler(int irqno, void *devid)
+{
+ struct rt9471_chip *chip = devid;
+ int ret;
+
+ ret = regmap_field_write(chip->rm_fields[F_WDT_RST], 1);
+
+ return ret ? IRQ_NONE : IRQ_HANDLED;
+}
+
+static irqreturn_t rt9471_otg_fault_handler(int irqno, void *devid)
+{
+ struct rt9471_chip *chip = devid;
+
+ regulator_notifier_call_chain(chip->otg_rdev, REGULATOR_EVENT_FAIL, NULL);
+
+ return IRQ_HANDLED;
+}
+
+#define RT9471_IRQ_DESC(_name, _hwirq) \
+{ \
+ .name = #_name, \
+ .hwirq = _hwirq, \
+ .handler = rt9471_##_name##_handler, \
+}
+
+static int rt9471_register_interrupts(struct rt9471_chip *chip)
+{
+ struct device *dev = chip->dev;
+ static const struct {
+ char *name;
+ int hwirq;
+ irq_handler_t handler;
+ } chg_irqs[] = {
+ RT9471_IRQ_DESC(vbus_gd, RT9471_IRQ_VBUS_GD),
+ RT9471_IRQ_DESC(detach, RT9471_IRQ_DETACH),
+ RT9471_IRQ_DESC(bc12_done, RT9471_IRQ_BC12_DONE),
+ RT9471_IRQ_DESC(wdt, RT9471_IRQ_WDT),
+ RT9471_IRQ_DESC(otg_fault, RT9471_IRQ_OTG_FAULT),
+ }, *curr;
+ int i, virq, ret;
+
+ for (i = 0; i < ARRAY_SIZE(chg_irqs); i++) {
+ curr = chg_irqs + i;
+
+ virq = regmap_irq_get_virq(chip->irq_chip_data, curr->hwirq);
+ if (virq <= 0)
+ return virq;
+
+ ret = devm_request_threaded_irq(dev, virq, NULL, curr->handler,
+ IRQF_ONESHOT, curr->name, chip);
+ if (ret)
+ return dev_err_probe(dev, ret, "Failed to register IRQ (%s)\n",
+ curr->name);
+ }
+
+ return 0;
+}
+
+static const struct regulator_ops rt9471_otg_ops = {
+ .enable = regulator_enable_regmap,
+ .disable = regulator_disable_regmap,
+ .is_enabled = regulator_is_enabled_regmap,
+ .list_voltage = regulator_list_voltage_linear,
+ .get_voltage_sel = regulator_get_voltage_sel_regmap,
+ .set_voltage_sel = regulator_set_voltage_sel_regmap,
+ .set_current_limit = regulator_set_current_limit_regmap,
+ .get_current_limit = regulator_get_current_limit_regmap,
+};
+
+static const unsigned int rt9471_otg_microamp[] = { 500000, 1200000, };
+
+static const struct regulator_desc rt9471_otg_rdesc = {
+ .of_match = of_match_ptr("usb-otg-vbus-regulator"),
+ .name = "rt9471-otg-vbus",
+ .owner = THIS_MODULE,
+ .type = REGULATOR_VOLTAGE,
+ .ops = &rt9471_otg_ops,
+ .min_uV = RT9471_OTGCV_MINUV,
+ .uV_step = RT9471_OTGCV_STEPUV,
+ .n_voltages = RT9471_NUM_VOTG,
+ .curr_table = rt9471_otg_microamp,
+ .n_current_limits = ARRAY_SIZE(rt9471_otg_microamp),
+ .enable_mask = RT9471_OTGEN_MASK,
+ .enable_reg = RT9471_REG_FUNC,
+ .vsel_reg = RT9471_REG_OTGCFG,
+ .vsel_mask = RT9471_OTGCV_MASK,
+ .csel_reg = RT9471_REG_OTGCFG,
+ .csel_mask = RT9471_OTGCC_MASK,
+};
+
+static int rt9471_register_otg_regulator(struct rt9471_chip *chip)
+{
+ struct device *dev = chip->dev;
+ struct regulator_config cfg = { .dev = dev, .driver_data = chip };
+
+ chip->otg_rdev = devm_regulator_register(dev, &rt9471_otg_rdesc, &cfg);
+
+ return PTR_ERR_OR_ZERO(chip->otg_rdev);
+}
+
+static inline struct rt9471_chip *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 rt9471_chip *chip = psy_device_to_chip(dev);
