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Date: Wed, 07 Dec 2011 22:40:22 +0100
From: Pali Rohár <pali.rohar@...il.com>
To: Vladimir Zapolskiy <vz@...ia.com>
Cc: linux-main <linux-kernel@...r.kernel.org>,
linux-omap <linux-omap@...r.kernel.org>,
Samuel Ortiz <sameo@...ux.intel.com>,
Aliaksei Katovich <aliaksei.katovich@...ia.com>,
Felipe Contreras <felipe.contreras@...il.com>,
Anton Vorontsov <cbouatmailru@...il.com>,
Joerg Reisenweber <joerg@...nmoko.org>
Subject: Re: RFC: bq2415x_charger driver
On Wednesday 07 December 2011 23:25:12 Vladimir Zapolskiy wrote:
> Hi Pali,
>
> On 07.12.2011 23:03, Pali Rohár wrote:
> > Hello,
> >
> > I'm sending preview of my implementation of bq2415x charger driver. Now
> > all code is in one kernel module bq2415x_charger which has more
> > interfaces (power_supply, sysfs, regulator). It is still unfinished,
> > missing more bq2415x configuration like sysfs entires for boost,
> > voltages or platform hooks (e.g. rx51 isp1704). This driver will have
> > similar sysfs interface as in Joerg Reisenweber spec
> > http://maemo.cloud-7.de/bq24150-sysnode.spec.txt . Driver should be
> > replacemnt for Nokia N900 proprietary charging program BME. I was
> > inspirated by driver bq27x00_battery and other bq2415x implementaton by
> > Aliaksei Katovich and Felipe Contreras.
> >
> > Please comment implementation and write what should be added or modified
> > in driver (it is still not complete).
>
> There are well defined policies regarding patch review in the Linux
> kernel mailing lists. I encourage you to take a look at
> http://felipec.wordpress.com/2009/10/25/git-send-email-tricks/
Ok, I do not know where to put this driver, so I only send files. Here is diff
diff --git a/drivers/power/bq2415x_charger.c b/drivers/power/bq2415x_charger.c
new file mode 100644
index 0000000..eb9957a
--- /dev/null
+++ b/drivers/power/bq2415x_charger.c
@@ -0,0 +1,1115 @@
+/*
+ bq2415x_charger.c - bq2415x charger driver
+ Copyright (C) 2011 Pali Rohár <pali.rohar@...il.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.
+
+ 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.
+*/
+
+/*
+ Datasheets:
+ http://www.ti.com/product/bq24150
+ http://www.ti.com/product/bq24150a
+ http://www.ti.com/product/bq24152
+ http://www.ti.com/product/bq24153
+ http://www.ti.com/product/bq24153a
+ http://www.ti.com/product/bq24155
+*/
+
+#include <linux/version.h>
+#include <linux/module.h>
+#include <linux/param.h>
+#include <linux/err.h>
+#include <linux/workqueue.h>
+#include <linux/sysfs.h>
+#include <linux/platform_device.h>
+#include <linux/regulator/driver.h>
+#include <linux/power_supply.h>
+#include <linux/idr.h>
+#include <linux/leds.h>
+#include <linux/i2c.h>
+#include <linux/slab.h>
+
+#include "bq2415x_charger.h"
+
+#define BQ2415X_WATCHDOG_TIMEOUT 10
+
+#define BQ2415X_REG_STATUS 0x00
+#define BQ2415X_REG_CONTROL 0x01
+#define BQ2415X_REG_VOLTAGE 0x02
+#define BQ2415X_REG_VENDER 0x03
+#define BQ2415X_REG_CURRENT 0x04
+
+/* reset state for all registers */
+#define BQ2415X_RESET_STATUS BIT(6)
+#define BQ2415X_RESET_CONTROL (BIT(4)|BIT(5))
+#define BQ2415X_RESET_VOLTAGE (BIT(1)|BIT(3))
+#define BQ2415X_RESET_CURRENT (BIT(0)|BIT(3)|BIT(7))
+
+/* status register */
+#define BQ2415X_BIT_TMR_RST 7
+#define BQ2415X_BIT_OTG 7
+#define BQ2415X_BIT_EN_STAT 6
+#define BQ2415X_MASK_STAT (BIT(4)|BIT(5))
+#define BQ2415X_SHIFT_STAT 4
+#define BQ2415X_BIT_BOOST 3
+#define BQ2415X_MASK_FAULT (BIT(0)|BIT(1)|BIT(2))
+#define BQ2415X_SHIFT_FAULT 0
+
+/* control register */
+#define BQ2415X_MASK_LIMIT (BIT(6)|BIT(7))
+#define BQ2415X_SHIFT_LIMIT 6
+#define BQ2415X_MASK_VLOWV (BIT(4)|BIT(5))
+#define BQ2415X_SHIFT_VLOWV 4
+#define BQ2415X_BIT_TE 3
+#define BQ2415X_BIT_CE 2
+#define BQ2415X_BIT_HZ_MODE 1
+#define BQ2415X_BIT_OPA_MODE 0
+
+/* voltage register */
+#define BQ2415X_MASK_VO (BIT(2)|BIT(3)|BIT(4)|BIT(5)|BIT(6)|BIT(7))
+#define BQ2415X_SHIFT_VO 2
+#define BQ2415X_BIT_OTG_PL 1
+#define BQ2415X_BIT_OTG_EN 0
+
+/* vender register */
+#define BQ2415X_MASK_VENDER (BIT(5)|BIT(6)|BIT(7))
+#define BQ2415X_SHIFT_VENDER 5
+#define BQ2415X_MASK_PN (BIT(3)|BIT(4))
+#define BQ2415X_SHIFT_PN 4
+#define BQ2415X_MASK_REVISION (BIT(0)|BIT(1)|BIT(2))
+#define BQ2415X_SHIFT_REVISION 0
+
+/* current register */
+/* RESET BIT(7) */
+#define BQ2415X_MASK_VI_CHRG (BIT(4)|BIT(5)|BIT(6))
+#define BQ2415X_SHIFT_VI_CHRG 4
+/* N/A BIT(3) */
+#define BQ2415X_MASK_VI_TERM (BIT(0)|BIT(1)|BIT(2))
+#define BQ2415X_SHIFT_VI_TERM 0
+
+struct bq2415x_regulator {
+ struct regulator_ops ops;
+ struct regulator_desc desc;
+ struct regulator_dev *dev;
+};
