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authorLinus Torvalds <torvalds@linux-foundation.org>2015-11-05 12:28:15 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2015-11-05 12:28:15 -0800
commit400c5bd5a5b1faf3089322ace58b974446a8ddc3 (patch)
tree78594fc5e426c68b322adc11bd62a417267811eb
parent9bd9fa6c147e68fc4dc3b35893979720ba7d0321 (diff)
parent6bd03ce3c12a22d86f59070f1da15aaa2bde8a51 (diff)
downloadlinux-linaro-stable-400c5bd5a5b1faf3089322ace58b974446a8ddc3.tar.gz
Merge tag 'for-v4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply
Pull power supply and reset updates from Sebastian Reichel: - new AXP20X USB Power driver - new Qualcomm SMBB driver - new TPS65217 Charger driver - BQ24257: add BQ24250/BQ24251 support - overhaul bq27x00 battery driver, rename to bq27xxx - misc fixes and cleanups * tag 'for-v4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply: (54 commits) power: bq27xxx_battery: Remove unneeded dependency in Kconfig power: bq27xxx_battery: move irq handler to i2c section power: bq27xxx_battery: fix platform probe twl4030_charger: add missing iio dependency power_supply: charger-manager: add missing of_node_put Documentation: power: bq24257: Document exported sysfs entries power: bq24257: Add various device-specific sysfs properties power: bq24257: Allow input current limit sysfs access power: bq24257: Add input DPM voltage threshold setting support power: bq24257: Add over voltage protection setting support power: bq24257: Add SW-based approach for Power Good determination power: bq24257: Allow manual setting of input current limit power: bq24257: Add bit definition for temp sense enable power: bq24257: Add basic support for bq24250/bq24251 dt: power: bq24257-charger: Cover additional devices power: bq24257: Simplify bq24257_power_supply_init() power: bq24257: Use managed power supply register power: bq24257: Streamline input current limit setup power: bq24257: Remove IRQ config through stat-gpios power: bq27xxx_battery: fix signedness bug in bq27xxx_battery_read_health() ...
-rw-r--r--Documentation/ABI/testing/sysfs-class-power58
-rw-r--r--Documentation/devicetree/bindings/power/bq24257.txt53
-rw-r--r--Documentation/devicetree/bindings/power_supply/axp20x_usb_power.txt34
-rw-r--r--Documentation/devicetree/bindings/power_supply/qcom_smbb.txt131
-rw-r--r--Documentation/devicetree/bindings/power_supply/tps65217_charger.txt12
-rw-r--r--MAINTAINERS4
-rw-r--r--arch/arm/boot/dts/twl4030.dtsi2
-rw-r--r--arch/arm/configs/omap2plus_defconfig2
-rw-r--r--arch/unicore32/Kconfig2
-rw-r--r--drivers/power/88pm860x_battery.c37
-rw-r--r--drivers/power/Kconfig56
-rw-r--r--drivers/power/Makefile5
-rw-r--r--drivers/power/axp20x_usb_power.c248
-rw-r--r--drivers/power/bq2415x_charger.c2
-rw-r--r--drivers/power/bq24190_charger.c1
-rw-r--r--drivers/power/bq24257_charger.c492
-rw-r--r--drivers/power/bq27x00_battery.c1129
-rw-r--r--drivers/power/bq27xxx_battery.c1375
-rw-r--r--drivers/power/charger-manager.c4
-rw-r--r--drivers/power/lp8727_charger.c31
-rw-r--r--drivers/power/max17042_battery.c26
-rw-r--r--drivers/power/max8903_charger.c93
-rw-r--r--drivers/power/max8998_charger.c29
-rw-r--r--drivers/power/pm2301_charger.c1
-rw-r--r--drivers/power/qcom_smbb.c951
-rw-r--r--drivers/power/reset/Kconfig4
-rw-r--r--drivers/power/reset/at91-poweroff.c33
-rw-r--r--drivers/power/reset/at91-reset.c69
-rw-r--r--drivers/power/rt9455_charger.c1
-rw-r--r--drivers/power/smb347-charger.c1
-rw-r--r--drivers/power/tps65090-charger.c1
-rw-r--r--drivers/power/tps65217_charger.c264
-rw-r--r--drivers/power/twl4030_charger.c39
-rw-r--r--drivers/power/wm831x_power.c15
-rw-r--r--drivers/w1/slaves/w1_bq27000.c5
-rw-r--r--include/linux/mfd/axp20x.h24
-rw-r--r--include/linux/power/bq27x00_battery.h19
-rw-r--r--include/linux/power/bq27xxx_battery.h31
-rw-r--r--include/linux/power/charger-manager.h8
39 files changed, 3818 insertions, 1474 deletions
diff --git a/Documentation/ABI/testing/sysfs-class-power b/Documentation/ABI/testing/sysfs-class-power
index 369d2a2d7d3e..fa05719f9981 100644
--- a/Documentation/ABI/testing/sysfs-class-power
+++ b/Documentation/ABI/testing/sysfs-class-power
@@ -74,3 +74,61 @@ Description:
Valid values:
- 0 - 70 (minutes), step by 10 (rounded down)
+
+What: /sys/class/power_supply/bq24257-charger/ovp_voltage
+Date: October 2015
+KernelVersion: 4.4.0
+Contact: Andreas Dannenberg <dannenberg@ti.com>
+Description:
+ This entry configures the overvoltage protection feature of bq24257-
+ type charger devices. This feature protects the device and other
+ components against damage from overvoltage on the input supply. See
+ device datasheet for details.
+
+ Valid values:
+ - 6000000, 6500000, 7000000, 8000000, 9000000, 9500000, 10000000,
+ 10500000 (all uV)
+
+What: /sys/class/power_supply/bq24257-charger/in_dpm_voltage
+Date: October 2015
+KernelVersion: 4.4.0
+Contact: Andreas Dannenberg <dannenberg@ti.com>
+Description:
+ This entry configures the input dynamic power path management voltage of
+ bq24257-type charger devices. Once the supply drops to the configured
+ voltage, the input current limit is reduced down to prevent the further
+ drop of the supply. When the IC enters this mode, the charge current is
+ lower than the set value. See device datasheet for details.
+
+ Valid values:
+ - 4200000, 4280000, 4360000, 4440000, 4520000, 4600000, 4680000,
+ 4760000 (all uV)
+
+What: /sys/class/power_supply/bq24257-charger/high_impedance_enable
+Date: October 2015
+KernelVersion: 4.4.0
+Contact: Andreas Dannenberg <dannenberg@ti.com>
+Description:
+ This entry allows enabling the high-impedance mode of bq24257-type
+ charger devices. If enabled, it places the charger IC into low power
+ standby mode with the switch mode controller disabled. When disabled,
+ the charger operates normally. See device datasheet for details.
+
+ Valid values:
+ - 1: enabled
+ - 0: disabled
+
+What: /sys/class/power_supply/bq24257-charger/sysoff_enable
+Date: October 2015
+KernelVersion: 4.4.0
+Contact: Andreas Dannenberg <dannenberg@ti.com>
+Description:
+ This entry allows enabling the sysoff mode of bq24257-type charger
+ devices. If enabled and the input is removed, the internal battery FET
+ is turned off in order to reduce the leakage from the BAT pin to less
+ than 1uA. Note that on some devices/systems this disconnects the battery
+ from the system. See device datasheet for details.
+
+ Valid values:
+ - 1: enabled
+ - 0: disabled
diff --git a/Documentation/devicetree/bindings/power/bq24257.txt b/Documentation/devicetree/bindings/power/bq24257.txt
index 5c9d3940d07c..d693702c9c1e 100644
--- a/Documentation/devicetree/bindings/power/bq24257.txt
+++ b/Documentation/devicetree/bindings/power/bq24257.txt
@@ -1,21 +1,64 @@
-Binding for TI bq24257 Li-Ion Charger
+Binding for TI bq24250/bq24251/bq24257 Li-Ion Charger
Required properties:
- compatible: Should contain one of the following:
+ * "ti,bq24250"
+ * "ti,bq24251"
* "ti,bq24257"
-- reg: integer, i2c address of the device.
+- reg: integer, i2c address of the device.
+- interrupt-parent: Should be the phandle for the interrupt controller. Use in
+ conjunction with "interrupts".
+- interrupts: Interrupt mapping for GPIO IRQ (configure for both edges). Use in
+ conjunction with "interrupt-parent".
- ti,battery-regulation-voltage: integer, maximum charging voltage in uV.
-- ti,charge-current: integer, maximum charging current in uA.
-- ti,termination-current: integer, charge will be terminated when current in
- constant-voltage phase drops below this value (in uA).
+- ti,charge-current: integer, maximum charging current in uA.
+- ti,termination-current: integer, charge will be terminated when current in
+ constant-voltage phase drops below this value (in uA).
+
+Optional properties:
+- pg-gpios: GPIO used for connecting the bq2425x device PG (Power Good) pin.
+ This pin is not available on all devices however it should be used if
+ possible as this is the recommended way to obtain the charger's input PG
+ state. If this pin is not specified a software-based approach for PG
+ detection is used.
+- ti,current-limit: The maximum current to be drawn from the charger's input
+ (in uA). If this property is not specified, the input limit current is
+ set automatically using USB D+/D- signal based charger type detection.
+ If the hardware does not support the D+/D- based detection, a default
+ of 500,000 is used (=500mA) instead.
+- ti,ovp-voltage: Configures the over voltage protection voltage (in uV). If
+ not specified a default of 6,5000,000 (=6.5V) is used.
+- ti,in-dpm-voltage: Configures the threshold input voltage for the dynamic
+ power path management (in uV). If not specified a default of 4,360,000
+ (=4.36V) is used.
Example:
bq24257 {
compatible = "ti,bq24257";
reg = <0x6a>;
+ interrupt-parent = <&gpio1>;
+ interrupts = <16 IRQ_TYPE_EDGE_BOTH>;
+
+ pg-gpios = <&gpio1 28 GPIO_ACTIVE_HIGH>;
ti,battery-regulation-voltage = <4200000>;
ti,charge-current = <1000000>;
ti,termination-current = <50000>;
};
+
+Example:
+
+bq24250 {
+ compatible = "ti,bq24250";
+ reg = <0x6a>;
+ interrupt-parent = <&gpio1>;
+ interrupts = <16 IRQ_TYPE_EDGE_BOTH>;
+
+ ti,battery-regulation-voltage = <4200000>;
+ ti,charge-current = <500000>;
+ ti,termination-current = <50000>;
+ ti,current-limit = <900000>;
+ ti,ovp-voltage = <9500000>;
+ ti,in-dpm-voltage = <4440000>;
+};
diff --git a/Documentation/devicetree/bindings/power_supply/axp20x_usb_power.txt b/Documentation/devicetree/bindings/power_supply/axp20x_usb_power.txt
new file mode 100644
index 000000000000..862f4a49dc49
--- /dev/null
+++ b/Documentation/devicetree/bindings/power_supply/axp20x_usb_power.txt
@@ -0,0 +1,34 @@
+AXP20x USB power supply
+
+Required Properties:
+-compatible: "x-powers,axp202-usb-power-supply"
+
+This node is a subnode of the axp20x PMIC.
+
+Example:
+
+axp209: pmic@34 {
+ compatible = "x-powers,axp209";
+ reg = <0x34>;
+ interrupt-parent = <&nmi_intc>;
+ interrupts = <0 IRQ_TYPE_LEVEL_LOW>;
+ interrupt-controller;
+ #interrupt-cells = <1>;
+
+ regulators {
+ x-powers,dcdc-freq = <1500>;
+
+ vdd_cpu: dcdc2 {
+ regulator-always-on;
+ regulator-min-microvolt = <1000000>;
+ regulator-max-microvolt = <1450000>;
+ regulator-name = "vdd-cpu";
+ };
+
+ ...
+ };
+
+ usb-power-supply: usb-power-supply {
+ compatible = "x-powers,axp202-usb-power-supply";
+ };
+};
diff --git a/Documentation/devicetree/bindings/power_supply/qcom_smbb.txt b/Documentation/devicetree/bindings/power_supply/qcom_smbb.txt
new file mode 100644
index 000000000000..65b88fac854b
--- /dev/null
+++ b/Documentation/devicetree/bindings/power_supply/qcom_smbb.txt
@@ -0,0 +1,131 @@
+Qualcomm Switch-Mode Battery Charger and Boost
+
+PROPERTIES
+- compatible:
+ Usage: required
+ Value type: <stringlist>
+ Description: Must be one of:
+ - "qcom,pm8941-charger"
+
+- reg:
+ Usage: required
+ Value type: <prop-encoded-array>
+ Description: Base address of registers for SMBB block
+
+- interrupts:
+ Usage: required
+ Value type: <prop-encoded-array>
+ Description: The format of the specifier is defined by the binding document
+ describing the node's interrupt parent. Must contain one
+ specifier for each of the following interrupts, in order:
+ - charge done
+ - charge fast mode
+ - charge trickle mode
+ - battery temperature ok
+ - battery present
+ - charger disconnected
+ - USB-in valid
+ - DC-in valid
+
+- interrupt-names:
+ Usage: required
+ Value type: <stringlist>
+ Description: Must contain the following list, strictly ordered:
+ "chg-done",
+ "chg-fast",
+ "chg-trkl",
+ "bat-temp-ok",
+ "bat-present",
+ "chg-gone",
+ "usb-valid",
+ "dc-valid"
+
+- qcom,fast-charge-current-limit:
+ Usage: optional (default: 1A, or pre-configured value)
+ Value type: <u32>; uA; range [100mA : 3A]
+ Description: Maximum charge current; May be clamped to safety limits.
+
+- qcom,fast-charge-low-threshold-voltage:
+ Usage: optional (default: 3.2V, or pre-configured value)
+ Value type: <u32>; uV; range [2.1V : 3.6V]
+ Description: Battery voltage limit above which fast charging may operate;
+ Below this value linear or switch-mode auto-trickle-charging
+ will operate.
+
+- qcom,fast-charge-high-threshold-voltage:
+ Usage: optional (default: 4.2V, or pre-configured value)
+ Value type: <u32>; uV; range [3.24V : 5V]
+ Description: Battery voltage limit below which fast charging may operate;
+ The fast charger will attempt to charge the battery to this
+ voltage. May be clamped to safety limits.
+
+- qcom,fast-charge-safe-voltage:
+ Usage: optional (default: 4.2V, or pre-configured value)
+ Value type: <u32>; uV; range [3.24V : 5V]
+ Description: Maximum safe battery voltage; May be pre-set by bootloader, in
+ which case, setting this will harmlessly fail. The property
+ 'fast-charge-high-watermark' will be clamped by this value.
+
+- qcom,fast-charge-safe-current:
+ Usage: optional (default: 1A, or pre-configured value)
+ Value type: <u32>; uA; range [100mA : 3A]
+ Description: Maximum safe battery charge current; May pre-set by bootloader,
+ in which case, setting this will harmlessly fail. The property
+ 'qcom,fast-charge-current-limit' will be clamped by this value.
+
+- qcom,auto-recharge-threshold-voltage:
+ Usage: optional (default: 4.1V, or pre-configured value)
+ Value type: <u32>; uV; range [3.24V : 5V]
+ Description: Battery voltage limit below which auto-recharge functionality
+ will restart charging after end-of-charge; The high cutoff
+ limit for auto-recharge is 5% above this value.
+
+- qcom,minimum-input-voltage:
+ Usage: optional (default: 4.3V, or pre-configured value)
+ Value type: <u32>; uV; range [4.2V : 9.6V]
+ Description: Input voltage level above which charging may operate
+
+- qcom,dc-current-limit:
+ Usage: optional (default: 100mA, or pre-configured value)
+ Value type: <u32>; uA; range [100mA : 2.5A]
+ Description: Default DC charge current limit
+
+- qcom,disable-dc:
+ Usage: optional (default: false)
+ Value type: boolean: <u32> or <empty>
+ Description: Disable DC charger
+
+- qcom,jeita-extended-temp-range:
+ Usage: optional (default: false)
+ Value type: boolean: <u32> or <empty>
+ Description: Enable JEITA extended temperature range; This does *not*
+ adjust the maximum charge voltage or current in the extended
+ temperature range. It only allows charging when the battery
+ is in the extended temperature range. Voltage/current
+ regulation must be done externally to fully comply with
+ the JEITA safety guidelines if this flag is set.
+
+EXAMPLE
+charger@1000 {
+ compatible = "qcom,pm8941-charger";
+ reg = <0x1000 0x700>;
+ interrupts = <0x0 0x10 7 IRQ_TYPE_EDGE_BOTH>,
+ <0x0 0x10 5 IRQ_TYPE_EDGE_BOTH>,
+ <0x0 0x10 4 IRQ_TYPE_EDGE_BOTH>,
+ <0x0 0x12 1 IRQ_TYPE_EDGE_BOTH>,
+ <0x0 0x12 0 IRQ_TYPE_EDGE_BOTH>,
+ <0x0 0x13 2 IRQ_TYPE_EDGE_BOTH>,
+ <0x0 0x13 1 IRQ_TYPE_EDGE_BOTH>,
+ <0x0 0x14 1 IRQ_TYPE_EDGE_BOTH>;
+ interrupt-names = "chg-done",
+ "chg-fast",
+ "chg-trkl",
+ "bat-temp-ok",
+ "bat-present",
+ "chg-gone",
+ "usb-valid",
+ "dc-valid";
+
+ qcom,fast-charge-current-limit = <1000000>;
+ qcom,dc-charge-current-limit = <1000000>;
+};
diff --git a/Documentation/devicetree/bindings/power_supply/tps65217_charger.txt b/Documentation/devicetree/bindings/power_supply/tps65217_charger.txt
new file mode 100644
index 000000000000..98d131acee95
--- /dev/null
+++ b/Documentation/devicetree/bindings/power_supply/tps65217_charger.txt
@@ -0,0 +1,12 @@
+TPS65217 Charger
+
+Required Properties:
+-compatible: "ti,tps65217-charger"
+
+This node is a subnode of the tps65217 PMIC.
+
+Example:
+
+ tps65217-charger {
+ compatible = "ti,tps65090-charger";
+ };
diff --git a/MAINTAINERS b/MAINTAINERS
index fe5ed801f062..283d602a0240 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -7505,10 +7505,10 @@ NOKIA N900 POWER SUPPLY DRIVERS
M: Pali Rohár <pali.rohar@gmail.com>
S: Maintained
F: include/linux/power/bq2415x_charger.h
-F: include/linux/power/bq27x00_battery.h
+F: include/linux/power/bq27xxx_battery.h
F: include/linux/power/isp1704_charger.h
F: drivers/power/bq2415x_charger.c
-F: drivers/power/bq27x00_battery.c
+F: drivers/power/bq27xxx_battery.c
F: drivers/power/isp1704_charger.c
F: drivers/power/rx51_battery.c
diff --git a/arch/arm/boot/dts/twl4030.dtsi b/arch/arm/boot/dts/twl4030.dtsi
index 36ae9160b558..482b7aa37808 100644
--- a/arch/arm/boot/dts/twl4030.dtsi
+++ b/arch/arm/boot/dts/twl4030.dtsi
@@ -22,6 +22,8 @@
charger: bci {
compatible = "ti,twl4030-bci";
interrupts = <9>, <2>;
+ io-channels = <&twl4030_madc 11>;
+ io-channel-name = "vac";
bci3v1-supply = <&vusb3v1>;
};
diff --git a/arch/arm/configs/omap2plus_defconfig b/arch/arm/configs/omap2plus_defconfig
index 3f15a5cae167..c5e1943e5427 100644
--- a/arch/arm/configs/omap2plus_defconfig
+++ b/arch/arm/configs/omap2plus_defconfig
@@ -246,7 +246,7 @@ CONFIG_GPIO_TWL4030=y
CONFIG_GPIO_PALMAS=y
CONFIG_W1=m
CONFIG_HDQ_MASTER_OMAP=m
-CONFIG_BATTERY_BQ27x00=m
+CONFIG_BATTERY_BQ27XXX=m
CONFIG_CHARGER_ISP1704=m
CONFIG_CHARGER_TWL4030=m
CONFIG_CHARGER_BQ2415X=m
diff --git a/arch/unicore32/Kconfig b/arch/unicore32/Kconfig
index 928237a7b9ca..c9faddc61100 100644
--- a/arch/unicore32/Kconfig
+++ b/arch/unicore32/Kconfig
@@ -222,7 +222,7 @@ config I2C_BATTERY_BQ27200
tristate "I2C Battery BQ27200 Support"
select I2C_PUV3
select POWER_SUPPLY
- select BATTERY_BQ27x00
+ select BATTERY_BQ27XXX
config I2C_EEPROM_AT24
tristate "I2C EEPROMs AT24 support"
diff --git a/drivers/power/88pm860x_battery.c b/drivers/power/88pm860x_battery.c
index d49579b227ec..63c57dc82ac1 100644
--- a/drivers/power/88pm860x_battery.c
+++ b/drivers/power/88pm860x_battery.c
@@ -954,47 +954,33 @@ static int pm860x_battery_probe(struct platform_device *pdev)
else
info->resistor = 300; /* set default internal resistor */
- info->battery = power_supply_register(&pdev->dev, &pm860x_battery_desc,
- NULL);
+ info->battery = devm_power_supply_register(&pdev->dev,
+ &pm860x_battery_desc,
+ NULL);
if (IS_ERR(info->battery))
return PTR_ERR(info->battery);
info->battery->dev.parent = &pdev->dev;
- ret = request_threaded_irq(info->irq_cc, NULL,
- pm860x_coulomb_handler, IRQF_ONESHOT,
- "coulomb", info);
+ ret = devm_request_threaded_irq(chip->dev, info->irq_cc, NULL,
+ pm860x_coulomb_handler, IRQF_ONESHOT,
+ "coulomb", info);
if (ret < 0) {
dev_err(chip->dev, "Failed to request IRQ: #%d: %d\n",
info->irq_cc, ret);
- goto out_reg;
+ return ret;
}
- ret = request_threaded_irq(info->irq_batt, NULL, pm860x_batt_handler,
- IRQF_ONESHOT, "battery", info);
+ ret = devm_request_threaded_irq(chip->dev, info->irq_batt, NULL,
+ pm860x_batt_handler,
+ IRQF_ONESHOT, "battery", info);
if (ret < 0) {
dev_err(chip->dev, "Failed to request IRQ: #%d: %d\n",
info->irq_batt, ret);
- goto out_coulomb;
+ return ret;
}
return 0;
-
-out_coulomb:
- free_irq(info->irq_cc, info);
-out_reg:
- power_supply_unregister(info->battery);
- return ret;
-}
-
-static int pm860x_battery_remove(struct platform_device *pdev)
-{
- struct pm860x_battery_info *info = platform_get_drvdata(pdev);
-
- free_irq(info->irq_batt, info);
- free_irq(info->irq_cc, info);
- power_supply_unregister(info->battery);
- return 0;
}
#ifdef CONFIG_PM_SLEEP
@@ -1028,7 +1014,6 @@ static struct platform_driver pm860x_battery_driver = {
.pm = &pm860x_battery_pm_ops,
},
.probe = pm860x_battery_probe,
- .remove = pm860x_battery_remove,
};
module_platform_driver(pm860x_battery_driver);
diff --git a/drivers/power/Kconfig b/drivers/power/Kconfig
index f8758d6febf8..02b3b313809a 100644
--- a/drivers/power/Kconfig
+++ b/drivers/power/Kconfig
@@ -157,26 +157,25 @@ config BATTERY_SBS
Say Y to include support for SBS battery driver for SBS-compliant
gas gauges.
-config BATTERY_BQ27x00
- tristate "BQ27x00 battery driver"
- depends on I2C || I2C=n
+config BATTERY_BQ27XXX
+ tristate "BQ27xxx battery driver"
help
- Say Y here to enable support for batteries with BQ27x00 (I2C/HDQ) chips.
+ Say Y here to enable support for batteries with BQ27xxx (I2C/HDQ) chips.
-config BATTERY_BQ27X00_I2C
- bool "BQ27200/BQ27500 support"
- depends on BATTERY_BQ27x00
+config BATTERY_BQ27XXX_I2C
+ bool "BQ27xxx I2C support"
+ depends on BATTERY_BQ27XXX
depends on I2C
default y
help
- Say Y here to enable support for batteries with BQ27x00 (I2C) chips.
+ Say Y here to enable support for batteries with BQ27xxx (I2C) chips.
-config BATTERY_BQ27X00_PLATFORM
- bool "BQ27000 support"
- depends on BATTERY_BQ27x00
+config BATTERY_BQ27XXX_PLATFORM
+ bool "BQ27xxx HDQ support"
+ depends on BATTERY_BQ27XXX
default y
help
- Say Y here to enable support for batteries with BQ27000 (HDQ) chips.
+ Say Y here to enable support for batteries with BQ27xxx (HDQ) chips.
config BATTERY_DA9030
tristate "DA9030 battery driver"
@@ -313,7 +312,7 @@ config CHARGER_MAX8903
config CHARGER_TWL4030
tristate "OMAP TWL4030 BCI charger driver"
- depends on TWL4030_CORE
+ depends on IIO && TWL4030_CORE
help
Say Y here to enable support for TWL4030 Battery Charge Interface.
@@ -379,6 +378,18 @@ config CHARGER_MAX8998
Say Y to enable support for the battery charger control sysfs and
platform data of MAX8998/LP3974 PMICs.
+config CHARGER_QCOM_SMBB
+ tristate "Qualcomm Switch-Mode Battery Charger and Boost"
+ depends on MFD_SPMI_PMIC || COMPILE_TEST
+ depends on OF
+ help
+ Say Y to include support for the Switch-Mode Battery Charger and
+ Boost (SMBB) hardware found in Qualcomm PM8941 PMICs. The charger
+ is an integrated, single-cell lithium-ion battery charger. DT
+ configuration is required for loading, see the devicetree
+ documentation for more detail. The base name for this driver is
+ 'pm8941_charger'.
+
config CHARGER_BQ2415X
tristate "TI BQ2415x battery charger driver"
depends on I2C
@@ -397,12 +408,13 @@ config CHARGER_BQ24190
Say Y to enable support for the TI BQ24190 battery charger.
config CHARGER_BQ24257
- tristate "TI BQ24257 battery charger driver"
+ tristate "TI BQ24250/24251/24257 battery charger driver"
depends on I2C
depends on GPIOLIB || COMPILE_TEST
depends on REGMAP_I2C
help
- Say Y to enable support for the TI BQ24257 battery charger.
+ Say Y to enable support for the TI BQ24250, BQ24251, and BQ24257 battery
+ chargers.
config CHARGER_BQ24735
tristate "TI BQ24735 battery charger support"
@@ -434,6 +446,13 @@ config CHARGER_TPS65090
Say Y here to enable support for battery charging with TPS65090
PMIC chips.
+config CHARGER_TPS65217
+ tristate "TPS65217 battery charger driver"
+ depends on MFD_TPS65217
+ help
+ Say Y here to enable support for battery charging with TPS65217
+ PMIC chips.
+
config BATTERY_GAUGE_LTC2941
tristate "LTC2941/LTC2943 Battery Gauge Driver"
depends on I2C
@@ -472,6 +491,13 @@ config CHARGER_RT9455
help
Say Y to enable support for Richtek RT9455 battery charger.
+config AXP20X_POWER
+ tristate "AXP20x power supply driver"
+ depends on MFD_AXP20X
+ help
+ This driver provides support for the power supply features of
+ AXP20x PMIC.
