Add new charger driver support for TI BQ24261 charger IC.
TI BQ24261 charger driver relies on extcon notifications to get the
charger cable type and based on that it will set the charging parameters.
Signed-off-by: Ramakrishna Pallala <ramakrishna.pallala@xxxxxxxxx>
Signed-off-by: Jenny TC <jenny.tc@xxxxxxxxx>
---
drivers/power/Kconfig | 6 +
drivers/power/Makefile | 1 +
drivers/power/bq24261_charger.c | 1195 +++++++++++++++++++++++++++++++++
include/linux/power/bq24261_charger.h | 26 +
4 files changed, 1228 insertions(+)
create mode 100644 drivers/power/bq24261_charger.c
create mode 100644 include/linux/power/bq24261_charger.h
diff --git a/drivers/power/Kconfig b/drivers/power/Kconfig
index cb0ae66..d817dd9 100644
--- a/drivers/power/Kconfig
+++ b/drivers/power/Kconfig
@@ -408,6 +408,12 @@ config CHARGER_BQ24190
help
Say Y to enable support for the TI BQ24190 battery charger.
+config CHARGER_BQ24261
+ tristate "TI BQ24261 charger driver"
+ depends on I2C && EXTCON
+ help
+ Say Y here to enable support for TI BQ24261 battery charger.
+
config CHARGER_BQ24257
tristate "TI BQ24250/24251/24257 battery charger driver"
depends on I2C
diff --git a/drivers/power/Makefile b/drivers/power/Makefile
index b0e1bf1..f59d8bd 100644
--- a/drivers/power/Makefile
+++ b/drivers/power/Makefile
@@ -61,6 +61,7 @@ obj-$(CONFIG_CHARGER_MAX8998) += max8998_charger.o
obj-$(CONFIG_CHARGER_QCOM_SMBB) += qcom_smbb.o
obj-$(CONFIG_CHARGER_BQ2415X) += bq2415x_charger.o
obj-$(CONFIG_CHARGER_BQ24190) += bq24190_charger.o
+obj-$(CONFIG_CHARGER_BQ24261) += bq24261_charger.o
obj-$(CONFIG_CHARGER_BQ24257) += bq24257_charger.o
obj-$(CONFIG_CHARGER_BQ24735) += bq24735-charger.o
obj-$(CONFIG_CHARGER_BQ25890) += bq25890_charger.o
diff --git a/drivers/power/bq24261_charger.c b/drivers/power/bq24261_charger.c
new file mode 100644
index 0000000..04b5752
--- /dev/null
+++ b/drivers/power/bq24261_charger.c
@@ -0,0 +1,1195 @@
+/*
+ * bq24261_charger.c - BQ24261 Charger driver
+ *
+ * Copyright (C) 2014 Intel Corporation
+ * Author: Jenny TC <jenny.tc@xxxxxxxxx>
+ * Ramakrishna Pallala <ramakrishna.pallala@xxxxxxxxx>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * 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/version.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/err.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/slab.h>
+#include <linux/device.h>
+#include <linux/i2c.h>
+#include <linux/power_supply.h>
+#include <linux/extcon.h>
+#include <linux/io.h>
+#include <linux/sched.h>
+#include <linux/delay.h>
+#include <linux/acpi.h>
+#include <linux/power/bq24261_charger.h>
+
+#define DEV_NAME "bq24261-charger"
+
+#define EXCEPTION_MONITOR_DELAY (60 * HZ)
+#define WDT_RESET_DELAY (15 * HZ)
+
+/* BQ24261 registers */
+#define BQ24261_STAT_CTRL0_ADDR 0x00
+#define BQ24261_CTRL_ADDR 0x01
+#define BQ24261_BATT_VOL_CTRL_ADDR 0x02
+#define BQ24261_VENDOR_REV_ADDR 0x03
+#define BQ24261_TERM_FCC_ADDR 0x04
+#define BQ24261_VINDPM_STAT_ADDR 0x05
+#define BQ24261_ST_NTC_MON_ADDR 0x06
+
+#define BQ24261_RESET_ENABLE BIT(7)
+
+#define BQ24261_FAULT_MASK GENMASK(2, 0)
+#define BQ24261_VOVP 0x01
+#define BQ24261_LOW_SUPPLY 0x02
+#define BQ24261_THERMAL_SHUTDOWN 0x03
+#define BQ24261_BATT_TEMP_FAULT 0x04
+#define BQ24261_TIMER_FAULT 0x05
+#define BQ24261_BATT_OVP 0x06
+#define BQ24261_NO_BATTERY 0x07
+#define BQ24261_STAT_MASK (0x03 << 4)
+#define BQ24261_STAT_READY 0x00
+#define BQ24261_STAT_CHRG_PRGRSS (0x01 << 4)
+#define BQ24261_STAT_CHRG_DONE (0x02 << 4)
+#define BQ24261_STAT_FAULT (0x03 << 4)
+#define BQ24261_BOOST_MASK BIT(6)
+#define BQ24261_ENABLE_BOOST BIT(6)
+#define BQ24261_TMR_RST_MASK (0x01 << 7)
+#define BQ24261_TMR_RST (0x01 << 7)
+
+#define BQ24261_CE_MASK BIT(1)
+#define BQ24261_CE_DISABLE BIT(1)
+
+#define BQ24261_HiZ_MASK BIT(0)
+#define BQ24261_HiZ_ENABLE BIT(0)
+
+#define BQ24261_ICHRG_MASK GENMASK(7, 3)
+
+#define BQ24261_ITERM_MASK GENMASK(2, 0)
+#define BQ24261_MIN_ITERM 50 /* 50 mA */
+#define BQ24261_MAX_ITERM 300 /* 300 mA */
+
+#define BQ24261_VBREG_MASK GENMASK(7, 2)
+#define BQ24261_VBREG_MIN_CV 3500
+#define BQ24261_VBREG_MAX_CV 4440
+#define BQ24261_VBREG_CV_DIV 20
+#define BQ24261_VBREG_CV_BIT_POS 2
+
+#define BQ24261_INLMT_MASK GENMASK(6, 4)
+#define BQ24261_INLMT_100 0x00
+#define BQ24261_INLMT_150 (0x01 << 4)
