ab8500-fg: Add power cut feature for ab8505 and ab8540

Add support for a power cut feature which allows user to
configure when ab8505 and ab8540 based platforms should shut
down system due to low battery.

Signed-off-by: Lee Jones <lee.jones@linaro.org>

5 files changed, 543 insertions, 0 deletions

diff --git a/drivers/mfd/ab8500-core.c b/drivers/mfd/ab8500-core.c
index c7ff55753a8f..f276352cc9ef 100644
--- a/drivers/mfd/ab8500-core.c
+++ b/drivers/mfd/ab8500-core.c
@@ -113,6 +113,7 @@
 #define AB8500_SWITCH_OFF_STATUS        0x00
 
 #define AB8500_TURN_ON_STATUS           0x00
+#define AB8505_TURN_ON_STATUS_2 0x04
 
 #define AB8500_CH_USBCH_STAT1_REG       0x02
 #define VBUS_DET_DBNC100                0x02
@@ -1401,6 +1402,21 @@ static ssize_t show_turn_on_status(struct device *dev,
         return sprintf(buf, "%#x\n", value);
 }
 
+static ssize_t show_turn_on_status_2(struct device *dev,
+                                struct device_attribute *attr, char *buf)
+{
+        int ret;
+        u8 value;
+        struct ab8500 *ab8500;
+
+        ab8500 = dev_get_drvdata(dev);
+        ret = get_register_interruptible(ab8500, AB8500_SYS_CTRL1_BLOCK,
+                AB8505_TURN_ON_STATUS_2, &value);
+        if (ret < 0)
+                return ret;
+        return sprintf(buf, "%#x\n", (value & 0x1));
+}
+
 static ssize_t show_ab9540_dbbrstn(struct device *dev,
                                 struct device_attribute *attr, char *buf)
 {
@@ -1457,6 +1473,7 @@ exit:
 static DEVICE_ATTR(chip_id, S_IRUGO, show_chip_id, NULL);
 static DEVICE_ATTR(switch_off_status, S_IRUGO, show_switch_off_status, NULL);
 static DEVICE_ATTR(turn_on_status, S_IRUGO, show_turn_on_status, NULL);
+static DEVICE_ATTR(turn_on_status_2, S_IRUGO, show_turn_on_status_2, NULL);
 static DEVICE_ATTR(dbbrstn, S_IRUGO | S_IWUSR,
                         show_ab9540_dbbrstn, store_ab9540_dbbrstn);
 
@@ -1467,6 +1484,11 @@ static struct attribute *ab8500_sysfs_entries[] = {
         NULL,
 };
 
+static struct attribute *ab8505_sysfs_entries[] = {
+        &dev_attr_turn_on_status_2.attr,
+        NULL,
+};
+
 static struct attribute *ab9540_sysfs_entries[] = {
         &dev_attr_chip_id.attr,
         &dev_attr_switch_off_status.attr,
@@ -1479,6 +1501,10 @@ static struct attribute_group ab8500_attr_group = {
         .attrs  = ab8500_sysfs_entries,
 };
 
+static struct attribute_group ab8505_attr_group = {
+        .attrs  = ab8505_sysfs_entries,
+};
+
 static struct attribute_group ab9540_attr_group = {
         .attrs  = ab9540_sysfs_entries,
 };
@@ -1719,6 +1745,12 @@ static int ab8500_probe(struct platform_device *pdev)
         else
                 ret = sysfs_create_group(&ab8500->dev->kobj,
                                         &ab8500_attr_group);
+
+        if ((is_ab8505(ab8500) || is_ab9540(ab8500)) &&
+                        ab8500->chip_id >= AB8500_CUT2P0)
+                ret = sysfs_create_group(&ab8500->dev->kobj,
+                                         &ab8505_attr_group);
+
         if (ret)
                 dev_err(ab8500->dev, "error creating sysfs entries\n");
 
@@ -1735,6 +1767,10 @@ static int ab8500_remove(struct platform_device *pdev)
         else
                 sysfs_remove_group(&ab8500->dev->kobj, &ab8500_attr_group);
 
