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Immutable branch between MFD, Power, Charger and Regulator for v3.18
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This commit is contained in:
Sebastian Reichel
commit
fd642bb94c
@ -18,3 +18,17 @@ Description:
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This file is writeable and can be used to set the assumed
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battery 'full level'. As batteries age, this value has to be
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amended over time.
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What: /sys/class/power_supply/max14577-charger/device/fast_charge_timer
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Date: July 2014
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KernelVersion: 3.18.0
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Contact: Krzysztof Kozlowski <k.kozlowski@samsung.com>
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Description:
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This entry shows and sets the maximum time the max14577
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charger operates in fast-charge mode. When the timer expires
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the device will terminate fast-charge mode (charging current
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will drop to 0 A) and will trigger interrupt.
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Valid values:
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- 5, 6 or 7 (hours),
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- 0: disabled.
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146
Documentation/devicetree/bindings/mfd/max14577.txt
Normal file
146
Documentation/devicetree/bindings/mfd/max14577.txt
Normal file
@ -0,0 +1,146 @@
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Maxim MAX14577/77836 Multi-Function Device
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MAX14577 is a Multi-Function Device with Micro-USB Interface Circuit, Li+
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Battery Charger and SFOUT LDO output for powering USB devices. It is
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interfaced to host controller using I2C.
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MAX77836 additionally contains PMIC (with two LDO regulators) and Fuel Gauge.
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Required properties:
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- compatible : Must be "maxim,max14577" or "maxim,max77836".
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- reg : I2C slave address for the max14577 chip (0x25 for max14577/max77836)
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- interrupts : IRQ line for the chip.
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- interrupt-parent : The parent interrupt controller.
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Required nodes:
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- charger :
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Node for configuring the charger driver.
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Required properties:
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- compatible : "maxim,max14577-charger"
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or "maxim,max77836-charger"
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- maxim,fast-charge-uamp : Current in uA for Fast Charge;
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Valid values:
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- for max14577: 90000 - 950000;
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- for max77836: 45000 - 475000;
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- maxim,eoc-uamp : Current in uA for End-Of-Charge mode;
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Valid values:
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- for max14577: 50000 - 200000;
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- for max77836: 5000 - 100000;
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- maxim,ovp-uvolt : OverVoltage Protection Threshold in uV;
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In an overvoltage condition, INT asserts and charging
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stops. Valid values:
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- 6000000, 6500000, 7000000, 7500000;
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- maxim,constant-uvolt : Battery Constant Voltage in uV;
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Valid values:
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- 4000000 - 4280000 (step by 20000);
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- 4350000;
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Optional nodes:
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- max14577-muic/max77836-muic :
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Node used only by extcon consumers.
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Required properties:
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- compatible : "maxim,max14577-muic" or "maxim,max77836-muic"
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- regulators :
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Required properties:
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- compatible : "maxim,max14577-regulator"
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or "maxim,max77836-regulator"
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May contain a sub-node per regulator from the list below. Each
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sub-node should contain the constraints and initialization information
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for that regulator. See regulator.txt for a description of standard
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properties for these sub-nodes.
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List of valid regulator names:
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- for max14577: CHARGER, SAFEOUT.
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- for max77836: CHARGER, SAFEOUT, LDO1, LDO2.
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The SAFEOUT is a fixed voltage regulator so there is no need to specify
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voltages for it.
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Example:
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#include <dt-bindings/interrupt-controller/irq.h>
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max14577@25 {
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compatible = "maxim,max14577";
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reg = <0x25>;
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interrupt-parent = <&gpx1>;
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interrupts = <5 IRQ_TYPE_NONE>;
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muic: max14577-muic {
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compatible = "maxim,max14577-muic";
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};
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regulators {
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compatible = "maxim,max14577-regulator";
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SAFEOUT {
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regulator-name = "SAFEOUT";
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};
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CHARGER {
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regulator-name = "CHARGER";
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regulator-min-microamp = <90000>;
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regulator-max-microamp = <950000>;
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regulator-boot-on;
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};
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};
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charger {
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compatible = "maxim,max14577-charger";
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maxim,constant-uvolt = <4350000>;
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maxim,fast-charge-uamp = <450000>;
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maxim,eoc-uamp = <50000>;
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maxim,ovp-uvolt = <6500000>;
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};
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};
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max77836@25 {
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compatible = "maxim,max77836";
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reg = <0x25>;
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interrupt-parent = <&gpx1>;
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interrupts = <5 IRQ_TYPE_NONE>;
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muic: max77836-muic {
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compatible = "maxim,max77836-muic";
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};
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regulators {
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compatible = "maxim,max77836-regulator";
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SAFEOUT {
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regulator-name = "SAFEOUT";
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};
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CHARGER {
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regulator-name = "CHARGER";
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regulator-min-microamp = <90000>;
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regulator-max-microamp = <950000>;
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regulator-boot-on;
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};
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LDO1 {
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regulator-name = "LDO1";
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regulator-min-microvolt = <2700000>;
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regulator-max-microvolt = <2700000>;
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};
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LDO2 {
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regulator-name = "LDO2";
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regulator-min-microvolt = <800000>;
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regulator-max-microvolt = <3950000>;
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};
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};
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charger {
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compatible = "maxim,max77836-charger";
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maxim,constant-uvolt = <4350000>;
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maxim,fast-charge-uamp = <225000>;
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maxim,eoc-uamp = <7500>;
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maxim,ovp-uvolt = <6500000>;
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};
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};
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@ -26,6 +26,87 @@
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#include <linux/mfd/max14577.h>
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#include <linux/mfd/max14577-private.h>
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/*
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* Table of valid charger currents for different Maxim chipsets.
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* It is placed here because it is used by both charger and regulator driver.
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*/
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const struct maxim_charger_current maxim_charger_currents[] = {
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[MAXIM_DEVICE_TYPE_UNKNOWN] = { 0, 0, 0, 0 },
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[MAXIM_DEVICE_TYPE_MAX14577] = {
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.min = MAX14577_CHARGER_CURRENT_LIMIT_MIN,
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.high_start = MAX14577_CHARGER_CURRENT_LIMIT_HIGH_START,
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.high_step = MAX14577_CHARGER_CURRENT_LIMIT_HIGH_STEP,
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.max = MAX14577_CHARGER_CURRENT_LIMIT_MAX,
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},
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[MAXIM_DEVICE_TYPE_MAX77836] = {
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.min = MAX77836_CHARGER_CURRENT_LIMIT_MIN,
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.high_start = MAX77836_CHARGER_CURRENT_LIMIT_HIGH_START,
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.high_step = MAX77836_CHARGER_CURRENT_LIMIT_HIGH_STEP,
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.max = MAX77836_CHARGER_CURRENT_LIMIT_MAX,
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},
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};
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EXPORT_SYMBOL_GPL(maxim_charger_currents);
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/*
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* maxim_charger_calc_reg_current - Calculate register value for current
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* @limits: constraints for charger, matching the MBCICHWRC register
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* @min_ua: minimal requested current, micro Amps
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* @max_ua: maximum requested current, micro Amps
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* @dst: destination to store calculated register value
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*
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* Calculates the value of MBCICHWRC (Fast Battery Charge Current) register
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* for given current and stores it under pointed 'dst'. The stored value
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* combines low bit (MBCICHWRCL) and high bits (MBCICHWRCH). It is also
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* properly shifted.