+#define BQ24261_INLMT_500 (0x02 << 4)
+#define BQ24261_INLMT_900 (0x03 << 4)
+#define BQ24261_INLMT_1500 (0x04 << 4)
+#define BQ24261_INLMT_2000 (0x05 << 4)
+#define BQ24261_INLMT_2500 (0x06 << 4)
+
+#define BQ24261_TE_MASK BIT(2)
+#define BQ24261_TE_ENABLE BIT(2)
+#define BQ24261_STAT_ENABLE_MASK BIT(3)
+#define BQ24261_STAT_ENABLE BIT(3)
+
+#define BQ24261_VENDOR_MASK GENMASK(7, 5)
+#define BQ24261_PART_MASK GENMASK(4, 3)
+#define BQ24261_REV_MASK (0x07)
+#define VENDOR_BQ2426X (0x02 << 5)
+#define REV_BQ24261 (0x06)
+
+#define BQ24261_TS_MASK BIT(3)
+#define BQ24261_TS_ENABLED BIT(3)
+#define BQ24261_BOOST_ILIM_MASK BIT(4)
+#define BQ24261_BOOST_ILIM_500ma (0x0)
+#define BQ24261_BOOST_ILIM_1A BIT(4)
+#define BQ24261_VINDPM_OFF_MASK BIT(0)
+#define BQ24261_VINDPM_OFF_5V (0x0)
+#define BQ24261_VINDPM_OFF_12V BIT(0)
+
+#define BQ24261_SAFETY_TIMER_MASK GENMASK(6, 5)
+#define BQ24261_SAFETY_TIMER_40MIN 0x00
+#define BQ24261_SAFETY_TIMER_6HR (0x01 << 5)
+#define BQ24261_SAFETY_TIMER_9HR (0x02 << 5)
+#define BQ24261_SAFETY_TIMER_DISABLED (0x03 << 5)
+
+/* Settings for Voltage / DPPM Register (05) */
+#define BQ24261_VBATT_LEVEL1 3700000
+#define BQ24261_VBATT_LEVEL2 3960000
+#define BQ24261_VINDPM_MASK GENMASK(2, 0)
+#define BQ24261_VINDPM_320MV (0x01 << 2)
+#define BQ24261_VINDPM_160MV (0x01 << 1)
+#define BQ24261_VINDPM_80MV (0x01 << 0)
+#define BQ24261_CD_STATUS_MASK (0x01 << 3)
+#define BQ24261_DPM_EN_MASK (0x01 << 4)
+#define BQ24261_DPM_EN_FORCE (0x01 << 4)
+#define BQ24261_LOW_CHG_MASK (0x01 << 5)
+#define BQ24261_LOW_CHG_EN (0x01 << 5)
+#define BQ24261_LOW_CHG_DIS (~BQ24261_LOW_CHG_EN)
+#define BQ24261_DPM_STAT_MASK (0x01 << 6)
+#define BQ24261_MINSYS_STAT_MASK (0x01 << 7)
+
+#define BQ24261_MIN_CC 500 /* 500mA */
+#define BQ24261_MAX_CC 3000 /* 3A */
+#define BQ24261_DEF_CC 1300 /* 1300mA */
+#define BQ24261_MAX_CV 4350 /*4350mV */
+#define BQ24261_DEF_CV 4350 /* 4350mV */
+#define BQ24261_DEF_ITERM 128 /* 128mA */
+#define BQ24261_MIN_TEMP 0 /* 0 degC */
+#define BQ24261_MAX_TEMP 60 /* 60 DegC */
+
+#define ILIM_100MA 100 /* 100mA */
+#define ILIM_500MA 500 /* 500mA */
+#define ILIM_900MA 900 /* 900mA */
+#define ILIM_1500MA 1500 /* 1500mA */
+#define ILIM_2000MA 2000 /* 2000mA */
+#define ILIM_2500MA 2500 /* 2500mA */
+#define ILIM_3000MA 3000 /* 3000mA */
+
+static unsigned int dis_sysfs_write;
+module_param(dis_sysfs_write, int, 0644);
+MODULE_PARM_DESC(dis_sysfs_write,
+ "Disable sysfs write on charge current and voltage");
+
+u16 bq24261_inlmt[][2] = {
+ {100, BQ24261_INLMT_100},
+ {150, BQ24261_INLMT_150},
+ {500, BQ24261_INLMT_500},
+ {900, BQ24261_INLMT_900},
+ {1500, BQ24261_INLMT_1500},
+ {2000, BQ24261_INLMT_2000},
+ {2500, BQ24261_INLMT_2500},
+};
+
+
+enum bq24261_status {
+ BQ24261_CHRGR_STAT_UNKNOWN,
+ BQ24261_CHRGR_STAT_READY,
+ BQ24261_CHRGR_STAT_CHARGING,
+ BQ24261_CHRGR_STAT_FULL,
+ BQ24261_CHRGR_STAT_FAULT,
+};
+
+enum bq2426x_model {
+ BQ2426X = 0,
+ BQ24260,
+ BQ24261,
+};
+
+struct bq24261_charger {
+ struct i2c_client *client;
+ struct bq24261_platform_data *pdata;
+ struct power_supply *psy_usb;
+ struct delayed_work fault_mon_work;
+ struct mutex lock;
+ enum bq2426x_model model;
+ struct delayed_work wdt_work;
+ struct work_struct irq_work;
+ struct list_head irq_queue;
+
+ /* extcon charger cables */
+ struct {
+ struct work_struct work;
+ struct notifier_block nb;
+ struct extcon_specific_cable_nb sdp;
+ struct extcon_specific_cable_nb cdp;
+ struct extcon_specific_cable_nb dcp;
+ struct extcon_specific_cable_nb otg;
+ enum power_supply_type chg_type;
+ bool boost;
+ bool connected;
+ } cable;
+
+ bool online;
+ bool present;
+ int chg_health;
+ enum bq24261_status chg_status;
+ int cc;
+ int cv;
+ int inlmt;
+ int max_cc;
+ int max_cv;
+ int iterm;
+ int max_temp;
+ int min_temp;
+ bool is_charging_enabled;
+};
+
+static inline int bq24261_read_reg(struct i2c_client *client, u8 reg)
+{
+ int ret;
+
+ ret = i2c_smbus_read_byte_data(client, reg);
+ if (ret < 0)
+ dev_err(&client->dev,
+ "error(%d) in reading reg %d\n", ret, reg);
+ return ret;
+}
+
+static inline int bq24261_write_reg(struct i2c_client *client, u8 reg, u8 data)
+{
+ int ret;
+
+ ret = i2c_smbus_write_byte_data(client, reg, data);
+ if (ret < 0)
+ dev_err(&client->dev,
+ "error(%d) in writing %d to reg %d\n", ret, data, reg);
+ return ret;