+        if ((is_ab8505(ab8500) || is_ab9540(ab8500)) &&
+                        ab8500->chip_id >= AB8500_CUT2P0)
+                sysfs_remove_group(&ab8500->dev->kobj, &ab8505_attr_group);
+
         mfd_remove_devices(ab8500->dev);
 
         return 0;
diff --git a/drivers/power/ab8500_bmdata.c b/drivers/power/ab8500_bmdata.c
index 7a96c0650fbb..e8759763fbe0 100644
--- a/drivers/power/ab8500_bmdata.c
+++ b/drivers/power/ab8500_bmdata.c
@@ -407,6 +407,11 @@ static const struct abx500_fg_parameters fg = {
         .battok_raising_th_sel1 = 2860,
         .maint_thres = 95,
         .user_cap_limit = 15,
+        .pcut_enable = 1,
+        .pcut_max_time = 127,
+        .pcut_flag_time = 112,
+        .pcut_max_restart = 15,
+        .pcut_debounce_time = 2,
 };
 
 static const struct abx500_maxim_parameters maxi_params = {
diff --git a/drivers/power/ab8500_fg.c b/drivers/power/ab8500_fg.c
index 25dae4c4b0ef..92f342bcf188 100644
--- a/drivers/power/ab8500_fg.c
+++ b/drivers/power/ab8500_fg.c
@@ -2344,6 +2344,50 @@ static int ab8500_fg_init_hw_registers(struct ab8500_fg *di)
                 dev_err(di->dev, "BattOk init write failed.\n");
                 goto out;
         }
+
+        if (((is_ab8505(di->parent) || is_ab9540(di->parent)) &&
+                        abx500_get_chip_id(di->dev) >= AB8500_CUT2P0)
+                        || is_ab8540(di->parent)) {
+                ret = abx500_set_register_interruptible(di->dev, AB8500_RTC,
+                        AB8505_RTC_PCUT_MAX_TIME_REG, di->bm->fg_params->pcut_max_time);
+
+                if (ret) {
+                        dev_err(di->dev, "%s write failed AB8505_RTC_PCUT_MAX_TIME_REG\n", __func__);
+                        goto out;
+                };
+
+                ret = abx500_set_register_interruptible(di->dev, AB8500_RTC,
+                        AB8505_RTC_PCUT_FLAG_TIME_REG, di->bm->fg_params->pcut_flag_time);
+
+                if (ret) {
+                        dev_err(di->dev, "%s write failed AB8505_RTC_PCUT_FLAG_TIME_REG\n", __func__);
+                        goto out;
+                };
+
+                ret = abx500_set_register_interruptible(di->dev, AB8500_RTC,
+                        AB8505_RTC_PCUT_RESTART_REG, di->bm->fg_params->pcut_max_restart);
+
+                if (ret) {
+                        dev_err(di->dev, "%s write failed AB8505_RTC_PCUT_RESTART_REG\n", __func__);
+                        goto out;
+                };
+
+                ret = abx500_set_register_interruptible(di->dev, AB8500_RTC,
+                        AB8505_RTC_PCUT_DEBOUNCE_REG, di->bm->fg_params->pcut_debounce_time);
+
+                if (ret) {
+                        dev_err(di->dev, "%s write failed AB8505_RTC_PCUT_DEBOUNCE_REG\n", __func__);
+                        goto out;
+                };
+
+                ret = abx500_set_register_interruptible(di->dev, AB8500_RTC,
+                        AB8505_RTC_PCUT_CTL_STATUS_REG, di->bm->fg_params->pcut_enable);
+
+                if (ret) {
+                        dev_err(di->dev, "%s write failed AB8505_RTC_PCUT_CTL_STATUS_REG\n", __func__);
+                        goto out;
+                };
+        }
 out:
         return ret;
 }
@@ -2546,6 +2590,428 @@ static int ab8500_fg_sysfs_init(struct ab8500_fg *di)
 