+
source "drivers/power/reset/Kconfig"
endif # POWER_SUPPLY
diff --git a/drivers/power/Makefile b/drivers/power/Makefile
index 5752ce818f51..b0e1bf190e3d 100644
--- a/drivers/power/Makefile
+++ b/drivers/power/Makefile
@@ -9,6 +9,7 @@ obj-$(CONFIG_GENERIC_ADC_BATTERY) += generic-adc-battery.o
obj-$(CONFIG_PDA_POWER) += pda_power.o
obj-$(CONFIG_APM_POWER) += apm_power.o
+obj-$(CONFIG_AXP20X_POWER) += axp20x_usb_power.o
obj-$(CONFIG_MAX8925_POWER) += max8925_power.o
obj-$(CONFIG_WM831X_BACKUP) += wm831x_backup.o
obj-$(CONFIG_WM831X_POWER) += wm831x_power.o
@@ -29,7 +30,7 @@ obj-$(CONFIG_BATTERY_COLLIE) += collie_battery.o
obj-$(CONFIG_BATTERY_IPAQ_MICRO) += ipaq_micro_battery.o
obj-$(CONFIG_BATTERY_WM97XX) += wm97xx_battery.o
obj-$(CONFIG_BATTERY_SBS) += sbs-battery.o
-obj-$(CONFIG_BATTERY_BQ27x00) += bq27x00_battery.o
+obj-$(CONFIG_BATTERY_BQ27XXX) += bq27xxx_battery.o
obj-$(CONFIG_BATTERY_DA9030) += da9030_battery.o
obj-$(CONFIG_BATTERY_DA9052) += da9052-battery.o
obj-$(CONFIG_CHARGER_DA9150) += da9150-charger.o
@@ -57,6 +58,7 @@ obj-$(CONFIG_CHARGER_MAX14577) += max14577_charger.o
obj-$(CONFIG_CHARGER_MAX77693) += max77693_charger.o
obj-$(CONFIG_CHARGER_MAX8997) += max8997_charger.o
obj-$(CONFIG_CHARGER_MAX8998) += max8998_charger.o
+obj-$(CONFIG_CHARGER_QCOM_SMBB) += qcom_smbb.o
obj-$(CONFIG_CHARGER_BQ2415X) += bq2415x_charger.o
obj-$(CONFIG_CHARGER_BQ24190) += bq24190_charger.o
obj-$(CONFIG_CHARGER_BQ24257) += bq24257_charger.o
@@ -65,6 +67,7 @@ obj-$(CONFIG_CHARGER_BQ25890) += bq25890_charger.o
obj-$(CONFIG_POWER_AVS) += avs/
obj-$(CONFIG_CHARGER_SMB347) += smb347-charger.o
obj-$(CONFIG_CHARGER_TPS65090) += tps65090-charger.o
+obj-$(CONFIG_CHARGER_TPS65217) += tps65217_charger.o
obj-$(CONFIG_POWER_RESET) += reset/
obj-$(CONFIG_AXP288_FUEL_GAUGE) += axp288_fuel_gauge.o
obj-$(CONFIG_AXP288_CHARGER) += axp288_charger.o
diff --git a/drivers/power/axp20x_usb_power.c b/drivers/power/axp20x_usb_power.c
new file mode 100644
index 000000000000..421a90b83567
--- /dev/null
+++ b/drivers/power/axp20x_usb_power.c
@@ -0,0 +1,248 @@
+/*
+ * AXP20x PMIC USB power supply status driver
+ *
+ * Copyright (C) 2015 Hans de Goede <hdegoede@redhat.com>
+ * Copyright (C) 2014 Bruno Prémont <bonbons@linux-vserver.org>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#include <linux/device.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <linux/mfd/axp20x.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/power_supply.h>
+#include <linux/regmap.h>
+#include <linux/slab.h>
+
+#define DRVNAME "axp20x-usb-power-supply"
+
+#define AXP20X_PWR_STATUS_VBUS_PRESENT BIT(5)
+#define AXP20X_PWR_STATUS_VBUS_USED BIT(4)
+
+#define AXP20X_USB_STATUS_VBUS_VALID BIT(2)
+
+#define AXP20X_VBUS_VHOLD_uV(b) (4000000 + (((b) >> 3) & 7) * 100000)
+#define AXP20X_VBUS_CLIMIT_MASK 3
+#define AXP20X_VBUC_CLIMIT_900mA 0
+#define AXP20X_VBUC_CLIMIT_500mA 1
+#define AXP20X_VBUC_CLIMIT_100mA 2
+#define AXP20X_VBUC_CLIMIT_NONE 3
+
+#define AXP20X_ADC_EN1_VBUS_CURR BIT(2)
+#define AXP20X_ADC_EN1_VBUS_VOLT BIT(3)
+
+#define AXP20X_VBUS_MON_VBUS_VALID BIT(3)
+
+struct axp20x_usb_power {
+ struct regmap *regmap;
+ struct power_supply *supply;
+};
+
+static irqreturn_t axp20x_usb_power_irq(int irq, void *devid)
+{
+ struct axp20x_usb_power *power = devid;
+
+ power_supply_changed(power->supply);
+
+ return IRQ_HANDLED;
+}
+
+static int axp20x_usb_power_get_property(struct power_supply *psy,
+ enum power_supply_property psp, union power_supply_propval *val)
+{
+ struct axp20x_usb_power *power = power_supply_get_drvdata(psy);
+ unsigned int input, v;
+ int ret;
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_VOLTAGE_MIN:
+ ret = regmap_read(power->regmap, AXP20X_VBUS_IPSOUT_MGMT, &v);
+ if (ret)
+ return ret;
+
+ val->intval = AXP20X_VBUS_VHOLD_uV(v);
+ return 0;
+ case POWER_SUPPLY_PROP_VOLTAGE_NOW:
+ ret = axp20x_read_variable_width(power->regmap,
+ AXP20X_VBUS_V_ADC_H, 12);
+ if (ret < 0)
+ return ret;
+
+ val->intval = ret * 1700; /* 1 step = 1.7 mV */
+ return 0;
+ case POWER_SUPPLY_PROP_CURRENT_MAX:
+ ret = regmap_read(power->regmap, AXP20X_VBUS_IPSOUT_MGMT, &v);
+ if (ret)
+ return ret;
+
+ switch (v & AXP20X_VBUS_CLIMIT_MASK) {
+ case AXP20X_VBUC_CLIMIT_100mA:
+ val->intval = 100000;
+ break;
+ case AXP20X_VBUC_CLIMIT_500mA:
+ val->intval = 500000;
+ break;
+ case AXP20X_VBUC_CLIMIT_900mA:
+ val->intval = 900000;
+ break;
+ case AXP20X_VBUC_CLIMIT_NONE:
+ val->intval = -1;
+ break;
+ }
+ return 0;
+ case POWER_SUPPLY_PROP_CURRENT_NOW:
+ ret = axp20x_read_variable_width(power->regmap,
+ AXP20X_VBUS_I_ADC_H, 12);
+ if (ret < 0)
+ return ret;
+
+ val->intval = ret * 375; /* 1 step = 0.375 mA */
+ return 0;
+ default:
+ break;
+ }
+
+ /* All the properties below need the input-status reg value */
+ ret = regmap_read(power->regmap, AXP20X_PWR_INPUT_STATUS, &input);
+ if (ret)
+ return ret;
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_HEALTH:
+ if (!(input & AXP20X_PWR_STATUS_VBUS_PRESENT)) {
+ val->intval = POWER_SUPPLY_HEALTH_UNKNOWN;
+ break;
+ }
+
+ ret = regmap_read(power->regmap, AXP20X_USB_OTG_STATUS, &v);
+ if (ret)
+ return ret;
+
+ if (!(v & AXP20X_USB_STATUS_VBUS_VALID)) {
+ val->intval = POWER_SUPPLY_HEALTH_UNSPEC_FAILURE;
+ break;
+ }
+
+ val->intval = POWER_SUPPLY_HEALTH_GOOD;
+ break;
+ case POWER_SUPPLY_PROP_PRESENT:
+ val->intval = !!(input & AXP20X_PWR_STATUS_VBUS_PRESENT);
+ break;
+ case POWER_SUPPLY_PROP_ONLINE:
+ val->intval = !!(input & AXP20X_PWR_STATUS_VBUS_USED);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static enum power_supply_property axp20x_usb_power_properties[] = {
+ POWER_SUPPLY_PROP_HEALTH,
+ POWER_SUPPLY_PROP_PRESENT,
+ POWER_SUPPLY_PROP_ONLINE,
+ POWER_SUPPLY_PROP_VOLTAGE_MIN,
+ POWER_SUPPLY_PROP_VOLTAGE_NOW,
+ POWER_SUPPLY_PROP_CURRENT_MAX,
+ POWER_SUPPLY_PROP_CURRENT_NOW,
+};
+
+static const struct power_supply_desc axp20x_usb_power_desc = {
+ .name = "axp20x-usb",
+ .type = POWER_SUPPLY_TYPE_USB,
+ .properties = axp20x_usb_power_properties,
+ .num_properties = ARRAY_SIZE(axp20x_usb_power_properties),
+ .get_property = axp20x_usb_power_get_property,
+};
+
+static int axp20x_usb_power_probe(struct platform_device *pdev)
+{
+ struct axp20x_dev *axp20x = dev_get_drvdata(pdev->dev.parent);
+ struct power_supply_config psy_cfg = {};
+ struct axp20x_usb_power *power;
+ static const char * const irq_names[] = { "VBUS_PLUGIN",
+ "VBUS_REMOVAL", "VBUS_VALID", "VBUS_NOT_VALID" };
+ int i, irq, ret;
+
+ if (!of_device_is_available(pdev->dev.of_node))
+ return -ENODEV;
+
+ if (!axp20x) {
+ dev_err(&pdev->dev, "Parent drvdata not set\n");
+ return -EINVAL;
+ }
+
+ power = devm_kzalloc(&pdev->dev, sizeof(*power), GFP_KERNEL);
+ if (!power)
+ return -ENOMEM;
+
+ power->regmap = axp20x->regmap;
+
+ /* Enable vbus valid checking */
+ ret = regmap_update_bits(power->regmap, AXP20X_VBUS_MON,
+ AXP20X_VBUS_MON_VBUS_VALID, AXP20X_VBUS_MON_VBUS_VALID);
+ if (ret)
+ return ret;
+
+ /* Enable vbus voltage and current measurement */
+ ret = regmap_update_bits(power->regmap, AXP20X_ADC_EN1,
+ AXP20X_ADC_EN1_VBUS_CURR | AXP20X_ADC_EN1_VBUS_VOLT,
+ AXP20X_ADC_EN1_VBUS_CURR | AXP20X_ADC_EN1_VBUS_VOLT);
+ if (ret)
+ return ret;
+
+ psy_cfg.of_node = pdev->dev.of_node;
+ psy_cfg.drv_data = power;
+
+ power->supply = devm_power_supply_register(&pdev->dev,
+ &axp20x_usb_power_desc, &psy_cfg);
+ if (IS_ERR(power->supply))
+ return PTR_ERR(power->supply);
+
+ /* Request irqs after registering, as irqs may trigger immediately */
+ for (i = 0; i < ARRAY_SIZE(irq_names); i++) {
+ irq = platform_get_irq_byname(pdev, irq_names[i]);
+ if (irq < 0) {
+ dev_warn(&pdev->dev, "No IRQ for %s: %d\n",
+ irq_names[i], irq);
+ continue;
+ }
+ irq = regmap_irq_get_virq(axp20x->regmap_irqc, irq);
+ ret = devm_request_any_context_irq(&pdev->dev, irq,
+ axp20x_usb_power_irq, 0, DRVNAME, power);
+ if (ret < 0)
+ dev_warn(&pdev->dev, "Error requesting %s IRQ: %d\n",
+ irq_names[i], ret);
+ }
+
+ return 0;
+}
+
+static const struct of_device_id axp20x_usb_power_match[] = {
+ { .compatible = "x-powers,axp202-usb-power-supply" },
+ { }
+};
+MODULE_DEVICE_TABLE(of, axp20x_usb_power_match);
+
+static struct platform_driver axp20x_usb_power_driver = {
+ .probe = axp20x_usb_power_probe,
+ .driver = {
+ .name = DRVNAME,
+ .of_match_table = axp20x_usb_power_match,
+ },
+};
+
+module_platform_driver(axp20x_usb_power_driver);
+
+MODULE_AUTHOR("Hans de Goede <hdegoede@redhat.com>");
+MODULE_DESCRIPTION("AXP20x PMIC USB power supply status driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/power/bq2415x_charger.c b/drivers/power/bq2415x_charger.c
index ec212b5be755..4afd76848bce 100644
--- a/drivers/power/bq2415x_charger.c
+++ b/drivers/power/bq2415x_charger.c
@@ -1704,7 +1704,7 @@ error_4:
error_3:
bq2415x_power_supply_exit(bq);
error_2:
- if (bq->notify_node)
+ if (bq && bq->notify_node)
of_node_put(bq->notify_node);
kfree(name);
error_1:
diff --git a/drivers/power/bq24190_charger.c b/drivers/power/bq24190_charger.c
index 469a452cbe10..f5746b9f4e83 100644
--- a/drivers/power/bq24190_charger.c
+++ b/drivers/power/bq24190_charger.c
@@ -1543,5 +1543,4 @@ module_i2c_driver(bq24190_driver);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Mark A. Greer <mgreer@animalcreek.com>");
-MODULE_ALIAS("i2c:bq24190-charger");
MODULE_DESCRIPTION("TI BQ24190 Charger Driver");
diff --git a/drivers/power/bq24257_charger.c b/drivers/power/bq24257_charger.c
index 5859bc7c1616..1fea2c7ef97f 100644
--- a/drivers/power/bq24257_charger.c
+++ b/drivers/power/bq24257_charger.c
@@ -13,6 +13,10 @@
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
+ * Datasheets:
+ * http://www.ti.com/product/bq24250
+ * http://www.ti.com/product/bq24251
+ * http://www.ti.com/product/bq24257
*/
#include <linux/module.h>
@@ -36,18 +40,33 @@
#define BQ24257_REG_7 0x06
#define BQ24257_MANUFACTURER "Texas Instruments"
-#define BQ24257_STAT_IRQ "stat"
#define BQ24257_PG_GPIO "pg"
#define BQ24257_ILIM_SET_DELAY 1000 /* msec */
+/*
+ * When adding support for new devices make sure that enum bq2425x_chip and
+ * bq2425x_chip_name[] always stay in sync!
+ */
+enum bq2425x_chip {
+ BQ24250,
+ BQ24251,
+ BQ24257,
+};
+
+static const char *const bq2425x_chip_name[] = {
+ "bq24250",
+ "bq24251",
+ "bq24257",
+};
+
enum bq24257_fields {
F_WD_FAULT, F_WD_EN, F_STAT, F_FAULT, /* REG 1 */
F_RESET, F_IILIMIT, F_EN_STAT, F_EN_TERM, F_CE, F_HZ_MODE, /* REG 2 */
F_VBAT, F_USB_DET, /* REG 3 */
F_ICHG, F_ITERM, /* REG 4 */
F_LOOP_STATUS, F_LOW_CHG, F_DPDM_EN, F_CE_STATUS, F_VINDPM, /* REG 5 */
- F_X2_TMR_EN, F_TMR, F_SYSOFF, F_TS_STAT, /* REG 6 */
+ F_X2_TMR_EN, F_TMR, F_SYSOFF, F_TS_EN, F_TS_STAT, /* REG 6 */
F_VOVP, F_CLR_VDP, F_FORCE_BATDET, F_FORCE_PTM, /* REG 7 */
F_MAX_FIELDS
@@ -58,6 +77,9 @@ struct bq24257_init_data {
u8 ichg; /* charge current */
u8 vbat; /* regulation voltage */
u8 iterm; /* termination current */
+ u8 iilimit; /* input current limit */
+ u8 vovp; /* over voltage protection voltage */
+ u8 vindpm; /* VDMP input threshold voltage */
};
struct bq24257_state {
@@ -71,6 +93,8 @@ struct bq24257_device {
struct device *dev;
struct power_supply *charger;
+ enum bq2425x_chip chip;
+
struct regmap *rmap;
struct regmap_field *rmap_fields[F_MAX_FIELDS];
@@ -82,6 +106,8 @@ struct bq24257_device {
struct bq24257_state state;
struct mutex lock; /* protect state data */
+
+ bool iilimit_autoset_enable;
};
static bool bq24257_is_volatile_reg(struct device *dev, unsigned int reg)
@@ -135,6 +161,7 @@ static const struct reg_field bq24257_reg_fields[] = {
[F_X2_TMR_EN] = REG_FIELD(BQ24257_REG_6, 7, 7),
[F_TMR] = REG_FIELD(BQ24257_REG_6, 5, 6),
[F_SYSOFF] = REG_FIELD(BQ24257_REG_6, 4, 4),
+ [F_TS_EN] = REG_FIELD(BQ24257_REG_6, 3, 3),
[F_TS_STAT] = REG_FIELD(BQ24257_REG_6, 0, 2),
/* REG 7 */
[F_VOVP] = REG_FIELD(BQ24257_REG_7, 5, 7),
@@ -169,6 +196,26 @@ static const u32 bq24257_iterm_map[] = {
#define BQ24257_ITERM_MAP_SIZE ARRAY_SIZE(bq24257_iterm_map)
+static const u32 bq24257_iilimit_map[] = {
+ 100000, 150000, 500000, 900000, 1500000, 2000000
+};
+
+#define BQ24257_IILIMIT_MAP_SIZE ARRAY_SIZE(bq24257_iilimit_map)
+
+static const u32 bq24257_vovp_map[] = {
+ 6000000, 6500000, 7000000, 8000000, 9000000, 9500000, 10000000,
+ 10500000
+};
+
+#define BQ24257_VOVP_MAP_SIZE ARRAY_SIZE(bq24257_vovp_map)
+
+static const u32 bq24257_vindpm_map[] = {
+ 4200000, 4280000, 4360000, 4440000, 4520000, 4600000, 4680000,
+ 4760000
+};
+
+#define BQ24257_VINDPM_MAP_SIZE ARRAY_SIZE(bq24257_vindpm_map)
+
static int bq24257_field_read(struct bq24257_device *bq,
enum bq24257_fields field_id)
{
@@ -220,6 +267,47 @@ enum bq24257_fault {
FAULT_INPUT_LDO_LOW,
};
+static int bq24257_get_input_current_limit(struct bq24257_device *bq,
+ union power_supply_propval *val)
+{
+ int ret;
+
+ ret = bq24257_field_read(bq, F_IILIMIT);
+ if (ret < 0)
+ return ret;
+
+ /*
+ * The "External ILIM" and "Production & Test" modes are not exposed
+ * through this driver and not being covered by the lookup table.
+ * Should such a mode have become active let's return an error rather
+ * than exceeding the bounds of the lookup table and returning
+ * garbage.
+ */
+ if (ret >= BQ24257_IILIMIT_MAP_SIZE)
+ return -ENODATA;
+
+ val->intval = bq24257_iilimit_map[ret];
+
+ return 0;
+}
+
+static int bq24257_set_input_current_limit(struct bq24257_device *bq,
+ const union power_supply_propval *val)
+{
+ /*
+ * Address the case where the user manually sets an input current limit
+ * while the charger auto-detection mechanism is is active. In this
+ * case we want to abort and go straight to the user-specified value.
+ */
+ if (bq->iilimit_autoset_enable)
+ cancel_delayed_work_sync(&bq->iilimit_setup_work);
+
+ return bq24257_field_write(bq, F_IILIMIT,
+ bq24257_find_idx(val->intval,
+ bq24257_iilimit_map,
+ BQ24257_IILIMIT_MAP_SIZE));
+}
+
static int bq24257_power_supply_get_property(struct power_supply *psy,
enum power_supply_property psp,
union power_supply_propval *val)
@@ -249,6 +337,10 @@ static int bq24257_power_supply_get_property(struct power_supply *psy,
val->strval = BQ24257_MANUFACTURER;
break;
+ case POWER_SUPPLY_PROP_MODEL_NAME:
+ val->strval = bq2425x_chip_name[bq->chip];
+ break;
+
case POWER_SUPPLY_PROP_ONLINE:
val->intval = state.power_good;
break;
@@ -300,6 +392,9 @@ static int bq24257_power_supply_get_property(struct power_supply *psy,
val->intval = bq24257_iterm_map[bq->init_data.iterm];
break;
+ case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT:
+ return bq24257_get_input_current_limit(bq, val);
+
default:
return -EINVAL;
}
@@ -307,6 +402,31 @@ static int bq24257_power_supply_get_property(struct power_supply *psy,
return 0;
}
+static int bq24257_power_supply_set_property(struct power_supply *psy,
+ enum power_supply_property prop,
+ const union power_supply_propval *val)
+{
+ struct bq24257_device *bq = power_supply_get_drvdata(psy);
+
+ switch (prop) {
+ case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT:
+ return bq24257_set_input_current_limit(bq, val);
+ default:
+ return -EINVAL;
+ }
+}
+
+static int bq24257_power_supply_property_is_writeable(struct power_supply *psy,
+ enum power_supply_property psp)
+{
+ switch (psp) {
+ case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT:
+ return true;
+ default:
+ return false;
+ }
+}
+
static int bq24257_get_chip_state(struct bq24257_device *bq,
struct bq24257_state *state)
{
@@ -324,7 +444,26 @@ static int bq24257_get_chip_state(struct bq24257_device *bq,
state->fault = ret;
- state->power_good = !gpiod_get_value_cansleep(bq->pg);
+ if (bq->pg)
+ state->power_good = !gpiod_get_value_cansleep(bq->pg);
+ else
+ /*
+ * If we have a chip without a dedicated power-good GPIO or
+ * some other explicit bit that would provide this information
+ * assume the power is good if there is no supply related
+ * fault - and not good otherwise. There is a possibility for
+ * other errors to mask that power in fact is not good but this
+ * is probably the best we can do here.
+ */
+ switch (state->fault) {
+ case FAULT_INPUT_OVP:
+ case FAULT_INPUT_UVLO:
+ case FAULT_INPUT_LDO_LOW:
+ state->power_good = false;
+ break;
+ default:
+ state->power_good = true;
+ }
return 0;
}
@@ -361,6 +500,28 @@ enum bq24257_in_ilimit {
IILIMIT_NONE,
};
+enum bq24257_vovp {
+ VOVP_6000,
+ VOVP_6500,
+ VOVP_7000,
+ VOVP_8000,
+ VOVP_9000,
+ VOVP_9500,
+ VOVP_10000,
+ VOVP_10500
+};
+
+enum bq24257_vindpm {
+ VINDPM_4200,
+ VINDPM_4280,
+ VINDPM_4360,
+ VINDPM_4440,
+ VINDPM_4520,
+ VINDPM_4600,
+ VINDPM_4680,
+ VINDPM_4760
+};
+
enum bq24257_port_type {
PORT_TYPE_DCP, /* Dedicated Charging Port */
PORT_TYPE_CDP, /* Charging Downstream Port */
@@ -449,41 +610,43 @@ static void bq24257_handle_state_change(struct bq24257_device *bq,
{
int ret;
struct bq24257_state old_state;
- bool reset_iilimit = false;
- bool config_iilimit = false;
mutex_lock(&bq->lock);
old_state = bq->state;
mutex_unlock(&bq->lock);
- if (!new_state->power_good) { /* power removed */
- cancel_delayed_work_sync(&bq->iilimit_setup_work);
-
- /* activate D+/D- port detection algorithm */
- ret = bq24257_field_write(bq, F_DPDM_EN, 1);
+ /*
+ * Handle BQ2425x state changes observing whether the D+/D- based input
+ * current limit autoset functionality is enabled.
+ */
+ if (!new_state->power_good) {
+ dev_dbg(bq->dev, "Power removed\n");
+ if (bq->iilimit_autoset_enable) {
+ cancel_delayed_work_sync(&bq->iilimit_setup_work);
+
+ /* activate D+/D- port detection algorithm */
+ ret = bq24257_field_write(bq, F_DPDM_EN, 1);
+ if (ret < 0)
+ goto error;
+ }
+ /*
+ * When power is removed always return to the default input
+ * current limit as configured during probe.
+ */
+ ret = bq24257_field_write(bq, F_IILIMIT, bq->init_data.iilimit);
if (ret < 0)
goto error;
+ } else if (!old_state.power_good) {
+ dev_dbg(bq->dev, "Power inserted\n");
- reset_iilimit = true;
- } else if (!old_state.power_good) { /* power inserted */
- config_iilimit = true;
- } else if (new_state->fault == FAULT_NO_BAT) { /* battery removed */
- cancel_delayed_work_sync(&bq->iilimit_setup_work);
-
- reset_iilimit = true;
- } else if (old_state.fault == FAULT_NO_BAT) { /* battery connected */
- config_iilimit = true;
- } else if (new_state->fault == FAULT_TIMER) { /* safety timer expired */
- dev_err(bq->dev, "Safety timer expired! Battery dead?\n");
- }
-
- if (reset_iilimit) {
- ret = bq24257_field_write(bq, F_IILIMIT, IILIMIT_500);
- if (ret < 0)
- goto error;
- } else if (config_iilimit) {
- schedule_delayed_work(&bq->iilimit_setup_work,
+ if (bq->iilimit_autoset_enable)
+ /* configure input current limit */
+ schedule_delayed_work(&bq->iilimit_setup_work,
msecs_to_jiffies(BQ24257_ILIM_SET_DELAY));
+ } else if (new_state->fault == FAULT_NO_BAT) {
+ dev_warn(bq->dev, "Battery removed\n");
+ } else if (new_state->fault == FAULT_TIMER) {
+ dev_err(bq->dev, "Safety timer expired! Battery dead?\n");
}
return;
@@ -531,7 +694,9 @@ static int bq24257_hw_init(struct bq24257_device *bq)
} init_data[] = {
{F_ICHG, bq->init_data.ichg},
{F_VBAT, bq->init_data.vbat},
- {F_ITERM, bq->init_data.iterm}
+ {F_ITERM, bq->init_data.iterm},
+ {F_VOVP, bq->init_data.vovp},
+ {F_VINDPM, bq->init_data.vindpm},
};
/*
@@ -558,7 +723,16 @@ static int bq24257_hw_init(struct bq24257_device *bq)
bq->state = state;
mutex_unlock(&bq->lock);
- if (!state.power_good)
+ if (!bq->iilimit_autoset_enable) {
+ dev_dbg(bq->dev, "manually setting iilimit = %u\n",
+ bq->init_data.iilimit);
+
+ /* program fixed input current limit */
+ ret = bq24257_field_write(bq, F_IILIMIT,
+ bq->init_data.iilimit);
+ if (ret < 0)
+ return ret;
+ } else if (!state.power_good)
/* activate D+/D- detection algorithm */
ret = bq24257_field_write(bq, F_DPDM_EN, 1);
else if (state.fault != FAULT_NO_BAT)
@@ -569,6 +743,7 @@ static int bq24257_hw_init(struct bq24257_device *bq)
static enum power_supply_property bq24257_power_supply_props[] = {
POWER_SUPPLY_PROP_MANUFACTURER,
+ POWER_SUPPLY_PROP_MODEL_NAME,
POWER_SUPPLY_PROP_STATUS,
POWER_SUPPLY_PROP_ONLINE,
POWER_SUPPLY_PROP_HEALTH,
@@ -577,6 +752,7 @@ static enum power_supply_property bq24257_power_supply_props[] = {
POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE,
POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX,
POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT,
+ POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT,
};
static char *bq24257_charger_supplied_to[] = {
@@ -589,45 +765,127 @@ static const struct power_supply_desc bq24257_power_supply_desc = {
.properties = bq24257_power_supply_props,
.num_properties = ARRAY_SIZE(bq24257_power_supply_props),
.get_property = bq24257_power_supply_get_property,
+ .set_property = bq24257_power_supply_set_property,
+ .property_is_writeable = bq24257_power_supply_property_is_writeable,
};
-static int bq24257_power_supply_init(struct bq24257_device *bq)
+static ssize_t bq24257_show_ovp_voltage(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
{
- struct power_supply_config psy_cfg = { .drv_data = bq, };
+ struct power_supply *psy = dev_get_drvdata(dev);
+ struct bq24257_device *bq = power_supply_get_drvdata(psy);
- psy_cfg.supplied_to = bq24257_charger_supplied_to;
- psy_cfg.num_supplicants = ARRAY_SIZE(bq24257_charger_supplied_to);
+ return scnprintf(buf, PAGE_SIZE, "%u\n",
+ bq24257_vovp_map[bq->init_data.vovp]);
+}
- bq->charger = power_supply_register(bq->dev, &bq24257_power_supply_desc,
- &psy_cfg);
- if (IS_ERR(bq->charger))
- return PTR_ERR(bq->charger);
+static ssize_t bq24257_show_in_dpm_voltage(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct power_supply *psy = dev_get_drvdata(dev);
+ struct bq24257_device *bq = power_supply_get_drvdata(psy);
- return 0;
+ return scnprintf(buf, PAGE_SIZE, "%u\n",
+ bq24257_vindpm_map[bq->init_data.vindpm]);
}
-static int bq24257_irq_probe(struct bq24257_device *bq)
+static ssize_t bq24257_sysfs_show_enable(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
{
- struct gpio_desc *stat_irq;
+ struct power_supply *psy = dev_get_drvdata(dev);
+ struct bq24257_device *bq = power_supply_get_drvdata(psy);
+ int ret;
- stat_irq = devm_gpiod_get_index(bq->dev, BQ24257_STAT_IRQ, 0, GPIOD_IN);
- if (IS_ERR(stat_irq)) {
- dev_err(bq->dev, "could not probe stat_irq pin\n");
- return PTR_ERR(stat_irq);
- }
+ if (strcmp(attr->attr.name, "high_impedance_enable") == 0)
+ ret = bq24257_field_read(bq, F_HZ_MODE);
+ else if (strcmp(attr->attr.name, "sysoff_enable") == 0)
+ ret = bq24257_field_read(bq, F_SYSOFF);
+ else
+ return -EINVAL;
- return gpiod_to_irq(stat_irq);
+ if (ret < 0)
+ return ret;
+
+ return scnprintf(buf, PAGE_SIZE, "%d\n", ret);
}
-static int bq24257_pg_gpio_probe(struct bq24257_device *bq)
+static ssize_t bq24257_sysfs_set_enable(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf,
+ size_t count)
{
- bq->pg = devm_gpiod_get_index(bq->dev, BQ24257_PG_GPIO, 0, GPIOD_IN);
- if (IS_ERR(bq->pg)) {
- dev_err(bq->dev, "could not probe PG pin\n");
- return PTR_ERR(bq->pg);
+ struct power_supply *psy = dev_get_drvdata(dev);
+ struct bq24257_device *bq = power_supply_get_drvdata(psy);
+ long val;
+ int ret;
+
+ if (kstrtol(buf, 10, &val) < 0)
+ return -EINVAL;
+
+ if (strcmp(attr->attr.name, "high_impedance_enable") == 0)
+ ret = bq24257_field_write(bq, F_HZ_MODE, (bool)val);
+ else if (strcmp(attr->attr.name, "sysoff_enable") == 0)
+ ret = bq24257_field_write(bq, F_SYSOFF, (bool)val);
+ else
+ return -EINVAL;
+
+ if (ret < 0)
+ return ret;
+
+ return count;
+}
+
+static DEVICE_ATTR(ovp_voltage, S_IRUGO, bq24257_show_ovp_voltage, NULL);
+static DEVICE_ATTR(in_dpm_voltage, S_IRUGO, bq24257_show_in_dpm_voltage, NULL);
+static DEVICE_ATTR(high_impedance_enable, S_IWUSR | S_IRUGO,
+ bq24257_sysfs_show_enable, bq24257_sysfs_set_enable);
+static DEVICE_ATTR(sysoff_enable, S_IWUSR | S_IRUGO,
+ bq24257_sysfs_show_enable, bq24257_sysfs_set_enable);
+
+static struct attribute *bq24257_charger_attr[] = {
+ &dev_attr_ovp_voltage.attr,
+ &dev_attr_in_dpm_voltage.attr,
+ &dev_attr_high_impedance_enable.attr,
+ &dev_attr_sysoff_enable.attr,
+ NULL,
+};
+
+static const struct attribute_group bq24257_attr_group = {
+ .attrs = bq24257_charger_attr,
+};
+
+static int bq24257_power_supply_init(struct bq24257_device *bq)
+{
+ struct power_supply_config psy_cfg = { .drv_data = bq, };
+
+ psy_cfg.supplied_to = bq24257_charger_supplied_to;
+ psy_cfg.num_supplicants = ARRAY_SIZE(bq24257_charger_supplied_to);
+
+ bq->charger = devm_power_supply_register(bq->dev,
+ &bq24257_power_supply_desc,
+ &psy_cfg);
+
+ return PTR_ERR_OR_ZERO(bq->charger);
+}
+
+static void bq24257_pg_gpio_probe(struct bq24257_device *bq)
+{
+ bq->pg = devm_gpiod_get_optional(bq->dev, BQ24257_PG_GPIO, GPIOD_IN);
+
+ if (PTR_ERR(bq->pg) == -EPROBE_DEFER) {
+ dev_info(bq->dev, "probe retry requested for PG pin\n");
+ return;
+ } else if (IS_ERR(bq->pg)) {
+ dev_err(bq->dev, "error probing PG pin\n");
+ bq->pg = NULL;
+ return;
}
- return 0;
+ if (bq->pg)
+ dev_dbg(bq->dev, "probed PG pin = %d\n", desc_to_gpio(bq->pg));
}
static int bq24257_fw_probe(struct bq24257_device *bq)
@@ -635,6 +893,7 @@ static int bq24257_fw_probe(struct bq24257_device *bq)
int ret;
u32 property;
+ /* Required properties */
ret = device_property_read_u32(bq->dev, "ti,charge-current", &property);
if (ret < 0)
return ret;
@@ -658,6 +917,43 @@ static int bq24257_fw_probe(struct bq24257_device *bq)
bq->init_data.iterm = bq24257_find_idx(property, bq24257_iterm_map,
BQ24257_ITERM_MAP_SIZE);
+ /* Optional properties. If not provided use reasonable default. */
+ ret = device_property_read_u32(bq->dev, "ti,current-limit",
+ &property);
+ if (ret < 0) {
+ bq->iilimit_autoset_enable = true;
+
+ /*
+ * Explicitly set a default value which will be needed for
+ * devices that don't support the automatic setting of the input
+ * current limit through the charger type detection mechanism.
