it to an output when the power-off handler is called. If this optional
property is not specified, the GPIO is initialized as an output in its
inactive state.
+- active-delay-ms: Delay (default 100) to wait after driving gpio active
+- inactive-delay-ms: Delay (default 100) to wait after driving gpio inactive
- timeout-ms: Time to wait before asserting a WARN_ON(1). If nothing is
specified, 3000 ms is used.
- compatible: One of:
"x-powers,axp202-ac-power-supply"
"x-powers,axp221-ac-power-supply"
+ "x-powers,axp813-ac-power-supply"
This node is a subnode of the axp20x PMIC.
The AXP22X is only able to tell if an AC power supply is present and
usable.
+AXP813/AXP803 are able to limit current and supply voltage
+
Example:
&axp209 {
- charge-term-current-microamp: current for charge termination phase
- constant-charge-current-max-microamp: maximum constant input current
- constant-charge-voltage-max-microvolt: maximum constant input voltage
+ - factory-internal-resistance-micro-ohms: battery factory internal resistance
+ - ocv-capacity-table-0: An array providing the open circuit voltage (OCV)
+ of the battery and corresponding battery capacity percent, which is used
+ to look up battery capacity according to current OCV value. And the open
+ circuit voltage unit is microvolt.
+ - ocv-capacity-table-1: Same as ocv-capacity-table-0
+ ......
+ - ocv-capacity-table-n: Same as ocv-capacity-table-0
+ - ocv-capacity-celsius: An array containing the temperature in degree Celsius,
+ for each of the battery capacity lookup table. The first temperature value
+ specifies the OCV table 0, and the second temperature value specifies the
+ OCV table 1, and so on.
Battery properties are named, where possible, for the corresponding
elements in enum power_supply_property, defined in
charge-term-current-microamp = <128000>;
constant-charge-current-max-microamp = <900000>;
constant-charge-voltage-max-microvolt = <4200000>;
+ factory-internal-resistance-micro-ohms = <250000>;
+ ocv-capacity-celsius = <(-10) 0 10>;
+ ocv-capacity-table-0 = <4185000 100>, <4113000 95>, <4066000 90>, ...;
+ ocv-capacity-table-1 = <4200000 100>, <4185000 95>, <4113000 90>, ...;
+ ocv-capacity-table-2 = <4250000 100>, <4200000 95>, <4185000 90>, ...;
};
charger: charger@11 {
Required properties:
- compatible: contains one of the following:
* "ti,bq24190"
+ * "ti,bq24192"
* "ti,bq24192i"
+ * "ti,bq24196"
- reg: integer, I2C address of the charger.
- interrupts[-extended]: configuration for charger INT pin.
- ti,system-minimum-microvolt: when power is connected and the battery is below
minimum system voltage, the system will be regulated above this setting.
+child nodes:
+- usb-otg-vbus:
+ Usage: optional
+ Description: Regulator that is used to control the VBUS voltage direction for
+ either USB host mode or for charging on the OTG port.
+
Notes:
- Some circuit boards wire the chip's "OTG" pin high (enabling 500mA default
charge current on USB SDP ports, among other features). To simulate this on
interrupts-extended = <&gpiochip 10 IRQ_TYPE_EDGE_FALLING>;
monitored-battery = <&bat>;
ti,system-minimum-microvolt = <3200000>;
+
+ usb_otg_vbus: usb-otg-vbus { };
};
&twl_gpio {
--- /dev/null
+Spreadtrum SC27XX PMICs Fuel Gauge Unit Power Supply Bindings
+
+Required properties:
+- compatible: Should be one of the following:
+ "sprd,sc2720-fgu",
+ "sprd,sc2721-fgu",
+ "sprd,sc2723-fgu",
+ "sprd,sc2730-fgu",
+ "sprd,sc2731-fgu".
+- reg: The address offset of fuel gauge unit.
+- battery-detect-gpios: GPIO for battery detection.
+- io-channels: Specify the IIO ADC channel to get temperature.
+- io-channel-names: Should be "bat-temp".
+- nvmem-cells: A phandle to the calibration cells provided by eFuse device.
+- nvmem-cell-names: Should be "fgu_calib".
+- monitored-battery: Phandle of battery characteristics devicetree node.
+ See Documentation/devicetree/bindings/power/supply/battery.txt
+
+Example:
+
+ bat: battery {
+ compatible = "simple-battery";
+ charge-full-design-microamp-hours = <1900000>;
+ constant-charge-voltage-max-microvolt = <4350000>;
+ ocv-capacity-celsius = <20>;
+ ocv-capacity-table-0 = <4185000 100>, <4113000 95>, <4066000 90>,
+ <4022000 85>, <3983000 80>, <3949000 75>,
+ <3917000 70>, <3889000 65>, <3864000 60>,
+ <3835000 55>, <3805000 50>, <3787000 45>,
+ <3777000 40>, <3773000 35>, <3770000 30>,
+ <3765000 25>, <3752000 20>, <3724000 15>,
+ <3680000 10>, <3605000 5>, <3400000 0>;
+ ......
+ };
+
+ sc2731_pmic: pmic@0 {
+ compatible = "sprd,sc2731";
+ reg = <0>;
+ spi-max-frequency = <26000000>;
+ interrupts = <GIC_SPI 31 IRQ_TYPE_LEVEL_HIGH>;
+ interrupt-controller;
+ #interrupt-cells = <2>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ fgu@a00 {
+ compatible = "sprd,sc2731-fgu";
+ reg = <0xa00>;
+ battery-detect-gpios = <&pmic_eic 9 GPIO_ACTIVE_HIGH>;
+ io-channels = <&pmic_adc 5>;
+ io-channel-names = "bat-temp";
+ nvmem-cells = <&fgu_calib>;
+ nvmem-cell-names = "fgu_calib";
+ monitored-battery = <&bat>;
+ };
+ };
[AT91_SHDW_WKMODE0_ANYLEVEL] = "any",
};
-static void __iomem *at91_shdwc_base;
-static struct clk *sclk;
-static void __iomem *mpddrc_base;
+static struct shdwc {
+ struct clk *sclk;
+ void __iomem *shdwc_base;
+ void __iomem *mpddrc_base;
+} at91_shdwc;
static void __init at91_wakeup_status(struct platform_device *pdev)
{
const char *reason;
- u32 reg = readl(at91_shdwc_base + AT91_SHDW_SR);
+ u32 reg = readl(at91_shdwc.shdwc_base + AT91_SHDW_SR);
/* Simple power-on, just bail out */
if (!reg)
static void at91_poweroff(void)
{
- writel(AT91_SHDW_KEY | AT91_SHDW_SHDW, at91_shdwc_base + AT91_SHDW_CR);
-}
-
-static void at91_lpddr_poweroff(void)
-{
asm volatile(
/* Align to cache lines */
".balign 32\n\t"
" ldr r6, [%2, #" __stringify(AT91_SHDW_CR) "]\n\t"
/* Power down SDRAM0 */
+ " tst %0, #0\n\t"
+ " beq 1f\n\t"
" str %1, [%0, #" __stringify(AT91_DDRSDRC_LPR) "]\n\t"
/* Shutdown CPU */
- " str %3, [%2, #" __stringify(AT91_SHDW_CR) "]\n\t"
+ "1: str %3, [%2, #" __stringify(AT91_SHDW_CR) "]\n\t"
" b .\n\t"
:
- : "r" (mpddrc_base),
+ : "r" (at91_shdwc.mpddrc_base),
"r" cpu_to_le32(AT91_DDRSDRC_LPDDR2_PWOFF),
- "r" (at91_shdwc_base),
+ "r" (at91_shdwc.shdwc_base),
"r" cpu_to_le32(AT91_SHDW_KEY | AT91_SHDW_SHDW)
: "r6");
}
if (of_property_read_bool(np, "atmel,wakeup-rtt-timer"))
mode |= AT91_SHDW_RTTWKEN;
- writel(wakeup_mode | mode, at91_shdwc_base + AT91_SHDW_MR);
+ writel(wakeup_mode | mode, at91_shdwc.shdwc_base + AT91_SHDW_MR);
}
static int __init at91_poweroff_probe(struct platform_device *pdev)
int ret;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- at91_shdwc_base = devm_ioremap_resource(&pdev->dev, res);
- if (IS_ERR(at91_shdwc_base))
- return PTR_ERR(at91_shdwc_base);
+ at91_shdwc.shdwc_base = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(at91_shdwc.shdwc_base))
+ return PTR_ERR(at91_shdwc.shdwc_base);
- sclk = devm_clk_get(&pdev->dev, NULL);
- if (IS_ERR(sclk))
- return PTR_ERR(sclk);
+ at91_shdwc.sclk = devm_clk_get(&pdev->dev, NULL);
+ if (IS_ERR(at91_shdwc.sclk))
+ return PTR_ERR(at91_shdwc.sclk);
- ret = clk_prepare_enable(sclk);
+ ret = clk_prepare_enable(at91_shdwc.sclk);
if (ret) {
dev_err(&pdev->dev, "Could not enable slow clock\n");
return ret;
if (pdev->dev.of_node)
at91_poweroff_dt_set_wakeup_mode(pdev);
- pm_power_off = at91_poweroff;
-
np = of_find_compatible_node(NULL, NULL, "atmel,sama5d3-ddramc");
- if (!np)
- return 0;
+ if (np) {
+ at91_shdwc.mpddrc_base = of_iomap(np, 0);
+ of_node_put(np);
- mpddrc_base = of_iomap(np, 0);
- of_node_put(np);
+ if (!at91_shdwc.mpddrc_base) {
+ ret = -ENOMEM;
+ goto clk_disable;
+ }
- if (!mpddrc_base)
- return 0;
+ ddr_type = readl(at91_shdwc.mpddrc_base + AT91_DDRSDRC_MDR) &
+ AT91_DDRSDRC_MD;
+ if (ddr_type != AT91_DDRSDRC_MD_LPDDR2 &&
+ ddr_type != AT91_DDRSDRC_MD_LPDDR3) {
+ iounmap(at91_shdwc.mpddrc_base);
+ at91_shdwc.mpddrc_base = NULL;
+ }
+ }
- ddr_type = readl(mpddrc_base + AT91_DDRSDRC_MDR) & AT91_DDRSDRC_MD;
- if ((ddr_type == AT91_DDRSDRC_MD_LPDDR2) ||
- (ddr_type == AT91_DDRSDRC_MD_LPDDR3))
- pm_power_off = at91_lpddr_poweroff;
- else
- iounmap(mpddrc_base);
+ pm_power_off = at91_poweroff;
return 0;
+
+clk_disable:
+ clk_disable_unprepare(at91_shdwc.sclk);
+ return ret;
}
static int __exit at91_poweroff_remove(struct platform_device *pdev)
{
- if (pm_power_off == at91_poweroff ||
- pm_power_off == at91_lpddr_poweroff)
+ if (pm_power_off == at91_poweroff)
pm_power_off = NULL;
- clk_disable_unprepare(sclk);
+ if (at91_shdwc.mpddrc_base)
+ iounmap(at91_shdwc.mpddrc_base);
+
+ clk_disable_unprepare(at91_shdwc.sclk);
return 0;
}
-static const struct of_device_id at91_ramc_of_match[] = {
- { .compatible = "atmel,sama5d3-ddramc", },
- { /* sentinel */ }
-};
-
static const struct of_device_id at91_poweroff_of_match[] = {
{ .compatible = "atmel,at91sam9260-shdwc", },
{ .compatible = "atmel,at91sam9rl-shdwc", },
*/
static struct gpio_desc *reset_gpio;
static u32 timeout = DEFAULT_TIMEOUT_MS;
+static u32 active_delay = 100;
+static u32 inactive_delay = 100;
static void gpio_poweroff_do_poweroff(void)
{
/* drive it active, also inactive->active edge */
gpiod_direction_output(reset_gpio, 1);
- mdelay(100);
+ mdelay(active_delay);
+
/* drive inactive, also active->inactive edge */
gpiod_set_value_cansleep(reset_gpio, 0);
- mdelay(100);
+ mdelay(inactive_delay);
/* drive it active, also inactive->active edge */
gpiod_set_value_cansleep(reset_gpio, 1);
else
flags = GPIOD_OUT_LOW;
+ device_property_read_u32(&pdev->dev, "active-delay-ms", &active_delay);
+ device_property_read_u32(&pdev->dev, "inactive-delay-ms",
+ &inactive_delay);
device_property_read_u32(&pdev->dev, "timeout-ms", &timeout);
reset_gpio = devm_gpiod_get(&pdev->dev, NULL, flags);
#define SOFT_CHIP_RST BIT(0)
+#define ICPU_CFG_CPU_SYSTEM_CTRL_GENERAL_CTRL 0x24
+#define IF_SI_OWNER_MASK GENMASK(1, 0)
+#define IF_SI_OWNER_SISL 0
+#define IF_SI_OWNER_SIBM 1
+#define IF_SI_OWNER_SIMC 2
+#define IF_SI_OWNER_OFFSET 4
+
static int ocelot_restart_handle(struct notifier_block *this,
unsigned long mode, void *cmd)
{
regmap_update_bits(ctx->cpu_ctrl, ICPU_CFG_CPU_SYSTEM_CTRL_RESET,
CORE_RST_PROTECT, 0);
+ /* Make the SI back to boot mode */
+ regmap_update_bits(ctx->cpu_ctrl, ICPU_CFG_CPU_SYSTEM_CTRL_GENERAL_CTRL,
+ IF_SI_OWNER_MASK << IF_SI_OWNER_OFFSET,
+ IF_SI_OWNER_SIBM << IF_SI_OWNER_OFFSET);
+
writel(SOFT_CHIP_RST, ctx->base);
pr_emerg("Unable to restart system\n");
Say Y here to enable support for battery charging with SC2731
PMIC chips.
+config FUEL_GAUGE_SC27XX
+ tristate "Spreadtrum SC27XX fuel gauge driver"
+ depends on MFD_SC27XX_PMIC || COMPILE_TEST
+ depends on IIO
+ help
+ Say Y here to enable support for fuel gauge with SC27XX
+ PMIC chips.