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*
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* The calculated register value matches the current which:
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* - is always between <limits.min, limits.max>;
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* - is always less or equal to max_ua;
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* - is the highest possible value;
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* - may be lower than min_ua.
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*
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* On success returns 0. On error returns -EINVAL (requested min/max current
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* is outside of given charger limits) and 'dst' is not set.
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*/
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int maxim_charger_calc_reg_current(const struct maxim_charger_current *limits,
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unsigned int min_ua, unsigned int max_ua, u8 *dst)
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{
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unsigned int current_bits = 0xf;
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if (min_ua > max_ua)
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return -EINVAL;
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if (min_ua > limits->max || max_ua < limits->min)
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return -EINVAL;
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if (max_ua < limits->high_start) {
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/*
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* Less than high_start, so set the minimal current
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* (turn Low Bit off, 0 as high bits).
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*/
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*dst = 0x0;
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return 0;
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}
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/* max_ua is in range: <high_start, infinite>, cut it to limits.max */
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max_ua = min(limits->max, max_ua);
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max_ua -= limits->high_start;
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/*
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* There is no risk of overflow 'max_ua' here because:
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* - max_ua >= limits.high_start
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* - BUILD_BUG checks that 'limits' are: max >= high_start + high_step
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*/
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current_bits = max_ua / limits->high_step;
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/* Turn Low Bit on (use range <limits.high_start, limits.max>) ... */
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*dst = 0x1 << CHGCTRL4_MBCICHWRCL_SHIFT;
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/* and set proper High Bits */
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*dst |= current_bits << CHGCTRL4_MBCICHWRCH_SHIFT;
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return 0;
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}
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EXPORT_SYMBOL_GPL(maxim_charger_calc_reg_current);
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static const struct mfd_cell max14577_devs[] = {
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{
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.name = "max14577-muic",
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@ -35,7 +116,10 @@ static const struct mfd_cell max14577_devs[] = {
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.name = "max14577-regulator",
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.of_compatible = "maxim,max14577-regulator",
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},
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{ .name = "max14577-charger", },
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{
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.name = "max14577-charger",
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.of_compatible = "maxim,max14577-charger",
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},
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};
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static const struct mfd_cell max77836_devs[] = {
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@ -463,6 +547,20 @@ static int __init max14577_i2c_init(void)
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BUILD_BUG_ON(ARRAY_SIZE(max14577_i2c_id) != MAXIM_DEVICE_TYPE_NUM);
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BUILD_BUG_ON(ARRAY_SIZE(max14577_dt_match) != MAXIM_DEVICE_TYPE_NUM);
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/* Valid charger current values must be provided for each chipset */
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BUILD_BUG_ON(ARRAY_SIZE(maxim_charger_currents) != MAXIM_DEVICE_TYPE_NUM);
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/* Check for valid values for charger */
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BUILD_BUG_ON(MAX14577_CHARGER_CURRENT_LIMIT_HIGH_START +
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MAX14577_CHARGER_CURRENT_LIMIT_HIGH_STEP * 0xf !=
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MAX14577_CHARGER_CURRENT_LIMIT_MAX);
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BUILD_BUG_ON(MAX14577_CHARGER_CURRENT_LIMIT_HIGH_STEP == 0);
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BUILD_BUG_ON(MAX77836_CHARGER_CURRENT_LIMIT_HIGH_START +
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MAX77836_CHARGER_CURRENT_LIMIT_HIGH_STEP * 0xf !=
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MAX77836_CHARGER_CURRENT_LIMIT_MAX);
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BUILD_BUG_ON(MAX77836_CHARGER_CURRENT_LIMIT_HIGH_STEP == 0);
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return i2c_add_driver(&max14577_i2c_driver);
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}
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subsys_initcall(max14577_i2c_init);
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@ -325,11 +325,12 @@ config CHARGER_MANAGER
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with help of suspend_again support.
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config CHARGER_MAX14577
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tristate "Maxim MAX14577 MUIC battery charger driver"
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tristate "Maxim MAX14577/77836 battery charger driver"
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depends on MFD_MAX14577
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select SYSFS
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help
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Say Y to enable support for the battery charger control sysfs and
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platform data of MAX14577 MUICs.
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platform data of MAX14577/77836 MUICs.
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config CHARGER_MAX8997
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tristate "Maxim MAX8997/MAX8966 PMIC battery charger driver"
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@ -1,7 +1,7 @@
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/*
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* Battery charger driver for the Maxim 14577
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* max14577_charger.c - Battery charger driver for the Maxim 14577/77836
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*
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* Copyright (C) 2013 Samsung Electronics
|
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* Copyright (C) 2013,2014 Samsung Electronics
|
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* Krzysztof Kozlowski <k.kozlowski@samsung.com>
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*
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* This program is free software; you can redistribute it and/or modify
|
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@ -19,16 +19,44 @@
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#include <linux/platform_device.h>
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#include <linux/power_supply.h>
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#include <linux/mfd/max14577-private.h>
|
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#include <linux/mfd/max14577.h>
|
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|
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struct max14577_charger {
|
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struct device *dev;
|
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struct max14577 *max14577;
|
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struct power_supply charger;
|
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|
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unsigned int charging_state;
|
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unsigned int battery_state;
|
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unsigned int charging_state;
|
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unsigned int battery_state;
|
||||
|
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struct max14577_charger_platform_data *pdata;
|
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};
|
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|
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/*
|
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* Helper function for mapping values of STATUS2/CHGTYP register on max14577
|
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* and max77836 chipsets to enum maxim_muic_charger_type.