+
+struct bq2415x_device {
+ struct device *dev;
+ struct bq2415x_platform_data *platform_data;
+ struct bq2415x_regulator current_limit;
+ struct bq2415x_regulator weak_battery_voltage;
+ struct bq2415x_regulator battery_regulation_voltage;
+ struct bq2415x_regulator charge_current_sense_voltage;
+ struct bq2415x_regulator termination_current_sense_voltage;
+ struct led_classdev led;
+ struct power_supply charger;
+ struct delayed_work work;
+ int watchdog;
+ enum bq2415x_chip chip;
+ char *name;
+ int id;
+};
+
+static DEFINE_IDR(bq2415x_id);
+static DEFINE_MUTEX(bq2415x_mutex);
+
+/* i2c read functions */
+
+static int bq2415x_i2c_read(struct bq2415x_device *bq, u8 reg)
+{
+ struct i2c_client *client = to_i2c_client(bq->dev);
+ struct i2c_msg msg[2];
+ u8 val;
+ int ret;
+
+ dev_info(bq->dev, "bq2415x_i2c_read reg=%#x\n", reg);
+
+ if (!client->adapter)
+ return -ENODEV;
+
+ msg[0].addr = client->addr;
+ msg[0].flags = 0;
+ msg[0].buf = ®
+ msg[0].len = sizeof(reg);
+ msg[1].addr = client->addr;
+ msg[1].flags = I2C_M_RD;
+ msg[1].buf = &val;
+ msg[1].len = sizeof(val);
+
+ mutex_lock(&bq2415x_mutex);
+ ret = i2c_transfer(client->adapter, msg, ARRAY_SIZE(msg));
+ mutex_unlock(&bq2415x_mutex);
+
+ if (ret < 0)
+ return ret;
+
+ return val;
+}
+
+static int bq2415x_i2c_read_mask(struct bq2415x_device *bq, u8 reg, u8 mask, u8 shift)
+{
+ int ret;
+
+ dev_info(bq->dev, "bq2415x_i2c_read_mask reg=%#x mask=%#x shift=%#x\n", reg, mask, shift);
+
+ if (shift > 8)
+ return -EINVAL;
+
+ ret = bq2415x_i2c_read(bq, reg);
+ if (ret < 0)
+ return ret;
+ else
+ return (ret & mask) >> shift;
+}
+
+static int bq2415x_i2c_read_bit(struct bq2415x_device *bq, u8 reg, u8 bit)
+{
+ if (bit > 8)
+ return -EINVAL;
+ else
+ return bq2415x_i2c_read_mask(bq, reg, BIT(bit), bit);
+}
+
+/* i2c write functions */
+
+static int bq2415x_i2c_write(struct bq2415x_device *bq, u8 reg, u8 val)
+{
+ struct i2c_client *client = to_i2c_client(bq->dev);
+ struct i2c_msg msg[1];
+ u8 data[2];
+ int ret;
+
+ dev_info(bq->dev, "bq2415x_i2c_write reg=%#x val=%#x\n", reg, val);
+
+ data[0] = reg;
+ data[1] = val;
+
+ msg[0].addr = client->addr;
+ msg[0].flags = 0;
+ msg[0].buf = data;
+ msg[0].len = ARRAY_SIZE(data);
+
+ mutex_lock(&bq2415x_mutex);
+ ret = i2c_transfer(client->adapter, msg, ARRAY_SIZE(msg));
+ mutex_unlock(&bq2415x_mutex);
+
+ /* i2c_transfer returns number of messages transferred */
+ if (ret < 0)
+ return ret;
+ else if (ret != 1)
+ return -EIO;
+
+ return 0;
+}
+
+static int bq2415x_i2c_write_mask(struct bq2415x_device *bq, u8 reg, u8 val, u8 mask, u8 shift)
+{
+ int ret;
+
+ dev_info(bq->dev, "bq2415x_i2c_write_mask reg=%#x val=%#x mask=%#x shift=%#x\n", reg, val, mask, shift);
+
+ if (shift > 8)
+ return -EINVAL;
+
+ ret = bq2415x_i2c_read(bq, reg);
+ if (ret < 0)
+ return ret;
+
+ ret &= ~mask;
+ ret |= val << shift;
+
+ return bq2415x_i2c_write(bq, reg, ret);
+}
+
+static int bq2415x_i2c_write_bit(struct bq2415x_device *bq, u8 reg, bool val, u8 bit)
+{
+ if (bit > 8)
+ return -EINVAL;
+ else
+ return bq2415x_i2c_write_mask(bq, reg, val, BIT(bit), bit);
+}
+
+/* global detect chip */
+
+enum bq2415x_chip bq2415x_detect_chip(struct bq2415x_device *bq)
+{
+ struct i2c_client *client = to_i2c_client(bq->dev);
+ int ret = bq2415x_exec_command(bq, BQ2415X_PART_NUMBER);
+ if (ret < 0)
+ return ret;
+ if (client->addr == 0x6b) {
+ switch (ret) {
+ case 0:
+ if (bq->chip == BQ24151A)
+ return bq->chip;
+ else
+ return BQ24151;
+ case 1:
+ if (bq->chip == BQ24150A || bq->chip == BQ24152 || bq->chip == BQ24155)
+ return bq->chip;
+ else
+ return BQ24150;
+ case 2:
+ if (bq->chip == BQ24153A)
+ return bq->chip;
+ else
+ return BQ24153;
+ default:
+ return BQUNKNOWN;
+ }
+ } else if (client->addr == 0x6a) {
+ switch (ret) {
+ case 0:
+ if (bq->chip == BQ24156A)
+ return bq->chip;
+ else
+ return BQ24156;
+ case 2:
+ return BQ24158;
+ default:
+ return BQUNKNOWN;
+ }
+ }
+ return BQUNKNOWN;
+}
+EXPORT_SYMBOL_GPL(bq2415x_detect_chip);
+
+/* global exec command function */
+
+int bq2415x_exec_command(struct bq2415x_device *bq, enum bq2415x_command command)
+{
+ switch(command)
+ {
+ case BQ2415X_WATCHDOG_RESET:
+ return bq2415x_i2c_write_bit(bq, BQ2415X_REG_STATUS, 1, BQ2415X_BIT_TMR_RST);
+ case BQ2415X_OTG_STATUS:
+ return bq2415x_i2c_read_bit(bq, BQ2415X_REG_STATUS, BQ2415X_BIT_OTG);
+ case BQ2415X_STAT_PIN_STATUS:
+ return bq2415x_i2c_read_bit(bq, BQ2415X_REG_STATUS, BQ2415X_BIT_EN_STAT);
+ case BQ2415X_STAT_PIN_ENABLE:
+ return bq2415x_i2c_write_bit(bq, BQ2415X_REG_STATUS, 1, BQ2415X_BIT_EN_STAT);
+ case BQ2415X_STAT_PIN_DISABLE:
+ return bq2415x_i2c_write_bit(bq, BQ2415X_REG_STATUS, 0, BQ2415X_BIT_EN_STAT);
+ case BQ2415X_CHARGE_STATUS:
+ return bq2415x_i2c_read_mask(bq, BQ2415X_REG_STATUS, BQ2415X_MASK_STAT, BQ2415X_SHIFT_STAT);
+ case BQ2415X_BOOST_STATUS:
+ return bq2415x_i2c_read_bit(bq, BQ2415X_REG_STATUS, BQ2415X_BIT_BOOST);
+ case BQ2415X_FAULT_STATUS:
+ return bq2415x_i2c_read_mask(bq, BQ2415X_REG_STATUS, BQ2415X_MASK_FAULT, BQ2415X_SHIFT_FAULT);
+
+ case BQ2415X_CHARGE_CURRENT_TERMINATION_STATUS:
+ return bq2415x_i2c_read_bit(bq, BQ2415X_REG_CONTROL, BQ2415X_BIT_TE);
+ case BQ2415X_CHARGE_CURRENT_TERMINATION_ENABLE:
+ return bq2415x_i2c_write_bit(bq, BQ2415X_REG_CONTROL, 1, BQ2415X_BIT_TE);
+ case BQ2415X_CHARGE_CURRENT_TERMINATION_DISABLE:
+ return bq2415x_i2c_write_bit(bq, BQ2415X_REG_CONTROL, 0, BQ2415X_BIT_TE);
+ case BQ2415X_CHARGER_STATUS:
+ return bq2415x_i2c_read_bit(bq, BQ2415X_REG_CONTROL, BQ2415X_BIT_CE);
+ case BQ2415X_CHARGER_ENABLE:
+ return bq2415x_i2c_write_bit(bq, BQ2415X_REG_CONTROL, 1, BQ2415X_BIT_CE);
+ case BQ2415X_CHARGER_DISABLE:
+ return bq2415x_i2c_write_bit(bq, BQ2415X_REG_CONTROL, 0, BQ2415X_BIT_CE);
+ case BQ2415X_HIGH_IMPEDANCE_STATUS:
+ return bq2415x_i2c_read_bit(bq, BQ2415X_REG_CONTROL, BQ2415X_BIT_HZ_MODE);
+ case BQ2415X_HIGH_IMPEDANCE_ENABLE:
+ return bq2415x_i2c_write_bit(bq, BQ2415X_REG_CONTROL, 1, BQ2415X_BIT_HZ_MODE);
+ case BQ2415X_HIGH_IMPEDANCE_DISABLE:
+ return bq2415x_i2c_write_bit(bq, BQ2415X_REG_CONTROL, 0, BQ2415X_BIT_HZ_MODE);
+ case BQ2415X_MODE:
+ return bq2415x_i2c_read_bit(bq, BQ2415X_REG_CONTROL, BQ2415X_BIT_OPA_MODE);
+ case BQ2415X_SET_BOOST_MODE:
+ return bq2415x_i2c_write_bit(bq, BQ2415X_REG_CONTROL, 1, BQ2415X_BIT_OPA_MODE);
+ case BQ2415X_SET_CHARGER_MODE:
+ return bq2415x_i2c_write_bit(bq, BQ2415X_REG_CONTROL, 0, BQ2415X_BIT_OPA_MODE);
+
+ case BQ2415X_OTG_HIGH_STATUS:
+ return bq2415x_i2c_read_bit(bq, BQ2415X_REG_VOLTAGE, BQ2415X_BIT_OTG_PL);
+ case BQ2415X_OTG_HIGH_ACTIVATE:
+ return bq2415x_i2c_write_bit(bq, BQ2415X_REG_VOLTAGE, 1, BQ2415X_BIT_OTG_PL);
+ case BQ2415X_OTG_LOW_ACTIVATE:
+ return bq2415x_i2c_write_bit(bq, BQ2415X_REG_VOLTAGE, 0, BQ2415X_BIT_OTG_PL);
+ case BQ2415X_OTG_PIN_STATUS:
+ return bq2415x_i2c_read_bit(bq, BQ2415X_REG_VOLTAGE, BQ2415X_BIT_OTG_EN);
+ case BQ2415X_OTG_PIN_ENABLE:
+ return bq2415x_i2c_write_bit(bq, BQ2415X_REG_VOLTAGE, 1, BQ2415X_BIT_OTG_EN);
+ case BQ2415X_OTG_PIN_DISABLE:
+ return bq2415x_i2c_write_bit(bq, BQ2415X_REG_VOLTAGE, 0, BQ2415X_BIT_OTG_EN);
+
+ case BQ2415X_VENDER_CODE:
+ return bq2415x_i2c_read_mask(bq, BQ2415X_REG_VENDER, BQ2415X_MASK_VENDER, BQ2415X_SHIFT_VENDER);
+ case BQ2415X_PART_NUMBER:
+ return bq2415x_i2c_read_mask(bq, BQ2415X_REG_VENDER, BQ2415X_MASK_PN, BQ2415X_SHIFT_PN);
+ case BQ2415X_REVISION:
+ return bq2415x_i2c_read_mask(bq, BQ2415X_REG_VENDER, BQ2415X_MASK_REVISION, BQ2415X_SHIFT_REVISION);
+
+ default:
+ return -EINVAL;
+ }
+}
+EXPORT_SYMBOL_GPL(bq2415x_exec_command);
+
+/* global other functions */
+
+#define bq2415x_set_default_value(bq, value) \
+ do { \
+ int ret = 0; \
+ if (bq->platform_data->value != -1) \
+ ret = bq2415x_set_##value(bq, bq->platform_data->value); \
+ if (ret < 0) \
+ return ret; \
+ } while (0)
+
+int bq2415x_set_defaults(struct bq2415x_device *bq)
+{
+ bq2415x_exec_command(bq, BQ2415X_CHARGER_DISABLE);
+ bq2415x_set_default_value(bq, current_limit);
+ bq2415x_set_default_value(bq, weak_battery_voltage);
+ bq2415x_set_default_value(bq, battery_regulation_voltage);
+ bq2415x_set_default_value(bq, charge_current_sense_voltage);
+ bq2415x_set_default_value(bq, termination_current_sense_voltage);
+ bq2415x_exec_command(bq, BQ2415X_CHARGER_ENABLE);
+ return 0;
+}
+EXPORT_SYMBOL_GPL(bq2415x_set_defaults);
+
+#undef bq2415x_set_default_value
+
+void bq2415x_reset_chip(struct bq2415x_device *bq)
+{
+ bq2415x_i2c_write(bq, BQ2415X_REG_CURRENT, BQ2415X_RESET_CURRENT);
+ bq2415x_i2c_write(bq, BQ2415X_REG_VOLTAGE, BQ2415X_RESET_VOLTAGE);
+ bq2415x_i2c_write(bq, BQ2415X_REG_CONTROL, BQ2415X_RESET_CONTROL);
+ bq2415x_i2c_write(bq, BQ2415X_REG_STATUS, BQ2415X_RESET_STATUS);
+}
+EXPORT_SYMBOL_GPL(bq2415x_reset_chip);
+
+int bq2415x_set_current_limit(struct bq2415x_device *bq, int mA)
+{
+ int val = (mA/100 + (mA%100 > 0 ? 1 : 0) - 1) / 4;
+
+ if (val < 0)
+ val = 0;
+
+ if (val > 3)
+ val = 3;
+
+ return bq2415x_i2c_write_mask(bq, BQ2415X_REG_CONTROL, val, BQ2415X_MASK_LIMIT, BQ2415X_SHIFT_LIMIT);
+}
+EXPORT_SYMBOL_GPL(bq2415x_set_current_limit);
+
+int bq2415x_get_current_limit(struct bq2415x_device *bq)
+{
+ int ret = bq2415x_i2c_read_mask(bq, BQ2415X_REG_CONTROL, BQ2415X_MASK_LIMIT, BQ2415X_SHIFT_LIMIT);
+ if (ret < 0)