+ */
+ bq->init_data.iilimit = IILIMIT_500;
+ } else
+ bq->init_data.iilimit =
+ bq24257_find_idx(property,
+ bq24257_iilimit_map,
+ BQ24257_IILIMIT_MAP_SIZE);
+
+ ret = device_property_read_u32(bq->dev, "ti,ovp-voltage",
+ &property);
+ if (ret < 0)
+ bq->init_data.vovp = VOVP_6500;
+ else
+ bq->init_data.vovp = bq24257_find_idx(property,
+ bq24257_vovp_map,
+ BQ24257_VOVP_MAP_SIZE);
+
+ ret = device_property_read_u32(bq->dev, "ti,in-dpm-voltage",
+ &property);
+ if (ret < 0)
+ bq->init_data.vindpm = VINDPM_4360;
+ else
+ bq->init_data.vindpm =
+ bq24257_find_idx(property,
+ bq24257_vindpm_map,
+ BQ24257_VINDPM_MAP_SIZE);
+
return 0;
}
@@ -666,6 +962,7 @@ static int bq24257_probe(struct i2c_client *client,
{
struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
struct device *dev = &client->dev;
+ const struct acpi_device_id *acpi_id;
struct bq24257_device *bq;
int ret;
int i;
@@ -682,6 +979,18 @@ static int bq24257_probe(struct i2c_client *client,
bq->client = client;
bq->dev = dev;
+ if (ACPI_HANDLE(dev)) {
+ acpi_id = acpi_match_device(dev->driver->acpi_match_table,
+ &client->dev);
+ if (!acpi_id) {
+ dev_err(dev, "Failed to match ACPI device\n");
+ return -ENODEV;
+ }
+ bq->chip = (enum bq2425x_chip)acpi_id->driver_data;
+ } else {
+ bq->chip = (enum bq2425x_chip)id->driver_data;
+ }
+
mutex_init(&bq->lock);
bq->rmap = devm_regmap_init_i2c(client, &bq24257_regmap_config);
@@ -703,8 +1012,6 @@ static int bq24257_probe(struct i2c_client *client,
i2c_set_clientdata(client, bq);
- INIT_DELAYED_WORK(&bq->iilimit_setup_work, bq24257_iilimit_setup_work);
-
if (!dev->platform_data) {
ret = bq24257_fw_probe(bq);
if (ret < 0) {
@@ -715,10 +1022,31 @@ static int bq24257_probe(struct i2c_client *client,
return -ENODEV;
}
- /* we can only check Power Good status by probing the PG pin */
- ret = bq24257_pg_gpio_probe(bq);
- if (ret < 0)
- return ret;
+ /*
+ * The BQ24250 doesn't support the D+/D- based charger type detection
+ * used for the automatic setting of the input current limit setting so
+ * explicitly disable that feature.
+ */
+ if (bq->chip == BQ24250)
+ bq->iilimit_autoset_enable = false;
+
+ if (bq->iilimit_autoset_enable)
+ INIT_DELAYED_WORK(&bq->iilimit_setup_work,
+ bq24257_iilimit_setup_work);
+
+ /*
+ * The BQ24250 doesn't have a dedicated Power Good (PG) pin so let's
+ * not probe for it and instead use a SW-based approach to determine
+ * the PG state. We also use a SW-based approach for all other devices
+ * if the PG pin is either not defined or can't be probed.
+ */
+ if (bq->chip != BQ24250)
+ bq24257_pg_gpio_probe(bq);
+
+ if (PTR_ERR(bq->pg) == -EPROBE_DEFER)
+ return PTR_ERR(bq->pg);
+ else if (!bq->pg)
+ dev_info(bq->dev, "using SW-based power-good detection\n");
/* reset all registers to defaults */
ret = bq24257_field_write(bq, F_RESET, 1);
@@ -740,36 +1068,39 @@ static int bq24257_probe(struct i2c_client *client,
return ret;
}
- if (client->irq <= 0)
- client->irq = bq24257_irq_probe(bq);
-
- if (client->irq < 0) {
- dev_err(dev, "no irq resource found\n");
- return client->irq;
- }
-
ret = devm_request_threaded_irq(dev, client->irq, NULL,
bq24257_irq_handler_thread,
IRQF_TRIGGER_FALLING |
IRQF_TRIGGER_RISING | IRQF_ONESHOT,
- BQ24257_STAT_IRQ, bq);
- if (ret)
+ bq2425x_chip_name[bq->chip], bq);
+ if (ret) {
+ dev_err(dev, "Failed to request IRQ #%d\n", client->irq);
return ret;
+ }
ret = bq24257_power_supply_init(bq);
- if (ret < 0)
+ if (ret < 0) {
dev_err(dev, "Failed to register power supply\n");
+ return ret;
+ }
- return ret;
+ ret = sysfs_create_group(&bq->charger->dev.kobj, &bq24257_attr_group);
+ if (ret < 0) {
+ dev_err(dev, "Can't create sysfs entries\n");
+ return ret;
+ }
+
+ return 0;
}
static int bq24257_remove(struct i2c_client *client)
{
struct bq24257_device *bq = i2c_get_clientdata(client);
- cancel_delayed_work_sync(&bq->iilimit_setup_work);
+ if (bq->iilimit_autoset_enable)
+ cancel_delayed_work_sync(&bq->iilimit_setup_work);
- power_supply_unregister(bq->charger);
+ sysfs_remove_group(&bq->charger->dev.kobj, &bq24257_attr_group);
bq24257_field_write(bq, F_RESET, 1); /* reset to defaults */
@@ -782,7 +1113,8 @@ static int bq24257_suspend(struct device *dev)
struct bq24257_device *bq = dev_get_drvdata(dev);
int ret = 0;
- cancel_delayed_work_sync(&bq->iilimit_setup_work);
+ if (bq->iilimit_autoset_enable)
+ cancel_delayed_work_sync(&bq->iilimit_setup_work);
/* reset all registers to default (and activate standalone mode) */
ret = bq24257_field_write(bq, F_RESET, 1);
@@ -823,19 +1155,25 @@ static const struct dev_pm_ops bq24257_pm = {
};
static const struct i2c_device_id bq24257_i2c_ids[] = {
- { "bq24257", 0 },
+ { "bq24250", BQ24250 },
+ { "bq24251", BQ24251 },
+ { "bq24257", BQ24257 },
{},
};
MODULE_DEVICE_TABLE(i2c, bq24257_i2c_ids);
static const struct of_device_id bq24257_of_match[] = {
+ { .compatible = "ti,bq24250", },
+ { .compatible = "ti,bq24251", },
{ .compatible = "ti,bq24257", },
{ },
};
MODULE_DEVICE_TABLE(of, bq24257_of_match);
static const struct acpi_device_id bq24257_acpi_match[] = {
- {"BQ242570", 0},
+ { "BQ242500", BQ24250 },
+ { "BQ242510", BQ24251 },
+ { "BQ242570", BQ24257 },
{},
};
MODULE_DEVICE_TABLE(acpi, bq24257_acpi_match);
diff --git a/drivers/power/bq27x00_battery.c b/drivers/power/bq27x00_battery.c
deleted file mode 100644
index 8287261fd978..000000000000
--- a/drivers/power/bq27x00_battery.c
+++ /dev/null
@@ -1,1129 +0,0 @@
-/*
- * BQ27x00 battery driver
- *
- * Copyright (C) 2008 Rodolfo Giometti <giometti@linux.it>
- * Copyright (C) 2008 Eurotech S.p.A. <info@eurotech.it>
- * Copyright (C) 2010-2011 Lars-Peter Clausen <lars@metafoo.de>
- * Copyright (C) 2011 Pali Rohár <pali.rohar@gmail.com>
- *
- * Based on a previous work by Copyright (C) 2008 Texas Instruments, Inc.
- *
- * This package is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * THIS PACKAGE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
- * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
- *
- * Datasheets:
- * http://focus.ti.com/docs/prod/folders/print/bq27000.html
- * http://focus.ti.com/docs/prod/folders/print/bq27500.html
- * http://www.ti.com/product/bq27425-g1
- * http://www.ti.com/product/BQ27742-G1
- * http://www.ti.com/product/BQ27510-G3
- */
-
-#include <linux/device.h>
-#include <linux/module.h>
-#include <linux/param.h>
-#include <linux/jiffies.h>
-#include <linux/workqueue.h>
-#include <linux/delay.h>
-#include <linux/platform_device.h>
-#include <linux/power_supply.h>
-#include <linux/idr.h>
-#include <linux/i2c.h>
-#include <linux/slab.h>
-#include <asm/unaligned.h>
-
-#include <linux/power/bq27x00_battery.h>
-
-#define DRIVER_VERSION "1.2.0"
-
-#define BQ27XXX_MANUFACTURER "Texas Instruments"
-
-#define BQ27x00_REG_TEMP 0x06
-#define BQ27x00_REG_VOLT 0x08
-#define BQ27x00_REG_AI 0x14
-#define BQ27x00_REG_FLAGS 0x0A
-#define BQ27x00_REG_TTE 0x16
-#define BQ27x00_REG_TTF 0x18
-#define BQ27x00_REG_TTECP 0x26
-#define BQ27x00_REG_NAC 0x0C /* Nominal available capacity */
-#define BQ27x00_REG_LMD 0x12 /* Last measured discharge */
-#define BQ27x00_REG_CYCT 0x2A /* Cycle count total */
-#define BQ27x00_REG_AE 0x22 /* Available energy */
-#define BQ27x00_POWER_AVG 0x24
-
-#define BQ27000_REG_RSOC 0x0B /* Relative State-of-Charge */
-#define BQ27000_REG_ILMD 0x76 /* Initial last measured discharge */
-#define BQ27000_FLAG_EDVF BIT(0) /* Final End-of-Discharge-Voltage flag */
-#define BQ27000_FLAG_EDV1 BIT(1) /* First End-of-Discharge-Voltage flag */
-#define BQ27000_FLAG_CI BIT(4) /* Capacity Inaccurate flag */
-#define BQ27000_FLAG_FC BIT(5)
-#define BQ27000_FLAG_CHGS BIT(7) /* Charge state flag */
-
-#define BQ27500_REG_SOC 0x2C
-#define BQ27500_REG_DCAP 0x3C /* Design capacity */
-#define BQ27500_FLAG_DSC BIT(0)
-#define BQ27500_FLAG_SOCF BIT(1) /* State-of-Charge threshold final */
-#define BQ27500_FLAG_SOC1 BIT(2) /* State-of-Charge threshold 1 */
-#define BQ27500_FLAG_FC BIT(9)
-#define BQ27500_FLAG_OTC BIT(15)
-
-#define BQ27742_POWER_AVG 0x76
-
-#define BQ27510_REG_SOC 0x20
-#define BQ27510_REG_DCAP 0x2E /* Design capacity */
-#define BQ27510_REG_CYCT 0x1E /* Cycle count total */
-
-/* bq27425 register addresses are same as bq27x00 addresses minus 4 */
-#define BQ27425_REG_OFFSET 0x04
-#define BQ27425_REG_SOC (0x1C + BQ27425_REG_OFFSET)
-#define BQ27425_REG_DCAP (0x3C + BQ27425_REG_OFFSET)
-
-#define BQ27000_RS 20 /* Resistor sense */
-#define BQ27x00_POWER_CONSTANT (256 * 29200 / 1000)
-
-struct bq27x00_device_info;
-struct bq27x00_access_methods {
- int (*read)(struct bq27x00_device_info *di, u8 reg, bool single);
-};
-
-enum bq27x00_chip { BQ27000, BQ27500, BQ27425, BQ27742, BQ27510};
-
-struct bq27x00_reg_cache {
- int temperature;
- int time_to_empty;
- int time_to_empty_avg;
- int time_to_full;
- int charge_full;
- int cycle_count;
- int capacity;
- int energy;
- int flags;
- int power_avg;
- int health;
-};
-
-struct bq27x00_device_info {
- struct device *dev;
- int id;
- enum bq27x00_chip chip;
-
- struct bq27x00_reg_cache cache;
- int charge_design_full;
-
- unsigned long last_update;
- struct delayed_work work;
-
- struct power_supply *bat;
-
- struct bq27x00_access_methods bus;
-
- struct mutex lock;
-};
-
-static enum power_supply_property bq27x00_battery_props[] = {
- POWER_SUPPLY_PROP_STATUS,
- POWER_SUPPLY_PROP_PRESENT,
- POWER_SUPPLY_PROP_VOLTAGE_NOW,
- POWER_SUPPLY_PROP_CURRENT_NOW,
- POWER_SUPPLY_PROP_CAPACITY,
- POWER_SUPPLY_PROP_CAPACITY_LEVEL,
- POWER_SUPPLY_PROP_TEMP,
- POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW,
- POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG,
- POWER_SUPPLY_PROP_TIME_TO_FULL_NOW,
- POWER_SUPPLY_PROP_TECHNOLOGY,
- POWER_SUPPLY_PROP_CHARGE_FULL,
- POWER_SUPPLY_PROP_CHARGE_NOW,
- POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
- POWER_SUPPLY_PROP_CYCLE_COUNT,
- POWER_SUPPLY_PROP_ENERGY_NOW,
- POWER_SUPPLY_PROP_POWER_AVG,
- POWER_SUPPLY_PROP_HEALTH,
- POWER_SUPPLY_PROP_MANUFACTURER,
-};
-
-static enum power_supply_property bq27425_battery_props[] = {
- POWER_SUPPLY_PROP_STATUS,
- POWER_SUPPLY_PROP_PRESENT,
- POWER_SUPPLY_PROP_VOLTAGE_NOW,
- POWER_SUPPLY_PROP_CURRENT_NOW,
- POWER_SUPPLY_PROP_CAPACITY,
- POWER_SUPPLY_PROP_CAPACITY_LEVEL,
- POWER_SUPPLY_PROP_TEMP,
- POWER_SUPPLY_PROP_TECHNOLOGY,
- POWER_SUPPLY_PROP_CHARGE_FULL,
- POWER_SUPPLY_PROP_CHARGE_NOW,
- POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
- POWER_SUPPLY_PROP_MANUFACTURER,
-};
-
-static enum power_supply_property bq27742_battery_props[] = {
- POWER_SUPPLY_PROP_STATUS,
- POWER_SUPPLY_PROP_PRESENT,
- POWER_SUPPLY_PROP_VOLTAGE_NOW,
- POWER_SUPPLY_PROP_CURRENT_NOW,
- POWER_SUPPLY_PROP_CAPACITY,
- POWER_SUPPLY_PROP_CAPACITY_LEVEL,
- POWER_SUPPLY_PROP_TEMP,
- POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW,
- POWER_SUPPLY_PROP_TECHNOLOGY,
- POWER_SUPPLY_PROP_CHARGE_FULL,
- POWER_SUPPLY_PROP_CHARGE_NOW,
- POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
- POWER_SUPPLY_PROP_CYCLE_COUNT,
- POWER_SUPPLY_PROP_POWER_AVG,
- POWER_SUPPLY_PROP_HEALTH,
- POWER_SUPPLY_PROP_MANUFACTURER,
-};
-
-static enum power_supply_property bq27510_battery_props[] = {
- POWER_SUPPLY_PROP_STATUS,
- POWER_SUPPLY_PROP_PRESENT,
- POWER_SUPPLY_PROP_VOLTAGE_NOW,
- POWER_SUPPLY_PROP_CURRENT_NOW,
- POWER_SUPPLY_PROP_CAPACITY,
- POWER_SUPPLY_PROP_CAPACITY_LEVEL,
- POWER_SUPPLY_PROP_TEMP,
- POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW,
- POWER_SUPPLY_PROP_TECHNOLOGY,
- POWER_SUPPLY_PROP_CHARGE_FULL,
- POWER_SUPPLY_PROP_CHARGE_NOW,
- POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
- POWER_SUPPLY_PROP_CYCLE_COUNT,
- POWER_SUPPLY_PROP_POWER_AVG,
- POWER_SUPPLY_PROP_HEALTH,
- POWER_SUPPLY_PROP_MANUFACTURER,
-};
-
-static unsigned int poll_interval = 360;
-module_param(poll_interval, uint, 0644);
-MODULE_PARM_DESC(poll_interval,
- "battery poll interval in seconds - 0 disables polling");
-
-/*
- * Common code for BQ27x00 devices
- */
-
-static inline int bq27x00_read(struct bq27x00_device_info *di, u8 reg,
- bool single)
-{
- if (di->chip == BQ27425)
- return di->bus.read(di, reg - BQ27425_REG_OFFSET, single);
- return di->bus.read(di, reg, single);
-}
-
-/*
- * Higher versions of the chip like BQ27425 and BQ27500
- * differ from BQ27000 and BQ27200 in calculation of certain
- * parameters. Hence we need to check for the chip type.
- */
-static bool bq27xxx_is_chip_version_higher(struct bq27x00_device_info *di)
-{
- if (di->chip == BQ27425 || di->chip == BQ27500 || di->chip == BQ27742
- || di->chip == BQ27510)
- return true;
- return false;
-}
-
-/*
- * Return the battery Relative State-of-Charge
- * Or < 0 if something fails.
- */
-static int bq27x00_battery_read_rsoc(struct bq27x00_device_info *di)
-{
- int rsoc;
-
- if (di->chip == BQ27500 || di->chip == BQ27742)
- rsoc = bq27x00_read(di, BQ27500_REG_SOC, false);
- else if (di->chip == BQ27510)
- rsoc = bq27x00_read(di, BQ27510_REG_SOC, false);
- else if (di->chip == BQ27425)
- rsoc = bq27x00_read(di, BQ27425_REG_SOC, false);
- else
- rsoc = bq27x00_read(di, BQ27000_REG_RSOC, true);
-
- if (rsoc < 0)
- dev_dbg(di->dev, "error reading relative State-of-Charge\n");
-
- return rsoc;
-}
-
-/*
- * Return a battery charge value in µAh
- * Or < 0 if something fails.
- */
-static int bq27x00_battery_read_charge(struct bq27x00_device_info *di, u8 reg)
-{
- int charge;
-
- charge = bq27x00_read(di, reg, false);
- if (charge < 0) {
- dev_dbg(di->dev, "error reading charge register %02x: %d\n",
- reg, charge);
- return charge;
- }
-
- if (bq27xxx_is_chip_version_higher(di))
- charge *= 1000;
- else
- charge = charge * 3570 / BQ27000_RS;
-
- return charge;
-}
-
-/*
- * Return the battery Nominal available capaciy in µAh
- * Or < 0 if something fails.
- */
-static inline int bq27x00_battery_read_nac(struct bq27x00_device_info *di)
-{
- int flags;
- bool is_bq27500 = di->chip == BQ27500;
- bool is_bq27742 = di->chip == BQ27742;
- bool is_higher = bq27xxx_is_chip_version_higher(di);
- bool flags_1b = !(is_bq27500 || is_bq27742);
-
- flags = bq27x00_read(di, BQ27x00_REG_FLAGS, flags_1b);
- if (flags >= 0 && !is_higher && (flags & BQ27000_FLAG_CI))
- return -ENODATA;
-
- return bq27x00_battery_read_charge(di, BQ27x00_REG_NAC);
-}
-
-/*
- * Return the battery Last measured discharge in µAh
- * Or < 0 if something fails.
- */
-static inline int bq27x00_battery_read_lmd(struct bq27x00_device_info *di)
-{
- return bq27x00_battery_read_charge(di, BQ27x00_REG_LMD);
-}
-
-/*
- * Return the battery Initial last measured discharge in µAh
- * Or < 0 if something fails.
- */
-static int bq27x00_battery_read_ilmd(struct bq27x00_device_info *di)
-{
- int ilmd;
-
- if (bq27xxx_is_chip_version_higher(di)) {
- if (di->chip == BQ27425)
- ilmd = bq27x00_read(di, BQ27425_REG_DCAP, false);
- else if (di->chip == BQ27510)
- ilmd = bq27x00_read(di, BQ27510_REG_DCAP, false);
- else
- ilmd = bq27x00_read(di, BQ27500_REG_DCAP, false);
- } else {
- ilmd = bq27x00_read(di, BQ27000_REG_ILMD, true);
- }
-
- if (ilmd < 0) {
- dev_dbg(di->dev, "error reading initial last measured discharge\n");
- return ilmd;
- }
-
- if (bq27xxx_is_chip_version_higher(di))
- ilmd *= 1000;
- else
- ilmd = ilmd * 256 * 3570 / BQ27000_RS;
-
- return ilmd;
-}
-
-/*
- * Return the battery Available energy in µWh
- * Or < 0 if something fails.
- */
-static int bq27x00_battery_read_energy(struct bq27x00_device_info *di)
-{
- int ae;
-
- ae = bq27x00_read(di, BQ27x00_REG_AE, false);
- if (ae < 0) {
- dev_dbg(di->dev, "error reading available energy\n");
- return ae;
- }
-
- if (di->chip == BQ27500)
- ae *= 1000;
- else
- ae = ae * 29200 / BQ27000_RS;
-
- return ae;
-}
-
-/*
- * Return the battery temperature in tenths of degree Kelvin
- * Or < 0 if something fails.
- */
-static int bq27x00_battery_read_temperature(struct bq27x00_device_info *di)
-{
- int temp;
-
- temp = bq27x00_read(di, BQ27x00_REG_TEMP, false);
- if (temp < 0) {
- dev_err(di->dev, "error reading temperature\n");
- return temp;
- }
-
- if (!bq27xxx_is_chip_version_higher(di))
- temp = 5 * temp / 2;
-
- return temp;
-}
-
-/*
- * Return the battery Cycle count total
- * Or < 0 if something fails.
- */
-static int bq27x00_battery_read_cyct(struct bq27x00_device_info *di)
-{
- int cyct;
-
- if (di->chip == BQ27510)
- cyct = bq27x00_read(di, BQ27510_REG_CYCT, false);
- else
- cyct = bq27x00_read(di, BQ27x00_REG_CYCT, false);
- if (cyct < 0)
- dev_err(di->dev, "error reading cycle count total\n");
-
- return cyct;
-}
-
-/*
- * Read a time register.
- * Return < 0 if something fails.
- */
-static int bq27x00_battery_read_time(struct bq27x00_device_info *di, u8 reg)
-{
- int tval;
-
- tval = bq27x00_read(di, reg, false);
- if (tval < 0) {
- dev_dbg(di->dev, "error reading time register %02x: %d\n",
- reg, tval);
- return tval;
- }
-
- if (tval == 65535)
- return -ENODATA;
-
- return tval * 60;
-}
-
-/*
- * Read a power avg register.
- * Return < 0 if something fails.
- */
-static int bq27x00_battery_read_pwr_avg(struct bq27x00_device_info *di, u8 reg)
-{
- int tval;
-
- tval = bq27x00_read(di, reg, false);
- if (tval < 0) {
- dev_err(di->dev, "error reading power avg rgister %02x: %d\n",
- reg, tval);
- return tval;
- }
-
- if (di->chip == BQ27500)
- return tval;
- else
- return (tval * BQ27x00_POWER_CONSTANT) / BQ27000_RS;
-}
-
-/*
- * Read flag register.
- * Return < 0 if something fails.
- */
-static int bq27x00_battery_read_health(struct bq27x00_device_info *di)
-{
- int tval;
-
- tval = bq27x00_read(di, BQ27x00_REG_FLAGS, false);
- if (tval < 0) {
- dev_err(di->dev, "error reading flag register:%d\n", tval);
- return tval;
- }
-
- if (di->chip == BQ27500) {
- if (tval & BQ27500_FLAG_SOCF)
- tval = POWER_SUPPLY_HEALTH_DEAD;
- else if (tval & BQ27500_FLAG_OTC)
- tval = POWER_SUPPLY_HEALTH_OVERHEAT;
- else
- tval = POWER_SUPPLY_HEALTH_GOOD;
- return tval;
- } else if (di->chip == BQ27510) {
- if (tval & BQ27500_FLAG_OTC)
- return POWER_SUPPLY_HEALTH_OVERHEAT;
- return POWER_SUPPLY_HEALTH_GOOD;
- } else {
- if (tval & BQ27000_FLAG_EDV1)
- tval = POWER_SUPPLY_HEALTH_DEAD;
- else
- tval = POWER_SUPPLY_HEALTH_GOOD;
- return tval;
- }
-
- return -1;
-}
-
-static void bq27x00_update(struct bq27x00_device_info *di)
-{
- struct bq27x00_reg_cache cache = {0, };
- bool is_bq27500 = di->chip == BQ27500;
- bool is_bq27510 = di->chip == BQ27510;
- bool is_bq27425 = di->chip == BQ27425;
- bool is_bq27742 = di->chip == BQ27742;
- bool flags_1b = !(is_bq27500 || is_bq27742);
-
- cache.flags = bq27x00_read(di, BQ27x00_REG_FLAGS, flags_1b);
- if ((cache.flags & 0xff) == 0xff)
- /* read error */
- cache.flags = -1;
- if (cache.flags >= 0) {
- if (!is_bq27500 && !is_bq27425 && !is_bq27742 && !is_bq27510
- && (cache.flags & BQ27000_FLAG_CI)) {
- dev_info(di->dev, "battery is not calibrated! ignoring capacity values\n");
- cache.capacity = -ENODATA;
- cache.energy = -ENODATA;
- cache.time_to_empty = -ENODATA;
- cache.time_to_empty_avg = -ENODATA;
- cache.time_to_full = -ENODATA;
- cache.charge_full = -ENODATA;
- cache.health = -ENODATA;
- } else {
- cache.capacity = bq27x00_battery_read_rsoc(di);
- if (is_bq27742 || is_bq27510)
- cache.time_to_empty =
- bq27x00_battery_read_time(di,
- BQ27x00_REG_TTE);
- else if (!is_bq27425) {
- cache.energy = bq27x00_battery_read_energy(di);
- cache.time_to_empty =
- bq27x00_battery_read_time(di,
- BQ27x00_REG_TTE);
- cache.time_to_empty_avg =
- bq27x00_battery_read_time(di,
- BQ27x00_REG_TTECP);
- cache.time_to_full =
- bq27x00_battery_read_time(di,
- BQ27x00_REG_TTF);
- }
- cache.charge_full = bq27x00_battery_read_lmd(di);
- cache.health = bq27x00_battery_read_health(di);
- }
- cache.temperature = bq27x00_battery_read_temperature(di);
- if (!is_bq27425)
- cache.cycle_count = bq27x00_battery_read_cyct(di);
- if (is_bq27742)
- cache.power_avg =
- bq27x00_battery_read_pwr_avg(di,
- BQ27742_POWER_AVG);
- else
- cache.power_avg =
- bq27x00_battery_read_pwr_avg(di,
- BQ27x00_POWER_AVG);
-
- /* We only have to read charge design full once */
- if (di->charge_design_full <= 0)
- di->charge_design_full = bq27x00_battery_read_ilmd(di);
- }
-
- if (di->cache.capacity != cache.capacity)
- power_supply_changed(di->bat);
-
- if (memcmp(&di->cache, &cache, sizeof(cache)) != 0)
- di->cache = cache;
-
- di->last_update = jiffies;
-}
-
-static void bq27x00_battery_poll(struct work_struct *work)
-{
- struct bq27x00_device_info *di =
- container_of(work, struct bq27x00_device_info, work.work);
-
- bq27x00_update(di);
-
- if (poll_interval > 0) {
- /* The timer does not have to be accurate. */
- set_timer_slack(&di->work.timer, poll_interval * HZ / 4);
- schedule_delayed_work(&di->work, poll_interval * HZ);
- }
-}
-
-/*
- * Return the battery average current in µA
- * Note that current can be negative signed as well
- * Or 0 if something fails.
