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-rw-r--r--drivers/power/supply/Kconfig14
-rw-r--r--drivers/power/supply/Makefile2
-rw-r--r--drivers/power/supply/pf1550_charger.c656
-rw-r--r--drivers/power/supply/sabresd_battery.c1014
4 files changed, 1686 insertions, 0 deletions
diff --git a/drivers/power/supply/Kconfig b/drivers/power/supply/Kconfig
index 76806a0be820..e7407876da8b 100644
--- a/drivers/power/supply/Kconfig
+++ b/drivers/power/supply/Kconfig
@@ -281,6 +281,12 @@ config CHARGER_PCF50633
help
Say Y to include support for NXP PCF50633 Main Battery Charger.
+config CHARGER_PF1550
+ tristate "Freescale PF1550 battery charger driver"
+ depends on MFD_PF1550
+ help
+ Say Y to enable support for the Freescale PF1550 battery charger.
+
config BATTERY_JZ4740
tristate "Ingenic JZ4740 battery"
depends on MACH_JZ4740
@@ -511,4 +517,12 @@ config AXP20X_POWER
This driver provides support for the power supply features of
AXP20x PMIC.
+config SABRESD_MAX8903
+ tristate "Sabresd Board Battery DC-DC Charger for USB and Adapter Power"
+ depends on TOUCHSCREEN_MAX11801
+ help
+ Say Y to enable support for the MAX8903 DC-DC charger and sysfs on
+ sabresd board.The driver supports controlling charger and battery
+ based on the status of charger connections with interrupt handlers.
+
endif # POWER_SUPPLY
diff --git a/drivers/power/supply/Makefile b/drivers/power/supply/Makefile
index 36c599d9a495..110df86baebb 100644
--- a/drivers/power/supply/Makefile
+++ b/drivers/power/supply/Makefile
@@ -46,11 +46,13 @@ obj-$(CONFIG_BATTERY_S3C_ADC) += s3c_adc_battery.o
obj-$(CONFIG_BATTERY_TWL4030_MADC) += twl4030_madc_battery.o
obj-$(CONFIG_CHARGER_88PM860X) += 88pm860x_charger.o
obj-$(CONFIG_CHARGER_PCF50633) += pcf50633-charger.o
+obj-$(CONFIG_CHARGER_PF1550) += pf1550_charger.o
obj-$(CONFIG_BATTERY_JZ4740) += jz4740-battery.o
obj-$(CONFIG_BATTERY_INTEL_MID) += intel_mid_battery.o
obj-$(CONFIG_BATTERY_RX51) += rx51_battery.o
obj-$(CONFIG_AB8500_BM) += ab8500_bmdata.o ab8500_charger.o ab8500_fg.o ab8500_btemp.o abx500_chargalg.o pm2301_charger.o
obj-$(CONFIG_CHARGER_ISP1704) += isp1704_charger.o
+obj-$(CONFIG_SABRESD_MAX8903) += sabresd_battery.o
obj-$(CONFIG_CHARGER_MAX8903) += max8903_charger.o
obj-$(CONFIG_CHARGER_TWL4030) += twl4030_charger.o
obj-$(CONFIG_CHARGER_LP8727) += lp8727_charger.o
diff --git a/drivers/power/supply/pf1550_charger.c b/drivers/power/supply/pf1550_charger.c
new file mode 100644
index 000000000000..d14ef2b29ffd
--- /dev/null
+++ b/drivers/power/supply/pf1550_charger.c
@@ -0,0 +1,656 @@
+/*
+ * pf1550_charger.c - regulator driver for the PF1550
+ *
+ * Copyright (C) 2016 Freescale Semiconductor, Inc.
+ * Robin Gong <yibin.gong@freescale.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/interrupt.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/power_supply.h>
+#include <linux/regmap.h>
+#include <linux/mfd/pf1550.h>
+
+#define PF1550_CHARGER_NAME "pf1550-charger"
+#define PF1550_DEFAULT_CONSTANT_VOLT 4200000
+#define PF1550_DEFAULT_MIN_SYSTEM_VOLT 3500000
+#define PF1550_DEFAULT_THERMAL_TEMP 75
+
+static const char *pf1550_charger_model = "PF1550";
+static const char *pf1550_charger_manufacturer = "Freescale";
+
+struct pf1550_charger {
+ struct device *dev;
+ struct pf1550_dev *pf1550;
+ struct power_supply *charger;
+ struct power_supply_desc psy_desc;
+ int irq;
+ struct delayed_work irq_work;
+ struct mutex mutex;
+
+ u32 constant_volt;
+ u32 min_system_volt;
+ u32 thermal_regulation_temp;
+};
+
+static struct pf1550_irq_info pf1550_charger_irqs[] = {
+ { PF1550_CHARG_IRQ_BAT2SOCI, "BAT2SOC" },
+ { PF1550_CHARG_IRQ_BATI, "BAT" },
+ { PF1550_CHARG_IRQ_CHGI, "CHG" },
+ { PF1550_CHARG_IRQ_VBUSI, "VBUS" },
+ { PF1550_CHARG_IRQ_THMI, "THM" },
+};
+
+static int pf1550_get_charger_state(struct regmap *regmap, int *val)
+{
+ int ret;
+ unsigned int data;
+
+ ret = regmap_read(regmap, PF1550_CHARG_REG_CHG_SNS, &data);
+ if (ret < 0)
+ return ret;
+
+ data &= PF1550_CHG_SNS_MASK;
+
+ switch (data) {
+ case PF1550_CHG_PRECHARGE:
+ case PF1550_CHG_CONSTANT_CURRENT:
+ case PF1550_CHG_CONSTANT_VOL:
+ case PF1550_CHG_EOC:
+ *val = POWER_SUPPLY_STATUS_CHARGING;
+ break;
+ case PF1550_CHG_DONE:
+ *val = POWER_SUPPLY_STATUS_FULL;
+ break;
+ case PF1550_CHG_TIMER_FAULT:
+ case PF1550_CHG_SUSPEND:
+ *val = POWER_SUPPLY_STATUS_NOT_CHARGING;
+ break;
+ case PF1550_CHG_OFF_INV:
+ case PF1550_CHG_OFF_TEMP:
+ case PF1550_CHG_LINEAR_ONLY:
+ *val = POWER_SUPPLY_STATUS_DISCHARGING;
+ break;
+ default:
+ *val = POWER_SUPPLY_STATUS_UNKNOWN;
+ }
+
+ return 0;
+}
+
+static int pf1550_get_charge_type(struct regmap *regmap, int *val)
+{
+ int ret;
+ unsigned int data;
+
+ ret = regmap_read(regmap, PF1550_CHARG_REG_CHG_SNS, &data);
+ if (ret < 0)
+ return ret;
+