         return ret;
 }
+
+static ssize_t ab8505_powercut_flagtime_read(struct device *dev,
+                             struct device_attribute *attr,
+                             char *buf)
+{
+        int ret;
+        u8 reg_value;
+        struct power_supply *psy = dev_get_drvdata(dev);
+        struct ab8500_fg *di;
+
+        di = to_ab8500_fg_device_info(psy);
+
+        ret = abx500_get_register_interruptible(di->dev, AB8500_RTC,
+                AB8505_RTC_PCUT_FLAG_TIME_REG, &reg_value);
+
+        if (ret < 0) {
+                dev_err(dev, "Failed to read AB8505_RTC_PCUT_FLAG_TIME_REG\n");
+                goto fail;
+        }
+
+        return scnprintf(buf, PAGE_SIZE, "%d\n", (reg_value & 0x7F));
+
+fail:
+        return ret;
+}
+
+static ssize_t ab8505_powercut_flagtime_write(struct device *dev,
+                                  struct device_attribute *attr,
+                                  const char *buf, size_t count)
+{
+        int ret;
+        long unsigned reg_value;
+        struct power_supply *psy = dev_get_drvdata(dev);
+        struct ab8500_fg *di;
+
+        di = to_ab8500_fg_device_info(psy);
+
+        reg_value = simple_strtoul(buf, NULL, 10);
+
+        if (reg_value > 0x7F) {
+                dev_err(dev, "Incorrect parameter, echo 0 (1.98s) - 127 (15.625ms) for flagtime\n");
+                goto fail;
+        }
+
+        ret = abx500_set_register_interruptible(di->dev, AB8500_RTC,
+                AB8505_RTC_PCUT_FLAG_TIME_REG, (u8)reg_value);
+
+        if (ret < 0)
+                dev_err(dev, "Failed to set AB8505_RTC_PCUT_FLAG_TIME_REG\n");
+
+fail:
+        return count;
+}
+
+static ssize_t ab8505_powercut_maxtime_read(struct device *dev,
+                             struct device_attribute *attr,
+                             char *buf)
+{
+        int ret;
+        u8 reg_value;
+        struct power_supply *psy = dev_get_drvdata(dev);
+        struct ab8500_fg *di;
+
+        di = to_ab8500_fg_device_info(psy);
+
+        ret = abx500_get_register_interruptible(di->dev, AB8500_RTC,
+                AB8505_RTC_PCUT_MAX_TIME_REG, &reg_value);
+
+        if (ret < 0) {
+                dev_err(dev, "Failed to read AB8505_RTC_PCUT_MAX_TIME_REG\n");
+                goto fail;
+        }
+
+        return scnprintf(buf, PAGE_SIZE, "%d\n", (reg_value & 0x7F));
+
+fail:
+        return ret;
+
+}
+
+static ssize_t ab8505_powercut_maxtime_write(struct device *dev,
+                                  struct device_attribute *attr,
+                                  const char *buf, size_t count)
+{
+        int ret;
+        int reg_value;
+        struct power_supply *psy = dev_get_drvdata(dev);
+        struct ab8500_fg *di;
+
+        di = to_ab8500_fg_device_info(psy);
+
+        reg_value = simple_strtoul(buf, NULL, 10);
+        if (reg_value > 0x7F) {
+                dev_err(dev, "Incorrect parameter, echo 0 (0.0s) - 127 (1.98s) for maxtime\n");
+                goto fail;
+        }
+
+        ret = abx500_set_register_interruptible(di->dev, AB8500_RTC,
+                AB8505_RTC_PCUT_MAX_TIME_REG, (u8)reg_value);
+
+        if (ret < 0)
+                dev_err(dev, "Failed to set AB8505_RTC_PCUT_MAX_TIME_REG\n");
+
+fail:
+        return count;
+}
+
+static ssize_t ab8505_powercut_restart_read(struct device *dev,
+                             struct device_attribute *attr,
+                             char *buf)
+{
+        int ret;
+        u8 reg_value;
+        struct power_supply *psy = dev_get_drvdata(dev);
+        struct ab8500_fg *di;
+
+        di = to_ab8500_fg_device_info(psy);
+
+        ret = abx500_get_register_interruptible(di->dev, AB8500_RTC,
+                AB8505_RTC_PCUT_RESTART_REG, &reg_value);
+
+        if (ret < 0) {
+                dev_err(dev, "Failed to read AB8505_RTC_PCUT_RESTART_REG\n");
+                goto fail;
+        }
+
+        return scnprintf(buf, PAGE_SIZE, "%d\n", (reg_value & 0xF));
+
+fail:
+        return ret;
+}
+
+static ssize_t ab8505_powercut_restart_write(struct device *dev,
+                                             struct device_attribute *attr,
+                                             const char *buf, size_t count)
+{
+        int ret;
+        int reg_value;
+        struct power_supply *psy = dev_get_drvdata(dev);
+        struct ab8500_fg *di;
+
+        di = to_ab8500_fg_device_info(psy);
+
+        reg_value = simple_strtoul(buf, NULL, 10);
+        if (reg_value > 0xF) {
+                dev_err(dev, "Incorrect parameter, echo 0 - 15 for number of restart\n");
+                goto fail;
+        }
+
+        ret = abx500_set_register_interruptible(di->dev, AB8500_RTC,