- */
-static int bq27x00_battery_current(struct bq27x00_device_info *di,
- union power_supply_propval *val)
-{
- int curr;
- int flags;
-
- curr = bq27x00_read(di, BQ27x00_REG_AI, false);
- if (curr < 0) {
- dev_err(di->dev, "error reading current\n");
- return curr;
- }
-
- if (bq27xxx_is_chip_version_higher(di)) {
- /* bq27500 returns signed value */
- val->intval = (int)((s16)curr) * 1000;
- } else {
- flags = bq27x00_read(di, BQ27x00_REG_FLAGS, false);
- if (flags & BQ27000_FLAG_CHGS) {
- dev_dbg(di->dev, "negative current!\n");
- curr = -curr;
- }
-
- val->intval = curr * 3570 / BQ27000_RS;
- }
-
- return 0;
-}
-
-static int bq27x00_battery_status(struct bq27x00_device_info *di,
- union power_supply_propval *val)
-{
- int status;
-
- if (bq27xxx_is_chip_version_higher(di)) {
- if (di->cache.flags & BQ27500_FLAG_FC)
- status = POWER_SUPPLY_STATUS_FULL;
- else if (di->cache.flags & BQ27500_FLAG_DSC)
- status = POWER_SUPPLY_STATUS_DISCHARGING;
- else
- status = POWER_SUPPLY_STATUS_CHARGING;
- } else {
- if (di->cache.flags & BQ27000_FLAG_FC)
- status = POWER_SUPPLY_STATUS_FULL;
- else if (di->cache.flags & BQ27000_FLAG_CHGS)
- status = POWER_SUPPLY_STATUS_CHARGING;
- else if (power_supply_am_i_supplied(di->bat))
- status = POWER_SUPPLY_STATUS_NOT_CHARGING;
- else
- status = POWER_SUPPLY_STATUS_DISCHARGING;
- }
-
- val->intval = status;
-
- return 0;
-}
-
-static int bq27x00_battery_capacity_level(struct bq27x00_device_info *di,
- union power_supply_propval *val)
-{
- int level;
-
- if (bq27xxx_is_chip_version_higher(di)) {
- if (di->cache.flags & BQ27500_FLAG_FC)
- level = POWER_SUPPLY_CAPACITY_LEVEL_FULL;
- else if (di->cache.flags & BQ27500_FLAG_SOC1)
- level = POWER_SUPPLY_CAPACITY_LEVEL_LOW;
- else if (di->cache.flags & BQ27500_FLAG_SOCF)
- level = POWER_SUPPLY_CAPACITY_LEVEL_CRITICAL;
- else
- level = POWER_SUPPLY_CAPACITY_LEVEL_NORMAL;
- } else {
- 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
- level = POWER_SUPPLY_CAPACITY_LEVEL_NORMAL;
- }
-
- val->intval = level;
-
- return 0;
-}
-
-/*
- * Return the battery Voltage in millivolts
- * Or < 0 if something fails.
- */
-static int bq27x00_battery_voltage(struct bq27x00_device_info *di,
- union power_supply_propval *val)
-{
- int volt;
-
- volt = bq27x00_read(di, BQ27x00_REG_VOLT, false);
- if (volt < 0) {
- dev_err(di->dev, "error reading voltage\n");
- return volt;
- }
-
- val->intval = volt * 1000;
-
- return 0;
-}
-
-static int bq27x00_simple_value(int value,
- union power_supply_propval *val)
-{
- if (value < 0)
- return value;
-
- val->intval = value;
-
- return 0;
-}
-
-static int bq27x00_battery_get_property(struct power_supply *psy,
- enum power_supply_property psp,
- union power_supply_propval *val)
-{
- int ret = 0;
- struct bq27x00_device_info *di = power_supply_get_drvdata(psy);
-
- mutex_lock(&di->lock);
- if (time_is_before_jiffies(di->last_update + 5 * HZ)) {
- cancel_delayed_work_sync(&di->work);
- bq27x00_battery_poll(&di->work.work);
- }
- mutex_unlock(&di->lock);
-
- if (psp != POWER_SUPPLY_PROP_PRESENT && di->cache.flags < 0)
- return -ENODEV;
-
- switch (psp) {
- case POWER_SUPPLY_PROP_STATUS:
- ret = bq27x00_battery_status(di, val);
- break;
- case POWER_SUPPLY_PROP_VOLTAGE_NOW:
- ret = bq27x00_battery_voltage(di, val);
- break;
- case POWER_SUPPLY_PROP_PRESENT:
- val->intval = di->cache.flags < 0 ? 0 : 1;
- break;
- case POWER_SUPPLY_PROP_CURRENT_NOW:
- ret = bq27x00_battery_current(di, val);
- break;
- case POWER_SUPPLY_PROP_CAPACITY:
- ret = bq27x00_simple_value(di->cache.capacity, val);
- break;
- case POWER_SUPPLY_PROP_CAPACITY_LEVEL:
- ret = bq27x00_battery_capacity_level(di, val);
- break;
- case POWER_SUPPLY_PROP_TEMP:
- ret = bq27x00_simple_value(di->cache.temperature, val);
- if (ret == 0)
- val->intval -= 2731;
- break;
- case POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW:
- ret = bq27x00_simple_value(di->cache.time_to_empty, val);
- break;
- case POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG:
- ret = bq27x00_simple_value(di->cache.time_to_empty_avg, val);
- break;
- case POWER_SUPPLY_PROP_TIME_TO_FULL_NOW:
- ret = bq27x00_simple_value(di->cache.time_to_full, val);
- break;
- case POWER_SUPPLY_PROP_TECHNOLOGY:
- val->intval = POWER_SUPPLY_TECHNOLOGY_LION;
- break;
- case POWER_SUPPLY_PROP_CHARGE_NOW:
- ret = bq27x00_simple_value(bq27x00_battery_read_nac(di), val);
- break;
- case POWER_SUPPLY_PROP_CHARGE_FULL:
- ret = bq27x00_simple_value(di->cache.charge_full, val);
- break;
- case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN:
- ret = bq27x00_simple_value(di->charge_design_full, val);
- break;
- case POWER_SUPPLY_PROP_CYCLE_COUNT:
- ret = bq27x00_simple_value(di->cache.cycle_count, val);
- break;
- case POWER_SUPPLY_PROP_ENERGY_NOW:
- ret = bq27x00_simple_value(di->cache.energy, val);
- break;
- case POWER_SUPPLY_PROP_POWER_AVG:
- ret = bq27x00_simple_value(di->cache.power_avg, val);
- break;
- case POWER_SUPPLY_PROP_HEALTH:
- ret = bq27x00_simple_value(di->cache.health, val);
- break;
- case POWER_SUPPLY_PROP_MANUFACTURER:
- val->strval = BQ27XXX_MANUFACTURER;
- break;
- default:
- return -EINVAL;
- }
-
- return ret;
-}
-
-static void bq27x00_external_power_changed(struct power_supply *psy)
-{
- struct bq27x00_device_info *di = power_supply_get_drvdata(psy);
-
- cancel_delayed_work_sync(&di->work);
- schedule_delayed_work(&di->work, 0);
-}
-
-static int bq27x00_powersupply_init(struct bq27x00_device_info *di,
- const char *name)
-{
- int ret;
- struct power_supply_desc *psy_desc;
- struct power_supply_config psy_cfg = { .drv_data = di, };
-
- psy_desc = devm_kzalloc(di->dev, sizeof(*psy_desc), GFP_KERNEL);
- if (!psy_desc)
- return -ENOMEM;
-
- psy_desc->name = name;
- psy_desc->type = POWER_SUPPLY_TYPE_BATTERY;
- if (di->chip == BQ27425) {
- psy_desc->properties = bq27425_battery_props;
- psy_desc->num_properties = ARRAY_SIZE(bq27425_battery_props);
- } else if (di->chip == BQ27742) {
- psy_desc->properties = bq27742_battery_props;
- psy_desc->num_properties = ARRAY_SIZE(bq27742_battery_props);
- } else if (di->chip == BQ27510) {
- psy_desc->properties = bq27510_battery_props;
- psy_desc->num_properties = ARRAY_SIZE(bq27510_battery_props);
- } else {
- psy_desc->properties = bq27x00_battery_props;
- psy_desc->num_properties = ARRAY_SIZE(bq27x00_battery_props);
- }
- psy_desc->get_property = bq27x00_battery_get_property;
- psy_desc->external_power_changed = bq27x00_external_power_changed;
-
- INIT_DELAYED_WORK(&di->work, bq27x00_battery_poll);
- mutex_init(&di->lock);
-
- di->bat = power_supply_register_no_ws(di->dev, psy_desc, &psy_cfg);
- if (IS_ERR(di->bat)) {
- ret = PTR_ERR(di->bat);
- dev_err(di->dev, "failed to register battery: %d\n", ret);
- return ret;
- }
-
- dev_info(di->dev, "support ver. %s enabled\n", DRIVER_VERSION);
-
- bq27x00_update(di);
-
- return 0;
-}
-
-static void bq27x00_powersupply_unregister(struct bq27x00_device_info *di)
-{
- /*
- * power_supply_unregister call bq27x00_battery_get_property which
- * call bq27x00_battery_poll.
- * Make sure that bq27x00_battery_poll will not call
- * schedule_delayed_work again after unregister (which cause OOPS).
- */
- poll_interval = 0;
-
- cancel_delayed_work_sync(&di->work);
-
- power_supply_unregister(di->bat);
-
- mutex_destroy(&di->lock);
-}
-
-/* i2c specific code */
-#ifdef CONFIG_BATTERY_BQ27X00_I2C
-
-/* If the system has several batteries we need a different name for each
- * of them...
- */
-static DEFINE_IDR(battery_id);
-static DEFINE_MUTEX(battery_mutex);
-
-static int bq27x00_read_i2c(struct bq27x00_device_info *di, u8 reg, bool single)
-{
- struct i2c_client *client = to_i2c_client(di->dev);
- struct i2c_msg msg[2];
- unsigned char data[2];
- int ret;
-
- if (!client->adapter)
- return -ENODEV;
-
- msg[0].addr = client->addr;
- msg[0].flags = 0;
- msg[0].buf = &reg;
- msg[0].len = sizeof(reg);
- msg[1].addr = client->addr;
- msg[1].flags = I2C_M_RD;
- msg[1].buf = data;
- if (single)
- msg[1].len = 1;
- else
- msg[1].len = 2;
-
- ret = i2c_transfer(client->adapter, msg, ARRAY_SIZE(msg));
- if (ret < 0)
- return ret;
-
- if (!single)
- ret = get_unaligned_le16(data);
- else
- ret = data[0];
-
- return ret;
-}
-
-static int bq27x00_battery_probe(struct i2c_client *client,
- const struct i2c_device_id *id)
-{
- char *name;
- struct bq27x00_device_info *di;
- int num;
- int retval = 0;
-
- /* Get new ID for the new battery device */
- mutex_lock(&battery_mutex);
- num = idr_alloc(&battery_id, client, 0, 0, GFP_KERNEL);
- mutex_unlock(&battery_mutex);
- if (num < 0)
- return num;
-
- name = devm_kasprintf(&client->dev, GFP_KERNEL, "%s-%d", id->name, num);
- if (!name) {
- retval = -ENOMEM;
- goto batt_failed;
- }
-
- di = devm_kzalloc(&client->dev, sizeof(*di), GFP_KERNEL);
- if (!di) {
- retval = -ENOMEM;
- goto batt_failed;
- }
-
- di->id = num;
- di->dev = &client->dev;
- di->chip = id->driver_data;
- di->bus.read = &bq27x00_read_i2c;
-
- retval = bq27x00_powersupply_init(di, name);
- if (retval)
- goto batt_failed;
-
- i2c_set_clientdata(client, di);
-
- return 0;
-
-batt_failed:
- mutex_lock(&battery_mutex);
- idr_remove(&battery_id, num);
- mutex_unlock(&battery_mutex);
-
- return retval;
-}
-
-static int bq27x00_battery_remove(struct i2c_client *client)
-{
- struct bq27x00_device_info *di = i2c_get_clientdata(client);
-
- bq27x00_powersupply_unregister(di);
-
- mutex_lock(&battery_mutex);
- idr_remove(&battery_id, di->id);
- mutex_unlock(&battery_mutex);
-
- return 0;
-}
-
-static const struct i2c_device_id bq27x00_id[] = {
- { "bq27200", BQ27000 }, /* bq27200 is same as bq27000, but with i2c */
- { "bq27500", BQ27500 },
- { "bq27425", BQ27425 },
- { "bq27742", BQ27742 },
- { "bq27510", BQ27510 },
- {},
-};
-MODULE_DEVICE_TABLE(i2c, bq27x00_id);
-
-static struct i2c_driver bq27x00_battery_driver = {
- .driver = {
- .name = "bq27x00-battery",
- },
- .probe = bq27x00_battery_probe,
- .remove = bq27x00_battery_remove,
- .id_table = bq27x00_id,
-};
-
-static inline int bq27x00_battery_i2c_init(void)
-{
- int ret = i2c_add_driver(&bq27x00_battery_driver);
-
- if (ret)
- pr_err("Unable to register BQ27x00 i2c driver\n");
-
- return ret;
-}
-
-static inline void bq27x00_battery_i2c_exit(void)
-{
- i2c_del_driver(&bq27x00_battery_driver);
-}
-
-#else
-
-static inline int bq27x00_battery_i2c_init(void) { return 0; }
-static inline void bq27x00_battery_i2c_exit(void) {};
-
-#endif
-
-/* platform specific code */
-#ifdef CONFIG_BATTERY_BQ27X00_PLATFORM
-
-static int bq27000_read_platform(struct bq27x00_device_info *di, u8 reg,
- bool single)
-{
- struct device *dev = di->dev;
- struct bq27000_platform_data *pdata = dev->platform_data;
- unsigned int timeout = 3;
- int upper, lower;
- int temp;
-
- if (!single) {
- /* Make sure the value has not changed in between reading the
- * lower and the upper part */
- upper = pdata->read(dev, reg + 1);
- do {
- temp = upper;
- if (upper < 0)
- return upper;
-
- lower = pdata->read(dev, reg);
- if (lower < 0)
- return lower;
-
- upper = pdata->read(dev, reg + 1);
- } while (temp != upper && --timeout);
-
- if (timeout == 0)
- return -EIO;
-
- return (upper << 8) | lower;
- }
-
- return pdata->read(dev, reg);
-}
-
-static int bq27000_battery_probe(struct platform_device *pdev)
-{
- struct bq27x00_device_info *di;
- struct bq27000_platform_data *pdata = pdev->dev.platform_data;
- const char *name;
-
- if (!pdata) {
- dev_err(&pdev->dev, "no platform_data supplied\n");
- return -EINVAL;
- }
-
- if (!pdata->read) {
- dev_err(&pdev->dev, "no hdq read callback supplied\n");
- return -EINVAL;
- }
-
- di = devm_kzalloc(&pdev->dev, sizeof(*di), GFP_KERNEL);
- if (!di)
- return -ENOMEM;
-
- platform_set_drvdata(pdev, di);
-
- di->dev = &pdev->dev;
- di->chip = BQ27000;
-
- name = pdata->name ?: dev_name(&pdev->dev);
- di->bus.read = &bq27000_read_platform;
-
- return bq27x00_powersupply_init(di, name);
-}
-
-static int bq27000_battery_remove(struct platform_device *pdev)
-{
- struct bq27x00_device_info *di = platform_get_drvdata(pdev);
-
- bq27x00_powersupply_unregister(di);
-
- return 0;
-}
-
-static struct platform_driver bq27000_battery_driver = {
- .probe = bq27000_battery_probe,
- .remove = bq27000_battery_remove,
- .driver = {
- .name = "bq27000-battery",
- },
-};
-
-static inline int bq27x00_battery_platform_init(void)
-{
- int ret = platform_driver_register(&bq27000_battery_driver);
-
- if (ret)
- pr_err("Unable to register BQ27000 platform driver\n");
-
- return ret;
-}
-
-static inline void bq27x00_battery_platform_exit(void)
-{
- platform_driver_unregister(&bq27000_battery_driver);
-}
-
-#else
-
-static inline int bq27x00_battery_platform_init(void) { return 0; }
-static inline void bq27x00_battery_platform_exit(void) {};
-
-#endif
-
-/*
- * Module stuff
- */
-
-static int __init bq27x00_battery_init(void)
-{
- int ret;
-
- ret = bq27x00_battery_i2c_init();
- if (ret)
- return ret;
-
- ret = bq27x00_battery_platform_init();
- if (ret)
- bq27x00_battery_i2c_exit();
-
- return ret;
-}
-module_init(bq27x00_battery_init);
-
-static void __exit bq27x00_battery_exit(void)
-{
- bq27x00_battery_platform_exit();
- bq27x00_battery_i2c_exit();
-}
-module_exit(bq27x00_battery_exit);
-
-#ifdef CONFIG_BATTERY_BQ27X00_PLATFORM
-MODULE_ALIAS("platform:bq27000-battery");
-#endif
-
-#ifdef CONFIG_BATTERY_BQ27X00_I2C
-MODULE_ALIAS("i2c:bq27000-battery");
-#endif
-
-MODULE_AUTHOR("Rodolfo Giometti <giometti@linux.it>");
-MODULE_DESCRIPTION("BQ27x00 battery monitor driver");
-MODULE_LICENSE("GPL");
diff --git a/drivers/power/bq27xxx_battery.c b/drivers/power/bq27xxx_battery.c
new file mode 100644
index 000000000000..880233ce9343
--- /dev/null
+++ b/drivers/power/bq27xxx_battery.c
@@ -0,0 +1,1375 @@
+/*
+ * BQ27xxx battery driver
+ *
+ * Copyright (C) 2008 Rodolfo Giometti <giometti@linux.it>
+ * Copyright (C) 2008 Eurotech S.p.A. <info@eurotech.it>
+ * Copyright (C) 2010-2011 Lars-Peter Clausen <lars@metafoo.de>
+ * Copyright (C) 2011 Pali Rohár <pali.rohar@gmail.com>
+ *
+ * Based on a previous work by Copyright (C) 2008 Texas Instruments, Inc.
+ *
+ * This package is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * THIS PACKAGE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
+ * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * Datasheets:
+ * http://www.ti.com/product/bq27000
+ * http://www.ti.com/product/bq27200
+ * http://www.ti.com/product/bq27010
+ * http://www.ti.com/product/bq27210
+ * http://www.ti.com/product/bq27500
+ * http://www.ti.com/product/bq27510-g3
+ * http://www.ti.com/product/bq27520-g4
+ * http://www.ti.com/product/bq27530-g1
+ * http://www.ti.com/product/bq27531-g1
+ * http://www.ti.com/product/bq27541-g1
+ * http://www.ti.com/product/bq27542-g1
+ * http://www.ti.com/product/bq27546-g1
+ * http://www.ti.com/product/bq27742-g1
+ * http://www.ti.com/product/bq27545-g1
+ * http://www.ti.com/product/bq27421-g1
+ * http://www.ti.com/product/bq27425-g1
+ * http://www.ti.com/product/bq27411-g1
+ * http://www.ti.com/product/bq27621-g1
+ */
+
+#include <linux/device.h>
+#include <linux/module.h>
+#include <linux/param.h>
+#include <linux/jiffies.h>
+#include <linux/workqueue.h>
+#include <linux/delay.h>
+#include <linux/platform_device.h>
+#include <linux/power_supply.h>
+#include <linux/idr.h>
+#include <linux/i2c.h>
+#include <linux/slab.h>
+#include <linux/interrupt.h>
+#include <asm/unaligned.h>
+
+#include <linux/power/bq27xxx_battery.h>
+
+#define DRIVER_VERSION "1.2.0"
+
+#define BQ27XXX_MANUFACTURER "Texas Instruments"
+
+/* BQ27XXX Flags */
+#define BQ27XXX_FLAG_DSC BIT(0)
+#define BQ27XXX_FLAG_SOCF BIT(1) /* State-of-Charge threshold final */
+#define BQ27XXX_FLAG_SOC1 BIT(2) /* State-of-Charge threshold 1 */
+#define BQ27XXX_FLAG_FC BIT(9)
+#define BQ27XXX_FLAG_OTD BIT(14)
+#define BQ27XXX_FLAG_OTC BIT(15)
+#define BQ27XXX_FLAG_UT BIT(14)
+#define BQ27XXX_FLAG_OT BIT(15)
+
+/* BQ27000 has different layout for Flags register */
+#define BQ27000_FLAG_EDVF BIT(0) /* Final End-of-Discharge-Voltage flag */
+#define BQ27000_FLAG_EDV1 BIT(1) /* First End-of-Discharge-Voltage flag */
+#define BQ27000_FLAG_CI BIT(4) /* Capacity Inaccurate flag */
+#define BQ27000_FLAG_FC BIT(5)
+#define BQ27000_FLAG_CHGS BIT(7) /* Charge state flag */
+
+#define BQ27XXX_RS (20) /* Resistor sense mOhm */
+#define BQ27XXX_POWER_CONSTANT (29200) /* 29.2 µV^2 * 1000 */
+#define BQ27XXX_CURRENT_CONSTANT (3570) /* 3.57 µV * 1000 */
+
+struct bq27xxx_device_info;
+struct bq27xxx_access_methods {
+ int (*read)(struct bq27xxx_device_info *di, u8 reg, bool single);
+};
+
+#define INVALID_REG_ADDR 0xff
+
+/*
+ * bq27xxx_reg_index - Register names
+ *
+ * These are indexes into a device's register mapping array.
