},
};
+static struct platform_device rx51_charger_device = {
+ .name = "isp1704_charger",
+};
+
#if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
#define RX51_GPIO_CAMERA_LENS_COVER 110
spi_register_board_info(rx51_peripherals_spi_board_info,
ARRAY_SIZE(rx51_peripherals_spi_board_info));
omap2_hsmmc_init(mmc);
+ platform_device_register(&rx51_charger_device);
}
config BATTERY_DS2760
tristate "DS2760 battery driver (HP iPAQ & others)"
- select W1
- select W1_SLAVE_DS2760
+ depends on W1 && W1_SLAVE_DS2760
help
Say Y here to enable support for batteries with ds2760 chip.
help
Say Y to enable support for battery measured by WM97xx aux port.
+config BATTERY_BQ20Z75
+ tristate "TI BQ20z75 gas gauge"
+ depends on I2C
+ help
+ Say Y to include support for TI BQ20z75 SBS-compliant
+ gas gauge and protection IC.
+
config BATTERY_BQ27x00
tristate "BQ27x00 battery driver"
depends on I2C
Say Y here to enable the battery driver on Intel MID
platforms.
+config CHARGER_ISP1704
+ tristate "ISP1704 USB Charger Detection"
+ depends on USB_OTG_UTILS
+ help
+ Say Y to enable support for USB Charger Detection with
+ ISP1707/ISP1704 USB transceivers.
+
+config CHARGER_TWL4030
+ tristate "OMAP TWL4030 BCI charger driver"
+ depends on TWL4030_CORE
+ help
+ Say Y here to enable support for TWL4030 Battery Charge Interface.
+
endif # POWER_SUPPLY
-power_supply-objs := power_supply_core.o
+ccflags-$(CONFIG_POWER_SUPPLY_DEBUG) := -DDEBUG
-ifeq ($(CONFIG_SYSFS),y)
-power_supply-objs += power_supply_sysfs.o
-endif
-
-ifeq ($(CONFIG_LEDS_TRIGGERS),y)
-power_supply-objs += power_supply_leds.o
-endif
-
-ifeq ($(CONFIG_POWER_SUPPLY_DEBUG),y)
-EXTRA_CFLAGS += -DDEBUG
-endif
+power_supply-y := power_supply_core.o
+power_supply-$(CONFIG_SYSFS) += power_supply_sysfs.o
+power_supply-$(CONFIG_LEDS_TRIGGERS) += power_supply_leds.o
obj-$(CONFIG_POWER_SUPPLY) += power_supply.o
obj-$(CONFIG_BATTERY_TOSA) += tosa_battery.o
obj-$(CONFIG_BATTERY_COLLIE) += collie_battery.o
obj-$(CONFIG_BATTERY_WM97XX) += wm97xx_battery.o
+obj-$(CONFIG_BATTERY_BQ20Z75) += bq20z75.o
obj-$(CONFIG_BATTERY_BQ27x00) += bq27x00_battery.o
obj-$(CONFIG_BATTERY_DA9030) += da9030_battery.o
obj-$(CONFIG_BATTERY_MAX17040) += max17040_battery.o
obj-$(CONFIG_CHARGER_PCF50633) += pcf50633-charger.o
obj-$(CONFIG_BATTERY_JZ4740) += jz4740-battery.o
obj-$(CONFIG_BATTERY_INTEL_MID) += intel_mid_battery.o
+obj-$(CONFIG_CHARGER_ISP1704) += isp1704_charger.o
+obj-$(CONFIG_CHARGER_TWL4030) += twl4030_charger.o
--- /dev/null
+/*
+ * Gas Gauge driver for TI's BQ20Z75
+ *
+ * Copyright (c) 2010, NVIDIA Corporation.
+ *
+ * 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.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/err.h>
+#include <linux/power_supply.h>
+#include <linux/i2c.h>
+#include <linux/slab.h>
+
+enum {
+ REG_MANUFACTURER_DATA,
+ REG_TEMPERATURE,
+ REG_VOLTAGE,
+ REG_CURRENT,
+ REG_CAPACITY,
+ REG_TIME_TO_EMPTY,
+ REG_TIME_TO_FULL,
+ REG_STATUS,
+ REG_CYCLE_COUNT,
+ REG_SERIAL_NUMBER,
+ REG_REMAINING_CAPACITY,
+ REG_FULL_CHARGE_CAPACITY,
+ REG_DESIGN_CAPACITY,
+ REG_DESIGN_VOLTAGE,
+};
+
+/* manufacturer access defines */
+#define MANUFACTURER_ACCESS_STATUS 0x0006
+#define MANUFACTURER_ACCESS_SLEEP 0x0011
+
+/* battery status value bits */
+#define BATTERY_DISCHARGING 0x40
+#define BATTERY_FULL_CHARGED 0x20
+#define BATTERY_FULL_DISCHARGED 0x10
+
+#define BQ20Z75_DATA(_psp, _addr, _min_value, _max_value) { \
+ .psp = _psp, \
+ .addr = _addr, \
+ .min_value = _min_value, \
+ .max_value = _max_value, \
+}
+
+static const struct bq20z75_device_data {
+ enum power_supply_property psp;
+ u8 addr;
+ int min_value;
+ int max_value;
+} bq20z75_data[] = {
+ [REG_MANUFACTURER_DATA] =
+ BQ20Z75_DATA(POWER_SUPPLY_PROP_PRESENT, 0x00, 0, 65535),
+ [REG_TEMPERATURE] =
+ BQ20Z75_DATA(POWER_SUPPLY_PROP_TEMP, 0x08, 0, 65535),
+ [REG_VOLTAGE] =
+ BQ20Z75_DATA(POWER_SUPPLY_PROP_VOLTAGE_NOW, 0x09, 0, 20000),
+ [REG_CURRENT] =
+ BQ20Z75_DATA(POWER_SUPPLY_PROP_CURRENT_NOW, 0x0A, -32768,
+ 32767),
+ [REG_CAPACITY] =
+ BQ20Z75_DATA(POWER_SUPPLY_PROP_CAPACITY, 0x0E, 0, 100),
+ [REG_REMAINING_CAPACITY] =
+ BQ20Z75_DATA(POWER_SUPPLY_PROP_ENERGY_NOW, 0x0F, 0, 65535),
+ [REG_FULL_CHARGE_CAPACITY] =
+ BQ20Z75_DATA(POWER_SUPPLY_PROP_ENERGY_FULL, 0x10, 0, 65535),
+ [REG_TIME_TO_EMPTY] =
+ BQ20Z75_DATA(POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG, 0x12, 0,
+ 65535),
+ [REG_TIME_TO_FULL] =
+ BQ20Z75_DATA(POWER_SUPPLY_PROP_TIME_TO_FULL_AVG, 0x13, 0,
+ 65535),
+ [REG_STATUS] =
+ BQ20Z75_DATA(POWER_SUPPLY_PROP_STATUS, 0x16, 0, 65535),
+ [REG_CYCLE_COUNT] =
+ BQ20Z75_DATA(POWER_SUPPLY_PROP_CYCLE_COUNT, 0x17, 0, 65535),
+ [REG_DESIGN_CAPACITY] =
+ BQ20Z75_DATA(POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN, 0x18, 0,
+ 65535),
+ [REG_DESIGN_VOLTAGE] =
+ BQ20Z75_DATA(POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN, 0x19, 0,
+ 65535),
+ [REG_SERIAL_NUMBER] =
+ BQ20Z75_DATA(POWER_SUPPLY_PROP_SERIAL_NUMBER, 0x1C, 0, 65535),
+};
+
+static enum power_supply_property bq20z75_properties[] = {
+ POWER_SUPPLY_PROP_STATUS,
+ POWER_SUPPLY_PROP_HEALTH,
+ POWER_SUPPLY_PROP_PRESENT,
+ POWER_SUPPLY_PROP_TECHNOLOGY,
+ POWER_SUPPLY_PROP_CYCLE_COUNT,
+ POWER_SUPPLY_PROP_VOLTAGE_NOW,
+ POWER_SUPPLY_PROP_CURRENT_NOW,
+ POWER_SUPPLY_PROP_CAPACITY,
+ POWER_SUPPLY_PROP_TEMP,
+ POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG,
+ POWER_SUPPLY_PROP_TIME_TO_FULL_AVG,
+ POWER_SUPPLY_PROP_SERIAL_NUMBER,
+ POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN,
+ POWER_SUPPLY_PROP_ENERGY_NOW,
+ POWER_SUPPLY_PROP_ENERGY_FULL,
+ POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN,
+};
+
+struct bq20z75_info {
+ struct i2c_client *client;
+ struct power_supply power_supply;
+};
+
+static int bq20z75_read_word_data(struct i2c_client *client, u8 address)
+{
+ s32 ret;
+
+ ret = i2c_smbus_read_word_data(client, address);
+ if (ret < 0) {
+ dev_err(&client->dev,