|
||||
*/
|
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static enum max14577_muic_charger_type maxim_get_charger_type(
|
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enum maxim_device_type dev_type, u8 val) {
|
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switch (val) {
|
||||
case MAX14577_CHARGER_TYPE_NONE:
|
||||
case MAX14577_CHARGER_TYPE_USB:
|
||||
case MAX14577_CHARGER_TYPE_DOWNSTREAM_PORT:
|
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case MAX14577_CHARGER_TYPE_DEDICATED_CHG:
|
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case MAX14577_CHARGER_TYPE_SPECIAL_500MA:
|
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case MAX14577_CHARGER_TYPE_SPECIAL_1A:
|
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return val;
|
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case MAX14577_CHARGER_TYPE_DEAD_BATTERY:
|
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case MAX14577_CHARGER_TYPE_RESERVED:
|
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if (dev_type == MAXIM_DEVICE_TYPE_MAX77836)
|
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val |= 0x8;
|
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return val;
|
||||
default:
|
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WARN_ONCE(1, "max14577: Unsupported chgtyp register value 0x%02x", val);
|
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return val;
|
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}
|
||||
}
|
||||
|
||||
static int max14577_get_charger_state(struct max14577_charger *chg)
|
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{
|
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struct regmap *rmap = chg->max14577->regmap;
|
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@ -89,19 +117,23 @@ static int max14577_get_online(struct max14577_charger *chg)
|
||||
{
|
||||
struct regmap *rmap = chg->max14577->regmap;
|
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u8 reg_data;
|
||||
enum max14577_muic_charger_type chg_type;
|
||||
|
||||
max14577_read_reg(rmap, MAX14577_MUIC_REG_STATUS2, ®_data);
|
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reg_data = ((reg_data & STATUS2_CHGTYP_MASK) >> STATUS2_CHGTYP_SHIFT);
|
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switch (reg_data) {
|
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chg_type = maxim_get_charger_type(chg->max14577->dev_type, reg_data);
|
||||
switch (chg_type) {
|
||||
case MAX14577_CHARGER_TYPE_USB:
|
||||
case MAX14577_CHARGER_TYPE_DEDICATED_CHG:
|
||||
case MAX14577_CHARGER_TYPE_SPECIAL_500MA:
|
||||
case MAX14577_CHARGER_TYPE_SPECIAL_1A:
|
||||
case MAX14577_CHARGER_TYPE_DEAD_BATTERY:
|
||||
case MAX77836_CHARGER_TYPE_SPECIAL_BIAS:
|
||||
return 1;
|
||||
case MAX14577_CHARGER_TYPE_NONE:
|
||||
case MAX14577_CHARGER_TYPE_DOWNSTREAM_PORT:
|
||||
case MAX14577_CHARGER_TYPE_RESERVED:
|
||||
case MAX77836_CHARGER_TYPE_RESERVED:
|
||||
default:
|
||||
return 0;
|
||||
}
|
||||
@ -118,10 +150,12 @@ static int max14577_get_battery_health(struct max14577_charger *chg)
|
||||
struct regmap *rmap = chg->max14577->regmap;
|
||||
int state = POWER_SUPPLY_HEALTH_GOOD;
|
||||
u8 reg_data;
|
||||
enum max14577_muic_charger_type chg_type;
|
||||
|
||||
max14577_read_reg(rmap, MAX14577_MUIC_REG_STATUS2, ®_data);
|
||||
reg_data = ((reg_data & STATUS2_CHGTYP_MASK) >> STATUS2_CHGTYP_SHIFT);
|
||||
if (reg_data == MAX14577_CHARGER_TYPE_DEAD_BATTERY) {
|
||||
chg_type = maxim_get_charger_type(chg->max14577->dev_type, reg_data);
|
||||
if (chg_type == MAX14577_CHARGER_TYPE_DEAD_BATTERY) {
|
||||
state = POWER_SUPPLY_HEALTH_DEAD;
|
||||
goto state_set;
|
||||
}
|
||||
@ -147,15 +181,131 @@ static int max14577_get_present(struct max14577_charger *chg)
|
||||
return 1;
|
||||
}
|
||||
|
||||
static int max14577_set_fast_charge_timer(struct max14577_charger *chg,
|
||||
unsigned long hours)
|
||||
{
|
||||
u8 reg_data;
|
||||
|
||||
switch (hours) {
|
||||
case 5 ... 7:
|
||||
reg_data = hours - 3;
|
||||
break;
|
||||
case 0:
|
||||
/* Disable */
|
||||
reg_data = 0x7;
|
||||
break;
|
||||
default:
|
||||
dev_err(chg->dev, "Wrong value for Fast-Charge Timer: %lu\n",
|
||||
hours);
|
||||
return -EINVAL;
|
||||
}
|
||||
reg_data <<= CHGCTRL1_TCHW_SHIFT;
|
||||
|
||||
return max14577_update_reg(chg->max14577->regmap,
|
||||
MAX14577_REG_CHGCTRL1, CHGCTRL1_TCHW_MASK, reg_data);
|
||||
}
|
||||
|
||||
static int max14577_init_constant_voltage(struct max14577_charger *chg,
|
||||
unsigned int uvolt)
|
||||
{
|
||||
u8 reg_data;
|
||||
|
||||
if (uvolt < MAXIM_CHARGER_CONSTANT_VOLTAGE_MIN ||
|
||||
uvolt > MAXIM_CHARGER_CONSTANT_VOLTAGE_MAX)
|
||||
return -EINVAL;
|
||||
|
||||
if (uvolt == 4200000)
|
||||
reg_data = 0x0;
|
||||
else if (uvolt == MAXIM_CHARGER_CONSTANT_VOLTAGE_MAX)
|
||||
reg_data = 0x1f;
|
||||
else if (uvolt <= 4280000) {
|
||||
unsigned int val = uvolt;
|
||||
|
||||
val -= MAXIM_CHARGER_CONSTANT_VOLTAGE_MIN;
|
||||
val /= MAXIM_CHARGER_CONSTANT_VOLTAGE_STEP;
|
||||
if (uvolt <= 4180000)
|
||||
reg_data = 0x1 + val;
|
||||
else
|
||||
reg_data = val; /* Fix for gap between 4.18V and 4.22V */
|
||||
} else
|
||||
return -EINVAL;
|
||||
|
||||
reg_data <<= CHGCTRL3_MBCCVWRC_SHIFT;
|
||||
|
||||
return max14577_write_reg(chg->max14577->regmap,
|
||||
MAX14577_CHG_REG_CHG_CTRL3, reg_data);
|
||||
}
|
||||
|
||||
static int max14577_init_eoc(struct max14577_charger *chg,
|
||||
unsigned int uamp)
|
||||
{
|
||||
unsigned int current_bits = 0xf;
|
||||
u8 reg_data;
|
||||
|
||||
switch (chg->max14577->dev_type) {
|
||||
case MAXIM_DEVICE_TYPE_MAX77836:
|
||||
if (uamp < 5000)
|
||||
return -EINVAL; /* Requested current is too low */
|
||||
|
||||
if (uamp >= 7500 && uamp < 10000)
|
||||
current_bits = 0x0;
|
||||
else if (uamp <= 50000) {
|
||||
/* <5000, 7499> and <10000, 50000> */
|
||||
current_bits = uamp / 5000;
|
||||
} else {
|
||||
uamp = min(uamp, 100000U) - 50000U;
|
||||
current_bits = 0xa + uamp / 10000;
|
||||
}
|
||||
break;
|
||||
|
||||
case MAXIM_DEVICE_TYPE_MAX14577:
|
||||
default:
|
||||
if (uamp < MAX14577_CHARGER_EOC_CURRENT_LIMIT_MIN)
|
||||
return -EINVAL; /* Requested current is too low */
|
||||
|
||||
uamp = min(uamp, MAX14577_CHARGER_EOC_CURRENT_LIMIT_MAX);
|
||||
uamp -= MAX14577_CHARGER_EOC_CURRENT_LIMIT_MIN;
|
||||
current_bits = uamp / MAX14577_CHARGER_EOC_CURRENT_LIMIT_STEP;
|
||||
break;
|
||||
}
|
||||
|
||||
reg_data = current_bits << CHGCTRL5_EOCS_SHIFT;
|
||||
|
||||
return max14577_update_reg(chg->max14577->regmap,
|
||||
MAX14577_CHG_REG_CHG_CTRL5, CHGCTRL5_EOCS_MASK,
|
||||
reg_data);
|
||||
}
|
||||
|
||||
static int max14577_init_fast_charge(struct max14577_charger *chg,
|
||||
unsigned int uamp)
|
||||
{
|
||||
u8 reg_data;
|
||||
int ret;
|
||||
const struct maxim_charger_current *limits =
|
||||
&maxim_charger_currents[chg->max14577->dev_type];
|
||||
|
||||
ret = maxim_charger_calc_reg_current(limits, uamp, uamp, ®_data);
|
||||
if (ret) {
|
||||
dev_err(chg->dev, "Wrong value for fast charge: %u\n", uamp);
|
||||
return ret;
|
||||
}
|
||||
|
||||
return max14577_update_reg(chg->max14577->regmap,
|
||||
MAX14577_CHG_REG_CHG_CTRL4,
|
||||
CHGCTRL4_MBCICHWRCL_MASK | CHGCTRL4_MBCICHWRCH_MASK,
|
||||
reg_data);
|
||||
}
|
||||
|
||||
/*
|
||||
* Sets charger registers to proper and safe default values.