+
endif # POWER_SUPPLY
obj-$(CONFIG_AXP288_CHARGER) += axp288_charger.o
obj-$(CONFIG_CHARGER_CROS_USBPD) += cros_usbpd-charger.o
obj-$(CONFIG_CHARGER_SC2731) += sc2731_charger.o
+obj-$(CONFIG_FUEL_GAUGE_SC27XX) += sc27xx_fuel_gauge.o
#define AXP20X_PWR_STATUS_ACIN_PRESENT BIT(7)
#define AXP20X_PWR_STATUS_ACIN_AVAIL BIT(6)
+#define AXP813_VHOLD_MASK GENMASK(5, 3)
+#define AXP813_VHOLD_UV_TO_BIT(x) ((((x) / 100000) - 40) << 3)
+#define AXP813_VHOLD_REG_TO_UV(x) \
+ (((((x) & AXP813_VHOLD_MASK) >> 3) + 40) * 100000)
+
+#define AXP813_CURR_LIMIT_MASK GENMASK(2, 0)
+#define AXP813_CURR_LIMIT_UA_TO_BIT(x) (((x) / 500000) - 3)
+#define AXP813_CURR_LIMIT_REG_TO_UA(x) \
+ ((((x) & AXP813_CURR_LIMIT_MASK) + 3) * 500000)
+
#define DRVNAME "axp20x-ac-power-supply"
struct axp20x_ac_power {
return 0;
+ case POWER_SUPPLY_PROP_VOLTAGE_MIN:
+ ret = regmap_read(power->regmap, AXP813_ACIN_PATH_CTRL, ®);
+ if (ret)
+ return ret;
+
+ val->intval = AXP813_VHOLD_REG_TO_UV(reg);
+
+ return 0;
+
+ case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT:
+ ret = regmap_read(power->regmap, AXP813_ACIN_PATH_CTRL, ®);
+ if (ret)
+ return ret;
+
+ val->intval = AXP813_CURR_LIMIT_REG_TO_UA(reg);
+ /* AXP813 datasheet defines values 11x as 4000mA */
+ if (val->intval > 4000000)
+ val->intval = 4000000;
+
+ return 0;
+
+ default:
+ return -EINVAL;
+ }
+
+ return -EINVAL;
+}
+
+static int axp813_ac_power_set_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ const union power_supply_propval *val)
+{
+ struct axp20x_ac_power *power = power_supply_get_drvdata(psy);
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_VOLTAGE_MIN:
+ if (val->intval < 4000000 || val->intval > 4700000)
+ return -EINVAL;
+
+ return regmap_update_bits(power->regmap, AXP813_ACIN_PATH_CTRL,
+ AXP813_VHOLD_MASK,
+ AXP813_VHOLD_UV_TO_BIT(val->intval));
+
+ case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT:
+ if (val->intval < 1500000 || val->intval > 4000000)
+ return -EINVAL;
+
+ return regmap_update_bits(power->regmap, AXP813_ACIN_PATH_CTRL,
+ AXP813_CURR_LIMIT_MASK,
+ AXP813_CURR_LIMIT_UA_TO_BIT(val->intval));
+
default:
return -EINVAL;
}
return -EINVAL;
}
+static int axp813_ac_power_prop_writeable(struct power_supply *psy,
+ enum power_supply_property psp)
+{
+ return psp == POWER_SUPPLY_PROP_VOLTAGE_MIN ||
+ psp == POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT;
+}
+
static enum power_supply_property axp20x_ac_power_properties[] = {
POWER_SUPPLY_PROP_HEALTH,
POWER_SUPPLY_PROP_PRESENT,
POWER_SUPPLY_PROP_ONLINE,
};
+static enum power_supply_property axp813_ac_power_properties[] = {
+ POWER_SUPPLY_PROP_HEALTH,
+ POWER_SUPPLY_PROP_PRESENT,
+ POWER_SUPPLY_PROP_ONLINE,
+ POWER_SUPPLY_PROP_VOLTAGE_MIN,
+ POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT,
+};
+
static const struct power_supply_desc axp20x_ac_power_desc = {
.name = "axp20x-ac",
.type = POWER_SUPPLY_TYPE_MAINS,
.get_property = axp20x_ac_power_get_property,
};
+static const struct power_supply_desc axp813_ac_power_desc = {
+ .name = "axp813-ac",
+ .type = POWER_SUPPLY_TYPE_MAINS,
+ .properties = axp813_ac_power_properties,
+ .num_properties = ARRAY_SIZE(axp813_ac_power_properties),
+ .property_is_writeable = axp813_ac_power_prop_writeable,
+ .get_property = axp20x_ac_power_get_property,
+ .set_property = axp813_ac_power_set_property,
+};
+
struct axp_data {
const struct power_supply_desc *power_desc;
bool acin_adc;
.acin_adc = false,
};
+static const struct axp_data axp813_data = {
+ .power_desc = &axp813_ac_power_desc,
+ .acin_adc = false,
+};
+
static int axp20x_ac_power_probe(struct platform_device *pdev)
{
struct axp20x_dev *axp20x = dev_get_drvdata(pdev->dev.parent);
}, {
.compatible = "x-powers,axp221-ac-power-supply",
.data = &axp22x_data,
+ }, {
+ .compatible = "x-powers,axp813-ac-power-supply",
+ .data = &axp813_data,
}, { /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, axp20x_ac_power_match);
* option) any later version.
*/
+#include <linux/bitops.h>
#include <linux/device.h>
#include <linux/init.h>
#include <linux/interrupt.h>
*/
#include <linux/acpi.h>
+#include <linux/bitops.h>
#include <linux/module.h>
#include <linux/device.h>
#include <linux/regmap.h>
#include <linux/mfd/axp20x.h>
#include <linux/extcon.h>
-#define PS_STAT_VBUS_TRIGGER (1 << 0)
-#define PS_STAT_BAT_CHRG_DIR (1 << 2)
-#define PS_STAT_VBAT_ABOVE_VHOLD (1 << 3)
-#define PS_STAT_VBUS_VALID (1 << 4)
-#define PS_STAT_VBUS_PRESENT (1 << 5)
+#define PS_STAT_VBUS_TRIGGER BIT(0)
+#define PS_STAT_BAT_CHRG_DIR BIT(2)
+#define PS_STAT_VBAT_ABOVE_VHOLD BIT(3)
+#define PS_STAT_VBUS_VALID BIT(4)
+#define PS_STAT_VBUS_PRESENT BIT(5)
-#define CHRG_STAT_BAT_SAFE_MODE (1 << 3)
-#define CHRG_STAT_BAT_VALID (1 << 4)
-#define CHRG_STAT_BAT_PRESENT (1 << 5)
-#define CHRG_STAT_CHARGING (1 << 6)
-#define CHRG_STAT_PMIC_OTP (1 << 7)
+#define CHRG_STAT_BAT_SAFE_MODE BIT(3)
+#define CHRG_STAT_BAT_VALID BIT(4)
+#define CHRG_STAT_BAT_PRESENT BIT(5)
+#define CHRG_STAT_CHARGING BIT(6)
+#define CHRG_STAT_PMIC_OTP BIT(7)
#define VBUS_ISPOUT_CUR_LIM_MASK 0x03
#define VBUS_ISPOUT_CUR_LIM_BIT_POS 0
#define VBUS_ISPOUT_VHOLD_SET_OFFSET 4000 /* 4000mV */
#define VBUS_ISPOUT_VHOLD_SET_LSB_RES 100 /* 100mV */
#define VBUS_ISPOUT_VHOLD_SET_4300MV 0x3 /* 4300mV */
-#define VBUS_ISPOUT_VBUS_PATH_DIS (1 << 7)
+#define VBUS_ISPOUT_VBUS_PATH_DIS BIT(7)
#define CHRG_CCCV_CC_MASK 0xf /* 4 bits */
#define CHRG_CCCV_CC_BIT_POS 0
#define CHRG_CCCV_CC_OFFSET 200 /* 200mA */
#define CHRG_CCCV_CC_LSB_RES 200 /* 200mA */
-#define CHRG_CCCV_ITERM_20P (1 << 4) /* 20% of CC */
+#define CHRG_CCCV_ITERM_20P BIT(4) /* 20% of CC */
#define CHRG_CCCV_CV_MASK 0x60 /* 2 bits */
#define CHRG_CCCV_CV_BIT_POS 5
#define CHRG_CCCV_CV_4100MV 0x0 /* 4.10V */
#define CHRG_CCCV_CV_4150MV 0x1 /* 4.15V */
#define CHRG_CCCV_CV_4200MV 0x2 /* 4.20V */
#define CHRG_CCCV_CV_4350MV 0x3 /* 4.35V */
-#define CHRG_CCCV_CHG_EN (1 << 7)
+#define CHRG_CCCV_CHG_EN BIT(7)
#define CNTL2_CC_TIMEOUT_MASK 0x3 /* 2 bits */
#define CNTL2_CC_TIMEOUT_OFFSET 6 /* 6 Hrs */
#define CNTL2_CC_TIMEOUT_LSB_RES 2 /* 2 Hrs */
#define CNTL2_CC_TIMEOUT_12HRS 0x3 /* 12 Hrs */
-#define CNTL2_CHGLED_TYPEB (1 << 4)
-#define CNTL2_CHG_OUT_TURNON (1 << 5)
+#define CNTL2_CHGLED_TYPEB BIT(4)
+#define CNTL2_CHG_OUT_TURNON BIT(5)
#define CNTL2_PC_TIMEOUT_MASK 0xC0
#define CNTL2_PC_TIMEOUT_OFFSET 40 /* 40 mins */
#define CNTL2_PC_TIMEOUT_LSB_RES 10 /* 10 mins */
#define CNTL2_PC_TIMEOUT_70MINS 0x3
-#define CHRG_ILIM_TEMP_LOOP_EN (1 << 3)
+#define CHRG_ILIM_TEMP_LOOP_EN BIT(3)
#define CHRG_VBUS_ILIM_MASK 0xf0
#define CHRG_VBUS_ILIM_BIT_POS 4
#define CHRG_VBUS_ILIM_100MA 0x0 /* 100mA */
#define CHRG_VLTFC_0C 0xA5 /* 0 DegC */
#define CHRG_VHTFC_45C 0x1F /* 45 DegC */
-#define FG_CNTL_OCV_ADJ_EN (1 << 3)
+#define FG_CNTL_OCV_ADJ_EN BIT(3)
#define CV_4100MV 4100 /* 4100mV */
#define CV_4150MV 4150 /* 4150mV */
return 0;
}
-static int bq2415x_power_supply_init(struct bq2415x_device *bq)
-{
- int ret;
- int chip;
- char revstr[8];
- struct power_supply_config psy_cfg = {
- .drv_data = bq,
- .of_node = bq->dev->of_node,
- };
-
- bq->charger_desc.name = bq->name;
- bq->charger_desc.type = POWER_SUPPLY_TYPE_USB;
- bq->charger_desc.properties = bq2415x_power_supply_props;
- bq->charger_desc.num_properties =
- ARRAY_SIZE(bq2415x_power_supply_props);
- bq->charger_desc.get_property = bq2415x_power_supply_get_property;
-
- ret = bq2415x_detect_chip(bq);
- if (ret < 0)
- chip = BQUNKNOWN;
- else
- chip = ret;
-
- ret = bq2415x_detect_revision(bq);
- if (ret < 0)
- strcpy(revstr, "unknown");
- else
- sprintf(revstr, "1.%d", ret);
-
- bq->model = kasprintf(GFP_KERNEL,
- "chip %s, revision %s, vender code %.3d",
- bq2415x_chip_name[chip], revstr,
- bq2415x_get_vender_code(bq));
- if (!bq->model) {
- dev_err(bq->dev, "failed to allocate model name\n");
- return -ENOMEM;
- }
-
- bq->charger = power_supply_register(bq->dev, &bq->charger_desc,
- &psy_cfg);
- if (IS_ERR(bq->charger)) {
- kfree(bq->model);
- return PTR_ERR(bq->charger);
- }
-
- return 0;
-}
-
static void bq2415x_power_supply_exit(struct bq2415x_device *bq)
{
bq->autotimer = 0;
static DEVICE_ATTR(boost_status, S_IRUGO, bq2415x_sysfs_show_status, NULL);
static DEVICE_ATTR(fault_status, S_IRUGO, bq2415x_sysfs_show_status, NULL);
-static struct attribute *bq2415x_sysfs_attributes[] = {
+static struct attribute *bq2415x_sysfs_attrs[] = {
/*
* TODO: some (appropriate) of these attrs should be switched to
* use power supply class props.