+ "%s: i2c read at address 0x%x failed\n",
+ __func__, address);
+ return ret;
+ }
+ return le16_to_cpu(ret);
+}
+
+static int bq20z75_write_word_data(struct i2c_client *client, u8 address,
+ u16 value)
+{
+ s32 ret;
+
+ ret = i2c_smbus_write_word_data(client, address, le16_to_cpu(value));
+ if (ret < 0) {
+ dev_err(&client->dev,
+ "%s: i2c write to address 0x%x failed\n",
+ __func__, address);
+ return ret;
+ }
+ return 0;
+}
+
+static int bq20z75_get_battery_presence_and_health(
+ struct i2c_client *client, enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ s32 ret;
+
+ /* Write to ManufacturerAccess with
+ * ManufacturerAccess command and then
+ * read the status */
+ ret = bq20z75_write_word_data(client,
+ bq20z75_data[REG_MANUFACTURER_DATA].addr,
+ MANUFACTURER_ACCESS_STATUS);
+ if (ret < 0)
+ return ret;
+
+
+ ret = bq20z75_read_word_data(client,
+ bq20z75_data[REG_MANUFACTURER_DATA].addr);
+ if (ret < 0)
+ return ret;
+
+ if (ret < bq20z75_data[REG_MANUFACTURER_DATA].min_value ||
+ ret > bq20z75_data[REG_MANUFACTURER_DATA].max_value) {
+ val->intval = 0;
+ return 0;
+ }
+
+ /* Mask the upper nibble of 2nd byte and
+ * lower byte of response then
+ * shift the result by 8 to get status*/
+ ret &= 0x0F00;
+ ret >>= 8;
+ if (psp == POWER_SUPPLY_PROP_PRESENT) {
+ if (ret == 0x0F)
+ /* battery removed */
+ val->intval = 0;
+ else
+ val->intval = 1;
+ } else if (psp == POWER_SUPPLY_PROP_HEALTH) {
+ if (ret == 0x09)
+ val->intval = POWER_SUPPLY_HEALTH_UNSPEC_FAILURE;
+ else if (ret == 0x0B)
+ val->intval = POWER_SUPPLY_HEALTH_OVERHEAT;
+ else if (ret == 0x0C)
+ val->intval = POWER_SUPPLY_HEALTH_DEAD;
+ else
+ val->intval = POWER_SUPPLY_HEALTH_GOOD;
+ }
+
+ return 0;
+}
+
+static int bq20z75_get_battery_property(struct i2c_client *client,
+ int reg_offset, enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ s32 ret;
+
+ ret = bq20z75_read_word_data(client,
+ bq20z75_data[reg_offset].addr);
+ if (ret < 0)
+ return ret;
+
+ /* returned values are 16 bit */
+ if (bq20z75_data[reg_offset].min_value < 0)
+ ret = (s16)ret;
+
+ if (ret >= bq20z75_data[reg_offset].min_value &&
+ ret <= bq20z75_data[reg_offset].max_value) {
+ val->intval = ret;
+ if (psp == POWER_SUPPLY_PROP_STATUS) {
+ if (ret & BATTERY_FULL_CHARGED)
+ val->intval = POWER_SUPPLY_STATUS_FULL;
+ else if (ret & BATTERY_FULL_DISCHARGED)
+ val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING;
+ else if (ret & BATTERY_DISCHARGING)
+ val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
+ else
+ val->intval = POWER_SUPPLY_STATUS_CHARGING;
+ }
+ } else {
+ if (psp == POWER_SUPPLY_PROP_STATUS)
+ val->intval = POWER_SUPPLY_STATUS_UNKNOWN;
+ else
+ val->intval = 0;
+ }
+
+ return 0;
+}
+
+static void bq20z75_unit_adjustment(struct i2c_client *client,
+ enum power_supply_property psp, union power_supply_propval *val)
+{
+#define BASE_UNIT_CONVERSION 1000
+#define BATTERY_MODE_CAP_MULT_WATT (10 * BASE_UNIT_CONVERSION)
+#define TIME_UNIT_CONVERSION 600
+#define TEMP_KELVIN_TO_CELCIUS 2731
+ switch (psp) {
+ case POWER_SUPPLY_PROP_ENERGY_NOW:
+ case POWER_SUPPLY_PROP_ENERGY_FULL:
+ case POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN:
+ val->intval *= BATTERY_MODE_CAP_MULT_WATT;
+ break;
+
+ case POWER_SUPPLY_PROP_VOLTAGE_NOW:
+ case POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN:
+ case POWER_SUPPLY_PROP_CURRENT_NOW:
+ val->intval *= BASE_UNIT_CONVERSION;
+ break;
+
+ case POWER_SUPPLY_PROP_TEMP:
+ /* bq20z75 provides battery tempreture in 0.1°K
+ * so convert it to 0.1°C */
+ val->intval -= TEMP_KELVIN_TO_CELCIUS;
+ val->intval *= 10;
+ break;
+
+ case POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG:
+ case POWER_SUPPLY_PROP_TIME_TO_FULL_AVG:
+ val->intval *= TIME_UNIT_CONVERSION;
+ break;
+
+ default:
+ dev_dbg(&client->dev,
+ "%s: no need for unit conversion %d\n", __func__, psp);
+ }
+}
+
+static int bq20z75_get_battery_capacity(struct i2c_client *client,
+ int reg_offset, enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ s32 ret;
+
+ ret = bq20z75_read_word_data(client, bq20z75_data[reg_offset].addr);
+ if (ret < 0)
+ return ret;
+
+ if (psp == POWER_SUPPLY_PROP_CAPACITY) {
+ /* bq20z75 spec says that this can be >100 %
+ * even if max value is 100 % */
+ val->intval = min(ret, 100);
+ } else
+ val->intval = ret;
+
+ return 0;
+}
+
+static char bq20z75_serial[5];
+static int bq20z75_get_battery_serial_number(struct i2c_client *client,
+ union power_supply_propval *val)
+{
+ int ret;
+
+ ret = bq20z75_read_word_data(client,
+ bq20z75_data[REG_SERIAL_NUMBER].addr);
+ if (ret < 0)
+ return ret;
+
+ ret = sprintf(bq20z75_serial, "%04x", ret);
+ val->strval = bq20z75_serial;
+
+ return 0;
+}
+
+static int bq20z75_get_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ int count;
+ int ret;
+ struct bq20z75_info *bq20z75_device = container_of(psy,
+ struct bq20z75_info, power_supply);
+ struct i2c_client *client = bq20z75_device->client;
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_PRESENT:
+ case POWER_SUPPLY_PROP_HEALTH:
+ ret = bq20z75_get_battery_presence_and_health(client, psp, val);
+ if (ret)
+ return ret;
+ break;
+
+ case POWER_SUPPLY_PROP_TECHNOLOGY:
+ val->intval = POWER_SUPPLY_TECHNOLOGY_LION;
+ break;
+
+ case POWER_SUPPLY_PROP_ENERGY_NOW:
+ case POWER_SUPPLY_PROP_ENERGY_FULL:
+ case POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN:
+ case POWER_SUPPLY_PROP_CAPACITY:
+ for (count = 0; count < ARRAY_SIZE(bq20z75_data); count++) {
+ if (psp == bq20z75_data[count].psp)
+ break;
+ }
+
+ ret = bq20z75_get_battery_capacity(client, count, psp, val);
+ if (ret)
+ return ret;
+
+ break;
+
+ case POWER_SUPPLY_PROP_SERIAL_NUMBER:
+ ret = bq20z75_get_battery_serial_number(client, val);
+ if (ret)
+ return ret;
+ break;
+
+ case POWER_SUPPLY_PROP_STATUS:
+ case POWER_SUPPLY_PROP_CYCLE_COUNT:
+ case POWER_SUPPLY_PROP_VOLTAGE_NOW:
+ case POWER_SUPPLY_PROP_CURRENT_NOW:
+ case POWER_SUPPLY_PROP_TEMP:
+ case POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG:
+ case POWER_SUPPLY_PROP_TIME_TO_FULL_AVG:
+ case POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN:
+ for (count = 0; count < ARRAY_SIZE(bq20z75_data); count++) {
+ if (psp == bq20z75_data[count].psp)
+ break;
+ }
+
+ ret = bq20z75_get_battery_property(client, count, psp, val);
+ if (ret)
+ return ret;
+
+ break;
+
+ default:
+ dev_err(&client->dev,
+ "%s: INVALID property\n", __func__);
+ return -EINVAL;
+ }
+
+ /* Convert units to match requirements for power supply class */
+ bq20z75_unit_adjustment(client, psp, val);
+
+ dev_dbg(&client->dev,
+ "%s: property = %d, value = %d\n", __func__, psp, val->intval);
+
+ return 0;
+}
+
+static int bq20z75_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct bq20z75_info *bq20z75_device;
+ int rc;
+
+ bq20z75_device = kzalloc(sizeof(struct bq20z75_info), GFP_KERNEL);
+ if (!bq20z75_device)
+ return -ENOMEM;
+
+ bq20z75_device->client = client;
+ bq20z75_device->power_supply.name = "battery";
+ bq20z75_device->power_supply.type = POWER_SUPPLY_TYPE_BATTERY;
+ bq20z75_device->power_supply.properties = bq20z75_properties;
+ bq20z75_device->power_supply.num_properties =
+ ARRAY_SIZE(bq20z75_properties);
+ bq20z75_device->power_supply.get_property = bq20z75_get_property;
+
+ i2c_set_clientdata(client, bq20z75_device);
+
+ rc = power_supply_register(&client->dev, &bq20z75_device->power_supply);
+ if (rc) {
+ dev_err(&client->dev,
+ "%s: Failed to register power supply\n", __func__);
+ kfree(bq20z75_device);
+ return rc;
+ }
+
+ dev_info(&client->dev,
+ "%s: battery gas gauge device registered\n", client->name);
+
+ return 0;
+}
+
+static int bq20z75_remove(struct i2c_client *client)
+{
+ struct bq20z75_info *bq20z75_device = i2c_get_clientdata(client);
+
+ power_supply_unregister(&bq20z75_device->power_supply);
+ kfree(bq20z75_device);
+ bq20z75_device = NULL;
+
+ return 0;
+}
+
+#if defined CONFIG_PM
+static int bq20z75_suspend(struct i2c_client *client,
+ pm_message_t state)
+{
+ s32 ret;
+
+ /* write to manufacturer access with sleep command */
+ ret = bq20z75_write_word_data(client,
+ bq20z75_data[REG_MANUFACTURER_DATA].addr,
+ MANUFACTURER_ACCESS_SLEEP);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+#else
+#define bq20z75_suspend NULL
+#endif
+/* any smbus transaction will wake up bq20z75 */
+#define bq20z75_resume NULL
+
+static const struct i2c_device_id bq20z75_id[] = {
+ { "bq20z75", 0 },
+ {}
+};
+
+static struct i2c_driver bq20z75_battery_driver = {
+ .probe = bq20z75_probe,
+ .remove = bq20z75_remove,
+ .suspend = bq20z75_suspend,
+ .resume = bq20z75_resume,
+ .id_table = bq20z75_id,
+ .driver = {
+ .name = "bq20z75-battery",
+ },
+};
+
+static int __init bq20z75_battery_init(void)
+{
+ return i2c_add_driver(&bq20z75_battery_driver);
+}
+module_init(bq20z75_battery_init);
+
+static void __exit bq20z75_battery_exit(void)
+{
+ i2c_del_driver(&bq20z75_battery_driver);
+}
+module_exit(bq20z75_battery_exit);
+
+MODULE_DESCRIPTION("BQ20z75 battery monitor driver");
+MODULE_LICENSE("GPL");
power_supply_unregister(&di->bat);
+ kfree(di->bus);
kfree(di->bat.name);
mutex_lock(&battery_mutex);
&di->set_charged_work);
destroy_workqueue(di->monitor_wqueue);
power_supply_unregister(&di->bat);
+ kfree(di);
return 0;
}
struct ds278x_battery_ops {
int (*get_battery_current)(struct ds278x_info *info, int *current_uA);
- int (*get_battery_voltage)(struct ds278x_info *info, int *voltage_uA);
- int (*get_battery_capacity)(struct ds278x_info *info, int *capacity_uA);
+ int (*get_battery_voltage)(struct ds278x_info *info, int *voltage_uV);
+ int (*get_battery_capacity)(struct ds278x_info *info, int *capacity);
};
#define to_ds278x_info(x) container_of(x, struct ds278x_info, battery)
return 0;
}
-static int ds2782_get_voltage(struct ds278x_info *info, int *voltage_uA)
+static int ds2782_get_voltage(struct ds278x_info *info, int *voltage_uV)
{
s16 raw;
int err;
err = ds278x_read_reg16(info, DS278x_REG_VOLT_MSB, &raw);
if (err)
return err;
- *voltage_uA = (raw / 32) * 4800;
+ *voltage_uV = (raw / 32) * 4800;
return 0;
}
return 0;
}
-static int ds2786_get_voltage(struct ds278x_info *info, int *voltage_uA)
+static int ds2786_get_voltage(struct ds278x_info *info, int *voltage_uV)
{
s16 raw;
int err;
err = ds278x_read_reg16(info, DS278x_REG_VOLT_MSB, &raw);
if (err)
return err;
- *voltage_uA = (raw / 8) * 1220;
+ *voltage_uV = (raw / 8) * 1220;
return 0;
}
--- /dev/null
+/*
+ * ISP1704 USB Charger Detection driver
+ *
+ * Copyright (C) 2010 Nokia Corporation
+ *
+ * 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/kernel.h>
+#include <linux/module.h>
+#include <linux/err.h>
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/device.h>
+#include <linux/sysfs.h>
+#include <linux/platform_device.h>
+#include <linux/power_supply.h>
+#include <linux/delay.h>
+
+#include <linux/usb/otg.h>
+#include <linux/usb/ulpi.h>
+#include <linux/usb/ch9.h>
+#include <linux/usb/gadget.h>
+
+/* Vendor specific Power Control register */
+#define ISP1704_PWR_CTRL 0x3d
+#define ISP1704_PWR_CTRL_SWCTRL (1 << 0)
+#define ISP1704_PWR_CTRL_DET_COMP (1 << 1)
+#define ISP1704_PWR_CTRL_BVALID_RISE (1 << 2)
+#define ISP1704_PWR_CTRL_BVALID_FALL (1 << 3)
+#define ISP1704_PWR_CTRL_DP_WKPU_EN (1 << 4)
+#define ISP1704_PWR_CTRL_VDAT_DET (1 << 5)
+#define ISP1704_PWR_CTRL_DPVSRC_EN (1 << 6)
+#define ISP1704_PWR_CTRL_HWDETECT (1 << 7)
+
+#define NXP_VENDOR_ID 0x04cc
+
+static u16 isp170x_id[] = {
+ 0x1704,
+ 0x1707,
+};
+
+struct isp1704_charger {
+ struct device *dev;
+ struct power_supply psy;
+ struct otg_transceiver *otg;
+ struct notifier_block nb;
+ struct work_struct work;
+
+ char model[7];
+ unsigned present:1;
+};
+
+/*
+ * ISP1704 detects PS/2 adapters as charger. To make sure the detected charger
+ * is actually a dedicated charger, the following steps need to be taken.