+                                                AB8505_RTC_PCUT_RESTART_REG, (u8)reg_value);
+
+        if (ret < 0)
+                dev_err(dev, "Failed to set AB8505_RTC_PCUT_RESTART_REG\n");
+
+fail:
+        return count;
+
+}
+
+static ssize_t ab8505_powercut_timer_read(struct device *dev,
+                                          struct device_attribute *attr,
+                                          char *buf)
+{
+        int ret;
+        u8 reg_value;
+        struct power_supply *psy = dev_get_drvdata(dev);
+        struct ab8500_fg *di;
+
+        di = to_ab8500_fg_device_info(psy);
+
+        ret = abx500_get_register_interruptible(di->dev, AB8500_RTC,
+                                                AB8505_RTC_PCUT_TIME_REG, &reg_value);
+
+        if (ret < 0) {
+                dev_err(dev, "Failed to read AB8505_RTC_PCUT_TIME_REG\n");
+                goto fail;
+        }
+
+        return scnprintf(buf, PAGE_SIZE, "%d\n", (reg_value & 0x7F));
+
+fail:
+        return ret;
+}
+
+static ssize_t ab8505_powercut_restart_counter_read(struct device *dev,
+                                                    struct device_attribute *attr,
+                                                    char *buf)
+{
+        int ret;
+        u8 reg_value;
+        struct power_supply *psy = dev_get_drvdata(dev);
+        struct ab8500_fg *di;
+
+        di = to_ab8500_fg_device_info(psy);
+
+        ret = abx500_get_register_interruptible(di->dev, AB8500_RTC,
+                                                AB8505_RTC_PCUT_RESTART_REG, &reg_value);
+
+        if (ret < 0) {
+                dev_err(dev, "Failed to read AB8505_RTC_PCUT_RESTART_REG\n");
+                goto fail;
+        }
+
+        return scnprintf(buf, PAGE_SIZE, "%d\n", (reg_value & 0xF0) >> 4);
+
+fail:
+        return ret;
+}
+
+static ssize_t ab8505_powercut_read(struct device *dev,
+                                    struct device_attribute *attr,
+                                    char *buf)
+{
+        int ret;
+        u8 reg_value;
+        struct power_supply *psy = dev_get_drvdata(dev);
+        struct ab8500_fg *di;
+
+        di = to_ab8500_fg_device_info(psy);
+
+        ret = abx500_get_register_interruptible(di->dev, AB8500_RTC,
+                                                AB8505_RTC_PCUT_CTL_STATUS_REG, &reg_value);
+
+        if (ret < 0)
+                goto fail;
+
+        return scnprintf(buf, PAGE_SIZE, "%d\n", (reg_value & 0x1));
+
+fail:
+        return ret;
+}
+
+static ssize_t ab8505_powercut_write(struct device *dev,
+                                     struct device_attribute *attr,
+                                     const char *buf, size_t count)
+{
+        int ret;
+        int reg_value;
+        struct power_supply *psy = dev_get_drvdata(dev);
+        struct ab8500_fg *di;
+
+        di = to_ab8500_fg_device_info(psy);
+
+        reg_value = simple_strtoul(buf, NULL, 10);
+        if (reg_value > 0x1) {
+                dev_err(dev, "Incorrect parameter, echo 0/1 to disable/enable Pcut feature\n");
+                goto fail;
+        }
+
+        ret = abx500_set_register_interruptible(di->dev, AB8500_RTC,
+                                                AB8505_RTC_PCUT_CTL_STATUS_REG, (u8)reg_value);
+
+        if (ret < 0)
+                dev_err(dev, "Failed to set AB8505_RTC_PCUT_CTL_STATUS_REG\n");
+
+fail:
+        return count;
+}
+
+static ssize_t ab8505_powercut_flag_read(struct device *dev,
+                                         struct device_attribute *attr,
+                                         char *buf)
+{
+
+        int ret;
+        u8 reg_value;
+        struct power_supply *psy = dev_get_drvdata(dev);
+        struct ab8500_fg *di;
+
+        di = to_ab8500_fg_device_info(psy);
+
+        ret = abx500_get_register_interruptible(di->dev, AB8500_RTC,
+                                                AB8505_RTC_PCUT_CTL_STATUS_REG,  &reg_value);
+
+        if (ret < 0) {
+                dev_err(dev, "Failed to read AB8505_RTC_PCUT_CTL_STATUS_REG\n");
+                goto fail;
+        }
+
+        return scnprintf(buf, PAGE_SIZE, "%d\n", ((reg_value & 0x10) >> 4));
+
+fail:
+        return ret;
+}
+
+static ssize_t ab8505_powercut_debounce_read(struct device *dev,
+                                             struct device_attribute *attr,
+                                             char *buf)
+{
+        int ret;
+        u8 reg_value;
+        struct power_supply *psy = dev_get_drvdata(dev);
+        struct ab8500_fg *di;
+
+        di = to_ab8500_fg_device_info(psy);
+
+        ret = abx500_get_register_interruptible(di->dev, AB8500_RTC,
+                                                AB8505_RTC_PCUT_DEBOUNCE_REG,  &reg_value);