+ data &= PF1550_CHG_SNS_MASK;
+
+ switch (data) {
+ case PF1550_CHG_SNS_MASK:
+ *val = POWER_SUPPLY_CHARGE_TYPE_TRICKLE;
+ break;
+ case PF1550_CHG_CONSTANT_CURRENT:
+ case PF1550_CHG_CONSTANT_VOL:
+ case PF1550_CHG_EOC:
+ *val = POWER_SUPPLY_CHARGE_TYPE_FAST;
+ break;
+ case PF1550_CHG_DONE:
+ case PF1550_CHG_TIMER_FAULT:
+ case PF1550_CHG_SUSPEND:
+ case PF1550_CHG_OFF_INV:
+ case PF1550_CHG_BAT_OVER:
+ case PF1550_CHG_OFF_TEMP:
+ case PF1550_CHG_LINEAR_ONLY:
+ *val = POWER_SUPPLY_CHARGE_TYPE_NONE;
+ break;
+ default:
+ *val = POWER_SUPPLY_CHARGE_TYPE_UNKNOWN;
+ }
+
+ return 0;
+}
+
+/*
+ * Supported health statuses:
+ * - POWER_SUPPLY_HEALTH_DEAD
+ * - POWER_SUPPLY_HEALTH_GOOD
+ * - POWER_SUPPLY_HEALTH_OVERVOLTAGE
+ * - POWER_SUPPLY_HEALTH_UNKNOWN
+ */
+static int pf1550_get_battery_health(struct regmap *regmap, int *val)
+{
+ int ret;
+ unsigned int data;
+
+ ret = regmap_read(regmap, PF1550_CHARG_REG_BATT_SNS, &data);
+ if (ret < 0)
+ return ret;
+
+ data &= PF1550_BAT_SNS_MASK;
+
+ switch (data) {
+ case PF1550_BAT_NO_DETECT:
+ *val = POWER_SUPPLY_HEALTH_DEAD;
+ break;
+ case PF1550_BAT_NO_VBUS:
+ case PF1550_BAT_LOW_THAN_PRECHARG:
+ case PF1550_BAT_CHARG_FAIL:
+ case PF1550_BAT_HIGH_THAN_PRECHARG:
+ *val = POWER_SUPPLY_HEALTH_GOOD;
+ break;
+ case PF1550_BAT_OVER_VOL:
+ *val = POWER_SUPPLY_HEALTH_OVERVOLTAGE;
+ break;
+ default:
+ *val = POWER_SUPPLY_HEALTH_UNKNOWN;
+ break;
+ }
+
+ return 0;
+}
+
+static int pf1550_get_present(struct regmap *regmap, int *val)
+{
+ unsigned int data;
+ int ret;
+
+ ret = regmap_read(regmap, PF1550_CHARG_REG_BATT_SNS, &data);
+ if (ret < 0)
+ return ret;
+
+ data &= PF1550_BAT_SNS_MASK;
+ *val = (data == PF1550_BAT_NO_DETECT) ? 0 : 1;
+
+ return 0;
+}
+
+static int pf1550_get_online(struct regmap *regmap, int *val)
+{
+ unsigned int data;
+ int ret;
+
+ ret = regmap_read(regmap, PF1550_CHARG_REG_VBUS_SNS, &data);
+ if (ret < 0)
+ return ret;
+
+ *val = (data & PF1550_VBUS_VALID) ? 1 : 0;
+
+ return 0;
+}
+
+static void pf1550_chg_bat_isr(struct pf1550_charger *chg)
+{
+ unsigned int data;
+
+ if (regmap_read(chg->pf1550->regmap, PF1550_CHARG_REG_BATT_SNS, &data)) {
+ dev_err(chg->dev, "Read BATT_SNS error.\n");
+ return;
+ }
+
+ switch (data & PF1550_BAT_SNS_MASK) {
+ case PF1550_BAT_NO_VBUS:
+ dev_dbg(chg->dev, "No valid VBUS input.\n");
+ break;
+ case PF1550_BAT_LOW_THAN_PRECHARG:
+ dev_dbg(chg->dev, "VBAT < VPRECHG.LB.\n");
+ break;
+ case PF1550_BAT_CHARG_FAIL:
+ dev_dbg(chg->dev, "Battery charging failed.\n");
+ break;
+ case PF1550_BAT_HIGH_THAN_PRECHARG:
+ dev_dbg(chg->dev, "VBAT > VPRECHG.LB.\n");
+ break;
+ case PF1550_BAT_OVER_VOL:
+ dev_dbg(chg->dev, "VBAT > VBATOV.\n");
+ break;
+ case PF1550_BAT_NO_DETECT:
+ dev_dbg(chg->dev, "Battery not detected.\n");
+ break;
+ default:
+ dev_err(chg->dev, "Unknown value read:%x\n",
+ data & PF1550_CHG_SNS_MASK);
+ }
+}
+
+static void pf1550_chg_chg_isr(struct pf1550_charger *chg)
+{
+ unsigned int data;
+
+ if (regmap_read(chg->pf1550->regmap, PF1550_CHARG_REG_CHG_SNS, &data)) {
+ dev_err(chg->dev, "Read CHG_SNS error.\n");
+ return;
+ }
+
+ switch (data & PF1550_CHG_SNS_MASK) {
+ case PF1550_CHG_PRECHARGE:
+ dev_dbg(chg->dev, "In pre-charger mode.\n");
+ break;
+ case PF1550_CHG_CONSTANT_CURRENT:
+ dev_dbg(chg->dev, "In fast-charge constant current mode.\n");
+ break;
+ case PF1550_CHG_CONSTANT_VOL:
+ dev_dbg(chg->dev, "In fast-charge constant voltage mode.\n");
+ break;
+ case PF1550_CHG_EOC:
+ dev_dbg(chg->dev, "In EOC mode.\n");
+ break;
+ case PF1550_CHG_DONE:
+ dev_dbg(chg->dev, "In DONE mode.\n");
+ break;
+ case PF1550_CHG_TIMER_FAULT:
+ dev_info(chg->dev, "In timer fault mode.\n");
+ break;
+ case PF1550_CHG_SUSPEND:
+ dev_info(chg->dev, "In thermistor suspend mode.\n");
+ break;
+ case PF1550_CHG_OFF_INV:
+ dev_info(chg->dev, "Input invalid, charger off.\n");
+ break;
+ case PF1550_CHG_BAT_OVER:
+ dev_info(chg->dev, "Battery over-voltage.\n");
+ break;
+ case PF1550_CHG_OFF_TEMP:
+ dev_info(chg->dev, "Temp high, charger off.\n");
+ break;
+ case PF1550_CHG_LINEAR_ONLY:
+ dev_dbg(chg->dev, "In Linear mode, not charging.\n");
+ break;
+ default:
+ dev_err(chg->dev, "Unknown value read:%x\n",
+ data & PF1550_CHG_SNS_MASK);
+ }
+}
+
+static void pf1550_chg_vbus_isr(struct pf1550_charger *chg)
+{
+ enum power_supply_type old_type;
+ unsigned int data;
+
+ if (regmap_read(chg->pf1550->regmap, PF1550_CHARG_REG_VBUS_SNS, &data)) {
+ dev_err(chg->dev, "Read VBUS_SNS error.\n");
+ return;
+ }
+
+ old_type = chg->psy_desc.type;
+
+ if (data & PF1550_VBUS_UVLO) {
+ chg->psy_desc.type = POWER_SUPPLY_TYPE_BATTERY;
+ dev_dbg(chg->dev, "VBUS deattached.\n");
+ }
+ if (data & PF1550_VBUS_IN2SYS)
+ dev_dbg(chg->dev, "VBUS_IN2SYS_SNS.\n");
+ if (data & PF1550_VBUS_OVLO)