NULL,
};
-static const struct attribute_group bq2415x_sysfs_attr_group = {
- .attrs = bq2415x_sysfs_attributes,
-};
+ATTRIBUTE_GROUPS(bq2415x_sysfs);
-static int bq2415x_sysfs_init(struct bq2415x_device *bq)
+static int bq2415x_power_supply_init(struct bq2415x_device *bq)
{
- return sysfs_create_group(&bq->charger->dev.kobj,
- &bq2415x_sysfs_attr_group);
-}
+ int ret;
+ int chip;
+ char revstr[8];
+ struct power_supply_config psy_cfg = {
+ .drv_data = bq,
+ .of_node = bq->dev->of_node,
+ .attr_grp = bq2415x_sysfs_groups,
+ };
-static void bq2415x_sysfs_exit(struct bq2415x_device *bq)
-{
- sysfs_remove_group(&bq->charger->dev.kobj, &bq2415x_sysfs_attr_group);
+ bq->charger_desc.name = bq->name;
+ bq->charger_desc.type = POWER_SUPPLY_TYPE_USB;
+ bq->charger_desc.properties = bq2415x_power_supply_props;
+ bq->charger_desc.num_properties =
+ ARRAY_SIZE(bq2415x_power_supply_props);
+ bq->charger_desc.get_property = bq2415x_power_supply_get_property;
+
+ ret = bq2415x_detect_chip(bq);
+ if (ret < 0)
+ chip = BQUNKNOWN;
+ else
+ chip = ret;
+
+ ret = bq2415x_detect_revision(bq);
+ if (ret < 0)
+ strcpy(revstr, "unknown");
+ else
+ sprintf(revstr, "1.%d", ret);
+
+ bq->model = kasprintf(GFP_KERNEL,
+ "chip %s, revision %s, vender code %.3d",
+ bq2415x_chip_name[chip], revstr,
+ bq2415x_get_vender_code(bq));
+ if (!bq->model) {
+ dev_err(bq->dev, "failed to allocate model name\n");
+ return -ENOMEM;
+ }
+
+ bq->charger = power_supply_register(bq->dev, &bq->charger_desc,
+ &psy_cfg);
+ if (IS_ERR(bq->charger)) {
+ kfree(bq->model);
+ return PTR_ERR(bq->charger);
+ }
+
+ return 0;
}
/* main bq2415x probe function */
goto error_2;
}
- ret = bq2415x_sysfs_init(bq);
- if (ret) {
- dev_err(bq->dev, "failed to create sysfs entries: %d\n", ret);
- goto error_3;
- }
-
ret = bq2415x_set_defaults(bq);
if (ret) {
dev_err(bq->dev, "failed to set default values: %d\n", ret);
- goto error_4;
+ goto error_3;
}
if (bq->notify_node || bq->init_data.notify_device) {
ret = power_supply_reg_notifier(&bq->nb);
if (ret) {
dev_err(bq->dev, "failed to reg notifier: %d\n", ret);
- goto error_4;
+ goto error_3;
}
bq->automode = 1;
dev_info(bq->dev, "driver registered\n");
return 0;
-error_4:
- bq2415x_sysfs_exit(bq);
error_3:
bq2415x_power_supply_exit(bq);
error_2:
power_supply_unreg_notifier(&bq->nb);
of_node_put(bq->notify_node);
- bq2415x_sysfs_exit(bq);
bq2415x_power_supply_exit(bq);
bq2415x_reset_chip(bq);
#include <linux/workqueue.h>
#include <linux/gpio.h>
#include <linux/i2c.h>
+#include <linux/extcon-provider.h>
#define BQ24190_MANUFACTURER "Texas Instruments"
#define BQ24190_REG_VPRS_PN_MASK (BIT(5) | BIT(4) | BIT(3))
#define BQ24190_REG_VPRS_PN_SHIFT 3
#define BQ24190_REG_VPRS_PN_24190 0x4
-#define BQ24190_REG_VPRS_PN_24192 0x5 /* Also 24193 */
+#define BQ24190_REG_VPRS_PN_24192 0x5 /* Also 24193, 24196 */
#define BQ24190_REG_VPRS_PN_24192I 0x3
#define BQ24190_REG_VPRS_TS_PROFILE_MASK BIT(2)
#define BQ24190_REG_VPRS_TS_PROFILE_SHIFT 2
struct bq24190_dev_info {
struct i2c_client *client;
struct device *dev;
+ struct extcon_dev *edev;
struct power_supply *charger;
struct power_supply *battery;
struct delayed_work input_current_limit_work;
u8 watchdog;
};
+static const unsigned int bq24190_usb_extcon_cable[] = {
+ EXTCON_USB,
+ EXTCON_NONE,
+};
+
/*
* The tables below provide a 2-way mapping for the value that goes in
* the register field and the real-world value that it represents.
static struct attribute *
bq24190_sysfs_attrs[ARRAY_SIZE(bq24190_sysfs_field_tbl) + 1];
-static const struct attribute_group bq24190_sysfs_attr_group = {
- .attrs = bq24190_sysfs_attrs,
-};
+ATTRIBUTE_GROUPS(bq24190_sysfs);
static void bq24190_sysfs_init_attrs(void)
{
return count;
}
-
-static int bq24190_sysfs_create_group(struct bq24190_dev_info *bdi)
-{
- bq24190_sysfs_init_attrs();
-
- return sysfs_create_group(&bdi->charger->dev.kobj,
- &bq24190_sysfs_attr_group);
-}
-
-static void bq24190_sysfs_remove_group(struct bq24190_dev_info *bdi)
-{
- sysfs_remove_group(&bdi->charger->dev.kobj, &bq24190_sysfs_attr_group);
-}
-#else
-static int bq24190_sysfs_create_group(struct bq24190_dev_info *bdi)
-{
- return 0;
-}
-
-static inline void bq24190_sysfs_remove_group(struct bq24190_dev_info *bdi) {}
#endif
#ifdef CONFIG_REGULATOR
static const struct regulator_desc bq24190_vbus_desc = {
.name = "usb_otg_vbus",
+ .of_match = "usb-otg-vbus",
.type = REGULATOR_VOLTAGE,
.owner = THIS_MODULE,
.ops = &bq24190_vbus_ops,
.property_is_writeable = bq24190_battery_property_is_writeable,
};
+static int bq24190_configure_usb_otg(struct bq24190_dev_info *bdi, u8 ss_reg)
+{
+ bool otg_enabled;
+ int ret;
+
+ otg_enabled = !!(ss_reg & BQ24190_REG_SS_VBUS_STAT_MASK);
+ ret = extcon_set_state_sync(bdi->edev, EXTCON_USB, otg_enabled);
+ if (ret < 0)
+ dev_err(bdi->dev, "Can't set extcon state to %d: %d\n",
+ otg_enabled, ret);
+
+ return ret;
+}
+
static void bq24190_check_status(struct bq24190_dev_info *bdi)
{
const u8 battery_mask_ss = BQ24190_REG_SS_CHRG_STAT_MASK;
bdi->ss_reg = ss_reg;
}
- if (alert_charger || alert_battery)
+ if (alert_charger || alert_battery) {
power_supply_changed(bdi->charger);
+ bq24190_configure_usb_otg(bdi, ss_reg);
+ }
if (alert_battery && bdi->battery)
power_supply_changed(bdi->battery);
if (ret < 0)
return ret;
- if (v != BQ24190_REG_VPRS_PN_24190 &&
- v != BQ24190_REG_VPRS_PN_24192I) {
+ switch (v) {
+ case BQ24190_REG_VPRS_PN_24190:
+ case BQ24190_REG_VPRS_PN_24192:
+ case BQ24190_REG_VPRS_PN_24192I:
+ break;
+ default:
dev_err(bdi->dev, "Error unknown model: 0x%02x\n", v);
return -ENODEV;
}
return -EINVAL;
}
+ bdi->edev = devm_extcon_dev_allocate(dev, bq24190_usb_extcon_cable);
+ if (IS_ERR(bdi->edev))
+ return PTR_ERR(bdi->edev);
+
+ ret = devm_extcon_dev_register(dev, bdi->edev);
+ if (ret < 0)
+ return ret;
+
pm_runtime_enable(dev);
pm_runtime_use_autosuspend(dev);
pm_runtime_set_autosuspend_delay(dev, 600);
goto out_pmrt;
}
+#ifdef CONFIG_SYSFS
+ bq24190_sysfs_init_attrs();
+ charger_cfg.attr_grp = bq24190_sysfs_groups;
+#endif
+
charger_cfg.drv_data = bdi;
charger_cfg.of_node = dev->of_node;
charger_cfg.supplied_to = bq24190_charger_supplied_to;
goto out_charger;
}
- ret = bq24190_sysfs_create_group(bdi);
- if (ret < 0) {
- dev_err(dev, "Can't create sysfs entries\n");
+ ret = bq24190_configure_usb_otg(bdi, bdi->ss_reg);
+ if (ret < 0)
goto out_charger;
- }
bdi->initialized = true;
"bq24190-charger", bdi);
if (ret < 0) {
dev_err(dev, "Can't set up irq handler\n");
- goto out_sysfs;
+ goto out_charger;
}
ret = bq24190_register_vbus_regulator(bdi);
if (ret < 0)
- goto out_sysfs;
+ goto out_charger;
enable_irq_wake(client->irq);
return 0;
-out_sysfs:
- bq24190_sysfs_remove_group(bdi);
-
out_charger:
if (!IS_ERR_OR_NULL(bdi->battery))
power_supply_unregister(bdi->battery);
}
bq24190_register_reset(bdi);
- bq24190_sysfs_remove_group(bdi);
if (bdi->battery)
power_supply_unregister(bdi->battery);
power_supply_unregister(bdi->charger);
static const struct i2c_device_id bq24190_i2c_ids[] = {
{ "bq24190" },
+ { "bq24192" },
{ "bq24192i" },
+ { "bq24196" },
{ },
};
MODULE_DEVICE_TABLE(i2c, bq24190_i2c_ids);
#ifdef CONFIG_OF
static const struct of_device_id bq24190_of_match[] = {
{ .compatible = "ti,bq24190", },
+ { .compatible = "ti,bq24192", },
{ .compatible = "ti,bq24192i", },
+ { .compatible = "ti,bq24196", },
{ },
};
MODULE_DEVICE_TABLE(of, bq24190_of_match);
static DEVICE_ATTR(sysoff_enable, S_IWUSR | S_IRUGO,
bq24257_sysfs_show_enable, bq24257_sysfs_set_enable);
-static struct attribute *bq24257_charger_attr[] = {
+static struct attribute *bq24257_charger_sysfs_attrs[] = {
&dev_attr_ovp_voltage.attr,
&dev_attr_in_dpm_voltage.attr,
&dev_attr_high_impedance_enable.attr,
NULL,
};
-static const struct attribute_group bq24257_attr_group = {
- .attrs = bq24257_charger_attr,
-};
+ATTRIBUTE_GROUPS(bq24257_charger_sysfs);
static int bq24257_power_supply_init(struct bq24257_device *bq)
{
struct power_supply_config psy_cfg = { .drv_data = bq, };
+ psy_cfg.attr_grp = bq24257_charger_sysfs_groups;
psy_cfg.supplied_to = bq24257_charger_supplied_to;
psy_cfg.num_supplicants = ARRAY_SIZE(bq24257_charger_supplied_to);
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;
}
if (bq->iilimit_autoset_enable)
cancel_delayed_work_sync(&bq->iilimit_setup_work);
- sysfs_remove_group(&bq->charger->dev.kobj, &bq24257_attr_group);
-
bq24257_field_write(bq, F_RESET, 1); /* reset to defaults */
return 0;
[F_CHG_TMR] = REG_FIELD(0x07, 1, 2),
[F_JEITA_ISET] = REG_FIELD(0x07, 0, 0),
/* REG08 */
- [F_BATCMP] = REG_FIELD(0x08, 6, 7), // 5-7 on BQ25896
+ [F_BATCMP] = REG_FIELD(0x08, 5, 7),
[F_VCLAMP] = REG_FIELD(0x08, 2, 4),
[F_TREG] = REG_FIELD(0x08, 0, 1),
/* REG09 */
int err = 0, i;
struct charger_desc *desc = cm->desc;
- /* Ignore if it's redundent command */
+ /* Ignore if it's redundant command */
if (enable == cm->charger_enabled)
return 0;
if (ret < 0) {
pr_info("Cannot register extcon_dev for %s(cable: %s)\n",
cable->extcon_name, cable->name);
- ret = -EINVAL;
}
return ret;
}
/**
- * charger_manager_register_sysfs - Register sysfs entry for each charger
+ * charger_manager_prepare_sysfs - Prepare sysfs entry for each charger
* @cm: the Charger Manager representing the battery.
*
* This function add sysfs entry for charger(regulator) to control charger from
* externally_control, this charger isn't controlled from charger-manager and
* always stay off state of regulator.