+
+        if (ret < 0) {
+                dev_err(dev, "Failed to read AB8505_RTC_PCUT_DEBOUNCE_REG\n");
+                goto fail;
+        }
+
+        return scnprintf(buf, PAGE_SIZE, "%d\n", (reg_value & 0x7));
+
+fail:
+        return ret;
+}
+
+static ssize_t ab8505_powercut_debounce_write(struct device *dev,
+                                              struct device_attribute *attr,
+                                              const char *buf, size_t count)
+{
+        int ret;
+        int reg_value;
+        struct power_supply *psy = dev_get_drvdata(dev);
+        struct ab8500_fg *di;
+
+        di = to_ab8500_fg_device_info(psy);
+
+        reg_value = simple_strtoul(buf, NULL, 10);
+        if (reg_value > 0x7) {
+                dev_err(dev, "Incorrect parameter, echo 0 to 7 for debounce setting\n");
+                goto fail;
+        }
+
+        ret = abx500_set_register_interruptible(di->dev, AB8500_RTC,
+                                                AB8505_RTC_PCUT_DEBOUNCE_REG, (u8)reg_value);
+
+        if (ret < 0)
+                dev_err(dev, "Failed to set AB8505_RTC_PCUT_DEBOUNCE_REG\n");
+
+fail:
+        return count;
+}
+
+static ssize_t ab8505_powercut_enable_status_read(struct device *dev,
+                                                  struct device_attribute *attr,
+                                                  char *buf)
+{
+        int ret;
+        u8 reg_value;
+        struct power_supply *psy = dev_get_drvdata(dev);
+        struct ab8500_fg *di;
+
+        di = to_ab8500_fg_device_info(psy);
+
+        ret = abx500_get_register_interruptible(di->dev, AB8500_RTC,
+                                                AB8505_RTC_PCUT_CTL_STATUS_REG, &reg_value);
+
+        if (ret < 0) {
+                dev_err(dev, "Failed to read AB8505_RTC_PCUT_CTL_STATUS_REG\n");
+                goto fail;
+        }
+
+        return scnprintf(buf, PAGE_SIZE, "%d\n", ((reg_value & 0x20) >> 5));
+
+fail:
+        return ret;
+}
+
+static struct device_attribute ab8505_fg_sysfs_psy_attrs[] = {
+        __ATTR(powercut_flagtime, (S_IRUGO | S_IWUSR | S_IWGRP),
+                ab8505_powercut_flagtime_read, ab8505_powercut_flagtime_write),
+        __ATTR(powercut_maxtime, (S_IRUGO | S_IWUSR | S_IWGRP),
+                ab8505_powercut_maxtime_read, ab8505_powercut_maxtime_write),
+        __ATTR(powercut_restart_max, (S_IRUGO | S_IWUSR | S_IWGRP),
+                ab8505_powercut_restart_read, ab8505_powercut_restart_write),
+        __ATTR(powercut_timer, S_IRUGO, ab8505_powercut_timer_read, NULL),
+        __ATTR(powercut_restart_counter, S_IRUGO,
+                ab8505_powercut_restart_counter_read, NULL),
+        __ATTR(powercut_enable, (S_IRUGO | S_IWUSR | S_IWGRP),
+                ab8505_powercut_read, ab8505_powercut_write),
+        __ATTR(powercut_flag, S_IRUGO, ab8505_powercut_flag_read, NULL),
+        __ATTR(powercut_debounce_time, (S_IRUGO | S_IWUSR | S_IWGRP),
+                ab8505_powercut_debounce_read, ab8505_powercut_debounce_write),
+        __ATTR(powercut_enable_status, S_IRUGO,
+                ab8505_powercut_enable_status_read, NULL),
+};
+
+static int ab8500_fg_sysfs_psy_create_attrs(struct device *dev)
+{
+        unsigned int i, j;
+        struct power_supply *psy = dev_get_drvdata(dev);
+        struct ab8500_fg *di;
+
+        di = to_ab8500_fg_device_info(psy);
+
+        if (((is_ab8505(di->parent) || is_ab9540(di->parent)) &&
+             abx500_get_chip_id(dev->parent) >= AB8500_CUT2P0)
+            || is_ab8540(di->parent)) {
+                for (j = 0; j < ARRAY_SIZE(ab8505_fg_sysfs_psy_attrs); j++)
+                        if (device_create_file(dev, &ab8505_fg_sysfs_psy_attrs[j]))
+                                goto sysfs_psy_create_attrs_failed_ab8505;
+        }
+        return 0;
+sysfs_psy_create_attrs_failed_ab8505:
+        dev_err(dev, "Failed creating sysfs psy attrs for ab8505.\n");
+        while (j--)
+                device_remove_file(dev, &ab8505_fg_sysfs_psy_attrs[i]);
+
+        return -EIO;
+}
+
+static void ab8500_fg_sysfs_psy_remove_attrs(struct device *dev)
+{
+        unsigned int i;
+        struct power_supply *psy = dev_get_drvdata(dev);
+        struct ab8500_fg *di;
+
+        di = to_ab8500_fg_device_info(psy);
+
+        if (((is_ab8505(di->parent) || is_ab9540(di->parent)) &&
+             abx500_get_chip_id(dev->parent) >= AB8500_CUT2P0)
+            || is_ab8540(di->parent)) {
+                for (i = 0; i < ARRAY_SIZE(ab8505_fg_sysfs_psy_attrs); i++)
+                        (void)device_remove_file(dev, &ab8505_fg_sysfs_psy_attrs[i]);
+        }
+}
+
 /* Exposure to the sysfs interface <<END>> */
 