|
||||
* Some of these values are equal to defaults in MAX14577E
|
||||
* data sheet but there are minor differences.
|
||||
*/
|
||||
static void max14577_charger_reg_init(struct max14577_charger *chg)
|
||||
static int max14577_charger_reg_init(struct max14577_charger *chg)
|
||||
{
|
||||
struct regmap *rmap = chg->max14577->regmap;
|
||||
u8 reg_data;
|
||||
int ret;
|
||||
|
||||
/*
|
||||
* Charger-Type Manual Detection, default off (set CHGTYPMAN to 0)
|
||||
@ -167,10 +317,6 @@ static void max14577_charger_reg_init(struct max14577_charger *chg)
|
||||
CDETCTRL1_CHGDETEN_MASK | CDETCTRL1_CHGTYPMAN_MASK,
|
||||
reg_data);
|
||||
|
||||
/* Battery Fast-Charge Timer, from SM-V700: 6hrs */
|
||||
reg_data = 0x3 << CHGCTRL1_TCHW_SHIFT;
|
||||
max14577_write_reg(rmap, MAX14577_REG_CHGCTRL1, reg_data);
|
||||
|
||||
/*
|
||||
* Wall-Adapter Rapid Charge, default on
|
||||
* Battery-Charger, default on
|
||||
@ -179,29 +325,46 @@ static void max14577_charger_reg_init(struct max14577_charger *chg)
|
||||
reg_data |= 0x1 << CHGCTRL2_MBCHOSTEN_SHIFT;
|
||||
max14577_write_reg(rmap, MAX14577_REG_CHGCTRL2, reg_data);
|
||||
|
||||
/* Battery-Charger Constant Voltage (CV) Mode, from SM-V700: 4.35V */
|
||||
reg_data = 0xf << CHGCTRL3_MBCCVWRC_SHIFT;
|
||||
max14577_write_reg(rmap, MAX14577_REG_CHGCTRL3, reg_data);
|
||||
|
||||
/*
|
||||
* Fast Battery-Charge Current Low, default 200-950mA
|
||||
* Fast Battery-Charge Current High, from SM-V700: 450mA
|
||||
*/
|
||||
reg_data = 0x1 << CHGCTRL4_MBCICHWRCL_SHIFT;
|
||||
reg_data |= 0x5 << CHGCTRL4_MBCICHWRCH_SHIFT;
|
||||
max14577_write_reg(rmap, MAX14577_REG_CHGCTRL4, reg_data);
|
||||
|
||||
/* End-of-Charge Current, from SM-V700: 50mA */
|
||||
reg_data = 0x0 << CHGCTRL5_EOCS_SHIFT;
|
||||
max14577_write_reg(rmap, MAX14577_REG_CHGCTRL5, reg_data);
|
||||
|
||||
/* Auto Charging Stop, default off */
|
||||
reg_data = 0x0 << CHGCTRL6_AUTOSTOP_SHIFT;
|
||||
max14577_write_reg(rmap, MAX14577_REG_CHGCTRL6, reg_data);
|
||||
|
||||
/* Overvoltage-Protection Threshold, from SM-V700: 6.5V */
|
||||
reg_data = 0x2 << CHGCTRL7_OTPCGHCVS_SHIFT;
|
||||
ret = max14577_init_constant_voltage(chg, chg->pdata->constant_uvolt);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
ret = max14577_init_eoc(chg, chg->pdata->eoc_uamp);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
ret = max14577_init_fast_charge(chg, chg->pdata->fast_charge_uamp);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
ret = max14577_set_fast_charge_timer(chg,
|
||||
MAXIM_CHARGER_FAST_CHARGE_TIMER_DEFAULT);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
/* Initialize Overvoltage-Protection Threshold */
|
||||
switch (chg->pdata->ovp_uvolt) {
|
||||
case 7500000:
|
||||
reg_data = 0x0;
|
||||
break;
|
||||
case 6000000:
|
||||
case 6500000:
|
||||
case 7000000:
|
||||
reg_data = 0x1 + (chg->pdata->ovp_uvolt - 6000000) / 500000;
|
||||
break;
|
||||
default:
|
||||
dev_err(chg->dev, "Wrong value for OVP: %u\n",
|
||||
chg->pdata->ovp_uvolt);
|
||||
return -EINVAL;
|
||||
}
|
||||
reg_data <<= CHGCTRL7_OTPCGHCVS_SHIFT;
|
||||
max14577_write_reg(rmap, MAX14577_REG_CHGCTRL7, reg_data);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* Support property from charger */
|
||||
@ -215,7 +378,11 @@ static enum power_supply_property max14577_charger_props[] = {
|
||||
POWER_SUPPLY_PROP_MANUFACTURER,
|
||||
};
|
||||
|
||||
static const char *model_name = "MAX14577";
|
||||
static const char * const model_names[] = {
|
||||
[MAXIM_DEVICE_TYPE_UNKNOWN] = "MAX14577-like",
|
||||
[MAXIM_DEVICE_TYPE_MAX14577] = "MAX14577",
|
||||
[MAXIM_DEVICE_TYPE_MAX77836] = "MAX77836",
|
||||
};
|
||||
static const char *manufacturer = "Maxim Integrated";
|
||||
|
||||
static int max14577_charger_get_property(struct power_supply *psy,
|
||||
@ -244,7 +411,8 @@ static int max14577_charger_get_property(struct power_supply *psy,
|
||||
val->intval = max14577_get_online(chg);
|
||||
break;
|
||||
case POWER_SUPPLY_PROP_MODEL_NAME:
|
||||
val->strval = model_name;
|
||||
BUILD_BUG_ON(ARRAY_SIZE(model_names) != MAXIM_DEVICE_TYPE_NUM);
|
||||
val->strval = model_names[chg->max14577->dev_type];
|
||||
break;
|
||||
case POWER_SUPPLY_PROP_MANUFACTURER:
|
||||
val->strval = manufacturer;
|
||||
@ -256,6 +424,110 @@ static int max14577_charger_get_property(struct power_supply *psy,
|
||||
return ret;
|
||||
}
|
||||
|
||||
#ifdef CONFIG_OF
|
||||
static struct max14577_charger_platform_data *max14577_charger_dt_init(
|
||||
struct platform_device *pdev)
|
||||
{
|
||||
struct max14577_charger_platform_data *pdata;
|
||||
struct device_node *np = pdev->dev.of_node;
|
||||
int ret;
|
||||
|
||||
if (!np) {
|
||||
dev_err(&pdev->dev, "No charger OF node\n");
|
||||
return ERR_PTR(-EINVAL);
|
||||
}
|
||||
|
||||
pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
|
||||
if (!pdata)
|
||||
return ERR_PTR(-ENOMEM);
|
||||
|
||||
ret = of_property_read_u32(np, "maxim,constant-uvolt",
|
||||
&pdata->constant_uvolt);
|
||||
if (ret) {
|
||||
dev_err(&pdev->dev, "Cannot parse maxim,constant-uvolt field from DT\n");
|
||||
return ERR_PTR(ret);
|
||||
}
|
||||
|
||||
ret = of_property_read_u32(np, "maxim,fast-charge-uamp",
|
||||
&pdata->fast_charge_uamp);
|
||||
if (ret) {
|
||||
dev_err(&pdev->dev, "Cannot parse maxim,fast-charge-uamp field from DT\n");
|
||||
return ERR_PTR(ret);
|
||||
}
|
||||
|
||||
ret = of_property_read_u32(np, "maxim,eoc-uamp", &pdata->eoc_uamp);
|
||||