+}
+
+static inline int bq24261_update_reg(struct i2c_client *client, u8 reg,
+ u8 mask, u8 val)
+{
+ int ret;
+
+ ret = bq24261_read_reg(client, reg);
+ if (ret < 0)
+ return ret;
+
+ ret = (ret & ~mask) | (mask & val);
+ return bq24261_write_reg(client, reg, ret);
+}
+
+static void lookup_regval(u16 tbl[][2], size_t size, u16 in_val, u8 *out_val)
+{
+ int i;
+
+ for (i = 1; i < size; ++i) {
+ if (in_val < tbl[i][0])
+ break;
+ }
+
+ *out_val = (u8) tbl[i - 1][1];
+}
+
+void bq24261_cc_to_reg(int cc, u8 *reg_val)
+{
+ /*
+ * Ichrg bits are B3-B7
+ * Icharge = 500mA + IchrgCode * 100mA
+ */
+ cc = clamp_t(int, cc, BQ24261_MIN_CC, BQ24261_MAX_CC);
+ cc = cc - BQ24261_MIN_CC;
+ *reg_val = (cc / 100) << 3;
+}
+
+void bq24261_cv_to_reg(int cv, u8 *reg_val)
+{
+ int val;
+
+ val = clamp_t(int, cv, BQ24261_VBREG_MIN_CV, BQ24261_VBREG_MAX_CV);
+ *reg_val = (((val - BQ24261_VBREG_MIN_CV) / BQ24261_VBREG_CV_DIV)
+ << BQ24261_VBREG_CV_BIT_POS);
+}
+
+void bq24261_inlmt_to_reg(int inlmt, u8 *regval)
+{
+ return lookup_regval(bq24261_inlmt, ARRAY_SIZE(bq24261_inlmt),
+ inlmt, regval);
+}
+
+static inline void bq24261_iterm_to_reg(int iterm, u8 *regval)
+{
+ /*
+ * Iterm bits are B0-B2
+ * Icharge = 50mA + ItermCode * 50mA
+ */
+ iterm = clamp_t(int, iterm, BQ24261_MIN_ITERM, BQ24261_MAX_ITERM);
+ iterm = iterm - BQ24261_MIN_ITERM;
+ *regval = iterm / 50;
+}
+
+static inline int bq24261_init_timers(struct bq24261_charger *chip)
+{
+ u8 reg_val;
+ int ret;
+
+ reg_val = BQ24261_SAFETY_TIMER_9HR;
+
+ if (chip->pdata->thermal_sensing)
+ reg_val |= BQ24261_TS_ENABLED;
+
+ ret = bq24261_update_reg(chip->client, BQ24261_ST_NTC_MON_ADDR,
+ BQ24261_TS_MASK | BQ24261_SAFETY_TIMER_MASK |
+ BQ24261_BOOST_ILIM_MASK, reg_val);
+
+ return ret;
+}
+
+static inline int bq24261_reset_wdt_timer(struct bq24261_charger *chip)
+{
+ u8 mask = BQ24261_TMR_RST_MASK, val = BQ24261_TMR_RST;
+
+ if (chip->cable.boost) {
+ mask |= BQ24261_BOOST_MASK;
+ val |= BQ24261_ENABLE_BOOST;
+ }
+
+ return bq24261_update_reg(chip->client, BQ24261_STAT_CTRL0_ADDR,
+ mask, val);
+}
+
+static inline int bq24261_set_cc(struct bq24261_charger *chip, int cc_mA)
+{
+ u8 reg_val;
+ int ret;
+
+ dev_dbg(&chip->client->dev, "%s=%d\n", __func__, cc_mA);
+
+ if (cc_mA && (cc_mA < BQ24261_MIN_CC)) {
+ dev_dbg(&chip->client->dev, "Set LOW_CHG bit\n");
+ reg_val = BQ24261_LOW_CHG_EN;
+ ret = bq24261_update_reg(chip->client,
+ BQ24261_VINDPM_STAT_ADDR,
+ BQ24261_LOW_CHG_MASK, reg_val);
+ return ret;
+ }
+
+ reg_val = BQ24261_LOW_CHG_DIS;
+ ret = bq24261_update_reg(chip->client, BQ24261_VINDPM_STAT_ADDR,
+ BQ24261_LOW_CHG_MASK, reg_val);
+
+ bq24261_cc_to_reg(cc_mA, ®_val);
+
+ return bq24261_update_reg(chip->client, BQ24261_TERM_FCC_ADDR,
+ BQ24261_ICHRG_MASK, reg_val);
+}
+
+static inline int bq24261_set_cv(struct bq24261_charger *chip, int cv_mV)
+{
+ u8 reg_val;
+
+ dev_dbg(&chip->client->dev, "%s=%d\n", __func__, cv_mV);
+
+ bq24261_cv_to_reg(cv_mV, ®_val);
+
+ return bq24261_update_reg(chip->client, BQ24261_BATT_VOL_CTRL_ADDR,
+ BQ24261_VBREG_MASK, reg_val);
+}
+
+static inline int bq24261_set_inlmt(struct bq24261_charger *chip, int inlmt)
+{
+ u8 reg_val;
+
+ dev_dbg(&chip->client->dev, "%s=%d\n", __func__, inlmt);
+
+ bq24261_inlmt_to_reg(inlmt, ®_val);
+
+ /*
+ * Don't enable reset bit. Setting this
+ * bit will reset all the registers
+ */
+ reg_val &= ~BQ24261_RESET_ENABLE;
+
+ return bq24261_update_reg(chip->client, BQ24261_CTRL_ADDR,
+ BQ24261_RESET_ENABLE | BQ24261_INLMT_MASK, reg_val);
+
+}
+
+static inline int bq24261_set_iterm(struct bq24261_charger *chip, int iterm)
+{
+ u8 reg_val;
+
+ bq24261_iterm_to_reg(iterm, ®_val);
+
+ return bq24261_update_reg(chip->client, BQ24261_TERM_FCC_ADDR,
+ BQ24261_ITERM_MASK, reg_val);
+}
+
+static inline int bq24261_enable_charging(struct bq24261_charger *chip,
+ bool enable)
+{
+ int ret;
+ u8 reg_val;
+
+ if (enable) {
+ reg_val = (~BQ24261_CE_DISABLE & BQ24261_CE_MASK);
+ reg_val |= BQ24261_TE_ENABLE;
+ } else {
+ reg_val = BQ24261_CE_DISABLE;
+ }
+
+ reg_val |= BQ24261_STAT_ENABLE;
+
+ /*
+ * Don't enable reset bit. Setting this
+ * bit will reset all the registers
+ */
+ reg_val &= ~BQ24261_RESET_ENABLE;
+
+ ret = bq24261_update_reg(chip->client, BQ24261_CTRL_ADDR,
+ BQ24261_STAT_ENABLE_MASK | BQ24261_RESET_ENABLE |