+ return ret;
+ else
+ return 100 * (1 + 4*ret);
+}
+EXPORT_SYMBOL_GPL(bq2415x_get_current_limit);
+
+int bq2415x_set_weak_battery_voltage(struct bq2415x_device *bq, int mV)
+{
+ int val = mV/100 + (mV%100 > 0 ? 1 : 0) - 34;
+
+ if (val < 0)
+ val = 0;
+
+ if (val > 3)
+ return -EINVAL;
+
+ return bq2415x_i2c_write_mask(bq, BQ2415X_REG_CONTROL, val, BQ2415X_MASK_VLOWV, BQ2415X_SHIFT_VLOWV);
+}
+EXPORT_SYMBOL_GPL(bq2415x_set_weak_battery_voltage);
+
+int bq2415x_get_weak_battery_voltage(struct bq2415x_device *bq)
+{
+ int ret = bq2415x_i2c_read_mask(bq, BQ2415X_REG_CONTROL, BQ2415X_MASK_VLOWV, BQ2415X_SHIFT_VLOWV);
+ if (ret < 0)
+ return ret;
+ else
+ return 100 * (34 + ret);
+}
+EXPORT_SYMBOL_GPL(bq2415x_get_weak_battery_voltage);
+
+int bq2415x_set_battery_regulation_voltage(struct bq2415x_device *bq, int mV)
+{
+ int val = mV/10 + (mV%10 > 0 ? 1 : 0) - 350;
+
+ if (val < 0)
+ val = 0;
+
+ if (val > 94) /* FIXME: Max is 94 or 122 ? */
+ return -EINVAL;
+
+ return bq2415x_i2c_write_mask(bq, BQ2415X_REG_VOLTAGE, val, BQ2415X_MASK_VO, BQ2415X_SHIFT_VO);
+}
+EXPORT_SYMBOL_GPL(bq2415x_set_battery_regulation_voltage);
+
+int bq2415x_get_battery_regulation_voltage(struct bq2415x_device *bq)
+{
+ int ret = bq2415x_i2c_read_mask(bq, BQ2415X_REG_VOLTAGE, BQ2415X_MASK_VO, BQ2415X_SHIFT_VO);
+ if (ret < 0)
+ return ret;
+ else
+ return 10 * (350 + ret);
+}
+EXPORT_SYMBOL_GPL(bq2415x_get_battery_regulation_voltage);
+
+int bq2415x_set_charge_current_sense_voltage(struct bq2415x_device *bq, int mV)
+{
+ /* TODO */
+ return -1;
+}
+EXPORT_SYMBOL_GPL(bq2415x_set_charge_current_sense_voltage);
+
+int bq2415x_get_charge_current_sense_voltage(struct bq2415x_device *bq)
+{
+ /* TODO */
+ return -1;
+}
+EXPORT_SYMBOL_GPL(bq2415x_get_charge_current_sense_voltage);
+
+int bq2415x_set_termination_current_sense_voltage(struct bq2415x_device *bq, int mV)
+{
+ /* TODO */
+ return -1;
+}
+EXPORT_SYMBOL_GPL(bq2415x_set_termination_current_sense_voltage);
+
+int bq2415x_get_termination_current_sense_voltage(struct bq2415x_device *bq)
+{
+ /* TODO */
+ return -1;
+}
+EXPORT_SYMBOL_GPL(bq2415x_get_termination_current_sense_voltage);
+
+/* current limit regulator */
+
+static int bq2415x_regulator_set_current_limit(struct regulator_dev *rdev, int min_uA, int max_uA)
+{
+ struct bq2415x_device *bq = rdev_get_drvdata(rdev);
+ return bq2415x_set_current_limit(bq, min_uA / 1000);
+}
+
+static int bq2415x_regulator_get_current_limit(struct regulator_dev *rdev)
+{
+ struct bq2415x_device *bq = rdev_get_drvdata(rdev);
+ return bq2415x_get_current_limit(bq) * 1000;
+}
+
+struct regulator_ops bq2415x_regulator_current_limit = {
+ .set_current_limit = bq2415x_regulator_set_current_limit,
+ .get_current_limit = bq2415x_regulator_get_current_limit,
+};
+
+/* weak battery voltage regulator */
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,32)
+static int bq2415x_regulator_list_weak_battery_voltage(struct regulator_dev *rdev, unsigned selector)
+{
+ if (selector > 3)
+ return 0;
+ else
+ return 100000 * (34 + selector);
+}
+#endif
+
+static int bq2415x_regulator_set_weak_battery_voltage(struct regulator_dev *rdev, int min_uV, int max_uV
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,32)
+ , unsigned *selector
+#endif
+ )
+{
+ struct bq2415x_device *bq = rdev_get_drvdata(rdev);
+ return bq2415x_set_weak_battery_voltage(bq, min_uV / 1000);
+}
+
+static int bq2415x_regulator_get_weak_battery_voltage(struct regulator_dev *rdev)
+{
+ struct bq2415x_device *bq = rdev_get_drvdata(rdev);
+ return bq2415x_get_weak_battery_voltage(bq) * 1000;
+}
+
+static struct regulator_ops bq2415x_regulator_weak_battery_voltage = {
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,32)
+ .list_voltage = bq2415x_regulator_list_weak_battery_voltage,
+#endif
+ .set_voltage = bq2415x_regulator_set_weak_battery_voltage,
+ .get_voltage = bq2415x_regulator_get_weak_battery_voltage,
+};
+
+/* battery regulation voltage regulator */
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,32)
+static int bq2415x_regulator_list_battery_regulation_voltage(struct regulator_dev *rdev, unsigned selector)
+{
+ if (selector > 94) /* FIXME: Max is 94 or 122 ? */
+ return 0;
+ else
+ return 10000 * (350 + selector);
+}
+#endif
+
+static int bq2415x_regulator_set_battery_regulation_voltage(struct regulator_dev *rdev, int min_uV, int max_uV
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,32)
+ , unsigned *selector
+#endif
+ )
+{
+ struct bq2415x_device *bq = rdev_get_drvdata(rdev);
+ return bq2415x_set_battery_regulation_voltage(bq, min_uV / 1000);
+}
+