if (ret) {
|
||||
dev_err(&pdev->dev, "Cannot parse maxim,eoc-uamp field from DT\n");
|
||||
return ERR_PTR(ret);
|
||||
}
|
||||
|
||||
ret = of_property_read_u32(np, "maxim,ovp-uvolt", &pdata->ovp_uvolt);
|
||||
if (ret) {
|
||||
dev_err(&pdev->dev, "Cannot parse maxim,ovp-uvolt field from DT\n");
|
||||
return ERR_PTR(ret);
|
||||
}
|
||||
|
||||
return pdata;
|
||||
}
|
||||
#else /* CONFIG_OF */
|
||||
static struct max14577_charger_platform_data *max14577_charger_dt_init(
|
||||
struct platform_device *pdev)
|
||||
{
|
||||
return NULL;
|
||||
}
|
||||
#endif /* CONFIG_OF */
|
||||
|
||||
static ssize_t show_fast_charge_timer(struct device *dev,
|
||||
struct device_attribute *attr, char *buf)
|
||||
{
|
||||
struct max14577_charger *chg = dev_get_drvdata(dev);
|
||||
u8 reg_data;
|
||||
int ret;
|
||||
unsigned int val;
|
||||
|
||||
ret = max14577_read_reg(chg->max14577->regmap, MAX14577_REG_CHGCTRL1,
|
||||
®_data);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
reg_data &= CHGCTRL1_TCHW_MASK;
|
||||
reg_data >>= CHGCTRL1_TCHW_SHIFT;
|
||||
switch (reg_data) {
|
||||
case 0x2 ... 0x4:
|
||||
val = reg_data + 3;
|
||||
break;
|
||||
case 0x7:
|
||||
val = 0;
|
||||
break;
|
||||
default:
|
||||
val = 5;
|
||||
break;
|
||||
}
|
||||
|
||||
return scnprintf(buf, PAGE_SIZE, "%u\n", val);
|
||||
}
|
||||
|
||||
static ssize_t store_fast_charge_timer(struct device *dev,
|
||||
struct device_attribute *attr, const char *buf, size_t count)
|
||||
{
|
||||
struct max14577_charger *chg = dev_get_drvdata(dev);
|
||||
unsigned long val;
|
||||
int ret;
|
||||
|
||||
ret = kstrtoul(buf, 10, &val);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
ret = max14577_set_fast_charge_timer(chg, val);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
return count;
|
||||
}
|
||||
|
||||
static DEVICE_ATTR(fast_charge_timer, S_IRUGO | S_IWUSR,
|
||||
show_fast_charge_timer, store_fast_charge_timer);
|
||||
|
||||
static int max14577_charger_probe(struct platform_device *pdev)
|
||||
{
|
||||
struct max14577_charger *chg;
|
||||
@ -270,7 +542,13 @@ static int max14577_charger_probe(struct platform_device *pdev)
|
||||
chg->dev = &pdev->dev;
|
||||
chg->max14577 = max14577;
|
||||
|
||||
max14577_charger_reg_init(chg);
|
||||
chg->pdata = max14577_charger_dt_init(pdev);
|
||||
if (IS_ERR_OR_NULL(chg->pdata))
|
||||
return PTR_ERR(chg->pdata);
|
||||
|
||||
ret = max14577_charger_reg_init(chg);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
chg->charger.name = "max14577-charger",
|
||||
chg->charger.type = POWER_SUPPLY_TYPE_BATTERY,
|
||||
@ -278,24 +556,47 @@ static int max14577_charger_probe(struct platform_device *pdev)
|
||||
chg->charger.num_properties = ARRAY_SIZE(max14577_charger_props),
|
||||
chg->charger.get_property = max14577_charger_get_property,
|
||||
|
||||
ret = power_supply_register(&pdev->dev, &chg->charger);
|
||||
ret = device_create_file(&pdev->dev, &dev_attr_fast_charge_timer);
|
||||
if (ret) {
|
||||
dev_err(&pdev->dev, "failed: power supply register\n");
|
||||
dev_err(&pdev->dev, "failed: create sysfs entry\n");
|
||||
return ret;
|
||||
}
|
||||
|
||||
ret = power_supply_register(&pdev->dev, &chg->charger);
|
||||
if (ret) {
|
||||
dev_err(&pdev->dev, "failed: power supply register\n");
|
||||
goto err;
|
||||
}
|
||||
|
||||
/* Check for valid values for charger */
|
||||
BUILD_BUG_ON(MAX14577_CHARGER_EOC_CURRENT_LIMIT_MIN +
|
||||
MAX14577_CHARGER_EOC_CURRENT_LIMIT_STEP * 0xf !=
|
||||
MAX14577_CHARGER_EOC_CURRENT_LIMIT_MAX);
|
||||
return 0;
|
||||
|
||||
err:
|
||||
device_remove_file(&pdev->dev, &dev_attr_fast_charge_timer);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int max14577_charger_remove(struct platform_device *pdev)
|
||||
{
|
||||
struct max14577_charger *chg = platform_get_drvdata(pdev);
|
||||
|
||||
device_remove_file(&pdev->dev, &dev_attr_fast_charge_timer);
|
||||
power_supply_unregister(&chg->charger);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static const struct platform_device_id max14577_charger_id[] = {
|
||||
{ "max14577-charger", MAXIM_DEVICE_TYPE_MAX14577, },
|
||||
{ "max77836-charger", MAXIM_DEVICE_TYPE_MAX77836, },
|
||||
{ }
|
||||
};
|
||||
MODULE_DEVICE_TABLE(platform, max14577_charger_id);
|
||||
|
||||
static struct platform_driver max14577_charger_driver = {
|
||||
.driver = {
|
||||
.owner = THIS_MODULE,
|
||||
@ -303,9 +604,10 @@ static struct platform_driver max14577_charger_driver = {
|
||||
},
|
||||
.probe = max14577_charger_probe,
|
||||
.remove = max14577_charger_remove,
|
||||
.id_table = max14577_charger_id,
|
||||
};
|
||||
module_platform_driver(max14577_charger_driver);
|
||||
|
||||
MODULE_AUTHOR("Krzysztof Kozlowski <k.kozlowski@samsung.com>");
|
||||
MODULE_DESCRIPTION("MAXIM 14577 charger driver");
|
||||
MODULE_DESCRIPTION("Maxim 14577/77836 charger driver");
|
||||
MODULE_LICENSE("GPL");
|
||||
|
||||
@ -277,7 +277,8 @@ static SIMPLE_DEV_PM_OPS(max17040_pm_ops, max17040_suspend, max17040_resume);
|
||||
#endif /* CONFIG_PM_SLEEP */
|
||||
|
||||
static const struct i2c_device_id max17040_id[] = {
|
||||
{ "max17040", 0 },
|
||||
{ "max17040" },
|
||||
{ "max77836-battery" },
|
||||
{ }
|
||||
};
|
||||
MODULE_DEVICE_TABLE(i2c, max17040_id);
|
||||
|
||||
@ -22,42 +22,6 @@
|
||||
#include <linux/mfd/max14577-private.h>
|
||||
#include <linux/regulator/of_regulator.h>
|
||||
|
||||
/*
|
||||
* Valid limits of current for max14577 and max77836 chargers.