+ unsigned int sysoff_enable;
+ int ret;
+
+ ret = regmap_field_read(chip->rm_fields[F_BATFET_DIS], &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 rt9471_chip *chip = psy_device_to_chip(dev);
+ unsigned int tmp;
+ int ret;
+
+ ret = kstrtouint(buf, 10, &tmp);
+ if (ret)
+ return ret;
+
+ ret = regmap_field_write(chip->rm_fields[F_BATFET_DIS], !!tmp);
+ if (ret)
+ return ret;
+
+ return count;
+}
+
+static ssize_t port_detect_enable_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct rt9471_chip *chip = psy_device_to_chip(dev);
+ unsigned int bc12_enable;
+ int ret;
+
+ ret = regmap_field_read(chip->rm_fields[F_BC12_EN], &bc12_enable);
+ if (ret)
+ return ret;
+
+ return sysfs_emit(buf, "%d\n", bc12_enable);
+}
+
+static ssize_t port_detect_enable_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct rt9471_chip *chip = psy_device_to_chip(dev);
+ unsigned int tmp;
+ int ret;
+
+ ret = kstrtouint(buf, 10, &tmp);
+ if (ret)
+ return ret;
+
+ ret = regmap_field_write(chip->rm_fields[F_BC12_EN], !!tmp);
+ if (ret)
+ return ret;
+
+ return count;
+}
+
+static DEVICE_ATTR_RW(sysoff_enable);
+static DEVICE_ATTR_RW(port_detect_enable);
+
+static struct attribute *rt9471_sysfs_attrs[] = {
+ &dev_attr_sysoff_enable.attr,
+ &dev_attr_port_detect_enable.attr,
+ NULL
+};
+
+ATTRIBUTE_GROUPS(rt9471_sysfs);
+
+static int rt9471_register_psy(struct rt9471_chip *chip)
+{
+ struct device *dev = chip->dev;
+ struct power_supply_desc *desc = &chip->psy_desc;
+ struct power_supply_config cfg = {};
+ char *psy_name;
+
+ cfg.drv_data = chip;
+ cfg.of_node = dev->of_node;
+ cfg.attr_grp = rt9471_sysfs_groups;
+
+ psy_name = devm_kasprintf(dev, GFP_KERNEL, "rt9471-%s", dev_name(dev));
+ if (!psy_name)
+ return -ENOMEM;
+
+ desc->name = psy_name;
+ desc->type = POWER_SUPPLY_TYPE_USB;
+ desc->usb_types = rt9471_charger_usb_types;
+ desc->num_usb_types = ARRAY_SIZE(rt9471_charger_usb_types);
+ desc->properties = rt9471_charger_properties;
+ desc->num_properties = ARRAY_SIZE(rt9471_charger_properties);
+ desc->get_property = rt9471_charger_get_property;
+ desc->set_property = rt9471_charger_set_property;
+ desc->property_is_writeable = rt9471_charger_property_is_writeable;
+
+ chip->psy = devm_power_supply_register(dev, desc, &cfg);
+
+ return PTR_ERR_OR_ZERO(chip->psy);
+}
+
+static const struct regmap_irq rt9471_regmap_irqs[] = {
+ REGMAP_IRQ_REG_LINE(RT9471_IRQ_BC12_DONE, 8),
+ REGMAP_IRQ_REG_LINE(RT9471_IRQ_DETACH, 8),
+ REGMAP_IRQ_REG_LINE(RT9471_IRQ_RECHG, 8),
+ REGMAP_IRQ_REG_LINE(RT9471_IRQ_CHG_DONE, 8),
+ REGMAP_IRQ_REG_LINE(RT9471_IRQ_BG_CHG, 8),
+ REGMAP_IRQ_REG_LINE(RT9471_IRQ_IE0C, 8),
+ REGMAP_IRQ_REG_LINE(RT9471_IRQ_CHG_RDY, 8),
+ REGMAP_IRQ_REG_LINE(RT9471_IRQ_VBUS_GD, 8),
+ REGMAP_IRQ_REG_LINE(RT9471_IRQ_CHG_BATOV, 8),
+ REGMAP_IRQ_REG_LINE(RT9471_IRQ_CHG_SYSOV, 8),
+ REGMAP_IRQ_REG_LINE(RT9471_IRQ_CHG_TOUT, 8),
+ REGMAP_IRQ_REG_LINE(RT9471_IRQ_CHG_BUSUV, 8),