+ */
+static inline int isp1704_charger_verify(struct isp1704_charger *isp)
+{
+ int ret = 0;
+ u8 r;
+
+ /* Reset the transceiver */
+ r = otg_io_read(isp->otg, ULPI_FUNC_CTRL);
+ r |= ULPI_FUNC_CTRL_RESET;
+ otg_io_write(isp->otg, ULPI_FUNC_CTRL, r);
+ usleep_range(1000, 2000);
+
+ /* Set normal mode */
+ r &= ~(ULPI_FUNC_CTRL_RESET | ULPI_FUNC_CTRL_OPMODE_MASK);
+ otg_io_write(isp->otg, ULPI_FUNC_CTRL, r);
+
+ /* Clear the DP and DM pull-down bits */
+ r = ULPI_OTG_CTRL_DP_PULLDOWN | ULPI_OTG_CTRL_DM_PULLDOWN;
+ otg_io_write(isp->otg, ULPI_CLR(ULPI_OTG_CTRL), r);
+
+ /* Enable strong pull-up on DP (1.5K) and reset */
+ r = ULPI_FUNC_CTRL_TERMSELECT | ULPI_FUNC_CTRL_RESET;
+ otg_io_write(isp->otg, ULPI_SET(ULPI_FUNC_CTRL), r);
+ usleep_range(1000, 2000);
+
+ /* Read the line state */
+ if (!otg_io_read(isp->otg, ULPI_DEBUG)) {
+ /* Disable strong pull-up on DP (1.5K) */
+ otg_io_write(isp->otg, ULPI_CLR(ULPI_FUNC_CTRL),
+ ULPI_FUNC_CTRL_TERMSELECT);
+ return 1;
+ }
+
+ /* Is it a charger or PS/2 connection */
+
+ /* Enable weak pull-up resistor on DP */
+ otg_io_write(isp->otg, ULPI_SET(ISP1704_PWR_CTRL),
+ ISP1704_PWR_CTRL_DP_WKPU_EN);
+
+ /* Disable strong pull-up on DP (1.5K) */
+ otg_io_write(isp->otg, ULPI_CLR(ULPI_FUNC_CTRL),
+ ULPI_FUNC_CTRL_TERMSELECT);
+
+ /* Enable weak pull-down resistor on DM */
+ otg_io_write(isp->otg, ULPI_SET(ULPI_OTG_CTRL),
+ ULPI_OTG_CTRL_DM_PULLDOWN);
+
+ /* It's a charger if the line states are clear */
+ if (!(otg_io_read(isp->otg, ULPI_DEBUG)))
+ ret = 1;
+
+ /* Disable weak pull-up resistor on DP */
+ otg_io_write(isp->otg, ULPI_CLR(ISP1704_PWR_CTRL),
+ ISP1704_PWR_CTRL_DP_WKPU_EN);
+
+ return ret;
+}
+
+static inline int isp1704_charger_detect(struct isp1704_charger *isp)
+{
+ unsigned long timeout;
+ u8 r;
+ int ret = 0;
+
+ /* set SW control bit in PWR_CTRL register */
+ otg_io_write(isp->otg, ISP1704_PWR_CTRL,
+ ISP1704_PWR_CTRL_SWCTRL);
+
+ /* enable manual charger detection */
+ r = (ISP1704_PWR_CTRL_SWCTRL | ISP1704_PWR_CTRL_DPVSRC_EN);
+ otg_io_write(isp->otg, ULPI_SET(ISP1704_PWR_CTRL), r);
+ usleep_range(1000, 2000);
+
+ timeout = jiffies + msecs_to_jiffies(300);
+ do {
+ /* Check if there is a charger */
+ if (otg_io_read(isp->otg, ISP1704_PWR_CTRL)
+ & ISP1704_PWR_CTRL_VDAT_DET) {
+ ret = isp1704_charger_verify(isp);
+ break;
+ }
+ } while (!time_after(jiffies, timeout));
+
+ return ret;
+}
+
+static void isp1704_charger_work(struct work_struct *data)
+{
+ int detect;
+ struct isp1704_charger *isp =
+ container_of(data, struct isp1704_charger, work);
+
+ /*
+ * FIXME Only supporting dedicated chargers even though isp1704 can
+ * detect HUB and HOST chargers. If the device has already been
+ * enumerated, the detection will break the connection.
