diff options
| -rw-r--r-- | Documentation/ABI/testing/sysfs-class-power-rt9756 | 30 | ||||
| -rw-r--r-- | Documentation/devicetree/bindings/power/supply/richtek,rt9756.yaml | 72 | ||||
| -rw-r--r-- | Documentation/power/power_supply_class.rst | 84 | ||||
| -rw-r--r-- | MAINTAINERS | 6 | ||||
| -rw-r--r-- | drivers/power/reset/Kconfig | 9 | ||||
| -rw-r--r-- | drivers/power/reset/Makefile | 1 | ||||
| -rw-r--r-- | drivers/power/reset/spacemit-p1-reboot.c | 88 | ||||
| -rw-r--r-- | drivers/power/supply/Kconfig | 24 | ||||
| -rw-r--r-- | drivers/power/supply/Makefile | 2 | ||||
| -rw-r--r-- | drivers/power/supply/apm_power.c | 3 | ||||
| -rw-r--r-- | drivers/power/supply/bd71828-power.c | 1049 | ||||
| -rw-r--r-- | drivers/power/supply/cw2015_battery.c | 8 | ||||
| -rw-r--r-- | drivers/power/supply/max17040_battery.c | 6 | ||||
| -rw-r--r-- | drivers/power/supply/max77705_charger.c | 56 | ||||
| -rw-r--r-- | drivers/power/supply/qcom_battmgr.c | 14 | ||||
| -rw-r--r-- | drivers/power/supply/rt5033_charger.c | 2 | ||||
| -rw-r--r-- | drivers/power/supply/rt9467-charger.c | 6 | ||||
| -rw-r--r-- | drivers/power/supply/rt9756.c | 955 | ||||
| -rw-r--r-- | drivers/power/supply/wm831x_power.c | 10 | ||||
| -rw-r--r-- | include/linux/power/max77705_charger.h | 2 |
20 files changed, 2363 insertions, 64 deletions
diff --git a/Documentation/ABI/testing/sysfs-class-power-rt9756 b/Documentation/ABI/testing/sysfs-class-power-rt9756 new file mode 100644 index 000000000000..c4d6c2b4715d --- /dev/null +++ b/Documentation/ABI/testing/sysfs-class-power-rt9756 @@ -0,0 +1,30 @@ +What: /sys/class/power_supply/rt9756-*/watchdog_timer +Date: Dec 2025 +KernelVersion: 6.19 +Contact: ChiYuan Huang <cy_huang@richtek.com> +Description: + This entry shows and sets the watchdog timer when rt9756 charger + operates in charging mode. When the timer expires, the device + will disable the charging. To prevent the timer expires, any + host communication can make the timer restarted. + + Access: Read, Write + + Valid values: + - 500, 1000, 5000, 30000, 40000, 80000, 128000 or 255000 (milliseconds), + - 0: disabled + +What: /sys/class/power_supply/rt9756-*/operation_mode +Date: Dec 2025 +KernelVersion: 6.19 +Contact: ChiYuan Huang <cy_huang@richtek.com> +Description: + This entry shows and set the operation mode when rt9756 charger + operates in charging phase. If 'bypass' mode is used, internal + path will connect vbus directly to vbat. Else, default 'div2' + mode for the switch-cap charging. + + Access: Read, Write + + Valid values: + - 'bypass' or 'div2' diff --git a/Documentation/devicetree/bindings/power/supply/richtek,rt9756.yaml b/Documentation/devicetree/bindings/power/supply/richtek,rt9756.yaml new file mode 100644 index 000000000000..a88bf6cd1927 --- /dev/null +++ b/Documentation/devicetree/bindings/power/supply/richtek,rt9756.yaml @@ -0,0 +1,72 @@ +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/power/supply/richtek,rt9756.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Richtek RT9756 Smart Cap Divider Charger + +maintainers: + - ChiYuan Huang <cy_huang@richtek.com> + +description: | + The RT9756/RT9757 is a high efficiency and high charge current charger. + + The efficiency is up to 98.2% when VBAT = 4V, IBAT = 2A in DIV2 mode and 99.1% + when VBAT=4V, IBAT=1A in bypass mode. The maximum charger current is up to 8A + in DIV2 mode and 5A in bypass mode. The device integrates smart cap divider + topology, direct charging mode, external over-voltage protection control, an + input reverse blocking NFET and 2-way regulation, a dual phase charge pump + core, 8-Channel high speed ADCs and USB BC 1.2 detection. + + RT9770 is almost the same with RT9756/57, only BC 1.2 detection function is + removed to shrink the die size. + +allOf: + - $ref: power-supply.yaml# + +properties: + compatible: + oneOf: + - enum: + - richtek,rt9756 + - richtek,rt9770 + - items: + - enum: + - richtek,rt9757 + - const: richtek,rt9756 + + reg: + maxItems: 1 + + wakeup-source: true + + interrupts: + maxItems: 1 + + shunt-resistor-micro-ohms: + description: Battery current sense resistor mounted. + default: 2000 + +required: + - compatible + - reg + - interrupts + +unevaluatedProperties: false + +examples: + - | + #include <dt-bindings/interrupt-controller/irq.h> + i2c { + #address-cells = <1>; + #size-cells = <0>; + + charger@6f { + compatible = "richtek,rt9756"; + reg = <0x6f>; + wakeup-source; + interrupts-extended = <&gpio_intc 32 IRQ_TYPE_EDGE_FALLING>; + shunt-resistor-micro-ohms = <5000>; + }; + }; diff --git a/Documentation/power/power_supply_class.rst b/Documentation/power/power_supply_class.rst index da8e275a14ff..6d11f8c594a0 100644 --- a/Documentation/power/power_supply_class.rst +++ b/Documentation/power/power_supply_class.rst @@ -7,35 +7,35 @@ Synopsis Power supply class used to represent battery, UPS, AC or DC power supply properties to user-space. -It defines core set of attributes, which should be applicable to (almost) +It defines a core set of attributes which should be applicable to (almost) every power supply out there. Attributes are available via sysfs and uevent interfaces. -Each attribute has well defined meaning, up to unit of measure used. While +Each attribute has a well-defined meaning, up to the unit of measure used. While the attributes provided are believed to be universally applicable to any power supply, specific monitoring hardware may not be able to provide them all, so any of them may be skipped. -Power supply class is extensible, and allows to define drivers own attributes. -The core attribute set is subject to the standard Linux evolution (i.e. -if it will be found that some attribute is applicable to many power supply -types or their drivers, it can be added to the core set). +The power supply class is extensible and allows drivers to define their own +attributes. The core attribute set is subject to the standard Linux evolution +(i.e., if some attribute is found to be applicable to many power +supply types or their drivers, it can be added to the core set). -It also integrates with LED framework, for the purpose of providing +It also integrates with the LED framework, for the purpose of providing typically expected feedback of battery charging/fully charged status and AC/USB power supply online status. (Note that specific details of the indication (including whether to use it at all) are fully controllable by -user and/or specific machine defaults, per design principles of LED -framework). +user and/or specific machine defaults, per design principles of the LED +framework.) Attributes/properties ~~~~~~~~~~~~~~~~~~~~~ -Power supply class has predefined set of attributes, this eliminates code -duplication across drivers. Power supply class insist on reusing its +The power supply class has a predefined set of attributes. This eliminates code +duplication across drivers. The power supply class insists on reusing its predefined attributes *and* their units. -So, userspace gets predictable set of attributes and their units for any +So, userspace gets a predictable set of attributes and their units for any kind of power supply, and can process/present them to a user in consistent manner. Results for different power supplies and machines are also directly comparable. @@ -61,7 +61,7 @@ Attributes/properties detailed | **Charge/Energy/Capacity - how to not confuse** | +--------------------------------------------------------------------------+ | **Because both "charge" (µAh) and "energy" (µWh) represents "capacity" | -| of battery, this class distinguish these terms. Don't mix them!** | +| of battery, this class distinguishes these terms. Don't mix them!** | | | | - `CHARGE_*` | | attributes represents capacity in µAh only. | @@ -81,7 +81,7 @@ _NOW STATUS this attribute represents operating status (charging, full, - discharging (i.e. powering a load), etc.). This corresponds to + discharging (i.e., powering a load), etc.). This corresponds to `BATTERY_STATUS_*` values, as defined in battery.h. CHARGE_TYPE @@ -92,10 +92,10 @@ CHARGE_TYPE AUTHENTIC indicates the power supply (battery or charger) connected - to the platform is authentic(1) or non authentic(0). + to the platform is authentic(1) or non-authentic(0). HEALTH - represents health of the battery, values corresponds to + represents health of the battery. Values corresponds to POWER_SUPPLY_HEALTH_*, defined in battery.h. VOLTAGE_OCV @@ -103,11 +103,11 @@ VOLTAGE_OCV VOLTAGE_MAX_DESIGN, VOLTAGE_MIN_DESIGN design values for maximal and minimal power supply voltages. - Maximal/minimal means values of voltages when battery considered + Maximal/minimal means values of voltages when battery is considered "full"/"empty" at normal conditions. Yes, there is no direct relation between voltage and battery capacity, but some dumb batteries use voltage for very approximated calculation of capacity. - Battery driver also can use this attribute just to inform userspace + A battery driver also can use this attribute just to inform userspace about maximal and minimal voltage thresholds of a given battery. VOLTAGE_MAX, VOLTAGE_MIN @@ -122,16 +122,16 @@ CURRENT_BOOT Reports the current measured during boot CHARGE_FULL_DESIGN, CHARGE_EMPTY_DESIGN - design charge values, when battery considered full/empty. + design charge values, when battery is considered full/empty. ENERGY_FULL_DESIGN, ENERGY_EMPTY_DESIGN same as above but for energy. CHARGE_FULL, CHARGE_EMPTY - These attributes means "last remembered value of charge when battery - became full/empty". It also could mean "value of charge when battery + These attributes mean "last remembered value of charge when battery + became full/empty". They also could mean "value of charge when battery is considered full/empty at given conditions (temperature, age)". - I.e. these attributes represents real thresholds, not design values. + I.e., these attributes represents real thresholds, not design values. ENERGY_FULL, ENERGY_EMPTY same as above but for energy. @@ -153,12 +153,12 @@ CHARGE_TERM_CURRENT CONSTANT_CHARGE_CURRENT constant charge current programmed by charger. - CONSTANT_CHARGE_CURRENT_MAX maximum charge current supported by the power supply object. CONSTANT_CHARGE_VOLTAGE constant charge voltage programmed by charger. + CONSTANT_CHARGE_VOLTAGE_MAX maximum charge voltage supported by the power supply object. @@ -208,10 +208,10 @@ TEMP_MAX TIME_TO_EMPTY seconds left for battery to be considered empty - (i.e. while battery powers a load) + (i.e., while battery powers a load) TIME_TO_FULL seconds left for battery to be considered full - (i.e. while battery is charging) + (i.e., while