+ dev_dbg(chg->dev, "VBUS_OVLO_SNS.\n");
+ if (data & PF1550_VBUS_VALID) {
+ chg->psy_desc.type = POWER_SUPPLY_TYPE_MAINS;
+ dev_dbg(chg->dev, "VBUS attached.\n");
+ }
+
+ if (old_type != chg->psy_desc.type)
+ power_supply_changed(chg->charger);
+}
+
+static irqreturn_t pf1550_charger_irq_handler(int irq, void *data)
+{
+ struct pf1550_charger *chg = data;
+
+ chg->irq = irq;
+ schedule_delayed_work(&chg->irq_work, msecs_to_jiffies(10));
+
+ return IRQ_HANDLED;
+}
+
+static void pf1550_charger_irq_work(struct work_struct *work)
+{
+ struct pf1550_charger *chg = container_of(to_delayed_work(work),
+ struct pf1550_charger,
+ irq_work);
+ int i, irq_type = -1;
+ unsigned int status;
+
+ if (!chg->charger)
+ return;
+
+ mutex_lock(&chg->mutex);
+
+ for (i = 0; i < ARRAY_SIZE(pf1550_charger_irqs); i++)
+ if (chg->irq == pf1550_charger_irqs[i].virq)
+ irq_type = pf1550_charger_irqs[i].irq;
+
+ switch (irq_type) {
+ case PF1550_CHARG_IRQ_BAT2SOCI:
+ dev_info(chg->dev, "BAT to SYS Overcurrent interrupt.\n");
+ break;
+ case PF1550_CHARG_IRQ_BATI:
+ pf1550_chg_bat_isr(chg);
+ break;
+ case PF1550_CHARG_IRQ_CHGI:
+ pf1550_chg_chg_isr(chg);
+ break;
+ case PF1550_CHARG_IRQ_VBUSI:
+ pf1550_chg_vbus_isr(chg);
+ break;
+ case PF1550_CHARG_IRQ_THMI:
+ dev_info(chg->dev, "Thermal interrupt.\n");
+ break;
+ default:
+ dev_err(chg->dev, "unknown interrupt occurred.\n");
+ }
+
+ if (regmap_read(chg->pf1550->regmap, PF1550_CHARG_REG_CHG_INT, &status))
+ dev_err(chg->dev, "Read CHG_INT error.\n");
+ if (regmap_write(chg->pf1550->regmap, PF1550_CHARG_REG_CHG_INT, status))
+ dev_err(chg->dev, "clear CHG_INT error.\n");
+
+ mutex_unlock(&chg->mutex);
+}
+
+static enum power_supply_property pf1550_charger_props[] = {
+ POWER_SUPPLY_PROP_STATUS,
+ POWER_SUPPLY_PROP_CHARGE_TYPE,
+ POWER_SUPPLY_PROP_HEALTH,
+ POWER_SUPPLY_PROP_PRESENT,
+ POWER_SUPPLY_PROP_ONLINE,
+ POWER_SUPPLY_PROP_MODEL_NAME,
+ POWER_SUPPLY_PROP_MANUFACTURER,
+};
+
+static int pf1550_charger_get_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ struct pf1550_charger *chg = power_supply_get_drvdata(psy);
+ struct regmap *regmap = chg->pf1550->regmap;
+ int ret = 0;
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_STATUS:
+ ret = pf1550_get_charger_state(regmap, &val->intval);
+ break;
+ case POWER_SUPPLY_PROP_CHARGE_TYPE:
+ ret = pf1550_get_charge_type(regmap, &val->intval);
+ break;
+ case POWER_SUPPLY_PROP_HEALTH:
+ ret = pf1550_get_battery_health(regmap, &val->intval);
+ break;
+ case POWER_SUPPLY_PROP_PRESENT:
+ ret = pf1550_get_present(regmap, &val->intval);
+ break;
+ case POWER_SUPPLY_PROP_ONLINE:
+ ret = pf1550_get_online(regmap, &val->intval);
+ break;
+ case POWER_SUPPLY_PROP_MODEL_NAME:
+ val->strval = pf1550_charger_model;
+ break;
+ case POWER_SUPPLY_PROP_MANUFACTURER:
+ val->strval = pf1550_charger_manufacturer;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return ret;
+}
+
+static int pf1550_set_constant_volt(struct pf1550_charger *chg,
+ unsigned int uvolt)
+{
+ unsigned int data;
+
+ if (uvolt >= 3500000 && uvolt <= 4440000)
+ data = 8 + (uvolt - 3500000) / 20000;
+ else {
+ dev_err(chg->dev, "Wrong value for constant voltage\n");
+ return -EINVAL;
+ }
+
+ dev_dbg(chg->dev, "Charging constant voltage: %u (0x%x)\n", uvolt,
+ data);
+
+ return regmap_update_bits(chg->pf1550->regmap,
+ PF1550_CHARG_REG_BATT_REG,
+ PF1550_CHARG_REG_BATT_REG_CHGCV_MASK, data);
+}
+
+static int pf1550_set_min_system_volt(struct pf1550_charger *chg,
+ unsigned int uvolt)
+{
+ unsigned int data;
+
+ switch (uvolt) {
+ case 3500000:
+ data = 0x0;
+ break;
+ case 3700000:
+ data = 0x1;
+ break;
+ case 4300000:
+ data = 0x2;
+ break;
+ default:
+ dev_err(chg->dev, "Wrong value for minimum system voltage\n");
+ return -EINVAL;
+ }
+
+ data <<= PF1550_CHARG_REG_BATT_REG_VMINSYS_SHIFT;
+
+ dev_dbg(chg->dev, "Minimum system regulation voltage: %u (0x%x)\n",
+ uvolt, data);
+
+ return regmap_update_bits(chg->pf1550->regmap,
+ PF1550_CHARG_REG_BATT_REG,
+ PF1550_CHARG_REG_BATT_REG_VMINSYS_MASK, data);
+}
+
+static int pf1550_set_thermal_regulation_temp(struct pf1550_charger *chg,
+ unsigned int cels)
+{
+ unsigned int data;
+
+ switch (cels) {
+ case 60:
+ data = 0x0;
+ break;
+ case 75:
+ data = 0x1;
+ break;
+ case 90:
+ data = 0x2;
+ break;
+ case 105:
+ data = 0x3;
+ break;
+ default:
+ dev_err(chg->dev, "Wrong value for thermal temperature\n");
+ return -EINVAL;
+ }
+
+ data <<= PF1550_CHARG_REG_THM_REG_CNFG_REGTEMP_SHIFT;
+
+ dev_dbg(chg->dev, "Thermal regulation loop temperature: %u (0x%x)\n",
+ cels, data);
+
+ return regmap_update_bits(chg->pf1550->regmap,
+ PF1550_CHARG_REG_THM_REG_CNFG,
+ PF1550_CHARG_REG_THM_REG_CNFG_REGTEMP_MASK, data);
+}
+
+/*
+ * Sets charger registers to proper and safe default values.