 #if defined(CONFIG_PM)
@@ -2607,6 +3073,7 @@ static int ab8500_fg_remove(struct platform_device *pdev)
         ab8500_fg_sysfs_exit(di);
 
         flush_scheduled_work();
+        ab8500_fg_sysfs_psy_remove_attrs(di->fg_psy.dev);
         power_supply_unregister(&di->fg_psy);
         platform_set_drvdata(pdev, NULL);
         return ret;
@@ -2772,6 +3239,13 @@ static int ab8500_fg_probe(struct platform_device *pdev)
                 goto free_irq;
         }
 
+        ret = ab8500_fg_sysfs_psy_create_attrs(di->fg_psy.dev);
+        if (ret) {
+                dev_err(di->dev, "failed to create FG psy\n");
+                ab8500_fg_sysfs_exit(di);
+                goto free_irq;
+        }
+
         /* Calibrate the fg first time */
         di->flags.calibrate = true;
         di->calib_state = AB8500_FG_CALIB_INIT;
diff --git a/include/linux/mfd/abx500.h b/include/linux/mfd/abx500.h
index 9ead60bc66b7..188aedc322c2 100644
--- a/include/linux/mfd/abx500.h
+++ b/include/linux/mfd/abx500.h
@@ -89,6 +89,11 @@ struct abx500_fg;
  *                              points.
  * @maint_thres                 This is the threshold where we stop reporting
  *                              battery full while in maintenance, in per cent
+ * @pcut_enable:                        Enable power cut feature in ab8505
+ * @pcut_max_time:              Max time threshold
+ * @pcut_flag_time:             Flagtime threshold
+ * @pcut_max_restart:           Max number of restarts
+ * @pcut_debounce_time:         Sets battery debounce time
  */
 struct abx500_fg_parameters {
         int recovery_sleep_timer;
@@ -106,6 +111,11 @@ struct abx500_fg_parameters {
         int battok_raising_th_sel1;
         int user_cap_limit;
         int maint_thres;
+        bool pcut_enable;
+        u8 pcut_max_time;
+        u8 pcut_flag_time;
+        u8 pcut_max_restart;
+        u8 pcut_debounce_time;
 };
 