*/
-static int charger_manager_register_sysfs(struct charger_manager *cm)
+static int charger_manager_prepare_sysfs(struct charger_manager *cm)
{
struct charger_desc *desc = cm->desc;
struct charger_regulator *charger;
int chargers_externally_control = 1;
- char buf[11];
- char *str;
- int ret;
+ char *name;
int i;
/* Create sysfs entry to control charger(regulator) */
for (i = 0; i < desc->num_charger_regulators; i++) {
charger = &desc->charger_regulators[i];
- snprintf(buf, 10, "charger.%d", i);
- str = devm_kzalloc(cm->dev,
- strlen(buf) + 1, GFP_KERNEL);
- if (!str)
+ name = devm_kasprintf(cm->dev, GFP_KERNEL, "charger.%d", i);
+ if (!name)
return -ENOMEM;
- strcpy(str, buf);
-
charger->attrs[0] = &charger->attr_name.attr;
charger->attrs[1] = &charger->attr_state.attr;
charger->attrs[2] = &charger->attr_externally_control.attr;
charger->attrs[3] = NULL;
- charger->attr_g.name = str;
- charger->attr_g.attrs = charger->attrs;
+
+ charger->attr_grp.name = name;
+ charger->attr_grp.attrs = charger->attrs;
+ desc->sysfs_groups[i] = &charger->attr_grp;
sysfs_attr_init(&charger->attr_name.attr);
charger->attr_name.attr.name = "name";
dev_info(cm->dev, "'%s' regulator's externally_control is %d\n",
charger->regulator_name, charger->externally_control);
-
- ret = sysfs_create_group(&cm->charger_psy->dev.kobj,
- &charger->attr_g);
- if (ret < 0) {
- dev_err(cm->dev, "Cannot create sysfs entry of %s regulator\n",
- charger->regulator_name);
- return ret;
- }
}
if (chargers_externally_control) {
/* chargers */
of_property_read_u32(np, "cm-num-chargers", &num_chgs);
if (num_chgs) {
+ int i;
+
/* Allocate empty bin at the tail of array */
desc->psy_charger_stat = devm_kcalloc(dev,
num_chgs + 1,
sizeof(char *),
GFP_KERNEL);
- if (desc->psy_charger_stat) {
- int i;
- for (i = 0; i < num_chgs; i++)
- of_property_read_string_index(np, "cm-chargers",
- i, &desc->psy_charger_stat[i]);
- } else {
+ if (!desc->psy_charger_stat)
return ERR_PTR(-ENOMEM);
- }
+
+ for (i = 0; i < num_chgs; i++)
+ of_property_read_string_index(np, "cm-chargers",
+ i, &desc->psy_charger_stat[i]);
}
of_property_read_string(np, "cm-fuel-gauge", &desc->psy_fuel_gauge);
desc->charger_regulators = chg_regs;
+ desc->sysfs_groups = devm_kcalloc(dev,
+ desc->num_charger_regulators + 1,
+ sizeof(*desc->sysfs_groups),
+ GFP_KERNEL);
+ if (!desc->sysfs_groups)
+ return ERR_PTR(-ENOMEM);
+
for_each_child_of_node(np, child) {
struct charger_cable *cables;
struct device_node *_child;
if (IS_ERR(desc)) {
dev_err(&pdev->dev, "No platform data (desc) found\n");
- return -ENODEV;
+ return PTR_ERR(desc);
}
cm = devm_kzalloc(&pdev->dev, sizeof(*cm), GFP_KERNEL);
return -EINVAL;
}
- /* Counting index only */
- while (desc->psy_charger_stat[i])
- i++;
-
/* Check if charger's supplies are present at probe */
for (i = 0; desc->psy_charger_stat[i]; i++) {
struct power_supply *psy;
INIT_DELAYED_WORK(&cm->fullbatt_vchk_work, fullbatt_vchk);
+ /* Register sysfs entry for charger(regulator) */
+ ret = charger_manager_prepare_sysfs(cm);
+ if (ret < 0) {
+ dev_err(&pdev->dev,
+ "Cannot prepare sysfs entry of regulators\n");
+ return ret;
+ }
+ psy_cfg.attr_grp = desc->sysfs_groups;
+
cm->charger_psy = power_supply_register(&pdev->dev,
&cm->charger_psy_desc,
&psy_cfg);
goto err_reg_extcon;
}
- /* Register sysfs entry for charger(regulator) */
- ret = charger_manager_register_sysfs(cm);
- if (ret < 0) {
- dev_err(&pdev->dev,
- "Cannot initialize sysfs entry of regulator\n");
- goto err_reg_sysfs;
- }
-
/* Add to the list */
mutex_lock(&cm_list_mtx);
list_add(&cm->entry, &cm_list);
/*
* Charger-manager is capable of waking up the systme from sleep
- * when event is happend through cm_notify_event()
+ * when event is happened through cm_notify_event()
*/
device_init_wakeup(&pdev->dev, true);
device_set_wakeup_capable(&pdev->dev, false);
return 0;
-err_reg_sysfs:
- for (i = 0; i < desc->num_charger_regulators; i++) {
- struct charger_regulator *charger;
-
- charger = &desc->charger_regulators[i];
- sysfs_remove_group(&cm->charger_psy->dev.kobj,
- &charger->attr_g);
- }
err_reg_extcon:
for (i = 0; i < desc->num_charger_regulators; i++) {
struct charger_regulator *charger;
* cm_notify_event - charger driver notify Charger Manager of charger event
* @psy: pointer to instance of charger's power_supply
* @type: type of charger event
- * @msg: optional message passed to uevent_notify fuction
+ * @msg: optional message passed to uevent_notify function
*/
void cm_notify_event(struct power_supply *psy, enum cm_event_types type,
char *msg)
static int cpcap_battery_init_interrupts(struct platform_device *pdev,
struct cpcap_battery_ddata *ddata)
{
- const char * const cpcap_battery_irqs[] = {
+ static const char * const cpcap_battery_irqs[] = {
"eol", "lowbph", "lowbpl",
"chrgcurr1", "battdetb"
};
if (IS_ERR(ddata->gpio[i])) {
dev_info(ddata->dev, "no mode change GPIO%i: %li\n",
i, PTR_ERR(ddata->gpio[i]));
- ddata->gpio[i] = NULL;
+ ddata->gpio[i] = NULL;
}
}
}
return count;
}
-static const struct bin_attribute ds2780_param_eeprom_bin_attr = {
+static struct bin_attribute ds2780_param_eeprom_bin_attr = {
.attr = {
.name = "param_eeprom",
.mode = S_IRUGO | S_IWUSR,
return count;
}
-static const struct bin_attribute ds2780_user_eeprom_bin_attr = {
+static struct bin_attribute ds2780_user_eeprom_bin_attr = {
.attr = {
.name = "user_eeprom",
.mode = S_IRUGO | S_IWUSR,
static DEVICE_ATTR(pio_pin, S_IRUGO | S_IWUSR, ds2780_get_pio_pin,
ds2780_set_pio_pin);
-
-static struct attribute *ds2780_attributes[] = {
+static struct attribute *ds2780_sysfs_attrs[] = {
&dev_attr_pmod_enabled.attr,
&dev_attr_sense_resistor_value.attr,
&dev_attr_rsgain_setting.attr,
NULL
};
-static const struct attribute_group ds2780_attr_group = {
- .attrs = ds2780_attributes,
+static struct bin_attribute *ds2780_sysfs_bin_attrs[] = {
+ &ds2780_param_eeprom_bin_attr,
+ &ds2780_user_eeprom_bin_attr,
+ NULL
+};
+
+static const struct attribute_group ds2780_sysfs_group = {
+ .attrs = ds2780_sysfs_attrs,
+ .bin_attrs = ds2780_sysfs_bin_attrs,
+};
+
+static const struct attribute_group *ds2780_sysfs_groups[] = {
+ &ds2780_sysfs_group,
+ NULL,
};
static int ds2780_battery_probe(struct platform_device *pdev)
{
struct power_supply_config psy_cfg = {};
- int ret = 0;
struct ds2780_device_info *dev_info;
dev_info = devm_kzalloc(&pdev->dev, sizeof(*dev_info), GFP_KERNEL);
- if (!dev_info) {
- ret = -ENOMEM;
- goto fail;
- }
+ if (!dev_info)
+ return -ENOMEM;
platform_set_drvdata(pdev, dev_info);
dev_info->bat_desc.get_property = ds2780_battery_get_property;
psy_cfg.drv_data = dev_info;
+ psy_cfg.attr_grp = ds2780_sysfs_groups;
- dev_info->bat = power_supply_register(&pdev->dev, &dev_info->bat_desc,
- &psy_cfg);
+ dev_info->bat = devm_power_supply_register(&pdev->dev,
+ &dev_info->bat_desc,
+ &psy_cfg);
if (IS_ERR(dev_info->bat)) {
dev_err(dev_info->dev, "failed to register battery\n");
- ret = PTR_ERR(dev_info->bat);
- goto fail;
- }
-
- ret = sysfs_create_group(&dev_info->bat->dev.kobj, &ds2780_attr_group);
- if (ret) {
- dev_err(dev_info->dev, "failed to create sysfs group\n");
- goto fail_unregister;
+ return PTR_ERR(dev_info->bat);
}
- ret = sysfs_create_bin_file(&dev_info->bat->dev.kobj,
- &ds2780_param_eeprom_bin_attr);
- if (ret) {
- dev_err(dev_info->dev,
- "failed to create param eeprom bin file");
- goto fail_remove_group;
- }
-
- ret = sysfs_create_bin_file(&dev_info->bat->dev.kobj,
- &ds2780_user_eeprom_bin_attr);
- if (ret) {
- dev_err(dev_info->dev,
- "failed to create user eeprom bin file");
- goto fail_remove_bin_file;
- }
-
- return 0;
-
-fail_remove_bin_file:
- sysfs_remove_bin_file(&dev_info->bat->dev.kobj,
- &ds2780_param_eeprom_bin_attr);
-fail_remove_group:
- sysfs_remove_group(&dev_info->bat->dev.kobj, &ds2780_attr_group);
-fail_unregister:
- power_supply_unregister(dev_info->bat);
-fail:
- return ret;
-}
-
-static int ds2780_battery_remove(struct platform_device *pdev)
-{
- struct ds2780_device_info *dev_info = platform_get_drvdata(pdev);
-
- /*
- * Remove attributes before unregistering power supply
- * because 'bat' will be freed on power_supply_unregister() call.
- */
- sysfs_remove_group(&dev_info->bat->dev.kobj, &ds2780_attr_group);
-
- power_supply_unregister(dev_info->bat);
-
return 0;
}
.name = "ds2780-battery",
},
.probe = ds2780_battery_probe,
- .remove = ds2780_battery_remove,
};
module_platform_driver(ds2780_battery_driver);
return count;
}
-static const struct bin_attribute ds2781_param_eeprom_bin_attr = {
+static struct bin_attribute ds2781_param_eeprom_bin_attr = {
.attr = {
.name = "param_eeprom",
.mode = S_IRUGO | S_IWUSR,
return count;
}
-static const struct bin_attribute ds2781_user_eeprom_bin_attr = {
+static struct bin_attribute ds2781_user_eeprom_bin_attr = {
.attr = {
.name = "user_eeprom",
.mode = S_IRUGO | S_IWUSR,
static DEVICE_ATTR(pio_pin, S_IRUGO | S_IWUSR, ds2781_get_pio_pin,
ds2781_set_pio_pin);
-
-static struct attribute *ds2781_attributes[] = {
+static struct attribute *ds2781_sysfs_attrs[] = {
&dev_attr_pmod_enabled.attr,
&dev_attr_sense_resistor_value.attr,
&dev_attr_rsgain_setting.attr,
NULL
};
-static const struct attribute_group ds2781_attr_group = {
- .attrs = ds2781_attributes,
+static struct bin_attribute *ds2781_sysfs_bin_attrs[] = {
+ &ds2781_param_eeprom_bin_attr,
+ &ds2781_user_eeprom_bin_attr,
+ NULL,
+};
+
+static const struct attribute_group ds2781_sysfs_group = {
+ .attrs = ds2781_sysfs_attrs,
+ .bin_attrs = ds2781_sysfs_bin_attrs,
+
+};
+
+static const struct attribute_group *ds2781_sysfs_groups[] = {
+ &ds2781_sysfs_group,
+ NULL,
};
static int ds2781_battery_probe(struct platform_device *pdev)
{
struct power_supply_config psy_cfg = {};
- int ret = 0;
struct ds2781_device_info *dev_info;
dev_info = devm_kzalloc(&pdev->dev, sizeof(*dev_info), GFP_KERNEL);
dev_info->bat_desc.get_property = ds2781_battery_get_property;
psy_cfg.drv_data = dev_info;
+ psy_cfg.attr_grp = ds2781_sysfs_groups;
- dev_info->bat = power_supply_register(&pdev->dev, &dev_info->bat_desc,
- &psy_cfg);
+ dev_info->bat = devm_power_supply_register(&pdev->dev,
+ &dev_info->bat_desc,
+ &psy_cfg);
if (IS_ERR(dev_info->bat)) {
dev_err(dev_info->dev, "failed to register battery\n");
- ret = PTR_ERR(dev_info->bat);
- goto fail;
- }
-
- ret = sysfs_create_group(&dev_info->bat->dev.kobj, &ds2781_attr_group);
- if (ret) {
- dev_err(dev_info->dev, "failed to create sysfs group\n");
- goto fail_unregister;
- }
-
- ret = sysfs_create_bin_file(&dev_info->bat->dev.kobj,
- &ds2781_param_eeprom_bin_attr);
- if (ret) {
- dev_err(dev_info->dev,
- "failed to create param eeprom bin file");
- goto fail_remove_group;
- }
-
- ret = sysfs_create_bin_file(&dev_info->bat->dev.kobj,
- &ds2781_user_eeprom_bin_attr);
- if (ret) {
- dev_err(dev_info->dev,
- "failed to create user eeprom bin file");
- goto fail_remove_bin_file;
+ return PTR_ERR(dev_info->bat);
}
return 0;
-
-fail_remove_bin_file:
- sysfs_remove_bin_file(&dev_info->bat->dev.kobj,
- &ds2781_param_eeprom_bin_attr);
-fail_remove_group:
- sysfs_remove_group(&dev_info->bat->dev.kobj, &ds2781_attr_group);
-fail_unregister:
- power_supply_unregister(dev_info->bat);
-fail:
- return ret;
-}
-
-static int ds2781_battery_remove(struct platform_device *pdev)
-{
- struct ds2781_device_info *dev_info = platform_get_drvdata(pdev);
-
- /*
- * Remove attributes before unregistering power supply
- * because 'bat' will be freed on power_supply_unregister() call.