+ */
+enum bq27xxx_reg_index {
+ BQ27XXX_REG_CTRL = 0, /* Control */
+ BQ27XXX_REG_TEMP, /* Temperature */
+ BQ27XXX_REG_INT_TEMP, /* Internal Temperature */
+ BQ27XXX_REG_VOLT, /* Voltage */
+ BQ27XXX_REG_AI, /* Average Current */
+ BQ27XXX_REG_FLAGS, /* Flags */
+ BQ27XXX_REG_TTE, /* Time-to-Empty */
+ BQ27XXX_REG_TTF, /* Time-to-Full */
+ BQ27XXX_REG_TTES, /* Time-to-Empty Standby */
+ BQ27XXX_REG_TTECP, /* Time-to-Empty at Constant Power */
+ BQ27XXX_REG_NAC, /* Nominal Available Capacity */
+ BQ27XXX_REG_FCC, /* Full Charge Capacity */
+ BQ27XXX_REG_CYCT, /* Cycle Count */
+ BQ27XXX_REG_AE, /* Available Energy */
+ BQ27XXX_REG_SOC, /* State-of-Charge */
+ BQ27XXX_REG_DCAP, /* Design Capacity */
+ BQ27XXX_REG_AP, /* Average Power */
+};
+
+struct bq27xxx_reg_cache {
+ int temperature;
+ int time_to_empty;
+ int time_to_empty_avg;
+ int time_to_full;
+ int charge_full;
+ int cycle_count;
+ int capacity;
+ int energy;
+ int flags;
+ int power_avg;
+ int health;
+};
+
+struct bq27xxx_device_info {
+ struct device *dev;
+ int id;
+ enum bq27xxx_chip chip;
+
+ struct bq27xxx_reg_cache cache;
+ int charge_design_full;
+
+ unsigned long last_update;
+ struct delayed_work work;
+
+ struct power_supply *bat;
+
+ struct bq27xxx_access_methods bus;
+
+ struct mutex lock;
+
+ u8 *regs;
+};
+
+/* Register mappings */
+static u8 bq27000_regs[] = {
+ 0x00, /* CONTROL */
+ 0x06, /* TEMP */
+ INVALID_REG_ADDR, /* INT TEMP - NA*/
+ 0x08, /* VOLT */
+ 0x14, /* AVG CURR */
+ 0x0a, /* FLAGS */
+ 0x16, /* TTE */
+ 0x18, /* TTF */
+ 0x1c, /* TTES */
+ 0x26, /* TTECP */
+ 0x0c, /* NAC */
+ 0x12, /* LMD(FCC) */
+ 0x2a, /* CYCT */
+ 0x22, /* AE */
+ 0x0b, /* SOC(RSOC) */
+ 0x76, /* DCAP(ILMD) */
+ 0x24, /* AP */
+};
+
+static u8 bq27010_regs[] = {
+ 0x00, /* CONTROL */
+ 0x06, /* TEMP */
+ INVALID_REG_ADDR, /* INT TEMP - NA*/
+ 0x08, /* VOLT */
+ 0x14, /* AVG CURR */
+ 0x0a, /* FLAGS */
+ 0x16, /* TTE */
+ 0x18, /* TTF */
+ 0x1c, /* TTES */
+ 0x26, /* TTECP */
+ 0x0c, /* NAC */
+ 0x12, /* LMD(FCC) */
+ 0x2a, /* CYCT */
+ INVALID_REG_ADDR, /* AE - NA */
+ 0x0b, /* SOC(RSOC) */
+ 0x76, /* DCAP(ILMD) */
+ INVALID_REG_ADDR, /* AP - NA */
+};
+
+static u8 bq27500_regs[] = {
+ 0x00, /* CONTROL */
+ 0x06, /* TEMP */
+ 0x28, /* INT TEMP */
+ 0x08, /* VOLT */
+ 0x14, /* AVG CURR */
+ 0x0a, /* FLAGS */
+ 0x16, /* TTE */
+ INVALID_REG_ADDR, /* TTF - NA */
+ 0x1a, /* TTES */
+ INVALID_REG_ADDR, /* TTECP - NA */
+ 0x0c, /* NAC */
+ 0x12, /* LMD(FCC) */
+ 0x1e, /* CYCT */
+ INVALID_REG_ADDR, /* AE - NA */
+ 0x20, /* SOC(RSOC) */
+ 0x2e, /* DCAP(ILMD) */
+ INVALID_REG_ADDR, /* AP - NA */
+};
+
+static u8 bq27530_regs[] = {
+ 0x00, /* CONTROL */
+ 0x06, /* TEMP */
+ 0x32, /* INT TEMP */
+ 0x08, /* VOLT */
+ 0x14, /* AVG CURR */
+ 0x0a, /* FLAGS */
+ 0x16, /* TTE */
+ INVALID_REG_ADDR, /* TTF - NA */
+ INVALID_REG_ADDR, /* TTES - NA */
+ INVALID_REG_ADDR, /* TTECP - NA */
+ 0x0c, /* NAC */
+ 0x12, /* LMD(FCC) */
+ 0x2a, /* CYCT */
+ INVALID_REG_ADDR, /* AE - NA */
+ 0x2c, /* SOC(RSOC) */
+ INVALID_REG_ADDR, /* DCAP - NA */
+ 0x24, /* AP */
+};
+
+static u8 bq27541_regs[] = {
+ 0x00, /* CONTROL */
+ 0x06, /* TEMP */
+ 0x28, /* INT TEMP */
+ 0x08, /* VOLT */
+ 0x14, /* AVG CURR */
+ 0x0a, /* FLAGS */
+ 0x16, /* TTE */
+ INVALID_REG_ADDR, /* TTF - NA */
+ INVALID_REG_ADDR, /* TTES - NA */
+ INVALID_REG_ADDR, /* TTECP - NA */
+ 0x0c, /* NAC */
+ 0x12, /* LMD(FCC) */
+ 0x2a, /* CYCT */
+ INVALID_REG_ADDR, /* AE - NA */
+ 0x2c, /* SOC(RSOC) */
+ 0x3c, /* DCAP */
+ 0x76, /* AP */
+};
+
+static u8 bq27545_regs[] = {
+ 0x00, /* CONTROL */
+ 0x06, /* TEMP */
+ 0x28, /* INT TEMP */
+ 0x08, /* VOLT */
+ 0x14, /* AVG CURR */
+ 0x0a, /* FLAGS */
+ 0x16, /* TTE */
+ INVALID_REG_ADDR, /* TTF - NA */
+ INVALID_REG_ADDR, /* TTES - NA */
+ INVALID_REG_ADDR, /* TTECP - NA */
+ 0x0c, /* NAC */
+ 0x12, /* LMD(FCC) */
+ 0x2a, /* CYCT */
+ INVALID_REG_ADDR, /* AE - NA */
+ 0x2c, /* SOC(RSOC) */
+ INVALID_REG_ADDR, /* DCAP - NA */
+ 0x24, /* AP */
+};
+
+static u8 bq27421_regs[] = {
+ 0x00, /* CONTROL */
+ 0x02, /* TEMP */
+ 0x1e, /* INT TEMP */
+ 0x04, /* VOLT */
+ 0x10, /* AVG CURR */
+ 0x06, /* FLAGS */
+ INVALID_REG_ADDR, /* TTE - NA */
+ INVALID_REG_ADDR, /* TTF - NA */
+ INVALID_REG_ADDR, /* TTES - NA */
+ INVALID_REG_ADDR, /* TTECP - NA */
+ 0x08, /* NAC */
+ 0x0e, /* FCC */
+ INVALID_REG_ADDR, /* CYCT - NA */
+ INVALID_REG_ADDR, /* AE - NA */
+ 0x1c, /* SOC */
+ 0x3c, /* DCAP */
+ 0x18, /* AP */
+};
+
+static u8 *bq27xxx_regs[] = {
+ [BQ27000] = bq27000_regs,
+ [BQ27010] = bq27010_regs,
+ [BQ27500] = bq27500_regs,
+ [BQ27530] = bq27530_regs,
+ [BQ27541] = bq27541_regs,
+ [BQ27545] = bq27545_regs,
+ [BQ27421] = bq27421_regs,
+};
+
+static enum power_supply_property bq27000_battery_props[] = {
+ POWER_SUPPLY_PROP_STATUS,
+ POWER_SUPPLY_PROP_PRESENT,
+ POWER_SUPPLY_PROP_VOLTAGE_NOW,
+ POWER_SUPPLY_PROP_CURRENT_NOW,
+ POWER_SUPPLY_PROP_CAPACITY,
+ POWER_SUPPLY_PROP_CAPACITY_LEVEL,
+ POWER_SUPPLY_PROP_TEMP,
+ POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW,
+ POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG,
+ POWER_SUPPLY_PROP_TIME_TO_FULL_NOW,
+ POWER_SUPPLY_PROP_TECHNOLOGY,
+ POWER_SUPPLY_PROP_CHARGE_FULL,
+ POWER_SUPPLY_PROP_CHARGE_NOW,
+ POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
+ POWER_SUPPLY_PROP_CYCLE_COUNT,
+ POWER_SUPPLY_PROP_ENERGY_NOW,
+ POWER_SUPPLY_PROP_POWER_AVG,
+ POWER_SUPPLY_PROP_HEALTH,
+ POWER_SUPPLY_PROP_MANUFACTURER,
+};
+
+static enum power_supply_property bq27010_battery_props[] = {
+ POWER_SUPPLY_PROP_STATUS,
+ POWER_SUPPLY_PROP_PRESENT,
+ POWER_SUPPLY_PROP_VOLTAGE_NOW,
+ POWER_SUPPLY_PROP_CURRENT_NOW,
+ POWER_SUPPLY_PROP_CAPACITY,
+ POWER_SUPPLY_PROP_CAPACITY_LEVEL,
+ POWER_SUPPLY_PROP_TEMP,
+ POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW,
+ POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG,
+ POWER_SUPPLY_PROP_TIME_TO_FULL_NOW,
+ POWER_SUPPLY_PROP_TECHNOLOGY,
+ POWER_SUPPLY_PROP_CHARGE_FULL,
+ POWER_SUPPLY_PROP_CHARGE_NOW,
+ POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
+ POWER_SUPPLY_PROP_CYCLE_COUNT,
+ POWER_SUPPLY_PROP_HEALTH,
+ POWER_SUPPLY_PROP_MANUFACTURER,
+};
+
+static enum power_supply_property bq27500_battery_props[] = {
+ POWER_SUPPLY_PROP_STATUS,
+ POWER_SUPPLY_PROP_PRESENT,
+ POWER_SUPPLY_PROP_VOLTAGE_NOW,
+ POWER_SUPPLY_PROP_CURRENT_NOW,
+ POWER_SUPPLY_PROP_CAPACITY,
+ POWER_SUPPLY_PROP_CAPACITY_LEVEL,
+ POWER_SUPPLY_PROP_TEMP,
+ POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW,
+ POWER_SUPPLY_PROP_TECHNOLOGY,
+ POWER_SUPPLY_PROP_CHARGE_FULL,
+ POWER_SUPPLY_PROP_CHARGE_NOW,
+ POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
+ POWER_SUPPLY_PROP_CYCLE_COUNT,
+ POWER_SUPPLY_PROP_HEALTH,
+ POWER_SUPPLY_PROP_MANUFACTURER,
+};
+
+static enum power_supply_property bq27530_battery_props[] = {
+ POWER_SUPPLY_PROP_STATUS,
+ POWER_SUPPLY_PROP_PRESENT,
+ POWER_SUPPLY_PROP_VOLTAGE_NOW,
+ POWER_SUPPLY_PROP_CURRENT_NOW,
+ POWER_SUPPLY_PROP_CAPACITY,
+ POWER_SUPPLY_PROP_CAPACITY_LEVEL,
+ POWER_SUPPLY_PROP_TEMP,
+ POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW,
+ POWER_SUPPLY_PROP_TECHNOLOGY,
+ POWER_SUPPLY_PROP_CHARGE_FULL,
+ POWER_SUPPLY_PROP_CHARGE_NOW,
+ POWER_SUPPLY_PROP_POWER_AVG,
+ POWER_SUPPLY_PROP_HEALTH,
+ POWER_SUPPLY_PROP_CYCLE_COUNT,
+ POWER_SUPPLY_PROP_MANUFACTURER,
+};
+
+static enum power_supply_property bq27541_battery_props[] = {
+ POWER_SUPPLY_PROP_STATUS,
+ POWER_SUPPLY_PROP_PRESENT,
+ POWER_SUPPLY_PROP_VOLTAGE_NOW,
+ POWER_SUPPLY_PROP_CURRENT_NOW,
+ POWER_SUPPLY_PROP_CAPACITY,
+ POWER_SUPPLY_PROP_CAPACITY_LEVEL,
+ POWER_SUPPLY_PROP_TEMP,
+ POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW,
+ POWER_SUPPLY_PROP_TECHNOLOGY,
+ POWER_SUPPLY_PROP_CHARGE_FULL,
+ POWER_SUPPLY_PROP_CHARGE_NOW,
+ POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
+ POWER_SUPPLY_PROP_CYCLE_COUNT,
+ POWER_SUPPLY_PROP_POWER_AVG,
+ POWER_SUPPLY_PROP_HEALTH,
+ POWER_SUPPLY_PROP_MANUFACTURER,
+};
+
+static enum power_supply_property bq27545_battery_props[] = {
+ POWER_SUPPLY_PROP_STATUS,
+ POWER_SUPPLY_PROP_PRESENT,
+ POWER_SUPPLY_PROP_VOLTAGE_NOW,
+ POWER_SUPPLY_PROP_CURRENT_NOW,
+ POWER_SUPPLY_PROP_CAPACITY,
+ POWER_SUPPLY_PROP_CAPACITY_LEVEL,
+ POWER_SUPPLY_PROP_TEMP,
+ POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW,
+ POWER_SUPPLY_PROP_TECHNOLOGY,
+ POWER_SUPPLY_PROP_CHARGE_FULL,
+ POWER_SUPPLY_PROP_CHARGE_NOW,
+ POWER_SUPPLY_PROP_HEALTH,
+ POWER_SUPPLY_PROP_CYCLE_COUNT,
+ POWER_SUPPLY_PROP_POWER_AVG,
+ POWER_SUPPLY_PROP_MANUFACTURER,
+};
+
+static enum power_supply_property bq27421_battery_props[] = {
+ POWER_SUPPLY_PROP_STATUS,
+ POWER_SUPPLY_PROP_PRESENT,
+ POWER_SUPPLY_PROP_VOLTAGE_NOW,
+ POWER_SUPPLY_PROP_CURRENT_NOW,
+ POWER_SUPPLY_PROP_CAPACITY,
+ POWER_SUPPLY_PROP_CAPACITY_LEVEL,
+ POWER_SUPPLY_PROP_TEMP,
+ POWER_SUPPLY_PROP_TECHNOLOGY,
+ POWER_SUPPLY_PROP_CHARGE_FULL,
+ POWER_SUPPLY_PROP_CHARGE_NOW,
+ POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
+ POWER_SUPPLY_PROP_MANUFACTURER,
+};
+
+#define BQ27XXX_PROP(_id, _prop) \
+ [_id] = { \
+ .props = _prop, \
+ .size = ARRAY_SIZE(_prop), \
+ }
+
+static struct {
+ enum power_supply_property *props;
+ size_t size;
+} bq27xxx_battery_props[] = {
+ BQ27XXX_PROP(BQ27000, bq27000_battery_props),
+ BQ27XXX_PROP(BQ27010, bq27010_battery_props),
+ BQ27XXX_PROP(BQ27500, bq27500_battery_props),
+ BQ27XXX_PROP(BQ27530, bq27530_battery_props),
+ BQ27XXX_PROP(BQ27541, bq27541_battery_props),
+ BQ27XXX_PROP(BQ27545, bq27545_battery_props),
+ BQ27XXX_PROP(BQ27421, bq27421_battery_props),
+};
+
+static unsigned int poll_interval = 360;
+module_param(poll_interval, uint, 0644);
+MODULE_PARM_DESC(poll_interval,
+ "battery poll interval in seconds - 0 disables polling");
+
+/*
+ * Common code for BQ27xxx devices
+ */
+
+static inline int bq27xxx_read(struct bq27xxx_device_info *di, int reg_index,
+ bool single)
+{
+ /* Reports EINVAL for invalid/missing registers */
+ if (!di || di->regs[reg_index] == INVALID_REG_ADDR)
+ return -EINVAL;
+
+ return di->bus.read(di, di->regs[reg_index], single);
+}
+
+/*
+ * Return the battery State-of-Charge
+ * Or < 0 if something fails.
+ */
+static int bq27xxx_battery_read_soc(struct bq27xxx_device_info *di)
+{
+ int soc;
+
+ soc = bq27xxx_read(di, BQ27XXX_REG_SOC, false);
+
+ if (soc < 0)
+ dev_dbg(di->dev, "error reading State-of-Charge\n");
+
+ return soc;
+}
+
+/*
+ * Return a battery charge value in µAh
+ * Or < 0 if something fails.
+ */
+static int bq27xxx_battery_read_charge(struct bq27xxx_device_info *di, u8 reg)
+{
+ int charge;
+
+ charge = bq27xxx_read(di, reg, false);
+ if (charge < 0) {
+ dev_dbg(di->dev, "error reading charge register %02x: %d\n",
+ reg, charge);
+ return charge;
+ }
+
+ if (di->chip == BQ27000 || di->chip == BQ27010)
+ charge *= BQ27XXX_CURRENT_CONSTANT / BQ27XXX_RS;
+ else
+ charge *= 1000;
+
+ return charge;
+}
+
+/*
+ * Return the battery Nominal available capacity in µAh
+ * Or < 0 if something fails.
+ */
+static inline int bq27xxx_battery_read_nac(struct bq27xxx_device_info *di)
+{
+ int flags;
+
+ if (di->chip == BQ27000 || di->chip == BQ27010) {
+ flags = bq27xxx_read(di, BQ27XXX_REG_FLAGS, true);
+ if (flags >= 0 && (flags & BQ27000_FLAG_CI))
+ return -ENODATA;
+ }
+
+ return bq27xxx_battery_read_charge(di, BQ27XXX_REG_NAC);
+}
+
+/*
+ * Return the battery Full Charge Capacity in µAh
+ * Or < 0 if something fails.
+ */
+static inline int bq27xxx_battery_read_fcc(struct bq27xxx_device_info *di)
+{
+ return bq27xxx_battery_read_charge(di, BQ27XXX_REG_FCC);
+}
+
+/*
+ * Return the Design Capacity in µAh
+ * Or < 0 if something fails.
+ */
+static int bq27xxx_battery_read_dcap(struct bq27xxx_device_info *di)
+{
+ int dcap;
+
+ dcap = bq27xxx_read(di, BQ27XXX_REG_DCAP, false);
+
+ if (dcap < 0) {
+ dev_dbg(di->dev, "error reading initial last measured discharge\n");
+ return dcap;
+ }
+
+ if (di->chip == BQ27000 || di->chip == BQ27010)
+ dcap *= BQ27XXX_CURRENT_CONSTANT / BQ27XXX_RS;
+ else
+ dcap *= 1000;
+
+ return dcap;
+}
+
+/*
+ * Return the battery Available energy in µWh
+ * Or < 0 if something fails.
+ */
+static int bq27xxx_battery_read_energy(struct bq27xxx_device_info *di)
+{
+ int ae;
+
+ ae = bq27xxx_read(di, BQ27XXX_REG_AE, false);
+ if (ae < 0) {
+ dev_dbg(di->dev, "error reading available energy\n");
+ return ae;
+ }
+
+ if (di->chip == BQ27000 || di->chip == BQ27010)
+ ae *= BQ27XXX_POWER_CONSTANT / BQ27XXX_RS;
+ else
+ ae *= 1000;
+
+ return ae;
+}
+
+/*
+ * Return the battery temperature in tenths of degree Kelvin
+ * Or < 0 if something fails.
+ */
+static int bq27xxx_battery_read_temperature(struct bq27xxx_device_info *di)
+{
+ int temp;
+
+ temp = bq27xxx_read(di, BQ27XXX_REG_TEMP, false);
+ if (temp < 0) {
+ dev_err(di->dev, "error reading temperature\n");
+ return temp;
+ }
+
+ if (di->chip == BQ27000 || di->chip == BQ27010)
+ temp = 5 * temp / 2;
+
+ return temp;
+}
+
+/*
+ * Return the battery Cycle count total
+ * Or < 0 if something fails.
+ */
+static int bq27xxx_battery_read_cyct(struct bq27xxx_device_info *di)
+{
+ int cyct;
+
+ cyct = bq27xxx_read(di, BQ27XXX_REG_CYCT, false);
+ if (cyct < 0)
+ dev_err(di->dev, "error reading cycle count total\n");
+
+ return cyct;
+}
+
+/*
+ * Read a time register.
+ * Return < 0 if something fails.
+ */
+static int bq27xxx_battery_read_time(struct bq27xxx_device_info *di, u8 reg)
+{
+ int tval;
+
+ tval = bq27xxx_read(di, reg, false);
+ if (tval < 0) {
+ dev_dbg(di->dev, "error reading time register %02x: %d\n",
+ reg, tval);
+ return tval;
+ }
+
+ if (tval == 65535)
+ return -ENODATA;
+
+ return tval * 60;
+}
+
+/*
+ * Read an average power register.
+ * Return < 0 if something fails.
+ */
+static int bq27xxx_battery_read_pwr_avg(struct bq27xxx_device_info *di)
+{
+ int tval;
+
+ tval = bq27xxx_read(di, BQ27XXX_REG_AP, false);
+ if (tval < 0) {
+ dev_err(di->dev, "error reading average power register %02x: %d\n",
+ BQ27XXX_REG_AP, tval);
+ return tval;
+ }
+
+ if (di->chip == BQ27000 || di->chip == BQ27010)
+ return (tval * BQ27XXX_POWER_CONSTANT) / BQ27XXX_RS;
+ else
+ return tval;
+}
+
+/*
+ * Returns true if a battery over temperature condition is detected
+ */
+static bool bq27xxx_battery_overtemp(struct bq27xxx_device_info *di, u16 flags)
+{
+ if (di->chip == BQ27500 || di->chip == BQ27541 || di->chip == BQ27545)
+ return flags & (BQ27XXX_FLAG_OTC | BQ27XXX_FLAG_OTD);
+ if (di->chip == BQ27530 || di->chip == BQ27421)
+ return flags & BQ27XXX_FLAG_OT;
+
+ return false;
+}
+
+/*
+ * Returns true if a battery under temperature condition is detected
+ */
+static bool bq27xxx_battery_undertemp(struct bq27xxx_device_info *di, u16 flags)
+{
+ if (di->chip == BQ27530 || di->chip == BQ27421)
+ return flags & BQ27XXX_FLAG_UT;
+
+ return false;
+}
+
+/*
+ * Returns true if a low state of charge condition is detected
+ */
+static bool bq27xxx_battery_dead(struct bq27xxx_device_info *di, u16 flags)
+{
+ if (di->chip == BQ27000 || di->chip == BQ27010)
+ return flags & (BQ27000_FLAG_EDV1 | BQ27000_FLAG_EDVF);
+ else
+ return flags & (BQ27XXX_FLAG_SOC1 | BQ27XXX_FLAG_SOCF);
+}
+
+/*
+ * Read flag register.
+ * Return < 0 if something fails.
+ */
+static int bq27xxx_battery_read_health(struct bq27xxx_device_info *di)
+{
+ int flags;
+
+ flags = bq27xxx_read(di, BQ27XXX_REG_FLAGS, false);
+ if (flags < 0) {
+ dev_err(di->dev, "error reading flag register:%d\n", flags);
+ return flags;
+ }
+
+ /* Unlikely but important to return first */
+ if (unlikely(bq27xxx_battery_overtemp(di, flags)))
+ return POWER_SUPPLY_HEALTH_OVERHEAT;
+ if (unlikely(bq27xxx_battery_undertemp(di, flags)))
+ return POWER_SUPPLY_HEALTH_COLD;
+ if (unlikely(bq27xxx_battery_dead(di, flags)))
+ return POWER_SUPPLY_HEALTH_DEAD;
+
+ return POWER_SUPPLY_HEALTH_GOOD;
+}
+
+static void bq27xxx_battery_update(struct bq27xxx_device_info *di)
+{
+ struct bq27xxx_reg_cache cache = {0, };
+ bool has_ci_flag = di->chip == BQ27000 || di->chip == BQ27010;
+ bool has_singe_flag = di->chip == BQ27000 || di->chip == BQ27010;
+
+ cache.flags = bq27xxx_read(di, BQ27XXX_REG_FLAGS, has_singe_flag);
+ if ((cache.flags & 0xff) == 0xff)
+ cache.flags = -1; /* read error */
+ if (cache.flags >= 0) {
+ cache.temperature = bq27xxx_battery_read_temperature(di);
+ if (has_ci_flag && (cache.flags & BQ27000_FLAG_CI)) {
+ dev_info(di->dev, "battery is not calibrated! ignoring capacity values\n");
+ cache.capacity = -ENODATA;
+ cache.energy = -ENODATA;
+ cache.time_to_empty = -ENODATA;
+ cache.time_to_empty_avg = -ENODATA;
+ cache.time_to_full = -ENODATA;
+ cache.charge_full = -ENODATA;
+ cache.health = -ENODATA;
+ } else {
+ if (di->regs[BQ27XXX_REG_TTE] != INVALID_REG_ADDR)
+ cache.time_to_empty = bq27xxx_battery_read_time(di, BQ27XXX_REG_TTE);
+ if (di->regs[BQ27XXX_REG_TTECP] != INVALID_REG_ADDR)
+ cache.time_to_empty_avg = bq27xxx_battery_read_time(di, BQ27XXX_REG_TTECP);
+ if (di->regs[BQ27XXX_REG_TTF] != INVALID_REG_ADDR)
+ cache.time_to_full = bq27xxx_battery_read_time(di, BQ27XXX_REG_TTF);
+ cache.charge_full = bq27xxx_battery_read_fcc(di);
+ cache.capacity = bq27xxx_battery_read_soc(di);
+ if (di->regs[BQ27XXX_REG_AE] != INVALID_REG_ADDR)
+ cache.energy = bq27xxx_battery_read_energy(di);
+ cache.health = bq27xxx_battery_read_health(di);
+ }
+ if (di->regs[BQ27XXX_REG_CYCT] != INVALID_REG_ADDR)
+ cache.cycle_count = bq27xxx_battery_read_cyct(di);
+ if (di->regs[BQ27XXX_REG_AP] != INVALID_REG_ADDR)
+ cache.power_avg = bq27xxx_battery_read_pwr_avg(di);
+
+ /* We only have to read charge design full once */
+ if (di->charge_design_full <= 0)
+ di->charge_design_full = bq27xxx_battery_read_dcap(di);
+ }
+
+ if (di->cache.capacity != cache.capacity)
+ power_supply_changed(di->bat);
+
+ if (memcmp(&di->cache, &cache, sizeof(cache)) != 0)
+ di->cache = cache;
+
+ di->last_update = jiffies;
+}
+
+static void bq27xxx_battery_poll(struct work_struct *work)
+{
+ struct bq27xxx_device_info *di =
+ container_of(work, struct bq27xxx_device_info,
+ work.work);
+
+ bq27xxx_battery_update(di);
+
+ if (poll_interval > 0) {
+ /* The timer does not have to be accurate. */
+ set_timer_slack(&di->work.timer, poll_interval * HZ / 4);
+ schedule_delayed_work(&di->work, poll_interval * HZ);
+ }
+}
+
+/*
+ * Return the battery average current in µA
+ * Note that current can be negative signed as well
+ * Or 0 if something fails.
+ */
+static int bq27xxx_battery_current(struct bq27xxx_device_info *di,
+ union power_supply_propval *val)
+{
+ int curr;
+ int flags;
+
+ curr = bq27xxx_read(di, BQ27XXX_REG_AI, false);
+ if (curr < 0) {
+ dev_err(di->dev, "error reading current\n");
+ return curr;
+ }
+
+ if (di->chip == BQ27000 || di->chip == BQ27010) {
+ flags = bq27xxx_read(di, BQ27XXX_REG_FLAGS, false);
+ if (flags & BQ27000_FLAG_CHGS) {
+ dev_dbg(di->dev, "negative current!\n");
+ curr = -curr;
+ }
+
+ val->intval = curr * BQ27XXX_CURRENT_CONSTANT / BQ27XXX_RS;
+ } else {
+ /* Other gauges return signed value */
+ val->intval = (int)((s16)curr) * 1000;
+ }
+
+ return 0;
+}
+
+static int bq27xxx_battery_status(struct bq27xxx_device_info *di,
+ union power_supply_propval *val)
+{
+ int status;
+
+ if (di->chip == BQ27000 || di->chip == BQ27010) {
+ if (di->cache.flags & BQ27000_FLAG_FC)
+ status = POWER_SUPPLY_STATUS_FULL;
+ else if (di->cache.flags & BQ27000_FLAG_CHGS)
+ status = POWER_SUPPLY_STATUS_CHARGING;
+ else if (power_supply_am_i_supplied(di->bat))
+ status = POWER_SUPPLY_STATUS_NOT_CHARGING;
+ else
+ status = POWER_SUPPLY_STATUS_DISCHARGING;
+ } else {
+ if (di->cache.flags & BQ27XXX_FLAG_FC)
+ status = POWER_SUPPLY_STATUS_FULL;
+ else if (di->cache.flags & BQ27XXX_FLAG_DSC)
+ status = POWER_SUPPLY_STATUS_DISCHARGING;
+ else
+ status = POWER_SUPPLY_STATUS_CHARGING;
+ }
+
+ val->intval = status;
+
+ return 0;
+}
+
+static int bq27xxx_battery_capacity_level(struct bq27xxx_device_info *di,
+ union power_supply_propval *val)
+{
+ int level;
+
+ if (di->chip == BQ27000 || di->chip == BQ27010) {
+ 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
+ level = POWER_SUPPLY_CAPACITY_LEVEL_NORMAL;
+ } 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
+ level = POWER_SUPPLY_CAPACITY_LEVEL_NORMAL;
+ }
+
+ val->intval = level;
+
+ return 0;
+}
+
+/*
+ * Return the battery Voltage in millivolts
+ * Or < 0 if something fails.
+ */
+static int bq27xxx_battery_voltage(struct bq27xxx_device_info *di,
+ union power_supply_propval *val)
+{
+ int volt;
+
+ volt = bq27xxx_read(di, BQ27XXX_REG_VOLT, false);
+ if (volt < 0) {
+ dev_err(di->dev, "error reading voltage\n");
+ return volt;
+ }
+
+ val->intval = volt * 1000;
+
+ return 0;
+}
+
+static int bq27xxx_simple_value(int value,
+ union power_supply_propval *val)
+{
+ if (value < 0)
+ return value;
+
+ val->intval = value;
+
+ return 0;
+}
+
+static int bq27xxx_battery_get_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ int ret = 0;
+ struct bq27xxx_device_info *di = power_supply_get_drvdata(psy);
+
+ mutex_lock(&di->lock);
+ if (time_is_before_jiffies(di->last_update + 5 * HZ)) {
+ cancel_delayed_work_sync(&di->work);
+ bq27xxx_battery_poll(&di->work.work);
+ }
+ mutex_unlock(&di->lock);
+
+ if (psp != POWER_SUPPLY_PROP_PRESENT && di->cache.flags < 0)
+ return -ENODEV;
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_STATUS:
+ ret = bq27xxx_battery_status(di, val);
+ break;
+ case POWER_SUPPLY_PROP_VOLTAGE_NOW:
+ ret = bq27xxx_battery_voltage(di, val);
+ break;
+ case POWER_SUPPLY_PROP_PRESENT:
+ val->intval = di->cache.flags < 0 ? 0 : 1;
+ break;
+ case POWER_SUPPLY_PROP_CURRENT_NOW:
+ ret = bq27xxx_battery_current(di, val);
+ break;
+ case POWER_SUPPLY_PROP_CAPACITY:
+ ret = bq27xxx_simple_value(di->cache.capacity, val);
+ break;
+ case POWER_SUPPLY_PROP_CAPACITY_LEVEL:
+ ret = bq27xxx_battery_capacity_level(di, val);
+ break;
+ case POWER_SUPPLY_PROP_TEMP:
+ ret = bq27xxx_simple_value(di->cache.temperature, val);
+ if (ret == 0)
+ val->intval -= 2731; /* convert decidegree k to c */
+ break;
+ case POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW:
+ ret = bq27xxx_simple_value(di->cache.time_to_empty, val);
+ break;
+ case POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG:
+ ret = bq27xxx_simple_value(di->cache.time_to_empty_avg, val);
+ break;
+ case POWER_SUPPLY_PROP_TIME_TO_FULL_NOW:
+ ret = bq27xxx_simple_value(di->cache.time_to_full, val);
+ break;
+ case POWER_SUPPLY_PROP_TECHNOLOGY:
+ val->intval = POWER_SUPPLY_TECHNOLOGY_LION;
+ break;
+ case POWER_SUPPLY_PROP_CHARGE_NOW:
+ ret = bq27xxx_simple_value(bq27xxx_battery_read_nac(di), val);
+ break;
+ case POWER_SUPPLY_PROP_CHARGE_FULL:
+ ret = bq27xxx_simple_value(di->cache.charge_full, val);
+ break;
+ case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN:
+ ret = bq27xxx_simple_value(di->charge_design_full, val);
+ break;
+ case POWER_SUPPLY_PROP_CYCLE_COUNT:
+ ret = bq27xxx_simple_value(di->cache.cycle_count, val);
+ break;
+ case POWER_SUPPLY_PROP_ENERGY_NOW:
+ ret = bq27xxx_simple_value(di->cache.energy, val);
+ break;
+ case POWER_SUPPLY_PROP_POWER_AVG:
+ ret = bq27xxx_simple_value(di->cache.power_avg, val);
+ break;
+ case POWER_SUPPLY_PROP_HEALTH:
+ ret = bq27xxx_simple_value(di->cache.health, val);
+ break;
+ case POWER_SUPPLY_PROP_MANUFACTURER:
+ val->strval = BQ27XXX_MANUFACTURER;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return ret;
+}
+
+static void bq27xxx_external_power_changed(struct power_supply *psy)
+{
+ struct bq27xxx_device_info *di = power_supply_get_drvdata(psy);
+
+ cancel_delayed_work_sync(&di->work);
+ schedule_delayed_work(&di->work, 0);
+}
+
+static int bq27xxx_powersupply_init(struct bq27xxx_device_info *di,
+ const char *name)
+{
+ int ret;
+ struct power_supply_desc *psy_desc;
+ struct power_supply_config psy_cfg = { .drv_data = di, };
+
+ psy_desc = devm_kzalloc(di->dev, sizeof(*psy_desc), GFP_KERNEL);
+ if (!psy_desc)
+ return -ENOMEM;
+
+ psy_desc->name = name;
+ psy_desc->type = POWER_SUPPLY_TYPE_BATTERY;
+ psy_desc->properties = bq27xxx_battery_props[di->chip].props;
+ psy_desc->num_properties = bq27xxx_battery_props[di->chip].size;
+ psy_desc->get_property = bq27xxx_battery_get_property;
+ psy_desc->external_power_changed = bq27xxx_external_power_changed;
+
+ INIT_DELAYED_WORK(&di->work, bq27xxx_battery_poll);
+ mutex_init(&di->lock);
+
+ di->bat = power_supply_register_no_ws(di->dev, psy_desc, &psy_cfg);
+ if (IS_ERR(di->bat)) {
+ ret = PTR_ERR(di->bat);
+ dev_err(di->dev, "failed to register battery: %d\n", ret);
+ return ret;
+ }
+
+ dev_info(di->dev, "support ver. %s enabled\n", DRIVER_VERSION);
+
+ bq27xxx_battery_update(di);
+
+ return 0;
+}
+
+static void bq27xxx_powersupply_unregister(struct bq27xxx_device_info *di)
+{
+ /*
+ * power_supply_unregister call bq27xxx_battery_get_property which
+ * call bq27xxx_battery_poll.