+static int bq2415x_regulator_get_battery_regulation_voltage(struct regulator_dev *rdev)
+{
+ struct bq2415x_device *bq = rdev_get_drvdata(rdev);
+ return bq2415x_get_battery_regulation_voltage(bq) * 1000;
+}
+
+static struct regulator_ops bq2415x_regulator_battery_regulation_voltage = {
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,32)
+ .list_voltage = bq2415x_regulator_list_battery_regulation_voltage,
+#endif
+ .set_voltage = bq2415x_regulator_set_battery_regulation_voltage,
+ .get_voltage = bq2415x_regulator_get_battery_regulation_voltage,
+};
+
+/* charge current sense voltage regulator */
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,32)
+static int bq2415x_regulator_list_charge_current_sense_voltage(struct regulator_dev *rdev, unsigned selector)
+{
+ /* TODO */
+ return 0;
+}
+#endif
+
+static int bq2415x_regulator_set_charge_current_sense_voltage(struct regulator_dev *rdev, int min_uV, int max_uV
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,32)
+ , unsigned *selector
+#endif
+ )
+{
+ struct bq2415x_device *bq = rdev_get_drvdata(rdev);
+ return bq2415x_set_charge_current_sense_voltage(bq, min_uV / 1000);
+}
+
+static int bq2415x_regulator_get_charge_current_sense_voltage(struct regulator_dev *rdev)
+{
+ struct bq2415x_device *bq = rdev_get_drvdata(rdev);
+ return bq2415x_get_charge_current_sense_voltage(bq) * 1000;
+}
+
+static struct regulator_ops bq2415x_regulator_charge_current_sense_voltage = {
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,32)
+ .list_voltage = bq2415x_regulator_list_charge_current_sense_voltage,
+#endif
+ .set_voltage = bq2415x_regulator_set_charge_current_sense_voltage,
+ .get_voltage = bq2415x_regulator_get_charge_current_sense_voltage,
+};
+
+/* termination current sense voltage regulator */
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,32)
+static int bq2415x_regulator_list_termination_current_sense_voltage(struct regulator_dev *rdev, unsigned selector)
+{
+ /* TODO */
+ return 0;
+}
+#endif
+
+static int bq2415x_regulator_set_termination_current_sense_voltage(struct regulator_dev *rdev, int min_uV, int max_uV
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,32)
+ , unsigned *selector
+#endif
+ )
+{
+ struct bq2415x_device *bq = rdev_get_drvdata(rdev);
+ return bq2415x_set_termination_current_sense_voltage(bq, min_uV / 1000);
+}
+
+static int bq2415x_regulator_get_termination_current_sense_voltage(struct regulator_dev *rdev)
+{
+ struct bq2415x_device *bq = rdev_get_drvdata(rdev);
+ return bq2415x_get_termination_current_sense_voltage(bq) * 1000;
+}
+
+static int bq2415x_regulator_enable_termination_current_sense_voltage(struct regulator_dev *rdev)
+{
+ struct bq2415x_device *bq = rdev_get_drvdata(rdev);
+ return bq2415x_exec_command(bq, BQ2415X_CHARGE_CURRENT_TERMINATION_ENABLE);
+}
+
+static int bq2415x_regulator_disable_termination_current_sense_voltage(struct regulator_dev *rdev)
+{
+ struct bq2415x_device *bq = rdev_get_drvdata(rdev);
+ return bq2415x_exec_command(bq, BQ2415X_CHARGE_CURRENT_TERMINATION_DISABLE);
+}
+
+static int bq2415x_regulator_is_enabled_termination_current_sense_voltage(struct regulator_dev *rdev)
+{
+ struct bq2415x_device *bq = rdev_get_drvdata(rdev);
+ return bq2415x_exec_command(bq, BQ2415X_CHARGE_CURRENT_TERMINATION_STATUS);
+}
+
+static struct regulator_ops bq2415x_regulator_termination_current_sense_voltage = {
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,32)
+ .list_voltage = bq2415x_regulator_list_termination_current_sense_voltage,
+#endif
+ .set_voltage = bq2415x_regulator_set_termination_current_sense_voltage,
+ .get_voltage = bq2415x_regulator_get_termination_current_sense_voltage,
+ .enable = bq2415x_regulator_enable_termination_current_sense_voltage,
+ .disable = bq2415x_regulator_disable_termination_current_sense_voltage,
+ .is_enabled = bq2415x_regulator_is_enabled_termination_current_sense_voltage,
+};
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,32)
+#define regulator_register2(desc, dev, init, data) regulator_register(desc, dev, init, data)
+#else
+#define regulator_register2(desc, dev, init, data) regulator_register(desc, dev, data)
+#endif
+
+#define bq2415x_regulator_register(bq, rname, rid, rtype) \
+ do { \
+ bq->rname.desc.name = __stringify(rname); \
+ bq->rname.desc.id = rid; \
+ bq->rname.desc.type = rtype; \
+ bq->rname.desc.owner = THIS_MODULE; \
+ bq->rname.desc.ops = &bq2415x_regulator_##rname; \
+ bq->rname.dev = regulator_register2(&bq->rname.desc, bq->dev, NULL, bq); \
+ if (IS_ERR(bq->rname.dev)) \
+ return PTR_ERR(bq->rname.dev); \
+ } while (0)
+