+ BQ24261_CE_MASK | BQ24261_TE_MASK,
+ reg_val);
+ if (ret || !enable)
+ return ret;
+
+ /* Set termination current */
+ ret = bq24261_set_iterm(chip, chip->iterm);
+ if (ret < 0)
+ dev_err(&chip->client->dev, "failed to set iTerm(%d)\n", ret);
+
+ /* Start WDT and Safety timers */
+ ret = bq24261_init_timers(chip);
+ if (ret)
+ dev_err(&chip->client->dev, "failed to set timers(%d)\n", ret);
+
+ return ret;
+}
+
+static inline int bq24261_enable_charger(struct bq24261_charger *chip,
+ int enable)
+{
+ u8 reg_val;
+ int ret;
+
+ reg_val = enable ? (~BQ24261_HiZ_ENABLE & BQ24261_HiZ_MASK) :
+ BQ24261_HiZ_ENABLE;
+
+ /*
+ * Don't enable reset bit. Setting this
+ * bit will reset all the registers/
+ */
+ reg_val &= ~BQ24261_RESET_ENABLE;
+
+ ret = bq24261_update_reg(chip->client, BQ24261_CTRL_ADDR,
+ BQ24261_HiZ_MASK | BQ24261_RESET_ENABLE, reg_val);
+ if (ret)
+ return ret;
+
+ return bq24261_reset_wdt_timer(chip);
+}
+
+static void bq24261_handle_health(struct bq24261_charger *chip, u8 stat_reg)
+{
+ struct i2c_client *client = chip->client;
+ bool fault_worker = false;
+
+ switch (stat_reg & BQ24261_FAULT_MASK) {
+ case BQ24261_VOVP:
+ chip->chg_health = POWER_SUPPLY_HEALTH_OVERVOLTAGE;
+ fault_worker = true;
+ dev_err(&client->dev, "Charger Over Voltage Fault\n");
+ break;
+ case BQ24261_LOW_SUPPLY:
+ chip->chg_health = POWER_SUPPLY_HEALTH_DEAD;
+ fault_worker = true;
+ dev_err(&client->dev, "Charger Low Supply Fault\n");
+ break;
+ case BQ24261_THERMAL_SHUTDOWN:
+ chip->chg_health = POWER_SUPPLY_HEALTH_OVERHEAT;
+ dev_err(&client->dev, "Charger Thermal Fault\n");
+ break;
+ case BQ24261_BATT_TEMP_FAULT:
+ dev_err(&client->dev, "Battery Temperature Fault\n");
+ break;
+ case BQ24261_TIMER_FAULT:
+ chip->chg_health = POWER_SUPPLY_HEALTH_UNSPEC_FAILURE;
+ dev_err(&client->dev, "Charger Timer Fault\n");
+ break;
+ case BQ24261_BATT_OVP:
+ chip->chg_health = POWER_SUPPLY_HEALTH_UNSPEC_FAILURE;
+ dev_err(&client->dev, "Battery Over Voltage Fault\n");
+ break;
+ case BQ24261_NO_BATTERY:
+ dev_err(&client->dev, "No Battery Connected\n");
+ break;
+ default:
+ chip->chg_health = POWER_SUPPLY_HEALTH_GOOD;
+ }
+
+ if (fault_worker)
+ schedule_delayed_work(&chip->fault_mon_work,
+ EXCEPTION_MONITOR_DELAY);
+}
+
+static void bq24261_handle_status(struct bq24261_charger *chip, u8 stat_reg)
+{
+ struct i2c_client *client = chip->client;
+
+ switch (stat_reg & BQ24261_STAT_MASK) {
+ case BQ24261_STAT_READY:
+ chip->chg_status = BQ24261_CHRGR_STAT_READY;
+ dev_info(&client->dev, "Charger Status: Ready\n");
+ break;
+ case BQ24261_STAT_CHRG_PRGRSS:
+ chip->chg_status = BQ24261_CHRGR_STAT_CHARGING;
+ dev_info(&client->dev, "Charger Status: Charge Progress\n");
+ break;
+ case BQ24261_STAT_CHRG_DONE:
+ chip->chg_status = BQ24261_CHRGR_STAT_FULL;
+ dev_info(&client->dev, "Charger Status: Charge Done\n");
+ break;
+ case BQ24261_STAT_FAULT:
+ chip->chg_status = BQ24261_CHRGR_STAT_FAULT;
+ dev_warn(&client->dev, "Charger Status: Fault\n");
+ break;
+ default:
+ dev_info(&client->dev, "Invalid\n");
+ }
+}
+
+static int bq24261_get_charger_health(struct bq24261_charger *chip)
+{
+ if (!chip->present)
+ return POWER_SUPPLY_HEALTH_UNKNOWN;
+
+ return chip->chg_health;
+}
+
+static int bq24261_get_charging_status(struct bq24261_charger *chip)
+{
+ int status;
+
+ if (!chip->present)
+ return POWER_SUPPLY_STATUS_DISCHARGING;
+
+ switch (chip->chg_status) {
+ case BQ24261_CHRGR_STAT_READY:
+ status = POWER_SUPPLY_STATUS_DISCHARGING;
+ break;
+ case BQ24261_CHRGR_STAT_CHARGING:
+ status = POWER_SUPPLY_STATUS_CHARGING;
+ break;
+ case BQ24261_CHRGR_STAT_FULL:
+ status = POWER_SUPPLY_STATUS_FULL;
+ break;
+ case BQ24261_CHRGR_STAT_FAULT:
+ status = POWER_SUPPLY_STATUS_NOT_CHARGING;
+ break;
+ default:
+ status = POWER_SUPPLY_STATUS_DISCHARGING;
+ }
+
+ return status;
+}
+
+static int bq24261_usb_get_property(struct power_supply *psy,
+ enum power_supply_property psp, union power_supply_propval *val)
+{
+ struct bq24261_charger *chip = power_supply_get_drvdata(psy);
+
+ mutex_lock(&chip->lock);
+ switch (psp) {
+ case POWER_SUPPLY_PROP_PRESENT:
+ val->intval = chip->present;
+ break;
+ case POWER_SUPPLY_PROP_ONLINE:
+ val->intval = chip->online;
+ break;
+ case POWER_SUPPLY_PROP_HEALTH:
+ val->intval = bq24261_get_charger_health(chip);
+ break;