+ */
+static int pf1550_reg_init(struct pf1550_charger *chg)
+{
+ int ret;
+ unsigned int data;
+
+ /* Unmask charger interrupt, mask DPMI and reserved bit */
+ ret = regmap_write(chg->pf1550->regmap, PF1550_CHARG_REG_CHG_INT_MASK,
+ 0x51);
+ if (ret) {
+ dev_err(chg->dev, "Error unmask charger interrupt: %d\n", ret);
+ return ret;
+ }
+
+ ret = regmap_read(chg->pf1550->regmap, PF1550_CHARG_REG_VBUS_SNS,
+ &data);
+ if (ret) {
+ dev_err(chg->dev, "Read charg vbus_sns error: %d\n", ret);
+ return ret;
+ }
+
+ if (data & PF1550_VBUS_VALID)
+ chg->psy_desc.type = POWER_SUPPLY_TYPE_MAINS;
+
+ ret = pf1550_set_constant_volt(chg, chg->constant_volt);
+ if (ret)
+ return ret;
+
+ ret = pf1550_set_min_system_volt(chg, chg->min_system_volt);
+ if (ret)
+ return ret;
+
+ ret = pf1550_set_thermal_regulation_temp(chg,
+ chg->thermal_regulation_temp);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+static int pf1550_dt_init(struct device *dev, struct pf1550_charger *chg)
+{
+ struct device_node *np = dev->of_node;
+
+ if (!np) {
+ dev_err(dev, "no charger OF node\n");
+ return -EINVAL;
+ }
+
+ if (of_property_read_u32(np, "fsl,constant-microvolt",
+ &chg->constant_volt))
+ chg->constant_volt = PF1550_DEFAULT_CONSTANT_VOLT;
+
+ if (of_property_read_u32(np, "fsl,min-system-microvolt",
+ &chg->min_system_volt))
+ chg->min_system_volt = PF1550_DEFAULT_MIN_SYSTEM_VOLT;
+
+ if (of_property_read_u32(np, "fsl,thermal-regulation",
+ &chg->thermal_regulation_temp))
+ chg->thermal_regulation_temp = PF1550_DEFAULT_THERMAL_TEMP;
+
+ return 0;
+}
+
+static int pf1550_charger_probe(struct platform_device *pdev)
+{
+ struct pf1550_charger *chg;
+ struct power_supply_config psy_cfg = {};
+ struct pf1550_dev *pf1550 = dev_get_drvdata(pdev->dev.parent);
+ int i, ret;
+
+ chg = devm_kzalloc(&pdev->dev, sizeof(*chg), GFP_KERNEL);
+ if (!chg)
+ return -ENOMEM;
+
+ chg->dev = &pdev->dev;
+ chg->pf1550 = pf1550;
+
+ platform_set_drvdata(pdev, chg);
+
+ ret = pf1550_dt_init(&pdev->dev, chg);
+ if (ret)
+ return ret;
+
+ mutex_init(&chg->mutex);
+
+ INIT_DELAYED_WORK(&chg->irq_work, pf1550_charger_irq_work);
+
+ for (i = 0; i < ARRAY_SIZE(pf1550_charger_irqs); i++) {
+ struct pf1550_irq_info *charger_irq =
+ &pf1550_charger_irqs[i];
+ unsigned int virq = 0;
+
+ virq = regmap_irq_get_virq(pf1550->irq_data_charger,
+ charger_irq->irq);
+ if (!virq)
+ return -EINVAL;
+
+ charger_irq->virq = virq;
+
+ ret = devm_request_threaded_irq(&pdev->dev, virq, NULL,
+ pf1550_charger_irq_handler,
+ IRQF_NO_SUSPEND,
+ charger_irq->name, chg);
+ if (ret) {
+ dev_err(&pdev->dev,
+ "failed: irq request (IRQ: %d, error :%d)\n",
+ charger_irq->irq, ret);
+ return ret;
+ }
+ }
+
+ psy_cfg.drv_data = chg;
+
+ chg->psy_desc.name = PF1550_CHARGER_NAME;
+ chg->psy_desc.type = POWER_SUPPLY_TYPE_BATTERY;
+ chg->psy_desc.get_property = pf1550_charger_get_property;
+ chg->psy_desc.properties = pf1550_charger_props;
+ chg->psy_desc.num_properties = ARRAY_SIZE(pf1550_charger_props);
+
+ chg->charger = power_supply_register(&pdev->dev, &chg->psy_desc,
+ &psy_cfg);
+ if (IS_ERR(chg->charger)) {
+ dev_err(&pdev->dev, "failed: power supply register\n");
+ ret = PTR_ERR(chg->charger);
+ return ret;
+ }
+
+ ret = pf1550_reg_init(chg);
+
+ return ret;
+}
+
+static int pf1550_charger_remove(struct platform_device *pdev)
+{
+ struct pf1550_charger *chg = platform_get_drvdata(pdev);
+
+ cancel_delayed_work_sync(&chg->irq_work);
+ power_supply_unregister(chg->charger);
+
+ return 0;
+}
+
+static const struct platform_device_id pf1550_charger_id[] = {
+ { "pf1550-charger", 0, },
+ { }
+};
+MODULE_DEVICE_TABLE(platform, pf1550_charger_id);
+
+static struct platform_driver pf1550_charger_driver = {
+ .driver = {
+ .name = "pf1550-charger",
+ },
+ .probe = pf1550_charger_probe,
+ .remove = pf1550_charger_remove,
+ .id_table = pf1550_charger_id,
+};
+module_platform_driver(pf1550_charger_driver);
+
+MODULE_AUTHOR("Robin Gong <yibin.gong@freescale.com>");
+MODULE_DESCRIPTION("PF1550 charger driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/power/supply/sabresd_battery.c b/drivers/power/supply/sabresd_battery.c
new file mode 100644
index 000000000000..5f479f83525a
--- /dev/null
+++ b/drivers/power/supply/sabresd_battery.c
@@ -0,0 +1,1014 @@
+/*
+ * sabresd_battery.c - Maxim 8903 USB/Adapter Charger Driver
+ *
+ * Copyright (C) 2011 Samsung Electronics
+ * Copyright (C) 2011-2015 Freescale Semiconductor, Inc.
+ * Based on max8903_charger.c
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#include <linux/delay.h>
+#include <linux/gpio.h>
+#include <linux/interrupt.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/of_gpio.h>
+#include <linux/power_supply.h>
+#include <linux/platform_device.h>
+#include <linux/power/sabresd_battery.h>
+#include <linux/slab.h>
+
+#define BATTERY_UPDATE_INTERVAL 5 /*seconds*/
+#define LOW_VOLT_THRESHOLD 2800000
+#define HIGH_VOLT_THRESHOLD 4200000
+#define ADC_SAMPLE_COUNT 6
+
+struct max8903_data {
+ struct max8903_pdata *pdata;
+ struct device *dev;
+ struct power_supply *psy;
+ struct power_supply *usb;
+ struct power_supply *bat;
+ struct power_supply *detect_usb;
+ bool fault;
+ bool usb_in;
+ bool ta_in;
+ bool chg_state;
+ struct delayed_work work;
+ unsigned int interval;
+ unsigned short thermal_raw;
+ int voltage_uV;
+ int current_uA;
+ int battery_status;
+ int charger_online;
+ int charger_voltage_uV;
+ int real_capacity;
+ int percent;
+ int old_percent;
+ int usb_charger_online;
+ int first_delay_count;
+};
+
+typedef struct {
+ u32 voltage;
+ u32 percent;
+} battery_capacity , *pbattery_capacity;
+
+static int offset_discharger;
+static int offset_charger;
+static int offset_usb_charger;
+
+static battery_capacity chargingTable[] = {
+ {4050, 99},
+ {4040, 98},
+ {4020, 97},
+ {4010, 96},
+ {3990, 95},
+ {3980, 94},
+ {3970, 93},
+ {3960, 92},
+ {3950, 91},
+ {3940, 90},
+ {3930, 85},
+ {3920, 81},
+ {3910, 77},
+ {3900, 73},
+ {3890, 70},
+ {3860, 65},
+ {3830, 60},
+ {3780, 55},
+ {3760, 50},
+ {3740, 45},
+ {3720, 40},
+ {3700, 35},
+ {3680, 30},
+ {3660, 25},
+ {3640, 20},
+ {3620, 17},
+ {3600, 14},
+ {3580, 13},
+ {3560, 12},
+ {3540, 11},
+ {3520, 10},
+ {3500, 9},
+ {3480, 8},
+ {3460, 7},
+ {3440, 6},
+ {3430, 5},
+ {3420, 4},
+ {3020, 0},
+};
+
+static battery_capacity dischargingTable[] = {
+ {4050, 100},
+ {4035, 99},
+ {4020, 98},
+ {4010, 97},
+ {4000, 96},
+ {3990, 96},
+ {3980, 95},
+ {3970, 92},
+ {3960, 91},
+ {3950, 90},
+ {3940, 88},
+ {3930, 86},
+ {3920, 84},
+ {3910, 82},
+ {3900, 80},
+ {3890, 74},
+ {3860, 69},