- */
- sysfs_remove_group(&dev_info->bat->dev.kobj, &ds2781_attr_group);
-
- power_supply_unregister(dev_info->bat);
-
- return 0;
}
static struct platform_driver ds2781_battery_driver = {
.name = "ds2781-battery",
},
.probe = ds2781_battery_probe,
- .remove = ds2781_battery_remove,
};
module_platform_driver(ds2781_battery_driver);
if (!strcmp("usb-sdp", chargetype))
return POWER_SUPPLY_TYPE_USB;
if (!strcmp("usb-dcp", chargetype))
- return POWER_SUPPLY_TYPE_USB_DCP;
+ return POWER_SUPPLY_TYPE_USB;
if (!strcmp("usb-cdp", chargetype))
- return POWER_SUPPLY_TYPE_USB_CDP;
+ return POWER_SUPPLY_TYPE_USB;
if (!strcmp("usb-aca", chargetype))
- return POWER_SUPPLY_TYPE_USB_ACA;
+ return POWER_SUPPLY_TYPE_USB;
}
dev_warn(dev, "unknown charger type %s\n", chargetype);
.get_property = lp8788_battery_get_property,
};
-static int lp8788_psy_register(struct platform_device *pdev,
- struct lp8788_charger *pchg)
-{
- struct power_supply_config charger_cfg = {};
-
- charger_cfg.supplied_to = battery_supplied_to;
- charger_cfg.num_supplicants = ARRAY_SIZE(battery_supplied_to);
-
- pchg->charger = power_supply_register(&pdev->dev,
- &lp8788_psy_charger_desc,
- &charger_cfg);
- if (IS_ERR(pchg->charger))
- return -EPERM;
-
- pchg->battery = power_supply_register(&pdev->dev,
- &lp8788_psy_battery_desc, NULL);
- if (IS_ERR(pchg->battery)) {
- power_supply_unregister(pchg->charger);
- return -EPERM;
- }
-
- return 0;
-}
-
static void lp8788_psy_unregister(struct lp8788_charger *pchg)
{
power_supply_unregister(pchg->battery);
static DEVICE_ATTR(eoc_time, S_IRUSR, lp8788_show_eoc_time, NULL);
static DEVICE_ATTR(eoc_level, S_IRUSR, lp8788_show_eoc_level, NULL);
-static struct attribute *lp8788_charger_attr[] = {
+static struct attribute *lp8788_charger_sysfs_attrs[] = {
&dev_attr_charger_status.attr,
&dev_attr_eoc_time.attr,
&dev_attr_eoc_level.attr,
NULL,
};
-static const struct attribute_group lp8788_attr_group = {
- .attrs = lp8788_charger_attr,
-};
+ATTRIBUTE_GROUPS(lp8788_charger_sysfs);
+
+static int lp8788_psy_register(struct platform_device *pdev,
+ struct lp8788_charger *pchg)
+{
+ struct power_supply_config charger_cfg = {};
+
+ charger_cfg.attr_grp = lp8788_charger_sysfs_groups;
+ charger_cfg.supplied_to = battery_supplied_to;
+ charger_cfg.num_supplicants = ARRAY_SIZE(battery_supplied_to);
+
+ pchg->charger = power_supply_register(&pdev->dev,
+ &lp8788_psy_charger_desc,
+ &charger_cfg);
+ if (IS_ERR(pchg->charger))
+ return -EPERM;
+
+ pchg->battery = power_supply_register(&pdev->dev,
+ &lp8788_psy_battery_desc, NULL);
+ if (IS_ERR(pchg->battery)) {
+ power_supply_unregister(pchg->charger);
+ return -EPERM;
+ }
+
+ return 0;
+}
static int lp8788_charger_probe(struct platform_device *pdev)
{
if (ret)
return ret;
- ret = sysfs_create_group(&pdev->dev.kobj, &lp8788_attr_group);
- if (ret) {
- lp8788_psy_unregister(pchg);
- return ret;
- }
-
ret = lp8788_irq_register(pdev, pchg);
if (ret)
dev_warn(dev, "failed to register charger irq: %d\n", ret);
flush_work(&pchg->charger_work);
lp8788_irq_unregister(pdev, pchg);
- sysfs_remove_group(&pdev->dev.kobj, &lp8788_attr_group);
lp8788_psy_unregister(pchg);
lp8788_release_adc_channel(pchg);
if (ret)
return ret;
- val->intval = (s16)be16_to_cpu(ec_word) * 100 / 256;
+ val->intval = (s16)be16_to_cpu(ec_word) * 10 / 256;
break;
case POWER_SUPPLY_PROP_TEMP_AMBIENT:
ret = olpc_ec_cmd(EC_AMB_TEMP, NULL, 0, (void *)&ec_word, 2);
if (ret)
return ret;
- val->intval = (int)be16_to_cpu(ec_word) * 100 / 256;
+ val->intval = (int)be16_to_cpu(ec_word) * 10 / 256;
break;
case POWER_SUPPLY_PROP_CHARGE_COUNTER:
ret = olpc_ec_cmd(EC_BAT_ACR, NULL, 0, (void *)&ec_word, 2);
*/
static DEVICE_ATTR(chg_curlim, S_IRUGO | S_IWUSR, show_chglim, set_chglim);
-static struct attribute *pcf50633_mbc_sysfs_entries[] = {
+static struct attribute *pcf50633_mbc_sysfs_attrs[] = {
&dev_attr_chgmode.attr,
&dev_attr_usb_curlim.attr,
&dev_attr_chg_curlim.attr,
NULL,
};
-static const struct attribute_group mbc_attr_group = {
- .name = NULL, /* put in device directory */
- .attrs = pcf50633_mbc_sysfs_entries,
-};
+ATTRIBUTE_GROUPS(pcf50633_mbc_sysfs);
static void
pcf50633_mbc_irq_handler(int irq, void *data)
static int pcf50633_mbc_probe(struct platform_device *pdev)
{
struct power_supply_config psy_cfg = {};
+ struct power_supply_config usb_psy_cfg;
struct pcf50633_mbc *mbc;
int i;
u8 mbcs1;
return PTR_ERR(mbc->adapter);
}
+ usb_psy_cfg = psy_cfg;
+ usb_psy_cfg.attr_grp = pcf50633_mbc_sysfs_groups;
+
mbc->usb = power_supply_register(&pdev->dev, &pcf50633_mbc_usb_desc,
- &psy_cfg);
+ &usb_psy_cfg);
if (IS_ERR(mbc->usb)) {
dev_err(mbc->pcf->dev, "failed to register usb\n");
power_supply_unregister(mbc->adapter);
return PTR_ERR(mbc->ac);
}
- if (sysfs_create_group(&pdev->dev.kobj, &mbc_attr_group))
- dev_err(mbc->pcf->dev, "failed to create sysfs entries\n");
-
mbcs1 = pcf50633_reg_read(mbc->pcf, PCF50633_REG_MBCS1);
if (mbcs1 & PCF50633_MBCS1_USBPRES)
pcf50633_mbc_irq_handler(PCF50633_IRQ_USBINS, mbc);
for (i = 0; i < ARRAY_SIZE(mbc_irq_handlers); i++)
pcf50633_free_irq(mbc->pcf, mbc_irq_handlers[i]);
- sysfs_remove_group(&pdev->dev.kobj, &mbc_attr_group);
power_supply_unregister(mbc->usb);
power_supply_unregister(mbc->adapter);
power_supply_unregister(mbc->ac);
{
struct device_node *battery_np;
const char *value;
- int err;
+ int err, len, index;
info->energy_full_design_uwh = -EINVAL;
info->charge_full_design_uah = -EINVAL;
info->charge_term_current_ua = -EINVAL;
info->constant_charge_current_max_ua = -EINVAL;
info->constant_charge_voltage_max_uv = -EINVAL;
+ info->factory_internal_resistance_uohm = -EINVAL;
+
+ for (index = 0; index < POWER_SUPPLY_OCV_TEMP_MAX; index++) {
+ info->ocv_table[index] = NULL;
+ info->ocv_temp[index] = -EINVAL;
+ info->ocv_table_size[index] = -EINVAL;
+ }
if (!psy->of_node) {
dev_warn(&psy->dev, "%s currently only supports devicetree\n",
&info->constant_charge_current_max_ua);
of_property_read_u32(battery_np, "constant_charge_voltage_max_microvolt",
&info->constant_charge_voltage_max_uv);
+ of_property_read_u32(battery_np, "factory-internal-resistance-micro-ohms",
+ &info->factory_internal_resistance_uohm);
+
+ len = of_property_count_u32_elems(battery_np, "ocv-capacity-celsius");
+ if (len < 0 && len != -EINVAL) {
+ return len;
+ } else if (len > POWER_SUPPLY_OCV_TEMP_MAX) {
+ dev_err(&psy->dev, "Too many temperature values\n");
+ return -EINVAL;
+ } else if (len > 0) {
+ of_property_read_u32_array(battery_np, "ocv-capacity-celsius",
+ info->ocv_temp, len);
+ }
+
+ for (index = 0; index < len; index++) {
+ struct power_supply_battery_ocv_table *table;
+ char *propname;
+ const __be32 *list;
+ int i, tab_len, size;
+
+ propname = kasprintf(GFP_KERNEL, "ocv-capacity-table-%d", index);
+ list = of_get_property(battery_np, propname, &size);
+ if (!list || !size) {
+ dev_err(&psy->dev, "failed to get %s\n", propname);
+ kfree(propname);
+ power_supply_put_battery_info(psy, info);
+ return -EINVAL;
+ }
+
+ kfree(propname);
+ tab_len = size / (2 * sizeof(__be32));
+ info->ocv_table_size[index] = tab_len;
+
+ table = info->ocv_table[index] =
+ devm_kcalloc(&psy->dev, tab_len, sizeof(*table), GFP_KERNEL);
+ if (!info->ocv_table[index]) {
+ power_supply_put_battery_info(psy, info);
+ return -ENOMEM;
+ }
+
+ for (i = 0; i < tab_len; i++) {
+ table[i].ocv = be32_to_cpu(*list++);
+ table[i].capacity = be32_to_cpu(*list++);
+ }
+ }
return 0;
}
EXPORT_SYMBOL_GPL(power_supply_get_battery_info);
+void power_supply_put_battery_info(struct power_supply *psy,
+ struct power_supply_battery_info *info)
+{
+ int i;
+
+ for (i = 0; i < POWER_SUPPLY_OCV_TEMP_MAX; i++) {
+ if (info->ocv_table[i])
+ devm_kfree(&psy->dev, info->ocv_table[i]);
+ }
+}
+EXPORT_SYMBOL_GPL(power_supply_put_battery_info);
+
+/**
+ * power_supply_ocv2cap_simple() - find the battery capacity
+ * @table: Pointer to battery OCV lookup table
+ * @table_len: OCV table length
+ * @ocv: Current OCV value
+ *
+ * This helper function is used to look up battery capacity according to
+ * current OCV value from one OCV table, and the OCV table must be ordered
+ * descending.
+ *
+ * Return: the battery capacity.
+ */
+int power_supply_ocv2cap_simple(struct power_supply_battery_ocv_table *table,
+ int table_len, int ocv)
+{
+ int i, cap, tmp;
+
+ for (i = 0; i < table_len; i++)
+ if (ocv > table[i].ocv)
+ break;
+
+ if (i > 0 && i < table_len) {
+ tmp = (table[i - 1].capacity - table[i].capacity) *
+ (ocv - table[i].ocv);
+ tmp /= table[i - 1].ocv - table[i].ocv;
+ cap = tmp + table[i].capacity;
+ } else if (i == 0) {
+ cap = table[0].capacity;
+ } else {
+ cap = table[table_len - 1].capacity;
+ }
+
+ return cap;
+}
+EXPORT_SYMBOL_GPL(power_supply_ocv2cap_simple);
+
+struct power_supply_battery_ocv_table *
+power_supply_find_ocv2cap_table(struct power_supply_battery_info *info,
+ int temp, int *table_len)
+{
+ int best_temp_diff = INT_MAX, temp_diff;
+ u8 i, best_index = 0;
+
+ if (!info->ocv_table[0])
+ return NULL;
+
+ for (i = 0; i < POWER_SUPPLY_OCV_TEMP_MAX; i++) {
+ temp_diff = abs(info->ocv_temp[i] - temp);
+
+ if (temp_diff < best_temp_diff) {
+ best_temp_diff = temp_diff;
+ best_index = i;
+ }
+ }
+
+ *table_len = info->ocv_table_size[best_index];
+ return info->ocv_table[best_index];
+}
+EXPORT_SYMBOL_GPL(power_supply_find_ocv2cap_table);
+
+int power_supply_batinfo_ocv2cap(struct power_supply_battery_info *info,
+ int ocv, int temp)
+{
+ struct power_supply_battery_ocv_table *table;
+ int table_len;
+
+ table = power_supply_find_ocv2cap_table(info, temp, &table_len);
+ if (!table)
+ return -EINVAL;
+
+ return power_supply_ocv2cap_simple(table, table_len, ocv);
+}
+EXPORT_SYMBOL_GPL(power_supply_batinfo_ocv2cap);
+
int power_supply_get_property(struct power_supply *psy,
enum power_supply_property psp,
union power_supply_propval *val)
dev_set_drvdata(dev, psy);
psy->desc = desc;
if (cfg) {
+ dev->groups = cfg->attr_grp;
psy->drv_data = cfg->drv_data;
psy->of_node =
cfg->fwnode ? to_of_node(cfg->fwnode) : cfg->of_node;
struct usb_phy *usb_phy;
struct notifier_block usb_notify;
struct power_supply *psy_usb;
+ struct work_struct work;
struct mutex lock;
bool charging;
u32 base;
+ u32 limit;
};
static void sc2731_charger_stop_charge(struct sc2731_charger_info *info)
.property_is_writeable = sc2731_charger_property_is_writeable,
};
-static int sc2731_charger_usb_change(struct notifier_block *nb,
- unsigned long limit, void *data)
+static void sc2731_charger_work(struct work_struct *data)
{
struct sc2731_charger_info *info =
- container_of(nb, struct sc2731_charger_info, usb_notify);
- int ret = 0;
+ container_of(data, struct sc2731_charger_info, work);
+ int ret;
mutex_lock(&info->lock);
- if (limit > 0) {
+ if (info->limit > 0 && !info->charging) {
/* set current limitation and start to charge */
- ret = sc2731_charger_set_current_limit(info, limit);
+ ret = sc2731_charger_set_current_limit(info, info->limit);
if (ret)
goto out;
- ret = sc2731_charger_set_current(info, limit);
+ ret = sc2731_charger_set_current(info, info->limit);
if (ret)
goto out;
goto out;
info->charging = true;
- } else {
+ } else if (!info->limit && info->charging) {
/* Stop charging */
info->charging = false;
sc2731_charger_stop_charge(info);
out:
mutex_unlock(&info->lock);
- return ret;
+}
+
+static int sc2731_charger_usb_change(struct notifier_block *nb,
+ unsigned long limit, void *data)
+{
+ struct sc2731_charger_info *info =
+ container_of(nb, struct sc2731_charger_info, usb_notify);
+
+ info->limit = limit;
+
+ schedule_work(&info->work);
+
+ return NOTIFY_OK;
}
static int sc2731_charger_hw_init(struct sc2731_charger_info *info)
vol_val = (term_voltage - 4200) / 100;
else
vol_val = 0;
+
+ power_supply_put_battery_info(info->psy_usb, &bat_info);
}
/* Set charge termination current */
return ret;
}
+static void sc2731_charger_detect_status(struct sc2731_charger_info *info)
+{
+ unsigned int min, max;
+
+ /*
+ * If the USB charger status has been USB_CHARGER_PRESENT before
+ * registering the notifier, we should start to charge with getting
+ * the charge current.