+ */
+ if (isp->otg->state != OTG_STATE_B_IDLE)
+ return;
+
+ /* disable data pullups */
+ if (isp->otg->gadget)
+ usb_gadget_disconnect(isp->otg->gadget);
+
+ /* detect charger */
+ detect = isp1704_charger_detect(isp);
+ if (detect) {
+ isp->present = detect;
+ power_supply_changed(&isp->psy);
+ }
+
+ /* enable data pullups */
+ if (isp->otg->gadget)
+ usb_gadget_connect(isp->otg->gadget);
+}
+
+static int isp1704_notifier_call(struct notifier_block *nb,
+ unsigned long event, void *unused)
+{
+ struct isp1704_charger *isp =
+ container_of(nb, struct isp1704_charger, nb);
+
+ switch (event) {
+ case USB_EVENT_VBUS:
+ schedule_work(&isp->work);
+ break;
+ case USB_EVENT_NONE:
+ if (isp->present) {
+ isp->present = 0;
+ power_supply_changed(&isp->psy);
+ }
+ break;
+ default:
+ return NOTIFY_DONE;
+ }
+
+ return NOTIFY_OK;
+}
+
+static int isp1704_charger_get_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ struct isp1704_charger *isp =
+ container_of(psy, struct isp1704_charger, psy);
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_PRESENT:
+ val->intval = isp->present;
+ break;
+ case POWER_SUPPLY_PROP_MODEL_NAME:
+ val->strval = isp->model;
+ break;
+ case POWER_SUPPLY_PROP_MANUFACTURER:
+ val->strval = "NXP";
+ break;
+ default:
+ return -EINVAL;
+ }
+ return 0;
+}
+
+static enum power_supply_property power_props[] = {
+ POWER_SUPPLY_PROP_PRESENT,
+ POWER_SUPPLY_PROP_MODEL_NAME,
+ POWER_SUPPLY_PROP_MANUFACTURER,
+};
+
+static inline int isp1704_test_ulpi(struct isp1704_charger *isp)
+{
+ int vendor;
+ int product;
+ int i;
+ int ret = -ENODEV;
+
+ /* Test ULPI interface */
+ ret = otg_io_write(isp->otg, ULPI_SCRATCH, 0xaa);
+ if (ret < 0)
+ return ret;
+
+ ret = otg_io_read(isp->otg, ULPI_SCRATCH);
+ if (ret < 0)
+ return ret;
+
+ if (ret != 0xaa)
+ return -ENODEV;
+
+ /* Verify the product and vendor id matches */
+ vendor = otg_io_read(isp->otg, ULPI_VENDOR_ID_LOW);
+ vendor |= otg_io_read(isp->otg, ULPI_VENDOR_ID_HIGH) << 8;
+ if (vendor != NXP_VENDOR_ID)
+ return -ENODEV;
+
+ product = otg_io_read(isp->otg, ULPI_PRODUCT_ID_LOW);
+ product |= otg_io_read(isp->otg, ULPI_PRODUCT_ID_HIGH) << 8;
+
+ for (i = 0; i < ARRAY_SIZE(isp170x_id); i++) {
+ if (product == isp170x_id[i]) {
+ sprintf(isp->model, "isp%x", product);
+ return product;
+ }
+ }
+
+ dev_err(isp->dev, "product id %x not matching known ids", product);
+
+ return -ENODEV;
+}
+
+static int __devinit isp1704_charger_probe(struct platform_device *pdev)
+{
+ struct isp1704_charger *isp;
+ int ret = -ENODEV;
+
+ isp = kzalloc(sizeof *isp, GFP_KERNEL);
+ if (!isp)
+ return -ENOMEM;
+
+ isp->otg = otg_get_transceiver();
+ if (!isp->otg)
+ goto fail0;
+
+ ret = isp1704_test_ulpi(isp);
+ if (ret < 0)
+ goto fail1;
+
+ isp->dev = &pdev->dev;
+ platform_set_drvdata(pdev, isp);
+
+ isp->psy.name = "isp1704";
+ isp->psy.type = POWER_SUPPLY_TYPE_USB;
+ isp->psy.properties = power_props;
+ isp->psy.num_properties = ARRAY_SIZE(power_props);
+ isp->psy.get_property = isp1704_charger_get_property;
+
+ ret = power_supply_register(isp->dev, &isp->psy);
+ if (ret)
+ goto fail1;
+
+ /*
+ * REVISIT: using work in order to allow the otg notifications to be
+ * made atomically in the future.
+ */
+ INIT_WORK(&isp->work, isp1704_charger_work);
+
+ isp->nb.notifier_call = isp1704_notifier_call;
+
+ ret = otg_register_notifier(isp->otg, &isp->nb);
+ if (ret)
+ goto fail2;
+
+ dev_info(isp->dev, "registered with product id %s\n", isp->model);
+
+ return 0;
+fail2:
+ power_supply_unregister(&isp->psy);
+fail1:
+ otg_put_transceiver(isp->otg);
+fail0:
+ kfree(isp);
+
+ dev_err(&pdev->dev, "failed to register isp1704 with error %d\n", ret);
+
+ return ret;
+}
+
+static int __devexit isp1704_charger_remove(struct platform_device *pdev)
+{
+ struct isp1704_charger *isp = platform_get_drvdata(pdev);
+
+ otg_unregister_notifier(isp->otg, &isp->nb);
+ power_supply_unregister(&isp->psy);
+ otg_put_transceiver(isp->otg);
+ kfree(isp);
+
+ return 0;
+}
+
+static struct platform_driver isp1704_charger_driver = {
+ .driver = {
+ .name = "isp1704_charger",
+ },
+ .probe = isp1704_charger_probe,
+ .remove = __devexit_p(isp1704_charger_remove),
+};
+
+static int __init isp1704_charger_init(void)
+{
+ return platform_driver_register(&isp1704_charger_driver);
+}
+module_init(isp1704_charger_init);
+
+static void __exit isp1704_charger_exit(void)
+{
+ platform_driver_unregister(&isp1704_charger_driver);
+}
+module_exit(isp1704_charger_exit);
+
+MODULE_ALIAS("platform:isp1704_charger");
+MODULE_AUTHOR("Nokia Corporation");
+MODULE_DESCRIPTION("ISP170x USB Charger driver");
+MODULE_LICENSE("GPL");
iounmap(jz_battery->base);
release_mem_region(jz_battery->mem->start, resource_size(jz_battery->mem));
+ kfree(jz_battery);
return 0;
}
if (ret)
return ret;
- val->intval = (int)be16_to_cpu(ec_word) * 9760L / 32;
+ val->intval = (s16)be16_to_cpu(ec_word) * 9760L / 32;
break;
case POWER_SUPPLY_PROP_CURRENT_AVG:
ret = olpc_ec_cmd(EC_BAT_CURRENT, NULL, 0, (void *)&ec_word, 2);
if (ret)
return ret;
- val->intval = (int)be16_to_cpu(ec_word) * 15625L / 120;
+ val->intval = (s16)be16_to_cpu(ec_word) * 15625L / 120;
break;
case POWER_SUPPLY_PROP_CAPACITY:
ret = olpc_ec_cmd(EC_BAT_SOC, NULL, 0, &ec_byte, 1);
if (ret)
return ret;
- val->intval = (int)be16_to_cpu(ec_word) * 100 / 256;
+ val->intval = (s16)be16_to_cpu(ec_word) * 100 / 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) * 6250 / 15;