battery is charging) Battery <-> external power supply interaction @@ -220,13 +220,13 @@ Often power supplies are acting as supplies and supplicants at the same time. Batteries are good example. So, batteries usually care if they're externally powered or not. -For that case, power supply class implements notification mechanism for +For that case, the power supply class implements a notification mechanism for batteries. -External power supply (AC) lists supplicants (batteries) names in +An external power supply (AC) lists supplicants (batteries) names in "supplied_to" struct member, and each power_supply_changed() call -issued by external power supply will notify supplicants via -external_power_changed callback. +issued by an external power supply will notify supplicants via +the external_power_changed callback. Devicetree battery characteristics @@ -241,14 +241,14 @@ battery node have names corresponding to elements in enum power_supply_property, for naming consistency between sysfs attributes and battery node properties. -QA -~~ +Q&A +~~~ Q: Where is POWER_SUPPLY_PROP_XYZ attribute? A: - If you cannot find attribute suitable for your driver needs, feel free - to add it and send patch along with your driver. + If you cannot find an attribute suitable for your driver needs, feel free + to add it and send a patch along with your driver. The attributes available currently are the ones currently provided by the drivers written. @@ -258,18 +258,18 @@ A: Q: - I have some very specific attribute (e.g. battery color), should I add + I have some very specific attribute (e.g., battery color). Should I add this attribute to standard ones? A: Most likely, no. Such attribute can be placed in the driver itself, if - it is useful. Of course, if the attribute in question applicable to - large set of batteries, provided by many drivers, and/or comes from + it is useful. Of course, if the attribute in question is applicable to + a large set of batteries, provided by many drivers, and/or comes from some general battery specification/standard, it may be a candidate to be added to the core attribute set. Q: - Suppose, my battery monitoring chip/firmware does not provides capacity + Suppose my battery monitoring chip/firmware does not provide capacity in percents, but provides charge_{now,full,empty}. Should I calculate percentage capacity manually, inside the driver, and register CAPACITY attribute? The same question about time_to_empty/time_to_full. @@ -278,11 +278,11 @@ A: directly measurable by the specific hardware available. Inferring not available properties using some heuristics or mathematical - model is not subject of work for a battery driver. Such functionality + model is not a subject of work for a battery driver. Such functionality should be factored out, and in fact, apm_power, the driver to serve - legacy APM API on top of power supply class, uses a simple heuristic of + legacy APM API on top of the power supply class, uses a simple heuristic of approximating remaining battery capacity based on its charge, current, - voltage and so on. But full-fledged battery model is likely not subject - for kernel at all, as it would require floating point calculation to deal - with things like differential equations and Kalman filters. This is + voltage and so on. But a full-fledged battery model is likely not a subject + for the kernel at all, as it would require floating point calculations to + deal with things like differential equations and Kalman filters. This is better be handled by batteryd/libbattery, yet to be written. diff --git a/MAINTAINERS b/MAINTAINERS index 38274c51a2f7..5f1a0bf8d5b2 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -22479,6 +22479,12 @@ L: linux-serial@vger.kernel.org S: Odd Fixes F: drivers/tty/serial/rp2.* +ROHM BD71828 CHARGER +M: Andreas Kemnade <andreas@kemnade.info> +M: Matti Vaittinen <mazziesaccount@gmail.com> +S: Maintained +F: drivers/power/supply/bd71828-charger.c + ROHM BD79703 DAC M: Matti Vaittinen <mazziesaccount@gmail.com> S: Supported diff --git a/drivers/power/reset/Kconfig b/drivers/power/reset/Kconfig index 8248895ca903..f6c1bcbb57de 100644 --- a/drivers/power/reset/Kconfig +++ b/drivers/power/reset/Kconfig @@ -283,6 +283,15 @@ config POWER_RESET_KEYSTONE help Reboot support for the KEYSTONE SoCs. +config POWER_RESET_SPACEMIT_P1 + tristate "SpacemiT P1 poweroff and reset driver" + depends on ARCH_SPACEMIT || COMPILE_TEST + depends on MFD_SPACEMIT_P1 + default MFD_SPACEMIT_P1 + help + This driver supports power-off and reset operations for the SpacemiT + P1 PMIC. + config POWER_RESET_SYSCON bool "Generic SYSCON regmap reset driver" depends on OF diff --git a/drivers/power/reset/Makefile b/drivers/power/reset/Makefile index 51da87e05ce7..0e4ae6f6b5c5 100644 --- a/drivers/power/reset/Makefile +++ b/drivers/power/reset/Makefile @@ -24,6 +24,7 @@ obj-$(CONFIG_POWER_RESET_LTC2952) += ltc2952-poweroff.o obj-$(CONFIG_POWER_RESET_QNAP) += qnap-poweroff.o obj-$(CONFIG_POWER_RESET_REGULATOR) += regulator-poweroff.o obj-$(CONFIG_POWER_RESET_RESTART) += restart-poweroff.o +obj-$(CONFIG_POWER_RESET_SPACEMIT_P1) += spacemit-p1-reboot.o obj-$(CONFIG_POWER_RESET_ST) += st-poweroff.o obj-$(CONFIG_POWER_RESET_TH1520_AON) += th1520-aon-reboot.o obj-$(CONFIG_POWER_RESET_TORADEX_EC) += tdx-ec-poweroff.o diff --git a/drivers/power/reset/spacemit-p1-reboot.c b/drivers/power/reset/spacemit-p1-reboot.c new file mode 100644 index 000000000000..9ec3d1fff8f3 --- /dev/null +++ b/drivers/power/reset/spacemit-p1-reboot.c @@ -0,0 +1,88 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2025 by Aurelien Jarno + */ + +#include <linux/bits.h> +#include <linux/mod_devicetable.h> +#include <linux/platform_device.h> +#include <linux/regmap.h> +#include <linux/reboot.h> + +/* Power Control Register 2 */ +#define PWR_CTRL2 0x7e +#define PWR_CTRL2_SHUTDOWN BIT(2) /* Shutdown request */ +#define PWR_CTRL2_RST BIT(1) /* Reset request */ + +static int spacemit_p1_pwroff_handler(struct sys_off_data *data) +{ + struct regmap *regmap = data->cb_data; + int ret; + + /* Put the PMIC into shutdown state */ + ret = regmap_set_bits(regmap, PWR_CTRL2, PWR_CTRL2_SHUTDOWN); + if (ret) { + dev_err(data->dev, "shutdown failed: %d\n", ret); + return notifier_from_errno(ret); + } + + return NOTIFY_DONE; +} + +static int spacemit_p1_restart_handler(struct sys_off_data *data) +{ + struct regmap *regmap = data->cb_data; + int ret; + + /* Put the PMIC into reset state */ + ret = regmap_set_bits(regmap, PWR_CTRL2, PWR_CTRL2_RST); + if (ret) { + dev_err(data->dev, "restart failed: %d\n", ret); + return notifier_from_errno(ret); + } + + return NOTIFY_DONE; +} + +static int spacemit_p1_reboot_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct regmap *regmap; + int ret; + + regmap = dev_get_regmap(dev->parent, NULL); + if (!regmap) + return -ENODEV; + + ret = devm_register_power_off_handler(dev, &spacemit_p1_pwroff_handler, + regmap); + if (ret) + return dev_err_probe(dev, ret, + "Failed to register power off handler\n"); + + ret = devm_register_restart_handler(dev, spacemit_p1_restart_handler, + regmap); + if (ret) + return dev_err_probe(dev, ret, + "Failed to register restart handler\n"); + + return 0; +} + +static const struct platform_device_id spacemit_p1_reboot_id_table[] = { + { "spacemit-p1-reboot", }, + { /* sentinel */ }, +}; +MODULE_DEVICE_TABLE(platform, spacemit_p1_reboot_id_table); + +static struct platform_driver spacemit_p1_reboot_driver = { + .driver = { + .name = "spacemit-p1-reboot", + }, + .probe = spacemit_p1_reboot_probe, + .id_table = spacemit_p1_reboot_id_table, +}; +module_platform_driver(spacemit_p1_reboot_driver); + +MODULE_DESCRIPTION("SpacemiT P1 reboot/poweroff driver"); +MODULE_LICENSE("GPL"); diff --git a/drivers/power/supply/Kconfig b/drivers/power/supply/Kconfig index 03c8525b480f..92f9f7aae92f 100644 --- a/drivers/power/supply/Kconfig +++ b/drivers/power/supply/Kconfig @@ -942,6 +942,21 @@ config CHARGER_RT9471 This driver can also be built as a module. If so, the module will be called rt9471. +config CHARGER_RT9756 + tristate "Richtek RT9756 smart cap divider charger driver" + depends on I2C + select REGMAP_I2C + select LINEAR_RANGES + help + This adds support for Richtek RT9756 smart cap divider charger driver. + It's a high efficiency and high charge current charger. the device + integrates smart cap divider topology with 9-channel high speed + ADCs that can provide input and output voltage, current and + temperature monitoring. + + This driver can also be built as a module. If so, the module will be + called rt9756. + config CHARGER_CROS_USBPD tristate "ChromeOS EC based USBPD charger" depends on CROS_USBPD_NOTIFY @@ -1007,6 +1022,15 @@ config CHARGER_UCS1002 Say Y to enable support for Microchip UCS1002 Programmable USB Port Power Controller with Charger Emulation. +config CHARGER_BD71828 + tristate "Power-supply driver for ROHM BD71828 and BD71815 PMIC" + depends on MFD_ROHM_BD71828 + help + Say Y here to enable support for charger and battery + in ROHM BD71815, BD71817, ROHM BD71828 power management + ICs. This driver gets various bits of information about battery + and charger states. + config CHARGER_BD99954 tristate "ROHM bd99954 charger driver" depends on I2C diff --git a/drivers/power/supply/Makefile b/drivers/power/supply/Makefile index 6e37a3edf7e3..4b79d5abc49a 100644 --- a/drivers/power/supply/Makefile +++ b/drivers/power/supply/Makefile @@ -64,6 +64,7 @@ obj-$(CONFIG_CHARGER_RT5033) += rt5033_charger.o obj-$(CONFIG_CHARGER_RT9455) += rt9455_charger.o obj-$(CONFIG_CHARGER_RT9467) += rt9467-charger.o obj-$(CONFIG_CHARGER_RT9471) += rt9471.o +obj-$(CONFIG_CHARGER_RT9756) += rt9756.o obj-$(CONFIG_BATTERY_TWL4030_MADC) += twl4030_madc_battery.o obj-$(CONFIG_CHARGER_88PM860X) += 88pm860x_charger.o obj-$(CONFIG_CHARGER_PF1550) += pf1550-charger.o @@ -117,6 +118,7 @@ obj-$(CONFIG_CHARGER_SC2731) += sc2731_charger.o obj-$(CONFIG_FUEL_GAUGE_SC27XX) += sc27xx_fuel_gauge.o obj-$(CONFIG_FUEL_GAUGE_STC3117) += stc3117_fuel_gauge.o obj-$(CONFIG_CHARGER_UCS1002) += ucs1002_power.o +obj-$(CONFIG_CHARGER_BD71828) += bd71828-power.o obj-$(CONFIG_CHARGER_BD99954) += bd99954-charger.o obj-$(CONFIG_CHARGER_WILCO) += wilco-charger.o obj-$(CONFIG_RN5T618_POWER) += rn5t618_power.o diff --git a/drivers/power/supply/apm_power.c b/drivers/power/supply/apm_power.c index 9236e0078578..9933cdc5c387 100644 --- a/drivers/power/supply/apm_power.c +++ b/drivers/power/supply/apm_power.c @@ -364,7 +364,8 @@ static int __init apm_battery_init(void) static void __exit apm_battery_exit(void) { - apm_get_power_status = NULL; + if (apm_get_power_status == apm_battery_apm_get_power_status) + apm_get_power_status = NULL; } module_init(apm_battery_init); diff --git a/drivers/power/supply/bd71828-power.c b/drivers/power/supply/bd71828-power.c new file mode 100644 index 000000000000..f667baedeb77 --- /dev/null +++ b/drivers/power/supply/bd71828-power.c @@ -0,0 +1,1049 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* ROHM BD71815, BD71828 and BD71878 Charger driver */ + +#include <linux/interrupt.h> +#include <linux/kernel.h> +#include <linux/mfd/rohm-bd71815.h> +#include <linux/mfd/rohm-bd71828.h> +#include <linux/module.h> +#include <linux/mod_devicetable.h> +#include <linux/platform_device.h> +#include <linux/property.h> +#include <linux/power_supply.h> +#include <linux/slab.h> + +/* common defines */ +#define BD7182x_MASK_VBAT_U 0x1f +#define BD7182x_MASK_VDCIN_U 0x0f +#define BD7182x_MASK_IBAT_U 0x3f +#define BD7182x_MASK_CURDIR_DISCHG 0x80 +#define BD7182x_MASK_CHG_STATE 0x7f +#define BD7182x_MASK_BAT_TEMP 0x07 +#define BD7182x_MASK_DCIN_DET BIT(0) +#define BD7182x_MASK_CONF_PON BIT(0) +#define BD71815_MASK_CONF_XSTB BIT(1) +#define BD7182x_MASK_BAT_STAT 0x3f +#define BD7182x_MASK_DCIN_STAT 0x07 + +#define BD7182x_MASK_WDT_AUTO 0x40 +#define BD7182x_MASK_VBAT_ALM_LIMIT_U 0x01 +#define BD7182x_MASK_CHG_EN 0x01 + +#define BD7182x_DCIN_COLLAPSE_DEFAULT 0x36 + +#define MAX_CURRENT_DEFAULT 890000 /* uA */ +#define AC_NAME "bd71828_ac" +#define BAT_NAME "bd71828_bat" + +#define BAT_OPEN 0x7 + +/* + * VBAT Low voltage detection Threshold + * 0x00D4*16mV = 212*0.016 = 3.392v + */ +#define VBAT_LOW_TH 0x00D4 + +struct pwr_regs { + u8 vbat_avg; + u8 ibat; + u8 ibat_avg; + u8 btemp_vth; + u8 chg_state; + u8 bat_temp; + u8 dcin_stat; + u8 dcin_collapse_limit; + u8 chg_set1; + u8 chg_en; + u8 vbat_alm_limit_u; + u8 conf; + u8 vdcin; +}; + +static const struct pwr_regs pwr_regs_bd71828 = { + .vbat_avg = BD71828_REG_VBAT_U, + .ibat = BD71828_REG_IBAT_U, + .ibat_avg = BD71828_REG_IBAT_AVG_U, + .btemp_vth = BD71828_REG_VM_BTMP_U, + .chg_state = BD71828_REG_CHG_STATE, + .bat_temp = BD71828_REG_BAT_TEMP, + .dcin_stat = BD71828_REG_DCIN_STAT, + .dcin_collapse_limit = BD71828_REG_DCIN_CLPS, + .chg_set1 = BD71828_REG_CHG_SET1, + .chg_en = BD71828_REG_CHG_EN, + .vbat_alm_limit_u = BD71828_REG_ALM_VBAT_LIMIT_U, + .conf = BD71828_REG_CONF, + .vdcin = BD71828_REG_VDCIN_U, +}; + +static const struct pwr_regs pwr_regs_bd71815 = { + .vbat_avg = BD71815_REG_VM_SA_VBAT_U, + /* BD71815 does not have separate current and current avg */ + .ibat = BD71815_REG_CC_CURCD_U, + .ibat_avg = BD71815_REG_CC_CURCD_U, + + .btemp_vth = BD71815_REG_VM_BTMP, + .chg_state = BD71815_REG_CHG_STATE, + .bat_temp = BD71815_REG_BAT_TEMP, + .dcin_stat = BD71815_REG_DCIN_STAT, + .dcin_collapse_limit = BD71815_REG_DCIN_CLPS, + .chg_set1 = BD71815_REG_CHG_SET1, + .chg_en = BD71815_REG_CHG_SET1, + .vbat_alm_limit_u = BD71815_REG_ALM_VBAT_TH_U, + .conf = BD71815_REG_CONF, + + .vdcin = BD71815_REG_VM_DCIN_U, +}; + +struct bd71828_power { + struct regmap *regmap; + enum rohm_chip_type chip_type; + struct device *dev; + struct power_supply *ac; + struct power_supply *bat; + + const struct pwr_regs *regs; + /* Reg val to uA */ + int curr_factor; + int rsens; + int (*get_temp)(struct bd71828_power *pwr, int *temp); + int (*bat_inserted)(struct bd71828_power *pwr); +}; + +static int bd7182x_write16(struct bd71828_power *pwr, int reg, u16 val) +{ + __be16 tmp; + + tmp = cpu_to_be16(val); + + return regmap_bulk_write(pwr->regmap, reg, &tmp, sizeof(tmp)); +} + +static int bd7182x_read16_himask(struct bd71828_power *pwr, int reg, int himask, + u16 *val) +{ + struct regmap *regmap = pwr->regmap; + int ret; + __be16 rvals; + u8 *tmp = (u8 *)&rvals; + + ret = regmap_bulk_read(regmap, reg, &rvals, sizeof(*val)); + if (!ret) { + *tmp &= himask; + *val = be16_to_cpu(rvals); + } + + return ret; +} + +static int bd71828_get_vbat(struct bd71828_power *pwr, int *vcell) +{ + u16 tmp_vcell; + int ret; + + ret = bd7182x_read16_himask(pwr, pwr->regs->vbat_avg, + BD7182x_MASK_VBAT_U, &tmp_vcell); + if (ret) + dev_err(pwr->dev, "Failed to read battery average voltage\n"); + else + *vcell = ((int)tmp_vcell) * 1000; + + return ret; +} + +static int bd71828_get_current_ds_adc(struct bd71828_power *pwr, int *curr, int *curr_avg) +{ + __be16 tmp_curr; + char *tmp = (char *)&tmp_curr; + int dir = 1; + int regs[] = { pwr->regs->ibat, pwr->regs->ibat_avg }; + int *vals[] = { curr, curr_avg }; + int ret, i; + + for (dir = 1, i = 0; i < ARRAY_SIZE(regs); i++) { + ret = regmap_bulk_read(pwr->regmap, regs[i], &tmp_curr, + sizeof(tmp_curr)); + if (ret) + break; + + if (*tmp & BD7182x_MASK_CURDIR_DISCHG) + dir = -1; + + *tmp &= BD7182x_MASK_IBAT_U; + + *vals[i] = dir * ((int)be16_to_cpu(tmp_curr)) * pwr->curr_factor; + } + + return ret; +} + +/* Unit is tenths of degree C */ +static int bd71815_get_temp(struct bd71828_power *pwr, int *temp) +{ + struct regmap *regmap = pwr->regmap; + int ret; + int t; + + ret = regmap_read(regmap, pwr->regs->btemp_vth, &t); + if (ret) + return ret; + + t = 200 - t; + + if (t > 200) { + dev_err(pwr->dev, "Failed to read battery temperature\n"); + return -ENODATA; + } + + return 0; +} + +/* Unit is tenths of degree C */ +static int bd71828_get_temp(struct bd71828_power *pwr, int *temp) +{ + u16 t; + int ret; + int tmp = 200 * 10000; + + ret = bd7182x_read16_himask(pwr, pwr->regs->btemp_vth, + BD71828_MASK_VM_BTMP_U, &t); + if (ret) + return ret; + + if (t > 3200) { + dev_err(pwr->dev, + "Failed to read battery temperature\n"); + return -ENODATA; + } + + tmp -= 625ULL * (unsigned int)t; + *temp = tmp / 1000; + + return ret; +} + +static int bd71828_charge_status(struct bd71828_power *pwr, + int *s, int *h) +{ + unsigned int state; + int status, health; + int ret = 1; + + ret = regmap_read(pwr->regmap, pwr->regs->chg_state, &state); + if (ret) { + dev_err(pwr->dev, "charger status reading failed (%d)\n", ret); + return ret; + } + + state &= BD7182x_MASK_CHG_STATE; + + dev_dbg(pwr->dev, "CHG_STATE %d\n", state); + + switch (state) { + case 0x00: + status = POWER_SUPPLY_STATUS_DISCHARGING; + health = POWER_SUPPLY_HEALTH_GOOD; + break; + case 0x01: + case 0x02: + case 0x03: + case 0x0E: + status = POWER_SUPPLY_STATUS_CHARGING; + health = POWER_SUPPLY_HEALTH_GOOD; + break; + case 0x0F: + status = POWER_SUPPLY_STATUS_FULL; + health = POWER_SUPPLY_HEALTH_GOOD; + break; + case 0x10: + case 0x11: + case 0x12: + case 0x13: + case 0x14: + case 0x20: + case 0x21: + case 0x22: + case 0x23: + case 0x24: + status = POWER_SUPPLY_STATUS_NOT_CHARGING; + health = POWER_SUPPLY_HEALTH_OVERHEAT; + break; + case 0x30: + case 0x31: + case 0x32: + case 0x40: + status = POWER_SUPPLY_STATUS_DISCHARGING; + health = POWER_SUPPLY_HEALTH_GOOD; + break; + case 0x7f: + default: + status = POWER_SUPPLY_STATUS_NOT_CHARGING; + health = POWER_SUPPLY_HEALTH_DEAD; + break; + } + + if (s) + *s = status; + if (h) + *h = health; + + return ret; +} + +static int get_chg_online(struct bd71828_power *pwr, int *chg_online) +{ + int r, ret; + + ret = regmap_read(pwr->regmap, pwr->regs->dcin_stat, &r); + if (ret) { + dev_err(pwr->dev, "Failed to read DCIN status\n"); + return ret; + } + *chg_online = ((r & BD7182x_MASK_DCIN_DET) != 0); + + return 0; +} + +static int get_bat_online(struct bd71828_power *pwr, int *bat_online) +{ + int r, ret; + + ret = regmap_read(pwr->regmap, pwr->regs->bat_temp, &r); + if (ret) { + dev_err(pwr->dev, "Failed to read battery temperature\n"); + return ret; + } + *bat_online = ((r & BD7182x_MASK_BAT_TEMP) != BAT_OPEN); + + return 0; +} + +static int bd71828_bat_inserted(struct bd71828_power *pwr) +{ + int ret, val; + + ret = regmap_read(pwr->regmap, pwr->regs->conf, &val); + if (ret) { + dev_err(pwr->dev, "Failed to read CONF register\n"); + return 0; + } + ret = val & BD7182x_MASK_CONF_PON; + + if (ret) + regmap_update_bits(pwr->regmap, pwr->regs->conf, + BD7182x_MASK_CONF_PON, 0); + + return ret; +} + +static int bd71815_bat_inserted(struct bd71828_power *pwr) +{ + int ret, val; + + ret = regmap_read(pwr->regmap, pwr->regs->conf, &val); + if (ret) { + dev_err(pwr->dev, "Failed to read CONF register\n"); + return ret; + } + + ret = !(val & BD71815_MASK_CONF_XSTB); + if (ret) + regmap_write(pwr->regmap, pwr->regs->conf, val | + BD71815_MASK_CONF_XSTB); + + return ret; +} + +static int bd71828_init_hardware(struct bd71828_power *pwr) +{ + int ret; + + /* TODO: Collapse limit should come from device-tree ? */ + ret = regmap_write(pwr->regmap, pwr->regs->dcin_collapse_limit, + BD7182x_DCIN_COLLAPSE_DEFAULT); + if (ret) { + dev_err(pwr->dev, "Failed to write DCIN collapse limit\n"); + return ret; + } + + ret = pwr->bat_inserted(pwr); + if (ret < 0) + return ret; + + if (ret) { + /* WDT_FST auto set */ + ret = regmap_update_bits(pwr->regmap, pwr->regs->chg_set1, + BD7182x_MASK_WDT_AUTO, + BD7182x_MASK_WDT_AUTO); + if (ret) + return ret; + + ret = bd7182x_write16(pwr, pwr->regs->vbat_alm_limit_u, + VBAT_LOW_TH); + if (ret) + return ret; + + /* + * On BD71815 "we mask the power-state" from relax detection. + * I am unsure what the impact of the power-state would be if + * we didn't - but this is what the vendor driver did - and + * that driver has been used in few projects so I just assume + * this is needed. + */ + if (pwr->chip_type == ROHM_CHIP_TYPE_BD71815) { + ret = regmap_set_bits(pwr->regmap, + BD71815_REG_REX_CTRL_1, + REX_PMU_STATE_MASK); + if (ret) + return ret; + } + } + + return 0; +} + +static int bd71828_charger_get_property(struct power_supply *psy, + enum power_supply_property psp, + union power_supply_propval *val) +{ + struct bd71828_power *pwr = dev_get_drvdata(psy->dev.parent); + u32 vot; + u16 tmp; + int online; + int ret; + + switch (psp) { + case POWER_SUPPLY_PROP_ONLINE: + ret = get_chg_online(pwr, &online); + if (!ret) + val->intval = online; + break; + case POWER_SUPPLY_PROP_VOLTAGE_NOW: + ret = bd7182x_read16_himask(pwr, pwr->regs->vdcin, + BD7182x_MASK_VDCIN_U, &tmp); + if (ret) + return ret; + + vot = tmp; + /* 5 milli volt steps */ + val->intval = 5000 * vot; + break; + default: + return -EINVAL; + } + + return 0; +} + +static int bd71828_battery_get_property(struct power_supply *psy, + enum power_supply_property psp, + union power_supply_propval *val) +{ + struct bd71828_power *pwr = dev_get_drvdata(psy->dev.parent); + int ret = 0; + int status, health, tmp, curr, curr_avg, chg_en; + + if (psp == POWER_SUPPLY_PROP_STATUS || + psp == POWER_SUPPLY_PROP_HEALTH || + psp == POWER_SUPPLY_PROP_CHARGE_TYPE) + ret = bd71828_charge_status(pwr, &status, &health); + else if (psp == POWER_SUPPLY_PROP_CURRENT_AVG || + psp == POWER_SUPPLY_PROP_CURRENT_NOW) + ret = bd71828_get_current_ds_adc(pwr, &curr, &curr_avg); + if (ret) + return ret; + + switch (psp) { + case POWER_SUPPLY_PROP_STATUS: + val->intval = status; + break; + case POWER_SUPPLY_PROP_HEALTH: + val->intval = health; + break; + case POWER_SUPPLY_PROP_PRESENT: + ret = get_bat_online(pwr, &tmp); + if (!ret) + val->intval = tmp; + break; + case POWER_SUPPLY_PROP_VOLTAGE_NOW: + ret = bd71828_get_vbat(pwr, &tmp); + val->intval = tmp; + break; + case POWER_SUPPLY_PROP_TECHNOLOGY: + val->intval = POWER_SUPPLY_TECHNOLOGY_LION; + break; + case POWER_SUPPLY_PROP_CURRENT_AVG: + val->intval = curr_avg; + break; + case POWER_SUPPLY_PROP_CURRENT_NOW: + val->intval = curr; + break; + case POWER_SUPPLY_PROP_CURRENT_MAX: + val->intval = MAX_CURRENT_DEFAULT; + break; + case POWER_SUPPLY_PROP_TEMP: + ret = pwr->get_temp(pwr, &val->intval); + break; + case POWER_SUPPLY_PROP_CHARGE_BEHAVIOUR: + ret = regmap_read(pwr->regmap, pwr->regs->chg_en, &chg_en); + if (ret) + return ret; + + val->intval = (chg_en & BD7182x_MASK_CHG_EN) ? + POWER_SUPPLY_CHARGE_BEHAVIOUR_AUTO : + POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE; + break; + default: + ret = -EINVAL; + break; + } + + return ret; +} + +static int bd71828_battery_set_property(struct power_supply *psy, + enum power_supply_property psp, + const union power_supply_propval *val) +{ + struct bd71828_power *pwr = dev_get_drvdata(psy->dev.parent); + int ret = 0; + + switch (psp) { + case POWER_SUPPLY_PROP_CHARGE_BEHAVIOUR: + if (val->intval == POWER_SUPPLY_CHARGE_BEHAVIOUR_AUTO) + ret = regmap_update_bits(pwr->regmap, pwr->regs->chg_en, + BD7182x_MASK_CHG_EN, + BD7182x_MASK_CHG_EN); + else + ret = regmap_update_bits(pwr->regmap, pwr->regs->chg_en, + BD7182x_MASK_CHG_EN, + 0); + break; + default: + return -EINVAL; + } + + return ret; +} + +static int bd71828_battery_property_is_writeable(struct power_supply *psy, + enum power_supply_property psp) +{ + switch (psp) { + case POWER_SUPPLY_PROP_CHARGE_BEHAVIOUR: + return true; + default: + return false; + } +} + +/** @brief ac properties */ +static const enum power_supply_property bd71828_charger_props[] = { + POWER_SUPPLY_PROP_ONLINE, + POWER_SUPPLY_PROP_VOLTAGE_NOW, +}; + +static const enum power_supply_property bd71828_battery_props[] = { + POWER_SUPPLY_PROP_STATUS, + POWER_SUPPLY_PROP_HEALTH, + POWER_SUPPLY_PROP_VOLTAGE_NOW, + POWER_SUPPLY_PROP_HEALTH, + POWER_SUPPLY_PROP_PRESENT, + POWER_SUPPLY_PROP_TECHNOLOGY, + POWER_SUPPLY_PROP_TEMP, + POWER_SUPPLY_PROP_CURRENT_AVG, + POWER_SUPPLY_PROP_CURRENT_NOW, + POWER_SUPPLY_PROP_CURRENT_MAX, + POWER_SUPPLY_PROP_CHARGE_BEHAVIOUR, +}; + +/** @brief powers supplied by bd71828_ac */ +static char *bd71828_ac_supplied_to[] = { + BAT_NAME, +}; + +static const struct power_supply_desc bd71828_ac_desc = { + .name = AC_NAME, + .type = POWER_SUPPLY_TYPE_MAINS, + .properties = bd71828_charger_props, + .num_properties = ARRAY_SIZE(bd71828_charger_props), + .get_property = bd71828_charger_get_property, +}; + +static const struct power_supply_desc bd71828_bat_desc = { + .name = BAT_NAME, + .type = POWER_SUPPLY_TYPE_BATTERY, + .charge_behaviours = BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_AUTO) | + BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE), + .properties = bd71828_battery_props, + .num_properties = ARRAY_SIZE(bd71828_battery_props), + .get_property = bd71828_battery_get_property, + .set_property = bd71828_battery_set_property, + .property_is_writeable = bd71828_battery_property_is_writeable, +}; + +#define RSENS_CURR 10000000LLU + +#define BD_ISR_NAME(name) \ +bd7181x_##name##_isr + +#define BD_ISR_BAT(name, print, run_gauge) \ +static irqreturn_t BD_ISR_NAME(name)(int irq, void *data) \ +{ \ + struct bd71828_power *pwr = (struct bd71828_power *)data; \ + \ + dev_dbg(pwr->dev, "%s\n", print); \ + power_supply_changed(pwr->bat); \ + \ + return IRQ_HANDLED; \ +} + +#define BD_ISR_AC(name, print, run_gauge) \ +static irqreturn_t BD_ISR_NAME(name)(int irq, void *data) \ +{ \ + struct bd71828_power *pwr = (struct bd71828_power *)data; \ + \ + power_supply_changed(pwr->ac); \ + dev_dbg(pwr->dev, "%s\n", print); \ + power_supply_changed(pwr->bat); \ + \ + return IRQ_HANDLED; \ +} + +#define BD_ISR_DUMMY(name, print) \ +static irqreturn_t BD_ISR_NAME(name)(int irq, void *data) \ +{ \ + struct bd71828_power *pwr = (struct bd71828_power *)data; \ + \ + dev_dbg(pwr->dev, "%s\n", print); \ + \ + return IRQ_HANDLED; \ +} + +BD_ISR_BAT(chg_state_changed, "CHG state changed", true) +/* DCIN voltage changes */ +BD_ISR_AC(dcin_removed, "DCIN removed", true) +BD_ISR_AC(clps_out, "DCIN voltage back to normal", true) +BD_ISR_AC(clps_in, "DCIN voltage collapsed", false) +BD_ISR_AC(dcin_ovp_res, "DCIN voltage normal", true) +BD_ISR_AC(dcin_ovp_det, "DCIN OVER VOLTAGE", true) + +BD_ISR_DUMMY(dcin_mon_det, "DCIN voltage below threshold") +BD_ISR_DUMMY(dcin_mon_res, "DCIN voltage above threshold") + +BD_ISR_DUMMY(vsys_uv_res, "VSYS under-voltage cleared") +BD_ISR_DUMMY(vsys_uv_det, "VSYS under-voltage") +BD_ISR_DUMMY(vsys_low_res, "'VSYS low' cleared") +BD_ISR_DUMMY(vsys_low_det, "VSYS low") +BD_ISR_DUMMY(vsys_mon_res, "VSYS mon - resumed") +BD_ISR_DUMMY(vsys_mon_det, "VSYS mon - detected") +BD_ISR_BAT(chg_wdg_temp, "charger temperature watchdog triggered", true) +BD_ISR_BAT(chg_wdg, "charging watchdog triggered", true) +BD_ISR_BAT(bat_removed, "Battery removed", true) +BD_ISR_BAT(bat_det, "Battery detected", true) +/* TODO: Verify the meaning of these interrupts */ +BD_ISR_BAT(rechg_det, "Recharging", true) +BD_ISR_BAT(rechg_res, "Recharge ending", true) +BD_ISR_DUMMY(temp_transit, "Temperature transition") +BD_ISR_BAT(therm_rmv, "bd71815-therm-rmv", false) +BD_ISR_BAT(therm_det, "bd71815-therm-det", true) +BD_ISR_BAT(bat_dead, "bd71815-bat-dead", false) +BD_ISR_BAT(bat_short_res, "bd71815-bat-short-res", true) +BD_ISR_BAT(bat_short, "bd71815-bat-short-det", false) +BD_ISR_BAT(bat_low_res, "bd71815-bat-low-res", true) +BD_ISR_BAT(bat_low, "bd71815-bat-low-det", true) +BD_ISR_BAT(bat_ov_res, "bd71815-bat-over-res", true) +/* What should we do here? */ +BD_ISR_BAT(bat_ov, "bd71815-bat-over-det", false) +BD_ISR_BAT(bat_mon_res, "bd71815-bat-mon-res", true) +BD_ISR_BAT(bat_mon, "bd71815-bat-mon-det", true) +BD_ISR_BAT(bat_cc_mon, "bd71815-bat-cc-mon2", false) +BD_ISR_BAT(bat_oc1_res, "bd71815-bat-oc1-res", true) +BD_ISR_BAT(bat_oc1, "bd71815-bat-oc1-det", false) +BD_ISR_BAT(bat_oc2_res, "bd71815-bat-oc2-res", true) +BD_ISR_BAT(bat_oc2, "bd71815-bat-oc2-det", false) +BD_ISR_BAT(bat_oc3_res, "bd71815-bat-oc3-res", true) +BD_ISR_BAT(bat_oc3, "bd71815-bat-oc3-det", false) +BD_ISR_BAT(temp_bat_low_res, "bd71815-temp-bat-low-res", true) +BD_ISR_BAT(temp_bat_low, "bd71815-temp-bat-low-det", true) +BD_ISR_BAT(temp_bat_hi_res, "bd71815-temp-bat-hi-res", true) +BD_ISR_BAT(temp_bat_hi, "bd71815-temp-bat-hi-det", true) + +static irqreturn_t bd7182x_dcin_removed(int irq, void *data) +{ + struct bd71828_power *pwr = (struct bd71828_power *)data; + + power_supply_changed(pwr->ac); + dev_dbg(pwr->dev, "DCIN removed\n"); + + return IRQ_HANDLED; +} + +static irqreturn_t bd718x7_chg_done(int irq, void *data) +{ + struct bd71828_power *pwr = (struct bd71828_power *)data; + + power_supply_changed(pwr->bat); + + return IRQ_HANDLED; +} + +static irqreturn_t bd7182x_dcin_detected(int irq, void *data) +{ + struct bd71828_power *pwr = (struct bd71828_power *)data; + + dev_dbg(pwr->dev, "DCIN inserted\n"); + power_supply_changed(pwr->ac); + + return IRQ_HANDLED; +} + +static irqreturn_t bd71828_vbat_low_res(int irq, void *data) +{ + struct bd71828_power *pwr = (struct bd71828_power *)data; + + dev_dbg(pwr->dev, "VBAT LOW Resumed\n"); + + return IRQ_HANDLED; +} + +static irqreturn_t bd71828_vbat_low_det(int irq, void *data) +{ + struct bd71828_power *pwr = (struct bd71828_power *)data; + + dev_dbg(pwr->dev, "VBAT LOW Detected\n"); + + return IRQ_HANDLED; +} + +static irqreturn_t bd71828_temp_bat_hi_det(int irq, void *data) +{ + struct bd71828_power *pwr = (struct bd71828_power *)data; + + dev_warn(pwr->dev, "Overtemp Detected\n"); + power_supply_changed(pwr->bat); + + return IRQ_HANDLED; +} + +static irqreturn_t bd71828_temp_bat_hi_res(int irq, void *data) +{ + struct bd71828_power *pwr = (struct bd71828_power *)data; + + dev_dbg(pwr->dev, "Overtemp Resumed\n"); + power_supply_changed(pwr->bat); + + return IRQ_HANDLED; +} + +static irqreturn_t bd71828_temp_bat_low_det(int irq, void *data) +{ + struct bd71828_power *pwr = (struct bd71828_power *)data; + + dev_dbg(pwr->dev, "Lowtemp Detected\n"); + power_supply_changed(pwr->bat); + + return IRQ_HANDLED; +} + +static irqreturn_t bd71828_temp_bat_low_res(int irq, void *data) +{ + struct bd71828_power *pwr = (struct bd71828_power *)data; + + dev_dbg(pwr->dev, "Lowtemp Resumed\n"); + power_supply_changed(pwr->bat); + + return IRQ_HANDLED; +} + +static irqreturn_t bd71828_temp_vf_det(int irq, void *data) +{ + struct bd71828_power *pwr = (struct bd71828_power *)data; + + dev_dbg(pwr->dev, "VF Detected\n"); + power_supply_changed(pwr->bat); + + return IRQ_HANDLED; +} + +static irqreturn_t bd71828_temp_vf_res(int irq, void *data) +{ + struct bd71828_power *pwr = (struct bd71828_power *)data; + + dev_dbg(pwr->dev, "VF Resumed\n"); + power_supply_changed(pwr->bat); + + return IRQ_HANDLED; +} + +static irqreturn_t bd71828_temp_vf125_det(int irq, void *data) +{ + struct bd71828_power *pwr = (struct bd71828_power *)data; + + dev_dbg(pwr->dev, "VF125 Detected\n"); + power_supply_changed(pwr->bat); + + return IRQ_HANDLED; +} + +static irqreturn_t bd71828_temp_vf125_res(int irq, void *data) +{ + struct bd71828_power *pwr = (struct bd71828_power *)data; + + dev_dbg(pwr->dev, "VF125 Resumed\n"); + power_supply_changed(pwr->bat); + + return IRQ_HANDLED; +} + +struct bd7182x_irq_res { + const char *name; + irq_handler_t handler; +}; + +#define BDIRQ(na, hn) { .name = (na), .handler = (hn) } + +static int bd7182x_get_irqs(struct platform_device *pdev, + struct bd71828_power *pwr) +{ + int i, irq, ret; + static const struct bd7182x_irq_res