+#define bq2415x_regulator_unregister(bq, rname) regulator_unregister(bq->rname.dev)
+
+static int bq2415x_regulator_init(struct bq2415x_device *bq)
+{
+/* bq2415x_regulator_register(bq, current_limit, 0, REGULATOR_CURRENT);
+ bq2415x_regulator_register(bq, weak_battery_voltage, 1, REGULATOR_VOLTAGE);
+ bq2415x_regulator_register(bq, battery_regulation_voltage, 2, REGULATOR_VOLTAGE);
+ bq2415x_regulator_register(bq, charge_current_sense_voltage, 3, REGULATOR_VOLTAGE);
+ bq2415x_regulator_register(bq, ermination_current_sense_voltage, 4, REGULATOR_VOLTAGE);*/
+ return 0;
+}
+
+static void bq2415x_regulator_exit(struct bq2415x_device *bq)
+{
+/* bq2415x_regulator_unregister(bq, current_limit);
+ bq2415x_regulator_unregister(bq, weak_battery_voltage);
+ bq2415x_regulator_unregister(bq, battery_regulation_voltage);
+ bq2415x_regulator_unregister(bq, charge_current_sense_voltage);
+ bq2415x_regulator_unregister(bq, termination_current_sense_voltage);*/
+}
+
+#undef bq2415x_regulator_register
+#undef bq2415x_regulator_unregister
+
+/* power supply */
+
+static enum power_supply_property bq2415x_power_supply_props[] = {
+ /* TODO */
+ POWER_SUPPLY_PROP_STATUS,
+};
+
+static void bq2415x_power_supply_work(struct work_struct *work)
+{
+ struct bq2415x_device *bq = container_of(work, struct bq2415x_device, work.work);
+ int ret;
+
+ dev_info(bq->dev, "bq2415x_power_supply_work\n");
+
+ if (bq->watchdog != 1)
+ return;
+
+ ret = bq2415x_exec_command(bq, BQ2415X_WATCHDOG_RESET);
+ if (ret < 0)
+ bq->watchdog = ret;
+
+ if (bq->watchdog != 1)
+ return;
+
+ /* TODO charge */
+
+ schedule_delayed_work(&bq->work, BQ2415X_WATCHDOG_TIMEOUT * HZ);
+}
+
+static void bq2415x_power_supply_update_watchdog(struct bq2415x_device *bq, int auto_enable)
+{
+ if (auto_enable && bq->watchdog == 1)
+ return;
+
+ if (!auto_enable && bq->watchdog == 0)
+ return;
+
+ if (auto_enable) {
+ bq->watchdog = 1;
+ schedule_delayed_work(&bq->work, BQ2415X_WATCHDOG_TIMEOUT * HZ);
+ bq2415x_exec_command(bq, BQ2415X_WATCHDOG_RESET);
+ } else {
+ bq->watchdog = 0;
+ cancel_delayed_work_sync(&bq->work);
+ }
+}
+
+static int bq2415x_power_supply_get_property(struct power_supply *psy, enum power_supply_property psp, union power_supply_propval *val)
+{
+ struct bq2415x_device *bq = container_of(psy, struct bq2415x_device, charger);
+ /* TODO */
+ return -EINVAL;
+}
+
+static int bq2415x_power_supply_init(struct bq2415x_device *bq)
+{
+ int ret;
+
+ bq->charger.name = bq->name;
+ bq->charger.type = POWER_SUPPLY_TYPE_USB;
+ bq->charger.properties = bq2415x_power_supply_props;
+ bq->charger.num_properties = ARRAY_SIZE(bq2415x_power_supply_props);
+ bq->charger.get_property = bq2415x_power_supply_get_property;
+
+ ret = power_supply_register(bq->dev, &bq->charger);
+ if (ret)
+ return ret;
+
+ INIT_DELAYED_WORK(&bq->work, bq2415x_power_supply_work);
+
+ bq2415x_power_supply_update_watchdog(bq, 1);
+ return ret;
+}
+
+static void bq2415x_power_supply_exit(struct bq2415x_device *bq)
+{
+ bq->watchdog = 0;
+ cancel_delayed_work_sync(&bq->work);
+ power_supply_unregister(&bq->charger);
+}
+
+/* sysfs files */
+
+static ssize_t bq2415x_sysfs_show_status(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ struct power_supply *psy = dev_get_drvdata(dev);
+ struct bq2415x_device *bq = container_of(psy, struct bq2415x_device, charger);
+ enum bq2415x_command command;
+ int ret;
+
+ if (strcmp(attr->attr.name, "otg_status") == 0)
+ command = BQ2415X_OTG_STATUS;
+ else if (strcmp(attr->attr.name, "charge_status") == 0)
+ command = BQ2415X_CHARGE_STATUS;
+ else if (strcmp(attr->attr.name, "boost_status") == 0)
+ command = BQ2415X_BOOST_STATUS;
+ else if (strcmp(attr->attr.name, "fault_status") == 0)
+ command = BQ2415X_FAULT_STATUS;
+ else
+ return -EINVAL;
+
+ ret = bq2415x_exec_command(bq, command);
+ if (ret < 0)
+ return ret;
+ else
+ return sprintf(buf, "%d\n", ret);
+}
+
+static ssize_t bq2415x_sysfs_set_watchdog(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
+{
+ struct power_supply *psy = dev_get_drvdata(dev);
+ struct bq2415x_device *bq = container_of(psy, struct bq2415x_device, charger);
+ int ret = 0;
+
+ if (strncmp(buf, "auto", 4) == 0)
+ bq2415x_power_supply_update_watchdog(bq, 1);
+ else if (strncmp(buf, "off", 3) == 0)
+ bq2415x_power_supply_update_watchdog(bq, 0);
+ else
+ ret = bq2415x_exec_command(bq, BQ2415X_WATCHDOG_RESET);
+
+ if (ret < 0)
+ return ret;
+ else
+ return count;
+}
+
+static ssize_t bq2415x_sysfs_show_watchdog(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ struct power_supply *psy = dev_get_drvdata(dev);
+ struct bq2415x_device *bq = container_of(psy, struct bq2415x_device, charger);