+ */
+ if (info->usb_phy->chg_state != USB_CHARGER_PRESENT)
+ return;
+
+ usb_phy_get_charger_current(info->usb_phy, &min, &max);
+ info->limit = min;
+
+ schedule_work(&info->work);
+}
+
static int sc2731_charger_probe(struct platform_device *pdev)
{
struct device_node *np = pdev->dev.of_node;
mutex_init(&info->lock);
info->dev = &pdev->dev;
+ INIT_WORK(&info->work, sc2731_charger_work);
info->regmap = dev_get_regmap(pdev->dev.parent, NULL);
if (!info->regmap) {
return ret;
}
+ sc2731_charger_detect_status(info);
+
return 0;
}
--- /dev/null
+// SPDX-License-Identifier: GPL-2.0
+// Copyright (C) 2018 Spreadtrum Communications Inc.
+
+#include <linux/gpio/consumer.h>
+#include <linux/iio/consumer.h>
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/nvmem-consumer.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/power_supply.h>
+#include <linux/regmap.h>
+#include <linux/slab.h>
+
+/* PMIC global control registers definition */
+#define SC27XX_MODULE_EN0 0xc08
+#define SC27XX_CLK_EN0 0xc18
+#define SC27XX_FGU_EN BIT(7)
+#define SC27XX_FGU_RTC_EN BIT(6)
+
+/* FGU registers definition */
+#define SC27XX_FGU_START 0x0
+#define SC27XX_FGU_CONFIG 0x4
+#define SC27XX_FGU_ADC_CONFIG 0x8
+#define SC27XX_FGU_STATUS 0xc
+#define SC27XX_FGU_INT_EN 0x10
+#define SC27XX_FGU_INT_CLR 0x14
+#define SC27XX_FGU_INT_STS 0x1c
+#define SC27XX_FGU_VOLTAGE 0x20
+#define SC27XX_FGU_OCV 0x24
+#define SC27XX_FGU_POCV 0x28
+#define SC27XX_FGU_CURRENT 0x2c
+#define SC27XX_FGU_LOW_OVERLOAD 0x34
+#define SC27XX_FGU_CLBCNT_SETH 0x50
+#define SC27XX_FGU_CLBCNT_SETL 0x54
+#define SC27XX_FGU_CLBCNT_DELTH 0x58
+#define SC27XX_FGU_CLBCNT_DELTL 0x5c
+#define SC27XX_FGU_CLBCNT_VALH 0x68
+#define SC27XX_FGU_CLBCNT_VALL 0x6c
+#define SC27XX_FGU_CLBCNT_QMAXL 0x74
+#define SC27XX_FGU_USER_AREA_SET 0xa0
+#define SC27XX_FGU_USER_AREA_CLEAR 0xa4
+#define SC27XX_FGU_USER_AREA_STATUS 0xa8
+
+#define SC27XX_WRITE_SELCLB_EN BIT(0)
+#define SC27XX_FGU_CLBCNT_MASK GENMASK(15, 0)
+#define SC27XX_FGU_CLBCNT_SHIFT 16
+#define SC27XX_FGU_LOW_OVERLOAD_MASK GENMASK(12, 0)
+
+#define SC27XX_FGU_INT_MASK GENMASK(9, 0)
+#define SC27XX_FGU_LOW_OVERLOAD_INT BIT(0)
+#define SC27XX_FGU_CLBCNT_DELTA_INT BIT(2)
+
+#define SC27XX_FGU_MODE_AREA_MASK GENMASK(15, 12)
+#define SC27XX_FGU_CAP_AREA_MASK GENMASK(11, 0)
+#define SC27XX_FGU_MODE_AREA_SHIFT 12
+
+#define SC27XX_FGU_FIRST_POWERTON GENMASK(3, 0)
+#define SC27XX_FGU_DEFAULT_CAP GENMASK(11, 0)
+#define SC27XX_FGU_NORMAIL_POWERTON 0x5
+
+#define SC27XX_FGU_CUR_BASIC_ADC 8192
+#define SC27XX_FGU_SAMPLE_HZ 2
+
+/*
+ * struct sc27xx_fgu_data: describe the FGU device
+ * @regmap: regmap for register access
+ * @dev: platform device
+ * @battery: battery power supply
+ * @base: the base offset for the controller
+ * @lock: protect the structure
+ * @gpiod: GPIO for battery detection
+ * @channel: IIO channel to get battery temperature
+ * @internal_resist: the battery internal resistance in mOhm
+ * @total_cap: the total capacity of the battery in mAh
+ * @init_cap: the initial capacity of the battery in mAh
+ * @alarm_cap: the alarm capacity
+ * @init_clbcnt: the initial coulomb counter
+ * @max_volt: the maximum constant input voltage in millivolt
+ * @min_volt: the minimum drained battery voltage in microvolt
+ * @table_len: the capacity table length
+ * @cur_1000ma_adc: ADC value corresponding to 1000 mA
+ * @vol_1000mv_adc: ADC value corresponding to 1000 mV
+ * @cap_table: capacity table with corresponding ocv
+ */
+struct sc27xx_fgu_data {
+ struct regmap *regmap;
+ struct device *dev;
+ struct power_supply *battery;
+ u32 base;
+ struct mutex lock;
+ struct gpio_desc *gpiod;
+ struct iio_channel *channel;
+ bool bat_present;
+ int internal_resist;
+ int total_cap;
+ int init_cap;
+ int alarm_cap;
+ int init_clbcnt;
+ int max_volt;
+ int min_volt;
+ int table_len;
+ int cur_1000ma_adc;
+ int vol_1000mv_adc;
+ struct power_supply_battery_ocv_table *cap_table;
+};
+
+static int sc27xx_fgu_cap_to_clbcnt(struct sc27xx_fgu_data *data, int capacity);
+
+static const char * const sc27xx_charger_supply_name[] = {
+ "sc2731_charger",
+ "sc2720_charger",
+ "sc2721_charger",
+ "sc2723_charger",
+};
+
+static int sc27xx_fgu_adc_to_current(struct sc27xx_fgu_data *data, int adc)
+{
+ return DIV_ROUND_CLOSEST(adc * 1000, data->cur_1000ma_adc);
+}
+
+static int sc27xx_fgu_adc_to_voltage(struct sc27xx_fgu_data *data, int adc)
+{
+ return DIV_ROUND_CLOSEST(adc * 1000, data->vol_1000mv_adc);
+}
+
+static int sc27xx_fgu_voltage_to_adc(struct sc27xx_fgu_data *data, int vol)
+{
+ return DIV_ROUND_CLOSEST(vol * data->vol_1000mv_adc, 1000);
+}
+
+static bool sc27xx_fgu_is_first_poweron(struct sc27xx_fgu_data *data)
+{
+ int ret, status, cap, mode;
+
+ ret = regmap_read(data->regmap,
+ data->base + SC27XX_FGU_USER_AREA_STATUS, &status);
+ if (ret)
+ return false;
+
+ /*
+ * We use low 4 bits to save the last battery capacity and high 12 bits
+ * to save the system boot mode.
+ */
+ mode = (status & SC27XX_FGU_MODE_AREA_MASK) >> SC27XX_FGU_MODE_AREA_SHIFT;
+ cap = status & SC27XX_FGU_CAP_AREA_MASK;
+
+ /*
+ * When FGU has been powered down, the user area registers became
+ * default value (0xffff), which can be used to valid if the system is
+ * first power on or not.
+ */
+ if (mode == SC27XX_FGU_FIRST_POWERTON || cap == SC27XX_FGU_DEFAULT_CAP)
+ return true;
+
+ return false;
+}
+
+static int sc27xx_fgu_save_boot_mode(struct sc27xx_fgu_data *data,
+ int boot_mode)
+{
+ int ret;
+
+ ret = regmap_update_bits(data->regmap,
+ data->base + SC27XX_FGU_USER_AREA_CLEAR,
+ SC27XX_FGU_MODE_AREA_MASK,
+ SC27XX_FGU_MODE_AREA_MASK);
+ if (ret)
+ return ret;
+
+ return regmap_update_bits(data->regmap,
+ data->base + SC27XX_FGU_USER_AREA_SET,
+ SC27XX_FGU_MODE_AREA_MASK,
+ boot_mode << SC27XX_FGU_MODE_AREA_SHIFT);
+}
+
+static int sc27xx_fgu_save_last_cap(struct sc27xx_fgu_data *data, int cap)
+{
+ int ret;
+
+ ret = regmap_update_bits(data->regmap,
+ data->base + SC27XX_FGU_USER_AREA_CLEAR,
+ SC27XX_FGU_CAP_AREA_MASK,
+ SC27XX_FGU_CAP_AREA_MASK);
+ if (ret)
+ return ret;
+
+ return regmap_update_bits(data->regmap,
+ data->base + SC27XX_FGU_USER_AREA_SET,
+ SC27XX_FGU_CAP_AREA_MASK, cap);
+}
+
+static int sc27xx_fgu_read_last_cap(struct sc27xx_fgu_data *data, int *cap)
+{
+ int ret, value;
+
+ ret = regmap_read(data->regmap,
+ data->base + SC27XX_FGU_USER_AREA_STATUS, &value);
+ if (ret)
+ return ret;
+
+ *cap = value & SC27XX_FGU_CAP_AREA_MASK;
+ return 0;
+}
+
+/*
+ * When system boots on, we can not read battery capacity from coulomb
+ * registers, since now the coulomb registers are invalid. So we should
+ * calculate the battery open circuit voltage, and get current battery
+ * capacity according to the capacity table.
+ */
+static int sc27xx_fgu_get_boot_capacity(struct sc27xx_fgu_data *data, int *cap)
+{
+ int volt, cur, oci, ocv, ret;
+ bool is_first_poweron = sc27xx_fgu_is_first_poweron(data);
+
+ /*
+ * If system is not the first power on, we should use the last saved
+ * battery capacity as the initial battery capacity. Otherwise we should
+ * re-calculate the initial battery capacity.
+ */
+ if (!is_first_poweron) {
+ ret = sc27xx_fgu_read_last_cap(data, cap);
+ if (ret)
+ return ret;
+
+ return sc27xx_fgu_save_boot_mode(data, SC27XX_FGU_NORMAIL_POWERTON);
+ }
+
+ /*
+ * After system booting on, the SC27XX_FGU_CLBCNT_QMAXL register saved
+ * the first sampled open circuit current.
+ */
+ ret = regmap_read(data->regmap, data->base + SC27XX_FGU_CLBCNT_QMAXL,
+ &cur);
+ if (ret)
+ return ret;
+
+ cur <<= 1;
+ oci = sc27xx_fgu_adc_to_current(data, cur - SC27XX_FGU_CUR_BASIC_ADC);
+
+ /*
+ * Should get the OCV from SC27XX_FGU_POCV register at the system
+ * beginning. It is ADC values reading from registers which need to
+ * convert the corresponding voltage.
+ */
+ ret = regmap_read(data->regmap, data->base + SC27XX_FGU_POCV, &volt);
+ if (ret)
+ return ret;
+
+ volt = sc27xx_fgu_adc_to_voltage(data, volt);
+ ocv = volt * 1000 - oci * data->internal_resist;
+
+ /*
+ * Parse the capacity table to look up the correct capacity percent
+ * according to current battery's corresponding OCV values.
+ */
+ *cap = power_supply_ocv2cap_simple(data->cap_table, data->table_len,
+ ocv);
+
+ ret = sc27xx_fgu_save_last_cap(data, *cap);
+ if (ret)
+ return ret;
+
+ return sc27xx_fgu_save_boot_mode(data, SC27XX_FGU_NORMAIL_POWERTON);
+}
+
+static int sc27xx_fgu_set_clbcnt(struct sc27xx_fgu_data *data, int clbcnt)
+{
+ int ret;
+
+ clbcnt *= SC27XX_FGU_SAMPLE_HZ;
+
+ ret = regmap_update_bits(data->regmap,
+ data->base + SC27XX_FGU_CLBCNT_SETL,
+ SC27XX_FGU_CLBCNT_MASK, clbcnt);
+ if (ret)
+ return ret;
+
+ ret = regmap_update_bits(data->regmap,
+ data->base + SC27XX_FGU_CLBCNT_SETH,
+ SC27XX_FGU_CLBCNT_MASK,
+ clbcnt >> SC27XX_FGU_CLBCNT_SHIFT);
+ if (ret)
+ return ret;
+
+ return regmap_update_bits(data->regmap, data->base + SC27XX_FGU_START,
+ SC27XX_WRITE_SELCLB_EN,
+ SC27XX_WRITE_SELCLB_EN);
+}
+
+static int sc27xx_fgu_get_clbcnt(struct sc27xx_fgu_data *data, int *clb_cnt)
+{
+ int ccl, cch, ret;
+
+ ret = regmap_read(data->regmap, data->base + SC27XX_FGU_CLBCNT_VALL,
+ &ccl);
+ if (ret)
+ return ret;
+
+ ret = regmap_read(data->regmap, data->base + SC27XX_FGU_CLBCNT_VALH,
+ &cch);
+ if (ret)
+ return ret;
+
+ *clb_cnt = ccl & SC27XX_FGU_CLBCNT_MASK;
+ *clb_cnt |= (cch & SC27XX_FGU_CLBCNT_MASK) << SC27XX_FGU_CLBCNT_SHIFT;
+ *clb_cnt /= SC27XX_FGU_SAMPLE_HZ;
+
+ return 0;
+}
+
+static int sc27xx_fgu_get_capacity(struct sc27xx_fgu_data *data, int *cap)
+{
+ int ret, cur_clbcnt, delta_clbcnt, delta_cap, temp;
+
+ /* Get current coulomb counters firstly */
+ ret = sc27xx_fgu_get_clbcnt(data, &cur_clbcnt);
+ if (ret)
+ return ret;
+
+ delta_clbcnt = cur_clbcnt - data->init_clbcnt;
+
+ /*
+ * Convert coulomb counter to delta capacity (mAh), and set multiplier
+ * as 100 to improve the precision.
+ */
+ temp = DIV_ROUND_CLOSEST(delta_clbcnt, 360);
+ temp = sc27xx_fgu_adc_to_current(data, temp);
+
+ /*
+ * Convert to capacity percent of the battery total capacity,
+ * and multiplier is 100 too.