bd71815_irqs[] = { + BDIRQ("bd71815-dcin-rmv", BD_ISR_NAME(dcin_removed)), + BDIRQ("bd71815-dcin-clps-out", BD_ISR_NAME(clps_out)), + BDIRQ("bd71815-dcin-clps-in", BD_ISR_NAME(clps_in)), + BDIRQ("bd71815-dcin-ovp-res", BD_ISR_NAME(dcin_ovp_res)), + BDIRQ("bd71815-dcin-ovp-det", BD_ISR_NAME(dcin_ovp_det)), + BDIRQ("bd71815-dcin-mon-res", BD_ISR_NAME(dcin_mon_res)), + BDIRQ("bd71815-dcin-mon-det", BD_ISR_NAME(dcin_mon_det)), + + BDIRQ("bd71815-vsys-uv-res", BD_ISR_NAME(vsys_uv_res)), + BDIRQ("bd71815-vsys-uv-det", BD_ISR_NAME(vsys_uv_det)), + BDIRQ("bd71815-vsys-low-res", BD_ISR_NAME(vsys_low_res)), + BDIRQ("bd71815-vsys-low-det", BD_ISR_NAME(vsys_low_det)), + BDIRQ("bd71815-vsys-mon-res", BD_ISR_NAME(vsys_mon_res)), + BDIRQ("bd71815-vsys-mon-det", BD_ISR_NAME(vsys_mon_det)), + BDIRQ("bd71815-chg-wdg-temp", BD_ISR_NAME(chg_wdg_temp)), + BDIRQ("bd71815-chg-wdg", BD_ISR_NAME(chg_wdg)), + BDIRQ("bd71815-rechg-det", BD_ISR_NAME(rechg_det)), + BDIRQ("bd71815-rechg-res", BD_ISR_NAME(rechg_res)), + BDIRQ("bd71815-ranged-temp-transit", BD_ISR_NAME(temp_transit)), + BDIRQ("bd71815-chg-state-change", BD_ISR_NAME(chg_state_changed)), + BDIRQ("bd71815-bat-temp-normal", bd71828_temp_bat_hi_res), + BDIRQ("bd71815-bat-temp-erange", bd71828_temp_bat_hi_det), + BDIRQ("bd71815-bat-rmv", BD_ISR_NAME(bat_removed)), + BDIRQ("bd71815-bat-det", BD_ISR_NAME(bat_det)), + + /* Add ISRs for these */ + BDIRQ("bd71815-therm-rmv", BD_ISR_NAME(therm_rmv)), + BDIRQ("bd71815-therm-det", BD_ISR_NAME(therm_det)), + BDIRQ("bd71815-bat-dead", BD_ISR_NAME(bat_dead)), + BDIRQ("bd71815-bat-short-res", BD_ISR_NAME(bat_short_res)), + BDIRQ("bd71815-bat-short-det", BD_ISR_NAME(bat_short)), + BDIRQ("bd71815-bat-low-res", BD_ISR_NAME(bat_low_res)), + BDIRQ("bd71815-bat-low-det", BD_ISR_NAME(bat_low)), + BDIRQ("bd71815-bat-over-res", BD_ISR_NAME(bat_ov_res)), + BDIRQ("bd71815-bat-over-det", BD_ISR_NAME(bat_ov)), + BDIRQ("bd71815-bat-mon-res", BD_ISR_NAME(bat_mon_res)), + BDIRQ("bd71815-bat-mon-det", BD_ISR_NAME(bat_mon)), + /* cc-mon 1 & 3 ? */ + BDIRQ("bd71815-bat-cc-mon2", BD_ISR_NAME(bat_cc_mon)), + BDIRQ("bd71815-bat-oc1-res", BD_ISR_NAME(bat_oc1_res)), + BDIRQ("bd71815-bat-oc1-det", BD_ISR_NAME(bat_oc1)), + BDIRQ("bd71815-bat-oc2-res", BD_ISR_NAME(bat_oc2_res)), + BDIRQ("bd71815-bat-oc2-det", BD_ISR_NAME(bat_oc2)), + BDIRQ("bd71815-bat-oc3-res", BD_ISR_NAME(bat_oc3_res)), + BDIRQ("bd71815-bat-oc3-det", BD_ISR_NAME(bat_oc3)), + BDIRQ("bd71815-temp-bat-low-res", BD_ISR_NAME(temp_bat_low_res)), + BDIRQ("bd71815-temp-bat-low-det", BD_ISR_NAME(temp_bat_low)), + BDIRQ("bd71815-temp-bat-hi-res", BD_ISR_NAME(temp_bat_hi_res)), + BDIRQ("bd71815-temp-bat-hi-det", BD_ISR_NAME(temp_bat_hi)), + /* + * TODO: add rest of the IRQs and re-check the handling. + * Check the bd71815-bat-cc-mon1, bd71815-bat-cc-mon3, + * bd71815-bat-low-res, bd71815-bat-low-det, + * bd71815-bat-hi-res, bd71815-bat-hi-det. + */ + }; + static const struct bd7182x_irq_res bd71828_irqs[] = { + BDIRQ("bd71828-chg-done", bd718x7_chg_done), + BDIRQ("bd71828-pwr-dcin-in", bd7182x_dcin_detected), + BDIRQ("bd71828-pwr-dcin-out", bd7182x_dcin_removed), + BDIRQ("bd71828-vbat-normal", bd71828_vbat_low_res), + BDIRQ("bd71828-vbat-low", bd71828_vbat_low_det), + BDIRQ("bd71828-btemp-hi", bd71828_temp_bat_hi_det), + BDIRQ("bd71828-btemp-cool", bd71828_temp_bat_hi_res), + BDIRQ("bd71828-btemp-lo", bd71828_temp_bat_low_det), + BDIRQ("bd71828-btemp-warm", bd71828_temp_bat_low_res), + BDIRQ("bd71828-temp-hi", bd71828_temp_vf_det), + BDIRQ("bd71828-temp-norm", bd71828_temp_vf_res), + BDIRQ("bd71828-temp-125-over", bd71828_temp_vf125_det), + BDIRQ("bd71828-temp-125-under", bd71828_temp_vf125_res), + }; + int num_irqs; + const struct bd7182x_irq_res *irqs; + + switch (pwr->chip_type) { + case ROHM_CHIP_TYPE_BD71828: + irqs = &bd71828_irqs[0]; + num_irqs = ARRAY_SIZE(bd71828_irqs); + break; + case ROHM_CHIP_TYPE_BD71815: + irqs = &bd71815_irqs[0]; + num_irqs = ARRAY_SIZE(bd71815_irqs); + break; + default: + return -EINVAL; + } + + for (i = 0; i < num_irqs; i++) { + irq = platform_get_irq_byname(pdev, irqs[i].name); + + ret = devm_request_threaded_irq(&pdev->dev, irq, NULL, + irqs[i].handler, 0, + irqs[i].name, pwr); + if (ret) + break; + } + + return ret; +} + +#define RSENS_DEFAULT_30MOHM 30000 /* 30 mOhm in uOhms*/ + +static int bd7182x_get_rsens(struct bd71828_power *pwr) +{ + u64 tmp = RSENS_CURR; + int rsens_ohm = RSENS_DEFAULT_30MOHM; + struct fwnode_handle *node = NULL; + + if (pwr->dev->parent) + node = dev_fwnode(pwr->dev->parent); + + if (node) { + int ret; + u32 rs; + + ret = fwnode_property_read_u32(node, + "rohm,charger-sense-resistor-micro-ohms", + &rs); + if (ret) { + if (ret == -EINVAL) { + rs = RSENS_DEFAULT_30MOHM; + } else { + dev_err(pwr->dev, "Bad RSENS dt property\n"); + return ret; + } + } + if (!rs) { + dev_err(pwr->dev, "Bad RSENS value\n"); + return -EINVAL; + } + + rsens_ohm = (int)rs; + } + + /* Reg val to uA */ + do_div(tmp, rsens_ohm); + + pwr->curr_factor = tmp; + pwr->rsens = rsens_ohm; + dev_dbg(pwr->dev, "Setting rsens to %u micro ohm\n", pwr->rsens); + dev_dbg(pwr->dev, "Setting curr-factor to %u\n", pwr->curr_factor); + + return 0; +} + +static int bd71828_power_probe(struct platform_device *pdev) +{ + struct bd71828_power *pwr; + struct power_supply_config ac_cfg = {}; + struct power_supply_config bat_cfg = {}; + int ret; + struct regmap *regmap; + + regmap = dev_get_regmap(pdev->dev.parent, NULL); + if (!regmap) { + dev_err(&pdev->dev, "No parent regmap\n"); + return -EINVAL; + } + + pwr = devm_kzalloc(&pdev->dev, sizeof(*pwr), GFP_KERNEL); + if (!pwr) + return -ENOMEM; + + pwr->regmap = regmap; + pwr->dev = &pdev->dev; + pwr->chip_type = platform_get_device_id(pdev)->driver_data; + + switch (pwr->chip_type) { + case ROHM_CHIP_TYPE_BD71828: + pwr->bat_inserted = bd71828_bat_inserted; + pwr->get_temp = bd71828_get_temp; + pwr->regs = &pwr_regs_bd71828; + break; + case ROHM_CHIP_TYPE_BD71815: + pwr->bat_inserted = bd71815_bat_inserted; + pwr->get_temp = bd71815_get_temp; + pwr->regs = &pwr_regs_bd71815; + break; + default: + dev_err(pwr->dev, "Unknown PMIC\n"); + return -EINVAL; + } + + ret = bd7182x_get_rsens(pwr); + if (ret) + return dev_err_probe(&pdev->dev, ret, "sense resistor missing\n"); + + dev_set_drvdata(&pdev->dev, pwr); + bd71828_init_hardware(pwr); + + bat_cfg.drv_data = pwr; + bat_cfg.fwnode = dev_fwnode(&pdev->dev); + + ac_cfg.supplied_to = bd71828_ac_supplied_to; + ac_cfg.num_supplicants = ARRAY_SIZE(bd71828_ac_supplied_to); + ac_cfg.drv_data = pwr; + + pwr->ac = devm_power_supply_register(&pdev->dev, &bd71828_ac_desc, + &ac_cfg); + if (IS_ERR(pwr->ac)) + return dev_err_probe(&pdev->dev, PTR_ERR(pwr->ac), + "failed to register ac\n"); + + pwr->bat = devm_power_supply_register(&pdev->dev, &bd71828_bat_desc, + &bat_cfg); + if (IS_ERR(pwr->bat)) + return dev_err_probe(&pdev->dev, PTR_ERR(pwr->bat), + "failed to register bat\n"); + + ret = bd7182x_get_irqs(pdev, pwr); + if (ret) + return dev_err_probe(&pdev->dev, ret, "failed to request IRQs"); + + /* Configure wakeup capable */ + device_set_wakeup_capable(pwr->dev, 1); + device_set_wakeup_enable(pwr->dev, 1); + + return 0; +} + +static const struct platform_device_id bd71828_charger_id[] = { + { "bd71815-power", ROHM_CHIP_TYPE_BD71815 }, + { "bd71828-power", ROHM_CHIP_TYPE_BD71828 }, + { }, +}; +MODULE_DEVICE_TABLE(platform, bd71828_charger_id); + +static struct platform_driver bd71828_power_driver = { + .driver = { + .name = "bd718xx-power", + }, + .probe = bd71828_power_probe, + .id_table = bd71828_charger_id, +}; + +module_platform_driver(bd71828_power_driver); + +MODULE_AUTHOR("Cong Pham <cpham2403@gmail.com>"); +MODULE_DESCRIPTION("ROHM BD718(15/28/78) PMIC Battery Charger driver"); +MODULE_LICENSE("GPL"); diff --git a/drivers/power/supply/cw2015_battery.c b/drivers/power/supply/cw2015_battery.c index 2263d5d3448f..0806abea2372 100644 --- a/drivers/power/supply/cw2015_battery.c +++ b/drivers/power/supply/cw2015_battery.c @@ -699,7 +699,13 @@ static int cw_bat_probe(struct i2c_client *client) if (!cw_bat->battery_workqueue) return -ENOMEM; - devm_delayed_work_autocancel(&client->dev, &cw_bat->battery_delay_work, cw_bat_work); + ret = devm_delayed_work_autocancel(&client->dev, &cw_bat->battery_delay_work, cw_bat_work); + if (ret) { + dev_err_probe(&client->dev, ret, + "Failed to register delayed work\n"); + return ret; + } + queue_delayed_work(cw_bat->battery_workqueue, &cw_bat->battery_delay_work, msecs_to_jiffies(10)); return 0; diff --git a/drivers/power/supply/max17040_battery.c b/drivers/power/supply/max17040_battery.c index c1640bc6accd..48453508688a 100644 --- a/drivers/power/supply/max17040_battery.c +++ b/drivers/power/supply/max17040_battery.c @@ -388,6 +388,7 @@ static int max17040_get_property(struct power_supply *psy, union power_supply_propval *val) { struct max17040_chip *chip = power_supply_get_drvdata(psy); + int ret; switch (psp) { case POWER_SUPPLY_PROP_ONLINE: @@ -410,7 +411,10 @@ static int max17040_get_property(struct power_supply *psy, if (!chip->channel_temp) return -ENODATA; - iio_read_channel_processed(chip->channel_temp, &val->intval); + ret = iio_read_channel_processed(chip->channel_temp, &val->intval); + if (ret) + return ret; + val->intval /= 100; /* Convert from milli- to deci-degree */ break; diff --git a/drivers/power/supply/max77705_charger.c b/drivers/power/supply/max77705_charger.c index b1a227bf72e2..5dd02f658f5b 100644 --- a/drivers/power/supply/max77705_charger.c +++ b/drivers/power/supply/max77705_charger.c @@ -40,6 +40,39 @@ static enum power_supply_property max77705_charger_props[] = { POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT, }; +static irqreturn_t max77705_aicl_irq(int irq, void *irq_drv_data) +{ + struct max77705_charger_data *chg = irq_drv_data; + unsigned int regval, irq_status; + int err; + + err = regmap_read(chg->regmap, MAX77705_CHG_REG_INT_OK, &irq_status); + if (err < 0) + return IRQ_HANDLED; + + // irq is fiered at the end of current decrease sequence too + // early check AICL_I bit to guard against that excess irq call + while (!