|
||||
* They must correspond to MBCICHWRCL and MBCICHWRCH fields in CHGCTRL4
|
||||
* register for given chipset.
|
||||
*/
|
||||
struct maxim_charger_current {
|
||||
/* Minimal current, set in CHGCTRL4/MBCICHWRCL, uA */
|
||||
unsigned int min;
|
||||
/*
|
||||
* Minimal current when high setting is active,
|
||||
* set in CHGCTRL4/MBCICHWRCH, uA
|
||||
*/
|
||||
unsigned int high_start;
|
||||
/* Value of one step in high setting, uA */
|
||||
unsigned int high_step;
|
||||
/* Maximum current of high setting, uA */
|
||||
unsigned int max;
|
||||
};
|
||||
|
||||
/* Table of valid charger currents for different Maxim chipsets */
|
||||
static const struct maxim_charger_current maxim_charger_currents[] = {
|
||||
[MAXIM_DEVICE_TYPE_UNKNOWN] = { 0, 0, 0, 0 },
|
||||
[MAXIM_DEVICE_TYPE_MAX14577] = {
|
||||
.min = MAX14577_REGULATOR_CURRENT_LIMIT_MIN,
|
||||
.high_start = MAX14577_REGULATOR_CURRENT_LIMIT_HIGH_START,
|
||||
.high_step = MAX14577_REGULATOR_CURRENT_LIMIT_HIGH_STEP,
|
||||
.max = MAX14577_REGULATOR_CURRENT_LIMIT_MAX,
|
||||
},
|
||||
[MAXIM_DEVICE_TYPE_MAX77836] = {
|
||||
.min = MAX77836_REGULATOR_CURRENT_LIMIT_MIN,
|
||||
.high_start = MAX77836_REGULATOR_CURRENT_LIMIT_HIGH_START,
|
||||
.high_step = MAX77836_REGULATOR_CURRENT_LIMIT_HIGH_STEP,
|
||||
.max = MAX77836_REGULATOR_CURRENT_LIMIT_MAX,
|
||||
},
|
||||
};
|
||||
|
||||
static int max14577_reg_is_enabled(struct regulator_dev *rdev)
|
||||
{
|
||||
int rid = rdev_get_id(rdev);
|
||||
@ -103,8 +67,8 @@ static int max14577_reg_get_current_limit(struct regulator_dev *rdev)
|
||||
static int max14577_reg_set_current_limit(struct regulator_dev *rdev,
|
||||
int min_uA, int max_uA)
|
||||
{
|
||||
int i, current_bits = 0xf;
|
||||
u8 reg_data;
|
||||
int ret;
|
||||
struct max14577 *max14577 = rdev_get_drvdata(rdev);
|
||||
const struct maxim_charger_current *limits =
|
||||
&maxim_charger_currents[max14577->dev_type];
|
||||
@ -112,35 +76,9 @@ static int max14577_reg_set_current_limit(struct regulator_dev *rdev,
|
||||
if (rdev_get_id(rdev) != MAX14577_CHARGER)
|
||||
return -EINVAL;
|
||||
|
||||
if (min_uA > limits->max || max_uA < limits->min)
|
||||
return -EINVAL;
|
||||
|
||||
if (max_uA < limits->high_start) {
|
||||
/*
|
||||
* Less than high_start,
|
||||
* so set the minimal current (turn only Low Bit off)
|
||||
*/
|
||||
u8 reg_data = 0x0 << CHGCTRL4_MBCICHWRCL_SHIFT;
|
||||
return max14577_update_reg(rdev->regmap,
|
||||
MAX14577_CHG_REG_CHG_CTRL4,
|
||||
CHGCTRL4_MBCICHWRCL_MASK, reg_data);
|
||||
}
|
||||
|
||||
/*
|
||||
* max_uA is in range: <high_start, inifinite>, so search for
|
||||
* valid current starting from maximum current.
|
||||
*/
|
||||
for (i = limits->max; i >= limits->high_start; i -= limits->high_step) {
|
||||
if (i <= max_uA)
|
||||
break;
|
||||
current_bits--;
|
||||
}
|
||||
BUG_ON(current_bits < 0); /* Cannot happen */
|
||||
|
||||
/* Turn Low Bit on (use range high_start-max)... */
|
||||
reg_data = 0x1 << CHGCTRL4_MBCICHWRCL_SHIFT;
|
||||
/* and set proper High Bits */
|
||||
reg_data |= current_bits << CHGCTRL4_MBCICHWRCH_SHIFT;
|
||||
ret = maxim_charger_calc_reg_current(limits, min_uA, max_uA, ®_data);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
return max14577_update_reg(rdev->regmap, MAX14577_CHG_REG_CHG_CTRL4,
|
||||
CHGCTRL4_MBCICHWRCL_MASK | CHGCTRL4_MBCICHWRCH_MASK,
|
||||
@ -442,16 +380,6 @@ static struct platform_driver max14577_regulator_driver = {
|
||||
|
||||
static int __init max14577_regulator_init(void)
|
||||
{
|
||||
/* Check for valid values for charger */
|
||||
BUILD_BUG_ON(MAX14577_REGULATOR_CURRENT_LIMIT_HIGH_START +
|
||||
MAX14577_REGULATOR_CURRENT_LIMIT_HIGH_STEP * 0xf !=
|
||||
MAX14577_REGULATOR_CURRENT_LIMIT_MAX);
|
||||
BUILD_BUG_ON(MAX77836_REGULATOR_CURRENT_LIMIT_HIGH_START +
|
||||
MAX77836_REGULATOR_CURRENT_LIMIT_HIGH_STEP * 0xf !=
|
||||
MAX77836_REGULATOR_CURRENT_LIMIT_MAX);
|
||||
/* Valid charger current values must be provided for each chipset */
|
||||
BUILD_BUG_ON(ARRAY_SIZE(maxim_charger_currents) != MAXIM_DEVICE_TYPE_NUM);
|
||||
|
||||
BUILD_BUG_ON(ARRAY_SIZE(max14577_supported_regulators) != MAX14577_REGULATOR_NUM);
|
||||
BUILD_BUG_ON(ARRAY_SIZE(max77836_supported_regulators) != MAX77836_REGULATOR_NUM);
|
||||
|
||||
|
||||
@ -72,15 +72,33 @@ enum max14577_muic_reg {
|
||||
MAX14577_MUIC_REG_END,
|
||||
};
|
||||
|
||||
/*
|
||||
* Combined charger types for max14577 and max77836.