 /**
diff --git a/include/linux/mfd/abx500/ab8500-bm.h b/include/linux/mfd/abx500/ab8500-bm.h
index 8d35bfe164c8..0efbe0efee7f 100644
--- a/include/linux/mfd/abx500/ab8500-bm.h
+++ b/include/linux/mfd/abx500/ab8500-bm.h
@@ -235,6 +235,14 @@
 /* Battery type */
 #define BATTERY_UNKNOWN                 00
 
+/* Registers for pcut feature in ab8505 and ab9540 */
+#define AB8505_RTC_PCUT_CTL_STATUS_REG  0x12
+#define AB8505_RTC_PCUT_TIME_REG        0x13
+#define AB8505_RTC_PCUT_MAX_TIME_REG    0x14
+#define AB8505_RTC_PCUT_FLAG_TIME_REG   0x15
+#define AB8505_RTC_PCUT_RESTART_REG     0x16
+#define AB8505_RTC_PCUT_DEBOUNCE_REG    0x17
+
 /**
  * struct res_to_temp - defines one point in a temp to res curve. To
  * be used in battery packs that combines the identification resistor with a
@@ -283,6 +291,11 @@ struct ab8500_fg;
  *                              points.
  * @maint_thres                 This is the threshold where we stop reporting
  *                              battery full while in maintenance, in per cent
+ * @pcut_enable:                        Enable power cut feature in ab8505
+ * @pcut_max_time:              Max time threshold
+ * @pcut_flag_time:             Flagtime threshold
+ * @pcut_max_restart:           Max number of restarts
+ * @pcut_debunce_time:  Sets battery debounce time
  */
 struct ab8500_fg_parameters {
         int recovery_sleep_timer;
@@ -299,6 +312,11 @@ struct ab8500_fg_parameters {
         int battok_raising_th_sel1;
         int user_cap_limit;
         int maint_thres;
+        bool pcut_enable;
+        u8 pcut_max_time;
+        u8 pcut_flag_time;
+        u8 pcut_max_restart;
+        u8 pcut_debunce_time;
 };
 
 /**