+ {3830, 64},
+ {3780, 59},
+ {3760, 54},
+ {3740, 49},
+ {3720, 44},
+ {3700, 39},
+ {3680, 34},
+ {3660, 29},
+ {3640, 24},
+ {3620, 19},
+ {3600, 14},
+ {3580, 13},
+ {3560, 12},
+ {3540, 11},
+ {3520, 10},
+ {3500, 9},
+ {3480, 8},
+ {3460, 7},
+ {3440, 6},
+ {3430, 5},
+ {3420, 4},
+ {3020, 0},
+};
+
+u32 calibrate_battery_capability_percent(struct max8903_data *data)
+{
+ u8 i;
+ pbattery_capacity pTable;
+ u32 tableSize;
+
+ if (data->battery_status == POWER_SUPPLY_STATUS_DISCHARGING) {
+ pTable = dischargingTable;
+ tableSize = sizeof(dischargingTable)/
+ sizeof(dischargingTable[0]);
+ } else {
+ pTable = chargingTable;
+ tableSize = sizeof(chargingTable)/
+ sizeof(chargingTable[0]);
+ }
+ for (i = 0; i < tableSize; i++) {
+ if (data->voltage_uV >= pTable[i].voltage)
+ return pTable[i].percent;
+ }
+
+ return 0;
+}
+
+static enum power_supply_property max8903_charger_props[] = {
+ POWER_SUPPLY_PROP_ONLINE,
+};
+
+static enum power_supply_property max8903_battery_props[] = {
+ POWER_SUPPLY_PROP_VOLTAGE_NOW,
+ POWER_SUPPLY_PROP_STATUS,
+ POWER_SUPPLY_PROP_PRESENT,
+ POWER_SUPPLY_PROP_CAPACITY,
+ POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN,
+ POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN,
+ POWER_SUPPLY_PROP_HEALTH,
+ POWER_SUPPLY_PROP_CAPACITY_LEVEL,
+};
+
+extern int max11801_read_adc(void);
+
+static void max8903_charger_update_status(struct max8903_data *data)
+{
+ if (data->ta_in) {
+ data->charger_online = 1;
+ } else if (data->usb_in) {
+ data->usb_charger_online = 1;
+ } else {
+ data->charger_online = 0;
+ data->usb_charger_online = 0;
+ }
+
+ if (!data->charger_online && !data->usb_charger_online) {
+ data->battery_status = POWER_SUPPLY_STATUS_DISCHARGING;
+ } else if (gpio_get_value(data->pdata->chg) == 0) {
+ data->battery_status = POWER_SUPPLY_STATUS_CHARGING;
+ } else if ((data->ta_in || data->usb_in) &&
+ gpio_get_value(data->pdata->chg) > 0) {
+ if (!data->pdata->feature_flag) {
+ if (data->percent >= 99)
+ data->battery_status = POWER_SUPPLY_STATUS_FULL;
+ else
+ data->battery_status =
+ POWER_SUPPLY_STATUS_NOT_CHARGING;
+ } else {
+ data->battery_status = POWER_SUPPLY_STATUS_FULL;
+ }
+ }
+}
+
+u32 calibration_voltage(struct max8903_data *data)
+{
+ u32 voltage_data = 0;
+ int adc_val = 0;
+ int i;
+ int offset;
+
+ if (!data->charger_online && !data->usb_charger_online)
+ offset = offset_discharger;
+ else if (data->usb_charger_online)
+ offset = offset_usb_charger;
+ else if (data->charger_online)
+ offset = offset_charger;
+
+ /* simple average */
+ for (i = 0; i < ADC_SAMPLE_COUNT; i++) {
+ adc_val = max11801_read_adc();
+ /* Check if touch driver is probed */
+ if (max11801_read_adc() < 0)
+ break;
+ voltage_data += adc_val - offset;
+ }
+ voltage_data = voltage_data / ADC_SAMPLE_COUNT;
+ dev_dbg(data->dev, "volt: %d\n", voltage_data);
+
+ return voltage_data;
+}
+
+static void max8903_battery_update_status(struct max8903_data *data)
+{
+ if (!data->pdata->feature_flag) {
+ data->voltage_uV = calibration_voltage(data);
+ data->percent = calibrate_battery_capability_percent(data);
+ if (data->percent != data->old_percent) {
+ data->old_percent = data->percent;
+ power_supply_changed(data->bat);
+ }
+ /*
+ * because boot time gap between led framwork and charger
+ * framwork,when system boots with charger attatched,
+ * charger led framwork loses the first charger online event,
+ * add once extra power_supply_changed can fix this issure
+ */
+ if (data->first_delay_count < 200) {
+ data->first_delay_count = data->first_delay_count + 1;
+ power_supply_changed(data->bat);
+ }
+ }
+}
+
+static int max8903_battery_get_property(struct power_supply *bat,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ struct max8903_data *di = power_supply_get_drvdata(bat);
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_STATUS:
+ val->intval = POWER_SUPPLY_STATUS_UNKNOWN;
+ if (gpio_get_value(di->pdata->chg) == 0) {
+ di->battery_status = POWER_SUPPLY_STATUS_CHARGING;
+ } else if ((di->ta_in || di->usb_in) &&
+ gpio_get_value(di->pdata->chg) > 0) {
+ if (!di->pdata->feature_flag) {
+ if (di->percent >= 99)
+ di->battery_status =
+ POWER_SUPPLY_STATUS_FULL;
+ else
+ di->battery_status =
+ POWER_SUPPLY_STATUS_NOT_CHARGING;
+ } else {
+ di->battery_status = POWER_SUPPLY_STATUS_FULL;
+ }
+ }
+ val->intval = di->battery_status;
+ return 0;
+ default:
+ break;
+ }
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_VOLTAGE_NOW:
+ val->intval = di->voltage_uV;
+ break;
+ case POWER_SUPPLY_PROP_CHARGE_NOW:
+ val->intval = 0;
+ break;
+ case POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN:
+ val->intval = HIGH_VOLT_THRESHOLD;
+ break;
+ case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN:
+ val->intval = LOW_VOLT_THRESHOLD;
+ break;
+ case POWER_SUPPLY_PROP_PRESENT:
+ val->intval = 1;
+ break;
+ case POWER_SUPPLY_PROP_CAPACITY:
+ val->intval = di->percent < 0 ? 0 :
+ (di->percent > 100 ? 100 : di->percent);
+ break;
+ case POWER_SUPPLY_PROP_HEALTH:
+ val->intval = POWER_SUPPLY_HEALTH_GOOD;
+ if (di->fault)
+ val->intval = POWER_SUPPLY_HEALTH_UNSPEC_FAILURE;
+ break;
+ case POWER_SUPPLY_PROP_CAPACITY_LEVEL:
+ if (di->battery_status == POWER_SUPPLY_STATUS_FULL)
+ val->intval = POWER_SUPPLY_CAPACITY_LEVEL_FULL;
+ else if (di->percent <= 15)
+ val->intval = POWER_SUPPLY_CAPACITY_LEVEL_LOW;
+ else
+ val->intval = POWER_SUPPLY_CAPACITY_LEVEL_NORMAL;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int max8903_get_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ struct max8903_data *data = power_supply_get_drvdata(psy);
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_ONLINE:
+ val->intval = 0;
+ if (data->ta_in)
+ val->intval = 1;
+ data->charger_online = val->intval;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int max8903_get_usb_property(struct power_supply *usb,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ struct max8903_data *data = power_supply_get_drvdata(usb);
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_ONLINE:
+ val->intval = 0;
+ if (data->usb_in)
+ val->intval = 1;
+ data->usb_charger_online = val->intval;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static irqreturn_t max8903_dcin(int irq, void *_data)
+{
+ struct max8903_data *data = _data;
+ struct max8903_pdata *pdata = data->pdata;
+ bool ta_in = false;
+
+ if (pdata->dok)
+ ta_in = gpio_get_value(pdata->dok) ? false : true;
+
+ if (ta_in == data->ta_in)
+ return IRQ_HANDLED;
+
+ data->ta_in = ta_in;
+ dev_info(data->dev, "TA(DC-IN) Charger %s.\n", ta_in ?