|
||||
*
|
||||
* On max14577 three lower bits map to STATUS2/CHGTYP field.
|
||||
* However the max77836 has different two last values of STATUS2/CHGTYP.
|
||||
* To indicate the difference enum has two additional values for max77836.
|
||||
* These values are just a register value bitwise OR with 0x8.
|
||||
*/
|
||||
enum max14577_muic_charger_type {
|
||||
MAX14577_CHARGER_TYPE_NONE = 0,
|
||||
MAX14577_CHARGER_TYPE_USB,
|
||||
MAX14577_CHARGER_TYPE_DOWNSTREAM_PORT,
|
||||
MAX14577_CHARGER_TYPE_DEDICATED_CHG,
|
||||
MAX14577_CHARGER_TYPE_SPECIAL_500MA,
|
||||
MAX14577_CHARGER_TYPE_SPECIAL_1A,
|
||||
MAX14577_CHARGER_TYPE_RESERVED,
|
||||
MAX14577_CHARGER_TYPE_DEAD_BATTERY = 7,
|
||||
MAX14577_CHARGER_TYPE_NONE = 0x0,
|
||||
MAX14577_CHARGER_TYPE_USB = 0x1,
|
||||
MAX14577_CHARGER_TYPE_DOWNSTREAM_PORT = 0x2,
|
||||
MAX14577_CHARGER_TYPE_DEDICATED_CHG = 0x3,
|
||||
MAX14577_CHARGER_TYPE_SPECIAL_500MA = 0x4,
|
||||
/* Special 1A or 2A charger */
|
||||
MAX14577_CHARGER_TYPE_SPECIAL_1A = 0x5,
|
||||
/* max14577: reserved, used on max77836 */
|
||||
MAX14577_CHARGER_TYPE_RESERVED = 0x6,
|
||||
/* max14577: dead-battery charing with maximum current 100mA */
|
||||
MAX14577_CHARGER_TYPE_DEAD_BATTERY = 0x7,
|
||||
/*
|
||||
* max77836: special charger (bias on D+/D-),
|
||||
* matches register value of 0x6
|
||||
*/
|
||||
MAX77836_CHARGER_TYPE_SPECIAL_BIAS = 0xe,
|
||||
/* max77836: reserved, register value 0x7 */
|
||||
MAX77836_CHARGER_TYPE_RESERVED = 0xf,
|
||||
};
|
||||
|
||||
/* MAX14577 interrupts */
|
||||
@ -121,13 +139,15 @@ enum max14577_muic_charger_type {
|
||||
#define STATUS2_CHGTYP_SHIFT 0
|
||||
#define STATUS2_CHGDETRUN_SHIFT 3
|
||||
#define STATUS2_DCDTMR_SHIFT 4
|
||||
#define STATUS2_DBCHG_SHIFT 5
|
||||
#define MAX14577_STATUS2_DBCHG_SHIFT 5
|
||||
#define MAX77836_STATUS2_DXOVP_SHIFT 5
|
||||
#define STATUS2_VBVOLT_SHIFT 6
|
||||
#define MAX77836_STATUS2_VIDRM_SHIFT 7
|
||||
#define STATUS2_CHGTYP_MASK (0x7 << STATUS2_CHGTYP_SHIFT)
|
||||
#define STATUS2_CHGDETRUN_MASK BIT(STATUS2_CHGDETRUN_SHIFT)
|
||||
#define STATUS2_DCDTMR_MASK BIT(STATUS2_DCDTMR_SHIFT)
|
||||
#define STATUS2_DBCHG_MASK BIT(STATUS2_DBCHG_SHIFT)
|
||||
#define MAX14577_STATUS2_DBCHG_MASK BIT(MAX14577_STATUS2_DBCHG_SHIFT)
|
||||
#define MAX77836_STATUS2_DXOVP_MASK BIT(MAX77836_STATUS2_DXOVP_SHIFT)
|
||||
#define STATUS2_VBVOLT_MASK BIT(STATUS2_VBVOLT_SHIFT)
|
||||
#define MAX77836_STATUS2_VIDRM_MASK BIT(MAX77836_STATUS2_VIDRM_SHIFT)
|
||||
|
||||
@ -177,9 +197,11 @@ enum max14577_muic_charger_type {
|
||||
#define CTRL3_JIGSET_SHIFT 0
|
||||
#define CTRL3_BOOTSET_SHIFT 2
|
||||
#define CTRL3_ADCDBSET_SHIFT 4
|
||||
#define CTRL3_WBTH_SHIFT 6
|
||||
#define CTRL3_JIGSET_MASK (0x3 << CTRL3_JIGSET_SHIFT)
|
||||
#define CTRL3_BOOTSET_MASK (0x3 << CTRL3_BOOTSET_SHIFT)
|
||||
#define CTRL3_ADCDBSET_MASK (0x3 << CTRL3_ADCDBSET_SHIFT)
|
||||
#define CTRL3_WBTH_MASK (0x3 << CTRL3_WBTH_SHIFT)
|
||||
|
||||
/* Slave addr = 0x4A: Charger */
|
||||
enum max14577_charger_reg {
|
||||
@ -210,16 +232,20 @@ enum max14577_charger_reg {
|
||||
#define CDETCTRL1_CHGTYPMAN_SHIFT 1
|
||||
#define CDETCTRL1_DCDEN_SHIFT 2
|
||||
#define CDETCTRL1_DCD2SCT_SHIFT 3
|
||||
#define CDETCTRL1_DCHKTM_SHIFT 4
|
||||
#define CDETCTRL1_DBEXIT_SHIFT 5
|
||||
#define MAX14577_CDETCTRL1_DCHKTM_SHIFT 4
|
||||
#define MAX77836_CDETCTRL1_CDLY_SHIFT 4
|
||||
#define MAX14577_CDETCTRL1_DBEXIT_SHIFT 5
|
||||
#define MAX77836_CDETCTRL1_DCDCPL_SHIFT 5
|
||||
#define CDETCTRL1_DBIDLE_SHIFT 6
|
||||
#define CDETCTRL1_CDPDET_SHIFT 7
|
||||
#define CDETCTRL1_CHGDETEN_MASK BIT(CDETCTRL1_CHGDETEN_SHIFT)
|
||||
#define CDETCTRL1_CHGTYPMAN_MASK BIT(CDETCTRL1_CHGTYPMAN_SHIFT)
|
||||
#define CDETCTRL1_DCDEN_MASK BIT(CDETCTRL1_DCDEN_SHIFT)
|
||||
#define CDETCTRL1_DCD2SCT_MASK BIT(CDETCTRL1_DCD2SCT_SHIFT)
|
||||
#define CDETCTRL1_DCHKTM_MASK BIT(CDETCTRL1_DCHKTM_SHIFT)
|
||||
#define CDETCTRL1_DBEXIT_MASK BIT(CDETCTRL1_DBEXIT_SHIFT)
|
||||
#define MAX14577_CDETCTRL1_DCHKTM_MASK BIT(MAX14577_CDETCTRL1_DCHKTM_SHIFT)
|
||||
#define MAX77836_CDETCTRL1_CDDLY_MASK BIT(MAX77836_CDETCTRL1_CDDLY_SHIFT)