+ * Make sure that bq27xxx_battery_poll will not call
+ * schedule_delayed_work again after unregister (which cause OOPS).
+ */
+ poll_interval = 0;
+
+ cancel_delayed_work_sync(&di->work);
+
+ power_supply_unregister(di->bat);
+
+ mutex_destroy(&di->lock);
+}
+
+/* i2c specific code */
+#ifdef CONFIG_BATTERY_BQ27XXX_I2C
+
+/* If the system has several batteries we need a different name for each
+ * of them...
+ */
+static DEFINE_IDR(battery_id);
+static DEFINE_MUTEX(battery_mutex);
+
+static irqreturn_t bq27xxx_battery_irq_handler_thread(int irq, void *data)
+{
+ struct bq27xxx_device_info *di = data;
+
+ bq27xxx_battery_update(di);
+
+ return IRQ_HANDLED;
+}
+
+static int bq27xxx_battery_i2c_read(struct bq27xxx_device_info *di, u8 reg,
+ bool single)
+{
+ struct i2c_client *client = to_i2c_client(di->dev);
+ struct i2c_msg msg[2];
+ unsigned char data[2];
+ int ret;
+
+ if (!client->adapter)
+ return -ENODEV;
+
+ msg[0].addr = client->addr;
+ msg[0].flags = 0;
+ msg[0].buf = &reg;
+ msg[0].len = sizeof(reg);
+ msg[1].addr = client->addr;
+ msg[1].flags = I2C_M_RD;
+ msg[1].buf = data;
+ if (single)
+ msg[1].len = 1;
+ else
+ msg[1].len = 2;
+
+ ret = i2c_transfer(client->adapter, msg, ARRAY_SIZE(msg));
+ if (ret < 0)
+ return ret;
+
+ if (!single)
+ ret = get_unaligned_le16(data);
+ else
+ ret = data[0];
+
+ return ret;
+}
+
+static int bq27xxx_battery_i2c_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ char *name;
+ struct bq27xxx_device_info *di;
+ int num;
+ int retval = 0;
+
+ /* Get new ID for the new battery device */
+ mutex_lock(&battery_mutex);
+ num = idr_alloc(&battery_id, client, 0, 0, GFP_KERNEL);
+ mutex_unlock(&battery_mutex);
+ if (num < 0)
+ return num;
+
+ name = devm_kasprintf(&client->dev, GFP_KERNEL, "%s-%d", id->name, num);
+ if (!name) {
+ retval = -ENOMEM;
+ goto batt_failed;
+ }
+
+ di = devm_kzalloc(&client->dev, sizeof(*di), GFP_KERNEL);
+ if (!di) {
+ retval = -ENOMEM;
+ goto batt_failed;
+ }
+
+ di->id = num;
+ di->dev = &client->dev;
+ di->chip = id->driver_data;
+ di->bus.read = &bq27xxx_battery_i2c_read;
+ di->regs = bq27xxx_regs[di->chip];
+
+ retval = bq27xxx_powersupply_init(di, name);
+ if (retval)
+ goto batt_failed;
+
+ /* Schedule a polling after about 1 min */
+ schedule_delayed_work(&di->work, 60 * HZ);
+
+ i2c_set_clientdata(client, di);
+
+ if (client->irq) {
+ retval = devm_request_threaded_irq(&client->dev, client->irq,
+ NULL, bq27xxx_battery_irq_handler_thread,
+ IRQF_ONESHOT,
+ name, di);
+ if (retval) {
+ dev_err(&client->dev,
+ "Unable to register IRQ %d error %d\n",
+ client->irq, retval);
+ return retval;
+ }
+ }
+
+ return 0;
+
+batt_failed:
+ mutex_lock(&battery_mutex);
+ idr_remove(&battery_id, num);
+ mutex_unlock(&battery_mutex);
+
+ return retval;
+}
+
+static int bq27xxx_battery_i2c_remove(struct i2c_client *client)
+{
+ struct bq27xxx_device_info *di = i2c_get_clientdata(client);
+
+ bq27xxx_powersupply_unregister(di);
+
+ mutex_lock(&battery_mutex);
+ idr_remove(&battery_id, di->id);
+ mutex_unlock(&battery_mutex);
+
+ return 0;
+}
+
+static const struct i2c_device_id bq27xxx_id[] = {
+ { "bq27200", BQ27000 },
+ { "bq27210", BQ27010 },
+ { "bq27500", BQ27500 },
+ { "bq27510", BQ27500 },
+ { "bq27520", BQ27500 },
+ { "bq27530", BQ27530 },
+ { "bq27531", BQ27530 },
+ { "bq27541", BQ27541 },
+ { "bq27542", BQ27541 },
+ { "bq27546", BQ27541 },
+ { "bq27742", BQ27541 },
+ { "bq27545", BQ27545 },
+ { "bq27421", BQ27421 },
+ { "bq27425", BQ27421 },
+ { "bq27441", BQ27421 },
+ { "bq27621", BQ27421 },
+ {},
+};
+MODULE_DEVICE_TABLE(i2c, bq27xxx_id);
+
+static struct i2c_driver bq27xxx_battery_i2c_driver = {
+ .driver = {
+ .name = "bq27xxx-battery",
+ },
+ .probe = bq27xxx_battery_i2c_probe,
+ .remove = bq27xxx_battery_i2c_remove,
+ .id_table = bq27xxx_id,
+};
+
+static inline int bq27xxx_battery_i2c_init(void)
+{
+ int ret = i2c_add_driver(&bq27xxx_battery_i2c_driver);
+
+ if (ret)
+ pr_err("Unable to register BQ27xxx i2c driver\n");
+
+ return ret;
+}
+
+static inline void bq27xxx_battery_i2c_exit(void)
+{
+ i2c_del_driver(&bq27xxx_battery_i2c_driver);
+}
+
+#else
+
+static inline int bq27xxx_battery_i2c_init(void) { return 0; }
+static inline void bq27xxx_battery_i2c_exit(void) {};
+
+#endif
+
+/* platform specific code */
+#ifdef CONFIG_BATTERY_BQ27XXX_PLATFORM
+
+static int bq27xxx_battery_platform_read(struct bq27xxx_device_info *di, u8 reg,
+ bool single)
+{
+ struct device *dev = di->dev;
+ struct bq27xxx_platform_data *pdata = dev->platform_data;
+ unsigned int timeout = 3;
+ int upper, lower;
+ int temp;
+
+ if (!single) {
+ /* Make sure the value has not changed in between reading the
+ * lower and the upper part */
+ upper = pdata->read(dev, reg + 1);
+ do {
+ temp = upper;
+ if (upper < 0)
+ return upper;
+
+ lower = pdata->read(dev, reg);
+ if (lower < 0)
+ return lower;
+
+ upper = pdata->read(dev, reg + 1);
+ } while (temp != upper && --timeout);
+
+ if (timeout == 0)
+ return -EIO;
+
+ return (upper << 8) | lower;
+ }
+
+ return pdata->read(dev, reg);
+}
+
+static int bq27xxx_battery_platform_probe(struct platform_device *pdev)
+{
+ struct bq27xxx_device_info *di;
+ struct bq27xxx_platform_data *pdata = pdev->dev.platform_data;
+ const char *name;
+
+ if (!pdata) {
+ dev_err(&pdev->dev, "no platform_data supplied\n");
+ return -EINVAL;
+ }
+
+ if (!pdata->read) {
+ dev_err(&pdev->dev, "no hdq read callback supplied\n");
+ return -EINVAL;
+ }
+
+ if (!pdata->chip) {
+ dev_err(&pdev->dev, "no device supplied\n");
+ return -EINVAL;
+ }
+
+ di = devm_kzalloc(&pdev->dev, sizeof(*di), GFP_KERNEL);
+ if (!di)
+ return -ENOMEM;
+
+ platform_set_drvdata(pdev, di);
+
+ di->dev = &pdev->dev;
+ di->chip = pdata->chip;
+ di->regs = bq27xxx_regs[di->chip];
+
+ name = pdata->name ?: dev_name(&pdev->dev);
+ di->bus.read = &bq27xxx_battery_platform_read;
+
+ return bq27xxx_powersupply_init(di, name);
+}
+
+static int bq27xxx_battery_platform_remove(struct platform_device *pdev)
+{
+ struct bq27xxx_device_info *di = platform_get_drvdata(pdev);
+
+ bq27xxx_powersupply_unregister(di);
+
+ return 0;
+}
+
+static struct platform_driver bq27xxx_battery_platform_driver = {
+ .probe = bq27xxx_battery_platform_probe,
+ .remove = bq27xxx_battery_platform_remove,
+ .driver = {
+ .name = "bq27000-battery",
+ },
+};
+
+static inline int bq27xxx_battery_platform_init(void)
+{
+ int ret = platform_driver_register(&bq27xxx_battery_platform_driver);
+
+ if (ret)
+ pr_err("Unable to register BQ27xxx platform driver\n");
+
+ return ret;
+}
+
+static inline void bq27xxx_battery_platform_exit(void)
+{
+ platform_driver_unregister(&bq27xxx_battery_platform_driver);
+}
+
+#else
+
+static inline int bq27xxx_battery_platform_init(void) { return 0; }
+static inline void bq27xxx_battery_platform_exit(void) {};
+
+#endif
+
+/*
+ * Module stuff
+ */
+
+static int __init bq27xxx_battery_init(void)
+{
+ int ret;
+
+ ret = bq27xxx_battery_i2c_init();
+ if (ret)
+ return ret;
+
+ ret = bq27xxx_battery_platform_init();
+ if (ret)
+ bq27xxx_battery_i2c_exit();
+
+ return ret;
+}
+module_init(bq27xxx_battery_init);
+
+static void __exit bq27xxx_battery_exit(void)
+{
+ bq27xxx_battery_platform_exit();
+ bq27xxx_battery_i2c_exit();
+}
+module_exit(bq27xxx_battery_exit);
+
+#ifdef CONFIG_BATTERY_BQ27XXX_PLATFORM
+MODULE_ALIAS("platform:bq27000-battery");
+#endif
+
+MODULE_AUTHOR("Rodolfo Giometti <giometti@linux.it>");
+MODULE_DESCRIPTION("BQ27xxx battery monitor driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/power/charger-manager.c b/drivers/power/charger-manager.c
index 907293e6f2a4..1ea5d1aa268b 100644
--- a/drivers/power/charger-manager.c
+++ b/drivers/power/charger-manager.c
@@ -1581,8 +1581,10 @@ static struct charger_desc *of_cm_parse_desc(struct device *dev)
cables = devm_kzalloc(dev, sizeof(*cables)
* chg_regs->num_cables,
GFP_KERNEL);
- if (!cables)
+ if (!cables) {
+ of_node_put(child);
return ERR_PTR(-ENOMEM);
+ }
chg_regs->cables = cables;
diff --git a/drivers/power/lp8727_charger.c b/drivers/power/lp8727_charger.c
index 7e741f1d3cd5..042fb3dacb46 100644
--- a/drivers/power/lp8727_charger.c
+++ b/drivers/power/lp8727_charger.c
@@ -508,23 +508,23 @@ out:
return param;
}
-static int lp8727_parse_dt(struct device *dev)
+static struct lp8727_platform_data *lp8727_parse_dt(struct device *dev)
{
struct device_node *np = dev->of_node;
struct device_node *child;
struct lp8727_platform_data *pdata;
const char *type;
- /* If charging parameter is not defined, just skip parsing the dt */
- if (of_get_child_count(np) == 0)
- goto out;
-
pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
if (!pdata)
- return -ENOMEM;
+ return ERR_PTR(-ENOMEM);
of_property_read_u32(np, "debounce-ms", &pdata->debounce_msec);
+ /* If charging parameter is not defined, just skip parsing the dt */
+ if (of_get_child_count(np) == 0)
+ return pdata;
+
for_each_child_of_node(np, child) {
of_property_read_string(child, "charger-type", &type);
@@ -535,29 +535,30 @@ static int lp8727_parse_dt(struct device *dev)
pdata->usb = lp8727_parse_charge_pdata(dev, child);
}
- dev->platform_data = pdata;
-out:
- return 0;
+ return pdata;
}
#else
-static int lp8727_parse_dt(struct device *dev)
+static struct lp8727_platform_data *lp8727_parse_dt(struct device *dev)
{
- return 0;
+ return NULL;
}
#endif
static int lp8727_probe(struct i2c_client *cl, const struct i2c_device_id *id)
{
struct lp8727_chg *pchg;
+ struct lp8727_platform_data *pdata;
int ret;
if (!i2c_check_functionality(cl->adapter, I2C_FUNC_SMBUS_I2C_BLOCK))
return -EIO;
if (cl->dev.of_node) {
- ret = lp8727_parse_dt(&cl->dev);
- if (ret)
- return ret;
+ pdata = lp8727_parse_dt(&cl->dev);
+ if (IS_ERR(pdata))
+ return PTR_ERR(pdata);
+ } else {
+ pdata = dev_get_platdata(&cl->dev);
}
pchg = devm_kzalloc(&cl->dev, sizeof(*pchg), GFP_KERNEL);
@@ -566,7 +567,7 @@ static int lp8727_probe(struct i2c_client *cl, const struct i2c_device_id *id)
pchg->client = cl;
pchg->dev = &cl->dev;
- pchg->pdata = cl->dev.platform_data;
+ pchg->pdata = pdata;
i2c_set_clientdata(cl, pchg);
mutex_init(&pchg->xfer_lock);
diff --git a/drivers/power/max17042_battery.c b/drivers/power/max17042_battery.c
index e89255764745..9c65f134d447 100644
--- a/drivers/power/max17042_battery.c
+++ b/drivers/power/max17042_battery.c
@@ -909,18 +909,21 @@ static int max17042_probe(struct i2c_client *client,
regmap_write(chip->regmap, MAX17042_LearnCFG, 0x0007);
}
- chip->battery = power_supply_register(&client->dev, max17042_desc,
- &psy_cfg);
+ chip->battery = devm_power_supply_register(&client->dev, max17042_desc,
+ &psy_cfg);
if (IS_ERR(chip->battery)) {
dev_err(&client->dev, "failed: power supply register\n");
return PTR_ERR(chip->battery);
}
if (client->irq) {
- ret = request_threaded_irq(client->irq, NULL,
- max17042_thread_handler,
- IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
- chip->battery->desc->name, chip);
+ ret = devm_request_threaded_irq(&client->dev, client->irq,
+ NULL,
+ max17042_thread_handler,
+ IRQF_TRIGGER_FALLING |
+ IRQF_ONESHOT,
+ chip->battery->desc->name,
+ chip);
if (!ret) {
regmap_update_bits(chip->regmap, MAX17042_CONFIG,
CONFIG_ALRT_BIT_ENBL,
@@ -944,16 +947,6 @@ static int max17042_probe(struct i2c_client *client,
return 0;
}
-static int max17042_remove(struct i2c_client *client)
-{
- struct max17042_chip *chip = i2c_get_clientdata(client);
-
- if (client->irq)
- free_irq(client->irq, chip);
- power_supply_unregister(chip->battery);
- return 0;
-}
-
#ifdef CONFIG_PM_SLEEP
static int max17042_suspend(struct device *dev)
{
@@ -1014,7 +1007,6 @@ static struct i2c_driver max17042_i2c_driver = {
.pm = &max17042_pm_ops,
},
.probe = max17042_probe,
- .remove = max17042_remove,
.id_table = max17042_id,
};
module_i2c_driver(max17042_i2c_driver);
diff --git a/drivers/power/max8903_charger.c b/drivers/power/max8903_charger.c
index bf2b4b3a7cae..6d39d52040d4 100644
--- a/drivers/power/max8903_charger.c
+++ b/drivers/power/max8903_charger.c
@@ -201,8 +201,7 @@ static int max8903_probe(struct platform_device *pdev)
if (pdata->dc_valid == false && pdata->usb_valid == false) {
dev_err(dev, "No valid power sources.\n");
- ret = -EINVAL;
- goto err;
+ return -EINVAL;
}
if (pdata->dc_valid) {
@@ -216,8 +215,7 @@ static int max8903_probe(struct platform_device *pdev)
} else {
dev_err(dev, "When DC is wired, DOK and DCM should"
" be wired as well.\n");
- ret = -EINVAL;
- goto err;
+ return -EINVAL;
}
} else {
if (pdata->dcm) {
@@ -225,8 +223,7 @@ static int max8903_probe(struct platform_device *pdev)
gpio_set_value(pdata->dcm, 0);
else {
dev_err(dev, "Invalid pin: dcm.\n");
- ret = -EINVAL;
- goto err;
+ return -EINVAL;
}
}
}
@@ -238,8 +235,7 @@ static int max8903_probe(struct platform_device *pdev)
} else {
dev_err(dev, "When USB is wired, UOK should be wired."
"as well.\n");
- ret = -EINVAL;
- goto err;
+ return -EINVAL;
}
}
@@ -248,32 +244,28 @@ static int max8903_probe(struct platform_device *pdev)
gpio_set_value(pdata->cen, (ta_in || usb_in) ? 0 : 1);
} else {
dev_err(dev, "Invalid pin: cen.\n");
- ret = -EINVAL;
- goto err;
+ return -EINVAL;
}
}
if (pdata->chg) {
if (!gpio_is_valid(pdata->chg)) {
dev_err(dev, "Invalid pin: chg.\n");
- ret = -EINVAL;
- goto err;
+ return -EINVAL;
}
}
if (pdata->flt) {
if (!gpio_is_valid(pdata->flt)) {
dev_err(dev, "Invalid pin: flt.\n");
- ret = -EINVAL;
- goto err;
+ return -EINVAL;
}
}
if (pdata->usus) {
if (!gpio_is_valid(pdata->usus)) {
dev_err(dev, "Invalid pin: usus.\n");
- ret = -EINVAL;
- goto err;
+ return -EINVAL;
}
}
@@ -291,85 +283,56 @@ static int max8903_probe(struct platform_device *pdev)
psy_cfg.drv_data = data;
- data->psy = power_supply_register(dev, &data->psy_desc, &psy_cfg);
+ data->psy = devm_power_supply_register(dev, &data->psy_desc, &psy_cfg);
if (IS_ERR(data->psy)) {
dev_err(dev, "failed: power supply register.\n");
- ret = PTR_ERR(data->psy);
- goto err;
+ return PTR_ERR(data->psy);
}
if (pdata->dc_valid) {
- ret = request_threaded_irq(gpio_to_irq(pdata->dok),
- NULL, max8903_dcin,
- IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING,
- "MAX8903 DC IN", data);
+ ret = devm_request_threaded_irq(dev, gpio_to_irq(pdata->dok),
+ NULL, max8903_dcin,
+ IRQF_TRIGGER_FALLING |
+ IRQF_TRIGGER_RISING,
+ "MAX8903 DC IN", data);
if (ret) {
dev_err(dev, "Cannot request irq %d for DC (%d)\n",
gpio_to_irq(pdata->dok), ret);
- goto err_psy;
+ return ret;
}
}
if (pdata->usb_valid) {
- ret = request_threaded_irq(gpio_to_irq(pdata->uok),
- NULL, max8903_usbin,
- IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING,
- "MAX8903 USB IN", data);
+ ret = devm_request_threaded_irq(dev, gpio_to_irq(pdata->uok),
+ NULL, max8903_usbin,
+ IRQF_TRIGGER_FALLING |
+ IRQF_TRIGGER_RISING,
+ "MAX8903 USB IN", data);
if (ret) {
dev_err(dev, "Cannot request irq %d for USB (%d)\n",
gpio_to_irq(pdata->uok), ret);
- goto err_dc_irq;
+ return ret;
}
}
if (pdata->flt) {
- ret = request_threaded_irq(gpio_to_irq(pdata->flt),
- NULL, max8903_fault,
- IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING,
- "MAX8903 Fault", data);
+ ret = devm_request_threaded_irq(dev, gpio_to_irq(pdata->flt),
+ NULL, max8903_fault,
+ IRQF_TRIGGER_FALLING |
+ IRQF_TRIGGER_RISING,
+ "MAX8903 Fault", data);
if (ret) {
dev_err(dev, "Cannot request irq %d for Fault (%d)\n",
gpio_to_irq(pdata->flt), ret);
- goto err_usb_irq;
+ return ret;
}
}
return 0;
-
-err_usb_irq:
- if (pdata->usb_valid)
- free_irq(gpio_to_irq(pdata->uok), data);
-err_dc_irq:
- if (pdata->dc_valid)
- free_irq(gpio_to_irq(pdata->dok), data);
-err_psy:
- power_supply_unregister(data->psy);
-err:
- return ret;
-}
-
-static int max8903_remove(struct platform_device *pdev)
-{
- struct max8903_data *data = platform_get_drvdata(pdev);
-
- if (data) {
- struct max8903_pdata *pdata = &data->pdata;
-
- if (pdata->flt)
- free_irq(gpio_to_irq(pdata->flt), data);
- if (pdata->usb_valid)
- free_irq(gpio_to_irq(pdata->uok), data);
- if (pdata->dc_valid)
- free_irq(gpio_to_irq(pdata->dok), data);
- power_supply_unregister(data->psy);
- }
-
- return 0;
}
static struct platform_driver max8903_driver = {
.probe = max8903_probe,
- .remove = max8903_remove,
.driver = {
.name = "max8903-charger",
},
diff --git a/drivers/power/max8998_charger.c b/drivers/power/max8998_charger.c
index 47448d4bc6cd..b64cf0f14142 100644
--- a/drivers/power/max8998_charger.c
+++ b/drivers/power/max8998_charger.c
@@ -117,8 +117,7 @@ static int max8998_battery_probe(struct platform_device *pdev)
"EOC value not set: leave it unchanged.\n");
} else {
dev_err(max8998->dev, "Invalid EOC value\n");
- ret = -EINVAL;
- goto err;
+ return -EINVAL;
}
/* Setup Charge Restart Level */
@@ -141,8 +140,7 @@ static int max8998_battery_probe(struct platform_device *pdev)
break;
default:
dev_err(max8998->dev, "Invalid Restart Level\n");
- ret = -EINVAL;
- goto err;
+ return -EINVAL;
}
/* Setup Charge Full Timeout */
@@ -165,34 +163,22 @@ static int max8998_battery_probe(struct platform_device *pdev)
break;
default:
dev_err(max8998->dev, "Invalid Full Timeout value\n");
- ret = -EINVAL;
- goto err;
+ return -EINVAL;
}
psy_cfg.drv_data = max8998;
- max8998->battery = power_supply_register(max8998->dev,
- &max8998_battery_desc,
- &psy_cfg);
+ max8998->battery = devm_power_supply_register(max8998->dev,
+ &max8998_battery_desc,
+ &psy_cfg);
if (IS_ERR(max8998->battery)) {
ret = PTR_ERR(max8998->battery);
dev_err(max8998->dev, "failed: power supply register: %d\n",
ret);
- goto err;
+ return ret;
}
return 0;
-err:
- return ret;
-}
-
-static int max8998_battery_remove(struct platform_device *pdev)
-{
- struct max8998_battery_data *max8998 = platform_get_drvdata(pdev);
-
- power_supply_unregister(max8998->battery);
-
- return 0;
}
static const struct platform_device_id max8998_battery_id[] = {
@@ -205,7 +191,6 @@ static struct platform_driver max8998_battery_driver = {
.name = "max8998-battery",
},
.probe = max8998_battery_probe,
- .remove = max8998_battery_remove,
.id_table = max8998_battery_id,
};
diff --git a/drivers/power/pm2301_charger.c b/drivers/power/pm2301_charger.c
index 3a45cc0c4dce..8f9bd1d0eeb6 100644
--- a/drivers/power/pm2301_charger.c
+++ b/drivers/power/pm2301_charger.c
@@ -1264,5 +1264,4 @@ module_exit(pm2xxx_charger_exit);
MODULE_LICENSE("GPL v2");
MODULE_AUTHOR("Rajkumar kasirajan, Olivier Launay");
-MODULE_ALIAS("i2c:pm2xxx-charger");
MODULE_DESCRIPTION("PM2xxx charger management driver");
diff --git a/drivers/power/qcom_smbb.c b/drivers/power/qcom_smbb.c
new file mode 100644
index 000000000000..5eb1e9e543e2
--- /dev/null
+++ b/drivers/power/qcom_smbb.c
@@ -0,0 +1,951 @@
+/* Copyright (c) 2014, Sony Mobile Communications Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * This driver is for the multi-block Switch-Mode Battery Charger and Boost
+ * (SMBB) hardware, found in Qualcomm PM8941 PMICs. The charger is an
+ * integrated, single-cell lithium-ion battery charger.