+ case POWER_SUPPLY_PROP_STATUS:
+ val->intval = bq24261_get_charging_status(chip);
+ break;
+ case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX:
+ val->intval = chip->pdata->max_cc * 1000;
+ break;
+ case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX:
+ val->intval = chip->pdata->max_cv * 1000;
+ break;
+ case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT:
+ val->intval = chip->cc * 1000;
+ break;
+ case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE:
+ val->intval = chip->cv * 1000;
+ break;
+ case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT:
+ val->intval = chip->inlmt * 1000;
+ break;
+ case POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT:
+ val->intval = chip->iterm * 1000;
+ break;
+ case POWER_SUPPLY_PROP_TEMP_MAX:
+ val->intval = chip->pdata->max_temp * 10;
+ break;
+ case POWER_SUPPLY_PROP_TEMP_MIN:
+ val->intval = chip->pdata->min_temp * 10;
+ break;
+ default:
+ mutex_unlock(&chip->lock);
+ return -EINVAL;
+ }
+ mutex_unlock(&chip->lock);
+
+ return 0;
+}
+
+static int bq24261_usb_set_property(struct power_supply *psy,
+ enum power_supply_property psp, const union power_supply_propval *val)
+{
+ struct bq24261_charger *chip = power_supply_get_drvdata(psy);
+ int intval, ret = 0;
+
+ mutex_lock(&chip->lock);
+ switch (psp) {
+ case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT:
+ /* convert uA to mA */
+ intval = val->intval / 1000;
+ if (intval > chip->max_cc) {
+ ret = -EINVAL;
+ break;
+ }
+
+ ret = bq24261_set_cc(chip, intval);
+ if (!ret)
+ chip->cc = intval;
+ break;
+ case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE:
+ /* convert uA to mV */
+ intval = val->intval / 1000;
+ if (intval > chip->max_cv) {
+ ret = -EINVAL;
+ break;
+ }
+
+ ret = bq24261_set_cv(chip, intval);
+ if (!ret)
+ chip->cv = intval;
+ break;
+ default:
+ ret = -EINVAL;
+ }
+ mutex_unlock(&chip->lock);
+
+ return ret;
+}
+
+static int bq24261_property_is_writeable(struct power_supply *psy,
+ enum power_supply_property psp)
+{
+ int ret;
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT:
+ case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE:
+ ret = 1;
+ break;
+ default:
+ ret = 0;
+ }
+
+ return ret;
+}
+
+static enum power_supply_property bq24261_usb_props[] = {
+ POWER_SUPPLY_PROP_PRESENT,
+ POWER_SUPPLY_PROP_ONLINE,
+ POWER_SUPPLY_PROP_TYPE,
+ POWER_SUPPLY_PROP_HEALTH,
+ POWER_SUPPLY_PROP_STATUS,
+ POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX,
+ POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX,
+ POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT,
+ POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE,
+ POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT,
+ POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT,
+ POWER_SUPPLY_PROP_TEMP_MAX,
+ POWER_SUPPLY_PROP_TEMP_MIN,
+};
+
+static char *bq24261_charger_supplied_to[] = {
+ "main-battery",
+};
+
+static struct power_supply_desc bq24261_charger_desc = {
+ .name = DEV_NAME,
+ .type = POWER_SUPPLY_TYPE_USB,
+ .properties = bq24261_usb_props,
+ .num_properties = ARRAY_SIZE(bq24261_usb_props),
+ .get_property = bq24261_usb_get_property,
+};
+
+static void bq24261_wdt_reset_worker(struct work_struct *work)
+{
+
+ struct bq24261_charger *chip = container_of(work,
+ struct bq24261_charger, wdt_work.work);
+ int ret;
+
+ ret = bq24261_reset_wdt_timer(chip);
+ if (ret)
+ dev_err(&chip->client->dev, "WDT timer reset error(%d)\n", ret);
+
+ schedule_delayed_work(&chip->wdt_work, WDT_RESET_DELAY);
+}
+
+static void bq24261_irq_worker(struct work_struct *work)
+{
+ struct bq24261_charger *chip =
+ container_of(work, struct bq24261_charger, irq_work);
+ int ret;
+
+ /*
+ * Lock to ensure that interrupt register readings are done
+ * and processed sequentially. The interrupt Fault registers
+ * are read on clear and without sequential processing double
+ * fault interrupts or fault recovery cannot be handlled propely
+ */
+
+ mutex_lock(&chip->lock);
+
+ ret = bq24261_read_reg(chip->client, BQ24261_STAT_CTRL0_ADDR);
+ if (ret < 0) {
+ dev_err(&chip->client->dev,
+ "Error (%d) in reading BQ24261_STAT_CTRL0_ADDR\n", ret);
+ goto irq_out;
+ }
+
+ if (!chip->cable.boost) {
+ bq24261_handle_status(chip, ret);
+ bq24261_handle_health(chip, ret);
+ power_supply_changed(chip->psy_usb);
+ }
+
+irq_out:
+ mutex_unlock(&chip->lock);
+}
+
+static irqreturn_t bq24261_thread_handler(int id, void *data)
+{
+ struct bq24261_charger *chip = (struct bq24261_charger *)data;
+
+ queue_work(system_highpri_wq, &chip->irq_work);
+ return IRQ_HANDLED;
+}
+
+static void bq24261_fault_mon_work(struct work_struct *work)
+{
+ struct bq24261_charger *chip = container_of(work,
+ struct bq24261_charger, fault_mon_work.work);
+ int ret;
+
+ if ((chip->chg_health == POWER_SUPPLY_HEALTH_OVERVOLTAGE) ||
+ (chip->chg_health == POWER_SUPPLY_HEALTH_DEAD)) {
+
+ mutex_lock(&chip->lock);
+ ret = bq24261_read_reg(chip->client, BQ24261_STAT_CTRL0_ADDR);
+ if (ret < 0) {
+ dev_err(&chip->client->dev,
+ "Status register read failed(%d)\n", ret);
+ goto fault_mon_out;
+ }
+
+ if ((ret & BQ24261_STAT_MASK) == BQ24261_STAT_READY) {
+ dev_info(&chip->client->dev,
+ "Charger fault recovered\n");
+ bq24261_handle_status(chip, ret);
+ bq24261_handle_health(chip, ret);
+ power_supply_changed(chip->psy_usb);
+ }
+fault_mon_out:
+ mutex_unlock(&chip->lock);
+ }
+}
+
+static void bq24261_boost_control(struct bq24261_charger *chip, bool enable)
+{
+ int ret;
+
+ if (enable)
+ ret = bq24261_write_reg(chip->client, BQ24261_STAT_CTRL0_ADDR,
+ BQ24261_TMR_RST | BQ24261_ENABLE_BOOST);
+ else
+ ret = bq24261_write_reg(chip->client,
+ BQ24261_STAT_CTRL0_ADDR, 0x0);
+
+ if (ret < 0)
+ dev_err(&chip->client->dev,
+ "stat cntl0 reg access error(%d)\n", ret);
+}
+
+static void bq24261_extcon_event_work(struct work_struct *work)
+{
+ struct bq24261_charger *chip =
+ container_of(work, struct bq24261_charger, cable.work);
+ int ret, current_limit = 0;
+ bool old_connected = chip->cable.connected;
+
+ /* Determine cable/charger type */
+ if (extcon_get_cable_state(chip->cable.sdp.edev,
+ "SLOW-CHARGER") > 0) {
+ chip->cable.connected = true;
+ current_limit = ILIM_500MA;
+ chip->cable.chg_type = POWER_SUPPLY_TYPE_USB;
+ dev_dbg(&chip->client->dev, "USB SDP charger is connected");
+ } else if (extcon_get_cable_state(chip->cable.cdp.edev,
+ "CHARGE-DOWNSTREAM") > 0) {
+ chip->cable.connected = true;
+ current_limit = ILIM_1500MA;
+ chip->cable.chg_type = POWER_SUPPLY_TYPE_USB_CDP;
+ dev_dbg(&chip->client->dev, "USB CDP charger is connected");
+ } else if (extcon_get_cable_state(chip->cable.dcp.edev,
+ "FAST-CHARGER") > 0) {
+ chip->cable.connected = true;
+ current_limit = ILIM_1500MA;
+ chip->cable.chg_type = POWER_SUPPLY_TYPE_USB_DCP;
+ dev_dbg(&chip->client->dev, "USB DCP charger is connected");
+ } else if (extcon_get_cable_state(chip->cable.otg.edev,
+ "USB-Host") > 0) {
+ chip->cable.boost = true;
+ chip->cable.connected = true;
+ dev_dbg(&chip->client->dev, "USB-Host cable is connected");
+ } else {
+ if (old_connected)
+ dev_dbg(&chip->client->dev, "USB Cable disconnected");
+ chip->cable.connected = false;
+ chip->cable.boost = false;
+ chip->cable.chg_type = POWER_SUPPLY_TYPE_USB;
+ }
+
+ /* Cable status changed */
+ if (old_connected == chip->cable.connected)
+ return;
+
+ mutex_lock(&chip->lock);
+ if (chip->cable.connected && !chip->cable.boost) {
+ chip->inlmt = current_limit;
+ /* Set up charging */
+ ret = bq24261_set_cc(chip, chip->cc);
+ if (ret < 0)
+ dev_err(&chip->client->dev, "set CC failed(%d)", ret);
+ ret = bq24261_set_cv(chip, chip->cv);
+ if (ret < 0)
+ dev_err(&chip->client->dev, "set CV failed(%d)", ret);
+ ret = bq24261_set_inlmt(chip, chip->inlmt);
+ if (ret < 0)
+ dev_err(&chip->client->dev, "set ILIM failed(%d)", ret);
+ ret = bq24261_enable_charger(chip, true);
+ if (ret < 0)
+ dev_err(&chip->client->dev,
+ "enable charger failed(%d)", ret);
+ ret = bq24261_enable_charging(chip, true);
+ if (ret < 0)
+ dev_err(&chip->client->dev,
+ "enable charging failed(%d)", ret);
+
+ chip->is_charging_enabled = true;
+ chip->present = true;
+ chip->online = true;
+ schedule_delayed_work(&chip->wdt_work, 0);
+ } else if (chip->cable.connected && chip->cable.boost) {
+ /* Enable VBUS for Host Mode */
+ bq24261_boost_control(chip, true);
+ schedule_delayed_work(&chip->wdt_work, 0);
+ } else {
+ dev_info(&chip->client->dev, "Cable disconnect event\n");
+ cancel_delayed_work_sync(&chip->wdt_work);
+ cancel_delayed_work_sync(&chip->fault_mon_work);
+ bq24261_boost_control(chip, false);
+ ret = bq24261_enable_charging(chip, false);
+ if (ret < 0)
+ dev_err(&chip->client->dev,