(irq_status & BIT(MAX77705_AICL_I))) { + err = regmap_field_read(chg->rfield[MAX77705_CHG_CHGIN_LIM], ®val); + if (err < 0) + return IRQ_HANDLED; + + regval--; + + err = regmap_field_write(chg->rfield[MAX77705_CHG_CHGIN_LIM], regval); + if (err < 0) + return IRQ_HANDLED; + + msleep(AICL_WORK_DELAY_MS); + + err = regmap_read(chg->regmap, MAX77705_CHG_REG_INT_OK, &irq_status); + if (err < 0) + return IRQ_HANDLED; + } + + return IRQ_HANDLED; +} + static irqreturn_t max77705_chgin_irq(int irq, void *irq_drv_data) { struct max77705_charger_data *chg = irq_drv_data; @@ -60,7 +93,7 @@ static const struct regmap_irq max77705_charger_irqs[] = { REGMAP_IRQ_REG_LINE(MAX77705_AICL_I, BITS_PER_BYTE), }; -static struct regmap_irq_chip max77705_charger_irq_chip = { +static const struct regmap_irq_chip max77705_charger_irq_chip = { .name = "max77705-charger", .status_base = MAX77705_CHG_REG_INT, .mask_base = MAX77705_CHG_REG_INT_MASK, @@ -567,6 +600,7 @@ static int max77705_charger_probe(struct i2c_client *i2c) { struct power_supply_config pscfg = {}; struct max77705_charger_data *chg; + struct regmap_irq_chip *chip_desc; struct device *dev; struct regmap_irq_chip_data *irq_data; int ret; @@ -580,6 +614,13 @@ static int max77705_charger_probe(struct i2c_client *i2c) chg->dev = dev; i2c_set_clientdata(i2c, chg); + chip_desc = devm_kmemdup(dev, &max77705_charger_irq_chip, + sizeof(max77705_charger_irq_chip), + GFP_KERNEL); + if (!chip_desc) + return -ENOMEM; + chip_desc->irq_drv_data = chg; + chg->regmap = devm_regmap_init_i2c(i2c, &max77705_chg_regmap_config); if (IS_ERR(chg->regmap)) return PTR_ERR(chg->regmap); @@ -599,11 +640,9 @@ static int max77705_charger_probe(struct i2c_client *i2c) if (IS_ERR(chg->psy_chg)) return PTR_ERR(chg->psy_chg); - max77705_charger_irq_chip.irq_drv_data = chg; ret = devm_regmap_add_irq_chip(chg->dev, chg->regmap, i2c->irq, IRQF_ONESHOT, 0, - &max77705_charger_irq_chip, - &irq_data); + chip_desc, &irq_data); if (ret) return dev_err_probe(dev, ret, "failed to add irq chip\n"); @@ -632,6 +671,15 @@ static int max77705_charger_probe(struct i2c_client *i2c) goto destroy_wq; } + ret = devm_request_threaded_irq(dev, regmap_irq_get_virq(irq_data, MAX77705_AICL_I), + NULL, max77705_aicl_irq, + IRQF_TRIGGER_NONE, + "aicl-irq", chg); + if (ret) { + dev_err_probe(dev, ret, "Failed to Request aicl IRQ\n"); + goto destroy_wq; + } + ret = max77705_charger_enable(chg); if (ret) { dev_err_probe(dev, ret, "failed to enable charge\n"); diff --git a/drivers/power/supply/qcom_battmgr.c b/drivers/power/supply/qcom_battmgr.c index 3c2837ef3461..c8028606bba0 100644 --- a/drivers/power/supply/qcom_battmgr.c +++ b/drivers/power/supply/qcom_battmgr.c @@ -678,12 +678,7 @@ static int qcom_battmgr_set_charge_start_threshold(struct qcom_battmgr *battmgr, u32 target_soc, delta_soc; int ret; - if (start_soc < CHARGE_CTRL_START_THR_MIN || - start_soc > CHARGE_CTRL_START_THR_MAX) { - dev_err(battmgr->dev, "charge control start threshold exceed range: [%u - %u]\n", - CHARGE_CTRL_START_THR_MIN, CHARGE_CTRL_START_THR_MAX); - return -EINVAL; - } + start_soc = clamp(start_soc, CHARGE_CTRL_START_THR_MIN, CHARGE_CTRL_START_THR_MAX); /* * If the new start threshold is larger than the old end threshold, @@ -716,12 +711,7 @@ static int qcom_battmgr_set_charge_end_threshold(struct qcom_battmgr *battmgr, i u32 delta_soc = CHARGE_CTRL_DELTA_SOC; int ret; - if (end_soc < CHARGE_CTRL_END_THR_MIN || - end_soc > CHARGE_CTRL_END_THR_MAX) { - dev_err(battmgr->dev, "charge control end threshold exceed range: [%u - %u]\n", - CHARGE_CTRL_END_THR_MIN, CHARGE_CTRL_END_THR_MAX); - return -EINVAL; - } + end_soc = clamp(end_soc, CHARGE_CTRL_END_THR_MIN, CHARGE_CTRL_END_THR_MAX); if (battmgr->info.charge_ctrl_start && end_soc > battmgr->info.charge_ctrl_start) delta_soc = end_soc - battmgr->info.charge_ctrl_start; diff --git a/drivers/power/supply/rt5033_charger.c b/drivers/power/supply/rt5033_charger.c index 2fdc58439707..de724f23e453 100644 --- a/drivers/power/supply/rt5033_charger.c +++ b/drivers/power/supply/rt5033_charger.c @@ -701,6 +701,8 @@ static int rt5033_charger_probe(struct platform_device *pdev) np_conn = of_parse_phandle(pdev->dev.of_node, "richtek,usb-connector", 0); np_edev = of_get_parent(np_conn); charger->edev = extcon_find_edev_by_node(np_edev); + of_node_put(np_edev); + of_node_put(np_conn); if (IS_ERR(charger->edev)) { dev_warn(charger->dev, "no extcon device found in device-tree\n"); goto out; diff --git a/drivers/power/supply/rt9467-charger.c b/drivers/power/supply/rt9467-charger.c index fe773dd8b404..44c26fb37a77 100644 --- a/drivers/power/supply/rt9467-charger.c +++ b/drivers/power/supply/rt9467-charger.c @@ -376,7 +376,7 @@ static int rt9467_set_value_from_ranges(struct rt9467_chg_data *data, if (rsel == RT9467_RANGE_VMIVR) { ret = linear_range_get_selector_high(range, value, &sel, &found); if (ret) - value = range->max_sel; + sel = range->max_sel; } else { linear_range_get_selector_within(range, value, &sel); } @@ -588,6 +588,10 @@ static int rt9467_run_aicl(struct rt9467_chg_data *data) aicl_vth = mivr_vth + RT9467_AICLVTH_GAP_uV; ret = rt9467_set_value_from_ranges(data, F_AICL_VTH, RT9467_RANGE_AICL_VTH, aicl_vth); + if (ret) { + dev_err(data->dev, "Failed to set AICL VTH\n"); + return ret; + } /* Trigger AICL function */ ret = regmap_field_write(data->rm_field[F_AICL_MEAS], 1); diff --git a/drivers/power/supply/rt9756.c b/drivers/power/supply/rt9756.c new file mode 100644 index 000000000000..f254527be653 --- /dev/null +++ b/drivers/power/supply/rt9756.c @@ -0,0 +1,955 @@ +// SPDX-License-Identifier: GPL-2.0-only +// +// Copyright (C) 2025 Richtek Technology Corp. +// +// Authors: ChiYuan Huang <cy_huang@richtek.com> + +#include <linux/atomic.h> +#include <linux/cleanup.h> +#include <linux/i2c.h> +#include <linux/kernel.h> +#include <linux/linear_range.h> +#include <linux/interrupt.h> +#include <linux/mod_devicetable.h> +#include <linux/module.h> +#include <linux/mutex.h> +#include <linux/power_supply.h> +#include <linux/property.h> +#include <linux/regmap.h> +#include <linux/sysfs.h> +#include <linux/util_macros.h> + +#define RT9756_REG_INTFLAG1 0x0B +#define RT9756_REG_INTFLAG2 0x0D +#define RT9756_REG_INTFLAG3 0x0F +#define RT9756_REG_ADCCTL 0x11 +#define RT9756_REG_VBUSADC 0x12 +#define RT9756_REG_BC12FLAG 0x45 +#define RT9756_REG_INTFLAG4 0x49 + +/* Flag1 */ +#define RT9756_EVT_BUSOVP BIT(3) +#define RT9756_EVT_BUSOCP BIT(2) +#define RT9756_EVT_BUSUCP BIT(0) +/* Flag2 */ +#define RT9756_EVT_BATOVP BIT(7) +#define RT9756_EVT_BATOCP BIT(6) +#define RT9756_EVT_TDIEOTP BIT(3) +#define RT9756_EVT_VBUSLOW_ERR BIT(2) +#define RT9756_EVT_VAC_INSERT BIT(0) +/* Flag3 */ +#define RT9756_EVT_WDT BIT(5) +#define RT9756_EVT_VAC_UVLO BIT(4) +/* ADCCTL */ +#define RT9756_ADCEN_MASK BIT(7) +#define RT9756_ADCONCE_MASK BIT(6) +/* Bc12_flag */ +#define RT9756_EVT_BC12_DONE BIT(3) +/* Flag4 */ +#define RT9756_EVT_OUTOVP BIT(0) + +#define RICHTEK_DEVID 7 +#define RT9756_REVID 0 +#define RT9756A_REVID 1 +#define RT9757_REVID 2 +#define RT9757A_REVID 3 +#define RT9756_ADC_CONVTIME 1200 +#define RT9756_ADC_MAXWAIT 16000 + +enum rt9756_model { + MODEL_RT9756 = 0, + MODEL_RT9757, + MODEL_RT9770, + MODEL_MAX +}; + +enum rt9756_adc_chan { + ADC_VBUS = 0, + ADC_IBUS, + ADC_VBAT, + ADC_IBAT, + ADC_TDIE, + ADC_MAX_CHANNEL +}; + +enum rt9756_usb_type { + USB_NO_VBUS = 0, + USB_SDP = 2, + USB_NSTD, + USB_DCP, + USB_CDP, + MAX_USB_TYPE +}; + +enum rt9756_fields { + F_VBATOVP = 0, + F_VBATOVP_EN, + F_IBATOCP, + F_IBATOCP_EN, + F_VBUSOVP, + F_VBUSOVP_EN, + F_IBUSOCP, + F_IBUSOCP_EN, + F_SWITCHING, + F_REG_RST, + F_CHG_EN, + F_OP_MODE, + F_WDT_DIS, + F_WDT_TMR, + F_DEV_ID, + F_BC12_EN, + F_USB_STATE, + F_VBUS_STATE, + F_IBAT_RSEN, + F_REVISION, + F_MAX_FIELD +}; + +enum rt9756_ranges { + R_VBATOVP = 0, + R_IBATOCP, + R_VBUSOVP, + R_IBUSOCP, + R_MAX_RANGE +}; + +static const struct reg_field rt9756_chg_fields[F_MAX_FIELD] = { + [F_VBATOVP] = REG_FIELD(0x08, 0, 4), + [F_VBATOVP_EN] = REG_FIELD(0x08, 7, 7), + [F_IBATOCP] = REG_FIELD(0x09, 0, 5), + [F_IBATOCP_EN] = REG_FIELD(0x09, 7, 7), + [F_VBUSOVP] = REG_FIELD(0x06, 0, 5), + [F_VBUSOVP_EN] = REG_FIELD(0x06, 7, 7), + [F_IBUSOCP] = REG_FIELD(0x07, 0, 4), + [F_IBUSOCP_EN] = REG_FIELD(0x07, 5, 5), + [F_SWITCHING] = REG_FIELD(0x5c, 7, 7), + [F_REG_RST] = REG_FIELD(0x00, 7, 7), + [F_CHG_EN] = REG_FIELD(0x00, 6, 6), + [F_OP_MODE] = REG_FIELD(0x00, 5, 5), + [F_WDT_DIS] = REG_FIELD(0x00, 3, 3), + [F_WDT_TMR] = REG_FIELD(0x00, 0, 2), + [F_DEV_ID] = REG_FIELD(0x03, 0, 3), + [F_BC12_EN] = REG_FIELD(0x44, 7, 7), + [F_USB_STATE] = REG_FIELD(0x46, 5, 7), + [F_VBUS_STATE] = REG_FIELD(0x4c, 0, 0), + [F_IBAT_RSEN] = REG_FIELD(0x5e, 0, 1), + [F_REVISION] = REG_FIELD(0x62, 0, 1), +}; + +static const struct reg_field rt9770_chg_fields[F_MAX_FIELD] = { + [F_VBATOVP] = REG_FIELD(0x08, 0, 4), + [F_VBATOVP_EN] = REG_FIELD(0x08, 7, 7), + [F_IBATOCP] = REG_FIELD(0x09, 0, 5), + [F_IBATOCP_EN] = REG_FIELD(0x09, 7, 7), + [F_VBUSOVP] = REG_FIELD(0x06, 0, 5), + [F_VBUSOVP_EN] = REG_FIELD(0x06, 7, 7), + [F_IBUSOCP] = REG_FIELD(0x07, 0, 4), + [F_IBUSOCP_EN] = REG_FIELD(0x07, 5, 5), + [F_SWITCHING] = REG_FIELD(0x5c, 7, 7), + [F_REG_RST] = REG_FIELD(0x00, 7, 7), + [F_CHG_EN] = REG_FIELD(0x00, 6, 6), + [F_OP_MODE] = REG_FIELD(0x00, 5, 5), + [F_WDT_DIS] = REG_FIELD(0x00, 3, 3), + [F_WDT_TMR] = REG_FIELD(0x00, 0, 2), + [F_DEV_ID] = REG_FIELD(0x60, 0, 3), + [F_BC12_EN] = REG_FIELD(0x03, 7, 7), + [F_USB_STATE] = REG_FIELD(0x02, 5, 7), + [F_VBUS_STATE] = REG_FIELD(0x4c, 0, 0), + [F_IBAT_RSEN] = REG_FIELD(0x5e, 0, 1), + [F_REVISION] = REG_FIELD(0x62, 3, 7), +}; + +/* All converted to microvolt or microamp */ +static const struct linear_range rt9756_chg_ranges[R_MAX_RANGE] = { + LINEAR_RANGE_IDX(R_VBATOVP, 4200000, 0, 31, 25000), + LINEAR_RANGE_IDX(R_IBATOCP, 2000000, 0, 63, 100000), + LINEAR_RANGE_IDX(R_VBUSOVP, 3000000, 0, 63, 50000), + LINEAR_RANGE_IDX(R_IBUSOCP, 1000000, 0, 31, 250000), +}; + +struct charger_event { + unsigned int flag1; + unsigned int flag2; + unsigned int flag3; + unsigned int flag4; +}; + +struct rt9756_data { + struct device *dev; + struct regmap *regmap; + struct regmap_field *rm_fields[F_MAX_FIELD]; + struct power_supply *psy; + struct power_supply *bat_psy; + struct mutex adc_lock; + struct power_supply_desc psy_desc; + struct power_supply_desc bat_psy_desc; + struct charger_event chg_evt; + unsigned int rg_resistor; + unsigned int real_resistor; + enum rt9756_model model; + atomic_t usb_type; +}; + +struct rt975x_dev_data { + const struct regmap_config *regmap_config; + const struct reg_field *reg_fields; + const struct reg_sequence *init_regs; + size_t num_init_regs; + int (*check_device_model)(struct rt9756_data *data); +}; + +static int rt9756_get_value_field_range(struct rt9756_data *data, enum rt9756_fields en_field, + enum rt9756_fields field, enum rt9756_ranges rsel, int *val) +{ + const struct linear_range *range = rt9756_chg_ranges + rsel; + unsigned int enable, selector, value; + int ret; + + ret = regmap_field_read(data->rm_fields[en_field], &enable); + if (ret) + return ret; + + if (!enable) { + *val = 0; + return 0; + } + + ret = regmap_field_read(data->rm_fields[field], &selector); + if (ret) + return ret; + + ret = linear_range_get_value(range, selector, &value); + if (ret) + return ret; + + *val = (int)value; + + return 0; +} + +static int rt9756_set_value_field_range(struct rt9756_data *data, enum rt9756_fields en_field, + enum rt9756_fields field, enum rt9756_ranges rsel, int val) +{ + const struct linear_range *range = rt9756_chg_ranges + rsel; + unsigned int selector, value; + int ret; + + if (!val) + return regmap_field_write(data->rm_fields[en_field], 0); + + value = (unsigned int)val; + linear_range_get_selector_within(range, value, &selector); + ret = regmap_field_write(data->rm_fields[field], selector); + if (ret) + return ret; + + return regmap_field_write(data->rm_fields[en_field], 1); +} + +static int rt9756_get_adc(struct rt9756_data *data, enum rt9756_adc_chan chan, + int *val) +{ + struct regmap *regmap = data->regmap; + unsigned int reg_addr = RT9756_REG_VBUSADC + chan * 2; + unsigned int mask = RT9756_ADCEN_MASK | RT9756_ADCONCE_MASK; + unsigned int shift = 0, adc_cntl; + __be16 raws; + int scale, offset = 0, ret; + + guard(mutex)(&data->adc_lock); + + ret = regmap_update_bits(regmap, RT9756_REG_ADCCTL, mask, mask); + if (ret) + return ret; + + ret = regmap_read_poll_timeout(regmap, RT9756_REG_ADCCTL, adc_cntl, + !