+ "Connected" : "Disconnected");
+ max8903_charger_update_status(data);
+ power_supply_changed(data->psy);
+ power_supply_changed(data->bat);
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t max8903_usbin(int irq, void *_data)
+{
+ struct max8903_data *data = _data;
+ struct max8903_pdata *pdata = data->pdata;
+ bool usb_in = false;
+
+ if (pdata->uok)
+ usb_in = gpio_get_value(pdata->uok) ? false : true;
+ if (usb_in == data->usb_in)
+ return IRQ_HANDLED;
+ data->usb_in = usb_in;
+ dev_info(data->dev, "USB Charger %s.\n", usb_in ?
+ "Connected" : "Disconnected");
+ max8903_charger_update_status(data);
+ power_supply_changed(data->bat);
+ power_supply_changed(data->usb);
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t max8903_fault(int irq, void *_data)
+{
+ struct max8903_data *data = _data;
+ struct max8903_pdata *pdata = data->pdata;
+ bool fault;
+
+ fault = gpio_get_value(pdata->flt) ? false : true;
+
+ if (fault == data->fault)
+ return IRQ_HANDLED;
+ data->fault = fault;
+
+ if (fault)
+ dev_err(data->dev, "Charger suffers a fault and stops.\n");
+ else
+ dev_err(data->dev, "Charger recovered from a fault.\n");
+ max8903_charger_update_status(data);
+ power_supply_changed(data->psy);
+ power_supply_changed(data->bat);
+ power_supply_changed(data->usb);
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t max8903_chg(int irq, void *_data)
+{
+ struct max8903_data *data = _data;
+ struct max8903_pdata *pdata = data->pdata;
+ int chg_state;
+
+ chg_state = gpio_get_value(pdata->chg) ? false : true;
+
+ if (chg_state == data->chg_state)
+ return IRQ_HANDLED;
+ data->chg_state = chg_state;
+ max8903_charger_update_status(data);
+ power_supply_changed(data->psy);
+ power_supply_changed(data->bat);
+ power_supply_changed(data->usb);
+
+ return IRQ_HANDLED;
+}
+
+static void max8903_battery_work(struct work_struct *work)
+{
+ struct max8903_data *data;
+
+ data = container_of(work, struct max8903_data, work.work);
+ data->interval = HZ * BATTERY_UPDATE_INTERVAL;
+
+ max8903_charger_update_status(data);
+ max8903_battery_update_status(data);
+ dev_dbg(data->dev, "battery voltage: %4d mV\n", data->voltage_uV);
+ dev_dbg(data->dev, "charger online status: %d\n",
+ data->charger_online);
+ dev_dbg(data->dev, "battery status : %d\n" , data->battery_status);
+ dev_dbg(data->dev, "battery capacity percent: %3d\n", data->percent);
+ dev_dbg(data->dev, "data->usb_in: %x , data->ta_in: %x\n",
+ data->usb_in, data->ta_in);
+ /* reschedule for the next time */
+ schedule_delayed_work(&data->work, data->interval);
+}
+
+static ssize_t max8903_voltage_offset_discharger_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ return sprintf(buf, "read offset_discharger:%04d\n",
+ offset_discharger);
+}
+
+static ssize_t max8903_voltage_offset_discharger_store(struct device *dev,
+ struct device_attribute *attr, const char *buf,
+ size_t count)
+{
+ int ret;
+ unsigned long data;
+
+ ret = kstrtoul(buf, 10, &data);
+ offset_discharger = (int)data;
+ pr_info("read offset_discharger:%04d\n", offset_discharger);
+
+ return count;
+}
+
+static ssize_t max8903_voltage_offset_charger_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ return sprintf(buf, "read offset_charger:%04d\n",
+ offset_charger);
+}
+
+static ssize_t max8903_voltage_offset_charger_store(struct device *dev,
+ struct device_attribute *attr, const char *buf,
+ size_t count)
+{
+ int ret;
+ unsigned long data;
+
+ ret = kstrtoul(buf, 10, &data);
+ offset_charger = (int)data;
+ pr_info("read offset_charger:%04d\n", offset_charger);
+ return count;
+}
+
+static ssize_t max8903_voltage_offset_usb_charger_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ return sprintf(buf, "read offset_usb_charger:%04d\n",
+ offset_usb_charger);
+}
+
+static ssize_t max8903_voltage_offset_usb_charger_store(struct device *dev,
+ struct device_attribute *attr, const char *buf,
+ size_t count)
+{
+ int ret;
+ unsigned long data;
+
+ ret = kstrtoul(buf, 10, &data);
+ offset_usb_charger = (int)data;
+ pr_info("read offset_charger:%04d\n", offset_usb_charger);
+
+ return count;
+}
+
+static struct device_attribute max8903_discharger_dev_attr = {
+ .attr = {
+ .name = "max8903_ctl_offset_discharger",
+ .mode = S_IRUSR | S_IWUSR,
+ },
+ .show = max8903_voltage_offset_discharger_show,
+ .store = max8903_voltage_offset_discharger_store,
+};
+
+static struct device_attribute max8903_charger_dev_attr = {
+ .attr = {
+ .name = "max8903_ctl_offset_charger",
+ .mode = S_IRUSR | S_IWUSR,
+ },
+ .show = max8903_voltage_offset_charger_show,
+ .store = max8903_voltage_offset_charger_store,
+};
+
+static struct device_attribute max8903_usb_charger_dev_attr = {
+ .attr = {
+ .name = "max8903_ctl_offset_usb_charger",
+ .mode = S_IRUSR | S_IWUSR,
+ },
+ .show = max8903_voltage_offset_usb_charger_show,
+ .store = max8903_voltage_offset_usb_charger_store,
+};
+
+#if defined(CONFIG_OF)
+static const struct of_device_id max8903_dt_ids[] = {
+ { .compatible = "fsl,max8903-charger", },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, max8903_dt_ids);
+
+static struct max8903_pdata *max8903_of_populate_pdata(
+ struct device *dev)
+{
+ struct device_node *of_node = dev->of_node;
+ struct max8903_pdata *pdata = dev->platform_data;
+
+ if (!of_node || pdata)
+ return pdata;
+
+ pdata = devm_kzalloc(dev, sizeof(struct max8903_pdata),
+ GFP_KERNEL);
+ if (!pdata)
+ return pdata;
+
+ if (of_get_property(of_node, "fsl,dcm_always_high", NULL))