+ REGMAP_IRQ_REG_LINE(RT9471_IRQ_CHG_THREG, 8),
+ REGMAP_IRQ_REG_LINE(RT9471_IRQ_CHG_AICR, 8),
+ REGMAP_IRQ_REG_LINE(RT9471_IRQ_CHG_MIVR, 8),
+ REGMAP_IRQ_REG_LINE(RT9471_IRQ_SYS_SHORT, 8),
+ REGMAP_IRQ_REG_LINE(RT9471_IRQ_SYS_MIN, 8),
+ REGMAP_IRQ_REG_LINE(RT9471_IRQ_AICC_DONE, 8),
+ REGMAP_IRQ_REG_LINE(RT9471_IRQ_PE_DONE, 8),
+ REGMAP_IRQ_REG_LINE(RT9471_IRQ_JEITA_COLD, 8),
+ REGMAP_IRQ_REG_LINE(RT9471_IRQ_JEITA_COOL, 8),
+ REGMAP_IRQ_REG_LINE(RT9471_IRQ_JEITA_WARM, 8),
+ REGMAP_IRQ_REG_LINE(RT9471_IRQ_JEITA_HOT, 8),
+ REGMAP_IRQ_REG_LINE(RT9471_IRQ_OTG_FAULT, 8),
+ REGMAP_IRQ_REG_LINE(RT9471_IRQ_OTG_LBP, 8),
+ REGMAP_IRQ_REG_LINE(RT9471_IRQ_OTG_CC, 8),
+ REGMAP_IRQ_REG_LINE(RT9471_IRQ_WDT, 8),
+ REGMAP_IRQ_REG_LINE(RT9471_IRQ_VAC_OV, 8),
+ REGMAP_IRQ_REG_LINE(RT9471_IRQ_OTP, 8),
+};
+
+static const struct regmap_irq_chip rt9471_irq_chip = {
+ .name = "rt9471-irqs",
+ .status_base = RT9471_REG_IRQ0,
+ .mask_base = RT9471_REG_MASK0,
+ .num_regs = RT9471_NUM_IRQ_REGS,
+ .irqs = rt9471_regmap_irqs,
+ .num_irqs = ARRAY_SIZE(rt9471_regmap_irqs),
+};
+
+static const struct reg_sequence rt9471_init_regs[] = {
+ REG_SEQ0(RT9471_REG_INFO, 0x80), /* REG_RST */
+ REG_SEQ0(RT9471_REG_TOP, 0xC0), /* WDT = 0 */
+ REG_SEQ0(RT9471_REG_FUNC, 0x01), /* BATFET_DIS_DLY = 0 */
+ REG_SEQ0(RT9471_REG_IBUS, 0x0A), /* AUTO_AICR = 0 */
+ REG_SEQ0(RT9471_REG_VBUS, 0xC6), /* VAC_OVP = 14V */
+ REG_SEQ0(RT9471_REG_JEITA, 0x38), /* JEITA = 0 */
+ REG_SEQ0(RT9471_REG_DPDMDET, 0x31), /* BC12_EN = 0, DCP_DP_OPT = 1 */
+};
+
+static int rt9471_check_devinfo(struct rt9471_chip *chip)
+{
+ struct device *dev = chip->dev;
+ unsigned int dev_id;
+ int ret;
+
+ ret = regmap_field_read(chip->rm_fields[F_DEVICE_ID], &dev_id);
+ if (ret)
+ return dev_err_probe(dev, ret, "Failed to read device_id\n");
+
+ switch (dev_id) {
+ case RT9470_DEVID:
+ case RT9470D_DEVID:
+ case RT9471_DEVID:
+ case RT9471D_DEVID:
+ return 0;
+ default:
+ return dev_err_probe(dev, -ENODEV, "Incorrect device id\n");
+ }
+}
+
+static bool rt9471_accessible_reg(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case 0x00 ... 0x0F:
+ case 0x10 ... 0x13:
+ case 0x20 ... 0x33:
+ case 0x40 ... 0xA1:
+ return true;
+ default:
+ return false;
+ }
+}
+
+static const struct regmap_config rt9471_regmap_config = {
+ .reg_bits = 8,
+ .val_bits = 8,
+ .max_register = 0xA1,
+ .writeable_reg = rt9471_accessible_reg,
+ .readable_reg = rt9471_accessible_reg,
+};
+
+static int rt9471_probe(struct i2c_client *i2c)
+{
+ struct device *dev = &i2c->dev;
+ struct rt9471_chip *chip;
+ struct gpio_desc *ce_gpio;
+ struct regmap *regmap;
+ int ret;
+
+ chip = devm_kzalloc(dev, sizeof(*chip), GFP_KERNEL);
+ if (!chip)
+ return -ENOMEM;
+
+ chip->dev = dev;
+ mutex_init(&chip->var_lock);
+ i2c_set_clientdata(i2c, chip);
+
+ /* Default pull charge enable gpio to make 'CHG_EN' by SW control only */
+ ce_gpio = devm_gpiod_get_optional(dev, "charge-enable", GPIOD_OUT_HIGH);