+ val->intval = (s16)be16_to_cpu(ec_word) * 6250 / 15;
break;
case POWER_SUPPLY_PROP_SERIAL_NUMBER:
ret = olpc_ec_cmd(EC_BAT_SERIAL, NULL, 0, (void *)&ser_buf, 8);
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_attribute *attr,
char *buf) {
static char *type_text[] = {
- "Battery", "UPS", "Mains", "USB"
+ "Battery", "UPS", "Mains", "USB",
+ "USB_DCP", "USB_CDP", "USB_ACA"
};
static char *status_text[] = {
"Unknown", "Charging", "Discharging", "Not charging", "Full"
POWER_SUPPLY_ATTR(voltage_min_design),
POWER_SUPPLY_ATTR(voltage_now),
POWER_SUPPLY_ATTR(voltage_avg),
+ POWER_SUPPLY_ATTR(current_max),
POWER_SUPPLY_ATTR(current_now),
POWER_SUPPLY_ATTR(current_avg),
POWER_SUPPLY_ATTR(power_now),
--- /dev/null
+/*
+ * TWL4030/TPS65950 BCI (Battery Charger Interface) driver
+ *
+ * Copyright (C) 2010 Gražvydas Ignotas <notasas@gmail.com>
+ *
+ * based on twl4030_bci_battery.c by TI
+ * Copyright (C) 2008 Texas Instruments, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/platform_device.h>
+#include <linux/interrupt.h>
+#include <linux/i2c/twl.h>
+#include <linux/power_supply.h>
+#include <linux/notifier.h>
+#include <linux/usb/otg.h>
+
+#define TWL4030_BCIMSTATEC 0x02
+#define TWL4030_BCIICHG 0x08
+#define TWL4030_BCIVAC 0x0a
+#define TWL4030_BCIVBUS 0x0c
+#define TWL4030_BCIMFSTS4 0x10
+#define TWL4030_BCICTL1 0x23
+
+#define TWL4030_BCIAUTOWEN BIT(5)
+#define TWL4030_CONFIG_DONE BIT(4)
+#define TWL4030_BCIAUTOUSB BIT(1)
+#define TWL4030_BCIAUTOAC BIT(0)
+#define TWL4030_CGAIN BIT(5)
+#define TWL4030_USBFASTMCHG BIT(2)
+#define TWL4030_STS_VBUS BIT(7)
+#define TWL4030_STS_USB_ID BIT(2)
+
+/* BCI interrupts */
+#define TWL4030_WOVF BIT(0) /* Watchdog overflow */
+#define TWL4030_TMOVF BIT(1) /* Timer overflow */
+#define TWL4030_ICHGHIGH BIT(2) /* Battery charge current high */
+#define TWL4030_ICHGLOW BIT(3) /* Battery cc. low / FSM state change */
+#define TWL4030_ICHGEOC BIT(4) /* Battery current end-of-charge */
+#define TWL4030_TBATOR2 BIT(5) /* Battery temperature out of range 2 */
+#define TWL4030_TBATOR1 BIT(6) /* Battery temperature out of range 1 */
+#define TWL4030_BATSTS BIT(7) /* Battery status */
+
+#define TWL4030_VBATLVL BIT(0) /* VBAT level */
+#define TWL4030_VBATOV BIT(1) /* VBAT overvoltage */
+#define TWL4030_VBUSOV BIT(2) /* VBUS overvoltage */
+#define TWL4030_ACCHGOV BIT(3) /* Ac charger overvoltage */
+
+#define TWL4030_MSTATEC_USB BIT(4)
+#define TWL4030_MSTATEC_AC BIT(5)
+#define TWL4030_MSTATEC_MASK 0x0f
+#define TWL4030_MSTATEC_QUICK1 0x02
+#define TWL4030_MSTATEC_QUICK7 0x07
+#define TWL4030_MSTATEC_COMPLETE1 0x0b
+#define TWL4030_MSTATEC_COMPLETE4 0x0e
+
+static bool allow_usb;
+module_param(allow_usb, bool, 1);
+MODULE_PARM_DESC(allow_usb, "Allow USB charge drawing default current");
+
+struct twl4030_bci {
+ struct device *dev;
+ struct power_supply ac;
+ struct power_supply usb;
+ struct otg_transceiver *transceiver;
+ struct notifier_block otg_nb;
+ int irq_chg;
+ int irq_bci;
+};
+
+/*
+ * clear and set bits on an given register on a given module
+ */
+static int twl4030_clear_set(u8 mod_no, u8 clear, u8 set, u8 reg)
+{
+ u8 val = 0;
+ int ret;
+
+ ret = twl_i2c_read_u8(mod_no, &val, reg);
+ if (ret)
+ return ret;
+
+ val &= ~clear;
+ val |= set;
+
+ return twl_i2c_write_u8(mod_no, val, reg);
+}
+
+static int twl4030_bci_read(u8 reg, u8 *val)
+{
+ return twl_i2c_read_u8(TWL4030_MODULE_MAIN_CHARGE, val, reg);
+}
+
+static int twl4030_clear_set_boot_bci(u8 clear, u8 set)
+{
+ return twl4030_clear_set(TWL4030_MODULE_PM_MASTER, 0,
+ TWL4030_CONFIG_DONE | TWL4030_BCIAUTOWEN | set,
+ TWL4030_PM_MASTER_BOOT_BCI);
+}
+
+static int twl4030bci_read_adc_val(u8 reg)
+{
+ int ret, temp;
+ u8 val;
+
+ /* read MSB */
+ ret = twl4030_bci_read(reg + 1, &val);
+ if (ret)
+ return ret;
+
+ temp = (int)(val & 0x03) << 8;
+
+ /* read LSB */
+ ret = twl4030_bci_read(reg, &val);
+ if (ret)
+ return ret;
+
+ return temp | val;
+}
+
+/*
+ * Check if VBUS power is present
+ */
+static int twl4030_bci_have_vbus(struct twl4030_bci *bci)
+{
+ int ret;
+ u8 hwsts;
+
+ ret = twl_i2c_read_u8(TWL4030_MODULE_PM_MASTER, &hwsts,
+ TWL4030_PM_MASTER_STS_HW_CONDITIONS);
+ if (ret < 0)
+ return 0;
+
+ dev_dbg(bci->dev, "check_vbus: HW_CONDITIONS %02x\n", hwsts);
+
+ /* in case we also have STS_USB_ID, VBUS is driven by TWL itself */
+ if ((hwsts & TWL4030_STS_VBUS) && !(hwsts & TWL4030_STS_USB_ID))
+ return 1;
+
+ return 0;
+}
+
+/*
+ * Enable/Disable USB Charge funtionality.
+ */
+static int twl4030_charger_enable_usb(struct twl4030_bci *bci, bool enable)
+{
+ int ret;
+
+ if (enable) {
+ /* Check for USB charger conneted */
+ if (!twl4030_bci_have_vbus(bci))
+ return -ENODEV;
+
+ /*
+ * Until we can find out what current the device can provide,
+ * require a module param to enable USB charging.
+ */
+ if (!allow_usb) {
+ dev_warn(bci->dev, "USB charging is disabled.\n");
+ return -EACCES;
+ }
+
+ /* forcing the field BCIAUTOUSB (BOOT_BCI[1]) to 1 */
+ ret = twl4030_clear_set_boot_bci(0, TWL4030_BCIAUTOUSB);
+ if (ret < 0)
+ return ret;
+
+ /* forcing USBFASTMCHG(BCIMFSTS4[2]) to 1 */
+ ret = twl4030_clear_set(TWL4030_MODULE_MAIN_CHARGE, 0,
+ TWL4030_USBFASTMCHG, TWL4030_BCIMFSTS4);
+ } else {
+ ret = twl4030_clear_set_boot_bci(TWL4030_BCIAUTOUSB, 0);
+ }
+
+ return ret;
+}
+
+/*
+ * Enable/Disable AC Charge funtionality.