+
+ switch (bq->watchdog) {
+ case 1: return sprintf(buf, "auto\n");
+ case 0: return sprintf(buf, "off\n");
+ default: return sprintf(buf, "error %d\n", bq->watchdog);
+ }
+}
+
+/* TODO: Add other sysfs entries */
+
+static DEVICE_ATTR(watchdog, S_IWUSR | S_IRUGO, bq2415x_sysfs_show_watchdog, bq2415x_sysfs_set_watchdog);
+static DEVICE_ATTR(otg_status, S_IRUGO, bq2415x_sysfs_show_status, NULL);
+static DEVICE_ATTR(charge_status, S_IRUGO, bq2415x_sysfs_show_status, NULL);
+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[] = {
+ &dev_attr_watchdog.attr,
+ &dev_attr_otg_status.attr,
+ &dev_attr_charge_status.attr,
+ &dev_attr_boost_status.attr,
+ &dev_attr_fault_status.attr,
+ NULL,
+};
+
+static const struct attribute_group bq2415x_sysfs_attr_group = {
+ .attrs = bq2415x_sysfs_attributes,
+};
+
+static int bq2415x_sysfs_init(struct bq2415x_device *bq)
+{
+ return sysfs_create_group(&bq->charger.dev->kobj, &bq2415x_sysfs_attr_group);
+}
+
+static void bq2415x_sysfs_exit(struct bq2415x_device *bq)
+{
+ sysfs_remove_group(&bq->charger.dev->kobj, &bq2415x_sysfs_attr_group);
+}
+
+/* charger led device on STAT_PIN */
+
+static void bq2415x_led_set(struct led_classdev *led_cdev, enum led_brightness value)
+{
+ struct i2c_client *client = to_i2c_client(led_cdev->dev->parent);
+ struct bq2415x_device *bq = i2c_get_clientdata(client);
+
+ if (value)
+ bq2415x_exec_command(bq, BQ2415X_STAT_PIN_ENABLE);
+ else
+ bq2415x_exec_command(bq, BQ2415X_STAT_PIN_DISABLE);
+}
+
+static enum led_brightness bq2415x_led_get(struct led_classdev *led_cdev)
+{
+ struct i2c_client *client = to_i2c_client(led_cdev->dev->parent);
+ struct bq2415x_device *bq = i2c_get_clientdata(client);
+
+ if (bq2415x_exec_command(bq, BQ2415X_STAT_PIN_STATUS) > 0)
+ return LED_FULL;
+ else
+ return LED_OFF;
+}
+
+static int bq2415x_led_init(struct bq2415x_device *bq)
+{
+ bq->led.name = bq->name;
+ bq->led.brightness_set = bq2415x_led_set;
+ bq->led.brightness_get = bq2415x_led_get;
+ return led_classdev_register(bq->dev, &bq->led);
+}
+
+static void bq2415x_led_exit(struct bq2415x_device *bq)
+{
+ led_classdev_unregister(&bq->led);
+}
+
+/* bq2415x register */
+
+static int bq2415x_probe(struct i2c_client *client, const struct i2c_device_id *id)
+{
+ int ret;
+ int num;
+ char *name;
+ struct bq2415x_device *bq;
+
+ if (!client->dev.platform_data) {
+ dev_err(&client->dev, "platform data not set\n");
+ return -ENODEV;
+ }
+
+ /* Get new ID for the new device */
+ ret = idr_pre_get(&bq2415x_id, GFP_KERNEL);
+ if (ret == 0)
+ return -ENOMEM;
+
+ mutex_lock(&bq2415x_mutex);
+ ret = idr_get_new(&bq2415x_id, client, &num);
+ mutex_unlock(&bq2415x_mutex);
+
+ if (ret < 0)
+ return ret;
+
+ name = kasprintf(GFP_KERNEL, "%s-%d", id->name, num);
+ if (!name) {
+ dev_err(&client->dev, "failed to allocate device name\n");
+ ret = -ENOMEM;
+ goto error_1;
+ }
+
+ bq = kzalloc(sizeof(*bq), GFP_KERNEL);
+ if (!bq) {
+ dev_err(&client->dev, "failed to allocate device data\n");
+ ret = -ENOMEM;
+ goto error_2;
+ }
+
+ i2c_set_clientdata(client, bq);
+
+ bq->id = num;
+ bq->dev = &client->dev;
+ bq->chip = id->driver_data;
+ bq->name = name;
+ bq->platform_data = client->dev.platform_data;
+ bq->watchdog = 0;
+
+ bq2415x_reset_chip(bq);
+
+ ret = bq2415x_regulator_init(bq);
+ if (ret) {
+ dev_err(bq->dev, "failed to register regulators: %d\n", ret);
+ goto error_3;
+ }
+
+ ret = bq2415x_led_init(bq);
+ if (ret) {
+ dev_err(bq->dev, "failed to register led device: %d\n", ret);
+ goto error_4;
+ }
+
+ ret = bq2415x_power_supply_init(bq);
+ if (ret) {
+ dev_err(bq->dev, "failed to register power supply: %d\n", ret);
+ goto error_5;
+ }
+
+ ret = bq2415x_sysfs_init(bq);
+ if (ret) {
+ dev_err(bq->dev, "failed to create sysfs entries: %d\n", ret);
+ goto error_6;
+ }
+
+ bq2415x_set_defaults(bq);
+
+ dev_info(bq->dev, "driver registred\n");
+ return 0;
+
+/*error_7:*/
+ bq2415x_sysfs_exit(bq);
+error_6:
+ bq2415x_power_supply_exit(bq);
+error_5:
+ bq2415x_led_exit(bq);
+error_4:
+ bq2415x_regulator_exit(bq);
+error_3:
+ kfree(bq);
+error_2:
+ kfree(name);
+error_1:
+ mutex_lock(&bq2415x_mutex);
+ idr_remove(&bq2415x_id, num);
+ mutex_unlock(&bq2415x_mutex);
+
+ return ret;
+}
+
+/* bq2415x unregister */
+
+static int bq2415x_remove(struct i2c_client *client)
+{
+ struct bq2415x_device *bq = i2c_get_clientdata(client);
+
+ bq2415x_sysfs_exit(bq);
+ bq2415x_power_supply_exit(bq);
+ bq2415x_led_exit(bq);
+ bq2415x_regulator_exit(bq);
+
+ bq2415x_reset_chip(bq);
+
+ mutex_lock(&bq2415x_mutex);
+ idr_remove(&bq2415x_id, bq->id);
+ mutex_unlock(&bq2415x_mutex);
+