+ if (IS_ERR(ce_gpio))
+ return dev_err_probe(dev, PTR_ERR(ce_gpio),
+ "Failed to config charge enable gpio\n");
+
+ regmap = devm_regmap_init_i2c(i2c, &rt9471_regmap_config);
+ if (IS_ERR(regmap))
+ return dev_err_probe(dev, PTR_ERR(regmap), "Failed to init regmap\n");
+
+ chip->regmap = regmap;
+
+ ret = devm_regmap_field_bulk_alloc(dev, regmap, chip->rm_fields,
+ rt9471_reg_fields,
+ ARRAY_SIZE(rt9471_reg_fields));
+ if (ret)
+ return dev_err_probe(dev, ret, "Failed to alloc regmap field\n");
+
+ ret = rt9471_check_devinfo(chip);
+ if (ret)
+ return ret;
+
+ ret = regmap_register_patch(regmap, rt9471_init_regs,
+ ARRAY_SIZE(rt9471_init_regs));
+ if (ret)
+ return dev_err_probe(dev, ret, "Failed to init registers\n");
+
+ ret = devm_regmap_add_irq_chip(dev, regmap, i2c->irq,
+ IRQF_TRIGGER_FALLING | IRQF_ONESHOT, 0,
+ &rt9471_irq_chip, &chip->irq_chip_data);
+ if (ret)
+ return dev_err_probe(dev, ret, "Failed to add IRQ chip\n");
+
+ ret = rt9471_register_psy(chip);
+ if (ret)
+ return dev_err_probe(dev, ret, "Failed to register psy\n");
+
+ ret = rt9471_register_otg_regulator(chip);
+ if (ret)
+ return dev_err_probe(dev, ret, "Failed to register otg\n");
+
+ ret = rt9471_register_interrupts(chip);
+ if (ret)
+ return ret;
+
+ /* After IRQs are all initialized, enable port detection by default */
+ return regmap_field_write(chip->rm_fields[F_BC12_EN], 1);
+}
+
+static void rt9471_shutdown(struct i2c_client *i2c)
+{
+ struct rt9471_chip *chip = i2c_get_clientdata(i2c);
+
+ /*
+ * There's no external reset pin. Do register reset to guarantee charger
+ * function is normal after shutdown
+ */
+ regmap_field_write(chip->rm_fields[F_REG_RST], 1);
+}
+
+static const struct of_device_id rt9471_of_device_id[] = {
+ { .compatible = "richtek,rt9471" },
+ {}
+};
+MODULE_DEVICE_TABLE(of, rt9471_of_device_id);
+
+static struct i2c_driver rt9471_driver = {
+ .driver = {
+ .name = "rt9471",
+ .of_match_table = rt9471_of_device_id,
+ },
+ .probe_new = rt9471_probe,
+ .shutdown = rt9471_shutdown,
+};
+module_i2c_driver(rt9471_driver);
+
+MODULE_DESCRIPTION("Richtek RT9471 charger driver");
+MODULE_AUTHOR("Alina Yu <alina_yu@richtek.com>");
+MODULE_AUTHOR("ChiYuan Huang <cy_huang@richtek.com>");
+MODULE_LICENSE("GPL");
char buf[MAX_KEYLENGTH];
int cr;
- strncpy(buf, key, MAX_KEYLENGTH);
- buf[MAX_KEYLENGTH-1] = '\0';
+ strscpy(buf, key, MAX_KEYLENGTH);
cr = strnlen(buf, MAX_KEYLENGTH) - 1;
if (cr < 0)
for (i = 0; i < ARRAY_SIZE(modes); i++)
if (mode == i)
- len += scnprintf(buf+len, PAGE_SIZE-len,
- "[%s] ", modes[i]);
+ len += sysfs_emit_at(buf, len, "[%s] ", modes[i]);
else
- len += scnprintf(buf+len, PAGE_SIZE-len,
- "%s ", modes[i]);
+ len += sysfs_emit_at(buf, len, "%s ", modes[i]);
buf[len-1] = '\n';
return len;
}
return 0;
}
- return sprintf(buf, "%s\n", charge);
+ return sysfs_emit(buf, "%s\n", charge);
}
static DEVICE_ATTR_RO(charger_state);
projects / platform / kernel / linux-starfive.git / commitdiff