+ "charger disable failed(%d)", ret);
+
+ chip->is_charging_enabled = false;
+ chip->present = false;
+ chip->online = false;
+ chip->inlmt = 0;
+ }
+ bq24261_charger_desc.type = chip->cable.chg_type;
+ mutex_unlock(&chip->lock);
+ power_supply_changed(chip->psy_usb);
+}
+
+static int bq24261_handle_extcon_events(struct notifier_block *nb,
+ unsigned long event, void *param)
+{
+ struct bq24261_charger *chip =
+ container_of(nb, struct bq24261_charger, cable.nb);
+
+ dev_dbg(&chip->client->dev, "external connector event(%ld)\n", event);
+
+ schedule_work(&chip->cable.work);
+ return NOTIFY_OK;
+}
+
+static int bq24261_extcon_register(struct bq24261_charger *chip)
+{
+ int ret;
+
+ INIT_WORK(&chip->cable.work, bq24261_extcon_event_work);
+ chip->cable.nb.notifier_call = bq24261_handle_extcon_events;
+
+ ret = extcon_register_interest(&chip->cable.sdp, NULL,
+ "SLOW-CHARGER", &chip->cable.nb);
+ if (ret < 0) {
+ dev_warn(&chip->client->dev,
+ "extcon SDP registration failed(%d)\n", ret);
+ goto sdp_reg_failed;
+ }
+
+ ret = extcon_register_interest(&chip->cable.cdp, NULL,
+ "CHARGE-DOWNSTREAM", &chip->cable.nb);
+ if (ret < 0) {
+ dev_warn(&chip->client->dev,
+ "extcon CDP registration failed(%d)\n", ret);
+ goto cdp_reg_failed;
+ }
+
+ ret = extcon_register_interest(&chip->cable.dcp, NULL,
+ "FAST-CHARGER", &chip->cable.nb);
+ if (ret < 0) {
+ dev_warn(&chip->client->dev,
+ "extcon DCP registration failed(%d)\n", ret);
+ goto dcp_reg_failed;
+ }
+
+ ret = extcon_register_interest(&chip->cable.otg, NULL,
+ "USB-Host", &chip->cable.nb);
+ if (ret < 0) {
+ dev_warn(&chip->client->dev,
+ "extcon USB-Host registration failed(%d)\n", ret);
+ goto otg_reg_failed;
+ }
+
+ return 0;
+
+otg_reg_failed:
+ extcon_unregister_interest(&chip->cable.dcp);
+dcp_reg_failed:
+ extcon_unregister_interest(&chip->cable.cdp);
+cdp_reg_failed:
+ extcon_unregister_interest(&chip->cable.sdp);
+sdp_reg_failed:
+ return -EPROBE_DEFER;
+}
+
+static void bq24261_of_pdata(struct bq24261_charger *chip)
+{
+ static struct bq24261_platform_data pdata;
+ struct device *dev = &chip->client->dev;
+ int ret, val;
+
+ ret = device_property_read_u32(dev,
+ "ti,charge-current", &val);
+ if (ret < 0)
+ goto of_err;
+ pdata.def_cc = val / 1000;
+
+ ret = device_property_read_u32(dev,
+ "ti,battery-regulation-voltage", &val);
+ if (ret < 0)
+ goto of_err;
+ pdata.def_cv = val / 1000;
+
+ ret = device_property_read_u32(dev,
+ "ti,termination-current", &val);
+ if (ret < 0)
+ goto of_err;
+ pdata.iterm = val / 1000;
+
+ /* get optional parameters */
+ ret = device_property_read_u32(dev,
+ "ti,max-charge-current", &val);
+ if (ret < 0)
+ pdata.max_cc = BQ24261_MAX_CC;
+ else
+ pdata.max_cc = val / 1000;
+
+ ret = device_property_read_u32(dev,
+ "ti,max-charge-voltage", &val);
+ if (ret < 0)
+ pdata.max_cc = BQ24261_MAX_CV;
+ else
+ pdata.max_cv = val / 1000;
+
+ ret = device_property_read_u32(dev,
+ "ti,min-charge-temperature", &val);
+ if (ret < 0)
+ pdata.min_temp = BQ24261_MIN_TEMP;
+ else
+ pdata.min_temp = val;
+
+ ret = device_property_read_u32(dev,
+ "ti,max-charge-temperature", &val);
+ if (ret < 0)
+ pdata.max_temp = BQ24261_MAX_TEMP;
+ else
+ pdata.max_temp = val;
+
+ ret = device_property_read_u32(dev,
+ "ti,thermal-sensing", &val);
+ if (ret < 0)
+ pdata.thermal_sensing = 0;
+ else
+ pdata.thermal_sensing = val;
+
+ chip->pdata = &pdata;
+
+ return;
+of_err:
+ dev_err(dev, "error in getting DT property(%d)\n", ret);
+}
+
+static int bq24261_get_model(struct i2c_client *client,
+ enum bq2426x_model *model)
+{
+ int ret;
+
+ ret = bq24261_read_reg(client, BQ24261_VENDOR_REV_ADDR);
+ if (ret < 0)
+ return ret;
+
+ *model = BQ24261;
+
+ return 0;
+}
+
+static int bq24261_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
+ struct power_supply_config charger_cfg = {};
+ struct bq24261_charger *chip;
+ int ret;
+ enum bq2426x_model model;
+
+ if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
+ dev_err(&client->dev,
+ "I2C adapter %s doesn'tsupport BYTE DATA transfer\n",
+ adapter->name);
+ return -EIO;
+ }
+
+ ret = bq24261_get_model(client, &model);
+ if (ret < 0) {
+ dev_err(&client->dev, "chip detection error (%d)\n", ret);
+ return -ENODEV;
+ }
+
+ chip = devm_kzalloc(&client->dev, sizeof(*chip), GFP_KERNEL);
+ if (!chip)
+ return -ENOMEM;