+ */
+ delta_cap = DIV_ROUND_CLOSEST(temp * 100, data->total_cap);
+ *cap = delta_cap + data->init_cap;
+
+ return 0;
+}
+
+static int sc27xx_fgu_get_vbat_vol(struct sc27xx_fgu_data *data, int *val)
+{
+ int ret, vol;
+
+ ret = regmap_read(data->regmap, data->base + SC27XX_FGU_VOLTAGE, &vol);
+ if (ret)
+ return ret;
+
+ /*
+ * It is ADC values reading from registers which need to convert to
+ * corresponding voltage values.
+ */
+ *val = sc27xx_fgu_adc_to_voltage(data, vol);
+
+ return 0;
+}
+
+static int sc27xx_fgu_get_current(struct sc27xx_fgu_data *data, int *val)
+{
+ int ret, cur;
+
+ ret = regmap_read(data->regmap, data->base + SC27XX_FGU_CURRENT, &cur);
+ if (ret)
+ return ret;
+
+ /*
+ * It is ADC values reading from registers which need to convert to
+ * corresponding current values.
+ */
+ *val = sc27xx_fgu_adc_to_current(data, cur - SC27XX_FGU_CUR_BASIC_ADC);
+
+ return 0;
+}
+
+static int sc27xx_fgu_get_vbat_ocv(struct sc27xx_fgu_data *data, int *val)
+{
+ int vol, cur, ret;
+
+ ret = sc27xx_fgu_get_vbat_vol(data, &vol);
+ if (ret)
+ return ret;
+
+ ret = sc27xx_fgu_get_current(data, &cur);
+ if (ret)
+ return ret;
+
+ /* Return the battery OCV in micro volts. */
+ *val = vol * 1000 - cur * data->internal_resist;
+
+ return 0;
+}
+
+static int sc27xx_fgu_get_temp(struct sc27xx_fgu_data *data, int *temp)
+{
+ return iio_read_channel_processed(data->channel, temp);
+}
+
+static int sc27xx_fgu_get_health(struct sc27xx_fgu_data *data, int *health)
+{
+ int ret, vol;
+
+ ret = sc27xx_fgu_get_vbat_vol(data, &vol);
+ if (ret)
+ return ret;
+
+ if (vol > data->max_volt)
+ *health = POWER_SUPPLY_HEALTH_OVERVOLTAGE;
+ else
+ *health = POWER_SUPPLY_HEALTH_GOOD;
+
+ return 0;
+}
+
+static int sc27xx_fgu_get_status(struct sc27xx_fgu_data *data, int *status)
+{
+ union power_supply_propval val;
+ struct power_supply *psy;
+ int i, ret = -EINVAL;
+
+ for (i = 0; i < ARRAY_SIZE(sc27xx_charger_supply_name); i++) {
+ psy = power_supply_get_by_name(sc27xx_charger_supply_name[i]);
+ if (!psy)
+ continue;
+
+ ret = power_supply_get_property(psy, POWER_SUPPLY_PROP_STATUS,
+ &val);
+ power_supply_put(psy);
+ if (ret)
+ return ret;
+
+ *status = val.intval;
+ }
+
+ return ret;
+}
+
+static int sc27xx_fgu_get_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ struct sc27xx_fgu_data *data = power_supply_get_drvdata(psy);
+ int ret = 0;
+ int value;
+
+ mutex_lock(&data->lock);
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_STATUS:
+ ret = sc27xx_fgu_get_status(data, &value);
+ if (ret)
+ goto error;
+
+ val->intval = value;
+ break;
+
+ case POWER_SUPPLY_PROP_HEALTH:
+ ret = sc27xx_fgu_get_health(data, &value);
+ if (ret)
+ goto error;
+
+ val->intval = value;
+ break;
+
+ case POWER_SUPPLY_PROP_PRESENT:
+ val->intval = data->bat_present;
+ break;
+
+ case POWER_SUPPLY_PROP_TEMP:
+ ret = sc27xx_fgu_get_temp(data, &value);
+ if (ret)
+ goto error;
+
+ val->intval = value;
+ break;
+
+ case POWER_SUPPLY_PROP_TECHNOLOGY:
+ val->intval = POWER_SUPPLY_TECHNOLOGY_LION;
+ break;
+
+ case POWER_SUPPLY_PROP_CAPACITY:
+ ret = sc27xx_fgu_get_capacity(data, &value);
+ if (ret)
+ goto error;
+
+ val->intval = value;
+ break;
+
+ case POWER_SUPPLY_PROP_VOLTAGE_NOW:
+ ret = sc27xx_fgu_get_vbat_vol(data, &value);
+ if (ret)
+ goto error;
+
+ val->intval = value * 1000;
+ break;
+
+ case POWER_SUPPLY_PROP_VOLTAGE_OCV:
+ ret = sc27xx_fgu_get_vbat_ocv(data, &value);
+ if (ret)
+ goto error;
+
+ val->intval = value;
+ break;
+
+ case POWER_SUPPLY_PROP_CURRENT_NOW:
+ case POWER_SUPPLY_PROP_CURRENT_AVG:
+ ret = sc27xx_fgu_get_current(data, &value);
+ if (ret)
+ goto error;
+
+ val->intval = value * 1000;
+ break;
+
+ default:
+ ret = -EINVAL;
+ break;
+ }
+
+error:
+ mutex_unlock(&data->lock);
+ return ret;
+}
+
+static int sc27xx_fgu_set_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ const union power_supply_propval *val)
+{
+ struct sc27xx_fgu_data *data = power_supply_get_drvdata(psy);
+ int ret;
+
+ if (psp != POWER_SUPPLY_PROP_CAPACITY)
+ return -EINVAL;
+
+ mutex_lock(&data->lock);
+
+ ret = sc27xx_fgu_save_last_cap(data, val->intval);
+
+ mutex_unlock(&data->lock);
+
+ if (ret < 0)
+ dev_err(data->dev, "failed to save battery capacity\n");
+
+ return ret;
+}
+
+static void sc27xx_fgu_external_power_changed(struct power_supply *psy)
+{
+ struct sc27xx_fgu_data *data = power_supply_get_drvdata(psy);
+
+ power_supply_changed(data->battery);
+}
+
+static int sc27xx_fgu_property_is_writeable(struct power_supply *psy,
+ enum power_supply_property psp)
+{
+ return psp == POWER_SUPPLY_PROP_CAPACITY;
+}
+
+static enum power_supply_property sc27xx_fgu_props[] = {
+ POWER_SUPPLY_PROP_STATUS,
+ POWER_SUPPLY_PROP_HEALTH,
+ POWER_SUPPLY_PROP_PRESENT,
+ POWER_SUPPLY_PROP_TEMP,
+ POWER_SUPPLY_PROP_TECHNOLOGY,
+ POWER_SUPPLY_PROP_CAPACITY,
+ POWER_SUPPLY_PROP_VOLTAGE_NOW,
+ POWER_SUPPLY_PROP_VOLTAGE_OCV,
+ POWER_SUPPLY_PROP_CURRENT_NOW,
+ POWER_SUPPLY_PROP_CURRENT_AVG,
+};
+
+static const struct power_supply_desc sc27xx_fgu_desc = {
+ .name = "sc27xx-fgu",
+ .type = POWER_SUPPLY_TYPE_BATTERY,
+ .properties = sc27xx_fgu_props,
+ .num_properties = ARRAY_SIZE(sc27xx_fgu_props),
+ .get_property = sc27xx_fgu_get_property,
+ .set_property = sc27xx_fgu_set_property,
+ .external_power_changed = sc27xx_fgu_external_power_changed,
+ .property_is_writeable = sc27xx_fgu_property_is_writeable,
+};
+
+static void sc27xx_fgu_adjust_cap(struct sc27xx_fgu_data *data, int cap)
+{
+ data->init_cap = cap;
+ data->init_clbcnt = sc27xx_fgu_cap_to_clbcnt(data, data->init_cap);
+}
+
+static irqreturn_t sc27xx_fgu_interrupt(int irq, void *dev_id)
+{
+ struct sc27xx_fgu_data *data = dev_id;
+ int ret, cap, ocv, adc;
+ u32 status;
+
+ mutex_lock(&data->lock);
+
+ ret = regmap_read(data->regmap, data->base + SC27XX_FGU_INT_STS,
+ &status);
+ if (ret)
+ goto out;
+
+ ret = regmap_update_bits(data->regmap, data->base + SC27XX_FGU_INT_CLR,
+ status, status);
+ if (ret)
+ goto out;
+
+ /*
+ * When low overload voltage interrupt happens, we should calibrate the
+ * battery capacity in lower voltage stage.
+ */
+ if (!(status & SC27XX_FGU_LOW_OVERLOAD_INT))
+ goto out;
+
+ ret = sc27xx_fgu_get_capacity(data, &cap);
+ if (ret)
+ goto out;
+
+ ret = sc27xx_fgu_get_vbat_ocv(data, &ocv);
+ if (ret)
+ goto out;
+
+ /*
+ * If current OCV value is less than the minimum OCV value in OCV table,
+ * which means now battery capacity is 0%, and we should adjust the
+ * inititial capacity to 0.
+ */
+ if (ocv <= data->cap_table[data->table_len - 1].ocv) {
+ sc27xx_fgu_adjust_cap(data, 0);
+ } else if (ocv <= data->min_volt) {
+ /*
+ * If current OCV value is less than the low alarm voltage, but
+ * current capacity is larger than the alarm capacity, we should
+ * adjust the inititial capacity to alarm capacity.
+ */
+ if (cap > data->alarm_cap) {
+ sc27xx_fgu_adjust_cap(data, data->alarm_cap);
+ } else if (cap <= 0) {
+ int cur_cap;
+
+ /*
+ * If current capacity is equal with 0 or less than 0
+ * (some error occurs), we should adjust inititial
+ * capacity to the capacity corresponding to current OCV
+ * value.
+ */
+ cur_cap = power_supply_ocv2cap_simple(data->cap_table,
+ data->table_len,
+ ocv);
+ sc27xx_fgu_adjust_cap(data, cur_cap);
+ }
+
+ /*
+ * After adjusting the battery capacity, we should set the
+ * lowest alarm voltage instead.
+ */
+ data->min_volt = data->cap_table[data->table_len - 1].ocv;
+ adc = sc27xx_fgu_voltage_to_adc(data, data->min_volt / 1000);
+ regmap_update_bits(data->regmap, data->base + SC27XX_FGU_LOW_OVERLOAD,
+ SC27XX_FGU_LOW_OVERLOAD_MASK, adc);
+ }
+
+out:
+ mutex_unlock(&data->lock);
+
+ power_supply_changed(data->battery);
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t sc27xx_fgu_bat_detection(int irq, void *dev_id)
+{
+ struct sc27xx_fgu_data *data = dev_id;
+ int state;
+
+ mutex_lock(&data->lock);
+
+ state = gpiod_get_value_cansleep(data->gpiod);
+ if (state < 0) {
+ dev_err(data->dev, "failed to get gpio state\n");
+ mutex_unlock(&data->lock);
+ return IRQ_RETVAL(state);
+ }
+
+ data->bat_present = !!state;
+
+ mutex_unlock(&data->lock);
+
+ power_supply_changed(data->battery);
+ return IRQ_HANDLED;
+}
+
+static void sc27xx_fgu_disable(void *_data)
+{
+ struct sc27xx_fgu_data *data = _data;
+
+ regmap_update_bits(data->regmap, SC27XX_CLK_EN0, SC27XX_FGU_RTC_EN, 0);
+ regmap_update_bits(data->regmap, SC27XX_MODULE_EN0, SC27XX_FGU_EN, 0);
+}
+
+static int sc27xx_fgu_cap_to_clbcnt(struct sc27xx_fgu_data *data, int capacity)
+{
+ /*
+ * Get current capacity (mAh) = battery total capacity (mAh) *
+ * current capacity percent (capacity / 100).
+ */
+ int cur_cap = DIV_ROUND_CLOSEST(data->total_cap * capacity, 100);
+
+ /*
+ * Convert current capacity (mAh) to coulomb counter according to the
+ * formula: 1 mAh =3.6 coulomb.
+ */
+ return DIV_ROUND_CLOSEST(cur_cap * 36, 10);
+}
+
+static int sc27xx_fgu_calibration(struct sc27xx_fgu_data *data)
+{
+ struct nvmem_cell *cell;
+ int calib_data, cal_4200mv;
+ void *buf;
+ size_t len;
+
+ cell = nvmem_cell_get(data->dev, "fgu_calib");
+ if (IS_ERR(cell))
+ return PTR_ERR(cell);
+
+ buf = nvmem_cell_read(cell, &len);
+ nvmem_cell_put(cell);
+
+ if (IS_ERR(buf))
+ return PTR_ERR(buf);
+
+ memcpy(&calib_data, buf, min(len, sizeof(u32)));
+
+ /*
+ * Get the ADC value corresponding to 4200 mV from eFuse controller
+ * according to below formula. Then convert to ADC values corresponding
+ * to 1000 mV and 1000 mA.
+ */
+ cal_4200mv = (calib_data & 0x1ff) + 6963 - 4096 - 256;
+ data->vol_1000mv_adc = DIV_ROUND_CLOSEST(cal_4200mv * 10, 42);
+ data->cur_1000ma_adc = data->vol_1000mv_adc * 4;
+
+ kfree(buf);
+ return 0;
+}
+
+static int sc27xx_fgu_hw_init(struct sc27xx_fgu_data *data)
+{
+ struct power_supply_battery_info info = { };
+ struct power_supply_battery_ocv_table *table;
+ int ret, delta_clbcnt, alarm_adc;
+
+ ret = power_supply_get_battery_info(data->battery, &info);
+ if (ret) {
+ dev_err(data->dev, "failed to get battery information\n");
+ return ret;
+ }
+
+ data->total_cap = info.charge_full_design_uah / 1000;
+ data->max_volt = info.constant_charge_voltage_max_uv / 1000;
+ data->internal_resist = info.factory_internal_resistance_uohm / 1000;
+ data->min_volt = info.voltage_min_design_uv;
+
+ /*
+ * For SC27XX fuel gauge device, we only use one ocv-capacity
+ * table in normal temperature 20 Celsius.