(adc_cntl & RT9756_ADCEN_MASK), + RT9756_ADC_CONVTIME, RT9756_ADC_MAXWAIT); + if (ret && ret != -ETIMEDOUT) + return ret; + + ret = regmap_raw_read(regmap, reg_addr, &raws, sizeof(raws)); + if (ret) + return ret; + + /* + * TDIE LSB 1'c, others LSB 1000uV or 1000uA. + * Rsense ratio is needed for IBAT channel + */ + if (chan == ADC_TDIE) { + scale = 10; + shift = 8; + offset = -40; + } else if (chan == ADC_IBAT) + scale = 1000 * data->rg_resistor / data->real_resistor; + else + scale = 1000; + + *val = ((be16_to_cpu(raws) >> shift) + offset) * scale; + + return regmap_update_bits(regmap, RT9756_REG_ADCCTL, mask, 0); +} + +static int rt9756_get_switching_state(struct rt9756_data *data, int *status) +{ + unsigned int switching_state; + int ret; + + ret = regmap_field_read(data->rm_fields[F_SWITCHING], &switching_state); + if (ret) + return ret; + + if (switching_state) + *status = POWER_SUPPLY_STATUS_CHARGING; + else + *status = POWER_SUPPLY_STATUS_NOT_CHARGING; + + return 0; +} + +static int rt9756_get_charger_health(struct rt9756_data *data) +{ + struct charger_event *evt = &data->chg_evt; + + if (evt->flag2 & RT9756_EVT_VBUSLOW_ERR) + return POWER_SUPPLY_HEALTH_UNDERVOLTAGE; + + if (evt->flag1 & RT9756_EVT_BUSOVP || evt->flag2 & RT9756_EVT_BATOVP || + evt->flag4 & RT9756_EVT_OUTOVP) + return POWER_SUPPLY_HEALTH_OVERVOLTAGE; + + if (evt->flag1 & RT9756_EVT_BUSOCP || evt->flag2 & RT9756_EVT_BATOCP) + return POWER_SUPPLY_HEALTH_OVERCURRENT; + + if (evt->flag1 & RT9756_EVT_BUSUCP) + return POWER_SUPPLY_HEALTH_UNSPEC_FAILURE; + + if (evt->flag2 & RT9756_EVT_TDIEOTP) + return POWER_SUPPLY_HEALTH_OVERHEAT; + + if (evt->flag3 & RT9756_EVT_WDT) + return POWER_SUPPLY_HEALTH_WATCHDOG_TIMER_EXPIRE; + + return POWER_SUPPLY_HEALTH_GOOD; +} + +static int rt9756_get_charger_online(struct rt9756_data *data, int *val) +{ + unsigned int online; + int ret; + + ret = regmap_field_read(data->rm_fields[F_VBUS_STATE], &online); + if (ret) + return ret; + + *val = !!online; + return 0; +} + +static int rt9756_get_vbus_ovp(struct rt9756_data *data, int *val) +{ + unsigned int opmode; + int ovpval, ret; + + /* operating mode -> 0 bypass, 1 div2 */ + ret = regmap_field_read(data->rm_fields[F_OP_MODE], &opmode); + if (ret) + return ret; + + ret = rt9756_get_value_field_range(data, F_VBUSOVP_EN, F_VBUSOVP, R_VBUSOVP, &ovpval); + if (ret) + return ret; + + *val = opmode ? ovpval * 2 : ovpval; + return 0; +} + +static int rt9756_set_vbus_ovp(struct rt9756_data *data, int val) +{ + unsigned int opmode; + int ret; + + /* operating mode -> 0 bypass, 1 div2 */ + ret = regmap_field_read(data->rm_fields[F_OP_MODE], &opmode); + if (ret) + return ret; + + return rt9756_set_value_field_range(data, F_VBUSOVP_EN, F_VBUSOVP, R_VBUSOVP, + opmode ? val / 2 : val); +} + +static const char * const rt9756_manufacturer = "Richtek Technology Corp."; +static const char * const rt9756_model[MODEL_MAX] = { "RT9756", "RT9757", "RT9770" }; + +static int rt9756_psy_get_property(struct power_supply *psy, + enum power_supply_property psp, + union power_supply_propval *val) +{ + struct rt9756_data *data = power_supply_get_drvdata(psy); + int *pval = &val->intval; + + switch (psp) { + case POWER_SUPPLY_PROP_STATUS: + return rt9756_get_switching_state(data, pval); + case POWER_SUPPLY_PROP_HEALTH: + *pval = rt9756_get_charger_health(data); + return 0; + case POWER_SUPPLY_PROP_ONLINE: + return rt9756_get_charger_online(data, pval); + case POWER_SUPPLY_PROP_VOLTAGE_MAX: + return rt9756_get_vbus_ovp(data, pval); + case POWER_SUPPLY_PROP_VOLTAGE_NOW: + return rt9756_get_adc(data, ADC_VBUS, pval); + case POWER_SUPPLY_PROP_CURRENT_MAX: + return rt9756_get_value_field_range(data, F_IBUSOCP_EN, F_IBUSOCP, R_IBUSOCP, pval); + case POWER_SUPPLY_PROP_CURRENT_NOW: + return rt9756_get_adc(data, ADC_IBUS, pval); + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX: + return rt9756_get_value_field_range(data, F_VBATOVP_EN, F_VBATOVP, R_VBATOVP, pval); + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX: + return rt9756_get_value_field_range(data, F_IBATOCP_EN, F_IBATOCP, R_IBATOCP, pval); + case POWER_SUPPLY_PROP_TEMP: + return rt9756_get_adc(data, ADC_TDIE, pval); + case POWER_SUPPLY_PROP_USB_TYPE: + *pval = atomic_read(&data->usb_type); + return 0; + case POWER_SUPPLY_PROP_MODEL_NAME: + val->strval = rt9756_model[data->model]; + return 0; + case POWER_SUPPLY_PROP_MANUFACTURER: + val->strval = rt9756_manufacturer; + return 0; + default: + return -ENODATA; + } +} + +static int rt9756_psy_set_property(struct power_supply *psy, + enum power_supply_property psp, + const union power_supply_propval *val) +{ + struct rt9756_data *data = power_supply_get_drvdata(psy); + int intval = val->intval; + + switch (psp) { + case POWER_SUPPLY_PROP_STATUS: + memset(&data->chg_evt, 0, sizeof(data->chg_evt)); + return regmap_field_write(data->rm_fields[F_CHG_EN], !!intval); + case POWER_SUPPLY_PROP_VOLTAGE_MAX: + return rt9756_set_vbus_ovp(data, intval); + case POWER_SUPPLY_PROP_CURRENT_MAX: + return rt9756_set_value_field_range(data, F_IBUSOCP_EN, F_IBUSOCP, R_IBUSOCP, + intval); + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX: + return rt9756_set_value_field_range(data, F_VBATOVP_EN, F_VBATOVP, R_VBATOVP, + intval); + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX: + return rt9756_set_value_field_range(data, F_IBATOCP_EN, F_IBATOCP, R_IBATOCP, + intval); + case POWER_SUPPLY_PROP_USB_TYPE: + return regmap_field_write(data->rm_fields[F_BC12_EN], !!intval); + default: + return -EINVAL; + } +} + +static const enum power_supply_property rt9756_psy_properties[] = { + POWER_SUPPLY_PROP_STATUS, + POWER_SUPPLY_PROP_ONLINE, + POWER_SUPPLY_PROP_HEALTH, + POWER_SUPPLY_PROP_ONLINE, + POWER_SUPPLY_PROP_VOLTAGE_MAX, + POWER_SUPPLY_PROP_VOLTAGE_NOW, + POWER_SUPPLY_PROP_CURRENT_MAX, + POWER_SUPPLY_PROP_CURRENT_NOW, + POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX, + POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX, + POWER_SUPPLY_PROP_TEMP, + POWER_SUPPLY_PROP_USB_TYPE, + POWER_SUPPLY_PROP_MODEL_NAME, + POWER_SUPPLY_PROP_MANUFACTURER, +}; + +static int rt9756_bat_psy_get_property(struct power_supply *psy, + enum power_supply_property psp, + union power_supply_propval *val) +{ + struct rt9756_data *data = power_supply_get_drvdata(psy); + int *pval = &val->intval; + + switch (psp) { + case POWER_SUPPLY_PROP_TECHNOLOGY: + *pval = POWER_SUPPLY_TECHNOLOGY_LION; + return 0; + case POWER_SUPPLY_PROP_VOLTAGE_NOW: + return rt9756_get_adc(data, ADC_VBAT, pval); + case POWER_SUPPLY_PROP_CURRENT_NOW: + return rt9756_get_adc(data, ADC_IBAT, pval); + default: + return -ENODATA; + } +} + +static const enum power_supply_property rt9756_bat_psy_properties[] = { + POWER_SUPPLY_PROP_TECHNOLOGY, + POWER_SUPPLY_PROP_VOLTAGE_NOW, + POWER_SUPPLY_PROP_CURRENT_NOW, +}; + +static int rt9756_psy_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_VOLTAGE_MAX: + case POWER_SUPPLY_PROP_CURRENT_MAX: + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX: + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX: + case POWER_SUPPLY_PROP_USB_TYPE: + return 1; + default: + return 0; + } +} + +static const unsigned int rt9756_wdt_millisecond[] = { + 500, 1000, 5000, 30000, 40000, 80000, 128000, 255000 +}; + +static ssize_t watchdog_timer_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct power_supply *psy = to_power_supply(dev); + struct rt9756_data *data = power_supply_get_drvdata(psy); + unsigned int wdt_tmr_now = 0, wdt_sel, wdt_dis; + int ret; + + ret = regmap_field_read(data->rm_fields[F_WDT_DIS], &wdt_dis); + if (ret) + return ret; + + if (!wdt_dis) { + ret = regmap_field_read(data->rm_fields[F_WDT_TMR], &wdt_sel); + if (ret) + return ret; + + wdt_tmr_now = rt9756_wdt_millisecond[wdt_sel]; + } + + return sysfs_emit(buf, "%d\n", wdt_tmr_now); +} + +static ssize_t watchdog_timer_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct power_supply *psy = to_power_supply(dev); + struct rt9756_data *data = power_supply_get_drvdata(psy); + unsigned int wdt_set, wdt_sel; + int ret; + + ret = kstrtouint(buf, 10, &wdt_set); + if (ret) + return ret; + + ret = regmap_field_write(data->rm_fields[F_WDT_DIS], 1); + if (ret) + return ret; + + wdt_sel = find_closest(wdt_set, rt9756_wdt_millisecond, + ARRAY_SIZE(rt9756_wdt_millisecond)); + + ret = regmap_field_write(data->rm_fields[F_WDT_TMR], wdt_sel); + if (ret) + return ret; + + if (wdt_set) { + ret = regmap_field_write(data->rm_fields[F_WDT_DIS], 0); + if (ret) + return ret; + } + + return count; +} + +static const char * const rt9756_opmode_str[] = { "bypass", "div2" }; + +static ssize_t operation_mode_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct power_supply *psy = to_power_supply(dev); + struct rt9756_data *data = power_supply_get_drvdata(psy); + unsigned int opmode; + int ret; + + ret = regmap_field_read(data->rm_fields[F_OP_MODE], &opmode); + if (ret) + return ret; + + return sysfs_emit(buf, "%s\n", rt9756_opmode_str[opmode]); +} + +static ssize_t operation_mode_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct power_supply *psy = to_power_supply(dev); + struct rt9756_data *data = power_supply_get_drvdata(psy); + int index, ret; + + index = sysfs_match_string(rt9756_opmode_str, buf); + if (index < 0) + return index; + + ret = regmap_field_write(data->rm_fields[F_OP_MODE], index); + + return ret ?: count; +} + +static DEVICE_ATTR_RW(watchdog_timer); +static DEVICE_ATTR_RW(operation_mode); + +static struct attribute *rt9756_sysfs_attrs[] = { + &dev_attr_watchdog_timer.attr, + &dev_attr_operation_mode.attr, + NULL +}; +ATTRIBUTE_GROUPS(rt9756_sysfs); + +static int rt9756_register_psy(struct rt9756_data *data) +{ + struct power_supply_desc *desc = &data->psy_desc; + struct power_supply_desc *bat_desc = &data->bat_psy_desc; + struct power_supply_config cfg = {}, bat_cfg = {}; + struct device *dev = data->dev; + char *psy_name, *bat_psy_name, **supplied_to; + + bat_cfg.drv_data = data; + bat_cfg.fwnode = dev_fwnode(dev); + + bat_psy_name = devm_kasprintf(dev, GFP_KERNEL, "rt9756-%s-battery", dev_name(dev)); + if (!bat_psy_name) + return -ENOMEM; + + bat_desc->name = bat_psy_name; + bat_desc->type = POWER_SUPPLY_TYPE_BATTERY; + bat_desc->properties = rt9756_bat_psy_properties; + bat_desc->num_properties = ARRAY_SIZE(rt9756_bat_psy_properties); + bat_desc->get_property = rt9756_bat_psy_get_property; + + data->bat_psy = devm_power_supply_register(dev, bat_desc, &bat_cfg); + if (IS_ERR(data->bat_psy)) + return dev_err_probe(dev, PTR_ERR(data->bat_psy), "Failed to register battery\n"); + + supplied_to = devm_kzalloc(dev, sizeof(*supplied_to), GFP_KERNEL); + if (!supplied_to) + return -ENOMEM; + + /* Link charger psy to battery psy */ + supplied_to[0] = bat_psy_name; + + cfg.drv_data = data; + cfg.fwnode = dev_fwnode(dev); + cfg.attr_grp = rt9756_sysfs_groups; + cfg.supplied_to = supplied_to; + cfg.num_supplicants = 1; + + psy_name = devm_kasprintf(dev, GFP_KERNEL, "rt9756-%s", dev_name(dev)); + if (!psy_name) + return -ENOMEM; + + desc->name = psy_name; + desc->type = POWER_SUPPLY_TYPE_USB; + desc->usb_types = BIT(POWER_SUPPLY_USB_TYPE_UNKNOWN) | BIT(POWER_SUPPLY_USB_TYPE_SDP) | + BIT(POWER_SUPPLY_USB_TYPE_DCP) | BIT(POWER_SUPPLY_USB_TYPE_CDP); + desc->properties = rt9756_psy_properties; + desc->num_properties = ARRAY_SIZE(rt9756_psy_properties); + desc->property_is_writeable = rt9756_psy_property_is_writeable; + desc->get_property = rt9756_psy_get_property; + desc->set_property = rt9756_psy_set_property; + + data->psy = devm_power_supply_register(dev, desc, &cfg); + + return PTR_ERR_OR_ZERO(data->psy); +} + +static int rt9756_get_usb_type(struct rt9756_data *data) +{ + unsigned int type; + int report_type, ret; + + ret = regmap_field_read(data->rm_fields[F_USB_STATE], &type); + if (ret) + return ret; + + switch (type) { + case USB_SDP: + case USB_NSTD: + report_type = POWER_SUPPLY_USB_TYPE_SDP; + break; + case USB_DCP: + report_type = POWER_SUPPLY_USB_TYPE_DCP; + break; + case USB_CDP: + report_type = POWER_SUPPLY_USB_TYPE_CDP; + break; + case USB_NO_VBUS: + default: + report_type = POWER_SUPPLY_USB_TYPE_UNKNOWN; + break; + } + + atomic_set(&data->usb_type, report_type); + return 0; +} + +static irqreturn_t rt9756_irq_handler(int irq, void *devid) +{ + struct rt9756_data *data = devid; + struct regmap *regmap = data->regmap; + struct charger_event *evt = &data->chg_evt; + unsigned int bc12_flag = 0; + int ret; + + ret = regmap_read(regmap, RT9756_REG_INTFLAG1, &evt->flag1); + if (ret) + return IRQ_NONE; + + ret = regmap_read(regmap, RT9756_REG_INTFLAG2, &evt->flag2); + if (ret) + return IRQ_NONE; + + ret = regmap_read(regmap, RT9756_REG_INTFLAG3, &evt->flag3); + if (ret) + return IRQ_NONE; + + if (data->model != MODEL_RT9770) { + ret = regmap_read(regmap, RT9756_REG_INTFLAG4, &evt->flag4); + if (ret) + return IRQ_NONE; + + ret = regmap_read(regmap, RT9756_REG_BC12FLAG, &bc12_flag); + if (ret) + return IRQ_NONE; + } + + dev_dbg(data->dev, "events: 0x%02x,%02x,%02x,%02x,%02x\n", evt->flag1, evt->flag2, + evt->flag3, evt->flag4, bc12_flag); + + if (evt->flag2 & RT9756_EVT_VAC_INSERT) { + ret = regmap_field_write(data->rm_fields[F_BC12_EN], 1); + if (ret) + return IRQ_NONE; + } + + if (evt->flag3 & RT9756_EVT_VAC_UVLO) + atomic_set(&data->usb_type, POWER_SUPPLY_USB_TYPE_UNKNOWN); + + if (bc12_flag & RT9756_EVT_BC12_DONE) { + ret = rt9756_get_usb_type(data); + if (ret) + return IRQ_NONE; + } + + power_supply_changed(data->psy); + + return IRQ_HANDLED; +} + +static int rt9756_config_batsense_resistor(struct rt9756_data *data) +{ + unsigned int shunt_resistor_uohms = 2000, rsense_sel; + + device_property_read_u32(data->dev, "shunt-resistor-micro-ohms", &shunt_resistor_uohms); + + if (!shunt_resistor_uohms || shunt_resistor_uohms > 5000) + return -EINVAL; + + data->real_resistor = shunt_resistor_uohms; + + /* Always choose the larger or equal one to prevent false ocp alarm */ + if (shunt_resistor_uohms <= 1000) { + rsense_sel = 0; + data->rg_resistor = 1000; + } else if (shunt_resistor_uohms <= 2000) { + rsense_sel = 1; + data->rg_resistor = 2000; + } else { + rsense_sel = 2; + data->rg_resistor = 5000; + } + + return regmap_field_write(data->rm_fields[F_IBAT_RSEN], rsense_sel); +} + +static const struct reg_sequence rt9756_init_regs[] = { + REG_SEQ(0x00, 0x80, 1000), /* REG_RESET */ + REG_SEQ0(0x04, 0x13), /* VACOVP/OVPGATE 12V */ + REG_SEQ0(0x00, 0x28), /* WDT_DIS = 1 */ + REG_SEQ0(0x0c, 0x02), /* MASK FLAG1 */ + REG_SEQ0(0x0e, 0x06), /* MASK FLAG2 */ + REG_SEQ0(0x10, 0xca), /* MASK FLAG3 */ + REG_SEQ0(0x44, 0xa0), /* BC12_EN */ + REG_SEQ0(0x47, 0x07), /* MASK BC12FLAG */ + REG_SEQ0(0x4a, 0xfe), /* MASK FLAG4 */ + REG_SEQ0(0x5c, 0x40), /* MASK CON_SWITCHING */ + REG_SEQ0(0x63, 0x01), /* MASK VDDA_UVLO */ +}; + +static const struct reg_sequence rt9770_init_regs[] = { + REG_SEQ(0x00, 0x80, 1000), /* REG_RESET */ + REG_SEQ0(0x04, 0x13), /* VACOVP/OVPGATE 12V */ + REG_SEQ0(0x00, 0x28), /* WDT_DIS = 1 */ + REG_SEQ0(0x0c, 0x02), /* MASK FLAG1 */ + REG_SEQ0(0x0e, 0x06), /* MASK FLAG2 */ + REG_SEQ0(0x10, 0xca), /* MASK FLAG3 */ + REG_SEQ0(0x5c, 0x40), /* MASK CON_SWITCHING */ + REG_SEQ0(0x63, 0x01), /* MASK VDDA_UVLO */ +}; + +static const struct regmap_config rt9756_regmap_config = { + .name = "rt9756", + .reg_bits = 16, + .val_bits = 8, + .max_register = 0x1ff, +}; + +static const struct regmap_config rt9770_regmap_config = { + .name = "rt9770", + .reg_bits = 8, + .val_bits = 8, + .max_register = 0xff, +}; + +static int rt9756_check_device_model(struct rt9756_data *data) +{ + struct device *dev = data->dev; + unsigned int revid; + int ret; + + ret = regmap_field_read(data->rm_fields[F_REVISION], &revid); + if (ret) + return dev_err_probe(dev, ret, "Failed to read revid\n"); + + if (revid == RT9757_REVID || revid == RT9757A_REVID) + data->model = MODEL_RT9757; + else if (revid == RT9756_REVID || revid == RT9756A_REVID) + data->model = MODEL_RT9756; + else + return dev_err_probe(dev, -EINVAL, "Unknown revision %d\n", revid); + + return 0; +} + +static int rt9770_check_device_model(struct rt9756_data *data) +{ + data->model = MODEL_RT9770; + return 0; +} + +static int rt9756_probe(struct i2c_client *i2c) +{ + const struct rt975x_dev_data *dev_data; + struct device *dev = &i2c->dev; + struct rt9756_data *data; + struct regmap *regmap; + unsigned int devid; + int ret; + + dev_data = device_get_match_data(dev); + if (!dev_data) + return dev_err_probe(dev, -EINVAL, "No device data found\n"); + + data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL); + if (!data) + return -ENOMEM; + + data->dev = dev; + mutex_init(&data->adc_lock); + atomic_set(&data->usb_type, POWER_SUPPLY_USB_TYPE_UNKNOWN); + i2c_set_clientdata(i2c, data); + + regmap = devm_regmap_init_i2c(i2c, dev_data->regmap_config); + if (IS_ERR(regmap)) + return dev_err_probe(dev, PTR_ERR(regmap), "Failed to init regmap\n"); + + data->regmap = regmap; + + ret = devm_regmap_field_bulk_alloc(dev, regmap, data->rm_fields, dev_data->reg_fields, + F_MAX_FIELD); + if (ret) + return dev_err_probe(dev, ret, "Failed to alloc regmap fields\n"); + + /* Richtek Device ID check */ + ret = regmap_field_read(data->rm_fields[F_DEV_ID], &devid); + if (ret) + return dev_err_probe(dev, ret, "Failed to read devid\n"); + + if (devid != RICHTEK_DEVID) + return dev_err_probe(dev, -ENODEV, "Incorrect VID 0x%02x\n", devid); + + /* Get specific model */ + ret = dev_data->check_device_model(data); + if (ret) + return ret; + + ret = regmap_register_patch(regmap, dev_data->init_regs, dev_data->num_init_regs); + if (ret) + return dev_err_probe(dev, ret, "Failed to init registers\n"); + + ret = rt9756_config_batsense_resistor(data); + if (ret) + return dev_err_probe(dev, ret, "Failed to config batsense resistor\n"); + + ret = rt9756_register_psy(data); + if (ret) + return dev_err_probe(dev, ret, "Failed to init power supply\n"); + + return devm_request_threaded_irq(dev, i2c->irq, NULL, rt9756_irq_handler, IRQF_ONESHOT, + dev_name(dev), data); +} + +static void rt9756_shutdown(struct i2c_client *i2c) +{ + struct rt9756_data *data = i2c_get_clientdata(i2c); + + regmap_field_write(data->rm_fields[F_REG_RST], 1); +} + +static const struct rt975x_dev_data rt9756_dev_data = { + .regmap_config = &rt9756_regmap_config, + .reg_fields = rt9756_chg_fields, + .init_regs = rt9756_init_regs, + .num_init_regs = ARRAY_SIZE(rt9756_init_regs), + .check_device_model = rt9756_check_device_model, +}; + +static const struct rt975x_dev_data rt9770_dev_data = { + .regmap_config = &rt9770_regmap_config, + .reg_fields = rt9770_chg_fields, + .init_regs = rt9770_init_regs, + .num_init_regs = ARRAY_SIZE(rt9770_init_regs), + .check_device_model = rt9770_check_device_model, +}; + +static const struct of_device_id rt9756_device_match_table[] = { + { .compatible = "richtek,rt9756", .data = &rt9756_dev_data }, + { .compatible = "richtek,rt9770", .data = &rt9770_dev_data }, + {} +}; +MODULE_DEVICE_TABLE(of, rt9756_device_match_table); + +static struct i2c_driver rt9756_charger_driver = { + .driver = { + .name = "rt9756", + .of_match_table = rt9756_device_match_table, + }, + .probe = rt9756_probe, + .shutdown = rt9756_shutdown, +}; +module_i2c_driver(rt9756_charger_driver); + +MODULE_DESCRIPTION("Richtek RT9756 charger driver"); +MODULE_AUTHOR("ChiYuan Huang <cy_huang@richtek.com>"); +MODULE_LICENSE("GPL"); diff --git a/drivers/power/supply/wm831x_power.c b/drivers/power/supply/wm831x_power.c index 6acdba7885ca..78fa0573ef25 100644 --- a/drivers/power/supply/wm831x_power.c +++ b/drivers/power/supply/wm831x_power.c @@ -144,6 +144,7 @@ static int wm831x_usb_limit_change(struct notifier_block *nb, struct wm831x_power, usb_notify); unsigned int i, best; + int ret; /* Find the highest supported limit */ best = 0; @@ -156,8 +157,13 @@ static int wm831x_usb_limit_change(struct notifier_block *nb, dev_dbg(wm831x_power->wm831x->dev, "Limiting USB current to %umA", wm831x_usb_limits[best]); - wm831x_set_bits(wm831x_power->wm831x, WM831X_POWER_STATE, - WM831X_USB_ILIM_MASK, best); + ret = wm831x_set_bits(wm831x_power->wm831x, WM831X_POWER_STATE, + WM831X_USB_ILIM_MASK, best); + if (ret < 0) { + dev_err(wm831x_power->wm831x->dev, + "Failed to set USB current limit: %d\n", ret); + return ret; + } return 0; } diff --git a/include/linux/power/max77705_charger.h b/include/linux/power/max77705_charger.h index 6653abfdf747..b3950ce0625e 100644 --- a/include/linux/power/max77705_charger.h +++ b/include/linux/power/max77705_charger.h @@ -123,6 +123,8 @@ #define MAX77705_DISABLE_SKIP 1 #define MAX77705_AUTO_SKIP 0 +#define AICL_WORK_DELAY_MS 100 + /* uA */ #define MAX77705_CURRENT_CHGIN_STEP 25000 #define MAX77705_CURRENT_CHG_STEP 50000 |