+ */
+static int twl4030_charger_enable_ac(bool enable)
+{
+ int ret;
+
+ if (enable)
+ ret = twl4030_clear_set_boot_bci(0, TWL4030_BCIAUTOAC);
+ else
+ ret = twl4030_clear_set_boot_bci(TWL4030_BCIAUTOAC, 0);
+
+ return ret;
+}
+
+/*
+ * TWL4030 CHG_PRES (AC charger presence) events
+ */
+static irqreturn_t twl4030_charger_interrupt(int irq, void *arg)
+{
+ struct twl4030_bci *bci = arg;
+
+ dev_dbg(bci->dev, "CHG_PRES irq\n");
+ power_supply_changed(&bci->ac);
+ power_supply_changed(&bci->usb);
+
+ return IRQ_HANDLED;
+}
+
+/*
+ * TWL4030 BCI monitoring events
+ */
+static irqreturn_t twl4030_bci_interrupt(int irq, void *arg)
+{
+ struct twl4030_bci *bci = arg;
+ u8 irqs1, irqs2;
+ int ret;
+
+ ret = twl_i2c_read_u8(TWL4030_MODULE_INTERRUPTS, &irqs1,
+ TWL4030_INTERRUPTS_BCIISR1A);
+ if (ret < 0)
+ return IRQ_HANDLED;
+
+ ret = twl_i2c_read_u8(TWL4030_MODULE_INTERRUPTS, &irqs2,
+ TWL4030_INTERRUPTS_BCIISR2A);
+ if (ret < 0)
+ return IRQ_HANDLED;
+
+ dev_dbg(bci->dev, "BCI irq %02x %02x\n", irqs2, irqs1);
+
+ if (irqs1 & (TWL4030_ICHGLOW | TWL4030_ICHGEOC)) {
+ /* charger state change, inform the core */
+ power_supply_changed(&bci->ac);
+ power_supply_changed(&bci->usb);
+ }
+
+ /* various monitoring events, for now we just log them here */
+ if (irqs1 & (TWL4030_TBATOR2 | TWL4030_TBATOR1))
+ dev_warn(bci->dev, "battery temperature out of range\n");
+
+ if (irqs1 & TWL4030_BATSTS)
+ dev_crit(bci->dev, "battery disconnected\n");
+
+ if (irqs2 & TWL4030_VBATOV)
+ dev_crit(bci->dev, "VBAT overvoltage\n");
+
+ if (irqs2 & TWL4030_VBUSOV)
+ dev_crit(bci->dev, "VBUS overvoltage\n");
+
+ if (irqs2 & TWL4030_ACCHGOV)
+ dev_crit(bci->dev, "Ac charger overvoltage\n");
+
+ return IRQ_HANDLED;
+}
+
+static int twl4030_bci_usb_ncb(struct notifier_block *nb, unsigned long val,
+ void *priv)
+{
+ struct twl4030_bci *bci = container_of(nb, struct twl4030_bci, otg_nb);
+
+ dev_dbg(bci->dev, "OTG notify %lu\n", val);
+
+ switch (val) {
+ case USB_EVENT_VBUS:
+ case USB_EVENT_CHARGER:
+ twl4030_charger_enable_usb(bci, true);
+ break;
+ case USB_EVENT_NONE:
+ twl4030_charger_enable_usb(bci, false);
+ break;
+ }
+
+ return NOTIFY_OK;
+}
+
+/*
+ * TI provided formulas:
+ * CGAIN == 0: ICHG = (BCIICHG * 1.7) / (2^10 - 1) - 0.85
+ * CGAIN == 1: ICHG = (BCIICHG * 3.4) / (2^10 - 1) - 1.7
+ * Here we use integer approximation of:
+ * CGAIN == 0: val * 1.6618 - 0.85
+ * CGAIN == 1: (val * 1.6618 - 0.85) * 2
+ */
+static int twl4030_charger_get_current(void)
+{
+ int curr;
+ int ret;
+ u8 bcictl1;
+
+ curr = twl4030bci_read_adc_val(TWL4030_BCIICHG);
+ if (curr < 0)
+ return curr;
+
+ ret = twl4030_bci_read(TWL4030_BCICTL1, &bcictl1);
+ if (ret)
+ return ret;
+
+ ret = (curr * 16618 - 850 * 10000) / 10;
+ if (bcictl1 & TWL4030_CGAIN)
+ ret *= 2;
+
+ return ret;
+}
+
+/*
+ * Returns the main charge FSM state
+ * Or < 0 on failure.
+ */
+static int twl4030bci_state(struct twl4030_bci *bci)
+{
+ int ret;
+ u8 state;
+
+ ret = twl4030_bci_read(TWL4030_BCIMSTATEC, &state);
+ if (ret) {
+ pr_err("twl4030_bci: error reading BCIMSTATEC\n");
+ return ret;
+ }
+
+ dev_dbg(bci->dev, "state: %02x\n", state);
+
+ return state;
+}
+
+static int twl4030_bci_state_to_status(int state)
+{
+ state &= TWL4030_MSTATEC_MASK;
+ if (TWL4030_MSTATEC_QUICK1 <= state && state <= TWL4030_MSTATEC_QUICK7)
+ return POWER_SUPPLY_STATUS_CHARGING;
+ else if (TWL4030_MSTATEC_COMPLETE1 <= state &&
+ state <= TWL4030_MSTATEC_COMPLETE4)
+ return POWER_SUPPLY_STATUS_FULL;
+ else
+ return POWER_SUPPLY_STATUS_NOT_CHARGING;
+}
+
+static int twl4030_bci_get_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ struct twl4030_bci *bci = dev_get_drvdata(psy->dev->parent);
+ int is_charging;
+ int state;
+ int ret;
+
+ state = twl4030bci_state(bci);
+ if (state < 0)
+ return state;
+
+ if (psy->type == POWER_SUPPLY_TYPE_USB)
+ is_charging = state & TWL4030_MSTATEC_USB;
+ else
+ is_charging = state & TWL4030_MSTATEC_AC;
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_STATUS:
+ if (is_charging)
+ val->intval = twl4030_bci_state_to_status(state);
+ else
+ val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING;
+ break;
+ case POWER_SUPPLY_PROP_VOLTAGE_NOW:
+ /* charging must be active for meaningful result */
+ if (!is_charging)
+ return -ENODATA;
+ if (psy->type == POWER_SUPPLY_TYPE_USB) {
+ ret = twl4030bci_read_adc_val(TWL4030_BCIVBUS);
+ if (ret < 0)
+ return ret;
+ /* BCIVBUS uses ADCIN8, 7/1023 V/step */
+ val->intval = ret * 6843;
+ } else {
+ ret = twl4030bci_read_adc_val(TWL4030_BCIVAC);
+ if (ret < 0)
+ return ret;
+ /* BCIVAC uses ADCIN11, 10/1023 V/step */
+ val->intval = ret * 9775;
+ }
+ break;
+ case POWER_SUPPLY_PROP_CURRENT_NOW:
+ if (!is_charging)
+ return -ENODATA;
+ /* current measurement is shared between AC and USB */
+ ret = twl4030_charger_get_current();
+ if (ret < 0)
+ return ret;
+ val->intval = ret;
+ break;
+ case POWER_SUPPLY_PROP_ONLINE:
+ val->intval = is_charging &&
+ twl4030_bci_state_to_status(state) !=
+ POWER_SUPPLY_STATUS_NOT_CHARGING;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static enum power_supply_property twl4030_charger_props[] = {
+ POWER_SUPPLY_PROP_STATUS,
+ POWER_SUPPLY_PROP_ONLINE,
+ POWER_SUPPLY_PROP_VOLTAGE_NOW,
+ POWER_SUPPLY_PROP_CURRENT_NOW,
+};
+