+ */
+ table = power_supply_find_ocv2cap_table(&info, 20, &data->table_len);
+ if (!table)
+ return -EINVAL;
+
+ data->cap_table = devm_kmemdup(data->dev, table,
+ data->table_len * sizeof(*table),
+ GFP_KERNEL);
+ if (!data->cap_table) {
+ power_supply_put_battery_info(data->battery, &info);
+ return -ENOMEM;
+ }
+
+ data->alarm_cap = power_supply_ocv2cap_simple(data->cap_table,
+ data->table_len,
+ data->min_volt);
+
+ power_supply_put_battery_info(data->battery, &info);
+
+ ret = sc27xx_fgu_calibration(data);
+ if (ret)
+ return ret;
+
+ /* Enable the FGU module */
+ ret = regmap_update_bits(data->regmap, SC27XX_MODULE_EN0,
+ SC27XX_FGU_EN, SC27XX_FGU_EN);
+ if (ret) {
+ dev_err(data->dev, "failed to enable fgu\n");
+ return ret;
+ }
+
+ /* Enable the FGU RTC clock to make it work */
+ ret = regmap_update_bits(data->regmap, SC27XX_CLK_EN0,
+ SC27XX_FGU_RTC_EN, SC27XX_FGU_RTC_EN);
+ if (ret) {
+ dev_err(data->dev, "failed to enable fgu RTC clock\n");
+ goto disable_fgu;
+ }
+
+ ret = regmap_update_bits(data->regmap, data->base + SC27XX_FGU_INT_CLR,
+ SC27XX_FGU_INT_MASK, SC27XX_FGU_INT_MASK);
+ if (ret) {
+ dev_err(data->dev, "failed to clear interrupt status\n");
+ goto disable_clk;
+ }
+
+ /*
+ * Set the voltage low overload threshold, which means when the battery
+ * voltage is lower than this threshold, the controller will generate
+ * one interrupt to notify.
+ */
+ alarm_adc = sc27xx_fgu_voltage_to_adc(data, data->min_volt / 1000);
+ ret = regmap_update_bits(data->regmap, data->base + SC27XX_FGU_LOW_OVERLOAD,
+ SC27XX_FGU_LOW_OVERLOAD_MASK, alarm_adc);
+ if (ret) {
+ dev_err(data->dev, "failed to set fgu low overload\n");
+ goto disable_clk;
+ }
+
+ /*
+ * Set the coulomb counter delta threshold, that means when the coulomb
+ * counter change is multiples of the delta threshold, the controller
+ * will generate one interrupt to notify the users to update the battery
+ * capacity. Now we set the delta threshold as a counter value of 1%
+ * capacity.
+ */
+ delta_clbcnt = sc27xx_fgu_cap_to_clbcnt(data, 1);
+
+ ret = regmap_update_bits(data->regmap, data->base + SC27XX_FGU_CLBCNT_DELTL,
+ SC27XX_FGU_CLBCNT_MASK, delta_clbcnt);
+ if (ret) {
+ dev_err(data->dev, "failed to set low delta coulomb counter\n");
+ goto disable_clk;
+ }
+
+ ret = regmap_update_bits(data->regmap, data->base + SC27XX_FGU_CLBCNT_DELTH,
+ SC27XX_FGU_CLBCNT_MASK,
+ delta_clbcnt >> SC27XX_FGU_CLBCNT_SHIFT);
+ if (ret) {
+ dev_err(data->dev, "failed to set high delta coulomb counter\n");
+ goto disable_clk;
+ }
+
+ /*
+ * Get the boot battery capacity when system powers on, which is used to
+ * initialize the coulomb counter. After that, we can read the coulomb
+ * counter to measure the battery capacity.
+ */
+ ret = sc27xx_fgu_get_boot_capacity(data, &data->init_cap);
+ if (ret) {
+ dev_err(data->dev, "failed to get boot capacity\n");
+ goto disable_clk;
+ }
+
+ /*
+ * Convert battery capacity to the corresponding initial coulomb counter
+ * and set into coulomb counter registers.
+ */
+ data->init_clbcnt = sc27xx_fgu_cap_to_clbcnt(data, data->init_cap);
+ ret = sc27xx_fgu_set_clbcnt(data, data->init_clbcnt);
+ if (ret) {
+ dev_err(data->dev, "failed to initialize coulomb counter\n");
+ goto disable_clk;
+ }
+
+ return 0;
+
+disable_clk:
+ regmap_update_bits(data->regmap, SC27XX_CLK_EN0, SC27XX_FGU_RTC_EN, 0);
+disable_fgu:
+ regmap_update_bits(data->regmap, SC27XX_MODULE_EN0, SC27XX_FGU_EN, 0);
+
+ return ret;
+}
+
+static int sc27xx_fgu_probe(struct platform_device *pdev)
+{
+ struct device_node *np = pdev->dev.of_node;
+ struct power_supply_config fgu_cfg = { };
+ struct sc27xx_fgu_data *data;
+ int ret, irq;
+
+ data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
+ if (!data)
+ return -ENOMEM;
+
+ data->regmap = dev_get_regmap(pdev->dev.parent, NULL);
+ if (!data->regmap) {
+ dev_err(&pdev->dev, "failed to get regmap\n");
+ return -ENODEV;
+ }
+
+ ret = device_property_read_u32(&pdev->dev, "reg", &data->base);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to get fgu address\n");
+ return ret;
+ }
+
+ data->channel = devm_iio_channel_get(&pdev->dev, "bat-temp");
+ if (IS_ERR(data->channel)) {
+ dev_err(&pdev->dev, "failed to get IIO channel\n");
+ return PTR_ERR(data->channel);
+ }
+
+ data->gpiod = devm_gpiod_get(&pdev->dev, "bat-detect", GPIOD_IN);
+ if (IS_ERR(data->gpiod)) {
+ dev_err(&pdev->dev, "failed to get battery detection GPIO\n");
+ return PTR_ERR(data->gpiod);
+ }
+
+ ret = gpiod_get_value_cansleep(data->gpiod);
+ if (ret < 0) {
+ dev_err(&pdev->dev, "failed to get gpio state\n");
+ return ret;
+ }
+
+ data->bat_present = !!ret;
+ mutex_init(&data->lock);
+ data->dev = &pdev->dev;
+ platform_set_drvdata(pdev, data);
+
+ fgu_cfg.drv_data = data;
+ fgu_cfg.of_node = np;
+ data->battery = devm_power_supply_register(&pdev->dev, &sc27xx_fgu_desc,
+ &fgu_cfg);
+ if (IS_ERR(data->battery)) {
+ dev_err(&pdev->dev, "failed to register power supply\n");
+ return PTR_ERR(data->battery);
+ }
+
+ ret = sc27xx_fgu_hw_init(data);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to initialize fgu hardware\n");
+ return ret;
+ }
+
+ ret = devm_add_action(&pdev->dev, sc27xx_fgu_disable, data);
+ if (ret) {
+ sc27xx_fgu_disable(data);
+ dev_err(&pdev->dev, "failed to add fgu disable action\n");
+ return ret;
+ }
+
+ irq = platform_get_irq(pdev, 0);
+ if (irq < 0) {
+ dev_err(&pdev->dev, "no irq resource specified\n");
+ return irq;
+ }
+
+ ret = devm_request_threaded_irq(data->dev, irq, NULL,
+ sc27xx_fgu_interrupt,
+ IRQF_NO_SUSPEND | IRQF_ONESHOT,
+ pdev->name, data);
+ if (ret) {
+ dev_err(data->dev, "failed to request fgu IRQ\n");
+ return ret;
+ }
+
+ irq = gpiod_to_irq(data->gpiod);
+ if (irq < 0) {
+ dev_err(&pdev->dev, "failed to translate GPIO to IRQ\n");
+ return irq;
+ }
+
+ ret = devm_request_threaded_irq(&pdev->dev, irq, NULL,
+ sc27xx_fgu_bat_detection,
+ IRQF_ONESHOT | IRQF_TRIGGER_RISING |
+ IRQF_TRIGGER_FALLING,
+ pdev->name, data);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to request IRQ\n");
+ return ret;
+ }
+
+ return 0;
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int sc27xx_fgu_resume(struct device *dev)
+{
+ struct sc27xx_fgu_data *data = dev_get_drvdata(dev);
+ int ret;
+
+ ret = regmap_update_bits(data->regmap, data->base + SC27XX_FGU_INT_EN,
+ SC27XX_FGU_LOW_OVERLOAD_INT |
+ SC27XX_FGU_CLBCNT_DELTA_INT, 0);
+ if (ret) {
+ dev_err(data->dev, "failed to disable fgu interrupts\n");
+ return ret;
+ }
+
+ return 0;
+}
+
+static int sc27xx_fgu_suspend(struct device *dev)
+{
+ struct sc27xx_fgu_data *data = dev_get_drvdata(dev);
+ int ret, status, ocv;
+
+ ret = sc27xx_fgu_get_status(data, &status);
+ if (ret)
+ return ret;
+
+ /*
+ * If we are charging, then no need to enable the FGU interrupts to
+ * adjust the battery capacity.
+ */
+ if (status != POWER_SUPPLY_STATUS_NOT_CHARGING)
+ return 0;
+
+ ret = regmap_update_bits(data->regmap, data->base + SC27XX_FGU_INT_EN,
+ SC27XX_FGU_LOW_OVERLOAD_INT,
+ SC27XX_FGU_LOW_OVERLOAD_INT);
+ if (ret) {
+ dev_err(data->dev, "failed to enable low voltage interrupt\n");
+ return ret;
+ }
+
+ ret = sc27xx_fgu_get_vbat_ocv(data, &ocv);
+ if (ret)
+ goto disable_int;
+
+ /*
+ * If current OCV is less than the minimum voltage, we should enable the
+ * coulomb counter threshold interrupt to notify events to adjust the
+ * battery capacity.
+ */
+ if (ocv < data->min_volt) {
+ ret = regmap_update_bits(data->regmap,
+ data->base + SC27XX_FGU_INT_EN,
+ SC27XX_FGU_CLBCNT_DELTA_INT,
+ SC27XX_FGU_CLBCNT_DELTA_INT);
+ if (ret) {
+ dev_err(data->dev,
+ "failed to enable coulomb threshold int\n");
+ goto disable_int;
+ }
+ }
+
+ return 0;
+
+disable_int:
+ regmap_update_bits(data->regmap, data->base + SC27XX_FGU_INT_EN,
+ SC27XX_FGU_LOW_OVERLOAD_INT, 0);
+ return ret;
+}
+#endif
+
+static const struct dev_pm_ops sc27xx_fgu_pm_ops = {
+ SET_SYSTEM_SLEEP_PM_OPS(sc27xx_fgu_suspend, sc27xx_fgu_resume)
+};
+
+static const struct of_device_id sc27xx_fgu_of_match[] = {
+ { .compatible = "sprd,sc2731-fgu", },
+ { }
+};
+
+static struct platform_driver sc27xx_fgu_driver = {
+ .probe = sc27xx_fgu_probe,
+ .driver = {
+ .name = "sc27xx-fgu",
+ .of_match_table = sc27xx_fgu_of_match,
+ .pm = &sc27xx_fgu_pm_ops,
+ }
+};
+
+module_platform_driver(sc27xx_fgu_driver);
+
+MODULE_DESCRIPTION("Spreadtrum SC27XX PMICs Fual Gauge Unit Driver");
+MODULE_LICENSE("GPL v2");
#define AXP288_RT_BATT_V_H 0xa0
#define AXP288_RT_BATT_V_L 0xa1
+#define AXP813_ACIN_PATH_CTRL 0x3a
#define AXP813_ADC_RATE 0x85
/* Fuel Gauge */
struct charger_cable *cables;
int num_cables;
- struct attribute_group attr_g;
+ struct attribute_group attr_grp;
struct device_attribute attr_name;
struct device_attribute attr_state;
struct device_attribute attr_externally_control;
int num_charger_regulators;
struct charger_regulator *charger_regulators;
+ const struct attribute_group **sysfs_groups;
const char *psy_fuel_gauge;
/* Driver private data */
void *drv_data;
+ /* Device specific sysfs attributes */
+ const struct attribute_group **attr_grp;
+
char **supplied_to;
size_t num_supplicants;
};
int use_for_apm;
};
+struct power_supply_battery_ocv_table {
+ int ocv; /* microVolts */
+ int capacity; /* percent */
+};
+
+#define POWER_SUPPLY_OCV_TEMP_MAX 20
+
/*
* This is the recommended struct to manage static battery parameters,
* populated by power_supply_get_battery_info(). Most platform drivers should
int charge_term_current_ua; /* microAmps */
int constant_charge_current_max_ua; /* microAmps */
int constant_charge_voltage_max_uv; /* microVolts */
+ int factory_internal_resistance_uohm; /* microOhms */
+ int ocv_temp[POWER_SUPPLY_OCV_TEMP_MAX];/* celsius */
+ struct power_supply_battery_ocv_table *ocv_table[POWER_SUPPLY_OCV_TEMP_MAX];
+ int ocv_table_size[POWER_SUPPLY_OCV_TEMP_MAX];
};
extern struct atomic_notifier_head power_supply_notifier;
extern int power_supply_get_battery_info(struct power_supply *psy,
struct power_supply_battery_info *info);
+extern void power_supply_put_battery_info(struct power_supply *psy,
+ struct power_supply_battery_info *info);
+extern int power_supply_ocv2cap_simple(struct power_supply_battery_ocv_table *table,
+ int table_len, int ocv);
+extern struct power_supply_battery_ocv_table *
+power_supply_find_ocv2cap_table(struct power_supply_battery_info *info,
+ int temp, int *table_len);
+extern int power_supply_batinfo_ocv2cap(struct power_supply_battery_info *info,
+ int ocv, int temp);
extern void power_supply_changed(struct power_supply *psy);
extern int power_supply_am_i_supplied(struct power_supply *psy);
extern int power_supply_set_input_current_limit_from_supplier(
OSDN Git Service