+ pdata->dcm_always_high = true;
+ if (of_get_property(of_node, "fsl,dc_valid", NULL))
+ pdata->dc_valid = true;
+ if (of_get_property(of_node, "fsl,usb_valid", NULL))
+ pdata->usb_valid = true;
+ if (of_get_property(of_node, "fsl,adc_disable", NULL))
+ pdata->feature_flag = true;
+
+ if (pdata->dc_valid) {
+ pdata->dok = of_get_named_gpio(of_node, "dok_input", 0);
+ if (!gpio_is_valid(pdata->dok)) {
+ dev_err(dev, "pin pdata->dok: invalid gpio %d\n", pdata->dok);
+ return NULL;
+ }
+ }
+ if (pdata->usb_valid) {
+ pdata->uok = of_get_named_gpio(of_node, "uok_input", 0);
+ if (!gpio_is_valid(pdata->uok)) {
+ dev_err(dev, "pin pdata->uok: invalid gpio %d\n", pdata->uok);
+ return NULL;
+ }
+ }
+ pdata->chg = of_get_named_gpio(of_node, "chg_input", 0);
+ if (!gpio_is_valid(pdata->chg)) {
+ dev_err(dev, "pin pdata->chg: invalid gpio %d\n", pdata->chg);
+ return NULL;
+ }
+ pdata->flt = of_get_named_gpio(of_node, "flt_input", 0);
+ if (!gpio_is_valid(pdata->flt)) {
+ dev_err(dev, "pin pdata->flt: invalid gpio %d\n", pdata->flt);
+ return NULL;
+ }
+
+ /* no need check offset without adc converter */
+ if (!pdata->feature_flag) {
+ if (of_property_read_u32(of_node, "offset-charger",
+ &offset_charger))
+ dev_err(dev, "Not setting offset-charger in dts!\n");
+
+ if (of_property_read_u32(of_node, "offset-discharger",
+ &offset_discharger))
+ dev_err(dev, "Not setting offset-discharger in dts!\n");
+
+ if (of_property_read_u32(of_node, "offset-usb-charger",
+ &offset_usb_charger))
+ dev_err(dev, "Not setting offset-usb-charger in dts!\n");
+ }
+
+ return pdata;
+}
+#endif
+
+static const struct power_supply_desc max8903_ac_desc = {
+ .name = "max8903-ac",
+ .type = POWER_SUPPLY_TYPE_MAINS,
+ .get_property = max8903_get_property,
+ .properties = max8903_charger_props,
+ .num_properties = ARRAY_SIZE(max8903_charger_props),
+};
+
+static const struct power_supply_desc max8903_usb_desc = {
+ .name = "max8903-usb",
+ .type = POWER_SUPPLY_TYPE_USB,
+ .get_property = max8903_get_usb_property,
+ .properties = max8903_charger_props,
+ .num_properties = ARRAY_SIZE(max8903_charger_props),
+};
+
+static const struct power_supply_desc max8903_bat_desc = {
+ .name = "max8903-charger",
+ .type = POWER_SUPPLY_TYPE_BATTERY,
+ .properties = max8903_battery_props,
+ .num_properties = ARRAY_SIZE(max8903_battery_props),
+ .get_property = max8903_battery_get_property,
+ .use_for_apm = 1,
+};
+
+static int max8903_probe(struct platform_device *pdev)
+{
+ struct max8903_data *data;
+ struct device *dev = &pdev->dev;
+ struct max8903_pdata *pdata = pdev->dev.platform_data;
+ int ret = 0;
+ int gpio = 0;
+ int ta_in = 0;
+ int usb_in = 0;
+ struct power_supply_config psy_cfg = {};
+
+ data = devm_kzalloc(dev, sizeof(struct max8903_data), GFP_KERNEL);
+ if (!data)
+ return -ENOMEM;
+
+ pdata = pdev->dev.platform_data;
+ if (!pdata) {
+ pdata = max8903_of_populate_pdata(&pdev->dev);
+ if (!pdata)
+ return -EINVAL;
+ }
+
+ data->first_delay_count = 0;
+ data->pdata = pdata;
+ data->dev = dev;
+ data->usb_in = 0;
+ data->ta_in = 0;
+ platform_set_drvdata(pdev, data);
+
+ if (pdata->dc_valid == false && pdata->usb_valid == false) {
+ dev_err(dev, "No valid power sources.\n");
+ ret = -EINVAL;
+ goto err;
+ }
+ if (pdata->dc_valid) {
+ if (pdata->dok && pdata->dcm_always_high) {
+ gpio = pdata->dok;
+ ret = gpio_request_one(gpio, GPIOF_IN, "max8903-DOK");
+ if (ret) {
+ dev_err(dev, "request max8903-DOK error!!\n");
+ goto err;
+ }
+ ta_in = gpio_get_value(gpio) ? 0 : 1;
+ } else {
+ dev_err(dev, "When DC is wired, DOK and DCM should be"
+ " wired as well or set dcm always high!\n");
+ ret = -EINVAL;
+ goto err;
+ }
+ }
+
+ if (pdata->usb_valid) {
+ if (pdata->uok) {
+ gpio = pdata->uok;
+ ret = gpio_request_one(gpio, GPIOF_IN, "max8903-UOK");
+ if (ret) {
+ dev_err(dev, "request max8903-UOK error!!\n");
+ goto err;
+ }
+ usb_in = gpio_get_value(gpio) ? 0 : 1;
+ } else {
+ dev_err(dev, "When USB is wired, UOK should be wired"
+ " as well.\n");
+ ret = -EINVAL;
+ goto err;
+ }
+ }
+
+ if (pdata->chg) {
+ ret = gpio_request_one(pdata->chg, GPIOF_IN, "max8903-CHG");
+ if (ret) {
+ dev_err(dev, "request max8903-CHG error!!\n");
+ goto err;
+ }
+ }
+
+ if (pdata->flt) {
+ ret = gpio_request_one(pdata->flt, GPIOF_IN, "max8903-FLT");
+ if (ret) {
+ dev_err(dev, "request max8903-FLT error!!\n");
+ goto err;
+ }
+ }
+
+ data->fault = false;
+ data->ta_in = ta_in;
+ data->usb_in = usb_in;
+
+ psy_cfg.of_node = dev->of_node;
+ psy_cfg.drv_data = data;
+
+ data->psy = power_supply_register(dev, &max8903_ac_desc, &psy_cfg);
+ if (IS_ERR(data->psy)) {
+ dev_err(dev, "failed: power supply register.\n");
+ goto err;
+ }
+
+ data->usb = power_supply_register(dev, &max8903_usb_desc, &psy_cfg);
+ if (IS_ERR(data->usb)) {
+ dev_err(dev, "failed: power supply register.\n");
+ goto err_psy;
+ }
+
+ data->bat = power_supply_register(dev, &max8903_bat_desc, &psy_cfg);
+ if (IS_ERR(data->bat)) {
+ dev_err(data->dev, "failed to register battery\n");
+ goto err_usb;
+ }
+
+ INIT_DELAYED_WORK(&data->work, max8903_battery_work);
+ schedule_delayed_work(&data->work, data->interval);
+
+ if (pdata->dc_valid) {
+ ret = request_threaded_irq(gpio_to_irq(pdata->dok), NULL,
+ max8903_dcin, IRQF_TRIGGER_FALLING |
+ IRQF_TRIGGER_RISING | IRQF_ONESHOT, "MAX8903 DC IN",
+ data);
+ if (ret) {
+ dev_err(dev, "Cannot request irq %d for DC (%d)\n",
+ gpio_to_irq(pdata->dok), ret);
+ goto err_dc_irq;
+ }
+ }
+