+ *
+ * Sub-components:
+ * - Charger core
+ * - Buck
+ * - DC charge-path
+ * - USB charge-path
+ * - Battery interface
+ * - Boost (not implemented)
+ * - Misc
+ * - HF-Buck
+ */
+
+#include <linux/errno.h>
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/power_supply.h>
+#include <linux/regmap.h>
+#include <linux/slab.h>
+
+#define SMBB_CHG_VMAX 0x040
+#define SMBB_CHG_VSAFE 0x041
+#define SMBB_CHG_CFG 0x043
+#define SMBB_CHG_IMAX 0x044
+#define SMBB_CHG_ISAFE 0x045
+#define SMBB_CHG_VIN_MIN 0x047
+#define SMBB_CHG_CTRL 0x049
+#define CTRL_EN BIT(7)
+#define SMBB_CHG_VBAT_WEAK 0x052
+#define SMBB_CHG_IBAT_TERM_CHG 0x05b
+#define IBAT_TERM_CHG_IEOC BIT(7)
+#define IBAT_TERM_CHG_IEOC_BMS BIT(7)
+#define IBAT_TERM_CHG_IEOC_CHG 0
+#define SMBB_CHG_VBAT_DET 0x05d
+#define SMBB_CHG_TCHG_MAX_EN 0x060
+#define TCHG_MAX_EN BIT(7)
+#define SMBB_CHG_WDOG_TIME 0x062
+#define SMBB_CHG_WDOG_EN 0x065
+#define WDOG_EN BIT(7)
+
+#define SMBB_BUCK_REG_MODE 0x174
+#define BUCK_REG_MODE BIT(0)
+#define BUCK_REG_MODE_VBAT BIT(0)
+#define BUCK_REG_MODE_VSYS 0
+
+#define SMBB_BAT_PRES_STATUS 0x208
+#define PRES_STATUS_BAT_PRES BIT(7)
+#define SMBB_BAT_TEMP_STATUS 0x209
+#define TEMP_STATUS_OK BIT(7)
+#define TEMP_STATUS_HOT BIT(6)
+#define SMBB_BAT_BTC_CTRL 0x249
+#define BTC_CTRL_COMP_EN BIT(7)
+#define BTC_CTRL_COLD_EXT BIT(1)
+#define BTC_CTRL_HOT_EXT_N BIT(0)
+
+#define SMBB_USB_IMAX 0x344
+#define SMBB_USB_ENUM_TIMER_STOP 0x34e
+#define ENUM_TIMER_STOP BIT(0)
+#define SMBB_USB_SEC_ACCESS 0x3d0
+#define SEC_ACCESS_MAGIC 0xa5
+#define SMBB_USB_REV_BST 0x3ed
+#define REV_BST_CHG_GONE BIT(7)
+
+#define SMBB_DC_IMAX 0x444
+
+#define SMBB_MISC_REV2 0x601
+#define SMBB_MISC_BOOT_DONE 0x642
+#define BOOT_DONE BIT(7)
+
+#define STATUS_USBIN_VALID BIT(0) /* USB connection is valid */
+#define STATUS_DCIN_VALID BIT(1) /* DC connection is valid */
+#define STATUS_BAT_HOT BIT(2) /* Battery temp 1=Hot, 0=Cold */
+#define STATUS_BAT_OK BIT(3) /* Battery temp OK */
+#define STATUS_BAT_PRESENT BIT(4) /* Battery is present */
+#define STATUS_CHG_DONE BIT(5) /* Charge cycle is complete */
+#define STATUS_CHG_TRKL BIT(6) /* Trickle charging */
+#define STATUS_CHG_FAST BIT(7) /* Fast charging */
+#define STATUS_CHG_GONE BIT(8) /* No charger is connected */
+
+enum smbb_attr {
+ ATTR_BAT_ISAFE,
+ ATTR_BAT_IMAX,
+ ATTR_USBIN_IMAX,
+ ATTR_DCIN_IMAX,
+ ATTR_BAT_VSAFE,
+ ATTR_BAT_VMAX,
+ ATTR_BAT_VMIN,
+ ATTR_CHG_VDET,
+ ATTR_VIN_MIN,
+ _ATTR_CNT,
+};
+
+struct smbb_charger {
+ unsigned int revision;
+ unsigned int addr;
+ struct device *dev;
+
+ bool dc_disabled;
+ bool jeita_ext_temp;
+ unsigned long status;
+ struct mutex statlock;
+
+ unsigned int attr[_ATTR_CNT];
+
+ struct power_supply *usb_psy;
+ struct power_supply *dc_psy;
+ struct power_supply *bat_psy;
+ struct regmap *regmap;
+};
+
+static int smbb_vbat_weak_fn(unsigned int index)
+{
+ return 2100000 + index * 100000;
+}
+
+static int smbb_vin_fn(unsigned int index)
+{
+ if (index > 42)
+ return 5600000 + (index - 43) * 200000;
+ return 3400000 + index * 50000;
+}
+
+static int smbb_vmax_fn(unsigned int index)
+{
+ return 3240000 + index * 10000;
+}
+
+static int smbb_vbat_det_fn(unsigned int index)
+{
+ return 3240000 + index * 20000;
+}
+
+static int smbb_imax_fn(unsigned int index)
+{
+ if (index < 2)
+ return 100000 + index * 50000;
+ return index * 100000;
+}
+
+static int smbb_bat_imax_fn(unsigned int index)
+{
+ return index * 50000;
+}
+
+static unsigned int smbb_hw_lookup(unsigned int val, int (*fn)(unsigned int))
+{
+ unsigned int widx;
+ unsigned int sel;
+
+ for (widx = sel = 0; (*fn)(widx) <= val; ++widx)
+ sel = widx;
+
+ return sel;
+}
+
+static const struct smbb_charger_attr {
+ const char *name;
+ unsigned int reg;
+ unsigned int safe_reg;
+ unsigned int max;
+ unsigned int min;
+ unsigned int fail_ok;
+ int (*hw_fn)(unsigned int);
+} smbb_charger_attrs[] = {
+ [ATTR_BAT_ISAFE] = {
+ .name = "qcom,fast-charge-safe-current",
+ .reg = SMBB_CHG_ISAFE,
+ .max = 3000000,
+ .min = 200000,
+ .hw_fn = smbb_bat_imax_fn,
+ .fail_ok = 1,
+ },
+ [ATTR_BAT_IMAX] = {
+ .name = "qcom,fast-charge-current-limit",
+ .reg = SMBB_CHG_IMAX,
+ .safe_reg = SMBB_CHG_ISAFE,
+ .max = 3000000,
+ .min = 200000,
+ .hw_fn = smbb_bat_imax_fn,
+ },
+ [ATTR_DCIN_IMAX] = {
+ .name = "qcom,dc-current-limit",
+ .reg = SMBB_DC_IMAX,
+ .max = 2500000,
+ .min = 100000,
+ .hw_fn = smbb_imax_fn,
+ },
+ [ATTR_BAT_VSAFE] = {
+ .name = "qcom,fast-charge-safe-voltage",
+ .reg = SMBB_CHG_VSAFE,
+ .max = 5000000,
+ .min = 3240000,
+ .hw_fn = smbb_vmax_fn,
+ .fail_ok = 1,
+ },
+ [ATTR_BAT_VMAX] = {
+ .name = "qcom,fast-charge-high-threshold-voltage",
+ .reg = SMBB_CHG_VMAX,
+ .safe_reg = SMBB_CHG_VSAFE,
+ .max = 5000000,
+ .min = 3240000,
+ .hw_fn = smbb_vmax_fn,
+ },
+ [ATTR_BAT_VMIN] = {
+ .name = "qcom,fast-charge-low-threshold-voltage",
+ .reg = SMBB_CHG_VBAT_WEAK,
+ .max = 3600000,
+ .min = 2100000,
+ .hw_fn = smbb_vbat_weak_fn,
+ },
+ [ATTR_CHG_VDET] = {
+ .name = "qcom,auto-recharge-threshold-voltage",
+ .reg = SMBB_CHG_VBAT_DET,
+ .max = 5000000,
+ .min = 3240000,
+ .hw_fn = smbb_vbat_det_fn,
+ },
+ [ATTR_VIN_MIN] = {
+ .name = "qcom,minimum-input-voltage",
+ .reg = SMBB_CHG_VIN_MIN,
+ .max = 9600000,
+ .min = 4200000,
+ .hw_fn = smbb_vin_fn,
+ },
+ [ATTR_USBIN_IMAX] = {
+ .name = "usb-charge-current-limit",
+ .reg = SMBB_USB_IMAX,
+ .max = 2500000,
+ .min = 100000,
+ .hw_fn = smbb_imax_fn,
+ },
+};
+
+static int smbb_charger_attr_write(struct smbb_charger *chg,
+ enum smbb_attr which, unsigned int val)
+{
+ const struct smbb_charger_attr *prop;
+ unsigned int wval;
+ unsigned int out;
+ int rc;
+
+ prop = &smbb_charger_attrs[which];
+
+ if (val > prop->max || val < prop->min) {
+ dev_err(chg->dev, "value out of range for %s [%u:%u]\n",
+ prop->name, prop->min, prop->max);
+ return -EINVAL;
+ }
+
+ if (prop->safe_reg) {
+ rc = regmap_read(chg->regmap,
+ chg->addr + prop->safe_reg, &wval);
+ if (rc) {
+ dev_err(chg->dev,
+ "unable to read safe value for '%s'\n",
+ prop->name);
+ return rc;
+ }
+
+ wval = prop->hw_fn(wval);
+
+ if (val > wval) {
+ dev_warn(chg->dev,
+ "%s above safe value, clamping at %u\n",
+ prop->name, wval);
+ val = wval;
+ }
+ }
+
+ wval = smbb_hw_lookup(val, prop->hw_fn);
+
+ rc = regmap_write(chg->regmap, chg->addr + prop->reg, wval);
+ if (rc) {
+ dev_err(chg->dev, "unable to update %s", prop->name);
+ return rc;
+ }
+ out = prop->hw_fn(wval);
+ if (out != val) {
+ dev_warn(chg->dev,
+ "%s inaccurate, rounded to %u\n",
+ prop->name, out);
+ }
+
+ dev_dbg(chg->dev, "%s <= %d\n", prop->name, out);
+
+ chg->attr[which] = out;
+
+ return 0;
+}
+
+static int smbb_charger_attr_read(struct smbb_charger *chg,
+ enum smbb_attr which)
+{
+ const struct smbb_charger_attr *prop;
+ unsigned int val;
+ int rc;
+
+ prop = &smbb_charger_attrs[which];
+
+ rc = regmap_read(chg->regmap, chg->addr + prop->reg, &val);
+ if (rc) {
+ dev_err(chg->dev, "failed to read %s\n", prop->name);
+ return rc;
+ }
+ val = prop->hw_fn(val);
+ dev_dbg(chg->dev, "%s => %d\n", prop->name, val);
+
+ chg->attr[which] = val;
+
+ return 0;
+}
+
+static int smbb_charger_attr_parse(struct smbb_charger *chg,
+ enum smbb_attr which)
+{
+ const struct smbb_charger_attr *prop;
+ unsigned int val;
+ int rc;
+
+ prop = &smbb_charger_attrs[which];
+
+ rc = of_property_read_u32(chg->dev->of_node, prop->name, &val);
+ if (rc == 0) {
+ rc = smbb_charger_attr_write(chg, which, val);
+ if (!rc || !prop->fail_ok)
+ return rc;
+ }
+ return smbb_charger_attr_read(chg, which);
+}
+
+static void smbb_set_line_flag(struct smbb_charger *chg, int irq, int flag)
+{
+ bool state;
+ int ret;
+
+ ret = irq_get_irqchip_state(irq, IRQCHIP_STATE_LINE_LEVEL, &state);
+ if (ret < 0) {
+ dev_err(chg->dev, "failed to read irq line\n");
+ return;
+ }
+
+ mutex_lock(&chg->statlock);
+ if (state)
+ chg->status |= flag;
+ else
+ chg->status &= ~flag;
+ mutex_unlock(&chg->statlock);
+
+ dev_dbg(chg->dev, "status = %03lx\n", chg->status);
+}
+
+static irqreturn_t smbb_usb_valid_handler(int irq, void *_data)
+{
+ struct smbb_charger *chg = _data;
+
+ smbb_set_line_flag(chg, irq, STATUS_USBIN_VALID);
+ power_supply_changed(chg->usb_psy);
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t smbb_dc_valid_handler(int irq, void *_data)
+{
+ struct smbb_charger *chg = _data;
+
+ smbb_set_line_flag(chg, irq, STATUS_DCIN_VALID);
+ if (!chg->dc_disabled)
+ power_supply_changed(chg->dc_psy);
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t smbb_bat_temp_handler(int irq, void *_data)
+{
+ struct smbb_charger *chg = _data;
+ unsigned int val;
+ int rc;
+
+ rc = regmap_read(chg->regmap, chg->addr + SMBB_BAT_TEMP_STATUS, &val);
+ if (rc)
+ return IRQ_HANDLED;
+
+ mutex_lock(&chg->statlock);
+ if (val & TEMP_STATUS_OK) {
+ chg->status |= STATUS_BAT_OK;
+ } else {
+ chg->status &= ~STATUS_BAT_OK;
+ if (val & TEMP_STATUS_HOT)
+ chg->status |= STATUS_BAT_HOT;
+ }
+ mutex_unlock(&chg->statlock);
+
+ power_supply_changed(chg->bat_psy);
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t smbb_bat_present_handler(int irq, void *_data)
+{
+ struct smbb_charger *chg = _data;
+
+ smbb_set_line_flag(chg, irq, STATUS_BAT_PRESENT);
+ power_supply_changed(chg->bat_psy);
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t smbb_chg_done_handler(int irq, void *_data)
+{
+ struct smbb_charger *chg = _data;
+
+ smbb_set_line_flag(chg, irq, STATUS_CHG_DONE);
+ power_supply_changed(chg->bat_psy);
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t smbb_chg_gone_handler(int irq, void *_data)
+{
+ struct smbb_charger *chg = _data;
+
+ smbb_set_line_flag(chg, irq, STATUS_CHG_GONE);
+ power_supply_changed(chg->bat_psy);
+ power_supply_changed(chg->usb_psy);
+ if (!chg->dc_disabled)
+ power_supply_changed(chg->dc_psy);
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t smbb_chg_fast_handler(int irq, void *_data)
+{
+ struct smbb_charger *chg = _data;
+
+ smbb_set_line_flag(chg, irq, STATUS_CHG_FAST);
+ power_supply_changed(chg->bat_psy);
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t smbb_chg_trkl_handler(int irq, void *_data)
+{
+ struct smbb_charger *chg = _data;
+
+ smbb_set_line_flag(chg, irq, STATUS_CHG_TRKL);
+ power_supply_changed(chg->bat_psy);
+
+ return IRQ_HANDLED;
+}
+
+static const struct smbb_irq {
+ const char *name;
+ irqreturn_t (*handler)(int, void *);
+} smbb_charger_irqs[] = {
+ { "chg-done", smbb_chg_done_handler },
+ { "chg-fast", smbb_chg_fast_handler },
+ { "chg-trkl", smbb_chg_trkl_handler },
+ { "bat-temp-ok", smbb_bat_temp_handler },
+ { "bat-present", smbb_bat_present_handler },
+ { "chg-gone", smbb_chg_gone_handler },
+ { "usb-valid", smbb_usb_valid_handler },
+ { "dc-valid", smbb_dc_valid_handler },
+};
+
+static int smbb_usbin_get_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ struct smbb_charger *chg = power_supply_get_drvdata(psy);
+ int rc = 0;
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_ONLINE:
+ mutex_lock(&chg->statlock);
+ val->intval = !(chg->status & STATUS_CHG_GONE) &&
+ (chg->status & STATUS_USBIN_VALID);
+ mutex_unlock(&chg->statlock);
+ break;
+ case POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT:
+ val->intval = chg->attr[ATTR_USBIN_IMAX];
+ break;
+ case POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT_MAX:
+ val->intval = 2500000;
+ break;
+ default:
+ rc = -EINVAL;
+ break;
+ }
+
+ return rc;
+}
+
+static int smbb_usbin_set_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ const union power_supply_propval *val)
+{
+ struct smbb_charger *chg = power_supply_get_drvdata(psy);
+ int rc;
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT:
+ rc = smbb_charger_attr_write(chg, ATTR_USBIN_IMAX,
+ val->intval);
+ break;
+ default:
+ rc = -EINVAL;
+ break;
+ }
+
+ return rc;
+}
+
+static int smbb_dcin_get_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ struct smbb_charger *chg = power_supply_get_drvdata(psy);
+ int rc = 0;
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_ONLINE:
+ mutex_lock(&chg->statlock);
+ val->intval = !(chg->status & STATUS_CHG_GONE) &&
+ (chg->status & STATUS_DCIN_VALID);
+ mutex_unlock(&chg->statlock);
+ break;
+ case POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT:
+ val->intval = chg->attr[ATTR_DCIN_IMAX];
+ break;
+ case POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT_MAX:
+ val->intval = 2500000;
+ break;
+ default:
+ rc = -EINVAL;
+ break;
+ }
+
+ return rc;
+}
+
+static int smbb_dcin_set_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ const union power_supply_propval *val)
+{
+ struct smbb_charger *chg = power_supply_get_drvdata(psy);
+ int rc;
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT:
+ rc = smbb_charger_attr_write(chg, ATTR_DCIN_IMAX,
+ val->intval);
+ break;
+ default:
+ rc = -EINVAL;
+ break;
+ }
+
+ return rc;
+}
+
+static int smbb_charger_writable_property(struct power_supply *psy,
+ enum power_supply_property psp)
+{
+ return psp == POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT;
+}
+
+static int smbb_battery_get_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ struct smbb_charger *chg = power_supply_get_drvdata(psy);
+ unsigned long status;
+ int rc = 0;
+
+ mutex_lock(&chg->statlock);
+ status = chg->status;
+ mutex_unlock(&chg->statlock);
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_STATUS:
+ if (status & STATUS_CHG_GONE)
+ val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
+ else if (!(status & (STATUS_DCIN_VALID | STATUS_USBIN_VALID)))
+ val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
+ else if (status & STATUS_CHG_DONE)
+ val->intval = POWER_SUPPLY_STATUS_FULL;
+ else if (!(status & STATUS_BAT_OK))
+ val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
+ else if (status & (STATUS_CHG_FAST | STATUS_CHG_TRKL))
+ val->intval = POWER_SUPPLY_STATUS_CHARGING;
+ else /* everything is ok for charging, but we are not... */
+ val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
+ break;
+ case POWER_SUPPLY_PROP_HEALTH:
+ if (status & STATUS_BAT_OK)
+ val->intval = POWER_SUPPLY_HEALTH_GOOD;
+ else if (status & STATUS_BAT_HOT)
+ val->intval = POWER_SUPPLY_HEALTH_OVERHEAT;
+ else
+ val->intval = POWER_SUPPLY_HEALTH_COLD;
+ break;
+ case POWER_SUPPLY_PROP_CHARGE_TYPE:
+ if (status & STATUS_CHG_FAST)
+ val->intval = POWER_SUPPLY_CHARGE_TYPE_FAST;
+ else if (status & STATUS_CHG_TRKL)
+ val->intval = POWER_SUPPLY_CHARGE_TYPE_TRICKLE;
+ else
+ val->intval = POWER_SUPPLY_CHARGE_TYPE_NONE;
+ break;
+ case POWER_SUPPLY_PROP_PRESENT:
+ val->intval = !!(status & STATUS_BAT_PRESENT);
+ break;
+ case POWER_SUPPLY_PROP_CURRENT_MAX:
+ val->intval = chg->attr[ATTR_BAT_IMAX];
+ break;
+ case POWER_SUPPLY_PROP_VOLTAGE_MAX:
+ val->intval = chg->attr[ATTR_BAT_VMAX];
+ break;
+ case POWER_SUPPLY_PROP_TECHNOLOGY:
+ /* this charger is a single-cell lithium-ion battery charger
+ * only. If you hook up some other technology, there will be
+ * fireworks.
+ */
+ val->intval = POWER_SUPPLY_TECHNOLOGY_LION;
+ break;
+ case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN:
+ val->intval = 3000000; /* single-cell li-ion low end */
+ break;
+ default:
+ rc = -EINVAL;
+ break;
+ }
+
+ return rc;
+}
+
+static int smbb_battery_set_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ const union power_supply_propval *val)
+{
+ struct smbb_charger *chg = power_supply_get_drvdata(psy);
+ int rc;
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_CURRENT_MAX:
+ rc = smbb_charger_attr_write(chg, ATTR_BAT_IMAX, val->intval);
+ break;
+ case POWER_SUPPLY_PROP_VOLTAGE_MAX:
+ rc = smbb_charger_attr_write(chg, ATTR_BAT_VMAX, val->intval);
+ break;
+ default:
+ rc = -EINVAL;
+ break;
+ }
+
+ return rc;
+}
+
+static int smbb_battery_writable_property(struct power_supply *psy,
+ enum power_supply_property psp)
+{
+ switch (psp) {
+ case POWER_SUPPLY_PROP_CURRENT_MAX:
+ case POWER_SUPPLY_PROP_VOLTAGE_MAX:
+ return 1;
+ default:
+ return 0;
+ }
+}
+
+static enum power_supply_property smbb_charger_properties[] = {
+ POWER_SUPPLY_PROP_ONLINE,
+ POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT,
+ POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT_MAX,
+};
+
+static enum power_supply_property smbb_battery_properties[] = {
+ POWER_SUPPLY_PROP_STATUS,
+ POWER_SUPPLY_PROP_HEALTH,
+ POWER_SUPPLY_PROP_PRESENT,
+ POWER_SUPPLY_PROP_CHARGE_TYPE,
+ POWER_SUPPLY_PROP_CURRENT_MAX,
+ POWER_SUPPLY_PROP_VOLTAGE_MAX,
+ POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN,
+ POWER_SUPPLY_PROP_TECHNOLOGY,
+};
+
+static const struct reg_off_mask_default {
+ unsigned int offset;
+ unsigned int mask;
+ unsigned int value;
+ unsigned int rev_mask;
+} smbb_charger_setup[] = {
+ /* The bootloader is supposed to set this... make sure anyway. */
+ { SMBB_MISC_BOOT_DONE, BOOT_DONE, BOOT_DONE },
+
+ /* Disable software timer */
+ { SMBB_CHG_TCHG_MAX_EN, TCHG_MAX_EN, 0 },
+
+ /* Clear and disable watchdog */
+ { SMBB_CHG_WDOG_TIME, 0xff, 160 },
+ { SMBB_CHG_WDOG_EN, WDOG_EN, 0 },
+
+ /* Use charger based EoC detection */
+ { SMBB_CHG_IBAT_TERM_CHG, IBAT_TERM_CHG_IEOC, IBAT_TERM_CHG_IEOC_CHG },
+
+ /* Disable GSM PA load adjustment.
+ * The PA signal is incorrectly connected on v2.
+ */
+ { SMBB_CHG_CFG, 0xff, 0x00, BIT(3) },
+
+ /* Use VBAT (not VSYS) to compensate for IR drop during fast charging */
+ { SMBB_BUCK_REG_MODE, BUCK_REG_MODE, BUCK_REG_MODE_VBAT },
+
+ /* Enable battery temperature comparators */
+ { SMBB_BAT_BTC_CTRL, BTC_CTRL_COMP_EN, BTC_CTRL_COMP_EN },
+
+ /* Stop USB enumeration timer */
+ { SMBB_USB_ENUM_TIMER_STOP, ENUM_TIMER_STOP, ENUM_TIMER_STOP },
+
+#if 0 /* FIXME supposedly only to disable hardware ARB termination */
+ { SMBB_USB_SEC_ACCESS, SEC_ACCESS_MAGIC },
+ { SMBB_USB_REV_BST, 0xff, REV_BST_CHG_GONE },
+#endif
+
+ /* Stop USB enumeration timer, again */
+ { SMBB_USB_ENUM_TIMER_STOP, ENUM_TIMER_STOP, ENUM_TIMER_STOP },
+
+ /* Enable charging */
+ { SMBB_CHG_CTRL, CTRL_EN, CTRL_EN },
+};
+
+static char *smbb_bif[] = { "smbb-bif" };
+
+static const struct power_supply_desc bat_psy_desc = {
+ .name = "smbb-bif",
+ .type = POWER_SUPPLY_TYPE_BATTERY,
+ .properties = smbb_battery_properties,
+ .num_properties = ARRAY_SIZE(smbb_battery_properties),
+ .get_property = smbb_battery_get_property,
+ .set_property = smbb_battery_set_property,
+ .property_is_writeable = smbb_battery_writable_property,
+};
+
+static const struct power_supply_desc usb_psy_desc = {
+ .name = "smbb-usbin",
+ .type = POWER_SUPPLY_TYPE_USB,
+ .properties = smbb_charger_properties,
+ .num_properties = ARRAY_SIZE(smbb_charger_properties),
+ .get_property = smbb_usbin_get_property,
+ .set_property = smbb_usbin_set_property,
+ .property_is_writeable = smbb_charger_writable_property,
+};
+
+static const struct power_supply_desc dc_psy_desc = {
+ .name = "smbb-dcin",
+ .type = POWER_SUPPLY_TYPE_MAINS,
+ .properties = smbb_charger_properties,
+ .num_properties = ARRAY_SIZE(smbb_charger_properties),
+ .get_property = smbb_dcin_get_property,
+ .set_property = smbb_dcin_set_property,
+ .property_is_writeable = smbb_charger_writable_property,
+};
+
+static int smbb_charger_probe(struct platform_device *pdev)
+{
+ struct power_supply_config bat_cfg = {};
+ struct power_supply_config usb_cfg = {};
+ struct power_supply_config dc_cfg = {};
+ struct smbb_charger *chg;
+ int rc, i;
+
+ chg = devm_kzalloc(&pdev->dev, sizeof(*chg), GFP_KERNEL);
+ if (!chg)
+ return -ENOMEM;
+
+ chg->dev = &pdev->dev;
+ mutex_init(&chg->statlock);
+
+ chg->regmap = dev_get_regmap(pdev->dev.parent, NULL);
+ if (!chg->regmap) {
+ dev_err(&pdev->dev, "failed to locate regmap\n");
+ return -ENODEV;
+ }
+
+ rc = of_property_read_u32(pdev->dev.of_node, "reg", &chg->addr);
+ if (rc) {
+ dev_err(&pdev->dev, "missing or invalid 'reg' property\n");
+ return rc;
+ }
+
+ rc = regmap_read(chg->regmap, chg->addr + SMBB_MISC_REV2, &chg->revision);
+ if (rc) {
+ dev_err(&pdev->dev, "unable to read revision\n");
+ return rc;
+ }
+
+ chg->revision += 1;
+ if (chg->revision != 2 && chg->revision != 3) {
+ dev_err(&pdev->dev, "v1 hardware not supported\n");
+ return -ENODEV;
+ }
+ dev_info(&pdev->dev, "Initializing SMBB rev %u", chg->revision);
+
+ chg->dc_disabled = of_property_read_bool(pdev->dev.of_node, "qcom,disable-dc");
+
+ for (i = 0; i < _ATTR_CNT; ++i) {
+ rc = smbb_charger_attr_parse(chg, i);
+ if (rc) {
+ dev_err(&pdev->dev, "failed to parse/apply settings\n");
+ return rc;
+ }
+ }
+
+ bat_cfg.drv_data = chg;
+ bat_cfg.of_node = pdev->dev.of_node;
+ chg->bat_psy = devm_power_supply_register(&pdev->dev,
+ &bat_psy_desc,
+ &bat_cfg);
+ if (IS_ERR(chg->bat_psy)) {
+ dev_err(&pdev->dev, "failed to register battery\n");
+ return PTR_ERR(chg->bat_psy);
+ }
+
+ usb_cfg.drv_data = chg;
+ usb_cfg.supplied_to = smbb_bif;
+ usb_cfg.num_supplicants = ARRAY_SIZE(smbb_bif);
+ chg->usb_psy = devm_power_supply_register(&pdev->dev,
+ &usb_psy_desc,
+ &usb_cfg);
+ if (IS_ERR(chg->usb_psy)) {
+ dev_err(&pdev->dev, "failed to register USB power supply\n");
+ return PTR_ERR(chg->usb_psy);
+ }
+
+ if (!chg->dc_disabled) {
+ dc_cfg.drv_data = chg;
+ dc_cfg.supplied_to = smbb_bif;
+ dc_cfg.num_supplicants = ARRAY_SIZE(smbb_bif);
+ chg->dc_psy = devm_power_supply_register(&pdev->dev,
+ &dc_psy_desc,
+ &dc_cfg);
+ if (IS_ERR(chg->dc_psy)) {
+ dev_err(&pdev->dev, "failed to register DC power supply\n");
+ return PTR_ERR(chg->dc_psy);
+ }
+ }
+
+ for (i = 0; i < ARRAY_SIZE(smbb_charger_irqs); ++i) {
+ int irq;
+
+ irq = platform_get_irq_byname(pdev, smbb_charger_irqs[i].name);
+ if (irq < 0) {
+ dev_err(&pdev->dev, "failed to get irq '%s'\n",
+ smbb_charger_irqs[i].name);
+ return irq;
+ }
+
+ smbb_charger_irqs[i].handler(irq, chg);
+
+ rc = devm_request_threaded_irq(&pdev->dev, irq, NULL,
+ smbb_charger_irqs[i].handler, IRQF_ONESHOT,
+ smbb_charger_irqs[i].name, chg);
+ if (rc) {
+ dev_err(&pdev->dev, "failed to request irq '%s'\n",
+ smbb_charger_irqs[i].name);
+ return rc;
+ }
+ }
+
+ chg->jeita_ext_temp = of_property_read_bool(pdev->dev.of_node,
+ "qcom,jeita-extended-temp-range");
+
+ /* Set temperature range to [35%:70%] or [25%:80%] accordingly */
+ rc = regmap_update_bits(chg->regmap, chg->addr + SMBB_BAT_BTC_CTRL,
+ BTC_CTRL_COLD_EXT | BTC_CTRL_HOT_EXT_N,
+ chg->jeita_ext_temp ?
+ BTC_CTRL_COLD_EXT :
+ BTC_CTRL_HOT_EXT_N);
+ if (rc) {
+ dev_err(&pdev->dev,
+ "unable to set %s temperature range\n",
+ chg->jeita_ext_temp ? "JEITA extended" : "normal");
+ return rc;
+ }
+
+ for (i = 0; i < ARRAY_SIZE(smbb_charger_setup); ++i) {
+ const struct reg_off_mask_default *r = &smbb_charger_setup[i];
+
+ if (r->rev_mask & BIT(chg->revision))
+ continue;
+
+ rc = regmap_update_bits(chg->regmap, chg->addr + r->offset,
+ r->mask, r->value);
+ if (rc) {
+ dev_err(&pdev->dev,
+ "unable to initializing charging, bailing\n");
+ return rc;
+ }
+ }
+
+ platform_set_drvdata(pdev, chg);
+
+ return 0;
+}
+
+static int smbb_charger_remove(struct platform_device *pdev)
+{
+ struct smbb_charger *chg;
+
+ chg = platform_get_drvdata(pdev);
+
+ regmap_update_bits(chg->regmap, chg->addr + SMBB_CHG_CTRL, CTRL_EN, 0);
+
+ return 0;
+}
+
+static const struct of_device_id smbb_charger_id_table[] = {
+ { .compatible = "qcom,pm8941-charger" },
+ { }
+};
+MODULE_DEVICE_TABLE(of, smbb_charger_id_table);
+
+static struct platform_driver smbb_charger_driver = {
+ .probe = smbb_charger_probe,
+ .remove = smbb_charger_remove,
+ .driver = {
+ .name = "qcom-smbb",
+ .of_match_table = smbb_charger_id_table,
+ },
+};
+module_platform_driver(smbb_charger_driver);
+
+MODULE_DESCRIPTION("Qualcomm Switch-Mode Battery Charger and Boost driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/power/reset/Kconfig b/drivers/power/reset/Kconfig
index 5a0189bf19bb..1131cf75acc6 100644
--- a/drivers/power/reset/Kconfig
+++ b/drivers/power/reset/Kconfig
@@ -15,7 +15,7 @@ config POWER_RESET_AS3722
This driver supports turning off board via a ams AS3722 power-off.
config POWER_RESET_AT91_POWEROFF
- bool "Atmel AT91 poweroff driver"
+ tristate "Atmel AT91 poweroff driver"
depends on ARCH_AT91
default SOC_AT91SAM9 || SOC_SAMA5
help
@@ -23,7 +23,7 @@ config POWER_RESET_AT91_POWEROFF
SoCs
config POWER_RESET_AT91_RESET
- bool "Atmel AT91 reset driver"
+ tristate "Atmel AT91 reset driver"
depends on ARCH_AT91
default SOC_AT91SAM9 || SOC_SAMA5
help
diff --git a/drivers/power/reset/at91-poweroff.c b/drivers/power/reset/at91-poweroff.c
index 9847cfb7e23d..e9e24df35f26 100644
--- a/drivers/power/reset/at91-poweroff.c
+++ b/drivers/power/reset/at91-poweroff.c
@@ -10,6 +10,7 @@
* warranty of any kind, whether express or implied.