+ dev_info(bq->dev, "driver unregistred\n");
+
+ kfree(bq->name);
+ kfree(bq);
+
+ return 0;
+}
+
+static const struct i2c_device_id bq2415x_i2c_id_table[] = {
+ { "bq2415x", BQUNKNOWN },
+ { "bq24150", BQ24150 },
+ { "bq24150a", BQ24150A },
+ { "bq24151", BQ24151 },
+ { "bq24151a", BQ24151A },
+ { "bq24152", BQ24152 },
+ { "bq24153", BQ24153 },
+ { "bq24153a", BQ24153A },
+ { "bq24155", BQ24155 },
+ { "bq24156", BQ24156 },
+ { "bq24156a", BQ24156A },
+ { "bq24158", BQ24158 },
+ {},
+};
+MODULE_DEVICE_TABLE(i2c, bq2415x_i2c_id_table);
+
+static struct i2c_driver bq2415x_driver = {
+ .driver = {
+ .name = "bq2415x-charger",
+ },
+ .probe = bq2415x_probe,
+ .remove = bq2415x_remove,
+ .id_table = bq2415x_i2c_id_table,
+};
+
+/* BEGIN: Temporary RX51 hack TODO: move to board-rx51.c */
+static struct bq2415x_platform_data rx51_platform_data = {
+ .current_limit = 100, /* mA */
+ .weak_battery_voltage = 3400, /* mV */
+ .battery_regulation_voltage = 4200, /* mV */
+ .charge_current_sense_voltage = -1, /* TODO */
+ .termination_current_sense_voltage = -1, /* TODO */
+};
+static struct i2c_board_info rx51_board_info = {
+ I2C_BOARD_INFO("bq24150", 0x6b),
+ .platform_data = &rx51_platform_data,
+};
+static struct i2c_client *client;
+/* END */
+
+static int __init bq2415x_init(void)
+{
+ /* BEGIN: Temporary RX51 hack TODO: move to board-rx51.c */
+ client = i2c_new_device(i2c_get_adapter(2), &rx51_board_info);
+ /* END */
+
+ return i2c_add_driver(&bq2415x_driver);
+}
+module_init(bq2415x_init);
+
+static void __exit bq2415x_exit(void)
+{
+ /* BEGIN: Temporary RX51 hack TODO: move to board-rx51.c */
+ i2c_unregister_device(client);
+ /* END */
+
+ i2c_del_driver(&bq2415x_driver);
+}
+module_exit(bq2415x_exit);
+
+MODULE_AUTHOR("Pali Rohár <pali.rohar@...il.com>");
+MODULE_DESCRIPTION("bq2415x charger driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/power/bq2415x_charger.h b/drivers/power/bq2415x_charger.h
new file mode 100644
index 0000000..de0ec02
--- /dev/null
+++ b/drivers/power/bq2415x_charger.h
@@ -0,0 +1,97 @@
+/*
+ bq2415x_charger.h - bq2415x charger driver
+ Copyright (C) 2011 Pali Rohár <pali.rohar@...il.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.
+
+ 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.
+*/
+
+#ifndef BQ2415X_CHARGER_H
+#define BQ2415X_CHARGER_H
+
+struct bq2415x_device;
+
+struct bq2415x_platform_data {
+ int current_limit;
+ int weak_battery_voltage;
+ int battery_regulation_voltage;
+ int charge_current_sense_voltage;
+ int termination_current_sense_voltage;
+};
+
+enum bq2415x_command {
+ BQ2415X_WATCHDOG_RESET,
+ BQ2415X_OTG_STATUS,
+ BQ2415X_STAT_PIN_STATUS,
+ BQ2415X_STAT_PIN_ENABLE,
+ BQ2415X_STAT_PIN_DISABLE,
+ BQ2415X_CHARGE_STATUS,
+ BQ2415X_BOOST_STATUS,
+ BQ2415X_FAULT_STATUS,
+
+ BQ2415X_CHARGE_CURRENT_TERMINATION_STATUS,
+ BQ2415X_CHARGE_CURRENT_TERMINATION_ENABLE,
+ BQ2415X_CHARGE_CURRENT_TERMINATION_DISABLE,
+ BQ2415X_CHARGER_STATUS,
+ BQ2415X_CHARGER_ENABLE,
+ BQ2415X_CHARGER_DISABLE,
+ BQ2415X_HIGH_IMPEDANCE_STATUS,
+ BQ2415X_HIGH_IMPEDANCE_ENABLE,
+ BQ2415X_HIGH_IMPEDANCE_DISABLE,
+ BQ2415X_MODE,
+ BQ2415X_SET_BOOST_MODE,
+ BQ2415X_SET_CHARGER_MODE,
+
+ BQ2415X_OTG_HIGH_STATUS,
+ BQ2415X_OTG_HIGH_ACTIVATE,
+ BQ2415X_OTG_LOW_ACTIVATE,
+ BQ2415X_OTG_PIN_STATUS,
+ BQ2415X_OTG_PIN_ENABLE,
+ BQ2415X_OTG_PIN_DISABLE,
+
+ BQ2415X_VENDER_CODE,
+ BQ2415X_PART_NUMBER,
+ BQ2415X_REVISION,
+};
+
+enum bq2415x_chip {
+ BQUNKNOWN,
+ BQ24150,
+ BQ24150A,
+ BQ24151,
+ BQ24151A,
+ BQ24152,
+ BQ24153,
+ BQ24153A,
+ BQ24155,
+ BQ24156,
+ BQ24156A,
+ BQ24158,
+};
+
+enum bq2415x_chip bq2415x_detect_chip(struct bq2415x_device *bq);
+int bq2415x_exec_command(struct bq2415x_device *bq, enum bq2415x_command command);
+int bq2415x_set_defaults(struct bq2415x_device *bq);
+int bq2415x_set_current_limit(struct bq2415x_device *bq, int uA);
+int bq2415x_get_current_limit(struct bq2415x_device *bq);
+int bq2415x_set_weak_battery_voltage(struct bq2415x_device *bq, int mV);
+int bq2415x_get_weak_battery_voltage(struct bq2415x_device *bq);
+int bq2415x_set_battery_regulation_voltage(struct bq2415x_device *bq, int mV);
+int bq2415x_get_battery_regulation_voltage(struct bq2415x_device *bq);
+int bq2415x_set_charge_current_sense_voltage(struct bq2415x_device *bq, int mV);
+int bq2415x_get_charge_current_sense_voltage(struct bq2415x_device *bq);
+int bq2415x_set_termination_current_sense_voltage(struct bq2415x_device *bq, int mV);
+int bq2415x_get_termination_current_sense_voltage(struct bq2415x_device *bq);
+
+#endif
--
Pali Rohár
pali.rohar@...il.com
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