+
+ chip->client = client;
+ if (client->dev.platform_data)
+ chip->pdata = client->dev.platform_data;
+ else if (id->driver_data)
+ chip->pdata = (struct bq24261_platform_data *)id->driver_data;
+ else
+ bq24261_of_pdata(chip);
+
+ if (!chip->pdata) {
+ dev_err(&client->dev, "platform data not found");
+ return -ENODEV;
+ }
+
+ i2c_set_clientdata(client, chip);
+ mutex_init(&chip->lock);
+ chip->model = model;
+
+ /* Initialize charger parameters */
+ chip->cc = chip->pdata->def_cc;
+ chip->cv = chip->pdata->def_cv;
+ chip->iterm = chip->pdata->iterm;
+ chip->chg_status = BQ24261_CHRGR_STAT_UNKNOWN;
+ chip->chg_health = POWER_SUPPLY_HEALTH_UNKNOWN;
+
+ charger_cfg.drv_data = chip;
+ charger_cfg.supplied_to = bq24261_charger_supplied_to;
+ charger_cfg.num_supplicants = ARRAY_SIZE(bq24261_charger_supplied_to);
+ if (!dis_sysfs_write) {
+ bq24261_charger_desc.set_property = bq24261_usb_set_property;
+ bq24261_charger_desc.property_is_writeable =
+ bq24261_property_is_writeable;
+ }
+ chip->psy_usb = power_supply_register(&client->dev,
+ &bq24261_charger_desc, &charger_cfg);
+ if (IS_ERR(chip->psy_usb)) {
+ dev_err(&client->dev, "power supply registration failed(%d)\n",
+ IS_ERR(chip->psy_usb));
+ return IS_ERR(chip->psy_usb);
+ }
+
+ INIT_DELAYED_WORK(&chip->wdt_work, bq24261_wdt_reset_worker);
+ INIT_DELAYED_WORK(&chip->fault_mon_work, bq24261_fault_mon_work);
+
+ ret = bq24261_extcon_register(chip);
+ if (ret < 0)
+ goto extcon_reg_failed;
+
+ if (chip->client->irq) {
+ ret = devm_request_threaded_irq(&client->dev, chip->client->irq,
+ NULL, bq24261_thread_handler,
+ IRQF_SHARED | IRQF_NO_SUSPEND,
+ DEV_NAME, chip);
+ if (ret) {
+ dev_err(&client->dev,
+ "irq request failed (%d)\n", ret);
+ goto irq_reg_failed;
+ }
+ INIT_WORK(&chip->irq_work, bq24261_irq_worker);
+ }
+
+ /* Check for charger connected boot case */
+ schedule_work(&chip->cable.work);
+
+ return 0;
+
+irq_reg_failed:
+ extcon_unregister_interest(&chip->cable.sdp);
+ extcon_unregister_interest(&chip->cable.cdp);
+ extcon_unregister_interest(&chip->cable.dcp);
+ extcon_unregister_interest(&chip->cable.otg);
+extcon_reg_failed:
+ power_supply_unregister(chip->psy_usb);
+ return ret;
+}
+
+static int bq24261_remove(struct i2c_client *client)
+{
+ struct bq24261_charger *chip = i2c_get_clientdata(client);
+
+ flush_scheduled_work();
+ extcon_unregister_interest(&chip->cable.sdp);
+ extcon_unregister_interest(&chip->cable.cdp);
+ extcon_unregister_interest(&chip->cable.dcp);
+ extcon_unregister_interest(&chip->cable.otg);
+ power_supply_unregister(chip->psy_usb);
+ return 0;
+}
+
+static const struct i2c_device_id bq24261_id[] = {
+ {"bq24261", 0},
+ { },
+};
+MODULE_DEVICE_TABLE(i2c, bq24261_id);
+
+static const struct acpi_device_id bq24261_acpi_match[] = {
+ {"TBQ24261", 0},
+ {},
+};
+MODULE_DEVICE_TABLE(acpi, bq24261_acpi_match);
+
+static const struct of_device_id bq24261_of_match[] = {
+ { .compatible = "ti,bq24261", },
+ { },
+};
+MODULE_DEVICE_TABLE(of, bq24261_of_match);
+
+static struct i2c_driver bq24261_driver = {
+ .driver = {
+ .name = DEV_NAME,
+ .acpi_match_table = ACPI_PTR(bq24261_acpi_match),
+ .of_match_table = of_match_ptr(bq24261_of_match),
+ },
+ .probe = bq24261_probe,
+ .remove = bq24261_remove,
+ .id_table = bq24261_id,
+};
+
+module_i2c_driver(bq24261_driver);
+
+MODULE_AUTHOR("Jenny TC <jenny.tc@xxxxxxxxx>");
+MODULE_AUTHOR("Ramakrishna Pallala <ramakrishna.pallala@xxxxxxxxx>");
+MODULE_DESCRIPTION("BQ24261 Charger Driver");
+MODULE_LICENSE("GPL v2");
diff --git a/include/linux/power/bq24261_charger.h b/include/linux/power/bq24261_charger.h
new file mode 100644
index 0000000..6c7d96e
--- /dev/null
+++ b/include/linux/power/bq24261_charger.h
@@ -0,0 +1,26 @@
+/*
+ * bq24261_charger.h: platform data structure for bq24261 driver
+ *
+ * Copyright (C) 2014 Intel 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; version 2
+ * of the License.
+ */
+
+#ifndef __BQ24261_CHARGER_H__
+#define __BQ24261_CHARGER_H__
+
+struct bq24261_platform_data {
+ int def_cc; /* in mA */
+ int def_cv; /* in mV */
+ int iterm; /* in mA */
+ int max_cc; /* in mA */
+ int max_cv; /* in mV */
+ int min_temp; /* in DegC */
+ int max_temp; /* in DegC */
+ int thermal_sensing;
+};
+
+#endif
--
1.7.9.5
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