|
||||
#define MAX14577_CDETCTRL1_DBEXIT_MASK BIT(MAX14577_CDETCTRL1_DBEXIT_SHIFT)
|
||||
#define MAX77836_CDETCTRL1_DCDCPL_MASK BIT(MAX77836_CDETCTRL1_DCDCPL_SHIFT)
|
||||
#define CDETCTRL1_DBIDLE_MASK BIT(CDETCTRL1_DBIDLE_SHIFT)
|
||||
#define CDETCTRL1_CDPDET_MASK BIT(CDETCTRL1_CDPDET_SHIFT)
|
||||
|
||||
@ -255,17 +281,36 @@ enum max14577_charger_reg {
|
||||
#define CHGCTRL7_OTPCGHCVS_SHIFT 0
|
||||
#define CHGCTRL7_OTPCGHCVS_MASK (0x3 << CHGCTRL7_OTPCGHCVS_SHIFT)
|
||||
|
||||
/* MAX14577 regulator current limits (as in CHGCTRL4 register), uA */
|
||||
#define MAX14577_REGULATOR_CURRENT_LIMIT_MIN 90000
|
||||
#define MAX14577_REGULATOR_CURRENT_LIMIT_HIGH_START 200000
|
||||
#define MAX14577_REGULATOR_CURRENT_LIMIT_HIGH_STEP 50000
|
||||
#define MAX14577_REGULATOR_CURRENT_LIMIT_MAX 950000
|
||||
/* MAX14577 charger current limits (as in CHGCTRL4 register), uA */
|
||||
#define MAX14577_CHARGER_CURRENT_LIMIT_MIN 90000U
|
||||
#define MAX14577_CHARGER_CURRENT_LIMIT_HIGH_START 200000U
|
||||
#define MAX14577_CHARGER_CURRENT_LIMIT_HIGH_STEP 50000U
|
||||
#define MAX14577_CHARGER_CURRENT_LIMIT_MAX 950000U
|
||||
|
||||
/* MAX77836 regulator current limits (as in CHGCTRL4 register), uA */
|
||||
#define MAX77836_REGULATOR_CURRENT_LIMIT_MIN 45000
|
||||
#define MAX77836_REGULATOR_CURRENT_LIMIT_HIGH_START 100000
|
||||
#define MAX77836_REGULATOR_CURRENT_LIMIT_HIGH_STEP 25000
|
||||
#define MAX77836_REGULATOR_CURRENT_LIMIT_MAX 475000
|
||||
/* MAX77836 charger current limits (as in CHGCTRL4 register), uA */
|
||||
#define MAX77836_CHARGER_CURRENT_LIMIT_MIN 45000U
|
||||
#define MAX77836_CHARGER_CURRENT_LIMIT_HIGH_START 100000U
|
||||
#define MAX77836_CHARGER_CURRENT_LIMIT_HIGH_STEP 25000U
|
||||
#define MAX77836_CHARGER_CURRENT_LIMIT_MAX 475000U
|
||||
|
||||
/*
|
||||
* MAX14577 charger End-Of-Charge current limits
|
||||
* (as in CHGCTRL5 register), uA
|
||||
*/
|
||||
#define MAX14577_CHARGER_EOC_CURRENT_LIMIT_MIN 50000U
|
||||
#define MAX14577_CHARGER_EOC_CURRENT_LIMIT_STEP 10000U
|
||||
#define MAX14577_CHARGER_EOC_CURRENT_LIMIT_MAX 200000U
|
||||
|
||||
/*
|
||||
* MAX14577/MAX77836 Battery Constant Voltage
|
||||
* (as in CHGCTRL3 register), uV
|
||||
*/
|
||||
#define MAXIM_CHARGER_CONSTANT_VOLTAGE_MIN 4000000U
|
||||
#define MAXIM_CHARGER_CONSTANT_VOLTAGE_STEP 20000U
|
||||
#define MAXIM_CHARGER_CONSTANT_VOLTAGE_MAX 4350000U
|
||||
|
||||
/* Default value for fast charge timer, in hours */
|
||||
#define MAXIM_CHARGER_FAST_CHARGE_TIMER_DEFAULT 5
|
||||
|
||||
/* MAX14577 regulator SFOUT LDO voltage, fixed, uV */
|
||||
#define MAX14577_REGULATOR_SAFEOUT_VOLTAGE 4900000
|
||||
|
||||
@ -54,6 +54,13 @@ struct max14577_regulator_platform_data {
|
||||
struct device_node *of_node;
|
||||
};
|
||||
|
||||
struct max14577_charger_platform_data {
|
||||
u32 constant_uvolt;
|
||||
u32 fast_charge_uamp;
|
||||
u32 eoc_uamp;
|
||||
u32 ovp_uvolt;
|
||||
};
|
||||
|
||||
/*
|
||||
* MAX14577 MFD platform data
|
||||
*/
|
||||
@ -74,4 +81,27 @@ struct max14577_platform_data {
|
||||
struct max14577_regulator_platform_data *regulators;
|
||||
};
|
||||
|
||||
/*
|
||||
* Valid limits of current for max14577 and max77836 chargers.
|
||||
* They must correspond to MBCICHWRCL and MBCICHWRCH fields in CHGCTRL4
|
||||
* register for given chipset.
|
||||
*/
|
||||
struct maxim_charger_current {
|
||||
/* Minimal current, set in CHGCTRL4/MBCICHWRCL, uA */
|
||||
unsigned int min;
|
||||
/*
|
||||
* Minimal current when high setting is active,
|
||||
* set in CHGCTRL4/MBCICHWRCH, uA
|
||||
*/
|
||||
unsigned int high_start;
|
||||
/* Value of one step in high setting, uA */
|
||||
unsigned int high_step;
|
||||
/* Maximum current of high setting, uA */
|
||||
unsigned int max;
|
||||
};
|
||||
|
||||
extern const struct maxim_charger_current maxim_charger_currents[];
|
||||
extern int maxim_charger_calc_reg_current(const struct maxim_charger_current *limits,
|
||||
unsigned int min_ua, unsigned int max_ua, u8 *dst);
|
||||
|
||||
#endif /* __MAX14577_H__ */
|
||||
|
||||
Loading…
Reference in New Issue
Block a user