+ if (pdata->usb_valid) {
+ ret = request_threaded_irq(gpio_to_irq(pdata->uok), NULL,
+ max8903_usbin, IRQF_TRIGGER_FALLING |
+ IRQF_TRIGGER_RISING | IRQF_ONESHOT, "MAX8903 USB IN",
+ data);
+ if (ret) {
+ dev_err(dev, "Cannot request irq %d for USB (%d)\n",
+ gpio_to_irq(pdata->uok), ret);
+ goto err_usb_irq;
+ }
+ }
+
+ if (pdata->flt) {
+ ret = request_threaded_irq(gpio_to_irq(pdata->flt), NULL,
+ max8903_fault, IRQF_TRIGGER_FALLING |
+ IRQF_TRIGGER_RISING | IRQF_ONESHOT, "MAX8903 Fault",
+ data);
+ if (ret) {
+ dev_err(dev, "Cannot request irq %d for Fault (%d)\n",
+ gpio_to_irq(pdata->flt), ret);
+ goto err_flt_irq;
+ }
+ }
+
+ if (pdata->chg) {
+ ret = request_threaded_irq(gpio_to_irq(pdata->chg), NULL,
+ max8903_chg, IRQF_TRIGGER_FALLING |
+ IRQF_TRIGGER_RISING | IRQF_ONESHOT, "MAX8903 Status",
+ data);
+ if (ret) {
+ dev_err(dev, "Cannot request irq %d for Status (%d)\n",
+ gpio_to_irq(pdata->flt), ret);
+ goto err_chg_irq;
+ }
+ }
+
+ ret = device_create_file(&pdev->dev, &max8903_discharger_dev_attr);
+ if (ret)
+ dev_err(&pdev->dev, "create device file failed!\n");
+ ret = device_create_file(&pdev->dev, &max8903_charger_dev_attr);
+ if (ret)
+ dev_err(&pdev->dev, "create device file failed!\n");
+ ret = device_create_file(&pdev->dev, &max8903_usb_charger_dev_attr);
+ if (ret)
+ dev_err(&pdev->dev, "create device file failed!\n");
+
+ device_set_wakeup_capable(&pdev->dev, true);
+
+ max8903_charger_update_status(data);
+ max8903_battery_update_status(data);
+
+ return 0;
+err_chg_irq:
+ if (pdata->chg)
+ free_irq(gpio_to_irq(pdata->chg), data);
+err_flt_irq:
+ if (pdata->flt)
+ free_irq(gpio_to_irq(pdata->flt), data);
+err_usb_irq:
+ if (pdata->usb_valid)
+ free_irq(gpio_to_irq(pdata->uok), data);
+err_dc_irq:
+ if (pdata->dc_valid)
+ free_irq(gpio_to_irq(pdata->dok), data);
+ cancel_delayed_work(&data->work);
+ power_supply_unregister(data->bat);
+err_usb:
+ power_supply_unregister(data->usb);
+err_psy:
+ power_supply_unregister(data->psy);
+err:
+ if (pdata->uok)
+ gpio_free(pdata->uok);
+ if (pdata->dok)
+ gpio_free(pdata->dok);
+ if (pdata->flt)
+ gpio_free(pdata->flt);
+ if (pdata->chg)
+ gpio_free(pdata->chg);
+ return ret;
+}
+
+static int max8903_remove(struct platform_device *pdev)
+{
+ struct max8903_data *data = platform_get_drvdata(pdev);
+ if (data) {
+ struct max8903_pdata *pdata = data->pdata;
+
+ cancel_delayed_work_sync(&data->work);
+ power_supply_unregister(data->psy);
+ power_supply_unregister(data->usb);
+ power_supply_unregister(data->bat);
+
+ if (pdata->flt) {
+ free_irq(gpio_to_irq(pdata->flt), data);
+ gpio_free(pdata->flt);
+ }
+ if (pdata->usb_valid && pdata->uok) {
+ free_irq(gpio_to_irq(pdata->uok), data);
+ gpio_free(pdata->uok);
+ }
+ if (pdata->dc_valid) {
+ if (pdata->dok) {
+ free_irq(gpio_to_irq(pdata->dok), data);
+ gpio_free(pdata->dok);
+ } else if (pdata->chg) {
+ free_irq(gpio_to_irq(pdata->chg), data);
+ gpio_free(pdata->chg);
+ }
+ }
+
+ device_remove_file(&pdev->dev, &max8903_discharger_dev_attr);
+ device_remove_file(&pdev->dev, &max8903_charger_dev_attr);
+ device_remove_file(&pdev->dev, &max8903_usb_charger_dev_attr);
+
+ platform_set_drvdata(pdev, NULL);
+ kfree(data);
+ }
+
+ return 0;
+}
+
+static int max8903_suspend(struct platform_device *pdev,
+ pm_message_t state)
+{
+ struct max8903_data *data = platform_get_drvdata(pdev);
+ int irq;
+ if (data) {
+ struct max8903_pdata *pdata = data->pdata;
+ if (pdata) {
+ if (pdata->dc_valid && device_may_wakeup(&pdev->dev)) {
+ irq = gpio_to_irq(pdata->dok);
+ enable_irq_wake(irq);
+ }
+
+ if (pdata->usb_valid && device_may_wakeup(&pdev->dev)) {
+ irq = gpio_to_irq(pdata->uok);
+ enable_irq_wake(irq);
+ }
+ cancel_delayed_work(&data->work);
+ }
+ }
+ return 0;
+}
+
+static int max8903_resume(struct platform_device *pdev)
+{
+ struct max8903_data *data = platform_get_drvdata(pdev);
+ bool ta_in = false;
+ bool usb_in = false;
+ int irq;
+
+ if (data) {
+ struct max8903_pdata *pdata = data->pdata;
+
+ if (pdata) {
+ if (pdata->dok)
+ ta_in = gpio_get_value(pdata->dok) ? false : true;
+ if (pdata->uok)
+ usb_in = gpio_get_value(pdata->uok) ? false : true;
+
+ if (ta_in != data->ta_in) {
+ data->ta_in = ta_in;
+ dev_info(data->dev, "TA(DC-IN) Charger %s.\n", ta_in ?
+ "Connected" : "Disconnected");
+ max8903_charger_update_status(data);
+ power_supply_changed(data->psy);
+ }
+
+ if (usb_in != data->usb_in) {
+ data->usb_in = usb_in;
+ dev_info(data->dev, "USB Charger %s.\n", usb_in ?
+ "Connected" : "Disconnected");
+ max8903_charger_update_status(data);
+ power_supply_changed(data->usb);
+ }
+
+ if (pdata->dc_valid && device_may_wakeup(&pdev->dev)) {
+ irq = gpio_to_irq(pdata->dok);
+ disable_irq_wake(irq);
+ }
+ if (pdata->usb_valid && device_may_wakeup(&pdev->dev)) {
+ irq = gpio_to_irq(pdata->uok);
+ disable_irq_wake(irq);
+ }
+
+ schedule_delayed_work(&data->work,
+ BATTERY_UPDATE_INTERVAL);
+ }
+ }
+
+ return 0;
+}
+
+static struct platform_driver max8903_driver = {
+ .probe = max8903_probe,
+ .remove = max8903_remove,
+ .suspend = max8903_suspend,
+ .resume = max8903_resume,
+ .driver = {
+ .name = "max8903-charger",
+ .owner = THIS_MODULE,
+ .of_match_table = max8903_dt_ids,
+ },
+};
+module_platform_driver(max8903_driver);
+
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR("Freescale Semiconductor, Inc.");
+MODULE_DESCRIPTION("Sabresd Battery Driver");
+MODULE_ALIAS("sabresd_battery");
generated by cgit v1.2.3 (git 2.0.4) at 2024-06-15 19:55:06 +0000