+static int __init twl4030_bci_probe(struct platform_device *pdev)
+{
+ struct twl4030_bci *bci;
+ int ret;
+ int reg;
+
+ bci = kzalloc(sizeof(*bci), GFP_KERNEL);
+ if (bci == NULL)
+ return -ENOMEM;
+
+ bci->dev = &pdev->dev;
+ bci->irq_chg = platform_get_irq(pdev, 0);
+ bci->irq_bci = platform_get_irq(pdev, 1);
+
+ platform_set_drvdata(pdev, bci);
+
+ bci->ac.name = "twl4030_ac";
+ bci->ac.type = POWER_SUPPLY_TYPE_MAINS;
+ bci->ac.properties = twl4030_charger_props;
+ bci->ac.num_properties = ARRAY_SIZE(twl4030_charger_props);
+ bci->ac.get_property = twl4030_bci_get_property;
+
+ ret = power_supply_register(&pdev->dev, &bci->ac);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to register ac: %d\n", ret);
+ goto fail_register_ac;
+ }
+
+ bci->usb.name = "twl4030_usb";
+ bci->usb.type = POWER_SUPPLY_TYPE_USB;
+ bci->usb.properties = twl4030_charger_props;
+ bci->usb.num_properties = ARRAY_SIZE(twl4030_charger_props);
+ bci->usb.get_property = twl4030_bci_get_property;
+
+ ret = power_supply_register(&pdev->dev, &bci->usb);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to register usb: %d\n", ret);
+ goto fail_register_usb;
+ }
+
+ ret = request_threaded_irq(bci->irq_chg, NULL,
+ twl4030_charger_interrupt, 0, pdev->name, bci);
+ if (ret < 0) {
+ dev_err(&pdev->dev, "could not request irq %d, status %d\n",
+ bci->irq_chg, ret);
+ goto fail_chg_irq;
+ }
+
+ ret = request_threaded_irq(bci->irq_bci, NULL,
+ twl4030_bci_interrupt, 0, pdev->name, bci);
+ if (ret < 0) {
+ dev_err(&pdev->dev, "could not request irq %d, status %d\n",
+ bci->irq_bci, ret);
+ goto fail_bci_irq;
+ }
+
+ bci->transceiver = otg_get_transceiver();
+ if (bci->transceiver != NULL) {
+ bci->otg_nb.notifier_call = twl4030_bci_usb_ncb;
+ otg_register_notifier(bci->transceiver, &bci->otg_nb);
+ }
+
+ /* Enable interrupts now. */
+ reg = ~(TWL4030_ICHGLOW | TWL4030_ICHGEOC | TWL4030_TBATOR2 |
+ TWL4030_TBATOR1 | TWL4030_BATSTS);
+ ret = twl_i2c_write_u8(TWL4030_MODULE_INTERRUPTS, reg,
+ TWL4030_INTERRUPTS_BCIIMR1A);
+ if (ret < 0) {
+ dev_err(&pdev->dev, "failed to unmask interrupts: %d\n", ret);
+ goto fail_unmask_interrupts;
+ }
+
+ reg = ~(TWL4030_VBATOV | TWL4030_VBUSOV | TWL4030_ACCHGOV);
+ ret = twl_i2c_write_u8(TWL4030_MODULE_INTERRUPTS, reg,
+ TWL4030_INTERRUPTS_BCIIMR2A);
+ if (ret < 0)
+ dev_warn(&pdev->dev, "failed to unmask interrupts: %d\n", ret);
+
+ twl4030_charger_enable_ac(true);
+ twl4030_charger_enable_usb(bci, true);
+
+ return 0;
+
+fail_unmask_interrupts:
+ if (bci->transceiver != NULL) {
+ otg_unregister_notifier(bci->transceiver, &bci->otg_nb);
+ otg_put_transceiver(bci->transceiver);
+ }
+ free_irq(bci->irq_bci, bci);
+fail_bci_irq:
+ free_irq(bci->irq_chg, bci);
+fail_chg_irq:
+ power_supply_unregister(&bci->usb);
+fail_register_usb:
+ power_supply_unregister(&bci->ac);
+fail_register_ac:
+ platform_set_drvdata(pdev, NULL);
+ kfree(bci);
+
+ return ret;
+}
+
+static int __exit twl4030_bci_remove(struct platform_device *pdev)
+{
+ struct twl4030_bci *bci = platform_get_drvdata(pdev);
+
+ twl4030_charger_enable_ac(false);
+ twl4030_charger_enable_usb(bci, false);
+
+ /* mask interrupts */
+ twl_i2c_write_u8(TWL4030_MODULE_INTERRUPTS, 0xff,
+ TWL4030_INTERRUPTS_BCIIMR1A);
+ twl_i2c_write_u8(TWL4030_MODULE_INTERRUPTS, 0xff,
+ TWL4030_INTERRUPTS_BCIIMR2A);
+
+ if (bci->transceiver != NULL) {
+ otg_unregister_notifier(bci->transceiver, &bci->otg_nb);
+ otg_put_transceiver(bci->transceiver);
+ }
+ free_irq(bci->irq_bci, bci);
+ free_irq(bci->irq_chg, bci);
+ power_supply_unregister(&bci->usb);
+ power_supply_unregister(&bci->ac);
+ platform_set_drvdata(pdev, NULL);
+ kfree(bci);
+
+ return 0;
+}
+
+static struct platform_driver twl4030_bci_driver = {
+ .driver = {
+ .name = "twl4030_bci",
+ .owner = THIS_MODULE,
+ },
+ .remove = __exit_p(twl4030_bci_remove),
+};
+
+static int __init twl4030_bci_init(void)
+{
+ return platform_driver_probe(&twl4030_bci_driver, twl4030_bci_probe);
+}
+module_init(twl4030_bci_init);
+
+static void __exit twl4030_bci_exit(void)
+{
+ platform_driver_unregister(&twl4030_bci_driver);
+}
+module_exit(twl4030_bci_exit);
+
+MODULE_AUTHOR("Gražydas Ignotas");
+MODULE_DESCRIPTION("TWL4030 Battery Charger Interface driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:twl4030_bci");
ret = wm831x_set_bits(wm831x, WM831X_CHARGER_CONTROL_1,
WM831X_CHG_ENA_MASK |
WM831X_CHG_FAST_MASK |
- WM831X_CHG_ITERM_MASK |
WM831X_CHG_ITERM_MASK,
reg1);
if (ret != 0)
power_supply_unregister(&wm831x_power->battery);
power_supply_unregister(&wm831x_power->wall);
power_supply_unregister(&wm831x_power->usb);
+ kfree(wm831x_power);
return 0;
}
POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN,
POWER_SUPPLY_PROP_VOLTAGE_NOW,
POWER_SUPPLY_PROP_VOLTAGE_AVG,
+ POWER_SUPPLY_PROP_CURRENT_MAX,
POWER_SUPPLY_PROP_CURRENT_NOW,
POWER_SUPPLY_PROP_CURRENT_AVG,
POWER_SUPPLY_PROP_POWER_NOW,
POWER_SUPPLY_TYPE_BATTERY = 0,
POWER_SUPPLY_TYPE_UPS,
POWER_SUPPLY_TYPE_MAINS,
- POWER_SUPPLY_TYPE_USB,
+ POWER_SUPPLY_TYPE_USB, /* Standard Downstream Port */
+ POWER_SUPPLY_TYPE_USB_DCP, /* Dedicated Charging Port */
+ POWER_SUPPLY_TYPE_USB_CDP, /* Charging Downstream Port */
+ POWER_SUPPLY_TYPE_USB_ACA, /* Accessory Charger Adapters */
};
union power_supply_propval {
git.openpandora.org / pandora-kernel.git / commitdiff