*/
+#include <linux/clk.h>
#include <linux/io.h>
#include <linux/module.h>
#include <linux/of.h>
@@ -48,6 +49,7 @@ static const char *shdwc_wakeup_modes[] = {
};
static void __iomem *at91_shdwc_base;
+static struct clk *sclk;
static void __init at91_wakeup_status(void)
{
@@ -119,9 +121,10 @@ static void at91_poweroff_dt_set_wakeup_mode(struct platform_device *pdev)
writel(wakeup_mode | mode, at91_shdwc_base + AT91_SHDW_MR);
}
-static int at91_poweroff_probe(struct platform_device *pdev)
+static int __init at91_poweroff_probe(struct platform_device *pdev)
{
struct resource *res;
+ int ret;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
at91_shdwc_base = devm_ioremap_resource(&pdev->dev, res);
@@ -130,6 +133,16 @@ static int at91_poweroff_probe(struct platform_device *pdev)
return PTR_ERR(at91_shdwc_base);
}
+ sclk = devm_clk_get(&pdev->dev, NULL);
+ if (IS_ERR(sclk))
+ return PTR_ERR(sclk);
+
+ ret = clk_prepare_enable(sclk);
+ if (ret) {
+ dev_err(&pdev->dev, "Could not enable slow clock\n");
+ return ret;
+ }
+
at91_wakeup_status();
if (pdev->dev.of_node)
@@ -140,6 +153,16 @@ static int at91_poweroff_probe(struct platform_device *pdev)
return 0;
}
+static int __exit at91_poweroff_remove(struct platform_device *pdev)
+{
+ if (pm_power_off == at91_poweroff)
+ pm_power_off = NULL;
+
+ clk_disable_unprepare(sclk);
+
+ return 0;
+}
+
static const struct of_device_id at91_poweroff_of_match[] = {
{ .compatible = "atmel,at91sam9260-shdwc", },
{ .compatible = "atmel,at91sam9rl-shdwc", },
@@ -148,10 +171,14 @@ static const struct of_device_id at91_poweroff_of_match[] = {
};
static struct platform_driver at91_poweroff_driver = {
- .probe = at91_poweroff_probe,
+ .remove = __exit_p(at91_poweroff_remove),
.driver = {
.name = "at91-poweroff",
.of_match_table = at91_poweroff_of_match,
},
};
-module_platform_driver(at91_poweroff_driver);
+module_platform_driver_probe(at91_poweroff_driver, at91_poweroff_probe);
+
+MODULE_AUTHOR("Atmel Corporation");
+MODULE_DESCRIPTION("Shutdown driver for Atmel SoCs");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/power/reset/at91-reset.c b/drivers/power/reset/at91-reset.c
index c378d4ec826f..3f6b5dd7c3d4 100644
--- a/drivers/power/reset/at91-reset.c
+++ b/drivers/power/reset/at91-reset.c
@@ -1,5 +1,5 @@
/*
- * Atmel AT91 SAM9 SoCs reset code
+ * Atmel AT91 SAM9 & SAMA5 SoCs reset code
*
* Copyright (C) 2007 Atmel Corporation.
* Copyright (C) BitBox Ltd 2010
@@ -11,6 +11,7 @@
* warranty of any kind, whether express or implied.
*/
+#include <linux/clk.h>
#include <linux/io.h>
#include <linux/module.h>
#include <linux/of_address.h>
@@ -46,6 +47,7 @@ enum reset_type {
};
static void __iomem *at91_ramc_base[2], *at91_rstc_base;
+static struct clk *sclk;
/*
* unless the SDRAM is cleanly shutdown before we hit the
@@ -178,11 +180,11 @@ static struct notifier_block at91_restart_nb = {
.priority = 192,
};
-static int at91_reset_of_probe(struct platform_device *pdev)
+static int __init at91_reset_probe(struct platform_device *pdev)
{
const struct of_device_id *match;
struct device_node *np;
- int idx = 0;
+ int ret, idx = 0;
at91_rstc_base = of_iomap(pdev->dev.of_node, 0);
if (!at91_rstc_base) {
@@ -204,53 +206,32 @@ static int at91_reset_of_probe(struct platform_device *pdev)
match = of_match_node(at91_reset_of_match, pdev->dev.of_node);
at91_restart_nb.notifier_call = match->data;
- return register_restart_handler(&at91_restart_nb);
-}
-static int at91_reset_platform_probe(struct platform_device *pdev)
-{
- const struct platform_device_id *match;
- struct resource *res;
- int idx = 0;
+ sclk = devm_clk_get(&pdev->dev, NULL);
+ if (IS_ERR(sclk))
+ return PTR_ERR(sclk);
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- at91_rstc_base = devm_ioremap_resource(&pdev->dev, res);
- if (IS_ERR(at91_rstc_base)) {
- dev_err(&pdev->dev, "Could not map reset controller address\n");
- return PTR_ERR(at91_rstc_base);
+ ret = clk_prepare_enable(sclk);
+ if (ret) {
+ dev_err(&pdev->dev, "Could not enable slow clock\n");
+ return ret;
}
- for (idx = 0; idx < 2; idx++) {
- res = platform_get_resource(pdev, IORESOURCE_MEM, idx + 1 );
- at91_ramc_base[idx] = devm_ioremap(&pdev->dev, res->start,
- resource_size(res));
- if (!at91_ramc_base[idx]) {
- dev_err(&pdev->dev, "Could not map ram controller address\n");
- return -ENOMEM;
- }
+ ret = register_restart_handler(&at91_restart_nb);
+ if (ret) {
+ clk_disable_unprepare(sclk);
+ return ret;
}
- match = platform_get_device_id(pdev);
- at91_restart_nb.notifier_call =
- (int (*)(struct notifier_block *,
- unsigned long, void *)) match->driver_data;
+ at91_reset_status(pdev);
- return register_restart_handler(&at91_restart_nb);
+ return 0;
}
-static int at91_reset_probe(struct platform_device *pdev)
+static int __exit at91_reset_remove(struct platform_device *pdev)
{
- int ret;
-
- if (pdev->dev.of_node)
- ret = at91_reset_of_probe(pdev);
- else
- ret = at91_reset_platform_probe(pdev);
-
- if (ret)
- return ret;
-
- at91_reset_status(pdev);
+ unregister_restart_handler(&at91_restart_nb);
+ clk_disable_unprepare(sclk);
return 0;
}
@@ -262,11 +243,15 @@ static const struct platform_device_id at91_reset_plat_match[] = {
};
static struct platform_driver at91_reset_driver = {
- .probe = at91_reset_probe,
+ .remove = __exit_p(at91_reset_remove),
.driver = {
.name = "at91-reset",
.of_match_table = at91_reset_of_match,
},
.id_table = at91_reset_plat_match,
};
-module_platform_driver(at91_reset_driver);
+module_platform_driver_probe(at91_reset_driver, at91_reset_probe);
+
+MODULE_AUTHOR("Atmel Corporation");
+MODULE_DESCRIPTION("Reset driver for Atmel SoCs");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/power/rt9455_charger.c b/drivers/power/rt9455_charger.c
index a49a9d44bdda..cfdbde9daf94 100644
--- a/drivers/power/rt9455_charger.c
+++ b/drivers/power/rt9455_charger.c
@@ -1760,5 +1760,4 @@ module_i2c_driver(rt9455_driver);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Anda-Maria Nicolae <anda-maria.nicolae@intel.com>");
-MODULE_ALIAS("i2c:rt9455-charger");
MODULE_DESCRIPTION("Richtek RT9455 Charger Driver");
diff --git a/drivers/power/smb347-charger.c b/drivers/power/smb347-charger.c
index 0b60a0b5878b..072c5189bd6d 100644
--- a/drivers/power/smb347-charger.c
+++ b/drivers/power/smb347-charger.c
@@ -1332,4 +1332,3 @@ MODULE_AUTHOR("Bruce E. Robertson <bruce.e.robertson@intel.com>");
MODULE_AUTHOR("Mika Westerberg <mika.westerberg@linux.intel.com>");
MODULE_DESCRIPTION("SMB347 battery charger driver");
MODULE_LICENSE("GPL");
-MODULE_ALIAS("i2c:smb347");
diff --git a/drivers/power/tps65090-charger.c b/drivers/power/tps65090-charger.c
index 7e8fbd29c30e..1b4b5e09538e 100644
--- a/drivers/power/tps65090-charger.c
+++ b/drivers/power/tps65090-charger.c
@@ -353,6 +353,7 @@ static const struct of_device_id of_tps65090_charger_match[] = {
{ .compatible = "ti,tps65090-charger", },
{ /* end */ }
};
+MODULE_DEVICE_TABLE(of, of_tps65090_charger_match);
static struct platform_driver tps65090_charger_driver = {
.driver = {
diff --git a/drivers/power/tps65217_charger.c b/drivers/power/tps65217_charger.c
new file mode 100644
index 000000000000..d9f56730c735
--- /dev/null
+++ b/drivers/power/tps65217_charger.c
@@ -0,0 +1,264 @@
+/*
+ * Battery charger driver for TI's tps65217
+ *
+ * Copyright (c) 2015, Collabora Ltd.
+
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * Battery charger driver for TI's tps65217
+ */
+#include <linux/kernel.h>
+#include <linux/kthread.h>
+#include <linux/device.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/slab.h>
+#include <linux/err.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/power_supply.h>
+
+#include <linux/mfd/core.h>
+#include <linux/mfd/tps65217.h>
+
+#define POLL_INTERVAL (HZ * 2)
+
+struct tps65217_charger {
+ struct tps65217 *tps;
+ struct device *dev;
+ struct power_supply *ac;
+
+ int ac_online;
+ int prev_ac_online;
+
+ struct task_struct *poll_task;
+};
+
+static enum power_supply_property tps65217_ac_props[] = {
+ POWER_SUPPLY_PROP_ONLINE,
+};
+
+static int tps65217_config_charger(struct tps65217_charger *charger)
+{
+ int ret;
+
+ dev_dbg(charger->dev, "%s\n", __func__);
+
+ /*
+ * tps65217 rev. G, p. 31 (see p. 32 for NTC schematic)
+ *
+ * The device can be configured to support a 100k NTC (B = 3960) by
+ * setting the the NTC_TYPE bit in register CHGCONFIG1 to 1. However it
+ * is not recommended to do so. In sleep mode, the charger continues
+ * charging the battery, but all register values are reset to default
+ * values. Therefore, the charger would get the wrong temperature
+ * information. If 100k NTC setting is required, please contact the
+ * factory.
+ *
+ * ATTENTION, conflicting information, from p. 46
+ *
+ * NTC TYPE (for battery temperature measurement)
+ * 0 – 100k (curve 1, B = 3960)
+ * 1 – 10k (curve 2, B = 3480) (default on reset)
+ *
+ */
+ ret = tps65217_clear_bits(charger->tps, TPS65217_REG_CHGCONFIG1,
+ TPS65217_CHGCONFIG1_NTC_TYPE,
+ TPS65217_PROTECT_NONE);
+ if (ret) {
+ dev_err(charger->dev,
+ "failed to set 100k NTC setting: %d\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int tps65217_enable_charging(struct tps65217_charger *charger)
+{
+ int ret;
+
+ /* charger already enabled */
+ if (charger->ac_online)
+ return 0;
+
+ dev_dbg(charger->dev, "%s: enable charging\n", __func__);
+ ret = tps65217_set_bits(charger->tps, TPS65217_REG_CHGCONFIG1,
+ TPS65217_CHGCONFIG1_CHG_EN,
+ TPS65217_CHGCONFIG1_CHG_EN,
+ TPS65217_PROTECT_NONE);
+ if (ret) {
+ dev_err(charger->dev,
+ "%s: Error in writing CHG_EN in reg 0x%x: %d\n",
+ __func__, TPS65217_REG_CHGCONFIG1, ret);
+ return ret;
+ }
+
+ charger->ac_online = 1;
+
+ return 0;
+}
+
+static int tps65217_ac_get_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ struct tps65217_charger *charger = power_supply_get_drvdata(psy);
+
+ if (psp == POWER_SUPPLY_PROP_ONLINE) {
+ val->intval = charger->ac_online;
+ return 0;
+ }
+ return -EINVAL;
+}
+
+static irqreturn_t tps65217_charger_irq(int irq, void *dev)
+{
+ int ret, val;
+ struct tps65217_charger *charger = dev;
+
+ charger->prev_ac_online = charger->ac_online;
+
+ ret = tps65217_reg_read(charger->tps, TPS65217_REG_STATUS, &val);
+ if (ret < 0) {
+ dev_err(charger->dev, "%s: Error in reading reg 0x%x\n",
+ __func__, TPS65217_REG_STATUS);
+ return IRQ_HANDLED;
+ }
+
+ dev_dbg(charger->dev, "%s: 0x%x\n", __func__, val);
+
+ /* check for AC status bit */
+ if (val & TPS65217_STATUS_ACPWR) {
+ ret = tps65217_enable_charging(charger);
+ if (ret) {
+ dev_err(charger->dev,
+ "failed to enable charger: %d\n", ret);
+ return IRQ_HANDLED;
+ }
+ } else {
+ charger->ac_online = 0;
+ }
+
+ if (charger->prev_ac_online != charger->ac_online)
+ power_supply_changed(charger->ac);
+
+ ret = tps65217_reg_read(charger->tps, TPS65217_REG_CHGCONFIG0, &val);
+ if (ret < 0) {
+ dev_err(charger->dev, "%s: Error in reading reg 0x%x\n",
+ __func__, TPS65217_REG_CHGCONFIG0);
+ return IRQ_HANDLED;
+ }
+
+ if (val & TPS65217_CHGCONFIG0_ACTIVE)
+ dev_dbg(charger->dev, "%s: charger is charging\n", __func__);
+ else
+ dev_dbg(charger->dev,
+ "%s: charger is NOT charging\n", __func__);
+
+ return IRQ_HANDLED;
+}
+
+static int tps65217_charger_poll_task(void *data)
+{
+ set_freezable();
+
+ while (!kthread_should_stop()) {
+ schedule_timeout_interruptible(POLL_INTERVAL);
+ try_to_freeze();
+ tps65217_charger_irq(-1, data);
+ }
+ return 0;
+}
+
+static const struct power_supply_desc tps65217_charger_desc = {
+ .name = "tps65217-ac",
+ .type = POWER_SUPPLY_TYPE_MAINS,
+ .get_property = tps65217_ac_get_property,
+ .properties = tps65217_ac_props,
+ .num_properties = ARRAY_SIZE(tps65217_ac_props),
+};
+
+static int tps65217_charger_probe(struct platform_device *pdev)
+{
+ struct tps65217 *tps = dev_get_drvdata(pdev->dev.parent);
+ struct tps65217_charger *charger;
+ int ret;
+
+ dev_dbg(&pdev->dev, "%s\n", __func__);
+
+ charger = devm_kzalloc(&pdev->dev, sizeof(*charger), GFP_KERNEL);
+ if (!charger)
+ return -ENOMEM;
+
+ charger->tps = tps;
+ charger->dev = &pdev->dev;
+
+ charger->ac = devm_power_supply_register(&pdev->dev,
+ &tps65217_charger_desc,
+ NULL);
+ if (IS_ERR(charger->ac)) {
+ dev_err(&pdev->dev, "failed: power supply register\n");
+ return PTR_ERR(charger->ac);
+ }
+
+ ret = tps65217_config_charger(charger);
+ if (ret < 0) {
+ dev_err(charger->dev, "charger config failed, err %d\n", ret);
+ return ret;
+ }
+
+ charger->poll_task = kthread_run(tps65217_charger_poll_task,
+ charger, "ktps65217charger");
+ if (IS_ERR(charger->poll_task)) {
+ ret = PTR_ERR(charger->poll_task);
+ dev_err(charger->dev, "Unable to run kthread err %d\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int tps65217_charger_remove(struct platform_device *pdev)
+{
+ struct tps65217_charger *charger = platform_get_drvdata(pdev);
+
+ kthread_stop(charger->poll_task);
+
+ return 0;
+}
+
+static const struct of_device_id tps65217_charger_match_table[] = {
+ { .compatible = "ti,tps65217-charger", },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, tps65217_charger_match_table);
+
+static struct platform_driver tps65217_charger_driver = {
+ .probe = tps65217_charger_probe,
+ .remove = tps65217_charger_remove,
+ .driver = {
+ .name = "tps65217-charger",
+ .of_match_table = of_match_ptr(tps65217_charger_match_table),
+ },
+
+};
+module_platform_driver(tps65217_charger_driver);
+
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR("Enric Balletbo Serra <enric.balletbo@collabora.com>");
+MODULE_DESCRIPTION("TPS65217 battery charger driver");
diff --git a/drivers/power/twl4030_charger.c b/drivers/power/twl4030_charger.c
index 74f2d3ff1d7c..bcd4dc304f27 100644
--- a/drivers/power/twl4030_charger.c
+++ b/drivers/power/twl4030_charger.c
@@ -22,7 +22,7 @@
#include <linux/power_supply.h>
#include <linux/notifier.h>
#include <linux/usb/otg.h>
-#include <linux/i2c/twl4030-madc.h>
+#include <linux/iio/consumer.h>
#define TWL4030_BCIMDEN 0x00
#define TWL4030_BCIMDKEY 0x01
@@ -91,21 +91,23 @@
#define TWL4030_MSTATEC_COMPLETE1 0x0b
#define TWL4030_MSTATEC_COMPLETE4 0x0e
-#if IS_REACHABLE(CONFIG_TWL4030_MADC)
/*
* If AC (Accessory Charger) voltage exceeds 4.5V (MADC 11)
* then AC is available.
*/
-static inline int ac_available(void)
+static inline int ac_available(struct iio_channel *channel_vac)
{
- return twl4030_get_madc_conversion(11) > 4500;
-}
-#else
-static inline int ac_available(void)
-{
- return 0;
+ int val, err;
+
+ if (!channel_vac)
+ return 0;
+
+ err = iio_read_channel_processed(channel_vac, &val);
+ if (err < 0)
+ return 0;
+ return val > 4500;
}
-#endif
+
static bool allow_usb;
module_param(allow_usb, bool, 0644);
MODULE_PARM_DESC(allow_usb, "Allow USB charge drawing default current");
@@ -128,6 +130,7 @@ struct twl4030_bci {
*/
unsigned int ichg_eoc, ichg_lo, ichg_hi;
unsigned int usb_cur, ac_cur;
+ struct iio_channel *channel_vac;
bool ac_is_active;
int usb_mode, ac_mode; /* charging mode requested */
#define CHARGE_OFF 0
@@ -278,7 +281,7 @@ static int twl4030_charger_update_current(struct twl4030_bci *bci)
* If AC (Accessory Charger) voltage exceeds 4.5V (MADC 11)
* and AC is enabled, set current for 'ac'
*/
- if (ac_available()) {
+ if (ac_available(bci->channel_vac)) {
cur = bci->ac_cur;
bci->ac_is_active = true;
} else {
@@ -1048,6 +1051,12 @@ static int twl4030_bci_probe(struct platform_device *pdev)
return ret;
}
+ bci->channel_vac = iio_channel_get(&pdev->dev, "vac");
+ if (IS_ERR(bci->channel_vac)) {
+ bci->channel_vac = NULL;
+ dev_warn(&pdev->dev, "could not request vac iio channel");
+ }
+
INIT_WORK(&bci->work, twl4030_bci_usb_work);
INIT_DELAYED_WORK(&bci->current_worker, twl4030_current_worker);
@@ -1069,7 +1078,7 @@ static int twl4030_bci_probe(struct platform_device *pdev)
TWL4030_INTERRUPTS_BCIIMR1A);
if (ret < 0) {
dev_err(&pdev->dev, "failed to unmask interrupts: %d\n", ret);
- return ret;
+ goto fail;
}
reg = ~(u32)(TWL4030_VBATOV | TWL4030_VBUSOV | TWL4030_ACCHGOV);
@@ -1102,6 +1111,10 @@ static int twl4030_bci_probe(struct platform_device *pdev)
twl4030_charger_enable_backup(0, 0);
return 0;
+fail:
+ iio_channel_release(bci->channel_vac);
+
+ return ret;
}
static int __exit twl4030_bci_remove(struct platform_device *pdev)
@@ -1112,6 +1125,8 @@ static int __exit twl4030_bci_remove(struct platform_device *pdev)
twl4030_charger_enable_usb(bci, false);
twl4030_charger_enable_backup(0, 0);
+ iio_channel_release(bci->channel_vac);
+
device_remove_file(&bci->usb->dev, &dev_attr_max_current);
device_remove_file(&bci->usb->dev, &dev_attr_mode);
device_remove_file(&bci->ac->dev, &dev_attr_max_current);
diff --git a/drivers/power/wm831x_power.c b/drivers/power/wm831x_power.c
index db11ae6599f3..7082301da945 100644
--- a/drivers/power/wm831x_power.c
+++ b/drivers/power/wm831x_power.c
@@ -499,7 +499,8 @@ static int wm831x_power_probe(struct platform_device *pdev)
struct wm831x_power *power;
int ret, irq, i;
- power = kzalloc(sizeof(struct wm831x_power), GFP_KERNEL);
+ power = devm_kzalloc(&pdev->dev, sizeof(struct wm831x_power),
+ GFP_KERNEL);
if (power == NULL)
return -ENOMEM;
@@ -536,7 +537,7 @@ static int wm831x_power_probe(struct platform_device *pdev)
NULL);
if (IS_ERR(power->wall)) {
ret = PTR_ERR(power->wall);
- goto err_kmalloc;
+ goto err;
}
power->usb_desc.name = power->usb_name,
@@ -572,7 +573,7 @@ static int wm831x_power_probe(struct platform_device *pdev)
irq = wm831x_irq(wm831x, platform_get_irq_byname(pdev, "SYSLO"));
ret = request_threaded_irq(irq, NULL, wm831x_syslo_irq,
- IRQF_TRIGGER_RISING, "System power low",
+ IRQF_TRIGGER_RISING | IRQF_ONESHOT, "System power low",
power);
if (ret != 0) {
dev_err(&pdev->dev, "Failed to request SYSLO IRQ %d: %d\n",
@@ -582,7 +583,7 @@ static int wm831x_power_probe(struct platform_device *pdev)
irq = wm831x_irq(wm831x, platform_get_irq_byname(pdev, "PWR SRC"));
ret = request_threaded_irq(irq, NULL, wm831x_pwr_src_irq,
- IRQF_TRIGGER_RISING, "Power source",
+ IRQF_TRIGGER_RISING | IRQF_ONESHOT, "Power source",
power);
if (ret != 0) {
dev_err(&pdev->dev, "Failed to request PWR SRC IRQ %d: %d\n",
@@ -595,7 +596,7 @@ static int wm831x_power_probe(struct platform_device *pdev)
platform_get_irq_byname(pdev,
wm831x_bat_irqs[i]));
ret = request_threaded_irq(irq, NULL, wm831x_bat_irq,
- IRQF_TRIGGER_RISING,
+ IRQF_TRIGGER_RISING | IRQF_ONESHOT,
wm831x_bat_irqs[i],
power);
if (ret != 0) {
@@ -626,8 +627,7 @@ err_usb:
power_supply_unregister(power->usb);
err_wall:
power_supply_unregister(power->wall);
-err_kmalloc:
- kfree(power);
+err:
return ret;
}
@@ -654,7 +654,6 @@ static int wm831x_power_remove(struct platform_device *pdev)
power_supply_unregister(wm831x_power->battery);
power_supply_unregister(wm831x_power->wall);
power_supply_unregister(wm831x_power->usb);
- kfree(wm831x_power);
return 0;
}
diff --git a/drivers/w1/slaves/w1_bq27000.c b/drivers/w1/slaves/w1_bq27000.c
index caafb1722783..9f4a86b754ba 100644
--- a/drivers/w1/slaves/w1_bq27000.c
+++ b/drivers/w1/slaves/w1_bq27000.c
@@ -15,7 +15,7 @@
#include <linux/types.h>
#include <linux/platform_device.h>
#include <linux/mutex.h>
-#include <linux/power/bq27x00_battery.h>
+#include <linux/power/bq27xxx_battery.h>
#include "../w1.h"
#include "../w1_int.h"
@@ -39,9 +39,10 @@ static int w1_bq27000_read(struct device *dev, unsigned int reg)
return val;
}
-static struct bq27000_platform_data bq27000_battery_info = {
+static struct bq27xxx_platform_data bq27000_battery_info = {
.read = w1_bq27000_read,
.name = "bq27000-battery",
+ .chip = BQ27000,
};
static int w1_bq27000_add_slave(struct w1_slave *sl)
diff --git a/include/linux/mfd/axp20x.h b/include/linux/mfd/axp20x.h
index cc8ad1e1a307..b24c771cebd5 100644
--- a/include/linux/mfd/axp20x.h
+++ b/include/linux/mfd/axp20x.h
@@ -11,6 +11,8 @@
#ifndef __LINUX_MFD_AXP20X_H
#define __LINUX_MFD_AXP20X_H
+#include <linux/regmap.h>
+
enum {
AXP152_ID = 0,
AXP202_ID,
@@ -438,4 +440,26 @@ struct axp288_extcon_pdata {
struct gpio_desc *gpio_mux_cntl;
};
+/* generic helper function for reading 9-16 bit wide regs */
+static inline int axp20x_read_variable_width(struct regmap *regmap,
+ unsigned int reg, unsigned int width)
+{
+ unsigned int reg_val, result;
+ int err;
+
+ err = regmap_read(regmap, reg, &reg_val);
+ if (err)
+ return err;
+
+ result = reg_val << (width - 8);
+
+ err = regmap_read(regmap, reg + 1, &reg_val);
+ if (err)
+ return err;
+
+ result |= reg_val;
+
+ return result;
+}
+
#endif /* __LINUX_MFD_AXP20X_H */
diff --git a/include/linux/power/bq27x00_battery.h b/include/linux/power/bq27x00_battery.h
deleted file mode 100644
index a857f719bf40..000000000000
--- a/include/linux/power/bq27x00_battery.h
+++ /dev/null
@@ -1,19 +0,0 @@
-#ifndef __LINUX_BQ27X00_BATTERY_H__
-#define __LINUX_BQ27X00_BATTERY_H__
-
-/**
- * struct bq27000_plaform_data - Platform data for bq27000 devices
- * @name: Name of the battery. If NULL the driver will fallback to "bq27000".
- * @read: HDQ read callback.
- * This function should provide access to the HDQ bus the battery is
- * connected to.
- * The first parameter is a pointer to the battery device, the second the
- * register to be read. The return value should either be the content of
- * the passed register or an error value.
- */
-struct bq27000_platform_data {
- const char *name;
- int (*read)(struct device *dev, unsigned int);
-};
-
-#endif
diff --git a/include/linux/power/bq27xxx_battery.h b/include/linux/power/bq27xxx_battery.h
new file mode 100644
index 000000000000..45f6a7b5b3cb
--- /dev/null
+++ b/include/linux/power/bq27xxx_battery.h
@@ -0,0 +1,31 @@
+#ifndef __LINUX_BQ27X00_BATTERY_H__
+#define __LINUX_BQ27X00_BATTERY_H__
+
+/**
+ * struct bq27xxx_plaform_data - Platform data for bq27xxx devices
+ * @name: Name of the battery.
+ * @chip: Chip class number of this device.
+ * @read: HDQ read callback.
+ * This function should provide access to the HDQ bus the battery is
+ * connected to.
+ * The first parameter is a pointer to the battery device, the second the
+ * register to be read. The return value should either be the content of
+ * the passed register or an error value.
+ */
+enum bq27xxx_chip {
+ BQ27000 = 1, /* bq27000, bq27200 */
+ BQ27010, /* bq27010, bq27210 */
+ BQ27500, /* bq27500, bq27510, bq27520 */
+ BQ27530, /* bq27530, bq27531 */
+ BQ27541, /* bq27541, bq27542, bq27546, bq27742 */
+ BQ27545, /* bq27545 */
+ BQ27421, /* bq27421, bq27425, bq27441, bq27621 */
+};
+
+struct bq27xxx_platform_data {
+ const char *name;
+ enum bq27xxx_chip chip;
+ int (*read)(struct device *dev, unsigned int);
+};
+
+#endif
diff --git a/include/linux/power/charger-manager.h b/include/linux/power/charger-manager.h
index eadf28cb2fc9..c4fa907c8f14 100644
--- a/include/linux/power/charger-manager.h
+++ b/include/linux/power/charger-manager.h
@@ -65,7 +65,7 @@ struct charger_cable {
const char *extcon_name;
const char *name;
- /* The charger-manager use Exton framework*/
+ /* The charger-manager use Extcon framework */
struct extcon_specific_cable_nb extcon_dev;
struct work_struct wq;
struct notifier_block nb;
@@ -94,7 +94,7 @@ struct charger_cable {
* the charger will be maintained with disabled state.
* @cables:
* the array of charger cables to enable/disable charger
- * and set current limit according to constratint data of
+ * and set current limit according to constraint data of
* struct charger_cable if only charger cable included
* in the array of charger cables is attached/detached.
* @num_cables: the number of charger cables.
@@ -148,7 +148,7 @@ struct charger_regulator {
* @polling_interval_ms: interval in millisecond at which
* charger manager will monitor battery health
* @battery_present:
- * Specify where information for existance of battery can be obtained
+ * Specify where information for existence of battery can be obtained
* @psy_charger_stat: the names of power-supply for chargers
* @num_charger_regulator: the number of entries in charger_regulators
* @charger_regulators: array of charger regulators
@@ -156,7 +156,7 @@ struct charger_regulator {
* @thermal_zone : the name of thermal zone for battery
* @temp_min : Minimum battery temperature for charging.
* @temp_max : Maximum battery temperature for charging.
- * @temp_diff : Temperature diffential to restart charging.
+ * @temp_diff : Temperature difference to restart charging.
* @measure_battery_temp:
* true: measure battery temperature
* false: measure ambient temperature